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