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tor/src/test/test_connection.c

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Prop210: Refactor connection_get_* to produce lists and counts
2015-12-07 07:40:56 +01:00
/* Copyright (c) 2015, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#define CONNECTION_PRIVATE
#define MAIN_PRIVATE
#include "or.h"
#include "test.h"
#include "connection.h"
#include "main.h"
#include "networkstatus.h"
#include "rendcache.h"
#include "directory.h"
static void test_conn_lookup_addr_helper(const char *address,
int family,
tor_addr_t *addr);
static void * test_conn_get_basic_setup(const struct testcase_t *tc);
static int test_conn_get_basic_teardown(const struct testcase_t *tc,
void *arg);
static void * test_conn_get_rend_setup(const struct testcase_t *tc);
static int test_conn_get_rend_teardown(const struct testcase_t *tc,
void *arg);
static void * test_conn_get_rsrc_setup(const struct testcase_t *tc);
static int test_conn_get_rsrc_teardown(const struct testcase_t *tc,
void *arg);
/* Arbitrary choice - IPv4 Directory Connection to localhost */
#define TEST_CONN_TYPE (CONN_TYPE_DIR)
/* We assume every machine has IPv4 localhost, is that ok? */
#define TEST_CONN_ADDRESS "127.0.0.1"
#define TEST_CONN_PORT (12345)
#define TEST_CONN_ADDRESS_PORT "127.0.0.1:12345"
#define TEST_CONN_FAMILY (AF_INET)
#define TEST_CONN_STATE (DIR_CONN_STATE_MIN_)
#define TEST_CONN_ADDRESS_2 "127.0.0.2"
#define TEST_CONN_BASIC_PURPOSE (DIR_PURPOSE_MIN_)
#define TEST_CONN_REND_ADDR "cfs3rltphxxvabci"
#define TEST_CONN_REND_PURPOSE (DIR_PURPOSE_FETCH_RENDDESC_V2)
#define TEST_CONN_REND_PURPOSE_SUCCESSFUL (DIR_PURPOSE_HAS_FETCHED_RENDDESC_V2)
#define TEST_CONN_REND_TYPE_2 (CONN_TYPE_AP)
#define TEST_CONN_REND_ADDR_2 "icbavxxhptlr3sfc"
#define TEST_CONN_RSRC (networkstatus_get_flavor_name(FLAV_MICRODESC))
#define TEST_CONN_RSRC_PURPOSE (DIR_PURPOSE_FETCH_CONSENSUS)
#define TEST_CONN_RSRC_STATE_SUCCESSFUL (DIR_CONN_STATE_CLIENT_FINISHED)
#define TEST_CONN_RSRC_2 (networkstatus_get_flavor_name(FLAV_NS))
#define TEST_CONN_DL_STATE (DIR_CONN_STATE_CLIENT_SENDING)
#define TEST_CONN_FD_INIT 50
static int mock_connection_connect_sockaddr_called = 0;
static int fake_socket_number = TEST_CONN_FD_INIT;
static int
mock_connection_connect_sockaddr(connection_t *conn,
const struct sockaddr *sa,
socklen_t sa_len,
const struct sockaddr *bindaddr,
socklen_t bindaddr_len,
int *socket_error)
{
(void)sa_len;
(void)bindaddr;
(void)bindaddr_len;
tor_assert(conn);
tor_assert(sa);
tor_assert(socket_error);
mock_connection_connect_sockaddr_called++;
conn->s = fake_socket_number++;
tt_assert(SOCKET_OK(conn->s));
/* We really should call tor_libevent_initialize() here. Because we don't,
* we are relying on other parts of the code not checking if the_event_base
* (and therefore event->ev_base) is NULL. */
tt_assert(connection_add_connecting(conn) == 0);
done:
/* Fake "connected" status */
return 1;
}
static void
test_conn_lookup_addr_helper(const char *address, int family, tor_addr_t *addr)
{
int rv = 0;
tt_assert(addr);
rv = tor_addr_lookup(address, family, addr);
/* XXXX - should we retry on transient failure? */
tt_assert(rv == 0);
tt_assert(tor_addr_is_loopback(addr));
tt_assert(tor_addr_is_v4(addr));
return;
done:
tor_addr_make_null(addr, TEST_CONN_FAMILY);
}
static void *
test_conn_get_basic_setup(const struct testcase_t *tc)
{
connection_t *conn = NULL;
tor_addr_t addr;
int socket_err = 0;
int in_progress = 0;
(void)tc;
MOCK(connection_connect_sockaddr,
mock_connection_connect_sockaddr);
init_connection_lists();
conn = connection_new(TEST_CONN_TYPE, TEST_CONN_FAMILY);
tt_assert(conn);
test_conn_lookup_addr_helper(TEST_CONN_ADDRESS, TEST_CONN_FAMILY, &addr);
tt_assert(!tor_addr_is_null(&addr));
/* XXXX - connection_connect doesn't set these, should it? */
tor_addr_copy_tight(&conn->addr, &addr);
conn->port = TEST_CONN_PORT;
mock_connection_connect_sockaddr_called = 0;
in_progress = connection_connect(conn, TEST_CONN_ADDRESS_PORT, &addr,
TEST_CONN_PORT, &socket_err);
tt_assert(mock_connection_connect_sockaddr_called == 1);
tt_assert(!socket_err);
tt_assert(in_progress == 0 || in_progress == 1);
/* fake some of the attributes so the connection looks OK */
conn->state = TEST_CONN_STATE;
conn->purpose = TEST_CONN_BASIC_PURPOSE;
assert_connection_ok(conn, time(NULL));
UNMOCK(connection_connect_sockaddr);
return conn;
/* On failure */
done:
UNMOCK(connection_connect_sockaddr);
test_conn_get_basic_teardown(tc, conn);
/* Returning NULL causes the unit test to fail */
return NULL;
}
static int
test_conn_get_basic_teardown(const struct testcase_t *tc, void *arg)
{
(void)tc;
connection_t *conn = arg;
tt_assert(conn);
assert_connection_ok(conn, time(NULL));
/* teardown the connection as fast as possible */
if (conn->linked_conn) {
assert_connection_ok(conn->linked_conn, time(NULL));
/* We didn't call tor_libevent_initialize(), so event_base was NULL,
* so we can't rely on connection_unregister_events() use of event_del().
*/
if (conn->linked_conn->read_event) {
tor_free(conn->linked_conn->read_event);
conn->linked_conn->read_event = NULL;
}
if (conn->linked_conn->write_event) {
tor_free(conn->linked_conn->write_event);
conn->linked_conn->write_event = NULL;
}
connection_free(conn->linked_conn);
conn->linked_conn = NULL;
conn->linked_conn->linked_conn = NULL;
if (!conn->linked_conn->marked_for_close) {
connection_close_immediate(conn->linked_conn);
connection_mark_for_close(conn->linked_conn);
}
}
/* We didn't set the events up properly, so we can't use event_del() in
* close_closeable_connections() > connection_free()
* > connection_unregister_events() */
if (conn->read_event) {
tor_free(conn->read_event);
conn->read_event = NULL;
}
if (conn->write_event) {
tor_free(conn->write_event);
conn->write_event = NULL;
}
if (!conn->marked_for_close) {
connection_close_immediate(conn);
connection_mark_for_close(conn);
}
close_closeable_connections();
/* The unit test will fail if we return 0 */
return 1;
/* When conn == NULL, we can't cleanup anything */
done:
return 0;
}
static void *
test_conn_get_rend_setup(const struct testcase_t *tc)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t,
test_conn_get_basic_setup(tc));
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
rend_cache_init();
/* TODO: use directory_initiate_command_rend() to do this - maybe? */
conn->rend_data = tor_malloc_zero(sizeof(rend_data_t));
memcpy(conn->rend_data->onion_address,
TEST_CONN_REND_ADDR,
REND_SERVICE_ADDRESS_LEN+1);
conn->rend_data->hsdirs_fp = smartlist_new();
conn->base_.purpose = TEST_CONN_REND_PURPOSE;
assert_connection_ok(&conn->base_, time(NULL));
return conn;
/* On failure */
done:
test_conn_get_rend_teardown(tc, conn);
/* Returning NULL causes the unit test to fail */
return NULL;
}
static int
test_conn_get_rend_teardown(const struct testcase_t *tc, void *arg)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t, arg);
int rv = 0;
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
/* avoid a last-ditch attempt to refetch the descriptor */
conn->base_.purpose = TEST_CONN_REND_PURPOSE_SUCCESSFUL;
/* connection_free_() cleans up rend_data */
rv = test_conn_get_basic_teardown(tc, arg);
done:
rend_cache_free_all();
return rv;
}
static void *
test_conn_get_rsrc_setup(const struct testcase_t *tc)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t,
test_conn_get_basic_setup(tc));
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
/* TODO: use the canonical function to do this - maybe? */
conn->requested_resource = tor_strdup(TEST_CONN_RSRC);
conn->base_.purpose = TEST_CONN_RSRC_PURPOSE;
assert_connection_ok(&conn->base_, time(NULL));
return conn;
/* On failure */
done:
test_conn_get_rend_teardown(tc, conn);
/* Returning NULL causes the unit test to fail */
return NULL;
}
static int
test_conn_get_rsrc_teardown(const struct testcase_t *tc, void *arg)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t, arg);
int rv = 0;
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
/* avoid a last-ditch attempt to refetch the consensus */
conn->base_.state = TEST_CONN_RSRC_STATE_SUCCESSFUL;
/* connection_free_() cleans up requested_resource */
rv = test_conn_get_basic_teardown(tc, arg);
done:
return rv;
}
static void *
test_conn_download_status_setup(const struct testcase_t *tc)
{
(void)tc;
/* Don't return NULL, that causes the test to fail */
return "ok";
}
static int
test_conn_download_status_teardown(const struct testcase_t *tc, void *arg)
{
(void)arg;
int rv = 0;
/* Ignore arg, and just loop through the connection array */
SMARTLIST_FOREACH_BEGIN(get_connection_array(), connection_t *, conn) {
if (conn) {
assert_connection_ok(conn, time(NULL));
/* connection_free_() cleans up requested_resource */
rv = test_conn_get_rsrc_teardown(tc, conn);
tt_assert(rv == 1);
}
} SMARTLIST_FOREACH_END(conn);
done:
return rv;
}
static dir_connection_t *
test_conn_download_status_add_a_connection(void)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t,
test_conn_get_rsrc_setup(NULL));
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
return conn;
done:
test_conn_download_status_teardown(NULL, NULL);
return NULL;
}
static struct testcase_setup_t test_conn_get_basic_st = {
test_conn_get_basic_setup, test_conn_get_basic_teardown
};
static struct testcase_setup_t test_conn_get_rend_st = {
test_conn_get_rend_setup, test_conn_get_rend_teardown
};
static struct testcase_setup_t test_conn_get_rsrc_st = {
test_conn_get_rsrc_setup, test_conn_get_rsrc_teardown
};
static struct testcase_setup_t test_conn_download_status_st = {
test_conn_download_status_setup, test_conn_download_status_teardown
};
static void
test_conn_get_basic(void *arg)
{
connection_t *conn = (connection_t*)arg;
tor_addr_t addr, addr2;
tt_assert(conn);
assert_connection_ok(conn, time(NULL));
test_conn_lookup_addr_helper(TEST_CONN_ADDRESS, TEST_CONN_FAMILY, &addr);
tt_assert(!tor_addr_is_null(&addr));
test_conn_lookup_addr_helper(TEST_CONN_ADDRESS_2, TEST_CONN_FAMILY, &addr2);
tt_assert(!tor_addr_is_null(&addr2));
/* Check that we get this connection back when we search for it by
* its attributes, but get NULL when we supply a different value. */
tt_assert(connection_get_by_global_id(conn->global_identifier) == conn);
tt_assert(connection_get_by_global_id(!conn->global_identifier) == NULL);
tt_assert(connection_get_by_type(conn->type) == conn);
tt_assert(connection_get_by_type(TEST_CONN_TYPE) == conn);
tt_assert(connection_get_by_type(!conn->type) == NULL);
tt_assert(connection_get_by_type(!TEST_CONN_TYPE) == NULL);
tt_assert(connection_get_by_type_state(conn->type, conn->state)
== conn);
tt_assert(connection_get_by_type_state(TEST_CONN_TYPE, TEST_CONN_STATE)
== conn);
tt_assert(connection_get_by_type_state(!conn->type, !conn->state)
== NULL);
tt_assert(connection_get_by_type_state(!TEST_CONN_TYPE, !TEST_CONN_STATE)
== NULL);
/* Match on the connection fields themselves */
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&conn->addr,
conn->port,
conn->purpose)
== conn);
/* Match on the original inputs to the connection */
tt_assert(connection_get_by_type_addr_port_purpose(TEST_CONN_TYPE,
&conn->addr,
conn->port,
conn->purpose)
== conn);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&addr,
conn->port,
conn->purpose)
== conn);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&conn->addr,
TEST_CONN_PORT,
conn->purpose)
== conn);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&conn->addr,
conn->port,
TEST_CONN_BASIC_PURPOSE)
== conn);
tt_assert(connection_get_by_type_addr_port_purpose(TEST_CONN_TYPE,
&addr,
TEST_CONN_PORT,
TEST_CONN_BASIC_PURPOSE)
== conn);
/* Then try each of the not-matching combinations */
tt_assert(connection_get_by_type_addr_port_purpose(!conn->type,
&conn->addr,
conn->port,
conn->purpose)
== NULL);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&addr2,
conn->port,
conn->purpose)
== NULL);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&conn->addr,
!conn->port,
conn->purpose)
== NULL);
tt_assert(connection_get_by_type_addr_port_purpose(conn->type,
&conn->addr,
conn->port,
!conn->purpose)
== NULL);
/* Then try everything not-matching */
tt_assert(connection_get_by_type_addr_port_purpose(!conn->type,
&addr2,
!conn->port,
!conn->purpose)
== NULL);
tt_assert(connection_get_by_type_addr_port_purpose(!TEST_CONN_TYPE,
&addr2,
!TEST_CONN_PORT,
!TEST_CONN_BASIC_PURPOSE)
== NULL);
done:
;
}
static void
test_conn_get_rend(void *arg)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t, arg);
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
tt_assert(connection_get_by_type_state_rendquery(
conn->base_.type,
conn->base_.state,
conn->rend_data->onion_address)
== TO_CONN(conn));
tt_assert(connection_get_by_type_state_rendquery(
TEST_CONN_TYPE,
TEST_CONN_STATE,
TEST_CONN_REND_ADDR)
== TO_CONN(conn));
tt_assert(connection_get_by_type_state_rendquery(TEST_CONN_REND_TYPE_2,
!conn->base_.state,
"")
== NULL);
tt_assert(connection_get_by_type_state_rendquery(TEST_CONN_REND_TYPE_2,
!TEST_CONN_STATE,
TEST_CONN_REND_ADDR_2)
== NULL);
done:
;
}
#define sl_is_conn_assert(sl, conn) \
do { \
tt_assert(smartlist_len((sl)) == 1); \
tt_assert(smartlist_get((sl), 0) == (conn)); \
} while (0)
#define sl_no_conn_assert(sl) \
do { \
tt_assert(smartlist_len((sl)) == 0); \
} while (0)
static void
test_conn_get_rsrc(void *arg)
{
dir_connection_t *conn = DOWNCAST(dir_connection_t, arg);
tt_assert(conn);
assert_connection_ok(&conn->base_, time(NULL));
tt_assert(connection_dir_get_by_purpose_and_resource(
conn->base_.purpose,
conn->requested_resource)
== conn);
tt_assert(connection_dir_get_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC)
== conn);
tt_assert(connection_dir_get_by_purpose_and_resource(
!conn->base_.purpose,
"")
== NULL);
tt_assert(connection_dir_get_by_purpose_and_resource(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2)
== NULL);
tt_assert(connection_dir_get_by_purpose_resource_and_state(
conn->base_.purpose,
conn->requested_resource,
conn->base_.state)
== conn);
tt_assert(connection_dir_get_by_purpose_resource_and_state(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC,
TEST_CONN_STATE)
== conn);
tt_assert(connection_dir_get_by_purpose_resource_and_state(
!conn->base_.purpose,
"",
!conn->base_.state)
== NULL);
tt_assert(connection_dir_get_by_purpose_resource_and_state(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2,
!TEST_CONN_STATE)
== NULL);
sl_is_conn_assert(connection_dir_list_by_purpose_and_resource(
conn->base_.purpose,
conn->requested_resource),
conn);
sl_is_conn_assert(connection_dir_list_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC),
conn);
sl_no_conn_assert(connection_dir_list_by_purpose_and_resource(
!conn->base_.purpose,
""));
sl_no_conn_assert(connection_dir_list_by_purpose_and_resource(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2));
sl_is_conn_assert(connection_dir_list_by_purpose_resource_and_state(
conn->base_.purpose,
conn->requested_resource,
conn->base_.state),
conn);
sl_is_conn_assert(connection_dir_list_by_purpose_resource_and_state(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC,
TEST_CONN_STATE),
conn);
sl_no_conn_assert(connection_dir_list_by_purpose_resource_and_state(
!conn->base_.purpose,
"",
!conn->base_.state));
sl_no_conn_assert(connection_dir_list_by_purpose_resource_and_state(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2,
!TEST_CONN_STATE));
tt_assert(connection_dir_count_by_purpose_and_resource(
conn->base_.purpose,
conn->requested_resource)
== 1);
tt_assert(connection_dir_count_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC)
== 1);
tt_assert(connection_dir_count_by_purpose_and_resource(
!conn->base_.purpose,
"")
== 0);
tt_assert(connection_dir_count_by_purpose_and_resource(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2)
== 0);
tt_assert(connection_dir_count_by_purpose_resource_and_state(
conn->base_.purpose,
conn->requested_resource,
conn->base_.state)
== 1);
tt_assert(connection_dir_count_by_purpose_resource_and_state(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC,
TEST_CONN_STATE)
== 1);
tt_assert(connection_dir_count_by_purpose_resource_and_state(
!conn->base_.purpose,
"",
!conn->base_.state)
== 0);
tt_assert(connection_dir_count_by_purpose_resource_and_state(
!TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC_2,
!TEST_CONN_STATE)
== 0);
done:
;
}
static void
test_conn_download_status(void *arg)
{
(void)arg;
dir_connection_t *conn = NULL;
dir_connection_t *conn2 = NULL;
dir_connection_t *conn3 = NULL;
/* no connections, no excess, not downloading */
tt_assert(networkstatus_consensus_has_excess_connections() == 0);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 0);
/* one connection, no excess, not downloading */
conn = test_conn_download_status_add_a_connection();
tt_assert(networkstatus_consensus_has_excess_connections() == 0);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 0);
/* one connection, no excess, but downloading */
conn->base_.state = TEST_CONN_DL_STATE;
tt_assert(networkstatus_consensus_has_excess_connections() == 0);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 1);
conn->base_.state = TEST_CONN_STATE;
/* two connections, excess, but not downloading */
conn2 = test_conn_download_status_add_a_connection();
tt_assert(networkstatus_consensus_has_excess_connections() == 1);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 0);
/* two connections, excess, downloading */
conn2->base_.state = TEST_CONN_DL_STATE;
tt_assert(networkstatus_consensus_has_excess_connections() == 1);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 1);
conn2->base_.state = TEST_CONN_STATE;
/* more connections, excess, but not downloading */
conn3 = test_conn_download_status_add_a_connection();
tt_assert(networkstatus_consensus_has_excess_connections() == 1);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 0);
/* more connections, excess, downloading */
conn3->base_.state = TEST_CONN_DL_STATE;
tt_assert(networkstatus_consensus_has_excess_connections() == 1);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 1);
/* more connections, more downloading */
conn2->base_.state = TEST_CONN_DL_STATE;
tt_assert(networkstatus_consensus_has_excess_connections() == 1);
tt_assert(networkstatus_consensus_is_downloading_usable_flavor() == 1);
/* now try closing the one that isn't downloading:
* these tests won't work unless tor thinks it is bootstrapping */
tt_assert(networkstatus_consensus_is_boostrapping(time(NULL)));
tt_assert(connection_dir_count_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC) == 3);
tt_assert(connection_dir_close_consensus_conn_if_extra(conn) == -1);
tt_assert(connection_dir_count_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC) == 2);
/* now try closing one that is downloading - it stays open */
tt_assert(connection_dir_close_consensus_conn_if_extra(conn) == 0);
tt_assert(connection_dir_count_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC) == 2);
/* now try closing all excess connections */
connection_dir_close_extra_consensus_conns();
tt_assert(connection_dir_count_by_purpose_and_resource(
TEST_CONN_RSRC_PURPOSE,
TEST_CONN_RSRC) == 1);
done:
/* the teardown function removes all the connections */;
}
#define CONNECTION_TESTCASE(name, fork, setup) \
{ #name, test_conn_##name, fork, &setup, NULL }
struct testcase_t connection_tests[] = {
CONNECTION_TESTCASE(get_basic, TT_FORK, test_conn_get_basic_st),
CONNECTION_TESTCASE(get_rend, TT_FORK, test_conn_get_rend_st),
CONNECTION_TESTCASE(get_rsrc, TT_FORK, test_conn_get_rsrc_st),
CONNECTION_TESTCASE(download_status, TT_FORK, test_conn_download_status_st),
//CONNECTION_TESTCASE(func_suffix, TT_FORK, setup_func_pair),
END_OF_TESTCASES
};
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