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
58 typedef char *string_t;
59 typedef const char *cstring_t;
61 #define False (_Bool)0
67 struct sockaddr_in sin;
69 struct sockaddr_in6 sin6;
75 #define KEYIDSZ (GRPIDSZ+ALGIDSZ)
76 /* Changing these is complex: this is the group id plus algo id */
77 /* They are costructed by pubkeys.fl.pl. Also hardcoded in _PR_ */
78 struct sigkeyid { uint8_t b[KEYIDSZ]; };
80 #define SIGKEYID_PR_FMT "%02x%02x%02x%02x%02x"
81 #define SIGKEYID_PR_VAL(id) /* SIGKEYID_PR_VAL(const sigkeyid *id) */ \
82 ((id) == (const struct sigkeyid*)0, (id)->b[0]), \
83 (id)->b[1],(id)->b[2],(id)->b[3],(id)->b[4]
84 static inline bool_t sigkeyid_equal(const struct sigkeyid *a,
85 const struct sigkeyid *b) {
86 return !memcmp(a->b, b->b, KEYIDSZ);
89 #define ASSERT(x) do { if (!(x)) { fatal("assertion failed line %d file " \
90 __FILE__,__LINE__); } } while(0)
94 extern char version[];
97 extern uint32_t message_level;
98 extern bool_t secnet_is_daemon;
99 extern struct log_if *system_log;
102 extern void start_signal_handling(void);
104 void afterfork(void);
105 /* Must be called before exec in every child made after
106 start_signal_handling. Safe to call in earlier children too. */
108 void childpersist_closefd_hook(void *fd_p, uint32_t newphase);
109 /* Convenience hook function for use with add_hook PHASE_CHILDPERSIST.
110 With `int fd' in your state struct, pass fd_p=&fd. The hook checks
111 whether fd>=0, so you can use it for an fd which is only sometimes
112 open. This function will set fd to -1, so it is idempotent. */
114 /***** CONFIGURATION support *****/
116 extern bool_t just_check_config; /* If True then we're going to exit after
117 reading the configuration file */
118 extern bool_t background; /* If True then we'll eventually run as a daemon */
120 typedef struct dict dict_t; /* Configuration dictionary */
121 typedef struct closure closure_t;
122 typedef struct item item_t;
123 typedef struct list list_t; /* A list of items */
125 /* Configuration file location, for error-reporting */
131 /* Modules export closures, which can be invoked from the configuration file.
132 "Invoking" a closure usually returns another closure (of a different
133 type), but can actually return any configuration object. */
134 typedef list_t *(apply_fn)(closure_t *self, struct cloc loc,
135 dict_t *context, list_t *data);
137 cstring_t description; /* For debugging */
138 uint32_t type; /* Central registry... */
140 void *interface; /* Interface for use inside secnet; depends on type */
143 enum types { t_null, t_bool, t_string, t_number, t_dict, t_closure };
156 /* Note that it is unwise to use this structure directly; use the list
157 manipulation functions instead. */
163 /* In the following two lookup functions, NULL means 'not found' */
164 /* Lookup a value in the specified dictionary, or its parents */
165 extern list_t *dict_lookup(dict_t *dict, cstring_t key);
166 /* Lookup a value in just the specified dictionary */
167 extern list_t *dict_lookup_primitive(dict_t *dict, cstring_t key);
168 /* Add a value to the specified dictionary */
169 extern void dict_add(dict_t *dict, cstring_t key, list_t *val);
170 /* Obtain an array of keys in the dictionary. malloced; caller frees */
171 extern cstring_t *dict_keys(dict_t *dict);
173 /* List-manipulation functions */
174 extern list_t *list_new(void);
175 extern int32_t list_length(const list_t *a);
176 extern list_t *list_append(list_t *a, item_t *i);
177 extern list_t *list_append_list(list_t *a, list_t *b);
178 /* Returns an item from the list (index starts at 0), or NULL */
179 extern item_t *list_elem(list_t *l, int32_t index);
181 /* Convenience functions */
182 extern list_t *new_closure(closure_t *cl);
183 extern void add_closure(dict_t *dict, cstring_t name, apply_fn apply);
184 extern void *find_cl_if(dict_t *dict, cstring_t name, uint32_t type,
185 bool_t fail_if_invalid, cstring_t desc,
187 extern item_t *dict_find_item(dict_t *dict, cstring_t key, bool_t required,
188 cstring_t desc, struct cloc loc);
189 extern string_t dict_read_string(dict_t *dict, cstring_t key, bool_t required,
190 cstring_t desc, struct cloc loc);
191 extern uint32_t dict_read_number(dict_t *dict, cstring_t key, bool_t required,
192 cstring_t desc, struct cloc loc,
194 /* return value can safely be assigned to int32_t */
195 extern bool_t dict_read_bool(dict_t *dict, cstring_t key, bool_t required,
196 cstring_t desc, struct cloc loc, bool_t def);
197 extern dict_t *dict_read_dict(dict_t *dict, cstring_t key, bool_t required,
198 cstring_t desc, struct cloc loc);
199 const char **dict_read_string_array(dict_t *dict, cstring_t key,
200 bool_t required, cstring_t desc,
201 struct cloc loc, const char *const *def);
202 /* Return value is a NULL-terminated array obtained from malloc;
203 * Individual string values are still owned by config file machinery
204 * and must not be modified or freed. Returns NULL if key not
211 extern uint32_t string_to_word(cstring_t s, struct cloc loc,
212 struct flagstr *f, cstring_t desc);
213 extern uint32_t string_list_to_word(list_t *l, struct flagstr *f,
216 /***** END of configuration support *****/
218 /***** UTILITY functions *****/
220 extern char *safe_strdup(const char *string, const char *message);
221 extern void *safe_malloc(size_t size, const char *message);
222 extern void *safe_malloc_ary(size_t size, size_t count, const char *message);
223 extern void *safe_realloc_ary(void *p, size_t size, size_t count,
224 const char *message);
227 ((p)=safe_malloc(sizeof(*(p)), \
229 #define NEW_ARY(p,count) \
230 ((p)=safe_malloc_ary(sizeof(*(p)),(count), \
231 __FILE__ ":" #p "[" #count "]"))
232 #define REALLOC_ARY(p,count) \
233 ((p)=safe_realloc_ary((p),sizeof(*(p)),(count), \
234 __FILE__ ":" #p "[" #count "]"))
236 void setcloexec(int fd); /* cannot fail */
237 void setnonblock(int fd); /* cannot fail */
238 void pipe_cloexec(int fd[2]); /* pipe(), setcloexec() twice; cannot fail */
240 extern int sys_cmd(const char *file, const char *argc, ...);
242 extern uint64_t now_global;
243 extern struct timeval tv_now_global;
245 static const uint64_t *const now = &now_global;
246 static const struct timeval *const tv_now = &tv_now_global;
248 /* "now" is current program time, in milliseconds. It is derived
249 from tv_now. Both are provided by the event loop. */
251 /***** END of utility functions *****/
253 /***** START of max_start_pad handling *****/
255 extern int32_t site_max_start_pad, transform_max_start_pad,
258 void update_max_start_pad(int32_t *our_module_global, int32_t our_instance);
259 int32_t calculate_max_start_pad(void);
261 /***** END of max_start_pad handling *****/
263 /***** SCHEDULING support */
265 /* If nfds_io is insufficient for your needs, set it to the required
266 number and return ERANGE. timeout is in milliseconds; if it is too
267 high then lower it. It starts at -1 (==infinite). */
268 /* Note that beforepoll_fn may NOT do anything which might change the
269 fds or timeouts wanted by other registered poll loop loopers.
270 Callers should make sure of this by not making any calls into other
271 modules from the beforepoll_fn; the easiest way to ensure this is
272 for beforepoll_fn to only retreive information and not take any
275 typedef int beforepoll_fn(void *st, struct pollfd *fds, int *nfds_io,
277 typedef void afterpoll_fn(void *st, struct pollfd *fds, int nfds);
278 /* If beforepoll_fn returned ERANGE, afterpoll_fn gets nfds==0.
279 afterpoll_fn never gets !!(fds[].revents & POLLNVAL) - such
280 a report is detected as a fatal error by the event loop. */
282 /* void BEFOREPOLL_WANT_FDS(int want);
283 * Expects: int *nfds_io;
284 * Can perform non-local exit.
285 * Checks whether there is space for want fds. If so, sets *nfds_io.
286 * If not, sets *nfds_io and returns. */
287 #define BEFOREPOLL_WANT_FDS(want) do{ \
288 if (*nfds_io<(want)) { *nfds_io=(want); return ERANGE; } \
292 /* Register interest in the main loop of the program. Before a call
293 to poll() your supplied beforepoll function will be called. After
294 the call to poll() the supplied afterpoll function will be called. */
295 struct poll_interest *register_for_poll(void *st, beforepoll_fn *before,
296 afterpoll_fn *after, cstring_t desc);
297 void deregister_for_poll(struct poll_interest *i);
299 /***** END of scheduling support */
301 /***** PROGRAM LIFETIME support */
303 /* The secnet program goes through a number of phases in its lifetime.
304 Module code may arrange to be called just as various phases are
307 Remember to update the table in util.c if changing the set of
312 PHASE_GETOPTS, /* Process command-line arguments */
313 PHASE_READCONFIG, /* Parse and process configuration file */
314 PHASE_SETUP, /* Process information in configuration */
315 PHASE_DAEMONIZE, /* Become a daemon (if necessary) */
316 PHASE_GETRESOURCES, /* Obtain all external resources */
317 PHASE_DROPPRIV, /* Last chance for privileged operations */
319 PHASE_SHUTDOWN, /* About to die; delete key material, etc. */
320 PHASE_CHILDPERSIST, /* Forked long-term child: close fds, etc. */
321 /* Keep this last: */
325 /* Each module should, in its CHILDPERSIST hooks, close all fds which
326 constitute ownership of important operating system resources, or
327 which are used for IPC with other processes who want to get the
328 usual disconnection effects if the main secnet process dies.
329 CHILDPERSIST hooks are not run if the child is going to exec;
330 so fds such as described above should be CLOEXEC too. */
332 typedef void hook_fn(void *self, uint32_t newphase);
333 bool_t add_hook(uint32_t phase, hook_fn *f, void *state);
334 bool_t remove_hook(uint32_t phase, hook_fn *f, void *state);
336 extern uint32_t current_phase;
337 extern void enter_phase(uint32_t new_phase);
339 void phase_hooks_init(void); /* for main() only */
340 void clear_phase_hooks(uint32_t phase); /* for afterfork() */
342 /* Some features (like netlink 'soft' routes) require that secnet
343 retain root privileges. They should indicate that here when
345 extern bool_t require_root_privileges;
346 extern cstring_t require_root_privileges_explanation;
348 /* Some modules may want to know whether secnet is going to drop
349 privilege, so that they know whether to do privsep. Call only
350 in phases SETUP and later. */
351 bool_t will_droppriv(void);
353 /***** END of program lifetime support *****/
355 /***** MODULE support *****/
357 /* Module initialisation function type - modules export one function of
358 this type which is called to initialise them. For dynamically loaded
359 modules it's called "secnet_module". */
360 typedef void init_module(dict_t *dict);
362 extern void init_builtin_modules(dict_t *dict);
364 extern init_module resolver_module;
365 extern init_module random_module;
366 extern init_module udp_module;
367 extern init_module polypath_module;
368 extern init_module util_module;
369 extern init_module site_module;
370 extern init_module transform_eax_module;
371 extern init_module transform_cbcmac_module;
372 extern init_module netlink_module;
373 extern init_module rsa_module;
374 extern init_module dh_module;
375 extern init_module md5_module;
376 extern init_module slip_module;
377 extern init_module tun_module;
378 extern init_module sha1_module;
379 extern init_module log_module;
381 /***** END of module support *****/
383 /***** CLOSURE TYPES and interface definitions *****/
386 #define CL_RESOLVER 1
387 #define CL_RANDOMSRC 2
388 #define CL_SIGPUBKEY 3
389 #define CL_SIGPRIVKEY 4
394 #define CL_TRANSFORM 9
398 #define CL_NETLINK 14
402 struct alg_msg_data {
407 /* PURE closure requires no interface */
409 /* RESOLVER interface */
411 /* Answers to queries are delivered to a function of this
412 type. 'address' will be NULL if there was a problem with the query. It
413 will be freed once resolve_answer_fn returns. naddrs is the actual
414 size of the array at addrs; was_naddrs is the number of addresses
415 actually found in the DNS, which may be bigger if addrs is equal
416 to MAX_PEER_ADDRS (ie there were too many). */
417 typedef void resolve_answer_fn(void *st, const struct comm_addr *addrs,
418 int naddrs, int was_naddrs,
419 const char *name, const char *failwhy);
420 /* name is the same ptr as passed to request, so its lifetime must
422 typedef bool_t resolve_request_fn(void *st, cstring_t name,
423 int remoteport, struct comm_if *comm,
424 resolve_answer_fn *cb, void *cst);
427 resolve_request_fn *request;
430 /* RANDOMSRC interface */
432 /* Return some random data. Cannot fail. */
433 typedef void random_fn(void *st, int32_t bytes, uint8_t *buff);
441 /* SIGPUBKEY interface */
443 typedef void sig_sethash_fn(void *st, struct hash_if *hash);
444 typedef bool_t sig_unpick_fn(void *sst, struct buffer_if *msg,
445 struct alg_msg_data *sig);
446 typedef bool_t sig_checksig_fn(void *st, uint8_t *data, int32_t datalen,
447 const struct alg_msg_data *sig);
448 struct sigpubkey_if {
450 sig_sethash_fn *sethash; /* must be called before check, if non-0 */
451 sig_unpick_fn *unpick;
452 sig_checksig_fn *check;
455 /* SIGPRIVKEY interface */
457 /* Appends the signature to msg.
458 * Can fail and returnn False, eg if the buffer is too small. */
459 typedef bool_t sig_makesig_fn(void *st, uint8_t *data, int32_t datalen,
460 struct buffer_if *msg);
461 struct sigprivkey_if {
463 sig_sethash_fn *sethash; /* must be called before sign, if non-0 */
464 sig_makesig_fn *sign;
470 /* This struct is pure data; in particular comm's clients may
472 struct comm_if *comm;
474 int ix; /* see comment `Re comm_addr.ix' in udp.c */
477 struct comm_clientinfo; /* private for comm */
479 typedef struct comm_clientinfo *comm_clientinfo_fn(void *state, dict_t*,
481 /* A comm client may call this during configuration, and then pass
482 * the resulting comm_clientinfo* to some or all sendmsg calls.
483 * The semantics depend on the dict and defined by the comm, and
484 * should be documented in README. */
487 comm_notify_whynot_general,
488 comm_notify_whynot_unpick,
489 comm_notify_whynot_name_local,
490 comm_notify_whynot_name_remote,
493 /* Return True if the packet was processed, and shouldn't be passed to
494 any other potential receivers. (buf is freed iff True returned.) */
495 typedef bool_t comm_notify_fn(void *state, struct buffer_if *buf,
496 const struct comm_addr *source,
497 struct priomsg *whynot);
498 typedef void comm_request_notify_fn(void *commst, void *nst,
500 typedef void comm_release_notify_fn(void *commst, void *nst,
502 typedef bool_t comm_sendmsg_fn(void *commst, struct buffer_if *buf,
503 const struct comm_addr *dest,
504 struct comm_clientinfo* /* 0 OK */);
505 /* Only returns false if (we know that) the local network
506 * environment is such that this address cannot work; transient
507 * or unknown/unexpected failures return true. */
508 typedef const char *comm_addr_to_string_fn(void *commst,
509 const struct comm_addr *ca);
510 /* Returned string is in a static buffer. */
513 comm_clientinfo_fn *clientinfo;
514 comm_request_notify_fn *request_notify;
515 comm_release_notify_fn *release_notify;
516 comm_sendmsg_fn *sendmsg;
517 comm_addr_to_string_fn *addr_to_string;
520 bool_t iaddr_equal(const union iaddr *ia, const union iaddr *ib,
523 static inline const char *comm_addr_to_string(const struct comm_addr *ca)
525 return ca->comm->addr_to_string(ca->comm->st, ca);
528 static inline bool_t comm_addr_equal(const struct comm_addr *a,
529 const struct comm_addr *b)
531 return a->comm==b->comm && iaddr_equal(&a->ia,&b->ia,False);
536 #define LOG_MESSAGE_BUFLEN 1023
538 typedef void log_msg_fn(void *st, int class, const char *message, ...);
539 typedef void log_vmsg_fn(void *st, int class, const char *message,
543 log_vmsg_fn *vlogfn; /* printf format checking. Use [v]slilog instead */
544 char buff[LOG_MESSAGE_BUFLEN+1];
546 /* (convenience functions, defined in util.c) */
547 extern void slilog(struct log_if *lf, int class, const char *message, ...)
549 extern void vslilog(struct log_if *lf, int class, const char *message, va_list)
552 /* Versions which take (parts of) (multiple) messages, using \n to
553 * distinguish one message from another. */
554 extern void slilog_part(struct log_if *lf, int class, const char *message, ...)
556 extern void vslilog_part(struct log_if *lf, int class, const char *message,
557 va_list) FORMAT(printf,3,0);
561 /* Pretty much a placeholder; allows starting and stopping of processing,
563 typedef void site_control_fn(void *st, bool_t run);
564 typedef uint32_t site_status_fn(void *st);
567 site_control_fn *control;
568 site_status_fn *status;
571 /* TRANSFORM interface */
573 /* A reversable transformation. Transforms buffer in-place; may add
574 data to start or end. (Reverse transformations decrease
575 length, of course.) Transformations may be key-dependent, in which
576 case key material is passed in at initialisation time. They may
577 also depend on internal factors (eg. time) and keep internal
578 state. A struct transform_if only represents a particular type of
579 transformation; instances of the transformation (eg. with
580 particular key material) have a different C type. The same
581 secret key will be used in opposite directions between a pair of
582 secnets; one of these pairs will get direction==False, the other True. */
584 typedef struct transform_inst_if *transform_createinstance_fn(void *st);
585 typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen,
587 typedef bool_t transform_valid_fn(void *st); /* 0: no key; 1: ok */
588 typedef void transform_delkey_fn(void *st);
589 typedef void transform_destroyinstance_fn(void *st);
592 transform_apply_ok = 0, /* all is well (everyone may assume==0) */
593 transform_apply_err = 1, /* any other problem */
594 transform_apply_seqrange = 2,
595 /* message decrypted but sequence number was out of recent range */
596 transform_apply_seqdupe = 3,
597 /* message decrypted but was dupe of recent packet */
598 } transform_apply_return;
601 transform_apply_return_badseq(transform_apply_return problem) {
602 return problem == transform_apply_seqrange ||
603 problem == transform_apply_seqdupe;
606 typedef transform_apply_return transform_apply_fn(void *st,
607 struct buffer_if *buf, const char **errmsg);
609 struct transform_inst_if {
611 transform_setkey_fn *setkey;
612 transform_valid_fn *valid;
613 transform_delkey_fn *delkey;
614 transform_apply_fn *forwards;
615 transform_apply_fn *reverse;
616 transform_destroyinstance_fn *destroy;
619 struct transform_if {
622 int32_t keylen; /* <<< INT_MAX */
623 transform_createinstance_fn *create;
626 /* NETLINK interface */
628 /* Used by netlink to deliver to site, and by site to deliver to
629 netlink. cid is the client identifier returned by
630 netlink_regnets_fn. If buf has size 0 then the function is just
631 being called for its site-effects (eg. making the site code attempt
632 to bring up a network link) */
633 typedef void netlink_deliver_fn(void *st, struct buffer_if *buf);
634 /* site code can tell netlink when outgoing packets will be dropped,
635 so netlink can generate appropriate ICMP and make routing decisions */
636 #define LINK_QUALITY_UNUSED 0 /* This link is unused, do not make this netlink */
637 #define LINK_QUALITY_DOWN 1 /* No chance of a packet being delivered right away*/
638 #define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */
639 #define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */
640 #define LINK_QUALITY_UP 4 /* Link active */
641 #define MAXIMUM_LINK_QUALITY 3
642 typedef void netlink_link_quality_fn(void *st, uint32_t quality);
643 typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver,
644 void *dst, uint32_t *localmtu_r /* NULL ok */);
645 typedef void netlink_output_config_fn(void *st, struct buffer_if *buf);
646 typedef bool_t netlink_check_config_fn(void *st, struct buffer_if *buf);
647 typedef void netlink_set_mtu_fn(void *st, int32_t new_mtu);
650 netlink_register_fn *reg;
651 netlink_deliver_fn *deliver;
652 netlink_link_quality_fn *set_quality;
653 netlink_set_mtu_fn *set_mtu;
658 /* Returns public key as a malloced hex string */
659 typedef string_t dh_makepublic_fn(void *st, uint8_t *secret,
661 /* Fills buffer (up to buflen) with shared secret */
662 typedef void dh_makeshared_fn(void *st, uint8_t *secret,
663 int32_t secretlen, cstring_t rempublic,
664 uint8_t *sharedsecret, int32_t buflen);
667 int32_t len; /* Approximate size of modulus in bytes */
668 int32_t ceil_len; /* Number of bytes just sufficient to contain modulus */
669 dh_makepublic_fn *makepublic;
670 dh_makeshared_fn *makeshared;
675 typedef void hash_init_fn(void *st /* slen bytes alloc'd by caller */);
676 typedef void hash_update_fn(void *st, const void *buf, int32_t len);
677 typedef void hash_final_fn(void *st, uint8_t *digest /* hlen bytes */);
679 int32_t slen; /* State length in bytes */
680 int32_t hlen; /* Hash output length in bytes */
682 hash_update_fn *update;
683 hash_final_fn *final;
686 /* BUFFER interface */
690 cstring_t owner; /* Set to constant string */
691 struct cloc loc; /* Where we were defined */
694 int32_t size; /* Size of buffer contents */
695 int32_t alloclen; /* Total length allocated at base */
698 /***** LOG functions *****/
700 #define M_DEBUG_CONFIG 0x001
701 #define M_DEBUG_PHASE 0x002
702 #define M_DEBUG 0x004
704 #define M_NOTICE 0x010
705 #define M_WARNING 0x020
707 #define M_SECURITY 0x080
708 #define M_FATAL 0x100
710 /* The fatal() family of functions require messages that do not end in '\n' */
711 extern NORETURN(fatal(const char *message, ...)) FORMAT(printf,1,2);
712 extern NORETURN(fatal_perror(const char *message, ...)) FORMAT(printf,1,2);
713 extern NORETURN(fatal_status(int status, const char *message, ...))
715 extern NORETURN(fatal_perror_status(int status, const char *message, ...))
718 /* Convenient nonfatal logging. Requires message that does not end in '\n'.
719 * If class contains M_FATAL, exits (after entering PHASE_SHUTDOWN).
720 * lg, errnoval and loc may sensibly be 0. desc must NOT be 0.
721 * lg_[v]perror save and restore errno. */
722 void lg_vperror(struct log_if *lg, const char *desc, struct cloc *loc,
723 int class, int errnoval, const char *fmt, va_list al)
725 void lg_perror(struct log_if *lg, const char *desc, struct cloc *loc,
726 int class, int errnoval, const char *fmt, ...)
728 void lg_exitstatus(struct log_if *lg, const char *desc, struct cloc *loc,
729 int class, int status, const char *progname);
731 /* The cfgfatal() family of functions require messages that end in '\n' */
732 extern NORETURN(cfgfatal(struct cloc loc, cstring_t facility,
733 const char *message, ...)) FORMAT(printf,3,4);
734 extern void cfgfile_postreadcheck(struct cloc loc, FILE *f);
735 extern NORETURN(vcfgfatal_maybefile(FILE *maybe_f, struct cloc loc,
736 cstring_t facility, const char *message,
739 extern NORETURN(cfgfatal_maybefile(FILE *maybe_f, struct cloc loc,
741 const char *message, ...))
744 extern void Message(uint32_t class, const char *message, ...)
746 extern void log_from_fd(int fd, cstring_t prefix, struct log_if *log);
748 /***** END of log functions *****/
750 #define STRING2(x) #x
751 #define STRING(x) STRING2(x)
753 #define FILLZERO(obj) (memset(&(obj),0,sizeof((obj))))
754 #define ARRAY_SIZE(ary) (sizeof((ary))/sizeof((ary)[0]))
757 * void COPY_OBJ( OBJECT& dst, const OBJECT& src);
758 * void COPY_ARRAY(OBJECT *dst, const OBJECT *src, INTEGER count);
759 * // Typesafe: we check that the type OBJECT is the same in both cases.
760 * // It is OK to use COPY_OBJ on an array object, provided dst is
761 * // _actually_ the whole array object and not decayed into a
762 * // pointer (e.g. a formal parameter).
764 #define COPY_OBJ(dst,src) \
765 (&(dst)==&(src), memcpy(&(dst),&(src),sizeof((dst))))
766 #define COPY_ARRAY(dst,src,count) \
767 (&(dst)[0]==&(src)[0], memcpy((dst),(src),sizeof((dst)[0])*(count)))
769 #endif /* secnet_h */