1 /* Core interface of secnet, to be used by all modules */
3 * This file is part of secnet.
4 * See README for full list of copyright holders.
6 * secnet is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * secnet is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * version 3 along with secnet; if not, see
18 * https://www.gnu.org/licenses/gpl.html.
24 #define ADNS_FEATURE_MANYAF
40 #include <sys/types.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
46 #include <bsd/sys/queue.h>
48 #define MAX_PEER_ADDRS 5
49 /* send at most this many copies; honour at most that many addresses */
51 #define MAX_NAK_MSG 80
52 #define MAX_SIG_KEYS 4
59 typedef char *string_t;
60 typedef const char *cstring_t;
62 #define False (_Bool)0
68 struct sockaddr_in sin;
70 struct sockaddr_in6 sin6;
76 #define KEYIDSZ (GRPIDSZ+ALGIDSZ)
77 /* Changing these is complex: this is the group id plus algo id */
78 /* They are costructed by pubkeys.fl.pl. Also hardcoded in _PR_ */
79 struct sigkeyid { uint8_t b[KEYIDSZ]; };
81 #define SIGKEYID_PR_FMT "%02x%02x%02x%02x%02x"
82 #define SIGKEYID_PR_VAL(id) /* SIGKEYID_PR_VAL(const sigkeyid *id) */ \
83 ((id) == (const struct sigkeyid*)0, (id)->b[0]), \
84 (id)->b[1],(id)->b[2],(id)->b[3],(id)->b[4]
85 static inline bool_t sigkeyid_equal(const struct sigkeyid *a,
86 const struct sigkeyid *b) {
87 return !memcmp(a->b, b->b, KEYIDSZ);
91 typedef uint32_t serialt;
92 static inline int serial_cmp(serialt a, serialt b) {
96 return b-a <= (serialt)0x7fffffffUL ? +1 : -1;
99 #define ASSERT(x) do { if (!(x)) { fatal("assertion failed line %d file " \
100 __FILE__,__LINE__); } } while(0)
104 extern char version[];
107 extern uint32_t message_level;
108 extern bool_t secnet_is_daemon;
109 extern struct log_if *system_log;
112 extern void start_signal_handling(void);
114 void afterfork(void);
115 /* Must be called before exec in every child made after
116 start_signal_handling. Safe to call in earlier children too. */
118 void childpersist_closefd_hook(void *fd_p, uint32_t newphase);
119 /* Convenience hook function for use with add_hook PHASE_CHILDPERSIST.
120 With `int fd' in your state struct, pass fd_p=&fd. The hook checks
121 whether fd>=0, so you can use it for an fd which is only sometimes
122 open. This function will set fd to -1, so it is idempotent. */
124 /***** CONFIGURATION support *****/
126 extern bool_t just_check_config; /* If True then we're going to exit after
127 reading the configuration file */
128 extern bool_t background; /* If True then we'll eventually run as a daemon */
130 typedef struct dict dict_t; /* Configuration dictionary */
131 typedef struct closure closure_t;
132 typedef struct item item_t;
133 typedef struct list list_t; /* A list of items */
135 /* Configuration file location, for error-reporting */
141 /* Modules export closures, which can be invoked from the configuration file.
142 "Invoking" a closure usually returns another closure (of a different
143 type), but can actually return any configuration object. */
144 typedef list_t *(apply_fn)(closure_t *self, struct cloc loc,
145 dict_t *context, list_t *data);
147 cstring_t description; /* For debugging */
148 uint32_t type; /* Central registry... */
150 void *interface; /* Interface for use inside secnet; depends on type */
153 enum types { t_null, t_bool, t_string, t_number, t_dict, t_closure };
166 /* Note that it is unwise to use this structure directly; use the list
167 manipulation functions instead. */
173 /* In the following two lookup functions, NULL means 'not found' */
174 /* Lookup a value in the specified dictionary, or its parents */
175 extern list_t *dict_lookup(dict_t *dict, cstring_t key);
176 /* Lookup a value in just the specified dictionary */
177 extern list_t *dict_lookup_primitive(dict_t *dict, cstring_t key);
178 /* Add a value to the specified dictionary */
179 extern void dict_add(dict_t *dict, cstring_t key, list_t *val);
180 /* Obtain an array of keys in the dictionary. malloced; caller frees */
181 extern cstring_t *dict_keys(dict_t *dict);
183 /* List-manipulation functions */
184 extern list_t *list_new(void);
185 extern int32_t list_length(const list_t *a);
186 extern list_t *list_append(list_t *a, item_t *i);
187 extern list_t *list_append_list(list_t *a, list_t *b);
188 /* Returns an item from the list (index starts at 0), or NULL */
189 extern item_t *list_elem(list_t *l, int32_t index);
191 /* Convenience functions */
192 extern list_t *new_closure(closure_t *cl);
193 extern void add_closure(dict_t *dict, cstring_t name, apply_fn apply);
194 extern void *find_cl_if(dict_t *dict, cstring_t name, uint32_t type,
195 bool_t fail_if_invalid, cstring_t desc,
197 extern item_t *dict_find_item(dict_t *dict, cstring_t key, bool_t required,
198 cstring_t desc, struct cloc loc);
199 extern string_t dict_read_string(dict_t *dict, cstring_t key, bool_t required,
200 cstring_t desc, struct cloc loc);
201 extern uint32_t dict_read_number(dict_t *dict, cstring_t key, bool_t required,
202 cstring_t desc, struct cloc loc,
204 /* return value can safely be assigned to int32_t */
205 extern bool_t dict_read_bool(dict_t *dict, cstring_t key, bool_t required,
206 cstring_t desc, struct cloc loc, bool_t def);
207 extern dict_t *dict_read_dict(dict_t *dict, cstring_t key, bool_t required,
208 cstring_t desc, struct cloc loc);
209 const char **dict_read_string_array(dict_t *dict, cstring_t key,
210 bool_t required, cstring_t desc,
211 struct cloc loc, const char *const *def);
212 /* Return value is a NULL-terminated array obtained from malloc;
213 * Individual string values are still owned by config file machinery
214 * and must not be modified or freed. Returns NULL if key not
221 extern uint32_t string_to_word(cstring_t s, struct cloc loc,
222 struct flagstr *f, cstring_t desc);
223 extern uint32_t string_list_to_word(list_t *l, struct flagstr *f,
226 /***** END of configuration support *****/
228 /***** UTILITY functions *****/
230 extern char *safe_strdup(const char *string, const char *message);
231 extern void *safe_malloc(size_t size, const char *message);
232 extern void *safe_malloc_ary(size_t size, size_t count, const char *message);
233 extern void *safe_realloc_ary(void *p, size_t size, size_t count,
234 const char *message);
237 ((p)=safe_malloc(sizeof(*(p)), \
239 #define NEW_ARY(p,count) \
240 ((p)=safe_malloc_ary(sizeof(*(p)),(count), \
241 __FILE__ ":" #p "[" #count "]"))
242 #define REALLOC_ARY(p,count) \
243 ((p)=safe_realloc_ary((p),sizeof(*(p)),(count), \
244 __FILE__ ":" #p "[" #count "]"))
246 void setcloexec(int fd); /* cannot fail */
247 void setnonblock(int fd); /* cannot fail */
248 void pipe_cloexec(int fd[2]); /* pipe(), setcloexec() twice; cannot fail */
250 extern int sys_cmd(const char *file, const char *argc, ...);
252 extern uint64_t now_global;
253 extern struct timeval tv_now_global;
255 static const uint64_t *const now = &now_global;
256 static const struct timeval *const tv_now = &tv_now_global;
258 /* "now" is current program time, in milliseconds. It is derived
259 from tv_now. Both are provided by the event loop. */
261 /***** END of utility functions *****/
263 /***** START of max_start_pad handling *****/
265 extern int32_t site_max_start_pad, transform_max_start_pad,
268 void update_max_start_pad(int32_t *our_module_global, int32_t our_instance);
269 int32_t calculate_max_start_pad(void);
271 /***** END of max_start_pad handling *****/
273 /***** SCHEDULING support */
275 /* If nfds_io is insufficient for your needs, set it to the required
276 number and return ERANGE. timeout is in milliseconds; if it is too
277 high then lower it. It starts at -1 (==infinite). */
278 /* Note that beforepoll_fn may NOT do anything which might change the
279 fds or timeouts wanted by other registered poll loop loopers.
280 Callers should make sure of this by not making any calls into other
281 modules from the beforepoll_fn; the easiest way to ensure this is
282 for beforepoll_fn to only retreive information and not take any
285 typedef int beforepoll_fn(void *st, struct pollfd *fds, int *nfds_io,
287 typedef void afterpoll_fn(void *st, struct pollfd *fds, int nfds);
288 /* If beforepoll_fn returned ERANGE, afterpoll_fn gets nfds==0.
289 afterpoll_fn never gets !!(fds[].revents & POLLNVAL) - such
290 a report is detected as a fatal error by the event loop. */
292 /* void BEFOREPOLL_WANT_FDS(int want);
293 * Expects: int *nfds_io;
294 * Can perform non-local exit.
295 * Checks whether there is space for want fds. If so, sets *nfds_io.
296 * If not, sets *nfds_io and returns. */
297 #define BEFOREPOLL_WANT_FDS(want) do{ \
298 if (*nfds_io<(want)) { *nfds_io=(want); return ERANGE; } \
302 /* Register interest in the main loop of the program. Before a call
303 to poll() your supplied beforepoll function will be called. After
304 the call to poll() the supplied afterpoll function will be called. */
305 struct poll_interest *register_for_poll(void *st, beforepoll_fn *before,
306 afterpoll_fn *after, cstring_t desc);
307 void deregister_for_poll(struct poll_interest *i);
309 /***** END of scheduling support */
311 /***** PROGRAM LIFETIME support */
313 /* The secnet program goes through a number of phases in its lifetime.
314 Module code may arrange to be called just as various phases are
317 Remember to update the table in util.c if changing the set of
322 PHASE_GETOPTS, /* Process command-line arguments */
323 PHASE_READCONFIG, /* Parse and process configuration file */
324 PHASE_SETUP, /* Process information in configuration */
325 PHASE_DAEMONIZE, /* Become a daemon (if necessary) */
326 PHASE_GETRESOURCES, /* Obtain all external resources */
327 PHASE_DROPPRIV, /* Last chance for privileged operations */
329 PHASE_SHUTDOWN, /* About to die; delete key material, etc. */
330 PHASE_CHILDPERSIST, /* Forked long-term child: close fds, etc. */
331 /* Keep this last: */
335 /* Each module should, in its CHILDPERSIST hooks, close all fds which
336 constitute ownership of important operating system resources, or
337 which are used for IPC with other processes who want to get the
338 usual disconnection effects if the main secnet process dies.
339 CHILDPERSIST hooks are not run if the child is going to exec;
340 so fds such as described above should be CLOEXEC too. */
342 typedef void hook_fn(void *self, uint32_t newphase);
343 bool_t add_hook(uint32_t phase, hook_fn *f, void *state);
344 bool_t remove_hook(uint32_t phase, hook_fn *f, void *state);
346 extern uint32_t current_phase;
347 extern void enter_phase(uint32_t new_phase);
349 void phase_hooks_init(void); /* for main() only */
350 void clear_phase_hooks(uint32_t phase); /* for afterfork() */
352 /* Some features (like netlink 'soft' routes) require that secnet
353 retain root privileges. They should indicate that here when
355 extern bool_t require_root_privileges;
356 extern cstring_t require_root_privileges_explanation;
358 /* Some modules may want to know whether secnet is going to drop
359 privilege, so that they know whether to do privsep. Call only
360 in phases SETUP and later. */
361 bool_t will_droppriv(void);
363 /***** END of program lifetime support *****/
365 /***** MODULE support *****/
367 /* Module initialisation function type - modules export one function of
368 this type which is called to initialise them. For dynamically loaded
369 modules it's called "secnet_module". */
370 typedef void init_module(dict_t *dict);
372 extern void init_builtin_modules(dict_t *dict);
374 extern init_module resolver_module;
375 extern init_module random_module;
376 extern init_module udp_module;
377 extern init_module polypath_module;
378 extern init_module util_module;
379 extern init_module site_module;
380 extern init_module transform_eax_module;
381 extern init_module transform_cbcmac_module;
382 extern init_module netlink_module;
383 extern init_module rsa_module;
384 extern init_module dh_module;
385 extern init_module md5_module;
386 extern init_module slip_module;
387 extern init_module tun_module;
388 extern init_module sha1_module;
389 extern init_module log_module;
391 /***** END of module support *****/
393 /***** CLOSURE TYPES and interface definitions *****/
396 #define CL_RESOLVER 1
397 #define CL_RANDOMSRC 2
398 #define CL_SIGPUBKEY 3
399 #define CL_SIGPRIVKEY 4
404 #define CL_TRANSFORM 9
408 #define CL_NETLINK 14
412 struct alg_msg_data {
417 /* PURE closure requires no interface */
419 /* RESOLVER interface */
421 /* Answers to queries are delivered to a function of this
422 type. 'address' will be NULL if there was a problem with the query. It
423 will be freed once resolve_answer_fn returns. naddrs is the actual
424 size of the array at addrs; was_naddrs is the number of addresses
425 actually found in the DNS, which may be bigger if addrs is equal
426 to MAX_PEER_ADDRS (ie there were too many). */
427 typedef void resolve_answer_fn(void *st, const struct comm_addr *addrs,
428 int naddrs, int was_naddrs,
429 const char *name, const char *failwhy);
430 /* name is the same ptr as passed to request, so its lifetime must
432 typedef bool_t resolve_request_fn(void *st, cstring_t name,
433 int remoteport, struct comm_if *comm,
434 resolve_answer_fn *cb, void *cst);
437 resolve_request_fn *request;
440 /* RANDOMSRC interface */
442 /* Return some random data. Cannot fail. */
443 typedef void random_fn(void *st, int32_t bytes, uint8_t *buff);
451 /* SIGPUBKEY interface */
453 typedef void sig_sethash_fn(void *st, struct hash_if *hash);
454 typedef bool_t sig_unpick_fn(void *sst, struct buffer_if *msg,
455 struct alg_msg_data *sig);
456 typedef bool_t sig_checksig_fn(void *st, uint8_t *data, int32_t datalen,
457 const struct alg_msg_data *sig);
458 struct sigpubkey_if {
460 sig_sethash_fn *sethash; /* must be called before check, if non-0 */
461 sig_unpick_fn *unpick;
462 sig_checksig_fn *check;
465 /* SIGPRIVKEY interface */
467 /* Appends the signature to msg.
468 * Can fail and returnn False, eg if the buffer is too small. */
469 typedef bool_t sig_makesig_fn(void *st, uint8_t *data, int32_t datalen,
470 struct buffer_if *msg);
471 struct sigprivkey_if {
473 sig_sethash_fn *sethash; /* must be called before sign, if non-0 */
474 sig_makesig_fn *sign;
480 /* This struct is pure data; in particular comm's clients may
482 struct comm_if *comm;
484 int ix; /* see comment `Re comm_addr.ix' in udp.c */
487 struct comm_clientinfo; /* private for comm */
489 typedef struct comm_clientinfo *comm_clientinfo_fn(void *state, dict_t*,
491 /* A comm client may call this during configuration, and then pass
492 * the resulting comm_clientinfo* to some or all sendmsg calls.
493 * The semantics depend on the dict and defined by the comm, and
494 * should be documented in README. */
497 comm_notify_whynot_general,
498 comm_notify_whynot_unpick,
499 comm_notify_whynot_name_local,
500 comm_notify_whynot_name_remote,
503 /* Return True if the packet was processed, and shouldn't be passed to
504 any other potential receivers. (buf is freed iff True returned.) */
505 typedef bool_t comm_notify_fn(void *state, struct buffer_if *buf,
506 const struct comm_addr *source,
507 struct priomsg *whynot);
508 typedef void comm_request_notify_fn(void *commst, void *nst,
510 typedef void comm_release_notify_fn(void *commst, void *nst,
512 typedef bool_t comm_sendmsg_fn(void *commst, struct buffer_if *buf,
513 const struct comm_addr *dest,
514 struct comm_clientinfo* /* 0 OK */);
515 /* Only returns false if (we know that) the local network
516 * environment is such that this address cannot work; transient
517 * or unknown/unexpected failures return true. */
518 typedef const char *comm_addr_to_string_fn(void *commst,
519 const struct comm_addr *ca);
520 /* Returned string is in a static buffer. */
523 comm_clientinfo_fn *clientinfo;
524 comm_request_notify_fn *request_notify;
525 comm_release_notify_fn *release_notify;
526 comm_sendmsg_fn *sendmsg;
527 comm_addr_to_string_fn *addr_to_string;
530 bool_t iaddr_equal(const union iaddr *ia, const union iaddr *ib,
533 static inline const char *comm_addr_to_string(const struct comm_addr *ca)
535 return ca->comm->addr_to_string(ca->comm->st, ca);
538 static inline bool_t comm_addr_equal(const struct comm_addr *a,
539 const struct comm_addr *b)
541 return a->comm==b->comm && iaddr_equal(&a->ia,&b->ia,False);
546 #define LOG_MESSAGE_BUFLEN 1023
548 typedef void log_msg_fn(void *st, int class, const char *message, ...);
549 typedef void log_vmsg_fn(void *st, int class, const char *message,
553 log_vmsg_fn *vlogfn; /* printf format checking. Use [v]slilog instead */
554 char buff[LOG_MESSAGE_BUFLEN+1];
556 /* (convenience functions, defined in util.c) */
557 extern void slilog(struct log_if *lf, int class, const char *message, ...)
559 extern void vslilog(struct log_if *lf, int class, const char *message, va_list)
562 /* Versions which take (parts of) (multiple) messages, using \n to
563 * distinguish one message from another. */
564 extern void slilog_part(struct log_if *lf, int class, const char *message, ...)
566 extern void vslilog_part(struct log_if *lf, int class, const char *message,
567 va_list) FORMAT(printf,3,0);
571 /* Pretty much a placeholder; allows starting and stopping of processing,
573 typedef void site_control_fn(void *st, bool_t run);
574 typedef uint32_t site_status_fn(void *st);
577 site_control_fn *control;
578 site_status_fn *status;
581 /* TRANSFORM interface */
583 /* A reversable transformation. Transforms buffer in-place; may add
584 data to start or end. (Reverse transformations decrease
585 length, of course.) Transformations may be key-dependent, in which
586 case key material is passed in at initialisation time. They may
587 also depend on internal factors (eg. time) and keep internal
588 state. A struct transform_if only represents a particular type of
589 transformation; instances of the transformation (eg. with
590 particular key material) have a different C type. The same
591 secret key will be used in opposite directions between a pair of
592 secnets; one of these pairs will get direction==False, the other True. */
594 typedef struct transform_inst_if *transform_createinstance_fn(void *st);
595 typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen,
597 typedef bool_t transform_valid_fn(void *st); /* 0: no key; 1: ok */
598 typedef void transform_delkey_fn(void *st);
599 typedef void transform_destroyinstance_fn(void *st);
602 transform_apply_ok = 0, /* all is well (everyone may assume==0) */
603 transform_apply_err = 1, /* any other problem */
604 transform_apply_seqrange = 2,
605 /* message decrypted but sequence number was out of recent range */
606 transform_apply_seqdupe = 3,
607 /* message decrypted but was dupe of recent packet */
608 } transform_apply_return;
611 transform_apply_return_badseq(transform_apply_return problem) {
612 return problem == transform_apply_seqrange ||
613 problem == transform_apply_seqdupe;
616 typedef transform_apply_return transform_apply_fn(void *st,
617 struct buffer_if *buf, const char **errmsg);
619 struct transform_inst_if {
621 transform_setkey_fn *setkey;
622 transform_valid_fn *valid;
623 transform_delkey_fn *delkey;
624 transform_apply_fn *forwards;
625 transform_apply_fn *reverse;
626 transform_destroyinstance_fn *destroy;
629 struct transform_if {
632 int32_t keylen; /* <<< INT_MAX */
633 transform_createinstance_fn *create;
636 /* NETLINK interface */
638 /* Used by netlink to deliver to site, and by site to deliver to
639 netlink. cid is the client identifier returned by
640 netlink_regnets_fn. If buf has size 0 then the function is just
641 being called for its site-effects (eg. making the site code attempt
642 to bring up a network link) */
643 typedef void netlink_deliver_fn(void *st, struct buffer_if *buf);
644 /* site code can tell netlink when outgoing packets will be dropped,
645 so netlink can generate appropriate ICMP and make routing decisions */
646 #define LINK_QUALITY_UNUSED 0 /* This link is unused, do not make this netlink */
647 #define LINK_QUALITY_DOWN 1 /* No chance of a packet being delivered right away*/
648 #define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */
649 #define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */
650 #define LINK_QUALITY_UP 4 /* Link active */
651 #define MAXIMUM_LINK_QUALITY 3
652 typedef void netlink_link_quality_fn(void *st, uint32_t quality);
653 typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver,
654 void *dst, uint32_t *localmtu_r /* NULL ok */);
655 typedef void netlink_output_config_fn(void *st, struct buffer_if *buf);
656 typedef bool_t netlink_check_config_fn(void *st, struct buffer_if *buf);
657 typedef void netlink_set_mtu_fn(void *st, int32_t new_mtu);
660 netlink_register_fn *reg;
661 netlink_deliver_fn *deliver;
662 netlink_link_quality_fn *set_quality;
663 netlink_set_mtu_fn *set_mtu;
668 /* Returns public key as a malloced hex string */
669 typedef string_t dh_makepublic_fn(void *st, uint8_t *secret,
671 /* Fills buffer (up to buflen) with shared secret */
672 typedef void dh_makeshared_fn(void *st, uint8_t *secret,
673 int32_t secretlen, cstring_t rempublic,
674 uint8_t *sharedsecret, int32_t buflen);
677 int32_t len; /* Approximate size of modulus in bytes */
678 int32_t ceil_len; /* Number of bytes just sufficient to contain modulus */
679 dh_makepublic_fn *makepublic;
680 dh_makeshared_fn *makeshared;
685 typedef void hash_init_fn(void *st /* slen bytes alloc'd by caller */);
686 typedef void hash_update_fn(void *st, const void *buf, int32_t len);
687 typedef void hash_final_fn(void *st, uint8_t *digest /* hlen bytes */);
689 int32_t slen; /* State length in bytes */
690 int32_t hlen; /* Hash output length in bytes */
692 hash_update_fn *update;
693 hash_final_fn *final;
696 /* BUFFER interface */
700 cstring_t owner; /* Set to constant string */
701 struct cloc loc; /* Where we were defined */
704 int32_t size; /* Size of buffer contents */
705 int32_t alloclen; /* Total length allocated at base */
708 /***** LOG functions *****/
710 #define M_DEBUG_CONFIG 0x001
711 #define M_DEBUG_PHASE 0x002
712 #define M_DEBUG 0x004
714 #define M_NOTICE 0x010
715 #define M_WARNING 0x020
717 #define M_SECURITY 0x080
718 #define M_FATAL 0x100
720 /* The fatal() family of functions require messages that do not end in '\n' */
721 extern NORETURN(fatal(const char *message, ...)) FORMAT(printf,1,2);
722 extern NORETURN(fatal_perror(const char *message, ...)) FORMAT(printf,1,2);
723 extern NORETURN(fatal_status(int status, const char *message, ...))
725 extern NORETURN(fatal_perror_status(int status, const char *message, ...))
728 /* Convenient nonfatal logging. Requires message that does not end in '\n'.
729 * If class contains M_FATAL, exits (after entering PHASE_SHUTDOWN).
730 * lg, errnoval and loc may sensibly be 0. desc must NOT be 0.
731 * lg_[v]perror save and restore errno. */
732 void lg_vperror(struct log_if *lg, const char *desc, struct cloc *loc,
733 int class, int errnoval, const char *fmt, va_list al)
735 void lg_perror(struct log_if *lg, const char *desc, struct cloc *loc,
736 int class, int errnoval, const char *fmt, ...)
738 void lg_exitstatus(struct log_if *lg, const char *desc, struct cloc *loc,
739 int class, int status, const char *progname);
741 /* The cfgfatal() family of functions require messages that end in '\n' */
742 extern NORETURN(cfgfatal(struct cloc loc, cstring_t facility,
743 const char *message, ...)) FORMAT(printf,3,4);
744 extern void cfgfile_postreadcheck(struct cloc loc, FILE *f);
745 extern NORETURN(vcfgfatal_maybefile(FILE *maybe_f, struct cloc loc,
746 cstring_t facility, const char *message,
749 extern NORETURN(cfgfatal_maybefile(FILE *maybe_f, struct cloc loc,
751 const char *message, ...))
754 extern void Message(uint32_t class, const char *message, ...)
756 extern void log_from_fd(int fd, cstring_t prefix, struct log_if *log);
758 /***** END of log functions *****/
760 #define STRING2(x) #x
761 #define STRING(x) STRING2(x)
763 #define FILLZERO(obj) (memset(&(obj),0,sizeof((obj))))
764 #define ARRAY_SIZE(ary) (sizeof((ary))/sizeof((ary)[0]))
767 * void COPY_OBJ( OBJECT& dst, const OBJECT& src);
768 * void COPY_ARRAY(OBJECT *dst, const OBJECT *src, INTEGER count);
769 * // Typesafe: we check that the type OBJECT is the same in both cases.
770 * // It is OK to use COPY_OBJ on an array object, provided dst is
771 * // _actually_ the whole array object and not decayed into a
772 * // pointer (e.g. a formal parameter).
774 #define COPY_OBJ(dst,src) \
775 (&(dst)==&(src), memcpy(&(dst),&(src),sizeof((dst))))
776 #define COPY_ARRAY(dst,src,count) \
777 (&(dst)[0]==&(src)[0], memcpy((dst),(src),sizeof((dst)[0])*(count)))
779 #endif /* secnet_h */