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