Recast more internal string routines to use growable-strings
[exim.git] / src / src / functions.h
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
7
8
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. */
13
14
15 #ifdef EXIM_PERL
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 *);
20 #endif
21
22
23 #ifdef SUPPORT_TLS
24 extern const char *
25 std_dh_prime_default(void);
26 extern const char *
27 std_dh_prime_named(const uschar *);
28
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);
41
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 *);
46
47 extern void * tls_client_start(int, host_item *, address_item *,
48 transport_instance *,
49 # ifdef SUPPORT_DANE
50 dns_answer *,
51 # endif
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 *);
70 # ifndef USE_GNUTLS
71 extern BOOL tls_openssl_options_parse(uschar *, long *);
72 # endif
73 extern uschar * tls_field_from_dn(uschar *, const uschar *);
74 extern BOOL tls_is_name_for_cert(const uschar *, void *);
75
76 # ifdef SUPPORT_DANE
77 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
78 # endif
79
80 #endif /*SUPPORT_TLS*/
81
82
83 /* Everything else... */
84
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 **);
88
89 extern tree_node *acl_var_create(uschar *);
90 extern void acl_var_write(uschar *, uschar *, void *);
91
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);
99 #endif
100
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
110
111 extern int auth_get_data(uschar **, uschar *, int);
112 extern int auth_get_no64_data(uschar **, uschar *);
113 extern void auth_show_supported(FILE *);
114 extern uschar *auth_xtextencode(uschar *, int);
115 extern int auth_xtextdecode(uschar *, uschar **);
116
117 #ifdef EXPERIMENTAL_ARC
118 extern gstring *authres_arc(gstring *);
119 #endif
120 #ifndef DISABLE_DKIM
121 extern gstring *authres_dkim(gstring *);
122 #endif
123 #ifdef EXPERIMENTAL_DMARC
124 extern gstring *authres_dmarc(gstring *);
125 #endif
126 extern gstring *authres_smtpauth(gstring *);
127 #ifdef SUPPORT_SPF
128 extern gstring *authres_spf(gstring *);
129 #endif
130
131 extern uschar *b64encode(uschar *, int);
132 extern int b64decode(const uschar *, uschar **);
133 extern int bdat_getc(unsigned);
134 extern uschar *bdat_getbuf(unsigned *);
135 extern int bdat_ungetc(int);
136 extern void bdat_flush_data(void);
137
138 extern void bits_clear(unsigned int *, size_t, int *);
139 extern void bits_set(unsigned int *, size_t, int *);
140
141 extern void cancel_cutthrough_connection(BOOL, const uschar *);
142 extern int check_host(void *, const uschar *, const uschar **, uschar **);
143 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
144 extern pid_t child_open_uid(const uschar **, const uschar **, int,
145 uid_t *, gid_t *, int *, int *, uschar *, BOOL);
146 extern BOOL cleanup_environment(void);
147 extern void cutthrough_data_puts(uschar *, int);
148 extern void cutthrough_data_put_nl(void);
149 extern uschar *cutthrough_finaldot(void);
150 extern BOOL cutthrough_flush_send(void);
151 extern BOOL cutthrough_headers_send(void);
152 extern BOOL cutthrough_predata(void);
153 extern void release_cutthrough_connection(const uschar *);
154
155 extern void daemon_go(void);
156
157 #ifdef EXPERIMENTAL_DCC
158 extern int dcc_process(uschar **);
159 #endif
160
161 extern void debug_logging_activate(uschar *, uschar *);
162 extern void debug_logging_stop(void);
163 extern void debug_print_argv(const uschar **);
164 extern void debug_print_ids(uschar *);
165 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
166 extern void debug_print_string(uschar *);
167 extern void debug_print_tree(tree_node *);
168 extern void debug_vprintf(int, const char *, va_list);
169 extern void decode_bits(unsigned int *, size_t, int *,
170 uschar *, bit_table *, int, uschar *, int);
171 extern address_item *deliver_make_addr(uschar *, BOOL);
172 extern void deliver_init(void);
173 extern void delivery_log(int, address_item *, int, uschar *);
174 extern int deliver_message(uschar *, BOOL, BOOL);
175 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
176 extern void deliver_set_expansions(address_item *);
177 extern int deliver_split_address(address_item *);
178 extern void deliver_succeeded(address_item *);
179
180 extern uschar *deliver_get_sender_address (uschar *id);
181 extern void delivery_re_exec(int);
182
183 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
184 #ifndef DISABLE_DKIM
185 extern uschar *dkim_exim_query_dns_txt(uschar *);
186 extern void dkim_exim_sign_init(void);
187
188 extern BOOL dkim_transport_write_message(transport_ctx *,
189 struct ob_dkim *, const uschar ** errstr);
190 #endif
191 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
192 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
193 extern void dns_build_reverse(const uschar *, uschar *);
194 extern void dns_init(BOOL, BOOL, BOOL);
195 extern BOOL dns_is_aa(const dns_answer *);
196 extern BOOL dns_is_secure(const dns_answer *);
197 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
198 extern void dns_pattern_init(void);
199 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
200 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
201 extern uschar *dns_text_type(int);
202 extern void dscp_list_to_stream(FILE *);
203 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
204
205 extern void enq_end(uschar *);
206 extern BOOL enq_start(uschar *, unsigned);
207 #ifndef DISABLE_EVENT
208 extern uschar *event_raise(uschar *, const uschar *, uschar *);
209 extern void msg_event_raise(const uschar *, const address_item *);
210 #endif
211 extern const uschar * exim_errstr(int);
212 extern void exim_exit(int, const uschar *);
213 extern void exim_nullstd(void);
214 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
215 extern void exim_wait_tick(struct timeval *, int);
216 extern int exp_bool(address_item *addr,
217 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
218 uschar *svalue, BOOL *rvalue);
219 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
220 extern uschar *expand_file_big_buffer(const uschar *);
221 extern uschar *expand_string(uschar *); /* public, cannot make const */
222 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
223 extern uschar *expand_hide_passwords(uschar * );
224 extern uschar *expand_string_copy(const uschar *);
225 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
226 extern void modify_variable(uschar *, void *);
227
228 extern BOOL fd_ready(int, int);
229
230 extern int filter_interpret(uschar *, int, address_item **, uschar **);
231 extern BOOL filter_personal(string_item *, BOOL);
232 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
233 extern BOOL filter_system_interpret(address_item **, uschar **);
234
235 extern uschar * fn_hdrs_added(void);
236
237 extern void gstring_reset_unused(gstring *);
238
239 extern void header_add(int, const char *, ...);
240 extern int header_checkname(header_line *, BOOL);
241 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
242 extern int host_address_extract_port(uschar *);
243 extern uschar *host_and_ident(BOOL);
244 extern int host_aton(const uschar *, int *);
245 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
246 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
247 extern void host_build_log_info(void);
248 extern void host_build_sender_fullhost(void);
249 extern int host_find_byname(host_item *, const uschar *, int,
250 const uschar **, BOOL);
251 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
252 uschar *, const dnssec_domains *, const uschar **, BOOL *);
253 extern ip_address_item *host_find_interfaces(void);
254 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
255 extern BOOL host_is_tls_on_connect_port(int);
256 extern int host_item_get_port(host_item *);
257 extern void host_mask(int, int *, int);
258 extern int host_name_lookup(void);
259 extern int host_nmtoa(int, int *, int, uschar *, int);
260 extern uschar *host_ntoa(int, const void *, uschar *, int *);
261 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
262
263 extern uschar *imap_utf7_encode(uschar *, const uschar *,
264 uschar, uschar *, uschar **);
265
266 extern void invert_address(uschar *, uschar *);
267 extern int ip_addr(void *, int, const uschar *, int);
268 extern int ip_bind(int, int, uschar *, int);
269 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
270 extern int ip_connectedsocket(int, const uschar *, int, int,
271 int, host_item *, uschar **, const blob *);
272 extern int ip_get_address_family(int);
273 extern void ip_keepalive(int, const uschar *, BOOL);
274 extern int ip_recv(client_conn_ctx *, uschar *, int, int);
275 extern int ip_socket(int, int);
276
277 extern int ip_tcpsocket(const uschar *, uschar **, int);
278 extern int ip_unixsocket(const uschar *, uschar **);
279 extern int ip_streamsocket(const uschar *, uschar **, int);
280
281 extern int ipv6_nmtoa(int *, uschar *);
282
283 extern uschar *local_part_quote(uschar *);
284 extern int log_create(uschar *);
285 extern int log_create_as_exim(uschar *);
286 extern void log_close_all(void);
287
288 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
289 extern BOOL macro_read_assignment(uschar *);
290 extern uschar *macros_expand(int, int *, BOOL *);
291 extern void mainlog_close(void);
292 #ifdef WITH_CONTENT_SCAN
293 extern int malware(const uschar *, int);
294 extern int malware_in_file(uschar *);
295 extern void malware_init(void);
296 extern void malware_show_supported(FILE *);
297 #endif
298 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
299 unsigned int *, int, int, const uschar **);
300 extern int match_address_list_basic(const uschar *, const uschar **, int);
301 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
302 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
303 const uschar *, const uschar **);
304 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
305 unsigned int *, int, BOOL, const uschar **);
306 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
307 const uschar **);
308 extern void md5_end(md5 *, const uschar *, int, uschar *);
309 extern void md5_mid(md5 *, const uschar *);
310 extern void md5_start(md5 *);
311 extern void millisleep(int);
312 #ifdef WITH_CONTENT_SCAN
313 struct mime_boundary_context;
314 extern int mime_acl_check(uschar *acl, FILE *f,
315 struct mime_boundary_context *, uschar **, uschar **);
316 extern int mime_decode(const uschar **);
317 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
318 extern int mime_regex(const uschar **);
319 extern void mime_set_anomaly(int);
320 #endif
321 extern uschar *moan_check_errorcopy(uschar *);
322 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
323 BOOL, uschar *);
324 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
325 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
326 header_line *, FILE *, uschar *);
327 extern void moan_tell_someone(uschar *, address_item *,
328 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
329 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
330 extern void moan_write_from(FILE *);
331 extern FILE *modefopen(const uschar *, const char *, mode_t);
332
333 extern int open_cutthrough_connection( address_item * addr );
334
335 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
336 BOOL);
337 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
338 const uschar *, uschar *, error_block **);
339 extern uschar *parse_find_address_end(uschar *, BOOL);
340 extern uschar *parse_find_at(uschar *);
341 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
342 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
343 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
344 extern uschar *parse_date_time(uschar *str, time_t *t);
345 extern int vaguely_random_number(int);
346 #ifdef SUPPORT_TLS
347 extern int vaguely_random_number_fallback(int);
348 #endif
349
350 extern BOOL queue_action(uschar *, int, uschar **, int, int);
351 extern void queue_check_only(void);
352 extern void queue_list(int, uschar **, int);
353 extern void queue_count(void);
354 extern void queue_run(uschar *, uschar *, BOOL);
355
356 extern int random_number(int);
357 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
358 uschar *, uschar *, uschar *, ugid_block *, address_item **,
359 uschar **, error_block **, int *, uschar *);
360 extern int rda_is_filter(const uschar *);
361 extern BOOL readconf_depends(driver_instance *, uschar *);
362 extern void readconf_driver_init(uschar *, driver_instance **,
363 driver_info *, int, void *, int, optionlist *, int);
364 extern uschar *readconf_find_option(void *);
365 extern void readconf_main(BOOL);
366 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
367 extern BOOL readconf_print(uschar *, uschar *, BOOL);
368 extern uschar *readconf_printtime(int);
369 extern uschar *readconf_readname(uschar *, int, uschar *);
370 extern int readconf_readtime(const uschar *, int, BOOL);
371 extern void readconf_rest(void);
372 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
373 extern void readconf_save_config(const uschar *);
374 extern void read_message_body(BOOL);
375 extern void receive_bomb_out(uschar *, uschar *);
376 extern BOOL receive_check_fs(int);
377 extern BOOL receive_check_set_sender(uschar *);
378 extern BOOL receive_msg(BOOL);
379 extern int_eximarith_t receive_statvfs(BOOL, int *);
380 extern void receive_swallow_smtp(void);
381 #ifdef WITH_CONTENT_SCAN
382 extern int regex(const uschar **);
383 #endif
384 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
385 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
386 extern void retry_add_item(address_item *, uschar *, int);
387 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
388 uschar **, uschar **);
389 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
390 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
391 dbdata_retry *, time_t);
392 extern void retry_update(address_item **, address_item **, address_item **);
393 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
394 extern uschar *rewrite_address_qualify(uschar *, BOOL);
395 extern header_line *rewrite_header(header_line *,
396 const uschar *, const uschar *,
397 rewrite_rule *, int, BOOL);
398 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
399 rewrite_rule *);
400 extern void rewrite_test(uschar *);
401 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
402 uschar **);
403 extern int route_address(address_item *, address_item **, address_item **,
404 address_item **, address_item **, int);
405 extern int route_check_prefix(const uschar *, const uschar *);
406 extern int route_check_suffix(const uschar *, const uschar *);
407 extern BOOL route_findgroup(uschar *, gid_t *);
408 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
409 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
410 uschar **);
411 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
412 struct passwd **, uid_t *, uschar **);
413 extern void route_init(void);
414 extern void route_show_supported(FILE *);
415 extern void route_tidyup(void);
416
417 extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
418 int, int *);
419 extern int search_findtype(const uschar *, int);
420 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
421 int *);
422 extern void *search_open(uschar *, int, int, uid_t *, gid_t *);
423 extern void search_tidyup(void);
424 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
425 extern void sha1_end(hctx *, const uschar *, int, uschar *);
426 extern void sha1_mid(hctx *, const uschar *);
427 extern void sha1_start(hctx *);
428 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
429 uschar *, address_item **, uschar **);
430 extern void sigalrm_handler(int);
431 extern BOOL smtp_buffered(void);
432 extern void smtp_closedown(uschar *);
433 extern void smtp_command_timeout_exit(void);
434 extern void smtp_command_sigterm_exit(void);
435 extern void smtp_data_timeout_exit(void);
436 extern void smtp_data_sigint_exit(void);
437 extern uschar *smtp_cmd_hist(void);
438 extern int smtp_connect(smtp_connect_args *, const blob *);
439 extern int smtp_sock_connect(host_item *, int, int, uschar *,
440 transport_instance * tb, int, const blob *);
441 extern int smtp_feof(void);
442 extern int smtp_ferror(void);
443 extern uschar *smtp_get_connection_info(void);
444 extern BOOL smtp_get_interface(uschar *, int, address_item *,
445 uschar **, uschar *);
446 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
447 extern int smtp_getc(unsigned);
448 extern uschar *smtp_getbuf(unsigned *);
449 extern void smtp_get_cache(void);
450 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
451 extern void smtp_log_no_mail(void);
452 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
453 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int);
454 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
455 extern void smtp_reset(void *);
456 extern void smtp_respond(uschar *, int, BOOL, uschar *);
457 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
458 extern void smtp_port_for_connect(host_item *, int);
459 extern void smtp_send_prohibition_message(int, uschar *);
460 extern int smtp_setup_msg(void);
461 extern BOOL smtp_start_session(void);
462 extern int smtp_ungetc(int);
463 extern BOOL smtp_verify_helo(void);
464 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
465 #ifdef WITH_CONTENT_SCAN
466 extern int spam(const uschar **);
467 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
468 #endif
469 extern void spool_clear_header_globals(void);
470 extern uschar *spool_dname(const uschar *, uschar *);
471 extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
472 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
473 extern int spool_open_datafile(uschar *);
474 extern int spool_open_temp(uschar *);
475 extern int spool_read_header(uschar *, BOOL, BOOL);
476 extern uschar *spool_sname(const uschar *, uschar *);
477 extern int spool_write_header(uschar *, int, uschar **);
478 extern int stdin_getc(unsigned);
479 extern int stdin_feof(void);
480 extern int stdin_ferror(void);
481 extern int stdin_ungetc(int);
482 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
483 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
484 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
485 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
486 extern uschar *string_base62(unsigned long int);
487 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
488 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
489 extern int string_compare_by_pointer(const void *, const void *);
490 extern uschar *string_copy_dnsdomain(uschar *);
491 extern uschar *string_copy_malloc(const uschar *);
492 extern uschar *string_copylc(const uschar *);
493 extern uschar *string_copynlc(uschar *, int);
494 extern uschar *string_dequote(const uschar **);
495 extern gstring *string_fmt_append(gstring *, const char *, ...) ALMOST_PRINTF(2,3);
496 extern BOOL string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
497 extern uschar *string_format_size(int, uschar *);
498 extern uschar *string_from_gstring(gstring *);
499 extern gstring *string_get(unsigned);
500 extern int string_interpret_escape(const uschar **);
501 extern int string_is_ip_address(const uschar *, int *);
502 #ifdef SUPPORT_I18N
503 extern BOOL string_is_utf8(const uschar *);
504 #endif
505 extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
506 extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
507 extern const uschar *string_printing2(const uschar *, BOOL);
508 extern uschar *string_split_message(uschar *);
509 extern uschar *string_timediff(struct timeval *);
510 extern uschar *string_timesince(struct timeval *);
511 extern uschar *string_unprinting(uschar *);
512 #ifdef SUPPORT_I18N
513 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
514 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
515 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
516 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
517 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
518 #endif
519 extern gstring *string_vformat(gstring *, BOOL, const char *, va_list);
520 extern int strcmpic(const uschar *, const uschar *);
521 extern int strncmpic(const uschar *, const uschar *, int);
522 extern uschar *strstric(uschar *, uschar *, BOOL);
523
524 #ifdef EXIM_TFO_PROBE
525 extern void tfo_probe(void);
526 #endif
527 extern void timesince(struct timeval * diff, struct timeval * then);
528 extern void tls_modify_variables(tls_support *);
529 extern uschar *tod_stamp(int);
530
531 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
532 BOOL *, oicf, void*);
533 extern void transport_init(void);
534 extern void transport_do_pass_socket(const uschar *, const uschar *,
535 const uschar *, uschar *, int);
536 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
537 int);
538 extern uschar *transport_rcpt_address(address_item *, BOOL);
539 extern BOOL transport_set_up_command(const uschar ***, uschar *,
540 BOOL, int, address_item *, uschar *, uschar **);
541 extern void transport_update_waiting(host_item *, uschar *);
542 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
543 extern void transport_write_reset(int);
544 extern BOOL transport_write_string(int, const char *, ...);
545 extern BOOL transport_headers_send(transport_ctx *,
546 BOOL (*)(transport_ctx *, uschar *, int));
547 extern void transport_show_supported(FILE *);
548 extern BOOL transport_write_message(transport_ctx *, int);
549 extern void tree_add_duplicate(uschar *, address_item *);
550 extern void tree_add_nonrecipient(uschar *);
551 extern void tree_add_unusable(host_item *);
552 extern int tree_insertnode(tree_node **, tree_node *);
553 extern tree_node *tree_search(tree_node *, const uschar *);
554 extern void tree_write(tree_node *, FILE *);
555 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
556
557 #ifdef WITH_CONTENT_SCAN
558 extern void unspool_mbox(void);
559 #endif
560 #ifdef SUPPORT_I18N
561 extern void utf8_version_report(FILE *);
562 #endif
563
564 extern int verify_address(address_item *, FILE *, int, int, int, int,
565 uschar *, uschar *, BOOL *);
566 extern int verify_check_dnsbl(int, const uschar **, uschar **);
567 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
568 uschar *, uschar *, int, int *);
569 extern int verify_check_headers(uschar **);
570 extern int verify_check_header_names_ascii(uschar **);
571 extern int verify_check_host(uschar **);
572 extern int verify_check_notblind(void);
573 extern int verify_check_given_host(const uschar **, const host_item *);
574 extern int verify_check_this_host(const uschar **, unsigned int *,
575 const uschar*, const uschar *, const uschar **);
576 extern address_item *verify_checked_sender(uschar *);
577 extern void verify_get_ident(int);
578 extern BOOL verify_sender(int *, uschar **);
579 extern BOOL verify_sender_preliminary(int *, uschar **);
580 extern void version_init(void);
581
582 extern BOOL write_chunk(transport_ctx *, uschar *, int);
583 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
584
585
586 /* vi: aw
587 */
588 /* End of functions.h */