We now keep descriptor that we can't decode due to missing client
authorization in the cache.
This new function is used when new client authorization are added and to tell
the client cache to retry decoding.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit extract most of the code that dirclient.c had to handle the end of
a descriptor directory requests (fetch). It is moved into hs_client.c in order
to have one single point of entry and the rest is fully handled by the HS
subsystem.
As part of #30382, depending on how the descriptor ended up stored (decoded or
not), different SOCKS error code can be returned.
Signed-off-by: David Goulet <dgoulet@torproject.org>
In order to achieve this, the parse_extended_hostname() had to be refactored
to return either success or failure and setting the hostname type in the given
parameter.
The reason for that is so it can detect invalid onion addresses that is having
a ".onion", the right length but just not passing validation.
That way, we can send back the prop304 ExtendedError "X'F1' Onion Service
Descriptor Is Invalid" to notify the SOCKS connection of the invalid onion
address.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
This will allow us to callback into the HS subsytem depending on the decoding
status and return an extended SOCKS5 error code depending on the decoding
issue.
This is how we'll be able to tell the SocksPort connection if we are missing
or have bad client authorization for a service.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
We now keep the descriptor in the cache, obviously not decoded, if it can't be
decrypted for which we believe client authorization is missing or unusable
(bad).
This way, it can be used later once the client authorization are added or
updated.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit introduces the hs_desc_decode_status_t enum which aims at having
more fine grained error code when decoding a descriptor.
This will be useful in later commits when we support keeping a descriptor that
can't be decrypted due to missing or bad client authorization creds.
No behavior change.
Part of #30382.
Signed-off-by: David Goulet <dgoulet@torproject.org>
No code behavior change. This removes duplicate code that was finding all
entry connections for a specific onion service identity key.
The find_entry_conns() helper function is introduced for that.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit defines the new extended error codes. It also flags the socks
request object that it can use them.
Part of #30382
Signed-off-by: David Goulet <dgoulet@torproject.org>
This new flag tells tor that it can send back the SOCKS5 extended error code
detailed in prop304.
Part of #30382
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>
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>
