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