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 #include "libads/ldap_schema.h"
  23
  24 #ifdef HAVE_LDAP
  25
  26 ADS_STATUS ads_get_attrnames_by_oids(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
  27                                      const char *schema_path,
  28                                      const char **OIDs, size_t num_OIDs,
  29                                      char ***OIDs_out, char ***names, size_t *count)
  30 {
  31         ADS_STATUS status;
  32         LDAPMessage *res = NULL;
  33         LDAPMessage *msg;
  34         char *expr = NULL;
  35         const char *attrs[] = { "lDAPDisplayName", "attributeId", NULL };
  36         int i = 0, p = 0;
  37
  38         if (!ads || !mem_ctx || !names || !count || !OIDs || !OIDs_out) {
  39                 return ADS_ERROR(LDAP_PARAM_ERROR);
  40         }
  41
  42         if (num_OIDs == 0 || OIDs[0] == NULL) {
  43                 return ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  44         }
  45
  46         if ((expr = talloc_asprintf(mem_ctx, "(|")) == NULL) {
  47                 return ADS_ERROR(LDAP_NO_MEMORY);
  48         }
  49
  50         for (i=0; i<num_OIDs; i++) {
  51
  52                 if ((expr = talloc_asprintf_append_buffer(expr, "(attributeId=%s)",
  53                                                    OIDs[i])) == NULL) {
  54                         return ADS_ERROR(LDAP_NO_MEMORY);
  55                 }
  56         }
  57
  58         if ((expr = talloc_asprintf_append_buffer(expr, ")")) == NULL) {
  59                 return ADS_ERROR(LDAP_NO_MEMORY);
  60         }
  61
  62         status = ads_do_search_retry(ads, schema_path,
  63                                      LDAP_SCOPE_SUBTREE, expr, attrs, &res);
  64         if (!ADS_ERR_OK(status)) {
  65                 return status;
  66         }
  67
  68         *count = ads_count_replies(ads, res);
  69         if (*count == 0 || !res) {
  70                 status = ADS_ERROR_NT(NT_STATUS_NONE_MAPPED);
  71                 goto out;
  72         }
  73
  74         if (((*names) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  75                 status = ADS_ERROR(LDAP_NO_MEMORY);
  76                 goto out;
  77         }
  78         if (((*OIDs_out) = TALLOC_ARRAY(mem_ctx, char *, *count)) == NULL) {
  79                 status = ADS_ERROR(LDAP_NO_MEMORY);
  80                 goto out;
  81         }
  82
  83         for (msg = ads_first_entry(ads, res); msg != NULL;
  84              msg = ads_next_entry(ads, msg)) {
  85
  86                 (*names)[p]     = ads_pull_string(ads, mem_ctx, msg,
  87                                                   "lDAPDisplayName");
  88                 (*OIDs_out)[p]  = ads_pull_string(ads, mem_ctx, msg,
  89                                                   "attributeId");
  90                 if (((*names)[p] == NULL) || ((*OIDs_out)[p] == NULL)) {
  91                         status = ADS_ERROR(LDAP_NO_MEMORY);
  92                         goto out;
  93                 }
  94
  95                 p++;
  96         }
  97
  98         if (*count < num_OIDs) {
  99                 status = ADS_ERROR_NT(STATUS_SOME_UNMAPPED);
 100                 goto out;
 101         }
 102
 103         status = ADS_ERROR(LDAP_SUCCESS);
 104 out:
 105         ads_msgfree(ads, res);
 106
 107         return status;
 108 }
 109
 110 const char *ads_get_attrname_by_guid(ADS_STRUCT *ads,
 111                                      const char *schema_path,
 112                                      TALLOC_CTX *mem_ctx,
 113                                      const struct GUID *schema_guid)
 114 {
 115         ADS_STATUS rc;
 116         LDAPMessage *res = NULL;
 117         char *expr = NULL;
 118         const char *attrs[] = { "lDAPDisplayName", NULL };
 119         const char *result = NULL;
 120         char *guid_bin = NULL;
 121
 122         if (!ads || !mem_ctx || !schema_guid) {
 123                 goto done;
 124         }
 125
 126         guid_bin = guid_binstring(mem_ctx, schema_guid);
 127         if (!guid_bin) {
 128                 goto done;
 129         }
 130
 131         expr = talloc_asprintf(mem_ctx, "(schemaIDGUID=%s)", guid_bin);
 132         if (!expr) {
 133                 goto done;
 134         }
 135
 136         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 137                                  expr, attrs, &res);
 138         if (!ADS_ERR_OK(rc)) {
 139                 goto done;
 140         }
 141
 142         if (ads_count_replies(ads, res) != 1) {
 143                 goto done;
 144         }
 145
 146         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 147
 148  done:
 149         TALLOC_FREE(guid_bin);
 150         ads_msgfree(ads, res);
 151         return result;
 152
 153 }
 154
 155 const char *ads_get_attrname_by_oid(ADS_STRUCT *ads, const char *schema_path, TALLOC_CTX *mem_ctx, const char * OID)
 156 {
 157         ADS_STATUS rc;
 158         int count = 0;
 159         LDAPMessage *res = NULL;
 160         char *expr = NULL;
 161         const char *attrs[] = { "lDAPDisplayName", NULL };
 162         char *result;
 163
 164         if (ads == NULL || mem_ctx == NULL || OID == NULL) {
 165                 goto failed;
 166         }
 167
 168         expr = talloc_asprintf(mem_ctx, "(attributeId=%s)", OID);
 169         if (expr == NULL) {
 170                 goto failed;
 171         }
 172
 173         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 174                 expr, attrs, &res);
 175         if (!ADS_ERR_OK(rc)) {
 176                 goto failed;
 177         }
 178
 179         count = ads_count_replies(ads, res);
 180         if (count == 0 || !res) {
 181                 goto failed;
 182         }
 183
 184         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 185         ads_msgfree(ads, res);
 186
 187         return result;
 188
 189 failed:
 190         DEBUG(0,("ads_get_attrname_by_oid: failed to retrieve name for oid: %s\n",
 191                 OID));
 192
 193         ads_msgfree(ads, res);
 194         return NULL;
 195 }
 196 /*********************************************************************
 197 *********************************************************************/
 198
 199 ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 200 {
 201         ADS_STATUS status;
 202         LDAPMessage *res;
 203         const char *schema;
 204         const char *attrs[] = { "schemaNamingContext", NULL };
 205
 206         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 207         if (!ADS_ERR_OK(status)) {
 208                 return status;
 209         }
 210
 211         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 212                 ads_msgfree(ads, res);
 213                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 214         }
 215
 216         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 217                 ads_msgfree(ads, res);
 218                 return ADS_ERROR(LDAP_NO_MEMORY);
 219         }
 220
 221         ads_msgfree(ads, res);
 222
 223         return status;
 224 }
 225
 226 /**
 227  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 228  * @param ads connection to ads server
 229  * @param enum mapping type
 230  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 231  * found in Active Directory)
 232  **/
 233 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 234                                           ADS_STRUCT *ads,
 235                                           enum wb_posix_mapping map_type,
 236                                           struct posix_schema **s )
 237 {
 238         TALLOC_CTX *ctx = NULL;
 239         ADS_STATUS status;
 240         char **oids_out, **names_out;
 241         size_t num_names;
 242         char *schema_path = NULL;
 243         int i;
 244         struct posix_schema *schema = NULL;
 245
 246         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 247                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 248                                         ADS_ATTR_SFU_HOMEDIR_OID,
 249                                         ADS_ATTR_SFU_SHELL_OID,
 250                                         ADS_ATTR_SFU_GECOS_OID,
 251                                         ADS_ATTR_SFU_UID_OID };
 252
 253         const char *oids_sfu20[] = {    ADS_ATTR_SFU20_UIDNUMBER_OID,
 254                                         ADS_ATTR_SFU20_GIDNUMBER_OID,
 255                                         ADS_ATTR_SFU20_HOMEDIR_OID,
 256                                         ADS_ATTR_SFU20_SHELL_OID,
 257                                         ADS_ATTR_SFU20_GECOS_OID,
 258                                         ADS_ATTR_SFU20_UID_OID };
 259
 260         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 261                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 262                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 263                                         ADS_ATTR_RFC2307_SHELL_OID,
 264                                         ADS_ATTR_RFC2307_GECOS_OID,
 265                                         ADS_ATTR_RFC2307_UID_OID };
 266
 267         DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
 268
 269         switch (map_type) {
 270
 271                 case WB_POSIX_MAP_TEMPLATE:
 272                 case WB_POSIX_MAP_UNIXINFO:
 273                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 274                         return ADS_ERROR(LDAP_SUCCESS);
 275
 276                 case WB_POSIX_MAP_SFU:
 277                 case WB_POSIX_MAP_SFU20:
 278                 case WB_POSIX_MAP_RFC2307:
 279                         break;
 280
 281                 default:
 282                         DEBUG(0,("ads_check_posix_schema_mapping: "
 283                                  "unknown enum %d\n", map_type));
 284                         return ADS_ERROR(LDAP_PARAM_ERROR);
 285         }
 286
 287         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 288                 return ADS_ERROR(LDAP_NO_MEMORY);
 289         }
 290
 291         if ( (schema = TALLOC_P(mem_ctx, struct posix_schema)) == NULL ) {
 292                 TALLOC_FREE( ctx );
 293                 return ADS_ERROR(LDAP_NO_MEMORY);
 294         }
 295
 296         status = ads_schema_path(ads, ctx, &schema_path);
 297         if (!ADS_ERR_OK(status)) {
 298                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 299                 goto done;
 300         }
 301
 302         switch (map_type) {
 303                 case WB_POSIX_MAP_SFU:
 304                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 305                                                            ARRAY_SIZE(oids_sfu),
 306                                                            &oids_out, &names_out, &num_names);
 307                         break;
 308                 case WB_POSIX_MAP_SFU20:
 309                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
 310                                                            ARRAY_SIZE(oids_sfu20),
 311                                                            &oids_out, &names_out, &num_names);
 312                         break;
 313                 case WB_POSIX_MAP_RFC2307:
 314                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 315                                                            ARRAY_SIZE(oids_rfc2307),
 316                                                            &oids_out, &names_out, &num_names);
 317                         break;
 318                 default:
 319                         status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 320                         break;
 321         }
 322
 323         if (!ADS_ERR_OK(status)) {
 324                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 325                         ads_errstr(status)));
 326                 goto done;
 327         }
 328
 329         for (i=0; i<num_names; i++) {
 330
 331                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 332
 333                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 334                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
 335                     strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
 336                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 337                         continue;
 338                 }
 339
 340                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 341                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
 342                     strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
 343                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 344                         continue;
 345                 }
 346
 347                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 348                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
 349                     strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
 350                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 351                         continue;
 352                 }
 353
 354                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 355                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
 356                     strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
 357                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 358                         continue;
 359                 }
 360
 361                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 362                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
 363                     strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
 364                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 365                 }
 366
 367                 if (strequal(ADS_ATTR_RFC2307_UID_OID, oids_out[i]) ||
 368                     strequal(ADS_ATTR_SFU_UID_OID, oids_out[i]) ||
 369                     strequal(ADS_ATTR_SFU20_UID_OID, oids_out[i])) {
 370                         schema->posix_uid_attr = talloc_strdup(schema, names_out[i]);
 371                 }
 372         }
 373
 374         if (!schema->posix_uidnumber_attr ||
 375             !schema->posix_gidnumber_attr ||
 376             !schema->posix_homedir_attr ||
 377             !schema->posix_shell_attr ||
 378             !schema->posix_gecos_attr) {
 379                 status = ADS_ERROR(LDAP_NO_MEMORY);
 380                 TALLOC_FREE( schema );
 381                 goto done;
 382         }
 383
 384         *s = schema;
 385
 386         status = ADS_ERROR(LDAP_SUCCESS);
 387
 388 done:
 389         TALLOC_FREE(ctx);
 390
 391         return status;
 392 }
 393
 394 #endif