103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/*
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* Copyright (c) 1990 - 1993, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2005 , Tomasz Kłoczko
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* Copyright (c) 2007 - 2010, Nicolas François
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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. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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 <stdio.h>
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#include "prototypes.h"
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#include "defines.h"
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#include "shadowlog_internal.h"
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/*@exposed@*//*@null@*/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 (NULL == 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. In this case return
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* the NULL so the caller can handle appropriately.
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*/
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return NULL;
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}
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/* Some crypt() do not return NULL if the algorithm is not
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* supported, and return a DES encrypted password. */
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if ((NULL != salt) && (salt[0] == '$') && (strlen (cp) <= 13))
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{
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/*@observer@*/const char *method;
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switch (salt[1])
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{
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case '1':
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method = "MD5";
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break;
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case '2':
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method = "BCRYPT";
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break;
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case '5':
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method = "SHA256";
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break;
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case '6':
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method = "SHA512";
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break;
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case 'y':
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method = "YESCRYPT";
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break;
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default:
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{
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static char nummethod[4] = "$x$";
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nummethod[1] = salt[1];
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method = &nummethod[0];
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}
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}
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(void) fprintf (shadow_logfd,
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_("crypt method not supported by libcrypt? (%s)\n"),
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method);
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exit (EXIT_FAILURE);
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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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}
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strcpy (cipher, cp);
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return cipher;
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}
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