net_dns: Make "lwinet ads dns register" honor the "interfaces" parameter.
[ira/wip.git] / source4 / cldap_server / cldap_server.c
1 /* 
2    Unix SMB/CIFS implementation.
3
4    CLDAP server task
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 3 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, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "libcli/ldap/ldap.h"
24 #include "lib/socket/socket.h"
25 #include "lib/messaging/irpc.h"
26 #include "smbd/service_task.h"
27 #include "smbd/service.h"
28 #include "cldap_server/cldap_server.h"
29 #include "system/network.h"
30 #include "lib/socket/netif.h"
31 #include "lib/ldb/include/ldb.h"
32 #include "lib/ldb/include/ldb_errors.h"
33 #include "dsdb/samdb/samdb.h"
34 #include "ldb_wrap.h"
35 #include "auth/auth.h"
36 #include "param/param.h"
37
38 /*
39   handle incoming cldap requests
40 */
41 static void cldapd_request_handler(struct cldap_socket *cldap, 
42                                    struct ldap_message *ldap_msg, 
43                                    struct socket_address *src)
44 {
45         struct ldap_SearchRequest *search;
46         if (ldap_msg->type != LDAP_TAG_SearchRequest) {
47                 DEBUG(0,("Invalid CLDAP request type %d from %s:%d\n", 
48                          ldap_msg->type, src->addr, src->port));
49                 cldap_error_reply(cldap, ldap_msg->messageid, src,
50                                   LDAP_OPERATIONS_ERROR, "Invalid CLDAP request");
51                 return;
52         }
53
54         search = &ldap_msg->r.SearchRequest;
55
56         if (strcmp("", search->basedn) != 0) {
57                 DEBUG(0,("Invalid CLDAP basedn '%s' from %s:%d\n", 
58                          search->basedn, src->addr, src->port));
59                 cldap_error_reply(cldap, ldap_msg->messageid, src,
60                                   LDAP_OPERATIONS_ERROR, "Invalid CLDAP basedn");
61                 return;
62         }
63
64         if (search->scope != LDAP_SEARCH_SCOPE_BASE) {
65                 DEBUG(0,("Invalid CLDAP scope %d from %s:%d\n", 
66                          search->scope, src->addr, src->port));
67                 cldap_error_reply(cldap, ldap_msg->messageid, src,
68                                   LDAP_OPERATIONS_ERROR, "Invalid CLDAP scope");
69                 return;
70         }
71
72         if (search->num_attributes == 1 &&
73             strcasecmp(search->attributes[0], "netlogon") == 0) {
74                 cldapd_netlogon_request(cldap, ldap_msg->messageid,
75                                         search->tree, src);
76                 return;
77         }
78
79         cldapd_rootdse_request(cldap, ldap_msg->messageid,
80                                search, src);
81 }
82
83
84 /*
85   start listening on the given address
86 */
87 static NTSTATUS cldapd_add_socket(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
88                                   const char *address)
89 {
90         struct cldap_socket *cldapsock;
91         struct socket_address *socket_address;
92         NTSTATUS status;
93
94         /* listen for unicasts on the CLDAP port (389) */
95         cldapsock = cldap_socket_init(cldapd, cldapd->task->event_ctx, lp_iconv_convenience(cldapd->task->lp_ctx));
96         NT_STATUS_HAVE_NO_MEMORY(cldapsock);
97
98         socket_address = socket_address_from_strings(cldapsock, cldapsock->sock->backend_name, 
99                                                      address, lp_cldap_port(lp_ctx));
100         if (!socket_address) {
101                 talloc_free(cldapsock);
102                 return NT_STATUS_NO_MEMORY;
103         }
104
105         status = socket_listen(cldapsock->sock, socket_address, 0, 0);
106         if (!NT_STATUS_IS_OK(status)) {
107                 DEBUG(0,("Failed to bind to %s:%d - %s\n", 
108                          address, lp_cldap_port(lp_ctx), nt_errstr(status)));
109                 talloc_free(cldapsock);
110                 return status;
111         }
112
113         talloc_free(socket_address);
114
115         cldap_set_incoming_handler(cldapsock, cldapd_request_handler, cldapd);
116
117         return NT_STATUS_OK;
118 }
119
120
121 /*
122   setup our listening sockets on the configured network interfaces
123 */
124 static NTSTATUS cldapd_startup_interfaces(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
125                                           struct interface *ifaces)
126 {
127         int num_interfaces;
128         TALLOC_CTX *tmp_ctx = talloc_new(cldapd);
129         NTSTATUS status;
130
131         num_interfaces = iface_count(ifaces);
132
133         /* if we are allowing incoming packets from any address, then
134            we need to bind to the wildcard address */
135         if (!lp_bind_interfaces_only(lp_ctx)) {
136                 status = cldapd_add_socket(cldapd, lp_ctx, "0.0.0.0");
137                 NT_STATUS_NOT_OK_RETURN(status);
138         } else {
139                 int i;
140
141                 for (i=0; i<num_interfaces; i++) {
142                         const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
143                         status = cldapd_add_socket(cldapd, lp_ctx, address);
144                         NT_STATUS_NOT_OK_RETURN(status);
145                 }
146         }
147
148         talloc_free(tmp_ctx);
149
150         return NT_STATUS_OK;
151 }
152
153 /*
154   startup the cldapd task
155 */
156 static void cldapd_task_init(struct task_server *task)
157 {
158         struct cldapd_server *cldapd;
159         NTSTATUS status;
160         struct interface *ifaces;
161         
162         load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
163
164         if (iface_count(ifaces) == 0) {
165                 task_server_terminate(task, "cldapd: no network interfaces configured");
166                 return;
167         }
168
169         switch (lp_server_role(task->lp_ctx)) {
170         case ROLE_STANDALONE:
171                 task_server_terminate(task, "cldap_server: no CLDAP server required in standalone configuration");
172                 return;
173         case ROLE_DOMAIN_MEMBER:
174                 task_server_terminate(task, "cldap_server: no CLDAP server required in member server configuration");
175                 return;
176         case ROLE_DOMAIN_CONTROLLER:
177                 /* Yes, we want an CLDAP server */
178                 break;
179         }
180
181         task_server_set_title(task, "task[cldapd]");
182
183         cldapd = talloc(task, struct cldapd_server);
184         if (cldapd == NULL) {
185                 task_server_terminate(task, "cldapd: out of memory");
186                 return;
187         }
188
189         cldapd->task = task;
190         cldapd->samctx = samdb_connect(cldapd, task->event_ctx, task->lp_ctx, system_session(cldapd, task->lp_ctx));
191         if (cldapd->samctx == NULL) {
192                 task_server_terminate(task, "cldapd failed to open samdb");
193                 return;
194         }
195
196         /* start listening on the configured network interfaces */
197         status = cldapd_startup_interfaces(cldapd, task->lp_ctx, ifaces);
198         if (!NT_STATUS_IS_OK(status)) {
199                 task_server_terminate(task, "cldapd failed to setup interfaces");
200                 return;
201         }
202
203         irpc_add_name(task->msg_ctx, "cldap_server");
204 }
205
206
207 /*
208   register ourselves as a available server
209 */
210 NTSTATUS server_service_cldapd_init(void)
211 {
212         return register_server_service("cldap", cldapd_task_init);
213 }