/*--------------------------------------------------------*//* Copyright (c) PSW-soft 1996-98 by P. Semjanov          *//*                                                        *//* Prototype for PCL 2.0 using                            *//*                                                        *//*--------------------------------------------------------*/#include <stdio.h>#include <string.h>#include <stdlib.h>#include "pcl.h"int NO_USER_BRUTE = TRUE; // if no user's brute force function used,                          // else FALSE/* main variables. Interface with user's modulechar psw_chars[256];          // current password. Ending '\0' is NOT GUARANTIED!int psw_len;                  // current password lengthUPASS passwords;      // passwords tested. Must be incremented in user's module*/main (argc, argv)int argc;char *argv[];{/* benchmark() does benchmarks */  if (argc > 1) if (argv[1][0] == 'b') { benchmark(); exit(1); }   passwords = 0;/* parse_rules_file() is the main function. Is called fromuser's module after command lineprocessing, all global operation doing etc. Arguments:  rules_file       - password definition filename,  min_psw_len, max_psw_len - min & max password lengths*/   parse_rules_file ("password.def", 1, 5);   printf ("\n" UPASS_FMT " passwords tested\n", passwords);}/* test(). Callback test password function.   Must increase "passwords" variable.   Returns:     0  - password is correct. In this case          test() may exit(0) if no more password needed;     any > 0 - password is not correct;     -1 - password is not correct and no one (longer)          password can begin with such chars*/int test (void){  psw_chars[psw_len] = '\0';  /* before printing */  if (psw_len)  printf ("%s\n", psw_chars);  else puts ("NULL_PASSWORD");#ifdef __GNUC__#define MOD(a,b)  ((a) % (b))#else#define MOD(a,b)  ((a) - ((UPASS) (unsigned long)((a) / (UPASS)(b)) ) * (UPASS)(b))#endif  passwords++;/* print_password() prints current password or/and statistics   Arguments:      mode = STOP - means stop the timer and print statistics      mode = GET  - don't stop the timer and print current password                    and statistics      right_password = TRUE, if password found                     = FALSE otherwise */  if (MOD (passwords, 1000000L) == 0) print_password (GET, FALSE);  if (strcmp (psw_chars, "yako")==0) print_password (STOP, TRUE);  else return (1);}/* init_brute_force(). Callback function.  Any global operation before password testing should be done here. Called when new line of password definition file is processing */void init_brute_force(){}/* get_special(). Callback function.    Gets user defined special charset or words.   Called if $s encountered.   Arguments:       s  - already existing char[256] buffer. Copy return value to this;       n  - the number of special charset (number after $s).   Returns:       buf or       NULL if no more words.*/char *get_special (s, n)char *s;int16 n;{// let $s(1) may be "aa" or "bb"char *special[] = { "aa", "bb"}; static int i = 0;   if (n == 1) {      if (i < 2) return (strcpy (s, special[i++]));      else { i = 0; return (NULL); }     }   else yyerror ("Invalid special charset");}/* brute_force(). Callback function. Does user's brute force attack  (maybe more effective) instead of standard (when '*' encountered    in password definition file).   Called only if NO_USER_BRUTE is FALSE.   Arguments:       len - current length of psw_chars;       charset - charset to add to the end of psw_chars;   Here:       psw_len - desired length of password.*/void brute_force (int len, char *charset) {// must fill only if NO_USER_BRUTE == FALSE}/* definition_done(). Callback function. Is called when definitionpart of password definintion file was parsed successfully */void definition_done(){/* test_definition() prints defined charsets and tests   defined convert strings */ test_definition();}