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/*
** Copyright (c) 1999, 2000, 2001, 2002, 2003
** Adel I. Mirzazhanov. All rights reserved
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1.Redistributions of source code must retain the above copyright notice,
** this list of conditions and the following disclaimer.
** 2.Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3.The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
** OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
** GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
** randpass.c - Random password generation module of PWGEN program
*/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#if !defined(WIN32) && !defined(_WIN32) && !defined(__WIN32) && !defined(__WIN32__)
#include <pwd.h>
#endif
#include <unistd.h>
#include "randpass.h"
#include "owntypes.h"
#include "smbl.h"
/*
** gen_rand_pass - generates random password of specified type
** INPUT:
** char * - password string.
** int - minimum password length.
** int - maximum password length.
** unsigned int - password generation mode.
** OUTPUT:
** int - password length or -1 on error.
** NOTES:
** none.
*/
int
gen_rand_pass (char *password_string, int minl, int maxl, unsigned int pass_mode)
{
int i = 0;
int j = 0;
int length = 0;
char *str_pointer;
int random_weight[94];
int max_weight = 0;
int max_weight_element_number = 0;
if (minl > APG_MAX_PASSWORD_LENGTH || maxl > APG_MAX_PASSWORD_LENGTH ||
minl < 1 || maxl < 1 || minl > maxl)
return (-1);
for (i = 0; i <= 93; i++) random_weight[i] = 0;
length = minl + randint(maxl-minl+1);
str_pointer = password_string;
for (i = 0; i < length; i++)
{
/* Asign random weight in weight array if mode is present*/
for (j = 0; j <= 93 ; j++)
if ( ( (pass_mode & smbl[j].type) > 0) &&
!( (S_RS & smbl[j].type) > 0))
random_weight[j] = 1 + randint(20000);
j = 0;
/* Find an element with maximum weight */
for (j = 0; j <= 93; j++)
if (random_weight[j] > max_weight)
{
max_weight = random_weight[j];
max_weight_element_number = j;
}
/* Get password symbol */
*str_pointer = smbl[max_weight_element_number].ch;
str_pointer++;
max_weight = 0;
max_weight_element_number = 0;
for (j = 0; j <= 93; j++) random_weight[j] = 0;
}
*str_pointer = 0;
return (length);
}
/*
** gen_rand_symbol - generates random password of specified type
** INPUT:
** char * - symbol.
** unsigned int - symbol type.
** OUTPUT:
** int - password length or -1 on error.
** NOTES:
** none.
*/
int
gen_rand_symbol (char *symbol, unsigned int mode)
{
int j = 0;
char *str_pointer;
int random_weight[94];
int max_weight = 0;
int max_weight_element_number = 0;
for (j = 0; j <= 93; j++) random_weight[j] = 0;
str_pointer = symbol;
j = 0;
/* Asign random weight in weight array if mode is present*/
for (j = 0; j <= 93 ; j++)
if ( ( (mode & smbl[j].type) > 0) &&
!( (S_RS & smbl[j].type) > 0))
random_weight[j] = 1 + randint(20000);
j = 0;
/* Find an element with maximum weight */
for (j = 0; j <= 93; j++)
if (random_weight[j] > max_weight)
{
max_weight = random_weight[j];
max_weight_element_number = j;
}
/* Get password symbol */
*str_pointer = smbl[max_weight_element_number].ch;
max_weight = 0;
max_weight_element_number = 0;
return (0);
}
/*
** is_restricted_symbol - detcts if symbol is restricted rigt now
** INPUT:
** char - symbol.
** OUTPUT:
** int - 0 - not restricted
** 1 - restricted
** NOTES:
** none.
*/
int
is_restricted_symbol (char symbol)
{
int j = 0;
for (j = 0; j <= 93 ; j++)
if (symbol == smbl[j].ch)
if ((S_RS & smbl[j].type) > 0)
return(1);
return(0);
}
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