By adding a file to the ClientOnionAuthDir and sending a HUP signal, tor would
load the new file and use it. However, that doesn't work with the Sandbox
since post initilization, nothing can be changed.
Document in the manpage that limitation within the Sandbox description.
Closes#28128
Signed-off-by: David Goulet <dgoulet@torproject.org>
Correctly identify Windows 8.1, Windows 10, and Windows Server 2008
and later from their NT versions.
On recent Windows versions, the GetVersionEx() function may report
an earlier Windows version than the running OS. To avoid user
confusion, add "[or later]" to Tor's version string on affected
versions of Windows.
Remove Windows versions that were never supported by the
GetVersionEx() function.
Stop duplicating the latest Windows version in get_uname().
Fixes bug 28096; bugfix on 0.2.2.34; reported by Keifer Bly.
In conn_close_if_marked(), we can decide to keep a connection open that still
has data to flush on the wire if it is being rate limited on the write side.
However, in this process, we were also looking at the read() side which can
still have token in its bucket and thus not stop the reading. This lead to a
BUG() introduced in 0.3.4.1-alpha that was expecting the read side to be
closed due to the rate limit but which only applies on the write side.
This commit removes any bandwidth check on the read side and simply stop the
read side on the connection regardless of the bucket state. If we keep the
connection open to flush it out before close, we should not read anything.
Fixes#27750
Signed-off-by: David Goulet <dgoulet@torproject.org>
Apparently some freebsd compilers can't tell that 'c' will never
be used uninitialized.
Fixes bug 28413; bugfix on 0.2.9.3-alpha when we added support for
longer AES keys to this function.
We don't use this syscall, but openssl apparently does.
(This syscall puts a socket into a half-closed state. Don't worry:
It doesn't shut down the system or anything.)
Fixes bug 28183; bugfix on 0.2.5.1-alpha where the sandbox was
introduced.
Our tests showed that this function is responsible for a huge number
of our malloc/free() calls. It's a prime candidate for being
memoized.
Closes ticket 27225.
Resume refusing to start with relative file paths and RunAsDaemon
set (regression from the fix for bug 22731).
Fixes bug 28298; bugfix on 0.3.3.1-alpha.
If tor terminates due to SIGNAL HALT before test_rebind.py calls
tor_process.terminate(), an OSError 3 (no such process) is thrown.
Fixes part of bug 27968 on 0.3.5.1-alpha.
Remember, you can't check to see if there are N bytes left in a
buffer by doing (buf + N < end), since the buf + N computation might
take you off the end of the buffer and result in undefined behavior.
Fixes 28202; bugfix on 0.2.0.3-alpha.
It is not enough to look at protover for v3 rendezvous support but also we
need to make sure that the curve25519 onion key is present or in other words
that the descriptor has been fetched and does contain it.
Fixes#27797.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Treat backtrace test failures as expected on NetBSD, OpenBSD, and
macOS/Darwin, until we solve bug 17808.
(FreeBSD failures have been treated as expected since 18204 in 0.2.8.)
Fixes bug 27948; bugfix on 0.2.5.2-alpha.
Before this commit, we would create the descriptor signing key certificate
when first building the descriptor.
In some extreme cases, it lead to the expiry of the certificate which triggers
a BUG() when encoding the descriptor before uploading.
Ticket #27838 details a possible scenario in which this can happen. It is an
edge case where tor losts internet connectivity, notices it and closes all
circuits. When it came back up, the HS subsystem noticed that it had no
introduction circuits, created them and tried to upload the descriptor.
However, in the meantime, if tor did lack a live consensus because it is
currently seeking to download one, we would consider that we don't need to
rotate the descriptors leading to using the expired signing key certificate.
That being said, this commit does a bit more to make this process cleaner.
There are a series of things that we need to "refresh" before uploading a
descriptor: signing key cert, intro points and revision counter.
A refresh function is added to deal with all mutable descriptor fields. It in
turn simplified a bit the code surrounding the creation of the plaintext data.
We keep creating the cert when building the descriptor in order to accomodate
the unit tests. However, it is replaced every single time the descriptor is
uploaded.
Fixes#27838
Signed-off-by: David Goulet <dgoulet@torproject.org>
When storing a descriptor in the client cache, if we are about to replace an
existing descriptor, make sure to close every introduction circuits of the old
descriptor so we don't have leftovers lying around.
Ticket 27471 describes a situation where tor is sending an INTRODUCE1 cell on
an introduction circuit for which it doesn't have a matching intro point
object (taken from the descriptor).
The main theory is that, after a new descriptor showed up, the introduction
points changed which led to selecting an introduction circuit not used by the
service anymore thus for which we are unable to find the corresponding
introduction point within the descriptor we just fetched.
Closes#27471.
Signed-off-by: David Goulet <dgoulet@torproject.org>
It won't be used if there are no authorized client configured. We do that so
we can easily support the addition of a client with a HUP signal which allow
us to avoid more complex code path to generate that cookie if we have at least
one client auth and we had none before.
Fixes#27995
Signed-off-by: David Goulet <dgoulet@torproject.org>
Both client and service had their own code for this. Consolidate into one
place so we avoid duplication.
Closes#27549
Signed-off-by: David Goulet <dgoulet@torproject.org>
Occasionally, key pinning doesn't catch a relay that shares an ed25519
ID with another relay. Log the identity fingerprints and the shared
ed25519 ID when this happens, instead of making a BUG() warning.
Fixes bug 27800; bugfix on 0.3.2.1-alpha.
Commit 488e2b00bf introduced an issue, most
likely introduced by a bad copy paste, that made us stop reading on the
connection if our write bandwidth limit was reached.
The problem is that because "read_blocked_on_bw" was never set, the connection
was never reenabled for reading.
This is most likely the cause of #27813 where bytes were accumulating in the
kernel TCP bufers because tor was not doing reads. Only relays with
RelayBandwidthRate would suffer from this but affecting all relays connecting
to them. And using that tor option is recommended and best practice so many
many relays have it enabled.
Fixes#28089.
