remote.c revision 238106
1243791Sdim/* 2243791Sdim * daemon/remote.c - remote control for the unbound daemon. 3243791Sdim * 4243791Sdim * Copyright (c) 2008, NLnet Labs. All rights reserved. 5243791Sdim * 6243791Sdim * This software is open source. 7243791Sdim * 8243791Sdim * Redistribution and use in source and binary forms, with or without 9243791Sdim * modification, are permitted provided that the following conditions 10243791Sdim * are met: 11243791Sdim * 12243791Sdim * Redistributions of source code must retain the above copyright notice, 13243791Sdim * this list of conditions and the following disclaimer. 14243791Sdim * 15243791Sdim * Redistributions in binary form must reproduce the above copyright notice, 16243791Sdim * this list of conditions and the following disclaimer in the documentation 17243791Sdim * and/or other materials provided with the distribution. 18243791Sdim * 19249423Sdim * Neither the name of the NLNET LABS nor the names of its contributors may 20243791Sdim * be used to endorse or promote products derived from this software without 21243791Sdim * specific prior written permission. 22243791Sdim * 23243791Sdim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24243791Sdim * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25243791Sdim * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26243791Sdim * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 27243791Sdim * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28249423Sdim * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29243791Sdim * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30243791Sdim * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31243791Sdim * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32243791Sdim * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33243791Sdim * POSSIBILITY OF SUCH DAMAGE. 34243791Sdim */ 35243791Sdim 36243791Sdim/** 37243791Sdim * \file 38243791Sdim * 39243791Sdim * This file contains the remote control functionality for the daemon. 40243791Sdim * The remote control can be performed using either the commandline 41243791Sdim * unbound-control tool, or a SSLv3/TLS capable web browser. 42243791Sdim * The channel is secured using SSLv3 or TLSv1, and certificates. 43243791Sdim * Both the server and the client(control tool) have their own keys. 44243791Sdim */ 45243791Sdim#include "config.h" 46243791Sdim#ifdef HAVE_OPENSSL_ERR_H 47243791Sdim#include <openssl/err.h> 48243791Sdim#endif 49243791Sdim#include <ctype.h> 50243791Sdim#include <ldns/ldns.h> 51243791Sdim#include "daemon/remote.h" 52243791Sdim#include "daemon/worker.h" 53249423Sdim#include "daemon/daemon.h" 54243791Sdim#include "daemon/stats.h" 55243791Sdim#include "daemon/cachedump.h" 56243791Sdim#include "util/log.h" 57243791Sdim#include "util/config_file.h" 58243791Sdim#include "util/net_help.h" 59243791Sdim#include "util/module.h" 60243791Sdim#include "services/listen_dnsport.h" 61243791Sdim#include "services/cache/rrset.h" 62243791Sdim#include "services/cache/infra.h" 63243791Sdim#include "services/mesh.h" 64243791Sdim#include "services/localzone.h" 65243791Sdim#include "util/storage/slabhash.h" 66243791Sdim#include "util/fptr_wlist.h" 67243791Sdim#include "util/data/dname.h" 68243791Sdim#include "validator/validator.h" 69243791Sdim#include "validator/val_kcache.h" 70243791Sdim#include "validator/val_kentry.h" 71243791Sdim#include "validator/val_anchor.h" 72243791Sdim#include "iterator/iterator.h" 73243791Sdim#include "iterator/iter_fwd.h" 74243791Sdim#include "iterator/iter_hints.h" 75243791Sdim#include "iterator/iter_delegpt.h" 76243791Sdim#include "services/outbound_list.h" 77243791Sdim#include "services/outside_network.h" 78243791Sdim 79243791Sdim#ifdef HAVE_SYS_TYPES_H 80243791Sdim# include <sys/types.h> 81243791Sdim#endif 82249423Sdim#ifdef HAVE_NETDB_H 83249423Sdim#include <netdb.h> 84249423Sdim#endif 85249423Sdim 86249423Sdim/* just for portability */ 87243791Sdim#ifdef SQ 88243791Sdim#undef SQ 89243791Sdim#endif 90243791Sdim 91243791Sdim/** what to put on statistics lines between var and value, ": " or "=" */ 92243791Sdim#define SQ "=" 93243791Sdim/** if true, inhibits a lot of =0 lines from the stats output */ 94243791Sdimstatic const int inhibit_zero = 1; 95243791Sdim 96243791Sdim/** subtract timers and the values do not overflow or become negative */ 97243791Sdimstatic void 98243791Sdimtimeval_subtract(struct timeval* d, const struct timeval* end, 99243791Sdim const struct timeval* start) 100243791Sdim{ 101243791Sdim#ifndef S_SPLINT_S 102243791Sdim time_t end_usec = end->tv_usec; 103243791Sdim d->tv_sec = end->tv_sec - start->tv_sec; 104243791Sdim if(end_usec < start->tv_usec) { 105243791Sdim end_usec += 1000000; 106243791Sdim d->tv_sec--; 107243791Sdim } 108243791Sdim d->tv_usec = end_usec - start->tv_usec; 109243791Sdim#endif 110243791Sdim} 111243791Sdim 112243791Sdim/** divide sum of timers to get average */ 113243791Sdimstatic void 114243791Sdimtimeval_divide(struct timeval* avg, const struct timeval* sum, size_t d) 115243791Sdim{ 116243791Sdim#ifndef S_SPLINT_S 117243791Sdim size_t leftover; 118243791Sdim if(d == 0) { 119243791Sdim avg->tv_sec = 0; 120243791Sdim avg->tv_usec = 0; 121243791Sdim return; 122243791Sdim } 123243791Sdim avg->tv_sec = sum->tv_sec / d; 124243791Sdim avg->tv_usec = sum->tv_usec / d; 125243791Sdim /* handle fraction from seconds divide */ 126243791Sdim leftover = sum->tv_sec - avg->tv_sec*d; 127243791Sdim avg->tv_usec += (leftover*1000000)/d; 128243791Sdim#endif 129243791Sdim} 130243791Sdim 131243791Sdimstruct daemon_remote* 132243791Sdimdaemon_remote_create(struct config_file* cfg) 133243791Sdim{ 134243791Sdim char* s_cert; 135243791Sdim char* s_key; 136243791Sdim struct daemon_remote* rc = (struct daemon_remote*)calloc(1, 137243791Sdim sizeof(*rc)); 138243791Sdim if(!rc) { 139243791Sdim log_err("out of memory in daemon_remote_create"); 140243791Sdim return NULL; 141243791Sdim } 142243791Sdim rc->max_active = 10; 143243791Sdim 144243791Sdim if(!cfg->remote_control_enable) { 145243791Sdim rc->ctx = NULL; 146243791Sdim return rc; 147243791Sdim } 148243791Sdim rc->ctx = SSL_CTX_new(SSLv23_server_method()); 149243791Sdim if(!rc->ctx) { 150243791Sdim log_crypto_err("could not SSL_CTX_new"); 151243791Sdim free(rc); 152243791Sdim return NULL; 153243791Sdim } 154243791Sdim /* no SSLv2 because has defects */ 155243791Sdim if(!(SSL_CTX_set_options(rc->ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)){ 156243791Sdim log_crypto_err("could not set SSL_OP_NO_SSLv2"); 157243791Sdim daemon_remote_delete(rc); 158243791Sdim return NULL; 159243791Sdim } 160243791Sdim s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1); 161243791Sdim s_key = fname_after_chroot(cfg->server_key_file, cfg, 1); 162243791Sdim if(!s_cert || !s_key) { 163243791Sdim log_err("out of memory in remote control fname"); 164243791Sdim goto setup_error; 165243791Sdim } 166243791Sdim verbose(VERB_ALGO, "setup SSL certificates"); 167243791Sdim if (!SSL_CTX_use_certificate_file(rc->ctx,s_cert,SSL_FILETYPE_PEM)) { 168243791Sdim log_err("Error for server-cert-file: %s", s_cert); 169243791Sdim log_crypto_err("Error in SSL_CTX use_certificate_file"); 170243791Sdim goto setup_error; 171243791Sdim } 172243791Sdim if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) { 173243791Sdim log_err("Error for server-key-file: %s", s_key); 174243791Sdim log_crypto_err("Error in SSL_CTX use_PrivateKey_file"); 175243791Sdim goto setup_error; 176243791Sdim } 177243791Sdim if(!SSL_CTX_check_private_key(rc->ctx)) { 178243791Sdim log_err("Error for server-key-file: %s", s_key); 179243791Sdim log_crypto_err("Error in SSL_CTX check_private_key"); 180243791Sdim goto setup_error; 181243791Sdim } 182243791Sdim if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) { 183243791Sdim log_crypto_err("Error setting up SSL_CTX verify locations"); 184243791Sdim setup_error: 185243791Sdim free(s_cert); 186243791Sdim free(s_key); 187243791Sdim daemon_remote_delete(rc); 188243791Sdim return NULL; 189243791Sdim } 190243791Sdim SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert)); 191243791Sdim SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL); 192243791Sdim free(s_cert); 193243791Sdim free(s_key); 194243791Sdim 195243791Sdim return rc; 196243791Sdim} 197243791Sdim 198243791Sdimvoid daemon_remote_clear(struct daemon_remote* rc) 199243791Sdim{ 200243791Sdim struct rc_state* p, *np; 201243791Sdim if(!rc) return; 202243791Sdim /* but do not close the ports */ 203243791Sdim listen_list_delete(rc->accept_list); 204243791Sdim rc->accept_list = NULL; 205243791Sdim /* do close these sockets */ 206243791Sdim p = rc->busy_list; 207243791Sdim while(p) { 208243791Sdim np = p->next; 209243791Sdim if(p->ssl) 210243791Sdim SSL_free(p->ssl); 211243791Sdim comm_point_delete(p->c); 212243791Sdim free(p); 213243791Sdim p = np; 214243791Sdim } 215243791Sdim rc->busy_list = NULL; 216243791Sdim rc->active = 0; 217243791Sdim rc->worker = NULL; 218243791Sdim} 219243791Sdim 220243791Sdimvoid daemon_remote_delete(struct daemon_remote* rc) 221243791Sdim{ 222243791Sdim if(!rc) return; 223243791Sdim daemon_remote_clear(rc); 224243791Sdim if(rc->ctx) { 225243791Sdim SSL_CTX_free(rc->ctx); 226243791Sdim } 227243791Sdim free(rc); 228243791Sdim} 229243791Sdim 230249423Sdim/** 231243791Sdim * Add and open a new control port 232243791Sdim * @param ip: ip str 233243791Sdim * @param nr: port nr 234243791Sdim * @param list: list head 235243791Sdim * @param noproto_is_err: if lack of protocol support is an error. 236243791Sdim * @return false on failure. 237243791Sdim */ 238243791Sdimstatic int 239243791Sdimadd_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err) 240243791Sdim{ 241243791Sdim struct addrinfo hints; 242243791Sdim struct addrinfo* res; 243243791Sdim struct listen_port* n; 244243791Sdim int noproto; 245243791Sdim int fd, r; 246243791Sdim char port[15]; 247243791Sdim snprintf(port, sizeof(port), "%d", nr); 248243791Sdim port[sizeof(port)-1]=0; 249243791Sdim memset(&hints, 0, sizeof(hints)); 250243791Sdim hints.ai_socktype = SOCK_STREAM; 251243791Sdim hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST; 252243791Sdim if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) { 253243791Sdim#ifdef USE_WINSOCK 254249423Sdim if(!noproto_is_err && r == EAI_NONAME) { 255243791Sdim /* tried to lookup the address as name */ 256243791Sdim return 1; /* return success, but do nothing */ 257249423Sdim } 258249423Sdim#endif /* USE_WINSOCK */ 259249423Sdim log_err("control interface %s:%s getaddrinfo: %s %s", 260249423Sdim ip?ip:"default", port, gai_strerror(r), 261249423Sdim#ifdef EAI_SYSTEM 262249423Sdim r==EAI_SYSTEM?(char*)strerror(errno):"" 263249423Sdim#else 264249423Sdim "" 265243791Sdim#endif 266243791Sdim ); 267243791Sdim return 0; 268249423Sdim } 269249423Sdim 270249423Sdim /* open fd */ 271249423Sdim fd = create_tcp_accept_sock(res, 1, &noproto); 272249423Sdim freeaddrinfo(res); 273243791Sdim if(fd == -1 && noproto) { 274243791Sdim if(!noproto_is_err) 275249423Sdim return 1; /* return success, but do nothing */ 276243791Sdim log_err("cannot open control interface %s %d : " 277243791Sdim "protocol not supported", ip, nr); 278243791Sdim return 0; 279243791Sdim } 280243791Sdim if(fd == -1) { 281243791Sdim log_err("cannot open control interface %s %d", ip, nr); 282243791Sdim return 0; 283243791Sdim } 284243791Sdim 285243791Sdim /* alloc */ 286243791Sdim n = (struct listen_port*)calloc(1, sizeof(*n)); 287243791Sdim if(!n) { 288243791Sdim#ifndef USE_WINSOCK 289243791Sdim close(fd); 290#else 291 closesocket(fd); 292#endif 293 log_err("out of memory"); 294 return 0; 295 } 296 n->next = *list; 297 *list = n; 298 n->fd = fd; 299 return 1; 300} 301 302struct listen_port* daemon_remote_open_ports(struct config_file* cfg) 303{ 304 struct listen_port* l = NULL; 305 log_assert(cfg->remote_control_enable && cfg->control_port); 306 if(cfg->control_ifs) { 307 struct config_strlist* p; 308 for(p = cfg->control_ifs; p; p = p->next) { 309 if(!add_open(p->str, cfg->control_port, &l, 1)) { 310 listening_ports_free(l); 311 return NULL; 312 } 313 } 314 } else { 315 /* defaults */ 316 if(cfg->do_ip6 && 317 !add_open("::1", cfg->control_port, &l, 0)) { 318 listening_ports_free(l); 319 return NULL; 320 } 321 if(cfg->do_ip4 && 322 !add_open("127.0.0.1", cfg->control_port, &l, 1)) { 323 listening_ports_free(l); 324 return NULL; 325 } 326 } 327 return l; 328} 329 330/** open accept commpoint */ 331static int 332accept_open(struct daemon_remote* rc, int fd) 333{ 334 struct listen_list* n = (struct listen_list*)malloc(sizeof(*n)); 335 if(!n) { 336 log_err("out of memory"); 337 return 0; 338 } 339 n->next = rc->accept_list; 340 rc->accept_list = n; 341 /* open commpt */ 342 n->com = comm_point_create_raw(rc->worker->base, fd, 0, 343 &remote_accept_callback, rc); 344 if(!n->com) 345 return 0; 346 /* keep this port open, its fd is kept in the rc portlist */ 347 n->com->do_not_close = 1; 348 return 1; 349} 350 351int daemon_remote_open_accept(struct daemon_remote* rc, 352 struct listen_port* ports, struct worker* worker) 353{ 354 struct listen_port* p; 355 rc->worker = worker; 356 for(p = ports; p; p = p->next) { 357 if(!accept_open(rc, p->fd)) { 358 log_err("could not create accept comm point"); 359 return 0; 360 } 361 } 362 return 1; 363} 364 365void daemon_remote_stop_accept(struct daemon_remote* rc) 366{ 367 struct listen_list* p; 368 for(p=rc->accept_list; p; p=p->next) { 369 comm_point_stop_listening(p->com); 370 } 371} 372 373void daemon_remote_start_accept(struct daemon_remote* rc) 374{ 375 struct listen_list* p; 376 for(p=rc->accept_list; p; p=p->next) { 377 comm_point_start_listening(p->com, -1, -1); 378 } 379} 380 381int remote_accept_callback(struct comm_point* c, void* arg, int err, 382 struct comm_reply* ATTR_UNUSED(rep)) 383{ 384 struct daemon_remote* rc = (struct daemon_remote*)arg; 385 struct sockaddr_storage addr; 386 socklen_t addrlen; 387 int newfd; 388 struct rc_state* n; 389 if(err != NETEVENT_NOERROR) { 390 log_err("error %d on remote_accept_callback", err); 391 return 0; 392 } 393 /* perform the accept */ 394 newfd = comm_point_perform_accept(c, &addr, &addrlen); 395 if(newfd == -1) 396 return 0; 397 /* create new commpoint unless we are servicing already */ 398 if(rc->active >= rc->max_active) { 399 log_warn("drop incoming remote control: too many connections"); 400 close_exit: 401#ifndef USE_WINSOCK 402 close(newfd); 403#else 404 closesocket(newfd); 405#endif 406 return 0; 407 } 408 409 /* setup commpoint to service the remote control command */ 410 n = (struct rc_state*)calloc(1, sizeof(*n)); 411 if(!n) { 412 log_err("out of memory"); 413 goto close_exit; 414 } 415 /* start in reading state */ 416 n->c = comm_point_create_raw(rc->worker->base, newfd, 0, 417 &remote_control_callback, n); 418 if(!n->c) { 419 log_err("out of memory"); 420 free(n); 421 goto close_exit; 422 } 423 log_addr(VERB_QUERY, "new control connection from", &addr, addrlen); 424 n->c->do_not_close = 0; 425 comm_point_stop_listening(n->c); 426 comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT); 427 memcpy(&n->c->repinfo.addr, &addr, addrlen); 428 n->c->repinfo.addrlen = addrlen; 429 n->shake_state = rc_hs_read; 430 n->ssl = SSL_new(rc->ctx); 431 if(!n->ssl) { 432 log_crypto_err("could not SSL_new"); 433 comm_point_delete(n->c); 434 free(n); 435 goto close_exit; 436 } 437 SSL_set_accept_state(n->ssl); 438 (void)SSL_set_mode(n->ssl, SSL_MODE_AUTO_RETRY); 439 if(!SSL_set_fd(n->ssl, newfd)) { 440 log_crypto_err("could not SSL_set_fd"); 441 SSL_free(n->ssl); 442 comm_point_delete(n->c); 443 free(n); 444 goto close_exit; 445 } 446 447 n->rc = rc; 448 n->next = rc->busy_list; 449 rc->busy_list = n; 450 rc->active ++; 451 452 /* perform the first nonblocking read already, for windows, 453 * so it can return wouldblock. could be faster too. */ 454 (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL); 455 return 0; 456} 457 458/** delete from list */ 459static void 460state_list_remove_elem(struct rc_state** list, struct comm_point* c) 461{ 462 while(*list) { 463 if( (*list)->c == c) { 464 *list = (*list)->next; 465 return; 466 } 467 list = &(*list)->next; 468 } 469} 470 471/** decrease active count and remove commpoint from busy list */ 472static void 473clean_point(struct daemon_remote* rc, struct rc_state* s) 474{ 475 state_list_remove_elem(&rc->busy_list, s->c); 476 rc->active --; 477 if(s->ssl) { 478 SSL_shutdown(s->ssl); 479 SSL_free(s->ssl); 480 } 481 comm_point_delete(s->c); 482 free(s); 483} 484 485int 486ssl_print_text(SSL* ssl, const char* text) 487{ 488 int r; 489 if(!ssl) 490 return 0; 491 ERR_clear_error(); 492 if((r=SSL_write(ssl, text, (int)strlen(text))) <= 0) { 493 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) { 494 verbose(VERB_QUERY, "warning, in SSL_write, peer " 495 "closed connection"); 496 return 0; 497 } 498 log_crypto_err("could not SSL_write"); 499 return 0; 500 } 501 return 1; 502} 503 504/** print text over the ssl connection */ 505static int 506ssl_print_vmsg(SSL* ssl, const char* format, va_list args) 507{ 508 char msg[1024]; 509 vsnprintf(msg, sizeof(msg), format, args); 510 return ssl_print_text(ssl, msg); 511} 512 513/** printf style printing to the ssl connection */ 514int ssl_printf(SSL* ssl, const char* format, ...) 515{ 516 va_list args; 517 int ret; 518 va_start(args, format); 519 ret = ssl_print_vmsg(ssl, format, args); 520 va_end(args); 521 return ret; 522} 523 524int 525ssl_read_line(SSL* ssl, char* buf, size_t max) 526{ 527 int r; 528 size_t len = 0; 529 if(!ssl) 530 return 0; 531 while(len < max) { 532 ERR_clear_error(); 533 if((r=SSL_read(ssl, buf+len, 1)) <= 0) { 534 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) { 535 buf[len] = 0; 536 return 1; 537 } 538 log_crypto_err("could not SSL_read"); 539 return 0; 540 } 541 if(buf[len] == '\n') { 542 /* return string without \n */ 543 buf[len] = 0; 544 return 1; 545 } 546 len++; 547 } 548 buf[max-1] = 0; 549 log_err("control line too long (%d): %s", (int)max, buf); 550 return 0; 551} 552 553/** skip whitespace, return new pointer into string */ 554static char* 555skipwhite(char* str) 556{ 557 /* EOS \0 is not a space */ 558 while( isspace(*str) ) 559 str++; 560 return str; 561} 562 563/** send the OK to the control client */ 564static void send_ok(SSL* ssl) 565{ 566 (void)ssl_printf(ssl, "ok\n"); 567} 568 569/** do the stop command */ 570static void 571do_stop(SSL* ssl, struct daemon_remote* rc) 572{ 573 rc->worker->need_to_exit = 1; 574 comm_base_exit(rc->worker->base); 575 send_ok(ssl); 576} 577 578/** do the reload command */ 579static void 580do_reload(SSL* ssl, struct daemon_remote* rc) 581{ 582 rc->worker->need_to_exit = 0; 583 comm_base_exit(rc->worker->base); 584 send_ok(ssl); 585} 586 587/** do the verbosity command */ 588static void 589do_verbosity(SSL* ssl, char* str) 590{ 591 int val = atoi(str); 592 if(val == 0 && strcmp(str, "0") != 0) { 593 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str); 594 return; 595 } 596 verbosity = val; 597 send_ok(ssl); 598} 599 600/** print stats from statinfo */ 601static int 602print_stats(SSL* ssl, const char* nm, struct stats_info* s) 603{ 604 struct timeval avg; 605 if(!ssl_printf(ssl, "%s.num.queries"SQ"%u\n", nm, 606 (unsigned)s->svr.num_queries)) return 0; 607 if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%u\n", nm, 608 (unsigned)(s->svr.num_queries 609 - s->svr.num_queries_missed_cache))) return 0; 610 if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%u\n", nm, 611 (unsigned)s->svr.num_queries_missed_cache)) return 0; 612 if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%u\n", nm, 613 (unsigned)s->svr.num_queries_prefetch)) return 0; 614 if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%u\n", nm, 615 (unsigned)s->mesh_replies_sent)) return 0; 616 if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm, 617 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)? 618 (double)s->svr.sum_query_list_size/ 619 (s->svr.num_queries_missed_cache+ 620 s->svr.num_queries_prefetch) : 0.0)) return 0; 621 if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%u\n", nm, 622 (unsigned)s->svr.max_query_list_size)) return 0; 623 if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%u\n", nm, 624 (unsigned)s->mesh_jostled)) return 0; 625 if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%u\n", nm, 626 (unsigned)s->mesh_dropped)) return 0; 627 if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%u\n", nm, 628 (unsigned)s->mesh_num_states)) return 0; 629 if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%u\n", nm, 630 (unsigned)s->mesh_num_reply_states)) return 0; 631 timeval_divide(&avg, &s->mesh_replies_sum_wait, s->mesh_replies_sent); 632 if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ"%d.%6.6d\n", nm, 633 (int)avg.tv_sec, (int)avg.tv_usec)) return 0; 634 if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm, 635 s->mesh_time_median)) return 0; 636 return 1; 637} 638 639/** print stats for one thread */ 640static int 641print_thread_stats(SSL* ssl, int i, struct stats_info* s) 642{ 643 char nm[16]; 644 snprintf(nm, sizeof(nm), "thread%d", i); 645 nm[sizeof(nm)-1]=0; 646 return print_stats(ssl, nm, s); 647} 648 649/** print long number */ 650static int 651print_longnum(SSL* ssl, char* desc, size_t x) 652{ 653 if(x > 1024*1024*1024) { 654 /* more than a Gb */ 655 size_t front = x / (size_t)1000000; 656 size_t back = x % (size_t)1000000; 657 return ssl_printf(ssl, "%s%u%6.6u\n", desc, 658 (unsigned)front, (unsigned)back); 659 } else { 660 return ssl_printf(ssl, "%s%u\n", desc, (unsigned)x); 661 } 662} 663 664/** print mem stats */ 665static int 666print_mem(SSL* ssl, struct worker* worker, struct daemon* daemon) 667{ 668 int m; 669 size_t msg, rrset, val, iter; 670#ifdef HAVE_SBRK 671 extern void* unbound_start_brk; 672 void* cur = sbrk(0); 673 if(!print_longnum(ssl, "mem.total.sbrk"SQ, 674 (size_t)((char*)cur - (char*)unbound_start_brk))) return 0; 675#endif /* HAVE_SBRK */ 676 msg = slabhash_get_mem(daemon->env->msg_cache); 677 rrset = slabhash_get_mem(&daemon->env->rrset_cache->table); 678 val=0; 679 iter=0; 680 m = modstack_find(&worker->env.mesh->mods, "validator"); 681 if(m != -1) { 682 fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh-> 683 mods.mod[m]->get_mem)); 684 val = (*worker->env.mesh->mods.mod[m]->get_mem) 685 (&worker->env, m); 686 } 687 m = modstack_find(&worker->env.mesh->mods, "iterator"); 688 if(m != -1) { 689 fptr_ok(fptr_whitelist_mod_get_mem(worker->env.mesh-> 690 mods.mod[m]->get_mem)); 691 iter = (*worker->env.mesh->mods.mod[m]->get_mem) 692 (&worker->env, m); 693 } 694 695 if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset)) 696 return 0; 697 if(!print_longnum(ssl, "mem.cache.message"SQ, msg)) 698 return 0; 699 if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter)) 700 return 0; 701 if(!print_longnum(ssl, "mem.mod.validator"SQ, val)) 702 return 0; 703 return 1; 704} 705 706/** print uptime stats */ 707static int 708print_uptime(SSL* ssl, struct worker* worker, int reset) 709{ 710 struct timeval now = *worker->env.now_tv; 711 struct timeval up, dt; 712 timeval_subtract(&up, &now, &worker->daemon->time_boot); 713 timeval_subtract(&dt, &now, &worker->daemon->time_last_stat); 714 if(reset) 715 worker->daemon->time_last_stat = now; 716 if(!ssl_printf(ssl, "time.now"SQ"%d.%6.6d\n", 717 (unsigned)now.tv_sec, (unsigned)now.tv_usec)) return 0; 718 if(!ssl_printf(ssl, "time.up"SQ"%d.%6.6d\n", 719 (unsigned)up.tv_sec, (unsigned)up.tv_usec)) return 0; 720 if(!ssl_printf(ssl, "time.elapsed"SQ"%d.%6.6d\n", 721 (unsigned)dt.tv_sec, (unsigned)dt.tv_usec)) return 0; 722 return 1; 723} 724 725/** print extended histogram */ 726static int 727print_hist(SSL* ssl, struct stats_info* s) 728{ 729 struct timehist* hist; 730 size_t i; 731 hist = timehist_setup(); 732 if(!hist) { 733 log_err("out of memory"); 734 return 0; 735 } 736 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST); 737 for(i=0; i<hist->num; i++) { 738 if(!ssl_printf(ssl, 739 "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%u\n", 740 (int)hist->buckets[i].lower.tv_sec, 741 (int)hist->buckets[i].lower.tv_usec, 742 (int)hist->buckets[i].upper.tv_sec, 743 (int)hist->buckets[i].upper.tv_usec, 744 (unsigned)hist->buckets[i].count)) { 745 timehist_delete(hist); 746 return 0; 747 } 748 } 749 timehist_delete(hist); 750 return 1; 751} 752 753/** print extended stats */ 754static int 755print_ext(SSL* ssl, struct stats_info* s) 756{ 757 int i; 758 char nm[16]; 759 const ldns_rr_descriptor* desc; 760 const ldns_lookup_table* lt; 761 /* TYPE */ 762 for(i=0; i<STATS_QTYPE_NUM; i++) { 763 if(inhibit_zero && s->svr.qtype[i] == 0) 764 continue; 765 desc = ldns_rr_descript((uint16_t)i); 766 if(desc && desc->_name) { 767 snprintf(nm, sizeof(nm), "%s", desc->_name); 768 } else if (i == LDNS_RR_TYPE_IXFR) { 769 snprintf(nm, sizeof(nm), "IXFR"); 770 } else if (i == LDNS_RR_TYPE_AXFR) { 771 snprintf(nm, sizeof(nm), "AXFR"); 772 } else if (i == LDNS_RR_TYPE_MAILA) { 773 snprintf(nm, sizeof(nm), "MAILA"); 774 } else if (i == LDNS_RR_TYPE_MAILB) { 775 snprintf(nm, sizeof(nm), "MAILB"); 776 } else if (i == LDNS_RR_TYPE_ANY) { 777 snprintf(nm, sizeof(nm), "ANY"); 778 } else { 779 snprintf(nm, sizeof(nm), "TYPE%d", i); 780 } 781 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%u\n", 782 nm, (unsigned)s->svr.qtype[i])) return 0; 783 } 784 if(!inhibit_zero || s->svr.qtype_big) { 785 if(!ssl_printf(ssl, "num.query.type.other"SQ"%u\n", 786 (unsigned)s->svr.qtype_big)) return 0; 787 } 788 /* CLASS */ 789 for(i=0; i<STATS_QCLASS_NUM; i++) { 790 if(inhibit_zero && s->svr.qclass[i] == 0) 791 continue; 792 lt = ldns_lookup_by_id(ldns_rr_classes, i); 793 if(lt && lt->name) { 794 snprintf(nm, sizeof(nm), "%s", lt->name); 795 } else { 796 snprintf(nm, sizeof(nm), "CLASS%d", i); 797 } 798 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%u\n", 799 nm, (unsigned)s->svr.qclass[i])) return 0; 800 } 801 if(!inhibit_zero || s->svr.qclass_big) { 802 if(!ssl_printf(ssl, "num.query.class.other"SQ"%u\n", 803 (unsigned)s->svr.qclass_big)) return 0; 804 } 805 /* OPCODE */ 806 for(i=0; i<STATS_OPCODE_NUM; i++) { 807 if(inhibit_zero && s->svr.qopcode[i] == 0) 808 continue; 809 lt = ldns_lookup_by_id(ldns_opcodes, i); 810 if(lt && lt->name) { 811 snprintf(nm, sizeof(nm), "%s", lt->name); 812 } else { 813 snprintf(nm, sizeof(nm), "OPCODE%d", i); 814 } 815 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%u\n", 816 nm, (unsigned)s->svr.qopcode[i])) return 0; 817 } 818 /* transport */ 819 if(!ssl_printf(ssl, "num.query.tcp"SQ"%u\n", 820 (unsigned)s->svr.qtcp)) return 0; 821 if(!ssl_printf(ssl, "num.query.ipv6"SQ"%u\n", 822 (unsigned)s->svr.qipv6)) return 0; 823 /* flags */ 824 if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%u\n", 825 (unsigned)s->svr.qbit_QR)) return 0; 826 if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%u\n", 827 (unsigned)s->svr.qbit_AA)) return 0; 828 if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%u\n", 829 (unsigned)s->svr.qbit_TC)) return 0; 830 if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%u\n", 831 (unsigned)s->svr.qbit_RD)) return 0; 832 if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%u\n", 833 (unsigned)s->svr.qbit_RA)) return 0; 834 if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%u\n", 835 (unsigned)s->svr.qbit_Z)) return 0; 836 if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%u\n", 837 (unsigned)s->svr.qbit_AD)) return 0; 838 if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%u\n", 839 (unsigned)s->svr.qbit_CD)) return 0; 840 if(!ssl_printf(ssl, "num.query.edns.present"SQ"%u\n", 841 (unsigned)s->svr.qEDNS)) return 0; 842 if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%u\n", 843 (unsigned)s->svr.qEDNS_DO)) return 0; 844 845 /* RCODE */ 846 for(i=0; i<STATS_RCODE_NUM; i++) { 847 if(inhibit_zero && s->svr.ans_rcode[i] == 0) 848 continue; 849 lt = ldns_lookup_by_id(ldns_rcodes, i); 850 if(lt && lt->name) { 851 snprintf(nm, sizeof(nm), "%s", lt->name); 852 } else { 853 snprintf(nm, sizeof(nm), "RCODE%d", i); 854 } 855 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%u\n", 856 nm, (unsigned)s->svr.ans_rcode[i])) return 0; 857 } 858 if(!inhibit_zero || s->svr.ans_rcode_nodata) { 859 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%u\n", 860 (unsigned)s->svr.ans_rcode_nodata)) return 0; 861 } 862 /* validation */ 863 if(!ssl_printf(ssl, "num.answer.secure"SQ"%u\n", 864 (unsigned)s->svr.ans_secure)) return 0; 865 if(!ssl_printf(ssl, "num.answer.bogus"SQ"%u\n", 866 (unsigned)s->svr.ans_bogus)) return 0; 867 if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%u\n", 868 (unsigned)s->svr.rrset_bogus)) return 0; 869 /* threat detection */ 870 if(!ssl_printf(ssl, "unwanted.queries"SQ"%u\n", 871 (unsigned)s->svr.unwanted_queries)) return 0; 872 if(!ssl_printf(ssl, "unwanted.replies"SQ"%u\n", 873 (unsigned)s->svr.unwanted_replies)) return 0; 874 return 1; 875} 876 877/** do the stats command */ 878static void 879do_stats(SSL* ssl, struct daemon_remote* rc, int reset) 880{ 881 struct daemon* daemon = rc->worker->daemon; 882 struct stats_info total; 883 struct stats_info s; 884 int i; 885 log_assert(daemon->num > 0); 886 /* gather all thread statistics in one place */ 887 for(i=0; i<daemon->num; i++) { 888 server_stats_obtain(rc->worker, daemon->workers[i], &s, reset); 889 if(!print_thread_stats(ssl, i, &s)) 890 return; 891 if(i == 0) 892 total = s; 893 else server_stats_add(&total, &s); 894 } 895 /* print the thread statistics */ 896 total.mesh_time_median /= (double)daemon->num; 897 if(!print_stats(ssl, "total", &total)) 898 return; 899 if(!print_uptime(ssl, rc->worker, reset)) 900 return; 901 if(daemon->cfg->stat_extended) { 902 if(!print_mem(ssl, rc->worker, daemon)) 903 return; 904 if(!print_hist(ssl, &total)) 905 return; 906 if(!print_ext(ssl, &total)) 907 return; 908 } 909} 910 911/** parse commandline argument domain name */ 912static int 913parse_arg_name(SSL* ssl, char* str, uint8_t** res, size_t* len, int* labs) 914{ 915 ldns_rdf* rdf; 916 *res = NULL; 917 *len = 0; 918 *labs = 0; 919 rdf = ldns_dname_new_frm_str(str); 920 if(!rdf) { 921 ssl_printf(ssl, "error cannot parse name %s\n", str); 922 return 0; 923 } 924 *res = memdup(ldns_rdf_data(rdf), ldns_rdf_size(rdf)); 925 ldns_rdf_deep_free(rdf); 926 if(!*res) { 927 ssl_printf(ssl, "error out of memory\n"); 928 return 0; 929 } 930 *labs = dname_count_size_labels(*res, len); 931 return 1; 932} 933 934/** find second argument, modifies string */ 935static int 936find_arg2(SSL* ssl, char* arg, char** arg2) 937{ 938 char* as = strchr(arg, ' '); 939 char* at = strchr(arg, '\t'); 940 if(as && at) { 941 if(at < as) 942 as = at; 943 as[0]=0; 944 *arg2 = skipwhite(as+1); 945 } else if(as) { 946 as[0]=0; 947 *arg2 = skipwhite(as+1); 948 } else if(at) { 949 at[0]=0; 950 *arg2 = skipwhite(at+1); 951 } else { 952 ssl_printf(ssl, "error could not find next argument " 953 "after %s\n", arg); 954 return 0; 955 } 956 return 1; 957} 958 959/** Add a new zone */ 960static void 961do_zone_add(SSL* ssl, struct worker* worker, char* arg) 962{ 963 uint8_t* nm; 964 int nmlabs; 965 size_t nmlen; 966 char* arg2; 967 enum localzone_type t; 968 struct local_zone* z; 969 if(!find_arg2(ssl, arg, &arg2)) 970 return; 971 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 972 return; 973 if(!local_zone_str2type(arg2, &t)) { 974 ssl_printf(ssl, "error not a zone type. %s\n", arg2); 975 free(nm); 976 return; 977 } 978 lock_quick_lock(&worker->daemon->local_zones->lock); 979 if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen, 980 nmlabs, LDNS_RR_CLASS_IN))) { 981 /* already present in tree */ 982 lock_rw_wrlock(&z->lock); 983 z->type = t; /* update type anyway */ 984 lock_rw_unlock(&z->lock); 985 free(nm); 986 lock_quick_unlock(&worker->daemon->local_zones->lock); 987 send_ok(ssl); 988 return; 989 } 990 if(!local_zones_add_zone(worker->daemon->local_zones, nm, nmlen, 991 nmlabs, LDNS_RR_CLASS_IN, t)) { 992 lock_quick_unlock(&worker->daemon->local_zones->lock); 993 ssl_printf(ssl, "error out of memory\n"); 994 return; 995 } 996 lock_quick_unlock(&worker->daemon->local_zones->lock); 997 send_ok(ssl); 998} 999 1000/** Remove a zone */ 1001static void 1002do_zone_remove(SSL* ssl, struct worker* worker, char* arg) 1003{ 1004 uint8_t* nm; 1005 int nmlabs; 1006 size_t nmlen; 1007 struct local_zone* z; 1008 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1009 return; 1010 lock_quick_lock(&worker->daemon->local_zones->lock); 1011 if((z=local_zones_find(worker->daemon->local_zones, nm, nmlen, 1012 nmlabs, LDNS_RR_CLASS_IN))) { 1013 /* present in tree */ 1014 local_zones_del_zone(worker->daemon->local_zones, z); 1015 } 1016 lock_quick_unlock(&worker->daemon->local_zones->lock); 1017 free(nm); 1018 send_ok(ssl); 1019} 1020 1021/** Add new RR data */ 1022static void 1023do_data_add(SSL* ssl, struct worker* worker, char* arg) 1024{ 1025 if(!local_zones_add_RR(worker->daemon->local_zones, arg, 1026 worker->env.scratch_buffer)) { 1027 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg); 1028 return; 1029 } 1030 send_ok(ssl); 1031} 1032 1033/** Remove RR data */ 1034static void 1035do_data_remove(SSL* ssl, struct worker* worker, char* arg) 1036{ 1037 uint8_t* nm; 1038 int nmlabs; 1039 size_t nmlen; 1040 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1041 return; 1042 local_zones_del_data(worker->daemon->local_zones, nm, 1043 nmlen, nmlabs, LDNS_RR_CLASS_IN); 1044 free(nm); 1045 send_ok(ssl); 1046} 1047 1048/** cache lookup of nameservers */ 1049static void 1050do_lookup(SSL* ssl, struct worker* worker, char* arg) 1051{ 1052 uint8_t* nm; 1053 int nmlabs; 1054 size_t nmlen; 1055 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1056 return; 1057 (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs); 1058 free(nm); 1059} 1060 1061/** flush something from rrset and msg caches */ 1062static void 1063do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen, 1064 uint16_t t, uint16_t c) 1065{ 1066 hashvalue_t h; 1067 struct query_info k; 1068 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0); 1069 if(t == LDNS_RR_TYPE_SOA) 1070 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 1071 PACKED_RRSET_SOA_NEG); 1072 k.qname = nm; 1073 k.qname_len = nmlen; 1074 k.qtype = t; 1075 k.qclass = c; 1076 h = query_info_hash(&k); 1077 slabhash_remove(worker->env.msg_cache, h, &k); 1078} 1079 1080/** flush a type */ 1081static void 1082do_flush_type(SSL* ssl, struct worker* worker, char* arg) 1083{ 1084 uint8_t* nm; 1085 int nmlabs; 1086 size_t nmlen; 1087 char* arg2; 1088 uint16_t t; 1089 if(!find_arg2(ssl, arg, &arg2)) 1090 return; 1091 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1092 return; 1093 t = ldns_get_rr_type_by_name(arg2); 1094 do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN); 1095 1096 free(nm); 1097 send_ok(ssl); 1098} 1099 1100/** flush statistics */ 1101static void 1102do_flush_stats(SSL* ssl, struct worker* worker) 1103{ 1104 worker_stats_clear(worker); 1105 send_ok(ssl); 1106} 1107 1108/** 1109 * Local info for deletion functions 1110 */ 1111struct del_info { 1112 /** worker */ 1113 struct worker* worker; 1114 /** name to delete */ 1115 uint8_t* name; 1116 /** length */ 1117 size_t len; 1118 /** labels */ 1119 int labs; 1120 /** now */ 1121 uint32_t now; 1122 /** time to invalidate to */ 1123 uint32_t expired; 1124 /** number of rrsets removed */ 1125 size_t num_rrsets; 1126 /** number of msgs removed */ 1127 size_t num_msgs; 1128 /** number of key entries removed */ 1129 size_t num_keys; 1130 /** length of addr */ 1131 socklen_t addrlen; 1132 /** socket address for host deletion */ 1133 struct sockaddr_storage addr; 1134}; 1135 1136/** callback to delete hosts in infra cache */ 1137static void 1138infra_del_host(struct lruhash_entry* e, void* arg) 1139{ 1140 /* entry is locked */ 1141 struct del_info* inf = (struct del_info*)arg; 1142 struct infra_key* k = (struct infra_key*)e->key; 1143 if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) { 1144 struct infra_data* d = (struct infra_data*)e->data; 1145 d->probedelay = 0; 1146 d->timeout_A = 0; 1147 d->timeout_AAAA = 0; 1148 d->timeout_other = 0; 1149 rtt_init(&d->rtt); 1150 if(d->ttl >= inf->now) { 1151 d->ttl = inf->expired; 1152 inf->num_keys++; 1153 } 1154 } 1155} 1156 1157/** flush infra cache */ 1158static void 1159do_flush_infra(SSL* ssl, struct worker* worker, char* arg) 1160{ 1161 struct sockaddr_storage addr; 1162 socklen_t len; 1163 struct del_info inf; 1164 if(strcmp(arg, "all") == 0) { 1165 slabhash_clear(worker->env.infra_cache->hosts); 1166 send_ok(ssl); 1167 return; 1168 } 1169 if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) { 1170 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg); 1171 return; 1172 } 1173 /* delete all entries from cache */ 1174 /* what we do is to set them all expired */ 1175 inf.worker = worker; 1176 inf.name = 0; 1177 inf.len = 0; 1178 inf.labs = 0; 1179 inf.now = *worker->env.now; 1180 inf.expired = *worker->env.now; 1181 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1182 inf.num_rrsets = 0; 1183 inf.num_msgs = 0; 1184 inf.num_keys = 0; 1185 inf.addrlen = len; 1186 memmove(&inf.addr, &addr, len); 1187 slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host, 1188 &inf); 1189 send_ok(ssl); 1190} 1191 1192/** flush requestlist */ 1193static void 1194do_flush_requestlist(SSL* ssl, struct worker* worker) 1195{ 1196 mesh_delete_all(worker->env.mesh); 1197 send_ok(ssl); 1198} 1199 1200/** callback to delete rrsets in a zone */ 1201static void 1202zone_del_rrset(struct lruhash_entry* e, void* arg) 1203{ 1204 /* entry is locked */ 1205 struct del_info* inf = (struct del_info*)arg; 1206 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key; 1207 if(dname_subdomain_c(k->rk.dname, inf->name)) { 1208 struct packed_rrset_data* d = 1209 (struct packed_rrset_data*)e->data; 1210 if(d->ttl >= inf->now) { 1211 d->ttl = inf->expired; 1212 inf->num_rrsets++; 1213 } 1214 } 1215} 1216 1217/** callback to delete messages in a zone */ 1218static void 1219zone_del_msg(struct lruhash_entry* e, void* arg) 1220{ 1221 /* entry is locked */ 1222 struct del_info* inf = (struct del_info*)arg; 1223 struct msgreply_entry* k = (struct msgreply_entry*)e->key; 1224 if(dname_subdomain_c(k->key.qname, inf->name)) { 1225 struct reply_info* d = (struct reply_info*)e->data; 1226 if(d->ttl >= inf->now) { 1227 d->ttl = inf->expired; 1228 inf->num_msgs++; 1229 } 1230 } 1231} 1232 1233/** callback to delete keys in zone */ 1234static void 1235zone_del_kcache(struct lruhash_entry* e, void* arg) 1236{ 1237 /* entry is locked */ 1238 struct del_info* inf = (struct del_info*)arg; 1239 struct key_entry_key* k = (struct key_entry_key*)e->key; 1240 if(dname_subdomain_c(k->name, inf->name)) { 1241 struct key_entry_data* d = (struct key_entry_data*)e->data; 1242 if(d->ttl >= inf->now) { 1243 d->ttl = inf->expired; 1244 inf->num_keys++; 1245 } 1246 } 1247} 1248 1249/** remove all rrsets and keys from zone from cache */ 1250static void 1251do_flush_zone(SSL* ssl, struct worker* worker, char* arg) 1252{ 1253 uint8_t* nm; 1254 int nmlabs; 1255 size_t nmlen; 1256 struct del_info inf; 1257 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1258 return; 1259 /* delete all RRs and key entries from zone */ 1260 /* what we do is to set them all expired */ 1261 inf.worker = worker; 1262 inf.name = nm; 1263 inf.len = nmlen; 1264 inf.labs = nmlabs; 1265 inf.now = *worker->env.now; 1266 inf.expired = *worker->env.now; 1267 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1268 inf.num_rrsets = 0; 1269 inf.num_msgs = 0; 1270 inf.num_keys = 0; 1271 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1272 &zone_del_rrset, &inf); 1273 1274 slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf); 1275 1276 /* and validator cache */ 1277 if(worker->env.key_cache) { 1278 slabhash_traverse(worker->env.key_cache->slab, 1, 1279 &zone_del_kcache, &inf); 1280 } 1281 1282 free(nm); 1283 1284 (void)ssl_printf(ssl, "ok removed %u rrsets, %u messages " 1285 "and %u key entries\n", (unsigned)inf.num_rrsets, 1286 (unsigned)inf.num_msgs, (unsigned)inf.num_keys); 1287} 1288 1289/** remove name rrset from cache */ 1290static void 1291do_flush_name(SSL* ssl, struct worker* w, char* arg) 1292{ 1293 uint8_t* nm; 1294 int nmlabs; 1295 size_t nmlen; 1296 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1297 return; 1298 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN); 1299 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN); 1300 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN); 1301 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN); 1302 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN); 1303 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN); 1304 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN); 1305 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN); 1306 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN); 1307 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN); 1308 1309 free(nm); 1310 send_ok(ssl); 1311} 1312 1313/** printout a delegation point info */ 1314static int 1315ssl_print_name_dp(SSL* ssl, char* str, uint8_t* nm, uint16_t dclass, 1316 struct delegpt* dp) 1317{ 1318 char buf[257]; 1319 struct delegpt_ns* ns; 1320 struct delegpt_addr* a; 1321 int f = 0; 1322 if(str) { /* print header for forward, stub */ 1323 char* c = ldns_rr_class2str(dclass); 1324 dname_str(nm, buf); 1325 if(!ssl_printf(ssl, "%s %s %s: ", buf, c, str)) { 1326 free(c); 1327 return 0; 1328 } 1329 free(c); 1330 } 1331 for(ns = dp->nslist; ns; ns = ns->next) { 1332 dname_str(ns->name, buf); 1333 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1334 return 0; 1335 f = 1; 1336 } 1337 for(a = dp->target_list; a; a = a->next_target) { 1338 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf)); 1339 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1340 return 0; 1341 f = 1; 1342 } 1343 return ssl_printf(ssl, "\n"); 1344} 1345 1346 1347/** print root forwards */ 1348static int 1349print_root_fwds(SSL* ssl, struct iter_forwards* fwds, uint8_t* root) 1350{ 1351 struct delegpt* dp; 1352 dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN); 1353 if(!dp) 1354 return ssl_printf(ssl, "off (using root hints)\n"); 1355 /* if dp is returned it must be the root */ 1356 log_assert(query_dname_compare(dp->name, root)==0); 1357 return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp); 1358} 1359 1360/** parse args into delegpt */ 1361static struct delegpt* 1362parse_delegpt(SSL* ssl, char* args, uint8_t* nm, int allow_names) 1363{ 1364 /* parse args and add in */ 1365 char* p = args; 1366 char* todo; 1367 struct delegpt* dp = delegpt_create_mlc(nm); 1368 struct sockaddr_storage addr; 1369 socklen_t addrlen; 1370 if(!dp) { 1371 (void)ssl_printf(ssl, "error out of memory\n"); 1372 return NULL; 1373 } 1374 while(p) { 1375 todo = p; 1376 p = strchr(p, ' '); /* find next spot, if any */ 1377 if(p) { 1378 *p++ = 0; /* end this spot */ 1379 p = skipwhite(p); /* position at next spot */ 1380 } 1381 /* parse address */ 1382 if(!extstrtoaddr(todo, &addr, &addrlen)) { 1383 if(allow_names) { 1384 uint8_t* n = NULL; 1385 size_t ln; 1386 int lb; 1387 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) { 1388 (void)ssl_printf(ssl, "error cannot " 1389 "parse IP address or name " 1390 "'%s'\n", todo); 1391 delegpt_free_mlc(dp); 1392 return NULL; 1393 } 1394 if(!delegpt_add_ns_mlc(dp, n, 0)) { 1395 (void)ssl_printf(ssl, "error out of memory\n"); 1396 delegpt_free_mlc(dp); 1397 return NULL; 1398 } 1399 free(n); 1400 1401 } else { 1402 (void)ssl_printf(ssl, "error cannot parse" 1403 " IP address '%s'\n", todo); 1404 delegpt_free_mlc(dp); 1405 return NULL; 1406 } 1407 } else { 1408 /* add address */ 1409 if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0)) { 1410 (void)ssl_printf(ssl, "error out of memory\n"); 1411 delegpt_free_mlc(dp); 1412 return NULL; 1413 } 1414 } 1415 } 1416 return dp; 1417} 1418 1419/** do the status command */ 1420static void 1421do_forward(SSL* ssl, struct worker* worker, char* args) 1422{ 1423 struct iter_forwards* fwd = worker->env.fwds; 1424 uint8_t* root = (uint8_t*)"\000"; 1425 if(!fwd) { 1426 (void)ssl_printf(ssl, "error: structure not allocated\n"); 1427 return; 1428 } 1429 if(args == NULL || args[0] == 0) { 1430 (void)print_root_fwds(ssl, fwd, root); 1431 return; 1432 } 1433 /* set root forwards for this thread. since we are in remote control 1434 * the actual mesh is not running, so we can freely edit it. */ 1435 /* delete all the existing queries first */ 1436 mesh_delete_all(worker->env.mesh); 1437 if(strcmp(args, "off") == 0) { 1438 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root); 1439 } else { 1440 struct delegpt* dp; 1441 if(!(dp = parse_delegpt(ssl, args, root, 0))) 1442 return; 1443 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 1444 (void)ssl_printf(ssl, "error out of memory\n"); 1445 delegpt_free_mlc(dp); 1446 return; 1447 } 1448 } 1449 send_ok(ssl); 1450} 1451 1452static int 1453parse_fs_args(SSL* ssl, char* args, uint8_t** nm, struct delegpt** dp, 1454 int* insecure, int* prime) 1455{ 1456 char* zonename; 1457 char* rest; 1458 size_t nmlen; 1459 int nmlabs; 1460 /* parse all -x args */ 1461 while(args[0] == '+') { 1462 if(!find_arg2(ssl, args, &rest)) 1463 return 0; 1464 while(*(++args) != 0) { 1465 if(*args == 'i' && insecure) 1466 *insecure = 1; 1467 else if(*args == 'p' && prime) 1468 *prime = 1; 1469 else { 1470 (void)ssl_printf(ssl, "error: unknown option %s\n", args); 1471 return 0; 1472 } 1473 } 1474 args = rest; 1475 } 1476 /* parse name */ 1477 if(dp) { 1478 if(!find_arg2(ssl, args, &rest)) 1479 return 0; 1480 zonename = args; 1481 args = rest; 1482 } else zonename = args; 1483 if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs)) 1484 return 0; 1485 1486 /* parse dp */ 1487 if(dp) { 1488 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) { 1489 free(*nm); 1490 return 0; 1491 } 1492 } 1493 return 1; 1494} 1495 1496/** do the forward_add command */ 1497static void 1498do_forward_add(SSL* ssl, struct worker* worker, char* args) 1499{ 1500 struct iter_forwards* fwd = worker->env.fwds; 1501 int insecure = 0; 1502 uint8_t* nm = NULL; 1503 struct delegpt* dp = NULL; 1504 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL)) 1505 return; 1506 if(insecure) { 1507 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 1508 nm)) { 1509 (void)ssl_printf(ssl, "error out of memory\n"); 1510 delegpt_free_mlc(dp); 1511 free(nm); 1512 return; 1513 } 1514 } 1515 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 1516 (void)ssl_printf(ssl, "error out of memory\n"); 1517 delegpt_free_mlc(dp); 1518 free(nm); 1519 return; 1520 } 1521 free(nm); 1522 send_ok(ssl); 1523} 1524 1525/** do the forward_remove command */ 1526static void 1527do_forward_remove(SSL* ssl, struct worker* worker, char* args) 1528{ 1529 struct iter_forwards* fwd = worker->env.fwds; 1530 int insecure = 0; 1531 uint8_t* nm = NULL; 1532 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 1533 return; 1534 if(insecure) 1535 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 1536 nm); 1537 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm); 1538 free(nm); 1539 send_ok(ssl); 1540} 1541 1542/** do the stub_add command */ 1543static void 1544do_stub_add(SSL* ssl, struct worker* worker, char* args) 1545{ 1546 struct iter_forwards* fwd = worker->env.fwds; 1547 int insecure = 0, prime = 0; 1548 uint8_t* nm = NULL; 1549 struct delegpt* dp = NULL; 1550 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime)) 1551 return; 1552 if(insecure) { 1553 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 1554 nm)) { 1555 (void)ssl_printf(ssl, "error out of memory\n"); 1556 delegpt_free_mlc(dp); 1557 free(nm); 1558 return; 1559 } 1560 } 1561 if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) { 1562 if(insecure) anchors_delete_insecure(worker->env.anchors, 1563 LDNS_RR_CLASS_IN, nm); 1564 (void)ssl_printf(ssl, "error out of memory\n"); 1565 delegpt_free_mlc(dp); 1566 free(nm); 1567 return; 1568 } 1569 if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) { 1570 (void)ssl_printf(ssl, "error out of memory\n"); 1571 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 1572 if(insecure) anchors_delete_insecure(worker->env.anchors, 1573 LDNS_RR_CLASS_IN, nm); 1574 delegpt_free_mlc(dp); 1575 free(nm); 1576 return; 1577 } 1578 free(nm); 1579 send_ok(ssl); 1580} 1581 1582/** do the stub_remove command */ 1583static void 1584do_stub_remove(SSL* ssl, struct worker* worker, char* args) 1585{ 1586 struct iter_forwards* fwd = worker->env.fwds; 1587 int insecure = 0; 1588 uint8_t* nm = NULL; 1589 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 1590 return; 1591 if(insecure) 1592 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 1593 nm); 1594 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 1595 hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm); 1596 free(nm); 1597 send_ok(ssl); 1598} 1599 1600/** do the status command */ 1601static void 1602do_status(SSL* ssl, struct worker* worker) 1603{ 1604 int i; 1605 time_t uptime; 1606 if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION)) 1607 return; 1608 if(!ssl_printf(ssl, "verbosity: %d\n", verbosity)) 1609 return; 1610 if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num)) 1611 return; 1612 if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num)) 1613 return; 1614 for(i=0; i<worker->daemon->mods.num; i++) { 1615 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name)) 1616 return; 1617 } 1618 if(!ssl_printf(ssl, " ]\n")) 1619 return; 1620 uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec; 1621 if(!ssl_printf(ssl, "uptime: %u seconds\n", (unsigned)uptime)) 1622 return; 1623 if(!ssl_printf(ssl, "unbound (pid %d) is running...\n", 1624 (int)getpid())) 1625 return; 1626} 1627 1628/** get age for the mesh state */ 1629static void 1630get_mesh_age(struct mesh_state* m, char* buf, size_t len, 1631 struct module_env* env) 1632{ 1633 if(m->reply_list) { 1634 struct timeval d; 1635 struct mesh_reply* r = m->reply_list; 1636 /* last reply is the oldest */ 1637 while(r && r->next) 1638 r = r->next; 1639 timeval_subtract(&d, env->now_tv, &r->start_time); 1640 snprintf(buf, len, "%d.%6.6d", (int)d.tv_sec, (int)d.tv_usec); 1641 } else { 1642 snprintf(buf, len, "-"); 1643 } 1644} 1645 1646/** get status of a mesh state */ 1647static void 1648get_mesh_status(struct mesh_area* mesh, struct mesh_state* m, 1649 char* buf, size_t len) 1650{ 1651 enum module_ext_state s = m->s.ext_state[m->s.curmod]; 1652 const char *modname = mesh->mods.mod[m->s.curmod]->name; 1653 size_t l; 1654 if(strcmp(modname, "iterator") == 0 && s == module_wait_reply && 1655 m->s.minfo[m->s.curmod]) { 1656 /* break into iterator to find out who its waiting for */ 1657 struct iter_qstate* qstate = (struct iter_qstate*) 1658 m->s.minfo[m->s.curmod]; 1659 struct outbound_list* ol = &qstate->outlist; 1660 struct outbound_entry* e; 1661 snprintf(buf, len, "%s wait for", modname); 1662 l = strlen(buf); 1663 buf += l; len -= l; 1664 if(ol->first == NULL) 1665 snprintf(buf, len, " (empty_list)"); 1666 for(e = ol->first; e; e = e->next) { 1667 snprintf(buf, len, " "); 1668 l = strlen(buf); 1669 buf += l; len -= l; 1670 addr_to_str(&e->qsent->addr, e->qsent->addrlen, 1671 buf, len); 1672 l = strlen(buf); 1673 buf += l; len -= l; 1674 } 1675 } else if(s == module_wait_subquery) { 1676 /* look in subs from mesh state to see what */ 1677 char nm[257]; 1678 struct mesh_state_ref* sub; 1679 snprintf(buf, len, "%s wants", modname); 1680 l = strlen(buf); 1681 buf += l; len -= l; 1682 if(m->sub_set.count == 0) 1683 snprintf(buf, len, " (empty_list)"); 1684 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) { 1685 char* t = ldns_rr_type2str(sub->s->s.qinfo.qtype); 1686 char* c = ldns_rr_class2str(sub->s->s.qinfo.qclass); 1687 dname_str(sub->s->s.qinfo.qname, nm); 1688 snprintf(buf, len, " %s %s %s", t, c, nm); 1689 l = strlen(buf); 1690 buf += l; len -= l; 1691 free(t); 1692 free(c); 1693 } 1694 } else { 1695 snprintf(buf, len, "%s is %s", modname, strextstate(s)); 1696 } 1697} 1698 1699/** do the dump_requestlist command */ 1700static void 1701do_dump_requestlist(SSL* ssl, struct worker* worker) 1702{ 1703 struct mesh_area* mesh; 1704 struct mesh_state* m; 1705 int num = 0; 1706 char buf[257]; 1707 char timebuf[32]; 1708 char statbuf[10240]; 1709 if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num)) 1710 return; 1711 if(!ssl_printf(ssl, "# type cl name seconds module status\n")) 1712 return; 1713 /* show worker mesh contents */ 1714 mesh = worker->env.mesh; 1715 if(!mesh) return; 1716 RBTREE_FOR(m, struct mesh_state*, &mesh->all) { 1717 char* t = ldns_rr_type2str(m->s.qinfo.qtype); 1718 char* c = ldns_rr_class2str(m->s.qinfo.qclass); 1719 dname_str(m->s.qinfo.qname, buf); 1720 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env); 1721 get_mesh_status(mesh, m, statbuf, sizeof(statbuf)); 1722 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n", 1723 num, t, c, buf, timebuf, statbuf)) { 1724 free(t); 1725 free(c); 1726 return; 1727 } 1728 num++; 1729 free(t); 1730 free(c); 1731 } 1732} 1733 1734/** structure for argument data for dump infra host */ 1735struct infra_arg { 1736 /** the infra cache */ 1737 struct infra_cache* infra; 1738 /** the SSL connection */ 1739 SSL* ssl; 1740 /** the time now */ 1741 uint32_t now; 1742}; 1743 1744/** callback for every host element in the infra cache */ 1745static void 1746dump_infra_host(struct lruhash_entry* e, void* arg) 1747{ 1748 struct infra_arg* a = (struct infra_arg*)arg; 1749 struct infra_key* k = (struct infra_key*)e->key; 1750 struct infra_data* d = (struct infra_data*)e->data; 1751 char ip_str[1024]; 1752 char name[257]; 1753 addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str)); 1754 dname_str(k->zonename, name); 1755 /* skip expired stuff (only backed off) */ 1756 if(d->ttl < a->now) { 1757 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) { 1758 if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str, 1759 name, d->rtt.rto)) return; 1760 } 1761 return; 1762 } 1763 if(!ssl_printf(a->ssl, "%s %s ttl %d ping %d var %d rtt %d rto %d " 1764 "tA %d tAAAA %d tother %d " 1765 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d " 1766 "other %d\n", ip_str, name, (int)(d->ttl - a->now), 1767 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto, 1768 d->timeout_A, d->timeout_AAAA, d->timeout_other, 1769 (int)d->edns_lame_known, (int)d->edns_version, 1770 (int)(a->now<d->probedelay?d->probedelay-a->now:0), 1771 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A, 1772 (int)d->lame_other)) 1773 return; 1774} 1775 1776/** do the dump_infra command */ 1777static void 1778do_dump_infra(SSL* ssl, struct worker* worker) 1779{ 1780 struct infra_arg arg; 1781 arg.infra = worker->env.infra_cache; 1782 arg.ssl = ssl; 1783 arg.now = *worker->env.now; 1784 slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg); 1785} 1786 1787/** do the log_reopen command */ 1788static void 1789do_log_reopen(SSL* ssl, struct worker* worker) 1790{ 1791 struct config_file* cfg = worker->env.cfg; 1792 send_ok(ssl); 1793 log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir); 1794} 1795 1796/** do the set_option command */ 1797static void 1798do_set_option(SSL* ssl, struct worker* worker, char* arg) 1799{ 1800 char* arg2; 1801 if(!find_arg2(ssl, arg, &arg2)) 1802 return; 1803 if(!config_set_option(worker->env.cfg, arg, arg2)) { 1804 (void)ssl_printf(ssl, "error setting option\n"); 1805 return; 1806 } 1807 send_ok(ssl); 1808} 1809 1810/* routine to printout option values over SSL */ 1811void remote_get_opt_ssl(char* line, void* arg) 1812{ 1813 SSL* ssl = (SSL*)arg; 1814 (void)ssl_printf(ssl, "%s\n", line); 1815} 1816 1817/** do the get_option command */ 1818static void 1819do_get_option(SSL* ssl, struct worker* worker, char* arg) 1820{ 1821 int r; 1822 r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl); 1823 if(!r) { 1824 (void)ssl_printf(ssl, "error unknown option\n"); 1825 return; 1826 } 1827} 1828 1829/** do the list_forwards command */ 1830static void 1831do_list_forwards(SSL* ssl, struct worker* worker) 1832{ 1833 /* since its a per-worker structure no locks needed */ 1834 struct iter_forwards* fwds = worker->env.fwds; 1835 struct iter_forward_zone* z; 1836 RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) { 1837 if(!z->dp) continue; /* skip empty marker for stub */ 1838 if(!ssl_print_name_dp(ssl, "forward", z->name, z->dclass, 1839 z->dp)) 1840 return; 1841 } 1842} 1843 1844/** do the list_stubs command */ 1845static void 1846do_list_stubs(SSL* ssl, struct worker* worker) 1847{ 1848 struct iter_hints_stub* z; 1849 RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) { 1850 if(!ssl_print_name_dp(ssl, 1851 z->noprime?"stub noprime":"stub prime", z->node.name, 1852 z->node.dclass, z->dp)) 1853 return; 1854 } 1855} 1856 1857/** do the list_local_zones command */ 1858static void 1859do_list_local_zones(SSL* ssl, struct worker* worker) 1860{ 1861 struct local_zones* zones = worker->daemon->local_zones; 1862 struct local_zone* z; 1863 char buf[257]; 1864 lock_quick_lock(&zones->lock); 1865 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 1866 lock_rw_rdlock(&z->lock); 1867 dname_str(z->name, buf); 1868 (void)ssl_printf(ssl, "%s %s\n", buf, 1869 local_zone_type2str(z->type)); 1870 lock_rw_unlock(&z->lock); 1871 } 1872 lock_quick_unlock(&zones->lock); 1873} 1874 1875/** do the list_local_data command */ 1876static void 1877do_list_local_data(SSL* ssl, struct worker* worker) 1878{ 1879 struct local_zones* zones = worker->daemon->local_zones; 1880 struct local_zone* z; 1881 struct local_data* d; 1882 struct local_rrset* p; 1883 lock_quick_lock(&zones->lock); 1884 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 1885 lock_rw_rdlock(&z->lock); 1886 RBTREE_FOR(d, struct local_data*, &z->data) { 1887 for(p = d->rrsets; p; p = p->next) { 1888 ldns_rr_list* rr = packed_rrset_to_rr_list( 1889 p->rrset, worker->env.scratch_buffer); 1890 char* str = ldns_rr_list2str(rr); 1891 (void)ssl_printf(ssl, "%s", str); 1892 free(str); 1893 ldns_rr_list_free(rr); 1894 } 1895 } 1896 lock_rw_unlock(&z->lock); 1897 } 1898 lock_quick_unlock(&zones->lock); 1899} 1900 1901/** tell other processes to execute the command */ 1902static void 1903distribute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd) 1904{ 1905 int i; 1906 if(!cmd || !ssl) 1907 return; 1908 /* skip i=0 which is me */ 1909 for(i=1; i<rc->worker->daemon->num; i++) { 1910 worker_send_cmd(rc->worker->daemon->workers[i], 1911 worker_cmd_remote); 1912 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd, 1913 (uint8_t*)cmd, strlen(cmd)+1, 0)) { 1914 ssl_printf(ssl, "error could not distribute cmd\n"); 1915 return; 1916 } 1917 } 1918} 1919 1920/** check for name with end-of-string, space or tab after it */ 1921static int 1922cmdcmp(char* p, const char* cmd, size_t len) 1923{ 1924 return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t'); 1925} 1926 1927/** execute a remote control command */ 1928static void 1929execute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd, 1930 struct worker* worker) 1931{ 1932 char* p = skipwhite(cmd); 1933 /* compare command */ 1934 if(cmdcmp(p, "stop", 4)) { 1935 do_stop(ssl, rc); 1936 return; 1937 } else if(cmdcmp(p, "reload", 6)) { 1938 do_reload(ssl, rc); 1939 return; 1940 } else if(cmdcmp(p, "stats_noreset", 13)) { 1941 do_stats(ssl, rc, 0); 1942 return; 1943 } else if(cmdcmp(p, "stats", 5)) { 1944 do_stats(ssl, rc, 1); 1945 return; 1946 } else if(cmdcmp(p, "status", 6)) { 1947 do_status(ssl, worker); 1948 return; 1949 } else if(cmdcmp(p, "dump_cache", 10)) { 1950 (void)dump_cache(ssl, worker); 1951 return; 1952 } else if(cmdcmp(p, "load_cache", 10)) { 1953 if(load_cache(ssl, worker)) send_ok(ssl); 1954 return; 1955 } else if(cmdcmp(p, "list_forwards", 13)) { 1956 do_list_forwards(ssl, worker); 1957 return; 1958 } else if(cmdcmp(p, "list_stubs", 10)) { 1959 do_list_stubs(ssl, worker); 1960 return; 1961 } else if(cmdcmp(p, "list_local_zones", 16)) { 1962 do_list_local_zones(ssl, worker); 1963 return; 1964 } else if(cmdcmp(p, "list_local_data", 15)) { 1965 do_list_local_data(ssl, worker); 1966 return; 1967 } else if(cmdcmp(p, "stub_add", 8)) { 1968 /* must always distribute this cmd */ 1969 if(rc) distribute_cmd(rc, ssl, cmd); 1970 do_stub_add(ssl, worker, skipwhite(p+8)); 1971 return; 1972 } else if(cmdcmp(p, "stub_remove", 11)) { 1973 /* must always distribute this cmd */ 1974 if(rc) distribute_cmd(rc, ssl, cmd); 1975 do_stub_remove(ssl, worker, skipwhite(p+11)); 1976 return; 1977 } else if(cmdcmp(p, "forward_add", 11)) { 1978 /* must always distribute this cmd */ 1979 if(rc) distribute_cmd(rc, ssl, cmd); 1980 do_forward_add(ssl, worker, skipwhite(p+11)); 1981 return; 1982 } else if(cmdcmp(p, "forward_remove", 14)) { 1983 /* must always distribute this cmd */ 1984 if(rc) distribute_cmd(rc, ssl, cmd); 1985 do_forward_remove(ssl, worker, skipwhite(p+14)); 1986 return; 1987 } else if(cmdcmp(p, "forward", 7)) { 1988 /* must always distribute this cmd */ 1989 if(rc) distribute_cmd(rc, ssl, cmd); 1990 do_forward(ssl, worker, skipwhite(p+7)); 1991 return; 1992 } else if(cmdcmp(p, "flush_stats", 11)) { 1993 /* must always distribute this cmd */ 1994 if(rc) distribute_cmd(rc, ssl, cmd); 1995 do_flush_stats(ssl, worker); 1996 return; 1997 } else if(cmdcmp(p, "flush_requestlist", 17)) { 1998 /* must always distribute this cmd */ 1999 if(rc) distribute_cmd(rc, ssl, cmd); 2000 do_flush_requestlist(ssl, worker); 2001 return; 2002 } else if(cmdcmp(p, "lookup", 6)) { 2003 do_lookup(ssl, worker, skipwhite(p+6)); 2004 return; 2005 } 2006 2007#ifdef THREADS_DISABLED 2008 /* other processes must execute the command as well */ 2009 /* commands that should not be distributed, returned above. */ 2010 if(rc) { /* only if this thread is the master (rc) thread */ 2011 /* done before the code below, which may split the string */ 2012 distribute_cmd(rc, ssl, cmd); 2013 } 2014#endif 2015 if(cmdcmp(p, "verbosity", 9)) { 2016 do_verbosity(ssl, skipwhite(p+9)); 2017 } else if(cmdcmp(p, "local_zone_remove", 17)) { 2018 do_zone_remove(ssl, worker, skipwhite(p+17)); 2019 } else if(cmdcmp(p, "local_zone", 10)) { 2020 do_zone_add(ssl, worker, skipwhite(p+10)); 2021 } else if(cmdcmp(p, "local_data_remove", 17)) { 2022 do_data_remove(ssl, worker, skipwhite(p+17)); 2023 } else if(cmdcmp(p, "local_data", 10)) { 2024 do_data_add(ssl, worker, skipwhite(p+10)); 2025 } else if(cmdcmp(p, "flush_zone", 10)) { 2026 do_flush_zone(ssl, worker, skipwhite(p+10)); 2027 } else if(cmdcmp(p, "flush_type", 10)) { 2028 do_flush_type(ssl, worker, skipwhite(p+10)); 2029 } else if(cmdcmp(p, "flush_infra", 11)) { 2030 do_flush_infra(ssl, worker, skipwhite(p+11)); 2031 } else if(cmdcmp(p, "flush", 5)) { 2032 do_flush_name(ssl, worker, skipwhite(p+5)); 2033 } else if(cmdcmp(p, "dump_requestlist", 16)) { 2034 do_dump_requestlist(ssl, worker); 2035 } else if(cmdcmp(p, "dump_infra", 10)) { 2036 do_dump_infra(ssl, worker); 2037 } else if(cmdcmp(p, "log_reopen", 10)) { 2038 do_log_reopen(ssl, worker); 2039 } else if(cmdcmp(p, "set_option", 10)) { 2040 do_set_option(ssl, worker, skipwhite(p+10)); 2041 } else if(cmdcmp(p, "get_option", 10)) { 2042 do_get_option(ssl, worker, skipwhite(p+10)); 2043 } else { 2044 (void)ssl_printf(ssl, "error unknown command '%s'\n", p); 2045 } 2046} 2047 2048void 2049daemon_remote_exec(struct worker* worker) 2050{ 2051 /* read the cmd string */ 2052 uint8_t* msg = NULL; 2053 uint32_t len = 0; 2054 if(!tube_read_msg(worker->cmd, &msg, &len, 0)) { 2055 log_err("daemon_remote_exec: tube_read_msg failed"); 2056 return; 2057 } 2058 verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg); 2059 execute_cmd(NULL, NULL, (char*)msg, worker); 2060 free(msg); 2061} 2062 2063/** handle remote control request */ 2064static void 2065handle_req(struct daemon_remote* rc, struct rc_state* s, SSL* ssl) 2066{ 2067 int r; 2068 char pre[10]; 2069 char magic[7]; 2070 char buf[1024]; 2071#ifdef USE_WINSOCK 2072 /* makes it possible to set the socket blocking again. */ 2073 /* basically removes it from winsock_event ... */ 2074 WSAEventSelect(s->c->fd, NULL, 0); 2075#endif 2076 fd_set_block(s->c->fd); 2077 2078 /* try to read magic UBCT[version]_space_ string */ 2079 ERR_clear_error(); 2080 if((r=SSL_read(ssl, magic, (int)sizeof(magic)-1)) <= 0) { 2081 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) 2082 return; 2083 log_crypto_err("could not SSL_read"); 2084 return; 2085 } 2086 magic[6] = 0; 2087 if( r != 6 || strncmp(magic, "UBCT", 4) != 0) { 2088 verbose(VERB_QUERY, "control connection has bad magic string"); 2089 /* probably wrong tool connected, ignore it completely */ 2090 return; 2091 } 2092 2093 /* read the command line */ 2094 if(!ssl_read_line(ssl, buf, sizeof(buf))) { 2095 return; 2096 } 2097 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION); 2098 if(strcmp(magic, pre) != 0) { 2099 verbose(VERB_QUERY, "control connection had bad " 2100 "version %s, cmd: %s", magic, buf); 2101 ssl_printf(ssl, "error version mismatch\n"); 2102 return; 2103 } 2104 verbose(VERB_DETAIL, "control cmd: %s", buf); 2105 2106 /* figure out what to do */ 2107 execute_cmd(rc, ssl, buf, rc->worker); 2108} 2109 2110int remote_control_callback(struct comm_point* c, void* arg, int err, 2111 struct comm_reply* ATTR_UNUSED(rep)) 2112{ 2113 struct rc_state* s = (struct rc_state*)arg; 2114 struct daemon_remote* rc = s->rc; 2115 int r; 2116 if(err != NETEVENT_NOERROR) { 2117 if(err==NETEVENT_TIMEOUT) 2118 log_err("remote control timed out"); 2119 clean_point(rc, s); 2120 return 0; 2121 } 2122 /* (continue to) setup the SSL connection */ 2123 ERR_clear_error(); 2124 r = SSL_do_handshake(s->ssl); 2125 if(r != 1) { 2126 int r2 = SSL_get_error(s->ssl, r); 2127 if(r2 == SSL_ERROR_WANT_READ) { 2128 if(s->shake_state == rc_hs_read) { 2129 /* try again later */ 2130 return 0; 2131 } 2132 s->shake_state = rc_hs_read; 2133 comm_point_listen_for_rw(c, 1, 0); 2134 return 0; 2135 } else if(r2 == SSL_ERROR_WANT_WRITE) { 2136 if(s->shake_state == rc_hs_write) { 2137 /* try again later */ 2138 return 0; 2139 } 2140 s->shake_state = rc_hs_write; 2141 comm_point_listen_for_rw(c, 0, 1); 2142 return 0; 2143 } else { 2144 if(r == 0) 2145 log_err("remote control connection closed prematurely"); 2146 log_addr(1, "failed connection from", 2147 &s->c->repinfo.addr, s->c->repinfo.addrlen); 2148 log_crypto_err("remote control failed ssl"); 2149 clean_point(rc, s); 2150 return 0; 2151 } 2152 } 2153 s->shake_state = rc_none; 2154 2155 /* once handshake has completed, check authentication */ 2156 if(SSL_get_verify_result(s->ssl) == X509_V_OK) { 2157 X509* x = SSL_get_peer_certificate(s->ssl); 2158 if(!x) { 2159 verbose(VERB_DETAIL, "remote control connection " 2160 "provided no client certificate"); 2161 clean_point(rc, s); 2162 return 0; 2163 } 2164 verbose(VERB_ALGO, "remote control connection authenticated"); 2165 X509_free(x); 2166 } else { 2167 verbose(VERB_DETAIL, "remote control connection failed to " 2168 "authenticate with client certificate"); 2169 clean_point(rc, s); 2170 return 0; 2171 } 2172 2173 /* if OK start to actually handle the request */ 2174 handle_req(rc, s, s->ssl); 2175 2176 verbose(VERB_ALGO, "remote control operation completed"); 2177 clean_point(rc, s); 2178 return 0; 2179} 2180