#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <math.h>
#include <string.h>

#include <Xm/Xm.h>
#include <Xm/XmAll.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/signal.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include <pwd.h>
 
/* CONSTANTES */
#define READ 0
#define WRITE 1

/* PARAMETRES */
#define GROUP	"239.255.194.160"
#define PORT	52611
#define TTL	15;
#define MAX_USER 256

/* VARIABLES GLOBALES */
char *dest;
char *sess_name;
char *media;
unsigned char ttl;
unsigned short port;
int debug =0;

char myid[256];
char user_id[MAX_USER][256];
int users_list_used[MAX_USER];
char history_message[10000];

/* widgets list utilises pour affichage*/
Widget users_list, message_list;

/* cible de la destination */
char DEST[MAX_USER];

/* resources pour le fenetre */
static String   fallbackResources[] = {
  "*title: Mchat Version 2.0b",
  NULL};

/* variables au niveau reseau */
int sdr, sdw;
struct sockaddr_in sock_r,sock_w;
int len_r,len_w;
struct ip_mreq imr;
char loop = 1;  /* pour avoir echo direct ou non */
char nickname[L_cuserid];
char echo = 1;  

/* DECLARATION DES FONCTIONS */
int gethostname(char *, int);
int init_socket(struct sockaddr_in * ,int ,char *,int);
int init_reseaux(void);
void sock_write(char*,int);
void sock_read(Widget ,XtPointer ,XtPointer);
void quit(Widget ,XtPointer ,XtPointer);
void echo_switch(Widget ,XtPointer ,XtPointer);
void send_callback(Widget ,XtPointer ,XtPointer);
void refresh_callback(Widget ,XtPointer ,XtPointer);
void help_callback(Widget ,XtPointer ,XtPointer);
void quit_res(void);
void traiter_message(char *,int); 
void init_declarations(void);
void test_nom_connu(char *);  
void enlever_user(char *);
void rajouter_user(char *);
void rajouter_message(char *,int);