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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "libnet/libnet.h"
  22 #include "libcli/cldap/cldap.h"
  23 #include "lib/ldb/include/ldb.h"
  24 #include "lib/ldb/include/ldb_errors.h"
  25 #include "librpc/rpc/dcerpc.h"
  26 #include "libcli/resolve/resolve.h"
  27 #include "param/param.h"
  28
  29 /**
  30  * 1. Setup a CLDAP socket.
  31  * 2. Lookup the default Site-Name.
  32  */
  33 NTSTATUS libnet_FindSite(TALLOC_CTX *ctx, struct libnet_JoinSite *r)
  34 {
  35         NTSTATUS status;
  36         TALLOC_CTX *tmp_ctx;
  37
  38         char *site_name_str;
  39         char *config_dn_str;
  40         char *server_dn_str;
  41
  42         struct cldap_socket *cldap = NULL;
  43         struct cldap_netlogon search;
  44
  45         tmp_ctx = talloc_named(ctx, 0, "libnet_FindSite temp context");
  46         if (!tmp_ctx) {
  47                 r->out.error_string = NULL;
  48                 return NT_STATUS_NO_MEMORY;
  49         }
  50
  51         /* Resolve the site name. */
  52         ZERO_STRUCT(search);
  53         search.in.dest_address = r->in.dest_address;
  54         search.in.dest_port = lp_cldap_port(global_loadparm);
  55         search.in.acct_control = -1;
  56         search.in.version = 6;
  57
  58         cldap = cldap_socket_init(tmp_ctx, NULL);
  59         status = cldap_netlogon(cldap, tmp_ctx, &search);
  60         if (!NT_STATUS_IS_OK(status)) {
  61                 /*
  62                   If cldap_netlogon() returns in error,
  63                   default to using Default-First-Site-Name.
  64                 */
  65                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  66                                                 "Default-First-Site-Name");
  67                 if (!site_name_str) {
  68                         r->out.error_string = NULL;
  69                         talloc_free(tmp_ctx);
  70                         return NT_STATUS_NO_MEMORY;
  71                 }
  72         } else {
  73                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  74                                         search.out.netlogon.logon5.client_site);
  75                 if (!site_name_str) {
  76                         r->out.error_string = NULL;
  77                         talloc_free(tmp_ctx);
  78                         return NT_STATUS_NO_MEMORY;
  79                 }
  80         }
  81
  82         /* Generate the CN=Configuration,... DN. */
  83 /* TODO: look it up! */
  84         config_dn_str = talloc_asprintf(tmp_ctx, "CN=Configuration,%s", r->in.domain_dn_str);
  85         if (!config_dn_str) {
  86                 r->out.error_string = NULL;
  87                 talloc_free(tmp_ctx);
  88                 return NT_STATUS_NO_MEMORY;
  89         }
  90
  91         /* Generate the CN=Servers,... DN. */
  92         server_dn_str = talloc_asprintf(tmp_ctx, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
  93                                                  r->in.netbios_name, site_name_str, config_dn_str);
  94         if (!server_dn_str) {
  95                 r->out.error_string = NULL;
  96                 talloc_free(tmp_ctx);
  97                 return NT_STATUS_NO_MEMORY;
  98         }
  99
 100         r->out.site_name_str = site_name_str;
 101         talloc_steal(r, site_name_str);
 102
 103         r->out.config_dn_str = config_dn_str;
 104         talloc_steal(r, config_dn_str);
 105
 106         r->out.server_dn_str = server_dn_str;
 107         talloc_steal(r, server_dn_str);
 108
 109         talloc_free(tmp_ctx);
 110         return NT_STATUS_OK;
 111 }
 112
 113 /*
 114  * find out Site specific stuff:
 115  * 1. Lookup the Site name.
 116  * 2. Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 117  * TODO: 3.) use DsAddEntry() to create CN=NTDS Settings,CN=<netbios name>,CN=Servers,CN=<site name>,...
 118  */
 119 NTSTATUS libnet_JoinSite(struct ldb_context *remote_ldb,
 120                          struct libnet_JoinDomain *libnet_r)
 121 {
 122         NTSTATUS status;
 123         TALLOC_CTX *tmp_ctx;
 124
 125         struct libnet_JoinSite *r;
 126
 127         struct ldb_dn *server_dn;
 128         struct ldb_message *msg;
 129         int rtn;
 130
 131         const char *server_dn_str;
 132         const char *config_dn_str;
 133         struct nbt_name name;
 134         const char *dest_addr = NULL;
 135
 136         tmp_ctx = talloc_named(libnet_r, 0, "libnet_JoinSite temp context");
 137         if (!tmp_ctx) {
 138                 libnet_r->out.error_string = NULL;
 139                 return NT_STATUS_NO_MEMORY;
 140         }
 141
 142         r = talloc(tmp_ctx, struct libnet_JoinSite);
 143         if (!r) {
 144                 libnet_r->out.error_string = NULL;
 145                 talloc_free(tmp_ctx);
 146                 return NT_STATUS_NO_MEMORY;
 147         }
 148
 149         make_nbt_name_client(&name, libnet_r->out.samr_binding->host);
 150         status = resolve_name(lp_resolve_context(global_loadparm), &name, r, &dest_addr, NULL);
 151         if (!NT_STATUS_IS_OK(status)) {
 152                 libnet_r->out.error_string = NULL;
 153                 talloc_free(tmp_ctx);
 154                 return status;
 155         }
 156
 157         /* Resolve the site name and AD DN's. */
 158         r->in.dest_address = dest_addr;
 159         r->in.netbios_name = libnet_r->in.netbios_name;
 160         r->in.domain_dn_str = libnet_r->out.domain_dn_str;
 161
 162         status = libnet_FindSite(tmp_ctx, r);
 163         if (!NT_STATUS_IS_OK(status)) {
 164                 libnet_r->out.error_string =
 165                         talloc_steal(libnet_r, r->out.error_string);
 166                 talloc_free(tmp_ctx);
 167                 return status;
 168         }
 169
 170         config_dn_str = r->out.config_dn_str;
 171         server_dn_str = r->out.server_dn_str;
 172
 173         /*
 174          Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 175         */
 176         msg = ldb_msg_new(tmp_ctx);
 177         if (!msg) {
 178                 libnet_r->out.error_string = NULL;
 179                 talloc_free(tmp_ctx);
 180                 return NT_STATUS_NO_MEMORY;
 181         }
 182
 183         rtn = ldb_msg_add_string(msg, "objectClass", "server");
 184         if (rtn != 0) {
 185                 libnet_r->out.error_string = NULL;
 186                 talloc_free(tmp_ctx);
 187                 return NT_STATUS_NO_MEMORY;
 188         }
 189         rtn = ldb_msg_add_string(msg, "systemFlags", "50000000");
 190         if (rtn != 0) {
 191                 libnet_r->out.error_string = NULL;
 192                 talloc_free(tmp_ctx);
 193                 return NT_STATUS_NO_MEMORY;
 194         }
 195         rtn = ldb_msg_add_string(msg, "serverReference", libnet_r->out.account_dn_str);
 196         if (rtn != 0) {
 197                 libnet_r->out.error_string = NULL;
 198                 talloc_free(tmp_ctx);
 199                 return NT_STATUS_NO_MEMORY;
 200         }
 201
 202         server_dn = ldb_dn_new(tmp_ctx, remote_ldb, server_dn_str);
 203         if ( ! ldb_dn_validate(server_dn)) {
 204                 libnet_r->out.error_string = talloc_asprintf(libnet_r,
 205                                         "Invalid server dn: %s",
 206                                         server_dn_str);
 207                 talloc_free(tmp_ctx);
 208                 return NT_STATUS_UNSUCCESSFUL;
 209         }
 210
 211         msg->dn = server_dn;
 212
 213         rtn = ldb_add(remote_ldb, msg);
 214         if (rtn == LDB_ERR_ENTRY_ALREADY_EXISTS) {
 215                 int i;
 216
 217                 /* make a 'modify' msg, and only for serverReference */
 218                 msg = ldb_msg_new(tmp_ctx);
 219                 if (!msg) {
 220                         libnet_r->out.error_string = NULL;
 221                         talloc_free(tmp_ctx);
 222                         return NT_STATUS_NO_MEMORY;
 223                 }
 224                 msg->dn = server_dn;
 225
 226                 rtn = ldb_msg_add_string(msg, "serverReference",libnet_r->out.account_dn_str);
 227                 if (rtn != 0) {
 228                         libnet_r->out.error_string = NULL;
 229                         talloc_free(tmp_ctx);
 230                         return NT_STATUS_NO_MEMORY;
 231                 }
 232
 233                 /* mark all the message elements (should be just one)
 234                    as LDB_FLAG_MOD_REPLACE */
 235                 for (i=0;i<msg->num_elements;i++) {
 236                         msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 237                 }
 238
 239                 rtn = ldb_modify(remote_ldb, msg);
 240                 if (rtn != 0) {
 241                         libnet_r->out.error_string
 242                                 = talloc_asprintf(libnet_r,
 243                                                   "Failed to modify server entry %s: %s: %d",
 244                                                   server_dn_str,
 245                                                   ldb_errstring(remote_ldb), rtn);
 246                         talloc_free(tmp_ctx);
 247                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 248                 }
 249         } else if (rtn != 0) {
 250                 libnet_r->out.error_string
 251                         = talloc_asprintf(libnet_r,
 252                                 "Failed to add server entry %s: %s: %d",
 253                                 server_dn_str, ldb_errstring(remote_ldb),
 254                                 rtn);
 255                 talloc_free(tmp_ctx);
 256                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 257         }
 258         DEBUG(0, ("We still need to perform a DsAddEntry() so that we can create the CN=NTDS Settings container.\n"));
 259
 260         /* Store the server DN in libnet_r */
 261         libnet_r->out.server_dn_str = server_dn_str;
 262         talloc_steal(libnet_r, server_dn_str);
 263
 264         talloc_free(tmp_ctx);
 265         return NT_STATUS_OK;
 266 }