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test: Add test_hs_cell unit tests

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Move ESTABLISH_INTRO tests from test_hs_service.c to this new file.

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2017-04-20 09:58:21 -04:00 committed by Nick Mathewson
parent 30b5c6a95e
commit 472835d6e9
5 changed files with 117 additions and 87 deletions
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1
src/test/include.am
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@ -115,6 +115,7 @@ src_test_test_SOURCES = \
src/test/test_extorport.c \
src/test/test_hs.c \
src/test/test_hs_config.c \
src/test/test_hs_cell.c \
src/test/test_hs_service.c \
src/test/test_hs_client.c \
src/test/test_hs_intropoint.c \

1
src/test/test.c
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@ -1214,6 +1214,7 @@ struct testgroup_t testgroups[] = {
{ "extorport/", extorport_tests },
{ "legacy_hs/", hs_tests },
{ "hs_cache/", hs_cache },
{ "hs_cell/", hs_cell_tests },
{ "hs_config/", hs_config_tests },
{ "hs_descriptor/", hs_descriptor },
{ "hs_service/", hs_service_tests },

1
src/test/test.h
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@ -207,6 +207,7 @@ extern struct testcase_t guardfraction_tests[];
extern struct testcase_t extorport_tests[];
extern struct testcase_t hs_tests[];
extern struct testcase_t hs_cache[];
extern struct testcase_t hs_cell_tests[];
extern struct testcase_t hs_config_tests[];
extern struct testcase_t hs_descriptor[];
extern struct testcase_t hs_service_tests[];

114
src/test/test_hs_cell.c Normal file
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@ -0,0 +1,114 @@
/* Copyright (c) 2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file test_hs_cell.c
* \brief Test hidden service cell functionality.
*/
#define HS_INTROPOINT_PRIVATE
#define HS_SERVICE_PRIVATE
#include "test.h"
#include "test_helpers.h"
#include "log_test_helpers.h"
#include "crypto_ed25519.h"
#include "hs_intropoint.h"
#include "hs_service.h"
/* Trunnel. */
#include "hs/cell_establish_intro.h"
/** We simulate the creation of an outgoing ESTABLISH_INTRO cell, and then we
* parse it from the receiver side. */
static void
test_gen_establish_intro_cell(void *arg)
{
(void) arg;
ssize_t retval;
uint8_t circuit_key_material[DIGEST_LEN] = {0};
uint8_t buf[RELAY_PAYLOAD_SIZE];
trn_cell_establish_intro_t *cell_out = NULL;
trn_cell_establish_intro_t *cell_in = NULL;
crypto_rand((char *) circuit_key_material, sizeof(circuit_key_material));
/* Create outgoing ESTABLISH_INTRO cell and extract its payload so that we
attempt to parse it. */
{
cell_out = generate_establish_intro_cell(circuit_key_material,
sizeof(circuit_key_material));
tt_assert(cell_out);
retval = get_establish_intro_payload(buf, sizeof(buf), cell_out);
tt_int_op(retval, >=, 0);
}
/* Parse it as the receiver */
{
ssize_t parse_result = trn_cell_establish_intro_parse(&cell_in,
buf, sizeof(buf));
tt_int_op(parse_result, >=, 0);
retval = verify_establish_intro_cell(cell_in,
circuit_key_material,
sizeof(circuit_key_material));
tt_int_op(retval, >=, 0);
}
done:
trn_cell_establish_intro_free(cell_out);
trn_cell_establish_intro_free(cell_in);
}
/* Mocked ed25519_sign_prefixed() function that always fails :) */
static int
mock_ed25519_sign_prefixed(ed25519_signature_t *signature_out,
const uint8_t *msg, size_t msg_len,
const char *prefix_str,
const ed25519_keypair_t *keypair) {
(void) signature_out;
(void) msg;
(void) msg_len;
(void) prefix_str;
(void) keypair;
return -1;
}
/** We simulate a failure to create an ESTABLISH_INTRO cell */
static void
test_gen_establish_intro_cell_bad(void *arg)
{
(void) arg;
trn_cell_establish_intro_t *cell = NULL;
uint8_t circuit_key_material[DIGEST_LEN] = {0};
MOCK(ed25519_sign_prefixed, mock_ed25519_sign_prefixed);
crypto_rand((char *) circuit_key_material, sizeof(circuit_key_material));
setup_full_capture_of_logs(LOG_WARN);
/* Easiest way to make that function fail is to mock the
ed25519_sign_prefixed() function and make it fail. */
cell = generate_establish_intro_cell(circuit_key_material,
sizeof(circuit_key_material));
expect_log_msg_containing("Unable to gen signature for "
"ESTABLISH_INTRO cell.");
teardown_capture_of_logs();
tt_assert(!cell);
done:
trn_cell_establish_intro_free(cell);
UNMOCK(ed25519_sign_prefixed);
}
struct testcase_t hs_cell_tests[] = {
{ "gen_establish_intro_cell", test_gen_establish_intro_cell, TT_FORK,
NULL, NULL },
{ "gen_establish_intro_cell_bad", test_gen_establish_intro_cell_bad, TT_FORK,
NULL, NULL },
END_OF_TESTCASES
};

87
src/test/test_hs_service.c
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@ -59,89 +59,6 @@ helper_config_service(const char *conf)
return ret;
}
/** We simulate the creation of an outgoing ESTABLISH_INTRO cell, and then we
* parse it from the receiver side. */
static void
test_gen_establish_intro_cell(void *arg)
{
(void) arg;
ssize_t retval;
uint8_t circuit_key_material[DIGEST_LEN] = {0};
uint8_t buf[RELAY_PAYLOAD_SIZE];
trn_cell_establish_intro_t *cell_out = NULL;
trn_cell_establish_intro_t *cell_in = NULL;
crypto_rand((char *) circuit_key_material, sizeof(circuit_key_material));
/* Create outgoing ESTABLISH_INTRO cell and extract its payload so that we
attempt to parse it. */
{
cell_out = generate_establish_intro_cell(circuit_key_material,
sizeof(circuit_key_material));
tt_assert(cell_out);
retval = get_establish_intro_payload(buf, sizeof(buf), cell_out);
tt_int_op(retval, >=, 0);
}
/* Parse it as the receiver */
{
ssize_t parse_result = trn_cell_establish_intro_parse(&cell_in,
buf, sizeof(buf));
tt_int_op(parse_result, >=, 0);
retval = verify_establish_intro_cell(cell_in,
circuit_key_material,
sizeof(circuit_key_material));
tt_int_op(retval, >=, 0);
}
done:
trn_cell_establish_intro_free(cell_out);
trn_cell_establish_intro_free(cell_in);
}
/* Mocked ed25519_sign_prefixed() function that always fails :) */
static int
mock_ed25519_sign_prefixed(ed25519_signature_t *signature_out,
const uint8_t *msg, size_t msg_len,
const char *prefix_str,
const ed25519_keypair_t *keypair) {
(void) signature_out;
(void) msg;
(void) msg_len;
(void) prefix_str;
(void) keypair;
return -1;
}
/** We simulate a failure to create an ESTABLISH_INTRO cell */
static void
test_gen_establish_intro_cell_bad(void *arg)
{
(void) arg;
trn_cell_establish_intro_t *cell = NULL;
uint8_t circuit_key_material[DIGEST_LEN] = {0};
MOCK(ed25519_sign_prefixed, mock_ed25519_sign_prefixed);
crypto_rand((char *) circuit_key_material, sizeof(circuit_key_material));
setup_full_capture_of_logs(LOG_WARN);
/* Easiest way to make that function fail is to mock the
ed25519_sign_prefixed() function and make it fail. */
cell = generate_establish_intro_cell(circuit_key_material,
sizeof(circuit_key_material));
expect_log_msg_containing("Unable to gen signature for "
"ESTABLISH_INTRO cell.");
teardown_capture_of_logs();
tt_assert(!cell);
done:
trn_cell_establish_intro_free(cell);
UNMOCK(ed25519_sign_prefixed);
}
/** Test the HS ntor handshake. Simulate the sending of an encrypted INTRODUCE1
* cell, and verify the proper derivation of decryption keys on the other end.
* Then simulate the sending of an authenticated RENDEZVOUS1 cell and verify
@ -601,10 +518,6 @@ test_desc_overlap_period(void *arg)
}
struct testcase_t hs_service_tests[] = {
{ "gen_establish_intro_cell", test_gen_establish_intro_cell, TT_FORK,
NULL, NULL },
{ "gen_establish_intro_cell_bad", test_gen_establish_intro_cell_bad, TT_FORK,
NULL, NULL },
{ "hs_ntor", test_hs_ntor, TT_FORK,
NULL, NULL },
{ "time_period", test_time_period, TT_FORK,