commit fd504587d56d4062bccb0d815f4fd925fb8eb33c Author: Mike Perry mikeperry-git@torproject.org Date: Wed May 9 04:00:59 2018 +0000
Bug 25903: Tests --- src/or/relay.c | 5 +- src/or/relay.h | 4 + src/test/test_relaycell.c | 239 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 244 insertions(+), 4 deletions(-)
diff --git a/src/or/relay.c b/src/or/relay.c index 05f71efea..095d48fa5 100644 --- a/src/or/relay.c +++ b/src/or/relay.c @@ -83,9 +83,6 @@ static edge_connection_t *relay_lookup_conn(circuit_t *circ, cell_t *cell, cell_direction_t cell_direction, crypt_path_t *layer_hint);
-static int connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ, - edge_connection_t *conn, - crypt_path_t *layer_hint); static void circuit_consider_sending_sendme(circuit_t *circ, crypt_path_t *layer_hint); static void circuit_resume_edge_reading(circuit_t *circ, @@ -1412,7 +1409,7 @@ connection_edge_process_relay_cell_not_open( * * Return -reason if you want to warn and tear down the circuit, else 0. */ -static int +STATIC int connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ, edge_connection_t *conn, crypt_path_t *layer_hint) diff --git a/src/or/relay.h b/src/or/relay.h index f304af684..ce0969b46 100644 --- a/src/or/relay.h +++ b/src/or/relay.h @@ -114,6 +114,10 @@ STATIC packed_cell_t *packed_cell_new(void); STATIC packed_cell_t *cell_queue_pop(cell_queue_t *queue); STATIC destroy_cell_t *destroy_cell_queue_pop(destroy_cell_queue_t *queue); STATIC int cell_queues_check_size(void); +STATIC int connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ, + edge_connection_t *conn, + crypt_path_t *layer_hint); + #endif /* defined(RELAY_PRIVATE) */
#endif /* !defined(TOR_RELAY_H) */ diff --git a/src/test/test_relaycell.c b/src/test/test_relaycell.c index eea1f5dc8..1db520273 100644 --- a/src/test/test_relaycell.c +++ b/src/test/test_relaycell.c @@ -4,9 +4,14 @@ /* Unit tests for handling different kinds of relay cell */
#define RELAY_PRIVATE +#define CIRCUITLIST_PRIVATE #include "or.h" +#include "main.h" #include "config.h" #include "connection.h" +#include "crypto.h" +#include "circuitbuild.h" +#include "circuitlist.h" #include "connection_edge.h" #include "relay.h" #include "test.h" @@ -20,6 +25,11 @@ static uint8_t srm_answer[512]; static int srm_ttl; static time_t srm_expires;
+void connection_free_minimal(connection_t*); +int connected_cell_format_payload(uint8_t *payload_out, + const tor_addr_t *addr, + uint32_t ttl); + /* Mock replacement for connection_ap_hannshake_socks_resolved() */ static void socks_resolved_mock(entry_connection_t *conn, @@ -60,6 +70,234 @@ mark_unattached_mock(entry_connection_t *conn, int endreason, (void) file; }
+/* Helper: Return a newly allocated and initialized origin circuit with + * purpose and flags. A default HS identifier is set to an ed25519 + * authentication key for introduction point. */ +static origin_circuit_t * +helper_create_origin_circuit(int purpose, int flags) +{ + origin_circuit_t *circ = NULL; + + circ = origin_circuit_init(purpose, flags); + tor_assert(circ); + circ->cpath = tor_malloc_zero(sizeof(crypt_path_t)); + circ->cpath->magic = CRYPT_PATH_MAGIC; + circ->cpath->state = CPATH_STATE_OPEN; + circ->cpath->package_window = circuit_initial_package_window(); + circ->cpath->deliver_window = CIRCWINDOW_START; + circ->cpath->prev = circ->cpath; + /* Create a default HS identifier. */ + circ->hs_ident = tor_malloc_zero(sizeof(hs_ident_circuit_t)); + + return circ; +} + +static void +mock_connection_mark_unattached_ap_(entry_connection_t *conn, int endreason, + int line, const char *file) +{ + (void) line; + (void) file; + conn->edge_.end_reason = endreason; +} + +static void +mock_mark_for_close(connection_t *conn, + int line, const char *file) +{ + (void)line; + (void)file; + + conn->marked_for_close = 1; + return; +} + +static void +mock_start_reading(connection_t *conn) +{ + (void)conn; + return; +} + +static void +test_circbw_relay(void *arg) +{ + cell_t cell; + relay_header_t rh; + tor_addr_t addr; + edge_connection_t *edgeconn; + entry_connection_t *entryconn; + origin_circuit_t *circ; + int delivered = 0; + int overhead = 0; + + (void)arg; + +#define PACK_CELL(id, cmd, body_s) do { \ + memset(&cell, 0, sizeof(cell)); \ + memset(&rh, 0, sizeof(rh)); \ + memcpy(cell.payload+RELAY_HEADER_SIZE, (body_s), sizeof((body_s))-1); \ + rh.length = sizeof((body_s))-1; \ + rh.command = (cmd); \ + rh.stream_id = (id); \ + relay_header_pack((uint8_t*)&cell.payload, &rh); \ + } while (0) +#define ASSERT_COUNTED_BW() do { \ + tt_int_op(circ->n_delivered_read_circ_bw, OP_EQ, delivered+rh.length); \ + tt_int_op(circ->n_overhead_read_circ_bw, OP_EQ, \ + overhead+RELAY_PAYLOAD_SIZE-rh.length); \ + delivered = circ->n_delivered_read_circ_bw; \ + overhead = circ->n_overhead_read_circ_bw; \ + } while (0) +#define ASSERT_UNCOUNTED_BW() do { \ + tt_int_op(circ->n_delivered_read_circ_bw, OP_EQ, delivered); \ + tt_int_op(circ->n_overhead_read_circ_bw, OP_EQ, overhead); \ + } while (0) + + MOCK(connection_mark_unattached_ap_, mock_connection_mark_unattached_ap_); + MOCK(connection_start_reading, mock_start_reading); + MOCK(connection_mark_for_close_internal_, mock_mark_for_close); + + entryconn = entry_connection_new(CONN_TYPE_AP, AF_INET); + edgeconn = ENTRY_TO_EDGE_CONN(entryconn); + edgeconn->base_.state = AP_CONN_STATE_CONNECT_WAIT; + edgeconn->deliver_window = 1000; + circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_C_GENERAL, 0); + edgeconn->cpath_layer = circ->cpath; + circ->cpath->state = CPATH_STATE_AWAITING_KEYS; + circ->cpath->deliver_window = 1000; + + /* Stream id 0: Not counted */ + PACK_CELL(0, RELAY_COMMAND_END, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Stream id 1: Counted */ + PACK_CELL(1, RELAY_COMMAND_END, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + /* Properly formatted connect cell: counted */ + PACK_CELL(1, RELAY_COMMAND_CONNECTED, "Data1234"); + tor_addr_parse(&addr, "30.40.50.60"); + rh.length = connected_cell_format_payload(cell.payload+RELAY_HEADER_SIZE, + &addr, 1024); + relay_header_pack((uint8_t*)&cell.payload, &rh); \ + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + /* Properly formatted resolved cell in correct state: counted */ + edgeconn->base_.state = AP_CONN_STATE_RESOLVE_WAIT; + entryconn->socks_request->command = SOCKS_COMMAND_RESOLVE; + edgeconn->on_circuit = TO_CIRCUIT(circ); + PACK_CELL(1, RELAY_COMMAND_RESOLVED, + "\x04\x04\x12\x00\x00\x01\x00\x00\x02\x00"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + edgeconn->base_.state = AP_CONN_STATE_OPEN; + entryconn->socks_request->has_finished = 1; + + /* Connected cell after open: not counted */ + PACK_CELL(1, RELAY_COMMAND_CONNECTED, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Resolved cell after open: not counted */ + PACK_CELL(1, RELAY_COMMAND_RESOLVED, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Drop cell: not counted */ + PACK_CELL(1, RELAY_COMMAND_DROP, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Data cell on stream 0: not counted */ + PACK_CELL(0, RELAY_COMMAND_DATA, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Data cell on open connection: counted */ + ENTRY_TO_CONN(entryconn)->marked_for_close = 0; + PACK_CELL(1, RELAY_COMMAND_DATA, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + /* Sendme on stream: not counted */ + ENTRY_TO_CONN(entryconn)->outbuf_flushlen = 0; + PACK_CELL(1, RELAY_COMMAND_SENDME, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Sendme on circuit with full window: not counted */ + PACK_CELL(0, RELAY_COMMAND_SENDME, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Sendme on circuit with non-full window: counted */ + PACK_CELL(0, RELAY_COMMAND_SENDME, "Data1234"); + circ->cpath->package_window = 900; + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + /* End cell on non-closed connection: counted */ + PACK_CELL(1, RELAY_COMMAND_END, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn, + circ->cpath); + ASSERT_COUNTED_BW(); + + /* End cell on connection that already got one: not counted */ + PACK_CELL(1, RELAY_COMMAND_END, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), NULL, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Invalid extended cell: not counted */ + PACK_CELL(1, RELAY_COMMAND_EXTENDED2, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), NULL, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Invalid extended cell: not counted */ + PACK_CELL(1, RELAY_COMMAND_EXTENDED, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), NULL, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* Invalid HS cell: not counted */ + PACK_CELL(1, RELAY_COMMAND_ESTABLISH_INTRO, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), NULL, + circ->cpath); + ASSERT_UNCOUNTED_BW(); + + /* "Valid" HS cell in expected state: counted */ + TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_C_ESTABLISH_REND; + PACK_CELL(1, RELAY_COMMAND_RENDEZVOUS_ESTABLISHED, "Data1234"); + connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), NULL, + circ->cpath); + ASSERT_COUNTED_BW(); + + done: + UNMOCK(connection_start_reading); + UNMOCK(connection_mark_unattached_ap_); + UNMOCK(connection_mark_for_close_internal_); + circuit_free_(TO_CIRCUIT(circ)); + connection_free_minimal(ENTRY_TO_CONN(entryconn)); +} + /* Tests for connection_edge_process_resolved_cell().
The point of ..process_resolved_cell() is to handle an incoming cell @@ -244,6 +482,7 @@ test_relaycell_resolved(void *arg)
struct testcase_t relaycell_tests[] = { { "resolved", test_relaycell_resolved, TT_FORK, NULL, NULL }, + { "circbw", test_circbw_relay, TT_FORK, NULL, NULL }, END_OF_TESTCASES };