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 krb5_error_code
  48 kcmss_get_name_2(krb5_context context,
  49                  krb5_ccache id,
  50                  const char **name,
  51                  const char **col,
  52                  const char **sub)
  53 {
  54     if (name)
  55         *name = CACHENAME(id);
  56     if (col)
  57         *col = NULL;
  58     if (sub)
  59         *sub = CACHENAME(id);
  60     return 0;
  61 }
  62
  63 static krb5_error_code
  64 kcmss_resolve_2(krb5_context context,
  65                 krb5_ccache *id,
  66                 const char *res,
  67                 const char *sub)
  68 {
  69     return KRB5_FCC_INTERNAL;
  70 }
  71
  72 static krb5_error_code
  73 kcmss_gen_new(krb5_context context, krb5_ccache *id)
  74 {
  75     return KRB5_FCC_INTERNAL;
  76 }
  77
  78 static krb5_error_code
  79 kcmss_initialize(krb5_context context,
  80                  krb5_ccache id,
  81                  krb5_principal primary_principal)
  82 {
  83     krb5_error_code ret;
  84     kcm_ccache c = KCMCACHE(id);
  85
  86     KCM_ASSERT_VALID(c);
  87
  88     ret = kcm_zero_ccache_data_internal(context, c);
  89     if (ret)
  90         return ret;
  91
  92     ret = krb5_copy_principal(context, primary_principal,
  93                               &c->client);
  94
  95     return ret;
  96 }
  97
  98 static krb5_error_code
  99 kcmss_close(krb5_context context,
 100             krb5_ccache id)
 101 {
 102     kcm_ccache c = KCMCACHE(id);
 103
 104     KCM_ASSERT_VALID(c);
 105
 106     id->data.data = NULL;
 107     id->data.length = 0;
 108
 109     return 0;
 110 }
 111
 112 static krb5_error_code
 113 kcmss_destroy(krb5_context context,
 114               krb5_ccache id)
 115 {
 116     krb5_error_code ret;
 117     kcm_ccache c = KCMCACHE(id);
 118
 119     KCM_ASSERT_VALID(c);
 120
 121     ret = kcm_ccache_destroy(context, CACHENAME(id));
 122
 123     return ret;
 124 }
 125
 126 static krb5_error_code
 127 kcmss_store_cred(krb5_context context,
 128                  krb5_ccache id,
 129                  krb5_creds *creds)
 130 {
 131     krb5_error_code ret;
 132     kcm_ccache c = KCMCACHE(id);
 133     krb5_creds *tmp;
 134
 135     KCM_ASSERT_VALID(c);
 136
 137     ret = kcm_ccache_store_cred_internal(context, c, creds, 1, &tmp);
 138
 139     return ret;
 140 }
 141
 142 static krb5_error_code
 143 kcmss_retrieve(krb5_context context,
 144                krb5_ccache id,
 145                krb5_flags which,
 146                const krb5_creds *mcred,
 147                krb5_creds *creds)
 148 {
 149     krb5_error_code ret;
 150     kcm_ccache c = KCMCACHE(id);
 151     krb5_creds *credp;
 152
 153     KCM_ASSERT_VALID(c);
 154
 155     ret = kcm_ccache_retrieve_cred_internal(context, c, which,
 156                                             mcred, &credp);
 157     if (ret)
 158         return ret;
 159
 160     ret = krb5_copy_creds_contents(context, credp, creds);
 161     if (ret)
 162         return ret;
 163
 164     return 0;
 165 }
 166
 167 static krb5_error_code
 168 kcmss_get_principal(krb5_context context,
 169                     krb5_ccache id,
 170                     krb5_principal *principal)
 171 {
 172     krb5_error_code ret;
 173     kcm_ccache c = KCMCACHE(id);
 174
 175     KCM_ASSERT_VALID(c);
 176
 177     ret = krb5_copy_principal(context, c->client,
 178                               principal);
 179
 180     return ret;
 181 }
 182
 183 static krb5_error_code
 184 kcmss_get_first (krb5_context context,
 185                  krb5_ccache id,
 186                  krb5_cc_cursor *cursor)
 187 {
 188     kcm_ccache c = KCMCACHE(id);
 189
 190     KCM_ASSERT_VALID(c);
 191
 192     *cursor = c->creds;
 193
 194     return (*cursor == NULL) ? KRB5_CC_END : 0;
 195 }
 196
 197 static krb5_error_code
 198 kcmss_get_next (krb5_context context,
 199                 krb5_ccache id,
 200                 krb5_cc_cursor *cursor,
 201                 krb5_creds *creds)
 202 {
 203     krb5_error_code ret;
 204     kcm_ccache c = KCMCACHE(id);
 205
 206     KCM_ASSERT_VALID(c);
 207
 208     ret = krb5_copy_creds_contents(context,
 209                                    &((struct kcm_creds *)cursor)->cred,
 210                                    creds);
 211     if (ret)
 212         return ret;
 213
 214     *cursor = ((struct kcm_creds *)cursor)->next;
 215     if (*cursor == 0)
 216         ret = KRB5_CC_END;
 217
 218     return ret;
 219 }
 220
 221 static krb5_error_code
 222 kcmss_end_get (krb5_context context,
 223                krb5_ccache id,
 224                krb5_cc_cursor *cursor)
 225 {
 226     *cursor = NULL;
 227     return 0;
 228 }
 229
 230 static krb5_error_code
 231 kcmss_remove_cred(krb5_context context,
 232                   krb5_ccache id,
 233                   krb5_flags which,
 234                   krb5_creds *cred)
 235 {
 236     krb5_error_code ret;
 237     kcm_ccache c = KCMCACHE(id);
 238
 239     KCM_ASSERT_VALID(c);
 240
 241     ret = kcm_ccache_remove_cred_internal(context, c, which, cred);
 242
 243     return ret;
 244 }
 245
 246 static krb5_error_code
 247 kcmss_set_flags(krb5_context context,
 248                 krb5_ccache id,
 249                 krb5_flags flags)
 250 {
 251     return 0;
 252 }
 253
 254 static krb5_error_code
 255 kcmss_get_version(krb5_context context,
 256                   krb5_ccache id)
 257 {
 258     return 0;
 259 }
 260
 261 static const krb5_cc_ops krb5_kcmss_ops = {
 262     KRB5_CC_OPS_VERSION_5,
 263     "KCM",
 264     NULL,
 265     NULL,
 266     kcmss_gen_new,
 267     kcmss_initialize,
 268     kcmss_destroy,
 269     kcmss_close,
 270     kcmss_store_cred,
 271     kcmss_retrieve,
 272     kcmss_get_principal,
 273     kcmss_get_first,
 274     kcmss_get_next,
 275     kcmss_end_get,
 276     kcmss_remove_cred,
 277     kcmss_set_flags,
 278     kcmss_get_version,
 279     NULL,
 280     NULL,
 281     NULL,
 282     NULL,
 283     NULL,
 284     NULL,
 285     NULL,
 286     NULL,
 287     NULL,
 288     kcmss_get_name_2,
 289     kcmss_resolve_2,
 290 };
 291
 292 krb5_error_code
 293 kcm_internal_ccache(krb5_context context,
 294                     kcm_ccache c,
 295                     krb5_ccache id)
 296 {
 297     id->ops = &krb5_kcmss_ops;
 298     id->data.length = sizeof(*c);
 299     id->data.data = c;
 300
 301     return 0;
 302 }
 303