source3/libads/ldap_schema.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    ads (active directory) utility library
   4    Copyright (C) Guenther Deschner 2005-2006
   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(expr, "(attributeId=%s)",
  52                                                    OIDs[i])) == NULL) {
  53                         return ADS_ERROR(LDAP_NO_MEMORY);
  54                 }
  55         }
  56
  57         if ((expr = talloc_asprintf_append(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_oid(ADS_STRUCT *ads, const char *schema_path, TALLOC_CTX *mem_ctx, const char * OID)
 110 {
 111         ADS_STATUS rc;
 112         int count = 0;
 113         LDAPMessage *res = NULL;
 114         char *expr = NULL;
 115         const char *attrs[] = { "lDAPDisplayName", NULL };
 116         char *result;
 117
 118         if (ads == NULL || mem_ctx == NULL || OID == NULL) {
 119                 goto failed;
 120         }
 121
 122         expr = talloc_asprintf(mem_ctx, "(attributeId=%s)", OID);
 123         if (expr == NULL) {
 124                 goto failed;
 125         }
 126
 127         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 128                 expr, attrs, &res);
 129         if (!ADS_ERR_OK(rc)) {
 130                 goto failed;
 131         }
 132
 133         count = ads_count_replies(ads, res);
 134         if (count == 0 || !res) {
 135                 goto failed;
 136         }
 137
 138         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 139         ads_msgfree(ads, res);
 140
 141         return result;
 142
 143 failed:
 144         DEBUG(0,("ads_get_attrname_by_oid: failed to retrieve name for oid: %s\n",
 145                 OID));
 146
 147         ads_msgfree(ads, res);
 148         return NULL;
 149 }
 150
 151 /*********************************************************************
 152 *********************************************************************/
 153
 154 static ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 155 {
 156         ADS_STATUS status;
 157         LDAPMessage *res;
 158         const char *schema;
 159         const char *attrs[] = { "schemaNamingContext", NULL };
 160
 161         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 162         if (!ADS_ERR_OK(status)) {
 163                 return status;
 164         }
 165
 166         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 167                 ads_msgfree(ads, res);
 168                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 169         }
 170
 171         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 172                 ads_msgfree(ads, res);
 173                 return ADS_ERROR(LDAP_NO_MEMORY);
 174         }
 175
 176         ads_msgfree(ads, res);
 177
 178         return status;
 179 }
 180
 181 /**
 182  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 183  * @param ads connection to ads server
 184  * @param enum mapping type
 185  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 186  * found in Active Directory)
 187  **/
 188 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 189                                           ADS_STRUCT *ads,
 190                                           enum wb_posix_mapping map_type,
 191                                           struct posix_schema **s )
 192 {
 193         TALLOC_CTX *ctx = NULL;
 194         ADS_STATUS status;
 195         char **oids_out, **names_out;
 196         size_t num_names;
 197         char *schema_path = NULL;
 198         int i;
 199         struct posix_schema *schema = NULL;
 200
 201         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 202                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 203                                         ADS_ATTR_SFU_HOMEDIR_OID,
 204                                         ADS_ATTR_SFU_SHELL_OID,
 205                                         ADS_ATTR_SFU_GECOS_OID};
 206
 207         const char *oids_sfu20[] = {    ADS_ATTR_SFU20_UIDNUMBER_OID,
 208                                         ADS_ATTR_SFU20_GIDNUMBER_OID,
 209                                         ADS_ATTR_SFU20_HOMEDIR_OID,
 210                                         ADS_ATTR_SFU20_SHELL_OID,
 211                                         ADS_ATTR_SFU20_GECOS_OID};
 212
 213         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 214                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 215                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 216                                         ADS_ATTR_RFC2307_SHELL_OID,
 217                                         ADS_ATTR_RFC2307_GECOS_OID };
 218
 219         DEBUG(10,("ads_check_posix_schema_mapping for schema mode: %d\n", map_type));
 220
 221         switch (map_type) {
 222
 223                 case WB_POSIX_MAP_TEMPLATE:
 224                 case WB_POSIX_MAP_UNIXINFO:
 225                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 226                         return ADS_ERROR(LDAP_SUCCESS);
 227
 228                 case WB_POSIX_MAP_SFU:
 229                 case WB_POSIX_MAP_SFU20:
 230                 case WB_POSIX_MAP_RFC2307:
 231                         break;
 232
 233                 default:
 234                         DEBUG(0,("ads_check_posix_schema_mapping: "
 235                                  "unknown enum %d\n", map_type));
 236                         return ADS_ERROR(LDAP_PARAM_ERROR);
 237         }
 238
 239         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 240                 return ADS_ERROR(LDAP_NO_MEMORY);
 241         }
 242
 243         if ( (schema = TALLOC_P(mem_ctx, struct posix_schema)) == NULL ) {
 244                 TALLOC_FREE( ctx );
 245                 return ADS_ERROR(LDAP_NO_MEMORY);
 246         }
 247
 248         status = ads_schema_path(ads, ctx, &schema_path);
 249         if (!ADS_ERR_OK(status)) {
 250                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 251                 goto done;
 252         }
 253
 254         switch (map_type) {
 255                 case WB_POSIX_MAP_SFU:
 256                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 257                                                            ARRAY_SIZE(oids_sfu),
 258                                                            &oids_out, &names_out, &num_names);
 259                         break;
 260                 case WB_POSIX_MAP_SFU20:
 261                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu20,
 262                                                            ARRAY_SIZE(oids_sfu20),
 263                                                            &oids_out, &names_out, &num_names);
 264                         break;
 265                 case WB_POSIX_MAP_RFC2307:
 266                         status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 267                                                            ARRAY_SIZE(oids_rfc2307),
 268                                                            &oids_out, &names_out, &num_names);
 269                         break;
 270                 default:
 271                         status = ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 272                         break;
 273         }
 274
 275         if (!ADS_ERR_OK(status)) {
 276                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 277                         ads_errstr(status)));
 278                 goto done;
 279         }
 280
 281         for (i=0; i<num_names; i++) {
 282
 283                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 284
 285                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 286                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i]) ||
 287                     strequal(ADS_ATTR_SFU20_UIDNUMBER_OID, oids_out[i])) {
 288                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 289                         continue;
 290                 }
 291
 292                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 293                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i]) ||
 294                     strequal(ADS_ATTR_SFU20_GIDNUMBER_OID, oids_out[i])) {
 295                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 296                         continue;
 297                 }
 298
 299                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 300                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i]) ||
 301                     strequal(ADS_ATTR_SFU20_HOMEDIR_OID, oids_out[i])) {
 302                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 303                         continue;
 304                 }
 305
 306                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 307                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i]) ||
 308                     strequal(ADS_ATTR_SFU20_SHELL_OID, oids_out[i])) {
 309                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 310                         continue;
 311                 }
 312
 313                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 314                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i]) ||
 315                     strequal(ADS_ATTR_SFU20_GECOS_OID, oids_out[i])) {
 316                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 317                 }
 318         }
 319
 320         if (!schema->posix_uidnumber_attr ||
 321             !schema->posix_gidnumber_attr ||
 322             !schema->posix_homedir_attr ||
 323             !schema->posix_shell_attr ||
 324             !schema->posix_gecos_attr) {
 325                 status = ADS_ERROR(LDAP_NO_MEMORY);
 326                 TALLOC_FREE( schema );
 327                 goto done;
 328         }
 329
 330         *s = schema;
 331
 332         status = ADS_ERROR(LDAP_SUCCESS);
 333
 334 done:
 335         TALLOC_FREE(ctx);
 336
 337         return status;
 338 }
 339
 340 #endif