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Avoid dereferencing NULL if a bridge fails to build an ei descriptor.

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Reported by an anonymous commenter on Trac.
This commit is contained in:
Robert Ransom 2010-11-24 07:50:29 -08:00
parent 713db8dbfa
commit de75afc556
2 changed files with 7 additions and 1 deletions
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6
changes/fix2195-fix Normal file
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@ -0,0 +1,6 @@
o Minor bugfixes:
- Do not dereference NULL if a bridge fails to build its
extra-info descriptor. Previously, we would have dereferenced
NULL. Found by an anonymous commenter on Trac. Bugfix on
0.2.2.19-alpha.

2
src/or/router.c
View File

@ -1523,7 +1523,7 @@ router_rebuild_descriptor(int force)
/* Let bridges serve their own descriptors unencrypted, so they can /* Let bridges serve their own descriptors unencrypted, so they can
* pass reachability testing. (If they want to be harder to notice, * pass reachability testing. (If they want to be harder to notice,
* they can always leave the DirPort off). */ * they can always leave the DirPort off). */
if (!options->BridgeRelay) if (ei && !options->BridgeRelay)
ei->cache_info.send_unencrypted = 1; ei->cache_info.send_unencrypted = 1;
router_get_router_hash(ri->cache_info.signed_descriptor_body, router_get_router_hash(ri->cache_info.signed_descriptor_body,