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hs: Always check if the hs_ident is available when processing a cell

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Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2023-11-08 11:17:48 -05:00
parent e62b8bce5a
commit 83aecca561
1 changed files with 8 additions and 1 deletions
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9
src/feature/rend/rendcommon.c
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@ -40,7 +40,14 @@ rend_process_relay_cell(circuit_t *circ, const crypt_path_t *layer_hint,
int r = -2;
if (CIRCUIT_IS_ORIGIN(circ)) {
origin_circ = TO_ORIGIN_CIRCUIT(circ);
if (!layer_hint || layer_hint != origin_circ->cpath->prev) {
/* Opened onion service circuit receiving cell MUST have an hs_ident as it
* is the underlying assumption else we can't process the cell. If this is
* the case, we can't recover so close the circuit. */
if (BUG(!origin_circ->hs_ident)) {
circuit_mark_for_close(circ, END_CIRC_REASON_INTERNAL);
origin_circ = NULL;
} else if (!layer_hint || layer_hint != origin_circ->cpath->prev) {
log_fn(LOG_PROTOCOL_WARN, LD_APP,
"Relay cell (rend purpose %d) from wrong hop on origin circ",
command);