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/*
* Copyright (c) 1999 Kungliga Tekniska Högskolan
* (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: sample_passwd_check.c,v 1.1 1999/09/10 10:11:03 assar Exp $ */
#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
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