Stop adding unneeded channel padding right after we finish flushing
to a connection that has been trying to flush for many seconds.
Instead, treat all partial or complete flushes as activity on the
channel, which will defer the time until we need to add padding.
This fix should resolve confusing and scary log messages like
"Channel padding timeout scheduled 221453ms in the past."
Fixes bug 22212; bugfix on 0.3.1.1-alpha.
I think technically we could resolve bug 22212 by adding a call to
channel_timestamp_active() only in the finished_flushing case. But I added
a call in the flushed_some case too since that seems to more accurately
reflect the notion of "active".
This patch updates the HiddenServiceVersion man-page entry to only
accept either 2 or 3 as argument and not a list of multiple versions.
See: https://bugs.torproject.org/25026
Previously, we wouldn't do this when running with a routerinfo_t in
some cases, leading to many needless calls to the protover module.
This change also cleans up the code in nodelist.c a bit.
Fixes bug 25008; bugfix on 0.2.9.4-alpha.
Without this patch, not only will TLS1.3 not work with Tor, but
OpenSSL 1.1.1 with TLS1.3 enabled won't build any connections at
all: It requires that either TLS1.3 be disabled, or some TLS1.3
ciphersuites be listed.
Closes ticket 24978.
For 23847, we want Tor to be able to shut down and then restart in
the same process. Here's a patch to make the Tor binary do that.
To test it, you need to build with --enable-restart-debugging, and
then you need to set the environment variable TOR_DEBUG_RESTART.
With this option, Tor will then run for 5 seconds, then restart
itself in-process without exiting. This only happens once.
You can change the 5-second interval using
TOR_DEBUG_RESTART_AFTER_SECONDS.
Implements ticket 24583.
Fix an "off by 2" error in counting rendezvous failures on the onion
service side.
While we thought we would stop the rendezvous attempt after one failed
circuit, we were actually making three circuit attempts before giving up.
Fixes bug 24895; bugfix on 0.0.6.
Fix a set of false positives where relays would consider connections
to other relays as being client-only connections (and thus e.g.
deserving different link padding schemes) if those relays fell out
of the consensus briefly.
Now we look only at the initial handshake and whether the connection
authenticated as a relay.
Fixes bug 24898; bugfix on 0.3.1.1-alpha.
New-style (v3) onion services now obey the "max rendezvous circuit
attempts" logic.
Previously they would make as many rendezvous circuit attempts as they
could fit in the MAX_REND_TIMEOUT second window before giving up.
Fixes bug 24894; bugfix on 0.3.2.1-alpha.
Define TOR_PRIuSZ as minGW compiler doesn't support zu format specifier for
size_t type.
Fixes#24861 on ac9eebd.
Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>
... in get_interface_addresses_ioctl().
This pointer alignment issue exists on x86_64 macOS, but is unlikely to exist
elsewhere. (i386 macOS only requires 4-byte alignment, and other OSs have
8-byte ints.)
Fixes bug 24733; not in any released version of tor.
Avoid selecting fallbacks that change their IP addresses too often.
Select more fallbacks by ignoring the Guard flag, and allowing lower
cutoffs for the Running and V2Dir flags. Also allow a lower bandwidth,
and a higher number of fallbacks per operator (5% of the list).
Implements ticket 24785.
Add the generateFallbackDirLine.py script for automatically generating
fallback directory mirror lines from relay fingerprints. No more typos!
Add the lookupFallbackDirContact.py script for automatically looking up
operator contact info from relay fingerprints.
Implements ticket 24706.
This removes some redundant repeated lines.
Ticket 24681 will maintain the current fallback weights by changing
Tor's default fallback weight to 10.
Implements ticket 24679.
These are all about local variables shadowing global
functions. That isn't normally a problem, but at least one
compiler we care about seems to treat this as a case of -Wshadow
violation, so let's fix it.
Fixes bug 24634; bugfix on 0.3.2.1-alpha.
Tor now sets IPv6 preferences on rewrite_node_address_for_bridge() even if
there is only ri or rs. It always warns about them.
Also Tor now sets the IPv6 address in rs as well as it sets the one in ri.
Fixes#24572 on 9e9edf7 in 0.2.4.5-alpha.
Fixes#24573 on c213f27 in 0.2.8.2-alpha.
Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>
Tor test now checks if "ping -6 -c 1 -W 1 ::1" works when "ping6 -c 1 -W 1 ::1"
fails on tests.
Fixes#24677; bugfix in 0.2.9.3-alpha.
Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>
When the fascist_firewall_choose_address_ functions don't find a
reachable address, set the returned address to the null address and port.
This is a precautionary measure, because some callers do not check the
return value.
Fixes bug 24736; bugfix on 0.2.8.2-alpha.
This makes clients on the public tor network prefer to bootstrap off fallback
directory mirrors.
This is a follow-up to 24679, which removed weights from the default fallbacks.
Implements ticket 24681.
We've been seeing problems with destroy cells queues taking up a
huge amount of RAM. We can mitigate this, since while a full packed
destroy cell takes 514 bytes, we only need 5 bytes to remember a
circuit ID and a reason.
Fixes bug 24666. Bugfix on 0.2.5.1-alpha, when destroy cell queues
were introduced.
With extra_space negative, it means that the "notsent" queue is quite large so
we must consider that value with the current computed tcp_space. If we end up
to have negative space, we should not add more data to the kernel since the
notsent queue is just too filled up.
Fixes#24665
Signed-off-by: David Goulet <dgoulet@torproject.org>
Instead of using INT_MAX as a write limit for KISTLite, use the lower layer
limit which is using the specialized num_cells_writeable() of the channel that
will down the line check the connection's outbuf and limit it to 32KB
(OR_CONN_HIGHWATER).
That way we don't take the chance of bloating the connection's outbuf and we
keep the cells in the circuit queue which our OOM handler can take care of,
not the outbuf.
Finally, this commit adds a log_debug() in the update socket information
function of KIST so we can get the socket information in debug.
Fixes#24671
Signed-off-by: David Goulet <dgoulet@torproject.org>
Exposing cell_queues_get_total_allocation(), buf_get_total_allocation(),
tor_compress_get_total_allocation(), tor_compress_get_total_allocation() when
hit MaxMemInQueues threshold.
Fixes#24501
Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>
This patch adds support for MainloopStats that allow developers to get
main event loop statistics via Tor's heartbeat status messages. The new
status log message will show how many succesful, erroneous, and idle
event loop iterations we have had.
See: https://bugs.torproject.org/24605
Adding tor_remove_file(filename) and refactoring tor_cleanup().
Removing CookieAuthFile and ExtORPortCookieAuthFile when tor_cleanup() is
called.
Fixes#23271.
Signed-off-by: Fernando Fernandez Mancera <ffernandezmancera@gmail.com>
Using absolute_msec requires a 64-bit division operation every time
we calculate it, which gets expensive on 32-bit architectures.
Instead, just use the lazy "monotime_coarse_get()" operation, and
don't convert to milliseconds until we absolutely must.
In this case, it seemed fine to use a full monotime_coarse_t rather
than a truncated "stamp" as we did to solve this problem for the
timerstamps in buf_t and packed_cell_t: There are vastly more cells
and buffer chunks than there are channels, and using 16 bytes per
channel in the worst case is not a big deal.
There are still more millisecond operations here than strictly
necessary; let's see any divisions show up in profiles.
* ADDS several `AC_MSG_RESULT`s which print the result of our checks
for our rust dependencies and a check for a suitable rustc compiler
version.
* FIXES#24612: https://bugs.torproject.org/24612
Retry directory downloads when we get our first bridge descriptor
during bootstrap or while reconnecting to the network. Keep retrying
every time we get a bridge descriptor, until we have a reachable bridge.
Stop delaying bridge descriptor fetches when we have cached bridge
descriptors. Instead, only delay bridge descriptor fetches when we
have at least one reachable bridge.
Fixes bug 24367; bugfix on 0.2.0.3-alpha.
In KIST, we could have a small congestion window value than the unacked
packets leading to a integer overflow which leaves the tcp_space value to be
humongous.
This has no security implications but it results in KIST scheduler allowing to
send cells on a potentially saturated connection.
Found by #24423. Fixes#24590.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This function leaks memory when the event_base is freed before the
event itself fires. That's not harmful, but it's annoying when
trying to debug other memory leaks.
Fixes bug 24584; bugfix on 0.2.8.1-alpha.
