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121 lines
2.7 KiB
121 lines
2.7 KiB
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <unistd.h> /* pour read(2)/write(2) */
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#include <netdb.h>
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#include <string.h> /* pour memset */
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#include <ctype.h> /* pour toupper */
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#include <arpa/inet.h> /* pour inet_ntop */
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#define REQUEST_MAX 1024 /* taille MAX en réception */
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void usage() {
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fprintf(stderr,"usage : serveur port\n");
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exit(1);
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}
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int main(int argc, char **argv) {
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int s, sock, ret;
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struct addrinfo hints, *result;
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struct sockaddr_storage src_addr;
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socklen_t len_src_addr;
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char request[REQUEST_MAX];
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/* Vérification des arguments */
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if(argc!=2) {
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fprintf(stderr,"Erreur : Nb args !\n");
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usage();
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}
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memset(&hints, 0, sizeof(struct addrinfo));
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hints.ai_flags = AI_PASSIVE; /* Equiv INADDR_ANY */
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hints.ai_family = AF_INET6; /* Allow IPv4 or IPv6 */
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hints.ai_socktype = SOCK_STREAM; /* Flux => TCP */
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hints.ai_protocol = 0; /* Any protocol */
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hints.ai_canonname = NULL;
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hints.ai_addr = NULL;
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hints.ai_next = NULL;
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ret = getaddrinfo(NULL, argv[1], &hints, &result);
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if (ret != 0) {
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fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(ret));
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exit(EXIT_FAILURE);
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}
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/* Création de la socket IPv4/IPv6 */
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if((s=socket(result->ai_family, result->ai_socktype,
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result->ai_protocol))==-1) {
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perror("socket"); exit(1);
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}
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/* Attachement de la socket */
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if (bind(s, result->ai_addr, result->ai_addrlen) == -1) {
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perror("bind"); exit(1);
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}
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freeaddrinfo(result);
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/* définition de la taille de la file d'attente */
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if(listen(s, 5)) {
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perror("listen"); exit(1);
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}
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while(1) { /* boucle du serveur */
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/* Attente d'une connexion */
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puts("En attente de connexion...");
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len_src_addr=sizeof src_addr;
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if((sock=accept(s, (struct sockaddr *)&src_addr,
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&len_src_addr))==-1) {
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perror("accept"); exit(1);
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}
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puts("Connexion acceptée !");
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/* boucle de traitement du client */
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while((ret=recv(sock, request, REQUEST_MAX,0))>0) {
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request[ret]=0;
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/* traitement de la requête(passage en majuscule) */
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{
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int i=0;
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while(request[i]) {
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request[i]=toupper(request[i]);
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++i;
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}
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}
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/* Émission de la réponse */
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if(send(sock, request, strlen(request)+1,0) !=
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strlen(request)+1) {
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perror("send"); exit(1);
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}
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} /* fin de la boucle de traitement du client */
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if(close(sock)==-1) {
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perror("close"); exit(1);
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}
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fprintf(stderr, "Fin de connexion !\n");
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if(ret==-1) {
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perror("recv");
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}
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} /* fin boucle principale du serveur */
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return 0;
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} |