JackSocket.cpp
/*
Copyright (C) 2004-2008 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "JackSocket.h"
#include "JackConstants.h"
#include "JackTools.h"
#include "JackError.h"
#include <string.h>
#include <stdio.h>
#include <pthread.h>
#include <fcntl.h>
namespace Jack
{
static void BuildName(const char* client_name, char* res, const char* dir, int which, int size)
{
char ext_client_name[SYNC_MAX_NAME_SIZE + 1];
JackTools::RewriteName(client_name, ext_client_name);
if (getenv("JACK_PROMISCUOUS_SERVER")) {
snprintf(res, size, "%s/jack_%s_%d", dir, ext_client_name, which);
} else {
snprintf(res, size, "%s/jack_%s_%d_%d", dir, ext_client_name, JackTools::GetUID(), which);
}
}
JackClientSocket::JackClientSocket(int socket): JackClientRequestInterface(), fSocket(socket),fTimeOut(0)
{}
#if defined(__sun__) || defined(sun)
void JackClientSocket::SetReadTimeOut(long sec)
{
int flags;
fTimeOut = sec;
if ((flags = fcntl(fSocket, F_GETFL, 0)) < 0) {
jack_error("JackClientSocket::SetReadTimeOut error in fcntl F_GETFL");
return;
}
flags |= O_NONBLOCK;
if (fcntl(fSocket, F_SETFL, flags) < 0) {
jack_error("JackClientSocket::SetReadTimeOut error in fcntl F_SETFL");
return;
}
}
void JackClientSocket::SetWriteTimeOut(long sec)
{
int flags;
fTimeOut = sec;
if ((flags = fcntl(fSocket, F_GETFL, 0)) < 0) {
jack_error("JackClientSocket::SetWriteTimeOut error in fcntl F_GETFL");
return;
}
flags |= O_NONBLOCK;
if (fcntl(fSocket, F_SETFL, flags) < 0) {
jack_error("JackClientSocket::SetWriteTimeOut error in fcntl F_SETFL");
return;
}
}
#else
void JackClientSocket::SetReadTimeOut(long sec)
{
struct timeval timout;
timout.tv_sec = sec;
timout.tv_usec = 0;
if (setsockopt(fSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
jack_error("SetReadTimeOut fd = %ld err = %s", fSocket, strerror(errno));
}
}
void JackClientSocket::SetWriteTimeOut(long sec)
{
struct timeval timout;
timout.tv_sec = sec ;
timout.tv_usec = 0;
if (setsockopt(fSocket, SOL_SOCKET, SO_SNDTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
jack_error("SetWriteTimeOut fd = %ld err = %s", fSocket, strerror(errno));
}
}
#endif
void JackClientSocket::SetNonBlocking(bool onoff)
{
if (onoff) {
long flags = 0;
if (fcntl(fSocket, F_SETFL, flags | O_NONBLOCK) < 0) {
jack_error("SetNonBlocking fd = %ld err = %s", fSocket, strerror(errno));
}
}
}
int JackClientSocket::Connect(const char* dir, const char* name, int which) // A revoir : utilisation de "which"
{
struct sockaddr_un addr;
if ((fSocket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
jack_error("Cannot create socket err = %s", strerror(errno));
return -1;
}
addr.sun_family = AF_UNIX;
BuildName(name, addr.sun_path, dir, which, sizeof(addr.sun_path));
jack_log("JackClientSocket::Connect : addr.sun_path %s", addr.sun_path);
if (connect(fSocket, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
jack_error("Cannot connect to server socket err = %s", strerror(errno));
close(fSocket);
return -1;
}
#ifdef __APPLE__
int on = 1;
if (setsockopt(fSocket, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&on, sizeof(on)) < 0) {
jack_log("setsockopt SO_NOSIGPIPE fd = %ld err = %s", fSocket, strerror(errno));
}
#endif
return 0;
}
int JackClientSocket::Close()
{
jack_log("JackClientSocket::Close");
if (fSocket > 0) {
shutdown(fSocket, SHUT_RDWR);
close(fSocket);
fSocket = -1;
return 0;
} else {
return -1;
}
}
int JackClientSocket::Read(void* data, int len)
{
int res;
#if defined(__sun__) || defined(sun)
if (fTimeOut > 0) {
struct timeval tv;
fd_set fdset;
ssize_t res;
tv.tv_sec = fTimeOut;
tv.tv_usec = 0;
FD_ZERO(&fdset);
FD_SET(fSocket, &fdset);
do {
res = select(fSocket + 1, &fdset, NULL, NULL, &tv);
} while (res < 0 && errno == EINTR);
if (res < 0) {
return res;
} else if (res == 0) {
return -1;
}
}
#endif
if ((res = read(fSocket, data, len)) != len) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
jack_error("JackClientSocket::Read time out");
return 0; // For a non blocking socket, a read failure is not considered as an error
} else if (res != 0) {
jack_error("Cannot read socket fd = %d err = %s", fSocket, strerror(errno));
//return 0;
return -1;
} else {
jack_error("Cannot read socket fd = %d err = %s", fSocket, strerror(errno));
return -1;
}
} else {
return 0;
}
}
int JackClientSocket::Write(void* data, int len)
{
int res;
#if defined(__sun__) || defined(sun)
if (fTimeOut > 0) {
struct timeval tv;
fd_set fdset;
ssize_t res;
tv.tv_sec = fTimeOut;
tv.tv_usec = 0;
FD_ZERO(&fdset);
FD_SET(fSocket, &fdset);
do {
res = select(fSocket + 1, NULL, &fdset, NULL, &tv);
} while (res < 0 && errno == EINTR);
if (res < 0) {
return res;
} else if (res == 0) {
return -1;
}
}
#endif
if ((res = write(fSocket, data, len)) != len) {
if (errno == EWOULDBLOCK || errno == EAGAIN) {
jack_log("JackClientSocket::Write time out");
return 0; // For a non blocking socket, a write failure is not considered as an error
} else if (res != 0) {
jack_error("Cannot write socket fd = %ld err = %s", fSocket, strerror(errno));
//return 0;
return -1;
} else {
jack_error("Cannot write socket fd = %ld err = %s", fSocket, strerror(errno));
return -1;
}
} else {
return 0;
}
}
int JackServerSocket::Bind(const char* dir, const char* name, int which) // A revoir : utilisation de "which"
{
struct sockaddr_un addr;
if ((fSocket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
jack_error("Cannot create server socket err = %s", strerror(errno));
return -1;
}
addr.sun_family = AF_UNIX;
// Socket name has to be kept in fName to be "unlinked".
BuildName(name, fName, dir, which, sizeof(addr.sun_path));
strncpy(addr.sun_path, fName, sizeof(addr.sun_path) - 1);
jack_log("JackServerSocket::Bind : addr.sun_path %s", addr.sun_path);
unlink(fName); // Security...
if (bind(fSocket, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
jack_error("Cannot bind server to socket err = %s", strerror(errno));
goto error;
}
if (listen(fSocket, 100) < 0) {
jack_error("Cannot enable listen on server socket err = %s", strerror(errno));
goto error;
}
return 0;
error:
unlink(fName);
close(fSocket);
return -1;
}
JackClientSocket* JackServerSocket::Accept()
{
struct sockaddr_un client_addr;
socklen_t client_addrlen;
memset(&client_addr, 0, sizeof(client_addr));
client_addrlen = sizeof(client_addr);
int fd = accept(fSocket, (struct sockaddr*)&client_addr, &client_addrlen);
if (fd < 0) {
jack_error("Cannot accept new connection err = %s", strerror(errno));
return 0;
} else {
return new JackClientSocket(fd);
}
}
int JackServerSocket::Close()
{
if (fSocket > 0) {
jack_log("JackServerSocket::Close %s", fName);
shutdown(fSocket, SHUT_RDWR);
close(fSocket);
unlink(fName);
fSocket = -1;
return 0;
} else {
return -1;
}
}
} // end of namespace
Jack
Definition: JackAC3Encoder.cpp:30
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108