commit 10b43f4c46378c5d08aaba01ee00081c18002a44 Author: Roger Dingledine arma@torproject.org Date: Wed Oct 3 23:56:34 2012 -0400

pass the reason from the truncated cell to the controller

(rather than just always declaring that the reason is END_CIRC_REASON_OR_CONN_CLOSED)

resolves bug 7039. --- changes/bug7039 | 7 +++++++ src/or/circuitbuild.c | 4 ++-- src/or/circuitbuild.h | 3 ++- src/or/relay.c | 3 ++- 4 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/changes/bug7039 b/changes/bug7039 new file mode 100644 index 0000000..dc5111a --- /dev/null +++ b/changes/bug7039 @@ -0,0 +1,7 @@ + o Minor bugfixes: + - When a Tor client gets a "truncated" relay cell, the first byte of + its payload specifies why the circuit was truncated. We were + ignoring this 'reason' byte when tearing down the circuit, resulting + in the controller not being told why the circuit closed. Now we + pass the reason from the truncated cell to the controller. Bugfix + on 0.1.2.3-alpha; fixes bug 7039. diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c index 09eef64..be97b7c 100644 --- a/src/or/circuitbuild.c +++ b/src/or/circuitbuild.c @@ -2999,7 +2999,7 @@ circuit_finish_handshake(origin_circuit_t *circ, uint8_t reply_type, * just give up: for circ to close, and return 0. */ int -circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer) +circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer, int reason) { // crypt_path_t *victim; // connection_t *stream; @@ -3012,7 +3012,7 @@ circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer) * just give up. */ circuit_mark_for_close(TO_CIRCUIT(circ), - END_CIRC_REASON_FLAG_REMOTE|END_CIRC_REASON_OR_CONN_CLOSED); + END_CIRC_REASON_FLAG_REMOTE|reason); return 0;

#if 0 diff --git a/src/or/circuitbuild.h b/src/or/circuitbuild.h index c3905ca..8ec48be 100644 --- a/src/or/circuitbuild.h +++ b/src/or/circuitbuild.h @@ -32,7 +32,8 @@ int circuit_init_cpath_crypto(crypt_path_t *cpath, const char *key_data, int reverse); int circuit_finish_handshake(origin_circuit_t *circ, uint8_t cell_type, const uint8_t *reply); -int circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer); +int circuit_truncated(origin_circuit_t *circ, crypt_path_t *layer, + int reason); int onionskin_answer(or_circuit_t *circ, uint8_t cell_type, const char *payload, const char *keys); int circuit_all_predicted_ports_handled(time_t now, int *need_uptime, diff --git a/src/or/relay.c b/src/or/relay.c index 54f6634..4a50b71 100644 --- a/src/or/relay.c +++ b/src/or/relay.c @@ -1251,7 +1251,8 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ, "'truncated' unsupported at non-origin. Dropping."); return 0; } - circuit_truncated(TO_ORIGIN_CIRCUIT(circ), layer_hint); + circuit_truncated(TO_ORIGIN_CIRCUIT(circ), layer_hint, + get_uint8(cell->payload + RELAY_HEADER_SIZE)); return 0; case RELAY_COMMAND_CONNECTED: if (conn) {