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