source4/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_context *lctx, 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 = r->in.cldap_port;
  55         search.in.acct_control = -1;
  56         search.in.version = NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX;
  57         search.in.map_response = true;
  58
  59         /* we want to use non async calls, so we're not passing an event context */
  60         status = cldap_socket_init(tmp_ctx, NULL, NULL, NULL, &cldap);//TODO
  61         if (!NT_STATUS_IS_OK(status)) {
  62                 talloc_free(tmp_ctx);
  63                 r->out.error_string = NULL;
  64                 return status;
  65         }
  66         status = cldap_netlogon(cldap, lp_iconv_convenience(lctx->lp_ctx), tmp_ctx, &search);
  67         if (!NT_STATUS_IS_OK(status)
  68             || !search.out.netlogon.data.nt5_ex.client_site) {
  69                 /*
  70                   If cldap_netlogon() returns in error,
  71                   default to using Default-First-Site-Name.
  72                 */
  73                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  74                                                 "Default-First-Site-Name");
  75                 if (!site_name_str) {
  76                         r->out.error_string = NULL;
  77                         talloc_free(tmp_ctx);
  78                         return NT_STATUS_NO_MEMORY;
  79                 }
  80         } else {
  81                 site_name_str = talloc_asprintf(tmp_ctx, "%s",
  82                                         search.out.netlogon.data.nt5_ex.client_site);
  83                 if (!site_name_str) {
  84                         r->out.error_string = NULL;
  85                         talloc_free(tmp_ctx);
  86                         return NT_STATUS_NO_MEMORY;
  87                 }
  88         }
  89
  90         /* Generate the CN=Configuration,... DN. */
  91 /* TODO: look it up! */
  92         config_dn_str = talloc_asprintf(tmp_ctx, "CN=Configuration,%s", r->in.domain_dn_str);
  93         if (!config_dn_str) {
  94                 r->out.error_string = NULL;
  95                 talloc_free(tmp_ctx);
  96                 return NT_STATUS_NO_MEMORY;
  97         }
  98
  99         /* Generate the CN=Servers,... DN. */
 100         server_dn_str = talloc_asprintf(tmp_ctx, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
 101                                                  r->in.netbios_name, site_name_str, config_dn_str);
 102         if (!server_dn_str) {
 103                 r->out.error_string = NULL;
 104                 talloc_free(tmp_ctx);
 105                 return NT_STATUS_NO_MEMORY;
 106         }
 107
 108         r->out.site_name_str = site_name_str;
 109         talloc_steal(r, site_name_str);
 110
 111         r->out.config_dn_str = config_dn_str;
 112         talloc_steal(r, config_dn_str);
 113
 114         r->out.server_dn_str = server_dn_str;
 115         talloc_steal(r, server_dn_str);
 116
 117         talloc_free(tmp_ctx);
 118         return NT_STATUS_OK;
 119 }
 120
 121 /*
 122  * find out Site specific stuff:
 123  * 1. Lookup the Site name.
 124  * 2. Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 125  * TODO: 3.) use DsAddEntry() to create CN=NTDS Settings,CN=<netbios name>,CN=Servers,CN=<site name>,...
 126  */
 127 NTSTATUS libnet_JoinSite(struct libnet_context *ctx,
 128                          struct ldb_context *remote_ldb,
 129                          struct libnet_JoinDomain *libnet_r)
 130 {
 131         NTSTATUS status;
 132         TALLOC_CTX *tmp_ctx;
 133
 134         struct libnet_JoinSite *r;
 135
 136         struct ldb_dn *server_dn;
 137         struct ldb_message *msg;
 138         int rtn;
 139
 140         const char *server_dn_str;
 141         const char *config_dn_str;
 142         struct nbt_name name;
 143         const char *dest_addr = NULL;
 144
 145         tmp_ctx = talloc_named(libnet_r, 0, "libnet_JoinSite temp context");
 146         if (!tmp_ctx) {
 147                 libnet_r->out.error_string = NULL;
 148                 return NT_STATUS_NO_MEMORY;
 149         }
 150
 151         r = talloc(tmp_ctx, struct libnet_JoinSite);
 152         if (!r) {
 153                 libnet_r->out.error_string = NULL;
 154                 talloc_free(tmp_ctx);
 155                 return NT_STATUS_NO_MEMORY;
 156         }
 157
 158         make_nbt_name_client(&name, libnet_r->out.samr_binding->host);
 159         status = resolve_name(lp_resolve_context(ctx->lp_ctx), &name, r, &dest_addr, ctx->event_ctx);
 160         if (!NT_STATUS_IS_OK(status)) {
 161                 libnet_r->out.error_string = NULL;
 162                 talloc_free(tmp_ctx);
 163                 return status;
 164         }
 165
 166         /* Resolve the site name and AD DN's. */
 167         r->in.dest_address = dest_addr;
 168         r->in.netbios_name = libnet_r->in.netbios_name;
 169         r->in.domain_dn_str = libnet_r->out.domain_dn_str;
 170         r->in.cldap_port = lp_cldap_port(ctx->lp_ctx);
 171
 172         status = libnet_FindSite(tmp_ctx, ctx, r);
 173         if (!NT_STATUS_IS_OK(status)) {
 174                 libnet_r->out.error_string =
 175                         talloc_steal(libnet_r, r->out.error_string);
 176                 talloc_free(tmp_ctx);
 177                 return status;
 178         }
 179
 180         config_dn_str = r->out.config_dn_str;
 181         server_dn_str = r->out.server_dn_str;
 182
 183         /*
 184          Add entry CN=<netbios name>,CN=Servers,CN=<site name>,CN=Sites,CN=Configuration,<domain dn>.
 185         */
 186         msg = ldb_msg_new(tmp_ctx);
 187         if (!msg) {
 188                 libnet_r->out.error_string = NULL;
 189                 talloc_free(tmp_ctx);
 190                 return NT_STATUS_NO_MEMORY;
 191         }
 192
 193         rtn = ldb_msg_add_string(msg, "objectClass", "server");
 194         if (rtn != 0) {
 195                 libnet_r->out.error_string = NULL;
 196                 talloc_free(tmp_ctx);
 197                 return NT_STATUS_NO_MEMORY;
 198         }
 199         rtn = ldb_msg_add_string(msg, "systemFlags", "50000000");
 200         if (rtn != 0) {
 201                 libnet_r->out.error_string = NULL;
 202                 talloc_free(tmp_ctx);
 203                 return NT_STATUS_NO_MEMORY;
 204         }
 205         rtn = ldb_msg_add_string(msg, "serverReference", libnet_r->out.account_dn_str);
 206         if (rtn != 0) {
 207                 libnet_r->out.error_string = NULL;
 208                 talloc_free(tmp_ctx);
 209                 return NT_STATUS_NO_MEMORY;
 210         }
 211
 212         server_dn = ldb_dn_new(tmp_ctx, remote_ldb, server_dn_str);
 213         if ( ! ldb_dn_validate(server_dn)) {
 214                 libnet_r->out.error_string = talloc_asprintf(libnet_r,
 215                                         "Invalid server dn: %s",
 216                                         server_dn_str);
 217                 talloc_free(tmp_ctx);
 218                 return NT_STATUS_UNSUCCESSFUL;
 219         }
 220
 221         msg->dn = server_dn;
 222
 223         rtn = ldb_add(remote_ldb, msg);
 224         if (rtn == LDB_ERR_ENTRY_ALREADY_EXISTS) {
 225                 int i;
 226
 227                 /* make a 'modify' msg, and only for serverReference */
 228                 msg = ldb_msg_new(tmp_ctx);
 229                 if (!msg) {
 230                         libnet_r->out.error_string = NULL;
 231                         talloc_free(tmp_ctx);
 232                         return NT_STATUS_NO_MEMORY;
 233                 }
 234                 msg->dn = server_dn;
 235
 236                 rtn = ldb_msg_add_string(msg, "serverReference",libnet_r->out.account_dn_str);
 237                 if (rtn != 0) {
 238                         libnet_r->out.error_string = NULL;
 239                         talloc_free(tmp_ctx);
 240                         return NT_STATUS_NO_MEMORY;
 241                 }
 242
 243                 /* mark all the message elements (should be just one)
 244                    as LDB_FLAG_MOD_REPLACE */
 245                 for (i=0;i<msg->num_elements;i++) {
 246                         msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 247                 }
 248
 249                 rtn = ldb_modify(remote_ldb, msg);
 250                 if (rtn != 0) {
 251                         libnet_r->out.error_string
 252                                 = talloc_asprintf(libnet_r,
 253                                                   "Failed to modify server entry %s: %s: %d",
 254                                                   server_dn_str,
 255                                                   ldb_errstring(remote_ldb), rtn);
 256                         talloc_free(tmp_ctx);
 257                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
 258                 }
 259         } else if (rtn != 0) {
 260                 libnet_r->out.error_string
 261                         = talloc_asprintf(libnet_r,
 262                                 "Failed to add server entry %s: %s: %d",
 263                                 server_dn_str, ldb_errstring(remote_ldb),
 264                                 rtn);
 265                 talloc_free(tmp_ctx);
 266                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 267         }
 268         DEBUG(0, ("We still need to perform a DsAddEntry() so that we can create the CN=NTDS Settings container.\n"));
 269
 270         /* Store the server DN in libnet_r */
 271         libnet_r->out.server_dn_str = server_dn_str;
 272         talloc_steal(libnet_r, server_dn_str);
 273
 274         talloc_free(tmp_ctx);
 275         return NT_STATUS_OK;
 276 }