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/cache/infra.h"
53 #include "services/cache/rrset.h"
54 #include "dns64/dns64.h"
55 #include "iterator/iterator.h"
56 #include "iterator/iter_fwd.h"
57 #include "validator/validator.h"
58 #include "validator/val_anchor.h"
59 #include "validator/val_nsec3.h"
60 #include "validator/val_sigcrypt.h"
61 #include "validator/val_kentry.h"
62 #include "validator/val_neg.h"
63 #include "validator/autotrust.h"
64 #include "util/data/msgreply.h"
65 #include "util/data/packed_rrset.h"
66 #include "util/storage/slabhash.h"
67 #include "util/storage/dnstree.h"
68 #include "util/locks.h"
69 #include "libunbound/libworker.h"
70 #include "libunbound/context.h"
71 #include "libunbound/worker.h"
72 #include "util/tube.h"
73 #include "util/config_file.h"
75 #include "winrc/win_svc.h"
78 #ifdef WITH_PYTHONMODULE
79 #include "pythonmod/pythonmod.h"
82 #include "cachedb/cachedb.h"
86 fptr_whitelist_comm_point(comm_point_callback_t *fptr)
88 if(fptr == &worker_handle_request) return 1;
89 else if(fptr == &outnet_udp_cb) return 1;
90 else if(fptr == &outnet_tcp_cb) return 1;
91 else if(fptr == &tube_handle_listen) return 1;
96 fptr_whitelist_comm_point_raw(comm_point_callback_t *fptr)
98 if(fptr == &tube_handle_listen) return 1;
99 else if(fptr == &tube_handle_write) return 1;
100 else if(fptr == &remote_accept_callback) return 1;
101 else if(fptr == &remote_control_callback) return 1;
106 fptr_whitelist_comm_timer(void (*fptr)(void*))
108 if(fptr == &pending_udp_timer_cb) return 1;
109 else if(fptr == &outnet_tcptimer) return 1;
110 else if(fptr == &pending_udp_timer_delay_cb) return 1;
111 else if(fptr == &worker_stat_timer_cb) return 1;
112 else if(fptr == &worker_probe_timer_cb) return 1;
114 else if(fptr == &wsvc_cron_cb) return 1;
120 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
122 if(fptr == &worker_sighandler) return 1;
126 int fptr_whitelist_start_accept(void (*fptr)(void*))
128 if(fptr == &worker_start_accept) return 1;
132 int fptr_whitelist_stop_accept(void (*fptr)(void*))
134 if(fptr == &worker_stop_accept) return 1;
139 fptr_whitelist_event(void (*fptr)(int, short, void *))
141 if(fptr == &comm_point_udp_callback) return 1;
142 else if(fptr == &comm_point_udp_ancil_callback) return 1;
143 else if(fptr == &comm_point_tcp_accept_callback) return 1;
144 else if(fptr == &comm_point_tcp_handle_callback) return 1;
145 else if(fptr == &comm_timer_callback) return 1;
146 else if(fptr == &comm_signal_callback) return 1;
147 else if(fptr == &comm_point_local_handle_callback) return 1;
148 else if(fptr == &comm_point_raw_handle_callback) return 1;
149 else if(fptr == &tube_handle_signal) return 1;
150 else if(fptr == &comm_base_handle_slow_accept) return 1;
152 else if(fptr == &worker_win_stop_cb) return 1;
158 fptr_whitelist_pending_udp(comm_point_callback_t *fptr)
160 if(fptr == &serviced_udp_callback) return 1;
161 else if(fptr == &worker_handle_reply) return 1;
162 else if(fptr == &libworker_handle_reply) return 1;
167 fptr_whitelist_pending_tcp(comm_point_callback_t *fptr)
169 if(fptr == &serviced_tcp_callback) return 1;
170 else if(fptr == &worker_handle_reply) return 1;
171 else if(fptr == &libworker_handle_reply) return 1;
176 fptr_whitelist_serviced_query(comm_point_callback_t *fptr)
178 if(fptr == &worker_handle_service_reply) return 1;
179 else if(fptr == &libworker_handle_service_reply) return 1;
184 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
186 if(fptr == &mesh_state_compare) return 1;
187 else if(fptr == &mesh_state_ref_compare) return 1;
188 else if(fptr == &addr_tree_compare) return 1;
189 else if(fptr == &local_zone_cmp) return 1;
190 else if(fptr == &local_data_cmp) return 1;
191 else if(fptr == &fwd_cmp) return 1;
192 else if(fptr == &pending_cmp) return 1;
193 else if(fptr == &serviced_cmp) return 1;
194 else if(fptr == &name_tree_compare) return 1;
195 else if(fptr == &order_lock_cmp) return 1;
196 else if(fptr == &codeline_cmp) return 1;
197 else if(fptr == &nsec3_hash_cmp) return 1;
198 else if(fptr == &mini_ev_cmp) return 1;
199 else if(fptr == &anchor_cmp) return 1;
200 else if(fptr == &canonical_tree_compare) return 1;
201 else if(fptr == &context_query_cmp) return 1;
202 else if(fptr == &val_neg_data_compare) return 1;
203 else if(fptr == &val_neg_zone_compare) return 1;
204 else if(fptr == &probetree_cmp) return 1;
205 else if(fptr == &replay_var_compare) return 1;
210 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_t fptr)
212 if(fptr == &msgreply_sizefunc) return 1;
213 else if(fptr == &ub_rrset_sizefunc) return 1;
214 else if(fptr == &infra_sizefunc) return 1;
215 else if(fptr == &key_entry_sizefunc) return 1;
216 else if(fptr == &rate_sizefunc) return 1;
217 else if(fptr == &test_slabhash_sizefunc) return 1;
222 fptr_whitelist_hash_compfunc(lruhash_compfunc_t fptr)
224 if(fptr == &query_info_compare) return 1;
225 else if(fptr == &ub_rrset_compare) return 1;
226 else if(fptr == &infra_compfunc) return 1;
227 else if(fptr == &key_entry_compfunc) return 1;
228 else if(fptr == &rate_compfunc) return 1;
229 else if(fptr == &test_slabhash_compfunc) return 1;
234 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_t fptr)
236 if(fptr == &query_entry_delete) return 1;
237 else if(fptr == &ub_rrset_key_delete) return 1;
238 else if(fptr == &infra_delkeyfunc) return 1;
239 else if(fptr == &key_entry_delkeyfunc) return 1;
240 else if(fptr == &rate_delkeyfunc) return 1;
241 else if(fptr == &test_slabhash_delkey) return 1;
246 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_t fptr)
248 if(fptr == &reply_info_delete) return 1;
249 else if(fptr == &rrset_data_delete) return 1;
250 else if(fptr == &infra_deldatafunc) return 1;
251 else if(fptr == &key_entry_deldatafunc) return 1;
252 else if(fptr == &rate_deldatafunc) return 1;
253 else if(fptr == &test_slabhash_deldata) return 1;
258 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_t fptr)
260 if(fptr == NULL) return 1;
261 else if(fptr == &rrset_markdel) return 1;
265 /** whitelist env->send_query callbacks */
267 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
268 uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
269 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
270 struct edns_option* opt_list, struct sockaddr_storage* addr,
271 socklen_t addrlen, uint8_t* zone, size_t zonelen,
272 struct module_qstate* q))
274 if(fptr == &worker_send_query) return 1;
275 else if(fptr == &libworker_send_query) return 1;
280 fptr_whitelist_modenv_detach_subs(void (*fptr)(
281 struct module_qstate* qstate))
283 if(fptr == &mesh_detach_subs) return 1;
288 fptr_whitelist_modenv_attach_sub(int (*fptr)(
289 struct module_qstate* qstate, struct query_info* qinfo,
290 uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
292 if(fptr == &mesh_attach_sub) return 1;
297 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
299 if(fptr == &mesh_state_delete) return 1;
304 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
305 struct module_qstate* qstate, struct query_info* qinfo,
306 uint16_t flags, int prime, int valrec))
308 if(fptr == &mesh_detect_cycle) return 1;
313 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
315 if(fptr == &iter_init) return 1;
316 else if(fptr == &val_init) return 1;
317 else if(fptr == &dns64_init) return 1;
318 #ifdef WITH_PYTHONMODULE
319 else if(fptr == &pythonmod_init) return 1;
322 else if(fptr == &cachedb_init) return 1;
328 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
330 if(fptr == &iter_deinit) return 1;
331 else if(fptr == &val_deinit) return 1;
332 else if(fptr == &dns64_deinit) return 1;
333 #ifdef WITH_PYTHONMODULE
334 else if(fptr == &pythonmod_deinit) return 1;
337 else if(fptr == &cachedb_deinit) return 1;
343 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
344 enum module_ev event, int id, struct outbound_entry* outbound))
346 if(fptr == &iter_operate) return 1;
347 else if(fptr == &val_operate) return 1;
348 else if(fptr == &dns64_operate) return 1;
349 #ifdef WITH_PYTHONMODULE
350 else if(fptr == &pythonmod_operate) return 1;
353 else if(fptr == &cachedb_operate) return 1;
359 fptr_whitelist_mod_inform_super(void (*fptr)(
360 struct module_qstate* qstate, int id, struct module_qstate* super))
362 if(fptr == &iter_inform_super) return 1;
363 else if(fptr == &val_inform_super) return 1;
364 else if(fptr == &dns64_inform_super) return 1;
365 #ifdef WITH_PYTHONMODULE
366 else if(fptr == &pythonmod_inform_super) return 1;
369 else if(fptr == &cachedb_inform_super) return 1;
375 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
378 if(fptr == &iter_clear) return 1;
379 else if(fptr == &val_clear) return 1;
380 else if(fptr == &dns64_clear) return 1;
381 #ifdef WITH_PYTHONMODULE
382 else if(fptr == &pythonmod_clear) return 1;
385 else if(fptr == &cachedb_clear) return 1;
391 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
393 if(fptr == &iter_get_mem) return 1;
394 else if(fptr == &val_get_mem) return 1;
395 else if(fptr == &dns64_get_mem) return 1;
396 #ifdef WITH_PYTHONMODULE
397 else if(fptr == &pythonmod_get_mem) return 1;
400 else if(fptr == &cachedb_get_mem) return 1;
406 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
408 if(fptr == &worker_alloc_cleanup) return 1;
412 int fptr_whitelist_tube_listen(tube_callback_t* fptr)
414 if(fptr == &worker_handle_control_cmd) return 1;
415 else if(fptr == &libworker_handle_control_cmd) return 1;
419 int fptr_whitelist_mesh_cb(mesh_cb_func_t fptr)
421 if(fptr == &libworker_fg_done_cb) return 1;
422 else if(fptr == &libworker_bg_done_cb) return 1;
423 else if(fptr == &libworker_event_done_cb) return 1;
424 else if(fptr == &probe_answer_cb) return 1;
428 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
430 if(fptr == &config_print_func) return 1;
431 else if(fptr == &config_collate_func) return 1;
432 else if(fptr == &remote_get_opt_ssl) return 1;