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. */
18 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
19 uschar **) WARN_UNUSED_RESULT;
20 extern void cleanup_perl(void);
21 extern uschar *init_perl(uschar *);
27 std_dh_prime_default(void);
29 std_dh_prime_named(const uschar *);
31 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
32 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
33 extern uschar * tls_cert_issuer(void *, uschar * mod);
34 extern uschar * tls_cert_not_before(void *, uschar * mod);
35 extern uschar * tls_cert_not_after(void *, uschar * mod);
36 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
37 extern uschar * tls_cert_serial_number(void *, uschar * mod);
38 extern uschar * tls_cert_signature(void *, uschar * mod);
39 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
40 extern uschar * tls_cert_subject(void *, uschar * mod);
41 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
42 extern uschar * tls_cert_version(void *, uschar * mod);
44 extern uschar * tls_cert_der_b64(void * cert);
45 extern uschar * tls_cert_fprt_md5(void *);
46 extern uschar * tls_cert_fprt_sha1(void *);
47 extern uschar * tls_cert_fprt_sha256(void *);
49 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
50 void *, tls_support *, uschar **);
52 extern void tls_close(void *, int);
53 extern BOOL tls_could_read(void);
54 extern void tls_daemon_init(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 /*DISABLE_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 *);
216 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
217 extern const uschar * exim_errstr(int);
218 extern void exim_exit(int, const uschar *) NORETURN;
219 extern void exim_nullstd(void);
220 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
221 extern void exim_underbar_exit(int);
222 extern void exim_wait_tick(struct timeval *, int);
223 extern int exp_bool(address_item *addr,
224 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
225 uschar *svalue, BOOL *rvalue);
226 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
227 extern uschar *expand_file_big_buffer(const uschar *);
228 extern uschar *expand_string(uschar *); /* public, cannot make const */
229 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
230 extern uschar *expand_hide_passwords(uschar * );
231 extern uschar *expand_string_copy(const uschar *);
232 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
233 extern void modify_variable(uschar *, void *);
235 extern BOOL fd_ready(int, time_t);
237 extern int filter_interpret(uschar *, int, address_item **, uschar **);
238 extern BOOL filter_personal(string_item *, BOOL);
239 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
240 extern BOOL filter_system_interpret(address_item **, uschar **);
242 extern uschar * fn_hdrs_added(void);
244 extern void header_add(int, const char *, ...);
245 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
246 extern int header_checkname(header_line *, BOOL);
247 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
248 extern int host_address_extract_port(uschar *);
249 extern uschar *host_and_ident(BOOL);
250 extern int host_aton(const uschar *, int *);
251 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
252 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
253 extern void host_build_log_info(void);
254 extern void host_build_sender_fullhost(void);
255 extern int host_find_byname(host_item *, const uschar *, int,
256 const uschar **, BOOL);
257 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
258 uschar *, const dnssec_domains *, const uschar **, BOOL *);
259 extern ip_address_item *host_find_interfaces(void);
260 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
261 extern BOOL host_is_tls_on_connect_port(int);
262 extern int host_item_get_port(host_item *);
263 extern void host_mask(int, int *, int);
264 extern int host_name_lookup(void);
265 extern int host_nmtoa(int, int *, int, uschar *, int);
266 extern uschar *host_ntoa(int, const void *, uschar *, int *);
267 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
269 extern uschar *imap_utf7_encode(uschar *, const uschar *,
270 uschar, uschar *, uschar **);
272 extern void invert_address(uschar *, uschar *);
273 extern int ip_addr(void *, int, const uschar *, int);
274 extern int ip_bind(int, int, uschar *, int);
275 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
276 extern int ip_connectedsocket(int, const uschar *, int, int,
277 int, host_item *, uschar **, const blob *);
278 extern int ip_get_address_family(int);
279 extern void ip_keepalive(int, const uschar *, BOOL);
280 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
281 extern int ip_socket(int, int);
283 extern int ip_tcpsocket(const uschar *, uschar **, int);
284 extern int ip_unixsocket(const uschar *, uschar **);
285 extern int ip_streamsocket(const uschar *, uschar **, int);
287 extern int ipv6_nmtoa(int *, uschar *);
288 extern BOOL is_tainted_fn(const void *);
290 extern uschar *local_part_quote(uschar *);
291 extern int log_create(uschar *);
292 extern int log_create_as_exim(uschar *);
293 extern void log_close_all(void);
295 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
296 extern BOOL macro_read_assignment(uschar *);
297 extern uschar *macros_expand(int, int *, BOOL *);
298 extern void mainlog_close(void);
299 #ifdef WITH_CONTENT_SCAN
300 extern int malware(const uschar *, int);
301 extern int malware_in_file(uschar *);
302 extern void malware_init(void);
303 extern void malware_show_supported(FILE *);
305 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
306 unsigned int *, int, int, const uschar **);
307 extern int match_address_list_basic(const uschar *, const uschar **, int);
308 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
309 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
310 const uschar *, const uschar **);
311 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
312 unsigned int *, int, BOOL, const uschar **);
313 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
315 extern void md5_end(md5 *, const uschar *, int, uschar *);
316 extern void md5_mid(md5 *, const uschar *);
317 extern void md5_start(md5 *);
318 extern void millisleep(int);
319 #ifdef WITH_CONTENT_SCAN
320 struct mime_boundary_context;
321 extern int mime_acl_check(uschar *acl, FILE *f,
322 struct mime_boundary_context *, uschar **, uschar **);
323 extern int mime_decode(const uschar **);
324 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
325 extern int mime_regex(const uschar **);
326 extern void mime_set_anomaly(int);
328 extern uschar *moan_check_errorcopy(uschar *);
329 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
331 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
332 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
333 header_line *, FILE *, uschar *);
334 extern void moan_tell_someone(uschar *, address_item *,
335 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
336 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
337 extern void moan_write_from(FILE *);
338 extern FILE *modefopen(const uschar *, const char *, mode_t);
340 extern int open_cutthrough_connection( address_item * addr );
342 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
344 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
345 const uschar *, uschar *, error_block **);
346 extern uschar *parse_find_address_end(uschar *, BOOL);
347 extern uschar *parse_find_at(uschar *);
348 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
349 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
350 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
351 extern uschar *parse_date_time(uschar *str, time_t *t);
352 extern int vaguely_random_number(int);
354 extern int vaguely_random_number_fallback(int);
357 extern BOOL queue_action(uschar *, int, uschar **, int, int);
358 extern void queue_check_only(void);
359 extern void queue_list(int, uschar **, int);
360 extern void queue_count(void);
361 extern void queue_run(uschar *, uschar *, BOOL);
363 extern int random_number(int);
364 extern const uschar *rc_to_string(int);
365 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
366 uschar *, uschar *, uschar *, ugid_block *, address_item **,
367 uschar **, error_block **, int *, uschar *);
368 extern int rda_is_filter(const uschar *);
369 extern BOOL readconf_depends(driver_instance *, uschar *);
370 extern void readconf_driver_init(uschar *, driver_instance **,
371 driver_info *, int, void *, int, optionlist *, int);
372 extern uschar *readconf_find_option(void *);
373 extern void readconf_main(BOOL);
374 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
375 extern BOOL readconf_print(uschar *, uschar *, BOOL);
376 extern uschar *readconf_printtime(int);
377 extern uschar *readconf_readname(uschar *, int, uschar *);
378 extern int readconf_readtime(const uschar *, int, BOOL);
379 extern void readconf_rest(void);
380 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
381 extern void readconf_save_config(const uschar *);
382 extern void read_message_body(BOOL);
383 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
384 extern BOOL receive_check_fs(int);
385 extern BOOL receive_check_set_sender(uschar *);
386 extern BOOL receive_msg(BOOL);
387 extern int_eximarith_t receive_statvfs(BOOL, int *);
388 extern void receive_swallow_smtp(void);
389 #ifdef WITH_CONTENT_SCAN
390 extern int regex(const uschar **);
392 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
393 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
394 extern void retry_add_item(address_item *, uschar *, int);
395 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
396 uschar **, uschar **);
397 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
398 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
399 dbdata_retry *, time_t);
400 extern void retry_update(address_item **, address_item **, address_item **);
401 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
402 extern uschar *rewrite_address_qualify(uschar *, BOOL);
403 extern header_line *rewrite_header(header_line *,
404 const uschar *, const uschar *,
405 rewrite_rule *, int, BOOL);
406 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
408 extern void rewrite_test(uschar *);
409 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
411 extern int route_address(address_item *, address_item **, address_item **,
412 address_item **, address_item **, int);
413 extern int route_check_prefix(const uschar *, const uschar *);
414 extern int route_check_suffix(const uschar *, const uschar *);
415 extern BOOL route_findgroup(uschar *, gid_t *);
416 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
417 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
419 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
420 struct passwd **, uid_t *, uschar **);
421 extern void route_init(void);
422 extern void route_show_supported(FILE *);
423 extern void route_tidyup(void);
425 extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
427 extern int search_findtype(const uschar *, int);
428 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
430 extern void *search_open(uschar *, int, int, uid_t *, gid_t *);
431 extern void search_tidyup(void);
432 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
433 extern void sha1_end(hctx *, const uschar *, int, uschar *);
434 extern void sha1_mid(hctx *, const uschar *);
435 extern void sha1_start(hctx *);
436 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
437 uschar *, address_item **, uschar **);
438 extern void sigalrm_handler(int);
439 extern BOOL smtp_buffered(void);
440 extern void smtp_closedown(uschar *);
441 extern void smtp_command_timeout_exit(void) NORETURN;
442 extern void smtp_command_sigterm_exit(void) NORETURN;
443 extern void smtp_data_timeout_exit(void) NORETURN;
444 extern void smtp_data_sigint_exit(void) NORETURN;
445 extern uschar *smtp_cmd_hist(void);
446 extern int smtp_connect(smtp_connect_args *, const blob *);
447 extern int smtp_sock_connect(host_item *, int, int, uschar *,
448 transport_instance * tb, int, const blob *);
449 extern int smtp_feof(void);
450 extern int smtp_ferror(void);
451 extern uschar *smtp_get_connection_info(void);
452 extern BOOL smtp_get_interface(uschar *, int, address_item *,
453 uschar **, uschar *);
454 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
455 extern int smtp_getc(unsigned);
456 extern uschar *smtp_getbuf(unsigned *);
457 extern void smtp_get_cache(void);
458 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
459 extern void smtp_log_no_mail(void);
460 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
461 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
462 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
463 extern void *smtp_reset(void *);
464 extern void smtp_respond(uschar *, int, BOOL, uschar *);
465 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
466 extern void smtp_port_for_connect(host_item *, int);
467 extern void smtp_send_prohibition_message(int, uschar *);
468 extern int smtp_setup_msg(void);
469 extern BOOL smtp_start_session(void);
470 extern int smtp_ungetc(int);
471 extern BOOL smtp_verify_helo(void);
472 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
473 #ifdef WITH_CONTENT_SCAN
474 extern int spam(const uschar **);
475 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
477 extern void spool_clear_header_globals(void);
478 extern uschar *spool_dname(const uschar *, uschar *);
479 extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
480 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
481 extern int spool_open_datafile(uschar *);
482 extern int spool_open_temp(uschar *);
483 extern int spool_read_header(uschar *, BOOL, BOOL);
484 extern uschar *spool_sname(const uschar *, uschar *);
485 extern int spool_write_header(uschar *, int, uschar **);
486 extern int stdin_getc(unsigned);
487 extern int stdin_feof(void);
488 extern int stdin_ferror(void);
489 extern int stdin_ungetc(int);
491 extern void store_exit(void);
492 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
493 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
494 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
495 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
496 extern uschar *string_base62(unsigned long int);
497 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
498 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
499 extern int string_compare_by_pointer(const void *, const void *);
500 extern uschar *string_copy_dnsdomain(uschar *);
501 extern uschar *string_copy_malloc(const uschar *);
502 extern uschar *string_dequote(const uschar **);
503 extern uschar *string_format_size(int, uschar *);
504 extern int string_interpret_escape(const uschar **);
505 extern int string_is_ip_address(const uschar *, int *);
507 extern BOOL string_is_utf8(const uschar *);
509 extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
510 extern const uschar *string_printing2(const uschar *, BOOL);
511 extern uschar *string_split_message(uschar *);
512 extern uschar *string_timediff(struct timeval *);
513 extern uschar *string_timesince(struct timeval *);
514 extern uschar *string_unprinting(uschar *);
516 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
517 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
518 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
519 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
520 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
523 #define string_format(buf, siz, fmt, ...) \
524 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
525 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
526 const char *, ...) ALMOST_PRINTF(5,6);
528 #define string_vformat(g, flgs, fmt, ap) \
529 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
530 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
531 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
532 unsigned, unsigned, const char *, va_list);
534 #define string_open_failed(eno, fmt, ...) \
535 string_open_failed_trc(eno, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
536 extern uschar *string_open_failed_trc(int, const uschar *, unsigned,
537 const char *, ...) PRINTF_FUNCTION(4,5);
539 extern int strcmpic(const uschar *, const uschar *);
540 extern int strncmpic(const uschar *, const uschar *, int);
541 extern uschar *strstric(uschar *, uschar *, BOOL);
543 #ifdef EXIM_TFO_PROBE
544 extern void tfo_probe(void);
546 extern void timesince(struct timeval * diff, struct timeval * then);
547 extern void tls_modify_variables(tls_support *);
548 extern uschar *tod_stamp(int);
550 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
551 BOOL *, oicf, void*);
552 extern void transport_init(void);
553 extern void transport_do_pass_socket(const uschar *, const uschar *,
554 const uschar *, uschar *, int);
555 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
557 extern uschar *transport_rcpt_address(address_item *, BOOL);
558 extern BOOL transport_set_up_command(const uschar ***, uschar *,
559 BOOL, int, address_item *, uschar *, uschar **);
560 extern void transport_update_waiting(host_item *, uschar *);
561 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
562 extern void transport_write_reset(int);
563 extern BOOL transport_write_string(int, const char *, ...);
564 extern BOOL transport_headers_send(transport_ctx *,
565 BOOL (*)(transport_ctx *, uschar *, int));
566 extern void transport_show_supported(FILE *);
567 extern BOOL transport_write_message(transport_ctx *, int);
568 extern void tree_add_duplicate(uschar *, address_item *);
569 extern void tree_add_nonrecipient(uschar *);
570 extern void tree_add_unusable(host_item *);
571 extern void tree_dup(tree_node **, tree_node *);
572 extern int tree_insertnode(tree_node **, tree_node *);
573 extern tree_node *tree_search(tree_node *, const uschar *);
574 extern void tree_write(tree_node *, FILE *);
575 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
577 #ifdef WITH_CONTENT_SCAN
578 extern void unspool_mbox(void);
581 extern void utf8_version_report(FILE *);
584 extern int verify_address(address_item *, FILE *, int, int, int, int,
585 uschar *, uschar *, BOOL *);
586 extern int verify_check_dnsbl(int, const uschar **, uschar **);
587 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
588 uschar *, uschar *, int, int *);
589 extern int verify_check_headers(uschar **);
590 extern int verify_check_header_names_ascii(uschar **);
591 extern int verify_check_host(uschar **);
592 extern int verify_check_notblind(BOOL);
593 extern int verify_check_given_host(const uschar **, const host_item *);
594 extern int verify_check_this_host(const uschar **, unsigned int *,
595 const uschar*, const uschar *, const uschar **);
596 extern address_item *verify_checked_sender(uschar *);
597 extern void verify_get_ident(int);
598 extern BOOL verify_sender(int *, uschar **);
599 extern BOOL verify_sender_preliminary(int *, uschar **);
600 extern void version_init(void);
602 extern BOOL write_chunk(transport_ctx *, uschar *, int);
603 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
606 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
607 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
608 chown(<exim-uid>, <exim-gid>).
610 Probably because the idmapping is broken, misconfigured or set up in
611 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
612 case of misconfiguration, or if there are more such broken systems
613 out, I try to impose as least impact as possible and for now just write
614 a panic log entry pointing to the bug report. You're encouraged to
615 contact the developers, if you experience this issue.
617 fd the file descriptor (or -1 if not valid)
618 name the file name for error messages or for file operations,
623 returns 0 on success, -1 on failure */
626 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
628 return fchown(fd, owner, group)
629 ? exim_chown_failure(fd, name, owner, group) : 0;
633 exim_chown(const uschar *name, uid_t owner, gid_t group)
635 return chown(CCS name, owner, group)
636 ? exim_chown_failure(-1, name, owner, group) : 0;
639 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
640 /******************************************************************************/
641 /* String functions */
643 #if !defined(MACRO_PREDEF)
644 /*************************************************
645 * Copy and save string *
646 *************************************************/
648 /* This function assumes that memcpy() is faster than strcpy().
651 static inline uschar *
652 string_copy_taint_trc(const uschar *s, BOOL tainted, const char * func, int line)
654 int len = Ustrlen(s) + 1;
655 uschar *ss = store_get_3(len, tainted, func, line);
660 #define string_copy_taint(s, tainted) \
661 string_copy_taint_trc((s), tainted, __FUNCTION__, __LINE__)
663 static inline uschar *
664 string_copy(const uschar * s)
666 return string_copy_taint((s), is_tainted(s));
670 /*************************************************
671 * Copy, lowercase and save string *
672 *************************************************/
675 Argument: string to copy
676 Returns: copy of string in new store, with letters lowercased
679 static inline uschar *
680 string_copylc(const uschar *s)
682 uschar *ss = store_get(Ustrlen(s) + 1, is_tainted(s));
684 while (*s != 0) *p++ = tolower(*s++);
691 /*************************************************
692 * Copy and save string, given length *
693 *************************************************/
695 /* It is assumed the data contains no zeros. A zero is added
700 n number of characters
702 Returns: copy of string in new store
704 This is an API for local_scan hence not static.
707 static inline uschar *
708 string_copyn(const uschar *s, int n)
710 uschar *ss = store_get(n + 1, is_tainted(s));
716 /*************************************************
717 * Copy, lowercase, and save string, given length *
718 *************************************************/
720 /* It is assumed the data contains no zeros. A zero is added
725 n number of characters
727 Returns: copy of string in new store, with letters lowercased
730 static inline uschar *
731 string_copynlc(uschar *s, int n)
733 uschar *ss = store_get(n + 1, is_tainted(s));
735 while (n-- > 0) *p++ = tolower(*s++);
741 # ifndef COMPILE_UTILITY
742 /*************************************************
743 * Copy and save string in longterm store *
744 *************************************************/
746 /* This function assumes that memcpy() is faster than strcpy().
748 Argument: string to copy
749 Returns: copy of string in new store
752 static inline uschar *
753 string_copy_perm(const uschar *s, BOOL force_taint)
755 int old_pool = store_pool;
756 int len = Ustrlen(s) + 1;
759 store_pool = POOL_PERM;
760 ss = store_get(len, force_taint || is_tainted(s));
762 store_pool = old_pool;
769 /* sprintf into a buffer, taint-unchecked */
772 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
774 gstring gs = { .size = siz, .ptr = 0, .s = buf };
777 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
783 /******************************************************************************/
784 /* Growable-string functions */
786 /* Create a growable-string with some preassigned space */
788 #define string_get_tainted(size, tainted) \
789 string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
791 static inline gstring *
792 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
794 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
801 #define string_get(size) \
802 string_get_trc((size), __FUNCTION__, __LINE__)
804 static inline gstring *
805 string_get_trc(unsigned size, const char * func, unsigned line)
807 return string_get_tainted_trc(size, FALSE, func, line);
810 /* NUL-terminate the C string in the growable-string, and return it. */
812 static inline uschar *
813 string_from_gstring(gstring * g)
821 #define gstring_release_unused(g) \
822 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
825 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
827 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
831 /* sprintf-append to a growable-string */
833 #define string_fmt_append(g, fmt, ...) \
834 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
835 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
837 #define string_fmt_append_f(g, flgs, fmt, ...) \
838 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
839 flgs, fmt, __VA_ARGS__)
841 static inline gstring *
842 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
843 unsigned flags, const char *format, ...)
846 va_start(ap, format);
847 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
853 /******************************************************************************/
854 #endif /* !MACRO_PREDEF */
856 #endif /* _FUNCTIONS_H_ */
860 /* End of functions.h */