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 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) {
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 cfg->outgoing_tcp_mss, &libworker_alloc_cleanup, w,
236 cfg->do_udp || cfg->udp_upstream_without_downstream, w->sslctx,
237 cfg->delay_close, NULL);
238 if(!w->is_bg || w->is_bg_thread) {
239 lock_basic_unlock(&ctx->cfglock);
246 w->env->mesh = mesh_create(&ctx->mods, w->env);
251 w->env->send_query = &libworker_send_query;
252 w->env->detach_subs = &mesh_detach_subs;
253 w->env->attach_sub = &mesh_attach_sub;
254 w->env->add_sub = &mesh_add_sub;
255 w->env->kill_sub = &mesh_state_delete;
256 w->env->detect_cycle = &mesh_detect_cycle;
257 comm_base_timept(w->base, &w->env->now, &w->env->now_tv);
261 struct libworker* libworker_create_event(struct ub_ctx* ctx,
262 struct ub_event_base* eb)
264 return libworker_setup(ctx, 0, eb);
267 /** handle cancel command for bg worker */
269 handle_cancel(struct libworker* w, uint8_t* buf, uint32_t len)
272 if(w->is_bg_thread) {
273 lock_basic_lock(&w->ctx->cfglock);
274 q = context_deserialize_cancel(w->ctx, buf, len);
275 lock_basic_unlock(&w->ctx->cfglock);
277 q = context_deserialize_cancel(w->ctx, buf, len);
280 /* probably simply lookup failed, i.e. the message had been
281 * processed and answered before the cancel arrived */
288 /** do control command coming into bg server */
290 libworker_do_cmd(struct libworker* w, uint8_t* msg, uint32_t len)
292 switch(context_serial_getcmd(msg, len)) {
294 case UB_LIBCMD_ANSWER:
295 log_err("unknown command for bg worker %d",
296 (int)context_serial_getcmd(msg, len));
297 /* and fall through to quit */
301 comm_base_exit(w->base);
303 case UB_LIBCMD_NEWQUERY:
304 handle_newq(w, msg, len);
306 case UB_LIBCMD_CANCEL:
307 handle_cancel(w, msg, len);
312 /** handle control command coming into server */
314 libworker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
315 uint8_t* msg, size_t len, int err, void* arg)
317 struct libworker* w = (struct libworker*)arg;
321 /* it is of no use to go on, exit */
322 comm_base_exit(w->base);
325 libworker_do_cmd(w, msg, len); /* also frees the buf */
328 /** the background thread func */
330 libworker_dobg(void* arg)
334 struct libworker* w = (struct libworker*)arg;
337 log_err("libunbound bg worker init failed, nomem");
341 log_thread_set(&w->thread_num);
342 #ifdef THREADS_DISABLED
345 /* close non-used parts of the pipes */
346 tube_close_write(ctx->qq_pipe);
347 tube_close_read(ctx->rr_pipe);
349 if(!tube_setup_bg_listen(ctx->qq_pipe, w->base,
350 libworker_handle_control_cmd, w)) {
351 log_err("libunbound bg worker init failed, no bglisten");
354 if(!tube_setup_bg_write(ctx->rr_pipe, w->base)) {
355 log_err("libunbound bg worker init failed, no bgwrite");
360 comm_base_dispatch(w->base);
364 tube_remove_bg_listen(w->ctx->qq_pipe);
365 tube_remove_bg_write(w->ctx->rr_pipe);
367 (void)tube_write_msg(ctx->rr_pipe, (uint8_t*)&m,
368 (uint32_t)sizeof(m), 0);
369 #ifdef THREADS_DISABLED
370 /* close pipes from forked process before exit */
371 tube_close_read(ctx->qq_pipe);
372 tube_close_write(ctx->rr_pipe);
377 int libworker_bg(struct ub_ctx* ctx)
380 /* fork or threadcreate */
381 lock_basic_lock(&ctx->cfglock);
383 lock_basic_unlock(&ctx->cfglock);
384 w = libworker_setup(ctx, 1, NULL);
385 if(!w) return UB_NOMEM;
387 #ifdef ENABLE_LOCK_CHECKS
388 w->thread_num = 1; /* for nicer DEBUG checklocks */
390 ub_thread_create(&ctx->bg_tid, libworker_dobg, w);
392 lock_basic_unlock(&ctx->cfglock);
394 /* no fork on windows */
396 #else /* HAVE_FORK */
397 switch((ctx->bg_pid=fork())) {
399 w = libworker_setup(ctx, 1, NULL);
400 if(!w) fatal_exit("out of memory");
401 /* close non-used parts of the pipes */
402 tube_close_write(ctx->qq_pipe);
403 tube_close_read(ctx->rr_pipe);
404 (void)libworker_dobg(w);
410 /* close non-used parts, so that the worker
411 * bgprocess gets 'pipe closed' when the
412 * main process exits */
413 tube_close_read(ctx->qq_pipe);
414 tube_close_write(ctx->rr_pipe);
417 #endif /* HAVE_FORK */
422 /** get msg reply struct (in temp region) */
423 static struct reply_info*
424 parse_reply(sldns_buffer* pkt, struct regional* region, struct query_info* qi)
426 struct reply_info* rep;
427 struct msg_parse* msg;
428 if(!(msg = regional_alloc(region, sizeof(*msg)))) {
431 memset(msg, 0, sizeof(*msg));
432 sldns_buffer_set_position(pkt, 0);
433 if(parse_packet(pkt, msg, region) != 0)
435 if(!parse_create_msg(pkt, msg, NULL, qi, &rep, region)) {
441 /** insert canonname */
443 fill_canon(struct ub_result* res, uint8_t* s)
447 res->canonname = strdup(buf);
448 return res->canonname != 0;
451 /** fill data into result */
453 fill_res(struct ub_result* res, struct ub_packed_rrset_key* answer,
454 uint8_t* finalcname, struct query_info* rq, struct reply_info* rep)
457 struct packed_rrset_data* data;
461 if(!fill_canon(res, finalcname))
462 return 0; /* out of memory */
464 if(rep->rrset_count != 0)
465 res->ttl = (int)rep->ttl;
466 res->data = (char**)calloc(1, sizeof(char*));
467 res->len = (int*)calloc(1, sizeof(int));
468 return (res->data && res->len);
470 data = (struct packed_rrset_data*)answer->entry.data;
471 if(query_dname_compare(rq->qname, answer->rk.dname) != 0) {
472 if(!fill_canon(res, answer->rk.dname))
473 return 0; /* out of memory */
474 } else res->canonname = NULL;
475 res->data = (char**)calloc(data->count+1, sizeof(char*));
476 res->len = (int*)calloc(data->count+1, sizeof(int));
477 if(!res->data || !res->len)
478 return 0; /* out of memory */
479 for(i=0; i<data->count; i++) {
480 /* remove rdlength from rdata */
481 res->len[i] = (int)(data->rr_len[i] - 2);
482 res->data[i] = memdup(data->rr_data[i]+2, (size_t)res->len[i]);
484 return 0; /* out of memory */
486 /* ttl for positive answers, from CNAME and answer RRs */
487 if(data->count != 0) {
489 res->ttl = (int)data->ttl;
490 for(j=0; j<rep->an_numrrsets; j++) {
491 struct packed_rrset_data* d =
492 (struct packed_rrset_data*)rep->rrsets[j]->
494 if((int)d->ttl < res->ttl)
495 res->ttl = (int)d->ttl;
498 /* ttl for negative answers */
499 if(data->count == 0 && rep->rrset_count != 0)
500 res->ttl = (int)rep->ttl;
501 res->data[data->count] = NULL;
502 res->len[data->count] = 0;
506 /** fill result from parsed message, on error fills servfail */
508 libworker_enter_result(struct ub_result* res, sldns_buffer* buf,
509 struct regional* temp, enum sec_status msg_security)
511 struct query_info rq;
512 struct reply_info* rep;
513 res->rcode = LDNS_RCODE_SERVFAIL;
514 rep = parse_reply(buf, temp, &rq);
516 log_err("cannot parse buf");
517 return; /* error parsing buf, or out of memory */
519 if(!fill_res(res, reply_find_answer_rrset(&rq, rep),
520 reply_find_final_cname_target(&rq, rep), &rq, rep))
521 return; /* out of memory */
522 /* rcode, havedata, nxdomain, secure, bogus */
523 res->rcode = (int)FLAGS_GET_RCODE(rep->flags);
524 if(res->data && res->data[0])
526 if(res->rcode == LDNS_RCODE_NXDOMAIN)
528 if(msg_security == sec_status_secure)
530 if(msg_security == sec_status_bogus)
534 /** fillup fg results */
536 libworker_fillup_fg(struct ctx_query* q, int rcode, sldns_buffer* buf,
537 enum sec_status s, char* why_bogus)
540 q->res->why_bogus = strdup(why_bogus);
542 q->res->rcode = rcode;
547 q->res->rcode = LDNS_RCODE_SERVFAIL;
549 q->msg = memdup(sldns_buffer_begin(buf), sldns_buffer_limit(buf));
550 q->msg_len = sldns_buffer_limit(buf);
552 return; /* the error is in the rcode */
555 /* canonname and results */
557 libworker_enter_result(q->res, buf, q->w->env->scratch, s);
561 libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
564 struct ctx_query* q = (struct ctx_query*)arg;
565 /* fg query is done; exit comm base */
566 comm_base_exit(q->w->base);
568 libworker_fillup_fg(q, rcode, buf, s, why_bogus);
571 /** setup qinfo and edns */
573 setup_qinfo_edns(struct libworker* w, struct ctx_query* q,
574 struct query_info* qinfo, struct edns_data* edns)
576 qinfo->qtype = (uint16_t)q->res->qtype;
577 qinfo->qclass = (uint16_t)q->res->qclass;
578 qinfo->local_alias = NULL;
579 qinfo->qname = sldns_str2wire_dname(q->res->qname, &qinfo->qname_len);
583 qinfo->local_alias = NULL;
584 edns->edns_present = 1;
586 edns->edns_version = 0;
587 edns->bits = EDNS_DO;
588 edns->opt_list = NULL;
589 if(sldns_buffer_capacity(w->back->udp_buff) < 65535)
590 edns->udp_size = (uint16_t)sldns_buffer_capacity(
592 else edns->udp_size = 65535;
596 int libworker_fg(struct ub_ctx* ctx, struct ctx_query* q)
598 struct libworker* w = libworker_setup(ctx, 0, NULL);
599 uint16_t qflags, qid;
600 struct query_info qinfo;
601 struct edns_data edns;
604 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
611 /* see if there is a fixed answer */
612 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
613 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
614 if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns,
615 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
616 NULL, 0, NULL, 0, NULL)) {
617 regional_free_all(w->env->scratch);
618 libworker_fillup_fg(q, LDNS_RCODE_NOERROR,
619 w->back->udp_buff, sec_status_insecure, NULL);
624 /* process new query */
625 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
626 w->back->udp_buff, qid, libworker_fg_done_cb, q)) {
633 comm_base_dispatch(w->base);
640 libworker_event_done_cb(void* arg, int rcode, sldns_buffer* buf,
641 enum sec_status s, char* why_bogus)
643 struct ctx_query* q = (struct ctx_query*)arg;
644 ub_event_callback_type cb = (ub_event_callback_type)q->cb;
645 void* cb_arg = q->cb_arg;
646 int cancelled = q->cancelled;
649 struct ub_ctx* ctx = q->w->ctx;
650 lock_basic_lock(&ctx->cfglock);
651 (void)rbtree_delete(&ctx->queries, q->node.key);
653 context_query_delete(q);
654 lock_basic_unlock(&ctx->cfglock);
659 if(s == sec_status_bogus)
661 else if(s == sec_status_secure)
663 (*cb)(cb_arg, rcode, (void*)sldns_buffer_begin(buf),
664 (int)sldns_buffer_limit(buf), sec, why_bogus);
668 int libworker_attach_mesh(struct ub_ctx* ctx, struct ctx_query* q,
671 struct libworker* w = ctx->event_worker;
672 uint16_t qflags, qid;
673 struct query_info qinfo;
674 struct edns_data edns;
677 if(!setup_qinfo_edns(w, q, &qinfo, &edns))
682 /* see if there is a fixed answer */
683 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
684 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
685 if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns,
686 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
687 NULL, 0, NULL, 0, NULL)) {
688 regional_free_all(w->env->scratch);
690 libworker_event_done_cb(q, LDNS_RCODE_NOERROR,
691 w->back->udp_buff, sec_status_insecure, NULL);
694 /* process new query */
696 *async_id = q->querynum;
697 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
698 w->back->udp_buff, qid, libworker_event_done_cb, q)) {
706 /** add result to the bg worker result queue */
708 add_bg_result(struct libworker* w, struct ctx_query* q, sldns_buffer* pkt,
709 int err, char* reason)
714 /* serialize and delete unneeded q */
715 if(w->is_bg_thread) {
716 lock_basic_lock(&w->ctx->cfglock);
718 q->res->why_bogus = strdup(reason);
720 q->msg_len = sldns_buffer_remaining(pkt);
721 q->msg = memdup(sldns_buffer_begin(pkt), q->msg_len);
723 msg = context_serialize_answer(q, UB_NOMEM,
725 else msg = context_serialize_answer(q, err,
727 } else msg = context_serialize_answer(q, err, NULL, &len);
728 lock_basic_unlock(&w->ctx->cfglock);
731 q->res->why_bogus = strdup(reason);
732 msg = context_serialize_answer(q, err, pkt, &len);
733 (void)rbtree_delete(&w->ctx->queries, q->node.key);
735 context_query_delete(q);
739 log_err("out of memory for async answer");
742 if(!tube_queue_item(w->ctx->rr_pipe, msg, len)) {
743 log_err("out of memory for async answer");
749 libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
752 struct ctx_query* q = (struct ctx_query*)arg;
754 if(q->cancelled || q->w->back->want_to_quit) {
755 if(q->w->is_bg_thread) {
757 struct ub_ctx* ctx = q->w->ctx;
758 lock_basic_lock(&ctx->cfglock);
759 (void)rbtree_delete(&ctx->queries, q->node.key);
761 context_query_delete(q);
762 lock_basic_unlock(&ctx->cfglock);
764 /* cancelled, do not give answer */
769 buf = q->w->env->scratch_buffer;
771 error_encode(buf, rcode, NULL, 0, BIT_RD, NULL);
773 add_bg_result(q->w, q, buf, UB_NOERROR, why_bogus);
777 /** handle new query command for bg worker */
779 handle_newq(struct libworker* w, uint8_t* buf, uint32_t len)
781 uint16_t qflags, qid;
782 struct query_info qinfo;
783 struct edns_data edns;
785 if(w->is_bg_thread) {
786 lock_basic_lock(&w->ctx->cfglock);
787 q = context_lookup_new_query(w->ctx, buf, len);
788 lock_basic_unlock(&w->ctx->cfglock);
790 q = context_deserialize_new_query(w->ctx, buf, len);
794 log_err("failed to deserialize newq");
797 if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
798 add_bg_result(w, q, NULL, UB_SYNTAX, NULL);
803 /* see if there is a fixed answer */
804 sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
805 sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
806 if(local_zones_answer(w->ctx->local_zones, w->env, &qinfo, &edns,
807 w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
808 NULL, 0, NULL, 0, NULL)) {
809 regional_free_all(w->env->scratch);
810 q->msg_security = sec_status_insecure;
811 add_bg_result(w, q, w->back->udp_buff, UB_NOERROR, NULL);
816 /* process new query */
817 if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns,
818 w->back->udp_buff, qid, libworker_bg_done_cb, q)) {
819 add_bg_result(w, q, NULL, UB_NOMEM, NULL);
824 void libworker_alloc_cleanup(void* arg)
826 struct libworker* w = (struct libworker*)arg;
827 slabhash_clear(&w->env->rrset_cache->table);
828 slabhash_clear(w->env->msg_cache);
831 struct outbound_entry* libworker_send_query(struct query_info* qinfo,
832 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
833 struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
834 size_t zonelen, int ssl_upstream, struct module_qstate* q)
836 struct libworker* w = (struct libworker*)q->env->worker;
837 struct outbound_entry* e = (struct outbound_entry*)regional_alloc(
838 q->region, sizeof(*e));
842 e->qsent = outnet_serviced_query(w->back, qinfo, flags, dnssec,
843 want_dnssec, nocaps, q->env->cfg->tcp_upstream, ssl_upstream,
844 addr, addrlen, zone, zonelen, q, libworker_handle_service_reply,
845 e, w->back->udp_buff, q->env);
853 libworker_handle_reply(struct comm_point* c, void* arg, int error,
854 struct comm_reply* reply_info)
856 struct module_qstate* q = (struct module_qstate*)arg;
857 struct libworker* lw = (struct libworker*)q->env->worker;
858 struct outbound_entry e;
863 mesh_report_reply(lw->env->mesh, &e, reply_info, error);
867 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
868 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
870 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
871 /* error becomes timeout for the module as if this reply
873 mesh_report_reply(lw->env->mesh, &e, reply_info,
877 mesh_report_reply(lw->env->mesh, &e, reply_info, NETEVENT_NOERROR);
882 libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
883 struct comm_reply* reply_info)
885 struct outbound_entry* e = (struct outbound_entry*)arg;
886 struct libworker* lw = (struct libworker*)e->qstate->env->worker;
889 mesh_report_reply(lw->env->mesh, e, reply_info, error);
893 if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
894 || LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
896 || LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
897 /* error becomes timeout for the module as if this reply
899 mesh_report_reply(lw->env->mesh, e, reply_info,
903 mesh_report_reply(lw->env->mesh, e, reply_info, NETEVENT_NOERROR);
907 /* --- fake callbacks for fptr_wlist to work --- */
908 void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube),
909 uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
910 int ATTR_UNUSED(error), void* ATTR_UNUSED(arg))
915 int worker_handle_request(struct comm_point* ATTR_UNUSED(c),
916 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
917 struct comm_reply* ATTR_UNUSED(repinfo))
923 int worker_handle_reply(struct comm_point* ATTR_UNUSED(c),
924 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
925 struct comm_reply* ATTR_UNUSED(reply_info))
931 int worker_handle_service_reply(struct comm_point* ATTR_UNUSED(c),
932 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
933 struct comm_reply* ATTR_UNUSED(reply_info))
939 int remote_accept_callback(struct comm_point* ATTR_UNUSED(c),
940 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
941 struct comm_reply* ATTR_UNUSED(repinfo))
947 int remote_control_callback(struct comm_point* ATTR_UNUSED(c),
948 void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
949 struct comm_reply* ATTR_UNUSED(repinfo))
955 void worker_sighandler(int ATTR_UNUSED(sig), void* ATTR_UNUSED(arg))
960 struct outbound_entry* worker_send_query(struct query_info* ATTR_UNUSED(qinfo),
961 uint16_t ATTR_UNUSED(flags), int ATTR_UNUSED(dnssec),
962 int ATTR_UNUSED(want_dnssec), int ATTR_UNUSED(nocaps),
963 struct sockaddr_storage* ATTR_UNUSED(addr), socklen_t ATTR_UNUSED(addrlen),
964 uint8_t* ATTR_UNUSED(zone), size_t ATTR_UNUSED(zonelen),
965 int ATTR_UNUSED(ssl_upstream), struct module_qstate* ATTR_UNUSED(q))
972 worker_alloc_cleanup(void* ATTR_UNUSED(arg))
977 void worker_stat_timer_cb(void* ATTR_UNUSED(arg))
982 void worker_probe_timer_cb(void* ATTR_UNUSED(arg))
987 void worker_start_accept(void* ATTR_UNUSED(arg))
992 void worker_stop_accept(void* ATTR_UNUSED(arg))
997 int order_lock_cmp(const void* ATTR_UNUSED(e1), const void* ATTR_UNUSED(e2))
1004 codeline_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1010 int replay_var_compare(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
1016 void remote_get_opt_ssl(char* ATTR_UNUSED(str), void* ATTR_UNUSED(arg))
1021 #ifdef UB_ON_WINDOWS
1023 worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev), void*
1029 wsvc_cron_cb(void* ATTR_UNUSED(arg))
1033 #endif /* UB_ON_WINDOWS */