xref: /freebsd/contrib/unbound/util/fptr_wlist.c (revision a91a2465)
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 	else if(fptr == &validate_suspend_timer_cb) return 1;
135 #ifdef UB_ON_WINDOWS
136 	else if(fptr == &wsvc_cron_cb) return 1;
137 #endif
138 	else if(fptr == &auth_xfer_timer) return 1;
139 	else if(fptr == &auth_xfer_probe_timer_callback) return 1;
140 	else if(fptr == &auth_xfer_transfer_timer_callback) return 1;
141 	else if(fptr == &mesh_serve_expired_callback) return 1;
142 	else if(fptr == &serviced_timer_cb) return 1;
143 #ifdef USE_DNSTAP
144 	else if(fptr == &mq_wakeup_cb) return 1;
145 #endif
146 	return 0;
147 }
148 
149 int
150 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
151 {
152 	if(fptr == &worker_sighandler) return 1;
153 	return 0;
154 }
155 
156 int fptr_whitelist_start_accept(void (*fptr)(void*))
157 {
158 	if(fptr == &worker_start_accept) return 1;
159 	return 0;
160 }
161 
162 int fptr_whitelist_stop_accept(void (*fptr)(void*))
163 {
164 	if(fptr == &worker_stop_accept) return 1;
165 	return 0;
166 }
167 
168 int
169 fptr_whitelist_event(void (*fptr)(int, short, void *))
170 {
171 	if(fptr == &comm_point_udp_callback) return 1;
172 #if defined(AF_INET6) && defined(IPV6_PKTINFO) && defined(HAVE_RECVMSG)
173 	else if(fptr == &comm_point_udp_ancil_callback) return 1;
174 #endif
175 	else if(fptr == &comm_point_tcp_accept_callback) return 1;
176 	else if(fptr == &comm_point_tcp_handle_callback) return 1;
177 	else if(fptr == &comm_timer_callback) return 1;
178 	else if(fptr == &comm_signal_callback) return 1;
179 	else if(fptr == &comm_point_local_handle_callback) return 1;
180 	else if(fptr == &comm_point_raw_handle_callback) return 1;
181 	else if(fptr == &tube_handle_signal) return 1;
182 	else if(fptr == &comm_base_handle_slow_accept) return 1;
183 	else if(fptr == &comm_point_http_handle_callback) return 1;
184 #ifdef USE_DNSTAP
185 	else if(fptr == &dtio_output_cb) return 1;
186 	else if(fptr == &dtio_cmd_cb) return 1;
187 	else if(fptr == &dtio_reconnect_timeout_cb) return 1;
188 	else if(fptr == &dtio_stop_timer_cb) return 1;
189 	else if(fptr == &dtio_stop_ev_cb) return 1;
190 	else if(fptr == &dtio_tap_callback) return 1;
191 	else if(fptr == &dtio_mainfdcallback) return 1;
192 #endif
193 #ifdef UB_ON_WINDOWS
194 	else if(fptr == &worker_win_stop_cb) return 1;
195 #endif
196 	return 0;
197 }
198 
199 int
200 fptr_whitelist_pending_udp(comm_point_callback_type *fptr)
201 {
202 	if(fptr == &serviced_udp_callback) return 1;
203 	return 0;
204 }
205 
206 int
207 fptr_whitelist_pending_tcp(comm_point_callback_type *fptr)
208 {
209 	if(fptr == &serviced_tcp_callback) return 1;
210 	return 0;
211 }
212 
213 int
214 fptr_whitelist_serviced_query(comm_point_callback_type *fptr)
215 {
216 	if(fptr == &worker_handle_service_reply) return 1;
217 	else if(fptr == &libworker_handle_service_reply) return 1;
218 	return 0;
219 }
220 
221 int
222 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
223 {
224 	if(fptr == &mesh_state_compare) return 1;
225 	else if(fptr == &mesh_state_ref_compare) return 1;
226 	else if(fptr == &addr_tree_compare) return 1;
227 	else if(fptr == &addr_tree_addrport_compare) return 1;
228 	else if(fptr == &local_zone_cmp) return 1;
229 	else if(fptr == &local_data_cmp) return 1;
230 	else if(fptr == &fwd_cmp) return 1;
231 	else if(fptr == &pending_cmp) return 1;
232 	else if(fptr == &serviced_cmp) return 1;
233 	else if(fptr == &reuse_cmp) return 1;
234 	else if(fptr == &reuse_id_cmp) return 1;
235 	else if(fptr == &name_tree_compare) return 1;
236 	else if(fptr == &order_lock_cmp) return 1;
237 	else if(fptr == &codeline_cmp) return 1;
238 	else if(fptr == &nsec3_hash_cmp) return 1;
239 	else if(fptr == &mini_ev_cmp) return 1;
240 	else if(fptr == &anchor_cmp) return 1;
241 	else if(fptr == &canonical_tree_compare) return 1;
242 	else if(fptr == &context_query_cmp) return 1;
243 	else if(fptr == &val_neg_data_compare) return 1;
244 	else if(fptr == &val_neg_zone_compare) return 1;
245 	else if(fptr == &probetree_cmp) return 1;
246 	else if(fptr == &replay_var_compare) return 1;
247 	else if(fptr == &view_cmp) return 1;
248 	else if(fptr == &auth_zone_cmp) return 1;
249 	else if(fptr == &auth_data_cmp) return 1;
250 	else if(fptr == &auth_xfer_cmp) return 1;
251 	return 0;
252 }
253 
254 int
255 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_type fptr)
256 {
257 	if(fptr == &msgreply_sizefunc) return 1;
258 	else if(fptr == &ub_rrset_sizefunc) return 1;
259 	else if(fptr == &infra_sizefunc) return 1;
260 	else if(fptr == &key_entry_sizefunc) return 1;
261 	else if(fptr == &rate_sizefunc) return 1;
262 	else if(fptr == &ip_rate_sizefunc) return 1;
263 	else if(fptr == &test_slabhash_sizefunc) return 1;
264 #ifdef CLIENT_SUBNET
265 	else if(fptr == &msg_cache_sizefunc) return 1;
266 #endif
267 #ifdef USE_DNSCRYPT
268 	else if(fptr == &dnsc_shared_secrets_sizefunc) return 1;
269 	else if(fptr == &dnsc_nonces_sizefunc) return 1;
270 #endif
271 	return 0;
272 }
273 
274 int
275 fptr_whitelist_hash_compfunc(lruhash_compfunc_type fptr)
276 {
277 	if(fptr == &query_info_compare) return 1;
278 	else if(fptr == &ub_rrset_compare) return 1;
279 	else if(fptr == &infra_compfunc) return 1;
280 	else if(fptr == &key_entry_compfunc) return 1;
281 	else if(fptr == &rate_compfunc) return 1;
282 	else if(fptr == &ip_rate_compfunc) return 1;
283 	else if(fptr == &test_slabhash_compfunc) return 1;
284 #ifdef USE_DNSCRYPT
285 	else if(fptr == &dnsc_shared_secrets_compfunc) return 1;
286 	else if(fptr == &dnsc_nonces_compfunc) return 1;
287 #endif
288 	return 0;
289 }
290 
291 int
292 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_type fptr)
293 {
294 	if(fptr == &query_entry_delete) return 1;
295 	else if(fptr == &ub_rrset_key_delete) return 1;
296 	else if(fptr == &infra_delkeyfunc) return 1;
297 	else if(fptr == &key_entry_delkeyfunc) return 1;
298 	else if(fptr == &rate_delkeyfunc) return 1;
299 	else if(fptr == &ip_rate_delkeyfunc) return 1;
300 	else if(fptr == &test_slabhash_delkey) return 1;
301 #ifdef USE_DNSCRYPT
302 	else if(fptr == &dnsc_shared_secrets_delkeyfunc) return 1;
303 	else if(fptr == &dnsc_nonces_delkeyfunc) return 1;
304 #endif
305 	return 0;
306 }
307 
308 int
309 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_type fptr)
310 {
311 	if(fptr == &reply_info_delete) return 1;
312 	else if(fptr == &rrset_data_delete) return 1;
313 	else if(fptr == &infra_deldatafunc) return 1;
314 	else if(fptr == &key_entry_deldatafunc) return 1;
315 	else if(fptr == &rate_deldatafunc) return 1;
316 	else if(fptr == &test_slabhash_deldata) return 1;
317 #ifdef CLIENT_SUBNET
318 	else if(fptr == &subnet_data_delete) return 1;
319 #endif
320 #ifdef USE_DNSCRYPT
321 	else if(fptr == &dnsc_shared_secrets_deldatafunc) return 1;
322 	else if(fptr == &dnsc_nonces_deldatafunc) return 1;
323 #endif
324 	return 0;
325 }
326 
327 int
328 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_type fptr)
329 {
330 	if(fptr == NULL) return 1;
331 	else if(fptr == &rrset_markdel) return 1;
332 #ifdef CLIENT_SUBNET
333 	else if(fptr == &subnet_markdel) return 1;
334 #endif
335 	return 0;
336 }
337 
338 /** whitelist env->send_query callbacks */
339 int
340 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
341 	struct query_info* qinfo, uint16_t flags, int dnssec, int want_dnssec,
342 	int nocaps, int check_ratelimit, struct sockaddr_storage* addr,
343 	socklen_t addrlen, uint8_t* zone, size_t zonelen, int tcp_upstream,
344 	int ssl_upstream, char* tls_auth_name, struct module_qstate* q,
345 	int* was_ratelimited))
346 {
347 	if(fptr == &worker_send_query) return 1;
348 	else if(fptr == &libworker_send_query) return 1;
349 	return 0;
350 }
351 
352 int
353 fptr_whitelist_modenv_detach_subs(void (*fptr)(
354         struct module_qstate* qstate))
355 {
356 	if(fptr == &mesh_detach_subs) return 1;
357 	return 0;
358 }
359 
360 int
361 fptr_whitelist_modenv_attach_sub(int (*fptr)(
362         struct module_qstate* qstate, struct query_info* qinfo,
363         uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
364 {
365 	if(fptr == &mesh_attach_sub) return 1;
366 	return 0;
367 }
368 
369 int
370 fptr_whitelist_modenv_add_sub(int (*fptr)(
371         struct module_qstate* qstate, struct query_info* qinfo,
372         uint16_t qflags, int prime, int valrec, struct module_qstate** newq,
373 	struct mesh_state** sub))
374 {
375 	if(fptr == &mesh_add_sub) return 1;
376 	return 0;
377 }
378 
379 int
380 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
381 {
382 	if(fptr == &mesh_state_delete) return 1;
383 	return 0;
384 }
385 
386 int
387 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
388 	struct module_qstate* qstate, struct query_info* qinfo,
389 	uint16_t flags, int prime, int valrec))
390 {
391 	if(fptr == &mesh_detect_cycle) return 1;
392 	return 0;
393 }
394 
395 int
396 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
397 {
398 	if(fptr == &iter_init) return 1;
399 	else if(fptr == &val_init) return 1;
400 	else if(fptr == &dns64_init) return 1;
401 	else if(fptr == &respip_init) return 1;
402 #ifdef WITH_PYTHONMODULE
403 	else if(fptr == &pythonmod_init) return 1;
404 #endif
405 #ifdef WITH_DYNLIBMODULE
406 	else if(fptr == &dynlibmod_init) return 1;
407 #endif
408 #ifdef USE_CACHEDB
409 	else if(fptr == &cachedb_init) return 1;
410 #endif
411 #ifdef USE_IPSECMOD
412 	else if(fptr == &ipsecmod_init) return 1;
413 #endif
414 #ifdef CLIENT_SUBNET
415 	else if(fptr == &subnetmod_init) return 1;
416 #endif
417 #ifdef USE_IPSET
418 	else if(fptr == &ipset_init) return 1;
419 #endif
420 	return 0;
421 }
422 
423 int
424 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
425 {
426 	if(fptr == &iter_deinit) return 1;
427 	else if(fptr == &val_deinit) return 1;
428 	else if(fptr == &dns64_deinit) return 1;
429 	else if(fptr == &respip_deinit) return 1;
430 #ifdef WITH_PYTHONMODULE
431 	else if(fptr == &pythonmod_deinit) return 1;
432 #endif
433 #ifdef WITH_DYNLIBMODULE
434 	else if(fptr == &dynlibmod_deinit) return 1;
435 #endif
436 #ifdef USE_CACHEDB
437 	else if(fptr == &cachedb_deinit) return 1;
438 #endif
439 #ifdef USE_IPSECMOD
440 	else if(fptr == &ipsecmod_deinit) return 1;
441 #endif
442 #ifdef CLIENT_SUBNET
443 	else if(fptr == &subnetmod_deinit) return 1;
444 #endif
445 #ifdef USE_IPSET
446 	else if(fptr == &ipset_deinit) return 1;
447 #endif
448 	return 0;
449 }
450 
451 int
452 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
453         enum module_ev event, int id, struct outbound_entry* outbound))
454 {
455 	if(fptr == &iter_operate) return 1;
456 	else if(fptr == &val_operate) return 1;
457 	else if(fptr == &dns64_operate) return 1;
458 	else if(fptr == &respip_operate) return 1;
459 #ifdef WITH_PYTHONMODULE
460 	else if(fptr == &pythonmod_operate) return 1;
461 #endif
462 #ifdef WITH_DYNLIBMODULE
463 	else if(fptr == &dynlibmod_operate) return 1;
464 #endif
465 #ifdef USE_CACHEDB
466 	else if(fptr == &cachedb_operate) return 1;
467 #endif
468 #ifdef USE_IPSECMOD
469 	else if(fptr == &ipsecmod_operate) return 1;
470 #endif
471 #ifdef CLIENT_SUBNET
472 	else if(fptr == &subnetmod_operate) return 1;
473 #endif
474 #ifdef USE_IPSET
475 	else if(fptr == &ipset_operate) return 1;
476 #endif
477 	return 0;
478 }
479 
480 int
481 fptr_whitelist_mod_inform_super(void (*fptr)(
482         struct module_qstate* qstate, int id, struct module_qstate* super))
483 {
484 	if(fptr == &iter_inform_super) return 1;
485 	else if(fptr == &val_inform_super) return 1;
486 	else if(fptr == &dns64_inform_super) return 1;
487 	else if(fptr == &respip_inform_super) return 1;
488 #ifdef WITH_PYTHONMODULE
489 	else if(fptr == &pythonmod_inform_super) return 1;
490 #endif
491 #ifdef WITH_DYNLIBMODULE
492 	else if(fptr == &dynlibmod_inform_super) return 1;
493 #endif
494 #ifdef USE_CACHEDB
495 	else if(fptr == &cachedb_inform_super) return 1;
496 #endif
497 #ifdef USE_IPSECMOD
498 	else if(fptr == &ipsecmod_inform_super) return 1;
499 #endif
500 #ifdef CLIENT_SUBNET
501 	else if(fptr == &subnetmod_inform_super) return 1;
502 #endif
503 #ifdef USE_IPSET
504 	else if(fptr == &ipset_inform_super) return 1;
505 #endif
506 	return 0;
507 }
508 
509 int
510 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
511         int id))
512 {
513 	if(fptr == &iter_clear) return 1;
514 	else if(fptr == &val_clear) return 1;
515 	else if(fptr == &dns64_clear) return 1;
516 	else if(fptr == &respip_clear) return 1;
517 #ifdef WITH_PYTHONMODULE
518 	else if(fptr == &pythonmod_clear) return 1;
519 #endif
520 #ifdef WITH_DYNLIBMODULE
521 	else if(fptr == &dynlibmod_clear) return 1;
522 #endif
523 #ifdef USE_CACHEDB
524 	else if(fptr == &cachedb_clear) return 1;
525 #endif
526 #ifdef USE_IPSECMOD
527 	else if(fptr == &ipsecmod_clear) return 1;
528 #endif
529 #ifdef CLIENT_SUBNET
530 	else if(fptr == &subnetmod_clear) return 1;
531 #endif
532 #ifdef USE_IPSET
533 	else if(fptr == &ipset_clear) return 1;
534 #endif
535 	return 0;
536 }
537 
538 int
539 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
540 {
541 	if(fptr == &iter_get_mem) return 1;
542 	else if(fptr == &val_get_mem) return 1;
543 	else if(fptr == &dns64_get_mem) return 1;
544 	else if(fptr == &respip_get_mem) return 1;
545 #ifdef WITH_PYTHONMODULE
546 	else if(fptr == &pythonmod_get_mem) return 1;
547 #endif
548 #ifdef WITH_DYNLIBMODULE
549 	else if(fptr == &dynlibmod_get_mem) return 1;
550 #endif
551 #ifdef USE_CACHEDB
552 	else if(fptr == &cachedb_get_mem) return 1;
553 #endif
554 #ifdef USE_IPSECMOD
555 	else if(fptr == &ipsecmod_get_mem) return 1;
556 #endif
557 #ifdef CLIENT_SUBNET
558 	else if(fptr == &subnetmod_get_mem) return 1;
559 #endif
560 #ifdef USE_IPSET
561 	else if(fptr == &ipset_get_mem) return 1;
562 #endif
563 	return 0;
564 }
565 
566 int
567 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
568 {
569 	if(fptr == &worker_alloc_cleanup) return 1;
570 	return 0;
571 }
572 
573 int fptr_whitelist_tube_listen(tube_callback_type* fptr)
574 {
575 	if(fptr == &worker_handle_control_cmd) return 1;
576 	else if(fptr == &libworker_handle_control_cmd) return 1;
577 	return 0;
578 }
579 
580 int fptr_whitelist_mesh_cb(mesh_cb_func_type fptr)
581 {
582 	if(fptr == &libworker_fg_done_cb) return 1;
583 	else if(fptr == &libworker_bg_done_cb) return 1;
584 	else if(fptr == &libworker_event_done_cb) return 1;
585 	else if(fptr == &probe_answer_cb) return 1;
586 	else if(fptr == &auth_xfer_probe_lookup_callback) return 1;
587 	else if(fptr == &auth_xfer_transfer_lookup_callback) return 1;
588 	else if(fptr == &auth_zonemd_dnskey_lookup_callback) return 1;
589 	return 0;
590 }
591 
592 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
593 {
594 	if(fptr == &config_print_func) return 1;
595 	else if(fptr == &config_collate_func) return 1;
596 	else if(fptr == &remote_get_opt_ssl) return 1;
597 	return 0;
598 }
599 
600 int fptr_whitelist_inplace_cb_reply_generic(inplace_cb_reply_func_type* fptr,
601 	enum inplace_cb_list_type type)
602 {
603 #ifndef WITH_PYTHONMODULE
604 	(void)fptr;
605 #endif
606 	if(type == inplace_cb_reply) {
607 #ifdef WITH_PYTHONMODULE
608 		if(fptr == &python_inplace_cb_reply_generic) return 1;
609 #endif
610 #ifdef WITH_DYNLIBMODULE
611 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
612 #endif
613 	} else if(type == inplace_cb_reply_cache) {
614 #ifdef WITH_PYTHONMODULE
615 		if(fptr == &python_inplace_cb_reply_generic) return 1;
616 #endif
617 #ifdef WITH_DYNLIBMODULE
618 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
619 #endif
620 	} else if(type == inplace_cb_reply_local) {
621 #ifdef WITH_PYTHONMODULE
622 		if(fptr == &python_inplace_cb_reply_generic) return 1;
623 #endif
624 #ifdef WITH_DYNLIBMODULE
625 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
626 #endif
627 	} else if(type == inplace_cb_reply_servfail) {
628 #ifdef WITH_PYTHONMODULE
629 		if(fptr == &python_inplace_cb_reply_generic) return 1;
630 #endif
631 #ifdef WITH_DYNLIBMODULE
632 		if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
633 #endif
634 	}
635 	return 0;
636 }
637 
638 int fptr_whitelist_inplace_cb_query(inplace_cb_query_func_type* fptr)
639 {
640 #ifdef CLIENT_SUBNET
641 	if(fptr == &ecs_whitelist_check)
642 		return 1;
643 #endif
644 #ifdef WITH_PYTHONMODULE
645         if(fptr == &python_inplace_cb_query_generic)
646                 return 1;
647 #endif
648 #ifdef WITH_DYNLIBMODULE
649         if(fptr == &dynlib_inplace_cb_query_generic)
650                 return 1;
651 #endif
652 	(void)fptr;
653 	return 0;
654 }
655 
656 int fptr_whitelist_inplace_cb_edns_back_parsed(
657 	inplace_cb_edns_back_parsed_func_type* fptr)
658 {
659 #ifdef CLIENT_SUBNET
660 	if(fptr == &ecs_edns_back_parsed)
661 		return 1;
662 #else
663 	(void)fptr;
664 #endif
665 #ifdef WITH_PYTHONMODULE
666     if(fptr == &python_inplace_cb_edns_back_parsed_call)
667         return 1;
668 #endif
669 #ifdef WITH_DYNLIBMODULE
670     if(fptr == &dynlib_inplace_cb_edns_back_parsed)
671             return 1;
672 #endif
673 	return 0;
674 }
675 
676 int fptr_whitelist_inplace_cb_query_response(
677 	inplace_cb_query_response_func_type* fptr)
678 {
679 #ifdef CLIENT_SUBNET
680 	if(fptr == &ecs_query_response)
681 		return 1;
682 #else
683 	(void)fptr;
684 #endif
685 #ifdef WITH_PYTHONMODULE
686     if(fptr == &python_inplace_cb_query_response)
687         return 1;
688 #endif
689 #ifdef WITH_DYNLIBMODULE
690     if(fptr == &dynlib_inplace_cb_query_response)
691             return 1;
692 #endif
693 	return 0;
694 }
695 
696 int fptr_whitelist_serve_expired_lookup(serve_expired_lookup_func_type* fptr)
697 {
698 	if(fptr == &mesh_serve_expired_lookup)
699 		return 1;
700 	return 0;
701 }
702