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#include <stdio.h>
#include <stdlib.h>
#define BLOC 8
typedef struct
{
char type[10];
char arg[50];
char result[BLOC];
unsigned long size;
unsigned long num;
}
command;
/* network simulator */
typedef int SOCKET;
static FILE *G_net;
static int recv (SOCKET fd, void *data, int size, int a)
{
int n = -1;
if (G_net != NULL)
{
n = fread (data, size, 1, G_net);
}
(void) fd;
(void) a;
return n;
}
static int send (SOCKET fd, void const *data, int size, int a)
{
int n = -1;
if (G_net != NULL)
{
n = fwrite (data, size, 1, G_net);
}
(void) fd;
(void) a;
return n;
}
static void recevoir (SOCKET sd, char const *filePath)
{
/* On ouvre le fichier en ecriture */
FILE *fichier = fopen (filePath, "wb");
if (fichier != NULL)
{
command entete = { "", "", "", 0, 0 };;
recv (sd, &entete, sizeof (command), 0);
unsigned long tailleFichier = 0;
/* On reconstruit le fichier */
while (tailleFichier < entete.size)
{
command cmd= { "", "", "", 0, 0 };
int lon = recv (sd, &cmd, sizeof (command), 0);
fwrite (cmd.result, cmd.size, 1, fichier);
tailleFichier = tailleFichier + cmd.size;
printf ("Paquet n°%lu de %d bits\n", cmd.num, lon);
printf ("NB Ecrits : %lu octets\n", cmd.size);
printf ("Avancement : %lu/%lu \n", tailleFichier, entete.size);
printf ("Type : %s \n Arg :%s\n", cmd.type, cmd.arg);
system ("pause()");
}
fclose (fichier);
printf ("Fichier crée avec une taille de %lu octets\n", tailleFichier);
}
}
static unsigned long get_size (char const *fname)
{
unsigned long size = 0;
FILE *fp = fopen (fname, "rb");
if (fp != NULL)
{
fseek (fp, 0, SEEK_END);
size = ftell (fp);
fclose (fp), fp = NULL;
printf ("size = %lu\n", size);
}
return size;
}
static void envoyer (SOCKET sd, char const *fname)
{
unsigned long taille = get_size (fname);
if (taille != 0)
{
FILE *fichier = fopen (fname, "rb");
if (fichier != NULL)
{
int end = 0;
command cmd = { "", "", "", 0, 0 };
unsigned long m = 0;
unsigned long numPaquet = 0;
/* en-tete */
cmd.size = taille;
send (sd, &cmd, sizeof (command), 0);
while (!end)
{
int nb_bloc_lus = fread (&cmd.result, BLOC, 1, fichier);
if (nb_bloc_lus == 0)
{
cmd.size = (taille - m);
end = 1;
}
else
{
cmd.size = BLOC;
}
cmd.num = numPaquet;
printf ("Paquet n°%lu\n", cmd.num);
printf ("NB Lus : %lu octets (%lu)\n", cmd.size, (taille - m));
send (sd, &cmd, sizeof (command), 0);
m = m + cmd.size;
printf ("Avancement : %lu/%lu \n", m, taille);
numPaquet++;
}
fclose (fichier), fichier = NULL;
}
else
{
perror(fname);
}
}
}
int main (void)
{
if (G_net == NULL)
{
G_net = fopen ("net.bin", "wb");
if (G_net != NULL)
{
printf("envoyer()\n");
envoyer (0, "out.txt");
#if 1
G_net = freopen ("net.bin", "rb", G_net);
}
if (G_net != NULL)
{
printf("recevoir()\n");
recevoir (0, "in.txt");
}
if (G_net != NULL)
{
#endif
fclose (G_net), G_net = NULL;
}
}
return 0;
} |
