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 "util/fptr_wlist.h"
59 #include "util/module.h"
60 #include "util/regional.h"
61 #include "util/random.h"
62 #include "util/config_file.h"
63 #include "util/netevent.h"
64 #include "util/storage/lookup3.h"
65 #include "util/storage/slabhash.h"
66 #include "util/net_help.h"
67 #include "util/data/dname.h"
68 #include "util/data/msgreply.h"
69 #include "util/data/msgencode.h"
70 #include "util/tube.h"
71 #include "iterator/iter_fwd.h"
72 #include "iterator/iter_hints.h"
73 #include "sldns/sbuffer.h"
74 #include "sldns/str2wire.h"
76 /** handle new query command for bg worker */
77 static void handle_newq(struct libworker* w, uint8_t* buf, uint32_t len);
79 /** delete libworker env */
81 libworker_delete_env(struct libworker* w)
84 outside_network_quit_prepare(w->back);
85 mesh_delete(w->env->mesh);
86 context_release_alloc(w->ctx, w->env->alloc,
87 !w->is_bg || w->is_bg_thread);
88 sldns_buffer_free(w->env->scratch_buffer);
89 regional_destroy(w->env->scratch);
90 forwards_delete(w->env->fwds);
91 hints_delete(w->env->hints);
92 ub_randfree(w->env->rnd);
96 SSL_CTX_free(w->sslctx);
98 outside_network_delete(w->back);
101 /** delete libworker struct */
103 libworker_delete(struct libworker* w)
106 libworker_delete_env(w);
107 comm_base_delete(w->base);
112 libworker_delete_event(struct libworker* w)
115 libworker_delete_env(w);
116 comm_base_delete_no_base(w->base);
120 /** setup fresh libworker struct */
121 static struct libworker*
122 libworker_setup(struct ub_ctx* ctx, int is_bg, struct 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) {
161 w->sslctx = connect_sslctx_create(NULL, NULL, NULL);
163 /* to make the setup fail after unlock */
164 hints_delete(w->env->hints);
165 w->env->hints = NULL;
168 if(!w->is_bg || w->is_bg_thread) {
169 lock_basic_unlock(&ctx->cfglock);
171 if(!w->env->scratch || !w->env->scratch_buffer || !w->env->fwds ||
176 w->env->worker = (struct worker*)w;
177 w->env->probe_timer = NULL;
178 seed = (unsigned int)time(NULL) ^ (unsigned int)getpid() ^
179 (((unsigned int)w->thread_num)<<17);
180 seed ^= (unsigned int)w->env->alloc->next_id;
181 if(!w->is_bg || w->is_bg_thread) {
182 lock_basic_lock(&ctx->cfglock);
184 if(!(w->env->rnd = ub_initstate(seed, ctx->seed_rnd))) {
185 if(!w->is_bg || w->is_bg_thread) {
186 lock_basic_unlock(&ctx->cfglock);
192 if(!w->is_bg || w->is_bg_thread) {
193 lock_basic_unlock(&ctx->cfglock);
196 /* primitive lockout for threading: if it overwrites another
197 * thread it is like wiping the cache (which is likely empty
199 /* note we are holding the ctx lock in normal threaded
200 * cases so that is solved properly, it is only for many ctx
201 * in different threads that this may clash */
202 static int done_raninit = 0;
205 hash_set_raninit((uint32_t)ub_random(w->env->rnd));
211 w->base = comm_base_create_event(eb);
212 else w->base = comm_base_create(0);
217 if(!w->is_bg || w->is_bg_thread) {
218 lock_basic_lock(&ctx->cfglock);
220 numports = cfg_condense_ports(cfg, &ports);
222 int locked = !w->is_bg || w->is_bg_thread;
225 lock_basic_unlock(&ctx->cfglock);
229 w->back = outside_network_create(w->base, cfg->msg_buffer_size,
230 (size_t)cfg->outgoing_num_ports, cfg->out_ifs,
231 cfg->num_out_ifs, cfg->do_ip4, cfg->do_ip6,
232 cfg->do_tcp?cfg->outgoing_num_tcp:0,
233 w->env->infra_cache, w->env->rnd, cfg->use_caps_bits_for_id,
234 ports, numports, cfg->unwanted_threshold,
235 &libworker_alloc_cleanup, w, cfg->do_udp, w->sslctx,
236 cfg->delay_close, NULL);
237 if(!w->is_bg || w->is_bg_thread) {
238 lock_basic_unlock(&ctx->cfglock);
245 w->env->mesh = mesh_create(&ctx->mods, w->env);
250 w->env->send_query = &libworker_send_query;
251 w->env->detach_subs = &mesh_detach_subs;
252 w->env->attach_sub = &mesh_attach_sub;
253 w->env->kill_sub = &mesh_state_delete;
254 w->env->detect_cycle = &mesh_detect_cycle;
255 comm_base_timept(w->base, &w->env->now, &w->env->now_tv);
259 struct libworker* libworker_create_event(struct ub_ctx* ctx,
260 struct event_base* eb)
262 return libworker_setup(ctx, 0, eb);
265 /** handle cancel command for bg worker */
267 handle_cancel(struct libworker* w, uint8_t* buf, uint32_t len)
270 if(w->is_bg_thread) {
271 lock_basic_lock(&w->ctx->cfglock);
272 q = context_deserialize_cancel(w->ctx, buf, len);
273 lock_basic_unlock(&w->ctx->cfglock);
275 q = context_deserialize_cancel(w->ctx, buf, len);
278 /* probably simply lookup failed, i.e. the message had been
279 * processed and answered before the cancel arrived */
286 /** do control command coming into bg server */
288 libworker_do_cmd(struct libworker* w, uint8_t* msg, uint32_t len)
290 switch(context_serial_getcmd(msg, len)) {
292 case UB_LIBCMD_ANSWER:
293 log_err("unknown command for bg worker %d",
294 (int)context_serial_getcmd(msg, len));
295 /* 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);
361 tube_remove_bg_listen(w->ctx->qq_pipe);
362 tube_remove_bg_write(w->ctx->rr_pipe);
364 (void)tube_write_msg(ctx->rr_pipe, (uint8_t*)&m,
365 (uint32_t)sizeof(m), 0);
366 #ifdef THREADS_DISABLED
367 /* close pipes from forked process before exit */
368 tube_close_read(ctx->qq_pipe);
369 tube_close_write(ctx->rr_pipe);
374 int libworker_bg(struct ub_ctx* ctx)
377 /* fork or threadcreate */
378 lock_basic_lock(&ctx->cfglock);
380 lock_basic_unlock(&ctx->cfglock);
381 w = libworker_setup(ctx, 1, NULL);
382 if(!w) return UB_NOMEM;
384 #ifdef ENABLE_LOCK_CHECKS
385 w->thread_num = 1; /* for nicer DEBUG checklocks */
387 ub_thread_create(&ctx->bg_tid, libworker_dobg, w);
389 lock_basic_unlock(&ctx->cfglock);
391 /* no fork on windows */
393 #else /* HAVE_FORK */
394 switch((ctx->bg_pid=fork())) {
396 w = libworker_setup(ctx, 1, NULL);
397 if(!w) fatal_exit("out of memory");
398 /* close non-used parts of the pipes */
399 tube_close_write(ctx->qq_pipe);
400 tube_close_read(ctx->rr_pipe);
401 (void)libworker_dobg(w);
407 /* close non-used parts, so that the worker
408 * bgprocess gets 'pipe closed' when the
409 * main process exits */
410 tube_close_read(ctx->qq_pipe);
411 tube_close_write(ctx->rr_pipe);
414 #endif /* HAVE_FORK */
419 /** get msg reply struct (in temp region) */
420 static struct reply_info*
421 parse_reply(sldns_buffer* pkt, struct regional* region, struct query_info* qi)
423 struct reply_info* rep;
424 struct msg_parse* msg;
425 if(!(msg = regional_alloc(region, sizeof(*msg)))) {
428 memset(msg, 0, sizeof(*msg));
429 sldns_buffer_set_position(pkt, 0);
430 if(parse_packet(pkt, msg, region) != 0)
432 if(!parse_create_msg(pkt, msg, NULL, qi, &rep, region)) {
438 /** insert canonname */
440 fill_canon(struct ub_result* res, uint8_t* s)
444 res->canonname = strdup(buf);
445 return res->canonname != 0;
448 /** fill data into result */
450 fill_res(struct ub_result* res, struct ub_packed_rrset_key* answer,
451 uint8_t* finalcname, struct query_info* rq, struct reply_info* rep)
454 struct packed_rrset_data* data;
458 if(!fill_canon(res, finalcname))
459 return 0; /* out of memory */
461 if(rep->rrset_count != 0)
462 res->ttl = (int)rep->ttl;
463 res->data = (char**)calloc(1, sizeof(char*));
464 res->len = (int*)calloc(1, sizeof(int));
465 return (res->data && res->len);
467 data = (struct packed_rrset_data*)answer->entry.data;
468 if(query_dname_compare(rq->qname, answer->rk.dname) != 0) {
469 if(!fill_canon(res, answer->rk.dname))
470 return 0; /* out of memory */
471 } else res->canonname = NULL;
472 res->data = (char**)calloc(data->count+1, sizeof(char*));
473 res->len = (int*)calloc(data->count+1, sizeof(int));
474 if(!res->data || !res->len)
475 return 0; /* out of memory */
476 for(i=0; i<data->count; i++) {
477 /* remove rdlength from rdata */
478 res->len[i] = (int)(data->rr_len[i] - 2);
479 res->data[i] = memdup(data->rr_data[i]+2, (size_t)res->len[i]);
481 return 0; /* out of memory */
483 /* ttl for positive answers, from CNAME and answer RRs */
484 if(data->count != 0) {
486 res->ttl = (int)data->ttl;
487 for(j=0; j<rep->an_numrrsets; j++) {
488 struct packed_rrset_data* d =
489 (struct packed_rrset_data*)rep->rrsets[j]->
491 if((int)d->ttl < res->ttl)
492 res->ttl = (int)d->ttl;
495 /* ttl for negative answers */
496 if(data->count == 0 && rep->rrset_count != 0)
497 res->ttl = (int)rep->ttl;
498 res->data[data->count] = NULL;
499 res->len[data->count] = 0;
503 /** fill result from parsed message, on error fills servfail */
505 libworker_enter_result(struct ub_result* res, sldns_buffer* buf,
506 struct regional* temp, enum sec_status msg_security)
508 struct query_info rq;
509 struct reply_info* rep;
510 res->rcode = LDNS_RCODE_SERVFAIL;
511 rep = parse_reply(buf, temp, &rq);
513 log_err("cannot parse buf");
514 return; /* error parsing buf, or out of memory */
516 if(!fill_res(res, reply_find_answer_rrset(&rq, rep),
517 reply_find_final_cname_target(&rq, rep), &rq, rep))
518 return; /* out of memory */
519 /* rcode, havedata, nxdomain, secure, bogus */
520 res->rcode = (int)FLAGS_GET_RCODE(rep->flags);
521 if(res->data && res->data[0])
523 if(res->rcode == LDNS_RCODE_NXDOMAIN)
525 if(msg_security == sec_status_secure)
527 if(msg_security == sec_status_bogus)
531 /** fillup fg results */
533 libworker_fillup_fg(struct ctx_query* q, int rcode, sldns_buffer* buf,
534 enum sec_status s, char* why_bogus)
537 q->res->why_bogus = strdup(why_bogus);
539 q->res->rcode = rcode;
544 q->res->rcode = LDNS_RCODE_SERVFAIL;
546 q->msg = memdup(sldns_buffer_begin(buf), sldns_buffer_limit(buf));
547 q->msg_len = sldns_buffer_limit(buf);
549 return; /* the error is in the rcode */
552 /* canonname and results */
554 libworker_enter_result(q->res, buf, q->w->env->scratch, s);
558 libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
561 struct ctx_query* q = (struct ctx_query*)arg;
562 /* fg query is done; exit comm base */
563 comm_base_exit(q->w->base);
565 libworker_fillup_fg(q, rcode, buf, s, why_bogus);
568 /** setup qinfo and edns */
570 setup_qinfo_edns(struct libworker* w, struct ctx_query* q,
571 struct query_info* qinfo, struct edns_data* edns)
573 qinfo->qtype = (uint16_t)q->res->qtype;
574 qinfo->qclass = (uint16_t)q->res->qclass;
575 qinfo->qname = sldns_str2wire_dname(q->res->qname, &qinfo->qname_len);
579 edns->edns_present = 1;
581 edns->edns_version = 0;
582 edns->bits = EDNS_DO;
583 if(sldns_buffer_capacity(w->back->udp_buff) < 65535)
584 edns->udp_size = (uint16_t)sldns_buffer_capacity(
586 else edns->udp_size = 65535;
590 int libworker_fg(struct ub_ctx* ctx, struct ctx_query* q)
592 struct libworker* w = libworker_setup(ctx, 0, NULL);
593 uint16_t qflags, qid;
594 struct query_info qinfo;
595 struct edns_data edns;
598 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
605 /* see if there is a fixed answer */
606 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
607 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
608 if(local_zones_answer(ctx->local_zones, &qinfo, &edns,
609 w->back->udp_buff, w->env->scratch, NULL)) {
610 regional_free_all(w->env->scratch);
611 libworker_fillup_fg(q, LDNS_RCODE_NOERROR,
612 w->back->udp_buff, sec_status_insecure, NULL);
617 /* process new query */
618 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
619 w->back->udp_buff, qid, libworker_fg_done_cb, q)) {
626 comm_base_dispatch(w->base);
633 libworker_event_done_cb(void* arg, int rcode, sldns_buffer* buf,
634 enum sec_status s, char* why_bogus)
636 struct ctx_query* q = (struct ctx_query*)arg;
637 ub_event_callback_t cb = (ub_event_callback_t)q->cb;
638 void* cb_arg = q->cb_arg;
639 int cancelled = q->cancelled;
642 struct ub_ctx* ctx = q->w->ctx;
643 lock_basic_lock(&ctx->cfglock);
644 (void)rbtree_delete(&ctx->queries, q->node.key);
646 context_query_delete(q);
647 lock_basic_unlock(&ctx->cfglock);
652 if(s == sec_status_bogus)
654 else if(s == sec_status_secure)
656 (*cb)(cb_arg, rcode, (void*)sldns_buffer_begin(buf),
657 (int)sldns_buffer_limit(buf), sec, why_bogus);
661 int libworker_attach_mesh(struct ub_ctx* ctx, struct ctx_query* q,
664 struct libworker* w = ctx->event_worker;
665 uint16_t qflags, qid;
666 struct query_info qinfo;
667 struct edns_data edns;
670 if(!setup_qinfo_edns(w, q, &qinfo, &edns))
675 /* see if there is a fixed answer */
676 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
677 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
678 if(local_zones_answer(ctx->local_zones, &qinfo, &edns,
679 w->back->udp_buff, w->env->scratch, NULL)) {
680 regional_free_all(w->env->scratch);
682 libworker_event_done_cb(q, LDNS_RCODE_NOERROR,
683 w->back->udp_buff, sec_status_insecure, NULL);
686 /* process new query */
688 *async_id = q->querynum;
689 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
690 w->back->udp_buff, qid, libworker_event_done_cb, q)) {
698 /** add result to the bg worker result queue */
700 add_bg_result(struct libworker* w, struct ctx_query* q, sldns_buffer* pkt,
701 int err, char* reason)
706 /* serialize and delete unneeded q */
707 if(w->is_bg_thread) {
708 lock_basic_lock(&w->ctx->cfglock);
710 q->res->why_bogus = strdup(reason);
712 q->msg_len = sldns_buffer_remaining(pkt);
713 q->msg = memdup(sldns_buffer_begin(pkt), q->msg_len);
715 msg = context_serialize_answer(q, UB_NOMEM,
717 else msg = context_serialize_answer(q, err,
719 } else msg = context_serialize_answer(q, err, NULL, &len);
720 lock_basic_unlock(&w->ctx->cfglock);
723 q->res->why_bogus = strdup(reason);
724 msg = context_serialize_answer(q, err, pkt, &len);
725 (void)rbtree_delete(&w->ctx->queries, q->node.key);
727 context_query_delete(q);
731 log_err("out of memory for async answer");
734 if(!tube_queue_item(w->ctx->rr_pipe, msg, len)) {
735 log_err("out of memory for async answer");
741 libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
744 struct ctx_query* q = (struct ctx_query*)arg;
747 if(q->w->is_bg_thread) {
749 struct ub_ctx* ctx = q->w->ctx;
750 lock_basic_lock(&ctx->cfglock);
751 (void)rbtree_delete(&ctx->queries, q->node.key);
753 context_query_delete(q);
754 lock_basic_unlock(&ctx->cfglock);
756 /* cancelled, do not give answer */
761 buf = q->w->env->scratch_buffer;
763 error_encode(buf, rcode, NULL, 0, BIT_RD, NULL);
765 add_bg_result(q->w, q, buf, UB_NOERROR, why_bogus);
769 /** handle new query command for bg worker */
771 handle_newq(struct libworker* w, uint8_t* buf, uint32_t len)
773 uint16_t qflags, qid;
774 struct query_info qinfo;
775 struct edns_data edns;
777 if(w->is_bg_thread) {
778 lock_basic_lock(&w->ctx->cfglock);
779 q = context_lookup_new_query(w->ctx, buf, len);
780 lock_basic_unlock(&w->ctx->cfglock);
782 q = context_deserialize_new_query(w->ctx, buf, len);
786 log_err("failed to deserialize newq");
789 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
790 add_bg_result(w, q, NULL, UB_SYNTAX, NULL);
795 /* see if there is a fixed answer */
796 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
797 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
798 if(local_zones_answer(w->ctx->local_zones, &qinfo, &edns,
799 w->back->udp_buff, w->env->scratch, NULL)) {
800 regional_free_all(w->env->scratch);
801 q->msg_security = sec_status_insecure;
802 add_bg_result(w, q, w->back->udp_buff, UB_NOERROR, NULL);
807 /* process new query */
808 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
809 w->back->udp_buff, qid, libworker_bg_done_cb, q)) {
810 add_bg_result(w, q, NULL, UB_NOMEM, NULL);
815 void libworker_alloc_cleanup(void* arg)
817 struct libworker* w = (struct libworker*)arg;
818 slabhash_clear(&w->env->rrset_cache->table);
819 slabhash_clear(w->env->msg_cache);
822 struct outbound_entry* libworker_send_query(uint8_t* qname, size_t qnamelen,
823 uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec,
824 int want_dnssec, int nocaps, struct sockaddr_storage* addr,
825 socklen_t addrlen, uint8_t* zone, size_t zonelen,
826 struct module_qstate* q)
828 struct libworker* w = (struct libworker*)q->env->worker;
829 struct outbound_entry* e = (struct outbound_entry*)regional_alloc(
830 q->region, sizeof(*e));
834 e->qsent = outnet_serviced_query(w->back, qname,
835 qnamelen, qtype, qclass, flags, dnssec, want_dnssec, nocaps,
836 q->env->cfg->tcp_upstream, q->env->cfg->ssl_upstream, addr,
837 addrlen, zone, zonelen, libworker_handle_service_reply, e,
846 libworker_handle_reply(struct comm_point* c, void* arg, int error,
847 struct comm_reply* reply_info)
849 struct module_qstate* q = (struct module_qstate*)arg;
850 struct libworker* lw = (struct libworker*)q->env->worker;
851 struct outbound_entry e;
856 mesh_report_reply(lw->env->mesh, &e, reply_info, error);
860 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
861 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
863 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
864 /* error becomes timeout for the module as if this reply
866 mesh_report_reply(lw->env->mesh, &e, reply_info,
870 mesh_report_reply(lw->env->mesh, &e, reply_info, NETEVENT_NOERROR);
875 libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
876 struct comm_reply* reply_info)
878 struct outbound_entry* e = (struct outbound_entry*)arg;
879 struct libworker* lw = (struct libworker*)e->qstate->env->worker;
882 mesh_report_reply(lw->env->mesh, e, reply_info, error);
886 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
887 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
889 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
890 /* error becomes timeout for the module as if this reply
892 mesh_report_reply(lw->env->mesh, e, reply_info,
896 mesh_report_reply(lw->env->mesh, e, reply_info, NETEVENT_NOERROR);
900 /* --- fake callbacks for fptr_wlist to work --- */
901 void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
902 uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
903 int ATTR_UNUSED(error), void* ATTR_UNUSED(arg))
908 int worker_handle_request(struct comm_point* ATTR_UNUSED(c),
909 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
910 struct comm_reply* ATTR_UNUSED(repinfo))
916 int worker_handle_reply(struct comm_point* ATTR_UNUSED(c),
917 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
918 struct comm_reply* ATTR_UNUSED(reply_info))
924 int worker_handle_service_reply(struct comm_point* ATTR_UNUSED(c),
925 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
926 struct comm_reply* ATTR_UNUSED(reply_info))
932 int remote_accept_callback(struct comm_point* ATTR_UNUSED(c),
933 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
934 struct comm_reply* ATTR_UNUSED(repinfo))
940 int remote_control_callback(struct comm_point* ATTR_UNUSED(c),
941 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
942 struct comm_reply* ATTR_UNUSED(repinfo))
948 void worker_sighandler(int ATTR_UNUSED(sig), void* ATTR_UNUSED(arg))
953 struct outbound_entry* worker_send_query(uint8_t* ATTR_UNUSED(qname),
954 size_t ATTR_UNUSED(qnamelen), uint16_t ATTR_UNUSED(qtype),
955 uint16_t ATTR_UNUSED(qclass), uint16_t ATTR_UNUSED(flags),
956 int ATTR_UNUSED(dnssec), int ATTR_UNUSED(want_dnssec),
957 int ATTR_UNUSED(nocaps), struct sockaddr_storage* ATTR_UNUSED(addr),
958 socklen_t ATTR_UNUSED(addrlen), uint8_t* ATTR_UNUSED(zone),
959 size_t ATTR_UNUSED(zonelen), struct module_qstate* ATTR_UNUSED(q))
966 worker_alloc_cleanup(void* ATTR_UNUSED(arg))
971 void worker_stat_timer_cb(void* ATTR_UNUSED(arg))
976 void worker_probe_timer_cb(void* ATTR_UNUSED(arg))
981 void worker_start_accept(void* ATTR_UNUSED(arg))
986 void worker_stop_accept(void* ATTR_UNUSED(arg))
991 int order_lock_cmp(const void* ATTR_UNUSED(e1), const void* ATTR_UNUSED(e2))
998 codeline_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1004 int replay_var_compare(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1010 void remote_get_opt_ssl(char* ATTR_UNUSED(str), void* ATTR_UNUSED(arg))
1015 #ifdef UB_ON_WINDOWS
1017 worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev), void*
1023 wsvc_cron_cb(void* ATTR_UNUSED(arg))
1027 #endif /* UB_ON_WINDOWS */