1 /*
2 * smallapp/unbound-control.c - remote control utility for unbound.
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 * 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.
42 */
43
44 #include "config.h"
45 #ifdef HAVE_GETOPT_H
46 #include <getopt.h>
47 #endif
48 #ifdef HAVE_OPENSSL_SSL_H
49 #include <openssl/ssl.h>
50 #endif
51 #ifdef HAVE_OPENSSL_ERR_H
52 #include <openssl/err.h>
53 #endif
54 #ifdef HAVE_OPENSSL_RAND_H
55 #include <openssl/rand.h>
56 #endif
57 #include "util/log.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 "util/timeval_func.h"
63 #include "daemon/stats.h"
64 #include "sldns/wire2str.h"
65 #include "sldns/pkthdr.h"
66 #include "services/rpz.h"
67 #include "services/listen_dnsport.h"
68
69 #ifdef HAVE_SYS_IPC_H
70 #include "sys/ipc.h"
71 #endif
72 #ifdef HAVE_SYS_SHM_H
73 #include "sys/shm.h"
74 #endif
75 #ifdef HAVE_SYS_UN_H
76 #include <sys/un.h>
77 #endif
78
79 #ifdef HAVE_TARGETCONDITIONALS_H
80 #include <TargetConditionals.h>
81 #endif
82
83 static void usage(void) ATTR_NORETURN;
84 static void ssl_err(const char* s) ATTR_NORETURN;
85 static void ssl_path_err(const char* s, const char *path) ATTR_NORETURN;
86
87 /** timeout to wait for connection over stream, in msec */
88 #define UNBOUND_CONTROL_CONNECT_TIMEOUT 5000
89
90 /** Give unbound-control usage, and exit (1). */
91 static void
usage(void)92 usage(void)
93 {
94 printf("Usage: local-unbound-control [options] command\n");
95 printf(" Remote control utility for unbound server.\n");
96 printf("Options:\n");
97 printf(" -c file config file, default is %s\n", CONFIGFILE);
98 printf(" -s ip[@port] server address, if omitted config is used.\n");
99 printf(" -q quiet (don't print anything if it works ok).\n");
100 printf(" -h show this usage help.\n");
101 printf("Commands:\n");
102 printf(" start start server; runs unbound(8)\n");
103 printf(" stop stops the server\n");
104 printf(" reload reloads the server\n");
105 printf(" (this flushes data, stats, requestlist)\n");
106 printf(" reload_keep_cache reloads the server but tries to\n");
107 printf(" keep the RRset and message cache\n");
108 printf(" if (re)configuration allows for it.\n");
109 printf(" That means the caches sizes and\n");
110 printf(" the number of threads must not\n");
111 printf(" change between reloads.\n");
112 printf(" fast_reload [+dpv] reloads the server but only briefly stops\n");
113 printf(" server processing, keeps cache, and changes\n");
114 printf(" most options; check unbound-control(8).\n");
115 printf(" +d drops running queries to keep consistency\n");
116 printf(" on changed options while reloading.\n");
117 printf(" +p does not pause threads for even faster\n");
118 printf(" reload but less options are supported\n");
119 printf(" ; check unbound-control(8).\n");
120 printf(" +v verbose output, it will include duration needed.\n");
121 printf(" +vv more verbose output, it will include memory needed.\n");
122 printf(" stats print statistics\n");
123 printf(" stats_noreset peek at statistics\n");
124 #ifdef HAVE_SHMGET
125 printf(" stats_shm print statistics using shm\n");
126 #endif
127 printf(" status display status of server\n");
128 printf(" verbosity <number> change logging detail\n");
129 printf(" log_reopen close and open the logfile\n");
130 printf(" local_zone <name> <type> add new local zone\n");
131 printf(" local_zone_remove <name> remove local zone and its contents\n");
132 printf(" local_data <RR data...> add local data, for example\n");
133 printf(" local_data www.example.com A 192.0.2.1\n");
134 printf(" local_data_remove <name> remove local RR data from name\n");
135 printf(" local_zones,\n");
136 printf(" local_zones_remove,\n");
137 printf(" local_datas,\n");
138 printf(" local_datas_remove same, but read list from stdin\n");
139 printf(" (one entry per line).\n");
140 printf(" dump_cache print cache to stdout\n");
141 printf(" (not supported in remote unbounds in\n");
142 printf(" multi-process operation)\n");
143 printf(" load_cache load cache from stdin\n");
144 printf(" (not supported in remote unbounds in\n");
145 printf(" multi-process operation)\n");
146 printf(" cache_lookup [+t] <names> print rrsets and msgs at or under the names\n");
147 printf(" +t allow tld and root names.\n");
148 printf(" lookup <name> print nameservers for name\n");
149 printf(" flush [+c] <name> flushes common types for name from cache\n");
150 printf(" types: A, AAAA, MX, PTR, NS,\n");
151 printf(" SOA, CNAME, DNAME, SRV, NAPTR\n");
152 printf(" flush_type [+c] <name> <type> flush name, type from cache\n");
153 printf(" +c remove from cachedb too\n");
154 printf(" flush_zone [+c] <name> flush everything at or under name\n");
155 printf(" from rr and dnssec caches\n");
156 printf(" flush_bogus [+c] flush all bogus data\n");
157 printf(" flush_negative [+c] flush all negative data\n");
158 printf(" flush_stats flush statistics, make zero\n");
159 printf(" flush_requestlist drop queries that are worked on\n");
160 printf(" dump_requestlist show what is worked on by first thread\n");
161 printf(" flush_infra [all | ip] remove ping, edns for one IP or all\n");
162 printf(" dump_infra show ping and edns entries\n");
163 printf(" set_option opt: val set option to value, no reload\n");
164 printf(" get_option opt get option value\n");
165 printf(" list_stubs list stub-zones and root hints in use\n");
166 printf(" list_forwards list forward-zones in use\n");
167 printf(" list_insecure list domain-insecure zones\n");
168 printf(" list_local_zones list local-zones in use\n");
169 printf(" list_local_data list local-data RRs in use\n");
170 printf(" insecure_add zone add domain-insecure zone\n");
171 printf(" insecure_remove zone remove domain-insecure zone\n");
172 printf(" forward_add [+it] zone addr.. add forward-zone with servers\n");
173 printf(" forward_remove [+i] zone remove forward zone\n");
174 printf(" stub_add [+ipt] zone addr.. add stub-zone with servers\n");
175 printf(" stub_remove [+i] zone remove stub zone\n");
176 printf(" +i also do dnssec insecure point\n");
177 printf(" +p set stub to use priming\n");
178 printf(" +t set to use tls upstream\n");
179 printf(" forward [off | addr ...] without arg show forward setup\n");
180 printf(" or off to turn off root forwarding\n");
181 printf(" or give list of ip addresses\n");
182 printf(" ratelimit_list [+a] list ratelimited domains\n");
183 printf(" ip_ratelimit_list [+a] list ratelimited ip addresses\n");
184 printf(" +a list all, also not ratelimited\n");
185 printf(" list_auth_zones list auth zones (includes RPZ zones)\n");
186 printf(" auth_zone_reload zone reload auth zone (or RPZ zone) from zonefile\n");
187 printf(" auth_zone_transfer zone transfer auth zone (or RPZ zone) from master\n");
188 printf(" view_list_local_zones view list local-zones in view\n");
189 printf(" view_list_local_data view list local-data RRs in view\n");
190 printf(" view_local_zone view name type add local-zone in view\n");
191 printf(" view_local_zone_remove view name remove local-zone in view\n");
192 printf(" view_local_data view RR... add local-data in view\n");
193 printf(" view_local_datas view add list of local-data to view\n");
194 printf(" one entry per line read from stdin\n");
195 printf(" view_local_data_remove view name remove local-data in view\n");
196 printf(" view_local_datas_remove view remove list of local-data from view\n");
197 printf(" one entry per line read from stdin\n");
198 printf(" rpz_enable zone Enable the RPZ zone if it had previously\n");
199 printf(" been disabled\n");
200 printf(" rpz_disable zone Disable the RPZ zone\n");
201 printf(" add_cookie_secret <secret> add (or replace) a new cookie secret <secret>\n");
202 printf(" drop_cookie_secret drop a staging cookie secret\n");
203 printf(" activate_cookie_secret make a staging cookie secret active\n");
204 printf(" print_cookie_secrets show all cookie secrets with their status\n");
205 printf("Version %s\n", PACKAGE_VERSION);
206 printf("BSD licensed, see LICENSE in source package for details.\n");
207 printf("Report bugs to %s\n", PACKAGE_BUGREPORT);
208 exit(1);
209 }
210
211 #ifdef HAVE_SHMGET
212 /** what to put on statistics lines between var and value, ": " or "=" */
213 #define SQ "="
214 /** print unsigned long stats value */
215 #define PR_UL_NM(str, var) printf("%s."str SQ"%lu\n", nm, (unsigned long)(var));
216 #define PR_UL(str, var) printf(str SQ"%lu\n", (unsigned long)(var));
217 #define PR_UL_SUB(str, nm, var) printf(str".%s"SQ"%lu\n", nm, (unsigned long)(var));
218 #define PR_TIMEVAL(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
219 (long long)var.tv_sec, (int)var.tv_usec);
220 #define PR_STATSTIME(str, var) printf(str SQ ARG_LL "d.%6.6d\n", \
221 (long long)var ## _sec, (int)var ## _usec);
222 #define PR_LL(str, var) printf(str SQ ARG_LL"d\n", (long long)(var));
223
224 /** print stat block */
pr_stats(const char * nm,struct ub_stats_info * s)225 static void pr_stats(const char* nm, struct ub_stats_info* s)
226 {
227 struct timeval sumwait, avg;
228 PR_UL_NM("num.queries", s->svr.num_queries);
229 PR_UL_NM("num.queries_ip_ratelimited",
230 s->svr.num_queries_ip_ratelimited);
231 PR_UL_NM("num.queries_cookie_valid",
232 s->svr.num_queries_cookie_valid);
233 PR_UL_NM("num.queries_cookie_client",
234 s->svr.num_queries_cookie_client);
235 PR_UL_NM("num.queries_cookie_invalid",
236 s->svr.num_queries_cookie_invalid);
237 PR_UL_NM("num.queries_discard_timeout",
238 s->svr.num_queries_discard_timeout);
239 PR_UL_NM("num.queries_wait_limit", s->svr.num_queries_wait_limit);
240 PR_UL_NM("num.cachehits",
241 s->svr.num_queries - s->svr.num_queries_missed_cache);
242 PR_UL_NM("num.cachemiss", s->svr.num_queries_missed_cache);
243 PR_UL_NM("num.prefetch", s->svr.num_queries_prefetch);
244 PR_UL_NM("num.queries_timed_out", s->svr.num_queries_timed_out);
245 PR_UL_NM("query.queue_time_us.max", s->svr.max_query_time_us);
246 PR_UL_NM("num.expired", s->svr.ans_expired);
247 PR_UL_NM("num.recursivereplies", s->mesh_replies_sent);
248 #ifdef USE_DNSCRYPT
249 PR_UL_NM("num.dnscrypt.crypted", s->svr.num_query_dnscrypt_crypted);
250 PR_UL_NM("num.dnscrypt.cert", s->svr.num_query_dnscrypt_cert);
251 PR_UL_NM("num.dnscrypt.cleartext", s->svr.num_query_dnscrypt_cleartext);
252 PR_UL_NM("num.dnscrypt.malformed",
253 s->svr.num_query_dnscrypt_crypted_malformed);
254 #endif /* USE_DNSCRYPT */
255 PR_UL_NM("num.dns_error_reports", s->svr.num_dns_error_reports);
256 printf("%s.requestlist.avg"SQ"%g\n", nm,
257 (s->svr.num_queries_missed_cache+s->svr.num_queries_prefetch)?
258 (double)s->svr.sum_query_list_size/
259 (double)(s->svr.num_queries_missed_cache+
260 s->svr.num_queries_prefetch) : 0.0);
261 PR_UL_NM("requestlist.max", s->svr.max_query_list_size);
262 PR_UL_NM("requestlist.overwritten", s->mesh_jostled);
263 PR_UL_NM("requestlist.exceeded", s->mesh_dropped);
264 PR_UL_NM("requestlist.current.all", s->mesh_num_states);
265 PR_UL_NM("requestlist.current.user", s->mesh_num_reply_states);
266 #ifndef S_SPLINT_S
267 sumwait.tv_sec = s->mesh_replies_sum_wait_sec;
268 sumwait.tv_usec = s->mesh_replies_sum_wait_usec;
269 #endif
270 timeval_divide(&avg, &sumwait, s->mesh_replies_sent);
271 printf("%s.", nm);
272 PR_TIMEVAL("recursion.time.avg", avg);
273 printf("%s.recursion.time.median"SQ"%g\n", nm, s->mesh_time_median);
274 PR_UL_NM("tcpusage", s->svr.tcp_accept_usage);
275 }
276
277 /** print uptime */
print_uptime(struct ub_shm_stat_info * shm_stat)278 static void print_uptime(struct ub_shm_stat_info* shm_stat)
279 {
280 PR_STATSTIME("time.now", shm_stat->time.now);
281 PR_STATSTIME("time.up", shm_stat->time.up);
282 PR_STATSTIME("time.elapsed", shm_stat->time.elapsed);
283 }
284
285 /** print memory usage */
print_mem(struct ub_shm_stat_info * shm_stat,struct ub_stats_info * s)286 static void print_mem(struct ub_shm_stat_info* shm_stat,
287 struct ub_stats_info* s)
288 {
289 PR_LL("mem.cache.rrset", shm_stat->mem.rrset);
290 PR_LL("mem.cache.message", shm_stat->mem.msg);
291 PR_LL("mem.mod.iterator", shm_stat->mem.iter);
292 PR_LL("mem.mod.validator", shm_stat->mem.val);
293 PR_LL("mem.mod.respip", shm_stat->mem.respip);
294 #ifdef CLIENT_SUBNET
295 PR_LL("mem.mod.subnet", shm_stat->mem.subnet);
296 #endif
297 #ifdef USE_IPSECMOD
298 PR_LL("mem.mod.ipsecmod", shm_stat->mem.ipsecmod);
299 #endif
300 #ifdef WITH_DYNLIBMODULE
301 PR_LL("mem.mod.dynlib", shm_stat->mem.dynlib);
302 #endif
303 #ifdef USE_DNSCRYPT
304 PR_LL("mem.cache.dnscrypt_shared_secret",
305 shm_stat->mem.dnscrypt_shared_secret);
306 PR_LL("mem.cache.dnscrypt_nonce",
307 shm_stat->mem.dnscrypt_nonce);
308 #endif
309 PR_LL("mem.streamwait", s->svr.mem_stream_wait);
310 PR_LL("mem.http.query_buffer", s->svr.mem_http2_query_buffer);
311 PR_LL("mem.http.response_buffer", s->svr.mem_http2_response_buffer);
312 #ifdef HAVE_NGTCP2
313 PR_LL("mem.quic", s->svr.mem_quic);
314 #endif
315 }
316
317 /** print histogram */
print_hist(struct ub_stats_info * s)318 static void print_hist(struct ub_stats_info* s)
319 {
320 struct timehist* hist;
321 size_t i;
322 hist = timehist_setup();
323 if(!hist)
324 fatal_exit("out of memory");
325 timehist_import(hist, s->svr.hist, NUM_BUCKETS_HIST);
326 for(i=0; i<hist->num; i++) {
327 printf("histogram.%6.6d.%6.6d.to.%6.6d.%6.6d=%lu\n",
328 (int)hist->buckets[i].lower.tv_sec,
329 (int)hist->buckets[i].lower.tv_usec,
330 (int)hist->buckets[i].upper.tv_sec,
331 (int)hist->buckets[i].upper.tv_usec,
332 (unsigned long)hist->buckets[i].count);
333 }
334 timehist_delete(hist);
335 }
336
337 /** print extended */
print_extended(struct ub_stats_info * s,int inhibit_zero)338 static void print_extended(struct ub_stats_info* s, int inhibit_zero)
339 {
340 int i;
341 char nm[16];
342
343 /* TYPE */
344 for(i=0; i<UB_STATS_QTYPE_NUM; i++) {
345 if(inhibit_zero && s->svr.qtype[i] == 0)
346 continue;
347 sldns_wire2str_type_buf((uint16_t)i, nm, sizeof(nm));
348 PR_UL_SUB("num.query.type", nm, s->svr.qtype[i]);
349 }
350 if(!inhibit_zero || s->svr.qtype_big) {
351 PR_UL("num.query.type.other", s->svr.qtype_big);
352 }
353
354 /* CLASS */
355 for(i=0; i<UB_STATS_QCLASS_NUM; i++) {
356 if(inhibit_zero && s->svr.qclass[i] == 0)
357 continue;
358 sldns_wire2str_class_buf((uint16_t)i, nm, sizeof(nm));
359 PR_UL_SUB("num.query.class", nm, s->svr.qclass[i]);
360 }
361 if(!inhibit_zero || s->svr.qclass_big) {
362 PR_UL("num.query.class.other", s->svr.qclass_big);
363 }
364
365 /* OPCODE */
366 for(i=0; i<UB_STATS_OPCODE_NUM; i++) {
367 if(inhibit_zero && s->svr.qopcode[i] == 0)
368 continue;
369 sldns_wire2str_opcode_buf(i, nm, sizeof(nm));
370 PR_UL_SUB("num.query.opcode", nm, s->svr.qopcode[i]);
371 }
372
373 /* transport */
374 PR_UL("num.query.tcp", s->svr.qtcp);
375 PR_UL("num.query.tcpout", s->svr.qtcp_outgoing);
376 PR_UL("num.query.udpout", s->svr.qudp_outgoing);
377 PR_UL("num.query.tls", s->svr.qtls);
378 PR_UL("num.query.tls_resume", s->svr.qtls_resume);
379 PR_UL("num.query.ipv6", s->svr.qipv6);
380 PR_UL("num.query.https", s->svr.qhttps);
381 #ifdef HAVE_NGTCP2
382 PR_UL("num.query.quic", s->svr.qquic);
383 #endif
384
385 /* flags */
386 PR_UL("num.query.flags.QR", s->svr.qbit_QR);
387 PR_UL("num.query.flags.AA", s->svr.qbit_AA);
388 PR_UL("num.query.flags.TC", s->svr.qbit_TC);
389 PR_UL("num.query.flags.RD", s->svr.qbit_RD);
390 PR_UL("num.query.flags.RA", s->svr.qbit_RA);
391 PR_UL("num.query.flags.Z", s->svr.qbit_Z);
392 PR_UL("num.query.flags.AD", s->svr.qbit_AD);
393 PR_UL("num.query.flags.CD", s->svr.qbit_CD);
394 PR_UL("num.query.edns.present", s->svr.qEDNS);
395 PR_UL("num.query.edns.DO", s->svr.qEDNS_DO);
396
397 /* RCODE */
398 for(i=0; i<UB_STATS_RCODE_NUM; i++) {
399 /* Always include RCODEs 0-5 */
400 if(inhibit_zero && i > LDNS_RCODE_REFUSED && s->svr.ans_rcode[i] == 0)
401 continue;
402 sldns_wire2str_rcode_buf(i, nm, sizeof(nm));
403 PR_UL_SUB("num.answer.rcode", nm, s->svr.ans_rcode[i]);
404 }
405 if(!inhibit_zero || s->svr.ans_rcode_nodata) {
406 PR_UL("num.answer.rcode.nodata", s->svr.ans_rcode_nodata);
407 }
408 /* iteration */
409 PR_UL("num.query.ratelimited", s->svr.queries_ratelimited);
410 /* validation */
411 PR_UL("num.answer.secure", s->svr.ans_secure);
412 PR_UL("num.answer.bogus", s->svr.ans_bogus);
413 PR_UL("num.rrset.bogus", s->svr.rrset_bogus);
414 PR_UL("num.valops", s->svr.val_ops);
415 PR_UL("num.query.aggressive.NOERROR", s->svr.num_neg_cache_noerror);
416 PR_UL("num.query.aggressive.NXDOMAIN", s->svr.num_neg_cache_nxdomain);
417 /* threat detection */
418 PR_UL("unwanted.queries", s->svr.unwanted_queries);
419 PR_UL("unwanted.replies", s->svr.unwanted_replies);
420 /* cache counts */
421 PR_UL("msg.cache.count", s->svr.msg_cache_count);
422 PR_UL("rrset.cache.count", s->svr.rrset_cache_count);
423 PR_UL("infra.cache.count", s->svr.infra_cache_count);
424 PR_UL("key.cache.count", s->svr.key_cache_count);
425 /* max collisions */
426 PR_UL("msg.cache.max_collisions", s->svr.msg_cache_max_collisions);
427 PR_UL("rrset.cache.max_collisions", s->svr.rrset_cache_max_collisions);
428 /* applied RPZ actions */
429 for(i=0; i<UB_STATS_RPZ_ACTION_NUM; i++) {
430 if(i == RPZ_NO_OVERRIDE_ACTION)
431 continue;
432 if(inhibit_zero && s->svr.rpz_action[i] == 0)
433 continue;
434 PR_UL_SUB("num.rpz.action", rpz_action_to_string(i), s->svr.rpz_action[i]);
435 }
436 #ifdef USE_DNSCRYPT
437 PR_UL("dnscrypt_shared_secret.cache.count",
438 s->svr.shared_secret_cache_count);
439 PR_UL("num.query.dnscrypt.shared_secret.cachemiss",
440 s->svr.num_query_dnscrypt_secret_missed_cache);
441 PR_UL("dnscrypt_nonce.cache.count", s->svr.nonce_cache_count);
442 PR_UL("num.query.dnscrypt.replay",
443 s->svr.num_query_dnscrypt_replay);
444 #endif /* USE_DNSCRYPT */
445 PR_UL("num.query.authzone.up", s->svr.num_query_authzone_up);
446 PR_UL("num.query.authzone.down", s->svr.num_query_authzone_down);
447 #ifdef CLIENT_SUBNET
448 PR_UL("num.query.subnet", s->svr.num_query_subnet);
449 PR_UL("num.query.subnet_cache", s->svr.num_query_subnet_cache);
450 #endif
451 #ifdef USE_CACHEDB
452 PR_UL("num.query.cachedb", s->svr.num_query_cachedb);
453 #endif
454 }
455
456 /** print statistics out of memory structures */
do_stats_shm(struct config_file * cfg,struct ub_stats_info * stats,struct ub_shm_stat_info * shm_stat)457 static void do_stats_shm(struct config_file* cfg, struct ub_stats_info* stats,
458 struct ub_shm_stat_info* shm_stat)
459 {
460 int i;
461 char nm[32];
462 for(i=0; i<cfg->num_threads; i++) {
463 snprintf(nm, sizeof(nm), "thread%d", i);
464 pr_stats(nm, &stats[i+1]);
465 }
466 pr_stats("total", &stats[0]);
467 print_uptime(shm_stat);
468 if(cfg->stat_extended) {
469 print_mem(shm_stat, &stats[0]);
470 print_hist(stats);
471 print_extended(stats, cfg->stat_inhibit_zero);
472 }
473 }
474 #endif /* HAVE_SHMGET */
475
476 /** print statistics from shm memory segment */
print_stats_shm(const char * cfgfile,int quiet)477 static void print_stats_shm(const char* cfgfile, int quiet)
478 {
479 #ifdef HAVE_SHMGET
480 struct config_file* cfg;
481 struct ub_stats_info* stats;
482 struct ub_shm_stat_info* shm_stat;
483 int id_ctl, id_arr;
484 /* read config */
485 if(!(cfg = config_create()))
486 fatal_exit("out of memory");
487 if(!config_read(cfg, cfgfile, NULL))
488 fatal_exit("could not read config file");
489 /* get shm segments */
490 id_ctl = shmget(cfg->shm_key, sizeof(int), SHM_R);
491 if(id_ctl == -1) {
492 fatal_exit("shmget(%d): %s", cfg->shm_key, strerror(errno));
493 }
494 id_arr = shmget(cfg->shm_key+1, sizeof(int), SHM_R);
495 if(id_arr == -1) {
496 fatal_exit("shmget(%d): %s", cfg->shm_key+1, strerror(errno));
497 }
498 shm_stat = (struct ub_shm_stat_info*)shmat(id_ctl, NULL, SHM_RDONLY);
499 if(shm_stat == (void*)-1) {
500 fatal_exit("shmat(%d): %s", id_ctl, strerror(errno));
501 }
502 stats = (struct ub_stats_info*)shmat(id_arr, NULL, SHM_RDONLY);
503 if(stats == (void*)-1) {
504 fatal_exit("shmat(%d): %s", id_arr, strerror(errno));
505 }
506
507
508 if(!quiet) {
509 /* print the stats */
510 do_stats_shm(cfg, stats, shm_stat);
511 }
512
513 /* shutdown */
514 shmdt(shm_stat);
515 shmdt(stats);
516 config_delete(cfg);
517 #else
518 (void)cfgfile;
519 (void)quiet;
520 #endif /* HAVE_SHMGET */
521 }
522
523 /** exit with ssl error */
ssl_err(const char * s)524 static void ssl_err(const char* s)
525 {
526 fprintf(stderr, "error: %s\n", s);
527 ERR_print_errors_fp(stderr);
528 exit(1);
529 }
530
531 /** exit with ssl error related to a file path */
ssl_path_err(const char * s,const char * path)532 static void ssl_path_err(const char* s, const char *path)
533 {
534 unsigned long err;
535 err = ERR_peek_error();
536 if(ERR_GET_LIB(err) == ERR_LIB_SYS) {
537 fprintf(stderr, "error: %s\n%s: %s\n",
538 s, path, ERR_reason_error_string(err));
539 exit(1);
540 } else {
541 ssl_err(s);
542 }
543 }
544
545 /** setup SSL context */
546 static SSL_CTX*
setup_ctx(struct config_file * cfg)547 setup_ctx(struct config_file* cfg)
548 {
549 char* s_cert=NULL, *c_key=NULL, *c_cert=NULL;
550 SSL_CTX* ctx;
551
552 if(!(options_remote_is_address(cfg) && cfg->control_use_cert))
553 return NULL;
554 s_cert = fname_after_chroot(cfg->server_cert_file, cfg, 1);
555 c_key = fname_after_chroot(cfg->control_key_file, cfg, 1);
556 c_cert = fname_after_chroot(cfg->control_cert_file, cfg, 1);
557 if(!s_cert || !c_key || !c_cert)
558 fatal_exit("out of memory");
559 ctx = SSL_CTX_new(SSLv23_client_method());
560 if(!ctx)
561 ssl_err("could not allocate SSL_CTX pointer");
562 #if SSL_OP_NO_SSLv2 != 0
563 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) & SSL_OP_NO_SSLv2)
564 != SSL_OP_NO_SSLv2)
565 ssl_err("could not set SSL_OP_NO_SSLv2");
566 #endif
567 if((SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3) & SSL_OP_NO_SSLv3)
568 != SSL_OP_NO_SSLv3)
569 ssl_err("could not set SSL_OP_NO_SSLv3");
570 #if defined(SSL_OP_NO_RENEGOTIATION)
571 /* disable client renegotiation */
572 if((SSL_CTX_set_options(ctx, SSL_OP_NO_RENEGOTIATION) &
573 SSL_OP_NO_RENEGOTIATION) != SSL_OP_NO_RENEGOTIATION)
574 ssl_err("could not set SSL_OP_NO_RENEGOTIATION");
575 #endif
576 if(!SSL_CTX_use_certificate_chain_file(ctx,c_cert))
577 ssl_path_err("Error setting up SSL_CTX client cert", c_cert);
578 if(!SSL_CTX_use_PrivateKey_file(ctx,c_key,SSL_FILETYPE_PEM))
579 ssl_path_err("Error setting up SSL_CTX client key", c_key);
580 if(!SSL_CTX_check_private_key(ctx))
581 ssl_err("Error setting up SSL_CTX client key");
582 if(SSL_CTX_load_verify_locations(ctx, s_cert, NULL) != 1)
583 ssl_path_err("Error setting up SSL_CTX verify, server cert",
584 s_cert);
585 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
586
587 free(s_cert);
588 free(c_key);
589 free(c_cert);
590 return ctx;
591 }
592
593 /** check connect error */
594 static void
checkconnecterr(int err,const char * svr,struct sockaddr_storage * addr,socklen_t addrlen,int statuscmd,int useport)595 checkconnecterr(int err, const char* svr, struct sockaddr_storage* addr,
596 socklen_t addrlen, int statuscmd, int useport)
597 {
598 #ifndef USE_WINSOCK
599 if(!useport) log_err("connect: %s for %s", strerror(err), svr);
600 else log_err_addr("connect", strerror(err), addr, addrlen);
601 if(err == ECONNREFUSED && statuscmd) {
602 printf("unbound is stopped\n");
603 exit(3);
604 }
605 #else
606 int wsaerr = err;
607 if(!useport) log_err("connect: %s for %s", wsa_strerror(wsaerr), svr);
608 else log_err_addr("connect", wsa_strerror(wsaerr), addr, addrlen);
609 if(wsaerr == WSAECONNREFUSED && statuscmd) {
610 printf("unbound is stopped\n");
611 exit(3);
612 }
613 #endif
614 exit(1);
615 }
616
617 /** contact the server with TCP connect */
618 static int
contact_server(const char * svr,struct config_file * cfg,int statuscmd)619 contact_server(const char* svr, struct config_file* cfg, int statuscmd)
620 {
621 struct sockaddr_storage addr;
622 socklen_t addrlen;
623 int addrfamily = 0, proto = IPPROTO_TCP;
624 int fd, useport = 1;
625 char** rcif = NULL;
626 int num_rcif = 0;
627 /* use svr or the first config entry */
628 if(!svr) {
629 if(cfg->control_ifs.first) {
630 struct sockaddr_storage addr2;
631 socklen_t addrlen2;
632 if(extstrtoaddr(cfg->control_ifs.first->str, &addr2,
633 &addrlen2, UNBOUND_DNS_PORT)) {
634 svr = cfg->control_ifs.first->str;
635 } else {
636 if(!resolve_interface_names(NULL, 0,
637 cfg->control_ifs.first, &rcif,
638 &num_rcif)) {
639 fatal_exit("could not resolve interface names");
640 }
641 if(rcif == NULL || num_rcif == 0) {
642 fatal_exit("no control interfaces");
643 }
644 svr = rcif[0];
645 }
646 } else if(cfg->do_ip4) {
647 svr = "127.0.0.1";
648 } else {
649 svr = "::1";
650 }
651 /* config 0 addr (everything), means ask localhost */
652 if(strcmp(svr, "0.0.0.0") == 0)
653 svr = "127.0.0.1";
654 else if(strcmp(svr, "::0") == 0 ||
655 strcmp(svr, "0::0") == 0 ||
656 strcmp(svr, "0::") == 0 ||
657 strcmp(svr, "::") == 0)
658 svr = "::1";
659 }
660 if(strchr(svr, '@')) {
661 if(!extstrtoaddr(svr, &addr, &addrlen, UNBOUND_DNS_PORT))
662 fatal_exit("could not parse IP@port: %s", svr);
663 #ifdef HAVE_SYS_UN_H
664 } else if(svr[0] == '/') {
665 struct sockaddr_un* usock = (struct sockaddr_un *) &addr;
666 usock->sun_family = AF_LOCAL;
667 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
668 usock->sun_len = (unsigned)sizeof(usock);
669 #endif
670 (void)strlcpy(usock->sun_path, svr, sizeof(usock->sun_path));
671 addrlen = (socklen_t)sizeof(struct sockaddr_un);
672 addrfamily = AF_LOCAL;
673 useport = 0;
674 proto = 0;
675 #endif
676 } else {
677 if(!ipstrtoaddr(svr, cfg->control_port, &addr, &addrlen))
678 fatal_exit("could not parse IP: %s", svr);
679 }
680
681 if(addrfamily == 0)
682 addrfamily = addr_is_ip6(&addr, addrlen)?PF_INET6:PF_INET;
683 fd = socket(addrfamily, SOCK_STREAM, proto);
684 if(fd == -1) {
685 fatal_exit("socket: %s", sock_strerror(errno));
686 }
687 fd_set_nonblock(fd);
688 if(connect(fd, (struct sockaddr*)&addr, addrlen) < 0) {
689 #ifndef USE_WINSOCK
690 #ifdef EINPROGRESS
691 if(errno != EINPROGRESS) {
692 checkconnecterr(errno, svr, &addr,
693 addrlen, statuscmd, useport);
694 }
695 #endif
696 #else
697 if(WSAGetLastError() != WSAEINPROGRESS &&
698 WSAGetLastError() != WSAEWOULDBLOCK) {
699 checkconnecterr(WSAGetLastError(), svr, &addr,
700 addrlen, statuscmd, useport);
701 }
702 #endif
703 }
704 while(1) {
705 fd_set rset, wset, eset;
706 struct timeval tv;
707 FD_ZERO(&rset);
708 FD_SET(FD_SET_T fd, &rset);
709 FD_ZERO(&wset);
710 FD_SET(FD_SET_T fd, &wset);
711 FD_ZERO(&eset);
712 FD_SET(FD_SET_T fd, &eset);
713 tv.tv_sec = UNBOUND_CONTROL_CONNECT_TIMEOUT/1000;
714 tv.tv_usec= (UNBOUND_CONTROL_CONNECT_TIMEOUT%1000)*1000;
715 if(select(fd+1, &rset, &wset, &eset, &tv) == -1) {
716 fatal_exit("select: %s", sock_strerror(errno));
717 }
718 if(!FD_ISSET(fd, &rset) && !FD_ISSET(fd, &wset) &&
719 !FD_ISSET(fd, &eset)) {
720 fatal_exit("timeout: could not connect to server");
721 } else {
722 /* check nonblocking connect error */
723 int error = 0;
724 socklen_t len = (socklen_t)sizeof(error);
725 if(getsockopt(fd, SOL_SOCKET, SO_ERROR, (void*)&error,
726 &len) < 0) {
727 #ifndef USE_WINSOCK
728 error = errno; /* on solaris errno is error */
729 #else
730 error = WSAGetLastError();
731 #endif
732 }
733 if(error != 0) {
734 #ifndef USE_WINSOCK
735 #ifdef EINPROGRESS
736 if(error == EINPROGRESS)
737 continue; /* try again later */
738 #endif
739 #ifdef EWOULDBLOCK
740 if(error == EWOULDBLOCK)
741 continue; /* try again later */
742 #endif
743 #else
744 if(error == WSAEINPROGRESS)
745 continue; /* try again later */
746 if(error == WSAEWOULDBLOCK)
747 continue; /* try again later */
748 #endif
749 checkconnecterr(error, svr, &addr, addrlen,
750 statuscmd, useport);
751 }
752 }
753 break;
754 }
755 fd_set_block(fd);
756 config_del_strarray(rcif, num_rcif);
757 return fd;
758 }
759
760 /** setup SSL on the connection */
761 static SSL*
setup_ssl(SSL_CTX * ctx,int fd)762 setup_ssl(SSL_CTX* ctx, int fd)
763 {
764 SSL* ssl;
765 X509* x;
766 int r;
767
768 if(!ctx) return NULL;
769 ssl = SSL_new(ctx);
770 if(!ssl)
771 ssl_err("could not SSL_new");
772 SSL_set_connect_state(ssl);
773 (void)SSL_set_mode(ssl, (long)SSL_MODE_AUTO_RETRY);
774 if(!SSL_set_fd(ssl, fd))
775 ssl_err("could not SSL_set_fd");
776 while(1) {
777 ERR_clear_error();
778 if( (r=SSL_do_handshake(ssl)) == 1)
779 break;
780 r = SSL_get_error(ssl, r);
781 if(r != SSL_ERROR_WANT_READ && r != SSL_ERROR_WANT_WRITE)
782 ssl_err("SSL handshake failed");
783 /* wants to be called again */
784 }
785
786 /* check authenticity of server */
787 if(SSL_get_verify_result(ssl) != X509_V_OK)
788 ssl_err("SSL verification failed");
789 #ifdef HAVE_SSL_GET1_PEER_CERTIFICATE
790 x = SSL_get1_peer_certificate(ssl);
791 #else
792 x = SSL_get_peer_certificate(ssl);
793 #endif
794 if(!x)
795 ssl_err("Server presented no peer certificate");
796 X509_free(x);
797
798 return ssl;
799 }
800
801 /** read from ssl or fd, fatalexit on error, 0 EOF, 1 success */
802 static int
remote_read(SSL * ssl,int fd,char * buf,size_t len)803 remote_read(SSL* ssl, int fd, char* buf, size_t len)
804 {
805 if(ssl) {
806 int r;
807 ERR_clear_error();
808 if((r = SSL_read(ssl, buf, (int)len-1)) <= 0) {
809 if(SSL_get_error(ssl, r) == SSL_ERROR_ZERO_RETURN) {
810 /* EOF */
811 return 0;
812 }
813 ssl_err("could not SSL_read");
814 }
815 buf[r] = 0;
816 } else {
817 ssize_t rr = recv(fd, buf, len-1, 0);
818 if(rr <= 0) {
819 if(rr == 0) {
820 /* EOF */
821 return 0;
822 }
823 fatal_exit("could not recv: %s", sock_strerror(errno));
824 }
825 buf[rr] = 0;
826 }
827 return 1;
828 }
829
830 /** write to ssl or fd, fatalexit on error */
831 static void
remote_write(SSL * ssl,int fd,const char * buf,size_t len)832 remote_write(SSL* ssl, int fd, const char* buf, size_t len)
833 {
834 if(ssl) {
835 if(SSL_write(ssl, buf, (int)len) <= 0)
836 ssl_err("could not SSL_write");
837 } else {
838 if(send(fd, buf, len, 0) < (ssize_t)len) {
839 fatal_exit("could not send: %s", sock_strerror(errno));
840 }
841 }
842 }
843
844 /** check args, to see if too many args. Because when a file is sent it
845 * would wait for the terminal, and we can check for too many arguments,
846 * eg. user put arguments on the commandline. */
847 static void
check_args_for_listcmd(int argc,char * argv[])848 check_args_for_listcmd(int argc, char* argv[])
849 {
850 if(argc >= 1 && (strcmp(argv[0], "local_zones") == 0 ||
851 strcmp(argv[0], "local_zones_remove") == 0 ||
852 strcmp(argv[0], "local_datas") == 0 ||
853 strcmp(argv[0], "local_datas_remove") == 0) &&
854 argc >= 2) {
855 fatal_exit("too many arguments for command '%s', "
856 "content is piped in from stdin", argv[0]);
857 }
858 if(argc >= 1 && (strcmp(argv[0], "view_local_datas") == 0 ||
859 strcmp(argv[0], "view_local_datas_remove") == 0) &&
860 argc >= 3) {
861 fatal_exit("too many arguments for command '%s', "
862 "content is piped in from stdin", argv[0]);
863 }
864 }
865
866 /** send stdin to server */
867 static void
send_file(SSL * ssl,int fd,FILE * in,char * buf,size_t sz)868 send_file(SSL* ssl, int fd, FILE* in, char* buf, size_t sz)
869 {
870 while(fgets(buf, (int)sz, in)) {
871 remote_write(ssl, fd, buf, strlen(buf));
872 }
873 }
874
875 /** send end-of-file marker to server */
876 static void
send_eof(SSL * ssl,int fd)877 send_eof(SSL* ssl, int fd)
878 {
879 char e[] = {0x04, 0x0a};
880 remote_write(ssl, fd, e, sizeof(e));
881 }
882
883 /** send command and display result */
884 static int
go_cmd(SSL * ssl,int fd,int quiet,int argc,char * argv[])885 go_cmd(SSL* ssl, int fd, int quiet, int argc, char* argv[])
886 {
887 char pre[10];
888 const char* space=" ";
889 const char* newline="\n";
890 int was_error = 0, first_line = 1;
891 int i;
892 char buf[1024];
893 snprintf(pre, sizeof(pre), "UBCT%d ", UNBOUND_CONTROL_VERSION);
894 remote_write(ssl, fd, pre, strlen(pre));
895 for(i=0; i<argc; i++) {
896 remote_write(ssl, fd, space, strlen(space));
897 remote_write(ssl, fd, argv[i], strlen(argv[i]));
898 }
899 remote_write(ssl, fd, newline, strlen(newline));
900
901 if(argc == 1 && strcmp(argv[0], "load_cache") == 0) {
902 send_file(ssl, fd, stdin, buf, sizeof(buf));
903 }
904 else if(argc >= 1 && (strcmp(argv[0], "local_zones") == 0 ||
905 strcmp(argv[0], "local_zones_remove") == 0 ||
906 strcmp(argv[0], "local_datas") == 0 ||
907 strcmp(argv[0], "view_local_datas") == 0 ||
908 strcmp(argv[0], "local_datas_remove") == 0 ||
909 strcmp(argv[0], "view_local_datas_remove") == 0)) {
910 send_file(ssl, fd, stdin, buf, sizeof(buf));
911 send_eof(ssl, fd);
912 }
913
914 while(1) {
915 if(remote_read(ssl, fd, buf, sizeof(buf)) == 0) {
916 break; /* EOF */
917 }
918 if(first_line && strncmp(buf, "error", 5) == 0) {
919 printf("%s", buf);
920 was_error = 1;
921 } else if(!quiet) {
922 printf("%s", buf);
923 }
924
925 first_line = 0;
926 }
927 return was_error;
928 }
929
930 /** go ahead and read config, contact server and perform command and display */
931 static int
go(const char * cfgfile,char * svr,int quiet,int argc,char * argv[])932 go(const char* cfgfile, char* svr, int quiet, int argc, char* argv[])
933 {
934 struct config_file* cfg;
935 int fd, ret;
936 SSL_CTX* ctx;
937 SSL* ssl;
938
939 /* read config */
940 if(!(cfg = config_create()))
941 fatal_exit("out of memory");
942 if(!config_read(cfg, cfgfile, NULL))
943 fatal_exit("could not read config file");
944 if(!cfg->remote_control_enable)
945 log_warn("control-enable is 'no' in the config file.");
946 #ifdef UB_ON_WINDOWS
947 w_config_adjust_directory(cfg);
948 #endif
949 ctx = setup_ctx(cfg);
950
951 /* contact server */
952 fd = contact_server(svr, cfg, argc>0&&strcmp(argv[0],"status")==0);
953 ssl = setup_ssl(ctx, fd);
954
955 /* send command */
956 ret = go_cmd(ssl, fd, quiet, argc, argv);
957
958 if(ssl) SSL_free(ssl);
959 sock_close(fd);
960 if(ctx) SSL_CTX_free(ctx);
961 config_delete(cfg);
962 return ret;
963 }
964
965 /** getopt global, in case header files fail to declare it. */
966 extern int optind;
967 /** getopt global, in case header files fail to declare it. */
968 extern char* optarg;
969
970 /** Main routine for unbound-control */
main(int argc,char * argv[])971 int main(int argc, char* argv[])
972 {
973 int c, ret;
974 int quiet = 0;
975 const char* cfgfile = CONFIGFILE;
976 char* svr = NULL;
977 #ifdef USE_WINSOCK
978 int r;
979 WSADATA wsa_data;
980 #endif
981 #ifdef USE_THREAD_DEBUG
982 /* stop the file output from unbound-control, overwrites the servers */
983 extern int check_locking_order;
984 check_locking_order = 0;
985 #endif /* USE_THREAD_DEBUG */
986 checklock_start();
987 log_ident_set("unbound-control");
988 log_init(NULL, 0, NULL);
989 #ifdef USE_WINSOCK
990 /* use registry config file in preference to compiletime location */
991 if(!(cfgfile=w_lookup_reg_str("Software\\Unbound", "ConfigFile")))
992 cfgfile = CONFIGFILE;
993 #endif
994 /* parse the options */
995 while( (c=getopt(argc, argv, "c:s:qh")) != -1) {
996 switch(c) {
997 case 'c':
998 cfgfile = optarg;
999 break;
1000 case 's':
1001 svr = optarg;
1002 break;
1003 case 'q':
1004 quiet = 1;
1005 break;
1006 case '?':
1007 case 'h':
1008 default:
1009 usage();
1010 }
1011 }
1012 argc -= optind;
1013 argv += optind;
1014 if(argc == 0)
1015 usage();
1016 if(argc >= 1 && strcmp(argv[0], "start")==0) {
1017 #if (defined(TARGET_OS_TV) && TARGET_OS_TV) || (defined(TARGET_OS_WATCH) && TARGET_OS_WATCH)
1018 fatal_exit("could not exec unbound: %s",
1019 strerror(ENOSYS));
1020 #else
1021 if(execlp("unbound", "unbound", "-c", cfgfile,
1022 (char*)NULL) < 0) {
1023 fatal_exit("could not exec unbound: %s",
1024 strerror(errno));
1025 }
1026 #endif
1027 }
1028 if(argc >= 1 && strcmp(argv[0], "stats_shm")==0) {
1029 print_stats_shm(cfgfile, quiet);
1030 return 0;
1031 }
1032 check_args_for_listcmd(argc, argv);
1033
1034 #ifdef USE_WINSOCK
1035 if((r = WSAStartup(MAKEWORD(2,2), &wsa_data)) != 0)
1036 fatal_exit("WSAStartup failed: %s", wsa_strerror(r));
1037 #endif
1038
1039 #ifdef HAVE_ERR_LOAD_CRYPTO_STRINGS
1040 ERR_load_crypto_strings();
1041 #endif
1042 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
1043 ERR_load_SSL_strings();
1044 #endif
1045 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_CRYPTO)
1046 # ifndef S_SPLINT_S
1047 OpenSSL_add_all_algorithms();
1048 # endif
1049 #else
1050 OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS
1051 | OPENSSL_INIT_ADD_ALL_DIGESTS
1052 | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
1053 #endif
1054 #if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
1055 (void)SSL_library_init();
1056 #else
1057 (void)OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL);
1058 #endif
1059
1060 if(!RAND_status()) {
1061 /* try to seed it */
1062 unsigned char buf[256];
1063 unsigned int seed=(unsigned)time(NULL) ^ (unsigned)getpid();
1064 unsigned int v = seed;
1065 size_t i;
1066 for(i=0; i<256/sizeof(v); i++) {
1067 memmove(buf+i*sizeof(v), &v, sizeof(v));
1068 v = v*seed + (unsigned int)i;
1069 }
1070 RAND_seed(buf, 256);
1071 log_warn("no entropy, seeding openssl PRNG with time\n");
1072 }
1073
1074 ret = go(cfgfile, svr, quiet, argc, argv);
1075
1076 #ifdef USE_WINSOCK
1077 WSACleanup();
1078 #endif
1079 checklock_stop();
1080 return ret;
1081 }
1082