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// Cyphesis Online RPG Server and AI Engine
// Copyright (C) 2000-2004 Alistair Riddoch
//
// 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 2 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, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
// $Id: CommListener.cpp,v 1.41 2008-04-28 17:26:10 alriddoch Exp $
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "CommListener.h"
#include "CommRemoteClient.h"
#include "CommServer.h"
#include "common/id.h"
#include "common/log.h"
#include "common/debug.h"
#include "common/compose.hpp"
#include "common/system.h"
#include <skstream/skstream.h>
#include <iostream>
#include <cstring>
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif // HAVE_ARPA_INET_H
#include <unistd.h>
#include <errno.h>
#include <cassert>
static const bool debug_flag = false;
/// \brief Constructor for listener socket object.
///
/// @param svr Reference to the object that manages all socket communication.
CommListener::CommListener(CommServer & svr) : CommSocket(svr)
{
}
CommListener::~CommListener()
{
}
int CommListener::getFd() const
{
return m_listener.getSocket();
}
bool CommListener::eof()
{
return false;
}
bool CommListener::isOpen() const
{
return m_listener.is_open();
}
int CommListener::read()
{
accept();
// Accept errors are not returned, as the listen socket should not
// be removed.
return 0;
}
void CommListener::dispatch()
{
}
/// \brief Create and bind the listen socket.
int CommListener::setup(int port)
{
m_listener.open(port);
if (!m_listener.is_open()) {
return -1;
}
// Set a linger time of 0 seconds, so that the socket is got rid
// of quickly.
int socket = m_listener.getSocket();
struct linger {
int l_onoff;
int l_linger;
} listenLinger = { 1, 0 };
::setsockopt(socket, SOL_SOCKET, SO_LINGER, (char *)&listenLinger,
sizeof(listenLinger));
// Ensure the address can be reused once we are done with it.
int flag = 1;
::setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&flag, sizeof(flag));
return 0;
}
/// \brief Accept a new connect to the listen socket.
int CommListener::accept()
{
// Low level socket code to accept a new client connection, and create
// the associated commclient object.
struct sockaddr_storage sst;
SOCKLEN addr_len = sizeof(sst);
debug(std::cout << "Accepting.." << std::endl << std::flush;);
int asockfd = ::accept(m_listener.getSocket(),
(struct sockaddr *)&sst, &addr_len);
if (asockfd < 0) {
log(ERROR,
String::compose("System error accepting network connection: %1",
strerror(errno)));
return -1;
}
debug(std::cout << "Accepted" << std::endl << std::flush;);
void * adr = 0;
if (sst.ss_family == AF_INET) {
adr = &((sockaddr_in&)sst).sin_addr;
} else if (sst.ss_family == AF_INET6) {
adr = &((sockaddr_in6&)sst).sin6_addr;
}
char buf[INET6_ADDRSTRLEN];
const char * address = 0;
#ifdef HAVE_INET_NTOP
if (adr != 0) {
address = ::inet_ntop(sst.ss_family, adr, buf, INET6_ADDRSTRLEN);
} else {
log(WARNING, "Unable to determine address type for connection");
}
#elif HAVE_GETNAMEINFO
// FIXME Get things using getnameinfo with NI_NUMERICHOST
#endif // HAVE_INET_NTOP
if (address == 0) {
log(WARNING, "Unable to determine remote address for connection");
logSysError(WARNING);
address = "unknown";
}
return create(asockfd, address);
}
int CommListener::create(int asockfd, const char * address)
{
std::string connection_id;
if (newId(connection_id) < 0) {
log(ERROR, "Unable to accept connection as no ID available");
closesocket(asockfd);
return -1;
}
CommRemoteClient * newcli = new CommRemoteClient(m_commServer, asockfd,
address, connection_id);
newcli->setup();
// Add this new client to the list.
m_commServer.addSocket(newcli);
m_commServer.addIdle(newcli);
return 0;
}
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