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