Commit 173dd486 authored by asn's avatar asn Committed by Nick Mathewson

test: Add client-side unittests for e2e rend circuits.

parent dc3a2037
......@@ -115,6 +115,7 @@ src_test_test_SOURCES = \
src/test/test_extorport.c \
src/test/test_hs.c \
src/test/test_hs_service.c \
src/test/test_hs_client.c \
src/test/test_hs_intropoint.c \
src/test/test_handles.c \
src/test/test_hs_cache.c \
......
......@@ -1215,6 +1215,7 @@ struct testgroup_t testgroups[] = {
{ "hs_cache/", hs_cache },
{ "hs_descriptor/", hs_descriptor },
{ "hs_service/", hs_service_tests },
{ "hs_client/", hs_client_tests },
{ "hs_intropoint/", hs_intropoint_tests },
{ "introduce/", introduce_tests },
{ "keypin/", keypin_tests },
......
......@@ -209,6 +209,7 @@ extern struct testcase_t hs_tests[];
extern struct testcase_t hs_cache[];
extern struct testcase_t hs_descriptor[];
extern struct testcase_t hs_service_tests[];
extern struct testcase_t hs_client_tests[];
extern struct testcase_t hs_intropoint_tests[];
extern struct testcase_t introduce_tests[];
extern struct testcase_t keypin_tests[];
......
/* Copyright (c) 2014-2017, The Tor Project, Inc. */
/* Copyright (c) 2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#ifndef TOR_TEST_HELPERS_H
#define TOR_TEST_HELPERS_H
#include "or.h"
const char *get_yesterday_date_str(void);
circuit_t * dummy_origin_circuit_new(int num_cells);
......@@ -25,5 +27,5 @@ connection_t *test_conn_get_connection(uint8_t state,
extern const char TEST_DESCRIPTORS[];
#endif
#endif /* TOR_TEST_HELPERS_H */
/* Copyright (c) 2016-2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file test_hs_client.c
* \brief Test prop224 HS client functionality.
*/
#define CRYPTO_PRIVATE
#define MAIN_PRIVATE
#define TOR_CHANNEL_INTERNAL_
#define CIRCUITBUILD_PRIVATE
#define CIRCUITLIST_PRIVATE
#define CONNECTION_PRIVATE
#include "test.h"
#include "test_helpers.h"
#include "log_test_helpers.h"
#include "rend_test_helpers.h"
#include "config.h"
#include "crypto.h"
#include "channeltls.h"
#include "hs_circuit.h"
#include "hs_ident.h"
#include "circuitlist.h"
#include "circuitbuild.h"
#include "connection.h"
#include "connection_edge.h"
static int
mock_connection_ap_handshake_send_begin(entry_connection_t *ap_conn)
{
(void) ap_conn;
return 0;
}
/* Test helper function: Setup a circuit and a stream with the same hidden
* service destination, and put them in <b>circ_out</b> and
* <b>conn_out</b>. Make the stream wait for circuits to be established to the
* hidden service. */
static int
helper_get_circ_and_stream_for_test(origin_circuit_t **circ_out,
connection_t **conn_out,
int is_legacy)
{
int retval;
channel_tls_t *n_chan=NULL;
rend_data_t *conn_rend_data = NULL;
origin_circuit_t *or_circ = NULL;
connection_t *conn = NULL;
ed25519_public_key_t service_pk;
/* Make a dummy connection stream and make it wait for our circuit */
conn = test_conn_get_connection(AP_CONN_STATE_CIRCUIT_WAIT,
CONN_TYPE_AP /* ??? */,
0);
if (is_legacy) {
/* Legacy: Setup rend_data of stream */
char service_id[REND_SERVICE_ID_LEN_BASE32+1] = {0};
TO_EDGE_CONN(conn)->rend_data = mock_rend_data(service_id);
conn_rend_data = TO_EDGE_CONN(conn)->rend_data;
} else {
/* 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));
/* Setup hs_conn_identifier of stream */
TO_EDGE_CONN(conn)->hs_ident = hs_ident_edge_conn_new(&service_pk);
}
/* Make it wait for circuit */
connection_ap_mark_as_pending_circuit(TO_ENTRY_CONN(conn));
/* This is needed to silence a BUG warning from
connection_edge_update_circuit_isolation() */
TO_ENTRY_CONN(conn)->original_dest_address =
tor_strdup(TO_ENTRY_CONN(conn)->socks_request->address);
/****************************************************/
/* Now make dummy circuit */
or_circ = origin_circuit_new();
or_circ->base_.purpose = CIRCUIT_PURPOSE_C_REND_READY_INTRO_ACKED;
or_circ->build_state = tor_malloc_zero(sizeof(cpath_build_state_t));
or_circ->build_state->is_internal = 1;
if (is_legacy) {
/* Legacy: Setup rend data and final cpath */
or_circ->build_state->pending_final_cpath =
tor_malloc_zero(sizeof(crypt_path_t));
or_circ->build_state->pending_final_cpath->magic = CRYPT_PATH_MAGIC;
or_circ->build_state->pending_final_cpath->rend_dh_handshake_state =
crypto_dh_new(DH_TYPE_REND);
tt_assert(
or_circ->build_state->pending_final_cpath->rend_dh_handshake_state);
retval = crypto_dh_generate_public(
or_circ->build_state->pending_final_cpath->rend_dh_handshake_state);
tt_int_op(retval, ==, 0);
or_circ->rend_data = rend_data_dup(conn_rend_data);
} else {
/* prop224: Setup hs ident on the circuit */
or_circ->hs_ident = hs_ident_circuit_new(&service_pk,
HS_IDENT_CIRCUIT_RENDEZVOUS);
}
TO_CIRCUIT(or_circ)->state = CIRCUIT_STATE_OPEN;
/* fake n_chan */
n_chan = tor_malloc_zero(sizeof(channel_tls_t));
n_chan->base_.global_identifier = 1;
or_circ->base_.n_chan = &(n_chan->base_);
*circ_out = or_circ;
*conn_out = conn;
return 0;
done:
/* something failed */
return -1;
}
/* Test: Ensure that setting up legacy e2e rendezvous circuits works
* correctly. */
static void
test_e2e_rend_circuit_setup_legacy(void *arg)
{
int retval;
origin_circuit_t *or_circ = NULL;
connection_t *conn = NULL;
(void) arg;
/** In this test we create a v2 legacy HS stream and a circuit with the same
* hidden service destination. We make the stream wait for circuits to be
* established to the hidden service, and then we complete the circuit using
* the hs_circuit_setup_e2e_rend_circ_legacy_client() function. We then
* check that the end-to-end cpath was setup correctly and that the stream
* was attached to the circuit as expected. */
MOCK(connection_ap_handshake_send_begin,
mock_connection_ap_handshake_send_begin);
/* Setup */
retval = helper_get_circ_and_stream_for_test( &or_circ, &conn, 1);
tt_int_op(retval, OP_EQ, 0);
tt_assert(or_circ);
tt_assert(conn);
/* Check number of hops */
retval = cpath_get_n_hops(&or_circ->cpath);
tt_int_op(retval, ==, 0);
/* Check that our stream is not attached on any circuits */
tt_assert(!TO_EDGE_CONN(conn)->on_circuit);
/********************************************** */
/* Make a good RENDEZVOUS1 cell body because it needs to pass key exchange
* digest verification... */
uint8_t rend_cell_body[DH_KEY_LEN+DIGEST_LEN] = {2};
{
char keys[DIGEST_LEN+CPATH_KEY_MATERIAL_LEN];
crypto_dh_t *dh_state =
or_circ->build_state->pending_final_cpath->rend_dh_handshake_state;
/* compute and overwrite digest of cell body with the right value */
retval = crypto_dh_compute_secret(LOG_PROTOCOL_WARN, dh_state,
(char*)rend_cell_body, DH_KEY_LEN,
keys, DIGEST_LEN+CPATH_KEY_MATERIAL_LEN);
tt_int_op(retval, OP_GT, 0);
memcpy(rend_cell_body+DH_KEY_LEN, keys, DIGEST_LEN);
}
/* Setup the circuit */
retval = hs_circuit_setup_e2e_rend_circ_legacy_client(or_circ,
rend_cell_body);
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(or_circ->cpath->f_digest->algorithm, OP_EQ, DIGEST_SHA1);
tt_int_op(or_circ->cpath->b_digest->algorithm, OP_EQ, DIGEST_SHA1);
tt_assert(or_circ->cpath->f_crypto);
tt_assert(or_circ->cpath->b_crypto);
/* Ensure that circ purpose was changed */
tt_int_op(or_circ->base_.purpose, OP_EQ, CIRCUIT_PURPOSE_C_REND_JOINED);
/* Test that stream got attached */
tt_ptr_op(TO_EDGE_CONN(conn)->on_circuit, OP_EQ, TO_CIRCUIT(or_circ));
done:
connection_free_(conn);
tor_free(TO_CIRCUIT(or_circ)->n_chan);
circuit_free(TO_CIRCUIT(or_circ));
}
/* Test: Ensure that setting up v3 rendezvous circuits works correctly. */
static void
test_e2e_rend_circuit_setup(void *arg)
{
uint8_t ntor_key_seed[DIGEST256_LEN] = {0};
origin_circuit_t *or_circ;
int retval;
connection_t *conn = NULL;
(void) arg;
/** In this test we create a prop224 v3 HS stream and a circuit with the same
* hidden service destination. We make the stream wait for circuits to be
* established to the hidden service, and then we complete the circuit using
* the hs_circuit_setup_e2e_rend_circ() function. We then check that the
* end-to-end cpath was setup correctly and that the stream was attached to
* the circuit as expected. */
MOCK(connection_ap_handshake_send_begin,
mock_connection_ap_handshake_send_begin);
/* Setup */
retval = helper_get_circ_and_stream_for_test( &or_circ, &conn, 0);
tt_int_op(retval, OP_EQ, 0);
tt_assert(or_circ);
tt_assert(conn);
/* Check number of hops: There should be no hops yet to this circ */
retval = cpath_get_n_hops(&or_circ->cpath);
tt_int_op(retval, ==, 0);
tt_assert(!or_circ->cpath);
/* Check that our stream is not attached on any circuits */
tt_assert(!TO_EDGE_CONN(conn)->on_circuit);
/**********************************************/
/* Setup the circuit */
retval = hs_circuit_setup_e2e_rend_circ(or_circ, ntor_key_seed, 0);
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 that the crypt path has prop224 algorithm parameters */
tt_int_op(or_circ->cpath->f_digest->algorithm, OP_EQ, DIGEST_SHA3_256);
tt_int_op(or_circ->cpath->b_digest->algorithm, OP_EQ, DIGEST_SHA3_256);
tt_assert(or_circ->cpath->f_crypto);
tt_assert(or_circ->cpath->b_crypto);
/* Ensure that circ purpose was changed */
tt_int_op(or_circ->base_.purpose, OP_EQ, CIRCUIT_PURPOSE_C_REND_JOINED);
/* Test that stream got attached */
tt_ptr_op(TO_EDGE_CONN(conn)->on_circuit, OP_EQ, TO_CIRCUIT(or_circ));
done:
connection_free_(conn);
tor_free(TO_CIRCUIT(or_circ)->n_chan);
circuit_free(TO_CIRCUIT(or_circ));
}
struct testcase_t hs_client_tests[] = {
{ "e2e_rend_circuit_setup_legacy", test_e2e_rend_circuit_setup_legacy,
TT_FORK, NULL, NULL },
{ "e2e_rend_circuit_setup", test_e2e_rend_circuit_setup,
TT_FORK, NULL, NULL },
END_OF_TESTCASES
};
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