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get_interface_address6_list(): Bring back a return code check

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... that was removed by 31eb486c46 which first appeared in
0.2.7.3-rc.

If tor is running in a ElectroBSD (or FreeBSD) jail it can't
get any IP addresses that aren't assigned to the jail by
looking at the interfaces and (by design) the
get_interface_address6_via_udp_socket_hack() fallback doesn't
work either.

The missing return code check resulted in tor_addr_is_internal()
complaining about a "non-IP address of type 49", due to reading
uninitialised memory.

Fixes #17173.
This commit is contained in:
Fabian Keil 2015-09-28 16:57:07 +02:00 committed by Nick Mathewson
parent 216a9f7aec
commit 3ea834ce0a
1 changed files with 2 additions and 1 deletions
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3
src/common/address.c
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@ -1711,7 +1711,8 @@ MOCK_IMPL(smartlist_t *,get_interface_address6_list,(int severity,
}
/* Okay, the smart way is out. */
get_interface_address6_via_udp_socket_hack(severity,family,&addr);
if (get_interface_address6_via_udp_socket_hack(severity,family,&addr))
return smartlist_new();
if (!include_internal && tor_addr_is_internal(&addr, 0)) {
return smartlist_new();
} else {