[tor-bugs] #15504 [Torsocks]: torsocks's getaddrinfo() is broken.

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#15504: torsocks's getaddrinfo() is broken.
----------------------+-------------------------
 Reporter:  yawning   |          Owner:  dgoulet
     Type:  defect    |         Status:  new
 Priority:  normal    |      Milestone:
Component:  Torsocks  |        Version:
 Keywords:            |  Actual Points:
Parent ID:            |         Points:
----------------------+-------------------------
 torsocks's getaddrinfo() implementation does not respect `AI_NUMERICHOST`.

 This is wrong because it will do the resolution anyway, and things that
 expect to be able to use `getaddrinfo()` as a super `inet_pton()` break.

 The correct thing to do is to check if the string is an address and return
 `EAI_NONAME` if it's not, without doing the tor resolution.

 With this, `#15497` and `#13294` all fixed, `aria2c` actually works with
 torsocks again, as long as async dns is disabled.  Yay.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15504>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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