1 /*
2 * daemon/remote.c - remote control for the unbound daemon.
3 *
4 * Copyright (c) 2008, NLnet Labs. All rights reserved.
5 *
6 * This software is open source.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 *
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 /**
37 * \file
38 *
39 * This file contains the remote control functionality for the daemon.
40 * The remote control can be performed using either the commandline
41 * unbound-control tool, or a TLS capable web browser.
42 * The channel is secured using TLSv1, and certificates.
43 * Both the server and the client(control tool) have their own keys.
44 */
45 #include "config.h"
46 #ifdef HAVE_OPENSSL_ERR_H
47 #include <openssl/err.h>
48 #endif
49 #ifdef HAVE_OPENSSL_DH_H
50 #include <openssl/dh.h>
51 #endif
52 #ifdef HAVE_OPENSSL_BN_H
53 #include <openssl/bn.h>
54 #endif
55
56 #include <ctype.h>
57 #include "daemon/remote.h"
58 #include "daemon/worker.h"
59 #include "daemon/daemon.h"
60 #include "daemon/stats.h"
61 #include "daemon/cachedump.h"
62 #include "util/log.h"
63 #include "util/config_file.h"
64 #include "util/net_help.h"
65 #include "util/module.h"
66 #include "services/listen_dnsport.h"
67 #include "services/cache/rrset.h"
68 #include "services/cache/infra.h"
69 #include "services/mesh.h"
70 #include "services/localzone.h"
71 #include "services/authzone.h"
72 #include "services/rpz.h"
73 #include "util/storage/slabhash.h"
74 #include "util/fptr_wlist.h"
75 #include "util/data/dname.h"
76 #include "validator/validator.h"
77 #include "validator/val_kcache.h"
78 #include "validator/val_kentry.h"
79 #include "validator/val_anchor.h"
80 #include "iterator/iterator.h"
81 #include "iterator/iter_fwd.h"
82 #include "iterator/iter_hints.h"
83 #include "iterator/iter_delegpt.h"
84 #include "services/outbound_list.h"
85 #include "services/outside_network.h"
86 #include "sldns/str2wire.h"
87 #include "sldns/parseutil.h"
88 #include "sldns/wire2str.h"
89 #include "sldns/sbuffer.h"
90
91 #ifdef HAVE_SYS_TYPES_H
92 # include <sys/types.h>
93 #endif
94 #ifdef HAVE_SYS_STAT_H
95 #include <sys/stat.h>
96 #endif
97 #ifdef HAVE_NETDB_H
98 #include <netdb.h>
99 #endif
100
101 /* just for portability */
102 #ifdef SQ
103 #undef SQ
104 #endif
105
106 /** what to put on statistics lines between var and value, ": " or "=" */
107 #define SQ "="
108 /** if true, inhibits a lot of =0 lines from the stats output */
109 static const int inhibit_zero = 1;
110
111 /** subtract timers and the values do not overflow or become negative */
112 static void
timeval_subtract(struct timeval * d,const struct timeval * end,const struct timeval * start)113 timeval_subtract(struct timeval* d, const struct timeval* end,
114 const struct timeval* start)
115 {
116 #ifndef S_SPLINT_S
117 time_t end_usec = end->tv_usec;
118 d->tv_sec = end->tv_sec - start->tv_sec;
119 if(end_usec < start->tv_usec) {
120 end_usec += 1000000;
121 d->tv_sec--;
122 }
123 d->tv_usec = end_usec - start->tv_usec;
124 #endif
125 }
126
127 /** divide sum of timers to get average */
128 static void
timeval_divide(struct timeval * avg,const struct timeval * sum,long long d)129 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d)
130 {
131 #ifndef S_SPLINT_S
132 size_t leftover;
133 if(d == 0) {
134 avg->tv_sec = 0;
135 avg->tv_usec = 0;
136 return;
137 }
138 avg->tv_sec = sum->tv_sec / d;
139 avg->tv_usec = sum->tv_usec / d;
140 /* handle fraction from seconds divide */
141 leftover = sum->tv_sec - avg->tv_sec*d;
142 avg->tv_usec += (leftover*1000000)/d;
143 #endif
144 }
145
146 static int
remote_setup_ctx(struct daemon_remote * rc,struct config_file * cfg)147 remote_setup_ctx(struct daemon_remote* rc, struct config_file* cfg)
148 {
149 char* s_cert;
150 char* s_key;
151 rc->ctx = SSL_CTX_new(SSLv23_server_method());
152 if(!rc->ctx) {
153 log_crypto_err("could not SSL_CTX_new");
154 return 0;
155 }
156 if(!listen_sslctx_setup(rc->ctx)) {
157 return 0;
158 }
159
160 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
161 s_key = fname_after_chroot(cfg->server_key_file, cfg, 1);
162 if(!s_cert || !s_key) {
163 log_err("out of memory in remote control fname");
164 goto setup_error;
165 }
166 verbose(VERB_ALGO, "setup SSL certificates");
167 if (!SSL_CTX_use_certificate_chain_file(rc->ctx,s_cert)) {
168 log_err("Error for server-cert-file: %s", s_cert);
169 log_crypto_err("Error in SSL_CTX use_certificate_chain_file");
170 goto setup_error;
171 }
172 if(!SSL_CTX_use_PrivateKey_file(rc->ctx,s_key,SSL_FILETYPE_PEM)) {
173 log_err("Error for server-key-file: %s", s_key);
174 log_crypto_err("Error in SSL_CTX use_PrivateKey_file");
175 goto setup_error;
176 }
177 if(!SSL_CTX_check_private_key(rc->ctx)) {
178 log_err("Error for server-key-file: %s", s_key);
179 log_crypto_err("Error in SSL_CTX check_private_key");
180 goto setup_error;
181 }
182 listen_sslctx_setup_2(rc->ctx);
183 if(!SSL_CTX_load_verify_locations(rc->ctx, s_cert, NULL)) {
184 log_crypto_err("Error setting up SSL_CTX verify locations");
185 setup_error:
186 free(s_cert);
187 free(s_key);
188 return 0;
189 }
190 SSL_CTX_set_client_CA_list(rc->ctx, SSL_load_client_CA_file(s_cert));
191 SSL_CTX_set_verify(rc->ctx, SSL_VERIFY_PEER, NULL);
192 free(s_cert);
193 free(s_key);
194 return 1;
195 }
196
197 struct daemon_remote*
daemon_remote_create(struct config_file * cfg)198 daemon_remote_create(struct config_file* cfg)
199 {
200 struct daemon_remote* rc = (struct daemon_remote*)calloc(1,
201 sizeof(*rc));
202 if(!rc) {
203 log_err("out of memory in daemon_remote_create");
204 return NULL;
205 }
206 rc->max_active = 10;
207
208 if(!cfg->remote_control_enable) {
209 rc->ctx = NULL;
210 return rc;
211 }
212 if(options_remote_is_address(cfg) && cfg->control_use_cert) {
213 if(!remote_setup_ctx(rc, cfg)) {
214 daemon_remote_delete(rc);
215 return NULL;
216 }
217 rc->use_cert = 1;
218 } else {
219 struct config_strlist* p;
220 rc->ctx = NULL;
221 rc->use_cert = 0;
222 if(!options_remote_is_address(cfg))
223 for(p = cfg->control_ifs.first; p; p = p->next) {
224 if(p->str && p->str[0] != '/')
225 log_warn("control-interface %s is not using TLS, but plain transfer, because first control-interface in config file is a local socket (starts with a /).", p->str);
226 }
227 }
228 return rc;
229 }
230
daemon_remote_clear(struct daemon_remote * rc)231 void daemon_remote_clear(struct daemon_remote* rc)
232 {
233 struct rc_state* p, *np;
234 if(!rc) return;
235 /* but do not close the ports */
236 listen_list_delete(rc->accept_list);
237 rc->accept_list = NULL;
238 /* do close these sockets */
239 p = rc->busy_list;
240 while(p) {
241 np = p->next;
242 if(p->ssl)
243 SSL_free(p->ssl);
244 comm_point_delete(p->c);
245 free(p);
246 p = np;
247 }
248 rc->busy_list = NULL;
249 rc->active = 0;
250 rc->worker = NULL;
251 }
252
daemon_remote_delete(struct daemon_remote * rc)253 void daemon_remote_delete(struct daemon_remote* rc)
254 {
255 if(!rc) return;
256 daemon_remote_clear(rc);
257 if(rc->ctx) {
258 SSL_CTX_free(rc->ctx);
259 }
260 free(rc);
261 }
262
263 /**
264 * Add and open a new control port
265 * @param ip: ip str
266 * @param nr: port nr
267 * @param list: list head
268 * @param noproto_is_err: if lack of protocol support is an error.
269 * @param cfg: config with username for chown of unix-sockets.
270 * @return false on failure.
271 */
272 static int
add_open(const char * ip,int nr,struct listen_port ** list,int noproto_is_err,struct config_file * cfg)273 add_open(const char* ip, int nr, struct listen_port** list, int noproto_is_err,
274 struct config_file* cfg)
275 {
276 struct addrinfo hints;
277 struct addrinfo* res;
278 struct listen_port* n;
279 int noproto = 0;
280 int fd, r;
281 char port[15];
282 snprintf(port, sizeof(port), "%d", nr);
283 port[sizeof(port)-1]=0;
284 memset(&hints, 0, sizeof(hints));
285 log_assert(ip);
286
287 if(ip[0] == '/') {
288 /* This looks like a local socket */
289 fd = create_local_accept_sock(ip, &noproto, cfg->use_systemd);
290 /*
291 * Change socket ownership and permissions so users other
292 * than root can access it provided they are in the same
293 * group as the user we run as.
294 */
295 if(fd != -1) {
296 #ifdef HAVE_CHOWN
297 if (cfg->username && cfg->username[0] &&
298 cfg_uid != (uid_t)-1) {
299 if(chown(ip, cfg_uid, cfg_gid) == -1)
300 verbose(VERB_QUERY, "cannot chown %u.%u %s: %s",
301 (unsigned)cfg_uid, (unsigned)cfg_gid,
302 ip, strerror(errno));
303 }
304 chmod(ip, (mode_t)(S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP));
305 #else
306 (void)cfg;
307 #endif
308 }
309 } else {
310 hints.ai_socktype = SOCK_STREAM;
311 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
312 if((r = getaddrinfo(ip, port, &hints, &res)) != 0 || !res) {
313 #ifdef USE_WINSOCK
314 if(!noproto_is_err && r == EAI_NONAME) {
315 /* tried to lookup the address as name */
316 return 1; /* return success, but do nothing */
317 }
318 #endif /* USE_WINSOCK */
319 log_err("control interface %s:%s getaddrinfo: %s %s",
320 ip?ip:"default", port, gai_strerror(r),
321 #ifdef EAI_SYSTEM
322 r==EAI_SYSTEM?(char*)strerror(errno):""
323 #else
324 ""
325 #endif
326 );
327 return 0;
328 }
329
330 /* open fd */
331 fd = create_tcp_accept_sock(res, 1, &noproto, 0,
332 cfg->ip_transparent, 0, cfg->ip_freebind, cfg->use_systemd);
333 freeaddrinfo(res);
334 }
335
336 if(fd == -1 && noproto) {
337 if(!noproto_is_err)
338 return 1; /* return success, but do nothing */
339 log_err("cannot open control interface %s %d : "
340 "protocol not supported", ip, nr);
341 return 0;
342 }
343 if(fd == -1) {
344 log_err("cannot open control interface %s %d", ip, nr);
345 return 0;
346 }
347
348 /* alloc */
349 n = (struct listen_port*)calloc(1, sizeof(*n));
350 if(!n) {
351 #ifndef USE_WINSOCK
352 close(fd);
353 #else
354 closesocket(fd);
355 #endif
356 log_err("out of memory");
357 return 0;
358 }
359 n->next = *list;
360 *list = n;
361 n->fd = fd;
362 return 1;
363 }
364
daemon_remote_open_ports(struct config_file * cfg)365 struct listen_port* daemon_remote_open_ports(struct config_file* cfg)
366 {
367 struct listen_port* l = NULL;
368 log_assert(cfg->remote_control_enable && cfg->control_port);
369 if(cfg->control_ifs.first) {
370 struct config_strlist* p;
371 for(p = cfg->control_ifs.first; p; p = p->next) {
372 if(!add_open(p->str, cfg->control_port, &l, 1, cfg)) {
373 listening_ports_free(l);
374 return NULL;
375 }
376 }
377 } else {
378 /* defaults */
379 if(cfg->do_ip6 &&
380 !add_open("::1", cfg->control_port, &l, 0, cfg)) {
381 listening_ports_free(l);
382 return NULL;
383 }
384 if(cfg->do_ip4 &&
385 !add_open("127.0.0.1", cfg->control_port, &l, 1, cfg)) {
386 listening_ports_free(l);
387 return NULL;
388 }
389 }
390 return l;
391 }
392
393 /** open accept commpoint */
394 static int
accept_open(struct daemon_remote * rc,int fd)395 accept_open(struct daemon_remote* rc, int fd)
396 {
397 struct listen_list* n = (struct listen_list*)malloc(sizeof(*n));
398 if(!n) {
399 log_err("out of memory");
400 return 0;
401 }
402 n->next = rc->accept_list;
403 rc->accept_list = n;
404 /* open commpt */
405 n->com = comm_point_create_raw(rc->worker->base, fd, 0,
406 &remote_accept_callback, rc);
407 if(!n->com)
408 return 0;
409 /* keep this port open, its fd is kept in the rc portlist */
410 n->com->do_not_close = 1;
411 return 1;
412 }
413
daemon_remote_open_accept(struct daemon_remote * rc,struct listen_port * ports,struct worker * worker)414 int daemon_remote_open_accept(struct daemon_remote* rc,
415 struct listen_port* ports, struct worker* worker)
416 {
417 struct listen_port* p;
418 rc->worker = worker;
419 for(p = ports; p; p = p->next) {
420 if(!accept_open(rc, p->fd)) {
421 log_err("could not create accept comm point");
422 return 0;
423 }
424 }
425 return 1;
426 }
427
daemon_remote_stop_accept(struct daemon_remote * rc)428 void daemon_remote_stop_accept(struct daemon_remote* rc)
429 {
430 struct listen_list* p;
431 for(p=rc->accept_list; p; p=p->next) {
432 comm_point_stop_listening(p->com);
433 }
434 }
435
daemon_remote_start_accept(struct daemon_remote * rc)436 void daemon_remote_start_accept(struct daemon_remote* rc)
437 {
438 struct listen_list* p;
439 for(p=rc->accept_list; p; p=p->next) {
440 comm_point_start_listening(p->com, -1, -1);
441 }
442 }
443
remote_accept_callback(struct comm_point * c,void * arg,int err,struct comm_reply * ATTR_UNUSED (rep))444 int remote_accept_callback(struct comm_point* c, void* arg, int err,
445 struct comm_reply* ATTR_UNUSED(rep))
446 {
447 struct daemon_remote* rc = (struct daemon_remote*)arg;
448 struct sockaddr_storage addr;
449 socklen_t addrlen;
450 int newfd;
451 struct rc_state* n;
452 if(err != NETEVENT_NOERROR) {
453 log_err("error %d on remote_accept_callback", err);
454 return 0;
455 }
456 /* perform the accept */
457 newfd = comm_point_perform_accept(c, &addr, &addrlen);
458 if(newfd == -1)
459 return 0;
460 /* create new commpoint unless we are servicing already */
461 if(rc->active >= rc->max_active) {
462 log_warn("drop incoming remote control: too many connections");
463 close_exit:
464 #ifndef USE_WINSOCK
465 close(newfd);
466 #else
467 closesocket(newfd);
468 #endif
469 return 0;
470 }
471
472 /* setup commpoint to service the remote control command */
473 n = (struct rc_state*)calloc(1, sizeof(*n));
474 if(!n) {
475 log_err("out of memory");
476 goto close_exit;
477 }
478 n->fd = newfd;
479 /* start in reading state */
480 n->c = comm_point_create_raw(rc->worker->base, newfd, 0,
481 &remote_control_callback, n);
482 if(!n->c) {
483 log_err("out of memory");
484 free(n);
485 goto close_exit;
486 }
487 log_addr(VERB_QUERY, "new control connection from", &addr, addrlen);
488 n->c->do_not_close = 0;
489 comm_point_stop_listening(n->c);
490 comm_point_start_listening(n->c, -1, REMOTE_CONTROL_TCP_TIMEOUT);
491 memcpy(&n->c->repinfo.addr, &addr, addrlen);
492 n->c->repinfo.addrlen = addrlen;
493 if(rc->use_cert) {
494 n->shake_state = rc_hs_read;
495 n->ssl = SSL_new(rc->ctx);
496 if(!n->ssl) {
497 log_crypto_err("could not SSL_new");
498 comm_point_delete(n->c);
499 free(n);
500 goto close_exit;
501 }
502 SSL_set_accept_state(n->ssl);
503 (void)SSL_set_mode(n->ssl, (long)SSL_MODE_AUTO_RETRY);
504 if(!SSL_set_fd(n->ssl, newfd)) {
505 log_crypto_err("could not SSL_set_fd");
506 SSL_free(n->ssl);
507 comm_point_delete(n->c);
508 free(n);
509 goto close_exit;
510 }
511 } else {
512 n->ssl = NULL;
513 }
514
515 n->rc = rc;
516 n->next = rc->busy_list;
517 rc->busy_list = n;
518 rc->active ++;
519
520 /* perform the first nonblocking read already, for windows,
521 * so it can return wouldblock. could be faster too. */
522 (void)remote_control_callback(n->c, n, NETEVENT_NOERROR, NULL);
523 return 0;
524 }
525
526 /** delete from list */
527 static void
state_list_remove_elem(struct rc_state ** list,struct comm_point * c)528 state_list_remove_elem(struct rc_state** list, struct comm_point* c)
529 {
530 while(*list) {
531 if( (*list)->c == c) {
532 *list = (*list)->next;
533 return;
534 }
535 list = &(*list)->next;
536 }
537 }
538
539 /** decrease active count and remove commpoint from busy list */
540 static void
clean_point(struct daemon_remote * rc,struct rc_state * s)541 clean_point(struct daemon_remote* rc, struct rc_state* s)
542 {
543 state_list_remove_elem(&rc->busy_list, s->c);
544 rc->active --;
545 if(s->ssl) {
546 SSL_shutdown(s->ssl);
547 SSL_free(s->ssl);
548 }
549 comm_point_delete(s->c);
550 free(s);
551 }
552
553 int
ssl_print_text(RES * res,const char * text)554 ssl_print_text(RES* res, const char* text)
555 {
556 int r;
557 if(!res)
558 return 0;
559 if(res->ssl) {
560 ERR_clear_error();
561 if((r=SSL_write(res->ssl, text, (int)strlen(text))) <= 0) {
562 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
563 verbose(VERB_QUERY, "warning, in SSL_write, peer "
564 "closed connection");
565 return 0;
566 }
567 log_crypto_err("could not SSL_write");
568 return 0;
569 }
570 } else {
571 size_t at = 0;
572 while(at < strlen(text)) {
573 ssize_t r = send(res->fd, text+at, strlen(text)-at, 0);
574 if(r == -1) {
575 if(errno == EAGAIN || errno == EINTR)
576 continue;
577 #ifndef USE_WINSOCK
578 log_err("could not send: %s", strerror(errno));
579 #else
580 log_err("could not send: %s", wsa_strerror(WSAGetLastError()));
581 #endif
582 return 0;
583 }
584 at += r;
585 }
586 }
587 return 1;
588 }
589
590 /** print text over the ssl connection */
591 static int
ssl_print_vmsg(RES * ssl,const char * format,va_list args)592 ssl_print_vmsg(RES* ssl, const char* format, va_list args)
593 {
594 char msg[1024];
595 vsnprintf(msg, sizeof(msg), format, args);
596 return ssl_print_text(ssl, msg);
597 }
598
599 /** printf style printing to the ssl connection */
ssl_printf(RES * ssl,const char * format,...)600 int ssl_printf(RES* ssl, const char* format, ...)
601 {
602 va_list args;
603 int ret;
604 va_start(args, format);
605 ret = ssl_print_vmsg(ssl, format, args);
606 va_end(args);
607 return ret;
608 }
609
610 int
ssl_read_line(RES * res,char * buf,size_t max)611 ssl_read_line(RES* res, char* buf, size_t max)
612 {
613 int r;
614 size_t len = 0;
615 if(!res)
616 return 0;
617 while(len < max) {
618 if(res->ssl) {
619 ERR_clear_error();
620 if((r=SSL_read(res->ssl, buf+len, 1)) <= 0) {
621 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN) {
622 buf[len] = 0;
623 return 1;
624 }
625 log_crypto_err("could not SSL_read");
626 return 0;
627 }
628 } else {
629 while(1) {
630 ssize_t rr = recv(res->fd, buf+len, 1, 0);
631 if(rr <= 0) {
632 if(rr == 0) {
633 buf[len] = 0;
634 return 1;
635 }
636 if(errno == EINTR || errno == EAGAIN)
637 continue;
638 #ifndef USE_WINSOCK
639 log_err("could not recv: %s", strerror(errno));
640 #else
641 log_err("could not recv: %s", wsa_strerror(WSAGetLastError()));
642 #endif
643 return 0;
644 }
645 break;
646 }
647 }
648 if(buf[len] == '\n') {
649 /* return string without \n */
650 buf[len] = 0;
651 return 1;
652 }
653 len++;
654 }
655 buf[max-1] = 0;
656 log_err("control line too long (%d): %s", (int)max, buf);
657 return 0;
658 }
659
660 /** skip whitespace, return new pointer into string */
661 static char*
skipwhite(char * str)662 skipwhite(char* str)
663 {
664 /* EOS \0 is not a space */
665 while( isspace((unsigned char)*str) )
666 str++;
667 return str;
668 }
669
670 /** send the OK to the control client */
send_ok(RES * ssl)671 static void send_ok(RES* ssl)
672 {
673 (void)ssl_printf(ssl, "ok\n");
674 }
675
676 /** do the stop command */
677 static void
do_stop(RES * ssl,struct worker * worker)678 do_stop(RES* ssl, struct worker* worker)
679 {
680 worker->need_to_exit = 1;
681 comm_base_exit(worker->base);
682 send_ok(ssl);
683 }
684
685 /** do the reload command */
686 static void
do_reload(RES * ssl,struct worker * worker)687 do_reload(RES* ssl, struct worker* worker)
688 {
689 worker->need_to_exit = 0;
690 comm_base_exit(worker->base);
691 send_ok(ssl);
692 }
693
694 /** do the verbosity command */
695 static void
do_verbosity(RES * ssl,char * str)696 do_verbosity(RES* ssl, char* str)
697 {
698 int val = atoi(str);
699 if(val == 0 && strcmp(str, "0") != 0) {
700 ssl_printf(ssl, "error in verbosity number syntax: %s\n", str);
701 return;
702 }
703 verbosity = val;
704 send_ok(ssl);
705 }
706
707 /** print stats from statinfo */
708 static int
print_stats(RES * ssl,const char * nm,struct ub_stats_info * s)709 print_stats(RES* ssl, const char* nm, struct ub_stats_info* s)
710 {
711 struct timeval sumwait, avg;
712 if(!ssl_printf(ssl, "%s.num.queries"SQ"%lu\n", nm,
713 (unsigned long)s->svr.num_queries)) return 0;
714 if(!ssl_printf(ssl, "%s.num.queries_ip_ratelimited"SQ"%lu\n", nm,
715 (unsigned long)s->svr.num_queries_ip_ratelimited)) return 0;
716 if(!ssl_printf(ssl, "%s.num.cachehits"SQ"%lu\n", nm,
717 (unsigned long)(s->svr.num_queries
718 - s->svr.num_queries_missed_cache))) return 0;
719 if(!ssl_printf(ssl, "%s.num.cachemiss"SQ"%lu\n", nm,
720 (unsigned long)s->svr.num_queries_missed_cache)) return 0;
721 if(!ssl_printf(ssl, "%s.num.prefetch"SQ"%lu\n", nm,
722 (unsigned long)s->svr.num_queries_prefetch)) return 0;
723 if(!ssl_printf(ssl, "%s.num.expired"SQ"%lu\n", nm,
724 (unsigned long)s->svr.ans_expired)) return 0;
725 if(!ssl_printf(ssl, "%s.num.recursivereplies"SQ"%lu\n", nm,
726 (unsigned long)s->mesh_replies_sent)) return 0;
727 #ifdef USE_DNSCRYPT
728 if(!ssl_printf(ssl, "%s.num.dnscrypt.crypted"SQ"%lu\n", nm,
729 (unsigned long)s->svr.num_query_dnscrypt_crypted)) return 0;
730 if(!ssl_printf(ssl, "%s.num.dnscrypt.cert"SQ"%lu\n", nm,
731 (unsigned long)s->svr.num_query_dnscrypt_cert)) return 0;
732 if(!ssl_printf(ssl, "%s.num.dnscrypt.cleartext"SQ"%lu\n", nm,
733 (unsigned long)s->svr.num_query_dnscrypt_cleartext)) return 0;
734 if(!ssl_printf(ssl, "%s.num.dnscrypt.malformed"SQ"%lu\n", nm,
735 (unsigned long)s->svr.num_query_dnscrypt_crypted_malformed)) return 0;
736 #endif
737 if(!ssl_printf(ssl, "%s.requestlist.avg"SQ"%g\n", nm,
738 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
739 (double)s->svr.sum_query_list_size/
740 (double)(s->svr.num_queries_missed_cache+
741 s->svr.num_queries_prefetch) : 0.0)) return 0;
742 if(!ssl_printf(ssl, "%s.requestlist.max"SQ"%lu\n", nm,
743 (unsigned long)s->svr.max_query_list_size)) return 0;
744 if(!ssl_printf(ssl, "%s.requestlist.overwritten"SQ"%lu\n", nm,
745 (unsigned long)s->mesh_jostled)) return 0;
746 if(!ssl_printf(ssl, "%s.requestlist.exceeded"SQ"%lu\n", nm,
747 (unsigned long)s->mesh_dropped)) return 0;
748 if(!ssl_printf(ssl, "%s.requestlist.current.all"SQ"%lu\n", nm,
749 (unsigned long)s->mesh_num_states)) return 0;
750 if(!ssl_printf(ssl, "%s.requestlist.current.user"SQ"%lu\n", nm,
751 (unsigned long)s->mesh_num_reply_states)) return 0;
752 #ifndef S_SPLINT_S
753 sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
754 sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
755 #endif
756 timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
757 if(!ssl_printf(ssl, "%s.recursion.time.avg"SQ ARG_LL "d.%6.6d\n", nm,
758 (long long)avg.tv_sec, (int)avg.tv_usec)) return 0;
759 if(!ssl_printf(ssl, "%s.recursion.time.median"SQ"%g\n", nm,
760 s->mesh_time_median)) return 0;
761 if(!ssl_printf(ssl, "%s.tcpusage"SQ"%lu\n", nm,
762 (unsigned long)s->svr.tcp_accept_usage)) return 0;
763 return 1;
764 }
765
766 /** print stats for one thread */
767 static int
print_thread_stats(RES * ssl,int i,struct ub_stats_info * s)768 print_thread_stats(RES* ssl, int i, struct ub_stats_info* s)
769 {
770 char nm[32];
771 snprintf(nm, sizeof(nm), "thread%d", i);
772 nm[sizeof(nm)-1]=0;
773 return print_stats(ssl, nm, s);
774 }
775
776 /** print long number */
777 static int
print_longnum(RES * ssl,const char * desc,size_t x)778 print_longnum(RES* ssl, const char* desc, size_t x)
779 {
780 if(x > 1024*1024*1024) {
781 /* more than a Gb */
782 size_t front = x / (size_t)1000000;
783 size_t back = x % (size_t)1000000;
784 return ssl_printf(ssl, "%s%u%6.6u\n", desc,
785 (unsigned)front, (unsigned)back);
786 } else {
787 return ssl_printf(ssl, "%s%lu\n", desc, (unsigned long)x);
788 }
789 }
790
791 /** print mem stats */
792 static int
print_mem(RES * ssl,struct worker * worker,struct daemon * daemon,struct ub_stats_info * s)793 print_mem(RES* ssl, struct worker* worker, struct daemon* daemon,
794 struct ub_stats_info* s)
795 {
796 size_t msg, rrset, val, iter, respip;
797 #ifdef CLIENT_SUBNET
798 size_t subnet = 0;
799 #endif /* CLIENT_SUBNET */
800 #ifdef USE_IPSECMOD
801 size_t ipsecmod = 0;
802 #endif /* USE_IPSECMOD */
803 #ifdef USE_DNSCRYPT
804 size_t dnscrypt_shared_secret = 0;
805 size_t dnscrypt_nonce = 0;
806 #endif /* USE_DNSCRYPT */
807 msg = slabhash_get_mem(daemon->env->msg_cache);
808 rrset = slabhash_get_mem(&daemon->env->rrset_cache->table);
809 val = mod_get_mem(&worker->env, "validator");
810 iter = mod_get_mem(&worker->env, "iterator");
811 respip = mod_get_mem(&worker->env, "respip");
812 #ifdef CLIENT_SUBNET
813 subnet = mod_get_mem(&worker->env, "subnet");
814 #endif /* CLIENT_SUBNET */
815 #ifdef USE_IPSECMOD
816 ipsecmod = mod_get_mem(&worker->env, "ipsecmod");
817 #endif /* USE_IPSECMOD */
818 #ifdef USE_DNSCRYPT
819 if(daemon->dnscenv) {
820 dnscrypt_shared_secret = slabhash_get_mem(
821 daemon->dnscenv->shared_secrets_cache);
822 dnscrypt_nonce = slabhash_get_mem(daemon->dnscenv->nonces_cache);
823 }
824 #endif /* USE_DNSCRYPT */
825
826 if(!print_longnum(ssl, "mem.cache.rrset"SQ, rrset))
827 return 0;
828 if(!print_longnum(ssl, "mem.cache.message"SQ, msg))
829 return 0;
830 if(!print_longnum(ssl, "mem.mod.iterator"SQ, iter))
831 return 0;
832 if(!print_longnum(ssl, "mem.mod.validator"SQ, val))
833 return 0;
834 if(!print_longnum(ssl, "mem.mod.respip"SQ, respip))
835 return 0;
836 #ifdef CLIENT_SUBNET
837 if(!print_longnum(ssl, "mem.mod.subnet"SQ, subnet))
838 return 0;
839 #endif /* CLIENT_SUBNET */
840 #ifdef USE_IPSECMOD
841 if(!print_longnum(ssl, "mem.mod.ipsecmod"SQ, ipsecmod))
842 return 0;
843 #endif /* USE_IPSECMOD */
844 #ifdef USE_DNSCRYPT
845 if(!print_longnum(ssl, "mem.cache.dnscrypt_shared_secret"SQ,
846 dnscrypt_shared_secret))
847 return 0;
848 if(!print_longnum(ssl, "mem.cache.dnscrypt_nonce"SQ,
849 dnscrypt_nonce))
850 return 0;
851 #endif /* USE_DNSCRYPT */
852 if(!print_longnum(ssl, "mem.streamwait"SQ,
853 (size_t)s->svr.mem_stream_wait))
854 return 0;
855 return 1;
856 }
857
858 /** print uptime stats */
859 static int
print_uptime(RES * ssl,struct worker * worker,int reset)860 print_uptime(RES* ssl, struct worker* worker, int reset)
861 {
862 struct timeval now = *worker->env.now_tv;
863 struct timeval up, dt;
864 timeval_subtract(&up, &now, &worker->daemon->time_boot);
865 timeval_subtract(&dt, &now, &worker->daemon->time_last_stat);
866 if(reset)
867 worker->daemon->time_last_stat = now;
868 if(!ssl_printf(ssl, "time.now"SQ ARG_LL "d.%6.6d\n",
869 (long long)now.tv_sec, (unsigned)now.tv_usec)) return 0;
870 if(!ssl_printf(ssl, "time.up"SQ ARG_LL "d.%6.6d\n",
871 (long long)up.tv_sec, (unsigned)up.tv_usec)) return 0;
872 if(!ssl_printf(ssl, "time.elapsed"SQ ARG_LL "d.%6.6d\n",
873 (long long)dt.tv_sec, (unsigned)dt.tv_usec)) return 0;
874 return 1;
875 }
876
877 /** print extended histogram */
878 static int
print_hist(RES * ssl,struct ub_stats_info * s)879 print_hist(RES* ssl, struct ub_stats_info* s)
880 {
881 struct timehist* hist;
882 size_t i;
883 hist = timehist_setup();
884 if(!hist) {
885 log_err("out of memory");
886 return 0;
887 }
888 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
889 for(i=0; i<hist->num; i++) {
890 if(!ssl_printf(ssl,
891 "histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
892 (int)hist->buckets[i].lower.tv_sec,
893 (int)hist->buckets[i].lower.tv_usec,
894 (int)hist->buckets[i].upper.tv_sec,
895 (int)hist->buckets[i].upper.tv_usec,
896 (unsigned long)hist->buckets[i].count)) {
897 timehist_delete(hist);
898 return 0;
899 }
900 }
901 timehist_delete(hist);
902 return 1;
903 }
904
905 /** print extended stats */
906 static int
print_ext(RES * ssl,struct ub_stats_info * s)907 print_ext(RES* ssl, struct ub_stats_info* s)
908 {
909 int i;
910 char nm[16];
911 const sldns_rr_descriptor* desc;
912 const sldns_lookup_table* lt;
913 /* TYPE */
914 for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
915 if(inhibit_zero && s->svr.qtype[i] == 0)
916 continue;
917 desc = sldns_rr_descript((uint16_t)i);
918 if(desc && desc->_name) {
919 snprintf(nm, sizeof(nm), "%s", desc->_name);
920 } else if (i == LDNS_RR_TYPE_IXFR) {
921 snprintf(nm, sizeof(nm), "IXFR");
922 } else if (i == LDNS_RR_TYPE_AXFR) {
923 snprintf(nm, sizeof(nm), "AXFR");
924 } else if (i == LDNS_RR_TYPE_MAILA) {
925 snprintf(nm, sizeof(nm), "MAILA");
926 } else if (i == LDNS_RR_TYPE_MAILB) {
927 snprintf(nm, sizeof(nm), "MAILB");
928 } else if (i == LDNS_RR_TYPE_ANY) {
929 snprintf(nm, sizeof(nm), "ANY");
930 } else {
931 snprintf(nm, sizeof(nm), "TYPE%d", i);
932 }
933 if(!ssl_printf(ssl, "num.query.type.%s"SQ"%lu\n",
934 nm, (unsigned long)s->svr.qtype[i])) return 0;
935 }
936 if(!inhibit_zero || s->svr.qtype_big) {
937 if(!ssl_printf(ssl, "num.query.type.other"SQ"%lu\n",
938 (unsigned long)s->svr.qtype_big)) return 0;
939 }
940 /* CLASS */
941 for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
942 if(inhibit_zero && s->svr.qclass[i] == 0)
943 continue;
944 lt = sldns_lookup_by_id(sldns_rr_classes, i);
945 if(lt && lt->name) {
946 snprintf(nm, sizeof(nm), "%s", lt->name);
947 } else {
948 snprintf(nm, sizeof(nm), "CLASS%d", i);
949 }
950 if(!ssl_printf(ssl, "num.query.class.%s"SQ"%lu\n",
951 nm, (unsigned long)s->svr.qclass[i])) return 0;
952 }
953 if(!inhibit_zero || s->svr.qclass_big) {
954 if(!ssl_printf(ssl, "num.query.class.other"SQ"%lu\n",
955 (unsigned long)s->svr.qclass_big)) return 0;
956 }
957 /* OPCODE */
958 for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
959 if(inhibit_zero && s->svr.qopcode[i] == 0)
960 continue;
961 lt = sldns_lookup_by_id(sldns_opcodes, i);
962 if(lt && lt->name) {
963 snprintf(nm, sizeof(nm), "%s", lt->name);
964 } else {
965 snprintf(nm, sizeof(nm), "OPCODE%d", i);
966 }
967 if(!ssl_printf(ssl, "num.query.opcode.%s"SQ"%lu\n",
968 nm, (unsigned long)s->svr.qopcode[i])) return 0;
969 }
970 /* transport */
971 if(!ssl_printf(ssl, "num.query.tcp"SQ"%lu\n",
972 (unsigned long)s->svr.qtcp)) return 0;
973 if(!ssl_printf(ssl, "num.query.tcpout"SQ"%lu\n",
974 (unsigned long)s->svr.qtcp_outgoing)) return 0;
975 if(!ssl_printf(ssl, "num.query.tls"SQ"%lu\n",
976 (unsigned long)s->svr.qtls)) return 0;
977 if(!ssl_printf(ssl, "num.query.tls.resume"SQ"%lu\n",
978 (unsigned long)s->svr.qtls_resume)) return 0;
979 if(!ssl_printf(ssl, "num.query.ipv6"SQ"%lu\n",
980 (unsigned long)s->svr.qipv6)) return 0;
981 /* flags */
982 if(!ssl_printf(ssl, "num.query.flags.QR"SQ"%lu\n",
983 (unsigned long)s->svr.qbit_QR)) return 0;
984 if(!ssl_printf(ssl, "num.query.flags.AA"SQ"%lu\n",
985 (unsigned long)s->svr.qbit_AA)) return 0;
986 if(!ssl_printf(ssl, "num.query.flags.TC"SQ"%lu\n",
987 (unsigned long)s->svr.qbit_TC)) return 0;
988 if(!ssl_printf(ssl, "num.query.flags.RD"SQ"%lu\n",
989 (unsigned long)s->svr.qbit_RD)) return 0;
990 if(!ssl_printf(ssl, "num.query.flags.RA"SQ"%lu\n",
991 (unsigned long)s->svr.qbit_RA)) return 0;
992 if(!ssl_printf(ssl, "num.query.flags.Z"SQ"%lu\n",
993 (unsigned long)s->svr.qbit_Z)) return 0;
994 if(!ssl_printf(ssl, "num.query.flags.AD"SQ"%lu\n",
995 (unsigned long)s->svr.qbit_AD)) return 0;
996 if(!ssl_printf(ssl, "num.query.flags.CD"SQ"%lu\n",
997 (unsigned long)s->svr.qbit_CD)) return 0;
998 if(!ssl_printf(ssl, "num.query.edns.present"SQ"%lu\n",
999 (unsigned long)s->svr.qEDNS)) return 0;
1000 if(!ssl_printf(ssl, "num.query.edns.DO"SQ"%lu\n",
1001 (unsigned long)s->svr.qEDNS_DO)) return 0;
1002
1003 /* RCODE */
1004 for(i=0; i<UB_STATS_RCODE_NUM; i++) {
1005 /* Always include RCODEs 0-5 */
1006 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
1007 continue;
1008 lt = sldns_lookup_by_id(sldns_rcodes, i);
1009 if(lt && lt->name) {
1010 snprintf(nm, sizeof(nm), "%s", lt->name);
1011 } else {
1012 snprintf(nm, sizeof(nm), "RCODE%d", i);
1013 }
1014 if(!ssl_printf(ssl, "num.answer.rcode.%s"SQ"%lu\n",
1015 nm, (unsigned long)s->svr.ans_rcode[i])) return 0;
1016 }
1017 if(!inhibit_zero || s->svr.ans_rcode_nodata) {
1018 if(!ssl_printf(ssl, "num.answer.rcode.nodata"SQ"%lu\n",
1019 (unsigned long)s->svr.ans_rcode_nodata)) return 0;
1020 }
1021 /* iteration */
1022 if(!ssl_printf(ssl, "num.query.ratelimited"SQ"%lu\n",
1023 (unsigned long)s->svr.queries_ratelimited)) return 0;
1024 /* validation */
1025 if(!ssl_printf(ssl, "num.answer.secure"SQ"%lu\n",
1026 (unsigned long)s->svr.ans_secure)) return 0;
1027 if(!ssl_printf(ssl, "num.answer.bogus"SQ"%lu\n",
1028 (unsigned long)s->svr.ans_bogus)) return 0;
1029 if(!ssl_printf(ssl, "num.rrset.bogus"SQ"%lu\n",
1030 (unsigned long)s->svr.rrset_bogus)) return 0;
1031 if(!ssl_printf(ssl, "num.query.aggressive.NOERROR"SQ"%lu\n",
1032 (unsigned long)s->svr.num_neg_cache_noerror)) return 0;
1033 if(!ssl_printf(ssl, "num.query.aggressive.NXDOMAIN"SQ"%lu\n",
1034 (unsigned long)s->svr.num_neg_cache_nxdomain)) return 0;
1035 /* threat detection */
1036 if(!ssl_printf(ssl, "unwanted.queries"SQ"%lu\n",
1037 (unsigned long)s->svr.unwanted_queries)) return 0;
1038 if(!ssl_printf(ssl, "unwanted.replies"SQ"%lu\n",
1039 (unsigned long)s->svr.unwanted_replies)) return 0;
1040 /* cache counts */
1041 if(!ssl_printf(ssl, "msg.cache.count"SQ"%u\n",
1042 (unsigned)s->svr.msg_cache_count)) return 0;
1043 if(!ssl_printf(ssl, "rrset.cache.count"SQ"%u\n",
1044 (unsigned)s->svr.rrset_cache_count)) return 0;
1045 if(!ssl_printf(ssl, "infra.cache.count"SQ"%u\n",
1046 (unsigned)s->svr.infra_cache_count)) return 0;
1047 if(!ssl_printf(ssl, "key.cache.count"SQ"%u\n",
1048 (unsigned)s->svr.key_cache_count)) return 0;
1049 /* applied RPZ actions */
1050 for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
1051 if(i == RPZ_NO_OVERRIDE_ACTION)
1052 continue;
1053 if(inhibit_zero && s->svr.rpz_action[i] == 0)
1054 continue;
1055 if(!ssl_printf(ssl, "num.rpz.action.%s"SQ"%lu\n",
1056 rpz_action_to_string(i),
1057 (unsigned long)s->svr.rpz_action[i])) return 0;
1058 }
1059 #ifdef USE_DNSCRYPT
1060 if(!ssl_printf(ssl, "dnscrypt_shared_secret.cache.count"SQ"%u\n",
1061 (unsigned)s->svr.shared_secret_cache_count)) return 0;
1062 if(!ssl_printf(ssl, "dnscrypt_nonce.cache.count"SQ"%u\n",
1063 (unsigned)s->svr.nonce_cache_count)) return 0;
1064 if(!ssl_printf(ssl, "num.query.dnscrypt.shared_secret.cachemiss"SQ"%lu\n",
1065 (unsigned long)s->svr.num_query_dnscrypt_secret_missed_cache)) return 0;
1066 if(!ssl_printf(ssl, "num.query.dnscrypt.replay"SQ"%lu\n",
1067 (unsigned long)s->svr.num_query_dnscrypt_replay)) return 0;
1068 #endif /* USE_DNSCRYPT */
1069 if(!ssl_printf(ssl, "num.query.authzone.up"SQ"%lu\n",
1070 (unsigned long)s->svr.num_query_authzone_up)) return 0;
1071 if(!ssl_printf(ssl, "num.query.authzone.down"SQ"%lu\n",
1072 (unsigned long)s->svr.num_query_authzone_down)) return 0;
1073 #ifdef CLIENT_SUBNET
1074 if(!ssl_printf(ssl, "num.query.subnet"SQ"%lu\n",
1075 (unsigned long)s->svr.num_query_subnet)) return 0;
1076 if(!ssl_printf(ssl, "num.query.subnet_cache"SQ"%lu\n",
1077 (unsigned long)s->svr.num_query_subnet_cache)) return 0;
1078 #endif /* CLIENT_SUBNET */
1079 return 1;
1080 }
1081
1082 /** do the stats command */
1083 static void
do_stats(RES * ssl,struct worker * worker,int reset)1084 do_stats(RES* ssl, struct worker* worker, int reset)
1085 {
1086 struct daemon* daemon = worker->daemon;
1087 struct ub_stats_info total;
1088 struct ub_stats_info s;
1089 int i;
1090 memset(&total, 0, sizeof(total));
1091 log_assert(daemon->num > 0);
1092 /* gather all thread statistics in one place */
1093 for(i=0; i<daemon->num; i++) {
1094 server_stats_obtain(worker, daemon->workers[i], &s, reset);
1095 if(!print_thread_stats(ssl, i, &s))
1096 return;
1097 if(i == 0)
1098 total = s;
1099 else server_stats_add(&total, &s);
1100 }
1101 /* print the thread statistics */
1102 total.mesh_time_median /= (double)daemon->num;
1103 if(!print_stats(ssl, "total", &total))
1104 return;
1105 if(!print_uptime(ssl, worker, reset))
1106 return;
1107 if(daemon->cfg->stat_extended) {
1108 if(!print_mem(ssl, worker, daemon, &total))
1109 return;
1110 if(!print_hist(ssl, &total))
1111 return;
1112 if(!print_ext(ssl, &total))
1113 return;
1114 }
1115 }
1116
1117 /** parse commandline argument domain name */
1118 static int
parse_arg_name(RES * ssl,char * str,uint8_t ** res,size_t * len,int * labs)1119 parse_arg_name(RES* ssl, char* str, uint8_t** res, size_t* len, int* labs)
1120 {
1121 uint8_t nm[LDNS_MAX_DOMAINLEN+1];
1122 size_t nmlen = sizeof(nm);
1123 int status;
1124 *res = NULL;
1125 *len = 0;
1126 *labs = 0;
1127 status = sldns_str2wire_dname_buf(str, nm, &nmlen);
1128 if(status != 0) {
1129 ssl_printf(ssl, "error cannot parse name %s at %d: %s\n", str,
1130 LDNS_WIREPARSE_OFFSET(status),
1131 sldns_get_errorstr_parse(status));
1132 return 0;
1133 }
1134 *res = memdup(nm, nmlen);
1135 if(!*res) {
1136 ssl_printf(ssl, "error out of memory\n");
1137 return 0;
1138 }
1139 *labs = dname_count_size_labels(*res, len);
1140 return 1;
1141 }
1142
1143 /** find second argument, modifies string */
1144 static int
find_arg2(RES * ssl,char * arg,char ** arg2)1145 find_arg2(RES* ssl, char* arg, char** arg2)
1146 {
1147 char* as = strchr(arg, ' ');
1148 char* at = strchr(arg, '\t');
1149 if(as && at) {
1150 if(at < as)
1151 as = at;
1152 as[0]=0;
1153 *arg2 = skipwhite(as+1);
1154 } else if(as) {
1155 as[0]=0;
1156 *arg2 = skipwhite(as+1);
1157 } else if(at) {
1158 at[0]=0;
1159 *arg2 = skipwhite(at+1);
1160 } else {
1161 ssl_printf(ssl, "error could not find next argument "
1162 "after %s\n", arg);
1163 return 0;
1164 }
1165 return 1;
1166 }
1167
1168 /** Add a new zone */
1169 static int
perform_zone_add(RES * ssl,struct local_zones * zones,char * arg)1170 perform_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1171 {
1172 uint8_t* nm;
1173 int nmlabs;
1174 size_t nmlen;
1175 char* arg2;
1176 enum localzone_type t;
1177 struct local_zone* z;
1178 if(!find_arg2(ssl, arg, &arg2))
1179 return 0;
1180 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1181 return 0;
1182 if(!local_zone_str2type(arg2, &t)) {
1183 ssl_printf(ssl, "error not a zone type. %s\n", arg2);
1184 free(nm);
1185 return 0;
1186 }
1187 lock_rw_wrlock(&zones->lock);
1188 if((z=local_zones_find(zones, nm, nmlen,
1189 nmlabs, LDNS_RR_CLASS_IN))) {
1190 /* already present in tree */
1191 lock_rw_wrlock(&z->lock);
1192 z->type = t; /* update type anyway */
1193 lock_rw_unlock(&z->lock);
1194 free(nm);
1195 lock_rw_unlock(&zones->lock);
1196 return 1;
1197 }
1198 if(!local_zones_add_zone(zones, nm, nmlen,
1199 nmlabs, LDNS_RR_CLASS_IN, t)) {
1200 lock_rw_unlock(&zones->lock);
1201 ssl_printf(ssl, "error out of memory\n");
1202 return 0;
1203 }
1204 lock_rw_unlock(&zones->lock);
1205 return 1;
1206 }
1207
1208 /** Do the local_zone command */
1209 static void
do_zone_add(RES * ssl,struct local_zones * zones,char * arg)1210 do_zone_add(RES* ssl, struct local_zones* zones, char* arg)
1211 {
1212 if(!perform_zone_add(ssl, zones, arg))
1213 return;
1214 send_ok(ssl);
1215 }
1216
1217 /** Do the local_zones command */
1218 static void
do_zones_add(RES * ssl,struct local_zones * zones)1219 do_zones_add(RES* ssl, struct local_zones* zones)
1220 {
1221 char buf[2048];
1222 int num = 0;
1223 while(ssl_read_line(ssl, buf, sizeof(buf))) {
1224 if(buf[0] == 0x04 && buf[1] == 0)
1225 break; /* end of transmission */
1226 if(!perform_zone_add(ssl, zones, buf)) {
1227 if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1228 return;
1229 }
1230 else
1231 num++;
1232 }
1233 (void)ssl_printf(ssl, "added %d zones\n", num);
1234 }
1235
1236 /** Remove a zone */
1237 static int
perform_zone_remove(RES * ssl,struct local_zones * zones,char * arg)1238 perform_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1239 {
1240 uint8_t* nm;
1241 int nmlabs;
1242 size_t nmlen;
1243 struct local_zone* z;
1244 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1245 return 0;
1246 lock_rw_wrlock(&zones->lock);
1247 if((z=local_zones_find(zones, nm, nmlen,
1248 nmlabs, LDNS_RR_CLASS_IN))) {
1249 /* present in tree */
1250 local_zones_del_zone(zones, z);
1251 }
1252 lock_rw_unlock(&zones->lock);
1253 free(nm);
1254 return 1;
1255 }
1256
1257 /** Do the local_zone_remove command */
1258 static void
do_zone_remove(RES * ssl,struct local_zones * zones,char * arg)1259 do_zone_remove(RES* ssl, struct local_zones* zones, char* arg)
1260 {
1261 if(!perform_zone_remove(ssl, zones, arg))
1262 return;
1263 send_ok(ssl);
1264 }
1265
1266 /** Do the local_zones_remove command */
1267 static void
do_zones_remove(RES * ssl,struct local_zones * zones)1268 do_zones_remove(RES* ssl, struct local_zones* zones)
1269 {
1270 char buf[2048];
1271 int num = 0;
1272 while(ssl_read_line(ssl, buf, sizeof(buf))) {
1273 if(buf[0] == 0x04 && buf[1] == 0)
1274 break; /* end of transmission */
1275 if(!perform_zone_remove(ssl, zones, buf)) {
1276 if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1277 return;
1278 }
1279 else
1280 num++;
1281 }
1282 (void)ssl_printf(ssl, "removed %d zones\n", num);
1283 }
1284
1285 /** Add new RR data */
1286 static int
perform_data_add(RES * ssl,struct local_zones * zones,char * arg)1287 perform_data_add(RES* ssl, struct local_zones* zones, char* arg)
1288 {
1289 if(!local_zones_add_RR(zones, arg)) {
1290 ssl_printf(ssl,"error in syntax or out of memory, %s\n", arg);
1291 return 0;
1292 }
1293 return 1;
1294 }
1295
1296 /** Do the local_data command */
1297 static void
do_data_add(RES * ssl,struct local_zones * zones,char * arg)1298 do_data_add(RES* ssl, struct local_zones* zones, char* arg)
1299 {
1300 if(!perform_data_add(ssl, zones, arg))
1301 return;
1302 send_ok(ssl);
1303 }
1304
1305 /** Do the local_datas command */
1306 static void
do_datas_add(RES * ssl,struct local_zones * zones)1307 do_datas_add(RES* ssl, struct local_zones* zones)
1308 {
1309 char buf[2048];
1310 int num = 0;
1311 while(ssl_read_line(ssl, buf, sizeof(buf))) {
1312 if(buf[0] == 0x04 && buf[1] == 0)
1313 break; /* end of transmission */
1314 if(!perform_data_add(ssl, zones, buf)) {
1315 if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1316 return;
1317 }
1318 else
1319 num++;
1320 }
1321 (void)ssl_printf(ssl, "added %d datas\n", num);
1322 }
1323
1324 /** Remove RR data */
1325 static int
perform_data_remove(RES * ssl,struct local_zones * zones,char * arg)1326 perform_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1327 {
1328 uint8_t* nm;
1329 int nmlabs;
1330 size_t nmlen;
1331 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1332 return 0;
1333 local_zones_del_data(zones, nm,
1334 nmlen, nmlabs, LDNS_RR_CLASS_IN);
1335 free(nm);
1336 return 1;
1337 }
1338
1339 /** Do the local_data_remove command */
1340 static void
do_data_remove(RES * ssl,struct local_zones * zones,char * arg)1341 do_data_remove(RES* ssl, struct local_zones* zones, char* arg)
1342 {
1343 if(!perform_data_remove(ssl, zones, arg))
1344 return;
1345 send_ok(ssl);
1346 }
1347
1348 /** Do the local_datas_remove command */
1349 static void
do_datas_remove(RES * ssl,struct local_zones * zones)1350 do_datas_remove(RES* ssl, struct local_zones* zones)
1351 {
1352 char buf[2048];
1353 int num = 0;
1354 while(ssl_read_line(ssl, buf, sizeof(buf))) {
1355 if(buf[0] == 0x04 && buf[1] == 0)
1356 break; /* end of transmission */
1357 if(!perform_data_remove(ssl, zones, buf)) {
1358 if(!ssl_printf(ssl, "error for input line: %s\n", buf))
1359 return;
1360 }
1361 else
1362 num++;
1363 }
1364 (void)ssl_printf(ssl, "removed %d datas\n", num);
1365 }
1366
1367 /** Add a new zone to view */
1368 static void
do_view_zone_add(RES * ssl,struct worker * worker,char * arg)1369 do_view_zone_add(RES* ssl, struct worker* worker, char* arg)
1370 {
1371 char* arg2;
1372 struct view* v;
1373 if(!find_arg2(ssl, arg, &arg2))
1374 return;
1375 v = views_find_view(worker->daemon->views,
1376 arg, 1 /* get write lock*/);
1377 if(!v) {
1378 ssl_printf(ssl,"no view with name: %s\n", arg);
1379 return;
1380 }
1381 if(!v->local_zones) {
1382 if(!(v->local_zones = local_zones_create())){
1383 lock_rw_unlock(&v->lock);
1384 ssl_printf(ssl,"error out of memory\n");
1385 return;
1386 }
1387 if(!v->isfirst) {
1388 /* Global local-zone is not used for this view,
1389 * therefore add defaults to this view-specic
1390 * local-zone. */
1391 struct config_file lz_cfg;
1392 memset(&lz_cfg, 0, sizeof(lz_cfg));
1393 local_zone_enter_defaults(v->local_zones, &lz_cfg);
1394 }
1395 }
1396 do_zone_add(ssl, v->local_zones, arg2);
1397 lock_rw_unlock(&v->lock);
1398 }
1399
1400 /** Remove a zone from view */
1401 static void
do_view_zone_remove(RES * ssl,struct worker * worker,char * arg)1402 do_view_zone_remove(RES* ssl, struct worker* worker, char* arg)
1403 {
1404 char* arg2;
1405 struct view* v;
1406 if(!find_arg2(ssl, arg, &arg2))
1407 return;
1408 v = views_find_view(worker->daemon->views,
1409 arg, 1 /* get write lock*/);
1410 if(!v) {
1411 ssl_printf(ssl,"no view with name: %s\n", arg);
1412 return;
1413 }
1414 if(!v->local_zones) {
1415 lock_rw_unlock(&v->lock);
1416 send_ok(ssl);
1417 return;
1418 }
1419 do_zone_remove(ssl, v->local_zones, arg2);
1420 lock_rw_unlock(&v->lock);
1421 }
1422
1423 /** Add new RR data to view */
1424 static void
do_view_data_add(RES * ssl,struct worker * worker,char * arg)1425 do_view_data_add(RES* ssl, struct worker* worker, char* arg)
1426 {
1427 char* arg2;
1428 struct view* v;
1429 if(!find_arg2(ssl, arg, &arg2))
1430 return;
1431 v = views_find_view(worker->daemon->views,
1432 arg, 1 /* get write lock*/);
1433 if(!v) {
1434 ssl_printf(ssl,"no view with name: %s\n", arg);
1435 return;
1436 }
1437 if(!v->local_zones) {
1438 if(!(v->local_zones = local_zones_create())){
1439 lock_rw_unlock(&v->lock);
1440 ssl_printf(ssl,"error out of memory\n");
1441 return;
1442 }
1443 }
1444 do_data_add(ssl, v->local_zones, arg2);
1445 lock_rw_unlock(&v->lock);
1446 }
1447
1448 /** Add new RR data from stdin to view */
1449 static void
do_view_datas_add(RES * ssl,struct worker * worker,char * arg)1450 do_view_datas_add(RES* ssl, struct worker* worker, char* arg)
1451 {
1452 struct view* v;
1453 v = views_find_view(worker->daemon->views,
1454 arg, 1 /* get write lock*/);
1455 if(!v) {
1456 ssl_printf(ssl,"no view with name: %s\n", arg);
1457 return;
1458 }
1459 if(!v->local_zones) {
1460 if(!(v->local_zones = local_zones_create())){
1461 lock_rw_unlock(&v->lock);
1462 ssl_printf(ssl,"error out of memory\n");
1463 return;
1464 }
1465 }
1466 do_datas_add(ssl, v->local_zones);
1467 lock_rw_unlock(&v->lock);
1468 }
1469
1470 /** Remove RR data from view */
1471 static void
do_view_data_remove(RES * ssl,struct worker * worker,char * arg)1472 do_view_data_remove(RES* ssl, struct worker* worker, char* arg)
1473 {
1474 char* arg2;
1475 struct view* v;
1476 if(!find_arg2(ssl, arg, &arg2))
1477 return;
1478 v = views_find_view(worker->daemon->views,
1479 arg, 1 /* get write lock*/);
1480 if(!v) {
1481 ssl_printf(ssl,"no view with name: %s\n", arg);
1482 return;
1483 }
1484 if(!v->local_zones) {
1485 lock_rw_unlock(&v->lock);
1486 send_ok(ssl);
1487 return;
1488 }
1489 do_data_remove(ssl, v->local_zones, arg2);
1490 lock_rw_unlock(&v->lock);
1491 }
1492
1493 /** Remove RR data from stdin from view */
1494 static void
do_view_datas_remove(RES * ssl,struct worker * worker,char * arg)1495 do_view_datas_remove(RES* ssl, struct worker* worker, char* arg)
1496 {
1497 struct view* v;
1498 v = views_find_view(worker->daemon->views,
1499 arg, 1 /* get write lock*/);
1500 if(!v) {
1501 ssl_printf(ssl,"no view with name: %s\n", arg);
1502 return;
1503 }
1504 if(!v->local_zones){
1505 lock_rw_unlock(&v->lock);
1506 ssl_printf(ssl, "removed 0 datas\n");
1507 return;
1508 }
1509
1510 do_datas_remove(ssl, v->local_zones);
1511 lock_rw_unlock(&v->lock);
1512 }
1513
1514 /** cache lookup of nameservers */
1515 static void
do_lookup(RES * ssl,struct worker * worker,char * arg)1516 do_lookup(RES* ssl, struct worker* worker, char* arg)
1517 {
1518 uint8_t* nm;
1519 int nmlabs;
1520 size_t nmlen;
1521 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1522 return;
1523 (void)print_deleg_lookup(ssl, worker, nm, nmlen, nmlabs);
1524 free(nm);
1525 }
1526
1527 /** flush something from rrset and msg caches */
1528 static void
do_cache_remove(struct worker * worker,uint8_t * nm,size_t nmlen,uint16_t t,uint16_t c)1529 do_cache_remove(struct worker* worker, uint8_t* nm, size_t nmlen,
1530 uint16_t t, uint16_t c)
1531 {
1532 hashvalue_type h;
1533 struct query_info k;
1534 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c, 0);
1535 if(t == LDNS_RR_TYPE_SOA)
1536 rrset_cache_remove(worker->env.rrset_cache, nm, nmlen, t, c,
1537 PACKED_RRSET_SOA_NEG);
1538 k.qname = nm;
1539 k.qname_len = nmlen;
1540 k.qtype = t;
1541 k.qclass = c;
1542 k.local_alias = NULL;
1543 h = query_info_hash(&k, 0);
1544 slabhash_remove(worker->env.msg_cache, h, &k);
1545 if(t == LDNS_RR_TYPE_AAAA) {
1546 /* for AAAA also flush dns64 bit_cd packet */
1547 h = query_info_hash(&k, BIT_CD);
1548 slabhash_remove(worker->env.msg_cache, h, &k);
1549 }
1550 }
1551
1552 /** flush a type */
1553 static void
do_flush_type(RES * ssl,struct worker * worker,char * arg)1554 do_flush_type(RES* ssl, struct worker* worker, char* arg)
1555 {
1556 uint8_t* nm;
1557 int nmlabs;
1558 size_t nmlen;
1559 char* arg2;
1560 uint16_t t;
1561 if(!find_arg2(ssl, arg, &arg2))
1562 return;
1563 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1564 return;
1565 t = sldns_get_rr_type_by_name(arg2);
1566 do_cache_remove(worker, nm, nmlen, t, LDNS_RR_CLASS_IN);
1567
1568 free(nm);
1569 send_ok(ssl);
1570 }
1571
1572 /** flush statistics */
1573 static void
do_flush_stats(RES * ssl,struct worker * worker)1574 do_flush_stats(RES* ssl, struct worker* worker)
1575 {
1576 worker_stats_clear(worker);
1577 send_ok(ssl);
1578 }
1579
1580 /**
1581 * Local info for deletion functions
1582 */
1583 struct del_info {
1584 /** worker */
1585 struct worker* worker;
1586 /** name to delete */
1587 uint8_t* name;
1588 /** length */
1589 size_t len;
1590 /** labels */
1591 int labs;
1592 /** time to invalidate to */
1593 time_t expired;
1594 /** number of rrsets removed */
1595 size_t num_rrsets;
1596 /** number of msgs removed */
1597 size_t num_msgs;
1598 /** number of key entries removed */
1599 size_t num_keys;
1600 /** length of addr */
1601 socklen_t addrlen;
1602 /** socket address for host deletion */
1603 struct sockaddr_storage addr;
1604 };
1605
1606 /** callback to delete hosts in infra cache */
1607 static void
infra_del_host(struct lruhash_entry * e,void * arg)1608 infra_del_host(struct lruhash_entry* e, void* arg)
1609 {
1610 /* entry is locked */
1611 struct del_info* inf = (struct del_info*)arg;
1612 struct infra_key* k = (struct infra_key*)e->key;
1613 if(sockaddr_cmp(&inf->addr, inf->addrlen, &k->addr, k->addrlen) == 0) {
1614 struct infra_data* d = (struct infra_data*)e->data;
1615 d->probedelay = 0;
1616 d->timeout_A = 0;
1617 d->timeout_AAAA = 0;
1618 d->timeout_other = 0;
1619 rtt_init(&d->rtt);
1620 if(d->ttl > inf->expired) {
1621 d->ttl = inf->expired;
1622 inf->num_keys++;
1623 }
1624 }
1625 }
1626
1627 /** flush infra cache */
1628 static void
do_flush_infra(RES * ssl,struct worker * worker,char * arg)1629 do_flush_infra(RES* ssl, struct worker* worker, char* arg)
1630 {
1631 struct sockaddr_storage addr;
1632 socklen_t len;
1633 struct del_info inf;
1634 if(strcmp(arg, "all") == 0) {
1635 slabhash_clear(worker->env.infra_cache->hosts);
1636 send_ok(ssl);
1637 return;
1638 }
1639 if(!ipstrtoaddr(arg, UNBOUND_DNS_PORT, &addr, &len)) {
1640 (void)ssl_printf(ssl, "error parsing ip addr: '%s'\n", arg);
1641 return;
1642 }
1643 /* delete all entries from cache */
1644 /* what we do is to set them all expired */
1645 inf.worker = worker;
1646 inf.name = 0;
1647 inf.len = 0;
1648 inf.labs = 0;
1649 inf.expired = *worker->env.now;
1650 inf.expired -= 3; /* handle 3 seconds skew between threads */
1651 inf.num_rrsets = 0;
1652 inf.num_msgs = 0;
1653 inf.num_keys = 0;
1654 inf.addrlen = len;
1655 memmove(&inf.addr, &addr, len);
1656 slabhash_traverse(worker->env.infra_cache->hosts, 1, &infra_del_host,
1657 &inf);
1658 send_ok(ssl);
1659 }
1660
1661 /** flush requestlist */
1662 static void
do_flush_requestlist(RES * ssl,struct worker * worker)1663 do_flush_requestlist(RES* ssl, struct worker* worker)
1664 {
1665 mesh_delete_all(worker->env.mesh);
1666 send_ok(ssl);
1667 }
1668
1669 /** callback to delete rrsets in a zone */
1670 static void
zone_del_rrset(struct lruhash_entry * e,void * arg)1671 zone_del_rrset(struct lruhash_entry* e, void* arg)
1672 {
1673 /* entry is locked */
1674 struct del_info* inf = (struct del_info*)arg;
1675 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1676 if(dname_subdomain_c(k->rk.dname, inf->name)) {
1677 struct packed_rrset_data* d =
1678 (struct packed_rrset_data*)e->data;
1679 if(d->ttl > inf->expired) {
1680 d->ttl = inf->expired;
1681 inf->num_rrsets++;
1682 }
1683 }
1684 }
1685
1686 /** callback to delete messages in a zone */
1687 static void
zone_del_msg(struct lruhash_entry * e,void * arg)1688 zone_del_msg(struct lruhash_entry* e, void* arg)
1689 {
1690 /* entry is locked */
1691 struct del_info* inf = (struct del_info*)arg;
1692 struct msgreply_entry* k = (struct msgreply_entry*)e->key;
1693 if(dname_subdomain_c(k->key.qname, inf->name)) {
1694 struct reply_info* d = (struct reply_info*)e->data;
1695 if(d->ttl > inf->expired) {
1696 d->ttl = inf->expired;
1697 d->prefetch_ttl = inf->expired;
1698 d->serve_expired_ttl = inf->expired;
1699 inf->num_msgs++;
1700 }
1701 }
1702 }
1703
1704 /** callback to delete keys in zone */
1705 static void
zone_del_kcache(struct lruhash_entry * e,void * arg)1706 zone_del_kcache(struct lruhash_entry* e, void* arg)
1707 {
1708 /* entry is locked */
1709 struct del_info* inf = (struct del_info*)arg;
1710 struct key_entry_key* k = (struct key_entry_key*)e->key;
1711 if(dname_subdomain_c(k->name, inf->name)) {
1712 struct key_entry_data* d = (struct key_entry_data*)e->data;
1713 if(d->ttl > inf->expired) {
1714 d->ttl = inf->expired;
1715 inf->num_keys++;
1716 }
1717 }
1718 }
1719
1720 /** remove all rrsets and keys from zone from cache */
1721 static void
do_flush_zone(RES * ssl,struct worker * worker,char * arg)1722 do_flush_zone(RES* ssl, struct worker* worker, char* arg)
1723 {
1724 uint8_t* nm;
1725 int nmlabs;
1726 size_t nmlen;
1727 struct del_info inf;
1728 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1729 return;
1730 /* delete all RRs and key entries from zone */
1731 /* what we do is to set them all expired */
1732 inf.worker = worker;
1733 inf.name = nm;
1734 inf.len = nmlen;
1735 inf.labs = nmlabs;
1736 inf.expired = *worker->env.now;
1737 inf.expired -= 3; /* handle 3 seconds skew between threads */
1738 inf.num_rrsets = 0;
1739 inf.num_msgs = 0;
1740 inf.num_keys = 0;
1741 slabhash_traverse(&worker->env.rrset_cache->table, 1,
1742 &zone_del_rrset, &inf);
1743
1744 slabhash_traverse(worker->env.msg_cache, 1, &zone_del_msg, &inf);
1745
1746 /* and validator cache */
1747 if(worker->env.key_cache) {
1748 slabhash_traverse(worker->env.key_cache->slab, 1,
1749 &zone_del_kcache, &inf);
1750 }
1751
1752 free(nm);
1753
1754 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1755 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1756 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1757 }
1758
1759 /** callback to delete bogus rrsets */
1760 static void
bogus_del_rrset(struct lruhash_entry * e,void * arg)1761 bogus_del_rrset(struct lruhash_entry* e, void* arg)
1762 {
1763 /* entry is locked */
1764 struct del_info* inf = (struct del_info*)arg;
1765 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1766 if(d->security == sec_status_bogus) {
1767 d->ttl = inf->expired;
1768 inf->num_rrsets++;
1769 }
1770 }
1771
1772 /** callback to delete bogus messages */
1773 static void
bogus_del_msg(struct lruhash_entry * e,void * arg)1774 bogus_del_msg(struct lruhash_entry* e, void* arg)
1775 {
1776 /* entry is locked */
1777 struct del_info* inf = (struct del_info*)arg;
1778 struct reply_info* d = (struct reply_info*)e->data;
1779 if(d->security == sec_status_bogus) {
1780 d->ttl = inf->expired;
1781 inf->num_msgs++;
1782 }
1783 }
1784
1785 /** callback to delete bogus keys */
1786 static void
bogus_del_kcache(struct lruhash_entry * e,void * arg)1787 bogus_del_kcache(struct lruhash_entry* e, void* arg)
1788 {
1789 /* entry is locked */
1790 struct del_info* inf = (struct del_info*)arg;
1791 struct key_entry_data* d = (struct key_entry_data*)e->data;
1792 if(d->isbad) {
1793 d->ttl = inf->expired;
1794 inf->num_keys++;
1795 }
1796 }
1797
1798 /** remove all bogus rrsets, msgs and keys from cache */
1799 static void
do_flush_bogus(RES * ssl,struct worker * worker)1800 do_flush_bogus(RES* ssl, struct worker* worker)
1801 {
1802 struct del_info inf;
1803 /* what we do is to set them all expired */
1804 inf.worker = worker;
1805 inf.expired = *worker->env.now;
1806 inf.expired -= 3; /* handle 3 seconds skew between threads */
1807 inf.num_rrsets = 0;
1808 inf.num_msgs = 0;
1809 inf.num_keys = 0;
1810 slabhash_traverse(&worker->env.rrset_cache->table, 1,
1811 &bogus_del_rrset, &inf);
1812
1813 slabhash_traverse(worker->env.msg_cache, 1, &bogus_del_msg, &inf);
1814
1815 /* and validator cache */
1816 if(worker->env.key_cache) {
1817 slabhash_traverse(worker->env.key_cache->slab, 1,
1818 &bogus_del_kcache, &inf);
1819 }
1820
1821 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1822 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1823 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1824 }
1825
1826 /** callback to delete negative and servfail rrsets */
1827 static void
negative_del_rrset(struct lruhash_entry * e,void * arg)1828 negative_del_rrset(struct lruhash_entry* e, void* arg)
1829 {
1830 /* entry is locked */
1831 struct del_info* inf = (struct del_info*)arg;
1832 struct ub_packed_rrset_key* k = (struct ub_packed_rrset_key*)e->key;
1833 struct packed_rrset_data* d = (struct packed_rrset_data*)e->data;
1834 /* delete the parentside negative cache rrsets,
1835 * these are nameserver rrsets that failed lookup, rdata empty */
1836 if((k->rk.flags & PACKED_RRSET_PARENT_SIDE) && d->count == 1 &&
1837 d->rrsig_count == 0 && d->rr_len[0] == 0) {
1838 d->ttl = inf->expired;
1839 inf->num_rrsets++;
1840 }
1841 }
1842
1843 /** callback to delete negative and servfail messages */
1844 static void
negative_del_msg(struct lruhash_entry * e,void * arg)1845 negative_del_msg(struct lruhash_entry* e, void* arg)
1846 {
1847 /* entry is locked */
1848 struct del_info* inf = (struct del_info*)arg;
1849 struct reply_info* d = (struct reply_info*)e->data;
1850 /* rcode not NOERROR: NXDOMAIN, SERVFAIL, ..: an nxdomain or error
1851 * or NOERROR rcode with ANCOUNT==0: a NODATA answer */
1852 if(FLAGS_GET_RCODE(d->flags) != 0 || d->an_numrrsets == 0) {
1853 d->ttl = inf->expired;
1854 inf->num_msgs++;
1855 }
1856 }
1857
1858 /** callback to delete negative key entries */
1859 static void
negative_del_kcache(struct lruhash_entry * e,void * arg)1860 negative_del_kcache(struct lruhash_entry* e, void* arg)
1861 {
1862 /* entry is locked */
1863 struct del_info* inf = (struct del_info*)arg;
1864 struct key_entry_data* d = (struct key_entry_data*)e->data;
1865 /* could be bad because of lookup failure on the DS, DNSKEY, which
1866 * was nxdomain or servfail, and thus a result of negative lookups */
1867 if(d->isbad) {
1868 d->ttl = inf->expired;
1869 inf->num_keys++;
1870 }
1871 }
1872
1873 /** remove all negative(NODATA,NXDOMAIN), and servfail messages from cache */
1874 static void
do_flush_negative(RES * ssl,struct worker * worker)1875 do_flush_negative(RES* ssl, struct worker* worker)
1876 {
1877 struct del_info inf;
1878 /* what we do is to set them all expired */
1879 inf.worker = worker;
1880 inf.expired = *worker->env.now;
1881 inf.expired -= 3; /* handle 3 seconds skew between threads */
1882 inf.num_rrsets = 0;
1883 inf.num_msgs = 0;
1884 inf.num_keys = 0;
1885 slabhash_traverse(&worker->env.rrset_cache->table, 1,
1886 &negative_del_rrset, &inf);
1887
1888 slabhash_traverse(worker->env.msg_cache, 1, &negative_del_msg, &inf);
1889
1890 /* and validator cache */
1891 if(worker->env.key_cache) {
1892 slabhash_traverse(worker->env.key_cache->slab, 1,
1893 &negative_del_kcache, &inf);
1894 }
1895
1896 (void)ssl_printf(ssl, "ok removed %lu rrsets, %lu messages "
1897 "and %lu key entries\n", (unsigned long)inf.num_rrsets,
1898 (unsigned long)inf.num_msgs, (unsigned long)inf.num_keys);
1899 }
1900
1901 /** remove name rrset from cache */
1902 static void
do_flush_name(RES * ssl,struct worker * w,char * arg)1903 do_flush_name(RES* ssl, struct worker* w, char* arg)
1904 {
1905 uint8_t* nm;
1906 int nmlabs;
1907 size_t nmlen;
1908 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
1909 return;
1910 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_A, LDNS_RR_CLASS_IN);
1911 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_AAAA, LDNS_RR_CLASS_IN);
1912 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NS, LDNS_RR_CLASS_IN);
1913 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SOA, LDNS_RR_CLASS_IN);
1914 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_CNAME, LDNS_RR_CLASS_IN);
1915 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_DNAME, LDNS_RR_CLASS_IN);
1916 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_MX, LDNS_RR_CLASS_IN);
1917 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_PTR, LDNS_RR_CLASS_IN);
1918 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_SRV, LDNS_RR_CLASS_IN);
1919 do_cache_remove(w, nm, nmlen, LDNS_RR_TYPE_NAPTR, LDNS_RR_CLASS_IN);
1920
1921 free(nm);
1922 send_ok(ssl);
1923 }
1924
1925 /** printout a delegation point info */
1926 static int
ssl_print_name_dp(RES * ssl,const char * str,uint8_t * nm,uint16_t dclass,struct delegpt * dp)1927 ssl_print_name_dp(RES* ssl, const char* str, uint8_t* nm, uint16_t dclass,
1928 struct delegpt* dp)
1929 {
1930 char buf[257];
1931 struct delegpt_ns* ns;
1932 struct delegpt_addr* a;
1933 int f = 0;
1934 if(str) { /* print header for forward, stub */
1935 char* c = sldns_wire2str_class(dclass);
1936 dname_str(nm, buf);
1937 if(!ssl_printf(ssl, "%s %s %s ", buf, (c?c:"CLASS??"), str)) {
1938 free(c);
1939 return 0;
1940 }
1941 free(c);
1942 }
1943 for(ns = dp->nslist; ns; ns = ns->next) {
1944 dname_str(ns->name, buf);
1945 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1946 return 0;
1947 f = 1;
1948 }
1949 for(a = dp->target_list; a; a = a->next_target) {
1950 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
1951 if(!ssl_printf(ssl, "%s%s", (f?" ":""), buf))
1952 return 0;
1953 f = 1;
1954 }
1955 return ssl_printf(ssl, "\n");
1956 }
1957
1958
1959 /** print root forwards */
1960 static int
print_root_fwds(RES * ssl,struct iter_forwards * fwds,uint8_t * root)1961 print_root_fwds(RES* ssl, struct iter_forwards* fwds, uint8_t* root)
1962 {
1963 struct delegpt* dp;
1964 dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
1965 if(!dp)
1966 return ssl_printf(ssl, "off (using root hints)\n");
1967 /* if dp is returned it must be the root */
1968 log_assert(query_dname_compare(dp->name, root)==0);
1969 return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
1970 }
1971
1972 /** parse args into delegpt */
1973 static struct delegpt*
parse_delegpt(RES * ssl,char * args,uint8_t * nm,int allow_names)1974 parse_delegpt(RES* ssl, char* args, uint8_t* nm, int allow_names)
1975 {
1976 /* parse args and add in */
1977 char* p = args;
1978 char* todo;
1979 struct delegpt* dp = delegpt_create_mlc(nm);
1980 struct sockaddr_storage addr;
1981 socklen_t addrlen;
1982 char* auth_name;
1983 if(!dp) {
1984 (void)ssl_printf(ssl, "error out of memory\n");
1985 return NULL;
1986 }
1987 while(p) {
1988 todo = p;
1989 p = strchr(p, ' '); /* find next spot, if any */
1990 if(p) {
1991 *p++ = 0; /* end this spot */
1992 p = skipwhite(p); /* position at next spot */
1993 }
1994 /* parse address */
1995 if(!authextstrtoaddr(todo, &addr, &addrlen, &auth_name)) {
1996 if(allow_names) {
1997 uint8_t* n = NULL;
1998 size_t ln;
1999 int lb;
2000 if(!parse_arg_name(ssl, todo, &n, &ln, &lb)) {
2001 (void)ssl_printf(ssl, "error cannot "
2002 "parse IP address or name "
2003 "'%s'\n", todo);
2004 delegpt_free_mlc(dp);
2005 return NULL;
2006 }
2007 if(!delegpt_add_ns_mlc(dp, n, 0)) {
2008 (void)ssl_printf(ssl, "error out of memory\n");
2009 free(n);
2010 delegpt_free_mlc(dp);
2011 return NULL;
2012 }
2013 free(n);
2014
2015 } else {
2016 (void)ssl_printf(ssl, "error cannot parse"
2017 " IP address '%s'\n", todo);
2018 delegpt_free_mlc(dp);
2019 return NULL;
2020 }
2021 } else {
2022 #if ! defined(HAVE_SSL_SET1_HOST) && ! defined(HAVE_X509_VERIFY_PARAM_SET1_HOST)
2023 if(auth_name)
2024 log_err("no name verification functionality in "
2025 "ssl library, ignored name for %s", todo);
2026 #endif
2027 /* add address */
2028 if(!delegpt_add_addr_mlc(dp, &addr, addrlen, 0, 0,
2029 auth_name)) {
2030 (void)ssl_printf(ssl, "error out of memory\n");
2031 delegpt_free_mlc(dp);
2032 return NULL;
2033 }
2034 }
2035 }
2036 dp->has_parent_side_NS = 1;
2037 return dp;
2038 }
2039
2040 /** do the status command */
2041 static void
do_forward(RES * ssl,struct worker * worker,char * args)2042 do_forward(RES* ssl, struct worker* worker, char* args)
2043 {
2044 struct iter_forwards* fwd = worker->env.fwds;
2045 uint8_t* root = (uint8_t*)"\000";
2046 if(!fwd) {
2047 (void)ssl_printf(ssl, "error: structure not allocated\n");
2048 return;
2049 }
2050 if(args == NULL || args[0] == 0) {
2051 (void)print_root_fwds(ssl, fwd, root);
2052 return;
2053 }
2054 /* set root forwards for this thread. since we are in remote control
2055 * the actual mesh is not running, so we can freely edit it. */
2056 /* delete all the existing queries first */
2057 mesh_delete_all(worker->env.mesh);
2058 if(strcmp(args, "off") == 0) {
2059 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, root);
2060 } else {
2061 struct delegpt* dp;
2062 if(!(dp = parse_delegpt(ssl, args, root, 0)))
2063 return;
2064 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2065 (void)ssl_printf(ssl, "error out of memory\n");
2066 return;
2067 }
2068 }
2069 send_ok(ssl);
2070 }
2071
2072 static int
parse_fs_args(RES * ssl,char * args,uint8_t ** nm,struct delegpt ** dp,int * insecure,int * prime)2073 parse_fs_args(RES* ssl, char* args, uint8_t** nm, struct delegpt** dp,
2074 int* insecure, int* prime)
2075 {
2076 char* zonename;
2077 char* rest;
2078 size_t nmlen;
2079 int nmlabs;
2080 /* parse all -x args */
2081 while(args[0] == '+') {
2082 if(!find_arg2(ssl, args, &rest))
2083 return 0;
2084 while(*(++args) != 0) {
2085 if(*args == 'i' && insecure)
2086 *insecure = 1;
2087 else if(*args == 'p' && prime)
2088 *prime = 1;
2089 else {
2090 (void)ssl_printf(ssl, "error: unknown option %s\n", args);
2091 return 0;
2092 }
2093 }
2094 args = rest;
2095 }
2096 /* parse name */
2097 if(dp) {
2098 if(!find_arg2(ssl, args, &rest))
2099 return 0;
2100 zonename = args;
2101 args = rest;
2102 } else zonename = args;
2103 if(!parse_arg_name(ssl, zonename, nm, &nmlen, &nmlabs))
2104 return 0;
2105
2106 /* parse dp */
2107 if(dp) {
2108 if(!(*dp = parse_delegpt(ssl, args, *nm, 1))) {
2109 free(*nm);
2110 return 0;
2111 }
2112 }
2113 return 1;
2114 }
2115
2116 /** do the forward_add command */
2117 static void
do_forward_add(RES * ssl,struct worker * worker,char * args)2118 do_forward_add(RES* ssl, struct worker* worker, char* args)
2119 {
2120 struct iter_forwards* fwd = worker->env.fwds;
2121 int insecure = 0;
2122 uint8_t* nm = NULL;
2123 struct delegpt* dp = NULL;
2124 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, NULL))
2125 return;
2126 if(insecure && worker->env.anchors) {
2127 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2128 nm)) {
2129 (void)ssl_printf(ssl, "error out of memory\n");
2130 delegpt_free_mlc(dp);
2131 free(nm);
2132 return;
2133 }
2134 }
2135 if(!forwards_add_zone(fwd, LDNS_RR_CLASS_IN, dp)) {
2136 (void)ssl_printf(ssl, "error out of memory\n");
2137 free(nm);
2138 return;
2139 }
2140 free(nm);
2141 send_ok(ssl);
2142 }
2143
2144 /** do the forward_remove command */
2145 static void
do_forward_remove(RES * ssl,struct worker * worker,char * args)2146 do_forward_remove(RES* ssl, struct worker* worker, char* args)
2147 {
2148 struct iter_forwards* fwd = worker->env.fwds;
2149 int insecure = 0;
2150 uint8_t* nm = NULL;
2151 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2152 return;
2153 if(insecure && worker->env.anchors)
2154 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2155 nm);
2156 forwards_delete_zone(fwd, LDNS_RR_CLASS_IN, nm);
2157 free(nm);
2158 send_ok(ssl);
2159 }
2160
2161 /** do the stub_add command */
2162 static void
do_stub_add(RES * ssl,struct worker * worker,char * args)2163 do_stub_add(RES* ssl, struct worker* worker, char* args)
2164 {
2165 struct iter_forwards* fwd = worker->env.fwds;
2166 int insecure = 0, prime = 0;
2167 uint8_t* nm = NULL;
2168 struct delegpt* dp = NULL;
2169 if(!parse_fs_args(ssl, args, &nm, &dp, &insecure, &prime))
2170 return;
2171 if(insecure && worker->env.anchors) {
2172 if(!anchors_add_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2173 nm)) {
2174 (void)ssl_printf(ssl, "error out of memory\n");
2175 delegpt_free_mlc(dp);
2176 free(nm);
2177 return;
2178 }
2179 }
2180 if(!forwards_add_stub_hole(fwd, LDNS_RR_CLASS_IN, nm)) {
2181 if(insecure && worker->env.anchors)
2182 anchors_delete_insecure(worker->env.anchors,
2183 LDNS_RR_CLASS_IN, nm);
2184 (void)ssl_printf(ssl, "error out of memory\n");
2185 delegpt_free_mlc(dp);
2186 free(nm);
2187 return;
2188 }
2189 if(!hints_add_stub(worker->env.hints, LDNS_RR_CLASS_IN, dp, !prime)) {
2190 (void)ssl_printf(ssl, "error out of memory\n");
2191 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2192 if(insecure && worker->env.anchors)
2193 anchors_delete_insecure(worker->env.anchors,
2194 LDNS_RR_CLASS_IN, nm);
2195 free(nm);
2196 return;
2197 }
2198 free(nm);
2199 send_ok(ssl);
2200 }
2201
2202 /** do the stub_remove command */
2203 static void
do_stub_remove(RES * ssl,struct worker * worker,char * args)2204 do_stub_remove(RES* ssl, struct worker* worker, char* args)
2205 {
2206 struct iter_forwards* fwd = worker->env.fwds;
2207 int insecure = 0;
2208 uint8_t* nm = NULL;
2209 if(!parse_fs_args(ssl, args, &nm, NULL, &insecure, NULL))
2210 return;
2211 if(insecure && worker->env.anchors)
2212 anchors_delete_insecure(worker->env.anchors, LDNS_RR_CLASS_IN,
2213 nm);
2214 forwards_delete_stub_hole(fwd, LDNS_RR_CLASS_IN, nm);
2215 hints_delete_stub(worker->env.hints, LDNS_RR_CLASS_IN, nm);
2216 free(nm);
2217 send_ok(ssl);
2218 }
2219
2220 /** do the insecure_add command */
2221 static void
do_insecure_add(RES * ssl,struct worker * worker,char * arg)2222 do_insecure_add(RES* ssl, struct worker* worker, char* arg)
2223 {
2224 size_t nmlen;
2225 int nmlabs;
2226 uint8_t* nm = NULL;
2227 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2228 return;
2229 if(worker->env.anchors) {
2230 if(!anchors_add_insecure(worker->env.anchors,
2231 LDNS_RR_CLASS_IN, nm)) {
2232 (void)ssl_printf(ssl, "error out of memory\n");
2233 free(nm);
2234 return;
2235 }
2236 }
2237 free(nm);
2238 send_ok(ssl);
2239 }
2240
2241 /** do the insecure_remove command */
2242 static void
do_insecure_remove(RES * ssl,struct worker * worker,char * arg)2243 do_insecure_remove(RES* ssl, struct worker* worker, char* arg)
2244 {
2245 size_t nmlen;
2246 int nmlabs;
2247 uint8_t* nm = NULL;
2248 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2249 return;
2250 if(worker->env.anchors)
2251 anchors_delete_insecure(worker->env.anchors,
2252 LDNS_RR_CLASS_IN, nm);
2253 free(nm);
2254 send_ok(ssl);
2255 }
2256
2257 static void
do_insecure_list(RES * ssl,struct worker * worker)2258 do_insecure_list(RES* ssl, struct worker* worker)
2259 {
2260 char buf[257];
2261 struct trust_anchor* a;
2262 if(worker->env.anchors) {
2263 RBTREE_FOR(a, struct trust_anchor*, worker->env.anchors->tree) {
2264 if(a->numDS == 0 && a->numDNSKEY == 0) {
2265 dname_str(a->name, buf);
2266 ssl_printf(ssl, "%s\n", buf);
2267 }
2268 }
2269 }
2270 }
2271
2272 /** do the status command */
2273 static void
do_status(RES * ssl,struct worker * worker)2274 do_status(RES* ssl, struct worker* worker)
2275 {
2276 int i;
2277 time_t uptime;
2278 if(!ssl_printf(ssl, "version: %s\n", PACKAGE_VERSION))
2279 return;
2280 if(!ssl_printf(ssl, "verbosity: %d\n", verbosity))
2281 return;
2282 if(!ssl_printf(ssl, "threads: %d\n", worker->daemon->num))
2283 return;
2284 if(!ssl_printf(ssl, "modules: %d [", worker->daemon->mods.num))
2285 return;
2286 for(i=0; i<worker->daemon->mods.num; i++) {
2287 if(!ssl_printf(ssl, " %s", worker->daemon->mods.mod[i]->name))
2288 return;
2289 }
2290 if(!ssl_printf(ssl, " ]\n"))
2291 return;
2292 uptime = (time_t)time(NULL) - (time_t)worker->daemon->time_boot.tv_sec;
2293 if(!ssl_printf(ssl, "uptime: " ARG_LL "d seconds\n", (long long)uptime))
2294 return;
2295 if(!ssl_printf(ssl, "options:%s%s%s%s\n" ,
2296 (worker->daemon->reuseport?" reuseport":""),
2297 (worker->daemon->rc->accept_list?" control":""),
2298 (worker->daemon->rc->accept_list && worker->daemon->rc->use_cert?"(ssl)":""),
2299 (worker->daemon->rc->accept_list && worker->daemon->cfg->control_ifs.first && worker->daemon->cfg->control_ifs.first->str && worker->daemon->cfg->control_ifs.first->str[0] == '/'?"(namedpipe)":"")
2300 ))
2301 return;
2302 if(!ssl_printf(ssl, "unbound (pid %d) is running...\n",
2303 (int)getpid()))
2304 return;
2305 }
2306
2307 /** get age for the mesh state */
2308 static void
get_mesh_age(struct mesh_state * m,char * buf,size_t len,struct module_env * env)2309 get_mesh_age(struct mesh_state* m, char* buf, size_t len,
2310 struct module_env* env)
2311 {
2312 if(m->reply_list) {
2313 struct timeval d;
2314 struct mesh_reply* r = m->reply_list;
2315 /* last reply is the oldest */
2316 while(r && r->next)
2317 r = r->next;
2318 timeval_subtract(&d, env->now_tv, &r->start_time);
2319 snprintf(buf, len, ARG_LL "d.%6.6d",
2320 (long long)d.tv_sec, (int)d.tv_usec);
2321 } else {
2322 snprintf(buf, len, "-");
2323 }
2324 }
2325
2326 /** get status of a mesh state */
2327 static void
get_mesh_status(struct mesh_area * mesh,struct mesh_state * m,char * buf,size_t len)2328 get_mesh_status(struct mesh_area* mesh, struct mesh_state* m,
2329 char* buf, size_t len)
2330 {
2331 enum module_ext_state s = m->s.ext_state[m->s.curmod];
2332 const char *modname = mesh->mods.mod[m->s.curmod]->name;
2333 size_t l;
2334 if(strcmp(modname, "iterator") == 0 && s == module_wait_reply &&
2335 m->s.minfo[m->s.curmod]) {
2336 /* break into iterator to find out who its waiting for */
2337 struct iter_qstate* qstate = (struct iter_qstate*)
2338 m->s.minfo[m->s.curmod];
2339 struct outbound_list* ol = &qstate->outlist;
2340 struct outbound_entry* e;
2341 snprintf(buf, len, "%s wait for", modname);
2342 l = strlen(buf);
2343 buf += l; len -= l;
2344 if(ol->first == NULL)
2345 snprintf(buf, len, " (empty_list)");
2346 for(e = ol->first; e; e = e->next) {
2347 snprintf(buf, len, " ");
2348 l = strlen(buf);
2349 buf += l; len -= l;
2350 addr_to_str(&e->qsent->addr, e->qsent->addrlen,
2351 buf, len);
2352 l = strlen(buf);
2353 buf += l; len -= l;
2354 }
2355 } else if(s == module_wait_subquery) {
2356 /* look in subs from mesh state to see what */
2357 char nm[257];
2358 struct mesh_state_ref* sub;
2359 snprintf(buf, len, "%s wants", modname);
2360 l = strlen(buf);
2361 buf += l; len -= l;
2362 if(m->sub_set.count == 0)
2363 snprintf(buf, len, " (empty_list)");
2364 RBTREE_FOR(sub, struct mesh_state_ref*, &m->sub_set) {
2365 char* t = sldns_wire2str_type(sub->s->s.qinfo.qtype);
2366 char* c = sldns_wire2str_class(sub->s->s.qinfo.qclass);
2367 dname_str(sub->s->s.qinfo.qname, nm);
2368 snprintf(buf, len, " %s %s %s", (t?t:"TYPE??"),
2369 (c?c:"CLASS??"), nm);
2370 l = strlen(buf);
2371 buf += l; len -= l;
2372 free(t);
2373 free(c);
2374 }
2375 } else {
2376 snprintf(buf, len, "%s is %s", modname, strextstate(s));
2377 }
2378 }
2379
2380 /** do the dump_requestlist command */
2381 static void
do_dump_requestlist(RES * ssl,struct worker * worker)2382 do_dump_requestlist(RES* ssl, struct worker* worker)
2383 {
2384 struct mesh_area* mesh;
2385 struct mesh_state* m;
2386 int num = 0;
2387 char buf[257];
2388 char timebuf[32];
2389 char statbuf[10240];
2390 if(!ssl_printf(ssl, "thread #%d\n", worker->thread_num))
2391 return;
2392 if(!ssl_printf(ssl, "# type cl name seconds module status\n"))
2393 return;
2394 /* show worker mesh contents */
2395 mesh = worker->env.mesh;
2396 if(!mesh) return;
2397 RBTREE_FOR(m, struct mesh_state*, &mesh->all) {
2398 char* t = sldns_wire2str_type(m->s.qinfo.qtype);
2399 char* c = sldns_wire2str_class(m->s.qinfo.qclass);
2400 dname_str(m->s.qinfo.qname, buf);
2401 get_mesh_age(m, timebuf, sizeof(timebuf), &worker->env);
2402 get_mesh_status(mesh, m, statbuf, sizeof(statbuf));
2403 if(!ssl_printf(ssl, "%3d %4s %2s %s %s %s\n",
2404 num, (t?t:"TYPE??"), (c?c:"CLASS??"), buf, timebuf,
2405 statbuf)) {
2406 free(t);
2407 free(c);
2408 return;
2409 }
2410 num++;
2411 free(t);
2412 free(c);
2413 }
2414 }
2415
2416 /** structure for argument data for dump infra host */
2417 struct infra_arg {
2418 /** the infra cache */
2419 struct infra_cache* infra;
2420 /** the SSL connection */
2421 RES* ssl;
2422 /** the time now */
2423 time_t now;
2424 /** ssl failure? stop writing and skip the rest. If the tcp
2425 * connection is broken, and writes fail, we then stop writing. */
2426 int ssl_failed;
2427 };
2428
2429 /** callback for every host element in the infra cache */
2430 static void
dump_infra_host(struct lruhash_entry * e,void * arg)2431 dump_infra_host(struct lruhash_entry* e, void* arg)
2432 {
2433 struct infra_arg* a = (struct infra_arg*)arg;
2434 struct infra_key* k = (struct infra_key*)e->key;
2435 struct infra_data* d = (struct infra_data*)e->data;
2436 char ip_str[1024];
2437 char name[257];
2438 int port;
2439 if(a->ssl_failed)
2440 return;
2441 addr_to_str(&k->addr, k->addrlen, ip_str, sizeof(ip_str));
2442 dname_str(k->zonename, name);
2443 port = (int)ntohs(((struct sockaddr_in*)&k->addr)->sin_port);
2444 if(port != UNBOUND_DNS_PORT) {
2445 snprintf(ip_str+strlen(ip_str), sizeof(ip_str)-strlen(ip_str),
2446 "@%d", port);
2447 }
2448 /* skip expired stuff (only backed off) */
2449 if(d->ttl < a->now) {
2450 if(d->rtt.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
2451 if(!ssl_printf(a->ssl, "%s %s expired rto %d\n", ip_str,
2452 name, d->rtt.rto)) {
2453 a->ssl_failed = 1;
2454 return;
2455 }
2456 }
2457 return;
2458 }
2459 if(!ssl_printf(a->ssl, "%s %s ttl %lu ping %d var %d rtt %d rto %d "
2460 "tA %d tAAAA %d tother %d "
2461 "ednsknown %d edns %d delay %d lame dnssec %d rec %d A %d "
2462 "other %d\n", ip_str, name, (unsigned long)(d->ttl - a->now),
2463 d->rtt.srtt, d->rtt.rttvar, rtt_notimeout(&d->rtt), d->rtt.rto,
2464 d->timeout_A, d->timeout_AAAA, d->timeout_other,
2465 (int)d->edns_lame_known, (int)d->edns_version,
2466 (int)(a->now<d->probedelay?(d->probedelay - a->now):0),
2467 (int)d->isdnsseclame, (int)d->rec_lame, (int)d->lame_type_A,
2468 (int)d->lame_other)) {
2469 a->ssl_failed = 1;
2470 return;
2471 }
2472 }
2473
2474 /** do the dump_infra command */
2475 static void
do_dump_infra(RES * ssl,struct worker * worker)2476 do_dump_infra(RES* ssl, struct worker* worker)
2477 {
2478 struct infra_arg arg;
2479 arg.infra = worker->env.infra_cache;
2480 arg.ssl = ssl;
2481 arg.now = *worker->env.now;
2482 arg.ssl_failed = 0;
2483 slabhash_traverse(arg.infra->hosts, 0, &dump_infra_host, (void*)&arg);
2484 }
2485
2486 /** do the log_reopen command */
2487 static void
do_log_reopen(RES * ssl,struct worker * worker)2488 do_log_reopen(RES* ssl, struct worker* worker)
2489 {
2490 struct config_file* cfg = worker->env.cfg;
2491 send_ok(ssl);
2492 log_init(cfg->logfile, cfg->use_syslog, cfg->chrootdir);
2493 }
2494
2495 /** do the auth_zone_reload command */
2496 static void
do_auth_zone_reload(RES * ssl,struct worker * worker,char * arg)2497 do_auth_zone_reload(RES* ssl, struct worker* worker, char* arg)
2498 {
2499 size_t nmlen;
2500 int nmlabs;
2501 uint8_t* nm = NULL;
2502 struct auth_zones* az = worker->env.auth_zones;
2503 struct auth_zone* z = NULL;
2504 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2505 return;
2506 if(az) {
2507 lock_rw_rdlock(&az->lock);
2508 z = auth_zone_find(az, nm, nmlen, LDNS_RR_CLASS_IN);
2509 if(z) {
2510 lock_rw_wrlock(&z->lock);
2511 }
2512 lock_rw_unlock(&az->lock);
2513 }
2514 free(nm);
2515 if(!z) {
2516 (void)ssl_printf(ssl, "error no auth-zone %s\n", arg);
2517 return;
2518 }
2519 if(!auth_zone_read_zonefile(z, worker->env.cfg)) {
2520 lock_rw_unlock(&z->lock);
2521 (void)ssl_printf(ssl, "error failed to read %s\n", arg);
2522 return;
2523 }
2524 lock_rw_unlock(&z->lock);
2525 send_ok(ssl);
2526 }
2527
2528 /** do the auth_zone_transfer command */
2529 static void
do_auth_zone_transfer(RES * ssl,struct worker * worker,char * arg)2530 do_auth_zone_transfer(RES* ssl, struct worker* worker, char* arg)
2531 {
2532 size_t nmlen;
2533 int nmlabs;
2534 uint8_t* nm = NULL;
2535 struct auth_zones* az = worker->env.auth_zones;
2536 if(!parse_arg_name(ssl, arg, &nm, &nmlen, &nmlabs))
2537 return;
2538 if(!az || !auth_zones_startprobesequence(az, &worker->env, nm, nmlen,
2539 LDNS_RR_CLASS_IN)) {
2540 (void)ssl_printf(ssl, "error zone xfr task not found %s\n", arg);
2541 free(nm);
2542 return;
2543 }
2544 free(nm);
2545 send_ok(ssl);
2546 }
2547
2548 /** do the set_option command */
2549 static void
do_set_option(RES * ssl,struct worker * worker,char * arg)2550 do_set_option(RES* ssl, struct worker* worker, char* arg)
2551 {
2552 char* arg2;
2553 if(!find_arg2(ssl, arg, &arg2))
2554 return;
2555 if(!config_set_option(worker->env.cfg, arg, arg2)) {
2556 (void)ssl_printf(ssl, "error setting option\n");
2557 return;
2558 }
2559 /* effectuate some arguments */
2560 if(strcmp(arg, "val-override-date:") == 0) {
2561 int m = modstack_find(&worker->env.mesh->mods, "validator");
2562 struct val_env* val_env = NULL;
2563 if(m != -1) val_env = (struct val_env*)worker->env.modinfo[m];
2564 if(val_env)
2565 val_env->date_override = worker->env.cfg->val_date_override;
2566 }
2567 send_ok(ssl);
2568 }
2569
2570 /* routine to printout option values over SSL */
remote_get_opt_ssl(char * line,void * arg)2571 void remote_get_opt_ssl(char* line, void* arg)
2572 {
2573 RES* ssl = (RES*)arg;
2574 (void)ssl_printf(ssl, "%s\n", line);
2575 }
2576
2577 /** do the get_option command */
2578 static void
do_get_option(RES * ssl,struct worker * worker,char * arg)2579 do_get_option(RES* ssl, struct worker* worker, char* arg)
2580 {
2581 int r;
2582 r = config_get_option(worker->env.cfg, arg, remote_get_opt_ssl, ssl);
2583 if(!r) {
2584 (void)ssl_printf(ssl, "error unknown option\n");
2585 return;
2586 }
2587 }
2588
2589 /** do the list_forwards command */
2590 static void
do_list_forwards(RES * ssl,struct worker * worker)2591 do_list_forwards(RES* ssl, struct worker* worker)
2592 {
2593 /* since its a per-worker structure no locks needed */
2594 struct iter_forwards* fwds = worker->env.fwds;
2595 struct iter_forward_zone* z;
2596 struct trust_anchor* a;
2597 int insecure;
2598 RBTREE_FOR(z, struct iter_forward_zone*, fwds->tree) {
2599 if(!z->dp) continue; /* skip empty marker for stub */
2600
2601 /* see if it is insecure */
2602 insecure = 0;
2603 if(worker->env.anchors &&
2604 (a=anchor_find(worker->env.anchors, z->name,
2605 z->namelabs, z->namelen, z->dclass))) {
2606 if(!a->keylist && !a->numDS && !a->numDNSKEY)
2607 insecure = 1;
2608 lock_basic_unlock(&a->lock);
2609 }
2610
2611 if(!ssl_print_name_dp(ssl, (insecure?"forward +i":"forward"),
2612 z->name, z->dclass, z->dp))
2613 return;
2614 }
2615 }
2616
2617 /** do the list_stubs command */
2618 static void
do_list_stubs(RES * ssl,struct worker * worker)2619 do_list_stubs(RES* ssl, struct worker* worker)
2620 {
2621 struct iter_hints_stub* z;
2622 struct trust_anchor* a;
2623 int insecure;
2624 char str[32];
2625 RBTREE_FOR(z, struct iter_hints_stub*, &worker->env.hints->tree) {
2626
2627 /* see if it is insecure */
2628 insecure = 0;
2629 if(worker->env.anchors &&
2630 (a=anchor_find(worker->env.anchors, z->node.name,
2631 z->node.labs, z->node.len, z->node.dclass))) {
2632 if(!a->keylist && !a->numDS && !a->numDNSKEY)
2633 insecure = 1;
2634 lock_basic_unlock(&a->lock);
2635 }
2636
2637 snprintf(str, sizeof(str), "stub %sprime%s",
2638 (z->noprime?"no":""), (insecure?" +i":""));
2639 if(!ssl_print_name_dp(ssl, str, z->node.name,
2640 z->node.dclass, z->dp))
2641 return;
2642 }
2643 }
2644
2645 /** do the list_auth_zones command */
2646 static void
do_list_auth_zones(RES * ssl,struct auth_zones * az)2647 do_list_auth_zones(RES* ssl, struct auth_zones* az)
2648 {
2649 struct auth_zone* z;
2650 char buf[257], buf2[256];
2651 lock_rw_rdlock(&az->lock);
2652 RBTREE_FOR(z, struct auth_zone*, &az->ztree) {
2653 lock_rw_rdlock(&z->lock);
2654 dname_str(z->name, buf);
2655 if(z->zone_expired)
2656 snprintf(buf2, sizeof(buf2), "expired");
2657 else {
2658 uint32_t serial = 0;
2659 if(auth_zone_get_serial(z, &serial))
2660 snprintf(buf2, sizeof(buf2), "serial %u",
2661 (unsigned)serial);
2662 else snprintf(buf2, sizeof(buf2), "no serial");
2663 }
2664 if(!ssl_printf(ssl, "%s\t%s\n", buf, buf2)) {
2665 /* failure to print */
2666 lock_rw_unlock(&z->lock);
2667 lock_rw_unlock(&az->lock);
2668 return;
2669 }
2670 lock_rw_unlock(&z->lock);
2671 }
2672 lock_rw_unlock(&az->lock);
2673 }
2674
2675 /** do the list_local_zones command */
2676 static void
do_list_local_zones(RES * ssl,struct local_zones * zones)2677 do_list_local_zones(RES* ssl, struct local_zones* zones)
2678 {
2679 struct local_zone* z;
2680 char buf[257];
2681 lock_rw_rdlock(&zones->lock);
2682 RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2683 lock_rw_rdlock(&z->lock);
2684 dname_str(z->name, buf);
2685 if(!ssl_printf(ssl, "%s %s\n", buf,
2686 local_zone_type2str(z->type))) {
2687 /* failure to print */
2688 lock_rw_unlock(&z->lock);
2689 lock_rw_unlock(&zones->lock);
2690 return;
2691 }
2692 lock_rw_unlock(&z->lock);
2693 }
2694 lock_rw_unlock(&zones->lock);
2695 }
2696
2697 /** do the list_local_data command */
2698 static void
do_list_local_data(RES * ssl,struct worker * worker,struct local_zones * zones)2699 do_list_local_data(RES* ssl, struct worker* worker, struct local_zones* zones)
2700 {
2701 struct local_zone* z;
2702 struct local_data* d;
2703 struct local_rrset* p;
2704 char* s = (char*)sldns_buffer_begin(worker->env.scratch_buffer);
2705 size_t slen = sldns_buffer_capacity(worker->env.scratch_buffer);
2706 lock_rw_rdlock(&zones->lock);
2707 RBTREE_FOR(z, struct local_zone*, &zones->ztree) {
2708 lock_rw_rdlock(&z->lock);
2709 RBTREE_FOR(d, struct local_data*, &z->data) {
2710 for(p = d->rrsets; p; p = p->next) {
2711 struct packed_rrset_data* d =
2712 (struct packed_rrset_data*)p->rrset->entry.data;
2713 size_t i;
2714 for(i=0; i<d->count + d->rrsig_count; i++) {
2715 if(!packed_rr_to_string(p->rrset, i,
2716 0, s, slen)) {
2717 if(!ssl_printf(ssl, "BADRR\n")) {
2718 lock_rw_unlock(&z->lock);
2719 lock_rw_unlock(&zones->lock);
2720 return;
2721 }
2722 }
2723 if(!ssl_printf(ssl, "%s\n", s)) {
2724 lock_rw_unlock(&z->lock);
2725 lock_rw_unlock(&zones->lock);
2726 return;
2727 }
2728 }
2729 }
2730 }
2731 lock_rw_unlock(&z->lock);
2732 }
2733 lock_rw_unlock(&zones->lock);
2734 }
2735
2736 /** do the view_list_local_zones command */
2737 static void
do_view_list_local_zones(RES * ssl,struct worker * worker,char * arg)2738 do_view_list_local_zones(RES* ssl, struct worker* worker, char* arg)
2739 {
2740 struct view* v = views_find_view(worker->daemon->views,
2741 arg, 0 /* get read lock*/);
2742 if(!v) {
2743 ssl_printf(ssl,"no view with name: %s\n", arg);
2744 return;
2745 }
2746 if(v->local_zones) {
2747 do_list_local_zones(ssl, v->local_zones);
2748 }
2749 lock_rw_unlock(&v->lock);
2750 }
2751
2752 /** do the view_list_local_data command */
2753 static void
do_view_list_local_data(RES * ssl,struct worker * worker,char * arg)2754 do_view_list_local_data(RES* ssl, struct worker* worker, char* arg)
2755 {
2756 struct view* v = views_find_view(worker->daemon->views,
2757 arg, 0 /* get read lock*/);
2758 if(!v) {
2759 ssl_printf(ssl,"no view with name: %s\n", arg);
2760 return;
2761 }
2762 if(v->local_zones) {
2763 do_list_local_data(ssl, worker, v->local_zones);
2764 }
2765 lock_rw_unlock(&v->lock);
2766 }
2767
2768 /** struct for user arg ratelimit list */
2769 struct ratelimit_list_arg {
2770 /** the infra cache */
2771 struct infra_cache* infra;
2772 /** the SSL to print to */
2773 RES* ssl;
2774 /** all or only ratelimited */
2775 int all;
2776 /** current time */
2777 time_t now;
2778 };
2779
2780 #define ip_ratelimit_list_arg ratelimit_list_arg
2781
2782 /** list items in the ratelimit table */
2783 static void
rate_list(struct lruhash_entry * e,void * arg)2784 rate_list(struct lruhash_entry* e, void* arg)
2785 {
2786 struct ratelimit_list_arg* a = (struct ratelimit_list_arg*)arg;
2787 struct rate_key* k = (struct rate_key*)e->key;
2788 struct rate_data* d = (struct rate_data*)e->data;
2789 char buf[257];
2790 int lim = infra_find_ratelimit(a->infra, k->name, k->namelen);
2791 int max = infra_rate_max(d, a->now);
2792 if(a->all == 0) {
2793 if(max < lim)
2794 return;
2795 }
2796 dname_str(k->name, buf);
2797 ssl_printf(a->ssl, "%s %d limit %d\n", buf, max, lim);
2798 }
2799
2800 /** list items in the ip_ratelimit table */
2801 static void
ip_rate_list(struct lruhash_entry * e,void * arg)2802 ip_rate_list(struct lruhash_entry* e, void* arg)
2803 {
2804 char ip[128];
2805 struct ip_ratelimit_list_arg* a = (struct ip_ratelimit_list_arg*)arg;
2806 struct ip_rate_key* k = (struct ip_rate_key*)e->key;
2807 struct ip_rate_data* d = (struct ip_rate_data*)e->data;
2808 int lim = infra_ip_ratelimit;
2809 int max = infra_rate_max(d, a->now);
2810 if(a->all == 0) {
2811 if(max < lim)
2812 return;
2813 }
2814 addr_to_str(&k->addr, k->addrlen, ip, sizeof(ip));
2815 ssl_printf(a->ssl, "%s %d limit %d\n", ip, max, lim);
2816 }
2817
2818 /** do the ratelimit_list command */
2819 static void
do_ratelimit_list(RES * ssl,struct worker * worker,char * arg)2820 do_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2821 {
2822 struct ratelimit_list_arg a;
2823 a.all = 0;
2824 a.infra = worker->env.infra_cache;
2825 a.now = *worker->env.now;
2826 a.ssl = ssl;
2827 arg = skipwhite(arg);
2828 if(strcmp(arg, "+a") == 0)
2829 a.all = 1;
2830 if(a.infra->domain_rates==NULL ||
2831 (a.all == 0 && infra_dp_ratelimit == 0))
2832 return;
2833 slabhash_traverse(a.infra->domain_rates, 0, rate_list, &a);
2834 }
2835
2836 /** do the ip_ratelimit_list command */
2837 static void
do_ip_ratelimit_list(RES * ssl,struct worker * worker,char * arg)2838 do_ip_ratelimit_list(RES* ssl, struct worker* worker, char* arg)
2839 {
2840 struct ip_ratelimit_list_arg a;
2841 a.all = 0;
2842 a.infra = worker->env.infra_cache;
2843 a.now = *worker->env.now;
2844 a.ssl = ssl;
2845 arg = skipwhite(arg);
2846 if(strcmp(arg, "+a") == 0)
2847 a.all = 1;
2848 if(a.infra->client_ip_rates==NULL ||
2849 (a.all == 0 && infra_ip_ratelimit == 0))
2850 return;
2851 slabhash_traverse(a.infra->client_ip_rates, 0, ip_rate_list, &a);
2852 }
2853
2854 /** tell other processes to execute the command */
2855 static void
distribute_cmd(struct daemon_remote * rc,RES * ssl,char * cmd)2856 distribute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd)
2857 {
2858 int i;
2859 if(!cmd || !ssl)
2860 return;
2861 /* skip i=0 which is me */
2862 for(i=1; i<rc->worker->daemon->num; i++) {
2863 worker_send_cmd(rc->worker->daemon->workers[i],
2864 worker_cmd_remote);
2865 if(!tube_write_msg(rc->worker->daemon->workers[i]->cmd,
2866 (uint8_t*)cmd, strlen(cmd)+1, 0)) {
2867 ssl_printf(ssl, "error could not distribute cmd\n");
2868 return;
2869 }
2870 }
2871 }
2872
2873 /** check for name with end-of-string, space or tab after it */
2874 static int
cmdcmp(char * p,const char * cmd,size_t len)2875 cmdcmp(char* p, const char* cmd, size_t len)
2876 {
2877 return strncmp(p,cmd,len)==0 && (p[len]==0||p[len]==' '||p[len]=='\t');
2878 }
2879
2880 /** execute a remote control command */
2881 static void
execute_cmd(struct daemon_remote * rc,RES * ssl,char * cmd,struct worker * worker)2882 execute_cmd(struct daemon_remote* rc, RES* ssl, char* cmd,
2883 struct worker* worker)
2884 {
2885 char* p = skipwhite(cmd);
2886 /* compare command */
2887 if(cmdcmp(p, "stop", 4)) {
2888 do_stop(ssl, worker);
2889 return;
2890 } else if(cmdcmp(p, "reload", 6)) {
2891 do_reload(ssl, worker);
2892 return;
2893 } else if(cmdcmp(p, "stats_noreset", 13)) {
2894 do_stats(ssl, worker, 0);
2895 return;
2896 } else if(cmdcmp(p, "stats", 5)) {
2897 do_stats(ssl, worker, 1);
2898 return;
2899 } else if(cmdcmp(p, "status", 6)) {
2900 do_status(ssl, worker);
2901 return;
2902 } else if(cmdcmp(p, "dump_cache", 10)) {
2903 (void)dump_cache(ssl, worker);
2904 return;
2905 } else if(cmdcmp(p, "load_cache", 10)) {
2906 if(load_cache(ssl, worker)) send_ok(ssl);
2907 return;
2908 } else if(cmdcmp(p, "list_forwards", 13)) {
2909 do_list_forwards(ssl, worker);
2910 return;
2911 } else if(cmdcmp(p, "list_stubs", 10)) {
2912 do_list_stubs(ssl, worker);
2913 return;
2914 } else if(cmdcmp(p, "list_insecure", 13)) {
2915 do_insecure_list(ssl, worker);
2916 return;
2917 } else if(cmdcmp(p, "list_local_zones", 16)) {
2918 do_list_local_zones(ssl, worker->daemon->local_zones);
2919 return;
2920 } else if(cmdcmp(p, "list_local_data", 15)) {
2921 do_list_local_data(ssl, worker, worker->daemon->local_zones);
2922 return;
2923 } else if(cmdcmp(p, "view_list_local_zones", 21)) {
2924 do_view_list_local_zones(ssl, worker, skipwhite(p+21));
2925 return;
2926 } else if(cmdcmp(p, "view_list_local_data", 20)) {
2927 do_view_list_local_data(ssl, worker, skipwhite(p+20));
2928 return;
2929 } else if(cmdcmp(p, "ratelimit_list", 14)) {
2930 do_ratelimit_list(ssl, worker, p+14);
2931 return;
2932 } else if(cmdcmp(p, "ip_ratelimit_list", 17)) {
2933 do_ip_ratelimit_list(ssl, worker, p+17);
2934 return;
2935 } else if(cmdcmp(p, "list_auth_zones", 15)) {
2936 do_list_auth_zones(ssl, worker->env.auth_zones);
2937 return;
2938 } else if(cmdcmp(p, "auth_zone_reload", 16)) {
2939 do_auth_zone_reload(ssl, worker, skipwhite(p+16));
2940 return;
2941 } else if(cmdcmp(p, "auth_zone_transfer", 18)) {
2942 do_auth_zone_transfer(ssl, worker, skipwhite(p+18));
2943 return;
2944 } else if(cmdcmp(p, "stub_add", 8)) {
2945 /* must always distribute this cmd */
2946 if(rc) distribute_cmd(rc, ssl, cmd);
2947 do_stub_add(ssl, worker, skipwhite(p+8));
2948 return;
2949 } else if(cmdcmp(p, "stub_remove", 11)) {
2950 /* must always distribute this cmd */
2951 if(rc) distribute_cmd(rc, ssl, cmd);
2952 do_stub_remove(ssl, worker, skipwhite(p+11));
2953 return;
2954 } else if(cmdcmp(p, "forward_add", 11)) {
2955 /* must always distribute this cmd */
2956 if(rc) distribute_cmd(rc, ssl, cmd);
2957 do_forward_add(ssl, worker, skipwhite(p+11));
2958 return;
2959 } else if(cmdcmp(p, "forward_remove", 14)) {
2960 /* must always distribute this cmd */
2961 if(rc) distribute_cmd(rc, ssl, cmd);
2962 do_forward_remove(ssl, worker, skipwhite(p+14));
2963 return;
2964 } else if(cmdcmp(p, "insecure_add", 12)) {
2965 /* must always distribute this cmd */
2966 if(rc) distribute_cmd(rc, ssl, cmd);
2967 do_insecure_add(ssl, worker, skipwhite(p+12));
2968 return;
2969 } else if(cmdcmp(p, "insecure_remove", 15)) {
2970 /* must always distribute this cmd */
2971 if(rc) distribute_cmd(rc, ssl, cmd);
2972 do_insecure_remove(ssl, worker, skipwhite(p+15));
2973 return;
2974 } else if(cmdcmp(p, "forward", 7)) {
2975 /* must always distribute this cmd */
2976 if(rc) distribute_cmd(rc, ssl, cmd);
2977 do_forward(ssl, worker, skipwhite(p+7));
2978 return;
2979 } else if(cmdcmp(p, "flush_stats", 11)) {
2980 /* must always distribute this cmd */
2981 if(rc) distribute_cmd(rc, ssl, cmd);
2982 do_flush_stats(ssl, worker);
2983 return;
2984 } else if(cmdcmp(p, "flush_requestlist", 17)) {
2985 /* must always distribute this cmd */
2986 if(rc) distribute_cmd(rc, ssl, cmd);
2987 do_flush_requestlist(ssl, worker);
2988 return;
2989 } else if(cmdcmp(p, "lookup", 6)) {
2990 do_lookup(ssl, worker, skipwhite(p+6));
2991 return;
2992 }
2993
2994 #ifdef THREADS_DISABLED
2995 /* other processes must execute the command as well */
2996 /* commands that should not be distributed, returned above. */
2997 if(rc) { /* only if this thread is the master (rc) thread */
2998 /* done before the code below, which may split the string */
2999 distribute_cmd(rc, ssl, cmd);
3000 }
3001 #endif
3002 if(cmdcmp(p, "verbosity", 9)) {
3003 do_verbosity(ssl, skipwhite(p+9));
3004 } else if(cmdcmp(p, "local_zone_remove", 17)) {
3005 do_zone_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3006 } else if(cmdcmp(p, "local_zones_remove", 18)) {
3007 do_zones_remove(ssl, worker->daemon->local_zones);
3008 } else if(cmdcmp(p, "local_zone", 10)) {
3009 do_zone_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3010 } else if(cmdcmp(p, "local_zones", 11)) {
3011 do_zones_add(ssl, worker->daemon->local_zones);
3012 } else if(cmdcmp(p, "local_data_remove", 17)) {
3013 do_data_remove(ssl, worker->daemon->local_zones, skipwhite(p+17));
3014 } else if(cmdcmp(p, "local_datas_remove", 18)) {
3015 do_datas_remove(ssl, worker->daemon->local_zones);
3016 } else if(cmdcmp(p, "local_data", 10)) {
3017 do_data_add(ssl, worker->daemon->local_zones, skipwhite(p+10));
3018 } else if(cmdcmp(p, "local_datas", 11)) {
3019 do_datas_add(ssl, worker->daemon->local_zones);
3020 } else if(cmdcmp(p, "view_local_zone_remove", 22)) {
3021 do_view_zone_remove(ssl, worker, skipwhite(p+22));
3022 } else if(cmdcmp(p, "view_local_zone", 15)) {
3023 do_view_zone_add(ssl, worker, skipwhite(p+15));
3024 } else if(cmdcmp(p, "view_local_data_remove", 22)) {
3025 do_view_data_remove(ssl, worker, skipwhite(p+22));
3026 } else if(cmdcmp(p, "view_local_datas_remove", 23)){
3027 do_view_datas_remove(ssl, worker, skipwhite(p+23));
3028 } else if(cmdcmp(p, "view_local_data", 15)) {
3029 do_view_data_add(ssl, worker, skipwhite(p+15));
3030 } else if(cmdcmp(p, "view_local_datas", 16)) {
3031 do_view_datas_add(ssl, worker, skipwhite(p+16));
3032 } else if(cmdcmp(p, "flush_zone", 10)) {
3033 do_flush_zone(ssl, worker, skipwhite(p+10));
3034 } else if(cmdcmp(p, "flush_type", 10)) {
3035 do_flush_type(ssl, worker, skipwhite(p+10));
3036 } else if(cmdcmp(p, "flush_infra", 11)) {
3037 do_flush_infra(ssl, worker, skipwhite(p+11));
3038 } else if(cmdcmp(p, "flush", 5)) {
3039 do_flush_name(ssl, worker, skipwhite(p+5));
3040 } else if(cmdcmp(p, "dump_requestlist", 16)) {
3041 do_dump_requestlist(ssl, worker);
3042 } else if(cmdcmp(p, "dump_infra", 10)) {
3043 do_dump_infra(ssl, worker);
3044 } else if(cmdcmp(p, "log_reopen", 10)) {
3045 do_log_reopen(ssl, worker);
3046 } else if(cmdcmp(p, "set_option", 10)) {
3047 do_set_option(ssl, worker, skipwhite(p+10));
3048 } else if(cmdcmp(p, "get_option", 10)) {
3049 do_get_option(ssl, worker, skipwhite(p+10));
3050 } else if(cmdcmp(p, "flush_bogus", 11)) {
3051 do_flush_bogus(ssl, worker);
3052 } else if(cmdcmp(p, "flush_negative", 14)) {
3053 do_flush_negative(ssl, worker);
3054 } else {
3055 (void)ssl_printf(ssl, "error unknown command '%s'\n", p);
3056 }
3057 }
3058
3059 void
daemon_remote_exec(struct worker * worker)3060 daemon_remote_exec(struct worker* worker)
3061 {
3062 /* read the cmd string */
3063 uint8_t* msg = NULL;
3064 uint32_t len = 0;
3065 if(!tube_read_msg(worker->cmd, &msg, &len, 0)) {
3066 log_err("daemon_remote_exec: tube_read_msg failed");
3067 return;
3068 }
3069 verbose(VERB_ALGO, "remote exec distributed: %s", (char*)msg);
3070 execute_cmd(NULL, NULL, (char*)msg, worker);
3071 free(msg);
3072 }
3073
3074 /** handle remote control request */
3075 static void
handle_req(struct daemon_remote * rc,struct rc_state * s,RES * res)3076 handle_req(struct daemon_remote* rc, struct rc_state* s, RES* res)
3077 {
3078 int r;
3079 char pre[10];
3080 char magic[7];
3081 char buf[1024];
3082 #ifdef USE_WINSOCK
3083 /* makes it possible to set the socket blocking again. */
3084 /* basically removes it from winsock_event ... */
3085 WSAEventSelect(s->c->fd, NULL, 0);
3086 #endif
3087 fd_set_block(s->c->fd);
3088
3089 /* try to read magic UBCT[version]_space_ string */
3090 if(res->ssl) {
3091 ERR_clear_error();
3092 if((r=SSL_read(res->ssl, magic, (int)sizeof(magic)-1)) <= 0) {
3093 if(SSL_get_error(res->ssl, r) == SSL_ERROR_ZERO_RETURN)
3094 return;
3095 log_crypto_err("could not SSL_read");
3096 return;
3097 }
3098 } else {
3099 while(1) {
3100 ssize_t rr = recv(res->fd, magic, sizeof(magic)-1, 0);
3101 if(rr <= 0) {
3102 if(rr == 0) return;
3103 if(errno == EINTR || errno == EAGAIN)
3104 continue;
3105 #ifndef USE_WINSOCK
3106 log_err("could not recv: %s", strerror(errno));
3107 #else
3108 log_err("could not recv: %s", wsa_strerror(WSAGetLastError()));
3109 #endif
3110 return;
3111 }
3112 r = (int)rr;
3113 break;
3114 }
3115 }
3116 magic[6] = 0;
3117 if( r != 6 || strncmp(magic, "UBCT", 4) != 0) {
3118 verbose(VERB_QUERY, "control connection has bad magic string");
3119 /* probably wrong tool connected, ignore it completely */
3120 return;
3121 }
3122
3123 /* read the command line */
3124 if(!ssl_read_line(res, buf, sizeof(buf))) {
3125 return;
3126 }
3127 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
3128 if(strcmp(magic, pre) != 0) {
3129 verbose(VERB_QUERY, "control connection had bad "
3130 "version %s, cmd: %s", magic, buf);
3131 ssl_printf(res, "error version mismatch\n");
3132 return;
3133 }
3134 verbose(VERB_DETAIL, "control cmd: %s", buf);
3135
3136 /* figure out what to do */
3137 execute_cmd(rc, res, buf, rc->worker);
3138 }
3139
3140 /** handle SSL_do_handshake changes to the file descriptor to wait for later */
3141 static int
remote_handshake_later(struct daemon_remote * rc,struct rc_state * s,struct comm_point * c,int r,int r2)3142 remote_handshake_later(struct daemon_remote* rc, struct rc_state* s,
3143 struct comm_point* c, int r, int r2)
3144 {
3145 if(r2 == SSL_ERROR_WANT_READ) {
3146 if(s->shake_state == rc_hs_read) {
3147 /* try again later */
3148 return 0;
3149 }
3150 s->shake_state = rc_hs_read;
3151 comm_point_listen_for_rw(c, 1, 0);
3152 return 0;
3153 } else if(r2 == SSL_ERROR_WANT_WRITE) {
3154 if(s->shake_state == rc_hs_write) {
3155 /* try again later */
3156 return 0;
3157 }
3158 s->shake_state = rc_hs_write;
3159 comm_point_listen_for_rw(c, 0, 1);
3160 return 0;
3161 } else {
3162 if(r == 0)
3163 log_err("remote control connection closed prematurely");
3164 log_addr(VERB_OPS, "failed connection from",
3165 &s->c->repinfo.addr, s->c->repinfo.addrlen);
3166 log_crypto_err("remote control failed ssl");
3167 clean_point(rc, s);
3168 }
3169 return 0;
3170 }
3171
remote_control_callback(struct comm_point * c,void * arg,int err,struct comm_reply * ATTR_UNUSED (rep))3172 int remote_control_callback(struct comm_point* c, void* arg, int err,
3173 struct comm_reply* ATTR_UNUSED(rep))
3174 {
3175 RES res;
3176 struct rc_state* s = (struct rc_state*)arg;
3177 struct daemon_remote* rc = s->rc;
3178 int r;
3179 if(err != NETEVENT_NOERROR) {
3180 if(err==NETEVENT_TIMEOUT)
3181 log_err("remote control timed out");
3182 clean_point(rc, s);
3183 return 0;
3184 }
3185 if(s->ssl) {
3186 /* (continue to) setup the SSL connection */
3187 ERR_clear_error();
3188 r = SSL_do_handshake(s->ssl);
3189 if(r != 1) {
3190 int r2 = SSL_get_error(s->ssl, r);
3191 return remote_handshake_later(rc, s, c, r, r2);
3192 }
3193 s->shake_state = rc_none;
3194 }
3195
3196 /* once handshake has completed, check authentication */
3197 if (!rc->use_cert) {
3198 verbose(VERB_ALGO, "unauthenticated remote control connection");
3199 } else if(SSL_get_verify_result(s->ssl) == X509_V_OK) {
3200 X509* x = SSL_get_peer_certificate(s->ssl);
3201 if(!x) {
3202 verbose(VERB_DETAIL, "remote control connection "
3203 "provided no client certificate");
3204 clean_point(rc, s);
3205 return 0;
3206 }
3207 verbose(VERB_ALGO, "remote control connection authenticated");
3208 X509_free(x);
3209 } else {
3210 verbose(VERB_DETAIL, "remote control connection failed to "
3211 "authenticate with client certificate");
3212 clean_point(rc, s);
3213 return 0;
3214 }
3215
3216 /* if OK start to actually handle the request */
3217 res.ssl = s->ssl;
3218 res.fd = c->fd;
3219 handle_req(rc, s, &res);
3220
3221 verbose(VERB_ALGO, "remote control operation completed");
3222 clean_point(rc, s);
3223 return 0;
3224 }
3225