Commit Graph

3900 Commits

Author SHA1 Message Date
teor (Tim Wilson-Brown)
2d33d192fc Add ClientUseIPv4 and ClientPreferIPv6DirPort torrc options
ClientUseIPv4 0 tells tor to avoid IPv4 client connections.
ClientPreferIPv6DirPort 1 tells tor to prefer IPv6 directory connections.

Refactor policy for IPv4/IPv6 preferences.

Fix a bug where node->ipv6_preferred could become stale if
ClientPreferIPv6ORPort was changed after the consensus was loaded.

Update documentation, existing code, add unit tests.
2016-01-29 07:13:57 +11:00
Nick Mathewson
24fcb6adbb Add an edge_about_to_close() call to ap_about_to_close().
Fixes #17876
2015-12-16 18:52:34 -05:00
Nick Mathewson
3317cd3a1f Merge branch 'maint-0.2.7' 2015-12-16 09:24:40 -05:00
Nick Mathewson
33b5bfb948 Don't call pthread_condattr_setclock() unless it exists
Fixes bug 17819; bugfix on 0.2.6.3-alpha (specifically, d684dbb0).
2015-12-16 09:23:44 -05:00
Nick Mathewson
bb23ad3e47 Merge remote-tracking branch 'teor/feature17863' 2015-12-16 08:48:28 -05:00
teor (Tim Wilson-Brown)
978210d5a8 Wait for busy authorities/fallbacks rather than ignoring excluded nodes
Applies the 6c443e987d fix to router_pick_directory_server_impl.

6c443e987d applied to directory servers chosen from the consensus,
and was:
"Tweak the 9969 fix a little

If we have busy nodes and excluded nodes, then don't retry with the
excluded ones enabled. Instead, wait for the busy ones to be nonbusy."
2015-12-16 09:07:11 +11:00
teor (Tim Wilson-Brown)
e2e09a2dbe Warn when comparing against an AF_UNSPEC address in a policy
It produces unexpected results, and it's most likely a bug.
2015-12-16 08:51:59 +11:00
Nick Mathewson
6ba8afe5f8 Merge remote-tracking branch 'teor/feature15775-fallback-v9-squashed' 2015-12-15 14:04:00 -05:00
teor
4c1c2a313d Add Fallback Directory Candidate Selection Script
"Tor has included a feature to fetch the initial consensus from nodes
 other than the authorities for a while now. We just haven't shipped a
 list of alternate locations for clients to go to yet.

 Reasons why we might want to ship tor with a list of additional places
 where clients can find the consensus is that it makes authority
 reachability and BW less important.

 We want them to have been around and using their current key, address,
 and port for a while now (120 days), and have been running, a guard,
 and a v2 directory mirror for most of that time."

Features:
* whitelist and blacklist for an opt-in/opt-out trial.
* excludes BadExits, tor versions that aren't recommended, and low
  consensus weight directory mirrors.
* reduces the weighting of Exits to avoid overloading them.
* places limits on the weight of any one fallback.
* includes an IPv6 address and orport for each FallbackDir, as
  implemented in #17327. (Tor won't bootstrap using IPv6 fallbacks
  until #17840 is merged.)
* generated output includes timestamps & Onionoo URL for traceability.
* unit test ensures that we successfully load all included default
  fallback directories.

Closes ticket #15775. Patch by "teor".
OnionOO script by "weasel", "teor", "gsathya", and "karsten".
2015-12-16 05:54:40 +11:00
Nick Mathewson
aa4be914f0 Merge remote-tracking branch 'teor/feature17327-v4' 2015-12-15 13:19:18 -05:00
Nick Mathewson
aba39ea390 Merge branch 'feature8195_small_squashed' 2015-12-15 13:11:06 -05:00
Nick Mathewson
405a8d3fb4 Update KeepCapabilities based on comments from asn
* The option is now KeepBindCapabilities
* We now warn if the user specifically asked for KeepBindCapabilities
  and we can't deliver.
* The unit tests are willing to start.
* Fewer unused-variable warnings.
* More documentation, fewer misspellings.
2015-12-15 13:10:57 -05:00
Nick Mathewson
e8cc839e41 Add ability to keep the CAP_NET_BIND_SERVICE capability on Linux
This feature allows us to bind low ports when starting as root and
switching UIDs.

Based on code by David Goulet.

Implement feature 8195
2015-12-15 13:10:57 -05:00
Nick Mathewson
a7d44731d9 Merge remote-tracking branch 'teor/feature4483-v10-squashed' 2015-12-15 12:57:57 -05:00
teor (Tim Wilson-Brown)
35bbf2e4a4 Prop210: Add schedules for simultaneous client consensus downloads
Prop210: Add attempt-based connection schedules

Existing tor schedules increment the schedule position on failure,
then retry the connection after the scheduled time.

To make multiple simultaneous connections, we need to increment the
schedule position when making each attempt, then retry a (potentially
simultaneous) connection after the scheduled time.

(Also change find_dl_schedule_and_len to find_dl_schedule, as it no
longer takes or returns len.)

Prop210: Add multiple simultaneous consensus downloads for clients

Make connections on TestingClientBootstrapConsensus*DownloadSchedule,
incrementing the schedule each time the client attempts to connect.

Check if the number of downloads is less than
TestingClientBootstrapConsensusMaxInProgressTries before trying any
more connections.
2015-12-16 04:37:49 +11:00
Nick Mathewson
54433993c7 Merge branch 'feature17576-UseDefaultFallbackDirs-v2-squashed' 2015-12-15 12:19:08 -05:00
teor (Tim Wilson-Brown)
080ae03ee4 Add UseDefaultFallbackDirs for hard-coded directory mirrors
UseDefaultFallbackDirs enables any hard-coded fallback
directory mirrors. Default is 1, set it to 0 to disable fallbacks.

Implements ticket 17576.
Patch by "teor".
2015-12-15 12:19:01 -05:00
Nick Mathewson
fec5aa75f4 Merge branch 'maint-0.2.7' 2015-12-15 11:55:46 -05:00
cypherpunks
07cca627ea Fix backtrace compilation on FreeBSD
On FreeBSD backtrace(3) uses size_t instead of int (as glibc does). This
causes integer precision loss errors when we used int to store its
results.

The issue is fixed by using size_t to store the results of backtrace(3).

The manual page of glibc does not mention that backtrace(3) returns
negative values. Therefore, no unsigned integer wrapping occurs when its
result is stored in an unsigned data type.
2015-12-15 11:52:00 -05:00
cypherpunks
b463773fc3 Add changes file for 17804 2015-12-15 11:34:00 -05:00
Nick Mathewson
39b2f2d35e Merge branch 'maint-0.2.7' 2015-12-14 13:21:16 -05:00
cypherpunks
ff843ed39f Add changes file for 17818 2015-12-14 13:11:20 -05:00
teor (Tim Wilson-Brown)
1c2366ea43 Authorities on IPv6: minor fixes and unit tests
Update the code for IPv6 authorities and fallbacks for function
argument changes.

Update unit tests affected by the function argument changes in
the patch.

Add unit tests for authority and fallback:
 * adding via a function
 * line parsing
 * adding default authorities
(Adding default fallbacks is unit tested in #15775.)
2015-12-14 23:46:47 +11:00
Nick Mathewson
85003f4c80 Add a new ipv6=address:orport flag to DirAuthority and FallbackDir
Resolves # 6027
2015-12-14 23:43:50 +11:00
Jamie Nguyen
dcbfe46cd6 Defer creation of Unix socket until after setuid 2015-12-10 20:00:06 -05:00
Jamie Nguyen
ec4ef68271 Introduce DataDirectoryGroupReadable boolean 2015-12-10 20:00:06 -05:00
Jamie Nguyen
08c7ceb5df Permit filesystem group to be root 2015-12-10 20:00:06 -05:00
Nick Mathewson
81c06b132f Remove already-merged changes files. 2015-12-10 10:00:56 -05:00
Nick Mathewson
7186e2a943 Merge remote-tracking branch 'public/feature17694_strongest_027' 2015-12-10 09:02:10 -05:00
cypherpunks
7e7188cb00 Assert when the TLS contexts fail to initialize 2015-12-10 08:50:40 -05:00
cypherpunks
91ab2ac5aa Assert that memory held by rephist is freed
The internal memory allocation and history object counters of the
reputation code can be used to verify the correctness of (part of) the
code. Using these counters revealed an issue where the memory allocation
counter is not decreased when the bandwidth arrays are freed.

A new function ensures the memory allocation counter is decreased when a
bandwidth array is freed.

This commit also removes an unnecessary cast which was found while
working on the code.
2015-12-09 11:31:17 -05:00
Nick Mathewson
b3eba8ef12 Merge branch 'refactor-effective-entry' 2015-12-09 11:05:41 -05:00
Nick Mathewson
caff665309 Merge remote-tracking branch 'teor/first-hop-no-private' 2015-12-09 10:47:59 -05:00
Nick Mathewson
d6a3b1f019 changes file for bug17791 2015-12-09 10:38:13 -05:00
cypherpunks
3dcb7320cf Add changes file for 17776 2015-12-09 10:22:26 -05:00
Nick Mathewson
7f074e08d8 Merge branch 'feature13696_squashed' 2015-12-08 12:35:26 -05:00
Yawning Angel
353c71516e Add support for getrandom() and getentropy() when available
Implements feature #13696.
2015-12-08 12:34:53 -05:00
Nick Mathewson
2259de0de7 Always hash crypto_strongest_rand() along with some prng
(before using it for anything besides feeding the PRNG)

Part of #17694
2015-12-08 10:54:42 -05:00
Nick Mathewson
252149e8b4 Merge branch 'maint-0.2.7' 2015-12-08 10:23:56 -05:00
Nick Mathewson
c6a337557a Merge branch 'maint-0.2.6' into maint-0.2.7 2015-12-08 10:23:41 -05:00
Nick Mathewson
1adc2bf66f Merge branch 'maint-0.2.5' into maint-0.2.6 2015-12-08 10:20:21 -05:00
Nick Mathewson
c3d11b119d Merge branch 'maint-0.2.4' into maint-0.2.5 2015-12-08 10:20:14 -05:00
Arlo Breault
5138f5ca69 Ensure node is a guard candidate when picking a directory guard 2015-12-08 09:49:01 -05:00
Nick Mathewson
b585cf3ca3 Merge branch 'maint-0.2.7' 2015-12-08 09:44:01 -05:00
Nick Mathewson
eeb9751ead Merge branch 'maint-0.2.6' into maint-0.2.7 2015-12-08 09:43:42 -05:00
Nick Mathewson
b53ff86067 Merge branch 'maint-0.2.5' into maint-0.2.6 2015-12-08 09:43:25 -05:00
Nick Mathewson
4328525770 Merge branch 'maint-0.2.4' into maint-0.2.5 2015-12-08 09:38:48 -05:00
Nick Mathewson
b0867fec96 Fix a compilation warning introduced by clang 3.6
There was a dead check when we made sure that an array member of a
struct was non-NULL.  Tor has been doing this check since at least
0.2.3, maybe earlier.

Fixes bug 17781.
2015-12-08 09:37:05 -05:00
Nick Mathewson
1321608786 Merge branch 'maint-0.2.7' 2015-12-08 08:45:09 -05:00
Nick Mathewson
e9bf584694 Format IPv6 policies correctly.
Previously we'd suppressed the mask-bits field in the output when
formatting a policy if it was >=32.  But that should be a >=128 if
we're talking about IPv6.

Since we didn't put these in descriptors, this bug affects only log
messages and controller outputs.

Fix for bug 16056.  The code in question was new in 0.2.0, but the
bug was introduced in 0.2.4 when we started supporting IPv6 exits.
2015-12-08 08:44:58 -05:00