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+/*
+ * 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 REGENTS 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 <ldns/ldns.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"
+
+#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);
+ 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"%u\n", nm,
+ (unsigned)s->svr.num_queries)) return 0;
+ if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%u\n", nm,
+ (unsigned)(s->svr.num_queries
+ - s->svr.num_queries_missed_cache))) return 0;
+ if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%u\n", nm,
+ (unsigned)s->svr.num_queries_missed_cache)) return 0;
+ if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%u\n", nm,
+ (unsigned)s->svr.num_queries_prefetch)) return 0;
+ if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%u\n", nm,
+ (unsigned)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"%u\n", nm,
+ (unsigned)s->svr.max_query_list_size)) return 0;
+ if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%u\n", nm,
+ (unsigned)s->mesh_jostled)) return 0;
+ if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%u\n", nm,
+ (unsigned)s->mesh_dropped)) return 0;
+ if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%u\n", nm,
+ (unsigned)s->mesh_num_states)) return 0;
+ if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%u\n", nm,
+ (unsigned)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"%d.%6.6d\n", nm,
+ (int)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, 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%u\n", desc, (unsigned)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"%d.%6.6d\n",
+ (unsigned)now.tv_sec, (unsigned)now.tv_usec)) return 0;
+ if(!ssl_printf(ssl, "time.up"SQ"%d.%6.6d\n",
+ (unsigned)up.tv_sec, (unsigned)up.tv_usec)) return 0;
+ if(!ssl_printf(ssl, "time.elapsed"SQ"%d.%6.6d\n",
+ (unsigned)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=%u\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)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 ldns_rr_descriptor* desc;
+ const ldns_lookup_table* lt;
+ /* TYPE */
+ for(i=0; i<STATS_QTYPE_NUM; i++) {
+ if(inhibit_zero && s->svr.qtype[i] == 0)
+ continue;
+ desc = ldns_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"%u\n",
+ nm, (unsigned)s->svr.qtype[i])) return 0;
+ }
+ if(!inhibit_zero || s->svr.qtype_big) {
+ if(!ssl_printf(ssl, "num.query.type.other"SQ"%u\n",
+ (unsigned)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 = ldns_lookup_by_id(ldns_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"%u\n",
+ nm, (unsigned)s->svr.qclass[i])) return 0;
+ }
+ if(!inhibit_zero || s->svr.qclass_big) {
+ if(!ssl_printf(ssl, "num.query.class.other"SQ"%u\n",
+ (unsigned)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 = ldns_lookup_by_id(ldns_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"%u\n",
+ nm, (unsigned)s->svr.qopcode[i])) return 0;
+ }
+ /* transport */
+ if(!ssl_printf(ssl, "num.query.tcp"SQ"%u\n",
+ (unsigned)s->svr.qtcp)) return 0;
+ if(!ssl_printf(ssl, "num.query.ipv6"SQ"%u\n",
+ (unsigned)s->svr.qipv6)) return 0;
+ /* flags */
+ if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%u\n",
+ (unsigned)s->svr.qbit_QR)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%u\n",
+ (unsigned)s->svr.qbit_AA)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%u\n",
+ (unsigned)s->svr.qbit_TC)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%u\n",
+ (unsigned)s->svr.qbit_RD)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%u\n",
+ (unsigned)s->svr.qbit_RA)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%u\n",
+ (unsigned)s->svr.qbit_Z)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%u\n",
+ (unsigned)s->svr.qbit_AD)) return 0;
+ if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%u\n",
+ (unsigned)s->svr.qbit_CD)) return 0;
+ if(!ssl_printf(ssl, "num.query.edns.present"SQ"%u\n",
+ (unsigned)s->svr.qEDNS)) return 0;
+ if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%u\n",
+ (unsigned)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 = ldns_lookup_by_id(ldns_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"%u\n",
+ nm, (unsigned)s->svr.ans_rcode[i])) return 0;
+ }
+ if(!inhibit_zero || s->svr.ans_rcode_nodata) {
+ if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%u\n",
+ (unsigned)s->svr.ans_rcode_nodata)) return 0;
+ }
+ /* validation */
+ if(!ssl_printf(ssl, "num.answer.secure"SQ"%u\n",
+ (unsigned)s->svr.ans_secure)) return 0;
+ if(!ssl_printf(ssl, "num.answer.bogus"SQ"%u\n",
+ (unsigned)s->svr.ans_bogus)) return 0;
+ if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%u\n",
+ (unsigned)s->svr.rrset_bogus)) return 0;
+ /* threat detection */
+ if(!ssl_printf(ssl, "unwanted.queries"SQ"%u\n",
+ (unsigned)s->svr.unwanted_queries)) return 0;
+ if(!ssl_printf(ssl, "unwanted.replies"SQ"%u\n",
+ (unsigned)s->svr.unwanted_replies)) 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)
+{
+ ldns_rdf* rdf;
+ *res = NULL;
+ *len = 0;
+ *labs = 0;
+ rdf = ldns_dname_new_frm_str(str);
+ if(!rdf) {
+ ssl_printf(ssl, "error cannot parse name %s\n", str);
+ return 0;
+ }
+ *res = memdup(ldns_rdf_data(rdf), ldns_rdf_size(rdf));
+ ldns_rdf_deep_free(rdf);
+ 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_quick_lock(&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_quick_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_quick_unlock(&worker->daemon->local_zones->lock);
+ ssl_printf(ssl, "error out of memory\n");
+ return;
+ }
+ lock_quick_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_quick_lock(&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_quick_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,
+ worker->env.scratch_buffer)) {
+ 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 = ldns_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 */
+ uint32_t now;
+ /** time to invalidate to */
+ uint32_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 %u rrsets, %u messages "
+ "and %u key entries\n", (unsigned)inf.num_rrsets,
+ (unsigned)inf.num_msgs, (unsigned)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, 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 = ldns_rr_class2str(dclass);
+ dname_str(nm, buf);
+ if(!ssl_printf(ssl, "%s %s %s: ", buf, c, 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");
+ 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");
+ delegpt_free_mlc(dp);
+ 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) {
+ 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");
+ delegpt_free_mlc(dp);
+ 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)
+ 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) {
+ 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) 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) anchors_delete_insecure(worker->env.anchors,
+ LDNS_RR_CLASS_IN, nm);
+ delegpt_free_mlc(dp);
+ 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)
+ 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 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: %u seconds\n", (unsigned)uptime))
+ 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, "%d.%6.6d", (int)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 = ldns_rr_type2str(sub->s->s.qinfo.qtype);
+ char* c = ldns_rr_class2str(sub->s->s.qinfo.qclass);
+ dname_str(sub->s->s.qinfo.qname, nm);
+ snprintf(buf, len, " %s %s %s", t, c, 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 = ldns_rr_type2str(m->s.qinfo.qtype);
+ char* c = ldns_rr_class2str(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, c, 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 */
+ uint32_t now;
+};
+
+/** 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];
+ 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)) return;
+ }
+ return;
+ }
+ if(!ssl_printf(a->ssl, "%s %s ttl %d 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, (int)(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))
+ 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;
+ 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;
+ RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
+ if(!z->dp) continue; /* skip empty marker for stub */
+ if(!ssl_print_name_dp(ssl, "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;
+ RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
+ if(!ssl_print_name_dp(ssl,
+ z->noprime?"stub noprime":"stub prime", 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_quick_lock(&zones->lock);
+ RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
+ lock_rw_rdlock(&z->lock);
+ dname_str(z->name, buf);
+ (void)ssl_printf(ssl, "%s %s\n", buf,
+ local_zone_type2str(z->type));
+ lock_rw_unlock(&z->lock);
+ }
+ lock_quick_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;
+ lock_quick_lock(&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) {
+ ldns_rr_list* rr = packed_rrset_to_rr_list(
+ p->rrset, worker->env.scratch_buffer);
+ char* str = ldns_rr_list2str(rr);
+ (void)ssl_printf(ssl, "%s", str);
+ free(str);
+ ldns_rr_list_free(rr);
+ }
+ }
+ lock_rw_unlock(&z->lock);
+ }
+ lock_quick_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, "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 {
+ (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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 16:23:56 +0000