/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            tcp_socket.cc
 *
 *  Fri Aug 18 00:12:34 CEST 2006
 *  Copyright  2006 Bent Bisballe Nyeng
 *  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 "tcp_socket.h"

#include <errno.h>

// for connect, listen, bind and accept
#include <sys/types.h>
#include <sys/socket.h>

// For socket
#include <sys/types.h>
#include <sys/socket.h>

// For TCP
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>

// For inet_ntoa
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

TCPSocket::TCPSocket(int port, std::string addr) : Socket(port, addr)
{
  sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); 
}

static int _listen(int sockfd, int backlog){return listen(sockfd, backlog);}
int TCPSocket::listen(TCPSocket *s)
{
  if(!s) {
    strerr = "TCPSocket is a NULL pointer.";
    return 1;
  }

  if(s->connected) {
    strerr = "TCPSocket already connected.";
    return 1;
  }

  if(!connected) {
    struct sockaddr_in socketaddr;
    memset((char *) &socketaddr, sizeof(socketaddr), 0);
    socketaddr.sin_family = AF_INET;
    socketaddr.sin_port = htons(prt);
    socketaddr.sin_addr.s_addr = htonl(INADDR_ANY);

    if(bind(sock, (struct sockaddr*)&socketaddr, sizeof(socketaddr)) == -1) {
      strerr = "Socket: bind() failed! ";
      strerr.append(strerror(errno));
      return 1;
    }

    if(_listen(sock, 5) == -1) {
      strerr = "Socket: listen() failed! ";
      strerr.append(strerror(errno));
      return 1;
    }

    connected = true;
  }

  // accept new connection and get its connection descriptor
  struct sockaddr_in ssocketaddr;
  int csalen = sizeof(ssocketaddr);

  s->sock = accept(sock, (struct sockaddr*)&ssocketaddr, (socklen_t*)&csalen);

  if (s->sock < 0) {
    s->connected = false;
    strerr = "Socket: accept() failed! ";
    strerr.append(strerror(errno));
    return 1;
  }

  // Fill in the host data.
  s->setAddress(inet_ntoa(ssocketaddr.sin_addr));
  s->setPort(ssocketaddr.sin_port);

  s->connected = true;
  return 0;
}