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"
83 fptr_whitelist_comm_point(comm_point_callback_t *fptr)
85 if(fptr == &worker_handle_request) return 1;
86 else if(fptr == &outnet_udp_cb) return 1;
87 else if(fptr == &outnet_tcp_cb) return 1;
88 else if(fptr == &tube_handle_listen) return 1;
93 fptr_whitelist_comm_point_raw(comm_point_callback_t *fptr)
95 if(fptr == &tube_handle_listen) return 1;
96 else if(fptr == &tube_handle_write) return 1;
97 else if(fptr == &remote_accept_callback) return 1;
98 else if(fptr == &remote_control_callback) return 1;
103 fptr_whitelist_comm_timer(void (*fptr)(void*))
105 if(fptr == &pending_udp_timer_cb) return 1;
106 else if(fptr == &outnet_tcptimer) return 1;
107 else if(fptr == &pending_udp_timer_delay_cb) return 1;
108 else if(fptr == &worker_stat_timer_cb) return 1;
109 else if(fptr == &worker_probe_timer_cb) return 1;
111 else if(fptr == &wsvc_cron_cb) return 1;
117 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
119 if(fptr == &worker_sighandler) return 1;
123 int fptr_whitelist_start_accept(void (*fptr)(void*))
125 if(fptr == &worker_start_accept) return 1;
129 int fptr_whitelist_stop_accept(void (*fptr)(void*))
131 if(fptr == &worker_stop_accept) return 1;
136 fptr_whitelist_event(void (*fptr)(int, short, void *))
138 if(fptr == &comm_point_udp_callback) return 1;
139 else if(fptr == &comm_point_udp_ancil_callback) return 1;
140 else if(fptr == &comm_point_tcp_accept_callback) return 1;
141 else if(fptr == &comm_point_tcp_handle_callback) return 1;
142 else if(fptr == &comm_timer_callback) return 1;
143 else if(fptr == &comm_signal_callback) return 1;
144 else if(fptr == &comm_point_local_handle_callback) return 1;
145 else if(fptr == &comm_point_raw_handle_callback) return 1;
146 else if(fptr == &tube_handle_signal) return 1;
147 else if(fptr == &comm_base_handle_slow_accept) return 1;
149 else if(fptr == &worker_win_stop_cb) return 1;
155 fptr_whitelist_pending_udp(comm_point_callback_t *fptr)
157 if(fptr == &serviced_udp_callback) return 1;
158 else if(fptr == &worker_handle_reply) return 1;
159 else if(fptr == &libworker_handle_reply) return 1;
164 fptr_whitelist_pending_tcp(comm_point_callback_t *fptr)
166 if(fptr == &serviced_tcp_callback) return 1;
167 else if(fptr == &worker_handle_reply) return 1;
168 else if(fptr == &libworker_handle_reply) return 1;
173 fptr_whitelist_serviced_query(comm_point_callback_t *fptr)
175 if(fptr == &worker_handle_service_reply) return 1;
176 else if(fptr == &libworker_handle_service_reply) return 1;
181 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
183 if(fptr == &mesh_state_compare) return 1;
184 else if(fptr == &mesh_state_ref_compare) return 1;
185 else if(fptr == &addr_tree_compare) return 1;
186 else if(fptr == &local_zone_cmp) return 1;
187 else if(fptr == &local_data_cmp) return 1;
188 else if(fptr == &fwd_cmp) return 1;
189 else if(fptr == &pending_cmp) return 1;
190 else if(fptr == &serviced_cmp) return 1;
191 else if(fptr == &name_tree_compare) return 1;
192 else if(fptr == &order_lock_cmp) return 1;
193 else if(fptr == &codeline_cmp) return 1;
194 else if(fptr == &nsec3_hash_cmp) return 1;
195 else if(fptr == &mini_ev_cmp) return 1;
196 else if(fptr == &anchor_cmp) return 1;
197 else if(fptr == &canonical_tree_compare) return 1;
198 else if(fptr == &context_query_cmp) return 1;
199 else if(fptr == &val_neg_data_compare) return 1;
200 else if(fptr == &val_neg_zone_compare) return 1;
201 else if(fptr == &probetree_cmp) return 1;
202 else if(fptr == &replay_var_compare) return 1;
207 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_t fptr)
209 if(fptr == &msgreply_sizefunc) return 1;
210 else if(fptr == &ub_rrset_sizefunc) return 1;
211 else if(fptr == &infra_sizefunc) return 1;
212 else if(fptr == &key_entry_sizefunc) return 1;
213 else if(fptr == &rate_sizefunc) return 1;
214 else if(fptr == &test_slabhash_sizefunc) return 1;
219 fptr_whitelist_hash_compfunc(lruhash_compfunc_t fptr)
221 if(fptr == &query_info_compare) return 1;
222 else if(fptr == &ub_rrset_compare) return 1;
223 else if(fptr == &infra_compfunc) return 1;
224 else if(fptr == &key_entry_compfunc) return 1;
225 else if(fptr == &rate_compfunc) return 1;
226 else if(fptr == &test_slabhash_compfunc) return 1;
231 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_t fptr)
233 if(fptr == &query_entry_delete) return 1;
234 else if(fptr == &ub_rrset_key_delete) return 1;
235 else if(fptr == &infra_delkeyfunc) return 1;
236 else if(fptr == &key_entry_delkeyfunc) return 1;
237 else if(fptr == &rate_delkeyfunc) return 1;
238 else if(fptr == &test_slabhash_delkey) return 1;
243 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_t fptr)
245 if(fptr == &reply_info_delete) return 1;
246 else if(fptr == &rrset_data_delete) return 1;
247 else if(fptr == &infra_deldatafunc) return 1;
248 else if(fptr == &key_entry_deldatafunc) return 1;
249 else if(fptr == &rate_deldatafunc) return 1;
250 else if(fptr == &test_slabhash_deldata) return 1;
255 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_t fptr)
257 if(fptr == NULL) return 1;
258 else if(fptr == &rrset_markdel) return 1;
262 /** whitelist env->send_query callbacks */
264 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
265 uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
266 uint16_t flags, int dnssec, int want_dnssec, int nocaps,
267 struct sockaddr_storage* addr, socklen_t addrlen,
268 uint8_t* zone, size_t zonelen,
269 struct module_qstate* q))
271 if(fptr == &worker_send_query) return 1;
272 else if(fptr == &libworker_send_query) return 1;
277 fptr_whitelist_modenv_detach_subs(void (*fptr)(
278 struct module_qstate* qstate))
280 if(fptr == &mesh_detach_subs) return 1;
285 fptr_whitelist_modenv_attach_sub(int (*fptr)(
286 struct module_qstate* qstate, struct query_info* qinfo,
287 uint16_t qflags, int prime, int valrec, struct module_qstate** newq))
289 if(fptr == &mesh_attach_sub) return 1;
294 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
296 if(fptr == &mesh_state_delete) return 1;
301 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
302 struct module_qstate* qstate, struct query_info* qinfo,
303 uint16_t flags, int prime, int valrec))
305 if(fptr == &mesh_detect_cycle) return 1;
310 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
312 if(fptr == &iter_init) return 1;
313 else if(fptr == &val_init) return 1;
314 else if(fptr == &dns64_init) return 1;
315 #ifdef WITH_PYTHONMODULE
316 else if(fptr == &pythonmod_init) return 1;
322 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
324 if(fptr == &iter_deinit) return 1;
325 else if(fptr == &val_deinit) return 1;
326 else if(fptr == &dns64_deinit) return 1;
327 #ifdef WITH_PYTHONMODULE
328 else if(fptr == &pythonmod_deinit) return 1;
334 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
335 enum module_ev event, int id, struct outbound_entry* outbound))
337 if(fptr == &iter_operate) return 1;
338 else if(fptr == &val_operate) return 1;
339 else if(fptr == &dns64_operate) return 1;
340 #ifdef WITH_PYTHONMODULE
341 else if(fptr == &pythonmod_operate) return 1;
347 fptr_whitelist_mod_inform_super(void (*fptr)(
348 struct module_qstate* qstate, int id, struct module_qstate* super))
350 if(fptr == &iter_inform_super) return 1;
351 else if(fptr == &val_inform_super) return 1;
352 else if(fptr == &dns64_inform_super) return 1;
353 #ifdef WITH_PYTHONMODULE
354 else if(fptr == &pythonmod_inform_super) return 1;
360 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
363 if(fptr == &iter_clear) return 1;
364 else if(fptr == &val_clear) return 1;
365 else if(fptr == &dns64_clear) return 1;
366 #ifdef WITH_PYTHONMODULE
367 else if(fptr == &pythonmod_clear) return 1;
373 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
375 if(fptr == &iter_get_mem) return 1;
376 else if(fptr == &val_get_mem) return 1;
377 else if(fptr == &dns64_get_mem) return 1;
378 #ifdef WITH_PYTHONMODULE
379 else if(fptr == &pythonmod_get_mem) return 1;
385 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
387 if(fptr == &worker_alloc_cleanup) return 1;
391 int fptr_whitelist_tube_listen(tube_callback_t* fptr)
393 if(fptr == &worker_handle_control_cmd) return 1;
394 else if(fptr == &libworker_handle_control_cmd) return 1;
398 int fptr_whitelist_mesh_cb(mesh_cb_func_t fptr)
400 if(fptr == &libworker_fg_done_cb) return 1;
401 else if(fptr == &libworker_bg_done_cb) return 1;
402 else if(fptr == &libworker_event_done_cb) return 1;
403 else if(fptr == &probe_answer_cb) return 1;
407 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
409 if(fptr == &config_print_func) return 1;
410 else if(fptr == &config_collate_func) return 1;
411 else if(fptr == &remote_get_opt_ssl) return 1;