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 "iterator/iterator.h"
55 #include "iterator/iter_fwd.h"
56 #include "validator/validator.h"
57 #include "validator/val_anchor.h"
58 #include "validator/val_nsec3.h"
59 #include "validator/val_sigcrypt.h"
60 #include "validator/val_kentry.h"
61 #include "validator/val_neg.h"
62 #include "validator/autotrust.h"
63 #include "util/data/msgreply.h"
64 #include "util/data/packed_rrset.h"
65 #include "util/storage/slabhash.h"
66 #include "util/storage/dnstree.h"
67 #include "util/locks.h"
68 #include "libunbound/libworker.h"
69 #include "libunbound/context.h"
70 #include "libunbound/worker.h"
71 #include "util/tube.h"
72 #include "util/config_file.h"
74 #include "winrc/win_svc.h"
77 #ifdef WITH_PYTHONMODULE
78 #include "pythonmod/pythonmod.h"
82 fptr_whitelist_comm_point(comm_point_callback_t *fptr)
84 if(fptr == &worker_handle_request) return 1;
85 else if(fptr == &outnet_udp_cb) return 1;
86 else if(fptr == &outnet_tcp_cb) return 1;
87 else if(fptr == &tube_handle_listen) return 1;
92 fptr_whitelist_comm_point_raw(comm_point_callback_t *fptr)
94 if(fptr == &tube_handle_listen) return 1;
95 else if(fptr == &tube_handle_write) return 1;
96 else if(fptr == &remote_accept_callback) return 1;
97 else if(fptr == &remote_control_callback) return 1;
102 fptr_whitelist_comm_timer(void (*fptr)(void*))
104 if(fptr == &pending_udp_timer_cb) return 1;
105 else if(fptr == &outnet_tcptimer) return 1;
106 else if(fptr == &pending_udp_timer_delay_cb) return 1;
107 else if(fptr == &worker_stat_timer_cb) return 1;
108 else if(fptr == &worker_probe_timer_cb) return 1;
110 else if(fptr == &wsvc_cron_cb) return 1;
116 fptr_whitelist_comm_signal(void (*fptr)(int, void*))
118 if(fptr == &worker_sighandler) return 1;
122 int fptr_whitelist_start_accept(void (*fptr)(void*))
124 if(fptr == &worker_start_accept) return 1;
128 int fptr_whitelist_stop_accept(void (*fptr)(void*))
130 if(fptr == &worker_stop_accept) return 1;
135 fptr_whitelist_event(void (*fptr)(int, short, void *))
137 if(fptr == &comm_point_udp_callback) return 1;
138 else if(fptr == &comm_point_udp_ancil_callback) return 1;
139 else if(fptr == &comm_point_tcp_accept_callback) return 1;
140 else if(fptr == &comm_point_tcp_handle_callback) return 1;
141 else if(fptr == &comm_timer_callback) return 1;
142 else if(fptr == &comm_signal_callback) return 1;
143 else if(fptr == &comm_point_local_handle_callback) return 1;
144 else if(fptr == &comm_point_raw_handle_callback) return 1;
145 else if(fptr == &tube_handle_signal) return 1;
146 else if(fptr == &comm_base_handle_slow_accept) return 1;
148 else if(fptr == &worker_win_stop_cb) return 1;
154 fptr_whitelist_pending_udp(comm_point_callback_t *fptr)
156 if(fptr == &serviced_udp_callback) return 1;
157 else if(fptr == &worker_handle_reply) return 1;
158 else if(fptr == &libworker_handle_reply) return 1;
163 fptr_whitelist_pending_tcp(comm_point_callback_t *fptr)
165 if(fptr == &serviced_tcp_callback) return 1;
166 else if(fptr == &worker_handle_reply) return 1;
167 else if(fptr == &libworker_handle_reply) return 1;
172 fptr_whitelist_serviced_query(comm_point_callback_t *fptr)
174 if(fptr == &worker_handle_service_reply) return 1;
175 else if(fptr == &libworker_handle_service_reply) return 1;
180 fptr_whitelist_rbtree_cmp(int (*fptr) (const void *, const void *))
182 if(fptr == &mesh_state_compare) return 1;
183 else if(fptr == &mesh_state_ref_compare) return 1;
184 else if(fptr == &addr_tree_compare) return 1;
185 else if(fptr == &local_zone_cmp) return 1;
186 else if(fptr == &local_data_cmp) return 1;
187 else if(fptr == &fwd_cmp) return 1;
188 else if(fptr == &pending_cmp) return 1;
189 else if(fptr == &serviced_cmp) return 1;
190 else if(fptr == &name_tree_compare) return 1;
191 else if(fptr == &order_lock_cmp) return 1;
192 else if(fptr == &codeline_cmp) return 1;
193 else if(fptr == &nsec3_hash_cmp) return 1;
194 else if(fptr == &mini_ev_cmp) return 1;
195 else if(fptr == &anchor_cmp) return 1;
196 else if(fptr == &canonical_tree_compare) return 1;
197 else if(fptr == &context_query_cmp) return 1;
198 else if(fptr == &val_neg_data_compare) return 1;
199 else if(fptr == &val_neg_zone_compare) return 1;
200 else if(fptr == &probetree_cmp) return 1;
201 else if(fptr == &replay_var_compare) return 1;
206 fptr_whitelist_hash_sizefunc(lruhash_sizefunc_t fptr)
208 if(fptr == &msgreply_sizefunc) return 1;
209 else if(fptr == &ub_rrset_sizefunc) return 1;
210 else if(fptr == &infra_sizefunc) return 1;
211 else if(fptr == &key_entry_sizefunc) return 1;
212 else if(fptr == &test_slabhash_sizefunc) return 1;
217 fptr_whitelist_hash_compfunc(lruhash_compfunc_t fptr)
219 if(fptr == &query_info_compare) return 1;
220 else if(fptr == &ub_rrset_compare) return 1;
221 else if(fptr == &infra_compfunc) return 1;
222 else if(fptr == &key_entry_compfunc) return 1;
223 else if(fptr == &test_slabhash_compfunc) return 1;
228 fptr_whitelist_hash_delkeyfunc(lruhash_delkeyfunc_t fptr)
230 if(fptr == &query_entry_delete) return 1;
231 else if(fptr == &ub_rrset_key_delete) return 1;
232 else if(fptr == &infra_delkeyfunc) return 1;
233 else if(fptr == &key_entry_delkeyfunc) return 1;
234 else if(fptr == &test_slabhash_delkey) return 1;
239 fptr_whitelist_hash_deldatafunc(lruhash_deldatafunc_t fptr)
241 if(fptr == &reply_info_delete) return 1;
242 else if(fptr == &rrset_data_delete) return 1;
243 else if(fptr == &infra_deldatafunc) return 1;
244 else if(fptr == &key_entry_deldatafunc) return 1;
245 else if(fptr == &test_slabhash_deldata) return 1;
250 fptr_whitelist_hash_markdelfunc(lruhash_markdelfunc_t fptr)
252 if(fptr == NULL) return 1;
253 else if(fptr == &rrset_markdel) return 1;
257 /** whitelist env->send_query callbacks */
259 fptr_whitelist_modenv_send_query(struct outbound_entry* (*fptr)(
260 uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
261 uint16_t flags, int dnssec, int want_dnssec,
262 struct sockaddr_storage* addr, socklen_t addrlen,
263 uint8_t* zone, size_t zonelen,
264 struct module_qstate* q))
266 if(fptr == &worker_send_query) return 1;
267 else if(fptr == &libworker_send_query) return 1;
272 fptr_whitelist_modenv_detach_subs(void (*fptr)(
273 struct module_qstate* qstate))
275 if(fptr == &mesh_detach_subs) return 1;
280 fptr_whitelist_modenv_attach_sub(int (*fptr)(
281 struct module_qstate* qstate, struct query_info* qinfo,
282 uint16_t qflags, int prime, struct module_qstate** newq))
284 if(fptr == &mesh_attach_sub) return 1;
289 fptr_whitelist_modenv_kill_sub(void (*fptr)(struct module_qstate* newq))
291 if(fptr == &mesh_state_delete) return 1;
296 fptr_whitelist_modenv_detect_cycle(int (*fptr)(
297 struct module_qstate* qstate, struct query_info* qinfo,
298 uint16_t flags, int prime))
300 if(fptr == &mesh_detect_cycle) return 1;
305 fptr_whitelist_mod_init(int (*fptr)(struct module_env* env, int id))
307 if(fptr == &iter_init) return 1;
308 else if(fptr == &val_init) return 1;
309 #ifdef WITH_PYTHONMODULE
310 else if(fptr == &pythonmod_init) return 1;
316 fptr_whitelist_mod_deinit(void (*fptr)(struct module_env* env, int id))
318 if(fptr == &iter_deinit) return 1;
319 else if(fptr == &val_deinit) return 1;
320 #ifdef WITH_PYTHONMODULE
321 else if(fptr == &pythonmod_deinit) return 1;
327 fptr_whitelist_mod_operate(void (*fptr)(struct module_qstate* qstate,
328 enum module_ev event, int id, struct outbound_entry* outbound))
330 if(fptr == &iter_operate) return 1;
331 else if(fptr == &val_operate) return 1;
332 #ifdef WITH_PYTHONMODULE
333 else if(fptr == &pythonmod_operate) return 1;
339 fptr_whitelist_mod_inform_super(void (*fptr)(
340 struct module_qstate* qstate, int id, struct module_qstate* super))
342 if(fptr == &iter_inform_super) return 1;
343 else if(fptr == &val_inform_super) return 1;
344 #ifdef WITH_PYTHONMODULE
345 else if(fptr == &pythonmod_inform_super) return 1;
351 fptr_whitelist_mod_clear(void (*fptr)(struct module_qstate* qstate,
354 if(fptr == &iter_clear) return 1;
355 else if(fptr == &val_clear) return 1;
356 #ifdef WITH_PYTHONMODULE
357 else if(fptr == &pythonmod_clear) return 1;
363 fptr_whitelist_mod_get_mem(size_t (*fptr)(struct module_env* env, int id))
365 if(fptr == &iter_get_mem) return 1;
366 else if(fptr == &val_get_mem) return 1;
367 #ifdef WITH_PYTHONMODULE
368 else if(fptr == &pythonmod_get_mem) return 1;
374 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
376 if(fptr == &worker_alloc_cleanup) return 1;
380 int fptr_whitelist_tube_listen(tube_callback_t* fptr)
382 if(fptr == &worker_handle_control_cmd) return 1;
383 else if(fptr == &libworker_handle_control_cmd) return 1;
387 int fptr_whitelist_mesh_cb(mesh_cb_func_t fptr)
389 if(fptr == &libworker_fg_done_cb) return 1;
390 else if(fptr == &libworker_bg_done_cb) return 1;
391 else if(fptr == &libworker_event_done_cb) return 1;
392 else if(fptr == &probe_answer_cb) return 1;
396 int fptr_whitelist_print_func(void (*fptr)(char*,void*))
398 if(fptr == &config_print_func) return 1;
399 else if(fptr == &config_collate_func) return 1;
400 else if(fptr == &remote_get_opt_ssl) return 1;