Unbound: remove unbound from in-tree source

We'll instead use a git submodule to pull from our unbound repo.

1 files changed, 0 insertions, 1031 deletions

diff --git a/external/unbound/libunbound/libworker.c b/external/unbound/libunbound/libworker.c
deleted file mode 100644
index b42ba0bd8..000000000
--- a/external/unbound/libunbound/libworker.c
+++ /dev/null
@@ -1,1031 +0,0 @@
-/*
- * libunbound/worker.c - worker thread or process that resolves
- *
- * Copyright (c) 2007, NLnet Labs. All rights reserved.
- *
- * This software is open source.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 
- * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 
- * Neither the name of the NLNET LABS nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/**
- * \file
- *
- * This file contains the worker process or thread that performs
- * the DNS resolving and validation. The worker is called by a procedure
- * and if in the background continues until exit, if in the foreground
- * returns from the procedure when done.
- */
-#include "config.h"
-#ifdef HAVE_SSL
-#include <openssl/ssl.h>
-#endif
-#include "libunbound/libworker.h"
-#include "libunbound/context.h"
-#include "libunbound/unbound.h"
-#include "libunbound/worker.h"
-#include "libunbound/unbound-event.h"
-#include "services/outside_network.h"
-#include "services/mesh.h"
-#include "services/localzone.h"
-#include "services/cache/rrset.h"
-#include "services/outbound_list.h"
-#include "util/fptr_wlist.h"
-#include "util/module.h"
-#include "util/regional.h"
-#include "util/random.h"
-#include "util/config_file.h"
-#include "util/netevent.h"
-#include "util/storage/lookup3.h"
-#include "util/storage/slabhash.h"
-#include "util/net_help.h"
-#include "util/data/dname.h"
-#include "util/data/msgreply.h"
-#include "util/data/msgencode.h"
-#include "util/tube.h"
-#include "iterator/iter_fwd.h"
-#include "iterator/iter_hints.h"
-#include "sldns/sbuffer.h"
-#include "sldns/str2wire.h"
-
-/** handle new query command for bg worker */
-static void handle_newq(struct libworker* w, uint8_t* buf, uint32_t len);
-
-/** delete libworker env */
-static void
-libworker_delete_env(struct libworker* w)
-{
-	if(w->env) {
-		outside_network_quit_prepare(w->back);
-		mesh_delete(w->env->mesh);
-		context_release_alloc(w->ctx, w->env->alloc, 
-			!w->is_bg || w->is_bg_thread);
-		sldns_buffer_free(w->env->scratch_buffer);
-		regional_destroy(w->env->scratch);
-		forwards_delete(w->env->fwds);
-		hints_delete(w->env->hints);
-		ub_randfree(w->env->rnd);
-		free(w->env);
-	}
-#ifdef HAVE_SSL
-	SSL_CTX_free(w->sslctx);
-#endif
-	outside_network_delete(w->back);
-}
-
-/** delete libworker struct */
-static void
-libworker_delete(struct libworker* w)
-{
-	if(!w) return;
-	libworker_delete_env(w);
-	comm_base_delete(w->base);
-	free(w);
-}
-
-void
-libworker_delete_event(struct libworker* w)
-{
-	if(!w) return;
-	libworker_delete_env(w);
-	comm_base_delete_no_base(w->base);
-	free(w);
-}
-
-/** setup fresh libworker struct */
-static struct libworker*
-libworker_setup(struct ub_ctx* ctx, int is_bg, struct ub_event_base* eb)
-{
-	unsigned int seed;
-	struct libworker* w = (struct libworker*)calloc(1, sizeof(*w));
-	struct config_file* cfg = ctx->env->cfg;
-	int* ports;
-	int numports;
-	if(!w) return NULL;
-	w->is_bg = is_bg;
-	w->ctx = ctx;
-	w->env = (struct module_env*)malloc(sizeof(*w->env));
-	if(!w->env) {
-		free(w);
-		return NULL;
-	}
-	*w->env = *ctx->env;
-	w->env->alloc = context_obtain_alloc(ctx, !w->is_bg || w->is_bg_thread);
-	if(!w->env->alloc) {
-		libworker_delete(w);
-		return NULL;
-	}
-	w->thread_num = w->env->alloc->thread_num;
-	alloc_set_id_cleanup(w->env->alloc, &libworker_alloc_cleanup, w);
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_lock(&ctx->cfglock);
-	}
-	w->env->scratch = regional_create_custom(cfg->msg_buffer_size);
-	w->env->scratch_buffer = sldns_buffer_new(cfg->msg_buffer_size);
-	w->env->fwds = forwards_create();
-	if(w->env->fwds && !forwards_apply_cfg(w->env->fwds, cfg)) { 
-		forwards_delete(w->env->fwds);
-		w->env->fwds = NULL;
-	}
-	w->env->hints = hints_create();
-	if(w->env->hints && !hints_apply_cfg(w->env->hints, cfg)) { 
-		hints_delete(w->env->hints);
-		w->env->hints = NULL;
-	}
-	if(cfg->ssl_upstream) {
-		w->sslctx = connect_sslctx_create(NULL, NULL, NULL);
-		if(!w->sslctx) {
-			/* to make the setup fail after unlock */
-			hints_delete(w->env->hints);
-			w->env->hints = NULL;
-		}
-	}
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_unlock(&ctx->cfglock);
-	}
-	if(!w->env->scratch || !w->env->scratch_buffer || !w->env->fwds ||
-		!w->env->hints) {
-		libworker_delete(w);
-		return NULL;
-	}
-	w->env->worker = (struct worker*)w;
-	w->env->probe_timer = NULL;
-	seed = (unsigned int)time(NULL) ^ (unsigned int)getpid() ^
-		(((unsigned int)w->thread_num)<<17);
-	seed ^= (unsigned int)w->env->alloc->next_id;
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_lock(&ctx->cfglock);
-	}
-	if(!(w->env->rnd = ub_initstate(seed, ctx->seed_rnd))) {
-		if(!w->is_bg || w->is_bg_thread) {
-			lock_basic_unlock(&ctx->cfglock);
-		}
-		seed = 0;
-		libworker_delete(w);
-		return NULL;
-	}
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_unlock(&ctx->cfglock);
-	}
-	if(1) {
-		/* primitive lockout for threading: if it overwrites another
-		 * thread it is like wiping the cache (which is likely empty
-		 * at the start) */
-		/* note we are holding the ctx lock in normal threaded
-		 * cases so that is solved properly, it is only for many ctx
-		 * in different threads that this may clash */
-		static int done_raninit = 0;
-		if(!done_raninit) {
-			done_raninit = 1;
-			hash_set_raninit((uint32_t)ub_random(w->env->rnd));
-		}
-	}
-	seed = 0;
-
-	if(eb)
-		w->base = comm_base_create_event(eb);
-	else	w->base = comm_base_create(0);
-	if(!w->base) {
-		libworker_delete(w);
-		return NULL;
-	}
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_lock(&ctx->cfglock);
-	}
-	numports = cfg_condense_ports(cfg, &ports);
-	if(numports == 0) {
-		int locked = !w->is_bg || w->is_bg_thread;
-		libworker_delete(w);
-		if(locked) {
-			lock_basic_unlock(&ctx->cfglock);
-		}
-		return NULL;
-	}
-	w->back = outside_network_create(w->base, cfg->msg_buffer_size,
-		(size_t)cfg->outgoing_num_ports, cfg->out_ifs,
-		cfg->num_out_ifs, cfg->do_ip4, cfg->do_ip6, 
-		cfg->do_tcp?cfg->outgoing_num_tcp:0,
-		w->env->infra_cache, w->env->rnd, cfg->use_caps_bits_for_id,
-		ports, numports, cfg->unwanted_threshold,
-		cfg->outgoing_tcp_mss,
-		&libworker_alloc_cleanup, w, cfg->do_udp, w->sslctx,
-		cfg->delay_close, NULL);
-	if(!w->is_bg || w->is_bg_thread) {
-		lock_basic_unlock(&ctx->cfglock);
-	}
-	free(ports);
-	if(!w->back) {
-		libworker_delete(w);
-		return NULL;
-	}
-	w->env->mesh = mesh_create(&ctx->mods, w->env);
-	if(!w->env->mesh) {
-		libworker_delete(w);
-		return NULL;
-	}
-	w->env->send_query = &libworker_send_query;
-	w->env->detach_subs = &mesh_detach_subs;
-	w->env->attach_sub = &mesh_attach_sub;
-	w->env->kill_sub = &mesh_state_delete;
-	w->env->detect_cycle = &mesh_detect_cycle;
-	comm_base_timept(w->base, &w->env->now, &w->env->now_tv);
-	return w;
-}
-
-struct libworker* libworker_create_event(struct ub_ctx* ctx,
-	struct ub_event_base* eb)
-{
-	return libworker_setup(ctx, 0, eb);
-}
-
-/** handle cancel command for bg worker */
-static void
-handle_cancel(struct libworker* w, uint8_t* buf, uint32_t len)
-{
-	struct ctx_query* q;
-	if(w->is_bg_thread) {
-		lock_basic_lock(&w->ctx->cfglock);
-		q = context_deserialize_cancel(w->ctx, buf, len);
-		lock_basic_unlock(&w->ctx->cfglock);
-	} else {
-		q = context_deserialize_cancel(w->ctx, buf, len);
-	}
-	if(!q) {
-		/* probably simply lookup failed, i.e. the message had been
-		 * processed and answered before the cancel arrived */
-		return;
-	}
-	q->cancelled = 1;
-	free(buf);
-}
-
-/** do control command coming into bg server */
-static void
-libworker_do_cmd(struct libworker* w, uint8_t* msg, uint32_t len)
-{
-	switch(context_serial_getcmd(msg, len)) {
-		default:
-		case UB_LIBCMD_ANSWER:
-			log_err("unknown command for bg worker %d", 
-				(int)context_serial_getcmd(msg, len));
-			/* and fall through to quit */
-		case UB_LIBCMD_QUIT:
-			free(msg);
-			comm_base_exit(w->base);
-			break;
-		case UB_LIBCMD_NEWQUERY:
-			handle_newq(w, msg, len);
-			break;
-		case UB_LIBCMD_CANCEL:
-			handle_cancel(w, msg, len);
-			break;
-	}
-}
-
-/** handle control command coming into server */
-void 
-libworker_handle_control_cmd(struct tube* ATTR_UNUSED(tube), 
-	uint8_t* msg, size_t len, int err, void* arg)
-{
-	struct libworker* w = (struct libworker*)arg;
-
-	if(err != 0) {
-		free(msg);
-		/* it is of no use to go on, exit */
-		comm_base_exit(w->base);
-		return;
-	}
-	libworker_do_cmd(w, msg, len); /* also frees the buf */
-}
-
-/** the background thread func */
-static void*
-libworker_dobg(void* arg)
-{
-	/* setup */
-	uint32_t m;
-	struct libworker* w = (struct libworker*)arg;
-	struct ub_ctx* ctx;
-	if(!w) {
-		log_err("libunbound bg worker init failed, nomem");
-		return NULL;
-	}
-	ctx = w->ctx;
-	log_thread_set(&w->thread_num);
-#ifdef THREADS_DISABLED
-	/* we are forked */
-	w->is_bg_thread = 0;
-	/* close non-used parts of the pipes */
-	tube_close_write(ctx->qq_pipe);
-	tube_close_read(ctx->rr_pipe);
-#endif
-	if(!tube_setup_bg_listen(ctx->qq_pipe, w->base, 
-		libworker_handle_control_cmd, w)) {
-		log_err("libunbound bg worker init failed, no bglisten");
-		return NULL;
-	}
-	if(!tube_setup_bg_write(ctx->rr_pipe, w->base)) {
-		log_err("libunbound bg worker init failed, no bgwrite");
-		return NULL;
-	}
-
-	/* do the work */
-	comm_base_dispatch(w->base);
-
-	/* cleanup */
-	m = UB_LIBCMD_QUIT;
-	tube_remove_bg_listen(w->ctx->qq_pipe);
-	tube_remove_bg_write(w->ctx->rr_pipe);
-	libworker_delete(w);
-	(void)tube_write_msg(ctx->rr_pipe, (uint8_t*)&m, 
-		(uint32_t)sizeof(m), 0);
-#ifdef THREADS_DISABLED
-	/* close pipes from forked process before exit */
-	tube_close_read(ctx->qq_pipe);
-	tube_close_write(ctx->rr_pipe);
-#endif
-	return NULL;
-}
-
-int libworker_bg(struct ub_ctx* ctx)
-{
-	struct libworker* w;
-	/* fork or threadcreate */
-	lock_basic_lock(&ctx->cfglock);
-	if(ctx->dothread) {
-		lock_basic_unlock(&ctx->cfglock);
-		w = libworker_setup(ctx, 1, NULL);
-		if(!w) return UB_NOMEM;
-		w->is_bg_thread = 1;
-#ifdef ENABLE_LOCK_CHECKS
-		w->thread_num = 1; /* for nicer DEBUG checklocks */
-#endif
-		ub_thread_create(&ctx->bg_tid, libworker_dobg, w);
-	} else {
-		lock_basic_unlock(&ctx->cfglock);
-#ifndef HAVE_FORK
-		/* no fork on windows */
-		return UB_FORKFAIL;
-#else /* HAVE_FORK */
-		switch((ctx->bg_pid=fork())) {
-			case 0:
-				w = libworker_setup(ctx, 1, NULL);
-				if(!w) fatal_exit("out of memory");
-				/* close non-used parts of the pipes */
-				tube_close_write(ctx->qq_pipe);
-				tube_close_read(ctx->rr_pipe);
-				(void)libworker_dobg(w);
-				exit(0);
-				break;
-			case -1:
-				return UB_FORKFAIL;
-			default:
-				/* close non-used parts, so that the worker
-				 * bgprocess gets 'pipe closed' when the
-				 * main process exits */
-				tube_close_read(ctx->qq_pipe);
-				tube_close_write(ctx->rr_pipe);
-				break;
-		}
-#endif /* HAVE_FORK */ 
-	}
-	return UB_NOERROR;
-}
-
-/** get msg reply struct (in temp region) */
-static struct reply_info*
-parse_reply(sldns_buffer* pkt, struct regional* region, struct query_info* qi)
-{
-	struct reply_info* rep;
-	struct msg_parse* msg;
-	if(!(msg = regional_alloc(region, sizeof(*msg)))) {
-		return NULL;
-	}
-	memset(msg, 0, sizeof(*msg));
-	sldns_buffer_set_position(pkt, 0);
-	if(parse_packet(pkt, msg, region) != 0)
-		return 0;
-	if(!parse_create_msg(pkt, msg, NULL, qi, &rep, region)) {
-		return 0;
-	}
-	return rep;
-}
-
-/** insert canonname */
-static int
-fill_canon(struct ub_result* res, uint8_t* s)
-{
-	char buf[255+2];
-	dname_str(s, buf);
-	res->canonname = strdup(buf);
-	return res->canonname != 0;
-}
-
-/** fill data into result */
-static int
-fill_res(struct ub_result* res, struct ub_packed_rrset_key* answer,
-	uint8_t* finalcname, struct query_info* rq, struct reply_info* rep)
-{
-	size_t i;
-	struct packed_rrset_data* data;
-	res->ttl = 0;
-	if(!answer) {
-		if(finalcname) {
-			if(!fill_canon(res, finalcname))
-				return 0; /* out of memory */
-		}
-		if(rep->rrset_count != 0)
-			res->ttl = (int)rep->ttl;
-		res->data = (char**)calloc(1, sizeof(char*));
-		res->len = (int*)calloc(1, sizeof(int));
-		return (res->data && res->len);
-	}
-	data = (struct packed_rrset_data*)answer->entry.data;
-	if(query_dname_compare(rq->qname, answer->rk.dname) != 0) {
-		if(!fill_canon(res, answer->rk.dname))
-			return 0; /* out of memory */
-	} else	res->canonname = NULL;
-	res->data = (char**)calloc(data->count+1, sizeof(char*));
-	res->len = (int*)calloc(data->count+1, sizeof(int));
-	if(!res->data || !res->len)
-		return 0; /* out of memory */
-	for(i=0; i<data->count; i++) {
-		/* remove rdlength from rdata */
-		res->len[i] = (int)(data->rr_len[i] - 2);
-		res->data[i] = memdup(data->rr_data[i]+2, (size_t)res->len[i]);
-		if(!res->data[i])
-			return 0; /* out of memory */
-	}
-	/* ttl for positive answers, from CNAME and answer RRs */
-	if(data->count != 0) {
-		size_t j;
-		res->ttl = (int)data->ttl;
-		for(j=0; j<rep->an_numrrsets; j++) {
-			struct packed_rrset_data* d =
-				(struct packed_rrset_data*)rep->rrsets[j]->
-				entry.data;
-			if((int)d->ttl < res->ttl)
-				res->ttl = (int)d->ttl;
-		}
-	}
-	/* ttl for negative answers */
-	if(data->count == 0 && rep->rrset_count != 0)
-		res->ttl = (int)rep->ttl;
-	res->data[data->count] = NULL;
-	res->len[data->count] = 0;
-	return 1;
-}
-
-/** fill result from parsed message, on error fills servfail */
-void
-libworker_enter_result(struct ub_result* res, sldns_buffer* buf,
-	struct regional* temp, enum sec_status msg_security)
-{
-	struct query_info rq;
-	struct reply_info* rep;
-	res->rcode = LDNS_RCODE_SERVFAIL;
-	rep = parse_reply(buf, temp, &rq);
-	if(!rep) {
-		log_err("cannot parse buf");
-		return; /* error parsing buf, or out of memory */
-	}
-	if(!fill_res(res, reply_find_answer_rrset(&rq, rep), 
-		reply_find_final_cname_target(&rq, rep), &rq, rep))
-		return; /* out of memory */
-	/* rcode, havedata, nxdomain, secure, bogus */
-	res->rcode = (int)FLAGS_GET_RCODE(rep->flags);
-	if(res->data && res->data[0])
-		res->havedata = 1;
-	if(res->rcode == LDNS_RCODE_NXDOMAIN)
-		res->nxdomain = 1;
-	if(msg_security == sec_status_secure)
-		res->secure = 1;
-	if(msg_security == sec_status_bogus)
-		res->bogus = 1;
-}
-
-/** fillup fg results */
-static void
-libworker_fillup_fg(struct ctx_query* q, int rcode, sldns_buffer* buf, 
-	enum sec_status s, char* why_bogus)
-{
-	if(why_bogus)
-		q->res->why_bogus = strdup(why_bogus);
-	if(rcode != 0) {
-		q->res->rcode = rcode;
-		q->msg_security = s;
-		return;
-	}
-
-	q->res->rcode = LDNS_RCODE_SERVFAIL;
-	q->msg_security = 0;
-	q->msg = memdup(sldns_buffer_begin(buf), sldns_buffer_limit(buf));
-	q->msg_len = sldns_buffer_limit(buf);
-	if(!q->msg) {
-		return; /* the error is in the rcode */
-	}
-
-	/* canonname and results */
-	q->msg_security = s;
-	libworker_enter_result(q->res, buf, q->w->env->scratch, s);
-}
-
-void
-libworker_fg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
-	char* why_bogus)
-{
-	struct ctx_query* q = (struct ctx_query*)arg;
-	/* fg query is done; exit comm base */
-	comm_base_exit(q->w->base);
-
-	libworker_fillup_fg(q, rcode, buf, s, why_bogus);
-}
-
-/** setup qinfo and edns */
-static int
-setup_qinfo_edns(struct libworker* w, struct ctx_query* q, 
-	struct query_info* qinfo, struct edns_data* edns)
-{
-	qinfo->qtype = (uint16_t)q->res->qtype;
-	qinfo->qclass = (uint16_t)q->res->qclass;
-	qinfo->local_alias = NULL;
-	qinfo->qname = sldns_str2wire_dname(q->res->qname, &qinfo->qname_len);
-	if(!qinfo->qname) {
-		return 0;
-	}
-	qinfo->local_alias = NULL;
-	edns->edns_present = 1;
-	edns->ext_rcode = 0;
-	edns->edns_version = 0;
-	edns->bits = EDNS_DO;
-	edns->opt_list = NULL;
-	if(sldns_buffer_capacity(w->back->udp_buff) < 65535)
-		edns->udp_size = (uint16_t)sldns_buffer_capacity(
-			w->back->udp_buff);
-	else	edns->udp_size = 65535;
-	return 1;
-}
-
-int libworker_fg(struct ub_ctx* ctx, struct ctx_query* q)
-{
-	struct libworker* w = libworker_setup(ctx, 0, NULL);
-	uint16_t qflags, qid;
-	struct query_info qinfo;
-	struct edns_data edns;
-	if(!w)
-		return UB_INITFAIL;
-	if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
-		libworker_delete(w);
-		return UB_SYNTAX;
-	}
-	qid = 0;
-	qflags = BIT_RD;
-	q->w = w;
-	/* see if there is a fixed answer */
-	sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
-	sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
-	if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns, 
-		w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
-		NULL, 0, NULL, 0, NULL)) {
-		regional_free_all(w->env->scratch);
-		libworker_fillup_fg(q, LDNS_RCODE_NOERROR, 
-			w->back->udp_buff, sec_status_insecure, NULL);
-		libworker_delete(w);
-		free(qinfo.qname);
-		return UB_NOERROR;
-	}
-	/* process new query */
-	if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns, 
-		w->back->udp_buff, qid, libworker_fg_done_cb, q)) {
-		free(qinfo.qname);
-		return UB_NOMEM;
-	}
-	free(qinfo.qname);
-
-	/* wait for reply */
-	comm_base_dispatch(w->base);
-
-	libworker_delete(w);
-	return UB_NOERROR;
-}
-
-void
-libworker_event_done_cb(void* arg, int rcode, sldns_buffer* buf,
-	enum sec_status s, char* why_bogus)
-{
-	struct ctx_query* q = (struct ctx_query*)arg;
-	ub_event_callback_type cb = (ub_event_callback_type)q->cb;
-	void* cb_arg = q->cb_arg;
-	int cancelled = q->cancelled;
-
-	/* delete it now */
-	struct ub_ctx* ctx = q->w->ctx;
-	lock_basic_lock(&ctx->cfglock);
-	(void)rbtree_delete(&ctx->queries, q->node.key);
-	ctx->num_async--;
-	context_query_delete(q);
-	lock_basic_unlock(&ctx->cfglock);
-
-	if(!cancelled) {
-		/* call callback */
-		int sec = 0;
-		if(s == sec_status_bogus)
-			sec = 1;
-		else if(s == sec_status_secure)
-			sec = 2;
-		(*cb)(cb_arg, rcode, (void*)sldns_buffer_begin(buf),
-			(int)sldns_buffer_limit(buf), sec, why_bogus);
-	}
-}
-
-int libworker_attach_mesh(struct ub_ctx* ctx, struct ctx_query* q,
-	int* async_id)
-{
-	struct libworker* w = ctx->event_worker;
-	uint16_t qflags, qid;
-	struct query_info qinfo;
-	struct edns_data edns;
-	if(!w)
-		return UB_INITFAIL;
-	if(!setup_qinfo_edns(w, q, &qinfo, &edns))
-		return UB_SYNTAX;
-	qid = 0;
-	qflags = BIT_RD;
-	q->w = w;
-	/* see if there is a fixed answer */
-	sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
-	sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
-	if(local_zones_answer(ctx->local_zones, w->env, &qinfo, &edns, 
-		w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
-		NULL, 0, NULL, 0, NULL)) {
-		regional_free_all(w->env->scratch);
-		free(qinfo.qname);
-		libworker_event_done_cb(q, LDNS_RCODE_NOERROR,
-			w->back->udp_buff, sec_status_insecure, NULL);
-		return UB_NOERROR;
-	}
-	/* process new query */
-	if(async_id)
-		*async_id = q->querynum;
-	if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns, 
-		w->back->udp_buff, qid, libworker_event_done_cb, q)) {
-		free(qinfo.qname);
-		return UB_NOMEM;
-	}
-	free(qinfo.qname);
-	return UB_NOERROR;
-}
-
-/** add result to the bg worker result queue */
-static void
-add_bg_result(struct libworker* w, struct ctx_query* q, sldns_buffer* pkt, 
-	int err, char* reason)
-{
-	uint8_t* msg = NULL;
-	uint32_t len = 0;
-
-	/* serialize and delete unneeded q */
-	if(w->is_bg_thread) {
-		lock_basic_lock(&w->ctx->cfglock);
-		if(reason)
-			q->res->why_bogus = strdup(reason);
-		if(pkt) {
-			q->msg_len = sldns_buffer_remaining(pkt);
-			q->msg = memdup(sldns_buffer_begin(pkt), q->msg_len);
-			if(!q->msg)
-				msg = context_serialize_answer(q, UB_NOMEM, 
-				NULL, &len);
-			else	msg = context_serialize_answer(q, err, 
-				NULL, &len);
-		} else msg = context_serialize_answer(q, err, NULL, &len);
-		lock_basic_unlock(&w->ctx->cfglock);
-	} else {
-		if(reason)
-			q->res->why_bogus = strdup(reason);
-		msg = context_serialize_answer(q, err, pkt, &len);
-		(void)rbtree_delete(&w->ctx->queries, q->node.key);
-		w->ctx->num_async--;
-		context_query_delete(q);
-	}
-
-	if(!msg) {
-		log_err("out of memory for async answer");
-		return;
-	}
-	if(!tube_queue_item(w->ctx->rr_pipe, msg, len)) {
-		log_err("out of memory for async answer");
-		return;
-	}
-}
-
-void
-libworker_bg_done_cb(void* arg, int rcode, sldns_buffer* buf, enum sec_status s,
-	char* why_bogus)
-{
-	struct ctx_query* q = (struct ctx_query*)arg;
-
-	if(q->cancelled) {
-		if(q->w->is_bg_thread) {
-			/* delete it now */
-			struct ub_ctx* ctx = q->w->ctx;
-			lock_basic_lock(&ctx->cfglock);
-			(void)rbtree_delete(&ctx->queries, q->node.key);
-			ctx->num_async--;
-			context_query_delete(q);
-			lock_basic_unlock(&ctx->cfglock);
-		}
-		/* cancelled, do not give answer */
-		return;
-	}
-	q->msg_security = s;
-	if(!buf)
-		buf = q->w->env->scratch_buffer;
-	if(rcode != 0) {
-		error_encode(buf, rcode, NULL, 0, BIT_RD, NULL);
-	}
-	add_bg_result(q->w, q, buf, UB_NOERROR, why_bogus);
-}
-
-
-/** handle new query command for bg worker */
-static void
-handle_newq(struct libworker* w, uint8_t* buf, uint32_t len)
-{
-	uint16_t qflags, qid;
-	struct query_info qinfo;
-	struct edns_data edns;
-	struct ctx_query* q;
-	if(w->is_bg_thread) {
-		lock_basic_lock(&w->ctx->cfglock);
-		q = context_lookup_new_query(w->ctx, buf, len);
-		lock_basic_unlock(&w->ctx->cfglock);
-	} else {
-		q = context_deserialize_new_query(w->ctx, buf, len);
-	}
-	free(buf);
-	if(!q) {
-		log_err("failed to deserialize newq");
-		return;
-	}
-	if(!setup_qinfo_edns(w, q, &qinfo, &edns)) {
-		add_bg_result(w, q, NULL, UB_SYNTAX, NULL);
-		return;
-	}
-	qid = 0;
-	qflags = BIT_RD;
-	/* see if there is a fixed answer */
-	sldns_buffer_write_u16_at(w->back->udp_buff, 0, qid);
-	sldns_buffer_write_u16_at(w->back->udp_buff, 2, qflags);
-	if(local_zones_answer(w->ctx->local_zones, w->env, &qinfo, &edns, 
-		w->back->udp_buff, w->env->scratch, NULL, NULL, 0, NULL, 0,
-		NULL, 0, NULL, 0, NULL)) {
-		regional_free_all(w->env->scratch);
-		q->msg_security = sec_status_insecure;
-		add_bg_result(w, q, w->back->udp_buff, UB_NOERROR, NULL);
-		free(qinfo.qname);
-		return;
-	}
-	q->w = w;
-	/* process new query */
-	if(!mesh_new_callback(w->env->mesh, &qinfo, qflags, &edns, 
-		w->back->udp_buff, qid, libworker_bg_done_cb, q)) {
-		add_bg_result(w, q, NULL, UB_NOMEM, NULL);
-	}
-	free(qinfo.qname);
-}
-
-void libworker_alloc_cleanup(void* arg)
-{
-	struct libworker* w = (struct libworker*)arg;
-	slabhash_clear(&w->env->rrset_cache->table);
-        slabhash_clear(w->env->msg_cache);
-}
-
-struct outbound_entry* libworker_send_query(struct query_info* qinfo,
-	uint16_t flags, int dnssec, int want_dnssec, int nocaps,
-	struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
-	size_t zonelen, int ssl_upstream, struct module_qstate* q)
-{
-	struct libworker* w = (struct libworker*)q->env->worker;
-	struct outbound_entry* e = (struct outbound_entry*)regional_alloc(
-		q->region, sizeof(*e));
-	if(!e)
-		return NULL;
-	e->qstate = q;
-	e->qsent = outnet_serviced_query(w->back, qinfo, flags, dnssec,
-		want_dnssec, nocaps, q->env->cfg->tcp_upstream, ssl_upstream,
-		addr, addrlen, zone, zonelen, q, libworker_handle_service_reply,
-		e, w->back->udp_buff, q->env);
-	if(!e->qsent) {
-		return NULL;
-	}
-	return e;
-}
-
-int 
-libworker_handle_reply(struct comm_point* c, void* arg, int error,
-        struct comm_reply* reply_info)
-{
-	struct module_qstate* q = (struct module_qstate*)arg;
-	struct libworker* lw = (struct libworker*)q->env->worker;
-	struct outbound_entry e;
-	e.qstate = q;
-	e.qsent = NULL;
-
-	if(error != 0) {
-		mesh_report_reply(lw->env->mesh, &e, reply_info, error);
-		return 0;
-	}
-	/* sanity check. */
-	if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
-		|| LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
-			LDNS_PACKET_QUERY
-		|| LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
-		/* error becomes timeout for the module as if this reply
-		 * never arrived. */
-		mesh_report_reply(lw->env->mesh, &e, reply_info, 
-			NETEVENT_TIMEOUT);
-		return 0;
-	}
-	mesh_report_reply(lw->env->mesh, &e, reply_info, NETEVENT_NOERROR);
-	return 0;
-}
-
-int 
-libworker_handle_service_reply(struct comm_point* c, void* arg, int error,
-        struct comm_reply* reply_info)
-{
-	struct outbound_entry* e = (struct outbound_entry*)arg;
-	struct libworker* lw = (struct libworker*)e->qstate->env->worker;
-
-	if(error != 0) {
-		mesh_report_reply(lw->env->mesh, e, reply_info, error);
-		return 0;
-	}
-	/* sanity check. */
-	if(!LDNS_QR_WIRE(sldns_buffer_begin(c->buffer))
-		|| LDNS_OPCODE_WIRE(sldns_buffer_begin(c->buffer)) !=
-			LDNS_PACKET_QUERY
-		|| LDNS_QDCOUNT(sldns_buffer_begin(c->buffer)) > 1) {
-		/* error becomes timeout for the module as if this reply
-		 * never arrived. */
-		mesh_report_reply(lw->env->mesh, e, reply_info, 
-			NETEVENT_TIMEOUT);
-		return 0;
-	}
-	mesh_report_reply(lw->env->mesh,  e, reply_info, NETEVENT_NOERROR);
-	return 0;
-}
-
-/* --- fake callbacks for fptr_wlist to work --- */
-void worker_handle_control_cmd(struct tube* ATTR_UNUSED(tube), 
-	uint8_t* ATTR_UNUSED(buffer), size_t ATTR_UNUSED(len),
-	int ATTR_UNUSED(error), void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-int worker_handle_request(struct comm_point* ATTR_UNUSED(c), 
-	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
-        struct comm_reply* ATTR_UNUSED(repinfo))
-{
-	log_assert(0);
-	return 0;
-}
-
-int worker_handle_reply(struct comm_point* ATTR_UNUSED(c), 
-	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
-        struct comm_reply* ATTR_UNUSED(reply_info))
-{
-	log_assert(0);
-	return 0;
-}
-
-int worker_handle_service_reply(struct comm_point* ATTR_UNUSED(c), 
-	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
-        struct comm_reply* ATTR_UNUSED(reply_info))
-{
-	log_assert(0);
-	return 0;
-}
-
-int remote_accept_callback(struct comm_point* ATTR_UNUSED(c), 
-	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
-        struct comm_reply* ATTR_UNUSED(repinfo))
-{
-	log_assert(0);
-	return 0;
-}
-
-int remote_control_callback(struct comm_point* ATTR_UNUSED(c), 
-	void* ATTR_UNUSED(arg), int ATTR_UNUSED(error),
-        struct comm_reply* ATTR_UNUSED(repinfo))
-{
-	log_assert(0);
-	return 0;
-}
-
-void worker_sighandler(int ATTR_UNUSED(sig), void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-struct outbound_entry* worker_send_query(struct query_info* ATTR_UNUSED(qinfo),
-	uint16_t ATTR_UNUSED(flags), int ATTR_UNUSED(dnssec),
-	int ATTR_UNUSED(want_dnssec), int ATTR_UNUSED(nocaps),
-	struct sockaddr_storage* ATTR_UNUSED(addr), socklen_t ATTR_UNUSED(addrlen),
-	uint8_t* ATTR_UNUSED(zone), size_t ATTR_UNUSED(zonelen),
-	int ATTR_UNUSED(ssl_upstream), struct module_qstate* ATTR_UNUSED(q))
-{
-	log_assert(0);
-	return 0;
-}
-
-void 
-worker_alloc_cleanup(void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-void worker_stat_timer_cb(void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-void worker_probe_timer_cb(void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-void worker_start_accept(void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-void worker_stop_accept(void* ATTR_UNUSED(arg))
-{
-	log_assert(0);
-}
-
-int order_lock_cmp(const void* ATTR_UNUSED(e1), const void* ATTR_UNUSED(e2))
-{
-	log_assert(0);
-	return 0;
-}
-
-int
-codeline_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
-{
-	log_assert(0);
-	return 0;
-}
-
-int replay_var_compare(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
-{
-        log_assert(0);
-        return 0;
-}
-
-void remote_get_opt_ssl(char* ATTR_UNUSED(str), void* ATTR_UNUSED(arg))
-{
-        log_assert(0);
-}
-
-#ifdef UB_ON_WINDOWS
-void
-worker_win_stop_cb(int ATTR_UNUSED(fd), short ATTR_UNUSED(ev), void* 
-        ATTR_UNUSED(arg)) {
-        log_assert(0);
-}
-
-void
-wsvc_cron_cb(void* ATTR_UNUSED(arg))
-{
-        log_assert(0);
-}
-#endif /* UB_ON_WINDOWS */