4 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
20 #include <sensor_log.h>
22 #include <attr/xattr.h>
28 , m_sock_type(SOCK_STREAM)
29 , m_send_flags(MSG_NOSIGNAL)
30 , m_recv_flags(MSG_NOSIGNAL)
32 memset(&m_addr, 0, sizeof(m_addr));
35 csocket::csocket(int sock_fd)
37 , m_sock_type(SOCK_STREAM)
38 , m_send_flags(MSG_NOSIGNAL)
39 , m_recv_flags(MSG_NOSIGNAL)
43 memset(&m_addr, 0, sizeof(m_addr));
46 csocket::csocket(const csocket &sock)
48 , m_sock_type(SOCK_STREAM)
49 , m_send_flags(MSG_NOSIGNAL)
50 , m_recv_flags(MSG_NOSIGNAL)
55 m_sock_fd = sock.m_sock_fd;
56 m_sock_type = sock.m_sock_type;
57 m_send_flags = sock.m_send_flags;
58 m_recv_flags = sock.m_recv_flags;
60 memcpy(&m_addr, &sock.m_addr, sizeof(sockaddr_un));
67 bool csocket::create(int sock_type)
69 m_sock_fd = socket(AF_UNIX, sock_type, 0);
72 _ERRNO(errno, _E, "Failed to create socket for %s", get_client_name());
76 m_sock_type = sock_type;
81 bool csocket::bind(const char *sock_path)
87 _E("%s's socket is invalid", get_client_name());
91 if (!access(sock_path, F_OK)) {
95 m_addr.sun_family = AF_UNIX;
97 strncpy(m_addr.sun_path, sock_path, strlen(sock_path));
99 length = strlen(m_addr.sun_path) + sizeof(m_addr.sun_family);
101 if (::bind(m_sock_fd, (struct sockaddr *)&m_addr, length) < 0) {
102 _ERRNO(errno, _E, "Failed to bind for socket[%d]", m_sock_fd);
107 socket_mode = (S_IRWXU | S_IRWXG | S_IRWXO);
108 if (chmod(sock_path, socket_mode) < 0) {
109 _ERRNO(errno, _E, "Failed to chmod for socket[%d]", m_sock_fd);
117 bool csocket::listen(const int max_connections)
120 _E("Socket(%d) is invalid", m_sock_fd);
124 if (::listen(m_sock_fd, max_connections) < 0) {
125 _ERRNO(errno, _E, "Failed to listen for socket[%d]", m_sock_fd);
133 bool csocket::accept(csocket& client_socket) const
135 const int TIMEOUT = 1;
137 int addr_length = sizeof(m_addr);
144 FD_SET(m_sock_fd, &read_fds);
149 err = ::select(m_sock_fd + 1, &read_fds, NULL, NULL, &tv);
151 _ERRNO(errno, _E, "Failed to select(), m_sock_fd : %d", m_sock_fd);
156 _E("socket is closed, m_sock_fd : %d", m_sock_fd);
164 if (FD_ISSET(m_sock_fd, &read_fds))
167 _ERRNO(errno, _E, "Failed to select(), msock_fd : %d", m_sock_fd);
171 _E("socket is closed, m_sock_fd : %d", m_sock_fd);
176 client_socket.m_sock_fd = ::accept(m_sock_fd, (sockaddr *)&m_addr, (socklen_t *)&addr_length);
177 if (!client_socket.is_valid())
179 } while (err == EINTR);
181 if (!client_socket.is_valid()) {
182 _ERRNO(errno, _E, "Failed to accept for socket[%d]", m_sock_fd);
189 ssize_t csocket::send_for_seqpacket(const void *buffer, size_t size) const
194 len = ::send(m_sock_fd, buffer, size, m_send_flags);
195 err = len < 0 ? errno : 0;
196 } while (err == EINTR);
199 _ERRNO(errno, _E, "Failed to send(%d, %#x, %d, %#x) = %d",
200 m_sock_fd, buffer, size, m_send_flags, len);
203 return err == 0 ? len : -err;
206 ssize_t csocket::recv_for_seqpacket(void* buffer, size_t size) const
211 len = ::recv(m_sock_fd, buffer, size, m_recv_flags);
215 } else if (len == 0) {
216 _E("recv(%d, %#p , %d) = %d, because the peer performed shutdown!",
217 m_sock_fd, buffer, size, len);
222 } while (err == EINTR);
224 if ((err == EAGAIN) || (err == EWOULDBLOCK))
228 _ERRNO(err, _E, "Failed to recv(%d, %#x, %d, %#x) = %d",
229 m_sock_fd, buffer, size, m_recv_flags, len);
232 return err == 0 ? len : -err;
235 ssize_t csocket::send_for_stream(const void *buffer, size_t size) const
239 size_t total_sent_size = 0;
242 len = ::send(m_sock_fd, (const void *)((uint8_t *)buffer + total_sent_size), size - total_sent_size, m_send_flags);
246 * If socket is not available to use it temporarily,
247 * EAGAIN(EWOULDBLOCK) or EINTR is returned by ::send().
248 * so in order to prevent that data are omitted, sleep&retry to send it
250 if ((errno == EINTR) || (errno == EAGAIN) || (errno == EWOULDBLOCK)) {
255 _ERRNO(errno, _E, "Failed to send(%d, %#p + %d, %d - %d) = %d for %s",
256 m_sock_fd, buffer, total_sent_size, size, total_sent_size,
257 len, get_client_name());
263 total_sent_size += len;
264 } while (total_sent_size < size);
266 return err == 0 ? total_sent_size : -err;
269 ssize_t csocket::recv_for_stream(void* buffer, size_t size) const
273 size_t total_recv_size = 0;
276 len = ::recv(m_sock_fd, (void *)((uint8_t *)buffer + total_recv_size), size - total_recv_size, m_recv_flags);
279 _E("recv(%d, %#p + %d, %d - %d) = %d, because the peer of %s performed shutdown!",
280 m_sock_fd, buffer, total_recv_size, size, total_recv_size, len, get_client_name());
287 * If socket is not available to use it temporarily,
288 * EAGAIN(EWOULDBLOCK) is returned by ::recv().
289 * so in order to prevent that data are omitted, sleep&retry to receive it
291 if ((errno != EINTR) || (errno == EAGAIN) || (errno == EWOULDBLOCK)) {
296 _ERRNO(errno, _E, "Failed to recv(%d, %#p + %d, %d - %d) = %d for %s",
297 m_sock_fd, buffer, total_recv_size, size, total_recv_size,
298 len, get_client_name());
304 total_recv_size += len;
305 } while (total_recv_size < size);
307 return err == 0 ? total_recv_size : -err;
310 ssize_t csocket::send(const void *buffer, size_t size) const
313 _E("Socket(%d) is invalid", m_sock_fd);
317 if (m_sock_type == SOCK_STREAM)
318 return send_for_stream(buffer, size);
320 return send_for_seqpacket(buffer, size);
323 ssize_t csocket::recv(void* buffer, size_t size) const
326 _E("Socket(%d) is invalid", m_sock_fd);
330 if (m_sock_type == SOCK_STREAM)
331 return recv_for_stream(buffer, size);
333 return recv_for_seqpacket(buffer, size);
336 bool csocket::connect(const char *sock_path)
338 const int TIMEOUT = 5;
342 bool prev_blocking_mode;
345 _E("%s's socket is invalid", get_client_name());
349 prev_blocking_mode = is_blocking_mode();
351 set_blocking_mode(false);
353 m_addr.sun_family = AF_UNIX;
355 strncpy(m_addr.sun_path, sock_path, strlen(sock_path));
357 addr_len = strlen(m_addr.sun_path) + sizeof(m_addr.sun_family);
359 if (::connect(m_sock_fd, (sockaddr *)&m_addr, addr_len) < 0) {
360 _ERRNO(errno, _E, "Failed to connect sock_fd: %d for %s",
361 m_sock_fd, get_client_name());
366 FD_SET(m_sock_fd, &write_fds);
372 ret = select(m_sock_fd + 1, NULL, &write_fds, NULL, &tv);
375 _ERRNO(errno, _E, "select error: sock_fd: %d\n for %s", m_sock_fd, get_client_name());
379 _ERRNO(errno, _E, "select timeout: %d seconds elapsed for %s", tv.tv_sec, get_client_name());
384 if (!FD_ISSET(m_sock_fd, &write_fds)) {
385 _ERRNO(errno, _E, "select failed for %s, nothing to write, m_sock_fd : %d", get_client_name(), m_sock_fd);
391 socklen_t len = sizeof(so_error);
393 if (getsockopt(m_sock_fd, SOL_SOCKET, SO_ERROR, &so_error, &len) == -1) {
394 _ERRNO(errno, _E, "getsockopt failed for %s, m_sock_fd : %d", get_client_name(), m_sock_fd);
400 _ERRNO(errno, _E, "SO_ERROR occurred for %s, m_sock_fd : %d, so_error : %d",
401 get_client_name(), m_sock_fd, so_error);
406 if (prev_blocking_mode)
407 set_blocking_mode(true);
412 bool csocket::set_blocking_mode(bool blocking)
417 _E("Socket(%d) is invalid", m_sock_fd);
421 flags = fcntl(m_sock_fd, F_GETFL);
424 _ERRNO(errno, _E, "fcntl(F_GETFL) failed for %s, m_sock_fd: %d", get_client_name(), m_sock_fd);
428 flags = blocking ? (flags & ~O_NONBLOCK) : (flags | O_NONBLOCK);
430 flags = fcntl(m_sock_fd, F_SETFL, flags);
433 _ERRNO(errno, _E, "fcntl(F_SETFL) failed for %s, m_sock_fd: %d", get_client_name(), m_sock_fd);
440 bool csocket::set_sock_type(void)
445 opt_len = sizeof(sock_type);
448 _E("Socket(%d) is invalid", m_sock_fd);
452 if (getsockopt(m_sock_fd, SOL_SOCKET, SO_TYPE, &sock_type, &opt_len) < 0) {
453 _ERRNO(errno, _E, "getsockopt(SOL_SOCKET, SO_TYPE) failed for %s, m_sock_fd: %d",
454 get_client_name(), m_sock_fd);
458 m_sock_type = sock_type;
462 bool csocket::set_connection_mode(void)
465 const int TIMEOUT = 5;
467 set_blocking_mode(true);
473 _E("Socket(%d) is invalid", m_sock_fd);
477 if (setsockopt(m_sock_fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
478 _ERRNO(errno, _E, "Set SO_RCVTIMEO failed for %s, m_sock_fd : %d", get_client_name(), m_sock_fd);
483 m_send_flags = MSG_NOSIGNAL;
484 m_recv_flags = MSG_NOSIGNAL;
489 bool csocket::set_transfer_mode(void)
491 set_blocking_mode(false);
493 m_send_flags = MSG_DONTWAIT | MSG_NOSIGNAL;
494 m_recv_flags = MSG_DONTWAIT | MSG_NOSIGNAL;
499 bool csocket::is_blocking_mode(void)
504 _E("Socket(%d) is invalid", m_sock_fd);
508 flags = fcntl(m_sock_fd, F_GETFL);
511 _ERRNO(errno, _E, "fcntl(F_GETFL) failed for %s, m_sock_fd: %d", get_client_name(), m_sock_fd);
515 return !(flags & O_NONBLOCK);
518 bool csocket::is_valid(void) const
520 return (m_sock_fd >= 0);
523 int csocket::get_socket_fd(void) const
528 bool csocket::close(void)
530 if (m_sock_fd >= 0) {
531 if (::close(m_sock_fd) < 0) {
532 _ERRNO(errno, _E, "Failed to close socket[%d]", m_sock_fd);