* actually sleep when tor has not logged anything
* log at debug level when waiting for tor to log something
* backslash-replace bad UTF-8 characters in logs
* format control messages as ASCII: tor does not accept UTF-8 control commands
Fixes bug 31837; bugfix on 0.3.5.1-alpha.
This patch removes an overly strict tor_assert() and an ignorable BUG()
expression. Both of these would trigger if a PT was unable to configure
itself during startup. The easy way to trigger this is to configure an
obfs4 bridge where you make the obfs4 process try to bind on a port
number under 1024.
See: https://bugs.torproject.org/31091
This patch adds a test to check for whether the exit callback is always
called when process_exec() fails, both on Windows and Unix.
See: https://bugs.torproject.org/31810
This patch fixes an issue where the exit handler is not called for the
given process_t in case CreateProcessA() fails. This could, for example,
happen if the user tries to execute a binary that does not exist.
See: https://bugs.torproject.org/31810
This patch removes a call to tor_assert_unreached() after execve()
failed. This assertion leads to the child process emitting a stack trace
on its standard output, which makes the error harder for the user to
demystify, since they think it is an internal error in Tor instead of
"just" being a "no such file or directory" error.
The process will now instead output "Error from child process: X" where
X is the stringified version of the errno value.
See: https://bugs.torproject.org/31810
We used to have this function so that we could mark our initial
log-to-stdout as specifically temporary so that we would delete it
once regular logs were configured. But it's no longer necessary to
mark these logs as temporary, since we now use a mark-and-sweep
process to ensure that _all_ not-configured logs are closed when we
change our configuration.
Instead, this function will be the basis of a refactoring in how we
handle default logs.
Previously this was done with a big list of options in main.c which
implied "hush" or "quiet". One of these options ("--digests") no
longer existed, but we still checked for it.
Now we use the table of command-line-only arguments to set this
value.
Previously these were implemented with a search in
options_init_from_torrc(), but that led to each option being
declared more than needed: once to say that it was a valid option,
and once to say what it meant.
When tearing down all periodic events during shutdown, disable them first so
their enable flag is updated.
This allows the tor_api.h to relaunch tor properly after a clean shutdown.
Fixes#32058
Signed-off-by: David Goulet <dgoulet@torproject.org>
In case of error, a negative value will be returned or NULL written into
first supplied argument.
This patch uses both cases to comply with style in the specific files.
A tor_vasprintf error in process_vprintf would lead to a NULL dereference
later on in buf_add, because the return value -1 casted to size_t would
pass an assertion check inside of buf_add.
On the other hand, common systems will fail on such an operation, so it
is not a huge difference to a simple assertion. Yet it is better to
properly fail instead of relying on such behaviour on all systems.
Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Found by coverity CID 1454769.
There were a second possible leak that is also fixed in this commit.
Fixes#32063
Signed-off-by: David Goulet <dgoulet@torproject.org>
Code adapted from Rob's proposed patch in #30344.
Also add a comment in connection_mark_for_close_internal_() on why we should
not be adding extra code there without a very good reason.
When considering introduction point of a service's descriptor, do not remove
an intro point that has an established or pending circuit.
Fixes#31652
Signed-off-by: David Goulet <dgoulet@torproject.org>
I'm doing this for consistency, so that all the values for this enum
have the same prefix.
This is an automated commit, generated by the following shell commands:
for fn in $(git ls-tree --name-only -r HEAD src |grep '\.[ch]$'); do \
perl -i -pe 's!\bTAKES_NO_ARGUMENT\b!ARGUMENT_NONE!g;' "$fn"; \
done
When encoding introduction points, we were not checking if that intro points
had an established circuit.
When botting up, the service will pick, by default, 3 + 2 intro points and the
first 3 that establish, we use them and upload the descriptor.
However, the intro point is removed from the service descriptor list only when
the circuit has opened and we see that we have already enough intro points, it
is then removed.
But it is possible that the service establishes 3 intro points successfully
before the other(s) have even opened yet.
This lead to the service encoding extra intro points in the descriptor even
though the circuit is not opened or might never establish (#31561).
Fixes#31548
Signed-off-by: David Goulet <dgoulet@torproject.org>
These tests all invoke the hostname resolver in one way or another,
and therefore potentially block if our DNS server is missing,
absent, or extremely slow. Closes ticket 31841.
Our minimum version is now 0.2.9.5-alpha. Series 0.3.0, 0.3.1,
0.3.2, 0.3.3, and 0.3.4 are now rejected.
Also, extract this version-checking code into a new function, so we
can test it.
Closes ticket 31549.
Also reject 0.3.5.0 through 0.3.5.6-rc as unstable.
We have a getaddrinfo() implementation that we prefer, and a
gethostbyname*() implementation that we fall back on. Give them
both the same interface, and let them be called by the same name.
This is a preparatory step for making them both mockable.
The documentation for this function says that the smartlist can
contain NULLs, but the code only handled NULLs if they were at the
start of the list.
We didn't notice this for a long time, because when Tor is run
normally, the sequence of msg_id_t is densely packed, and so this
list (mapping msg_id_t to channel_id_t) contains no NULL elements.
We could only run into this bug:
* when Tor was running in embedded mode, and starting more than once.
* when Tor ran first with more pubsub messages enabled, and then
later with fewer.
* When the second run (the one with fewer enabled pubsub messages)
had at least some messages enabled, and those messages were not
the ones with numerically highest msg_id_t values.
Fixes bug 31898; bugfix on 47de9c7b0a
in 0.4.1.1-alpha.
There is a bad design choice in two of our configuration types,
where the empty string encodes a value that is not the same as the
default value. This design choice, plus an implementation mistake,
meant that config_dup() did not preserve the value of routerset_t,
and thereby caused bug #31495.
This comment-only patch documents the two types with the problem,
and suggests that implementors try to avoid it in the future.
Closes ticket 31907.
This test failure happened due to a signed/unsigned integer
comparison.
This bug occurred on SunOS, it may also occur on other systems that
use signed char as the default. (And cast 1-byte integer constants
to an unsigned integer.)
Fixes bug 31897; bugfix on 0.4.1.1-alpha.
The log mutex is dynamically initialized, guarded by log_mutex_initialized.
We don't want to destroy it, because after it is destroyed, we won't see
any more logs.
If tor is re-initialized, log_mutex_initialized will still be 1. So we
won't trigger any undefined behaviour by trying to re-initialize the
log mutex.
Part of 31736, but committed in this branch to avoid merge conflicts.
cb_buf_mutex is statically initialised, so we can not destroy it when
we are shutting down the err subsystem. If we destroy it, and then
re-initialise tor, all our backtraces will fail.
Part of 31736, but committed in this branch to avoid merge conflicts.
Move SEVERITY_MASK_IDX() to log.h private/unit tests section, so that
we can use it in log.c, the unit tests, and the fuzzers.
(The test and fuzzer code changes are in a subsequent commit.)
Preparation for bug 31334.
- The function `decrypt_desc_layer` has a cleaner interface.
- `is_superencrypted_layer` changed from `int` -> `bool`
[ticket details](https://trac.torproject.org/projects/tor/ticket/31589)
add(changes/*): changes file
fix(src/features/hs): is_superencrypted changed from `int` -> `bool`
fix(changes/ticket31589): header
add(changes/ticket31589): subsystem(onion services) to change
When processing a %included folder, a bug caused the pointer to
the last element of the options list to be set to NULL when
processing a file with only comments or whitepace. This could
cause options from other files on the same folder to be
discarded depending on the lines after the affected %include.
The code here parses the fields from the microdescriptor, including
possible annotations, and stores them into a microdesc_t object.
This commit is almost pure code movement; I recommend using
--color-moved to review it.
This code is logically independent of the rest of the function, and
goes better in its own function.
This is almost purely code movement; I suggest reviewing with
--color-moved.
This warning would previously be given every time we tried to open a
connection to a foo.exit address, which could potentially be used to
flood the logs. Now, we don't allow this warning to appear more
than once every 15 minutes.
Fixes bug 31466; bugfix on 0.2.2.1-alpha, when .exit was first
deprecated.
Our dimap code asserts if you try to add the same key twice; this
can't happen if everything is running smoothly, but it's possible if
you try to start a relay where secret_onion_key_ntor is the same as
secret_onion_key_ntor.old.
Fixes bug 30916; bugfix on 0.2.4.8-alpha when ntor keys were
introduced.
These macros are used in multiple functions, and as such really
don't belong within a single function.
Also #undef them once we are done with them.
This change makes practracker pass again.
We previously used tor_fragile_assert() to declare that this case
could not happen: VERSIONS cells are always supposed to be
variable-sized, right?
This is incorrect, though. On a v1 link protocol connection, all
cells are fixed-sized. There aren't supposed to be any VERSIONS
cells with this version of the protocol, but apparently, somebody
was messing up. (The v1 link protocol is obsolete, so probably the
implementer responsible didn't mean to be using it.)
Fixes bug 31107. Bugfix on 0.2.4.4-alpha, when we introduced a
tor_fragile_assert() for this case.
There seems to be some unreliability issue with this test on
appveyor.
Addresses ticket 31757; This isn't a final fix for this issue, but
it should make CI pass.
