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