source/libnet/libnet_site.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Brad Henry     2005
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22 #include "libnet/libnet.h"
  23 #include "libcli/cldap/cldap.h"
  24 #include "lib/ldb/include/ldb.h"
  25 #include "lib/ldb/include/ldb_errors.h"
  26 #include "librpc/rpc/dcerpc.h"
  27
  28 /*
  29  * 1. Setup a CLDAP socket.
  30  * 2. Lookup the default Site-Name.
  31  */
  32 NTSTATUS libnet_FindSite(TALLOC_CTX *ctx, struct libnet_JoinSite *r)
  33 {
  34         NTSTATUS status;
  35         TALLOC_CTX *tmp_ctx;
  36
  37         char *site_name_str;
  38         char *config_dn_str;
  39         char *server_dn_str;
  40
  41         struct cldap_socket *cldap = NULL;
  42         struct cldap_netlogon search;
  43
  44         tmp_ctx = talloc_named(ctx, 0, "libnet_FindSite temp context");
  45         if (!tmp_ctx) {
  46                 r->out.error_string = NULL;
  47                 return NT_STATUS_NO_MEMORY;
  48         }
  49
  50         /* Resolve the site name. */
  51         ZERO_STRUCT(search);
  52         search.in.dest_address = r->in.dest_address;
  53         search.in.acct_control = -1;
  54         search.in.version = 6;
  55
  56         cldap = cldap_socket_init(tmp_ctx, NULL);
  57         status = cldap_netlogon(cldap, tmp_ctx, &search);
  58         if (!NT_STATUS_IS_OK(status)) {
  59                 /*
  60                   If cldap_netlogon() returns in error,
  61                   default to using Default-First-Site-Name.
  62                 */
  63                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  64                                                 "Default-First-Site-Name");
  65                 if (!site_name_str) {
  66                         r->out.error_string = NULL;
  67                         talloc_free(tmp_ctx);
  68                         return NT_STATUS_NO_MEMORY;
  69                 }
  70         } else {
  71                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  72                                         search.out.netlogon.logon5.client_site);
  73                 if (!site_name_str) {
  74                         r->out.error_string = NULL;
  75                         talloc_free(tmp_ctx);
  76                         return NT_STATUS_NO_MEMORY;
  77                 }
  78         }
  79
  80         /* Generate the CN=Configuration,... DN. */
  81 /* TODO: look it up! */
  82         config_dn_str = talloc_asprintf(tmp_ctx, "CN=Configuration,%s", r->in.domain_dn_str);
  83         if (!config_dn_str) {
  84                 r->out.error_string = NULL;
  85                 talloc_free(tmp_ctx);
  86                 return NT_STATUS_NO_MEMORY;
  87         }
  88
  89         /* Generate the CN=Servers,... DN. */
  90         server_dn_str = talloc_asprintf(tmp_ctx, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
  91                                                  r->in.netbios_name, site_name_str, config_dn_str);
  92         if (!server_dn_str) {
  93                 r->out.error_string = NULL;
  94                 talloc_free(tmp_ctx);
  95                 return NT_STATUS_NO_MEMORY;
  96         }
  97
  98         r->out.site_name_str = site_name_str;
  99         talloc_steal(r, site_name_str);
 100
 101         r->out.config_dn_str = config_dn_str;
 102         talloc_steal(r, config_dn_str);
 103
 104         r->out.server_dn_str = server_dn_str;
 105         talloc_steal(r, server_dn_str);
 106
 107         talloc_free(tmp_ctx);
 108         return NT_STATUS_OK;
 109 }
 110
 111 /*
 112  * find out Site specific stuff:
 113  * 1. Lookup the Site name.
 114  * 2. Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 115  * TODO: 3.) use DsAddEntry() to create CN=NTDS Settings,CN=<netbios name>,CN=Servers,CN=<site name>,...
 116  */
 117 NTSTATUS libnet_JoinSite(struct ldb_context *remote_ldb,
 118                          struct libnet_JoinDomain *libnet_r)
 119 {
 120         NTSTATUS status;
 121         TALLOC_CTX *tmp_ctx;
 122
 123         struct libnet_JoinSite *r;
 124
 125         struct ldb_dn *server_dn;
 126         struct ldb_message *msg;
 127         int rtn;
 128
 129         const char *server_dn_str;
 130         const char *config_dn_str;
 131
 132         tmp_ctx = talloc_named(libnet_r, 0, "libnet_JoinSite temp context");
 133         if (!tmp_ctx) {
 134                 libnet_r->out.error_string = NULL;
 135                 return NT_STATUS_NO_MEMORY;
 136         }
 137
 138         r = talloc(tmp_ctx, struct libnet_JoinSite);
 139         if (!r) {
 140                 libnet_r->out.error_string = NULL;
 141                 talloc_free(tmp_ctx);
 142                 return NT_STATUS_NO_MEMORY;
 143         }
 144
 145         /* Resolve the site name and AD DN's. */
 146         r->in.dest_address = libnet_r->out.samr_binding->host;
 147         r->in.netbios_name = libnet_r->in.netbios_name;
 148         r->in.domain_dn_str = libnet_r->out.domain_dn_str;
 149
 150         status = libnet_FindSite(tmp_ctx, r);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 libnet_r->out.error_string =
 153                         talloc_steal(libnet_r, r->out.error_string);
 154                 talloc_free(tmp_ctx);
 155                 return NT_STATUS_NO_MEMORY;
 156         }
 157
 158         config_dn_str = r->out.config_dn_str;
 159         server_dn_str = r->out.server_dn_str;
 160
 161         /*
 162          Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 163         */
 164         msg = ldb_msg_new(tmp_ctx);
 165         if (!msg) {
 166                 libnet_r->out.error_string = NULL;
 167                 talloc_free(tmp_ctx);
 168                 return NT_STATUS_NO_MEMORY;
 169         }
 170
 171         rtn = ldb_msg_add_string(msg, "objectClass", "server");
 172         if (rtn != 0) {
 173                 libnet_r->out.error_string = NULL;
 174                 talloc_free(tmp_ctx);
 175                 return NT_STATUS_NO_MEMORY;
 176         }
 177         rtn = ldb_msg_add_string(msg, "systemFlags", "50000000");
 178         if (rtn != 0) {
 179                 libnet_r->out.error_string = NULL;
 180                 talloc_free(tmp_ctx);
 181                 return NT_STATUS_NO_MEMORY;
 182         }
 183         rtn = ldb_msg_add_string(msg, "serverReference", libnet_r->out.account_dn_str);
 184         if (rtn != 0) {
 185                 libnet_r->out.error_string = NULL;
 186                 talloc_free(tmp_ctx);
 187                 return NT_STATUS_NO_MEMORY;
 188         }
 189
 190         server_dn = ldb_dn_new(tmp_ctx, remote_ldb, server_dn_str);
 191         if ( ! ldb_dn_validate(server_dn)) {
 192                 libnet_r->out.error_string = talloc_asprintf(libnet_r,
 193                                         "Invalid server dn: %s",
 194                                         server_dn_str);
 195                 talloc_free(tmp_ctx);
 196                 return NT_STATUS_UNSUCCESSFUL;
 197         }
 198
 199         msg->dn = server_dn;
 200
 201         rtn = ldb_add(remote_ldb, msg);
 202         if (rtn == LDB_ERR_ENTRY_ALREADY_EXISTS) {
 203                 int i;
 204
 205                 /* make a 'modify' msg, and only for serverReference */
 206                 msg = ldb_msg_new(tmp_ctx);
 207                 if (!msg) {
 208                         libnet_r->out.error_string = NULL;
 209                         talloc_free(tmp_ctx);
 210                         return NT_STATUS_NO_MEMORY;
 211                 }
 212                 msg->dn = server_dn;
 213
 214                 rtn = ldb_msg_add_string(msg, "serverReference",libnet_r->out.account_dn_str);
 215                 if (rtn != 0) {
 216                         libnet_r->out.error_string = NULL;
 217                         talloc_free(tmp_ctx);
 218                         return NT_STATUS_NO_MEMORY;
 219                 }
 220
 221                 /* mark all the message elements (should be just one)
 222                    as LDB_FLAG_MOD_REPLACE */
 223                 for (i=0;i<msg->num_elements;i++) {
 224                         msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 225                 }
 226
 227                 rtn = ldb_modify(remote_ldb, msg);
 228                 if (rtn != 0) {
 229                         libnet_r->out.error_string
 230                                 = talloc_asprintf(libnet_r,
 231                                                   "Failed to modify server entry %s: %s: %d",
 232                                                   server_dn_str,
 233                                                   ldb_errstring(remote_ldb), rtn);
 234                         talloc_free(tmp_ctx);
 235                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 236                 }
 237         } else if (rtn != 0) {
 238                 libnet_r->out.error_string
 239                         = talloc_asprintf(libnet_r,
 240                                 "Failed to add server entry %s: %s: %d",
 241                                 server_dn_str, ldb_errstring(remote_ldb),
 242                                 rtn);
 243                 talloc_free(tmp_ctx);
 244                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 245         }
 246         DEBUG(0, ("We still need to perform a DsAddEntry() so that we can create the CN=NTDS Settings container.\n"));
 247
 248         /* Store the server DN in libnet_r */
 249         libnet_r->out.server_dn_str = server_dn_str;
 250         talloc_steal(libnet_r, server_dn_str);
 251
 252         talloc_free(tmp_ctx);
 253         return NT_STATUS_OK;
 254 }