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("$Id$");
  36
  37 /*
  38  * Server-side loopback glue for credentials cache operations; this
  39  * must be initialized with kcm_internal_ccache(), it is not for real
  40  * use. This entire file assumes the cache is locked, it does not do
  41  * any concurrency checking for multithread applications.
  42  */
  43
  44 #define KCMCACHE(X)     ((kcm_ccache)(X)->data.data)
  45 #define CACHENAME(X)    (KCMCACHE(X)->name)
  46
  47 static const char *
  48 kcmss_get_name(krb5_context context,
  49                krb5_ccache id)
  50 {
  51     return CACHENAME(id);
  52 }
  53
  54 static krb5_error_code
  55 kcmss_resolve(krb5_context context, krb5_ccache *id, const char *res)
  56 {
  57     return KRB5_FCC_INTERNAL;
  58 }
  59
  60 static krb5_error_code
  61 kcmss_gen_new(krb5_context context, krb5_ccache *id)
  62 {
  63     return KRB5_FCC_INTERNAL;
  64 }
  65
  66 static krb5_error_code
  67 kcmss_initialize(krb5_context context,
  68                  krb5_ccache id,
  69                  krb5_principal primary_principal)
  70 {
  71     krb5_error_code ret;
  72     kcm_ccache c = KCMCACHE(id);
  73
  74     KCM_ASSERT_VALID(c);
  75
  76     ret = kcm_zero_ccache_data_internal(context, c);
  77     if (ret)
  78         return ret;
  79
  80     ret = krb5_copy_principal(context, primary_principal,
  81                               &c->client);
  82
  83     return ret;
  84 }
  85
  86 static krb5_error_code
  87 kcmss_close(krb5_context context,
  88             krb5_ccache id)
  89 {
  90     kcm_ccache c = KCMCACHE(id);
  91
  92     KCM_ASSERT_VALID(c);
  93
  94     id->data.data = NULL;
  95     id->data.length = 0;
  96
  97     return 0;
  98 }
  99
 100 static krb5_error_code
 101 kcmss_destroy(krb5_context context,
 102               krb5_ccache id)
 103 {
 104     krb5_error_code ret;
 105     kcm_ccache c = KCMCACHE(id);
 106
 107     KCM_ASSERT_VALID(c);
 108
 109     ret = kcm_ccache_destroy(context, CACHENAME(id));
 110
 111     return ret;
 112 }
 113
 114 static krb5_error_code
 115 kcmss_store_cred(krb5_context context,
 116                  krb5_ccache id,
 117                  krb5_creds *creds)
 118 {
 119     krb5_error_code ret;
 120     kcm_ccache c = KCMCACHE(id);
 121     krb5_creds *tmp;
 122
 123     KCM_ASSERT_VALID(c);
 124
 125     ret = kcm_ccache_store_cred_internal(context, c, creds, 1, &tmp);
 126
 127     return ret;
 128 }
 129
 130 static krb5_error_code
 131 kcmss_retrieve(krb5_context context,
 132                krb5_ccache id,
 133                krb5_flags which,
 134                const krb5_creds *mcred,
 135                krb5_creds *creds)
 136 {
 137     krb5_error_code ret;
 138     kcm_ccache c = KCMCACHE(id);
 139     krb5_creds *credp;
 140
 141     KCM_ASSERT_VALID(c);
 142
 143     ret = kcm_ccache_retrieve_cred_internal(context, c, which,
 144                                             mcred, &credp);
 145     if (ret)
 146         return ret;
 147
 148     ret = krb5_copy_creds_contents(context, credp, creds);
 149     if (ret)
 150         return ret;
 151
 152     return 0;
 153 }
 154
 155 static krb5_error_code
 156 kcmss_get_principal(krb5_context context,
 157                     krb5_ccache id,
 158                     krb5_principal *principal)
 159 {
 160     krb5_error_code ret;
 161     kcm_ccache c = KCMCACHE(id);
 162
 163     KCM_ASSERT_VALID(c);
 164
 165     ret = krb5_copy_principal(context, c->client,
 166                               principal);
 167
 168     return ret;
 169 }
 170
 171 static krb5_error_code
 172 kcmss_get_first (krb5_context context,
 173                  krb5_ccache id,
 174                  krb5_cc_cursor *cursor)
 175 {
 176     kcm_ccache c = KCMCACHE(id);
 177
 178     KCM_ASSERT_VALID(c);
 179
 180     *cursor = c->creds;
 181
 182     return (*cursor == NULL) ? KRB5_CC_END : 0;
 183 }
 184
 185 static krb5_error_code
 186 kcmss_get_next (krb5_context context,
 187                 krb5_ccache id,
 188                 krb5_cc_cursor *cursor,
 189                 krb5_creds *creds)
 190 {
 191     krb5_error_code ret;
 192     kcm_ccache c = KCMCACHE(id);
 193
 194     KCM_ASSERT_VALID(c);
 195
 196     ret = krb5_copy_creds_contents(context,
 197                                    &((struct kcm_creds *)cursor)->cred,
 198                                    creds);
 199     if (ret)
 200         return ret;
 201
 202     *cursor = ((struct kcm_creds *)cursor)->next;
 203     if (*cursor == 0)
 204         ret = KRB5_CC_END;
 205
 206     return ret;
 207 }
 208
 209 static krb5_error_code
 210 kcmss_end_get (krb5_context context,
 211                krb5_ccache id,
 212                krb5_cc_cursor *cursor)
 213 {
 214     *cursor = NULL;
 215     return 0;
 216 }
 217
 218 static krb5_error_code
 219 kcmss_remove_cred(krb5_context context,
 220                   krb5_ccache id,
 221                   krb5_flags which,
 222                   krb5_creds *cred)
 223 {
 224     krb5_error_code ret;
 225     kcm_ccache c = KCMCACHE(id);
 226
 227     KCM_ASSERT_VALID(c);
 228
 229     ret = kcm_ccache_remove_cred_internal(context, c, which, cred);
 230
 231     return ret;
 232 }
 233
 234 static krb5_error_code
 235 kcmss_set_flags(krb5_context context,
 236                 krb5_ccache id,
 237                 krb5_flags flags)
 238 {
 239     return 0;
 240 }
 241
 242 static krb5_error_code
 243 kcmss_get_version(krb5_context context,
 244                   krb5_ccache id)
 245 {
 246     return 0;
 247 }
 248
 249 static const krb5_cc_ops krb5_kcmss_ops = {
 250     "KCM",
 251     kcmss_get_name,
 252     kcmss_resolve,
 253     kcmss_gen_new,
 254     kcmss_initialize,
 255     kcmss_destroy,
 256     kcmss_close,
 257     kcmss_store_cred,
 258     kcmss_retrieve,
 259     kcmss_get_principal,
 260     kcmss_get_first,
 261     kcmss_get_next,
 262     kcmss_end_get,
 263     kcmss_remove_cred,
 264     kcmss_set_flags,
 265     kcmss_get_version
 266 };
 267
 268 krb5_error_code
 269 kcm_internal_ccache(krb5_context context,
 270                     kcm_ccache c,
 271                     krb5_ccache id)
 272 {
 273     id->ops = &krb5_kcmss_ops;
 274     id->data.length = sizeof(*c);
 275     id->data.data = c;
 276
 277     return 0;
 278 }
 279