crypto/heimdal-0.6.3/lib/krb5/creds.c

   1 /*
   2  * Copyright (c) 1997 - 2001 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 "krb5_locl.h"
  35
  36 RCSID("$Id: creds.c,v 1.15 2001/05/14 06:14:45 assar Exp $");
  37
  38 krb5_error_code
  39 krb5_free_cred_contents (krb5_context context, krb5_creds *c)
  40 {
  41     return krb5_free_creds_contents (context, c);
  42 }
  43
  44 krb5_error_code
  45 krb5_free_creds_contents (krb5_context context, krb5_creds *c)
  46 {
  47     krb5_free_principal (context, c->client);
  48     c->client = NULL;
  49     krb5_free_principal (context, c->server);
  50     c->server = NULL;
  51     krb5_free_keyblock_contents (context, &c->session);
  52     krb5_data_free (&c->ticket);
  53     krb5_data_free (&c->second_ticket);
  54     free_AuthorizationData (&c->authdata);
  55     krb5_free_addresses (context, &c->addresses);
  56     return 0;
  57 }
  58
  59 krb5_error_code
  60 krb5_copy_creds_contents (krb5_context context,
  61                           const krb5_creds *incred,
  62                           krb5_creds *c)
  63 {
  64     krb5_error_code ret;
  65
  66     memset(c, 0, sizeof(*c));
  67     ret = krb5_copy_principal (context, incred->client, &c->client);
  68     if (ret)
  69         goto fail;
  70     ret = krb5_copy_principal (context, incred->server, &c->server);
  71     if (ret)
  72         goto fail;
  73     ret = krb5_copy_keyblock_contents (context, &incred->session, &c->session);
  74     if (ret)
  75         goto fail;
  76     c->times = incred->times;
  77     ret = krb5_data_copy (&c->ticket,
  78                           incred->ticket.data,
  79                           incred->ticket.length);
  80     if (ret)
  81         goto fail;
  82     ret = krb5_data_copy (&c->second_ticket,
  83                           incred->second_ticket.data,
  84                           incred->second_ticket.length);
  85     if (ret)
  86         goto fail;
  87     ret = copy_AuthorizationData(&incred->authdata, &c->authdata);
  88     if (ret)
  89         goto fail;
  90     ret = krb5_copy_addresses (context,
  91                                &incred->addresses,
  92                                &c->addresses);
  93     if (ret)
  94         goto fail;
  95     c->flags = incred->flags;
  96     return 0;
  97
  98 fail:
  99     krb5_free_creds_contents (context, c);
 100     return ret;
 101 }
 102
 103 krb5_error_code
 104 krb5_copy_creds (krb5_context context,
 105                  const krb5_creds *incred,
 106                  krb5_creds **outcred)
 107 {
 108     krb5_creds *c;
 109
 110     c = malloc (sizeof (*c));
 111     if (c == NULL) {
 112         krb5_set_error_string (context, "malloc: out of memory");
 113         return ENOMEM;
 114     }
 115     memset (c, 0, sizeof(*c));
 116     *outcred = c;
 117     return krb5_copy_creds_contents (context, incred, c);
 118 }
 119
 120 krb5_error_code
 121 krb5_free_creds (krb5_context context, krb5_creds *c)
 122 {
 123     krb5_free_creds_contents (context, c);
 124     free (c);
 125     return 0;
 126 }
 127
 128 /*
 129  * Return TRUE if `mcreds' and `creds' are equal (`whichfields'
 130  * determines what equal means).
 131  */
 132
 133 krb5_boolean
 134 krb5_compare_creds(krb5_context context, krb5_flags whichfields,
 135                    const krb5_creds *mcreds, const krb5_creds *creds)
 136 {
 137     krb5_boolean match;
 138
 139     if(whichfields & KRB5_TC_DONT_MATCH_REALM)
 140         match = krb5_principal_compare_any_realm(context,
 141                                                  mcreds->server,
 142                                                  creds->server);
 143     else
 144         match = krb5_principal_compare(context, mcreds->server, creds->server);
 145     if(match && (whichfields & KRB5_TC_MATCH_KEYTYPE) &&
 146        !krb5_enctypes_compatible_keys (context,
 147                                        mcreds->session.keytype,
 148                                        creds->session.keytype))
 149         match = FALSE;
 150     return match;
 151 }