source3/libads/ldap_schema.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ads (active directory) utility library
   4    Copyright (C) Guenther Deschner 2005-2007
   5    Copyright (C) Gerald (Jerry) Carter 2006
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22
  23 #ifdef HAVE_LDAP
  24
  25 ADS_STATUS ads_get_attrnames_by_oids(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
  26                                      const char *schema_path,
  27                                      const char **OIDs, size_t num_OIDs,
  28                                      char ***OIDs_out, char ***names, size_t *count)
  29 {
  30         ADS_STATUS status;
  31         LDAPMessage *res = NULL;
  32         LDAPMessage *msg;
  33         char *expr = NULL;
  34         const char *attrs[] = { "lDAPDisplayName", "attributeId", NULL };
  35         int i = 0, p = 0;
  36
  37         if (!ads || !mem_ctx || !names || !count || !OIDs || !OIDs_out) {
  38                 return ADS_ERROR(LDAP_PARAM_ERROR);
  39         }
  40
  41         if (num_OIDs == 0 || OIDs[0] == NULL) {
  42                 return ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  43         }
  44
  45         if ((expr = talloc_asprintf(mem_ctx, "(|")) == NULL) {
  46                 return ADS_ERROR(LDAP_NO_MEMORY);
  47         }
  48
  49         for (i=0; i<num_OIDs; i++) {
  50
  51                 if ((expr = talloc_asprintf_append_buffer(expr, "(attributeId=%s)",
  52                                                    OIDs[i])) == NULL) {
  53                         return ADS_ERROR(LDAP_NO_MEMORY);
  54                 }
  55         }
  56
  57         if ((expr = talloc_asprintf_append_buffer(expr, ")")) == NULL) {
  58                 return ADS_ERROR(LDAP_NO_MEMORY);
  59         }
  60
  61         status = ads_do_search_retry(ads, schema_path,
  62                                      LDAP_SCOPE_SUBTREE, expr, attrs, &res);
  63         if (!ADS_ERR_OK(status)) {
  64                 return status;
  65         }
  66
  67         *count = ads_count_replies(ads, res);
  68         if (*count == 0 || !res) {
  69                 status = ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  70                 goto out;
  71         }
  72
  73         if (((*names) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  74                 status = ADS_ERROR(LDAP_NO_MEMORY);
  75                 goto out;
  76         }
  77         if (((*OIDs_out) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  78                 status = ADS_ERROR(LDAP_NO_MEMORY);
  79                 goto out;
  80         }
  81
  82         for (msg = ads_first_entry(ads, res); msg != NULL;
  83              msg = ads_next_entry(ads, msg)) {
  84
  85                 (*names)[p]     = ads_pull_string(ads, mem_ctx, msg,
  86                                                   "lDAPDisplayName");
  87                 (*OIDs_out)[p]  = ads_pull_string(ads, mem_ctx, msg,
  88                                                   "attributeId");
  89                 if (((*names)[p] == NULL) || ((*OIDs_out)[p] == NULL)) {
  90                         status = ADS_ERROR(LDAP_NO_MEMORY);
  91                         goto out;
  92                 }
  93
  94                 p++;
  95         }
  96
  97         if (*count < num_OIDs) {
  98                 status = ADS_ERROR_NT(STATUS_SOME_UNMAPPED);
  99                 goto out;
 100         }
 101
 102         status = ADS_ERROR(LDAP_SUCCESS);
 103 out:
 104         ads_msgfree(ads, res);
 105
 106         return status;
 107 }
 108
 109 const char *ads_get_attrname_by_guid(ADS_STRUCT *ads,
 110                                      const char *schema_path,
 111                                      TALLOC_CTX *mem_ctx,
 112                                      const struct GUID *schema_guid)
 113 {
 114         ADS_STATUS rc;
 115         LDAPMessage *res = NULL;
 116         char *expr = NULL;
 117         const char *attrs[] = { "lDAPDisplayName", NULL };
 118         const char *result = NULL;
 119         char *guid_bin = NULL;
 120
 121         if (!ads || !mem_ctx || !schema_guid) {
 122                 goto done;
 123         }
 124
 125         guid_bin = guid_binstring(schema_guid);
 126         if (!guid_bin) {
 127                 goto done;
 128         }
 129
 130         expr = talloc_asprintf(mem_ctx, "(schemaIDGUID=%s)", guid_bin);
 131         if (!expr) {
 132                 goto done;
 133         }
 134
 135         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 136                                  expr, attrs, &res);
 137         if (!ADS_ERR_OK(rc)) {
 138                 goto done;
 139         }
 140
 141         if (ads_count_replies(ads, res) != 1) {
 142                 goto done;
 143         }
 144
 145         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 146
 147  done:
 148         SAFE_FREE(guid_bin);
 149         ads_msgfree(ads, res);
 150         return result;
 151
 152 }
 153
 154 const char *ads_get_attrname_by_oid(ADS_STRUCT *ads, const char *schema_path, TALLOC_CTX *mem_ctx, const char * OID)
 155 {
 156         ADS_STATUS rc;
 157         int count = 0;
 158         LDAPMessage *res = NULL;
 159         char *expr = NULL;
 160         const char *attrs[] = { "lDAPDisplayName", NULL };
 161         char *result;
 162
 163         if (ads == NULL || mem_ctx == NULL || OID == NULL) {
 164                 goto failed;
 165         }
 166
 167         expr = talloc_asprintf(mem_ctx, "(attributeId=%s)", OID);
 168         if (expr == NULL) {
 169                 goto failed;
 170         }
 171
 172         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 173                 expr, attrs, &res);
 174         if (!ADS_ERR_OK(rc)) {
 175                 goto failed;
 176         }
 177
 178         count = ads_count_replies(ads, res);
 179         if (count == 0 || !res) {
 180                 goto failed;
 181         }
 182
 183         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 184         ads_msgfree(ads, res);
 185
 186         return result;
 187
 188 failed:
 189         DEBUG(0,("ads_get_attrname_by_oid: failed to retrieve name for oid: %s\n",
 190                 OID));
 191
 192         ads_msgfree(ads, res);
 193         return NULL;
 194 }
 195 /*********************************************************************
 196 *********************************************************************/
 197
 198 ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 199 {
 200         ADS_STATUS status;
 201         LDAPMessage *res;
 202         const char *schema;
 203         const char *attrs[] = { "schemaNamingContext", NULL };
 204
 205         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 206         if (!ADS_ERR_OK(status)) {
 207                 return status;
 208         }
 209
 210         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 211                 ads_msgfree(ads, res);
 212                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 213         }
 214
 215         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 216                 ads_msgfree(ads, res);
 217                 return ADS_ERROR(LDAP_NO_MEMORY);
 218         }
 219
 220         ads_msgfree(ads, res);
 221
 222         return status;
 223 }
 224
 225 /**
 226  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 227  * @param ads connection to ads server
 228  * @param enum mapping type
 229  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 230  * found in Active Directory)
 231  **/
 232 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 233                                           ADS_STRUCT *ads,
 234                                           enum wb_posix_mapping map_type,
 235                                           struct posix_schema **s )
 236 {
 237         TALLOC_CTX *ctx = NULL;
 238         ADS_STATUS status;
 239         char **oids_out, **names_out;
 240         size_t num_names;
 241         char *schema_path = NULL;
 242         int i;
 243         struct posix_schema *schema = NULL;
 244
 245         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 246                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 247                                         ADS_ATTR_SFU_HOMEDIR_OID,
 248                                         ADS_ATTR_SFU_SHELL_OID,
 249                                         ADS_ATTR_SFU_GECOS_OID};
 250
 251         const char *oids_sfu20[] = {    ADS_ATTR_SFU20_UIDNUMBER_OID,
 252                                         ADS_ATTR_SFU20_GIDNUMBER_OID,
 253                                         ADS_ATTR_SFU20_HOMEDIR_OID,
 254                                         ADS_ATTR_SFU20_SHELL_OID,
 255                                         ADS_ATTR_SFU20_GECOS_OID};
 256
 257         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 258                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 259                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 260                                         ADS_ATTR_RFC2307_SHELL_OID,
 261                                         ADS_ATTR_RFC2307_GECOS_OID };
 262
 263         DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
 264
 265         switch (map_type) {
 266
 267                 case WB_POSIX_MAP_TEMPLATE:
 268                 case WB_POSIX_MAP_UNIXINFO:
 269                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 270                         return ADS_ERROR(LDAP_SUCCESS);
 271
 272                 case WB_POSIX_MAP_SFU:
 273                 case WB_POSIX_MAP_SFU20:
 274                 case WB_POSIX_MAP_RFC2307:
 275                         break;
 276
 277                 default:
 278                         DEBUG(0,("ads_check_posix_schema_mapping: "
 279                                  "unknown enum %d\n", map_type));
 280                         return ADS_ERROR(LDAP_PARAM_ERROR);
 281         }
 282
 283         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 284                 return ADS_ERROR(LDAP_NO_MEMORY);
 285         }
 286
 287         if ( (schema = TALLOC_P(mem_ctx, struct posix_schema)) == NULL ) {
 288                 TALLOC_FREE( ctx );
 289                 return ADS_ERROR(LDAP_NO_MEMORY);
 290         }
 291
 292         status = ads_schema_path(ads, ctx, &schema_path);
 293         if (!ADS_ERR_OK(status)) {
 294                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 295                 goto done;
 296         }
 297
 298         switch (map_type) {
 299                 case WB_POSIX_MAP_SFU:
 300                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 301                                                            ARRAY_SIZE(oids_sfu),
 302                                                            &oids_out, &names_out, &num_names);
 303                         break;
 304                 case WB_POSIX_MAP_SFU20:
 305                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
 306                                                            ARRAY_SIZE(oids_sfu20),
 307                                                            &oids_out, &names_out, &num_names);
 308                         break;
 309                 case WB_POSIX_MAP_RFC2307:
 310                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 311                                                            ARRAY_SIZE(oids_rfc2307),
 312                                                            &oids_out, &names_out, &num_names);
 313                         break;
 314                 default:
 315                         status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 316                         break;
 317         }
 318
 319         if (!ADS_ERR_OK(status)) {
 320                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 321                         ads_errstr(status)));
 322                 goto done;
 323         }
 324
 325         for (i=0; i<num_names; i++) {
 326
 327                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 328
 329                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 330                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
 331                     strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
 332                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 333                         continue;
 334                 }
 335
 336                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 337                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
 338                     strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
 339                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 340                         continue;
 341                 }
 342
 343                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 344                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
 345                     strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
 346                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 347                         continue;
 348                 }
 349
 350                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 351                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
 352                     strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
 353                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 354                         continue;
 355                 }
 356
 357                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 358                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
 359                     strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
 360                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 361                 }
 362         }
 363
 364         if (!schema->posix_uidnumber_attr ||
 365             !schema->posix_gidnumber_attr ||
 366             !schema->posix_homedir_attr ||
 367             !schema->posix_shell_attr ||
 368             !schema->posix_gecos_attr) {
 369                 status = ADS_ERROR(LDAP_NO_MEMORY);
 370                 TALLOC_FREE( schema );
 371                 goto done;
 372         }
 373
 374         *s = schema;
 375
 376         status = ADS_ERROR(LDAP_SUCCESS);
 377
 378 done:
 379         TALLOC_FREE(ctx);
 380
 381         return status;
 382 }
 383
 384 #endif