2007-01-25 21:44:48 +01:00
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This document summarizes new features and bugfixes in each stable release
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of Tor. If you want to see more detailed descriptions of the changes in
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each development snapshot, see the ChangeLog file.
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2012-05-24 10:12:29 +02:00
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Changes in version 0.2.2.36 - 2012-05-24
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Tor 0.2.2.36 updates the addresses for two of the eight directory
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authorities, fixes some potential anonymity and security issues,
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and fixes several crash bugs.
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Tor 0.2.1.x has reached its end-of-life. Those Tor versions have many
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known flaws, and nobody should be using them. You should upgrade. If
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you're using a Linux or BSD and its packages are obsolete, stop using
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those packages and upgrade anyway.
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o Directory authority changes:
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- Change IP address for maatuska (v3 directory authority).
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- Change IP address for ides (v3 directory authority), and rename
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it to turtles.
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o Security fixes:
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- When building or running with any version of OpenSSL earlier
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than 0.9.8s or 1.0.0f, disable SSLv3 support. These OpenSSL
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versions have a bug (CVE-2011-4576) in which their block cipher
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padding includes uninitialized data, potentially leaking sensitive
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information to any peer with whom they make a SSLv3 connection. Tor
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does not use SSL v3 by default, but a hostile client or server
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could force an SSLv3 connection in order to gain information that
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they shouldn't have been able to get. The best solution here is to
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upgrade to OpenSSL 0.9.8s or 1.0.0f (or later). But when building
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or running with a non-upgraded OpenSSL, we disable SSLv3 entirely
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to make sure that the bug can't happen.
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- Never use a bridge or a controller-supplied node as an exit, even
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if its exit policy allows it. Found by wanoskarnet. Fixes bug
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5342. Bugfix on 0.1.1.15-rc (for controller-purpose descriptors)
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and 0.2.0.3-alpha (for bridge-purpose descriptors).
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- Only build circuits if we have a sufficient threshold of the total
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descriptors that are marked in the consensus with the "Exit"
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flag. This mitigates an attack proposed by wanoskarnet, in which
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all of a client's bridges collude to restrict the exit nodes that
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the client knows about. Fixes bug 5343.
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- Provide controllers with a safer way to implement the cookie
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authentication mechanism. With the old method, if another locally
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running program could convince a controller that it was the Tor
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2012-06-06 06:30:25 +02:00
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process, then that program could trick the controller into telling
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2012-05-24 10:12:29 +02:00
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it the contents of an arbitrary 32-byte file. The new "SAFECOOKIE"
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authentication method uses a challenge-response approach to prevent
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this attack. Fixes bug 5185; implements proposal 193.
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o Major bugfixes:
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- Avoid logging uninitialized data when unable to decode a hidden
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service descriptor cookie. Fixes bug 5647; bugfix on 0.2.1.5-alpha.
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- Avoid a client-side assertion failure when receiving an INTRODUCE2
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cell on a general purpose circuit. Fixes bug 5644; bugfix on
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0.2.1.6-alpha.
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- Fix builds when the path to sed, openssl, or sha1sum contains
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spaces, which is pretty common on Windows. Fixes bug 5065; bugfix
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on 0.2.2.1-alpha.
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- Correct our replacements for the timeradd() and timersub() functions
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on platforms that lack them (for example, Windows). The timersub()
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function is used when expiring circuits, while timeradd() is
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currently unused. Bug report and patch by Vektor. Fixes bug 4778;
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bugfix on 0.2.2.24-alpha.
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- Fix the SOCKET_OK test that we use to tell when socket
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creation fails so that it works on Win64. Fixes part of bug 4533;
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bugfix on 0.2.2.29-beta. Bug found by wanoskarnet.
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o Minor bugfixes:
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- Reject out-of-range times like 23:59:61 in parse_rfc1123_time().
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Fixes bug 5346; bugfix on 0.0.8pre3.
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- Make our number-parsing functions always treat too-large values
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as an error, even when those values exceed the width of the
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underlying type. Previously, if the caller provided these
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functions with minima or maxima set to the extreme values of the
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underlying integer type, these functions would return those
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values on overflow rather than treating overflow as an error.
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Fixes part of bug 5786; bugfix on 0.0.9.
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- Older Linux kernels erroneously respond to strange nmap behavior
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by having accept() return successfully with a zero-length
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socket. When this happens, just close the connection. Previously,
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we would try harder to learn the remote address: but there was
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no such remote address to learn, and our method for trying to
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learn it was incorrect. Fixes bugs 1240, 4745, and 4747. Bugfix
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on 0.1.0.3-rc. Reported and diagnosed by "r1eo".
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- Correct parsing of certain date types in parse_http_time().
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Without this patch, If-Modified-Since would behave
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incorrectly. Fixes bug 5346; bugfix on 0.2.0.2-alpha. Patch from
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Esteban Manchado Velázques.
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- Change the BridgePassword feature (part of the "bridge community"
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design, which is not yet implemented) to use a time-independent
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comparison. The old behavior might have allowed an adversary
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to use timing to guess the BridgePassword value. Fixes bug 5543;
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bugfix on 0.2.0.14-alpha.
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- Detect and reject certain misformed escape sequences in
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configuration values. Previously, these values would cause us
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to crash if received in a torrc file or over an authenticated
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control port. Bug found by Esteban Manchado Velázquez, and
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independently by Robert Connolly from Matta Consulting who further
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noted that it allows a post-authentication heap overflow. Patch
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by Alexander Schrijver. Fixes bugs 5090 and 5402 (CVE 2012-1668);
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bugfix on 0.2.0.16-alpha.
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- Fix a compile warning when using the --enable-openbsd-malloc
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configure option. Fixes bug 5340; bugfix on 0.2.0.20-rc.
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- During configure, detect when we're building with clang version
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3.0 or lower and disable the -Wnormalized=id and -Woverride-init
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CFLAGS. clang doesn't support them yet.
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- When sending an HTTP/1.1 proxy request, include a Host header.
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Fixes bug 5593; bugfix on 0.2.2.1-alpha.
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- Fix a NULL-pointer dereference on a badly formed SETCIRCUITPURPOSE
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command. Found by mikeyc. Fixes bug 5796; bugfix on 0.2.2.9-alpha.
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- If we hit the error case where routerlist_insert() replaces an
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existing (old) server descriptor, make sure to remove that
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server descriptor from the old_routers list. Fix related to bug
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1776. Bugfix on 0.2.2.18-alpha.
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o Minor bugfixes (documentation and log messages):
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- Fix a typo in a log message in rend_service_rendezvous_has_opened().
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Fixes bug 4856; bugfix on Tor 0.0.6.
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- Update "ClientOnly" man page entry to explain that there isn't
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really any point to messing with it. Resolves ticket 5005.
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- Document the GiveGuardFlagTo_CVE_2011_2768_VulnerableRelays
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directory authority option (introduced in Tor 0.2.2.34).
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- Downgrade the "We're missing a certificate" message from notice
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to info: people kept mistaking it for a real problem, whereas it
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is seldom the problem even when we are failing to bootstrap. Fixes
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bug 5067; bugfix on 0.2.0.10-alpha.
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- Correctly spell "connect" in a log message on failure to create a
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controlsocket. Fixes bug 4803; bugfix on 0.2.2.26-beta.
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- Clarify the behavior of MaxCircuitDirtiness with hidden service
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circuits. Fixes issue 5259.
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o Minor features:
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- Directory authorities now reject versions of Tor older than
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0.2.1.30, and Tor versions between 0.2.2.1-alpha and 0.2.2.20-alpha
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inclusive. These versions accounted for only a small fraction of
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the Tor network, and have numerous known security issues. Resolves
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issue 4788.
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- Update to the May 1 2012 Maxmind GeoLite Country database.
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- Feature removal:
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- When sending or relaying a RELAY_EARLY cell, we used to convert
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it to a RELAY cell if the connection was using the v1 link
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protocol. This was a workaround for older versions of Tor, which
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didn't handle RELAY_EARLY cells properly. Now that all supported
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versions can handle RELAY_EARLY cells, and now that we're enforcing
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the "no RELAY_EXTEND commands except in RELAY_EARLY cells" rule,
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remove this workaround. Addresses bug 4786.
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2011-12-16 18:52:58 +01:00
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Changes in version 0.2.2.35 - 2011-12-16
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Tor 0.2.2.35 fixes a critical heap-overflow security issue in Tor's
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buffers code. Absolutely everybody should upgrade.
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The bug relied on an incorrect calculation when making data continuous
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in one of our IO buffers, if the first chunk of the buffer was
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misaligned by just the wrong amount. The miscalculation would allow an
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attacker to overflow a piece of heap-allocated memory. To mount this
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attack, the attacker would need to either open a SOCKS connection to
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Tor's SocksPort (usually restricted to localhost), or target a Tor
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instance configured to make its connections through a SOCKS proxy
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(which Tor does not do by default).
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Good security practice requires that all heap-overflow bugs should be
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presumed to be exploitable until proven otherwise, so we are treating
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this as a potential code execution attack. Please upgrade immediately!
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This bug does not affect bufferevents-based builds of Tor. Special
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thanks to "Vektor" for reporting this issue to us!
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Tor 0.2.2.35 also fixes several bugs in previous versions, including
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crash bugs for unusual configurations, and a long-term bug that
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would prevent Tor from starting on Windows machines with draconian
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AV software.
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With this release, we remind everyone that 0.2.0.x has reached its
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formal end-of-life. Those Tor versions have many known flaws, and
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nobody should be using them. You should upgrade -- ideally to the
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0.2.2.x series. If you're using a Linux or BSD and its packages are
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obsolete, stop using those packages and upgrade anyway.
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The Tor 0.2.1.x series is also approaching its end-of-life: it will no
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longer receive support after some time in early 2012.
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o Major bugfixes:
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- Fix a heap overflow bug that could occur when trying to pull
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data into the first chunk of a buffer, when that chunk had
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already had some data drained from it. Fixes CVE-2011-2778;
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bugfix on 0.2.0.16-alpha. Reported by "Vektor".
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- Initialize Libevent with the EVENT_BASE_FLAG_NOLOCK flag enabled, so
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that it doesn't attempt to allocate a socketpair. This could cause
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some problems on Windows systems with overzealous firewalls. Fix for
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bug 4457; workaround for Libevent versions 2.0.1-alpha through
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2.0.15-stable.
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- If we mark an OR connection for close based on a cell we process,
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don't process any further cells on it. We already avoid further
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reads on marked-for-close connections, but now we also discard the
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cells we'd already read. Fixes bug 4299; bugfix on 0.2.0.10-alpha,
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which was the first version where we might mark a connection for
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close based on processing a cell on it.
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- Correctly sanity-check that we don't underflow on a memory
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allocation (and then assert) for hidden service introduction
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point decryption. Bug discovered by Dan Rosenberg. Fixes bug 4410;
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bugfix on 0.2.1.5-alpha.
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- Fix a memory leak when we check whether a hidden service
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descriptor has any usable introduction points left. Fixes bug
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4424. Bugfix on 0.2.2.25-alpha.
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- Don't crash when we're running as a relay and don't have a GeoIP
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file. Bugfix on 0.2.2.34; fixes bug 4340. This backports a fix
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we've had in the 0.2.3.x branch already.
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- When running as a client, do not print a misleading (and plain
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wrong) log message that we're collecting "directory request"
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statistics: clients don't collect statistics. Also don't create a
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useless (because empty) stats file in the stats/ directory. Fixes
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bug 4353; bugfix on 0.2.2.34.
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o Minor bugfixes:
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- Detect failure to initialize Libevent. This fix provides better
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detection for future instances of bug 4457.
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- Avoid frequent calls to the fairly expensive cull_wedged_cpuworkers
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function. This was eating up hideously large amounts of time on some
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busy servers. Fixes bug 4518; bugfix on 0.0.9.8.
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- Resolve an integer overflow bug in smartlist_ensure_capacity().
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Fixes bug 4230; bugfix on Tor 0.1.0.1-rc. Based on a patch by
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Mansour Moufid.
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- Don't warn about unused log_mutex in log.c when building with
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--disable-threads using a recent GCC. Fixes bug 4437; bugfix on
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0.1.0.6-rc which introduced --disable-threads.
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- When configuring, starting, or stopping an NT service, stop
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immediately after the service configuration attempt has succeeded
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or failed. Fixes bug 3963; bugfix on 0.2.0.7-alpha.
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- When sending a NETINFO cell, include the original address
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received for the other side, not its canonical address. Found
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by "troll_un"; fixes bug 4349; bugfix on 0.2.0.10-alpha.
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- Fix a typo in a hibernation-related log message. Fixes bug 4331;
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bugfix on 0.2.2.23-alpha; found by "tmpname0901".
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- Fix a memory leak in launch_direct_bridge_descriptor_fetch() that
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occurred when a client tried to fetch a descriptor for a bridge
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in ExcludeNodes. Fixes bug 4383; bugfix on 0.2.2.25-alpha.
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- Backport fixes for a pair of compilation warnings on Windows.
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Fixes bug 4521; bugfix on 0.2.2.28-beta and on 0.2.2.29-beta.
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- If we had ever tried to call tor_addr_to_str on an address of
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unknown type, we would have done a strdup on an uninitialized
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buffer. Now we won't. Fixes bug 4529; bugfix on 0.2.1.3-alpha.
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Reported by "troll_un".
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- Correctly detect and handle transient lookup failures from
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tor_addr_lookup. Fixes bug 4530; bugfix on 0.2.1.5-alpha.
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Reported by "troll_un".
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- Fix null-pointer access that could occur if TLS allocation failed.
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Fixes bug 4531; bugfix on 0.2.0.20-rc. Found by "troll_un".
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- Use tor_socket_t type for listener argument to accept(). Fixes bug
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4535; bugfix on 0.2.2.28-beta. Found by "troll_un".
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o Minor features:
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- Add two new config options for directory authorities:
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AuthDirFastGuarantee sets a bandwidth threshold for guaranteeing the
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Fast flag, and AuthDirGuardBWGuarantee sets a bandwidth threshold
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that is always sufficient to satisfy the bandwidth requirement for
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the Guard flag. Now it will be easier for researchers to simulate
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Tor networks with different values. Resolves ticket 4484.
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- When Tor ignores a hidden service specified in its configuration,
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include the hidden service's directory in the warning message.
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Previously, we would only tell the user that some hidden service
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was ignored. Bugfix on 0.0.6; fixes bug 4426.
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- Update to the December 6 2011 Maxmind GeoLite Country database.
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o Packaging changes:
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- Make it easier to automate expert package builds on Windows,
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by removing an absolute path from makensis.exe command.
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|
|
2011-10-27 02:41:51 +02:00
|
|
|
Changes in version 0.2.2.34 - 2011-10-26
|
|
|
|
|
Tor 0.2.2.34 fixes a critical anonymity vulnerability where an attacker
|
|
|
|
|
can deanonymize Tor users. Everybody should upgrade.
|
|
|
|
|
|
|
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|
|
The attack relies on four components: 1) Clients reuse their TLS cert
|
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|
|
|
when talking to different relays, so relays can recognize a user by
|
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|
|
|
the identity key in her cert. 2) An attacker who knows the client's
|
|
|
|
|
identity key can probe each guard relay to see if that identity key
|
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|
|
|
is connected to that guard relay right now. 3) A variety of active
|
|
|
|
|
attacks in the literature (starting from "Low-Cost Traffic Analysis
|
|
|
|
|
of Tor" by Murdoch and Danezis in 2005) allow a malicious website to
|
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|
|
|
discover the guard relays that a Tor user visiting the website is using.
|
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|
|
4) Clients typically pick three guards at random, so the set of guards
|
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|
|
for a given user could well be a unique fingerprint for her. This
|
|
|
|
|
release fixes components #1 and #2, which is enough to block the attack;
|
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|
|
the other two remain as open research problems. Special thanks to
|
|
|
|
|
"frosty_un" for reporting the issue to us!
|
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|
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|
Clients should upgrade so they are no longer recognizable by the TLS
|
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|
|
certs they present. Relays should upgrade so they no longer allow a
|
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|
|
remote attacker to probe them to test whether unpatched clients are
|
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|
|
currently connected to them.
|
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|
This release also fixes several vulnerabilities that allow an attacker
|
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|
|
to enumerate bridge relays. Some bridge enumeration attacks still
|
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|
|
|
remain; see for example proposal 188.
|
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|
|
|
|
|
|
|
|
o Privacy/anonymity fixes (clients):
|
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|
|
|
- Clients and bridges no longer send TLS certificate chains on
|
2011-10-28 02:15:50 +02:00
|
|
|
outgoing OR connections. Previously, each client or bridge would
|
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|
|
|
use the same cert chain for all outgoing OR connections until
|
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|
|
|
its IP address changes, which allowed any relay that the client
|
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|
|
or bridge contacted to determine which entry guards it is using.
|
2011-10-27 02:41:51 +02:00
|
|
|
Fixes CVE-2011-2768. Bugfix on 0.0.9pre5; found by "frosty_un".
|
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|
|
|
- If a relay receives a CREATE_FAST cell on a TLS connection, it
|
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|
|
no longer considers that connection as suitable for satisfying a
|
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|
|
circuit EXTEND request. Now relays can protect clients from the
|
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|
|
CVE-2011-2768 issue even if the clients haven't upgraded yet.
|
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|
|
- Directory authorities no longer assign the Guard flag to relays
|
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|
|
that haven't upgraded to the above "refuse EXTEND requests
|
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|
|
|
to client connections" fix. Now directory authorities can
|
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|
|
|
protect clients from the CVE-2011-2768 issue even if neither
|
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|
|
the clients nor the relays have upgraded yet. There's a new
|
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|
|
"GiveGuardFlagTo_CVE_2011_2768_VulnerableRelays" config option
|
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|
|
to let us transition smoothly, else tomorrow there would be no
|
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|
|
|
guard relays.
|
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|
|
|
|
|
|
|
|
o Privacy/anonymity fixes (bridge enumeration):
|
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|
|
|
- Bridge relays now do their directory fetches inside Tor TLS
|
|
|
|
|
connections, like all the other clients do, rather than connecting
|
|
|
|
|
directly to the DirPort like public relays do. Removes another
|
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|
|
|
avenue for enumerating bridges. Fixes bug 4115; bugfix on 0.2.0.35.
|
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|
|
- Bridges relays now build circuits for themselves in a more similar
|
|
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|
|
way to how clients build them. Removes another avenue for
|
|
|
|
|
enumerating bridges. Fixes bug 4124; bugfix on 0.2.0.3-alpha,
|
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|
|
|
when bridges were introduced.
|
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|
|
- Bridges now refuse CREATE or CREATE_FAST cells on OR connections
|
|
|
|
|
that they initiated. Relays could distinguish incoming bridge
|
|
|
|
|
connections from client connections, creating another avenue for
|
|
|
|
|
enumerating bridges. Fixes CVE-2011-2769. Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
Found by "frosty_un".
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fix a crash bug when changing node restrictions while a DNS lookup
|
|
|
|
|
is in-progress. Fixes bug 4259; bugfix on 0.2.2.25-alpha. Bugfix
|
|
|
|
|
by "Tey'".
|
|
|
|
|
- Don't launch a useless circuit after failing to use one of a
|
|
|
|
|
hidden service's introduction points. Previously, we would
|
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|
|
launch a new introduction circuit, but not set the hidden service
|
|
|
|
|
which that circuit was intended to connect to, so it would never
|
|
|
|
|
actually be used. A different piece of code would then create a
|
|
|
|
|
new introduction circuit correctly. Bug reported by katmagic and
|
|
|
|
|
found by Sebastian Hahn. Bugfix on 0.2.1.13-alpha; fixes bug 4212.
|
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|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Change an integer overflow check in the OpenBSD_Malloc code so
|
|
|
|
|
that GCC is less likely to eliminate it as impossible. Patch
|
|
|
|
|
from Mansour Moufid. Fixes bug 4059.
|
|
|
|
|
- When a hidden service turns an extra service-side introduction
|
|
|
|
|
circuit into a general-purpose circuit, free the rend_data and
|
|
|
|
|
intro_key fields first, so we won't leak memory if the circuit
|
|
|
|
|
is cannibalized for use as another service-side introduction
|
|
|
|
|
circuit. Bugfix on 0.2.1.7-alpha; fixes bug 4251.
|
|
|
|
|
- Bridges now skip DNS self-tests, to act a little more stealthily.
|
|
|
|
|
Fixes bug 4201; bugfix on 0.2.0.3-alpha, which first introduced
|
|
|
|
|
bridges. Patch by "warms0x".
|
|
|
|
|
- Fix internal bug-checking logic that was supposed to catch
|
|
|
|
|
failures in digest generation so that it will fail more robustly
|
|
|
|
|
if we ask for a nonexistent algorithm. Found by Coverity Scan.
|
|
|
|
|
Bugfix on 0.2.2.1-alpha; fixes Coverity CID 479.
|
|
|
|
|
- Report any failure in init_keys() calls launched because our
|
|
|
|
|
IP address has changed. Spotted by Coverity Scan. Bugfix on
|
|
|
|
|
0.1.1.4-alpha; fixes CID 484.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (log messages and documentation):
|
|
|
|
|
- Remove a confusing dollar sign from the example fingerprint in the
|
|
|
|
|
man page, and also make the example fingerprint a valid one. Fixes
|
|
|
|
|
bug 4309; bugfix on 0.2.1.3-alpha.
|
|
|
|
|
- The next version of Windows will be called Windows 8, and it has
|
|
|
|
|
a major version of 6, minor version of 2. Correctly identify that
|
|
|
|
|
version instead of calling it "Very recent version". Resolves
|
|
|
|
|
ticket 4153; reported by funkstar.
|
|
|
|
|
- Downgrade log messages about circuit timeout calibration from
|
|
|
|
|
"notice" to "info": they don't require or suggest any human
|
|
|
|
|
intervention. Patch from Tom Lowenthal. Fixes bug 4063;
|
|
|
|
|
bugfix on 0.2.2.14-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Turn on directory request statistics by default and include them in
|
|
|
|
|
extra-info descriptors. Don't break if we have no GeoIP database.
|
|
|
|
|
Backported from 0.2.3.1-alpha; implements ticket 3951.
|
|
|
|
|
- Update to the October 4 2011 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.2.1.31 - 2011-10-26
|
|
|
|
|
Tor 0.2.1.31 backports important security and privacy fixes for
|
|
|
|
|
oldstable. This release is intended only for package maintainers and
|
|
|
|
|
others who cannot use the 0.2.2 stable series. All others should be
|
|
|
|
|
using Tor 0.2.2.x or newer.
|
|
|
|
|
|
|
|
|
|
o Security fixes (also included in 0.2.2.x):
|
|
|
|
|
- Replace all potentially sensitive memory comparison operations
|
|
|
|
|
with versions whose runtime does not depend on the data being
|
|
|
|
|
compared. This will help resist a class of attacks where an
|
|
|
|
|
adversary can use variations in timing information to learn
|
|
|
|
|
sensitive data. Fix for one case of bug 3122. (Safe memcmp
|
|
|
|
|
implementation by Robert Ransom based partially on code by DJB.)
|
|
|
|
|
- Fix an assert in parsing router descriptors containing IPv6
|
|
|
|
|
addresses. This one took down the directory authorities when
|
|
|
|
|
somebody tried some experimental code. Bugfix on 0.2.1.3-alpha.
|
|
|
|
|
|
|
|
|
|
o Privacy/anonymity fixes (also included in 0.2.2.x):
|
|
|
|
|
- Clients and bridges no longer send TLS certificate chains on
|
2011-10-28 02:15:50 +02:00
|
|
|
outgoing OR connections. Previously, each client or bridge would
|
|
|
|
|
use the same cert chain for all outgoing OR connections until
|
|
|
|
|
its IP address changes, which allowed any relay that the client
|
|
|
|
|
or bridge contacted to determine which entry guards it is using.
|
|
|
|
|
Fixes CVE-2011-2768. Bugfix on 0.0.9pre5; found by "frosty_un".
|
2011-10-27 02:41:51 +02:00
|
|
|
- If a relay receives a CREATE_FAST cell on a TLS connection, it
|
|
|
|
|
no longer considers that connection as suitable for satisfying a
|
|
|
|
|
circuit EXTEND request. Now relays can protect clients from the
|
|
|
|
|
CVE-2011-2768 issue even if the clients haven't upgraded yet.
|
|
|
|
|
- Bridges now refuse CREATE or CREATE_FAST cells on OR connections
|
|
|
|
|
that they initiated. Relays could distinguish incoming bridge
|
|
|
|
|
connections from client connections, creating another avenue for
|
|
|
|
|
enumerating bridges. Fixes CVE-2011-2769. Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
Found by "frosty_un".
|
|
|
|
|
- When receiving a hidden service descriptor, check that it is for
|
|
|
|
|
the hidden service we wanted. Previously, Tor would store any
|
|
|
|
|
hidden service descriptors that a directory gave it, whether it
|
|
|
|
|
wanted them or not. This wouldn't have let an attacker impersonate
|
|
|
|
|
a hidden service, but it did let directories pre-seed a client
|
|
|
|
|
with descriptors that it didn't want. Bugfix on 0.0.6.
|
|
|
|
|
- Avoid linkability based on cached hidden service descriptors: forget
|
|
|
|
|
all hidden service descriptors cached as a client when processing a
|
|
|
|
|
SIGNAL NEWNYM command. Fixes bug 3000; bugfix on 0.0.6.
|
|
|
|
|
- Make the bridge directory authority refuse to answer directory
|
|
|
|
|
requests for "all" descriptors. It used to include bridge
|
|
|
|
|
descriptors in its answer, which was a major information leak.
|
|
|
|
|
Found by "piebeer". Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
- Don't attach new streams to old rendezvous circuits after SIGNAL
|
|
|
|
|
NEWNYM. Previously, we would keep using an existing rendezvous
|
|
|
|
|
circuit if it remained open (i.e. if it were kept open by a
|
|
|
|
|
long-lived stream, or if a new stream were attached to it before
|
|
|
|
|
Tor could notice that it was old and no longer in use). Bugfix on
|
|
|
|
|
0.1.1.15-rc; fixes bug 3375.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (also included in 0.2.2.x):
|
|
|
|
|
- When we restart our relay, we might get a successful connection
|
|
|
|
|
from the outside before we've started our reachability tests,
|
|
|
|
|
triggering a warning: "ORPort found reachable, but I have no
|
|
|
|
|
routerinfo yet. Failing to inform controller of success." This
|
|
|
|
|
bug was harmless unless Tor is running under a controller
|
|
|
|
|
like Vidalia, in which case the controller would never get a
|
|
|
|
|
REACHABILITY_SUCCEEDED status event. Bugfix on 0.1.2.6-alpha;
|
|
|
|
|
fixes bug 1172.
|
|
|
|
|
- Build correctly on OSX with zlib 1.2.4 and higher with all warnings
|
|
|
|
|
enabled. Fixes bug 1526.
|
|
|
|
|
- Remove undocumented option "-F" from tor-resolve: it hasn't done
|
|
|
|
|
anything since 0.2.1.16-rc.
|
|
|
|
|
- Avoid signed/unsigned comparisons by making SIZE_T_CEILING unsigned.
|
|
|
|
|
None of the cases where we did this before were wrong, but by making
|
|
|
|
|
this change we avoid warnings. Fixes bug 2475; bugfix on 0.2.1.28.
|
|
|
|
|
- Fix a rare crash bug that could occur when a client was configured
|
|
|
|
|
with a large number of bridges. Fixes bug 2629; bugfix on
|
|
|
|
|
0.2.1.2-alpha. Bugfix by trac user "shitlei".
|
|
|
|
|
- Correct the warning displayed when a rendezvous descriptor exceeds
|
|
|
|
|
the maximum size. Fixes bug 2750; bugfix on 0.2.1.5-alpha. Found by
|
|
|
|
|
John Brooks.
|
|
|
|
|
- Fix an uncommon assertion failure when running with DNSPort under
|
|
|
|
|
heavy load. Fixes bug 2933; bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- When warning about missing zlib development packages during compile,
|
|
|
|
|
give the correct package names. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Require that introduction point keys and onion keys have public
|
|
|
|
|
exponent 65537. Bugfix on 0.2.0.10-alpha.
|
|
|
|
|
- Do not crash when our configuration file becomes unreadable, for
|
|
|
|
|
example due to a permissions change, between when we start up
|
|
|
|
|
and when a controller calls SAVECONF. Fixes bug 3135; bugfix
|
|
|
|
|
on 0.0.9pre6.
|
|
|
|
|
- Fix warnings from GCC 4.6's "-Wunused-but-set-variable" option.
|
|
|
|
|
Fixes bug 3208.
|
|
|
|
|
- Always NUL-terminate the sun_path field of a sockaddr_un before
|
|
|
|
|
passing it to the kernel. (Not a security issue: kernels are
|
|
|
|
|
smart enough to reject bad sockaddr_uns.) Found by Coverity;
|
|
|
|
|
CID #428. Bugfix on Tor 0.2.0.3-alpha.
|
|
|
|
|
- Don't stack-allocate the list of supplementary GIDs when we're
|
|
|
|
|
about to log them. Stack-allocating NGROUPS_MAX gid_t elements
|
|
|
|
|
could take up to 256K, which is way too much stack. Found by
|
|
|
|
|
Coverity; CID #450. Bugfix on 0.2.1.7-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (only in 0.2.1.x):
|
|
|
|
|
- Resume using micro-version numbers in 0.2.1.x: our Debian packages
|
|
|
|
|
rely on them. Bugfix on 0.2.1.30.
|
|
|
|
|
- Use git revisions instead of svn revisions when generating our
|
|
|
|
|
micro-version numbers. Bugfix on 0.2.1.15-rc; fixes bug 2402.
|
|
|
|
|
|
|
|
|
|
o Minor features (also included in 0.2.2.x):
|
|
|
|
|
- Adjust the expiration time on our SSL session certificates to
|
|
|
|
|
better match SSL certs seen in the wild. Resolves ticket 4014.
|
|
|
|
|
- Allow nameservers with IPv6 address. Resolves bug 2574.
|
|
|
|
|
- Update to the October 4 2011 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
|
2011-09-14 01:19:38 +02:00
|
|
|
Changes in version 0.2.2.33 - 2011-09-13
|
|
|
|
|
Tor 0.2.2.33 fixes several bugs, and includes a slight tweak to Tor's
|
|
|
|
|
TLS handshake that makes relays and bridges that run this new version
|
|
|
|
|
reachable from Iran again.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Avoid an assertion failure when reloading a configuration with
|
|
|
|
|
TrackExitHosts changes. Found and fixed by 'laruldan'. Fixes bug
|
|
|
|
|
3923; bugfix on 0.2.2.25-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor features (security):
|
|
|
|
|
- Check for replays of the public-key encrypted portion of an
|
|
|
|
|
INTRODUCE1 cell, in addition to the current check for replays of
|
|
|
|
|
the g^x value. This prevents a possible class of active attacks
|
|
|
|
|
by an attacker who controls both an introduction point and a
|
|
|
|
|
rendezvous point, and who uses the malleability of AES-CTR to
|
|
|
|
|
alter the encrypted g^x portion of the INTRODUCE1 cell. We think
|
|
|
|
|
that these attacks are infeasible (requiring the attacker to send
|
|
|
|
|
on the order of zettabytes of altered cells in a short interval),
|
|
|
|
|
but we'd rather block them off in case there are any classes of
|
|
|
|
|
this attack that we missed. Reported by Willem Pinckaers.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Adjust the expiration time on our SSL session certificates to
|
|
|
|
|
better match SSL certs seen in the wild. Resolves ticket 4014.
|
|
|
|
|
- Change the default required uptime for a relay to be accepted as
|
|
|
|
|
a HSDir (hidden service directory) from 24 hours to 25 hours.
|
|
|
|
|
Improves on 0.2.0.10-alpha; resolves ticket 2649.
|
|
|
|
|
- Add a VoteOnHidServDirectoriesV2 config option to allow directory
|
|
|
|
|
authorities to abstain from voting on assignment of the HSDir
|
|
|
|
|
consensus flag. Related to bug 2649.
|
|
|
|
|
- Update to the September 6 2011 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (documentation and log messages):
|
|
|
|
|
- Correct the man page to explain that HashedControlPassword and
|
|
|
|
|
CookieAuthentication can both be set, in which case either method
|
|
|
|
|
is sufficient to authenticate to Tor. Bugfix on 0.2.0.7-alpha,
|
|
|
|
|
when we decided to allow these config options to both be set. Issue
|
|
|
|
|
raised by bug 3898.
|
|
|
|
|
- Demote the 'replay detected' log message emitted when a hidden
|
|
|
|
|
service receives the same Diffie-Hellman public key in two different
|
|
|
|
|
INTRODUCE2 cells to info level. A normal Tor client can cause that
|
|
|
|
|
log message during its normal operation. Bugfix on 0.2.1.6-alpha;
|
|
|
|
|
fixes part of bug 2442.
|
|
|
|
|
- Demote the 'INTRODUCE2 cell is too {old,new}' log message to info
|
|
|
|
|
level. There is nothing that a hidden service's operator can do
|
|
|
|
|
to fix its clients' clocks. Bugfix on 0.2.1.6-alpha; fixes part
|
|
|
|
|
of bug 2442.
|
|
|
|
|
- Clarify a log message specifying the characters permitted in
|
|
|
|
|
HiddenServiceAuthorizeClient client names. Previously, the log
|
|
|
|
|
message said that "[A-Za-z0-9+-_]" were permitted; that could have
|
|
|
|
|
given the impression that every ASCII character between "+" and "_"
|
|
|
|
|
was permitted. Now we say "[A-Za-z0-9+_-]". Bugfix on 0.2.1.5-alpha.
|
|
|
|
|
|
|
|
|
|
o Build fixes:
|
|
|
|
|
- Provide a substitute implementation of lround() for MSVC, which
|
|
|
|
|
apparently lacks it. Patch from Gisle Vanem.
|
|
|
|
|
- Clean up some code issues that prevented Tor from building on older
|
|
|
|
|
BSDs. Fixes bug 3894; reported by "grarpamp".
|
|
|
|
|
- Search for a platform-specific version of "ar" when cross-compiling.
|
|
|
|
|
Should fix builds on iOS. Resolves bug 3909, found by Marco Bonetti.
|
|
|
|
|
|
|
|
|
|
|
2011-08-27 21:05:58 +02:00
|
|
|
Changes in version 0.2.2.32 - 2011-08-27
|
2011-08-26 08:42:18 +02:00
|
|
|
The Tor 0.2.2 release series is dedicated to the memory of Andreas
|
|
|
|
|
Pfitzmann (1958-2010), a pioneer in anonymity and privacy research,
|
|
|
|
|
a founder of the PETS community, a leader in our field, a mentor,
|
2011-08-27 01:14:07 +02:00
|
|
|
and a friend. He left us with these words: "I had the possibility
|
|
|
|
|
to contribute to this world that is not as it should be. I hope I
|
|
|
|
|
could help in some areas to make the world a better place, and that
|
|
|
|
|
I could also encourage other people to be engaged in improving the
|
|
|
|
|
world. Please, stay engaged. This world needs you, your love, your
|
2011-08-27 21:05:58 +02:00
|
|
|
initiative -- now I cannot be part of that anymore."
|
2011-08-27 01:14:07 +02:00
|
|
|
|
|
|
|
|
Tor 0.2.2.32, the first stable release in the 0.2.2 branch, is finally
|
|
|
|
|
ready. More than two years in the making, this release features improved
|
|
|
|
|
client performance and hidden service reliability, better compatibility
|
|
|
|
|
for Android, correct behavior for bridges that listen on more than
|
|
|
|
|
one address, more extensible and flexible directory object handling,
|
|
|
|
|
better reporting of network statistics, improved code security, and
|
|
|
|
|
many many other features and bugfixes.
|
2011-08-26 08:42:18 +02:00
|
|
|
|
|
|
|
|
o Major features (client performance):
|
|
|
|
|
- When choosing which cells to relay first, relays now favor circuits
|
|
|
|
|
that have been quiet recently, to provide lower latency for
|
|
|
|
|
low-volume circuits. By default, relays enable or disable this
|
|
|
|
|
feature based on a setting in the consensus. They can override
|
|
|
|
|
this default by using the new "CircuitPriorityHalflife" config
|
|
|
|
|
option. Design and code by Ian Goldberg, Can Tang, and Chris
|
|
|
|
|
Alexander.
|
|
|
|
|
- Directory authorities now compute consensus weightings that instruct
|
|
|
|
|
clients how to weight relays flagged as Guard, Exit, Guard+Exit,
|
|
|
|
|
and no flag. Clients use these weightings to distribute network load
|
|
|
|
|
more evenly across these different relay types. The weightings are
|
|
|
|
|
in the consensus so we can change them globally in the future. Extra
|
|
|
|
|
thanks to "outofwords" for finding some nasty security bugs in
|
|
|
|
|
the first implementation of this feature.
|
|
|
|
|
|
|
|
|
|
o Major features (client performance, circuit build timeout):
|
|
|
|
|
- Tor now tracks how long it takes to build client-side circuits
|
|
|
|
|
over time, and adapts its timeout to local network performance.
|
|
|
|
|
Since a circuit that takes a long time to build will also provide
|
|
|
|
|
bad performance, we get significant latency improvements by
|
|
|
|
|
discarding the slowest 20% of circuits. Specifically, Tor creates
|
|
|
|
|
circuits more aggressively than usual until it has enough data
|
|
|
|
|
points for a good timeout estimate. Implements proposal 151.
|
|
|
|
|
- Circuit build timeout constants can be controlled by consensus
|
|
|
|
|
parameters. We set good defaults for these parameters based on
|
|
|
|
|
experimentation on broadband and simulated high-latency links.
|
|
|
|
|
- Circuit build time learning can be disabled via consensus parameter
|
|
|
|
|
or by the client via a LearnCircuitBuildTimeout config option. We
|
|
|
|
|
also automatically disable circuit build time calculation if either
|
|
|
|
|
AuthoritativeDirectory is set, or if we fail to write our state
|
|
|
|
|
file. Implements ticket 1296.
|
|
|
|
|
|
|
|
|
|
o Major features (relays use their capacity better):
|
|
|
|
|
- Set SO_REUSEADDR socket option on all sockets, not just
|
|
|
|
|
listeners. This should help busy exit nodes avoid running out of
|
|
|
|
|
useable ports just because all the ports have been used in the
|
|
|
|
|
near past. Resolves issue 2850.
|
|
|
|
|
- Relays now save observed peak bandwidth throughput rates to their
|
|
|
|
|
state file (along with total usage, which was already saved),
|
|
|
|
|
so that they can determine their correct estimated bandwidth on
|
|
|
|
|
restart. Resolves bug 1863, where Tor relays would reset their
|
|
|
|
|
estimated bandwidth to 0 after restarting.
|
|
|
|
|
- Lower the maximum weighted-fractional-uptime cutoff to 98%. This
|
|
|
|
|
should give us approximately 40-50% more Guard-flagged nodes,
|
|
|
|
|
improving the anonymity the Tor network can provide and also
|
|
|
|
|
decreasing the dropoff in throughput that relays experience when
|
|
|
|
|
they first get the Guard flag.
|
|
|
|
|
- Directory authorities now take changes in router IP address and
|
|
|
|
|
ORPort into account when determining router stability. Previously,
|
|
|
|
|
if a router changed its IP or ORPort, the authorities would not
|
|
|
|
|
treat it as having any downtime for the purposes of stability
|
|
|
|
|
calculation, whereas clients would experience downtime since the
|
|
|
|
|
change would take a while to propagate to them. Resolves issue 1035.
|
|
|
|
|
- New AccelName and AccelDir options add support for dynamic OpenSSL
|
|
|
|
|
hardware crypto acceleration engines.
|
|
|
|
|
|
|
|
|
|
o Major features (relays control their load better):
|
|
|
|
|
- Exit relays now try harder to block exit attempts from unknown
|
|
|
|
|
relays, to make it harder for people to use them as one-hop proxies
|
|
|
|
|
a la tortunnel. Controlled by the refuseunknownexits consensus
|
|
|
|
|
parameter (currently enabled), or you can override it on your
|
|
|
|
|
relay with the RefuseUnknownExits torrc option. Resolves bug 1751;
|
|
|
|
|
based on a variant of proposal 163.
|
|
|
|
|
- Add separate per-conn write limiting to go with the per-conn read
|
|
|
|
|
limiting. We added a global write limit in Tor 0.1.2.5-alpha,
|
|
|
|
|
but never per-conn write limits.
|
|
|
|
|
- New consensus params "bwconnrate" and "bwconnburst" to let us
|
|
|
|
|
rate-limit client connections as they enter the network. It's
|
|
|
|
|
controlled in the consensus so we can turn it on and off for
|
|
|
|
|
experiments. It's starting out off. Based on proposal 163.
|
|
|
|
|
|
|
|
|
|
o Major features (controllers):
|
|
|
|
|
- Export GeoIP information on bridge usage to controllers even if we
|
|
|
|
|
have not yet been running for 24 hours. Now Vidalia bridge operators
|
|
|
|
|
can get more accurate and immediate feedback about their
|
|
|
|
|
contributions to the network.
|
|
|
|
|
- Add an __OwningControllerProcess configuration option and a
|
|
|
|
|
TAKEOWNERSHIP control-port command. Now a Tor controller can ensure
|
|
|
|
|
that when it exits, Tor will shut down. Implements feature 3049.
|
|
|
|
|
|
|
|
|
|
o Major features (directory authorities):
|
|
|
|
|
- Directory authorities now create, vote on, and serve multiple
|
|
|
|
|
parallel formats of directory data as part of their voting process.
|
|
|
|
|
Partially implements Proposal 162: "Publish the consensus in
|
|
|
|
|
multiple flavors".
|
|
|
|
|
- Directory authorities now agree on and publish small summaries
|
|
|
|
|
of router information that clients can use in place of regular
|
|
|
|
|
server descriptors. This transition will allow Tor 0.2.3 clients
|
|
|
|
|
to use far less bandwidth for downloading information about the
|
|
|
|
|
network. Begins the implementation of Proposal 158: "Clients
|
|
|
|
|
download consensus + microdescriptors".
|
|
|
|
|
- The directory voting system is now extensible to use multiple hash
|
|
|
|
|
algorithms for signatures and resource selection. Newer formats
|
|
|
|
|
are signed with SHA256, with a possibility for moving to a better
|
|
|
|
|
hash algorithm in the future.
|
|
|
|
|
- Directory authorities can now vote on arbitary integer values as
|
|
|
|
|
part of the consensus process. This is designed to help set
|
|
|
|
|
network-wide parameters. Implements proposal 167.
|
|
|
|
|
|
|
|
|
|
o Major features and bugfixes (node selection):
|
|
|
|
|
- Revise and reconcile the meaning of the ExitNodes, EntryNodes,
|
|
|
|
|
ExcludeEntryNodes, ExcludeExitNodes, ExcludeNodes, and Strict*Nodes
|
|
|
|
|
options. Previously, we had been ambiguous in describing what
|
|
|
|
|
counted as an "exit" node, and what operations exactly "StrictNodes
|
|
|
|
|
0" would permit. This created confusion when people saw nodes built
|
|
|
|
|
through unexpected circuits, and made it hard to tell real bugs from
|
|
|
|
|
surprises. Now the intended behavior is:
|
|
|
|
|
. "Exit", in the context of ExitNodes and ExcludeExitNodes, means
|
|
|
|
|
a node that delivers user traffic outside the Tor network.
|
|
|
|
|
. "Entry", in the context of EntryNodes, means a node used as the
|
|
|
|
|
first hop of a multihop circuit. It doesn't include direct
|
|
|
|
|
connections to directory servers.
|
|
|
|
|
. "ExcludeNodes" applies to all nodes.
|
|
|
|
|
. "StrictNodes" changes the behavior of ExcludeNodes only. When
|
|
|
|
|
StrictNodes is set, Tor should avoid all nodes listed in
|
|
|
|
|
ExcludeNodes, even when it will make user requests fail. When
|
|
|
|
|
StrictNodes is *not* set, then Tor should follow ExcludeNodes
|
|
|
|
|
whenever it can, except when it must use an excluded node to
|
|
|
|
|
perform self-tests, connect to a hidden service, provide a
|
|
|
|
|
hidden service, fulfill a .exit request, upload directory
|
|
|
|
|
information, or fetch directory information.
|
|
|
|
|
Collectively, the changes to implement the behavior fix bug 1090.
|
|
|
|
|
- If EntryNodes, ExitNodes, ExcludeNodes, or ExcludeExitNodes
|
|
|
|
|
change during a config reload, mark and discard all our origin
|
|
|
|
|
circuits. This fix should address edge cases where we change the
|
|
|
|
|
config options and but then choose a circuit that we created before
|
|
|
|
|
the change.
|
|
|
|
|
- Make EntryNodes config option much more aggressive even when
|
|
|
|
|
StrictNodes is not set. Before it would prepend your requested
|
|
|
|
|
entrynodes to your list of guard nodes, but feel free to use others
|
|
|
|
|
after that. Now it chooses only from your EntryNodes if any of
|
|
|
|
|
those are available, and only falls back to others if a) they're
|
|
|
|
|
all down and b) StrictNodes is not set.
|
|
|
|
|
- Now we refresh your entry guards from EntryNodes at each consensus
|
|
|
|
|
fetch -- rather than just at startup and then they slowly rot as
|
|
|
|
|
the network changes.
|
|
|
|
|
- Add support for the country code "{??}" in torrc options like
|
|
|
|
|
ExcludeNodes, to indicate all routers of unknown country. Closes
|
|
|
|
|
bug 1094.
|
|
|
|
|
- ExcludeNodes now takes precedence over EntryNodes and ExitNodes: if
|
|
|
|
|
a node is listed in both, it's treated as excluded.
|
|
|
|
|
- ExcludeNodes now applies to directory nodes -- as a preference if
|
|
|
|
|
StrictNodes is 0, or an absolute requirement if StrictNodes is 1.
|
|
|
|
|
Don't exclude all the directory authorities and set StrictNodes to 1
|
|
|
|
|
unless you really want your Tor to break.
|
|
|
|
|
- ExcludeNodes and ExcludeExitNodes now override exit enclaving.
|
|
|
|
|
- ExcludeExitNodes now overrides .exit requests.
|
|
|
|
|
- We don't use bridges listed in ExcludeNodes.
|
|
|
|
|
- When StrictNodes is 1:
|
|
|
|
|
. We now apply ExcludeNodes to hidden service introduction points
|
|
|
|
|
and to rendezvous points selected by hidden service users. This
|
|
|
|
|
can make your hidden service less reliable: use it with caution!
|
|
|
|
|
. If we have used ExcludeNodes on ourself, do not try relay
|
|
|
|
|
reachability self-tests.
|
|
|
|
|
. If we have excluded all the directory authorities, we will not
|
|
|
|
|
even try to upload our descriptor if we're a relay.
|
|
|
|
|
. Do not honor .exit requests to an excluded node.
|
|
|
|
|
- When the set of permitted nodes changes, we now remove any mappings
|
|
|
|
|
introduced via TrackExitHosts to now-excluded nodes. Bugfix on
|
|
|
|
|
0.1.0.1-rc.
|
|
|
|
|
- We never cannibalize a circuit that had excluded nodes on it, even
|
|
|
|
|
if StrictNodes is 0. Bugfix on 0.1.0.1-rc.
|
|
|
|
|
- Improve log messages related to excluded nodes.
|
|
|
|
|
|
|
|
|
|
o Major features (misc):
|
2011-08-27 01:14:07 +02:00
|
|
|
- Numerous changes, bugfixes, and workarounds from Nathan Freitas
|
|
|
|
|
to help Tor build correctly for Android phones.
|
2011-08-26 08:42:18 +02:00
|
|
|
- The options SocksPort, ControlPort, and so on now all accept a
|
|
|
|
|
value "auto" that opens a socket on an OS-selected port. A
|
|
|
|
|
new ControlPortWriteToFile option tells Tor to write its
|
|
|
|
|
actual control port or ports to a chosen file. If the option
|
|
|
|
|
ControlPortFileGroupReadable is set, the file is created as
|
|
|
|
|
group-readable. Now users can run two Tor clients on the same
|
|
|
|
|
system without needing to manually mess with parameters. Resolves
|
|
|
|
|
part of ticket 3076.
|
|
|
|
|
- Tor now supports tunneling all of its outgoing connections over
|
|
|
|
|
a SOCKS proxy, using the SOCKS4Proxy and/or SOCKS5Proxy
|
|
|
|
|
configuration options. Code by Christopher Davis.
|
|
|
|
|
|
|
|
|
|
o Code security improvements:
|
|
|
|
|
- Replace all potentially sensitive memory comparison operations
|
|
|
|
|
with versions whose runtime does not depend on the data being
|
|
|
|
|
compared. This will help resist a class of attacks where an
|
|
|
|
|
adversary can use variations in timing information to learn
|
|
|
|
|
sensitive data. Fix for one case of bug 3122. (Safe memcmp
|
|
|
|
|
implementation by Robert Ransom based partially on code by DJB.)
|
|
|
|
|
- Enable Address Space Layout Randomization (ASLR) and Data Execution
|
|
|
|
|
Prevention (DEP) by default on Windows to make it harder for
|
|
|
|
|
attackers to exploit vulnerabilities. Patch from John Brooks.
|
|
|
|
|
- New "--enable-gcc-hardening" ./configure flag (off by default)
|
|
|
|
|
to turn on gcc compile time hardening options. It ensures
|
|
|
|
|
that signed ints have defined behavior (-fwrapv), enables
|
|
|
|
|
-D_FORTIFY_SOURCE=2 (requiring -O2), adds stack smashing protection
|
|
|
|
|
with canaries (-fstack-protector-all), turns on ASLR protection if
|
|
|
|
|
supported by the kernel (-fPIE, -pie), and adds additional security
|
|
|
|
|
related warnings. Verified to work on Mac OS X and Debian Lenny.
|
|
|
|
|
- New "--enable-linker-hardening" ./configure flag (off by default)
|
|
|
|
|
to turn on ELF specific hardening features (relro, now). This does
|
|
|
|
|
not work with Mac OS X or any other non-ELF binary format.
|
|
|
|
|
- Always search the Windows system directory for system DLLs, and
|
|
|
|
|
nowhere else. Bugfix on 0.1.1.23; fixes bug 1954.
|
|
|
|
|
- New DisableAllSwap option. If set to 1, Tor will attempt to lock all
|
|
|
|
|
current and future memory pages via mlockall(). On supported
|
|
|
|
|
platforms (modern Linux and probably BSD but not Windows or OS X),
|
|
|
|
|
this should effectively disable any and all attempts to page out
|
|
|
|
|
memory. This option requires that you start your Tor as root --
|
|
|
|
|
if you use DisableAllSwap, please consider using the User option
|
|
|
|
|
to properly reduce the privileges of your Tor.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- Fix crash bug on platforms where gmtime and localtime can return
|
|
|
|
|
NULL. Windows 7 users were running into this one. Fixes part of bug
|
|
|
|
|
2077. Bugfix on all versions of Tor. Found by boboper.
|
|
|
|
|
- Introduce minimum/maximum values that clients will believe
|
|
|
|
|
from the consensus. Now we'll have a better chance to avoid crashes
|
|
|
|
|
or worse when a consensus param has a weird value.
|
|
|
|
|
- Fix a rare crash bug that could occur when a client was configured
|
|
|
|
|
with a large number of bridges. Fixes bug 2629; bugfix on
|
|
|
|
|
0.2.1.2-alpha. Bugfix by trac user "shitlei".
|
|
|
|
|
- Do not crash when our configuration file becomes unreadable, for
|
|
|
|
|
example due to a permissions change, between when we start up
|
|
|
|
|
and when a controller calls SAVECONF. Fixes bug 3135; bugfix
|
|
|
|
|
on 0.0.9pre6.
|
|
|
|
|
- If we're in the pathological case where there's no exit bandwidth
|
|
|
|
|
but there is non-exit bandwidth, or no guard bandwidth but there
|
|
|
|
|
is non-guard bandwidth, don't crash during path selection. Bugfix
|
|
|
|
|
on 0.2.0.3-alpha.
|
|
|
|
|
- Fix a crash bug when trying to initialize the evdns module in
|
|
|
|
|
Libevent 2. Bugfix on 0.2.1.16-rc.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (stability):
|
|
|
|
|
- Fix an assert in parsing router descriptors containing IPv6
|
|
|
|
|
addresses. This one took down the directory authorities when
|
|
|
|
|
somebody tried some experimental code. Bugfix on 0.2.1.3-alpha.
|
|
|
|
|
- Fix an uncommon assertion failure when running with DNSPort under
|
|
|
|
|
heavy load. Fixes bug 2933; bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Treat an unset $HOME like an empty $HOME rather than triggering an
|
|
|
|
|
assert. Bugfix on 0.0.8pre1; fixes bug 1522.
|
|
|
|
|
- More gracefully handle corrupt state files, removing asserts
|
|
|
|
|
in favor of saving a backup and resetting state.
|
|
|
|
|
- Instead of giving an assertion failure on an internal mismatch
|
|
|
|
|
on estimated freelist size, just log a BUG warning and try later.
|
|
|
|
|
Mitigates but does not fix bug 1125.
|
|
|
|
|
- Fix an assert that got triggered when using the TestingTorNetwork
|
|
|
|
|
configuration option and then issuing a GETINFO config-text control
|
|
|
|
|
command. Fixes bug 2250; bugfix on 0.2.1.2-alpha.
|
|
|
|
|
- If the cached cert file is unparseable, warn but don't exit.
|
|
|
|
|
|
|
|
|
|
o Privacy fixes (relays/bridges):
|
|
|
|
|
- Don't list Windows capabilities in relay descriptors. We never made
|
|
|
|
|
use of them, and maybe it's a bad idea to publish them. Bugfix
|
|
|
|
|
on 0.1.1.8-alpha.
|
|
|
|
|
- If the Nickname configuration option isn't given, Tor would pick a
|
|
|
|
|
nickname based on the local hostname as the nickname for a relay.
|
|
|
|
|
Because nicknames are not very important in today's Tor and the
|
|
|
|
|
"Unnamed" nickname has been implemented, this is now problematic
|
|
|
|
|
behavior: It leaks information about the hostname without being
|
|
|
|
|
useful at all. Fixes bug 2979; bugfix on 0.1.2.2-alpha, which
|
|
|
|
|
introduced the Unnamed nickname. Reported by tagnaq.
|
|
|
|
|
- Maintain separate TLS contexts and certificates for incoming and
|
|
|
|
|
outgoing connections in bridge relays. Previously we would use the
|
|
|
|
|
same TLS contexts and certs for incoming and outgoing connections.
|
|
|
|
|
Bugfix on 0.2.0.3-alpha; addresses bug 988.
|
|
|
|
|
- Maintain separate identity keys for incoming and outgoing TLS
|
|
|
|
|
contexts in bridge relays. Previously we would use the same
|
|
|
|
|
identity keys for incoming and outgoing TLS contexts. Bugfix on
|
|
|
|
|
0.2.0.3-alpha; addresses the other half of bug 988.
|
|
|
|
|
- Make the bridge directory authority refuse to answer directory
|
|
|
|
|
requests for "all descriptors". It used to include bridge
|
|
|
|
|
descriptors in its answer, which was a major information leak.
|
|
|
|
|
Found by "piebeer". Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
|
|
|
|
|
o Privacy fixes (clients):
|
|
|
|
|
- When receiving a hidden service descriptor, check that it is for
|
|
|
|
|
the hidden service we wanted. Previously, Tor would store any
|
|
|
|
|
hidden service descriptors that a directory gave it, whether it
|
|
|
|
|
wanted them or not. This wouldn't have let an attacker impersonate
|
|
|
|
|
a hidden service, but it did let directories pre-seed a client
|
|
|
|
|
with descriptors that it didn't want. Bugfix on 0.0.6.
|
|
|
|
|
- Start the process of disabling ".exit" address notation, since it
|
|
|
|
|
can be used for a variety of esoteric application-level attacks
|
|
|
|
|
on users. To reenable it, set "AllowDotExit 1" in your torrc. Fix
|
|
|
|
|
on 0.0.9rc5.
|
|
|
|
|
- Reject attempts at the client side to open connections to private
|
|
|
|
|
IP addresses (like 127.0.0.1, 10.0.0.1, and so on) with
|
|
|
|
|
a randomly chosen exit node. Attempts to do so are always
|
|
|
|
|
ill-defined, generally prevented by exit policies, and usually
|
|
|
|
|
in error. This will also help to detect loops in transparent
|
|
|
|
|
proxy configurations. You can disable this feature by setting
|
|
|
|
|
"ClientRejectInternalAddresses 0" in your torrc.
|
|
|
|
|
- Log a notice when we get a new control connection. Now it's easier
|
|
|
|
|
for security-conscious users to recognize when a local application
|
|
|
|
|
is knocking on their controller door. Suggested by bug 1196.
|
|
|
|
|
|
|
|
|
|
o Privacy fixes (newnym):
|
|
|
|
|
- Avoid linkability based on cached hidden service descriptors: forget
|
|
|
|
|
all hidden service descriptors cached as a client when processing a
|
|
|
|
|
SIGNAL NEWNYM command. Fixes bug 3000; bugfix on 0.0.6.
|
|
|
|
|
- On SIGHUP, do not clear out all TrackHostExits mappings, client
|
|
|
|
|
DNS cache entries, and virtual address mappings: that's what
|
|
|
|
|
NEWNYM is for. Fixes bug 1345; bugfix on 0.1.0.1-rc.
|
|
|
|
|
- Don't attach new streams to old rendezvous circuits after SIGNAL
|
|
|
|
|
NEWNYM. Previously, we would keep using an existing rendezvous
|
|
|
|
|
circuit if it remained open (i.e. if it were kept open by a
|
|
|
|
|
long-lived stream, or if a new stream were attached to it before
|
|
|
|
|
Tor could notice that it was old and no longer in use). Bugfix on
|
|
|
|
|
0.1.1.15-rc; fixes bug 3375.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (relay bandwidth accounting):
|
|
|
|
|
- Fix a bug that could break accounting on 64-bit systems with large
|
|
|
|
|
time_t values, making them hibernate for impossibly long intervals.
|
|
|
|
|
Fixes bug 2146. Bugfix on 0.0.9pre6; fix by boboper.
|
|
|
|
|
- Fix a bug in bandwidth accounting that could make us use twice
|
|
|
|
|
the intended bandwidth when our interval start changes due to
|
|
|
|
|
daylight saving time. Now we tolerate skew in stored vs computed
|
|
|
|
|
interval starts: if the start of the period changes by no more than
|
|
|
|
|
50% of the period's duration, we remember bytes that we transferred
|
|
|
|
|
in the old period. Fixes bug 1511; bugfix on 0.0.9pre5.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (bridges):
|
|
|
|
|
- Bridges now use "reject *:*" as their default exit policy. Bugfix
|
|
|
|
|
on 0.2.0.3-alpha. Fixes bug 1113.
|
|
|
|
|
- If you configure your bridge with a known identity fingerprint,
|
|
|
|
|
and the bridge authority is unreachable (as it is in at least
|
|
|
|
|
one country now), fall back to directly requesting the descriptor
|
|
|
|
|
from the bridge. Finishes the feature started in 0.2.0.10-alpha;
|
|
|
|
|
closes bug 1138.
|
|
|
|
|
- Fix a bug where bridge users who configure the non-canonical
|
|
|
|
|
address of a bridge automatically switch to its canonical
|
|
|
|
|
address. If a bridge listens at more than one address, it
|
|
|
|
|
should be able to advertise those addresses independently and
|
|
|
|
|
any non-blocked addresses should continue to work. Bugfix on Tor
|
|
|
|
|
0.2.0.3-alpha. Fixes bug 2510.
|
|
|
|
|
- If you configure Tor to use bridge A, and then quit and
|
|
|
|
|
configure Tor to use bridge B instead (or if you change Tor
|
|
|
|
|
to use bridge B via the controller), it would happily continue
|
|
|
|
|
to use bridge A if it's still reachable. While this behavior is
|
|
|
|
|
a feature if your goal is connectivity, in some scenarios it's a
|
|
|
|
|
dangerous bug. Bugfix on Tor 0.2.0.1-alpha; fixes bug 2511.
|
|
|
|
|
- When the controller configures a new bridge, don't wait 10 to 60
|
|
|
|
|
seconds before trying to fetch its descriptor. Bugfix on
|
|
|
|
|
0.2.0.3-alpha; fixes bug 3198 (suggested by 2355).
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (directory authorities):
|
|
|
|
|
- Many relays have been falling out of the consensus lately because
|
|
|
|
|
not enough authorities know about their descriptor for them to get
|
|
|
|
|
a majority of votes. When we deprecated the v2 directory protocol,
|
|
|
|
|
we got rid of the only way that v3 authorities can hear from each
|
|
|
|
|
other about other descriptors. Now authorities examine every v3
|
|
|
|
|
vote for new descriptors, and fetch them from that authority. Bugfix
|
|
|
|
|
on 0.2.1.23.
|
|
|
|
|
- Authorities could be tricked into giving out the Exit flag to relays
|
|
|
|
|
that didn't allow exiting to any ports. This bug could screw
|
|
|
|
|
with load balancing and stats. Bugfix on 0.1.1.6-alpha; fixes bug
|
|
|
|
|
1238. Bug discovered by Martin Kowalczyk.
|
|
|
|
|
- If all authorities restart at once right before a consensus vote,
|
|
|
|
|
nobody will vote about "Running", and clients will get a consensus
|
|
|
|
|
with no usable relays. Instead, authorities refuse to build a
|
|
|
|
|
consensus if this happens. Bugfix on 0.2.0.10-alpha; fixes bug 1066.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (stream-level fairness):
|
|
|
|
|
- When receiving a circuit-level SENDME for a blocked circuit, try
|
|
|
|
|
to package cells fairly from all the streams that had previously
|
|
|
|
|
been blocked on that circuit. Previously, we had started with the
|
|
|
|
|
oldest stream, and allowed each stream to potentially exhaust
|
|
|
|
|
the circuit's package window. This gave older streams on any
|
|
|
|
|
given circuit priority over newer ones. Fixes bug 1937. Detected
|
|
|
|
|
originally by Camilo Viecco. This bug was introduced before the
|
|
|
|
|
first Tor release, in svn commit r152: it is the new winner of
|
|
|
|
|
the longest-lived bug prize.
|
|
|
|
|
- Fix a stream fairness bug that would cause newer streams on a given
|
|
|
|
|
circuit to get preference when reading bytes from the origin or
|
|
|
|
|
destination. Fixes bug 2210. Fix by Mashael AlSabah. This bug was
|
|
|
|
|
introduced before the first Tor release, in svn revision r152.
|
|
|
|
|
- When the exit relay got a circuit-level sendme cell, it started
|
|
|
|
|
reading on the exit streams, even if had 500 cells queued in the
|
|
|
|
|
circuit queue already, so the circuit queue just grew and grew in
|
|
|
|
|
some cases. We fix this by not re-enabling reading on receipt of a
|
|
|
|
|
sendme cell when the cell queue is blocked. Fixes bug 1653. Bugfix
|
|
|
|
|
on 0.2.0.1-alpha. Detected by Mashael AlSabah. Original patch by
|
|
|
|
|
"yetonetime".
|
|
|
|
|
- Newly created streams were allowed to read cells onto circuits,
|
|
|
|
|
even if the circuit's cell queue was blocked and waiting to drain.
|
|
|
|
|
This created potential unfairness, as older streams would be
|
|
|
|
|
blocked, but newer streams would gladly fill the queue completely.
|
|
|
|
|
We add code to detect this situation and prevent any stream from
|
|
|
|
|
getting more than one free cell. Bugfix on 0.2.0.1-alpha. Partially
|
|
|
|
|
fixes bug 1298.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (hidden services):
|
|
|
|
|
- Apply circuit timeouts to opened hidden-service-related circuits
|
|
|
|
|
based on the correct start time. Previously, we would apply the
|
|
|
|
|
circuit build timeout based on time since the circuit's creation;
|
|
|
|
|
it was supposed to be applied based on time since the circuit
|
|
|
|
|
entered its current state. Bugfix on 0.0.6; fixes part of bug 1297.
|
|
|
|
|
- Improve hidden service robustness: When we find that we have
|
|
|
|
|
extended a hidden service's introduction circuit to a relay not
|
|
|
|
|
listed as an introduction point in the HS descriptor we currently
|
|
|
|
|
have, retry with an introduction point from the current
|
|
|
|
|
descriptor. Previously we would just give up. Fixes bugs 1024 and
|
|
|
|
|
1930; bugfix on 0.2.0.10-alpha.
|
|
|
|
|
- Directory authorities now use data collected from their own
|
|
|
|
|
uptime observations when choosing whether to assign the HSDir flag
|
|
|
|
|
to relays, instead of trusting the uptime value the relay reports in
|
|
|
|
|
its descriptor. This change helps prevent an attack where a small
|
|
|
|
|
set of nodes with frequently-changing identity keys can blackhole
|
|
|
|
|
a hidden service. (Only authorities need upgrade; others will be
|
|
|
|
|
fine once they do.) Bugfix on 0.2.0.10-alpha; fixes bug 2709.
|
|
|
|
|
- Stop assigning the HSDir flag to relays that disable their
|
|
|
|
|
DirPort (and thus will refuse to answer directory requests). This
|
|
|
|
|
fix should dramatically improve the reachability of hidden services:
|
|
|
|
|
hidden services and hidden service clients pick six HSDir relays
|
|
|
|
|
to store and retrieve the hidden service descriptor, and currently
|
|
|
|
|
about half of the HSDir relays will refuse to work. Bugfix on
|
|
|
|
|
0.2.0.10-alpha; fixes part of bug 1693.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (misc):
|
|
|
|
|
- Clients now stop trying to use an exit node associated with a given
|
|
|
|
|
destination by TrackHostExits if they fail to reach that exit node.
|
|
|
|
|
Fixes bug 2999. Bugfix on 0.2.0.20-rc.
|
|
|
|
|
- Fix a regression that caused Tor to rebind its ports if it receives
|
|
|
|
|
SIGHUP while hibernating. Bugfix in 0.1.1.6-alpha; closes bug 919.
|
|
|
|
|
- Remove an extra pair of quotation marks around the error
|
|
|
|
|
message in control-port STATUS_GENERAL BUG events. Bugfix on
|
|
|
|
|
0.1.2.6-alpha; fixes bug 3732.
|
|
|
|
|
|
|
|
|
|
o Minor features (relays):
|
|
|
|
|
- Ensure that no empty [dirreq-](read|write)-history lines are added
|
|
|
|
|
to an extrainfo document. Implements ticket 2497.
|
|
|
|
|
- When bandwidth accounting is enabled, be more generous with how
|
|
|
|
|
much bandwidth we'll use up before entering "soft hibernation".
|
|
|
|
|
Previously, we'd refuse new connections and circuits once we'd
|
|
|
|
|
used up 95% of our allotment. Now, we use up 95% of our allotment,
|
|
|
|
|
AND make sure that we have no more than 500MB (or 3 hours of
|
|
|
|
|
expected traffic, whichever is lower) remaining before we enter
|
|
|
|
|
soft hibernation.
|
|
|
|
|
- Relays now log the reason for publishing a new relay descriptor,
|
|
|
|
|
so we have a better chance of hunting down instances of bug 1810.
|
|
|
|
|
Resolves ticket 3252.
|
|
|
|
|
- Log a little more clearly about the times at which we're no longer
|
|
|
|
|
accepting new connections (e.g. due to hibernating). Resolves
|
|
|
|
|
bug 2181.
|
|
|
|
|
- When AllowSingleHopExits is set, print a warning to explain to the
|
|
|
|
|
relay operator why most clients are avoiding her relay.
|
|
|
|
|
- Send END_STREAM_REASON_NOROUTE in response to EHOSTUNREACH errors.
|
|
|
|
|
Clients before 0.2.1.27 didn't handle NOROUTE correctly, but such
|
|
|
|
|
clients are already deprecated because of security bugs.
|
|
|
|
|
|
|
|
|
|
o Minor features (network statistics):
|
|
|
|
|
- Directory mirrors that set "DirReqStatistics 1" write statistics
|
|
|
|
|
about directory requests to disk every 24 hours. As compared to the
|
|
|
|
|
"--enable-geoip-stats" ./configure flag in 0.2.1.x, there are a few
|
|
|
|
|
improvements: 1) stats are written to disk exactly every 24 hours;
|
|
|
|
|
2) estimated shares of v2 and v3 requests are determined as mean
|
|
|
|
|
values, not at the end of a measurement period; 3) unresolved
|
|
|
|
|
requests are listed with country code '??'; 4) directories also
|
|
|
|
|
measure download times.
|
|
|
|
|
- Exit nodes that set "ExitPortStatistics 1" write statistics on the
|
|
|
|
|
number of exit streams and transferred bytes per port to disk every
|
|
|
|
|
24 hours.
|
|
|
|
|
- Relays that set "CellStatistics 1" write statistics on how long
|
|
|
|
|
cells spend in their circuit queues to disk every 24 hours.
|
|
|
|
|
- Entry nodes that set "EntryStatistics 1" write statistics on the
|
|
|
|
|
rough number and origins of connecting clients to disk every 24
|
|
|
|
|
hours.
|
|
|
|
|
- Relays that write any of the above statistics to disk and set
|
|
|
|
|
"ExtraInfoStatistics 1" include the past 24 hours of statistics in
|
|
|
|
|
their extra-info documents. Implements proposal 166.
|
|
|
|
|
|
|
|
|
|
o Minor features (GeoIP and statistics):
|
|
|
|
|
- Provide a log message stating which geoip file we're parsing
|
|
|
|
|
instead of just stating that we're parsing the geoip file.
|
|
|
|
|
Implements ticket 2432.
|
|
|
|
|
- Make sure every relay writes a state file at least every 12 hours.
|
|
|
|
|
Previously, a relay could go for weeks without writing its state
|
|
|
|
|
file, and on a crash could lose its bandwidth history, capacity
|
|
|
|
|
estimates, client country statistics, and so on. Addresses bug 3012.
|
|
|
|
|
- Relays report the number of bytes spent on answering directory
|
|
|
|
|
requests in extra-info descriptors similar to {read,write}-history.
|
|
|
|
|
Implements enhancement 1790.
|
|
|
|
|
- Report only the top 10 ports in exit-port stats in order not to
|
|
|
|
|
exceed the maximum extra-info descriptor length of 50 KB. Implements
|
|
|
|
|
task 2196.
|
|
|
|
|
- If writing the state file to disk fails, wait up to an hour before
|
|
|
|
|
retrying again, rather than trying again each second. Fixes bug
|
|
|
|
|
2346; bugfix on Tor 0.1.1.3-alpha.
|
|
|
|
|
- Delay geoip stats collection by bridges for 6 hours, not 2 hours,
|
|
|
|
|
when we switch from being a public relay to a bridge. Otherwise
|
|
|
|
|
there will still be clients that see the relay in their consensus,
|
|
|
|
|
and the stats will end up wrong. Bugfix on 0.2.1.15-rc; fixes
|
|
|
|
|
bug 932.
|
|
|
|
|
- Update to the August 2 2011 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
o Minor features (clients):
|
|
|
|
|
- When expiring circuits, use microsecond timers rather than
|
|
|
|
|
one-second timers. This can avoid an unpleasant situation where a
|
|
|
|
|
circuit is launched near the end of one second and expired right
|
|
|
|
|
near the beginning of the next, and prevent fluctuations in circuit
|
|
|
|
|
timeout values.
|
|
|
|
|
- If we've configured EntryNodes and our network goes away and/or all
|
|
|
|
|
our entrynodes get marked down, optimistically retry them all when
|
|
|
|
|
a new socks application request appears. Fixes bug 1882.
|
|
|
|
|
- Always perform router selections using weighted relay bandwidth,
|
|
|
|
|
even if we don't need a high capacity circuit at the time. Non-fast
|
|
|
|
|
circuits now only differ from fast ones in that they can use relays
|
|
|
|
|
not marked with the Fast flag. This "feature" could turn out to
|
|
|
|
|
be a horrible bug; we should investigate more before it goes into
|
|
|
|
|
a stable release.
|
|
|
|
|
- When we run out of directory information such that we can't build
|
|
|
|
|
circuits, but then get enough that we can build circuits, log when
|
|
|
|
|
we actually construct a circuit, so the user has a better chance of
|
|
|
|
|
knowing what's going on. Fixes bug 1362.
|
|
|
|
|
- Log SSL state transitions at debug level during handshake, and
|
|
|
|
|
include SSL states in error messages. This may help debug future
|
|
|
|
|
SSL handshake issues.
|
|
|
|
|
|
|
|
|
|
o Minor features (directory authorities):
|
|
|
|
|
- When a router changes IP address or port, authorities now launch
|
|
|
|
|
a new reachability test for it. Implements ticket 1899.
|
|
|
|
|
- Directory authorities now reject relays running any versions of
|
|
|
|
|
Tor between 0.2.1.3-alpha and 0.2.1.18 inclusive; they have
|
|
|
|
|
known bugs that keep RELAY_EARLY cells from working on rendezvous
|
|
|
|
|
circuits. Followup to fix for bug 2081.
|
|
|
|
|
- Directory authorities now reject relays running any version of Tor
|
|
|
|
|
older than 0.2.0.26-rc. That version is the earliest that fetches
|
|
|
|
|
current directory information correctly. Fixes bug 2156.
|
|
|
|
|
- Directory authorities now do an immediate reachability check as soon
|
|
|
|
|
as they hear about a new relay. This change should slightly reduce
|
|
|
|
|
the time between setting up a relay and getting listed as running
|
|
|
|
|
in the consensus. It should also improve the time between setting
|
|
|
|
|
up a bridge and seeing use by bridge users.
|
|
|
|
|
- Directory authorities no longer launch a TLS connection to every
|
|
|
|
|
relay as they startup. Now that we have 2k+ descriptors cached,
|
|
|
|
|
the resulting network hiccup is becoming a burden. Besides,
|
|
|
|
|
authorities already avoid voting about Running for the first half
|
|
|
|
|
hour of their uptime.
|
|
|
|
|
- Directory authorities now log the source of a rejected POSTed v3
|
|
|
|
|
networkstatus vote, so we can track failures better.
|
|
|
|
|
- Backport code from 0.2.3.x that allows directory authorities to
|
|
|
|
|
clean their microdescriptor caches. Needed to resolve bug 2230.
|
|
|
|
|
|
|
|
|
|
o Minor features (hidden services):
|
|
|
|
|
- Use computed circuit-build timeouts to decide when to launch
|
|
|
|
|
parallel introduction circuits for hidden services. (Previously,
|
|
|
|
|
we would retry after 15 seconds.)
|
|
|
|
|
- Don't allow v0 hidden service authorities to act as clients.
|
|
|
|
|
Required by fix for bug 3000.
|
|
|
|
|
- Ignore SIGNAL NEWNYM commands on relay-only Tor instances. Required
|
|
|
|
|
by fix for bug 3000.
|
|
|
|
|
- Make hidden services work better in private Tor networks by not
|
|
|
|
|
requiring any uptime to join the hidden service descriptor
|
|
|
|
|
DHT. Implements ticket 2088.
|
|
|
|
|
- Log (at info level) when purging pieces of hidden-service-client
|
|
|
|
|
state because of SIGNAL NEWNYM.
|
|
|
|
|
|
|
|
|
|
o Minor features (controller interface):
|
|
|
|
|
- New "GETINFO net/listeners/(type)" controller command to return
|
|
|
|
|
a list of addresses and ports that are bound for listeners for a
|
|
|
|
|
given connection type. This is useful when the user has configured
|
|
|
|
|
"SocksPort auto" and the controller needs to know which port got
|
|
|
|
|
chosen. Resolves another part of ticket 3076.
|
|
|
|
|
- Have the controller interface give a more useful message than
|
|
|
|
|
"Internal Error" in response to failed GETINFO requests.
|
|
|
|
|
- Add a TIMEOUT_RATE keyword to the BUILDTIMEOUT_SET control port
|
|
|
|
|
event, to give information on the current rate of circuit timeouts
|
|
|
|
|
over our stored history.
|
|
|
|
|
- The 'EXTENDCIRCUIT' control port command can now be used with
|
|
|
|
|
a circ id of 0 and no path. This feature will cause Tor to build
|
|
|
|
|
a new 'fast' general purpose circuit using its own path selection
|
|
|
|
|
algorithms.
|
|
|
|
|
- Added a BUILDTIMEOUT_SET controller event to describe changes
|
|
|
|
|
to the circuit build timeout.
|
|
|
|
|
- New controller command "getinfo config-text". It returns the
|
|
|
|
|
contents that Tor would write if you send it a SAVECONF command,
|
|
|
|
|
so the controller can write the file to disk itself.
|
|
|
|
|
|
|
|
|
|
o Minor features (controller protocol):
|
|
|
|
|
- Add a new ControlSocketsGroupWritable configuration option: when
|
|
|
|
|
it is turned on, ControlSockets are group-writeable by the default
|
|
|
|
|
group of the current user. Patch by Jérémy Bobbio; implements
|
|
|
|
|
ticket 2972.
|
|
|
|
|
- Tor now refuses to create a ControlSocket in a directory that is
|
|
|
|
|
world-readable (or group-readable if ControlSocketsGroupWritable
|
|
|
|
|
is 0). This is necessary because some operating systems do not
|
|
|
|
|
enforce permissions on an AF_UNIX sockets. Permissions on the
|
|
|
|
|
directory holding the socket, however, seems to work everywhere.
|
|
|
|
|
- Warn when CookieAuthFileGroupReadable is set but CookieAuthFile is
|
|
|
|
|
not. This would lead to a cookie that is still not group readable.
|
|
|
|
|
Closes bug 1843. Suggested by katmagic.
|
|
|
|
|
- Future-proof the controller protocol a bit by ignoring keyword
|
|
|
|
|
arguments we do not recognize.
|
|
|
|
|
|
|
|
|
|
o Minor features (more useful logging):
|
|
|
|
|
- Revise most log messages that refer to nodes by nickname to
|
|
|
|
|
instead use the "$key=nickname at address" format. This should be
|
|
|
|
|
more useful, especially since nicknames are less and less likely
|
|
|
|
|
to be unique. Resolves ticket 3045.
|
|
|
|
|
- When an HTTPS proxy reports "403 Forbidden", we now explain
|
|
|
|
|
what it means rather than calling it an unexpected status code.
|
|
|
|
|
Closes bug 2503. Patch from Michael Yakubovich.
|
|
|
|
|
- Rate-limit a warning about failures to download v2 networkstatus
|
|
|
|
|
documents. Resolves part of bug 1352.
|
|
|
|
|
- Rate-limit the "your application is giving Tor only an IP address"
|
|
|
|
|
warning. Addresses bug 2000; bugfix on 0.0.8pre2.
|
|
|
|
|
- Rate-limit "Failed to hand off onionskin" warnings.
|
|
|
|
|
- When logging a rate-limited warning, we now mention how many messages
|
|
|
|
|
got suppressed since the last warning.
|
|
|
|
|
- Make the formerly ugly "2 unknown, 7 missing key, 0 good, 0 bad,
|
|
|
|
|
2 no signature, 4 required" messages about consensus signatures
|
|
|
|
|
easier to read, and make sure they get logged at the same severity
|
|
|
|
|
as the messages explaining which keys are which. Fixes bug 1290.
|
|
|
|
|
- Don't warn when we have a consensus that we can't verify because
|
|
|
|
|
of missing certificates, unless those certificates are ones
|
|
|
|
|
that we have been trying and failing to download. Fixes bug 1145.
|
|
|
|
|
|
|
|
|
|
o Minor features (log domains):
|
|
|
|
|
- Add documentation for configuring logging at different severities in
|
|
|
|
|
different log domains. We've had this feature since 0.2.1.1-alpha,
|
|
|
|
|
but for some reason it never made it into the manpage. Fixes
|
|
|
|
|
bug 2215.
|
|
|
|
|
- Make it simpler to specify "All log domains except for A and B".
|
|
|
|
|
Previously you needed to say "[*,~A,~B]". Now you can just say
|
|
|
|
|
"[~A,~B]".
|
|
|
|
|
- Add a "LogMessageDomains 1" option to include the domains of log
|
|
|
|
|
messages along with the messages. Without this, there's no way
|
|
|
|
|
to use log domains without reading the source or doing a lot
|
|
|
|
|
of guessing.
|
|
|
|
|
- Add a new "Handshake" log domain for activities that happen
|
|
|
|
|
during the TLS handshake.
|
|
|
|
|
|
|
|
|
|
o Minor features (build process):
|
|
|
|
|
- Make compilation with clang possible when using
|
|
|
|
|
"--enable-gcc-warnings" by removing two warning options that clang
|
|
|
|
|
hasn't implemented yet and by fixing a few warnings. Resolves
|
|
|
|
|
ticket 2696.
|
|
|
|
|
- Detect platforms that brokenly use a signed size_t, and refuse to
|
|
|
|
|
build there. Found and analyzed by doorss and rransom.
|
|
|
|
|
- Fix a bunch of compile warnings revealed by mingw with gcc 4.5.
|
|
|
|
|
Resolves bug 2314.
|
|
|
|
|
- Add support for statically linking zlib by specifying
|
|
|
|
|
"--enable-static-zlib", to go with our support for statically
|
|
|
|
|
linking openssl and libevent. Resolves bug 1358.
|
|
|
|
|
- Instead of adding the svn revision to the Tor version string, report
|
|
|
|
|
the git commit (when we're building from a git checkout).
|
|
|
|
|
- Rename the "log.h" header to "torlog.h" so as to conflict with fewer
|
|
|
|
|
system headers.
|
|
|
|
|
- New --digests command-line switch to output the digests of the
|
|
|
|
|
source files Tor was built with.
|
|
|
|
|
- Generate our manpage and HTML documentation using Asciidoc. This
|
|
|
|
|
change should make it easier to maintain the documentation, and
|
|
|
|
|
produce nicer HTML. The build process fails if asciidoc cannot
|
|
|
|
|
be found and building with asciidoc isn't disabled (via the
|
|
|
|
|
"--disable-asciidoc" argument to ./configure. Skipping the manpage
|
|
|
|
|
speeds up the build considerably.
|
|
|
|
|
|
|
|
|
|
o Minor features (options / torrc):
|
|
|
|
|
- Warn when the same option is provided more than once in a torrc
|
|
|
|
|
file, on the command line, or in a single SETCONF statement, and
|
|
|
|
|
the option is one that only accepts a single line. Closes bug 1384.
|
|
|
|
|
- Warn when the user configures two HiddenServiceDir lines that point
|
|
|
|
|
to the same directory. Bugfix on 0.0.6 (the version introducing
|
|
|
|
|
HiddenServiceDir); fixes bug 3289.
|
|
|
|
|
- Add new "perconnbwrate" and "perconnbwburst" consensus params to
|
|
|
|
|
do individual connection-level rate limiting of clients. The torrc
|
|
|
|
|
config options with the same names trump the consensus params, if
|
|
|
|
|
both are present. Replaces the old "bwconnrate" and "bwconnburst"
|
|
|
|
|
consensus params which were broken from 0.2.2.7-alpha through
|
|
|
|
|
0.2.2.14-alpha. Closes bug 1947.
|
|
|
|
|
- New config option "WarnUnsafeSocks 0" disables the warning that
|
|
|
|
|
occurs whenever Tor receives a socks handshake using a version of
|
|
|
|
|
the socks protocol that can only provide an IP address (rather
|
|
|
|
|
than a hostname). Setups that do DNS locally over Tor are fine,
|
|
|
|
|
and we shouldn't spam the logs in that case.
|
|
|
|
|
- New config option "CircuitStreamTimeout" to override our internal
|
|
|
|
|
timeout schedule for how many seconds until we detach a stream from
|
|
|
|
|
a circuit and try a new circuit. If your network is particularly
|
|
|
|
|
slow, you might want to set this to a number like 60.
|
|
|
|
|
- New options for SafeLogging to allow scrubbing only log messages
|
|
|
|
|
generated while acting as a relay. Specify "SafeLogging relay" if
|
|
|
|
|
you want to ensure that only messages known to originate from
|
|
|
|
|
client use of the Tor process will be logged unsafely.
|
|
|
|
|
- Time and memory units in the configuration file can now be set to
|
|
|
|
|
fractional units. For example, "2.5 GB" is now a valid value for
|
|
|
|
|
AccountingMax.
|
|
|
|
|
- Support line continuations in the torrc config file. If a line
|
|
|
|
|
ends with a single backslash character, the newline is ignored, and
|
|
|
|
|
the configuration value is treated as continuing on the next line.
|
|
|
|
|
Resolves bug 1929.
|
|
|
|
|
|
|
|
|
|
o Minor features (unit tests):
|
|
|
|
|
- Revise our unit tests to use the "tinytest" framework, so we
|
|
|
|
|
can run tests in their own processes, have smarter setup/teardown
|
|
|
|
|
code, and so on. The unit test code has moved to its own
|
|
|
|
|
subdirectory, and has been split into multiple modules.
|
|
|
|
|
- Add a unit test for cross-platform directory-listing code.
|
|
|
|
|
- Add some forgotten return value checks during unit tests. Found
|
|
|
|
|
by coverity.
|
|
|
|
|
- Use GetTempDir to find the proper temporary directory location on
|
|
|
|
|
Windows when generating temporary files for the unit tests. Patch
|
|
|
|
|
by Gisle Vanem.
|
|
|
|
|
|
|
|
|
|
o Minor features (misc):
|
|
|
|
|
- The "torify" script now uses torsocks where available.
|
|
|
|
|
- Make Libevent log messages get delivered to controllers later,
|
|
|
|
|
and not from inside the Libevent log handler. This prevents unsafe
|
|
|
|
|
reentrant Libevent calls while still letting the log messages
|
|
|
|
|
get through.
|
|
|
|
|
- Certain Tor clients (such as those behind check.torproject.org) may
|
|
|
|
|
want to fetch the consensus in an extra early manner. To enable this
|
|
|
|
|
a user may now set FetchDirInfoExtraEarly to 1. This also depends on
|
|
|
|
|
setting FetchDirInfoEarly to 1. Previous behavior will stay the same
|
|
|
|
|
as only certain clients who must have this information sooner should
|
|
|
|
|
set this option.
|
|
|
|
|
- Expand homedirs passed to tor-checkkey. This should silence a
|
|
|
|
|
coverity complaint about passing a user-supplied string into
|
|
|
|
|
open() without checking it.
|
|
|
|
|
- Make sure to disable DirPort if running as a bridge. DirPorts aren't
|
|
|
|
|
used on bridges, and it makes bridge scanning somewhat easier.
|
|
|
|
|
- Create the /var/run/tor directory on startup on OpenSUSE if it is
|
|
|
|
|
not already created. Patch from Andreas Stieger. Fixes bug 2573.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (relays):
|
|
|
|
|
- When a relay decides that its DNS is too broken for it to serve
|
|
|
|
|
as an exit server, it advertised itself as a non-exit, but
|
|
|
|
|
continued to act as an exit. This could create accidental
|
|
|
|
|
partitioning opportunities for users. Instead, if a relay is
|
|
|
|
|
going to advertise reject *:* as its exit policy, it should
|
|
|
|
|
really act with exit policy "reject *:*". Fixes bug 2366.
|
|
|
|
|
Bugfix on Tor 0.1.2.5-alpha. Bugfix by user "postman" on trac.
|
|
|
|
|
- Publish a router descriptor even if generating an extra-info
|
|
|
|
|
descriptor fails. Previously we would not publish a router
|
|
|
|
|
descriptor without an extra-info descriptor; this can cause fast
|
|
|
|
|
exit relays collecting exit-port statistics to drop from the
|
|
|
|
|
consensus. Bugfix on 0.1.2.9-rc; fixes bug 2195.
|
|
|
|
|
- When we're trying to guess whether we know our IP address as
|
|
|
|
|
a relay, we would log various ways that we failed to guess
|
|
|
|
|
our address, but never log that we ended up guessing it
|
|
|
|
|
successfully. Now add a log line to help confused and anxious
|
|
|
|
|
relay operators. Bugfix on 0.1.2.1-alpha; fixes bug 1534.
|
|
|
|
|
- For bandwidth accounting, calculate our expected bandwidth rate
|
|
|
|
|
based on the time during which we were active and not in
|
|
|
|
|
soft-hibernation during the last interval. Previously, we were
|
|
|
|
|
also considering the time spent in soft-hibernation. If this
|
|
|
|
|
was a long time, we would wind up underestimating our bandwidth
|
|
|
|
|
by a lot, and skewing our wakeup time towards the start of the
|
|
|
|
|
accounting interval. Fixes bug 1789. Bugfix on 0.0.9pre5.
|
|
|
|
|
- Demote a confusing TLS warning that relay operators might get when
|
|
|
|
|
someone tries to talk to their ORPort. It is not the operator's
|
|
|
|
|
fault, nor can they do anything about it. Fixes bug 1364; bugfix
|
|
|
|
|
on 0.2.0.14-alpha.
|
|
|
|
|
- Change "Application request when we're believed to be offline."
|
|
|
|
|
notice to "Application request when we haven't used client
|
|
|
|
|
functionality lately.", to clarify that it's not an error. Bugfix
|
|
|
|
|
on 0.0.9.3; fixes bug 1222.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (bridges):
|
|
|
|
|
- When a client starts or stops using bridges, never use a circuit
|
|
|
|
|
that was built before the configuration change. This behavior could
|
|
|
|
|
put at risk a user who uses bridges to ensure that her traffic
|
|
|
|
|
only goes to the chosen addresses. Bugfix on 0.2.0.3-alpha; fixes
|
|
|
|
|
bug 3200.
|
|
|
|
|
- Do not reset the bridge descriptor download status every time we
|
|
|
|
|
re-parse our configuration or get a configuration change. Fixes
|
|
|
|
|
bug 3019; bugfix on 0.2.0.3-alpha.
|
|
|
|
|
- Users couldn't configure a regular relay to be their bridge. It
|
|
|
|
|
didn't work because when Tor fetched the bridge descriptor, it found
|
|
|
|
|
that it already had it, and didn't realize that the purpose of the
|
|
|
|
|
descriptor had changed. Now we replace routers with a purpose other
|
|
|
|
|
than bridge with bridge descriptors when fetching them. Bugfix on
|
|
|
|
|
0.1.1.9-alpha. Fixes bug 1776.
|
|
|
|
|
- In the special case where you configure a public exit relay as your
|
|
|
|
|
bridge, Tor would be willing to use that exit relay as the last
|
|
|
|
|
hop in your circuit as well. Now we fail that circuit instead.
|
|
|
|
|
Bugfix on 0.2.0.12-alpha. Fixes bug 2403. Reported by "piebeer".
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (clients):
|
|
|
|
|
- We now ask the other side of a stream (the client or the exit)
|
|
|
|
|
for more data on that stream when the amount of queued data on
|
|
|
|
|
that stream dips low enough. Previously, we wouldn't ask the
|
|
|
|
|
other side for more data until either it sent us more data (which
|
|
|
|
|
it wasn't supposed to do if it had exhausted its window!) or we
|
|
|
|
|
had completely flushed all our queued data. This flow control fix
|
|
|
|
|
should improve throughput. Fixes bug 2756; bugfix on the earliest
|
|
|
|
|
released versions of Tor (svn commit r152).
|
|
|
|
|
- When a client finds that an origin circuit has run out of 16-bit
|
|
|
|
|
stream IDs, we now mark it as unusable for new streams. Previously,
|
|
|
|
|
we would try to close the entire circuit. Bugfix on 0.0.6.
|
|
|
|
|
- Make it explicit that we don't cannibalize one-hop circuits. This
|
|
|
|
|
happens in the wild, but doesn't turn out to be a problem because
|
|
|
|
|
we fortunately don't use those circuits. Many thanks to outofwords
|
|
|
|
|
for the initial analysis and to swissknife who confirmed that
|
|
|
|
|
two-hop circuits are actually created.
|
|
|
|
|
- Resolve an edge case in path weighting that could make us misweight
|
|
|
|
|
our relay selection. Fixes bug 1203; bugfix on 0.0.8rc1.
|
|
|
|
|
- Make the DNSPort option work with libevent 2.x. Don't alter the
|
|
|
|
|
behaviour for libevent 1.x. Fixes bug 1143. Found by SwissTorExit.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (directory authorities):
|
|
|
|
|
- Make directory authorities more accurate at recording when
|
|
|
|
|
relays that have failed several reachability tests became
|
|
|
|
|
unreachable, so we can provide more accuracy at assigning Stable,
|
|
|
|
|
Guard, HSDir, etc flags. Bugfix on 0.2.0.6-alpha. Resolves bug 2716.
|
|
|
|
|
- Directory authorities are now more robust to hops back in time
|
|
|
|
|
when calculating router stability. Previously, if a run of uptime
|
|
|
|
|
or downtime appeared to be negative, the calculation could give
|
|
|
|
|
incorrect results. Bugfix on 0.2.0.6-alpha; noticed when fixing
|
|
|
|
|
bug 1035.
|
|
|
|
|
- Directory authorities will now attempt to download consensuses
|
|
|
|
|
if their own efforts to make a live consensus have failed. This
|
|
|
|
|
change means authorities that restart will fetch a valid
|
|
|
|
|
consensus, and it means authorities that didn't agree with the
|
|
|
|
|
current consensus will still fetch and serve it if it has enough
|
|
|
|
|
signatures. Bugfix on 0.2.0.9-alpha; fixes bug 1300.
|
|
|
|
|
- Never vote for a server as "Running" if we have a descriptor for
|
|
|
|
|
it claiming to be hibernating, and that descriptor was published
|
|
|
|
|
more recently than our last contact with the server. Bugfix on
|
|
|
|
|
0.2.0.3-alpha; fixes bug 911.
|
|
|
|
|
- Directory authorities no longer change their opinion of, or vote on,
|
|
|
|
|
whether a router is Running, unless they have themselves been
|
|
|
|
|
online long enough to have some idea. Bugfix on 0.2.0.6-alpha.
|
|
|
|
|
Fixes bug 1023.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (hidden services):
|
|
|
|
|
- Log malformed requests for rendezvous descriptors as protocol
|
|
|
|
|
warnings, not warnings. Also, use a more informative log message
|
|
|
|
|
in case someone sees it at log level warning without prior
|
|
|
|
|
info-level messages. Fixes bug 2748; bugfix on 0.2.0.10-alpha.
|
|
|
|
|
- Accept hidden service descriptors if we think we might be a hidden
|
|
|
|
|
service directory, regardless of what our consensus says. This
|
|
|
|
|
helps robustness, since clients and hidden services can sometimes
|
|
|
|
|
have a more up-to-date view of the network consensus than we do,
|
|
|
|
|
and if they think that the directory authorities list us a HSDir,
|
|
|
|
|
we might actually be one. Related to bug 2732; bugfix on
|
|
|
|
|
0.2.0.10-alpha.
|
|
|
|
|
- Correct the warning displayed when a rendezvous descriptor exceeds
|
|
|
|
|
the maximum size. Fixes bug 2750; bugfix on 0.2.1.5-alpha. Found by
|
|
|
|
|
John Brooks.
|
|
|
|
|
- Clients and hidden services now use HSDir-flagged relays for hidden
|
|
|
|
|
service descriptor downloads and uploads even if the relays have no
|
|
|
|
|
DirPort set and the client has disabled TunnelDirConns. This will
|
|
|
|
|
eventually allow us to give the HSDir flag to relays with no
|
|
|
|
|
DirPort. Fixes bug 2722; bugfix on 0.2.1.6-alpha.
|
|
|
|
|
- Only limit the lengths of single HS descriptors, even when multiple
|
|
|
|
|
HS descriptors are published to an HSDir relay in a single POST
|
|
|
|
|
operation. Fixes bug 2948; bugfix on 0.2.1.5-alpha. Found by hsdir.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (controllers):
|
|
|
|
|
- Allow GETINFO fingerprint to return a fingerprint even when
|
|
|
|
|
we have not yet built a router descriptor. Fixes bug 3577;
|
|
|
|
|
bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Send a SUCCEEDED stream event to the controller when a reverse
|
|
|
|
|
resolve succeeded. Fixes bug 3536; bugfix on 0.0.8pre1. Issue
|
|
|
|
|
discovered by katmagic.
|
|
|
|
|
- Remove a trailing asterisk from "exit-policy/default" in the
|
|
|
|
|
output of the control port command "GETINFO info/names". Bugfix
|
|
|
|
|
on 0.1.2.5-alpha.
|
|
|
|
|
- Make the SIGNAL DUMP controller command work on FreeBSD. Fixes bug
|
|
|
|
|
2917. Bugfix on 0.1.1.1-alpha.
|
|
|
|
|
- When we restart our relay, we might get a successful connection
|
|
|
|
|
from the outside before we've started our reachability tests,
|
|
|
|
|
triggering a warning: "ORPort found reachable, but I have no
|
|
|
|
|
routerinfo yet. Failing to inform controller of success." This
|
|
|
|
|
bug was harmless unless Tor is running under a controller
|
|
|
|
|
like Vidalia, in which case the controller would never get a
|
|
|
|
|
REACHABILITY_SUCCEEDED status event. Bugfix on 0.1.2.6-alpha;
|
|
|
|
|
fixes bug 1172.
|
|
|
|
|
- When a controller changes TrackHostExits, remove mappings for
|
|
|
|
|
hosts that should no longer have their exits tracked. Bugfix on
|
|
|
|
|
0.1.0.1-rc.
|
|
|
|
|
- When a controller changes VirtualAddrNetwork, remove any mappings
|
|
|
|
|
for hosts that were automapped to the old network. Bugfix on
|
|
|
|
|
0.1.1.19-rc.
|
|
|
|
|
- When a controller changes one of the AutomapHosts* options, remove
|
|
|
|
|
any mappings for hosts that should no longer be automapped. Bugfix
|
|
|
|
|
on 0.2.0.1-alpha.
|
|
|
|
|
- Fix an off-by-one error in calculating some controller command
|
|
|
|
|
argument lengths. Fortunately, this mistake is harmless since
|
|
|
|
|
the controller code does redundant NUL termination too. Found by
|
|
|
|
|
boboper. Bugfix on 0.1.1.1-alpha.
|
|
|
|
|
- Fix a bug in the controller interface where "GETINFO ns/asdaskljkl"
|
|
|
|
|
would return "551 Internal error" rather than "552 Unrecognized key
|
|
|
|
|
ns/asdaskljkl". Bugfix on 0.1.2.3-alpha.
|
|
|
|
|
- Don't spam the controller with events when we have no file
|
|
|
|
|
descriptors available. Bugfix on 0.2.1.5-alpha. (Rate-limiting
|
|
|
|
|
for log messages was already solved from bug 748.)
|
|
|
|
|
- Emit a GUARD DROPPED controller event for a case we missed.
|
|
|
|
|
- Ensure DNS requests launched by "RESOLVE" commands from the
|
|
|
|
|
controller respect the __LeaveStreamsUnattached setconf options. The
|
|
|
|
|
same goes for requests launched via DNSPort or transparent
|
|
|
|
|
proxying. Bugfix on 0.2.0.1-alpha; fixes bug 1525.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (config options):
|
|
|
|
|
- Tor used to limit HttpProxyAuthenticator values to 48 characters.
|
|
|
|
|
Change the limit to 512 characters by removing base64 newlines.
|
|
|
|
|
Fixes bug 2752. Fix by Michael Yakubovich.
|
|
|
|
|
- Complain if PublishServerDescriptor is given multiple arguments that
|
|
|
|
|
include 0 or 1. This configuration will be rejected in the future.
|
|
|
|
|
Bugfix on 0.2.0.1-alpha; closes bug 1107.
|
|
|
|
|
- Disallow BridgeRelay 1 and ORPort 0 at once in the configuration.
|
|
|
|
|
Bugfix on 0.2.0.13-alpha; closes bug 928.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (log subsystem fixes):
|
|
|
|
|
- When unable to format an address as a string, report its value
|
|
|
|
|
as "???" rather than reusing the last formatted address. Bugfix
|
|
|
|
|
on 0.2.1.5-alpha.
|
|
|
|
|
- Be more consistent in our treatment of file system paths. "~" should
|
|
|
|
|
get expanded to the user's home directory in the Log config option.
|
|
|
|
|
Fixes bug 2971; bugfix on 0.2.0.1-alpha, which introduced the
|
|
|
|
|
feature for the -f and --DataDirectory options.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (memory management):
|
|
|
|
|
- Don't stack-allocate the list of supplementary GIDs when we're
|
|
|
|
|
about to log them. Stack-allocating NGROUPS_MAX gid_t elements
|
|
|
|
|
could take up to 256K, which is way too much stack. Found by
|
|
|
|
|
Coverity; CID #450. Bugfix on 0.2.1.7-alpha.
|
|
|
|
|
- Save a couple bytes in memory allocation every time we escape
|
|
|
|
|
certain characters in a string. Patch from Florian Zumbiehl.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (protocol correctness):
|
|
|
|
|
- When checking for 1024-bit keys, check for 1024 bits, not 128
|
|
|
|
|
bytes. This allows Tor to correctly discard keys of length 1017
|
|
|
|
|
through 1023. Bugfix on 0.0.9pre5.
|
|
|
|
|
- Require that introduction point keys and onion handshake keys
|
|
|
|
|
have a public exponent of 65537. Starts to fix bug 3207; bugfix
|
|
|
|
|
on 0.2.0.10-alpha.
|
|
|
|
|
- Handle SOCKS messages longer than 128 bytes long correctly, rather
|
|
|
|
|
than waiting forever for them to finish. Fixes bug 2330; bugfix
|
|
|
|
|
on 0.2.0.16-alpha. Found by doorss.
|
|
|
|
|
- Never relay a cell for a circuit we have already destroyed.
|
|
|
|
|
Between marking a circuit as closeable and finally closing it,
|
|
|
|
|
it may have been possible for a few queued cells to get relayed,
|
|
|
|
|
even though they would have been immediately dropped by the next
|
|
|
|
|
OR in the circuit. Fixes bug 1184; bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Never queue a cell for a circuit that's already been marked
|
|
|
|
|
for close.
|
|
|
|
|
- Fix a spec conformance issue: the network-status-version token
|
|
|
|
|
must be the first token in a v3 consensus or vote. Discovered by
|
|
|
|
|
"parakeep". Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
- A networkstatus vote must contain exactly one signature. Spec
|
|
|
|
|
conformance issue. Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
- When asked about a DNS record type we don't support via a
|
|
|
|
|
client DNSPort, reply with NOTIMPL rather than an empty
|
|
|
|
|
reply. Patch by intrigeri. Fixes bug 3369; bugfix on 2.0.1-alpha.
|
|
|
|
|
- Make more fields in the controller protocol case-insensitive, since
|
|
|
|
|
control-spec.txt said they were.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (log messages):
|
|
|
|
|
- Fix a log message that said "bits" while displaying a value in
|
|
|
|
|
bytes. Found by wanoskarnet. Fixes bug 3318; bugfix on
|
|
|
|
|
0.2.0.1-alpha.
|
|
|
|
|
- Downgrade "no current certificates known for authority" message from
|
|
|
|
|
Notice to Info. Fixes bug 2899; bugfix on 0.2.0.10-alpha.
|
|
|
|
|
- Correctly describe errors that occur when generating a TLS object.
|
|
|
|
|
Previously we would attribute them to a failure while generating a
|
|
|
|
|
TLS context. Patch by Robert Ransom. Bugfix on 0.1.0.4-rc; fixes
|
|
|
|
|
bug 1994.
|
|
|
|
|
- Fix an instance where a Tor directory mirror might accidentally
|
|
|
|
|
log the IP address of a misbehaving Tor client. Bugfix on
|
|
|
|
|
0.1.0.1-rc.
|
|
|
|
|
- Stop logging at severity 'warn' when some other Tor client tries
|
|
|
|
|
to establish a circuit with us using weak DH keys. It's a protocol
|
|
|
|
|
violation, but that doesn't mean ordinary users need to hear about
|
|
|
|
|
it. Fixes the bug part of bug 1114. Bugfix on 0.1.0.13.
|
|
|
|
|
- If your relay can't keep up with the number of incoming create
|
|
|
|
|
cells, it would log one warning per failure into your logs. Limit
|
|
|
|
|
warnings to 1 per minute. Bugfix on 0.0.2pre10; fixes bug 1042.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (build fixes):
|
|
|
|
|
- Fix warnings from GCC 4.6's "-Wunused-but-set-variable" option.
|
|
|
|
|
- When warning about missing zlib development packages during compile,
|
|
|
|
|
give the correct package names. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Fix warnings that newer versions of autoconf produce during
|
|
|
|
|
./autogen.sh. These warnings appear to be harmless in our case,
|
|
|
|
|
but they were extremely verbose. Fixes bug 2020.
|
|
|
|
|
- Squash a compile warning on OpenBSD. Reported by Tas; fixes
|
|
|
|
|
bug 1848.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (portability):
|
|
|
|
|
- Write several files in text mode, on OSes that distinguish text
|
|
|
|
|
mode from binary mode (namely, Windows). These files are:
|
|
|
|
|
'buffer-stats', 'dirreq-stats', and 'entry-stats' on relays
|
|
|
|
|
that collect those statistics; 'client_keys' and 'hostname' for
|
|
|
|
|
hidden services that use authentication; and (in the tor-gencert
|
|
|
|
|
utility) newly generated identity and signing keys. Previously,
|
|
|
|
|
we wouldn't specify text mode or binary mode, leading to an
|
|
|
|
|
assertion failure. Fixes bug 3607. Bugfix on 0.2.1.1-alpha (when
|
|
|
|
|
the DirRecordUsageByCountry option which would have triggered
|
|
|
|
|
the assertion failure was added), although this assertion failure
|
|
|
|
|
would have occurred in tor-gencert on Windows in 0.2.0.1-alpha.
|
|
|
|
|
- Selectively disable deprecation warnings on OS X because Lion
|
|
|
|
|
started deprecating the shipped copy of openssl. Fixes bug 3643.
|
|
|
|
|
- Use a wide type to hold sockets when built for 64-bit Windows.
|
|
|
|
|
Fixes bug 3270.
|
|
|
|
|
- Fix an issue that prevented static linking of libevent on
|
|
|
|
|
some platforms (notably Linux). Fixes bug 2698; bugfix on 0.2.1.23,
|
|
|
|
|
where we introduced the "--with-static-libevent" configure option.
|
|
|
|
|
- Fix a bug with our locking implementation on Windows that couldn't
|
|
|
|
|
correctly detect when a file was already locked. Fixes bug 2504,
|
|
|
|
|
bugfix on 0.2.1.6-alpha.
|
|
|
|
|
- Build correctly on OSX with zlib 1.2.4 and higher with all warnings
|
|
|
|
|
enabled.
|
|
|
|
|
- Fix IPv6-related connect() failures on some platforms (BSD, OS X).
|
|
|
|
|
Bugfix on 0.2.0.3-alpha; fixes first part of bug 2660. Patch by
|
|
|
|
|
"piebeer".
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (code correctness):
|
|
|
|
|
- Always NUL-terminate the sun_path field of a sockaddr_un before
|
|
|
|
|
passing it to the kernel. (Not a security issue: kernels are
|
|
|
|
|
smart enough to reject bad sockaddr_uns.) Found by Coverity;
|
|
|
|
|
CID #428. Bugfix on Tor 0.2.0.3-alpha.
|
|
|
|
|
- Make connection_printf_to_buf()'s behaviour sane. Its callers
|
|
|
|
|
expect it to emit a CRLF iff the format string ends with CRLF;
|
|
|
|
|
it actually emitted a CRLF iff (a) the format string ended with
|
|
|
|
|
CRLF or (b) the resulting string was over 1023 characters long or
|
|
|
|
|
(c) the format string did not end with CRLF *and* the resulting
|
|
|
|
|
string was 1021 characters long or longer. Bugfix on 0.1.1.9-alpha;
|
|
|
|
|
fixes part of bug 3407.
|
|
|
|
|
- Make send_control_event_impl()'s behaviour sane. Its callers
|
|
|
|
|
expect it to always emit a CRLF at the end of the string; it
|
|
|
|
|
might have emitted extra control characters as well. Bugfix on
|
|
|
|
|
0.1.1.9-alpha; fixes another part of bug 3407.
|
|
|
|
|
- Make crypto_rand_int() check the value of its input correctly.
|
|
|
|
|
Previously, it accepted values up to UINT_MAX, but could return a
|
|
|
|
|
negative number if given a value above INT_MAX+1. Found by George
|
|
|
|
|
Kadianakis. Fixes bug 3306; bugfix on 0.2.2pre14.
|
|
|
|
|
- Fix a potential null-pointer dereference while computing a
|
|
|
|
|
consensus. Bugfix on tor-0.2.0.3-alpha, found with the help of
|
|
|
|
|
clang's analyzer.
|
|
|
|
|
- If we fail to compute the identity digest of a v3 legacy keypair,
|
|
|
|
|
warn, and don't use a buffer-full of junk instead. Bugfix on
|
|
|
|
|
0.2.1.1-alpha; fixes bug 3106.
|
|
|
|
|
- Resolve an untriggerable issue in smartlist_string_num_isin(),
|
|
|
|
|
where if the function had ever in the future been used to check
|
|
|
|
|
for the presence of a too-large number, it would have given an
|
|
|
|
|
incorrect result. (Fortunately, we only used it for 16-bit
|
|
|
|
|
values.) Fixes bug 3175; bugfix on 0.1.0.1-rc.
|
|
|
|
|
- Be more careful about reporting the correct error from a failed
|
|
|
|
|
connect() system call. Under some circumstances, it was possible to
|
|
|
|
|
look at an incorrect value for errno when sending the end reason.
|
|
|
|
|
Bugfix on 0.1.0.1-rc.
|
|
|
|
|
- Correctly handle an "impossible" overflow cases in connection byte
|
|
|
|
|
counting, where we write or read more than 4GB on an edge connection
|
|
|
|
|
in a single second. Bugfix on 0.1.2.8-beta.
|
|
|
|
|
- Avoid a double mark-for-free warning when failing to attach a
|
|
|
|
|
transparent proxy connection. Bugfix on 0.1.2.1-alpha. Fixes
|
|
|
|
|
bug 2279.
|
|
|
|
|
- Correctly detect failure to allocate an OpenSSL BIO. Fixes bug 2378;
|
|
|
|
|
found by "cypherpunks". This bug was introduced before the first
|
|
|
|
|
Tor release, in svn commit r110.
|
|
|
|
|
- Fix a bug in bandwidth history state parsing that could have been
|
|
|
|
|
triggered if a future version of Tor ever changed the timing
|
|
|
|
|
granularity at which bandwidth history is measured. Bugfix on
|
|
|
|
|
Tor 0.1.1.11-alpha.
|
|
|
|
|
- Add assertions to check for overflow in arguments to
|
|
|
|
|
base32_encode() and base32_decode(); fix a signed-unsigned
|
|
|
|
|
comparison there too. These bugs are not actually reachable in Tor,
|
|
|
|
|
but it's good to prevent future errors too. Found by doorss.
|
|
|
|
|
- Avoid a bogus overlapped memcpy in tor_addr_copy(). Reported by
|
|
|
|
|
"memcpyfail".
|
|
|
|
|
- Set target port in get_interface_address6() correctly. Bugfix
|
|
|
|
|
on 0.1.1.4-alpha and 0.2.0.3-alpha; fixes second part of bug 2660.
|
|
|
|
|
- Fix an impossible-to-actually-trigger buffer overflow in relay
|
|
|
|
|
descriptor generation. Bugfix on 0.1.0.15.
|
|
|
|
|
- Fix numerous small code-flaws found by Coverity Scan Rung 3.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (code improvements):
|
|
|
|
|
- After we free an internal connection structure, overwrite it
|
|
|
|
|
with a different memory value than we use for overwriting a freed
|
|
|
|
|
internal circuit structure. Should help with debugging. Suggested
|
|
|
|
|
by bug 1055.
|
|
|
|
|
- If OpenSSL fails to make a duplicate of a private or public key, log
|
|
|
|
|
an error message and try to exit cleanly. May help with debugging
|
|
|
|
|
if bug 1209 ever remanifests.
|
|
|
|
|
- Some options used different conventions for uppercasing of acronyms
|
|
|
|
|
when comparing manpage and source. Fix those in favor of the
|
|
|
|
|
manpage, as it makes sense to capitalize acronyms.
|
|
|
|
|
- Take a first step towards making or.h smaller by splitting out
|
|
|
|
|
function definitions for all source files in src/or/. Leave
|
|
|
|
|
structures and defines in or.h for now.
|
|
|
|
|
- Remove a few dead assignments during router parsing. Found by
|
|
|
|
|
coverity.
|
|
|
|
|
- Don't use 1-bit wide signed bit fields. Found by coverity.
|
|
|
|
|
- Avoid signed/unsigned comparisons by making SIZE_T_CEILING unsigned.
|
|
|
|
|
None of the cases where we did this before were wrong, but by making
|
|
|
|
|
this change we avoid warnings. Fixes bug 2475; bugfix on 0.2.1.28.
|
|
|
|
|
- The memarea code now uses a sentinel value at the end of each area
|
|
|
|
|
to make sure nothing writes beyond the end of an area. This might
|
|
|
|
|
help debug some conceivable causes of bug 930.
|
|
|
|
|
- Always treat failure to allocate an RSA key as an unrecoverable
|
|
|
|
|
allocation error.
|
|
|
|
|
- Add some more defensive programming for architectures that can't
|
|
|
|
|
handle unaligned integer accesses. We don't know of any actual bugs
|
|
|
|
|
right now, but that's the best time to fix them. Fixes bug 1943.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (misc):
|
|
|
|
|
- Fix a rare bug in rend_fn unit tests: we would fail a test when
|
|
|
|
|
a randomly generated port is 0. Diagnosed by Matt Edman. Bugfix
|
|
|
|
|
on 0.2.0.10-alpha; fixes bug 1808.
|
|
|
|
|
- Where available, use Libevent 2.0's periodic timers so that our
|
|
|
|
|
once-per-second cleanup code gets called even more closely to
|
|
|
|
|
once per second than it would otherwise. Fixes bug 943.
|
|
|
|
|
- Ignore OutboundBindAddress when connecting to localhost.
|
|
|
|
|
Connections to localhost need to come _from_ localhost, or else
|
|
|
|
|
local servers (like DNS and outgoing HTTP/SOCKS proxies) will often
|
|
|
|
|
refuse to listen.
|
|
|
|
|
- Update our OpenSSL 0.9.8l fix so that it works with OpenSSL 0.9.8m
|
|
|
|
|
too.
|
|
|
|
|
- If any of the v3 certs we download are unparseable, we should
|
|
|
|
|
actually notice the failure so we don't retry indefinitely. Bugfix
|
|
|
|
|
on 0.2.0.x; reported by "rotator".
|
|
|
|
|
- When Tor fails to parse a descriptor of any kind, dump it to disk.
|
|
|
|
|
Might help diagnosing bug 1051.
|
|
|
|
|
- Make our 'torify' script more portable; if we have only one of
|
|
|
|
|
'torsocks' or 'tsocks' installed, don't complain to the user;
|
|
|
|
|
and explain our warning about tsocks better.
|
|
|
|
|
- Fix some urls in the exit notice file and make it XHTML1.1 strict
|
|
|
|
|
compliant. Based on a patch from Christian Kujau.
|
|
|
|
|
|
|
|
|
|
o Documentation changes:
|
|
|
|
|
- Modernize the doxygen configuration file slightly. Fixes bug 2707.
|
|
|
|
|
- Resolve all doxygen warnings except those for missing documentation.
|
|
|
|
|
Fixes bug 2705.
|
|
|
|
|
- Add doxygen documentation for more functions, fields, and types.
|
|
|
|
|
- Convert the HACKING file to asciidoc, and add a few new sections
|
|
|
|
|
to it, explaining how we use Git, how we make changelogs, and
|
|
|
|
|
what should go in a patch.
|
|
|
|
|
- Document the default socks host and port (127.0.0.1:9050) for
|
|
|
|
|
tor-resolve.
|
|
|
|
|
- Removed some unnecessary files from the source distribution. The
|
|
|
|
|
AUTHORS file has now been merged into the people page on the
|
|
|
|
|
website. The roadmaps and design doc can now be found in the
|
|
|
|
|
projects directory in svn.
|
|
|
|
|
|
|
|
|
|
o Deprecated and removed features (config):
|
|
|
|
|
- Remove the torrc.complete file. It hasn't been kept up to date
|
|
|
|
|
and users will have better luck checking out the manpage.
|
|
|
|
|
- Remove the HSAuthorityRecordStats option that version 0 hidden
|
|
|
|
|
service authorities could use to track statistics of overall v0
|
|
|
|
|
hidden service usage.
|
|
|
|
|
- Remove the obsolete "NoPublish" option; it has been flagged
|
|
|
|
|
as obsolete and has produced a warning since 0.1.1.18-rc.
|
|
|
|
|
- Caches no longer download and serve v2 networkstatus documents
|
|
|
|
|
unless FetchV2Networkstatus flag is set: these documents haven't
|
|
|
|
|
haven't been used by clients or relays since 0.2.0.x. Resolves
|
|
|
|
|
bug 3022.
|
|
|
|
|
|
|
|
|
|
o Deprecated and removed features (controller):
|
|
|
|
|
- The controller no longer accepts the old obsolete "addr-mappings/"
|
|
|
|
|
or "unregistered-servers-" GETINFO values.
|
|
|
|
|
- The EXTENDED_EVENTS and VERBOSE_NAMES controller features are now
|
|
|
|
|
always on; using them is necessary for correct forward-compatible
|
|
|
|
|
controllers.
|
|
|
|
|
|
|
|
|
|
o Deprecated and removed features (misc):
|
|
|
|
|
- Hidden services no longer publish version 0 descriptors, and clients
|
|
|
|
|
do not request or use version 0 descriptors. However, the old hidden
|
|
|
|
|
service authorities still accept and serve version 0 descriptors
|
|
|
|
|
when contacted by older hidden services/clients.
|
|
|
|
|
- Remove undocumented option "-F" from tor-resolve: it hasn't done
|
|
|
|
|
anything since 0.2.1.16-rc.
|
|
|
|
|
- Remove everything related to building the expert bundle for OS X.
|
|
|
|
|
It has confused many users, doesn't work right on OS X 10.6,
|
|
|
|
|
and is hard to get rid of once installed. Resolves bug 1274.
|
|
|
|
|
- Remove support for .noconnect style addresses. Nobody was using
|
|
|
|
|
them, and they provided another avenue for detecting Tor users
|
|
|
|
|
via application-level web tricks.
|
|
|
|
|
- When we fixed bug 1038 we had to put in a restriction not to send
|
|
|
|
|
RELAY_EARLY cells on rend circuits. This was necessary as long
|
|
|
|
|
as relays using Tor 0.2.1.3-alpha through 0.2.1.18-alpha were
|
|
|
|
|
active. Now remove this obsolete check. Resolves bug 2081.
|
|
|
|
|
- Remove workaround code to handle directory responses from servers
|
|
|
|
|
that had bug 539 (they would send HTTP status 503 responses _and_
|
|
|
|
|
send a body too). Since only server versions before
|
|
|
|
|
0.2.0.16-alpha/0.1.2.19 were affected, there is no longer reason to
|
|
|
|
|
keep the workaround in place.
|
|
|
|
|
- Remove the old 'fuzzy time' logic. It was supposed to be used for
|
|
|
|
|
handling calculations where we have a known amount of clock skew and
|
|
|
|
|
an allowed amount of unknown skew. But we only used it in three
|
|
|
|
|
places, and we never adjusted the known/unknown skew values. This is
|
|
|
|
|
still something we might want to do someday, but if we do, we'll
|
|
|
|
|
want to do it differently.
|
|
|
|
|
- Remove the "--enable-iphone" option to ./configure. According to
|
|
|
|
|
reports from Marco Bonetti, Tor builds fine without any special
|
|
|
|
|
tweaking on recent iPhone SDK versions.
|
|
|
|
|
|
|
|
|
|
|
2011-03-11 23:38:55 +01:00
|
|
|
Changes in version 0.2.1.30 - 2011-02-23
|
|
|
|
|
Tor 0.2.1.30 fixes a variety of less critical bugs. The main other
|
|
|
|
|
change is a slight tweak to Tor's TLS handshake that makes relays
|
|
|
|
|
and bridges that run this new version reachable from Iran again.
|
|
|
|
|
We don't expect this tweak will win the arms race long-term, but it
|
|
|
|
|
buys us time until we roll out a better solution.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Stop sending a CLOCK_SKEW controller status event whenever
|
|
|
|
|
we fetch directory information from a relay that has a wrong clock.
|
|
|
|
|
Instead, only inform the controller when it's a trusted authority
|
|
|
|
|
that claims our clock is wrong. Bugfix on 0.1.2.6-alpha; fixes
|
|
|
|
|
the rest of bug 1074.
|
|
|
|
|
- Fix a bounds-checking error that could allow an attacker to
|
|
|
|
|
remotely crash a directory authority. Bugfix on 0.2.1.5-alpha.
|
|
|
|
|
Found by "piebeer".
|
|
|
|
|
- If relays set RelayBandwidthBurst but not RelayBandwidthRate,
|
|
|
|
|
Tor would ignore their RelayBandwidthBurst setting,
|
|
|
|
|
potentially using more bandwidth than expected. Bugfix on
|
|
|
|
|
0.2.0.1-alpha. Reported by Paul Wouters. Fixes bug 2470.
|
|
|
|
|
- Ignore and warn if the user mistakenly sets "PublishServerDescriptor
|
|
|
|
|
hidserv" in her torrc. The 'hidserv' argument never controlled
|
|
|
|
|
publication of hidden service descriptors. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Adjust our TLS Diffie-Hellman parameters to match those used by
|
|
|
|
|
Apache's mod_ssl.
|
|
|
|
|
- Update to the February 1 2011 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Check for and reject overly long directory certificates and
|
|
|
|
|
directory tokens before they have a chance to hit any assertions.
|
|
|
|
|
Bugfix on 0.2.1.28. Found by "doorss".
|
|
|
|
|
- Bring the logic that gathers routerinfos and assesses the
|
|
|
|
|
acceptability of circuits into line. This prevents a Tor OP from
|
|
|
|
|
getting locked in a cycle of choosing its local OR as an exit for a
|
|
|
|
|
path (due to a .exit request) and then rejecting the circuit because
|
|
|
|
|
its OR is not listed yet. It also prevents Tor clients from using an
|
|
|
|
|
OR running in the same instance as an exit (due to a .exit request)
|
|
|
|
|
if the OR does not meet the same requirements expected of an OR
|
|
|
|
|
running elsewhere. Fixes bug 1859; bugfix on 0.1.0.1-rc.
|
|
|
|
|
|
|
|
|
|
o Packaging changes:
|
|
|
|
|
- Stop shipping the Tor specs files and development proposal documents
|
|
|
|
|
in the tarball. They are now in a separate git repository at
|
|
|
|
|
git://git.torproject.org/torspec.git
|
|
|
|
|
- Do not include Git version tags as though they are SVN tags when
|
|
|
|
|
generating a tarball from inside a repository that has switched
|
|
|
|
|
between branches. Bugfix on 0.2.1.15-rc; fixes bug 2402.
|
|
|
|
|
|
|
|
|
|
|
2011-01-16 01:56:10 +01:00
|
|
|
Changes in version 0.2.1.29 - 2011-01-15
|
|
|
|
|
Tor 0.2.1.29 continues our recent code security audit work. The main
|
|
|
|
|
fix resolves a remote heap overflow vulnerability that can allow remote
|
|
|
|
|
code execution. Other fixes address a variety of assert and crash bugs,
|
|
|
|
|
most of which we think are hard to exploit remotely.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (security):
|
|
|
|
|
- Fix a heap overflow bug where an adversary could cause heap
|
|
|
|
|
corruption. This bug probably allows remote code execution
|
|
|
|
|
attacks. Reported by "debuger". Fixes CVE-2011-0427. Bugfix on
|
|
|
|
|
0.1.2.10-rc.
|
|
|
|
|
- Prevent a denial-of-service attack by disallowing any
|
|
|
|
|
zlib-compressed data whose compression factor is implausibly
|
|
|
|
|
high. Fixes part of bug 2324; reported by "doorss".
|
|
|
|
|
- Zero out a few more keys in memory before freeing them. Fixes
|
|
|
|
|
bug 2384 and part of bug 2385. These key instances found by
|
|
|
|
|
"cypherpunks", based on Andrew Case's report about being able
|
|
|
|
|
to find sensitive data in Tor's memory space if you have enough
|
|
|
|
|
permissions. Bugfix on 0.0.2pre9.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- Prevent calls to Libevent from inside Libevent log handlers.
|
|
|
|
|
This had potential to cause a nasty set of crashes, especially
|
|
|
|
|
if running Libevent with debug logging enabled, and running
|
|
|
|
|
Tor with a controller watching for low-severity log messages.
|
|
|
|
|
Bugfix on 0.1.0.2-rc. Fixes bug 2190.
|
|
|
|
|
- Add a check for SIZE_T_MAX to tor_realloc() to try to avoid
|
|
|
|
|
underflow errors there too. Fixes the other part of bug 2324.
|
|
|
|
|
- Fix a bug where we would assert if we ever had a
|
|
|
|
|
cached-descriptors.new file (or another file read directly into
|
|
|
|
|
memory) of exactly SIZE_T_CEILING bytes. Fixes bug 2326; bugfix
|
|
|
|
|
on 0.2.1.25. Found by doorss.
|
|
|
|
|
- Fix some potential asserts and parsing issues with grossly
|
|
|
|
|
malformed router caches. Fixes bug 2352; bugfix on Tor 0.2.1.27.
|
|
|
|
|
Found by doorss.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (other):
|
|
|
|
|
- Fix a bug with handling misformed replies to reverse DNS lookup
|
|
|
|
|
requests in DNSPort. Bugfix on Tor 0.2.0.1-alpha. Related to a
|
|
|
|
|
bug reported by doorss.
|
|
|
|
|
- Fix compilation on mingw when a pthreads compatibility library
|
|
|
|
|
has been installed. (We don't want to use it, so we shouldn't
|
|
|
|
|
be including pthread.h.) Fixes bug 2313; bugfix on 0.1.0.1-rc.
|
|
|
|
|
- Fix a bug where we would declare that we had run out of virtual
|
|
|
|
|
addresses when the address space was only half-exhausted. Bugfix
|
|
|
|
|
on 0.1.2.1-alpha.
|
|
|
|
|
- Correctly handle the case where AutomapHostsOnResolve is set but
|
|
|
|
|
no virtual addresses are available. Fixes bug 2328; bugfix on
|
|
|
|
|
0.1.2.1-alpha. Bug found by doorss.
|
2011-01-19 01:12:01 +01:00
|
|
|
- Correctly handle wrapping around when we run out of virtual
|
|
|
|
|
address space. Found by cypherpunks; bugfix on 0.2.0.5-alpha.
|
2011-01-16 01:56:10 +01:00
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Update to the January 1 2011 Maxmind GeoLite Country database.
|
|
|
|
|
- Introduce output size checks on all of our decryption functions.
|
|
|
|
|
|
|
|
|
|
o Build changes:
|
|
|
|
|
- Tor does not build packages correctly with Automake 1.6 and earlier;
|
|
|
|
|
added a check to Makefile.am to make sure that we're building with
|
|
|
|
|
Automake 1.7 or later.
|
2011-01-19 01:12:01 +01:00
|
|
|
- The 0.2.1.28 tarball was missing src/common/OpenBSD_malloc_Linux.c
|
|
|
|
|
because we built it with a too-old version of automake. Thus that
|
|
|
|
|
release broke ./configure --enable-openbsd-malloc, which is popular
|
|
|
|
|
among really fast exit relays on Linux.
|
2011-01-16 01:56:10 +01:00
|
|
|
|
|
|
|
|
|
2010-12-17 01:20:18 +01:00
|
|
|
Changes in version 0.2.1.28 - 2010-12-17
|
|
|
|
|
Tor 0.2.1.28 does some code cleanup to reduce the risk of remotely
|
|
|
|
|
exploitable bugs. We also took this opportunity to change the IP address
|
|
|
|
|
for one of our directory authorities, and to update the geoip database
|
|
|
|
|
we ship.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fix a remotely exploitable bug that could be used to crash instances
|
|
|
|
|
of Tor remotely by overflowing on the heap. Remote-code execution
|
|
|
|
|
hasn't been confirmed, but can't be ruled out. Everyone should
|
|
|
|
|
upgrade. Bugfix on the 0.1.1 series and later.
|
|
|
|
|
|
|
|
|
|
o Directory authority changes:
|
|
|
|
|
- Change IP address and ports for gabelmoo (v3 directory authority).
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Update to the December 1 2010 Maxmind GeoLite Country database.
|
|
|
|
|
|
|
|
|
|
|
2010-12-01 06:07:03 +01:00
|
|
|
Changes in version 0.2.1.27 - 2010-11-23
|
|
|
|
|
Yet another OpenSSL security patch broke its compatibility with Tor:
|
|
|
|
|
Tor 0.2.1.27 makes relays work with openssl 0.9.8p and 1.0.0.b. We
|
|
|
|
|
also took this opportunity to fix several crash bugs, integrate a new
|
|
|
|
|
directory authority, and update the bundled GeoIP database.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Resolve an incompatibility with OpenSSL 0.9.8p and OpenSSL 1.0.0b:
|
|
|
|
|
No longer set the tlsext_host_name extension on server SSL objects;
|
|
|
|
|
but continue to set it on client SSL objects. Our goal in setting
|
|
|
|
|
it was to imitate a browser, not a vhosting server. Fixes bug 2204;
|
|
|
|
|
bugfix on 0.2.1.1-alpha.
|
|
|
|
|
- Do not log messages to the controller while shrinking buffer
|
|
|
|
|
freelists. Doing so would sometimes make the controller connection
|
|
|
|
|
try to allocate a buffer chunk, which would mess up the internals
|
|
|
|
|
of the freelist and cause an assertion failure. Fixes bug 1125;
|
|
|
|
|
fixed by Robert Ransom. Bugfix on 0.2.0.16-alpha.
|
|
|
|
|
- Learn our external IP address when we're a relay or bridge, even if
|
|
|
|
|
we set PublishServerDescriptor to 0. Bugfix on 0.2.0.3-alpha,
|
|
|
|
|
where we introduced bridge relays that don't need to publish to
|
|
|
|
|
be useful. Fixes bug 2050.
|
|
|
|
|
- Do even more to reject (and not just ignore) annotations on
|
|
|
|
|
router descriptors received anywhere but from the cache. Previously
|
|
|
|
|
we would ignore such annotations at first, but cache them to disk
|
|
|
|
|
anyway. Bugfix on 0.2.0.8-alpha. Found by piebeer.
|
|
|
|
|
- When you're using bridges and your network goes away and your
|
|
|
|
|
bridges get marked as down, recover when you attempt a new socks
|
|
|
|
|
connection (if the network is back), rather than waiting up to an
|
|
|
|
|
hour to try fetching new descriptors for your bridges. Bugfix on
|
|
|
|
|
0.2.0.3-alpha; fixes bug 1981.
|
|
|
|
|
|
|
|
|
|
o Major features:
|
|
|
|
|
- Move to the November 2010 Maxmind GeoLite country db (rather
|
|
|
|
|
than the June 2009 ip-to-country GeoIP db) for our statistics that
|
|
|
|
|
count how many users relays are seeing from each country. Now we'll
|
|
|
|
|
have more accurate data, especially for many African countries.
|
|
|
|
|
|
|
|
|
|
o New directory authorities:
|
|
|
|
|
- Set up maatuska (run by Linus Nordberg) as the eighth v3 directory
|
|
|
|
|
authority.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix an assertion failure that could occur in directory caches or
|
|
|
|
|
bridge users when using a very short voting interval on a testing
|
|
|
|
|
network. Diagnosed by Robert Hogan. Fixes bug 1141; bugfix on
|
|
|
|
|
0.2.0.8-alpha.
|
|
|
|
|
- Enforce multiplicity rules when parsing annotations. Bugfix on
|
|
|
|
|
0.2.0.8-alpha. Found by piebeer.
|
|
|
|
|
- Allow handshaking OR connections to take a full KeepalivePeriod
|
|
|
|
|
seconds to handshake. Previously, we would close them after
|
|
|
|
|
IDLE_OR_CONN_TIMEOUT (180) seconds, the same timeout as if they
|
|
|
|
|
were open. Bugfix on 0.2.1.26; fixes bug 1840. Thanks to mingw-san
|
|
|
|
|
for analysis help.
|
|
|
|
|
- When building with --enable-gcc-warnings on OpenBSD, disable
|
|
|
|
|
warnings in system headers. This makes --enable-gcc-warnings
|
|
|
|
|
pass on OpenBSD 4.8.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Exit nodes didn't recognize EHOSTUNREACH as a plausible error code,
|
|
|
|
|
and so sent back END_STREAM_REASON_MISC. Clients now recognize a new
|
|
|
|
|
stream ending reason for this case: END_STREAM_REASON_NOROUTE.
|
|
|
|
|
Servers can start sending this code when enough clients recognize
|
|
|
|
|
it. Bugfix on 0.1.0.1-rc; fixes part of bug 1793.
|
|
|
|
|
- Build correctly on mingw with more recent versions of OpenSSL 0.9.8.
|
|
|
|
|
Patch from mingw-san.
|
|
|
|
|
|
|
|
|
|
o Removed files:
|
|
|
|
|
- Remove the old debian/ directory from the main Tor distribution.
|
|
|
|
|
The official Tor-for-debian git repository lives at the URL
|
|
|
|
|
https://git.torproject.org/debian/tor.git
|
|
|
|
|
- Stop shipping the old doc/website/ directory in the tarball. We
|
|
|
|
|
changed the website format in late 2010, and what we shipped in
|
|
|
|
|
0.2.1.26 really wasn't that useful anyway.
|
|
|
|
|
|
|
|
|
|
|
2010-05-05 09:19:41 +02:00
|
|
|
Changes in version 0.2.1.26 - 2010-05-02
|
|
|
|
|
Tor 0.2.1.26 addresses the recent connection and memory overload
|
|
|
|
|
problems we've been seeing on relays, especially relays with their
|
|
|
|
|
DirPort open. If your relay has been crashing, or you turned it off
|
|
|
|
|
because it used too many resources, give this release a try.
|
|
|
|
|
|
|
|
|
|
This release also fixes yet another instance of broken OpenSSL libraries
|
|
|
|
|
that was causing some relays to drop out of the consensus.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Teach relays to defend themselves from connection overload. Relays
|
|
|
|
|
now close idle circuits early if it looks like they were intended
|
|
|
|
|
for directory fetches. Relays are also more aggressive about closing
|
|
|
|
|
TLS connections that have no circuits on them. Such circuits are
|
|
|
|
|
unlikely to be re-used, and tens of thousands of them were piling
|
|
|
|
|
up at the fast relays, causing the relays to run out of sockets
|
|
|
|
|
and memory. Bugfix on 0.2.0.22-rc (where clients started tunneling
|
|
|
|
|
their directory fetches over TLS).
|
|
|
|
|
- Fix SSL renegotiation behavior on OpenSSL versions like on Centos
|
|
|
|
|
that claim to be earlier than 0.9.8m, but which have in reality
|
|
|
|
|
backported huge swaths of 0.9.8m or 0.9.8n renegotiation
|
|
|
|
|
behavior. Possible fix for some cases of bug 1346.
|
|
|
|
|
- Directory mirrors were fetching relay descriptors only from v2
|
|
|
|
|
directory authorities, rather than v3 authorities like they should.
|
|
|
|
|
Only 2 v2 authorities remain (compared to 7 v3 authorities), leading
|
|
|
|
|
to a serious bottleneck. Bugfix on 0.2.0.9-alpha. Fixes bug 1324.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Finally get rid of the deprecated and now harmful notion of "clique
|
|
|
|
|
mode", where directory authorities maintain TLS connections to
|
|
|
|
|
every other relay.
|
|
|
|
|
|
|
|
|
|
o Testsuite fixes:
|
|
|
|
|
- In the util/threads test, no longer free the test_mutex before all
|
|
|
|
|
worker threads have finished. Bugfix on 0.2.1.6-alpha.
|
|
|
|
|
- The master thread could starve the worker threads quite badly on
|
|
|
|
|
certain systems, causing them to run only partially in the allowed
|
|
|
|
|
window. This resulted in test failures. Now the master thread sleeps
|
|
|
|
|
occasionally for a few microseconds while the two worker-threads
|
|
|
|
|
compete for the mutex. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
|
|
|
|
|
|
2010-03-16 05:44:30 +01:00
|
|
|
Changes in version 0.2.1.25 - 2010-03-16
|
|
|
|
|
Tor 0.2.1.25 fixes a regression introduced in 0.2.1.23 that could
|
|
|
|
|
prevent relays from guessing their IP address correctly. It also fixes
|
|
|
|
|
several minor potential security bugs.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fix a regression from our patch for bug 1244 that caused relays
|
|
|
|
|
to guess their IP address incorrectly if they didn't set Address
|
|
|
|
|
in their torrc and/or their address fails to resolve. Bugfix on
|
|
|
|
|
0.2.1.23; fixes bug 1269.
|
|
|
|
|
- When freeing a session key, zero it out completely. We only zeroed
|
|
|
|
|
the first ptrsize bytes. Bugfix on 0.0.2pre8. Discovered and
|
|
|
|
|
patched by ekir. Fixes bug 1254.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix a dereference-then-NULL-check sequence when publishing
|
|
|
|
|
descriptors. Bugfix on 0.2.1.5-alpha. Discovered by ekir; fixes
|
|
|
|
|
bug 1255.
|
|
|
|
|
- Fix another dereference-then-NULL-check sequence. Bugfix on
|
|
|
|
|
0.2.1.14-rc. Discovered by ekir; fixes bug 1256.
|
|
|
|
|
- Make sure we treat potentially not NUL-terminated strings correctly.
|
|
|
|
|
Bugfix on 0.1.1.13-alpha. Discovered by rieo; fixes bug 1257.
|
|
|
|
|
|
|
|
|
|
|
2010-02-21 23:52:52 +01:00
|
|
|
Changes in version 0.2.1.24 - 2010-02-21
|
|
|
|
|
Tor 0.2.1.24 makes Tor work again on the latest OS X -- this time
|
|
|
|
|
for sure!
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Work correctly out-of-the-box with even more vendor-patched versions
|
|
|
|
|
of OpenSSL. In particular, make it so Debian and OS X don't need
|
|
|
|
|
customized patches to run/build.
|
|
|
|
|
|
|
|
|
|
|
2010-02-13 20:10:57 +01:00
|
|
|
Changes in version 0.2.1.23 - 2010-02-13
|
|
|
|
|
Tor 0.2.1.23 fixes a huge client-side performance bug, makes Tor work
|
|
|
|
|
again on the latest OS X, and updates the location of a directory
|
|
|
|
|
authority.
|
|
|
|
|
|
2010-02-12 18:35:40 +01:00
|
|
|
o Major bugfixes (performance):
|
|
|
|
|
- We were selecting our guards uniformly at random, and then weighting
|
|
|
|
|
which of our guards we'd use uniformly at random. This imbalance
|
|
|
|
|
meant that Tor clients were severely limited on throughput (and
|
|
|
|
|
probably latency too) by the first hop in their circuit. Now we
|
|
|
|
|
select guards weighted by currently advertised bandwidth. We also
|
|
|
|
|
automatically discard guards picked using the old algorithm. Fixes
|
|
|
|
|
bug 1217; bugfix on 0.2.1.3-alpha. Found by Mike Perry.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Make Tor work again on the latest OS X: when deciding whether to
|
|
|
|
|
use strange flags to turn TLS renegotiation on, detect the OpenSSL
|
|
|
|
|
version at run-time, not compile time. We need to do this because
|
|
|
|
|
Apple doesn't update its dev-tools headers when it updates its
|
|
|
|
|
libraries in a security patch.
|
|
|
|
|
- Fix a potential buffer overflow in lookup_last_hid_serv_request()
|
|
|
|
|
that could happen on 32-bit platforms with 64-bit time_t. Also fix
|
|
|
|
|
a memory leak when requesting a hidden service descriptor we've
|
|
|
|
|
requested before. Fixes bug 1242, bugfix on 0.2.0.18-alpha. Found
|
|
|
|
|
by aakova.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Refactor resolve_my_address() to not use gethostbyname() anymore.
|
|
|
|
|
Fixes bug 1244; bugfix on 0.0.2pre25. Reported by Mike Mestnik.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Avoid a mad rush at the beginning of each month when each client
|
|
|
|
|
rotates half of its guards. Instead we spread the rotation out
|
|
|
|
|
throughout the month, but we still avoid leaving a precise timestamp
|
|
|
|
|
in the state file about when we first picked the guard. Improves
|
|
|
|
|
over the behavior introduced in 0.1.2.17.
|
|
|
|
|
|
|
|
|
|
|
2010-01-19 20:43:05 +01:00
|
|
|
Changes in version 0.2.1.22 - 2010-01-19
|
|
|
|
|
Tor 0.2.1.22 fixes a critical privacy problem in bridge directory
|
|
|
|
|
authorities -- it would tell you its whole history of bridge descriptors
|
|
|
|
|
if you make the right directory request. This stable update also
|
|
|
|
|
rotates two of the seven v3 directory authority keys and locations.
|
|
|
|
|
|
|
|
|
|
o Directory authority changes:
|
|
|
|
|
- Rotate keys (both v3 identity and relay identity) for moria1
|
|
|
|
|
and gabelmoo.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Stop bridge directory authorities from answering dbg-stability.txt
|
|
|
|
|
directory queries, which would let people fetch a list of all
|
|
|
|
|
bridge identities they track. Bugfix on 0.2.1.6-alpha.
|
|
|
|
|
|
|
|
|
|
|
2009-12-21 09:22:49 +01:00
|
|
|
Changes in version 0.2.1.21 - 2009-12-21
|
2010-01-19 20:43:05 +01:00
|
|
|
Tor 0.2.1.21 fixes an incompatibility with the most recent OpenSSL
|
2009-12-21 09:22:49 +01:00
|
|
|
library. If you use Tor on Linux / Unix and you're getting SSL
|
|
|
|
|
renegotiation errors, upgrading should help. We also recommend an
|
|
|
|
|
upgrade if you're an exit relay.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Work around a security feature in OpenSSL 0.9.8l that prevents our
|
|
|
|
|
handshake from working unless we explicitly tell OpenSSL that we
|
|
|
|
|
are using SSL renegotiation safely. We are, of course, but OpenSSL
|
|
|
|
|
0.9.8l won't work unless we say we are.
|
|
|
|
|
- Avoid crashing if the client is trying to upload many bytes and the
|
|
|
|
|
circuit gets torn down at the same time, or if the flip side
|
|
|
|
|
happens on the exit relay. Bugfix on 0.2.0.1-alpha; fixes bug 1150.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Do not refuse to learn about authority certs and v2 networkstatus
|
|
|
|
|
documents that are older than the latest consensus. This bug might
|
|
|
|
|
have degraded client bootstrapping. Bugfix on 0.2.0.10-alpha.
|
|
|
|
|
Spotted and fixed by xmux.
|
|
|
|
|
- Fix a couple of very-hard-to-trigger memory leaks, and one hard-to-
|
|
|
|
|
trigger platform-specific option misparsing case found by Coverity
|
|
|
|
|
Scan.
|
|
|
|
|
- Fix a compilation warning on Fedora 12 by removing an impossible-to-
|
|
|
|
|
trigger assert. Fixes bug 1173.
|
|
|
|
|
|
|
|
|
|
|
2009-11-17 21:35:14 +01:00
|
|
|
Changes in version 0.2.1.20 - 2009-10-15
|
|
|
|
|
Tor 0.2.1.20 fixes a crash bug when you're accessing many hidden
|
|
|
|
|
services at once, prepares for more performance improvements, and
|
|
|
|
|
fixes a bunch of smaller bugs.
|
|
|
|
|
|
|
|
|
|
The Windows and OS X bundles also include a more recent Vidalia,
|
|
|
|
|
and switch from Privoxy to Polipo.
|
|
|
|
|
|
|
|
|
|
The OS X installers are now drag and drop. It's best to un-install
|
|
|
|
|
Tor/Vidalia and then install this new bundle, rather than upgrade. If
|
|
|
|
|
you want to upgrade, you'll need to update the paths for Tor and Polipo
|
|
|
|
|
in the Vidalia Settings window.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Send circuit or stream sendme cells when our window has decreased
|
|
|
|
|
by 100 cells, not when it has decreased by 101 cells. Bug uncovered
|
|
|
|
|
by Karsten when testing the "reduce circuit window" performance
|
|
|
|
|
patch. Bugfix on the 54th commit on Tor -- from July 2002,
|
|
|
|
|
before the release of Tor 0.0.0. This is the new winner of the
|
|
|
|
|
oldest-bug prize.
|
|
|
|
|
- Fix a remotely triggerable memory leak when a consensus document
|
|
|
|
|
contains more than one signature from the same voter. Bugfix on
|
|
|
|
|
0.2.0.3-alpha.
|
|
|
|
|
- Avoid segfault in rare cases when finishing an introduction circuit
|
|
|
|
|
as a client and finding out that we don't have an introduction key
|
|
|
|
|
for it. Fixes bug 1073. Reported by Aaron Swartz.
|
|
|
|
|
|
|
|
|
|
o Major features:
|
|
|
|
|
- Tor now reads the "circwindow" parameter out of the consensus,
|
|
|
|
|
and uses that value for its circuit package window rather than the
|
|
|
|
|
default of 1000 cells. Begins the implementation of proposal 168.
|
|
|
|
|
|
|
|
|
|
o New directory authorities:
|
|
|
|
|
- Set up urras (run by Jacob Appelbaum) as the seventh v3 directory
|
|
|
|
|
authority.
|
|
|
|
|
- Move moria1 and tonga to alternate IP addresses.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix a signed/unsigned compile warning in 0.2.1.19.
|
|
|
|
|
- Fix possible segmentation fault on directory authorities. Bugfix on
|
|
|
|
|
0.2.1.14-rc.
|
|
|
|
|
- Fix an extremely rare infinite recursion bug that could occur if
|
|
|
|
|
we tried to log a message after shutting down the log subsystem.
|
|
|
|
|
Found by Matt Edman. Bugfix on 0.2.0.16-alpha.
|
|
|
|
|
- Fix an obscure bug where hidden services on 64-bit big-endian
|
|
|
|
|
systems might mis-read the timestamp in v3 introduce cells, and
|
|
|
|
|
refuse to connect back to the client. Discovered by "rotor".
|
|
|
|
|
Bugfix on 0.2.1.6-alpha.
|
|
|
|
|
- We were triggering a CLOCK_SKEW controller status event whenever
|
|
|
|
|
we connect via the v2 connection protocol to any relay that has
|
|
|
|
|
a wrong clock. Instead, we should only inform the controller when
|
|
|
|
|
it's a trusted authority that claims our clock is wrong. Bugfix
|
|
|
|
|
on 0.2.0.20-rc; starts to fix bug 1074. Reported by SwissTorExit.
|
|
|
|
|
- We were telling the controller about CHECKING_REACHABILITY and
|
|
|
|
|
REACHABILITY_FAILED status events whenever we launch a testing
|
|
|
|
|
circuit or notice that one has failed. Instead, only tell the
|
|
|
|
|
controller when we want to inform the user of overall success or
|
|
|
|
|
overall failure. Bugfix on 0.1.2.6-alpha. Fixes bug 1075. Reported
|
|
|
|
|
by SwissTorExit.
|
|
|
|
|
- Don't warn when we're using a circuit that ends with a node
|
|
|
|
|
excluded in ExcludeExitNodes, but the circuit is not used to access
|
|
|
|
|
the outside world. This should help fix bug 1090. Bugfix on
|
|
|
|
|
0.2.1.6-alpha.
|
|
|
|
|
- Work around a small memory leak in some versions of OpenSSL that
|
|
|
|
|
stopped the memory used by the hostname TLS extension from being
|
|
|
|
|
freed.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Add a "getinfo status/accepted-server-descriptor" controller
|
|
|
|
|
command, which is the recommended way for controllers to learn
|
|
|
|
|
whether our server descriptor has been successfully received by at
|
|
|
|
|
least on directory authority. Un-recommend good-server-descriptor
|
|
|
|
|
getinfo and status events until we have a better design for them.
|
|
|
|
|
|
|
|
|
|
|
2009-07-29 02:44:51 +02:00
|
|
|
Changes in version 0.2.1.19 - 2009-07-28
|
|
|
|
|
Tor 0.2.1.19 fixes a major bug with accessing and providing hidden
|
|
|
|
|
services.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Make accessing hidden services on 0.2.1.x work right again.
|
|
|
|
|
Bugfix on 0.2.1.3-alpha; workaround for bug 1038. Diagnosis and
|
|
|
|
|
part of patch provided by "optimist".
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- When a relay/bridge is writing out its identity key fingerprint to
|
|
|
|
|
the "fingerprint" file and to its logs, write it without spaces. Now
|
|
|
|
|
it will look like the fingerprints in our bridges documentation,
|
|
|
|
|
and confuse fewer users.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Relays no longer publish a new server descriptor if they change
|
|
|
|
|
their MaxAdvertisedBandwidth config option but it doesn't end up
|
|
|
|
|
changing their advertised bandwidth numbers. Bugfix on 0.2.0.28-rc;
|
|
|
|
|
fixes bug 1026. Patch from Sebastian.
|
|
|
|
|
- Avoid leaking memory every time we get a create cell but we have
|
|
|
|
|
so many already queued that we refuse it. Bugfix on 0.2.0.19-alpha;
|
|
|
|
|
fixes bug 1034. Reported by BarkerJr.
|
|
|
|
|
|
|
|
|
|
|
2009-07-24 23:25:51 +02:00
|
|
|
Changes in version 0.2.1.18 - 2009-07-24
|
2009-07-29 02:44:51 +02:00
|
|
|
Tor 0.2.1.18 lays the foundations for performance improvements,
|
|
|
|
|
adds status events to help users diagnose bootstrap problems, adds
|
|
|
|
|
optional authentication/authorization for hidden services, fixes a
|
|
|
|
|
variety of potential anonymity problems, and includes a huge pile of
|
|
|
|
|
other features and bug fixes.
|
|
|
|
|
|
2009-07-24 23:25:51 +02:00
|
|
|
o Major features (clients):
|
|
|
|
|
- Start sending "bootstrap phase" status events to the controller,
|
|
|
|
|
so it can keep the user informed of progress fetching directory
|
|
|
|
|
information and establishing circuits. Also inform the controller
|
|
|
|
|
if we think we're stuck at a particular bootstrap phase. Implements
|
|
|
|
|
proposal 137.
|
|
|
|
|
- Clients replace entry guards that were chosen more than a few months
|
|
|
|
|
ago. This change should significantly improve client performance,
|
|
|
|
|
especially once more people upgrade, since relays that have been
|
|
|
|
|
a guard for a long time are currently overloaded.
|
|
|
|
|
- Network status consensus documents and votes now contain bandwidth
|
|
|
|
|
information for each relay. Clients use the bandwidth values
|
|
|
|
|
in the consensus, rather than the bandwidth values in each
|
|
|
|
|
relay descriptor. This approach opens the door to more accurate
|
|
|
|
|
bandwidth estimates once the directory authorities start doing
|
|
|
|
|
active measurements. Implements part of proposal 141.
|
|
|
|
|
|
|
|
|
|
o Major features (relays):
|
|
|
|
|
- Disable and refactor some debugging checks that forced a linear scan
|
|
|
|
|
over the whole server-side DNS cache. These accounted for over 50%
|
|
|
|
|
of CPU time on a relatively busy exit node's gprof profile. Also,
|
|
|
|
|
disable some debugging checks that appeared in exit node profile
|
|
|
|
|
data. Found by Jacob.
|
|
|
|
|
- New DirPortFrontPage option that takes an html file and publishes
|
|
|
|
|
it as "/" on the DirPort. Now relay operators can provide a
|
|
|
|
|
disclaimer without needing to set up a separate webserver. There's
|
|
|
|
|
a sample disclaimer in contrib/tor-exit-notice.html.
|
|
|
|
|
|
|
|
|
|
o Major features (hidden services):
|
|
|
|
|
- Make it possible to build hidden services that only certain clients
|
|
|
|
|
are allowed to connect to. This is enforced at several points,
|
|
|
|
|
so that unauthorized clients are unable to send INTRODUCE cells
|
|
|
|
|
to the service, or even (depending on the type of authentication)
|
|
|
|
|
to learn introduction points. This feature raises the bar for
|
|
|
|
|
certain kinds of active attacks against hidden services. Design
|
|
|
|
|
and code by Karsten Loesing. Implements proposal 121.
|
|
|
|
|
- Relays now store and serve v2 hidden service descriptors by default,
|
|
|
|
|
i.e., the new default value for HidServDirectoryV2 is 1. This is
|
|
|
|
|
the last step in proposal 114, which aims to make hidden service
|
|
|
|
|
lookups more reliable.
|
|
|
|
|
|
|
|
|
|
o Major features (path selection):
|
|
|
|
|
- ExitNodes and Exclude*Nodes config options now allow you to restrict
|
|
|
|
|
by country code ("{US}") or IP address or address pattern
|
|
|
|
|
("255.128.0.0/16"). Patch from Robert Hogan. It still needs some
|
|
|
|
|
refinement to decide what config options should take priority if
|
|
|
|
|
you ask to both use a particular node and exclude it.
|
|
|
|
|
|
|
|
|
|
o Major features (misc):
|
|
|
|
|
- When building a consensus, do not include routers that are down.
|
|
|
|
|
This cuts down 30% to 40% on consensus size. Implements proposal
|
|
|
|
|
138.
|
|
|
|
|
- New TestingTorNetwork config option to allow adjustment of
|
|
|
|
|
previously constant values that could slow bootstrapping. Implements
|
|
|
|
|
proposal 135. Patch from Karsten.
|
|
|
|
|
- Convert many internal address representations to optionally hold
|
|
|
|
|
IPv6 addresses. Generate and accept IPv6 addresses in many protocol
|
|
|
|
|
elements. Make resolver code handle nameservers located at IPv6
|
|
|
|
|
addresses.
|
|
|
|
|
- More work on making our TLS handshake blend in: modify the list
|
|
|
|
|
of ciphers advertised by OpenSSL in client mode to even more
|
|
|
|
|
closely resemble a common web browser. We cheat a little so that
|
|
|
|
|
we can advertise ciphers that the locally installed OpenSSL doesn't
|
|
|
|
|
know about.
|
|
|
|
|
- Use the TLS1 hostname extension to more closely resemble browser
|
|
|
|
|
behavior.
|
|
|
|
|
|
|
|
|
|
o Security fixes (anonymity/entropy):
|
|
|
|
|
- Never use a connection with a mismatched address to extend a
|
|
|
|
|
circuit, unless that connection is canonical. A canonical
|
|
|
|
|
connection is one whose address is authenticated by the router's
|
|
|
|
|
identity key, either in a NETINFO cell or in a router descriptor.
|
|
|
|
|
- Implement most of proposal 110: The first K cells to be sent
|
|
|
|
|
along a circuit are marked as special "early" cells; only K "early"
|
|
|
|
|
cells will be allowed. Once this code is universal, we can block
|
|
|
|
|
certain kinds of denial-of-service attack by requiring that EXTEND
|
|
|
|
|
commands must be sent using an "early" cell.
|
|
|
|
|
- Resume using OpenSSL's RAND_poll() for better (and more portable)
|
|
|
|
|
cross-platform entropy collection again. We used to use it, then
|
|
|
|
|
stopped using it because of a bug that could crash systems that
|
|
|
|
|
called RAND_poll when they had a lot of fds open. It looks like the
|
|
|
|
|
bug got fixed in late 2006. Our new behavior is to call RAND_poll()
|
|
|
|
|
at startup, and to call RAND_poll() when we reseed later only if
|
|
|
|
|
we have a non-buggy OpenSSL version.
|
|
|
|
|
- When the client is choosing entry guards, now it selects at most
|
|
|
|
|
one guard from a given relay family. Otherwise we could end up with
|
|
|
|
|
all of our entry points into the network run by the same operator.
|
|
|
|
|
Suggested by Camilo Viecco. Fix on 0.1.1.11-alpha.
|
|
|
|
|
- Do not use or believe expired v3 authority certificates. Patch
|
|
|
|
|
from Karsten. Bugfix in 0.2.0.x. Fixes bug 851.
|
|
|
|
|
- Drop begin cells to a hidden service if they come from the middle
|
|
|
|
|
of a circuit. Patch from lark.
|
|
|
|
|
- When we erroneously receive two EXTEND cells for the same circuit
|
|
|
|
|
ID on the same connection, drop the second. Patch from lark.
|
|
|
|
|
- Authorities now vote for the Stable flag for any router whose
|
|
|
|
|
weighted MTBF is at least 5 days, regardless of the mean MTBF.
|
|
|
|
|
- Clients now never report any stream end reason except 'MISC'.
|
|
|
|
|
Implements proposal 148.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- Parse dates and IPv4 addresses in a locale- and libc-independent
|
|
|
|
|
manner, to avoid platform-dependent behavior on malformed input.
|
|
|
|
|
- Fix a crash that occurs on exit nodes when a nameserver request
|
|
|
|
|
timed out. Bugfix on 0.1.2.1-alpha; our CLEAR debugging code had
|
|
|
|
|
been suppressing the bug since 0.1.2.10-alpha. Partial fix for
|
|
|
|
|
bug 929.
|
|
|
|
|
- Do not assume that a stack-allocated character array will be
|
|
|
|
|
64-bit aligned on platforms that demand that uint64_t access is
|
|
|
|
|
aligned. Possible fix for bug 604.
|
|
|
|
|
- Resolve a very rare crash bug that could occur when the user forced
|
|
|
|
|
a nameserver reconfiguration during the middle of a nameserver
|
|
|
|
|
probe. Fixes bug 526. Bugfix on 0.1.2.1-alpha.
|
|
|
|
|
- Avoid a "0 divided by 0" calculation when calculating router uptime
|
|
|
|
|
at directory authorities. Bugfix on 0.2.0.8-alpha.
|
|
|
|
|
- Fix an assertion bug in parsing policy-related options; possible fix
|
|
|
|
|
for bug 811.
|
|
|
|
|
- Rate-limit too-many-sockets messages: when they happen, they happen
|
|
|
|
|
a lot and end up filling up the disk. Resolves bug 748.
|
|
|
|
|
- Fix a race condition that could cause crashes or memory corruption
|
|
|
|
|
when running as a server with a controller listening for log
|
|
|
|
|
messages.
|
|
|
|
|
- Avoid crashing when we have a policy specified in a DirPolicy or
|
|
|
|
|
SocksPolicy or ReachableAddresses option with ports set on it,
|
|
|
|
|
and we re-load the policy. May fix bug 996.
|
|
|
|
|
- Fix an assertion failure on 64-bit platforms when we allocated
|
|
|
|
|
memory right up to the end of a memarea, then realigned the memory
|
|
|
|
|
one step beyond the end. Fixes a possible cause of bug 930.
|
|
|
|
|
- Protect the count of open sockets with a mutex, so we can't
|
|
|
|
|
corrupt it when two threads are closing or opening sockets at once.
|
|
|
|
|
Fix for bug 939. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (clients):
|
|
|
|
|
- Discard router descriptors as we load them if they are more than
|
|
|
|
|
five days old. Otherwise if Tor is off for a long time and then
|
|
|
|
|
starts with cached descriptors, it will try to use the onion keys
|
|
|
|
|
in those obsolete descriptors when building circuits. Fixes bug 887.
|
|
|
|
|
- When we choose to abandon a new entry guard because we think our
|
|
|
|
|
older ones might be better, close any circuits pending on that
|
|
|
|
|
new entry guard connection. This fix should make us recover much
|
|
|
|
|
faster when our network is down and then comes back. Bugfix on
|
|
|
|
|
0.1.2.8-beta; found by lodger.
|
|
|
|
|
- When Tor clients restart after 1-5 days, they discard all their
|
|
|
|
|
cached descriptors as too old, but they still use the cached
|
|
|
|
|
consensus document. This approach is good for robustness, but
|
|
|
|
|
bad for performance: since they don't know any bandwidths, they
|
|
|
|
|
end up choosing at random rather than weighting their choice by
|
|
|
|
|
speed. Fixed by the above feature of putting bandwidths in the
|
|
|
|
|
consensus.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (relays):
|
|
|
|
|
- Relays were falling out of the networkstatus consensus for
|
|
|
|
|
part of a day if they changed their local config but the
|
|
|
|
|
authorities discarded their new descriptor as "not sufficiently
|
|
|
|
|
different". Now directory authorities accept a descriptor as changed
|
|
|
|
|
if BandwidthRate or BandwidthBurst changed. Partial fix for bug 962;
|
|
|
|
|
patch by Sebastian.
|
|
|
|
|
- Ensure that two circuits can never exist on the same connection
|
|
|
|
|
with the same circuit ID, even if one is marked for close. This
|
|
|
|
|
is conceivably a bugfix for bug 779; fixes a bug on 0.1.0.4-rc.
|
|
|
|
|
- Directory authorities were neglecting to mark relays down in their
|
|
|
|
|
internal histories if the relays fall off the routerlist without
|
|
|
|
|
ever being found unreachable. So there were relays in the histories
|
|
|
|
|
that haven't been seen for eight months, and are listed as being
|
|
|
|
|
up for eight months. This wreaked havoc on the "median wfu" and
|
|
|
|
|
"median mtbf" calculations, in turn making Guard and Stable flags
|
|
|
|
|
wrong, hurting network performance. Fixes bugs 696 and 969. Bugfix
|
|
|
|
|
on 0.2.0.6-alpha.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (hidden services):
|
|
|
|
|
- When establishing a hidden service, introduction points that
|
|
|
|
|
originate from cannibalized circuits were completely ignored
|
|
|
|
|
and not included in rendezvous service descriptors. This might
|
|
|
|
|
have been another reason for delay in making a hidden service
|
|
|
|
|
available. Bugfix from long ago (0.0.9.x?)
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (memory and resource management):
|
|
|
|
|
- Fixed some memory leaks -- some quite frequent, some almost
|
|
|
|
|
impossible to trigger -- based on results from Coverity.
|
|
|
|
|
- Speed up parsing and cut down on memory fragmentation by using
|
|
|
|
|
stack-style allocations for parsing directory objects. Previously,
|
|
|
|
|
this accounted for over 40% of allocations from within Tor's code
|
|
|
|
|
on a typical directory cache.
|
|
|
|
|
- Use a Bloom filter rather than a digest-based set to track which
|
|
|
|
|
descriptors we need to keep around when we're cleaning out old
|
|
|
|
|
router descriptors. This speeds up the computation significantly,
|
|
|
|
|
and may reduce fragmentation.
|
|
|
|
|
|
|
|
|
|
o New/changed config options:
|
|
|
|
|
- Now NodeFamily and MyFamily config options allow spaces in
|
|
|
|
|
identity fingerprints, so it's easier to paste them in.
|
|
|
|
|
Suggested by Lucky Green.
|
|
|
|
|
- Allow ports 465 and 587 in the default exit policy again. We had
|
|
|
|
|
rejected them in 0.1.0.15, because back in 2005 they were commonly
|
|
|
|
|
misconfigured and ended up as spam targets. We hear they are better
|
|
|
|
|
locked down these days.
|
|
|
|
|
- Make TrackHostExit mappings expire a while after their last use, not
|
|
|
|
|
after their creation. Patch from Robert Hogan.
|
|
|
|
|
- Add an ExcludeExitNodes option so users can list a set of nodes
|
|
|
|
|
that should be be excluded from the exit node position, but
|
|
|
|
|
allowed elsewhere. Implements proposal 151.
|
|
|
|
|
- New --hush command-line option similar to --quiet. While --quiet
|
|
|
|
|
disables all logging to the console on startup, --hush limits the
|
|
|
|
|
output to messages of warning and error severity.
|
|
|
|
|
- New configure/torrc options (--enable-geoip-stats,
|
|
|
|
|
DirRecordUsageByCountry) to record how many IPs we've served
|
|
|
|
|
directory info to in each country code, how many status documents
|
|
|
|
|
total we've sent to each country code, and what share of the total
|
|
|
|
|
directory requests we should expect to see.
|
|
|
|
|
- Make outbound DNS packets respect the OutboundBindAddress setting.
|
|
|
|
|
Fixes the bug part of bug 798. Bugfix on 0.1.2.2-alpha.
|
|
|
|
|
- Allow separate log levels to be configured for different logging
|
|
|
|
|
domains. For example, this allows one to log all notices, warnings,
|
|
|
|
|
or errors, plus all memory management messages of level debug or
|
|
|
|
|
higher, with: Log [MM] debug-err [*] notice-err file /var/log/tor.
|
|
|
|
|
- Update to the "June 3 2009" ip-to-country file.
|
|
|
|
|
|
|
|
|
|
o Minor features (relays):
|
|
|
|
|
- Raise the minimum rate limiting to be a relay from 20000 bytes
|
|
|
|
|
to 20480 bytes (aka 20KB/s), to match our documentation. Also
|
|
|
|
|
update directory authorities so they always assign the Fast flag
|
|
|
|
|
to relays with 20KB/s of capacity. Now people running relays won't
|
|
|
|
|
suddenly find themselves not seeing any use, if the network gets
|
|
|
|
|
faster on average.
|
|
|
|
|
- If we're a relay and we change our IP address, be more verbose
|
|
|
|
|
about the reason that made us change. Should help track down
|
|
|
|
|
further bugs for relays on dynamic IP addresses.
|
|
|
|
|
- Exit servers can now answer resolve requests for ip6.arpa addresses.
|
|
|
|
|
- Implement most of Proposal 152: allow specialized servers to permit
|
|
|
|
|
single-hop circuits, and clients to use those servers to build
|
|
|
|
|
single-hop circuits when using a specialized controller. Patch
|
|
|
|
|
from Josh Albrecht. Resolves feature request 768.
|
|
|
|
|
- When relays do their initial bandwidth measurement, don't limit
|
|
|
|
|
to just our entry guards for the test circuits. Otherwise we tend
|
|
|
|
|
to have multiple test circuits going through a single entry guard,
|
|
|
|
|
which makes our bandwidth test less accurate. Fixes part of bug 654;
|
|
|
|
|
patch contributed by Josh Albrecht.
|
|
|
|
|
|
|
|
|
|
o Minor features (directory authorities):
|
|
|
|
|
- Try not to open more than one descriptor-downloading connection
|
|
|
|
|
to an authority at once. This should reduce load on directory
|
|
|
|
|
authorities. Fixes bug 366.
|
|
|
|
|
- Add cross-certification to newly generated certificates, so that
|
|
|
|
|
a signing key is enough information to look up a certificate. Start
|
|
|
|
|
serving certificates by <identity digest, signing key digest>
|
|
|
|
|
pairs. Implements proposal 157.
|
|
|
|
|
- When a directory authority downloads a descriptor that it then
|
|
|
|
|
immediately rejects, do not retry downloading it right away. Should
|
|
|
|
|
save some bandwidth on authorities. Fix for bug 888. Patch by
|
|
|
|
|
Sebastian Hahn.
|
|
|
|
|
- Directory authorities now serve a /tor/dbg-stability.txt URL to
|
|
|
|
|
help debug WFU and MTBF calculations.
|
|
|
|
|
- In directory authorities' approved-routers files, allow
|
|
|
|
|
fingerprints with or without space.
|
|
|
|
|
|
|
|
|
|
o Minor features (directory mirrors):
|
|
|
|
|
- When a download gets us zero good descriptors, do not notify
|
|
|
|
|
Tor that new directory information has arrived.
|
|
|
|
|
- Servers support a new URL scheme for consensus downloads that
|
|
|
|
|
allows the client to specify which authorities are trusted.
|
|
|
|
|
The server then only sends the consensus if the client will trust
|
|
|
|
|
it. Otherwise a 404 error is sent back. Clients use this
|
|
|
|
|
new scheme when the server supports it (meaning it's running
|
|
|
|
|
0.2.1.1-alpha or later). Implements proposal 134.
|
|
|
|
|
|
|
|
|
|
o Minor features (bridges):
|
|
|
|
|
- If the bridge config line doesn't specify a port, assume 443.
|
|
|
|
|
This makes bridge lines a bit smaller and easier for users to
|
|
|
|
|
understand.
|
|
|
|
|
- If we're using bridges and our network goes away, be more willing
|
|
|
|
|
to forgive our bridges and try again when we get an application
|
|
|
|
|
request.
|
|
|
|
|
|
|
|
|
|
o Minor features (hidden services):
|
|
|
|
|
- When the client launches an introduction circuit, retry with a
|
|
|
|
|
new circuit after 30 seconds rather than 60 seconds.
|
|
|
|
|
- Launch a second client-side introduction circuit in parallel
|
|
|
|
|
after a delay of 15 seconds (based on work by Christian Wilms).
|
|
|
|
|
- Hidden services start out building five intro circuits rather
|
|
|
|
|
than three, and when the first three finish they publish a service
|
|
|
|
|
descriptor using those. Now we publish our service descriptor much
|
|
|
|
|
faster after restart.
|
|
|
|
|
- Drop the requirement to have an open dir port for storing and
|
|
|
|
|
serving v2 hidden service descriptors.
|
|
|
|
|
|
|
|
|
|
o Minor features (build and packaging):
|
|
|
|
|
- On Linux, use the prctl call to re-enable core dumps when the User
|
|
|
|
|
option is set.
|
|
|
|
|
- Try to make sure that the version of Libevent we're running with
|
|
|
|
|
is binary-compatible with the one we built with. May address bug
|
|
|
|
|
897 and others.
|
|
|
|
|
- Add a new --enable-local-appdata configuration switch to change
|
|
|
|
|
the default location of the datadir on win32 from APPDATA to
|
|
|
|
|
LOCAL_APPDATA. In the future, we should migrate to LOCAL_APPDATA
|
|
|
|
|
entirely. Patch from coderman.
|
|
|
|
|
- Build correctly against versions of OpenSSL 0.9.8 or later that
|
|
|
|
|
are built without support for deprecated functions.
|
|
|
|
|
- On platforms with a maximum syslog string length, truncate syslog
|
|
|
|
|
messages to that length ourselves, rather than relying on the
|
|
|
|
|
system to do it for us.
|
|
|
|
|
- Automatically detect MacOSX versions earlier than 10.4.0, and
|
|
|
|
|
disable kqueue from inside Tor when running with these versions.
|
|
|
|
|
We previously did this from the startup script, but that was no
|
|
|
|
|
help to people who didn't use the startup script. Resolves bug 863.
|
|
|
|
|
- Build correctly when configured to build outside the main source
|
|
|
|
|
path. Patch from Michael Gold.
|
|
|
|
|
- Disable GCC's strict alias optimization by default, to avoid the
|
|
|
|
|
likelihood of its introducing subtle bugs whenever our code violates
|
|
|
|
|
the letter of C99's alias rules.
|
|
|
|
|
- Change the contrib/tor.logrotate script so it makes the new
|
|
|
|
|
logs as "_tor:_tor" rather than the default, which is generally
|
|
|
|
|
"root:wheel". Fixes bug 676, reported by Serge Koksharov.
|
|
|
|
|
- Change our header file guard macros to be less likely to conflict
|
|
|
|
|
with system headers. Adam Langley noticed that we were conflicting
|
|
|
|
|
with log.h on Android.
|
|
|
|
|
- Add a couple of extra warnings to --enable-gcc-warnings for GCC 4.3,
|
|
|
|
|
and stop using a warning that had become unfixably verbose under
|
|
|
|
|
GCC 4.3.
|
|
|
|
|
- Use a lockfile to make sure that two Tor processes are not
|
|
|
|
|
simultaneously running with the same datadir.
|
|
|
|
|
- Allow OpenSSL to use dynamic locks if it wants.
|
|
|
|
|
- Add LIBS=-lrt to Makefile.am so the Tor RPMs use a static libevent.
|
|
|
|
|
|
|
|
|
|
o Minor features (controllers):
|
|
|
|
|
- When generating circuit events with verbose nicknames for
|
|
|
|
|
controllers, try harder to look up nicknames for routers on a
|
|
|
|
|
circuit. (Previously, we would look in the router descriptors we had
|
|
|
|
|
for nicknames, but not in the consensus.) Partial fix for bug 941.
|
|
|
|
|
- New controller event NEWCONSENSUS that lists the networkstatus
|
|
|
|
|
lines for every recommended relay. Now controllers like Torflow
|
|
|
|
|
can keep up-to-date on which relays they should be using.
|
|
|
|
|
- New controller event "clients_seen" to report a geoip-based summary
|
|
|
|
|
of which countries we've seen clients from recently. Now controllers
|
|
|
|
|
like Vidalia can show bridge operators that they're actually making
|
|
|
|
|
a difference.
|
|
|
|
|
- Add a 'getinfo status/clients-seen' controller command, in case
|
|
|
|
|
controllers want to hear clients_seen events but connect late.
|
|
|
|
|
- New CONSENSUS_ARRIVED event to note when a new consensus has
|
|
|
|
|
been fetched and validated.
|
|
|
|
|
- Add an internal-use-only __ReloadTorrcOnSIGHUP option for
|
|
|
|
|
controllers to prevent SIGHUP from reloading the configuration.
|
|
|
|
|
Fixes bug 856.
|
|
|
|
|
- Return circuit purposes in response to GETINFO circuit-status.
|
|
|
|
|
Fixes bug 858.
|
|
|
|
|
- Serve the latest v3 networkstatus consensus via the control
|
|
|
|
|
port. Use "getinfo dir/status-vote/current/consensus" to fetch it.
|
|
|
|
|
- Add a "GETINFO /status/bootstrap-phase" controller option, so the
|
|
|
|
|
controller can query our current bootstrap state in case it attaches
|
|
|
|
|
partway through and wants to catch up.
|
|
|
|
|
- Provide circuit purposes along with circuit events to the controller.
|
|
|
|
|
|
|
|
|
|
o Minor features (tools):
|
|
|
|
|
- Do not have tor-resolve automatically refuse all .onion addresses;
|
|
|
|
|
if AutomapHostsOnResolve is set in your torrc, this will work fine.
|
|
|
|
|
- Add a -p option to tor-resolve for specifying the SOCKS port: some
|
|
|
|
|
people find host:port too confusing.
|
|
|
|
|
- Print the SOCKS5 error message string as well as the error code
|
|
|
|
|
when a tor-resolve request fails. Patch from Jacob.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (memory and resource management):
|
|
|
|
|
- Clients no longer cache certificates for authorities they do not
|
|
|
|
|
recognize. Bugfix on 0.2.0.9-alpha.
|
|
|
|
|
- Do not use C's stdio library for writing to log files. This will
|
|
|
|
|
improve logging performance by a minute amount, and will stop
|
|
|
|
|
leaking fds when our disk is full. Fixes bug 861.
|
|
|
|
|
- Stop erroneous use of O_APPEND in cases where we did not in fact
|
|
|
|
|
want to re-seek to the end of a file before every last write().
|
|
|
|
|
- Fix a small alignment and memory-wasting bug on buffer chunks.
|
|
|
|
|
Spotted by rovv.
|
|
|
|
|
- Add a malloc_good_size implementation to OpenBSD_malloc_linux.c,
|
|
|
|
|
to avoid unused RAM in buffer chunks and memory pools.
|
|
|
|
|
- Reduce the default smartlist size from 32 to 16; it turns out that
|
|
|
|
|
most smartlists hold around 8-12 elements tops.
|
|
|
|
|
- Make dumpstats() log the fullness and size of openssl-internal
|
|
|
|
|
buffers.
|
|
|
|
|
- If the user has applied the experimental SSL_MODE_RELEASE_BUFFERS
|
|
|
|
|
patch to their OpenSSL, turn it on to save memory on servers. This
|
|
|
|
|
patch will (with any luck) get included in a mainline distribution
|
|
|
|
|
before too long.
|
|
|
|
|
- Fix a memory leak when v3 directory authorities load their keys
|
|
|
|
|
and cert from disk. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Stop using malloc_usable_size() to use more area than we had
|
|
|
|
|
actually allocated: it was safe, but made valgrind really unhappy.
|
|
|
|
|
- Make the assert_circuit_ok() function work correctly on circuits that
|
|
|
|
|
have already been marked for close.
|
|
|
|
|
- Fix uninitialized size field for memory area allocation: may improve
|
|
|
|
|
memory performance during directory parsing.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (clients):
|
|
|
|
|
- Stop reloading the router list from disk for no reason when we
|
|
|
|
|
run out of reachable directory mirrors. Once upon a time reloading
|
|
|
|
|
it would set the 'is_running' flag back to 1 for them. It hasn't
|
|
|
|
|
done that for a long time.
|
|
|
|
|
- When we had picked an exit node for a connection, but marked it as
|
|
|
|
|
"optional", and it turned out we had no onion key for the exit,
|
|
|
|
|
stop wanting that exit and try again. This situation may not
|
|
|
|
|
be possible now, but will probably become feasible with proposal
|
|
|
|
|
158. Spotted by rovv. Fixes another case of bug 752.
|
|
|
|
|
- Fix a bug in address parsing that was preventing bridges or hidden
|
|
|
|
|
service targets from being at IPv6 addresses.
|
|
|
|
|
- Do not remove routers as too old if we do not have any consensus
|
|
|
|
|
document. Bugfix on 0.2.0.7-alpha.
|
|
|
|
|
- When an exit relay resolves a stream address to a local IP address,
|
|
|
|
|
do not just keep retrying that same exit relay over and
|
|
|
|
|
over. Instead, just close the stream. Addresses bug 872. Bugfix
|
|
|
|
|
on 0.2.0.32. Patch from rovv.
|
|
|
|
|
- Made Tor a little less aggressive about deleting expired
|
|
|
|
|
certificates. Partial fix for bug 854.
|
|
|
|
|
- Treat duplicate certificate fetches as failures, so that we do
|
|
|
|
|
not try to re-fetch an expired certificate over and over and over.
|
|
|
|
|
- Do not say we're fetching a certificate when we'll in fact skip it
|
|
|
|
|
because of a pending download.
|
|
|
|
|
- If we have correct permissions on $datadir, we complain to stdout
|
|
|
|
|
and fail to start. But dangerous permissions on
|
|
|
|
|
$datadir/cached-status/ would cause us to open a log and complain
|
|
|
|
|
there. Now complain to stdout and fail to start in both cases. Fixes
|
|
|
|
|
bug 820, reported by seeess.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (bridges):
|
|
|
|
|
- When we made bridge authorities stop serving bridge descriptors over
|
|
|
|
|
unencrypted links, we also broke DirPort reachability testing for
|
|
|
|
|
bridges. So bridges with a non-zero DirPort were printing spurious
|
|
|
|
|
warns to their logs. Bugfix on 0.2.0.16-alpha. Fixes bug 709.
|
|
|
|
|
- Don't allow a bridge to publish its router descriptor to a
|
|
|
|
|
non-bridge directory authority. Fixes part of bug 932.
|
|
|
|
|
- When we change to or from being a bridge, reset our counts of
|
|
|
|
|
client usage by country. Fixes bug 932.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (relays):
|
|
|
|
|
- Log correct error messages for DNS-related network errors on
|
|
|
|
|
Windows.
|
|
|
|
|
- Actually return -1 in the error case for read_bandwidth_usage().
|
|
|
|
|
Harmless bug, since we currently don't care about the return value
|
|
|
|
|
anywhere. Bugfix on 0.2.0.9-alpha.
|
|
|
|
|
- Provide a more useful log message if bug 977 (related to buffer
|
|
|
|
|
freelists) ever reappears, and do not crash right away.
|
|
|
|
|
- We were already rejecting relay begin cells with destination port
|
|
|
|
|
of 0. Now also reject extend cells with destination port or address
|
|
|
|
|
of 0. Suggested by lark.
|
|
|
|
|
- When we can't transmit a DNS request due to a network error, retry
|
|
|
|
|
it after a while, and eventually transmit a failing response to
|
|
|
|
|
the RESOLVED cell. Bugfix on 0.1.2.5-alpha.
|
|
|
|
|
- Solve a bug that kept hardware crypto acceleration from getting
|
|
|
|
|
enabled when accounting was turned on. Fixes bug 907. Bugfix on
|
|
|
|
|
0.0.9pre6.
|
|
|
|
|
- When a canonical connection appears later in our internal list
|
|
|
|
|
than a noncanonical one for a given OR ID, always use the
|
|
|
|
|
canonical one. Bugfix on 0.2.0.12-alpha. Fixes bug 805.
|
|
|
|
|
Spotted by rovv.
|
|
|
|
|
- Avoid some nasty corner cases in the logic for marking connections
|
|
|
|
|
as too old or obsolete or noncanonical for circuits. Partial
|
|
|
|
|
bugfix on bug 891.
|
|
|
|
|
- Fix another interesting corner-case of bug 891 spotted by rovv:
|
|
|
|
|
Previously, if two hosts had different amounts of clock drift, and
|
|
|
|
|
one of them created a new connection with just the wrong timing,
|
|
|
|
|
the other might decide to deprecate the new connection erroneously.
|
|
|
|
|
Bugfix on 0.1.1.13-alpha.
|
|
|
|
|
- If one win32 nameserver fails to get added, continue adding the
|
|
|
|
|
rest, and don't automatically fail.
|
|
|
|
|
- Fix a bug where an unreachable relay would establish enough
|
|
|
|
|
reachability testing circuits to do a bandwidth test -- if
|
|
|
|
|
we already have a connection to the middle hop of the testing
|
|
|
|
|
circuit, then it could establish the last hop by using the existing
|
|
|
|
|
connection. Bugfix on 0.1.2.2-alpha, exposed when we made testing
|
|
|
|
|
circuits no longer use entry guards in 0.2.1.3-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (directory authorities):
|
|
|
|
|
- Limit uploaded directory documents to be 16M rather than 500K.
|
|
|
|
|
The directory authorities were refusing v3 consensus votes from
|
|
|
|
|
other authorities, since the votes are now 504K. Fixes bug 959;
|
|
|
|
|
bugfix on 0.0.2pre17 (where we raised it from 50K to 500K ;).
|
|
|
|
|
- Directory authorities should never send a 503 "busy" response to
|
|
|
|
|
requests for votes or keys. Bugfix on 0.2.0.8-alpha; exposed by
|
|
|
|
|
bug 959.
|
|
|
|
|
- Fix code so authorities _actually_ send back X-Descriptor-Not-New
|
|
|
|
|
headers. Bugfix on 0.2.0.10-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (hidden services):
|
|
|
|
|
- When we can't find an intro key for a v2 hidden service descriptor,
|
|
|
|
|
fall back to the v0 hidden service descriptor and log a bug message.
|
|
|
|
|
Workaround for bug 1024.
|
|
|
|
|
- In very rare situations new hidden service descriptors were
|
|
|
|
|
published earlier than 30 seconds after the last change to the
|
|
|
|
|
service. (We currently think that a hidden service descriptor
|
|
|
|
|
that's been stable for 30 seconds is worth publishing.)
|
|
|
|
|
- If a hidden service sends us an END cell, do not consider
|
|
|
|
|
retrying the connection; just close it. Patch from rovv.
|
|
|
|
|
- If we are not using BEGIN_DIR cells, don't attempt to contact hidden
|
|
|
|
|
service directories if they have no advertised dir port. Bugfix
|
|
|
|
|
on 0.2.0.10-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (tools):
|
|
|
|
|
- In the torify(1) manpage, mention that tsocks will leak your
|
|
|
|
|
DNS requests.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (controllers):
|
|
|
|
|
- If the controller claimed responsibility for a stream, but that
|
|
|
|
|
stream never finished making its connection, it would live
|
|
|
|
|
forever in circuit_wait state. Now we close it after SocksTimeout
|
|
|
|
|
seconds. Bugfix on 0.1.2.7-alpha; reported by Mike Perry.
|
|
|
|
|
- Make DNS resolved controller events into "CLOSED", not
|
|
|
|
|
"FAILED". Bugfix on 0.1.2.5-alpha. Fix by Robert Hogan. Resolves
|
|
|
|
|
bug 807.
|
|
|
|
|
- The control port would close the connection before flushing long
|
|
|
|
|
replies, such as the network consensus, if a QUIT command was issued
|
|
|
|
|
before the reply had completed. Now, the control port flushes all
|
|
|
|
|
pending replies before closing the connection. Also fix a spurious
|
|
|
|
|
warning when a QUIT command is issued after a malformed or rejected
|
|
|
|
|
AUTHENTICATE command, but before the connection was closed. Patch
|
|
|
|
|
by Marcus Griep. Fixes bugs 1015 and 1016.
|
|
|
|
|
- Fix a bug that made stream bandwidth get misreported to the
|
|
|
|
|
controller.
|
|
|
|
|
|
|
|
|
|
o Deprecated and removed features:
|
|
|
|
|
- The old "tor --version --version" command, which would print out
|
|
|
|
|
the subversion "Id" of most of the source files, is now removed. It
|
|
|
|
|
turned out to be less useful than we'd expected, and harder to
|
|
|
|
|
maintain.
|
|
|
|
|
- RedirectExits has been removed. It was deprecated since
|
|
|
|
|
0.2.0.3-alpha.
|
|
|
|
|
- Finally remove deprecated "EXTENDED_FORMAT" controller feature. It
|
|
|
|
|
has been called EXTENDED_EVENTS since 0.1.2.4-alpha.
|
|
|
|
|
- Cell pools are now always enabled; --disable-cell-pools is ignored.
|
|
|
|
|
- Directory mirrors no longer fetch the v1 directory or
|
|
|
|
|
running-routers files. They are obsolete, and nobody asks for them
|
|
|
|
|
anymore. This is the first step to making v1 authorities obsolete.
|
|
|
|
|
- Take out the TestVia config option, since it was a workaround for
|
|
|
|
|
a bug that was fixed in Tor 0.1.1.21.
|
|
|
|
|
- Mark RendNodes, RendExcludeNodes, HiddenServiceNodes, and
|
|
|
|
|
HiddenServiceExcludeNodes as obsolete: they never worked properly,
|
|
|
|
|
and nobody seems to be using them. Fixes bug 754. Bugfix on
|
|
|
|
|
0.1.0.1-rc. Patch from Christian Wilms.
|
|
|
|
|
- Remove all backward-compatibility code for relays running
|
|
|
|
|
versions of Tor so old that they no longer work at all on the
|
|
|
|
|
Tor network.
|
|
|
|
|
|
|
|
|
|
o Code simplifications and refactoring:
|
|
|
|
|
- Tool-assisted documentation cleanup. Nearly every function or
|
|
|
|
|
static variable in Tor should have its own documentation now.
|
|
|
|
|
- Rename the confusing or_is_obsolete field to the more appropriate
|
|
|
|
|
is_bad_for_new_circs, and move it to or_connection_t where it
|
|
|
|
|
belongs.
|
|
|
|
|
- Move edge-only flags from connection_t to edge_connection_t: not
|
|
|
|
|
only is this better coding, but on machines of plausible alignment,
|
|
|
|
|
it should save 4-8 bytes per connection_t. "Every little bit helps."
|
|
|
|
|
- Rename ServerDNSAllowBrokenResolvConf to ServerDNSAllowBrokenConfig
|
|
|
|
|
for consistency; keep old option working for backward compatibility.
|
|
|
|
|
- Simplify the code for finding connections to use for a circuit.
|
|
|
|
|
- Revise the connection_new functions so that a more typesafe variant
|
|
|
|
|
exists. This will work better with Coverity, and let us find any
|
|
|
|
|
actual mistakes we're making here.
|
|
|
|
|
- Refactor unit testing logic so that dmalloc can be used sensibly
|
|
|
|
|
with unit tests to check for memory leaks.
|
|
|
|
|
- Move all hidden-service related fields from connection and circuit
|
|
|
|
|
structure to substructures: this way they won't eat so much memory.
|
|
|
|
|
- Squeeze 2-5% out of client performance (according to oprofile) by
|
|
|
|
|
improving the implementation of some policy-manipulation functions.
|
|
|
|
|
- Change the implementation of ExcludeNodes and ExcludeExitNodes to
|
|
|
|
|
be more efficient. Formerly it was quadratic in the number of
|
|
|
|
|
servers; now it should be linear. Fixes bug 509.
|
|
|
|
|
- Save 16-22 bytes per open circuit by moving the n_addr, n_port,
|
|
|
|
|
and n_conn_id_digest fields into a separate structure that's
|
|
|
|
|
only needed when the circuit has not yet attached to an n_conn.
|
|
|
|
|
- Optimize out calls to time(NULL) that occur for every IO operation,
|
|
|
|
|
or for every cell. On systems like Windows where time() is a
|
|
|
|
|
slow syscall, this fix will be slightly helpful.
|
|
|
|
|
|
|
|
|
|
|
2009-07-24 22:54:54 +02:00
|
|
|
Changes in version 0.2.0.35 - 2009-06-24
|
|
|
|
|
o Security fix:
|
|
|
|
|
- Avoid crashing in the presence of certain malformed descriptors.
|
|
|
|
|
Found by lark, and by automated fuzzing.
|
|
|
|
|
- Fix an edge case where a malicious exit relay could convince a
|
|
|
|
|
controller that the client's DNS question resolves to an internal IP
|
|
|
|
|
address. Bug found and fixed by "optimist"; bugfix on 0.1.2.8-beta.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Finally fix the bug where dynamic-IP relays disappear when their
|
|
|
|
|
IP address changes: directory mirrors were mistakenly telling
|
|
|
|
|
them their old address if they asked via begin_dir, so they
|
|
|
|
|
never got an accurate answer about their new address, so they
|
|
|
|
|
just vanished after a day. For belt-and-suspenders, relays that
|
|
|
|
|
don't set Address in their config now avoid using begin_dir for
|
|
|
|
|
all direct connections. Should fix bugs 827, 883, and 900.
|
|
|
|
|
- Fix a timing-dependent, allocator-dependent, DNS-related crash bug
|
|
|
|
|
that would occur on some exit nodes when DNS failures and timeouts
|
|
|
|
|
occurred in certain patterns. Fix for bug 957.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- When starting with a cache over a few days old, do not leak
|
|
|
|
|
memory for the obsolete router descriptors in it. Bugfix on
|
|
|
|
|
0.2.0.33; fixes bug 672.
|
|
|
|
|
- Hidden service clients didn't use a cached service descriptor that
|
|
|
|
|
was older than 15 minutes, but wouldn't fetch a new one either,
|
|
|
|
|
because there was already one in the cache. Now, fetch a v2
|
|
|
|
|
descriptor unless the same descriptor was added to the cache within
|
|
|
|
|
the last 15 minutes. Fixes bug 997; reported by Marcus Griep.
|
|
|
|
|
|
|
|
|
|
|
2009-02-11 23:21:50 +01:00
|
|
|
Changes in version 0.2.0.34 - 2009-02-08
|
|
|
|
|
Tor 0.2.0.34 features several more security-related fixes. You should
|
|
|
|
|
upgrade, especially if you run an exit relay (remote crash) or a
|
|
|
|
|
directory authority (remote infinite loop), or you're on an older
|
|
|
|
|
(pre-XP) or not-recently-patched Windows (remote exploit).
|
|
|
|
|
|
|
|
|
|
This release marks end-of-life for Tor 0.1.2.x. Those Tor versions
|
|
|
|
|
have many known flaws, and nobody should be using them. You should
|
|
|
|
|
upgrade. If you're using a Linux or BSD and its packages are obsolete,
|
|
|
|
|
stop using those packages and upgrade anyway.
|
|
|
|
|
|
|
|
|
|
o Security fixes:
|
|
|
|
|
- Fix an infinite-loop bug on handling corrupt votes under certain
|
|
|
|
|
circumstances. Bugfix on 0.2.0.8-alpha.
|
|
|
|
|
- Fix a temporary DoS vulnerability that could be performed by
|
|
|
|
|
a directory mirror. Bugfix on 0.2.0.9-alpha; reported by lark.
|
|
|
|
|
- Avoid a potential crash on exit nodes when processing malformed
|
|
|
|
|
input. Remote DoS opportunity. Bugfix on 0.2.0.33.
|
|
|
|
|
- Do not accept incomplete ipv4 addresses (like 192.168.0) as valid.
|
|
|
|
|
Spec conformance issue. Bugfix on Tor 0.0.2pre27.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix compilation on systems where time_t is a 64-bit integer.
|
|
|
|
|
Patch from Matthias Drochner.
|
|
|
|
|
- Don't consider expiring already-closed client connections. Fixes
|
|
|
|
|
bug 893. Bugfix on 0.0.2pre20.
|
|
|
|
|
|
|
|
|
|
|
2009-02-04 16:20:50 +01:00
|
|
|
Changes in version 0.2.0.33 - 2009-01-21
|
|
|
|
|
Tor 0.2.0.33 fixes a variety of bugs that were making relays less
|
|
|
|
|
useful to users. It also finally fixes a bug where a relay or client
|
|
|
|
|
that's been off for many days would take a long time to bootstrap.
|
|
|
|
|
|
|
|
|
|
This update also fixes an important security-related bug reported by
|
|
|
|
|
Ilja van Sprundel. You should upgrade. (We'll send out more details
|
|
|
|
|
about the bug once people have had some time to upgrade.)
|
|
|
|
|
|
|
|
|
|
o Security fixes:
|
|
|
|
|
- Fix a heap-corruption bug that may be remotely triggerable on
|
|
|
|
|
some platforms. Reported by Ilja van Sprundel.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- When a stream at an exit relay is in state "resolving" or
|
|
|
|
|
"connecting" and it receives an "end" relay cell, the exit relay
|
|
|
|
|
would silently ignore the end cell and not close the stream. If
|
|
|
|
|
the client never closes the circuit, then the exit relay never
|
|
|
|
|
closes the TCP connection. Bug introduced in Tor 0.1.2.1-alpha;
|
|
|
|
|
reported by "wood".
|
|
|
|
|
- When sending CREATED cells back for a given circuit, use a 64-bit
|
|
|
|
|
connection ID to find the right connection, rather than an addr:port
|
|
|
|
|
combination. Now that we can have multiple OR connections between
|
|
|
|
|
the same ORs, it is no longer possible to use addr:port to uniquely
|
|
|
|
|
identify a connection.
|
|
|
|
|
- Bridge relays that had DirPort set to 0 would stop fetching
|
|
|
|
|
descriptors shortly after startup, and then briefly resume
|
|
|
|
|
after a new bandwidth test and/or after publishing a new bridge
|
|
|
|
|
descriptor. Bridge users that try to bootstrap from them would
|
|
|
|
|
get a recent networkstatus but would get descriptors from up to
|
|
|
|
|
18 hours earlier, meaning most of the descriptors were obsolete
|
|
|
|
|
already. Reported by Tas; bugfix on 0.2.0.13-alpha.
|
|
|
|
|
- Prevent bridge relays from serving their 'extrainfo' document
|
|
|
|
|
to anybody who asks, now that extrainfo docs include potentially
|
|
|
|
|
sensitive aggregated client geoip summaries. Bugfix on
|
|
|
|
|
0.2.0.13-alpha.
|
|
|
|
|
- If the cached networkstatus consensus is more than five days old,
|
|
|
|
|
discard it rather than trying to use it. In theory it could be
|
|
|
|
|
useful because it lists alternate directory mirrors, but in practice
|
|
|
|
|
it just means we spend many minutes trying directory mirrors that
|
|
|
|
|
are long gone from the network. Also discard router descriptors as
|
|
|
|
|
we load them if they are more than five days old, since the onion
|
|
|
|
|
key is probably wrong by now. Bugfix on 0.2.0.x. Fixes bug 887.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Do not mark smartlist_bsearch_idx() function as ATTR_PURE. This bug
|
|
|
|
|
could make gcc generate non-functional binary search code. Bugfix
|
|
|
|
|
on 0.2.0.10-alpha.
|
|
|
|
|
- Build correctly on platforms without socklen_t.
|
|
|
|
|
- Compile without warnings on solaris.
|
|
|
|
|
- Avoid potential crash on internal error during signature collection.
|
|
|
|
|
Fixes bug 864. Patch from rovv.
|
|
|
|
|
- Correct handling of possible malformed authority signing key
|
|
|
|
|
certificates with internal signature types. Fixes bug 880.
|
|
|
|
|
Bugfix on 0.2.0.3-alpha.
|
|
|
|
|
- Fix a hard-to-trigger resource leak when logging credential status.
|
|
|
|
|
CID 349.
|
|
|
|
|
- When we can't initialize DNS because the network is down, do not
|
|
|
|
|
automatically stop Tor from starting. Instead, we retry failed
|
|
|
|
|
dns_init() every 10 minutes, and change the exit policy to reject
|
|
|
|
|
*:* until one succeeds. Fixes bug 691.
|
|
|
|
|
- Use 64 bits instead of 32 bits for connection identifiers used with
|
|
|
|
|
the controller protocol, to greatly reduce risk of identifier reuse.
|
|
|
|
|
- When we're choosing an exit node for a circuit, and we have
|
|
|
|
|
no pending streams, choose a good general exit rather than one that
|
|
|
|
|
supports "all the pending streams". Bugfix on 0.1.1.x. Fix by rovv.
|
|
|
|
|
- Fix another case of assuming, when a specific exit is requested,
|
|
|
|
|
that we know more than the user about what hosts it allows.
|
|
|
|
|
Fixes one case of bug 752. Patch from rovv.
|
|
|
|
|
- Clip the MaxCircuitDirtiness config option to a minimum of 10
|
|
|
|
|
seconds. Warn the user if lower values are given in the
|
|
|
|
|
configuration. Bugfix on 0.1.0.1-rc. Patch by Sebastian.
|
|
|
|
|
- Clip the CircuitBuildTimeout to a minimum of 30 seconds. Warn the
|
|
|
|
|
user if lower values are given in the configuration. Bugfix on
|
|
|
|
|
0.1.1.17-rc. Patch by Sebastian.
|
|
|
|
|
- Fix a memory leak when we decline to add a v2 rendezvous descriptor to
|
|
|
|
|
the cache because we already had a v0 descriptor with the same ID.
|
|
|
|
|
Bugfix on 0.2.0.18-alpha.
|
|
|
|
|
- Fix a race condition when freeing keys shared between main thread
|
|
|
|
|
and CPU workers that could result in a memory leak. Bugfix on
|
|
|
|
|
0.1.0.1-rc. Fixes bug 889.
|
|
|
|
|
- Send a valid END cell back when a client tries to connect to a
|
|
|
|
|
nonexistent hidden service port. Bugfix on 0.1.2.15. Fixes bug
|
|
|
|
|
840. Patch from rovv.
|
|
|
|
|
- Check which hops rendezvous stream cells are associated with to
|
|
|
|
|
prevent possible guess-the-streamid injection attacks from
|
|
|
|
|
intermediate hops. Fixes another case of bug 446. Based on patch
|
|
|
|
|
from rovv.
|
|
|
|
|
- If a broken client asks a non-exit router to connect somewhere,
|
|
|
|
|
do not even do the DNS lookup before rejecting the connection.
|
|
|
|
|
Fixes another case of bug 619. Patch from rovv.
|
|
|
|
|
- When a relay gets a create cell it can't decrypt (e.g. because it's
|
|
|
|
|
using the wrong onion key), we were dropping it and letting the
|
|
|
|
|
client time out. Now actually answer with a destroy cell. Fixes
|
|
|
|
|
bug 904. Bugfix on 0.0.2pre8.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (hidden services):
|
|
|
|
|
- Do not throw away existing introduction points on SIGHUP. Bugfix on
|
|
|
|
|
0.0.6pre1. Patch by Karsten. Fixes bug 874.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- Report the case where all signatures in a detached set are rejected
|
|
|
|
|
differently than the case where there is an error handling the
|
|
|
|
|
detached set.
|
|
|
|
|
- When we realize that another process has modified our cached
|
|
|
|
|
descriptors, print out a more useful error message rather than
|
|
|
|
|
triggering an assertion. Fixes bug 885. Patch from Karsten.
|
|
|
|
|
- Implement the 0x20 hack to better resist DNS poisoning: set the
|
|
|
|
|
case on outgoing DNS requests randomly, and reject responses that do
|
|
|
|
|
not match the case correctly. This logic can be disabled with the
|
|
|
|
|
ServerDNSRamdomizeCase setting, if you are using one of the 0.3%
|
|
|
|
|
of servers that do not reliably preserve case in replies. See
|
|
|
|
|
"Increased DNS Forgery Resistance through 0x20-Bit Encoding"
|
|
|
|
|
for more info.
|
|
|
|
|
- Check DNS replies for more matching fields to better resist DNS
|
|
|
|
|
poisoning.
|
|
|
|
|
- Never use OpenSSL compression: it wastes RAM and CPU trying to
|
|
|
|
|
compress cells, which are basically all encrypted, compressed, or
|
|
|
|
|
both.
|
|
|
|
|
|
|
|
|
|
|
2008-11-22 06:14:12 +01:00
|
|
|
Changes in version 0.2.0.32 - 2008-11-20
|
2008-12-11 18:18:03 +01:00
|
|
|
Tor 0.2.0.32 fixes a major security problem in Debian and Ubuntu
|
|
|
|
|
packages (and maybe other packages) noticed by Theo de Raadt, fixes
|
|
|
|
|
a smaller security flaw that might allow an attacker to access local
|
|
|
|
|
services, further improves hidden service performance, and fixes a
|
|
|
|
|
variety of other issues.
|
|
|
|
|
|
2008-11-22 06:14:12 +01:00
|
|
|
o Security fixes:
|
|
|
|
|
- The "User" and "Group" config options did not clear the
|
|
|
|
|
supplementary group entries for the Tor process. The "User" option
|
|
|
|
|
is now more robust, and we now set the groups to the specified
|
|
|
|
|
user's primary group. The "Group" option is now ignored. For more
|
|
|
|
|
detailed logging on credential switching, set CREDENTIAL_LOG_LEVEL
|
|
|
|
|
in common/compat.c to LOG_NOTICE or higher. Patch by Jacob Appelbaum
|
|
|
|
|
and Steven Murdoch. Bugfix on 0.0.2pre14. Fixes bug 848 and 857.
|
|
|
|
|
- The "ClientDNSRejectInternalAddresses" config option wasn't being
|
|
|
|
|
consistently obeyed: if an exit relay refuses a stream because its
|
|
|
|
|
exit policy doesn't allow it, we would remember what IP address
|
|
|
|
|
the relay said the destination address resolves to, even if it's
|
|
|
|
|
an internal IP address. Bugfix on 0.2.0.7-alpha; patch by rovv.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fix a DOS opportunity during the voting signature collection process
|
|
|
|
|
at directory authorities. Spotted by rovv. Bugfix on 0.2.0.x.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (hidden services):
|
|
|
|
|
- When fetching v0 and v2 rendezvous service descriptors in parallel,
|
|
|
|
|
we were failing the whole hidden service request when the v0
|
|
|
|
|
descriptor fetch fails, even if the v2 fetch is still pending and
|
|
|
|
|
might succeed. Similarly, if the last v2 fetch fails, we were
|
|
|
|
|
failing the whole hidden service request even if a v0 fetch is
|
|
|
|
|
still pending. Fixes bug 814. Bugfix on 0.2.0.10-alpha.
|
|
|
|
|
- When extending a circuit to a hidden service directory to upload a
|
|
|
|
|
rendezvous descriptor using a BEGIN_DIR cell, almost 1/6 of all
|
|
|
|
|
requests failed, because the router descriptor has not been
|
|
|
|
|
downloaded yet. In these cases, do not attempt to upload the
|
|
|
|
|
rendezvous descriptor, but wait until the router descriptor is
|
|
|
|
|
downloaded and retry. Likewise, do not attempt to fetch a rendezvous
|
|
|
|
|
descriptor from a hidden service directory for which the router
|
|
|
|
|
descriptor has not yet been downloaded. Fixes bug 767. Bugfix
|
|
|
|
|
on 0.2.0.10-alpha.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix several infrequent memory leaks spotted by Coverity.
|
|
|
|
|
- When testing for libevent functions, set the LDFLAGS variable
|
|
|
|
|
correctly. Found by Riastradh.
|
|
|
|
|
- Avoid a bug where the FastFirstHopPK 0 option would keep Tor from
|
|
|
|
|
bootstrapping with tunneled directory connections. Bugfix on
|
|
|
|
|
0.1.2.5-alpha. Fixes bug 797. Found by Erwin Lam.
|
|
|
|
|
- When asked to connect to A.B.exit:80, if we don't know the IP for A
|
|
|
|
|
and we know that server B rejects most-but-not all connections to
|
|
|
|
|
port 80, we would previously reject the connection. Now, we assume
|
|
|
|
|
the user knows what they were asking for. Fixes bug 752. Bugfix
|
|
|
|
|
on 0.0.9rc5. Diagnosed by BarkerJr.
|
|
|
|
|
- If we overrun our per-second write limits a little, count this as
|
|
|
|
|
having used up our write allocation for the second, and choke
|
|
|
|
|
outgoing directory writes. Previously, we had only counted this when
|
|
|
|
|
we had met our limits precisely. Fixes bug 824. Patch from by rovv.
|
|
|
|
|
Bugfix on 0.2.0.x (??).
|
|
|
|
|
- Remove the old v2 directory authority 'lefkada' from the default
|
|
|
|
|
list. It has been gone for many months.
|
|
|
|
|
- Stop doing unaligned memory access that generated bus errors on
|
|
|
|
|
sparc64. Bugfix on 0.2.0.10-alpha. Fixes bug 862.
|
|
|
|
|
- Make USR2 log-level switch take effect immediately. Bugfix on
|
|
|
|
|
0.1.2.8-beta.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (controller):
|
|
|
|
|
- Make DNS resolved events into "CLOSED", not "FAILED". Bugfix on
|
|
|
|
|
0.1.2.5-alpha. Fix by Robert Hogan. Resolves bug 807.
|
|
|
|
|
|
|
|
|
|
|
2008-09-08 21:50:29 +02:00
|
|
|
Changes in version 0.2.0.31 - 2008-09-03
|
|
|
|
|
Tor 0.2.0.31 addresses two potential anonymity issues, starts to fix
|
|
|
|
|
a big bug we're seeing where in rare cases traffic from one Tor stream
|
|
|
|
|
gets mixed into another stream, and fixes a variety of smaller issues.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Make sure that two circuits can never exist on the same connection
|
|
|
|
|
with the same circuit ID, even if one is marked for close. This
|
|
|
|
|
is conceivably a bugfix for bug 779. Bugfix on 0.1.0.4-rc.
|
|
|
|
|
- Relays now reject risky extend cells: if the extend cell includes
|
|
|
|
|
a digest of all zeroes, or asks to extend back to the relay that
|
|
|
|
|
sent the extend cell, tear down the circuit. Ideas suggested
|
|
|
|
|
by rovv.
|
|
|
|
|
- If not enough of our entry guards are available so we add a new
|
|
|
|
|
one, we might use the new one even if it overlapped with the
|
|
|
|
|
current circuit's exit relay (or its family). Anonymity bugfix
|
|
|
|
|
pointed out by rovv.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Recover 3-7 bytes that were wasted per memory chunk. Fixes bug
|
|
|
|
|
794; bug spotted by rovv. Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- Correctly detect the presence of the linux/netfilter_ipv4.h header
|
|
|
|
|
when building against recent kernels. Bugfix on 0.1.2.1-alpha.
|
|
|
|
|
- Pick size of default geoip filename string correctly on windows.
|
|
|
|
|
Fixes bug 806. Bugfix on 0.2.0.30.
|
|
|
|
|
- Make the autoconf script accept the obsolete --with-ssl-dir
|
|
|
|
|
option as an alias for the actually-working --with-openssl-dir
|
|
|
|
|
option. Fix the help documentation to recommend --with-openssl-dir.
|
|
|
|
|
Based on a patch by "Dave". Bugfix on 0.2.0.1-alpha.
|
|
|
|
|
- When using the TransPort option on OpenBSD, and using the User
|
|
|
|
|
option to change UID and drop privileges, make sure to open
|
|
|
|
|
/dev/pf before dropping privileges. Fixes bug 782. Patch from
|
|
|
|
|
Christopher Davis. Bugfix on 0.1.2.1-alpha.
|
|
|
|
|
- Try to attach connections immediately upon receiving a RENDEZVOUS2
|
|
|
|
|
or RENDEZVOUS_ESTABLISHED cell. This can save a second or two
|
|
|
|
|
on the client side when connecting to a hidden service. Bugfix
|
|
|
|
|
on 0.0.6pre1. Found and fixed by Christian Wilms; resolves bug 743.
|
|
|
|
|
- When closing an application-side connection because its circuit is
|
|
|
|
|
getting torn down, generate the stream event correctly. Bugfix on
|
|
|
|
|
0.1.2.x. Anonymous patch.
|
|
|
|
|
|
|
|
|
|
|
2008-07-16 02:04:00 +02:00
|
|
|
Changes in version 0.2.0.30 - 2008-07-15
|
2008-07-01 00:01:17 +02:00
|
|
|
This new stable release switches to a more efficient directory
|
2008-07-16 02:04:00 +02:00
|
|
|
distribution design, adds features to make connections to the Tor
|
|
|
|
|
network harder to block, allows Tor to act as a DNS proxy, adds separate
|
|
|
|
|
rate limiting for relayed traffic to make it easier for clients to
|
2008-08-31 08:26:36 +02:00
|
|
|
become relays, fixes a variety of potential anonymity problems, and
|
2008-07-16 02:04:00 +02:00
|
|
|
includes the usual huge pile of other features and bug fixes.
|
2008-07-01 00:01:17 +02:00
|
|
|
|
|
|
|
|
o New v3 directory design:
|
|
|
|
|
- Tor now uses a new way to learn about and distribute information
|
|
|
|
|
about the network: the directory authorities vote on a common
|
|
|
|
|
network status document rather than each publishing their own
|
|
|
|
|
opinion. Now clients and caches download only one networkstatus
|
|
|
|
|
document to bootstrap, rather than downloading one for each
|
|
|
|
|
authority. Clients only download router descriptors listed in
|
|
|
|
|
the consensus. Implements proposal 101; see doc/spec/dir-spec.txt
|
|
|
|
|
for details.
|
|
|
|
|
- Set up moria1, tor26, and dizum as v3 directory authorities
|
|
|
|
|
in addition to being v2 authorities. Also add three new ones:
|
|
|
|
|
ides (run by Mike Perry), gabelmoo (run by Karsten Loesing), and
|
|
|
|
|
dannenberg (run by CCC).
|
|
|
|
|
- Switch to multi-level keys for directory authorities: now their
|
|
|
|
|
long-term identity key can be kept offline, and they periodically
|
|
|
|
|
generate a new signing key. Clients fetch the "key certificates"
|
|
|
|
|
to keep up to date on the right keys. Add a standalone tool
|
|
|
|
|
"tor-gencert" to generate key certificates. Implements proposal 103.
|
|
|
|
|
- Add a new V3AuthUseLegacyKey config option to make it easier for
|
|
|
|
|
v3 authorities to change their identity keys if another bug like
|
|
|
|
|
Debian's OpenSSL RNG flaw appears.
|
|
|
|
|
- Authorities and caches fetch the v2 networkstatus documents
|
|
|
|
|
less often, now that v3 is recommended.
|
|
|
|
|
|
|
|
|
|
o Make Tor connections stand out less on the wire:
|
|
|
|
|
- Use an improved TLS handshake designed by Steven Murdoch in proposal
|
|
|
|
|
124, as revised in proposal 130. The new handshake is meant to
|
|
|
|
|
be harder for censors to fingerprint, and it adds the ability
|
|
|
|
|
to detect certain kinds of man-in-the-middle traffic analysis
|
|
|
|
|
attacks. The new handshake format includes version negotiation for
|
|
|
|
|
OR connections as described in proposal 105, which will allow us
|
|
|
|
|
to improve Tor's link protocol more safely in the future.
|
|
|
|
|
- Enable encrypted directory connections by default for non-relays,
|
|
|
|
|
so censor tools that block Tor directory connections based on their
|
|
|
|
|
plaintext patterns will no longer work. This means Tor works in
|
|
|
|
|
certain censored countries by default again.
|
|
|
|
|
- Stop including recognizeable strings in the commonname part of
|
|
|
|
|
Tor's x509 certificates.
|
|
|
|
|
|
|
|
|
|
o Implement bridge relays:
|
|
|
|
|
- Bridge relays (or "bridges" for short) are Tor relays that aren't
|
|
|
|
|
listed in the main Tor directory. Since there is no complete public
|
|
|
|
|
list of them, even an ISP that is filtering connections to all the
|
|
|
|
|
known Tor relays probably won't be able to block all the bridges.
|
|
|
|
|
See doc/design-paper/blocking.pdf and proposal 125 for details.
|
|
|
|
|
- New config option BridgeRelay that specifies you want to be a
|
|
|
|
|
bridge relay rather than a normal relay. When BridgeRelay is set
|
|
|
|
|
to 1, then a) you cache dir info even if your DirPort ins't on,
|
|
|
|
|
and b) the default for PublishServerDescriptor is now "bridge"
|
|
|
|
|
rather than "v2,v3".
|
|
|
|
|
- New config option "UseBridges 1" for clients that want to use bridge
|
|
|
|
|
relays instead of ordinary entry guards. Clients then specify
|
|
|
|
|
bridge relays by adding "Bridge" lines to their config file. Users
|
|
|
|
|
can learn about a bridge relay either manually through word of
|
|
|
|
|
mouth, or by one of our rate-limited mechanisms for giving out
|
|
|
|
|
bridge addresses without letting an attacker easily enumerate them
|
|
|
|
|
all. See https://www.torproject.org/bridges for details.
|
|
|
|
|
- Bridge relays behave like clients with respect to time intervals
|
|
|
|
|
for downloading new v3 consensus documents -- otherwise they
|
|
|
|
|
stand out. Bridge users now wait until the end of the interval,
|
|
|
|
|
so their bridge relay will be sure to have a new consensus document.
|
|
|
|
|
|
|
|
|
|
o Implement bridge directory authorities:
|
|
|
|
|
- Bridge authorities are like normal directory authorities, except
|
|
|
|
|
they don't serve a list of known bridges. Therefore users that know
|
|
|
|
|
a bridge's fingerprint can fetch a relay descriptor for that bridge,
|
|
|
|
|
including fetching updates e.g. if the bridge changes IP address,
|
|
|
|
|
yet an attacker can't just fetch a list of all the bridges.
|
|
|
|
|
- Set up Tonga as the default bridge directory authority.
|
|
|
|
|
- Bridge authorities refuse to serve bridge descriptors or other
|
|
|
|
|
bridge information over unencrypted connections (that is, when
|
|
|
|
|
responding to direct DirPort requests rather than begin_dir cells.)
|
|
|
|
|
- Bridge directory authorities do reachability testing on the
|
|
|
|
|
bridges they know. They provide router status summaries to the
|
|
|
|
|
controller via "getinfo ns/purpose/bridge", and also dump summaries
|
|
|
|
|
to a file periodically, so we can keep internal stats about which
|
|
|
|
|
bridges are functioning.
|
|
|
|
|
- If bridge users set the UpdateBridgesFromAuthority config option,
|
|
|
|
|
but the digest they ask for is a 404 on the bridge authority,
|
|
|
|
|
they fall back to contacting the bridge directly.
|
|
|
|
|
- Bridges always use begin_dir to publish their server descriptor to
|
|
|
|
|
the bridge authority using an anonymous encrypted tunnel.
|
|
|
|
|
- Early work on a "bridge community" design: if bridge authorities set
|
|
|
|
|
the BridgePassword config option, they will serve a snapshot of
|
|
|
|
|
known bridge routerstatuses from their DirPort to anybody who
|
|
|
|
|
knows that password. Unset by default.
|
|
|
|
|
- Tor now includes an IP-to-country GeoIP file, so bridge relays can
|
|
|
|
|
report sanitized aggregated summaries in their extra-info documents
|
|
|
|
|
privately to the bridge authority, listing which countries are
|
|
|
|
|
able to reach them. We hope this mechanism will let us learn when
|
|
|
|
|
certain countries start trying to block bridges.
|
|
|
|
|
- Bridge authorities write bridge descriptors to disk, so they can
|
|
|
|
|
reload them after a reboot. They can also export the descriptors
|
|
|
|
|
to other programs, so we can distribute them to blocked users via
|
|
|
|
|
the BridgeDB interface, e.g. via https://bridges.torproject.org/
|
|
|
|
|
and bridges@torproject.org.
|
|
|
|
|
|
|
|
|
|
o Tor can be a DNS proxy:
|
|
|
|
|
- The new client-side DNS proxy feature replaces the need for
|
|
|
|
|
dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
|
|
|
|
|
for DNS requests on port 9999, use the Tor network to resolve them
|
|
|
|
|
anonymously, and send the reply back like a regular DNS server.
|
|
|
|
|
The code still only implements a subset of DNS.
|
|
|
|
|
- Add a new AutomapHostsOnResolve option: when it is enabled, any
|
|
|
|
|
resolve request for hosts matching a given pattern causes Tor to
|
|
|
|
|
generate an internal virtual address mapping for that host. This
|
|
|
|
|
allows DNSPort to work sensibly with hidden service users. By
|
|
|
|
|
default, .exit and .onion addresses are remapped; the list of
|
|
|
|
|
patterns can be reconfigured with AutomapHostsSuffixes.
|
|
|
|
|
- Add an "-F" option to tor-resolve to force a resolve for a .onion
|
|
|
|
|
address. Thanks to the AutomapHostsOnResolve option, this is no
|
|
|
|
|
longer a completely silly thing to do.
|
|
|
|
|
|
|
|
|
|
o Major features (relay usability):
|
|
|
|
|
- New config options RelayBandwidthRate and RelayBandwidthBurst:
|
|
|
|
|
a separate set of token buckets for relayed traffic. Right now
|
|
|
|
|
relayed traffic is defined as answers to directory requests, and
|
|
|
|
|
OR connections that don't have any local circuits on them. See
|
|
|
|
|
proposal 111 for details.
|
|
|
|
|
- Create listener connections before we setuid to the configured
|
|
|
|
|
User and Group. Now non-Windows users can choose port values
|
|
|
|
|
under 1024, start Tor as root, and have Tor bind those ports
|
|
|
|
|
before it changes to another UID. (Windows users could already
|
|
|
|
|
pick these ports.)
|
|
|
|
|
- Added a new ConstrainedSockets config option to set SO_SNDBUF and
|
|
|
|
|
SO_RCVBUF on TCP sockets. Hopefully useful for Tor servers running
|
|
|
|
|
on "vserver" accounts. Patch from coderman.
|
|
|
|
|
|
|
|
|
|
o Major features (directory authorities):
|
|
|
|
|
- Directory authorities track weighted fractional uptime and weighted
|
|
|
|
|
mean-time-between failures for relays. WFU is suitable for deciding
|
|
|
|
|
whether a node is "usually up", while MTBF is suitable for deciding
|
|
|
|
|
whether a node is "likely to stay up." We need both, because
|
|
|
|
|
"usually up" is a good requirement for guards, while "likely to
|
|
|
|
|
stay up" is a good requirement for long-lived connections.
|
|
|
|
|
- Directory authorities use a new formula for selecting which relays
|
|
|
|
|
to advertise as Guards: they must be in the top 7/8 in terms of
|
|
|
|
|
how long we have known about them, and above the median of those
|
|
|
|
|
nodes in terms of weighted fractional uptime.
|
|
|
|
|
- Directory authorities use a new formula for selecting which relays
|
|
|
|
|
to advertise as Stable: when we have 4 or more days of data, use
|
|
|
|
|
median measured MTBF rather than median declared uptime. Implements
|
|
|
|
|
proposal 108.
|
|
|
|
|
- Directory authorities accept and serve "extra info" documents for
|
|
|
|
|
routers. Routers now publish their bandwidth-history lines in the
|
|
|
|
|
extra-info docs rather than the main descriptor. This step saves
|
|
|
|
|
60% (!) on compressed router descriptor downloads. Servers upload
|
|
|
|
|
extra-info docs to any authority that accepts them; directory
|
|
|
|
|
authorities now allow multiple router descriptors and/or extra
|
|
|
|
|
info documents to be uploaded in a single go. Authorities, and
|
|
|
|
|
caches that have been configured to download extra-info documents,
|
|
|
|
|
download them as needed. Implements proposal 104.
|
|
|
|
|
- Authorities now list relays who have the same nickname as
|
|
|
|
|
a different named relay, but list them with a new flag:
|
|
|
|
|
"Unnamed". Now we can make use of relays that happen to pick the
|
|
|
|
|
same nickname as a server that registered two years ago and then
|
|
|
|
|
disappeared. Implements proposal 122.
|
|
|
|
|
- Store routers in a file called cached-descriptors instead of in
|
|
|
|
|
cached-routers. Initialize cached-descriptors from cached-routers
|
|
|
|
|
if the old format is around. The new format allows us to store
|
|
|
|
|
annotations along with descriptors, to record the time we received
|
|
|
|
|
each descriptor, its source, and its purpose: currently one of
|
|
|
|
|
general, controller, or bridge.
|
|
|
|
|
|
|
|
|
|
o Major features (other):
|
|
|
|
|
- New config options WarnPlaintextPorts and RejectPlaintextPorts so
|
|
|
|
|
Tor can warn and/or refuse connections to ports commonly used with
|
|
|
|
|
vulnerable-plaintext protocols. Currently we warn on ports 23,
|
|
|
|
|
109, 110, and 143, but we don't reject any. Based on proposal 129
|
|
|
|
|
by Kevin Bauer and Damon McCoy.
|
|
|
|
|
- Integrate Karsten Loesing's Google Summer of Code project to publish
|
|
|
|
|
hidden service descriptors on a set of redundant relays that are a
|
|
|
|
|
function of the hidden service address. Now we don't have to rely
|
|
|
|
|
on three central hidden service authorities for publishing and
|
|
|
|
|
fetching every hidden service descriptor. Implements proposal 114.
|
|
|
|
|
- Allow tunnelled directory connections to ask for an encrypted
|
|
|
|
|
"begin_dir" connection or an anonymized "uses a full Tor circuit"
|
|
|
|
|
connection independently. Now we can make anonymized begin_dir
|
|
|
|
|
connections for (e.g.) more secure hidden service posting and
|
|
|
|
|
fetching.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes and assert failures):
|
|
|
|
|
- Stop imposing an arbitrary maximum on the number of file descriptors
|
|
|
|
|
used for busy servers. Bug reported by Olaf Selke; patch from
|
|
|
|
|
Sebastian Hahn.
|
|
|
|
|
- Avoid possible failures when generating a directory with routers
|
|
|
|
|
with over-long versions strings, or too many flags set.
|
|
|
|
|
- Fix a rare assert error when we're closing one of our threads:
|
|
|
|
|
use a mutex to protect the list of logs, so we never write to the
|
|
|
|
|
list as it's being freed. Fixes the very rare bug 575, which is
|
|
|
|
|
kind of the revenge of bug 222.
|
|
|
|
|
- Avoid segfault in the case where a badly behaved v2 versioning
|
|
|
|
|
directory sends a signed networkstatus with missing client-versions.
|
|
|
|
|
- When we hit an EOF on a log (probably because we're shutting down),
|
|
|
|
|
don't try to remove the log from the list: just mark it as
|
|
|
|
|
unusable. (Bulletproofs against bug 222.)
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (code security fixes):
|
|
|
|
|
- Detect size overflow in zlib code. Reported by Justin Ferguson and
|
|
|
|
|
Dan Kaminsky.
|
|
|
|
|
- Rewrite directory tokenization code to never run off the end of
|
|
|
|
|
a string. Fixes bug 455. Patch from croup.
|
|
|
|
|
- Be more paranoid about overwriting sensitive memory on free(),
|
|
|
|
|
as a defensive programming tactic to ensure forward secrecy.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (anonymity fixes):
|
|
|
|
|
- Reject requests for reverse-dns lookup of names that are in
|
|
|
|
|
a private address space. Patch from lodger.
|
|
|
|
|
- Never report that we've used more bandwidth than we're willing to
|
|
|
|
|
relay: it leaks how much non-relay traffic we're using. Resolves
|
|
|
|
|
bug 516.
|
|
|
|
|
- As a client, do not believe any server that tells us that an
|
|
|
|
|
address maps to an internal address space.
|
|
|
|
|
- Warn about unsafe ControlPort configurations.
|
|
|
|
|
- Directory authorities now call routers Fast if their bandwidth is
|
|
|
|
|
at least 100KB/s, and consider their bandwidth adequate to be a
|
|
|
|
|
Guard if it is at least 250KB/s, no matter the medians. This fix
|
|
|
|
|
complements proposal 107.
|
2008-07-09 14:36:26 +02:00
|
|
|
- Directory authorities now never mark more than 2 servers per IP as
|
|
|
|
|
Valid and Running (or 5 on addresses shared by authorities).
|
|
|
|
|
Implements proposal 109, by Kevin Bauer and Damon McCoy.
|
2008-07-01 00:01:17 +02:00
|
|
|
- If we're a relay, avoid picking ourselves as an introduction point,
|
|
|
|
|
a rendezvous point, or as the final hop for internal circuits. Bug
|
|
|
|
|
reported by taranis and lodger.
|
|
|
|
|
- Exit relays that are used as a client can now reach themselves
|
|
|
|
|
using the .exit notation, rather than just launching an infinite
|
|
|
|
|
pile of circuits. Fixes bug 641. Reported by Sebastian Hahn.
|
|
|
|
|
- Fix a bug where, when we were choosing the 'end stream reason' to
|
|
|
|
|
put in our relay end cell that we send to the exit relay, Tor
|
|
|
|
|
clients on Windows were sometimes sending the wrong 'reason'. The
|
|
|
|
|
anonymity problem is that exit relays may be able to guess whether
|
|
|
|
|
the client is running Windows, thus helping partition the anonymity
|
|
|
|
|
set. Down the road we should stop sending reasons to exit relays,
|
|
|
|
|
or otherwise prevent future versions of this bug.
|
|
|
|
|
- Only update guard status (usable / not usable) once we have
|
|
|
|
|
enough directory information. This was causing us to discard all our
|
|
|
|
|
guards on startup if we hadn't been running for a few weeks. Fixes
|
|
|
|
|
bug 448.
|
|
|
|
|
- When our directory information has been expired for a while, stop
|
|
|
|
|
being willing to build circuits using it. Fixes bug 401.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (peace of mind for relay operators)
|
|
|
|
|
- Non-exit relays no longer answer "resolve" relay cells, so they
|
|
|
|
|
can't be induced to do arbitrary DNS requests. (Tor clients already
|
|
|
|
|
avoid using non-exit relays for resolve cells, but now servers
|
|
|
|
|
enforce this too.) Fixes bug 619. Patch from lodger.
|
|
|
|
|
- When we setconf ClientOnly to 1, close any current OR and Dir
|
|
|
|
|
listeners. Reported by mwenge.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (other):
|
|
|
|
|
- If we only ever used Tor for hidden service lookups or posts, we
|
|
|
|
|
would stop building circuits and start refusing connections after
|
|
|
|
|
24 hours, since we falsely believed that Tor was dormant. Reported
|
|
|
|
|
by nwf.
|
|
|
|
|
- Add a new __HashedControlSessionPassword option for controllers
|
|
|
|
|
to use for one-off session password hashes that shouldn't get
|
|
|
|
|
saved to disk by SAVECONF --- Vidalia users were accumulating a
|
|
|
|
|
pile of HashedControlPassword lines in their torrc files, one for
|
|
|
|
|
each time they had restarted Tor and then clicked Save. Make Tor
|
|
|
|
|
automatically convert "HashedControlPassword" to this new option but
|
|
|
|
|
only when it's given on the command line. Partial fix for bug 586.
|
|
|
|
|
- Patch from "Andrew S. Lists" to catch when we contact a directory
|
|
|
|
|
mirror at IP address X and he says we look like we're coming from
|
|
|
|
|
IP address X. Otherwise this would screw up our address detection.
|
|
|
|
|
- Reject uploaded descriptors and extrainfo documents if they're
|
|
|
|
|
huge. Otherwise we'll cache them all over the network and it'll
|
|
|
|
|
clog everything up. Suggested by Aljosha Judmayer.
|
2008-07-16 02:04:00 +02:00
|
|
|
- When a hidden service was trying to establish an introduction point,
|
|
|
|
|
and Tor *did* manage to reuse one of the preemptively built
|
|
|
|
|
circuits, it didn't correctly remember which one it used,
|
|
|
|
|
so it asked for another one soon after, until there were no
|
|
|
|
|
more preemptive circuits, at which point it launched one from
|
|
|
|
|
scratch. Bugfix on 0.0.9.x.
|
2008-07-01 00:01:17 +02:00
|
|
|
|
|
|
|
|
o Rate limiting and load balancing improvements:
|
|
|
|
|
- When we add data to a write buffer in response to the data on that
|
|
|
|
|
write buffer getting low because of a flush, do not consider the
|
|
|
|
|
newly added data as a candidate for immediate flushing, but rather
|
|
|
|
|
make it wait until the next round of writing. Otherwise, we flush
|
|
|
|
|
and refill recursively, and a single greedy TLS connection can
|
|
|
|
|
eat all of our bandwidth.
|
|
|
|
|
- When counting the number of bytes written on a TLS connection,
|
|
|
|
|
look at the BIO actually used for writing to the network, not
|
|
|
|
|
at the BIO used (sometimes) to buffer data for the network.
|
|
|
|
|
Looking at different BIOs could result in write counts on the
|
|
|
|
|
order of ULONG_MAX. Fixes bug 614.
|
|
|
|
|
- If we change our MaxAdvertisedBandwidth and then reload torrc,
|
|
|
|
|
Tor won't realize it should publish a new relay descriptor. Fixes
|
|
|
|
|
bug 688, reported by mfr.
|
|
|
|
|
- Avoid using too little bandwidth when our clock skips a few seconds.
|
|
|
|
|
- Choose which bridge to use proportional to its advertised bandwidth,
|
|
|
|
|
rather than uniformly at random. This should speed up Tor for
|
|
|
|
|
bridge users. Also do this for people who set StrictEntryNodes.
|
|
|
|
|
|
|
|
|
|
o Bootstrapping faster and building circuits more intelligently:
|
|
|
|
|
- Fix bug 660 that was preventing us from knowing that we should
|
|
|
|
|
preemptively build circuits to handle expected directory requests.
|
|
|
|
|
- When we're checking if we have enough dir info for each relay
|
|
|
|
|
to begin establishing circuits, make sure that we actually have
|
|
|
|
|
the descriptor listed in the consensus, not just any descriptor.
|
|
|
|
|
- Correctly notify one-hop connections when a circuit build has
|
|
|
|
|
failed. Possible fix for bug 669. Found by lodger.
|
|
|
|
|
- Clients now hold circuitless TLS connections open for 1.5 times
|
|
|
|
|
MaxCircuitDirtiness (15 minutes), since it is likely that they'll
|
|
|
|
|
rebuild a new circuit over them within that timeframe. Previously,
|
|
|
|
|
they held them open only for KeepalivePeriod (5 minutes).
|
|
|
|
|
|
|
|
|
|
o Performance improvements (memory):
|
|
|
|
|
- Add OpenBSD malloc code from "phk" as an optional malloc
|
|
|
|
|
replacement on Linux: some glibc libraries do very poorly with
|
|
|
|
|
Tor's memory allocation patterns. Pass --enable-openbsd-malloc to
|
|
|
|
|
./configure to get the replacement malloc code.
|
|
|
|
|
- Switch our old ring buffer implementation for one more like that
|
|
|
|
|
used by free Unix kernels. The wasted space in a buffer with 1mb
|
|
|
|
|
of data will now be more like 8k than 1mb. The new implementation
|
|
|
|
|
also avoids realloc();realloc(); patterns that can contribute to
|
|
|
|
|
memory fragmentation.
|
|
|
|
|
- Change the way that Tor buffers data that it is waiting to write.
|
|
|
|
|
Instead of queueing data cells in an enormous ring buffer for each
|
|
|
|
|
client->OR or OR->OR connection, we now queue cells on a separate
|
|
|
|
|
queue for each circuit. This lets us use less slack memory, and
|
|
|
|
|
will eventually let us be smarter about prioritizing different kinds
|
|
|
|
|
of traffic.
|
|
|
|
|
- Reference-count and share copies of address policy entries; only 5%
|
|
|
|
|
of them were actually distinct.
|
|
|
|
|
- Tune parameters for cell pool allocation to minimize amount of
|
|
|
|
|
RAM overhead used.
|
|
|
|
|
- Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
|
|
|
|
|
for every single inactive connection_t. Free items from the
|
|
|
|
|
4k/16k-buffer free lists when they haven't been used for a while.
|
|
|
|
|
- Make memory debugging information describe more about history
|
|
|
|
|
of cell allocation, so we can help reduce our memory use.
|
|
|
|
|
- Be even more aggressive about releasing RAM from small
|
|
|
|
|
empty buffers. Thanks to our free-list code, this shouldn't be too
|
|
|
|
|
performance-intensive.
|
|
|
|
|
- Log malloc statistics from mallinfo() on platforms where it exists.
|
|
|
|
|
- Use memory pools to allocate cells with better speed and memory
|
|
|
|
|
efficiency, especially on platforms where malloc() is inefficient.
|
|
|
|
|
- Add a --with-tcmalloc option to the configure script to link
|
|
|
|
|
against tcmalloc (if present). Does not yet search for non-system
|
|
|
|
|
include paths.
|
|
|
|
|
|
|
|
|
|
o Performance improvements (socket management):
|
|
|
|
|
- Count the number of open sockets separately from the number of
|
|
|
|
|
active connection_t objects. This will let us avoid underusing
|
|
|
|
|
our allocated connection limit.
|
|
|
|
|
- We no longer use socket pairs to link an edge connection to an
|
|
|
|
|
anonymous directory connection or a DirPort test connection.
|
|
|
|
|
Instead, we track the link internally and transfer the data
|
|
|
|
|
in-process. This saves two sockets per "linked" connection (at the
|
|
|
|
|
client and at the server), and avoids the nasty Windows socketpair()
|
|
|
|
|
workaround.
|
|
|
|
|
- We were leaking a file descriptor if Tor started with a zero-length
|
|
|
|
|
cached-descriptors file. Patch by "freddy77".
|
|
|
|
|
|
|
|
|
|
o Performance improvements (CPU use):
|
|
|
|
|
- Never walk through the list of logs if we know that no log target
|
|
|
|
|
is interested in a given message.
|
|
|
|
|
- Call routerlist_remove_old_routers() much less often. This should
|
|
|
|
|
speed startup, especially on directory caches.
|
|
|
|
|
- Base64 decoding was actually showing up on our profile when parsing
|
|
|
|
|
the initial descriptor file; switch to an in-process all-at-once
|
|
|
|
|
implementation that's about 3.5x times faster than calling out to
|
|
|
|
|
OpenSSL.
|
|
|
|
|
- Use a slightly simpler string hashing algorithm (copying Python's
|
|
|
|
|
instead of Java's) and optimize our digest hashing algorithm to take
|
|
|
|
|
advantage of 64-bit platforms and to remove some possibly-costly
|
|
|
|
|
voodoo.
|
|
|
|
|
- When implementing AES counter mode, update only the portions of the
|
|
|
|
|
counter buffer that need to change, and don't keep separate
|
|
|
|
|
network-order and host-order counters on big-endian hosts (where
|
|
|
|
|
they are the same).
|
|
|
|
|
- Add an in-place version of aes_crypt() so that we can avoid doing a
|
|
|
|
|
needless memcpy() call on each cell payload.
|
|
|
|
|
- Use Critical Sections rather than Mutexes for synchronizing threads
|
|
|
|
|
on win32; Mutexes are heavier-weight, and designed for synchronizing
|
|
|
|
|
between processes.
|
|
|
|
|
|
|
|
|
|
o Performance improvements (bandwidth use):
|
|
|
|
|
- Don't try to launch new descriptor downloads quite so often when we
|
|
|
|
|
already have enough directory information to build circuits.
|
|
|
|
|
- Version 1 directories are no longer generated in full. Instead,
|
|
|
|
|
authorities generate and serve "stub" v1 directories that list
|
|
|
|
|
no servers. This will stop Tor versions 0.1.0.x and earlier from
|
|
|
|
|
working, but (for security reasons) nobody should be running those
|
|
|
|
|
versions anyway.
|
|
|
|
|
- Avoid going directly to the directory authorities even if you're a
|
|
|
|
|
relay, if you haven't found yourself reachable yet or if you've
|
|
|
|
|
decided not to advertise your dirport yet. Addresses bug 556.
|
|
|
|
|
- If we've gone 12 hours since our last bandwidth check, and we
|
|
|
|
|
estimate we have less than 50KB bandwidth capacity but we could
|
|
|
|
|
handle more, do another bandwidth test.
|
|
|
|
|
- Support "If-Modified-Since" when answering HTTP requests for
|
|
|
|
|
directories, running-routers documents, and v2 and v3 networkstatus
|
|
|
|
|
documents. (There's no need to support it for router descriptors,
|
|
|
|
|
since those are downloaded by descriptor digest.)
|
|
|
|
|
- Stop fetching directory info so aggressively if your DirPort is
|
|
|
|
|
on but your ORPort is off; stop fetching v2 dir info entirely.
|
|
|
|
|
You can override these choices with the new FetchDirInfoEarly
|
|
|
|
|
config option.
|
|
|
|
|
|
|
|
|
|
o Changed config option behavior (features):
|
|
|
|
|
- Configuration files now accept C-style strings as values. This
|
|
|
|
|
helps encode characters not allowed in the current configuration
|
|
|
|
|
file format, such as newline or #. Addresses bug 557.
|
|
|
|
|
- Add hidden services and DNSPorts to the list of things that make
|
|
|
|
|
Tor accept that it has running ports. Change starting Tor with no
|
|
|
|
|
ports from a fatal error to a warning; we might change it back if
|
|
|
|
|
this turns out to confuse anybody. Fixes bug 579.
|
|
|
|
|
- Make PublishServerDescriptor default to 1, so the default doesn't
|
|
|
|
|
have to change as we invent new directory protocol versions.
|
|
|
|
|
- Allow people to say PreferTunnelledDirConns rather than
|
|
|
|
|
PreferTunneledDirConns, for those alternate-spellers out there.
|
|
|
|
|
- Raise the default BandwidthRate/BandwidthBurst to 5MB/10MB, to
|
|
|
|
|
accommodate the growing number of servers that use the default
|
|
|
|
|
and are reaching it.
|
|
|
|
|
- Make it possible to enable HashedControlPassword and
|
|
|
|
|
CookieAuthentication at the same time.
|
|
|
|
|
- When a TrackHostExits-chosen exit fails too many times in a row,
|
|
|
|
|
stop using it. Fixes bug 437.
|
|
|
|
|
|
|
|
|
|
o Changed config option behavior (bugfixes):
|
|
|
|
|
- Do not read the configuration file when we've only been told to
|
|
|
|
|
generate a password hash. Fixes bug 643. Bugfix on 0.0.9pre5. Fix
|
|
|
|
|
based on patch from Sebastian Hahn.
|
|
|
|
|
- Actually validate the options passed to AuthDirReject,
|
|
|
|
|
AuthDirInvalid, AuthDirBadDir, and AuthDirBadExit.
|
|
|
|
|
- Make "ClientOnly 1" config option disable directory ports too.
|
|
|
|
|
- Don't stop fetching descriptors when FetchUselessDescriptors is
|
|
|
|
|
set, even if we stop asking for circuits. Bug reported by tup
|
|
|
|
|
and ioerror.
|
|
|
|
|
- Servers used to decline to publish their DirPort if their
|
|
|
|
|
BandwidthRate or MaxAdvertisedBandwidth were below a threshold. Now
|
|
|
|
|
they look only at BandwidthRate and RelayBandwidthRate.
|
|
|
|
|
- Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
|
|
|
|
|
minus 1 byte: the actual maximum declared bandwidth.
|
|
|
|
|
- Make "TrackHostExits ." actually work. Bugfix on 0.1.0.x.
|
|
|
|
|
- Make the NodeFamilies config option work. (Reported by
|
|
|
|
|
lodger -- it has never actually worked, even though we added it
|
|
|
|
|
in Oct 2004.)
|
|
|
|
|
- If Tor is invoked from something that isn't a shell (e.g. Vidalia),
|
|
|
|
|
now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
|
|
|
|
|
|
|
|
|
|
o New config options:
|
2008-08-05 01:59:38 +02:00
|
|
|
- New configuration options AuthDirMaxServersPerAddr and
|
|
|
|
|
AuthDirMaxServersperAuthAddr to override default maximum number
|
|
|
|
|
of servers allowed on a single IP address. This is important for
|
|
|
|
|
running a test network on a single host.
|
2008-07-01 00:01:17 +02:00
|
|
|
- Three new config options (AlternateDirAuthority,
|
|
|
|
|
AlternateBridgeAuthority, and AlternateHSAuthority) that let the
|
|
|
|
|
user selectively replace the default directory authorities by type,
|
|
|
|
|
rather than the all-or-nothing replacement that DirServer offers.
|
|
|
|
|
- New config options AuthDirBadDir and AuthDirListBadDirs for
|
|
|
|
|
authorities to mark certain relays as "bad directories" in the
|
|
|
|
|
networkstatus documents. Also supports the "!baddir" directive in
|
|
|
|
|
the approved-routers file.
|
|
|
|
|
- New config option V2AuthoritativeDirectory that all v2 directory
|
|
|
|
|
authorities must set. This lets v3 authorities choose not to serve
|
|
|
|
|
v2 directory information.
|
|
|
|
|
|
|
|
|
|
o Minor features (other):
|
|
|
|
|
- When we're not serving v2 directory information, there is no reason
|
|
|
|
|
to actually keep any around. Remove the obsolete files and directory
|
|
|
|
|
on startup if they are very old and we aren't going to serve them.
|
|
|
|
|
- When we negotiate a v2 link-layer connection (not yet implemented),
|
|
|
|
|
accept RELAY_EARLY cells and turn them into RELAY cells if we've
|
|
|
|
|
negotiated a v1 connection for their next step. Initial steps for
|
|
|
|
|
proposal 110.
|
|
|
|
|
- When we have no consensus, check FallbackNetworkstatusFile (defaults
|
|
|
|
|
to $PREFIX/share/tor/fallback-consensus) for a consensus. This way
|
|
|
|
|
we can start out knowing some directory caches. We don't ship with
|
2008-08-05 01:59:38 +02:00
|
|
|
a fallback consensus by default though, because it was making
|
2008-07-01 00:01:17 +02:00
|
|
|
bootstrapping take too long while we tried many down relays.
|
|
|
|
|
- Authorities send back an X-Descriptor-Not-New header in response to
|
|
|
|
|
an accepted-but-discarded descriptor upload. Partially implements
|
|
|
|
|
fix for bug 535.
|
|
|
|
|
- If we find a cached-routers file that's been sitting around for more
|
|
|
|
|
than 28 days unmodified, then most likely it's a leftover from
|
|
|
|
|
when we upgraded to 0.2.0.8-alpha. Remove it. It has no good
|
|
|
|
|
routers anyway.
|
|
|
|
|
- When we (as a cache) download a descriptor because it was listed
|
|
|
|
|
in a consensus, remember when the consensus was supposed to expire,
|
|
|
|
|
and don't expire the descriptor until then.
|
|
|
|
|
- Optionally (if built with -DEXPORTMALLINFO) export the output
|
|
|
|
|
of mallinfo via http, as tor/mallinfo.txt. Only accessible
|
|
|
|
|
from localhost.
|
|
|
|
|
- Tag every guard node in our state file with the version that
|
|
|
|
|
we believe added it, or with our own version if we add it. This way,
|
|
|
|
|
if a user temporarily runs an old version of Tor and then switches
|
|
|
|
|
back to a new one, she doesn't automatically lose her guards.
|
|
|
|
|
- When somebody requests a list of statuses or servers, and we have
|
|
|
|
|
none of those, return a 404 rather than an empty 200.
|
|
|
|
|
- Merge in some (as-yet-unused) IPv6 address manipulation code. (Patch
|
|
|
|
|
from croup.)
|
|
|
|
|
- Add an HSAuthorityRecordStats option that hidden service authorities
|
|
|
|
|
can use to track statistics of overall hidden service usage without
|
|
|
|
|
logging information that would be as useful to an attacker.
|
|
|
|
|
- Allow multiple HiddenServicePort directives with the same virtual
|
|
|
|
|
port; when they occur, the user is sent round-robin to one
|
|
|
|
|
of the target ports chosen at random. Partially fixes bug 393 by
|
|
|
|
|
adding limited ad-hoc round-robining.
|
|
|
|
|
- Revamp file-writing logic so we don't need to have the entire
|
|
|
|
|
contents of a file in memory at once before we write to disk. Tor,
|
|
|
|
|
meet stdio.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (other):
|
|
|
|
|
- Alter the code that tries to recover from unhandled write
|
|
|
|
|
errors, to not try to flush onto a socket that's given us
|
|
|
|
|
unhandled errors.
|
|
|
|
|
- Directory mirrors no longer include a guess at the client's IP
|
|
|
|
|
address if the connection appears to be coming from the same /24
|
|
|
|
|
network; it was producing too many wrong guesses.
|
|
|
|
|
- If we're trying to flush the last bytes on a connection (for
|
|
|
|
|
example, when answering a directory request), reset the
|
|
|
|
|
time-to-give-up timeout every time we manage to write something
|
|
|
|
|
on the socket.
|
|
|
|
|
- Reject router descriptors with out-of-range bandwidthcapacity or
|
|
|
|
|
bandwidthburst values.
|
|
|
|
|
- If we can't expand our list of entry guards (e.g. because we're
|
|
|
|
|
using bridges or we have StrictEntryNodes set), don't mark relays
|
|
|
|
|
down when they fail a directory request. Otherwise we're too quick
|
|
|
|
|
to mark all our entry points down.
|
|
|
|
|
- Authorities no longer send back "400 you're unreachable please fix
|
|
|
|
|
it" errors to Tor servers that aren't online all the time. We're
|
|
|
|
|
supposed to tolerate these servers now.
|
|
|
|
|
- Let directory authorities startup even when they can't generate
|
|
|
|
|
a descriptor immediately, e.g. because they don't know their
|
|
|
|
|
address.
|
|
|
|
|
- Correctly enforce that elements of directory objects do not appear
|
|
|
|
|
more often than they are allowed to appear.
|
|
|
|
|
- Stop allowing hibernating servers to be "stable" or "fast".
|
|
|
|
|
- On Windows, we were preventing other processes from reading
|
|
|
|
|
cached-routers while Tor was running. (Reported by janbar)
|
|
|
|
|
- Check return values from pthread_mutex functions.
|
2008-07-16 02:04:00 +02:00
|
|
|
- When opening /dev/null in finish_daemonize(), do not pass the
|
|
|
|
|
O_CREAT flag. Fortify was complaining, and correctly so. Fixes
|
|
|
|
|
bug 742; fix from Michael Scherer. Bugfix on 0.0.2pre19.
|
2008-07-01 00:01:17 +02:00
|
|
|
|
|
|
|
|
o Controller features:
|
|
|
|
|
- The GETCONF command now escapes and quotes configuration values
|
|
|
|
|
that don't otherwise fit into the torrc file.
|
|
|
|
|
- The SETCONF command now handles quoted values correctly.
|
|
|
|
|
- Add "GETINFO/desc-annotations/id/<OR digest>" so controllers can
|
|
|
|
|
ask about source, timestamp of arrival, purpose, etc. We need
|
|
|
|
|
something like this to help Vidalia not do GeoIP lookups on bridge
|
|
|
|
|
addresses.
|
|
|
|
|
- Allow multiple HashedControlPassword config lines, to support
|
|
|
|
|
multiple controller passwords.
|
|
|
|
|
- Accept LF instead of CRLF on controller, since some software has a
|
|
|
|
|
hard time generating real Internet newlines.
|
|
|
|
|
- Add GETINFO values for the server status events
|
|
|
|
|
"REACHABILITY_SUCCEEDED" and "GOOD_SERVER_DESCRIPTOR". Patch from
|
|
|
|
|
Robert Hogan.
|
|
|
|
|
- There is now an ugly, temporary "desc/all-recent-extrainfo-hack"
|
|
|
|
|
GETINFO for Torstat to use until it can switch to using extrainfos.
|
|
|
|
|
- New config option CookieAuthFile to choose a new location for the
|
|
|
|
|
cookie authentication file, and config option
|
|
|
|
|
CookieAuthFileGroupReadable to make it group-readable.
|
|
|
|
|
- Add a SOURCE_ADDR field to STREAM NEW events so that controllers can
|
|
|
|
|
match requests to applications. Patch from Robert Hogan.
|
|
|
|
|
- Add a RESOLVE command to launch hostname lookups. Original patch
|
|
|
|
|
from Robert Hogan.
|
|
|
|
|
- Add GETINFO status/enough-dir-info to let controllers tell whether
|
|
|
|
|
Tor has downloaded sufficient directory information. Patch from Tup.
|
|
|
|
|
- You can now use the ControlSocket option to tell Tor to listen for
|
|
|
|
|
controller connections on Unix domain sockets on systems that
|
|
|
|
|
support them. Patch from Peter Palfrader.
|
|
|
|
|
- New "GETINFO address-mappings/*" command to get address mappings
|
|
|
|
|
with expiry information. "addr-mappings/*" is now deprecated.
|
|
|
|
|
Patch from Tup.
|
|
|
|
|
- Add a new config option __DisablePredictedCircuits designed for
|
|
|
|
|
use by the controller, when we don't want Tor to build any circuits
|
|
|
|
|
preemptively.
|
|
|
|
|
- Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
|
|
|
|
|
so we can exit from the middle of the circuit.
|
|
|
|
|
- Implement "getinfo status/circuit-established".
|
|
|
|
|
- Implement "getinfo status/version/..." so a controller can tell
|
|
|
|
|
whether the current version is recommended, and whether any versions
|
|
|
|
|
are good, and how many authorities agree. Patch from "shibz".
|
|
|
|
|
- Controllers should now specify cache=no or cache=yes when using
|
|
|
|
|
the +POSTDESCRIPTOR command.
|
|
|
|
|
- Add a "PURPOSE=" argument to "STREAM NEW" events, as suggested by
|
|
|
|
|
Robert Hogan. Fixes the first part of bug 681.
|
|
|
|
|
- When reporting clock skew, and we know that the clock is _at least
|
|
|
|
|
as skewed_ as some value, but we don't know the actual value,
|
|
|
|
|
report the value as a "minimum skew."
|
|
|
|
|
|
|
|
|
|
o Controller bugfixes:
|
|
|
|
|
- Generate "STATUS_SERVER" events rather than misspelled
|
|
|
|
|
"STATUS_SEVER" events. Caught by mwenge.
|
|
|
|
|
- Reject controller commands over 1MB in length, so rogue
|
|
|
|
|
processes can't run us out of memory.
|
|
|
|
|
- Change the behavior of "getinfo status/good-server-descriptor"
|
|
|
|
|
so it doesn't return failure when any authority disappears.
|
|
|
|
|
- Send NAMESERVER_STATUS messages for a single failed nameserver
|
|
|
|
|
correctly.
|
|
|
|
|
- When the DANGEROUS_VERSION controller status event told us we're
|
|
|
|
|
running an obsolete version, it used the string "OLD" to describe
|
|
|
|
|
it. Yet the "getinfo" interface used the string "OBSOLETE". Now use
|
|
|
|
|
"OBSOLETE" in both cases.
|
|
|
|
|
- Respond to INT and TERM SIGNAL commands before we execute the
|
|
|
|
|
signal, in case the signal shuts us down. We had a patch in
|
|
|
|
|
0.1.2.1-alpha that tried to do this by queueing the response on
|
|
|
|
|
the connection's buffer before shutting down, but that really
|
|
|
|
|
isn't the same thing at all. Bug located by Matt Edman.
|
|
|
|
|
- Provide DNS expiry times in GMT, not in local time. For backward
|
|
|
|
|
compatibility, ADDRMAP events only provide GMT expiry in an extended
|
|
|
|
|
field. "GETINFO address-mappings" always does the right thing.
|
|
|
|
|
- Use CRLF line endings properly in NS events.
|
|
|
|
|
- Make 'getinfo fingerprint' return a 551 error if we're not a
|
|
|
|
|
server, so we match what the control spec claims we do. Reported
|
|
|
|
|
by daejees.
|
|
|
|
|
- Fix a typo in an error message when extendcircuit fails that
|
|
|
|
|
caused us to not follow the \r\n-based delimiter protocol. Reported
|
|
|
|
|
by daejees.
|
|
|
|
|
- When tunneling an encrypted directory connection, and its first
|
|
|
|
|
circuit fails, do not leave it unattached and ask the controller
|
|
|
|
|
to deal. Fixes the second part of bug 681.
|
|
|
|
|
- Treat some 403 responses from directory servers as INFO rather than
|
|
|
|
|
WARN-severity events.
|
|
|
|
|
|
|
|
|
|
o Portability / building / compiling:
|
|
|
|
|
- When building with --enable-gcc-warnings, check for whether Apple's
|
|
|
|
|
warning "-Wshorten-64-to-32" is available.
|
|
|
|
|
- Support compilation to target iPhone; patch from cjacker huang.
|
|
|
|
|
To build for iPhone, pass the --enable-iphone option to configure.
|
2011-08-27 01:14:07 +02:00
|
|
|
- Port Tor to build and run correctly on Windows CE systems, using
|
|
|
|
|
the wcecompat library. Contributed by Valerio Lupi.
|
2008-07-01 00:01:17 +02:00
|
|
|
- Detect non-ASCII platforms (if any still exist) and refuse to
|
|
|
|
|
build there: some of our code assumes that 'A' is 65 and so on.
|
|
|
|
|
- Clear up some MIPSPro compiler warnings.
|
|
|
|
|
- Make autoconf search for libevent, openssl, and zlib consistently.
|
|
|
|
|
- Update deprecated macros in configure.in.
|
|
|
|
|
- When warning about missing headers, tell the user to let us
|
|
|
|
|
know if the compile succeeds anyway, so we can downgrade the
|
|
|
|
|
warning.
|
|
|
|
|
- Include the current subversion revision as part of the version
|
|
|
|
|
string: either fetch it directly if we're in an SVN checkout, do
|
|
|
|
|
some magic to guess it if we're in an SVK checkout, or use
|
|
|
|
|
the last-detected version if we're building from a .tar.gz.
|
|
|
|
|
Use this version consistently in log messages.
|
|
|
|
|
- Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
|
|
|
|
|
- Read resolv.conf files correctly on platforms where read() returns
|
|
|
|
|
partial results on small file reads.
|
|
|
|
|
- Build without verbose warnings even on gcc 4.2 and 4.3.
|
|
|
|
|
- On Windows, correctly detect errors when listing the contents of
|
|
|
|
|
a directory. Fix from lodger.
|
|
|
|
|
- Run 'make test' as part of 'make dist', so we stop releasing so
|
|
|
|
|
many development snapshots that fail their unit tests.
|
|
|
|
|
- Add support to detect Libevent versions in the 1.4.x series
|
|
|
|
|
on mingw.
|
|
|
|
|
- Add command-line arguments to unit-test executable so that we can
|
|
|
|
|
invoke any chosen test from the command line rather than having
|
|
|
|
|
to run the whole test suite at once; and so that we can turn on
|
|
|
|
|
logging for the unit tests.
|
|
|
|
|
- Do not automatically run configure from autogen.sh. This
|
|
|
|
|
non-standard behavior tended to annoy people who have built other
|
|
|
|
|
programs.
|
2008-07-16 02:04:00 +02:00
|
|
|
- Fix a macro/CPP interaction that was confusing some compilers:
|
|
|
|
|
some GCCs don't like #if/#endif pairs inside macro arguments.
|
|
|
|
|
Fixes bug 707.
|
|
|
|
|
- Fix macro collision between OpenSSL 0.9.8h and Windows headers.
|
|
|
|
|
Fixes bug 704; fix from Steven Murdoch.
|
|
|
|
|
- Correctly detect transparent proxy support on Linux hosts that
|
|
|
|
|
require in.h to be included before netfilter_ipv4.h. Patch
|
|
|
|
|
from coderman.
|
2008-07-01 00:01:17 +02:00
|
|
|
|
|
|
|
|
o Logging improvements:
|
|
|
|
|
- When we haven't had any application requests lately, don't bother
|
|
|
|
|
logging that we have expired a bunch of descriptors.
|
|
|
|
|
- When attempting to open a logfile fails, tell us why.
|
|
|
|
|
- Only log guard node status when guard node status has changed.
|
|
|
|
|
- Downgrade the 3 most common "INFO" messages to "DEBUG". This will
|
|
|
|
|
make "INFO" 75% less verbose.
|
|
|
|
|
- When SafeLogging is disabled, log addresses along with all TLS
|
|
|
|
|
errors.
|
|
|
|
|
- Report TLS "zero return" case as a "clean close" and "IO error"
|
|
|
|
|
as a "close". Stop calling closes "unexpected closes": existing
|
|
|
|
|
Tors don't use SSL_close(), so having a connection close without
|
|
|
|
|
the TLS shutdown handshake is hardly unexpected.
|
|
|
|
|
- When we receive a consensus from the future, warn about skew.
|
|
|
|
|
- Make "not enough dir info yet" warnings describe *why* Tor feels
|
|
|
|
|
it doesn't have enough directory info yet.
|
|
|
|
|
- On the USR1 signal, when dmalloc is in use, log the top 10 memory
|
|
|
|
|
consumers. (We already do this on HUP.)
|
|
|
|
|
- Give more descriptive well-formedness errors for out-of-range
|
|
|
|
|
hidden service descriptor/protocol versions.
|
|
|
|
|
- Stop recommending that every server operator send mail to tor-ops.
|
|
|
|
|
Resolves bug 597. Bugfix on 0.1.2.x.
|
|
|
|
|
- Improve skew reporting: try to give the user a better log message
|
|
|
|
|
about how skewed they are, and how much this matters.
|
|
|
|
|
- New --quiet command-line option to suppress the default console log.
|
|
|
|
|
Good in combination with --hash-password.
|
|
|
|
|
- Don't complain that "your server has not managed to confirm that its
|
|
|
|
|
ports are reachable" if we haven't been able to build any circuits
|
|
|
|
|
yet.
|
|
|
|
|
- Detect the reason for failing to mmap a descriptor file we just
|
|
|
|
|
wrote, and give a more useful log message. Fixes bug 533.
|
|
|
|
|
- Always prepend "Bug: " to any log message about a bug.
|
|
|
|
|
- When dumping memory usage, list bytes used in buffer memory
|
|
|
|
|
free-lists.
|
|
|
|
|
- When running with dmalloc, dump more stats on hup and on exit.
|
|
|
|
|
- Put a platform string (e.g. "Linux i686") in the startup log
|
|
|
|
|
message, so when people paste just their logs, we know if it's
|
|
|
|
|
OpenBSD or Windows or what.
|
|
|
|
|
- When logging memory usage, break down memory used in buffers by
|
|
|
|
|
buffer type.
|
|
|
|
|
- When we are reporting the DirServer line we just parsed, we were
|
|
|
|
|
logging the second stanza of the key fingerprint, not the first.
|
|
|
|
|
- Even though Windows is equally happy with / and \ as path separators,
|
|
|
|
|
try to use \ consistently on Windows and / consistently on Unix: it
|
|
|
|
|
makes the log messages nicer.
|
|
|
|
|
- On OSX, stop warning the user that kqueue support in libevent is
|
|
|
|
|
"experimental", since it seems to have worked fine for ages.
|
|
|
|
|
|
|
|
|
|
o Contributed scripts and tools:
|
|
|
|
|
- Update linux-tor-prio.sh script to allow QoS based on the uid of
|
|
|
|
|
the Tor process. Patch from Marco Bonetti with tweaks from Mike
|
|
|
|
|
Perry.
|
|
|
|
|
- Include the "tor-ctrl.sh" bash script by Stefan Behte to provide
|
|
|
|
|
Unix users an easy way to script their Tor process (e.g. by
|
|
|
|
|
adjusting bandwidth based on the time of the day).
|
|
|
|
|
- In the exitlist script, only consider the most recently published
|
|
|
|
|
server descriptor for each server. Also, when the user requests
|
|
|
|
|
a list of servers that _reject_ connections to a given address,
|
|
|
|
|
explicitly exclude the IPs that also have servers that accept
|
|
|
|
|
connections to that address. Resolves bug 405.
|
|
|
|
|
- Include a new contrib/tor-exit-notice.html file that exit relay
|
|
|
|
|
operators can put on their website to help reduce abuse queries.
|
|
|
|
|
|
|
|
|
|
o Newly deprecated features:
|
|
|
|
|
- The status/version/num-versioning and status/version/num-concurring
|
|
|
|
|
GETINFO controller options are no longer useful in the v3 directory
|
|
|
|
|
protocol: treat them as deprecated, and warn when they're used.
|
|
|
|
|
- The RedirectExits config option is now deprecated.
|
|
|
|
|
|
|
|
|
|
o Removed features:
|
|
|
|
|
- Drop the old code to choke directory connections when the
|
|
|
|
|
corresponding OR connections got full: thanks to the cell queue
|
|
|
|
|
feature, OR conns don't get full any more.
|
|
|
|
|
- Remove the old "dns worker" server DNS code: it hasn't been default
|
|
|
|
|
since 0.1.2.2-alpha, and all the servers are using the new
|
|
|
|
|
eventdns code.
|
|
|
|
|
- Remove the code to generate the oldest (v1) directory format.
|
|
|
|
|
- Remove support for the old bw_accounting file: we've been storing
|
|
|
|
|
bandwidth accounting information in the state file since
|
|
|
|
|
0.1.2.5-alpha. This may result in bandwidth accounting errors
|
|
|
|
|
if you try to upgrade from 0.1.1.x or earlier, or if you try to
|
|
|
|
|
downgrade to 0.1.1.x or earlier.
|
|
|
|
|
- Drop support for OpenSSL version 0.9.6. Just about nobody was using
|
|
|
|
|
it, it had no AES, and it hasn't seen any security patches since
|
|
|
|
|
2004.
|
|
|
|
|
- Stop overloading the circuit_t.onionskin field for both "onionskin
|
|
|
|
|
from a CREATE cell that we are waiting for a cpuworker to be
|
|
|
|
|
assigned" and "onionskin from an EXTEND cell that we are going to
|
|
|
|
|
send to an OR as soon as we are connected". Might help with bug 600.
|
|
|
|
|
- Remove the tor_strpartition() function: its logic was confused,
|
|
|
|
|
and it was only used for one thing that could be implemented far
|
|
|
|
|
more easily.
|
|
|
|
|
- Remove the contrib scripts ExerciseServer.py, PathDemo.py,
|
|
|
|
|
and TorControl.py, as they use the old v0 controller protocol,
|
|
|
|
|
and are obsoleted by TorFlow anyway.
|
|
|
|
|
- Drop support for v1 rendezvous descriptors, since we never used
|
|
|
|
|
them anyway, and the code has probably rotted by now. Based on
|
|
|
|
|
patch from Karsten Loesing.
|
|
|
|
|
- Stop allowing address masks that do not correspond to bit prefixes.
|
|
|
|
|
We have warned about these for a really long time; now it's time
|
|
|
|
|
to reject them. (Patch from croup.)
|
|
|
|
|
- Remove an optimization in the AES counter-mode code that assumed
|
|
|
|
|
that the counter never exceeded 2^68. When the counter can be set
|
|
|
|
|
arbitrarily as an IV (as it is by Karsten's new hidden services
|
|
|
|
|
code), this assumption no longer holds.
|
|
|
|
|
- Disable the SETROUTERPURPOSE controller command: it is now
|
|
|
|
|
obsolete.
|
|
|
|
|
|
|
|
|
|
|
2008-01-19 18:58:09 +01:00
|
|
|
Changes in version 0.1.2.19 - 2008-01-17
|
|
|
|
|
Tor 0.1.2.19 fixes a huge memory leak on exit relays, makes the default
|
|
|
|
|
exit policy a little bit more conservative so it's safer to run an
|
|
|
|
|
exit relay on a home system, and fixes a variety of smaller issues.
|
|
|
|
|
|
|
|
|
|
o Security fixes:
|
|
|
|
|
- Exit policies now reject connections that are addressed to a
|
|
|
|
|
relay's public (external) IP address too, unless
|
|
|
|
|
ExitPolicyRejectPrivate is turned off. We do this because too
|
|
|
|
|
many relays are running nearby to services that trust them based
|
|
|
|
|
on network address.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- When the clock jumps forward a lot, do not allow the bandwidth
|
|
|
|
|
buckets to become negative. Fixes bug 544.
|
|
|
|
|
- Fix a memory leak on exit relays; we were leaking a cached_resolve_t
|
|
|
|
|
on every successful resolve. Reported by Mike Perry.
|
|
|
|
|
- Purge old entries from the "rephist" database and the hidden
|
|
|
|
|
service descriptor database even when DirPort is zero.
|
|
|
|
|
- Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
|
|
|
|
|
requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
|
|
|
|
|
crashing or mis-answering these requests.
|
|
|
|
|
- When we decide to send a 503 response to a request for servers, do
|
|
|
|
|
not then also send the server descriptors: this defeats the whole
|
|
|
|
|
purpose. Fixes bug 539.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Changing the ExitPolicyRejectPrivate setting should cause us to
|
|
|
|
|
rebuild our server descriptor.
|
|
|
|
|
- Fix handling of hex nicknames when answering controller requests for
|
|
|
|
|
networkstatus by name, or when deciding whether to warn about
|
|
|
|
|
unknown routers in a config option. (Patch from mwenge.)
|
|
|
|
|
- Fix a couple of hard-to-trigger autoconf problems that could result
|
|
|
|
|
in really weird results on platforms whose sys/types.h files define
|
|
|
|
|
nonstandard integer types.
|
|
|
|
|
- Don't try to create the datadir when running --verify-config or
|
|
|
|
|
--hash-password. Resolves bug 540.
|
|
|
|
|
- If we were having problems getting a particular descriptor from the
|
|
|
|
|
directory caches, and then we learned about a new descriptor for
|
|
|
|
|
that router, we weren't resetting our failure count. Reported
|
|
|
|
|
by lodger.
|
|
|
|
|
- Although we fixed bug 539 (where servers would send HTTP status 503
|
|
|
|
|
responses _and_ send a body too), there are still servers out there
|
|
|
|
|
that haven't upgraded. Therefore, make clients parse such bodies
|
|
|
|
|
when they receive them.
|
|
|
|
|
- Run correctly on systems where rlim_t is larger than unsigned long.
|
|
|
|
|
This includes some 64-bit systems.
|
|
|
|
|
- Run correctly on platforms (like some versions of OS X 10.5) where
|
|
|
|
|
the real limit for number of open files is OPEN_FILES, not rlim_max
|
|
|
|
|
from getrlimit(RLIMIT_NOFILES).
|
|
|
|
|
- Avoid a spurious free on base64 failure.
|
|
|
|
|
- Avoid segfaults on certain complex invocations of
|
|
|
|
|
router_get_by_hexdigest().
|
|
|
|
|
- Fix rare bug on REDIRECTSTREAM control command when called with no
|
|
|
|
|
port set: it could erroneously report an error when none had
|
|
|
|
|
happened.
|
|
|
|
|
|
|
|
|
|
|
2007-11-11 01:33:53 +01:00
|
|
|
Changes in version 0.1.2.18 - 2007-10-28
|
|
|
|
|
Tor 0.1.2.18 fixes many problems including crash bugs, problems with
|
|
|
|
|
hidden service introduction that were causing huge delays, and a big
|
|
|
|
|
bug that was causing some servers to disappear from the network status
|
|
|
|
|
lists for a few hours each day.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- If a connection is shut down abruptly because of something that
|
|
|
|
|
happened inside connection_flushed_some(), do not call
|
|
|
|
|
connection_finished_flushing(). Should fix bug 451:
|
|
|
|
|
"connection_stop_writing: Assertion conn->write_event failed"
|
|
|
|
|
Bugfix on 0.1.2.7-alpha.
|
|
|
|
|
- Fix possible segfaults in functions called from
|
|
|
|
|
rend_process_relay_cell().
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (hidden services):
|
|
|
|
|
- Hidden services were choosing introduction points uniquely by
|
|
|
|
|
hexdigest, but when constructing the hidden service descriptor
|
|
|
|
|
they merely wrote the (potentially ambiguous) nickname.
|
|
|
|
|
- Clients now use the v2 intro format for hidden service
|
|
|
|
|
connections: they specify their chosen rendezvous point by identity
|
|
|
|
|
digest rather than by (potentially ambiguous) nickname. These
|
|
|
|
|
changes could speed up hidden service connections dramatically.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (other):
|
|
|
|
|
- Stop publishing a new server descriptor just because we get a
|
|
|
|
|
HUP signal. This led (in a roundabout way) to some servers getting
|
|
|
|
|
dropped from the networkstatus lists for a few hours each day.
|
|
|
|
|
- When looking for a circuit to cannibalize, consider family as well
|
|
|
|
|
as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
|
|
|
|
|
circuit cannibalization).
|
|
|
|
|
- When a router wasn't listed in a new networkstatus, we were leaving
|
|
|
|
|
the flags for that router alone -- meaning it remained Named,
|
|
|
|
|
Running, etc -- even though absence from the networkstatus means
|
|
|
|
|
that it shouldn't be considered to exist at all anymore. Now we
|
|
|
|
|
clear all the flags for routers that fall out of the networkstatus
|
|
|
|
|
consensus. Fixes bug 529.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Don't try to access (or alter) the state file when running
|
|
|
|
|
--list-fingerprint or --verify-config or --hash-password. Resolves
|
|
|
|
|
bug 499.
|
|
|
|
|
- When generating information telling us how to extend to a given
|
|
|
|
|
router, do not try to include the nickname if it is
|
|
|
|
|
absent. Resolves bug 467.
|
|
|
|
|
- Fix a user-triggerable segfault in expand_filename(). (There isn't
|
|
|
|
|
a way to trigger this remotely.)
|
|
|
|
|
- When sending a status event to the controller telling it that an
|
2008-06-07 07:24:47 +02:00
|
|
|
OR address is reachable, set the port correctly. (Previously we
|
2007-11-11 01:33:53 +01:00
|
|
|
were reporting the dir port.)
|
|
|
|
|
- Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
|
|
|
|
|
command. Bugfix on 0.1.2.17.
|
|
|
|
|
- When loading bandwidth history, do not believe any information in
|
|
|
|
|
the future. Fixes bug 434.
|
|
|
|
|
- When loading entry guard information, do not believe any information
|
|
|
|
|
in the future.
|
|
|
|
|
- When we have our clock set far in the future and generate an
|
|
|
|
|
onion key, then re-set our clock to be correct, we should not stop
|
|
|
|
|
the onion key from getting rotated.
|
|
|
|
|
- On some platforms, accept() can return a broken address. Detect
|
|
|
|
|
this more quietly, and deal accordingly. Fixes bug 483.
|
|
|
|
|
- It's not actually an error to find a non-pending entry in the DNS
|
|
|
|
|
cache when canceling a pending resolve. Don't log unless stuff
|
|
|
|
|
is fishy. Resolves bug 463.
|
|
|
|
|
- Don't reset trusted dir server list when we set a configuration
|
|
|
|
|
option. Patch from Robert Hogan.
|
|
|
|
|
|
|
|
|
|
|
2007-09-29 00:53:42 +02:00
|
|
|
Changes in version 0.1.2.17 - 2007-08-30
|
2007-10-22 10:54:32 +02:00
|
|
|
Tor 0.1.2.17 features a new Vidalia version in the Windows and OS
|
|
|
|
|
X bundles. Vidalia 0.0.14 makes authentication required for the
|
|
|
|
|
ControlPort in the default configuration, which addresses important
|
|
|
|
|
security risks. Everybody who uses Vidalia (or another controller)
|
|
|
|
|
should upgrade.
|
|
|
|
|
|
|
|
|
|
In addition, this Tor update fixes major load balancing problems with
|
|
|
|
|
path selection, which should speed things up a lot once many people
|
|
|
|
|
have upgraded.
|
|
|
|
|
|
2007-09-29 00:53:42 +02:00
|
|
|
o Major bugfixes (security):
|
|
|
|
|
- We removed support for the old (v0) control protocol. It has been
|
|
|
|
|
deprecated since Tor 0.1.1.1-alpha, and keeping it secure has
|
|
|
|
|
become more of a headache than it's worth.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (load balancing):
|
|
|
|
|
- When choosing nodes for non-guard positions, weight guards
|
|
|
|
|
proportionally less, since they already have enough load. Patch
|
|
|
|
|
from Mike Perry.
|
|
|
|
|
- Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
|
|
|
|
|
will allow fast Tor servers to get more attention.
|
|
|
|
|
- When we're upgrading from an old Tor version, forget our current
|
|
|
|
|
guards and pick new ones according to the new weightings. These
|
|
|
|
|
three load balancing patches could raise effective network capacity
|
|
|
|
|
by a factor of four. Thanks to Mike Perry for measurements.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (stream expiration):
|
|
|
|
|
- Expire not-yet-successful application streams in all cases if
|
|
|
|
|
they've been around longer than SocksTimeout. Right now there are
|
|
|
|
|
some cases where the stream will live forever, demanding a new
|
|
|
|
|
circuit every 15 seconds. Fixes bug 454; reported by lodger.
|
|
|
|
|
|
|
|
|
|
o Minor features (controller):
|
|
|
|
|
- Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
|
|
|
|
|
is valid before any authentication has been received. It tells
|
|
|
|
|
a controller what kind of authentication is expected, and what
|
|
|
|
|
protocol is spoken. Implements proposal 119.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (performance):
|
|
|
|
|
- Save on most routerlist_assert_ok() calls in routerlist.c, thus
|
|
|
|
|
greatly speeding up loading cached-routers from disk on startup.
|
|
|
|
|
- Disable sentinel-based debugging for buffer code: we squashed all
|
|
|
|
|
the bugs that this was supposed to detect a long time ago, and now
|
|
|
|
|
its only effect is to change our buffer sizes from nice powers of
|
|
|
|
|
two (which platform mallocs tend to like) to values slightly over
|
|
|
|
|
powers of two (which make some platform mallocs sad).
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (misc):
|
|
|
|
|
- If exit bandwidth ever exceeds one third of total bandwidth, then
|
|
|
|
|
use the correct formula to weight exit nodes when choosing paths.
|
|
|
|
|
Based on patch from Mike Perry.
|
|
|
|
|
- Choose perfectly fairly among routers when choosing by bandwidth and
|
|
|
|
|
weighting by fraction of bandwidth provided by exits. Previously, we
|
|
|
|
|
would choose with only approximate fairness, and correct ourselves
|
|
|
|
|
if we ran off the end of the list.
|
|
|
|
|
- If we require CookieAuthentication but we fail to write the
|
|
|
|
|
cookie file, we would warn but not exit, and end up in a state
|
|
|
|
|
where no controller could authenticate. Now we exit.
|
|
|
|
|
- If we require CookieAuthentication, stop generating a new cookie
|
|
|
|
|
every time we change any piece of our config.
|
|
|
|
|
- Refuse to start with certain directory authority keys, and
|
|
|
|
|
encourage people using them to stop.
|
|
|
|
|
- Terminate multi-line control events properly. Original patch
|
|
|
|
|
from tup.
|
|
|
|
|
- Fix a minor memory leak when we fail to find enough suitable
|
|
|
|
|
servers to choose a circuit.
|
|
|
|
|
- Stop leaking part of the descriptor when we run into a particularly
|
|
|
|
|
unparseable piece of it.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.2.16 - 2007-08-01
|
2007-10-22 10:54:32 +02:00
|
|
|
Tor 0.1.2.16 fixes a critical security vulnerability that allows a
|
|
|
|
|
remote attacker in certain situations to rewrite the user's torrc
|
|
|
|
|
configuration file. This can completely compromise anonymity of users
|
|
|
|
|
in most configurations, including those running the Vidalia bundles,
|
|
|
|
|
TorK, etc. Or worse.
|
|
|
|
|
|
2007-09-29 00:53:42 +02:00
|
|
|
o Major security fixes:
|
|
|
|
|
- Close immediately after missing authentication on control port;
|
|
|
|
|
do not allow multiple authentication attempts.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.2.15 - 2007-07-17
|
2007-10-22 10:54:32 +02:00
|
|
|
Tor 0.1.2.15 fixes several crash bugs, fixes some anonymity-related
|
|
|
|
|
problems, fixes compilation on BSD, and fixes a variety of other
|
|
|
|
|
bugs. Everybody should upgrade.
|
|
|
|
|
|
2007-09-29 00:53:42 +02:00
|
|
|
o Major bugfixes (compilation):
|
|
|
|
|
- Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- Try even harder not to dereference the first character after
|
|
|
|
|
an mmap(). Reported by lodger.
|
|
|
|
|
- Fix a crash bug in directory authorities when we re-number the
|
|
|
|
|
routerlist while inserting a new router.
|
|
|
|
|
- When the cached-routers file is an even multiple of the page size,
|
|
|
|
|
don't run off the end and crash. (Fixes bug 455; based on idea
|
|
|
|
|
from croup.)
|
|
|
|
|
- Fix eventdns.c behavior on Solaris: It is critical to include
|
|
|
|
|
orconfig.h _before_ sys/types.h, so that we can get the expected
|
|
|
|
|
definition of _FILE_OFFSET_BITS.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (security):
|
|
|
|
|
- Fix a possible buffer overrun when using BSD natd support. Bug
|
|
|
|
|
found by croup.
|
|
|
|
|
- When sending destroy cells from a circuit's origin, don't include
|
|
|
|
|
the reason for tearing down the circuit. The spec says we didn't,
|
|
|
|
|
and now we actually don't. Reported by lodger.
|
|
|
|
|
- Keep streamids from different exits on a circuit separate. This
|
|
|
|
|
bug may have allowed other routers on a given circuit to inject
|
|
|
|
|
cells into streams. Reported by lodger; fixes bug 446.
|
|
|
|
|
- If there's a never-before-connected-to guard node in our list,
|
|
|
|
|
never choose any guards past it. This way we don't expand our
|
|
|
|
|
guard list unless we need to.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (guard nodes):
|
|
|
|
|
- Weight guard selection by bandwidth, so that low-bandwidth nodes
|
|
|
|
|
don't get overused as guards.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (directory):
|
|
|
|
|
- Correctly count the number of authorities that recommend each
|
|
|
|
|
version. Previously, we were under-counting by 1.
|
|
|
|
|
- Fix a potential crash bug when we load many server descriptors at
|
|
|
|
|
once and some of them make others of them obsolete. Fixes bug 458.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (hidden services):
|
|
|
|
|
- Stop tearing down the whole circuit when the user asks for a
|
|
|
|
|
connection to a port that the hidden service didn't configure.
|
|
|
|
|
Resolves bug 444.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes (misc):
|
|
|
|
|
- On Windows, we were preventing other processes from reading
|
|
|
|
|
cached-routers while Tor was running. Reported by janbar.
|
|
|
|
|
- Fix a possible (but very unlikely) bug in picking routers by
|
|
|
|
|
bandwidth. Add a log message to confirm that it is in fact
|
|
|
|
|
unlikely. Patch from lodger.
|
|
|
|
|
- Backport a couple of memory leak fixes.
|
|
|
|
|
- Backport miscellaneous cosmetic bugfixes.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.2.14 - 2007-05-25
|
2007-10-22 10:54:32 +02:00
|
|
|
Tor 0.1.2.14 changes the addresses of two directory authorities (this
|
|
|
|
|
change especially affects those who serve or use hidden services),
|
|
|
|
|
and fixes several other crash- and security-related bugs.
|
|
|
|
|
|
2007-09-29 00:53:42 +02:00
|
|
|
o Directory authority changes:
|
|
|
|
|
- Two directory authorities (moria1 and moria2) just moved to new
|
|
|
|
|
IP addresses. This change will particularly affect those who serve
|
|
|
|
|
or use hidden services.
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (crashes):
|
|
|
|
|
- If a directory server runs out of space in the connection table
|
|
|
|
|
as it's processing a begin_dir request, it will free the exit stream
|
|
|
|
|
but leave it attached to the circuit, leading to unpredictable
|
|
|
|
|
behavior. (Reported by seeess, fixes bug 425.)
|
|
|
|
|
- Fix a bug in dirserv_remove_invalid() that would cause authorities
|
|
|
|
|
to corrupt memory under some really unlikely scenarios.
|
|
|
|
|
- Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
|
|
|
|
|
- Avoid segfaults when reading from mmaped descriptor file. (Reported
|
|
|
|
|
by lodger.)
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (security):
|
|
|
|
|
- When choosing an entry guard for a circuit, avoid using guards
|
|
|
|
|
that are in the same family as the chosen exit -- not just guards
|
|
|
|
|
that are exactly the chosen exit. (Reported by lodger.)
|
|
|
|
|
|
|
|
|
|
o Major bugfixes (resource management):
|
|
|
|
|
- If a directory authority is down, skip it when deciding where to get
|
|
|
|
|
networkstatus objects or descriptors. Otherwise we keep asking
|
|
|
|
|
every 10 seconds forever. Fixes bug 384.
|
|
|
|
|
- Count it as a failure if we fetch a valid network-status but we
|
|
|
|
|
don't want to keep it. Otherwise we'll keep fetching it and keep
|
|
|
|
|
not wanting to keep it. Fixes part of bug 422.
|
|
|
|
|
- If all of our dirservers have given us bad or no networkstatuses
|
|
|
|
|
lately, then stop hammering them once per minute even when we
|
|
|
|
|
think they're failed. Fixes another part of bug 422.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Actually set the purpose correctly for descriptors inserted with
|
|
|
|
|
purpose=controller.
|
|
|
|
|
- When we have k non-v2 authorities in our DirServer config,
|
|
|
|
|
we ignored the last k authorities in the list when updating our
|
|
|
|
|
network-statuses.
|
|
|
|
|
- Correctly back-off from requesting router descriptors that we are
|
|
|
|
|
having a hard time downloading.
|
|
|
|
|
- Read resolv.conf files correctly on platforms where read() returns
|
|
|
|
|
partial results on small file reads.
|
|
|
|
|
- Don't rebuild the entire router store every time we get 32K of
|
|
|
|
|
routers: rebuild it when the journal gets very large, or when
|
|
|
|
|
the gaps in the store get very large.
|
|
|
|
|
|
|
|
|
|
o Minor features:
|
|
|
|
|
- When routers publish SVN revisions in their router descriptors,
|
|
|
|
|
authorities now include those versions correctly in networkstatus
|
|
|
|
|
documents.
|
|
|
|
|
- Warn when using a version of libevent before 1.3b to run a server on
|
|
|
|
|
OSX or BSD: these versions interact badly with userspace threads.
|
|
|
|
|
|
|
|
|
|
|
2007-04-24 20:29:57 +02:00
|
|
|
Changes in version 0.1.2.13 - 2007-04-24
|
2007-10-22 10:54:32 +02:00
|
|
|
This release features some major anonymity fixes, such as safer path
|
|
|
|
|
selection; better client performance; faster bootstrapping, better
|
|
|
|
|
address detection, and better DNS support for servers; write limiting as
|
|
|
|
|
well as read limiting to make servers easier to run; and a huge pile of
|
|
|
|
|
other features and bug fixes. The bundles also ship with Vidalia 0.0.11.
|
|
|
|
|
|
|
|
|
|
Tor 0.1.2.13 is released in memory of Rob Levin (1955-2006), aka lilo
|
|
|
|
|
of the Freenode IRC network, remembering his patience and vision for
|
|
|
|
|
free speech on the Internet.
|
2007-04-24 20:29:57 +02:00
|
|
|
|
|
|
|
|
o Major features, client performance:
|
|
|
|
|
- Weight directory requests by advertised bandwidth. Now we can
|
|
|
|
|
let servers enable write limiting but still allow most clients to
|
|
|
|
|
succeed at their directory requests. (We still ignore weights when
|
|
|
|
|
choosing a directory authority; I hope this is a feature.)
|
|
|
|
|
- Stop overloading exit nodes -- avoid choosing them for entry or
|
|
|
|
|
middle hops when the total bandwidth available from non-exit nodes
|
|
|
|
|
is much higher than the total bandwidth available from exit nodes.
|
|
|
|
|
- Rather than waiting a fixed amount of time between retrying
|
|
|
|
|
application connections, we wait only 10 seconds for the first,
|
|
|
|
|
10 seconds for the second, and 15 seconds for each retry after
|
|
|
|
|
that. Hopefully this will improve the expected user experience.
|
|
|
|
|
- Sometimes we didn't bother sending a RELAY_END cell when an attempt
|
|
|
|
|
to open a stream fails; now we do in more cases. This should
|
|
|
|
|
make clients able to find a good exit faster in some cases, since
|
|
|
|
|
unhandleable requests will now get an error rather than timing out.
|
|
|
|
|
|
|
|
|
|
o Major features, client functionality:
|
|
|
|
|
- Implement BEGIN_DIR cells, so we can connect to a directory
|
|
|
|
|
server via TLS to do encrypted directory requests rather than
|
|
|
|
|
plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
|
|
|
|
|
config options if you like. For now, this feature only works if
|
|
|
|
|
you already have a descriptor for the destination dirserver.
|
|
|
|
|
- Add support for transparent application connections: this basically
|
|
|
|
|
bundles the functionality of trans-proxy-tor into the Tor
|
|
|
|
|
mainline. Now hosts with compliant pf/netfilter implementations
|
|
|
|
|
can redirect TCP connections straight to Tor without diverting
|
|
|
|
|
through SOCKS. (Based on patch from tup.)
|
|
|
|
|
- Add support for using natd; this allows FreeBSDs earlier than
|
|
|
|
|
5.1.2 to have ipfw send connections through Tor without using
|
|
|
|
|
SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
|
|
|
|
|
|
|
|
|
|
o Major features, servers:
|
|
|
|
|
- Setting up a dyndns name for your server is now optional: servers
|
|
|
|
|
with no hostname or IP address will learn their IP address by
|
|
|
|
|
asking the directory authorities. This code only kicks in when you
|
|
|
|
|
would normally have exited with a "no address" error. Nothing's
|
|
|
|
|
authenticated, so use with care.
|
|
|
|
|
- Directory servers now spool server descriptors, v1 directories,
|
|
|
|
|
and v2 networkstatus objects to buffers as needed rather than en
|
|
|
|
|
masse. They also mmap the cached-routers files. These steps save
|
|
|
|
|
lots of memory.
|
|
|
|
|
- Stop requiring clients to have well-formed certificates, and stop
|
|
|
|
|
checking nicknames in certificates. (Clients have certificates so
|
|
|
|
|
that they can look like Tor servers, but in the future we might want
|
|
|
|
|
to allow them to look like regular TLS clients instead. Nicknames
|
|
|
|
|
in certificates serve no purpose other than making our protocol
|
|
|
|
|
easier to recognize on the wire.) Implements proposal 106.
|
|
|
|
|
|
|
|
|
|
o Improvements on DNS support:
|
|
|
|
|
- Add "eventdns" asynchronous dns library originally based on code
|
|
|
|
|
from Adam Langley. Now we can discard the old rickety dnsworker
|
|
|
|
|
concept, and support a wider variety of DNS functions. Allows
|
|
|
|
|
multithreaded builds on NetBSD and OpenBSD again.
|
|
|
|
|
- Add server-side support for "reverse" DNS lookups (using PTR
|
|
|
|
|
records so clients can determine the canonical hostname for a given
|
|
|
|
|
IPv4 address). Only supported by servers using eventdns; servers
|
|
|
|
|
now announce in their descriptors if they don't support eventdns.
|
|
|
|
|
- Workaround for name servers (like Earthlink's) that hijack failing
|
|
|
|
|
DNS requests and replace the no-such-server answer with a "helpful"
|
|
|
|
|
redirect to an advertising-driven search portal. Also work around
|
|
|
|
|
DNS hijackers who "helpfully" decline to hijack known-invalid
|
|
|
|
|
RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
|
|
|
|
|
lets you turn it off.
|
|
|
|
|
- Servers now check for the case when common DNS requests are going to
|
|
|
|
|
wildcarded addresses (i.e. all getting the same answer), and change
|
|
|
|
|
their exit policy to reject *:* if it's happening.
|
|
|
|
|
- When asked to resolve a hostname, don't use non-exit servers unless
|
|
|
|
|
requested to do so. This allows servers with broken DNS to be
|
|
|
|
|
useful to the network.
|
|
|
|
|
- Start passing "ipv4" hints to getaddrinfo(), so servers don't do
|
|
|
|
|
useless IPv6 DNS resolves.
|
|
|
|
|
- Specify and implement client-side SOCKS5 interface for reverse DNS
|
|
|
|
|
lookups (see doc/socks-extensions.txt). Also cache them.
|
|
|
|
|
- When we change nameservers or IP addresses, reset and re-launch
|
|
|
|
|
our tests for DNS hijacking.
|
|
|
|
|
|
|
|
|
|
o Improvements on reachability testing:
|
|
|
|
|
- Servers send out a burst of long-range padding cells once they've
|
|
|
|
|
established that they're reachable. Spread them over 4 circuits,
|
|
|
|
|
so hopefully a few will be fast. This exercises bandwidth and
|
|
|
|
|
bootstraps them into the directory more quickly.
|
|
|
|
|
- When we find our DirPort to be reachable, publish a new descriptor
|
|
|
|
|
so we'll tell the world (reported by pnx).
|
|
|
|
|
- Directory authorities now only decide that routers are reachable
|
|
|
|
|
if their identity keys are as expected.
|
|
|
|
|
- Do DirPort reachability tests less often, since a single test
|
|
|
|
|
chews through many circuits before giving up.
|
|
|
|
|
- Avoid some false positives during reachability testing: don't try
|
|
|
|
|
to test via a server that's on the same /24 network as us.
|
|
|
|
|
- Start publishing one minute or so after we find our ORPort
|
|
|
|
|
to be reachable. This will help reduce the number of descriptors
|
|
|
|
|
we have for ourselves floating around, since it's quite likely
|
|
|
|
|
other things (e.g. DirPort) will change during that minute too.
|
|
|
|
|
- Routers no longer try to rebuild long-term connections to directory
|
|
|
|
|
authorities, and directory authorities no longer try to rebuild
|
|
|
|
|
long-term connections to all servers. We still don't hang up
|
|
|
|
|
connections in these two cases though -- we need to look at it
|
|
|
|
|
more carefully to avoid flapping, and we likely need to wait til
|
|
|
|
|
0.1.1.x is obsolete.
|
|
|
|
|
|
|
|
|
|
o Improvements on rate limiting:
|
|
|
|
|
- Enable write limiting as well as read limiting. Now we sacrifice
|
|
|
|
|
capacity if we're pushing out lots of directory traffic, rather
|
|
|
|
|
than overrunning the user's intended bandwidth limits.
|
|
|
|
|
- Include TLS overhead when counting bandwidth usage; previously, we
|
|
|
|
|
would count only the bytes sent over TLS, but not the bytes used
|
|
|
|
|
to send them.
|
|
|
|
|
- Servers decline directory requests much more aggressively when
|
|
|
|
|
they're low on bandwidth. Otherwise they end up queueing more and
|
|
|
|
|
more directory responses, which can't be good for latency.
|
|
|
|
|
- But never refuse directory requests from local addresses.
|
|
|
|
|
- Be willing to read or write on local connections (e.g. controller
|
|
|
|
|
connections) even when the global rate limiting buckets are empty.
|
|
|
|
|
- Flush local controller connection buffers periodically as we're
|
|
|
|
|
writing to them, so we avoid queueing 4+ megabytes of data before
|
|
|
|
|
trying to flush.
|
|
|
|
|
- Revise and clean up the torrc.sample that we ship with; add
|
|
|
|
|
a section for BandwidthRate and BandwidthBurst.
|
|
|
|
|
|
|
|
|
|
o Major features, NT services:
|
|
|
|
|
- Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
|
|
|
|
|
command-line flag so that admins can override the default by saying
|
|
|
|
|
"tor --service install --user "SomeUser"". This will not affect
|
|
|
|
|
existing installed services. Also, warn the user that the service
|
|
|
|
|
will look for its configuration file in the service user's
|
|
|
|
|
%appdata% directory. (We can't do the "hardwire the user's appdata
|
|
|
|
|
directory" trick any more, since we may not have read access to that
|
|
|
|
|
directory.)
|
|
|
|
|
- Support running the Tor service with a torrc not in the same
|
|
|
|
|
directory as tor.exe and default to using the torrc located in
|
|
|
|
|
the %appdata%\Tor\ of the user who installed the service. Patch
|
|
|
|
|
from Matt Edman.
|
|
|
|
|
- Add an --ignore-missing-torrc command-line option so that we can
|
|
|
|
|
get the "use sensible defaults if the configuration file doesn't
|
|
|
|
|
exist" behavior even when specifying a torrc location on the
|
|
|
|
|
command line.
|
|
|
|
|
- When stopping an NT service, wait up to 10 sec for it to actually
|
|
|
|
|
stop. (Patch from Matt Edman; resolves bug 295.)
|
|
|
|
|
|
|
|
|
|
o Directory authority improvements:
|
|
|
|
|
- Stop letting hibernating or obsolete servers affect uptime and
|
|
|
|
|
bandwidth cutoffs.
|
|
|
|
|
- Stop listing hibernating servers in the v1 directory.
|
|
|
|
|
- Authorities no longer recommend exits as guards if this would shift
|
|
|
|
|
too much load to the exit nodes.
|
|
|
|
|
- Authorities now specify server versions in networkstatus. This adds
|
|
|
|
|
about 2% to the size of compressed networkstatus docs, and allows
|
|
|
|
|
clients to tell which servers support BEGIN_DIR and which don't.
|
|
|
|
|
The implementation is forward-compatible with a proposed future
|
|
|
|
|
protocol version scheme not tied to Tor versions.
|
|
|
|
|
- DirServer configuration lines now have an orport= option so
|
|
|
|
|
clients can open encrypted tunnels to the authorities without
|
|
|
|
|
having downloaded their descriptors yet. Enabled for moria1,
|
|
|
|
|
moria2, tor26, and lefkada now in the default configuration.
|
|
|
|
|
- Add a BadDirectory flag to network status docs so that authorities
|
|
|
|
|
can (eventually) tell clients about caches they believe to be
|
|
|
|
|
broken. Not used yet.
|
|
|
|
|
- Allow authorities to list nodes as bad exits in their
|
|
|
|
|
approved-routers file by fingerprint or by address. If most
|
|
|
|
|
authorities set a BadExit flag for a server, clients don't think
|
|
|
|
|
of it as a general-purpose exit. Clients only consider authorities
|
|
|
|
|
that advertise themselves as listing bad exits.
|
|
|
|
|
- Patch from Steve Hildrey: Generate network status correctly on
|
|
|
|
|
non-versioning dirservers.
|
|
|
|
|
- Have directory authorities allow larger amounts of drift in uptime
|
|
|
|
|
without replacing the server descriptor: previously, a server that
|
|
|
|
|
restarted every 30 minutes could have 48 "interesting" descriptors
|
|
|
|
|
per day.
|
|
|
|
|
- Reserve the nickname "Unnamed" for routers that can't pick
|
|
|
|
|
a hostname: any router can call itself Unnamed; directory
|
|
|
|
|
authorities will never allocate Unnamed to any particular router;
|
|
|
|
|
clients won't believe that any router is the canonical Unnamed.
|
|
|
|
|
|
|
|
|
|
o Directory mirrors and clients:
|
|
|
|
|
- Discard any v1 directory info that's over 1 month old (for
|
|
|
|
|
directories) or over 1 week old (for running-routers lists).
|
|
|
|
|
- Clients track responses with status 503 from dirservers. After a
|
|
|
|
|
dirserver has given us a 503, we try not to use it until an hour has
|
|
|
|
|
gone by, or until we have no dirservers that haven't given us a 503.
|
|
|
|
|
- When we get a 503 from a directory, and we're not a server, we no
|
|
|
|
|
longer count the failure against the total number of failures
|
|
|
|
|
allowed for the object we're trying to download.
|
|
|
|
|
- Prepare for servers to publish descriptors less often: never
|
|
|
|
|
discard a descriptor simply for being too old until either it is
|
|
|
|
|
recommended by no authorities, or until we get a better one for
|
|
|
|
|
the same router. Make caches consider retaining old recommended
|
|
|
|
|
routers for even longer.
|
|
|
|
|
- Directory servers now provide 'Pragma: no-cache' and 'Expires'
|
|
|
|
|
headers for content, so that we can work better in the presence of
|
|
|
|
|
caching HTTP proxies.
|
|
|
|
|
- Stop fetching descriptors if you're not a dir mirror and you
|
|
|
|
|
haven't tried to establish any circuits lately. (This currently
|
|
|
|
|
causes some dangerous behavior, because when you start up again
|
|
|
|
|
you'll use your ancient server descriptors.)
|
|
|
|
|
|
|
|
|
|
o Major fixes, crashes:
|
|
|
|
|
- Stop crashing when the controller asks us to resetconf more than
|
|
|
|
|
one config option at once. (Vidalia 0.0.11 does this.)
|
|
|
|
|
- Fix a longstanding obscure crash bug that could occur when we run
|
|
|
|
|
out of DNS worker processes, if we're not using eventdns. (Resolves
|
|
|
|
|
bug 390.)
|
|
|
|
|
- Fix an assert that could trigger if a controller quickly set then
|
|
|
|
|
cleared EntryNodes. (Bug found by Udo van den Heuvel.)
|
|
|
|
|
- Avoid crash when telling controller about stream-status and a
|
|
|
|
|
stream is detached.
|
|
|
|
|
- Avoid sending junk to controllers or segfaulting when a controller
|
|
|
|
|
uses EVENT_NEW_DESC with verbose nicknames.
|
|
|
|
|
- Stop triggering asserts if the controller tries to extend hidden
|
|
|
|
|
service circuits (reported by mwenge).
|
|
|
|
|
- If we start a server with ClientOnly 1, then set ClientOnly to 0
|
|
|
|
|
and hup, stop triggering an assert based on an empty onion_key.
|
|
|
|
|
- Mask out all signals in sub-threads; only the libevent signal
|
|
|
|
|
handler should be processing them. This should prevent some crashes
|
|
|
|
|
on some machines using pthreads. (Patch from coderman.)
|
|
|
|
|
- Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
|
|
|
|
|
|
|
|
|
|
o Major fixes, anonymity/security:
|
|
|
|
|
- Automatically avoid picking more than one node from the same
|
|
|
|
|
/16 network when constructing a circuit. Add an
|
|
|
|
|
"EnforceDistinctSubnets" option to let people disable it if they
|
|
|
|
|
want to operate private test networks on a single subnet.
|
|
|
|
|
- When generating bandwidth history, round down to the nearest
|
|
|
|
|
1k. When storing accounting data, round up to the nearest 1k.
|
|
|
|
|
- When we're running as a server, remember when we last rotated onion
|
|
|
|
|
keys, so that we will rotate keys once they're a week old even if
|
|
|
|
|
we never stay up for a week ourselves.
|
|
|
|
|
- If a client asked for a server by name, and there's a named server
|
|
|
|
|
in our network-status but we don't have its descriptor yet, we
|
|
|
|
|
could return an unnamed server instead.
|
|
|
|
|
- Reject (most) attempts to use Tor circuits with length one. (If
|
|
|
|
|
many people start using Tor as a one-hop proxy, exit nodes become
|
|
|
|
|
a more attractive target for compromise.)
|
|
|
|
|
- Just because your DirPort is open doesn't mean people should be
|
|
|
|
|
able to remotely teach you about hidden service descriptors. Now
|
|
|
|
|
only accept rendezvous posts if you've got HSAuthoritativeDir set.
|
|
|
|
|
- Fix a potential race condition in the rpm installer. Found by
|
|
|
|
|
Stefan Nordhausen.
|
|
|
|
|
- Do not log IPs with TLS failures for incoming TLS
|
|
|
|
|
connections. (Fixes bug 382.)
|
|
|
|
|
|
|
|
|
|
o Major fixes, other:
|
|
|
|
|
- If our system clock jumps back in time, don't publish a negative
|
|
|
|
|
uptime in the descriptor.
|
|
|
|
|
- When we start during an accounting interval before it's time to wake
|
|
|
|
|
up, remember to wake up at the correct time. (May fix bug 342.)
|
|
|
|
|
- Previously, we would cache up to 16 old networkstatus documents
|
|
|
|
|
indefinitely, if they came from nontrusted authorities. Now we
|
|
|
|
|
discard them if they are more than 10 days old.
|
|
|
|
|
- When we have a state file we cannot parse, tell the user and
|
|
|
|
|
move it aside. Now we avoid situations where the user starts
|
|
|
|
|
Tor in 1904, Tor writes a state file with that timestamp in it,
|
|
|
|
|
the user fixes her clock, and Tor refuses to start.
|
|
|
|
|
- Publish a new descriptor after we hup/reload. This is important
|
|
|
|
|
if our config has changed such that we'll want to start advertising
|
|
|
|
|
our DirPort now, etc.
|
|
|
|
|
- If we are using an exit enclave and we can't connect, e.g. because
|
|
|
|
|
its webserver is misconfigured to not listen on localhost, then
|
|
|
|
|
back off and try connecting from somewhere else before we fail.
|
|
|
|
|
|
|
|
|
|
o New config options or behaviors:
|
|
|
|
|
- When EntryNodes are configured, rebuild the guard list to contain,
|
|
|
|
|
in order: the EntryNodes that were guards before; the rest of the
|
|
|
|
|
EntryNodes; the nodes that were guards before.
|
|
|
|
|
- Do not warn when individual nodes in the configuration's EntryNodes,
|
|
|
|
|
ExitNodes, etc are down: warn only when all possible nodes
|
|
|
|
|
are down. (Fixes bug 348.)
|
|
|
|
|
- Put a lower-bound on MaxAdvertisedBandwidth.
|
|
|
|
|
- Start using the state file to store bandwidth accounting data:
|
|
|
|
|
the bw_accounting file is now obsolete. We'll keep generating it
|
|
|
|
|
for a while for people who are still using 0.1.2.4-alpha.
|
|
|
|
|
- Try to batch changes to the state file so that we do as few
|
|
|
|
|
disk writes as possible while still storing important things in
|
|
|
|
|
a timely fashion.
|
|
|
|
|
- The state file and the bw_accounting file get saved less often when
|
|
|
|
|
the AvoidDiskWrites config option is set.
|
|
|
|
|
- Make PIDFile work on Windows.
|
|
|
|
|
- Add internal descriptions for a bunch of configuration options:
|
|
|
|
|
accessible via controller interface and in comments in saved
|
|
|
|
|
options files.
|
|
|
|
|
- Reject *:563 (NNTPS) in the default exit policy. We already reject
|
|
|
|
|
NNTP by default, so this seems like a sensible addition.
|
|
|
|
|
- Clients now reject hostnames with invalid characters. This should
|
|
|
|
|
avoid some inadvertent info leaks. Add an option
|
|
|
|
|
AllowNonRFC953Hostnames to disable this behavior, in case somebody
|
|
|
|
|
is running a private network with hosts called @, !, and #.
|
|
|
|
|
- Check for addresses with invalid characters at the exit as well,
|
|
|
|
|
and warn less verbosely when they fail. You can override this by
|
|
|
|
|
setting ServerDNSAllowNonRFC953Addresses to 1.
|
|
|
|
|
- Remove some options that have been deprecated since at least
|
|
|
|
|
0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
|
|
|
|
|
SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
|
|
|
|
|
to set log options. Mark PathlenCoinWeight as obsolete.
|
|
|
|
|
- Stop accepting certain malformed ports in configured exit policies.
|
|
|
|
|
- When the user uses bad syntax in the Log config line, stop
|
|
|
|
|
suggesting other bad syntax as a replacement.
|
|
|
|
|
- Add new config option "ResolvConf" to let the server operator
|
|
|
|
|
choose an alternate resolve.conf file when using eventdns.
|
|
|
|
|
- If one of our entry guards is on the ExcludeNodes list, or the
|
|
|
|
|
directory authorities don't think it's a good guard, treat it as
|
|
|
|
|
if it were unlisted: stop using it as a guard, and throw it off
|
|
|
|
|
the guards list if it stays that way for a long time.
|
|
|
|
|
- Allow directory authorities to be marked separately as authorities
|
|
|
|
|
for the v1 directory protocol, the v2 directory protocol, and
|
|
|
|
|
as hidden service directories, to make it easier to retire old
|
|
|
|
|
authorities. V1 authorities should set "HSAuthoritativeDir 1"
|
|
|
|
|
to continue being hidden service authorities too.
|
|
|
|
|
- Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
|
|
|
|
|
- Make TrackExitHosts case-insensitive, and fix the behavior of
|
|
|
|
|
".suffix" TrackExitHosts items to avoid matching in the middle of
|
|
|
|
|
an address.
|
|
|
|
|
- New DirPort behavior: if you have your dirport set, you download
|
|
|
|
|
descriptors aggressively like a directory mirror, whether or not
|
|
|
|
|
your ORPort is set.
|
|
|
|
|
|
|
|
|
|
o Docs:
|
|
|
|
|
- Create a new file ReleaseNotes which was the old ChangeLog. The
|
|
|
|
|
new ChangeLog file now includes the notes for all development
|
|
|
|
|
versions too.
|
|
|
|
|
- Add a new address-spec.txt document to describe our special-case
|
|
|
|
|
addresses: .exit, .onion, and .noconnnect.
|
|
|
|
|
- Fork the v1 directory protocol into its own spec document,
|
|
|
|
|
and mark dir-spec.txt as the currently correct (v2) spec.
|
|
|
|
|
|
|
|
|
|
o Packaging, porting, and contrib
|
|
|
|
|
- "tor --verify-config" now exits with -1(255) or 0 depending on
|
|
|
|
|
whether the config options are bad or good.
|
|
|
|
|
- The Debian package now uses --verify-config when (re)starting,
|
|
|
|
|
to distinguish configuration errors from other errors.
|
|
|
|
|
- Adapt a patch from goodell to let the contrib/exitlist script
|
|
|
|
|
take arguments rather than require direct editing.
|
|
|
|
|
- Prevent the contrib/exitlist script from printing the same
|
|
|
|
|
result more than once.
|
|
|
|
|
- Add support to tor-resolve tool for reverse lookups and SOCKS5.
|
|
|
|
|
- In the hidden service example in torrc.sample, stop recommending
|
|
|
|
|
esoteric and discouraged hidden service options.
|
|
|
|
|
- Patch from Michael Mohr to contrib/cross.sh, so it checks more
|
|
|
|
|
values before failing, and always enables eventdns.
|
|
|
|
|
- Try to detect Windows correctly when cross-compiling.
|
|
|
|
|
- Libevent-1.2 exports, but does not define in its headers, strlcpy.
|
|
|
|
|
Try to fix this in configure.in by checking for most functions
|
|
|
|
|
before we check for libevent.
|
|
|
|
|
- Update RPMs to require libevent 1.2.
|
|
|
|
|
- Experimentally re-enable kqueue on OSX when using libevent 1.1b
|
|
|
|
|
or later. Log when we are doing this, so we can diagnose it when
|
|
|
|
|
it fails. (Also, recommend libevent 1.1b for kqueue and
|
|
|
|
|
win32 methods; deprecate libevent 1.0b harder; make libevent
|
|
|
|
|
recommendation system saner.)
|
|
|
|
|
- Build with recent (1.3+) libevents on platforms that do not
|
|
|
|
|
define the nonstandard types "u_int8_t" and friends.
|
|
|
|
|
- Remove architecture from OS X builds. The official builds are
|
|
|
|
|
now universal binaries.
|
|
|
|
|
- Run correctly on OS X platforms with case-sensitive filesystems.
|
|
|
|
|
- Correctly set maximum connection limit on Cygwin. (This time
|
|
|
|
|
for sure!)
|
|
|
|
|
- Start compiling on MinGW on Windows (patches from Mike Chiussi
|
|
|
|
|
and many others).
|
|
|
|
|
- Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
|
|
|
|
|
- Finally fix the openssl warnings from newer gccs that believe that
|
|
|
|
|
ignoring a return value is okay, but casting a return value and
|
|
|
|
|
then ignoring it is a sign of madness.
|
|
|
|
|
- On architectures where sizeof(int)>4, still clamp declarable
|
|
|
|
|
bandwidth to INT32_MAX.
|
|
|
|
|
|
|
|
|
|
o Minor features, controller:
|
|
|
|
|
- Warn the user when an application uses the obsolete binary v0
|
|
|
|
|
control protocol. We're planning to remove support for it during
|
|
|
|
|
the next development series, so it's good to give people some
|
|
|
|
|
advance warning.
|
|
|
|
|
- Add STREAM_BW events to report per-entry-stream bandwidth
|
|
|
|
|
use. (Patch from Robert Hogan.)
|
|
|
|
|
- Rate-limit SIGNEWNYM signals in response to controllers that
|
|
|
|
|
impolitely generate them for every single stream. (Patch from
|
|
|
|
|
mwenge; closes bug 394.)
|
|
|
|
|
- Add a REMAP status to stream events to note that a stream's
|
|
|
|
|
address has changed because of a cached address or a MapAddress
|
|
|
|
|
directive.
|
|
|
|
|
- Make REMAP stream events have a SOURCE (cache or exit), and
|
|
|
|
|
make them generated in every case where we get a successful
|
|
|
|
|
connected or resolved cell.
|
|
|
|
|
- Track reasons for OR connection failure; make these reasons
|
|
|
|
|
available via the controller interface. (Patch from Mike Perry.)
|
|
|
|
|
- Add a SOCKS_BAD_HOSTNAME client status event so controllers
|
|
|
|
|
can learn when clients are sending malformed hostnames to Tor.
|
|
|
|
|
- Specify and implement some of the controller status events.
|
|
|
|
|
- Have GETINFO dir/status/* work on hosts with DirPort disabled.
|
|
|
|
|
- Reimplement GETINFO so that info/names stays in sync with the
|
|
|
|
|
actual keys.
|
|
|
|
|
- Implement "GETINFO fingerprint".
|
|
|
|
|
- Implement "SETEVENTS GUARD" so controllers can get updates on
|
|
|
|
|
entry guard status as it changes.
|
|
|
|
|
- Make all connections to addresses of the form ".noconnect"
|
|
|
|
|
immediately get closed. This lets application/controller combos
|
|
|
|
|
successfully test whether they're talking to the same Tor by
|
|
|
|
|
watching for STREAM events.
|
|
|
|
|
- Add a REASON field to CIRC events; for backward compatibility, this
|
|
|
|
|
field is sent only to controllers that have enabled the extended
|
|
|
|
|
event format. Also, add additional reason codes to explain why
|
|
|
|
|
a given circuit has been destroyed or truncated. (Patches from
|
|
|
|
|
Mike Perry)
|
|
|
|
|
- Add a REMOTE_REASON field to extended CIRC events to tell the
|
|
|
|
|
controller why a remote OR told us to close a circuit.
|
|
|
|
|
- Stream events also now have REASON and REMOTE_REASON fields,
|
|
|
|
|
working much like those for circuit events.
|
|
|
|
|
- There's now a GETINFO ns/... field so that controllers can ask Tor
|
|
|
|
|
about the current status of a router.
|
|
|
|
|
- A new event type "NS" to inform a controller when our opinion of
|
|
|
|
|
a router's status has changed.
|
|
|
|
|
- Add a GETINFO events/names and GETINFO features/names so controllers
|
|
|
|
|
can tell which events and features are supported.
|
|
|
|
|
- A new CLEARDNSCACHE signal to allow controllers to clear the
|
|
|
|
|
client-side DNS cache without expiring circuits.
|
|
|
|
|
- Fix CIRC controller events so that controllers can learn the
|
|
|
|
|
identity digests of non-Named servers used in circuit paths.
|
|
|
|
|
- Let controllers ask for more useful identifiers for servers. Instead
|
|
|
|
|
of learning identity digests for un-Named servers and nicknames
|
|
|
|
|
for Named servers, the new identifiers include digest, nickname,
|
|
|
|
|
and indication of Named status. Off by default; see control-spec.txt
|
|
|
|
|
for more information.
|
|
|
|
|
- Add a "getinfo address" controller command so it can display Tor's
|
|
|
|
|
best guess to the user.
|
|
|
|
|
- New controller event to alert the controller when our server
|
|
|
|
|
descriptor has changed.
|
|
|
|
|
- Give more meaningful errors on controller authentication failure.
|
|
|
|
|
- Export the default exit policy via the control port, so controllers
|
|
|
|
|
don't need to guess what it is / will be later.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes, controller:
|
|
|
|
|
- When creating a circuit via the controller, send a 'launched'
|
|
|
|
|
event when we're done, so we follow the spec better.
|
|
|
|
|
- Correct the control spec to match how the code actually responds
|
|
|
|
|
to 'getinfo addr-mappings/*'. Reported by daejees.
|
|
|
|
|
- The control spec described a GUARDS event, but the code
|
|
|
|
|
implemented a GUARD event. Standardize on GUARD, but let people
|
|
|
|
|
ask for GUARDS too. Reported by daejees.
|
|
|
|
|
- Give the controller END_STREAM_REASON_DESTROY events _before_ we
|
|
|
|
|
clear the corresponding on_circuit variable, and remember later
|
|
|
|
|
that we don't need to send a redundant CLOSED event. (Resolves part
|
|
|
|
|
3 of bug 367.)
|
|
|
|
|
- Report events where a resolve succeeded or where we got a socks
|
|
|
|
|
protocol error correctly, rather than calling both of them
|
|
|
|
|
"INTERNAL".
|
|
|
|
|
- Change reported stream target addresses to IP consistently when
|
|
|
|
|
we finally get the IP from an exit node.
|
|
|
|
|
- Send log messages to the controller even if they happen to be very
|
|
|
|
|
long.
|
|
|
|
|
- Flush ERR-level controller status events just like we currently
|
|
|
|
|
flush ERR-level log events, so that a Tor shutdown doesn't prevent
|
|
|
|
|
the controller from learning about current events.
|
|
|
|
|
- Report the circuit number correctly in STREAM CLOSED events. Bug
|
|
|
|
|
reported by Mike Perry.
|
|
|
|
|
- Do not report bizarre values for results of accounting GETINFOs
|
|
|
|
|
when the last second's write or read exceeds the allotted bandwidth.
|
|
|
|
|
- Report "unrecognized key" rather than an empty string when the
|
|
|
|
|
controller tries to fetch a networkstatus that doesn't exist.
|
|
|
|
|
- When the controller does a "GETINFO network-status", tell it
|
|
|
|
|
about even those routers whose descriptors are very old, and use
|
|
|
|
|
long nicknames where appropriate.
|
|
|
|
|
- Fix handling of verbose nicknames with ORCONN controller events:
|
|
|
|
|
make them show up exactly when requested, rather than exactly when
|
|
|
|
|
not requested.
|
|
|
|
|
- Controller signals now work on non-Unix platforms that don't define
|
|
|
|
|
SIGUSR1 and SIGUSR2 the way we expect.
|
|
|
|
|
- Respond to SIGNAL command before we execute the signal, in case
|
|
|
|
|
the signal shuts us down. Suggested by Karsten Loesing.
|
|
|
|
|
- Handle reporting OR_CONN_EVENT_NEW events to the controller.
|
|
|
|
|
|
|
|
|
|
o Minor features, code performance:
|
|
|
|
|
- Major performance improvement on inserting descriptors: change
|
|
|
|
|
algorithm from O(n^2) to O(n).
|
|
|
|
|
- Do not rotate onion key immediately after setting it for the first
|
|
|
|
|
time.
|
|
|
|
|
- Call router_have_min_dir_info half as often. (This is showing up in
|
|
|
|
|
some profiles, but not others.)
|
|
|
|
|
- When using GCC, make log_debug never get called at all, and its
|
|
|
|
|
arguments never get evaluated, when no debug logs are configured.
|
|
|
|
|
(This is showing up in some profiles, but not others.)
|
|
|
|
|
- Statistics dumped by -USR2 now include a breakdown of public key
|
|
|
|
|
operations, for profiling.
|
|
|
|
|
- Make the common memory allocation path faster on machines where
|
|
|
|
|
malloc(0) returns a pointer.
|
|
|
|
|
- Split circuit_t into origin_circuit_t and or_circuit_t, and
|
|
|
|
|
split connection_t into edge, or, dir, control, and base structs.
|
|
|
|
|
These will save quite a bit of memory on busy servers, and they'll
|
|
|
|
|
also help us track down bugs in the code and bugs in the spec.
|
|
|
|
|
- Use OpenSSL's AES implementation on platforms where it's faster.
|
|
|
|
|
This could save us as much as 10% CPU usage.
|
|
|
|
|
|
|
|
|
|
o Minor features, descriptors and descriptor handling:
|
|
|
|
|
- Avoid duplicate entries on MyFamily line in server descriptor.
|
|
|
|
|
- When Tor receives a router descriptor that it asked for, but
|
|
|
|
|
no longer wants (because it has received fresh networkstatuses
|
|
|
|
|
in the meantime), do not warn the user. Cache the descriptor if
|
|
|
|
|
we're a cache; drop it if we aren't.
|
|
|
|
|
- Servers no longer ever list themselves in their "family" line,
|
|
|
|
|
even if configured to do so. This makes it easier to configure
|
|
|
|
|
family lists conveniently.
|
|
|
|
|
|
|
|
|
|
o Minor fixes, confusing/misleading log messages:
|
|
|
|
|
- Display correct results when reporting which versions are
|
|
|
|
|
recommended, and how recommended they are. (Resolves bug 383.)
|
|
|
|
|
- Inform the server operator when we decide not to advertise a
|
|
|
|
|
DirPort due to AccountingMax enabled or a low BandwidthRate.
|
|
|
|
|
- Only include function names in log messages for info/debug messages.
|
|
|
|
|
For notice/warn/err, the content of the message should be clear on
|
|
|
|
|
its own, and printing the function name only confuses users.
|
|
|
|
|
- Remove even more protocol-related warnings from Tor server logs,
|
|
|
|
|
such as bad TLS handshakes and malformed begin cells.
|
|
|
|
|
- Fix bug 314: Tor clients issued "unsafe socks" warnings even
|
|
|
|
|
when the IP address is mapped through MapAddress to a hostname.
|
|
|
|
|
- Fix misleading log messages: an entry guard that is "unlisted",
|
|
|
|
|
as well as not known to be "down" (because we've never heard
|
|
|
|
|
of it), is not therefore "up".
|
|
|
|
|
|
|
|
|
|
o Minor fixes, old/obsolete behavior:
|
|
|
|
|
- Start assuming we can use a create_fast cell if we don't know
|
|
|
|
|
what version a router is running.
|
|
|
|
|
- We no longer look for identity and onion keys in "identity.key" and
|
|
|
|
|
"onion.key" -- these were replaced by secret_id_key and
|
|
|
|
|
secret_onion_key in 0.0.8pre1.
|
|
|
|
|
- We no longer require unrecognized directory entries to be
|
|
|
|
|
preceded by "opt".
|
|
|
|
|
- Drop compatibility with obsolete Tors that permit create cells
|
|
|
|
|
to have the wrong circ_id_type.
|
|
|
|
|
- Remove code to special-case "-cvs" ending, since it has not
|
|
|
|
|
actually mattered since 0.0.9.
|
|
|
|
|
- Don't re-write the fingerprint file every restart, unless it has
|
|
|
|
|
changed.
|
|
|
|
|
|
|
|
|
|
o Minor fixes, misc client-side behavior:
|
|
|
|
|
- Always remove expired routers and networkstatus docs before checking
|
|
|
|
|
whether we have enough information to build circuits. (Fixes
|
|
|
|
|
bug 373.)
|
|
|
|
|
- When computing clock skew from directory HTTP headers, consider what
|
|
|
|
|
time it was when we finished asking for the directory, not what
|
|
|
|
|
time it is now.
|
|
|
|
|
- Make our socks5 handling more robust to broken socks clients:
|
|
|
|
|
throw out everything waiting on the buffer in between socks
|
|
|
|
|
handshake phases, since they can't possibly (so the theory
|
|
|
|
|
goes) have predicted what we plan to respond to them.
|
|
|
|
|
- Expire socks connections if they spend too long waiting for the
|
|
|
|
|
handshake to finish. Previously we would let them sit around for
|
|
|
|
|
days, if the connecting application didn't close them either.
|
|
|
|
|
- And if the socks handshake hasn't started, don't send a
|
|
|
|
|
"DNS resolve socks failed" handshake reply; just close it.
|
|
|
|
|
- If the user asks to use invalid exit nodes, be willing to use
|
|
|
|
|
unstable ones.
|
|
|
|
|
- Track unreachable entry guards correctly: don't conflate
|
|
|
|
|
'unreachable by us right now' with 'listed as down by the directory
|
|
|
|
|
authorities'. With the old code, if a guard was unreachable by us
|
|
|
|
|
but listed as running, it would clog our guard list forever.
|
|
|
|
|
- Behave correctly in case we ever have a network with more than
|
|
|
|
|
2GB/s total advertised capacity.
|
|
|
|
|
- Claim a commonname of Tor, rather than TOR, in TLS handshakes.
|
|
|
|
|
- Fix a memory leak when we ask for "all" networkstatuses and we
|
|
|
|
|
get one we don't recognize.
|
|
|
|
|
|
|
|
|
|
|
2007-01-25 21:44:48 +01:00
|
|
|
Changes in version 0.1.1.26 - 2006-12-14
|
|
|
|
|
o Security bugfixes:
|
|
|
|
|
- Stop sending the HttpProxyAuthenticator string to directory
|
|
|
|
|
servers when directory connections are tunnelled through Tor.
|
|
|
|
|
- Clients no longer store bandwidth history in the state file.
|
|
|
|
|
- Do not log introduction points for hidden services if SafeLogging
|
|
|
|
|
is set.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix an assert failure when a directory authority sets
|
|
|
|
|
AuthDirRejectUnlisted and then receives a descriptor from an
|
|
|
|
|
unlisted router (reported by seeess).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.25 - 2006-11-04
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- When a client asks us to resolve (rather than connect to)
|
|
|
|
|
an address, and we have a cached answer, give them the cached
|
|
|
|
|
answer. Previously, we would give them no answer at all.
|
|
|
|
|
- We were building exactly the wrong circuits when we predict
|
|
|
|
|
hidden service requirements, meaning Tor would have to build all
|
|
|
|
|
its circuits on demand.
|
|
|
|
|
- If none of our live entry guards have a high uptime, but we
|
|
|
|
|
require a guard with a high uptime, try adding a new guard before
|
|
|
|
|
we give up on the requirement. This patch should make long-lived
|
|
|
|
|
connections more stable on average.
|
|
|
|
|
- When testing reachability of our DirPort, don't launch new
|
|
|
|
|
tests when there's already one in progress -- unreachable
|
|
|
|
|
servers were stacking up dozens of testing streams.
|
|
|
|
|
|
|
|
|
|
o Security bugfixes:
|
|
|
|
|
- When the user sends a NEWNYM signal, clear the client-side DNS
|
|
|
|
|
cache too. Otherwise we continue to act on previous information.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Avoid a memory corruption bug when creating a hash table for
|
|
|
|
|
the first time.
|
|
|
|
|
- Avoid possibility of controller-triggered crash when misusing
|
|
|
|
|
certain commands from a v0 controller on platforms that do not
|
|
|
|
|
handle printf("%s",NULL) gracefully.
|
|
|
|
|
- Avoid infinite loop on unexpected controller input.
|
|
|
|
|
- Don't log spurious warnings when we see a circuit close reason we
|
|
|
|
|
don't recognize; it's probably just from a newer version of Tor.
|
|
|
|
|
- Add Vidalia to the OS X uninstaller script, so when we uninstall
|
|
|
|
|
Tor/Privoxy we also uninstall Vidalia.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.24 - 2006-09-29
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Allow really slow clients to not hang up five minutes into their
|
|
|
|
|
directory downloads (suggested by Adam J. Richter).
|
|
|
|
|
- Fix major performance regression from 0.1.0.x: instead of checking
|
|
|
|
|
whether we have enough directory information every time we want to
|
|
|
|
|
do something, only check when the directory information has changed.
|
|
|
|
|
This should improve client CPU usage by 25-50%.
|
|
|
|
|
- Don't crash if, after a server has been running for a while,
|
|
|
|
|
it can't resolve its hostname.
|
|
|
|
|
- When a client asks us to resolve (not connect to) an address,
|
|
|
|
|
and we have a cached answer, give them the cached answer.
|
|
|
|
|
Previously, we would give them no answer at all.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Allow Tor to start when RunAsDaemon is set but no logs are set.
|
|
|
|
|
- Don't crash when the controller receives a third argument to an
|
|
|
|
|
"extendcircuit" request.
|
|
|
|
|
- Controller protocol fixes: fix encoding in "getinfo addr-mappings"
|
|
|
|
|
response; fix error code when "getinfo dir/status/" fails.
|
|
|
|
|
- Fix configure.in to not produce broken configure files with
|
|
|
|
|
more recent versions of autoconf. Thanks to Clint for his auto*
|
|
|
|
|
voodoo.
|
|
|
|
|
- Fix security bug on NetBSD that could allow someone to force
|
|
|
|
|
uninitialized RAM to be sent to a server's DNS resolver. This
|
|
|
|
|
only affects NetBSD and other platforms that do not bounds-check
|
|
|
|
|
tolower().
|
|
|
|
|
- Warn user when using libevent 1.1a or earlier with win32 or kqueue
|
|
|
|
|
methods: these are known to be buggy.
|
|
|
|
|
- If we're a directory mirror and we ask for "all" network status
|
|
|
|
|
documents, we would discard status documents from authorities
|
|
|
|
|
we don't recognize.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.23 - 2006-07-30
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fast Tor servers, especially exit nodes, were triggering asserts
|
|
|
|
|
due to a bug in handling the list of pending DNS resolves. Some
|
|
|
|
|
bugs still remain here; we're hunting them.
|
|
|
|
|
- Entry guards could crash clients by sending unexpected input.
|
|
|
|
|
- More fixes on reachability testing: if you find yourself reachable,
|
|
|
|
|
then don't ever make any client requests (so you stop predicting
|
|
|
|
|
circuits), then hup or have your clock jump, then later your IP
|
|
|
|
|
changes, you won't think circuits are working, so you won't try to
|
|
|
|
|
test reachability, so you won't publish.
|
|
|
|
|
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Avoid a crash if the controller does a resetconf firewallports
|
|
|
|
|
and then a setconf fascistfirewall=1.
|
|
|
|
|
- Avoid an integer underflow when the dir authority decides whether
|
|
|
|
|
a router is stable: we might wrongly label it stable, and compute
|
|
|
|
|
a slightly wrong median stability, when a descriptor is published
|
|
|
|
|
later than now.
|
|
|
|
|
- Fix a place where we might trigger an assert if we can't build our
|
|
|
|
|
own server descriptor yet.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.22 - 2006-07-05
|
|
|
|
|
o Major bugfixes:
|
|
|
|
|
- Fix a big bug that was causing servers to not find themselves
|
|
|
|
|
reachable if they changed IP addresses. Since only 0.1.1.22+
|
|
|
|
|
servers can do reachability testing correctly, now we automatically
|
|
|
|
|
make sure to test via one of these.
|
|
|
|
|
- Fix to allow clients and mirrors to learn directory info from
|
|
|
|
|
descriptor downloads that get cut off partway through.
|
|
|
|
|
- Directory authorities had a bug in deciding if a newly published
|
|
|
|
|
descriptor was novel enough to make everybody want a copy -- a few
|
|
|
|
|
servers seem to be publishing new descriptors many times a minute.
|
|
|
|
|
o Minor bugfixes:
|
|
|
|
|
- Fix a rare bug that was causing some servers to complain about
|
|
|
|
|
"closing wedged cpuworkers" and skip some circuit create requests.
|
|
|
|
|
- Make the Exit flag in directory status documents actually work.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.21 - 2006-06-10
|
|
|
|
|
o Crash and assert fixes from 0.1.1.20:
|
|
|
|
|
- Fix a rare crash on Tor servers that have enabled hibernation.
|
|
|
|
|
- Fix a seg fault on startup for Tor networks that use only one
|
|
|
|
|
directory authority.
|
|
|
|
|
- Fix an assert from a race condition that occurs on Tor servers
|
|
|
|
|
while exiting, where various threads are trying to log that they're
|
|
|
|
|
exiting, and delete the logs, at the same time.
|
|
|
|
|
- Make our unit tests pass again on certain obscure platforms.
|
|
|
|
|
|
|
|
|
|
o Other fixes:
|
|
|
|
|
- Add support for building SUSE RPM packages.
|
|
|
|
|
- Speed up initial bootstrapping for clients: if we are making our
|
|
|
|
|
first ever connection to any entry guard, then don't mark it down
|
|
|
|
|
right after that.
|
|
|
|
|
- When only one Tor server in the network is labelled as a guard,
|
|
|
|
|
and we've already picked him, we would cycle endlessly picking him
|
|
|
|
|
again, being unhappy about it, etc. Now we specifically exclude
|
|
|
|
|
current guards when picking a new guard.
|
|
|
|
|
- Servers send create cells more reliably after the TLS connection
|
|
|
|
|
is established: we were sometimes forgetting to send half of them
|
|
|
|
|
when we had more than one pending.
|
|
|
|
|
- If we get a create cell that asks us to extend somewhere, but the
|
|
|
|
|
Tor server there doesn't match the expected digest, we now send
|
|
|
|
|
a destroy cell back, rather than silently doing nothing.
|
|
|
|
|
- Make options->RedirectExit work again.
|
|
|
|
|
- Make cookie authentication for the controller work again.
|
|
|
|
|
- Stop being picky about unusual characters in the arguments to
|
|
|
|
|
mapaddress. It's none of our business.
|
|
|
|
|
- Add a new config option "TestVia" that lets you specify preferred
|
|
|
|
|
middle hops to use for test circuits. Perhaps this will let me
|
|
|
|
|
debug the reachability problems better.
|
|
|
|
|
|
|
|
|
|
o Log / documentation fixes:
|
|
|
|
|
- If we're a server and some peer has a broken TLS certificate, don't
|
|
|
|
|
log about it unless ProtocolWarnings is set, i.e., we want to hear
|
|
|
|
|
about protocol violations by others.
|
|
|
|
|
- Fix spelling of VirtualAddrNetwork in man page.
|
|
|
|
|
- Add a better explanation at the top of the autogenerated torrc file
|
|
|
|
|
about what happened to our old torrc.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.1.20 - 2006-05-23
|
|
|
|
|
o Crash and assert fixes from 0.1.0.17:
|
|
|
|
|
- Fix assert bug in close_logs() on exit: when we close and delete
|
|
|
|
|
logs, remove them all from the global "logfiles" list.
|
|
|
|
|
- Fix an assert error when we're out of space in the connection_list
|
|
|
|
|
and we try to post a hidden service descriptor (reported by Peter
|
|
|
|
|
Palfrader).
|
|
|
|
|
- Fix a rare assert error when we've tried all intro points for
|
|
|
|
|
a hidden service and we try fetching the service descriptor again:
|
|
|
|
|
"Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed".
|
|
|
|
|
- Setconf SocksListenAddress kills Tor if it fails to bind. Now back
|
|
|
|
|
out and refuse the setconf if it would fail.
|
|
|
|
|
- If you specify a relative torrc path and you set RunAsDaemon in
|
|
|
|
|
your torrc, then it chdir()'s to the new directory. If you then
|
|
|
|
|
HUP, it tries to load the new torrc location, fails, and exits.
|
|
|
|
|
The fix: no longer allow a relative path to torrc when using -f.
|
|
|
|
|
- Check for integer overflows in more places, when adding elements
|
|
|
|
|
to smartlists. This could possibly prevent a buffer overflow
|
|
|
|
|
on malicious huge inputs.
|
|
|
|
|
|
|
|
|
|
o Security fixes, major:
|
|
|
|
|
- When we're printing strings from the network, don't try to print
|
|
|
|
|
non-printable characters. Now we're safer against shell escape
|
|
|
|
|
sequence exploits, and also against attacks to fool users into
|
|
|
|
|
misreading their logs.
|
|
|
|
|
- Implement entry guards: automatically choose a handful of entry
|
|
|
|
|
nodes and stick with them for all circuits. Only pick new guards
|
|
|
|
|
when the ones you have are unsuitable, and if the old guards
|
|
|
|
|
become suitable again, switch back. This will increase security
|
|
|
|
|
dramatically against certain end-point attacks. The EntryNodes
|
|
|
|
|
config option now provides some hints about which entry guards you
|
|
|
|
|
want to use most; and StrictEntryNodes means to only use those.
|
|
|
|
|
Fixes CVE-2006-0414.
|
|
|
|
|
- Implement exit enclaves: if we know an IP address for the
|
|
|
|
|
destination, and there's a running Tor server at that address
|
|
|
|
|
which allows exit to the destination, then extend the circuit to
|
|
|
|
|
that exit first. This provides end-to-end encryption and end-to-end
|
|
|
|
|
authentication. Also, if the user wants a .exit address or enclave,
|
|
|
|
|
use 4 hops rather than 3, and cannibalize a general circ for it
|
|
|
|
|
if you can.
|
|
|
|
|
- Obey our firewall options more faithfully:
|
|
|
|
|
. If we can't get to a dirserver directly, try going via Tor.
|
|
|
|
|
. Don't ever try to connect (as a client) to a place our
|
|
|
|
|
firewall options forbid.
|
|
|
|
|
. If we specify a proxy and also firewall options, obey the
|
|
|
|
|
firewall options even when we're using the proxy: some proxies
|
|
|
|
|
can only proxy to certain destinations.
|
|
|
|
|
- Make clients regenerate their keys when their IP address changes.
|
|
|
|
|
- For the OS X package's modified privoxy config file, comment
|
|
|
|
|
out the "logfile" line so we don't log everything passed
|
|
|
|
|
through privoxy.
|
|
|
|
|
- Our TLS handshakes were generating a single public/private
|
|
|
|
|
keypair for the TLS context, rather than making a new one for
|
|
|
|
|
each new connection. Oops. (But we were still rotating them
|
|
|
|
|
periodically, so it's not so bad.)
|
|
|
|
|
- When we were cannibalizing a circuit with a particular exit
|
|
|
|
|
node in mind, we weren't checking to see if that exit node was
|
|
|
|
|
already present earlier in the circuit. Now we are.
|
|
|
|
|
- Require server descriptors to list IPv4 addresses -- hostnames
|
|
|
|
|
are no longer allowed. This also fixes potential vulnerabilities
|
|
|
|
|
to servers providing hostnames as their address and then
|
|
|
|
|
preferentially resolving them so they can partition users.
|
|
|
|
|
- Our logic to decide if the OR we connected to was the right guy
|
|
|
|
|
was brittle and maybe open to a mitm for invalid routers.
|
|
|
|
|
|
|
|
|
|
o Security fixes, minor:
|
|
|
|
|
- Adjust tor-spec.txt to parameterize cell and key lengths. Now
|
|
|
|
|
Ian Goldberg can prove things about our handshake protocol more
|
|
|
|
|
easily.
|
|
|
|
|
- Make directory authorities generate a separate "guard" flag to
|
|
|
|
|
mean "would make a good entry guard". Clients now honor the
|
|
|
|
|
is_guard flag rather than looking at is_fast or is_stable.
|
|
|
|
|
- Try to list MyFamily elements by key, not by nickname, and warn
|
|
|
|
|
if we've not heard of a server.
|
|
|
|
|
- Start using RAND_bytes rather than RAND_pseudo_bytes from
|
|
|
|
|
OpenSSL. Also, reseed our entropy every hour, not just at
|
|
|
|
|
startup. And add entropy in 512-bit chunks, not 160-bit chunks.
|
|
|
|
|
- Refuse server descriptors where the fingerprint line doesn't match
|
|
|
|
|
the included identity key. Tor doesn't care, but other apps (and
|
|
|
|
|
humans) might actually be trusting the fingerprint line.
|
|
|
|
|
- We used to kill the circuit when we receive a relay command we
|
|
|
|
|
don't recognize. Now we just drop that cell.
|
|
|
|
|
- Fix a bug found by Lasse Overlier: when we were making internal
|
|
|
|
|
circuits (intended to be cannibalized later for rendezvous and
|
|
|
|
|
introduction circuits), we were picking them so that they had
|
|
|
|
|
useful exit nodes. There was no need for this, and it actually
|
|
|
|
|
aids some statistical attacks.
|
|
|
|
|
- Start treating internal circuits and exit circuits separately.
|
|
|
|
|
It's important to keep them separate because internal circuits
|
|
|
|
|
have their last hops picked like middle hops, rather than like
|
|
|
|
|
exit hops. So exiting on them will break the user's expectations.
|
|
|
|
|
- Fix a possible way to DoS dirservers.
|
|
|
|
|
- When the client asked for a rendezvous port that the hidden
|
|
|
|
|
service didn't want to provide, we were sending an IP address
|
|
|
|
|
back along with the end cell. Fortunately, it was zero. But stop
|
|
|
|
|
that anyway.
|
|
|
|
|
|
|
|
|
|
o Packaging improvements:
|
|
|
|
|
- Implement --with-libevent-dir option to ./configure. Improve
|
|
|
|
|
search techniques to find libevent, and use those for openssl too.
|
|
|
|
|
- Fix a couple of bugs in OpenSSL detection. Deal better when
|
|
|
|
|
there are multiple SSLs installed with different versions.
|
|
|
|
|
- Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
|
|
|
|
|
- On non-gcc compilers (e.g. Solaris's cc), use "-g -O" instead of
|
|
|
|
|
"-Wall -g -O2".
|
|
|
|
|
- Make unit tests (and other invocations that aren't the real Tor)
|
|
|
|
|
run without launching listeners, creating subdirectories, and so on.
|
|
|
|
|
- The OS X installer was adding a symlink for tor_resolve but
|
|
|
|
|
the binary was called tor-resolve (reported by Thomas Hardly).
|
|
|
|
|
- Now we can target arch and OS in rpm builds (contributed by
|
|
|
|
|
Phobos). Also make the resulting dist-rpm filename match the
|
|
|
|
|
target arch.
|
|
|
|
|
- Apply Matt Ghali's --with-syslog-facility patch to ./configure
|
|
|
|
|
if you log to syslog and want something other than LOG_DAEMON.
|
|
|
|
|
- Fix the torify (tsocks) config file to not use Tor for localhost
|
|
|
|
|
connections.
|
|
|
|
|
- Start shipping socks-extensions.txt, tor-doc-unix.html,
|
|
|
|
|
tor-doc-server.html, and stylesheet.css in the tarball.
|
|
|
|
|
- Stop shipping tor-doc.html, INSTALL, and README in the tarball.
|
|
|
|
|
They are useless now.
|
|
|
|
|
- Add Peter Palfrader's contributed check-tor script. It lets you
|
|
|
|
|
easily check whether a given server (referenced by nickname)
|
|
|
|
|
is reachable by you.
|
|
|
|
|
- Add BSD-style contributed startup script "rc.subr" from Peter
|
|
|
|
|
Thoenen.
|
|
|
|
|
|
|
|
|
|
o Directory improvements -- new directory protocol:
|
|
|
|
|
- See tor/doc/dir-spec.txt for all the juicy details. Key points:
|
|
|
|
|
- Authorities and caches publish individual descriptors (by
|
|
|
|
|
digest, by fingerprint, by "all", and by "tell me yours").
|
|
|
|
|
- Clients don't download or use the old directory anymore. Now they
|
|
|
|
|
download network-statuses from the directory authorities, and
|
|
|
|
|
fetch individual server descriptors as needed from mirrors.
|
|
|
|
|
- Clients don't download descriptors of non-running servers.
|
|
|
|
|
- Download descriptors by digest, not by fingerprint. Caches try to
|
|
|
|
|
download all listed digests from authorities; clients try to
|
|
|
|
|
download "best" digests from caches. This avoids partitioning
|
|
|
|
|
and isolating attacks better.
|
|
|
|
|
- Only upload a new server descriptor when options change, 18
|
|
|
|
|
hours have passed, uptime is reset, or bandwidth changes a lot.
|
|
|
|
|
- Directory authorities silently throw away new descriptors that
|
|
|
|
|
haven't changed much if the timestamps are similar. We do this to
|
|
|
|
|
tolerate older Tor servers that upload a new descriptor every 15
|
|
|
|
|
minutes. (It seemed like a good idea at the time.)
|
|
|
|
|
- Clients choose directory servers from the network status lists,
|
|
|
|
|
not from their internal list of router descriptors. Now they can
|
|
|
|
|
go to caches directly rather than needing to go to authorities
|
|
|
|
|
to bootstrap the first set of descriptors.
|
|
|
|
|
- When picking a random directory, prefer non-authorities if any
|
|
|
|
|
are known.
|
|
|
|
|
- Add a new flag to network-status indicating whether the server
|
|
|
|
|
can answer v2 directory requests too.
|
|
|
|
|
- Directory mirrors now cache up to 16 unrecognized network-status
|
|
|
|
|
docs, so new directory authorities will be cached too.
|
|
|
|
|
- Stop parsing, storing, or using running-routers output (but
|
|
|
|
|
mirrors still cache and serve it).
|
|
|
|
|
- Clients consider a threshold of "versioning" directory authorities
|
|
|
|
|
before deciding whether to warn the user that he's obsolete.
|
|
|
|
|
- Authorities publish separate sorted lists of recommended versions
|
|
|
|
|
for clients and for servers.
|
|
|
|
|
- Change DirServers config line to note which dirs are v1 authorities.
|
|
|
|
|
- Put nicknames on the DirServer line, so we can refer to them
|
|
|
|
|
without requiring all our users to memorize their IP addresses.
|
|
|
|
|
- Remove option when getting directory cache to see whether they
|
|
|
|
|
support running-routers; they all do now. Replace it with one
|
|
|
|
|
to see whether caches support v2 stuff.
|
|
|
|
|
- Stop listing down or invalid nodes in the v1 directory. This
|
|
|
|
|
reduces its bulk by about 1/3, and reduces load on mirrors.
|
|
|
|
|
- Mirrors no longer cache the v1 directory as often.
|
|
|
|
|
- If we as a directory mirror don't know of any v1 directory
|
|
|
|
|
authorities, then don't try to cache any v1 directories.
|
|
|
|
|
|
|
|
|
|
o Other directory improvements:
|
|
|
|
|
- Add lefkada.eecs.harvard.edu and tor.dizum.com as fourth and
|
|
|
|
|
fifth authoritative directory servers.
|
|
|
|
|
- Directory authorities no longer require an open connection from
|
|
|
|
|
a server to consider him "reachable". We need this change because
|
|
|
|
|
when we add new directory authorities, old servers won't know not
|
|
|
|
|
to hang up on them.
|
|
|
|
|
- Dir authorities now do their own external reachability testing
|
|
|
|
|
of each server, and only list as running the ones they found to
|
|
|
|
|
be reachable. We also send back warnings to the server's logs if
|
|
|
|
|
it uploads a descriptor that we already believe is unreachable.
|
|
|
|
|
- Spread the directory authorities' reachability testing over the
|
|
|
|
|
entire testing interval, so we don't try to do 500 TLS's at once
|
|
|
|
|
every 20 minutes.
|
|
|
|
|
- Make the "stable" router flag in network-status be the median of
|
|
|
|
|
the uptimes of running valid servers, and make clients pay
|
|
|
|
|
attention to the network-status flags. Thus the cutoff adapts
|
|
|
|
|
to the stability of the network as a whole, making IRC, IM, etc
|
|
|
|
|
connections more reliable.
|
|
|
|
|
- Make the v2 dir's "Fast" flag based on relative capacity, just
|
|
|
|
|
like "Stable" is based on median uptime. Name everything in the
|
|
|
|
|
top 7/8 Fast, and only the top 1/2 gets to be a Guard.
|
|
|
|
|
- Retry directory requests if we fail to get an answer we like
|
|
|
|
|
from a given dirserver (we were retrying before, but only if
|
|
|
|
|
we fail to connect).
|
|
|
|
|
- Return a robots.txt on our dirport to discourage google indexing.
|
|
|
|
|
|
|
|
|
|
o Controller protocol improvements:
|
|
|
|
|
- Revised controller protocol (version 1) that uses ascii rather
|
|
|
|
|
than binary: tor/doc/control-spec.txt. Add supporting libraries
|
|
|
|
|
in python and java and c# so you can use the controller from your
|
|
|
|
|
applications without caring how our protocol works.
|
|
|
|
|
- Allow the DEBUG controller event to work again. Mark certain log
|
|
|
|
|
entries as "don't tell this to controllers", so we avoid cycles.
|
|
|
|
|
- New controller function "getinfo accounting", to ask how
|
|
|
|
|
many bytes we've used in this time period.
|
|
|
|
|
- Add a "resetconf" command so you can set config options like
|
|
|
|
|
AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
|
|
|
|
|
a config option in the torrc with no value, then it clears it
|
|
|
|
|
entirely (rather than setting it to its default).
|
|
|
|
|
- Add a "getinfo config-file" to tell us where torrc is. Also
|
|
|
|
|
expose guard nodes, config options/names.
|
|
|
|
|
- Add a "quit" command (when when using the controller manually).
|
|
|
|
|
- Add a new signal "newnym" to "change pseudonyms" -- that is, to
|
|
|
|
|
stop using any currently-dirty circuits for new streams, so we
|
|
|
|
|
don't link new actions to old actions. This also occurs on HUP
|
|
|
|
|
or "signal reload".
|
|
|
|
|
- If we would close a stream early (e.g. it asks for a .exit that
|
|
|
|
|
we know would refuse it) but the LeaveStreamsUnattached config
|
|
|
|
|
option is set by the controller, then don't close it.
|
|
|
|
|
- Add a new controller event type "authdir_newdescs" that allows
|
|
|
|
|
controllers to get all server descriptors that were uploaded to
|
|
|
|
|
a router in its role as directory authority.
|
|
|
|
|
- New controller option "getinfo desc/all-recent" to fetch the
|
|
|
|
|
latest server descriptor for every router that Tor knows about.
|
|
|
|
|
- Fix the controller's "attachstream 0" command to treat conn like
|
|
|
|
|
it just connected, doing address remapping, handling .exit and
|
|
|
|
|
.onion idioms, and so on. Now we're more uniform in making sure
|
|
|
|
|
that the controller hears about new and closing connections.
|
|
|
|
|
- Permit transitioning from ORPort==0 to ORPort!=0, and back, from
|
|
|
|
|
the controller. Also, rotate dns and cpu workers if the controller
|
|
|
|
|
changes options that will affect them; and initialize the dns
|
|
|
|
|
worker cache tree whether or not we start out as a server.
|
|
|
|
|
- Add a new circuit purpose 'controller' to let the controller ask
|
|
|
|
|
for a circuit that Tor won't try to use. Extend the "extendcircuit"
|
|
|
|
|
controller command to let you specify the purpose if you're starting
|
|
|
|
|
a new circuit. Add a new "setcircuitpurpose" controller command to
|
|
|
|
|
let you change a circuit's purpose after it's been created.
|
|
|
|
|
- Let the controller ask for "getinfo dir/server/foo" so it can ask
|
|
|
|
|
directly rather than connecting to the dir port. "getinfo
|
|
|
|
|
dir/status/foo" also works, but currently only if your DirPort
|
|
|
|
|
is enabled.
|
|
|
|
|
- Let the controller tell us about certain router descriptors
|
|
|
|
|
that it doesn't want Tor to use in circuits. Implement
|
|
|
|
|
"setrouterpurpose" and modify "+postdescriptor" to do this.
|
|
|
|
|
- If the controller's *setconf commands fail, collect an error
|
|
|
|
|
message in a string and hand it back to the controller -- don't
|
|
|
|
|
just tell them to go read their logs.
|
|
|
|
|
|
|
|
|
|
o Scalability, resource management, and performance:
|
|
|
|
|
- Fix a major load balance bug: we were round-robin reading in 16 KB
|
|
|
|
|
chunks, and servers with bandwidthrate of 20 KB, while downloading
|
|
|
|
|
a 600 KB directory, would starve their other connections. Now we
|
|
|
|
|
try to be a bit more fair.
|
|
|
|
|
- Be more conservative about whether to advertise our DirPort.
|
|
|
|
|
The main change is to not advertise if we're running at capacity
|
|
|
|
|
and either a) we could hibernate ever or b) our capacity is low
|
|
|
|
|
and we're using a default DirPort.
|
|
|
|
|
- We weren't cannibalizing circuits correctly for
|
|
|
|
|
CIRCUIT_PURPOSE_C_ESTABLISH_REND and
|
|
|
|
|
CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
|
|
|
|
|
build those from scratch. This should make hidden services faster.
|
|
|
|
|
- Predict required circuits better, with an eye toward making hidden
|
|
|
|
|
services faster on the service end.
|
|
|
|
|
- Compress exit policies even more: look for duplicate lines and
|
|
|
|
|
remove them.
|
|
|
|
|
- Generate 18.0.0.0/8 address policy format in descs when we can;
|
|
|
|
|
warn when the mask is not reducible to a bit-prefix.
|
|
|
|
|
- There used to be two ways to specify your listening ports in a
|
|
|
|
|
server descriptor: on the "router" line and with a separate "ports"
|
|
|
|
|
line. Remove support for the "ports" line.
|
|
|
|
|
- Reduce memory requirements in our structs by changing the order
|
|
|
|
|
of fields. Replace balanced trees with hash tables. Inline
|
|
|
|
|
bottleneck smartlist functions. Add a "Map from digest to void*"
|
|
|
|
|
abstraction so we can do less hex encoding/decoding, and use it
|
|
|
|
|
in router_get_by_digest(). Many other CPU and memory improvements.
|
|
|
|
|
- Allow tor_gzip_uncompress to extract as much as possible from
|
|
|
|
|
truncated compressed data. Try to extract as many
|
|
|
|
|
descriptors as possible from truncated http responses (when
|
|
|
|
|
purpose is DIR_PURPOSE_FETCH_ROUTERDESC).
|
|
|
|
|
- Make circ->onionskin a pointer, not a static array. moria2 was using
|
|
|
|
|
125000 circuit_t's after it had been up for a few weeks, which
|
|
|
|
|
translates to 20+ megs of wasted space.
|
|
|
|
|
- The private half of our EDH handshake keys are now chosen out
|
|
|
|
|
of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
|
|
|
|
|
- Stop doing the complex voodoo overkill checking for insecure
|
|
|
|
|
Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
|
|
|
|
|
- Do round-robin writes for TLS of at most 16 kB per write. This
|
|
|
|
|
might be more fair on loaded Tor servers.
|
|
|
|
|
- Do not use unaligned memory access on alpha, mips, or mipsel.
|
|
|
|
|
It *works*, but is very slow, so we treat them as if it doesn't.
|
|
|
|
|
|
|
|
|
|
o Other bugfixes and improvements:
|
|
|
|
|
- Start storing useful information to $DATADIR/state, so we can
|
|
|
|
|
remember things across invocations of Tor. Retain unrecognized
|
|
|
|
|
lines so we can be forward-compatible, and write a TorVersion line
|
|
|
|
|
so we can be backward-compatible.
|
|
|
|
|
- If ORPort is set, Address is not explicitly set, and our hostname
|
|
|
|
|
resolves to a private IP address, try to use an interface address
|
|
|
|
|
if it has a public address. Now Windows machines that think of
|
|
|
|
|
themselves as localhost can guess their address.
|
|
|
|
|
- Regenerate our local descriptor if it's dirty and we try to use
|
|
|
|
|
it locally (e.g. if it changes during reachability detection).
|
|
|
|
|
This was causing some Tor servers to keep publishing the same
|
|
|
|
|
initial descriptor forever.
|
|
|
|
|
- Tor servers with dynamic IP addresses were needing to wait 18
|
|
|
|
|
hours before they could start doing reachability testing using
|
|
|
|
|
the new IP address and ports. This is because they were using
|
|
|
|
|
the internal descriptor to learn what to test, yet they were only
|
|
|
|
|
rebuilding the descriptor once they decided they were reachable.
|
|
|
|
|
- It turns out we couldn't bootstrap a network since we added
|
|
|
|
|
reachability detection in 0.1.0.1-rc. Good thing the Tor network
|
|
|
|
|
has never gone down. Add an AssumeReachable config option to let
|
|
|
|
|
servers and authorities bootstrap. When we're trying to build a
|
|
|
|
|
high-uptime or high-bandwidth circuit but there aren't enough
|
|
|
|
|
suitable servers, try being less picky rather than simply failing.
|
|
|
|
|
- Newly bootstrapped Tor networks couldn't establish hidden service
|
|
|
|
|
circuits until they had nodes with high uptime. Be more tolerant.
|
|
|
|
|
- Really busy servers were keeping enough circuits open on stable
|
|
|
|
|
connections that they were wrapping around the circuit_id
|
|
|
|
|
space. (It's only two bytes.) This exposed a bug where we would
|
|
|
|
|
feel free to reuse a circuit_id even if it still exists but has
|
|
|
|
|
been marked for close. Try to fix this bug. Some bug remains.
|
|
|
|
|
- When we fail to bind or listen on an incoming or outgoing
|
|
|
|
|
socket, we now close it before refusing, rather than just
|
|
|
|
|
leaking it. (Thanks to Peter Palfrader for finding.)
|
|
|
|
|
- Fix a file descriptor leak in start_daemon().
|
|
|
|
|
- On Windows, you can't always reopen a port right after you've
|
|
|
|
|
closed it. So change retry_listeners() to only close and re-open
|
|
|
|
|
ports that have changed.
|
|
|
|
|
- Workaround a problem with some http proxies that refuse GET
|
|
|
|
|
requests that specify "Content-Length: 0". Reported by Adrian.
|
|
|
|
|
- Recover better from TCP connections to Tor servers that are
|
|
|
|
|
broken but don't tell you (it happens!); and rotate TLS
|
|
|
|
|
connections once a week.
|
|
|
|
|
- Fix a scary-looking but apparently harmless bug where circuits
|
|
|
|
|
would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
|
|
|
|
|
servers, and never switch to state CIRCUIT_STATE_OPEN.
|
|
|
|
|
- Check for even more Windows version flags when writing the platform
|
|
|
|
|
string in server descriptors, and note any we don't recognize.
|
|
|
|
|
- Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
|
|
|
|
|
get a better idea of why their circuits failed. Not used yet.
|
|
|
|
|
- Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
|
|
|
|
|
We don't use them yet, but maybe one day our DNS resolver will be
|
|
|
|
|
able to discover them.
|
|
|
|
|
- Let people type "tor --install" as well as "tor -install" when they
|
|
|
|
|
want to make it an NT service.
|
|
|
|
|
- Looks like we were never delivering deflated (i.e. compressed)
|
|
|
|
|
running-routers lists, even when asked. Oops.
|
|
|
|
|
- We were leaking some memory every time the client changed IPs.
|
|
|
|
|
- Clean up more of the OpenSSL memory when exiting, so we can detect
|
|
|
|
|
memory leaks better.
|
|
|
|
|
- Never call free() on tor_malloc()d memory. This will help us
|
|
|
|
|
use dmalloc to detect memory leaks.
|
|
|
|
|
- Some Tor servers process billions of cells per day. These
|
|
|
|
|
statistics are now uint64_t's.
|
|
|
|
|
- Check [X-]Forwarded-For headers in HTTP requests when generating
|
|
|
|
|
log messages. This lets people run dirservers (and caches) behind
|
|
|
|
|
Apache but still know which IP addresses are causing warnings.
|
|
|
|
|
- Fix minor integer overflow in calculating when we expect to use up
|
|
|
|
|
our bandwidth allocation before hibernating.
|
|
|
|
|
- Lower the minimum required number of file descriptors to 1000,
|
|
|
|
|
so we can have some overhead for Valgrind on Linux, where the
|
|
|
|
|
default ulimit -n is 1024.
|
|
|
|
|
- Stop writing the "router.desc" file, ever. Nothing uses it anymore,
|
|
|
|
|
and its existence is confusing some users.
|
|
|
|
|
|
|
|
|
|
o Config option fixes:
|
|
|
|
|
- Add a new config option ExitPolicyRejectPrivate which defaults
|
|
|
|
|
to on. Now all exit policies will begin with rejecting private
|
|
|
|
|
addresses, unless the server operator explicitly turns it off.
|
|
|
|
|
- Bump the default bandwidthrate to 3 MB, and burst to 6 MB.
|
|
|
|
|
- Add new ReachableORAddresses and ReachableDirAddresses options
|
|
|
|
|
that understand address policies. FascistFirewall is now a synonym
|
|
|
|
|
for "ReachableORAddresses *:443", "ReachableDirAddresses *:80".
|
|
|
|
|
- Start calling it FooListenAddress rather than FooBindAddress,
|
|
|
|
|
since few of our users know what it means to bind an address
|
|
|
|
|
or port.
|
|
|
|
|
- If the user gave Tor an odd number of command-line arguments,
|
|
|
|
|
we were silently ignoring the last one. Now we complain and fail.
|
|
|
|
|
This wins the oldest-bug prize -- this bug has been present since
|
|
|
|
|
November 2002, as released in Tor 0.0.0.
|
|
|
|
|
- If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
|
|
|
|
|
torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
|
|
|
|
|
it would silently ignore the 6668.
|
|
|
|
|
- If we get a linelist or linelist_s config option from the torrc,
|
|
|
|
|
e.g. ExitPolicy, and it has no value, warn and skip rather than
|
|
|
|
|
silently resetting it to its default.
|
|
|
|
|
- Setconf was appending items to linelists, not clearing them.
|
|
|
|
|
- Add MyFamily to torrc.sample in the server section, so operators
|
|
|
|
|
will be more likely to learn that it exists.
|
|
|
|
|
- Make ContactInfo mandatory for authoritative directory servers.
|
|
|
|
|
- MaxConn has been obsolete for a while now. Document the ConnLimit
|
|
|
|
|
config option, which is a *minimum* number of file descriptors
|
|
|
|
|
that must be available else Tor refuses to start.
|
|
|
|
|
- Get rid of IgnoreVersion undocumented config option, and make us
|
|
|
|
|
only warn, never exit, when we're running an obsolete version.
|
|
|
|
|
- Make MonthlyAccountingStart config option truly obsolete now.
|
|
|
|
|
- Correct the man page entry on TrackHostExitsExpire.
|
|
|
|
|
- Let directory authorities start even if they don't specify an
|
|
|
|
|
Address config option.
|
|
|
|
|
- Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
|
|
|
|
|
reflect the updated flags in our v2 dir protocol.
|
|
|
|
|
|
|
|
|
|
o Config option features:
|
|
|
|
|
- Add a new config option FastFirstHopPK (on by default) so clients
|
|
|
|
|
do a trivial crypto handshake for their first hop, since TLS has
|
|
|
|
|
already taken care of confidentiality and authentication.
|
|
|
|
|
- Let the user set ControlListenAddress in the torrc. This can be
|
|
|
|
|
dangerous, but there are some cases (like a secured LAN) where it
|
|
|
|
|
makes sense.
|
|
|
|
|
- New config options to help controllers: FetchServerDescriptors
|
|
|
|
|
and FetchHidServDescriptors for whether to fetch server
|
|
|
|
|
info and hidserv info or let the controller do it, and
|
|
|
|
|
PublishServerDescriptor and PublishHidServDescriptors.
|
|
|
|
|
- Also let the controller set the __AllDirActionsPrivate config
|
|
|
|
|
option if you want all directory fetches/publishes to happen via
|
|
|
|
|
Tor (it assumes your controller bootstraps your circuits).
|
|
|
|
|
- Add "HardwareAccel" config option: support for crypto hardware
|
|
|
|
|
accelerators via OpenSSL. Off by default, until we find somebody
|
|
|
|
|
smart who can test it for us. (It appears to produce seg faults
|
|
|
|
|
in at least some cases.)
|
|
|
|
|
- New config option "AuthDirRejectUnlisted" for directory authorities
|
|
|
|
|
as a panic button: if we get flooded with unusable servers we can
|
|
|
|
|
revert to only listing servers in the approved-routers file.
|
|
|
|
|
- Directory authorities can now reject/invalidate by key and IP,
|
|
|
|
|
with the config options "AuthDirInvalid" and "AuthDirReject", or
|
|
|
|
|
by marking a fingerprint as "!reject" or "!invalid" (as its
|
|
|
|
|
nickname) in the approved-routers file. This is useful since
|
|
|
|
|
currently we automatically list servers as running and usable
|
|
|
|
|
even if we know they're jerks.
|
|
|
|
|
- Add a new config option TestSocks so people can see whether their
|
|
|
|
|
applications are using socks4, socks4a, socks5-with-ip, or
|
|
|
|
|
socks5-with-fqdn. This way they don't have to keep mucking
|
|
|
|
|
with tcpdump and wondering if something got cached somewhere.
|
|
|
|
|
- Add "private:*" as an alias in configuration for policies. Now
|
|
|
|
|
you can simplify your exit policy rather than needing to list
|
|
|
|
|
every single internal or nonroutable network space.
|
|
|
|
|
- Accept "private:*" in routerdesc exit policies; not generated yet
|
|
|
|
|
because older Tors do not understand it.
|
|
|
|
|
- Add configuration option "V1AuthoritativeDirectory 1" which
|
|
|
|
|
moria1, moria2, and tor26 have set.
|
|
|
|
|
- Implement an option, VirtualAddrMask, to set which addresses
|
|
|
|
|
get handed out in response to mapaddress requests. This works
|
|
|
|
|
around a bug in tsocks where 127.0.0.0/8 is never socksified.
|
|
|
|
|
- Add a new config option FetchUselessDescriptors, off by default,
|
|
|
|
|
for when you plan to run "exitlist" on your client and you want
|
|
|
|
|
to know about even the non-running descriptors.
|
|
|
|
|
- SocksTimeout: How long do we let a socks connection wait
|
|
|
|
|
unattached before we fail it?
|
|
|
|
|
- CircuitBuildTimeout: Cull non-open circuits that were born
|
|
|
|
|
at least this many seconds ago.
|
|
|
|
|
- CircuitIdleTimeout: Cull open clean circuits that were born
|
|
|
|
|
at least this many seconds ago.
|
|
|
|
|
- New config option SafeSocks to reject all application connections
|
|
|
|
|
using unsafe socks protocols. Defaults to off.
|
|
|
|
|
|
|
|
|
|
o Improved and clearer log messages:
|
|
|
|
|
- Reduce clutter in server logs. We're going to try to make
|
|
|
|
|
them actually usable now. New config option ProtocolWarnings that
|
|
|
|
|
lets you hear about how _other Tors_ are breaking the protocol. Off
|
|
|
|
|
by default.
|
|
|
|
|
- Divide log messages into logging domains. Once we put some sort
|
|
|
|
|
of interface on this, it will let people looking at more verbose
|
|
|
|
|
log levels specify the topics they want to hear more about.
|
|
|
|
|
- Log server fingerprint on startup, so new server operators don't
|
|
|
|
|
have to go hunting around their filesystem for it.
|
|
|
|
|
- Provide dire warnings to any users who set DirServer manually;
|
|
|
|
|
move it out of torrc.sample and into torrc.complete.
|
|
|
|
|
- Make the log message less scary when all the dirservers are
|
|
|
|
|
temporarily unreachable.
|
|
|
|
|
- When tor_socketpair() fails in Windows, give a reasonable
|
|
|
|
|
Windows-style errno back.
|
|
|
|
|
- Improve tor_gettimeofday() granularity on windows.
|
|
|
|
|
- We were printing the number of idle dns workers incorrectly when
|
|
|
|
|
culling them.
|
|
|
|
|
- Handle duplicate lines in approved-routers files without warning.
|
|
|
|
|
- We were whining about using socks4 or socks5-with-local-lookup
|
|
|
|
|
even when it's an IP address in the "virtual" range we designed
|
|
|
|
|
exactly for this case.
|
|
|
|
|
- Check for named servers when looking them up by nickname;
|
|
|
|
|
warn when we're calling a non-named server by its nickname;
|
|
|
|
|
don't warn twice about the same name.
|
|
|
|
|
- Downgrade the dirserver log messages when whining about
|
|
|
|
|
unreachability.
|
|
|
|
|
- Correct "your server is reachable" log entries to indicate that
|
|
|
|
|
it was self-testing that told us so.
|
|
|
|
|
- If we're trying to be a Tor server and running Windows 95/98/ME
|
|
|
|
|
as a server, explain that we'll likely crash.
|
|
|
|
|
- Provide a more useful warn message when our onion queue gets full:
|
|
|
|
|
the CPU is too slow or the exit policy is too liberal.
|
|
|
|
|
- Don't warn when we receive a 503 from a dirserver/cache -- this
|
|
|
|
|
will pave the way for them being able to refuse if they're busy.
|
|
|
|
|
- When we fail to bind a listener, try to provide a more useful
|
|
|
|
|
log message: e.g., "Is Tor already running?"
|
|
|
|
|
- Only start testing reachability once we've established a
|
|
|
|
|
circuit. This will make startup on dir authorities less noisy.
|
|
|
|
|
- Don't try to upload hidden service descriptors until we have
|
|
|
|
|
established a circuit.
|
|
|
|
|
- Tor didn't warn when it failed to open a log file.
|
|
|
|
|
- Warn when listening on a public address for socks. We suspect a
|
|
|
|
|
lot of people are setting themselves up as open socks proxies,
|
|
|
|
|
and they have no idea that jerks on the Internet are using them,
|
|
|
|
|
since they simply proxy the traffic into the Tor network.
|
|
|
|
|
- Give a useful message when people run Tor as the wrong user,
|
|
|
|
|
rather than telling them to start chowning random directories.
|
|
|
|
|
- Fix a harmless bug that was causing Tor servers to log
|
|
|
|
|
"Got an end because of misc error, but we're not an AP. Closing."
|
|
|
|
|
- Fix wrong log message when you add a "HiddenServiceNodes" config
|
|
|
|
|
line without any HiddenServiceDir line (reported by Chris Thomas).
|
|
|
|
|
- Directory authorities now stop whining so loudly about bad
|
|
|
|
|
descriptors that they fetch from other dirservers. So when there's
|
|
|
|
|
a log complaint, it's for sure from a freshly uploaded descriptor.
|
|
|
|
|
- When logging via syslog, include the pid whenever we provide
|
|
|
|
|
a log entry. Suggested by Todd Fries.
|
|
|
|
|
- When we're shutting down and we do something like try to post a
|
|
|
|
|
server descriptor or rendezvous descriptor, don't complain that
|
|
|
|
|
we seem to be unreachable. Of course we are, we're shutting down.
|
|
|
|
|
- Change log line for unreachability to explicitly suggest /etc/hosts
|
|
|
|
|
as the culprit. Also make it clearer what IP address and ports we're
|
|
|
|
|
testing for reachability.
|
|
|
|
|
- Put quotes around user-supplied strings when logging so users are
|
|
|
|
|
more likely to realize if they add bad characters (like quotes)
|
|
|
|
|
to the torrc.
|
|
|
|
|
- NT service patch from Matt Edman to improve error messages on Win32.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.17 - 2006-02-17
|
|
|
|
|
o Crash bugfixes on 0.1.0.x:
|
|
|
|
|
- When servers with a non-zero DirPort came out of hibernation,
|
|
|
|
|
sometimes they would trigger an assert.
|
|
|
|
|
|
|
|
|
|
o Other important bugfixes:
|
|
|
|
|
- On platforms that don't have getrlimit (like Windows), we were
|
|
|
|
|
artificially constraining ourselves to a max of 1024
|
|
|
|
|
connections. Now just assume that we can handle as many as 15000
|
|
|
|
|
connections. Hopefully this won't cause other problems.
|
|
|
|
|
|
|
|
|
|
o Backported features:
|
|
|
|
|
- When we're a server, a client asks for an old-style directory,
|
|
|
|
|
and our write bucket is empty, don't give it to him. This way
|
|
|
|
|
small servers can continue to serve the directory *sometimes*,
|
|
|
|
|
without getting overloaded.
|
|
|
|
|
- Whenever you get a 503 in response to a directory fetch, try
|
|
|
|
|
once more. This will become important once servers start sending
|
|
|
|
|
503's whenever they feel busy.
|
|
|
|
|
- Fetch a new directory every 120 minutes, not every 40 minutes.
|
|
|
|
|
Now that we have hundreds of thousands of users running the old
|
|
|
|
|
directory algorithm, it's starting to hurt a lot.
|
|
|
|
|
- Bump up the period for forcing a hidden service descriptor upload
|
|
|
|
|
from 20 minutes to 1 hour.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.16 - 2006-01-02
|
|
|
|
|
o Crash bugfixes on 0.1.0.x:
|
|
|
|
|
- On Windows, build with a libevent patch from "I-M Weasel" to avoid
|
|
|
|
|
corrupting the heap, losing FDs, or crashing when we need to resize
|
|
|
|
|
the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
|
|
|
|
|
- It turns out sparc64 platforms crash on unaligned memory access
|
|
|
|
|
too -- so detect and avoid this.
|
|
|
|
|
- Handle truncated compressed data correctly (by detecting it and
|
|
|
|
|
giving an error).
|
|
|
|
|
- Fix possible-but-unlikely free(NULL) in control.c.
|
|
|
|
|
- When we were closing connections, there was a rare case that
|
|
|
|
|
stomped on memory, triggering seg faults and asserts.
|
|
|
|
|
- Avoid potential infinite recursion when building a descriptor. (We
|
|
|
|
|
don't know that it ever happened, but better to fix it anyway.)
|
|
|
|
|
- We were neglecting to unlink marked circuits from soon-to-close OR
|
|
|
|
|
connections, which caused some rare scribbling on freed memory.
|
|
|
|
|
- Fix a memory stomping race bug when closing the joining point of two
|
|
|
|
|
rendezvous circuits.
|
|
|
|
|
- Fix an assert in time parsing found by Steven Murdoch.
|
|
|
|
|
|
|
|
|
|
o Other bugfixes on 0.1.0.x:
|
|
|
|
|
- When we're doing reachability testing, provide more useful log
|
|
|
|
|
messages so the operator knows what to expect.
|
|
|
|
|
- Do not check whether DirPort is reachable when we are suppressing
|
|
|
|
|
advertising it because of hibernation.
|
|
|
|
|
- When building with -static or on Solaris, we sometimes needed -ldl.
|
|
|
|
|
- One of the dirservers (tor26) changed its IP address.
|
|
|
|
|
- When we're deciding whether a stream has enough circuits around
|
|
|
|
|
that can handle it, count the freshly dirty ones and not the ones
|
|
|
|
|
that are so dirty they won't be able to handle it.
|
|
|
|
|
- When we're expiring old circuits, we had a logic error that caused
|
|
|
|
|
us to close new rendezvous circuits rather than old ones.
|
|
|
|
|
- Give a more helpful log message when you try to change ORPort via
|
|
|
|
|
the controller: you should upgrade Tor if you want that to work.
|
|
|
|
|
- We were failing to parse Tor versions that start with "Tor ".
|
|
|
|
|
- Tolerate faulty streams better: when a stream fails for reason
|
|
|
|
|
exitpolicy, stop assuming that the router is lying about his exit
|
|
|
|
|
policy. When a stream fails for reason misc, allow it to retry just
|
|
|
|
|
as if it was resolvefailed. When a stream has failed three times,
|
|
|
|
|
reset its failure count so we can try again and get all three tries.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.15 - 2005-09-23
|
|
|
|
|
o Bugfixes on 0.1.0.x:
|
|
|
|
|
- Reject ports 465 and 587 (spam targets) in default exit policy.
|
|
|
|
|
- Don't crash when we don't have any spare file descriptors and we
|
|
|
|
|
try to spawn a dns or cpu worker.
|
|
|
|
|
- Get rid of IgnoreVersion undocumented config option, and make us
|
|
|
|
|
only warn, never exit, when we're running an obsolete version.
|
|
|
|
|
- Don't try to print a null string when your server finds itself to
|
|
|
|
|
be unreachable and the Address config option is empty.
|
|
|
|
|
- Make the numbers in read-history and write-history into uint64s,
|
|
|
|
|
so they don't overflow and publish negatives in the descriptor.
|
|
|
|
|
- Fix a minor memory leak in smartlist_string_remove().
|
|
|
|
|
- We were only allowing ourselves to upload a server descriptor at
|
|
|
|
|
most every 20 minutes, even if it changed earlier than that.
|
|
|
|
|
- Clean up log entries that pointed to old URLs.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.14 - 2005-08-08
|
|
|
|
|
o Bugfixes on 0.1.0.x:
|
|
|
|
|
- Fix the other half of the bug with crypto handshakes
|
|
|
|
|
(CVE-2005-2643).
|
|
|
|
|
- Fix an assert trigger if you send a 'signal term' via the
|
|
|
|
|
controller when it's listening for 'event info' messages.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.13 - 2005-08-04
|
|
|
|
|
o Bugfixes on 0.1.0.x:
|
|
|
|
|
- Fix a critical bug in the security of our crypto handshakes.
|
|
|
|
|
- Fix a size_t underflow in smartlist_join_strings2() that made
|
|
|
|
|
it do bad things when you hand it an empty smartlist.
|
|
|
|
|
- Fix Windows installer to ship Tor license (thanks to Aphex for
|
|
|
|
|
pointing out this oversight) and put a link to the doc directory
|
|
|
|
|
in the start menu.
|
|
|
|
|
- Explicitly set no-unaligned-access for sparc: it turns out the
|
|
|
|
|
new gcc's let you compile broken code, but that doesn't make it
|
|
|
|
|
not-broken.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.12 - 2005-07-18
|
|
|
|
|
o New directory servers:
|
|
|
|
|
- tor26 has changed IP address.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.1.0.x:
|
|
|
|
|
- Fix a possible double-free in tor_gzip_uncompress().
|
|
|
|
|
- When --disable-threads is set, do not search for or link against
|
|
|
|
|
pthreads libraries.
|
|
|
|
|
- Don't trigger an assert if an authoritative directory server
|
|
|
|
|
claims its dirport is 0.
|
|
|
|
|
- Fix bug with removing Tor as an NT service: some people were
|
|
|
|
|
getting "The service did not return an error." Thanks to Matt
|
|
|
|
|
Edman for the fix.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.11 - 2005-06-30
|
|
|
|
|
o Bugfixes on 0.1.0.x:
|
|
|
|
|
- Fix major security bug: servers were disregarding their
|
|
|
|
|
exit policies if clients behaved unexpectedly.
|
|
|
|
|
- Make OS X init script check for missing argument, so we don't
|
|
|
|
|
confuse users who invoke it incorrectly.
|
|
|
|
|
- Fix a seg fault in "tor --hash-password foo".
|
|
|
|
|
- The MAPADDRESS control command was broken.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.1.0.10 - 2005-06-14
|
|
|
|
|
o Fixes on Win32:
|
|
|
|
|
- Make NT services work and start on startup on Win32 (based on
|
|
|
|
|
patch by Matt Edman). See the FAQ entry for details.
|
|
|
|
|
- Make 'platform' string in descriptor more accurate for Win32
|
|
|
|
|
servers, so it's not just "unknown platform".
|
|
|
|
|
- REUSEADDR on normal platforms means you can rebind to the port
|
|
|
|
|
right after somebody else has let it go. But REUSEADDR on Win32
|
|
|
|
|
means you can bind to the port _even when somebody else already
|
|
|
|
|
has it bound_! So, don't do that on Win32.
|
|
|
|
|
- Clean up the log messages when starting on Win32 with no config
|
|
|
|
|
file.
|
|
|
|
|
- Allow seeding the RNG on Win32 even when you're not running as
|
|
|
|
|
Administrator. If seeding the RNG on Win32 fails, quit.
|
|
|
|
|
|
|
|
|
|
o Assert / crash bugs:
|
|
|
|
|
- Refuse relay cells that claim to have a length larger than the
|
|
|
|
|
maximum allowed. This prevents a potential attack that could read
|
|
|
|
|
arbitrary memory (e.g. keys) from an exit server's process
|
|
|
|
|
(CVE-2005-2050).
|
|
|
|
|
- If unofficial Tor clients connect and send weird TLS certs, our
|
|
|
|
|
Tor server triggers an assert. Stop asserting, and start handling
|
|
|
|
|
TLS errors better in other situations too.
|
|
|
|
|
- Fix a race condition that can trigger an assert when we have a
|
|
|
|
|
pending create cell and an OR connection attempt fails.
|
|
|
|
|
|
|
|
|
|
o Resource leaks:
|
|
|
|
|
- Use pthreads for worker processes rather than forking. This was
|
|
|
|
|
forced because when we forked, we ended up wasting a lot of
|
|
|
|
|
duplicate ram over time.
|
|
|
|
|
- Also switch to foo_r versions of some library calls to allow
|
|
|
|
|
reentry and threadsafeness.
|
|
|
|
|
- Implement --disable-threads configure option. Disable threads on
|
|
|
|
|
netbsd and openbsd by default, because they have no reentrant
|
|
|
|
|
resolver functions (!), and on solaris since it has other
|
|
|
|
|
threading issues.
|
|
|
|
|
- Fix possible bug on threading platforms (e.g. win32) which was
|
|
|
|
|
leaking a file descriptor whenever a cpuworker or dnsworker died.
|
|
|
|
|
- Fix a minor memory leak when somebody establishes an introduction
|
|
|
|
|
point at your Tor server.
|
|
|
|
|
- Fix possible memory leak in tor_lookup_hostname(). (Thanks to
|
|
|
|
|
Adam Langley.)
|
|
|
|
|
- Add ./configure --with-dmalloc option, to track memory leaks.
|
|
|
|
|
- And try to free all memory on closing, so we can detect what
|
|
|
|
|
we're leaking.
|
|
|
|
|
|
|
|
|
|
o Protocol correctness:
|
|
|
|
|
- When we've connected to an OR and handshaked but didn't like
|
|
|
|
|
the result, we were closing the conn without sending destroy
|
|
|
|
|
cells back for pending circuits. Now send those destroys.
|
|
|
|
|
- Start sending 'truncated' cells back rather than destroy cells
|
|
|
|
|
if the circuit closes in front of you. This means we won't have
|
|
|
|
|
to abandon partially built circuits.
|
|
|
|
|
- Handle changed router status correctly when dirserver reloads
|
|
|
|
|
fingerprint file. We used to be dropping all unverified descriptors
|
|
|
|
|
right then. The bug was hidden because we would immediately
|
|
|
|
|
fetch a directory from another dirserver, which would include the
|
|
|
|
|
descriptors we just dropped.
|
|
|
|
|
- Revise tor-spec to add more/better stream end reasons.
|
|
|
|
|
- Revise all calls to connection_edge_end to avoid sending 'misc',
|
|
|
|
|
and to take errno into account where possible.
|
|
|
|
|
- Client now retries when streams end early for 'hibernating' or
|
|
|
|
|
'resource limit' reasons, rather than failing them.
|
|
|
|
|
- Try to be more zealous about calling connection_edge_end when
|
|
|
|
|
things go bad with edge conns in connection.c.
|
|
|
|
|
|
|
|
|
|
o Robustness improvements:
|
|
|
|
|
- Better handling for heterogeneous / unreliable nodes:
|
|
|
|
|
- Annotate circuits with whether they aim to contain high uptime
|
|
|
|
|
nodes and/or high capacity nodes. When building circuits, choose
|
|
|
|
|
appropriate nodes.
|
|
|
|
|
- This means that every single node in an intro rend circuit,
|
|
|
|
|
not just the last one, will have a minimum uptime.
|
|
|
|
|
- New config option LongLivedPorts to indicate application streams
|
|
|
|
|
that will want high uptime circuits.
|
|
|
|
|
- Servers reset uptime when a dir fetch entirely fails. This
|
|
|
|
|
hopefully reflects stability of the server's network connectivity.
|
|
|
|
|
- If somebody starts his tor server in Jan 2004 and then fixes his
|
|
|
|
|
clock, don't make his published uptime be a year.
|
|
|
|
|
- Reset published uptime when we wake up from hibernation.
|
|
|
|
|
- Introduce a notion of 'internal' circs, which are chosen without
|
|
|
|
|
regard to the exit policy of the last hop. Intro and rendezvous
|
|
|
|
|
circs must be internal circs, to avoid leaking information. Resolve
|
|
|
|
|
and connect streams can use internal circs if they want.
|
|
|
|
|
- New circuit pooling algorithm: keep track of what destination ports
|
|
|
|
|
we've used recently (start out assuming we'll want to use 80), and
|
|
|
|
|
make sure to have enough circs around to satisfy these ports. Also
|
|
|
|
|
make sure to have 2 internal circs around if we've required internal
|
|
|
|
|
circs lately (and with high uptime if we've seen that lately too).
|
|
|
|
|
- Turn addr_policy_compare from a tristate to a quadstate; this should
|
|
|
|
|
help address our "Ah, you allow 1.2.3.4:80. You are a good choice
|
|
|
|
|
for google.com" problem.
|
|
|
|
|
- When a client asks us for a dir mirror and we don't have one,
|
|
|
|
|
launch an attempt to get a fresh one.
|
|
|
|
|
- First cut at support for "create-fast" cells. Clients can use
|
|
|
|
|
these when extending to their first hop, since the TLS already
|
|
|
|
|
provides forward secrecy and authentication. Not enabled on
|
|
|
|
|
clients yet.
|
|
|
|
|
|
|
|
|
|
o Reachability testing.
|
|
|
|
|
- Your Tor server will automatically try to see if its ORPort and
|
|
|
|
|
DirPort are reachable from the outside, and it won't upload its
|
|
|
|
|
descriptor until it decides at least ORPort is reachable (when
|
|
|
|
|
DirPort is not yet found reachable, publish it as zero).
|
|
|
|
|
- When building testing circs for ORPort testing, use only
|
|
|
|
|
high-bandwidth nodes, so fewer circuits fail.
|
|
|
|
|
- Notice when our IP changes, and reset stats/uptime/reachability.
|
|
|
|
|
- Authdirservers don't do ORPort reachability detection, since
|
|
|
|
|
they're in clique mode, so it will be rare to find a server not
|
|
|
|
|
already connected to them.
|
|
|
|
|
- Authdirservers now automatically approve nodes running 0.1.0.2-rc
|
|
|
|
|
or later.
|
|
|
|
|
|
|
|
|
|
o Dirserver fixes:
|
|
|
|
|
- Now we allow two unverified servers with the same nickname
|
|
|
|
|
but different keys. But if a nickname is verified, only that
|
|
|
|
|
nickname+key are allowed.
|
|
|
|
|
- If you're an authdirserver connecting to an address:port,
|
|
|
|
|
and it's not the OR you were expecting, forget about that
|
|
|
|
|
descriptor. If he *was* the one you were expecting, then forget
|
|
|
|
|
about all other descriptors for that address:port.
|
|
|
|
|
- Allow servers to publish descriptors from 12 hours in the future.
|
|
|
|
|
Corollary: only whine about clock skew from the dirserver if
|
|
|
|
|
he's a trusted dirserver (since now even verified servers could
|
|
|
|
|
have quite wrong clocks).
|
|
|
|
|
- Require servers that use the default dirservers to have public IP
|
|
|
|
|
addresses. We have too many servers that are configured with private
|
|
|
|
|
IPs and their admins never notice the log entries complaining that
|
|
|
|
|
their descriptors are being rejected.
|
|
|
|
|
|
|
|
|
|
o Efficiency improvements:
|
|
|
|
|
- Use libevent. Now we can use faster async cores (like epoll, kpoll,
|
|
|
|
|
and /dev/poll), and hopefully work better on Windows too.
|
|
|
|
|
- Apple's OS X 10.4.0 ships with a broken kqueue API, and using
|
|
|
|
|
kqueue on 10.3.9 causes kernel panics. Don't use kqueue on OS X.
|
|
|
|
|
- Find libevent even if it's hiding in /usr/local/ and your
|
|
|
|
|
CFLAGS and LDFLAGS don't tell you to look there.
|
|
|
|
|
- Be able to link with libevent as a shared library (the default
|
|
|
|
|
after 1.0d), even if it's hiding in /usr/local/lib and even
|
|
|
|
|
if you haven't added /usr/local/lib to your /etc/ld.so.conf,
|
|
|
|
|
assuming you're running gcc. Otherwise fail and give a useful
|
|
|
|
|
error message.
|
|
|
|
|
- Switch to a new buffer management algorithm, which tries to avoid
|
|
|
|
|
reallocing and copying quite as much. In first tests it looks like
|
|
|
|
|
it uses *more* memory on average, but less cpu.
|
|
|
|
|
- Switch our internal buffers implementation to use a ring buffer,
|
|
|
|
|
to hopefully improve performance for fast servers a lot.
|
|
|
|
|
- Reenable the part of the code that tries to flush as soon as an
|
|
|
|
|
OR outbuf has a full TLS record available. Perhaps this will make
|
|
|
|
|
OR outbufs not grow as huge except in rare cases, thus saving lots
|
|
|
|
|
of CPU time plus memory.
|
|
|
|
|
- Improve performance for dirservers: stop re-parsing the whole
|
|
|
|
|
directory every time you regenerate it.
|
|
|
|
|
- Keep a big splay tree of (circid,orconn)->circuit mappings to make
|
|
|
|
|
it much faster to look up a circuit for each relay cell.
|
|
|
|
|
- Remove most calls to assert_all_pending_dns_resolves_ok(),
|
|
|
|
|
since they're eating our cpu on exit nodes.
|
|
|
|
|
- Stop wasting time doing a case insensitive comparison for every
|
|
|
|
|
dns name every time we do any lookup. Canonicalize the names to
|
|
|
|
|
lowercase when you first see them.
|
|
|
|
|
|
|
|
|
|
o Hidden services:
|
|
|
|
|
- Handle unavailable hidden services better. Handle slow or busy
|
|
|
|
|
hidden services better.
|
|
|
|
|
- Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
|
|
|
|
|
circ as necessary, if there are any completed ones lying around
|
|
|
|
|
when we try to launch one.
|
|
|
|
|
- Make hidden services try to establish a rendezvous for 30 seconds
|
|
|
|
|
after fetching the descriptor, rather than for n (where n=3)
|
|
|
|
|
attempts to build a circuit.
|
|
|
|
|
- Adjust maximum skew and age for rendezvous descriptors: let skew
|
|
|
|
|
be 48 hours rather than 90 minutes.
|
|
|
|
|
- Reject malformed .onion addresses rather then passing them on as
|
|
|
|
|
normal web requests.
|
|
|
|
|
|
|
|
|
|
o Controller:
|
|
|
|
|
- More Tor controller support. See
|
|
|
|
|
http://tor.eff.org/doc/control-spec.txt for all the new features,
|
|
|
|
|
including signals to emulate unix signals from any platform;
|
|
|
|
|
redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
|
|
|
|
|
closestream; closecircuit; etc.
|
|
|
|
|
- Encode hashed controller passwords in hex instead of base64,
|
|
|
|
|
to make it easier to write controllers.
|
|
|
|
|
- Revise control spec and implementation to allow all log messages to
|
|
|
|
|
be sent to controller with their severities intact (suggested by
|
|
|
|
|
Matt Edman). Disable debug-level logs while delivering a debug-level
|
|
|
|
|
log to the controller, to prevent loop. Update TorControl to handle
|
|
|
|
|
new log event types.
|
|
|
|
|
|
|
|
|
|
o New config options/defaults:
|
|
|
|
|
- Begin scrubbing sensitive strings from logs by default. Turn off
|
|
|
|
|
the config option SafeLogging if you need to do debugging.
|
|
|
|
|
- New exit policy: accept most low-numbered ports, rather than
|
|
|
|
|
rejecting most low-numbered ports.
|
|
|
|
|
- Put a note in the torrc about abuse potential with the default
|
|
|
|
|
exit policy.
|
|
|
|
|
- Add support for CONNECTing through https proxies, with "HttpsProxy"
|
|
|
|
|
config option.
|
|
|
|
|
- Add HttpProxyAuthenticator and HttpsProxyAuthenticator support
|
|
|
|
|
based on patch from Adam Langley (basic auth only).
|
|
|
|
|
- Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
|
|
|
|
|
the fast servers that have been joining lately. (Clients are now
|
|
|
|
|
willing to load balance over up to 2 MB of advertised bandwidth
|
|
|
|
|
capacity too.)
|
|
|
|
|
- New config option MaxAdvertisedBandwidth which lets you advertise
|
|
|
|
|
a low bandwidthrate (to not attract as many circuits) while still
|
|
|
|
|
allowing a higher bandwidthrate in reality.
|
|
|
|
|
- Require BandwidthRate to be at least 20kB/s for servers.
|
|
|
|
|
- Add a NoPublish config option, so you can be a server (e.g. for
|
|
|
|
|
testing running Tor servers in other Tor networks) without
|
|
|
|
|
publishing your descriptor to the primary dirservers.
|
|
|
|
|
- Add a new AddressMap config directive to rewrite incoming socks
|
|
|
|
|
addresses. This lets you, for example, declare an implicit
|
|
|
|
|
required exit node for certain sites.
|
|
|
|
|
- Add a new TrackHostExits config directive to trigger addressmaps
|
|
|
|
|
for certain incoming socks addresses -- for sites that break when
|
|
|
|
|
your exit keeps changing (based on patch from Mike Perry).
|
|
|
|
|
- Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
|
|
|
|
|
which describes how often we retry making new circuits if current
|
|
|
|
|
ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
|
|
|
|
|
how long we're willing to make use of an already-dirty circuit.
|
|
|
|
|
- Change compiled-in SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to
|
|
|
|
|
a config option "ShutdownWaitLength" (when using kill -INT on
|
|
|
|
|
servers).
|
|
|
|
|
- Fix an edge case in parsing config options: if they say "--"
|
|
|
|
|
on the commandline, it's not a config option (thanks weasel).
|
|
|
|
|
- New config option DirAllowPrivateAddresses for authdirservers.
|
|
|
|
|
Now by default they refuse router descriptors that have non-IP or
|
|
|
|
|
private-IP addresses.
|
|
|
|
|
- Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
|
|
|
|
|
smart" default value: low for servers and high for clients.
|
|
|
|
|
- Some people were putting "Address " in their torrc, and they had
|
|
|
|
|
a buggy resolver that resolved " " to 0.0.0.0. Oops.
|
|
|
|
|
- If DataDir is ~/.tor, and that expands to /.tor, then default to
|
|
|
|
|
LOCALSTATEDIR/tor instead.
|
|
|
|
|
- Implement --verify-config command-line option to check if your torrc
|
|
|
|
|
is valid without actually launching Tor.
|
|
|
|
|
|
|
|
|
|
o Logging improvements:
|
|
|
|
|
- When dirservers refuse a server descriptor, we now log its
|
|
|
|
|
contactinfo, platform, and the poster's IP address.
|
|
|
|
|
- Only warn once per nickname from add_nickname_list_to_smartlist()
|
|
|
|
|
per failure, so an entrynode or exitnode choice that's down won't
|
|
|
|
|
yell so much.
|
|
|
|
|
- When we're connecting to an OR and he's got a different nickname/key
|
|
|
|
|
than we were expecting, only complain loudly if we're an OP or a
|
|
|
|
|
dirserver. Complaining loudly to the OR admins just confuses them.
|
|
|
|
|
- Whine at you if you're a server and you don't set your contactinfo.
|
|
|
|
|
- Warn when exit policy implicitly allows local addresses.
|
|
|
|
|
- Give a better warning when some other server advertises an
|
|
|
|
|
ORPort that is actually an apache running ssl.
|
|
|
|
|
- If we get an incredibly skewed timestamp from a dirserver mirror
|
|
|
|
|
that isn't a verified OR, don't warn -- it's probably him that's
|
|
|
|
|
wrong.
|
|
|
|
|
- When a dirserver causes you to give a warn, mention which dirserver
|
|
|
|
|
it was.
|
|
|
|
|
- Initialize libevent later in the startup process, so the logs are
|
|
|
|
|
already established by the time we start logging libevent warns.
|
|
|
|
|
- Use correct errno on win32 if libevent fails.
|
|
|
|
|
- Check and warn about known-bad/slow libevent versions.
|
|
|
|
|
- Stop warning about sigpipes in the logs. We're going to
|
|
|
|
|
pretend that getting these occassionally is normal and fine.
|
|
|
|
|
|
|
|
|
|
o New contrib scripts:
|
|
|
|
|
- New experimental script tor/contrib/exitlist: a simple python
|
|
|
|
|
script to parse directories and find Tor nodes that exit to listed
|
|
|
|
|
addresses/ports.
|
|
|
|
|
- New experimental script tor/contrib/ExerciseServer.py (needs more
|
|
|
|
|
work) that uses the controller interface to build circuits and
|
|
|
|
|
fetch pages over them. This will help us bootstrap servers that
|
|
|
|
|
have lots of capacity but haven't noticed it yet.
|
|
|
|
|
- New experimental script tor/contrib/PathDemo.py (needs more work)
|
|
|
|
|
that uses the controller interface to let you choose whole paths
|
|
|
|
|
via addresses like
|
|
|
|
|
"<hostname>.<path,separated by dots>.<length of path>.path"
|
|
|
|
|
- New contributed script "privoxy-tor-toggle" to toggle whether
|
|
|
|
|
Privoxy uses Tor. Seems to be configured for Debian by default.
|
|
|
|
|
- Have torctl.in/tor.sh.in check for location of su binary (needed
|
|
|
|
|
on FreeBSD)
|
|
|
|
|
|
|
|
|
|
o Misc bugfixes:
|
|
|
|
|
- chdir() to your datadirectory at the *end* of the daemonize process,
|
|
|
|
|
not the beginning. This was a problem because the first time you
|
|
|
|
|
run tor, if your datadir isn't there, and you have runasdaemon set
|
|
|
|
|
to 1, it will try to chdir to it before it tries to create it. Oops.
|
|
|
|
|
- Fix several double-mark-for-close bugs, e.g. where we were finding
|
|
|
|
|
a conn for a cell even if that conn is already marked for close.
|
|
|
|
|
- Stop most cases of hanging up on a socks connection without sending
|
|
|
|
|
the socks reject.
|
|
|
|
|
- Fix a bug in the RPM package: set home directory for _tor to
|
|
|
|
|
something more reasonable when first installing.
|
|
|
|
|
- Stop putting nodename in the Platform string in server descriptors.
|
|
|
|
|
It doesn't actually help, and it is confusing/upsetting some people.
|
|
|
|
|
- When using preferred entry or exit nodes, ignore whether the
|
|
|
|
|
circuit wants uptime or capacity. They asked for the nodes, they
|
|
|
|
|
get the nodes.
|
|
|
|
|
- Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
|
|
|
|
|
artificially capped at 500kB.
|
|
|
|
|
- Cache local dns resolves correctly even when they're .exit
|
|
|
|
|
addresses.
|
|
|
|
|
- If we're hibernating and we get a SIGINT, exit immediately.
|
|
|
|
|
- tor-resolve requests were ignoring .exit if there was a working circuit
|
|
|
|
|
they could use instead.
|
|
|
|
|
- Pay more attention to the ClientOnly config option.
|
|
|
|
|
- Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in certain
|
|
|
|
|
installer screens; and don't put stuff into StartupItems unless
|
|
|
|
|
the user asks you to.
|
|
|
|
|
|
|
|
|
|
o Misc features:
|
|
|
|
|
- Rewrite address "serifos.exit" to "externalIP.serifos.exit"
|
|
|
|
|
rather than just rejecting it.
|
|
|
|
|
- If our clock jumps forward by 100 seconds or more, assume something
|
|
|
|
|
has gone wrong with our network and abandon all not-yet-used circs.
|
|
|
|
|
- When an application is using socks5, give him the whole variety of
|
|
|
|
|
potential socks5 responses (connect refused, host unreachable, etc),
|
|
|
|
|
rather than just "success" or "failure".
|
|
|
|
|
- A more sane version numbering system. See
|
|
|
|
|
http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
|
|
|
|
|
- Change version parsing logic: a version is "obsolete" if it is not
|
|
|
|
|
recommended and (1) there is a newer recommended version in the
|
|
|
|
|
same series, or (2) there are no recommended versions in the same
|
|
|
|
|
series, but there are some recommended versions in a newer series.
|
|
|
|
|
A version is "new" if it is newer than any recommended version in
|
|
|
|
|
the same series.
|
|
|
|
|
- Report HTTP reasons to client when getting a response from directory
|
|
|
|
|
servers -- so you can actually know what went wrong.
|
|
|
|
|
- Reject odd-looking addresses at the client (e.g. addresses that
|
|
|
|
|
contain a colon), rather than having the server drop them because
|
|
|
|
|
they're malformed.
|
|
|
|
|
- Stop publishing socksport in the directory, since it's not
|
|
|
|
|
actually meant to be public. For compatibility, publish a 0 there
|
|
|
|
|
for now.
|
|
|
|
|
- Since we ship our own Privoxy on OS X, tweak it so it doesn't write
|
|
|
|
|
cookies to disk and doesn't log each web request to disk. (Thanks
|
|
|
|
|
to Brett Carrington for pointing this out.)
|
|
|
|
|
- Add OSX uninstall instructions. An actual uninstall script will
|
|
|
|
|
come later.
|
|
|
|
|
- Add "opt hibernating 1" to server descriptor to make it clearer
|
|
|
|
|
whether the server is hibernating.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.10 - 2005-06-16
|
|
|
|
|
o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
|
|
|
|
|
- Refuse relay cells that claim to have a length larger than the
|
|
|
|
|
maximum allowed. This prevents a potential attack that could read
|
|
|
|
|
arbitrary memory (e.g. keys) from an exit server's process
|
|
|
|
|
(CVE-2005-2050).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.9 - 2005-04-23
|
|
|
|
|
o Bugfixes on 0.0.9.x:
|
|
|
|
|
- If unofficial Tor clients connect and send weird TLS certs, our
|
|
|
|
|
Tor server triggers an assert. This release contains a minimal
|
|
|
|
|
backport from the broader fix that we put into 0.1.0.4-rc.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.8 - 2005-04-07
|
|
|
|
|
o Bugfixes on 0.0.9.x:
|
|
|
|
|
- We have a bug that I haven't found yet. Sometimes, very rarely,
|
|
|
|
|
cpuworkers get stuck in the 'busy' state, even though the cpuworker
|
|
|
|
|
thinks of itself as idle. This meant that no new circuits ever got
|
|
|
|
|
established. Here's a workaround to kill any cpuworker that's been
|
|
|
|
|
busy for more than 100 seconds.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.7 - 2005-04-01
|
|
|
|
|
o Bugfixes on 0.0.9.x:
|
|
|
|
|
- Fix another race crash bug (thanks to Glenn Fink for reporting).
|
|
|
|
|
- Compare identity to identity, not to nickname, when extending to
|
|
|
|
|
a router not already in the directory. This was preventing us from
|
|
|
|
|
extending to unknown routers. Oops.
|
|
|
|
|
- Make sure to create OS X Tor user in <500 range, so we aren't
|
|
|
|
|
creating actual system users.
|
|
|
|
|
- Note where connection-that-hasn't-sent-end was marked, and fix
|
|
|
|
|
a few really loud instances of this harmless bug (it's fixed more
|
|
|
|
|
in 0.1.0.x).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.6 - 2005-03-24
|
|
|
|
|
o Bugfixes on 0.0.9.x (crashes and asserts):
|
|
|
|
|
- Add new end stream reasons to maintainance branch. Fix bug where
|
|
|
|
|
reason (8) could trigger an assert. Prevent bug from recurring.
|
|
|
|
|
- Apparently win32 stat wants paths to not end with a slash.
|
|
|
|
|
- Fix assert triggers in assert_cpath_layer_ok(), where we were
|
|
|
|
|
blowing away the circuit that conn->cpath_layer points to, then
|
|
|
|
|
checking to see if the circ is well-formed. Backport check to make
|
|
|
|
|
sure we dont use the cpath on a closed connection.
|
|
|
|
|
- Prevent circuit_resume_edge_reading_helper() from trying to package
|
|
|
|
|
inbufs for marked-for-close streams.
|
|
|
|
|
- Don't crash on hup if your options->address has become unresolvable.
|
|
|
|
|
- Some systems (like OS X) sometimes accept() a connection and tell
|
|
|
|
|
you the remote host is 0.0.0.0:0. If this happens, due to some
|
|
|
|
|
other mis-features, we get confused; so refuse the conn for now.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.9.x (other):
|
|
|
|
|
- Fix harmless but scary "Unrecognized content encoding" warn message.
|
|
|
|
|
- Add new stream error reason: TORPROTOCOL reason means "you are not
|
|
|
|
|
speaking a version of Tor I understand; say bye-bye to your stream."
|
|
|
|
|
- Be willing to cache directories from up to ROUTER_MAX_AGE seconds
|
|
|
|
|
into the future, now that we are more tolerant of skew. This
|
|
|
|
|
resolves a bug where a Tor server would refuse to cache a directory
|
|
|
|
|
because all the directories it gets are too far in the future;
|
|
|
|
|
yet the Tor server never logs any complaints about clock skew.
|
|
|
|
|
- Mac packaging magic: make man pages useable, and do not overwrite
|
|
|
|
|
existing torrc files.
|
|
|
|
|
- Make OS X log happily to /var/log/tor/tor.log
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.5 - 2005-02-22
|
|
|
|
|
o Bugfixes on 0.0.9.x:
|
|
|
|
|
- Fix an assert race at exit nodes when resolve requests fail.
|
|
|
|
|
- Stop picking unverified dir mirrors--it only leads to misery.
|
|
|
|
|
- Patch from Matt Edman to make NT services work better. Service
|
|
|
|
|
support is still not compiled into the executable by default.
|
|
|
|
|
- Patch from Dmitri Bely so the Tor service runs better under
|
|
|
|
|
the win32 SYSTEM account.
|
|
|
|
|
- Make tor-resolve actually work (?) on Win32.
|
|
|
|
|
- Fix a sign bug when getrlimit claims to have 4+ billion
|
|
|
|
|
file descriptors available.
|
|
|
|
|
- Stop refusing to start when bandwidthburst == bandwidthrate.
|
|
|
|
|
- When create cells have been on the onion queue more than five
|
|
|
|
|
seconds, just send back a destroy and take them off the list.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.4 - 2005-02-03
|
|
|
|
|
o Bugfixes on 0.0.9:
|
|
|
|
|
- Fix an assert bug that took down most of our servers: when
|
|
|
|
|
a server claims to have 1 GB of bandwidthburst, don't
|
|
|
|
|
freak out.
|
|
|
|
|
- Don't crash as badly if we have spawned the max allowed number
|
|
|
|
|
of dnsworkers, or we're out of file descriptors.
|
|
|
|
|
- Block more file-sharing ports in the default exit policy.
|
|
|
|
|
- MaxConn is now automatically set to the hard limit of max
|
|
|
|
|
file descriptors we're allowed (ulimit -n), minus a few for
|
|
|
|
|
logs, etc.
|
|
|
|
|
- Give a clearer message when servers need to raise their
|
|
|
|
|
ulimit -n when they start running out of file descriptors.
|
|
|
|
|
- SGI Compatibility patches from Jan Schaumann.
|
|
|
|
|
- Tolerate a corrupt cached directory better.
|
|
|
|
|
- When a dirserver hasn't approved your server, list which one.
|
|
|
|
|
- Go into soft hibernation after 95% of the bandwidth is used,
|
|
|
|
|
not 99%. This is especially important for daily hibernators who
|
|
|
|
|
have a small accounting max. Hopefully it will result in fewer
|
|
|
|
|
cut connections when the hard hibernation starts.
|
|
|
|
|
- Load-balance better when using servers that claim more than
|
|
|
|
|
800kB/s of capacity.
|
|
|
|
|
- Make NT services work (experimental, only used if compiled in).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.3 - 2005-01-21
|
|
|
|
|
o Bugfixes on 0.0.9:
|
|
|
|
|
- Backport the cpu use fixes from main branch, so busy servers won't
|
|
|
|
|
need as much processor time.
|
|
|
|
|
- Work better when we go offline and then come back, or when we
|
|
|
|
|
run Tor at boot before the network is up. We do this by
|
|
|
|
|
optimistically trying to fetch a new directory whenever an
|
|
|
|
|
application request comes in and we think we're offline -- the
|
|
|
|
|
human is hopefully a good measure of when the network is back.
|
|
|
|
|
- Backport some minimal hidserv bugfixes: keep rend circuits open as
|
|
|
|
|
long as you keep using them; actually publish hidserv descriptors
|
|
|
|
|
shortly after they change, rather than waiting 20-40 minutes.
|
|
|
|
|
- Enable Mac startup script by default.
|
|
|
|
|
- Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
|
|
|
|
|
- When you update AllowUnverifiedNodes or FirewallPorts via the
|
|
|
|
|
controller's setconf feature, we were always appending, never
|
|
|
|
|
resetting.
|
|
|
|
|
- When you update HiddenServiceDir via setconf, it was screwing up
|
|
|
|
|
the order of reading the lines, making it fail.
|
|
|
|
|
- Do not rewrite a cached directory back to the cache; otherwise we
|
|
|
|
|
will think it is recent and not fetch a newer one on startup.
|
|
|
|
|
- Workaround for webservers that lie about Content-Encoding: Tor
|
|
|
|
|
now tries to autodetect compressed directories and compression
|
|
|
|
|
itself. This lets us Proxypass dir fetches through apache.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.2 - 2005-01-04
|
|
|
|
|
o Bugfixes on 0.0.9 (crashes and asserts):
|
|
|
|
|
- Fix an assert on startup when the disk is full and you're logging
|
|
|
|
|
to a file.
|
|
|
|
|
- If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
|
|
|
|
|
style address, then we'd crash.
|
|
|
|
|
- Fix an assert trigger when the running-routers string we get from
|
|
|
|
|
a dirserver is broken.
|
|
|
|
|
- Make worker threads start and run on win32. Now win32 servers
|
|
|
|
|
may work better.
|
|
|
|
|
- Bandaid (not actually fix, but now it doesn't crash) an assert
|
|
|
|
|
where the dns worker dies mysteriously and the main Tor process
|
|
|
|
|
doesn't remember anything about the address it was resolving.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.9 (Win32):
|
|
|
|
|
- Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
|
|
|
|
|
name out of the warning/assert messages.
|
|
|
|
|
- Fix a superficial "unhandled error on read" bug on win32.
|
|
|
|
|
- The win32 installer no longer requires a click-through for our
|
|
|
|
|
license, since our Free Software license grants rights but does not
|
|
|
|
|
take any away.
|
|
|
|
|
- Win32: When connecting to a dirserver fails, try another one
|
|
|
|
|
immediately. (This was already working for non-win32 Tors.)
|
|
|
|
|
- Stop trying to parse $HOME on win32 when hunting for default
|
|
|
|
|
DataDirectory.
|
|
|
|
|
- Make tor-resolve.c work on win32 by calling network_init().
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.9 (other):
|
|
|
|
|
- Make 0.0.9.x build on Solaris again.
|
|
|
|
|
- Due to a fencepost error, we were blowing away the \n when reporting
|
|
|
|
|
confvalue items in the controller. So asking for multiple config
|
|
|
|
|
values at once couldn't work.
|
|
|
|
|
- When listing circuits that are pending on an opening OR connection,
|
|
|
|
|
if we're an OR we were listing circuits that *end* at us as
|
|
|
|
|
being pending on every listener, dns/cpu worker, etc. Stop that.
|
|
|
|
|
- Dirservers were failing to create 'running-routers' or 'directory'
|
|
|
|
|
strings if we had more than some threshold of routers. Fix them so
|
|
|
|
|
they can handle any number of routers.
|
|
|
|
|
- Fix a superficial "Duplicate mark for close" bug.
|
|
|
|
|
- Stop checking for clock skew for OR connections, even for servers.
|
|
|
|
|
- Fix a fencepost error that was chopping off the last letter of any
|
|
|
|
|
nickname that is the maximum allowed nickname length.
|
|
|
|
|
- Update URLs in log messages so they point to the new website.
|
|
|
|
|
- Fix a potential problem in mangling server private keys while
|
|
|
|
|
writing to disk (not triggered yet, as far as we know).
|
|
|
|
|
- Include the licenses for other free software we include in Tor,
|
|
|
|
|
now that we're shipping binary distributions more regularly.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9.1 - 2004-12-15
|
|
|
|
|
o Bugfixes on 0.0.9:
|
|
|
|
|
- Make hibernation actually work.
|
|
|
|
|
- Make HashedControlPassword config option work.
|
|
|
|
|
- When we're reporting event circuit status to a controller,
|
|
|
|
|
don't use the stream status code.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.9 - 2004-12-12
|
|
|
|
|
o Bugfixes on 0.0.8.1 (Crashes and asserts):
|
|
|
|
|
- Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
|
|
|
|
|
write() call will fail and we handle it there.
|
|
|
|
|
- When we run out of disk space, or other log writing error, don't
|
|
|
|
|
crash. Just stop logging to that log and continue.
|
|
|
|
|
- Fix isspace() and friends so they still make Solaris happy
|
|
|
|
|
but also so they don't trigger asserts on win32.
|
|
|
|
|
- Fix assert failure on malformed socks4a requests.
|
|
|
|
|
- Fix an assert bug where a hidden service provider would fail if
|
|
|
|
|
the first hop of his rendezvous circuit was down.
|
|
|
|
|
- Better handling of size_t vs int, so we're more robust on 64
|
|
|
|
|
bit platforms.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.8.1 (Win32):
|
|
|
|
|
- Make windows sockets actually non-blocking (oops), and handle
|
|
|
|
|
win32 socket errors better.
|
|
|
|
|
- Fix parse_iso_time on platforms without strptime (eg win32).
|
|
|
|
|
- win32: when being multithreaded, leave parent fdarray open.
|
|
|
|
|
- Better handling of winsock includes on non-MSV win32 compilers.
|
|
|
|
|
- Change our file IO stuff (especially wrt OpenSSL) so win32 is
|
|
|
|
|
happier.
|
|
|
|
|
- Make unit tests work on win32.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.8.1 (Path selection and streams):
|
|
|
|
|
- Calculate timeout for waiting for a connected cell from the time
|
|
|
|
|
we sent the begin cell, not from the time the stream started. If
|
|
|
|
|
it took a long time to establish the circuit, we would time out
|
|
|
|
|
right after sending the begin cell.
|
|
|
|
|
- Fix router_compare_addr_to_addr_policy: it was not treating a port
|
|
|
|
|
of * as always matching, so we were picking reject *:* nodes as
|
|
|
|
|
exit nodes too. Oops.
|
|
|
|
|
- When read() failed on a stream, we would close it without sending
|
|
|
|
|
back an end. So 'connection refused' would simply be ignored and
|
|
|
|
|
the user would get no response.
|
|
|
|
|
- Stop a sigpipe: when an 'end' cell races with eof from the app,
|
|
|
|
|
we shouldn't hold-open-until-flush if the eof arrived first.
|
|
|
|
|
- Let resolve conns retry/expire also, rather than sticking around
|
|
|
|
|
forever.
|
|
|
|
|
- Fix more dns related bugs: send back resolve_failed and end cells
|
|
|
|
|
more reliably when the resolve fails, rather than closing the
|
|
|
|
|
circuit and then trying to send the cell. Also attach dummy resolve
|
|
|
|
|
connections to a circuit *before* calling dns_resolve(), to fix
|
|
|
|
|
a bug where cached answers would never be sent in RESOLVED cells.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.8.1 (Circuits):
|
|
|
|
|
- Finally fix a bug that's been plaguing us for a year:
|
|
|
|
|
With high load, circuit package window was reaching 0. Whenever
|
|
|
|
|
we got a circuit-level sendme, we were reading a lot on each
|
|
|
|
|
socket, but only writing out a bit. So we would eventually reach
|
|
|
|
|
eof. This would be noticed and acted on even when there were still
|
|
|
|
|
bytes sitting in the inbuf.
|
|
|
|
|
- Use identity comparison, not nickname comparison, to choose which
|
|
|
|
|
half of circuit-ID-space each side gets to use. This is needed
|
|
|
|
|
because sometimes we think of a router as a nickname, and sometimes
|
|
|
|
|
as a hex ID, and we can't predict what the other side will do.
|
|
|
|
|
|
|
|
|
|
o Bugfixes on 0.0.8.1 (Other):
|
|
|
|
|
- Fix a whole slew of memory leaks.
|
|
|
|
|
- Disallow NDEBUG. We don't ever want anybody to turn off debug.
|
|
|
|
|
- If we are using select, make sure we stay within FD_SETSIZE.
|
|
|
|
|
- When poll() is interrupted, we shouldn't believe the revents values.
|
|
|
|
|
- Add a FAST_SMARTLIST define to optionally inline smartlist_get
|
|
|
|
|
and smartlist_len, which are two major profiling offenders.
|
|
|
|
|
- If do_hup fails, actually notice.
|
|
|
|
|
- Flush the log file descriptor after we print "Tor opening log file",
|
|
|
|
|
so we don't see those messages days later.
|
|
|
|
|
- Hidden service operators now correctly handle version 1 style
|
|
|
|
|
INTRODUCE1 cells (nobody generates them still, so not a critical
|
|
|
|
|
bug).
|
|
|
|
|
- Handle more errnos from accept() without closing the listener.
|
|
|
|
|
Some OpenBSD machines were closing their listeners because
|
|
|
|
|
they ran out of file descriptors.
|
|
|
|
|
- Some people had wrapped their tor client/server in a script
|
|
|
|
|
that would restart it whenever it died. This did not play well
|
|
|
|
|
with our "shut down if your version is obsolete" code. Now people
|
|
|
|
|
don't fetch a new directory if their local cached version is
|
|
|
|
|
recent enough.
|
|
|
|
|
- Make our autogen.sh work on ksh as well as bash.
|
|
|
|
|
- Better torrc example lines for dirbindaddress and orbindaddress.
|
|
|
|
|
- Improved bounds checking on parsed ints (e.g. config options and
|
|
|
|
|
the ones we find in directories.)
|
|
|
|
|
- Stop using separate defaults for no-config-file and
|
|
|
|
|
empty-config-file. Now you have to explicitly turn off SocksPort,
|
|
|
|
|
if you don't want it open.
|
|
|
|
|
- We were starting to daemonize before we opened our logs, so if
|
|
|
|
|
there were any problems opening logs, we would complain to stderr,
|
|
|
|
|
which wouldn't work, and then mysteriously exit.
|
|
|
|
|
- If a verified OR connects to us before he's uploaded his descriptor,
|
|
|
|
|
or we verify him and hup but he still has the original TLS
|
|
|
|
|
connection, then conn->nickname is still set like he's unverified.
|
|
|
|
|
|
|
|
|
|
o Code security improvements, inspired by Ilja:
|
|
|
|
|
- tor_snprintf wrapper over snprintf with consistent (though not C99)
|
|
|
|
|
overflow behavior.
|
|
|
|
|
- Replace sprintf with tor_snprintf. (I think they were all safe, but
|
|
|
|
|
hey.)
|
|
|
|
|
- Replace strcpy/strncpy with strlcpy in more places.
|
|
|
|
|
- Avoid strcat; use tor_snprintf or strlcat instead.
|
|
|
|
|
|
|
|
|
|
o Features (circuits and streams):
|
|
|
|
|
- New circuit building strategy: keep a list of ports that we've
|
|
|
|
|
used in the past 6 hours, and always try to have 2 circuits open
|
|
|
|
|
or on the way that will handle each such port. Seed us with port
|
|
|
|
|
80 so web users won't complain that Tor is "slow to start up".
|
|
|
|
|
- Make kill -USR1 dump more useful stats about circuits.
|
|
|
|
|
- When warning about retrying or giving up, print the address, so
|
|
|
|
|
the user knows which one it's talking about.
|
|
|
|
|
- If you haven't used a clean circuit in an hour, throw it away,
|
|
|
|
|
just to be on the safe side. (This means after 6 hours a totally
|
|
|
|
|
unused Tor client will have no circuits open.)
|
|
|
|
|
- Support "foo.nickname.exit" addresses, to let Alice request the
|
|
|
|
|
address "foo" as viewed by exit node "nickname". Based on a patch
|
|
|
|
|
from Geoff Goodell.
|
|
|
|
|
- If your requested entry or exit node has advertised bandwidth 0,
|
|
|
|
|
pick it anyway.
|
|
|
|
|
- Be more greedy about filling up relay cells -- we try reading again
|
|
|
|
|
once we've processed the stuff we read, in case enough has arrived
|
|
|
|
|
to fill the last cell completely.
|
|
|
|
|
- Refuse application socks connections to port 0.
|
|
|
|
|
- Use only 0.0.9pre1 and later servers for resolve cells.
|
|
|
|
|
|
|
|
|
|
o Features (bandwidth):
|
|
|
|
|
- Hibernation: New config option "AccountingMax" lets you
|
|
|
|
|
set how many bytes per month (in each direction) you want to
|
|
|
|
|
allow your server to consume. Rather than spreading those
|
|
|
|
|
bytes out evenly over the month, we instead hibernate for some
|
|
|
|
|
of the month and pop up at a deterministic time, work until
|
|
|
|
|
the bytes are consumed, then hibernate again. Config option
|
|
|
|
|
"MonthlyAccountingStart" lets you specify which day of the month
|
|
|
|
|
your billing cycle starts on.
|
|
|
|
|
- Implement weekly/monthly/daily accounting: now you specify your
|
|
|
|
|
hibernation properties by
|
|
|
|
|
AccountingMax N bytes|KB|MB|GB|TB
|
|
|
|
|
AccountingStart day|week|month [day] HH:MM
|
|
|
|
|
Defaults to "month 1 0:00".
|
|
|
|
|
- Let bandwidth and interval config options be specified as 5 bytes,
|
|
|
|
|
kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
|
|
|
|
|
|
|
|
|
|
o Features (directories):
|
|
|
|
|
- New "router-status" line in directory, to better bind each verified
|
|
|
|
|
nickname to its identity key.
|
|
|
|
|
- Clients can ask dirservers for /dir.z to get a compressed version
|
|
|
|
|
of the directory. Only works for servers running 0.0.9, of course.
|
|
|
|
|
- Make clients cache directories and use them to seed their router
|
|
|
|
|
lists at startup. This means clients have a datadir again.
|
|
|
|
|
- Respond to content-encoding headers by trying to uncompress as
|
|
|
|
|
appropriate.
|
|
|
|
|
- Clients and servers now fetch running-routers; cache
|
|
|
|
|
running-routers; compress running-routers; serve compressed
|
|
|
|
|
running-routers.z
|
|
|
|
|
- Make moria2 advertise a dirport of 80, so people behind firewalls
|
|
|
|
|
will be able to get a directory.
|
|
|
|
|
- Http proxy support
|
|
|
|
|
- Dirservers translate requests for http://%s:%d/x to /x
|
|
|
|
|
- You can specify "HttpProxy %s[:%d]" and all dir fetches will
|
|
|
|
|
be routed through this host.
|
|
|
|
|
- Clients ask for /tor/x rather than /x for new enough dirservers.
|
|
|
|
|
This way we can one day coexist peacefully with apache.
|
|
|
|
|
- Clients specify a "Host: %s%d" http header, to be compatible
|
|
|
|
|
with more proxies, and so running squid on an exit node can work.
|
|
|
|
|
- Protect dirservers from overzealous descriptor uploading -- wait
|
|
|
|
|
10 seconds after directory gets dirty, before regenerating.
|
|
|
|
|
|
|
|
|
|
o Features (packages and install):
|
|
|
|
|
- Add NSI installer contributed by J Doe.
|
|
|
|
|
- Apply NT service patch from Osamu Fujino. Still needs more work.
|
|
|
|
|
- Commit VC6 and VC7 workspace/project files.
|
|
|
|
|
- Commit a tor.spec for making RPM files, with help from jbash.
|
|
|
|
|
- Add contrib/torctl.in contributed by Glenn Fink.
|
|
|
|
|
- Make expand_filename handle ~ and ~username.
|
|
|
|
|
- Use autoconf to enable largefile support where necessary. Use
|
|
|
|
|
ftello where available, since ftell can fail at 2GB.
|
|
|
|
|
- Ship src/win32/ in the tarball, so people can use it to build.
|
|
|
|
|
- Make old win32 fall back to CWD if SHGetSpecialFolderLocation
|
|
|
|
|
is broken.
|
|
|
|
|
|
|
|
|
|
o Features (ui controller):
|
|
|
|
|
- Control interface: a separate program can now talk to your
|
|
|
|
|
client/server over a socket, and get/set config options, receive
|
|
|
|
|
notifications of circuits and streams starting/finishing/dying,
|
|
|
|
|
bandwidth used, etc. The next step is to get some GUIs working.
|
|
|
|
|
Let us know if you want to help out. See doc/control-spec.txt .
|
|
|
|
|
- Ship a contrib/tor-control.py as an example script to interact
|
|
|
|
|
with the control port.
|
|
|
|
|
- "tor --hash-password zzyxz" will output a salted password for
|
|
|
|
|
use in authenticating to the control interface.
|
|
|
|
|
- Implement the control-spec's SAVECONF command, to write your
|
|
|
|
|
configuration to torrc.
|
|
|
|
|
- Get cookie authentication for the controller closer to working.
|
|
|
|
|
- When set_conf changes our server descriptor, upload a new copy.
|
|
|
|
|
But don't upload it too often if there are frequent changes.
|
|
|
|
|
|
|
|
|
|
o Features (config and command-line):
|
|
|
|
|
- Deprecate unofficial config option abbreviations, and abbreviations
|
|
|
|
|
not on the command line.
|
|
|
|
|
- Configuration infrastructure support for warning on obsolete
|
|
|
|
|
options.
|
|
|
|
|
- Give a slightly more useful output for "tor -h".
|
|
|
|
|
- Break DirFetchPostPeriod into:
|
|
|
|
|
- DirFetchPeriod for fetching full directory,
|
|
|
|
|
- StatusFetchPeriod for fetching running-routers,
|
|
|
|
|
- DirPostPeriod for posting server descriptor,
|
|
|
|
|
- RendPostPeriod for posting hidden service descriptors.
|
|
|
|
|
- New log format in config:
|
|
|
|
|
"Log minsev[-maxsev] stdout|stderr|syslog" or
|
|
|
|
|
"Log minsev[-maxsev] file /var/foo"
|
|
|
|
|
- DirPolicy config option, to let people reject incoming addresses
|
|
|
|
|
from their dirserver.
|
|
|
|
|
- "tor --list-fingerprint" will list your identity key fingerprint
|
|
|
|
|
and then exit.
|
|
|
|
|
- Make tor --version --version dump the cvs Id of every file.
|
|
|
|
|
- New 'MyFamily nick1,...' config option for a server to
|
|
|
|
|
specify other servers that shouldn't be used in the same circuit
|
|
|
|
|
with it. Only believed if nick1 also specifies us.
|
|
|
|
|
- New 'NodeFamily nick1,nick2,...' config option for a client to
|
|
|
|
|
specify nodes that it doesn't want to use in the same circuit.
|
|
|
|
|
- New 'Redirectexit pattern address:port' config option for a
|
|
|
|
|
server to redirect exit connections, e.g. to a local squid.
|
|
|
|
|
- Add "pass" target for RedirectExit, to make it easier to break
|
|
|
|
|
out of a sequence of RedirectExit rules.
|
|
|
|
|
- Make the dirservers file obsolete.
|
|
|
|
|
- Include a dir-signing-key token in directories to tell the
|
|
|
|
|
parsing entity which key is being used to sign.
|
|
|
|
|
- Remove the built-in bulky default dirservers string.
|
|
|
|
|
- New config option "Dirserver %s:%d [fingerprint]", which can be
|
|
|
|
|
repeated as many times as needed. If no dirservers specified,
|
|
|
|
|
default to moria1,moria2,tor26.
|
|
|
|
|
- Make 'Routerfile' config option obsolete.
|
|
|
|
|
- Discourage people from setting their dirfetchpostperiod more often
|
|
|
|
|
than once per minute.
|
|
|
|
|
|
|
|
|
|
o Features (other):
|
|
|
|
|
- kill -USR2 now moves all logs to loglevel debug (kill -HUP to
|
|
|
|
|
get back to normal.)
|
|
|
|
|
- Accept *:706 (silc) in default exit policy.
|
|
|
|
|
- Implement new versioning format for post 0.1.
|
|
|
|
|
- Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
|
|
|
|
|
log more informatively.
|
|
|
|
|
- Check clock skew for verified servers, but allow unverified
|
|
|
|
|
servers and clients to have any clock skew.
|
|
|
|
|
- Make sure the hidden service descriptors are at a random offset
|
|
|
|
|
from each other, to hinder linkability.
|
|
|
|
|
- Clients now generate a TLS cert too, in preparation for having
|
|
|
|
|
them act more like real nodes.
|
|
|
|
|
- Add a pure-C tor-resolve implementation.
|
|
|
|
|
- Use getrlimit and friends to ensure we can reach MaxConn (currently
|
|
|
|
|
1024) file descriptors.
|
|
|
|
|
- Raise the max dns workers from 50 to 100.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.8.1 - 2004-10-13
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix a seg fault that can be triggered remotely for Tor
|
|
|
|
|
clients/servers with an open dirport.
|
|
|
|
|
- Fix a rare assert trigger, where routerinfos for entries in
|
|
|
|
|
our cpath would expire while we're building the path.
|
|
|
|
|
- Fix a bug in OutboundBindAddress so it (hopefully) works.
|
|
|
|
|
- Fix a rare seg fault for people running hidden services on
|
|
|
|
|
intermittent connections.
|
|
|
|
|
- Fix a bug in parsing opt keywords with objects.
|
|
|
|
|
- Fix a stale pointer assert bug when a stream detaches and
|
|
|
|
|
reattaches.
|
|
|
|
|
- Fix a string format vulnerability (probably not exploitable)
|
|
|
|
|
in reporting stats locally.
|
|
|
|
|
- Fix an assert trigger: sometimes launching circuits can fail
|
|
|
|
|
immediately, e.g. because too many circuits have failed recently.
|
|
|
|
|
- Fix a compile warning on 64 bit platforms.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.8 - 2004-08-25
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Made our unit tests compile again on OpenBSD 3.5, and tor
|
|
|
|
|
itself compile again on OpenBSD on a sparc64.
|
|
|
|
|
- We were neglecting milliseconds when logging on win32, so
|
|
|
|
|
everything appeared to happen at the beginning of each second.
|
|
|
|
|
- Check directory signature _before_ you decide whether you're
|
|
|
|
|
you're running an obsolete version and should exit.
|
|
|
|
|
- Check directory signature _before_ you parse the running-routers
|
|
|
|
|
list to decide who's running.
|
|
|
|
|
- Check return value of fclose while writing to disk, so we don't
|
|
|
|
|
end up with broken files when servers run out of disk space.
|
|
|
|
|
- Port it to SunOS 5.9 / Athena
|
|
|
|
|
- Fix two bugs in saving onion keys to disk when rotating, so
|
|
|
|
|
hopefully we'll get fewer people using old onion keys.
|
|
|
|
|
- Remove our mostly unused -- and broken -- hex_encode()
|
|
|
|
|
function. Use base16_encode() instead. (Thanks to Timo Lindfors
|
|
|
|
|
for pointing out this bug.)
|
|
|
|
|
- Only pick and establish intro points after we've gotten a
|
|
|
|
|
directory.
|
|
|
|
|
- Fix assert triggers: if the other side returns an address 0.0.0.0,
|
|
|
|
|
don't put it into the client dns cache.
|
|
|
|
|
- If a begin failed due to exit policy, but we believe the IP
|
|
|
|
|
address should have been allowed, switch that router to exitpolicy
|
|
|
|
|
reject *:* until we get our next directory.
|
|
|
|
|
|
|
|
|
|
o Protocol changes:
|
|
|
|
|
- 'Extend' relay cell payloads now include the digest of the
|
|
|
|
|
intended next hop's identity key. Now we can verify that we're
|
|
|
|
|
extending to the right router, and also extend to routers we
|
|
|
|
|
hadn't heard of before.
|
|
|
|
|
|
|
|
|
|
o Features:
|
|
|
|
|
- Tor nodes can now act as relays (with an advertised ORPort)
|
|
|
|
|
without being manually verified by the dirserver operators.
|
|
|
|
|
- Uploaded descriptors of unverified routers are now accepted
|
|
|
|
|
by the dirservers, and included in the directory.
|
|
|
|
|
- Verified routers are listed by nickname in the running-routers
|
|
|
|
|
list; unverified routers are listed as "$<fingerprint>".
|
|
|
|
|
- We now use hash-of-identity-key in most places rather than
|
|
|
|
|
nickname or addr:port, for improved security/flexibility.
|
|
|
|
|
- AllowUnverifiedNodes config option to let circuits choose no-name
|
|
|
|
|
routers in entry,middle,exit,introduction,rendezvous positions.
|
|
|
|
|
Allow middle and rendezvous positions by default.
|
|
|
|
|
- When picking unverified routers, skip those with low uptime and/or
|
|
|
|
|
low bandwidth, depending on what properties you care about.
|
|
|
|
|
- ClientOnly option for nodes that never want to become servers.
|
|
|
|
|
- Directory caching.
|
|
|
|
|
- "AuthoritativeDir 1" option for the official dirservers.
|
|
|
|
|
- Now other nodes (clients and servers) will cache the latest
|
|
|
|
|
directory they've pulled down.
|
|
|
|
|
- They can enable their DirPort to serve it to others.
|
|
|
|
|
- Clients will pull down a directory from any node with an open
|
|
|
|
|
DirPort, and check the signature/timestamp correctly.
|
|
|
|
|
- Authoritative dirservers now fetch directories from other
|
|
|
|
|
authdirservers, to stay better synced.
|
|
|
|
|
- Running-routers list tells who's down also, along with noting
|
|
|
|
|
if they're verified (listed by nickname) or unverified (listed
|
|
|
|
|
by hash-of-key).
|
|
|
|
|
- Allow dirservers to serve running-router list separately.
|
|
|
|
|
This isn't used yet.
|
|
|
|
|
- You can now fetch $DIRURL/running-routers to get just the
|
|
|
|
|
running-routers line, not the whole descriptor list. (But
|
|
|
|
|
clients don't use this yet.)
|
|
|
|
|
- Clients choose nodes proportional to advertised bandwidth.
|
|
|
|
|
- Clients avoid using nodes with low uptime as introduction points.
|
|
|
|
|
- Handle servers with dynamic IP addresses: don't just replace
|
|
|
|
|
options->Address with the resolved one at startup, and
|
|
|
|
|
detect our address right before we make a routerinfo each time.
|
|
|
|
|
- 'FascistFirewall' option to pick dirservers and ORs on specific
|
|
|
|
|
ports; plus 'FirewallPorts' config option to tell FascistFirewall
|
|
|
|
|
which ports are open. (Defaults to 80,443)
|
|
|
|
|
- Try other dirservers immediately if the one you try is down. This
|
|
|
|
|
should tolerate down dirservers better now.
|
|
|
|
|
- ORs connect-on-demand to other ORs
|
|
|
|
|
- If you get an extend cell to an OR you're not connected to,
|
|
|
|
|
connect, handshake, and forward the create cell.
|
|
|
|
|
- The authoritative dirservers stay connected to everybody,
|
|
|
|
|
and everybody stays connected to 0.0.7 servers, but otherwise
|
|
|
|
|
clients/servers expire unused connections after 5 minutes.
|
|
|
|
|
- When servers get a sigint, they delay 30 seconds (refusing new
|
|
|
|
|
connections) then exit. A second sigint causes immediate exit.
|
|
|
|
|
- File and name management:
|
|
|
|
|
- Look for .torrc if no CONFDIR "torrc" is found.
|
|
|
|
|
- If no datadir is defined, then choose, make, and secure ~/.tor
|
|
|
|
|
as datadir.
|
|
|
|
|
- If torrc not found, exitpolicy reject *:*.
|
|
|
|
|
- Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
|
|
|
|
|
- If no nickname is defined, derive default from hostname.
|
|
|
|
|
- Rename secret key files, e.g. identity.key -> secret_id_key,
|
|
|
|
|
to discourage people from mailing their identity key to tor-ops.
|
|
|
|
|
- Refuse to build a circuit before the directory has arrived --
|
|
|
|
|
it won't work anyway, since you won't know the right onion keys
|
|
|
|
|
to use.
|
|
|
|
|
- Parse tor version numbers so we can do an is-newer-than check
|
|
|
|
|
rather than an is-in-the-list check.
|
|
|
|
|
- New socks command 'resolve', to let us shim gethostbyname()
|
|
|
|
|
locally.
|
|
|
|
|
- A 'tor_resolve' script to access the socks resolve functionality.
|
|
|
|
|
- A new socks-extensions.txt doc file to describe our
|
|
|
|
|
interpretation and extensions to the socks protocols.
|
|
|
|
|
- Add a ContactInfo option, which gets published in descriptor.
|
|
|
|
|
- Write tor version at the top of each log file
|
|
|
|
|
- New docs in the tarball:
|
|
|
|
|
- tor-doc.html.
|
|
|
|
|
- Document that you should proxy your SSL traffic too.
|
|
|
|
|
- Log a warning if the user uses an unsafe socks variant, so people
|
|
|
|
|
are more likely to learn about privoxy or socat.
|
|
|
|
|
- Log a warning if you're running an unverified server, to let you
|
|
|
|
|
know you might want to get it verified.
|
|
|
|
|
- Change the default exit policy to reject the default edonkey,
|
|
|
|
|
kazaa, gnutella ports.
|
|
|
|
|
- Add replace_file() to util.[ch] to handle win32's rename().
|
|
|
|
|
- Publish OR uptime in descriptor (and thus in directory) too.
|
|
|
|
|
- Remember used bandwidth (both in and out), and publish 15-minute
|
|
|
|
|
snapshots for the past day into our descriptor.
|
|
|
|
|
- Be more aggressive about trying to make circuits when the network
|
|
|
|
|
has changed (e.g. when you unsuspend your laptop).
|
|
|
|
|
- Check for time skew on http headers; report date in response to
|
|
|
|
|
"GET /".
|
|
|
|
|
- If the entrynode config line has only one node, don't pick it as
|
|
|
|
|
an exitnode.
|
|
|
|
|
- Add strict{entry|exit}nodes config options. If set to 1, then
|
|
|
|
|
we refuse to build circuits that don't include the specified entry
|
|
|
|
|
or exit nodes.
|
|
|
|
|
- OutboundBindAddress config option, to bind to a specific
|
|
|
|
|
IP address for outgoing connect()s.
|
|
|
|
|
- End truncated log entries (e.g. directories) with "[truncated]".
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.7.3 - 2004-08-12
|
|
|
|
|
o Stop dnsworkers from triggering an assert failure when you
|
|
|
|
|
ask them to resolve the host "".
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.7.2 - 2004-07-07
|
|
|
|
|
o A better fix for the 0.0.0.0 problem, that will hopefully
|
|
|
|
|
eliminate the remaining related assertion failures.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.7.1 - 2004-07-04
|
|
|
|
|
o When an address resolves to 0.0.0.0, treat it as a failed resolve,
|
|
|
|
|
since internally we use 0.0.0.0 to signify "not yet resolved".
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.7 - 2004-06-07
|
|
|
|
|
o Fixes for crashes and other obnoxious bugs:
|
|
|
|
|
- Fix an epipe bug: sometimes when directory connections failed
|
|
|
|
|
to connect, we would give them a chance to flush before closing
|
|
|
|
|
them.
|
|
|
|
|
- When we detached from a circuit because of resolvefailed, we
|
|
|
|
|
would immediately try the same circuit twice more, and then
|
|
|
|
|
give up on the resolve thinking we'd tried three different
|
|
|
|
|
exit nodes.
|
|
|
|
|
- Limit the number of intro circuits we'll attempt to build for a
|
|
|
|
|
hidden service per 15-minute period.
|
|
|
|
|
- Check recommended-software string *early*, before actually parsing
|
|
|
|
|
the directory. Thus we can detect an obsolete version and exit,
|
|
|
|
|
even if the new directory format doesn't parse.
|
|
|
|
|
o Fixes for security bugs:
|
|
|
|
|
- Remember which nodes are dirservers when you startup, and if a
|
|
|
|
|
random OR enables his dirport, don't automatically assume he's
|
|
|
|
|
a trusted dirserver.
|
|
|
|
|
o Other bugfixes:
|
|
|
|
|
- Directory connections were asking the wrong poll socket to
|
|
|
|
|
start writing, and not asking themselves to start writing.
|
|
|
|
|
- When we detached from a circuit because we sent a begin but
|
|
|
|
|
didn't get a connected, we would use it again the first time;
|
|
|
|
|
but after that we would correctly switch to a different one.
|
|
|
|
|
- Stop warning when the first onion decrypt attempt fails; they
|
|
|
|
|
will sometimes legitimately fail now that we rotate keys.
|
|
|
|
|
- Override unaligned-access-ok check when $host_cpu is ia64 or
|
|
|
|
|
arm. Apparently they allow it but the kernel whines.
|
|
|
|
|
- Dirservers try to reconnect periodically too, in case connections
|
|
|
|
|
have failed.
|
|
|
|
|
- Fix some memory leaks in directory servers.
|
|
|
|
|
- Allow backslash in Win32 filenames.
|
|
|
|
|
- Made Tor build complain-free on FreeBSD, hopefully without
|
|
|
|
|
breaking other BSD builds. We'll see.
|
|
|
|
|
- Check directory signatures based on name of signer, not on whom
|
|
|
|
|
we got the directory from. This will let us cache directories more
|
|
|
|
|
easily.
|
|
|
|
|
- Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
|
|
|
|
|
settings too.
|
|
|
|
|
o Features:
|
|
|
|
|
- Doxygen markup on all functions and global variables.
|
|
|
|
|
- Make directory functions update routerlist, not replace it. So
|
|
|
|
|
now directory disagreements are not so critical a problem.
|
|
|
|
|
- Remove the upper limit on number of descriptors in a dirserver's
|
|
|
|
|
directory (not that we were anywhere close).
|
|
|
|
|
- Allow multiple logfiles at different severity ranges.
|
|
|
|
|
- Allow *BindAddress to specify ":port" rather than setting *Port
|
|
|
|
|
separately. Allow multiple instances of each BindAddress config
|
|
|
|
|
option, so you can bind to multiple interfaces if you want.
|
|
|
|
|
- Allow multiple exit policy lines, which are processed in order.
|
|
|
|
|
Now we don't need that huge line with all the commas in it.
|
|
|
|
|
- Enable accept/reject policies on SOCKS connections, so you can bind
|
|
|
|
|
to 0.0.0.0 but still control who can use your OP.
|
|
|
|
|
- Updated the man page to reflect these features.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.6.2 - 2004-05-16
|
|
|
|
|
o Our integrity-checking digest was checking only the most recent cell,
|
|
|
|
|
not the previous cells like we'd thought.
|
|
|
|
|
Thanks to Stefan Mark for finding the flaw!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.6.1 - 2004-05-06
|
|
|
|
|
o Fix two bugs in our AES counter-mode implementation (this affected
|
|
|
|
|
onion-level stream encryption, but not TLS-level). It turns
|
|
|
|
|
out we were doing something much more akin to a 16-character
|
|
|
|
|
polyalphabetic cipher. Oops.
|
|
|
|
|
Thanks to Stefan Mark for finding the flaw!
|
|
|
|
|
o Retire moria3 as a directory server, and add tor26 as a directory
|
|
|
|
|
server.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.6 - 2004-05-02
|
|
|
|
|
o Features:
|
|
|
|
|
- Hidden services and rendezvous points are implemented. Go to
|
|
|
|
|
http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
|
|
|
|
|
hidden services. (This only works via a socks4a proxy such as
|
|
|
|
|
Privoxy, and currently it's quite slow.)
|
|
|
|
|
- We now rotate link (tls context) keys and onion keys.
|
|
|
|
|
- CREATE cells now include oaep padding, so you can tell
|
|
|
|
|
if you decrypted them correctly.
|
|
|
|
|
- Retry stream correctly when we fail to connect because of
|
|
|
|
|
exit-policy-reject (should try another) or can't-resolve-address.
|
|
|
|
|
- When we hup a dirserver and we've *removed* a server from the
|
|
|
|
|
approved-routers list, now we remove that server from the
|
|
|
|
|
in-memory directories too.
|
|
|
|
|
- Add bandwidthburst to server descriptor.
|
|
|
|
|
- Directories now say which dirserver signed them.
|
|
|
|
|
- Use a tor_assert macro that logs failed assertions too.
|
|
|
|
|
- Since we don't support truncateds much, don't bother sending them;
|
|
|
|
|
just close the circ.
|
|
|
|
|
- Fetch randomness from /dev/urandom better (not via fopen/fread)
|
|
|
|
|
- Better debugging for tls errors
|
|
|
|
|
- Set Content-Type on the directory and hidserv descriptor.
|
|
|
|
|
- Remove IVs from cipher code, since AES-ctr has none.
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix an assert trigger for exit nodes that's been plaguing us since
|
|
|
|
|
the days of 0.0.2prexx (thanks weasel!)
|
|
|
|
|
- Fix a bug where we were closing tls connections intermittently.
|
|
|
|
|
It turns out openssl keeps its errors around -- so if an error
|
|
|
|
|
happens, and you don't ask about it, and then another openssl
|
|
|
|
|
operation happens and succeeds, and you ask if there was an error,
|
|
|
|
|
it tells you about the first error.
|
|
|
|
|
- Fix a bug that's been lurking since 27 may 03 (!)
|
|
|
|
|
When passing back a destroy cell, we would use the wrong circ id.
|
|
|
|
|
- Don't crash if a conn that sent a begin has suddenly lost its circuit.
|
|
|
|
|
- Some versions of openssl have an SSL_pending function that erroneously
|
|
|
|
|
returns bytes when there is a non-application record pending.
|
|
|
|
|
- Win32 fixes. Tor now compiles on win32 with no warnings/errors.
|
|
|
|
|
o We were using an array of length zero in a few places.
|
|
|
|
|
o Win32's gethostbyname can't resolve an IP to an IP.
|
|
|
|
|
o Win32's close can't close a socket.
|
|
|
|
|
o Handle windows socket errors correctly.
|
|
|
|
|
o Portability:
|
|
|
|
|
- check for <sys/limits.h> so we build on FreeBSD again, and
|
|
|
|
|
<machine/limits.h> for NetBSD.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.5 - 2004-03-30
|
|
|
|
|
o Install torrc as torrc.sample -- we no longer clobber your
|
|
|
|
|
torrc. (Woo!)
|
|
|
|
|
o Fix mangled-state bug in directory fetching (was causing sigpipes).
|
|
|
|
|
o Only build circuits after we've fetched the directory: clients were
|
|
|
|
|
using only the directory servers before they'd fetched a directory.
|
|
|
|
|
This also means longer startup time; so it goes.
|
|
|
|
|
o Fix an assert trigger where an OP would fail to handshake, and we'd
|
|
|
|
|
expect it to have a nickname.
|
|
|
|
|
o Work around a tsocks bug: do a socks reject when AP connection dies
|
|
|
|
|
early, else tsocks goes into an infinite loop.
|
|
|
|
|
o Hold socks connection open until reply is flushed (if possible)
|
|
|
|
|
o Make exit nodes resolve IPs to IPs immediately, rather than asking
|
|
|
|
|
the dns farm to do it.
|
|
|
|
|
o Fix c99 aliasing warnings in rephist.c
|
|
|
|
|
o Don't include server descriptors that are older than 24 hours in the
|
|
|
|
|
directory.
|
|
|
|
|
o Give socks 'reject' replies their whole 15s to attempt to flush,
|
|
|
|
|
rather than seeing the 60s timeout and assuming the flush had failed.
|
|
|
|
|
o Clean automake droppings from the cvs repository
|
|
|
|
|
o Add in a 'notice' log level for things the operator should hear
|
|
|
|
|
but that aren't warnings
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.4 - 2004-03-26
|
|
|
|
|
o When connecting to a dirserver or OR and the network is down,
|
|
|
|
|
we would crash.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.3 - 2004-03-26
|
|
|
|
|
o Warn and fail if server chose a nickname with illegal characters
|
|
|
|
|
o Port to Solaris and Sparc:
|
|
|
|
|
- include missing header fcntl.h
|
|
|
|
|
- have autoconf find -lsocket -lnsl automatically
|
|
|
|
|
- deal with hardware word alignment
|
|
|
|
|
- make uname() work (solaris has a different return convention)
|
|
|
|
|
- switch from using signal() to sigaction()
|
|
|
|
|
o Preliminary work on reputation system:
|
|
|
|
|
- Keep statistics on success/fail of connect attempts; they're published
|
|
|
|
|
by kill -USR1 currently.
|
|
|
|
|
- Add a RunTesting option to try to learn link state by creating test
|
|
|
|
|
circuits, even when SocksPort is off.
|
|
|
|
|
- Remove unused open circuits when there are too many.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2 - 2004-03-19
|
|
|
|
|
- Include strlcpy and strlcat for safer string ops
|
|
|
|
|
- define INADDR_NONE so we compile (but still not run) on solaris
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre27 - 2004-03-14
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Allow internal tor networks (we were rejecting internal IPs,
|
|
|
|
|
now we allow them if they're set explicitly).
|
|
|
|
|
- And fix a few endian issues.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre26 - 2004-03-14
|
|
|
|
|
o New features:
|
|
|
|
|
- If a stream times out after 15s without a connected cell, don't
|
|
|
|
|
try that circuit again: try a new one.
|
|
|
|
|
- Retry streams at most 4 times. Then give up.
|
|
|
|
|
- When a dirserver gets a descriptor from an unknown router, it
|
|
|
|
|
logs its fingerprint (so the dirserver operator can choose to
|
|
|
|
|
accept it even without mail from the server operator).
|
|
|
|
|
- Inform unapproved servers when we reject their descriptors.
|
|
|
|
|
- Make tor build on Windows again. It works as a client, who knows
|
|
|
|
|
about as a server.
|
|
|
|
|
- Clearer instructions in the torrc for how to set up a server.
|
|
|
|
|
- Be more efficient about reading fd's when our global token bucket
|
|
|
|
|
(used for rate limiting) becomes empty.
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Stop asserting that computers always go forward in time. It's
|
|
|
|
|
simply not true.
|
|
|
|
|
- When we sent a cell (e.g. destroy) and then marked an OR connection
|
|
|
|
|
expired, we might close it before finishing a flush if the other
|
|
|
|
|
side isn't reading right then.
|
|
|
|
|
- Don't allow dirservers to start if they haven't defined
|
|
|
|
|
RecommendedVersions
|
|
|
|
|
- We were caching transient dns failures. Oops.
|
|
|
|
|
- Prevent servers from publishing an internal IP as their address.
|
|
|
|
|
- Address a strcat vulnerability in circuit.c
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre25 - 2004-03-04
|
|
|
|
|
o New features:
|
|
|
|
|
- Put the OR's IP in its router descriptor, not its fqdn. That way
|
|
|
|
|
we'll stop being stalled by gethostbyname for nodes with flaky dns,
|
|
|
|
|
e.g. poblano.
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- If the user typed in an address that didn't resolve, the server
|
|
|
|
|
crashed.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre24 - 2004-03-03
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix an assertion failure in dns.c, where we were trying to dequeue
|
|
|
|
|
a pending dns resolve even if it wasn't pending
|
|
|
|
|
- Fix a spurious socks5 warning about still trying to write after the
|
|
|
|
|
connection is finished.
|
|
|
|
|
- Hold certain marked_for_close connections open until they're finished
|
|
|
|
|
flushing, rather than losing bytes by closing them too early.
|
|
|
|
|
- Correctly report the reason for ending a stream
|
|
|
|
|
- Remove some duplicate calls to connection_mark_for_close
|
|
|
|
|
- Put switch_id and start_daemon earlier in the boot sequence, so it
|
|
|
|
|
will actually try to chdir() to options.DataDirectory
|
|
|
|
|
- Make 'make test' exit(1) if a test fails; fix some unit tests
|
|
|
|
|
- Make tor fail when you use a config option it doesn't know about,
|
|
|
|
|
rather than warn and continue.
|
|
|
|
|
- Make --version work
|
|
|
|
|
- Bugfixes on the rpm spec file and tor.sh, so it's more up to date
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre23 - 2004-02-29
|
|
|
|
|
o New features:
|
|
|
|
|
- Print a statement when the first circ is finished, so the user
|
|
|
|
|
knows it's working.
|
|
|
|
|
- If a relay cell is unrecognized at the end of the circuit,
|
|
|
|
|
send back a destroy. (So attacks to mutate cells are more
|
|
|
|
|
clearly thwarted.)
|
|
|
|
|
- New config option 'excludenodes' to avoid certain nodes for circuits.
|
|
|
|
|
- When it daemonizes, it chdir's to the DataDirectory rather than "/",
|
|
|
|
|
so you can collect coredumps there.
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix a bug in tls flushing where sometimes data got wedged and
|
|
|
|
|
didn't flush until more data got sent. Hopefully this bug was
|
|
|
|
|
a big factor in the random delays we were seeing.
|
|
|
|
|
- Make 'connected' cells include the resolved IP, so the client
|
|
|
|
|
dns cache actually gets populated.
|
|
|
|
|
- Disallow changing from ORPort=0 to ORPort>0 on hup.
|
|
|
|
|
- When we time-out on a stream and detach from the circuit, send an
|
|
|
|
|
end cell down it first.
|
|
|
|
|
- Only warn about an unknown router (in exitnodes, entrynodes,
|
|
|
|
|
excludenodes) after we've fetched a directory.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre22 - 2004-02-26
|
|
|
|
|
o New features:
|
|
|
|
|
- Servers publish less revealing uname information in descriptors.
|
|
|
|
|
- More memory tracking and assertions, to crash more usefully when
|
|
|
|
|
errors happen.
|
|
|
|
|
- If the default torrc isn't there, just use some default defaults.
|
|
|
|
|
Plus provide an internal dirservers file if they don't have one.
|
|
|
|
|
- When the user tries to use Tor as an http proxy, give them an http
|
|
|
|
|
501 failure explaining that we're a socks proxy.
|
|
|
|
|
- Dump a new router.desc on hup, to help confused people who change
|
|
|
|
|
their exit policies and then wonder why router.desc doesn't reflect
|
|
|
|
|
it.
|
|
|
|
|
- Clean up the generic tor.sh init script that we ship with.
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- If the exit stream is pending on the resolve, and a destroy arrives,
|
|
|
|
|
then the stream wasn't getting removed from the pending list. I
|
|
|
|
|
think this was the one causing recent server crashes.
|
|
|
|
|
- Use a more robust poll on OSX 10.3, since their poll is flaky.
|
|
|
|
|
- When it couldn't resolve any dirservers, it was useless from then on.
|
|
|
|
|
Now it reloads the RouterFile (or default dirservers) if it has no
|
|
|
|
|
dirservers.
|
|
|
|
|
- Move the 'tor' binary back to /usr/local/bin/ -- it turns out
|
|
|
|
|
many users don't even *have* a /usr/local/sbin/.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre21 - 2004-02-18
|
|
|
|
|
o New features:
|
|
|
|
|
- There's a ChangeLog file that actually reflects the changelog.
|
|
|
|
|
- There's a 'torify' wrapper script, with an accompanying
|
|
|
|
|
tor-tsocks.conf, that simplifies the process of using tsocks for
|
|
|
|
|
tor. It even has a man page.
|
|
|
|
|
- The tor binary gets installed to sbin rather than bin now.
|
|
|
|
|
- Retry streams where the connected cell hasn't arrived in 15 seconds
|
|
|
|
|
- Clean up exit policy handling -- get the default out of the torrc,
|
|
|
|
|
so we can update it without forcing each server operator to fix
|
|
|
|
|
his/her torrc.
|
|
|
|
|
- Allow imaps and pop3s in default exit policy
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Prevent picking middleman nodes as the last node in the circuit
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre20 - 2004-01-30
|
|
|
|
|
o New features:
|
|
|
|
|
- We now have a deb package, and it's in debian unstable. Go to
|
|
|
|
|
it, apt-getters. :)
|
|
|
|
|
- I've split the TotalBandwidth option into BandwidthRate (how many
|
|
|
|
|
bytes per second you want to allow, long-term) and
|
|
|
|
|
BandwidthBurst (how many bytes you will allow at once before the cap
|
|
|
|
|
kicks in). This better token bucket approach lets you, say, set
|
|
|
|
|
BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
|
|
|
|
|
performance while not exceeding your monthly bandwidth quota.
|
|
|
|
|
- Push out a tls record's worth of data once you've got it, rather
|
|
|
|
|
than waiting until you've read everything waiting to be read. This
|
|
|
|
|
may improve performance by pipelining better. We'll see.
|
|
|
|
|
- Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
|
|
|
|
|
from failed circuits (if they haven't been connected yet) and attach
|
|
|
|
|
to new ones.
|
|
|
|
|
- Expire old streams that haven't managed to connect. Some day we'll
|
|
|
|
|
have them reattach to new circuits instead.
|
|
|
|
|
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix several memory leaks that were causing servers to become bloated
|
|
|
|
|
after a while.
|
|
|
|
|
- Fix a few very rare assert triggers. A few more remain.
|
|
|
|
|
- Setuid to User _before_ complaining about running as root.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre19 - 2004-01-07
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix deadlock condition in dns farm. We were telling a child to die by
|
|
|
|
|
closing the parent's file descriptor to him. But newer children were
|
|
|
|
|
inheriting the open file descriptor from the parent, and since they
|
|
|
|
|
weren't closing it, the socket never closed, so the child never read
|
|
|
|
|
eof, so he never knew to exit. Similarly, dns workers were holding
|
|
|
|
|
open other sockets, leading to all sorts of chaos.
|
|
|
|
|
- New cleaner daemon() code for forking and backgrounding.
|
|
|
|
|
- If you log to a file, it now prints an entry at the top of the
|
|
|
|
|
logfile so you know it's working.
|
|
|
|
|
- The onionskin challenge length was 30 bytes longer than necessary.
|
|
|
|
|
- Started to patch up the spec so it's not quite so out of date.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre18 - 2004-01-02
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fix endian issues with the 'integrity' field in the relay header.
|
|
|
|
|
- Fix a potential bug where connections in state
|
|
|
|
|
AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre17 - 2003-12-30
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Made --debuglogfile (or any second log file, actually) work.
|
|
|
|
|
- Resolved an edge case in get_unique_circ_id_by_conn where a smart
|
|
|
|
|
adversary could force us into an infinite loop.
|
|
|
|
|
|
|
|
|
|
o Features:
|
|
|
|
|
- Each onionskin handshake now includes a hash of the computed key,
|
|
|
|
|
to prove the server's identity and help perfect forward secrecy.
|
|
|
|
|
- Changed cell size from 256 to 512 bytes (working toward compatibility
|
|
|
|
|
with MorphMix).
|
|
|
|
|
- Changed cell length to 2 bytes, and moved it to the relay header.
|
|
|
|
|
- Implemented end-to-end integrity checking for the payloads of
|
|
|
|
|
relay cells.
|
|
|
|
|
- Separated streamid from 'recognized' (otherwise circuits will get
|
|
|
|
|
messed up when we try to have streams exit from the middle). We
|
|
|
|
|
use the integrity-checking to confirm that a cell is addressed to
|
|
|
|
|
this hop.
|
|
|
|
|
- Randomize the initial circid and streamid values, so an adversary who
|
|
|
|
|
breaks into a node can't learn how many circuits or streams have
|
|
|
|
|
been made so far.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre16 - 2003-12-14
|
|
|
|
|
o Bugfixes:
|
|
|
|
|
- Fixed a bug that made HUP trigger an assert
|
|
|
|
|
- Fixed a bug where a circuit that immediately failed wasn't being
|
|
|
|
|
counted as a failed circuit in counting retries.
|
|
|
|
|
|
|
|
|
|
o Features:
|
|
|
|
|
- Now we close the circuit when we get a truncated cell: otherwise we're
|
|
|
|
|
open to an anonymity attack where a bad node in the path truncates
|
|
|
|
|
the circuit and then we open streams at him.
|
|
|
|
|
- Add port ranges to exit policies
|
|
|
|
|
- Add a conservative default exit policy
|
|
|
|
|
- Warn if you're running tor as root
|
|
|
|
|
- on HUP, retry OR connections and close/rebind listeners
|
|
|
|
|
- options.EntryNodes: try these nodes first when picking the first node
|
|
|
|
|
- options.ExitNodes: if your best choices happen to include any of
|
|
|
|
|
your preferred exit nodes, you choose among just those preferred
|
|
|
|
|
exit nodes.
|
|
|
|
|
- options.ExcludedNodes: nodes that are never picked in path building
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre15 - 2003-12-03
|
|
|
|
|
o Robustness and bugfixes:
|
|
|
|
|
- Sometimes clients would cache incorrect DNS resolves, which would
|
|
|
|
|
really screw things up.
|
|
|
|
|
- An OP that goes offline would slowly leak all its sockets and stop
|
|
|
|
|
working.
|
|
|
|
|
- A wide variety of bugfixes in exit node selection, exit policy
|
|
|
|
|
handling, and processing pending streams when a new circuit is
|
|
|
|
|
established.
|
|
|
|
|
- Pick nodes for a path only from those the directory says are up
|
|
|
|
|
- Choose randomly from all running dirservers, not always the first one
|
|
|
|
|
- Increase allowed http header size for directory fetch.
|
|
|
|
|
- Stop writing to stderr (if we're daemonized it will be closed).
|
|
|
|
|
- Enable -g always, so cores will be more useful to me.
|
|
|
|
|
- Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
|
|
|
|
|
|
|
|
|
|
o Documentation:
|
|
|
|
|
- Wrote a man page. It lists commonly used options.
|
|
|
|
|
|
|
|
|
|
o Configuration:
|
|
|
|
|
- Change default loglevel to warn.
|
|
|
|
|
- Make PidFile default to null rather than littering in your CWD.
|
|
|
|
|
- OnionRouter config option is now obsolete. Instead it just checks
|
|
|
|
|
ORPort>0.
|
|
|
|
|
- Moved to a single unified torrc file for both clients and servers.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre14 - 2003-11-29
|
|
|
|
|
o Robustness and bugfixes:
|
|
|
|
|
- Force the admin to make the DataDirectory himself
|
|
|
|
|
- to get ownership/permissions right
|
|
|
|
|
- so clients no longer make a DataDirectory and then never use it
|
|
|
|
|
- fix bug where a client who was offline for 45 minutes would never
|
|
|
|
|
pull down a directory again
|
|
|
|
|
- fix (or at least hide really well) the dns assert bug that was
|
|
|
|
|
causing server crashes
|
|
|
|
|
- warnings and improved robustness wrt clockskew for certs
|
|
|
|
|
- use the native daemon(3) to daemonize, when available
|
|
|
|
|
- exit if bind() fails
|
|
|
|
|
- exit if neither socksport nor orport is defined
|
|
|
|
|
- include our own tor_timegm (Win32 doesn't have its own)
|
|
|
|
|
- bugfix for win32 with lots of connections
|
|
|
|
|
- fix minor bias in PRNG
|
|
|
|
|
- make dirserver more robust to corrupt cached directory
|
|
|
|
|
|
|
|
|
|
o Documentation:
|
|
|
|
|
- Wrote the design document (woo)
|
|
|
|
|
|
|
|
|
|
o Circuit building and exit policies:
|
|
|
|
|
- Circuits no longer try to use nodes that the directory has told them
|
|
|
|
|
are down.
|
|
|
|
|
- Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
|
|
|
|
|
bitcounts (18.0.0.0/8).
|
|
|
|
|
- Make AP connections standby for a circuit if no suitable circuit
|
|
|
|
|
exists, rather than failing
|
|
|
|
|
- Circuits choose exit node based on addr/port, exit policies, and
|
|
|
|
|
which AP connections are standing by
|
|
|
|
|
- Bump min pathlen from 2 to 3
|
|
|
|
|
- Relay end cells have a payload to describe why the stream ended.
|
|
|
|
|
- If the stream failed because of exit policy, try again with a new
|
|
|
|
|
circuit.
|
|
|
|
|
- Clients have a dns cache to remember resolved addresses.
|
|
|
|
|
- Notice more quickly when we have no working circuits
|
|
|
|
|
|
|
|
|
|
o Configuration:
|
|
|
|
|
- APPort is now called SocksPort
|
|
|
|
|
- SocksBindAddress, ORBindAddress, DirBindAddress let you configure
|
|
|
|
|
where to bind
|
|
|
|
|
- RecommendedVersions is now a config variable rather than
|
|
|
|
|
hardcoded (for dirservers)
|
|
|
|
|
- Reloads config on HUP
|
|
|
|
|
- Usage info on -h or --help
|
|
|
|
|
- If you set User and Group config vars, it'll setu/gid to them.
|
|
|
|
|
|
|
|
|
|
Changes in version 0.0.2pre13 - 2003-10-19
|
|
|
|
|
o General stability:
|
|
|
|
|
- SSL_write no longer fails when it returns WANTWRITE and the number
|
|
|
|
|
of bytes in the buf has changed by the next SSL_write call.
|
|
|
|
|
- Fix segfault fetching directory when network is down
|
|
|
|
|
- Fix a variety of minor memory leaks
|
|
|
|
|
- Dirservers reload the fingerprints file on HUP, so I don't have
|
|
|
|
|
to take down the network when I approve a new router
|
|
|
|
|
- Default server config file has explicit Address line to specify fqdn
|
|
|
|
|
|
|
|
|
|
o Buffers:
|
|
|
|
|
- Buffers grow and shrink as needed (Cut process size from 20M to 2M)
|
|
|
|
|
- Make listener connections not ever alloc bufs
|
|
|
|
|
|
|
|
|
|
o Autoconf improvements:
|
|
|
|
|
- don't clobber an external CFLAGS in ./configure
|
|
|
|
|
- Make install now works
|
|
|
|
|
- create var/lib/tor on make install
|
|
|
|
|
- autocreate a tor.sh initscript to help distribs
|
|
|
|
|
- autocreate the torrc and sample-server-torrc with correct paths
|
|
|
|
|
|
|
|
|
|
o Log files and Daemonizing now work:
|
|
|
|
|
- If --DebugLogFile is specified, log to it at -l debug
|
|
|
|
|
- If --LogFile is specified, use it instead of commandline
|
|
|
|
|
- If --RunAsDaemon is set, tor forks and backgrounds on startup
|
|
|
|
|
|
