xref: /freebsd/contrib/unbound/util/fptr_wlist.c (revision 4f8f43b06ed07e96a250855488cc531799d5b78f)
1 /*
2  * util/fptr_wlist.c - function pointer whitelists.
3  *
4  * Copyright (c) 2007, 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 functions that check function pointers.
40  * The functions contain a whitelist of known good callback values.
41  * Any other values lead to an error.
42  *
43  * Due to the listing nature, this file violates all the modularization
44  * boundaries in the program.
45  */
46 #include "config.h"
47 #include "util/fptr_wlist.h"
48 #include "util/mini_event.h"
49 #include "services/outside_network.h"
50 #include "services/mesh.h"
51 #include "services/localzone.h"
52 #include "services/authzone.h"
53 #include "services/cache/infra.h"
54 #include "services/cache/rrset.h"
55 #include "services/view.h"
56 #include "dns64/dns64.h"
57 #include "iterator/iterator.h"
58 #include "iterator/iter_fwd.h"
59 #include "validator/validator.h"
60 #include "validator/val_anchor.h"
61 #include "validator/val_nsec3.h"
62 #include "validator/val_sigcrypt.h"
63 #include "validator/val_kentry.h"
64 #include "validator/val_neg.h"
65 #include "validator/autotrust.h"
66 #include "util/data/msgreply.h"
67 #include "util/data/packed_rrset.h"
68 #include "util/storage/slabhash.h"
69 #include "util/storage/dnstree.h"
70 #include "util/locks.h"
71 #include "libunbound/libworker.h"
72 #include "libunbound/context.h"
73 #include "libunbound/worker.h"
74 #include "util/tube.h"
75 #include "util/config_file.h"
76 #ifdef UB_ON_WINDOWS
77 #include "winrc/win_svc.h"
78 #endif
79 #include "respip/respip.h"
80 
81 #ifdef WITH_PYTHONMODULE
82 #include "pythonmod/pythonmod.h"
83 #endif
84 #ifdef WITH_DYNLIBMODULE
85 #include "dynlibmod/dynlibmod.h"
86 #endif
87 #ifdef USE_CACHEDB
88 #include "cachedb/cachedb.h"
89 #endif
90 #ifdef USE_IPSECMOD
91 #include "ipsecmod/ipsecmod.h"
92 #endif
93 #ifdef CLIENT_SUBNET
94 #include "edns-subnet/subnetmod.h"
95 #endif
96 #ifdef USE_IPSET
97 #include "ipset/ipset.h"
98 #endif
99 #ifdef USE_DNSTAP
100 #include "dnstap/dtstream.h"
101 #endif
102 
103 int
104 fptr_whitelist_comm_point(comm_point_callback_type *fptr)
105 {
106 	if(fptr == &worker_handle_request) return 1;
107 	else if(fptr == &outnet_udp_cb) return 1;
108 	else if(fptr == &outnet_tcp_cb) return 1;
109 	else if(fptr == &tube_handle_listen) return 1;
110 	else if(fptr == &auth_xfer_probe_udp_callback) return 1;
111 	else if(fptr == &auth_xfer_transfer_tcp_callback) return 1;
112 	else if(fptr == &auth_xfer_transfer_http_callback) return 1;
113 	return 0;
114 }
115 
116 int
117 fptr_whitelist_comm_point_raw(comm_point_callback_type *fptr)
118 {
119 	if(fptr == &tube_handle_listen) return 1;
120 	else if(fptr == &tube_handle_write) return 1;
121 	else if(fptr == &remote_accept_callback) return 1;
122 	else if(fptr == &remote_control_callback) return 1;
123 	return 0;
124 }
125 
126 int
127 fptr_whitelist_comm_timer(void (*fptr)(void*))
128 {
129 	if(fptr == &pending_udp_timer_cb) return 1;
130 	else if(fptr == &outnet_tcptimer) return 1;
131 	else if(fptr == &pending_udp_timer_delay_cb) return 1;
132 	else if(fptr == &worker_stat_timer_cb) return 1;
133 	else if(fptr == &worker_probe_timer_cb) return 1;
134 #ifdef UB_ON_WINDOWS
135 	else if(fptr == &wsvc_cron_cb) return 1;
136 #endif
137 	else if(fptr == &auth_xfer_timer) return 1;
138 	else if(fptr == &auth_xfer_probe_timer_callback) return 1;
139 	else if(fptr == &auth_xfer_transfer_timer_callback) return 1;
140 	else if(fptr == &mesh_serve_expired_callback) return 1;
141 	else if(fptr == &serviced_timer_cb) return 1;
142 #ifdef USE_DNSTAP
143 	else if(fptr == &mq_wakeup_cb) return 1;
144 #endif
145 	return 0;
146 }
147 
148 int
149 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
150 {
151 	if(fptr == &worker_sighandler) return 1;
152 	return 0;
153 }
154 
155 int fptr_whitelist_start_accept(void (*fptr)(void*))
156 {
157 	if(fptr == &worker_start_accept) return 1;
158 	return 0;
159 }
160 
161 int fptr_whitelist_stop_accept(void (*fptr)(void*))
162 {
163 	if(fptr == &worker_stop_accept) return 1;
164 	return 0;
165 }
166 
167 int
168 fptr_whitelist_event(void (*fptr)(int, short, void *))
169 {
170 	if(fptr == &comm_point_udp_callback) return 1;
171 	else if(fptr == &comm_point_udp_ancil_callback) return 1;
172 	else if(fptr == &comm_point_tcp_accept_callback) return 1;
173 	else if(fptr == &comm_point_tcp_handle_callback) return 1;
174 	else if(fptr == &comm_timer_callback) return 1;
175 	else if(fptr == &comm_signal_callback) return 1;
176 	else if(fptr == &comm_point_local_handle_callback) return 1;
177 	else if(fptr == &comm_point_raw_handle_callback) return 1;
178 	else if(fptr == &tube_handle_signal) return 1;
179 	else if(fptr == &comm_base_handle_slow_accept) return 1;
180 	else if(fptr == &comm_point_http_handle_callback) return 1;
181 #ifdef USE_DNSTAP
182 	else if(fptr == &dtio_output_cb) return 1;
183 	else if(fptr == &dtio_cmd_cb) return 1;
184 	else if(fptr == &dtio_reconnect_timeout_cb) return 1;
185 	else if(fptr == &dtio_stop_timer_cb) return 1;
186 	else if(fptr == &dtio_stop_ev_cb) return 1;
187 	else if(fptr == &dtio_tap_callback) return 1;
188 	else if(fptr == &dtio_mainfdcallback) return 1;
189 #endif
190 #ifdef UB_ON_WINDOWS
191 	else if(fptr == &worker_win_stop_cb) return 1;
192 #endif
193 	return 0;
194 }
195 
196 int
197 fptr_whitelist_pending_udp(comm_point_callback_type *fptr)
198 {
199 	if(fptr == &serviced_udp_callback) return 1;
200 	return 0;
201 }
202 
203 int
204 fptr_whitelist_pending_tcp(comm_point_callback_type *fptr)
205 {
206 	if(fptr == &serviced_tcp_callback) return 1;
207 	return 0;
208 }
209 
210 int
211 fptr_whitelist_serviced_query(comm_point_callback_type *fptr)
212 {
213 	if(fptr == &worker_handle_service_reply) return 1;
214 	else if(fptr == &libworker_handle_service_reply) return 1;
215 	return 0;
216 }
217 
218 int
219 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
220 {
221 	if(fptr == &mesh_state_compare) return 1;
222 	else if(fptr == &mesh_state_ref_compare) return 1;
223 	else if(fptr == &addr_tree_compare) return 1;
224 	else if(fptr == &addr_tree_addrport_compare) return 1;
225 	else if(fptr == &local_zone_cmp) return 1;
226 	else if(fptr == &local_data_cmp) return 1;
227 	else if(fptr == &fwd_cmp) return 1;
228 	else if(fptr == &pending_cmp) return 1;
229 	else if(fptr == &serviced_cmp) return 1;
230 	else if(fptr == &reuse_cmp) return 1;
231 	else if(fptr == &reuse_id_cmp) return 1;
232 	else if(fptr == &name_tree_compare) return 1;
233 	else if(fptr == &order_lock_cmp) return 1;
234 	else if(fptr == &codeline_cmp) return 1;
235 	else if(fptr == &nsec3_hash_cmp) return 1;
236 	else if(fptr == &mini_ev_cmp) return 1;
237 	else if(fptr == &anchor_cmp) return 1;
238 	else if(fptr == &canonical_tree_compare) return 1;
239 	else if(fptr == &context_query_cmp) return 1;
240 	else if(fptr == &val_neg_data_compare) return 1;
241 	else if(fptr == &val_neg_zone_compare) return 1;
242 	else if(fptr == &probetree_cmp) return 1;
243 	else if(fptr == &replay_var_compare) return 1;
244 	else if(fptr == &view_cmp) return 1;
245 	else if(fptr == &auth_zone_cmp) return 1;
246 	else if(fptr == &auth_data_cmp) return 1;
247 	else if(fptr == &auth_xfer_cmp) return 1;
248 	return 0;
249 }
250 
251 int
252 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_type fptr)
253 {
254 	if(fptr == &msgreply_sizefunc) return 1;
255 	else if(fptr == &ub_rrset_sizefunc) return 1;
256 	else if(fptr == &infra_sizefunc) return 1;
257 	else if(fptr == &key_entry_sizefunc) return 1;
258 	else if(fptr == &rate_sizefunc) return 1;
259 	else if(fptr == &ip_rate_sizefunc) return 1;
260 	else if(fptr == &test_slabhash_sizefunc) return 1;
261 #ifdef CLIENT_SUBNET
262 	else if(fptr == &msg_cache_sizefunc) return 1;
263 #endif
264 #ifdef USE_DNSCRYPT
265 	else if(fptr == &dnsc_shared_secrets_sizefunc) return 1;
266 	else if(fptr == &dnsc_nonces_sizefunc) return 1;
267 #endif
268 	return 0;
269 }
270 
271 int
272 fptr_whitelist_hash_compfunc(lruhash_compfunc_type fptr)
273 {
274 	if(fptr == &query_info_compare) return 1;
275 	else if(fptr == &ub_rrset_compare) return 1;
276 	else if(fptr == &infra_compfunc) return 1;
277 	else if(fptr == &key_entry_compfunc) return 1;
278 	else if(fptr == &rate_compfunc) return 1;
279 	else if(fptr == &ip_rate_compfunc) return 1;
280 	else if(fptr == &test_slabhash_compfunc) return 1;
281 #ifdef USE_DNSCRYPT
282 	else if(fptr == &dnsc_shared_secrets_compfunc) return 1;
283 	else if(fptr == &dnsc_nonces_compfunc) return 1;
284 #endif
285 	return 0;
286 }
287 
288 int
289 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_type fptr)
290 {
291 	if(fptr == &query_entry_delete) return 1;
292 	else if(fptr == &ub_rrset_key_delete) return 1;
293 	else if(fptr == &infra_delkeyfunc) return 1;
294 	else if(fptr == &key_entry_delkeyfunc) return 1;
295 	else if(fptr == &rate_delkeyfunc) return 1;
296 	else if(fptr == &ip_rate_delkeyfunc) return 1;
297 	else if(fptr == &test_slabhash_delkey) return 1;
298 #ifdef USE_DNSCRYPT
299 	else if(fptr == &dnsc_shared_secrets_delkeyfunc) return 1;
300 	else if(fptr == &dnsc_nonces_delkeyfunc) return 1;
301 #endif
302 	return 0;
303 }
304 
305 int
306 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_type fptr)
307 {
308 	if(fptr == &reply_info_delete) return 1;
309 	else if(fptr == &rrset_data_delete) return 1;
310 	else if(fptr == &infra_deldatafunc) return 1;
311 	else if(fptr == &key_entry_deldatafunc) return 1;
312 	else if(fptr == &rate_deldatafunc) return 1;
313 	else if(fptr == &test_slabhash_deldata) return 1;
314 #ifdef CLIENT_SUBNET
315 	else if(fptr == &subnet_data_delete) return 1;
316 #endif
317 #ifdef USE_DNSCRYPT
318 	else if(fptr == &dnsc_shared_secrets_deldatafunc) return 1;
319 	else if(fptr == &dnsc_nonces_deldatafunc) return 1;
320 #endif
321 	return 0;
322 }
323 
324 int
325 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_type fptr)
326 {
327 	if(fptr == NULL) return 1;
328 	else if(fptr == &rrset_markdel) return 1;
329 #ifdef CLIENT_SUBNET
330 	else if(fptr == &subnet_markdel) return 1;
331 #endif
332 	return 0;
333 }
334 
335 /** whitelist env->send_query callbacks */
336 int
337 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
338 	struct query_info* qinfo, uint16_t flags, int dnssec, int want_dnssec,
339 	int nocaps, int check_ratelimit, struct sockaddr_storage* addr,
340 	socklen_t addrlen, uint8_t* zone, size_t zonelen, int tcp_upstream,
341 	int ssl_upstream, char* tls_auth_name, struct module_qstate* q,
342 	int* was_ratelimited))
343 {
344 	if(fptr == &worker_send_query) return 1;
345 	else if(fptr == &libworker_send_query) return 1;
346 	return 0;
347 }
348 
349 int
350 fptr_whitelist_modenv_detach_subs(void (*fptr)(
351         struct module_qstate* qstate))
352 {
353 	if(fptr == &mesh_detach_subs) return 1;
354 	return 0;
355 }
356 
357 int
358 fptr_whitelist_modenv_attach_sub(int (*fptr)(
359         struct module_qstate* qstate, struct query_info* qinfo,
360         uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
361 {
362 	if(fptr == &mesh_attach_sub) return 1;
363 	return 0;
364 }
365 
366 int
367 fptr_whitelist_modenv_add_sub(int (*fptr)(
368         struct module_qstate* qstate, struct query_info* qinfo,
369         uint16_t qflags, int prime, int valrec, struct module_qstate** newq,
370 	struct mesh_state** sub))
371 {
372 	if(fptr == &mesh_add_sub) return 1;
373 	return 0;
374 }
375 
376 int
377 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
378 {
379 	if(fptr == &mesh_state_delete) return 1;
380 	return 0;
381 }
382 
383 int
384 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
385 	struct module_qstate* qstate, struct query_info* qinfo,
386 	uint16_t flags, int prime, int valrec))
387 {
388 	if(fptr == &mesh_detect_cycle) return 1;
389 	return 0;
390 }
391 
392 int
393 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
394 {
395 	if(fptr == &iter_init) return 1;
396 	else if(fptr == &val_init) return 1;
397 	else if(fptr == &dns64_init) return 1;
398 	else if(fptr == &respip_init) return 1;
399 #ifdef WITH_PYTHONMODULE
400 	else if(fptr == &pythonmod_init) return 1;
401 #endif
402 #ifdef WITH_DYNLIBMODULE
403 	else if(fptr == &dynlibmod_init) return 1;
404 #endif
405 #ifdef USE_CACHEDB
406 	else if(fptr == &cachedb_init) return 1;
407 #endif
408 #ifdef USE_IPSECMOD
409 	else if(fptr == &ipsecmod_init) return 1;
410 #endif
411 #ifdef CLIENT_SUBNET
412 	else if(fptr == &subnetmod_init) return 1;
413 #endif
414 #ifdef USE_IPSET
415 	else if(fptr == &ipset_init) return 1;
416 #endif
417 	return 0;
418 }
419 
420 int
421 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
422 {
423 	if(fptr == &iter_deinit) return 1;
424 	else if(fptr == &val_deinit) return 1;
425 	else if(fptr == &dns64_deinit) return 1;
426 	else if(fptr == &respip_deinit) return 1;
427 #ifdef WITH_PYTHONMODULE
428 	else if(fptr == &pythonmod_deinit) return 1;
429 #endif
430 #ifdef WITH_DYNLIBMODULE
431 	else if(fptr == &dynlibmod_deinit) return 1;
432 #endif
433 #ifdef USE_CACHEDB
434 	else if(fptr == &cachedb_deinit) return 1;
435 #endif
436 #ifdef USE_IPSECMOD
437 	else if(fptr == &ipsecmod_deinit) return 1;
438 #endif
439 #ifdef CLIENT_SUBNET
440 	else if(fptr == &subnetmod_deinit) return 1;
441 #endif
442 #ifdef USE_IPSET
443 	else if(fptr == &ipset_deinit) return 1;
444 #endif
445 	return 0;
446 }
447 
448 int
449 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
450         enum module_ev event, int id, struct outbound_entry* outbound))
451 {
452 	if(fptr == &iter_operate) return 1;
453 	else if(fptr == &val_operate) return 1;
454 	else if(fptr == &dns64_operate) return 1;
455 	else if(fptr == &respip_operate) return 1;
456 #ifdef WITH_PYTHONMODULE
457 	else if(fptr == &pythonmod_operate) return 1;
458 #endif
459 #ifdef WITH_DYNLIBMODULE
460 	else if(fptr == &dynlibmod_operate) return 1;
461 #endif
462 #ifdef USE_CACHEDB
463 	else if(fptr == &cachedb_operate) return 1;
464 #endif
465 #ifdef USE_IPSECMOD
466 	else if(fptr == &ipsecmod_operate) return 1;
467 #endif
468 #ifdef CLIENT_SUBNET
469 	else if(fptr == &subnetmod_operate) return 1;
470 #endif
471 #ifdef USE_IPSET
472 	else if(fptr == &ipset_operate) return 1;
473 #endif
474 	return 0;
475 }
476 
477 int
478 fptr_whitelist_mod_inform_super(void (*fptr)(
479         struct module_qstate* qstate, int id, struct module_qstate* super))
480 {
481 	if(fptr == &iter_inform_super) return 1;
482 	else if(fptr == &val_inform_super) return 1;
483 	else if(fptr == &dns64_inform_super) return 1;
484 	else if(fptr == &respip_inform_super) return 1;
485 #ifdef WITH_PYTHONMODULE
486 	else if(fptr == &pythonmod_inform_super) return 1;
487 #endif
488 #ifdef WITH_DYNLIBMODULE
489 	else if(fptr == &dynlibmod_inform_super) return 1;
490 #endif
491 #ifdef USE_CACHEDB
492 	else if(fptr == &cachedb_inform_super) return 1;
493 #endif
494 #ifdef USE_IPSECMOD
495 	else if(fptr == &ipsecmod_inform_super) return 1;
496 #endif
497 #ifdef CLIENT_SUBNET
498 	else if(fptr == &subnetmod_inform_super) return 1;
499 #endif
500 #ifdef USE_IPSET
501 	else if(fptr == &ipset_inform_super) return 1;
502 #endif
503 	return 0;
504 }
505 
506 int
507 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
508         int id))
509 {
510 	if(fptr == &iter_clear) return 1;
511 	else if(fptr == &val_clear) return 1;
512 	else if(fptr == &dns64_clear) return 1;
513 	else if(fptr == &respip_clear) return 1;
514 #ifdef WITH_PYTHONMODULE
515 	else if(fptr == &pythonmod_clear) return 1;
516 #endif
517 #ifdef WITH_DYNLIBMODULE
518 	else if(fptr == &dynlibmod_clear) return 1;
519 #endif
520 #ifdef USE_CACHEDB
521 	else if(fptr == &cachedb_clear) return 1;
522 #endif
523 #ifdef USE_IPSECMOD
524 	else if(fptr == &ipsecmod_clear) return 1;
525 #endif
526 #ifdef CLIENT_SUBNET
527 	else if(fptr == &subnetmod_clear) return 1;
528 #endif
529 #ifdef USE_IPSET
530 	else if(fptr == &ipset_clear) return 1;
531 #endif
532 	return 0;
533 }
534 
535 int
536 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
537 {
538 	if(fptr == &iter_get_mem) return 1;
539 	else if(fptr == &val_get_mem) return 1;
540 	else if(fptr == &dns64_get_mem) return 1;
541 	else if(fptr == &respip_get_mem) return 1;
542 #ifdef WITH_PYTHONMODULE
543 	else if(fptr == &pythonmod_get_mem) return 1;
544 #endif
545 #ifdef WITH_DYNLIBMODULE
546 	else if(fptr == &dynlibmod_get_mem) return 1;
547 #endif
548 #ifdef USE_CACHEDB
549 	else if(fptr == &cachedb_get_mem) return 1;
550 #endif
551 #ifdef USE_IPSECMOD
552 	else if(fptr == &ipsecmod_get_mem) return 1;
553 #endif
554 #ifdef CLIENT_SUBNET
555 	else if(fptr == &subnetmod_get_mem) return 1;
556 #endif
557 #ifdef USE_IPSET
558 	else if(fptr == &ipset_get_mem) return 1;
559 #endif
560 	return 0;
561 }
562 
563 int
564 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
565 {
566 	if(fptr == &worker_alloc_cleanup) return 1;
567 	return 0;
568 }
569 
570 int fptr_whitelist_tube_listen(tube_callback_type* fptr)
571 {
572 	if(fptr == &worker_handle_control_cmd) return 1;
573 	else if(fptr == &libworker_handle_control_cmd) return 1;
574 	return 0;
575 }
576 
577 int fptr_whitelist_mesh_cb(mesh_cb_func_type fptr)
578 {
579 	if(fptr == &libworker_fg_done_cb) return 1;
580 	else if(fptr == &libworker_bg_done_cb) return 1;
581 	else if(fptr == &libworker_event_done_cb) return 1;
582 	else if(fptr == &probe_answer_cb) return 1;
583 	else if(fptr == &auth_xfer_probe_lookup_callback) return 1;
584 	else if(fptr == &auth_xfer_transfer_lookup_callback) return 1;
585 	else if(fptr == &auth_zonemd_dnskey_lookup_callback) return 1;
586 	return 0;
587 }
588 
589 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
590 {
591 	if(fptr == &config_print_func) return 1;
592 	else if(fptr == &config_collate_func) return 1;
593 	else if(fptr == &remote_get_opt_ssl) return 1;
594 	return 0;
595 }
596 
597 int fptr_whitelist_inplace_cb_reply_generic(inplace_cb_reply_func_type* fptr,
598 	enum inplace_cb_list_type type)
599 {
600 #ifndef WITH_PYTHONMODULE
601 	(void)fptr;
602 #endif
603 	if(type == inplace_cb_reply) {
604 #ifdef WITH_PYTHONMODULE
605 		if(fptr == &python_inplace_cb_reply_generic) return 1;
606 #endif
607 #ifdef WITH_DYNLIBMODULE
608 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
609 #endif
610 	} else if(type == inplace_cb_reply_cache) {
611 #ifdef WITH_PYTHONMODULE
612 		if(fptr == &python_inplace_cb_reply_generic) return 1;
613 #endif
614 #ifdef WITH_DYNLIBMODULE
615 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
616 #endif
617 	} else if(type == inplace_cb_reply_local) {
618 #ifdef WITH_PYTHONMODULE
619 		if(fptr == &python_inplace_cb_reply_generic) return 1;
620 #endif
621 #ifdef WITH_DYNLIBMODULE
622 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
623 #endif
624 	} else if(type == inplace_cb_reply_servfail) {
625 #ifdef WITH_PYTHONMODULE
626 		if(fptr == &python_inplace_cb_reply_generic) return 1;
627 #endif
628 #ifdef WITH_DYNLIBMODULE
629 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
630 #endif
631 	}
632 	return 0;
633 }
634 
635 int fptr_whitelist_inplace_cb_query(inplace_cb_query_func_type* fptr)
636 {
637 #ifdef CLIENT_SUBNET
638 	if(fptr == &ecs_whitelist_check)
639 		return 1;
640 #endif
641 #ifdef WITH_PYTHONMODULE
642         if(fptr == &python_inplace_cb_query_generic)
643                 return 1;
644 #endif
645 #ifdef WITH_DYNLIBMODULE
646         if(fptr == &dynlib_inplace_cb_query_generic)
647                 return 1;
648 #endif
649 	(void)fptr;
650 	return 0;
651 }
652 
653 int fptr_whitelist_inplace_cb_edns_back_parsed(
654 	inplace_cb_edns_back_parsed_func_type* fptr)
655 {
656 #ifdef CLIENT_SUBNET
657 	if(fptr == &ecs_edns_back_parsed)
658 		return 1;
659 #else
660 	(void)fptr;
661 #endif
662 #ifdef WITH_PYTHONMODULE
663     if(fptr == &python_inplace_cb_edns_back_parsed_call)
664         return 1;
665 #endif
666 #ifdef WITH_DYNLIBMODULE
667     if(fptr == &dynlib_inplace_cb_edns_back_parsed)
668             return 1;
669 #endif
670 	return 0;
671 }
672 
673 int fptr_whitelist_inplace_cb_query_response(
674 	inplace_cb_query_response_func_type* fptr)
675 {
676 #ifdef CLIENT_SUBNET
677 	if(fptr == &ecs_query_response)
678 		return 1;
679 #else
680 	(void)fptr;
681 #endif
682 #ifdef WITH_PYTHONMODULE
683     if(fptr == &python_inplace_cb_query_response)
684         return 1;
685 #endif
686 #ifdef WITH_DYNLIBMODULE
687     if(fptr == &dynlib_inplace_cb_query_response)
688             return 1;
689 #endif
690 	return 0;
691 }
692 
693 int fptr_whitelist_serve_expired_lookup(serve_expired_lookup_func_type* fptr)
694 {
695 	if(fptr == &mesh_serve_expired_lookup)
696 		return 1;
697 	return 0;
698 }
699