source/cldap_server/netlogon.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    CLDAP server - netlogon handling
   5
   6    Copyright (C) Andrew Tridgell        2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/ldap/ldap.h"
  25 #include "lib/events/events.h"
  26 #include "lib/socket/socket.h"
  27 #include "smbd/service_task.h"
  28 #include "cldap_server/cldap_server.h"
  29
  30 /*
  31   fill in the cldap netlogon union for a given version
  32 */
  33 static NTSTATUS cldapd_netlogon_fill(struct cldap_socket *cldap,
  34                                      TALLOC_CTX *mem_ctx,
  35                                      const char *domain,
  36                                      const char *src_address,
  37                                      uint32_t version,
  38                                      union nbt_cldap_netlogon *netlogon)
  39 {
  40         struct ldb_context *samctx;
  41         const char *attrs[] = {"realm", "dnsDomain", "objectGUID", "name", NULL};
  42         struct ldb_message **res;
  43         int ret;
  44         const char **services = lp_server_services();
  45         uint32_t server_type;
  46         const char *pdc_name;
  47         struct GUID domain_uuid;
  48         const char *realm;
  49         const char *dns_domain;
  50         const char *pdc_dns_name;
  51         const char *flatname;
  52         const char *site_name;
  53         const char *site_name2;
  54         const char *pdc_ip;
  55
  56         samctx = samdb_connect(mem_ctx);
  57         if (samctx == NULL) {
  58                 DEBUG(2,("Unable to open sam in cldap netlogon reply\n"));
  59                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
  60         }
  61
  62         /* try and find the domain */
  63         ret = gendb_search(samctx, samctx, NULL, &res, attrs,
  64                            "(&(dnsDomain=%s)(objectClass=domainDNS))", domain);
  65         if (ret != 1) {
  66                 DEBUG(2,("Unable to find domain '%s' in sam\n", domain));
  67                 return NT_STATUS_NO_SUCH_DOMAIN;
  68         }
  69
  70         server_type      =
  71                 NBT_SERVER_PDC | NBT_SERVER_GC |
  72                 NBT_SERVER_DS | NBT_SERVER_TIMESERV |
  73                 NBT_SERVER_CLOSEST | NBT_SERVER_WRITABLE |
  74                 NBT_SERVER_GOOD_TIMESERV;
  75
  76         if (lp_parm_bool(-1, "gensec", "krb5", True)) {
  77                 server_type |= NBT_SERVER_KDC;
  78         }
  79         if (str_list_check(services, "ldap")) {
  80                 server_type |= NBT_SERVER_LDAP;
  81         }
  82
  83         pdc_name         = talloc_asprintf(mem_ctx, "\\\\%s", lp_netbios_name());
  84         domain_uuid      = samdb_result_guid(res[0], "objectGUID");
  85         realm            = samdb_result_string(res[0], "realm", lp_realm());
  86         dns_domain       = samdb_result_string(res[0], "dnsDomain", lp_realm());
  87         pdc_dns_name     = talloc_asprintf(mem_ctx, "%s.%s",
  88                                            lp_netbios_name(), dns_domain);
  89         flatname         = samdb_result_string(res[0], "name", lp_workgroup());
  90         site_name        = "Default-First-Site-Name";
  91         site_name2       = "";
  92         pdc_ip           = iface_best_ip(src_address);
  93
  94         ZERO_STRUCTP(netlogon);
  95
  96         switch (version & 0xF) {
  97         case 0:
  98         case 1:
  99                 netlogon->logon1.pdc_name    = pdc_name;
 100                 netlogon->logon1.unknown     = "";
 101                 netlogon->logon1.domain_name = flatname;
 102                 netlogon->logon1.nt_version  = 1;
 103                 netlogon->logon1.lmnt_token  = 0xFFFF;
 104                 netlogon->logon1.lm20_token  = 0xFFFF;
 105                 break;
 106         case 2:
 107         case 3:
 108                 netlogon->logon2.pdc_name     = pdc_name;
 109                 netlogon->logon2.unknown      = "";
 110                 netlogon->logon2.domain_name  = flatname;
 111                 netlogon->logon2.domain_uuid  = domain_uuid;
 112                 netlogon->logon2.forest       = realm;
 113                 netlogon->logon2.dns_domain   = dns_domain;
 114                 netlogon->logon2.pdc_dns_name = pdc_dns_name;
 115                 netlogon->logon2.pdc_ip       = pdc_ip;
 116                 netlogon->logon2.server_type  = server_type;
 117                 netlogon->logon2.nt_version   = 3;
 118                 netlogon->logon2.lmnt_token   = 0xFFFF;
 119                 netlogon->logon2.lm20_token   = 0xFFFF;
 120                 break;
 121         case 4:
 122         case 5:
 123         case 6:
 124         case 7:
 125                 netlogon->logon3.server_type  = server_type;
 126                 netlogon->logon3.domain_uuid  = domain_uuid;
 127                 netlogon->logon3.forest       = realm;
 128                 netlogon->logon3.dns_domain   = dns_domain;
 129                 netlogon->logon3.pdc_dns_name = pdc_dns_name;
 130                 netlogon->logon3.domain       = flatname;
 131                 netlogon->logon3.pdc_name     = pdc_name;
 132                 netlogon->logon3.user_name    = "";
 133                 netlogon->logon3.site_name    = site_name;
 134                 netlogon->logon3.site_name2   = site_name2;
 135                 netlogon->logon3.nt_version   = 3;
 136                 netlogon->logon3.lmnt_token   = 0xFFFF;
 137                 netlogon->logon3.lm20_token   = 0xFFFF;
 138                 break;
 139         default:
 140                 netlogon->logon4.server_type  = server_type;
 141                 netlogon->logon4.domain_uuid  = domain_uuid;
 142                 netlogon->logon4.forest       = realm;
 143                 netlogon->logon4.dns_domain   = dns_domain;
 144                 netlogon->logon4.pdc_dns_name = pdc_dns_name;
 145                 netlogon->logon4.domain       = flatname;
 146                 netlogon->logon4.pdc_name     = lp_netbios_name();
 147                 netlogon->logon4.user_name    = "";
 148                 netlogon->logon4.site_name    = site_name;
 149                 netlogon->logon4.site_name2   = site_name2;
 150                 netlogon->logon4.unknown      = 10;
 151                 netlogon->logon4.unknown2     = 2;
 152                 netlogon->logon4.pdc_ip       = pdc_ip;
 153                 netlogon->logon4.nt_version   = 5;
 154                 netlogon->logon4.lmnt_token   = 0xFFFF;
 155                 netlogon->logon4.lm20_token   = 0xFFFF;
 156                 break;
 157         }
 158
 159         return NT_STATUS_OK;
 160 }
 161
 162
 163 /*
 164   handle incoming cldap requests
 165 */
 166 void cldapd_netlogon_request(struct cldap_socket *cldap,
 167                              uint32_t message_id,
 168                              const char *filter,
 169                              const char *src_address, int src_port)
 170 {
 171         struct ldap_parse_tree *tree;
 172         int i;
 173         const char *domain = NULL;
 174         const char *host = NULL;
 175         int version = -1;
 176         union nbt_cldap_netlogon netlogon;
 177         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
 178
 179         TALLOC_CTX *tmp_ctx = talloc_new(cldap);
 180
 181         tree = ldap_parse_filter_string(tmp_ctx, filter);
 182         if (tree == NULL) goto failed;
 183
 184         if (tree->operation != LDAP_OP_AND) goto failed;
 185
 186         /* extract the query elements */
 187         for (i=0;i<tree->u.list.num_elements;i++) {
 188                 struct ldap_parse_tree *t = tree->u.list.elements[i];
 189                 if (t->operation != LDAP_OP_SIMPLE) goto failed;
 190                 if (strcasecmp(t->u.simple.attr, "DnsDomain") == 0) {
 191                         domain = talloc_strndup(tmp_ctx,
 192                                                 t->u.simple.value.data,
 193                                                 t->u.simple.value.length);
 194                 }
 195                 if (strcasecmp(t->u.simple.attr, "Host") == 0) {
 196                         host = talloc_strndup(tmp_ctx,
 197                                               t->u.simple.value.data,
 198                                               t->u.simple.value.length);
 199                 }
 200                 if (strcasecmp(t->u.simple.attr, "NtVer") == 0 &&
 201                     t->u.simple.value.length == 4) {
 202                         version = IVAL(t->u.simple.value.data, 0);
 203                 }
 204         }
 205
 206         if (domain == NULL || host == NULL || version == -1) {
 207                 goto failed;
 208         }
 209
 210         DEBUG(2,("cldap netlogon query domain=%s host=%s version=%d\n",
 211                  domain, host, version));
 212
 213         status = cldapd_netlogon_fill(cldap, tmp_ctx, domain, src_address,
 214                                       version, &netlogon);
 215         if (!NT_STATUS_IS_OK(status)) {
 216                 goto failed;
 217         }
 218
 219         status = cldap_netlogon_reply(cldap, message_id, src_address, src_port, version,
 220                                       &netlogon);
 221         if (!NT_STATUS_IS_OK(status)) {
 222                 goto failed;
 223         }
 224
 225         talloc_free(tmp_ctx);
 226         return;
 227
 228 failed:
 229         DEBUG(0,("cldap netlogon query failed domain=%s host=%s version=%d - %s\n",
 230                  domain, host, version, nt_errstr(status)));
 231         talloc_free(tmp_ctx);
 232         cldap_empty_reply(cldap, message_id, src_address, src_port);
 233 }