r6876: - fixed a memory leak in the cldap server
[jelmer/samba4-debian.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 cldapd_server *cldapd,
34                                      TALLOC_CTX *mem_ctx,
35                                      const char *domain,
36                                      const char *domain_guid,
37                                      const char *user,
38                                      const char *src_address,
39                                      uint32_t version,
40                                      union nbt_cldap_netlogon *netlogon)
41 {
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         if (cldapd->samctx == NULL) {
58                 cldapd->samctx = samdb_connect(mem_ctx);
59                 if (cldapd->samctx == NULL) {
60                         DEBUG(2,("Unable to open sam in cldap netlogon reply\n"));
61                         return NT_STATUS_INTERNAL_DB_CORRUPTION;
62                 }
63         }
64
65         /* the domain has an optional trailing . */
66         if (domain && domain[strlen(domain)-1] == '.') {
67                 domain = talloc_strndup(mem_ctx, domain, strlen(domain)-1);
68         }
69
70         /* try and find the domain */
71         ret = gendb_search(cldapd->samctx, mem_ctx, NULL, &res, attrs, 
72                            "(&(objectClass=domainDNS)(|(dnsDomain=%s)(objectGUID=%s)))", 
73                            domain?domain:"", 
74                            domain_guid?domain_guid:"");
75         if (ret != 1) {
76                 DEBUG(2,("Unable to find domain '%s' in sam\n", domain));
77                 return NT_STATUS_NO_SUCH_DOMAIN;
78         }
79
80         server_type      = 
81                 NBT_SERVER_PDC | NBT_SERVER_GC | 
82                 NBT_SERVER_DS | NBT_SERVER_TIMESERV |
83                 NBT_SERVER_CLOSEST | NBT_SERVER_WRITABLE | 
84                 NBT_SERVER_GOOD_TIMESERV;
85
86         if (lp_parm_bool(-1, "gensec", "krb5", True)) {
87                 server_type |= NBT_SERVER_KDC;
88         }
89         if (str_list_check(services, "ldap")) {
90                 server_type |= NBT_SERVER_LDAP;
91         }
92
93         pdc_name         = talloc_asprintf(mem_ctx, "\\\\%s", lp_netbios_name());
94         domain_uuid      = samdb_result_guid(res[0], "objectGUID");
95         realm            = samdb_result_string(res[0], "realm", lp_realm());
96         dns_domain       = samdb_result_string(res[0], "dnsDomain", lp_realm());
97         pdc_dns_name     = talloc_asprintf(mem_ctx, "%s.%s", 
98                                            lp_netbios_name(), dns_domain);
99         flatname         = samdb_result_string(res[0], "name", lp_workgroup());
100         site_name        = "Default-First-Site-Name";
101         site_name2       = "";
102         pdc_ip           = iface_best_ip(src_address);
103
104         ZERO_STRUCTP(netlogon);
105
106         switch (version & 0xF) {
107         case 0:
108         case 1:
109                 netlogon->logon1.pdc_name    = pdc_name;
110                 netlogon->logon1.user_name   = user;
111                 netlogon->logon1.domain_name = flatname;
112                 netlogon->logon1.nt_version  = 1;
113                 netlogon->logon1.lmnt_token  = 0xFFFF;
114                 netlogon->logon1.lm20_token  = 0xFFFF;
115                 break;
116         case 2:
117         case 3:
118                 netlogon->logon2.pdc_name     = pdc_name;
119                 netlogon->logon2.user_name    = user;
120                 netlogon->logon2.domain_name  = flatname;
121                 netlogon->logon2.domain_uuid  = domain_uuid;
122                 netlogon->logon2.forest       = realm;
123                 netlogon->logon2.dns_domain   = dns_domain;
124                 netlogon->logon2.pdc_dns_name = pdc_dns_name;
125                 netlogon->logon2.pdc_ip       = pdc_ip;
126                 netlogon->logon2.server_type  = server_type;
127                 netlogon->logon2.nt_version   = 3;
128                 netlogon->logon2.lmnt_token   = 0xFFFF;
129                 netlogon->logon2.lm20_token   = 0xFFFF;
130                 break;
131         case 4:
132         case 5:
133         case 6:
134         case 7:
135                 netlogon->logon3.server_type  = server_type;
136                 netlogon->logon3.domain_uuid  = domain_uuid;
137                 netlogon->logon3.forest       = realm;
138                 netlogon->logon3.dns_domain   = dns_domain;
139                 netlogon->logon3.pdc_dns_name = pdc_dns_name;
140                 netlogon->logon3.domain       = flatname;
141                 netlogon->logon3.pdc_name     = pdc_name;
142                 netlogon->logon3.user_name    = user;
143                 netlogon->logon3.site_name    = site_name;
144                 netlogon->logon3.site_name2   = site_name2;
145                 netlogon->logon3.nt_version   = 3;
146                 netlogon->logon3.lmnt_token   = 0xFFFF;
147                 netlogon->logon3.lm20_token   = 0xFFFF;
148                 break;
149         default:
150                 netlogon->logon4.server_type  = server_type;
151                 netlogon->logon4.domain_uuid  = domain_uuid;
152                 netlogon->logon4.forest       = realm;
153                 netlogon->logon4.dns_domain   = dns_domain;
154                 netlogon->logon4.pdc_dns_name = pdc_dns_name;
155                 netlogon->logon4.domain       = flatname;
156                 netlogon->logon4.pdc_name     = lp_netbios_name();
157                 netlogon->logon4.user_name    = user;
158                 netlogon->logon4.site_name    = site_name;
159                 netlogon->logon4.site_name2   = site_name2;
160                 netlogon->logon4.unknown      = 10;
161                 netlogon->logon4.unknown2     = 2;
162                 netlogon->logon4.pdc_ip       = pdc_ip;
163                 netlogon->logon4.nt_version   = 5;
164                 netlogon->logon4.lmnt_token   = 0xFFFF;
165                 netlogon->logon4.lm20_token   = 0xFFFF;
166                 break;
167         }
168
169         return NT_STATUS_OK;
170 }
171
172
173 /*
174   handle incoming cldap requests
175 */
176 void cldapd_netlogon_request(struct cldap_socket *cldap, 
177                              uint32_t message_id,
178                              const char *filter,
179                              const char *src_address, int src_port)
180 {
181         struct cldapd_server *cldapd = talloc_get_type(cldap->incoming.private, struct cldapd_server);
182         struct ldap_parse_tree *tree;
183         int i;
184         const char *domain = NULL;
185         const char *host = NULL;
186         const char *user = "";
187         const char *domain_guid = NULL;
188         const char *domain_sid = NULL;
189         int acct_control = -1;
190         int version = -1;
191         union nbt_cldap_netlogon netlogon;
192         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
193
194         TALLOC_CTX *tmp_ctx = talloc_new(cldap);
195
196         DEBUG(5,("cldap filter='%s'\n", filter));
197
198         tree = ldap_parse_filter_string(tmp_ctx, filter);
199         if (tree == NULL) goto failed;
200
201         if (tree->operation != LDAP_OP_AND) goto failed;
202
203         /* extract the query elements */
204         for (i=0;i<tree->u.list.num_elements;i++) {
205                 struct ldap_parse_tree *t = tree->u.list.elements[i];
206                 if (t->operation != LDAP_OP_SIMPLE) goto failed;
207                 if (strcasecmp(t->u.simple.attr, "DnsDomain") == 0) {
208                         domain = talloc_strndup(tmp_ctx, 
209                                                 t->u.simple.value.data,
210                                                 t->u.simple.value.length);
211                 }
212                 if (strcasecmp(t->u.simple.attr, "Host") == 0) {
213                         host = talloc_strndup(tmp_ctx, 
214                                               t->u.simple.value.data,
215                                               t->u.simple.value.length);
216                 }
217                 if (strcasecmp(t->u.simple.attr, "DomainGuid") == 0) {
218                         NTSTATUS enc_status;
219                         struct GUID guid;
220                         enc_status = ldap_decode_ndr_GUID(tmp_ctx, 
221                                                           t->u.simple.value, &guid);
222                         if (NT_STATUS_IS_OK(enc_status)) {
223                                 domain_guid = GUID_string(tmp_ctx, &guid);
224                         }
225                 }
226                 if (strcasecmp(t->u.simple.attr, "DomainSid") == 0) {
227                         domain_sid = talloc_strndup(tmp_ctx, 
228                                                     t->u.simple.value.data,
229                                                     t->u.simple.value.length);
230                 }
231                 if (strcasecmp(t->u.simple.attr, "User") == 0) {
232                         user = talloc_strndup(tmp_ctx, 
233                                               t->u.simple.value.data,
234                                               t->u.simple.value.length);
235                 }
236                 if (strcasecmp(t->u.simple.attr, "NtVer") == 0 &&
237                     t->u.simple.value.length == 4) {
238                         version = IVAL(t->u.simple.value.data, 0);
239                 }
240                 if (strcasecmp(t->u.simple.attr, "AAC") == 0 &&
241                     t->u.simple.value.length == 4) {
242                         acct_control = IVAL(t->u.simple.value.data, 0);
243                 }
244         }
245
246         if (domain_guid == NULL && domain == NULL) {
247                 domain = lp_realm();
248         }
249
250         if (version == -1) {
251                 goto failed;
252         }
253
254         DEBUG(5,("cldap netlogon query domain=%s host=%s user=%s version=%d guid=%s\n",
255                  domain, host, user, version, domain_guid));
256
257         status = cldapd_netlogon_fill(cldapd, tmp_ctx, domain, domain_guid, 
258                                       user, src_address, 
259                                       version, &netlogon);
260         if (!NT_STATUS_IS_OK(status)) {
261                 goto failed;
262         }
263
264         status = cldap_netlogon_reply(cldap, message_id, src_address, src_port, version,
265                                       &netlogon);
266         if (!NT_STATUS_IS_OK(status)) {
267                 goto failed;
268         }
269
270         talloc_free(tmp_ctx);
271         return;
272         
273 failed:
274         DEBUG(0,("cldap netlogon query failed domain=%s host=%s version=%d - %s\n",
275                  domain, host, version, nt_errstr(status)));
276         talloc_free(tmp_ctx);
277         cldap_empty_reply(cldap, message_id, src_address, src_port);    
278 }