source: branches/samba-3.5.x/source4/cldap_server/cldap_server.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 6.5 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 "libcli/ldap/ldap.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#include "../lib/tsocket/tsocket.h"
38
39/*
40 handle incoming cldap requests
41*/
42static void cldapd_request_handler(struct cldap_socket *cldap,
43 void *private_data,
44 struct cldap_incoming *in)
45{
46 struct cldapd_server *cldapd = talloc_get_type(private_data,
47 struct cldapd_server);
48 struct ldap_SearchRequest *search;
49
50 if (in->ldap_msg->type != LDAP_TAG_SearchRequest) {
51 DEBUG(0,("Invalid CLDAP request type %d from %s\n",
52 in->ldap_msg->type,
53 tsocket_address_string(in->src, in)));
54 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
55 LDAP_OPERATIONS_ERROR, "Invalid CLDAP request");
56 talloc_free(in);
57 return;
58 }
59
60 search = &in->ldap_msg->r.SearchRequest;
61
62 if (strcmp("", search->basedn) != 0) {
63 DEBUG(0,("Invalid CLDAP basedn '%s' from %s\n",
64 search->basedn,
65 tsocket_address_string(in->src, in)));
66 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
67 LDAP_OPERATIONS_ERROR, "Invalid CLDAP basedn");
68 talloc_free(in);
69 return;
70 }
71
72 if (search->scope != LDAP_SEARCH_SCOPE_BASE) {
73 DEBUG(0,("Invalid CLDAP scope %d from %s\n",
74 search->scope,
75 tsocket_address_string(in->src, in)));
76 cldap_error_reply(cldap, in->ldap_msg->messageid, in->src,
77 LDAP_OPERATIONS_ERROR, "Invalid CLDAP scope");
78 talloc_free(in);
79 return;
80 }
81
82 if (search->num_attributes == 1 &&
83 strcasecmp(search->attributes[0], "netlogon") == 0) {
84 cldapd_netlogon_request(cldap,
85 cldapd,
86 in,
87 in->ldap_msg->messageid,
88 search->tree,
89 in->src);
90 talloc_free(in);
91 return;
92 }
93
94 cldapd_rootdse_request(cldap, cldapd, in,
95 in->ldap_msg->messageid,
96 search, in->src);
97 talloc_free(in);
98}
99
100
101/*
102 start listening on the given address
103*/
104static NTSTATUS cldapd_add_socket(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
105 const char *address)
106{
107 struct cldap_socket *cldapsock;
108 struct tsocket_address *socket_address;
109 NTSTATUS status;
110 int ret;
111
112 ret = tsocket_address_inet_from_strings(cldapd,
113 "ip",
114 address,
115 lp_cldap_port(lp_ctx),
116 &socket_address);
117 if (ret != 0) {
118 status = map_nt_error_from_unix(errno);
119 DEBUG(0,("invalid address %s:%d - %s:%s\n",
120 address, lp_cldap_port(lp_ctx),
121 gai_strerror(ret), nt_errstr(status)));
122 return status;
123 }
124
125 /* listen for unicasts on the CLDAP port (389) */
126 status = cldap_socket_init(cldapd,
127 cldapd->task->event_ctx,
128 socket_address,
129 NULL,
130 &cldapsock);
131 if (!NT_STATUS_IS_OK(status)) {
132 DEBUG(0,("Failed to bind to %s - %s\n",
133 tsocket_address_string(socket_address, socket_address),
134 nt_errstr(status)));
135 talloc_free(socket_address);
136 return status;
137 }
138 talloc_free(socket_address);
139
140 cldap_set_incoming_handler(cldapsock, cldapd_request_handler, cldapd);
141
142 return NT_STATUS_OK;
143}
144
145/*
146 setup our listening sockets on the configured network interfaces
147*/
148static NTSTATUS cldapd_startup_interfaces(struct cldapd_server *cldapd, struct loadparm_context *lp_ctx,
149 struct interface *ifaces)
150{
151 int num_interfaces;
152 TALLOC_CTX *tmp_ctx = talloc_new(cldapd);
153 NTSTATUS status;
154 int i;
155
156 num_interfaces = iface_count(ifaces);
157
158 /* if we are allowing incoming packets from any address, then
159 we need to bind to the wildcard address */
160 if (!lp_bind_interfaces_only(lp_ctx)) {
161 status = cldapd_add_socket(cldapd, lp_ctx, "0.0.0.0");
162 NT_STATUS_NOT_OK_RETURN(status);
163 }
164
165 /* now we have to also listen on the specific interfaces,
166 so that replies always come from the right IP */
167 for (i=0; i<num_interfaces; i++) {
168 const char *address = talloc_strdup(tmp_ctx, iface_n_ip(ifaces, i));
169 status = cldapd_add_socket(cldapd, lp_ctx, address);
170 NT_STATUS_NOT_OK_RETURN(status);
171 }
172
173 talloc_free(tmp_ctx);
174
175 return NT_STATUS_OK;
176}
177
178/*
179 startup the cldapd task
180*/
181static void cldapd_task_init(struct task_server *task)
182{
183 struct cldapd_server *cldapd;
184 NTSTATUS status;
185 struct interface *ifaces;
186
187 load_interfaces(task, lp_interfaces(task->lp_ctx), &ifaces);
188
189 if (iface_count(ifaces) == 0) {
190 task_server_terminate(task, "cldapd: no network interfaces configured", false);
191 return;
192 }
193
194 switch (lp_server_role(task->lp_ctx)) {
195 case ROLE_STANDALONE:
196 task_server_terminate(task, "cldap_server: no CLDAP server required in standalone configuration",
197 false);
198 return;
199 case ROLE_DOMAIN_MEMBER:
200 task_server_terminate(task, "cldap_server: no CLDAP server required in member server configuration",
201 false);
202 return;
203 case ROLE_DOMAIN_CONTROLLER:
204 /* Yes, we want an CLDAP server */
205 break;
206 }
207
208 task_server_set_title(task, "task[cldapd]");
209
210 cldapd = talloc(task, struct cldapd_server);
211 if (cldapd == NULL) {
212 task_server_terminate(task, "cldapd: out of memory", true);
213 return;
214 }
215
216 cldapd->task = task;
217 cldapd->samctx = samdb_connect(cldapd, task->event_ctx, task->lp_ctx, system_session(cldapd, task->lp_ctx));
218 if (cldapd->samctx == NULL) {
219 task_server_terminate(task, "cldapd failed to open samdb", true);
220 return;
221 }
222
223 /* start listening on the configured network interfaces */
224 status = cldapd_startup_interfaces(cldapd, task->lp_ctx, ifaces);
225 if (!NT_STATUS_IS_OK(status)) {
226 task_server_terminate(task, "cldapd failed to setup interfaces", true);
227 return;
228 }
229
230 irpc_add_name(task->msg_ctx, "cldap_server");
231}
232
233
234/*
235 register ourselves as a available server
236*/
237NTSTATUS server_service_cldapd_init(void)
238{
239 return register_server_service("cldap", cldapd_task_init);
240}
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