2 Unix SMB/CIFS implementation.
6 Copyright (C) 2010 Kai Blin <kai@samba.org>
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.
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.
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/>.
23 #include "smbd/service_task.h"
24 #include "smbd/service.h"
25 #include "smbd/service_stream.h"
26 #include "smbd/process_model.h"
27 #include "lib/events/events.h"
28 #include "lib/socket/socket.h"
29 #include "lib/tsocket/tsocket.h"
30 #include "libcli/util/tstream.h"
31 #include "libcli/util/ntstatus.h"
32 #include "system/network.h"
33 #include "lib/stream/packet.h"
34 #include "lib/socket/netif.h"
35 #include "dns_server/dns_server.h"
36 #include "param/param.h"
37 #include "librpc/ndr/libndr.h"
38 #include "librpc/gen_ndr/ndr_dns.h"
39 #include "librpc/gen_ndr/ndr_dnsp.h"
41 #include "dsdb/samdb/samdb.h"
42 #include "dsdb/common/util.h"
43 #include "auth/session.h"
44 #include "lib/util/dlinklist.h"
45 #include "lib/util/tevent_werror.h"
46 #include "auth/auth.h"
47 #include "auth/credentials/credentials.h"
49 NTSTATUS
server_service_dns_init(void);
51 /* hold information about one dns socket */
53 struct dns_server
*dns
;
54 struct tsocket_address
*local_address
;
57 struct dns_udp_socket
{
58 struct dns_socket
*dns_socket
;
59 struct tdgram_context
*dgram
;
60 struct tevent_queue
*send_queue
;
64 state of an open tcp connection
66 struct dns_tcp_connection
{
67 /* stream connection we belong to */
68 struct stream_connection
*conn
;
70 /* the dns_server the connection belongs to */
71 struct dns_socket
*dns_socket
;
73 struct tstream_context
*tstream
;
75 struct tevent_queue
*send_queue
;
78 static void dns_tcp_terminate_connection(struct dns_tcp_connection
*dnsconn
, const char *reason
)
80 stream_terminate_connection(dnsconn
->conn
, reason
);
83 static void dns_tcp_recv(struct stream_connection
*conn
, uint16_t flags
)
85 struct dns_tcp_connection
*dnsconn
= talloc_get_type(conn
->private_data
,
86 struct dns_tcp_connection
);
87 /* this should never be triggered! */
88 dns_tcp_terminate_connection(dnsconn
, "dns_tcp_recv: called");
91 static void dns_tcp_send(struct stream_connection
*conn
, uint16_t flags
)
93 struct dns_tcp_connection
*dnsconn
= talloc_get_type(conn
->private_data
,
94 struct dns_tcp_connection
);
95 /* this should never be triggered! */
96 dns_tcp_terminate_connection(dnsconn
, "dns_tcp_send: called");
99 struct dns_process_state
{
101 struct dns_server
*dns
;
102 struct dns_name_packet in_packet
;
103 struct dns_request_state state
;
105 struct dns_name_packet out_packet
;
109 static void dns_process_done(struct tevent_req
*subreq
);
111 static struct tevent_req
*dns_process_send(TALLOC_CTX
*mem_ctx
,
112 struct tevent_context
*ev
,
113 struct dns_server
*dns
,
116 struct tevent_req
*req
, *subreq
;
117 struct dns_process_state
*state
;
118 enum ndr_err_code ndr_err
;
120 const char *forwarder
= lpcfg_dns_forwarder(dns
->task
->lp_ctx
);
121 req
= tevent_req_create(mem_ctx
, &state
, struct dns_process_state
);
129 if (in
->length
< 12) {
130 tevent_req_werror(req
, WERR_INVALID_PARAM
);
131 return tevent_req_post(req
, ev
);
133 dump_data(8, in
->data
, in
->length
);
135 ndr_err
= ndr_pull_struct_blob(
136 in
, state
, &state
->in_packet
,
137 (ndr_pull_flags_fn_t
)ndr_pull_dns_name_packet
);
139 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
140 state
->dns_err
= DNS_RCODE_FORMERR
;
141 tevent_req_done(req
);
142 return tevent_req_post(req
, ev
);
145 NDR_PRINT_DEBUG(dns_name_packet
, &state
->in_packet
);
148 ret
= dns_verify_tsig(dns
, state
, &state
->state
, &state
->in_packet
, in
);
149 if (!W_ERROR_IS_OK(ret
)) {
150 DEBUG(1, ("Failed to verify TSIG!\n"));
151 state
->dns_err
= werr_to_dns_err(ret
);
152 tevent_req_done(req
);
153 return tevent_req_post(req
, ev
);
156 state
->state
.flags
= state
->in_packet
.operation
;
157 state
->state
.flags
|= DNS_FLAG_REPLY
;
160 if (forwarder
&& *forwarder
) {
161 state
->state
.flags
|= DNS_FLAG_RECURSION_AVAIL
;
164 state
->out_packet
= state
->in_packet
;
166 switch (state
->in_packet
.operation
& DNS_OPCODE
) {
167 case DNS_OPCODE_QUERY
:
168 subreq
= dns_server_process_query_send(
169 state
, ev
, dns
, &state
->state
, &state
->in_packet
);
170 if (tevent_req_nomem(subreq
, req
)) {
171 return tevent_req_post(req
, ev
);
173 tevent_req_set_callback(subreq
, dns_process_done
, req
);
175 case DNS_OPCODE_UPDATE
:
176 ret
= dns_server_process_update(
177 dns
, &state
->state
, state
, &state
->in_packet
,
178 &state
->out_packet
.answers
, &state
->out_packet
.ancount
,
179 &state
->out_packet
.nsrecs
, &state
->out_packet
.nscount
,
180 &state
->out_packet
.additional
,
181 &state
->out_packet
.arcount
);
184 ret
= WERR_DNS_ERROR_RCODE_NOT_IMPLEMENTED
;
186 if (!W_ERROR_IS_OK(ret
)) {
187 state
->dns_err
= werr_to_dns_err(ret
);
189 tevent_req_done(req
);
190 return tevent_req_post(req
, ev
);
193 static void dns_process_done(struct tevent_req
*subreq
)
195 struct tevent_req
*req
= tevent_req_callback_data(
196 subreq
, struct tevent_req
);
197 struct dns_process_state
*state
= tevent_req_data(
198 req
, struct dns_process_state
);
201 ret
= dns_server_process_query_recv(
203 &state
->out_packet
.answers
, &state
->out_packet
.ancount
,
204 &state
->out_packet
.nsrecs
, &state
->out_packet
.nscount
,
205 &state
->out_packet
.additional
, &state
->out_packet
.arcount
);
208 if (!W_ERROR_IS_OK(ret
)) {
209 state
->dns_err
= werr_to_dns_err(ret
);
211 tevent_req_done(req
);
214 static WERROR
dns_process_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
217 struct dns_process_state
*state
= tevent_req_data(
218 req
, struct dns_process_state
);
219 enum ndr_err_code ndr_err
;
222 if (tevent_req_is_werror(req
, &ret
)) {
225 if (state
->dns_err
!= DNS_RCODE_OK
) {
228 state
->out_packet
.operation
|= state
->state
.flags
;
230 if (state
->state
.sign
) {
231 ret
= dns_sign_tsig(state
->dns
, mem_ctx
, &state
->state
,
232 &state
->out_packet
, 0);
233 if (!W_ERROR_IS_OK(ret
)) {
234 state
->dns_err
= DNS_RCODE_SERVFAIL
;
239 ndr_err
= ndr_push_struct_blob(
240 out
, mem_ctx
, &state
->out_packet
,
241 (ndr_push_flags_fn_t
)ndr_push_dns_name_packet
);
242 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
243 DEBUG(1, ("Failed to push packet: %s!\n",
244 ndr_errstr(ndr_err
)));
245 state
->dns_err
= DNS_RCODE_SERVFAIL
;
251 *out
= data_blob_talloc(mem_ctx
, state
->in
->data
, state
->in
->length
);
252 if (out
->data
== NULL
) {
255 out
->data
[2] |= 0x80; /* Toggle DNS_FLAG_REPLY */
256 out
->data
[3] |= state
->dns_err
;
260 struct dns_tcp_call
{
261 struct dns_tcp_connection
*dns_conn
;
265 struct iovec out_iov
[2];
268 static void dns_tcp_call_process_done(struct tevent_req
*subreq
);
269 static void dns_tcp_call_writev_done(struct tevent_req
*subreq
);
271 static void dns_tcp_call_loop(struct tevent_req
*subreq
)
273 struct dns_tcp_connection
*dns_conn
= tevent_req_callback_data(subreq
,
274 struct dns_tcp_connection
);
275 struct dns_server
*dns
= dns_conn
->dns_socket
->dns
;
276 struct dns_tcp_call
*call
;
279 call
= talloc(dns_conn
, struct dns_tcp_call
);
281 dns_tcp_terminate_connection(dns_conn
, "dns_tcp_call_loop: "
282 "no memory for dns_tcp_call");
285 call
->dns_conn
= dns_conn
;
287 status
= tstream_read_pdu_blob_recv(subreq
,
291 if (!NT_STATUS_IS_OK(status
)) {
294 reason
= talloc_asprintf(call
, "dns_tcp_call_loop: "
295 "tstream_read_pdu_blob_recv() - %s",
298 reason
= nt_errstr(status
);
301 dns_tcp_terminate_connection(dns_conn
, reason
);
305 DEBUG(10,("Received DNS TCP packet of length %lu from %s\n",
306 (long) call
->in
.length
,
307 tsocket_address_string(dns_conn
->conn
->remote_address
, call
)));
309 /* skip length header */
311 call
->in
.length
-= 2;
313 subreq
= dns_process_send(call
, dns
->task
->event_ctx
, dns
,
315 if (subreq
== NULL
) {
316 dns_tcp_terminate_connection(
317 dns_conn
, "dns_tcp_call_loop: dns_process_send "
321 tevent_req_set_callback(subreq
, dns_tcp_call_process_done
, call
);
324 * The dns tcp pdu's has the length as 2 byte (initial_read_size),
325 * packet_full_request_u16 provides the pdu length then.
327 subreq
= tstream_read_pdu_blob_send(dns_conn
,
328 dns_conn
->conn
->event
.ctx
,
330 2, /* initial_read_size */
331 packet_full_request_u16
,
333 if (subreq
== NULL
) {
334 dns_tcp_terminate_connection(dns_conn
, "dns_tcp_call_loop: "
335 "no memory for tstream_read_pdu_blob_send");
338 tevent_req_set_callback(subreq
, dns_tcp_call_loop
, dns_conn
);
341 static void dns_tcp_call_process_done(struct tevent_req
*subreq
)
343 struct dns_tcp_call
*call
= tevent_req_callback_data(subreq
,
344 struct dns_tcp_call
);
345 struct dns_tcp_connection
*dns_conn
= call
->dns_conn
;
348 err
= dns_process_recv(subreq
, call
, &call
->out
);
350 if (!W_ERROR_IS_OK(err
)) {
351 DEBUG(1, ("dns_process returned %s\n", win_errstr(err
)));
352 dns_tcp_terminate_connection(dns_conn
,
353 "dns_tcp_call_loop: process function failed");
357 /* First add the length of the out buffer */
358 RSSVAL(call
->out_hdr
, 0, call
->out
.length
);
359 call
->out_iov
[0].iov_base
= (char *) call
->out_hdr
;
360 call
->out_iov
[0].iov_len
= 2;
362 call
->out_iov
[1].iov_base
= (char *) call
->out
.data
;
363 call
->out_iov
[1].iov_len
= call
->out
.length
;
365 subreq
= tstream_writev_queue_send(call
,
366 dns_conn
->conn
->event
.ctx
,
368 dns_conn
->send_queue
,
370 if (subreq
== NULL
) {
371 dns_tcp_terminate_connection(dns_conn
, "dns_tcp_call_loop: "
372 "no memory for tstream_writev_queue_send");
375 tevent_req_set_callback(subreq
, dns_tcp_call_writev_done
, call
);
378 static void dns_tcp_call_writev_done(struct tevent_req
*subreq
)
380 struct dns_tcp_call
*call
= tevent_req_callback_data(subreq
,
381 struct dns_tcp_call
);
385 rc
= tstream_writev_queue_recv(subreq
, &sys_errno
);
390 reason
= talloc_asprintf(call
, "dns_tcp_call_writev_done: "
391 "tstream_writev_queue_recv() - %d:%s",
392 sys_errno
, strerror(sys_errno
));
394 reason
= "dns_tcp_call_writev_done: tstream_writev_queue_recv() failed";
397 dns_tcp_terminate_connection(call
->dns_conn
, reason
);
401 /* We don't care about errors */
407 called when we get a new connection
409 static void dns_tcp_accept(struct stream_connection
*conn
)
411 struct dns_socket
*dns_socket
;
412 struct dns_tcp_connection
*dns_conn
;
413 struct tevent_req
*subreq
;
416 dns_conn
= talloc_zero(conn
, struct dns_tcp_connection
);
417 if (dns_conn
== NULL
) {
418 stream_terminate_connection(conn
,
419 "dns_tcp_accept: out of memory");
423 dns_conn
->send_queue
= tevent_queue_create(conn
, "dns_tcp_accept");
424 if (dns_conn
->send_queue
== NULL
) {
425 stream_terminate_connection(conn
,
426 "dns_tcp_accept: out of memory");
430 dns_socket
= talloc_get_type(conn
->private_data
, struct dns_socket
);
432 TALLOC_FREE(conn
->event
.fde
);
434 rc
= tstream_bsd_existing_socket(dns_conn
,
435 socket_get_fd(conn
->socket
),
438 stream_terminate_connection(conn
,
439 "dns_tcp_accept: out of memory");
443 dns_conn
->conn
= conn
;
444 dns_conn
->dns_socket
= dns_socket
;
445 conn
->private_data
= dns_conn
;
448 * The dns tcp pdu's has the length as 2 byte (initial_read_size),
449 * packet_full_request_u16 provides the pdu length then.
451 subreq
= tstream_read_pdu_blob_send(dns_conn
,
452 dns_conn
->conn
->event
.ctx
,
454 2, /* initial_read_size */
455 packet_full_request_u16
,
457 if (subreq
== NULL
) {
458 dns_tcp_terminate_connection(dns_conn
, "dns_tcp_accept: "
459 "no memory for tstream_read_pdu_blob_send");
462 tevent_req_set_callback(subreq
, dns_tcp_call_loop
, dns_conn
);
465 static const struct stream_server_ops dns_tcp_stream_ops
= {
467 .accept_connection
= dns_tcp_accept
,
468 .recv_handler
= dns_tcp_recv
,
469 .send_handler
= dns_tcp_send
472 struct dns_udp_call
{
473 struct dns_udp_socket
*sock
;
474 struct tsocket_address
*src
;
479 static void dns_udp_call_process_done(struct tevent_req
*subreq
);
480 static void dns_udp_call_sendto_done(struct tevent_req
*subreq
);
482 static void dns_udp_call_loop(struct tevent_req
*subreq
)
484 struct dns_udp_socket
*sock
= tevent_req_callback_data(subreq
,
485 struct dns_udp_socket
);
486 struct dns_server
*dns
= sock
->dns_socket
->dns
;
487 struct dns_udp_call
*call
;
492 call
= talloc(sock
, struct dns_udp_call
);
499 len
= tdgram_recvfrom_recv(subreq
, &sys_errno
,
500 call
, &buf
, &call
->src
);
508 call
->in
.length
= len
;
510 DEBUG(10,("Received DNS UDP packet of length %lu from %s\n",
511 (long)call
->in
.length
,
512 tsocket_address_string(call
->src
, call
)));
514 subreq
= dns_process_send(call
, dns
->task
->event_ctx
, dns
,
516 if (subreq
== NULL
) {
520 tevent_req_set_callback(subreq
, dns_udp_call_process_done
, call
);
523 subreq
= tdgram_recvfrom_send(sock
,
524 sock
->dns_socket
->dns
->task
->event_ctx
,
526 if (subreq
== NULL
) {
527 task_server_terminate(sock
->dns_socket
->dns
->task
,
528 "no memory for tdgram_recvfrom_send",
532 tevent_req_set_callback(subreq
, dns_udp_call_loop
, sock
);
535 static void dns_udp_call_process_done(struct tevent_req
*subreq
)
537 struct dns_udp_call
*call
= tevent_req_callback_data(
538 subreq
, struct dns_udp_call
);
539 struct dns_udp_socket
*sock
= call
->sock
;
540 struct dns_server
*dns
= sock
->dns_socket
->dns
;
543 err
= dns_process_recv(subreq
, call
, &call
->out
);
545 if (!W_ERROR_IS_OK(err
)) {
546 DEBUG(1, ("dns_process returned %s\n", win_errstr(err
)));
551 subreq
= tdgram_sendto_queue_send(call
,
552 dns
->task
->event_ctx
,
558 if (subreq
== NULL
) {
562 tevent_req_set_callback(subreq
, dns_udp_call_sendto_done
, call
);
565 static void dns_udp_call_sendto_done(struct tevent_req
*subreq
)
567 struct dns_udp_call
*call
= tevent_req_callback_data(subreq
,
568 struct dns_udp_call
);
572 ret
= tdgram_sendto_queue_recv(subreq
, &sys_errno
);
574 /* We don't care about errors */
580 start listening on the given address
582 static NTSTATUS
dns_add_socket(struct dns_server
*dns
,
583 const struct model_ops
*model_ops
,
588 struct dns_socket
*dns_socket
;
589 struct dns_udp_socket
*dns_udp_socket
;
590 struct tevent_req
*udpsubreq
;
594 dns_socket
= talloc(dns
, struct dns_socket
);
595 NT_STATUS_HAVE_NO_MEMORY(dns_socket
);
597 dns_socket
->dns
= dns
;
599 ret
= tsocket_address_inet_from_strings(dns_socket
, "ip",
601 &dns_socket
->local_address
);
603 status
= map_nt_error_from_unix_common(errno
);
607 status
= stream_setup_socket(dns
->task
,
608 dns
->task
->event_ctx
,
612 "ip", address
, &port
,
613 lpcfg_socket_options(dns
->task
->lp_ctx
),
615 if (!NT_STATUS_IS_OK(status
)) {
616 DEBUG(0,("Failed to bind to %s:%u TCP - %s\n",
617 address
, port
, nt_errstr(status
)));
618 talloc_free(dns_socket
);
622 dns_udp_socket
= talloc(dns_socket
, struct dns_udp_socket
);
623 NT_STATUS_HAVE_NO_MEMORY(dns_udp_socket
);
625 dns_udp_socket
->dns_socket
= dns_socket
;
627 ret
= tdgram_inet_udp_socket(dns_socket
->local_address
,
630 &dns_udp_socket
->dgram
);
632 status
= map_nt_error_from_unix_common(errno
);
633 DEBUG(0,("Failed to bind to %s:%u UDP - %s\n",
634 address
, port
, nt_errstr(status
)));
638 dns_udp_socket
->send_queue
= tevent_queue_create(dns_udp_socket
,
639 "dns_udp_send_queue");
640 NT_STATUS_HAVE_NO_MEMORY(dns_udp_socket
->send_queue
);
642 udpsubreq
= tdgram_recvfrom_send(dns_udp_socket
,
643 dns
->task
->event_ctx
,
644 dns_udp_socket
->dgram
);
645 NT_STATUS_HAVE_NO_MEMORY(udpsubreq
);
646 tevent_req_set_callback(udpsubreq
, dns_udp_call_loop
, dns_udp_socket
);
652 setup our listening sockets on the configured network interfaces
654 static NTSTATUS
dns_startup_interfaces(struct dns_server
*dns
, struct loadparm_context
*lp_ctx
,
655 struct interface
*ifaces
)
657 const struct model_ops
*model_ops
;
659 TALLOC_CTX
*tmp_ctx
= talloc_new(dns
);
663 /* within the dns task we want to be a single process, so
664 ask for the single process model ops and pass these to the
665 stream_setup_socket() call. */
666 model_ops
= process_model_startup("single");
668 DEBUG(0,("Can't find 'single' process model_ops\n"));
669 return NT_STATUS_INTERNAL_ERROR
;
672 if (ifaces
!= NULL
) {
673 num_interfaces
= iface_list_count(ifaces
);
675 for (i
=0; i
<num_interfaces
; i
++) {
676 const char *address
= talloc_strdup(tmp_ctx
,
677 iface_list_n_ip(ifaces
, i
));
679 status
= dns_add_socket(dns
, model_ops
, "dns", address
,
681 NT_STATUS_NOT_OK_RETURN(status
);
685 wcard
= iface_list_wildcard(tmp_ctx
, lp_ctx
);
687 DEBUG(0, ("No wildcard address available\n"));
688 return NT_STATUS_INTERNAL_ERROR
;
690 for (i
= 0; wcard
[i
] != NULL
; i
++) {
691 status
= dns_add_socket(dns
, model_ops
, "dns", wcard
[i
],
693 NT_STATUS_NOT_OK_RETURN(status
);
697 talloc_free(tmp_ctx
);
702 static int dns_server_sort_zones(struct ldb_message
**m1
, struct ldb_message
**m2
)
707 n1
= ldb_msg_find_attr_as_string(*m1
, "name", NULL
);
708 n2
= ldb_msg_find_attr_as_string(*m2
, "name", NULL
);
713 /* If the string lengths are not equal just sort by length */
715 /* If m1 is the larger zone name, return it first */
719 /*TODO: We need to compare DNs here, we want the DomainDNSZones first */
723 static struct dns_server_tkey_store
*tkey_store_init(TALLOC_CTX
*mem_ctx
,
726 struct dns_server_tkey_store
*buffer
= talloc_zero(mem_ctx
,
727 struct dns_server_tkey_store
);
729 if (buffer
== NULL
) {
734 buffer
->next_idx
= 0;
736 buffer
->tkeys
= talloc_zero_array(buffer
, struct dns_server_tkey
*, size
);
737 if (buffer
->tkeys
== NULL
) {
744 static void dns_task_init(struct task_server
*task
)
746 struct dns_server
*dns
;
748 struct interface
*ifaces
= NULL
;
750 struct ldb_result
*res
;
751 static const char * const attrs
[] = { "name", NULL
};
754 switch (lpcfg_server_role(task
->lp_ctx
)) {
755 case ROLE_STANDALONE
:
756 task_server_terminate(task
, "dns: no DNS required in standalone configuration", false);
758 case ROLE_DOMAIN_MEMBER
:
759 task_server_terminate(task
, "dns: no DNS required in member server configuration", false);
761 case ROLE_ACTIVE_DIRECTORY_DC
:
762 /* Yes, we want a DNS */
766 if (lpcfg_interfaces(task
->lp_ctx
) && lpcfg_bind_interfaces_only(task
->lp_ctx
)) {
767 load_interface_list(task
, task
->lp_ctx
, &ifaces
);
769 if (iface_list_count(ifaces
) == 0) {
770 task_server_terminate(task
, "dns: no network interfaces configured", false);
775 task_server_set_title(task
, "task[dns]");
777 dns
= talloc_zero(task
, struct dns_server
);
779 task_server_terminate(task
, "dns: out of memory", true);
785 dns
->server_credentials
= cli_credentials_init(dns
);
786 if (!dns
->server_credentials
) {
787 task_server_terminate(task
, "Failed to init server credentials\n", true);
791 cli_credentials_set_conf(dns
->server_credentials
, task
->lp_ctx
);
792 status
= cli_credentials_set_machine_account(dns
->server_credentials
, task
->lp_ctx
);
793 if (!NT_STATUS_IS_OK(status
)) {
794 task_server_terminate(task
,
795 talloc_asprintf(task
, "Failed to obtain server credentials, perhaps a standalone server?: %s\n",
801 dns
->tkeys
= tkey_store_init(dns
, TKEY_BUFFER_SIZE
);
803 task_server_terminate(task
, "Failed to allocate tkey storage\n", true);
807 dns
->samdb
= samdb_connect(dns
, dns
->task
->event_ctx
, dns
->task
->lp_ctx
,
808 system_session(dns
->task
->lp_ctx
), 0);
810 task_server_terminate(task
, "dns: samdb_connect failed", true);
814 // TODO: this search does not work against windows
815 ret
= dsdb_search(dns
->samdb
, dns
, &res
, NULL
, LDB_SCOPE_SUBTREE
,
816 attrs
, DSDB_SEARCH_SEARCH_ALL_PARTITIONS
, "(objectClass=dnsZone)");
817 if (ret
!= LDB_SUCCESS
) {
818 task_server_terminate(task
,
819 "dns: failed to look up root DNS zones",
824 TYPESAFE_QSORT(res
->msgs
, res
->count
, dns_server_sort_zones
);
826 for (i
=0; i
< res
->count
; i
++) {
827 struct dns_server_zone
*z
;
829 z
= talloc_zero(dns
, struct dns_server_zone
);
831 task_server_terminate(task
, "dns failed to allocate memory", true);
834 z
->name
= ldb_msg_find_attr_as_string(res
->msgs
[i
], "name", NULL
);
835 z
->dn
= talloc_move(z
, &res
->msgs
[i
]->dn
);
837 DLIST_ADD_END(dns
->zones
, z
, NULL
);
840 status
= dns_startup_interfaces(dns
, task
->lp_ctx
, ifaces
);
841 if (!NT_STATUS_IS_OK(status
)) {
842 task_server_terminate(task
, "dns failed to setup interfaces", true);
847 NTSTATUS
server_service_dns_init(void)
849 return register_server_service("dns", dns_task_init
);