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"
84 #ifdef WITH_DYNLIBMODULE
85 #include "dynlibmod/dynlibmod.h"
88 #include "cachedb/cachedb.h"
91 #include "ipsecmod/ipsecmod.h"
94 #include "edns-subnet/subnetmod.h"
97 #include "ipset/ipset.h"
100 #include "dnstap/dtstream.h"
104 fptr_whitelist_comm_point(comm_point_callback_type *fptr)
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;
117 fptr_whitelist_comm_point_raw(comm_point_callback_type *fptr)
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;
127 fptr_whitelist_comm_timer(void (*fptr)(void*))
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;
136 else if(fptr == &wsvc_cron_cb) return 1;
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;
144 else if(fptr == &mq_wakeup_cb) return 1;
150 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
152 if(fptr == &worker_sighandler) return 1;
156 int fptr_whitelist_start_accept(void (*fptr)(void*))
158 if(fptr == &worker_start_accept) return 1;
162 int fptr_whitelist_stop_accept(void (*fptr)(void*))
164 if(fptr == &worker_stop_accept) return 1;
169 fptr_whitelist_event(void (*fptr)(int, short, void *))
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;
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;
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;
194 else if(fptr == &worker_win_stop_cb) return 1;
200 fptr_whitelist_pending_udp(comm_point_callback_type *fptr)
202 if(fptr == &serviced_udp_callback) return 1;
207 fptr_whitelist_pending_tcp(comm_point_callback_type *fptr)
209 if(fptr == &serviced_tcp_callback) return 1;
214 fptr_whitelist_serviced_query(comm_point_callback_type *fptr)
216 if(fptr == &worker_handle_service_reply) return 1;
217 else if(fptr == &libworker_handle_service_reply) return 1;
222 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
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;
255 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_type fptr)
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;
265 else if(fptr == &msg_cache_sizefunc) return 1;
268 else if(fptr == &dnsc_shared_secrets_sizefunc) return 1;
269 else if(fptr == &dnsc_nonces_sizefunc) return 1;
275 fptr_whitelist_hash_compfunc(lruhash_compfunc_type fptr)
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;
285 else if(fptr == &dnsc_shared_secrets_compfunc) return 1;
286 else if(fptr == &dnsc_nonces_compfunc) return 1;
292 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_type fptr)
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;
302 else if(fptr == &dnsc_shared_secrets_delkeyfunc) return 1;
303 else if(fptr == &dnsc_nonces_delkeyfunc) return 1;
309 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_type fptr)
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;
318 else if(fptr == &subnet_data_delete) return 1;
321 else if(fptr == &dnsc_shared_secrets_deldatafunc) return 1;
322 else if(fptr == &dnsc_nonces_deldatafunc) return 1;
328 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_type fptr)
330 if(fptr == NULL) return 1;
331 else if(fptr == &rrset_markdel) return 1;
333 else if(fptr == &subnet_markdel) return 1;
338 /** whitelist env->send_query callbacks */
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))
347 if(fptr == &worker_send_query) return 1;
348 else if(fptr == &libworker_send_query) return 1;
353 fptr_whitelist_modenv_detach_subs(void (*fptr)(
354 struct module_qstate* qstate))
356 if(fptr == &mesh_detach_subs) return 1;
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))
365 if(fptr == &mesh_attach_sub) return 1;
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))
375 if(fptr == &mesh_add_sub) return 1;
380 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
382 if(fptr == &mesh_state_delete) return 1;
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))
391 if(fptr == &mesh_detect_cycle) return 1;
396 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
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;
405 #ifdef WITH_DYNLIBMODULE
406 else if(fptr == &dynlibmod_init) return 1;
409 else if(fptr == &cachedb_init) return 1;
412 else if(fptr == &ipsecmod_init) return 1;
415 else if(fptr == &subnetmod_init) return 1;
418 else if(fptr == &ipset_init) return 1;
424 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
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;
433 #ifdef WITH_DYNLIBMODULE
434 else if(fptr == &dynlibmod_deinit) return 1;
437 else if(fptr == &cachedb_deinit) return 1;
440 else if(fptr == &ipsecmod_deinit) return 1;
443 else if(fptr == &subnetmod_deinit) return 1;
446 else if(fptr == &ipset_deinit) return 1;
452 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
453 enum module_ev event, int id, struct outbound_entry* outbound))
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;
462 #ifdef WITH_DYNLIBMODULE
463 else if(fptr == &dynlibmod_operate) return 1;
466 else if(fptr == &cachedb_operate) return 1;
469 else if(fptr == &ipsecmod_operate) return 1;
472 else if(fptr == &subnetmod_operate) return 1;
475 else if(fptr == &ipset_operate) return 1;
481 fptr_whitelist_mod_inform_super(void (*fptr)(
482 struct module_qstate* qstate, int id, struct module_qstate* super))
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;
491 #ifdef WITH_DYNLIBMODULE
492 else if(fptr == &dynlibmod_inform_super) return 1;
495 else if(fptr == &cachedb_inform_super) return 1;
498 else if(fptr == &ipsecmod_inform_super) return 1;
501 else if(fptr == &subnetmod_inform_super) return 1;
504 else if(fptr == &ipset_inform_super) return 1;
510 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
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;
520 #ifdef WITH_DYNLIBMODULE
521 else if(fptr == &dynlibmod_clear) return 1;
524 else if(fptr == &cachedb_clear) return 1;
527 else if(fptr == &ipsecmod_clear) return 1;
530 else if(fptr == &subnetmod_clear) return 1;
533 else if(fptr == &ipset_clear) return 1;
539 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
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;
548 #ifdef WITH_DYNLIBMODULE
549 else if(fptr == &dynlibmod_get_mem) return 1;
552 else if(fptr == &cachedb_get_mem) return 1;
555 else if(fptr == &ipsecmod_get_mem) return 1;
558 else if(fptr == &subnetmod_get_mem) return 1;
561 else if(fptr == &ipset_get_mem) return 1;
567 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
569 if(fptr == &worker_alloc_cleanup) return 1;
573 int fptr_whitelist_tube_listen(tube_callback_type* fptr)
575 if(fptr == &worker_handle_control_cmd) return 1;
576 else if(fptr == &libworker_handle_control_cmd) return 1;
580 int fptr_whitelist_mesh_cb(mesh_cb_func_type fptr)
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;
592 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
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;
600 int fptr_whitelist_inplace_cb_reply_generic(inplace_cb_reply_func_type* fptr,
601 enum inplace_cb_list_type type)
603 #ifndef WITH_PYTHONMODULE
606 if(type == inplace_cb_reply) {
607 #ifdef WITH_PYTHONMODULE
608 if(fptr == &python_inplace_cb_reply_generic) return 1;
610 #ifdef WITH_DYNLIBMODULE
611 if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
613 } else if(type == inplace_cb_reply_cache) {
614 #ifdef WITH_PYTHONMODULE
615 if(fptr == &python_inplace_cb_reply_generic) return 1;
617 #ifdef WITH_DYNLIBMODULE
618 if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
620 } else if(type == inplace_cb_reply_local) {
621 #ifdef WITH_PYTHONMODULE
622 if(fptr == &python_inplace_cb_reply_generic) return 1;
624 #ifdef WITH_DYNLIBMODULE
625 if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
627 } else if(type == inplace_cb_reply_servfail) {
628 #ifdef WITH_PYTHONMODULE
629 if(fptr == &python_inplace_cb_reply_generic) return 1;
631 #ifdef WITH_DYNLIBMODULE
632 if(fptr == &dynlib_inplace_cb_reply_generic) return 1;
638 int fptr_whitelist_inplace_cb_query(inplace_cb_query_func_type* fptr)
641 if(fptr == &ecs_whitelist_check)
644 #ifdef WITH_PYTHONMODULE
645 if(fptr == &python_inplace_cb_query_generic)
648 #ifdef WITH_DYNLIBMODULE
649 if(fptr == &dynlib_inplace_cb_query_generic)
656 int fptr_whitelist_inplace_cb_edns_back_parsed(
657 inplace_cb_edns_back_parsed_func_type* fptr)
660 if(fptr == &ecs_edns_back_parsed)
665 #ifdef WITH_PYTHONMODULE
666 if(fptr == &python_inplace_cb_edns_back_parsed_call)
669 #ifdef WITH_DYNLIBMODULE
670 if(fptr == &dynlib_inplace_cb_edns_back_parsed)
676 int fptr_whitelist_inplace_cb_query_response(
677 inplace_cb_query_response_func_type* fptr)
680 if(fptr == &ecs_query_response)
685 #ifdef WITH_PYTHONMODULE
686 if(fptr == &python_inplace_cb_query_response)
689 #ifdef WITH_DYNLIBMODULE
690 if(fptr == &dynlib_inplace_cb_query_response)
696 int fptr_whitelist_serve_expired_lookup(serve_expired_lookup_func_type* fptr)
698 if(fptr == &mesh_serve_expired_lookup)