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test/circuitbuild: Add tests for circuit_extend()
Part of 33633.
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teor
parent
2b66429fcf
commit
6d75f3244f
@ -21,6 +21,7 @@
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#include "core/or/circuitlist.h"
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#include "core/or/onion.h"
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#include "core/or/cell_st.h"
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#include "core/or/cpath_build_state_st.h"
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#include "core/or/extend_info_st.h"
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#include "core/or/origin_circuit_st.h"
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@ -841,6 +842,318 @@ test_circuit_open_connection_for_extend(void *arg)
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tor_free(fake_n_chan);
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}
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/* Guaranteed to be initialised to zero. */
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static extend_cell_t mock_extend_cell_parse_cell_out;
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static int mock_extend_cell_parse_result = 0;
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static int mock_extend_cell_parse_calls = 0;
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static int
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mock_extend_cell_parse(extend_cell_t *cell_out,
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const uint8_t command,
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const uint8_t *payload_in,
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size_t payload_len)
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{
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(void)command;
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(void)payload_in;
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(void)payload_len;
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mock_extend_cell_parse_calls++;
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memcpy(cell_out, &mock_extend_cell_parse_cell_out,
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sizeof(extend_cell_t));
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return mock_extend_cell_parse_result;
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}
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static int mock_channel_get_for_extend_calls = 0;
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static int mock_channel_get_for_extend_launch_out = 0;
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static channel_t *mock_channel_get_for_extend_nchan = NULL;
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static channel_t *
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mock_channel_get_for_extend(const char *rsa_id_digest,
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const ed25519_public_key_t *ed_id,
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const tor_addr_t *target_addr,
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const char **msg_out,
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int *launch_out)
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{
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(void)rsa_id_digest;
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(void)ed_id;
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(void)target_addr;
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/* channel_get_for_extend() requires non-NULL arguments */
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tt_ptr_op(msg_out, OP_NE, NULL);
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tt_ptr_op(launch_out, OP_NE, NULL);
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mock_channel_get_for_extend_calls++;
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*msg_out = NULL;
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*launch_out = mock_channel_get_for_extend_launch_out;
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return mock_channel_get_for_extend_nchan;
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done:
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return NULL;
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}
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static const char *
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mock_channel_get_canonical_remote_descr(channel_t *chan)
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{
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(void)chan;
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return "mock_channel_get_canonical_remote_descr()";
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}
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static int mock_circuit_deliver_create_cell_calls = 0;
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static int mock_circuit_deliver_create_cell_result = 0;
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static int
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mock_circuit_deliver_create_cell(circuit_t *circ,
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const struct create_cell_t *create_cell,
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int relayed)
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{
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(void)create_cell;
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/* circuit_deliver_create_cell() requires non-NULL arguments,
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* but we only check circ and circ->n_chan here. */
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tt_ptr_op(circ, OP_NE, NULL);
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tt_ptr_op(circ->n_chan, OP_NE, NULL);
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/* We should only ever get relayed cells from extends */
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tt_int_op(relayed, OP_EQ, 1);
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mock_circuit_deliver_create_cell_calls++;
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return mock_circuit_deliver_create_cell_result;
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done:
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return -1;
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}
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/* Test the different cases in circuit_extend(). */
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static void
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test_circuit_extend(void *arg)
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{
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(void)arg;
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cell_t *cell = tor_malloc_zero(sizeof(cell_t));
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channel_t *p_chan = tor_malloc_zero(sizeof(channel_t));
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or_circuit_t *or_circ = tor_malloc_zero(sizeof(or_circuit_t));
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circuit_t *circ = TO_CIRCUIT(or_circ);
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channel_t *fake_n_chan = tor_malloc_zero(sizeof(channel_t));
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server = 0;
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MOCK(server_mode, mock_server_mode);
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/* Mock a debug function, but otherwise ignore it */
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MOCK(channel_get_canonical_remote_descr,
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mock_channel_get_canonical_remote_descr);
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setup_full_capture_of_logs(LOG_INFO);
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/* Circuit must be non-NULL */
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tor_capture_bugs_(1);
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tt_int_op(circuit_extend(cell, NULL), OP_EQ, -1);
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tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_EQ, 1);
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tt_str_op(smartlist_get(tor_get_captured_bug_log_(), 0), OP_EQ,
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"!(ASSERT_PREDICT_UNLIKELY_(!circ))");
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tor_end_capture_bugs_();
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mock_clean_saved_logs();
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/* Cell must be non-NULL */
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tor_capture_bugs_(1);
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tt_int_op(circuit_extend(NULL, circ), OP_EQ, -1);
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tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_EQ, 1);
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tt_str_op(smartlist_get(tor_get_captured_bug_log_(), 0), OP_EQ,
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"!(ASSERT_PREDICT_UNLIKELY_(!cell))");
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tor_end_capture_bugs_();
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mock_clean_saved_logs();
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/* Extend cell and circuit must be non-NULL */
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tor_capture_bugs_(1);
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tt_int_op(circuit_extend(NULL, NULL), OP_EQ, -1);
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/* Since we're using IF_BUG_ONCE(), we might not log any bugs */
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tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_GE, 0);
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tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_LE, 2);
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tor_end_capture_bugs_();
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mock_clean_saved_logs();
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/* Clients can't extend */
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server = 0;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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expect_log_msg("Got an extend cell, but running as a client. Closing.\n");
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mock_clean_saved_logs();
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/* But servers can. Unpack the cell, but fail parsing. */
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server = 1;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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expect_log_msg("Can't parse extend cell. Closing circuit.\n");
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mock_clean_saved_logs();
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/* Now mock parsing */
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MOCK(extend_cell_parse, mock_extend_cell_parse);
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/* And make parsing succeed, but fail on adding ed25519 */
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memset(&mock_extend_cell_parse_cell_out, 0,
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sizeof(mock_extend_cell_parse_cell_out));
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mock_extend_cell_parse_result = 0;
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mock_extend_cell_parse_calls = 0;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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expect_log_msg(
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"Client asked me to extend without specifying an id_digest.\n");
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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/* Now add a node_id. Fail the lspec check because IPv4 and port are zero. */
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memset(&mock_extend_cell_parse_cell_out.node_id, 0xAA,
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sizeof(mock_extend_cell_parse_cell_out.node_id));
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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expect_log_msg("Client asked me to extend to "
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"zero destination port or addr.\n");
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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/* Now add a valid IPv4 and port. Fail the OR circuit magic check. */
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tor_addr_parse(&mock_extend_cell_parse_cell_out.orport_ipv4.addr,
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PUBLIC_IPV4);
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mock_extend_cell_parse_cell_out.orport_ipv4.port = VALID_PORT;
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tor_capture_bugs_(1);
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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tt_int_op(smartlist_len(tor_get_captured_bug_log_()), OP_EQ, 1);
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tt_str_op(smartlist_get(tor_get_captured_bug_log_(), 0), OP_EQ,
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"!(ASSERT_PREDICT_UNLIKELY_(circ->magic != 0x98ABC04Fu))");
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tor_end_capture_bugs_();
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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/* Now add the right magic and a p_chan. */
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or_circ->base_.magic = OR_CIRCUIT_MAGIC;
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or_circ->p_chan = p_chan;
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/* Mock channel_get_for_extend(), so it doesn't crash. */
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mock_channel_get_for_extend_calls = 0;
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MOCK(channel_get_for_extend, mock_channel_get_for_extend);
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/* Test circuit not established, but don't launch another one */
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mock_channel_get_for_extend_launch_out = 0;
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mock_channel_get_for_extend_nchan = NULL;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, 0);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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tt_int_op(mock_channel_get_for_extend_calls, OP_EQ, 1);
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/* cleanup */
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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mock_channel_get_for_extend_calls = 0;
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/* circ and or_circ are the same object */
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tor_free(circ->n_hop);
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tor_free(circ->n_chan_create_cell);
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/* Mock channel_connect_for_circuit(), so we don't crash */
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mock_channel_connect_calls = 0;
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MOCK(channel_connect_for_circuit, mock_channel_connect_for_circuit);
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/* Test circuit not established, and successful launch of a channel */
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mock_channel_get_for_extend_launch_out = 1;
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mock_channel_get_for_extend_nchan = NULL;
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mock_channel_connect_nchan = fake_n_chan;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, 0);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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tt_int_op(mock_channel_get_for_extend_calls, OP_EQ, 1);
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tt_int_op(mock_channel_connect_calls, OP_EQ, 1);
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/* cleanup */
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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mock_channel_get_for_extend_calls = 0;
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mock_channel_connect_calls = 0;
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/* circ and or_circ are the same object */
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tor_free(circ->n_hop);
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tor_free(circ->n_chan_create_cell);
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/* Mock circuit_deliver_create_cell(), so it doesn't crash */
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mock_circuit_deliver_create_cell_calls = 0;
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MOCK(circuit_deliver_create_cell, mock_circuit_deliver_create_cell);
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/* Test circuit established, re-using channel, successful delivery */
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mock_channel_get_for_extend_launch_out = 0;
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mock_channel_get_for_extend_nchan = fake_n_chan;
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mock_channel_connect_nchan = NULL;
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mock_circuit_deliver_create_cell_result = 0;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, 0);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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tt_int_op(mock_channel_get_for_extend_calls, OP_EQ, 1);
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tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
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tt_int_op(mock_circuit_deliver_create_cell_calls, OP_EQ, 1);
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tt_ptr_op(circ->n_chan, OP_EQ, fake_n_chan);
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/* cleanup */
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circ->n_chan = NULL;
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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mock_channel_get_for_extend_calls = 0;
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mock_channel_connect_calls = 0;
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mock_circuit_deliver_create_cell_calls = 0;
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/* circ and or_circ are the same object */
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tor_free(circ->n_hop);
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tor_free(circ->n_chan_create_cell);
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/* Test circuit established, re-using channel, failed delivery */
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mock_channel_get_for_extend_launch_out = 0;
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mock_channel_get_for_extend_nchan = fake_n_chan;
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mock_channel_connect_nchan = NULL;
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mock_circuit_deliver_create_cell_result = -1;
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tt_int_op(circuit_extend(cell, circ), OP_EQ, -1);
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tt_int_op(mock_extend_cell_parse_calls, OP_EQ, 1);
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tt_int_op(mock_channel_get_for_extend_calls, OP_EQ, 1);
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tt_int_op(mock_channel_connect_calls, OP_EQ, 0);
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tt_int_op(mock_circuit_deliver_create_cell_calls, OP_EQ, 1);
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tt_ptr_op(circ->n_chan, OP_EQ, fake_n_chan);
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/* cleanup */
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circ->n_chan = NULL;
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mock_clean_saved_logs();
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mock_extend_cell_parse_calls = 0;
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mock_channel_get_for_extend_calls = 0;
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mock_channel_connect_calls = 0;
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mock_circuit_deliver_create_cell_calls = 0;
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/* circ and or_circ are the same object */
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tor_free(circ->n_hop);
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tor_free(circ->n_chan_create_cell);
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done:
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tor_end_capture_bugs_();
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teardown_capture_of_logs();
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UNMOCK(server_mode);
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server = 0;
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UNMOCK(channel_get_canonical_remote_descr);
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UNMOCK(extend_cell_parse);
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memset(&mock_extend_cell_parse_cell_out, 0,
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sizeof(mock_extend_cell_parse_cell_out));
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mock_extend_cell_parse_result = 0;
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mock_extend_cell_parse_calls = 0;
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UNMOCK(channel_get_for_extend);
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mock_channel_get_for_extend_calls = 0;
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mock_channel_get_for_extend_launch_out = 0;
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mock_channel_get_for_extend_nchan = NULL;
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UNMOCK(channel_connect_for_circuit);
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mock_channel_connect_calls = 0;
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mock_channel_connect_nchan = NULL;
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UNMOCK(circuit_deliver_create_cell);
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mock_circuit_deliver_create_cell_calls = 0;
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mock_circuit_deliver_create_cell_result = 0;
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tor_free(cell);
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/* circ and or_circ are the same object */
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tor_free(circ->n_hop);
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tor_free(circ->n_chan_create_cell);
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tor_free(or_circ);
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tor_free(p_chan);
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tor_free(fake_n_chan);
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}
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#define TEST(name, flags, setup, cleanup) \
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{ #name, test_ ## name, flags, setup, cleanup }
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@ -862,5 +1175,6 @@ struct testcase_t circuitbuild_tests[] = {
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TEST_CIRCUIT(extend_add_ed25519, TT_FORK),
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TEST_CIRCUIT(extend_lspec_valid, TT_FORK),
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TEST_CIRCUIT(open_connection_for_extend, TT_FORK),
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TEST_CIRCUIT(extend, TT_FORK),
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END_OF_TESTCASES
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};
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