ee5c48d51c
password longer than 13 chars. This protects against the GNU crypt() which does not return NULL if the algorithm is not supported, and return a DES encrypted password.
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* Copyright 1990 - 1993, Julianne Frances Haugh
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* 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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* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH 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 JULIE HAUGH 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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#include <config.h>
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#ident "$Id$"
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#include <unistd.h>
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#include "prototypes.h"
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#include "defines.h"
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char *pw_encrypt (const char *clear, const char *salt)
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{
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static char cipher[128];
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char *cp;
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cp = crypt (clear, salt);
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if (!cp) {
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/*
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* Single Unix Spec: crypt() may return a null pointer,
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* and set errno to indicate an error. The caller doesn't
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* expect us to return NULL, so...
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*/
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perror ("crypt");
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exit (1);
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}
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/* The GNU crypt does not return NULL if the algorithm is not
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* supported, and return a DES encrypted password. */
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if (salt && salt[0] == '$' && strlen (cp) <= 13)
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{
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char *method = "$1$";
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switch (salt[1])
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{
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case '1':
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method = "MD5";
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break;
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case '5':
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method = "SHA256";
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break;
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case '6':
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method = "SHA512";
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break;
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default:
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method[1] = salt[1];
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}
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fprintf (stderr,
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_("crypt method not supported by libcrypt? (%s)\n"),
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method);
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exit (1);
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}
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if (strlen (cp) != 13)
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return cp; /* nonstandard crypt() in libc, better bail out */
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strcpy (cipher, cp);
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return cipher;
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}
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