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/*
* $Id: mnc_main.c,v 1.12 2004/09/22 19:14:23 colmmacc Exp $
*
* mnc_main.c -- Multicast NetCat
*
* Colm MacCarthaigh, <colm@apache.org>
*
* Copyright (c) 2007, Colm MacCarthaigh.
* Copyright (c) 2004 - 2006, HEAnet Ltd.
*
* This software is an open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HEAnet Ltd. nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef WINDOWS
/* Non-windows includes */
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdio.h>
#else
/* Windows-specific includes */
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
#endif /* WINDOWS */
#include "mnc.h"
int main(int argc, char **argv)
{
/* Utility variables */
int sock,
len;
char buffer[1024];
/* Our main configuration */
struct mnc_configuration * config;
#ifdef WINDOWS
WSADATA wsaData;
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0)
{
mnc_error("This operating system is not supported\n");
}
#endif
/* Parse the command line */
config = parse_arguments(argc, argv);
/* Create a socket */
if ((sock = socket(config->group->ai_family, config->group->ai_socktype,
config->group->ai_protocol)) < 0)
{
mnc_error("Could not create socket\n");
}
/* Are we supposed to listen? */
if (config->mode == LISTENER)
{
/* Set up the socket for listening */
if (multicast_setup_listen(sock, config->group, config->source,
config->iface) < 0)
{
mnc_error("Can not listen for multicast packets.\n");
}
/* Recieve the packets */
while ((len = recvfrom(sock, buffer, sizeof(buffer),
0, NULL, NULL)) >= 0)
{
write(STDOUT_FILENO, buffer, len);
}
}
else /* Assume MODE == SENDER */
{
/* Set up the socket for sending */
if (multicast_setup_send(sock, config->group, config->source)
< 0)
{
mnc_error("Can not send multicast packets\n");
}
/* Send the packets */
while((len = read(STDIN_FILENO, buffer, sizeof(buffer))) > 0)
{
sendto(sock, buffer, len, 0, config->group->ai_addr,
config->group->ai_addrlen);
}
}
/* Close the socket */
close(sock);
return 0;
}
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