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tor/src/test/test_hs_service.c

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/* Copyright (c) 2016-2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file test_hs_service.c
* \brief Test hidden service functionality.
*/
#define CIRCUITBUILD_PRIVATE
#define CIRCUITLIST_PRIVATE
#define CONFIG_PRIVATE
#define CONNECTION_PRIVATE
#define CRYPTO_PRIVATE
#define HS_COMMON_PRIVATE
#define HS_SERVICE_PRIVATE
#define HS_INTROPOINT_PRIVATE
#define HS_CIRCUIT_PRIVATE
#define MAIN_PRIVATE
#define NETWORKSTATUS_PRIVATE
#define STATEFILE_PRIVATE
#define TOR_CHANNEL_INTERNAL_
#define HS_CLIENT_PRIVATE
#define ROUTERPARSE_PRIVATE
#include "test.h"
#include "test_helpers.h"
#include "log_test_helpers.h"
#include "rend_test_helpers.h"
#include "hs_test_helpers.h"
#include "or.h"
#include "config.h"
#include "circuitbuild.h"
#include "circuitlist.h"
#include "circuituse.h"
#include "crypto_rand.h"
#include "dirauth/dirvote.h"
#include "networkstatus.h"
#include "nodelist.h"
#include "relay.h"
#include "routerparse.h"
#include "hs_common.h"
#include "hs_config.h"
#include "hs_ident.h"
#include "hs_intropoint.h"
#include "hs_ntor.h"
#include "hs_circuit.h"
#include "hs_service.h"
#include "hs_client.h"
#include "main.h"
#include "rendservice.h"
#include "statefile.h"
#include "dirauth/shared_random_state.h"
#include "voting_schedule.h"
/* Trunnel */
#include "hs/cell_establish_intro.h"
static networkstatus_t mock_ns;
static networkstatus_t *
mock_networkstatus_get_live_consensus(time_t now)
{
(void) now;
return &mock_ns;
}
static or_state_t *dummy_state = NULL;
/* Mock function to get fake or state (used for rev counters) */
static or_state_t *
get_or_state_replacement(void)
{
return dummy_state;
}
/* 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;
return;
}
static int
mock_relay_send_command_from_edge(streamid_t stream_id, circuit_t *circ,
uint8_t relay_command, const char *payload,
size_t payload_len,
crypt_path_t *cpath_layer,
const char *filename, int lineno)
{
(void) stream_id;
(void) circ;
(void) relay_command;
(void) payload;
(void) payload_len;
(void) cpath_layer;
(void) filename;
(void) lineno;
return 0;
}
/* Helper: from a set of options in conf, configure a service which will add
* it to the staging list of the HS subsytem. */
static int
helper_config_service(const char *conf)
{
int ret = 0;
or_options_t *options = NULL;
tt_assert(conf);
options = helper_parse_options(conf);
tt_assert(options);
ret = hs_config_service_all(options, 0);
done:
or_options_free(options);
return ret;
}
/* Test: Ensure that setting up rendezvous circuits works correctly. */
static void
test_e2e_rend_circuit_setup(void *arg)
{
ed25519_public_key_t service_pk;
origin_circuit_t *or_circ;
int retval;
/** In this test we create a v3 prop224 service-side rendezvous circuit.
* We simulate an HS ntor key exchange with a client, and check that
* the circuit was setup correctly and is ready to accept rendezvous data */
(void) arg;
/* Now make dummy circuit */
{
or_circ = origin_circuit_new();
or_circ->base_.purpose = CIRCUIT_PURPOSE_S_CONNECT_REND;
or_circ->build_state = tor_malloc_zero(sizeof(cpath_build_state_t));
or_circ->build_state->is_internal = 1;
/* prop224: Setup hs conn identifier on the stream */
ed25519_secret_key_t sk;
tt_int_op(0, OP_EQ, ed25519_secret_key_generate(&sk, 0));
tt_int_op(0, OP_EQ, ed25519_public_key_generate(&service_pk, &sk));
or_circ->hs_ident = hs_ident_circuit_new(&service_pk,
HS_IDENT_CIRCUIT_RENDEZVOUS);
TO_CIRCUIT(or_circ)->state = CIRCUIT_STATE_OPEN;
}
/* Check number of hops */
retval = cpath_get_n_hops(&or_circ->cpath);
tt_int_op(retval, OP_EQ, 0);
/* Setup the circuit: do the ntor key exchange */
{
uint8_t ntor_key_seed[DIGEST256_LEN] = {2};
retval = hs_circuit_setup_e2e_rend_circ(or_circ,
ntor_key_seed, sizeof(ntor_key_seed),
1);
tt_int_op(retval, OP_EQ, 0);
}
/* See that a hop was added to the circuit's cpath */
retval = cpath_get_n_hops(&or_circ->cpath);
tt_int_op(retval, OP_EQ, 1);
/* Check the digest algo */
tt_int_op(crypto_digest_get_algorithm(or_circ->cpath->crypto.f_digest),
OP_EQ, DIGEST_SHA3_256);
tt_int_op(crypto_digest_get_algorithm(or_circ->cpath->crypto.b_digest),
OP_EQ, DIGEST_SHA3_256);
tt_assert(or_circ->cpath->crypto.f_crypto);
tt_assert(or_circ->cpath->crypto.b_crypto);
/* Ensure that circ purpose was changed */
tt_int_op(or_circ->base_.purpose, OP_EQ, CIRCUIT_PURPOSE_S_REND_JOINED);
done:
circuit_free_(TO_CIRCUIT(or_circ));
}
/* Helper: Return a newly allocated and initialized origin circuit with
* purpose and flags. A default HS identifier is set to an ed25519
* authentication key for introduction point. */
static origin_circuit_t *
helper_create_origin_circuit(int purpose, int flags)
{
origin_circuit_t *circ = NULL;
circ = origin_circuit_init(purpose, flags);
tor_assert(circ);
circ->cpath = tor_malloc_zero(sizeof(crypt_path_t));
circ->cpath->magic = CRYPT_PATH_MAGIC;
circ->cpath->state = CPATH_STATE_OPEN;
circ->cpath->package_window = circuit_initial_package_window();
circ->cpath->deliver_window = CIRCWINDOW_START;
circ->cpath->prev = circ->cpath;
/* Random nonce. */
crypto_rand(circ->cpath->prev->rend_circ_nonce, DIGEST_LEN);
/* Create a default HS identifier. */
circ->hs_ident = tor_malloc_zero(sizeof(hs_ident_circuit_t));
return circ;
}
/* Helper: Return a newly allocated service object with the identity keypair
* sets and the current descriptor. Then register it to the global map.
* Caller should us hs_free_all() to free this service or remove it from the
* global map before freeing. */
static hs_service_t *
helper_create_service(void)
{
/* Set a service for this circuit. */
hs_service_t *service = hs_service_new(get_options());
tor_assert(service);
service->config.version = HS_VERSION_THREE;
ed25519_secret_key_generate(&service->keys.identity_sk, 0);
ed25519_public_key_generate(&service->keys.identity_pk,
&service->keys.identity_sk);
service->desc_current = service_descriptor_new();
tt_assert(service->desc_current);
/* Register service to global map. */
int ret = register_service(get_hs_service_map(), service);
tt_int_op(ret, OP_EQ, 0);
done:
return service;
}
/* Helper: Return a newly allocated service intro point with two link
* specifiers, one IPv4 and one legacy ID set to As. */
static hs_service_intro_point_t *
helper_create_service_ip(void)
{
hs_desc_link_specifier_t *ls;
hs_service_intro_point_t *ip = service_intro_point_new(NULL, 0);
tor_assert(ip);
/* Add a first unused link specifier. */
ls = tor_malloc_zero(sizeof(*ls));
ls->type = LS_IPV4;
smartlist_add(ip->base.link_specifiers, ls);
/* Add a second link specifier used by a test. */
ls = tor_malloc_zero(sizeof(*ls));
ls->type = LS_LEGACY_ID;
memset(ls->u.legacy_id, 'A', sizeof(ls->u.legacy_id));
smartlist_add(ip->base.link_specifiers, ls);
return ip;
}
static void
test_load_keys(void *arg)
{
int ret;
char *conf = NULL;
char *hsdir_v2 = tor_strdup(get_fname("hs2"));
char *hsdir_v3 = tor_strdup(get_fname("hs3"));
char addr[HS_SERVICE_ADDR_LEN_BASE32 + 1];
(void) arg;
/* We'll register two services, a v2 and a v3, then we'll load keys and
* validate that both are in a correct state. */
hs_init();
#define conf_fmt \
"HiddenServiceDir %s\n" \
"HiddenServiceVersion %d\n" \
"HiddenServicePort 65535\n"
/* v2 service. */
tor_asprintf(&conf, conf_fmt, hsdir_v2, HS_VERSION_TWO);
ret = helper_config_service(conf);
tor_free(conf);
tt_int_op(ret, OP_EQ, 0);
/* This one should now be registered into the v2 list. */
tt_int_op(get_hs_service_staging_list_size(), OP_EQ, 0);
tt_int_op(rend_num_services(), OP_EQ, 1);
/* v3 service. */
tor_asprintf(&conf, conf_fmt, hsdir_v3, HS_VERSION_THREE);
ret = helper_config_service(conf);
tor_free(conf);
tt_int_op(ret, OP_EQ, 0);
/* It's in staging? */
tt_int_op(get_hs_service_staging_list_size(), OP_EQ, 1);
/* Load the keys for these. After that, the v3 service should be registered
* in the global map. */
hs_service_load_all_keys();
tt_int_op(get_hs_service_map_size(), OP_EQ, 1);
hs_service_t *s = get_first_service();
tt_assert(s);
/* Ok we have the service object. Validate few things. */
tt_assert(!tor_mem_is_zero(s->onion_address, sizeof(s->onion_address)));
tt_int_op(hs_address_is_valid(s->onion_address), OP_EQ, 1);
tt_assert(!tor_mem_is_zero((char *) s->keys.identity_sk.seckey,
ED25519_SECKEY_LEN));
tt_assert(!tor_mem_is_zero((char *) s->keys.identity_pk.pubkey,
ED25519_PUBKEY_LEN));
/* Check onion address from identity key. */
hs_build_address(&s->keys.identity_pk, s->config.version, addr);
tt_int_op(hs_address_is_valid(addr), OP_EQ, 1);
tt_str_op(addr, OP_EQ, s->onion_address);
done:
tor_free(hsdir_v2);
tor_free(hsdir_v3);
hs_free_all();
}
static void
test_access_service(void *arg)
{
int ret;
char *conf = NULL;
char *hsdir_v3 = tor_strdup(get_fname("hs3"));
hs_service_ht *global_map;
hs_service_t *s = NULL;
(void) arg;
/* We'll register two services, a v2 and a v3, then we'll load keys and
* validate that both are in a correct state. */
hs_init();
#define conf_fmt \
"HiddenServiceDir %s\n" \
"HiddenServiceVersion %d\n" \
"HiddenServicePort 65535\n"
/* v3 service. */
tor_asprintf(&conf, conf_fmt, hsdir_v3, HS_VERSION_THREE);
ret = helper_config_service(conf);
tor_free(conf);
tt_int_op(ret, OP_EQ, 0);
/* It's in staging? */
tt_int_op(get_hs_service_staging_list_size(), OP_EQ, 1);
/* Load the keys for these. After that, the v3 service should be registered
* in the global map. */
hs_service_load_all_keys();
tt_int_op(get_hs_service_map_size(), OP_EQ, 1);
s = get_first_service();
tt_assert(s);
global_map = get_hs_service_map();
tt_assert(global_map);
/* From here, we'll try the service accessors. */
hs_service_t *query = find_service(global_map, &s->keys.identity_pk);
tt_assert(query);
tt_mem_op(query, OP_EQ, s, sizeof(hs_service_t));
/* Remove service, check if it actually works and then put it back. */
remove_service(global_map, s);
tt_int_op(get_hs_service_map_size(), OP_EQ, 0);
query = find_service(global_map, &s->keys.identity_pk);
tt_ptr_op(query, OP_EQ, NULL);
/* Register back the service in the map. */
ret = register_service(global_map, s);
tt_int_op(ret, OP_EQ, 0);
tt_int_op(get_hs_service_map_size(), OP_EQ, 1);
/* Twice should fail. */
ret = register_service(global_map, s);
tt_int_op(ret, OP_EQ, -1);
/* Remove service from map so we don't double free on cleanup. */
remove_service(global_map, s);
tt_int_op(get_hs_service_map_size(), OP_EQ, 0);
query = find_service(global_map, &s->keys.identity_pk);
tt_ptr_op(query, OP_EQ, NULL);
/* Let's try to remove twice for fun. */
setup_full_capture_of_logs(LOG_WARN);
remove_service(global_map, s);
expect_log_msg_containing("Could not find service in the global map");
teardown_capture_of_logs();
done:
hs_service_free(s);
tor_free(hsdir_v3);
hs_free_all();
}
/** Test that we can create intro point objects, index them and find them */
static void
test_service_intro_point(void *arg)
{
hs_service_t *service = NULL;
hs_service_intro_point_t *ip = NULL;
(void) arg;
/* Test simple creation of an object. */
{
time_t now = time(NULL);
ip = helper_create_service_ip();
tt_assert(ip);
/* Make sure the authentication keypair is not zeroes. */
tt_int_op(tor_mem_is_zero((const char *) &ip->auth_key_kp,
sizeof(ed25519_keypair_t)), OP_EQ, 0);
/* The introduce2_max MUST be in that range. */
tt_u64_op(ip->introduce2_max, OP_GE,
INTRO_POINT_MIN_LIFETIME_INTRODUCTIONS);
tt_u64_op(ip->introduce2_max, OP_LE,
INTRO_POINT_MAX_LIFETIME_INTRODUCTIONS);
/* Time to expire MUST also be in that range. We subtract 500 seconds
* because there could be a gap between setting now and the time taken in
* service_intro_point_new. On ARM and other older CPUs, it can be
* surprisingly slow... */
tt_u64_op(ip->time_to_expire, OP_GE,
now + INTRO_POINT_LIFETIME_MIN_SECONDS - 500);
/* We add 500 seconds, because this time we're testing against the
* maximum allowed time. */
tt_u64_op(ip->time_to_expire, OP_LE,
now + INTRO_POINT_LIFETIME_MAX_SECONDS + 500);
tt_assert(ip->replay_cache);
tt_assert(ip->base.link_specifiers);
/* By default, this is NOT a legacy object. */
tt_int_op(ip->base.is_only_legacy, OP_EQ, 0);
}
/* Test functions that uses a service intropoints map with that previously
* created object (non legacy). */
{
ed25519_public_key_t garbage = { {0} };
hs_service_intro_point_t *query;
service = hs_service_new(get_options());
tt_assert(service);
service->desc_current = service_descriptor_new();
tt_assert(service->desc_current);
/* Add intropoint to descriptor map. */
service_intro_point_add(service->desc_current->intro_points.map, ip);
query = service_intro_point_find(service, &ip->auth_key_kp.pubkey);
tt_mem_op(query, OP_EQ, ip, sizeof(hs_service_intro_point_t));
query = service_intro_point_find(service, &garbage);
tt_ptr_op(query, OP_EQ, NULL);
/* While at it, can I find the descriptor with the intro point? */
hs_service_descriptor_t *desc_lookup =
service_desc_find_by_intro(service, ip);
tt_mem_op(service->desc_current, OP_EQ, desc_lookup,
sizeof(hs_service_descriptor_t));
/* Remove object from service descriptor and make sure it is out. */
service_intro_point_remove(service, ip);
query = service_intro_point_find(service, &ip->auth_key_kp.pubkey);
tt_ptr_op(query, OP_EQ, NULL);
}
done:
/* If the test succeed, this object is no longer referenced in the service
* so we can free it without use after free. Else, it might explode because
* it's still in the service descriptor map. */
service_intro_point_free(ip);
hs_service_free(service);
}
static node_t mock_node;
static const node_t *
mock_node_get_by_id(const char *digest)
{
(void) digest;
memset(mock_node.identity, 'A', DIGEST_LEN);
/* Only return the matchin identity of As */
if (!tor_memcmp(mock_node.identity, digest, DIGEST_LEN)) {
return &mock_node;
}
return NULL;
}
static void
test_helper_functions(void *arg)
{
int ret;
hs_service_t *service = NULL;
hs_service_intro_point_t *ip = NULL;
hs_ident_circuit_t ident;
(void) arg;
MOCK(node_get_by_id, mock_node_get_by_id);
hs_service_init();
service = helper_create_service();
ip = helper_create_service_ip();
/* Immediately add the intro point to the service so the free service at the
* end cleans it as well. */
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* Setup the circuit identifier. */
ed25519_pubkey_copy(&ident.intro_auth_pk, &ip->auth_key_kp.pubkey);
ed25519_pubkey_copy(&ident.identity_pk, &service->keys.identity_pk);
/* Testing get_objects_from_ident(). */
{
hs_service_t *s_lookup = NULL;
hs_service_intro_point_t *ip_lookup = NULL;
hs_service_descriptor_t *desc_lookup = NULL;
get_objects_from_ident(&ident, &s_lookup, &ip_lookup, &desc_lookup);
tt_mem_op(s_lookup, OP_EQ, service, sizeof(hs_service_t));
tt_mem_op(ip_lookup, OP_EQ, ip, sizeof(hs_service_intro_point_t));
tt_mem_op(desc_lookup, OP_EQ, service->desc_current,
sizeof(hs_service_descriptor_t));
/* Reset */
s_lookup = NULL; ip_lookup = NULL; desc_lookup = NULL;
/* NULL parameter should work. */
get_objects_from_ident(&ident, NULL, &ip_lookup, &desc_lookup);
tt_mem_op(ip_lookup, OP_EQ, ip, sizeof(hs_service_intro_point_t));
tt_mem_op(desc_lookup, OP_EQ, service->desc_current,
sizeof(hs_service_descriptor_t));
/* Reset. */
s_lookup = NULL; ip_lookup = NULL; desc_lookup = NULL;
/* Break the ident and we should find nothing. */
memset(&ident, 0, sizeof(ident));
get_objects_from_ident(&ident, &s_lookup, &ip_lookup, &desc_lookup);
tt_ptr_op(s_lookup, OP_EQ, NULL);
tt_ptr_op(ip_lookup, OP_EQ, NULL);
tt_ptr_op(desc_lookup, OP_EQ, NULL);
}
/* Testing get_node_from_intro_point() */
{
const node_t *node = get_node_from_intro_point(ip);
tt_ptr_op(node, OP_EQ, &mock_node);
SMARTLIST_FOREACH_BEGIN(ip->base.link_specifiers,
hs_desc_link_specifier_t *, ls) {
if (ls->type == LS_LEGACY_ID) {
/* Change legacy id in link specifier which is not the mock node. */
memset(ls->u.legacy_id, 'B', sizeof(ls->u.legacy_id));
}
} SMARTLIST_FOREACH_END(ls);
node = get_node_from_intro_point(ip);
tt_ptr_op(node, OP_EQ, NULL);
}
/* Testing can_service_launch_intro_circuit() */
{
time_t now = time(NULL);
/* Put the start of the retry period back in time, we should be allowed.
* to launch intro circuit. */
service->state.num_intro_circ_launched = 2;
service->state.intro_circ_retry_started_time =
(now - INTRO_CIRC_RETRY_PERIOD - 1);
ret = can_service_launch_intro_circuit(service, now);
tt_int_op(ret, OP_EQ, 1);
tt_u64_op(service->state.intro_circ_retry_started_time, OP_EQ, now);
tt_u64_op(service->state.num_intro_circ_launched, OP_EQ, 0);
/* Call it again, we should still be allowed because we are under
* MAX_INTRO_CIRCS_PER_PERIOD which been set to 0 previously. */
ret = can_service_launch_intro_circuit(service, now);
tt_int_op(ret, OP_EQ, 1);
tt_u64_op(service->state.intro_circ_retry_started_time, OP_EQ, now);
tt_u64_op(service->state.num_intro_circ_launched, OP_EQ, 0);
/* Too many intro circuit launched means we are not allowed. */
service->state.num_intro_circ_launched = 20;
ret = can_service_launch_intro_circuit(service, now);
tt_int_op(ret, OP_EQ, 0);
}
/* Testing intro_point_should_expire(). */
{
time_t now = time(NULL);
/* Just some basic test of the current state. */
tt_u64_op(ip->introduce2_max, OP_GE,
INTRO_POINT_MIN_LIFETIME_INTRODUCTIONS);
tt_u64_op(ip->introduce2_max, OP_LE,
INTRO_POINT_MAX_LIFETIME_INTRODUCTIONS);
tt_u64_op(ip->time_to_expire, OP_GE,
now + INTRO_POINT_LIFETIME_MIN_SECONDS);
tt_u64_op(ip->time_to_expire, OP_LE,
now + INTRO_POINT_LIFETIME_MAX_SECONDS);
/* This newly created IP from above shouldn't expire now. */
ret = intro_point_should_expire(ip, now);
tt_int_op(ret, OP_EQ, 0);
/* Maximum number of INTRODUCE2 cell reached, it should expire. */
ip->introduce2_count = INTRO_POINT_MAX_LIFETIME_INTRODUCTIONS + 1;
ret = intro_point_should_expire(ip, now);
tt_int_op(ret, OP_EQ, 1);
ip->introduce2_count = 0;
/* It should expire if time to expire has been reached. */
ip->time_to_expire = now - 1000;
ret = intro_point_should_expire(ip, now);
tt_int_op(ret, OP_EQ, 1);
}
done:
/* This will free the service and all objects associated to it. */
hs_service_free_all();
UNMOCK(node_get_by_id);
}
/** Test that we do the right operations when an intro circuit opens */
static void
test_intro_circuit_opened(void *arg)
{
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
hs_service_t *service;
origin_circuit_t *circ = NULL;
(void) arg;
hs_init();
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
MOCK(relay_send_command_from_edge_, mock_relay_send_command_from_edge);
circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_ESTABLISH_INTRO,
flags);
/* No service associated with this circuit. */
setup_full_capture_of_logs(LOG_WARN);
hs_service_circuit_has_opened(circ);
expect_log_msg_containing("Unknown service identity key");
teardown_capture_of_logs();
/* Set a service for this circuit. */
{
service = helper_create_service();
ed25519_pubkey_copy(&circ->hs_ident->identity_pk,
&service->keys.identity_pk);
/* No intro point associated with this circuit. */
setup_full_capture_of_logs(LOG_WARN);
hs_service_circuit_has_opened(circ);
expect_log_msg_containing("Unknown introduction point auth key");
teardown_capture_of_logs();
}
/* Set an IP object now for this circuit. */
{
hs_service_intro_point_t *ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* Update ident to contain the intro point auth key. */
ed25519_pubkey_copy(&circ->hs_ident->intro_auth_pk,
&ip->auth_key_kp.pubkey);
}
/* This one should go all the way. */
setup_full_capture_of_logs(LOG_INFO);
hs_service_circuit_has_opened(circ);
expect_log_msg_containing("Introduction circuit 0 established for service");
teardown_capture_of_logs();
done:
circuit_free_(TO_CIRCUIT(circ));
hs_free_all();
UNMOCK(circuit_mark_for_close_);
UNMOCK(relay_send_command_from_edge_);
}
/** Test the operations we do on a circuit after we learn that we successfully
* established an intro point on it */
static void
test_intro_established(void *arg)
{
int ret;
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
uint8_t payload[RELAY_PAYLOAD_SIZE] = {0};
origin_circuit_t *circ = NULL;
hs_service_t *service;
hs_service_intro_point_t *ip = NULL;
(void) arg;
hs_init();
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_ESTABLISH_INTRO,
flags);
tt_assert(circ);
/* Test a wrong purpose. */
TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_S_INTRO;
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_intro_established(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Received an INTRO_ESTABLISHED cell on a "
"non introduction circuit of purpose");
teardown_capture_of_logs();
/* Back to normal. */
TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_S_ESTABLISH_INTRO;
/* No service associated to it. */
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_intro_established(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Unknown service identity key");
teardown_capture_of_logs();
/* Set a service for this circuit. */
service = helper_create_service();
ed25519_pubkey_copy(&circ->hs_ident->identity_pk,
&service->keys.identity_pk);
/* No introduction point associated to it. */
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_intro_established(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Introduction circuit established without an "
"intro point object on circuit");
teardown_capture_of_logs();
/* Set an IP object now for this circuit. */
{
ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* Update ident to contain the intro point auth key. */
ed25519_pubkey_copy(&circ->hs_ident->intro_auth_pk,
&ip->auth_key_kp.pubkey);
}
/* Send an empty payload. INTRO_ESTABLISHED cells are basically zeroes. */
ret = hs_service_receive_intro_established(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, 0);
tt_u64_op(ip->circuit_established, OP_EQ, 1);
tt_int_op(TO_CIRCUIT(circ)->purpose, OP_EQ, CIRCUIT_PURPOSE_S_INTRO);
done:
if (circ)
circuit_free_(TO_CIRCUIT(circ));
hs_free_all();
UNMOCK(circuit_mark_for_close_);
}
/** Check the operations we do on a rendezvous circuit after we learn it's
* open */
static void
test_rdv_circuit_opened(void *arg)
{
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
origin_circuit_t *circ = NULL;
hs_service_t *service;
(void) arg;
hs_init();
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
MOCK(relay_send_command_from_edge_, mock_relay_send_command_from_edge);
circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_CONNECT_REND, flags);
crypto_rand((char *) circ->hs_ident->rendezvous_cookie, REND_COOKIE_LEN);
crypto_rand((char *) circ->hs_ident->rendezvous_handshake_info,
sizeof(circ->hs_ident->rendezvous_handshake_info));
/* No service associated with this circuit. */
setup_full_capture_of_logs(LOG_WARN);
hs_service_circuit_has_opened(circ);
expect_log_msg_containing("Unknown service identity key");
teardown_capture_of_logs();
/* This should be set to a non zero timestamp. */
tt_u64_op(TO_CIRCUIT(circ)->timestamp_dirty, OP_NE, 0);
/* Set a service for this circuit. */
service = helper_create_service();
ed25519_pubkey_copy(&circ->hs_ident->identity_pk,
&service->keys.identity_pk);
/* Should be all good. */
hs_service_circuit_has_opened(circ);
tt_int_op(TO_CIRCUIT(circ)->purpose, OP_EQ, CIRCUIT_PURPOSE_S_REND_JOINED);
done:
circuit_free_(TO_CIRCUIT(circ));
hs_free_all();
UNMOCK(circuit_mark_for_close_);
UNMOCK(relay_send_command_from_edge_);
}
static void
mock_assert_circuit_ok(const circuit_t *c)
{
(void) c;
return;
}
/** Test for the general mechanism for closing intro circs.
* Also a way to identify that #23603 has been fixed. */
static void
test_closing_intro_circs(void *arg)
{
hs_service_t *service = NULL;
hs_service_intro_point_t *ip = NULL, *entry = NULL;
origin_circuit_t *intro_circ = NULL, *tmp_circ;
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
(void) arg;
MOCK(assert_circuit_ok, mock_assert_circuit_ok);
hs_init();
/* Initialize service */
service = helper_create_service();
/* Initialize intro point */
ip = helper_create_service_ip();
tt_assert(ip);
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* Initialize intro circuit */
intro_circ = origin_circuit_init(CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, flags);
intro_circ->hs_ident = hs_ident_circuit_new(&service->keys.identity_pk,
HS_IDENT_CIRCUIT_INTRO);
/* Register circuit in the circuitmap . */
hs_circuitmap_register_intro_circ_v3_service_side(intro_circ,
&ip->auth_key_kp.pubkey);
tmp_circ =
hs_circuitmap_get_intro_circ_v3_service_side(&ip->auth_key_kp.pubkey);
tt_ptr_op(tmp_circ, OP_EQ, intro_circ);
/* Pretend that intro point has failed too much */
ip->circuit_retries = MAX_INTRO_POINT_CIRCUIT_RETRIES+1;
/* Now pretend we are freeing this intro circuit. We want to see that our
* destructor is not gonna kill our intro point structure since that's the
* job of the cleanup routine. */
circuit_free_(TO_CIRCUIT(intro_circ));
intro_circ = NULL;
entry = service_intro_point_find(service, &ip->auth_key_kp.pubkey);
tt_assert(entry);
/* The free should also remove the circuit from the circuitmap. */
tmp_circ =
hs_circuitmap_get_intro_circ_v3_service_side(&ip->auth_key_kp.pubkey);
tt_assert(!tmp_circ);
/* Now pretend that a new intro point circ was launched and opened. Check
* that the intro point will be established correctly. */
intro_circ = origin_circuit_init(CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, flags);
intro_circ->hs_ident = hs_ident_circuit_new(&service->keys.identity_pk,
HS_IDENT_CIRCUIT_INTRO);
ed25519_pubkey_copy(&intro_circ->hs_ident->intro_auth_pk,
&ip->auth_key_kp.pubkey);
/* Register circuit in the circuitmap . */
hs_circuitmap_register_intro_circ_v3_service_side(intro_circ,
&ip->auth_key_kp.pubkey);
tmp_circ =
hs_circuitmap_get_intro_circ_v3_service_side(&ip->auth_key_kp.pubkey);
tt_ptr_op(tmp_circ, OP_EQ, intro_circ);
tt_int_op(TO_CIRCUIT(intro_circ)->marked_for_close, OP_EQ, 0);
circuit_mark_for_close(TO_CIRCUIT(intro_circ), END_CIRC_REASON_INTERNAL);
tt_int_op(TO_CIRCUIT(intro_circ)->marked_for_close, OP_NE, 0);
/* At this point, we should not be able to find it in the circuitmap. */
tmp_circ =
hs_circuitmap_get_intro_circ_v3_service_side(&ip->auth_key_kp.pubkey);
tt_assert(!tmp_circ);
done:
if (intro_circ) {
circuit_free_(TO_CIRCUIT(intro_circ));
}
/* Frees the service object. */
hs_free_all();
UNMOCK(assert_circuit_ok);
}
/** Test sending and receiving introduce2 cells */
static void
test_introduce2(void *arg)
{
int ret;
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
uint8_t payload[RELAY_PAYLOAD_SIZE] = {0};
origin_circuit_t *circ = NULL;
hs_service_t *service;
hs_service_intro_point_t *ip = NULL;
(void) arg;
hs_init();
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
MOCK(get_or_state,
get_or_state_replacement);
dummy_state = tor_malloc_zero(sizeof(or_state_t));
circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_INTRO, flags);
tt_assert(circ);
/* Test a wrong purpose. */
TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_S_ESTABLISH_INTRO;
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_introduce2(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Received an INTRODUCE2 cell on a "
"non introduction circuit of purpose");
teardown_capture_of_logs();
/* Back to normal. */
TO_CIRCUIT(circ)->purpose = CIRCUIT_PURPOSE_S_INTRO;
/* No service associated to it. */
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_introduce2(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Unknown service identity key");
teardown_capture_of_logs();
/* Set a service for this circuit. */
service = helper_create_service();
ed25519_pubkey_copy(&circ->hs_ident->identity_pk,
&service->keys.identity_pk);
/* No introduction point associated to it. */
setup_full_capture_of_logs(LOG_WARN);
ret = hs_service_receive_introduce2(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
expect_log_msg_containing("Unknown introduction auth key when handling "
"an INTRODUCE2 cell on circuit");
teardown_capture_of_logs();
/* Set an IP object now for this circuit. */
{
ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* Update ident to contain the intro point auth key. */
ed25519_pubkey_copy(&circ->hs_ident->intro_auth_pk,
&ip->auth_key_kp.pubkey);
}
/* This will fail because receiving an INTRODUCE2 cell implies a valid cell
* and then launching circuits so let's not do that and instead test that
* behaviour differently. */
ret = hs_service_receive_introduce2(circ, payload, sizeof(payload));
tt_int_op(ret, OP_EQ, -1);
tt_u64_op(ip->introduce2_count, OP_EQ, 0);
done:
or_state_free(dummy_state);
dummy_state = NULL;
if (circ)
circuit_free_(TO_CIRCUIT(circ));
hs_free_all();
UNMOCK(circuit_mark_for_close_);
}
/** Test basic hidden service housekeeping operations (maintaining intro
* points, etc) */
static void
test_service_event(void *arg)
{
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
time_t now = time(NULL);
hs_service_t *service;
origin_circuit_t *circ = NULL;
(void) arg;
hs_init();
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_INTRO, flags);
/* Set a service for this circuit. */
service = helper_create_service();
ed25519_pubkey_copy(&circ->hs_ident->identity_pk,
&service->keys.identity_pk);
/* Currently this consists of cleaning invalid intro points. So adding IPs
* here that should get cleaned up. */
{
hs_service_intro_point_t *ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
/* This run will remove the IP because we have no circuits nor node_t
* associated with it. */
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 0);
/* We'll trigger a removal because we've reached our maximum amount of
* times we should retry a circuit. For this, we need to have a node_t
* that matches the identity of this IP. */
routerinfo_t ri;
memset(&ri, 0, sizeof(ri));
ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
memset(ri.cache_info.identity_digest, 'A', DIGEST_LEN);
/* This triggers a node_t creation. */
tt_assert(nodelist_set_routerinfo(&ri, NULL));
ip->circuit_retries = MAX_INTRO_POINT_CIRCUIT_RETRIES + 1;
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 0);
/* No removal but no circuit so this means the IP object will stay in the
* descriptor map so we can retry it. */
ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
ip->circuit_established = 1; /* We'll test that, it MUST be 0 after. */
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 1);
/* Remove the IP object at once for the next test. */
ip->circuit_retries = MAX_INTRO_POINT_CIRCUIT_RETRIES + 1;
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 0);
/* Now, we'll create an IP with a registered circuit. The IP object
* shouldn't go away. */
ip = helper_create_service_ip();
service_intro_point_add(service->desc_current->intro_points.map, ip);
ed25519_pubkey_copy(&circ->hs_ident->intro_auth_pk,
&ip->auth_key_kp.pubkey);
hs_circuitmap_register_intro_circ_v3_service_side(
circ, &ip->auth_key_kp.pubkey);
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 1);
/* We'll mangle the IP object to expire. */
ip->time_to_expire = now;
run_housekeeping_event(now);
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 0);
}
done:
hs_circuitmap_remove_circuit(TO_CIRCUIT(circ));
circuit_free_(TO_CIRCUIT(circ));
hs_free_all();
UNMOCK(circuit_mark_for_close_);
}
/** Test that we rotate descriptors correctly. */
static void
test_rotate_descriptors(void *arg)
{
int ret;
time_t next_rotation_time, now = time(NULL);
hs_service_t *service;
hs_service_descriptor_t *desc_next;
(void) arg;
dummy_state = tor_malloc_zero(sizeof(or_state_t));
hs_init();
MOCK(get_or_state, get_or_state_replacement);
MOCK(circuit_mark_for_close_, mock_circuit_mark_for_close);
MOCK(networkstatus_get_live_consensus,
mock_networkstatus_get_live_consensus);
/* Descriptor rotation happens with a consensus with a new SRV. */
ret = parse_rfc1123_time("Sat, 26 Oct 1985 13:00:00 UTC",
&mock_ns.valid_after);
tt_int_op(ret, OP_EQ, 0);
ret = parse_rfc1123_time("Sat, 26 Oct 1985 14:00:00 UTC",
&mock_ns.fresh_until);
tt_int_op(ret, OP_EQ, 0);
voting_schedule_recalculate_timing(get_options(), mock_ns.valid_after);
/* Create a service with a default descriptor and state. It's added to the
* global map. */
service = helper_create_service();
service_descriptor_free(service->desc_current);
service->desc_current = NULL;
/* This triggers a build for both descriptors. The time now is only used in
* the descriptor certificate which is important to be now else the decoding
* will complain that the cert has expired if we use valid_after. */
build_all_descriptors(now);
tt_assert(service->desc_current);
tt_assert(service->desc_next);
/* Tweak our service next rotation time so we can use a custom time. */
service->state.next_rotation_time = next_rotation_time =
mock_ns.valid_after + (11 * 60 * 60);
/* Nothing should happen, we are not at a new SRV. Our next rotation time
* should be untouched. */
rotate_all_descriptors(mock_ns.valid_after);
tt_u64_op(service->state.next_rotation_time, OP_EQ, next_rotation_time);
tt_assert(service->desc_current);
tt_assert(service->desc_next);
tt_u64_op(service->desc_current->time_period_num, OP_EQ,
hs_get_previous_time_period_num(0));
tt_u64_op(service->desc_next->time_period_num, OP_EQ,
hs_get_time_period_num(0));
/* Keep a reference so we can compare it after rotation to the current. */
desc_next = service->desc_next;
/* Going right after a new SRV. */
ret = parse_rfc1123_time("Sat, 27 Oct 1985 01:00:00 UTC",
&mock_ns.valid_after);
tt_int_op(ret, OP_EQ, 0);
ret = parse_rfc1123_time("Sat, 27 Oct 1985 02:00:00 UTC",
&mock_ns.fresh_until);
tt_int_op(ret, OP_EQ, 0);
voting_schedule_recalculate_timing(get_options(), mock_ns.valid_after);
/* Note down what to expect for the next rotation time which is 01:00 + 23h
* meaning 00:00:00. */
next_rotation_time = mock_ns.valid_after + (23 * 60 * 60);
/* We should have our next rotation time modified, our current descriptor
* cleaned up and the next descriptor becoming the current. */
rotate_all_descriptors(mock_ns.valid_after);
tt_u64_op(service->state.next_rotation_time, OP_EQ, next_rotation_time);
tt_mem_op(service->desc_current, OP_EQ, desc_next, sizeof(*desc_next));
tt_assert(service->desc_next == NULL);
/* A second time should do nothing. */
rotate_all_descriptors(mock_ns.valid_after);
tt_u64_op(service->state.next_rotation_time, OP_EQ, next_rotation_time);
tt_mem_op(service->desc_current, OP_EQ, desc_next, sizeof(*desc_next));
tt_assert(service->desc_next == NULL);
build_all_descriptors(now);
tt_mem_op(service->desc_current, OP_EQ, desc_next, sizeof(*desc_next));
tt_u64_op(service->desc_current->time_period_num, OP_EQ,
hs_get_time_period_num(0));
tt_u64_op(service->desc_next->time_period_num, OP_EQ,
hs_get_next_time_period_num(0));
tt_assert(service->desc_next);
done:
hs_free_all();
UNMOCK(get_or_state);
UNMOCK(circuit_mark_for_close_);
UNMOCK(networkstatus_get_live_consensus);
}
/** Test building descriptors: picking intro points, setting up their link
* specifiers, etc. */
static void
test_build_update_descriptors(void *arg)
{
int ret;
time_t now = time(NULL);
node_t *node;
hs_service_t *service;
hs_service_intro_point_t *ip_cur, *ip_next;
routerinfo_t ri;
(void) arg;
hs_init();
MOCK(get_or_state,
get_or_state_replacement);
MOCK(networkstatus_get_live_consensus,
mock_networkstatus_get_live_consensus);
dummy_state = tor_malloc_zero(sizeof(or_state_t));
ret = parse_rfc1123_time("Sat, 26 Oct 1985 03:00:00 UTC",
&mock_ns.valid_after);
tt_int_op(ret, OP_EQ, 0);
ret = parse_rfc1123_time("Sat, 26 Oct 1985 04:00:00 UTC",
&mock_ns.fresh_until);
tt_int_op(ret, OP_EQ, 0);
voting_schedule_recalculate_timing(get_options(), mock_ns.valid_after);
/* Create a service without a current descriptor to trigger a build. */
service = helper_create_service();
tt_assert(service);
/* Unfortunately, the helper creates a dummy descriptor so get rid of it. */
service_descriptor_free(service->desc_current);
service->desc_current = NULL;
/* We have a fresh service so this should trigger a build for both
* descriptors for specific time period that we'll test. */
build_all_descriptors(now);
/* Check *current* descriptor. */
tt_assert(service->desc_current);
tt_assert(service->desc_current->desc);
tt_assert(service->desc_current->intro_points.map);
/* The current time period is the one expected when starting at 03:00. */
tt_u64_op(service->desc_current->time_period_num, OP_EQ,
hs_get_time_period_num(0));
/* This should be untouched, the update descriptor process changes it. */
tt_u64_op(service->desc_current->next_upload_time, OP_EQ, 0);
/* Check *next* descriptor. */
tt_assert(service->desc_next);
tt_assert(service->desc_next->desc);
tt_assert(service->desc_next->intro_points.map);
tt_assert(service->desc_current != service->desc_next);
tt_u64_op(service->desc_next->time_period_num, OP_EQ,
hs_get_next_time_period_num(0));
/* This should be untouched, the update descriptor process changes it. */
tt_u64_op(service->desc_next->next_upload_time, OP_EQ, 0);
/* Time to test the update of those descriptors. At first, we have no node
* in the routerlist so this will find NO suitable node for the IPs. */
setup_full_capture_of_logs(LOG_INFO);
update_all_descriptors(now);
expect_log_msg_containing("Unable to find a suitable node to be an "
"introduction point for service");
teardown_capture_of_logs();
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 0);
tt_int_op(digest256map_size(service->desc_next->intro_points.map),
OP_EQ, 0);
/* Now, we'll setup a node_t. */
{
tor_addr_t ipv4_addr;
curve25519_secret_key_t curve25519_secret_key;
memset(&ri, 0, sizeof(routerinfo_t));
tor_addr_parse(&ipv4_addr, "127.0.0.1");
ri.addr = tor_addr_to_ipv4h(&ipv4_addr);
ri.or_port = 1337;
ri.purpose = ROUTER_PURPOSE_GENERAL;
/* Ugly yes but we never free the "ri" object so this just makes things
* easier. */
ri.protocol_list = (char *) "HSDir=1-2 LinkAuth=3";
summarize_protover_flags(&ri.pv, ri.protocol_list, NULL);
ret = curve25519_secret_key_generate(&curve25519_secret_key, 0);
tt_int_op(ret, OP_EQ, 0);
ri.onion_curve25519_pkey =
tor_malloc_zero(sizeof(curve25519_public_key_t));
ri.onion_pkey = crypto_pk_new();
curve25519_public_key_generate(ri.onion_curve25519_pkey,
&curve25519_secret_key);
memset(ri.cache_info.identity_digest, 'A', DIGEST_LEN);
/* Setup ed25519 identity */
ed25519_keypair_t kp1;
ed25519_keypair_generate(&kp1, 0);
ri.cache_info.signing_key_cert = tor_malloc_zero(sizeof(tor_cert_t));
tt_assert(ri.cache_info.signing_key_cert);
ed25519_pubkey_copy(&ri.cache_info.signing_key_cert->signing_key,
&kp1.pubkey);
nodelist_set_routerinfo(&ri, NULL);
node = node_get_mutable_by_id(ri.cache_info.identity_digest);
tt_assert(node);
node->is_running = node->is_valid = node->is_fast = node->is_stable = 1;
}
/* We have to set this, or the lack of microdescriptors for these
* nodes will make them unusable. */
get_options_mutable()->UseMicrodescriptors = 0;
/* We expect to pick only one intro point from the node above. */
setup_full_capture_of_logs(LOG_INFO);
update_all_descriptors(now);
tor_free(node->ri->onion_curve25519_pkey); /* Avoid memleak. */
tor_free(node->ri->cache_info.signing_key_cert);
crypto_pk_free(node->ri->onion_pkey);
expect_log_msg_containing("just picked 1 intro points and wanted 3 for next "
"descriptor. It currently has 0 intro points. "
"Launching ESTABLISH_INTRO circuit shortly.");
teardown_capture_of_logs();
tt_int_op(digest256map_size(service->desc_current->intro_points.map),
OP_EQ, 1);
tt_int_op(digest256map_size(service->desc_next->intro_points.map),
OP_EQ, 1);
/* Get the IP object. Because we don't have the auth key of the IP, we can't
* query it so get the first element in the map. */
{
void *obj = NULL;
const uint8_t *key;
digest256map_iter_t *iter =
digest256map_iter_init(service->desc_current->intro_points.map);
digest256map_iter_get(iter, &key, &obj);
tt_assert(obj);
ip_cur = obj;
/* Get also the IP from the next descriptor. We'll make sure it's not the
* same object as in the current descriptor. */
iter = digest256map_iter_init(service->desc_next->intro_points.map);
digest256map_iter_get(iter, &key, &obj);
tt_assert(obj);
ip_next = obj;
}
tt_mem_op(ip_cur, OP_NE, ip_next, sizeof(hs_desc_intro_point_t));
/* We won't test the service IP object because there is a specific test
* already for this but we'll make sure that the state is coherent.*/
/* Three link specifiers are mandatoy so make sure we do have them. */
tt_int_op(smartlist_len(ip_cur->base.link_specifiers), OP_EQ, 3);
/* Make sure we have a valid encryption keypair generated when we pick an
* intro point in the update process. */
tt_assert(!tor_mem_is_zero((char *) ip_cur->enc_key_kp.seckey.secret_key,
CURVE25519_SECKEY_LEN));
tt_assert(!tor_mem_is_zero((char *) ip_cur->enc_key_kp.pubkey.public_key,
CURVE25519_PUBKEY_LEN));
tt_u64_op(ip_cur->time_to_expire, OP_GE, now +
INTRO_POINT_LIFETIME_MIN_SECONDS);
tt_u64_op(ip_cur->time_to_expire, OP_LE, now +
INTRO_POINT_LIFETIME_MAX_SECONDS);
/* Now, we will try to set up a service after a new time period has started
* and see if it behaves as expected. */
ret = parse_rfc1123_time("Sat, 26 Oct 1985 13:00:00 UTC",
&mock_ns.valid_after);
tt_int_op(ret, OP_EQ, 0);
ret = parse_rfc1123_time("Sat, 26 Oct 1985 14:00:00 UTC",
&mock_ns.fresh_until);
tt_int_op(ret, OP_EQ, 0);
/* Create a service without a current descriptor to trigger a build. */
service = helper_create_service();
tt_assert(service);
/* Unfortunately, the helper creates a dummy descriptor so get rid of it. */
service_descriptor_free(service->desc_current);
service->desc_current = NULL;
/* We have a fresh service so this should trigger a build for both
* descriptors for specific time period that we'll test. */
build_all_descriptors(now);
/* Check *current* descriptor. */
tt_assert(service->desc_current);
tt_assert(service->desc_current->desc);
tt_assert(service->desc_current->intro_points.map);
/* This should be for the previous time period. */
tt_u64_op(service->desc_current->time_period_num, OP_EQ,
hs_get_previous_time_period_num(0));
/* This should be untouched, the update descriptor process changes it. */
tt_u64_op(service->desc_current->next_upload_time, OP_EQ, 0);
/* Check *next* descriptor. */
tt_assert(service->desc_next);
tt_assert(service->desc_next->desc);
tt_assert(service->desc_next->intro_points.map);
tt_assert(service->desc_current != service->desc_next);
tt_u64_op(service->desc_next->time_period_num, OP_EQ,
hs_get_time_period_num(0));
/* This should be untouched, the update descriptor process changes it. */
tt_u64_op(service->desc_next->next_upload_time, OP_EQ, 0);
/* Let's remove the next descriptor to simulate a rotation. */
service_descriptor_free(service->desc_next);
service->desc_next = NULL;
build_all_descriptors(now);
/* Check *next* descriptor. */
tt_assert(service->desc_next);
tt_assert(service->desc_next->desc);
tt_assert(service->desc_next->intro_points.map);
tt_assert(service->desc_current != service->desc_next);
tt_u64_op(service->desc_next->time_period_num, OP_EQ,
hs_get_next_time_period_num(0));
/* This should be untouched, the update descriptor process changes it. */
tt_u64_op(service->desc_next->next_upload_time, OP_EQ, 0);
done:
hs_free_all();
nodelist_free_all();
}
static void
test_upload_descriptors(void *arg)
{
int ret;
time_t now = time(NULL);
hs_service_t *service;
(void) arg;
hs_init();
MOCK(get_or_state,
get_or_state_replacement);
MOCK(networkstatus_get_live_consensus,
mock_networkstatus_get_live_consensus);
dummy_state = tor_malloc_zero(sizeof(or_state_t));
ret = parse_rfc1123_time("Sat, 26 Oct 1985 13:00:00 UTC",
&mock_ns.valid_after);
tt_int_op(ret, OP_EQ, 0);
ret = parse_rfc1123_time("Sat, 26 Oct 1985 14:00:00 UTC",
&mock_ns.fresh_until);
tt_int_op(ret, OP_EQ, 0);
/* Create a service with no descriptor. It's added to the global map. */
service = hs_service_new(get_options());
tt_assert(service);
service->config.version = HS_VERSION_THREE;
ed25519_secret_key_generate(&service->keys.identity_sk, 0);
ed25519_public_key_generate(&service->keys.identity_pk,
&service->keys.identity_sk);
/* Register service to global map. */
ret = register_service(get_hs_service_map(), service);
tt_int_op(ret, OP_EQ, 0);
/* But first, build our descriptor. */
build_all_descriptors(now);
/* Nothing should happen because we have 0 introduction circuit established
* and we want (by default) 3 intro points. */
run_upload_descriptor_event(now);
/* If no upload happened, this should be untouched. */
tt_u64_op(service->desc_current->next_upload_time, OP_EQ, 0);
/* We'll simulate that we've opened our intro point circuit and that we only
* want one intro point. */
service->config.num_intro_points = 1;
/* Set our next upload time after now which will skip the upload. */
service->desc_current->next_upload_time = now + 1000;
run_upload_descriptor_event(now);
/* If no upload happened, this should be untouched. */
tt_u64_op(service->desc_current->next_upload_time, OP_EQ, now + 1000);
done:
hs_free_all();
UNMOCK(get_or_state);
}
/** Test the functions that save and load HS revision counters to state. */
static void
test_revision_counter_state(void *arg)
{
char *state_line_one = NULL;
char *state_line_two = NULL;
hs_service_descriptor_t *desc_one = service_descriptor_new();
hs_service_descriptor_t *desc_two = service_descriptor_new();
(void) arg;
/* Prepare both descriptors */
desc_one->desc->plaintext_data.revision_counter = 42;
desc_two->desc->plaintext_data.revision_counter = 240;
memset(&desc_one->blinded_kp.pubkey.pubkey, 66,
sizeof(desc_one->blinded_kp.pubkey.pubkey));
memset(&desc_two->blinded_kp.pubkey.pubkey, 240,
sizeof(desc_one->blinded_kp.pubkey.pubkey));
/* Turn the descriptor rev counters into state lines */
state_line_one = encode_desc_rev_counter_for_state(desc_one);
tt_str_op(state_line_one, OP_EQ,
"QkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkJCQkI 42");
state_line_two = encode_desc_rev_counter_for_state(desc_two);
tt_str_op(state_line_two, OP_EQ,
"8PDw8PDw8PDw8PDw8PDw8PDw8PDw8PDw8PDw8PDw8PA 240");
/* Now let's test our state parsing function: */
int service_found;
uint64_t cached_rev_counter;
/* First's try with wrong pubkey and check that no service was found */
cached_rev_counter =check_state_line_for_service_rev_counter(state_line_one,
&desc_two->blinded_kp.pubkey,
&service_found);
tt_int_op(service_found, OP_EQ, 0);
tt_u64_op(cached_rev_counter, OP_EQ, 0);
/* Now let's try with the right pubkeys */
cached_rev_counter =check_state_line_for_service_rev_counter(state_line_one,
&desc_one->blinded_kp.pubkey,
&service_found);
tt_int_op(service_found, OP_EQ, 1);
tt_u64_op(cached_rev_counter, OP_EQ, 42);
cached_rev_counter =check_state_line_for_service_rev_counter(state_line_two,
&desc_two->blinded_kp.pubkey,
&service_found);
tt_int_op(service_found, OP_EQ, 1);
tt_u64_op(cached_rev_counter, OP_EQ, 240);
done:
tor_free(state_line_one);
tor_free(state_line_two);
service_descriptor_free(desc_one);
service_descriptor_free(desc_two);
}
/** Global vars used by test_rendezvous1_parsing() */
static char rend1_payload[RELAY_PAYLOAD_SIZE];
static size_t rend1_payload_len = 0;
/** Mock for relay_send_command_from_edge() to send a RENDEZVOUS1 cell. Instead
* of sending it to the network, instead save it to the global `rend1_payload`
* variable so that we can inspect it in the test_rendezvous1_parsing()
* test. */
static int
mock_relay_send_rendezvous1(streamid_t stream_id, circuit_t *circ,
uint8_t relay_command, const char *payload,
size_t payload_len,
crypt_path_t *cpath_layer,
const char *filename, int lineno)
{
(void) stream_id;
(void) circ;
(void) relay_command;
(void) cpath_layer;
(void) filename;
(void) lineno;
memcpy(rend1_payload, payload, payload_len);
rend1_payload_len = payload_len;
return 0;
}
/** Send a RENDEZVOUS1 as a service, and parse it as a client. */
static void
test_rendezvous1_parsing(void *arg)
{
int retval;
static const char *test_addr =
"4acth47i6kxnvkewtm6q7ib2s3ufpo5sqbsnzjpbi7utijcltosqemad.onion";
hs_service_t *service = NULL;
origin_circuit_t *service_circ = NULL;
origin_circuit_t *client_circ = NULL;
ed25519_keypair_t ip_auth_kp;
curve25519_keypair_t ephemeral_kp;
curve25519_keypair_t client_kp;
curve25519_keypair_t ip_enc_kp;
int flags = CIRCLAUNCH_NEED_UPTIME | CIRCLAUNCH_IS_INTERNAL;
(void) arg;
MOCK(relay_send_command_from_edge_, mock_relay_send_rendezvous1);
{
/* Let's start by setting up the service that will start the rend */
service = tor_malloc_zero(sizeof(hs_service_t));
ed25519_secret_key_generate(&service->keys.identity_sk, 0);
ed25519_public_key_generate(&service->keys.identity_pk,
&service->keys.identity_sk);
memcpy(service->onion_address, test_addr, sizeof(service->onion_address));
tt_assert(service);
}
{
/* Now let's set up the service rendezvous circuit and its keys. */
service_circ = helper_create_origin_circuit(CIRCUIT_PURPOSE_S_CONNECT_REND,
flags);
tor_free(service_circ->hs_ident);
hs_ntor_rend_cell_keys_t hs_ntor_rend_cell_keys;
uint8_t rendezvous_cookie[HS_REND_COOKIE_LEN];
curve25519_keypair_generate(&ip_enc_kp, 0);
curve25519_keypair_generate(&ephemeral_kp, 0);
curve25519_keypair_generate(&client_kp, 0);
ed25519_keypair_generate(&ip_auth_kp, 0);
retval = hs_ntor_service_get_rendezvous1_keys(&ip_auth_kp.pubkey,
&ip_enc_kp,
&ephemeral_kp,
&client_kp.pubkey,
&hs_ntor_rend_cell_keys);
tt_int_op(retval, OP_EQ, 0);
memset(rendezvous_cookie, 2, sizeof(rendezvous_cookie));
service_circ->hs_ident =
create_rp_circuit_identifier(service, rendezvous_cookie,
&ephemeral_kp.pubkey,
&hs_ntor_rend_cell_keys);
}
/* Send out the RENDEZVOUS1 and make sure that our mock func worked */
tt_assert(tor_mem_is_zero(rend1_payload, 32));
hs_circ_service_rp_has_opened(service, service_circ);
tt_assert(!tor_mem_is_zero(rend1_payload, 32));
tt_int_op(rend1_payload_len, OP_EQ, HS_LEGACY_RENDEZVOUS_CELL_SIZE);
/******************************/
/** Now let's create the client rendezvous circuit */
client_circ =
helper_create_origin_circuit(CIRCUIT_PURPOSE_C_REND_READY_INTRO_ACKED,
flags);
/* fix up its circ ident */
ed25519_pubkey_copy(&client_circ->hs_ident->intro_auth_pk,
&ip_auth_kp.pubkey);
memcpy(&client_circ->hs_ident->rendezvous_client_kp,
&client_kp, sizeof(client_circ->hs_ident->rendezvous_client_kp));
memcpy(&client_circ->hs_ident->intro_enc_pk.public_key,
&ip_enc_kp.pubkey.public_key,
sizeof(client_circ->hs_ident->intro_enc_pk.public_key));
/* Now parse the rendezvous2 circuit and make sure it was fine. We are
* skipping 20 bytes off its payload, since that's the rendezvous cookie
* which is only present in REND1. */
retval = handle_rendezvous2(client_circ,
(uint8_t*)rend1_payload+20,
rend1_payload_len-20);
tt_int_op(retval, OP_EQ, 0);
/* TODO: We are only simulating client/service here. We could also simulate
* the rendezvous point by plugging in rend_mid_establish_rendezvous(). We
* would need an extra circuit and some more stuff but it's doable. */
done:
circuit_free_(TO_CIRCUIT(service_circ));
circuit_free_(TO_CIRCUIT(client_circ));
hs_service_free(service);
hs_free_all();
UNMOCK(relay_send_command_from_edge_);
}
struct testcase_t hs_service_tests[] = {
{ "e2e_rend_circuit_setup", test_e2e_rend_circuit_setup, TT_FORK,
NULL, NULL },
{ "load_keys", test_load_keys, TT_FORK,
NULL, NULL },
{ "access_service", test_access_service, TT_FORK,
NULL, NULL },
{ "service_intro_point", test_service_intro_point, TT_FORK,
NULL, NULL },
{ "helper_functions", test_helper_functions, TT_FORK,
NULL, NULL },
{ "intro_circuit_opened", test_intro_circuit_opened, TT_FORK,
NULL, NULL },
{ "intro_established", test_intro_established, TT_FORK,
NULL, NULL },
{ "closing_intro_circs", test_closing_intro_circs, TT_FORK,
NULL, NULL },
{ "rdv_circuit_opened", test_rdv_circuit_opened, TT_FORK,
NULL, NULL },
{ "introduce2", test_introduce2, TT_FORK,
NULL, NULL },
{ "service_event", test_service_event, TT_FORK,
NULL, NULL },
{ "rotate_descriptors", test_rotate_descriptors, TT_FORK,
NULL, NULL },
{ "build_update_descriptors", test_build_update_descriptors, TT_FORK,
NULL, NULL },
{ "upload_descriptors", test_upload_descriptors, TT_FORK,
NULL, NULL },
{ "revision_counter_state", test_revision_counter_state, TT_FORK,
NULL, NULL },
{ "rendezvous1_parsing", test_rendezvous1_parsing, TT_FORK,
NULL, NULL },
END_OF_TESTCASES
};
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