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Fix detach when setting circuit ID to 0 bug in circuit_set_circid_chan_helper() and add circuit_get_by_circid_channel_even_if_marked()

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This commit is contained in:
Andrea Shepard 2012-10-01 14:22:53 -07:00
parent c097fb33fc
commit b28119e6a8
2 changed files with 16 additions and 1 deletions
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14
src/or/circuitlist.c
View File

@ -135,7 +135,7 @@ circuit_set_circid_chan_helper(circuit_t *circ, int direction,
* attached), detach the circuit. ID changes require this because * attached), detach the circuit. ID changes require this because
* circuitmux hashes on (channel_id, circuit_id). * circuitmux hashes on (channel_id, circuit_id).
*/ */
if (id != 0 && (old_chan != chan || old_id != id) && if (old_id != 0 && (old_chan != chan || old_id != id) &&
!(circ->marked_for_close)) { !(circ->marked_for_close)) {
tor_assert(old_chan->cmux); tor_assert(old_chan->cmux);
circuitmux_detach_circuit(old_chan->cmux, circ); circuitmux_detach_circuit(old_chan->cmux, circ);
@ -986,6 +986,18 @@ circuit_get_by_circid_channel(circid_t circ_id, channel_t *chan)
return circ; return circ;
} }
/** Return a circ such that:
* - circ-\>n_circ_id or circ-\>p_circ_id is equal to <b>circ_id</b>, and
* - circ is attached to <b>chan</b>, either as p_chan or n_chan.
* Return NULL if no such circuit exists.
*/
circuit_t *
circuit_get_by_circid_channel_even_if_marked(circid_t circ_id,
channel_t *chan)
{
return circuit_get_by_circid_channel_impl(circ_id, chan);
}
/** Return true iff the circuit ID <b>circ_id</b> is currently used by a /** Return true iff the circuit ID <b>circ_id</b> is currently used by a
* circuit, marked or not, on <b>chan</b>. */ * circuit, marked or not, on <b>chan</b>. */
int int

3
src/or/circuitlist.h
View File

@ -30,6 +30,9 @@ origin_circuit_t *origin_circuit_new(void);
or_circuit_t *or_circuit_new(circid_t p_circ_id, channel_t *p_chan); or_circuit_t *or_circuit_new(circid_t p_circ_id, channel_t *p_chan);
circuit_t *circuit_get_by_circid_channel(circid_t circ_id, circuit_t *circuit_get_by_circid_channel(circid_t circ_id,
channel_t *chan); channel_t *chan);
circuit_t *
circuit_get_by_circid_channel_even_if_marked(circid_t circ_id,
channel_t *chan);
int circuit_id_in_use_on_channel(circid_t circ_id, channel_t *chan); int circuit_id_in_use_on_channel(circid_t circ_id, channel_t *chan);
circuit_t *circuit_get_by_edge_conn(edge_connection_t *conn); circuit_t *circuit_get_by_edge_conn(edge_connection_t *conn);
void circuit_unlink_all_from_channel(channel_t *chan, int reason); void circuit_unlink_all_from_channel(channel_t *chan, int reason);