The functions it warns about are:
assert, memcmp, strcat, strcpy, sprintf, malloc, free, realloc,
strdup, strndup, calloc.
Also, fix a few lingering instances of these in the code. Use other
conventions to indicate _intended_ use of assert and
malloc/realloc/etc.
Users can't run an anonymous client and non-anonymous single
onion service at the same time. We need to know whether we have
any client ports or sockets open to do this check.
When determining whether a client port (SOCKS, Trans, NATD, DNS)
is set, count unix sockets when counting client listeners. This
has no user-visible behaviour change, because these options are
set once and never read in the current tor codebase.
Don't count sockets when setting ControlPort_set, that's what
ControlSocket is for. (This will be reviewed in #19665.)
Don't count sockets when counting server listeners, because the code
that uses these options expects to count externally-visible ports.
(And it would change the behaviour of Tor.)
Check NoOnionTraffic before attaching a stream.
NoOnionTraffic refuses connections to all onion hostnames,
but permits non-onion hostnames and IP addresses.
Check NoDNSRequest, NoIPv4Traffic, and NoIPv6Traffic before
attaching a stream.
NoDNSRequest refuses connections to all non-onion hostnames,
but permits IP addresses.
NoIPv4Traffic refuses connections to IPv4 addresses, but resolves
hostnames.
NoIPv6Traffic refuses connections to IPv6 addresses, but resolves
hostnames.
Combined, they refuse all non-onion hostnames and IP addresses.
OnionTrafficOnly is equivalent to NoDNSRequest, NoIPv4Traffic,
and NoIPv6Traffic.
Add unit tests for parsing and checking option validity.
Add documentation for each flag to the man page.
Add changes file for all of #18693.
Parsing only: the flags do not change client behaviour (yet!)
Rely on onion_populate_cpath to check that we're only using
TAP for the rare hidden service cases.
Check and log if handshakes only support TAP when they should support
ntor.
When a client connects to an intro point not in the client's consensus,
or a hidden service connects to a rend point not in the hidden service's
consensus, we are stuck with using TAP, because there is no ntor link
specifier.
This bug had existed since 0.2.4.7-alpha, but now that we have
FallbackDirs by default, it actually matters.
Fixes bug 19947; bugfix on 0.2.4.7-alpha or maybe 0.2.8.1-alpha.
Rubiate wrote the patch; teor wrote the changes file.
Longer and more explicit log message so we don't confuse users with behind NAT with working configurations and state that public IP addresses only should be provided with "Address", won't work with internal addresses.
These functions were there so that we could abstract the differences
between evbuffer and buf_t. But with the bufferevent removal, this
no longer serves a purpose.
If we know a node's version, and it can't do ntor, consider it not running.
If we have a node's descriptor, and it doesn't have a valid ntor key,
consider it not running.
Refactor these checks so they're consistent between authorities and clients.
Before, they checked for version 0.2.4.18-rc or later, but this
would not catch relays without version lines, or buggy or malicious
relays missing an ntor key.
This fixes#19608, allowing IPv6-only clients to use
microdescriptors, while preserving the ability of bridge clients
to have some IPv4 bridges and some IPv6 bridges.
Fix on c281c036 in 0.2.8.2-alpha.
I grepped and hand-inspected the "it's" instances, to see if any
were supposed to be possessive. While doing that, I found a
"the the", so I grepped to see if there were any more.
Keep the base16 representation of the RSA identity digest in the commit object
so we can use it without using hex_str() or dynamically encoding it everytime
we need it. It's used extensively in the logs for instance.
Fixes#19561
Signed-off-by: David Goulet <dgoulet@torproject.org>
This patch also updates a comment in the same function for accuracy.
Found by Coverity issue 1362985. Partily fixes#19567.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Only some very ancient distributions don't ship with Libevent 2 anymore,
even the oldest supported Ubuntu LTS version has it. This allows us to
get rid of a lot of compat code.
Our sandboxing code would not allow us to write to stats/hidserv-stats,
causing tor to abort while trying to write stats. This was previously
masked by bug#19556.
When sandboxing is enabled, we could not write any stats to disk.
check_or_create_data_subdir("stats"), which prepares the private stats
directory, calls check_private_dir(), which also opens and not just stats() the
directory. Therefore, we need to also allow open() for the stats dir in our
sandboxing setup.
The *get* state query functions for the SRVs now only return const pointers
and the DEL action needs to be used to delete the SRVs from the state.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This patch makes us retain the intermediate list of K=V entries for
the duration of computing our vote, and lets us use that list with
a new function in order to look up parameters before the consensus
is published.
We can't actually use this function yet because of #19011: our
existing code to do this doesn't actually work, and we'll need a new
consensus method to start using it.
Closes ticket #19012.
Commit and reveal length macro changed from int to unsigned long int
(size_t) because of the sizeof().
Signed-off-by: David Goulet <dgoulet@torproject.org>
See ticket #19132 for the clang/llvm warning.
Since voting_schedule is a global static struct, it will be initialized
to zero even without explicitly initializing it with {0}.
This is what the C spec says:
If an object that has automatic storage duration is not initialized
explicitly, its value is indeterminate. If an object that has static
storage duration is not initialized explicitly, then:
— if it has pointer type, it is initialized to a null pointer;
— if it has arithmetic type, it is initialized to (positive or unsigned) zero;
— if it is an aggregate, every member is initialized (recursively) according to these rules;
— if it is a union, the first named member is initialized (recursively) according to these rules.
Code has been changed so every RSA fingerprint for a commit in our state is
validated before being used. This fixes the unit tests by mocking one of the
key function and updating the hardcoded state string.
Also, fix a time parsing overflow on platforms with 32bit time_t
Signed-off-by: David Goulet <dgoulet@torproject.org>
Signed-off-by: George Kadianakis <desnacked@riseup.net>
We assert on it using the ASSERT_COMMIT_VALID() macro in critical places
where we use them expecting a commit to be valid.
Signed-off-by: David Goulet <dgoulet@torproject.org>
The prop250 code used the RSA identity key fingerprint to index commit in a
digestmap instead of using the digest.
To behavior change except the fact that we are actually using digestmap
correctly.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit makes it that tor now uses the shared random protocol by
initializing the subsystem.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Signed-off-by: George Kadianakis <desnacked@riseup.net>
One of the last piece that parses the votes and consensus in order to update
our state and make decision for the SR values.
We need to inform the SR subsystem when we set the current consensus because
this can be called when loaded from file or downloaded from other authorities
or computed.
The voting schedule is used for the SR timings since we are bound to the
voting system.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Signed-off-by: George Kadianakis <desnacked@riseup.net>
This commit adds the commit(s) line in the vote as well as the SR values. It
also has the mechanism to add the majority SRVs in the consensus.
Signed-off-by: George Kadianakis <desnacked@riseup.net>
Signed-off-by: David Goulet <dgoulet@torproject.org>
This adds the logic of commit and SR values generation. Furthermore, the
concept of a protocol run is added that is commit is generated at the right
time as well as SR values which are also rotated before a new protocol run.
Signed-off-by: George Kadianakis <desnacked@riseup.net>
Signed-off-by: David Goulet <dgoulet@torproject.org>
From 0.2.7.2-alpha onwards, Exits would reject all the IP addresses
they knew about in their exit policy. But this may have disclosed
addresses that were otherwise unlisted.
Now, only advertised addresses are rejected by default by
ExitPolicyRejectPrivate. All known addresses are only rejected when
ExitPolicyRejectLocalInterfaces is explicitly set to 1.
