86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/*
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* Copyright (c) 1999 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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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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*
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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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*
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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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*
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* 3. Neither the name of KTH nor the names of its contributors may be
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* used to 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 KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* $Id: sample_passwd_check.c,v 1.1 1999/09/10 10:11:03 assar Exp $ */
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#include <string.h>
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#include <stdlib.h>
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#include <krb5.h>
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/* specify the api-version this library conforms to */
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int version = 0;
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/* just check the length of the password, this is what the default
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check does, but this lets you specify the minimum length in
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krb5.conf */
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const char*
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check_length(krb5_context context,
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krb5_principal prinipal,
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krb5_data *password)
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{
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int min_length = krb5_config_get_int_default(context, NULL, 6,
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"password_quality",
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"min_length",
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NULL);
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if(password->length < min_length)
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return "Password too short";
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return NULL;
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}
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#ifdef DICTPATH
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/* use cracklib to check password quality; this requires a patch for
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cracklib that can be found at
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ftp://ftp.pdc.kth.se/pub/krb/src/cracklib.patch */
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const char*
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check_cracklib(krb5_context context,
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krb5_principal principal,
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krb5_data *password)
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{
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char *s = malloc(password->length + 1);
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char *msg;
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char *strings[2];
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if(s == NULL)
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return NULL; /* XXX */
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strings[0] = principal->name.name_string.val[0]; /* XXX */
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strings[1] = NULL;
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memcpy(s, password->data, password->length);
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s[password->length] = '\0';
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msg = FascistCheck(s, DICTPATH, strings);
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memset(s, 0, password->length);
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free(s);
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return msg;
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}
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#endif
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