[tor-bugs] #27367 [Core Tor/Tor]: Authorities should reject non-UTF-8 in relay descriptors

[Tor Bug Tracker & Wiki]

#27367: Authorities should reject non-UTF-8 in relay descriptors
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  (none)
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.6.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  rust-wants, prop285,                 |  Actual Points:
  034-triage-20180328, 034-removed-20180328      |
Parent ID:  #24033                               |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by teor):

 Replying to [comment:18 cyberpunks]:
 > Created a squashed version of the branch at unicode-descriptors-dirauth1
 that's rebased on top of some additions to the unit tests in #27373.

 Thanks!

 > Can this not make it into 0.3.5, it being the next LTS?

 I'm not sure.

 This code is a major change on directory authorities, and it hasn't had
 much testing at all.
 Only a few relay operators are affected, but there hasn't been any warning
 about the change.

 Also, LTS isn't used for directory authorities:
 {{{
 Some features and configurations are currently only maintained in the two
 most recent stable releases, either because they are less mature than the
 rest of Tor, because there are relatively few users who need them, or for
 some other reason:

 Running a directory authority.
 …
 }}}
 https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/CoreTorReleases

 But I think we should try to get a limited UTF-8 torrc warning into 0.3.5
 for relay ContactInfo lines:
 https://trac.torproject.org/projects/tor/ticket/27380#comment:4

 That way, 0.3.5 relays will continue to work when authorities upgrade to
 0.3.6.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27367#comment:19>
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