contrib/unbound/daemon/remote.c

   1 /*
   2  * daemon/remote.c - remote control for the unbound daemon.
   3  *
   4  * Copyright (c) 2008, NLnet Labs. All rights reserved.
   5  *
   6  * This software is open source.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * Redistributions of source code must retain the above copyright notice,
  13  * this list of conditions and the following disclaimer.
  14  *
  15  * Redistributions in binary form must reproduce the above copyright notice,
  16  * this list of conditions and the following disclaimer in the documentation
  17  * and/or other materials provided with the distribution.
  18  *
  19  * Neither the name of the NLNET LABS nor the names of its contributors may
  20  * be used to endorse or promote products derived from this software without
  21  * specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  24  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  25  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  26  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  27  * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
  29  * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  30  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  31  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  32  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  33  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /**
  37  * \file
  38  *
  39  * This file contains the remote control functionality for the daemon.
  40  * The remote control can be performed using either the commandline
  41  * unbound-control tool, or a TLS capable web browser.
  42  * The channel is secured using TLSv1, and certificates.
  43  * Both the server and the client(control tool) have their own keys.
  44  */
  45 #include "config.h"
  46 #ifdef HAVE_OPENSSL_ERR_H
  47 #include <openssl/err.h>
  48 #endif
  49 #ifdef HAVE_OPENSSL_DH_H
  50 #include <openssl/dh.h>
  51 #endif
  52 #ifdef HAVE_OPENSSL_BN_H
  53 #include <openssl/bn.h>
  54 #endif
  55
  56 #include <ctype.h>
  57 #include "daemon/remote.h"
  58 #include "daemon/worker.h"
  59 #include "daemon/daemon.h"
  60 #include "daemon/stats.h"
  61 #include "daemon/cachedump.h"
  62 #include "util/log.h"
  63 #include "util/config_file.h"
  64 #include "util/net_help.h"
  65 #include "util/module.h"
  66 #include "services/listen_dnsport.h"
  67 #include "services/cache/rrset.h"
  68 #include "services/cache/infra.h"
  69 #include "services/mesh.h"
  70 #include "services/localzone.h"
  71 #include "services/authzone.h"
  72 #include "services/rpz.h"
  73 #include "util/storage/slabhash.h"
  74 #include "util/fptr_wlist.h"
  75 #include "util/data/dname.h"
  76 #include "validator/validator.h"
  77 #include "validator/val_kcache.h"
  78 #include "validator/val_kentry.h"
  79 #include "validator/val_anchor.h"
  80 #include "iterator/iterator.h"
  81 #include "iterator/iter_fwd.h"
  82 #include "iterator/iter_hints.h"
  83 #include "iterator/iter_delegpt.h"
  84 #include "services/outbound_list.h"
  85 #include "services/outside_network.h"
  86 #include "sldns/str2wire.h"
  87 #include "sldns/parseutil.h"
  88 #include "sldns/wire2str.h"
  89 #include "sldns/sbuffer.h"
  90
  91 #ifdef HAVE_SYS_TYPES_H
  92 #  include <sys/types.h>
  93 #endif
  94 #ifdef HAVE_SYS_STAT_H
  95 #include <sys/stat.h>
  96 #endif
  97 #ifdef HAVE_NETDB_H
  98 #include <netdb.h>
  99 #endif
 100
 101 /* just for portability */
 102 #ifdef SQ
 103 #undef SQ
 104 #endif
 105
 106 /** what to put on statistics lines between var and value, ": " or "=" */
 107 #define SQ "="
 108 /** if true, inhibits a lot of =0 lines from the stats output */
 109 static const int inhibit_zero = 1;
 110
 111 /** subtract timers and the values do not overflow or become negative */
 112 static void
 113 timeval_subtract(struct timeval* d, const struct timeval* end,
 114         const struct timeval* start)
 115 {
 116 #ifndef S_SPLINT_S
 117         time_t end_usec = end->tv_usec;
 118         d->tv_sec = end->tv_sec - start->tv_sec;
 119         if(end_usec < start->tv_usec) {
 120                 end_usec += 1000000;
 121                 d->tv_sec--;
 122         }
 123         d->tv_usec = end_usec - start->tv_usec;
 124 #endif
 125 }
 126
 127 /** divide sum of timers to get average */
 128 static void
 129 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d)
 130 {
 131 #ifndef S_SPLINT_S
 132         size_t leftover;
 133         if(d <= 0) {
 134                 avg->tv_sec = 0;
 135                 avg->tv_usec = 0;
 136                 return;
 137         }
 138         avg->tv_sec = sum->tv_sec / d;
 139         avg->tv_usec = sum->tv_usec / d;
 140         /* handle fraction from seconds divide */
 141         leftover = sum->tv_sec - avg->tv_sec*d;
 142         if(leftover <= 0)
 143                 leftover = 0;
 144         avg->tv_usec += (((long long)leftover)*((long long)1000000))/d;
 145         if(avg->tv_sec < 0)
 146                 avg->tv_sec = 0;
 147         if(avg->tv_usec < 0)
 148                 avg->tv_usec = 0;
 149 #endif
 150 }
 151
 152 static int
 153 remote_setup_ctx(struct daemon_remote* rc, struct config_file* cfg)
 154 {
 155         char* s_cert;
 156         char* s_key;
 157         rc->ctx = SSL_CTX_new(SSLv23_server_method());
 158         if(!rc->ctx) {
 159                 log_crypto_err("could not SSL_CTX_new");
 160                 return 0;
 161         }
 162         if(!listen_sslctx_setup(rc->ctx)) {
 163                 return 0;
 164         }
 165
 166         s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
 167         s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
 168         if(!s_cert || !s_key) {
 169                 log_err("out of memory in remote control fname");
 170                 goto setup_error;
 171         }
 172         verbose(VERB_ALGO, "setup SSL certificates");
 173         if (!SSL_CTX_use_certificate_chain_file(rc->ctx,s_cert)) {
 174                 log_err("Error for server-cert-file: %s", s_cert);
 175                 log_crypto_err("Error in SSL_CTX use_certificate_chain_file");
 176                 goto setup_error;
 177         }
 178         if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) {
 179                 log_err("Error for server-key-file: %s", s_key);
 180                 log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
 181                 goto setup_error;
 182         }
 183         if(!SSL_CTX_check_private_key(rc->ctx)) {
 184                 log_err("Error for server-key-file: %s", s_key);
 185                 log_crypto_err("Error in SSL_CTX check_private_key");
 186                 goto setup_error;
 187         }
 188         listen_sslctx_setup_2(rc->ctx);
 189         if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) {
 190                 log_crypto_err("Error setting up SSL_CTX verify locations");
 191         setup_error:
 192                 free(s_cert);
 193                 free(s_key);
 194                 return 0;
 195         }
 196         SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert));
 197         SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL);
 198         free(s_cert);
 199         free(s_key);
 200         return 1;
 201 }
 202
 203 struct daemon_remote*
 204 daemon_remote_create(struct config_file* cfg)
 205 {
 206         struct daemon_remote* rc = (struct daemon_remote*)calloc(1,
 207                 sizeof(*rc));
 208         if(!rc) {
 209                 log_err("out of memory in daemon_remote_create");
 210                 return NULL;
 211         }
 212         rc->max_active = 10;
 213
 214         if(!cfg->remote_control_enable) {
 215                 rc->ctx = NULL;
 216                 return rc;
 217         }
 218         if(options_remote_is_address(cfg) && cfg->control_use_cert) {
 219                 if(!remote_setup_ctx(rc, cfg)) {
 220                         daemon_remote_delete(rc);
 221                         return NULL;
 222                 }
 223                 rc->use_cert = 1;
 224         } else {
 225                 struct config_strlist* p;
 226                 rc->ctx = NULL;
 227                 rc->use_cert = 0;
 228                 if(!options_remote_is_address(cfg))
 229                   for(p = cfg->control_ifs.first; p; p = p->next) {
 230                         if(p->str && p->str[0] != '/')
 231                                 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);
 232                 }
 233         }
 234         return rc;
 235 }
 236
 237 void daemon_remote_clear(struct daemon_remote* rc)
 238 {
 239         struct rc_state* p, *np;
 240         if(!rc) return;
 241         /* but do not close the ports */
 242         listen_list_delete(rc->accept_list);
 243         rc->accept_list = NULL;
 244         /* do close these sockets */
 245         p = rc->busy_list;
 246         while(p) {
 247                 np = p->next;
 248                 if(p->ssl)
 249                         SSL_free(p->ssl);
 250                 comm_point_delete(p->c);
 251                 free(p);
 252                 p = np;
 253         }
 254         rc->busy_list = NULL;
 255         rc->active = 0;
 256         rc->worker = NULL;
 257 }
 258
 259 void daemon_remote_delete(struct daemon_remote* rc)
 260 {
 261         if(!rc) return;
 262         daemon_remote_clear(rc);
 263         if(rc->ctx) {
 264                 SSL_CTX_free(rc->ctx);
 265         }
 266         free(rc);
 267 }
 268
 269 /**
 270  * Add and open a new control port
 271  * @param ip: ip str
 272  * @param nr: port nr
 273  * @param list: list head
 274  * @param noproto_is_err: if lack of protocol support is an error.
 275  * @param cfg: config with username for chown of unix-sockets.
 276  * @return false on failure.
 277  */
 278 static int
 279 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err,
 280         struct config_file* cfg)
 281 {
 282         struct addrinfo hints;
 283         struct addrinfo* res;
 284         struct listen_port* n;
 285         int noproto = 0;
 286         int fd, r;
 287         char port[15];
 288         snprintf(port, sizeof(port), "%d", nr);
 289         port[sizeof(port)-1]=0;
 290         memset(&hints, 0, sizeof(hints));
 291         log_assert(ip);
 292
 293         if(ip[0] == '/') {
 294                 /* This looks like a local socket */
 295                 fd = create_local_accept_sock(ip, &noproto, cfg->use_systemd);
 296                 /*
 297                  * Change socket ownership and permissions so users other
 298                  * than root can access it provided they are in the same
 299                  * group as the user we run as.
 300                  */
 301                 if(fd != -1) {
 302 #ifdef HAVE_CHOWN
 303                         chmod(ip, (mode_t)(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP));
 304                         if (cfg->username && cfg->username[0] &&
 305                                 cfg_uid != (uid_t)-1) {
 306                                 if(chown(ip, cfg_uid, cfg_gid) == -1)
 307                                         verbose(VERB_QUERY, "cannot chown %u.%u %s: %s",
 308                                           (unsigned)cfg_uid, (unsigned)cfg_gid,
 309                                           ip, strerror(errno));
 310                         }
 311 #else
 312                         (void)cfg;
 313 #endif
 314                 }
 315         } else {
 316                 hints.ai_socktype = SOCK_STREAM;
 317                 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
 318                 if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
 319 #ifdef USE_WINSOCK
 320                         if(!noproto_is_err && r == EAI_NONAME) {
 321                                 /* tried to lookup the address as name */
 322                                 return 1; /* return success, but do nothing */
 323                         }
 324 #endif /* USE_WINSOCK */
 325                         log_err("control interface %s:%s getaddrinfo: %s %s",
 326                                 ip?ip:"default", port, gai_strerror(r),
 327 #ifdef EAI_SYSTEM
 328                                 r==EAI_SYSTEM?(char*)strerror(errno):""
 329 #else
 330                                 ""
 331 #endif
 332                         );
 333                         return 0;
 334                 }
 335
 336                 /* open fd */
 337                 fd = create_tcp_accept_sock(res, 1, &noproto, 0,
 338                         cfg->ip_transparent, 0, 0, cfg->ip_freebind,
 339                         cfg->use_systemd, cfg->ip_dscp);
 340                 freeaddrinfo(res);
 341         }
 342
 343         if(fd == -1 && noproto) {
 344                 if(!noproto_is_err)
 345                         return 1; /* return success, but do nothing */
 346                 log_err("cannot open control interface %s %d : "
 347                         "protocol not supported", ip, nr);
 348                 return 0;
 349         }
 350         if(fd == -1) {
 351                 log_err("cannot open control interface %s %d", ip, nr);
 352                 return 0;
 353         }
 354
 355         /* alloc */
 356         n = (struct listen_port*)calloc(1, sizeof(*n));
 357         if(!n) {
 358                 sock_close(fd);
 359                 log_err("out of memory");
 360                 return 0;
 361         }
 362         n->next = *list;
 363         *list = n;
 364         n->fd = fd;
 365         return 1;
 366 }
 367
 368 struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 369 {
 370         struct listen_port* l = NULL;
 371         log_assert(cfg->remote_control_enable && cfg->control_port);
 372         if(cfg->control_ifs.first) {
 373                 char** rcif = NULL;
 374                 int i, num_rcif = 0;
 375                 if(!resolve_interface_names(NULL, 0, cfg->control_ifs.first,
 376                         &rcif, &num_rcif)) {
 377                         return NULL;
 378                 }
 379                 for(i=0; i<num_rcif; i++) {
 380                         if(!add_open(rcif[i], cfg->control_port, &l, 1, cfg)) {
 381                                 listening_ports_free(l);
 382                                 config_del_strarray(rcif, num_rcif);
 383                                 return NULL;
 384                         }
 385                 }
 386                 config_del_strarray(rcif, num_rcif);
 387         } else {
 388                 /* defaults */
 389                 if(cfg->do_ip6 &&
 390                         !add_open("::1", cfg->control_port, &l, 0, cfg)) {
 391                         listening_ports_free(l);
 392                         return NULL;
 393                 }
 394                 if(cfg->do_ip4 &&
 395                         !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) {
 396                         listening_ports_free(l);
 397                         return NULL;
 398                 }
 399         }
 400         return l;
 401 }
 402
 403 /** open accept commpoint */
 404 static int
 405 accept_open(struct daemon_remote* rc, int fd)
 406 {
 407         struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
 408         if(!n) {
 409                 log_err("out of memory");
 410                 return 0;
 411         }
 412         n->next = rc->accept_list;
 413         rc->accept_list = n;
 414         /* open commpt */
 415         n->com = comm_point_create_raw(rc->worker->base, fd, 0,
 416                 &remote_accept_callback, rc);
 417         if(!n->com)
 418                 return 0;
 419         /* keep this port open, its fd is kept in the rc portlist */
 420         n->com->do_not_close = 1;
 421         return 1;
 422 }
 423
 424 int daemon_remote_open_accept(struct daemon_remote* rc,
 425         struct listen_port* ports, struct worker* worker)
 426 {
 427         struct listen_port* p;
 428         rc->worker = worker;
 429         for(p = ports; p; p = p->next) {
 430                 if(!accept_open(rc, p->fd)) {
 431                         log_err("could not create accept comm point");
 432                         return 0;
 433                 }
 434         }
 435         return 1;
 436 }
 437
 438 void daemon_remote_stop_accept(struct daemon_remote* rc)
 439 {
 440         struct listen_list* p;
 441         for(p=rc->accept_list; p; p=p->next) {
 442                 comm_point_stop_listening(p->com);
 443         }
 444 }
 445
 446 void daemon_remote_start_accept(struct daemon_remote* rc)
 447 {
 448         struct listen_list* p;
 449         for(p=rc->accept_list; p; p=p->next) {
 450                 comm_point_start_listening(p->com, -1, -1);
 451         }
 452 }
 453
 454 int remote_accept_callback(struct comm_point* c, void* arg, int err,
 455         struct comm_reply* ATTR_UNUSED(rep))
 456 {
 457         struct daemon_remote* rc = (struct daemon_remote*)arg;
 458         struct sockaddr_storage addr;
 459         socklen_t addrlen;
 460         int newfd;
 461         struct rc_state* n;
 462         if(err != NETEVENT_NOERROR) {
 463                 log_err("error %d on remote_accept_callback", err);
 464                 return 0;
 465         }
 466         /* perform the accept */
 467         newfd = comm_point_perform_accept(c, &addr, &addrlen);
 468         if(newfd == -1)
 469                 return 0;
 470         /* create new commpoint unless we are servicing already */
 471         if(rc->active >= rc->max_active) {
 472                 log_warn("drop incoming remote control: too many connections");
 473         close_exit:
 474                 sock_close(newfd);
 475                 return 0;
 476         }
 477
 478         /* setup commpoint to service the remote control command */
 479         n = (struct rc_state*)calloc(1, sizeof(*n));
 480         if(!n) {
 481                 log_err("out of memory");
 482                 goto close_exit;
 483         }
 484         n->fd = newfd;
 485         /* start in reading state */
 486         n->c = comm_point_create_raw(rc->worker->base, newfd, 0,
 487                 &remote_control_callback, n);
 488         if(!n->c) {
 489                 log_err("out of memory");
 490                 free(n);
 491                 goto close_exit;
 492         }
 493         log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
 494         n->c->do_not_close = 0;
 495         comm_point_stop_listening(n->c);
 496         comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
 497         memcpy(&n->c->repinfo.addr, &addr, addrlen);
 498         n->c->repinfo.addrlen = addrlen;
 499         if(rc->use_cert) {
 500                 n->shake_state = rc_hs_read;
 501                 n->ssl = SSL_new(rc->ctx);
 502                 if(!n->ssl) {
 503                         log_crypto_err("could not SSL_new");
 504                         comm_point_delete(n->c);
 505                         free(n);
 506                         goto close_exit;
 507                 }
 508                 SSL_set_accept_state(n->ssl);
 509                 (void)SSL_set_mode(n->ssl, (long)SSL_MODE_AUTO_RETRY);
 510                 if(!SSL_set_fd(n->ssl, newfd)) {
 511                         log_crypto_err("could not SSL_set_fd");
 512                         SSL_free(n->ssl);
 513                         comm_point_delete(n->c);
 514                         free(n);
 515                         goto close_exit;
 516                 }
 517         } else {
 518                 n->ssl = NULL;
 519         }
 520
 521         n->rc = rc;
 522         n->next = rc->busy_list;
 523         rc->busy_list = n;
 524         rc->active ++;
 525
 526         /* perform the first nonblocking read already, for windows,
 527          * so it can return wouldblock. could be faster too. */
 528         (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
 529         return 0;
 530 }
 531
 532 /** delete from list */
 533 static void
 534 state_list_remove_elem(struct rc_state** list, struct comm_point* c)
 535 {
 536         while(*list) {
 537                 if( (*list)->c == c) {
 538                         *list = (*list)->next;
 539                         return;
 540                 }
 541                 list = &(*list)->next;
 542         }
 543 }
 544
 545 /** decrease active count and remove commpoint from busy list */
 546 static void
 547 clean_point(struct daemon_remote* rc, struct rc_state* s)
 548 {
 549         state_list_remove_elem(&rc->busy_list, s->c);
 550         rc->active --;
 551         if(s->ssl) {
 552                 SSL_shutdown(s->ssl);
 553                 SSL_free(s->ssl);
 554         }
 555         comm_point_delete(s->c);
 556         free(s);
 557 }
 558
 559 int
 560 ssl_print_text(RES* res, const char* text)
 561 {
 562         int r;
 563         if(!res)
 564                 return 0;
 565         if(res->ssl) {
 566                 ERR_clear_error();
 567                 if((r=SSL_write(res->ssl, text, (int)strlen(text))) <= 0) {
 568                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 569                                 verbose(VERB_QUERY, "warning, in SSL_write, peer "
 570                                         "closed connection");
 571                                 return 0;
 572                         }
 573                         log_crypto_err("could not SSL_write");
 574                         return 0;
 575                 }
 576         } else {
 577                 size_t at = 0;
 578                 while(at < strlen(text)) {
 579                         ssize_t r = send(res->fd, text+at, strlen(text)-at, 0);
 580                         if(r == -1) {
 581                                 if(errno == EAGAIN || errno == EINTR)
 582                                         continue;
 583                                 log_err("could not send: %s",
 584                                         sock_strerror(errno));
 585                                 return 0;
 586                         }
 587                         at += r;
 588                 }
 589         }
 590         return 1;
 591 }
 592
 593 /** print text over the ssl connection */
 594 static int
 595 ssl_print_vmsg(RES* ssl, const char* format, va_list args)
 596 {
 597         char msg[1024];
 598         vsnprintf(msg, sizeof(msg), format, args);
 599         return ssl_print_text(ssl, msg);
 600 }
 601
 602 /** printf style printing to the ssl connection */
 603 int ssl_printf(RES* ssl, const char* format, ...)
 604 {
 605         va_list args;
 606         int ret;
 607         va_start(args, format);
 608         ret = ssl_print_vmsg(ssl, format, args);
 609         va_end(args);
 610         return ret;
 611 }
 612
 613 int
 614 ssl_read_line(RES* res, char* buf, size_t max)
 615 {
 616         int r;
 617         size_t len = 0;
 618         if(!res)
 619                 return 0;
 620         while(len < max) {
 621                 if(res->ssl) {
 622                         ERR_clear_error();
 623                         if((r=SSL_read(res->ssl, buf+len, 1)) <= 0) {
 624                                 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
 625                                         buf[len] = 0;
 626                                         return 1;
 627                                 }
 628                                 log_crypto_err("could not SSL_read");
 629                                 return 0;
 630                         }
 631                 } else {
 632                         while(1) {
 633                                 ssize_t rr = recv(res->fd, buf+len, 1, 0);
 634                                 if(rr <= 0) {
 635                                         if(rr == 0) {
 636                                                 buf[len] = 0;
 637                                                 return 1;
 638                                         }
 639                                         if(errno == EINTR || errno == EAGAIN)
 640                                                 continue;
 641                                         log_err("could not recv: %s",
 642                                                 sock_strerror(errno));
 643                                         return 0;
 644                                 }
 645                                 break;
 646                         }
 647                 }
 648                 if(buf[len] == '\n') {
 649                         /* return string without \n */
 650                         buf[len] = 0;
 651                         return 1;
 652                 }
 653                 len++;
 654         }
 655         buf[max-1] = 0;
 656         log_err("control line too long (%d): %s", (int)max, buf);
 657         return 0;
 658 }
 659
 660 /** skip whitespace, return new pointer into string */
 661 static char*
 662 skipwhite(char* str)
 663 {
 664         /* EOS \0 is not a space */
 665         while( isspace((unsigned char)*str) )
 666                 str++;
 667         return str;
 668 }
 669
 670 /** send the OK to the control client */
 671 static void send_ok(RES* ssl)
 672 {
 673         (void)ssl_printf(ssl, "ok\n");
 674 }
 675
 676 /** do the stop command */
 677 static void
 678 do_stop(RES* ssl, struct worker* worker)
 679 {
 680         worker->need_to_exit = 1;
 681         comm_base_exit(worker->base);
 682         send_ok(ssl);
 683 }
 684
 685 /** do the reload command */
 686 static void
 687 do_reload(RES* ssl, struct worker* worker)
 688 {
 689         worker->need_to_exit = 0;
 690         comm_base_exit(worker->base);
 691         send_ok(ssl);
 692 }
 693
 694 /** do the verbosity command */
 695 static void
 696 do_verbosity(RES* ssl, char* str)
 697 {
 698         int val = atoi(str);
 699         if(val == 0 && strcmp(str, "0") != 0) {
 700                 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
 701                 return;
 702         }
 703         verbosity = val;
 704         send_ok(ssl);
 705 }
 706
 707 /** print stats from statinfo */
 708 static int
 709 print_stats(RES* ssl, const char* nm, struct ub_stats_info* s)
 710 {
 711         struct timeval sumwait, avg;
 712         if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm,
 713                 (unsigned long)s->svr.num_queries)) return 0;
 714         if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm,
 715                 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0;
 716         if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm,
 717                 (unsigned long)(s->svr.num_queries
 718                         - s->svr.num_queries_missed_cache))) return 0;
 719         if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm,
 720                 (unsigned long)s->svr.num_queries_missed_cache)) return 0;
 721         if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm,
 722                 (unsigned long)s->svr.num_queries_prefetch)) return 0;
 723         if(!ssl_printf(ssl, "%s.num.expired"SQ"%lu\n", nm,
 724                 (unsigned long)s->svr.ans_expired)) return 0;
 725         if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm,
 726                 (unsigned long)s->mesh_replies_sent)) return 0;
 727 #ifdef USE_DNSCRYPT
 728         if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm,
 729                 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0;
 730         if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm,
 731                 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0;
 732         if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm,
 733                 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0;
 734         if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm,
 735                 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0;
 736 #endif
 737         if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
 738                 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
 739                         (double)s->svr.sum_query_list_size/
 740                         (double)(s->svr.num_queries_missed_cache+
 741                         s->svr.num_queries_prefetch) : 0.0)) return 0;
 742         if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm,
 743                 (unsigned long)s->svr.max_query_list_size)) return 0;
 744         if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm,
 745                 (unsigned long)s->mesh_jostled)) return 0;
 746         if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm,
 747                 (unsigned long)s->mesh_dropped)) return 0;
 748         if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm,
 749                 (unsigned long)s->mesh_num_states)) return 0;
 750         if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm,
 751                 (unsigned long)s->mesh_num_reply_states)) return 0;
 752 #ifndef S_SPLINT_S
 753         sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
 754         sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
 755 #endif
 756         timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
 757         if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
 758                 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
 759         if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm,
 760                 s->mesh_time_median)) return 0;
 761         if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm,
 762                 (unsigned long)s->svr.tcp_accept_usage)) return 0;
 763         return 1;
 764 }
 765
 766 /** print stats for one thread */
 767 static int
 768 print_thread_stats(RES* ssl, int i, struct ub_stats_info* s)
 769 {
 770         char nm[32];
 771         snprintf(nm, sizeof(nm), "thread%d", i);
 772         nm[sizeof(nm)-1]=0;
 773         return print_stats(ssl, nm, s);
 774 }
 775
 776 /** print long number */
 777 static int
 778 print_longnum(RES* ssl, const char* desc, size_t x)
 779 {
 780         if(x > 1024*1024*1024) {
 781                 /* more than a Gb */
 782                 size_t front = x / (size_t)1000000;
 783                 size_t back = x % (size_t)1000000;
 784                 return ssl_printf(ssl, "%s%u%6.6u\n", desc,
 785                         (unsigned)front, (unsigned)back);
 786         } else {
 787                 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x);
 788         }
 789 }
 790
 791 /** print mem stats */
 792 static int
 793 print_mem(RES* ssl, struct worker* worker, struct daemon* daemon,
 794         struct ub_stats_info* s)
 795 {
 796         size_t msg, rrset, val, iter, respip;
 797 #ifdef CLIENT_SUBNET
 798         size_t subnet = 0;
 799 #endif /* CLIENT_SUBNET */
 800 #ifdef USE_IPSECMOD
 801         size_t ipsecmod = 0;
 802 #endif /* USE_IPSECMOD */
 803 #ifdef USE_DNSCRYPT
 804         size_t dnscrypt_shared_secret = 0;
 805         size_t dnscrypt_nonce = 0;
 806 #endif /* USE_DNSCRYPT */
 807 #ifdef WITH_DYNLIBMODULE
 808     size_t dynlib = 0;
 809 #endif /* WITH_DYNLIBMODULE */
 810         msg = slabhash_get_mem(daemon->env->msg_cache);
 811         rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
 812         val = mod_get_mem(&worker->env, "validator");
 813         iter = mod_get_mem(&worker->env, "iterator");
 814         respip = mod_get_mem(&worker->env, "respip");
 815 #ifdef CLIENT_SUBNET
 816         subnet = mod_get_mem(&worker->env, "subnetcache");
 817 #endif /* CLIENT_SUBNET */
 818 #ifdef USE_IPSECMOD
 819         ipsecmod = mod_get_mem(&worker->env, "ipsecmod");
 820 #endif /* USE_IPSECMOD */
 821 #ifdef USE_DNSCRYPT
 822         if(daemon->dnscenv) {
 823                 dnscrypt_shared_secret = slabhash_get_mem(
 824                         daemon->dnscenv->shared_secrets_cache);
 825                 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache);
 826         }
 827 #endif /* USE_DNSCRYPT */
 828 #ifdef WITH_DYNLIBMODULE
 829     dynlib = mod_get_mem(&worker->env, "dynlib");
 830 #endif /* WITH_DYNLIBMODULE */
 831
 832         if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
 833                 return 0;
 834         if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
 835                 return 0;
 836         if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
 837                 return 0;
 838         if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
 839                 return 0;
 840         if(!print_longnum(ssl, "mem.mod.respip"SQ, respip))
 841                 return 0;
 842 #ifdef CLIENT_SUBNET
 843         if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet))
 844                 return 0;
 845 #endif /* CLIENT_SUBNET */
 846 #ifdef USE_IPSECMOD
 847         if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod))
 848                 return 0;
 849 #endif /* USE_IPSECMOD */
 850 #ifdef USE_DNSCRYPT
 851         if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ,
 852                         dnscrypt_shared_secret))
 853                 return 0;
 854         if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ,
 855                         dnscrypt_nonce))
 856                 return 0;
 857 #endif /* USE_DNSCRYPT */
 858 #ifdef WITH_DYNLIBMODULE
 859         if(!print_longnum(ssl, "mem.mod.dynlibmod"SQ, dynlib))
 860                 return 0;
 861 #endif /* WITH_DYNLIBMODULE */
 862         if(!print_longnum(ssl, "mem.streamwait"SQ,
 863                 (size_t)s->svr.mem_stream_wait))
 864                 return 0;
 865         if(!print_longnum(ssl, "mem.http.query_buffer"SQ,
 866                 (size_t)s->svr.mem_http2_query_buffer))
 867                 return 0;
 868         if(!print_longnum(ssl, "mem.http.response_buffer"SQ,
 869                 (size_t)s->svr.mem_http2_response_buffer))
 870                 return 0;
 871         return 1;
 872 }
 873
 874 /** print uptime stats */
 875 static int
 876 print_uptime(RES* ssl, struct worker* worker, int reset)
 877 {
 878         struct timeval now = *worker->env.now_tv;
 879         struct timeval up, dt;
 880         timeval_subtract(&up, &now, &worker->daemon->time_boot);
 881         timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
 882         if(reset)
 883                 worker->daemon->time_last_stat = now;
 884         if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n",
 885                 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
 886         if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n",
 887                 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
 888         if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n",
 889                 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
 890         return 1;
 891 }
 892
 893 /** print extended histogram */
 894 static int
 895 print_hist(RES* ssl, struct ub_stats_info* s)
 896 {
 897         struct timehist* hist;
 898         size_t i;
 899         hist = timehist_setup();
 900         if(!hist) {
 901                 log_err("out of memory");
 902                 return 0;
 903         }
 904         timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
 905         for(i=0; i<hist->num; i++) {
 906                 if(!ssl_printf(ssl,
 907                         "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
 908                         (int)hist->buckets[i].lower.tv_sec,
 909                         (int)hist->buckets[i].lower.tv_usec,
 910                         (int)hist->buckets[i].upper.tv_sec,
 911                         (int)hist->buckets[i].upper.tv_usec,
 912                         (unsigned long)hist->buckets[i].count)) {
 913                         timehist_delete(hist);
 914                         return 0;
 915                 }
 916         }
 917         timehist_delete(hist);
 918         return 1;
 919 }
 920
 921 /** print extended stats */
 922 static int
 923 print_ext(RES* ssl, struct ub_stats_info* s)
 924 {
 925         int i;
 926         char nm[32];
 927         const sldns_rr_descriptor* desc;
 928         const sldns_lookup_table* lt;
 929         /* TYPE */
 930         for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
 931                 if(inhibit_zero && s->svr.qtype[i] == 0)
 932                         continue;
 933                 desc = sldns_rr_descript((uint16_t)i);
 934                 if(desc && desc->_name) {
 935                         snprintf(nm, sizeof(nm), "%s", desc->_name);
 936                 } else if (i == LDNS_RR_TYPE_IXFR) {
 937                         snprintf(nm, sizeof(nm), "IXFR");
 938                 } else if (i == LDNS_RR_TYPE_AXFR) {
 939                         snprintf(nm, sizeof(nm), "AXFR");
 940                 } else if (i == LDNS_RR_TYPE_MAILA) {
 941                         snprintf(nm, sizeof(nm), "MAILA");
 942                 } else if (i == LDNS_RR_TYPE_MAILB) {
 943                         snprintf(nm, sizeof(nm), "MAILB");
 944                 } else if (i == LDNS_RR_TYPE_ANY) {
 945                         snprintf(nm, sizeof(nm), "ANY");
 946                 } else {
 947                         snprintf(nm, sizeof(nm), "TYPE%d", i);
 948                 }
 949                 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n",
 950                         nm, (unsigned long)s->svr.qtype[i])) return 0;
 951         }
 952         if(!inhibit_zero || s->svr.qtype_big) {
 953                 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n",
 954                         (unsigned long)s->svr.qtype_big)) return 0;
 955         }
 956         /* CLASS */
 957         for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
 958                 if(inhibit_zero && s->svr.qclass[i] == 0)
 959                         continue;
 960                 lt = sldns_lookup_by_id(sldns_rr_classes, i);
 961                 if(lt && lt->name) {
 962                         snprintf(nm, sizeof(nm), "%s", lt->name);
 963                 } else {
 964                         snprintf(nm, sizeof(nm), "CLASS%d", i);
 965                 }
 966                 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n",
 967                         nm, (unsigned long)s->svr.qclass[i])) return 0;
 968         }
 969         if(!inhibit_zero || s->svr.qclass_big) {
 970                 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n",
 971                         (unsigned long)s->svr.qclass_big)) return 0;
 972         }
 973         /* OPCODE */
 974         for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
 975                 if(inhibit_zero && s->svr.qopcode[i] == 0)
 976                         continue;
 977                 lt = sldns_lookup_by_id(sldns_opcodes, i);
 978                 if(lt && lt->name) {
 979                         snprintf(nm, sizeof(nm), "%s", lt->name);
 980                 } else {
 981                         snprintf(nm, sizeof(nm), "OPCODE%d", i);
 982                 }
 983                 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n",
 984                         nm, (unsigned long)s->svr.qopcode[i])) return 0;
 985         }
 986         /* transport */
 987         if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n",
 988                 (unsigned long)s->svr.qtcp)) return 0;
 989         if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n",
 990                 (unsigned long)s->svr.qtcp_outgoing)) return 0;
 991         if(!ssl_printf(ssl, "num.query.udpout"SQ"%lu\n",
 992                 (unsigned long)s->svr.qudp_outgoing)) return 0;
 993         if(!ssl_printf(ssl, "num.query.tls"SQ"%lu\n",
 994                 (unsigned long)s->svr.qtls)) return 0;
 995         if(!ssl_printf(ssl, "num.query.tls.resume"SQ"%lu\n",
 996                 (unsigned long)s->svr.qtls_resume)) return 0;
 997         if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n",
 998                 (unsigned long)s->svr.qipv6)) return 0;
 999         if(!ssl_printf(ssl, "num.query.https"SQ"%lu\n",
1000                 (unsigned long)s->svr.qhttps)) return 0;
1001         /* flags */
1002         if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n",
1003                 (unsigned long)s->svr.qbit_QR)) return 0;
1004         if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n",
1005                 (unsigned long)s->svr.qbit_AA)) return 0;
1006         if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n",
1007                 (unsigned long)s->svr.qbit_TC)) return 0;
1008         if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n",
1009                 (unsigned long)s->svr.qbit_RD)) return 0;
1010         if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n",
1011                 (unsigned long)s->svr.qbit_RA)) return 0;
1012         if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n",
1013                 (unsigned long)s->svr.qbit_Z)) return 0;
1014         if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n",
1015                 (unsigned long)s->svr.qbit_AD)) return 0;
1016         if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n",
1017                 (unsigned long)s->svr.qbit_CD)) return 0;
1018         if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n",
1019                 (unsigned long)s->svr.qEDNS)) return 0;
1020         if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n",
1021                 (unsigned long)s->svr.qEDNS_DO)) return 0;
1022
1023         /* RCODE */
1024         for(i=0; i<UB_STATS_RCODE_NUM; i++) {
1025                 /* Always include RCODEs 0-5 */
1026                 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
1027                         continue;
1028                 lt = sldns_lookup_by_id(sldns_rcodes, i);
1029                 if(lt && lt->name) {
1030                         snprintf(nm, sizeof(nm), "%s", lt->name);
1031                 } else {
1032                         snprintf(nm, sizeof(nm), "RCODE%d", i);
1033                 }
1034                 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n",
1035                         nm, (unsigned long)s->svr.ans_rcode[i])) return 0;
1036         }
1037         if(!inhibit_zero || s->svr.ans_rcode_nodata) {
1038                 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n",
1039                         (unsigned long)s->svr.ans_rcode_nodata)) return 0;
1040         }
1041         /* iteration */
1042         if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n",
1043                 (unsigned long)s->svr.queries_ratelimited)) return 0;
1044         /* validation */
1045         if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n",
1046                 (unsigned long)s->svr.ans_secure)) return 0;
1047         if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n",
1048                 (unsigned long)s->svr.ans_bogus)) return 0;
1049         if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n",
1050                 (unsigned long)s->svr.rrset_bogus)) return 0;
1051         if(!ssl_printf(ssl, "num.query.aggressive.NOERROR"SQ"%lu\n",
1052                 (unsigned long)s->svr.num_neg_cache_noerror)) return 0;
1053         if(!ssl_printf(ssl, "num.query.aggressive.NXDOMAIN"SQ"%lu\n",
1054                 (unsigned long)s->svr.num_neg_cache_nxdomain)) return 0;
1055         /* threat detection */
1056         if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n",
1057                 (unsigned long)s->svr.unwanted_queries)) return 0;
1058         if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n",
1059                 (unsigned long)s->svr.unwanted_replies)) return 0;
1060         /* cache counts */
1061         if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n",
1062                 (unsigned)s->svr.msg_cache_count)) return 0;
1063         if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n",
1064                 (unsigned)s->svr.rrset_cache_count)) return 0;
1065         if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n",
1066                 (unsigned)s->svr.infra_cache_count)) return 0;
1067         if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n",
1068                 (unsigned)s->svr.key_cache_count)) return 0;
1069         /* applied RPZ actions */
1070         for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
1071                 if(i == RPZ_NO_OVERRIDE_ACTION)
1072                         continue;
1073                 if(inhibit_zero && s->svr.rpz_action[i] == 0)
1074                         continue;
1075                 if(!ssl_printf(ssl, "num.rpz.action.%s"SQ"%lu\n",
1076                         rpz_action_to_string(i),
1077                         (unsigned long)s->svr.rpz_action[i])) return 0;
1078         }
1079 #ifdef USE_DNSCRYPT
1080         if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n",
1081                 (unsigned)s->svr.shared_secret_cache_count)) return 0;
1082         if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n",
1083                 (unsigned)s->svr.nonce_cache_count)) return 0;
1084         if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n",
1085                 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0;
1086         if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n",
1087                 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0;
1088 #endif /* USE_DNSCRYPT */
1089         if(!ssl_printf(ssl, "num.query.authzone.up"SQ"%lu\n",
1090                 (unsigned long)s->svr.num_query_authzone_up)) return 0;
1091         if(!ssl_printf(ssl, "num.query.authzone.down"SQ"%lu\n",
1092                 (unsigned long)s->svr.num_query_authzone_down)) return 0;
1093 #ifdef CLIENT_SUBNET
1094         if(!ssl_printf(ssl, "num.query.subnet"SQ"%lu\n",
1095                 (unsigned long)s->svr.num_query_subnet)) return 0;
1096         if(!ssl_printf(ssl, "num.query.subnet_cache"SQ"%lu\n",
1097                 (unsigned long)s->svr.num_query_subnet_cache)) return 0;
1098 #endif /* CLIENT_SUBNET */
1099         return 1;
1100 }
1101
1102 /** do the stats command */
1103 static void
1104 do_stats(RES* ssl, struct worker* worker, int reset)
1105 {
1106         struct daemon* daemon = worker->daemon;
1107         struct ub_stats_info total;
1108         struct ub_stats_info s;
1109         int i;
1110         memset(&total, 0, sizeof(total));
1111         log_assert(daemon->num > 0);
1112         /* gather all thread statistics in one place */
1113         for(i=0; i<daemon->num; i++) {
1114                 server_stats_obtain(worker, daemon->workers[i], &s, reset);
1115                 if(!print_thread_stats(ssl, i, &s))
1116                         return;
1117                 if(i == 0)
1118                         total = s;
1119                 else    server_stats_add(&total, &s);
1120         }
1121         /* print the thread statistics */
1122         total.mesh_time_median /= (double)daemon->num;
1123         if(!print_stats(ssl, "total", &total))
1124                 return;
1125         if(!print_uptime(ssl, worker, reset))
1126                 return;
1127         if(daemon->cfg->stat_extended) {
1128                 if(!print_mem(ssl, worker, daemon, &total))
1129                         return;
1130                 if(!print_hist(ssl, &total))
1131                         return;
1132                 if(!print_ext(ssl, &total))
1133                         return;
1134         }
1135 }
1136
1137 /** parse commandline argument domain name */
1138 static int
1139 parse_arg_name(RES* ssl, char* str, uint8_t** res, size_t* len, int* labs)
1140 {
1141         uint8_t nm[LDNS_MAX_DOMAINLEN+1];
1142         size_t nmlen = sizeof(nm);
1143         int status;
1144         *res = NULL;
1145         *len = 0;
1146         *labs = 0;
1147         if(str[0] == '\0') {
1148                 ssl_printf(ssl, "error: this option requires a domain name\n");
1149                 return 0;
1150         }
1151         status = sldns_str2wire_dname_buf(str, nm, &nmlen);
1152         if(status != 0) {
1153                 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
1154                         LDNS_WIREPARSE_OFFSET(status),
1155                         sldns_get_errorstr_parse(status));
1156                 return 0;
1157         }
1158         *res = memdup(nm, nmlen);
1159         if(!*res) {
1160                 ssl_printf(ssl, "error out of memory\n");
1161                 return 0;
1162         }
1163         *labs = dname_count_size_labels(*res, len);
1164         return 1;
1165 }
1166
1167 /** find second argument, modifies string */
1168 static int
1169 find_arg2(RES* ssl, char* arg, char** arg2)
1170 {
1171         char* as = strchr(arg, ' ');
1172         char* at = strchr(arg, '\t');
1173         if(as && at) {
1174                 if(at < as)
1175                         as = at;
1176                 as[0]=0;
1177                 *arg2 = skipwhite(as+1);
1178         } else if(as) {
1179                 as[0]=0;
1180                 *arg2 = skipwhite(as+1);
1181         } else if(at) {
1182                 at[0]=0;
1183                 *arg2 = skipwhite(at+1);
1184         } else {
1185                 ssl_printf(ssl, "error could not find next argument "
1186                         "after %s\n", arg);
1187                 return 0;
1188         }
1189         return 1;
1190 }
1191
1192 /** Add a new zone */
1193 static int
1194 perform_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1195 {
1196         uint8_t* nm;
1197         int nmlabs;
1198         size_t nmlen;
1199         char* arg2;
1200         enum localzone_type t;
1201         struct local_zone* z;
1202         if(!find_arg2(ssl, arg, &arg2))
1203                 return 0;
1204         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1205                 return 0;
1206         if(!local_zone_str2type(arg2, &t)) {
1207                 ssl_printf(ssl, "error not a zone type. %s\n", arg2);
1208                 free(nm);
1209                 return 0;
1210         }
1211         lock_rw_wrlock(&zones->lock);
1212         if((z=local_zones_find(zones, nm, nmlen,
1213                 nmlabs, LDNS_RR_CLASS_IN))) {
1214                 /* already present in tree */
1215                 lock_rw_wrlock(&z->lock);
1216                 z->type = t; /* update type anyway */
1217                 lock_rw_unlock(&z->lock);
1218                 free(nm);
1219                 lock_rw_unlock(&zones->lock);
1220                 return 1;
1221         }
1222         if(!local_zones_add_zone(zones, nm, nmlen,
1223                 nmlabs, LDNS_RR_CLASS_IN, t)) {
1224                 lock_rw_unlock(&zones->lock);
1225                 ssl_printf(ssl, "error out of memory\n");
1226                 return 0;
1227         }
1228         lock_rw_unlock(&zones->lock);
1229         return 1;
1230 }
1231
1232 /** Do the local_zone command */
1233 static void
1234 do_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1235 {
1236         if(!perform_zone_add(ssl, zones, arg))
1237                 return;
1238         send_ok(ssl);
1239 }
1240
1241 /** Do the local_zones command */
1242 static void
1243 do_zones_add(RES* ssl, struct local_zones* zones)
1244 {
1245         char buf[2048];
1246         int num = 0;
1247         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1248                 if(buf[0] == 0x04 && buf[1] == 0)
1249                         break; /* end of transmission */
1250                 if(!perform_zone_add(ssl, zones, buf)) {
1251                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1252                                 return;
1253                 }
1254                 else
1255                         num++;
1256         }
1257         (void)ssl_printf(ssl, "added %d zones\n", num);
1258 }
1259
1260 /** Remove a zone */
1261 static int
1262 perform_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1263 {
1264         uint8_t* nm;
1265         int nmlabs;
1266         size_t nmlen;
1267         struct local_zone* z;
1268         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1269                 return 0;
1270         lock_rw_wrlock(&zones->lock);
1271         if((z=local_zones_find(zones, nm, nmlen,
1272                 nmlabs, LDNS_RR_CLASS_IN))) {
1273                 /* present in tree */
1274                 local_zones_del_zone(zones, z);
1275         }
1276         lock_rw_unlock(&zones->lock);
1277         free(nm);
1278         return 1;
1279 }
1280
1281 /** Do the local_zone_remove command */
1282 static void
1283 do_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1284 {
1285         if(!perform_zone_remove(ssl, zones, arg))
1286                 return;
1287         send_ok(ssl);
1288 }
1289
1290 /** Do the local_zones_remove command */
1291 static void
1292 do_zones_remove(RES* ssl, struct local_zones* zones)
1293 {
1294         char buf[2048];
1295         int num = 0;
1296         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1297                 if(buf[0] == 0x04 && buf[1] == 0)
1298                         break; /* end of transmission */
1299                 if(!perform_zone_remove(ssl, zones, buf)) {
1300                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1301                                 return;
1302                 }
1303                 else
1304                         num++;
1305         }
1306         (void)ssl_printf(ssl, "removed %d zones\n", num);
1307 }
1308
1309 /** check syntax of newly added RR */
1310 static int
1311 check_RR_syntax(RES* ssl, char* str, int line)
1312 {
1313         uint8_t rr[LDNS_RR_BUF_SIZE];
1314         size_t len = sizeof(rr), dname_len = 0;
1315         int s = sldns_str2wire_rr_buf(str, rr, &len, &dname_len, 3600,
1316                 NULL, 0, NULL, 0);
1317         if(s != 0) {
1318                 char linestr[32];
1319                 if(line == 0)
1320                         linestr[0]=0;
1321                 else    snprintf(linestr, sizeof(linestr), "line %d ", line);
1322                 if(!ssl_printf(ssl, "error parsing local-data at %sposition %d '%s': %s\n",
1323                         linestr, LDNS_WIREPARSE_OFFSET(s), str,
1324                         sldns_get_errorstr_parse(s)))
1325                         return 0;
1326                 return 0;
1327         }
1328         return 1;
1329 }
1330
1331 /** Add new RR data */
1332 static int
1333 perform_data_add(RES* ssl, struct local_zones* zones, char* arg, int line)
1334 {
1335         if(!check_RR_syntax(ssl, arg, line)) {
1336                 return 0;
1337         }
1338         if(!local_zones_add_RR(zones, arg)) {
1339                 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
1340                 return 0;
1341         }
1342         return 1;
1343 }
1344
1345 /** Do the local_data command */
1346 static void
1347 do_data_add(RES* ssl, struct local_zones* zones, char* arg)
1348 {
1349         if(!perform_data_add(ssl, zones, arg, 0))
1350                 return;
1351         send_ok(ssl);
1352 }
1353
1354 /** Do the local_datas command */
1355 static void
1356 do_datas_add(RES* ssl, struct local_zones* zones)
1357 {
1358         char buf[2048];
1359         int num = 0, line = 0;
1360         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1361                 if(buf[0] == 0x04 && buf[1] == 0)
1362                         break; /* end of transmission */
1363                 line++;
1364                 if(perform_data_add(ssl, zones, buf, line))
1365                         num++;
1366         }
1367         (void)ssl_printf(ssl, "added %d datas\n", num);
1368 }
1369
1370 /** Remove RR data */
1371 static int
1372 perform_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1373 {
1374         uint8_t* nm;
1375         int nmlabs;
1376         size_t nmlen;
1377         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1378                 return 0;
1379         local_zones_del_data(zones, nm,
1380                 nmlen, nmlabs, LDNS_RR_CLASS_IN);
1381         free(nm);
1382         return 1;
1383 }
1384
1385 /** Do the local_data_remove command */
1386 static void
1387 do_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1388 {
1389         if(!perform_data_remove(ssl, zones, arg))
1390                 return;
1391         send_ok(ssl);
1392 }
1393
1394 /** Do the local_datas_remove command */
1395 static void
1396 do_datas_remove(RES* ssl, struct local_zones* zones)
1397 {
1398         char buf[2048];
1399         int num = 0;
1400         while(ssl_read_line(ssl, buf, sizeof(buf))) {
1401                 if(buf[0] == 0x04 && buf[1] == 0)
1402                         break; /* end of transmission */
1403                 if(!perform_data_remove(ssl, zones, buf)) {
1404                         if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1405                                 return;
1406                 }
1407                 else
1408                         num++;
1409         }
1410         (void)ssl_printf(ssl, "removed %d datas\n", num);
1411 }
1412
1413 /** Add a new zone to view */
1414 static void
1415 do_view_zone_add(RES* ssl, struct worker* worker, char* arg)
1416 {
1417         char* arg2;
1418         struct view* v;
1419         if(!find_arg2(ssl, arg, &arg2))
1420                 return;
1421         v = views_find_view(worker->daemon->views,
1422                 arg, 1 /* get write lock*/);
1423         if(!v) {
1424                 ssl_printf(ssl,"no view with name: %s\n", arg);
1425                 return;
1426         }
1427         if(!v->local_zones) {
1428                 if(!(v->local_zones = local_zones_create())){
1429                         lock_rw_unlock(&v->lock);
1430                         ssl_printf(ssl,"error out of memory\n");
1431                         return;
1432                 }
1433                 if(!v->isfirst) {
1434                         /* Global local-zone is not used for this view,
1435                          * therefore add defaults to this view-specic
1436                          * local-zone. */
1437                         struct config_file lz_cfg;
1438                         memset(&lz_cfg, 0, sizeof(lz_cfg));
1439                         local_zone_enter_defaults(v->local_zones, &lz_cfg);
1440                 }
1441         }
1442         do_zone_add(ssl, v->local_zones, arg2);
1443         lock_rw_unlock(&v->lock);
1444 }
1445
1446 /** Remove a zone from view */
1447 static void
1448 do_view_zone_remove(RES* ssl, struct worker* worker, char* arg)
1449 {
1450         char* arg2;
1451         struct view* v;
1452         if(!find_arg2(ssl, arg, &arg2))
1453                 return;
1454         v = views_find_view(worker->daemon->views,
1455                 arg, 1 /* get write lock*/);
1456         if(!v) {
1457                 ssl_printf(ssl,"no view with name: %s\n", arg);
1458                 return;
1459         }
1460         if(!v->local_zones) {
1461                 lock_rw_unlock(&v->lock);
1462                 send_ok(ssl);
1463                 return;
1464         }
1465         do_zone_remove(ssl, v->local_zones, arg2);
1466         lock_rw_unlock(&v->lock);
1467 }
1468
1469 /** Add new RR data to view */
1470 static void
1471 do_view_data_add(RES* ssl, struct worker* worker, char* arg)
1472 {
1473         char* arg2;
1474         struct view* v;
1475         if(!find_arg2(ssl, arg, &arg2))
1476                 return;
1477         v = views_find_view(worker->daemon->views,
1478                 arg, 1 /* get write lock*/);
1479         if(!v) {
1480                 ssl_printf(ssl,"no view with name: %s\n", arg);
1481                 return;
1482         }
1483         if(!v->local_zones) {
1484                 if(!(v->local_zones = local_zones_create())){
1485                         lock_rw_unlock(&v->lock);
1486                         ssl_printf(ssl,"error out of memory\n");
1487                         return;
1488                 }
1489         }
1490         do_data_add(ssl, v->local_zones, arg2);
1491         lock_rw_unlock(&v->lock);
1492 }
1493
1494 /** Add new RR data from stdin to view */
1495 static void
1496 do_view_datas_add(RES* ssl, struct worker* worker, char* arg)
1497 {
1498         struct view* v;
1499         v = views_find_view(worker->daemon->views,
1500                 arg, 1 /* get write lock*/);
1501         if(!v) {
1502                 ssl_printf(ssl,"no view with name: %s\n", arg);
1503                 return;
1504         }
1505         if(!v->local_zones) {
1506                 if(!(v->local_zones = local_zones_create())){
1507                         lock_rw_unlock(&v->lock);
1508                         ssl_printf(ssl,"error out of memory\n");
1509                         return;
1510                 }
1511         }
1512         do_datas_add(ssl, v->local_zones);
1513         lock_rw_unlock(&v->lock);
1514 }
1515
1516 /** Remove RR data from view */
1517 static void
1518 do_view_data_remove(RES* ssl, struct worker* worker, char* arg)
1519 {
1520         char* arg2;
1521         struct view* v;
1522         if(!find_arg2(ssl, arg, &arg2))
1523                 return;
1524         v = views_find_view(worker->daemon->views,
1525                 arg, 1 /* get write lock*/);
1526         if(!v) {
1527                 ssl_printf(ssl,"no view with name: %s\n", arg);
1528                 return;
1529         }
1530         if(!v->local_zones) {
1531                 lock_rw_unlock(&v->lock);
1532                 send_ok(ssl);
1533                 return;
1534         }
1535         do_data_remove(ssl, v->local_zones, arg2);
1536         lock_rw_unlock(&v->lock);
1537 }
1538
1539 /** Remove RR data from stdin from view */
1540 static void
1541 do_view_datas_remove(RES* ssl, struct worker* worker, char* arg)
1542 {
1543         struct view* v;
1544         v = views_find_view(worker->daemon->views,
1545                 arg, 1 /* get write lock*/);
1546         if(!v) {
1547                 ssl_printf(ssl,"no view with name: %s\n", arg);
1548                 return;
1549         }
1550         if(!v->local_zones){
1551                 lock_rw_unlock(&v->lock);
1552                 ssl_printf(ssl, "removed 0 datas\n");
1553                 return;
1554         }
1555
1556         do_datas_remove(ssl, v->local_zones);
1557         lock_rw_unlock(&v->lock);
1558 }
1559
1560 /** cache lookup of nameservers */
1561 static void
1562 do_lookup(RES* ssl, struct worker* worker, char* arg)
1563 {
1564         uint8_t* nm;
1565         int nmlabs;
1566         size_t nmlen;
1567         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1568                 return;
1569         (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
1570         free(nm);
1571 }
1572
1573 /** flush something from rrset and msg caches */
1574 static void
1575 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
1576         uint16_t t, uint16_t c)
1577 {
1578         hashvalue_type h;
1579         struct query_info k;
1580         rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
1581         if(t == LDNS_RR_TYPE_SOA)
1582                 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
1583                         PACKED_RRSET_SOA_NEG);
1584         k.qname = nm;
1585         k.qname_len = nmlen;
1586         k.qtype = t;
1587         k.qclass = c;
1588         k.local_alias = NULL;
1589         h = query_info_hash(&k, 0);
1590         slabhash_remove(worker->env.msg_cache, h, &k);
1591         if(t == LDNS_RR_TYPE_AAAA) {
1592                 /* for AAAA also flush dns64 bit_cd packet */
1593                 h = query_info_hash(&k, BIT_CD);
1594                 slabhash_remove(worker->env.msg_cache, h, &k);
1595         }
1596 }
1597
1598 /** flush a type */
1599 static void
1600 do_flush_type(RES* ssl, struct worker* worker, char* arg)
1601 {
1602         uint8_t* nm;
1603         int nmlabs;
1604         size_t nmlen;
1605         char* arg2;
1606         uint16_t t;
1607         if(!find_arg2(ssl, arg, &arg2))
1608                 return;
1609         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1610                 return;
1611         t = sldns_get_rr_type_by_name(arg2);
1612         do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
1613
1614         free(nm);
1615         send_ok(ssl);
1616 }
1617
1618 /** flush statistics */
1619 static void
1620 do_flush_stats(RES* ssl, struct worker* worker)
1621 {
1622         worker_stats_clear(worker);
1623         send_ok(ssl);
1624 }
1625
1626 /**
1627  * Local info for deletion functions
1628  */
1629 struct del_info {
1630         /** worker */
1631         struct worker* worker;
1632         /** name to delete */
1633         uint8_t* name;
1634         /** length */
1635         size_t len;
1636         /** labels */
1637         int labs;
1638         /** time to invalidate to */
1639         time_t expired;
1640         /** number of rrsets removed */
1641         size_t num_rrsets;
1642         /** number of msgs removed */
1643         size_t num_msgs;
1644         /** number of key entries removed */
1645         size_t num_keys;
1646         /** length of addr */
1647         socklen_t addrlen;
1648         /** socket address for host deletion */
1649         struct sockaddr_storage addr;
1650 };
1651
1652 /** callback to delete hosts in infra cache */
1653 static void
1654 infra_del_host(struct lruhash_entry* e, void* arg)
1655 {
1656         /* entry is locked */
1657         struct del_info* inf = (struct del_info*)arg;
1658         struct infra_key* k = (struct infra_key*)e->key;
1659         if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
1660                 struct infra_data* d = (struct infra_data*)e->data;
1661                 d->probedelay = 0;
1662                 d->timeout_A = 0;
1663                 d->timeout_AAAA = 0;
1664                 d->timeout_other = 0;
1665                 rtt_init(&d->rtt);
1666                 if(d->ttl > inf->expired) {
1667                         d->ttl = inf->expired;
1668                         inf->num_keys++;
1669                 }
1670         }
1671 }
1672
1673 /** flush infra cache */
1674 static void
1675 do_flush_infra(RES* ssl, struct worker* worker, char* arg)
1676 {
1677         struct sockaddr_storage addr;
1678         socklen_t len;
1679         struct del_info inf;
1680         if(strcmp(arg, "all") == 0) {
1681                 slabhash_clear(worker->env.infra_cache->hosts);
1682                 send_ok(ssl);
1683                 return;
1684         }
1685         if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
1686                 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
1687                 return;
1688         }
1689         /* delete all entries from cache */
1690         /* what we do is to set them all expired */
1691         inf.worker = worker;
1692         inf.name = 0;
1693         inf.len = 0;
1694         inf.labs = 0;
1695         inf.expired = *worker->env.now;
1696         inf.expired -= 3; /* handle 3 seconds skew between threads */
1697         inf.num_rrsets = 0;
1698         inf.num_msgs = 0;
1699         inf.num_keys = 0;
1700         inf.addrlen = len;
1701         memmove(&inf.addr, &addr, len);
1702         slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
1703                 &inf);
1704         send_ok(ssl);
1705 }
1706
1707 /** flush requestlist */
1708 static void
1709 do_flush_requestlist(RES* ssl, struct worker* worker)
1710 {
1711         mesh_delete_all(worker->env.mesh);
1712         send_ok(ssl);
1713 }
1714
1715 /** callback to delete rrsets in a zone */
1716 static void
1717 zone_del_rrset(struct lruhash_entry* e, void* arg)
1718 {
1719         /* entry is locked */
1720         struct del_info* inf = (struct del_info*)arg;
1721         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1722         if(dname_subdomain_c(k->rk.dname, inf->name)) {
1723                 struct packed_rrset_data* d =
1724                         (struct packed_rrset_data*)e->data;
1725                 if(d->ttl > inf->expired) {
1726                         d->ttl = inf->expired;
1727                         inf->num_rrsets++;
1728                 }
1729         }
1730 }
1731
1732 /** callback to delete messages in a zone */
1733 static void
1734 zone_del_msg(struct lruhash_entry* e, void* arg)
1735 {
1736         /* entry is locked */
1737         struct del_info* inf = (struct del_info*)arg;
1738         struct msgreply_entry* k = (struct msgreply_entry*)e->key;
1739         if(dname_subdomain_c(k->key.qname, inf->name)) {
1740                 struct reply_info* d = (struct reply_info*)e->data;
1741                 if(d->ttl > inf->expired) {
1742                         d->ttl = inf->expired;
1743                         d->prefetch_ttl = inf->expired;
1744                         d->serve_expired_ttl = inf->expired;
1745                         inf->num_msgs++;
1746                 }
1747         }
1748 }
1749
1750 /** callback to delete keys in zone */
1751 static void
1752 zone_del_kcache(struct lruhash_entry* e, void* arg)
1753 {
1754         /* entry is locked */
1755         struct del_info* inf = (struct del_info*)arg;
1756         struct key_entry_key* k = (struct key_entry_key*)e->key;
1757         if(dname_subdomain_c(k->name, inf->name)) {
1758                 struct key_entry_data* d = (struct key_entry_data*)e->data;
1759                 if(d->ttl > inf->expired) {
1760                         d->ttl = inf->expired;
1761                         inf->num_keys++;
1762                 }
1763         }
1764 }
1765
1766 /** remove all rrsets and keys from zone from cache */
1767 static void
1768 do_flush_zone(RES* ssl, struct worker* worker, char* arg)
1769 {
1770         uint8_t* nm;
1771         int nmlabs;
1772         size_t nmlen;
1773         struct del_info inf;
1774         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1775                 return;
1776         /* delete all RRs and key entries from zone */
1777         /* what we do is to set them all expired */
1778         inf.worker = worker;
1779         inf.name = nm;
1780         inf.len = nmlen;
1781         inf.labs = nmlabs;
1782         inf.expired = *worker->env.now;
1783         inf.expired -= 3; /* handle 3 seconds skew between threads */
1784         inf.num_rrsets = 0;
1785         inf.num_msgs = 0;
1786         inf.num_keys = 0;
1787         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1788                 &zone_del_rrset, &inf);
1789
1790         slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
1791
1792         /* and validator cache */
1793         if(worker->env.key_cache) {
1794                 slabhash_traverse(worker->env.key_cache->slab, 1,
1795                         &zone_del_kcache, &inf);
1796         }
1797
1798         free(nm);
1799
1800         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1801                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1802                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1803 }
1804
1805 /** callback to delete bogus rrsets */
1806 static void
1807 bogus_del_rrset(struct lruhash_entry* e, void* arg)
1808 {
1809         /* entry is locked */
1810         struct del_info* inf = (struct del_info*)arg;
1811         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1812         if(d->security == sec_status_bogus) {
1813                 d->ttl = inf->expired;
1814                 inf->num_rrsets++;
1815         }
1816 }
1817
1818 /** callback to delete bogus messages */
1819 static void
1820 bogus_del_msg(struct lruhash_entry* e, void* arg)
1821 {
1822         /* entry is locked */
1823         struct del_info* inf = (struct del_info*)arg;
1824         struct reply_info* d = (struct reply_info*)e->data;
1825         if(d->security == sec_status_bogus) {
1826                 d->ttl = inf->expired;
1827                 inf->num_msgs++;
1828         }
1829 }
1830
1831 /** callback to delete bogus keys */
1832 static void
1833 bogus_del_kcache(struct lruhash_entry* e, void* arg)
1834 {
1835         /* entry is locked */
1836         struct del_info* inf = (struct del_info*)arg;
1837         struct key_entry_data* d = (struct key_entry_data*)e->data;
1838         if(d->isbad) {
1839                 d->ttl = inf->expired;
1840                 inf->num_keys++;
1841         }
1842 }
1843
1844 /** remove all bogus rrsets, msgs and keys from cache */
1845 static void
1846 do_flush_bogus(RES* ssl, struct worker* worker)
1847 {
1848         struct del_info inf;
1849         /* what we do is to set them all expired */
1850         inf.worker = worker;
1851         inf.expired = *worker->env.now;
1852         inf.expired -= 3; /* handle 3 seconds skew between threads */
1853         inf.num_rrsets = 0;
1854         inf.num_msgs = 0;
1855         inf.num_keys = 0;
1856         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1857                 &bogus_del_rrset, &inf);
1858
1859         slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
1860
1861         /* and validator cache */
1862         if(worker->env.key_cache) {
1863                 slabhash_traverse(worker->env.key_cache->slab, 1,
1864                         &bogus_del_kcache, &inf);
1865         }
1866
1867         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1868                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1869                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1870 }
1871
1872 /** callback to delete negative and servfail rrsets */
1873 static void
1874 negative_del_rrset(struct lruhash_entry* e, void* arg)
1875 {
1876         /* entry is locked */
1877         struct del_info* inf = (struct del_info*)arg;
1878         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1879         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1880         /* delete the parentside negative cache rrsets,
1881          * these are nameserver rrsets that failed lookup, rdata empty */
1882         if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 &&
1883                 d->rrsig_count == 0 && d->rr_len[0] == 0) {
1884                 d->ttl = inf->expired;
1885                 inf->num_rrsets++;
1886         }
1887 }
1888
1889 /** callback to delete negative and servfail messages */
1890 static void
1891 negative_del_msg(struct lruhash_entry* e, void* arg)
1892 {
1893         /* entry is locked */
1894         struct del_info* inf = (struct del_info*)arg;
1895         struct reply_info* d = (struct reply_info*)e->data;
1896         /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error
1897          * or NOERROR rcode with ANCOUNT==0: a NODATA answer */
1898         if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) {
1899                 d->ttl = inf->expired;
1900                 inf->num_msgs++;
1901         }
1902 }
1903
1904 /** callback to delete negative key entries */
1905 static void
1906 negative_del_kcache(struct lruhash_entry* e, void* arg)
1907 {
1908         /* entry is locked */
1909         struct del_info* inf = (struct del_info*)arg;
1910         struct key_entry_data* d = (struct key_entry_data*)e->data;
1911         /* could be bad because of lookup failure on the DS, DNSKEY, which
1912          * was nxdomain or servfail, and thus a result of negative lookups */
1913         if(d->isbad) {
1914                 d->ttl = inf->expired;
1915                 inf->num_keys++;
1916         }
1917 }
1918
1919 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */
1920 static void
1921 do_flush_negative(RES* ssl, struct worker* worker)
1922 {
1923         struct del_info inf;
1924         /* what we do is to set them all expired */
1925         inf.worker = worker;
1926         inf.expired = *worker->env.now;
1927         inf.expired -= 3; /* handle 3 seconds skew between threads */
1928         inf.num_rrsets = 0;
1929         inf.num_msgs = 0;
1930         inf.num_keys = 0;
1931         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1932                 &negative_del_rrset, &inf);
1933
1934         slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf);
1935
1936         /* and validator cache */
1937         if(worker->env.key_cache) {
1938                 slabhash_traverse(worker->env.key_cache->slab, 1,
1939                         &negative_del_kcache, &inf);
1940         }
1941
1942         (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1943                 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1944                 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1945 }
1946
1947 /** remove name rrset from cache */
1948 static void
1949 do_flush_name(RES* ssl, struct worker* w, char* arg)
1950 {
1951         uint8_t* nm;
1952         int nmlabs;
1953         size_t nmlen;
1954         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1955                 return;
1956         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
1957         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
1958         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
1959         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
1960         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
1961         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
1962         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
1963         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
1964         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
1965         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
1966
1967         free(nm);
1968         send_ok(ssl);
1969 }
1970
1971 /** printout a delegation point info */
1972 static int
1973 ssl_print_name_dp(RES* ssl, const char* str, uint8_t* nm, uint16_t dclass,
1974         struct delegpt* dp)
1975 {
1976         char buf[257];
1977         struct delegpt_ns* ns;
1978         struct delegpt_addr* a;
1979         int f = 0;
1980         if(str) { /* print header for forward, stub */
1981                 char* c = sldns_wire2str_class(dclass);
1982                 dname_str(nm, buf);
1983                 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) {
1984                         free(c);
1985                         return 0;
1986                 }
1987                 free(c);
1988         }
1989         for(ns = dp->nslist; ns; ns = ns->next) {
1990                 dname_str(ns->name, buf);
1991                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1992                         return 0;
1993                 f = 1;
1994         }
1995         for(a = dp->target_list; a; a = a->next_target) {
1996                 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
1997                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1998                         return 0;
1999                 f = 1;
2000         }
2001         return ssl_printf(ssl, "\n");
2002 }
2003
2004
2005 /** print root forwards */
2006 static int
2007 print_root_fwds(RES* ssl, struct iter_forwards* fwds, uint8_t* root)
2008 {
2009         struct delegpt* dp;
2010         dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
2011         if(!dp)
2012                 return ssl_printf(ssl, "off (using root hints)\n");
2013         /* if dp is returned it must be the root */
2014         log_assert(query_dname_compare(dp->name, root)==0);
2015         return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
2016 }
2017
2018 /** parse args into delegpt */
2019 static struct delegpt*
2020 parse_delegpt(RES* ssl, char* args, uint8_t* nm)
2021 {
2022         /* parse args and add in */
2023         char* p = args;
2024         char* todo;
2025         struct delegpt* dp = delegpt_create_mlc(nm);
2026         struct sockaddr_storage addr;
2027         socklen_t addrlen;
2028         char* auth_name;
2029         if(!dp) {
2030                 (void)ssl_printf(ssl, "error out of memory\n");
2031                 return NULL;
2032         }
2033         while(p) {
2034                 todo = p;
2035                 p = strchr(p, ' '); /* find next spot, if any */
2036                 if(p) {
2037                         *p++ = 0;       /* end this spot */
2038                         p = skipwhite(p); /* position at next spot */
2039                 }
2040                 /* parse address */
2041                 if(!authextstrtoaddr(todo, &addr, &addrlen, &auth_name)) {
2042                         uint8_t* dname= NULL;
2043                         int port;
2044                         dname = authextstrtodname(todo, &port, &auth_name);
2045                         if(!dname) {
2046                                 (void)ssl_printf(ssl, "error cannot parse"
2047                                         " '%s'\n", todo);
2048                                 delegpt_free_mlc(dp);
2049                                 return NULL;
2050                         }
2051 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST)
2052                         if(auth_name)
2053                                 log_err("no name verification functionality in "
2054                                 "ssl library, ignored name for %s", todo);
2055 #endif
2056                         if(!delegpt_add_ns_mlc(dp, dname, 0, auth_name, port)) {
2057                                 (void)ssl_printf(ssl, "error out of memory\n");
2058                                 free(dname);
2059                                 delegpt_free_mlc(dp);
2060                                 return NULL;
2061                         }
2062                 } else {
2063 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST)
2064                         if(auth_name)
2065                                 log_err("no name verification functionality in "
2066                                 "ssl library, ignored name for %s", todo);
2067 #endif
2068                         /* add address */
2069                         if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0,
2070                                 auth_name, -1)) {
2071                                 (void)ssl_printf(ssl, "error out of memory\n");
2072                                 delegpt_free_mlc(dp);
2073                                 return NULL;
2074                         }
2075                 }
2076         }
2077         dp->has_parent_side_NS = 1;
2078         return dp;
2079 }
2080
2081 /** do the status command */
2082 static void
2083 do_forward(RES* ssl, struct worker* worker, char* args)
2084 {
2085         struct iter_forwards* fwd = worker->env.fwds;
2086         uint8_t* root = (uint8_t*)"\000";
2087         if(!fwd) {
2088                 (void)ssl_printf(ssl, "error: structure not allocated\n");
2089                 return;
2090         }
2091         if(args == NULL || args[0] == 0) {
2092                 (void)print_root_fwds(ssl, fwd, root);
2093                 return;
2094         }
2095         /* set root forwards for this thread. since we are in remote control
2096          * the actual mesh is not running, so we can freely edit it. */
2097         /* delete all the existing queries first */
2098         mesh_delete_all(worker->env.mesh);
2099         if(strcmp(args, "off") == 0) {
2100                 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
2101         } else {
2102                 struct delegpt* dp;
2103                 if(!(dp = parse_delegpt(ssl, args, root)))
2104                         return;
2105                 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2106                         (void)ssl_printf(ssl, "error out of memory\n");
2107                         return;
2108                 }
2109         }
2110         send_ok(ssl);
2111 }
2112
2113 static int
2114 parse_fs_args(RES* ssl, char* args, uint8_t** nm, struct delegpt** dp,
2115         int* insecure, int* prime)
2116 {
2117         char* zonename;
2118         char* rest;
2119         size_t nmlen;
2120         int nmlabs;
2121         /* parse all -x args */
2122         while(args[0] == '+') {
2123                 if(!find_arg2(ssl, args, &rest))
2124                         return 0;
2125                 while(*(++args) != 0) {
2126                         if(*args == 'i' && insecure)
2127                                 *insecure = 1;
2128                         else if(*args == 'p' && prime)
2129                                 *prime = 1;
2130                         else {
2131                                 (void)ssl_printf(ssl, "error: unknown option %s\n", args);
2132                                 return 0;
2133                         }
2134                 }
2135                 args = rest;
2136         }
2137         /* parse name */
2138         if(dp) {
2139                 if(!find_arg2(ssl, args, &rest))
2140                         return 0;
2141                 zonename = args;
2142                 args = rest;
2143         } else  zonename = args;
2144         if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
2145                 return 0;
2146
2147         /* parse dp */
2148         if(dp) {
2149                 if(!(*dp = parse_delegpt(ssl, args, *nm))) {
2150                         free(*nm);
2151                         return 0;
2152                 }
2153         }
2154         return 1;
2155 }
2156
2157 /** do the forward_add command */
2158 static void
2159 do_forward_add(RES* ssl, struct worker* worker, char* args)
2160 {
2161         struct iter_forwards* fwd = worker->env.fwds;
2162         int insecure = 0;
2163         uint8_t* nm = NULL;
2164         struct delegpt* dp = NULL;
2165         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
2166                 return;
2167         if(insecure && worker->env.anchors) {
2168                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2169                         nm)) {
2170                         (void)ssl_printf(ssl, "error out of memory\n");
2171                         delegpt_free_mlc(dp);
2172                         free(nm);
2173                         return;
2174                 }
2175         }
2176         if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2177                 (void)ssl_printf(ssl, "error out of memory\n");
2178                 free(nm);
2179                 return;
2180         }
2181         free(nm);
2182         send_ok(ssl);
2183 }
2184
2185 /** do the forward_remove command */
2186 static void
2187 do_forward_remove(RES* ssl, struct worker* worker, char* args)
2188 {
2189         struct iter_forwards* fwd = worker->env.fwds;
2190         int insecure = 0;
2191         uint8_t* nm = NULL;
2192         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2193                 return;
2194         if(insecure && worker->env.anchors)
2195                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2196                         nm);
2197         forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
2198         free(nm);
2199         send_ok(ssl);
2200 }
2201
2202 /** do the stub_add command */
2203 static void
2204 do_stub_add(RES* ssl, struct worker* worker, char* args)
2205 {
2206         struct iter_forwards* fwd = worker->env.fwds;
2207         int insecure = 0, prime = 0;
2208         uint8_t* nm = NULL;
2209         struct delegpt* dp = NULL;
2210         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
2211                 return;
2212         if(insecure && worker->env.anchors) {
2213                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2214                         nm)) {
2215                         (void)ssl_printf(ssl, "error out of memory\n");
2216                         delegpt_free_mlc(dp);
2217                         free(nm);
2218                         return;
2219                 }
2220         }
2221         if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
2222                 if(insecure && worker->env.anchors)
2223                         anchors_delete_insecure(worker->env.anchors,
2224                                 LDNS_RR_CLASS_IN, nm);
2225                 (void)ssl_printf(ssl, "error out of memory\n");
2226                 delegpt_free_mlc(dp);
2227                 free(nm);
2228                 return;
2229         }
2230         if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
2231                 (void)ssl_printf(ssl, "error out of memory\n");
2232                 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2233                 if(insecure && worker->env.anchors)
2234                         anchors_delete_insecure(worker->env.anchors,
2235                                 LDNS_RR_CLASS_IN, nm);
2236                 free(nm);
2237                 return;
2238         }
2239         free(nm);
2240         send_ok(ssl);
2241 }
2242
2243 /** do the stub_remove command */
2244 static void
2245 do_stub_remove(RES* ssl, struct worker* worker, char* args)
2246 {
2247         struct iter_forwards* fwd = worker->env.fwds;
2248         int insecure = 0;
2249         uint8_t* nm = NULL;
2250         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2251                 return;
2252         if(insecure && worker->env.anchors)
2253                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2254                         nm);
2255         forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2256         hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
2257         free(nm);
2258         send_ok(ssl);
2259 }
2260
2261 /** do the insecure_add command */
2262 static void
2263 do_insecure_add(RES* ssl, struct worker* worker, char* arg)
2264 {
2265         size_t nmlen;
2266         int nmlabs;
2267         uint8_t* nm = NULL;
2268         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2269                 return;
2270         if(worker->env.anchors) {
2271                 if(!anchors_add_insecure(worker->env.anchors,
2272                         LDNS_RR_CLASS_IN, nm)) {
2273                         (void)ssl_printf(ssl, "error out of memory\n");
2274                         free(nm);
2275                         return;
2276                 }
2277         }
2278         free(nm);
2279         send_ok(ssl);
2280 }
2281
2282 /** do the insecure_remove command */
2283 static void
2284 do_insecure_remove(RES* ssl, struct worker* worker, char* arg)
2285 {
2286         size_t nmlen;
2287         int nmlabs;
2288         uint8_t* nm = NULL;
2289         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2290                 return;
2291         if(worker->env.anchors)
2292                 anchors_delete_insecure(worker->env.anchors,
2293                         LDNS_RR_CLASS_IN, nm);
2294         free(nm);
2295         send_ok(ssl);
2296 }
2297
2298 static void
2299 do_insecure_list(RES* ssl, struct worker* worker)
2300 {
2301         char buf[257];
2302         struct trust_anchor* a;
2303         if(worker->env.anchors) {
2304                 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) {
2305                         if(a->numDS == 0 && a->numDNSKEY == 0) {
2306                                 dname_str(a->name, buf);
2307                                 ssl_printf(ssl, "%s\n", buf);
2308                         }
2309                 }
2310         }
2311 }
2312
2313 /** do the status command */
2314 static void
2315 do_status(RES* ssl, struct worker* worker)
2316 {
2317         int i;
2318         time_t uptime;
2319         if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
2320                 return;
2321         if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
2322                 return;
2323         if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
2324                 return;
2325         if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
2326                 return;
2327         for(i=0; i<worker->daemon->mods.num; i++) {
2328                 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
2329                         return;
2330         }
2331         if(!ssl_printf(ssl, " ]\n"))
2332                 return;
2333         uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
2334         if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
2335                 return;
2336         if(!ssl_printf(ssl, "options:%s%s%s%s\n" ,
2337                 (worker->daemon->reuseport?" reuseport":""),
2338                 (worker->daemon->rc->accept_list?" control":""),
2339                 (worker->daemon->rc->accept_list && worker->daemon->rc->use_cert?"(ssl)":""),
2340                 (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)":"")
2341                 ))
2342                 return;
2343         if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
2344                 (int)getpid()))
2345                 return;
2346 }
2347
2348 /** get age for the mesh state */
2349 static void
2350 get_mesh_age(struct mesh_state* m, char* buf, size_t len,
2351         struct module_env* env)
2352 {
2353         if(m->reply_list) {
2354                 struct timeval d;
2355                 struct mesh_reply* r = m->reply_list;
2356                 /* last reply is the oldest */
2357                 while(r && r->next)
2358                         r = r->next;
2359                 timeval_subtract(&d, env->now_tv, &r->start_time);
2360                 snprintf(buf, len, ARG_LL "d.%6.6d",
2361                         (long long)d.tv_sec, (int)d.tv_usec);
2362         } else {
2363                 snprintf(buf, len, "-");
2364         }
2365 }
2366
2367 /** get status of a mesh state */
2368 static void
2369 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m,
2370         char* buf, size_t len)
2371 {
2372         enum module_ext_state s = m->s.ext_state[m->s.curmod];
2373         const char *modname = mesh->mods.mod[m->s.curmod]->name;
2374         size_t l;
2375         if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
2376                 m->s.minfo[m->s.curmod]) {
2377                 /* break into iterator to find out who its waiting for */
2378                 struct iter_qstate* qstate = (struct iter_qstate*)
2379                         m->s.minfo[m->s.curmod];
2380                 struct outbound_list* ol = &qstate->outlist;
2381                 struct outbound_entry* e;
2382                 snprintf(buf, len, "%s wait for", modname);
2383                 l = strlen(buf);
2384                 buf += l; len -= l;
2385                 if(ol->first == NULL)
2386                         snprintf(buf, len, " (empty_list)");
2387                 for(e = ol->first; e; e = e->next) {
2388                         snprintf(buf, len, " ");
2389                         l = strlen(buf);
2390                         buf += l; len -= l;
2391                         addr_to_str(&e->qsent->addr, e->qsent->addrlen,
2392                                 buf, len);
2393                         l = strlen(buf);
2394                         buf += l; len -= l;
2395                 }
2396         } else if(s == module_wait_subquery) {
2397                 /* look in subs from mesh state to see what */
2398                 char nm[257];
2399                 struct mesh_state_ref* sub;
2400                 snprintf(buf, len, "%s wants", modname);
2401                 l = strlen(buf);
2402                 buf += l; len -= l;
2403                 if(m->sub_set.count == 0)
2404                         snprintf(buf, len, " (empty_list)");
2405                 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
2406                         char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
2407                         char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
2408                         dname_str(sub->s->s.qinfo.qname, nm);
2409                         snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
2410                                 (c?c:"CLASS??"), nm);
2411                         l = strlen(buf);
2412                         buf += l; len -= l;
2413                         free(t);
2414                         free(c);
2415                 }
2416         } else {
2417                 snprintf(buf, len, "%s is %s", modname, strextstate(s));
2418         }
2419 }
2420
2421 /** do the dump_requestlist command */
2422 static void
2423 do_dump_requestlist(RES* ssl, struct worker* worker)
2424 {
2425         struct mesh_area* mesh;
2426         struct mesh_state* m;
2427         int num = 0;
2428         char buf[257];
2429         char timebuf[32];
2430         char statbuf[10240];
2431         if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
2432                 return;
2433         if(!ssl_printf(ssl, "#   type cl name    seconds    module status\n"))
2434                 return;
2435         /* show worker mesh contents */
2436         mesh = worker->env.mesh;
2437         if(!mesh) return;
2438         RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
2439                 char* t = sldns_wire2str_type(m->s.qinfo.qtype);
2440                 char* c = sldns_wire2str_class(m->s.qinfo.qclass);
2441                 dname_str(m->s.qinfo.qname, buf);
2442                 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
2443                 get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
2444                 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n",
2445                         num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
2446                         statbuf)) {
2447                         free(t);
2448                         free(c);
2449                         return;
2450                 }
2451                 num++;
2452                 free(t);
2453                 free(c);
2454         }
2455 }
2456
2457 /** structure for argument data for dump infra host */
2458 struct infra_arg {
2459         /** the infra cache */
2460         struct infra_cache* infra;
2461         /** the SSL connection */
2462         RES* ssl;
2463         /** the time now */
2464         time_t now;
2465         /** ssl failure? stop writing and skip the rest.  If the tcp
2466          * connection is broken, and writes fail, we then stop writing. */
2467         int ssl_failed;
2468 };
2469
2470 /** callback for every host element in the infra cache */
2471 static void
2472 dump_infra_host(struct lruhash_entry* e, void* arg)
2473 {
2474         struct infra_arg* a = (struct infra_arg*)arg;
2475         struct infra_key* k = (struct infra_key*)e->key;
2476         struct infra_data* d = (struct infra_data*)e->data;
2477         char ip_str[1024];
2478         char name[257];
2479         int port;
2480         if(a->ssl_failed)
2481                 return;
2482         addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
2483         dname_str(k->zonename, name);
2484         port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port);
2485         if(port != UNBOUND_DNS_PORT) {
2486                 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str),
2487                         "@%d", port);
2488         }
2489         /* skip expired stuff (only backed off) */
2490         if(d->ttl < a->now) {
2491                 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
2492                         if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
2493                                 name, d->rtt.rto))  {
2494                                 a->ssl_failed = 1;
2495                                 return;
2496                         }
2497                 }
2498                 return;
2499         }
2500         if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d "
2501                 "tA %d tAAAA %d tother %d "
2502                 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
2503                 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now),
2504                 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
2505                 d->timeout_A, d->timeout_AAAA, d->timeout_other,
2506                 (int)d->edns_lame_known, (int)d->edns_version,
2507                 (int)(a->now<d->probedelay?(d->probedelay - a->now):0),
2508                 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
2509                 (int)d->lame_other)) {
2510                 a->ssl_failed = 1;
2511                 return;
2512         }
2513 }
2514
2515 /** do the dump_infra command */
2516 static void
2517 do_dump_infra(RES* ssl, struct worker* worker)
2518 {
2519         struct infra_arg arg;
2520         arg.infra = worker->env.infra_cache;
2521         arg.ssl = ssl;
2522         arg.now = *worker->env.now;
2523         arg.ssl_failed = 0;
2524         slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
2525 }
2526
2527 /** do the log_reopen command */
2528 static void
2529 do_log_reopen(RES* ssl, struct worker* worker)
2530 {
2531         struct config_file* cfg = worker->env.cfg;
2532         send_ok(ssl);
2533         log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
2534 }
2535
2536 /** do the auth_zone_reload command */
2537 static void
2538 do_auth_zone_reload(RES* ssl, struct worker* worker, char* arg)
2539 {
2540         size_t nmlen;
2541         int nmlabs;
2542         uint8_t* nm = NULL;
2543         struct auth_zones* az = worker->env.auth_zones;
2544         struct auth_zone* z = NULL;
2545         struct auth_xfer* xfr = NULL;
2546         char* reason = NULL;
2547         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2548                 return;
2549         if(az) {
2550                 lock_rw_rdlock(&az->lock);
2551                 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2552                 if(z) {
2553                         lock_rw_wrlock(&z->lock);
2554                 }
2555                 xfr = auth_xfer_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2556                 if(xfr) {
2557                         lock_basic_lock(&xfr->lock);
2558                 }
2559                 lock_rw_unlock(&az->lock);
2560         }
2561         free(nm);
2562         if(!z) {
2563                 if(xfr) {
2564                         lock_basic_unlock(&xfr->lock);
2565                 }
2566                 (void)ssl_printf(ssl, "error no auth-zone %s\n", arg);
2567                 return;
2568         }
2569         if(!auth_zone_read_zonefile(z, worker->env.cfg)) {
2570                 lock_rw_unlock(&z->lock);
2571                 if(xfr) {
2572                         lock_basic_unlock(&xfr->lock);
2573                 }
2574                 (void)ssl_printf(ssl, "error failed to read %s\n", arg);
2575                 return;
2576         }
2577
2578         z->zone_expired = 0;
2579         if(xfr) {
2580                 xfr->zone_expired = 0;
2581                 if(!xfr_find_soa(z, xfr)) {
2582                         if(z->data.count == 0) {
2583                                 lock_rw_unlock(&z->lock);
2584                                 lock_basic_unlock(&xfr->lock);
2585                                 (void)ssl_printf(ssl, "zone %s has no contents\n", arg);
2586                                 return;
2587                         }
2588                         lock_rw_unlock(&z->lock);
2589                         lock_basic_unlock(&xfr->lock);
2590                         (void)ssl_printf(ssl, "error: no SOA in zone after read %s\n", arg);
2591                         return;
2592                 }
2593                 if(xfr->have_zone)
2594                         xfr->lease_time = *worker->env.now;
2595                 lock_basic_unlock(&xfr->lock);
2596         }
2597
2598         auth_zone_verify_zonemd(z, &worker->env, &worker->env.mesh->mods,
2599                 &reason, 0, 0);
2600         if(reason && z->zone_expired) {
2601                 lock_rw_unlock(&z->lock);
2602                 (void)ssl_printf(ssl, "error zonemd for %s failed: %s\n",
2603                         arg, reason);
2604                 free(reason);
2605                 return;
2606         } else if(reason && strcmp(reason, "ZONEMD verification successful")
2607                 ==0) {
2608                 (void)ssl_printf(ssl, "%s: %s\n", arg, reason);
2609         }
2610         lock_rw_unlock(&z->lock);
2611         free(reason);
2612         send_ok(ssl);
2613 }
2614
2615 /** do the auth_zone_transfer command */
2616 static void
2617 do_auth_zone_transfer(RES* ssl, struct worker* worker, char* arg)
2618 {
2619         size_t nmlen;
2620         int nmlabs;
2621         uint8_t* nm = NULL;
2622         struct auth_zones* az = worker->env.auth_zones;
2623         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2624                 return;
2625         if(!az || !auth_zones_startprobesequence(az, &worker->env, nm, nmlen,
2626                 LDNS_RR_CLASS_IN)) {
2627                 (void)ssl_printf(ssl, "error zone xfr task not found %s\n", arg);
2628                 free(nm);
2629                 return;
2630         }
2631         free(nm);
2632         send_ok(ssl);
2633 }
2634
2635 /** do the set_option command */
2636 static void
2637 do_set_option(RES* ssl, struct worker* worker, char* arg)
2638 {
2639         char* arg2;
2640         if(!find_arg2(ssl, arg, &arg2))
2641                 return;
2642         if(!config_set_option(worker->env.cfg, arg, arg2)) {
2643                 (void)ssl_printf(ssl, "error setting option\n");
2644                 return;
2645         }
2646         /* effectuate some arguments */
2647         if(strcmp(arg, "val-override-date:") == 0) {
2648                 int m = modstack_find(&worker->env.mesh->mods, "validator");
2649                 struct val_env* val_env = NULL;
2650                 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m];
2651                 if(val_env)
2652                         val_env->date_override = worker->env.cfg->val_date_override;
2653         }
2654         send_ok(ssl);
2655 }
2656
2657 /* routine to printout option values over SSL */
2658 void remote_get_opt_ssl(char* line, void* arg)
2659 {
2660         RES* ssl = (RES*)arg;
2661         (void)ssl_printf(ssl, "%s\n", line);
2662 }
2663
2664 /** do the get_option command */
2665 static void
2666 do_get_option(RES* ssl, struct worker* worker, char* arg)
2667 {
2668         int r;
2669         r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
2670         if(!r) {
2671                 (void)ssl_printf(ssl, "error unknown option\n");
2672                 return;
2673         }
2674 }
2675
2676 /** do the list_forwards command */
2677 static void
2678 do_list_forwards(RES* ssl, struct worker* worker)
2679 {
2680         /* since its a per-worker structure no locks needed */
2681         struct iter_forwards* fwds = worker->env.fwds;
2682         struct iter_forward_zone* z;
2683         struct trust_anchor* a;
2684         int insecure;
2685         RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
2686                 if(!z->dp) continue; /* skip empty marker for stub */
2687
2688                 /* see if it is insecure */
2689                 insecure = 0;
2690                 if(worker->env.anchors &&
2691                         (a=anchor_find(worker->env.anchors, z->name,
2692                         z->namelabs, z->namelen,  z->dclass))) {
2693                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2694                                 insecure = 1;
2695                         lock_basic_unlock(&a->lock);
2696                 }
2697
2698                 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"),
2699                         z->name, z->dclass, z->dp))
2700                         return;
2701         }
2702 }
2703
2704 /** do the list_stubs command */
2705 static void
2706 do_list_stubs(RES* ssl, struct worker* worker)
2707 {
2708         struct iter_hints_stub* z;
2709         struct trust_anchor* a;
2710         int insecure;
2711         char str[32];
2712         RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
2713
2714                 /* see if it is insecure */
2715                 insecure = 0;
2716                 if(worker->env.anchors &&
2717                         (a=anchor_find(worker->env.anchors, z->node.name,
2718                         z->node.labs, z->node.len,  z->node.dclass))) {
2719                         if(!a->keylist && !a->numDS && !a->numDNSKEY)
2720                                 insecure = 1;
2721                         lock_basic_unlock(&a->lock);
2722                 }
2723
2724                 snprintf(str, sizeof(str), "stub %sprime%s",
2725                         (z->noprime?"no":""), (insecure?" +i":""));
2726                 if(!ssl_print_name_dp(ssl, str, z->node.name,
2727                         z->node.dclass, z->dp))
2728                         return;
2729         }
2730 }
2731
2732 /** do the list_auth_zones command */
2733 static void
2734 do_list_auth_zones(RES* ssl, struct auth_zones* az)
2735 {
2736         struct auth_zone* z;
2737         char buf[257], buf2[256];
2738         lock_rw_rdlock(&az->lock);
2739         RBTREE_FOR(z, struct auth_zone*, &az->ztree) {
2740                 lock_rw_rdlock(&z->lock);
2741                 dname_str(z->name, buf);
2742                 if(z->zone_expired)
2743                         snprintf(buf2, sizeof(buf2), "expired");
2744                 else {
2745                         uint32_t serial = 0;
2746                         if(auth_zone_get_serial(z, &serial))
2747                                 snprintf(buf2, sizeof(buf2), "serial %u",
2748                                         (unsigned)serial);
2749                         else    snprintf(buf2, sizeof(buf2), "no serial");
2750                 }
2751                 if(!ssl_printf(ssl, "%s\t%s\n", buf, buf2)) {
2752                         /* failure to print */
2753                         lock_rw_unlock(&z->lock);
2754                         lock_rw_unlock(&az->lock);
2755                         return;
2756                 }
2757                 lock_rw_unlock(&z->lock);
2758         }
2759         lock_rw_unlock(&az->lock);
2760 }
2761
2762 /** do the list_local_zones command */
2763 static void
2764 do_list_local_zones(RES* ssl, struct local_zones* zones)
2765 {
2766         struct local_zone* z;
2767         char buf[257];
2768         lock_rw_rdlock(&zones->lock);
2769         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2770                 lock_rw_rdlock(&z->lock);
2771                 dname_str(z->name, buf);
2772                 if(!ssl_printf(ssl, "%s %s\n", buf,
2773                         local_zone_type2str(z->type))) {
2774                         /* failure to print */
2775                         lock_rw_unlock(&z->lock);
2776                         lock_rw_unlock(&zones->lock);
2777                         return;
2778                 }
2779                 lock_rw_unlock(&z->lock);
2780         }
2781         lock_rw_unlock(&zones->lock);
2782 }
2783
2784 /** do the list_local_data command */
2785 static void
2786 do_list_local_data(RES* ssl, struct worker* worker, struct local_zones* zones)
2787 {
2788         struct local_zone* z;
2789         struct local_data* d;
2790         struct local_rrset* p;
2791         char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
2792         size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
2793         lock_rw_rdlock(&zones->lock);
2794         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2795                 lock_rw_rdlock(&z->lock);
2796                 RBTREE_FOR(d, struct local_data*, &z->data) {
2797                         for(p = d->rrsets; p; p = p->next) {
2798                                 struct packed_rrset_data* d =
2799                                         (struct packed_rrset_data*)p->rrset->entry.data;
2800                                 size_t i;
2801                                 for(i=0; i<d->count + d->rrsig_count; i++) {
2802                                         if(!packed_rr_to_string(p->rrset, i,
2803                                                 0, s, slen)) {
2804                                                 if(!ssl_printf(ssl, "BADRR\n")) {
2805                                                         lock_rw_unlock(&z->lock);
2806                                                         lock_rw_unlock(&zones->lock);
2807                                                         return;
2808                                                 }
2809                                         }
2810                                         if(!ssl_printf(ssl, "%s\n", s)) {
2811                                                 lock_rw_unlock(&z->lock);
2812                                                 lock_rw_unlock(&zones->lock);
2813                                                 return;
2814                                         }
2815                                 }
2816                         }
2817                 }
2818                 lock_rw_unlock(&z->lock);
2819         }
2820         lock_rw_unlock(&zones->lock);
2821 }
2822
2823 /** do the view_list_local_zones command */
2824 static void
2825 do_view_list_local_zones(RES* ssl, struct worker* worker, char* arg)
2826 {
2827         struct view* v = views_find_view(worker->daemon->views,
2828                 arg, 0 /* get read lock*/);
2829         if(!v) {
2830                 ssl_printf(ssl,"no view with name: %s\n", arg);
2831                 return;
2832         }
2833         if(v->local_zones) {
2834                 do_list_local_zones(ssl, v->local_zones);
2835         }
2836         lock_rw_unlock(&v->lock);
2837 }
2838
2839 /** do the view_list_local_data command */
2840 static void
2841 do_view_list_local_data(RES* ssl, struct worker* worker, char* arg)
2842 {
2843         struct view* v = views_find_view(worker->daemon->views,
2844                 arg, 0 /* get read lock*/);
2845         if(!v) {
2846                 ssl_printf(ssl,"no view with name: %s\n", arg);
2847                 return;
2848         }
2849         if(v->local_zones) {
2850                 do_list_local_data(ssl, worker, v->local_zones);
2851         }
2852         lock_rw_unlock(&v->lock);
2853 }
2854
2855 /** struct for user arg ratelimit list */
2856 struct ratelimit_list_arg {
2857         /** the infra cache */
2858         struct infra_cache* infra;
2859         /** the SSL to print to */
2860         RES* ssl;
2861         /** all or only ratelimited */
2862         int all;
2863         /** current time */
2864         time_t now;
2865         /** if backoff is enabled */
2866         int backoff;
2867 };
2868
2869 #define ip_ratelimit_list_arg ratelimit_list_arg
2870
2871 /** list items in the ratelimit table */
2872 static void
2873 rate_list(struct lruhash_entry* e, void* arg)
2874 {
2875         struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg;
2876         struct rate_key* k = (struct rate_key*)e->key;
2877         struct rate_data* d = (struct rate_data*)e->data;
2878         char buf[257];
2879         int lim = infra_find_ratelimit(a->infra, k->name, k->namelen);
2880         int max = infra_rate_max(d, a->now, a->backoff);
2881         if(a->all == 0) {
2882                 if(max < lim)
2883                         return;
2884         }
2885         dname_str(k->name, buf);
2886         ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim);
2887 }
2888
2889 /** list items in the ip_ratelimit table */
2890 static void
2891 ip_rate_list(struct lruhash_entry* e, void* arg)
2892 {
2893         char ip[128];
2894         struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg;
2895         struct ip_rate_key* k = (struct ip_rate_key*)e->key;
2896         struct ip_rate_data* d = (struct ip_rate_data*)e->data;
2897         int lim = infra_ip_ratelimit;
2898         int max = infra_rate_max(d, a->now, a->backoff);
2899         if(a->all == 0) {
2900                 if(max < lim)
2901                         return;
2902         }
2903         addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip));
2904         ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim);
2905 }
2906
2907 /** do the ratelimit_list command */
2908 static void
2909 do_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2910 {
2911         struct ratelimit_list_arg a;
2912         a.all = 0;
2913         a.infra = worker->env.infra_cache;
2914         a.now = *worker->env.now;
2915         a.ssl = ssl;
2916         a.backoff = worker->env.cfg->ratelimit_backoff;
2917         arg = skipwhite(arg);
2918         if(strcmp(arg, "+a") == 0)
2919                 a.all = 1;
2920         if(a.infra->domain_rates==NULL ||
2921                 (a.all == 0 && infra_dp_ratelimit == 0))
2922                 return;
2923         slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a);
2924 }
2925
2926 /** do the ip_ratelimit_list command */
2927 static void
2928 do_ip_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2929 {
2930         struct ip_ratelimit_list_arg a;
2931         a.all = 0;
2932         a.infra = worker->env.infra_cache;
2933         a.now = *worker->env.now;
2934         a.ssl = ssl;
2935         a.backoff = worker->env.cfg->ip_ratelimit_backoff;
2936         arg = skipwhite(arg);
2937         if(strcmp(arg, "+a") == 0)
2938                 a.all = 1;
2939         if(a.infra->client_ip_rates==NULL ||
2940                 (a.all == 0 && infra_ip_ratelimit == 0))
2941                 return;
2942         slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a);
2943 }
2944
2945 /** do the rpz_enable/disable command */
2946 static void
2947 do_rpz_enable_disable(RES* ssl, struct worker* worker, char* arg, int enable) {
2948     size_t nmlen;
2949     int nmlabs;
2950     uint8_t *nm = NULL;
2951     struct auth_zones *az = worker->env.auth_zones;
2952     struct auth_zone *z = NULL;
2953     if (!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2954         return;
2955     if (az) {
2956         lock_rw_rdlock(&az->lock);
2957         z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2958         if (z) {
2959             lock_rw_wrlock(&z->lock);
2960         }
2961         lock_rw_unlock(&az->lock);
2962     }
2963     free(nm);
2964     if (!z) {
2965         (void) ssl_printf(ssl, "error no auth-zone %s\n", arg);
2966         return;
2967     }
2968     if (!z->rpz) {
2969         (void) ssl_printf(ssl, "error auth-zone %s not RPZ\n", arg);
2970         lock_rw_unlock(&z->lock);
2971         return;
2972     }
2973     if (enable) {
2974         rpz_enable(z->rpz);
2975     } else {
2976         rpz_disable(z->rpz);
2977     }
2978     lock_rw_unlock(&z->lock);
2979     send_ok(ssl);
2980 }
2981
2982 /** do the rpz_enable command */
2983 static void
2984 do_rpz_enable(RES* ssl, struct worker* worker, char* arg)
2985 {
2986     do_rpz_enable_disable(ssl, worker, arg, 1);
2987 }
2988
2989 /** do the rpz_disable command */
2990 static void
2991 do_rpz_disable(RES* ssl, struct worker* worker, char* arg)
2992 {
2993     do_rpz_enable_disable(ssl, worker, arg, 0);
2994 }
2995
2996 /** tell other processes to execute the command */
2997 static void
2998 distribute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd)
2999 {
3000         int i;
3001         if(!cmd || !ssl)
3002                 return;
3003         /* skip i=0 which is me */
3004         for(i=1; i<rc->worker->daemon->num; i++) {
3005                 worker_send_cmd(rc->worker->daemon->workers[i],
3006                         worker_cmd_remote);
3007                 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
3008                         (uint8_t*)cmd, strlen(cmd)+1, 0)) {
3009                         ssl_printf(ssl, "error could not distribute cmd\n");
3010                         return;
3011                 }
3012         }
3013 }
3014
3015 /** check for name with end-of-string, space or tab after it */
3016 static int
3017 cmdcmp(char* p, const char* cmd, size_t len)
3018 {
3019         return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
3020 }
3021
3022 /** execute a remote control command */
3023 static void
3024 execute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd,
3025         struct worker* worker)
3026 {
3027         char* p = skipwhite(cmd);
3028         /* compare command */
3029         if(cmdcmp(p, "stop", 4)) {
3030                 do_stop(ssl, worker);
3031                 return;
3032         } else if(cmdcmp(p, "reload", 6)) {
3033                 do_reload(ssl, worker);
3034                 return;
3035         } else if(cmdcmp(p, "stats_noreset", 13)) {
3036                 do_stats(ssl, worker, 0);
3037                 return;
3038         } else if(cmdcmp(p, "stats", 5)) {
3039                 do_stats(ssl, worker, 1);
3040                 return;
3041         } else if(cmdcmp(p, "status", 6)) {
3042                 do_status(ssl, worker);
3043                 return;
3044         } else if(cmdcmp(p, "dump_cache", 10)) {
3045                 (void)dump_cache(ssl, worker);
3046                 return;
3047         } else if(cmdcmp(p, "load_cache", 10)) {
3048                 if(load_cache(ssl, worker)) send_ok(ssl);
3049                 return;
3050         } else if(cmdcmp(p, "list_forwards", 13)) {
3051                 do_list_forwards(ssl, worker);
3052                 return;
3053         } else if(cmdcmp(p, "list_stubs", 10)) {
3054                 do_list_stubs(ssl, worker);
3055                 return;
3056         } else if(cmdcmp(p, "list_insecure", 13)) {
3057                 do_insecure_list(ssl, worker);
3058                 return;
3059         } else if(cmdcmp(p, "list_local_zones", 16)) {
3060                 do_list_local_zones(ssl, worker->daemon->local_zones);
3061                 return;
3062         } else if(cmdcmp(p, "list_local_data", 15)) {
3063                 do_list_local_data(ssl, worker, worker->daemon->local_zones);
3064                 return;
3065         } else if(cmdcmp(p, "view_list_local_zones", 21)) {
3066                 do_view_list_local_zones(ssl, worker, skipwhite(p+21));
3067                 return;
3068         } else if(cmdcmp(p, "view_list_local_data", 20)) {
3069                 do_view_list_local_data(ssl, worker, skipwhite(p+20));
3070                 return;
3071         } else if(cmdcmp(p, "ratelimit_list", 14)) {
3072                 do_ratelimit_list(ssl, worker, p+14);
3073                 return;
3074         } else if(cmdcmp(p, "ip_ratelimit_list", 17)) {
3075                 do_ip_ratelimit_list(ssl, worker, p+17);
3076                 return;
3077         } else if(cmdcmp(p, "list_auth_zones", 15)) {
3078                 do_list_auth_zones(ssl, worker->env.auth_zones);
3079                 return;
3080         } else if(cmdcmp(p, "auth_zone_reload", 16)) {
3081                 do_auth_zone_reload(ssl, worker, skipwhite(p+16));
3082                 return;
3083         } else if(cmdcmp(p, "auth_zone_transfer", 18)) {
3084                 do_auth_zone_transfer(ssl, worker, skipwhite(p+18));
3085                 return;
3086         } else if(cmdcmp(p, "stub_add", 8)) {
3087                 /* must always distribute this cmd */
3088                 if(rc) distribute_cmd(rc, ssl, cmd);
3089                 do_stub_add(ssl, worker, skipwhite(p+8));
3090                 return;
3091         } else if(cmdcmp(p, "stub_remove", 11)) {
3092                 /* must always distribute this cmd */
3093                 if(rc) distribute_cmd(rc, ssl, cmd);
3094                 do_stub_remove(ssl, worker, skipwhite(p+11));
3095                 return;
3096         } else if(cmdcmp(p, "forward_add", 11)) {
3097                 /* must always distribute this cmd */
3098                 if(rc) distribute_cmd(rc, ssl, cmd);
3099                 do_forward_add(ssl, worker, skipwhite(p+11));
3100                 return;
3101         } else if(cmdcmp(p, "forward_remove", 14)) {
3102                 /* must always distribute this cmd */
3103                 if(rc) distribute_cmd(rc, ssl, cmd);
3104                 do_forward_remove(ssl, worker, skipwhite(p+14));
3105                 return;
3106         } else if(cmdcmp(p, "insecure_add", 12)) {
3107                 /* must always distribute this cmd */
3108                 if(rc) distribute_cmd(rc, ssl, cmd);
3109                 do_insecure_add(ssl, worker, skipwhite(p+12));
3110                 return;
3111         } else if(cmdcmp(p, "insecure_remove", 15)) {
3112                 /* must always distribute this cmd */
3113                 if(rc) distribute_cmd(rc, ssl, cmd);
3114                 do_insecure_remove(ssl, worker, skipwhite(p+15));
3115                 return;
3116         } else if(cmdcmp(p, "forward", 7)) {
3117                 /* must always distribute this cmd */
3118                 if(rc) distribute_cmd(rc, ssl, cmd);
3119                 do_forward(ssl, worker, skipwhite(p+7));
3120                 return;
3121         } else if(cmdcmp(p, "flush_stats", 11)) {
3122                 /* must always distribute this cmd */
3123                 if(rc) distribute_cmd(rc, ssl, cmd);
3124                 do_flush_stats(ssl, worker);
3125                 return;
3126         } else if(cmdcmp(p, "flush_requestlist", 17)) {
3127                 /* must always distribute this cmd */
3128                 if(rc) distribute_cmd(rc, ssl, cmd);
3129                 do_flush_requestlist(ssl, worker);
3130                 return;
3131         } else if(cmdcmp(p, "lookup", 6)) {
3132                 do_lookup(ssl, worker, skipwhite(p+6));
3133                 return;
3134         }
3135
3136 #ifdef THREADS_DISABLED
3137         /* other processes must execute the command as well */
3138         /* commands that should not be distributed, returned above. */
3139         if(rc) { /* only if this thread is the master (rc) thread */
3140                 /* done before the code below, which may split the string */
3141                 distribute_cmd(rc, ssl, cmd);
3142         }
3143 #endif
3144         if(cmdcmp(p, "verbosity", 9)) {
3145                 do_verbosity(ssl, skipwhite(p+9));
3146         } else if(cmdcmp(p, "local_zone_remove", 17)) {
3147                 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3148         } else if(cmdcmp(p, "local_zones_remove", 18)) {
3149                 do_zones_remove(ssl, worker->daemon->local_zones);
3150         } else if(cmdcmp(p, "local_zone", 10)) {
3151                 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3152         } else if(cmdcmp(p, "local_zones", 11)) {
3153                 do_zones_add(ssl, worker->daemon->local_zones);
3154         } else if(cmdcmp(p, "local_data_remove", 17)) {
3155                 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3156         } else if(cmdcmp(p, "local_datas_remove", 18)) {
3157                 do_datas_remove(ssl, worker->daemon->local_zones);
3158         } else if(cmdcmp(p, "local_data", 10)) {
3159                 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3160         } else if(cmdcmp(p, "local_datas", 11)) {
3161                 do_datas_add(ssl, worker->daemon->local_zones);
3162         } else if(cmdcmp(p, "view_local_zone_remove", 22)) {
3163                 do_view_zone_remove(ssl, worker, skipwhite(p+22));
3164         } else if(cmdcmp(p, "view_local_zone", 15)) {
3165                 do_view_zone_add(ssl, worker, skipwhite(p+15));
3166         } else if(cmdcmp(p, "view_local_data_remove", 22)) {
3167                 do_view_data_remove(ssl, worker, skipwhite(p+22));
3168         } else if(cmdcmp(p, "view_local_datas_remove", 23)){
3169                 do_view_datas_remove(ssl, worker, skipwhite(p+23));
3170         } else if(cmdcmp(p, "view_local_data", 15)) {
3171                 do_view_data_add(ssl, worker, skipwhite(p+15));
3172         } else if(cmdcmp(p, "view_local_datas", 16)) {
3173                 do_view_datas_add(ssl, worker, skipwhite(p+16));
3174         } else if(cmdcmp(p, "flush_zone", 10)) {
3175                 do_flush_zone(ssl, worker, skipwhite(p+10));
3176         } else if(cmdcmp(p, "flush_type", 10)) {
3177                 do_flush_type(ssl, worker, skipwhite(p+10));
3178         } else if(cmdcmp(p, "flush_infra", 11)) {
3179                 do_flush_infra(ssl, worker, skipwhite(p+11));
3180         } else if(cmdcmp(p, "flush", 5)) {
3181                 do_flush_name(ssl, worker, skipwhite(p+5));
3182         } else if(cmdcmp(p, "dump_requestlist", 16)) {
3183                 do_dump_requestlist(ssl, worker);
3184         } else if(cmdcmp(p, "dump_infra", 10)) {
3185                 do_dump_infra(ssl, worker);
3186         } else if(cmdcmp(p, "log_reopen", 10)) {
3187                 do_log_reopen(ssl, worker);
3188         } else if(cmdcmp(p, "set_option", 10)) {
3189                 do_set_option(ssl, worker, skipwhite(p+10));
3190         } else if(cmdcmp(p, "get_option", 10)) {
3191                 do_get_option(ssl, worker, skipwhite(p+10));
3192         } else if(cmdcmp(p, "flush_bogus", 11)) {
3193                 do_flush_bogus(ssl, worker);
3194         } else if(cmdcmp(p, "flush_negative", 14)) {
3195                 do_flush_negative(ssl, worker);
3196     } else if(cmdcmp(p, "rpz_enable", 10)) {
3197         do_rpz_enable(ssl, worker, skipwhite(p+10));
3198     } else if(cmdcmp(p, "rpz_disable", 11)) {
3199         do_rpz_disable(ssl, worker, skipwhite(p+11));
3200         } else {
3201                 (void)ssl_printf(ssl, "error unknown command '%s'\n", p);
3202         }
3203 }
3204
3205 void
3206 daemon_remote_exec(struct worker* worker)
3207 {
3208         /* read the cmd string */
3209         uint8_t* msg = NULL;
3210         uint32_t len = 0;
3211         if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
3212                 log_err("daemon_remote_exec: tube_read_msg failed");
3213                 return;
3214         }
3215         verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
3216         execute_cmd(NULL, NULL, (char*)msg, worker);
3217         free(msg);
3218 }
3219
3220 /** handle remote control request */
3221 static void
3222 handle_req(struct daemon_remote* rc, struct rc_state* s, RES* res)
3223 {
3224         int r;
3225         char pre[10];
3226         char magic[7];
3227         char buf[1024];
3228 #ifdef USE_WINSOCK
3229         /* makes it possible to set the socket blocking again. */
3230         /* basically removes it from winsock_event ... */
3231         WSAEventSelect(s->c->fd, NULL, 0);
3232 #endif
3233         fd_set_block(s->c->fd);
3234
3235         /* try to read magic UBCT[version]_space_ string */
3236         if(res->ssl) {
3237                 ERR_clear_error();
3238                 if((r=SSL_read(res->ssl, magic, (int)sizeof(magic)-1)) <= 0) {
3239                         if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN)
3240                                 return;
3241                         log_crypto_err("could not SSL_read");
3242                         return;
3243                 }
3244         } else {
3245                 while(1) {
3246                         ssize_t rr = recv(res->fd, magic, sizeof(magic)-1, 0);
3247                         if(rr <= 0) {
3248                                 if(rr == 0) return;
3249                                 if(errno == EINTR || errno == EAGAIN)
3250                                         continue;
3251                                 log_err("could not recv: %s", sock_strerror(errno));
3252                                 return;
3253                         }
3254                         r = (int)rr;
3255                         break;
3256                 }
3257         }
3258         magic[6] = 0;
3259         if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
3260                 verbose(VERB_QUERY, "control connection has bad magic string");
3261                 /* probably wrong tool connected, ignore it completely */
3262                 return;
3263         }
3264
3265         /* read the command line */
3266         if(!ssl_read_line(res, buf, sizeof(buf))) {
3267                 return;
3268         }
3269         snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
3270         if(strcmp(magic, pre) != 0) {
3271                 verbose(VERB_QUERY, "control connection had bad "
3272                         "version %s, cmd: %s", magic, buf);
3273                 ssl_printf(res, "error version mismatch\n");
3274                 return;
3275         }
3276         verbose(VERB_DETAIL, "control cmd: %s", buf);
3277
3278         /* figure out what to do */
3279         execute_cmd(rc, res, buf, rc->worker);
3280 }
3281
3282 /** handle SSL_do_handshake changes to the file descriptor to wait for later */
3283 static int
3284 remote_handshake_later(struct daemon_remote* rc, struct rc_state* s,
3285         struct comm_point* c, int r, int r2)
3286 {
3287         if(r2 == SSL_ERROR_WANT_READ) {
3288                 if(s->shake_state == rc_hs_read) {
3289                         /* try again later */
3290                         return 0;
3291                 }
3292                 s->shake_state = rc_hs_read;
3293                 comm_point_listen_for_rw(c, 1, 0);
3294                 return 0;
3295         } else if(r2 == SSL_ERROR_WANT_WRITE) {
3296                 if(s->shake_state == rc_hs_write) {
3297                         /* try again later */
3298                         return 0;
3299                 }
3300                 s->shake_state = rc_hs_write;
3301                 comm_point_listen_for_rw(c, 0, 1);
3302                 return 0;
3303         } else {
3304                 if(r == 0)
3305                         log_err("remote control connection closed prematurely");
3306                 log_addr(VERB_OPS, "failed connection from",
3307                         &s->c->repinfo.addr, s->c->repinfo.addrlen);
3308                 log_crypto_err("remote control failed ssl");
3309                 clean_point(rc, s);
3310         }
3311         return 0;
3312 }
3313
3314 int remote_control_callback(struct comm_point* c, void* arg, int err,
3315         struct comm_reply* ATTR_UNUSED(rep))
3316 {
3317         RES res;
3318         struct rc_state* s = (struct rc_state*)arg;
3319         struct daemon_remote* rc = s->rc;
3320         int r;
3321         if(err != NETEVENT_NOERROR) {
3322                 if(err==NETEVENT_TIMEOUT)
3323                         log_err("remote control timed out");
3324                 clean_point(rc, s);
3325                 return 0;
3326         }
3327         if(s->ssl) {
3328                 /* (continue to) setup the SSL connection */
3329                 ERR_clear_error();
3330                 r = SSL_do_handshake(s->ssl);
3331                 if(r != 1) {
3332                         int r2 = SSL_get_error(s->ssl, r);
3333                         return remote_handshake_later(rc, s, c, r, r2);
3334                 }
3335                 s->shake_state = rc_none;
3336         }
3337
3338         /* once handshake has completed, check authentication */
3339         if (!rc->use_cert) {
3340                 verbose(VERB_ALGO, "unauthenticated remote control connection");
3341         } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
3342 #ifdef HAVE_SSL_GET1_PEER_CERTIFICATE
3343                 X509* x = SSL_get1_peer_certificate(s->ssl);
3344 #else
3345                 X509* x = SSL_get_peer_certificate(s->ssl);
3346 #endif
3347                 if(!x) {
3348                         verbose(VERB_DETAIL, "remote control connection "
3349                                 "provided no client certificate");
3350                         clean_point(rc, s);
3351                         return 0;
3352                 }
3353                 verbose(VERB_ALGO, "remote control connection authenticated");
3354                 X509_free(x);
3355         } else {
3356                 verbose(VERB_DETAIL, "remote control connection failed to "
3357                         "authenticate with client certificate");
3358                 clean_point(rc, s);
3359                 return 0;
3360         }
3361
3362         /* if OK start to actually handle the request */
3363         res.ssl = s->ssl;
3364         res.fd = c->fd;
3365         handle_req(rc, s, &res);
3366
3367         verbose(VERB_ALGO, "remote control operation completed");
3368         clean_point(rc, s);
3369         return 0;
3370 }