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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
commit333f7ecfa3e040191c66b2b92f6c117ca2cbac1d (patch)
tree178a8f140927896970f47930dae9213161268f10 /lib/encrypt.c
parentInitial commit. (diff)
downloadshadow-333f7ecfa3e040191c66b2b92f6c117ca2cbac1d.tar.xz
shadow-333f7ecfa3e040191c66b2b92f6c117ca2cbac1d.zip
Adding upstream version 1:4.8.1.upstream/1%4.8.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/encrypt.c')
-rw-r--r--lib/encrypt.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/lib/encrypt.c b/lib/encrypt.c
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--- /dev/null
+++ b/lib/encrypt.c
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+/*
+ * Copyright (c) 1990 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2005 , Tomasz Kłoczko
+ * Copyright (c) 2007 - 2010, Nicolas François
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ * endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <unistd.h>
+#include <stdio.h>
+
+#include "prototypes.h"
+#include "defines.h"
+
+/*@exposed@*//*@null@*/char *pw_encrypt (const char *clear, const char *salt)
+{
+ static char cipher[128];
+ char *cp;
+
+ cp = crypt (clear, salt);
+ if (NULL == cp) {
+ /*
+ * Single Unix Spec: crypt() may return a null pointer,
+ * and set errno to indicate an error. In this case return
+ * the NULL so the caller can handle appropriately.
+ */
+ return NULL;
+ }
+
+ /* Some crypt() do not return NULL if the algorithm is not
+ * supported, and return a DES encrypted password. */
+ if ((NULL != salt) && (salt[0] == '$') && (strlen (cp) <= 13))
+ {
+ /*@observer@*/const char *method;
+ switch (salt[1])
+ {
+ case '1':
+ method = "MD5";
+ break;
+ case '2':
+ method = "BCRYPT";
+ break;
+ case '5':
+ method = "SHA256";
+ break;
+ case '6':
+ method = "SHA512";
+ break;
+ default:
+ {
+ static char nummethod[4] = "$x$";
+ nummethod[1] = salt[1];
+ method = &nummethod[0];
+ }
+ }
+ (void) fprintf (stderr,
+ _("crypt method not supported by libcrypt? (%s)\n"),
+ method);
+ exit (EXIT_FAILURE);
+ }
+
+ if (strlen (cp) != 13) {
+ return cp; /* nonstandard crypt() in libc, better bail out */
+ }
+
+ strcpy (cipher, cp);
+
+ return cipher;
+}
+