339 lines
8.9 KiB
C++
339 lines
8.9 KiB
C++
/*
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "JackSocket.h"
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#include "JackConstants.h"
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#include "JackTools.h"
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#include "JackError.h"
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#include "promiscuous.h"
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#include <string.h>
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#include <stdio.h>
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#include <pthread.h>
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#include <fcntl.h>
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namespace Jack
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{
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static void BuildName(const char* client_name, char* res, const char* dir, int which, int size, bool promiscuous)
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{
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char ext_client_name[SYNC_MAX_NAME_SIZE + 1];
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JackTools::RewriteName(client_name, ext_client_name);
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if (promiscuous) {
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snprintf(res, size, "%s/jack_%s_%d", dir, ext_client_name, which);
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} else {
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snprintf(res, size, "%s/jack_%s_%d_%d", dir, ext_client_name, JackTools::GetUID(), which);
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}
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}
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JackClientSocket::JackClientSocket(): JackClientRequestInterface(), fSocket(-1), fTimeOut(0)
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{
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const char* promiscuous = getenv("JACK_PROMISCUOUS_SERVER");
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fPromiscuous = (promiscuous != NULL);
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fPromiscuousGid = jack_group2gid(promiscuous);
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}
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JackClientSocket::JackClientSocket(int socket): JackClientRequestInterface(), fSocket(socket),fTimeOut(0), fPromiscuous(false), fPromiscuousGid(-1)
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{}
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#if defined(__sun__) || defined(sun)
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void JackClientSocket::SetReadTimeOut(long sec)
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{
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int flags;
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fTimeOut = sec;
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if ((flags = fcntl(fSocket, F_GETFL, 0)) < 0) {
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jack_error("JackClientSocket::SetReadTimeOut error in fcntl F_GETFL");
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return;
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}
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flags |= O_NONBLOCK;
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if (fcntl(fSocket, F_SETFL, flags) < 0) {
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jack_error("JackClientSocket::SetReadTimeOut error in fcntl F_SETFL");
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return;
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}
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}
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void JackClientSocket::SetWriteTimeOut(long sec)
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{
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int flags;
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fTimeOut = sec;
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if ((flags = fcntl(fSocket, F_GETFL, 0)) < 0) {
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jack_error("JackClientSocket::SetWriteTimeOut error in fcntl F_GETFL");
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return;
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}
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flags |= O_NONBLOCK;
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if (fcntl(fSocket, F_SETFL, flags) < 0) {
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jack_error("JackClientSocket::SetWriteTimeOut error in fcntl F_SETFL");
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return;
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}
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}
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#else
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void JackClientSocket::SetReadTimeOut(long sec)
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{
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struct timeval timout;
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timout.tv_sec = sec;
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timout.tv_usec = 0;
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if (setsockopt(fSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
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jack_error("SetReadTimeOut fd = %ld err = %s", fSocket, strerror(errno));
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}
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}
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void JackClientSocket::SetWriteTimeOut(long sec)
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{
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struct timeval timout;
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timout.tv_sec = sec ;
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timout.tv_usec = 0;
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if (setsockopt(fSocket, SOL_SOCKET, SO_SNDTIMEO, (const char*)&timout, sizeof(timeval)) < 0) {
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jack_error("SetWriteTimeOut fd = %ld err = %s", fSocket, strerror(errno));
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}
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}
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#endif
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void JackClientSocket::SetNonBlocking(bool onoff)
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{
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if (onoff) {
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long flags = 0;
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if (fcntl(fSocket, F_SETFL, flags | O_NONBLOCK) < 0) {
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jack_error("SetNonBlocking fd = %ld err = %s", fSocket, strerror(errno));
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}
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}
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}
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int JackClientSocket::Connect(const char* dir, const char* name, int which) // A revoir : utilisation de "which"
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{
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struct sockaddr_un addr;
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if ((fSocket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
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jack_error("Cannot create socket err = %s", strerror(errno));
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return -1;
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}
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addr.sun_family = AF_UNIX;
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BuildName(name, addr.sun_path, dir, which, sizeof(addr.sun_path), fPromiscuous);
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jack_log("JackClientSocket::Connect : addr.sun_path %s", addr.sun_path);
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if (connect(fSocket, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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jack_error("Cannot connect to server socket err = %s", strerror(errno));
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close(fSocket);
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fSocket = -1;
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return -1;
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}
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#ifdef __APPLE__
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int on = 1;
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if (setsockopt(fSocket, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&on, sizeof(on)) < 0) {
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jack_log("setsockopt SO_NOSIGPIPE fd = %ld err = %s", fSocket, strerror(errno));
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}
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#endif
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return 0;
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}
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int JackClientSocket::Close()
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{
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jack_log("JackClientSocket::Close");
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if (fSocket > 0) {
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shutdown(fSocket, SHUT_RDWR);
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close(fSocket);
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fSocket = -1;
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return 0;
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} else {
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return -1;
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}
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}
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int JackClientSocket::Read(void* data, int len)
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{
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int res;
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#if defined(__sun__) || defined(sun)
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if (fTimeOut > 0) {
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struct timeval tv;
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fd_set fdset;
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ssize_t res;
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tv.tv_sec = fTimeOut;
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tv.tv_usec = 0;
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FD_ZERO(&fdset);
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FD_SET(fSocket, &fdset);
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do {
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res = select(fSocket + 1, &fdset, NULL, NULL, &tv);
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} while (res < 0 && errno == EINTR);
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if (res < 0) {
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return res;
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} else if (res == 0) {
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return -1;
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}
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}
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#endif
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if ((res = read(fSocket, data, len)) != len) {
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if (errno == EWOULDBLOCK || errno == EAGAIN) {
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jack_error("JackClientSocket::Read time out");
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return 0; // For a non blocking socket, a read failure is not considered as an error
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} else if (res != 0) {
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jack_error("Cannot read socket fd = %d err = %s", fSocket, strerror(errno));
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//return 0;
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return -1;
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} else {
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jack_error("Cannot read socket fd = %d err = %s", fSocket, strerror(errno));
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return -1;
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}
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} else {
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return 0;
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}
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}
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int JackClientSocket::Write(void* data, int len)
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{
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int res;
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#if defined(__sun__) || defined(sun)
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if (fTimeOut > 0) {
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struct timeval tv;
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fd_set fdset;
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ssize_t res;
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tv.tv_sec = fTimeOut;
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tv.tv_usec = 0;
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FD_ZERO(&fdset);
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FD_SET(fSocket, &fdset);
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do {
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res = select(fSocket + 1, NULL, &fdset, NULL, &tv);
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} while (res < 0 && errno == EINTR);
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if (res < 0) {
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return res;
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} else if (res == 0) {
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return -1;
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}
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}
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#endif
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if ((res = write(fSocket, data, len)) != len) {
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if (errno == EWOULDBLOCK || errno == EAGAIN) {
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jack_log("JackClientSocket::Write time out");
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return 0; // For a non blocking socket, a write failure is not considered as an error
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} else if (res != 0) {
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jack_error("Cannot write socket fd = %ld err = %s", fSocket, strerror(errno));
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//return 0;
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return -1;
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} else {
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jack_error("Cannot write socket fd = %ld err = %s", fSocket, strerror(errno));
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return -1;
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}
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} else {
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return 0;
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}
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}
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JackServerSocket::JackServerSocket(): fSocket( -1)
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{
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const char* promiscuous = getenv("JACK_PROMISCUOUS_SERVER");
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fPromiscuous = (promiscuous != NULL);
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fPromiscuousGid = jack_group2gid(promiscuous);
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}
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int JackServerSocket::Bind(const char* dir, const char* name, int which) // A revoir : utilisation de "which"
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{
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struct sockaddr_un addr;
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if ((fSocket = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
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jack_error("Cannot create server socket err = %s", strerror(errno));
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return -1;
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}
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addr.sun_family = AF_UNIX;
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// Socket name has to be kept in fName to be "unlinked".
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BuildName(name, fName, dir, which, sizeof(addr.sun_path), fPromiscuous);
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strncpy(addr.sun_path, fName, sizeof(addr.sun_path) - 1);
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jack_log("JackServerSocket::Bind : addr.sun_path %s", addr.sun_path);
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unlink(fName); // Security...
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if (bind(fSocket, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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jack_error("Cannot bind server to socket err = %s", strerror(errno));
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goto error;
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}
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if (listen(fSocket, 100) < 0) {
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jack_error("Cannot enable listen on server socket err = %s", strerror(errno));
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goto error;
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}
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if (fPromiscuous && (jack_promiscuous_perms(-1, fName, fPromiscuousGid) < 0))
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goto error;
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return 0;
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error:
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unlink(fName);
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close(fSocket);
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fSocket = -1;
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return -1;
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}
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JackClientSocket* JackServerSocket::Accept()
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{
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struct sockaddr_un client_addr;
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socklen_t client_addrlen;
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memset(&client_addr, 0, sizeof(client_addr));
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client_addrlen = sizeof(client_addr);
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int fd = accept(fSocket, (struct sockaddr*)&client_addr, &client_addrlen);
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if (fd < 0) {
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jack_error("Cannot accept new connection err = %s", strerror(errno));
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return 0;
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} else {
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return new JackClientSocket(fd);
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}
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}
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int JackServerSocket::Close()
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{
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if (fSocket > 0) {
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jack_log("JackServerSocket::Close %s", fName);
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shutdown(fSocket, SHUT_RDWR);
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close(fSocket);
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unlink(fName);
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fSocket = -1;
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return 0;
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} else {
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return -1;
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}
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}
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} // end of namespace
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