source: trunk/server/source4/cldap_server/cldap_server.c

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 6.6 KB
Line 
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 <talloc.h>
24#include "lib/messaging/irpc.h"
25#include "smbd/service_task.h"
26#include "smbd/service.h"
27#include "cldap_server/cldap_server.h"
28#include "system/network.h"
29#include "lib/socket/netif.h"
30#include <ldb.h>
31#include <ldb_errors.h>
32#include "dsdb/samdb/samdb.h"
33#include "ldb_wrap.h"
34#include "auth/auth.h"
35#include "param/param.h"
36#include "../lib/tsocket/tsocket.h"
37
38/*
39 handle incoming cldap requests
40*/
41static void cldapd_request_handler(struct cldap_socket *cldap,
42 void *private_data,
43 struct cldap_incoming *in)
44{
45 struct cldapd_server *cldapd = talloc_get_type(private_data,
46 struct cldapd_server);
47 struct ldap_SearchRequest *search;
48
49 if (in->ldap_msg->type != LDAP_TAG_SearchRequest) {
50 DEBUG(0,("Invalid CLDAP request type %d from %s\n",
51 in->ldap_msg->type,
52 tsocket_address_string(in->src, in)));
53 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
54 LDAP_OPERATIONS_ERROR, "Invalid CLDAP request");
55 talloc_free(in);
56 return;
57 }
58
59 search = &in->ldap_msg->r.SearchRequest;
60
61 if (strcmp("", search->basedn) != 0) {
62 DEBUG(0,("Invalid CLDAP basedn '%s' from %s\n",
63 search->basedn,
64 tsocket_address_string(in->src, in)));
65 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
66 LDAP_OPERATIONS_ERROR, "Invalid CLDAP basedn");
67 talloc_free(in);
68 return;
69 }
70
71 if (search->scope != LDAP_SEARCH_SCOPE_BASE) {
72 DEBUG(0,("Invalid CLDAP scope %d from %s\n",
73 search->scope,
74 tsocket_address_string(in->src, in)));
75 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
76 LDAP_OPERATIONS_ERROR, "Invalid CLDAP scope");
77 talloc_free(in);
78 return;
79 }
80
81 if (search->num_attributes == 1 &&
82 strcasecmp(search->attributes[0], "netlogon") == 0) {
83 cldapd_netlogon_request(cldap,
84 cldapd,
85 in,
86 in->ldap_msg->messageid,
87 search->tree,
88 in->src);
89 talloc_free(in);
90 return;
91 }
92
93 cldapd_rootdse_request(cldap, cldapd, in,
94 in->ldap_msg->messageid,
95 search, in->src);
96 talloc_free(in);
97}
98
99
100/*
101 start listening on the given address
102*/
103static NTSTATUS cldapd_add_socket(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
104 const char *address)
105{
106 struct cldap_socket *cldapsock;
107 struct tsocket_address *socket_address;
108 NTSTATUS status;
109 int ret;
110
111 ret = tsocket_address_inet_from_strings(cldapd,
112 "ip",
113 address,
114 lpcfg_cldap_port(lp_ctx),
115 &socket_address);
116 if (ret != 0) {
117 status = map_nt_error_from_unix(errno);
118 DEBUG(0,("invalid address %s:%d - %s:%s\n",
119 address, lpcfg_cldap_port(lp_ctx),
120 gai_strerror(ret), nt_errstr(status)));
121 return status;
122 }
123
124 /* listen for unicasts on the CLDAP port (389) */
125 status = cldap_socket_init(cldapd,
126 cldapd->task->event_ctx,
127 socket_address,
128 NULL,
129 &cldapsock);
130 if (!NT_STATUS_IS_OK(status)) {
131 DEBUG(0,("Failed to bind to %s - %s\n",
132 tsocket_address_string(socket_address, socket_address),
133 nt_errstr(status)));
134 talloc_free(socket_address);
135 return status;
136 }
137 talloc_free(socket_address);
138
139 cldap_set_incoming_handler(cldapsock, cldapd_request_handler, cldapd);
140
141 return NT_STATUS_OK;
142}
143
144/*
145 setup our listening sockets on the configured network interfaces
146*/
147static NTSTATUS cldapd_startup_interfaces(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
148 struct interface *ifaces)
149{
150 int i, num_interfaces;
151 TALLOC_CTX *tmp_ctx = talloc_new(cldapd);
152 NTSTATUS status;
153
154 num_interfaces = iface_count(ifaces);
155
156 /* if we are allowing incoming packets from any address, then
157 we need to bind to the wildcard address */
158 if (!lpcfg_bind_interfaces_only(lp_ctx)) {
159 status = cldapd_add_socket(cldapd, lp_ctx, "0.0.0.0");
160 NT_STATUS_NOT_OK_RETURN(status);
161 }
162
163 /* now we have to also listen on the specific interfaces,
164 so that replies always come from the right IP */
165 for (i=0; i<num_interfaces; i++) {
166 const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
167 status = cldapd_add_socket(cldapd, lp_ctx, address);
168 NT_STATUS_NOT_OK_RETURN(status);
169 }
170
171 talloc_free(tmp_ctx);
172
173 return NT_STATUS_OK;
174}
175
176/*
177 startup the cldapd task
178*/
179static void cldapd_task_init(struct task_server *task)
180{
181 struct cldapd_server *cldapd;
182 NTSTATUS status;
183 struct interface *ifaces;
184
185 load_interfaces(task, lpcfg_interfaces(task->lp_ctx), &ifaces);
186
187 if (iface_count(ifaces) == 0) {
188 task_server_terminate(task, "cldapd: no network interfaces configured", false);
189 return;
190 }
191
192 switch (lpcfg_server_role(task->lp_ctx)) {
193 case ROLE_STANDALONE:
194 task_server_terminate(task, "cldap_server: no CLDAP server required in standalone configuration",
195 false);
196 return;
197 case ROLE_DOMAIN_MEMBER:
198 task_server_terminate(task, "cldap_server: no CLDAP server required in member server configuration",
199 false);
200 return;
201 case ROLE_DOMAIN_CONTROLLER:
202 /* Yes, we want an CLDAP server */
203 break;
204 }
205
206 task_server_set_title(task, "task[cldapd]");
207
208 cldapd = talloc(task, struct cldapd_server);
209 if (cldapd == NULL) {
210 task_server_terminate(task, "cldapd: out of memory", true);
211 return;
212 }
213
214 cldapd->task = task;
215 cldapd->samctx = samdb_connect(cldapd, task->event_ctx, task->lp_ctx, system_session(task->lp_ctx), 0);
216 if (cldapd->samctx == NULL) {
217 task_server_terminate(task, "cldapd failed to open samdb", true);
218 return;
219 }
220
221 /* start listening on the configured network interfaces */
222 status = cldapd_startup_interfaces(cldapd, task->lp_ctx, ifaces);
223 if (!NT_STATUS_IS_OK(status)) {
224 task_server_terminate(task, "cldapd failed to setup interfaces", true);
225 return;
226 }
227
228 irpc_add_name(task->msg_ctx, "cldap_server");
229}
230
231
232/*
233 register ourselves as a available server
234*/
235NTSTATUS server_service_cldapd_init(void)
236{
237 return register_server_service("cldap", cldapd_task_init);
238}
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