crypto/heimdal-0.6.3/lib/kadm5/keys.c

   1 /*
   2  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kadm5_locl.h"
  35
  36 RCSID("$Id: keys.c,v 1.1 2000/07/22 05:53:02 assar Exp $");
  37
  38 /*
  39  * free all the memory used by (len, keys)
  40  */
  41
  42 void
  43 _kadm5_free_keys (kadm5_server_context *context,
  44                   int len, Key *keys)
  45 {
  46     int i;
  47
  48     for (i = 0; i < len; ++i) {
  49         free (keys[i].mkvno);
  50         keys[i].mkvno = NULL;
  51         if (keys[i].salt != NULL) {
  52             free_Salt(keys[i].salt);
  53             free(keys[i].salt);
  54             keys[i].salt = NULL;
  55         }
  56         krb5_free_keyblock_contents(context->context, &keys[i].key);
  57     }
  58     free (keys);
  59 }
  60
  61 /*
  62  * null-ify `len', `keys'
  63  */
  64
  65 void
  66 _kadm5_init_keys (Key *keys, int len)
  67 {
  68     int i;
  69
  70     for (i = 0; i < len; ++i) {
  71         keys[i].mkvno               = NULL;
  72         keys[i].salt                = NULL;
  73         keys[i].key.keyvalue.length = 0;
  74         keys[i].key.keyvalue.data   = NULL;
  75     }
  76 }
  77
  78 /*
  79  * return 0 iff `keys1, len1' and `keys2, len2' are identical
  80  */
  81
  82 int
  83 _kadm5_cmp_keys(Key *keys1, int len1, Key *keys2, int len2)
  84 {
  85     int i;
  86
  87     if (len1 != len2)
  88         return 1;
  89
  90     for (i = 0; i < len1; ++i) {
  91         if ((keys1[i].salt != NULL && keys2[i].salt == NULL)
  92             || (keys1[i].salt == NULL && keys2[i].salt != NULL))
  93             return 1;
  94         if (keys1[i].salt != NULL) {
  95             if (keys1[i].salt->type != keys2[i].salt->type)
  96                 return 1;
  97             if (keys1[i].salt->salt.length != keys2[i].salt->salt.length)
  98                 return 1;
  99             if (memcmp (keys1[i].salt->salt.data, keys2[i].salt->salt.data,
 100                         keys1[i].salt->salt.length) != 0)
 101                 return 1;
 102         }
 103         if (keys1[i].key.keytype != keys2[i].key.keytype)
 104             return 1;
 105         if (keys1[i].key.keyvalue.length != keys2[i].key.keyvalue.length)
 106             return 1;
 107         if (memcmp (keys1[i].key.keyvalue.data, keys2[i].key.keyvalue.data,
 108                     keys1[i].key.keyvalue.length) != 0)
 109             return 1;
 110     }
 111     return 0;
 112 }