Tor checks that the flag matches the configured onion service anonymity.
Tor refuses to create unflagged onion service using ADD_ONION, if they
would be non-anonymous. The error is:
512 Tor is in non-anonymous onion mode
Similarly, if the NonAnonymous flag is present, and Tor has the default
anonymous onion config:
512 Tor is in anonymous onion mode
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.
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.
base16_decodes() now returns the number of decoded bytes. It's interface
changes from returning a "int" to a "ssize_t". Every callsite now checks the
returned value.
Fixes#14013
Signed-off-by: David Goulet <dgoulet@torproject.org>
So, back long ago, XXX012 meant, "before Tor 0.1.2 is released, we
had better revisit this comment and fix it!"
But we have a huge pile of such comments accumulated for a large
number of released versions! Not cool.
So, here's what I tried to do:
* 0.2.9 and 0.2.8 are retained, since those are not yet released.
* XXX+ or XXX++ or XXX++++ or whatever means, "This one looks
quite important!"
* The others, after one-by-one examination, are downgraded to
plain old XXX. Which doesn't mean they aren't a problem -- just
that they cannot possibly be a release-blocking problem.
Remove support for "GET /tor/bytes.txt" DirPort request, and
"GETINFO dir-usage" controller request, which were only available
via a compile-time option in Tor anyway.
Feature was added in 0.2.2.1-alpha. Resolves ticket 19035.
Only when we were actually flushing the cell stats to a controller
would we free them. Thus, they could stay in RAM even after the
circuit was freed (eg if we didn't have any controllers).
Fixes bug 18673; bugfix on 0.2.5.1-alpha.
Modify callers to correctly handle these new NULL returns:
* fix assert in onion_extend_cpath
* warn and discard circuit in circuit_get_open_circ_or_launch
* warn, discard circuit, and tell controller in handle_control_extendcircuit
exit-policy/reject-private lists the reject rules added by
ExitPolicyRejectPrivate. This makes it easier for stem to
display exit policies.
Add unit tests for getinfo exit-policy/*.
Completes ticket #17183. Patch by "teor".
Performing lookups in both the client and service side descriptor
caches from the same rend_cache_lookup_entry() function increases the
risk of accidental API misuse.
I'm separating the lookup functions to keep the caches distinct.
Including the replica number in the HS_DESC CREATED event provides
more context to a control port client. The replica allows clients
to more easily identify each replicated descriptor from the
independantly output control events.
Adds an Enum which represents the different types of rendezvous
descriptor caches. This argument is passed in each call to
rend_cache_lookup_entry() to specify lookup in the client-side or
service-side descriptor caches.
Adds a control command to fetch a local service descriptor from the
service descriptor cache. The local service descriptor cache is
referenced by the onion address of the service.
This control command is documented in the control spec.
The HS_DESC CREATED event should be emmited when a new service descriptor
is generated for a local rendevous service. This event is documented
in the control spec.
This commit resolves ticket #16291.
Adds a service descriptor cache which is indexed by service ID. This
descriptor cache is used to store service descriptors generated by a
local rendevous service.
The service-side cach can be queried by calling rend_cache_lookup_entry()
with the 'service' argument set to 1.
We used to use this when we had some controllers that would accept
long names and some that wouldn't. But it's been obsolete for a
while, and it's time to strip it out of the code.
Previously we'd put these strings right on the controllers'
outbufs. But this could cause some trouble, for these reasons:
1) Calling the network stack directly here would make a huge portion
of our networking code (from which so much of the rest of Tor is
reachable) reachable from everything that potentially generated
controller events.
2) Since _some_ events (EVENT_ERR for instance) would cause us to
call connection_flush(), every control_event_* function would
appear to be able to reach even _more_ of the network stack in
our cllgraph.
3) Every time we generated an event, we'd have to walk the whole
connection list, which isn't exactly fast.
This is an attempt to break down the "blob" described in
http://archives.seul.org/tor/dev/Mar-2015/msg00197.html -- the set of
functions from which nearly all the other functions in Tor are
reachable.
Closes ticket 16695.
The control port was using set_max_file_descriptors() with a limit set to 0
to query the number of maximum socket Tor can use. With the recent changes
to that function, a check was introduced to make sure a user can not set a
value below the amount we reserved for non socket.
This commit adds get_max_sockets() that returns the value of max_sockets so
we can stop using that "setter" function to get the current value.
Finally, the dead code is removed that is the code that checked for limit
equal to 0. From now on, set_max_file_descriptors() should never be used
with a limit set to 0 for a valid use case.
Fixes#16697
Signed-off-by: David Goulet <dgoulet@ev0ke.net>
For FAILED and RECEIVED action of the HS_DESC event, we now sends back the
descriptor ID at the end like specified in the control-spec section 4.1.25.
Fixes#15881
Signed-off-by: David Goulet <dgoulet@ev0ke.net>
"+HSPOST" and the related event changes allow the uploading of HS
descriptors via the control port, and more comprehensive event
monitoring of HS descriptor upload status.
Every callsite that use to allocate a rend_data_t object now use the
rend_data_client/service_create() function.
Signed-off-by: David Goulet <dgoulet@ev0ke.net>
These commands allow for the creation and management of ephemeral
Onion ("Hidden") services that are either bound to the lifetime of
the originating control connection, or optionally the lifetime of
the tor instance.
Implements #6411.
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>
This adds the key "hs/client/desc/id/<ADDR>" to the GETINFO command used to
lookup the given onion address in the client hs descriptor cache.
If found, prints it formatted as specified in section 1.3 of rend-spec.txt.
Fixes#14845
Signed-off-by: David Goulet <dgoulet@ev0ke.net>
