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         void *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         void *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         void *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                 return ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
 169         }
 170
 171         if ( (*schema_path = talloc_strdup(mem_ctx, schema)) == NULL ) {
 172                 return ADS_ERROR(LDAP_NO_MEMORY);
 173         }
 174
 175         ads_msgfree(ads, res);
 176
 177         return status;
 178 }
 179
 180 /**
 181  * Check for "Services for Unix" or rfc2307 Schema and load some attributes into the ADS_STRUCT
 182  * @param ads connection to ads server
 183  * @param enum mapping type
 184  * @return BOOL status of search (False if one or more attributes couldn't be
 185  * found in Active Directory)
 186  **/
 187 ADS_STATUS ads_check_posix_schema_mapping(ADS_STRUCT *ads, enum wb_posix_mapping map_type)
 188 {
 189         TALLOC_CTX *ctx = NULL;
 190         ADS_STATUS status;
 191         char **oids_out, **names_out;
 192         size_t num_names;
 193         char *schema_path = NULL;
 194         ADS_STRUCT *ads_s = ads;
 195         int i;
 196
 197         const char *oids_sfu[] = {      ADS_ATTR_SFU_UIDNUMBER_OID,
 198                                         ADS_ATTR_SFU_GIDNUMBER_OID,
 199                                         ADS_ATTR_SFU_HOMEDIR_OID,
 200                                         ADS_ATTR_SFU_SHELL_OID,
 201                                         ADS_ATTR_SFU_GECOS_OID};
 202
 203         const char *oids_rfc2307[] = {  ADS_ATTR_RFC2307_UIDNUMBER_OID,
 204                                         ADS_ATTR_RFC2307_GIDNUMBER_OID,
 205                                         ADS_ATTR_RFC2307_HOMEDIR_OID,
 206                                         ADS_ATTR_RFC2307_SHELL_OID,
 207                                         ADS_ATTR_RFC2307_GECOS_OID };
 208
 209         DEBUG(10,("ads_check_posix_schema_mapping\n"));
 210
 211         switch (map_type) {
 212
 213                 case WB_POSIX_MAP_TEMPLATE:
 214                 case WB_POSIX_MAP_UNIXINFO:
 215                         DEBUG(10,("ads_check_posix_schema_mapping: nothing to do\n"));
 216                         return ADS_ERROR(LDAP_SUCCESS);
 217
 218                 case WB_POSIX_MAP_SFU:
 219                 case WB_POSIX_MAP_RFC2307:
 220                         break;
 221
 222                 default:
 223                         DEBUG(0,("ads_check_posix_schema_mapping: "
 224                                  "unknown enum %d\n", map_type));
 225                         return ADS_ERROR(LDAP_PARAM_ERROR);
 226         }
 227
 228         ads->schema.posix_uidnumber_attr = NULL;
 229         ads->schema.posix_gidnumber_attr = NULL;
 230         ads->schema.posix_homedir_attr = NULL;
 231         ads->schema.posix_shell_attr = NULL;
 232         ads->schema.posix_gecos_attr = NULL;
 233
 234         ctx = talloc_init("ads_check_posix_schema_mapping");
 235         if (ctx == NULL) {
 236                 return ADS_ERROR(LDAP_NO_MEMORY);
 237         }
 238
 239         /* establish a new ldap tcp session if necessary */
 240
 241         if (!ads->ld) {
 242                 if ((ads_s = ads_init(ads->server.realm, ads->server.workgroup,
 243                                       ads->server.ldap_server)) == NULL) {
 244                         status = ADS_ERROR(LDAP_SERVER_DOWN);
 245                         goto done;
 246                 }
 247
 248                 ads_s->auth.flags = ADS_AUTH_ANON_BIND;
 249                 status = ads_connect(ads_s);
 250                 if (!ADS_ERR_OK(status)) {
 251                         goto done;
 252                 }
 253         }
 254
 255         status = ads_schema_path(ads, ctx, &schema_path);
 256         if (!ADS_ERR_OK(status)) {
 257                 DEBUG(3,("ads_check_posix_mapping: Unable to retrieve schema DN!\n"));
 258                 goto done;
 259         }
 260
 261         if (map_type == WB_POSIX_MAP_SFU) {
 262                 status = ads_get_attrnames_by_oids(ads, ctx, schema_path, oids_sfu,
 263                                                    ARRAY_SIZE(oids_sfu),
 264                                                    &oids_out, &names_out, &num_names);
 265         } else {
 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         }
 270
 271         if (!ADS_ERR_OK(status)) {
 272                 DEBUG(3,("ads_check_posix_schema_mapping: failed %s\n",
 273                         ads_errstr(status)));
 274                 goto done;
 275         }
 276
 277         DEBUG(10,("ads_check_posix_schema_mapping: query succeeded, identified: %s\n",
 278                 wb_posix_map_str(map_type)));
 279
 280         for (i=0; i<num_names; i++) {
 281
 282                 DEBUGADD(10,("\tOID %s has name: %s\n", oids_out[i], names_out[i]));
 283
 284                 if (strequal(ADS_ATTR_RFC2307_UIDNUMBER_OID, oids_out[i]) ||
 285                     strequal(ADS_ATTR_SFU_UIDNUMBER_OID, oids_out[i])) {
 286                         SAFE_FREE(ads->schema.posix_uidnumber_attr);
 287                         ads->schema.posix_uidnumber_attr = SMB_STRDUP(names_out[i]);
 288                 }
 289                 if (strequal(ADS_ATTR_RFC2307_GIDNUMBER_OID, oids_out[i]) ||
 290                     strequal(ADS_ATTR_SFU_GIDNUMBER_OID, oids_out[i])) {
 291                         SAFE_FREE(ads->schema.posix_gidnumber_attr);
 292                         ads->schema.posix_gidnumber_attr = SMB_STRDUP(names_out[i]);
 293                 }
 294                 if (strequal(ADS_ATTR_RFC2307_HOMEDIR_OID, oids_out[i]) ||
 295                     strequal(ADS_ATTR_SFU_HOMEDIR_OID, oids_out[i])) {
 296                         SAFE_FREE(ads->schema.posix_homedir_attr);
 297                         ads->schema.posix_homedir_attr = SMB_STRDUP(names_out[i]);
 298                 }
 299                 if (strequal(ADS_ATTR_RFC2307_SHELL_OID, oids_out[i]) ||
 300                     strequal(ADS_ATTR_SFU_SHELL_OID, oids_out[i])) {
 301                         SAFE_FREE(ads->schema.posix_shell_attr);
 302                         ads->schema.posix_shell_attr = SMB_STRDUP(names_out[i]);
 303                 }
 304                 if (strequal(ADS_ATTR_RFC2307_GECOS_OID, oids_out[i]) ||
 305                     strequal(ADS_ATTR_SFU_GECOS_OID, oids_out[i])) {
 306                         SAFE_FREE(ads->schema.posix_gecos_attr);
 307                         ads->schema.posix_gecos_attr = SMB_STRDUP(names_out[i]);
 308                 }
 309         }
 310
 311         if (!ads->schema.posix_uidnumber_attr ||
 312             !ads->schema.posix_gidnumber_attr ||
 313             !ads->schema.posix_homedir_attr ||
 314             !ads->schema.posix_shell_attr ||
 315             !ads->schema.posix_gecos_attr) {
 316                 status = ADS_ERROR(LDAP_NO_MEMORY);
 317                 goto done;
 318         }
 319
 320         status = ADS_ERROR(LDAP_SUCCESS);
 321
 322         ads->schema.map_type = map_type;
 323 done:
 324         /* free any temporary ads connections */
 325         if (ads_s != ads) {
 326                 ads_destroy(&ads_s);
 327         }
 328         if (ctx) {
 329                 talloc_destroy(ctx);
 330         }
 331
 332         return status;
 333 }
 334
 335 #endif