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> |
2fe58dfd | 10 | #include <sys/poll.h> |
8689b3a9 SE |
11 | #include <sys/types.h> |
12 | #include <sys/time.h> | |
2fe58dfd | 13 | #include <netinet/in.h> |
2fe58dfd | 14 | |
3b83c932 SE |
15 | /* |
16 | * Macros added by SGT for endianness-independence | |
17 | */ | |
18 | #define GET_32BIT_MSB_FIRST(cp) \ | |
19 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ | |
20 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ | |
21 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ | |
22 | ((unsigned long)(unsigned char)(cp)[3])) | |
23 | ||
24 | #define PUT_32BIT_MSB_FIRST(cp, value) ( \ | |
25 | (cp)[0] = (char)((value) >> 24), \ | |
26 | (cp)[1] = (char)((value) >> 16), \ | |
27 | (cp)[2] = (char)((value) >> 8), \ | |
28 | (cp)[3] = (char)(value) ) | |
29 | ||
2fe58dfd | 30 | typedef char *string_t; |
fe5e9cc4 | 31 | typedef const char *cstring_t; |
2fe58dfd SE |
32 | typedef enum {False,True} bool_t; |
33 | ||
794f2398 | 34 | #define ASSERT(x) do { if (!(x)) { fatal("assertion failed line %d file " \ |
4f5e39ec | 35 | __FILE__,__LINE__); } } while(0) |
2fe58dfd | 36 | |
fcbc5905 IJ |
37 | /* from version.c */ |
38 | ||
39 | extern char version[]; | |
40 | ||
08ee90a2 IJ |
41 | /* from logmsg.c */ |
42 | extern uint32_t message_level; | |
43 | extern bool_t secnet_is_daemon; | |
44 | extern struct log_if *system_log; | |
45 | ||
46 | /* from process.c */ | |
47 | extern void start_signal_handling(void); | |
48 | ||
2fe58dfd SE |
49 | /***** CONFIGURATION support *****/ |
50 | ||
baa06aeb SE |
51 | extern bool_t just_check_config; /* If True then we're going to exit after |
52 | reading the configuration file */ | |
b2a56f7c | 53 | extern bool_t background; /* If True then we'll eventually run as a daemon */ |
baa06aeb | 54 | |
2fe58dfd SE |
55 | typedef struct dict dict_t; /* Configuration dictionary */ |
56 | typedef struct closure closure_t; | |
57 | typedef struct item item_t; | |
58 | typedef struct list list_t; /* A list of items */ | |
59 | ||
60 | /* Configuration file location, for error-reporting */ | |
61 | struct cloc { | |
fe5e9cc4 | 62 | cstring_t file; |
1caa23ff | 63 | int line; |
2fe58dfd SE |
64 | }; |
65 | ||
66 | /* Modules export closures, which can be invoked from the configuration file. | |
67 | "Invoking" a closure usually returns another closure (of a different | |
68 | type), but can actually return any configuration object. */ | |
69 | typedef list_t *(apply_fn)(closure_t *self, struct cloc loc, | |
70 | dict_t *context, list_t *data); | |
71 | struct closure { | |
fe5e9cc4 | 72 | cstring_t description; /* For debugging */ |
2fe58dfd SE |
73 | uint32_t type; /* Central registry... */ |
74 | apply_fn *apply; | |
75 | void *interface; /* Interface for use inside secnet; depends on type */ | |
76 | }; | |
77 | ||
78 | enum types { t_null, t_bool, t_string, t_number, t_dict, t_closure }; | |
79 | struct item { | |
80 | enum types type; | |
81 | union { | |
82 | bool_t bool; | |
83 | string_t string; | |
84 | uint32_t number; | |
85 | dict_t *dict; | |
86 | closure_t *closure; | |
87 | } data; | |
88 | struct cloc loc; | |
89 | }; | |
90 | ||
ff05a229 SE |
91 | /* Note that it is unwise to use this structure directly; use the list |
92 | manipulation functions instead. */ | |
2fe58dfd SE |
93 | struct list { |
94 | item_t *item; | |
95 | struct list *next; | |
96 | }; | |
97 | ||
98 | /* In the following two lookup functions, NULL means 'not found' */ | |
99 | /* Lookup a value in the specified dictionary, or its parents */ | |
fe5e9cc4 | 100 | extern list_t *dict_lookup(dict_t *dict, cstring_t key); |
2fe58dfd | 101 | /* Lookup a value in just the specified dictionary */ |
fe5e9cc4 | 102 | extern list_t *dict_lookup_primitive(dict_t *dict, cstring_t key); |
2fe58dfd | 103 | /* Add a value to the specified dictionary */ |
fe5e9cc4 | 104 | extern void dict_add(dict_t *dict, cstring_t key, list_t *val); |
2fe58dfd | 105 | /* Obtain an array of keys in the dictionary. malloced; caller frees */ |
fe5e9cc4 | 106 | extern cstring_t *dict_keys(dict_t *dict); |
2fe58dfd SE |
107 | |
108 | /* List-manipulation functions */ | |
109 | extern list_t *list_new(void); | |
1caa23ff | 110 | extern int32_t list_length(list_t *a); |
2fe58dfd SE |
111 | extern list_t *list_append(list_t *a, item_t *i); |
112 | extern list_t *list_append_list(list_t *a, list_t *b); | |
113 | /* Returns an item from the list (index starts at 0), or NULL */ | |
1caa23ff | 114 | extern item_t *list_elem(list_t *l, int32_t index); |
2fe58dfd SE |
115 | |
116 | /* Convenience functions */ | |
117 | extern list_t *new_closure(closure_t *cl); | |
fe5e9cc4 SE |
118 | extern void add_closure(dict_t *dict, cstring_t name, apply_fn apply); |
119 | extern void *find_cl_if(dict_t *dict, cstring_t name, uint32_t type, | |
120 | bool_t fail_if_invalid, cstring_t desc, | |
2fe58dfd | 121 | struct cloc loc); |
fe5e9cc4 SE |
122 | extern item_t *dict_find_item(dict_t *dict, cstring_t key, bool_t required, |
123 | cstring_t desc, struct cloc loc); | |
124 | extern string_t dict_read_string(dict_t *dict, cstring_t key, bool_t required, | |
125 | cstring_t desc, struct cloc loc); | |
126 | extern uint32_t dict_read_number(dict_t *dict, cstring_t key, bool_t required, | |
127 | cstring_t desc, struct cloc loc, | |
128 | uint32_t def); | |
59230b9b | 129 | /* return value can safely be assigned to int32_t */ |
fe5e9cc4 SE |
130 | extern bool_t dict_read_bool(dict_t *dict, cstring_t key, bool_t required, |
131 | cstring_t desc, struct cloc loc, bool_t def); | |
9d3a4132 | 132 | struct flagstr { |
fe5e9cc4 | 133 | cstring_t name; |
9d3a4132 SE |
134 | uint32_t value; |
135 | }; | |
fe5e9cc4 SE |
136 | extern uint32_t string_to_word(cstring_t s, struct cloc loc, |
137 | struct flagstr *f, cstring_t desc); | |
9d3a4132 | 138 | extern uint32_t string_list_to_word(list_t *l, struct flagstr *f, |
fe5e9cc4 | 139 | cstring_t desc); |
2fe58dfd SE |
140 | |
141 | /***** END of configuration support *****/ | |
142 | ||
7138d0c5 SE |
143 | /***** UTILITY functions *****/ |
144 | ||
fe5e9cc4 SE |
145 | extern char *safe_strdup(const char *string, const char *message); |
146 | extern void *safe_malloc(size_t size, const char *message); | |
bb9d0561 | 147 | extern void *safe_malloc_ary(size_t size, size_t count, const char *message); |
2fe58dfd | 148 | |
fe5e9cc4 | 149 | extern int sys_cmd(const char *file, const char *argc, ...); |
4efd681a | 150 | |
698280de IJ |
151 | extern uint64_t now_global; |
152 | extern struct timeval tv_now_global; | |
153 | ||
154 | static const uint64_t *const now = &now_global; | |
155 | static const struct timeval *const tv_now = &tv_now_global; | |
156 | ||
157 | /* "now" is current program time, in milliseconds. It is derived | |
158 | from tv_now. Both are provided by the event loop. */ | |
159 | ||
2fe58dfd SE |
160 | /***** END of utility functions *****/ |
161 | ||
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; | |
235 | extern init_module transform_module; | |
236 | extern init_module netlink_module; | |
237 | extern init_module rsa_module; | |
238 | extern init_module dh_module; | |
239 | extern init_module md5_module; | |
240 | extern init_module slip_module; | |
241 | extern init_module tun_module; | |
242 | extern init_module sha1_module; | |
243 | extern init_module log_module; | |
244 | ||
2fe58dfd SE |
245 | /***** END of module support *****/ |
246 | ||
247 | /***** CLOSURE TYPES and interface definitions *****/ | |
248 | ||
469fd1d9 SE |
249 | #define CL_PURE 0 |
250 | #define CL_RESOLVER 1 | |
251 | #define CL_RANDOMSRC 2 | |
252 | #define CL_RSAPUBKEY 3 | |
253 | #define CL_RSAPRIVKEY 4 | |
254 | #define CL_COMM 5 | |
255 | #define CL_IPIF 6 | |
256 | #define CL_LOG 7 | |
257 | #define CL_SITE 8 | |
258 | #define CL_TRANSFORM 9 | |
259 | #define CL_DH 11 | |
260 | #define CL_HASH 12 | |
261 | #define CL_BUFFER 13 | |
262 | #define CL_NETLINK 14 | |
2fe58dfd SE |
263 | |
264 | struct buffer_if; | |
265 | ||
266 | /* PURE closure requires no interface */ | |
267 | ||
268 | /* RESOLVER interface */ | |
269 | ||
270 | /* Answers to queries are delivered to a function of this | |
271 | type. 'address' will be NULL if there was a problem with the query. It | |
272 | will be freed once resolve_answer_fn returns. It is in network byte | |
273 | order. */ | |
ff05a229 | 274 | /* XXX extend to be able to provide multiple answers */ |
2fe58dfd | 275 | typedef void resolve_answer_fn(void *st, struct in_addr *addr); |
fe5e9cc4 | 276 | typedef bool_t resolve_request_fn(void *st, cstring_t name, |
2fe58dfd SE |
277 | resolve_answer_fn *cb, void *cst); |
278 | struct resolver_if { | |
279 | void *st; | |
280 | resolve_request_fn *request; | |
281 | }; | |
282 | ||
283 | /* RANDOMSRC interface */ | |
284 | ||
285 | /* Return some random data. Returns TRUE for success. */ | |
1caa23ff | 286 | typedef bool_t random_fn(void *st, int32_t bytes, uint8_t *buff); |
2fe58dfd SE |
287 | |
288 | struct random_if { | |
289 | void *st; | |
290 | bool_t blocking; | |
291 | random_fn *generate; | |
292 | }; | |
293 | ||
294 | /* RSAPUBKEY interface */ | |
295 | ||
1caa23ff | 296 | typedef bool_t rsa_checksig_fn(void *st, uint8_t *data, int32_t datalen, |
fe5e9cc4 | 297 | cstring_t signature); |
2fe58dfd SE |
298 | struct rsapubkey_if { |
299 | void *st; | |
300 | rsa_checksig_fn *check; | |
301 | }; | |
302 | ||
303 | /* RSAPRIVKEY interface */ | |
304 | ||
1caa23ff | 305 | typedef string_t rsa_makesig_fn(void *st, uint8_t *data, int32_t datalen); |
2fe58dfd SE |
306 | struct rsaprivkey_if { |
307 | void *st; | |
308 | rsa_makesig_fn *sign; | |
309 | }; | |
310 | ||
311 | /* COMM interface */ | |
312 | ||
a15faeb2 IJ |
313 | struct comm_addr { |
314 | /* This struct is pure data; in particular comm's clients may | |
315 | freely copy it. */ | |
316 | /* Everyone is also guaranteed that all padding is set to zero, ie | |
317 | that comm_addrs referring to semantically identical peers will | |
318 | compare equal with memcmp. Anyone who constructs a comm_addr | |
319 | must start by memsetting it with FILLZERO, or some | |
320 | equivalent. */ | |
321 | struct comm_if *comm; | |
322 | struct sockaddr_in sin; | |
323 | }; | |
324 | ||
2fe58dfd SE |
325 | /* Return True if the packet was processed, and shouldn't be passed to |
326 | any other potential receivers. */ | |
327 | typedef bool_t comm_notify_fn(void *state, struct buffer_if *buf, | |
a15faeb2 | 328 | const struct comm_addr *source); |
2fe58dfd SE |
329 | typedef void comm_request_notify_fn(void *commst, void *nst, |
330 | comm_notify_fn *fn); | |
331 | typedef void comm_release_notify_fn(void *commst, void *nst, | |
332 | comm_notify_fn *fn); | |
333 | typedef bool_t comm_sendmsg_fn(void *commst, struct buffer_if *buf, | |
a15faeb2 | 334 | const struct comm_addr *dest); |
5edf478f IJ |
335 | typedef const char *comm_addr_to_string_fn(void *commst, |
336 | const struct comm_addr *ca); | |
337 | /* Returned string is in a static buffer. */ | |
2fe58dfd SE |
338 | struct comm_if { |
339 | void *st; | |
1caa23ff IJ |
340 | int32_t min_start_pad; |
341 | int32_t min_end_pad; | |
2fe58dfd SE |
342 | comm_request_notify_fn *request_notify; |
343 | comm_release_notify_fn *release_notify; | |
344 | comm_sendmsg_fn *sendmsg; | |
5edf478f | 345 | comm_addr_to_string_fn *addr_to_string; |
2fe58dfd SE |
346 | }; |
347 | ||
348 | /* LOG interface */ | |
349 | ||
fe5e9cc4 SE |
350 | typedef void log_msg_fn(void *st, int class, const char *message, ...); |
351 | typedef void log_vmsg_fn(void *st, int class, const char *message, | |
352 | va_list args); | |
2fe58dfd SE |
353 | struct log_if { |
354 | void *st; | |
355 | log_msg_fn *log; | |
356 | log_vmsg_fn *vlog; | |
357 | }; | |
59938e0e | 358 | /* (convenience functions, defined in util.c) */ |
040ee979 | 359 | extern void slilog(struct log_if *lf, int class, const char *message, ...) |
4f5e39ec | 360 | FORMAT(printf,3,4); |
59938e0e IJ |
361 | extern void vslilog(struct log_if *lf, int class, const char *message, va_list) |
362 | FORMAT(printf,3,0); | |
2fe58dfd SE |
363 | |
364 | /* SITE interface */ | |
365 | ||
366 | /* Pretty much a placeholder; allows starting and stopping of processing, | |
367 | key expiry, etc. */ | |
368 | typedef void site_control_fn(void *st, bool_t run); | |
369 | typedef uint32_t site_status_fn(void *st); | |
370 | struct site_if { | |
371 | void *st; | |
372 | site_control_fn *control; | |
373 | site_status_fn *status; | |
374 | }; | |
375 | ||
376 | /* TRANSFORM interface */ | |
377 | ||
378 | /* A reversable transformation. Transforms buffer in-place; may add | |
379 | data to start or end. Maximum amount of data to be added specified | |
380 | in max_start_pad and max_end_pad. (Reverse transformations decrease | |
381 | length, of course.) Transformations may be key-dependent, in which | |
382 | case key material is passed in at initialisation time. They may | |
383 | also depend on internal factors (eg. time) and keep internal | |
384 | state. A struct transform_if only represents a particular type of | |
385 | transformation; instances of the transformation (eg. with | |
386 | particular key material) have a different C type. */ | |
387 | ||
388 | typedef struct transform_inst_if *transform_createinstance_fn(void *st); | |
1caa23ff | 389 | typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen); |
2fe58dfd SE |
390 | typedef void transform_delkey_fn(void *st); |
391 | typedef void transform_destroyinstance_fn(void *st); | |
07e4774c IJ |
392 | /* Returns: |
393 | * 0: all is well | |
394 | * 1: for any other problem | |
395 | * 2: message decrypted but sequence number was out of range | |
396 | */ | |
2fe58dfd | 397 | typedef uint32_t transform_apply_fn(void *st, struct buffer_if *buf, |
fe5e9cc4 | 398 | const char **errmsg); |
2fe58dfd SE |
399 | |
400 | struct transform_inst_if { | |
401 | void *st; | |
402 | transform_setkey_fn *setkey; | |
403 | transform_delkey_fn *delkey; | |
404 | transform_apply_fn *forwards; | |
405 | transform_apply_fn *reverse; | |
406 | transform_destroyinstance_fn *destroy; | |
407 | }; | |
408 | ||
409 | struct transform_if { | |
410 | void *st; | |
1caa23ff IJ |
411 | int32_t max_start_pad; /* these three are all <<< INT_MAX */ |
412 | int32_t max_end_pad; | |
413 | int32_t keylen; | |
2fe58dfd SE |
414 | transform_createinstance_fn *create; |
415 | }; | |
416 | ||
417 | /* NETLINK interface */ | |
418 | ||
70dc107b SE |
419 | /* Used by netlink to deliver to site, and by site to deliver to |
420 | netlink. cid is the client identifier returned by | |
421 | netlink_regnets_fn. If buf has size 0 then the function is just | |
422 | being called for its site-effects (eg. making the site code attempt | |
423 | to bring up a network link) */ | |
469fd1d9 | 424 | typedef void netlink_deliver_fn(void *st, struct buffer_if *buf); |
4efd681a | 425 | /* site code can tell netlink when outgoing packets will be dropped, |
70dc107b | 426 | so netlink can generate appropriate ICMP and make routing decisions */ |
f208b9a9 IJ |
427 | #define LINK_QUALITY_UNUSED 0 /* This link is unused, do not make this netlink */ |
428 | #define LINK_QUALITY_DOWN 1 /* No chance of a packet being delivered right away*/ | |
429 | #define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */ | |
430 | #define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */ | |
431 | #define LINK_QUALITY_UP 4 /* Link active */ | |
70dc107b | 432 | #define MAXIMUM_LINK_QUALITY 3 |
469fd1d9 SE |
433 | typedef void netlink_link_quality_fn(void *st, uint32_t quality); |
434 | typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver, | |
1caa23ff IJ |
435 | void *dst, int32_t max_start_pad, |
436 | int32_t max_end_pad); | |
794f2398 SE |
437 | typedef void netlink_output_config_fn(void *st, struct buffer_if *buf); |
438 | typedef bool_t netlink_check_config_fn(void *st, struct buffer_if *buf); | |
1caa23ff | 439 | typedef void netlink_set_mtu_fn(void *st, int32_t new_mtu); |
2fe58dfd SE |
440 | struct netlink_if { |
441 | void *st; | |
469fd1d9 | 442 | netlink_register_fn *reg; |
2fe58dfd | 443 | netlink_deliver_fn *deliver; |
70dc107b | 444 | netlink_link_quality_fn *set_quality; |
d3fe100d | 445 | netlink_set_mtu_fn *set_mtu; |
2fe58dfd SE |
446 | }; |
447 | ||
448 | /* DH interface */ | |
449 | ||
450 | /* Returns public key as a malloced hex string */ | |
451 | typedef string_t dh_makepublic_fn(void *st, uint8_t *secret, | |
1caa23ff | 452 | int32_t secretlen); |
2fe58dfd SE |
453 | /* Fills buffer (up to buflen) with shared secret */ |
454 | typedef void dh_makeshared_fn(void *st, uint8_t *secret, | |
1caa23ff IJ |
455 | int32_t secretlen, cstring_t rempublic, |
456 | uint8_t *sharedsecret, int32_t buflen); | |
2fe58dfd SE |
457 | struct dh_if { |
458 | void *st; | |
1caa23ff | 459 | int32_t len; /* Approximate size of modulus in bytes */ |
2fe58dfd SE |
460 | dh_makepublic_fn *makepublic; |
461 | dh_makeshared_fn *makeshared; | |
462 | }; | |
463 | ||
464 | /* HASH interface */ | |
465 | ||
466 | typedef void *hash_init_fn(void); | |
babd74ec | 467 | typedef void hash_update_fn(void *st, const void *buf, int32_t len); |
2fe58dfd SE |
468 | typedef void hash_final_fn(void *st, uint8_t *digest); |
469 | struct hash_if { | |
1caa23ff | 470 | int32_t len; /* Hash output length in bytes */ |
2fe58dfd SE |
471 | hash_init_fn *init; |
472 | hash_update_fn *update; | |
473 | hash_final_fn *final; | |
474 | }; | |
475 | ||
476 | /* BUFFER interface */ | |
477 | ||
478 | struct buffer_if { | |
479 | bool_t free; | |
fe5e9cc4 | 480 | cstring_t owner; /* Set to constant string */ |
2fe58dfd SE |
481 | uint32_t flags; /* How paranoid should we be? */ |
482 | struct cloc loc; /* Where we were defined */ | |
483 | uint8_t *base; | |
484 | uint8_t *start; | |
1caa23ff IJ |
485 | int32_t size; /* Size of buffer contents */ |
486 | int32_t len; /* Total length allocated at base */ | |
2fe58dfd SE |
487 | }; |
488 | ||
4f5e39ec SE |
489 | /***** LOG functions *****/ |
490 | ||
491 | #define M_DEBUG_CONFIG 0x001 | |
492 | #define M_DEBUG_PHASE 0x002 | |
493 | #define M_DEBUG 0x004 | |
494 | #define M_INFO 0x008 | |
495 | #define M_NOTICE 0x010 | |
496 | #define M_WARNING 0x020 | |
497 | #define M_ERR 0x040 | |
498 | #define M_SECURITY 0x080 | |
499 | #define M_FATAL 0x100 | |
500 | ||
501 | /* The fatal() family of functions require messages that do not end in '\n' */ | |
fe5e9cc4 SE |
502 | extern NORETURN(fatal(const char *message, ...)); |
503 | extern NORETURN(fatal_perror(const char *message, ...)); | |
504 | extern NORETURN(fatal_status(int status, const char *message, ...)); | |
505 | extern NORETURN(fatal_perror_status(int status, const char *message, ...)); | |
4f5e39ec SE |
506 | |
507 | /* The cfgfatal() family of functions require messages that end in '\n' */ | |
fe5e9cc4 SE |
508 | extern NORETURN(cfgfatal(struct cloc loc, cstring_t facility, |
509 | const char *message, ...)); | |
4f5e39ec SE |
510 | extern void cfgfile_postreadcheck(struct cloc loc, FILE *f); |
511 | extern NORETURN(vcfgfatal_maybefile(FILE *maybe_f, struct cloc loc, | |
fe5e9cc4 | 512 | cstring_t facility, const char *message, |
4f5e39ec SE |
513 | va_list)); |
514 | extern NORETURN(cfgfatal_maybefile(FILE *maybe_f, struct cloc loc, | |
fe5e9cc4 SE |
515 | cstring_t facility, |
516 | const char *message, ...)); | |
4f5e39ec | 517 | |
fe5e9cc4 SE |
518 | extern void Message(uint32_t class, const char *message, ...) |
519 | FORMAT(printf,2,3); | |
520 | extern void log_from_fd(int fd, cstring_t prefix, struct log_if *log); | |
4f5e39ec SE |
521 | |
522 | /***** END of log functions *****/ | |
523 | ||
45cfab8c IJ |
524 | #define STRING2(x) #x |
525 | #define STRING(x) STRING2(x) | |
526 | ||
076bb54e IJ |
527 | #define FILLZERO(obj) (memset(&(obj),0,sizeof((obj)))) |
528 | ||
2fe58dfd | 529 | #endif /* secnet_h */ |