102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*****************************************************************************
|
|
*
|
|
* File ..................: mbuseradd/salt.c
|
|
* Purpose ...............: MBSE BBS Shadow Password Suite
|
|
* Last modification date : 13-May-2001
|
|
* Original Source .......: Shadow Password Suite
|
|
* Original Copyrioght ...: Julianne Frances Haugh and others.
|
|
*
|
|
*****************************************************************************
|
|
* Copyright (C) 1997-2001
|
|
*
|
|
* Michiel Broek FIDO: 2:280/2802
|
|
* Beekmansbos 10
|
|
* 1971 BV IJmuiden
|
|
* the Netherlands
|
|
*
|
|
* This file is part of MBSE BBS.
|
|
*
|
|
* This BBS is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* MBSE BBS is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with MBSE BBS; see the file COPYING. If not, write to the Free
|
|
* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* salt.c - generate a random salt string for crypt()
|
|
*
|
|
* Written by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>,
|
|
* public domain.
|
|
*/
|
|
#include "../config.h"
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#ifdef TIME_WITH_SYS_TIME
|
|
#include <time.h>
|
|
#endif
|
|
#include <sys/time.h>
|
|
#include "rad64.h"
|
|
|
|
|
|
#if 1
|
|
#include "getdef.h"
|
|
|
|
|
|
/*
|
|
* Generate 8 base64 ASCII characters of random salt. If MD5_CRYPT_ENAB
|
|
* in /etc/login.defs is "yes", the salt string will be prefixed by "$1$"
|
|
* (magic) and pw_encrypt() will execute the MD5-based FreeBSD-compatible
|
|
* version of crypt() instead of the standard one.
|
|
*/
|
|
char *crypt_make_salt(void)
|
|
{
|
|
struct timeval tv;
|
|
static char result[40];
|
|
|
|
result[0] = '\0';
|
|
if (getdef_bool("MD5_CRYPT_ENAB")) {
|
|
strcpy(result, "$1$"); /* magic for the new MD5 crypt() */
|
|
}
|
|
|
|
/*
|
|
* Generate 8 chars of salt, the old crypt() will use only first 2.
|
|
*/
|
|
gettimeofday(&tv, (struct timezone *) 0);
|
|
strcat(result, l64a(tv.tv_usec));
|
|
strcat(result, l64a(tv.tv_sec + getpid() + clock()));
|
|
|
|
if (strlen(result) > 3 + 8) /* magic+salt */
|
|
result[11] = '\0';
|
|
|
|
return result;
|
|
}
|
|
#else
|
|
|
|
/*
|
|
* This is the old style random salt generator...
|
|
*/
|
|
char *crypt_make_salt(void)
|
|
{
|
|
time_t now;
|
|
static unsigned long x;
|
|
static char result[3];
|
|
|
|
time(&now);
|
|
x += now + getpid() + clock();
|
|
result[0] = i64c(((x >> 18) ^ (x >> 6)) & 077);
|
|
result[1] = i64c(((x >> 12) ^ x) & 077);
|
|
result[2] = '\0';
|
|
return result;
|
|
}
|
|
#endif
|