2 * util/fptr_wlist.c - function pointer whitelists.
4 * Copyright (c) 2007, 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 * 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.
43 * Due to the listing nature, this file violates all the modularization
44 * boundaries in the program.
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"
77 #include "winrc/win_svc.h"
79 #include "respip/respip.h"
81 #ifdef WITH_PYTHONMODULE
82 #include "pythonmod/pythonmod.h"
85 #include "cachedb/cachedb.h"
88 #include "ipsecmod/ipsecmod.h"
91 #include "edns-subnet/subnetmod.h"
95 fptr_whitelist_comm_point(comm_point_callback_type *fptr)
97 if(fptr == &worker_handle_request) return 1;
98 else if(fptr == &outnet_udp_cb) return 1;
99 else if(fptr == &outnet_tcp_cb) return 1;
100 else if(fptr == &tube_handle_listen) return 1;
101 else if(fptr == &auth_xfer_probe_udp_callback) return 1;
102 else if(fptr == &auth_xfer_transfer_tcp_callback) return 1;
103 else if(fptr == &auth_xfer_transfer_http_callback) return 1;
108 fptr_whitelist_comm_point_raw(comm_point_callback_type *fptr)
110 if(fptr == &tube_handle_listen) return 1;
111 else if(fptr == &tube_handle_write) return 1;
112 else if(fptr == &remote_accept_callback) return 1;
113 else if(fptr == &remote_control_callback) return 1;
118 fptr_whitelist_comm_timer(void (*fptr)(void*))
120 if(fptr == &pending_udp_timer_cb) return 1;
121 else if(fptr == &outnet_tcptimer) return 1;
122 else if(fptr == &pending_udp_timer_delay_cb) return 1;
123 else if(fptr == &worker_stat_timer_cb) return 1;
124 else if(fptr == &worker_probe_timer_cb) return 1;
126 else if(fptr == &wsvc_cron_cb) return 1;
128 else if(fptr == &auth_xfer_timer) return 1;
129 else if(fptr == &auth_xfer_probe_timer_callback) return 1;
130 else if(fptr == &auth_xfer_transfer_timer_callback) return 1;
135 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
137 if(fptr == &worker_sighandler) return 1;
141 int fptr_whitelist_start_accept(void (*fptr)(void*))
143 if(fptr == &worker_start_accept) return 1;
147 int fptr_whitelist_stop_accept(void (*fptr)(void*))
149 if(fptr == &worker_stop_accept) return 1;
154 fptr_whitelist_event(void (*fptr)(int, short, void *))
156 if(fptr == &comm_point_udp_callback) return 1;
157 else if(fptr == &comm_point_udp_ancil_callback) return 1;
158 else if(fptr == &comm_point_tcp_accept_callback) return 1;
159 else if(fptr == &comm_point_tcp_handle_callback) return 1;
160 else if(fptr == &comm_timer_callback) return 1;
161 else if(fptr == &comm_signal_callback) return 1;
162 else if(fptr == &comm_point_local_handle_callback) return 1;
163 else if(fptr == &comm_point_raw_handle_callback) return 1;
164 else if(fptr == &tube_handle_signal) return 1;
165 else if(fptr == &comm_base_handle_slow_accept) return 1;
166 else if(fptr == &comm_point_http_handle_callback) return 1;
168 else if(fptr == &worker_win_stop_cb) return 1;
174 fptr_whitelist_pending_udp(comm_point_callback_type *fptr)
176 if(fptr == &serviced_udp_callback) return 1;
177 else if(fptr == &worker_handle_reply) return 1;
178 else if(fptr == &libworker_handle_reply) return 1;
183 fptr_whitelist_pending_tcp(comm_point_callback_type *fptr)
185 if(fptr == &serviced_tcp_callback) return 1;
186 else if(fptr == &worker_handle_reply) return 1;
187 else if(fptr == &libworker_handle_reply) return 1;
192 fptr_whitelist_serviced_query(comm_point_callback_type *fptr)
194 if(fptr == &worker_handle_service_reply) return 1;
195 else if(fptr == &libworker_handle_service_reply) return 1;
200 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
202 if(fptr == &mesh_state_compare) return 1;
203 else if(fptr == &mesh_state_ref_compare) return 1;
204 else if(fptr == &addr_tree_compare) return 1;
205 else if(fptr == &local_zone_cmp) return 1;
206 else if(fptr == &local_data_cmp) return 1;
207 else if(fptr == &fwd_cmp) return 1;
208 else if(fptr == &pending_cmp) return 1;
209 else if(fptr == &serviced_cmp) return 1;
210 else if(fptr == &name_tree_compare) return 1;
211 else if(fptr == &order_lock_cmp) return 1;
212 else if(fptr == &codeline_cmp) return 1;
213 else if(fptr == &nsec3_hash_cmp) return 1;
214 else if(fptr == &mini_ev_cmp) return 1;
215 else if(fptr == &anchor_cmp) return 1;
216 else if(fptr == &canonical_tree_compare) return 1;
217 else if(fptr == &context_query_cmp) return 1;
218 else if(fptr == &val_neg_data_compare) return 1;
219 else if(fptr == &val_neg_zone_compare) return 1;
220 else if(fptr == &probetree_cmp) return 1;
221 else if(fptr == &replay_var_compare) return 1;
222 else if(fptr == &view_cmp) return 1;
223 else if(fptr == &auth_zone_cmp) return 1;
224 else if(fptr == &auth_data_cmp) return 1;
225 else if(fptr == &auth_xfer_cmp) return 1;
230 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_type fptr)
232 if(fptr == &msgreply_sizefunc) return 1;
233 else if(fptr == &ub_rrset_sizefunc) return 1;
234 else if(fptr == &infra_sizefunc) return 1;
235 else if(fptr == &key_entry_sizefunc) return 1;
236 else if(fptr == &rate_sizefunc) return 1;
237 else if(fptr == &ip_rate_sizefunc) return 1;
238 else if(fptr == &test_slabhash_sizefunc) return 1;
240 else if(fptr == &msg_cache_sizefunc) return 1;
243 else if(fptr == &dnsc_shared_secrets_sizefunc) return 1;
244 else if(fptr == &dnsc_nonces_sizefunc) return 1;
250 fptr_whitelist_hash_compfunc(lruhash_compfunc_type fptr)
252 if(fptr == &query_info_compare) return 1;
253 else if(fptr == &ub_rrset_compare) return 1;
254 else if(fptr == &infra_compfunc) return 1;
255 else if(fptr == &key_entry_compfunc) return 1;
256 else if(fptr == &rate_compfunc) return 1;
257 else if(fptr == &ip_rate_compfunc) return 1;
258 else if(fptr == &test_slabhash_compfunc) return 1;
260 else if(fptr == &dnsc_shared_secrets_compfunc) return 1;
261 else if(fptr == &dnsc_nonces_compfunc) return 1;
267 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_type fptr)
269 if(fptr == &query_entry_delete) return 1;
270 else if(fptr == &ub_rrset_key_delete) return 1;
271 else if(fptr == &infra_delkeyfunc) return 1;
272 else if(fptr == &key_entry_delkeyfunc) return 1;
273 else if(fptr == &rate_delkeyfunc) return 1;
274 else if(fptr == &ip_rate_delkeyfunc) return 1;
275 else if(fptr == &test_slabhash_delkey) return 1;
277 else if(fptr == &dnsc_shared_secrets_delkeyfunc) return 1;
278 else if(fptr == &dnsc_nonces_delkeyfunc) return 1;
284 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_type fptr)
286 if(fptr == &reply_info_delete) return 1;
287 else if(fptr == &rrset_data_delete) return 1;
288 else if(fptr == &infra_deldatafunc) return 1;
289 else if(fptr == &key_entry_deldatafunc) return 1;
290 else if(fptr == &rate_deldatafunc) return 1;
291 else if(fptr == &test_slabhash_deldata) return 1;
293 else if(fptr == &subnet_data_delete) return 1;
296 else if(fptr == &dnsc_shared_secrets_deldatafunc) return 1;
297 else if(fptr == &dnsc_nonces_deldatafunc) return 1;
303 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_type fptr)
305 if(fptr == NULL) return 1;
306 else if(fptr == &rrset_markdel) return 1;
308 else if(fptr == &subnet_markdel) return 1;
313 /** whitelist env->send_query callbacks */
315 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
316 struct query_info* qinfo, uint16_t flags, int dnssec, int want_dnssec,
317 int nocaps, struct sockaddr_storage* addr, socklen_t addrlen,
318 uint8_t* zone, size_t zonelen, int ssl_upstream, char* tls_auth_name,
319 struct module_qstate* q))
321 if(fptr == &worker_send_query) return 1;
322 else if(fptr == &libworker_send_query) return 1;
327 fptr_whitelist_modenv_detach_subs(void (*fptr)(
328 struct module_qstate* qstate))
330 if(fptr == &mesh_detach_subs) return 1;
335 fptr_whitelist_modenv_attach_sub(int (*fptr)(
336 struct module_qstate* qstate, struct query_info* qinfo,
337 uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
339 if(fptr == &mesh_attach_sub) return 1;
344 fptr_whitelist_modenv_add_sub(int (*fptr)(
345 struct module_qstate* qstate, struct query_info* qinfo,
346 uint16_t qflags, int prime, int valrec, struct module_qstate** newq,
347 struct mesh_state** sub))
349 if(fptr == &mesh_add_sub) return 1;
354 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
356 if(fptr == &mesh_state_delete) return 1;
361 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
362 struct module_qstate* qstate, struct query_info* qinfo,
363 uint16_t flags, int prime, int valrec))
365 if(fptr == &mesh_detect_cycle) return 1;
370 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
372 if(fptr == &iter_init) return 1;
373 else if(fptr == &val_init) return 1;
374 else if(fptr == &dns64_init) return 1;
375 else if(fptr == &respip_init) return 1;
376 #ifdef WITH_PYTHONMODULE
377 else if(fptr == &pythonmod_init) return 1;
380 else if(fptr == &cachedb_init) return 1;
383 else if(fptr == &ipsecmod_init) return 1;
386 else if(fptr == &subnetmod_init) return 1;
392 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
394 if(fptr == &iter_deinit) return 1;
395 else if(fptr == &val_deinit) return 1;
396 else if(fptr == &dns64_deinit) return 1;
397 else if(fptr == &respip_deinit) return 1;
398 #ifdef WITH_PYTHONMODULE
399 else if(fptr == &pythonmod_deinit) return 1;
402 else if(fptr == &cachedb_deinit) return 1;
405 else if(fptr == &ipsecmod_deinit) return 1;
408 else if(fptr == &subnetmod_deinit) return 1;
414 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
415 enum module_ev event, int id, struct outbound_entry* outbound))
417 if(fptr == &iter_operate) return 1;
418 else if(fptr == &val_operate) return 1;
419 else if(fptr == &dns64_operate) return 1;
420 else if(fptr == &respip_operate) return 1;
421 #ifdef WITH_PYTHONMODULE
422 else if(fptr == &pythonmod_operate) return 1;
425 else if(fptr == &cachedb_operate) return 1;
428 else if(fptr == &ipsecmod_operate) return 1;
431 else if(fptr == &subnetmod_operate) return 1;
437 fptr_whitelist_mod_inform_super(void (*fptr)(
438 struct module_qstate* qstate, int id, struct module_qstate* super))
440 if(fptr == &iter_inform_super) return 1;
441 else if(fptr == &val_inform_super) return 1;
442 else if(fptr == &dns64_inform_super) return 1;
443 else if(fptr == &respip_inform_super) return 1;
444 #ifdef WITH_PYTHONMODULE
445 else if(fptr == &pythonmod_inform_super) return 1;
448 else if(fptr == &cachedb_inform_super) return 1;
451 else if(fptr == &ipsecmod_inform_super) return 1;
454 else if(fptr == &subnetmod_inform_super) return 1;
460 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
463 if(fptr == &iter_clear) return 1;
464 else if(fptr == &val_clear) return 1;
465 else if(fptr == &dns64_clear) return 1;
466 else if(fptr == &respip_clear) return 1;
467 #ifdef WITH_PYTHONMODULE
468 else if(fptr == &pythonmod_clear) return 1;
471 else if(fptr == &cachedb_clear) return 1;
474 else if(fptr == &ipsecmod_clear) return 1;
477 else if(fptr == &subnetmod_clear) return 1;
483 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
485 if(fptr == &iter_get_mem) return 1;
486 else if(fptr == &val_get_mem) return 1;
487 else if(fptr == &dns64_get_mem) return 1;
488 else if(fptr == &respip_get_mem) return 1;
489 #ifdef WITH_PYTHONMODULE
490 else if(fptr == &pythonmod_get_mem) return 1;
493 else if(fptr == &cachedb_get_mem) return 1;
496 else if(fptr == &ipsecmod_get_mem) return 1;
499 else if(fptr == &subnetmod_get_mem) return 1;
505 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
507 if(fptr == &worker_alloc_cleanup) return 1;
511 int fptr_whitelist_tube_listen(tube_callback_type* fptr)
513 if(fptr == &worker_handle_control_cmd) return 1;
514 else if(fptr == &libworker_handle_control_cmd) return 1;
518 int fptr_whitelist_mesh_cb(mesh_cb_func_type fptr)
520 if(fptr == &libworker_fg_done_cb) return 1;
521 else if(fptr == &libworker_bg_done_cb) return 1;
522 else if(fptr == &libworker_event_done_cb) return 1;
523 else if(fptr == &probe_answer_cb) return 1;
524 else if(fptr == &auth_xfer_probe_lookup_callback) return 1;
525 else if(fptr == &auth_xfer_transfer_lookup_callback) return 1;
529 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
531 if(fptr == &config_print_func) return 1;
532 else if(fptr == &config_collate_func) return 1;
533 else if(fptr == &remote_get_opt_ssl) return 1;
537 int fptr_whitelist_inplace_cb_reply_generic(inplace_cb_reply_func_type* fptr,
538 enum inplace_cb_list_type type)
540 #ifndef WITH_PYTHONMODULE
543 if(type == inplace_cb_reply) {
544 #ifdef WITH_PYTHONMODULE
545 if(fptr == &python_inplace_cb_reply_generic) return 1;
547 } else if(type == inplace_cb_reply_cache) {
548 #ifdef WITH_PYTHONMODULE
549 if(fptr == &python_inplace_cb_reply_generic) return 1;
551 } else if(type == inplace_cb_reply_local) {
552 #ifdef WITH_PYTHONMODULE
553 if(fptr == &python_inplace_cb_reply_generic) return 1;
555 } else if(type == inplace_cb_reply_servfail) {
556 #ifdef WITH_PYTHONMODULE
557 if(fptr == &python_inplace_cb_reply_generic) return 1;
563 int fptr_whitelist_inplace_cb_query(inplace_cb_query_func_type* fptr)
566 if(fptr == &ecs_whitelist_check)
569 #ifdef WITH_PYTHONMODULE
570 if(fptr == &python_inplace_cb_query_generic)
577 int fptr_whitelist_inplace_cb_edns_back_parsed(
578 inplace_cb_edns_back_parsed_func_type* fptr)
581 if(fptr == &ecs_edns_back_parsed)
589 int fptr_whitelist_inplace_cb_query_response(
590 inplace_cb_query_response_func_type* fptr)
593 if(fptr == &ecs_query_response)