contrib/unbound/daemon/remote.c

   1 /*
   2  * daemon/remote.c - remote control for the unbound daemon.
   3  *
   4  * Copyright (c) 2008, NLnet Labs. All rights reserved.
   5  *
   6  * This software is open source.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * Redistributions of source code must retain the above copyright notice,
  13  * this list of conditions and the following disclaimer.
  14  *
  15  * Redistributions in binary form must reproduce the above copyright notice,
  16  * this list of conditions and the following disclaimer in the documentation
  17  * and/or other materials provided with the distribution.
  18  *
  19  * Neither the name of the NLNET LABS nor the names of its contributors may
  20  * be used to endorse or promote products derived from this software without
  21  * specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  29  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  30  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /**
  37  * \file
  38  *
  39  * This file contains the remote control functionality for the daemon.
  40  * The remote control can be performed using either the commandline
  41  * unbound-control tool, or a TLS capable web browser.
  42  * The channel is secured using TLSv1, and certificates.
  43  * Both the server and the client(control tool) have their own keys.
  44  */
  45 #include "config.h"
  46 #ifdef HAVE_OPENSSL_ERR_H
  47 #include <openssl/err.h>
  48 #endif
  49 #ifdef HAVE_OPENSSL_DH_H
  50 #include <openssl/dh.h>
  51 #endif
  52 #ifdef HAVE_OPENSSL_BN_H
  53 #include <openssl/bn.h>
  54 #endif
  55
  56 #include <ctype.h>
  57 #include "daemon/remote.h"
  58 #include "daemon/worker.h"
  59 #include "daemon/daemon.h"
  60 #include "daemon/stats.h"
  61 #include "daemon/cachedump.h"
  62 #include "util/log.h"
  63 #include "util/config_file.h"
  64 #include "util/net_help.h"
  65 #include "util/module.h"
  66 #include "services/listen_dnsport.h"
  67 #include "services/cache/rrset.h"
  68 #include "services/cache/infra.h"
  69 #include "services/mesh.h"
  70 #include "services/localzone.h"
  71 #include "services/authzone.h"
  72 #include "services/rpz.h"
  73 #include "util/storage/slabhash.h"
  74 #include "util/fptr_wlist.h"
  75 #include "util/data/dname.h"
  76 #include "validator/validator.h"
  77 #include "validator/val_kcache.h"
  78 #include "validator/val_kentry.h"
  79 #include "validator/val_anchor.h"
  80 #include "iterator/iterator.h"
  81 #include "iterator/iter_fwd.h"
  82 #include "iterator/iter_hints.h"
  83 #include "iterator/iter_delegpt.h"
  84 #include "services/outbound_list.h"
  85 #include "services/outside_network.h"
  86 #include "sldns/str2wire.h"
  87 #include "sldns/parseutil.h"
  88 #include "sldns/wire2str.h"
  89 #include "sldns/sbuffer.h"
  90
  91 #ifdef HAVE_SYS_TYPES_H
  92 #  include <sys/types.h>
  93 #endif
  94 #ifdef HAVE_SYS_STAT_H
  95 #include <sys/stat.h>
  96 #endif
  97 #ifdef HAVE_NETDB_H
  98 #include <netdb.h>
  99 #endif
 100
 101 /* just for portability */
 102 #ifdef SQ
 103 #undef SQ
 104 #endif
 105
 106 /** what to put on statistics lines between var and value, ": " or "=" */
 107 #define SQ "="
 108 /** if true, inhibits a lot of =0 lines from the stats output */
 109 static const int inhibit_zero = 1;
 110
 111 /** subtract timers and the values do not overflow or become negative */
 112 static void
 113 timeval_subtract(struct timeval* d, const struct timeval* end,
 114         const struct timeval* start)
 115 {
 116 #ifndef S_SPLINT_S
 117         time_t end_usec = end->tv_usec;
 118         d->tv_sec = end->tv_sec - start->tv_sec;
 119         if(end_usec < start->tv_usec) {
 120                 end_usec += 1000000;
 121                 d->tv_sec--;
 122         }
 123         d->tv_usec = end_usec - start->tv_usec;
 124 #endif
 125 }
 126
 127 /** divide sum of timers to get average */
 128 static void
 129 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d)
 130 {
 131 #ifndef S_SPLINT_S
 132         size_t leftover;
 133         if(d == 0) {
 134                 avg->tv_sec = 0;
 135                 avg->tv_usec = 0;
 136                 return;
 137         }
 138         avg->tv_sec = sum->tv_sec / d;
 139         avg->tv_usec = sum->tv_usec / d;
 140         /* handle fraction from seconds divide */
 141         leftover = sum->tv_sec - avg->tv_sec*d;
 142         avg->tv_usec += (leftover*1000000)/d;
 143 #endif
 144 }
 145
 146 static int
 147 remote_setup_ctx(struct daemon_remote* rc, struct config_file* cfg)
 148 {
 149         char* s_cert;
 150         char* s_key;
 151         rc->ctx = SSL_CTX_new(SSLv23_server_method());
 152         if(!rc->ctx) {
 153                 log_crypto_err("could not SSL_CTX_new");
 154                 return 0;
 155         }
 156         if(!listen_sslctx_setup(rc->ctx)) {
 157                 return 0;
 158         }
 159
 160         s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
 161         s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
 162         if(!s_cert || !s_key) {
 163                 log_err("out of memory in remote control fname");
 164                 goto setup_error;
 165         }
 166         verbose(VERB_ALGO, "setup SSL certificates");
 167         if (!SSL_CTX_use_certificate_chain_file(rc->ctx,s_cert)) {
 168                 log_err("Error for server-cert-file: %s", s_cert);
 169                 log_crypto_err("Error in SSL_CTX use_certificate_chain_file");
 170                 goto setup_error;
 171         }
 172         if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) {
 173                 log_err("Error for server-key-file: %s", s_key);
 174                 log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
 175                 goto setup_error;
 176         }
 177         if(!SSL_CTX_check_private_key(rc->ctx)) {
 178                 log_err("Error for server-key-file: %s", s_key);
 179                 log_crypto_err("Error in SSL_CTX check_private_key");
 180                 goto setup_error;
 181         }
 182         listen_sslctx_setup_2(rc->ctx);
 183         if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) {
 184                 log_crypto_err("Error setting up SSL_CTX verify locations");
 185         setup_error:
 186                 free(s_cert);
 187                 free(s_key);
 188                 return 0;
 189         }
 190         SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert));
 191         SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL);
 192         free(s_cert);
 193         free(s_key);
 194         return 1;
 195 }
 196
 197 struct daemon_remote*
 198 daemon_remote_create(struct config_file* cfg)
 199 {
 200         struct daemon_remote* rc = (struct daemon_remote*)calloc(1,
 201                 sizeof(*rc));
 202         if(!rc) {
 203                 log_err("out of memory in daemon_remote_create");
 204                 return NULL;
 205         }
 206         rc->max_active = 10;
 207
 208         if(!cfg->remote_control_enable) {
 209                 rc->ctx = NULL;
 210                 return rc;
 211         }
 212         if(options_remote_is_address(cfg) && cfg->control_use_cert) {
 213                 if(!remote_setup_ctx(rc, cfg)) {
 214                         daemon_remote_delete(rc);
 215                         return NULL;
 216                 }
 217                 rc->use_cert = 1;
 218         } else {
 219                 struct config_strlist* p;
 220                 rc->ctx = NULL;
 221                 rc->use_cert = 0;
 222                 if(!options_remote_is_address(cfg))
 223                   for(p = cfg->control_ifs.first; p; p = p->next) {
 224                         if(p->str && p->str[0] != '/')
 225                                 log_warn("control-interface %s is not using TLS, but plain transfer, because first control-interface in config file is a local socket (starts with a /).", p->str);
 226                 }
 227         }
 228         return rc;
 229 }
 230
 231 void daemon_remote_clear(struct daemon_remote* rc)
 232 {
 233         struct rc_state* p, *np;
 234         if(!rc) return;
 235         /* but do not close the ports */
 236         listen_list_delete(rc->accept_list);
 237         rc->accept_list = NULL;
 238         /* do close these sockets */
 239         p = rc->busy_list;
 240         while(p) {
 241                 np = p->next;
 242                 if(p->ssl)
 243                         SSL_free(p->ssl);
 244                 comm_point_delete(p->c);
 245                 free(p);
 246                 p = np;
 247         }
 248         rc->busy_list = NULL;
 249         rc->active = 0;
 250         rc->worker = NULL;
 251 }
 252
 253 void daemon_remote_delete(struct daemon_remote* rc)
 254 {
 255         if(!rc) return;
 256         daemon_remote_clear(rc);
 257         if(rc->ctx) {
 258                 SSL_CTX_free(rc->ctx);
 259         }
 260         free(rc);
 261 }
 262
 263 /**
 264  * Add and open a new control port
 265  * @param ip: ip str
 266  * @param nr: port nr
 267  * @param list: list head
 268  * @param noproto_is_err: if lack of protocol support is an error.
 269  * @param cfg: config with username for chown of unix-sockets.
 270  * @return false on failure.
 271  */
 272 static int
 273 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err,
 274         struct config_file* cfg)
 275 {
 276         struct addrinfo hints;
 277         struct addrinfo* res;
 278         struct listen_port* n;
 279         int noproto = 0;
 280         int fd, r;
 281         char port[15];
 282         snprintf(port, sizeof(port), "%d", nr);
 283         port[sizeof(port)-1]=0;
 284         memset(&hints, 0, sizeof(hints));
 285         log_assert(ip);
 286
 287         if(ip[0] == '/') {
 288                 /* This looks like a local socket */
 289                 fd = create_local_accept_sock(ip, &noproto, cfg->use_systemd);
 290                 /*
 291                  * Change socket ownership and permissions so users other
 292                  * than root can access it provided they are in the same
 293                  * group as the user we run as.
 294                  */
 295                 if(fd != -1) {
 296 #ifdef HAVE_CHOWN
 297                         if (cfg->username && cfg->username[0] &&
 298                                 cfg_uid != (uid_t)-1) {
 299                                 if(chown(ip, cfg_uid, cfg_gid) == -1)
 300                                         verbose(VERB_QUERY, "cannot chown %u.%u %s: %s",
 301                                           (unsigned)cfg_uid, (unsigned)cfg_gid,
 302                                           ip, strerror(errno));
 303                         }
 304                         chmod(ip, (mode_t)(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP));
 305 #else
 306                         (void)cfg;
 307 #endif
 308                 }
 309         } else {
 310                 hints.ai_socktype = SOCK_STREAM;
 311                 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
 312                 if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
 313 #ifdef USE_WINSOCK
 314                         if(!noproto_is_err && r == EAI_NONAME) {
 315                                 /* tried to lookup the address as name */
 316                                 return 1; /* return success, but do nothing */
 317                         }
 318 #endif /* USE_WINSOCK */
 319                         log_err("control interface %s:%s getaddrinfo: %s %s",
 320                                 ip?ip:"default", port, gai_strerror(r),
 321 #ifdef EAI_SYSTEM
 322                                 r==EAI_SYSTEM?(char*)strerror(errno):""
 323 #else
 324                                 ""
 325 #endif
 326                         );
 327                         return 0;
 328                 }
 329
 330                 /* open fd */
 331                 fd = create_tcp_accept_sock(res, 1, &noproto, 0,
 332                         cfg->ip_transparent, 0, 0, cfg->ip_freebind,
 333                         cfg->use_systemd, cfg->ip_dscp);
 334                 freeaddrinfo(res);
 335         }
 336
 337         if(fd == -1 && noproto) {
 338                 if(!noproto_is_err)
 339                         return 1; /* return success, but do nothing */
 340                 log_err("cannot open control interface %s %d : "
 341                         "protocol not supported", ip, nr);
 342                 return 0;
 343         }
 344         if(fd == -1) {
 345                 log_err("cannot open control interface %s %d", ip, nr);
 346                 return 0;
 347         }
 348
 349         /* alloc */
 350         n = (struct listen_port*)calloc(1, sizeof(*n));
 351         if(!n) {
 352                 sock_close(fd);
 353                 log_err("out of memory");
 354                 return 0;
 355         }
 356         n->next = *list;
 357         *list = n;
 358         n->fd = fd;
 359         return 1;
 360 }
 361
 362 struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 363 {
 364         struct listen_port* l = NULL;
 365         log_assert(cfg->remote_control_enable && cfg->control_port);
 366         if(cfg->control_ifs.first) {
 367                 struct config_strlist* p;
 368                 for(p = cfg->control_ifs.first; p; p = p->next) {
 369                         if(!add_open(p->str, cfg->control_port, &l, 1, cfg)) {
 370                                 listening_ports_free(l);
 371                                 return NULL;
 372                         }
 373                 }
 374         } else {
 375                 /* defaults */
 376                 if(cfg->do_ip6 &&
 377                         !add_open("::1", cfg->control_port, &l, 0, cfg)) {
 378                         listening_ports_free(l);
 379                         return NULL;
 380                 }
 381                 if(cfg->do_ip4 &&
 382                         !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) {
 383                         listening_ports_free(l);
 384                         return NULL;
 385                 }
 386         }
 387         return l;
 388 }
 389
 390 /** open accept commpoint */
 391 static int
 392 accept_open(struct daemon_remote* rc, int fd)
 393 {
 394         struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
 395         if(!n) {
 396                 log_err("out of memory");
 397                 return 0;
 398         }
 399         n->next = rc->accept_list;
 400         rc->accept_list = n;
 401         /* open commpt */
 402         n->com = comm_point_create_raw(rc->worker->base, fd, 0,
 403                 &remote_accept_callback, rc);
 404         if(!n->com)
 405                 return 0;
 406         /* keep this port open, its fd is kept in the rc portlist */
 407         n->com->do_not_close = 1;
 408         return 1;
 409 }
 410
 411 int daemon_remote_open_accept(struct daemon_remote* rc,
 412         struct listen_port* ports, struct worker* worker)
 413 {
 414         struct listen_port* p;
 415         rc->worker = worker;
 416         for(p = ports; p; p = p->next) {
 417                 if(!accept_open(rc, p->fd)) {
 418                         log_err("could not create accept comm point");
 419                         return 0;
 420                 }
 421         }
 422         return 1;
 423 }
 424
 425 void daemon_remote_stop_accept(struct daemon_remote* rc)
 426 {
 427         struct listen_list* p;
 428         for(p=rc->accept_list; p; p=p->next) {
 429                 comm_point_stop_listening(p->com);
 430         }
 431 }
 432
 433 void daemon_remote_start_accept(struct daemon_remote* rc)
 434 {
 435         struct listen_list* p;
 436         for(p=rc->accept_list; p; p=p->next) {
 437                 comm_point_start_listening(p->com, -1, -1);
 438         }
 439 }
 440
 441 int remote_accept_callback(struct comm_point* c, void* arg, int err,
 442         struct comm_reply* ATTR_UNUSED(rep))
 443 {
 444         struct daemon_remote* rc = (struct daemon_remote*)arg;
 445         struct sockaddr_storage addr;
 446         socklen_t addrlen;
 447         int newfd;
 448         struct rc_state* n;
 449         if(err != NETEVENT_NOERROR) {
 450                 log_err("error %d on remote_accept_callback", err);
 451                 return 0;
 452         }
 453         /* perform the accept */
 454         newfd = comm_point_perform_accept(c, &addr, &addrlen);
 455         if(newfd == -1)
 456                 return 0;
 457         /* create new commpoint unless we are servicing already */
 458         if(rc->active >= rc->max_active) {
 459                 log_warn("drop incoming remote control: too many connections");
 460         close_exit:
 461                 sock_close(newfd);
 462                 return 0;
 463         }
 464
 465         /* setup commpoint to service the remote control command */
 466         n = (struct rc_state*)calloc(1, sizeof(*n));
 467         if(!n) {
 468                 log_err("out of memory");
 469                 goto close_exit;
 470         }
 471         n->fd = newfd;
 472         /* start in reading state */
 473         n->c = comm_point_create_raw(rc->worker->base, newfd, 0,
 474                 &remote_control_callback, n);
 475         if(!n->c) {
 476                 log_err("out of memory");
 477                 free(n);
 478                 goto close_exit;
 479         }
 480         log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
 481         n->c->do_not_close = 0;
 482         comm_point_stop_listening(n->c);
 483         comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
 484         memcpy(&n->c->repinfo.addr, &addr, addrlen);
 485         n->c->repinfo.addrlen = addrlen;
 486         if(rc->use_cert) {
 487                 n->shake_state = rc_hs_read;
 488                 n->ssl = SSL_new(rc->ctx);
 489                 if(!n->ssl) {
 490                         log_crypto_err("could not SSL_new");
 491                         comm_point_delete(n->c);
 492                         free(n);
 493                         goto close_exit;
 494                 }
 495                 SSL_set_accept_state(n->ssl);
 496                 (void)SSL_set_mode(n->ssl, (long)SSL_MODE_AUTO_RETRY);
 497                 if(!SSL_set_fd(n->ssl, newfd)) {
 498                         log_crypto_err("could not SSL_set_fd");
 499                         SSL_free(n->ssl);
 500                         comm_point_delete(n->c);
 501                         free(n);
 502                         goto close_exit;
 503                 }
 504         } else {
 505                 n->ssl = NULL;
 506         }
 507
 508         n->rc = rc;
 509         n->next = rc->busy_list;
 510         rc->busy_list = n;
 511         rc->active ++;
 512
 513         /* perform the first nonblocking read already, for windows,
 514          * so it can return wouldblock. could be faster too. */
 515         (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
 516         return 0;
 517 }
 518
 519 /** delete from list */
 520 static void
 521 state_list_remove_elem(struct rc_state** list, struct comm_point* c)
 522 {
 523         while(*list) {
 524                 if( (*list)->c == c) {
 525                         *list = (*list)->next;
 526                         return;
 527                 }
 528                 list = &(*list)->next;
 529         }
 530 }
 531
 532 /** decrease active count and remove commpoint from busy list */
 533 static void
 534 clean_point(struct daemon_remote* rc, struct rc_state* s)
 535 {
 536         state_list_remove_elem(&rc->busy_list, s->c);
 537         rc->active --;
 538         if(s->ssl) {
 539                 SSL_shutdown(s->ssl);
 540                 SSL_free(s->ssl);
 541         }
 542         comm_point_delete(s->c);
 543         free(s);
 544 }
 545
 546 int
 547 ssl_print_text(RES* res, const char* text)
 548 {
 549         int r;
 550         if(!res)
 551                 return 0;
 552         if(res->ssl) {
 553                 ERR_clear_error();
 554                 if((r=SSL_write(res->ssl, text, (int)strlen(text))) <= 0) {
 555                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 556                                 verbose(VERB_QUERY, "warning, in SSL_write, peer "
 557                                         "closed connection");
 558                                 return 0;
 559                         }
 560                         log_crypto_err("could not SSL_write");
 561                         return 0;
 562                 }
 563         } else {
 564                 size_t at = 0;
 565                 while(at < strlen(text)) {
 566                         ssize_t r = send(res->fd, text+at, strlen(text)-at, 0);
 567                         if(r == -1) {
 568                                 if(errno == EAGAIN || errno == EINTR)
 569                                         continue;
 570                                 log_err("could not send: %s",
 571                                         sock_strerror(errno));
 572                                 return 0;
 573                         }
 574                         at += r;
 575                 }
 576         }
 577         return 1;
 578 }
 579
 580 /** print text over the ssl connection */
 581 static int
 582 ssl_print_vmsg(RES* ssl, const char* format, va_list args)
 583 {
 584         char msg[1024];
 585         vsnprintf(msg, sizeof(msg), format, args);
 586         return ssl_print_text(ssl, msg);
 587 }
 588
 589 /** printf style printing to the ssl connection */
 590 int ssl_printf(RES* ssl, const char* format, ...)
 591 {
 592         va_list args;
 593         int ret;
 594         va_start(args, format);
 595         ret = ssl_print_vmsg(ssl, format, args);
 596         va_end(args);
 597         return ret;
 598 }
 599
 600 int
 601 ssl_read_line(RES* res, char* buf, size_t max)
 602 {
 603         int r;
 604         size_t len = 0;
 605         if(!res)
 606                 return 0;
 607         while(len < max) {
 608                 if(res->ssl) {
 609                         ERR_clear_error();
 610                         if((r=SSL_read(res->ssl, buf+len, 1)) <= 0) {
 611                                 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 612                                         buf[len] = 0;
 613                                         return 1;
 614                                 }
 615                                 log_crypto_err("could not SSL_read");
 616                                 return 0;
 617                         }
 618                 } else {
 619                         while(1) {
 620                                 ssize_t rr = recv(res->fd, buf+len, 1, 0);
 621                                 if(rr <= 0) {
 622                                         if(rr == 0) {
 623                                                 buf[len] = 0;
 624                                                 return 1;
 625                                         }
 626                                         if(errno == EINTR || errno == EAGAIN)
 627                                                 continue;
 628                                         log_err("could not recv: %s",
 629                                                 sock_strerror(errno));
 630                                         return 0;
 631                                 }
 632                                 break;
 633                         }
 634                 }
 635                 if(buf[len] == '\n') {
 636                         /* return string without \n */
 637                         buf[len] = 0;
 638                         return 1;
 639                 }
 640                 len++;
 641         }
 642         buf[max-1] = 0;
 643         log_err("control line too long (%d): %s", (int)max, buf);
 644         return 0;
 645 }
 646
 647 /** skip whitespace, return new pointer into string */
 648 static char*
 649 skipwhite(char* str)
 650 {
 651         /* EOS \0 is not a space */
 652         while( isspace((unsigned char)*str) )
 653                 str++;
 654         return str;
 655 }
 656
 657 /** send the OK to the control client */
 658 static void send_ok(RES* ssl)
 659 {
 660         (void)ssl_printf(ssl, "ok\n");
 661 }
 662
 663 /** do the stop command */
 664 static void
 665 do_stop(RES* ssl, struct worker* worker)
 666 {
 667         worker->need_to_exit = 1;
 668         comm_base_exit(worker->base);
 669         send_ok(ssl);
 670 }
 671
 672 /** do the reload command */
 673 static void
 674 do_reload(RES* ssl, struct worker* worker)
 675 {
 676         worker->need_to_exit = 0;
 677         comm_base_exit(worker->base);
 678         send_ok(ssl);
 679 }
 680
 681 /** do the verbosity command */
 682 static void
 683 do_verbosity(RES* ssl, char* str)
 684 {
 685         int val = atoi(str);
 686         if(val == 0 && strcmp(str, "0") != 0) {
 687                 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
 688                 return;
 689         }
 690         verbosity = val;
 691         send_ok(ssl);
 692 }
 693
 694 /** print stats from statinfo */
 695 static int
 696 print_stats(RES* ssl, const char* nm, struct ub_stats_info* s)
 697 {
 698         struct timeval sumwait, avg;
 699         if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm,
 700                 (unsigned long)s->svr.num_queries)) return 0;
 701         if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm,
 702                 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0;
 703         if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm,
 704                 (unsigned long)(s->svr.num_queries
 705                         - s->svr.num_queries_missed_cache))) return 0;
 706         if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm,
 707                 (unsigned long)s->svr.num_queries_missed_cache)) return 0;
 708         if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm,
 709                 (unsigned long)s->svr.num_queries_prefetch)) return 0;
 710         if(!ssl_printf(ssl, "%s.num.expired"SQ"%lu\n", nm,
 711                 (unsigned long)s->svr.ans_expired)) return 0;
 712         if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm,
 713                 (unsigned long)s->mesh_replies_sent)) return 0;
 714 #ifdef USE_DNSCRYPT
 715         if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm,
 716                 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0;
 717         if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm,
 718                 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0;
 719         if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm,
 720                 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0;
 721         if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm,
 722                 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0;
 723 #endif
 724         if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
 725                 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
 726                         (double)s->svr.sum_query_list_size/
 727                         (double)(s->svr.num_queries_missed_cache+
 728                         s->svr.num_queries_prefetch) : 0.0)) return 0;
 729         if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm,
 730                 (unsigned long)s->svr.max_query_list_size)) return 0;
 731         if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm,
 732                 (unsigned long)s->mesh_jostled)) return 0;
 733         if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm,
 734                 (unsigned long)s->mesh_dropped)) return 0;
 735         if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm,
 736                 (unsigned long)s->mesh_num_states)) return 0;
 737         if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm,
 738                 (unsigned long)s->mesh_num_reply_states)) return 0;
 739 #ifndef S_SPLINT_S
 740         sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
 741         sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
 742 #endif
 743         timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
 744         if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
 745                 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
 746         if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm,
 747                 s->mesh_time_median)) return 0;
 748         if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm,
 749                 (unsigned long)s->svr.tcp_accept_usage)) return 0;
 750         return 1;
 751 }
 752
 753 /** print stats for one thread */
 754 static int
 755 print_thread_stats(RES* ssl, int i, struct ub_stats_info* s)
 756 {
 757         char nm[32];
 758         snprintf(nm, sizeof(nm), "thread%d", i);
 759         nm[sizeof(nm)-1]=0;
 760         return print_stats(ssl, nm, s);
 761 }
 762
 763 /** print long number */
 764 static int
 765 print_longnum(RES* ssl, const char* desc, size_t x)
 766 {
 767         if(x > 1024*1024*1024) {
 768                 /* more than a Gb */
 769                 size_t front = x / (size_t)1000000;
 770                 size_t back = x % (size_t)1000000;
 771                 return ssl_printf(ssl, "%s%u%6.6u\n", desc,
 772                         (unsigned)front, (unsigned)back);
 773         } else {
 774                 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x);
 775         }
 776 }
 777
 778 /** print mem stats */
 779 static int
 780 print_mem(RES* ssl, struct worker* worker, struct daemon* daemon,
 781         struct ub_stats_info* s)
 782 {
 783         size_t msg, rrset, val, iter, respip;
 784 #ifdef CLIENT_SUBNET
 785         size_t subnet = 0;
 786 #endif /* CLIENT_SUBNET */
 787 #ifdef USE_IPSECMOD
 788         size_t ipsecmod = 0;
 789 #endif /* USE_IPSECMOD */
 790 #ifdef USE_DNSCRYPT
 791         size_t dnscrypt_shared_secret = 0;
 792         size_t dnscrypt_nonce = 0;
 793 #endif /* USE_DNSCRYPT */
 794 #ifdef WITH_DYNLIBMODULE
 795     size_t dynlib = 0;
 796 #endif /* WITH_DYNLIBMODULE */
 797         msg = slabhash_get_mem(daemon->env->msg_cache);
 798         rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
 799         val = mod_get_mem(&worker->env, "validator");
 800         iter = mod_get_mem(&worker->env, "iterator");
 801         respip = mod_get_mem(&worker->env, "respip");
 802 #ifdef CLIENT_SUBNET
 803         subnet = mod_get_mem(&worker->env, "subnet");
 804 #endif /* CLIENT_SUBNET */
 805 #ifdef USE_IPSECMOD
 806         ipsecmod = mod_get_mem(&worker->env, "ipsecmod");
 807 #endif /* USE_IPSECMOD */
 808 #ifdef USE_DNSCRYPT
 809         if(daemon->dnscenv) {
 810                 dnscrypt_shared_secret = slabhash_get_mem(
 811                         daemon->dnscenv->shared_secrets_cache);
 812                 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache);
 813         }
 814 #endif /* USE_DNSCRYPT */
 815 #ifdef WITH_DYNLIBMODULE
 816     dynlib = mod_get_mem(&worker->env, "dynlib");
 817 #endif /* WITH_DYNLIBMODULE */
 818
 819         if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
 820                 return 0;
 821         if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
 822                 return 0;
 823         if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
 824                 return 0;
 825         if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
 826                 return 0;
 827         if(!print_longnum(ssl, "mem.mod.respip"SQ, respip))
 828                 return 0;
 829 #ifdef CLIENT_SUBNET
 830         if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet))
 831                 return 0;
 832 #endif /* CLIENT_SUBNET */
 833 #ifdef USE_IPSECMOD
 834         if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod))
 835                 return 0;
 836 #endif /* USE_IPSECMOD */
 837 #ifdef USE_DNSCRYPT
 838         if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ,
 839                         dnscrypt_shared_secret))
 840                 return 0;
 841         if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ,
 842                         dnscrypt_nonce))
 843                 return 0;
 844 #endif /* USE_DNSCRYPT */
 845 #ifdef WITH_DYNLIBMODULE
 846         if(!print_longnum(ssl, "mem.mod.dynlibmod"SQ, dynlib))
 847                 return 0;
 848 #endif /* WITH_DYNLIBMODULE */
 849         if(!print_longnum(ssl, "mem.streamwait"SQ,
 850                 (size_t)s->svr.mem_stream_wait))
 851                 return 0;
 852         if(!print_longnum(ssl, "mem.http.query_buffer"SQ,
 853                 (size_t)s->svr.mem_http2_query_buffer))
 854                 return 0;
 855         if(!print_longnum(ssl, "mem.http.response_buffer"SQ,
 856                 (size_t)s->svr.mem_http2_response_buffer))
 857                 return 0;
 858         return 1;
 859 }
 860
 861 /** print uptime stats */
 862 static int
 863 print_uptime(RES* ssl, struct worker* worker, int reset)
 864 {
 865         struct timeval now = *worker->env.now_tv;
 866         struct timeval up, dt;
 867         timeval_subtract(&up, &now, &worker->daemon->time_boot);
 868         timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
 869         if(reset)
 870                 worker->daemon->time_last_stat = now;
 871         if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n",
 872                 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
 873         if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n",
 874                 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
 875         if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n",
 876                 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
 877         return 1;
 878 }
 879
 880 /** print extended histogram */
 881 static int
 882 print_hist(RES* ssl, struct ub_stats_info* s)
 883 {
 884         struct timehist* hist;
 885         size_t i;
 886         hist = timehist_setup();
 887         if(!hist) {
 888                 log_err("out of memory");
 889                 return 0;
 890         }
 891         timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
 892         for(i=0; i<hist->num; i++) {
 893                 if(!ssl_printf(ssl,
 894                         "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
 895                         (int)hist->buckets[i].lower.tv_sec,
 896                         (int)hist->buckets[i].lower.tv_usec,
 897                         (int)hist->buckets[i].upper.tv_sec,
 898                         (int)hist->buckets[i].upper.tv_usec,
 899                         (unsigned long)hist->buckets[i].count)) {
 900                         timehist_delete(hist);
 901                         return 0;
 902                 }
 903         }
 904         timehist_delete(hist);
 905         return 1;
 906 }
 907
 908 /** print extended stats */
 909 static int
 910 print_ext(RES* ssl, struct ub_stats_info* s)
 911 {
 912         int i;
 913         char nm[32];
 914         const sldns_rr_descriptor* desc;
 915         const sldns_lookup_table* lt;
 916         /* TYPE */
 917         for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
 918                 if(inhibit_zero && s->svr.qtype[i] == 0)
 919                         continue;
 920                 desc = sldns_rr_descript((uint16_t)i);
 921                 if(desc && desc->_name) {
 922                         snprintf(nm, sizeof(nm), "%s", desc->_name);
 923                 } else if (i == LDNS_RR_TYPE_IXFR) {
 924                         snprintf(nm, sizeof(nm), "IXFR");
 925                 } else if (i == LDNS_RR_TYPE_AXFR) {
 926                         snprintf(nm, sizeof(nm), "AXFR");
 927                 } else if (i == LDNS_RR_TYPE_MAILA) {
 928                         snprintf(nm, sizeof(nm), "MAILA");
 929                 } else if (i == LDNS_RR_TYPE_MAILB) {
 930                         snprintf(nm, sizeof(nm), "MAILB");
 931                 } else if (i == LDNS_RR_TYPE_ANY) {
 932                         snprintf(nm, sizeof(nm), "ANY");
 933                 } else {
 934                         snprintf(nm, sizeof(nm), "TYPE%d", i);
 935                 }
 936                 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n",
 937                         nm, (unsigned long)s->svr.qtype[i])) return 0;
 938         }
 939         if(!inhibit_zero || s->svr.qtype_big) {
 940                 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n",
 941                         (unsigned long)s->svr.qtype_big)) return 0;
 942         }
 943         /* CLASS */
 944         for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
 945                 if(inhibit_zero && s->svr.qclass[i] == 0)
 946                         continue;
 947                 lt = sldns_lookup_by_id(sldns_rr_classes, i);
 948                 if(lt && lt->name) {
 949                         snprintf(nm, sizeof(nm), "%s", lt->name);
 950                 } else {
 951                         snprintf(nm, sizeof(nm), "CLASS%d", i);
 952                 }
 953                 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n",
 954                         nm, (unsigned long)s->svr.qclass[i])) return 0;
 955         }
 956         if(!inhibit_zero || s->svr.qclass_big) {
 957                 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n",
 958                         (unsigned long)s->svr.qclass_big)) return 0;
 959         }
 960         /* OPCODE */
 961         for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
 962                 if(inhibit_zero && s->svr.qopcode[i] == 0)
 963                         continue;
 964                 lt = sldns_lookup_by_id(sldns_opcodes, i);
 965                 if(lt && lt->name) {
 966                         snprintf(nm, sizeof(nm), "%s", lt->name);
 967                 } else {
 968                         snprintf(nm, sizeof(nm), "OPCODE%d", i);
 969                 }
 970                 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n",
 971                         nm, (unsigned long)s->svr.qopcode[i])) return 0;
 972         }
 973         /* transport */
 974         if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n",
 975                 (unsigned long)s->svr.qtcp)) return 0;
 976         if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n",
 977                 (unsigned long)s->svr.qtcp_outgoing)) return 0;
 978         if(!ssl_printf(ssl, "num.query.tls"SQ"%lu\n",
 979                 (unsigned long)s->svr.qtls)) return 0;
 980         if(!ssl_printf(ssl, "num.query.tls.resume"SQ"%lu\n",
 981                 (unsigned long)s->svr.qtls_resume)) return 0;
 982         if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n",
 983                 (unsigned long)s->svr.qipv6)) return 0;
 984         if(!ssl_printf(ssl, "num.query.https"SQ"%lu\n",
 985                 (unsigned long)s->svr.qhttps)) return 0;
 986         /* flags */
 987         if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n",
 988                 (unsigned long)s->svr.qbit_QR)) return 0;
 989         if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n",
 990                 (unsigned long)s->svr.qbit_AA)) return 0;
 991         if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n",
 992                 (unsigned long)s->svr.qbit_TC)) return 0;
 993         if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n",
 994                 (unsigned long)s->svr.qbit_RD)) return 0;
 995         if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n",
 996                 (unsigned long)s->svr.qbit_RA)) return 0;
 997         if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n",
 998                 (unsigned long)s->svr.qbit_Z)) return 0;
 999         if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n",
1000                 (unsigned long)s->svr.qbit_AD)) return 0;
1001         if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n",
1002                 (unsigned long)s->svr.qbit_CD)) return 0;
1003         if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n",
1004                 (unsigned long)s->svr.qEDNS)) return 0;
1005         if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n",
1006                 (unsigned long)s->svr.qEDNS_DO)) return 0;
1007
1008         /* RCODE */
1009         for(i=0; i<UB_STATS_RCODE_NUM; i++) {
1010                 /* Always include RCODEs 0-5 */
1011                 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
1012                         continue;
1013                 lt = sldns_lookup_by_id(sldns_rcodes, i);
1014                 if(lt && lt->name) {
1015                         snprintf(nm, sizeof(nm), "%s", lt->name);
1016                 } else {
1017                         snprintf(nm, sizeof(nm), "RCODE%d", i);
1018                 }
1019                 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n",
1020                         nm, (unsigned long)s->svr.ans_rcode[i])) return 0;
1021         }
1022         if(!inhibit_zero || s->svr.ans_rcode_nodata) {
1023                 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n",
1024                         (unsigned long)s->svr.ans_rcode_nodata)) return 0;
1025         }
1026         /* iteration */
1027         if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n",
1028                 (unsigned long)s->svr.queries_ratelimited)) return 0;
1029         /* validation */
1030         if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n",
1031                 (unsigned long)s->svr.ans_secure)) return 0;
1032         if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n",
1033                 (unsigned long)s->svr.ans_bogus)) return 0;
1034         if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n",
1035                 (unsigned long)s->svr.rrset_bogus)) return 0;
1036         if(!ssl_printf(ssl, "num.query.aggressive.NOERROR"SQ"%lu\n",
1037                 (unsigned long)s->svr.num_neg_cache_noerror)) return 0;
1038         if(!ssl_printf(ssl, "num.query.aggressive.NXDOMAIN"SQ"%lu\n",
1039                 (unsigned long)s->svr.num_neg_cache_nxdomain)) return 0;
1040         /* threat detection */
1041         if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n",
1042                 (unsigned long)s->svr.unwanted_queries)) return 0;
1043         if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n",
1044                 (unsigned long)s->svr.unwanted_replies)) return 0;
1045         /* cache counts */
1046         if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n",
1047                 (unsigned)s->svr.msg_cache_count)) return 0;
1048         if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n",
1049                 (unsigned)s->svr.rrset_cache_count)) return 0;
1050         if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n",
1051                 (unsigned)s->svr.infra_cache_count)) return 0;
1052         if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n",
1053                 (unsigned)s->svr.key_cache_count)) return 0;
1054         /* applied RPZ actions */
1055         for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
1056                 if(i == RPZ_NO_OVERRIDE_ACTION)
1057                         continue;
1058                 if(inhibit_zero && s->svr.rpz_action[i] == 0)
1059                         continue;
1060                 if(!ssl_printf(ssl, "num.rpz.action.%s"SQ"%lu\n",
1061                         rpz_action_to_string(i),
1062                         (unsigned long)s->svr.rpz_action[i])) return 0;
1063         }
1064 #ifdef USE_DNSCRYPT
1065         if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n",
1066                 (unsigned)s->svr.shared_secret_cache_count)) return 0;
1067         if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n",
1068                 (unsigned)s->svr.nonce_cache_count)) return 0;
1069         if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n",
1070                 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0;
1071         if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n",
1072                 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0;
1073 #endif /* USE_DNSCRYPT */
1074         if(!ssl_printf(ssl, "num.query.authzone.up"SQ"%lu\n",
1075                 (unsigned long)s->svr.num_query_authzone_up)) return 0;
1076         if(!ssl_printf(ssl, "num.query.authzone.down"SQ"%lu\n",
1077                 (unsigned long)s->svr.num_query_authzone_down)) return 0;
1078 #ifdef CLIENT_SUBNET
1079         if(!ssl_printf(ssl, "num.query.subnet"SQ"%lu\n",
1080                 (unsigned long)s->svr.num_query_subnet)) return 0;
1081         if(!ssl_printf(ssl, "num.query.subnet_cache"SQ"%lu\n",
1082                 (unsigned long)s->svr.num_query_subnet_cache)) return 0;
1083 #endif /* CLIENT_SUBNET */
1084         return 1;
1085 }
1086
1087 /** do the stats command */
1088 static void
1089 do_stats(RES* ssl, struct worker* worker, int reset)
1090 {
1091         struct daemon* daemon = worker->daemon;
1092         struct ub_stats_info total;
1093         struct ub_stats_info s;
1094         int i;
1095         memset(&total, 0, sizeof(total));
1096         log_assert(daemon->num > 0);
1097         /* gather all thread statistics in one place */
1098         for(i=0; i<daemon->num; i++) {
1099                 server_stats_obtain(worker, daemon->workers[i], &s, reset);
1100                 if(!print_thread_stats(ssl, i, &s))
1101                         return;
1102                 if(i == 0)
1103                         total = s;
1104                 else    server_stats_add(&total, &s);
1105         }
1106         /* print the thread statistics */
1107         total.mesh_time_median /= (double)daemon->num;
1108         if(!print_stats(ssl, "total", &total))
1109                 return;
1110         if(!print_uptime(ssl, worker, reset))
1111                 return;
1112         if(daemon->cfg->stat_extended) {
1113                 if(!print_mem(ssl, worker, daemon, &total))
1114                         return;
1115                 if(!print_hist(ssl, &total))
1116                         return;
1117                 if(!print_ext(ssl, &total))
1118                         return;
1119         }
1120 }
1121
1122 /** parse commandline argument domain name */
1123 static int
1124 parse_arg_name(RES* ssl, char* str, uint8_t** res, size_t* len, int* labs)
1125 {
1126         uint8_t nm[LDNS_MAX_DOMAINLEN+1];
1127         size_t nmlen = sizeof(nm);
1128         int status;
1129         *res = NULL;
1130         *len = 0;
1131         *labs = 0;
1132         if(str[0] == '\0') {
1133                 ssl_printf(ssl, "error: this option requires a domain name\n");
1134                 return 0;
1135         }
1136         status = sldns_str2wire_dname_buf(str, nm, &nmlen);
1137         if(status != 0) {
1138                 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
1139                         LDNS_WIREPARSE_OFFSET(status),
1140                         sldns_get_errorstr_parse(status));
1141                 return 0;
1142         }
1143         *res = memdup(nm, nmlen);
1144         if(!*res) {
1145                 ssl_printf(ssl, "error out of memory\n");
1146                 return 0;
1147         }
1148         *labs = dname_count_size_labels(*res, len);
1149         return 1;
1150 }
1151
1152 /** find second argument, modifies string */
1153 static int
1154 find_arg2(RES* ssl, char* arg, char** arg2)
1155 {
1156         char* as = strchr(arg, ' ');
1157         char* at = strchr(arg, '\t');
1158         if(as && at) {
1159                 if(at < as)
1160                         as = at;
1161                 as[0]=0;
1162                 *arg2 = skipwhite(as+1);
1163         } else if(as) {
1164                 as[0]=0;
1165                 *arg2 = skipwhite(as+1);
1166         } else if(at) {
1167                 at[0]=0;
1168                 *arg2 = skipwhite(at+1);
1169         } else {
1170                 ssl_printf(ssl, "error could not find next argument "
1171                         "after %s\n", arg);
1172                 return 0;
1173         }
1174         return 1;
1175 }
1176
1177 /** Add a new zone */
1178 static int
1179 perform_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1180 {
1181         uint8_t* nm;
1182         int nmlabs;
1183         size_t nmlen;
1184         char* arg2;
1185         enum localzone_type t;
1186         struct local_zone* z;
1187         if(!find_arg2(ssl, arg, &arg2))
1188                 return 0;
1189         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1190                 return 0;
1191         if(!local_zone_str2type(arg2, &t)) {
1192                 ssl_printf(ssl, "error not a zone type. %s\n", arg2);
1193                 free(nm);
1194                 return 0;
1195         }
1196         lock_rw_wrlock(&zones->lock);
1197         if((z=local_zones_find(zones, nm, nmlen,
1198                 nmlabs, LDNS_RR_CLASS_IN))) {
1199                 /* already present in tree */
1200                 lock_rw_wrlock(&z->lock);
1201                 z->type = t; /* update type anyway */
1202                 lock_rw_unlock(&z->lock);
1203                 free(nm);
1204                 lock_rw_unlock(&zones->lock);
1205                 return 1;
1206         }
1207         if(!local_zones_add_zone(zones, nm, nmlen,
1208                 nmlabs, LDNS_RR_CLASS_IN, t)) {
1209                 lock_rw_unlock(&zones->lock);
1210                 ssl_printf(ssl, "error out of memory\n");
1211                 return 0;
1212         }
1213         lock_rw_unlock(&zones->lock);
1214         return 1;
1215 }
1216
1217 /** Do the local_zone command */
1218 static void
1219 do_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1220 {
1221         if(!perform_zone_add(ssl, zones, arg))
1222                 return;
1223         send_ok(ssl);
1224 }
1225
1226 /** Do the local_zones command */
1227 static void
1228 do_zones_add(RES* ssl, struct local_zones* zones)
1229 {
1230         char buf[2048];
1231         int num = 0;
1232         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1233                 if(buf[0] == 0x04 && buf[1] == 0)
1234                         break; /* end of transmission */
1235                 if(!perform_zone_add(ssl, zones, buf)) {
1236                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1237                                 return;
1238                 }
1239                 else
1240                         num++;
1241         }
1242         (void)ssl_printf(ssl, "added %d zones\n", num);
1243 }
1244
1245 /** Remove a zone */
1246 static int
1247 perform_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1248 {
1249         uint8_t* nm;
1250         int nmlabs;
1251         size_t nmlen;
1252         struct local_zone* z;
1253         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1254                 return 0;
1255         lock_rw_wrlock(&zones->lock);
1256         if((z=local_zones_find(zones, nm, nmlen,
1257                 nmlabs, LDNS_RR_CLASS_IN))) {
1258                 /* present in tree */
1259                 local_zones_del_zone(zones, z);
1260         }
1261         lock_rw_unlock(&zones->lock);
1262         free(nm);
1263         return 1;
1264 }
1265
1266 /** Do the local_zone_remove command */
1267 static void
1268 do_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1269 {
1270         if(!perform_zone_remove(ssl, zones, arg))
1271                 return;
1272         send_ok(ssl);
1273 }
1274
1275 /** Do the local_zones_remove command */
1276 static void
1277 do_zones_remove(RES* ssl, struct local_zones* zones)
1278 {
1279         char buf[2048];
1280         int num = 0;
1281         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1282                 if(buf[0] == 0x04 && buf[1] == 0)
1283                         break; /* end of transmission */
1284                 if(!perform_zone_remove(ssl, zones, buf)) {
1285                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1286                                 return;
1287                 }
1288                 else
1289                         num++;
1290         }
1291         (void)ssl_printf(ssl, "removed %d zones\n", num);
1292 }
1293
1294 /** Add new RR data */
1295 static int
1296 perform_data_add(RES* ssl, struct local_zones* zones, char* arg)
1297 {
1298         if(!local_zones_add_RR(zones, arg)) {
1299                 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
1300                 return 0;
1301         }
1302         return 1;
1303 }
1304
1305 /** Do the local_data command */
1306 static void
1307 do_data_add(RES* ssl, struct local_zones* zones, char* arg)
1308 {
1309         if(!perform_data_add(ssl, zones, arg))
1310                 return;
1311         send_ok(ssl);
1312 }
1313
1314 /** Do the local_datas command */
1315 static void
1316 do_datas_add(RES* ssl, struct local_zones* zones)
1317 {
1318         char buf[2048];
1319         int num = 0;
1320         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1321                 if(buf[0] == 0x04 && buf[1] == 0)
1322                         break; /* end of transmission */
1323                 if(!perform_data_add(ssl, zones, buf)) {
1324                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1325                                 return;
1326                 }
1327                 else
1328                         num++;
1329         }
1330         (void)ssl_printf(ssl, "added %d datas\n", num);
1331 }
1332
1333 /** Remove RR data */
1334 static int
1335 perform_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1336 {
1337         uint8_t* nm;
1338         int nmlabs;
1339         size_t nmlen;
1340         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1341                 return 0;
1342         local_zones_del_data(zones, nm,
1343                 nmlen, nmlabs, LDNS_RR_CLASS_IN);
1344         free(nm);
1345         return 1;
1346 }
1347
1348 /** Do the local_data_remove command */
1349 static void
1350 do_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1351 {
1352         if(!perform_data_remove(ssl, zones, arg))
1353                 return;
1354         send_ok(ssl);
1355 }
1356
1357 /** Do the local_datas_remove command */
1358 static void
1359 do_datas_remove(RES* ssl, struct local_zones* zones)
1360 {
1361         char buf[2048];
1362         int num = 0;
1363         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1364                 if(buf[0] == 0x04 && buf[1] == 0)
1365                         break; /* end of transmission */
1366                 if(!perform_data_remove(ssl, zones, buf)) {
1367                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1368                                 return;
1369                 }
1370                 else
1371                         num++;
1372         }
1373         (void)ssl_printf(ssl, "removed %d datas\n", num);
1374 }
1375
1376 /** Add a new zone to view */
1377 static void
1378 do_view_zone_add(RES* ssl, struct worker* worker, char* arg)
1379 {
1380         char* arg2;
1381         struct view* v;
1382         if(!find_arg2(ssl, arg, &arg2))
1383                 return;
1384         v = views_find_view(worker->daemon->views,
1385                 arg, 1 /* get write lock*/);
1386         if(!v) {
1387                 ssl_printf(ssl,"no view with name: %s\n", arg);
1388                 return;
1389         }
1390         if(!v->local_zones) {
1391                 if(!(v->local_zones = local_zones_create())){
1392                         lock_rw_unlock(&v->lock);
1393                         ssl_printf(ssl,"error out of memory\n");
1394                         return;
1395                 }
1396                 if(!v->isfirst) {
1397                         /* Global local-zone is not used for this view,
1398                          * therefore add defaults to this view-specic
1399                          * local-zone. */
1400                         struct config_file lz_cfg;
1401                         memset(&lz_cfg, 0, sizeof(lz_cfg));
1402                         local_zone_enter_defaults(v->local_zones, &lz_cfg);
1403                 }
1404         }
1405         do_zone_add(ssl, v->local_zones, arg2);
1406         lock_rw_unlock(&v->lock);
1407 }
1408
1409 /** Remove a zone from view */
1410 static void
1411 do_view_zone_remove(RES* ssl, struct worker* worker, char* arg)
1412 {
1413         char* arg2;
1414         struct view* v;
1415         if(!find_arg2(ssl, arg, &arg2))
1416                 return;
1417         v = views_find_view(worker->daemon->views,
1418                 arg, 1 /* get write lock*/);
1419         if(!v) {
1420                 ssl_printf(ssl,"no view with name: %s\n", arg);
1421                 return;
1422         }
1423         if(!v->local_zones) {
1424                 lock_rw_unlock(&v->lock);
1425                 send_ok(ssl);
1426                 return;
1427         }
1428         do_zone_remove(ssl, v->local_zones, arg2);
1429         lock_rw_unlock(&v->lock);
1430 }
1431
1432 /** Add new RR data to view */
1433 static void
1434 do_view_data_add(RES* ssl, struct worker* worker, char* arg)
1435 {
1436         char* arg2;
1437         struct view* v;
1438         if(!find_arg2(ssl, arg, &arg2))
1439                 return;
1440         v = views_find_view(worker->daemon->views,
1441                 arg, 1 /* get write lock*/);
1442         if(!v) {
1443                 ssl_printf(ssl,"no view with name: %s\n", arg);
1444                 return;
1445         }
1446         if(!v->local_zones) {
1447                 if(!(v->local_zones = local_zones_create())){
1448                         lock_rw_unlock(&v->lock);
1449                         ssl_printf(ssl,"error out of memory\n");
1450                         return;
1451                 }
1452         }
1453         do_data_add(ssl, v->local_zones, arg2);
1454         lock_rw_unlock(&v->lock);
1455 }
1456
1457 /** Add new RR data from stdin to view */
1458 static void
1459 do_view_datas_add(RES* ssl, struct worker* worker, char* arg)
1460 {
1461         struct view* v;
1462         v = views_find_view(worker->daemon->views,
1463                 arg, 1 /* get write lock*/);
1464         if(!v) {
1465                 ssl_printf(ssl,"no view with name: %s\n", arg);
1466                 return;
1467         }
1468         if(!v->local_zones) {
1469                 if(!(v->local_zones = local_zones_create())){
1470                         lock_rw_unlock(&v->lock);
1471                         ssl_printf(ssl,"error out of memory\n");
1472                         return;
1473                 }
1474         }
1475         do_datas_add(ssl, v->local_zones);
1476         lock_rw_unlock(&v->lock);
1477 }
1478
1479 /** Remove RR data from view */
1480 static void
1481 do_view_data_remove(RES* ssl, struct worker* worker, char* arg)
1482 {
1483         char* arg2;
1484         struct view* v;
1485         if(!find_arg2(ssl, arg, &arg2))
1486                 return;
1487         v = views_find_view(worker->daemon->views,
1488                 arg, 1 /* get write lock*/);
1489         if(!v) {
1490                 ssl_printf(ssl,"no view with name: %s\n", arg);
1491                 return;
1492         }
1493         if(!v->local_zones) {
1494                 lock_rw_unlock(&v->lock);
1495                 send_ok(ssl);
1496                 return;
1497         }
1498         do_data_remove(ssl, v->local_zones, arg2);
1499         lock_rw_unlock(&v->lock);
1500 }
1501
1502 /** Remove RR data from stdin from view */
1503 static void
1504 do_view_datas_remove(RES* ssl, struct worker* worker, char* arg)
1505 {
1506         struct view* v;
1507         v = views_find_view(worker->daemon->views,
1508                 arg, 1 /* get write lock*/);
1509         if(!v) {
1510                 ssl_printf(ssl,"no view with name: %s\n", arg);
1511                 return;
1512         }
1513         if(!v->local_zones){
1514                 lock_rw_unlock(&v->lock);
1515                 ssl_printf(ssl, "removed 0 datas\n");
1516                 return;
1517         }
1518
1519         do_datas_remove(ssl, v->local_zones);
1520         lock_rw_unlock(&v->lock);
1521 }
1522
1523 /** cache lookup of nameservers */
1524 static void
1525 do_lookup(RES* ssl, struct worker* worker, char* arg)
1526 {
1527         uint8_t* nm;
1528         int nmlabs;
1529         size_t nmlen;
1530         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1531                 return;
1532         (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
1533         free(nm);
1534 }
1535
1536 /** flush something from rrset and msg caches */
1537 static void
1538 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
1539         uint16_t t, uint16_t c)
1540 {
1541         hashvalue_type h;
1542         struct query_info k;
1543         rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
1544         if(t == LDNS_RR_TYPE_SOA)
1545                 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
1546                         PACKED_RRSET_SOA_NEG);
1547         k.qname = nm;
1548         k.qname_len = nmlen;
1549         k.qtype = t;
1550         k.qclass = c;
1551         k.local_alias = NULL;
1552         h = query_info_hash(&k, 0);
1553         slabhash_remove(worker->env.msg_cache, h, &k);
1554         if(t == LDNS_RR_TYPE_AAAA) {
1555                 /* for AAAA also flush dns64 bit_cd packet */
1556                 h = query_info_hash(&k, BIT_CD);
1557                 slabhash_remove(worker->env.msg_cache, h, &k);
1558         }
1559 }
1560
1561 /** flush a type */
1562 static void
1563 do_flush_type(RES* ssl, struct worker* worker, char* arg)
1564 {
1565         uint8_t* nm;
1566         int nmlabs;
1567         size_t nmlen;
1568         char* arg2;
1569         uint16_t t;
1570         if(!find_arg2(ssl, arg, &arg2))
1571                 return;
1572         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1573                 return;
1574         t = sldns_get_rr_type_by_name(arg2);
1575         do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
1576
1577         free(nm);
1578         send_ok(ssl);
1579 }
1580
1581 /** flush statistics */
1582 static void
1583 do_flush_stats(RES* ssl, struct worker* worker)
1584 {
1585         worker_stats_clear(worker);
1586         send_ok(ssl);
1587 }
1588
1589 /**
1590  * Local info for deletion functions
1591  */
1592 struct del_info {
1593         /** worker */
1594         struct worker* worker;
1595         /** name to delete */
1596         uint8_t* name;
1597         /** length */
1598         size_t len;
1599         /** labels */
1600         int labs;
1601         /** time to invalidate to */
1602         time_t expired;
1603         /** number of rrsets removed */
1604         size_t num_rrsets;
1605         /** number of msgs removed */
1606         size_t num_msgs;
1607         /** number of key entries removed */
1608         size_t num_keys;
1609         /** length of addr */
1610         socklen_t addrlen;
1611         /** socket address for host deletion */
1612         struct sockaddr_storage addr;
1613 };
1614
1615 /** callback to delete hosts in infra cache */
1616 static void
1617 infra_del_host(struct lruhash_entry* e, void* arg)
1618 {
1619         /* entry is locked */
1620         struct del_info* inf = (struct del_info*)arg;
1621         struct infra_key* k = (struct infra_key*)e->key;
1622         if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
1623                 struct infra_data* d = (struct infra_data*)e->data;
1624                 d->probedelay = 0;
1625                 d->timeout_A = 0;
1626                 d->timeout_AAAA = 0;
1627                 d->timeout_other = 0;
1628                 rtt_init(&d->rtt);
1629                 if(d->ttl > inf->expired) {
1630                         d->ttl = inf->expired;
1631                         inf->num_keys++;
1632                 }
1633         }
1634 }
1635
1636 /** flush infra cache */
1637 static void
1638 do_flush_infra(RES* ssl, struct worker* worker, char* arg)
1639 {
1640         struct sockaddr_storage addr;
1641         socklen_t len;
1642         struct del_info inf;
1643         if(strcmp(arg, "all") == 0) {
1644                 slabhash_clear(worker->env.infra_cache->hosts);
1645                 send_ok(ssl);
1646                 return;
1647         }
1648         if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
1649                 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
1650                 return;
1651         }
1652         /* delete all entries from cache */
1653         /* what we do is to set them all expired */
1654         inf.worker = worker;
1655         inf.name = 0;
1656         inf.len = 0;
1657         inf.labs = 0;
1658         inf.expired = *worker->env.now;
1659         inf.expired -= 3; /* handle 3 seconds skew between threads */
1660         inf.num_rrsets = 0;
1661         inf.num_msgs = 0;
1662         inf.num_keys = 0;
1663         inf.addrlen = len;
1664         memmove(&inf.addr, &addr, len);
1665         slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
1666                 &inf);
1667         send_ok(ssl);
1668 }
1669
1670 /** flush requestlist */
1671 static void
1672 do_flush_requestlist(RES* ssl, struct worker* worker)
1673 {
1674         mesh_delete_all(worker->env.mesh);
1675         send_ok(ssl);
1676 }
1677
1678 /** callback to delete rrsets in a zone */
1679 static void
1680 zone_del_rrset(struct lruhash_entry* e, void* arg)
1681 {
1682         /* entry is locked */
1683         struct del_info* inf = (struct del_info*)arg;
1684         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1685         if(dname_subdomain_c(k->rk.dname, inf->name)) {
1686                 struct packed_rrset_data* d =
1687                         (struct packed_rrset_data*)e->data;
1688                 if(d->ttl > inf->expired) {
1689                         d->ttl = inf->expired;
1690                         inf->num_rrsets++;
1691                 }
1692         }
1693 }
1694
1695 /** callback to delete messages in a zone */
1696 static void
1697 zone_del_msg(struct lruhash_entry* e, void* arg)
1698 {
1699         /* entry is locked */
1700         struct del_info* inf = (struct del_info*)arg;
1701         struct msgreply_entry* k = (struct msgreply_entry*)e->key;
1702         if(dname_subdomain_c(k->key.qname, inf->name)) {
1703                 struct reply_info* d = (struct reply_info*)e->data;
1704                 if(d->ttl > inf->expired) {
1705                         d->ttl = inf->expired;
1706                         d->prefetch_ttl = inf->expired;
1707                         d->serve_expired_ttl = inf->expired;
1708                         inf->num_msgs++;
1709                 }
1710         }
1711 }
1712
1713 /** callback to delete keys in zone */
1714 static void
1715 zone_del_kcache(struct lruhash_entry* e, void* arg)
1716 {
1717         /* entry is locked */
1718         struct del_info* inf = (struct del_info*)arg;
1719         struct key_entry_key* k = (struct key_entry_key*)e->key;
1720         if(dname_subdomain_c(k->name, inf->name)) {
1721                 struct key_entry_data* d = (struct key_entry_data*)e->data;
1722                 if(d->ttl > inf->expired) {
1723                         d->ttl = inf->expired;
1724                         inf->num_keys++;
1725                 }
1726         }
1727 }
1728
1729 /** remove all rrsets and keys from zone from cache */
1730 static void
1731 do_flush_zone(RES* ssl, struct worker* worker, char* arg)
1732 {
1733         uint8_t* nm;
1734         int nmlabs;
1735         size_t nmlen;
1736         struct del_info inf;
1737         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1738                 return;
1739         /* delete all RRs and key entries from zone */
1740         /* what we do is to set them all expired */
1741         inf.worker = worker;
1742         inf.name = nm;
1743         inf.len = nmlen;
1744         inf.labs = nmlabs;
1745         inf.expired = *worker->env.now;
1746         inf.expired -= 3; /* handle 3 seconds skew between threads */
1747         inf.num_rrsets = 0;
1748         inf.num_msgs = 0;
1749         inf.num_keys = 0;
1750         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1751                 &zone_del_rrset, &inf);
1752
1753         slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
1754
1755         /* and validator cache */
1756         if(worker->env.key_cache) {
1757                 slabhash_traverse(worker->env.key_cache->slab, 1,
1758                         &zone_del_kcache, &inf);
1759         }
1760
1761         free(nm);
1762
1763         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1764                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1765                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1766 }
1767
1768 /** callback to delete bogus rrsets */
1769 static void
1770 bogus_del_rrset(struct lruhash_entry* e, void* arg)
1771 {
1772         /* entry is locked */
1773         struct del_info* inf = (struct del_info*)arg;
1774         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1775         if(d->security == sec_status_bogus) {
1776                 d->ttl = inf->expired;
1777                 inf->num_rrsets++;
1778         }
1779 }
1780
1781 /** callback to delete bogus messages */
1782 static void
1783 bogus_del_msg(struct lruhash_entry* e, void* arg)
1784 {
1785         /* entry is locked */
1786         struct del_info* inf = (struct del_info*)arg;
1787         struct reply_info* d = (struct reply_info*)e->data;
1788         if(d->security == sec_status_bogus) {
1789                 d->ttl = inf->expired;
1790                 inf->num_msgs++;
1791         }
1792 }
1793
1794 /** callback to delete bogus keys */
1795 static void
1796 bogus_del_kcache(struct lruhash_entry* e, void* arg)
1797 {
1798         /* entry is locked */
1799         struct del_info* inf = (struct del_info*)arg;
1800         struct key_entry_data* d = (struct key_entry_data*)e->data;
1801         if(d->isbad) {
1802                 d->ttl = inf->expired;
1803                 inf->num_keys++;
1804         }
1805 }
1806
1807 /** remove all bogus rrsets, msgs and keys from cache */
1808 static void
1809 do_flush_bogus(RES* ssl, struct worker* worker)
1810 {
1811         struct del_info inf;
1812         /* what we do is to set them all expired */
1813         inf.worker = worker;
1814         inf.expired = *worker->env.now;
1815         inf.expired -= 3; /* handle 3 seconds skew between threads */
1816         inf.num_rrsets = 0;
1817         inf.num_msgs = 0;
1818         inf.num_keys = 0;
1819         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1820                 &bogus_del_rrset, &inf);
1821
1822         slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
1823
1824         /* and validator cache */
1825         if(worker->env.key_cache) {
1826                 slabhash_traverse(worker->env.key_cache->slab, 1,
1827                         &bogus_del_kcache, &inf);
1828         }
1829
1830         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1831                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1832                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1833 }
1834
1835 /** callback to delete negative and servfail rrsets */
1836 static void
1837 negative_del_rrset(struct lruhash_entry* e, void* arg)
1838 {
1839         /* entry is locked */
1840         struct del_info* inf = (struct del_info*)arg;
1841         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1842         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1843         /* delete the parentside negative cache rrsets,
1844          * these are nameserver rrsets that failed lookup, rdata empty */
1845         if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 &&
1846                 d->rrsig_count == 0 && d->rr_len[0] == 0) {
1847                 d->ttl = inf->expired;
1848                 inf->num_rrsets++;
1849         }
1850 }
1851
1852 /** callback to delete negative and servfail messages */
1853 static void
1854 negative_del_msg(struct lruhash_entry* e, void* arg)
1855 {
1856         /* entry is locked */
1857         struct del_info* inf = (struct del_info*)arg;
1858         struct reply_info* d = (struct reply_info*)e->data;
1859         /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error
1860          * or NOERROR rcode with ANCOUNT==0: a NODATA answer */
1861         if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) {
1862                 d->ttl = inf->expired;
1863                 inf->num_msgs++;
1864         }
1865 }
1866
1867 /** callback to delete negative key entries */
1868 static void
1869 negative_del_kcache(struct lruhash_entry* e, void* arg)
1870 {
1871         /* entry is locked */
1872         struct del_info* inf = (struct del_info*)arg;
1873         struct key_entry_data* d = (struct key_entry_data*)e->data;
1874         /* could be bad because of lookup failure on the DS, DNSKEY, which
1875          * was nxdomain or servfail, and thus a result of negative lookups */
1876         if(d->isbad) {
1877                 d->ttl = inf->expired;
1878                 inf->num_keys++;
1879         }
1880 }
1881
1882 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */
1883 static void
1884 do_flush_negative(RES* ssl, struct worker* worker)
1885 {
1886         struct del_info inf;
1887         /* what we do is to set them all expired */
1888         inf.worker = worker;
1889         inf.expired = *worker->env.now;
1890         inf.expired -= 3; /* handle 3 seconds skew between threads */
1891         inf.num_rrsets = 0;
1892         inf.num_msgs = 0;
1893         inf.num_keys = 0;
1894         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1895                 &negative_del_rrset, &inf);
1896
1897         slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf);
1898
1899         /* and validator cache */
1900         if(worker->env.key_cache) {
1901                 slabhash_traverse(worker->env.key_cache->slab, 1,
1902                         &negative_del_kcache, &inf);
1903         }
1904
1905         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1906                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1907                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1908 }
1909
1910 /** remove name rrset from cache */
1911 static void
1912 do_flush_name(RES* ssl, struct worker* w, char* arg)
1913 {
1914         uint8_t* nm;
1915         int nmlabs;
1916         size_t nmlen;
1917         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1918                 return;
1919         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
1920         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
1921         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
1922         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
1923         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
1924         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
1925         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
1926         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
1927         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
1928         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
1929
1930         free(nm);
1931         send_ok(ssl);
1932 }
1933
1934 /** printout a delegation point info */
1935 static int
1936 ssl_print_name_dp(RES* ssl, const char* str, uint8_t* nm, uint16_t dclass,
1937         struct delegpt* dp)
1938 {
1939         char buf[257];
1940         struct delegpt_ns* ns;
1941         struct delegpt_addr* a;
1942         int f = 0;
1943         if(str) { /* print header for forward, stub */
1944                 char* c = sldns_wire2str_class(dclass);
1945                 dname_str(nm, buf);
1946                 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) {
1947                         free(c);
1948                         return 0;
1949                 }
1950                 free(c);
1951         }
1952         for(ns = dp->nslist; ns; ns = ns->next) {
1953                 dname_str(ns->name, buf);
1954                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1955                         return 0;
1956                 f = 1;
1957         }
1958         for(a = dp->target_list; a; a = a->next_target) {
1959                 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
1960                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1961                         return 0;
1962                 f = 1;
1963         }
1964         return ssl_printf(ssl, "\n");
1965 }
1966
1967
1968 /** print root forwards */
1969 static int
1970 print_root_fwds(RES* ssl, struct iter_forwards* fwds, uint8_t* root)
1971 {
1972         struct delegpt* dp;
1973         dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
1974         if(!dp)
1975                 return ssl_printf(ssl, "off (using root hints)\n");
1976         /* if dp is returned it must be the root */
1977         log_assert(query_dname_compare(dp->name, root)==0);
1978         return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
1979 }
1980
1981 /** parse args into delegpt */
1982 static struct delegpt*
1983 parse_delegpt(RES* ssl, char* args, uint8_t* nm, int allow_names)
1984 {
1985         /* parse args and add in */
1986         char* p = args;
1987         char* todo;
1988         struct delegpt* dp = delegpt_create_mlc(nm);
1989         struct sockaddr_storage addr;
1990         socklen_t addrlen;
1991         char* auth_name;
1992         if(!dp) {
1993                 (void)ssl_printf(ssl, "error out of memory\n");
1994                 return NULL;
1995         }
1996         while(p) {
1997                 todo = p;
1998                 p = strchr(p, ' '); /* find next spot, if any */
1999                 if(p) {
2000                         *p++ = 0;       /* end this spot */
2001                         p = skipwhite(p); /* position at next spot */
2002                 }
2003                 /* parse address */
2004                 if(!authextstrtoaddr(todo, &addr, &addrlen, &auth_name)) {
2005                         if(allow_names) {
2006                                 uint8_t* n = NULL;
2007                                 size_t ln;
2008                                 int lb;
2009                                 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) {
2010                                         (void)ssl_printf(ssl, "error cannot "
2011                                                 "parse IP address or name "
2012                                                 "'%s'\n", todo);
2013                                         delegpt_free_mlc(dp);
2014                                         return NULL;
2015                                 }
2016                                 if(!delegpt_add_ns_mlc(dp, n, 0)) {
2017                                         (void)ssl_printf(ssl, "error out of memory\n");
2018                                         free(n);
2019                                         delegpt_free_mlc(dp);
2020                                         return NULL;
2021                                 }
2022                                 free(n);
2023
2024                         } else {
2025                                 (void)ssl_printf(ssl, "error cannot parse"
2026                                         " IP address '%s'\n", todo);
2027                                 delegpt_free_mlc(dp);
2028                                 return NULL;
2029                         }
2030                 } else {
2031 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST)
2032                         if(auth_name)
2033                           log_err("no name verification functionality in "
2034                                 "ssl library, ignored name for %s", todo);
2035 #endif
2036                         /* add address */
2037                         if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0,
2038                                 auth_name)) {
2039                                 (void)ssl_printf(ssl, "error out of memory\n");
2040                                 delegpt_free_mlc(dp);
2041                                 return NULL;
2042                         }
2043                 }
2044         }
2045         dp->has_parent_side_NS = 1;
2046         return dp;
2047 }
2048
2049 /** do the status command */
2050 static void
2051 do_forward(RES* ssl, struct worker* worker, char* args)
2052 {
2053         struct iter_forwards* fwd = worker->env.fwds;
2054         uint8_t* root = (uint8_t*)"\000";
2055         if(!fwd) {
2056                 (void)ssl_printf(ssl, "error: structure not allocated\n");
2057                 return;
2058         }
2059         if(args == NULL || args[0] == 0) {
2060                 (void)print_root_fwds(ssl, fwd, root);
2061                 return;
2062         }
2063         /* set root forwards for this thread. since we are in remote control
2064          * the actual mesh is not running, so we can freely edit it. */
2065         /* delete all the existing queries first */
2066         mesh_delete_all(worker->env.mesh);
2067         if(strcmp(args, "off") == 0) {
2068                 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
2069         } else {
2070                 struct delegpt* dp;
2071                 if(!(dp = parse_delegpt(ssl, args, root, 0)))
2072                         return;
2073                 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2074                         (void)ssl_printf(ssl, "error out of memory\n");
2075                         return;
2076                 }
2077         }
2078         send_ok(ssl);
2079 }
2080
2081 static int
2082 parse_fs_args(RES* ssl, char* args, uint8_t** nm, struct delegpt** dp,
2083         int* insecure, int* prime)
2084 {
2085         char* zonename;
2086         char* rest;
2087         size_t nmlen;
2088         int nmlabs;
2089         /* parse all -x args */
2090         while(args[0] == '+') {
2091                 if(!find_arg2(ssl, args, &rest))
2092                         return 0;
2093                 while(*(++args) != 0) {
2094                         if(*args == 'i' && insecure)
2095                                 *insecure = 1;
2096                         else if(*args == 'p' && prime)
2097                                 *prime = 1;
2098                         else {
2099                                 (void)ssl_printf(ssl, "error: unknown option %s\n", args);
2100                                 return 0;
2101                         }
2102                 }
2103                 args = rest;
2104         }
2105         /* parse name */
2106         if(dp) {
2107                 if(!find_arg2(ssl, args, &rest))
2108                         return 0;
2109                 zonename = args;
2110                 args = rest;
2111         } else  zonename = args;
2112         if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
2113                 return 0;
2114
2115         /* parse dp */
2116         if(dp) {
2117                 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) {
2118                         free(*nm);
2119                         return 0;
2120                 }
2121         }
2122         return 1;
2123 }
2124
2125 /** do the forward_add command */
2126 static void
2127 do_forward_add(RES* ssl, struct worker* worker, char* args)
2128 {
2129         struct iter_forwards* fwd = worker->env.fwds;
2130         int insecure = 0;
2131         uint8_t* nm = NULL;
2132         struct delegpt* dp = NULL;
2133         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
2134                 return;
2135         if(insecure && worker->env.anchors) {
2136                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2137                         nm)) {
2138                         (void)ssl_printf(ssl, "error out of memory\n");
2139                         delegpt_free_mlc(dp);
2140                         free(nm);
2141                         return;
2142                 }
2143         }
2144         if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2145                 (void)ssl_printf(ssl, "error out of memory\n");
2146                 free(nm);
2147                 return;
2148         }
2149         free(nm);
2150         send_ok(ssl);
2151 }
2152
2153 /** do the forward_remove command */
2154 static void
2155 do_forward_remove(RES* ssl, struct worker* worker, char* args)
2156 {
2157         struct iter_forwards* fwd = worker->env.fwds;
2158         int insecure = 0;
2159         uint8_t* nm = NULL;
2160         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2161                 return;
2162         if(insecure && worker->env.anchors)
2163                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2164                         nm);
2165         forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
2166         free(nm);
2167         send_ok(ssl);
2168 }
2169
2170 /** do the stub_add command */
2171 static void
2172 do_stub_add(RES* ssl, struct worker* worker, char* args)
2173 {
2174         struct iter_forwards* fwd = worker->env.fwds;
2175         int insecure = 0, prime = 0;
2176         uint8_t* nm = NULL;
2177         struct delegpt* dp = NULL;
2178         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
2179                 return;
2180         if(insecure && worker->env.anchors) {
2181                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2182                         nm)) {
2183                         (void)ssl_printf(ssl, "error out of memory\n");
2184                         delegpt_free_mlc(dp);
2185                         free(nm);
2186                         return;
2187                 }
2188         }
2189         if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
2190                 if(insecure && worker->env.anchors)
2191                         anchors_delete_insecure(worker->env.anchors,
2192                                 LDNS_RR_CLASS_IN, nm);
2193                 (void)ssl_printf(ssl, "error out of memory\n");
2194                 delegpt_free_mlc(dp);
2195                 free(nm);
2196                 return;
2197         }
2198         if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
2199                 (void)ssl_printf(ssl, "error out of memory\n");
2200                 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2201                 if(insecure && worker->env.anchors)
2202                         anchors_delete_insecure(worker->env.anchors,
2203                                 LDNS_RR_CLASS_IN, nm);
2204                 free(nm);
2205                 return;
2206         }
2207         free(nm);
2208         send_ok(ssl);
2209 }
2210
2211 /** do the stub_remove command */
2212 static void
2213 do_stub_remove(RES* ssl, struct worker* worker, char* args)
2214 {
2215         struct iter_forwards* fwd = worker->env.fwds;
2216         int insecure = 0;
2217         uint8_t* nm = NULL;
2218         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2219                 return;
2220         if(insecure && worker->env.anchors)
2221                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2222                         nm);
2223         forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2224         hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
2225         free(nm);
2226         send_ok(ssl);
2227 }
2228
2229 /** do the insecure_add command */
2230 static void
2231 do_insecure_add(RES* ssl, struct worker* worker, char* arg)
2232 {
2233         size_t nmlen;
2234         int nmlabs;
2235         uint8_t* nm = NULL;
2236         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2237                 return;
2238         if(worker->env.anchors) {
2239                 if(!anchors_add_insecure(worker->env.anchors,
2240                         LDNS_RR_CLASS_IN, nm)) {
2241                         (void)ssl_printf(ssl, "error out of memory\n");
2242                         free(nm);
2243                         return;
2244                 }
2245         }
2246         free(nm);
2247         send_ok(ssl);
2248 }
2249
2250 /** do the insecure_remove command */
2251 static void
2252 do_insecure_remove(RES* ssl, struct worker* worker, char* arg)
2253 {
2254         size_t nmlen;
2255         int nmlabs;
2256         uint8_t* nm = NULL;
2257         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2258                 return;
2259         if(worker->env.anchors)
2260                 anchors_delete_insecure(worker->env.anchors,
2261                         LDNS_RR_CLASS_IN, nm);
2262         free(nm);
2263         send_ok(ssl);
2264 }
2265
2266 static void
2267 do_insecure_list(RES* ssl, struct worker* worker)
2268 {
2269         char buf[257];
2270         struct trust_anchor* a;
2271         if(worker->env.anchors) {
2272                 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) {
2273                         if(a->numDS == 0 && a->numDNSKEY == 0) {
2274                                 dname_str(a->name, buf);
2275                                 ssl_printf(ssl, "%s\n", buf);
2276                         }
2277                 }
2278         }
2279 }
2280
2281 /** do the status command */
2282 static void
2283 do_status(RES* ssl, struct worker* worker)
2284 {
2285         int i;
2286         time_t uptime;
2287         if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
2288                 return;
2289         if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
2290                 return;
2291         if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
2292                 return;
2293         if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
2294                 return;
2295         for(i=0; i<worker->daemon->mods.num; i++) {
2296                 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
2297                         return;
2298         }
2299         if(!ssl_printf(ssl, " ]\n"))
2300                 return;
2301         uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
2302         if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
2303                 return;
2304         if(!ssl_printf(ssl, "options:%s%s%s%s\n" ,
2305                 (worker->daemon->reuseport?" reuseport":""),
2306                 (worker->daemon->rc->accept_list?" control":""),
2307                 (worker->daemon->rc->accept_list && worker->daemon->rc->use_cert?"(ssl)":""),
2308                 (worker->daemon->rc->accept_list && worker->daemon->cfg->control_ifs.first && worker->daemon->cfg->control_ifs.first->str && worker->daemon->cfg->control_ifs.first->str[0] == '/'?"(namedpipe)":"")
2309                 ))
2310                 return;
2311         if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
2312                 (int)getpid()))
2313                 return;
2314 }
2315
2316 /** get age for the mesh state */
2317 static void
2318 get_mesh_age(struct mesh_state* m, char* buf, size_t len,
2319         struct module_env* env)
2320 {
2321         if(m->reply_list) {
2322                 struct timeval d;
2323                 struct mesh_reply* r = m->reply_list;
2324                 /* last reply is the oldest */
2325                 while(r && r->next)
2326                         r = r->next;
2327                 timeval_subtract(&d, env->now_tv, &r->start_time);
2328                 snprintf(buf, len, ARG_LL "d.%6.6d",
2329                         (long long)d.tv_sec, (int)d.tv_usec);
2330         } else {
2331                 snprintf(buf, len, "-");
2332         }
2333 }
2334
2335 /** get status of a mesh state */
2336 static void
2337 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m,
2338         char* buf, size_t len)
2339 {
2340         enum module_ext_state s = m->s.ext_state[m->s.curmod];
2341         const char *modname = mesh->mods.mod[m->s.curmod]->name;
2342         size_t l;
2343         if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
2344                 m->s.minfo[m->s.curmod]) {
2345                 /* break into iterator to find out who its waiting for */
2346                 struct iter_qstate* qstate = (struct iter_qstate*)
2347                         m->s.minfo[m->s.curmod];
2348                 struct outbound_list* ol = &qstate->outlist;
2349                 struct outbound_entry* e;
2350                 snprintf(buf, len, "%s wait for", modname);
2351                 l = strlen(buf);
2352                 buf += l; len -= l;
2353                 if(ol->first == NULL)
2354                         snprintf(buf, len, " (empty_list)");
2355                 for(e = ol->first; e; e = e->next) {
2356                         snprintf(buf, len, " ");
2357                         l = strlen(buf);
2358                         buf += l; len -= l;
2359                         addr_to_str(&e->qsent->addr, e->qsent->addrlen,
2360                                 buf, len);
2361                         l = strlen(buf);
2362                         buf += l; len -= l;
2363                 }
2364         } else if(s == module_wait_subquery) {
2365                 /* look in subs from mesh state to see what */
2366                 char nm[257];
2367                 struct mesh_state_ref* sub;
2368                 snprintf(buf, len, "%s wants", modname);
2369                 l = strlen(buf);
2370                 buf += l; len -= l;
2371                 if(m->sub_set.count == 0)
2372                         snprintf(buf, len, " (empty_list)");
2373                 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
2374                         char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
2375                         char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
2376                         dname_str(sub->s->s.qinfo.qname, nm);
2377                         snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
2378                                 (c?c:"CLASS??"), nm);
2379                         l = strlen(buf);
2380                         buf += l; len -= l;
2381                         free(t);
2382                         free(c);
2383                 }
2384         } else {
2385                 snprintf(buf, len, "%s is %s", modname, strextstate(s));
2386         }
2387 }
2388
2389 /** do the dump_requestlist command */
2390 static void
2391 do_dump_requestlist(RES* ssl, struct worker* worker)
2392 {
2393         struct mesh_area* mesh;
2394         struct mesh_state* m;
2395         int num = 0;
2396         char buf[257];
2397         char timebuf[32];
2398         char statbuf[10240];
2399         if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
2400                 return;
2401         if(!ssl_printf(ssl, "#   type cl name    seconds    module status\n"))
2402                 return;
2403         /* show worker mesh contents */
2404         mesh = worker->env.mesh;
2405         if(!mesh) return;
2406         RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
2407                 char* t = sldns_wire2str_type(m->s.qinfo.qtype);
2408                 char* c = sldns_wire2str_class(m->s.qinfo.qclass);
2409                 dname_str(m->s.qinfo.qname, buf);
2410                 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
2411                 get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
2412                 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n",
2413                         num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
2414                         statbuf)) {
2415                         free(t);
2416                         free(c);
2417                         return;
2418                 }
2419                 num++;
2420                 free(t);
2421                 free(c);
2422         }
2423 }
2424
2425 /** structure for argument data for dump infra host */
2426 struct infra_arg {
2427         /** the infra cache */
2428         struct infra_cache* infra;
2429         /** the SSL connection */
2430         RES* ssl;
2431         /** the time now */
2432         time_t now;
2433         /** ssl failure? stop writing and skip the rest.  If the tcp
2434          * connection is broken, and writes fail, we then stop writing. */
2435         int ssl_failed;
2436 };
2437
2438 /** callback for every host element in the infra cache */
2439 static void
2440 dump_infra_host(struct lruhash_entry* e, void* arg)
2441 {
2442         struct infra_arg* a = (struct infra_arg*)arg;
2443         struct infra_key* k = (struct infra_key*)e->key;
2444         struct infra_data* d = (struct infra_data*)e->data;
2445         char ip_str[1024];
2446         char name[257];
2447         int port;
2448         if(a->ssl_failed)
2449                 return;
2450         addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
2451         dname_str(k->zonename, name);
2452         port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port);
2453         if(port != UNBOUND_DNS_PORT) {
2454                 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str),
2455                         "@%d", port);
2456         }
2457         /* skip expired stuff (only backed off) */
2458         if(d->ttl < a->now) {
2459                 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
2460                         if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
2461                                 name, d->rtt.rto))  {
2462                                 a->ssl_failed = 1;
2463                                 return;
2464                         }
2465                 }
2466                 return;
2467         }
2468         if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d "
2469                 "tA %d tAAAA %d tother %d "
2470                 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
2471                 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now),
2472                 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
2473                 d->timeout_A, d->timeout_AAAA, d->timeout_other,
2474                 (int)d->edns_lame_known, (int)d->edns_version,
2475                 (int)(a->now<d->probedelay?(d->probedelay - a->now):0),
2476                 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
2477                 (int)d->lame_other)) {
2478                 a->ssl_failed = 1;
2479                 return;
2480         }
2481 }
2482
2483 /** do the dump_infra command */
2484 static void
2485 do_dump_infra(RES* ssl, struct worker* worker)
2486 {
2487         struct infra_arg arg;
2488         arg.infra = worker->env.infra_cache;
2489         arg.ssl = ssl;
2490         arg.now = *worker->env.now;
2491         arg.ssl_failed = 0;
2492         slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
2493 }
2494
2495 /** do the log_reopen command */
2496 static void
2497 do_log_reopen(RES* ssl, struct worker* worker)
2498 {
2499         struct config_file* cfg = worker->env.cfg;
2500         send_ok(ssl);
2501         log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
2502 }
2503
2504 /** do the auth_zone_reload command */
2505 static void
2506 do_auth_zone_reload(RES* ssl, struct worker* worker, char* arg)
2507 {
2508         size_t nmlen;
2509         int nmlabs;
2510         uint8_t* nm = NULL;
2511         struct auth_zones* az = worker->env.auth_zones;
2512         struct auth_zone* z = NULL;
2513         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2514                 return;
2515         if(az) {
2516                 lock_rw_rdlock(&az->lock);
2517                 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2518                 if(z) {
2519                         lock_rw_wrlock(&z->lock);
2520                 }
2521                 lock_rw_unlock(&az->lock);
2522         }
2523         free(nm);
2524         if(!z) {
2525                 (void)ssl_printf(ssl, "error no auth-zone %s\n", arg);
2526                 return;
2527         }
2528         if(!auth_zone_read_zonefile(z, worker->env.cfg)) {
2529                 lock_rw_unlock(&z->lock);
2530                 (void)ssl_printf(ssl, "error failed to read %s\n", arg);
2531                 return;
2532         }
2533         lock_rw_unlock(&z->lock);
2534         send_ok(ssl);
2535 }
2536
2537 /** do the auth_zone_transfer command */
2538 static void
2539 do_auth_zone_transfer(RES* ssl, struct worker* worker, char* arg)
2540 {
2541         size_t nmlen;
2542         int nmlabs;
2543         uint8_t* nm = NULL;
2544         struct auth_zones* az = worker->env.auth_zones;
2545         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2546                 return;
2547         if(!az || !auth_zones_startprobesequence(az, &worker->env, nm, nmlen,
2548                 LDNS_RR_CLASS_IN)) {
2549                 (void)ssl_printf(ssl, "error zone xfr task not found %s\n", arg);
2550                 free(nm);
2551                 return;
2552         }
2553         free(nm);
2554         send_ok(ssl);
2555 }
2556
2557 /** do the set_option command */
2558 static void
2559 do_set_option(RES* ssl, struct worker* worker, char* arg)
2560 {
2561         char* arg2;
2562         if(!find_arg2(ssl, arg, &arg2))
2563                 return;
2564         if(!config_set_option(worker->env.cfg, arg, arg2)) {
2565                 (void)ssl_printf(ssl, "error setting option\n");
2566                 return;
2567         }
2568         /* effectuate some arguments */
2569         if(strcmp(arg, "val-override-date:") == 0) {
2570                 int m = modstack_find(&worker->env.mesh->mods, "validator");
2571                 struct val_env* val_env = NULL;
2572                 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m];
2573                 if(val_env)
2574                         val_env->date_override = worker->env.cfg->val_date_override;
2575         }
2576         send_ok(ssl);
2577 }
2578
2579 /* routine to printout option values over SSL */
2580 void remote_get_opt_ssl(char* line, void* arg)
2581 {
2582         RES* ssl = (RES*)arg;
2583         (void)ssl_printf(ssl, "%s\n", line);
2584 }
2585
2586 /** do the get_option command */
2587 static void
2588 do_get_option(RES* ssl, struct worker* worker, char* arg)
2589 {
2590         int r;
2591         r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
2592         if(!r) {
2593                 (void)ssl_printf(ssl, "error unknown option\n");
2594                 return;
2595         }
2596 }
2597
2598 /** do the list_forwards command */
2599 static void
2600 do_list_forwards(RES* ssl, struct worker* worker)
2601 {
2602         /* since its a per-worker structure no locks needed */
2603         struct iter_forwards* fwds = worker->env.fwds;
2604         struct iter_forward_zone* z;
2605         struct trust_anchor* a;
2606         int insecure;
2607         RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
2608                 if(!z->dp) continue; /* skip empty marker for stub */
2609
2610                 /* see if it is insecure */
2611                 insecure = 0;
2612                 if(worker->env.anchors &&
2613                         (a=anchor_find(worker->env.anchors, z->name,
2614                         z->namelabs, z->namelen,  z->dclass))) {
2615                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2616                                 insecure = 1;
2617                         lock_basic_unlock(&a->lock);
2618                 }
2619
2620                 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"),
2621                         z->name, z->dclass, z->dp))
2622                         return;
2623         }
2624 }
2625
2626 /** do the list_stubs command */
2627 static void
2628 do_list_stubs(RES* ssl, struct worker* worker)
2629 {
2630         struct iter_hints_stub* z;
2631         struct trust_anchor* a;
2632         int insecure;
2633         char str[32];
2634         RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
2635
2636                 /* see if it is insecure */
2637                 insecure = 0;
2638                 if(worker->env.anchors &&
2639                         (a=anchor_find(worker->env.anchors, z->node.name,
2640                         z->node.labs, z->node.len,  z->node.dclass))) {
2641                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2642                                 insecure = 1;
2643                         lock_basic_unlock(&a->lock);
2644                 }
2645
2646                 snprintf(str, sizeof(str), "stub %sprime%s",
2647                         (z->noprime?"no":""), (insecure?" +i":""));
2648                 if(!ssl_print_name_dp(ssl, str, z->node.name,
2649                         z->node.dclass, z->dp))
2650                         return;
2651         }
2652 }
2653
2654 /** do the list_auth_zones command */
2655 static void
2656 do_list_auth_zones(RES* ssl, struct auth_zones* az)
2657 {
2658         struct auth_zone* z;
2659         char buf[257], buf2[256];
2660         lock_rw_rdlock(&az->lock);
2661         RBTREE_FOR(z, struct auth_zone*, &az->ztree) {
2662                 lock_rw_rdlock(&z->lock);
2663                 dname_str(z->name, buf);
2664                 if(z->zone_expired)
2665                         snprintf(buf2, sizeof(buf2), "expired");
2666                 else {
2667                         uint32_t serial = 0;
2668                         if(auth_zone_get_serial(z, &serial))
2669                                 snprintf(buf2, sizeof(buf2), "serial %u",
2670                                         (unsigned)serial);
2671                         else    snprintf(buf2, sizeof(buf2), "no serial");
2672                 }
2673                 if(!ssl_printf(ssl, "%s\t%s\n", buf, buf2)) {
2674                         /* failure to print */
2675                         lock_rw_unlock(&z->lock);
2676                         lock_rw_unlock(&az->lock);
2677                         return;
2678                 }
2679                 lock_rw_unlock(&z->lock);
2680         }
2681         lock_rw_unlock(&az->lock);
2682 }
2683
2684 /** do the list_local_zones command */
2685 static void
2686 do_list_local_zones(RES* ssl, struct local_zones* zones)
2687 {
2688         struct local_zone* z;
2689         char buf[257];
2690         lock_rw_rdlock(&zones->lock);
2691         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2692                 lock_rw_rdlock(&z->lock);
2693                 dname_str(z->name, buf);
2694                 if(!ssl_printf(ssl, "%s %s\n", buf,
2695                         local_zone_type2str(z->type))) {
2696                         /* failure to print */
2697                         lock_rw_unlock(&z->lock);
2698                         lock_rw_unlock(&zones->lock);
2699                         return;
2700                 }
2701                 lock_rw_unlock(&z->lock);
2702         }
2703         lock_rw_unlock(&zones->lock);
2704 }
2705
2706 /** do the list_local_data command */
2707 static void
2708 do_list_local_data(RES* ssl, struct worker* worker, struct local_zones* zones)
2709 {
2710         struct local_zone* z;
2711         struct local_data* d;
2712         struct local_rrset* p;
2713         char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
2714         size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
2715         lock_rw_rdlock(&zones->lock);
2716         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2717                 lock_rw_rdlock(&z->lock);
2718                 RBTREE_FOR(d, struct local_data*, &z->data) {
2719                         for(p = d->rrsets; p; p = p->next) {
2720                                 struct packed_rrset_data* d =
2721                                         (struct packed_rrset_data*)p->rrset->entry.data;
2722                                 size_t i;
2723                                 for(i=0; i<d->count + d->rrsig_count; i++) {
2724                                         if(!packed_rr_to_string(p->rrset, i,
2725                                                 0, s, slen)) {
2726                                                 if(!ssl_printf(ssl, "BADRR\n")) {
2727                                                         lock_rw_unlock(&z->lock);
2728                                                         lock_rw_unlock(&zones->lock);
2729                                                         return;
2730                                                 }
2731                                         }
2732                                         if(!ssl_printf(ssl, "%s\n", s)) {
2733                                                 lock_rw_unlock(&z->lock);
2734                                                 lock_rw_unlock(&zones->lock);
2735                                                 return;
2736                                         }
2737                                 }
2738                         }
2739                 }
2740                 lock_rw_unlock(&z->lock);
2741         }
2742         lock_rw_unlock(&zones->lock);
2743 }
2744
2745 /** do the view_list_local_zones command */
2746 static void
2747 do_view_list_local_zones(RES* ssl, struct worker* worker, char* arg)
2748 {
2749         struct view* v = views_find_view(worker->daemon->views,
2750                 arg, 0 /* get read lock*/);
2751         if(!v) {
2752                 ssl_printf(ssl,"no view with name: %s\n", arg);
2753                 return;
2754         }
2755         if(v->local_zones) {
2756                 do_list_local_zones(ssl, v->local_zones);
2757         }
2758         lock_rw_unlock(&v->lock);
2759 }
2760
2761 /** do the view_list_local_data command */
2762 static void
2763 do_view_list_local_data(RES* ssl, struct worker* worker, char* arg)
2764 {
2765         struct view* v = views_find_view(worker->daemon->views,
2766                 arg, 0 /* get read lock*/);
2767         if(!v) {
2768                 ssl_printf(ssl,"no view with name: %s\n", arg);
2769                 return;
2770         }
2771         if(v->local_zones) {
2772                 do_list_local_data(ssl, worker, v->local_zones);
2773         }
2774         lock_rw_unlock(&v->lock);
2775 }
2776
2777 /** struct for user arg ratelimit list */
2778 struct ratelimit_list_arg {
2779         /** the infra cache */
2780         struct infra_cache* infra;
2781         /** the SSL to print to */
2782         RES* ssl;
2783         /** all or only ratelimited */
2784         int all;
2785         /** current time */
2786         time_t now;
2787 };
2788
2789 #define ip_ratelimit_list_arg ratelimit_list_arg
2790
2791 /** list items in the ratelimit table */
2792 static void
2793 rate_list(struct lruhash_entry* e, void* arg)
2794 {
2795         struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg;
2796         struct rate_key* k = (struct rate_key*)e->key;
2797         struct rate_data* d = (struct rate_data*)e->data;
2798         char buf[257];
2799         int lim = infra_find_ratelimit(a->infra, k->name, k->namelen);
2800         int max = infra_rate_max(d, a->now);
2801         if(a->all == 0) {
2802                 if(max < lim)
2803                         return;
2804         }
2805         dname_str(k->name, buf);
2806         ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim);
2807 }
2808
2809 /** list items in the ip_ratelimit table */
2810 static void
2811 ip_rate_list(struct lruhash_entry* e, void* arg)
2812 {
2813         char ip[128];
2814         struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg;
2815         struct ip_rate_key* k = (struct ip_rate_key*)e->key;
2816         struct ip_rate_data* d = (struct ip_rate_data*)e->data;
2817         int lim = infra_ip_ratelimit;
2818         int max = infra_rate_max(d, a->now);
2819         if(a->all == 0) {
2820                 if(max < lim)
2821                         return;
2822         }
2823         addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip));
2824         ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim);
2825 }
2826
2827 /** do the ratelimit_list command */
2828 static void
2829 do_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2830 {
2831         struct ratelimit_list_arg a;
2832         a.all = 0;
2833         a.infra = worker->env.infra_cache;
2834         a.now = *worker->env.now;
2835         a.ssl = ssl;
2836         arg = skipwhite(arg);
2837         if(strcmp(arg, "+a") == 0)
2838                 a.all = 1;
2839         if(a.infra->domain_rates==NULL ||
2840                 (a.all == 0 && infra_dp_ratelimit == 0))
2841                 return;
2842         slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a);
2843 }
2844
2845 /** do the ip_ratelimit_list command */
2846 static void
2847 do_ip_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2848 {
2849         struct ip_ratelimit_list_arg a;
2850         a.all = 0;
2851         a.infra = worker->env.infra_cache;
2852         a.now = *worker->env.now;
2853         a.ssl = ssl;
2854         arg = skipwhite(arg);
2855         if(strcmp(arg, "+a") == 0)
2856                 a.all = 1;
2857         if(a.infra->client_ip_rates==NULL ||
2858                 (a.all == 0 && infra_ip_ratelimit == 0))
2859                 return;
2860         slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a);
2861 }
2862
2863 /** tell other processes to execute the command */
2864 static void
2865 distribute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd)
2866 {
2867         int i;
2868         if(!cmd || !ssl)
2869                 return;
2870         /* skip i=0 which is me */
2871         for(i=1; i<rc->worker->daemon->num; i++) {
2872                 worker_send_cmd(rc->worker->daemon->workers[i],
2873                         worker_cmd_remote);
2874                 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
2875                         (uint8_t*)cmd, strlen(cmd)+1, 0)) {
2876                         ssl_printf(ssl, "error could not distribute cmd\n");
2877                         return;
2878                 }
2879         }
2880 }
2881
2882 /** check for name with end-of-string, space or tab after it */
2883 static int
2884 cmdcmp(char* p, const char* cmd, size_t len)
2885 {
2886         return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
2887 }
2888
2889 /** execute a remote control command */
2890 static void
2891 execute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd,
2892         struct worker* worker)
2893 {
2894         char* p = skipwhite(cmd);
2895         /* compare command */
2896         if(cmdcmp(p, "stop", 4)) {
2897                 do_stop(ssl, worker);
2898                 return;
2899         } else if(cmdcmp(p, "reload", 6)) {
2900                 do_reload(ssl, worker);
2901                 return;
2902         } else if(cmdcmp(p, "stats_noreset", 13)) {
2903                 do_stats(ssl, worker, 0);
2904                 return;
2905         } else if(cmdcmp(p, "stats", 5)) {
2906                 do_stats(ssl, worker, 1);
2907                 return;
2908         } else if(cmdcmp(p, "status", 6)) {
2909                 do_status(ssl, worker);
2910                 return;
2911         } else if(cmdcmp(p, "dump_cache", 10)) {
2912                 (void)dump_cache(ssl, worker);
2913                 return;
2914         } else if(cmdcmp(p, "load_cache", 10)) {
2915                 if(load_cache(ssl, worker)) send_ok(ssl);
2916                 return;
2917         } else if(cmdcmp(p, "list_forwards", 13)) {
2918                 do_list_forwards(ssl, worker);
2919                 return;
2920         } else if(cmdcmp(p, "list_stubs", 10)) {
2921                 do_list_stubs(ssl, worker);
2922                 return;
2923         } else if(cmdcmp(p, "list_insecure", 13)) {
2924                 do_insecure_list(ssl, worker);
2925                 return;
2926         } else if(cmdcmp(p, "list_local_zones", 16)) {
2927                 do_list_local_zones(ssl, worker->daemon->local_zones);
2928                 return;
2929         } else if(cmdcmp(p, "list_local_data", 15)) {
2930                 do_list_local_data(ssl, worker, worker->daemon->local_zones);
2931                 return;
2932         } else if(cmdcmp(p, "view_list_local_zones", 21)) {
2933                 do_view_list_local_zones(ssl, worker, skipwhite(p+21));
2934                 return;
2935         } else if(cmdcmp(p, "view_list_local_data", 20)) {
2936                 do_view_list_local_data(ssl, worker, skipwhite(p+20));
2937                 return;
2938         } else if(cmdcmp(p, "ratelimit_list", 14)) {
2939                 do_ratelimit_list(ssl, worker, p+14);
2940                 return;
2941         } else if(cmdcmp(p, "ip_ratelimit_list", 17)) {
2942                 do_ip_ratelimit_list(ssl, worker, p+17);
2943                 return;
2944         } else if(cmdcmp(p, "list_auth_zones", 15)) {
2945                 do_list_auth_zones(ssl, worker->env.auth_zones);
2946                 return;
2947         } else if(cmdcmp(p, "auth_zone_reload", 16)) {
2948                 do_auth_zone_reload(ssl, worker, skipwhite(p+16));
2949                 return;
2950         } else if(cmdcmp(p, "auth_zone_transfer", 18)) {
2951                 do_auth_zone_transfer(ssl, worker, skipwhite(p+18));
2952                 return;
2953         } else if(cmdcmp(p, "stub_add", 8)) {
2954                 /* must always distribute this cmd */
2955                 if(rc) distribute_cmd(rc, ssl, cmd);
2956                 do_stub_add(ssl, worker, skipwhite(p+8));
2957                 return;
2958         } else if(cmdcmp(p, "stub_remove", 11)) {
2959                 /* must always distribute this cmd */
2960                 if(rc) distribute_cmd(rc, ssl, cmd);
2961                 do_stub_remove(ssl, worker, skipwhite(p+11));
2962                 return;
2963         } else if(cmdcmp(p, "forward_add", 11)) {
2964                 /* must always distribute this cmd */
2965                 if(rc) distribute_cmd(rc, ssl, cmd);
2966                 do_forward_add(ssl, worker, skipwhite(p+11));
2967                 return;
2968         } else if(cmdcmp(p, "forward_remove", 14)) {
2969                 /* must always distribute this cmd */
2970                 if(rc) distribute_cmd(rc, ssl, cmd);
2971                 do_forward_remove(ssl, worker, skipwhite(p+14));
2972                 return;
2973         } else if(cmdcmp(p, "insecure_add", 12)) {
2974                 /* must always distribute this cmd */
2975                 if(rc) distribute_cmd(rc, ssl, cmd);
2976                 do_insecure_add(ssl, worker, skipwhite(p+12));
2977                 return;
2978         } else if(cmdcmp(p, "insecure_remove", 15)) {
2979                 /* must always distribute this cmd */
2980                 if(rc) distribute_cmd(rc, ssl, cmd);
2981                 do_insecure_remove(ssl, worker, skipwhite(p+15));
2982                 return;
2983         } else if(cmdcmp(p, "forward", 7)) {
2984                 /* must always distribute this cmd */
2985                 if(rc) distribute_cmd(rc, ssl, cmd);
2986                 do_forward(ssl, worker, skipwhite(p+7));
2987                 return;
2988         } else if(cmdcmp(p, "flush_stats", 11)) {
2989                 /* must always distribute this cmd */
2990                 if(rc) distribute_cmd(rc, ssl, cmd);
2991                 do_flush_stats(ssl, worker);
2992                 return;
2993         } else if(cmdcmp(p, "flush_requestlist", 17)) {
2994                 /* must always distribute this cmd */
2995                 if(rc) distribute_cmd(rc, ssl, cmd);
2996                 do_flush_requestlist(ssl, worker);
2997                 return;
2998         } else if(cmdcmp(p, "lookup", 6)) {
2999                 do_lookup(ssl, worker, skipwhite(p+6));
3000                 return;
3001         }
3002
3003 #ifdef THREADS_DISABLED
3004         /* other processes must execute the command as well */
3005         /* commands that should not be distributed, returned above. */
3006         if(rc) { /* only if this thread is the master (rc) thread */
3007                 /* done before the code below, which may split the string */
3008                 distribute_cmd(rc, ssl, cmd);
3009         }
3010 #endif
3011         if(cmdcmp(p, "verbosity", 9)) {
3012                 do_verbosity(ssl, skipwhite(p+9));
3013         } else if(cmdcmp(p, "local_zone_remove", 17)) {
3014                 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3015         } else if(cmdcmp(p, "local_zones_remove", 18)) {
3016                 do_zones_remove(ssl, worker->daemon->local_zones);
3017         } else if(cmdcmp(p, "local_zone", 10)) {
3018                 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3019         } else if(cmdcmp(p, "local_zones", 11)) {
3020                 do_zones_add(ssl, worker->daemon->local_zones);
3021         } else if(cmdcmp(p, "local_data_remove", 17)) {
3022                 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3023         } else if(cmdcmp(p, "local_datas_remove", 18)) {
3024                 do_datas_remove(ssl, worker->daemon->local_zones);
3025         } else if(cmdcmp(p, "local_data", 10)) {
3026                 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3027         } else if(cmdcmp(p, "local_datas", 11)) {
3028                 do_datas_add(ssl, worker->daemon->local_zones);
3029         } else if(cmdcmp(p, "view_local_zone_remove", 22)) {
3030                 do_view_zone_remove(ssl, worker, skipwhite(p+22));
3031         } else if(cmdcmp(p, "view_local_zone", 15)) {
3032                 do_view_zone_add(ssl, worker, skipwhite(p+15));
3033         } else if(cmdcmp(p, "view_local_data_remove", 22)) {
3034                 do_view_data_remove(ssl, worker, skipwhite(p+22));
3035         } else if(cmdcmp(p, "view_local_datas_remove", 23)){
3036                 do_view_datas_remove(ssl, worker, skipwhite(p+23));
3037         } else if(cmdcmp(p, "view_local_data", 15)) {
3038                 do_view_data_add(ssl, worker, skipwhite(p+15));
3039         } else if(cmdcmp(p, "view_local_datas", 16)) {
3040                 do_view_datas_add(ssl, worker, skipwhite(p+16));
3041         } else if(cmdcmp(p, "flush_zone", 10)) {
3042                 do_flush_zone(ssl, worker, skipwhite(p+10));
3043         } else if(cmdcmp(p, "flush_type", 10)) {
3044                 do_flush_type(ssl, worker, skipwhite(p+10));
3045         } else if(cmdcmp(p, "flush_infra", 11)) {
3046                 do_flush_infra(ssl, worker, skipwhite(p+11));
3047         } else if(cmdcmp(p, "flush", 5)) {
3048                 do_flush_name(ssl, worker, skipwhite(p+5));
3049         } else if(cmdcmp(p, "dump_requestlist", 16)) {
3050                 do_dump_requestlist(ssl, worker);
3051         } else if(cmdcmp(p, "dump_infra", 10)) {
3052                 do_dump_infra(ssl, worker);
3053         } else if(cmdcmp(p, "log_reopen", 10)) {
3054                 do_log_reopen(ssl, worker);
3055         } else if(cmdcmp(p, "set_option", 10)) {
3056                 do_set_option(ssl, worker, skipwhite(p+10));
3057         } else if(cmdcmp(p, "get_option", 10)) {
3058                 do_get_option(ssl, worker, skipwhite(p+10));
3059         } else if(cmdcmp(p, "flush_bogus", 11)) {
3060                 do_flush_bogus(ssl, worker);
3061         } else if(cmdcmp(p, "flush_negative", 14)) {
3062                 do_flush_negative(ssl, worker);
3063         } else {
3064                 (void)ssl_printf(ssl, "error unknown command '%s'\n", p);
3065         }
3066 }
3067
3068 void
3069 daemon_remote_exec(struct worker* worker)
3070 {
3071         /* read the cmd string */
3072         uint8_t* msg = NULL;
3073         uint32_t len = 0;
3074         if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
3075                 log_err("daemon_remote_exec: tube_read_msg failed");
3076                 return;
3077         }
3078         verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
3079         execute_cmd(NULL, NULL, (char*)msg, worker);
3080         free(msg);
3081 }
3082
3083 /** handle remote control request */
3084 static void
3085 handle_req(struct daemon_remote* rc, struct rc_state* s, RES* res)
3086 {
3087         int r;
3088         char pre[10];
3089         char magic[7];
3090         char buf[1024];
3091 #ifdef USE_WINSOCK
3092         /* makes it possible to set the socket blocking again. */
3093         /* basically removes it from winsock_event ... */
3094         WSAEventSelect(s->c->fd, NULL, 0);
3095 #endif
3096         fd_set_block(s->c->fd);
3097
3098         /* try to read magic UBCT[version]_space_ string */
3099         if(res->ssl) {
3100                 ERR_clear_error();
3101                 if((r=SSL_read(res->ssl, magic, (int)sizeof(magic)-1)) <= 0) {
3102                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN)
3103                                 return;
3104                         log_crypto_err("could not SSL_read");
3105                         return;
3106                 }
3107         } else {
3108                 while(1) {
3109                         ssize_t rr = recv(res->fd, magic, sizeof(magic)-1, 0);
3110                         if(rr <= 0) {
3111                                 if(rr == 0) return;
3112                                 if(errno == EINTR || errno == EAGAIN)
3113                                         continue;
3114                                 log_err("could not recv: %s", sock_strerror(errno));
3115                                 return;
3116                         }
3117                         r = (int)rr;
3118                         break;
3119                 }
3120         }
3121         magic[6] = 0;
3122         if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
3123                 verbose(VERB_QUERY, "control connection has bad magic string");
3124                 /* probably wrong tool connected, ignore it completely */
3125                 return;
3126         }
3127
3128         /* read the command line */
3129         if(!ssl_read_line(res, buf, sizeof(buf))) {
3130                 return;
3131         }
3132         snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
3133         if(strcmp(magic, pre) != 0) {
3134                 verbose(VERB_QUERY, "control connection had bad "
3135                         "version %s, cmd: %s", magic, buf);
3136                 ssl_printf(res, "error version mismatch\n");
3137                 return;
3138         }
3139         verbose(VERB_DETAIL, "control cmd: %s", buf);
3140
3141         /* figure out what to do */
3142         execute_cmd(rc, res, buf, rc->worker);
3143 }
3144
3145 /** handle SSL_do_handshake changes to the file descriptor to wait for later */
3146 static int
3147 remote_handshake_later(struct daemon_remote* rc, struct rc_state* s,
3148         struct comm_point* c, int r, int r2)
3149 {
3150         if(r2 == SSL_ERROR_WANT_READ) {
3151                 if(s->shake_state == rc_hs_read) {
3152                         /* try again later */
3153                         return 0;
3154                 }
3155                 s->shake_state = rc_hs_read;
3156                 comm_point_listen_for_rw(c, 1, 0);
3157                 return 0;
3158         } else if(r2 == SSL_ERROR_WANT_WRITE) {
3159                 if(s->shake_state == rc_hs_write) {
3160                         /* try again later */
3161                         return 0;
3162                 }
3163                 s->shake_state = rc_hs_write;
3164                 comm_point_listen_for_rw(c, 0, 1);
3165                 return 0;
3166         } else {
3167                 if(r == 0)
3168                         log_err("remote control connection closed prematurely");
3169                 log_addr(VERB_OPS, "failed connection from",
3170                         &s->c->repinfo.addr, s->c->repinfo.addrlen);
3171                 log_crypto_err("remote control failed ssl");
3172                 clean_point(rc, s);
3173         }
3174         return 0;
3175 }
3176
3177 int remote_control_callback(struct comm_point* c, void* arg, int err,
3178         struct comm_reply* ATTR_UNUSED(rep))
3179 {
3180         RES res;
3181         struct rc_state* s = (struct rc_state*)arg;
3182         struct daemon_remote* rc = s->rc;
3183         int r;
3184         if(err != NETEVENT_NOERROR) {
3185                 if(err==NETEVENT_TIMEOUT)
3186                         log_err("remote control timed out");
3187                 clean_point(rc, s);
3188                 return 0;
3189         }
3190         if(s->ssl) {
3191                 /* (continue to) setup the SSL connection */
3192                 ERR_clear_error();
3193                 r = SSL_do_handshake(s->ssl);
3194                 if(r != 1) {
3195                         int r2 = SSL_get_error(s->ssl, r);
3196                         return remote_handshake_later(rc, s, c, r, r2);
3197                 }
3198                 s->shake_state = rc_none;
3199         }
3200
3201         /* once handshake has completed, check authentication */
3202         if (!rc->use_cert) {
3203                 verbose(VERB_ALGO, "unauthenticated remote control connection");
3204         } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
3205                 X509* x = SSL_get_peer_certificate(s->ssl);
3206                 if(!x) {
3207                         verbose(VERB_DETAIL, "remote control connection "
3208                                 "provided no client certificate");
3209                         clean_point(rc, s);
3210                         return 0;
3211                 }
3212                 verbose(VERB_ALGO, "remote control connection authenticated");
3213                 X509_free(x);
3214         } else {
3215                 verbose(VERB_DETAIL, "remote control connection failed to "
3216                         "authenticate with client certificate");
3217                 clean_point(rc, s);
3218                 return 0;
3219         }
3220
3221         /* if OK start to actually handle the request */
3222         res.ssl = s->ssl;
3223         res.fd = c->fd;
3224         handle_req(rc, s, &res);
3225
3226         verbose(VERB_ALGO, "remote control operation completed");
3227         clean_point(rc, s);
3228         return 0;
3229 }