S.O.S

/* Copyright (c) 2003, Rene Luria aka herel * 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 #include #include #include #include #include #include #define POUET EXIT_SUCCESS #define DTC EXIT_FAILURE #ifdef WWW #define MESSAGE "Content-type: text/html\n\n\n\t\nS.O.S

S.O.S

\n" #define PORT_DEFAULT 80 #else #define MESSAGE "S.O.S\n" #define PORT_DEFAULT 8888 #endif /*** * setup_server * · 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; }