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