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Now deprecated in libc >= 2.33
Closes #40309
Signed-off-by: David Goulet <dgoulet@torproject.org>
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The directory_fetches_from_authorities() is used to know if a client or relay
should fetch data from an authority early in the boot process.
We had a condition in that function that made a relay trigger that fetch if it
didn't know its address (so we can learn it). However, when this is called,
the address discovery has not been done yet so it would always return true for
a relay.
Furthermore, it would always trigger a log notice that the IPv4 couldn't be
found which was inevitable because the address discovery process has not been
done yet (done when building our first descriptor).
It is also important to point out that starting in 0.4.5.1-alpha, asking an
authority for an address is done during address discovery time using a one-hop
circuit thus independent from the relay deciding to fetch or not documents
from an authority.
Small fix also is to reverse the "IPv(4|6)Only" flag in the notice so that if
we can't find IPv6 it would output to use IPv4Only.
Fixes #40300
Signed-off-by: David Goulet <dgoulet@torproject.org>
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The comment of that specific unit test wanted 4 ORPorts but for some reasons
we tested for 3 which before the previous commit related to #40289, test would
pass but it was in fact wrong.
Now the code is correct and 4 was in fact correct expected number of ports.
Related to #40289
Signed-off-by: David Goulet <dgoulet@torproject.org>
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In other words, if PublishServerDescriptor is set to 0 and AssumeReachable to
1, then allow a relay to hold a RFC1918 address.
Reasons for this are documented in #40208
Fixes #40208
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Handle the EOF situation for a metrics connection. Furthermore, if we failed
to fetch the data from the inbuf properly, mark the socket as closed because
the caller, connection_process_inbuf(), assumes that we did so on error.
Fixes #40257
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Closes #40221
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While trying to resolve our CI issues, the Windows build broke with an
unused function error:
src/test/test_switch_id.c:37:1: error: ‘unprivileged_port_range_start’
defined but not used [-Werror=unused-function]
We solve this by moving the `#if !defined(_WIN32)` test above the
`unprivileged_port_range_start()` function defintion such that it is
included in its body.
This is an unreviewed commit.
See: tor#40275
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We currently assume that the only way for Tor to listen on ports in the
privileged port range (1 to 1023), on Linux, is if we are granted the
NET_BIND_SERVICE capability. Today on Linux, it's possible to specify
the beginning of the unprivileged port range using a sysctl
configuration option. Docker (and thus the CI service Tor uses) recently
changed this sysctl value to 0, which causes our tests to fail as they
assume that we should NOT be able to bind to a privileged port *without*
the NET_BIND_SERVICE capability.
In this patch, we read the value of the sysctl value via the /proc/sys/
filesystem iff it's present, otherwise we assume the default
unprivileged port range begins at port 1024.
See: tor#40275
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Any lookup now will be certain and not probabilistic as the bloomfilter.
Closes #40269
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Any lookup now will be certain and not probabilistic as the bloomfilter.
Closes #40269
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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Signed-off-by: David Goulet <dgoulet@torproject.org>
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In other words, if we don't have an ORPort configured for a specific family
(IPv4/v6), we don't bother doing address discovery.
Related to #40254
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Give more visibility to directory authority operators during the consensus
voting process.
Closes ticket 40245.
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We used to actually discard ORPorts that were the same port and same family
but they could have different address.
Instead, we need to keep all different ORPorts so we can bind a listener on
each of them. We will publish only one of these in our descriptor though.
Related to #40246
Signed-off-by: David Goulet <dgoulet@torproject.org>
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Some days before this commit, the network experienced a DDoS on the directory
authorities that prevented them to generate a consensus for more than 5 hours
straight.
That in turn entirely disabled onion service v3, client and service side, due
to the subsystem requiring a live consensus to function properly.
We know require a reasonably live consensus which means that the HSv3
subsystem will to its job for using the best consensus tor can find. If the
entire network is using an old consensus, than this should be alright.
If the service happens to use a live consensus while a client is not, it
should still work because the client will use the current SRV it sees which
might be the previous SRV for the service for which it still publish
descriptors for.
If the service is using an old one and somehow can't get a new one while
clients are on a new one, then reachability issues might arise. However, this
is a situation we already have at the moment since the service will simply not
work if it doesn't have a live consensus while a client has one.
Fixes #40237
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 previous parser only considered stats files _starting_ with the
timestamp tag, not stats files having the timestamp tag in a later
position. While this applies to all current stats files, a future
stats file might look differently. Better to fix the function now than
be surprised in another 9 years from now.
This commit also adds a test case for such future stats, and it fixes
stats file paths in newly added unit tests.
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It turns out that 9 years ago, we stopped appending data into stats file and
rather overwrite everytime we have new stats (see commit
a6a127c833eace1100aca7ab8ad118862bb8a8b9)
The load_stats_file() function was still thinking that we could have the same
line many times in the file which turns out to be false since 9 years ago.
However, that did not cause problem until IPv6 connection stats came along
which introduced a new line in conn-stats: "ipv6-conn-bi-direct ...".
Before, that file contained a single line starting with the tag
"conn-bi-direct". That very tag appears also in the IPv6 tag (see above) so
the load_stats_file() function would consider that the IPv6 line as the last
tag to be appeneded to the file and fail to report the line above (for IPv4).
It would actually truncate the IPv6 line and report it (removing the "ipv6-"
part).
In other words, "conn-bi-direct" was not reported and instead
"ipv6-conn-bi-direct" was used without the "ipv6-" part.
This commit refactors the entire function so that now it looks for a
"timestamp tag" to validate and then if everything is fine, returns the entire
content of the file. The refactor simplifies the function, adds logging in
case of failures and modernize it in terms of coding standard.
Unit tests are also added that makes sure the loaded content matches the
entire file if timestamp validation passes.
Fixes #40226
Signed-off-by: David Goulet <dgoulet@torproject.org>
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