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