JackSocketServerChannel.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 "JackSocketServerChannel.h"
#include "JackRequest.h"
#include "JackServer.h"
#include "JackLockedEngine.h"
#include "JackGlobals.h"
#include "JackServerGlobals.h"
#include "JackClient.h"
#include "JackTools.h"
#include "JackNotification.h"
#include "JackException.h"
#include <assert.h>
#include <signal.h>
using namespace std;
namespace Jack
{
JackSocketServerChannel::JackSocketServerChannel():
fThread(this), fDecoder(NULL)
{
fPollTable = NULL;
fRebuild = true;
}
JackSocketServerChannel::~JackSocketServerChannel()
{
delete[] fPollTable;
}
int JackSocketServerChannel::Open(const char* server_name, JackServer* server)
{
jack_log("JackSocketServerChannel::Open");
// Prepare request socket
if (fRequestListenSocket.Bind(jack_server_dir, server_name, 0) < 0) {
jack_log("JackSocketServerChannel::Open : cannot create result listen socket");
return -1;
}
// Prepare for poll
BuildPoolTable();
fDecoder = new JackRequestDecoder(server, this);
fServer = server;
return 0;
}
void JackSocketServerChannel::Close()
{
fRequestListenSocket.Close();
// Close remaining client sockets
std::map<int, std::pair<int, JackClientSocket*> >::iterator it;
for (it = fSocketTable.begin(); it != fSocketTable.end(); it++) {
pair<int, JackClientSocket*> elem = (*it).second;
JackClientSocket* socket = elem.second;
assert(socket);
socket->Close();
delete socket;
}
delete fDecoder;
fDecoder = NULL;
}
int JackSocketServerChannel::Start()
{
if (fThread.Start() != 0) {
jack_error("Cannot start Jack server listener");
return -1;
} else {
return 0;
}
}
void JackSocketServerChannel::Stop()
{
fThread.Stop();
}
void JackSocketServerChannel::ClientCreate()
{
jack_log("JackSocketServerChannel::ClientCreate socket");
JackClientSocket* socket = fRequestListenSocket.Accept();
if (socket) {
fSocketTable[socket->GetFd()] = make_pair(-1, socket);
fRebuild = true;
} else {
jack_error("Client socket cannot be created");
}
}
int JackSocketServerChannel::GetFd(JackClientSocket* socket_aux)
{
std::map<int, std::pair<int, JackClientSocket*> >::iterator it;
for (it = fSocketTable.begin(); it != fSocketTable.end(); it++) {
pair<int, JackClientSocket*> elem = (*it).second;
JackClientSocket* socket = elem.second;
if (socket_aux == socket) {
return (*it).first;
}
}
return -1;
}
void JackSocketServerChannel::ClientAdd(detail::JackChannelTransactionInterface* socket_aux, JackClientOpenRequest* req, JackClientOpenResult *res)
{
int refnum = -1;
res->fResult = fServer->GetEngine()->ClientExternalOpen(req->fName, req->fPID, req->fUUID, &refnum, &res->fSharedEngine, &res->fSharedClient, &res->fSharedGraph);
if (res->fResult == 0) {
JackClientSocket* socket = dynamic_cast<JackClientSocket*>(socket_aux);
assert(socket);
int fd = GetFd(socket);
assert(fd >= 0);
fSocketTable[fd].first = refnum;
fRebuild = true;
jack_log("JackSocketServerChannel::ClientAdd ref = %d fd = %d", refnum, fd);
#ifdef __APPLE__
int on = 1;
if (setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, (const char*)&on, sizeof(on)) < 0) {
jack_log("JackSocketServerChannel::ClientAdd : setsockopt SO_NOSIGPIPE fd = %ld err = %s", fd, strerror(errno));
}
#endif
} else {
jack_error("Cannot create new client");
}
}
void JackSocketServerChannel::ClientRemove(detail::JackChannelTransactionInterface* socket_aux, int refnum)
{
JackClientSocket* socket = dynamic_cast<JackClientSocket*>(socket_aux);
assert(socket);
int fd = GetFd(socket);
assert(fd >= 0);
jack_log("JackSocketServerChannel::ClientRemove ref = %d fd = %d", refnum, fd);
fSocketTable.erase(fd);
socket->Close();
delete socket;
fRebuild = true;
}
void JackSocketServerChannel::ClientKill(int fd)
{
pair<int, JackClientSocket*> elem = fSocketTable[fd];
JackClientSocket* socket = elem.second;
int refnum = elem.first;
assert(socket);
jack_log("JackSocketServerChannel::ClientKill ref = %d fd = %d", refnum, fd);
if (refnum == -1) { // Should never happen... correspond to a client that started the socket but never opened...
jack_log("Client was not opened : probably correspond to server_check");
} else {
fServer->GetEngine()->ClientKill(refnum);
}
fSocketTable.erase(fd);
socket->Close();
delete socket;
fRebuild = true;
}
void JackSocketServerChannel::BuildPoolTable()
{
if (fRebuild) {
fRebuild = false;
delete[] fPollTable;
fPollTable = new pollfd[fSocketTable.size() + 1];
jack_log("JackSocketServerChannel::BuildPoolTable size = %d", fSocketTable.size() + 1);
// First fd is the server request socket
fPollTable[0].fd = fRequestListenSocket.GetFd();
fPollTable[0].events = POLLIN | POLLERR;
// Next fd for clients
map<int, pair<int, JackClientSocket*> >::iterator it;
int i;
for (i = 1, it = fSocketTable.begin(); it != fSocketTable.end(); it++, i++) {
jack_log("JackSocketServerChannel::BuildPoolTable fSocketTable i = %ld fd = %ld", i, it->first);
fPollTable[i].fd = it->first;
fPollTable[i].events = POLLIN | POLLPRI | POLLERR | POLLHUP | POLLNVAL;
}
}
}
bool JackSocketServerChannel::Init()
{
sigset_t set;
sigemptyset(&set);
sigaddset(&set, SIGPIPE);
pthread_sigmask(SIG_BLOCK, &set, 0);
return true;
}
bool JackSocketServerChannel::Execute()
{
try {
// Global poll
if ((poll(fPollTable, fSocketTable.size() + 1, 10000) < 0) && (errno != EINTR)) {
jack_error("JackSocketServerChannel::Execute : engine poll failed err = %s request thread quits...", strerror(errno));
return false;
} else {
// Poll all clients
for (unsigned int i = 1; i < fSocketTable.size() + 1; i++) {
int fd = fPollTable[i].fd;
jack_log("JackSocketServerChannel::Execute : fPollTable i = %ld fd = %ld", i, fd);
if (fPollTable[i].revents & ~POLLIN) {
jack_log("JackSocketServerChannel::Execute : poll client error err = %s", strerror(errno));
ClientKill(fd);
} else if (fPollTable[i].revents & POLLIN) {
JackClientSocket* socket = fSocketTable[fd].second;
// Decode header
JackRequest header;
if (header.Read(socket) < 0) {
jack_log("JackSocketServerChannel::Execute : cannot decode header");
ClientKill(fd);
// Decode request
} else {
// Result is not needed here
fDecoder->HandleRequest(socket, header.fType);
}
}
}
// Check the server request socket */
if (fPollTable[0].revents & POLLERR) {
jack_error("Error on server request socket err = %s", strerror(errno));
}
if (fPollTable[0].revents & POLLIN) {
ClientCreate();
}
}
BuildPoolTable();
return true;
} catch (JackQuitException& e) {
jack_log("JackSocketServerChannel::Execute : JackQuitException");
return false;
}
}
} // end of namespace
Jack
Definition: JackAC3Encoder.cpp:30
std
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
Jack::JackSocketServerChannel::Init
bool Init()
Definition: JackSocketServerChannel.cpp:211
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108