sample password quality checker moved here from ../../kpasswd

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@6909 ec53bebd-3082-4978-b11e-865c3cabbd6b
1999-09-10 10:11:03 +00:00
parent e057a8d0fe
commit f776ee158e
1 changed files with 85 additions and 0 deletions
--- a/lib/kadm5/sample_passwd_check.c
+++ b/lib/kadm5/sample_passwd_check.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 1999 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * 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. Neither the name of KTH nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY KTH AND ITS 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 KTH OR ITS 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. */
+
+/* $Id$ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <krb5.h>
+
+/* specify the api-version this library conforms to */
+
+int version = 0;
+
+/* just check the length of the password, this is what the default
+   check does, but this lets you specify the minimum length in
+   krb5.conf */
+const char*
+check_length(krb5_context context,
+             krb5_principal prinipal,
+             krb5_data *password)
+{
+    int min_length = krb5_config_get_int_default(context, NULL, 6,
+						 "password_quality",
+						 "min_length",
+						 NULL);
+    if(password->length < min_length)
+	return "Password too short";
+    return NULL;
+}
+
+#ifdef DICTPATH
+
+/* use cracklib to check password quality; this requires a patch for
+   cracklib that can be found at
+   ftp://ftp.pdc.kth.se/pub/krb/src/cracklib.patch */
+
+const char*
+check_cracklib(krb5_context context,
+	       krb5_principal principal,
+	       krb5_data *password)
+{
+    char *s = malloc(password->length + 1);
+    char *msg;
+    char *strings[2];
+    if(s == NULL)
+	return NULL; /* XXX */
+    strings[0] = principal->name.name_string.val[0]; /* XXX */
+    strings[1] = NULL;
+    memcpy(s, password->data, password->length);
+    s[password->length] = '\0';
+    msg = FascistCheck(s, DICTPATH, strings);
+    memset(s, 0, password->length);
+    free(s);
+    return msg;
+}
+#endif