crypto/dist/heimdal/kcm/glue.c

   1 /*
   2  * Copyright (c) 2005, PADL Software Pty Ltd.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. Neither the name of PADL Software nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "kcm_locl.h"
  34
  35 __RCSID("$Heimdal: glue.c 14566 2005-02-06 01:22:49Z lukeh $"
  36         "$NetBSD$");
  37
  38 /*
  39  * Server-side loopback glue for credentials cache operations; this
  40  * must be initialized with kcm_internal_ccache(), it is not for real
  41  * use. This entire file assumes the cache is locked, it does not do
  42  * any concurrency checking for multithread applications.
  43  */
  44
  45 #define KCMCACHE(X)     ((kcm_ccache)(X)->data.data)
  46 #define CACHENAME(X)    (KCMCACHE(X)->name)
  47
  48 static const char *
  49 kcmss_get_name(krb5_context context,
  50                krb5_ccache id)
  51 {
  52     return CACHENAME(id);
  53 }
  54
  55 static krb5_error_code
  56 kcmss_resolve(krb5_context context, krb5_ccache *id, const char *res)
  57 {
  58     return KRB5_FCC_INTERNAL;
  59 }
  60
  61 static krb5_error_code
  62 kcmss_gen_new(krb5_context context, krb5_ccache *id)
  63 {
  64     return KRB5_FCC_INTERNAL;
  65 }
  66
  67 static krb5_error_code
  68 kcmss_initialize(krb5_context context,
  69                  krb5_ccache id,
  70                  krb5_principal primary_principal)
  71 {
  72     krb5_error_code ret;
  73     kcm_ccache c = KCMCACHE(id);
  74
  75     KCM_ASSERT_VALID(c);
  76
  77     ret = kcm_zero_ccache_data_internal(context, c);
  78     if (ret)
  79         return ret;
  80
  81     ret = krb5_copy_principal(context, primary_principal,
  82                               &c->client);
  83
  84     return ret;
  85 }
  86
  87 static krb5_error_code
  88 kcmss_close(krb5_context context,
  89             krb5_ccache id)
  90 {
  91     kcm_ccache c = KCMCACHE(id);
  92
  93     KCM_ASSERT_VALID(c);
  94
  95     id->data.data = NULL;
  96     id->data.length = 0;
  97
  98     return 0;
  99 }
 100
 101 static krb5_error_code
 102 kcmss_destroy(krb5_context context,
 103               krb5_ccache id)
 104 {
 105     krb5_error_code ret;
 106     kcm_ccache c = KCMCACHE(id);
 107
 108     KCM_ASSERT_VALID(c);
 109
 110     ret = kcm_ccache_destroy(context, CACHENAME(id));
 111
 112     return ret;
 113 }
 114
 115 static krb5_error_code
 116 kcmss_store_cred(krb5_context context,
 117                  krb5_ccache id,
 118                  krb5_creds *creds)
 119 {
 120     krb5_error_code ret;
 121     kcm_ccache c = KCMCACHE(id);
 122     krb5_creds *tmp;
 123
 124     KCM_ASSERT_VALID(c);
 125
 126     ret = kcm_ccache_store_cred_internal(context, c, creds, 1, &tmp);
 127
 128     return ret;
 129 }
 130
 131 static krb5_error_code
 132 kcmss_retrieve(krb5_context context,
 133                krb5_ccache id,
 134                krb5_flags which,
 135                const krb5_creds *mcred,
 136                krb5_creds *creds)
 137 {
 138     krb5_error_code ret;
 139     kcm_ccache c = KCMCACHE(id);
 140     krb5_creds *credp;
 141
 142     KCM_ASSERT_VALID(c);
 143
 144     ret = kcm_ccache_retrieve_cred_internal(context, c, which,
 145                                             mcred, &credp);
 146     if (ret)
 147         return ret;
 148
 149     ret = krb5_copy_creds_contents(context, credp, creds);
 150     if (ret)
 151         return ret;
 152
 153     return 0;
 154 }
 155
 156 static krb5_error_code
 157 kcmss_get_principal(krb5_context context,
 158                     krb5_ccache id,
 159                     krb5_principal *principal)
 160 {
 161     krb5_error_code ret;
 162     kcm_ccache c = KCMCACHE(id);
 163
 164     KCM_ASSERT_VALID(c);
 165
 166     ret = krb5_copy_principal(context, c->client,
 167                               principal);
 168
 169     return ret;
 170 }
 171
 172 static krb5_error_code
 173 kcmss_get_first (krb5_context context,
 174                  krb5_ccache id,
 175                  krb5_cc_cursor *cursor)
 176 {
 177     kcm_ccache c = KCMCACHE(id);
 178
 179     KCM_ASSERT_VALID(c);
 180
 181     *cursor = c->creds;
 182
 183     return (*cursor == NULL) ? KRB5_CC_END : 0;
 184 }
 185
 186 static krb5_error_code
 187 kcmss_get_next (krb5_context context,
 188                 krb5_ccache id,
 189                 krb5_cc_cursor *cursor,
 190                 krb5_creds *creds)
 191 {
 192     krb5_error_code ret;
 193     kcm_ccache c = KCMCACHE(id);
 194
 195     KCM_ASSERT_VALID(c);
 196
 197     ret = krb5_copy_creds_contents(context,
 198                                    &((struct kcm_creds *)cursor)->cred,
 199                                    creds);
 200     if (ret)
 201         return ret;
 202
 203     *cursor = ((struct kcm_creds *)cursor)->next;
 204     if (*cursor == 0)
 205         ret = KRB5_CC_END;
 206
 207     return ret;
 208 }
 209
 210 static krb5_error_code
 211 kcmss_end_get (krb5_context context,
 212                krb5_ccache id,
 213                krb5_cc_cursor *cursor)
 214 {
 215     *cursor = NULL;
 216     return 0;
 217 }
 218
 219 static krb5_error_code
 220 kcmss_remove_cred(krb5_context context,
 221                   krb5_ccache id,
 222                   krb5_flags which,
 223                   krb5_creds *cred)
 224 {
 225     krb5_error_code ret;
 226     kcm_ccache c = KCMCACHE(id);
 227
 228     KCM_ASSERT_VALID(c);
 229
 230     ret = kcm_ccache_remove_cred_internal(context, c, which, cred);
 231
 232     return ret;
 233 }
 234
 235 static krb5_error_code
 236 kcmss_set_flags(krb5_context context,
 237                 krb5_ccache id,
 238                 krb5_flags flags)
 239 {
 240     return 0;
 241 }
 242
 243 static krb5_error_code
 244 kcmss_get_version(krb5_context context,
 245                   krb5_ccache id)
 246 {
 247     return 0;
 248 }
 249
 250 static const krb5_cc_ops krb5_kcmss_ops = {
 251     "KCM",
 252     kcmss_get_name,
 253     kcmss_resolve,
 254     kcmss_gen_new,
 255     kcmss_initialize,
 256     kcmss_destroy,
 257     kcmss_close,
 258     kcmss_store_cred,
 259     kcmss_retrieve,
 260     kcmss_get_principal,
 261     kcmss_get_first,
 262     kcmss_get_next,
 263     kcmss_end_get,
 264     kcmss_remove_cred,
 265     kcmss_set_flags,
 266     kcmss_get_version
 267 };
 268
 269 krb5_error_code
 270 kcm_internal_ccache(krb5_context context,
 271                     kcm_ccache c,
 272                     krb5_ccache id)
 273 {
 274     id->ops = &krb5_kcmss_ops;
 275     id->data.length = sizeof(*c);
 276     id->data.data = c;
 277
 278     return 0;
 279 }
 280