2 * checkconf/unbound-control.c - remote control utility for unbound.
4 * Copyright (c) 2008, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
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.
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.
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.
39 * The remote control utility contacts the unbound server over ssl and
40 * sends the command, receives the answer, and displays the result
41 * from the commandline.
48 #ifdef HAVE_OPENSSL_SSL_H
49 #include <openssl/ssl.h>
51 #ifdef HAVE_OPENSSL_ERR_H
52 #include <openssl/err.h>
54 #ifdef HAVE_OPENSSL_RAND_H
55 #include <openssl/rand.h>
58 #include "util/config_file.h"
59 #include "util/locks.h"
60 #include "util/net_help.h"
61 #include "util/shm_side/shm_main.h"
62 #include "daemon/stats.h"
63 #include "sldns/wire2str.h"
64 #include "sldns/pkthdr.h"
76 /** Give unbound-control usage, and exit (1). */
80 printf("Usage: local-unbound-control [options] command\n");
81 printf(" Remote control utility for unbound server.\n");
83 printf(" -c file config file, default is %s\n", CONFIGFILE);
84 printf(" -s ip[@port] server address, if omitted config is used.\n");
85 printf(" -q quiet (don't print anything if it works ok).\n");
86 printf(" -h show this usage help.\n");
87 printf("Commands:\n");
88 printf(" start start server; runs unbound(8)\n");
89 printf(" stop stops the server\n");
90 printf(" reload reloads the server\n");
91 printf(" (this flushes data, stats, requestlist)\n");
92 printf(" stats print statistics\n");
93 printf(" stats_noreset peek at statistics\n");
95 printf(" stats_shm print statistics using shm\n");
97 printf(" status display status of server\n");
98 printf(" verbosity <number> change logging detail\n");
99 printf(" log_reopen close and open the logfile\n");
100 printf(" local_zone <name> <type> add new local zone\n");
101 printf(" local_zone_remove <name> remove local zone and its contents\n");
102 printf(" local_data <RR data...> add local data, for example\n");
103 printf(" local_data www.example.com A 192.0.2.1\n");
104 printf(" local_data_remove <name> remove local RR data from name\n");
105 printf(" local_zones, local_zones_remove, local_datas, local_datas_remove\n");
106 printf(" same, but read list from stdin\n");
107 printf(" (one entry per line).\n");
108 printf(" dump_cache print cache to stdout\n");
109 printf(" load_cache load cache from stdin\n");
110 printf(" lookup <name> print nameservers for name\n");
111 printf(" flush <name> flushes common types for name from cache\n");
112 printf(" types: A, AAAA, MX, PTR, NS,\n");
113 printf(" SOA, CNAME, DNAME, SRV, NAPTR\n");
114 printf(" flush_type <name> <type> flush name, type from cache\n");
115 printf(" flush_zone <name> flush everything at or under name\n");
116 printf(" from rr and dnssec caches\n");
117 printf(" flush_bogus flush all bogus data\n");
118 printf(" flush_negative flush all negative data\n");
119 printf(" flush_stats flush statistics, make zero\n");
120 printf(" flush_requestlist drop queries that are worked on\n");
121 printf(" dump_requestlist show what is worked on by first thread\n");
122 printf(" flush_infra [all | ip] remove ping, edns for one IP or all\n");
123 printf(" dump_infra show ping and edns entries\n");
124 printf(" set_option opt: val set option to value, no reload\n");
125 printf(" get_option opt get option value\n");
126 printf(" list_stubs list stub-zones and root hints in use\n");
127 printf(" list_forwards list forward-zones in use\n");
128 printf(" list_insecure list domain-insecure zones\n");
129 printf(" list_local_zones list local-zones in use\n");
130 printf(" list_local_data list local-data RRs in use\n");
131 printf(" insecure_add zone add domain-insecure zone\n");
132 printf(" insecure_remove zone remove domain-insecure zone\n");
133 printf(" forward_add [+i] zone addr.. add forward-zone with servers\n");
134 printf(" forward_remove [+i] zone remove forward zone\n");
135 printf(" stub_add [+ip] zone addr.. add stub-zone with servers\n");
136 printf(" stub_remove [+i] zone remove stub zone\n");
137 printf(" +i also do dnssec insecure point\n");
138 printf(" +p set stub to use priming\n");
139 printf(" forward [off | addr ...] without arg show forward setup\n");
140 printf(" or off to turn off root forwarding\n");
141 printf(" or give list of ip addresses\n");
142 printf(" ratelimit_list [+a] list ratelimited domains\n");
143 printf(" ip_ratelimit_list [+a] list ratelimited ip addresses\n");
144 printf(" +a list all, also not ratelimited\n");
145 printf(" list_auth_zones list auth zones\n");
146 printf(" view_list_local_zones view list local-zones in view\n");
147 printf(" view_list_local_data view list local-data RRs in view\n");
148 printf(" view_local_zone view name type add local-zone in view\n");
149 printf(" view_local_zone_remove view name remove local-zone in view\n");
150 printf(" view_local_data view RR... add local-data in view\n");
151 printf(" view_local_data_remove view name remove local-data in view\n");
152 printf("Version %s\n", PACKAGE_VERSION);
153 printf("BSD licensed, see LICENSE in source package for details.\n");
154 printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
159 /** what to put on statistics lines between var and value, ": " or "=" */
161 /** if true, inhibits a lot of =0 lines from the stats output */
162 static const int inhibit_zero = 1;
163 /** divide sum of timers to get average */
165 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d)
174 avg->tv_sec = sum->tv_sec / d;
175 avg->tv_usec = sum->tv_usec / d;
176 /* handle fraction from seconds divide */
177 leftover = sum->tv_sec - avg->tv_sec*d;
178 avg->tv_usec += (leftover*1000000)/d;
182 /** print unsigned long stats value */
183 #define PR_UL_NM(str, var) printf("%s."str SQ"%lu\n", nm, (unsigned long)(var));
184 #define PR_UL(str, var) printf(str SQ"%lu\n", (unsigned long)(var));
185 #define PR_UL_SUB(str, nm, var) printf(str".%s"SQ"%lu\n", nm, (unsigned long)(var));
186 #define PR_TIMEVAL(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
187 (long long)var.tv_sec, (int)var.tv_usec);
188 #define PR_STATSTIME(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
189 (long long)var ## _sec, (int)var ## _usec);
190 #define PR_LL(str, var) printf(str SQ ARG_LL"d\n", (long long)(var));
192 /** print stat block */
193 static void pr_stats(const char* nm, struct ub_stats_info* s)
195 struct timeval sumwait, avg;
196 PR_UL_NM("num.queries", s->svr.num_queries);
197 PR_UL_NM("num.queries_ip_ratelimited",
198 s->svr.num_queries_ip_ratelimited);
199 PR_UL_NM("num.cachehits",
200 s->svr.num_queries - s->svr.num_queries_missed_cache);
201 PR_UL_NM("num.cachemiss", s->svr.num_queries_missed_cache);
202 PR_UL_NM("num.prefetch", s->svr.num_queries_prefetch);
203 PR_UL_NM("num.zero_ttl", s->svr.zero_ttl_responses);
204 PR_UL_NM("num.recursivereplies", s->mesh_replies_sent);
206 PR_UL_NM("num.dnscrypt.crypted", s->svr.num_query_dnscrypt_crypted);
207 PR_UL_NM("num.dnscrypt.cert", s->svr.num_query_dnscrypt_cert);
208 PR_UL_NM("num.dnscrypt.cleartext", s->svr.num_query_dnscrypt_cleartext);
209 PR_UL_NM("num.dnscrypt.malformed",
210 s->svr.num_query_dnscrypt_crypted_malformed);
211 #endif /* USE_DNSCRYPT */
212 printf("%s.requestlist.avg"SQ"%g\n", nm,
213 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
214 (double)s->svr.sum_query_list_size/
215 (double)(s->svr.num_queries_missed_cache+
216 s->svr.num_queries_prefetch) : 0.0);
217 PR_UL_NM("requestlist.max", s->svr.max_query_list_size);
218 PR_UL_NM("requestlist.overwritten", s->mesh_jostled);
219 PR_UL_NM("requestlist.exceeded", s->mesh_dropped);
220 PR_UL_NM("requestlist.current.all", s->mesh_num_states);
221 PR_UL_NM("requestlist.current.user", s->mesh_num_reply_states);
223 sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
224 sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
226 timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
228 PR_TIMEVAL("recursion.time.avg", avg);
229 printf("%s.recursion.time.median"SQ"%g\n", nm, s->mesh_time_median);
230 PR_UL_NM("tcpusage", s->svr.tcp_accept_usage);
234 static void print_uptime(struct ub_shm_stat_info* shm_stat)
236 PR_STATSTIME("time.now", shm_stat->time.now);
237 PR_STATSTIME("time.up", shm_stat->time.up);
238 PR_STATSTIME("time.elapsed", shm_stat->time.elapsed);
241 /** print memory usage */
242 static void print_mem(struct ub_shm_stat_info* shm_stat)
244 PR_LL("mem.cache.rrset", shm_stat->mem.rrset);
245 PR_LL("mem.cache.message", shm_stat->mem.msg);
246 PR_LL("mem.mod.iterator", shm_stat->mem.iter);
247 PR_LL("mem.mod.validator", shm_stat->mem.val);
248 PR_LL("mem.mod.respip", shm_stat->mem.respip);
250 PR_LL("mem.mod.subnet", shm_stat->mem.subnet);
253 PR_LL("mem.mod.ipsecmod", shm_stat->mem.ipsecmod);
256 PR_LL("mem.cache.dnscrypt_shared_secret",
257 shm_stat->mem.dnscrypt_shared_secret);
258 PR_LL("mem.cache.dnscrypt_nonce",
259 shm_stat->mem.dnscrypt_nonce);
263 /** print histogram */
264 static void print_hist(struct ub_stats_info* s)
266 struct timehist* hist;
268 hist = timehist_setup();
270 fatal_exit("out of memory");
271 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
272 for(i=0; i<hist->num; i++) {
273 printf("histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
274 (int)hist->buckets[i].lower.tv_sec,
275 (int)hist->buckets[i].lower.tv_usec,
276 (int)hist->buckets[i].upper.tv_sec,
277 (int)hist->buckets[i].upper.tv_usec,
278 (unsigned long)hist->buckets[i].count);
280 timehist_delete(hist);
283 /** print extended */
284 static void print_extended(struct ub_stats_info* s)
290 for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
291 if(inhibit_zero && s->svr.qtype[i] == 0)
293 sldns_wire2str_type_buf((uint16_t)i, nm, sizeof(nm));
294 PR_UL_SUB("num.query.type", nm, s->svr.qtype[i]);
296 if(!inhibit_zero || s->svr.qtype_big) {
297 PR_UL("num.query.type.other", s->svr.qtype_big);
301 for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
302 if(inhibit_zero && s->svr.qclass[i] == 0)
304 sldns_wire2str_class_buf((uint16_t)i, nm, sizeof(nm));
305 PR_UL_SUB("num.query.class", nm, s->svr.qclass[i]);
307 if(!inhibit_zero || s->svr.qclass_big) {
308 PR_UL("num.query.class.other", s->svr.qclass_big);
312 for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
313 if(inhibit_zero && s->svr.qopcode[i] == 0)
315 sldns_wire2str_opcode_buf(i, nm, sizeof(nm));
316 PR_UL_SUB("num.query.opcode", nm, s->svr.qopcode[i]);
320 PR_UL("num.query.tcp", s->svr.qtcp);
321 PR_UL("num.query.tcpout", s->svr.qtcp_outgoing);
322 PR_UL("num.query.ipv6", s->svr.qipv6);
325 PR_UL("num.query.flags.QR", s->svr.qbit_QR);
326 PR_UL("num.query.flags.AA", s->svr.qbit_AA);
327 PR_UL("num.query.flags.TC", s->svr.qbit_TC);
328 PR_UL("num.query.flags.RD", s->svr.qbit_RD);
329 PR_UL("num.query.flags.RA", s->svr.qbit_RA);
330 PR_UL("num.query.flags.Z", s->svr.qbit_Z);
331 PR_UL("num.query.flags.AD", s->svr.qbit_AD);
332 PR_UL("num.query.flags.CD", s->svr.qbit_CD);
333 PR_UL("num.query.edns.present", s->svr.qEDNS);
334 PR_UL("num.query.edns.DO", s->svr.qEDNS_DO);
337 for(i=0; i<UB_STATS_RCODE_NUM; i++) {
338 /* Always include RCODEs 0-5 */
339 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
341 sldns_wire2str_rcode_buf(i, nm, sizeof(nm));
342 PR_UL_SUB("num.answer.rcode", nm, s->svr.ans_rcode[i]);
344 if(!inhibit_zero || s->svr.ans_rcode_nodata) {
345 PR_UL("num.answer.rcode.nodata", s->svr.ans_rcode_nodata);
348 PR_UL("num.query.ratelimited", s->svr.queries_ratelimited);
350 PR_UL("num.answer.secure", s->svr.ans_secure);
351 PR_UL("num.answer.bogus", s->svr.ans_bogus);
352 PR_UL("num.rrset.bogus", s->svr.rrset_bogus);
353 PR_UL("num.query.aggressive.NOERROR", s->svr.num_neg_cache_noerror);
354 PR_UL("num.query.aggressive.NXDOMAIN", s->svr.num_neg_cache_nxdomain);
355 /* threat detection */
356 PR_UL("unwanted.queries", s->svr.unwanted_queries);
357 PR_UL("unwanted.replies", s->svr.unwanted_replies);
359 PR_UL("msg.cache.count", s->svr.msg_cache_count);
360 PR_UL("rrset.cache.count", s->svr.rrset_cache_count);
361 PR_UL("infra.cache.count", s->svr.infra_cache_count);
362 PR_UL("key.cache.count", s->svr.key_cache_count);
364 PR_UL("dnscrypt_shared_secret.cache.count",
365 s->svr.shared_secret_cache_count);
366 PR_UL("num.query.dnscrypt.shared_secret.cachemiss",
367 s->svr.num_query_dnscrypt_secret_missed_cache);
368 PR_UL("dnscrypt_nonce.cache.count", s->svr.nonce_cache_count);
369 PR_UL("num.query.dnscrypt.replay",
370 s->svr.num_query_dnscrypt_replay);
371 #endif /* USE_DNSCRYPT */
372 PR_UL("num.query.authzone.up", s->svr.num_query_authzone_up);
373 PR_UL("num.query.authzone.down", s->svr.num_query_authzone_down);
376 /** print statistics out of memory structures */
377 static void do_stats_shm(struct config_file* cfg, struct ub_stats_info* stats,
378 struct ub_shm_stat_info* shm_stat)
382 for(i=0; i<cfg->num_threads; i++) {
383 snprintf(nm, sizeof(nm), "thread%d", i);
384 pr_stats(nm, &stats[i+1]);
386 pr_stats("total", &stats[0]);
387 print_uptime(shm_stat);
388 if(cfg->stat_extended) {
391 print_extended(stats);
394 #endif /* HAVE_SHMGET */
396 /** print statistics from shm memory segment */
397 static void print_stats_shm(const char* cfgfile)
400 struct config_file* cfg;
401 struct ub_stats_info* stats;
402 struct ub_shm_stat_info* shm_stat;
405 if(!(cfg = config_create()))
406 fatal_exit("out of memory");
407 if(!config_read(cfg, cfgfile, NULL))
408 fatal_exit("could not read config file");
409 /* get shm segments */
410 id_ctl = shmget(cfg->shm_key, sizeof(int), SHM_R|SHM_W);
412 fatal_exit("shmget(%d): %s", cfg->shm_key, strerror(errno));
414 id_arr = shmget(cfg->shm_key+1, sizeof(int), SHM_R|SHM_W);
416 fatal_exit("shmget(%d): %s", cfg->shm_key+1, strerror(errno));
418 shm_stat = (struct ub_shm_stat_info*)shmat(id_ctl, NULL, 0);
419 if(shm_stat == (void*)-1) {
420 fatal_exit("shmat(%d): %s", id_ctl, strerror(errno));
422 stats = (struct ub_stats_info*)shmat(id_arr, NULL, 0);
423 if(stats == (void*)-1) {
424 fatal_exit("shmat(%d): %s", id_arr, strerror(errno));
427 /* print the stats */
428 do_stats_shm(cfg, stats, shm_stat);
436 #endif /* HAVE_SHMGET */
439 /** exit with ssl error */
440 static void ssl_err(const char* s)
442 fprintf(stderr, "error: %s\n", s);
443 ERR_print_errors_fp(stderr);
447 /** setup SSL context */
449 setup_ctx(struct config_file* cfg)
451 char* s_cert=NULL, *c_key=NULL, *c_cert=NULL;
454 if(cfg->remote_control_use_cert) {
455 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
456 c_key = fname_after_chroot(cfg->control_key_file, cfg, 1);
457 c_cert = fname_after_chroot(cfg->control_cert_file, cfg, 1);
458 if(!s_cert || !c_key || !c_cert)
459 fatal_exit("out of memory");
461 ctx = SSL_CTX_new(SSLv23_client_method());
463 ssl_err("could not allocate SSL_CTX pointer");
464 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)
466 ssl_err("could not set SSL_OP_NO_SSLv2");
467 if(cfg->remote_control_use_cert) {
468 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3)
470 ssl_err("could not set SSL_OP_NO_SSLv3");
471 if(!SSL_CTX_use_certificate_chain_file(ctx,c_cert) ||
472 !SSL_CTX_use_PrivateKey_file(ctx,c_key,SSL_FILETYPE_PEM)
473 || !SSL_CTX_check_private_key(ctx))
474 ssl_err("Error setting up SSL_CTX client key and cert");
475 if (SSL_CTX_load_verify_locations(ctx, s_cert, NULL) != 1)
476 ssl_err("Error setting up SSL_CTX verify, server cert");
477 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
483 /* Use ciphers that don't require authentication */
484 #if defined(SSL_OP_NO_TLSv1_3)
485 /* in openssl 1.1.1, negotiation code for tls 1.3 does
486 * not allow the unauthenticated aNULL and eNULL ciphers */
487 SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1_3);
489 #ifdef HAVE_SSL_CTX_SET_SECURITY_LEVEL
490 SSL_CTX_set_security_level(ctx, 0);
492 if(!SSL_CTX_set_cipher_list(ctx, "aNULL:eNULL"))
493 ssl_err("Error setting NULL cipher!");
498 /** contact the server with TCP connect */
500 contact_server(const char* svr, struct config_file* cfg, int statuscmd)
502 struct sockaddr_storage addr;
506 /* use svr or the first config entry */
508 if(cfg->control_ifs) {
509 svr = cfg->control_ifs->str;
510 } else if(cfg->do_ip4) {
515 /* config 0 addr (everything), means ask localhost */
516 if(strcmp(svr, "0.0.0.0") == 0)
518 else if(strcmp(svr, "::0") == 0 ||
519 strcmp(svr, "0::0") == 0 ||
520 strcmp(svr, "0::") == 0 ||
521 strcmp(svr, "::") == 0)
524 if(strchr(svr, '@')) {
525 if(!extstrtoaddr(svr, &addr, &addrlen))
526 fatal_exit("could not parse IP@port: %s", svr);
528 } else if(svr[0] == '/') {
529 struct sockaddr_un* usock = (struct sockaddr_un *) &addr;
530 usock->sun_family = AF_LOCAL;
531 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
532 usock->sun_len = (unsigned)sizeof(usock);
534 (void)strlcpy(usock->sun_path, svr, sizeof(usock->sun_path));
535 addrlen = (socklen_t)sizeof(struct sockaddr_un);
536 addrfamily = AF_LOCAL;
539 if(!ipstrtoaddr(svr, cfg->control_port, &addr, &addrlen))
540 fatal_exit("could not parse IP: %s", svr);
544 addrfamily = addr_is_ip6(&addr, addrlen)?AF_INET6:AF_INET;
545 fd = socket(addrfamily, SOCK_STREAM, 0);
548 fatal_exit("socket: %s", strerror(errno));
550 fatal_exit("socket: %s", wsa_strerror(WSAGetLastError()));
553 if(connect(fd, (struct sockaddr*)&addr, addrlen) < 0) {
555 log_err_addr("connect", strerror(errno), &addr, addrlen);
556 if(errno == ECONNREFUSED && statuscmd) {
557 printf("unbound is stopped\n");
561 log_err_addr("connect", wsa_strerror(WSAGetLastError()), &addr, addrlen);
562 if(WSAGetLastError() == WSAECONNREFUSED && statuscmd) {
563 printf("unbound is stopped\n");
572 /** setup SSL on the connection */
574 setup_ssl(SSL_CTX* ctx, int fd, struct config_file* cfg)
582 ssl_err("could not SSL_new");
583 SSL_set_connect_state(ssl);
584 (void)SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);
585 if(!SSL_set_fd(ssl, fd))
586 ssl_err("could not SSL_set_fd");
589 if( (r=SSL_do_handshake(ssl)) == 1)
591 r = SSL_get_error(ssl, r);
592 if(r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
593 ssl_err("SSL handshake failed");
594 /* wants to be called again */
597 /* check authenticity of server */
598 if(SSL_get_verify_result(ssl) != X509_V_OK)
599 ssl_err("SSL verification failed");
600 if(cfg->remote_control_use_cert) {
601 x = SSL_get_peer_certificate(ssl);
603 ssl_err("Server presented no peer certificate");
610 /** send stdin to server */
612 send_file(SSL* ssl, FILE* in, char* buf, size_t sz)
614 while(fgets(buf, (int)sz, in)) {
615 if(SSL_write(ssl, buf, (int)strlen(buf)) <= 0)
616 ssl_err("could not SSL_write contents");
620 /** send end-of-file marker to server */
624 char e[] = {0x04, 0x0a};
625 if(SSL_write(ssl, e, (int)sizeof(e)) <= 0)
626 ssl_err("could not SSL_write end-of-file marker");
629 /** send command and display result */
631 go_cmd(SSL* ssl, int quiet, int argc, char* argv[])
634 const char* space=" ";
635 const char* newline="\n";
636 int was_error = 0, first_line = 1;
639 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
640 if(SSL_write(ssl, pre, (int)strlen(pre)) <= 0)
641 ssl_err("could not SSL_write");
642 for(i=0; i<argc; i++) {
643 if(SSL_write(ssl, space, (int)strlen(space)) <= 0)
644 ssl_err("could not SSL_write");
645 if(SSL_write(ssl, argv[i], (int)strlen(argv[i])) <= 0)
646 ssl_err("could not SSL_write");
648 if(SSL_write(ssl, newline, (int)strlen(newline)) <= 0)
649 ssl_err("could not SSL_write");
651 if(argc == 1 && strcmp(argv[0], "load_cache") == 0) {
652 send_file(ssl, stdin, buf, sizeof(buf));
654 else if(argc == 1 && (strcmp(argv[0], "local_zones") == 0 ||
655 strcmp(argv[0], "local_zones_remove") == 0 ||
656 strcmp(argv[0], "local_datas") == 0 ||
657 strcmp(argv[0], "local_datas_remove") == 0)) {
658 send_file(ssl, stdin, buf, sizeof(buf));
664 if((r = SSL_read(ssl, buf, (int)sizeof(buf)-1)) <= 0) {
665 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
669 ssl_err("could not SSL_read");
672 if(first_line && strncmp(buf, "error", 5) == 0) {
683 /** go ahead and read config, contact server and perform command and display */
685 go(const char* cfgfile, char* svr, int quiet, int argc, char* argv[])
687 struct config_file* cfg;
693 if(!(cfg = config_create()))
694 fatal_exit("out of memory");
695 if(!config_read(cfg, cfgfile, NULL))
696 fatal_exit("could not read config file");
697 if(!cfg->remote_control_enable)
698 log_warn("control-enable is 'no' in the config file.");
700 w_config_adjust_directory(cfg);
702 ctx = setup_ctx(cfg);
705 fd = contact_server(svr, cfg, argc>0&&strcmp(argv[0],"status")==0);
706 ssl = setup_ssl(ctx, fd, cfg);
709 ret = go_cmd(ssl, quiet, argc, argv);
722 /** getopt global, in case header files fail to declare it. */
724 /** getopt global, in case header files fail to declare it. */
727 /** Main routine for unbound-control */
728 int main(int argc, char* argv[])
732 const char* cfgfile = CONFIGFILE;
738 #ifdef USE_THREAD_DEBUG
739 /* stop the file output from unbound-control, overwrites the servers */
740 extern int check_locking_order;
741 check_locking_order = 0;
742 #endif /* USE_THREAD_DEBUG */
743 log_ident_set("unbound-control");
744 log_init(NULL, 0, NULL);
747 /* use registry config file in preference to compiletime location */
748 if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile")))
749 cfgfile = CONFIGFILE;
751 /* parse the options */
752 while( (c=getopt(argc, argv, "c:s:qh")) != -1) {
773 if(argc >= 1 && strcmp(argv[0], "start")==0) {
774 if(execlp("unbound", "unbound", "-c", cfgfile,
776 fatal_exit("could not exec unbound: %s",
780 if(argc >= 1 && strcmp(argv[0], "stats_shm")==0) {
781 print_stats_shm(cfgfile);
786 if((r = WSAStartup(MAKEWORD(2,2), &wsa_data)) != 0)
787 fatal_exit("WSAStartup failed: %s", wsa_strerror(r));
790 #ifdef HAVE_ERR_LOAD_CRYPTO_STRINGS
791 ERR_load_crypto_strings();
793 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
794 ERR_load_SSL_strings();
796 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_CRYPTO)
797 OpenSSL_add_all_algorithms();
799 OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS
800 | OPENSSL_INIT_ADD_ALL_DIGESTS
801 | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
803 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
804 (void)SSL_library_init();
806 (void)OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
811 unsigned char buf[256];
812 unsigned int seed=(unsigned)time(NULL) ^ (unsigned)getpid();
813 unsigned int v = seed;
815 for(i=0; i<256/sizeof(v); i++) {
816 memmove(buf+i*sizeof(v), &v, sizeof(v));
817 v = v*seed + (unsigned int)i;
820 log_warn("no entropy, seeding openssl PRNG with time\n");
823 ret = go(cfgfile, svr, quiet, argc, argv);