1 /* dnstap support for Unbound */
2
3 /*
4 * Copyright (c) 2013-2014, Farsight Security, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of the copyright holder nor the names of its
19 * contributors may be used to endorse or promote products derived from
20 * this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include "dnstap/dnstap_config.h"
36
37 #ifdef USE_DNSTAP
38
39 #include "config.h"
40 #include <string.h>
41 #include <sys/time.h>
42 #ifdef HAVE_SYS_STAT_H
43 #include <sys/stat.h>
44 #endif
45 #include <errno.h>
46 #include "sldns/sbuffer.h"
47 #include "util/config_file.h"
48 #include "util/net_help.h"
49 #include "util/netevent.h"
50 #include "util/log.h"
51
52 #include <protobuf-c/protobuf-c.h>
53
54 #include "dnstap/dnstap.h"
55 #include "dnstap/dtstream.h"
56 #include "dnstap/dnstap.pb-c.h"
57
58 #define DNSTAP_INITIAL_BUF_SIZE 256
59
60 struct dt_msg {
61 void *buf;
62 size_t len_buf;
63 Dnstap__Dnstap d;
64 Dnstap__Message m;
65 };
66
67 static int
dt_pack(const Dnstap__Dnstap * d,void ** buf,size_t * sz)68 dt_pack(const Dnstap__Dnstap *d, void **buf, size_t *sz)
69 {
70 ProtobufCBufferSimple sbuf;
71
72 memset(&sbuf, 0, sizeof(sbuf));
73 sbuf.base.append = protobuf_c_buffer_simple_append;
74 sbuf.len = 0;
75 sbuf.alloced = DNSTAP_INITIAL_BUF_SIZE;
76 sbuf.data = malloc(sbuf.alloced);
77 if (sbuf.data == NULL)
78 return 0;
79 sbuf.must_free_data = 1;
80
81 *sz = dnstap__dnstap__pack_to_buffer(d, (ProtobufCBuffer *) &sbuf);
82 if (sbuf.data == NULL)
83 return 0;
84 *buf = sbuf.data;
85
86 return 1;
87 }
88
89 static void
dt_send(const struct dt_env * env,void * buf,size_t len_buf)90 dt_send(const struct dt_env *env, void *buf, size_t len_buf)
91 {
92 dt_msg_queue_submit(env->msgqueue, buf, len_buf);
93 }
94
95 static void
dt_msg_init(const struct dt_env * env,struct dt_msg * dm,Dnstap__Message__Type mtype)96 dt_msg_init(const struct dt_env *env,
97 struct dt_msg *dm,
98 Dnstap__Message__Type mtype)
99 {
100 memset(dm, 0, sizeof(*dm));
101 dm->d.base.descriptor = &dnstap__dnstap__descriptor;
102 dm->m.base.descriptor = &dnstap__message__descriptor;
103 dm->d.type = DNSTAP__DNSTAP__TYPE__MESSAGE;
104 dm->d.message = &dm->m;
105 dm->m.type = mtype;
106 if (env->identity != NULL) {
107 dm->d.identity.data = (uint8_t *) env->identity;
108 dm->d.identity.len = (size_t) env->len_identity;
109 dm->d.has_identity = 1;
110 }
111 if (env->version != NULL) {
112 dm->d.version.data = (uint8_t *) env->version;
113 dm->d.version.len = (size_t) env->len_version;
114 dm->d.has_version = 1;
115 }
116 }
117
118 /* check that the socket file can be opened and exists, print error if not */
119 static void
check_socket_file(const char * socket_path)120 check_socket_file(const char* socket_path)
121 {
122 struct stat statbuf;
123 memset(&statbuf, 0, sizeof(statbuf));
124 if(stat(socket_path, &statbuf) < 0) {
125 log_warn("could not open dnstap-socket-path: %s, %s",
126 socket_path, strerror(errno));
127 }
128 }
129
130 struct dt_env *
dt_create(struct config_file * cfg)131 dt_create(struct config_file* cfg)
132 {
133 struct dt_env *env;
134
135 if(cfg->dnstap && cfg->dnstap_socket_path && cfg->dnstap_socket_path[0] &&
136 (cfg->dnstap_ip==NULL || cfg->dnstap_ip[0]==0)) {
137 char* p = cfg->dnstap_socket_path;
138 if(cfg->chrootdir && cfg->chrootdir[0] && strncmp(p,
139 cfg->chrootdir, strlen(cfg->chrootdir)) == 0)
140 p += strlen(cfg->chrootdir);
141 verbose(VERB_OPS, "attempting to connect to dnstap socket %s",
142 p);
143 check_socket_file(p);
144 }
145
146 env = (struct dt_env *) calloc(1, sizeof(struct dt_env));
147 if (!env)
148 return NULL;
149
150 env->dtio = dt_io_thread_create();
151 if(!env->dtio) {
152 log_err("malloc failure");
153 free(env);
154 return NULL;
155 }
156 if(!dt_io_thread_apply_cfg(env->dtio, cfg)) {
157 dt_io_thread_delete(env->dtio);
158 free(env);
159 return NULL;
160 }
161 dt_apply_cfg(env, cfg);
162 return env;
163 }
164
165 static void
dt_apply_identity(struct dt_env * env,struct config_file * cfg)166 dt_apply_identity(struct dt_env *env, struct config_file *cfg)
167 {
168 char buf[MAXHOSTNAMELEN+1];
169 if (!cfg->dnstap_send_identity)
170 return;
171 free(env->identity);
172 if (cfg->dnstap_identity == NULL || cfg->dnstap_identity[0] == 0) {
173 if (gethostname(buf, MAXHOSTNAMELEN) == 0) {
174 buf[MAXHOSTNAMELEN] = 0;
175 env->identity = strdup(buf);
176 } else {
177 fatal_exit("dt_apply_identity: gethostname() failed");
178 }
179 } else {
180 env->identity = strdup(cfg->dnstap_identity);
181 }
182 if (env->identity == NULL)
183 fatal_exit("dt_apply_identity: strdup() failed");
184 env->len_identity = (unsigned int)strlen(env->identity);
185 verbose(VERB_OPS, "dnstap identity field set to \"%s\"",
186 env->identity);
187 }
188
189 static void
dt_apply_version(struct dt_env * env,struct config_file * cfg)190 dt_apply_version(struct dt_env *env, struct config_file *cfg)
191 {
192 if (!cfg->dnstap_send_version)
193 return;
194 free(env->version);
195 if (cfg->dnstap_version == NULL || cfg->dnstap_version[0] == 0)
196 env->version = strdup(PACKAGE_STRING);
197 else
198 env->version = strdup(cfg->dnstap_version);
199 if (env->version == NULL)
200 fatal_exit("dt_apply_version: strdup() failed");
201 env->len_version = (unsigned int)strlen(env->version);
202 verbose(VERB_OPS, "dnstap version field set to \"%s\"",
203 env->version);
204 }
205
206 void
dt_apply_cfg(struct dt_env * env,struct config_file * cfg)207 dt_apply_cfg(struct dt_env *env, struct config_file *cfg)
208 {
209 if (!cfg->dnstap)
210 return;
211
212 dt_apply_identity(env, cfg);
213 dt_apply_version(env, cfg);
214 if ((env->log_resolver_query_messages = (unsigned int)
215 cfg->dnstap_log_resolver_query_messages))
216 {
217 verbose(VERB_OPS, "dnstap Message/RESOLVER_QUERY enabled");
218 }
219 if ((env->log_resolver_response_messages = (unsigned int)
220 cfg->dnstap_log_resolver_response_messages))
221 {
222 verbose(VERB_OPS, "dnstap Message/RESOLVER_RESPONSE enabled");
223 }
224 if ((env->log_client_query_messages = (unsigned int)
225 cfg->dnstap_log_client_query_messages))
226 {
227 verbose(VERB_OPS, "dnstap Message/CLIENT_QUERY enabled");
228 }
229 if ((env->log_client_response_messages = (unsigned int)
230 cfg->dnstap_log_client_response_messages))
231 {
232 verbose(VERB_OPS, "dnstap Message/CLIENT_RESPONSE enabled");
233 }
234 if ((env->log_forwarder_query_messages = (unsigned int)
235 cfg->dnstap_log_forwarder_query_messages))
236 {
237 verbose(VERB_OPS, "dnstap Message/FORWARDER_QUERY enabled");
238 }
239 if ((env->log_forwarder_response_messages = (unsigned int)
240 cfg->dnstap_log_forwarder_response_messages))
241 {
242 verbose(VERB_OPS, "dnstap Message/FORWARDER_RESPONSE enabled");
243 }
244 }
245
246 int
dt_init(struct dt_env * env,struct comm_base * base)247 dt_init(struct dt_env *env, struct comm_base* base)
248 {
249 env->msgqueue = dt_msg_queue_create(base);
250 if(!env->msgqueue) {
251 log_err("malloc failure");
252 return 0;
253 }
254 if(!dt_io_thread_register_queue(env->dtio, env->msgqueue)) {
255 log_err("malloc failure");
256 dt_msg_queue_delete(env->msgqueue);
257 env->msgqueue = NULL;
258 return 0;
259 }
260 return 1;
261 }
262
263 void
dt_deinit(struct dt_env * env)264 dt_deinit(struct dt_env* env)
265 {
266 dt_io_thread_unregister_queue(env->dtio, env->msgqueue);
267 dt_msg_queue_delete(env->msgqueue);
268 }
269
270 void
dt_delete(struct dt_env * env)271 dt_delete(struct dt_env *env)
272 {
273 if (!env)
274 return;
275 dt_io_thread_delete(env->dtio);
276 free(env->identity);
277 free(env->version);
278 free(env);
279 }
280
281 static void
dt_fill_timeval(const struct timeval * tv,uint64_t * time_sec,protobuf_c_boolean * has_time_sec,uint32_t * time_nsec,protobuf_c_boolean * has_time_nsec)282 dt_fill_timeval(const struct timeval *tv,
283 uint64_t *time_sec, protobuf_c_boolean *has_time_sec,
284 uint32_t *time_nsec, protobuf_c_boolean *has_time_nsec)
285 {
286 #ifndef S_SPLINT_S
287 *time_sec = tv->tv_sec;
288 *time_nsec = tv->tv_usec * 1000;
289 #endif
290 *has_time_sec = 1;
291 *has_time_nsec = 1;
292 }
293
294 static void
dt_fill_buffer(sldns_buffer * b,ProtobufCBinaryData * p,protobuf_c_boolean * has)295 dt_fill_buffer(sldns_buffer *b, ProtobufCBinaryData *p, protobuf_c_boolean *has)
296 {
297 log_assert(b != NULL);
298 p->len = sldns_buffer_limit(b);
299 p->data = sldns_buffer_begin(b);
300 *has = 1;
301 }
302
303 static void
dt_msg_fill_net(struct dt_msg * dm,struct sockaddr_storage * qs,struct sockaddr_storage * rs,enum comm_point_type cptype,ProtobufCBinaryData * qaddr,protobuf_c_boolean * has_qaddr,uint32_t * qport,protobuf_c_boolean * has_qport,ProtobufCBinaryData * raddr,protobuf_c_boolean * has_raddr,uint32_t * rport,protobuf_c_boolean * has_rport)304 dt_msg_fill_net(struct dt_msg *dm,
305 struct sockaddr_storage *qs,
306 struct sockaddr_storage *rs,
307 enum comm_point_type cptype,
308 ProtobufCBinaryData *qaddr, protobuf_c_boolean *has_qaddr,
309 uint32_t *qport, protobuf_c_boolean *has_qport,
310 ProtobufCBinaryData *raddr, protobuf_c_boolean *has_raddr,
311 uint32_t *rport, protobuf_c_boolean *has_rport)
312 {
313 log_assert(qs->ss_family == AF_INET6 || qs->ss_family == AF_INET);
314 if (qs->ss_family == AF_INET6) {
315 struct sockaddr_in6 *q = (struct sockaddr_in6 *) qs;
316
317 /* socket_family */
318 dm->m.socket_family = DNSTAP__SOCKET_FAMILY__INET6;
319 dm->m.has_socket_family = 1;
320
321 /* addr: query_address or response_address */
322 qaddr->data = q->sin6_addr.s6_addr;
323 qaddr->len = 16; /* IPv6 */
324 *has_qaddr = 1;
325
326 /* port: query_port or response_port */
327 *qport = ntohs(q->sin6_port);
328 *has_qport = 1;
329 } else if (qs->ss_family == AF_INET) {
330 struct sockaddr_in *q = (struct sockaddr_in *) qs;
331
332 /* socket_family */
333 dm->m.socket_family = DNSTAP__SOCKET_FAMILY__INET;
334 dm->m.has_socket_family = 1;
335
336 /* addr: query_address or response_address */
337 qaddr->data = (uint8_t *) &q->sin_addr.s_addr;
338 qaddr->len = 4; /* IPv4 */
339 *has_qaddr = 1;
340
341 /* port: query_port or response_port */
342 *qport = ntohs(q->sin_port);
343 *has_qport = 1;
344 }
345
346 /*
347 * This block is to fill second set of fields in DNSTAP-message defined as request_/response_ names.
348 * Additional responsive structure is: struct sockaddr_storage *rs
349 */
350 if (rs && rs->ss_family == AF_INET6) {
351 struct sockaddr_in6 *r = (struct sockaddr_in6 *) rs;
352
353 /* addr: query_address or response_address */
354 raddr->data = r->sin6_addr.s6_addr;
355 raddr->len = 16; /* IPv6 */
356 *has_raddr = 1;
357
358 /* port: query_port or response_port */
359 *rport = ntohs(r->sin6_port);
360 *has_rport = 1;
361 } else if (rs && rs->ss_family == AF_INET) {
362 struct sockaddr_in *r = (struct sockaddr_in *) rs;
363
364 /* addr: query_address or response_address */
365 raddr->data = (uint8_t *) &r->sin_addr.s_addr;
366 raddr->len = 4; /* IPv4 */
367 *has_raddr = 1;
368
369 /* port: query_port or response_port */
370 *rport = ntohs(r->sin_port);
371 *has_rport = 1;
372 }
373
374 log_assert(cptype == comm_udp || cptype == comm_tcp);
375 if (cptype == comm_udp) {
376 /* socket_protocol */
377 dm->m.socket_protocol = DNSTAP__SOCKET_PROTOCOL__UDP;
378 dm->m.has_socket_protocol = 1;
379 } else if (cptype == comm_tcp) {
380 /* socket_protocol */
381 dm->m.socket_protocol = DNSTAP__SOCKET_PROTOCOL__TCP;
382 dm->m.has_socket_protocol = 1;
383 }
384 }
385
386 void
dt_msg_send_client_query(struct dt_env * env,struct sockaddr_storage * qsock,struct sockaddr_storage * rsock,enum comm_point_type cptype,sldns_buffer * qmsg,struct timeval * tstamp)387 dt_msg_send_client_query(struct dt_env *env,
388 struct sockaddr_storage *qsock,
389 struct sockaddr_storage *rsock,
390 enum comm_point_type cptype,
391 sldns_buffer *qmsg,
392 struct timeval* tstamp)
393 {
394 struct dt_msg dm;
395 struct timeval qtime;
396
397 if(tstamp)
398 memcpy(&qtime, tstamp, sizeof(qtime));
399 else gettimeofday(&qtime, NULL);
400
401 /* type */
402 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__CLIENT_QUERY);
403
404 /* query_time */
405 dt_fill_timeval(&qtime,
406 &dm.m.query_time_sec, &dm.m.has_query_time_sec,
407 &dm.m.query_time_nsec, &dm.m.has_query_time_nsec);
408
409 /* query_message */
410 dt_fill_buffer(qmsg, &dm.m.query_message, &dm.m.has_query_message);
411
412 /* socket_family, socket_protocol, query_address, query_port, response_address, response_port */
413 log_assert(cptype == comm_udp || cptype == comm_tcp);
414 dt_msg_fill_net(&dm, qsock, rsock, cptype,
415 &dm.m.query_address, &dm.m.has_query_address,
416 &dm.m.query_port, &dm.m.has_query_port,
417 &dm.m.response_address, &dm.m.has_response_address,
418 &dm.m.response_port, &dm.m.has_response_port);
419
420
421 if (dt_pack(&dm.d, &dm.buf, &dm.len_buf))
422 dt_send(env, dm.buf, dm.len_buf);
423 }
424
425 void
dt_msg_send_client_response(struct dt_env * env,struct sockaddr_storage * qsock,struct sockaddr_storage * rsock,enum comm_point_type cptype,sldns_buffer * rmsg)426 dt_msg_send_client_response(struct dt_env *env,
427 struct sockaddr_storage *qsock,
428 struct sockaddr_storage *rsock,
429 enum comm_point_type cptype,
430 sldns_buffer *rmsg)
431 {
432 struct dt_msg dm;
433 struct timeval rtime;
434
435 gettimeofday(&rtime, NULL);
436
437 /* type */
438 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__CLIENT_RESPONSE);
439
440 /* response_time */
441 dt_fill_timeval(&rtime,
442 &dm.m.response_time_sec, &dm.m.has_response_time_sec,
443 &dm.m.response_time_nsec, &dm.m.has_response_time_nsec);
444
445 /* response_message */
446 dt_fill_buffer(rmsg, &dm.m.response_message, &dm.m.has_response_message);
447
448 /* socket_family, socket_protocol, query_address, query_port, response_address, response_port */
449 log_assert(cptype == comm_udp || cptype == comm_tcp);
450 dt_msg_fill_net(&dm, qsock, rsock, cptype,
451 &dm.m.query_address, &dm.m.has_query_address,
452 &dm.m.query_port, &dm.m.has_query_port,
453 &dm.m.response_address, &dm.m.has_response_address,
454 &dm.m.response_port, &dm.m.has_response_port);
455
456 if (dt_pack(&dm.d, &dm.buf, &dm.len_buf))
457 dt_send(env, dm.buf, dm.len_buf);
458 }
459
460 void
dt_msg_send_outside_query(struct dt_env * env,struct sockaddr_storage * rsock,struct sockaddr_storage * qsock,enum comm_point_type cptype,uint8_t * zone,size_t zone_len,sldns_buffer * qmsg)461 dt_msg_send_outside_query(struct dt_env *env,
462 struct sockaddr_storage *rsock,
463 struct sockaddr_storage *qsock,
464 enum comm_point_type cptype,
465 uint8_t *zone, size_t zone_len,
466 sldns_buffer *qmsg)
467 {
468 struct dt_msg dm;
469 struct timeval qtime;
470 uint16_t qflags;
471
472 gettimeofday(&qtime, NULL);
473 qflags = sldns_buffer_read_u16_at(qmsg, 2);
474
475 /* type */
476 if (qflags & BIT_RD) {
477 if (!env->log_forwarder_query_messages)
478 return;
479 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__FORWARDER_QUERY);
480 } else {
481 if (!env->log_resolver_query_messages)
482 return;
483 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__RESOLVER_QUERY);
484 }
485
486 /* query_zone */
487 dm.m.query_zone.data = zone;
488 dm.m.query_zone.len = zone_len;
489 dm.m.has_query_zone = 1;
490
491 /* query_time_sec, query_time_nsec */
492 dt_fill_timeval(&qtime,
493 &dm.m.query_time_sec, &dm.m.has_query_time_sec,
494 &dm.m.query_time_nsec, &dm.m.has_query_time_nsec);
495
496 /* query_message */
497 dt_fill_buffer(qmsg, &dm.m.query_message, &dm.m.has_query_message);
498
499 /* socket_family, socket_protocol, response_address, response_port, query_address, query_port */
500 log_assert(cptype == comm_udp || cptype == comm_tcp);
501 dt_msg_fill_net(&dm, rsock, qsock, cptype,
502 &dm.m.response_address, &dm.m.has_response_address,
503 &dm.m.response_port, &dm.m.has_response_port,
504 &dm.m.query_address, &dm.m.has_query_address,
505 &dm.m.query_port, &dm.m.has_query_port);
506
507 if (dt_pack(&dm.d, &dm.buf, &dm.len_buf))
508 dt_send(env, dm.buf, dm.len_buf);
509 }
510
511 void
dt_msg_send_outside_response(struct dt_env * env,struct sockaddr_storage * rsock,struct sockaddr_storage * qsock,enum comm_point_type cptype,uint8_t * zone,size_t zone_len,uint8_t * qbuf,size_t qbuf_len,const struct timeval * qtime,const struct timeval * rtime,sldns_buffer * rmsg)512 dt_msg_send_outside_response(struct dt_env *env,
513 struct sockaddr_storage *rsock,
514 struct sockaddr_storage *qsock,
515 enum comm_point_type cptype,
516 uint8_t *zone, size_t zone_len,
517 uint8_t *qbuf, size_t qbuf_len,
518 const struct timeval *qtime,
519 const struct timeval *rtime,
520 sldns_buffer *rmsg)
521 {
522 struct dt_msg dm;
523 uint16_t qflags;
524
525 (void)qbuf_len; log_assert(qbuf_len >= sizeof(qflags));
526 memcpy(&qflags, qbuf, sizeof(qflags));
527 qflags = ntohs(qflags);
528
529 /* type */
530 if (qflags & BIT_RD) {
531 if (!env->log_forwarder_response_messages)
532 return;
533 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__FORWARDER_RESPONSE);
534 } else {
535 if (!env->log_resolver_response_messages)
536 return;
537 dt_msg_init(env, &dm, DNSTAP__MESSAGE__TYPE__RESOLVER_RESPONSE);
538 }
539
540 /* query_zone */
541 dm.m.query_zone.data = zone;
542 dm.m.query_zone.len = zone_len;
543 dm.m.has_query_zone = 1;
544
545 /* query_time_sec, query_time_nsec */
546 dt_fill_timeval(qtime,
547 &dm.m.query_time_sec, &dm.m.has_query_time_sec,
548 &dm.m.query_time_nsec, &dm.m.has_query_time_nsec);
549
550 /* response_time_sec, response_time_nsec */
551 dt_fill_timeval(rtime,
552 &dm.m.response_time_sec, &dm.m.has_response_time_sec,
553 &dm.m.response_time_nsec, &dm.m.has_response_time_nsec);
554
555 /* response_message */
556 dt_fill_buffer(rmsg, &dm.m.response_message, &dm.m.has_response_message);
557
558 /* socket_family, socket_protocol, response_address, response_port, query_address, query_port */
559 log_assert(cptype == comm_udp || cptype == comm_tcp);
560 dt_msg_fill_net(&dm, rsock, qsock, cptype,
561 &dm.m.response_address, &dm.m.has_response_address,
562 &dm.m.response_port, &dm.m.has_response_port,
563 &dm.m.query_address, &dm.m.has_query_address,
564 &dm.m.query_port, &dm.m.has_query_port);
565
566 if (dt_pack(&dm.d, &dm.buf, &dm.len_buf))
567 dt_send(env, dm.buf, dm.len_buf);
568 }
569
570 #endif /* USE_DNSTAP */
571