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test/circuitbuild: Add tests for open_connection_for_extend

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Part of 33633.
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teor 2020-04-03 19:02:26 +10:00
parent 42fdbbb50b
commit 7bc3413322
1 changed files with 157 additions and 0 deletions
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157
src/test/test_circuitbuild.c
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@ -685,6 +685,162 @@ test_circuit_extend_lspec_valid(void *arg)
tor_free(p_chan);
}
static int mock_circuit_close_calls = 0;
static void
mock_circuit_mark_for_close_(circuit_t *circ, int reason,
int line, const char *cfile)
{
(void)circ;
(void)reason;
(void)line;
(void)cfile;
mock_circuit_close_calls++;
}
static int mock_channel_connect_calls = 0;
static channel_t *mock_channel_connect_nchan = NULL;
static channel_t *
mock_channel_connect_for_circuit(const tor_addr_t *addr,
uint16_t port,
const char *id_digest,
const struct ed25519_public_key_t *ed_id)
{
(void)addr;
(void)port;
(void)id_digest;
(void)ed_id;
mock_channel_connect_calls++;
return mock_channel_connect_nchan;
}
/* Test the different cases in circuit_open_connection_for_extend(). */
static void
test_circuit_open_connection_for_extend(void *arg)
{
(void)arg;
extend_cell_t *ec = tor_malloc_zero(sizeof(extend_cell_t));
circuit_t *circ = tor_malloc_zero(sizeof(circuit_t));
channel_t *fake_n_chan = tor_malloc_zero(sizeof(channel_t));
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close_);
mock_circuit_close_calls = 0;
MOCK(channel_connect_for_circuit, mock_channel_connect_for_circuit);
mock_channel_connect_calls = 0;
mock_channel_connect_nchan = NULL;
setup_full_capture_of_logs(LOG_INFO);
/* Circuit must be non-NULL */
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
tor_capture_bugs_(1);
circuit_open_connection_for_extend(ec, NULL, 0);
/* We can't close a NULL circuit */
tt_int_op(mock_circuit_close_calls, OP_EQ, 0);
tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_EQ, 1);
tt_str_op(smartlist_get(tor_get_captured_bug_log_(), 0), OP_EQ,
"!(ASSERT_PREDICT_UNLIKELY_(!circ))");
tor_end_capture_bugs_();
mock_clean_saved_logs();
/* Extend cell must be non-NULL */
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
tor_capture_bugs_(1);
circuit_open_connection_for_extend(NULL, circ, 0);
tt_int_op(mock_circuit_close_calls, OP_EQ, 1);
tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_EQ, 1);
tt_str_op(smartlist_get(tor_get_captured_bug_log_(), 0), OP_EQ,
"!(ASSERT_PREDICT_UNLIKELY_(!ec))");
tor_end_capture_bugs_();
mock_clean_saved_logs();
/* Extend cell and circuit must be non-NULL */
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
tor_capture_bugs_(1);
circuit_open_connection_for_extend(NULL, NULL, 0);
/* We can't close a NULL circuit */
tt_int_op(mock_circuit_close_calls, OP_EQ, 0);
tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
/* Since we're using IF_BUG_ONCE(), we might not log any bugs */
tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_GE, 0);
tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_LE, 2);
tor_end_capture_bugs_();
mock_clean_saved_logs();
/* Succeed, but don't try to open a connection */
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
circuit_open_connection_for_extend(ec, circ, 0);
/* If we haven't closed the circuit, that's success */
tt_int_op(mock_circuit_close_calls, OP_EQ, 0);
tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
/* Check state */
tt_ptr_op(circ->n_hop, OP_NE, NULL);
tt_ptr_op(circ->n_chan_create_cell, OP_NE, NULL);
tt_int_op(circ->state, OP_EQ, CIRCUIT_STATE_CHAN_WAIT);
/* Cleanup */
mock_clean_saved_logs();
tor_free(circ->n_hop);
tor_free(circ->n_chan_create_cell);
circ->state = 0;
/* Try to open a connection, but fail with a NULL n_chan */
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
circuit_open_connection_for_extend(ec, circ, 1);
/* Try to connect, but fail, and close the circuit */
tt_int_op(mock_circuit_close_calls, OP_EQ, 1);
tt_int_op(mock_channel_connect_calls, OP_EQ, 1);
expect_log_msg("Launching n_chan failed. Closing circuit.\n");
/* Check state */
tt_ptr_op(circ->n_hop, OP_NE, NULL);
tt_ptr_op(circ->n_chan_create_cell, OP_NE, NULL);
tt_int_op(circ->state, OP_EQ, CIRCUIT_STATE_CHAN_WAIT);
/* Cleanup */
mock_clean_saved_logs();
tor_free(circ->n_hop);
tor_free(circ->n_chan_create_cell);
circ->state = 0;
/* Try to open a connection, and succeed, because n_chan is not NULL */
mock_channel_connect_nchan = fake_n_chan;
mock_circuit_close_calls = 0;
mock_channel_connect_calls = 0;
circuit_open_connection_for_extend(ec, circ, 1);
/* Try to connect, and succeed, leaving the circuit open */
tt_int_op(mock_circuit_close_calls, OP_EQ, 0);
tt_int_op(mock_channel_connect_calls, OP_EQ, 1);
/* Check state */
tt_ptr_op(circ->n_hop, OP_NE, NULL);
tt_ptr_op(circ->n_chan_create_cell, OP_NE, NULL);
tt_int_op(circ->state, OP_EQ, CIRCUIT_STATE_CHAN_WAIT);
/* Cleanup */
mock_clean_saved_logs();
tor_free(circ->n_hop);
tor_free(circ->n_chan_create_cell);
circ->state = 0;
mock_channel_connect_nchan = NULL;
done:
tor_end_capture_bugs_();
teardown_capture_of_logs();
UNMOCK(circuit_mark_for_close_);
mock_circuit_close_calls = 0;
UNMOCK(channel_connect_for_circuit);
mock_channel_connect_calls = 0;
tor_free(ec);
tor_free(circ->n_hop);
tor_free(circ->n_chan_create_cell);
tor_free(circ);
tor_free(fake_n_chan);
}
#define TEST(name, flags, setup, cleanup) \
{ #name, test_ ## name, flags, setup, cleanup }
@ -705,5 +861,6 @@ struct testcase_t circuitbuild_tests[] = {
TEST_CIRCUIT(extend_state_valid, TT_FORK),
TEST_CIRCUIT(extend_add_ed25519, TT_FORK),
TEST_CIRCUIT(extend_lspec_valid, TT_FORK),
TEST_CIRCUIT(open_connection_for_extend, TT_FORK),
END_OF_TESTCASES
};