327a60c8bb8b268360f4f2dbc82206c6ca15db31
[samba.git] / 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 *user,
37                                      const char *src_address,
38                                      uint32_t version,
39                                      union nbt_cldap_netlogon *netlogon)
40 {
41         struct ldb_context *samctx;
42         const char *attrs[] = {"realm", "dnsDomain", "objectGUID", "name", NULL};
43         struct ldb_message **res;
44         int ret;
45         const char **services = lp_server_services();
46         uint32_t server_type;
47         const char *pdc_name;
48         struct GUID domain_uuid;
49         const char *realm;
50         const char *dns_domain;
51         const char *pdc_dns_name;
52         const char *flatname;
53         const char *site_name;
54         const char *site_name2;
55         const char *pdc_ip;
56
57         samctx = samdb_connect(mem_ctx);
58         if (samctx == NULL) {
59                 DEBUG(2,("Unable to open sam in cldap netlogon reply\n"));
60                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
61         }
62
63         /* the domain has an optional trailing . */
64         if (domain[strlen(domain)-1] == '.') {
65                 domain = talloc_strndup(mem_ctx, domain, strlen(domain)-1);
66         }
67
68         /* try and find the domain */
69         ret = gendb_search(samctx, samctx, NULL, &res, attrs, 
70                            "(&(dnsDomain=%s)(objectClass=domainDNS))", domain);
71         if (ret != 1) {
72                 DEBUG(2,("Unable to find domain '%s' in sam\n", domain));
73                 return NT_STATUS_NO_SUCH_DOMAIN;
74         }
75
76         server_type      = 
77                 NBT_SERVER_PDC | NBT_SERVER_GC | 
78                 NBT_SERVER_DS | NBT_SERVER_TIMESERV |
79                 NBT_SERVER_CLOSEST | NBT_SERVER_WRITABLE | 
80                 NBT_SERVER_GOOD_TIMESERV;
81
82         if (lp_parm_bool(-1, "gensec", "krb5", True)) {
83                 server_type |= NBT_SERVER_KDC;
84         }
85         if (str_list_check(services, "ldap")) {
86                 server_type |= NBT_SERVER_LDAP;
87         }
88
89         pdc_name         = talloc_asprintf(mem_ctx, "\\\\%s", lp_netbios_name());
90         domain_uuid      = samdb_result_guid(res[0], "objectGUID");
91         realm            = samdb_result_string(res[0], "realm", lp_realm());
92         dns_domain       = samdb_result_string(res[0], "dnsDomain", lp_realm());
93         pdc_dns_name     = talloc_asprintf(mem_ctx, "%s.%s", 
94                                            lp_netbios_name(), dns_domain);
95         flatname         = samdb_result_string(res[0], "name", lp_workgroup());
96         site_name        = "Default-First-Site-Name.bludom.tridgell.net";
97         site_name2       = "";
98         pdc_ip           = iface_best_ip(src_address);
99
100         ZERO_STRUCTP(netlogon);
101
102         switch (version & 0xF) {
103         case 0:
104         case 1:
105                 netlogon->logon1.pdc_name    = pdc_name;
106                 netlogon->logon1.unknown     = "";
107                 netlogon->logon1.domain_name = flatname;
108                 netlogon->logon1.nt_version  = 1;
109                 netlogon->logon1.lmnt_token  = 0xFFFF;
110                 netlogon->logon1.lm20_token  = 0xFFFF;
111                 break;
112         case 2:
113         case 3:
114                 netlogon->logon2.pdc_name     = pdc_name;
115                 netlogon->logon2.unknown      = "";
116                 netlogon->logon2.domain_name  = flatname;
117                 netlogon->logon2.domain_uuid  = domain_uuid;
118                 netlogon->logon2.forest       = realm;
119                 netlogon->logon2.dns_domain   = dns_domain;
120                 netlogon->logon2.pdc_dns_name = pdc_dns_name;
121                 netlogon->logon2.pdc_ip       = pdc_ip;
122                 netlogon->logon2.server_type  = server_type;
123                 netlogon->logon2.nt_version   = 3;
124                 netlogon->logon2.lmnt_token   = 0xFFFF;
125                 netlogon->logon2.lm20_token   = 0xFFFF;
126                 break;
127         case 4:
128         case 5:
129         case 6:
130         case 7:
131                 netlogon->logon3.server_type  = server_type;
132                 netlogon->logon3.domain_uuid  = domain_uuid;
133                 netlogon->logon3.forest       = realm;
134                 netlogon->logon3.dns_domain   = dns_domain;
135                 netlogon->logon3.pdc_dns_name = pdc_dns_name;
136                 netlogon->logon3.domain       = flatname;
137                 netlogon->logon3.pdc_name     = pdc_name;
138                 netlogon->logon3.user_name    = user;
139                 netlogon->logon3.site_name    = site_name;
140                 netlogon->logon3.site_name2   = site_name2;
141                 netlogon->logon3.nt_version   = 3;
142                 netlogon->logon3.lmnt_token   = 0xFFFF;
143                 netlogon->logon3.lm20_token   = 0xFFFF;
144                 break;
145         default:
146                 netlogon->logon4.server_type  = server_type;
147                 netlogon->logon4.domain_uuid  = domain_uuid;
148                 netlogon->logon4.forest       = realm;
149                 netlogon->logon4.dns_domain   = dns_domain;
150                 netlogon->logon4.pdc_dns_name = pdc_dns_name;
151                 netlogon->logon4.domain       = flatname;
152                 netlogon->logon4.pdc_name     = lp_netbios_name();
153                 netlogon->logon4.user_name    = user;
154                 netlogon->logon4.site_name    = site_name;
155                 netlogon->logon4.site_name2   = site_name2;
156                 netlogon->logon4.unknown      = 10;
157                 netlogon->logon4.unknown2     = 2;
158                 netlogon->logon4.pdc_ip       = pdc_ip;
159                 netlogon->logon4.nt_version   = 5;
160                 netlogon->logon4.lmnt_token   = 0xFFFF;
161                 netlogon->logon4.lm20_token   = 0xFFFF;
162                 break;
163         }
164
165         return NT_STATUS_OK;
166 }
167
168
169 /*
170   handle incoming cldap requests
171 */
172 void cldapd_netlogon_request(struct cldap_socket *cldap, 
173                              uint32_t message_id,
174                              const char *filter,
175                              const char *src_address, int src_port)
176 {
177         struct ldap_parse_tree *tree;
178         int i;
179         const char *domain = NULL;
180         const char *host = NULL;
181         const char *user = "";
182         int version = -1;
183         union nbt_cldap_netlogon netlogon;
184         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
185
186         TALLOC_CTX *tmp_ctx = talloc_new(cldap);
187
188         DEBUG(0,("cldap filter='%s'\n", filter));
189
190         tree = ldap_parse_filter_string(tmp_ctx, filter);
191         if (tree == NULL) goto failed;
192
193         if (tree->operation != LDAP_OP_AND) goto failed;
194
195         /* extract the query elements */
196         for (i=0;i<tree->u.list.num_elements;i++) {
197                 struct ldap_parse_tree *t = tree->u.list.elements[i];
198                 if (t->operation != LDAP_OP_SIMPLE) goto failed;
199                 if (strcasecmp(t->u.simple.attr, "DnsDomain") == 0) {
200                         domain = talloc_strndup(tmp_ctx, 
201                                                 t->u.simple.value.data,
202                                                 t->u.simple.value.length);
203                 }
204                 if (strcasecmp(t->u.simple.attr, "Host") == 0) {
205                         host = talloc_strndup(tmp_ctx, 
206                                               t->u.simple.value.data,
207                                               t->u.simple.value.length);
208                 }
209                 if (strcasecmp(t->u.simple.attr, "User") == 0) {
210                         user = talloc_strndup(tmp_ctx, 
211                                               t->u.simple.value.data,
212                                               t->u.simple.value.length);
213                 }
214                 if (strcasecmp(t->u.simple.attr, "NtVer") == 0 &&
215                     t->u.simple.value.length == 4) {
216                         version = IVAL(t->u.simple.value.data, 0);
217                 }
218         }
219
220         if (domain == NULL || host == NULL || version == -1) {
221                 goto failed;
222         }
223
224         DEBUG(0,("cldap netlogon query domain=%s host=%s user=%s version=%d\n",
225                  domain, host, user, version));
226
227         status = cldapd_netlogon_fill(cldap, tmp_ctx, domain, user, src_address, 
228                                       version, &netlogon);
229         if (!NT_STATUS_IS_OK(status)) {
230                 goto failed;
231         }
232
233         status = cldap_netlogon_reply(cldap, message_id, src_address, src_port, version,
234                                       &netlogon);
235         if (!NT_STATUS_IS_OK(status)) {
236                 goto failed;
237         }
238
239         talloc_free(tmp_ctx);
240         return;
241         
242 failed:
243         DEBUG(0,("cldap netlogon query failed domain=%s host=%s version=%d - %s\n",
244                  domain, host, version, nt_errstr(status)));
245         talloc_free(tmp_ctx);
246         cldap_empty_reply(cldap, message_id, src_address, src_port);    
247 }