void
command_setup_channel(channel_t *chan)
{
tor_assert(chan);
channel_set_cell_handlers(chan,
command_process_cell,
command_process_var_cell);
}
/* 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);
}
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;
}
