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-rw-r--r--src/or/circuitbuild.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c
index 92b2ee7e6a..27f198c3de 100644
--- a/src/or/circuitbuild.c
+++ b/src/or/circuitbuild.c
@@ -414,10 +414,12 @@ circuit_n_conn_done(connection_t *or_conn, int status)
}
} else {
/* pull the create cell out of circ->onionskin, and send it */
+ tor_assert(circ->onionskin);
if (circuit_deliver_create_cell(circ,CELL_CREATE,circ->onionskin) < 0) {
circuit_mark_for_close(circ);
continue;
}
+ tor_free(circ->onionskin);
}
}
}
@@ -522,7 +524,7 @@ circuit_send_next_onion_skin(circuit_t *circ)
return -1;
}
} else {
- /* We are not an OR, and we building the first hop of a circuit to
+ /* We are not an OR, and we're building the first hop of a circuit to
* a new OR: we can be speedy. */
cell_type = CELL_CREATE_FAST;
memset(payload, 0, sizeof(payload));
@@ -643,6 +645,7 @@ circuit_extend(cell_t *cell, circuit_t *circ)
info(LD_CIRC|LD_OR,"Next router (%s:%d) not connected. Connecting.",
tmpbuf, circ->n_port);
+ circ->onionskin = tor_malloc(ONIONSKIN_CHALLENGE_LEN);
memcpy(circ->onionskin, onionskin, ONIONSKIN_CHALLENGE_LEN);
circ->state = CIRCUIT_STATE_OR_WAIT;
@@ -1197,6 +1200,8 @@ choose_good_exit_server_general(routerlist_t *dir, int need_uptime,
smartlist_subtract(sl,excludedexits);
if (options->StrictExitNodes || smartlist_overlap(sl,preferredexits))
smartlist_intersect(sl,preferredexits);
+ /* XXX sometimes the above results in null, when the requested
+ * exit node is down. we should pick it anyway. */
router = routerlist_sl_choose_by_bandwidth(sl);
if (router)
break;