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| author | Nick Mathewson <nickm@torproject.org> | 2014-04-18 20:30:46 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2014-04-18 20:31:42 -0400 |
| commit | 0fd0f5f7a9309fb90a6a4d8bad7d6399a45c7cc1 (patch) | |
| tree | 0e73c1a643c96e73605de7dab5e22f6d658f70d1 /src/or/circuitlist.c | |
| parent | d1be2f5cf8afc7d94f4c69081897d7ea3da71298 (diff) | |
| download | tor-0fd0f5f7a9309fb90a6a4d8bad7d6399a45c7cc1.tar tor-0fd0f5f7a9309fb90a6a4d8bad7d6399a45c7cc1.tar.gz | |
scan-build: Avoid crashing on BUG in circuit_get_by_rend_token_and_purpose
If we fail in circuit_get_by_rend_token_and_purpose because the
circuit has no rend_info, don't try to reference fiends from its
rend_info when logging an error. Bugfix on 8b9a2cb68, which is
going into Tor 0.2.5.4-alpha.
Diffstat (limited to 'src/or/circuitlist.c')
| -rw-r--r-- | src/or/circuitlist.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/or/circuitlist.c b/src/or/circuitlist.c index b71dc3c13..24cb9fc8d 100644 --- a/src/or/circuitlist.c +++ b/src/or/circuitlist.c @@ -1261,8 +1261,16 @@ circuit_get_by_rend_token_and_purpose(uint8_t purpose, int is_rend_circ, circ->base_.marked_for_close) return NULL; - if (!circ->rendinfo || - ! bool_eq(circ->rendinfo->is_rend_circ, is_rend_circ) || + if (!circ->rendinfo) { + char *t = tor_strdup(hex_str(token, REND_TOKEN_LEN)); + log_warn(LD_BUG, "Wanted a circuit with %s:%d, but lookup returned a " + "circuit with no rendinfo set.", + safe_str(t), is_rend_circ); + tor_free(t); + return NULL; + } + + if (! bool_eq(circ->rendinfo->is_rend_circ, is_rend_circ) || tor_memneq(circ->rendinfo->rend_token, token, REND_TOKEN_LEN)) { char *t = tor_strdup(hex_str(token, REND_TOKEN_LEN)); log_warn(LD_BUG, "Wanted a circuit with %s:%d, but lookup returned %s:%d", |