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/* Copyright (c) 2013, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#define TOR_CHANNEL_INTERNAL_
#define CIRCUITLIST_PRIVATE
#include "or.h"
#include "channel.h"
#include "circuitlist.h"
#include "test.h"
static channel_t *
new_fake_channel(void)
{
channel_t *chan = tor_malloc_zero(sizeof(channel_t));
channel_init(chan);
return chan;
}
static struct {
int ncalls;
void *cmux;
void *circ;
cell_direction_t dir;
} cam;
static void
circuitmux_attach_mock(circuitmux_t *cmux, circuit_t *circ,
cell_direction_t dir)
{
++cam.ncalls;
cam.cmux = cmux;
cam.circ = circ;
cam.dir = dir;
}
static struct {
int ncalls;
void *cmux;
void *circ;
} cdm;
static void
circuitmux_detach_mock(circuitmux_t *cmux, circuit_t *circ)
{
++cdm.ncalls;
cdm.cmux = cmux;
cdm.circ = circ;
}
#define GOT_CMUX_ATTACH(mux_, circ_, dir_) do { \
tt_int_op(cam.ncalls, ==, 1); \
tt_ptr_op(cam.cmux, ==, (mux_)); \
tt_ptr_op(cam.circ, ==, (circ_)); \
tt_ptr_op(cam.dir, ==, (dir_)); \
memset(&cam, 0, sizeof(cam)); \
} while (0)
#define GOT_CMUX_DETACH(mux_, circ_) do { \
tt_int_op(cdm.ncalls, ==, 1); \
tt_ptr_op(cdm.cmux, ==, (mux_)); \
tt_ptr_op(cdm.circ, ==, (circ_)); \
memset(&cdm, 0, sizeof(cdm)); \
} while (0)
static void
test_clist_maps(void *arg)
{
channel_t *ch1 = new_fake_channel();
channel_t *ch2 = new_fake_channel();
channel_t *ch3 = new_fake_channel();
or_circuit_t *or_c1=NULL, *or_c2=NULL;
(void) arg;
MOCK(circuitmux_attach_circuit, circuitmux_attach_mock);
MOCK(circuitmux_detach_circuit, circuitmux_detach_mock);
memset(&cam, 0, sizeof(cam));
memset(&cdm, 0, sizeof(cdm));
ch1->cmux = (void*)0x1001;
ch2->cmux = (void*)0x1002;
ch3->cmux = (void*)0x1003;
or_c1 = or_circuit_new(100, ch2);
tt_assert(or_c1);
GOT_CMUX_ATTACH(ch2->cmux, or_c1, CELL_DIRECTION_IN);
tt_int_op(or_c1->p_circ_id, ==, 100);
tt_ptr_op(or_c1->p_chan, ==, ch2);
or_c2 = or_circuit_new(100, ch1);
tt_assert(or_c2);
GOT_CMUX_ATTACH(ch1->cmux, or_c2, CELL_DIRECTION_IN);
tt_int_op(or_c2->p_circ_id, ==, 100);
tt_ptr_op(or_c2->p_chan, ==, ch1);
circuit_set_n_circid_chan(TO_CIRCUIT(or_c1), 200, ch1);
GOT_CMUX_ATTACH(ch1->cmux, or_c1, CELL_DIRECTION_OUT);
circuit_set_n_circid_chan(TO_CIRCUIT(or_c2), 200, ch2);
GOT_CMUX_ATTACH(ch2->cmux, or_c2, CELL_DIRECTION_OUT);
tt_ptr_op(circuit_get_by_circid_channel(200, ch1), ==, TO_CIRCUIT(or_c1));
tt_ptr_op(circuit_get_by_circid_channel(200, ch2), ==, TO_CIRCUIT(or_c2));
tt_ptr_op(circuit_get_by_circid_channel(100, ch2), ==, TO_CIRCUIT(or_c1));
/* Try the same thing again, to test the "fast" path. */
tt_ptr_op(circuit_get_by_circid_channel(100, ch2), ==, TO_CIRCUIT(or_c1));
tt_assert(circuit_id_in_use_on_channel(100, ch2));
tt_assert(! circuit_id_in_use_on_channel(101, ch2));
/* Try changing the circuitid and channel of that circuit. */
circuit_set_p_circid_chan(or_c1, 500, ch3);
GOT_CMUX_DETACH(ch2->cmux, TO_CIRCUIT(or_c1));
GOT_CMUX_ATTACH(ch3->cmux, TO_CIRCUIT(or_c1), CELL_DIRECTION_IN);
tt_ptr_op(circuit_get_by_circid_channel(100, ch2), ==, NULL);
tt_assert(! circuit_id_in_use_on_channel(100, ch2));
tt_ptr_op(circuit_get_by_circid_channel(500, ch3), ==, TO_CIRCUIT(or_c1));
/* Now let's see about destroy handling. */
tt_assert(! circuit_id_in_use_on_channel(205, ch2));
tt_assert(circuit_id_in_use_on_channel(200, ch2));
channel_note_destroy_pending(ch2, 200);
channel_note_destroy_pending(ch2, 205);
channel_note_destroy_pending(ch1, 100);
tt_assert(circuit_id_in_use_on_channel(205, ch2))
tt_assert(circuit_id_in_use_on_channel(200, ch2));
tt_assert(circuit_id_in_use_on_channel(100, ch1));
tt_assert(TO_CIRCUIT(or_c2)->n_delete_pending != 0);
tt_ptr_op(circuit_get_by_circid_channel(200, ch2), ==, TO_CIRCUIT(or_c2));
tt_ptr_op(circuit_get_by_circid_channel(100, ch1), ==, TO_CIRCUIT(or_c2));
/* Okay, now free ch2 and make sure that the circuit ID is STILL not
* usable, because we haven't declared the destroy to be nonpending */
tt_int_op(cdm.ncalls, ==, 0);
circuit_free(TO_CIRCUIT(or_c2));
or_c2 = NULL; /* prevent free */
tt_int_op(cdm.ncalls, ==, 2);
memset(&cdm, 0, sizeof(cdm));
tt_assert(circuit_id_in_use_on_channel(200, ch2));
tt_assert(circuit_id_in_use_on_channel(100, ch1));
tt_ptr_op(circuit_get_by_circid_channel(200, ch2), ==, NULL);
tt_ptr_op(circuit_get_by_circid_channel(100, ch1), ==, NULL);
/* Now say that the destroy is nonpending */
channel_note_destroy_not_pending(ch2, 200);
tt_ptr_op(circuit_get_by_circid_channel(200, ch2), ==, NULL);
channel_note_destroy_not_pending(ch1, 100);
tt_ptr_op(circuit_get_by_circid_channel(100, ch1), ==, NULL);
tt_assert(! circuit_id_in_use_on_channel(200, ch2));
tt_assert(! circuit_id_in_use_on_channel(100, ch1));
done:
tor_free(ch1);
tor_free(ch2);
tor_free(ch3);
if (or_c1)
circuit_free(TO_CIRCUIT(or_c1));
if (or_c2)
circuit_free(TO_CIRCUIT(or_c2));
UNMOCK(circuitmux_attach_circuit);
UNMOCK(circuitmux_detach_circuit);
}
struct testcase_t circuitlist_tests[] = {
{ "maps", test_clist_maps, TT_FORK, NULL, NULL },
END_OF_TESTCASES
};
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