125 lines
2.8 KiB
C
125 lines
2.8 KiB
C
/* $NetBSD: checkpasswd.c,v 1.4 2000/03/30 12:19:47 augustss Exp $ */
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/*-
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* Copyright (c) 1993
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* The Regents of the University of California. 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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* 1. Redistributions of source code must retain the above copyright
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* notice, 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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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)gets.c 8.1 (Berkeley) 6/11/93
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*/
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#ifdef _STANDALONE
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#include <lib/libkern/libkern.h>
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#else
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#include <string.h>
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#endif
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#include "stand.h"
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char *
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getpass(prompt)
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const char *prompt;
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{
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int c;
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char *lp;
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static char buf[128]; /* == _PASSWORD_LEN */
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printf(prompt);
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for (lp = buf;;)
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switch (c = getchar() & 0177) {
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case '\n':
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case '\r':
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*lp = '\0';
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putchar('\n');
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return (buf);
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case '\b':
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case '\177':
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if (lp > buf) {
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lp--;
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putchar('\b');
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putchar(' ');
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putchar('\b');
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}
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break;
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#if HASH_ERASE
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case '#':
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if (lp > buf)
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--lp;
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break;
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#endif
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case 'r'&037: {
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char *p;
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putchar('\n');
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for (p = buf; p < lp; ++p)
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putchar('*');
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break;
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}
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#if AT_ERASE
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case '@':
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#endif
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case 'u'&037:
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case 'w'&037:
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lp = buf;
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putchar('\n');
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break;
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default:
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*lp++ = c;
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putchar('*');
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}
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/*NOTREACHED*/
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}
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#include <sys/md5.h>
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char bootpasswd[16] = {'\0'}; /* into data segment! */
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int
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checkpasswd()
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{
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int i;
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char *passwd;
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MD5_CTX md5ctx;
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char pwdigest[16];
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for (i = 0; i < 16; i++)
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if (bootpasswd[i])
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break;
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if (i == 16)
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return (1); /* no password set */
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for (i = 0; i < 3; i++) {
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passwd = getpass("Password: ");
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MD5Init(&md5ctx);
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MD5Update(&md5ctx, passwd, strlen(passwd));
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MD5Final(pwdigest, &md5ctx);
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if (bcmp(pwdigest, bootpasswd, 16) == 0)
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return (1);
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}
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/* failed */
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return (0);
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}
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