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/* Copyright 2020-2021 IGEL Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "test-socket-server.h"
#include <check.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "socket-path.h"
#include "test-helpers.h"
static void send_fd_list_over_socket(int socket, int nfds, int *fds)
{
char data;
struct iovec iov = {
.iov_base = &data,
.iov_len = 1,
};
int bufsize = CMSG_SPACE(nfds * sizeof(int));
char *buf = malloc(bufsize);
struct msghdr msg = {
.msg_iov = &iov,
.msg_iovlen = 1,
.msg_controllen = bufsize,
.msg_control = buf,
};
struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(nfds * sizeof(int));
memcpy(CMSG_DATA(cmsg), fds, sizeof(int) * nfds);
ck_assert_int_gt(sendmsg(socket, &msg, 0), 0);
free(buf);
}
struct server_state {
pthread_t tid;
pthread_mutex_t lock;
pthread_cond_t cond;
bool is_server_started;
struct test_config *config;
};
static void *test_server_thread(void *arg)
{
struct server_state *sstate = arg;
struct test_config *config = sstate->config;
struct sockaddr_un address = {
.sun_family = AF_UNIX,
};
ck_assert_int_eq(
sockaddr_set_lease_server_path(&address, config->lease_name), true);
int server = socket(PF_UNIX, SOCK_STREAM, 0);
ck_assert_int_ge(server, 0);
unlink(address.sun_path);
int ret;
ret = bind(server, (struct sockaddr *)&address, sizeof(address));
ck_assert_int_eq(ret, 0);
ret = listen(server, 1);
ck_assert_int_eq(ret, 0);
sstate->is_server_started = true;
pthread_cond_signal(&sstate->cond);
int client = accept(server, NULL, NULL);
/* accept is the cancellation point for this thread. If
* pthread_cancel() is called on this thread, accept() may return
* -1, so don't assert on it. */
if (client < 0) {
close(server);
return NULL;
}
if (config->send_no_data)
goto done;
if (config->send_data_without_fd) {
char data;
write(client, &data, 1);
goto done;
}
if (config->nfds == 0)
config->nfds = 1;
config->fds = calloc(config->nfds, sizeof(int));
for (int i = 0; i < config->nfds; i++)
config->fds[i] = get_dummy_fd();
send_fd_list_over_socket(client, config->nfds, config->fds);
done:
close(client);
close(server);
return NULL;
}
struct server_state *test_server_start(struct test_config *test_config)
{
struct server_state *sstate = malloc(sizeof(*sstate));
*sstate = (struct server_state){
.lock = PTHREAD_MUTEX_INITIALIZER,
.cond = PTHREAD_COND_INITIALIZER,
.is_server_started = false,
.config = test_config,
};
pthread_create(&sstate->tid, NULL, test_server_thread, sstate);
pthread_mutex_lock(&sstate->lock);
while (!sstate->is_server_started)
pthread_cond_wait(&sstate->cond, &sstate->lock);
pthread_mutex_unlock(&sstate->lock);
return sstate;
}
void test_server_stop(struct server_state *sstate)
{
ck_assert_ptr_ne(sstate, NULL);
pthread_cancel(sstate->tid);
pthread_join(sstate->tid, NULL);
free(sstate);
}
void test_config_cleanup(struct test_config *config)
{
if (!config->fds)
return;
for (int i = 0; i < config->nfds; i++)
close(config->fds[i]);
free(config->fds);
}
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