crypto/external/bsd/heimdal/dist/kcm/glue.c

   1 /*      $NetBSD: glue.c,v 1.1.1.2 2014/04/24 12:45:27 pettai Exp $      */
   2
   3 /*
   4  * Copyright (c) 2005, PADL Software Pty Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * 3. Neither the name of PADL Software nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "kcm_locl.h"
  36
  37 __RCSID("NetBSD");
  38
  39 /*
  40  * Server-side loopback glue for credentials cache operations; this
  41  * must be initialized with kcm_internal_ccache(), it is not for real
  42  * use. This entire file assumes the cache is locked, it does not do
  43  * any concurrency checking for multithread applications.
  44  */
  45
  46 #define KCMCACHE(X)     ((kcm_ccache)(X)->data.data)
  47 #define CACHENAME(X)    (KCMCACHE(X)->name)
  48
  49 static const char *
  50 kcmss_get_name(krb5_context context,
  51                krb5_ccache id)
  52 {
  53     return CACHENAME(id);
  54 }
  55
  56 static krb5_error_code
  57 kcmss_resolve(krb5_context context, krb5_ccache *id, const char *res)
  58 {
  59     return KRB5_FCC_INTERNAL;
  60 }
  61
  62 static krb5_error_code
  63 kcmss_gen_new(krb5_context context, krb5_ccache *id)
  64 {
  65     return KRB5_FCC_INTERNAL;
  66 }
  67
  68 static krb5_error_code
  69 kcmss_initialize(krb5_context context,
  70                  krb5_ccache id,
  71                  krb5_principal primary_principal)
  72 {
  73     krb5_error_code ret;
  74     kcm_ccache c = KCMCACHE(id);
  75
  76     KCM_ASSERT_VALID(c);
  77
  78     ret = kcm_zero_ccache_data_internal(context, c);
  79     if (ret)
  80         return ret;
  81
  82     ret = krb5_copy_principal(context, primary_principal,
  83                               &c->client);
  84
  85     return ret;
  86 }
  87
  88 static krb5_error_code
  89 kcmss_close(krb5_context context,
  90             krb5_ccache id)
  91 {
  92     kcm_ccache c = KCMCACHE(id);
  93
  94     KCM_ASSERT_VALID(c);
  95
  96     id->data.data = NULL;
  97     id->data.length = 0;
  98
  99     return 0;
 100 }
 101
 102 static krb5_error_code
 103 kcmss_destroy(krb5_context context,
 104               krb5_ccache id)
 105 {
 106     krb5_error_code ret;
 107     kcm_ccache c = KCMCACHE(id);
 108
 109     KCM_ASSERT_VALID(c);
 110
 111     ret = kcm_ccache_destroy(context, CACHENAME(id));
 112
 113     return ret;
 114 }
 115
 116 static krb5_error_code
 117 kcmss_store_cred(krb5_context context,
 118                  krb5_ccache id,
 119                  krb5_creds *creds)
 120 {
 121     krb5_error_code ret;
 122     kcm_ccache c = KCMCACHE(id);
 123     krb5_creds *tmp;
 124
 125     KCM_ASSERT_VALID(c);
 126
 127     ret = kcm_ccache_store_cred_internal(context, c, creds, 1, &tmp);
 128
 129     return ret;
 130 }
 131
 132 static krb5_error_code
 133 kcmss_retrieve(krb5_context context,
 134                krb5_ccache id,
 135                krb5_flags which,
 136                const krb5_creds *mcred,
 137                krb5_creds *creds)
 138 {
 139     krb5_error_code ret;
 140     kcm_ccache c = KCMCACHE(id);
 141     krb5_creds *credp;
 142
 143     KCM_ASSERT_VALID(c);
 144
 145     ret = kcm_ccache_retrieve_cred_internal(context, c, which,
 146                                             mcred, &credp);
 147     if (ret)
 148         return ret;
 149
 150     ret = krb5_copy_creds_contents(context, credp, creds);
 151     if (ret)
 152         return ret;
 153
 154     return 0;
 155 }
 156
 157 static krb5_error_code
 158 kcmss_get_principal(krb5_context context,
 159                     krb5_ccache id,
 160                     krb5_principal *principal)
 161 {
 162     krb5_error_code ret;
 163     kcm_ccache c = KCMCACHE(id);
 164
 165     KCM_ASSERT_VALID(c);
 166
 167     ret = krb5_copy_principal(context, c->client,
 168                               principal);
 169
 170     return ret;
 171 }
 172
 173 static krb5_error_code
 174 kcmss_get_first (krb5_context context,
 175                  krb5_ccache id,
 176                  krb5_cc_cursor *cursor)
 177 {
 178     kcm_ccache c = KCMCACHE(id);
 179
 180     KCM_ASSERT_VALID(c);
 181
 182     *cursor = c->creds;
 183
 184     return (*cursor == NULL) ? KRB5_CC_END : 0;
 185 }
 186
 187 static krb5_error_code
 188 kcmss_get_next (krb5_context context,
 189                 krb5_ccache id,
 190                 krb5_cc_cursor *cursor,
 191                 krb5_creds *creds)
 192 {
 193     krb5_error_code ret;
 194     kcm_ccache c = KCMCACHE(id);
 195
 196     KCM_ASSERT_VALID(c);
 197
 198     ret = krb5_copy_creds_contents(context,
 199                                    &((struct kcm_creds *)cursor)->cred,
 200                                    creds);
 201     if (ret)
 202         return ret;
 203
 204     *cursor = ((struct kcm_creds *)cursor)->next;
 205     if (*cursor == 0)
 206         ret = KRB5_CC_END;
 207
 208     return ret;
 209 }
 210
 211 static krb5_error_code
 212 kcmss_end_get (krb5_context context,
 213                krb5_ccache id,
 214                krb5_cc_cursor *cursor)
 215 {
 216     *cursor = NULL;
 217     return 0;
 218 }
 219
 220 static krb5_error_code
 221 kcmss_remove_cred(krb5_context context,
 222                   krb5_ccache id,
 223                   krb5_flags which,
 224                   krb5_creds *cred)
 225 {
 226     krb5_error_code ret;
 227     kcm_ccache c = KCMCACHE(id);
 228
 229     KCM_ASSERT_VALID(c);
 230
 231     ret = kcm_ccache_remove_cred_internal(context, c, which, cred);
 232
 233     return ret;
 234 }
 235
 236 static krb5_error_code
 237 kcmss_set_flags(krb5_context context,
 238                 krb5_ccache id,
 239                 krb5_flags flags)
 240 {
 241     return 0;
 242 }
 243
 244 static krb5_error_code
 245 kcmss_get_version(krb5_context context,
 246                   krb5_ccache id)
 247 {
 248     return 0;
 249 }
 250
 251 static const krb5_cc_ops krb5_kcmss_ops = {
 252     KRB5_CC_OPS_VERSION,
 253     "KCM",
 254     kcmss_get_name,
 255     kcmss_resolve,
 256     kcmss_gen_new,
 257     kcmss_initialize,
 258     kcmss_destroy,
 259     kcmss_close,
 260     kcmss_store_cred,
 261     kcmss_retrieve,
 262     kcmss_get_principal,
 263     kcmss_get_first,
 264     kcmss_get_next,
 265     kcmss_end_get,
 266     kcmss_remove_cred,
 267     kcmss_set_flags,
 268     kcmss_get_version
 269 };
 270
 271 krb5_error_code
 272 kcm_internal_ccache(krb5_context context,
 273                     kcm_ccache c,
 274                     krb5_ccache id)
 275 {
 276     id->ops = &krb5_kcmss_ops;
 277     id->data.length = sizeof(*c);
 278     id->data.data = c;
 279
 280     return 0;
 281 }
 282