/*

  *  Copyright (C) 2007-2009 Sourcefire, Inc.
  *
  *  Authors: Tomasz Kojm, Török Edvin

  *
  *  This program is free software; you can redistribute it and/or modify

  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.

  *
  *  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.

  */
 

 #if HAVE_CONFIG_H
 #include "clamav-config.h"
 #endif
 

 #include <stdio.h>
 #include <string.h>
 #include <sys/types.h>

 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif

 #ifndef	_WIN32

 #include <sys/socket.h>
 #include <netinet/in.h>

 #include <arpa/inet.h>

 #include <netdb.h>

 #endif

 #include <errno.h>

 #include "libclamav/clamav.h"
 

 #include "shared/optparser.h"

 #include "shared/output.h"

 #include "shared/misc.h"

 #include "others.h"
 #include "server.h"

 #include "tcpserver.h"

 int tcpserver(const struct optstruct *opts)

 {

     struct sockaddr_in server;
     int sockfd, backlog;

     char *estr;

     int true = 1;

     if (cfg_tcpsock(opts, &server, INADDR_ANY) == -1) {
 	return -1;
     }

 
     if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
 	estr = strerror(errno);

 	logg("!TCP: socket() error: %s\n", estr);

 	return -1;

     }
 

     if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (void *) &true, sizeof(true)) == -1) {

 	logg("!TCP: setsocktopt(SO_REUSEADDR) error: %s\n", strerror(errno));

     }
 

     if(bind(sockfd, (struct sockaddr *) &server, sizeof(struct sockaddr_in)) == -1) {
 	estr = strerror(errno);

 	logg("!TCP: bind() error: %s\n", estr);

 	closesocket(sockfd);

 	return -1;

     } else {

 	const struct optstruct *taddr = optget(opts, "TCPAddr");

 	if(taddr->enabled)

 	    logg("#TCP: Bound to address %s on port %u\n", taddr->strarg, (unsigned int) optget(opts, "TCPSocket")->numarg);

 	else

 	    logg("#TCP: Bound to port %u\n", (unsigned int) optget(opts, "TCPSocket")->numarg);

     }

     backlog = optget(opts, "MaxConnectionQueueLength")->numarg;

     logg("#TCP: Setting connection queue length to %d\n", backlog);

 
     if(listen(sockfd, backlog) == -1) {
 	estr = strerror(errno);

 	logg("!TCP: listen() error: %s\n", estr);

 	closesocket(sockfd);

 	return -1;

     }
 

     return sockfd;

 }