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/**
* @file test_two_channels.c
* @author Roman Janota <janota@cesnet.cz>
* @brief libnetconf2 Openning a new session on an established SSH channel test.
*
* @copyright
* Copyright (c) 2023 - 2024 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#define _GNU_SOURCE
#include <errno.h>
#include <pthread.h>
#include <setjmp.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <cmocka.h>
#include "ln2_test.h"
#define BACKOFF_TIMEOUT_USECS 100
int TEST_PORT = 10050;
const char *TEST_PORT_STR = "10050";
static void *
server_thread(void *arg)
{
int ret, del_session_count = 0, sleep_count = 0;
NC_MSG_TYPE msgtype;
struct nc_session *session, *new_session;
struct nc_pollsession *ps;
struct ln2_test_ctx *test_ctx = arg;
ps = nc_ps_new();
assert_non_null(ps);
while (del_session_count < 2) {
msgtype = nc_accept(0, test_ctx->ctx, &new_session);
if (msgtype == NC_MSG_HELLO) {
ret = nc_ps_add_session(ps, new_session);
assert_int_equal(ret, 0);
}
ret = nc_ps_poll(ps, 0, &session);
if (ret & NC_PSPOLL_SESSION_TERM) {
nc_ps_del_session(ps, session);
nc_session_free(session, NULL);
del_session_count++;
} else if (ret & NC_PSPOLL_SSH_CHANNEL) {
msgtype = nc_session_accept_ssh_channel(session, &new_session);
if (msgtype == NC_MSG_HELLO) {
ret = nc_ps_add_session(ps, new_session);
assert_int_equal(ret, 0);
}
} else if (ret & NC_PS_POLL_TIMEOUT) {
usleep(BACKOFF_TIMEOUT_USECS);
sleep_count++;
assert_int_not_equal(sleep_count, 50000);
}
}
nc_ps_free(ps);
return NULL;
}
static void *
client_thread(void *arg)
{
int ret;
struct nc_session *session_cl1, *session_cl2;
(void) arg;
/* skip all hostkey and known_hosts checks */
nc_client_ssh_set_knownhosts_mode(NC_SSH_KNOWNHOSTS_SKIP);
ret = nc_client_set_schema_searchpath(MODULES_DIR);
assert_int_equal(ret, 0);
ret = nc_client_ssh_add_keypair(TESTS_DIR "/data/id_ed25519.pub", TESTS_DIR "/data/id_ed25519");
assert_int_equal(ret, 0);
ret = nc_client_ssh_set_username("client_1");
assert_int_equal(ret, 0);
session_cl1 = nc_connect_ssh("127.0.0.1", TEST_PORT, NULL);
assert_non_null(session_cl1);
ret = nc_client_ssh_set_username("client_2");
assert_int_equal(ret, 0);
ret = nc_client_ssh_del_keypair(0);
assert_int_equal(ret, 0);
ret = nc_client_ssh_add_keypair(TESTS_DIR "/data/id_ecdsa521.pub", TESTS_DIR "/data/id_ecdsa521");
assert_int_equal(ret, 0);
session_cl2 = nc_connect_ssh_channel(session_cl1, NULL);
assert_non_null(session_cl2);
nc_session_free(session_cl1, NULL);
nc_session_free(session_cl2, NULL);
return NULL;
}
static void
test_nc_two_channels(void **state)
{
int ret, i;
pthread_t tids[2];
ret = pthread_create(&tids[0], NULL, client_thread, *state);
assert_int_equal(ret, 0);
ret = pthread_create(&tids[1], NULL, server_thread, *state);
assert_int_equal(ret, 0);
for (i = 0; i < 2; i++) {
pthread_join(tids[i], NULL);
}
}
static int
setup_f(void **state)
{
int ret;
struct lyd_node *tree = NULL;
struct ln2_test_ctx *test_ctx;
ret = ln2_glob_test_setup(&test_ctx);
assert_int_equal(ret, 0);
*state = test_ctx;
ret = nc_server_config_add_address_port(test_ctx->ctx, "endpt", NC_TI_SSH, "127.0.0.1", TEST_PORT, &tree);
assert_int_equal(ret, 0);
ret = nc_server_config_add_ssh_hostkey(test_ctx->ctx, "endpt", "hostkey", TESTS_DIR "/data/key_ecdsa", NULL, &tree);
assert_int_equal(ret, 0);
ret = nc_server_config_add_ssh_user_pubkey(test_ctx->ctx, "endpt", "client_1", "pubkey", TESTS_DIR "/data/id_ed25519.pub", &tree);
assert_int_equal(ret, 0);
ret = nc_server_config_add_ssh_user_pubkey(test_ctx->ctx, "endpt", "client_2", "pubkey", TESTS_DIR "/data/id_ecdsa521.pub", &tree);
assert_int_equal(ret, 0);
ret = nc_server_config_setup_data(tree);
assert_int_equal(ret, 0);
lyd_free_all(tree);
return 0;
}
int
main(void)
{
const struct CMUnitTest tests[] = {
cmocka_unit_test_setup_teardown(test_nc_two_channels, setup_f, ln2_glob_test_teardown),
};
/* try to get ports from the environment, otherwise use the default */
if (ln2_glob_test_get_ports(1, &TEST_PORT, &TEST_PORT_STR)) {
return 1;
}
setenv("CMOCKA_TEST_ABORT", "1", 1);
return cmocka_run_group_tests(tests, NULL, NULL);
}
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