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