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/**
* @file test_client_monitoring.c
* @author Roman Janota <janota@cesnet.cz>
* @brief libnetconf2 client monitoring thread test
*
* @copyright
* Copyright (c) 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 <cmocka.h>
#include "ln2_test.h"
#include "session_p.h"
#include <libssh/libssh.h>
int TEST_PORT = 10050;
const char *TEST_PORT_STR = "10050";
void
monitoring_clb(struct nc_session *sess, void *user_data)
{
pthread_barrier_t *barrier = user_data;
/* signal the main thread that the monitoring callback was called */
pthread_barrier_wait(barrier);
printf("Session with ID %d disconnected by the server.\n", nc_session_get_id(sess));
nc_session_free(sess, NULL);
}
static void *
client_thread(void *arg)
{
int ret;
struct nc_session *session = NULL;
struct ln2_test_ctx *test_ctx = arg;
pthread_barrier_t monitoring_barrier;
/* initialize the barrier */
ret = pthread_barrier_init(&monitoring_barrier, NULL, 2);
assert_int_equal(ret, 0);
/* start the monitoring thread */
ret = nc_client_monitoring_thread_start(monitoring_clb, &monitoring_barrier, NULL);
assert_int_equal(ret, 0);
/* skip all hostkey and known_hosts checks */
nc_client_ssh_set_knownhosts_mode(NC_SSH_KNOWNHOSTS_SKIP);
/* set the search path for the schemas */
ret = nc_client_set_schema_searchpath(MODULES_DIR);
assert_int_equal(ret, 0);
/* set the client's username */
ret = nc_client_ssh_set_username("test_client_monitoring");
assert_int_equal(ret, 0);
/* add the client's key pair */
ret = nc_client_ssh_add_keypair(TESTS_DIR "/data/key_rsa.pub", TESTS_DIR "/data/key_rsa");
assert_int_equal(ret, 0);
/* wait for the server to be ready and connect */
pthread_barrier_wait(&test_ctx->barrier);
session = nc_connect_ssh("127.0.0.1", TEST_PORT, NULL);
assert_non_null(session);
/* wait for the monitoring thread callback to be called */
pthread_barrier_wait(&monitoring_barrier);
/* stop the monitoring thread */
nc_client_monitoring_thread_stop();
pthread_barrier_destroy(&monitoring_barrier);
return NULL;
}
void *
server_thread(void *arg)
{
int ret;
NC_MSG_TYPE msgtype;
struct nc_session *session = NULL;
struct nc_pollsession *ps = NULL;
struct ln2_test_ctx *test_ctx = arg;
int fd;
struct linger ling = {1, 0};
ps = nc_ps_new();
assert_non_null(ps);
/* wait for the client to be ready to connect */
pthread_barrier_wait(&test_ctx->barrier);
/* accept a session and add it to the poll session structure */
msgtype = nc_accept(NC_ACCEPT_TIMEOUT, test_ctx->ctx, &session);
assert_int_equal(msgtype, NC_MSG_HELLO);
/* get the session's fd */
fd = ssh_get_fd(session->ti.libssh.session);
assert_int_not_equal(fd, -1);
/* set the socket to close immediately */
ret = setsockopt(fd, SOL_SOCKET, SO_LINGER, &ling, sizeof(ling));
assert_int_equal(ret, 0);
/* add the session to the poll session */
ret = nc_ps_add_session(ps, session);
assert_int_equal(ret, 0);
/* poll until the client stops sending messages */
do {
ret = nc_ps_poll(ps, NC_PS_POLL_TIMEOUT, NULL);
} while ((ret & NC_PSPOLL_RPC));
/* free the session (it will close the socket -> client needs to detect this) */
nc_ps_clear(ps, 1, NULL);
nc_ps_free(ps);
return NULL;
}
static void
test_nc_client_monitoring(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(void **state)
{
int ret;
struct lyd_node *tree = NULL;
struct ln2_test_ctx *test_ctx;
/* global setup */
ret = ln2_glob_test_setup(&test_ctx);
assert_int_equal(ret, 0);
*state = test_ctx;
/* add endpoint */
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);
/* add hostkey */
ret = nc_server_config_add_ssh_hostkey(test_ctx->ctx, "endpt", "hostkey", TESTS_DIR "/data/key_ecdsa", NULL, &tree);
assert_int_equal(ret, 0);
/* add the test client */
ret = nc_server_config_add_ssh_user_pubkey(test_ctx->ctx, "endpt", "test_client_monitoring", "pubkey", TESTS_DIR "/data/key_rsa.pub", &tree);
assert_int_equal(ret, 0);
/* configure the server based on the data */
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_client_monitoring, setup, 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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