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