1 /* 2 * daemon/remote.c - remote control for the unbound daemon. 3 * 4 * Copyright (c) 2008, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file contains the remote control functionality for the daemon. 40 * The remote control can be performed using either the commandline 41 * unbound-control tool, or a TLS capable web browser. 42 * The channel is secured using TLSv1, and certificates. 43 * Both the server and the client(control tool) have their own keys. 44 */ 45 #include "config.h" 46 #ifdef HAVE_OPENSSL_ERR_H 47 #include <openssl/err.h> 48 #endif 49 #ifdef HAVE_OPENSSL_DH_H 50 #include <openssl/dh.h> 51 #endif 52 #ifdef HAVE_OPENSSL_BN_H 53 #include <openssl/bn.h> 54 #endif 55 56 #include <ctype.h> 57 #include "daemon/remote.h" 58 #include "daemon/worker.h" 59 #include "daemon/daemon.h" 60 #include "daemon/stats.h" 61 #include "daemon/cachedump.h" 62 #include "util/log.h" 63 #include "util/config_file.h" 64 #include "util/net_help.h" 65 #include "util/module.h" 66 #include "services/listen_dnsport.h" 67 #include "services/cache/rrset.h" 68 #include "services/cache/infra.h" 69 #include "services/mesh.h" 70 #include "services/localzone.h" 71 #include "services/authzone.h" 72 #include "services/rpz.h" 73 #include "util/storage/slabhash.h" 74 #include "util/fptr_wlist.h" 75 #include "util/data/dname.h" 76 #include "validator/validator.h" 77 #include "validator/val_kcache.h" 78 #include "validator/val_kentry.h" 79 #include "validator/val_anchor.h" 80 #include "iterator/iterator.h" 81 #include "iterator/iter_fwd.h" 82 #include "iterator/iter_hints.h" 83 #include "iterator/iter_delegpt.h" 84 #include "services/outbound_list.h" 85 #include "services/outside_network.h" 86 #include "sldns/str2wire.h" 87 #include "sldns/parseutil.h" 88 #include "sldns/wire2str.h" 89 #include "sldns/sbuffer.h" 90 91 #ifdef HAVE_SYS_TYPES_H 92 # include <sys/types.h> 93 #endif 94 #ifdef HAVE_SYS_STAT_H 95 #include <sys/stat.h> 96 #endif 97 #ifdef HAVE_NETDB_H 98 #include <netdb.h> 99 #endif 100 101 /* just for portability */ 102 #ifdef SQ 103 #undef SQ 104 #endif 105 106 /** what to put on statistics lines between var and value, ": " or "=" */ 107 #define SQ "=" 108 109 /** subtract timers and the values do not overflow or become negative */ 110 static void 111 timeval_subtract(struct timeval* d, const struct timeval* end, 112 const struct timeval* start) 113 { 114 #ifndef S_SPLINT_S 115 time_t end_usec = end->tv_usec; 116 d->tv_sec = end->tv_sec - start->tv_sec; 117 if(end_usec < start->tv_usec) { 118 end_usec += 1000000; 119 d->tv_sec--; 120 } 121 d->tv_usec = end_usec - start->tv_usec; 122 #endif 123 } 124 125 /** divide sum of timers to get average */ 126 static void 127 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d) 128 { 129 #ifndef S_SPLINT_S 130 size_t leftover; 131 if(d <= 0) { 132 avg->tv_sec = 0; 133 avg->tv_usec = 0; 134 return; 135 } 136 avg->tv_sec = sum->tv_sec / d; 137 avg->tv_usec = sum->tv_usec / d; 138 /* handle fraction from seconds divide */ 139 leftover = sum->tv_sec - avg->tv_sec*d; 140 if(leftover <= 0) 141 leftover = 0; 142 avg->tv_usec += (((long long)leftover)*((long long)1000000))/d; 143 if(avg->tv_sec < 0) 144 avg->tv_sec = 0; 145 if(avg->tv_usec < 0) 146 avg->tv_usec = 0; 147 #endif 148 } 149 150 static int 151 remote_setup_ctx(struct daemon_remote* rc, struct config_file* cfg) 152 { 153 char* s_cert; 154 char* s_key; 155 rc->ctx = SSL_CTX_new(SSLv23_server_method()); 156 if(!rc->ctx) { 157 log_crypto_err("could not SSL_CTX_new"); 158 return 0; 159 } 160 if(!listen_sslctx_setup(rc->ctx)) { 161 return 0; 162 } 163 164 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1); 165 s_key = fname_after_chroot(cfg->server_key_file, cfg, 1); 166 if(!s_cert || !s_key) { 167 log_err("out of memory in remote control fname"); 168 goto setup_error; 169 } 170 verbose(VERB_ALGO, "setup SSL certificates"); 171 if (!SSL_CTX_use_certificate_chain_file(rc->ctx,s_cert)) { 172 log_err("Error for server-cert-file: %s", s_cert); 173 log_crypto_err("Error in SSL_CTX use_certificate_chain_file"); 174 goto setup_error; 175 } 176 if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) { 177 log_err("Error for server-key-file: %s", s_key); 178 log_crypto_err("Error in SSL_CTX use_PrivateKey_file"); 179 goto setup_error; 180 } 181 if(!SSL_CTX_check_private_key(rc->ctx)) { 182 log_err("Error for server-key-file: %s", s_key); 183 log_crypto_err("Error in SSL_CTX check_private_key"); 184 goto setup_error; 185 } 186 listen_sslctx_setup_2(rc->ctx); 187 if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) { 188 log_crypto_err("Error setting up SSL_CTX verify locations"); 189 setup_error: 190 free(s_cert); 191 free(s_key); 192 return 0; 193 } 194 SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert)); 195 SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL); 196 free(s_cert); 197 free(s_key); 198 return 1; 199 } 200 201 struct daemon_remote* 202 daemon_remote_create(struct config_file* cfg) 203 { 204 struct daemon_remote* rc = (struct daemon_remote*)calloc(1, 205 sizeof(*rc)); 206 if(!rc) { 207 log_err("out of memory in daemon_remote_create"); 208 return NULL; 209 } 210 rc->max_active = 10; 211 212 if(!cfg->remote_control_enable) { 213 rc->ctx = NULL; 214 return rc; 215 } 216 if(options_remote_is_address(cfg) && cfg->control_use_cert) { 217 if(!remote_setup_ctx(rc, cfg)) { 218 daemon_remote_delete(rc); 219 return NULL; 220 } 221 rc->use_cert = 1; 222 } else { 223 struct config_strlist* p; 224 rc->ctx = NULL; 225 rc->use_cert = 0; 226 if(!options_remote_is_address(cfg)) 227 for(p = cfg->control_ifs.first; p; p = p->next) { 228 if(p->str && p->str[0] != '/') 229 log_warn("control-interface %s is not using TLS, but plain transfer, because first control-interface in config file is a local socket (starts with a /).", p->str); 230 } 231 } 232 return rc; 233 } 234 235 void daemon_remote_clear(struct daemon_remote* rc) 236 { 237 struct rc_state* p, *np; 238 if(!rc) return; 239 /* but do not close the ports */ 240 listen_list_delete(rc->accept_list); 241 rc->accept_list = NULL; 242 /* do close these sockets */ 243 p = rc->busy_list; 244 while(p) { 245 np = p->next; 246 if(p->ssl) 247 SSL_free(p->ssl); 248 comm_point_delete(p->c); 249 free(p); 250 p = np; 251 } 252 rc->busy_list = NULL; 253 rc->active = 0; 254 rc->worker = NULL; 255 } 256 257 void daemon_remote_delete(struct daemon_remote* rc) 258 { 259 if(!rc) return; 260 daemon_remote_clear(rc); 261 if(rc->ctx) { 262 SSL_CTX_free(rc->ctx); 263 } 264 free(rc); 265 } 266 267 /** 268 * Add and open a new control port 269 * @param ip: ip str 270 * @param nr: port nr 271 * @param list: list head 272 * @param noproto_is_err: if lack of protocol support is an error. 273 * @param cfg: config with username for chown of unix-sockets. 274 * @return false on failure. 275 */ 276 static int 277 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err, 278 struct config_file* cfg) 279 { 280 struct addrinfo hints; 281 struct addrinfo* res; 282 struct listen_port* n; 283 int noproto = 0; 284 int fd, r; 285 char port[15]; 286 snprintf(port, sizeof(port), "%d", nr); 287 port[sizeof(port)-1]=0; 288 memset(&hints, 0, sizeof(hints)); 289 log_assert(ip); 290 291 if(ip[0] == '/') { 292 /* This looks like a local socket */ 293 fd = create_local_accept_sock(ip, &noproto, cfg->use_systemd); 294 /* 295 * Change socket ownership and permissions so users other 296 * than root can access it provided they are in the same 297 * group as the user we run as. 298 */ 299 if(fd != -1) { 300 #ifdef HAVE_CHOWN 301 chmod(ip, (mode_t)(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP)); 302 if (cfg->username && cfg->username[0] && 303 cfg_uid != (uid_t)-1) { 304 if(chown(ip, cfg_uid, cfg_gid) == -1) 305 verbose(VERB_QUERY, "cannot chown %u.%u %s: %s", 306 (unsigned)cfg_uid, (unsigned)cfg_gid, 307 ip, strerror(errno)); 308 } 309 #else 310 (void)cfg; 311 #endif 312 } 313 } else { 314 hints.ai_socktype = SOCK_STREAM; 315 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST; 316 if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) { 317 #ifdef USE_WINSOCK 318 if(!noproto_is_err && r == EAI_NONAME) { 319 /* tried to lookup the address as name */ 320 return 1; /* return success, but do nothing */ 321 } 322 #endif /* USE_WINSOCK */ 323 log_err("control interface %s:%s getaddrinfo: %s %s", 324 ip?ip:"default", port, gai_strerror(r), 325 #ifdef EAI_SYSTEM 326 r==EAI_SYSTEM?(char*)strerror(errno):"" 327 #else 328 "" 329 #endif 330 ); 331 return 0; 332 } 333 334 /* open fd */ 335 fd = create_tcp_accept_sock(res, 1, &noproto, 0, 336 cfg->ip_transparent, 0, 0, cfg->ip_freebind, 337 cfg->use_systemd, cfg->ip_dscp); 338 freeaddrinfo(res); 339 } 340 341 if(fd == -1 && noproto) { 342 if(!noproto_is_err) 343 return 1; /* return success, but do nothing */ 344 log_err("cannot open control interface %s %d : " 345 "protocol not supported", ip, nr); 346 return 0; 347 } 348 if(fd == -1) { 349 log_err("cannot open control interface %s %d", ip, nr); 350 return 0; 351 } 352 353 /* alloc */ 354 n = (struct listen_port*)calloc(1, sizeof(*n)); 355 if(!n) { 356 sock_close(fd); 357 log_err("out of memory"); 358 return 0; 359 } 360 n->next = *list; 361 *list = n; 362 n->fd = fd; 363 return 1; 364 } 365 366 struct listen_port* daemon_remote_open_ports(struct config_file* cfg) 367 { 368 struct listen_port* l = NULL; 369 log_assert(cfg->remote_control_enable && cfg->control_port); 370 if(cfg->control_ifs.first) { 371 char** rcif = NULL; 372 int i, num_rcif = 0; 373 if(!resolve_interface_names(NULL, 0, cfg->control_ifs.first, 374 &rcif, &num_rcif)) { 375 return NULL; 376 } 377 for(i=0; i<num_rcif; i++) { 378 if(!add_open(rcif[i], cfg->control_port, &l, 1, cfg)) { 379 listening_ports_free(l); 380 config_del_strarray(rcif, num_rcif); 381 return NULL; 382 } 383 } 384 config_del_strarray(rcif, num_rcif); 385 } else { 386 /* defaults */ 387 if(cfg->do_ip6 && 388 !add_open("::1", cfg->control_port, &l, 0, cfg)) { 389 listening_ports_free(l); 390 return NULL; 391 } 392 if(cfg->do_ip4 && 393 !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) { 394 listening_ports_free(l); 395 return NULL; 396 } 397 } 398 return l; 399 } 400 401 /** open accept commpoint */ 402 static int 403 accept_open(struct daemon_remote* rc, int fd) 404 { 405 struct listen_list* n = (struct listen_list*)malloc(sizeof(*n)); 406 if(!n) { 407 log_err("out of memory"); 408 return 0; 409 } 410 n->next = rc->accept_list; 411 rc->accept_list = n; 412 /* open commpt */ 413 n->com = comm_point_create_raw(rc->worker->base, fd, 0, 414 &remote_accept_callback, rc); 415 if(!n->com) 416 return 0; 417 /* keep this port open, its fd is kept in the rc portlist */ 418 n->com->do_not_close = 1; 419 return 1; 420 } 421 422 int daemon_remote_open_accept(struct daemon_remote* rc, 423 struct listen_port* ports, struct worker* worker) 424 { 425 struct listen_port* p; 426 rc->worker = worker; 427 for(p = ports; p; p = p->next) { 428 if(!accept_open(rc, p->fd)) { 429 log_err("could not create accept comm point"); 430 return 0; 431 } 432 } 433 return 1; 434 } 435 436 void daemon_remote_stop_accept(struct daemon_remote* rc) 437 { 438 struct listen_list* p; 439 for(p=rc->accept_list; p; p=p->next) { 440 comm_point_stop_listening(p->com); 441 } 442 } 443 444 void daemon_remote_start_accept(struct daemon_remote* rc) 445 { 446 struct listen_list* p; 447 for(p=rc->accept_list; p; p=p->next) { 448 comm_point_start_listening(p->com, -1, -1); 449 } 450 } 451 452 int remote_accept_callback(struct comm_point* c, void* arg, int err, 453 struct comm_reply* ATTR_UNUSED(rep)) 454 { 455 struct daemon_remote* rc = (struct daemon_remote*)arg; 456 struct sockaddr_storage addr; 457 socklen_t addrlen; 458 int newfd; 459 struct rc_state* n; 460 if(err != NETEVENT_NOERROR) { 461 log_err("error %d on remote_accept_callback", err); 462 return 0; 463 } 464 /* perform the accept */ 465 newfd = comm_point_perform_accept(c, &addr, &addrlen); 466 if(newfd == -1) 467 return 0; 468 /* create new commpoint unless we are servicing already */ 469 if(rc->active >= rc->max_active) { 470 log_warn("drop incoming remote control: too many connections"); 471 close_exit: 472 sock_close(newfd); 473 return 0; 474 } 475 476 /* setup commpoint to service the remote control command */ 477 n = (struct rc_state*)calloc(1, sizeof(*n)); 478 if(!n) { 479 log_err("out of memory"); 480 goto close_exit; 481 } 482 n->fd = newfd; 483 /* start in reading state */ 484 n->c = comm_point_create_raw(rc->worker->base, newfd, 0, 485 &remote_control_callback, n); 486 if(!n->c) { 487 log_err("out of memory"); 488 free(n); 489 goto close_exit; 490 } 491 log_addr(VERB_QUERY, "new control connection from", &addr, addrlen); 492 n->c->do_not_close = 0; 493 comm_point_stop_listening(n->c); 494 comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT); 495 memcpy(&n->c->repinfo.remote_addr, &addr, addrlen); 496 n->c->repinfo.remote_addrlen = addrlen; 497 if(rc->use_cert) { 498 n->shake_state = rc_hs_read; 499 n->ssl = SSL_new(rc->ctx); 500 if(!n->ssl) { 501 log_crypto_err("could not SSL_new"); 502 comm_point_delete(n->c); 503 free(n); 504 goto close_exit; 505 } 506 SSL_set_accept_state(n->ssl); 507 (void)SSL_set_mode(n->ssl, (long)SSL_MODE_AUTO_RETRY); 508 if(!SSL_set_fd(n->ssl, newfd)) { 509 log_crypto_err("could not SSL_set_fd"); 510 SSL_free(n->ssl); 511 comm_point_delete(n->c); 512 free(n); 513 goto close_exit; 514 } 515 } else { 516 n->ssl = NULL; 517 } 518 519 n->rc = rc; 520 n->next = rc->busy_list; 521 rc->busy_list = n; 522 rc->active ++; 523 524 /* perform the first nonblocking read already, for windows, 525 * so it can return wouldblock. could be faster too. */ 526 (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL); 527 return 0; 528 } 529 530 /** delete from list */ 531 static void 532 state_list_remove_elem(struct rc_state** list, struct comm_point* c) 533 { 534 while(*list) { 535 if( (*list)->c == c) { 536 *list = (*list)->next; 537 return; 538 } 539 list = &(*list)->next; 540 } 541 } 542 543 /** decrease active count and remove commpoint from busy list */ 544 static void 545 clean_point(struct daemon_remote* rc, struct rc_state* s) 546 { 547 state_list_remove_elem(&rc->busy_list, s->c); 548 rc->active --; 549 if(s->ssl) { 550 SSL_shutdown(s->ssl); 551 SSL_free(s->ssl); 552 } 553 comm_point_delete(s->c); 554 free(s); 555 } 556 557 int 558 ssl_print_text(RES* res, const char* text) 559 { 560 int r; 561 if(!res) 562 return 0; 563 if(res->ssl) { 564 ERR_clear_error(); 565 if((r=SSL_write(res->ssl, text, (int)strlen(text))) <= 0) { 566 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) { 567 verbose(VERB_QUERY, "warning, in SSL_write, peer " 568 "closed connection"); 569 return 0; 570 } 571 log_crypto_err("could not SSL_write"); 572 return 0; 573 } 574 } else { 575 size_t at = 0; 576 while(at < strlen(text)) { 577 ssize_t r = send(res->fd, text+at, strlen(text)-at, 0); 578 if(r == -1) { 579 if(errno == EAGAIN || errno == EINTR) 580 continue; 581 log_err("could not send: %s", 582 sock_strerror(errno)); 583 return 0; 584 } 585 at += r; 586 } 587 } 588 return 1; 589 } 590 591 /** print text over the ssl connection */ 592 static int 593 ssl_print_vmsg(RES* ssl, const char* format, va_list args) 594 { 595 char msg[1024]; 596 vsnprintf(msg, sizeof(msg), format, args); 597 return ssl_print_text(ssl, msg); 598 } 599 600 /** printf style printing to the ssl connection */ 601 int ssl_printf(RES* ssl, const char* format, ...) 602 { 603 va_list args; 604 int ret; 605 va_start(args, format); 606 ret = ssl_print_vmsg(ssl, format, args); 607 va_end(args); 608 return ret; 609 } 610 611 int 612 ssl_read_line(RES* res, char* buf, size_t max) 613 { 614 int r; 615 size_t len = 0; 616 if(!res) 617 return 0; 618 while(len < max) { 619 if(res->ssl) { 620 ERR_clear_error(); 621 if((r=SSL_read(res->ssl, buf+len, 1)) <= 0) { 622 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) { 623 buf[len] = 0; 624 return 1; 625 } 626 log_crypto_err("could not SSL_read"); 627 return 0; 628 } 629 } else { 630 while(1) { 631 ssize_t rr = recv(res->fd, buf+len, 1, 0); 632 if(rr <= 0) { 633 if(rr == 0) { 634 buf[len] = 0; 635 return 1; 636 } 637 if(errno == EINTR || errno == EAGAIN) 638 continue; 639 log_err("could not recv: %s", 640 sock_strerror(errno)); 641 return 0; 642 } 643 break; 644 } 645 } 646 if(buf[len] == '\n') { 647 /* return string without \n */ 648 buf[len] = 0; 649 return 1; 650 } 651 len++; 652 } 653 buf[max-1] = 0; 654 log_err("control line too long (%d): %s", (int)max, buf); 655 return 0; 656 } 657 658 /** skip whitespace, return new pointer into string */ 659 static char* 660 skipwhite(char* str) 661 { 662 /* EOS \0 is not a space */ 663 while( isspace((unsigned char)*str) ) 664 str++; 665 return str; 666 } 667 668 /** send the OK to the control client */ 669 static void send_ok(RES* ssl) 670 { 671 (void)ssl_printf(ssl, "ok\n"); 672 } 673 674 /** do the stop command */ 675 static void 676 do_stop(RES* ssl, struct worker* worker) 677 { 678 worker->need_to_exit = 1; 679 comm_base_exit(worker->base); 680 send_ok(ssl); 681 } 682 683 /** do the reload command */ 684 static void 685 do_reload(RES* ssl, struct worker* worker, int reuse_cache) 686 { 687 worker->reuse_cache = reuse_cache; 688 worker->need_to_exit = 0; 689 comm_base_exit(worker->base); 690 send_ok(ssl); 691 } 692 693 /** do the verbosity command */ 694 static void 695 do_verbosity(RES* ssl, char* str) 696 { 697 int val = atoi(str); 698 if(val == 0 && strcmp(str, "0") != 0) { 699 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str); 700 return; 701 } 702 verbosity = val; 703 send_ok(ssl); 704 } 705 706 /** print stats from statinfo */ 707 static int 708 print_stats(RES* ssl, const char* nm, struct ub_stats_info* s) 709 { 710 struct timeval sumwait, avg; 711 if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm, 712 (unsigned long)s->svr.num_queries)) return 0; 713 if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm, 714 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0; 715 if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm, 716 (unsigned long)(s->svr.num_queries 717 - s->svr.num_queries_missed_cache))) return 0; 718 if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm, 719 (unsigned long)s->svr.num_queries_missed_cache)) return 0; 720 if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm, 721 (unsigned long)s->svr.num_queries_prefetch)) return 0; 722 if(!ssl_printf(ssl, "%s.num.expired"SQ"%lu\n", nm, 723 (unsigned long)s->svr.ans_expired)) return 0; 724 if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm, 725 (unsigned long)s->mesh_replies_sent)) return 0; 726 #ifdef USE_DNSCRYPT 727 if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm, 728 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0; 729 if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm, 730 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0; 731 if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm, 732 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0; 733 if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm, 734 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0; 735 #endif 736 if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm, 737 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)? 738 (double)s->svr.sum_query_list_size/ 739 (double)(s->svr.num_queries_missed_cache+ 740 s->svr.num_queries_prefetch) : 0.0)) return 0; 741 if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm, 742 (unsigned long)s->svr.max_query_list_size)) return 0; 743 if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm, 744 (unsigned long)s->mesh_jostled)) return 0; 745 if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm, 746 (unsigned long)s->mesh_dropped)) return 0; 747 if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm, 748 (unsigned long)s->mesh_num_states)) return 0; 749 if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm, 750 (unsigned long)s->mesh_num_reply_states)) return 0; 751 #ifndef S_SPLINT_S 752 sumwait.tv_sec = s->mesh_replies_sum_wait_sec; 753 sumwait.tv_usec = s->mesh_replies_sum_wait_usec; 754 #endif 755 timeval_divide(&avg, &sumwait, s->mesh_replies_sent); 756 if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm, 757 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0; 758 if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm, 759 s->mesh_time_median)) return 0; 760 if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm, 761 (unsigned long)s->svr.tcp_accept_usage)) return 0; 762 return 1; 763 } 764 765 /** print stats for one thread */ 766 static int 767 print_thread_stats(RES* ssl, int i, struct ub_stats_info* s) 768 { 769 char nm[32]; 770 snprintf(nm, sizeof(nm), "thread%d", i); 771 nm[sizeof(nm)-1]=0; 772 return print_stats(ssl, nm, s); 773 } 774 775 /** print long number */ 776 static int 777 print_longnum(RES* ssl, const char* desc, size_t x) 778 { 779 if(x > 1024*1024*1024) { 780 /* more than a Gb */ 781 size_t front = x / (size_t)1000000; 782 size_t back = x % (size_t)1000000; 783 return ssl_printf(ssl, "%s%u%6.6u\n", desc, 784 (unsigned)front, (unsigned)back); 785 } else { 786 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x); 787 } 788 } 789 790 /** print mem stats */ 791 static int 792 print_mem(RES* ssl, struct worker* worker, struct daemon* daemon, 793 struct ub_stats_info* s) 794 { 795 size_t msg, rrset, val, iter, respip; 796 #ifdef CLIENT_SUBNET 797 size_t subnet = 0; 798 #endif /* CLIENT_SUBNET */ 799 #ifdef USE_IPSECMOD 800 size_t ipsecmod = 0; 801 #endif /* USE_IPSECMOD */ 802 #ifdef USE_DNSCRYPT 803 size_t dnscrypt_shared_secret = 0; 804 size_t dnscrypt_nonce = 0; 805 #endif /* USE_DNSCRYPT */ 806 #ifdef WITH_DYNLIBMODULE 807 size_t dynlib = 0; 808 #endif /* WITH_DYNLIBMODULE */ 809 msg = slabhash_get_mem(daemon->env->msg_cache); 810 rrset = slabhash_get_mem(&daemon->env->rrset_cache->table); 811 val = mod_get_mem(&worker->env, "validator"); 812 iter = mod_get_mem(&worker->env, "iterator"); 813 respip = mod_get_mem(&worker->env, "respip"); 814 #ifdef CLIENT_SUBNET 815 subnet = mod_get_mem(&worker->env, "subnetcache"); 816 #endif /* CLIENT_SUBNET */ 817 #ifdef USE_IPSECMOD 818 ipsecmod = mod_get_mem(&worker->env, "ipsecmod"); 819 #endif /* USE_IPSECMOD */ 820 #ifdef USE_DNSCRYPT 821 if(daemon->dnscenv) { 822 dnscrypt_shared_secret = slabhash_get_mem( 823 daemon->dnscenv->shared_secrets_cache); 824 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache); 825 } 826 #endif /* USE_DNSCRYPT */ 827 #ifdef WITH_DYNLIBMODULE 828 dynlib = mod_get_mem(&worker->env, "dynlib"); 829 #endif /* WITH_DYNLIBMODULE */ 830 831 if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset)) 832 return 0; 833 if(!print_longnum(ssl, "mem.cache.message"SQ, msg)) 834 return 0; 835 if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter)) 836 return 0; 837 if(!print_longnum(ssl, "mem.mod.validator"SQ, val)) 838 return 0; 839 if(!print_longnum(ssl, "mem.mod.respip"SQ, respip)) 840 return 0; 841 #ifdef CLIENT_SUBNET 842 if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet)) 843 return 0; 844 #endif /* CLIENT_SUBNET */ 845 #ifdef USE_IPSECMOD 846 if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod)) 847 return 0; 848 #endif /* USE_IPSECMOD */ 849 #ifdef USE_DNSCRYPT 850 if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ, 851 dnscrypt_shared_secret)) 852 return 0; 853 if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ, 854 dnscrypt_nonce)) 855 return 0; 856 #endif /* USE_DNSCRYPT */ 857 #ifdef WITH_DYNLIBMODULE 858 if(!print_longnum(ssl, "mem.mod.dynlibmod"SQ, dynlib)) 859 return 0; 860 #endif /* WITH_DYNLIBMODULE */ 861 if(!print_longnum(ssl, "mem.streamwait"SQ, 862 (size_t)s->svr.mem_stream_wait)) 863 return 0; 864 if(!print_longnum(ssl, "mem.http.query_buffer"SQ, 865 (size_t)s->svr.mem_http2_query_buffer)) 866 return 0; 867 if(!print_longnum(ssl, "mem.http.response_buffer"SQ, 868 (size_t)s->svr.mem_http2_response_buffer)) 869 return 0; 870 return 1; 871 } 872 873 /** print uptime stats */ 874 static int 875 print_uptime(RES* ssl, struct worker* worker, int reset) 876 { 877 struct timeval now = *worker->env.now_tv; 878 struct timeval up, dt; 879 timeval_subtract(&up, &now, &worker->daemon->time_boot); 880 timeval_subtract(&dt, &now, &worker->daemon->time_last_stat); 881 if(reset) 882 worker->daemon->time_last_stat = now; 883 if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n", 884 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0; 885 if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n", 886 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0; 887 if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n", 888 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0; 889 return 1; 890 } 891 892 /** print extended histogram */ 893 static int 894 print_hist(RES* ssl, struct ub_stats_info* s) 895 { 896 struct timehist* hist; 897 size_t i; 898 hist = timehist_setup(); 899 if(!hist) { 900 log_err("out of memory"); 901 return 0; 902 } 903 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST); 904 for(i=0; i<hist->num; i++) { 905 if(!ssl_printf(ssl, 906 "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n", 907 (int)hist->buckets[i].lower.tv_sec, 908 (int)hist->buckets[i].lower.tv_usec, 909 (int)hist->buckets[i].upper.tv_sec, 910 (int)hist->buckets[i].upper.tv_usec, 911 (unsigned long)hist->buckets[i].count)) { 912 timehist_delete(hist); 913 return 0; 914 } 915 } 916 timehist_delete(hist); 917 return 1; 918 } 919 920 /** print extended stats */ 921 static int 922 print_ext(RES* ssl, struct ub_stats_info* s, int inhibit_zero) 923 { 924 int i; 925 char nm[32]; 926 const sldns_rr_descriptor* desc; 927 const sldns_lookup_table* lt; 928 /* TYPE */ 929 for(i=0; i<UB_STATS_QTYPE_NUM; i++) { 930 if(inhibit_zero && s->svr.qtype[i] == 0) 931 continue; 932 desc = sldns_rr_descript((uint16_t)i); 933 if(desc && desc->_name) { 934 snprintf(nm, sizeof(nm), "%s", desc->_name); 935 } else if (i == LDNS_RR_TYPE_IXFR) { 936 snprintf(nm, sizeof(nm), "IXFR"); 937 } else if (i == LDNS_RR_TYPE_AXFR) { 938 snprintf(nm, sizeof(nm), "AXFR"); 939 } else if (i == LDNS_RR_TYPE_MAILA) { 940 snprintf(nm, sizeof(nm), "MAILA"); 941 } else if (i == LDNS_RR_TYPE_MAILB) { 942 snprintf(nm, sizeof(nm), "MAILB"); 943 } else if (i == LDNS_RR_TYPE_ANY) { 944 snprintf(nm, sizeof(nm), "ANY"); 945 } else { 946 snprintf(nm, sizeof(nm), "TYPE%d", i); 947 } 948 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n", 949 nm, (unsigned long)s->svr.qtype[i])) return 0; 950 } 951 if(!inhibit_zero || s->svr.qtype_big) { 952 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n", 953 (unsigned long)s->svr.qtype_big)) return 0; 954 } 955 /* CLASS */ 956 for(i=0; i<UB_STATS_QCLASS_NUM; i++) { 957 if(inhibit_zero && s->svr.qclass[i] == 0) 958 continue; 959 lt = sldns_lookup_by_id(sldns_rr_classes, i); 960 if(lt && lt->name) { 961 snprintf(nm, sizeof(nm), "%s", lt->name); 962 } else { 963 snprintf(nm, sizeof(nm), "CLASS%d", i); 964 } 965 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n", 966 nm, (unsigned long)s->svr.qclass[i])) return 0; 967 } 968 if(!inhibit_zero || s->svr.qclass_big) { 969 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n", 970 (unsigned long)s->svr.qclass_big)) return 0; 971 } 972 /* OPCODE */ 973 for(i=0; i<UB_STATS_OPCODE_NUM; i++) { 974 if(inhibit_zero && s->svr.qopcode[i] == 0) 975 continue; 976 lt = sldns_lookup_by_id(sldns_opcodes, i); 977 if(lt && lt->name) { 978 snprintf(nm, sizeof(nm), "%s", lt->name); 979 } else { 980 snprintf(nm, sizeof(nm), "OPCODE%d", i); 981 } 982 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n", 983 nm, (unsigned long)s->svr.qopcode[i])) return 0; 984 } 985 /* transport */ 986 if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n", 987 (unsigned long)s->svr.qtcp)) return 0; 988 if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n", 989 (unsigned long)s->svr.qtcp_outgoing)) return 0; 990 if(!ssl_printf(ssl, "num.query.udpout"SQ"%lu\n", 991 (unsigned long)s->svr.qudp_outgoing)) return 0; 992 if(!ssl_printf(ssl, "num.query.tls"SQ"%lu\n", 993 (unsigned long)s->svr.qtls)) return 0; 994 if(!ssl_printf(ssl, "num.query.tls.resume"SQ"%lu\n", 995 (unsigned long)s->svr.qtls_resume)) return 0; 996 if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n", 997 (unsigned long)s->svr.qipv6)) return 0; 998 if(!ssl_printf(ssl, "num.query.https"SQ"%lu\n", 999 (unsigned long)s->svr.qhttps)) return 0; 1000 /* flags */ 1001 if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n", 1002 (unsigned long)s->svr.qbit_QR)) return 0; 1003 if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n", 1004 (unsigned long)s->svr.qbit_AA)) return 0; 1005 if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n", 1006 (unsigned long)s->svr.qbit_TC)) return 0; 1007 if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n", 1008 (unsigned long)s->svr.qbit_RD)) return 0; 1009 if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n", 1010 (unsigned long)s->svr.qbit_RA)) return 0; 1011 if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n", 1012 (unsigned long)s->svr.qbit_Z)) return 0; 1013 if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n", 1014 (unsigned long)s->svr.qbit_AD)) return 0; 1015 if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n", 1016 (unsigned long)s->svr.qbit_CD)) return 0; 1017 if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n", 1018 (unsigned long)s->svr.qEDNS)) return 0; 1019 if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n", 1020 (unsigned long)s->svr.qEDNS_DO)) return 0; 1021 1022 /* RCODE */ 1023 for(i=0; i<UB_STATS_RCODE_NUM; i++) { 1024 /* Always include RCODEs 0-5 */ 1025 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0) 1026 continue; 1027 lt = sldns_lookup_by_id(sldns_rcodes, i); 1028 if(lt && lt->name) { 1029 snprintf(nm, sizeof(nm), "%s", lt->name); 1030 } else { 1031 snprintf(nm, sizeof(nm), "RCODE%d", i); 1032 } 1033 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n", 1034 nm, (unsigned long)s->svr.ans_rcode[i])) return 0; 1035 } 1036 if(!inhibit_zero || s->svr.ans_rcode_nodata) { 1037 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n", 1038 (unsigned long)s->svr.ans_rcode_nodata)) return 0; 1039 } 1040 /* iteration */ 1041 if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n", 1042 (unsigned long)s->svr.queries_ratelimited)) return 0; 1043 /* validation */ 1044 if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n", 1045 (unsigned long)s->svr.ans_secure)) return 0; 1046 if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n", 1047 (unsigned long)s->svr.ans_bogus)) return 0; 1048 if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n", 1049 (unsigned long)s->svr.rrset_bogus)) return 0; 1050 if(!ssl_printf(ssl, "num.query.aggressive.NOERROR"SQ"%lu\n", 1051 (unsigned long)s->svr.num_neg_cache_noerror)) return 0; 1052 if(!ssl_printf(ssl, "num.query.aggressive.NXDOMAIN"SQ"%lu\n", 1053 (unsigned long)s->svr.num_neg_cache_nxdomain)) return 0; 1054 /* threat detection */ 1055 if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n", 1056 (unsigned long)s->svr.unwanted_queries)) return 0; 1057 if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n", 1058 (unsigned long)s->svr.unwanted_replies)) return 0; 1059 /* cache counts */ 1060 if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n", 1061 (unsigned)s->svr.msg_cache_count)) return 0; 1062 if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n", 1063 (unsigned)s->svr.rrset_cache_count)) return 0; 1064 if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n", 1065 (unsigned)s->svr.infra_cache_count)) return 0; 1066 if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n", 1067 (unsigned)s->svr.key_cache_count)) return 0; 1068 /* applied RPZ actions */ 1069 for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) { 1070 if(i == RPZ_NO_OVERRIDE_ACTION) 1071 continue; 1072 if(inhibit_zero && s->svr.rpz_action[i] == 0) 1073 continue; 1074 if(!ssl_printf(ssl, "num.rpz.action.%s"SQ"%lu\n", 1075 rpz_action_to_string(i), 1076 (unsigned long)s->svr.rpz_action[i])) return 0; 1077 } 1078 #ifdef USE_DNSCRYPT 1079 if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n", 1080 (unsigned)s->svr.shared_secret_cache_count)) return 0; 1081 if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n", 1082 (unsigned)s->svr.nonce_cache_count)) return 0; 1083 if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n", 1084 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0; 1085 if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n", 1086 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0; 1087 #endif /* USE_DNSCRYPT */ 1088 if(!ssl_printf(ssl, "num.query.authzone.up"SQ"%lu\n", 1089 (unsigned long)s->svr.num_query_authzone_up)) return 0; 1090 if(!ssl_printf(ssl, "num.query.authzone.down"SQ"%lu\n", 1091 (unsigned long)s->svr.num_query_authzone_down)) return 0; 1092 #ifdef CLIENT_SUBNET 1093 if(!ssl_printf(ssl, "num.query.subnet"SQ"%lu\n", 1094 (unsigned long)s->svr.num_query_subnet)) return 0; 1095 if(!ssl_printf(ssl, "num.query.subnet_cache"SQ"%lu\n", 1096 (unsigned long)s->svr.num_query_subnet_cache)) return 0; 1097 #endif /* CLIENT_SUBNET */ 1098 return 1; 1099 } 1100 1101 /** do the stats command */ 1102 static void 1103 do_stats(RES* ssl, struct worker* worker, int reset) 1104 { 1105 struct daemon* daemon = worker->daemon; 1106 struct ub_stats_info total; 1107 struct ub_stats_info s; 1108 int i; 1109 memset(&total, 0, sizeof(total)); 1110 log_assert(daemon->num > 0); 1111 /* gather all thread statistics in one place */ 1112 for(i=0; i<daemon->num; i++) { 1113 server_stats_obtain(worker, daemon->workers[i], &s, reset); 1114 if(!print_thread_stats(ssl, i, &s)) 1115 return; 1116 if(i == 0) 1117 total = s; 1118 else server_stats_add(&total, &s); 1119 } 1120 /* print the thread statistics */ 1121 total.mesh_time_median /= (double)daemon->num; 1122 if(!print_stats(ssl, "total", &total)) 1123 return; 1124 if(!print_uptime(ssl, worker, reset)) 1125 return; 1126 if(daemon->cfg->stat_extended) { 1127 if(!print_mem(ssl, worker, daemon, &total)) 1128 return; 1129 if(!print_hist(ssl, &total)) 1130 return; 1131 if(!print_ext(ssl, &total, daemon->cfg->stat_inhibit_zero)) 1132 return; 1133 } 1134 } 1135 1136 /** parse commandline argument domain name */ 1137 static int 1138 parse_arg_name(RES* ssl, char* str, uint8_t** res, size_t* len, int* labs) 1139 { 1140 uint8_t nm[LDNS_MAX_DOMAINLEN+1]; 1141 size_t nmlen = sizeof(nm); 1142 int status; 1143 *res = NULL; 1144 *len = 0; 1145 *labs = 0; 1146 if(str[0] == '\0') { 1147 ssl_printf(ssl, "error: this option requires a domain name\n"); 1148 return 0; 1149 } 1150 status = sldns_str2wire_dname_buf(str, nm, &nmlen); 1151 if(status != 0) { 1152 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str, 1153 LDNS_WIREPARSE_OFFSET(status), 1154 sldns_get_errorstr_parse(status)); 1155 return 0; 1156 } 1157 *res = memdup(nm, nmlen); 1158 if(!*res) { 1159 ssl_printf(ssl, "error out of memory\n"); 1160 return 0; 1161 } 1162 *labs = dname_count_size_labels(*res, len); 1163 return 1; 1164 } 1165 1166 /** find second argument, modifies string */ 1167 static int 1168 find_arg2(RES* ssl, char* arg, char** arg2) 1169 { 1170 char* as = strchr(arg, ' '); 1171 char* at = strchr(arg, '\t'); 1172 if(as && at) { 1173 if(at < as) 1174 as = at; 1175 as[0]=0; 1176 *arg2 = skipwhite(as+1); 1177 } else if(as) { 1178 as[0]=0; 1179 *arg2 = skipwhite(as+1); 1180 } else if(at) { 1181 at[0]=0; 1182 *arg2 = skipwhite(at+1); 1183 } else { 1184 ssl_printf(ssl, "error could not find next argument " 1185 "after %s\n", arg); 1186 return 0; 1187 } 1188 return 1; 1189 } 1190 1191 /** Add a new zone */ 1192 static int 1193 perform_zone_add(RES* ssl, struct local_zones* zones, char* arg) 1194 { 1195 uint8_t* nm; 1196 int nmlabs; 1197 size_t nmlen; 1198 char* arg2; 1199 enum localzone_type t; 1200 struct local_zone* z; 1201 if(!find_arg2(ssl, arg, &arg2)) 1202 return 0; 1203 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1204 return 0; 1205 if(!local_zone_str2type(arg2, &t)) { 1206 ssl_printf(ssl, "error not a zone type. %s\n", arg2); 1207 free(nm); 1208 return 0; 1209 } 1210 lock_rw_wrlock(&zones->lock); 1211 if((z=local_zones_find(zones, nm, nmlen, 1212 nmlabs, LDNS_RR_CLASS_IN))) { 1213 /* already present in tree */ 1214 lock_rw_wrlock(&z->lock); 1215 z->type = t; /* update type anyway */ 1216 lock_rw_unlock(&z->lock); 1217 free(nm); 1218 lock_rw_unlock(&zones->lock); 1219 return 1; 1220 } 1221 if(!local_zones_add_zone(zones, nm, nmlen, 1222 nmlabs, LDNS_RR_CLASS_IN, t)) { 1223 lock_rw_unlock(&zones->lock); 1224 ssl_printf(ssl, "error out of memory\n"); 1225 return 0; 1226 } 1227 lock_rw_unlock(&zones->lock); 1228 return 1; 1229 } 1230 1231 /** Do the local_zone command */ 1232 static void 1233 do_zone_add(RES* ssl, struct local_zones* zones, char* arg) 1234 { 1235 if(!perform_zone_add(ssl, zones, arg)) 1236 return; 1237 send_ok(ssl); 1238 } 1239 1240 /** Do the local_zones command */ 1241 static void 1242 do_zones_add(RES* ssl, struct local_zones* zones) 1243 { 1244 char buf[2048]; 1245 int num = 0; 1246 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1247 if(buf[0] == 0x04 && buf[1] == 0) 1248 break; /* end of transmission */ 1249 if(!perform_zone_add(ssl, zones, buf)) { 1250 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1251 return; 1252 } 1253 else 1254 num++; 1255 } 1256 (void)ssl_printf(ssl, "added %d zones\n", num); 1257 } 1258 1259 /** Remove a zone */ 1260 static int 1261 perform_zone_remove(RES* ssl, struct local_zones* zones, char* arg) 1262 { 1263 uint8_t* nm; 1264 int nmlabs; 1265 size_t nmlen; 1266 struct local_zone* z; 1267 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1268 return 0; 1269 lock_rw_wrlock(&zones->lock); 1270 if((z=local_zones_find(zones, nm, nmlen, 1271 nmlabs, LDNS_RR_CLASS_IN))) { 1272 /* present in tree */ 1273 local_zones_del_zone(zones, z); 1274 } 1275 lock_rw_unlock(&zones->lock); 1276 free(nm); 1277 return 1; 1278 } 1279 1280 /** Do the local_zone_remove command */ 1281 static void 1282 do_zone_remove(RES* ssl, struct local_zones* zones, char* arg) 1283 { 1284 if(!perform_zone_remove(ssl, zones, arg)) 1285 return; 1286 send_ok(ssl); 1287 } 1288 1289 /** Do the local_zones_remove command */ 1290 static void 1291 do_zones_remove(RES* ssl, struct local_zones* zones) 1292 { 1293 char buf[2048]; 1294 int num = 0; 1295 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1296 if(buf[0] == 0x04 && buf[1] == 0) 1297 break; /* end of transmission */ 1298 if(!perform_zone_remove(ssl, zones, buf)) { 1299 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1300 return; 1301 } 1302 else 1303 num++; 1304 } 1305 (void)ssl_printf(ssl, "removed %d zones\n", num); 1306 } 1307 1308 /** check syntax of newly added RR */ 1309 static int 1310 check_RR_syntax(RES* ssl, char* str, int line) 1311 { 1312 uint8_t rr[LDNS_RR_BUF_SIZE]; 1313 size_t len = sizeof(rr), dname_len = 0; 1314 int s = sldns_str2wire_rr_buf(str, rr, &len, &dname_len, 3600, 1315 NULL, 0, NULL, 0); 1316 if(s != 0) { 1317 char linestr[32]; 1318 if(line == 0) 1319 linestr[0]=0; 1320 else snprintf(linestr, sizeof(linestr), "line %d ", line); 1321 if(!ssl_printf(ssl, "error parsing local-data at %sposition %d '%s': %s\n", 1322 linestr, LDNS_WIREPARSE_OFFSET(s), str, 1323 sldns_get_errorstr_parse(s))) 1324 return 0; 1325 return 0; 1326 } 1327 return 1; 1328 } 1329 1330 /** Add new RR data */ 1331 static int 1332 perform_data_add(RES* ssl, struct local_zones* zones, char* arg, int line) 1333 { 1334 if(!check_RR_syntax(ssl, arg, line)) { 1335 return 0; 1336 } 1337 if(!local_zones_add_RR(zones, arg)) { 1338 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg); 1339 return 0; 1340 } 1341 return 1; 1342 } 1343 1344 /** Do the local_data command */ 1345 static void 1346 do_data_add(RES* ssl, struct local_zones* zones, char* arg) 1347 { 1348 if(!perform_data_add(ssl, zones, arg, 0)) 1349 return; 1350 send_ok(ssl); 1351 } 1352 1353 /** Do the local_datas command */ 1354 static void 1355 do_datas_add(RES* ssl, struct local_zones* zones) 1356 { 1357 char buf[2048]; 1358 int num = 0, line = 0; 1359 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1360 if(buf[0] == 0x04 && buf[1] == 0) 1361 break; /* end of transmission */ 1362 line++; 1363 if(perform_data_add(ssl, zones, buf, line)) 1364 num++; 1365 } 1366 (void)ssl_printf(ssl, "added %d datas\n", num); 1367 } 1368 1369 /** Remove RR data */ 1370 static int 1371 perform_data_remove(RES* ssl, struct local_zones* zones, char* arg) 1372 { 1373 uint8_t* nm; 1374 int nmlabs; 1375 size_t nmlen; 1376 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1377 return 0; 1378 local_zones_del_data(zones, nm, 1379 nmlen, nmlabs, LDNS_RR_CLASS_IN); 1380 free(nm); 1381 return 1; 1382 } 1383 1384 /** Do the local_data_remove command */ 1385 static void 1386 do_data_remove(RES* ssl, struct local_zones* zones, char* arg) 1387 { 1388 if(!perform_data_remove(ssl, zones, arg)) 1389 return; 1390 send_ok(ssl); 1391 } 1392 1393 /** Do the local_datas_remove command */ 1394 static void 1395 do_datas_remove(RES* ssl, struct local_zones* zones) 1396 { 1397 char buf[2048]; 1398 int num = 0; 1399 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1400 if(buf[0] == 0x04 && buf[1] == 0) 1401 break; /* end of transmission */ 1402 if(!perform_data_remove(ssl, zones, buf)) { 1403 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1404 return; 1405 } 1406 else 1407 num++; 1408 } 1409 (void)ssl_printf(ssl, "removed %d datas\n", num); 1410 } 1411 1412 /** Add a new zone to view */ 1413 static void 1414 do_view_zone_add(RES* ssl, struct worker* worker, char* arg) 1415 { 1416 char* arg2; 1417 struct view* v; 1418 if(!find_arg2(ssl, arg, &arg2)) 1419 return; 1420 v = views_find_view(worker->daemon->views, 1421 arg, 1 /* get write lock*/); 1422 if(!v) { 1423 ssl_printf(ssl,"no view with name: %s\n", arg); 1424 return; 1425 } 1426 if(!v->local_zones) { 1427 if(!(v->local_zones = local_zones_create())){ 1428 lock_rw_unlock(&v->lock); 1429 ssl_printf(ssl,"error out of memory\n"); 1430 return; 1431 } 1432 if(!v->isfirst) { 1433 /* Global local-zone is not used for this view, 1434 * therefore add defaults to this view-specic 1435 * local-zone. */ 1436 struct config_file lz_cfg; 1437 memset(&lz_cfg, 0, sizeof(lz_cfg)); 1438 local_zone_enter_defaults(v->local_zones, &lz_cfg); 1439 } 1440 } 1441 do_zone_add(ssl, v->local_zones, arg2); 1442 lock_rw_unlock(&v->lock); 1443 } 1444 1445 /** Remove a zone from view */ 1446 static void 1447 do_view_zone_remove(RES* ssl, struct worker* worker, char* arg) 1448 { 1449 char* arg2; 1450 struct view* v; 1451 if(!find_arg2(ssl, arg, &arg2)) 1452 return; 1453 v = views_find_view(worker->daemon->views, 1454 arg, 1 /* get write lock*/); 1455 if(!v) { 1456 ssl_printf(ssl,"no view with name: %s\n", arg); 1457 return; 1458 } 1459 if(!v->local_zones) { 1460 lock_rw_unlock(&v->lock); 1461 send_ok(ssl); 1462 return; 1463 } 1464 do_zone_remove(ssl, v->local_zones, arg2); 1465 lock_rw_unlock(&v->lock); 1466 } 1467 1468 /** Add new RR data to view */ 1469 static void 1470 do_view_data_add(RES* ssl, struct worker* worker, char* arg) 1471 { 1472 char* arg2; 1473 struct view* v; 1474 if(!find_arg2(ssl, arg, &arg2)) 1475 return; 1476 v = views_find_view(worker->daemon->views, 1477 arg, 1 /* get write lock*/); 1478 if(!v) { 1479 ssl_printf(ssl,"no view with name: %s\n", arg); 1480 return; 1481 } 1482 if(!v->local_zones) { 1483 if(!(v->local_zones = local_zones_create())){ 1484 lock_rw_unlock(&v->lock); 1485 ssl_printf(ssl,"error out of memory\n"); 1486 return; 1487 } 1488 } 1489 do_data_add(ssl, v->local_zones, arg2); 1490 lock_rw_unlock(&v->lock); 1491 } 1492 1493 /** Add new RR data from stdin to view */ 1494 static void 1495 do_view_datas_add(RES* ssl, struct worker* worker, char* arg) 1496 { 1497 struct view* v; 1498 v = views_find_view(worker->daemon->views, 1499 arg, 1 /* get write lock*/); 1500 if(!v) { 1501 ssl_printf(ssl,"no view with name: %s\n", arg); 1502 return; 1503 } 1504 if(!v->local_zones) { 1505 if(!(v->local_zones = local_zones_create())){ 1506 lock_rw_unlock(&v->lock); 1507 ssl_printf(ssl,"error out of memory\n"); 1508 return; 1509 } 1510 } 1511 do_datas_add(ssl, v->local_zones); 1512 lock_rw_unlock(&v->lock); 1513 } 1514 1515 /** Remove RR data from view */ 1516 static void 1517 do_view_data_remove(RES* ssl, struct worker* worker, char* arg) 1518 { 1519 char* arg2; 1520 struct view* v; 1521 if(!find_arg2(ssl, arg, &arg2)) 1522 return; 1523 v = views_find_view(worker->daemon->views, 1524 arg, 1 /* get write lock*/); 1525 if(!v) { 1526 ssl_printf(ssl,"no view with name: %s\n", arg); 1527 return; 1528 } 1529 if(!v->local_zones) { 1530 lock_rw_unlock(&v->lock); 1531 send_ok(ssl); 1532 return; 1533 } 1534 do_data_remove(ssl, v->local_zones, arg2); 1535 lock_rw_unlock(&v->lock); 1536 } 1537 1538 /** Remove RR data from stdin from view */ 1539 static void 1540 do_view_datas_remove(RES* ssl, struct worker* worker, char* arg) 1541 { 1542 struct view* v; 1543 v = views_find_view(worker->daemon->views, 1544 arg, 1 /* get write lock*/); 1545 if(!v) { 1546 ssl_printf(ssl,"no view with name: %s\n", arg); 1547 return; 1548 } 1549 if(!v->local_zones){ 1550 lock_rw_unlock(&v->lock); 1551 ssl_printf(ssl, "removed 0 datas\n"); 1552 return; 1553 } 1554 1555 do_datas_remove(ssl, v->local_zones); 1556 lock_rw_unlock(&v->lock); 1557 } 1558 1559 /** cache lookup of nameservers */ 1560 static void 1561 do_lookup(RES* ssl, struct worker* worker, char* arg) 1562 { 1563 uint8_t* nm; 1564 int nmlabs; 1565 size_t nmlen; 1566 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1567 return; 1568 (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs); 1569 free(nm); 1570 } 1571 1572 /** flush something from rrset and msg caches */ 1573 static void 1574 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen, 1575 uint16_t t, uint16_t c) 1576 { 1577 hashvalue_type h; 1578 struct query_info k; 1579 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0); 1580 if(t == LDNS_RR_TYPE_SOA) 1581 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 1582 PACKED_RRSET_SOA_NEG); 1583 k.qname = nm; 1584 k.qname_len = nmlen; 1585 k.qtype = t; 1586 k.qclass = c; 1587 k.local_alias = NULL; 1588 h = query_info_hash(&k, 0); 1589 slabhash_remove(worker->env.msg_cache, h, &k); 1590 if(t == LDNS_RR_TYPE_AAAA) { 1591 /* for AAAA also flush dns64 bit_cd packet */ 1592 h = query_info_hash(&k, BIT_CD); 1593 slabhash_remove(worker->env.msg_cache, h, &k); 1594 } 1595 } 1596 1597 /** flush a type */ 1598 static void 1599 do_flush_type(RES* ssl, struct worker* worker, char* arg) 1600 { 1601 uint8_t* nm; 1602 int nmlabs; 1603 size_t nmlen; 1604 char* arg2; 1605 uint16_t t; 1606 if(!find_arg2(ssl, arg, &arg2)) 1607 return; 1608 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1609 return; 1610 t = sldns_get_rr_type_by_name(arg2); 1611 do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN); 1612 1613 free(nm); 1614 send_ok(ssl); 1615 } 1616 1617 /** flush statistics */ 1618 static void 1619 do_flush_stats(RES* ssl, struct worker* worker) 1620 { 1621 worker_stats_clear(worker); 1622 send_ok(ssl); 1623 } 1624 1625 /** 1626 * Local info for deletion functions 1627 */ 1628 struct del_info { 1629 /** worker */ 1630 struct worker* worker; 1631 /** name to delete */ 1632 uint8_t* name; 1633 /** length */ 1634 size_t len; 1635 /** labels */ 1636 int labs; 1637 /** time to invalidate to */ 1638 time_t expired; 1639 /** number of rrsets removed */ 1640 size_t num_rrsets; 1641 /** number of msgs removed */ 1642 size_t num_msgs; 1643 /** number of key entries removed */ 1644 size_t num_keys; 1645 /** length of addr */ 1646 socklen_t addrlen; 1647 /** socket address for host deletion */ 1648 struct sockaddr_storage addr; 1649 }; 1650 1651 /** callback to delete hosts in infra cache */ 1652 static void 1653 infra_del_host(struct lruhash_entry* e, void* arg) 1654 { 1655 /* entry is locked */ 1656 struct del_info* inf = (struct del_info*)arg; 1657 struct infra_key* k = (struct infra_key*)e->key; 1658 if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) { 1659 struct infra_data* d = (struct infra_data*)e->data; 1660 d->probedelay = 0; 1661 d->timeout_A = 0; 1662 d->timeout_AAAA = 0; 1663 d->timeout_other = 0; 1664 rtt_init(&d->rtt); 1665 if(d->ttl > inf->expired) { 1666 d->ttl = inf->expired; 1667 inf->num_keys++; 1668 } 1669 } 1670 } 1671 1672 /** flush infra cache */ 1673 static void 1674 do_flush_infra(RES* ssl, struct worker* worker, char* arg) 1675 { 1676 struct sockaddr_storage addr; 1677 socklen_t len; 1678 struct del_info inf; 1679 if(strcmp(arg, "all") == 0) { 1680 slabhash_clear(worker->env.infra_cache->hosts); 1681 send_ok(ssl); 1682 return; 1683 } 1684 if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) { 1685 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg); 1686 return; 1687 } 1688 /* delete all entries from cache */ 1689 /* what we do is to set them all expired */ 1690 inf.worker = worker; 1691 inf.name = 0; 1692 inf.len = 0; 1693 inf.labs = 0; 1694 inf.expired = *worker->env.now; 1695 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1696 inf.num_rrsets = 0; 1697 inf.num_msgs = 0; 1698 inf.num_keys = 0; 1699 inf.addrlen = len; 1700 memmove(&inf.addr, &addr, len); 1701 slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host, 1702 &inf); 1703 send_ok(ssl); 1704 } 1705 1706 /** flush requestlist */ 1707 static void 1708 do_flush_requestlist(RES* ssl, struct worker* worker) 1709 { 1710 mesh_delete_all(worker->env.mesh); 1711 send_ok(ssl); 1712 } 1713 1714 /** callback to delete rrsets in a zone */ 1715 static void 1716 zone_del_rrset(struct lruhash_entry* e, void* arg) 1717 { 1718 /* entry is locked */ 1719 struct del_info* inf = (struct del_info*)arg; 1720 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key; 1721 if(dname_subdomain_c(k->rk.dname, inf->name)) { 1722 struct packed_rrset_data* d = 1723 (struct packed_rrset_data*)e->data; 1724 if(d->ttl > inf->expired) { 1725 d->ttl = inf->expired; 1726 inf->num_rrsets++; 1727 } 1728 } 1729 } 1730 1731 /** callback to delete messages in a zone */ 1732 static void 1733 zone_del_msg(struct lruhash_entry* e, void* arg) 1734 { 1735 /* entry is locked */ 1736 struct del_info* inf = (struct del_info*)arg; 1737 struct msgreply_entry* k = (struct msgreply_entry*)e->key; 1738 if(dname_subdomain_c(k->key.qname, inf->name)) { 1739 struct reply_info* d = (struct reply_info*)e->data; 1740 if(d->ttl > inf->expired) { 1741 d->ttl = inf->expired; 1742 d->prefetch_ttl = inf->expired; 1743 d->serve_expired_ttl = inf->expired; 1744 inf->num_msgs++; 1745 } 1746 } 1747 } 1748 1749 /** callback to delete keys in zone */ 1750 static void 1751 zone_del_kcache(struct lruhash_entry* e, void* arg) 1752 { 1753 /* entry is locked */ 1754 struct del_info* inf = (struct del_info*)arg; 1755 struct key_entry_key* k = (struct key_entry_key*)e->key; 1756 if(dname_subdomain_c(k->name, inf->name)) { 1757 struct key_entry_data* d = (struct key_entry_data*)e->data; 1758 if(d->ttl > inf->expired) { 1759 d->ttl = inf->expired; 1760 inf->num_keys++; 1761 } 1762 } 1763 } 1764 1765 /** remove all rrsets and keys from zone from cache */ 1766 static void 1767 do_flush_zone(RES* ssl, struct worker* worker, char* arg) 1768 { 1769 uint8_t* nm; 1770 int nmlabs; 1771 size_t nmlen; 1772 struct del_info inf; 1773 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1774 return; 1775 /* delete all RRs and key entries from zone */ 1776 /* what we do is to set them all expired */ 1777 inf.worker = worker; 1778 inf.name = nm; 1779 inf.len = nmlen; 1780 inf.labs = nmlabs; 1781 inf.expired = *worker->env.now; 1782 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1783 inf.num_rrsets = 0; 1784 inf.num_msgs = 0; 1785 inf.num_keys = 0; 1786 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1787 &zone_del_rrset, &inf); 1788 1789 slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf); 1790 1791 /* and validator cache */ 1792 if(worker->env.key_cache) { 1793 slabhash_traverse(worker->env.key_cache->slab, 1, 1794 &zone_del_kcache, &inf); 1795 } 1796 1797 free(nm); 1798 1799 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1800 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1801 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1802 } 1803 1804 /** callback to delete bogus rrsets */ 1805 static void 1806 bogus_del_rrset(struct lruhash_entry* e, void* arg) 1807 { 1808 /* entry is locked */ 1809 struct del_info* inf = (struct del_info*)arg; 1810 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data; 1811 if(d->security == sec_status_bogus) { 1812 d->ttl = inf->expired; 1813 inf->num_rrsets++; 1814 } 1815 } 1816 1817 /** callback to delete bogus messages */ 1818 static void 1819 bogus_del_msg(struct lruhash_entry* e, void* arg) 1820 { 1821 /* entry is locked */ 1822 struct del_info* inf = (struct del_info*)arg; 1823 struct reply_info* d = (struct reply_info*)e->data; 1824 if(d->security == sec_status_bogus) { 1825 d->ttl = inf->expired; 1826 inf->num_msgs++; 1827 } 1828 } 1829 1830 /** callback to delete bogus keys */ 1831 static void 1832 bogus_del_kcache(struct lruhash_entry* e, void* arg) 1833 { 1834 /* entry is locked */ 1835 struct del_info* inf = (struct del_info*)arg; 1836 struct key_entry_data* d = (struct key_entry_data*)e->data; 1837 if(d->isbad) { 1838 d->ttl = inf->expired; 1839 inf->num_keys++; 1840 } 1841 } 1842 1843 /** remove all bogus rrsets, msgs and keys from cache */ 1844 static void 1845 do_flush_bogus(RES* ssl, struct worker* worker) 1846 { 1847 struct del_info inf; 1848 /* what we do is to set them all expired */ 1849 inf.worker = worker; 1850 inf.expired = *worker->env.now; 1851 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1852 inf.num_rrsets = 0; 1853 inf.num_msgs = 0; 1854 inf.num_keys = 0; 1855 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1856 &bogus_del_rrset, &inf); 1857 1858 slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf); 1859 1860 /* and validator cache */ 1861 if(worker->env.key_cache) { 1862 slabhash_traverse(worker->env.key_cache->slab, 1, 1863 &bogus_del_kcache, &inf); 1864 } 1865 1866 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1867 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1868 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1869 } 1870 1871 /** callback to delete negative and servfail rrsets */ 1872 static void 1873 negative_del_rrset(struct lruhash_entry* e, void* arg) 1874 { 1875 /* entry is locked */ 1876 struct del_info* inf = (struct del_info*)arg; 1877 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key; 1878 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data; 1879 /* delete the parentside negative cache rrsets, 1880 * these are nameserver rrsets that failed lookup, rdata empty */ 1881 if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 && 1882 d->rrsig_count == 0 && d->rr_len[0] == 0) { 1883 d->ttl = inf->expired; 1884 inf->num_rrsets++; 1885 } 1886 } 1887 1888 /** callback to delete negative and servfail messages */ 1889 static void 1890 negative_del_msg(struct lruhash_entry* e, void* arg) 1891 { 1892 /* entry is locked */ 1893 struct del_info* inf = (struct del_info*)arg; 1894 struct reply_info* d = (struct reply_info*)e->data; 1895 /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error 1896 * or NOERROR rcode with ANCOUNT==0: a NODATA answer */ 1897 if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) { 1898 d->ttl = inf->expired; 1899 inf->num_msgs++; 1900 } 1901 } 1902 1903 /** callback to delete negative key entries */ 1904 static void 1905 negative_del_kcache(struct lruhash_entry* e, void* arg) 1906 { 1907 /* entry is locked */ 1908 struct del_info* inf = (struct del_info*)arg; 1909 struct key_entry_data* d = (struct key_entry_data*)e->data; 1910 /* could be bad because of lookup failure on the DS, DNSKEY, which 1911 * was nxdomain or servfail, and thus a result of negative lookups */ 1912 if(d->isbad) { 1913 d->ttl = inf->expired; 1914 inf->num_keys++; 1915 } 1916 } 1917 1918 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */ 1919 static void 1920 do_flush_negative(RES* ssl, struct worker* worker) 1921 { 1922 struct del_info inf; 1923 /* what we do is to set them all expired */ 1924 inf.worker = worker; 1925 inf.expired = *worker->env.now; 1926 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1927 inf.num_rrsets = 0; 1928 inf.num_msgs = 0; 1929 inf.num_keys = 0; 1930 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1931 &negative_del_rrset, &inf); 1932 1933 slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf); 1934 1935 /* and validator cache */ 1936 if(worker->env.key_cache) { 1937 slabhash_traverse(worker->env.key_cache->slab, 1, 1938 &negative_del_kcache, &inf); 1939 } 1940 1941 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1942 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1943 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1944 } 1945 1946 /** remove name rrset from cache */ 1947 static void 1948 do_flush_name(RES* ssl, struct worker* w, char* arg) 1949 { 1950 uint8_t* nm; 1951 int nmlabs; 1952 size_t nmlen; 1953 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1954 return; 1955 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN); 1956 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN); 1957 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN); 1958 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN); 1959 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN); 1960 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN); 1961 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN); 1962 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN); 1963 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN); 1964 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN); 1965 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SVCB, LDNS_RR_CLASS_IN); 1966 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_HTTPS, LDNS_RR_CLASS_IN); 1967 1968 free(nm); 1969 send_ok(ssl); 1970 } 1971 1972 /** printout a delegation point info */ 1973 static int 1974 ssl_print_name_dp(RES* ssl, const char* str, uint8_t* nm, uint16_t dclass, 1975 struct delegpt* dp) 1976 { 1977 char buf[257]; 1978 struct delegpt_ns* ns; 1979 struct delegpt_addr* a; 1980 int f = 0; 1981 if(str) { /* print header for forward, stub */ 1982 char* c = sldns_wire2str_class(dclass); 1983 dname_str(nm, buf); 1984 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) { 1985 free(c); 1986 return 0; 1987 } 1988 free(c); 1989 } 1990 for(ns = dp->nslist; ns; ns = ns->next) { 1991 dname_str(ns->name, buf); 1992 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1993 return 0; 1994 f = 1; 1995 } 1996 for(a = dp->target_list; a; a = a->next_target) { 1997 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf)); 1998 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1999 return 0; 2000 f = 1; 2001 } 2002 return ssl_printf(ssl, "\n"); 2003 } 2004 2005 2006 /** print root forwards */ 2007 static int 2008 print_root_fwds(RES* ssl, struct iter_forwards* fwds, uint8_t* root) 2009 { 2010 struct delegpt* dp; 2011 dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN); 2012 if(!dp) 2013 return ssl_printf(ssl, "off (using root hints)\n"); 2014 /* if dp is returned it must be the root */ 2015 log_assert(query_dname_compare(dp->name, root)==0); 2016 return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp); 2017 } 2018 2019 /** parse args into delegpt */ 2020 static struct delegpt* 2021 parse_delegpt(RES* ssl, char* args, uint8_t* nm) 2022 { 2023 /* parse args and add in */ 2024 char* p = args; 2025 char* todo; 2026 struct delegpt* dp = delegpt_create_mlc(nm); 2027 struct sockaddr_storage addr; 2028 socklen_t addrlen; 2029 char* auth_name; 2030 if(!dp) { 2031 (void)ssl_printf(ssl, "error out of memory\n"); 2032 return NULL; 2033 } 2034 while(p) { 2035 todo = p; 2036 p = strchr(p, ' '); /* find next spot, if any */ 2037 if(p) { 2038 *p++ = 0; /* end this spot */ 2039 p = skipwhite(p); /* position at next spot */ 2040 } 2041 /* parse address */ 2042 if(!authextstrtoaddr(todo, &addr, &addrlen, &auth_name)) { 2043 uint8_t* dname= NULL; 2044 int port; 2045 dname = authextstrtodname(todo, &port, &auth_name); 2046 if(!dname) { 2047 (void)ssl_printf(ssl, "error cannot parse" 2048 " '%s'\n", todo); 2049 delegpt_free_mlc(dp); 2050 return NULL; 2051 } 2052 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST) 2053 if(auth_name) 2054 log_err("no name verification functionality in " 2055 "ssl library, ignored name for %s", todo); 2056 #endif 2057 if(!delegpt_add_ns_mlc(dp, dname, 0, auth_name, port)) { 2058 (void)ssl_printf(ssl, "error out of memory\n"); 2059 free(dname); 2060 delegpt_free_mlc(dp); 2061 return NULL; 2062 } 2063 } else { 2064 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST) 2065 if(auth_name) 2066 log_err("no name verification functionality in " 2067 "ssl library, ignored name for %s", todo); 2068 #endif 2069 /* add address */ 2070 if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0, 2071 auth_name, -1)) { 2072 (void)ssl_printf(ssl, "error out of memory\n"); 2073 delegpt_free_mlc(dp); 2074 return NULL; 2075 } 2076 } 2077 } 2078 dp->has_parent_side_NS = 1; 2079 return dp; 2080 } 2081 2082 /** do the status command */ 2083 static void 2084 do_forward(RES* ssl, struct worker* worker, char* args) 2085 { 2086 struct iter_forwards* fwd = worker->env.fwds; 2087 uint8_t* root = (uint8_t*)"\000"; 2088 if(!fwd) { 2089 (void)ssl_printf(ssl, "error: structure not allocated\n"); 2090 return; 2091 } 2092 if(args == NULL || args[0] == 0) { 2093 (void)print_root_fwds(ssl, fwd, root); 2094 return; 2095 } 2096 /* set root forwards for this thread. since we are in remote control 2097 * the actual mesh is not running, so we can freely edit it. */ 2098 /* delete all the existing queries first */ 2099 mesh_delete_all(worker->env.mesh); 2100 if(strcmp(args, "off") == 0) { 2101 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root); 2102 } else { 2103 struct delegpt* dp; 2104 if(!(dp = parse_delegpt(ssl, args, root))) 2105 return; 2106 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 2107 (void)ssl_printf(ssl, "error out of memory\n"); 2108 return; 2109 } 2110 } 2111 send_ok(ssl); 2112 } 2113 2114 static int 2115 parse_fs_args(RES* ssl, char* args, uint8_t** nm, struct delegpt** dp, 2116 int* insecure, int* prime) 2117 { 2118 char* zonename; 2119 char* rest; 2120 size_t nmlen; 2121 int nmlabs; 2122 /* parse all -x args */ 2123 while(args[0] == '+') { 2124 if(!find_arg2(ssl, args, &rest)) 2125 return 0; 2126 while(*(++args) != 0) { 2127 if(*args == 'i' && insecure) 2128 *insecure = 1; 2129 else if(*args == 'p' && prime) 2130 *prime = 1; 2131 else { 2132 (void)ssl_printf(ssl, "error: unknown option %s\n", args); 2133 return 0; 2134 } 2135 } 2136 args = rest; 2137 } 2138 /* parse name */ 2139 if(dp) { 2140 if(!find_arg2(ssl, args, &rest)) 2141 return 0; 2142 zonename = args; 2143 args = rest; 2144 } else zonename = args; 2145 if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs)) 2146 return 0; 2147 2148 /* parse dp */ 2149 if(dp) { 2150 if(!(*dp = parse_delegpt(ssl, args, *nm))) { 2151 free(*nm); 2152 return 0; 2153 } 2154 } 2155 return 1; 2156 } 2157 2158 /** do the forward_add command */ 2159 static void 2160 do_forward_add(RES* ssl, struct worker* worker, char* args) 2161 { 2162 struct iter_forwards* fwd = worker->env.fwds; 2163 int insecure = 0; 2164 uint8_t* nm = NULL; 2165 struct delegpt* dp = NULL; 2166 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL)) 2167 return; 2168 if(insecure && worker->env.anchors) { 2169 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2170 nm)) { 2171 (void)ssl_printf(ssl, "error out of memory\n"); 2172 delegpt_free_mlc(dp); 2173 free(nm); 2174 return; 2175 } 2176 } 2177 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 2178 (void)ssl_printf(ssl, "error out of memory\n"); 2179 free(nm); 2180 return; 2181 } 2182 free(nm); 2183 send_ok(ssl); 2184 } 2185 2186 /** do the forward_remove command */ 2187 static void 2188 do_forward_remove(RES* ssl, struct worker* worker, char* args) 2189 { 2190 struct iter_forwards* fwd = worker->env.fwds; 2191 int insecure = 0; 2192 uint8_t* nm = NULL; 2193 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 2194 return; 2195 if(insecure && worker->env.anchors) 2196 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2197 nm); 2198 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm); 2199 free(nm); 2200 send_ok(ssl); 2201 } 2202 2203 /** do the stub_add command */ 2204 static void 2205 do_stub_add(RES* ssl, struct worker* worker, char* args) 2206 { 2207 struct iter_forwards* fwd = worker->env.fwds; 2208 int insecure = 0, prime = 0; 2209 uint8_t* nm = NULL; 2210 struct delegpt* dp = NULL; 2211 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime)) 2212 return; 2213 if(insecure && worker->env.anchors) { 2214 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2215 nm)) { 2216 (void)ssl_printf(ssl, "error out of memory\n"); 2217 delegpt_free_mlc(dp); 2218 free(nm); 2219 return; 2220 } 2221 } 2222 if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) { 2223 if(insecure && worker->env.anchors) 2224 anchors_delete_insecure(worker->env.anchors, 2225 LDNS_RR_CLASS_IN, nm); 2226 (void)ssl_printf(ssl, "error out of memory\n"); 2227 delegpt_free_mlc(dp); 2228 free(nm); 2229 return; 2230 } 2231 if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) { 2232 (void)ssl_printf(ssl, "error out of memory\n"); 2233 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 2234 if(insecure && worker->env.anchors) 2235 anchors_delete_insecure(worker->env.anchors, 2236 LDNS_RR_CLASS_IN, nm); 2237 free(nm); 2238 return; 2239 } 2240 free(nm); 2241 send_ok(ssl); 2242 } 2243 2244 /** do the stub_remove command */ 2245 static void 2246 do_stub_remove(RES* ssl, struct worker* worker, char* args) 2247 { 2248 struct iter_forwards* fwd = worker->env.fwds; 2249 int insecure = 0; 2250 uint8_t* nm = NULL; 2251 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 2252 return; 2253 if(insecure && worker->env.anchors) 2254 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2255 nm); 2256 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 2257 hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm); 2258 free(nm); 2259 send_ok(ssl); 2260 } 2261 2262 /** do the insecure_add command */ 2263 static void 2264 do_insecure_add(RES* ssl, struct worker* worker, char* arg) 2265 { 2266 size_t nmlen; 2267 int nmlabs; 2268 uint8_t* nm = NULL; 2269 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2270 return; 2271 if(worker->env.anchors) { 2272 if(!anchors_add_insecure(worker->env.anchors, 2273 LDNS_RR_CLASS_IN, nm)) { 2274 (void)ssl_printf(ssl, "error out of memory\n"); 2275 free(nm); 2276 return; 2277 } 2278 } 2279 free(nm); 2280 send_ok(ssl); 2281 } 2282 2283 /** do the insecure_remove command */ 2284 static void 2285 do_insecure_remove(RES* ssl, struct worker* worker, char* arg) 2286 { 2287 size_t nmlen; 2288 int nmlabs; 2289 uint8_t* nm = NULL; 2290 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2291 return; 2292 if(worker->env.anchors) 2293 anchors_delete_insecure(worker->env.anchors, 2294 LDNS_RR_CLASS_IN, nm); 2295 free(nm); 2296 send_ok(ssl); 2297 } 2298 2299 static void 2300 do_insecure_list(RES* ssl, struct worker* worker) 2301 { 2302 char buf[257]; 2303 struct trust_anchor* a; 2304 if(worker->env.anchors) { 2305 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) { 2306 if(a->numDS == 0 && a->numDNSKEY == 0) { 2307 dname_str(a->name, buf); 2308 ssl_printf(ssl, "%s\n", buf); 2309 } 2310 } 2311 } 2312 } 2313 2314 /** do the status command */ 2315 static void 2316 do_status(RES* ssl, struct worker* worker) 2317 { 2318 int i; 2319 time_t uptime; 2320 if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION)) 2321 return; 2322 if(!ssl_printf(ssl, "verbosity: %d\n", verbosity)) 2323 return; 2324 if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num)) 2325 return; 2326 if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num)) 2327 return; 2328 for(i=0; i<worker->daemon->mods.num; i++) { 2329 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name)) 2330 return; 2331 } 2332 if(!ssl_printf(ssl, " ]\n")) 2333 return; 2334 uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec; 2335 if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime)) 2336 return; 2337 if(!ssl_printf(ssl, "options:%s%s%s%s\n" , 2338 (worker->daemon->reuseport?" reuseport":""), 2339 (worker->daemon->rc->accept_list?" control":""), 2340 (worker->daemon->rc->accept_list && worker->daemon->rc->use_cert?"(ssl)":""), 2341 (worker->daemon->rc->accept_list && worker->daemon->cfg->control_ifs.first && worker->daemon->cfg->control_ifs.first->str && worker->daemon->cfg->control_ifs.first->str[0] == '/'?"(namedpipe)":"") 2342 )) 2343 return; 2344 if(!ssl_printf(ssl, "unbound (pid %d) is running...\n", 2345 (int)getpid())) 2346 return; 2347 } 2348 2349 /** get age for the mesh state */ 2350 static void 2351 get_mesh_age(struct mesh_state* m, char* buf, size_t len, 2352 struct module_env* env) 2353 { 2354 if(m->reply_list) { 2355 struct timeval d; 2356 struct mesh_reply* r = m->reply_list; 2357 /* last reply is the oldest */ 2358 while(r && r->next) 2359 r = r->next; 2360 timeval_subtract(&d, env->now_tv, &r->start_time); 2361 snprintf(buf, len, ARG_LL "d.%6.6d", 2362 (long long)d.tv_sec, (int)d.tv_usec); 2363 } else { 2364 snprintf(buf, len, "-"); 2365 } 2366 } 2367 2368 /** get status of a mesh state */ 2369 static void 2370 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m, 2371 char* buf, size_t len) 2372 { 2373 enum module_ext_state s = m->s.ext_state[m->s.curmod]; 2374 const char *modname = mesh->mods.mod[m->s.curmod]->name; 2375 size_t l; 2376 if(strcmp(modname, "iterator") == 0 && s == module_wait_reply && 2377 m->s.minfo[m->s.curmod]) { 2378 /* break into iterator to find out who its waiting for */ 2379 struct iter_qstate* qstate = (struct iter_qstate*) 2380 m->s.minfo[m->s.curmod]; 2381 struct outbound_list* ol = &qstate->outlist; 2382 struct outbound_entry* e; 2383 snprintf(buf, len, "%s wait for", modname); 2384 l = strlen(buf); 2385 buf += l; len -= l; 2386 if(ol->first == NULL) 2387 snprintf(buf, len, " (empty_list)"); 2388 for(e = ol->first; e; e = e->next) { 2389 snprintf(buf, len, " "); 2390 l = strlen(buf); 2391 buf += l; len -= l; 2392 addr_to_str(&e->qsent->addr, e->qsent->addrlen, 2393 buf, len); 2394 l = strlen(buf); 2395 buf += l; len -= l; 2396 } 2397 } else if(s == module_wait_subquery) { 2398 /* look in subs from mesh state to see what */ 2399 char nm[257]; 2400 struct mesh_state_ref* sub; 2401 snprintf(buf, len, "%s wants", modname); 2402 l = strlen(buf); 2403 buf += l; len -= l; 2404 if(m->sub_set.count == 0) 2405 snprintf(buf, len, " (empty_list)"); 2406 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) { 2407 char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype); 2408 char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass); 2409 dname_str(sub->s->s.qinfo.qname, nm); 2410 snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"), 2411 (c?c:"CLASS??"), nm); 2412 l = strlen(buf); 2413 buf += l; len -= l; 2414 free(t); 2415 free(c); 2416 } 2417 } else { 2418 snprintf(buf, len, "%s is %s", modname, strextstate(s)); 2419 } 2420 } 2421 2422 /** do the dump_requestlist command */ 2423 static void 2424 do_dump_requestlist(RES* ssl, struct worker* worker) 2425 { 2426 struct mesh_area* mesh; 2427 struct mesh_state* m; 2428 int num = 0; 2429 char buf[257]; 2430 char timebuf[32]; 2431 char statbuf[10240]; 2432 if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num)) 2433 return; 2434 if(!ssl_printf(ssl, "# type cl name seconds module status\n")) 2435 return; 2436 /* show worker mesh contents */ 2437 mesh = worker->env.mesh; 2438 if(!mesh) return; 2439 RBTREE_FOR(m, struct mesh_state*, &mesh->all) { 2440 char* t = sldns_wire2str_type(m->s.qinfo.qtype); 2441 char* c = sldns_wire2str_class(m->s.qinfo.qclass); 2442 dname_str(m->s.qinfo.qname, buf); 2443 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env); 2444 get_mesh_status(mesh, m, statbuf, sizeof(statbuf)); 2445 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n", 2446 num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf, 2447 statbuf)) { 2448 free(t); 2449 free(c); 2450 return; 2451 } 2452 num++; 2453 free(t); 2454 free(c); 2455 } 2456 } 2457 2458 /** structure for argument data for dump infra host */ 2459 struct infra_arg { 2460 /** the infra cache */ 2461 struct infra_cache* infra; 2462 /** the SSL connection */ 2463 RES* ssl; 2464 /** the time now */ 2465 time_t now; 2466 /** ssl failure? stop writing and skip the rest. If the tcp 2467 * connection is broken, and writes fail, we then stop writing. */ 2468 int ssl_failed; 2469 }; 2470 2471 /** callback for every host element in the infra cache */ 2472 static void 2473 dump_infra_host(struct lruhash_entry* e, void* arg) 2474 { 2475 struct infra_arg* a = (struct infra_arg*)arg; 2476 struct infra_key* k = (struct infra_key*)e->key; 2477 struct infra_data* d = (struct infra_data*)e->data; 2478 char ip_str[1024]; 2479 char name[257]; 2480 int port; 2481 if(a->ssl_failed) 2482 return; 2483 addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str)); 2484 dname_str(k->zonename, name); 2485 port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port); 2486 if(port != UNBOUND_DNS_PORT) { 2487 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str), 2488 "@%d", port); 2489 } 2490 /* skip expired stuff (only backed off) */ 2491 if(d->ttl < a->now) { 2492 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) { 2493 if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str, 2494 name, d->rtt.rto)) { 2495 a->ssl_failed = 1; 2496 return; 2497 } 2498 } 2499 return; 2500 } 2501 if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d " 2502 "tA %d tAAAA %d tother %d " 2503 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d " 2504 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now), 2505 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto, 2506 d->timeout_A, d->timeout_AAAA, d->timeout_other, 2507 (int)d->edns_lame_known, (int)d->edns_version, 2508 (int)(a->now<d->probedelay?(d->probedelay - a->now):0), 2509 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A, 2510 (int)d->lame_other)) { 2511 a->ssl_failed = 1; 2512 return; 2513 } 2514 } 2515 2516 /** do the dump_infra command */ 2517 static void 2518 do_dump_infra(RES* ssl, struct worker* worker) 2519 { 2520 struct infra_arg arg; 2521 arg.infra = worker->env.infra_cache; 2522 arg.ssl = ssl; 2523 arg.now = *worker->env.now; 2524 arg.ssl_failed = 0; 2525 slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg); 2526 } 2527 2528 /** do the log_reopen command */ 2529 static void 2530 do_log_reopen(RES* ssl, struct worker* worker) 2531 { 2532 struct config_file* cfg = worker->env.cfg; 2533 send_ok(ssl); 2534 log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir); 2535 } 2536 2537 /** do the auth_zone_reload command */ 2538 static void 2539 do_auth_zone_reload(RES* ssl, struct worker* worker, char* arg) 2540 { 2541 size_t nmlen; 2542 int nmlabs; 2543 uint8_t* nm = NULL; 2544 struct auth_zones* az = worker->env.auth_zones; 2545 struct auth_zone* z = NULL; 2546 struct auth_xfer* xfr = NULL; 2547 char* reason = NULL; 2548 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2549 return; 2550 if(az) { 2551 lock_rw_rdlock(&az->lock); 2552 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN); 2553 if(z) { 2554 lock_rw_wrlock(&z->lock); 2555 } 2556 xfr = auth_xfer_find(az, nm, nmlen, LDNS_RR_CLASS_IN); 2557 if(xfr) { 2558 lock_basic_lock(&xfr->lock); 2559 } 2560 lock_rw_unlock(&az->lock); 2561 } 2562 free(nm); 2563 if(!z) { 2564 if(xfr) { 2565 lock_basic_unlock(&xfr->lock); 2566 } 2567 (void)ssl_printf(ssl, "error no auth-zone %s\n", arg); 2568 return; 2569 } 2570 if(!auth_zone_read_zonefile(z, worker->env.cfg)) { 2571 lock_rw_unlock(&z->lock); 2572 if(xfr) { 2573 lock_basic_unlock(&xfr->lock); 2574 } 2575 (void)ssl_printf(ssl, "error failed to read %s\n", arg); 2576 return; 2577 } 2578 2579 z->zone_expired = 0; 2580 if(xfr) { 2581 xfr->zone_expired = 0; 2582 if(!xfr_find_soa(z, xfr)) { 2583 if(z->data.count == 0) { 2584 lock_rw_unlock(&z->lock); 2585 lock_basic_unlock(&xfr->lock); 2586 (void)ssl_printf(ssl, "zone %s has no contents\n", arg); 2587 return; 2588 } 2589 lock_rw_unlock(&z->lock); 2590 lock_basic_unlock(&xfr->lock); 2591 (void)ssl_printf(ssl, "error: no SOA in zone after read %s\n", arg); 2592 return; 2593 } 2594 if(xfr->have_zone) 2595 xfr->lease_time = *worker->env.now; 2596 lock_basic_unlock(&xfr->lock); 2597 } 2598 2599 auth_zone_verify_zonemd(z, &worker->env, &worker->env.mesh->mods, 2600 &reason, 0, 0); 2601 if(reason && z->zone_expired) { 2602 lock_rw_unlock(&z->lock); 2603 (void)ssl_printf(ssl, "error zonemd for %s failed: %s\n", 2604 arg, reason); 2605 free(reason); 2606 return; 2607 } else if(reason && strcmp(reason, "ZONEMD verification successful") 2608 ==0) { 2609 (void)ssl_printf(ssl, "%s: %s\n", arg, reason); 2610 } 2611 lock_rw_unlock(&z->lock); 2612 free(reason); 2613 send_ok(ssl); 2614 } 2615 2616 /** do the auth_zone_transfer command */ 2617 static void 2618 do_auth_zone_transfer(RES* ssl, struct worker* worker, char* arg) 2619 { 2620 size_t nmlen; 2621 int nmlabs; 2622 uint8_t* nm = NULL; 2623 struct auth_zones* az = worker->env.auth_zones; 2624 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2625 return; 2626 if(!az || !auth_zones_startprobesequence(az, &worker->env, nm, nmlen, 2627 LDNS_RR_CLASS_IN)) { 2628 (void)ssl_printf(ssl, "error zone xfr task not found %s\n", arg); 2629 free(nm); 2630 return; 2631 } 2632 free(nm); 2633 send_ok(ssl); 2634 } 2635 2636 /** do the set_option command */ 2637 static void 2638 do_set_option(RES* ssl, struct worker* worker, char* arg) 2639 { 2640 char* arg2; 2641 if(!find_arg2(ssl, arg, &arg2)) 2642 return; 2643 if(!config_set_option(worker->env.cfg, arg, arg2)) { 2644 (void)ssl_printf(ssl, "error setting option\n"); 2645 return; 2646 } 2647 /* effectuate some arguments */ 2648 if(strcmp(arg, "val-override-date:") == 0) { 2649 int m = modstack_find(&worker->env.mesh->mods, "validator"); 2650 struct val_env* val_env = NULL; 2651 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m]; 2652 if(val_env) 2653 val_env->date_override = worker->env.cfg->val_date_override; 2654 } 2655 send_ok(ssl); 2656 } 2657 2658 /* routine to printout option values over SSL */ 2659 void remote_get_opt_ssl(char* line, void* arg) 2660 { 2661 RES* ssl = (RES*)arg; 2662 (void)ssl_printf(ssl, "%s\n", line); 2663 } 2664 2665 /** do the get_option command */ 2666 static void 2667 do_get_option(RES* ssl, struct worker* worker, char* arg) 2668 { 2669 int r; 2670 r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl); 2671 if(!r) { 2672 (void)ssl_printf(ssl, "error unknown option\n"); 2673 return; 2674 } 2675 } 2676 2677 /** do the list_forwards command */ 2678 static void 2679 do_list_forwards(RES* ssl, struct worker* worker) 2680 { 2681 /* since its a per-worker structure no locks needed */ 2682 struct iter_forwards* fwds = worker->env.fwds; 2683 struct iter_forward_zone* z; 2684 struct trust_anchor* a; 2685 int insecure; 2686 RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) { 2687 if(!z->dp) continue; /* skip empty marker for stub */ 2688 2689 /* see if it is insecure */ 2690 insecure = 0; 2691 if(worker->env.anchors && 2692 (a=anchor_find(worker->env.anchors, z->name, 2693 z->namelabs, z->namelen, z->dclass))) { 2694 if(!a->keylist && !a->numDS && !a->numDNSKEY) 2695 insecure = 1; 2696 lock_basic_unlock(&a->lock); 2697 } 2698 2699 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"), 2700 z->name, z->dclass, z->dp)) 2701 return; 2702 } 2703 } 2704 2705 /** do the list_stubs command */ 2706 static void 2707 do_list_stubs(RES* ssl, struct worker* worker) 2708 { 2709 struct iter_hints_stub* z; 2710 struct trust_anchor* a; 2711 int insecure; 2712 char str[32]; 2713 RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) { 2714 2715 /* see if it is insecure */ 2716 insecure = 0; 2717 if(worker->env.anchors && 2718 (a=anchor_find(worker->env.anchors, z->node.name, 2719 z->node.labs, z->node.len, z->node.dclass))) { 2720 if(!a->keylist && !a->numDS && !a->numDNSKEY) 2721 insecure = 1; 2722 lock_basic_unlock(&a->lock); 2723 } 2724 2725 snprintf(str, sizeof(str), "stub %sprime%s", 2726 (z->noprime?"no":""), (insecure?" +i":"")); 2727 if(!ssl_print_name_dp(ssl, str, z->node.name, 2728 z->node.dclass, z->dp)) 2729 return; 2730 } 2731 } 2732 2733 /** do the list_auth_zones command */ 2734 static void 2735 do_list_auth_zones(RES* ssl, struct auth_zones* az) 2736 { 2737 struct auth_zone* z; 2738 char buf[257], buf2[256]; 2739 lock_rw_rdlock(&az->lock); 2740 RBTREE_FOR(z, struct auth_zone*, &az->ztree) { 2741 lock_rw_rdlock(&z->lock); 2742 dname_str(z->name, buf); 2743 if(z->zone_expired) 2744 snprintf(buf2, sizeof(buf2), "expired"); 2745 else { 2746 uint32_t serial = 0; 2747 if(auth_zone_get_serial(z, &serial)) 2748 snprintf(buf2, sizeof(buf2), "serial %u", 2749 (unsigned)serial); 2750 else snprintf(buf2, sizeof(buf2), "no serial"); 2751 } 2752 if(!ssl_printf(ssl, "%s\t%s\n", buf, buf2)) { 2753 /* failure to print */ 2754 lock_rw_unlock(&z->lock); 2755 lock_rw_unlock(&az->lock); 2756 return; 2757 } 2758 lock_rw_unlock(&z->lock); 2759 } 2760 lock_rw_unlock(&az->lock); 2761 } 2762 2763 /** do the list_local_zones command */ 2764 static void 2765 do_list_local_zones(RES* ssl, struct local_zones* zones) 2766 { 2767 struct local_zone* z; 2768 char buf[257]; 2769 lock_rw_rdlock(&zones->lock); 2770 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 2771 lock_rw_rdlock(&z->lock); 2772 dname_str(z->name, buf); 2773 if(!ssl_printf(ssl, "%s %s\n", buf, 2774 local_zone_type2str(z->type))) { 2775 /* failure to print */ 2776 lock_rw_unlock(&z->lock); 2777 lock_rw_unlock(&zones->lock); 2778 return; 2779 } 2780 lock_rw_unlock(&z->lock); 2781 } 2782 lock_rw_unlock(&zones->lock); 2783 } 2784 2785 /** do the list_local_data command */ 2786 static void 2787 do_list_local_data(RES* ssl, struct worker* worker, struct local_zones* zones) 2788 { 2789 struct local_zone* z; 2790 struct local_data* d; 2791 struct local_rrset* p; 2792 char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer); 2793 size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer); 2794 lock_rw_rdlock(&zones->lock); 2795 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 2796 lock_rw_rdlock(&z->lock); 2797 RBTREE_FOR(d, struct local_data*, &z->data) { 2798 for(p = d->rrsets; p; p = p->next) { 2799 struct packed_rrset_data* d = 2800 (struct packed_rrset_data*)p->rrset->entry.data; 2801 size_t i; 2802 for(i=0; i<d->count + d->rrsig_count; i++) { 2803 if(!packed_rr_to_string(p->rrset, i, 2804 0, s, slen)) { 2805 if(!ssl_printf(ssl, "BADRR\n")) { 2806 lock_rw_unlock(&z->lock); 2807 lock_rw_unlock(&zones->lock); 2808 return; 2809 } 2810 } 2811 if(!ssl_printf(ssl, "%s\n", s)) { 2812 lock_rw_unlock(&z->lock); 2813 lock_rw_unlock(&zones->lock); 2814 return; 2815 } 2816 } 2817 } 2818 } 2819 lock_rw_unlock(&z->lock); 2820 } 2821 lock_rw_unlock(&zones->lock); 2822 } 2823 2824 /** do the view_list_local_zones command */ 2825 static void 2826 do_view_list_local_zones(RES* ssl, struct worker* worker, char* arg) 2827 { 2828 struct view* v = views_find_view(worker->daemon->views, 2829 arg, 0 /* get read lock*/); 2830 if(!v) { 2831 ssl_printf(ssl,"no view with name: %s\n", arg); 2832 return; 2833 } 2834 if(v->local_zones) { 2835 do_list_local_zones(ssl, v->local_zones); 2836 } 2837 lock_rw_unlock(&v->lock); 2838 } 2839 2840 /** do the view_list_local_data command */ 2841 static void 2842 do_view_list_local_data(RES* ssl, struct worker* worker, char* arg) 2843 { 2844 struct view* v = views_find_view(worker->daemon->views, 2845 arg, 0 /* get read lock*/); 2846 if(!v) { 2847 ssl_printf(ssl,"no view with name: %s\n", arg); 2848 return; 2849 } 2850 if(v->local_zones) { 2851 do_list_local_data(ssl, worker, v->local_zones); 2852 } 2853 lock_rw_unlock(&v->lock); 2854 } 2855 2856 /** struct for user arg ratelimit list */ 2857 struct ratelimit_list_arg { 2858 /** the infra cache */ 2859 struct infra_cache* infra; 2860 /** the SSL to print to */ 2861 RES* ssl; 2862 /** all or only ratelimited */ 2863 int all; 2864 /** current time */ 2865 time_t now; 2866 /** if backoff is enabled */ 2867 int backoff; 2868 }; 2869 2870 #define ip_ratelimit_list_arg ratelimit_list_arg 2871 2872 /** list items in the ratelimit table */ 2873 static void 2874 rate_list(struct lruhash_entry* e, void* arg) 2875 { 2876 struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg; 2877 struct rate_key* k = (struct rate_key*)e->key; 2878 struct rate_data* d = (struct rate_data*)e->data; 2879 char buf[257]; 2880 int lim = infra_find_ratelimit(a->infra, k->name, k->namelen); 2881 int max = infra_rate_max(d, a->now, a->backoff); 2882 if(a->all == 0) { 2883 if(max < lim) 2884 return; 2885 } 2886 dname_str(k->name, buf); 2887 ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim); 2888 } 2889 2890 /** list items in the ip_ratelimit table */ 2891 static void 2892 ip_rate_list(struct lruhash_entry* e, void* arg) 2893 { 2894 char ip[128]; 2895 struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg; 2896 struct ip_rate_key* k = (struct ip_rate_key*)e->key; 2897 struct ip_rate_data* d = (struct ip_rate_data*)e->data; 2898 int lim = infra_ip_ratelimit; 2899 int max = infra_rate_max(d, a->now, a->backoff); 2900 if(a->all == 0) { 2901 if(max < lim) 2902 return; 2903 } 2904 addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip)); 2905 ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim); 2906 } 2907 2908 /** do the ratelimit_list command */ 2909 static void 2910 do_ratelimit_list(RES* ssl, struct worker* worker, char* arg) 2911 { 2912 struct ratelimit_list_arg a; 2913 a.all = 0; 2914 a.infra = worker->env.infra_cache; 2915 a.now = *worker->env.now; 2916 a.ssl = ssl; 2917 a.backoff = worker->env.cfg->ratelimit_backoff; 2918 arg = skipwhite(arg); 2919 if(strcmp(arg, "+a") == 0) 2920 a.all = 1; 2921 if(a.infra->domain_rates==NULL || 2922 (a.all == 0 && infra_dp_ratelimit == 0)) 2923 return; 2924 slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a); 2925 } 2926 2927 /** do the ip_ratelimit_list command */ 2928 static void 2929 do_ip_ratelimit_list(RES* ssl, struct worker* worker, char* arg) 2930 { 2931 struct ip_ratelimit_list_arg a; 2932 a.all = 0; 2933 a.infra = worker->env.infra_cache; 2934 a.now = *worker->env.now; 2935 a.ssl = ssl; 2936 a.backoff = worker->env.cfg->ip_ratelimit_backoff; 2937 arg = skipwhite(arg); 2938 if(strcmp(arg, "+a") == 0) 2939 a.all = 1; 2940 if(a.infra->client_ip_rates==NULL || 2941 (a.all == 0 && infra_ip_ratelimit == 0)) 2942 return; 2943 slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a); 2944 } 2945 2946 /** do the rpz_enable/disable command */ 2947 static void 2948 do_rpz_enable_disable(RES* ssl, struct worker* worker, char* arg, int enable) { 2949 size_t nmlen; 2950 int nmlabs; 2951 uint8_t *nm = NULL; 2952 struct auth_zones *az = worker->env.auth_zones; 2953 struct auth_zone *z = NULL; 2954 if (!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2955 return; 2956 if (az) { 2957 lock_rw_rdlock(&az->lock); 2958 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN); 2959 if (z) { 2960 lock_rw_wrlock(&z->lock); 2961 } 2962 lock_rw_unlock(&az->lock); 2963 } 2964 free(nm); 2965 if (!z) { 2966 (void) ssl_printf(ssl, "error no auth-zone %s\n", arg); 2967 return; 2968 } 2969 if (!z->rpz) { 2970 (void) ssl_printf(ssl, "error auth-zone %s not RPZ\n", arg); 2971 lock_rw_unlock(&z->lock); 2972 return; 2973 } 2974 if (enable) { 2975 rpz_enable(z->rpz); 2976 } else { 2977 rpz_disable(z->rpz); 2978 } 2979 lock_rw_unlock(&z->lock); 2980 send_ok(ssl); 2981 } 2982 2983 /** do the rpz_enable command */ 2984 static void 2985 do_rpz_enable(RES* ssl, struct worker* worker, char* arg) 2986 { 2987 do_rpz_enable_disable(ssl, worker, arg, 1); 2988 } 2989 2990 /** do the rpz_disable command */ 2991 static void 2992 do_rpz_disable(RES* ssl, struct worker* worker, char* arg) 2993 { 2994 do_rpz_enable_disable(ssl, worker, arg, 0); 2995 } 2996 2997 /** tell other processes to execute the command */ 2998 static void 2999 distribute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd) 3000 { 3001 int i; 3002 if(!cmd || !ssl) 3003 return; 3004 /* skip i=0 which is me */ 3005 for(i=1; i<rc->worker->daemon->num; i++) { 3006 worker_send_cmd(rc->worker->daemon->workers[i], 3007 worker_cmd_remote); 3008 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd, 3009 (uint8_t*)cmd, strlen(cmd)+1, 0)) { 3010 ssl_printf(ssl, "error could not distribute cmd\n"); 3011 return; 3012 } 3013 } 3014 } 3015 3016 /** check for name with end-of-string, space or tab after it */ 3017 static int 3018 cmdcmp(char* p, const char* cmd, size_t len) 3019 { 3020 return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t'); 3021 } 3022 3023 /** execute a remote control command */ 3024 static void 3025 execute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd, 3026 struct worker* worker) 3027 { 3028 char* p = skipwhite(cmd); 3029 /* compare command */ 3030 if(cmdcmp(p, "stop", 4)) { 3031 do_stop(ssl, worker); 3032 return; 3033 } else if(cmdcmp(p, "reload_keep_cache", 17)) { 3034 do_reload(ssl, worker, 1); 3035 return; 3036 } else if(cmdcmp(p, "reload", 6)) { 3037 do_reload(ssl, worker, 0); 3038 return; 3039 } else if(cmdcmp(p, "stats_noreset", 13)) { 3040 do_stats(ssl, worker, 0); 3041 return; 3042 } else if(cmdcmp(p, "stats", 5)) { 3043 do_stats(ssl, worker, 1); 3044 return; 3045 } else if(cmdcmp(p, "status", 6)) { 3046 do_status(ssl, worker); 3047 return; 3048 } else if(cmdcmp(p, "dump_cache", 10)) { 3049 (void)dump_cache(ssl, worker); 3050 return; 3051 } else if(cmdcmp(p, "load_cache", 10)) { 3052 if(load_cache(ssl, worker)) send_ok(ssl); 3053 return; 3054 } else if(cmdcmp(p, "list_forwards", 13)) { 3055 do_list_forwards(ssl, worker); 3056 return; 3057 } else if(cmdcmp(p, "list_stubs", 10)) { 3058 do_list_stubs(ssl, worker); 3059 return; 3060 } else if(cmdcmp(p, "list_insecure", 13)) { 3061 do_insecure_list(ssl, worker); 3062 return; 3063 } else if(cmdcmp(p, "list_local_zones", 16)) { 3064 do_list_local_zones(ssl, worker->daemon->local_zones); 3065 return; 3066 } else if(cmdcmp(p, "list_local_data", 15)) { 3067 do_list_local_data(ssl, worker, worker->daemon->local_zones); 3068 return; 3069 } else if(cmdcmp(p, "view_list_local_zones", 21)) { 3070 do_view_list_local_zones(ssl, worker, skipwhite(p+21)); 3071 return; 3072 } else if(cmdcmp(p, "view_list_local_data", 20)) { 3073 do_view_list_local_data(ssl, worker, skipwhite(p+20)); 3074 return; 3075 } else if(cmdcmp(p, "ratelimit_list", 14)) { 3076 do_ratelimit_list(ssl, worker, p+14); 3077 return; 3078 } else if(cmdcmp(p, "ip_ratelimit_list", 17)) { 3079 do_ip_ratelimit_list(ssl, worker, p+17); 3080 return; 3081 } else if(cmdcmp(p, "list_auth_zones", 15)) { 3082 do_list_auth_zones(ssl, worker->env.auth_zones); 3083 return; 3084 } else if(cmdcmp(p, "auth_zone_reload", 16)) { 3085 do_auth_zone_reload(ssl, worker, skipwhite(p+16)); 3086 return; 3087 } else if(cmdcmp(p, "auth_zone_transfer", 18)) { 3088 do_auth_zone_transfer(ssl, worker, skipwhite(p+18)); 3089 return; 3090 } else if(cmdcmp(p, "stub_add", 8)) { 3091 /* must always distribute this cmd */ 3092 if(rc) distribute_cmd(rc, ssl, cmd); 3093 do_stub_add(ssl, worker, skipwhite(p+8)); 3094 return; 3095 } else if(cmdcmp(p, "stub_remove", 11)) { 3096 /* must always distribute this cmd */ 3097 if(rc) distribute_cmd(rc, ssl, cmd); 3098 do_stub_remove(ssl, worker, skipwhite(p+11)); 3099 return; 3100 } else if(cmdcmp(p, "forward_add", 11)) { 3101 /* must always distribute this cmd */ 3102 if(rc) distribute_cmd(rc, ssl, cmd); 3103 do_forward_add(ssl, worker, skipwhite(p+11)); 3104 return; 3105 } else if(cmdcmp(p, "forward_remove", 14)) { 3106 /* must always distribute this cmd */ 3107 if(rc) distribute_cmd(rc, ssl, cmd); 3108 do_forward_remove(ssl, worker, skipwhite(p+14)); 3109 return; 3110 } else if(cmdcmp(p, "insecure_add", 12)) { 3111 /* must always distribute this cmd */ 3112 if(rc) distribute_cmd(rc, ssl, cmd); 3113 do_insecure_add(ssl, worker, skipwhite(p+12)); 3114 return; 3115 } else if(cmdcmp(p, "insecure_remove", 15)) { 3116 /* must always distribute this cmd */ 3117 if(rc) distribute_cmd(rc, ssl, cmd); 3118 do_insecure_remove(ssl, worker, skipwhite(p+15)); 3119 return; 3120 } else if(cmdcmp(p, "forward", 7)) { 3121 /* must always distribute this cmd */ 3122 if(rc) distribute_cmd(rc, ssl, cmd); 3123 do_forward(ssl, worker, skipwhite(p+7)); 3124 return; 3125 } else if(cmdcmp(p, "flush_stats", 11)) { 3126 /* must always distribute this cmd */ 3127 if(rc) distribute_cmd(rc, ssl, cmd); 3128 do_flush_stats(ssl, worker); 3129 return; 3130 } else if(cmdcmp(p, "flush_requestlist", 17)) { 3131 /* must always distribute this cmd */ 3132 if(rc) distribute_cmd(rc, ssl, cmd); 3133 do_flush_requestlist(ssl, worker); 3134 return; 3135 } else if(cmdcmp(p, "lookup", 6)) { 3136 do_lookup(ssl, worker, skipwhite(p+6)); 3137 return; 3138 } 3139 3140 #ifdef THREADS_DISABLED 3141 /* other processes must execute the command as well */ 3142 /* commands that should not be distributed, returned above. */ 3143 if(rc) { /* only if this thread is the master (rc) thread */ 3144 /* done before the code below, which may split the string */ 3145 distribute_cmd(rc, ssl, cmd); 3146 } 3147 #endif 3148 if(cmdcmp(p, "verbosity", 9)) { 3149 do_verbosity(ssl, skipwhite(p+9)); 3150 } else if(cmdcmp(p, "local_zone_remove", 17)) { 3151 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17)); 3152 } else if(cmdcmp(p, "local_zones_remove", 18)) { 3153 do_zones_remove(ssl, worker->daemon->local_zones); 3154 } else if(cmdcmp(p, "local_zone", 10)) { 3155 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10)); 3156 } else if(cmdcmp(p, "local_zones", 11)) { 3157 do_zones_add(ssl, worker->daemon->local_zones); 3158 } else if(cmdcmp(p, "local_data_remove", 17)) { 3159 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17)); 3160 } else if(cmdcmp(p, "local_datas_remove", 18)) { 3161 do_datas_remove(ssl, worker->daemon->local_zones); 3162 } else if(cmdcmp(p, "local_data", 10)) { 3163 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10)); 3164 } else if(cmdcmp(p, "local_datas", 11)) { 3165 do_datas_add(ssl, worker->daemon->local_zones); 3166 } else if(cmdcmp(p, "view_local_zone_remove", 22)) { 3167 do_view_zone_remove(ssl, worker, skipwhite(p+22)); 3168 } else if(cmdcmp(p, "view_local_zone", 15)) { 3169 do_view_zone_add(ssl, worker, skipwhite(p+15)); 3170 } else if(cmdcmp(p, "view_local_data_remove", 22)) { 3171 do_view_data_remove(ssl, worker, skipwhite(p+22)); 3172 } else if(cmdcmp(p, "view_local_datas_remove", 23)){ 3173 do_view_datas_remove(ssl, worker, skipwhite(p+23)); 3174 } else if(cmdcmp(p, "view_local_data", 15)) { 3175 do_view_data_add(ssl, worker, skipwhite(p+15)); 3176 } else if(cmdcmp(p, "view_local_datas", 16)) { 3177 do_view_datas_add(ssl, worker, skipwhite(p+16)); 3178 } else if(cmdcmp(p, "flush_zone", 10)) { 3179 do_flush_zone(ssl, worker, skipwhite(p+10)); 3180 } else if(cmdcmp(p, "flush_type", 10)) { 3181 do_flush_type(ssl, worker, skipwhite(p+10)); 3182 } else if(cmdcmp(p, "flush_infra", 11)) { 3183 do_flush_infra(ssl, worker, skipwhite(p+11)); 3184 } else if(cmdcmp(p, "flush", 5)) { 3185 do_flush_name(ssl, worker, skipwhite(p+5)); 3186 } else if(cmdcmp(p, "dump_requestlist", 16)) { 3187 do_dump_requestlist(ssl, worker); 3188 } else if(cmdcmp(p, "dump_infra", 10)) { 3189 do_dump_infra(ssl, worker); 3190 } else if(cmdcmp(p, "log_reopen", 10)) { 3191 do_log_reopen(ssl, worker); 3192 } else if(cmdcmp(p, "set_option", 10)) { 3193 do_set_option(ssl, worker, skipwhite(p+10)); 3194 } else if(cmdcmp(p, "get_option", 10)) { 3195 do_get_option(ssl, worker, skipwhite(p+10)); 3196 } else if(cmdcmp(p, "flush_bogus", 11)) { 3197 do_flush_bogus(ssl, worker); 3198 } else if(cmdcmp(p, "flush_negative", 14)) { 3199 do_flush_negative(ssl, worker); 3200 } else if(cmdcmp(p, "rpz_enable", 10)) { 3201 do_rpz_enable(ssl, worker, skipwhite(p+10)); 3202 } else if(cmdcmp(p, "rpz_disable", 11)) { 3203 do_rpz_disable(ssl, worker, skipwhite(p+11)); 3204 } else { 3205 (void)ssl_printf(ssl, "error unknown command '%s'\n", p); 3206 } 3207 } 3208 3209 void 3210 daemon_remote_exec(struct worker* worker) 3211 { 3212 /* read the cmd string */ 3213 uint8_t* msg = NULL; 3214 uint32_t len = 0; 3215 if(!tube_read_msg(worker->cmd, &msg, &len, 0)) { 3216 log_err("daemon_remote_exec: tube_read_msg failed"); 3217 return; 3218 } 3219 verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg); 3220 execute_cmd(NULL, NULL, (char*)msg, worker); 3221 free(msg); 3222 } 3223 3224 /** handle remote control request */ 3225 static void 3226 handle_req(struct daemon_remote* rc, struct rc_state* s, RES* res) 3227 { 3228 int r; 3229 char pre[10]; 3230 char magic[7]; 3231 char buf[1024]; 3232 #ifdef USE_WINSOCK 3233 /* makes it possible to set the socket blocking again. */ 3234 /* basically removes it from winsock_event ... */ 3235 WSAEventSelect(s->c->fd, NULL, 0); 3236 #endif 3237 fd_set_block(s->c->fd); 3238 3239 /* try to read magic UBCT[version]_space_ string */ 3240 if(res->ssl) { 3241 ERR_clear_error(); 3242 if((r=SSL_read(res->ssl, magic, (int)sizeof(magic)-1)) <= 0) { 3243 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) 3244 return; 3245 log_crypto_err("could not SSL_read"); 3246 return; 3247 } 3248 } else { 3249 while(1) { 3250 ssize_t rr = recv(res->fd, magic, sizeof(magic)-1, 0); 3251 if(rr <= 0) { 3252 if(rr == 0) return; 3253 if(errno == EINTR || errno == EAGAIN) 3254 continue; 3255 log_err("could not recv: %s", sock_strerror(errno)); 3256 return; 3257 } 3258 r = (int)rr; 3259 break; 3260 } 3261 } 3262 magic[6] = 0; 3263 if( r != 6 || strncmp(magic, "UBCT", 4) != 0) { 3264 verbose(VERB_QUERY, "control connection has bad magic string"); 3265 /* probably wrong tool connected, ignore it completely */ 3266 return; 3267 } 3268 3269 /* read the command line */ 3270 if(!ssl_read_line(res, buf, sizeof(buf))) { 3271 return; 3272 } 3273 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION); 3274 if(strcmp(magic, pre) != 0) { 3275 verbose(VERB_QUERY, "control connection had bad " 3276 "version %s, cmd: %s", magic, buf); 3277 ssl_printf(res, "error version mismatch\n"); 3278 return; 3279 } 3280 verbose(VERB_DETAIL, "control cmd: %s", buf); 3281 3282 /* figure out what to do */ 3283 execute_cmd(rc, res, buf, rc->worker); 3284 } 3285 3286 /** handle SSL_do_handshake changes to the file descriptor to wait for later */ 3287 static int 3288 remote_handshake_later(struct daemon_remote* rc, struct rc_state* s, 3289 struct comm_point* c, int r, int r2) 3290 { 3291 if(r2 == SSL_ERROR_WANT_READ) { 3292 if(s->shake_state == rc_hs_read) { 3293 /* try again later */ 3294 return 0; 3295 } 3296 s->shake_state = rc_hs_read; 3297 comm_point_listen_for_rw(c, 1, 0); 3298 return 0; 3299 } else if(r2 == SSL_ERROR_WANT_WRITE) { 3300 if(s->shake_state == rc_hs_write) { 3301 /* try again later */ 3302 return 0; 3303 } 3304 s->shake_state = rc_hs_write; 3305 comm_point_listen_for_rw(c, 0, 1); 3306 return 0; 3307 } else { 3308 if(r == 0) 3309 log_err("remote control connection closed prematurely"); 3310 log_addr(VERB_OPS, "failed connection from", 3311 &s->c->repinfo.remote_addr, s->c->repinfo.remote_addrlen); 3312 log_crypto_err("remote control failed ssl"); 3313 clean_point(rc, s); 3314 } 3315 return 0; 3316 } 3317 3318 int remote_control_callback(struct comm_point* c, void* arg, int err, 3319 struct comm_reply* ATTR_UNUSED(rep)) 3320 { 3321 RES res; 3322 struct rc_state* s = (struct rc_state*)arg; 3323 struct daemon_remote* rc = s->rc; 3324 int r; 3325 if(err != NETEVENT_NOERROR) { 3326 if(err==NETEVENT_TIMEOUT) 3327 log_err("remote control timed out"); 3328 clean_point(rc, s); 3329 return 0; 3330 } 3331 if(s->ssl) { 3332 /* (continue to) setup the SSL connection */ 3333 ERR_clear_error(); 3334 r = SSL_do_handshake(s->ssl); 3335 if(r != 1) { 3336 int r2 = SSL_get_error(s->ssl, r); 3337 return remote_handshake_later(rc, s, c, r, r2); 3338 } 3339 s->shake_state = rc_none; 3340 } 3341 3342 /* once handshake has completed, check authentication */ 3343 if (!rc->use_cert) { 3344 verbose(VERB_ALGO, "unauthenticated remote control connection"); 3345 } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) { 3346 #ifdef HAVE_SSL_GET1_PEER_CERTIFICATE 3347 X509* x = SSL_get1_peer_certificate(s->ssl); 3348 #else 3349 X509* x = SSL_get_peer_certificate(s->ssl); 3350 #endif 3351 if(!x) { 3352 verbose(VERB_DETAIL, "remote control connection " 3353 "provided no client certificate"); 3354 clean_point(rc, s); 3355 return 0; 3356 } 3357 verbose(VERB_ALGO, "remote control connection authenticated"); 3358 X509_free(x); 3359 } else { 3360 verbose(VERB_DETAIL, "remote control connection failed to " 3361 "authenticate with client certificate"); 3362 clean_point(rc, s); 3363 return 0; 3364 } 3365 3366 /* if OK start to actually handle the request */ 3367 res.ssl = s->ssl; 3368 res.fd = c->fd; 3369 handle_req(rc, s, &res); 3370 3371 verbose(VERB_ALGO, "remote control operation completed"); 3372 clean_point(rc, s); 3373 return 0; 3374 } 3375