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