When we enter overlap mode we start using the next hsdir index of
relays. However, we only compute the next hsdir index of relays when we
receive a consensus or their descriptor. This means that there is a
window of time between entering the overlap period and fetching the
consensus where relays have their next hsdir index uninitialized. This
patch fixes this by recomputing all hsdir indices when we first enter
the overlap period.
We want to reupload our descriptor if its set of responsible HSDirs
changed to minimize reachability issues.
This patch adds a callback everytime we get new dirinfo which checks if
the hash ring changed and reuploads descriptor if needed.
Our Windows compiler treats "time_t" as long long int but Linux likes it
long int so cast those to make Windows happy.
Signed-off-by: David Goulet <dgoulet@torproject.org>
- Fix various ssize_t/size_t confusions in the tests.
- Fix a weird memset argument:
"bad_memset: Argument -16 in memset loses precision in
memset(&desc_two->blinded_kp.pubkey.pubkey, -16, 32UL)."
- Fix check_after_deref instance in check_state_line_for_service_rev_counter():
"check_after_deref: Null-checking items suggests that it may be null,
but it has already been dereferenced on all paths leading to the
check."
I repurposed the old directory_request_set_hs_ident() into a new
directory_request_upload_set_hs_ident() which is only used for the
upload purpose and so it can assert on the dir_purpose.
When coding the client-side we can make a second function for fetch.
- Fix log message format string.
- Do extra circuit purpose check.
- wipe memory in a clear function
- Make sure we don't double add intro points in our list
- Make sure we don't double close intro circuits.
- s/tt_u64_op/tt_i64_op/
Make this function public so we can use it both in hs_circuit.c and
hs_service.c to avoid code duplication.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Change the timing for intro point's lifetime and maximum amount of circuit we
are allowed to launch in a TestingNetwork. This is particurlarly useful for
chutney testing to test intro point rotation.
Signed-off-by: David Goulet <dgoulet@torproject.org>
When the circuit is about to be freed which has been marked close before, for
introduction circuit we now call this has_closed() callback so we can cleanup
any introduction point that have retried to many times or at least flag them
that their circuit is not established anymore.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit refactors the handle_hs_exit_conn() function introduced at a prior
commit that connects the rendezvous circuit to the edge connection used to
connect to the service virtual port requested in a BEGIN cell.
The refactor adds the support for prop224 adding the
hs_service_set_conn_addr_port() function that has the same purpose has
rend_service_set_connection_addr_port() from the legacy code.
The rend_service_set_connection_addr_port() has also been a bit refactored so
the common code can be shared between the two HS subsystems (legacy and
prop224).
In terms of functionallity, nothing has changed, we still close the circuits
in case of failure for the same reasons as the legacy system currently does.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Introduction point are rotated either if we get X amounts of INTRODUCE2 cells
on it or a time based expiration. This commit adds two consensus parameters
which are the min and max value bounding the random value X.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Imagine a Tor network where you have only 8 nodes available due to some
reasons. And your hidden service wants 8 introduction points. Everything is
fine but then a node goes down bringing the network to 7. The service will
retry 3 times that node and then give up but keep it in a failure cache for 5
minutes (INTRO_CIRC_RETRY_PERIOD) so it doesn't retry it non stop and exhaust
the maximum number of circuit retry.
In the real public network today, this is unlikely to happen unless the
ExcludeNodes list is extremely restrictive.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Add this helper function that can lookup and return all the needed object from
a circuit identifier. It is a pattern we do often so make it nicer and avoid
duplicating it everywhere.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Add the entry point from the circuit subsystem of "circuit has opened" which
is for all type of hidden service circuits. For the introduction point, this
commit actually adds the support for handling those circuits when opened and
sending ESTABLISH_INTRO on a circuit.
Rendevzou point circuit aren't supported yet at this commit.
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit adds the functionality for a service to build its descriptor.
Also, a global call to build all descriptors for all services is added to the
service scheduled events.
Signed-off-by: David Goulet <dgoulet@torproject.org>
Add the main loop entry point to the HS service subsystem. It is run every
second and make sure that all services are in their quiescent state after that
which means valid descriptors, all needed circuits opened and latest
descriptors have been uploaded.
For now, only v2 is supported and placeholders for v3 actions for that main
loop callback.
Signed-off-by: David Goulet <dgoulet@torproject.org>
