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"
65 #include "services/rpz.h"
77 static void usage(void) ATTR_NORETURN;
78 static void ssl_err(const char* s) ATTR_NORETURN;
79 static void ssl_path_err(const char* s, const char *path) ATTR_NORETURN;
81 /** Give unbound-control usage, and exit (1). */
85 printf("Usage: local-unbound-control [options] command\n");
86 printf(" Remote control utility for unbound server.\n");
88 printf(" -c file config file, default is %s\n", CONFIGFILE);
89 printf(" -s ip[@port] server address, if omitted config is used.\n");
90 printf(" -q quiet (don't print anything if it works ok).\n");
91 printf(" -h show this usage help.\n");
92 printf("Commands:\n");
93 printf(" start start server; runs unbound(8)\n");
94 printf(" stop stops the server\n");
95 printf(" reload reloads the server\n");
96 printf(" (this flushes data, stats, requestlist)\n");
97 printf(" stats print statistics\n");
98 printf(" stats_noreset peek at statistics\n");
100 printf(" stats_shm print statistics using shm\n");
102 printf(" status display status of server\n");
103 printf(" verbosity <number> change logging detail\n");
104 printf(" log_reopen close and open the logfile\n");
105 printf(" local_zone <name> <type> add new local zone\n");
106 printf(" local_zone_remove <name> remove local zone and its contents\n");
107 printf(" local_data <RR data...> add local data, for example\n");
108 printf(" local_data www.example.com A 192.0.2.1\n");
109 printf(" local_data_remove <name> remove local RR data from name\n");
110 printf(" local_zones, local_zones_remove, local_datas, local_datas_remove\n");
111 printf(" same, but read list from stdin\n");
112 printf(" (one entry per line).\n");
113 printf(" dump_cache print cache to stdout\n");
114 printf(" load_cache load cache from stdin\n");
115 printf(" lookup <name> print nameservers for name\n");
116 printf(" flush <name> flushes common types for name from cache\n");
117 printf(" types: A, AAAA, MX, PTR, NS,\n");
118 printf(" SOA, CNAME, DNAME, SRV, NAPTR\n");
119 printf(" flush_type <name> <type> flush name, type from cache\n");
120 printf(" flush_zone <name> flush everything at or under name\n");
121 printf(" from rr and dnssec caches\n");
122 printf(" flush_bogus flush all bogus data\n");
123 printf(" flush_negative flush all negative data\n");
124 printf(" flush_stats flush statistics, make zero\n");
125 printf(" flush_requestlist drop queries that are worked on\n");
126 printf(" dump_requestlist show what is worked on by first thread\n");
127 printf(" flush_infra [all | ip] remove ping, edns for one IP or all\n");
128 printf(" dump_infra show ping and edns entries\n");
129 printf(" set_option opt: val set option to value, no reload\n");
130 printf(" get_option opt get option value\n");
131 printf(" list_stubs list stub-zones and root hints in use\n");
132 printf(" list_forwards list forward-zones in use\n");
133 printf(" list_insecure list domain-insecure zones\n");
134 printf(" list_local_zones list local-zones in use\n");
135 printf(" list_local_data list local-data RRs in use\n");
136 printf(" insecure_add zone add domain-insecure zone\n");
137 printf(" insecure_remove zone remove domain-insecure zone\n");
138 printf(" forward_add [+i] zone addr.. add forward-zone with servers\n");
139 printf(" forward_remove [+i] zone remove forward zone\n");
140 printf(" stub_add [+ip] zone addr.. add stub-zone with servers\n");
141 printf(" stub_remove [+i] zone remove stub zone\n");
142 printf(" +i also do dnssec insecure point\n");
143 printf(" +p set stub to use priming\n");
144 printf(" forward [off | addr ...] without arg show forward setup\n");
145 printf(" or off to turn off root forwarding\n");
146 printf(" or give list of ip addresses\n");
147 printf(" ratelimit_list [+a] list ratelimited domains\n");
148 printf(" ip_ratelimit_list [+a] list ratelimited ip addresses\n");
149 printf(" +a list all, also not ratelimited\n");
150 printf(" list_auth_zones list auth zones\n");
151 printf(" auth_zone_reload zone reload auth zone from zonefile\n");
152 printf(" auth_zone_transfer zone transfer auth zone from master\n");
153 printf(" view_list_local_zones view list local-zones in view\n");
154 printf(" view_list_local_data view list local-data RRs in view\n");
155 printf(" view_local_zone view name type add local-zone in view\n");
156 printf(" view_local_zone_remove view name remove local-zone in view\n");
157 printf(" view_local_data view RR... add local-data in view\n");
158 printf(" view_local_datas view add list of local-data to view\n");
159 printf(" one entry per line read from stdin\n");
160 printf(" view_local_data_remove view name remove local-data in view\n");
161 printf(" view_local_datas_remove view remove list of local-data from view\n");
162 printf(" one entry per line read from stdin\n");
163 printf("Version %s\n", PACKAGE_VERSION);
164 printf("BSD licensed, see LICENSE in source package for details.\n");
165 printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
170 /** what to put on statistics lines between var and value, ": " or "=" */
172 /** if true, inhibits a lot of =0 lines from the stats output */
173 static const int inhibit_zero = 1;
174 /** divide sum of timers to get average */
176 timeval_divide(struct timeval* avg, const struct timeval* sum, long long d)
185 avg->tv_sec = sum->tv_sec / d;
186 avg->tv_usec = sum->tv_usec / d;
187 /* handle fraction from seconds divide */
188 leftover = sum->tv_sec - avg->tv_sec*d;
189 avg->tv_usec += (leftover*1000000)/d;
193 /** print unsigned long stats value */
194 #define PR_UL_NM(str, var) printf("%s."str SQ"%lu\n", nm, (unsigned long)(var));
195 #define PR_UL(str, var) printf(str SQ"%lu\n", (unsigned long)(var));
196 #define PR_UL_SUB(str, nm, var) printf(str".%s"SQ"%lu\n", nm, (unsigned long)(var));
197 #define PR_TIMEVAL(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
198 (long long)var.tv_sec, (int)var.tv_usec);
199 #define PR_STATSTIME(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
200 (long long)var ## _sec, (int)var ## _usec);
201 #define PR_LL(str, var) printf(str SQ ARG_LL"d\n", (long long)(var));
203 /** print stat block */
204 static void pr_stats(const char* nm, struct ub_stats_info* s)
206 struct timeval sumwait, avg;
207 PR_UL_NM("num.queries", s->svr.num_queries);
208 PR_UL_NM("num.queries_ip_ratelimited",
209 s->svr.num_queries_ip_ratelimited);
210 PR_UL_NM("num.cachehits",
211 s->svr.num_queries - s->svr.num_queries_missed_cache);
212 PR_UL_NM("num.cachemiss", s->svr.num_queries_missed_cache);
213 PR_UL_NM("num.prefetch", s->svr.num_queries_prefetch);
214 PR_UL_NM("num.expired", s->svr.ans_expired);
215 PR_UL_NM("num.recursivereplies", s->mesh_replies_sent);
217 PR_UL_NM("num.dnscrypt.crypted", s->svr.num_query_dnscrypt_crypted);
218 PR_UL_NM("num.dnscrypt.cert", s->svr.num_query_dnscrypt_cert);
219 PR_UL_NM("num.dnscrypt.cleartext", s->svr.num_query_dnscrypt_cleartext);
220 PR_UL_NM("num.dnscrypt.malformed",
221 s->svr.num_query_dnscrypt_crypted_malformed);
222 #endif /* USE_DNSCRYPT */
223 printf("%s.requestlist.avg"SQ"%g\n", nm,
224 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
225 (double)s->svr.sum_query_list_size/
226 (double)(s->svr.num_queries_missed_cache+
227 s->svr.num_queries_prefetch) : 0.0);
228 PR_UL_NM("requestlist.max", s->svr.max_query_list_size);
229 PR_UL_NM("requestlist.overwritten", s->mesh_jostled);
230 PR_UL_NM("requestlist.exceeded", s->mesh_dropped);
231 PR_UL_NM("requestlist.current.all", s->mesh_num_states);
232 PR_UL_NM("requestlist.current.user", s->mesh_num_reply_states);
234 sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
235 sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
237 timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
239 PR_TIMEVAL("recursion.time.avg", avg);
240 printf("%s.recursion.time.median"SQ"%g\n", nm, s->mesh_time_median);
241 PR_UL_NM("tcpusage", s->svr.tcp_accept_usage);
245 static void print_uptime(struct ub_shm_stat_info* shm_stat)
247 PR_STATSTIME("time.now", shm_stat->time.now);
248 PR_STATSTIME("time.up", shm_stat->time.up);
249 PR_STATSTIME("time.elapsed", shm_stat->time.elapsed);
252 /** print memory usage */
253 static void print_mem(struct ub_shm_stat_info* shm_stat,
254 struct ub_stats_info* s)
256 PR_LL("mem.cache.rrset", shm_stat->mem.rrset);
257 PR_LL("mem.cache.message", shm_stat->mem.msg);
258 PR_LL("mem.mod.iterator", shm_stat->mem.iter);
259 PR_LL("mem.mod.validator", shm_stat->mem.val);
260 PR_LL("mem.mod.respip", shm_stat->mem.respip);
262 PR_LL("mem.mod.subnet", shm_stat->mem.subnet);
265 PR_LL("mem.mod.ipsecmod", shm_stat->mem.ipsecmod);
268 PR_LL("mem.cache.dnscrypt_shared_secret",
269 shm_stat->mem.dnscrypt_shared_secret);
270 PR_LL("mem.cache.dnscrypt_nonce",
271 shm_stat->mem.dnscrypt_nonce);
273 PR_LL("mem.streamwait", s->svr.mem_stream_wait);
276 /** print histogram */
277 static void print_hist(struct ub_stats_info* s)
279 struct timehist* hist;
281 hist = timehist_setup();
283 fatal_exit("out of memory");
284 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
285 for(i=0; i<hist->num; i++) {
286 printf("histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
287 (int)hist->buckets[i].lower.tv_sec,
288 (int)hist->buckets[i].lower.tv_usec,
289 (int)hist->buckets[i].upper.tv_sec,
290 (int)hist->buckets[i].upper.tv_usec,
291 (unsigned long)hist->buckets[i].count);
293 timehist_delete(hist);
296 /** print extended */
297 static void print_extended(struct ub_stats_info* s)
303 for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
304 if(inhibit_zero && s->svr.qtype[i] == 0)
306 sldns_wire2str_type_buf((uint16_t)i, nm, sizeof(nm));
307 PR_UL_SUB("num.query.type", nm, s->svr.qtype[i]);
309 if(!inhibit_zero || s->svr.qtype_big) {
310 PR_UL("num.query.type.other", s->svr.qtype_big);
314 for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
315 if(inhibit_zero && s->svr.qclass[i] == 0)
317 sldns_wire2str_class_buf((uint16_t)i, nm, sizeof(nm));
318 PR_UL_SUB("num.query.class", nm, s->svr.qclass[i]);
320 if(!inhibit_zero || s->svr.qclass_big) {
321 PR_UL("num.query.class.other", s->svr.qclass_big);
325 for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
326 if(inhibit_zero && s->svr.qopcode[i] == 0)
328 sldns_wire2str_opcode_buf(i, nm, sizeof(nm));
329 PR_UL_SUB("num.query.opcode", nm, s->svr.qopcode[i]);
333 PR_UL("num.query.tcp", s->svr.qtcp);
334 PR_UL("num.query.tcpout", s->svr.qtcp_outgoing);
335 PR_UL("num.query.tls", s->svr.qtls);
336 PR_UL("num.query.tls_resume", s->svr.qtls_resume);
337 PR_UL("num.query.ipv6", s->svr.qipv6);
340 PR_UL("num.query.flags.QR", s->svr.qbit_QR);
341 PR_UL("num.query.flags.AA", s->svr.qbit_AA);
342 PR_UL("num.query.flags.TC", s->svr.qbit_TC);
343 PR_UL("num.query.flags.RD", s->svr.qbit_RD);
344 PR_UL("num.query.flags.RA", s->svr.qbit_RA);
345 PR_UL("num.query.flags.Z", s->svr.qbit_Z);
346 PR_UL("num.query.flags.AD", s->svr.qbit_AD);
347 PR_UL("num.query.flags.CD", s->svr.qbit_CD);
348 PR_UL("num.query.edns.present", s->svr.qEDNS);
349 PR_UL("num.query.edns.DO", s->svr.qEDNS_DO);
352 for(i=0; i<UB_STATS_RCODE_NUM; i++) {
353 /* Always include RCODEs 0-5 */
354 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
356 sldns_wire2str_rcode_buf(i, nm, sizeof(nm));
357 PR_UL_SUB("num.answer.rcode", nm, s->svr.ans_rcode[i]);
359 if(!inhibit_zero || s->svr.ans_rcode_nodata) {
360 PR_UL("num.answer.rcode.nodata", s->svr.ans_rcode_nodata);
363 PR_UL("num.query.ratelimited", s->svr.queries_ratelimited);
365 PR_UL("num.answer.secure", s->svr.ans_secure);
366 PR_UL("num.answer.bogus", s->svr.ans_bogus);
367 PR_UL("num.rrset.bogus", s->svr.rrset_bogus);
368 PR_UL("num.query.aggressive.NOERROR", s->svr.num_neg_cache_noerror);
369 PR_UL("num.query.aggressive.NXDOMAIN", s->svr.num_neg_cache_nxdomain);
370 /* threat detection */
371 PR_UL("unwanted.queries", s->svr.unwanted_queries);
372 PR_UL("unwanted.replies", s->svr.unwanted_replies);
374 PR_UL("msg.cache.count", s->svr.msg_cache_count);
375 PR_UL("rrset.cache.count", s->svr.rrset_cache_count);
376 PR_UL("infra.cache.count", s->svr.infra_cache_count);
377 PR_UL("key.cache.count", s->svr.key_cache_count);
378 /* applied RPZ actions */
379 for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
380 if(i == RPZ_NO_OVERRIDE_ACTION)
382 if(inhibit_zero && s->svr.rpz_action[i] == 0)
384 PR_UL_SUB("num.rpz.action", rpz_action_to_string(i), s->svr.rpz_action[i]);
387 PR_UL("dnscrypt_shared_secret.cache.count",
388 s->svr.shared_secret_cache_count);
389 PR_UL("num.query.dnscrypt.shared_secret.cachemiss",
390 s->svr.num_query_dnscrypt_secret_missed_cache);
391 PR_UL("dnscrypt_nonce.cache.count", s->svr.nonce_cache_count);
392 PR_UL("num.query.dnscrypt.replay",
393 s->svr.num_query_dnscrypt_replay);
394 #endif /* USE_DNSCRYPT */
395 PR_UL("num.query.authzone.up", s->svr.num_query_authzone_up);
396 PR_UL("num.query.authzone.down", s->svr.num_query_authzone_down);
398 PR_UL("num.query.subnet", s->svr.num_query_subnet);
399 PR_UL("num.query.subnet_cache", s->svr.num_query_subnet_cache);
403 /** print statistics out of memory structures */
404 static void do_stats_shm(struct config_file* cfg, struct ub_stats_info* stats,
405 struct ub_shm_stat_info* shm_stat)
409 for(i=0; i<cfg->num_threads; i++) {
410 snprintf(nm, sizeof(nm), "thread%d", i);
411 pr_stats(nm, &stats[i+1]);
413 pr_stats("total", &stats[0]);
414 print_uptime(shm_stat);
415 if(cfg->stat_extended) {
416 print_mem(shm_stat, &stats[0]);
418 print_extended(stats);
421 #endif /* HAVE_SHMGET */
423 /** print statistics from shm memory segment */
424 static void print_stats_shm(const char* cfgfile)
427 struct config_file* cfg;
428 struct ub_stats_info* stats;
429 struct ub_shm_stat_info* shm_stat;
432 if(!(cfg = config_create()))
433 fatal_exit("out of memory");
434 if(!config_read(cfg, cfgfile, NULL))
435 fatal_exit("could not read config file");
436 /* get shm segments */
437 id_ctl = shmget(cfg->shm_key, sizeof(int), SHM_R);
439 fatal_exit("shmget(%d): %s", cfg->shm_key, strerror(errno));
441 id_arr = shmget(cfg->shm_key+1, sizeof(int), SHM_R);
443 fatal_exit("shmget(%d): %s", cfg->shm_key+1, strerror(errno));
445 shm_stat = (struct ub_shm_stat_info*)shmat(id_ctl, NULL, SHM_RDONLY);
446 if(shm_stat == (void*)-1) {
447 fatal_exit("shmat(%d): %s", id_ctl, strerror(errno));
449 stats = (struct ub_stats_info*)shmat(id_arr, NULL, SHM_RDONLY);
450 if(stats == (void*)-1) {
451 fatal_exit("shmat(%d): %s", id_arr, strerror(errno));
454 /* print the stats */
455 do_stats_shm(cfg, stats, shm_stat);
463 #endif /* HAVE_SHMGET */
466 /** exit with ssl error */
467 static void ssl_err(const char* s)
469 fprintf(stderr, "error: %s\n", s);
470 ERR_print_errors_fp(stderr);
474 /** exit with ssl error related to a file path */
475 static void ssl_path_err(const char* s, const char *path)
478 err = ERR_peek_error();
479 if (ERR_GET_LIB(err) == ERR_LIB_SYS &&
480 (ERR_GET_FUNC(err) == SYS_F_FOPEN ||
481 ERR_GET_FUNC(err) == SYS_F_FREAD) ) {
482 fprintf(stderr, "error: %s\n%s: %s\n",
483 s, path, ERR_reason_error_string(err));
490 /** setup SSL context */
492 setup_ctx(struct config_file* cfg)
494 char* s_cert=NULL, *c_key=NULL, *c_cert=NULL;
497 if(!(options_remote_is_address(cfg) && cfg->control_use_cert))
499 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
500 c_key = fname_after_chroot(cfg->control_key_file, cfg, 1);
501 c_cert = fname_after_chroot(cfg->control_cert_file, cfg, 1);
502 if(!s_cert || !c_key || !c_cert)
503 fatal_exit("out of memory");
504 ctx = SSL_CTX_new(SSLv23_client_method());
506 ssl_err("could not allocate SSL_CTX pointer");
507 #if SSL_OP_NO_SSLv2 != 0
508 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)
510 ssl_err("could not set SSL_OP_NO_SSLv2");
512 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3)
514 ssl_err("could not set SSL_OP_NO_SSLv3");
515 #if defined(SSL_OP_NO_RENEGOTIATION)
516 /* disable client renegotiation */
517 if((SSL_CTX_set_options(ctx, SSL_OP_NO_RENEGOTIATION) &
518 SSL_OP_NO_RENEGOTIATION) != SSL_OP_NO_RENEGOTIATION)
519 ssl_err("could not set SSL_OP_NO_RENEGOTIATION");
521 if(!SSL_CTX_use_certificate_chain_file(ctx,c_cert))
522 ssl_path_err("Error setting up SSL_CTX client cert", c_cert);
523 if (!SSL_CTX_use_PrivateKey_file(ctx,c_key,SSL_FILETYPE_PEM))
524 ssl_path_err("Error setting up SSL_CTX client key", c_key);
525 if (!SSL_CTX_check_private_key(ctx))
526 ssl_err("Error setting up SSL_CTX client key");
527 if (SSL_CTX_load_verify_locations(ctx, s_cert, NULL) != 1)
528 ssl_path_err("Error setting up SSL_CTX verify, server cert",
530 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
538 /** contact the server with TCP connect */
540 contact_server(const char* svr, struct config_file* cfg, int statuscmd)
542 struct sockaddr_storage addr;
544 int addrfamily = 0, proto = IPPROTO_TCP;
546 /* use svr or the first config entry */
548 if(cfg->control_ifs.first) {
549 svr = cfg->control_ifs.first->str;
550 } else if(cfg->do_ip4) {
555 /* config 0 addr (everything), means ask localhost */
556 if(strcmp(svr, "0.0.0.0") == 0)
558 else if(strcmp(svr, "::0") == 0 ||
559 strcmp(svr, "0::0") == 0 ||
560 strcmp(svr, "0::") == 0 ||
561 strcmp(svr, "::") == 0)
564 if(strchr(svr, '@')) {
565 if(!extstrtoaddr(svr, &addr, &addrlen))
566 fatal_exit("could not parse IP@port: %s", svr);
568 } else if(svr[0] == '/') {
569 struct sockaddr_un* usock = (struct sockaddr_un *) &addr;
570 usock->sun_family = AF_LOCAL;
571 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
572 usock->sun_len = (unsigned)sizeof(usock);
574 (void)strlcpy(usock->sun_path, svr, sizeof(usock->sun_path));
575 addrlen = (socklen_t)sizeof(struct sockaddr_un);
576 addrfamily = AF_LOCAL;
581 if(!ipstrtoaddr(svr, cfg->control_port, &addr, &addrlen))
582 fatal_exit("could not parse IP: %s", svr);
586 addrfamily = addr_is_ip6(&addr, addrlen)?PF_INET6:PF_INET;
587 fd = socket(addrfamily, SOCK_STREAM, proto);
590 fatal_exit("socket: %s", strerror(errno));
592 fatal_exit("socket: %s", wsa_strerror(WSAGetLastError()));
595 if(connect(fd, (struct sockaddr*)&addr, addrlen) < 0) {
598 if(!useport) log_err("connect: %s for %s", strerror(err), svr);
599 else log_err_addr("connect", strerror(err), &addr, addrlen);
600 if(err == ECONNREFUSED && statuscmd) {
601 printf("unbound is stopped\n");
605 int wsaerr = WSAGetLastError();
606 if(!useport) log_err("connect: %s for %s", wsa_strerror(wsaerr), svr);
607 else log_err_addr("connect", wsa_strerror(wsaerr), &addr, addrlen);
608 if(wsaerr == WSAECONNREFUSED && statuscmd) {
609 printf("unbound is stopped\n");
618 /** setup SSL on the connection */
620 setup_ssl(SSL_CTX* ctx, int fd)
626 if(!ctx) return NULL;
629 ssl_err("could not SSL_new");
630 SSL_set_connect_state(ssl);
631 (void)SSL_set_mode(ssl, (long)SSL_MODE_AUTO_RETRY);
632 if(!SSL_set_fd(ssl, fd))
633 ssl_err("could not SSL_set_fd");
636 if( (r=SSL_do_handshake(ssl)) == 1)
638 r = SSL_get_error(ssl, r);
639 if(r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
640 ssl_err("SSL handshake failed");
641 /* wants to be called again */
644 /* check authenticity of server */
645 if(SSL_get_verify_result(ssl) != X509_V_OK)
646 ssl_err("SSL verification failed");
647 x = SSL_get_peer_certificate(ssl);
649 ssl_err("Server presented no peer certificate");
655 /** read from ssl or fd, fatalexit on error, 0 EOF, 1 success */
657 remote_read(SSL* ssl, int fd, char* buf, size_t len)
662 if((r = SSL_read(ssl, buf, (int)len-1)) <= 0) {
663 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
667 ssl_err("could not SSL_read");
671 ssize_t rr = recv(fd, buf, len-1, 0);
678 fatal_exit("could not recv: %s", strerror(errno));
680 fatal_exit("could not recv: %s", wsa_strerror(WSAGetLastError()));
688 /** write to ssl or fd, fatalexit on error */
690 remote_write(SSL* ssl, int fd, const char* buf, size_t len)
693 if(SSL_write(ssl, buf, (int)len) <= 0)
694 ssl_err("could not SSL_write");
696 if(send(fd, buf, len, 0) < (ssize_t)len) {
698 fatal_exit("could not send: %s", strerror(errno));
700 fatal_exit("could not send: %s", wsa_strerror(WSAGetLastError()));
706 /** check args, to see if too many args. Because when a file is sent it
707 * would wait for the terminal, and we can check for too many arguments,
708 * eg. user put arguments on the commandline. */
710 check_args_for_listcmd(int argc, char* argv[])
712 if(argc >= 1 && (strcmp(argv[0], "local_zones") == 0 ||
713 strcmp(argv[0], "local_zones_remove") == 0 ||
714 strcmp(argv[0], "local_datas") == 0 ||
715 strcmp(argv[0], "local_datas_remove") == 0) &&
717 fatal_exit("too many arguments for command '%s', "
718 "content is piped in from stdin", argv[0]);
720 if(argc >= 1 && (strcmp(argv[0], "view_local_datas") == 0 ||
721 strcmp(argv[0], "view_local_datas_remove") == 0) &&
723 fatal_exit("too many arguments for command '%s', "
724 "content is piped in from stdin", argv[0]);
728 /** send stdin to server */
730 send_file(SSL* ssl, int fd, FILE* in, char* buf, size_t sz)
732 while(fgets(buf, (int)sz, in)) {
733 remote_write(ssl, fd, buf, strlen(buf));
737 /** send end-of-file marker to server */
739 send_eof(SSL* ssl, int fd)
741 char e[] = {0x04, 0x0a};
742 remote_write(ssl, fd, e, sizeof(e));
745 /** send command and display result */
747 go_cmd(SSL* ssl, int fd, int quiet, int argc, char* argv[])
750 const char* space=" ";
751 const char* newline="\n";
752 int was_error = 0, first_line = 1;
755 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
756 remote_write(ssl, fd, pre, strlen(pre));
757 for(i=0; i<argc; i++) {
758 remote_write(ssl, fd, space, strlen(space));
759 remote_write(ssl, fd, argv[i], strlen(argv[i]));
761 remote_write(ssl, fd, newline, strlen(newline));
763 if(argc == 1 && strcmp(argv[0], "load_cache") == 0) {
764 send_file(ssl, fd, stdin, buf, sizeof(buf));
766 else if(argc >= 1 && (strcmp(argv[0], "local_zones") == 0 ||
767 strcmp(argv[0], "local_zones_remove") == 0 ||
768 strcmp(argv[0], "local_datas") == 0 ||
769 strcmp(argv[0], "view_local_datas") == 0 ||
770 strcmp(argv[0], "local_datas_remove") == 0 ||
771 strcmp(argv[0], "view_local_datas_remove") == 0)) {
772 send_file(ssl, fd, stdin, buf, sizeof(buf));
777 if(remote_read(ssl, fd, buf, sizeof(buf)) == 0) {
780 if(first_line && strncmp(buf, "error", 5) == 0) {
791 /** go ahead and read config, contact server and perform command and display */
793 go(const char* cfgfile, char* svr, int quiet, int argc, char* argv[])
795 struct config_file* cfg;
801 if(!(cfg = config_create()))
802 fatal_exit("out of memory");
803 if(!config_read(cfg, cfgfile, NULL))
804 fatal_exit("could not read config file");
805 if(!cfg->remote_control_enable)
806 log_warn("control-enable is 'no' in the config file.");
808 w_config_adjust_directory(cfg);
810 ctx = setup_ctx(cfg);
813 fd = contact_server(svr, cfg, argc>0&&strcmp(argv[0],"status")==0);
814 ssl = setup_ssl(ctx, fd);
817 ret = go_cmd(ssl, fd, quiet, argc, argv);
819 if(ssl) SSL_free(ssl);
825 if(ctx) SSL_CTX_free(ctx);
830 /** getopt global, in case header files fail to declare it. */
832 /** getopt global, in case header files fail to declare it. */
835 /** Main routine for unbound-control */
836 int main(int argc, char* argv[])
840 const char* cfgfile = CONFIGFILE;
846 #ifdef USE_THREAD_DEBUG
847 /* stop the file output from unbound-control, overwrites the servers */
848 extern int check_locking_order;
849 check_locking_order = 0;
850 #endif /* USE_THREAD_DEBUG */
851 log_ident_set("unbound-control");
852 log_init(NULL, 0, NULL);
855 /* use registry config file in preference to compiletime location */
856 if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile")))
857 cfgfile = CONFIGFILE;
859 /* parse the options */
860 while( (c=getopt(argc, argv, "c:s:qh")) != -1) {
881 if(argc >= 1 && strcmp(argv[0], "start")==0) {
882 if(execlp("unbound", "unbound", "-c", cfgfile,
884 fatal_exit("could not exec unbound: %s",
888 if(argc >= 1 && strcmp(argv[0], "stats_shm")==0) {
889 print_stats_shm(cfgfile);
892 check_args_for_listcmd(argc, argv);
895 if((r = WSAStartup(MAKEWORD(2,2), &wsa_data)) != 0)
896 fatal_exit("WSAStartup failed: %s", wsa_strerror(r));
899 #ifdef HAVE_ERR_LOAD_CRYPTO_STRINGS
900 ERR_load_crypto_strings();
902 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
903 ERR_load_SSL_strings();
905 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_CRYPTO)
907 OpenSSL_add_all_algorithms();
910 OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS
911 | OPENSSL_INIT_ADD_ALL_DIGESTS
912 | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
914 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
915 (void)SSL_library_init();
917 (void)OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
922 unsigned char buf[256];
923 unsigned int seed=(unsigned)time(NULL) ^ (unsigned)getpid();
924 unsigned int v = seed;
926 for(i=0; i<256/sizeof(v); i++) {
927 memmove(buf+i*sizeof(v), &v, sizeof(v));
928 v = v*seed + (unsigned int)i;
931 log_warn("no entropy, seeding openssl PRNG with time\n");
934 ret = go(cfgfile, svr, quiet, argc, argv);