Commit | Line | Data |
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2fe58dfd SE |
1 | /* Core interface of secnet, to be used by all modules */ |
2 | ||
3 | #ifndef secnet_h | |
4 | #define secnet_h | |
5 | ||
59635212 | 6 | #include "config.h" |
2fe58dfd | 7 | #include <stdlib.h> |
2fe58dfd | 8 | #include <stdarg.h> |
4f5e39ec | 9 | #include <stdio.h> |
b02b720a IJ |
10 | #include <string.h> |
11 | #include <assert.h> | |
2fe58dfd | 12 | #include <sys/poll.h> |
8689b3a9 SE |
13 | #include <sys/types.h> |
14 | #include <sys/time.h> | |
2fe58dfd | 15 | #include <netinet/in.h> |
2fe58dfd | 16 | |
2fe58dfd | 17 | typedef char *string_t; |
fe5e9cc4 | 18 | typedef const char *cstring_t; |
09aecaa2 IJ |
19 | |
20 | #define False (_Bool)0 | |
21 | #define True (_Bool)1 | |
22 | typedef _Bool bool_t; | |
2fe58dfd | 23 | |
794f2398 | 24 | #define ASSERT(x) do { if (!(x)) { fatal("assertion failed line %d file " \ |
4f5e39ec | 25 | __FILE__,__LINE__); } } while(0) |
2fe58dfd | 26 | |
fcbc5905 IJ |
27 | /* from version.c */ |
28 | ||
29 | extern char version[]; | |
30 | ||
08ee90a2 IJ |
31 | /* from logmsg.c */ |
32 | extern uint32_t message_level; | |
33 | extern bool_t secnet_is_daemon; | |
34 | extern struct log_if *system_log; | |
35 | ||
36 | /* from process.c */ | |
37 | extern void start_signal_handling(void); | |
38 | ||
2fe58dfd SE |
39 | /***** CONFIGURATION support *****/ |
40 | ||
baa06aeb SE |
41 | extern bool_t just_check_config; /* If True then we're going to exit after |
42 | reading the configuration file */ | |
b2a56f7c | 43 | extern bool_t background; /* If True then we'll eventually run as a daemon */ |
baa06aeb | 44 | |
2fe58dfd SE |
45 | typedef struct dict dict_t; /* Configuration dictionary */ |
46 | typedef struct closure closure_t; | |
47 | typedef struct item item_t; | |
48 | typedef struct list list_t; /* A list of items */ | |
49 | ||
50 | /* Configuration file location, for error-reporting */ | |
51 | struct cloc { | |
fe5e9cc4 | 52 | cstring_t file; |
1caa23ff | 53 | int line; |
2fe58dfd SE |
54 | }; |
55 | ||
56 | /* Modules export closures, which can be invoked from the configuration file. | |
57 | "Invoking" a closure usually returns another closure (of a different | |
58 | type), but can actually return any configuration object. */ | |
59 | typedef list_t *(apply_fn)(closure_t *self, struct cloc loc, | |
60 | dict_t *context, list_t *data); | |
61 | struct closure { | |
fe5e9cc4 | 62 | cstring_t description; /* For debugging */ |
2fe58dfd SE |
63 | uint32_t type; /* Central registry... */ |
64 | apply_fn *apply; | |
65 | void *interface; /* Interface for use inside secnet; depends on type */ | |
66 | }; | |
67 | ||
68 | enum types { t_null, t_bool, t_string, t_number, t_dict, t_closure }; | |
69 | struct item { | |
70 | enum types type; | |
71 | union { | |
72 | bool_t bool; | |
73 | string_t string; | |
74 | uint32_t number; | |
75 | dict_t *dict; | |
76 | closure_t *closure; | |
77 | } data; | |
78 | struct cloc loc; | |
79 | }; | |
80 | ||
ff05a229 SE |
81 | /* Note that it is unwise to use this structure directly; use the list |
82 | manipulation functions instead. */ | |
2fe58dfd SE |
83 | struct list { |
84 | item_t *item; | |
85 | struct list *next; | |
86 | }; | |
87 | ||
88 | /* In the following two lookup functions, NULL means 'not found' */ | |
89 | /* Lookup a value in the specified dictionary, or its parents */ | |
fe5e9cc4 | 90 | extern list_t *dict_lookup(dict_t *dict, cstring_t key); |
2fe58dfd | 91 | /* Lookup a value in just the specified dictionary */ |
fe5e9cc4 | 92 | extern list_t *dict_lookup_primitive(dict_t *dict, cstring_t key); |
2fe58dfd | 93 | /* Add a value to the specified dictionary */ |
fe5e9cc4 | 94 | extern void dict_add(dict_t *dict, cstring_t key, list_t *val); |
2fe58dfd | 95 | /* Obtain an array of keys in the dictionary. malloced; caller frees */ |
fe5e9cc4 | 96 | extern cstring_t *dict_keys(dict_t *dict); |
2fe58dfd SE |
97 | |
98 | /* List-manipulation functions */ | |
99 | extern list_t *list_new(void); | |
1caa23ff | 100 | extern int32_t list_length(list_t *a); |
2fe58dfd SE |
101 | extern list_t *list_append(list_t *a, item_t *i); |
102 | extern list_t *list_append_list(list_t *a, list_t *b); | |
103 | /* Returns an item from the list (index starts at 0), or NULL */ | |
1caa23ff | 104 | extern item_t *list_elem(list_t *l, int32_t index); |
2fe58dfd SE |
105 | |
106 | /* Convenience functions */ | |
107 | extern list_t *new_closure(closure_t *cl); | |
fe5e9cc4 SE |
108 | extern void add_closure(dict_t *dict, cstring_t name, apply_fn apply); |
109 | extern void *find_cl_if(dict_t *dict, cstring_t name, uint32_t type, | |
110 | bool_t fail_if_invalid, cstring_t desc, | |
2fe58dfd | 111 | struct cloc loc); |
fe5e9cc4 SE |
112 | extern item_t *dict_find_item(dict_t *dict, cstring_t key, bool_t required, |
113 | cstring_t desc, struct cloc loc); | |
114 | extern string_t dict_read_string(dict_t *dict, cstring_t key, bool_t required, | |
115 | cstring_t desc, struct cloc loc); | |
116 | extern uint32_t dict_read_number(dict_t *dict, cstring_t key, bool_t required, | |
117 | cstring_t desc, struct cloc loc, | |
118 | uint32_t def); | |
59230b9b | 119 | /* return value can safely be assigned to int32_t */ |
fe5e9cc4 SE |
120 | extern bool_t dict_read_bool(dict_t *dict, cstring_t key, bool_t required, |
121 | cstring_t desc, struct cloc loc, bool_t def); | |
9d3a4132 | 122 | struct flagstr { |
fe5e9cc4 | 123 | cstring_t name; |
9d3a4132 SE |
124 | uint32_t value; |
125 | }; | |
fe5e9cc4 SE |
126 | extern uint32_t string_to_word(cstring_t s, struct cloc loc, |
127 | struct flagstr *f, cstring_t desc); | |
9d3a4132 | 128 | extern uint32_t string_list_to_word(list_t *l, struct flagstr *f, |
fe5e9cc4 | 129 | cstring_t desc); |
2fe58dfd SE |
130 | |
131 | /***** END of configuration support *****/ | |
132 | ||
7138d0c5 SE |
133 | /***** UTILITY functions *****/ |
134 | ||
fe5e9cc4 SE |
135 | extern char *safe_strdup(const char *string, const char *message); |
136 | extern void *safe_malloc(size_t size, const char *message); | |
bb9d0561 | 137 | extern void *safe_malloc_ary(size_t size, size_t count, const char *message); |
2fe58dfd | 138 | |
fe5e9cc4 | 139 | extern int sys_cmd(const char *file, const char *argc, ...); |
4efd681a | 140 | |
698280de IJ |
141 | extern uint64_t now_global; |
142 | extern struct timeval tv_now_global; | |
143 | ||
144 | static const uint64_t *const now = &now_global; | |
145 | static const struct timeval *const tv_now = &tv_now_global; | |
146 | ||
147 | /* "now" is current program time, in milliseconds. It is derived | |
148 | from tv_now. Both are provided by the event loop. */ | |
149 | ||
2fe58dfd SE |
150 | /***** END of utility functions *****/ |
151 | ||
3abd18e8 IJ |
152 | /***** START of max_start_pad handling *****/ |
153 | ||
154 | extern int32_t site_max_start_pad, transform_max_start_pad, | |
155 | comm_max_start_pad; | |
156 | ||
157 | void update_max_start_pad(int32_t *our_module_global, int32_t our_instance); | |
158 | int32_t calculate_max_start_pad(void); | |
159 | ||
160 | /***** END of max_start_pad handling *****/ | |
161 | ||
2fe58dfd SE |
162 | /***** SCHEDULING support */ |
163 | ||
90a39563 IJ |
164 | /* If nfds_io is insufficient for your needs, set it to the required |
165 | number and return ERANGE. timeout is in milliseconds; if it is too | |
166 | high then lower it. It starts at -1 (==infinite) */ | |
2fe58dfd | 167 | typedef int beforepoll_fn(void *st, struct pollfd *fds, int *nfds_io, |
90a39563 IJ |
168 | int *timeout_io); |
169 | typedef void afterpoll_fn(void *st, struct pollfd *fds, int nfds); | |
2fe58dfd SE |
170 | |
171 | /* Register interest in the main loop of the program. Before a call | |
172 | to poll() your supplied beforepoll function will be called. After | |
173 | the call to poll() the supplied afterpoll function will be called. | |
174 | max_nfds is a _hint_ about the maximum number of struct pollfd | |
175 | structures you may require - you can always ask for more in | |
176 | *nfds_io. */ | |
177 | extern void register_for_poll(void *st, beforepoll_fn *before, | |
1caa23ff | 178 | afterpoll_fn *after, int32_t max_nfds, |
fe5e9cc4 | 179 | cstring_t desc); |
2fe58dfd SE |
180 | |
181 | /***** END of scheduling support */ | |
182 | ||
183 | /***** PROGRAM LIFETIME support */ | |
184 | ||
185 | /* The secnet program goes through a number of phases in its lifetime. | |
186 | Module code may arrange to be called just as various phases are | |
7b1a9fb7 RK |
187 | entered. |
188 | ||
189 | Remember to update the table in util.c if changing the set of | |
190 | phases. */ | |
2fe58dfd | 191 | |
42394c37 RK |
192 | enum phase { |
193 | PHASE_INIT, | |
194 | PHASE_GETOPTS, /* Process command-line arguments */ | |
195 | PHASE_READCONFIG, /* Parse and process configuration file */ | |
196 | PHASE_SETUP, /* Process information in configuration */ | |
7b1a9fb7 | 197 | PHASE_DAEMONIZE, /* Become a daemon (if necessary) */ |
42394c37 RK |
198 | PHASE_GETRESOURCES, /* Obtain all external resources */ |
199 | PHASE_DROPPRIV, /* Last chance for privileged operations */ | |
200 | PHASE_RUN, | |
201 | PHASE_SHUTDOWN, /* About to die; delete key material, etc. */ | |
202 | /* Keep this last: */ | |
203 | NR_PHASES, | |
204 | }; | |
2fe58dfd SE |
205 | |
206 | typedef void hook_fn(void *self, uint32_t newphase); | |
207 | bool_t add_hook(uint32_t phase, hook_fn *f, void *state); | |
208 | bool_t remove_hook(uint32_t phase, hook_fn *f, void *state); | |
209 | ||
7138d0c5 SE |
210 | extern uint32_t current_phase; |
211 | extern void enter_phase(uint32_t new_phase); | |
212 | ||
ff05a229 SE |
213 | /* Some features (like netlink 'soft' routes) require that secnet |
214 | retain root privileges. They should indicate that here when | |
215 | appropriate. */ | |
216 | extern bool_t require_root_privileges; | |
fe5e9cc4 | 217 | extern cstring_t require_root_privileges_explanation; |
9d3a4132 | 218 | |
2fe58dfd SE |
219 | /***** END of program lifetime support *****/ |
220 | ||
221 | /***** MODULE support *****/ | |
222 | ||
223 | /* Module initialisation function type - modules export one function of | |
224 | this type which is called to initialise them. For dynamically loaded | |
225 | modules it's called "secnet_module". */ | |
469fd1d9 | 226 | typedef void init_module(dict_t *dict); |
2fe58dfd | 227 | |
08ee90a2 IJ |
228 | extern void init_builtin_modules(dict_t *dict); |
229 | ||
230 | extern init_module resolver_module; | |
231 | extern init_module random_module; | |
232 | extern init_module udp_module; | |
233 | extern init_module util_module; | |
234 | extern init_module site_module; | |
b02b720a | 235 | extern init_module transform_eax_module; |
92a7d254 | 236 | extern init_module transform_cbcmac_module; |
08ee90a2 IJ |
237 | extern init_module netlink_module; |
238 | extern init_module rsa_module; | |
239 | extern init_module dh_module; | |
240 | extern init_module md5_module; | |
241 | extern init_module slip_module; | |
242 | extern init_module tun_module; | |
243 | extern init_module sha1_module; | |
244 | extern init_module log_module; | |
245 | ||
2fe58dfd SE |
246 | /***** END of module support *****/ |
247 | ||
248 | /***** CLOSURE TYPES and interface definitions *****/ | |
249 | ||
469fd1d9 SE |
250 | #define CL_PURE 0 |
251 | #define CL_RESOLVER 1 | |
252 | #define CL_RANDOMSRC 2 | |
253 | #define CL_RSAPUBKEY 3 | |
254 | #define CL_RSAPRIVKEY 4 | |
255 | #define CL_COMM 5 | |
256 | #define CL_IPIF 6 | |
257 | #define CL_LOG 7 | |
258 | #define CL_SITE 8 | |
259 | #define CL_TRANSFORM 9 | |
260 | #define CL_DH 11 | |
261 | #define CL_HASH 12 | |
262 | #define CL_BUFFER 13 | |
263 | #define CL_NETLINK 14 | |
2fe58dfd SE |
264 | |
265 | struct buffer_if; | |
266 | ||
267 | /* PURE closure requires no interface */ | |
268 | ||
269 | /* RESOLVER interface */ | |
270 | ||
271 | /* Answers to queries are delivered to a function of this | |
272 | type. 'address' will be NULL if there was a problem with the query. It | |
273 | will be freed once resolve_answer_fn returns. It is in network byte | |
274 | order. */ | |
ff05a229 | 275 | /* XXX extend to be able to provide multiple answers */ |
2fe58dfd | 276 | typedef void resolve_answer_fn(void *st, struct in_addr *addr); |
fe5e9cc4 | 277 | typedef bool_t resolve_request_fn(void *st, cstring_t name, |
2fe58dfd SE |
278 | resolve_answer_fn *cb, void *cst); |
279 | struct resolver_if { | |
280 | void *st; | |
281 | resolve_request_fn *request; | |
282 | }; | |
283 | ||
284 | /* RANDOMSRC interface */ | |
285 | ||
286 | /* Return some random data. Returns TRUE for success. */ | |
1caa23ff | 287 | typedef bool_t random_fn(void *st, int32_t bytes, uint8_t *buff); |
2fe58dfd SE |
288 | |
289 | struct random_if { | |
290 | void *st; | |
291 | bool_t blocking; | |
292 | random_fn *generate; | |
293 | }; | |
294 | ||
295 | /* RSAPUBKEY interface */ | |
296 | ||
1caa23ff | 297 | typedef bool_t rsa_checksig_fn(void *st, uint8_t *data, int32_t datalen, |
fe5e9cc4 | 298 | cstring_t signature); |
2fe58dfd SE |
299 | struct rsapubkey_if { |
300 | void *st; | |
301 | rsa_checksig_fn *check; | |
302 | }; | |
303 | ||
304 | /* RSAPRIVKEY interface */ | |
305 | ||
1caa23ff | 306 | typedef string_t rsa_makesig_fn(void *st, uint8_t *data, int32_t datalen); |
2fe58dfd SE |
307 | struct rsaprivkey_if { |
308 | void *st; | |
309 | rsa_makesig_fn *sign; | |
310 | }; | |
311 | ||
312 | /* COMM interface */ | |
313 | ||
a15faeb2 IJ |
314 | struct comm_addr { |
315 | /* This struct is pure data; in particular comm's clients may | |
316 | freely copy it. */ | |
317 | /* Everyone is also guaranteed that all padding is set to zero, ie | |
318 | that comm_addrs referring to semantically identical peers will | |
319 | compare equal with memcmp. Anyone who constructs a comm_addr | |
320 | must start by memsetting it with FILLZERO, or some | |
321 | equivalent. */ | |
322 | struct comm_if *comm; | |
323 | struct sockaddr_in sin; | |
324 | }; | |
325 | ||
2fe58dfd SE |
326 | /* Return True if the packet was processed, and shouldn't be passed to |
327 | any other potential receivers. */ | |
328 | typedef bool_t comm_notify_fn(void *state, struct buffer_if *buf, | |
a15faeb2 | 329 | const struct comm_addr *source); |
2fe58dfd SE |
330 | typedef void comm_request_notify_fn(void *commst, void *nst, |
331 | comm_notify_fn *fn); | |
332 | typedef void comm_release_notify_fn(void *commst, void *nst, | |
333 | comm_notify_fn *fn); | |
334 | typedef bool_t comm_sendmsg_fn(void *commst, struct buffer_if *buf, | |
a15faeb2 | 335 | const struct comm_addr *dest); |
5edf478f IJ |
336 | typedef const char *comm_addr_to_string_fn(void *commst, |
337 | const struct comm_addr *ca); | |
338 | /* Returned string is in a static buffer. */ | |
2fe58dfd SE |
339 | struct comm_if { |
340 | void *st; | |
341 | comm_request_notify_fn *request_notify; | |
342 | comm_release_notify_fn *release_notify; | |
343 | comm_sendmsg_fn *sendmsg; | |
5edf478f | 344 | comm_addr_to_string_fn *addr_to_string; |
2fe58dfd SE |
345 | }; |
346 | ||
1a448682 IJ |
347 | static inline const char *comm_addr_to_string(const struct comm_addr *ca) |
348 | { | |
349 | return ca->comm->addr_to_string(ca->comm->st, ca); | |
350 | } | |
351 | ||
2fe58dfd SE |
352 | /* LOG interface */ |
353 | ||
ff1dcd86 IJ |
354 | #define LOG_MESSAGE_BUFLEN 1023 |
355 | ||
fe5e9cc4 SE |
356 | typedef void log_msg_fn(void *st, int class, const char *message, ...); |
357 | typedef void log_vmsg_fn(void *st, int class, const char *message, | |
358 | va_list args); | |
2fe58dfd SE |
359 | struct log_if { |
360 | void *st; | |
779837e1 | 361 | log_vmsg_fn *vlogfn; /* printf format checking. Use [v]slilog instead */ |
ff1dcd86 | 362 | char buff[LOG_MESSAGE_BUFLEN+1]; |
2fe58dfd | 363 | }; |
59938e0e | 364 | /* (convenience functions, defined in util.c) */ |
040ee979 | 365 | extern void slilog(struct log_if *lf, int class, const char *message, ...) |
4f5e39ec | 366 | FORMAT(printf,3,4); |
59938e0e IJ |
367 | extern void vslilog(struct log_if *lf, int class, const char *message, va_list) |
368 | FORMAT(printf,3,0); | |
2fe58dfd | 369 | |
ff1dcd86 IJ |
370 | /* Versions which take (parts of) (multiple) messages, using \n to |
371 | * distinguish one message from another. */ | |
372 | extern void slilog_part(struct log_if *lf, int class, const char *message, ...) | |
373 | FORMAT(printf,3,4); | |
374 | extern void vslilog_part(struct log_if *lf, int class, const char *message, | |
375 | va_list) FORMAT(printf,3,0); | |
376 | ||
2fe58dfd SE |
377 | /* SITE interface */ |
378 | ||
379 | /* Pretty much a placeholder; allows starting and stopping of processing, | |
380 | key expiry, etc. */ | |
381 | typedef void site_control_fn(void *st, bool_t run); | |
382 | typedef uint32_t site_status_fn(void *st); | |
383 | struct site_if { | |
384 | void *st; | |
385 | site_control_fn *control; | |
386 | site_status_fn *status; | |
387 | }; | |
388 | ||
389 | /* TRANSFORM interface */ | |
390 | ||
391 | /* A reversable transformation. Transforms buffer in-place; may add | |
3abd18e8 | 392 | data to start or end. (Reverse transformations decrease |
2fe58dfd SE |
393 | length, of course.) Transformations may be key-dependent, in which |
394 | case key material is passed in at initialisation time. They may | |
395 | also depend on internal factors (eg. time) and keep internal | |
396 | state. A struct transform_if only represents a particular type of | |
397 | transformation; instances of the transformation (eg. with | |
0118121a IJ |
398 | particular key material) have a different C type. The same |
399 | secret key will be used in opposite directions between a pair of | |
400 | secnets; one of these pairs will get direction==False, the other True. */ | |
2fe58dfd SE |
401 | |
402 | typedef struct transform_inst_if *transform_createinstance_fn(void *st); | |
0118121a IJ |
403 | typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen, |
404 | bool_t direction); | |
b67dab18 | 405 | typedef bool_t transform_valid_fn(void *st); /* 0: no key; 1: ok */ |
2fe58dfd SE |
406 | typedef void transform_delkey_fn(void *st); |
407 | typedef void transform_destroyinstance_fn(void *st); | |
07e4774c IJ |
408 | /* Returns: |
409 | * 0: all is well | |
410 | * 1: for any other problem | |
411 | * 2: message decrypted but sequence number was out of range | |
412 | */ | |
2fe58dfd | 413 | typedef uint32_t transform_apply_fn(void *st, struct buffer_if *buf, |
fe5e9cc4 | 414 | const char **errmsg); |
2fe58dfd SE |
415 | |
416 | struct transform_inst_if { | |
417 | void *st; | |
418 | transform_setkey_fn *setkey; | |
b67dab18 | 419 | transform_valid_fn *valid; |
2fe58dfd SE |
420 | transform_delkey_fn *delkey; |
421 | transform_apply_fn *forwards; | |
422 | transform_apply_fn *reverse; | |
423 | transform_destroyinstance_fn *destroy; | |
424 | }; | |
425 | ||
426 | struct transform_if { | |
427 | void *st; | |
5b5f297f | 428 | int capab_transformnum; |
3abd18e8 | 429 | int32_t keylen; /* <<< INT_MAX */ |
2fe58dfd SE |
430 | transform_createinstance_fn *create; |
431 | }; | |
432 | ||
433 | /* NETLINK interface */ | |
434 | ||
70dc107b SE |
435 | /* Used by netlink to deliver to site, and by site to deliver to |
436 | netlink. cid is the client identifier returned by | |
437 | netlink_regnets_fn. If buf has size 0 then the function is just | |
438 | being called for its site-effects (eg. making the site code attempt | |
439 | to bring up a network link) */ | |
469fd1d9 | 440 | typedef void netlink_deliver_fn(void *st, struct buffer_if *buf); |
4efd681a | 441 | /* site code can tell netlink when outgoing packets will be dropped, |
70dc107b | 442 | so netlink can generate appropriate ICMP and make routing decisions */ |
f208b9a9 IJ |
443 | #define LINK_QUALITY_UNUSED 0 /* This link is unused, do not make this netlink */ |
444 | #define LINK_QUALITY_DOWN 1 /* No chance of a packet being delivered right away*/ | |
445 | #define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */ | |
446 | #define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */ | |
447 | #define LINK_QUALITY_UP 4 /* Link active */ | |
70dc107b | 448 | #define MAXIMUM_LINK_QUALITY 3 |
469fd1d9 SE |
449 | typedef void netlink_link_quality_fn(void *st, uint32_t quality); |
450 | typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver, | |
1c085348 | 451 | void *dst, uint32_t *localmtu_r /* NULL ok */); |
794f2398 SE |
452 | typedef void netlink_output_config_fn(void *st, struct buffer_if *buf); |
453 | typedef bool_t netlink_check_config_fn(void *st, struct buffer_if *buf); | |
1caa23ff | 454 | typedef void netlink_set_mtu_fn(void *st, int32_t new_mtu); |
2fe58dfd SE |
455 | struct netlink_if { |
456 | void *st; | |
469fd1d9 | 457 | netlink_register_fn *reg; |
2fe58dfd | 458 | netlink_deliver_fn *deliver; |
70dc107b | 459 | netlink_link_quality_fn *set_quality; |
d3fe100d | 460 | netlink_set_mtu_fn *set_mtu; |
2fe58dfd SE |
461 | }; |
462 | ||
463 | /* DH interface */ | |
464 | ||
465 | /* Returns public key as a malloced hex string */ | |
466 | typedef string_t dh_makepublic_fn(void *st, uint8_t *secret, | |
1caa23ff | 467 | int32_t secretlen); |
2fe58dfd SE |
468 | /* Fills buffer (up to buflen) with shared secret */ |
469 | typedef void dh_makeshared_fn(void *st, uint8_t *secret, | |
1caa23ff IJ |
470 | int32_t secretlen, cstring_t rempublic, |
471 | uint8_t *sharedsecret, int32_t buflen); | |
2fe58dfd SE |
472 | struct dh_if { |
473 | void *st; | |
1caa23ff | 474 | int32_t len; /* Approximate size of modulus in bytes */ |
7c9ca4bd | 475 | int32_t ceil_len; /* Number of bytes just sufficient to contain modulus */ |
2fe58dfd SE |
476 | dh_makepublic_fn *makepublic; |
477 | dh_makeshared_fn *makeshared; | |
478 | }; | |
479 | ||
480 | /* HASH interface */ | |
481 | ||
482 | typedef void *hash_init_fn(void); | |
babd74ec | 483 | typedef void hash_update_fn(void *st, const void *buf, int32_t len); |
2fe58dfd SE |
484 | typedef void hash_final_fn(void *st, uint8_t *digest); |
485 | struct hash_if { | |
1caa23ff | 486 | int32_t len; /* Hash output length in bytes */ |
2fe58dfd SE |
487 | hash_init_fn *init; |
488 | hash_update_fn *update; | |
489 | hash_final_fn *final; | |
490 | }; | |
491 | ||
492 | /* BUFFER interface */ | |
493 | ||
494 | struct buffer_if { | |
495 | bool_t free; | |
fe5e9cc4 | 496 | cstring_t owner; /* Set to constant string */ |
2fe58dfd SE |
497 | uint32_t flags; /* How paranoid should we be? */ |
498 | struct cloc loc; /* Where we were defined */ | |
499 | uint8_t *base; | |
500 | uint8_t *start; | |
1caa23ff | 501 | int32_t size; /* Size of buffer contents */ |
10068344 | 502 | int32_t alloclen; /* Total length allocated at base */ |
2fe58dfd SE |
503 | }; |
504 | ||
4f5e39ec SE |
505 | /***** LOG functions *****/ |
506 | ||
507 | #define M_DEBUG_CONFIG 0x001 | |
508 | #define M_DEBUG_PHASE 0x002 | |
509 | #define M_DEBUG 0x004 | |
510 | #define M_INFO 0x008 | |
511 | #define M_NOTICE 0x010 | |
512 | #define M_WARNING 0x020 | |
513 | #define M_ERR 0x040 | |
514 | #define M_SECURITY 0x080 | |
515 | #define M_FATAL 0x100 | |
516 | ||
517 | /* The fatal() family of functions require messages that do not end in '\n' */ | |
779837e1 IJ |
518 | extern NORETURN(fatal(const char *message, ...)) FORMAT(printf,1,2); |
519 | extern NORETURN(fatal_perror(const char *message, ...)) FORMAT(printf,1,2); | |
520 | extern NORETURN(fatal_status(int status, const char *message, ...)) | |
521 | FORMAT(printf,2,3); | |
522 | extern NORETURN(fatal_perror_status(int status, const char *message, ...)) | |
523 | FORMAT(printf,2,3); | |
4f5e39ec SE |
524 | |
525 | /* The cfgfatal() family of functions require messages that end in '\n' */ | |
fe5e9cc4 | 526 | extern NORETURN(cfgfatal(struct cloc loc, cstring_t facility, |
779837e1 | 527 | const char *message, ...)) FORMAT(printf,3,4); |
4f5e39ec SE |
528 | extern void cfgfile_postreadcheck(struct cloc loc, FILE *f); |
529 | extern NORETURN(vcfgfatal_maybefile(FILE *maybe_f, struct cloc loc, | |
fe5e9cc4 | 530 | cstring_t facility, const char *message, |
779837e1 IJ |
531 | va_list)) |
532 | FORMAT(printf,4,0); | |
4f5e39ec | 533 | extern NORETURN(cfgfatal_maybefile(FILE *maybe_f, struct cloc loc, |
fe5e9cc4 | 534 | cstring_t facility, |
779837e1 IJ |
535 | const char *message, ...)) |
536 | FORMAT(printf,4,5); | |
4f5e39ec | 537 | |
fe5e9cc4 SE |
538 | extern void Message(uint32_t class, const char *message, ...) |
539 | FORMAT(printf,2,3); | |
540 | extern void log_from_fd(int fd, cstring_t prefix, struct log_if *log); | |
4f5e39ec SE |
541 | |
542 | /***** END of log functions *****/ | |
543 | ||
45cfab8c IJ |
544 | #define STRING2(x) #x |
545 | #define STRING(x) STRING2(x) | |
546 | ||
076bb54e IJ |
547 | #define FILLZERO(obj) (memset(&(obj),0,sizeof((obj)))) |
548 | ||
2fe58dfd | 549 | #endif /* secnet_h */ |