Thanks to proposal 315 / ticket #30132, more fields are now
required in these documents. But ancient Tors that try to upload
obsolete documents were causing the authorities to log warnings
about missing fields, and to do so very spammily.
We now detect the missing fields before tokenizing, and log at
debug. This is a bit of ugliness, but it's probably a safer choice
than making _all_ unparseable-desc warnings into debug-level logs.
I'm looking at identity-ed25519 in extrainfos and proto in
routerdescs because they were (I believe) the latest-added fields in
Tor's history: any Tor that lacks them will also lack the other
newly required fields.
Fixes bug #40238; bugfix on 0.4.5.1-alpha.
We're getting "fallback annotation annotation in unreachable code"
warnings when we build with ALL_BUGS_ARE_FATAL. This patch fixes
that.
Fixes bug 40241. Bugfix on 0.3.5.4-alpha.
If we get an address suggestion from a directory authority and we have no
address configured or discovered, log it at notice level so the operator can
learn what address will be used by Tor.
Fixes#40201
Signed-off-by: David Goulet <dgoulet@torproject.org>
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.
It turns out that 9 years ago, we stopped appending data into stats file and
rather overwrite everytime we have new stats (see commit
a6a127c833)
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>
When making sure we have a Bridge line with a ClientTransportPlugin, we
now check in the managed proxy list and so we can catch any missing
ClientTransportPlugin for a Bridge line.
Fixes#40106
Signed-off-by: David Goulet <dgoulet@torproject.org>
Previously, our code would send back an error if the socks5 request
parser said anything but DONE. But there are other non-error cases,
like TRUNCATED: we shouldn't send back errors for them.
This patch lowers the responsibility for setting the error message
into the parsing code, since the actual type of the error message
will depend on what problem was encountered.
Fixes bug 40190; bugfix on 0.3.5.1-alpha.
Adds a more user-friendly error message when the configuration is
reloaded and a new %include is added that makes its unglobbing
access files/folders not allowed by the seccomp sandbox.
Previously, "--list-fingerprint --quiet" was an error. Now, the
handler for optional arguments to "--list-fingerprint" can tell that
"--quiet" is a flag, not an argument.
This only affects flags that take an _optional_ argument, so you can
still put your torrc file in a location starting with "-".
Closes#40223.
The "-static" compile flag was set globally which means that all autoconf test
were attempting to be built statically and lead to failures of detecting
OpenSSL libraries and others.
This commit adds this flag only to the "tor" binary build.
There is also a fix on where to find libevent.a since it is using libtool, it
is in .libs/.
At this commit, there are still warnings being emitted that informs the user
that the built binary must still be linked dynamically with glibc.
Fixes#40111
Signed-off-by: David Goulet <dgoulet@torproject.org>
The Python code is such a nice addition to the documentation and the C
code for better understanding of onion v3 address generation. Straight
to the point and easy to understand.
Unfortunately it did not work with my distribution's Python version. I
have adjusted the code to support Python 3.8 (tested with 3.8.6) and
to still be compatible with Python 2.
Currently Tor fails with the following error:
src/test/test_stats.c: In function ‘test_rephist_v3_onions’:
src/test/test_stats.c:527:22: error: overflow in implicit constant conversion [-Werror=overflow]
update_approx_time(10101010101);
This patch changes the constant passed to update_approx_time() to avoid
the overflow in the implicit conversion.
See: tor#40199
The rest of rephist.c is doing the same kind of unsigned casting. For example
see rep_hist_format_buffer_stats() and rep_hist_format_exit_stats().
The previous switch to %ld made Appveyor fail:
https://ci.appveyor.com/project/torproject/tor/builds/36118502
When sending the stream level SENDME, it is possible the cirucit was marked
for close or any other failures that can occur. These events can occur
naturally.
Fixes#40142
Signed-off-by: David Goulet <dgoulet@torproject.org>
The function in charge of removing duplicate ORPorts from our configured ports
was skipping all non ORPorts port but only for the outer loop thus resulting
in comparing an ORPort with a non-ORPort which lead to problems.
For example, tor configured with the following would fail:
ORPort auto
DirPort auto
Both end up being the same configuration except that one is a OR listener and
one is a Dir listener. Thus because of the missing check in the inner loop,
they looked exactly the same and thus one is removed.
Fixes#40195
Signed-off-by: David Goulet <dgoulet@torproject.org>
First, this commit moves the launch_dummy_circuit_as_needed() function into
relay_find_addr.c and renames it to relay_addr_learn_from_dirauth(). This is
an attempt to centralize anything relate with address discovery in the right
module.
Second, when building a descriptor and we fail to discover our address,
immediately launch a dummy circuit to an authority in an attempt to learn our
descriptor.
It is still only done every 20 minutes even though the descriptor build is
done every minute. We ought to avoid load on the authority and if we can't
learn in the first place our address from them, chances are more things are
wrong.
Related to #40071
Signed-off-by: David Goulet <dgoulet@torproject.org>
Regularly, tor looks if its IP has changed. It does the entire auto discovery
process again. However, it is possible that it does not find anything.
Instead of thinking the IP changed to an unknown address, look at our cache
and see if that value has changed.
The reason for this is because if tor gets its address as a suggestion from a
directory authority, it is because the auto discovery failed and thus that
address should be consider for the IP change check.
Related to #40071
Signed-off-by: David Goulet <dgoulet@torproject.org>
Tor now can learn its address from a NETINFO cell coming from an authority.
Thus, instead from launching a dummy descriptor fetch to learn the address
from the directory response (unauthenticated), we simply now launch a one-hop
testing circuit.
Related to #40071
Signed-off-by: David Goulet <dgoulet@torproject.org>
This changes the behaviour of `tor --version` in such a way.
```console
src/app/tor --version
Tor version 0.4.5.1-alpha-dev (git-46ccde66a97d7985).
Tor is running on Linux with Libevent 2.1.12-stable, OpenSSL 1.1.1h, Zlib 1.2.11, Liblzma 5.2.4, Libzstd 1.4.5 and Glibc 2.31 as libc.
Tor compiled with GCC version 10.2.0
```
Fixes#32102
Commit c3a0f75796 added this feature for ORPort
that we ignore any port that is not the family of our default address when
parsing the port. So if port_parse_config() was called with an IPv4 default
address, all IPv6 address would be ignored.
That makes sense for ORPort since we call twice port_parse_config() for
0.0.0.0 and [::] but for the rest of the ports, it is not good since a
perfectly valid configuration can be:
SocksPort 9050
SocksPort [::1]:9050
Any non-ORPort only binds by default to an IPv4 except the ORPort that binds
to both IPv4 and IPv6 by default.
The fix here is to always parse all ports within port_parse_config() and then,
specifically for ORPort, remove the duplicates or superseding ones. The
warning is only emitted when a port supersedes another.
A unit tests is added to make sure SocksPort of different family always exists
together.
Fixes#40183
Signed-off-by: David Goulet <dgoulet@torproject.org>
There were three separate places where we were hitting a sandbox Bug
warning before we actually exited.
Fixes#40094; bugfix on 0.3.1.1-alpha when %includes were introduced.
Typos found with codespell.
Please keep in mind that this should have impact on actual code
and must be carefully evaluated:
src/core/or/lttng_circuit.inc
- ctf_enum_value("CONTROLER", CIRCUIT_PURPOSE_CONTROLLER)
+ ctf_enum_value("CONTROLLER", CIRCUIT_PURPOSE_CONTROLLER)
We already did this, but we did it by accident, which is pretty
risky: if we hadn't, then our code would have treated extra data in
the inbuf as having been transmitted as TLS-authenticated data.
Closes ticket 40017; Found by opara.
This way, if we guess wrong about whether the library has it,
we don't conflict with the library's headers.
Fixes#40181; bug not in any released version.
Previously, hashlib.shake_256 was a class (if present); now it can
also be a function. This change invalidated our old
compatibility/workaround code, and made one of our tests fail.
Fixes bug 40179; bugfix on 0.3.1.6-rc when the workaround code was
added.
In the past, only authorities and clients had to use that function because of
the SRV subsystem. However, because of its use in rep_hist_hs_stats_init() it
will now also be used by relays when bootstrapping without a consensus. Make it
do something sensible.
Another approach (instead of using magic values) would be to wait
initialization of HSv3 stats until we get a consensus but that seems messy to
schedule.
Another approach would be to make dirauth_sched_get_configured_interval() also
work for relays (particularly when TestingNetwork is enabled), but that also
seems a good amount of work.
The "engines.h" header has lots of stuff; the "opensslv.h" header
has the version number, which is all we actually need here.
We need to do this because we're about to change this header to
conditionally define OPENSSL_SUPPRESS_DEPRECATED, and it would be
too late to do so if we'd already included "engines.h".
The loop in the earlier patch would invoke undefined behavior in two
ways: First, it would check whether it was looking at a space before
it checked whether the pointer was in-range. Second, it would let a
pointer reach a position _before_ the start of a string, which is
not allowed.
I've removed the assertion about empty messages: empty messages can
be their own warning IMO.
I've also added tests for this formatting code, to make sure it
actually works.
The "METRICS_PREFIX" was not expanded but rather used as a litteral. Fix that
by just removing the define and using "tor_" directly.
Reviewed-by: Alexander Færøy <ahf@torproject.org>
Signed-off-by: David Goulet <dgoulet@torproject.org>
The total number of rendezvous circuit created and the number of established
ones which is a gauge that decreases to keep an updated counter.
Related to #40063
Signed-off-by: David Goulet <dgoulet@torproject.org>
At this commit, a new service registers to the module and a store is created.
It also remove itself from the metrics module if it goes away.
In order to hook into the metrics subsystem, this commit attaches the HS
subsystem into the subsystem global list so its get_metrics() call can be
accessible.
HS initialization is still _not_ done through the subsys module as it is
likely require much more testing.
Related to #40063
Signed-off-by: David Goulet <dgoulet@torproject.org>
First I began with a set of candidates:
The client's _required_ list starts with all the protocols
supported by every release in 0.2.9-stable through current
master.
The client's _required_ list starts with all the protocols
supported by every release in 0.3.5-stable through current
master.
Everybody's _recommended_ list starts with all the protocols
supported by every release in 0.3.5-stable through current master.
Then I removed the protocol versions that we do not actually want to
require or recommend:
DirCache=1 (deprecated)
HSDir=1, HSIntro=1-3, HSRend=1 (deprecated)
(All HS* protocol requirements for clients)
Link=1-3 (deprecated)
LinkAuth=1 (obsolete)
Relay=1 (obsolete)
Make it possible to specify multiple ConsensusParams torrc
lines.
Now directory authority operators can for example put the
main ConsensusParams config in one torrc file and then add to it
from a different torrc file.
Closes ticket 40164.
When calling `circpad_send_padding_cell_for_callback()`, the flag
`is_padding_timer_scheduled` was not resetted to 0 which caused an issue
in the circpad simulator.
This commit fixes this problem.
Fixes#32671.
Cons=1 is the old format of consensuses, without ed25519 keys. It
is no longer required or recommended.
Cons=2 is the new format of consensuses, with ed25519 keys. It
is now required.
(Similarly for Desc=1,2 and Microdesc=1,2)
No supported client or relay versions should be affected by this
change, since these versions are supported by clients and relays
running 0.2.9 and later. It will only take effect once enough
authorities vote for it.
Closes ticket 40162.
The "protos" field is mandatory, and so are Ed25519 signatures.
Also, remove formats_rsa (the version without Ed25519), since
RSA-only relays are no longer supported.
Had to replace these since we're updating the list of required fields.
These are taken from a chutney instance. Shockingly, this is enough
to make the test_dir_handle_get.c tests pass again.
These tests used a hardcoded vote with a hardcoded digest. That
vote didn't have any pr lines, and so it is now invalid. I've
adjusted the testing code so that it mocks the signature-checking,
so that we can more easily change the contents of the vote.
This was fairly simple: just had to replace the examples with ones
that had ntor keys. There were a couple of example chutney
routerinfos that I had to replace too.
I also removed tests for producing microdescs via consensus methods
that we don't support any longer.
