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/*
* Listener.cpp
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Listener.h"
#include "ServerConnection.h"
#include <cerrno>
#include <cstring>
#include <fcntl.h>
#include <iostream>
namespace Mad {
namespace Net {
Listener::Listener(const std::string &x905CertFile0, const std::string &x905KeyFile0, const IPAddress &address0) throw(ConnectionException)
: x905CertFile(x905CertFile0), x905KeyFile(x905KeyFile0), address(address0) {
gnutls_dh_params_init(&dh_params);
gnutls_dh_params_generate2(dh_params, 768);
sock = socket(PF_INET, SOCK_STREAM, 0);
if(sock < 0)
throw ConnectionException("socket()", std::strerror(errno));
// Set non-blocking flag
int flags = fcntl(sock, F_GETFL, 0);
if(flags < 0) {
close(sock);
throw ConnectionException("fcntl()", std::strerror(errno));
}
fcntl(sock, F_SETFL, flags | O_NONBLOCK);
// Don't linger
struct linger linger = {1, 0};
setsockopt(sock, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger));
if(bind(sock, address.getSockAddr(), address.getSockAddrLength()) < 0) {
close(sock);
throw ConnectionException("bind()", std::strerror(errno));
}
if(listen(sock, 64) < 0) {
close(sock);
throw ConnectionException("listen()", std::strerror(errno));
}
}
Listener::~Listener() {
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end(); ++con) {
(*con)->disconnect();
delete *con;
}
shutdown(sock, SHUT_RDWR);
close(sock);
gnutls_dh_params_deinit(dh_params);
}
std::vector<struct pollfd> Listener::getPollfds() const {
std::vector<struct pollfd> pollfds;
struct pollfd fd = {sock, POLLIN, 0};
pollfds.push_back(fd);
for(std::list<ServerConnection*>::const_iterator con = connections.begin(); con != connections.end(); ++con)
pollfds.push_back((*con)->getPollfd());
return pollfds;
}
ServerConnection* Listener::getConnection(const std::map<int,const short*> &pollfdMap) {
// TODO: Logging
int sd;
struct sockaddr_in sa;
socklen_t addrlen = sizeof(sa);
while((sd = accept(sock, (struct sockaddr*)&sa, &addrlen)) >= 0) {
connections.push_back(new ServerConnection(sd, IPAddress(sa), dh_params, x905CertFile, x905KeyFile));
addrlen = sizeof(sa);
}
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end(); ++con) {
std::map<int,const short*>::const_iterator events = pollfdMap.find((*con)->getSocket());
if(events != pollfdMap.end()) {
if(*events->second)
(*con)->sendReceive(*events->second);
}
else
(*con)->sendReceive();
}
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end();) {
if(!(*con)->isConnected()) {
delete *con;
connections.erase(con++); // Erase unincremented iterator
continue;
}
if(!(*con)->isConnecting()) {
ServerConnection *connection = *con;
connections.erase(con);
return connection;
}
++con;
}
return 0;
}
}
}
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