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 SSLv3/TLS capable web browser.
  42  * The channel is secured using SSLv3 or 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 #include <ctype.h>
  50 #include "daemon/remote.h"
  51 #include "daemon/worker.h"
  52 #include "daemon/daemon.h"
  53 #include "daemon/stats.h"
  54 #include "daemon/cachedump.h"
  55 #include "util/log.h"
  56 #include "util/config_file.h"
  57 #include "util/net_help.h"
  58 #include "util/module.h"
  59 #include "services/listen_dnsport.h"
  60 #include "services/cache/rrset.h"
  61 #include "services/cache/infra.h"
  62 #include "services/mesh.h"
  63 #include "services/localzone.h"
  64 #include "util/storage/slabhash.h"
  65 #include "util/fptr_wlist.h"
  66 #include "util/data/dname.h"
  67 #include "validator/validator.h"
  68 #include "validator/val_kcache.h"
  69 #include "validator/val_kentry.h"
  70 #include "validator/val_anchor.h"
  71 #include "iterator/iterator.h"
  72 #include "iterator/iter_fwd.h"
  73 #include "iterator/iter_hints.h"
  74 #include "iterator/iter_delegpt.h"
  75 #include "services/outbound_list.h"
  76 #include "services/outside_network.h"
  77 #include "ldns/str2wire.h"
  78 #include "ldns/parseutil.h"
  79 #include "ldns/wire2str.h"
  80 #include "ldns/sbuffer.h"
  81
  82 #ifdef HAVE_SYS_TYPES_H
  83 #  include <sys/types.h>
  84 #endif
  85 #ifdef HAVE_NETDB_H
  86 #include <netdb.h>
  87 #endif
  88
  89 /* just for portability */
  90 #ifdef SQ
  91 #undef SQ
  92 #endif
  93
  94 /** what to put on statistics lines between var and value, ": " or "=" */
  95 #define SQ "="
  96 /** if true, inhibits a lot of =0 lines from the stats output */
  97 static const int inhibit_zero = 1;
  98
  99 /** subtract timers and the values do not overflow or become negative */
 100 static void
 101 timeval_subtract(struct timeval* d, const struct timeval* end,
 102         const struct timeval* start)
 103 {
 104 #ifndef S_SPLINT_S
 105         time_t end_usec = end->tv_usec;
 106         d->tv_sec = end->tv_sec - start->tv_sec;
 107         if(end_usec < start->tv_usec) {
 108                 end_usec += 1000000;
 109                 d->tv_sec--;
 110         }
 111         d->tv_usec = end_usec - start->tv_usec;
 112 #endif
 113 }
 114
 115 /** divide sum of timers to get average */
 116 static void
 117 timeval_divide(struct timeval* avg, const struct timeval* sum, size_t d)
 118 {
 119 #ifndef S_SPLINT_S
 120         size_t leftover;
 121         if(d == 0) {
 122                 avg->tv_sec = 0;
 123                 avg->tv_usec = 0;
 124                 return;
 125         }
 126         avg->tv_sec = sum->tv_sec / d;
 127         avg->tv_usec = sum->tv_usec / d;
 128         /* handle fraction from seconds divide */
 129         leftover = sum->tv_sec - avg->tv_sec*d;
 130         avg->tv_usec += (leftover*1000000)/d;
 131 #endif
 132 }
 133
 134 struct daemon_remote*
 135 daemon_remote_create(struct config_file* cfg)
 136 {
 137         char* s_cert;
 138         char* s_key;
 139         struct daemon_remote* rc = (struct daemon_remote*)calloc(1,
 140                 sizeof(*rc));
 141         if(!rc) {
 142                 log_err("out of memory in daemon_remote_create");
 143                 return NULL;
 144         }
 145         rc->max_active = 10;
 146
 147         if(!cfg->remote_control_enable) {
 148                 rc->ctx = NULL;
 149                 return rc;
 150         }
 151         rc->ctx = SSL_CTX_new(SSLv23_server_method());
 152         if(!rc->ctx) {
 153                 log_crypto_err("could not SSL_CTX_new");
 154                 free(rc);
 155                 return NULL;
 156         }
 157         /* no SSLv2 because has defects */
 158         if(!(SSL_CTX_set_options(rc->ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)){
 159                 log_crypto_err("could not set SSL_OP_NO_SSLv2");
 160                 daemon_remote_delete(rc);
 161                 return NULL;
 162         }
 163         s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
 164         s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
 165         if(!s_cert || !s_key) {
 166                 log_err("out of memory in remote control fname");
 167                 goto setup_error;
 168         }
 169         verbose(VERB_ALGO, "setup SSL certificates");
 170         if (!SSL_CTX_use_certificate_file(rc->ctx,s_cert,SSL_FILETYPE_PEM)) {
 171                 log_err("Error for server-cert-file: %s", s_cert);
 172                 log_crypto_err("Error in SSL_CTX use_certificate_file");
 173                 goto setup_error;
 174         }
 175         if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) {
 176                 log_err("Error for server-key-file: %s", s_key);
 177                 log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
 178                 goto setup_error;
 179         }
 180         if(!SSL_CTX_check_private_key(rc->ctx)) {
 181                 log_err("Error for server-key-file: %s", s_key);
 182                 log_crypto_err("Error in SSL_CTX check_private_key");
 183                 goto setup_error;
 184         }
 185         if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) {
 186                 log_crypto_err("Error setting up SSL_CTX verify locations");
 187         setup_error:
 188                 free(s_cert);
 189                 free(s_key);
 190                 daemon_remote_delete(rc);
 191                 return NULL;
 192         }
 193         SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert));
 194         SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL);
 195         free(s_cert);
 196         free(s_key);
 197
 198         return rc;
 199 }
 200
 201 void daemon_remote_clear(struct daemon_remote* rc)
 202 {
 203         struct rc_state* p, *np;
 204         if(!rc) return;
 205         /* but do not close the ports */
 206         listen_list_delete(rc->accept_list);
 207         rc->accept_list = NULL;
 208         /* do close these sockets */
 209         p = rc->busy_list;
 210         while(p) {
 211                 np = p->next;
 212                 if(p->ssl)
 213                         SSL_free(p->ssl);
 214                 comm_point_delete(p->c);
 215                 free(p);
 216                 p = np;
 217         }
 218         rc->busy_list = NULL;
 219         rc->active = 0;
 220         rc->worker = NULL;
 221 }
 222
 223 void daemon_remote_delete(struct daemon_remote* rc)
 224 {
 225         if(!rc) return;
 226         daemon_remote_clear(rc);
 227         if(rc->ctx) {
 228                 SSL_CTX_free(rc->ctx);
 229         }
 230         free(rc);
 231 }
 232
 233 /**
 234  * Add and open a new control port
 235  * @param ip: ip str
 236  * @param nr: port nr
 237  * @param list: list head
 238  * @param noproto_is_err: if lack of protocol support is an error.
 239  * @return false on failure.
 240  */
 241 static int
 242 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err)
 243 {
 244         struct addrinfo hints;
 245         struct addrinfo* res;
 246         struct listen_port* n;
 247         int noproto;
 248         int fd, r;
 249         char port[15];
 250         snprintf(port, sizeof(port), "%d", nr);
 251         port[sizeof(port)-1]=0;
 252         memset(&hints, 0, sizeof(hints));
 253         hints.ai_socktype = SOCK_STREAM;
 254         hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
 255         if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
 256 #ifdef USE_WINSOCK
 257                 if(!noproto_is_err && r == EAI_NONAME) {
 258                         /* tried to lookup the address as name */
 259                         return 1; /* return success, but do nothing */
 260                 }
 261 #endif /* USE_WINSOCK */
 262                 log_err("control interface %s:%s getaddrinfo: %s %s",
 263                         ip?ip:"default", port, gai_strerror(r),
 264 #ifdef EAI_SYSTEM
 265                         r==EAI_SYSTEM?(char*)strerror(errno):""
 266 #else
 267                         ""
 268 #endif
 269                         );
 270                 return 0;
 271         }
 272
 273         /* open fd */
 274         fd = create_tcp_accept_sock(res, 1, &noproto, 0);
 275         freeaddrinfo(res);
 276         if(fd == -1 && noproto) {
 277                 if(!noproto_is_err)
 278                         return 1; /* return success, but do nothing */
 279                 log_err("cannot open control interface %s %d : "
 280                         "protocol not supported", ip, nr);
 281                 return 0;
 282         }
 283         if(fd == -1) {
 284                 log_err("cannot open control interface %s %d", ip, nr);
 285                 return 0;
 286         }
 287
 288         /* alloc */
 289         n = (struct listen_port*)calloc(1, sizeof(*n));
 290         if(!n) {
 291 #ifndef USE_WINSOCK
 292                 close(fd);
 293 #else
 294                 closesocket(fd);
 295 #endif
 296                 log_err("out of memory");
 297                 return 0;
 298         }
 299         n->next = *list;
 300         *list = n;
 301         n->fd = fd;
 302         return 1;
 303 }
 304
 305 struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
 306 {
 307         struct listen_port* l = NULL;
 308         log_assert(cfg->remote_control_enable && cfg->control_port);
 309         if(cfg->control_ifs) {
 310                 struct config_strlist* p;
 311                 for(p = cfg->control_ifs; p; p = p->next) {
 312                         if(!add_open(p->str, cfg->control_port, &l, 1)) {
 313                                 listening_ports_free(l);
 314                                 return NULL;
 315                         }
 316                 }
 317         } else {
 318                 /* defaults */
 319                 if(cfg->do_ip6 &&
 320                         !add_open("::1", cfg->control_port, &l, 0)) {
 321                         listening_ports_free(l);
 322                         return NULL;
 323                 }
 324                 if(cfg->do_ip4 &&
 325                         !add_open("127.0.0.1", cfg->control_port, &l, 1)) {
 326                         listening_ports_free(l);
 327                         return NULL;
 328                 }
 329         }
 330         return l;
 331 }
 332
 333 /** open accept commpoint */
 334 static int
 335 accept_open(struct daemon_remote* rc, int fd)
 336 {
 337         struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
 338         if(!n) {
 339                 log_err("out of memory");
 340                 return 0;
 341         }
 342         n->next = rc->accept_list;
 343         rc->accept_list = n;
 344         /* open commpt */
 345         n->com = comm_point_create_raw(rc->worker->base, fd, 0,
 346                 &remote_accept_callback, rc);
 347         if(!n->com)
 348                 return 0;
 349         /* keep this port open, its fd is kept in the rc portlist */
 350         n->com->do_not_close = 1;
 351         return 1;
 352 }
 353
 354 int daemon_remote_open_accept(struct daemon_remote* rc,
 355         struct listen_port* ports, struct worker* worker)
 356 {
 357         struct listen_port* p;
 358         rc->worker = worker;
 359         for(p = ports; p; p = p->next) {
 360                 if(!accept_open(rc, p->fd)) {
 361                         log_err("could not create accept comm point");
 362                         return 0;
 363                 }
 364         }
 365         return 1;
 366 }
 367
 368 void daemon_remote_stop_accept(struct daemon_remote* rc)
 369 {
 370         struct listen_list* p;
 371         for(p=rc->accept_list; p; p=p->next) {
 372                 comm_point_stop_listening(p->com);
 373         }
 374 }
 375
 376 void daemon_remote_start_accept(struct daemon_remote* rc)
 377 {
 378         struct listen_list* p;
 379         for(p=rc->accept_list; p; p=p->next) {
 380                 comm_point_start_listening(p->com, -1, -1);
 381         }
 382 }
 383
 384 int remote_accept_callback(struct comm_point* c, void* arg, int err,
 385         struct comm_reply* ATTR_UNUSED(rep))
 386 {
 387         struct daemon_remote* rc = (struct daemon_remote*)arg;
 388         struct sockaddr_storage addr;
 389         socklen_t addrlen;
 390         int newfd;
 391         struct rc_state* n;
 392         if(err != NETEVENT_NOERROR) {
 393                 log_err("error %d on remote_accept_callback", err);
 394                 return 0;
 395         }
 396         /* perform the accept */
 397         newfd = comm_point_perform_accept(c, &addr, &addrlen);
 398         if(newfd == -1)
 399                 return 0;
 400         /* create new commpoint unless we are servicing already */
 401         if(rc->active >= rc->max_active) {
 402                 log_warn("drop incoming remote control: too many connections");
 403         close_exit:
 404 #ifndef USE_WINSOCK
 405                 close(newfd);
 406 #else
 407                 closesocket(newfd);
 408 #endif
 409                 return 0;
 410         }
 411
 412         /* setup commpoint to service the remote control command */
 413         n = (struct rc_state*)calloc(1, sizeof(*n));
 414         if(!n) {
 415                 log_err("out of memory");
 416                 goto close_exit;
 417         }
 418         /* start in reading state */
 419         n->c = comm_point_create_raw(rc->worker->base, newfd, 0,
 420                 &remote_control_callback, n);
 421         if(!n->c) {
 422                 log_err("out of memory");
 423                 free(n);
 424                 goto close_exit;
 425         }
 426         log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
 427         n->c->do_not_close = 0;
 428         comm_point_stop_listening(n->c);
 429         comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
 430         memcpy(&n->c->repinfo.addr, &addr, addrlen);
 431         n->c->repinfo.addrlen = addrlen;
 432         n->shake_state = rc_hs_read;
 433         n->ssl = SSL_new(rc->ctx);
 434         if(!n->ssl) {
 435                 log_crypto_err("could not SSL_new");
 436                 comm_point_delete(n->c);
 437                 free(n);
 438                 goto close_exit;
 439         }
 440         SSL_set_accept_state(n->ssl);
 441         (void)SSL_set_mode(n->ssl, SSL_MODE_AUTO_RETRY);
 442         if(!SSL_set_fd(n->ssl, newfd)) {
 443                 log_crypto_err("could not SSL_set_fd");
 444                 SSL_free(n->ssl);
 445                 comm_point_delete(n->c);
 446                 free(n);
 447                 goto close_exit;
 448         }
 449
 450         n->rc = rc;
 451         n->next = rc->busy_list;
 452         rc->busy_list = n;
 453         rc->active ++;
 454
 455         /* perform the first nonblocking read already, for windows,
 456          * so it can return wouldblock. could be faster too. */
 457         (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
 458         return 0;
 459 }
 460
 461 /** delete from list */
 462 static void
 463 state_list_remove_elem(struct rc_state** list, struct comm_point* c)
 464 {
 465         while(*list) {
 466                 if( (*list)->c == c) {
 467                         *list = (*list)->next;
 468                         return;
 469                 }
 470                 list = &(*list)->next;
 471         }
 472 }
 473
 474 /** decrease active count and remove commpoint from busy list */
 475 static void
 476 clean_point(struct daemon_remote* rc, struct rc_state* s)
 477 {
 478         state_list_remove_elem(&rc->busy_list, s->c);
 479         rc->active --;
 480         if(s->ssl) {
 481                 SSL_shutdown(s->ssl);
 482                 SSL_free(s->ssl);
 483         }
 484         comm_point_delete(s->c);
 485         free(s);
 486 }
 487
 488 int
 489 ssl_print_text(SSL* ssl, const char* text)
 490 {
 491         int r;
 492         if(!ssl)
 493                 return 0;
 494         ERR_clear_error();
 495         if((r=SSL_write(ssl, text, (int)strlen(text))) <= 0) {
 496                 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
 497                         verbose(VERB_QUERY, "warning, in SSL_write, peer "
 498                                 "closed connection");
 499                         return 0;
 500                 }
 501                 log_crypto_err("could not SSL_write");
 502                 return 0;
 503         }
 504         return 1;
 505 }
 506
 507 /** print text over the ssl connection */
 508 static int
 509 ssl_print_vmsg(SSL* ssl, const char* format, va_list args)
 510 {
 511         char msg[1024];
 512         vsnprintf(msg, sizeof(msg), format, args);
 513         return ssl_print_text(ssl, msg);
 514 }
 515
 516 /** printf style printing to the ssl connection */
 517 int ssl_printf(SSL* ssl, const char* format, ...)
 518 {
 519         va_list args;
 520         int ret;
 521         va_start(args, format);
 522         ret = ssl_print_vmsg(ssl, format, args);
 523         va_end(args);
 524         return ret;
 525 }
 526
 527 int
 528 ssl_read_line(SSL* ssl, char* buf, size_t max)
 529 {
 530         int r;
 531         size_t len = 0;
 532         if(!ssl)
 533                 return 0;
 534         while(len < max) {
 535                 ERR_clear_error();
 536                 if((r=SSL_read(ssl, buf+len, 1)) <= 0) {
 537                         if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
 538                                 buf[len] = 0;
 539                                 return 1;
 540                         }
 541                         log_crypto_err("could not SSL_read");
 542                         return 0;
 543                 }
 544                 if(buf[len] == '\n') {
 545                         /* return string without \n */
 546                         buf[len] = 0;
 547                         return 1;
 548                 }
 549                 len++;
 550         }
 551         buf[max-1] = 0;
 552         log_err("control line too long (%d): %s", (int)max, buf);
 553         return 0;
 554 }
 555
 556 /** skip whitespace, return new pointer into string */
 557 static char*
 558 skipwhite(char* str)
 559 {
 560         /* EOS \0 is not a space */
 561         while( isspace(*str) )
 562                 str++;
 563         return str;
 564 }
 565
 566 /** send the OK to the control client */
 567 static void send_ok(SSL* ssl)
 568 {
 569         (void)ssl_printf(ssl, "ok\n");
 570 }
 571
 572 /** do the stop command */
 573 static void
 574 do_stop(SSL* ssl, struct daemon_remote* rc)
 575 {
 576         rc->worker->need_to_exit = 1;
 577         comm_base_exit(rc->worker->base);
 578         send_ok(ssl);
 579 }
 580
 581 /** do the reload command */
 582 static void
 583 do_reload(SSL* ssl, struct daemon_remote* rc)
 584 {
 585         rc->worker->need_to_exit = 0;
 586         comm_base_exit(rc->worker->base);
 587         send_ok(ssl);
 588 }
 589
 590 /** do the verbosity command */
 591 static void
 592 do_verbosity(SSL* ssl, char* str)
 593 {
 594         int val = atoi(str);
 595         if(val == 0 && strcmp(str, "0") != 0) {
 596                 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
 597                 return;
 598         }
 599         verbosity = val;
 600         send_ok(ssl);
 601 }
 602
 603 /** print stats from statinfo */
 604 static int
 605 print_stats(SSL* ssl, const char* nm, struct stats_info* s)
 606 {
 607         struct timeval avg;
 608         if(!ssl_printf(ssl, "%s.num.queries"SQ"%u\n", nm,
 609                 (unsigned)s->svr.num_queries)) return 0;
 610         if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%u\n", nm,
 611                 (unsigned)(s->svr.num_queries
 612                         - s->svr.num_queries_missed_cache))) return 0;
 613         if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%u\n", nm,
 614                 (unsigned)s->svr.num_queries_missed_cache)) return 0;
 615         if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%u\n", nm,
 616                 (unsigned)s->svr.num_queries_prefetch)) return 0;
 617         if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%u\n", nm,
 618                 (unsigned)s->mesh_replies_sent)) return 0;
 619         if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
 620                 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
 621                         (double)s->svr.sum_query_list_size/
 622                         (s->svr.num_queries_missed_cache+
 623                         s->svr.num_queries_prefetch) : 0.0)) return 0;
 624         if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%u\n", nm,
 625                 (unsigned)s->svr.max_query_list_size)) return 0;
 626         if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%u\n", nm,
 627                 (unsigned)s->mesh_jostled)) return 0;
 628         if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%u\n", nm,
 629                 (unsigned)s->mesh_dropped)) return 0;
 630         if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%u\n", nm,
 631                 (unsigned)s->mesh_num_states)) return 0;
 632         if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%u\n", nm,
 633                 (unsigned)s->mesh_num_reply_states)) return 0;
 634         timeval_divide(&avg, &s->mesh_replies_sum_wait, s->mesh_replies_sent);
 635         if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
 636                 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
 637         if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm,
 638                 s->mesh_time_median)) return 0;
 639         return 1;
 640 }
 641
 642 /** print stats for one thread */
 643 static int
 644 print_thread_stats(SSL* ssl, int i, struct stats_info* s)
 645 {
 646         char nm[16];
 647         snprintf(nm, sizeof(nm), "thread%d", i);
 648         nm[sizeof(nm)-1]=0;
 649         return print_stats(ssl, nm, s);
 650 }
 651
 652 /** print long number */
 653 static int
 654 print_longnum(SSL* ssl, const char* desc, size_t x)
 655 {
 656         if(x > 1024*1024*1024) {
 657                 /* more than a Gb */
 658                 size_t front = x / (size_t)1000000;
 659                 size_t back = x % (size_t)1000000;
 660                 return ssl_printf(ssl, "%s%u%6.6u\n", desc,
 661                         (unsigned)front, (unsigned)back);
 662         } else {
 663                 return ssl_printf(ssl, "%s%u\n", desc, (unsigned)x);
 664         }
 665 }
 666
 667 /** print mem stats */
 668 static int
 669 print_mem(SSL* ssl, struct worker* worker, struct daemon* daemon)
 670 {
 671         int m;
 672         size_t msg, rrset, val, iter;
 673 #ifdef HAVE_SBRK
 674         extern void* unbound_start_brk;
 675         void* cur = sbrk(0);
 676         if(!print_longnum(ssl, "mem.total.sbrk"SQ,
 677                 (size_t)((char*)cur - (char*)unbound_start_brk))) return 0;
 678 #endif /* HAVE_SBRK */
 679         msg = slabhash_get_mem(daemon->env->msg_cache);
 680         rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
 681         val=0;
 682         iter=0;
 683         m = modstack_find(&worker->env.mesh->mods, "validator");
 684         if(m != -1) {
 685                 fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->
 686                         mods.mod[m]->get_mem));
 687                 val = (*worker->env.mesh->mods.mod[m]->get_mem)
 688                         (&worker->env, m);
 689         }
 690         m = modstack_find(&worker->env.mesh->mods, "iterator");
 691         if(m != -1) {
 692                 fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh->
 693                         mods.mod[m]->get_mem));
 694                 iter = (*worker->env.mesh->mods.mod[m]->get_mem)
 695                         (&worker->env, m);
 696         }
 697
 698         if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
 699                 return 0;
 700         if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
 701                 return 0;
 702         if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
 703                 return 0;
 704         if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
 705                 return 0;
 706         return 1;
 707 }
 708
 709 /** print uptime stats */
 710 static int
 711 print_uptime(SSL* ssl, struct worker* worker, int reset)
 712 {
 713         struct timeval now = *worker->env.now_tv;
 714         struct timeval up, dt;
 715         timeval_subtract(&up, &now, &worker->daemon->time_boot);
 716         timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
 717         if(reset)
 718                 worker->daemon->time_last_stat = now;
 719         if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n",
 720                 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
 721         if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n",
 722                 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
 723         if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n",
 724                 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
 725         return 1;
 726 }
 727
 728 /** print extended histogram */
 729 static int
 730 print_hist(SSL* ssl, struct stats_info* s)
 731 {
 732         struct timehist* hist;
 733         size_t i;
 734         hist = timehist_setup();
 735         if(!hist) {
 736                 log_err("out of memory");
 737                 return 0;
 738         }
 739         timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
 740         for(i=0; i<hist->num; i++) {
 741                 if(!ssl_printf(ssl,
 742                         "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%u\n",
 743                         (int)hist->buckets[i].lower.tv_sec,
 744                         (int)hist->buckets[i].lower.tv_usec,
 745                         (int)hist->buckets[i].upper.tv_sec,
 746                         (int)hist->buckets[i].upper.tv_usec,
 747                         (unsigned)hist->buckets[i].count)) {
 748                         timehist_delete(hist);
 749                         return 0;
 750                 }
 751         }
 752         timehist_delete(hist);
 753         return 1;
 754 }
 755
 756 /** print extended stats */
 757 static int
 758 print_ext(SSL* ssl, struct stats_info* s)
 759 {
 760         int i;
 761         char nm[16];
 762         const sldns_rr_descriptor* desc;
 763         const sldns_lookup_table* lt;
 764         /* TYPE */
 765         for(i=0; i<STATS_QTYPE_NUM; i++) {
 766                 if(inhibit_zero && s->svr.qtype[i] == 0)
 767                         continue;
 768                 desc = sldns_rr_descript((uint16_t)i);
 769                 if(desc && desc->_name) {
 770                         snprintf(nm, sizeof(nm), "%s", desc->_name);
 771                 } else if (i == LDNS_RR_TYPE_IXFR) {
 772                         snprintf(nm, sizeof(nm), "IXFR");
 773                 } else if (i == LDNS_RR_TYPE_AXFR) {
 774                         snprintf(nm, sizeof(nm), "AXFR");
 775                 } else if (i == LDNS_RR_TYPE_MAILA) {
 776                         snprintf(nm, sizeof(nm), "MAILA");
 777                 } else if (i == LDNS_RR_TYPE_MAILB) {
 778                         snprintf(nm, sizeof(nm), "MAILB");
 779                 } else if (i == LDNS_RR_TYPE_ANY) {
 780                         snprintf(nm, sizeof(nm), "ANY");
 781                 } else {
 782                         snprintf(nm, sizeof(nm), "TYPE%d", i);
 783                 }
 784                 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%u\n",
 785                         nm, (unsigned)s->svr.qtype[i])) return 0;
 786         }
 787         if(!inhibit_zero || s->svr.qtype_big) {
 788                 if(!ssl_printf(ssl, "num.query.type.other"SQ"%u\n",
 789                         (unsigned)s->svr.qtype_big)) return 0;
 790         }
 791         /* CLASS */
 792         for(i=0; i<STATS_QCLASS_NUM; i++) {
 793                 if(inhibit_zero && s->svr.qclass[i] == 0)
 794                         continue;
 795                 lt = sldns_lookup_by_id(sldns_rr_classes, i);
 796                 if(lt && lt->name) {
 797                         snprintf(nm, sizeof(nm), "%s", lt->name);
 798                 } else {
 799                         snprintf(nm, sizeof(nm), "CLASS%d", i);
 800                 }
 801                 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%u\n",
 802                         nm, (unsigned)s->svr.qclass[i])) return 0;
 803         }
 804         if(!inhibit_zero || s->svr.qclass_big) {
 805                 if(!ssl_printf(ssl, "num.query.class.other"SQ"%u\n",
 806                         (unsigned)s->svr.qclass_big)) return 0;
 807         }
 808         /* OPCODE */
 809         for(i=0; i<STATS_OPCODE_NUM; i++) {
 810                 if(inhibit_zero && s->svr.qopcode[i] == 0)
 811                         continue;
 812                 lt = sldns_lookup_by_id(sldns_opcodes, i);
 813                 if(lt && lt->name) {
 814                         snprintf(nm, sizeof(nm), "%s", lt->name);
 815                 } else {
 816                         snprintf(nm, sizeof(nm), "OPCODE%d", i);
 817                 }
 818                 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%u\n",
 819                         nm, (unsigned)s->svr.qopcode[i])) return 0;
 820         }
 821         /* transport */
 822         if(!ssl_printf(ssl, "num.query.tcp"SQ"%u\n",
 823                 (unsigned)s->svr.qtcp)) return 0;
 824         if(!ssl_printf(ssl, "num.query.ipv6"SQ"%u\n",
 825                 (unsigned)s->svr.qipv6)) return 0;
 826         /* flags */
 827         if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%u\n",
 828                 (unsigned)s->svr.qbit_QR)) return 0;
 829         if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%u\n",
 830                 (unsigned)s->svr.qbit_AA)) return 0;
 831         if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%u\n",
 832                 (unsigned)s->svr.qbit_TC)) return 0;
 833         if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%u\n",
 834                 (unsigned)s->svr.qbit_RD)) return 0;
 835         if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%u\n",
 836                 (unsigned)s->svr.qbit_RA)) return 0;
 837         if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%u\n",
 838                 (unsigned)s->svr.qbit_Z)) return 0;
 839         if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%u\n",
 840                 (unsigned)s->svr.qbit_AD)) return 0;
 841         if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%u\n",
 842                 (unsigned)s->svr.qbit_CD)) return 0;
 843         if(!ssl_printf(ssl, "num.query.edns.present"SQ"%u\n",
 844                 (unsigned)s->svr.qEDNS)) return 0;
 845         if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%u\n",
 846                 (unsigned)s->svr.qEDNS_DO)) return 0;
 847
 848         /* RCODE */
 849         for(i=0; i<STATS_RCODE_NUM; i++) {
 850                 if(inhibit_zero && s->svr.ans_rcode[i] == 0)
 851                         continue;
 852                 lt = sldns_lookup_by_id(sldns_rcodes, i);
 853                 if(lt && lt->name) {
 854                         snprintf(nm, sizeof(nm), "%s", lt->name);
 855                 } else {
 856                         snprintf(nm, sizeof(nm), "RCODE%d", i);
 857                 }
 858                 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%u\n",
 859                         nm, (unsigned)s->svr.ans_rcode[i])) return 0;
 860         }
 861         if(!inhibit_zero || s->svr.ans_rcode_nodata) {
 862                 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%u\n",
 863                         (unsigned)s->svr.ans_rcode_nodata)) return 0;
 864         }
 865         /* validation */
 866         if(!ssl_printf(ssl, "num.answer.secure"SQ"%u\n",
 867                 (unsigned)s->svr.ans_secure)) return 0;
 868         if(!ssl_printf(ssl, "num.answer.bogus"SQ"%u\n",
 869                 (unsigned)s->svr.ans_bogus)) return 0;
 870         if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%u\n",
 871                 (unsigned)s->svr.rrset_bogus)) return 0;
 872         /* threat detection */
 873         if(!ssl_printf(ssl, "unwanted.queries"SQ"%u\n",
 874                 (unsigned)s->svr.unwanted_queries)) return 0;
 875         if(!ssl_printf(ssl, "unwanted.replies"SQ"%u\n",
 876                 (unsigned)s->svr.unwanted_replies)) return 0;
 877         return 1;
 878 }
 879
 880 /** do the stats command */
 881 static void
 882 do_stats(SSL* ssl, struct daemon_remote* rc, int reset)
 883 {
 884         struct daemon* daemon = rc->worker->daemon;
 885         struct stats_info total;
 886         struct stats_info s;
 887         int i;
 888         log_assert(daemon->num > 0);
 889         /* gather all thread statistics in one place */
 890         for(i=0; i<daemon->num; i++) {
 891                 server_stats_obtain(rc->worker, daemon->workers[i], &s, reset);
 892                 if(!print_thread_stats(ssl, i, &s))
 893                         return;
 894                 if(i == 0)
 895                         total = s;
 896                 else    server_stats_add(&total, &s);
 897         }
 898         /* print the thread statistics */
 899         total.mesh_time_median /= (double)daemon->num;
 900         if(!print_stats(ssl, "total", &total))
 901                 return;
 902         if(!print_uptime(ssl, rc->worker, reset))
 903                 return;
 904         if(daemon->cfg->stat_extended) {
 905                 if(!print_mem(ssl, rc->worker, daemon))
 906                         return;
 907                 if(!print_hist(ssl, &total))
 908                         return;
 909                 if(!print_ext(ssl, &total))
 910                         return;
 911         }
 912 }
 913
 914 /** parse commandline argument domain name */
 915 static int
 916 parse_arg_name(SSL* ssl, char* str, uint8_t** res, size_t* len, int* labs)
 917 {
 918         uint8_t nm[LDNS_MAX_DOMAINLEN+1];
 919         size_t nmlen = sizeof(nm);
 920         int status;
 921         *res = NULL;
 922         *len = 0;
 923         *labs = 0;
 924         status = sldns_str2wire_dname_buf(str, nm, &nmlen);
 925         if(status != 0) {
 926                 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
 927                         LDNS_WIREPARSE_OFFSET(status),
 928                         sldns_get_errorstr_parse(status));
 929                 return 0;
 930         }
 931         *res = memdup(nm, nmlen);
 932         if(!*res) {
 933                 ssl_printf(ssl, "error out of memory\n");
 934                 return 0;
 935         }
 936         *labs = dname_count_size_labels(*res, len);
 937         return 1;
 938 }
 939
 940 /** find second argument, modifies string */
 941 static int
 942 find_arg2(SSL* ssl, char* arg, char** arg2)
 943 {
 944         char* as = strchr(arg, ' ');
 945         char* at = strchr(arg, '\t');
 946         if(as && at) {
 947                 if(at < as)
 948                         as = at;
 949                 as[0]=0;
 950                 *arg2 = skipwhite(as+1);
 951         } else if(as) {
 952                 as[0]=0;
 953                 *arg2 = skipwhite(as+1);
 954         } else if(at) {
 955                 at[0]=0;
 956                 *arg2 = skipwhite(at+1);
 957         } else {
 958                 ssl_printf(ssl, "error could not find next argument "
 959                         "after %s\n", arg);
 960                 return 0;
 961         }
 962         return 1;
 963 }
 964
 965 /** Add a new zone */
 966 static void
 967 do_zone_add(SSL* ssl, struct worker* worker, char* arg)
 968 {
 969         uint8_t* nm;
 970         int nmlabs;
 971         size_t nmlen;
 972         char* arg2;
 973         enum localzone_type t;
 974         struct local_zone* z;
 975         if(!find_arg2(ssl, arg, &arg2))
 976                 return;
 977         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
 978                 return;
 979         if(!local_zone_str2type(arg2, &t)) {
 980                 ssl_printf(ssl, "error not a zone type. %s\n", arg2);
 981                 free(nm);
 982                 return;
 983         }
 984         lock_rw_wrlock(&worker->daemon->local_zones->lock);
 985         if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen,
 986                 nmlabs, LDNS_RR_CLASS_IN))) {
 987                 /* already present in tree */
 988                 lock_rw_wrlock(&z->lock);
 989                 z->type = t; /* update type anyway */
 990                 lock_rw_unlock(&z->lock);
 991                 free(nm);
 992                 lock_rw_unlock(&worker->daemon->local_zones->lock);
 993                 send_ok(ssl);
 994                 return;
 995         }
 996         if(!local_zones_add_zone(worker->daemon->local_zones, nm, nmlen,
 997                 nmlabs, LDNS_RR_CLASS_IN, t)) {
 998                 lock_rw_unlock(&worker->daemon->local_zones->lock);
 999                 ssl_printf(ssl, "error out of memory\n");
1000                 return;
1001         }
1002         lock_rw_unlock(&worker->daemon->local_zones->lock);
1003         send_ok(ssl);
1004 }
1005
1006 /** Remove a zone */
1007 static void
1008 do_zone_remove(SSL* ssl, struct worker* worker, char* arg)
1009 {
1010         uint8_t* nm;
1011         int nmlabs;
1012         size_t nmlen;
1013         struct local_zone* z;
1014         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1015                 return;
1016         lock_rw_wrlock(&worker->daemon->local_zones->lock);
1017         if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen,
1018                 nmlabs, LDNS_RR_CLASS_IN))) {
1019                 /* present in tree */
1020                 local_zones_del_zone(worker->daemon->local_zones, z);
1021         }
1022         lock_rw_unlock(&worker->daemon->local_zones->lock);
1023         free(nm);
1024         send_ok(ssl);
1025 }
1026
1027 /** Add new RR data */
1028 static void
1029 do_data_add(SSL* ssl, struct worker* worker, char* arg)
1030 {
1031         if(!local_zones_add_RR(worker->daemon->local_zones, arg)) {
1032                 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
1033                 return;
1034         }
1035         send_ok(ssl);
1036 }
1037
1038 /** Remove RR data */
1039 static void
1040 do_data_remove(SSL* ssl, struct worker* worker, char* arg)
1041 {
1042         uint8_t* nm;
1043         int nmlabs;
1044         size_t nmlen;
1045         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1046                 return;
1047         local_zones_del_data(worker->daemon->local_zones, nm,
1048                 nmlen, nmlabs, LDNS_RR_CLASS_IN);
1049         free(nm);
1050         send_ok(ssl);
1051 }
1052
1053 /** cache lookup of nameservers */
1054 static void
1055 do_lookup(SSL* ssl, struct worker* worker, char* arg)
1056 {
1057         uint8_t* nm;
1058         int nmlabs;
1059         size_t nmlen;
1060         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1061                 return;
1062         (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
1063         free(nm);
1064 }
1065
1066 /** flush something from rrset and msg caches */
1067 static void
1068 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
1069         uint16_t t, uint16_t c)
1070 {
1071         hashvalue_t h;
1072         struct query_info k;
1073         rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
1074         if(t == LDNS_RR_TYPE_SOA)
1075                 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
1076                         PACKED_RRSET_SOA_NEG);
1077         k.qname = nm;
1078         k.qname_len = nmlen;
1079         k.qtype = t;
1080         k.qclass = c;
1081         h = query_info_hash(&k);
1082         slabhash_remove(worker->env.msg_cache, h, &k);
1083 }
1084
1085 /** flush a type */
1086 static void
1087 do_flush_type(SSL* ssl, struct worker* worker, char* arg)
1088 {
1089         uint8_t* nm;
1090         int nmlabs;
1091         size_t nmlen;
1092         char* arg2;
1093         uint16_t t;
1094         if(!find_arg2(ssl, arg, &arg2))
1095                 return;
1096         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1097                 return;
1098         t = sldns_get_rr_type_by_name(arg2);
1099         do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
1100
1101         free(nm);
1102         send_ok(ssl);
1103 }
1104
1105 /** flush statistics */
1106 static void
1107 do_flush_stats(SSL* ssl, struct worker* worker)
1108 {
1109         worker_stats_clear(worker);
1110         send_ok(ssl);
1111 }
1112
1113 /**
1114  * Local info for deletion functions
1115  */
1116 struct del_info {
1117         /** worker */
1118         struct worker* worker;
1119         /** name to delete */
1120         uint8_t* name;
1121         /** length */
1122         size_t len;
1123         /** labels */
1124         int labs;
1125         /** now */
1126         time_t now;
1127         /** time to invalidate to */
1128         time_t expired;
1129         /** number of rrsets removed */
1130         size_t num_rrsets;
1131         /** number of msgs removed */
1132         size_t num_msgs;
1133         /** number of key entries removed */
1134         size_t num_keys;
1135         /** length of addr */
1136         socklen_t addrlen;
1137         /** socket address for host deletion */
1138         struct sockaddr_storage addr;
1139 };
1140
1141 /** callback to delete hosts in infra cache */
1142 static void
1143 infra_del_host(struct lruhash_entry* e, void* arg)
1144 {
1145         /* entry is locked */
1146         struct del_info* inf = (struct del_info*)arg;
1147         struct infra_key* k = (struct infra_key*)e->key;
1148         if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
1149                 struct infra_data* d = (struct infra_data*)e->data;
1150                 d->probedelay = 0;
1151                 d->timeout_A = 0;
1152                 d->timeout_AAAA = 0;
1153                 d->timeout_other = 0;
1154                 rtt_init(&d->rtt);
1155                 if(d->ttl >= inf->now) {
1156                         d->ttl = inf->expired;
1157                         inf->num_keys++;
1158                 }
1159         }
1160 }
1161
1162 /** flush infra cache */
1163 static void
1164 do_flush_infra(SSL* ssl, struct worker* worker, char* arg)
1165 {
1166         struct sockaddr_storage addr;
1167         socklen_t len;
1168         struct del_info inf;
1169         if(strcmp(arg, "all") == 0) {
1170                 slabhash_clear(worker->env.infra_cache->hosts);
1171                 send_ok(ssl);
1172                 return;
1173         }
1174         if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
1175                 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
1176                 return;
1177         }
1178         /* delete all entries from cache */
1179         /* what we do is to set them all expired */
1180         inf.worker = worker;
1181         inf.name = 0;
1182         inf.len = 0;
1183         inf.labs = 0;
1184         inf.now = *worker->env.now;
1185         inf.expired = *worker->env.now;
1186         inf.expired -= 3; /* handle 3 seconds skew between threads */
1187         inf.num_rrsets = 0;
1188         inf.num_msgs = 0;
1189         inf.num_keys = 0;
1190         inf.addrlen = len;
1191         memmove(&inf.addr, &addr, len);
1192         slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
1193                 &inf);
1194         send_ok(ssl);
1195 }
1196
1197 /** flush requestlist */
1198 static void
1199 do_flush_requestlist(SSL* ssl, struct worker* worker)
1200 {
1201         mesh_delete_all(worker->env.mesh);
1202         send_ok(ssl);
1203 }
1204
1205 /** callback to delete rrsets in a zone */
1206 static void
1207 zone_del_rrset(struct lruhash_entry* e, void* arg)
1208 {
1209         /* entry is locked */
1210         struct del_info* inf = (struct del_info*)arg;
1211         struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1212         if(dname_subdomain_c(k->rk.dname, inf->name)) {
1213                 struct packed_rrset_data* d =
1214                         (struct packed_rrset_data*)e->data;
1215                 if(d->ttl >= inf->now) {
1216                         d->ttl = inf->expired;
1217                         inf->num_rrsets++;
1218                 }
1219         }
1220 }
1221
1222 /** callback to delete messages in a zone */
1223 static void
1224 zone_del_msg(struct lruhash_entry* e, void* arg)
1225 {
1226         /* entry is locked */
1227         struct del_info* inf = (struct del_info*)arg;
1228         struct msgreply_entry* k = (struct msgreply_entry*)e->key;
1229         if(dname_subdomain_c(k->key.qname, inf->name)) {
1230                 struct reply_info* d = (struct reply_info*)e->data;
1231                 if(d->ttl >= inf->now) {
1232                         d->ttl = inf->expired;
1233                         inf->num_msgs++;
1234                 }
1235         }
1236 }
1237
1238 /** callback to delete keys in zone */
1239 static void
1240 zone_del_kcache(struct lruhash_entry* e, void* arg)
1241 {
1242         /* entry is locked */
1243         struct del_info* inf = (struct del_info*)arg;
1244         struct key_entry_key* k = (struct key_entry_key*)e->key;
1245         if(dname_subdomain_c(k->name, inf->name)) {
1246                 struct key_entry_data* d = (struct key_entry_data*)e->data;
1247                 if(d->ttl >= inf->now) {
1248                         d->ttl = inf->expired;
1249                         inf->num_keys++;
1250                 }
1251         }
1252 }
1253
1254 /** remove all rrsets and keys from zone from cache */
1255 static void
1256 do_flush_zone(SSL* ssl, struct worker* worker, char* arg)
1257 {
1258         uint8_t* nm;
1259         int nmlabs;
1260         size_t nmlen;
1261         struct del_info inf;
1262         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1263                 return;
1264         /* delete all RRs and key entries from zone */
1265         /* what we do is to set them all expired */
1266         inf.worker = worker;
1267         inf.name = nm;
1268         inf.len = nmlen;
1269         inf.labs = nmlabs;
1270         inf.now = *worker->env.now;
1271         inf.expired = *worker->env.now;
1272         inf.expired -= 3; /* handle 3 seconds skew between threads */
1273         inf.num_rrsets = 0;
1274         inf.num_msgs = 0;
1275         inf.num_keys = 0;
1276         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1277                 &zone_del_rrset, &inf);
1278
1279         slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
1280
1281         /* and validator cache */
1282         if(worker->env.key_cache) {
1283                 slabhash_traverse(worker->env.key_cache->slab, 1,
1284                         &zone_del_kcache, &inf);
1285         }
1286
1287         free(nm);
1288
1289         (void)ssl_printf(ssl, "ok removed %u rrsets, %u messages "
1290                 "and %u key entries\n", (unsigned)inf.num_rrsets,
1291                 (unsigned)inf.num_msgs, (unsigned)inf.num_keys);
1292 }
1293
1294 /** callback to delete bogus rrsets */
1295 static void
1296 bogus_del_rrset(struct lruhash_entry* e, void* arg)
1297 {
1298         /* entry is locked */
1299         struct del_info* inf = (struct del_info*)arg;
1300         struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1301         if(d->security == sec_status_bogus) {
1302                 d->ttl = inf->expired;
1303                 inf->num_rrsets++;
1304         }
1305 }
1306
1307 /** callback to delete bogus messages */
1308 static void
1309 bogus_del_msg(struct lruhash_entry* e, void* arg)
1310 {
1311         /* entry is locked */
1312         struct del_info* inf = (struct del_info*)arg;
1313         struct reply_info* d = (struct reply_info*)e->data;
1314         if(d->security == sec_status_bogus) {
1315                 d->ttl = inf->expired;
1316                 inf->num_msgs++;
1317         }
1318 }
1319
1320 /** callback to delete bogus keys */
1321 static void
1322 bogus_del_kcache(struct lruhash_entry* e, void* arg)
1323 {
1324         /* entry is locked */
1325         struct del_info* inf = (struct del_info*)arg;
1326         struct key_entry_data* d = (struct key_entry_data*)e->data;
1327         if(d->isbad) {
1328                 d->ttl = inf->expired;
1329                 inf->num_keys++;
1330         }
1331 }
1332
1333 /** remove all rrsets and keys from zone from cache */
1334 static void
1335 do_flush_bogus(SSL* ssl, struct worker* worker)
1336 {
1337         struct del_info inf;
1338         /* what we do is to set them all expired */
1339         inf.worker = worker;
1340         inf.now = *worker->env.now;
1341         inf.expired = *worker->env.now;
1342         inf.expired -= 3; /* handle 3 seconds skew between threads */
1343         inf.num_rrsets = 0;
1344         inf.num_msgs = 0;
1345         inf.num_keys = 0;
1346         slabhash_traverse(&worker->env.rrset_cache->table, 1,
1347                 &bogus_del_rrset, &inf);
1348
1349         slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
1350
1351         /* and validator cache */
1352         if(worker->env.key_cache) {
1353                 slabhash_traverse(worker->env.key_cache->slab, 1,
1354                         &bogus_del_kcache, &inf);
1355         }
1356
1357         (void)ssl_printf(ssl, "ok removed %u rrsets, %u messages "
1358                 "and %u key entries\n", (unsigned)inf.num_rrsets,
1359                 (unsigned)inf.num_msgs, (unsigned)inf.num_keys);
1360 }
1361
1362 /** remove name rrset from cache */
1363 static void
1364 do_flush_name(SSL* ssl, struct worker* w, char* arg)
1365 {
1366         uint8_t* nm;
1367         int nmlabs;
1368         size_t nmlen;
1369         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1370                 return;
1371         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
1372         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
1373         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
1374         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
1375         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
1376         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
1377         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
1378         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
1379         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
1380         do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
1381
1382         free(nm);
1383         send_ok(ssl);
1384 }
1385
1386 /** printout a delegation point info */
1387 static int
1388 ssl_print_name_dp(SSL* ssl, const char* str, uint8_t* nm, uint16_t dclass,
1389         struct delegpt* dp)
1390 {
1391         char buf[257];
1392         struct delegpt_ns* ns;
1393         struct delegpt_addr* a;
1394         int f = 0;
1395         if(str) { /* print header for forward, stub */
1396                 char* c = sldns_wire2str_class(dclass);
1397                 dname_str(nm, buf);
1398                 if(!ssl_printf(ssl, "%s %s %s: ", buf, (c?c:"CLASS??"), str)) {
1399                         free(c);
1400                         return 0;
1401                 }
1402                 free(c);
1403         }
1404         for(ns = dp->nslist; ns; ns = ns->next) {
1405                 dname_str(ns->name, buf);
1406                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1407                         return 0;
1408                 f = 1;
1409         }
1410         for(a = dp->target_list; a; a = a->next_target) {
1411                 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
1412                 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1413                         return 0;
1414                 f = 1;
1415         }
1416         return ssl_printf(ssl, "\n");
1417 }
1418
1419
1420 /** print root forwards */
1421 static int
1422 print_root_fwds(SSL* ssl, struct iter_forwards* fwds, uint8_t* root)
1423 {
1424         struct delegpt* dp;
1425         dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
1426         if(!dp)
1427                 return ssl_printf(ssl, "off (using root hints)\n");
1428         /* if dp is returned it must be the root */
1429         log_assert(query_dname_compare(dp->name, root)==0);
1430         return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
1431 }
1432
1433 /** parse args into delegpt */
1434 static struct delegpt*
1435 parse_delegpt(SSL* ssl, char* args, uint8_t* nm, int allow_names)
1436 {
1437         /* parse args and add in */
1438         char* p = args;
1439         char* todo;
1440         struct delegpt* dp = delegpt_create_mlc(nm);
1441         struct sockaddr_storage addr;
1442         socklen_t addrlen;
1443         if(!dp) {
1444                 (void)ssl_printf(ssl, "error out of memory\n");
1445                 return NULL;
1446         }
1447         while(p) {
1448                 todo = p;
1449                 p = strchr(p, ' '); /* find next spot, if any */
1450                 if(p) {
1451                         *p++ = 0;       /* end this spot */
1452                         p = skipwhite(p); /* position at next spot */
1453                 }
1454                 /* parse address */
1455                 if(!extstrtoaddr(todo, &addr, &addrlen)) {
1456                         if(allow_names) {
1457                                 uint8_t* n = NULL;
1458                                 size_t ln;
1459                                 int lb;
1460                                 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) {
1461                                         (void)ssl_printf(ssl, "error cannot "
1462                                                 "parse IP address or name "
1463                                                 "'%s'\n", todo);
1464                                         delegpt_free_mlc(dp);
1465                                         return NULL;
1466                                 }
1467                                 if(!delegpt_add_ns_mlc(dp, n, 0)) {
1468                                         (void)ssl_printf(ssl, "error out of memory\n");
1469                                         free(n);
1470                                         delegpt_free_mlc(dp);
1471                                         return NULL;
1472                                 }
1473                                 free(n);
1474
1475                         } else {
1476                                 (void)ssl_printf(ssl, "error cannot parse"
1477                                         " IP address '%s'\n", todo);
1478                                 delegpt_free_mlc(dp);
1479                                 return NULL;
1480                         }
1481                 } else {
1482                         /* add address */
1483                         if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0)) {
1484                                 (void)ssl_printf(ssl, "error out of memory\n");
1485                                 delegpt_free_mlc(dp);
1486                                 return NULL;
1487                         }
1488                 }
1489         }
1490         return dp;
1491 }
1492
1493 /** do the status command */
1494 static void
1495 do_forward(SSL* ssl, struct worker* worker, char* args)
1496 {
1497         struct iter_forwards* fwd = worker->env.fwds;
1498         uint8_t* root = (uint8_t*)"\000";
1499         if(!fwd) {
1500                 (void)ssl_printf(ssl, "error: structure not allocated\n");
1501                 return;
1502         }
1503         if(args == NULL || args[0] == 0) {
1504                 (void)print_root_fwds(ssl, fwd, root);
1505                 return;
1506         }
1507         /* set root forwards for this thread. since we are in remote control
1508          * the actual mesh is not running, so we can freely edit it. */
1509         /* delete all the existing queries first */
1510         mesh_delete_all(worker->env.mesh);
1511         if(strcmp(args, "off") == 0) {
1512                 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
1513         } else {
1514                 struct delegpt* dp;
1515                 if(!(dp = parse_delegpt(ssl, args, root, 0)))
1516                         return;
1517                 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
1518                         (void)ssl_printf(ssl, "error out of memory\n");
1519                         return;
1520                 }
1521         }
1522         send_ok(ssl);
1523 }
1524
1525 static int
1526 parse_fs_args(SSL* ssl, char* args, uint8_t** nm, struct delegpt** dp,
1527         int* insecure, int* prime)
1528 {
1529         char* zonename;
1530         char* rest;
1531         size_t nmlen;
1532         int nmlabs;
1533         /* parse all -x args */
1534         while(args[0] == '+') {
1535                 if(!find_arg2(ssl, args, &rest))
1536                         return 0;
1537                 while(*(++args) != 0) {
1538                         if(*args == 'i' && insecure)
1539                                 *insecure = 1;
1540                         else if(*args == 'p' && prime)
1541                                 *prime = 1;
1542                         else {
1543                                 (void)ssl_printf(ssl, "error: unknown option %s\n", args);
1544                                 return 0;
1545                         }
1546                 }
1547                 args = rest;
1548         }
1549         /* parse name */
1550         if(dp) {
1551                 if(!find_arg2(ssl, args, &rest))
1552                         return 0;
1553                 zonename = args;
1554                 args = rest;
1555         } else  zonename = args;
1556         if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
1557                 return 0;
1558
1559         /* parse dp */
1560         if(dp) {
1561                 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) {
1562                         free(*nm);
1563                         return 0;
1564                 }
1565         }
1566         return 1;
1567 }
1568
1569 /** do the forward_add command */
1570 static void
1571 do_forward_add(SSL* ssl, struct worker* worker, char* args)
1572 {
1573         struct iter_forwards* fwd = worker->env.fwds;
1574         int insecure = 0;
1575         uint8_t* nm = NULL;
1576         struct delegpt* dp = NULL;
1577         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
1578                 return;
1579         if(insecure && worker->env.anchors) {
1580                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
1581                         nm)) {
1582                         (void)ssl_printf(ssl, "error out of memory\n");
1583                         delegpt_free_mlc(dp);
1584                         free(nm);
1585                         return;
1586                 }
1587         }
1588         if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
1589                 (void)ssl_printf(ssl, "error out of memory\n");
1590                 free(nm);
1591                 return;
1592         }
1593         free(nm);
1594         send_ok(ssl);
1595 }
1596
1597 /** do the forward_remove command */
1598 static void
1599 do_forward_remove(SSL* ssl, struct worker* worker, char* args)
1600 {
1601         struct iter_forwards* fwd = worker->env.fwds;
1602         int insecure = 0;
1603         uint8_t* nm = NULL;
1604         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
1605                 return;
1606         if(insecure && worker->env.anchors)
1607                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
1608                         nm);
1609         forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
1610         free(nm);
1611         send_ok(ssl);
1612 }
1613
1614 /** do the stub_add command */
1615 static void
1616 do_stub_add(SSL* ssl, struct worker* worker, char* args)
1617 {
1618         struct iter_forwards* fwd = worker->env.fwds;
1619         int insecure = 0, prime = 0;
1620         uint8_t* nm = NULL;
1621         struct delegpt* dp = NULL;
1622         if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
1623                 return;
1624         if(insecure && worker->env.anchors) {
1625                 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
1626                         nm)) {
1627                         (void)ssl_printf(ssl, "error out of memory\n");
1628                         delegpt_free_mlc(dp);
1629                         free(nm);
1630                         return;
1631                 }
1632         }
1633         if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
1634                 if(insecure && worker->env.anchors)
1635                         anchors_delete_insecure(worker->env.anchors,
1636                                 LDNS_RR_CLASS_IN, nm);
1637                 (void)ssl_printf(ssl, "error out of memory\n");
1638                 delegpt_free_mlc(dp);
1639                 free(nm);
1640                 return;
1641         }
1642         if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
1643                 (void)ssl_printf(ssl, "error out of memory\n");
1644                 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
1645                 if(insecure && worker->env.anchors)
1646                         anchors_delete_insecure(worker->env.anchors,
1647                                 LDNS_RR_CLASS_IN, nm);
1648                 free(nm);
1649                 return;
1650         }
1651         free(nm);
1652         send_ok(ssl);
1653 }
1654
1655 /** do the stub_remove command */
1656 static void
1657 do_stub_remove(SSL* ssl, struct worker* worker, char* args)
1658 {
1659         struct iter_forwards* fwd = worker->env.fwds;
1660         int insecure = 0;
1661         uint8_t* nm = NULL;
1662         if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
1663                 return;
1664         if(insecure && worker->env.anchors)
1665                 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
1666                         nm);
1667         forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
1668         hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
1669         free(nm);
1670         send_ok(ssl);
1671 }
1672
1673 /** do the insecure_add command */
1674 static void
1675 do_insecure_add(SSL* ssl, struct worker* worker, char* arg)
1676 {
1677         size_t nmlen;
1678         int nmlabs;
1679         uint8_t* nm = NULL;
1680         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1681                 return;
1682         if(worker->env.anchors) {
1683                 if(!anchors_add_insecure(worker->env.anchors,
1684                         LDNS_RR_CLASS_IN, nm)) {
1685                         (void)ssl_printf(ssl, "error out of memory\n");
1686                         free(nm);
1687                         return;
1688                 }
1689         }
1690         free(nm);
1691         send_ok(ssl);
1692 }
1693
1694 /** do the insecure_remove command */
1695 static void
1696 do_insecure_remove(SSL* ssl, struct worker* worker, char* arg)
1697 {
1698         size_t nmlen;
1699         int nmlabs;
1700         uint8_t* nm = NULL;
1701         if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1702                 return;
1703         if(worker->env.anchors)
1704                 anchors_delete_insecure(worker->env.anchors,
1705                         LDNS_RR_CLASS_IN, nm);
1706         free(nm);
1707         send_ok(ssl);
1708 }
1709
1710 /** do the status command */
1711 static void
1712 do_status(SSL* ssl, struct worker* worker)
1713 {
1714         int i;
1715         time_t uptime;
1716         if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
1717                 return;
1718         if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
1719                 return;
1720         if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
1721                 return;
1722         if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
1723                 return;
1724         for(i=0; i<worker->daemon->mods.num; i++) {
1725                 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
1726                         return;
1727         }
1728         if(!ssl_printf(ssl, " ]\n"))
1729                 return;
1730         uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
1731         if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
1732                 return;
1733         if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
1734                 (int)getpid()))
1735                 return;
1736 }
1737
1738 /** get age for the mesh state */
1739 static void
1740 get_mesh_age(struct mesh_state* m, char* buf, size_t len,
1741         struct module_env* env)
1742 {
1743         if(m->reply_list) {
1744                 struct timeval d;
1745                 struct mesh_reply* r = m->reply_list;
1746                 /* last reply is the oldest */
1747                 while(r && r->next)
1748                         r = r->next;
1749                 timeval_subtract(&d, env->now_tv, &r->start_time);
1750                 snprintf(buf, len, ARG_LL "d.%6.6d",
1751                         (long long)d.tv_sec, (int)d.tv_usec);
1752         } else {
1753                 snprintf(buf, len, "-");
1754         }
1755 }
1756
1757 /** get status of a mesh state */
1758 static void
1759 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m,
1760         char* buf, size_t len)
1761 {
1762         enum module_ext_state s = m->s.ext_state[m->s.curmod];
1763         const char *modname = mesh->mods.mod[m->s.curmod]->name;
1764         size_t l;
1765         if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
1766                 m->s.minfo[m->s.curmod]) {
1767                 /* break into iterator to find out who its waiting for */
1768                 struct iter_qstate* qstate = (struct iter_qstate*)
1769                         m->s.minfo[m->s.curmod];
1770                 struct outbound_list* ol = &qstate->outlist;
1771                 struct outbound_entry* e;
1772                 snprintf(buf, len, "%s wait for", modname);
1773                 l = strlen(buf);
1774                 buf += l; len -= l;
1775                 if(ol->first == NULL)
1776                         snprintf(buf, len, " (empty_list)");
1777                 for(e = ol->first; e; e = e->next) {
1778                         snprintf(buf, len, " ");
1779                         l = strlen(buf);
1780                         buf += l; len -= l;
1781                         addr_to_str(&e->qsent->addr, e->qsent->addrlen,
1782                                 buf, len);
1783                         l = strlen(buf);
1784                         buf += l; len -= l;
1785                 }
1786         } else if(s == module_wait_subquery) {
1787                 /* look in subs from mesh state to see what */
1788                 char nm[257];
1789                 struct mesh_state_ref* sub;
1790                 snprintf(buf, len, "%s wants", modname);
1791                 l = strlen(buf);
1792                 buf += l; len -= l;
1793                 if(m->sub_set.count == 0)
1794                         snprintf(buf, len, " (empty_list)");
1795                 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
1796                         char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
1797                         char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
1798                         dname_str(sub->s->s.qinfo.qname, nm);
1799                         snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
1800                                 (c?c:"CLASS??"), nm);
1801                         l = strlen(buf);
1802                         buf += l; len -= l;
1803                         free(t);
1804                         free(c);
1805                 }
1806         } else {
1807                 snprintf(buf, len, "%s is %s", modname, strextstate(s));
1808         }
1809 }
1810
1811 /** do the dump_requestlist command */
1812 static void
1813 do_dump_requestlist(SSL* ssl, struct worker* worker)
1814 {
1815         struct mesh_area* mesh;
1816         struct mesh_state* m;
1817         int num = 0;
1818         char buf[257];
1819         char timebuf[32];
1820         char statbuf[10240];
1821         if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
1822                 return;
1823         if(!ssl_printf(ssl, "#   type cl name    seconds    module status\n"))
1824                 return;
1825         /* show worker mesh contents */
1826         mesh = worker->env.mesh;
1827         if(!mesh) return;
1828         RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
1829                 char* t = sldns_wire2str_type(m->s.qinfo.qtype);
1830                 char* c = sldns_wire2str_class(m->s.qinfo.qclass);
1831                 dname_str(m->s.qinfo.qname, buf);
1832                 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
1833                 get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
1834                 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n",
1835                         num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
1836                         statbuf)) {
1837                         free(t);
1838                         free(c);
1839                         return;
1840                 }
1841                 num++;
1842                 free(t);
1843                 free(c);
1844         }
1845 }
1846
1847 /** structure for argument data for dump infra host */
1848 struct infra_arg {
1849         /** the infra cache */
1850         struct infra_cache* infra;
1851         /** the SSL connection */
1852         SSL* ssl;
1853         /** the time now */
1854         time_t now;
1855 };
1856
1857 /** callback for every host element in the infra cache */
1858 static void
1859 dump_infra_host(struct lruhash_entry* e, void* arg)
1860 {
1861         struct infra_arg* a = (struct infra_arg*)arg;
1862         struct infra_key* k = (struct infra_key*)e->key;
1863         struct infra_data* d = (struct infra_data*)e->data;
1864         char ip_str[1024];
1865         char name[257];
1866         addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
1867         dname_str(k->zonename, name);
1868         /* skip expired stuff (only backed off) */
1869         if(d->ttl < a->now) {
1870                 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
1871                         if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
1872                                 name, d->rtt.rto)) return;
1873                 }
1874                 return;
1875         }
1876         if(!ssl_printf(a->ssl, "%s %s ttl %d ping %d var %d rtt %d rto %d "
1877                 "tA %d tAAAA %d tother %d "
1878                 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
1879                 "other %d\n", ip_str, name, (int)(d->ttl - a->now),
1880                 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
1881                 d->timeout_A, d->timeout_AAAA, d->timeout_other,
1882                 (int)d->edns_lame_known, (int)d->edns_version,
1883                 (int)(a->now<d->probedelay?d->probedelay-a->now:0),
1884                 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
1885                 (int)d->lame_other))
1886                 return;
1887 }
1888
1889 /** do the dump_infra command */
1890 static void
1891 do_dump_infra(SSL* ssl, struct worker* worker)
1892 {
1893         struct infra_arg arg;
1894         arg.infra = worker->env.infra_cache;
1895         arg.ssl = ssl;
1896         arg.now = *worker->env.now;
1897         slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
1898 }
1899
1900 /** do the log_reopen command */
1901 static void
1902 do_log_reopen(SSL* ssl, struct worker* worker)
1903 {
1904         struct config_file* cfg = worker->env.cfg;
1905         send_ok(ssl);
1906         log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
1907 }
1908
1909 /** do the set_option command */
1910 static void
1911 do_set_option(SSL* ssl, struct worker* worker, char* arg)
1912 {
1913         char* arg2;
1914         if(!find_arg2(ssl, arg, &arg2))
1915                 return;
1916         if(!config_set_option(worker->env.cfg, arg, arg2)) {
1917                 (void)ssl_printf(ssl, "error setting option\n");
1918                 return;
1919         }
1920         send_ok(ssl);
1921 }
1922
1923 /* routine to printout option values over SSL */
1924 void remote_get_opt_ssl(char* line, void* arg)
1925 {
1926         SSL* ssl = (SSL*)arg;
1927         (void)ssl_printf(ssl, "%s\n", line);
1928 }
1929
1930 /** do the get_option command */
1931 static void
1932 do_get_option(SSL* ssl, struct worker* worker, char* arg)
1933 {
1934         int r;
1935         r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
1936         if(!r) {
1937                 (void)ssl_printf(ssl, "error unknown option\n");
1938                 return;
1939         }
1940 }
1941
1942 /** do the list_forwards command */
1943 static void
1944 do_list_forwards(SSL* ssl, struct worker* worker)
1945 {
1946         /* since its a per-worker structure no locks needed */
1947         struct iter_forwards* fwds = worker->env.fwds;
1948         struct iter_forward_zone* z;
1949         RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
1950                 if(!z->dp) continue; /* skip empty marker for stub */
1951                 if(!ssl_print_name_dp(ssl, "forward", z->name, z->dclass,
1952                         z->dp))
1953                         return;
1954         }
1955 }
1956
1957 /** do the list_stubs command */
1958 static void
1959 do_list_stubs(SSL* ssl, struct worker* worker)
1960 {
1961         struct iter_hints_stub* z;
1962         RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
1963                 if(!ssl_print_name_dp(ssl,
1964                         z->noprime?"stub noprime":"stub prime", z->node.name,
1965                         z->node.dclass, z->dp))
1966                         return;
1967         }
1968 }
1969
1970 /** do the list_local_zones command */
1971 static void
1972 do_list_local_zones(SSL* ssl, struct worker* worker)
1973 {
1974         struct local_zones* zones = worker->daemon->local_zones;
1975         struct local_zone* z;
1976         char buf[257];
1977         lock_rw_rdlock(&zones->lock);
1978         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
1979                 lock_rw_rdlock(&z->lock);
1980                 dname_str(z->name, buf);
1981                 (void)ssl_printf(ssl, "%s %s\n", buf,
1982                         local_zone_type2str(z->type));
1983                 lock_rw_unlock(&z->lock);
1984         }
1985         lock_rw_unlock(&zones->lock);
1986 }
1987
1988 /** do the list_local_data command */
1989 static void
1990 do_list_local_data(SSL* ssl, struct worker* worker)
1991 {
1992         struct local_zones* zones = worker->daemon->local_zones;
1993         struct local_zone* z;
1994         struct local_data* d;
1995         struct local_rrset* p;
1996         char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
1997         size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
1998         lock_rw_rdlock(&zones->lock);
1999         RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2000                 lock_rw_rdlock(&z->lock);
2001                 RBTREE_FOR(d, struct local_data*, &z->data) {
2002                         for(p = d->rrsets; p; p = p->next) {
2003                                 struct packed_rrset_data* d =
2004                                         (struct packed_rrset_data*)p->rrset->entry.data;
2005                                 size_t i;
2006                                 for(i=0; i<d->count + d->rrsig_count; i++) {
2007                                         if(!packed_rr_to_string(p->rrset, i,
2008                                                 0, s, slen)) {
2009                                                 if(!ssl_printf(ssl, "BADRR\n"))
2010                                                         return;
2011                                         }
2012                                         if(!ssl_printf(ssl, "%s\n", s))
2013                                                 return;
2014                                 }
2015                         }
2016                 }
2017                 lock_rw_unlock(&z->lock);
2018         }
2019         lock_rw_unlock(&zones->lock);
2020 }
2021
2022 /** tell other processes to execute the command */
2023 static void
2024 distribute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd)
2025 {
2026         int i;
2027         if(!cmd || !ssl)
2028                 return;
2029         /* skip i=0 which is me */
2030         for(i=1; i<rc->worker->daemon->num; i++) {
2031                 worker_send_cmd(rc->worker->daemon->workers[i],
2032                         worker_cmd_remote);
2033                 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
2034                         (uint8_t*)cmd, strlen(cmd)+1, 0)) {
2035                         ssl_printf(ssl, "error could not distribute cmd\n");
2036                         return;
2037                 }
2038         }
2039 }
2040
2041 /** check for name with end-of-string, space or tab after it */
2042 static int
2043 cmdcmp(char* p, const char* cmd, size_t len)
2044 {
2045         return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
2046 }
2047
2048 /** execute a remote control command */
2049 static void
2050 execute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd,
2051         struct worker* worker)
2052 {
2053         char* p = skipwhite(cmd);
2054         /* compare command */
2055         if(cmdcmp(p, "stop", 4)) {
2056                 do_stop(ssl, rc);
2057                 return;
2058         } else if(cmdcmp(p, "reload", 6)) {
2059                 do_reload(ssl, rc);
2060                 return;
2061         } else if(cmdcmp(p, "stats_noreset", 13)) {
2062                 do_stats(ssl, rc, 0);
2063                 return;
2064         } else if(cmdcmp(p, "stats", 5)) {
2065                 do_stats(ssl, rc, 1);
2066                 return;
2067         } else if(cmdcmp(p, "status", 6)) {
2068                 do_status(ssl, worker);
2069                 return;
2070         } else if(cmdcmp(p, "dump_cache", 10)) {
2071                 (void)dump_cache(ssl, worker);
2072                 return;
2073         } else if(cmdcmp(p, "load_cache", 10)) {
2074                 if(load_cache(ssl, worker)) send_ok(ssl);
2075                 return;
2076         } else if(cmdcmp(p, "list_forwards", 13)) {
2077                 do_list_forwards(ssl, worker);
2078                 return;
2079         } else if(cmdcmp(p, "list_stubs", 10)) {
2080                 do_list_stubs(ssl, worker);
2081                 return;
2082         } else if(cmdcmp(p, "list_local_zones", 16)) {
2083                 do_list_local_zones(ssl, worker);
2084                 return;
2085         } else if(cmdcmp(p, "list_local_data", 15)) {
2086                 do_list_local_data(ssl, worker);
2087                 return;
2088         } else if(cmdcmp(p, "stub_add", 8)) {
2089                 /* must always distribute this cmd */
2090                 if(rc) distribute_cmd(rc, ssl, cmd);
2091                 do_stub_add(ssl, worker, skipwhite(p+8));
2092                 return;
2093         } else if(cmdcmp(p, "stub_remove", 11)) {
2094                 /* must always distribute this cmd */
2095                 if(rc) distribute_cmd(rc, ssl, cmd);
2096                 do_stub_remove(ssl, worker, skipwhite(p+11));
2097                 return;
2098         } else if(cmdcmp(p, "forward_add", 11)) {
2099                 /* must always distribute this cmd */
2100                 if(rc) distribute_cmd(rc, ssl, cmd);
2101                 do_forward_add(ssl, worker, skipwhite(p+11));
2102                 return;
2103         } else if(cmdcmp(p, "forward_remove", 14)) {
2104                 /* must always distribute this cmd */
2105                 if(rc) distribute_cmd(rc, ssl, cmd);
2106                 do_forward_remove(ssl, worker, skipwhite(p+14));
2107                 return;
2108         } else if(cmdcmp(p, "insecure_add", 12)) {
2109                 /* must always distribute this cmd */
2110                 if(rc) distribute_cmd(rc, ssl, cmd);
2111                 do_insecure_add(ssl, worker, skipwhite(p+12));
2112                 return;
2113         } else if(cmdcmp(p, "insecure_remove", 15)) {
2114                 /* must always distribute this cmd */
2115                 if(rc) distribute_cmd(rc, ssl, cmd);
2116                 do_insecure_remove(ssl, worker, skipwhite(p+15));
2117                 return;
2118         } else if(cmdcmp(p, "forward", 7)) {
2119                 /* must always distribute this cmd */
2120                 if(rc) distribute_cmd(rc, ssl, cmd);
2121                 do_forward(ssl, worker, skipwhite(p+7));
2122                 return;
2123         } else if(cmdcmp(p, "flush_stats", 11)) {
2124                 /* must always distribute this cmd */
2125                 if(rc) distribute_cmd(rc, ssl, cmd);
2126                 do_flush_stats(ssl, worker);
2127                 return;
2128         } else if(cmdcmp(p, "flush_requestlist", 17)) {
2129                 /* must always distribute this cmd */
2130                 if(rc) distribute_cmd(rc, ssl, cmd);
2131                 do_flush_requestlist(ssl, worker);
2132                 return;
2133         } else if(cmdcmp(p, "lookup", 6)) {
2134                 do_lookup(ssl, worker, skipwhite(p+6));
2135                 return;
2136         }
2137
2138 #ifdef THREADS_DISABLED
2139         /* other processes must execute the command as well */
2140         /* commands that should not be distributed, returned above. */
2141         if(rc) { /* only if this thread is the master (rc) thread */
2142                 /* done before the code below, which may split the string */
2143                 distribute_cmd(rc, ssl, cmd);
2144         }
2145 #endif
2146         if(cmdcmp(p, "verbosity", 9)) {
2147                 do_verbosity(ssl, skipwhite(p+9));
2148         } else if(cmdcmp(p, "local_zone_remove", 17)) {
2149                 do_zone_remove(ssl, worker, skipwhite(p+17));
2150         } else if(cmdcmp(p, "local_zone", 10)) {
2151                 do_zone_add(ssl, worker, skipwhite(p+10));
2152         } else if(cmdcmp(p, "local_data_remove", 17)) {
2153                 do_data_remove(ssl, worker, skipwhite(p+17));
2154         } else if(cmdcmp(p, "local_data", 10)) {
2155                 do_data_add(ssl, worker, skipwhite(p+10));
2156         } else if(cmdcmp(p, "flush_zone", 10)) {
2157                 do_flush_zone(ssl, worker, skipwhite(p+10));
2158         } else if(cmdcmp(p, "flush_type", 10)) {
2159                 do_flush_type(ssl, worker, skipwhite(p+10));
2160         } else if(cmdcmp(p, "flush_infra", 11)) {
2161                 do_flush_infra(ssl, worker, skipwhite(p+11));
2162         } else if(cmdcmp(p, "flush", 5)) {
2163                 do_flush_name(ssl, worker, skipwhite(p+5));
2164         } else if(cmdcmp(p, "dump_requestlist", 16)) {
2165                 do_dump_requestlist(ssl, worker);
2166         } else if(cmdcmp(p, "dump_infra", 10)) {
2167                 do_dump_infra(ssl, worker);
2168         } else if(cmdcmp(p, "log_reopen", 10)) {
2169                 do_log_reopen(ssl, worker);
2170         } else if(cmdcmp(p, "set_option", 10)) {
2171                 do_set_option(ssl, worker, skipwhite(p+10));
2172         } else if(cmdcmp(p, "get_option", 10)) {
2173                 do_get_option(ssl, worker, skipwhite(p+10));
2174         } else if(cmdcmp(p, "flush_bogus", 11)) {
2175                 do_flush_bogus(ssl, worker);
2176         } else {
2177                 (void)ssl_printf(ssl, "error unknown command '%s'\n", p);
2178         }
2179 }
2180
2181 void
2182 daemon_remote_exec(struct worker* worker)
2183 {
2184         /* read the cmd string */
2185         uint8_t* msg = NULL;
2186         uint32_t len = 0;
2187         if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
2188                 log_err("daemon_remote_exec: tube_read_msg failed");
2189                 return;
2190         }
2191         verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
2192         execute_cmd(NULL, NULL, (char*)msg, worker);
2193         free(msg);
2194 }
2195
2196 /** handle remote control request */
2197 static void
2198 handle_req(struct daemon_remote* rc, struct rc_state* s, SSL* ssl)
2199 {
2200         int r;
2201         char pre[10];
2202         char magic[7];
2203         char buf[1024];
2204 #ifdef USE_WINSOCK
2205         /* makes it possible to set the socket blocking again. */
2206         /* basically removes it from winsock_event ... */
2207         WSAEventSelect(s->c->fd, NULL, 0);
2208 #endif
2209         fd_set_block(s->c->fd);
2210
2211         /* try to read magic UBCT[version]_space_ string */
2212         ERR_clear_error();
2213         if((r=SSL_read(ssl, magic, (int)sizeof(magic)-1)) <= 0) {
2214                 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN)
2215                         return;
2216                 log_crypto_err("could not SSL_read");
2217                 return;
2218         }
2219         magic[6] = 0;
2220         if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
2221                 verbose(VERB_QUERY, "control connection has bad magic string");
2222                 /* probably wrong tool connected, ignore it completely */
2223                 return;
2224         }
2225
2226         /* read the command line */
2227         if(!ssl_read_line(ssl, buf, sizeof(buf))) {
2228                 return;
2229         }
2230         snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
2231         if(strcmp(magic, pre) != 0) {
2232                 verbose(VERB_QUERY, "control connection had bad "
2233                         "version %s, cmd: %s", magic, buf);
2234                 ssl_printf(ssl, "error version mismatch\n");
2235                 return;
2236         }
2237         verbose(VERB_DETAIL, "control cmd: %s", buf);
2238
2239         /* figure out what to do */
2240         execute_cmd(rc, ssl, buf, rc->worker);
2241 }
2242
2243 int remote_control_callback(struct comm_point* c, void* arg, int err,
2244         struct comm_reply* ATTR_UNUSED(rep))
2245 {
2246         struct rc_state* s = (struct rc_state*)arg;
2247         struct daemon_remote* rc = s->rc;
2248         int r;
2249         if(err != NETEVENT_NOERROR) {
2250                 if(err==NETEVENT_TIMEOUT)
2251                         log_err("remote control timed out");
2252                 clean_point(rc, s);
2253                 return 0;
2254         }
2255         /* (continue to) setup the SSL connection */
2256         ERR_clear_error();
2257         r = SSL_do_handshake(s->ssl);
2258         if(r != 1) {
2259                 int r2 = SSL_get_error(s->ssl, r);
2260                 if(r2 == SSL_ERROR_WANT_READ) {
2261                         if(s->shake_state == rc_hs_read) {
2262                                 /* try again later */
2263                                 return 0;
2264                         }
2265                         s->shake_state = rc_hs_read;
2266                         comm_point_listen_for_rw(c, 1, 0);
2267                         return 0;
2268                 } else if(r2 == SSL_ERROR_WANT_WRITE) {
2269                         if(s->shake_state == rc_hs_write) {
2270                                 /* try again later */
2271                                 return 0;
2272                         }
2273                         s->shake_state = rc_hs_write;
2274                         comm_point_listen_for_rw(c, 0, 1);
2275                         return 0;
2276                 } else {
2277                         if(r == 0)
2278                                 log_err("remote control connection closed prematurely");
2279                         log_addr(1, "failed connection from",
2280                                 &s->c->repinfo.addr, s->c->repinfo.addrlen);
2281                         log_crypto_err("remote control failed ssl");
2282                         clean_point(rc, s);
2283                         return 0;
2284                 }
2285         }
2286         s->shake_state = rc_none;
2287
2288         /* once handshake has completed, check authentication */
2289         if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
2290                 X509* x = SSL_get_peer_certificate(s->ssl);
2291                 if(!x) {
2292                         verbose(VERB_DETAIL, "remote control connection "
2293                                 "provided no client certificate");
2294                         clean_point(rc, s);
2295                         return 0;
2296                 }
2297                 verbose(VERB_ALGO, "remote control connection authenticated");
2298                 X509_free(x);
2299         } else {
2300                 verbose(VERB_DETAIL, "remote control connection failed to "
2301                         "authenticate with client certificate");
2302                 clean_point(rc, s);
2303                 return 0;
2304         }
2305
2306         /* if OK start to actually handle the request */
2307         handle_req(rc, s, s->ssl);
2308
2309         verbose(VERB_ALGO, "remote control operation completed");
2310         clean_point(rc, s);
2311         return 0;
2312 }