nkeynes@998: /**
nkeynes@1021:  * $Id$
nkeynes@998:  * 
nkeynes@998:  * Network support functions
nkeynes@998:  *
nkeynes@998:  * Copyright (c) 2009 Nathan Keynes.
nkeynes@998:  *
nkeynes@998:  * This program is free software; you can redistribute it and/or modify
nkeynes@998:  * it under the terms of the GNU General Public License as published by
nkeynes@998:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@998:  * (at your option) any later version.
nkeynes@998:  *
nkeynes@998:  * This program is distributed in the hope that it will be useful,
nkeynes@998:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@998:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@998:  * GNU General Public License for more details.
nkeynes@998:  */
nkeynes@998: 
nkeynes@998: #include <string.h>
nkeynes@998: #include <unistd.h>
nkeynes@998: #include <sys/socket.h>
nkeynes@998: #include <netinet/in.h>
nkeynes@998: #include <arpa/inet.h>
nkeynes@998: #include <errno.h>
nkeynes@1077: #include "ioutil.h"
nkeynes@998: 
nkeynes@1077: int io_create_server_socket(const char *interface, int port )
nkeynes@998: {
nkeynes@998:     struct sockaddr_in sin;
nkeynes@998:     int fd = socket(AF_INET, SOCK_STREAM, 0);
nkeynes@998:     if( fd == -1 ) {
nkeynes@998:         ERROR( "Failed to create TCP socket!" );
nkeynes@998:         return -1;
nkeynes@998:     }
nkeynes@998:     
nkeynes@998:     sin.sin_family = AF_INET;
nkeynes@998:     sin.sin_addr.s_addr = 0;
nkeynes@998:     sin.sin_port = htons(port);
nkeynes@998:     
nkeynes@998:     if( interface != NULL ) {
nkeynes@998:         if( !inet_aton(interface, &sin.sin_addr) ) {
nkeynes@998:             /* TODO: hostname lookup */
nkeynes@998:         }
nkeynes@998:     }
nkeynes@998: 
nkeynes@998:     if( bind( fd, (struct sockaddr *)&sin, sizeof(sin) ) != 0 ||
nkeynes@998:             listen(fd, 5) != 0 ) {
nkeynes@998:         close(fd);
nkeynes@998:         ERROR( "Failed to bind port %d (%s)", port, strerror(errno) );
nkeynes@998:         return -1;
nkeynes@998:     }
nkeynes@998:     return fd;
nkeynes@998: }
nkeynes@998: