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