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