/* Copyright (c) 2003, Rene Luria aka herel <rene@luria.ch>
* All rights reserved.
*
* 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 author 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 COPYRIGHT OWNER 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. */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <unistd.h>
#define POUET EXIT_SUCCESS
#define DTC EXIT_FAILURE
#ifdef WWW
#define MESSAGE "Content-type: text/html\n\n<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n\t<!DOCTYPE html\nPUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en-US\"><head><title>S.O.S</title></head><body><p>S.O.S</p></body></html>\n"
#define PORT_DEFAULT 80
#else
#define MESSAGE "S.O.S\n"
#define PORT_DEFAULT 8888
#endif
/***
* setup_server
* ˇ retourne une socket serveur toute nikel
* args: numéro de port
* ret: numéro de la socket ou -1$
***/
int setup_server (short int port)
{
int serverfd;
if ((serverfd = socket (AF_INET, SOCK_STREAM, 0)) < 0)
{
perror ("socket");
return -1;
}
{
int yes = 1;
if (setsockopt (serverfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes) < 0)
{
perror ("setsockopt");
return -1;
}
}
{
struct sockaddr_in serveur;
memset (&serveur, 0, sizeof serveur);
serveur.sin_family = PF_INET;
serveur.sin_port = htons (port);
serveur.sin_addr.s_addr = INADDR_ANY;
if (bind (serverfd, (struct sockaddr *) &serveur, sizeof serveur) < 0)
{
perror ("bind");
return -1;
}
}
if (listen (serverfd, 0) < 0)
{
perror ("listen");
return -1;
}
return serverfd;
}
int main (int argc, char **argv)
{
int serverfd;
short port;
switch (argc)
{
case 1:
port = PORT_DEFAULT;
break;
case 2:
port = atoi (argv[1]);
break;
default:
fprintf (stderr, "usage: ./sos [port]\n");
return DTC;
break;
}
if ((serverfd = setup_server (port)) < 0)
{
return DTC;
}
while (1)
{
int client;
struct sockaddr_in addresse;
size_t taille = sizeof addresse;
memset (&addresse, 0, taille);
if ((client = accept (serverfd, (struct sockaddr *) &addresse, &taille)) >= 0)
{
printf ("CLIENT en perdition!\n");
send (client, MESSAGE, strlen (MESSAGE) + 1, 0);
close (client);
}
else
{
perror ("accept");
}
}
return POUET;
}