/* Copyright (c) 2013-2019, The Tor Project, Inc. */ /* See LICENSE for licensing information */ #define TOR_CHANNEL_INTERNAL_ #define CHANNEL_PRIVATE_ #include "core/or/or.h" #include "core/or/channel.h" /* For channel_note_destroy_not_pending */ #define CIRCUITLIST_PRIVATE #include "core/or/circuitlist.h" #include "core/or/circuitmux.h" #include "core/or/circuitmux_ewma.h" /* For var_cell_free */ #include "core/or/connection_or.h" #include "lib/crypt_ops/crypto_rand.h" /* For packed_cell stuff */ #define RELAY_PRIVATE #include "core/or/relay.h" /* For init/free stuff */ #include "core/or/scheduler.h" #include "feature/nodelist/networkstatus.h" #include "core/or/cell_st.h" #include "feature/nodelist/networkstatus_st.h" #include "core/or/origin_circuit_st.h" #include "feature/nodelist/routerstatus_st.h" #include "core/or/var_cell_st.h" /* Test suite stuff */ #include "test/log_test_helpers.h" #include "test/test.h" #include "test/fakechans.h" static int test_chan_accept_cells = 0; static int test_chan_fixed_cells_recved = 0; static cell_t * test_chan_last_seen_fixed_cell_ptr = NULL; static int test_chan_var_cells_recved = 0; static var_cell_t * test_chan_last_seen_var_cell_ptr = NULL; static int test_cells_written = 0; static int test_doesnt_want_writes_count = 0; static int test_dumpstats_calls = 0; static int test_has_waiting_cells_count = 0; static int test_releases_count = 0; static channel_t *dump_statistics_mock_target = NULL; static int dump_statistics_mock_matches = 0; static int test_close_called = 0; static int test_chan_should_be_canonical = 0; static int test_chan_should_match_target = 0; static int test_chan_canonical_should_be_reliable = 0; static int test_chan_listener_close_fn_called = 0; static int test_chan_listener_fn_called = 0; static const char * chan_test_describe_transport(channel_t *ch) { tt_ptr_op(ch, OP_NE, NULL); done: return "Fake channel for unit tests"; } /** * Mock for channel_dump_statistics(); if the channel matches the * target, bump a counter - otherwise ignore. */ static void chan_test_channel_dump_statistics_mock(channel_t *chan, int severity) { tt_ptr_op(chan, OP_NE, NULL); (void)severity; if (chan != NULL && chan == dump_statistics_mock_target) { ++dump_statistics_mock_matches; } done: return; } /* * Handle an incoming fixed-size cell for unit tests */ static void chan_test_cell_handler(channel_t *chan, cell_t *cell) { tt_assert(chan); tt_assert(cell); test_chan_last_seen_fixed_cell_ptr = cell; ++test_chan_fixed_cells_recved; done: return; } /* * Fake transport-specific stats call */ static void chan_test_dumpstats(channel_t *ch, int severity) { tt_ptr_op(ch, OP_NE, NULL); (void)severity; ++test_dumpstats_calls; done: return; } /* * Handle an incoming variable-size cell for unit tests */ static void chan_test_var_cell_handler(channel_t *ch, var_cell_t *var_cell) { tt_assert(ch); tt_assert(var_cell); test_chan_last_seen_var_cell_ptr = var_cell; ++test_chan_var_cells_recved; done: return; } static void chan_test_close(channel_t *ch) { tt_assert(ch); ++test_close_called; done: return; } /* * Close a channel through the error path */ static void chan_test_error(channel_t *ch) { tt_assert(ch); tt_assert(!(ch->state == CHANNEL_STATE_CLOSING || ch->state == CHANNEL_STATE_ERROR || ch->state == CHANNEL_STATE_CLOSED)); channel_close_for_error(ch); done: return; } /* * Finish closing a channel from CHANNEL_STATE_CLOSING */ static void chan_test_finish_close(channel_t *ch) { tt_assert(ch); tt_assert(ch->state == CHANNEL_STATE_CLOSING); channel_closed(ch); done: return; } static const char * chan_test_get_remote_descr(channel_t *ch, int flags) { tt_assert(ch); tt_int_op(flags & ~(GRD_FLAG_ORIGINAL | GRD_FLAG_ADDR_ONLY), OP_EQ, 0); done: return "Fake channel for unit tests; no real endpoint"; } static int chan_test_num_cells_writeable(channel_t *ch) { tt_assert(ch); done: return 32; } static int chan_test_write_packed_cell(channel_t *ch, packed_cell_t *packed_cell) { int rv = 0; tt_assert(ch); tt_assert(packed_cell); if (test_chan_accept_cells) { /* Free the cell and bump the counter */ ++test_cells_written; rv = 1; } /* else return 0, we didn't accept it */ done: return rv; } static int chan_test_write_var_cell(channel_t *ch, var_cell_t *var_cell) { int rv = 0; tt_assert(ch); tt_assert(var_cell); if (test_chan_accept_cells) { /* Free the cell and bump the counter */ var_cell_free(var_cell); ++test_cells_written; rv = 1; } /* else return 0, we didn't accept it */ done: return rv; } /** * Fill out c with a new fake cell for test suite use */ void make_fake_cell(cell_t *c) { tt_ptr_op(c, OP_NE, NULL); c->circ_id = 1; c->command = CELL_RELAY; memset(c->payload, 0, CELL_PAYLOAD_SIZE); done: return; } /** * Fill out c with a new fake var_cell for test suite use */ void make_fake_var_cell(var_cell_t *c) { tt_ptr_op(c, OP_NE, NULL); c->circ_id = 1; c->command = CELL_VERSIONS; c->payload_len = CELL_PAYLOAD_SIZE / 2; memset(c->payload, 0, c->payload_len); done: return; } /** * Set up a new fake channel for the test suite */ channel_t * new_fake_channel(void) { channel_t *chan = tor_malloc_zero(sizeof(channel_t)); channel_init(chan); chan->close = chan_test_close; chan->num_cells_writeable = chan_test_num_cells_writeable; chan->get_remote_descr = chan_test_get_remote_descr; chan->write_packed_cell = chan_test_write_packed_cell; chan->write_var_cell = chan_test_write_var_cell; chan->state = CHANNEL_STATE_OPEN; chan->cmux = circuitmux_alloc(); circuitmux_set_policy(chan->cmux, &ewma_policy); return chan; } void free_fake_channel(channel_t *chan) { if (! chan) return; if (chan->cmux) circuitmux_free(chan->cmux); tor_free(chan); } /** * Counter query for scheduler_channel_has_waiting_cells_mock() */ int get_mock_scheduler_has_waiting_cells_count(void) { return test_has_waiting_cells_count; } /** * Mock for scheduler_channel_has_waiting_cells() */ void scheduler_channel_has_waiting_cells_mock(channel_t *ch) { (void)ch; /* Increment counter */ ++test_has_waiting_cells_count; return; } static void scheduler_channel_doesnt_want_writes_mock(channel_t *ch) { (void)ch; /* Increment counter */ ++test_doesnt_want_writes_count; return; } /** * Mock for scheduler_release_channel() */ void scheduler_release_channel_mock(channel_t *ch) { (void)ch; /* Increment counter */ ++test_releases_count; return; } static int test_chan_is_canonical(channel_t *chan, int req) { tor_assert(chan); if (req && test_chan_canonical_should_be_reliable) { return 1; } if (test_chan_should_be_canonical) { return 1; } return 0; } static int test_chan_matches_target(channel_t *chan, const tor_addr_t *target) { (void) chan; (void) target; if (test_chan_should_match_target) { return 1; } return 0; } static void test_chan_listener_close(channel_listener_t *chan) { (void) chan; ++test_chan_listener_close_fn_called; return; } static void test_chan_listener_fn(channel_listener_t *listener, channel_t *chan) { (void) listener; (void) chan; ++test_chan_listener_fn_called; return; } static const char * test_chan_listener_describe_transport(channel_listener_t *chan) { (void) chan; return "Fake listener channel."; } /** * Test for channel_dumpstats() and limited test for * channel_dump_statistics() */ static void test_channel_dumpstats(void *arg) { channel_t *ch = NULL; cell_t *cell = NULL; packed_cell_t *p_cell = NULL; int old_count; (void)arg; /* Mock these for duration of the test */ MOCK(scheduler_channel_doesnt_want_writes, scheduler_channel_doesnt_want_writes_mock); MOCK(scheduler_release_channel, scheduler_release_channel_mock); /* Set up a new fake channel */ ch = new_fake_channel(); tt_assert(ch); /* Try to register it */ channel_register(ch); tt_assert(ch->registered); /* Set up mock */ dump_statistics_mock_target = ch; dump_statistics_mock_matches = 0; MOCK(channel_dump_statistics, chan_test_channel_dump_statistics_mock); /* Call channel_dumpstats() */ channel_dumpstats(LOG_DEBUG); /* Assert that we hit the mock */ tt_int_op(dump_statistics_mock_matches, OP_EQ, 1); /* Close the channel */ channel_mark_for_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED); /* Try again and hit the finished channel */ channel_dumpstats(LOG_DEBUG); tt_int_op(dump_statistics_mock_matches, OP_EQ, 2); channel_run_cleanup(); ch = NULL; /* Now we should hit nothing */ channel_dumpstats(LOG_DEBUG); tt_int_op(dump_statistics_mock_matches, OP_EQ, 2); /* Unmock */ UNMOCK(channel_dump_statistics); dump_statistics_mock_target = NULL; dump_statistics_mock_matches = 0; /* Now make another channel */ ch = new_fake_channel(); tt_assert(ch); channel_register(ch); tt_int_op(ch->registered, OP_EQ, 1); /* Lie about its age so dumpstats gets coverage for rate calculations */ ch->timestamp_created = time(NULL) - 30; tt_int_op(ch->timestamp_created, OP_GT, 0); tt_int_op(time(NULL), OP_GT, ch->timestamp_created); /* Put cells through it both ways to make the counters non-zero */ p_cell = packed_cell_new(); test_chan_accept_cells = 1; old_count = test_cells_written; channel_write_packed_cell(ch, p_cell); tt_int_op(test_cells_written, OP_EQ, old_count + 1); tt_u64_op(ch->n_bytes_xmitted, OP_GT, 0); tt_u64_op(ch->n_cells_xmitted, OP_GT, 0); /* Receive path */ channel_set_cell_handlers(ch, chan_test_cell_handler, chan_test_var_cell_handler); tt_ptr_op(channel_get_cell_handler(ch), OP_EQ, chan_test_cell_handler); tt_ptr_op(channel_get_var_cell_handler(ch), OP_EQ, chan_test_var_cell_handler); cell = tor_malloc_zero(sizeof(*cell)); old_count = test_chan_fixed_cells_recved; channel_process_cell(ch, cell); tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count + 1); tt_u64_op(ch->n_bytes_recved, OP_GT, 0); tt_u64_op(ch->n_cells_recved, OP_GT, 0); /* Test channel_dump_statistics */ ch->describe_transport = chan_test_describe_transport; ch->dumpstats = chan_test_dumpstats; test_chan_should_be_canonical = 1; ch->is_canonical = test_chan_is_canonical; old_count = test_dumpstats_calls; channel_dump_statistics(ch, LOG_DEBUG); tt_int_op(test_dumpstats_calls, OP_EQ, old_count + 1); /* Close the channel */ channel_mark_for_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED); channel_run_cleanup(); ch = NULL; done: free_fake_channel(ch); tor_free(cell); UNMOCK(scheduler_channel_doesnt_want_writes); UNMOCK(scheduler_release_channel); return; } /* Test outbound cell. The callstack is: * channel_flush_some_cells() * -> channel_flush_from_first_active_circuit() * -> channel_write_packed_cell() * -> write_packed_cell() * -> chan->write_packed_cell() fct ptr. * * This test goes from a cell in a circuit up to the channel write handler * that should put them on the connection outbuf. */ static void test_channel_outbound_cell(void *arg) { int old_count; channel_t *chan = NULL; packed_cell_t *p_cell = NULL, *p_cell2 = NULL; origin_circuit_t *circ = NULL; cell_queue_t *queue; (void) arg; /* Set the test time to be mocked, since this test assumes that no * time will pass, ewma values will not need to be re-scaled, and so on */ monotime_enable_test_mocking(); monotime_set_mock_time_nsec(UINT64_C(1000000000) * 12345); cmux_ewma_set_options(NULL,NULL); /* The channel will be freed so we need to hijack this so the scheduler * doesn't get confused. */ MOCK(scheduler_release_channel, scheduler_release_channel_mock); /* Accept cells to lower layer */ test_chan_accept_cells = 1; /* Setup a valid circuit to queue a cell. */ circ = origin_circuit_new(); tt_assert(circ); /* Circuit needs an origin purpose to be considered origin. */ TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_C_GENERAL; TO_CIRCUIT(circ)->n_circ_id = 42; /* This is the outbound test so use the next channel queue. */ queue = &TO_CIRCUIT(circ)->n_chan_cells; /* Setup packed cell to queue on the circuit. */ p_cell = packed_cell_new(); tt_assert(p_cell); p_cell2 = packed_cell_new(); tt_assert(p_cell2); /* Setup a channel to put the circuit on. */ chan = new_fake_channel(); tt_assert(chan); chan->state = CHANNEL_STATE_OPENING; channel_change_state_open(chan); /* Outbound channel. */ channel_mark_outgoing(chan); /* Try to register it so we can clean it through the channel cleanup * process. */ channel_register(chan); tt_int_op(chan->registered, OP_EQ, 1); /* Set EWMA policy so we can pick it when flushing. */ circuitmux_set_policy(chan->cmux, &ewma_policy); tt_ptr_op(circuitmux_get_policy(chan->cmux), OP_EQ, &ewma_policy); /* Register circuit to the channel circid map which will attach the circuit * to the channel's cmux as well. */ circuit_set_n_circid_chan(TO_CIRCUIT(circ), 42, chan); tt_int_op(channel_num_circuits(chan), OP_EQ, 1); /* Test the cmux state. */ tt_int_op(circuitmux_is_circuit_attached(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 1); /* Flush the channel without any cell on it. */ old_count = test_cells_written; ssize_t flushed = channel_flush_some_cells(chan, 1); tt_i64_op(flushed, OP_EQ, 0); tt_int_op(test_cells_written, OP_EQ, old_count); tt_int_op(channel_more_to_flush(chan), OP_EQ, 0); tt_int_op(circuitmux_num_active_circuits(chan->cmux), OP_EQ, 0); tt_int_op(circuitmux_num_cells(chan->cmux), OP_EQ, 0); tt_int_op(circuitmux_is_circuit_active(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 0); tt_u64_op(chan->n_cells_xmitted, OP_EQ, 0); tt_u64_op(chan->n_bytes_xmitted, OP_EQ, 0); /* Queue cell onto the next queue that is the outbound direction. Than * update its cmux so the circuit can be picked when flushing cells. */ cell_queue_append(queue, p_cell); p_cell = NULL; tt_int_op(queue->n, OP_EQ, 1); cell_queue_append(queue, p_cell2); p_cell2 = NULL; tt_int_op(queue->n, OP_EQ, 2); update_circuit_on_cmux(TO_CIRCUIT(circ), CELL_DIRECTION_OUT); tt_int_op(circuitmux_num_active_circuits(chan->cmux), OP_EQ, 1); tt_int_op(circuitmux_num_cells(chan->cmux), OP_EQ, 2); tt_int_op(circuitmux_is_circuit_active(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 1); /* From this point on, we have a queued cell on an active circuit attached * to the channel's cmux. */ /* Flush the first cell. This is going to go down the call stack. */ old_count = test_cells_written; flushed = channel_flush_some_cells(chan, 1); tt_i64_op(flushed, OP_EQ, 1); tt_int_op(test_cells_written, OP_EQ, old_count + 1); tt_int_op(circuitmux_num_cells(chan->cmux), OP_EQ, 1); tt_int_op(channel_more_to_flush(chan), OP_EQ, 1); /* Circuit should remain active because there is a second cell queued. */ tt_int_op(circuitmux_is_circuit_active(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 1); /* Should still be attached. */ tt_int_op(circuitmux_is_circuit_attached(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 1); tt_u64_op(chan->n_cells_xmitted, OP_EQ, 1); tt_u64_op(chan->n_bytes_xmitted, OP_EQ, get_cell_network_size(0)); /* Flush second cell. This is going to go down the call stack. */ old_count = test_cells_written; flushed = channel_flush_some_cells(chan, 1); tt_i64_op(flushed, OP_EQ, 1); tt_int_op(test_cells_written, OP_EQ, old_count + 1); tt_int_op(circuitmux_num_cells(chan->cmux), OP_EQ, 0); tt_int_op(channel_more_to_flush(chan), OP_EQ, 0); /* No more cells should make the circuit inactive. */ tt_int_op(circuitmux_is_circuit_active(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 0); /* Should still be attached. */ tt_int_op(circuitmux_is_circuit_attached(chan->cmux, TO_CIRCUIT(circ)), OP_EQ, 1); tt_u64_op(chan->n_cells_xmitted, OP_EQ, 2); tt_u64_op(chan->n_bytes_xmitted, OP_EQ, get_cell_network_size(0) * 2); done: if (circ) { circuit_free_(TO_CIRCUIT(circ)); } tor_free(p_cell); channel_free_all(); UNMOCK(scheduler_release_channel); monotime_disable_test_mocking(); } /* Test inbound cell. The callstack is: * channel_process_cell() * -> chan->cell_handler() * * This test is about checking if we can process an inbound cell down to the * channel handler. */ static void test_channel_inbound_cell(void *arg) { channel_t *chan = NULL; cell_t *cell = NULL; int old_count; (void) arg; /* The channel will be freed so we need to hijack this so the scheduler * doesn't get confused. */ MOCK(scheduler_release_channel, scheduler_release_channel_mock); /* Accept cells to lower layer */ test_chan_accept_cells = 1; chan = new_fake_channel(); tt_assert(chan); /* Start it off in OPENING */ chan->state = CHANNEL_STATE_OPENING; /* Try to register it */ channel_register(chan); tt_int_op(chan->registered, OP_EQ, 1); /* Open it */ channel_change_state_open(chan); tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_OPEN); tt_int_op(chan->has_been_open, OP_EQ, 1); /* Receive a cell now. */ cell = tor_malloc_zero(sizeof(*cell)); make_fake_cell(cell); old_count = test_chan_fixed_cells_recved; channel_process_cell(chan, cell); tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count); tt_assert(monotime_coarse_is_zero(&chan->timestamp_xfer)); tt_u64_op(chan->timestamp_active, OP_EQ, 0); tt_u64_op(chan->timestamp_recv, OP_EQ, 0); /* Setup incoming cell handlers. We don't care about var cell, the channel * layers is not handling those. */ channel_set_cell_handlers(chan, chan_test_cell_handler, NULL); tt_ptr_op(chan->cell_handler, OP_EQ, chan_test_cell_handler); /* Now process the cell, we should see it. */ old_count = test_chan_fixed_cells_recved; channel_process_cell(chan, cell); tt_int_op(test_chan_fixed_cells_recved, OP_EQ, old_count + 1); /* We should have a series of timestamp set. */ tt_assert(!monotime_coarse_is_zero(&chan->timestamp_xfer)); tt_u64_op(chan->timestamp_active, OP_NE, 0); tt_u64_op(chan->timestamp_recv, OP_NE, 0); tt_assert(monotime_coarse_is_zero(&chan->next_padding_time)); tt_u64_op(chan->n_cells_recved, OP_EQ, 1); tt_u64_op(chan->n_bytes_recved, OP_EQ, get_cell_network_size(0)); /* Close it */ old_count = test_close_called; channel_mark_for_close(chan); tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_CLOSING); tt_int_op(chan->reason_for_closing, OP_EQ, CHANNEL_CLOSE_REQUESTED); tt_int_op(test_close_called, OP_EQ, old_count + 1); /* This closes the channe so it calls in the scheduler, make sure of it. */ old_count = test_releases_count; chan_test_finish_close(chan); tt_int_op(test_releases_count, OP_EQ, old_count + 1); tt_int_op(chan->state, OP_EQ, CHANNEL_STATE_CLOSED); /* The channel will be free, lets make sure it is not accessible. */ uint64_t chan_id = chan->global_identifier; tt_ptr_op(channel_find_by_global_id(chan_id), OP_EQ, chan); channel_run_cleanup(); chan = channel_find_by_global_id(chan_id); tt_assert(chan == NULL); done: tor_free(cell); UNMOCK(scheduler_release_channel); } /** * Normal channel lifecycle test: * * OPENING->OPEN->MAINT->OPEN->CLOSING->CLOSED */ static void test_channel_lifecycle(void *arg) { channel_t *ch1 = NULL, *ch2 = NULL; packed_cell_t *p_cell = NULL; int old_count, init_doesnt_want_writes_count; int init_releases_count; (void)arg; /* Mock these for the whole lifecycle test */ MOCK(scheduler_channel_doesnt_want_writes, scheduler_channel_doesnt_want_writes_mock); MOCK(scheduler_release_channel, scheduler_release_channel_mock); /* Cache some initial counter values */ init_doesnt_want_writes_count = test_doesnt_want_writes_count; init_releases_count = test_releases_count; /* Accept cells to lower layer */ test_chan_accept_cells = 1; ch1 = new_fake_channel(); tt_assert(ch1); /* Start it off in OPENING */ ch1->state = CHANNEL_STATE_OPENING; /* Try to register it */ channel_register(ch1); tt_assert(ch1->registered); /* Try to write a cell through (should queue) */ p_cell = packed_cell_new(); old_count = test_cells_written; channel_write_packed_cell(ch1, p_cell); tt_int_op(old_count, OP_EQ, test_cells_written); /* Move it to OPEN and flush */ channel_change_state_open(ch1); /* Get another one */ ch2 = new_fake_channel(); tt_assert(ch2); ch2->state = CHANNEL_STATE_OPENING; /* Register */ channel_register(ch2); tt_assert(ch2->registered); /* Check counters */ tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count); tt_int_op(test_releases_count, OP_EQ, init_releases_count); /* Move ch1 to MAINT */ channel_change_state(ch1, CHANNEL_STATE_MAINT); tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count + 1); tt_int_op(test_releases_count, OP_EQ, init_releases_count); /* Move ch2 to OPEN */ channel_change_state_open(ch2); tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count + 1); tt_int_op(test_releases_count, OP_EQ, init_releases_count); /* Move ch1 back to OPEN */ channel_change_state_open(ch1); tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count + 1); tt_int_op(test_releases_count, OP_EQ, init_releases_count); /* Mark ch2 for close */ channel_mark_for_close(ch2); tt_int_op(ch2->state, OP_EQ, CHANNEL_STATE_CLOSING); tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count + 1); tt_int_op(test_releases_count, OP_EQ, init_releases_count + 1); /* Shut down channels */ channel_free_all(); ch1 = ch2 = NULL; tt_int_op(test_doesnt_want_writes_count, OP_EQ, init_doesnt_want_writes_count + 1); /* channel_free() calls scheduler_release_channel() */ tt_int_op(test_releases_count, OP_EQ, init_releases_count + 4); done: free_fake_channel(ch1); free_fake_channel(ch2); UNMOCK(scheduler_channel_doesnt_want_writes); UNMOCK(scheduler_release_channel); } /** * Weird channel lifecycle test: * * OPENING->CLOSING->CLOSED * OPENING->OPEN->CLOSING->ERROR * OPENING->OPEN->MAINT->CLOSING->CLOSED * OPENING->OPEN->MAINT->CLOSING->ERROR */ static void test_channel_lifecycle_2(void *arg) { channel_t *ch = NULL; (void)arg; /* Mock these for the whole lifecycle test */ MOCK(scheduler_channel_doesnt_want_writes, scheduler_channel_doesnt_want_writes_mock); MOCK(scheduler_release_channel, scheduler_release_channel_mock); /* Accept cells to lower layer */ test_chan_accept_cells = 1; ch = new_fake_channel(); tt_assert(ch); /* Start it off in OPENING */ ch->state = CHANNEL_STATE_OPENING; /* Try to register it */ channel_register(ch); tt_assert(ch->registered); /* Try to close it */ channel_mark_for_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); /* Finish closing it */ chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED); channel_run_cleanup(); ch = NULL; /* Now try OPENING->OPEN->CLOSING->ERROR */ ch = new_fake_channel(); tt_assert(ch); ch->state = CHANNEL_STATE_OPENING; channel_register(ch); tt_assert(ch->registered); /* Finish opening it */ channel_change_state_open(ch); /* Error exit from lower layer */ chan_test_error(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_ERROR); channel_run_cleanup(); ch = NULL; /* OPENING->OPEN->MAINT->CLOSING->CLOSED close from maintenance state */ ch = new_fake_channel(); tt_assert(ch); ch->state = CHANNEL_STATE_OPENING; channel_register(ch); tt_assert(ch->registered); /* Finish opening it */ channel_change_state_open(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_OPEN); /* Go to maintenance state */ channel_change_state(ch, CHANNEL_STATE_MAINT); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_MAINT); /* Lower layer close */ channel_mark_for_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); /* Finish */ chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED); channel_run_cleanup(); ch = NULL; /* * OPENING->OPEN->MAINT->CLOSING->CLOSED lower-layer close during * maintenance state */ ch = new_fake_channel(); tt_assert(ch); ch->state = CHANNEL_STATE_OPENING; channel_register(ch); tt_assert(ch->registered); /* Finish opening it */ channel_change_state_open(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_OPEN); /* Go to maintenance state */ channel_change_state(ch, CHANNEL_STATE_MAINT); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_MAINT); /* Lower layer close */ channel_close_from_lower_layer(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); /* Finish */ chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSED); channel_run_cleanup(); ch = NULL; /* OPENING->OPEN->MAINT->CLOSING->ERROR */ ch = new_fake_channel(); tt_assert(ch); ch->state = CHANNEL_STATE_OPENING; channel_register(ch); tt_assert(ch->registered); /* Finish opening it */ channel_change_state_open(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_OPEN); /* Go to maintenance state */ channel_change_state(ch, CHANNEL_STATE_MAINT); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_MAINT); /* Lower layer close */ chan_test_error(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_CLOSING); /* Finish */ chan_test_finish_close(ch); tt_int_op(ch->state, OP_EQ, CHANNEL_STATE_ERROR); channel_run_cleanup(); ch = NULL; /* Shut down channels */ channel_free_all(); done: tor_free(ch); UNMOCK(scheduler_channel_doesnt_want_writes); UNMOCK(scheduler_release_channel); return; } static void test_channel_id_map(void *arg) { (void)arg; #define N_CHAN 6 char rsa_id[N_CHAN][DIGEST_LEN]; ed25519_public_key_t *ed_id[N_CHAN]; channel_t *chan[N_CHAN]; int i; ed25519_public_key_t ed_zero; memset(&ed_zero, 0, sizeof(ed_zero)); tt_int_op(DIGEST_LEN, OP_EQ, sizeof(rsa_id[0])); // Do I remember C? for (i = 0; i < N_CHAN; ++i) { crypto_rand(rsa_id[i], DIGEST_LEN); ed_id[i] = tor_malloc_zero(sizeof(*ed_id[i])); crypto_rand((char*)ed_id[i]->pubkey, sizeof(ed_id[i]->pubkey)); } /* For channel 3, have no Ed identity. */ tor_free(ed_id[3]); /* Channel 2 and 4 have same ROSA identity */ memcpy(rsa_id[4], rsa_id[2], DIGEST_LEN); /* Channel 2 and 4 and 5 have same RSA identity */ memcpy(rsa_id[4], rsa_id[2], DIGEST_LEN); memcpy(rsa_id[5], rsa_id[2], DIGEST_LEN); /* Channels 2 and 5 have same Ed25519 identity */ memcpy(ed_id[5], ed_id[2], sizeof(*ed_id[2])); for (i = 0; i < N_CHAN; ++i) { chan[i] = new_fake_channel(); channel_register(chan[i]); channel_set_identity_digest(chan[i], rsa_id[i], ed_id[i]); } /* Lookup by RSA id only */ tt_ptr_op(chan[0], OP_EQ, channel_find_by_remote_identity(rsa_id[0], NULL)); tt_ptr_op(chan[1], OP_EQ, channel_find_by_remote_identity(rsa_id[1], NULL)); tt_ptr_op(chan[3], OP_EQ, channel_find_by_remote_identity(rsa_id[3], NULL)); channel_t *ch; ch = channel_find_by_remote_identity(rsa_id[2], NULL); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_ptr_op(ch, OP_EQ, NULL); /* As above, but with zero Ed25519 ID (meaning "any ID") */ tt_ptr_op(chan[0], OP_EQ, channel_find_by_remote_identity(rsa_id[0], &ed_zero)); tt_ptr_op(chan[1], OP_EQ, channel_find_by_remote_identity(rsa_id[1], &ed_zero)); tt_ptr_op(chan[3], OP_EQ, channel_find_by_remote_identity(rsa_id[3], &ed_zero)); ch = channel_find_by_remote_identity(rsa_id[2], &ed_zero); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_assert(ch == chan[2] || ch == chan[4] || ch == chan[5]); ch = channel_next_with_rsa_identity(ch); tt_ptr_op(ch, OP_EQ, NULL); /* Lookup nonexistent RSA identity */ tt_ptr_op(NULL, OP_EQ, channel_find_by_remote_identity("!!!!!!!!!!!!!!!!!!!!", NULL)); /* Look up by full identity pair */ tt_ptr_op(chan[0], OP_EQ, channel_find_by_remote_identity(rsa_id[0], ed_id[0])); tt_ptr_op(chan[1], OP_EQ, channel_find_by_remote_identity(rsa_id[1], ed_id[1])); tt_ptr_op(chan[3], OP_EQ, channel_find_by_remote_identity(rsa_id[3], ed_id[3] /*NULL*/)); tt_ptr_op(chan[4], OP_EQ, channel_find_by_remote_identity(rsa_id[4], ed_id[4])); ch = channel_find_by_remote_identity(rsa_id[2], ed_id[2]); tt_assert(ch == chan[2] || ch == chan[5]); /* Look up RSA identity with wrong ed25519 identity */ tt_ptr_op(NULL, OP_EQ, channel_find_by_remote_identity(rsa_id[4], ed_id[0])); tt_ptr_op(NULL, OP_EQ, channel_find_by_remote_identity(rsa_id[2], ed_id[1])); tt_ptr_op(NULL, OP_EQ, channel_find_by_remote_identity(rsa_id[3], ed_id[1])); done: for (i = 0; i < N_CHAN; ++i) { channel_clear_identity_digest(chan[i]); channel_unregister(chan[i]); free_fake_channel(chan[i]); tor_free(ed_id[i]); } #undef N_CHAN } static void test_channel_state(void *arg) { (void) arg; /* Test state validity. */ tt_int_op(channel_state_is_valid(CHANNEL_STATE_CLOSED), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_OPEN), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_OPENING), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_MAINT), OP_EQ, 1); tt_int_op(channel_state_is_valid(CHANNEL_STATE_LAST), OP_EQ, 0); tt_int_op(channel_state_is_valid(INT_MAX), OP_EQ, 0); /* Test listener state validity. */ tt_int_op(channel_listener_state_is_valid(CHANNEL_LISTENER_STATE_CLOSED), OP_EQ, 1); tt_int_op(channel_listener_state_is_valid(CHANNEL_LISTENER_STATE_LISTENING), OP_EQ, 1); tt_int_op(channel_listener_state_is_valid(CHANNEL_LISTENER_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_listener_state_is_valid(CHANNEL_LISTENER_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_listener_state_is_valid(CHANNEL_LISTENER_STATE_LAST), OP_EQ, 0); tt_int_op(channel_listener_state_is_valid(INT_MAX), OP_EQ, 0); /* Test state transition. */ tt_int_op(channel_state_can_transition(CHANNEL_STATE_CLOSED, CHANNEL_STATE_OPENING), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_CLOSED, CHANNEL_STATE_ERROR), OP_EQ, 0); tt_int_op(channel_state_can_transition(CHANNEL_STATE_CLOSING, CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_CLOSING, CHANNEL_STATE_CLOSED), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_CLOSING, CHANNEL_STATE_OPEN), OP_EQ, 0); tt_int_op(channel_state_can_transition(CHANNEL_STATE_MAINT, CHANNEL_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_MAINT, CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_MAINT, CHANNEL_STATE_OPEN), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_MAINT, CHANNEL_STATE_OPENING), OP_EQ, 0); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPENING, CHANNEL_STATE_OPEN), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPENING, CHANNEL_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPENING, CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPEN, CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPEN, CHANNEL_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPEN, CHANNEL_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_OPEN, CHANNEL_STATE_MAINT), OP_EQ, 1); tt_int_op(channel_state_can_transition(CHANNEL_STATE_LAST, CHANNEL_STATE_MAINT), OP_EQ, 0); tt_int_op(channel_state_can_transition(CHANNEL_STATE_LAST, INT_MAX), OP_EQ, 0); /* Test listener state transition. */ tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_CLOSED, CHANNEL_LISTENER_STATE_LISTENING), OP_EQ, 1); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_CLOSED, CHANNEL_LISTENER_STATE_ERROR), OP_EQ, 0); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_CLOSING, CHANNEL_LISTENER_STATE_CLOSED), OP_EQ, 1); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_CLOSING, CHANNEL_LISTENER_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_ERROR, CHANNEL_LISTENER_STATE_CLOSING), OP_EQ, 0); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_LISTENING, CHANNEL_LISTENER_STATE_CLOSING), OP_EQ, 1); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_LISTENING, CHANNEL_LISTENER_STATE_ERROR), OP_EQ, 1); tt_int_op(channel_listener_state_can_transition( CHANNEL_LISTENER_STATE_LAST, INT_MAX), OP_EQ, 0); /* Test state string. */ tt_str_op(channel_state_to_string(CHANNEL_STATE_CLOSING), OP_EQ, "closing"); tt_str_op(channel_state_to_string(CHANNEL_STATE_ERROR), OP_EQ, "channel error"); tt_str_op(channel_state_to_string(CHANNEL_STATE_CLOSED), OP_EQ, "closed"); tt_str_op(channel_state_to_string(CHANNEL_STATE_OPEN), OP_EQ, "open"); tt_str_op(channel_state_to_string(CHANNEL_STATE_OPENING), OP_EQ, "opening"); tt_str_op(channel_state_to_string(CHANNEL_STATE_MAINT), OP_EQ, "temporarily suspended for maintenance"); tt_str_op(channel_state_to_string(CHANNEL_STATE_LAST), OP_EQ, "unknown or invalid channel state"); tt_str_op(channel_state_to_string(INT_MAX), OP_EQ, "unknown or invalid channel state"); /* Test listener state string. */ tt_str_op(channel_listener_state_to_string(CHANNEL_LISTENER_STATE_CLOSING), OP_EQ, "closing"); tt_str_op(channel_listener_state_to_string(CHANNEL_LISTENER_STATE_ERROR), OP_EQ, "channel listener error"); tt_str_op(channel_listener_state_to_string(CHANNEL_LISTENER_STATE_LISTENING), OP_EQ, "listening"); tt_str_op(channel_listener_state_to_string(CHANNEL_LISTENER_STATE_LAST), OP_EQ, "unknown or invalid channel listener state"); tt_str_op(channel_listener_state_to_string(INT_MAX), OP_EQ, "unknown or invalid channel listener state"); done: ; } static networkstatus_t *mock_ns = NULL; static networkstatus_t * mock_networkstatus_get_latest_consensus(void) { return mock_ns; } static void test_channel_duplicates(void *arg) { channel_t *chan = NULL; routerstatus_t rs; (void) arg; setup_full_capture_of_logs(LOG_INFO); /* Try a flat call with channel nor connections. */ channel_check_for_duplicates(); expect_log_msg_containing( "Found 0 connections to 0 relays. Found 0 current canonical " "connections, in 0 of which we were a non-canonical peer. " "0 relays had more than 1 connection, 0 had more than 2, and " "0 had more than 4 connections."); mock_ns = tor_malloc_zero(sizeof(*mock_ns)); mock_ns->routerstatus_list = smartlist_new(); MOCK(networkstatus_get_latest_consensus, mock_networkstatus_get_latest_consensus); chan = new_fake_channel(); tt_assert(chan); chan->is_canonical = test_chan_is_canonical; memset(chan->identity_digest, 'A', sizeof(chan->identity_digest)); channel_add_to_digest_map(chan); tt_ptr_op(channel_find_by_remote_identity(chan->identity_digest, NULL), OP_EQ, chan); /* No relay has been associated with this channel. */ channel_check_for_duplicates(); expect_log_msg_containing( "Found 0 connections to 0 relays. Found 0 current canonical " "connections, in 0 of which we were a non-canonical peer. " "0 relays had more than 1 connection, 0 had more than 2, and " "0 had more than 4 connections."); /* Associate relay to this connection in the consensus. */ memset(&rs, 0, sizeof(rs)); memset(rs.identity_digest, 'A', sizeof(rs.identity_digest)); smartlist_add(mock_ns->routerstatus_list, &rs); /* Non opened channel. */ chan->state = CHANNEL_STATE_CLOSING; channel_check_for_duplicates(); expect_log_msg_containing( "Found 0 connections to 0 relays. Found 0 current canonical " "connections, in 0 of which we were a non-canonical peer. " "0 relays had more than 1 connection, 0 had more than 2, and " "0 had more than 4 connections."); chan->state = CHANNEL_STATE_OPEN; channel_check_for_duplicates(); expect_log_msg_containing( "Found 1 connections to 1 relays. Found 0 current canonical " "connections, in 0 of which we were a non-canonical peer. " "0 relays had more than 1 connection, 0 had more than 2, and " "0 had more than 4 connections."); test_chan_should_be_canonical = 1; channel_check_for_duplicates(); expect_log_msg_containing( "Found 1 connections to 1 relays. Found 1 current canonical " "connections, in 1 of which we were a non-canonical peer. " "0 relays had more than 1 connection, 0 had more than 2, and " "0 had more than 4 connections."); teardown_capture_of_logs(); done: free_fake_channel(chan); smartlist_clear(mock_ns->routerstatus_list); networkstatus_vote_free(mock_ns); UNMOCK(networkstatus_get_latest_consensus); } static void test_channel_for_extend(void *arg) { channel_t *chan1 = NULL, *chan2 = NULL; channel_t *ret_chan = NULL; char digest[DIGEST_LEN]; ed25519_public_key_t ed_id; tor_addr_t addr; const char *msg; int launch; time_t now = time(NULL); (void) arg; memset(digest, 'A', sizeof(digest)); memset(&ed_id, 'B', sizeof(ed_id)); chan1 = new_fake_channel(); tt_assert(chan1); /* Need to be registered to get added to the id map. */ channel_register(chan1); tt_int_op(chan1->registered, OP_EQ, 1); /* We need those for the test. */ chan1->is_canonical = test_chan_is_canonical; chan1->matches_target = test_chan_matches_target; chan1->timestamp_created = now - 9; chan2 = new_fake_channel(); tt_assert(chan2); /* Need to be registered to get added to the id map. */ channel_register(chan2); tt_int_op(chan2->registered, OP_EQ, 1); /* We need those for the test. */ chan2->is_canonical = test_chan_is_canonical; chan2->matches_target = test_chan_matches_target; /* Make it older than chan1. */ chan2->timestamp_created = chan1->timestamp_created - 1; /* Set channel identities and add it to the channel map. The last one to be * added is made the first one in the list so the lookup will always return * that one first. */ channel_set_identity_digest(chan2, digest, &ed_id); channel_set_identity_digest(chan1, digest, &ed_id); tt_ptr_op(channel_find_by_remote_identity(digest, NULL), OP_EQ, chan1); tt_ptr_op(channel_find_by_remote_identity(digest, &ed_id), OP_EQ, chan1); /* The expected result is chan2 because it is older than chan1. */ ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan2); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); /* Switch that around from previous test. */ chan2->timestamp_created = chan1->timestamp_created + 1; ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan1); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); /* Same creation time, num circuits will be used and they both have 0 so the * channel 2 should be picked due to how channel_is_better() work. */ chan2->timestamp_created = chan1->timestamp_created; ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan1); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); /* For the rest of the tests, we need channel 1 to be the older. */ chan2->timestamp_created = chan1->timestamp_created + 1; /* Condemned the older channel. */ chan1->state = CHANNEL_STATE_CLOSING; ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan2); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); chan1->state = CHANNEL_STATE_OPEN; /* Make the older channel a client one. */ channel_mark_client(chan1); ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan2); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); channel_clear_client(chan1); /* Non matching ed identity with valid digest. */ ed25519_public_key_t dumb_ed_id; memset(&dumb_ed_id, 0, sizeof(dumb_ed_id)); ret_chan = channel_get_for_extend(digest, &dumb_ed_id, &addr, &msg, &launch); tt_assert(!ret_chan); tt_str_op(msg, OP_EQ, "Not connected. Connecting."); tt_int_op(launch, OP_EQ, 1); /* Opening channel, we'll check if the target address matches. */ test_chan_should_match_target = 1; chan1->state = CHANNEL_STATE_OPENING; chan2->state = CHANNEL_STATE_OPENING; ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(!ret_chan); tt_str_op(msg, OP_EQ, "Connection in progress; waiting."); tt_int_op(launch, OP_EQ, 0); chan1->state = CHANNEL_STATE_OPEN; chan2->state = CHANNEL_STATE_OPEN; /* Mark channel 1 as bad for circuits. */ channel_mark_bad_for_new_circs(chan1); ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(ret_chan); tt_ptr_op(ret_chan, OP_EQ, chan2); tt_int_op(launch, OP_EQ, 0); tt_str_op(msg, OP_EQ, "Connection is fine; using it."); chan1->is_bad_for_new_circs = 0; /* Mark both channels as unusable. */ channel_mark_bad_for_new_circs(chan1); channel_mark_bad_for_new_circs(chan2); ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(!ret_chan); tt_str_op(msg, OP_EQ, "Connections all too old, or too non-canonical. " " Launching a new one."); tt_int_op(launch, OP_EQ, 1); chan1->is_bad_for_new_circs = 0; chan2->is_bad_for_new_circs = 0; /* Non canonical channels. */ test_chan_should_match_target = 0; test_chan_canonical_should_be_reliable = 1; ret_chan = channel_get_for_extend(digest, &ed_id, &addr, &msg, &launch); tt_assert(!ret_chan); tt_str_op(msg, OP_EQ, "Connections all too old, or too non-canonical. " " Launching a new one."); tt_int_op(launch, OP_EQ, 1); done: free_fake_channel(chan1); free_fake_channel(chan2); } static void test_channel_listener(void *arg) { int old_count; time_t now = time(NULL); channel_listener_t *chan = NULL; (void) arg; chan = tor_malloc_zero(sizeof(*chan)); tt_assert(chan); channel_init_listener(chan); tt_u64_op(chan->global_identifier, OP_EQ, 1); tt_int_op(chan->timestamp_created, OP_GE, now); chan->close = test_chan_listener_close; /* Register it. At this point, it is not open so it will be put in the * finished list. */ channel_listener_register(chan); tt_int_op(chan->registered, OP_EQ, 1); channel_listener_unregister(chan); /* Register it as listening now thus active. */ chan->state = CHANNEL_LISTENER_STATE_LISTENING; channel_listener_register(chan); tt_int_op(chan->registered, OP_EQ, 1); /* Set the listener function. */ channel_listener_set_listener_fn(chan, test_chan_listener_fn); tt_ptr_op(chan->listener, OP_EQ, test_chan_listener_fn); /* Put a channel in the listener incoming list and queue it. * function. By doing this, the listener() handler will be called. */ channel_t *in_chan = new_fake_channel(); old_count = test_chan_listener_fn_called; channel_listener_queue_incoming(chan, in_chan); free_fake_channel(in_chan); tt_int_op(test_chan_listener_fn_called, OP_EQ, old_count + 1); /* Put listener channel in CLOSING state. */ old_count = test_chan_listener_close_fn_called; channel_listener_mark_for_close(chan); tt_int_op(test_chan_listener_close_fn_called, OP_EQ, old_count + 1); channel_listener_change_state(chan, CHANNEL_LISTENER_STATE_CLOSED); /* Dump stats so we at least hit the code path. */ chan->describe_transport = test_chan_listener_describe_transport; /* There is a check for "now > timestamp_created" when dumping the stats so * make sure we go in. */ chan->timestamp_created = now - 10; channel_listener_dump_statistics(chan, LOG_INFO); done: channel_free_all(); } struct testcase_t channel_tests[] = { { "inbound_cell", test_channel_inbound_cell, TT_FORK, NULL, NULL }, { "outbound_cell", test_channel_outbound_cell, TT_FORK, NULL, NULL }, { "id_map", test_channel_id_map, TT_FORK, NULL, NULL }, { "lifecycle", test_channel_lifecycle, TT_FORK, NULL, NULL }, { "lifecycle_2", test_channel_lifecycle_2, TT_FORK, NULL, NULL }, { "dumpstats", test_channel_dumpstats, TT_FORK, NULL, NULL }, { "state", test_channel_state, TT_FORK, NULL, NULL }, { "duplicates", test_channel_duplicates, TT_FORK, NULL, NULL }, { "get_channel_for_extend", test_channel_for_extend, TT_FORK, NULL, NULL }, { "listener", test_channel_listener, TT_FORK, NULL, NULL }, END_OF_TESTCASES };