source4/cldap_server/rootdse.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    CLDAP server - rootdse handling
   5
   6    Copyright (C) Stefan Metzmacher      2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/ldap/ldap.h"
  25 #include "lib/ldb/include/ldb.h"
  26 #include "lib/ldb/include/ldb_errors.h"
  27 #include "lib/events/events.h"
  28 #include "lib/socket/socket.h"
  29 #include "smbd/service_task.h"
  30 #include "cldap_server/cldap_server.h"
  31 #include "librpc/gen_ndr/ndr_misc.h"
  32 #include "dsdb/samdb/samdb.h"
  33 #include "auth/auth.h"
  34 #include "db_wrap.h"
  35 #include "system/network.h"
  36 #include "lib/socket/netif.h"
  37
  38 static void cldapd_rootdse_fill(struct cldapd_server *cldapd,
  39                                 TALLOC_CTX *mem_ctx,
  40                                 struct ldap_SearchRequest *search,
  41                                 struct ldap_SearchResEntry **response,
  42                                 struct ldap_Result *result)
  43 {
  44         struct ldap_SearchResEntry *ent = NULL;
  45         struct ldb_dn *basedn;
  46         struct ldb_result *res = NULL;
  47         struct ldb_request *lreq;
  48         enum ldb_scope scope = LDB_SCOPE_DEFAULT;
  49         const char **attrs = NULL;
  50         const char *errstr = NULL;
  51         int ret = 0;
  52         int ldb_ret = -1;
  53
  54         basedn = ldb_dn_new(mem_ctx, cldapd->samctx, NULL);
  55         if (basedn == NULL) goto nomem;
  56         scope = LDB_SCOPE_BASE;
  57
  58         if (search->num_attributes >= 1) {
  59                 int i;
  60
  61                 attrs = talloc_array(mem_ctx, const char *, search->num_attributes+1);
  62                 if (attrs == NULL) goto nomem;
  63
  64                 for (i=0; i < search->num_attributes; i++) {
  65                         attrs[i] = search->attributes[i];
  66                 }
  67                 attrs[i] = NULL;
  68         }
  69
  70         lreq = talloc(mem_ctx, struct ldb_request);
  71         if (lreq == NULL) goto nomem;
  72
  73         res = talloc_zero(mem_ctx, struct ldb_result);
  74         if (res == NULL) goto nomem;
  75
  76         lreq->operation = LDB_SEARCH;
  77         lreq->op.search.base = basedn;
  78         lreq->op.search.scope = scope;
  79         lreq->op.search.tree = search->tree;
  80         lreq->op.search.attrs = attrs;
  81
  82         lreq->controls = NULL;
  83
  84         lreq->context = res;
  85         lreq->callback = ldb_search_default_callback;
  86
  87         /* Copy the timeout from the incoming call */
  88         ldb_set_timeout(cldapd->samctx, lreq, search->timelimit);
  89
  90         ldb_ret = ldb_request(cldapd->samctx, lreq);
  91         if (ldb_ret != LDB_SUCCESS) {
  92                 goto reply;
  93         }
  94
  95         ldb_ret = ldb_wait(lreq->handle, LDB_WAIT_ALL);
  96         if (ldb_ret != LDB_SUCCESS) {
  97                 goto reply;
  98         }
  99
 100         if (res->count > 1) {
 101                 errstr = "Internal error: to much replies";
 102                 ldb_ret = LDB_ERR_OTHER;
 103                 goto reply;
 104         } else if (res->count == 1) {
 105                 int j;
 106
 107                 ent = talloc(mem_ctx, struct ldap_SearchResEntry);
 108                 if (ent == NULL) goto nomem;
 109
 110                 ent->dn = ldb_dn_alloc_linearized(ent, res->msgs[0]->dn);
 111                 if (ent->dn == NULL) goto nomem;
 112                 ent->num_attributes = 0;
 113                 ent->attributes = NULL;
 114                 if (res->msgs[0]->num_elements == 0) {
 115                         goto reply;
 116                 }
 117                 ent->num_attributes = res->msgs[0]->num_elements;
 118                 ent->attributes = talloc_array(ent, struct ldb_message_element, ent->num_attributes);
 119                 if (ent->attributes == NULL) goto nomem;
 120                 for (j=0; j < ent->num_attributes; j++) {
 121                         ent->attributes[j].name = talloc_steal(ent->attributes, res->msgs[0]->elements[j].name);
 122                         ent->attributes[j].num_values = 0;
 123                         ent->attributes[j].values = NULL;
 124                         if (search->attributesonly && (res->msgs[0]->elements[j].num_values == 0)) {
 125                                 continue;
 126                         }
 127                         ent->attributes[j].num_values = res->msgs[0]->elements[j].num_values;
 128                         ent->attributes[j].values = res->msgs[0]->elements[j].values;
 129                         talloc_steal(ent->attributes, res->msgs[0]->elements[j].values);
 130                 }
 131         }
 132
 133 reply:
 134         if (ret) {
 135                 /* nothing ... */
 136         } else if (ldb_ret == LDB_SUCCESS) {
 137                 ret = LDAP_SUCCESS;
 138                 errstr = NULL;
 139         } else {
 140                 ret = ldb_ret;
 141                 errstr = ldb_errstring(cldapd->samctx);
 142         }
 143         goto done;
 144 nomem:
 145         talloc_free(ent);
 146         ret = LDAP_OPERATIONS_ERROR;
 147         errstr = "No memory";
 148 done:
 149         *response = ent;
 150         result->resultcode = ret;
 151         result->errormessage = (errstr?talloc_strdup(mem_ctx, errstr):NULL);
 152 }
 153
 154 /*
 155   handle incoming cldap requests
 156 */
 157 void cldapd_rootdse_request(struct cldap_socket *cldap,
 158                             uint32_t message_id,
 159                             struct ldap_SearchRequest *search,
 160                             struct socket_address *src)
 161 {
 162         struct cldapd_server *cldapd = talloc_get_type(cldap->incoming.private, struct cldapd_server);
 163         NTSTATUS status;
 164         struct cldap_reply reply;
 165         struct ldap_Result result;
 166         TALLOC_CTX *tmp_ctx = talloc_new(cldap);
 167
 168         ZERO_STRUCT(result);
 169
 170         reply.messageid         = message_id;
 171         reply.dest              = src;
 172         reply.response          = NULL;
 173         reply.result            = &result;
 174
 175         cldapd_rootdse_fill(cldapd, tmp_ctx, search, &reply.response, reply.result);
 176
 177         status = cldap_reply_send(cldap, &reply);
 178         if (!NT_STATUS_IS_OK(status)) {
 179                 DEBUG(2,("cldap rootdse query failed '%s' - %s\n",
 180                          ldb_filter_from_tree(tmp_ctx, search->tree), nt_errstr(status)));
 181         }
 182
 183         talloc_free(tmp_ctx);
 184         return;
 185 }