Due to a possible Guard subsystem recursion, when the HS client gets
notified that the directory information has changed, it must run it in a
seperate mainloop event to avoid such issue.
See the ticket for more information on the recursion. This also fixes a
fatal assert.
Fixes#40579
Signed-off-by: David Goulet <dgoulet@torproject.org>
It is possible to not have the descriptor anymore by the time the
rendezvous circuit opens. Don't BUG() on that.
Instead, when sending the INTRODUCE1 cell, make sure the descriptor we
have (or have just fetched) matches what we setup in the rendezvous
circuit.
If not, the circuit is closed and another one is opened for a retry.
Fixes#40576
Signed-off-by: David Goulet <dgoulet@torproject.org>
Prometheus needs unique labels and so this bug was causing an onion
service with multiple ports to have multiple "port=" label for the
metrics requiring a port label.
Fixes#40581
Signed-off-by: David Goulet <dgoulet@torproject.org>
Prometheus needs unique labels and so this bug was causing an onion
service with multiple ports to have multiple "port=" label for the
metrics requiring a port label.
Fixes#40581
Signed-off-by: David Goulet <dgoulet@torproject.org>
It is possible that a scheduled channel ended up with 0 bytes in its
outbuf after the scheduling loop and having an outbuf table entry
indicating that we need to flush bytes on the wire after the loop.
This lead to attempt to write 0 bytes up to the TLS layer that would
prevent such action.
All in all, this fixes wasted CPU cycles on attempting to flush nothing.
Fixes#40548
Signed-off-by: David Goulet <dgoulet@torproject.org>
We removed HSIntro=3 and HSDir=1 that are v2 specific. Since 0.3.5.17,
we do not support introducing or being a directory for onion service v2.
Closes#40509
Signed-off-by: David Goulet <dgoulet@torproject.org>
Change it from "timeout" to "tor_timeout" in order to indicate that the
DNS timeout is one from tor's DNS threshold and not the DNS server
itself.
Fixes#40527
Signed-off-by: David Goulet <dgoulet@torproject.org>
Tor has configure libevent to attempt up to 3 times a DNS query for a
maximum of 5 seconds each. Once that 5 seconds has elapsed, it consider
the query "Timed Out" but tor only gets a timeout if all 3 attempts have
failed.
For example, using Unbound, it has a much higher threshold of timeout.
It is well defined in
https://www.nlnetlabs.nl/documentation/unbound/info-timeout/ and has
some complexity to it. But the gist is that if it times out, it will be
much more than 5 seconds.
And so the Tor DNS timeouts are more of a "UX issue" rather than a
"network issue". For this reason, we are removing this metric from the
overload general signal.
See https://gitlab.torproject.org/tpo/network-health/team/-/issues/139
for more information.
Fixes#40527
Signed-off-by: David Goulet <dgoulet@torproject.org>
This avoids performing and then freeing a lot of small mallocs() if
the hash line has too many elements.
Fixes one case of bug 40472; resolves OSS-Fuzz 38363. Bugfix on
0.3.1.1-alpha when the consdiff parsing code was introduced.
The connect failure cache had a bad interaction with retrying connections
to our guards or bridges when we go offline and then come back online --
while offline we would fail to connect and cache this result, and then
when we return we would decline to even attempt to connect, because our
failure cache said it wouldn't work.
Now only cache connect failures for relays when we connected to them
because of somebody else's EXTEND request.
Fixes bug 40499; bugfix on 0.3.3.4-alpha.
From LibreSSL versions 3.2.1 through 3.4.0, our configure script
would conclude that TLSv1.3 as supported, but it actually wasn't.
This led to annoying breakage like #40128 and #40445.
Now we give an error message if we try to build with one of those
versions.
Closes#40511.
Previously the logic was reversed, and always gave the wrong answer.
This has no other effect than to change whether we suppress
deprecated API warnings.
Fixes#40429; bugfix on 0.3.5.13.
Mingw headers sometimes like to define alternative scanf/printf
format attributes depending on whether they're using clang, UCRT,
MINGW_ANSI_STDIO, or the microsoft version of printf/scanf. This
change attempts to use the right one on the given platform.
This is an attempt to fix part of #40355.
Our code doesn't allow it and so this prevents an assert() crash if the
DirPort is for instance IPv6 only.
Fixes#40494
Signed-off-by: David Goulet <dgoulet@torproject.org>
When we don't yet have a descriptor for one of our bridges, disable
the entry guard retry schedule on that bridge. The entry guard retry
schedule and the bridge descriptor retry schedule can conflict,
e.g. where we mark a bridge as "maybe up" yet we don't try to fetch
its descriptor yet, leading Tor to wait (refusing to do anything)
until it becomes time to fetch the descriptor.
Fixes bug 40497; bugfix on 0.3.0.3-alpha.
we do a notice-level log when we decide we *don't* have enough dir
info, but in 0.3.5.1-alpha (see commit eee62e13d9, #14950) we lost our
corresponding notice-level log when things come back.
bugfix on 0.3.5.1-alpha; fixes bug 40496.
When we try to fetch a bridge descriptor and we fail, we mark
the guard as failed, but we never scheduled a re-compute for
router_have_minimum_dir_info().
So if we had already decided we needed to wait for this new descriptor,
we would just wait forever -- even if, counterintuitively, *losing* the
bridge is just what we need to *resume* using the network, if we had it
in state GUARD_REACHABLE_MAYBE and we were stalling to learn this outcome.
See bug 40396 for more details.
