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 "util/storage/slabhash.h" 72 #include "util/fptr_wlist.h" 73 #include "util/data/dname.h" 74 #include "validator/validator.h" 75 #include "validator/val_kcache.h" 76 #include "validator/val_kentry.h" 77 #include "validator/val_anchor.h" 78 #include "iterator/iterator.h" 79 #include "iterator/iter_fwd.h" 80 #include "iterator/iter_hints.h" 81 #include "iterator/iter_delegpt.h" 82 #include "services/outbound_list.h" 83 #include "services/outside_network.h" 84 #include "sldns/str2wire.h" 85 #include "sldns/parseutil.h" 86 #include "sldns/wire2str.h" 87 #include "sldns/sbuffer.h" 88 89 #ifdef HAVE_SYS_TYPES_H 90 # include <sys/types.h> 91 #endif 92 #ifdef HAVE_SYS_STAT_H 93 #include <sys/stat.h> 94 #endif 95 #ifdef HAVE_NETDB_H 96 #include <netdb.h> 97 #endif 98 99 /* just for portability */ 100 #ifdef SQ 101 #undef SQ 102 #endif 103 104 /** what to put on statistics lines between var and value, ": " or "=" */ 105 #define SQ "=" 106 /** if true, inhibits a lot of =0 lines from the stats output */ 107 static const int inhibit_zero = 1; 108 109 /** subtract timers and the values do not overflow or become negative */ 110 static void 111 timeval_subtract(struct timeval* d, const struct timeval* end, 112 const struct timeval* start) 113 { 114 #ifndef S_SPLINT_S 115 time_t end_usec = end->tv_usec; 116 d->tv_sec = end->tv_sec - start->tv_sec; 117 if(end_usec < start->tv_usec) { 118 end_usec += 1000000; 119 d->tv_sec--; 120 } 121 d->tv_usec = end_usec - start->tv_usec; 122 #endif 123 } 124 125 /** divide sum of timers to get average */ 126 static void 127 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d) 128 { 129 #ifndef S_SPLINT_S 130 size_t leftover; 131 if(d == 0) { 132 avg->tv_sec = 0; 133 avg->tv_usec = 0; 134 return; 135 } 136 avg->tv_sec = sum->tv_sec / d; 137 avg->tv_usec = sum->tv_usec / d; 138 /* handle fraction from seconds divide */ 139 leftover = sum->tv_sec - avg->tv_sec*d; 140 avg->tv_usec += (leftover*1000000)/d; 141 #endif 142 } 143 144 /* 145 * The following function was generated using the openssl utility, using 146 * the command : "openssl dhparam -C 2048" 147 * (some openssl versions reject DH that is 'too small', eg. 512). 148 */ 149 #if OPENSSL_VERSION_NUMBER < 0x10100000 || defined(HAVE_LIBRESSL) 150 #ifndef S_SPLINT_S 151 static DH *get_dh2048(void) 152 { 153 static unsigned char dh2048_p[]={ 154 0xE7,0x36,0x28,0x3B,0xE4,0xC3,0x32,0x1C,0x01,0xC3,0x67,0xD6, 155 0xF5,0xF3,0xDA,0xDC,0x71,0xC0,0x42,0x8B,0xE6,0xEB,0x8D,0x80, 156 0x35,0x7F,0x09,0x45,0x30,0xE5,0xB2,0x92,0x81,0x3F,0x08,0xCD, 157 0x36,0x5E,0x19,0x83,0x62,0xCC,0xAE,0x9B,0x81,0x66,0x24,0xEE, 158 0x16,0x6F,0xA9,0x9E,0xF4,0x82,0x1B,0xDD,0x46,0xC7,0x33,0x5D, 159 0xF4,0xCA,0xE6,0x8F,0xFC,0xD4,0xD8,0x58,0x94,0x24,0x5D,0xFF, 160 0x0A,0xE8,0xEF,0x3D,0xCE,0xBB,0x50,0x94,0xE0,0x5F,0xE8,0x41, 161 0xC3,0x35,0x30,0x37,0xD5,0xCB,0x8F,0x3D,0x95,0x15,0x1A,0x77, 162 0x42,0xB2,0x06,0x86,0xF6,0x09,0x66,0x0E,0x9A,0x25,0x94,0x3E, 163 0xD2,0x04,0x25,0x25,0x1D,0x23,0xEB,0xDC,0x4D,0x0C,0x83,0x28, 164 0x2E,0x15,0x81,0x2D,0xC1,0xAF,0x8D,0x36,0x64,0xE3,0x9A,0x83, 165 0x78,0xC2,0x8D,0xC0,0x9D,0xD9,0x3A,0x1C,0xC5,0x2B,0x50,0x68, 166 0x07,0xA9,0x4B,0x8C,0x07,0x57,0xD6,0x15,0x03,0x4E,0x9E,0x01, 167 0xF2,0x6F,0x35,0xAC,0x26,0x9C,0x92,0x68,0x61,0x13,0xFB,0x01, 168 0xBA,0x22,0x36,0x01,0x55,0xB6,0x62,0xD9,0xB2,0x98,0xCE,0x5D, 169 0x4B,0xA5,0x41,0xD6,0xE5,0x70,0x78,0x12,0x1F,0x64,0xB6,0x6F, 170 0xB0,0x91,0x51,0x91,0x92,0xC0,0x94,0x3A,0xD1,0x28,0x4D,0x30, 171 0x84,0x3E,0xE4,0xE4,0x7F,0x47,0x89,0xB1,0xB6,0x8C,0x8E,0x0E, 172 0x26,0xDB,0xCD,0x17,0x07,0x2A,0x21,0x7A,0xCC,0x68,0xE8,0x57, 173 0x94,0x9E,0x59,0x61,0xEC,0x20,0x34,0x26,0x0D,0x66,0x44,0xEB, 174 0x6F,0x02,0x58,0xE2,0xED,0xF6,0xF3,0x1B,0xBF,0x9E,0x45,0x52, 175 0x5A,0x49,0xA1,0x5B, 176 }; 177 static unsigned char dh2048_g[]={ 178 0x02, 179 }; 180 DH *dh = NULL; 181 BIGNUM *p = NULL, *g = NULL; 182 183 dh = DH_new(); 184 p = BN_bin2bn(dh2048_p, sizeof(dh2048_p), NULL); 185 g = BN_bin2bn(dh2048_g, sizeof(dh2048_g), NULL); 186 if (!dh || !p || !g) 187 goto err; 188 189 #if OPENSSL_VERSION_NUMBER < 0x10100000 || defined(HAVE_LIBRESSL) 190 dh->p = p; 191 dh->g = g; 192 #else 193 if (!DH_set0_pqg(dh, p, NULL, g)) 194 goto err; 195 #endif 196 return dh; 197 err: 198 if (p) 199 BN_free(p); 200 if (g) 201 BN_free(g); 202 if (dh) 203 DH_free(dh); 204 return NULL; 205 } 206 #endif /* SPLINT */ 207 #endif /* OPENSSL_VERSION_NUMBER < 0x10100000 */ 208 209 struct daemon_remote* 210 daemon_remote_create(struct config_file* cfg) 211 { 212 char* s_cert; 213 char* s_key; 214 struct daemon_remote* rc = (struct daemon_remote*)calloc(1, 215 sizeof(*rc)); 216 if(!rc) { 217 log_err("out of memory in daemon_remote_create"); 218 return NULL; 219 } 220 rc->max_active = 10; 221 222 if(!cfg->remote_control_enable) { 223 rc->ctx = NULL; 224 return rc; 225 } 226 rc->ctx = SSL_CTX_new(SSLv23_server_method()); 227 if(!rc->ctx) { 228 log_crypto_err("could not SSL_CTX_new"); 229 free(rc); 230 return NULL; 231 } 232 if(!listen_sslctx_setup(rc->ctx)) { 233 daemon_remote_delete(rc); 234 return NULL; 235 } 236 237 if (cfg->remote_control_use_cert == 0) { 238 /* No certificates are requested */ 239 #ifdef HAVE_SSL_CTX_SET_SECURITY_LEVEL 240 SSL_CTX_set_security_level(rc->ctx, 0); 241 #endif 242 if(!SSL_CTX_set_cipher_list(rc->ctx, "aNULL, eNULL")) { 243 log_crypto_err("Failed to set aNULL cipher list"); 244 daemon_remote_delete(rc); 245 return NULL; 246 } 247 248 /* in openssl 1.1, the securitylevel 0 allows eNULL, that 249 * does not need the DH */ 250 #if OPENSSL_VERSION_NUMBER < 0x10100000 || defined(HAVE_LIBRESSL) 251 /* Since we have no certificates and hence no source of 252 * DH params, let's generate and set them 253 */ 254 if(!SSL_CTX_set_tmp_dh(rc->ctx,get_dh2048())) { 255 log_crypto_err("Wanted to set DH param, but failed"); 256 daemon_remote_delete(rc); 257 return NULL; 258 } 259 #endif 260 return rc; 261 } 262 rc->use_cert = 1; 263 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1); 264 s_key = fname_after_chroot(cfg->server_key_file, cfg, 1); 265 if(!s_cert || !s_key) { 266 log_err("out of memory in remote control fname"); 267 goto setup_error; 268 } 269 verbose(VERB_ALGO, "setup SSL certificates"); 270 if (!SSL_CTX_use_certificate_chain_file(rc->ctx,s_cert)) { 271 log_err("Error for server-cert-file: %s", s_cert); 272 log_crypto_err("Error in SSL_CTX use_certificate_chain_file"); 273 goto setup_error; 274 } 275 if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) { 276 log_err("Error for server-key-file: %s", s_key); 277 log_crypto_err("Error in SSL_CTX use_PrivateKey_file"); 278 goto setup_error; 279 } 280 if(!SSL_CTX_check_private_key(rc->ctx)) { 281 log_err("Error for server-key-file: %s", s_key); 282 log_crypto_err("Error in SSL_CTX check_private_key"); 283 goto setup_error; 284 } 285 listen_sslctx_setup_2(rc->ctx); 286 if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) { 287 log_crypto_err("Error setting up SSL_CTX verify locations"); 288 setup_error: 289 free(s_cert); 290 free(s_key); 291 daemon_remote_delete(rc); 292 return NULL; 293 } 294 SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert)); 295 SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL); 296 free(s_cert); 297 free(s_key); 298 299 return rc; 300 } 301 302 void daemon_remote_clear(struct daemon_remote* rc) 303 { 304 struct rc_state* p, *np; 305 if(!rc) return; 306 /* but do not close the ports */ 307 listen_list_delete(rc->accept_list); 308 rc->accept_list = NULL; 309 /* do close these sockets */ 310 p = rc->busy_list; 311 while(p) { 312 np = p->next; 313 if(p->ssl) 314 SSL_free(p->ssl); 315 comm_point_delete(p->c); 316 free(p); 317 p = np; 318 } 319 rc->busy_list = NULL; 320 rc->active = 0; 321 rc->worker = NULL; 322 } 323 324 void daemon_remote_delete(struct daemon_remote* rc) 325 { 326 if(!rc) return; 327 daemon_remote_clear(rc); 328 if(rc->ctx) { 329 SSL_CTX_free(rc->ctx); 330 } 331 free(rc); 332 } 333 334 /** 335 * Add and open a new control port 336 * @param ip: ip str 337 * @param nr: port nr 338 * @param list: list head 339 * @param noproto_is_err: if lack of protocol support is an error. 340 * @param cfg: config with username for chown of unix-sockets. 341 * @return false on failure. 342 */ 343 static int 344 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err, 345 struct config_file* cfg) 346 { 347 struct addrinfo hints; 348 struct addrinfo* res; 349 struct listen_port* n; 350 int noproto; 351 int fd, r; 352 char port[15]; 353 snprintf(port, sizeof(port), "%d", nr); 354 port[sizeof(port)-1]=0; 355 memset(&hints, 0, sizeof(hints)); 356 357 if(ip[0] == '/') { 358 /* This looks like a local socket */ 359 fd = create_local_accept_sock(ip, &noproto, cfg->use_systemd); 360 /* 361 * Change socket ownership and permissions so users other 362 * than root can access it provided they are in the same 363 * group as the user we run as. 364 */ 365 if(fd != -1) { 366 #ifdef HAVE_CHOWN 367 if (cfg->username && cfg->username[0] && 368 cfg_uid != (uid_t)-1) { 369 if(chown(ip, cfg_uid, cfg_gid) == -1) 370 verbose(VERB_QUERY, "cannot chown %u.%u %s: %s", 371 (unsigned)cfg_uid, (unsigned)cfg_gid, 372 ip, strerror(errno)); 373 } 374 chmod(ip, (mode_t)(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP)); 375 #else 376 (void)cfg; 377 #endif 378 } 379 } else { 380 hints.ai_socktype = SOCK_STREAM; 381 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST; 382 if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) { 383 #ifdef USE_WINSOCK 384 if(!noproto_is_err && r == EAI_NONAME) { 385 /* tried to lookup the address as name */ 386 return 1; /* return success, but do nothing */ 387 } 388 #endif /* USE_WINSOCK */ 389 log_err("control interface %s:%s getaddrinfo: %s %s", 390 ip?ip:"default", port, gai_strerror(r), 391 #ifdef EAI_SYSTEM 392 r==EAI_SYSTEM?(char*)strerror(errno):"" 393 #else 394 "" 395 #endif 396 ); 397 return 0; 398 } 399 400 /* open fd */ 401 fd = create_tcp_accept_sock(res, 1, &noproto, 0, 402 cfg->ip_transparent, 0, cfg->ip_freebind, cfg->use_systemd); 403 freeaddrinfo(res); 404 } 405 406 if(fd == -1 && noproto) { 407 if(!noproto_is_err) 408 return 1; /* return success, but do nothing */ 409 log_err("cannot open control interface %s %d : " 410 "protocol not supported", ip, nr); 411 return 0; 412 } 413 if(fd == -1) { 414 log_err("cannot open control interface %s %d", ip, nr); 415 return 0; 416 } 417 418 /* alloc */ 419 n = (struct listen_port*)calloc(1, sizeof(*n)); 420 if(!n) { 421 #ifndef USE_WINSOCK 422 close(fd); 423 #else 424 closesocket(fd); 425 #endif 426 log_err("out of memory"); 427 return 0; 428 } 429 n->next = *list; 430 *list = n; 431 n->fd = fd; 432 return 1; 433 } 434 435 struct listen_port* daemon_remote_open_ports(struct config_file* cfg) 436 { 437 struct listen_port* l = NULL; 438 log_assert(cfg->remote_control_enable && cfg->control_port); 439 if(cfg->control_ifs) { 440 struct config_strlist* p; 441 for(p = cfg->control_ifs; p; p = p->next) { 442 if(!add_open(p->str, cfg->control_port, &l, 1, cfg)) { 443 listening_ports_free(l); 444 return NULL; 445 } 446 } 447 } else { 448 /* defaults */ 449 if(cfg->do_ip6 && 450 !add_open("::1", cfg->control_port, &l, 0, cfg)) { 451 listening_ports_free(l); 452 return NULL; 453 } 454 if(cfg->do_ip4 && 455 !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) { 456 listening_ports_free(l); 457 return NULL; 458 } 459 } 460 return l; 461 } 462 463 /** open accept commpoint */ 464 static int 465 accept_open(struct daemon_remote* rc, int fd) 466 { 467 struct listen_list* n = (struct listen_list*)malloc(sizeof(*n)); 468 if(!n) { 469 log_err("out of memory"); 470 return 0; 471 } 472 n->next = rc->accept_list; 473 rc->accept_list = n; 474 /* open commpt */ 475 n->com = comm_point_create_raw(rc->worker->base, fd, 0, 476 &remote_accept_callback, rc); 477 if(!n->com) 478 return 0; 479 /* keep this port open, its fd is kept in the rc portlist */ 480 n->com->do_not_close = 1; 481 return 1; 482 } 483 484 int daemon_remote_open_accept(struct daemon_remote* rc, 485 struct listen_port* ports, struct worker* worker) 486 { 487 struct listen_port* p; 488 rc->worker = worker; 489 for(p = ports; p; p = p->next) { 490 if(!accept_open(rc, p->fd)) { 491 log_err("could not create accept comm point"); 492 return 0; 493 } 494 } 495 return 1; 496 } 497 498 void daemon_remote_stop_accept(struct daemon_remote* rc) 499 { 500 struct listen_list* p; 501 for(p=rc->accept_list; p; p=p->next) { 502 comm_point_stop_listening(p->com); 503 } 504 } 505 506 void daemon_remote_start_accept(struct daemon_remote* rc) 507 { 508 struct listen_list* p; 509 for(p=rc->accept_list; p; p=p->next) { 510 comm_point_start_listening(p->com, -1, -1); 511 } 512 } 513 514 int remote_accept_callback(struct comm_point* c, void* arg, int err, 515 struct comm_reply* ATTR_UNUSED(rep)) 516 { 517 struct daemon_remote* rc = (struct daemon_remote*)arg; 518 struct sockaddr_storage addr; 519 socklen_t addrlen; 520 int newfd; 521 struct rc_state* n; 522 if(err != NETEVENT_NOERROR) { 523 log_err("error %d on remote_accept_callback", err); 524 return 0; 525 } 526 /* perform the accept */ 527 newfd = comm_point_perform_accept(c, &addr, &addrlen); 528 if(newfd == -1) 529 return 0; 530 /* create new commpoint unless we are servicing already */ 531 if(rc->active >= rc->max_active) { 532 log_warn("drop incoming remote control: too many connections"); 533 close_exit: 534 #ifndef USE_WINSOCK 535 close(newfd); 536 #else 537 closesocket(newfd); 538 #endif 539 return 0; 540 } 541 542 /* setup commpoint to service the remote control command */ 543 n = (struct rc_state*)calloc(1, sizeof(*n)); 544 if(!n) { 545 log_err("out of memory"); 546 goto close_exit; 547 } 548 /* start in reading state */ 549 n->c = comm_point_create_raw(rc->worker->base, newfd, 0, 550 &remote_control_callback, n); 551 if(!n->c) { 552 log_err("out of memory"); 553 free(n); 554 goto close_exit; 555 } 556 log_addr(VERB_QUERY, "new control connection from", &addr, addrlen); 557 n->c->do_not_close = 0; 558 comm_point_stop_listening(n->c); 559 comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT); 560 memcpy(&n->c->repinfo.addr, &addr, addrlen); 561 n->c->repinfo.addrlen = addrlen; 562 n->shake_state = rc_hs_read; 563 n->ssl = SSL_new(rc->ctx); 564 if(!n->ssl) { 565 log_crypto_err("could not SSL_new"); 566 comm_point_delete(n->c); 567 free(n); 568 goto close_exit; 569 } 570 SSL_set_accept_state(n->ssl); 571 (void)SSL_set_mode(n->ssl, SSL_MODE_AUTO_RETRY); 572 if(!SSL_set_fd(n->ssl, newfd)) { 573 log_crypto_err("could not SSL_set_fd"); 574 SSL_free(n->ssl); 575 comm_point_delete(n->c); 576 free(n); 577 goto close_exit; 578 } 579 580 n->rc = rc; 581 n->next = rc->busy_list; 582 rc->busy_list = n; 583 rc->active ++; 584 585 /* perform the first nonblocking read already, for windows, 586 * so it can return wouldblock. could be faster too. */ 587 (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL); 588 return 0; 589 } 590 591 /** delete from list */ 592 static void 593 state_list_remove_elem(struct rc_state** list, struct comm_point* c) 594 { 595 while(*list) { 596 if( (*list)->c == c) { 597 *list = (*list)->next; 598 return; 599 } 600 list = &(*list)->next; 601 } 602 } 603 604 /** decrease active count and remove commpoint from busy list */ 605 static void 606 clean_point(struct daemon_remote* rc, struct rc_state* s) 607 { 608 state_list_remove_elem(&rc->busy_list, s->c); 609 rc->active --; 610 if(s->ssl) { 611 SSL_shutdown(s->ssl); 612 SSL_free(s->ssl); 613 } 614 comm_point_delete(s->c); 615 free(s); 616 } 617 618 int 619 ssl_print_text(SSL* ssl, const char* text) 620 { 621 int r; 622 if(!ssl) 623 return 0; 624 ERR_clear_error(); 625 if((r=SSL_write(ssl, text, (int)strlen(text))) <= 0) { 626 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) { 627 verbose(VERB_QUERY, "warning, in SSL_write, peer " 628 "closed connection"); 629 return 0; 630 } 631 log_crypto_err("could not SSL_write"); 632 return 0; 633 } 634 return 1; 635 } 636 637 /** print text over the ssl connection */ 638 static int 639 ssl_print_vmsg(SSL* ssl, const char* format, va_list args) 640 { 641 char msg[1024]; 642 vsnprintf(msg, sizeof(msg), format, args); 643 return ssl_print_text(ssl, msg); 644 } 645 646 /** printf style printing to the ssl connection */ 647 int ssl_printf(SSL* ssl, const char* format, ...) 648 { 649 va_list args; 650 int ret; 651 va_start(args, format); 652 ret = ssl_print_vmsg(ssl, format, args); 653 va_end(args); 654 return ret; 655 } 656 657 int 658 ssl_read_line(SSL* ssl, char* buf, size_t max) 659 { 660 int r; 661 size_t len = 0; 662 if(!ssl) 663 return 0; 664 while(len < max) { 665 ERR_clear_error(); 666 if((r=SSL_read(ssl, buf+len, 1)) <= 0) { 667 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) { 668 buf[len] = 0; 669 return 1; 670 } 671 log_crypto_err("could not SSL_read"); 672 return 0; 673 } 674 if(buf[len] == '\n') { 675 /* return string without \n */ 676 buf[len] = 0; 677 return 1; 678 } 679 len++; 680 } 681 buf[max-1] = 0; 682 log_err("control line too long (%d): %s", (int)max, buf); 683 return 0; 684 } 685 686 /** skip whitespace, return new pointer into string */ 687 static char* 688 skipwhite(char* str) 689 { 690 /* EOS \0 is not a space */ 691 while( isspace((unsigned char)*str) ) 692 str++; 693 return str; 694 } 695 696 /** send the OK to the control client */ 697 static void send_ok(SSL* ssl) 698 { 699 (void)ssl_printf(ssl, "ok\n"); 700 } 701 702 /** do the stop command */ 703 static void 704 do_stop(SSL* ssl, struct daemon_remote* rc) 705 { 706 rc->worker->need_to_exit = 1; 707 comm_base_exit(rc->worker->base); 708 send_ok(ssl); 709 } 710 711 /** do the reload command */ 712 static void 713 do_reload(SSL* ssl, struct daemon_remote* rc) 714 { 715 rc->worker->need_to_exit = 0; 716 comm_base_exit(rc->worker->base); 717 send_ok(ssl); 718 } 719 720 /** do the verbosity command */ 721 static void 722 do_verbosity(SSL* ssl, char* str) 723 { 724 int val = atoi(str); 725 if(val == 0 && strcmp(str, "0") != 0) { 726 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str); 727 return; 728 } 729 verbosity = val; 730 send_ok(ssl); 731 } 732 733 /** print stats from statinfo */ 734 static int 735 print_stats(SSL* ssl, const char* nm, struct ub_stats_info* s) 736 { 737 struct timeval sumwait, avg; 738 if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm, 739 (unsigned long)s->svr.num_queries)) return 0; 740 if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm, 741 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0; 742 if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm, 743 (unsigned long)(s->svr.num_queries 744 - s->svr.num_queries_missed_cache))) return 0; 745 if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm, 746 (unsigned long)s->svr.num_queries_missed_cache)) return 0; 747 if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm, 748 (unsigned long)s->svr.num_queries_prefetch)) return 0; 749 if(!ssl_printf(ssl, "%s.num.zero_ttl"SQ"%lu\n", nm, 750 (unsigned long)s->svr.zero_ttl_responses)) return 0; 751 if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm, 752 (unsigned long)s->mesh_replies_sent)) return 0; 753 #ifdef USE_DNSCRYPT 754 if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm, 755 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0; 756 if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm, 757 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0; 758 if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm, 759 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0; 760 if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm, 761 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0; 762 #endif 763 if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm, 764 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)? 765 (double)s->svr.sum_query_list_size/ 766 (double)(s->svr.num_queries_missed_cache+ 767 s->svr.num_queries_prefetch) : 0.0)) return 0; 768 if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm, 769 (unsigned long)s->svr.max_query_list_size)) return 0; 770 if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm, 771 (unsigned long)s->mesh_jostled)) return 0; 772 if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm, 773 (unsigned long)s->mesh_dropped)) return 0; 774 if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm, 775 (unsigned long)s->mesh_num_states)) return 0; 776 if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm, 777 (unsigned long)s->mesh_num_reply_states)) return 0; 778 #ifndef S_SPLINT_S 779 sumwait.tv_sec = s->mesh_replies_sum_wait_sec; 780 sumwait.tv_usec = s->mesh_replies_sum_wait_usec; 781 #endif 782 timeval_divide(&avg, &sumwait, s->mesh_replies_sent); 783 if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm, 784 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0; 785 if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm, 786 s->mesh_time_median)) return 0; 787 if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm, 788 (unsigned long)s->svr.tcp_accept_usage)) return 0; 789 return 1; 790 } 791 792 /** print stats for one thread */ 793 static int 794 print_thread_stats(SSL* ssl, int i, struct ub_stats_info* s) 795 { 796 char nm[32]; 797 snprintf(nm, sizeof(nm), "thread%d", i); 798 nm[sizeof(nm)-1]=0; 799 return print_stats(ssl, nm, s); 800 } 801 802 /** print long number */ 803 static int 804 print_longnum(SSL* ssl, const char* desc, size_t x) 805 { 806 if(x > 1024*1024*1024) { 807 /* more than a Gb */ 808 size_t front = x / (size_t)1000000; 809 size_t back = x % (size_t)1000000; 810 return ssl_printf(ssl, "%s%u%6.6u\n", desc, 811 (unsigned)front, (unsigned)back); 812 } else { 813 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x); 814 } 815 } 816 817 /** print mem stats */ 818 static int 819 print_mem(SSL* ssl, struct worker* worker, struct daemon* daemon) 820 { 821 size_t msg, rrset, val, iter, respip; 822 #ifdef CLIENT_SUBNET 823 size_t subnet = 0; 824 #endif /* CLIENT_SUBNET */ 825 #ifdef USE_IPSECMOD 826 size_t ipsecmod = 0; 827 #endif /* USE_IPSECMOD */ 828 #ifdef USE_DNSCRYPT 829 size_t dnscrypt_shared_secret = 0; 830 size_t dnscrypt_nonce = 0; 831 #endif /* USE_DNSCRYPT */ 832 msg = slabhash_get_mem(daemon->env->msg_cache); 833 rrset = slabhash_get_mem(&daemon->env->rrset_cache->table); 834 val = mod_get_mem(&worker->env, "validator"); 835 iter = mod_get_mem(&worker->env, "iterator"); 836 respip = mod_get_mem(&worker->env, "respip"); 837 #ifdef CLIENT_SUBNET 838 subnet = mod_get_mem(&worker->env, "subnet"); 839 #endif /* CLIENT_SUBNET */ 840 #ifdef USE_IPSECMOD 841 ipsecmod = mod_get_mem(&worker->env, "ipsecmod"); 842 #endif /* USE_IPSECMOD */ 843 #ifdef USE_DNSCRYPT 844 if(daemon->dnscenv) { 845 dnscrypt_shared_secret = slabhash_get_mem( 846 daemon->dnscenv->shared_secrets_cache); 847 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache); 848 } 849 #endif /* USE_DNSCRYPT */ 850 851 if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset)) 852 return 0; 853 if(!print_longnum(ssl, "mem.cache.message"SQ, msg)) 854 return 0; 855 if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter)) 856 return 0; 857 if(!print_longnum(ssl, "mem.mod.validator"SQ, val)) 858 return 0; 859 if(!print_longnum(ssl, "mem.mod.respip"SQ, respip)) 860 return 0; 861 #ifdef CLIENT_SUBNET 862 if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet)) 863 return 0; 864 #endif /* CLIENT_SUBNET */ 865 #ifdef USE_IPSECMOD 866 if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod)) 867 return 0; 868 #endif /* USE_IPSECMOD */ 869 #ifdef USE_DNSCRYPT 870 if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ, 871 dnscrypt_shared_secret)) 872 return 0; 873 if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ, 874 dnscrypt_nonce)) 875 return 0; 876 #endif /* USE_DNSCRYPT */ 877 return 1; 878 } 879 880 /** print uptime stats */ 881 static int 882 print_uptime(SSL* ssl, struct worker* worker, int reset) 883 { 884 struct timeval now = *worker->env.now_tv; 885 struct timeval up, dt; 886 timeval_subtract(&up, &now, &worker->daemon->time_boot); 887 timeval_subtract(&dt, &now, &worker->daemon->time_last_stat); 888 if(reset) 889 worker->daemon->time_last_stat = now; 890 if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n", 891 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0; 892 if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n", 893 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0; 894 if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n", 895 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0; 896 return 1; 897 } 898 899 /** print extended histogram */ 900 static int 901 print_hist(SSL* ssl, struct ub_stats_info* s) 902 { 903 struct timehist* hist; 904 size_t i; 905 hist = timehist_setup(); 906 if(!hist) { 907 log_err("out of memory"); 908 return 0; 909 } 910 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST); 911 for(i=0; i<hist->num; i++) { 912 if(!ssl_printf(ssl, 913 "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n", 914 (int)hist->buckets[i].lower.tv_sec, 915 (int)hist->buckets[i].lower.tv_usec, 916 (int)hist->buckets[i].upper.tv_sec, 917 (int)hist->buckets[i].upper.tv_usec, 918 (unsigned long)hist->buckets[i].count)) { 919 timehist_delete(hist); 920 return 0; 921 } 922 } 923 timehist_delete(hist); 924 return 1; 925 } 926 927 /** print extended stats */ 928 static int 929 print_ext(SSL* ssl, struct ub_stats_info* s) 930 { 931 int i; 932 char nm[16]; 933 const sldns_rr_descriptor* desc; 934 const sldns_lookup_table* lt; 935 /* TYPE */ 936 for(i=0; i<UB_STATS_QTYPE_NUM; i++) { 937 if(inhibit_zero && s->svr.qtype[i] == 0) 938 continue; 939 desc = sldns_rr_descript((uint16_t)i); 940 if(desc && desc->_name) { 941 snprintf(nm, sizeof(nm), "%s", desc->_name); 942 } else if (i == LDNS_RR_TYPE_IXFR) { 943 snprintf(nm, sizeof(nm), "IXFR"); 944 } else if (i == LDNS_RR_TYPE_AXFR) { 945 snprintf(nm, sizeof(nm), "AXFR"); 946 } else if (i == LDNS_RR_TYPE_MAILA) { 947 snprintf(nm, sizeof(nm), "MAILA"); 948 } else if (i == LDNS_RR_TYPE_MAILB) { 949 snprintf(nm, sizeof(nm), "MAILB"); 950 } else if (i == LDNS_RR_TYPE_ANY) { 951 snprintf(nm, sizeof(nm), "ANY"); 952 } else { 953 snprintf(nm, sizeof(nm), "TYPE%d", i); 954 } 955 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n", 956 nm, (unsigned long)s->svr.qtype[i])) return 0; 957 } 958 if(!inhibit_zero || s->svr.qtype_big) { 959 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n", 960 (unsigned long)s->svr.qtype_big)) return 0; 961 } 962 /* CLASS */ 963 for(i=0; i<UB_STATS_QCLASS_NUM; i++) { 964 if(inhibit_zero && s->svr.qclass[i] == 0) 965 continue; 966 lt = sldns_lookup_by_id(sldns_rr_classes, i); 967 if(lt && lt->name) { 968 snprintf(nm, sizeof(nm), "%s", lt->name); 969 } else { 970 snprintf(nm, sizeof(nm), "CLASS%d", i); 971 } 972 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n", 973 nm, (unsigned long)s->svr.qclass[i])) return 0; 974 } 975 if(!inhibit_zero || s->svr.qclass_big) { 976 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n", 977 (unsigned long)s->svr.qclass_big)) return 0; 978 } 979 /* OPCODE */ 980 for(i=0; i<UB_STATS_OPCODE_NUM; i++) { 981 if(inhibit_zero && s->svr.qopcode[i] == 0) 982 continue; 983 lt = sldns_lookup_by_id(sldns_opcodes, i); 984 if(lt && lt->name) { 985 snprintf(nm, sizeof(nm), "%s", lt->name); 986 } else { 987 snprintf(nm, sizeof(nm), "OPCODE%d", i); 988 } 989 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n", 990 nm, (unsigned long)s->svr.qopcode[i])) return 0; 991 } 992 /* transport */ 993 if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n", 994 (unsigned long)s->svr.qtcp)) return 0; 995 if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n", 996 (unsigned long)s->svr.qtcp_outgoing)) return 0; 997 if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n", 998 (unsigned long)s->svr.qipv6)) return 0; 999 /* flags */ 1000 if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n", 1001 (unsigned long)s->svr.qbit_QR)) return 0; 1002 if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n", 1003 (unsigned long)s->svr.qbit_AA)) return 0; 1004 if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n", 1005 (unsigned long)s->svr.qbit_TC)) return 0; 1006 if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n", 1007 (unsigned long)s->svr.qbit_RD)) return 0; 1008 if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n", 1009 (unsigned long)s->svr.qbit_RA)) return 0; 1010 if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n", 1011 (unsigned long)s->svr.qbit_Z)) return 0; 1012 if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n", 1013 (unsigned long)s->svr.qbit_AD)) return 0; 1014 if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n", 1015 (unsigned long)s->svr.qbit_CD)) return 0; 1016 if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n", 1017 (unsigned long)s->svr.qEDNS)) return 0; 1018 if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n", 1019 (unsigned long)s->svr.qEDNS_DO)) return 0; 1020 1021 /* RCODE */ 1022 for(i=0; i<UB_STATS_RCODE_NUM; i++) { 1023 /* Always include RCODEs 0-5 */ 1024 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0) 1025 continue; 1026 lt = sldns_lookup_by_id(sldns_rcodes, i); 1027 if(lt && lt->name) { 1028 snprintf(nm, sizeof(nm), "%s", lt->name); 1029 } else { 1030 snprintf(nm, sizeof(nm), "RCODE%d", i); 1031 } 1032 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n", 1033 nm, (unsigned long)s->svr.ans_rcode[i])) return 0; 1034 } 1035 if(!inhibit_zero || s->svr.ans_rcode_nodata) { 1036 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n", 1037 (unsigned long)s->svr.ans_rcode_nodata)) return 0; 1038 } 1039 /* iteration */ 1040 if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n", 1041 (unsigned long)s->svr.queries_ratelimited)) return 0; 1042 /* validation */ 1043 if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n", 1044 (unsigned long)s->svr.ans_secure)) return 0; 1045 if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n", 1046 (unsigned long)s->svr.ans_bogus)) return 0; 1047 if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n", 1048 (unsigned long)s->svr.rrset_bogus)) return 0; 1049 /* threat detection */ 1050 if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n", 1051 (unsigned long)s->svr.unwanted_queries)) return 0; 1052 if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n", 1053 (unsigned long)s->svr.unwanted_replies)) return 0; 1054 /* cache counts */ 1055 if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n", 1056 (unsigned)s->svr.msg_cache_count)) return 0; 1057 if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n", 1058 (unsigned)s->svr.rrset_cache_count)) return 0; 1059 if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n", 1060 (unsigned)s->svr.infra_cache_count)) return 0; 1061 if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n", 1062 (unsigned)s->svr.key_cache_count)) return 0; 1063 #ifdef USE_DNSCRYPT 1064 if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n", 1065 (unsigned)s->svr.shared_secret_cache_count)) return 0; 1066 if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n", 1067 (unsigned)s->svr.nonce_cache_count)) return 0; 1068 if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n", 1069 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0; 1070 if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n", 1071 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0; 1072 #endif /* USE_DNSCRYPT */ 1073 return 1; 1074 } 1075 1076 /** do the stats command */ 1077 static void 1078 do_stats(SSL* ssl, struct daemon_remote* rc, int reset) 1079 { 1080 struct daemon* daemon = rc->worker->daemon; 1081 struct ub_stats_info total; 1082 struct ub_stats_info s; 1083 int i; 1084 log_assert(daemon->num > 0); 1085 /* gather all thread statistics in one place */ 1086 for(i=0; i<daemon->num; i++) { 1087 server_stats_obtain(rc->worker, daemon->workers[i], &s, reset); 1088 if(!print_thread_stats(ssl, i, &s)) 1089 return; 1090 if(i == 0) 1091 total = s; 1092 else server_stats_add(&total, &s); 1093 } 1094 /* print the thread statistics */ 1095 total.mesh_time_median /= (double)daemon->num; 1096 if(!print_stats(ssl, "total", &total)) 1097 return; 1098 if(!print_uptime(ssl, rc->worker, reset)) 1099 return; 1100 if(daemon->cfg->stat_extended) { 1101 if(!print_mem(ssl, rc->worker, daemon)) 1102 return; 1103 if(!print_hist(ssl, &total)) 1104 return; 1105 if(!print_ext(ssl, &total)) 1106 return; 1107 } 1108 } 1109 1110 /** parse commandline argument domain name */ 1111 static int 1112 parse_arg_name(SSL* ssl, char* str, uint8_t** res, size_t* len, int* labs) 1113 { 1114 uint8_t nm[LDNS_MAX_DOMAINLEN+1]; 1115 size_t nmlen = sizeof(nm); 1116 int status; 1117 *res = NULL; 1118 *len = 0; 1119 *labs = 0; 1120 status = sldns_str2wire_dname_buf(str, nm, &nmlen); 1121 if(status != 0) { 1122 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str, 1123 LDNS_WIREPARSE_OFFSET(status), 1124 sldns_get_errorstr_parse(status)); 1125 return 0; 1126 } 1127 *res = memdup(nm, nmlen); 1128 if(!*res) { 1129 ssl_printf(ssl, "error out of memory\n"); 1130 return 0; 1131 } 1132 *labs = dname_count_size_labels(*res, len); 1133 return 1; 1134 } 1135 1136 /** find second argument, modifies string */ 1137 static int 1138 find_arg2(SSL* ssl, char* arg, char** arg2) 1139 { 1140 char* as = strchr(arg, ' '); 1141 char* at = strchr(arg, '\t'); 1142 if(as && at) { 1143 if(at < as) 1144 as = at; 1145 as[0]=0; 1146 *arg2 = skipwhite(as+1); 1147 } else if(as) { 1148 as[0]=0; 1149 *arg2 = skipwhite(as+1); 1150 } else if(at) { 1151 at[0]=0; 1152 *arg2 = skipwhite(at+1); 1153 } else { 1154 ssl_printf(ssl, "error could not find next argument " 1155 "after %s\n", arg); 1156 return 0; 1157 } 1158 return 1; 1159 } 1160 1161 /** Add a new zone */ 1162 static int 1163 perform_zone_add(SSL* ssl, struct local_zones* zones, char* arg) 1164 { 1165 uint8_t* nm; 1166 int nmlabs; 1167 size_t nmlen; 1168 char* arg2; 1169 enum localzone_type t; 1170 struct local_zone* z; 1171 if(!find_arg2(ssl, arg, &arg2)) 1172 return 0; 1173 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1174 return 0; 1175 if(!local_zone_str2type(arg2, &t)) { 1176 ssl_printf(ssl, "error not a zone type. %s\n", arg2); 1177 free(nm); 1178 return 0; 1179 } 1180 lock_rw_wrlock(&zones->lock); 1181 if((z=local_zones_find(zones, nm, nmlen, 1182 nmlabs, LDNS_RR_CLASS_IN))) { 1183 /* already present in tree */ 1184 lock_rw_wrlock(&z->lock); 1185 z->type = t; /* update type anyway */ 1186 lock_rw_unlock(&z->lock); 1187 free(nm); 1188 lock_rw_unlock(&zones->lock); 1189 return 1; 1190 } 1191 if(!local_zones_add_zone(zones, nm, nmlen, 1192 nmlabs, LDNS_RR_CLASS_IN, t)) { 1193 lock_rw_unlock(&zones->lock); 1194 ssl_printf(ssl, "error out of memory\n"); 1195 return 0; 1196 } 1197 lock_rw_unlock(&zones->lock); 1198 return 1; 1199 } 1200 1201 /** Do the local_zone command */ 1202 static void 1203 do_zone_add(SSL* ssl, struct local_zones* zones, char* arg) 1204 { 1205 if(!perform_zone_add(ssl, zones, arg)) 1206 return; 1207 send_ok(ssl); 1208 } 1209 1210 /** Do the local_zones command */ 1211 static void 1212 do_zones_add(SSL* ssl, struct local_zones* zones) 1213 { 1214 char buf[2048]; 1215 int num = 0; 1216 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1217 if(buf[0] == 0x04 && buf[1] == 0) 1218 break; /* end of transmission */ 1219 if(!perform_zone_add(ssl, zones, buf)) { 1220 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1221 return; 1222 } 1223 else 1224 num++; 1225 } 1226 (void)ssl_printf(ssl, "added %d zones\n", num); 1227 } 1228 1229 /** Remove a zone */ 1230 static int 1231 perform_zone_remove(SSL* ssl, struct local_zones* zones, char* arg) 1232 { 1233 uint8_t* nm; 1234 int nmlabs; 1235 size_t nmlen; 1236 struct local_zone* z; 1237 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1238 return 0; 1239 lock_rw_wrlock(&zones->lock); 1240 if((z=local_zones_find(zones, nm, nmlen, 1241 nmlabs, LDNS_RR_CLASS_IN))) { 1242 /* present in tree */ 1243 local_zones_del_zone(zones, z); 1244 } 1245 lock_rw_unlock(&zones->lock); 1246 free(nm); 1247 return 1; 1248 } 1249 1250 /** Do the local_zone_remove command */ 1251 static void 1252 do_zone_remove(SSL* ssl, struct local_zones* zones, char* arg) 1253 { 1254 if(!perform_zone_remove(ssl, zones, arg)) 1255 return; 1256 send_ok(ssl); 1257 } 1258 1259 /** Do the local_zones_remove command */ 1260 static void 1261 do_zones_remove(SSL* ssl, struct local_zones* zones) 1262 { 1263 char buf[2048]; 1264 int num = 0; 1265 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1266 if(buf[0] == 0x04 && buf[1] == 0) 1267 break; /* end of transmission */ 1268 if(!perform_zone_remove(ssl, zones, buf)) { 1269 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1270 return; 1271 } 1272 else 1273 num++; 1274 } 1275 (void)ssl_printf(ssl, "removed %d zones\n", num); 1276 } 1277 1278 /** Add new RR data */ 1279 static int 1280 perform_data_add(SSL* ssl, struct local_zones* zones, char* arg) 1281 { 1282 if(!local_zones_add_RR(zones, arg)) { 1283 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg); 1284 return 0; 1285 } 1286 return 1; 1287 } 1288 1289 /** Do the local_data command */ 1290 static void 1291 do_data_add(SSL* ssl, struct local_zones* zones, char* arg) 1292 { 1293 if(!perform_data_add(ssl, zones, arg)) 1294 return; 1295 send_ok(ssl); 1296 } 1297 1298 /** Do the local_datas command */ 1299 static void 1300 do_datas_add(SSL* ssl, struct local_zones* zones) 1301 { 1302 char buf[2048]; 1303 int num = 0; 1304 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1305 if(buf[0] == 0x04 && buf[1] == 0) 1306 break; /* end of transmission */ 1307 if(!perform_data_add(ssl, zones, buf)) { 1308 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1309 return; 1310 } 1311 else 1312 num++; 1313 } 1314 (void)ssl_printf(ssl, "added %d datas\n", num); 1315 } 1316 1317 /** Remove RR data */ 1318 static int 1319 perform_data_remove(SSL* ssl, struct local_zones* zones, char* arg) 1320 { 1321 uint8_t* nm; 1322 int nmlabs; 1323 size_t nmlen; 1324 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1325 return 0; 1326 local_zones_del_data(zones, nm, 1327 nmlen, nmlabs, LDNS_RR_CLASS_IN); 1328 free(nm); 1329 return 1; 1330 } 1331 1332 /** Do the local_data_remove command */ 1333 static void 1334 do_data_remove(SSL* ssl, struct local_zones* zones, char* arg) 1335 { 1336 if(!perform_data_remove(ssl, zones, arg)) 1337 return; 1338 send_ok(ssl); 1339 } 1340 1341 /** Do the local_datas_remove command */ 1342 static void 1343 do_datas_remove(SSL* ssl, struct local_zones* zones) 1344 { 1345 char buf[2048]; 1346 int num = 0; 1347 while(ssl_read_line(ssl, buf, sizeof(buf))) { 1348 if(buf[0] == 0x04 && buf[1] == 0) 1349 break; /* end of transmission */ 1350 if(!perform_data_remove(ssl, zones, buf)) { 1351 if(!ssl_printf(ssl, "error for input line: %s\n", buf)) 1352 return; 1353 } 1354 else 1355 num++; 1356 } 1357 (void)ssl_printf(ssl, "removed %d datas\n", num); 1358 } 1359 1360 /** Add a new zone to view */ 1361 static void 1362 do_view_zone_add(SSL* ssl, struct worker* worker, char* arg) 1363 { 1364 char* arg2; 1365 struct view* v; 1366 if(!find_arg2(ssl, arg, &arg2)) 1367 return; 1368 v = views_find_view(worker->daemon->views, 1369 arg, 1 /* get write lock*/); 1370 if(!v) { 1371 ssl_printf(ssl,"no view with name: %s\n", arg); 1372 return; 1373 } 1374 if(!v->local_zones) { 1375 if(!(v->local_zones = local_zones_create())){ 1376 lock_rw_unlock(&v->lock); 1377 ssl_printf(ssl,"error out of memory\n"); 1378 return; 1379 } 1380 if(!v->isfirst) { 1381 /* Global local-zone is not used for this view, 1382 * therefore add defaults to this view-specic 1383 * local-zone. */ 1384 struct config_file lz_cfg; 1385 memset(&lz_cfg, 0, sizeof(lz_cfg)); 1386 local_zone_enter_defaults(v->local_zones, &lz_cfg); 1387 } 1388 } 1389 do_zone_add(ssl, v->local_zones, arg2); 1390 lock_rw_unlock(&v->lock); 1391 } 1392 1393 /** Remove a zone from view */ 1394 static void 1395 do_view_zone_remove(SSL* ssl, struct worker* worker, char* arg) 1396 { 1397 char* arg2; 1398 struct view* v; 1399 if(!find_arg2(ssl, arg, &arg2)) 1400 return; 1401 v = views_find_view(worker->daemon->views, 1402 arg, 1 /* get write lock*/); 1403 if(!v) { 1404 ssl_printf(ssl,"no view with name: %s\n", arg); 1405 return; 1406 } 1407 if(!v->local_zones) { 1408 lock_rw_unlock(&v->lock); 1409 send_ok(ssl); 1410 return; 1411 } 1412 do_zone_remove(ssl, v->local_zones, arg2); 1413 lock_rw_unlock(&v->lock); 1414 } 1415 1416 /** Add new RR data to view */ 1417 static void 1418 do_view_data_add(SSL* ssl, struct worker* worker, char* arg) 1419 { 1420 char* arg2; 1421 struct view* v; 1422 if(!find_arg2(ssl, arg, &arg2)) 1423 return; 1424 v = views_find_view(worker->daemon->views, 1425 arg, 1 /* get write lock*/); 1426 if(!v) { 1427 ssl_printf(ssl,"no view with name: %s\n", arg); 1428 return; 1429 } 1430 if(!v->local_zones) { 1431 if(!(v->local_zones = local_zones_create())){ 1432 lock_rw_unlock(&v->lock); 1433 ssl_printf(ssl,"error out of memory\n"); 1434 return; 1435 } 1436 } 1437 do_data_add(ssl, v->local_zones, arg2); 1438 lock_rw_unlock(&v->lock); 1439 } 1440 1441 /** Remove RR data from view */ 1442 static void 1443 do_view_data_remove(SSL* ssl, struct worker* worker, char* arg) 1444 { 1445 char* arg2; 1446 struct view* v; 1447 if(!find_arg2(ssl, arg, &arg2)) 1448 return; 1449 v = views_find_view(worker->daemon->views, 1450 arg, 1 /* get write lock*/); 1451 if(!v) { 1452 ssl_printf(ssl,"no view with name: %s\n", arg); 1453 return; 1454 } 1455 if(!v->local_zones) { 1456 lock_rw_unlock(&v->lock); 1457 send_ok(ssl); 1458 return; 1459 } 1460 do_data_remove(ssl, v->local_zones, arg2); 1461 lock_rw_unlock(&v->lock); 1462 } 1463 1464 /** cache lookup of nameservers */ 1465 static void 1466 do_lookup(SSL* ssl, struct worker* worker, char* arg) 1467 { 1468 uint8_t* nm; 1469 int nmlabs; 1470 size_t nmlen; 1471 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1472 return; 1473 (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs); 1474 free(nm); 1475 } 1476 1477 /** flush something from rrset and msg caches */ 1478 static void 1479 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen, 1480 uint16_t t, uint16_t c) 1481 { 1482 hashvalue_type h; 1483 struct query_info k; 1484 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0); 1485 if(t == LDNS_RR_TYPE_SOA) 1486 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 1487 PACKED_RRSET_SOA_NEG); 1488 k.qname = nm; 1489 k.qname_len = nmlen; 1490 k.qtype = t; 1491 k.qclass = c; 1492 k.local_alias = NULL; 1493 h = query_info_hash(&k, 0); 1494 slabhash_remove(worker->env.msg_cache, h, &k); 1495 if(t == LDNS_RR_TYPE_AAAA) { 1496 /* for AAAA also flush dns64 bit_cd packet */ 1497 h = query_info_hash(&k, BIT_CD); 1498 slabhash_remove(worker->env.msg_cache, h, &k); 1499 } 1500 } 1501 1502 /** flush a type */ 1503 static void 1504 do_flush_type(SSL* ssl, struct worker* worker, char* arg) 1505 { 1506 uint8_t* nm; 1507 int nmlabs; 1508 size_t nmlen; 1509 char* arg2; 1510 uint16_t t; 1511 if(!find_arg2(ssl, arg, &arg2)) 1512 return; 1513 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1514 return; 1515 t = sldns_get_rr_type_by_name(arg2); 1516 do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN); 1517 1518 free(nm); 1519 send_ok(ssl); 1520 } 1521 1522 /** flush statistics */ 1523 static void 1524 do_flush_stats(SSL* ssl, struct worker* worker) 1525 { 1526 worker_stats_clear(worker); 1527 send_ok(ssl); 1528 } 1529 1530 /** 1531 * Local info for deletion functions 1532 */ 1533 struct del_info { 1534 /** worker */ 1535 struct worker* worker; 1536 /** name to delete */ 1537 uint8_t* name; 1538 /** length */ 1539 size_t len; 1540 /** labels */ 1541 int labs; 1542 /** time to invalidate to */ 1543 time_t expired; 1544 /** number of rrsets removed */ 1545 size_t num_rrsets; 1546 /** number of msgs removed */ 1547 size_t num_msgs; 1548 /** number of key entries removed */ 1549 size_t num_keys; 1550 /** length of addr */ 1551 socklen_t addrlen; 1552 /** socket address for host deletion */ 1553 struct sockaddr_storage addr; 1554 }; 1555 1556 /** callback to delete hosts in infra cache */ 1557 static void 1558 infra_del_host(struct lruhash_entry* e, void* arg) 1559 { 1560 /* entry is locked */ 1561 struct del_info* inf = (struct del_info*)arg; 1562 struct infra_key* k = (struct infra_key*)e->key; 1563 if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) { 1564 struct infra_data* d = (struct infra_data*)e->data; 1565 d->probedelay = 0; 1566 d->timeout_A = 0; 1567 d->timeout_AAAA = 0; 1568 d->timeout_other = 0; 1569 rtt_init(&d->rtt); 1570 if(d->ttl > inf->expired) { 1571 d->ttl = inf->expired; 1572 inf->num_keys++; 1573 } 1574 } 1575 } 1576 1577 /** flush infra cache */ 1578 static void 1579 do_flush_infra(SSL* ssl, struct worker* worker, char* arg) 1580 { 1581 struct sockaddr_storage addr; 1582 socklen_t len; 1583 struct del_info inf; 1584 if(strcmp(arg, "all") == 0) { 1585 slabhash_clear(worker->env.infra_cache->hosts); 1586 send_ok(ssl); 1587 return; 1588 } 1589 if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) { 1590 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg); 1591 return; 1592 } 1593 /* delete all entries from cache */ 1594 /* what we do is to set them all expired */ 1595 inf.worker = worker; 1596 inf.name = 0; 1597 inf.len = 0; 1598 inf.labs = 0; 1599 inf.expired = *worker->env.now; 1600 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1601 inf.num_rrsets = 0; 1602 inf.num_msgs = 0; 1603 inf.num_keys = 0; 1604 inf.addrlen = len; 1605 memmove(&inf.addr, &addr, len); 1606 slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host, 1607 &inf); 1608 send_ok(ssl); 1609 } 1610 1611 /** flush requestlist */ 1612 static void 1613 do_flush_requestlist(SSL* ssl, struct worker* worker) 1614 { 1615 mesh_delete_all(worker->env.mesh); 1616 send_ok(ssl); 1617 } 1618 1619 /** callback to delete rrsets in a zone */ 1620 static void 1621 zone_del_rrset(struct lruhash_entry* e, void* arg) 1622 { 1623 /* entry is locked */ 1624 struct del_info* inf = (struct del_info*)arg; 1625 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key; 1626 if(dname_subdomain_c(k->rk.dname, inf->name)) { 1627 struct packed_rrset_data* d = 1628 (struct packed_rrset_data*)e->data; 1629 if(d->ttl > inf->expired) { 1630 d->ttl = inf->expired; 1631 inf->num_rrsets++; 1632 } 1633 } 1634 } 1635 1636 /** callback to delete messages in a zone */ 1637 static void 1638 zone_del_msg(struct lruhash_entry* e, void* arg) 1639 { 1640 /* entry is locked */ 1641 struct del_info* inf = (struct del_info*)arg; 1642 struct msgreply_entry* k = (struct msgreply_entry*)e->key; 1643 if(dname_subdomain_c(k->key.qname, inf->name)) { 1644 struct reply_info* d = (struct reply_info*)e->data; 1645 if(d->ttl > inf->expired) { 1646 d->ttl = inf->expired; 1647 inf->num_msgs++; 1648 } 1649 } 1650 } 1651 1652 /** callback to delete keys in zone */ 1653 static void 1654 zone_del_kcache(struct lruhash_entry* e, void* arg) 1655 { 1656 /* entry is locked */ 1657 struct del_info* inf = (struct del_info*)arg; 1658 struct key_entry_key* k = (struct key_entry_key*)e->key; 1659 if(dname_subdomain_c(k->name, inf->name)) { 1660 struct key_entry_data* d = (struct key_entry_data*)e->data; 1661 if(d->ttl > inf->expired) { 1662 d->ttl = inf->expired; 1663 inf->num_keys++; 1664 } 1665 } 1666 } 1667 1668 /** remove all rrsets and keys from zone from cache */ 1669 static void 1670 do_flush_zone(SSL* ssl, struct worker* worker, char* arg) 1671 { 1672 uint8_t* nm; 1673 int nmlabs; 1674 size_t nmlen; 1675 struct del_info inf; 1676 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1677 return; 1678 /* delete all RRs and key entries from zone */ 1679 /* what we do is to set them all expired */ 1680 inf.worker = worker; 1681 inf.name = nm; 1682 inf.len = nmlen; 1683 inf.labs = nmlabs; 1684 inf.expired = *worker->env.now; 1685 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1686 inf.num_rrsets = 0; 1687 inf.num_msgs = 0; 1688 inf.num_keys = 0; 1689 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1690 &zone_del_rrset, &inf); 1691 1692 slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf); 1693 1694 /* and validator cache */ 1695 if(worker->env.key_cache) { 1696 slabhash_traverse(worker->env.key_cache->slab, 1, 1697 &zone_del_kcache, &inf); 1698 } 1699 1700 free(nm); 1701 1702 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1703 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1704 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1705 } 1706 1707 /** callback to delete bogus rrsets */ 1708 static void 1709 bogus_del_rrset(struct lruhash_entry* e, void* arg) 1710 { 1711 /* entry is locked */ 1712 struct del_info* inf = (struct del_info*)arg; 1713 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data; 1714 if(d->security == sec_status_bogus) { 1715 d->ttl = inf->expired; 1716 inf->num_rrsets++; 1717 } 1718 } 1719 1720 /** callback to delete bogus messages */ 1721 static void 1722 bogus_del_msg(struct lruhash_entry* e, void* arg) 1723 { 1724 /* entry is locked */ 1725 struct del_info* inf = (struct del_info*)arg; 1726 struct reply_info* d = (struct reply_info*)e->data; 1727 if(d->security == sec_status_bogus) { 1728 d->ttl = inf->expired; 1729 inf->num_msgs++; 1730 } 1731 } 1732 1733 /** callback to delete bogus keys */ 1734 static void 1735 bogus_del_kcache(struct lruhash_entry* e, void* arg) 1736 { 1737 /* entry is locked */ 1738 struct del_info* inf = (struct del_info*)arg; 1739 struct key_entry_data* d = (struct key_entry_data*)e->data; 1740 if(d->isbad) { 1741 d->ttl = inf->expired; 1742 inf->num_keys++; 1743 } 1744 } 1745 1746 /** remove all bogus rrsets, msgs and keys from cache */ 1747 static void 1748 do_flush_bogus(SSL* ssl, struct worker* worker) 1749 { 1750 struct del_info inf; 1751 /* what we do is to set them all expired */ 1752 inf.worker = worker; 1753 inf.expired = *worker->env.now; 1754 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1755 inf.num_rrsets = 0; 1756 inf.num_msgs = 0; 1757 inf.num_keys = 0; 1758 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1759 &bogus_del_rrset, &inf); 1760 1761 slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf); 1762 1763 /* and validator cache */ 1764 if(worker->env.key_cache) { 1765 slabhash_traverse(worker->env.key_cache->slab, 1, 1766 &bogus_del_kcache, &inf); 1767 } 1768 1769 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1770 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1771 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1772 } 1773 1774 /** callback to delete negative and servfail rrsets */ 1775 static void 1776 negative_del_rrset(struct lruhash_entry* e, void* arg) 1777 { 1778 /* entry is locked */ 1779 struct del_info* inf = (struct del_info*)arg; 1780 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key; 1781 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data; 1782 /* delete the parentside negative cache rrsets, 1783 * these are nameserver rrsets that failed lookup, rdata empty */ 1784 if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 && 1785 d->rrsig_count == 0 && d->rr_len[0] == 0) { 1786 d->ttl = inf->expired; 1787 inf->num_rrsets++; 1788 } 1789 } 1790 1791 /** callback to delete negative and servfail messages */ 1792 static void 1793 negative_del_msg(struct lruhash_entry* e, void* arg) 1794 { 1795 /* entry is locked */ 1796 struct del_info* inf = (struct del_info*)arg; 1797 struct reply_info* d = (struct reply_info*)e->data; 1798 /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error 1799 * or NOERROR rcode with ANCOUNT==0: a NODATA answer */ 1800 if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) { 1801 d->ttl = inf->expired; 1802 inf->num_msgs++; 1803 } 1804 } 1805 1806 /** callback to delete negative key entries */ 1807 static void 1808 negative_del_kcache(struct lruhash_entry* e, void* arg) 1809 { 1810 /* entry is locked */ 1811 struct del_info* inf = (struct del_info*)arg; 1812 struct key_entry_data* d = (struct key_entry_data*)e->data; 1813 /* could be bad because of lookup failure on the DS, DNSKEY, which 1814 * was nxdomain or servfail, and thus a result of negative lookups */ 1815 if(d->isbad) { 1816 d->ttl = inf->expired; 1817 inf->num_keys++; 1818 } 1819 } 1820 1821 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */ 1822 static void 1823 do_flush_negative(SSL* ssl, struct worker* worker) 1824 { 1825 struct del_info inf; 1826 /* what we do is to set them all expired */ 1827 inf.worker = worker; 1828 inf.expired = *worker->env.now; 1829 inf.expired -= 3; /* handle 3 seconds skew between threads */ 1830 inf.num_rrsets = 0; 1831 inf.num_msgs = 0; 1832 inf.num_keys = 0; 1833 slabhash_traverse(&worker->env.rrset_cache->table, 1, 1834 &negative_del_rrset, &inf); 1835 1836 slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf); 1837 1838 /* and validator cache */ 1839 if(worker->env.key_cache) { 1840 slabhash_traverse(worker->env.key_cache->slab, 1, 1841 &negative_del_kcache, &inf); 1842 } 1843 1844 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages " 1845 "and %lu key entries\n", (unsigned long)inf.num_rrsets, 1846 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys); 1847 } 1848 1849 /** remove name rrset from cache */ 1850 static void 1851 do_flush_name(SSL* ssl, struct worker* w, char* arg) 1852 { 1853 uint8_t* nm; 1854 int nmlabs; 1855 size_t nmlen; 1856 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 1857 return; 1858 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN); 1859 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN); 1860 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN); 1861 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN); 1862 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN); 1863 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN); 1864 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN); 1865 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN); 1866 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN); 1867 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN); 1868 1869 free(nm); 1870 send_ok(ssl); 1871 } 1872 1873 /** printout a delegation point info */ 1874 static int 1875 ssl_print_name_dp(SSL* ssl, const char* str, uint8_t* nm, uint16_t dclass, 1876 struct delegpt* dp) 1877 { 1878 char buf[257]; 1879 struct delegpt_ns* ns; 1880 struct delegpt_addr* a; 1881 int f = 0; 1882 if(str) { /* print header for forward, stub */ 1883 char* c = sldns_wire2str_class(dclass); 1884 dname_str(nm, buf); 1885 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) { 1886 free(c); 1887 return 0; 1888 } 1889 free(c); 1890 } 1891 for(ns = dp->nslist; ns; ns = ns->next) { 1892 dname_str(ns->name, buf); 1893 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1894 return 0; 1895 f = 1; 1896 } 1897 for(a = dp->target_list; a; a = a->next_target) { 1898 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf)); 1899 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf)) 1900 return 0; 1901 f = 1; 1902 } 1903 return ssl_printf(ssl, "\n"); 1904 } 1905 1906 1907 /** print root forwards */ 1908 static int 1909 print_root_fwds(SSL* ssl, struct iter_forwards* fwds, uint8_t* root) 1910 { 1911 struct delegpt* dp; 1912 dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN); 1913 if(!dp) 1914 return ssl_printf(ssl, "off (using root hints)\n"); 1915 /* if dp is returned it must be the root */ 1916 log_assert(query_dname_compare(dp->name, root)==0); 1917 return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp); 1918 } 1919 1920 /** parse args into delegpt */ 1921 static struct delegpt* 1922 parse_delegpt(SSL* ssl, char* args, uint8_t* nm, int allow_names) 1923 { 1924 /* parse args and add in */ 1925 char* p = args; 1926 char* todo; 1927 struct delegpt* dp = delegpt_create_mlc(nm); 1928 struct sockaddr_storage addr; 1929 socklen_t addrlen; 1930 if(!dp) { 1931 (void)ssl_printf(ssl, "error out of memory\n"); 1932 return NULL; 1933 } 1934 while(p) { 1935 todo = p; 1936 p = strchr(p, ' '); /* find next spot, if any */ 1937 if(p) { 1938 *p++ = 0; /* end this spot */ 1939 p = skipwhite(p); /* position at next spot */ 1940 } 1941 /* parse address */ 1942 if(!extstrtoaddr(todo, &addr, &addrlen)) { 1943 if(allow_names) { 1944 uint8_t* n = NULL; 1945 size_t ln; 1946 int lb; 1947 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) { 1948 (void)ssl_printf(ssl, "error cannot " 1949 "parse IP address or name " 1950 "'%s'\n", todo); 1951 delegpt_free_mlc(dp); 1952 return NULL; 1953 } 1954 if(!delegpt_add_ns_mlc(dp, n, 0)) { 1955 (void)ssl_printf(ssl, "error out of memory\n"); 1956 free(n); 1957 delegpt_free_mlc(dp); 1958 return NULL; 1959 } 1960 free(n); 1961 1962 } else { 1963 (void)ssl_printf(ssl, "error cannot parse" 1964 " IP address '%s'\n", todo); 1965 delegpt_free_mlc(dp); 1966 return NULL; 1967 } 1968 } else { 1969 /* add address */ 1970 if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0)) { 1971 (void)ssl_printf(ssl, "error out of memory\n"); 1972 delegpt_free_mlc(dp); 1973 return NULL; 1974 } 1975 } 1976 } 1977 dp->has_parent_side_NS = 1; 1978 return dp; 1979 } 1980 1981 /** do the status command */ 1982 static void 1983 do_forward(SSL* ssl, struct worker* worker, char* args) 1984 { 1985 struct iter_forwards* fwd = worker->env.fwds; 1986 uint8_t* root = (uint8_t*)"\000"; 1987 if(!fwd) { 1988 (void)ssl_printf(ssl, "error: structure not allocated\n"); 1989 return; 1990 } 1991 if(args == NULL || args[0] == 0) { 1992 (void)print_root_fwds(ssl, fwd, root); 1993 return; 1994 } 1995 /* set root forwards for this thread. since we are in remote control 1996 * the actual mesh is not running, so we can freely edit it. */ 1997 /* delete all the existing queries first */ 1998 mesh_delete_all(worker->env.mesh); 1999 if(strcmp(args, "off") == 0) { 2000 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root); 2001 } else { 2002 struct delegpt* dp; 2003 if(!(dp = parse_delegpt(ssl, args, root, 0))) 2004 return; 2005 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 2006 (void)ssl_printf(ssl, "error out of memory\n"); 2007 return; 2008 } 2009 } 2010 send_ok(ssl); 2011 } 2012 2013 static int 2014 parse_fs_args(SSL* ssl, char* args, uint8_t** nm, struct delegpt** dp, 2015 int* insecure, int* prime) 2016 { 2017 char* zonename; 2018 char* rest; 2019 size_t nmlen; 2020 int nmlabs; 2021 /* parse all -x args */ 2022 while(args[0] == '+') { 2023 if(!find_arg2(ssl, args, &rest)) 2024 return 0; 2025 while(*(++args) != 0) { 2026 if(*args == 'i' && insecure) 2027 *insecure = 1; 2028 else if(*args == 'p' && prime) 2029 *prime = 1; 2030 else { 2031 (void)ssl_printf(ssl, "error: unknown option %s\n", args); 2032 return 0; 2033 } 2034 } 2035 args = rest; 2036 } 2037 /* parse name */ 2038 if(dp) { 2039 if(!find_arg2(ssl, args, &rest)) 2040 return 0; 2041 zonename = args; 2042 args = rest; 2043 } else zonename = args; 2044 if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs)) 2045 return 0; 2046 2047 /* parse dp */ 2048 if(dp) { 2049 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) { 2050 free(*nm); 2051 return 0; 2052 } 2053 } 2054 return 1; 2055 } 2056 2057 /** do the forward_add command */ 2058 static void 2059 do_forward_add(SSL* ssl, struct worker* worker, char* args) 2060 { 2061 struct iter_forwards* fwd = worker->env.fwds; 2062 int insecure = 0; 2063 uint8_t* nm = NULL; 2064 struct delegpt* dp = NULL; 2065 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL)) 2066 return; 2067 if(insecure && worker->env.anchors) { 2068 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2069 nm)) { 2070 (void)ssl_printf(ssl, "error out of memory\n"); 2071 delegpt_free_mlc(dp); 2072 free(nm); 2073 return; 2074 } 2075 } 2076 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) { 2077 (void)ssl_printf(ssl, "error out of memory\n"); 2078 free(nm); 2079 return; 2080 } 2081 free(nm); 2082 send_ok(ssl); 2083 } 2084 2085 /** do the forward_remove command */ 2086 static void 2087 do_forward_remove(SSL* ssl, struct worker* worker, char* args) 2088 { 2089 struct iter_forwards* fwd = worker->env.fwds; 2090 int insecure = 0; 2091 uint8_t* nm = NULL; 2092 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 2093 return; 2094 if(insecure && worker->env.anchors) 2095 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2096 nm); 2097 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm); 2098 free(nm); 2099 send_ok(ssl); 2100 } 2101 2102 /** do the stub_add command */ 2103 static void 2104 do_stub_add(SSL* ssl, struct worker* worker, char* args) 2105 { 2106 struct iter_forwards* fwd = worker->env.fwds; 2107 int insecure = 0, prime = 0; 2108 uint8_t* nm = NULL; 2109 struct delegpt* dp = NULL; 2110 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime)) 2111 return; 2112 if(insecure && worker->env.anchors) { 2113 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2114 nm)) { 2115 (void)ssl_printf(ssl, "error out of memory\n"); 2116 delegpt_free_mlc(dp); 2117 free(nm); 2118 return; 2119 } 2120 } 2121 if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) { 2122 if(insecure && worker->env.anchors) 2123 anchors_delete_insecure(worker->env.anchors, 2124 LDNS_RR_CLASS_IN, nm); 2125 (void)ssl_printf(ssl, "error out of memory\n"); 2126 delegpt_free_mlc(dp); 2127 free(nm); 2128 return; 2129 } 2130 if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) { 2131 (void)ssl_printf(ssl, "error out of memory\n"); 2132 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 2133 if(insecure && worker->env.anchors) 2134 anchors_delete_insecure(worker->env.anchors, 2135 LDNS_RR_CLASS_IN, nm); 2136 free(nm); 2137 return; 2138 } 2139 free(nm); 2140 send_ok(ssl); 2141 } 2142 2143 /** do the stub_remove command */ 2144 static void 2145 do_stub_remove(SSL* ssl, struct worker* worker, char* args) 2146 { 2147 struct iter_forwards* fwd = worker->env.fwds; 2148 int insecure = 0; 2149 uint8_t* nm = NULL; 2150 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL)) 2151 return; 2152 if(insecure && worker->env.anchors) 2153 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN, 2154 nm); 2155 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm); 2156 hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm); 2157 free(nm); 2158 send_ok(ssl); 2159 } 2160 2161 /** do the insecure_add command */ 2162 static void 2163 do_insecure_add(SSL* ssl, struct worker* worker, char* arg) 2164 { 2165 size_t nmlen; 2166 int nmlabs; 2167 uint8_t* nm = NULL; 2168 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2169 return; 2170 if(worker->env.anchors) { 2171 if(!anchors_add_insecure(worker->env.anchors, 2172 LDNS_RR_CLASS_IN, nm)) { 2173 (void)ssl_printf(ssl, "error out of memory\n"); 2174 free(nm); 2175 return; 2176 } 2177 } 2178 free(nm); 2179 send_ok(ssl); 2180 } 2181 2182 /** do the insecure_remove command */ 2183 static void 2184 do_insecure_remove(SSL* ssl, struct worker* worker, char* arg) 2185 { 2186 size_t nmlen; 2187 int nmlabs; 2188 uint8_t* nm = NULL; 2189 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs)) 2190 return; 2191 if(worker->env.anchors) 2192 anchors_delete_insecure(worker->env.anchors, 2193 LDNS_RR_CLASS_IN, nm); 2194 free(nm); 2195 send_ok(ssl); 2196 } 2197 2198 static void 2199 do_insecure_list(SSL* ssl, struct worker* worker) 2200 { 2201 char buf[257]; 2202 struct trust_anchor* a; 2203 if(worker->env.anchors) { 2204 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) { 2205 if(a->numDS == 0 && a->numDNSKEY == 0) { 2206 dname_str(a->name, buf); 2207 ssl_printf(ssl, "%s\n", buf); 2208 } 2209 } 2210 } 2211 } 2212 2213 /** do the status command */ 2214 static void 2215 do_status(SSL* ssl, struct worker* worker) 2216 { 2217 int i; 2218 time_t uptime; 2219 if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION)) 2220 return; 2221 if(!ssl_printf(ssl, "verbosity: %d\n", verbosity)) 2222 return; 2223 if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num)) 2224 return; 2225 if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num)) 2226 return; 2227 for(i=0; i<worker->daemon->mods.num; i++) { 2228 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name)) 2229 return; 2230 } 2231 if(!ssl_printf(ssl, " ]\n")) 2232 return; 2233 uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec; 2234 if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime)) 2235 return; 2236 if(!ssl_printf(ssl, "options:%s%s\n" , 2237 (worker->daemon->reuseport?" reuseport":""), 2238 (worker->daemon->rc->accept_list?" control(ssl)":""))) 2239 return; 2240 if(!ssl_printf(ssl, "unbound (pid %d) is running...\n", 2241 (int)getpid())) 2242 return; 2243 } 2244 2245 /** get age for the mesh state */ 2246 static void 2247 get_mesh_age(struct mesh_state* m, char* buf, size_t len, 2248 struct module_env* env) 2249 { 2250 if(m->reply_list) { 2251 struct timeval d; 2252 struct mesh_reply* r = m->reply_list; 2253 /* last reply is the oldest */ 2254 while(r && r->next) 2255 r = r->next; 2256 timeval_subtract(&d, env->now_tv, &r->start_time); 2257 snprintf(buf, len, ARG_LL "d.%6.6d", 2258 (long long)d.tv_sec, (int)d.tv_usec); 2259 } else { 2260 snprintf(buf, len, "-"); 2261 } 2262 } 2263 2264 /** get status of a mesh state */ 2265 static void 2266 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m, 2267 char* buf, size_t len) 2268 { 2269 enum module_ext_state s = m->s.ext_state[m->s.curmod]; 2270 const char *modname = mesh->mods.mod[m->s.curmod]->name; 2271 size_t l; 2272 if(strcmp(modname, "iterator") == 0 && s == module_wait_reply && 2273 m->s.minfo[m->s.curmod]) { 2274 /* break into iterator to find out who its waiting for */ 2275 struct iter_qstate* qstate = (struct iter_qstate*) 2276 m->s.minfo[m->s.curmod]; 2277 struct outbound_list* ol = &qstate->outlist; 2278 struct outbound_entry* e; 2279 snprintf(buf, len, "%s wait for", modname); 2280 l = strlen(buf); 2281 buf += l; len -= l; 2282 if(ol->first == NULL) 2283 snprintf(buf, len, " (empty_list)"); 2284 for(e = ol->first; e; e = e->next) { 2285 snprintf(buf, len, " "); 2286 l = strlen(buf); 2287 buf += l; len -= l; 2288 addr_to_str(&e->qsent->addr, e->qsent->addrlen, 2289 buf, len); 2290 l = strlen(buf); 2291 buf += l; len -= l; 2292 } 2293 } else if(s == module_wait_subquery) { 2294 /* look in subs from mesh state to see what */ 2295 char nm[257]; 2296 struct mesh_state_ref* sub; 2297 snprintf(buf, len, "%s wants", modname); 2298 l = strlen(buf); 2299 buf += l; len -= l; 2300 if(m->sub_set.count == 0) 2301 snprintf(buf, len, " (empty_list)"); 2302 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) { 2303 char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype); 2304 char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass); 2305 dname_str(sub->s->s.qinfo.qname, nm); 2306 snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"), 2307 (c?c:"CLASS??"), nm); 2308 l = strlen(buf); 2309 buf += l; len -= l; 2310 free(t); 2311 free(c); 2312 } 2313 } else { 2314 snprintf(buf, len, "%s is %s", modname, strextstate(s)); 2315 } 2316 } 2317 2318 /** do the dump_requestlist command */ 2319 static void 2320 do_dump_requestlist(SSL* ssl, struct worker* worker) 2321 { 2322 struct mesh_area* mesh; 2323 struct mesh_state* m; 2324 int num = 0; 2325 char buf[257]; 2326 char timebuf[32]; 2327 char statbuf[10240]; 2328 if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num)) 2329 return; 2330 if(!ssl_printf(ssl, "# type cl name seconds module status\n")) 2331 return; 2332 /* show worker mesh contents */ 2333 mesh = worker->env.mesh; 2334 if(!mesh) return; 2335 RBTREE_FOR(m, struct mesh_state*, &mesh->all) { 2336 char* t = sldns_wire2str_type(m->s.qinfo.qtype); 2337 char* c = sldns_wire2str_class(m->s.qinfo.qclass); 2338 dname_str(m->s.qinfo.qname, buf); 2339 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env); 2340 get_mesh_status(mesh, m, statbuf, sizeof(statbuf)); 2341 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n", 2342 num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf, 2343 statbuf)) { 2344 free(t); 2345 free(c); 2346 return; 2347 } 2348 num++; 2349 free(t); 2350 free(c); 2351 } 2352 } 2353 2354 /** structure for argument data for dump infra host */ 2355 struct infra_arg { 2356 /** the infra cache */ 2357 struct infra_cache* infra; 2358 /** the SSL connection */ 2359 SSL* ssl; 2360 /** the time now */ 2361 time_t now; 2362 /** ssl failure? stop writing and skip the rest. If the tcp 2363 * connection is broken, and writes fail, we then stop writing. */ 2364 int ssl_failed; 2365 }; 2366 2367 /** callback for every host element in the infra cache */ 2368 static void 2369 dump_infra_host(struct lruhash_entry* e, void* arg) 2370 { 2371 struct infra_arg* a = (struct infra_arg*)arg; 2372 struct infra_key* k = (struct infra_key*)e->key; 2373 struct infra_data* d = (struct infra_data*)e->data; 2374 char ip_str[1024]; 2375 char name[257]; 2376 int port; 2377 if(a->ssl_failed) 2378 return; 2379 addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str)); 2380 dname_str(k->zonename, name); 2381 port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port); 2382 if(port != UNBOUND_DNS_PORT) { 2383 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str), 2384 "@%d", port); 2385 } 2386 /* skip expired stuff (only backed off) */ 2387 if(d->ttl < a->now) { 2388 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) { 2389 if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str, 2390 name, d->rtt.rto)) { 2391 a->ssl_failed = 1; 2392 return; 2393 } 2394 } 2395 return; 2396 } 2397 if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d " 2398 "tA %d tAAAA %d tother %d " 2399 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d " 2400 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now), 2401 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto, 2402 d->timeout_A, d->timeout_AAAA, d->timeout_other, 2403 (int)d->edns_lame_known, (int)d->edns_version, 2404 (int)(a->now<d->probedelay?(d->probedelay - a->now):0), 2405 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A, 2406 (int)d->lame_other)) { 2407 a->ssl_failed = 1; 2408 return; 2409 } 2410 } 2411 2412 /** do the dump_infra command */ 2413 static void 2414 do_dump_infra(SSL* ssl, struct worker* worker) 2415 { 2416 struct infra_arg arg; 2417 arg.infra = worker->env.infra_cache; 2418 arg.ssl = ssl; 2419 arg.now = *worker->env.now; 2420 arg.ssl_failed = 0; 2421 slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg); 2422 } 2423 2424 /** do the log_reopen command */ 2425 static void 2426 do_log_reopen(SSL* ssl, struct worker* worker) 2427 { 2428 struct config_file* cfg = worker->env.cfg; 2429 send_ok(ssl); 2430 log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir); 2431 } 2432 2433 /** do the set_option command */ 2434 static void 2435 do_set_option(SSL* ssl, struct worker* worker, char* arg) 2436 { 2437 char* arg2; 2438 if(!find_arg2(ssl, arg, &arg2)) 2439 return; 2440 if(!config_set_option(worker->env.cfg, arg, arg2)) { 2441 (void)ssl_printf(ssl, "error setting option\n"); 2442 return; 2443 } 2444 /* effectuate some arguments */ 2445 if(strcmp(arg, "val-override-date:") == 0) { 2446 int m = modstack_find(&worker->env.mesh->mods, "validator"); 2447 struct val_env* val_env = NULL; 2448 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m]; 2449 if(val_env) 2450 val_env->date_override = worker->env.cfg->val_date_override; 2451 } 2452 send_ok(ssl); 2453 } 2454 2455 /* routine to printout option values over SSL */ 2456 void remote_get_opt_ssl(char* line, void* arg) 2457 { 2458 SSL* ssl = (SSL*)arg; 2459 (void)ssl_printf(ssl, "%s\n", line); 2460 } 2461 2462 /** do the get_option command */ 2463 static void 2464 do_get_option(SSL* ssl, struct worker* worker, char* arg) 2465 { 2466 int r; 2467 r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl); 2468 if(!r) { 2469 (void)ssl_printf(ssl, "error unknown option\n"); 2470 return; 2471 } 2472 } 2473 2474 /** do the list_forwards command */ 2475 static void 2476 do_list_forwards(SSL* ssl, struct worker* worker) 2477 { 2478 /* since its a per-worker structure no locks needed */ 2479 struct iter_forwards* fwds = worker->env.fwds; 2480 struct iter_forward_zone* z; 2481 struct trust_anchor* a; 2482 int insecure; 2483 RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) { 2484 if(!z->dp) continue; /* skip empty marker for stub */ 2485 2486 /* see if it is insecure */ 2487 insecure = 0; 2488 if(worker->env.anchors && 2489 (a=anchor_find(worker->env.anchors, z->name, 2490 z->namelabs, z->namelen, z->dclass))) { 2491 if(!a->keylist && !a->numDS && !a->numDNSKEY) 2492 insecure = 1; 2493 lock_basic_unlock(&a->lock); 2494 } 2495 2496 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"), 2497 z->name, z->dclass, z->dp)) 2498 return; 2499 } 2500 } 2501 2502 /** do the list_stubs command */ 2503 static void 2504 do_list_stubs(SSL* ssl, struct worker* worker) 2505 { 2506 struct iter_hints_stub* z; 2507 struct trust_anchor* a; 2508 int insecure; 2509 char str[32]; 2510 RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) { 2511 2512 /* see if it is insecure */ 2513 insecure = 0; 2514 if(worker->env.anchors && 2515 (a=anchor_find(worker->env.anchors, z->node.name, 2516 z->node.labs, z->node.len, z->node.dclass))) { 2517 if(!a->keylist && !a->numDS && !a->numDNSKEY) 2518 insecure = 1; 2519 lock_basic_unlock(&a->lock); 2520 } 2521 2522 snprintf(str, sizeof(str), "stub %sprime%s", 2523 (z->noprime?"no":""), (insecure?" +i":"")); 2524 if(!ssl_print_name_dp(ssl, str, z->node.name, 2525 z->node.dclass, z->dp)) 2526 return; 2527 } 2528 } 2529 2530 /** do the list_local_zones command */ 2531 static void 2532 do_list_local_zones(SSL* ssl, struct local_zones* zones) 2533 { 2534 struct local_zone* z; 2535 char buf[257]; 2536 lock_rw_rdlock(&zones->lock); 2537 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 2538 lock_rw_rdlock(&z->lock); 2539 dname_str(z->name, buf); 2540 if(!ssl_printf(ssl, "%s %s\n", buf, 2541 local_zone_type2str(z->type))) { 2542 /* failure to print */ 2543 lock_rw_unlock(&z->lock); 2544 lock_rw_unlock(&zones->lock); 2545 return; 2546 } 2547 lock_rw_unlock(&z->lock); 2548 } 2549 lock_rw_unlock(&zones->lock); 2550 } 2551 2552 /** do the list_local_data command */ 2553 static void 2554 do_list_local_data(SSL* ssl, struct worker* worker, struct local_zones* zones) 2555 { 2556 struct local_zone* z; 2557 struct local_data* d; 2558 struct local_rrset* p; 2559 char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer); 2560 size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer); 2561 lock_rw_rdlock(&zones->lock); 2562 RBTREE_FOR(z, struct local_zone*, &zones->ztree) { 2563 lock_rw_rdlock(&z->lock); 2564 RBTREE_FOR(d, struct local_data*, &z->data) { 2565 for(p = d->rrsets; p; p = p->next) { 2566 struct packed_rrset_data* d = 2567 (struct packed_rrset_data*)p->rrset->entry.data; 2568 size_t i; 2569 for(i=0; i<d->count + d->rrsig_count; i++) { 2570 if(!packed_rr_to_string(p->rrset, i, 2571 0, s, slen)) { 2572 if(!ssl_printf(ssl, "BADRR\n")) { 2573 lock_rw_unlock(&z->lock); 2574 lock_rw_unlock(&zones->lock); 2575 return; 2576 } 2577 } 2578 if(!ssl_printf(ssl, "%s\n", s)) { 2579 lock_rw_unlock(&z->lock); 2580 lock_rw_unlock(&zones->lock); 2581 return; 2582 } 2583 } 2584 } 2585 } 2586 lock_rw_unlock(&z->lock); 2587 } 2588 lock_rw_unlock(&zones->lock); 2589 } 2590 2591 /** do the view_list_local_zones command */ 2592 static void 2593 do_view_list_local_zones(SSL* ssl, struct worker* worker, char* arg) 2594 { 2595 struct view* v = views_find_view(worker->daemon->views, 2596 arg, 0 /* get read lock*/); 2597 if(!v) { 2598 ssl_printf(ssl,"no view with name: %s\n", arg); 2599 return; 2600 } 2601 if(v->local_zones) { 2602 do_list_local_zones(ssl, v->local_zones); 2603 } 2604 lock_rw_unlock(&v->lock); 2605 } 2606 2607 /** do the view_list_local_data command */ 2608 static void 2609 do_view_list_local_data(SSL* 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_data(ssl, worker, v->local_zones); 2619 } 2620 lock_rw_unlock(&v->lock); 2621 } 2622 2623 /** struct for user arg ratelimit list */ 2624 struct ratelimit_list_arg { 2625 /** the infra cache */ 2626 struct infra_cache* infra; 2627 /** the SSL to print to */ 2628 SSL* ssl; 2629 /** all or only ratelimited */ 2630 int all; 2631 /** current time */ 2632 time_t now; 2633 }; 2634 2635 #define ip_ratelimit_list_arg ratelimit_list_arg 2636 2637 /** list items in the ratelimit table */ 2638 static void 2639 rate_list(struct lruhash_entry* e, void* arg) 2640 { 2641 struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg; 2642 struct rate_key* k = (struct rate_key*)e->key; 2643 struct rate_data* d = (struct rate_data*)e->data; 2644 char buf[257]; 2645 int lim = infra_find_ratelimit(a->infra, k->name, k->namelen); 2646 int max = infra_rate_max(d, a->now); 2647 if(a->all == 0) { 2648 if(max < lim) 2649 return; 2650 } 2651 dname_str(k->name, buf); 2652 ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim); 2653 } 2654 2655 /** list items in the ip_ratelimit table */ 2656 static void 2657 ip_rate_list(struct lruhash_entry* e, void* arg) 2658 { 2659 char ip[128]; 2660 struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg; 2661 struct ip_rate_key* k = (struct ip_rate_key*)e->key; 2662 struct ip_rate_data* d = (struct ip_rate_data*)e->data; 2663 int lim = infra_ip_ratelimit; 2664 int max = infra_rate_max(d, a->now); 2665 if(a->all == 0) { 2666 if(max < lim) 2667 return; 2668 } 2669 addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip)); 2670 ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim); 2671 } 2672 2673 /** do the ratelimit_list command */ 2674 static void 2675 do_ratelimit_list(SSL* ssl, struct worker* worker, char* arg) 2676 { 2677 struct ratelimit_list_arg a; 2678 a.all = 0; 2679 a.infra = worker->env.infra_cache; 2680 a.now = *worker->env.now; 2681 a.ssl = ssl; 2682 arg = skipwhite(arg); 2683 if(strcmp(arg, "+a") == 0) 2684 a.all = 1; 2685 if(a.infra->domain_rates==NULL || 2686 (a.all == 0 && infra_dp_ratelimit == 0)) 2687 return; 2688 slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a); 2689 } 2690 2691 /** do the ip_ratelimit_list command */ 2692 static void 2693 do_ip_ratelimit_list(SSL* ssl, struct worker* worker, char* arg) 2694 { 2695 struct ip_ratelimit_list_arg a; 2696 a.all = 0; 2697 a.infra = worker->env.infra_cache; 2698 a.now = *worker->env.now; 2699 a.ssl = ssl; 2700 arg = skipwhite(arg); 2701 if(strcmp(arg, "+a") == 0) 2702 a.all = 1; 2703 if(a.infra->client_ip_rates==NULL || 2704 (a.all == 0 && infra_ip_ratelimit == 0)) 2705 return; 2706 slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a); 2707 } 2708 2709 /** tell other processes to execute the command */ 2710 static void 2711 distribute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd) 2712 { 2713 int i; 2714 if(!cmd || !ssl) 2715 return; 2716 /* skip i=0 which is me */ 2717 for(i=1; i<rc->worker->daemon->num; i++) { 2718 worker_send_cmd(rc->worker->daemon->workers[i], 2719 worker_cmd_remote); 2720 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd, 2721 (uint8_t*)cmd, strlen(cmd)+1, 0)) { 2722 ssl_printf(ssl, "error could not distribute cmd\n"); 2723 return; 2724 } 2725 } 2726 } 2727 2728 /** check for name with end-of-string, space or tab after it */ 2729 static int 2730 cmdcmp(char* p, const char* cmd, size_t len) 2731 { 2732 return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t'); 2733 } 2734 2735 /** execute a remote control command */ 2736 static void 2737 execute_cmd(struct daemon_remote* rc, SSL* ssl, char* cmd, 2738 struct worker* worker) 2739 { 2740 char* p = skipwhite(cmd); 2741 /* compare command */ 2742 if(cmdcmp(p, "stop", 4)) { 2743 do_stop(ssl, rc); 2744 return; 2745 } else if(cmdcmp(p, "reload", 6)) { 2746 do_reload(ssl, rc); 2747 return; 2748 } else if(cmdcmp(p, "stats_noreset", 13)) { 2749 do_stats(ssl, rc, 0); 2750 return; 2751 } else if(cmdcmp(p, "stats", 5)) { 2752 do_stats(ssl, rc, 1); 2753 return; 2754 } else if(cmdcmp(p, "status", 6)) { 2755 do_status(ssl, worker); 2756 return; 2757 } else if(cmdcmp(p, "dump_cache", 10)) { 2758 (void)dump_cache(ssl, worker); 2759 return; 2760 } else if(cmdcmp(p, "load_cache", 10)) { 2761 if(load_cache(ssl, worker)) send_ok(ssl); 2762 return; 2763 } else if(cmdcmp(p, "list_forwards", 13)) { 2764 do_list_forwards(ssl, worker); 2765 return; 2766 } else if(cmdcmp(p, "list_stubs", 10)) { 2767 do_list_stubs(ssl, worker); 2768 return; 2769 } else if(cmdcmp(p, "list_insecure", 13)) { 2770 do_insecure_list(ssl, worker); 2771 return; 2772 } else if(cmdcmp(p, "list_local_zones", 16)) { 2773 do_list_local_zones(ssl, worker->daemon->local_zones); 2774 return; 2775 } else if(cmdcmp(p, "list_local_data", 15)) { 2776 do_list_local_data(ssl, worker, worker->daemon->local_zones); 2777 return; 2778 } else if(cmdcmp(p, "view_list_local_zones", 21)) { 2779 do_view_list_local_zones(ssl, worker, skipwhite(p+21)); 2780 return; 2781 } else if(cmdcmp(p, "view_list_local_data", 20)) { 2782 do_view_list_local_data(ssl, worker, skipwhite(p+20)); 2783 return; 2784 } else if(cmdcmp(p, "ratelimit_list", 14)) { 2785 do_ratelimit_list(ssl, worker, p+14); 2786 return; 2787 } else if(cmdcmp(p, "ip_ratelimit_list", 17)) { 2788 do_ip_ratelimit_list(ssl, worker, p+17); 2789 return; 2790 } else if(cmdcmp(p, "stub_add", 8)) { 2791 /* must always distribute this cmd */ 2792 if(rc) distribute_cmd(rc, ssl, cmd); 2793 do_stub_add(ssl, worker, skipwhite(p+8)); 2794 return; 2795 } else if(cmdcmp(p, "stub_remove", 11)) { 2796 /* must always distribute this cmd */ 2797 if(rc) distribute_cmd(rc, ssl, cmd); 2798 do_stub_remove(ssl, worker, skipwhite(p+11)); 2799 return; 2800 } else if(cmdcmp(p, "forward_add", 11)) { 2801 /* must always distribute this cmd */ 2802 if(rc) distribute_cmd(rc, ssl, cmd); 2803 do_forward_add(ssl, worker, skipwhite(p+11)); 2804 return; 2805 } else if(cmdcmp(p, "forward_remove", 14)) { 2806 /* must always distribute this cmd */ 2807 if(rc) distribute_cmd(rc, ssl, cmd); 2808 do_forward_remove(ssl, worker, skipwhite(p+14)); 2809 return; 2810 } else if(cmdcmp(p, "insecure_add", 12)) { 2811 /* must always distribute this cmd */ 2812 if(rc) distribute_cmd(rc, ssl, cmd); 2813 do_insecure_add(ssl, worker, skipwhite(p+12)); 2814 return; 2815 } else if(cmdcmp(p, "insecure_remove", 15)) { 2816 /* must always distribute this cmd */ 2817 if(rc) distribute_cmd(rc, ssl, cmd); 2818 do_insecure_remove(ssl, worker, skipwhite(p+15)); 2819 return; 2820 } else if(cmdcmp(p, "forward", 7)) { 2821 /* must always distribute this cmd */ 2822 if(rc) distribute_cmd(rc, ssl, cmd); 2823 do_forward(ssl, worker, skipwhite(p+7)); 2824 return; 2825 } else if(cmdcmp(p, "flush_stats", 11)) { 2826 /* must always distribute this cmd */ 2827 if(rc) distribute_cmd(rc, ssl, cmd); 2828 do_flush_stats(ssl, worker); 2829 return; 2830 } else if(cmdcmp(p, "flush_requestlist", 17)) { 2831 /* must always distribute this cmd */ 2832 if(rc) distribute_cmd(rc, ssl, cmd); 2833 do_flush_requestlist(ssl, worker); 2834 return; 2835 } else if(cmdcmp(p, "lookup", 6)) { 2836 do_lookup(ssl, worker, skipwhite(p+6)); 2837 return; 2838 } 2839 2840 #ifdef THREADS_DISABLED 2841 /* other processes must execute the command as well */ 2842 /* commands that should not be distributed, returned above. */ 2843 if(rc) { /* only if this thread is the master (rc) thread */ 2844 /* done before the code below, which may split the string */ 2845 distribute_cmd(rc, ssl, cmd); 2846 } 2847 #endif 2848 if(cmdcmp(p, "verbosity", 9)) { 2849 do_verbosity(ssl, skipwhite(p+9)); 2850 } else if(cmdcmp(p, "local_zone_remove", 17)) { 2851 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17)); 2852 } else if(cmdcmp(p, "local_zones_remove", 18)) { 2853 do_zones_remove(ssl, worker->daemon->local_zones); 2854 } else if(cmdcmp(p, "local_zone", 10)) { 2855 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10)); 2856 } else if(cmdcmp(p, "local_zones", 11)) { 2857 do_zones_add(ssl, worker->daemon->local_zones); 2858 } else if(cmdcmp(p, "local_data_remove", 17)) { 2859 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17)); 2860 } else if(cmdcmp(p, "local_datas_remove", 18)) { 2861 do_datas_remove(ssl, worker->daemon->local_zones); 2862 } else if(cmdcmp(p, "local_data", 10)) { 2863 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10)); 2864 } else if(cmdcmp(p, "local_datas", 11)) { 2865 do_datas_add(ssl, worker->daemon->local_zones); 2866 } else if(cmdcmp(p, "view_local_zone_remove", 22)) { 2867 do_view_zone_remove(ssl, worker, skipwhite(p+22)); 2868 } else if(cmdcmp(p, "view_local_zone", 15)) { 2869 do_view_zone_add(ssl, worker, skipwhite(p+15)); 2870 } else if(cmdcmp(p, "view_local_data_remove", 22)) { 2871 do_view_data_remove(ssl, worker, skipwhite(p+22)); 2872 } else if(cmdcmp(p, "view_local_data", 15)) { 2873 do_view_data_add(ssl, worker, skipwhite(p+15)); 2874 } else if(cmdcmp(p, "flush_zone", 10)) { 2875 do_flush_zone(ssl, worker, skipwhite(p+10)); 2876 } else if(cmdcmp(p, "flush_type", 10)) { 2877 do_flush_type(ssl, worker, skipwhite(p+10)); 2878 } else if(cmdcmp(p, "flush_infra", 11)) { 2879 do_flush_infra(ssl, worker, skipwhite(p+11)); 2880 } else if(cmdcmp(p, "flush", 5)) { 2881 do_flush_name(ssl, worker, skipwhite(p+5)); 2882 } else if(cmdcmp(p, "dump_requestlist", 16)) { 2883 do_dump_requestlist(ssl, worker); 2884 } else if(cmdcmp(p, "dump_infra", 10)) { 2885 do_dump_infra(ssl, worker); 2886 } else if(cmdcmp(p, "log_reopen", 10)) { 2887 do_log_reopen(ssl, worker); 2888 } else if(cmdcmp(p, "set_option", 10)) { 2889 do_set_option(ssl, worker, skipwhite(p+10)); 2890 } else if(cmdcmp(p, "get_option", 10)) { 2891 do_get_option(ssl, worker, skipwhite(p+10)); 2892 } else if(cmdcmp(p, "flush_bogus", 11)) { 2893 do_flush_bogus(ssl, worker); 2894 } else if(cmdcmp(p, "flush_negative", 14)) { 2895 do_flush_negative(ssl, worker); 2896 } else { 2897 (void)ssl_printf(ssl, "error unknown command '%s'\n", p); 2898 } 2899 } 2900 2901 void 2902 daemon_remote_exec(struct worker* worker) 2903 { 2904 /* read the cmd string */ 2905 uint8_t* msg = NULL; 2906 uint32_t len = 0; 2907 if(!tube_read_msg(worker->cmd, &msg, &len, 0)) { 2908 log_err("daemon_remote_exec: tube_read_msg failed"); 2909 return; 2910 } 2911 verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg); 2912 execute_cmd(NULL, NULL, (char*)msg, worker); 2913 free(msg); 2914 } 2915 2916 /** handle remote control request */ 2917 static void 2918 handle_req(struct daemon_remote* rc, struct rc_state* s, SSL* ssl) 2919 { 2920 int r; 2921 char pre[10]; 2922 char magic[7]; 2923 char buf[1024]; 2924 #ifdef USE_WINSOCK 2925 /* makes it possible to set the socket blocking again. */ 2926 /* basically removes it from winsock_event ... */ 2927 WSAEventSelect(s->c->fd, NULL, 0); 2928 #endif 2929 fd_set_block(s->c->fd); 2930 2931 /* try to read magic UBCT[version]_space_ string */ 2932 ERR_clear_error(); 2933 if((r=SSL_read(ssl, magic, (int)sizeof(magic)-1)) <= 0) { 2934 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) 2935 return; 2936 log_crypto_err("could not SSL_read"); 2937 return; 2938 } 2939 magic[6] = 0; 2940 if( r != 6 || strncmp(magic, "UBCT", 4) != 0) { 2941 verbose(VERB_QUERY, "control connection has bad magic string"); 2942 /* probably wrong tool connected, ignore it completely */ 2943 return; 2944 } 2945 2946 /* read the command line */ 2947 if(!ssl_read_line(ssl, buf, sizeof(buf))) { 2948 return; 2949 } 2950 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION); 2951 if(strcmp(magic, pre) != 0) { 2952 verbose(VERB_QUERY, "control connection had bad " 2953 "version %s, cmd: %s", magic, buf); 2954 ssl_printf(ssl, "error version mismatch\n"); 2955 return; 2956 } 2957 verbose(VERB_DETAIL, "control cmd: %s", buf); 2958 2959 /* figure out what to do */ 2960 execute_cmd(rc, ssl, buf, rc->worker); 2961 } 2962 2963 int remote_control_callback(struct comm_point* c, void* arg, int err, 2964 struct comm_reply* ATTR_UNUSED(rep)) 2965 { 2966 struct rc_state* s = (struct rc_state*)arg; 2967 struct daemon_remote* rc = s->rc; 2968 int r; 2969 if(err != NETEVENT_NOERROR) { 2970 if(err==NETEVENT_TIMEOUT) 2971 log_err("remote control timed out"); 2972 clean_point(rc, s); 2973 return 0; 2974 } 2975 /* (continue to) setup the SSL connection */ 2976 ERR_clear_error(); 2977 r = SSL_do_handshake(s->ssl); 2978 if(r != 1) { 2979 int r2 = SSL_get_error(s->ssl, r); 2980 if(r2 == SSL_ERROR_WANT_READ) { 2981 if(s->shake_state == rc_hs_read) { 2982 /* try again later */ 2983 return 0; 2984 } 2985 s->shake_state = rc_hs_read; 2986 comm_point_listen_for_rw(c, 1, 0); 2987 return 0; 2988 } else if(r2 == SSL_ERROR_WANT_WRITE) { 2989 if(s->shake_state == rc_hs_write) { 2990 /* try again later */ 2991 return 0; 2992 } 2993 s->shake_state = rc_hs_write; 2994 comm_point_listen_for_rw(c, 0, 1); 2995 return 0; 2996 } else { 2997 if(r == 0) 2998 log_err("remote control connection closed prematurely"); 2999 log_addr(1, "failed connection from", 3000 &s->c->repinfo.addr, s->c->repinfo.addrlen); 3001 log_crypto_err("remote control failed ssl"); 3002 clean_point(rc, s); 3003 return 0; 3004 } 3005 } 3006 s->shake_state = rc_none; 3007 3008 /* once handshake has completed, check authentication */ 3009 if (!rc->use_cert) { 3010 verbose(VERB_ALGO, "unauthenticated remote control connection"); 3011 } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) { 3012 X509* x = SSL_get_peer_certificate(s->ssl); 3013 if(!x) { 3014 verbose(VERB_DETAIL, "remote control connection " 3015 "provided no client certificate"); 3016 clean_point(rc, s); 3017 return 0; 3018 } 3019 verbose(VERB_ALGO, "remote control connection authenticated"); 3020 X509_free(x); 3021 } else { 3022 verbose(VERB_DETAIL, "remote control connection failed to " 3023 "authenticate with client certificate"); 3024 clean_point(rc, s); 3025 return 0; 3026 } 3027 3028 /* if OK start to actually handle the request */ 3029 handle_req(rc, s, s->ssl); 3030 3031 verbose(VERB_ALGO, "remote control operation completed"); 3032 clean_point(rc, s); 3033 return 0; 3034 } 3035