Also, fix a small typo in a comment.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

The expected message of the command now expects "650+" and "650 OK".

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

The "SERVER=" option now supports LongName described in the control-spec.txt

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

The HS_DESC_CONTENT event results in multiple line thus must be prefixed
with a "650+" and ending with "650 OK".

Reported-by: Damian Johnson <atagar@torproject.org>
Signed-off-by: David Goulet <dgoulet@ev0ke.net>

The HS_DESC event was using rend_data_t from the dir connection to reply the
onion address and authentication type. With the new HSFETCH command, it's
now possible to fetch a descriptor only using the descriptor id thus
resulting in not having an onion address in any HS_DESC event.

This patch removes rend_query from the hs desc control functions and replace
it by an onion address string and an auth type.

On a successful fetch, the service id is taken from the fetched descriptor.
For that, an extra parameter is added to "store as a client" function that
contains the cache entry stored.

This will make the control event functions scale more easily over time if
other values not present in rend_data_t are needed since the rend_data from
the dir connection might not contained everything we need.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

Big refactor of the HS client descriptor fetch functionnality. This allows
to fetch an HS descriptor using only a descriptor ID. Furthermore, it's also
possible to provide a list of HSDir(s) now that are used instead of the
automatically choosen one.

The approach taken was to add a descriptor_id field to the rend_data_t
structure so it can be used, if available, by the HS client. The onion
address field however has priority over it that is if both are set, the
onion address is used to fetch the descriptor.

A new public function is introduced called rend_client_fetch_v2_desc(...)
that does NOT lookup the client cache before fetching and can take a list of
HSDirs as a parameter.

The HSFETCH control command now uses this new function thus making it work
and final.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

As defined in section 4.1.26 in the control-spec.txt, this new event replies
the content of a successfully fetched HS descriptor. This also adds a unit
test for the controller event.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

This adds the command on the controller side that parses and validate
arguments but does nothing for now. The HS desriptor fetch must be
modularized a bit more before we can use the command.

See control-spec.txt section 3.26 for more information on this command.

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

Signed-off-by: David Goulet <dgoulet@ev0ke.net>

Till someone writes get_interface_address6 interface enumeration that is
routing table aware, these tests will continue to fail on certain
systems because the get_interface_address6() code is broken.

Fixes bug 15591; patch from joelanders

Fixes coverity defect CID 1293337, not in any released version of tor.