Commit Graph

390 Commits

Author SHA1 Message Date
Nick Mathewson
039bd01767 Add a wrapper for a common networkstatus param pattern
We frequently want to check a networkstatus parameter only when it
isn't overridden from the torrc file.
2016-12-16 11:06:16 -05:00
Nick Mathewson
8da24c99bd Split bridge functions into a new module.
This patch is just:
   * Code movement
   * Adding headers here and there as needed
   * Adding a bridges_free_all() with a call to it.

It breaks compilation, since the bridge code needed to make exactly
2 calls into entrynodes.c internals.  I'll fix those in the next
commit.
2016-11-30 14:42:52 -05:00
Nick Mathewson
800dff1308 Merge branch 'maint-0.2.9' 2016-11-07 09:32:21 -05:00
Nick Mathewson
d82ffb77f3 Merge branch '20499_part1_029_squashed', remote-tracking branches 'teor/bug20591_029' and 'teor/bug20533_029' into maint-0.2.9 2016-11-07 09:20:13 -05:00
teor
e819d420c5
When downloading certificates, check for related failures
If a consensus expires while we are waiting for certificates to download,
stop waiting for certificates.

If we stop waiting for certificates less than a minute after we started
downloading them, do not consider the certificate download failure a
separate failure.

Fixes bug 20533; bugfix on commit e0204f21 in 0.2.0.9-alpha.
2016-11-08 00:01:20 +11:00
teor
1bb28cecd9
Ensure relays don't make multiple connections during bootstrap
Relays do not deliberately launch multiple attempts, so the impact of this
bug should be minimal. This fix also defends against bugs like #20499.

Bugfix on 0.2.8.1-alpha.
2016-11-07 23:05:55 +11:00
Nick Mathewson
cb35a7c271 Merge branch 'maint-0.2.9' 2016-11-01 13:05:45 -04:00
teor
3158777d35
Rename routerstatus_version_supports_ntor to *_supports_extend2_cells
This helps avoid the confusion that caused bug 20472.
Bugfix on commit 10aa913 from #19163 in tor-0.2.9.3-alpha.
2016-10-31 17:02:21 +11:00
Nick Mathewson
a5f07a6c2a More module-level documentation. 2016-10-26 11:02:57 -04:00
Nick Mathewson
ac707ae70a Merge branch 'bug20176_v2' 2016-10-14 10:23:24 -04:00
Nick Mathewson
97337844b7 Merge branch 'protover_v2_squashed' 2016-09-26 11:00:08 -07:00
Nick Mathewson
1ab641a70e Remove version_known, and subtly change the meaning of protocols_known 2016-09-26 10:56:53 -07:00
Nick Mathewson
0a3da5ce79 prop264: sometimes check client _and_ server versions.
As before, we check server protocols whenever server_mode(options)
is true and we check client protocols whenever server_mode(options)
is false.

Additionally, we now _also_ check client protocols whenever any
client port is set.
2016-09-26 10:56:53 -07:00
Nick Mathewson
f33b90324a Include protocol versions in votes. 2016-09-26 10:56:51 -07:00
Nick Mathewson
7f718c46f3 Actually check for missing protocols and exit as appropriate. 2016-09-26 10:56:49 -07:00
Nick Mathewson
cca1e0acff Add necessary code to parse and handle required/recommended protocols 2016-09-26 10:56:49 -07:00
Nick Mathewson
cff1274b06 Simplify a few functions that dont need to call get_latest_consensus() so much 2016-09-21 15:20:27 -04:00
Nick Mathewson
266d7733f8 fix wide lines 2016-09-21 15:15:17 -04:00
Nick Mathewson
2196c7ad64 Remove current_consensus macro.
It's a macro that calls down to a function whose behavior has been
getting progresively more complicated.... but we named it as if it
were a variable.  That's not so smart.  So, replace it with a
function call to a function that was just doing "return
current_consensus".

Fixes bug 20176.
2016-09-21 15:13:19 -04:00
Nick Mathewson
62ee4f185f Merge branch 'maint-0.2.8' 2016-09-20 19:30:45 -04:00
Nick Mathewson
9b5a19c64b Don't look at any routerstatus_t when the networkstatus is inconsistent
For a brief moment in networkstatus_set_current_consensus(), the old
consensus has been freed, but the node_t objects still have dead
pointers to the routerstatus_t objects within it.  During that
interval, we absolutely must not do anything that would cause Tor to
look at those dangling pointers.

Unfortunately, calling the (badly labeled!) current_consensus macro
or anything else that calls into we_use_microdescriptors_for_circuits(),
can make us look at the nodelist.

The fix is to make sure we identify the main consensus flavor
_outside_ the danger zone, and to make the danger zone much much
smaller.

Fixes bug 20103.  This bug has been implicitly present for AGES; we
just got lucky for a very long time.  It became a crash bug in
0.2.8.2-alpha when we merged 35bbf2e4a4 to make
find_dl_schedule start looking at the consensus, and 4460feaf28
which made node_get_all_orports less (accidentally) tolerant of
nodes with a valid ri pointer but dangling rs pointer.
2016-09-20 10:43:58 -04:00
Nick Mathewson
bbaa7d09a0 Merge remote-tracking branch 'teor/reject-tap-v6' 2016-08-29 15:02:11 -04:00
Andrea Shepard
05853485a4 Debug logging for router/consensus descriptor download resets 2016-08-10 03:34:54 +00:00
teor (Tim Wilson-Brown)
579a80d4ae
Clients avoid choosing nodes that can't do ntor
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.
2016-07-15 09:55:49 +10:00
teor (Tim Wilson-Brown)
a76d528bec
Clients no longer download descriptors for relays without ntor 2016-07-15 09:55:49 +10:00
Nick Mathewson
aaa3129043 Merge remote-tracking branch 'dgoulet/ticket16943_029_05-squashed'
Trivial Conflicts:
	src/or/or.h
	src/or/routerparse.c
2016-07-01 15:29:05 -04:00
David Goulet
39be8af709 prop250: Add unit tests
Signed-off-by: David Goulet <dgoulet@torproject.org>
Signed-off-by: George Kadianakis <desnacked@riseup.net>
2016-07-01 14:01:41 -04:00
David Goulet
ca6ceec112 prop250: Put commits and SRVs in votes/consensus
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>
2016-07-01 13:25:03 -04:00
Nick Mathewson
ded7e8093c Fix three -Wtautological-constant-out-of-range-compare warnings. 2016-06-30 14:08:28 -04:00
Andrea Shepard
657eaee6ae Expose GETINFO download status statics for test suite and make things mockable 2016-06-29 05:55:42 +00:00
Andrea Shepard
8798ca4be2 Add router descriptor download status queries to GETINFO 2016-06-29 05:55:42 +00:00
Andrea Shepard
8cf9fe5ba6 Expose consensus download statuses on the control port 2016-06-27 16:38:37 +00:00
Nick Mathewson
703254a832 Merge remote-tracking branch 'public/bug15942_v2_alternative' 2016-06-23 09:01:24 -04:00
nikkolasg
568dc27a19 Make base16_decodes return number of decoded bytes
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>
2016-06-20 08:44:58 -04:00
Andrea Shepard
5104e5645f Use exponential backoffs for consensus downloads 2016-06-18 16:32:16 +00:00
Andrea Shepard
695b0bd1d5 Implement DL_SCHED_RANDOM_EXPONENTIAL support for download_status_t 2016-06-18 16:32:16 +00:00
Nick Mathewson
4f1a04ff9c Replace nearly all XXX0vv comments with smarter ones
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.
2016-05-30 16:18:16 -04:00
Nick Mathewson
dcc4fd4403 Merge branch 'maint-0.2.8' 2016-05-19 16:05:13 -04:00
teor (Tim Wilson-Brown)
c5d87ef6af
Describe what happens when we get a consensus, but no certificates
Comment-only change
2016-05-19 12:35:09 -04:00
Nick Mathewson
d718c717a6 Merge branch 'maint-0.2.8' 2016-05-19 08:25:12 -04:00
Nick Mathewson
9f217c83b0 Merge branch 'bug18809_028_squashed' into maint-0.2.8 2016-05-19 08:17:02 -04:00
teor (Tim Wilson-Brown)
d5c70d7102 Restore and improve download schedule unit tests 2016-05-19 07:58:41 -04:00
teor (Tim Wilson-Brown)
ab0a7e2961 Remove consensus_max_download_tries by refactoring
No behaviour change

This function is used twice. The code is simpler if we split
it up and inline it where it is used.
2016-05-19 07:58:40 -04:00
teor (Tim Wilson-Brown)
84ab26c320 Stop downloading consensuses when a consensus has been downloaded
Previosuly, during bootstrap, we would continue to download
consensuses if we had a consensus, but didn't have the certificates
to validate it.
2016-05-19 07:58:40 -04:00
Nick Mathewson
36909674b4 Merge remote-tracking branch 'teor/bug18963-remember-v2' 2016-05-17 12:15:53 -04:00
teor (Tim Wilson-Brown)
cdb528d841
Fetch certificates from the same directory as previous certificates
Improves the fix to #18963.
2016-05-11 13:30:30 -04:00
teor (Tim Wilson-Brown)
730cfeb6bd
Fetch certificates from the same directory as the consensus
Resolves ticket 18963; fix on #4483 in 0.2.8.1-alpha.
2016-05-11 13:30:08 -04:00
Nick Mathewson
022d32252a Merge branch 'maint-0.2.8' 2016-05-11 13:17:02 -04:00
Nick Mathewson
24fbb9a81b Merge branch 'maint-0.2.7' into maint-0.2.8 2016-05-11 13:15:17 -04:00
John Brooks
bf3e32a452 Fix out-of-bounds write during voting with duplicate ed25519 keys
In dirserv_compute_performance_thresholds, we allocate arrays based
on the length of 'routers', a list of routerinfo_t, but loop over
the nodelist. The 'routers' list may be shorter when relays were
filtered by routers_make_ed_keys_unique, leading to an out-of-bounds
write on directory authorities.

This bug was originally introduced in 26e89742, but it doesn't look
possible to trigger until routers_make_ed_keys_unique was introduced
in 13a31e72.

Fixes bug 19032; bugfix on tor 0.2.8.2-alpha.
2016-05-11 13:11:03 -04:00