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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* socket.cc
*
* Mon Nov 8 10:49:33 CET 2004
* Copyright 2004 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "socket.h"
#include <errno.h>
// for gethostbyname
#include <netdb.h>
#include <hugin.hpp>
Socket::Socket()
{
connected = false;
err = 0;
}
Socket::Socket(u_short port)
{
connected = false;
err = 0;
// create socket
ssocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
// PF_INET: ipv4, PF_INET6: ipv6
// tcp: IPPROTO_TCP
// upd: IPPROTO_UDP
if (ssocket < 0) {
err = 1;
ERR(socket, "Socket: socket() failed!");
}
memset((char *) &socketaddr, 0, sizeof(socketaddr));
socketaddr.sin_family = AF_INET; // Use "internet protocol" IP
socketaddr.sin_port = htons(port); // connect to that port
socketaddr.sin_addr.s_addr = INADDR_ANY;
// INADDR_ANY puts your IP address automatically
}
Socket::~Socket()
{
// if(err) perror("Socket: No socket to kill");
// printf("Socket: I'm melting...[%d]\n", ssocket);
if(ssocket >= 0) close(ssocket); // close server socket
}
Socket Socket::slisten()
{
Socket s = Socket();
if(err) {
ERR(socket, "Socket: No socket present!");
return s;
}
if(!connected) {
// bind socket to address specified by "sa" parameter
err = bind(ssocket, (struct sockaddr*)&socketaddr, sizeof(socketaddr));
if (err) {
ERR(socket, "Socket: bind() failed! %s", strerror(errno));
return s;
}
// start listen for connection - kernel will accept connection
// requests (max 5 in queue)
err = listen(ssocket, 5);
if(err) {
ERR(socket, "Socket: listen() failed! %s", strerror(errno));
return s;
}
}
// accept new connection and get its connection descriptor
int csalen = sizeof(s.socketaddr);
{
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(ssocket, &rfds);
int retval = select(ssocket + 1, &rfds, NULL, NULL, NULL);
if (retval == -1) {
if(errno == EINTR) {
connected = true;
s.connected = true;
return s;
}
ERR(socket, "select() failed! %s", strerror(errno));
} else if(retval) {
if(FD_ISSET(ssocket, &rfds)) {
s.ssocket = accept(ssocket,
(struct sockaddr*)&s.socketaddr,
(socklen_t*)&csalen);
ERR(socket, "accept() failed! %s", strerror(errno));
}
} else {
// We don't do timeout
}
}
if (s.ssocket < 0) {
s.connected = false;
err = 1;
ERR(socket, "Socket: accept() failed! %s", strerror(errno));
return s;
}
connected = true;
s.connected = true;
return s;
}
int Socket::sconnect(char *addr)
{
if(err) {
connected = false;
ERR(socket, "Socket: No socket present!");
return err;
}
// Do DNS lookup
char *ip;
struct in_addr **addr_list;
struct hostent *he;
he = gethostbyname(addr);
if(!he || !he->h_length) {
/*
throw TCPConnectException(addr, toString(port),
std::string("host lookup failed: ") + hstrerror(h_errno));
*/
}
addr_list = (struct in_addr **)he->h_addr_list;
// Get first value. We know for sure that there are at least one.
ip = inet_ntoa(*addr_list[0]);
socketaddr.sin_addr.s_addr = inet_addr(ip);
err = connect(ssocket, (struct sockaddr*)&socketaddr, sizeof(socketaddr));
if (err) {
connected = false;
ERR(socket, "Socket: connect() failed! %s", strerror(errno));
return err;
}
// fprintf(stderr, "Socket connected\n");
connected = true;
return 0;
}
bool Socket::isConnected()
{
return connected;
}
bool Socket::hasError()
{
return err != 0;
}
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