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With this commit, a relay now emits metrics event on the MetricsPort
related to how many onionskins were handled (processed or dropped) for
each handshake type.
Related to #40367
Signed-off-by: David Goulet <dgoulet@torproject.org>
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With this commit, a relay now emits metrics event on the MetricsPort
related to the OOM invocation for:
- DNS cache
- GeoIP database
- Cell queues
- HSDir caches
Everytime the OOM is invoked, the number of bytes is added to the
metrics counter for that specific type of invocation.
Related to #40367
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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The basic functions for the relay subsystem to expose metrics onto the
MetricsPort.
Part of #40367
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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It is a common function that a lot of subsystem can use which is to
format a label so move it out of the HS subsystem into the more generic
metrics library.
Signed-off-by: David Goulet <dgoulet@torproject.org>
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An entry can have multiple labels but only print once the comments at
the first one. This follows the Promtheus best practices.
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Patch from cypherpunks. Closes #40330.
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This patch unbreaks the current build after tor!369 landed.
See: https://bugs.torproject.org/tpo/core/tor/40371
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This change permits the newfstatat() system call, and fixes issues
40382 (and 40381).
This isn't a free change. From the commit:
// Libc 2.33 uses this syscall to implement both fstat() and stat().
//
// The trouble is that to implement fstat(fd, &st), it calls:
// newfstatat(fs, "", &st, AT_EMPTY_PATH)
// We can't detect this usage in particular, because "" is a pointer
// we don't control. And we can't just look for AT_EMPTY_PATH, since
// AT_EMPTY_PATH only has effect when the path string is empty.
//
// So our only solution seems to be allowing all fstatat calls, which
// means that an attacker can stat() anything on the filesystem. That's
// not a great solution, but I can't find a better one.
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As of GCC 11.1.1, the compiler warns us about code like this:
if (a)
b;
c;
and that's a good thing: we wouldn't want to "goto fail". But we
had an instance if this in circuituse.c, which was making our
compilation sad.
Fixes bug 40380; bugfix on 0.3.0.1-alpha.
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Welcome back ONION_V2_HOSTNAME! :)
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Turns out that passing client authorization keys to ADD_ONION for v3 was
not working because we were not setting the "is_client_auth_enabled"
flag to true once the clients were configured. This lead to the
descriptor being encoded without the clients.
This patch removes that flag and instead adds an inline function that
can be used to check if a given service has client authorization
enabled.
This will be much less error prone of needing to keep in sync the client
list and a flag instead.
Fixes #40378
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Only v2 onion services needed this, and they are now gone.
Closes #40374.
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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Conflicts:
src/test/test.c
Minor comment issue.
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Fixes #40356
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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This function has been a no-op since Libevent 2.0.4-alpha, when
libevent got an arc4random() implementation. Libevent has finally
removed it, which will break our compilation unless we stop calling
it. (This is currently breaking compilation in OSS-fuzz.)
Closes #40371.
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