[tor-bugs] #28358 [Core Tor/Tor]: Nyx forces Tor error: sandbox_getaddrinfo(): Bug: (Sandbox) failed to get address

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#28358: Nyx forces Tor error: sandbox_getaddrinfo(): Bug: (Sandbox) failed to get
address
--------------------------+------------------------------------
 Reporter:  wagon         |          Owner:  (none)
     Type:  defect        |         Status:  assigned
 Priority:  Medium        |      Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.3.4.9
 Severity:  Normal        |     Resolution:
 Keywords:  sandbox       |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------
Changes (by dgoulet):

 * owner:  arma => (none)
 * keywords:   => sandbox
 * milestone:   => Tor: 0.3.4.x-final


Comment:

 Hmmm... so `router_pick_published_address(get_options(), &addr, 0)` which
 is called by `GETINFO address`  triggers the sandbox.

 Issue seems to be that `sandbox_getaddrinfo_cache_disabled = 0` and
 `sandbox_getaddrinfo_is_active = 1` which means that `tor_getaddrinfo()`
 will only query the cache and never call `getaddrinfo()`.

 Not sure here, seems the solution is either call `getaddrinfo()` when the
 sandbox is active (not entirely why we don't) or disable the getaddrinfo
 cache when looking up the address from the GETINFO command (using:
 sandbox_disable_getaddrinfo_cache()).

 I'm still confused on how this can work in normal circumstances if
 `Sandbox = 1` ONLY queries the cache?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28358#comment:1>
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