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/* Copyright (c) 2017-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#define CIRCUITBUILD_PRIVATE
#define CIRCUITSTATS_PRIVATE
#define CIRCUITLIST_PRIVATE
#define CHANNEL_FILE_PRIVATE
#include "core/or/or.h"
#include "test/test.h"
#include "test/test_helpers.h"
#include "test/log_test_helpers.h"
#include "app/config/config.h"
#include "core/or/circuitlist.h"
#include "core/or/circuitbuild.h"
#include "core/or/circuitstats.h"
#include "core/or/circuituse.h"
#include "core/or/channel.h"
#include "core/or/cpath_build_state_st.h"
#include "core/or/crypt_path_st.h"
#include "core/or/extend_info_st.h"
#include "core/or/origin_circuit_st.h"
void test_circuitstats_timeout(void *arg);
void test_circuitstats_hoplen(void *arg);
origin_circuit_t *subtest_fourhop_circuit(struct timeval, int);
origin_circuit_t *add_opened_threehop(void);
origin_circuit_t *build_unopened_fourhop(struct timeval);
int cpath_append_hop(crypt_path_t **head_ptr, extend_info_t *choice);
static int marked_for_close;
/* Mock function because we are not trying to test the close circuit that does
* an awful lot of checks on the circuit object. */
static void
mock_circuit_mark_for_close(circuit_t *circ, int reason, int line,
const char *file)
{
(void) circ;
(void) reason;
(void) line;
(void) file;
marked_for_close = 1;
return;
}
origin_circuit_t *
add_opened_threehop(void)
{
origin_circuit_t *or_circ = origin_circuit_new();
extend_info_t fakehop;
memset(&fakehop, 0, sizeof(fakehop));
TO_CIRCUIT(or_circ)->purpose = CIRCUIT_PURPOSE_C_GENERAL;
or_circ->build_state = tor_malloc_zero(sizeof(cpath_build_state_t));
or_circ->build_state->desired_path_len = DEFAULT_ROUTE_LEN;
cpath_append_hop(&or_circ->cpath, &fakehop);
cpath_append_hop(&or_circ->cpath, &fakehop);
cpath_append_hop(&or_circ->cpath, &fakehop);
or_circ->has_opened = 1;
TO_CIRCUIT(or_circ)->state = CIRCUIT_STATE_OPEN;
TO_CIRCUIT(or_circ)->purpose = CIRCUIT_PURPOSE_C_GENERAL;
return or_circ;
}
origin_circuit_t *
build_unopened_fourhop(struct timeval circ_start_time)
{
origin_circuit_t *or_circ = origin_circuit_new();
extend_info_t *fakehop = tor_malloc_zero(sizeof(extend_info_t));
memset(fakehop, 0, sizeof(extend_info_t));
TO_CIRCUIT(or_circ)->purpose = CIRCUIT_PURPOSE_C_GENERAL;
TO_CIRCUIT(or_circ)->timestamp_began = circ_start_time;
TO_CIRCUIT(or_circ)->timestamp_created = circ_start_time;
or_circ->build_state = tor_malloc_zero(sizeof(cpath_build_state_t));
or_circ->build_state->desired_path_len = 4;
cpath_append_hop(&or_circ->cpath, fakehop);
cpath_append_hop(&or_circ->cpath, fakehop);
cpath_append_hop(&or_circ->cpath, fakehop);
cpath_append_hop(&or_circ->cpath, fakehop);
tor_free(fakehop);
return or_circ;
}
origin_circuit_t *
subtest_fourhop_circuit(struct timeval circ_start_time, int should_timeout)
{
origin_circuit_t *or_circ = build_unopened_fourhop(circ_start_time);
// Now make them open one at a time and call
// circuit_build_times_handle_completed_hop();
or_circ->cpath->state = CPATH_STATE_OPEN;
circuit_build_times_handle_completed_hop(or_circ);
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 0);
or_circ->cpath->next->state = CPATH_STATE_OPEN;
circuit_build_times_handle_completed_hop(or_circ);
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 0);
// Third hop: We should count it now.
or_circ->cpath->next->next->state = CPATH_STATE_OPEN;
circuit_build_times_handle_completed_hop(or_circ);
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ,
!should_timeout); // 1 if counted, 0 otherwise
// Fourth hop: Don't double count
or_circ->cpath->next->next->next->state = CPATH_STATE_OPEN;
circuit_build_times_handle_completed_hop(or_circ);
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ,
!should_timeout);
done:
return or_circ;
}
void
test_circuitstats_hoplen(void *arg)
{
/* Plan:
* 0. Test no other opened circs (relaxed timeout)
* 1. Check >3 hop circ building w/o timeout
* 2. Check >3 hop circs w/ timeouts..
*/
struct timeval circ_start_time;
origin_circuit_t *threehop = NULL;
origin_circuit_t *fourhop = NULL;
(void)arg;
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
circuit_build_times_init(get_circuit_build_times_mutable());
// Let's set a close_ms to 2X the initial timeout, so we can
// test relaxed functionality (which uses the close_ms timeout)
get_circuit_build_times_mutable()->close_ms *= 2;
tor_gettimeofday(&circ_start_time);
circ_start_time.tv_sec -= 119; // make us hit "relaxed" cutoff
// Test 1: Build a fourhop circuit that should get marked
// as relaxed and eventually counted by circuit_expire_building
// (but not before)
fourhop = subtest_fourhop_circuit(circ_start_time, 0);
tt_int_op(fourhop->relaxed_timeout, OP_EQ, 0);
tt_int_op(marked_for_close, OP_EQ, 0);
circuit_expire_building();
tt_int_op(marked_for_close, OP_EQ, 0);
tt_int_op(fourhop->relaxed_timeout, OP_EQ, 1);
TO_CIRCUIT(fourhop)->timestamp_began.tv_sec -= 119;
circuit_expire_building();
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 1);
tt_int_op(marked_for_close, OP_EQ, 1);
circuit_free_(TO_CIRCUIT(fourhop));
circuit_build_times_reset(get_circuit_build_times_mutable());
// Test 2: Add a threehop circuit for non-relaxed timeouts
threehop = add_opened_threehop();
/* This circuit should not timeout */
tor_gettimeofday(&circ_start_time);
circ_start_time.tv_sec -= 59;
fourhop = subtest_fourhop_circuit(circ_start_time, 0);
circuit_expire_building();
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 1);
tt_int_op(TO_CIRCUIT(fourhop)->purpose, OP_NE,
CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT);
circuit_free_((circuit_t *)fourhop);
circuit_build_times_reset(get_circuit_build_times_mutable());
/* Test 3: This circuit should now time out and get marked as a
* measurement circuit, but still get counted (and counted only once)
*/
circ_start_time.tv_sec -= 2;
fourhop = subtest_fourhop_circuit(circ_start_time, 0);
tt_int_op(TO_CIRCUIT(fourhop)->purpose, OP_EQ,
CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT);
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 1);
circuit_expire_building();
tt_int_op(get_circuit_build_times()->total_build_times, OP_EQ, 1);
done:
UNMOCK(circuit_mark_for_close_);
circuit_free_(TO_CIRCUIT(threehop));
circuit_free_(TO_CIRCUIT(fourhop));
circuit_build_times_free_timeouts(get_circuit_build_times_mutable());
}
#define TEST_CIRCUITSTATS(name, flags) \
{ #name, test_##name, (flags), &helper_pubsub_setup, NULL }
struct testcase_t circuitstats_tests[] = {
TEST_CIRCUITSTATS(circuitstats_hoplen, TT_FORK),
END_OF_TESTCASES
};
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