1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
9 /* Prototypes for functions that appear in various modules. Gathered together
10 to avoid having a lot of tiddly little headers with only a couple of lines in
11 them. However, some functions that are used (or not used) by utility programs
12 are in in fact in separate headers. */
16 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
17 uschar **) WARN_UNUSED_RESULT;
18 extern void cleanup_perl(void);
19 extern uschar *init_perl(uschar *);
25 std_dh_prime_default(void);
27 std_dh_prime_named(const uschar *);
29 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
30 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
31 extern uschar * tls_cert_issuer(void *, uschar * mod);
32 extern uschar * tls_cert_not_before(void *, uschar * mod);
33 extern uschar * tls_cert_not_after(void *, uschar * mod);
34 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
35 extern uschar * tls_cert_serial_number(void *, uschar * mod);
36 extern uschar * tls_cert_signature(void *, uschar * mod);
37 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
38 extern uschar * tls_cert_subject(void *, uschar * mod);
39 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
40 extern uschar * tls_cert_version(void *, uschar * mod);
42 extern uschar * tls_cert_der_b64(void * cert);
43 extern uschar * tls_cert_fprt_md5(void *);
44 extern uschar * tls_cert_fprt_sha1(void *);
45 extern uschar * tls_cert_fprt_sha256(void *);
47 extern void * tls_client_start(int, host_item *, address_item *,
52 tls_support *, uschar **);
53 extern void tls_close(void *, int);
54 extern BOOL tls_could_read(void);
55 extern int tls_export_cert(uschar *, size_t, void *);
56 extern int tls_feof(void);
57 extern int tls_ferror(void);
58 extern void tls_free_cert(void **);
59 extern int tls_getc(unsigned);
60 extern uschar *tls_getbuf(unsigned *);
61 extern void tls_get_cache(void);
62 extern int tls_import_cert(const uschar *, void **);
63 extern int tls_read(void *, uschar *, size_t);
64 extern int tls_server_start(const uschar *, uschar **);
65 extern BOOL tls_smtp_buffered(void);
66 extern int tls_ungetc(int);
67 extern int tls_write(void *, const uschar *, size_t, BOOL);
68 extern uschar *tls_validate_require_cipher(void);
69 extern void tls_version_report(FILE *);
71 extern BOOL tls_openssl_options_parse(uschar *, long *);
73 extern uschar * tls_field_from_dn(uschar *, const uschar *);
74 extern BOOL tls_is_name_for_cert(const uschar *, void *);
77 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
80 #endif /*SUPPORT_TLS*/
83 /* Everything else... */
85 extern acl_block *acl_read(uschar *(*)(void), uschar **);
86 extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
87 extern int acl_eval(int, uschar *, uschar **, uschar **);
89 extern tree_node *acl_var_create(uschar *);
90 extern void acl_var_write(uschar *, uschar *, void *);
92 #ifdef EXPERIMENTAL_ARC
93 extern void *arc_ams_setup_sign_bodyhash(void);
94 extern const uschar *arc_header_feed(gstring *, BOOL);
95 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
96 extern void arc_sign_init(void);
97 extern const uschar *acl_verify_arc(void);
98 extern uschar * fn_arc_domains(void);
101 extern void assert_no_variables(void *, int, const char *, int);
102 extern int auth_call_pam(const uschar *, uschar **);
103 extern int auth_call_pwcheck(uschar *, uschar **);
104 extern int auth_call_radius(const uschar *, uschar **);
105 extern int auth_call_saslauthd(const uschar *, const uschar *,
106 const uschar *, const uschar *, uschar **);
107 extern int auth_check_serv_cond(auth_instance *);
108 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
109 extern int auth_client_item(void *, auth_instance *, const uschar **,
110 unsigned, int, uschar *, int);
113 extern int auth_get_data(uschar **, const uschar *, int);
114 extern int auth_get_no64_data(uschar **, uschar *);
115 extern int auth_prompt(const uschar *);
116 extern int auth_read_input(const uschar *);
117 extern void auth_show_supported(FILE *);
118 extern uschar *auth_xtextencode(uschar *, int);
119 extern int auth_xtextdecode(uschar *, uschar **);
121 #ifdef EXPERIMENTAL_ARC
122 extern gstring *authres_arc(gstring *);
125 extern gstring *authres_dkim(gstring *);
127 #ifdef EXPERIMENTAL_DMARC
128 extern gstring *authres_dmarc(gstring *);
130 extern gstring *authres_smtpauth(gstring *);
132 extern gstring *authres_spf(gstring *);
135 extern uschar *b64encode(const uschar *, int);
136 extern int b64decode(const uschar *, uschar **);
137 extern int bdat_getc(unsigned);
138 extern uschar *bdat_getbuf(unsigned *);
139 extern int bdat_ungetc(int);
140 extern void bdat_flush_data(void);
142 extern void bits_clear(unsigned int *, size_t, int *);
143 extern void bits_set(unsigned int *, size_t, int *);
145 extern void cancel_cutthrough_connection(BOOL, const uschar *);
146 extern int check_host(void *, const uschar *, const uschar **, uschar **);
147 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
148 extern pid_t child_open_uid(const uschar **, const uschar **, int,
149 uid_t *, gid_t *, int *, int *, uschar *, BOOL);
150 extern BOOL cleanup_environment(void);
151 extern void cutthrough_data_puts(uschar *, int);
152 extern void cutthrough_data_put_nl(void);
153 extern uschar *cutthrough_finaldot(void);
154 extern BOOL cutthrough_flush_send(void);
155 extern BOOL cutthrough_headers_send(void);
156 extern BOOL cutthrough_predata(void);
157 extern void release_cutthrough_connection(const uschar *);
159 extern void daemon_go(void);
161 #ifdef EXPERIMENTAL_DCC
162 extern int dcc_process(uschar **);
165 extern void debug_logging_activate(uschar *, uschar *);
166 extern void debug_logging_stop(void);
167 extern void debug_print_argv(const uschar **);
168 extern void debug_print_ids(uschar *);
169 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
170 extern void debug_print_string(uschar *);
171 extern void debug_print_tree(tree_node *);
172 extern void debug_vprintf(int, const char *, va_list);
173 extern void decode_bits(unsigned int *, size_t, int *,
174 uschar *, bit_table *, int, uschar *, int);
175 extern address_item *deliver_make_addr(uschar *, BOOL);
176 extern void deliver_init(void);
177 extern void delivery_log(int, address_item *, int, uschar *);
178 extern int deliver_message(uschar *, BOOL, BOOL);
179 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
180 extern void deliver_set_expansions(address_item *);
181 extern int deliver_split_address(address_item *);
182 extern void deliver_succeeded(address_item *);
184 extern uschar *deliver_get_sender_address (uschar *id);
185 extern void delivery_re_exec(int);
187 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
189 extern uschar *dkim_exim_query_dns_txt(uschar *);
190 extern void dkim_exim_sign_init(void);
192 extern BOOL dkim_transport_write_message(transport_ctx *,
193 struct ob_dkim *, const uschar ** errstr);
195 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
196 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
197 extern void dns_build_reverse(const uschar *, uschar *);
198 extern void dns_init(BOOL, BOOL, BOOL);
199 extern BOOL dns_is_aa(const dns_answer *);
200 extern BOOL dns_is_secure(const dns_answer *);
201 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
202 extern void dns_pattern_init(void);
203 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
204 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
205 extern uschar *dns_text_type(int);
206 extern void dscp_list_to_stream(FILE *);
207 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
209 extern void enq_end(uschar *);
210 extern BOOL enq_start(uschar *, unsigned);
211 #ifndef DISABLE_EVENT
212 extern uschar *event_raise(uschar *, const uschar *, uschar *);
213 extern void msg_event_raise(const uschar *, const address_item *);
215 extern const uschar * exim_errstr(int);
216 extern void exim_exit(int, const uschar *);
217 extern void exim_nullstd(void);
218 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
219 extern void exim_wait_tick(struct timeval *, int);
220 extern int exp_bool(address_item *addr,
221 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
222 uschar *svalue, BOOL *rvalue);
223 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
224 extern uschar *expand_file_big_buffer(const uschar *);
225 extern uschar *expand_string(uschar *); /* public, cannot make const */
226 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
227 extern uschar *expand_hide_passwords(uschar * );
228 extern uschar *expand_string_copy(const uschar *);
229 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
230 extern void modify_variable(uschar *, void *);
232 extern BOOL fd_ready(int, int);
234 extern int filter_interpret(uschar *, int, address_item **, uschar **);
235 extern BOOL filter_personal(string_item *, BOOL);
236 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
237 extern BOOL filter_system_interpret(address_item **, uschar **);
239 extern uschar * fn_hdrs_added(void);
241 extern void gstring_reset_unused(gstring *);
243 extern void header_add(int, const char *, ...);
244 extern int header_checkname(header_line *, BOOL);
245 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
246 extern int host_address_extract_port(uschar *);
247 extern uschar *host_and_ident(BOOL);
248 extern int host_aton(const uschar *, int *);
249 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
250 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
251 extern void host_build_log_info(void);
252 extern void host_build_sender_fullhost(void);
253 extern int host_find_byname(host_item *, const uschar *, int,
254 const uschar **, BOOL);
255 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
256 uschar *, const dnssec_domains *, const uschar **, BOOL *);
257 extern ip_address_item *host_find_interfaces(void);
258 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
259 extern BOOL host_is_tls_on_connect_port(int);
260 extern int host_item_get_port(host_item *);
261 extern void host_mask(int, int *, int);
262 extern int host_name_lookup(void);
263 extern int host_nmtoa(int, int *, int, uschar *, int);
264 extern uschar *host_ntoa(int, const void *, uschar *, int *);
265 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
267 extern uschar *imap_utf7_encode(uschar *, const uschar *,
268 uschar, uschar *, uschar **);
270 extern void invert_address(uschar *, uschar *);
271 extern int ip_addr(void *, int, const uschar *, int);
272 extern int ip_bind(int, int, uschar *, int);
273 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
274 extern int ip_connectedsocket(int, const uschar *, int, int,
275 int, host_item *, uschar **, const blob *);
276 extern int ip_get_address_family(int);
277 extern void ip_keepalive(int, const uschar *, BOOL);
278 extern int ip_recv(client_conn_ctx *, uschar *, int, int);
279 extern int ip_socket(int, int);
281 extern int ip_tcpsocket(const uschar *, uschar **, int);
282 extern int ip_unixsocket(const uschar *, uschar **);
283 extern int ip_streamsocket(const uschar *, uschar **, int);
285 extern int ipv6_nmtoa(int *, uschar *);
287 extern uschar *local_part_quote(uschar *);
288 extern int log_create(uschar *);
289 extern int log_create_as_exim(uschar *);
290 extern void log_close_all(void);
292 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
293 extern BOOL macro_read_assignment(uschar *);
294 extern uschar *macros_expand(int, int *, BOOL *);
295 extern void mainlog_close(void);
296 #ifdef WITH_CONTENT_SCAN
297 extern int malware(const uschar *, int);
298 extern int malware_in_file(uschar *);
299 extern void malware_init(void);
300 extern void malware_show_supported(FILE *);
302 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
303 unsigned int *, int, int, const uschar **);
304 extern int match_address_list_basic(const uschar *, const uschar **, int);
305 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
306 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
307 const uschar *, const uschar **);
308 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
309 unsigned int *, int, BOOL, const uschar **);
310 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
312 extern void md5_end(md5 *, const uschar *, int, uschar *);
313 extern void md5_mid(md5 *, const uschar *);
314 extern void md5_start(md5 *);
315 extern void millisleep(int);
316 #ifdef WITH_CONTENT_SCAN
317 struct mime_boundary_context;
318 extern int mime_acl_check(uschar *acl, FILE *f,
319 struct mime_boundary_context *, uschar **, uschar **);
320 extern int mime_decode(const uschar **);
321 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
322 extern int mime_regex(const uschar **);
323 extern void mime_set_anomaly(int);
325 extern uschar *moan_check_errorcopy(uschar *);
326 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
328 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
329 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
330 header_line *, FILE *, uschar *);
331 extern void moan_tell_someone(uschar *, address_item *,
332 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
333 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
334 extern void moan_write_from(FILE *);
335 extern FILE *modefopen(const uschar *, const char *, mode_t);
337 extern int open_cutthrough_connection( address_item * addr );
339 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
341 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
342 const uschar *, uschar *, error_block **);
343 extern uschar *parse_find_address_end(uschar *, BOOL);
344 extern uschar *parse_find_at(uschar *);
345 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
346 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
347 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
348 extern uschar *parse_date_time(uschar *str, time_t *t);
349 extern int vaguely_random_number(int);
351 extern int vaguely_random_number_fallback(int);
354 extern BOOL queue_action(uschar *, int, uschar **, int, int);
355 extern void queue_check_only(void);
356 extern void queue_list(int, uschar **, int);
357 extern void queue_count(void);
358 extern void queue_run(uschar *, uschar *, BOOL);
360 extern int random_number(int);
361 extern const uschar *rc_to_string(int);
362 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
363 uschar *, uschar *, uschar *, ugid_block *, address_item **,
364 uschar **, error_block **, int *, uschar *);
365 extern int rda_is_filter(const uschar *);
366 extern BOOL readconf_depends(driver_instance *, uschar *);
367 extern void readconf_driver_init(uschar *, driver_instance **,
368 driver_info *, int, void *, int, optionlist *, int);
369 extern uschar *readconf_find_option(void *);
370 extern void readconf_main(BOOL);
371 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
372 extern BOOL readconf_print(uschar *, uschar *, BOOL);
373 extern uschar *readconf_printtime(int);
374 extern uschar *readconf_readname(uschar *, int, uschar *);
375 extern int readconf_readtime(const uschar *, int, BOOL);
376 extern void readconf_rest(void);
377 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
378 extern void readconf_save_config(const uschar *);
379 extern void read_message_body(BOOL);
380 extern void receive_bomb_out(uschar *, uschar *);
381 extern BOOL receive_check_fs(int);
382 extern BOOL receive_check_set_sender(uschar *);
383 extern BOOL receive_msg(BOOL);
384 extern int_eximarith_t receive_statvfs(BOOL, int *);
385 extern void receive_swallow_smtp(void);
386 #ifdef WITH_CONTENT_SCAN
387 extern int regex(const uschar **);
389 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
390 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
391 extern void retry_add_item(address_item *, uschar *, int);
392 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
393 uschar **, uschar **);
394 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
395 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
396 dbdata_retry *, time_t);
397 extern void retry_update(address_item **, address_item **, address_item **);
398 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
399 extern uschar *rewrite_address_qualify(uschar *, BOOL);
400 extern header_line *rewrite_header(header_line *,
401 const uschar *, const uschar *,
402 rewrite_rule *, int, BOOL);
403 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
405 extern void rewrite_test(uschar *);
406 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
408 extern int route_address(address_item *, address_item **, address_item **,
409 address_item **, address_item **, int);
410 extern int route_check_prefix(const uschar *, const uschar *);
411 extern int route_check_suffix(const uschar *, const uschar *);
412 extern BOOL route_findgroup(uschar *, gid_t *);
413 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
414 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
416 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
417 struct passwd **, uid_t *, uschar **);
418 extern void route_init(void);
419 extern void route_show_supported(FILE *);
420 extern void route_tidyup(void);
422 extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
424 extern int search_findtype(const uschar *, int);
425 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
427 extern void *search_open(uschar *, int, int, uid_t *, gid_t *);
428 extern void search_tidyup(void);
429 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
430 extern void sha1_end(hctx *, const uschar *, int, uschar *);
431 extern void sha1_mid(hctx *, const uschar *);
432 extern void sha1_start(hctx *);
433 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
434 uschar *, address_item **, uschar **);
435 extern void sigalrm_handler(int);
436 extern BOOL smtp_buffered(void);
437 extern void smtp_closedown(uschar *);
438 extern void smtp_command_timeout_exit(void);
439 extern void smtp_command_sigterm_exit(void);
440 extern void smtp_data_timeout_exit(void);
441 extern void smtp_data_sigint_exit(void);
442 extern uschar *smtp_cmd_hist(void);
443 extern int smtp_connect(smtp_connect_args *, const blob *);
444 extern int smtp_sock_connect(host_item *, int, int, uschar *,
445 transport_instance * tb, int, const blob *);
446 extern int smtp_feof(void);
447 extern int smtp_ferror(void);
448 extern uschar *smtp_get_connection_info(void);
449 extern BOOL smtp_get_interface(uschar *, int, address_item *,
450 uschar **, uschar *);
451 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
452 extern int smtp_getc(unsigned);
453 extern uschar *smtp_getbuf(unsigned *);
454 extern void smtp_get_cache(void);
455 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
456 extern void smtp_log_no_mail(void);
457 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
458 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int);
459 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
460 extern void smtp_reset(void *);
461 extern void smtp_respond(uschar *, int, BOOL, uschar *);
462 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
463 extern void smtp_port_for_connect(host_item *, int);
464 extern void smtp_send_prohibition_message(int, uschar *);
465 extern int smtp_setup_msg(void);
466 extern BOOL smtp_start_session(void);
467 extern int smtp_ungetc(int);
468 extern BOOL smtp_verify_helo(void);
469 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
470 #ifdef WITH_CONTENT_SCAN
471 extern int spam(const uschar **);
472 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
474 extern void spool_clear_header_globals(void);
475 extern uschar *spool_dname(const uschar *, uschar *);
476 extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
477 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
478 extern int spool_open_datafile(uschar *);
479 extern int spool_open_temp(uschar *);
480 extern int spool_read_header(uschar *, BOOL, BOOL);
481 extern uschar *spool_sname(const uschar *, uschar *);
482 extern int spool_write_header(uschar *, int, uschar **);
483 extern int stdin_getc(unsigned);
484 extern int stdin_feof(void);
485 extern int stdin_ferror(void);
486 extern int stdin_ungetc(int);
487 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
488 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
489 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
490 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
491 extern uschar *string_base62(unsigned long int);
492 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
493 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
494 extern int string_compare_by_pointer(const void *, const void *);
495 extern uschar *string_copy_dnsdomain(uschar *);
496 extern uschar *string_copy_malloc(const uschar *);
497 extern uschar *string_copylc(const uschar *);
498 extern uschar *string_copynlc(uschar *, int);
499 extern uschar *string_dequote(const uschar **);
500 extern gstring *string_fmt_append(gstring *, const char *, ...) ALMOST_PRINTF(2,3);
501 extern BOOL string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
502 extern uschar *string_format_size(int, uschar *);
503 extern uschar *string_from_gstring(gstring *);
504 extern gstring *string_get(unsigned);
505 extern int string_interpret_escape(const uschar **);
506 extern int string_is_ip_address(const uschar *, int *);
508 extern BOOL string_is_utf8(const uschar *);
510 extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
511 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
512 extern const uschar *string_printing2(const uschar *, BOOL);
513 extern uschar *string_split_message(uschar *);
514 extern uschar *string_timediff(struct timeval *);
515 extern uschar *string_timesince(struct timeval *);
516 extern uschar *string_unprinting(uschar *);
518 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
519 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
520 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
521 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
522 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
524 extern gstring *string_vformat(gstring *, BOOL, const char *, va_list);
525 extern int strcmpic(const uschar *, const uschar *);
526 extern int strncmpic(const uschar *, const uschar *, int);
527 extern uschar *strstric(uschar *, uschar *, BOOL);
529 #ifdef EXIM_TFO_PROBE
530 extern void tfo_probe(void);
532 extern void timesince(struct timeval * diff, struct timeval * then);
533 extern void tls_modify_variables(tls_support *);
534 extern uschar *tod_stamp(int);
536 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
537 BOOL *, oicf, void*);
538 extern void transport_init(void);
539 extern void transport_do_pass_socket(const uschar *, const uschar *,
540 const uschar *, uschar *, int);
541 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
543 extern uschar *transport_rcpt_address(address_item *, BOOL);
544 extern BOOL transport_set_up_command(const uschar ***, uschar *,
545 BOOL, int, address_item *, uschar *, uschar **);
546 extern void transport_update_waiting(host_item *, uschar *);
547 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
548 extern void transport_write_reset(int);
549 extern BOOL transport_write_string(int, const char *, ...);
550 extern BOOL transport_headers_send(transport_ctx *,
551 BOOL (*)(transport_ctx *, uschar *, int));
552 extern void transport_show_supported(FILE *);
553 extern BOOL transport_write_message(transport_ctx *, int);
554 extern void tree_add_duplicate(uschar *, address_item *);
555 extern void tree_add_nonrecipient(uschar *);
556 extern void tree_add_unusable(host_item *);
557 extern int tree_insertnode(tree_node **, tree_node *);
558 extern tree_node *tree_search(tree_node *, const uschar *);
559 extern void tree_write(tree_node *, FILE *);
560 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
562 #ifdef WITH_CONTENT_SCAN
563 extern void unspool_mbox(void);
566 extern void utf8_version_report(FILE *);
569 extern int verify_address(address_item *, FILE *, int, int, int, int,
570 uschar *, uschar *, BOOL *);
571 extern int verify_check_dnsbl(int, const uschar **, uschar **);
572 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
573 uschar *, uschar *, int, int *);
574 extern int verify_check_headers(uschar **);
575 extern int verify_check_header_names_ascii(uschar **);
576 extern int verify_check_host(uschar **);
577 extern int verify_check_notblind(void);
578 extern int verify_check_given_host(const uschar **, const host_item *);
579 extern int verify_check_this_host(const uschar **, unsigned int *,
580 const uschar*, const uschar *, const uschar **);
581 extern address_item *verify_checked_sender(uschar *);
582 extern void verify_get_ident(int);
583 extern BOOL verify_sender(int *, uschar **);
584 extern BOOL verify_sender_preliminary(int *, uschar **);
585 extern void version_init(void);
587 extern BOOL write_chunk(transport_ctx *, uschar *, int);
588 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
593 /* End of functions.h */