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, cfg->ip_freebind, cfg->use_systemd, cfg->ip_dscp);
 333                 freeaddrinfo(res);
 334         }
 335
 336         if(fd == -1 && noproto) {
 337                 if(!noproto_is_err)
 338                         return 1; /* return success, but do nothing */
 339                 log_err("cannot open control interface %s %d : "
 340                         "protocol not supported", ip, nr);
 341                 return 0;
 342         }
 343         if(fd == -1) {
 344                 log_err("cannot open control interface %s %d", ip, nr);
 345                 return 0;
 346         }
 347
 348         /* alloc */
 349         n = (struct listen_port*)calloc(1, sizeof(*n));
 350         if(!n) {
 351 #ifndef USE_WINSOCK
 352                 close(fd);
 353 #else
 354                 closesocket(fd);
 355 #endif
 356                 log_err("out of memory");
 357                 return 0;
 358         }
 359         n->next = *list;
 360         *list = n;
 361         n->fd = fd;
 362         return 1;
 363 }
 364
 365 struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 366 {
 367         struct listen_port* l = NULL;
 368         log_assert(cfg->remote_control_enable && cfg->control_port);
 369         if(cfg->control_ifs.first) {
 370                 struct config_strlist* p;
 371                 for(p = cfg->control_ifs.first; p; p = p->next) {
 372                         if(!add_open(p->str, cfg->control_port, &l, 1, cfg)) {
 373                                 listening_ports_free(l);
 374                                 return NULL;
 375                         }
 376                 }
 377         } else {
 378                 /* defaults */
 379                 if(cfg->do_ip6 &&
 380                         !add_open("::1", cfg->control_port, &l, 0, cfg)) {
 381                         listening_ports_free(l);
 382                         return NULL;
 383                 }
 384                 if(cfg->do_ip4 &&
 385                         !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) {
 386                         listening_ports_free(l);
 387                         return NULL;
 388                 }
 389         }
 390         return l;
 391 }
 392
 393 /** open accept commpoint */
 394 static int
 395 accept_open(struct daemon_remote* rc, int fd)
 396 {
 397         struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
 398         if(!n) {
 399                 log_err("out of memory");
 400                 return 0;
 401         }
 402         n->next = rc->accept_list;
 403         rc->accept_list = n;
 404         /* open commpt */
 405         n->com = comm_point_create_raw(rc->worker->base, fd, 0,
 406                 &remote_accept_callback, rc);
 407         if(!n->com)
 408                 return 0;
 409         /* keep this port open, its fd is kept in the rc portlist */
 410         n->com->do_not_close = 1;
 411         return 1;
 412 }
 413
 414 int daemon_remote_open_accept(struct daemon_remote* rc,
 415         struct listen_port* ports, struct worker* worker)
 416 {
 417         struct listen_port* p;
 418         rc->worker = worker;
 419         for(p = ports; p; p = p->next) {
 420                 if(!accept_open(rc, p->fd)) {
 421                         log_err("could not create accept comm point");
 422                         return 0;
 423                 }
 424         }
 425         return 1;
 426 }
 427
 428 void daemon_remote_stop_accept(struct daemon_remote* rc)
 429 {
 430         struct listen_list* p;
 431         for(p=rc->accept_list; p; p=p->next) {
 432                 comm_point_stop_listening(p->com);
 433         }
 434 }
 435
 436 void daemon_remote_start_accept(struct daemon_remote* rc)
 437 {
 438         struct listen_list* p;
 439         for(p=rc->accept_list; p; p=p->next) {
 440                 comm_point_start_listening(p->com, -1, -1);
 441         }
 442 }
 443
 444 int remote_accept_callback(struct comm_point* c, void* arg, int err,
 445         struct comm_reply* ATTR_UNUSED(rep))
 446 {
 447         struct daemon_remote* rc = (struct daemon_remote*)arg;
 448         struct sockaddr_storage addr;
 449         socklen_t addrlen;
 450         int newfd;
 451         struct rc_state* n;
 452         if(err != NETEVENT_NOERROR) {
 453                 log_err("error %d on remote_accept_callback", err);
 454                 return 0;
 455         }
 456         /* perform the accept */
 457         newfd = comm_point_perform_accept(c, &addr, &addrlen);
 458         if(newfd == -1)
 459                 return 0;
 460         /* create new commpoint unless we are servicing already */
 461         if(rc->active >= rc->max_active) {
 462                 log_warn("drop incoming remote control: too many connections");
 463         close_exit:
 464 #ifndef USE_WINSOCK
 465                 close(newfd);
 466 #else
 467                 closesocket(newfd);
 468 #endif
 469                 return 0;
 470         }
 471
 472         /* setup commpoint to service the remote control command */
 473         n = (struct rc_state*)calloc(1, sizeof(*n));
 474         if(!n) {
 475                 log_err("out of memory");
 476                 goto close_exit;
 477         }
 478         n->fd = newfd;
 479         /* start in reading state */
 480         n->c = comm_point_create_raw(rc->worker->base, newfd, 0,
 481                 &remote_control_callback, n);
 482         if(!n->c) {
 483                 log_err("out of memory");
 484                 free(n);
 485                 goto close_exit;
 486         }
 487         log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
 488         n->c->do_not_close = 0;
 489         comm_point_stop_listening(n->c);
 490         comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
 491         memcpy(&n->c->repinfo.addr, &addr, addrlen);
 492         n->c->repinfo.addrlen = addrlen;
 493         if(rc->use_cert) {
 494                 n->shake_state = rc_hs_read;
 495                 n->ssl = SSL_new(rc->ctx);
 496                 if(!n->ssl) {
 497                         log_crypto_err("could not SSL_new");
 498                         comm_point_delete(n->c);
 499                         free(n);
 500                         goto close_exit;
 501                 }
 502                 SSL_set_accept_state(n->ssl);
 503                 (void)SSL_set_mode(n->ssl, (long)SSL_MODE_AUTO_RETRY);
 504                 if(!SSL_set_fd(n->ssl, newfd)) {
 505                         log_crypto_err("could not SSL_set_fd");
 506                         SSL_free(n->ssl);
 507                         comm_point_delete(n->c);
 508                         free(n);
 509                         goto close_exit;
 510                 }
 511         } else {
 512                 n->ssl = NULL;
 513         }
 514
 515         n->rc = rc;
 516         n->next = rc->busy_list;
 517         rc->busy_list = n;
 518         rc->active ++;
 519
 520         /* perform the first nonblocking read already, for windows,
 521          * so it can return wouldblock. could be faster too. */
 522         (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
 523         return 0;
 524 }
 525
 526 /** delete from list */
 527 static void
 528 state_list_remove_elem(struct rc_state** list, struct comm_point* c)
 529 {
 530         while(*list) {
 531                 if( (*list)->c == c) {
 532                         *list = (*list)->next;
 533                         return;
 534                 }
 535                 list = &(*list)->next;
 536         }
 537 }
 538
 539 /** decrease active count and remove commpoint from busy list */
 540 static void
 541 clean_point(struct daemon_remote* rc, struct rc_state* s)
 542 {
 543         state_list_remove_elem(&rc->busy_list, s->c);
 544         rc->active --;
 545         if(s->ssl) {
 546                 SSL_shutdown(s->ssl);
 547                 SSL_free(s->ssl);
 548         }
 549         comm_point_delete(s->c);
 550         free(s);
 551 }
 552
 553 int
 554 ssl_print_text(RES* res, const char* text)
 555 {
 556         int r;
 557         if(!res)
 558                 return 0;
 559         if(res->ssl) {
 560                 ERR_clear_error();
 561                 if((r=SSL_write(res->ssl, text, (int)strlen(text))) <= 0) {
 562                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 563                                 verbose(VERB_QUERY, "warning, in SSL_write, peer "
 564                                         "closed connection");
 565                                 return 0;
 566                         }
 567                         log_crypto_err("could not SSL_write");
 568                         return 0;
 569                 }
 570         } else {
 571                 size_t at = 0;
 572                 while(at < strlen(text)) {
 573                         ssize_t r = send(res->fd, text+at, strlen(text)-at, 0);
 574                         if(r == -1) {
 575                                 if(errno == EAGAIN || errno == EINTR)
 576                                         continue;
 577 #ifndef USE_WINSOCK
 578                                 log_err("could not send: %s", strerror(errno));
 579 #else
 580                                 log_err("could not send: %s", wsa_strerror(WSAGetLastError()));
 581 #endif
 582                                 return 0;
 583                         }
 584                         at += r;
 585                 }
 586         }
 587         return 1;
 588 }
 589
 590 /** print text over the ssl connection */
 591 static int
 592 ssl_print_vmsg(RES* ssl, const char* format, va_list args)
 593 {
 594         char msg[1024];
 595         vsnprintf(msg, sizeof(msg), format, args);
 596         return ssl_print_text(ssl, msg);
 597 }
 598
 599 /** printf style printing to the ssl connection */
 600 int ssl_printf(RES* ssl, const char* format, ...)
 601 {
 602         va_list args;
 603         int ret;
 604         va_start(args, format);
 605         ret = ssl_print_vmsg(ssl, format, args);
 606         va_end(args);
 607         return ret;
 608 }
 609
 610 int
 611 ssl_read_line(RES* res, char* buf, size_t max)
 612 {
 613         int r;
 614         size_t len = 0;
 615         if(!res)
 616                 return 0;
 617         while(len < max) {
 618                 if(res->ssl) {
 619                         ERR_clear_error();
 620                         if((r=SSL_read(res->ssl, buf+len, 1)) <= 0) {
 621                                 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 622                                         buf[len] = 0;
 623                                         return 1;
 624                                 }
 625                                 log_crypto_err("could not SSL_read");
 626                                 return 0;
 627                         }
 628                 } else {
 629                         while(1) {
 630                                 ssize_t rr = recv(res->fd, buf+len, 1, 0);
 631                                 if(rr <= 0) {
 632                                         if(rr == 0) {
 633                                                 buf[len] = 0;
 634                                                 return 1;
 635                                         }
 636                                         if(errno == EINTR || errno == EAGAIN)
 637                                                 continue;
 638 #ifndef USE_WINSOCK
 639                                         log_err("could not recv: %s", strerror(errno));
 640 #else
 641                                         log_err("could not recv: %s", wsa_strerror(WSAGetLastError()));
 642 #endif
 643                                         return 0;
 644                                 }
 645                                 break;
 646                         }
 647                 }
 648                 if(buf[len] == '\n') {
 649                         /* return string without \n */
 650                         buf[len] = 0;
 651                         return 1;
 652                 }
 653                 len++;
 654         }
 655         buf[max-1] = 0;
 656         log_err("control line too long (%d): %s", (int)max, buf);
 657         return 0;
 658 }
 659
 660 /** skip whitespace, return new pointer into string */
 661 static char*
 662 skipwhite(char* str)
 663 {
 664         /* EOS \0 is not a space */
 665         while( isspace((unsigned char)*str) )
 666                 str++;
 667         return str;
 668 }
 669
 670 /** send the OK to the control client */
 671 static void send_ok(RES* ssl)
 672 {
 673         (void)ssl_printf(ssl, "ok\n");
 674 }
 675
 676 /** do the stop command */
 677 static void
 678 do_stop(RES* ssl, struct worker* worker)
 679 {
 680         worker->need_to_exit = 1;
 681         comm_base_exit(worker->base);
 682         send_ok(ssl);
 683 }
 684
 685 /** do the reload command */
 686 static void
 687 do_reload(RES* ssl, struct worker* worker)
 688 {
 689         worker->need_to_exit = 0;
 690         comm_base_exit(worker->base);
 691         send_ok(ssl);
 692 }
 693
 694 /** do the verbosity command */
 695 static void
 696 do_verbosity(RES* ssl, char* str)
 697 {
 698         int val = atoi(str);
 699         if(val == 0 && strcmp(str, "0") != 0) {
 700                 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
 701                 return;
 702         }
 703         verbosity = val;
 704         send_ok(ssl);
 705 }
 706
 707 /** print stats from statinfo */
 708 static int
 709 print_stats(RES* ssl, const char* nm, struct ub_stats_info* s)
 710 {
 711         struct timeval sumwait, avg;
 712         if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm,
 713                 (unsigned long)s->svr.num_queries)) return 0;
 714         if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm,
 715                 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0;
 716         if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm,
 717                 (unsigned long)(s->svr.num_queries
 718                         - s->svr.num_queries_missed_cache))) return 0;
 719         if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm,
 720                 (unsigned long)s->svr.num_queries_missed_cache)) return 0;
 721         if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm,
 722                 (unsigned long)s->svr.num_queries_prefetch)) return 0;
 723         if(!ssl_printf(ssl, "%s.num.expired"SQ"%lu\n", nm,
 724                 (unsigned long)s->svr.ans_expired)) return 0;
 725         if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm,
 726                 (unsigned long)s->mesh_replies_sent)) return 0;
 727 #ifdef USE_DNSCRYPT
 728         if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm,
 729                 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0;
 730         if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm,
 731                 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0;
 732         if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm,
 733                 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0;
 734         if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm,
 735                 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0;
 736 #endif
 737         if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
 738                 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
 739                         (double)s->svr.sum_query_list_size/
 740                         (double)(s->svr.num_queries_missed_cache+
 741                         s->svr.num_queries_prefetch) : 0.0)) return 0;
 742         if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm,
 743                 (unsigned long)s->svr.max_query_list_size)) return 0;
 744         if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm,
 745                 (unsigned long)s->mesh_jostled)) return 0;
 746         if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm,
 747                 (unsigned long)s->mesh_dropped)) return 0;
 748         if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm,
 749                 (unsigned long)s->mesh_num_states)) return 0;
 750         if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm,
 751                 (unsigned long)s->mesh_num_reply_states)) return 0;
 752 #ifndef S_SPLINT_S
 753         sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
 754         sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
 755 #endif
 756         timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
 757         if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
 758                 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
 759         if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm,
 760                 s->mesh_time_median)) return 0;
 761         if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm,
 762                 (unsigned long)s->svr.tcp_accept_usage)) return 0;
 763         return 1;
 764 }
 765
 766 /** print stats for one thread */
 767 static int
 768 print_thread_stats(RES* ssl, int i, struct ub_stats_info* s)
 769 {
 770         char nm[32];
 771         snprintf(nm, sizeof(nm), "thread%d", i);
 772         nm[sizeof(nm)-1]=0;
 773         return print_stats(ssl, nm, s);
 774 }
 775
 776 /** print long number */
 777 static int
 778 print_longnum(RES* ssl, const char* desc, size_t x)
 779 {
 780         if(x > 1024*1024*1024) {
 781                 /* more than a Gb */
 782                 size_t front = x / (size_t)1000000;
 783                 size_t back = x % (size_t)1000000;
 784                 return ssl_printf(ssl, "%s%u%6.6u\n", desc,
 785                         (unsigned)front, (unsigned)back);
 786         } else {
 787                 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x);
 788         }
 789 }
 790
 791 /** print mem stats */
 792 static int
 793 print_mem(RES* ssl, struct worker* worker, struct daemon* daemon,
 794         struct ub_stats_info* s)
 795 {
 796         size_t msg, rrset, val, iter, respip;
 797 #ifdef CLIENT_SUBNET
 798         size_t subnet = 0;
 799 #endif /* CLIENT_SUBNET */
 800 #ifdef USE_IPSECMOD
 801         size_t ipsecmod = 0;
 802 #endif /* USE_IPSECMOD */
 803 #ifdef USE_DNSCRYPT
 804         size_t dnscrypt_shared_secret = 0;
 805         size_t dnscrypt_nonce = 0;
 806 #endif /* USE_DNSCRYPT */
 807 #ifdef WITH_DYNLIBMODULE
 808     size_t dynlib = 0;
 809 #endif /* WITH_DYNLIBMODULE */
 810         msg = slabhash_get_mem(daemon->env->msg_cache);
 811         rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
 812         val = mod_get_mem(&worker->env, "validator");
 813         iter = mod_get_mem(&worker->env, "iterator");
 814         respip = mod_get_mem(&worker->env, "respip");
 815 #ifdef CLIENT_SUBNET
 816         subnet = mod_get_mem(&worker->env, "subnet");
 817 #endif /* CLIENT_SUBNET */
 818 #ifdef USE_IPSECMOD
 819         ipsecmod = mod_get_mem(&worker->env, "ipsecmod");
 820 #endif /* USE_IPSECMOD */
 821 #ifdef USE_DNSCRYPT
 822         if(daemon->dnscenv) {
 823                 dnscrypt_shared_secret = slabhash_get_mem(
 824                         daemon->dnscenv->shared_secrets_cache);
 825                 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache);
 826         }
 827 #endif /* USE_DNSCRYPT */
 828 #ifdef WITH_DYNLIBMODULE
 829     dynlib = mod_get_mem(&worker->env, "dynlib");
 830 #endif /* WITH_DYNLIBMODULE */
 831
 832         if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
 833                 return 0;
 834         if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
 835                 return 0;
 836         if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
 837                 return 0;
 838         if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
 839                 return 0;
 840         if(!print_longnum(ssl, "mem.mod.respip"SQ, respip))
 841                 return 0;
 842 #ifdef CLIENT_SUBNET
 843         if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet))
 844                 return 0;
 845 #endif /* CLIENT_SUBNET */
 846 #ifdef USE_IPSECMOD
 847         if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod))
 848                 return 0;
 849 #endif /* USE_IPSECMOD */
 850 #ifdef USE_DNSCRYPT
 851         if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ,
 852                         dnscrypt_shared_secret))
 853                 return 0;
 854         if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ,
 855                         dnscrypt_nonce))
 856                 return 0;
 857 #endif /* USE_DNSCRYPT */
 858 #ifdef WITH_DYNLIBMODULE
 859         if(!print_longnum(ssl, "mem.mod.dynlibmod"SQ, dynlib))
 860                 return 0;
 861 #endif /* WITH_DYNLIBMODULE */
 862         if(!print_longnum(ssl, "mem.streamwait"SQ,
 863                 (size_t)s->svr.mem_stream_wait))
 864                 return 0;
 865         return 1;
 866 }
 867
 868 /** print uptime stats */
 869 static int
 870 print_uptime(RES* ssl, struct worker* worker, int reset)
 871 {
 872         struct timeval now = *worker->env.now_tv;
 873         struct timeval up, dt;
 874         timeval_subtract(&up, &now, &worker->daemon->time_boot);
 875         timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
 876         if(reset)
 877                 worker->daemon->time_last_stat = now;
 878         if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n",
 879                 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
 880         if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n",
 881                 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
 882         if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n",
 883                 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
 884         return 1;
 885 }
 886
 887 /** print extended histogram */
 888 static int
 889 print_hist(RES* ssl, struct ub_stats_info* s)
 890 {
 891         struct timehist* hist;
 892         size_t i;
 893         hist = timehist_setup();
 894         if(!hist) {
 895                 log_err("out of memory");
 896                 return 0;
 897         }
 898         timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
 899         for(i=0; i<hist->num; i++) {
 900                 if(!ssl_printf(ssl,
 901                         "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
 902                         (int)hist->buckets[i].lower.tv_sec,
 903                         (int)hist->buckets[i].lower.tv_usec,
 904                         (int)hist->buckets[i].upper.tv_sec,
 905                         (int)hist->buckets[i].upper.tv_usec,
 906                         (unsigned long)hist->buckets[i].count)) {
 907                         timehist_delete(hist);
 908                         return 0;
 909                 }
 910         }
 911         timehist_delete(hist);
 912         return 1;
 913 }
 914
 915 /** print extended stats */
 916 static int
 917 print_ext(RES* ssl, struct ub_stats_info* s)
 918 {
 919         int i;
 920         char nm[32];
 921         const sldns_rr_descriptor* desc;
 922         const sldns_lookup_table* lt;
 923         /* TYPE */
 924         for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
 925                 if(inhibit_zero && s->svr.qtype[i] == 0)
 926                         continue;
 927                 desc = sldns_rr_descript((uint16_t)i);
 928                 if(desc && desc->_name) {
 929                         snprintf(nm, sizeof(nm), "%s", desc->_name);
 930                 } else if (i == LDNS_RR_TYPE_IXFR) {
 931                         snprintf(nm, sizeof(nm), "IXFR");
 932                 } else if (i == LDNS_RR_TYPE_AXFR) {
 933                         snprintf(nm, sizeof(nm), "AXFR");
 934                 } else if (i == LDNS_RR_TYPE_MAILA) {
 935                         snprintf(nm, sizeof(nm), "MAILA");
 936                 } else if (i == LDNS_RR_TYPE_MAILB) {
 937                         snprintf(nm, sizeof(nm), "MAILB");
 938                 } else if (i == LDNS_RR_TYPE_ANY) {
 939                         snprintf(nm, sizeof(nm), "ANY");
 940                 } else {
 941                         snprintf(nm, sizeof(nm), "TYPE%d", i);
 942                 }
 943                 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n",
 944                         nm, (unsigned long)s->svr.qtype[i])) return 0;
 945         }
 946         if(!inhibit_zero || s->svr.qtype_big) {
 947                 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n",
 948                         (unsigned long)s->svr.qtype_big)) return 0;
 949         }
 950         /* CLASS */
 951         for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
 952                 if(inhibit_zero && s->svr.qclass[i] == 0)
 953                         continue;
 954                 lt = sldns_lookup_by_id(sldns_rr_classes, i);
 955                 if(lt && lt->name) {
 956                         snprintf(nm, sizeof(nm), "%s", lt->name);
 957                 } else {
 958                         snprintf(nm, sizeof(nm), "CLASS%d", i);
 959                 }
 960                 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n",
 961                         nm, (unsigned long)s->svr.qclass[i])) return 0;
 962         }
 963         if(!inhibit_zero || s->svr.qclass_big) {
 964                 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n",
 965                         (unsigned long)s->svr.qclass_big)) return 0;
 966         }
 967         /* OPCODE */
 968         for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
 969                 if(inhibit_zero && s->svr.qopcode[i] == 0)
 970                         continue;
 971                 lt = sldns_lookup_by_id(sldns_opcodes, i);
 972                 if(lt && lt->name) {
 973                         snprintf(nm, sizeof(nm), "%s", lt->name);
 974                 } else {
 975                         snprintf(nm, sizeof(nm), "OPCODE%d", i);
 976                 }
 977                 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n",
 978                         nm, (unsigned long)s->svr.qopcode[i])) return 0;
 979         }
 980         /* transport */
 981         if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n",
 982                 (unsigned long)s->svr.qtcp)) return 0;
 983         if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n",
 984                 (unsigned long)s->svr.qtcp_outgoing)) return 0;
 985         if(!ssl_printf(ssl, "num.query.tls"SQ"%lu\n",
 986                 (unsigned long)s->svr.qtls)) return 0;
 987         if(!ssl_printf(ssl, "num.query.tls.resume"SQ"%lu\n",
 988                 (unsigned long)s->svr.qtls_resume)) return 0;
 989         if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n",
 990                 (unsigned long)s->svr.qipv6)) return 0;
 991         /* flags */
 992         if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n",
 993                 (unsigned long)s->svr.qbit_QR)) return 0;
 994         if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n",
 995                 (unsigned long)s->svr.qbit_AA)) return 0;
 996         if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n",
 997                 (unsigned long)s->svr.qbit_TC)) return 0;
 998         if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n",
 999                 (unsigned long)s->svr.qbit_RD)) return 0;
1000         if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n",
1001                 (unsigned long)s->svr.qbit_RA)) return 0;
1002         if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n",
1003                 (unsigned long)s->svr.qbit_Z)) return 0;
1004         if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n",
1005                 (unsigned long)s->svr.qbit_AD)) return 0;
1006         if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n",
1007                 (unsigned long)s->svr.qbit_CD)) return 0;
1008         if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n",
1009                 (unsigned long)s->svr.qEDNS)) return 0;
1010         if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n",
1011                 (unsigned long)s->svr.qEDNS_DO)) return 0;
1012
1013         /* RCODE */
1014         for(i=0; i<UB_STATS_RCODE_NUM; i++) {
1015                 /* Always include RCODEs 0-5 */
1016                 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
1017                         continue;
1018                 lt = sldns_lookup_by_id(sldns_rcodes, i);
1019                 if(lt && lt->name) {
1020                         snprintf(nm, sizeof(nm), "%s", lt->name);
1021                 } else {
1022                         snprintf(nm, sizeof(nm), "RCODE%d", i);
1023                 }
1024                 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n",
1025                         nm, (unsigned long)s->svr.ans_rcode[i])) return 0;
1026         }
1027         if(!inhibit_zero || s->svr.ans_rcode_nodata) {
1028                 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n",
1029                         (unsigned long)s->svr.ans_rcode_nodata)) return 0;
1030         }
1031         /* iteration */
1032         if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n",
1033                 (unsigned long)s->svr.queries_ratelimited)) return 0;
1034         /* validation */
1035         if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n",
1036                 (unsigned long)s->svr.ans_secure)) return 0;
1037         if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n",
1038                 (unsigned long)s->svr.ans_bogus)) return 0;
1039         if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n",
1040                 (unsigned long)s->svr.rrset_bogus)) return 0;
1041         if(!ssl_printf(ssl, "num.query.aggressive.NOERROR"SQ"%lu\n",
1042                 (unsigned long)s->svr.num_neg_cache_noerror)) return 0;
1043         if(!ssl_printf(ssl, "num.query.aggressive.NXDOMAIN"SQ"%lu\n",
1044                 (unsigned long)s->svr.num_neg_cache_nxdomain)) return 0;
1045         /* threat detection */
1046         if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n",
1047                 (unsigned long)s->svr.unwanted_queries)) return 0;
1048         if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n",
1049                 (unsigned long)s->svr.unwanted_replies)) return 0;
1050         /* cache counts */
1051         if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n",
1052                 (unsigned)s->svr.msg_cache_count)) return 0;
1053         if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n",
1054                 (unsigned)s->svr.rrset_cache_count)) return 0;
1055         if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n",
1056                 (unsigned)s->svr.infra_cache_count)) return 0;
1057         if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n",
1058                 (unsigned)s->svr.key_cache_count)) return 0;
1059         /* applied RPZ actions */
1060         for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
1061                 if(i == RPZ_NO_OVERRIDE_ACTION)
1062                         continue;
1063                 if(inhibit_zero && s->svr.rpz_action[i] == 0)
1064                         continue;
1065                 if(!ssl_printf(ssl, "num.rpz.action.%s"SQ"%lu\n",
1066                         rpz_action_to_string(i),
1067                         (unsigned long)s->svr.rpz_action[i])) return 0;
1068         }
1069 #ifdef USE_DNSCRYPT
1070         if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n",
1071                 (unsigned)s->svr.shared_secret_cache_count)) return 0;
1072         if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n",
1073                 (unsigned)s->svr.nonce_cache_count)) return 0;
1074         if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n",
1075                 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0;
1076         if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n",
1077                 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0;
1078 #endif /* USE_DNSCRYPT */
1079         if(!ssl_printf(ssl, "num.query.authzone.up"SQ"%lu\n",
1080                 (unsigned long)s->svr.num_query_authzone_up)) return 0;
1081         if(!ssl_printf(ssl, "num.query.authzone.down"SQ"%lu\n",
1082                 (unsigned long)s->svr.num_query_authzone_down)) return 0;
1083 #ifdef CLIENT_SUBNET
1084         if(!ssl_printf(ssl, "num.query.subnet"SQ"%lu\n",
1085                 (unsigned long)s->svr.num_query_subnet)) return 0;
1086         if(!ssl_printf(ssl, "num.query.subnet_cache"SQ"%lu\n",
1087                 (unsigned long)s->svr.num_query_subnet_cache)) return 0;
1088 #endif /* CLIENT_SUBNET */
1089         return 1;
1090 }
1091
1092 /** do the stats command */
1093 static void
1094 do_stats(RES* ssl, struct worker* worker, int reset)
1095 {
1096         struct daemon* daemon = worker->daemon;
1097         struct ub_stats_info total;
1098         struct ub_stats_info s;
1099         int i;
1100         memset(&total, 0, sizeof(total));
1101         log_assert(daemon->num > 0);
1102         /* gather all thread statistics in one place */
1103         for(i=0; i<daemon->num; i++) {
1104                 server_stats_obtain(worker, daemon->workers[i], &s, reset);
1105                 if(!print_thread_stats(ssl, i, &s))
1106                         return;
1107                 if(i == 0)
1108                         total = s;
1109                 else    server_stats_add(&total, &s);
1110         }
1111         /* print the thread statistics */
1112         total.mesh_time_median /= (double)daemon->num;
1113         if(!print_stats(ssl, "total", &total))
1114                 return;
1115         if(!print_uptime(ssl, worker, reset))
1116                 return;
1117         if(daemon->cfg->stat_extended) {
1118                 if(!print_mem(ssl, worker, daemon, &total))
1119                         return;
1120                 if(!print_hist(ssl, &total))
1121                         return;
1122                 if(!print_ext(ssl, &total))
1123                         return;
1124         }
1125 }
1126
1127 /** parse commandline argument domain name */
1128 static int
1129 parse_arg_name(RES* ssl, char* str, uint8_t** res, size_t* len, int* labs)
1130 {
1131         uint8_t nm[LDNS_MAX_DOMAINLEN+1];
1132         size_t nmlen = sizeof(nm);
1133         int status;
1134         *res = NULL;
1135         *len = 0;
1136         *labs = 0;
1137         if(str[0] == '\0') {
1138                 ssl_printf(ssl, "error: this option requires a domain name\n");
1139                 return 0;
1140         }
1141         status = sldns_str2wire_dname_buf(str, nm, &nmlen);
1142         if(status != 0) {
1143                 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
1144                         LDNS_WIREPARSE_OFFSET(status),
1145                         sldns_get_errorstr_parse(status));
1146                 return 0;
1147         }
1148         *res = memdup(nm, nmlen);
1149         if(!*res) {
1150                 ssl_printf(ssl, "error out of memory\n");
1151                 return 0;
1152         }
1153         *labs = dname_count_size_labels(*res, len);
1154         return 1;
1155 }
1156
1157 /** find second argument, modifies string */
1158 static int
1159 find_arg2(RES* ssl, char* arg, char** arg2)
1160 {
1161         char* as = strchr(arg, ' ');
1162         char* at = strchr(arg, '\t');
1163         if(as && at) {
1164                 if(at < as)
1165                         as = at;
1166                 as[0]=0;
1167                 *arg2 = skipwhite(as+1);
1168         } else if(as) {
1169                 as[0]=0;
1170                 *arg2 = skipwhite(as+1);
1171         } else if(at) {
1172                 at[0]=0;
1173                 *arg2 = skipwhite(at+1);
1174         } else {
1175                 ssl_printf(ssl, "error could not find next argument "
1176                         "after %s\n", arg);
1177                 return 0;
1178         }
1179         return 1;
1180 }
1181
1182 /** Add a new zone */
1183 static int
1184 perform_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1185 {
1186         uint8_t* nm;
1187         int nmlabs;
1188         size_t nmlen;
1189         char* arg2;
1190         enum localzone_type t;
1191         struct local_zone* z;
1192         if(!find_arg2(ssl, arg, &arg2))
1193                 return 0;
1194         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1195                 return 0;
1196         if(!local_zone_str2type(arg2, &t)) {
1197                 ssl_printf(ssl, "error not a zone type. %s\n", arg2);
1198                 free(nm);
1199                 return 0;
1200         }
1201         lock_rw_wrlock(&zones->lock);
1202         if((z=local_zones_find(zones, nm, nmlen,
1203                 nmlabs, LDNS_RR_CLASS_IN))) {
1204                 /* already present in tree */
1205                 lock_rw_wrlock(&z->lock);
1206                 z->type = t; /* update type anyway */
1207                 lock_rw_unlock(&z->lock);
1208                 free(nm);
1209                 lock_rw_unlock(&zones->lock);
1210                 return 1;
1211         }
1212         if(!local_zones_add_zone(zones, nm, nmlen,
1213                 nmlabs, LDNS_RR_CLASS_IN, t)) {
1214                 lock_rw_unlock(&zones->lock);
1215                 ssl_printf(ssl, "error out of memory\n");
1216                 return 0;
1217         }
1218         lock_rw_unlock(&zones->lock);
1219         return 1;
1220 }
1221
1222 /** Do the local_zone command */
1223 static void
1224 do_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1225 {
1226         if(!perform_zone_add(ssl, zones, arg))
1227                 return;
1228         send_ok(ssl);
1229 }
1230
1231 /** Do the local_zones command */
1232 static void
1233 do_zones_add(RES* ssl, struct local_zones* zones)
1234 {
1235         char buf[2048];
1236         int num = 0;
1237         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1238                 if(buf[0] == 0x04 && buf[1] == 0)
1239                         break; /* end of transmission */
1240                 if(!perform_zone_add(ssl, zones, buf)) {
1241                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1242                                 return;
1243                 }
1244                 else
1245                         num++;
1246         }
1247         (void)ssl_printf(ssl, "added %d zones\n", num);
1248 }
1249
1250 /** Remove a zone */
1251 static int
1252 perform_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1253 {
1254         uint8_t* nm;
1255         int nmlabs;
1256         size_t nmlen;
1257         struct local_zone* z;
1258         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1259                 return 0;
1260         lock_rw_wrlock(&zones->lock);
1261         if((z=local_zones_find(zones, nm, nmlen,
1262                 nmlabs, LDNS_RR_CLASS_IN))) {
1263                 /* present in tree */
1264                 local_zones_del_zone(zones, z);
1265         }
1266         lock_rw_unlock(&zones->lock);
1267         free(nm);
1268         return 1;
1269 }
1270
1271 /** Do the local_zone_remove command */
1272 static void
1273 do_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1274 {
1275         if(!perform_zone_remove(ssl, zones, arg))
1276                 return;
1277         send_ok(ssl);
1278 }
1279
1280 /** Do the local_zones_remove command */
1281 static void
1282 do_zones_remove(RES* ssl, struct local_zones* zones)
1283 {
1284         char buf[2048];
1285         int num = 0;
1286         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1287                 if(buf[0] == 0x04 && buf[1] == 0)
1288                         break; /* end of transmission */
1289                 if(!perform_zone_remove(ssl, zones, buf)) {
1290                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1291                                 return;
1292                 }
1293                 else
1294                         num++;
1295         }
1296         (void)ssl_printf(ssl, "removed %d zones\n", num);
1297 }
1298
1299 /** Add new RR data */
1300 static int
1301 perform_data_add(RES* ssl, struct local_zones* zones, char* arg)
1302 {
1303         if(!local_zones_add_RR(zones, arg)) {
1304                 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
1305                 return 0;
1306         }
1307         return 1;
1308 }
1309
1310 /** Do the local_data command */
1311 static void
1312 do_data_add(RES* ssl, struct local_zones* zones, char* arg)
1313 {
1314         if(!perform_data_add(ssl, zones, arg))
1315                 return;
1316         send_ok(ssl);
1317 }
1318
1319 /** Do the local_datas command */
1320 static void
1321 do_datas_add(RES* ssl, struct local_zones* zones)
1322 {
1323         char buf[2048];
1324         int num = 0;
1325         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1326                 if(buf[0] == 0x04 && buf[1] == 0)
1327                         break; /* end of transmission */
1328                 if(!perform_data_add(ssl, zones, buf)) {
1329                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1330                                 return;
1331                 }
1332                 else
1333                         num++;
1334         }
1335         (void)ssl_printf(ssl, "added %d datas\n", num);
1336 }
1337
1338 /** Remove RR data */
1339 static int
1340 perform_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1341 {
1342         uint8_t* nm;
1343         int nmlabs;
1344         size_t nmlen;
1345         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1346                 return 0;
1347         local_zones_del_data(zones, nm,
1348                 nmlen, nmlabs, LDNS_RR_CLASS_IN);
1349         free(nm);
1350         return 1;
1351 }
1352
1353 /** Do the local_data_remove command */
1354 static void
1355 do_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1356 {
1357         if(!perform_data_remove(ssl, zones, arg))
1358                 return;
1359         send_ok(ssl);
1360 }
1361
1362 /** Do the local_datas_remove command */
1363 static void
1364 do_datas_remove(RES* ssl, struct local_zones* zones)
1365 {
1366         char buf[2048];
1367         int num = 0;
1368         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1369                 if(buf[0] == 0x04 && buf[1] == 0)
1370                         break; /* end of transmission */
1371                 if(!perform_data_remove(ssl, zones, buf)) {
1372                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1373                                 return;
1374                 }
1375                 else
1376                         num++;
1377         }
1378         (void)ssl_printf(ssl, "removed %d datas\n", num);
1379 }
1380
1381 /** Add a new zone to view */
1382 static void
1383 do_view_zone_add(RES* ssl, struct worker* worker, char* arg)
1384 {
1385         char* arg2;
1386         struct view* v;
1387         if(!find_arg2(ssl, arg, &arg2))
1388                 return;
1389         v = views_find_view(worker->daemon->views,
1390                 arg, 1 /* get write lock*/);
1391         if(!v) {
1392                 ssl_printf(ssl,"no view with name: %s\n", arg);
1393                 return;
1394         }
1395         if(!v->local_zones) {
1396                 if(!(v->local_zones = local_zones_create())){
1397                         lock_rw_unlock(&v->lock);
1398                         ssl_printf(ssl,"error out of memory\n");
1399                         return;
1400                 }
1401                 if(!v->isfirst) {
1402                         /* Global local-zone is not used for this view,
1403                          * therefore add defaults to this view-specic
1404                          * local-zone. */
1405                         struct config_file lz_cfg;
1406                         memset(&lz_cfg, 0, sizeof(lz_cfg));
1407                         local_zone_enter_defaults(v->local_zones, &lz_cfg);
1408                 }
1409         }
1410         do_zone_add(ssl, v->local_zones, arg2);
1411         lock_rw_unlock(&v->lock);
1412 }
1413
1414 /** Remove a zone from view */
1415 static void
1416 do_view_zone_remove(RES* ssl, struct worker* worker, char* arg)
1417 {
1418         char* arg2;
1419         struct view* v;
1420         if(!find_arg2(ssl, arg, &arg2))
1421                 return;
1422         v = views_find_view(worker->daemon->views,
1423                 arg, 1 /* get write lock*/);
1424         if(!v) {
1425                 ssl_printf(ssl,"no view with name: %s\n", arg);
1426                 return;
1427         }
1428         if(!v->local_zones) {
1429                 lock_rw_unlock(&v->lock);
1430                 send_ok(ssl);
1431                 return;
1432         }
1433         do_zone_remove(ssl, v->local_zones, arg2);
1434         lock_rw_unlock(&v->lock);
1435 }
1436
1437 /** Add new RR data to view */
1438 static void
1439 do_view_data_add(RES* ssl, struct worker* worker, char* arg)
1440 {
1441         char* arg2;
1442         struct view* v;
1443         if(!find_arg2(ssl, arg, &arg2))
1444                 return;
1445         v = views_find_view(worker->daemon->views,
1446                 arg, 1 /* get write lock*/);
1447         if(!v) {
1448                 ssl_printf(ssl,"no view with name: %s\n", arg);
1449                 return;
1450         }
1451         if(!v->local_zones) {
1452                 if(!(v->local_zones = local_zones_create())){
1453                         lock_rw_unlock(&v->lock);
1454                         ssl_printf(ssl,"error out of memory\n");
1455                         return;
1456                 }
1457         }
1458         do_data_add(ssl, v->local_zones, arg2);
1459         lock_rw_unlock(&v->lock);
1460 }
1461
1462 /** Add new RR data from stdin to view */
1463 static void
1464 do_view_datas_add(RES* ssl, struct worker* worker, char* arg)
1465 {
1466         struct view* v;
1467         v = views_find_view(worker->daemon->views,
1468                 arg, 1 /* get write lock*/);
1469         if(!v) {
1470                 ssl_printf(ssl,"no view with name: %s\n", arg);
1471                 return;
1472         }
1473         if(!v->local_zones) {
1474                 if(!(v->local_zones = local_zones_create())){
1475                         lock_rw_unlock(&v->lock);
1476                         ssl_printf(ssl,"error out of memory\n");
1477                         return;
1478                 }
1479         }
1480         do_datas_add(ssl, v->local_zones);
1481         lock_rw_unlock(&v->lock);
1482 }
1483
1484 /** Remove RR data from view */
1485 static void
1486 do_view_data_remove(RES* ssl, struct worker* worker, char* arg)
1487 {
1488         char* arg2;
1489         struct view* v;
1490         if(!find_arg2(ssl, arg, &arg2))
1491                 return;
1492         v = views_find_view(worker->daemon->views,
1493                 arg, 1 /* get write lock*/);
1494         if(!v) {
1495                 ssl_printf(ssl,"no view with name: %s\n", arg);
1496                 return;
1497         }
1498         if(!v->local_zones) {
1499                 lock_rw_unlock(&v->lock);
1500                 send_ok(ssl);
1501                 return;
1502         }
1503         do_data_remove(ssl, v->local_zones, arg2);
1504         lock_rw_unlock(&v->lock);
1505 }
1506
1507 /** Remove RR data from stdin from view */
1508 static void
1509 do_view_datas_remove(RES* ssl, struct worker* worker, char* arg)
1510 {
1511         struct view* v;
1512         v = views_find_view(worker->daemon->views,
1513                 arg, 1 /* get write lock*/);
1514         if(!v) {
1515                 ssl_printf(ssl,"no view with name: %s\n", arg);
1516                 return;
1517         }
1518         if(!v->local_zones){
1519                 lock_rw_unlock(&v->lock);
1520                 ssl_printf(ssl, "removed 0 datas\n");
1521                 return;
1522         }
1523
1524         do_datas_remove(ssl, v->local_zones);
1525         lock_rw_unlock(&v->lock);
1526 }
1527
1528 /** cache lookup of nameservers */
1529 static void
1530 do_lookup(RES* ssl, struct worker* worker, char* arg)
1531 {
1532         uint8_t* nm;
1533         int nmlabs;
1534         size_t nmlen;
1535         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1536                 return;
1537         (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
1538         free(nm);
1539 }
1540
1541 /** flush something from rrset and msg caches */
1542 static void
1543 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
1544         uint16_t t, uint16_t c)
1545 {
1546         hashvalue_type h;
1547         struct query_info k;
1548         rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
1549         if(t == LDNS_RR_TYPE_SOA)
1550                 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
1551                         PACKED_RRSET_SOA_NEG);
1552         k.qname = nm;
1553         k.qname_len = nmlen;
1554         k.qtype = t;
1555         k.qclass = c;
1556         k.local_alias = NULL;
1557         h = query_info_hash(&k, 0);
1558         slabhash_remove(worker->env.msg_cache, h, &k);
1559         if(t == LDNS_RR_TYPE_AAAA) {
1560                 /* for AAAA also flush dns64 bit_cd packet */
1561                 h = query_info_hash(&k, BIT_CD);
1562                 slabhash_remove(worker->env.msg_cache, h, &k);
1563         }
1564 }
1565
1566 /** flush a type */
1567 static void
1568 do_flush_type(RES* ssl, struct worker* worker, char* arg)
1569 {
1570         uint8_t* nm;
1571         int nmlabs;
1572         size_t nmlen;
1573         char* arg2;
1574         uint16_t t;
1575         if(!find_arg2(ssl, arg, &arg2))
1576                 return;
1577         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1578                 return;
1579         t = sldns_get_rr_type_by_name(arg2);
1580         do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
1581
1582         free(nm);
1583         send_ok(ssl);
1584 }
1585
1586 /** flush statistics */
1587 static void
1588 do_flush_stats(RES* ssl, struct worker* worker)
1589 {
1590         worker_stats_clear(worker);
1591         send_ok(ssl);
1592 }
1593
1594 /**
1595  * Local info for deletion functions
1596  */
1597 struct del_info {
1598         /** worker */
1599         struct worker* worker;
1600         /** name to delete */
1601         uint8_t* name;
1602         /** length */
1603         size_t len;
1604         /** labels */
1605         int labs;
1606         /** time to invalidate to */
1607         time_t expired;
1608         /** number of rrsets removed */
1609         size_t num_rrsets;
1610         /** number of msgs removed */
1611         size_t num_msgs;
1612         /** number of key entries removed */
1613         size_t num_keys;
1614         /** length of addr */
1615         socklen_t addrlen;
1616         /** socket address for host deletion */
1617         struct sockaddr_storage addr;
1618 };
1619
1620 /** callback to delete hosts in infra cache */
1621 static void
1622 infra_del_host(struct lruhash_entry* e, void* arg)
1623 {
1624         /* entry is locked */
1625         struct del_info* inf = (struct del_info*)arg;
1626         struct infra_key* k = (struct infra_key*)e->key;
1627         if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
1628                 struct infra_data* d = (struct infra_data*)e->data;
1629                 d->probedelay = 0;
1630                 d->timeout_A = 0;
1631                 d->timeout_AAAA = 0;
1632                 d->timeout_other = 0;
1633                 rtt_init(&d->rtt);
1634                 if(d->ttl > inf->expired) {
1635                         d->ttl = inf->expired;
1636                         inf->num_keys++;
1637                 }
1638         }
1639 }
1640
1641 /** flush infra cache */
1642 static void
1643 do_flush_infra(RES* ssl, struct worker* worker, char* arg)
1644 {
1645         struct sockaddr_storage addr;
1646         socklen_t len;
1647         struct del_info inf;
1648         if(strcmp(arg, "all") == 0) {
1649                 slabhash_clear(worker->env.infra_cache->hosts);
1650                 send_ok(ssl);
1651                 return;
1652         }
1653         if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
1654                 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
1655                 return;
1656         }
1657         /* delete all entries from cache */
1658         /* what we do is to set them all expired */
1659         inf.worker = worker;
1660         inf.name = 0;
1661         inf.len = 0;
1662         inf.labs = 0;
1663         inf.expired = *worker->env.now;
1664         inf.expired -= 3; /* handle 3 seconds skew between threads */
1665         inf.num_rrsets = 0;
1666         inf.num_msgs = 0;
1667         inf.num_keys = 0;
1668         inf.addrlen = len;
1669         memmove(&inf.addr, &addr, len);
1670         slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
1671                 &inf);
1672         send_ok(ssl);
1673 }
1674
1675 /** flush requestlist */
1676 static void
1677 do_flush_requestlist(RES* ssl, struct worker* worker)
1678 {
1679         mesh_delete_all(worker->env.mesh);
1680         send_ok(ssl);
1681 }
1682
1683 /** callback to delete rrsets in a zone */
1684 static void
1685 zone_del_rrset(struct lruhash_entry* e, void* arg)
1686 {
1687         /* entry is locked */
1688         struct del_info* inf = (struct del_info*)arg;
1689         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1690         if(dname_subdomain_c(k->rk.dname, inf->name)) {
1691                 struct packed_rrset_data* d =
1692                         (struct packed_rrset_data*)e->data;
1693                 if(d->ttl > inf->expired) {
1694                         d->ttl = inf->expired;
1695                         inf->num_rrsets++;
1696                 }
1697         }
1698 }
1699
1700 /** callback to delete messages in a zone */
1701 static void
1702 zone_del_msg(struct lruhash_entry* e, void* arg)
1703 {
1704         /* entry is locked */
1705         struct del_info* inf = (struct del_info*)arg;
1706         struct msgreply_entry* k = (struct msgreply_entry*)e->key;
1707         if(dname_subdomain_c(k->key.qname, inf->name)) {
1708                 struct reply_info* d = (struct reply_info*)e->data;
1709                 if(d->ttl > inf->expired) {
1710                         d->ttl = inf->expired;
1711                         d->prefetch_ttl = inf->expired;
1712                         d->serve_expired_ttl = inf->expired;
1713                         inf->num_msgs++;
1714                 }
1715         }
1716 }
1717
1718 /** callback to delete keys in zone */
1719 static void
1720 zone_del_kcache(struct lruhash_entry* e, void* arg)
1721 {
1722         /* entry is locked */
1723         struct del_info* inf = (struct del_info*)arg;
1724         struct key_entry_key* k = (struct key_entry_key*)e->key;
1725         if(dname_subdomain_c(k->name, inf->name)) {
1726                 struct key_entry_data* d = (struct key_entry_data*)e->data;
1727                 if(d->ttl > inf->expired) {
1728                         d->ttl = inf->expired;
1729                         inf->num_keys++;
1730                 }
1731         }
1732 }
1733
1734 /** remove all rrsets and keys from zone from cache */
1735 static void
1736 do_flush_zone(RES* ssl, struct worker* worker, char* arg)
1737 {
1738         uint8_t* nm;
1739         int nmlabs;
1740         size_t nmlen;
1741         struct del_info inf;
1742         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1743                 return;
1744         /* delete all RRs and key entries from zone */
1745         /* what we do is to set them all expired */
1746         inf.worker = worker;
1747         inf.name = nm;
1748         inf.len = nmlen;
1749         inf.labs = nmlabs;
1750         inf.expired = *worker->env.now;
1751         inf.expired -= 3; /* handle 3 seconds skew between threads */
1752         inf.num_rrsets = 0;
1753         inf.num_msgs = 0;
1754         inf.num_keys = 0;
1755         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1756                 &zone_del_rrset, &inf);
1757
1758         slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
1759
1760         /* and validator cache */
1761         if(worker->env.key_cache) {
1762                 slabhash_traverse(worker->env.key_cache->slab, 1,
1763                         &zone_del_kcache, &inf);
1764         }
1765
1766         free(nm);
1767
1768         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1769                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1770                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1771 }
1772
1773 /** callback to delete bogus rrsets */
1774 static void
1775 bogus_del_rrset(struct lruhash_entry* e, void* arg)
1776 {
1777         /* entry is locked */
1778         struct del_info* inf = (struct del_info*)arg;
1779         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1780         if(d->security == sec_status_bogus) {
1781                 d->ttl = inf->expired;
1782                 inf->num_rrsets++;
1783         }
1784 }
1785
1786 /** callback to delete bogus messages */
1787 static void
1788 bogus_del_msg(struct lruhash_entry* e, void* arg)
1789 {
1790         /* entry is locked */
1791         struct del_info* inf = (struct del_info*)arg;
1792         struct reply_info* d = (struct reply_info*)e->data;
1793         if(d->security == sec_status_bogus) {
1794                 d->ttl = inf->expired;
1795                 inf->num_msgs++;
1796         }
1797 }
1798
1799 /** callback to delete bogus keys */
1800 static void
1801 bogus_del_kcache(struct lruhash_entry* e, void* arg)
1802 {
1803         /* entry is locked */
1804         struct del_info* inf = (struct del_info*)arg;
1805         struct key_entry_data* d = (struct key_entry_data*)e->data;
1806         if(d->isbad) {
1807                 d->ttl = inf->expired;
1808                 inf->num_keys++;
1809         }
1810 }
1811
1812 /** remove all bogus rrsets, msgs and keys from cache */
1813 static void
1814 do_flush_bogus(RES* ssl, struct worker* worker)
1815 {
1816         struct del_info inf;
1817         /* what we do is to set them all expired */
1818         inf.worker = worker;
1819         inf.expired = *worker->env.now;
1820         inf.expired -= 3; /* handle 3 seconds skew between threads */
1821         inf.num_rrsets = 0;
1822         inf.num_msgs = 0;
1823         inf.num_keys = 0;
1824         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1825                 &bogus_del_rrset, &inf);
1826
1827         slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
1828
1829         /* and validator cache */
1830         if(worker->env.key_cache) {
1831                 slabhash_traverse(worker->env.key_cache->slab, 1,
1832                         &bogus_del_kcache, &inf);
1833         }
1834
1835         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1836                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1837                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1838 }
1839
1840 /** callback to delete negative and servfail rrsets */
1841 static void
1842 negative_del_rrset(struct lruhash_entry* e, void* arg)
1843 {
1844         /* entry is locked */
1845         struct del_info* inf = (struct del_info*)arg;
1846         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1847         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1848         /* delete the parentside negative cache rrsets,
1849          * these are nameserver rrsets that failed lookup, rdata empty */
1850         if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 &&
1851                 d->rrsig_count == 0 && d->rr_len[0] == 0) {
1852                 d->ttl = inf->expired;
1853                 inf->num_rrsets++;
1854         }
1855 }
1856
1857 /** callback to delete negative and servfail messages */
1858 static void
1859 negative_del_msg(struct lruhash_entry* e, void* arg)
1860 {
1861         /* entry is locked */
1862         struct del_info* inf = (struct del_info*)arg;
1863         struct reply_info* d = (struct reply_info*)e->data;
1864         /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error
1865          * or NOERROR rcode with ANCOUNT==0: a NODATA answer */
1866         if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) {
1867                 d->ttl = inf->expired;
1868                 inf->num_msgs++;
1869         }
1870 }
1871
1872 /** callback to delete negative key entries */
1873 static void
1874 negative_del_kcache(struct lruhash_entry* e, void* arg)
1875 {
1876         /* entry is locked */
1877         struct del_info* inf = (struct del_info*)arg;
1878         struct key_entry_data* d = (struct key_entry_data*)e->data;
1879         /* could be bad because of lookup failure on the DS, DNSKEY, which
1880          * was nxdomain or servfail, and thus a result of negative lookups */
1881         if(d->isbad) {
1882                 d->ttl = inf->expired;
1883                 inf->num_keys++;
1884         }
1885 }
1886
1887 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */
1888 static void
1889 do_flush_negative(RES* ssl, struct worker* worker)
1890 {
1891         struct del_info inf;
1892         /* what we do is to set them all expired */
1893         inf.worker = worker;
1894         inf.expired = *worker->env.now;
1895         inf.expired -= 3; /* handle 3 seconds skew between threads */
1896         inf.num_rrsets = 0;
1897         inf.num_msgs = 0;
1898         inf.num_keys = 0;
1899         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1900                 &negative_del_rrset, &inf);
1901
1902         slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf);
1903
1904         /* and validator cache */
1905         if(worker->env.key_cache) {
1906                 slabhash_traverse(worker->env.key_cache->slab, 1,
1907                         &negative_del_kcache, &inf);
1908         }
1909
1910         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1911                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1912                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1913 }
1914
1915 /** remove name rrset from cache */
1916 static void
1917 do_flush_name(RES* ssl, struct worker* w, char* arg)
1918 {
1919         uint8_t* nm;
1920         int nmlabs;
1921         size_t nmlen;
1922         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1923                 return;
1924         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
1925         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
1926         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
1927         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
1928         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
1929         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
1930         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
1931         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
1932         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
1933         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
1934
1935         free(nm);
1936         send_ok(ssl);
1937 }
1938
1939 /** printout a delegation point info */
1940 static int
1941 ssl_print_name_dp(RES* ssl, const char* str, uint8_t* nm, uint16_t dclass,
1942         struct delegpt* dp)
1943 {
1944         char buf[257];
1945         struct delegpt_ns* ns;
1946         struct delegpt_addr* a;
1947         int f = 0;
1948         if(str) { /* print header for forward, stub */
1949                 char* c = sldns_wire2str_class(dclass);
1950                 dname_str(nm, buf);
1951                 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) {
1952                         free(c);
1953                         return 0;
1954                 }
1955                 free(c);
1956         }
1957         for(ns = dp->nslist; ns; ns = ns->next) {
1958                 dname_str(ns->name, buf);
1959                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1960                         return 0;
1961                 f = 1;
1962         }
1963         for(a = dp->target_list; a; a = a->next_target) {
1964                 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
1965                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1966                         return 0;
1967                 f = 1;
1968         }
1969         return ssl_printf(ssl, "\n");
1970 }
1971
1972
1973 /** print root forwards */
1974 static int
1975 print_root_fwds(RES* ssl, struct iter_forwards* fwds, uint8_t* root)
1976 {
1977         struct delegpt* dp;
1978         dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
1979         if(!dp)
1980                 return ssl_printf(ssl, "off (using root hints)\n");
1981         /* if dp is returned it must be the root */
1982         log_assert(query_dname_compare(dp->name, root)==0);
1983         return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
1984 }
1985
1986 /** parse args into delegpt */
1987 static struct delegpt*
1988 parse_delegpt(RES* ssl, char* args, uint8_t* nm, int allow_names)
1989 {
1990         /* parse args and add in */
1991         char* p = args;
1992         char* todo;
1993         struct delegpt* dp = delegpt_create_mlc(nm);
1994         struct sockaddr_storage addr;
1995         socklen_t addrlen;
1996         char* auth_name;
1997         if(!dp) {
1998                 (void)ssl_printf(ssl, "error out of memory\n");
1999                 return NULL;
2000         }
2001         while(p) {
2002                 todo = p;
2003                 p = strchr(p, ' '); /* find next spot, if any */
2004                 if(p) {
2005                         *p++ = 0;       /* end this spot */
2006                         p = skipwhite(p); /* position at next spot */
2007                 }
2008                 /* parse address */
2009                 if(!authextstrtoaddr(todo, &addr, &addrlen, &auth_name)) {
2010                         if(allow_names) {
2011                                 uint8_t* n = NULL;
2012                                 size_t ln;
2013                                 int lb;
2014                                 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) {
2015                                         (void)ssl_printf(ssl, "error cannot "
2016                                                 "parse IP address or name "
2017                                                 "'%s'\n", todo);
2018                                         delegpt_free_mlc(dp);
2019                                         return NULL;
2020                                 }
2021                                 if(!delegpt_add_ns_mlc(dp, n, 0)) {
2022                                         (void)ssl_printf(ssl, "error out of memory\n");
2023                                         free(n);
2024                                         delegpt_free_mlc(dp);
2025                                         return NULL;
2026                                 }
2027                                 free(n);
2028
2029                         } else {
2030                                 (void)ssl_printf(ssl, "error cannot parse"
2031                                         " IP address '%s'\n", todo);
2032                                 delegpt_free_mlc(dp);
2033                                 return NULL;
2034                         }
2035                 } else {
2036 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST)
2037                         if(auth_name)
2038                           log_err("no name verification functionality in "
2039                                 "ssl library, ignored name for %s", todo);
2040 #endif
2041                         /* add address */
2042                         if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0,
2043                                 auth_name)) {
2044                                 (void)ssl_printf(ssl, "error out of memory\n");
2045                                 delegpt_free_mlc(dp);
2046                                 return NULL;
2047                         }
2048                 }
2049         }
2050         dp->has_parent_side_NS = 1;
2051         return dp;
2052 }
2053
2054 /** do the status command */
2055 static void
2056 do_forward(RES* ssl, struct worker* worker, char* args)
2057 {
2058         struct iter_forwards* fwd = worker->env.fwds;
2059         uint8_t* root = (uint8_t*)"\000";
2060         if(!fwd) {
2061                 (void)ssl_printf(ssl, "error: structure not allocated\n");
2062                 return;
2063         }
2064         if(args == NULL || args[0] == 0) {
2065                 (void)print_root_fwds(ssl, fwd, root);
2066                 return;
2067         }
2068         /* set root forwards for this thread. since we are in remote control
2069          * the actual mesh is not running, so we can freely edit it. */
2070         /* delete all the existing queries first */
2071         mesh_delete_all(worker->env.mesh);
2072         if(strcmp(args, "off") == 0) {
2073                 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
2074         } else {
2075                 struct delegpt* dp;
2076                 if(!(dp = parse_delegpt(ssl, args, root, 0)))
2077                         return;
2078                 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2079                         (void)ssl_printf(ssl, "error out of memory\n");
2080                         return;
2081                 }
2082         }
2083         send_ok(ssl);
2084 }
2085
2086 static int
2087 parse_fs_args(RES* ssl, char* args, uint8_t** nm, struct delegpt** dp,
2088         int* insecure, int* prime)
2089 {
2090         char* zonename;
2091         char* rest;
2092         size_t nmlen;
2093         int nmlabs;
2094         /* parse all -x args */
2095         while(args[0] == '+') {
2096                 if(!find_arg2(ssl, args, &rest))
2097                         return 0;
2098                 while(*(++args) != 0) {
2099                         if(*args == 'i' && insecure)
2100                                 *insecure = 1;
2101                         else if(*args == 'p' && prime)
2102                                 *prime = 1;
2103                         else {
2104                                 (void)ssl_printf(ssl, "error: unknown option %s\n", args);
2105                                 return 0;
2106                         }
2107                 }
2108                 args = rest;
2109         }
2110         /* parse name */
2111         if(dp) {
2112                 if(!find_arg2(ssl, args, &rest))
2113                         return 0;
2114                 zonename = args;
2115                 args = rest;
2116         } else  zonename = args;
2117         if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
2118                 return 0;
2119
2120         /* parse dp */
2121         if(dp) {
2122                 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) {
2123                         free(*nm);
2124                         return 0;
2125                 }
2126         }
2127         return 1;
2128 }
2129
2130 /** do the forward_add command */
2131 static void
2132 do_forward_add(RES* ssl, struct worker* worker, char* args)
2133 {
2134         struct iter_forwards* fwd = worker->env.fwds;
2135         int insecure = 0;
2136         uint8_t* nm = NULL;
2137         struct delegpt* dp = NULL;
2138         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
2139                 return;
2140         if(insecure && worker->env.anchors) {
2141                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2142                         nm)) {
2143                         (void)ssl_printf(ssl, "error out of memory\n");
2144                         delegpt_free_mlc(dp);
2145                         free(nm);
2146                         return;
2147                 }
2148         }
2149         if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2150                 (void)ssl_printf(ssl, "error out of memory\n");
2151                 free(nm);
2152                 return;
2153         }
2154         free(nm);
2155         send_ok(ssl);
2156 }
2157
2158 /** do the forward_remove command */
2159 static void
2160 do_forward_remove(RES* ssl, struct worker* worker, char* args)
2161 {
2162         struct iter_forwards* fwd = worker->env.fwds;
2163         int insecure = 0;
2164         uint8_t* nm = NULL;
2165         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2166                 return;
2167         if(insecure && worker->env.anchors)
2168                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2169                         nm);
2170         forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
2171         free(nm);
2172         send_ok(ssl);
2173 }
2174
2175 /** do the stub_add command */
2176 static void
2177 do_stub_add(RES* ssl, struct worker* worker, char* args)
2178 {
2179         struct iter_forwards* fwd = worker->env.fwds;
2180         int insecure = 0, prime = 0;
2181         uint8_t* nm = NULL;
2182         struct delegpt* dp = NULL;
2183         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
2184                 return;
2185         if(insecure && worker->env.anchors) {
2186                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2187                         nm)) {
2188                         (void)ssl_printf(ssl, "error out of memory\n");
2189                         delegpt_free_mlc(dp);
2190                         free(nm);
2191                         return;
2192                 }
2193         }
2194         if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
2195                 if(insecure && worker->env.anchors)
2196                         anchors_delete_insecure(worker->env.anchors,
2197                                 LDNS_RR_CLASS_IN, nm);
2198                 (void)ssl_printf(ssl, "error out of memory\n");
2199                 delegpt_free_mlc(dp);
2200                 free(nm);
2201                 return;
2202         }
2203         if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
2204                 (void)ssl_printf(ssl, "error out of memory\n");
2205                 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2206                 if(insecure && worker->env.anchors)
2207                         anchors_delete_insecure(worker->env.anchors,
2208                                 LDNS_RR_CLASS_IN, nm);
2209                 free(nm);
2210                 return;
2211         }
2212         free(nm);
2213         send_ok(ssl);
2214 }
2215
2216 /** do the stub_remove command */
2217 static void
2218 do_stub_remove(RES* ssl, struct worker* worker, char* args)
2219 {
2220         struct iter_forwards* fwd = worker->env.fwds;
2221         int insecure = 0;
2222         uint8_t* nm = NULL;
2223         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2224                 return;
2225         if(insecure && worker->env.anchors)
2226                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2227                         nm);
2228         forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2229         hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
2230         free(nm);
2231         send_ok(ssl);
2232 }
2233
2234 /** do the insecure_add command */
2235 static void
2236 do_insecure_add(RES* ssl, struct worker* worker, char* arg)
2237 {
2238         size_t nmlen;
2239         int nmlabs;
2240         uint8_t* nm = NULL;
2241         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2242                 return;
2243         if(worker->env.anchors) {
2244                 if(!anchors_add_insecure(worker->env.anchors,
2245                         LDNS_RR_CLASS_IN, nm)) {
2246                         (void)ssl_printf(ssl, "error out of memory\n");
2247                         free(nm);
2248                         return;
2249                 }
2250         }
2251         free(nm);
2252         send_ok(ssl);
2253 }
2254
2255 /** do the insecure_remove command */
2256 static void
2257 do_insecure_remove(RES* ssl, struct worker* worker, char* arg)
2258 {
2259         size_t nmlen;
2260         int nmlabs;
2261         uint8_t* nm = NULL;
2262         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2263                 return;
2264         if(worker->env.anchors)
2265                 anchors_delete_insecure(worker->env.anchors,
2266                         LDNS_RR_CLASS_IN, nm);
2267         free(nm);
2268         send_ok(ssl);
2269 }
2270
2271 static void
2272 do_insecure_list(RES* ssl, struct worker* worker)
2273 {
2274         char buf[257];
2275         struct trust_anchor* a;
2276         if(worker->env.anchors) {
2277                 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) {
2278                         if(a->numDS == 0 && a->numDNSKEY == 0) {
2279                                 dname_str(a->name, buf);
2280                                 ssl_printf(ssl, "%s\n", buf);
2281                         }
2282                 }
2283         }
2284 }
2285
2286 /** do the status command */
2287 static void
2288 do_status(RES* ssl, struct worker* worker)
2289 {
2290         int i;
2291         time_t uptime;
2292         if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
2293                 return;
2294         if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
2295                 return;
2296         if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
2297                 return;
2298         if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
2299                 return;
2300         for(i=0; i<worker->daemon->mods.num; i++) {
2301                 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
2302                         return;
2303         }
2304         if(!ssl_printf(ssl, " ]\n"))
2305                 return;
2306         uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
2307         if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
2308                 return;
2309         if(!ssl_printf(ssl, "options:%s%s%s%s\n" ,
2310                 (worker->daemon->reuseport?" reuseport":""),
2311                 (worker->daemon->rc->accept_list?" control":""),
2312                 (worker->daemon->rc->accept_list && worker->daemon->rc->use_cert?"(ssl)":""),
2313                 (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)":"")
2314                 ))
2315                 return;
2316         if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
2317                 (int)getpid()))
2318                 return;
2319 }
2320
2321 /** get age for the mesh state */
2322 static void
2323 get_mesh_age(struct mesh_state* m, char* buf, size_t len,
2324         struct module_env* env)
2325 {
2326         if(m->reply_list) {
2327                 struct timeval d;
2328                 struct mesh_reply* r = m->reply_list;
2329                 /* last reply is the oldest */
2330                 while(r && r->next)
2331                         r = r->next;
2332                 timeval_subtract(&d, env->now_tv, &r->start_time);
2333                 snprintf(buf, len, ARG_LL "d.%6.6d",
2334                         (long long)d.tv_sec, (int)d.tv_usec);
2335         } else {
2336                 snprintf(buf, len, "-");
2337         }
2338 }
2339
2340 /** get status of a mesh state */
2341 static void
2342 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m,
2343         char* buf, size_t len)
2344 {
2345         enum module_ext_state s = m->s.ext_state[m->s.curmod];
2346         const char *modname = mesh->mods.mod[m->s.curmod]->name;
2347         size_t l;
2348         if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
2349                 m->s.minfo[m->s.curmod]) {
2350                 /* break into iterator to find out who its waiting for */
2351                 struct iter_qstate* qstate = (struct iter_qstate*)
2352                         m->s.minfo[m->s.curmod];
2353                 struct outbound_list* ol = &qstate->outlist;
2354                 struct outbound_entry* e;
2355                 snprintf(buf, len, "%s wait for", modname);
2356                 l = strlen(buf);
2357                 buf += l; len -= l;
2358                 if(ol->first == NULL)
2359                         snprintf(buf, len, " (empty_list)");
2360                 for(e = ol->first; e; e = e->next) {
2361                         snprintf(buf, len, " ");
2362                         l = strlen(buf);
2363                         buf += l; len -= l;
2364                         addr_to_str(&e->qsent->addr, e->qsent->addrlen,
2365                                 buf, len);
2366                         l = strlen(buf);
2367                         buf += l; len -= l;
2368                 }
2369         } else if(s == module_wait_subquery) {
2370                 /* look in subs from mesh state to see what */
2371                 char nm[257];
2372                 struct mesh_state_ref* sub;
2373                 snprintf(buf, len, "%s wants", modname);
2374                 l = strlen(buf);
2375                 buf += l; len -= l;
2376                 if(m->sub_set.count == 0)
2377                         snprintf(buf, len, " (empty_list)");
2378                 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
2379                         char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
2380                         char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
2381                         dname_str(sub->s->s.qinfo.qname, nm);
2382                         snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
2383                                 (c?c:"CLASS??"), nm);
2384                         l = strlen(buf);
2385                         buf += l; len -= l;
2386                         free(t);
2387                         free(c);
2388                 }
2389         } else {
2390                 snprintf(buf, len, "%s is %s", modname, strextstate(s));
2391         }
2392 }
2393
2394 /** do the dump_requestlist command */
2395 static void
2396 do_dump_requestlist(RES* ssl, struct worker* worker)
2397 {
2398         struct mesh_area* mesh;
2399         struct mesh_state* m;
2400         int num = 0;
2401         char buf[257];
2402         char timebuf[32];
2403         char statbuf[10240];
2404         if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
2405                 return;
2406         if(!ssl_printf(ssl, "#   type cl name    seconds    module status\n"))
2407                 return;
2408         /* show worker mesh contents */
2409         mesh = worker->env.mesh;
2410         if(!mesh) return;
2411         RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
2412                 char* t = sldns_wire2str_type(m->s.qinfo.qtype);
2413                 char* c = sldns_wire2str_class(m->s.qinfo.qclass);
2414                 dname_str(m->s.qinfo.qname, buf);
2415                 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
2416                 get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
2417                 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n",
2418                         num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
2419                         statbuf)) {
2420                         free(t);
2421                         free(c);
2422                         return;
2423                 }
2424                 num++;
2425                 free(t);
2426                 free(c);
2427         }
2428 }
2429
2430 /** structure for argument data for dump infra host */
2431 struct infra_arg {
2432         /** the infra cache */
2433         struct infra_cache* infra;
2434         /** the SSL connection */
2435         RES* ssl;
2436         /** the time now */
2437         time_t now;
2438         /** ssl failure? stop writing and skip the rest.  If the tcp
2439          * connection is broken, and writes fail, we then stop writing. */
2440         int ssl_failed;
2441 };
2442
2443 /** callback for every host element in the infra cache */
2444 static void
2445 dump_infra_host(struct lruhash_entry* e, void* arg)
2446 {
2447         struct infra_arg* a = (struct infra_arg*)arg;
2448         struct infra_key* k = (struct infra_key*)e->key;
2449         struct infra_data* d = (struct infra_data*)e->data;
2450         char ip_str[1024];
2451         char name[257];
2452         int port;
2453         if(a->ssl_failed)
2454                 return;
2455         addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
2456         dname_str(k->zonename, name);
2457         port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port);
2458         if(port != UNBOUND_DNS_PORT) {
2459                 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str),
2460                         "@%d", port);
2461         }
2462         /* skip expired stuff (only backed off) */
2463         if(d->ttl < a->now) {
2464                 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
2465                         if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
2466                                 name, d->rtt.rto))  {
2467                                 a->ssl_failed = 1;
2468                                 return;
2469                         }
2470                 }
2471                 return;
2472         }
2473         if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d "
2474                 "tA %d tAAAA %d tother %d "
2475                 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
2476                 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now),
2477                 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
2478                 d->timeout_A, d->timeout_AAAA, d->timeout_other,
2479                 (int)d->edns_lame_known, (int)d->edns_version,
2480                 (int)(a->now<d->probedelay?(d->probedelay - a->now):0),
2481                 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
2482                 (int)d->lame_other)) {
2483                 a->ssl_failed = 1;
2484                 return;
2485         }
2486 }
2487
2488 /** do the dump_infra command */
2489 static void
2490 do_dump_infra(RES* ssl, struct worker* worker)
2491 {
2492         struct infra_arg arg;
2493         arg.infra = worker->env.infra_cache;
2494         arg.ssl = ssl;
2495         arg.now = *worker->env.now;
2496         arg.ssl_failed = 0;
2497         slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
2498 }
2499
2500 /** do the log_reopen command */
2501 static void
2502 do_log_reopen(RES* ssl, struct worker* worker)
2503 {
2504         struct config_file* cfg = worker->env.cfg;
2505         send_ok(ssl);
2506         log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
2507 }
2508
2509 /** do the auth_zone_reload command */
2510 static void
2511 do_auth_zone_reload(RES* ssl, struct worker* worker, char* arg)
2512 {
2513         size_t nmlen;
2514         int nmlabs;
2515         uint8_t* nm = NULL;
2516         struct auth_zones* az = worker->env.auth_zones;
2517         struct auth_zone* z = NULL;
2518         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2519                 return;
2520         if(az) {
2521                 lock_rw_rdlock(&az->lock);
2522                 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2523                 if(z) {
2524                         lock_rw_wrlock(&z->lock);
2525                 }
2526                 lock_rw_unlock(&az->lock);
2527         }
2528         free(nm);
2529         if(!z) {
2530                 (void)ssl_printf(ssl, "error no auth-zone %s\n", arg);
2531                 return;
2532         }
2533         if(!auth_zone_read_zonefile(z, worker->env.cfg)) {
2534                 lock_rw_unlock(&z->lock);
2535                 (void)ssl_printf(ssl, "error failed to read %s\n", arg);
2536                 return;
2537         }
2538         lock_rw_unlock(&z->lock);
2539         send_ok(ssl);
2540 }
2541
2542 /** do the auth_zone_transfer command */
2543 static void
2544 do_auth_zone_transfer(RES* ssl, struct worker* worker, char* arg)
2545 {
2546         size_t nmlen;
2547         int nmlabs;
2548         uint8_t* nm = NULL;
2549         struct auth_zones* az = worker->env.auth_zones;
2550         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2551                 return;
2552         if(!az || !auth_zones_startprobesequence(az, &worker->env, nm, nmlen,
2553                 LDNS_RR_CLASS_IN)) {
2554                 (void)ssl_printf(ssl, "error zone xfr task not found %s\n", arg);
2555                 free(nm);
2556                 return;
2557         }
2558         free(nm);
2559         send_ok(ssl);
2560 }
2561
2562 /** do the set_option command */
2563 static void
2564 do_set_option(RES* ssl, struct worker* worker, char* arg)
2565 {
2566         char* arg2;
2567         if(!find_arg2(ssl, arg, &arg2))
2568                 return;
2569         if(!config_set_option(worker->env.cfg, arg, arg2)) {
2570                 (void)ssl_printf(ssl, "error setting option\n");
2571                 return;
2572         }
2573         /* effectuate some arguments */
2574         if(strcmp(arg, "val-override-date:") == 0) {
2575                 int m = modstack_find(&worker->env.mesh->mods, "validator");
2576                 struct val_env* val_env = NULL;
2577                 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m];
2578                 if(val_env)
2579                         val_env->date_override = worker->env.cfg->val_date_override;
2580         }
2581         send_ok(ssl);
2582 }
2583
2584 /* routine to printout option values over SSL */
2585 void remote_get_opt_ssl(char* line, void* arg)
2586 {
2587         RES* ssl = (RES*)arg;
2588         (void)ssl_printf(ssl, "%s\n", line);
2589 }
2590
2591 /** do the get_option command */
2592 static void
2593 do_get_option(RES* ssl, struct worker* worker, char* arg)
2594 {
2595         int r;
2596         r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
2597         if(!r) {
2598                 (void)ssl_printf(ssl, "error unknown option\n");
2599                 return;
2600         }
2601 }
2602
2603 /** do the list_forwards command */
2604 static void
2605 do_list_forwards(RES* ssl, struct worker* worker)
2606 {
2607         /* since its a per-worker structure no locks needed */
2608         struct iter_forwards* fwds = worker->env.fwds;
2609         struct iter_forward_zone* z;
2610         struct trust_anchor* a;
2611         int insecure;
2612         RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
2613                 if(!z->dp) continue; /* skip empty marker for stub */
2614
2615                 /* see if it is insecure */
2616                 insecure = 0;
2617                 if(worker->env.anchors &&
2618                         (a=anchor_find(worker->env.anchors, z->name,
2619                         z->namelabs, z->namelen,  z->dclass))) {
2620                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2621                                 insecure = 1;
2622                         lock_basic_unlock(&a->lock);
2623                 }
2624
2625                 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"),
2626                         z->name, z->dclass, z->dp))
2627                         return;
2628         }
2629 }
2630
2631 /** do the list_stubs command */
2632 static void
2633 do_list_stubs(RES* ssl, struct worker* worker)
2634 {
2635         struct iter_hints_stub* z;
2636         struct trust_anchor* a;
2637         int insecure;
2638         char str[32];
2639         RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
2640
2641                 /* see if it is insecure */
2642                 insecure = 0;
2643                 if(worker->env.anchors &&
2644                         (a=anchor_find(worker->env.anchors, z->node.name,
2645                         z->node.labs, z->node.len,  z->node.dclass))) {
2646                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2647                                 insecure = 1;
2648                         lock_basic_unlock(&a->lock);
2649                 }
2650
2651                 snprintf(str, sizeof(str), "stub %sprime%s",
2652                         (z->noprime?"no":""), (insecure?" +i":""));
2653                 if(!ssl_print_name_dp(ssl, str, z->node.name,
2654                         z->node.dclass, z->dp))
2655                         return;
2656         }
2657 }
2658
2659 /** do the list_auth_zones command */
2660 static void
2661 do_list_auth_zones(RES* ssl, struct auth_zones* az)
2662 {
2663         struct auth_zone* z;
2664         char buf[257], buf2[256];
2665         lock_rw_rdlock(&az->lock);
2666         RBTREE_FOR(z, struct auth_zone*, &az->ztree) {
2667                 lock_rw_rdlock(&z->lock);
2668                 dname_str(z->name, buf);
2669                 if(z->zone_expired)
2670                         snprintf(buf2, sizeof(buf2), "expired");
2671                 else {
2672                         uint32_t serial = 0;
2673                         if(auth_zone_get_serial(z, &serial))
2674                                 snprintf(buf2, sizeof(buf2), "serial %u",
2675                                         (unsigned)serial);
2676                         else    snprintf(buf2, sizeof(buf2), "no serial");
2677                 }
2678                 if(!ssl_printf(ssl, "%s\t%s\n", buf, buf2)) {
2679                         /* failure to print */
2680                         lock_rw_unlock(&z->lock);
2681                         lock_rw_unlock(&az->lock);
2682                         return;
2683                 }
2684                 lock_rw_unlock(&z->lock);
2685         }
2686         lock_rw_unlock(&az->lock);
2687 }
2688
2689 /** do the list_local_zones command */
2690 static void
2691 do_list_local_zones(RES* ssl, struct local_zones* zones)
2692 {
2693         struct local_zone* z;
2694         char buf[257];
2695         lock_rw_rdlock(&zones->lock);
2696         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2697                 lock_rw_rdlock(&z->lock);
2698                 dname_str(z->name, buf);
2699                 if(!ssl_printf(ssl, "%s %s\n", buf,
2700                         local_zone_type2str(z->type))) {
2701                         /* failure to print */
2702                         lock_rw_unlock(&z->lock);
2703                         lock_rw_unlock(&zones->lock);
2704                         return;
2705                 }
2706                 lock_rw_unlock(&z->lock);
2707         }
2708         lock_rw_unlock(&zones->lock);
2709 }
2710
2711 /** do the list_local_data command */
2712 static void
2713 do_list_local_data(RES* ssl, struct worker* worker, struct local_zones* zones)
2714 {
2715         struct local_zone* z;
2716         struct local_data* d;
2717         struct local_rrset* p;
2718         char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
2719         size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
2720         lock_rw_rdlock(&zones->lock);
2721         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2722                 lock_rw_rdlock(&z->lock);
2723                 RBTREE_FOR(d, struct local_data*, &z->data) {
2724                         for(p = d->rrsets; p; p = p->next) {
2725                                 struct packed_rrset_data* d =
2726                                         (struct packed_rrset_data*)p->rrset->entry.data;
2727                                 size_t i;
2728                                 for(i=0; i<d->count + d->rrsig_count; i++) {
2729                                         if(!packed_rr_to_string(p->rrset, i,
2730                                                 0, s, slen)) {
2731                                                 if(!ssl_printf(ssl, "BADRR\n")) {
2732                                                         lock_rw_unlock(&z->lock);
2733                                                         lock_rw_unlock(&zones->lock);
2734                                                         return;
2735                                                 }
2736                                         }
2737                                         if(!ssl_printf(ssl, "%s\n", s)) {
2738                                                 lock_rw_unlock(&z->lock);
2739                                                 lock_rw_unlock(&zones->lock);
2740                                                 return;
2741                                         }
2742                                 }
2743                         }
2744                 }
2745                 lock_rw_unlock(&z->lock);
2746         }
2747         lock_rw_unlock(&zones->lock);
2748 }
2749
2750 /** do the view_list_local_zones command */
2751 static void
2752 do_view_list_local_zones(RES* ssl, struct worker* worker, char* arg)
2753 {
2754         struct view* v = views_find_view(worker->daemon->views,
2755                 arg, 0 /* get read lock*/);
2756         if(!v) {
2757                 ssl_printf(ssl,"no view with name: %s\n", arg);
2758                 return;
2759         }
2760         if(v->local_zones) {
2761                 do_list_local_zones(ssl, v->local_zones);
2762         }
2763         lock_rw_unlock(&v->lock);
2764 }
2765
2766 /** do the view_list_local_data command */
2767 static void
2768 do_view_list_local_data(RES* ssl, struct worker* worker, char* arg)
2769 {
2770         struct view* v = views_find_view(worker->daemon->views,
2771                 arg, 0 /* get read lock*/);
2772         if(!v) {
2773                 ssl_printf(ssl,"no view with name: %s\n", arg);
2774                 return;
2775         }
2776         if(v->local_zones) {
2777                 do_list_local_data(ssl, worker, v->local_zones);
2778         }
2779         lock_rw_unlock(&v->lock);
2780 }
2781
2782 /** struct for user arg ratelimit list */
2783 struct ratelimit_list_arg {
2784         /** the infra cache */
2785         struct infra_cache* infra;
2786         /** the SSL to print to */
2787         RES* ssl;
2788         /** all or only ratelimited */
2789         int all;
2790         /** current time */
2791         time_t now;
2792 };
2793
2794 #define ip_ratelimit_list_arg ratelimit_list_arg
2795
2796 /** list items in the ratelimit table */
2797 static void
2798 rate_list(struct lruhash_entry* e, void* arg)
2799 {
2800         struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg;
2801         struct rate_key* k = (struct rate_key*)e->key;
2802         struct rate_data* d = (struct rate_data*)e->data;
2803         char buf[257];
2804         int lim = infra_find_ratelimit(a->infra, k->name, k->namelen);
2805         int max = infra_rate_max(d, a->now);
2806         if(a->all == 0) {
2807                 if(max < lim)
2808                         return;
2809         }
2810         dname_str(k->name, buf);
2811         ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim);
2812 }
2813
2814 /** list items in the ip_ratelimit table */
2815 static void
2816 ip_rate_list(struct lruhash_entry* e, void* arg)
2817 {
2818         char ip[128];
2819         struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg;
2820         struct ip_rate_key* k = (struct ip_rate_key*)e->key;
2821         struct ip_rate_data* d = (struct ip_rate_data*)e->data;
2822         int lim = infra_ip_ratelimit;
2823         int max = infra_rate_max(d, a->now);
2824         if(a->all == 0) {
2825                 if(max < lim)
2826                         return;
2827         }
2828         addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip));
2829         ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim);
2830 }
2831
2832 /** do the ratelimit_list command */
2833 static void
2834 do_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2835 {
2836         struct ratelimit_list_arg a;
2837         a.all = 0;
2838         a.infra = worker->env.infra_cache;
2839         a.now = *worker->env.now;
2840         a.ssl = ssl;
2841         arg = skipwhite(arg);
2842         if(strcmp(arg, "+a") == 0)
2843                 a.all = 1;
2844         if(a.infra->domain_rates==NULL ||
2845                 (a.all == 0 && infra_dp_ratelimit == 0))
2846                 return;
2847         slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a);
2848 }
2849
2850 /** do the ip_ratelimit_list command */
2851 static void
2852 do_ip_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2853 {
2854         struct ip_ratelimit_list_arg a;
2855         a.all = 0;
2856         a.infra = worker->env.infra_cache;
2857         a.now = *worker->env.now;
2858         a.ssl = ssl;
2859         arg = skipwhite(arg);
2860         if(strcmp(arg, "+a") == 0)
2861                 a.all = 1;
2862         if(a.infra->client_ip_rates==NULL ||
2863                 (a.all == 0 && infra_ip_ratelimit == 0))
2864                 return;
2865         slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a);
2866 }
2867
2868 /** tell other processes to execute the command */
2869 static void
2870 distribute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd)
2871 {
2872         int i;
2873         if(!cmd || !ssl)
2874                 return;
2875         /* skip i=0 which is me */
2876         for(i=1; i<rc->worker->daemon->num; i++) {
2877                 worker_send_cmd(rc->worker->daemon->workers[i],
2878                         worker_cmd_remote);
2879                 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
2880                         (uint8_t*)cmd, strlen(cmd)+1, 0)) {
2881                         ssl_printf(ssl, "error could not distribute cmd\n");
2882                         return;
2883                 }
2884         }
2885 }
2886
2887 /** check for name with end-of-string, space or tab after it */
2888 static int
2889 cmdcmp(char* p, const char* cmd, size_t len)
2890 {
2891         return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
2892 }
2893
2894 /** execute a remote control command */
2895 static void
2896 execute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd,
2897         struct worker* worker)
2898 {
2899         char* p = skipwhite(cmd);
2900         /* compare command */
2901         if(cmdcmp(p, "stop", 4)) {
2902                 do_stop(ssl, worker);
2903                 return;
2904         } else if(cmdcmp(p, "reload", 6)) {
2905                 do_reload(ssl, worker);
2906                 return;
2907         } else if(cmdcmp(p, "stats_noreset", 13)) {
2908                 do_stats(ssl, worker, 0);
2909                 return;
2910         } else if(cmdcmp(p, "stats", 5)) {
2911                 do_stats(ssl, worker, 1);
2912                 return;
2913         } else if(cmdcmp(p, "status", 6)) {
2914                 do_status(ssl, worker);
2915                 return;
2916         } else if(cmdcmp(p, "dump_cache", 10)) {
2917                 (void)dump_cache(ssl, worker);
2918                 return;
2919         } else if(cmdcmp(p, "load_cache", 10)) {
2920                 if(load_cache(ssl, worker)) send_ok(ssl);
2921                 return;
2922         } else if(cmdcmp(p, "list_forwards", 13)) {
2923                 do_list_forwards(ssl, worker);
2924                 return;
2925         } else if(cmdcmp(p, "list_stubs", 10)) {
2926                 do_list_stubs(ssl, worker);
2927                 return;
2928         } else if(cmdcmp(p, "list_insecure", 13)) {
2929                 do_insecure_list(ssl, worker);
2930                 return;
2931         } else if(cmdcmp(p, "list_local_zones", 16)) {
2932                 do_list_local_zones(ssl, worker->daemon->local_zones);
2933                 return;
2934         } else if(cmdcmp(p, "list_local_data", 15)) {
2935                 do_list_local_data(ssl, worker, worker->daemon->local_zones);
2936                 return;
2937         } else if(cmdcmp(p, "view_list_local_zones", 21)) {
2938                 do_view_list_local_zones(ssl, worker, skipwhite(p+21));
2939                 return;
2940         } else if(cmdcmp(p, "view_list_local_data", 20)) {
2941                 do_view_list_local_data(ssl, worker, skipwhite(p+20));
2942                 return;
2943         } else if(cmdcmp(p, "ratelimit_list", 14)) {
2944                 do_ratelimit_list(ssl, worker, p+14);
2945                 return;
2946         } else if(cmdcmp(p, "ip_ratelimit_list", 17)) {
2947                 do_ip_ratelimit_list(ssl, worker, p+17);
2948                 return;
2949         } else if(cmdcmp(p, "list_auth_zones", 15)) {
2950                 do_list_auth_zones(ssl, worker->env.auth_zones);
2951                 return;
2952         } else if(cmdcmp(p, "auth_zone_reload", 16)) {
2953                 do_auth_zone_reload(ssl, worker, skipwhite(p+16));
2954                 return;
2955         } else if(cmdcmp(p, "auth_zone_transfer", 18)) {
2956                 do_auth_zone_transfer(ssl, worker, skipwhite(p+18));
2957                 return;
2958         } else if(cmdcmp(p, "stub_add", 8)) {
2959                 /* must always distribute this cmd */
2960                 if(rc) distribute_cmd(rc, ssl, cmd);
2961                 do_stub_add(ssl, worker, skipwhite(p+8));
2962                 return;
2963         } else if(cmdcmp(p, "stub_remove", 11)) {
2964                 /* must always distribute this cmd */
2965                 if(rc) distribute_cmd(rc, ssl, cmd);
2966                 do_stub_remove(ssl, worker, skipwhite(p+11));
2967                 return;
2968         } else if(cmdcmp(p, "forward_add", 11)) {
2969                 /* must always distribute this cmd */
2970                 if(rc) distribute_cmd(rc, ssl, cmd);
2971                 do_forward_add(ssl, worker, skipwhite(p+11));
2972                 return;
2973         } else if(cmdcmp(p, "forward_remove", 14)) {
2974                 /* must always distribute this cmd */
2975                 if(rc) distribute_cmd(rc, ssl, cmd);
2976                 do_forward_remove(ssl, worker, skipwhite(p+14));
2977                 return;
2978         } else if(cmdcmp(p, "insecure_add", 12)) {
2979                 /* must always distribute this cmd */
2980                 if(rc) distribute_cmd(rc, ssl, cmd);
2981                 do_insecure_add(ssl, worker, skipwhite(p+12));
2982                 return;
2983         } else if(cmdcmp(p, "insecure_remove", 15)) {
2984                 /* must always distribute this cmd */
2985                 if(rc) distribute_cmd(rc, ssl, cmd);
2986                 do_insecure_remove(ssl, worker, skipwhite(p+15));
2987                 return;
2988         } else if(cmdcmp(p, "forward", 7)) {
2989                 /* must always distribute this cmd */
2990                 if(rc) distribute_cmd(rc, ssl, cmd);
2991                 do_forward(ssl, worker, skipwhite(p+7));
2992                 return;
2993         } else if(cmdcmp(p, "flush_stats", 11)) {
2994                 /* must always distribute this cmd */
2995                 if(rc) distribute_cmd(rc, ssl, cmd);
2996                 do_flush_stats(ssl, worker);
2997                 return;
2998         } else if(cmdcmp(p, "flush_requestlist", 17)) {
2999                 /* must always distribute this cmd */
3000                 if(rc) distribute_cmd(rc, ssl, cmd);
3001                 do_flush_requestlist(ssl, worker);
3002                 return;
3003         } else if(cmdcmp(p, "lookup", 6)) {
3004                 do_lookup(ssl, worker, skipwhite(p+6));
3005                 return;
3006         }
3007
3008 #ifdef THREADS_DISABLED
3009         /* other processes must execute the command as well */
3010         /* commands that should not be distributed, returned above. */
3011         if(rc) { /* only if this thread is the master (rc) thread */
3012                 /* done before the code below, which may split the string */
3013                 distribute_cmd(rc, ssl, cmd);
3014         }
3015 #endif
3016         if(cmdcmp(p, "verbosity", 9)) {
3017                 do_verbosity(ssl, skipwhite(p+9));
3018         } else if(cmdcmp(p, "local_zone_remove", 17)) {
3019                 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3020         } else if(cmdcmp(p, "local_zones_remove", 18)) {
3021                 do_zones_remove(ssl, worker->daemon->local_zones);
3022         } else if(cmdcmp(p, "local_zone", 10)) {
3023                 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3024         } else if(cmdcmp(p, "local_zones", 11)) {
3025                 do_zones_add(ssl, worker->daemon->local_zones);
3026         } else if(cmdcmp(p, "local_data_remove", 17)) {
3027                 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3028         } else if(cmdcmp(p, "local_datas_remove", 18)) {
3029                 do_datas_remove(ssl, worker->daemon->local_zones);
3030         } else if(cmdcmp(p, "local_data", 10)) {
3031                 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3032         } else if(cmdcmp(p, "local_datas", 11)) {
3033                 do_datas_add(ssl, worker->daemon->local_zones);
3034         } else if(cmdcmp(p, "view_local_zone_remove", 22)) {
3035                 do_view_zone_remove(ssl, worker, skipwhite(p+22));
3036         } else if(cmdcmp(p, "view_local_zone", 15)) {
3037                 do_view_zone_add(ssl, worker, skipwhite(p+15));
3038         } else if(cmdcmp(p, "view_local_data_remove", 22)) {
3039                 do_view_data_remove(ssl, worker, skipwhite(p+22));
3040         } else if(cmdcmp(p, "view_local_datas_remove", 23)){
3041                 do_view_datas_remove(ssl, worker, skipwhite(p+23));
3042         } else if(cmdcmp(p, "view_local_data", 15)) {
3043                 do_view_data_add(ssl, worker, skipwhite(p+15));
3044         } else if(cmdcmp(p, "view_local_datas", 16)) {
3045                 do_view_datas_add(ssl, worker, skipwhite(p+16));
3046         } else if(cmdcmp(p, "flush_zone", 10)) {
3047                 do_flush_zone(ssl, worker, skipwhite(p+10));
3048         } else if(cmdcmp(p, "flush_type", 10)) {
3049                 do_flush_type(ssl, worker, skipwhite(p+10));
3050         } else if(cmdcmp(p, "flush_infra", 11)) {
3051                 do_flush_infra(ssl, worker, skipwhite(p+11));
3052         } else if(cmdcmp(p, "flush", 5)) {
3053                 do_flush_name(ssl, worker, skipwhite(p+5));
3054         } else if(cmdcmp(p, "dump_requestlist", 16)) {
3055                 do_dump_requestlist(ssl, worker);
3056         } else if(cmdcmp(p, "dump_infra", 10)) {
3057                 do_dump_infra(ssl, worker);
3058         } else if(cmdcmp(p, "log_reopen", 10)) {
3059                 do_log_reopen(ssl, worker);
3060         } else if(cmdcmp(p, "set_option", 10)) {
3061                 do_set_option(ssl, worker, skipwhite(p+10));
3062         } else if(cmdcmp(p, "get_option", 10)) {
3063                 do_get_option(ssl, worker, skipwhite(p+10));
3064         } else if(cmdcmp(p, "flush_bogus", 11)) {
3065                 do_flush_bogus(ssl, worker);
3066         } else if(cmdcmp(p, "flush_negative", 14)) {
3067                 do_flush_negative(ssl, worker);
3068         } else {
3069                 (void)ssl_printf(ssl, "error unknown command '%s'\n", p);
3070         }
3071 }
3072
3073 void
3074 daemon_remote_exec(struct worker* worker)
3075 {
3076         /* read the cmd string */
3077         uint8_t* msg = NULL;
3078         uint32_t len = 0;
3079         if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
3080                 log_err("daemon_remote_exec: tube_read_msg failed");
3081                 return;
3082         }
3083         verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
3084         execute_cmd(NULL, NULL, (char*)msg, worker);
3085         free(msg);
3086 }
3087
3088 /** handle remote control request */
3089 static void
3090 handle_req(struct daemon_remote* rc, struct rc_state* s, RES* res)
3091 {
3092         int r;
3093         char pre[10];
3094         char magic[7];
3095         char buf[1024];
3096 #ifdef USE_WINSOCK
3097         /* makes it possible to set the socket blocking again. */
3098         /* basically removes it from winsock_event ... */
3099         WSAEventSelect(s->c->fd, NULL, 0);
3100 #endif
3101         fd_set_block(s->c->fd);
3102
3103         /* try to read magic UBCT[version]_space_ string */
3104         if(res->ssl) {
3105                 ERR_clear_error();
3106                 if((r=SSL_read(res->ssl, magic, (int)sizeof(magic)-1)) <= 0) {
3107                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN)
3108                                 return;
3109                         log_crypto_err("could not SSL_read");
3110                         return;
3111                 }
3112         } else {
3113                 while(1) {
3114                         ssize_t rr = recv(res->fd, magic, sizeof(magic)-1, 0);
3115                         if(rr <= 0) {
3116                                 if(rr == 0) return;
3117                                 if(errno == EINTR || errno == EAGAIN)
3118                                         continue;
3119 #ifndef USE_WINSOCK
3120                                 log_err("could not recv: %s", strerror(errno));
3121 #else
3122                                 log_err("could not recv: %s", wsa_strerror(WSAGetLastError()));
3123 #endif
3124                                 return;
3125                         }
3126                         r = (int)rr;
3127                         break;
3128                 }
3129         }
3130         magic[6] = 0;
3131         if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
3132                 verbose(VERB_QUERY, "control connection has bad magic string");
3133                 /* probably wrong tool connected, ignore it completely */
3134                 return;
3135         }
3136
3137         /* read the command line */
3138         if(!ssl_read_line(res, buf, sizeof(buf))) {
3139                 return;
3140         }
3141         snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
3142         if(strcmp(magic, pre) != 0) {
3143                 verbose(VERB_QUERY, "control connection had bad "
3144                         "version %s, cmd: %s", magic, buf);
3145                 ssl_printf(res, "error version mismatch\n");
3146                 return;
3147         }
3148         verbose(VERB_DETAIL, "control cmd: %s", buf);
3149
3150         /* figure out what to do */
3151         execute_cmd(rc, res, buf, rc->worker);
3152 }
3153
3154 /** handle SSL_do_handshake changes to the file descriptor to wait for later */
3155 static int
3156 remote_handshake_later(struct daemon_remote* rc, struct rc_state* s,
3157         struct comm_point* c, int r, int r2)
3158 {
3159         if(r2 == SSL_ERROR_WANT_READ) {
3160                 if(s->shake_state == rc_hs_read) {
3161                         /* try again later */
3162                         return 0;
3163                 }
3164                 s->shake_state = rc_hs_read;
3165                 comm_point_listen_for_rw(c, 1, 0);
3166                 return 0;
3167         } else if(r2 == SSL_ERROR_WANT_WRITE) {
3168                 if(s->shake_state == rc_hs_write) {
3169                         /* try again later */
3170                         return 0;
3171                 }
3172                 s->shake_state = rc_hs_write;
3173                 comm_point_listen_for_rw(c, 0, 1);
3174                 return 0;
3175         } else {
3176                 if(r == 0)
3177                         log_err("remote control connection closed prematurely");
3178                 log_addr(VERB_OPS, "failed connection from",
3179                         &s->c->repinfo.addr, s->c->repinfo.addrlen);
3180                 log_crypto_err("remote control failed ssl");
3181                 clean_point(rc, s);
3182         }
3183         return 0;
3184 }
3185
3186 int remote_control_callback(struct comm_point* c, void* arg, int err,
3187         struct comm_reply* ATTR_UNUSED(rep))
3188 {
3189         RES res;
3190         struct rc_state* s = (struct rc_state*)arg;
3191         struct daemon_remote* rc = s->rc;
3192         int r;
3193         if(err != NETEVENT_NOERROR) {
3194                 if(err==NETEVENT_TIMEOUT)
3195                         log_err("remote control timed out");
3196                 clean_point(rc, s);
3197                 return 0;
3198         }
3199         if(s->ssl) {
3200                 /* (continue to) setup the SSL connection */
3201                 ERR_clear_error();
3202                 r = SSL_do_handshake(s->ssl);
3203                 if(r != 1) {
3204                         int r2 = SSL_get_error(s->ssl, r);
3205                         return remote_handshake_later(rc, s, c, r, r2);
3206                 }
3207                 s->shake_state = rc_none;
3208         }
3209
3210         /* once handshake has completed, check authentication */
3211         if (!rc->use_cert) {
3212                 verbose(VERB_ALGO, "unauthenticated remote control connection");
3213         } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
3214                 X509* x = SSL_get_peer_certificate(s->ssl);
3215                 if(!x) {
3216                         verbose(VERB_DETAIL, "remote control connection "
3217                                 "provided no client certificate");
3218                         clean_point(rc, s);
3219                         return 0;
3220                 }
3221                 verbose(VERB_ALGO, "remote control connection authenticated");
3222                 X509_free(x);
3223         } else {
3224                 verbose(VERB_DETAIL, "remote control connection failed to "
3225                         "authenticate with client certificate");
3226                 clean_point(rc, s);
3227                 return 0;
3228         }
3229
3230         /* if OK start to actually handle the request */
3231         res.ssl = s->ssl;
3232         res.fd = c->fd;
3233         handle_req(rc, s, &res);
3234
3235         verbose(VERB_ALGO, "remote control operation completed");
3236         clean_point(rc, s);
3237         return 0;
3238 }