2 * libunbound/worker.c - worker thread or process that resolves
4 * Copyright (c) 2007, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * This file contains the worker process or thread that performs
40 * the DNS resolving and validation. The worker is called by a procedure
41 * and if in the background continues until exit, if in the foreground
42 * returns from the procedure when done.
46 #include <openssl/ssl.h>
48 #include "libunbound/libworker.h"
49 #include "libunbound/context.h"
50 #include "libunbound/unbound.h"
51 #include "libunbound/worker.h"
52 #include "libunbound/unbound-event.h"
53 #include "services/outside_network.h"
54 #include "services/mesh.h"
55 #include "services/localzone.h"
56 #include "services/cache/rrset.h"
57 #include "services/outbound_list.h"
58 #include "services/authzone.h"
59 #include "util/fptr_wlist.h"
60 #include "util/module.h"
61 #include "util/regional.h"
62 #include "util/random.h"
63 #include "util/config_file.h"
64 #include "util/netevent.h"
65 #include "util/storage/lookup3.h"
66 #include "util/storage/slabhash.h"
67 #include "util/net_help.h"
68 #include "util/data/dname.h"
69 #include "util/data/msgreply.h"
70 #include "util/data/msgencode.h"
71 #include "util/tube.h"
72 #include "iterator/iter_fwd.h"
73 #include "iterator/iter_hints.h"
74 #include "sldns/sbuffer.h"
75 #include "sldns/str2wire.h"
77 /** handle new query command for bg worker */
78 static void handle_newq(struct libworker* w, uint8_t* buf, uint32_t len);
80 /** delete libworker env */
82 libworker_delete_env(struct libworker* w)
85 outside_network_quit_prepare(w->back);
86 mesh_delete(w->env->mesh);
87 context_release_alloc(w->ctx, w->env->alloc,
88 !w->is_bg || w->is_bg_thread);
89 sldns_buffer_free(w->env->scratch_buffer);
90 regional_destroy(w->env->scratch);
91 forwards_delete(w->env->fwds);
92 hints_delete(w->env->hints);
93 ub_randfree(w->env->rnd);
97 SSL_CTX_free(w->sslctx);
99 outside_network_delete(w->back);
102 /** delete libworker struct */
104 libworker_delete(struct libworker* w)
107 libworker_delete_env(w);
108 comm_base_delete(w->base);
113 libworker_delete_event(struct libworker* w)
116 libworker_delete_env(w);
117 comm_base_delete_no_base(w->base);
121 /** setup fresh libworker struct */
122 static struct libworker*
123 libworker_setup(struct ub_ctx* ctx, int is_bg, struct ub_event_base* eb)
125 struct libworker* w = (struct libworker*)calloc(1, sizeof(*w));
126 struct config_file* cfg = ctx->env->cfg;
132 w->env = (struct module_env*)malloc(sizeof(*w->env));
138 w->env->alloc = context_obtain_alloc(ctx, !w->is_bg || w->is_bg_thread);
143 w->thread_num = w->env->alloc->thread_num;
144 alloc_set_id_cleanup(w->env->alloc, &libworker_alloc_cleanup, w);
145 if(!w->is_bg || w->is_bg_thread) {
146 lock_basic_lock(&ctx->cfglock);
148 w->env->scratch = regional_create_custom(cfg->msg_buffer_size);
149 w->env->scratch_buffer = sldns_buffer_new(cfg->msg_buffer_size);
150 w->env->fwds = forwards_create();
151 if(w->env->fwds && !forwards_apply_cfg(w->env->fwds, cfg)) {
152 forwards_delete(w->env->fwds);
155 w->env->hints = hints_create();
156 if(w->env->hints && !hints_apply_cfg(w->env->hints, cfg)) {
157 hints_delete(w->env->hints);
158 w->env->hints = NULL;
160 if(cfg->ssl_upstream || (cfg->tls_cert_bundle && cfg->tls_cert_bundle[0]) || cfg->tls_win_cert) {
161 w->sslctx = connect_sslctx_create(NULL, NULL,
162 cfg->tls_cert_bundle, cfg->tls_win_cert);
164 /* to make the setup fail after unlock */
165 hints_delete(w->env->hints);
166 w->env->hints = NULL;
169 if(!w->is_bg || w->is_bg_thread) {
170 lock_basic_unlock(&ctx->cfglock);
172 if(!w->env->scratch || !w->env->scratch_buffer || !w->env->fwds ||
177 w->env->worker = (struct worker*)w;
178 w->env->probe_timer = NULL;
179 if(!w->is_bg || w->is_bg_thread) {
180 lock_basic_lock(&ctx->cfglock);
182 if(!(w->env->rnd = ub_initstate(ctx->seed_rnd))) {
183 if(!w->is_bg || w->is_bg_thread) {
184 lock_basic_unlock(&ctx->cfglock);
189 if(!w->is_bg || w->is_bg_thread) {
190 lock_basic_unlock(&ctx->cfglock);
193 /* primitive lockout for threading: if it overwrites another
194 * thread it is like wiping the cache (which is likely empty
196 /* note we are holding the ctx lock in normal threaded
197 * cases so that is solved properly, it is only for many ctx
198 * in different threads that this may clash */
199 static int done_raninit = 0;
202 hash_set_raninit((uint32_t)ub_random(w->env->rnd));
207 w->base = comm_base_create_event(eb);
208 else w->base = comm_base_create(0);
213 w->env->worker_base = w->base;
214 if(!w->is_bg || w->is_bg_thread) {
215 lock_basic_lock(&ctx->cfglock);
217 numports = cfg_condense_ports(cfg, &ports);
219 if(!w->is_bg || w->is_bg_thread) {
220 lock_basic_unlock(&ctx->cfglock);
225 w->back = outside_network_create(w->base, cfg->msg_buffer_size,
226 (size_t)cfg->outgoing_num_ports, cfg->out_ifs,
227 cfg->num_out_ifs, cfg->do_ip4, cfg->do_ip6,
228 cfg->do_tcp?cfg->outgoing_num_tcp:0,
229 w->env->infra_cache, w->env->rnd, cfg->use_caps_bits_for_id,
230 ports, numports, cfg->unwanted_threshold,
231 cfg->outgoing_tcp_mss, &libworker_alloc_cleanup, w,
232 cfg->do_udp || cfg->udp_upstream_without_downstream, w->sslctx,
233 cfg->delay_close, NULL);
234 w->env->outnet = w->back;
235 if(!w->is_bg || w->is_bg_thread) {
236 lock_basic_unlock(&ctx->cfglock);
243 w->env->mesh = mesh_create(&ctx->mods, w->env);
248 w->env->send_query = &libworker_send_query;
249 w->env->detach_subs = &mesh_detach_subs;
250 w->env->attach_sub = &mesh_attach_sub;
251 w->env->add_sub = &mesh_add_sub;
252 w->env->kill_sub = &mesh_state_delete;
253 w->env->detect_cycle = &mesh_detect_cycle;
254 comm_base_timept(w->base, &w->env->now, &w->env->now_tv);
258 struct libworker* libworker_create_event(struct ub_ctx* ctx,
259 struct ub_event_base* eb)
261 return libworker_setup(ctx, 0, eb);
264 /** handle cancel command for bg worker */
266 handle_cancel(struct libworker* w, uint8_t* buf, uint32_t len)
269 if(w->is_bg_thread) {
270 lock_basic_lock(&w->ctx->cfglock);
271 q = context_deserialize_cancel(w->ctx, buf, len);
272 lock_basic_unlock(&w->ctx->cfglock);
274 q = context_deserialize_cancel(w->ctx, buf, len);
277 /* probably simply lookup failed, i.e. the message had been
278 * processed and answered before the cancel arrived */
285 /** do control command coming into bg server */
287 libworker_do_cmd(struct libworker* w, uint8_t* msg, uint32_t len)
289 switch(context_serial_getcmd(msg, len)) {
291 case UB_LIBCMD_ANSWER:
292 log_err("unknown command for bg worker %d",
293 (int)context_serial_getcmd(msg, len));
294 /* and fall through to quit */
298 comm_base_exit(w->base);
300 case UB_LIBCMD_NEWQUERY:
301 handle_newq(w, msg, len);
303 case UB_LIBCMD_CANCEL:
304 handle_cancel(w, msg, len);
309 /** handle control command coming into server */
311 libworker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
312 uint8_t* msg, size_t len, int err, void* arg)
314 struct libworker* w = (struct libworker*)arg;
318 /* it is of no use to go on, exit */
319 comm_base_exit(w->base);
322 libworker_do_cmd(w, msg, len); /* also frees the buf */
325 /** the background thread func */
327 libworker_dobg(void* arg)
331 struct libworker* w = (struct libworker*)arg;
334 log_err("libunbound bg worker init failed, nomem");
338 log_thread_set(&w->thread_num);
339 #ifdef THREADS_DISABLED
342 /* close non-used parts of the pipes */
343 tube_close_write(ctx->qq_pipe);
344 tube_close_read(ctx->rr_pipe);
346 if(!tube_setup_bg_listen(ctx->qq_pipe, w->base,
347 libworker_handle_control_cmd, w)) {
348 log_err("libunbound bg worker init failed, no bglisten");
351 if(!tube_setup_bg_write(ctx->rr_pipe, w->base)) {
352 log_err("libunbound bg worker init failed, no bgwrite");
357 comm_base_dispatch(w->base);
362 tube_remove_bg_listen(w->ctx->qq_pipe);
363 tube_remove_bg_write(w->ctx->rr_pipe);
365 (void)tube_write_msg(ctx->rr_pipe, (uint8_t*)&m,
366 (uint32_t)sizeof(m), 0);
367 #ifdef THREADS_DISABLED
368 /* close pipes from forked process before exit */
369 tube_close_read(ctx->qq_pipe);
370 tube_close_write(ctx->rr_pipe);
375 int libworker_bg(struct ub_ctx* ctx)
378 /* fork or threadcreate */
379 lock_basic_lock(&ctx->cfglock);
381 lock_basic_unlock(&ctx->cfglock);
382 w = libworker_setup(ctx, 1, NULL);
383 if(!w) return UB_NOMEM;
385 #ifdef ENABLE_LOCK_CHECKS
386 w->thread_num = 1; /* for nicer DEBUG checklocks */
388 ub_thread_create(&ctx->bg_tid, libworker_dobg, w);
390 lock_basic_unlock(&ctx->cfglock);
392 /* no fork on windows */
394 #else /* HAVE_FORK */
395 switch((ctx->bg_pid=fork())) {
397 w = libworker_setup(ctx, 1, NULL);
398 if(!w) fatal_exit("out of memory");
399 /* close non-used parts of the pipes */
400 tube_close_write(ctx->qq_pipe);
401 tube_close_read(ctx->rr_pipe);
402 (void)libworker_dobg(w);
408 /* close non-used parts, so that the worker
409 * bgprocess gets 'pipe closed' when the
410 * main process exits */
411 tube_close_read(ctx->qq_pipe);
412 tube_close_write(ctx->rr_pipe);
415 #endif /* HAVE_FORK */
420 /** insert canonname */
422 fill_canon(struct ub_result* res, uint8_t* s)
426 res->canonname = strdup(buf);
427 return res->canonname != 0;
430 /** fill data into result */
432 fill_res(struct ub_result* res, struct ub_packed_rrset_key* answer,
433 uint8_t* finalcname, struct query_info* rq, struct reply_info* rep)
436 struct packed_rrset_data* data;
440 if(!fill_canon(res, finalcname))
441 return 0; /* out of memory */
443 if(rep->rrset_count != 0)
444 res->ttl = (int)rep->ttl;
445 res->data = (char**)calloc(1, sizeof(char*));
446 res->len = (int*)calloc(1, sizeof(int));
447 return (res->data && res->len);
449 data = (struct packed_rrset_data*)answer->entry.data;
450 if(query_dname_compare(rq->qname, answer->rk.dname) != 0) {
451 if(!fill_canon(res, answer->rk.dname))
452 return 0; /* out of memory */
453 } else res->canonname = NULL;
454 res->data = (char**)calloc(data->count+1, sizeof(char*));
455 res->len = (int*)calloc(data->count+1, sizeof(int));
456 if(!res->data || !res->len)
457 return 0; /* out of memory */
458 for(i=0; i<data->count; i++) {
459 /* remove rdlength from rdata */
460 res->len[i] = (int)(data->rr_len[i] - 2);
461 res->data[i] = memdup(data->rr_data[i]+2, (size_t)res->len[i]);
463 return 0; /* out of memory */
465 /* ttl for positive answers, from CNAME and answer RRs */
466 if(data->count != 0) {
468 res->ttl = (int)data->ttl;
469 for(j=0; j<rep->an_numrrsets; j++) {
470 struct packed_rrset_data* d =
471 (struct packed_rrset_data*)rep->rrsets[j]->
473 if((int)d->ttl < res->ttl)
474 res->ttl = (int)d->ttl;
477 /* ttl for negative answers */
478 if(data->count == 0 && rep->rrset_count != 0)
479 res->ttl = (int)rep->ttl;
480 res->data[data->count] = NULL;
481 res->len[data->count] = 0;
485 /** fill result from parsed message, on error fills servfail */
487 libworker_enter_result(struct ub_result* res, sldns_buffer* buf,
488 struct regional* temp, enum sec_status msg_security)
490 struct query_info rq;
491 struct reply_info* rep;
492 res->rcode = LDNS_RCODE_SERVFAIL;
493 rep = parse_reply_in_temp_region(buf, temp, &rq);
495 log_err("cannot parse buf");
496 return; /* error parsing buf, or out of memory */
498 if(!fill_res(res, reply_find_answer_rrset(&rq, rep),
499 reply_find_final_cname_target(&rq, rep), &rq, rep))
500 return; /* out of memory */
501 /* rcode, havedata, nxdomain, secure, bogus */
502 res->rcode = (int)FLAGS_GET_RCODE(rep->flags);
503 if(res->data && res->data[0])
505 if(res->rcode == LDNS_RCODE_NXDOMAIN)
507 if(msg_security == sec_status_secure)
509 if(msg_security == sec_status_bogus ||
510 msg_security == sec_status_secure_sentinel_fail)
514 /** fillup fg results */
516 libworker_fillup_fg(struct ctx_query* q, int rcode, sldns_buffer* buf,
517 enum sec_status s, char* why_bogus, int was_ratelimited)
519 q->res->was_ratelimited = was_ratelimited;
521 q->res->why_bogus = strdup(why_bogus);
523 q->res->rcode = rcode;
528 q->res->rcode = LDNS_RCODE_SERVFAIL;
529 q->msg_security = sec_status_unchecked;
530 q->msg = memdup(sldns_buffer_begin(buf), sldns_buffer_limit(buf));
531 q->msg_len = sldns_buffer_limit(buf);
533 return; /* the error is in the rcode */
536 /* canonname and results */
538 libworker_enter_result(q->res, buf, q->w->env->scratch, s);
542 libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
543 char* why_bogus, int was_ratelimited)
545 struct ctx_query* q = (struct ctx_query*)arg;
546 /* fg query is done; exit comm base */
547 comm_base_exit(q->w->base);
549 libworker_fillup_fg(q, rcode, buf, s, why_bogus, was_ratelimited);
552 /** setup qinfo and edns */
554 setup_qinfo_edns(struct libworker* w, struct ctx_query* q,
555 struct query_info* qinfo, struct edns_data* edns)
557 qinfo->qtype = (uint16_t)q->res->qtype;
558 qinfo->qclass = (uint16_t)q->res->qclass;
559 qinfo->local_alias = NULL;
560 qinfo->qname = sldns_str2wire_dname(q->res->qname, &qinfo->qname_len);
564 qinfo->local_alias = NULL;
565 edns->edns_present = 1;
567 edns->edns_version = 0;
568 edns->bits = EDNS_DO;
569 edns->opt_list = NULL;
570 if(sldns_buffer_capacity(w->back->udp_buff) < 65535)
571 edns->udp_size = (uint16_t)sldns_buffer_capacity(
573 else edns->udp_size = 65535;
577 int libworker_fg(struct ub_ctx* ctx, struct ctx_query* q)
579 struct libworker* w = libworker_setup(ctx, 0, NULL);
580 uint16_t qflags, qid;
581 struct query_info qinfo;
582 struct edns_data edns;
585 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
592 /* see if there is a fixed answer */
593 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
594 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
595 if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns,
596 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
597 NULL, 0, NULL, 0, NULL)) {
598 regional_free_all(w->env->scratch);
599 libworker_fillup_fg(q, LDNS_RCODE_NOERROR,
600 w->back->udp_buff, sec_status_insecure, NULL, 0);
605 if(ctx->env->auth_zones && auth_zones_answer(ctx->env->auth_zones,
606 w->env, &qinfo, &edns, NULL, w->back->udp_buff, w->env->scratch)) {
607 regional_free_all(w->env->scratch);
608 libworker_fillup_fg(q, LDNS_RCODE_NOERROR,
609 w->back->udp_buff, sec_status_insecure, NULL, 0);
614 /* process new query */
615 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
616 w->back->udp_buff, qid, libworker_fg_done_cb, q)) {
623 comm_base_dispatch(w->base);
630 libworker_event_done_cb(void* arg, int rcode, sldns_buffer* buf,
631 enum sec_status s, char* why_bogus, int was_ratelimited)
633 struct ctx_query* q = (struct ctx_query*)arg;
634 ub_event_callback_type cb = q->cb_event;
635 void* cb_arg = q->cb_arg;
636 int cancelled = q->cancelled;
639 struct ub_ctx* ctx = q->w->ctx;
640 lock_basic_lock(&ctx->cfglock);
641 (void)rbtree_delete(&ctx->queries, q->node.key);
643 context_query_delete(q);
644 lock_basic_unlock(&ctx->cfglock);
649 if(s == sec_status_bogus)
651 else if(s == sec_status_secure)
653 (*cb)(cb_arg, rcode, (buf?(void*)sldns_buffer_begin(buf):NULL),
654 (buf?(int)sldns_buffer_limit(buf):0), sec, why_bogus, was_ratelimited);
658 int libworker_attach_mesh(struct ub_ctx* ctx, struct ctx_query* q,
661 struct libworker* w = ctx->event_worker;
662 uint16_t qflags, qid;
663 struct query_info qinfo;
664 struct edns_data edns;
667 if(!setup_qinfo_edns(w, q, &qinfo, &edns))
672 /* see if there is a fixed answer */
673 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
674 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
675 if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns,
676 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
677 NULL, 0, NULL, 0, NULL)) {
678 regional_free_all(w->env->scratch);
680 libworker_event_done_cb(q, LDNS_RCODE_NOERROR,
681 w->back->udp_buff, sec_status_insecure, NULL, 0);
684 if(ctx->env->auth_zones && auth_zones_answer(ctx->env->auth_zones,
685 w->env, &qinfo, &edns, NULL, w->back->udp_buff, w->env->scratch)) {
686 regional_free_all(w->env->scratch);
688 libworker_event_done_cb(q, LDNS_RCODE_NOERROR,
689 w->back->udp_buff, sec_status_insecure, NULL, 0);
692 /* process new query */
694 *async_id = q->querynum;
695 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
696 w->back->udp_buff, qid, libworker_event_done_cb, q)) {
704 /** add result to the bg worker result queue */
706 add_bg_result(struct libworker* w, struct ctx_query* q, sldns_buffer* pkt,
707 int err, char* reason, int was_ratelimited)
713 context_query_delete(q);
716 /* serialize and delete unneeded q */
717 if(w->is_bg_thread) {
718 lock_basic_lock(&w->ctx->cfglock);
720 q->res->why_bogus = strdup(reason);
721 q->res->was_ratelimited = was_ratelimited;
723 q->msg_len = sldns_buffer_remaining(pkt);
724 q->msg = memdup(sldns_buffer_begin(pkt), q->msg_len);
726 msg = context_serialize_answer(q, UB_NOMEM, NULL, &len);
728 msg = context_serialize_answer(q, err, NULL, &len);
731 msg = context_serialize_answer(q, err, NULL, &len);
733 lock_basic_unlock(&w->ctx->cfglock);
736 q->res->why_bogus = strdup(reason);
737 q->res->was_ratelimited = was_ratelimited;
738 msg = context_serialize_answer(q, err, pkt, &len);
739 (void)rbtree_delete(&w->ctx->queries, q->node.key);
741 context_query_delete(q);
745 log_err("out of memory for async answer");
748 if(!tube_queue_item(w->ctx->rr_pipe, msg, len)) {
749 log_err("out of memory for async answer");
755 libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
756 char* why_bogus, int was_ratelimited)
758 struct ctx_query* q = (struct ctx_query*)arg;
760 if(q->cancelled || q->w->back->want_to_quit) {
761 if(q->w->is_bg_thread) {
763 struct ub_ctx* ctx = q->w->ctx;
764 lock_basic_lock(&ctx->cfglock);
765 (void)rbtree_delete(&ctx->queries, q->node.key);
767 context_query_delete(q);
768 lock_basic_unlock(&ctx->cfglock);
770 /* cancelled, do not give answer */
775 buf = q->w->env->scratch_buffer;
778 error_encode(buf, rcode, NULL, 0, BIT_RD, NULL);
780 add_bg_result(q->w, q, buf, UB_NOERROR, why_bogus, was_ratelimited);
784 /** handle new query command for bg worker */
786 handle_newq(struct libworker* w, uint8_t* buf, uint32_t len)
788 uint16_t qflags, qid;
789 struct query_info qinfo;
790 struct edns_data edns;
792 if(w->is_bg_thread) {
793 lock_basic_lock(&w->ctx->cfglock);
794 q = context_lookup_new_query(w->ctx, buf, len);
795 lock_basic_unlock(&w->ctx->cfglock);
797 q = context_deserialize_new_query(w->ctx, buf, len);
801 log_err("failed to deserialize newq");
804 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
805 add_bg_result(w, q, NULL, UB_SYNTAX, NULL, 0);
810 /* see if there is a fixed answer */
811 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
812 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
813 if(local_zones_answer(w->ctx->local_zones, w->env, &qinfo, &edns,
814 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
815 NULL, 0, NULL, 0, NULL)) {
816 regional_free_all(w->env->scratch);
817 q->msg_security = sec_status_insecure;
818 add_bg_result(w, q, w->back->udp_buff, UB_NOERROR, NULL, 0);
822 if(w->ctx->env->auth_zones && auth_zones_answer(w->ctx->env->auth_zones,
823 w->env, &qinfo, &edns, NULL, w->back->udp_buff, w->env->scratch)) {
824 regional_free_all(w->env->scratch);
825 q->msg_security = sec_status_insecure;
826 add_bg_result(w, q, w->back->udp_buff, UB_NOERROR, NULL, 0);
831 /* process new query */
832 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
833 w->back->udp_buff, qid, libworker_bg_done_cb, q)) {
834 add_bg_result(w, q, NULL, UB_NOMEM, NULL, 0);
839 void libworker_alloc_cleanup(void* arg)
841 struct libworker* w = (struct libworker*)arg;
842 slabhash_clear(&w->env->rrset_cache->table);
843 slabhash_clear(w->env->msg_cache);
846 struct outbound_entry* libworker_send_query(struct query_info* qinfo,
847 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
848 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
849 size_t zonelen, int ssl_upstream, char* tls_auth_name,
850 struct module_qstate* q)
852 struct libworker* w = (struct libworker*)q->env->worker;
853 struct outbound_entry* e = (struct outbound_entry*)regional_alloc(
854 q->region, sizeof(*e));
858 e->qsent = outnet_serviced_query(w->back, qinfo, flags, dnssec,
859 want_dnssec, nocaps, q->env->cfg->tcp_upstream, ssl_upstream,
860 tls_auth_name, addr, addrlen, zone, zonelen, q,
861 libworker_handle_service_reply, e, w->back->udp_buff, q->env);
869 libworker_handle_reply(struct comm_point* c, void* arg, int error,
870 struct comm_reply* reply_info)
872 struct module_qstate* q = (struct module_qstate*)arg;
873 struct libworker* lw = (struct libworker*)q->env->worker;
874 struct outbound_entry e;
879 mesh_report_reply(lw->env->mesh, &e, reply_info, error);
883 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
884 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
886 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
887 /* error becomes timeout for the module as if this reply
889 mesh_report_reply(lw->env->mesh, &e, reply_info,
893 mesh_report_reply(lw->env->mesh, &e, reply_info, NETEVENT_NOERROR);
898 libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
899 struct comm_reply* reply_info)
901 struct outbound_entry* e = (struct outbound_entry*)arg;
902 struct libworker* lw = (struct libworker*)e->qstate->env->worker;
905 mesh_report_reply(lw->env->mesh, e, reply_info, error);
909 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
910 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
912 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
913 /* error becomes timeout for the module as if this reply
915 mesh_report_reply(lw->env->mesh, e, reply_info,
919 mesh_report_reply(lw->env->mesh, e, reply_info, NETEVENT_NOERROR);
923 /* --- fake callbacks for fptr_wlist to work --- */
924 void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
925 uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
926 int ATTR_UNUSED(error), void* ATTR_UNUSED(arg))
931 int worker_handle_request(struct comm_point* ATTR_UNUSED(c),
932 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
933 struct comm_reply* ATTR_UNUSED(repinfo))
939 int worker_handle_reply(struct comm_point* ATTR_UNUSED(c),
940 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
941 struct comm_reply* ATTR_UNUSED(reply_info))
947 int worker_handle_service_reply(struct comm_point* ATTR_UNUSED(c),
948 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
949 struct comm_reply* ATTR_UNUSED(reply_info))
955 int remote_accept_callback(struct comm_point* ATTR_UNUSED(c),
956 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
957 struct comm_reply* ATTR_UNUSED(repinfo))
963 int remote_control_callback(struct comm_point* ATTR_UNUSED(c),
964 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
965 struct comm_reply* ATTR_UNUSED(repinfo))
971 void worker_sighandler(int ATTR_UNUSED(sig), void* ATTR_UNUSED(arg))
976 struct outbound_entry* worker_send_query(struct query_info* ATTR_UNUSED(qinfo),
977 uint16_t ATTR_UNUSED(flags), int ATTR_UNUSED(dnssec),
978 int ATTR_UNUSED(want_dnssec), int ATTR_UNUSED(nocaps),
979 struct sockaddr_storage* ATTR_UNUSED(addr), socklen_t ATTR_UNUSED(addrlen),
980 uint8_t* ATTR_UNUSED(zone), size_t ATTR_UNUSED(zonelen),
981 int ATTR_UNUSED(ssl_upstream), char* ATTR_UNUSED(tls_auth_name),
982 struct module_qstate* ATTR_UNUSED(q))
989 worker_alloc_cleanup(void* ATTR_UNUSED(arg))
994 void worker_stat_timer_cb(void* ATTR_UNUSED(arg))
999 void worker_probe_timer_cb(void* ATTR_UNUSED(arg))
1004 void worker_start_accept(void* ATTR_UNUSED(arg))
1009 void worker_stop_accept(void* ATTR_UNUSED(arg))
1014 int order_lock_cmp(const void* ATTR_UNUSED(e1), const void* ATTR_UNUSED(e2))
1021 codeline_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1027 int replay_var_compare(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1033 void remote_get_opt_ssl(char* ATTR_UNUSED(str), void* ATTR_UNUSED(arg))
1038 #ifdef UB_ON_WINDOWS
1040 worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev), void*
1046 wsvc_cron_cb(void* ATTR_UNUSED(arg))
1050 #endif /* UB_ON_WINDOWS */