added unbound to external deps

1 files changed, 2449 insertions, 0 deletions

diff --git a/external/unbound/daemon/remote.c b/external/unbound/daemon/remote.c
new file mode 100644
index 000000000..100aa8be1
--- /dev/null
+++ b/external/unbound/daemon/remote.c
@@ -0,0 +1,2449 @@
+/*
+ * daemon/remote.c - remote control for the unbound daemon.
+ *
+ * Copyright (c) 2008, 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 remote control functionality for the daemon.
+ * The remote control can be performed using either the commandline
+ * unbound-control tool, or a SSLv3/TLS capable web browser. 
+ * The channel is secured using SSLv3 or TLSv1, and certificates.
+ * Both the server and the client(control tool) have their own keys.
+ */
+#include "config.h"
+#ifdef HAVE_OPENSSL_ERR_H
+#include <openssl/err.h>
+#endif
+#include <ctype.h>
+#include "daemon/remote.h"
+#include "daemon/worker.h"
+#include "daemon/daemon.h"
+#include "daemon/stats.h"
+#include "daemon/cachedump.h"
+#include "util/log.h"
+#include "util/config_file.h"
+#include "util/net_help.h"
+#include "util/module.h"
+#include "services/listen_dnsport.h"
+#include "services/cache/rrset.h"
+#include "services/cache/infra.h"
+#include "services/mesh.h"
+#include "services/localzone.h"
+#include "util/storage/slabhash.h"
+#include "util/fptr_wlist.h"
+#include "util/data/dname.h"
+#include "validator/validator.h"
+#include "validator/val_kcache.h"
+#include "validator/val_kentry.h"
+#include "validator/val_anchor.h"
+#include "iterator/iterator.h"
+#include "iterator/iter_fwd.h"
+#include "iterator/iter_hints.h"
+#include "iterator/iter_delegpt.h"
+#include "services/outbound_list.h"
+#include "services/outside_network.h"
+#include "ldns/str2wire.h"
+#include "ldns/parseutil.h"
+#include "ldns/wire2str.h"
+#include "ldns/sbuffer.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+/* just for portability */
+#ifdef SQ
+#undef SQ
+#endif
+
+/** what to put on statistics lines between var and value, ": " or "=" */
+#define SQ "="
+/** if true, inhibits a lot of =0 lines from the stats output */
+static const int inhibit_zero = 1;
+
+/** subtract timers and the values do not overflow or become negative */
+static void
+timeval_subtract(struct timeval* d, const struct timeval* end, 
+	const struct timeval* start)
+{
+#ifndef S_SPLINT_S
+	time_t end_usec = end->tv_usec;
+	d->tv_sec = end->tv_sec - start->tv_sec;
+	if(end_usec < start->tv_usec) {
+		end_usec += 1000000;
+		d->tv_sec--;
+	}
+	d->tv_usec = end_usec - start->tv_usec;
+#endif
+}
+
+/** divide sum of timers to get average */
+static void
+timeval_divide(struct timeval* avg, const struct timeval* sum, size_t d)
+{
+#ifndef S_SPLINT_S
+	size_t leftover;
+	if(d == 0) {
+		avg->tv_sec = 0;
+		avg->tv_usec = 0;
+		return;
+	}
+	avg->tv_sec = sum->tv_sec / d;
+	avg->tv_usec = sum->tv_usec / d;
+	/* handle fraction from seconds divide */
+	leftover = sum->tv_sec - avg->tv_sec*d;
+	avg->tv_usec += (leftover*1000000)/d;
+#endif
+}
+
+struct daemon_remote*
+daemon_remote_create(struct config_file* cfg)
+{
+	char* s_cert;
+	char* s_key;
+	struct daemon_remote* rc = (struct daemon_remote*)calloc(1, 
+		sizeof(*rc));
+	if(!rc) {
+		log_err("out of memory in daemon_remote_create");
+		return NULL;
+	}
+	rc->max_active = 10;
+
+	if(!cfg->remote_control_enable) {
+		rc->ctx = NULL;
+		return rc;
+	}
+	rc->ctx = SSL_CTX_new(SSLv23_server_method());
+	if(!rc->ctx) {
+		log_crypto_err("could not SSL_CTX_new");
+		free(rc);
+		return NULL;
+	}
+	/* no SSLv2 because has defects */
+	if(!(SSL_CTX_set_options(rc->ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)){
+		log_crypto_err("could not set SSL_OP_NO_SSLv2");
+		daemon_remote_delete(rc);
+		return NULL;
+	}
+	s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
+	s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
+	if(!s_cert || !s_key) {
+		log_err("out of memory in remote control fname");
+		goto setup_error;
+	}
+	verbose(VERB_ALGO, "setup SSL certificates");
+	if (!SSL_CTX_use_certificate_file(rc->ctx,s_cert,SSL_FILETYPE_PEM)) {
+		log_err("Error for server-cert-file: %s", s_cert);
+		log_crypto_err("Error in SSL_CTX use_certificate_file");
+		goto setup_error;
+	}
+	if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) {
+		log_err("Error for server-key-file: %s", s_key);
+		log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
+		goto setup_error;
+	}
+	if(!SSL_CTX_check_private_key(rc->ctx)) {
+		log_err("Error for server-key-file: %s", s_key);
+		log_crypto_err("Error in SSL_CTX check_private_key");
+		goto setup_error;
+	}
+	if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) {
+		log_crypto_err("Error setting up SSL_CTX verify locations");
+	setup_error:
+		free(s_cert);
+		free(s_key);
+		daemon_remote_delete(rc);
+		return NULL;
+	}
+	SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert));
+	SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL);
+	free(s_cert);
+	free(s_key);
+
+	return rc;
+}
+
+void daemon_remote_clear(struct daemon_remote* rc)
+{
+	struct rc_state* p, *np;
+	if(!rc) return;
+	/* but do not close the ports */
+	listen_list_delete(rc->accept_list);
+	rc->accept_list = NULL;
+	/* do close these sockets */
+	p = rc->busy_list;
+	while(p) {
+		np = p->next;
+		if(p->ssl)
+			SSL_free(p->ssl);
+		comm_point_delete(p->c);
+		free(p);
+		p = np;
+	}
+	rc->busy_list = NULL;
+	rc->active = 0;
+	rc->worker = NULL;
+}
+
+void daemon_remote_delete(struct daemon_remote* rc)
+{
+	if(!rc) return;
+	daemon_remote_clear(rc);
+	if(rc->ctx) {
+		SSL_CTX_free(rc->ctx);
+	}
+	free(rc);
+}
+
+/**
+ * Add and open a new control port
+ * @param ip: ip str
+ * @param nr: port nr
+ * @param list: list head
+ * @param noproto_is_err: if lack of protocol support is an error.
+ * @return false on failure.
+ */
+static int
+add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err)
+{
+	struct addrinfo hints;
+	struct addrinfo* res;
+	struct listen_port* n;
+	int noproto;
+	int fd, r;
+	char port[15];
+	snprintf(port, sizeof(port), "%d", nr);
+	port[sizeof(port)-1]=0;
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
+	if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
+#ifdef USE_WINSOCK
+		if(!noproto_is_err && r == EAI_NONAME) {
+			/* tried to lookup the address as name */
+			return 1; /* return success, but do nothing */
+		}
+#endif /* USE_WINSOCK */
+                log_err("control interface %s:%s getaddrinfo: %s %s",
+			ip?ip:"default", port, gai_strerror(r),
+#ifdef EAI_SYSTEM
+			r==EAI_SYSTEM?(char*)strerror(errno):""
+#else
+			""
+#endif
+			);
+		return 0;
+	}
+
+	/* open fd */
+	fd = create_tcp_accept_sock(res, 1, &noproto, 0);
+	freeaddrinfo(res);
+	if(fd == -1 && noproto) {
+		if(!noproto_is_err)
+			return 1; /* return success, but do nothing */
+		log_err("cannot open control interface %s %d : "
+			"protocol not supported", ip, nr);
+		return 0;
+	}
+	if(fd == -1) {
+		log_err("cannot open control interface %s %d", ip, nr);
+		return 0;
+	}
+
+	/* alloc */
+	n = (struct listen_port*)calloc(1, sizeof(*n));
+	if(!n) {
+#ifndef USE_WINSOCK
+		close(fd);
+#else
+		closesocket(fd);
+#endif
+		log_err("out of memory");
+		return 0;
+	}
+	n->next = *list;
+	*list = n;
+	n->fd = fd;
+	return 1;
+}
+
+struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
+{
+	struct listen_port* l = NULL;
+	log_assert(cfg->remote_control_enable && cfg->control_port);
+	if(cfg->control_ifs) {
+		struct config_strlist* p;
+		for(p = cfg->control_ifs; p; p = p->next) {
+			if(!add_open(p->str, cfg->control_port, &l, 1)) {
+				listening_ports_free(l);
+				return NULL;
+			}
+		}
+	} else {
+		/* defaults */
+		if(cfg->do_ip6 &&
+			!add_open("::1", cfg->control_port, &l, 0)) {
+			listening_ports_free(l);
+			return NULL;
+		}
+		if(cfg->do_ip4 &&
+			!add_open("127.0.0.1", cfg->control_port, &l, 1)) {
+			listening_ports_free(l);
+			return NULL;
+		}
+	}
+	return l;
+}
+
+/** open accept commpoint */
+static int
+accept_open(struct daemon_remote* rc, int fd)
+{
+	struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
+	if(!n) {
+		log_err("out of memory");
+		return 0;
+	}
+	n->next = rc->accept_list;
+	rc->accept_list = n;
+	/* open commpt */
+	n->com = comm_point_create_raw(rc->worker->base, fd, 0, 
+		&remote_accept_callback, rc);
+	if(!n->com)
+		return 0;
+	/* keep this port open, its fd is kept in the rc portlist */
+	n->com->do_not_close = 1;
+	return 1;
+}
+
+int daemon_remote_open_accept(struct daemon_remote* rc, 
+	struct listen_port* ports, struct worker* worker)
+{
+	struct listen_port* p;
+	rc->worker = worker;
+	for(p = ports; p; p = p->next) {
+		if(!accept_open(rc, p->fd)) {
+			log_err("could not create accept comm point");
+			return 0;
+		}
+	}
+	return 1;
+}
+
+void daemon_remote_stop_accept(struct daemon_remote* rc)
+{
+	struct listen_list* p;
+	for(p=rc->accept_list; p; p=p->next) {
+		comm_point_stop_listening(p->com);	
+	}
+}
+
+void daemon_remote_start_accept(struct daemon_remote* rc)
+{
+	struct listen_list* p;
+	for(p=rc->accept_list; p; p=p->next) {
+		comm_point_start_listening(p->com, -1, -1);	
+	}
+}
+
+int remote_accept_callback(struct comm_point* c, void* arg, int err, 
+	struct comm_reply* ATTR_UNUSED(rep))
+{
+	struct daemon_remote* rc = (struct daemon_remote*)arg;
+	struct sockaddr_storage addr;
+	socklen_t addrlen;
+	int newfd;
+	struct rc_state* n;
+	if(err != NETEVENT_NOERROR) {
+		log_err("error %d on remote_accept_callback", err);
+		return 0;
+	}
+	/* perform the accept */
+	newfd = comm_point_perform_accept(c, &addr, &addrlen);
+	if(newfd == -1)
+		return 0;
+	/* create new commpoint unless we are servicing already */
+	if(rc->active >= rc->max_active) {
+		log_warn("drop incoming remote control: too many connections");
+	close_exit:
+#ifndef USE_WINSOCK
+		close(newfd);
+#else
+		closesocket(newfd);
+#endif
+		return 0;
+	}
+
+	/* setup commpoint to service the remote control command */
+	n = (struct rc_state*)calloc(1, sizeof(*n));
+	if(!n) {
+		log_err("out of memory");
+		goto close_exit;
+	}
+	/* start in reading state */
+	n->c = comm_point_create_raw(rc->worker->base, newfd, 0, 
+		&remote_control_callback, n);
+	if(!n->c) {
+		log_err("out of memory");
+		free(n);
+		goto close_exit;
+	}
+	log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
+	n->c->do_not_close = 0;
+	comm_point_stop_listening(n->c);
+	comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
+	memcpy(&n->c->repinfo.addr, &addr, addrlen);
+	n->c->repinfo.addrlen = addrlen;
+	n->shake_state = rc_hs_read;
+	n->ssl = SSL_new(rc->ctx);
+	if(!n->ssl) {
+		log_crypto_err("could not SSL_new");
+		comm_point_delete(n->c);
+		free(n);
+		goto close_exit;
+	}
+	SSL_set_accept_state(n->ssl);
+        (void)SSL_set_mode(n->ssl, SSL_MODE_AUTO_RETRY);
+	if(!SSL_set_fd(n->ssl, newfd)) {
+		log_crypto_err("could not SSL_set_fd");
+		SSL_free(n->ssl);
+		comm_point_delete(n->c);
+		free(n);
+		goto close_exit;
+	}
+
+	n->rc = rc;
+	n->next = rc->busy_list;
+	rc->busy_list = n;
+	rc->active ++;
+
+	/* perform the first nonblocking read already, for windows, 
+	 * so it can return wouldblock. could be faster too. */
+	(void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
+	return 0;
+}
+
+/** delete from list */
+static void
+state_list_remove_elem(struct rc_state** list, struct comm_point* c)
+{
+	while(*list) {
+		if( (*list)->c == c) {
+			*list = (*list)->next;
+			return;
+		}
+		list = &(*list)->next;
+	}
+}
+
+/** decrease active count and remove commpoint from busy list */
+static void
+clean_point(struct daemon_remote* rc, struct rc_state* s)
+{
+	state_list_remove_elem(&rc->busy_list, s->c);
+	rc->active --;
+	if(s->ssl) {
+		SSL_shutdown(s->ssl);
+		SSL_free(s->ssl);
+	}
+	comm_point_delete(s->c);
+	free(s);
+}
+
+int
+ssl_print_text(SSL* ssl, const char* text)
+{
+	int r;
+	if(!ssl) 
+		return 0;
+	ERR_clear_error();
+	if((r=SSL_write(ssl, text, (int)strlen(text))) <= 0) {
+		if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
+			verbose(VERB_QUERY, "warning, in SSL_write, peer "
+				"closed connection");
+			return 0;
+		}
+		log_crypto_err("could not SSL_write");
+		return 0;
+	}
+	return 1;
+}
+
+/** print text over the ssl connection */
+static int
+ssl_print_vmsg(SSL* ssl, const char* format, va_list args)
+{
+	char msg[1024];
+	vsnprintf(msg, sizeof(msg), format, args);
+	return ssl_print_text(ssl, msg);
+}
+
+/** printf style printing to the ssl connection */
+int ssl_printf(SSL* ssl, const char* format, ...)
+{
+	va_list args;
+	int ret;
+	va_start(args, format);
+	ret = ssl_print_vmsg(ssl, format, args);
+	va_end(args);
+	return ret;
+}
+
+int
+ssl_read_line(SSL* ssl, char* buf, size_t max)
+{
+	int r;
+	size_t len = 0;
+	if(!ssl)
+		return 0;
+	while(len < max) {
+		ERR_clear_error();
+		if((r=SSL_read(ssl, buf+len, 1)) <= 0) {
+			if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
+				buf[len] = 0;
+				return 1;
+			}
+			log_crypto_err("could not SSL_read");
+			return 0;
+		}
+		if(buf[len] == '\n') {
+			/* return string without \n */
+			buf[len] = 0;
+			return 1;
+		}
+		len++;
+	}
+	buf[max-1] = 0;
+	log_err("control line too long (%d): %s", (int)max, buf);
+	return 0;
+}
+
+/** skip whitespace, return new pointer into string */
+static char*
+skipwhite(char* str)
+{
+	/* EOS \0 is not a space */
+	while( isspace(*str) ) 
+		str++;
+	return str;
+}
+
+/** send the OK to the control client */
+static void send_ok(SSL* ssl)
+{
+	(void)ssl_printf(ssl, "ok\n");
+}
+
+/** do the stop command */
+static void
+do_stop(SSL* ssl, struct daemon_remote* rc)
+{
+	rc->worker->need_to_exit = 1;
+	comm_base_exit(rc->worker->base);
+	send_ok(ssl);
+}
+
+/** do the reload command */
+static void
+do_reload(SSL* ssl, struct daemon_remote* rc)
+{
+	rc->worker->need_to_exit = 0;
+	comm_base_exit(rc->worker->base);
+	send_ok(ssl);
+}
+
+/** do the verbosity command */
+static void
+do_verbosity(SSL* ssl, char* str)
+{
+	int val = atoi(str);
+	if(val == 0 && strcmp(str, "0") != 0) {
+		ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
+		return;
+	}
+	verbosity = val;
+	send_ok(ssl);
+}
+
+/** print stats from statinfo */
+static int
+print_stats(SSL* ssl, const char* nm, struct stats_info* s)
+{
+	struct timeval avg;
+	if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm, 
+		(unsigned long)s->svr.num_queries)) return 0;
+	if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm, 
+		(unsigned long)(s->svr.num_queries 
+			- s->svr.num_queries_missed_cache))) return 0;
+	if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm, 
+		(unsigned long)s->svr.num_queries_missed_cache)) return 0;
+	if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm, 
+		(unsigned long)s->svr.num_queries_prefetch)) return 0;
+	if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm, 
+		(unsigned long)s->mesh_replies_sent)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
+		(s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
+			(double)s->svr.sum_query_list_size/
+			(s->svr.num_queries_missed_cache+
+			s->svr.num_queries_prefetch) : 0.0)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm,
+		(unsigned long)s->svr.max_query_list_size)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm,
+		(unsigned long)s->mesh_jostled)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm,
+		(unsigned long)s->mesh_dropped)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm,
+		(unsigned long)s->mesh_num_states)) return 0;
+	if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm,
+		(unsigned long)s->mesh_num_reply_states)) return 0;
+	timeval_divide(&avg, &s->mesh_replies_sum_wait, s->mesh_replies_sent);
+	if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
+		(long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
+	if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm, 
+		s->mesh_time_median)) return 0;
+	return 1;
+}
+
+/** print stats for one thread */
+static int
+print_thread_stats(SSL* ssl, int i, struct stats_info* s)
+{
+	char nm[16];
+	snprintf(nm, sizeof(nm), "thread%d", i);
+	nm[sizeof(nm)-1]=0;
+	return print_stats(ssl, nm, s);
+}
+
+/** print long number */
+static int
+print_longnum(SSL* ssl, const char* desc, size_t x)
+{
+	if(x > 1024*1024*1024) {
+		/* more than a Gb */
+		size_t front = x / (size_t)1000000;
+		size_t back = x % (size_t)1000000;
+		return ssl_printf(ssl, "%s%u%6.6u\n", desc, 
+			(unsigned)front, (unsigned)back);
+	} else {
+		return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x);
+	}
+}
+
+/** print mem stats */
+static int
+print_mem(SSL* ssl, struct worker* worker, struct daemon* daemon)
+{
+	int m;
+	size_t msg, rrset, val, iter;
+#ifdef HAVE_SBRK
+	extern void* unbound_start_brk;
+	void* cur = sbrk(0);
+	if(!print_longnum(ssl, "mem.total.sbrk"SQ, 
+		(size_t)((char*)cur - (char*)unbound_start_brk))) return 0;
+#endif /* HAVE_SBRK */
+	msg = slabhash_get_mem(daemon->env->msg_cache);
+	rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
+	val=0;
+	iter=0;
+	m = modstack_find(&worker->env.mesh->mods, "validator");
+	if(m != -1) {
+		fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->
+			mods.mod[m]->get_mem));
+		val = (*worker->env.mesh->mods.mod[m]->get_mem)
+			(&worker->env, m);
+	}
+	m = modstack_find(&worker->env.mesh->mods, "iterator");
+	if(m != -1) {
+		fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->
+			mods.mod[m]->get_mem));
+		iter = (*worker->env.mesh->mods.mod[m]->get_mem)
+			(&worker->env, m);
+	}
+
+	if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
+		return 0;
+	if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
+		return 0;
+	if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
+		return 0;
+	if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
+		return 0;
+	return 1;
+}
+
+/** print uptime stats */
+static int
+print_uptime(SSL* ssl, struct worker* worker, int reset)
+{
+	struct timeval now = *worker->env.now_tv;
+	struct timeval up, dt;
+	timeval_subtract(&up, &now, &worker->daemon->time_boot);
+	timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
+	if(reset)
+		worker->daemon->time_last_stat = now;
+	if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n", 
+		(long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
+	if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n", 
+		(long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
+	if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n", 
+		(long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
+	return 1;
+}
+
+/** print extended histogram */
+static int
+print_hist(SSL* ssl, struct stats_info* s)
+{
+	struct timehist* hist;
+	size_t i;
+	hist = timehist_setup();
+	if(!hist) {
+		log_err("out of memory");
+		return 0;
+	}
+	timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
+	for(i=0; i<hist->num; i++) {
+		if(!ssl_printf(ssl, 
+			"histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
+			(int)hist->buckets[i].lower.tv_sec,
+			(int)hist->buckets[i].lower.tv_usec,
+			(int)hist->buckets[i].upper.tv_sec,
+			(int)hist->buckets[i].upper.tv_usec,
+			(unsigned long)hist->buckets[i].count)) {
+			timehist_delete(hist);
+			return 0;
+		}
+	}
+	timehist_delete(hist);
+	return 1;
+}
+
+/** print extended stats */
+static int
+print_ext(SSL* ssl, struct stats_info* s)
+{
+	int i;
+	char nm[16];
+	const sldns_rr_descriptor* desc;
+	const sldns_lookup_table* lt;
+	/* TYPE */
+	for(i=0; i<STATS_QTYPE_NUM; i++) {
+		if(inhibit_zero && s->svr.qtype[i] == 0)
+			continue;
+		desc = sldns_rr_descript((uint16_t)i);
+		if(desc && desc->_name) {
+			snprintf(nm, sizeof(nm), "%s", desc->_name);
+		} else if (i == LDNS_RR_TYPE_IXFR) {
+			snprintf(nm, sizeof(nm), "IXFR");
+		} else if (i == LDNS_RR_TYPE_AXFR) {
+			snprintf(nm, sizeof(nm), "AXFR");
+		} else if (i == LDNS_RR_TYPE_MAILA) {
+			snprintf(nm, sizeof(nm), "MAILA");
+		} else if (i == LDNS_RR_TYPE_MAILB) {
+			snprintf(nm, sizeof(nm), "MAILB");
+		} else if (i == LDNS_RR_TYPE_ANY) {
+			snprintf(nm, sizeof(nm), "ANY");
+		} else {
+			snprintf(nm, sizeof(nm), "TYPE%d", i);
+		}
+		if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n", 
+			nm, (unsigned long)s->svr.qtype[i])) return 0;
+	}
+	if(!inhibit_zero || s->svr.qtype_big) {
+		if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n", 
+			(unsigned long)s->svr.qtype_big)) return 0;
+	}
+	/* CLASS */
+	for(i=0; i<STATS_QCLASS_NUM; i++) {
+		if(inhibit_zero && s->svr.qclass[i] == 0)
+			continue;
+		lt = sldns_lookup_by_id(sldns_rr_classes, i);
+		if(lt && lt->name) {
+			snprintf(nm, sizeof(nm), "%s", lt->name);
+		} else {
+			snprintf(nm, sizeof(nm), "CLASS%d", i);
+		}
+		if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n", 
+			nm, (unsigned long)s->svr.qclass[i])) return 0;
+	}
+	if(!inhibit_zero || s->svr.qclass_big) {
+		if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n", 
+			(unsigned long)s->svr.qclass_big)) return 0;
+	}
+	/* OPCODE */
+	for(i=0; i<STATS_OPCODE_NUM; i++) {
+		if(inhibit_zero && s->svr.qopcode[i] == 0)
+			continue;
+		lt = sldns_lookup_by_id(sldns_opcodes, i);
+		if(lt && lt->name) {
+			snprintf(nm, sizeof(nm), "%s", lt->name);
+		} else {
+			snprintf(nm, sizeof(nm), "OPCODE%d", i);
+		}
+		if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n", 
+			nm, (unsigned long)s->svr.qopcode[i])) return 0;
+	}
+	/* transport */
+	if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n", 
+		(unsigned long)s->svr.qtcp)) return 0;
+	if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n", 
+		(unsigned long)s->svr.qtcp_outgoing)) return 0;
+	if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n", 
+		(unsigned long)s->svr.qipv6)) return 0;
+	/* flags */
+	if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_QR)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_AA)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_TC)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_RD)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_RA)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_Z)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_AD)) return 0;
+	if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n", 
+		(unsigned long)s->svr.qbit_CD)) return 0;
+	if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n", 
+		(unsigned long)s->svr.qEDNS)) return 0;
+	if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n", 
+		(unsigned long)s->svr.qEDNS_DO)) return 0;
+
+	/* RCODE */
+	for(i=0; i<STATS_RCODE_NUM; i++) {
+		if(inhibit_zero && s->svr.ans_rcode[i] == 0)
+			continue;
+		lt = sldns_lookup_by_id(sldns_rcodes, i);
+		if(lt && lt->name) {
+			snprintf(nm, sizeof(nm), "%s", lt->name);
+		} else {
+			snprintf(nm, sizeof(nm), "RCODE%d", i);
+		}
+		if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n", 
+			nm, (unsigned long)s->svr.ans_rcode[i])) return 0;
+	}
+	if(!inhibit_zero || s->svr.ans_rcode_nodata) {
+		if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n", 
+			(unsigned long)s->svr.ans_rcode_nodata)) return 0;
+	}
+	/* validation */
+	if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n", 
+		(unsigned long)s->svr.ans_secure)) return 0;
+	if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n", 
+		(unsigned long)s->svr.ans_bogus)) return 0;
+	if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n", 
+		(unsigned long)s->svr.rrset_bogus)) return 0;
+	/* threat detection */
+	if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n", 
+		(unsigned long)s->svr.unwanted_queries)) return 0;
+	if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n", 
+		(unsigned long)s->svr.unwanted_replies)) return 0;
+	/* cache counts */
+	if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n",
+		(unsigned)s->svr.msg_cache_count)) return 0;
+	if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n",
+		(unsigned)s->svr.rrset_cache_count)) return 0;
+	if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n",
+		(unsigned)s->svr.infra_cache_count)) return 0;
+	if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n",
+		(unsigned)s->svr.key_cache_count)) return 0;
+	return 1;
+}
+
+/** do the stats command */
+static void
+do_stats(SSL* ssl, struct daemon_remote* rc, int reset)
+{
+	struct daemon* daemon = rc->worker->daemon;
+	struct stats_info total;
+	struct stats_info s;
+	int i;
+	log_assert(daemon->num > 0);
+	/* gather all thread statistics in one place */
+	for(i=0; i<daemon->num; i++) {
+		server_stats_obtain(rc->worker, daemon->workers[i], &s, reset);
+		if(!print_thread_stats(ssl, i, &s))
+			return;
+		if(i == 0)
+			total = s;
+		else	server_stats_add(&total, &s);
+	}
+	/* print the thread statistics */
+	total.mesh_time_median /= (double)daemon->num;
+	if(!print_stats(ssl, "total", &total)) 
+		return;
+	if(!print_uptime(ssl, rc->worker, reset))
+		return;
+	if(daemon->cfg->stat_extended) {
+		if(!print_mem(ssl, rc->worker, daemon)) 
+			return;
+		if(!print_hist(ssl, &total))
+			return;
+		if(!print_ext(ssl, &total))
+			return;
+	}
+}
+
+/** parse commandline argument domain name */
+static int
+parse_arg_name(SSL* ssl, char* str, uint8_t** res, size_t* len, int* labs)
+{
+	uint8_t nm[LDNS_MAX_DOMAINLEN+1];
+	size_t nmlen = sizeof(nm);
+	int status;
+	*res = NULL;
+	*len = 0;
+	*labs = 0;
+	status = sldns_str2wire_dname_buf(str, nm, &nmlen);
+	if(status != 0) {
+		ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
+			LDNS_WIREPARSE_OFFSET(status),
+			sldns_get_errorstr_parse(status));
+		return 0;
+	}
+	*res = memdup(nm, nmlen);
+	if(!*res) {
+		ssl_printf(ssl, "error out of memory\n");
+		return 0;
+	}
+	*labs = dname_count_size_labels(*res, len);
+	return 1;
+}
+
+/** find second argument, modifies string */
+static int
+find_arg2(SSL* ssl, char* arg, char** arg2)
+{
+	char* as = strchr(arg, ' ');
+	char* at = strchr(arg, '\t');
+	if(as && at) {
+		if(at < as)
+			as = at;
+		as[0]=0;
+		*arg2 = skipwhite(as+1);
+	} else if(as) {
+		as[0]=0;
+		*arg2 = skipwhite(as+1);
+	} else if(at) {
+		at[0]=0;
+		*arg2 = skipwhite(at+1);
+	} else {
+		ssl_printf(ssl, "error could not find next argument "
+			"after %s\n", arg);
+		return 0;
+	}
+	return 1;
+}
+
+/** Add a new zone */
+static void
+do_zone_add(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	char* arg2;
+	enum localzone_type t;
+	struct local_zone* z;
+	if(!find_arg2(ssl, arg, &arg2))
+		return;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	if(!local_zone_str2type(arg2, &t)) {
+		ssl_printf(ssl, "error not a zone type. %s\n", arg2);
+		free(nm);
+		return;
+	}
+	lock_rw_wrlock(&worker->daemon->local_zones->lock);
+	if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen, 
+		nmlabs, LDNS_RR_CLASS_IN))) {
+		/* already present in tree */
+		lock_rw_wrlock(&z->lock);
+		z->type = t; /* update type anyway */
+		lock_rw_unlock(&z->lock);
+		free(nm);
+		lock_rw_unlock(&worker->daemon->local_zones->lock);
+		send_ok(ssl);
+		return;
+	}
+	if(!local_zones_add_zone(worker->daemon->local_zones, nm, nmlen, 
+		nmlabs, LDNS_RR_CLASS_IN, t)) {
+		lock_rw_unlock(&worker->daemon->local_zones->lock);
+		ssl_printf(ssl, "error out of memory\n");
+		return;
+	}
+	lock_rw_unlock(&worker->daemon->local_zones->lock);
+	send_ok(ssl);
+}
+
+/** Remove a zone */
+static void
+do_zone_remove(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	struct local_zone* z;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	lock_rw_wrlock(&worker->daemon->local_zones->lock);
+	if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen, 
+		nmlabs, LDNS_RR_CLASS_IN))) {
+		/* present in tree */
+		local_zones_del_zone(worker->daemon->local_zones, z);
+	}
+	lock_rw_unlock(&worker->daemon->local_zones->lock);
+	free(nm);
+	send_ok(ssl);
+}
+
+/** Add new RR data */
+static void
+do_data_add(SSL* ssl, struct worker* worker, char* arg)
+{
+	if(!local_zones_add_RR(worker->daemon->local_zones, arg)) {
+		ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
+		return;
+	}
+	send_ok(ssl);
+}
+
+/** Remove RR data */
+static void
+do_data_remove(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	local_zones_del_data(worker->daemon->local_zones, nm,
+		nmlen, nmlabs, LDNS_RR_CLASS_IN);
+	free(nm);
+	send_ok(ssl);
+}
+
+/** cache lookup of nameservers */
+static void
+do_lookup(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	(void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
+	free(nm);
+}
+
+/** flush something from rrset and msg caches */
+static void
+do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
+	uint16_t t, uint16_t c)
+{
+	hashvalue_t h;
+	struct query_info k;
+	rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
+	if(t == LDNS_RR_TYPE_SOA)
+		rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
+			PACKED_RRSET_SOA_NEG);
+	k.qname = nm;
+	k.qname_len = nmlen;
+	k.qtype = t;
+	k.qclass = c;
+	h = query_info_hash(&k);
+	slabhash_remove(worker->env.msg_cache, h, &k);
+}
+
+/** flush a type */
+static void
+do_flush_type(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	char* arg2;
+	uint16_t t;
+	if(!find_arg2(ssl, arg, &arg2))
+		return;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	t = sldns_get_rr_type_by_name(arg2);
+	do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
+	
+	free(nm);
+	send_ok(ssl);
+}
+
+/** flush statistics */
+static void
+do_flush_stats(SSL* ssl, struct worker* worker)
+{
+	worker_stats_clear(worker);
+	send_ok(ssl);
+}
+
+/**
+ * Local info for deletion functions
+ */
+struct del_info {
+	/** worker */
+	struct worker* worker;
+	/** name to delete */
+	uint8_t* name;
+	/** length */
+	size_t len;
+	/** labels */
+	int labs;
+	/** now */
+	time_t now;
+	/** time to invalidate to */
+	time_t expired;
+	/** number of rrsets removed */
+	size_t num_rrsets;
+	/** number of msgs removed */
+	size_t num_msgs;
+	/** number of key entries removed */
+	size_t num_keys;
+	/** length of addr */
+	socklen_t addrlen;
+	/** socket address for host deletion */
+	struct sockaddr_storage addr;
+};
+
+/** callback to delete hosts in infra cache */
+static void
+infra_del_host(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct infra_key* k = (struct infra_key*)e->key;
+	if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
+		struct infra_data* d = (struct infra_data*)e->data;
+		d->probedelay = 0;
+		d->timeout_A = 0;
+		d->timeout_AAAA = 0;
+		d->timeout_other = 0;
+		rtt_init(&d->rtt);
+		if(d->ttl >= inf->now) {
+			d->ttl = inf->expired;
+			inf->num_keys++;
+		}
+	}
+}
+
+/** flush infra cache */
+static void
+do_flush_infra(SSL* ssl, struct worker* worker, char* arg)
+{
+	struct sockaddr_storage addr;
+	socklen_t len;
+	struct del_info inf;
+	if(strcmp(arg, "all") == 0) {
+		slabhash_clear(worker->env.infra_cache->hosts);
+		send_ok(ssl);
+		return;
+	}
+	if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
+		(void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
+		return;
+	}
+	/* delete all entries from cache */
+	/* what we do is to set them all expired */
+	inf.worker = worker;
+	inf.name = 0;
+	inf.len = 0;
+	inf.labs = 0;
+	inf.now = *worker->env.now;
+	inf.expired = *worker->env.now;
+	inf.expired -= 3; /* handle 3 seconds skew between threads */
+	inf.num_rrsets = 0;
+	inf.num_msgs = 0;
+	inf.num_keys = 0;
+	inf.addrlen = len;
+	memmove(&inf.addr, &addr, len);
+	slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
+		&inf);
+	send_ok(ssl);
+}
+
+/** flush requestlist */
+static void
+do_flush_requestlist(SSL* ssl, struct worker* worker)
+{
+	mesh_delete_all(worker->env.mesh);
+	send_ok(ssl);
+}
+
+/** callback to delete rrsets in a zone */
+static void
+zone_del_rrset(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
+	if(dname_subdomain_c(k->rk.dname, inf->name)) {
+		struct packed_rrset_data* d = 
+			(struct packed_rrset_data*)e->data;
+		if(d->ttl >= inf->now) {
+			d->ttl = inf->expired;
+			inf->num_rrsets++;
+		}
+	}
+}
+
+/** callback to delete messages in a zone */
+static void
+zone_del_msg(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct msgreply_entry* k = (struct msgreply_entry*)e->key;
+	if(dname_subdomain_c(k->key.qname, inf->name)) {
+		struct reply_info* d = (struct reply_info*)e->data;
+		if(d->ttl >= inf->now) {
+			d->ttl = inf->expired;
+			inf->num_msgs++;
+		}
+	}
+}
+
+/** callback to delete keys in zone */
+static void
+zone_del_kcache(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct key_entry_key* k = (struct key_entry_key*)e->key;
+	if(dname_subdomain_c(k->name, inf->name)) {
+		struct key_entry_data* d = (struct key_entry_data*)e->data;
+		if(d->ttl >= inf->now) {
+			d->ttl = inf->expired;
+			inf->num_keys++;
+		}
+	}
+}
+
+/** remove all rrsets and keys from zone from cache */
+static void
+do_flush_zone(SSL* ssl, struct worker* worker, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	struct del_info inf;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	/* delete all RRs and key entries from zone */
+	/* what we do is to set them all expired */
+	inf.worker = worker;
+	inf.name = nm;
+	inf.len = nmlen;
+	inf.labs = nmlabs;
+	inf.now = *worker->env.now;
+	inf.expired = *worker->env.now;
+	inf.expired -= 3; /* handle 3 seconds skew between threads */
+	inf.num_rrsets = 0;
+	inf.num_msgs = 0;
+	inf.num_keys = 0;
+	slabhash_traverse(&worker->env.rrset_cache->table, 1, 
+		&zone_del_rrset, &inf);
+
+	slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
+
+	/* and validator cache */
+	if(worker->env.key_cache) {
+		slabhash_traverse(worker->env.key_cache->slab, 1, 
+			&zone_del_kcache, &inf);
+	}
+
+	free(nm);
+
+	(void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
+		"and %lu key entries\n", (unsigned long)inf.num_rrsets, 
+		(unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
+}
+
+/** callback to delete bogus rrsets */
+static void
+bogus_del_rrset(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
+	if(d->security == sec_status_bogus) {
+		d->ttl = inf->expired;
+		inf->num_rrsets++;
+	}
+}
+
+/** callback to delete bogus messages */
+static void
+bogus_del_msg(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct reply_info* d = (struct reply_info*)e->data;
+	if(d->security == sec_status_bogus) {
+		d->ttl = inf->expired;
+		inf->num_msgs++;
+	}
+}
+
+/** callback to delete bogus keys */
+static void
+bogus_del_kcache(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct key_entry_data* d = (struct key_entry_data*)e->data;
+	if(d->isbad) {
+		d->ttl = inf->expired;
+		inf->num_keys++;
+	}
+}
+
+/** remove all bogus rrsets, msgs and keys from cache */
+static void
+do_flush_bogus(SSL* ssl, struct worker* worker)
+{
+	struct del_info inf;
+	/* what we do is to set them all expired */
+	inf.worker = worker;
+	inf.now = *worker->env.now;
+	inf.expired = *worker->env.now;
+	inf.expired -= 3; /* handle 3 seconds skew between threads */
+	inf.num_rrsets = 0;
+	inf.num_msgs = 0;
+	inf.num_keys = 0;
+	slabhash_traverse(&worker->env.rrset_cache->table, 1, 
+		&bogus_del_rrset, &inf);
+
+	slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
+
+	/* and validator cache */
+	if(worker->env.key_cache) {
+		slabhash_traverse(worker->env.key_cache->slab, 1, 
+			&bogus_del_kcache, &inf);
+	}
+
+	(void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
+		"and %lu key entries\n", (unsigned long)inf.num_rrsets, 
+		(unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
+}
+
+/** callback to delete negative and servfail rrsets */
+static void
+negative_del_rrset(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
+	struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
+	/* delete the parentside negative cache rrsets,
+	 * these are namerserver rrsets that failed lookup, rdata empty */
+	if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 &&
+		d->rrsig_count == 0 && d->rr_len[0] == 0) {
+		d->ttl = inf->expired;
+		inf->num_rrsets++;
+	}
+}
+
+/** callback to delete negative and servfail messages */
+static void
+negative_del_msg(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct reply_info* d = (struct reply_info*)e->data;
+	/* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error
+	 * or NOERROR rcode with ANCOUNT==0: a NODATA answer */
+	if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) {
+		d->ttl = inf->expired;
+		inf->num_msgs++;
+	}
+}
+
+/** callback to delete negative key entries */
+static void
+negative_del_kcache(struct lruhash_entry* e, void* arg)
+{
+	/* entry is locked */
+	struct del_info* inf = (struct del_info*)arg;
+	struct key_entry_data* d = (struct key_entry_data*)e->data;
+	/* could be bad because of lookup failure on the DS, DNSKEY, which
+	 * was nxdomain or servfail, and thus a result of negative lookups */
+	if(d->isbad) {
+		d->ttl = inf->expired;
+		inf->num_keys++;
+	}
+}
+
+/** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */
+static void
+do_flush_negative(SSL* ssl, struct worker* worker)
+{
+	struct del_info inf;
+	/* what we do is to set them all expired */
+	inf.worker = worker;
+	inf.now = *worker->env.now;
+	inf.expired = *worker->env.now;
+	inf.expired -= 3; /* handle 3 seconds skew between threads */
+	inf.num_rrsets = 0;
+	inf.num_msgs = 0;
+	inf.num_keys = 0;
+	slabhash_traverse(&worker->env.rrset_cache->table, 1, 
+		&negative_del_rrset, &inf);
+
+	slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf);
+
+	/* and validator cache */
+	if(worker->env.key_cache) {
+		slabhash_traverse(worker->env.key_cache->slab, 1, 
+			&negative_del_kcache, &inf);
+	}
+
+	(void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
+		"and %lu key entries\n", (unsigned long)inf.num_rrsets, 
+		(unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
+}
+
+/** remove name rrset from cache */
+static void
+do_flush_name(SSL* ssl, struct worker* w, char* arg)
+{
+	uint8_t* nm;
+	int nmlabs;
+	size_t nmlen;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
+	do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
+	
+	free(nm);
+	send_ok(ssl);
+}
+
+/** printout a delegation point info */
+static int
+ssl_print_name_dp(SSL* ssl, const char* str, uint8_t* nm, uint16_t dclass,
+	struct delegpt* dp)
+{
+	char buf[257];
+	struct delegpt_ns* ns;
+	struct delegpt_addr* a;
+	int f = 0;
+	if(str) { /* print header for forward, stub */
+		char* c = sldns_wire2str_class(dclass);
+		dname_str(nm, buf);
+		if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) {
+			free(c);
+			return 0;
+		}
+		free(c);
+	}
+	for(ns = dp->nslist; ns; ns = ns->next) {
+		dname_str(ns->name, buf);
+		if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
+			return 0;
+		f = 1;
+	}
+	for(a = dp->target_list; a; a = a->next_target) {
+		addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
+		if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
+			return 0;
+		f = 1;
+	}
+	return ssl_printf(ssl, "\n");
+}
+
+
+/** print root forwards */
+static int
+print_root_fwds(SSL* ssl, struct iter_forwards* fwds, uint8_t* root)
+{
+	struct delegpt* dp;
+	dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
+	if(!dp)
+		return ssl_printf(ssl, "off (using root hints)\n");
+	/* if dp is returned it must be the root */
+	log_assert(query_dname_compare(dp->name, root)==0);
+	return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
+}
+
+/** parse args into delegpt */
+static struct delegpt*
+parse_delegpt(SSL* ssl, char* args, uint8_t* nm, int allow_names)
+{
+	/* parse args and add in */
+	char* p = args;
+	char* todo;
+	struct delegpt* dp = delegpt_create_mlc(nm);
+	struct sockaddr_storage addr;
+	socklen_t addrlen;
+	if(!dp) {
+		(void)ssl_printf(ssl, "error out of memory\n");
+		return NULL;
+	}
+	while(p) {
+		todo = p;
+		p = strchr(p, ' '); /* find next spot, if any */
+		if(p) {
+			*p++ = 0;	/* end this spot */
+			p = skipwhite(p); /* position at next spot */
+		}
+		/* parse address */
+		if(!extstrtoaddr(todo, &addr, &addrlen)) {
+			if(allow_names) {
+				uint8_t* n = NULL;
+				size_t ln;
+				int lb;
+				if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) {
+					(void)ssl_printf(ssl, "error cannot "
+						"parse IP address or name "
+						"'%s'\n", todo);
+					delegpt_free_mlc(dp);
+					return NULL;
+				}
+				if(!delegpt_add_ns_mlc(dp, n, 0)) {
+					(void)ssl_printf(ssl, "error out of memory\n");
+					free(n);
+					delegpt_free_mlc(dp);
+					return NULL;
+				}
+				free(n);
+
+			} else {
+				(void)ssl_printf(ssl, "error cannot parse"
+					" IP address '%s'\n", todo);
+				delegpt_free_mlc(dp);
+				return NULL;
+			}
+		} else {
+			/* add address */
+			if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0)) {
+				(void)ssl_printf(ssl, "error out of memory\n");
+				delegpt_free_mlc(dp);
+				return NULL;
+			}
+		}
+	}
+	return dp;
+}
+
+/** do the status command */
+static void
+do_forward(SSL* ssl, struct worker* worker, char* args)
+{
+	struct iter_forwards* fwd = worker->env.fwds;
+	uint8_t* root = (uint8_t*)"\000";
+	if(!fwd) {
+		(void)ssl_printf(ssl, "error: structure not allocated\n");
+		return;
+	}
+	if(args == NULL || args[0] == 0) {
+		(void)print_root_fwds(ssl, fwd, root);
+		return;
+	}
+	/* set root forwards for this thread. since we are in remote control
+	 * the actual mesh is not running, so we can freely edit it. */
+	/* delete all the existing queries first */
+	mesh_delete_all(worker->env.mesh);
+	if(strcmp(args, "off") == 0) {
+		forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
+	} else {
+		struct delegpt* dp;
+		if(!(dp = parse_delegpt(ssl, args, root, 0)))
+			return;
+		if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
+			(void)ssl_printf(ssl, "error out of memory\n");
+			return;
+		}
+	}
+	send_ok(ssl);
+}
+
+static int
+parse_fs_args(SSL* ssl, char* args, uint8_t** nm, struct delegpt** dp,
+	int* insecure, int* prime)
+{
+	char* zonename;
+	char* rest;
+	size_t nmlen;
+	int nmlabs;
+	/* parse all -x args */
+	while(args[0] == '+') {
+		if(!find_arg2(ssl, args, &rest))
+			return 0;
+		while(*(++args) != 0) {
+			if(*args == 'i' && insecure)
+				*insecure = 1;
+			else if(*args == 'p' && prime)
+				*prime = 1;
+			else {
+				(void)ssl_printf(ssl, "error: unknown option %s\n", args);
+				return 0;
+			}
+		}
+		args = rest;
+	}
+	/* parse name */
+	if(dp) {
+		if(!find_arg2(ssl, args, &rest))
+			return 0;
+		zonename = args;
+		args = rest;
+	} else	zonename = args;
+	if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
+		return 0;
+
+	/* parse dp */
+	if(dp) {
+		if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) {
+			free(*nm);
+			return 0;
+		}
+	}
+	return 1;
+}
+
+/** do the forward_add command */
+static void
+do_forward_add(SSL* ssl, struct worker* worker, char* args)
+{
+	struct iter_forwards* fwd = worker->env.fwds;
+	int insecure = 0;
+	uint8_t* nm = NULL;
+	struct delegpt* dp = NULL;
+	if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
+		return;
+	if(insecure && worker->env.anchors) {
+		if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
+			nm)) {
+			(void)ssl_printf(ssl, "error out of memory\n");
+			delegpt_free_mlc(dp);
+			free(nm);
+			return;
+		}
+	}
+	if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
+		(void)ssl_printf(ssl, "error out of memory\n");
+		free(nm);
+		return;
+	}
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the forward_remove command */
+static void
+do_forward_remove(SSL* ssl, struct worker* worker, char* args)
+{
+	struct iter_forwards* fwd = worker->env.fwds;
+	int insecure = 0;
+	uint8_t* nm = NULL;
+	if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
+		return;
+	if(insecure && worker->env.anchors)
+		anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
+			nm);
+	forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the stub_add command */
+static void
+do_stub_add(SSL* ssl, struct worker* worker, char* args)
+{
+	struct iter_forwards* fwd = worker->env.fwds;
+	int insecure = 0, prime = 0;
+	uint8_t* nm = NULL;
+	struct delegpt* dp = NULL;
+	if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
+		return;
+	if(insecure && worker->env.anchors) {
+		if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
+			nm)) {
+			(void)ssl_printf(ssl, "error out of memory\n");
+			delegpt_free_mlc(dp);
+			free(nm);
+			return;
+		}
+	}
+	if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
+		if(insecure && worker->env.anchors)
+			anchors_delete_insecure(worker->env.anchors,
+				LDNS_RR_CLASS_IN, nm);
+		(void)ssl_printf(ssl, "error out of memory\n");
+		delegpt_free_mlc(dp);
+		free(nm);
+		return;
+	}
+	if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
+		(void)ssl_printf(ssl, "error out of memory\n");
+		forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
+		if(insecure && worker->env.anchors)
+			anchors_delete_insecure(worker->env.anchors,
+				LDNS_RR_CLASS_IN, nm);
+		free(nm);
+		return;
+	}
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the stub_remove command */
+static void
+do_stub_remove(SSL* ssl, struct worker* worker, char* args)
+{
+	struct iter_forwards* fwd = worker->env.fwds;
+	int insecure = 0;
+	uint8_t* nm = NULL;
+	if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
+		return;
+	if(insecure && worker->env.anchors)
+		anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
+			nm);
+	forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
+	hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the insecure_add command */
+static void
+do_insecure_add(SSL* ssl, struct worker* worker, char* arg)
+{
+	size_t nmlen;
+	int nmlabs;
+	uint8_t* nm = NULL;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	if(worker->env.anchors) {
+		if(!anchors_add_insecure(worker->env.anchors,
+			LDNS_RR_CLASS_IN, nm)) {
+			(void)ssl_printf(ssl, "error out of memory\n");
+			free(nm);
+			return;
+		}
+	}
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the insecure_remove command */
+static void
+do_insecure_remove(SSL* ssl, struct worker* worker, char* arg)
+{
+	size_t nmlen;
+	int nmlabs;
+	uint8_t* nm = NULL;
+	if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
+		return;
+	if(worker->env.anchors)
+		anchors_delete_insecure(worker->env.anchors,
+			LDNS_RR_CLASS_IN, nm);
+	free(nm);
+	send_ok(ssl);
+}
+
+/** do the status command */
+static void
+do_status(SSL* ssl, struct worker* worker)
+{
+	int i;
+	time_t uptime;
+	if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
+		return;
+	if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
+		return;
+	if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
+		return;
+	if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
+		return;
+	for(i=0; i<worker->daemon->mods.num; i++) {
+		if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
+			return;
+	}
+	if(!ssl_printf(ssl, " ]\n"))
+		return;
+	uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
+	if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
+		return;
+	if(!ssl_printf(ssl, "options:%s%s\n" , 
+		(worker->daemon->reuseport?" reuseport":""),
+		(worker->daemon->rc->accept_list?" control(ssl)":"")))
+		return;
+	if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
+		(int)getpid()))
+		return;
+}
+
+/** get age for the mesh state */
+static void
+get_mesh_age(struct mesh_state* m, char* buf, size_t len, 
+	struct module_env* env)
+{
+	if(m->reply_list) {
+		struct timeval d;
+		struct mesh_reply* r = m->reply_list;
+		/* last reply is the oldest */
+		while(r && r->next)
+			r = r->next;
+		timeval_subtract(&d, env->now_tv, &r->start_time);
+		snprintf(buf, len, ARG_LL "d.%6.6d",
+			(long long)d.tv_sec, (int)d.tv_usec);
+	} else {
+		snprintf(buf, len, "-");
+	}
+}
+
+/** get status of a mesh state */
+static void
+get_mesh_status(struct mesh_area* mesh, struct mesh_state* m, 
+	char* buf, size_t len)
+{
+	enum module_ext_state s = m->s.ext_state[m->s.curmod];
+	const char *modname = mesh->mods.mod[m->s.curmod]->name;
+	size_t l;
+	if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
+		m->s.minfo[m->s.curmod]) {
+		/* break into iterator to find out who its waiting for */
+		struct iter_qstate* qstate = (struct iter_qstate*)
+			m->s.minfo[m->s.curmod];
+		struct outbound_list* ol = &qstate->outlist;
+		struct outbound_entry* e;
+		snprintf(buf, len, "%s wait for", modname);
+		l = strlen(buf);
+		buf += l; len -= l;
+		if(ol->first == NULL)
+			snprintf(buf, len, " (empty_list)");
+		for(e = ol->first; e; e = e->next) {
+			snprintf(buf, len, " ");
+			l = strlen(buf);
+			buf += l; len -= l;
+			addr_to_str(&e->qsent->addr, e->qsent->addrlen, 
+				buf, len);
+			l = strlen(buf);
+			buf += l; len -= l;
+		}
+	} else if(s == module_wait_subquery) {
+		/* look in subs from mesh state to see what */
+		char nm[257];
+		struct mesh_state_ref* sub;
+		snprintf(buf, len, "%s wants", modname);
+		l = strlen(buf);
+		buf += l; len -= l;
+		if(m->sub_set.count == 0)
+			snprintf(buf, len, " (empty_list)");
+		RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
+			char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
+			char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
+			dname_str(sub->s->s.qinfo.qname, nm);
+			snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
+				(c?c:"CLASS??"), nm);
+			l = strlen(buf);
+			buf += l; len -= l;
+			free(t);
+			free(c);
+		}
+	} else {
+		snprintf(buf, len, "%s is %s", modname, strextstate(s));
+	}
+}
+
+/** do the dump_requestlist command */
+static void
+do_dump_requestlist(SSL* ssl, struct worker* worker)
+{
+	struct mesh_area* mesh;
+	struct mesh_state* m;
+	int num = 0;
+	char buf[257];
+	char timebuf[32];
+	char statbuf[10240];
+	if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
+		return;
+	if(!ssl_printf(ssl, "#   type cl name    seconds    module status\n"))
+		return;
+	/* show worker mesh contents */
+	mesh = worker->env.mesh;
+	if(!mesh) return;
+	RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
+		char* t = sldns_wire2str_type(m->s.qinfo.qtype);
+		char* c = sldns_wire2str_class(m->s.qinfo.qclass);
+		dname_str(m->s.qinfo.qname, buf);
+		get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
+		get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
+		if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n", 
+			num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
+			statbuf)) {
+			free(t);
+			free(c);
+			return;
+		}
+		num++;
+		free(t);
+		free(c);
+	}
+}
+
+/** structure for argument data for dump infra host */
+struct infra_arg {
+	/** the infra cache */
+	struct infra_cache* infra;
+	/** the SSL connection */
+	SSL* ssl;
+	/** the time now */
+	time_t now;
+	/** ssl failure? stop writing and skip the rest.  If the tcp
+	 * connection is broken, and writes fail, we then stop writing. */
+	int ssl_failed;
+};
+
+/** callback for every host element in the infra cache */
+static void
+dump_infra_host(struct lruhash_entry* e, void* arg)
+{
+	struct infra_arg* a = (struct infra_arg*)arg;
+	struct infra_key* k = (struct infra_key*)e->key;
+	struct infra_data* d = (struct infra_data*)e->data;
+	char ip_str[1024];
+	char name[257];
+	if(a->ssl_failed)
+		return;
+	addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
+	dname_str(k->zonename, name);
+	/* skip expired stuff (only backed off) */
+	if(d->ttl < a->now) {
+		if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
+			if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
+				name, d->rtt.rto))  {
+				a->ssl_failed = 1;
+				return;
+			}
+		}
+		return;
+	}
+	if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d "
+		"tA %d tAAAA %d tother %d "
+		"ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
+		"other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now),
+		d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
+		d->timeout_A, d->timeout_AAAA, d->timeout_other,
+		(int)d->edns_lame_known, (int)d->edns_version,
+		(int)(a->now<d->probedelay?d->probedelay-a->now:0),
+		(int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
+		(int)d->lame_other)) {
+		a->ssl_failed = 1;
+		return;
+	}
+}
+
+/** do the dump_infra command */
+static void
+do_dump_infra(SSL* ssl, struct worker* worker)
+{
+	struct infra_arg arg;
+	arg.infra = worker->env.infra_cache;
+	arg.ssl = ssl;
+	arg.now = *worker->env.now;
+	arg.ssl_failed = 0;
+	slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
+}
+
+/** do the log_reopen command */
+static void
+do_log_reopen(SSL* ssl, struct worker* worker)
+{
+	struct config_file* cfg = worker->env.cfg;
+	send_ok(ssl);
+	log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
+}
+
+/** do the set_option command */
+static void
+do_set_option(SSL* ssl, struct worker* worker, char* arg)
+{
+	char* arg2;
+	if(!find_arg2(ssl, arg, &arg2))
+		return;
+	if(!config_set_option(worker->env.cfg, arg, arg2)) {
+		(void)ssl_printf(ssl, "error setting option\n");
+		return;
+	}
+	send_ok(ssl);
+}
+
+/* routine to printout option values over SSL */
+void remote_get_opt_ssl(char* line, void* arg)
+{
+	SSL* ssl = (SSL*)arg;
+	(void)ssl_printf(ssl, "%s\n", line);
+}
+
+/** do the get_option command */
+static void
+do_get_option(SSL* ssl, struct worker* worker, char* arg)
+{
+	int r;
+	r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
+	if(!r) {
+		(void)ssl_printf(ssl, "error unknown option\n");
+		return;
+	}
+}
+
+/** do the list_forwards command */
+static void
+do_list_forwards(SSL* ssl, struct worker* worker)
+{
+	/* since its a per-worker structure no locks needed */
+	struct iter_forwards* fwds = worker->env.fwds;
+	struct iter_forward_zone* z;
+	struct trust_anchor* a;
+	int insecure;
+	RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
+		if(!z->dp) continue; /* skip empty marker for stub */
+
+		/* see if it is insecure */
+		insecure = 0;
+		if(worker->env.anchors &&
+			(a=anchor_find(worker->env.anchors, z->name,
+			z->namelabs, z->namelen,  z->dclass))) {
+			if(!a->keylist && !a->numDS && !a->numDNSKEY)
+				insecure = 1;
+			lock_basic_unlock(&a->lock);
+		}
+
+		if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"),
+			z->name, z->dclass, z->dp))
+			return;
+	}
+}
+
+/** do the list_stubs command */
+static void
+do_list_stubs(SSL* ssl, struct worker* worker)
+{
+	struct iter_hints_stub* z;
+	struct trust_anchor* a;
+	int insecure;
+	char str[32];
+	RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
+
+		/* see if it is insecure */
+		insecure = 0;
+		if(worker->env.anchors &&
+			(a=anchor_find(worker->env.anchors, z->node.name,
+			z->node.labs, z->node.len,  z->node.dclass))) {
+			if(!a->keylist && !a->numDS && !a->numDNSKEY)
+				insecure = 1;
+			lock_basic_unlock(&a->lock);
+		}
+
+		snprintf(str, sizeof(str), "stub %sprime%s",
+			(z->noprime?"no":""), (insecure?" +i":""));
+		if(!ssl_print_name_dp(ssl, str, z->node.name,
+			z->node.dclass, z->dp))
+			return;
+	}
+}
+
+/** do the list_local_zones command */
+static void
+do_list_local_zones(SSL* ssl, struct worker* worker)
+{
+	struct local_zones* zones = worker->daemon->local_zones;
+	struct local_zone* z;
+	char buf[257];
+	lock_rw_rdlock(&zones->lock);
+	RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
+		lock_rw_rdlock(&z->lock);
+		dname_str(z->name, buf);
+		if(!ssl_printf(ssl, "%s %s\n", buf, 
+			local_zone_type2str(z->type))) {
+			/* failure to print */
+			lock_rw_unlock(&z->lock);
+			lock_rw_unlock(&zones->lock);
+			return;
+		}
+		lock_rw_unlock(&z->lock);
+	}
+	lock_rw_unlock(&zones->lock);
+}
+
+/** do the list_local_data command */
+static void
+do_list_local_data(SSL* ssl, struct worker* worker)
+{
+	struct local_zones* zones = worker->daemon->local_zones;
+	struct local_zone* z;
+	struct local_data* d;
+	struct local_rrset* p;
+	char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
+	size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
+	lock_rw_rdlock(&zones->lock);
+	RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
+		lock_rw_rdlock(&z->lock);
+		RBTREE_FOR(d, struct local_data*, &z->data) {
+			for(p = d->rrsets; p; p = p->next) {
+				struct packed_rrset_data* d =
+					(struct packed_rrset_data*)p->rrset->entry.data;
+				size_t i;
+				for(i=0; i<d->count + d->rrsig_count; i++) {
+					if(!packed_rr_to_string(p->rrset, i,
+						0, s, slen)) {
+						if(!ssl_printf(ssl, "BADRR\n"))
+							return;
+					}
+				        if(!ssl_printf(ssl, "%s\n", s))
+						return;
+				}
+			}
+		}
+		lock_rw_unlock(&z->lock);
+	}
+	lock_rw_unlock(&zones->lock);
+}
+
+/** tell other processes to execute the command */
+static void
+distribute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd)
+{
+	int i;
+	if(!cmd || !ssl) 
+		return;
+	/* skip i=0 which is me */
+	for(i=1; i<rc->worker->daemon->num; i++) {
+		worker_send_cmd(rc->worker->daemon->workers[i],
+			worker_cmd_remote);
+		if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
+			(uint8_t*)cmd, strlen(cmd)+1, 0)) {
+			ssl_printf(ssl, "error could not distribute cmd\n");
+			return;
+		}
+	}
+}
+
+/** check for name with end-of-string, space or tab after it */
+static int
+cmdcmp(char* p, const char* cmd, size_t len)
+{
+	return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
+}
+
+/** execute a remote control command */
+static void
+execute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd, 
+	struct worker* worker)
+{
+	char* p = skipwhite(cmd);
+	/* compare command */
+	if(cmdcmp(p, "stop", 4)) {
+		do_stop(ssl, rc);
+		return;
+	} else if(cmdcmp(p, "reload", 6)) {
+		do_reload(ssl, rc);
+		return;
+	} else if(cmdcmp(p, "stats_noreset", 13)) {
+		do_stats(ssl, rc, 0);
+		return;
+	} else if(cmdcmp(p, "stats", 5)) {
+		do_stats(ssl, rc, 1);
+		return;
+	} else if(cmdcmp(p, "status", 6)) {
+		do_status(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "dump_cache", 10)) {
+		(void)dump_cache(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "load_cache", 10)) {
+		if(load_cache(ssl, worker)) send_ok(ssl);
+		return;
+	} else if(cmdcmp(p, "list_forwards", 13)) {
+		do_list_forwards(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "list_stubs", 10)) {
+		do_list_stubs(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "list_local_zones", 16)) {
+		do_list_local_zones(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "list_local_data", 15)) {
+		do_list_local_data(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "stub_add", 8)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_stub_add(ssl, worker, skipwhite(p+8));
+		return;
+	} else if(cmdcmp(p, "stub_remove", 11)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_stub_remove(ssl, worker, skipwhite(p+11));
+		return;
+	} else if(cmdcmp(p, "forward_add", 11)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_forward_add(ssl, worker, skipwhite(p+11));
+		return;
+	} else if(cmdcmp(p, "forward_remove", 14)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_forward_remove(ssl, worker, skipwhite(p+14));
+		return;
+	} else if(cmdcmp(p, "insecure_add", 12)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_insecure_add(ssl, worker, skipwhite(p+12));
+		return;
+	} else if(cmdcmp(p, "insecure_remove", 15)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_insecure_remove(ssl, worker, skipwhite(p+15));
+		return;
+	} else if(cmdcmp(p, "forward", 7)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_forward(ssl, worker, skipwhite(p+7));
+		return;
+	} else if(cmdcmp(p, "flush_stats", 11)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_flush_stats(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "flush_requestlist", 17)) {
+		/* must always distribute this cmd */
+		if(rc) distribute_cmd(rc, ssl, cmd);
+		do_flush_requestlist(ssl, worker);
+		return;
+	} else if(cmdcmp(p, "lookup", 6)) {
+		do_lookup(ssl, worker, skipwhite(p+6));
+		return;
+	}
+
+#ifdef THREADS_DISABLED
+	/* other processes must execute the command as well */
+	/* commands that should not be distributed, returned above. */
+	if(rc) { /* only if this thread is the master (rc) thread */
+		/* done before the code below, which may split the string */
+		distribute_cmd(rc, ssl, cmd);
+	}
+#endif
+	if(cmdcmp(p, "verbosity", 9)) {
+		do_verbosity(ssl, skipwhite(p+9));
+	} else if(cmdcmp(p, "local_zone_remove", 17)) {
+		do_zone_remove(ssl, worker, skipwhite(p+17));
+	} else if(cmdcmp(p, "local_zone", 10)) {
+		do_zone_add(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "local_data_remove", 17)) {
+		do_data_remove(ssl, worker, skipwhite(p+17));
+	} else if(cmdcmp(p, "local_data", 10)) {
+		do_data_add(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "flush_zone", 10)) {
+		do_flush_zone(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "flush_type", 10)) {
+		do_flush_type(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "flush_infra", 11)) {
+		do_flush_infra(ssl, worker, skipwhite(p+11));
+	} else if(cmdcmp(p, "flush", 5)) {
+		do_flush_name(ssl, worker, skipwhite(p+5));
+	} else if(cmdcmp(p, "dump_requestlist", 16)) {
+		do_dump_requestlist(ssl, worker);
+	} else if(cmdcmp(p, "dump_infra", 10)) {
+		do_dump_infra(ssl, worker);
+	} else if(cmdcmp(p, "log_reopen", 10)) {
+		do_log_reopen(ssl, worker);
+	} else if(cmdcmp(p, "set_option", 10)) {
+		do_set_option(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "get_option", 10)) {
+		do_get_option(ssl, worker, skipwhite(p+10));
+	} else if(cmdcmp(p, "flush_bogus", 11)) {
+		do_flush_bogus(ssl, worker);
+	} else if(cmdcmp(p, "flush_negative", 14)) {
+		do_flush_negative(ssl, worker);
+	} else {
+		(void)ssl_printf(ssl, "error unknown command '%s'\n", p);
+	}
+}
+
+void 
+daemon_remote_exec(struct worker* worker)
+{
+	/* read the cmd string */
+	uint8_t* msg = NULL;
+	uint32_t len = 0;
+	if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
+		log_err("daemon_remote_exec: tube_read_msg failed");
+		return;
+	}
+	verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
+	execute_cmd(NULL, NULL, (char*)msg, worker);
+	free(msg);
+}
+
+/** handle remote control request */
+static void
+handle_req(struct daemon_remote* rc, struct rc_state* s, SSL* ssl)
+{
+	int r;
+	char pre[10];
+	char magic[7];
+	char buf[1024];
+#ifdef USE_WINSOCK
+	/* makes it possible to set the socket blocking again. */
+	/* basically removes it from winsock_event ... */
+	WSAEventSelect(s->c->fd, NULL, 0);
+#endif
+	fd_set_block(s->c->fd);
+
+	/* try to read magic UBCT[version]_space_ string */
+	ERR_clear_error();
+	if((r=SSL_read(ssl, magic, (int)sizeof(magic)-1)) <= 0) {
+		if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN)
+			return;
+		log_crypto_err("could not SSL_read");
+		return;
+	}
+	magic[6] = 0;
+	if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
+		verbose(VERB_QUERY, "control connection has bad magic string");
+		/* probably wrong tool connected, ignore it completely */
+		return;
+	}
+
+	/* read the command line */
+	if(!ssl_read_line(ssl, buf, sizeof(buf))) {
+		return;
+	}
+	snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
+	if(strcmp(magic, pre) != 0) {
+		verbose(VERB_QUERY, "control connection had bad "
+			"version %s, cmd: %s", magic, buf);
+		ssl_printf(ssl, "error version mismatch\n");
+		return;
+	}
+	verbose(VERB_DETAIL, "control cmd: %s", buf);
+
+	/* figure out what to do */
+	execute_cmd(rc, ssl, buf, rc->worker);
+}
+
+int remote_control_callback(struct comm_point* c, void* arg, int err, 
+	struct comm_reply* ATTR_UNUSED(rep))
+{
+	struct rc_state* s = (struct rc_state*)arg;
+	struct daemon_remote* rc = s->rc;
+	int r;
+	if(err != NETEVENT_NOERROR) {
+		if(err==NETEVENT_TIMEOUT) 
+			log_err("remote control timed out");
+		clean_point(rc, s);
+		return 0;
+	}
+	/* (continue to) setup the SSL connection */
+	ERR_clear_error();
+	r = SSL_do_handshake(s->ssl);
+	if(r != 1) {
+		int r2 = SSL_get_error(s->ssl, r);
+		if(r2 == SSL_ERROR_WANT_READ) {
+			if(s->shake_state == rc_hs_read) {
+				/* try again later */
+				return 0;
+			}
+			s->shake_state = rc_hs_read;
+			comm_point_listen_for_rw(c, 1, 0);
+			return 0;
+		} else if(r2 == SSL_ERROR_WANT_WRITE) {
+			if(s->shake_state == rc_hs_write) {
+				/* try again later */
+				return 0;
+			}
+			s->shake_state = rc_hs_write;
+			comm_point_listen_for_rw(c, 0, 1);
+			return 0;
+		} else {
+			if(r == 0)
+				log_err("remote control connection closed prematurely");
+			log_addr(1, "failed connection from",
+				&s->c->repinfo.addr, s->c->repinfo.addrlen);
+			log_crypto_err("remote control failed ssl");
+			clean_point(rc, s);
+			return 0;
+		}
+	}
+	s->shake_state = rc_none;
+
+	/* once handshake has completed, check authentication */
+	if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
+		X509* x = SSL_get_peer_certificate(s->ssl);
+		if(!x) {
+			verbose(VERB_DETAIL, "remote control connection "
+				"provided no client certificate");
+			clean_point(rc, s);
+			return 0;
+		}
+		verbose(VERB_ALGO, "remote control connection authenticated");
+		X509_free(x);
+	} else {
+		verbose(VERB_DETAIL, "remote control connection failed to "
+			"authenticate with client certificate");
+		clean_point(rc, s);
+		return 0;
+	}
+
+	/* if OK start to actually handle the request */
+	handle_req(rc, s, s->ssl);
+
+	verbose(VERB_ALGO, "remote control operation completed");
+	clean_point(rc, s);
+	return 0;
+}