source/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 2 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, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.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(expr, "(attributeId=%s)",
  53                                                    OIDs[i])) == NULL) {
  54                         return ADS_ERROR(LDAP_NO_MEMORY);
  55                 }
  56         }
  57
  58         if ((expr = talloc_asprintf_append(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_oid(ADS_STRUCT *ads, const char *schema_path, TALLOC_CTX *mem_ctx, const char * OID)
 111 {
 112         ADS_STATUS rc;
 113         int count = 0;
 114         LDAPMessage *res = NULL;
 115         char *expr = NULL;
 116         const char *attrs[] = { "lDAPDisplayName", NULL };
 117         char *result;
 118
 119         if (ads == NULL || mem_ctx == NULL || OID == NULL) {
 120                 goto failed;
 121         }
 122
 123         expr = talloc_asprintf(mem_ctx, "(attributeId=%s)", OID);
 124         if (expr == NULL) {
 125                 goto failed;
 126         }
 127
 128         rc = ads_do_search_retry(ads, schema_path, LDAP_SCOPE_SUBTREE,
 129                 expr, attrs, &res);
 130         if (!ADS_ERR_OK(rc)) {
 131                 goto failed;
 132         }
 133
 134         count = ads_count_replies(ads, res);
 135         if (count == 0 || !res) {
 136                 goto failed;
 137         }
 138
 139         result = ads_pull_string(ads, mem_ctx, res, "lDAPDisplayName");
 140         ads_msgfree(ads, res);
 141
 142         return result;
 143
 144 failed:
 145         DEBUG(0,("ads_get_attrname_by_oid: failed to retrieve name for oid: %s\n",
 146                 OID));
 147
 148         ads_msgfree(ads, res);
 149         return NULL;
 150 }
 151
 152 /*********************************************************************
 153 *********************************************************************/
 154
 155 static ADS_STATUS ads_schema_path(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx, char **schema_path)
 156 {
 157         ADS_STATUS status;
 158         LDAPMessage *res;
 159         const char *schema;
 160         const char *attrs[] = { "schemaNamingContext", NULL };
 161
 162         status = ads_do_search(ads, "", LDAP_SCOPE_BASE, "(objectclass=*)", attrs, &res);
 163         if (!ADS_ERR_OK(status)) {
 164                 return status;
 165         }
 166
 167         if ( (schema = ads_pull_string(ads, mem_ctx, res, "schemaNamingContext")) == NULL ) {
 168                 ads_msgfree(ads, res);
 169                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 170         }
 171
 172         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 173                 ads_msgfree(ads, res);
 174                 return ADS_ERROR(LDAP_NO_MEMORY);
 175         }
 176
 177         ads_msgfree(ads, res);
 178
 179         return status;
 180 }
 181
 182 /**
 183  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 184  * @param ads connection to ads server
 185  * @param enum mapping type
 186  * @return ADS_STATUS status of search (False if one or more attributes couldn't be
 187  * found in Active Directory)
 188  **/
 189 ADS_STATUS ads_check_posix_schema_mapping(TALLOC_CTX *mem_ctx,
 190                                           ADS_STRUCT *ads,
 191                                           enum wb_posix_mapping map_type,
 192                                           struct posix_schema **s )
 193 {
 194         TALLOC_CTX *ctx = NULL;
 195         ADS_STATUS status;
 196         char **oids_out, **names_out;
 197         size_t num_names;
 198         char *schema_path = NULL;
 199         int i;
 200         struct posix_schema *schema = NULL;
 201
 202         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 203                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 204                                         ADS_ATTR_SFU_HOMEDIR_OID,
 205                                         ADS_ATTR_SFU_SHELL_OID,
 206                                         ADS_ATTR_SFU_GECOS_OID};
 207
 208         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 209                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 210                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 211                                         ADS_ATTR_RFC2307_SHELL_OID,
 212                                         ADS_ATTR_RFC2307_GECOS_OID };
 213
 214         DEBUG(10,("ads_check_posix_schema_mapping\n"));
 215
 216         if ( (ctx = talloc_init("ads_check_posix_schema_mapping")) == NULL ) {
 217                 return ADS_ERROR(LDAP_NO_MEMORY);
 218         }
 219
 220         if ( (schema = TALLOC_P(mem_ctx, struct posix_schema)) == NULL ) {
 221                 TALLOC_FREE( ctx );
 222                 return ADS_ERROR(LDAP_NO_MEMORY);
 223         }
 224
 225         status = ads_schema_path(ads, ctx, &schema_path);
 226         if (!ADS_ERR_OK(status)) {
 227                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 228                 goto done;
 229         }
 230
 231         if (map_type == WB_POSIX_MAP_SFU) {
 232                 status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 233                                                    ARRAY_SIZE(oids_sfu),
 234                                                    &oids_out, &names_out, &num_names);
 235         } else {
 236                 status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_rfc2307,
 237                                                    ARRAY_SIZE(oids_rfc2307),
 238                                                    &oids_out, &names_out, &num_names);
 239         }
 240
 241         if (!ADS_ERR_OK(status)) {
 242                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 243                         ads_errstr(status)));
 244                 goto done;
 245         }
 246
 247         for (i=0; i<num_names; i++) {
 248
 249                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 250
 251                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 252                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i])) {
 253                         schema->posix_uidnumber_attr = talloc_strdup(schema, names_out[i]);
 254                         continue;
 255                 }
 256
 257                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 258                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i])) {
 259                         schema->posix_gidnumber_attr = talloc_strdup(schema, names_out[i]);
 260                         continue;
 261                 }
 262
 263                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 264                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i])) {
 265                         schema->posix_homedir_attr = talloc_strdup(schema, names_out[i]);
 266                         continue;
 267                 }
 268
 269                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 270                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i])) {
 271                         schema->posix_shell_attr = talloc_strdup(schema, names_out[i]);
 272                         continue;
 273                 }
 274
 275                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 276                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i])) {
 277                         schema->posix_gecos_attr = talloc_strdup(schema, names_out[i]);
 278                 }
 279         }
 280
 281         if (!schema->posix_uidnumber_attr ||
 282             !schema->posix_gidnumber_attr ||
 283             !schema->posix_homedir_attr ||
 284             !schema->posix_shell_attr ||
 285             !schema->posix_gecos_attr) {
 286                 status = ADS_ERROR(LDAP_NO_MEMORY);
 287                 TALLOC_FREE( schema );
 288                 goto done;
 289         }
 290
 291         *s = schema;
 292
 293         status = ADS_ERROR(LDAP_SUCCESS);
 294
 295 done:
 296         if (ctx) {
 297                 talloc_destroy(ctx);
 298         }
 299
 300         return status;
 301 }
 302
 303 #endif