source4/kdc/sdb_to_hdb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Database Glue between Samba and the KDC
   5
   6    Copyright (C) Guenther Deschner <gd@samba.org> 2014
   7    Copyright (C) Andreas Schneider <asn@samba.org> 2014
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include <hdb.h>
  26 #include "sdb.h"
  27 #include "sdb_hdb.h"
  28 #include "lib/krb5_wrap/krb5_samba.h"
  29 #include "kdc/samba_kdc.h"
  30
  31 static void sdb_flags_to_hdb_flags(const struct SDBFlags *s,
  32                                    HDBFlags *h)
  33 {
  34         SMB_ASSERT(sizeof(struct SDBFlags) == sizeof(HDBFlags));
  35
  36         h->initial = s->initial;
  37         h->forwardable = s->forwardable;
  38         h->proxiable = s->proxiable;
  39         h->renewable = s->renewable;
  40         h->postdate = s->postdate;
  41         h->server = s->server;
  42         h->client = s->client;
  43         h->invalid = s->invalid;
  44         h->require_preauth = s->require_preauth;
  45         h->change_pw = s->change_pw;
  46         h->require_hwauth = s->require_hwauth;
  47         h->ok_as_delegate = s->ok_as_delegate;
  48         h->user_to_user = s->user_to_user;
  49         h->immutable = s->immutable;
  50         h->trusted_for_delegation = s->trusted_for_delegation;
  51         h->allow_kerberos4 = s->allow_kerberos4;
  52         h->allow_digest = s->allow_digest;
  53         h->locked_out = s->locked_out;
  54         h->require_pwchange = s->require_pwchange;
  55         h->materialize = s->materialize;
  56         h->virtual_keys = s->virtual_keys;
  57         h->virtual = s->virtual;
  58         h->synthetic = s->synthetic;
  59         h->no_auth_data_reqd = s->no_auth_data_reqd;
  60         h->_unused24 = s->_unused24;
  61         h->_unused25 = s->_unused25;
  62         h->_unused26 = s->_unused26;
  63         h->_unused27 = s->_unused27;
  64         h->_unused28 = s->_unused28;
  65         h->_unused29 = s->_unused29;
  66         h->force_canonicalize = s->force_canonicalize;
  67         h->do_not_store = s->do_not_store;
  68 }
  69
  70 static int sdb_salt_to_Salt(const struct sdb_salt *s, Salt *h)
  71 {
  72         int ret;
  73
  74         h->type = s->type;
  75         ret = smb_krb5_copy_data_contents(&h->salt, s->salt.data, s->salt.length);
  76         if (ret != 0) {
  77                 free_Salt(h);
  78                 return ENOMEM;
  79         }
  80         h->opaque = NULL;
  81
  82         return 0;
  83 }
  84
  85 static int sdb_key_to_Key(const struct sdb_key *s, Key *h)
  86 {
  87         int rc;
  88
  89         ZERO_STRUCTP(h);
  90
  91         h->key.keytype = s->key.keytype;
  92         rc = smb_krb5_copy_data_contents(&h->key.keyvalue,
  93                                          s->key.keyvalue.data,
  94                                          s->key.keyvalue.length);
  95         if (rc != 0) {
  96                 goto error_nomem;
  97         }
  98
  99         if (s->salt != NULL) {
 100                 h->salt = malloc(sizeof(Salt));
 101                 if (h->salt == NULL) {
 102                         goto error_nomem;
 103                 }
 104
 105                 rc = sdb_salt_to_Salt(s->salt,
 106                                       h->salt);
 107                 if (rc != 0) {
 108                         goto error_nomem;
 109                 }
 110         } else {
 111                 h->salt = NULL;
 112         }
 113
 114         return 0;
 115
 116 error_nomem:
 117         free_Key(h);
 118         return ENOMEM;
 119 }
 120
 121 static int sdb_keys_to_Keys(const struct sdb_keys *s, Keys *h)
 122 {
 123         int ret, i;
 124
 125         h->len = s->len;
 126         if (s->val != NULL) {
 127                 h->val = malloc(h->len * sizeof(Key));
 128                 if (h->val == NULL) {
 129                         return ENOMEM;
 130                 }
 131                 for (i = 0; i < h->len; i++) {
 132                         ret = sdb_key_to_Key(&s->val[i],
 133                                              &h->val[i]);
 134                         if (ret != 0) {
 135                                 free_Keys(h);
 136                                 return ENOMEM;
 137                         }
 138                 }
 139         } else {
 140                 h->val = NULL;
 141         }
 142
 143         return 0;
 144 }
 145
 146 static int sdb_event_to_Event(krb5_context context,
 147                               const struct sdb_event *s, Event *h)
 148 {
 149         int ret;
 150
 151         if (s->principal != NULL) {
 152                 ret = krb5_copy_principal(context,
 153                                           s->principal,
 154                                           &h->principal);
 155                 if (ret != 0) {
 156                         free_Event(h);
 157                         return ret;
 158                 }
 159         } else {
 160                 h->principal = NULL;
 161         }
 162         h->time = s->time;
 163
 164         return 0;
 165 }
 166
 167
 168 static int sdb_entry_to_hdb_entry(krb5_context context,
 169                                   const struct sdb_entry *s,
 170                                   hdb_entry *h)
 171 {
 172         unsigned int i;
 173         int rc;
 174
 175         ZERO_STRUCTP(h);
 176
 177         rc = krb5_copy_principal(context,
 178                                  s->principal,
 179                                  &h->principal);
 180         if (rc != 0) {
 181                 return rc;
 182         }
 183
 184         h->kvno = s->kvno;
 185
 186         rc = sdb_keys_to_Keys(&s->keys, &h->keys);
 187         if (rc != 0) {
 188                 goto error;
 189         }
 190
 191         rc = sdb_event_to_Event(context,
 192                                  &s->created_by,
 193                                  &h->created_by);
 194         if (rc != 0) {
 195                 goto error;
 196         }
 197
 198         if (s->modified_by) {
 199                 h->modified_by = malloc(sizeof(Event));
 200                 if (h->modified_by == NULL) {
 201                         rc = ENOMEM;
 202                         goto error;
 203                 }
 204
 205                 rc = sdb_event_to_Event(context,
 206                                          s->modified_by,
 207                                          h->modified_by);
 208                 if (rc != 0) {
 209                         goto error;
 210                 }
 211         } else {
 212                 h->modified_by = NULL;
 213         }
 214
 215         if (s->valid_start != NULL) {
 216                 h->valid_start = malloc(sizeof(KerberosTime));
 217                 if (h->valid_start == NULL) {
 218                         rc = ENOMEM;
 219                         goto error;
 220                 }
 221                 *h->valid_start = *s->valid_start;
 222         } else {
 223                 h->valid_start = NULL;
 224         }
 225
 226         if (s->valid_end != NULL) {
 227                 h->valid_end = malloc(sizeof(KerberosTime));
 228                 if (h->valid_end == NULL) {
 229                         rc = ENOMEM;
 230                         goto error;
 231                 }
 232                 *h->valid_end = *s->valid_end;
 233         } else {
 234                 h->valid_end = NULL;
 235         }
 236
 237         if (s->pw_end != NULL) {
 238                 h->pw_end = malloc(sizeof(KerberosTime));
 239                 if (h->pw_end == NULL) {
 240                         rc = ENOMEM;
 241                         goto error;
 242                 }
 243                 *h->pw_end = *s->pw_end;
 244         } else {
 245                 h->pw_end = NULL;
 246         }
 247
 248         if (s->max_life != NULL) {
 249                 h->max_life = malloc(sizeof(unsigned int));
 250                 if (h->max_life == NULL) {
 251                         rc = ENOMEM;
 252                         goto error;
 253                 }
 254                 *h->max_life = *s->max_life;
 255         } else {
 256                 h->max_life = NULL;
 257         }
 258
 259         if (s->max_renew != NULL) {
 260                 h->max_renew = malloc(sizeof(unsigned int));
 261                 if (h->max_renew == NULL) {
 262                         rc = ENOMEM;
 263                         goto error;
 264                 }
 265                 *h->max_renew = *s->max_renew;
 266         } else {
 267                 h->max_renew = NULL;
 268         }
 269
 270         sdb_flags_to_hdb_flags(&s->flags, &h->flags);
 271
 272         h->etypes = NULL;
 273         if (h->keys.val != NULL) {
 274                 h->etypes = malloc(sizeof(*h->etypes));
 275                 if (h->etypes == NULL) {
 276                         rc = ENOMEM;
 277                         goto error;
 278                 }
 279
 280                 h->etypes->len = s->keys.len;
 281
 282                 h->etypes->val = calloc(h->etypes->len, sizeof(int));
 283                 if (h->etypes->val == NULL) {
 284                         rc = ENOMEM;
 285                         goto error;
 286                 }
 287
 288                 for (i = 0; i < h->etypes->len; i++) {
 289                         Key k = h->keys.val[i];
 290
 291                         h->etypes->val[i] = KRB5_KEY_TYPE(&(k.key));
 292                 }
 293         }
 294
 295         return 0;
 296 error:
 297         free_hdb_entry(h);
 298         return rc;
 299 }
 300
 301 static int samba_kdc_hdb_entry_destructor(struct samba_kdc_entry *p)
 302 {
 303         hdb_entry *entry_ex = p->entry_ex;
 304         free_hdb_entry(entry_ex);
 305
 306         return 0;
 307 }
 308
 309 int sdb_entry_ex_to_hdb_entry_ex(krb5_context context,
 310                                  const struct sdb_entry_ex *s,
 311                                  hdb_entry *h)
 312 {
 313         int ret;
 314
 315         ret = sdb_entry_to_hdb_entry(context, &s->entry, h);
 316         if (ret != 0) {
 317                 return ret;
 318         }
 319
 320         if (s->ctx != NULL) {
 321                 struct samba_kdc_entry *skdc_entry;
 322
 323                 skdc_entry = talloc_get_type(s->ctx, struct samba_kdc_entry);
 324
 325                 h->context = skdc_entry;
 326
 327                 talloc_set_destructor(skdc_entry,
 328                                       samba_kdc_hdb_entry_destructor);
 329         }
 330
 331         return 0;
 332 }