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ecaae2f8cd
Accessing this variable directly is a recipe for disaster, because binaries and libraries can have different versions in them due to how libshadow_la linking is performed. Make sure that at least NULL check is always performed by calling the proper getter function. Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
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* SPDX-FileCopyrightText: 1990 - 1993, Julianne Frances Haugh
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* SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
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* SPDX-FileCopyrightText: 2005 , Tomasz Kłoczko
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* SPDX-FileCopyrightText: 2007 - 2010, Nicolas François
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*
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* SPDX-License-Identifier: BSD-3-Clause
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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.h"
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#include "string/strcmp/strprefix.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) && strprefix(salt, "$") && (strlen (cp) <= 13))
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{
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/*@observer@*/const char *method;
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switch (salt[1])
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{
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case '1':
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method = "MD5";
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break;
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case '2':
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method = "BCRYPT";
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break;
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case '5':
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method = "SHA256";
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break;
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case '6':
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method = "SHA512";
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break;
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case 'y':
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method = "YESCRYPT";
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break;
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default:
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{
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static char nummethod[4] = "$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 (log_get_logfd(),
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_("crypt method not supported by libcrypt? (%s)\n"),
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method);
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errno = EINVAL;
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return NULL;
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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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