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authorNick Mathewson <nickm@torproject.org>2011-09-06 20:26:20 -0400
committerNick Mathewson <nickm@torproject.org>2011-09-06 20:26:20 -0400
commit2bf0e7479bc9ec26496405ff6a1ef830cacc001b (patch)
tree90d64ba5b4d43ef937fcf55b612fc9dca5a0f96f
parente0dae64449958f4c80e6da1ee6a336a60ffc21d5 (diff)
downloadtor-2bf0e7479bc9ec26496405ff6a1ef830cacc001b.tar.gz
tor-2bf0e7479bc9ec26496405ff6a1ef830cacc001b.zip
Fix assertion in addressmap_clear_excluded_trackexithosts
Fixes bug 3923; bugfix on 0.2.2.25-alpha; bugfix from 'laruldan' on trac.
-rw-r--r--changes/bug39235
-rw-r--r--src/or/connection_edge.c10
2 files changed, 9 insertions, 6 deletions
diff --git a/changes/bug3923 b/changes/bug3923
new file mode 100644
index 0000000000..9c0e138826
--- /dev/null
+++ b/changes/bug3923
@@ -0,0 +1,5 @@
+ o Major bugfies:
+ - Avoid an assertion failure when reloading a configuration with
+ TrackExitHosts changes. Found and fixed by 'laruldan'. Fixes
+ bug 3923; bugfix on 0.2.2.25-alpha.
+
diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c
index d4d7e1c73c..8609b023d5 100644
--- a/src/or/connection_edge.c
+++ b/src/or/connection_edge.c
@@ -842,12 +842,10 @@ addressmap_clear_excluded_trackexithosts(or_options_t *options)
if (len < 6)
continue; /* malformed. */
dot = target + len - 6; /* dot now points to just before .exit */
- dot = strrchr(dot, '.'); /* dot now points to the . before .exit or NULL */
- if (!dot) {
- nodename = tor_strndup(target, len-5);
- } else {
- nodename = tor_strndup(dot+1, strlen(dot+1)-5);
- }
+ while(dot > target && *dot != '.')
+ dot--;
+ if (*dot == '.') dot++;
+ nodename = tor_strndup(dot, len-5-(dot-target));;
ri = router_get_by_nickname(nodename, 0);
tor_free(nodename);
if (!ri ||