1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
7 /* See the file NOTICE for conditions of use and distribution. */
8 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 /* Prototypes for functions that appear in various modules. Gathered together
12 to avoid having a lot of tiddly little headers with only a couple of lines in
13 them. However, some functions that are used (or not used) by utility programs
14 are in in fact in separate headers. */
23 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
24 uschar **) WARN_UNUSED_RESULT;
25 extern void cleanup_perl(void);
26 extern uschar *init_perl(uschar *);
32 std_dh_prime_default(void);
34 std_dh_prime_named(const uschar *);
36 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
37 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
38 extern uschar * tls_cert_issuer(void *, uschar * mod);
39 extern uschar * tls_cert_not_before(void *, uschar * mod);
40 extern uschar * tls_cert_not_after(void *, uschar * mod);
41 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
42 extern uschar * tls_cert_serial_number(void *, uschar * mod);
43 extern uschar * tls_cert_signature(void *, uschar * mod);
44 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
45 extern uschar * tls_cert_subject(void *, uschar * mod);
46 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
47 extern uschar * tls_cert_version(void *, uschar * mod);
49 extern uschar * tls_cert_der_b64(void * cert);
50 extern uschar * tls_cert_fprt_md5(void *);
51 extern uschar * tls_cert_fprt_sha1(void *);
52 extern uschar * tls_cert_fprt_sha256(void *);
54 extern void tls_clean_env(void);
55 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
56 void *, tls_support *, uschar **);
57 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
58 const uschar *, uschar **);
59 extern void tls_client_creds_reload(BOOL);
61 extern void tls_close(void *, int);
62 extern BOOL tls_could_getc(void);
63 extern void tls_daemon_init(void);
64 extern int tls_daemon_tick(void);
65 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
66 extern BOOL tls_export_cert(uschar *, size_t, void *);
67 extern int tls_feof(void);
68 extern int tls_ferror(void);
69 extern uschar *tls_field_from_dn(uschar *, const uschar *);
70 extern void tls_free_cert(void **);
71 extern int tls_getc(unsigned);
72 extern uschar *tls_getbuf(unsigned *);
73 extern void tls_get_cache(unsigned);
74 extern BOOL tls_hasc(void);
75 extern BOOL tls_import_cert(const uschar *, void **);
76 extern BOOL tls_is_name_for_cert(const uschar *, void *);
78 extern BOOL tls_openssl_options_parse(uschar *, long *);
80 extern int tls_read(void *, uschar *, size_t);
81 extern int tls_server_start(uschar **);
82 extern void tls_shutdown_wr(void *);
83 extern BOOL tls_smtp_buffered(void);
84 extern int tls_ungetc(int);
85 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
86 extern void tls_watch_discard_event(int);
87 extern void tls_watch_invalidate(void);
89 extern int tls_write(void *, const uschar *, size_t, BOOL);
90 extern uschar *tls_validate_require_cipher(void);
91 extern gstring *tls_version_report(gstring *);
94 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
97 #endif /*DISABLE_TLS*/
100 /* Everything else... */
102 extern acl_block *acl_read(uschar *(*)(void), uschar **);
103 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
104 extern uschar *acl_current_verb(void);
105 extern int acl_eval(int, uschar *, uschar **, uschar **);
106 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
108 extern tree_node *acl_var_create(uschar *);
109 extern void acl_var_write(uschar *, uschar *, void *);
110 extern void add_driver_info(driver_info **, const driver_info *, size_t);
113 #ifdef EXPERIMENTAL_ARC
114 # ifdef SUPPORT_DMARC
115 extern gstring *arc_dmarc_hist_append(gstring *);
117 extern void *arc_ams_setup_sign_bodyhash(void);
118 extern const uschar *arc_header_feed(gstring *, BOOL);
119 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
120 extern void arc_sign_init(void);
121 extern const uschar *acl_verify_arc(void);
122 extern uschar * fn_arc_domains(void);
125 extern void assert_no_variables(void *, int, const char *, int);
126 extern int auth_call_pam(const uschar *, uschar **);
127 extern int auth_call_pwcheck(uschar *, uschar **);
128 extern int auth_call_radius(const uschar *, uschar **);
129 extern int auth_call_saslauthd(const uschar *, const uschar *,
130 const uschar *, const uschar *, uschar **);
131 extern int auth_check_serv_cond(auth_instance *);
132 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
133 extern int auth_client_item(void *, auth_instance *, const uschar **,
134 unsigned, int, uschar *, int);
137 extern int auth_get_data(uschar **, const uschar *, int);
138 extern int auth_get_no64_data(uschar **, uschar *);
139 extern int auth_prompt(const uschar *);
140 extern int auth_read_input(const uschar *);
141 extern gstring * auth_show_supported(gstring *);
142 extern uschar *authenticator_current_name(void);
144 #ifdef EXPERIMENTAL_ARC
145 extern gstring *authres_arc(gstring *);
148 extern gstring *authres_dkim(gstring *);
150 extern gstring *authres_smtpauth(gstring *);
152 extern uschar *b64encode(const uschar *, int);
153 extern uschar *b64encode_taint(const uschar *, int, const void *);
154 extern int b64decode(const uschar *, uschar **, const void *);
155 extern int bdat_getc(unsigned);
156 extern uschar *bdat_getbuf(unsigned *);
157 extern BOOL bdat_hasc(void);
158 extern int bdat_ungetc(int);
159 extern void bdat_flush_data(void);
161 extern void bits_clear(unsigned int *, size_t, int *);
162 extern void bits_set(unsigned int *, size_t, int *);
164 extern void cancel_cutthrough_connection(BOOL, const uschar *);
165 extern gstring *cat_file(FILE *, gstring *, uschar *);
166 extern gstring *cat_file_tls(void *, gstring *, uschar *);
167 extern int check_host(void *, const uschar *, const uschar **, uschar **);
168 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
169 extern pid_t child_open_exim_function(int *, const uschar *);
170 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
172 extern pid_t child_open_function(uschar **, uschar **, int,
173 int *, int *, BOOL, const uschar *);
174 extern pid_t child_open_uid(const uschar **, const uschar **, int,
175 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
176 extern BOOL cleanup_environment(void);
177 extern void cutthrough_data_puts(uschar *, int);
178 extern void cutthrough_data_put_nl(void);
179 extern uschar *cutthrough_finaldot(void);
180 extern BOOL cutthrough_flush_send(void);
181 extern BOOL cutthrough_headers_send(void);
182 extern BOOL cutthrough_predata(void);
183 extern void release_cutthrough_connection(const uschar *);
185 extern void daemon_go(void);
186 #ifndef COMPILE_UTILITY
187 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
188 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
191 #ifdef EXPERIMENTAL_DCC
192 extern int dcc_process(uschar **);
195 extern void debug_logging_activate(const uschar *, const uschar *);
196 extern void debug_logging_from_spool(const uschar *);
197 extern void debug_logging_stop(BOOL);
198 extern void debug_print_argv(const uschar **);
199 extern void debug_print_ids(uschar *);
200 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
201 extern void debug_print_string(uschar *);
202 extern void debug_print_tree(const char *, tree_node *);
203 extern void debug_vprintf(int, const char *, va_list);
204 extern void debug_pretrigger_setup(const uschar *);
205 extern void debug_pretrigger_discard(void);
206 extern void debug_print_socket(int);
207 extern void debug_trigger_fire(void);
209 extern void decode_bits(unsigned int *, size_t, int *,
210 const uschar *, bit_table *, int, uschar *, int);
211 extern void delete_pid_file(void);
212 extern void deliver_local(address_item *, BOOL);
213 extern address_item *deliver_make_addr(const uschar *, BOOL);
214 extern void delivery_log(int, address_item *, int, uschar *);
215 extern int deliver_message(const uschar *, BOOL, BOOL);
216 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
217 extern void deliver_set_expansions(address_item *);
218 extern int deliver_split_address(address_item *);
219 extern void deliver_succeeded(address_item *);
221 extern void delivery_re_exec(int);
223 extern void die_tainted(const uschar *, const uschar *, int);
224 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
226 extern uschar *dkim_exim_query_dns_txt(const uschar *);
227 extern void dkim_exim_sign_init(void);
229 extern BOOL dkim_transport_write_message(transport_ctx *,
230 struct ob_dkim *, const uschar ** errstr);
232 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
233 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
234 extern uschar *dns_build_reverse(const uschar *);
235 extern time_t dns_expire_from_soa(dns_answer *, int);
236 extern void dns_init(BOOL, BOOL, BOOL);
237 extern BOOL dns_is_aa(const dns_answer *);
238 extern BOOL dns_is_secure(const dns_answer *);
239 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
240 extern void dns_pattern_init(void);
241 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
242 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
243 extern uschar *dns_text_type(int);
244 extern void dscp_list_to_stream(FILE *);
245 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
247 extern void enq_end(uschar *);
248 extern BOOL enq_start(uschar *, unsigned);
249 #ifndef DISABLE_EVENT
250 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
251 extern void msg_event_raise(const uschar *, const address_item *);
254 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
255 extern const uschar * exim_errstr(int);
256 extern void exim_exit(int) NORETURN;
257 extern void exim_gettime(struct timeval *);
258 extern void exim_nullstd(void);
259 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
260 extern void exim_underbar_exit(int) NORETURN;
261 extern void exim_wait_tick(struct timeval *, int);
262 extern int exp_bool(address_item *,
263 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
264 const uschar *, BOOL *);
265 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
266 extern uschar *expand_file_big_buffer(const uschar *);
267 extern uschar *expand_string(uschar *); /* public, cannot make const */
268 extern const uschar *expand_string_2(const uschar *, BOOL *);
269 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
270 extern uschar *expand_getkeyed(const uschar *, const uschar *);
272 extern uschar *expand_hide_passwords(uschar * );
273 extern uschar *expand_string_copy(const uschar *);
274 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
275 extern void modify_variable(uschar *, void *);
277 extern BOOL fd_ready(int, time_t);
279 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
280 extern BOOL filter_personal(string_item *, BOOL);
281 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
282 extern BOOL filter_system_interpret(address_item **, uschar **);
284 extern uschar * fn_hdrs_added(void);
285 extern void force_fd(int, int);
287 extern void header_add(int, const char *, ...);
288 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
289 extern int header_checkname(header_line *, BOOL);
290 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
291 extern int host_address_extract_port(uschar *);
292 extern uschar *host_and_ident(BOOL);
293 extern int host_aton(const uschar *, int *);
294 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
295 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
296 extern void host_build_log_info(void);
297 extern void host_build_sender_fullhost(void);
298 extern int host_find_byname(host_item *, const uschar *, int,
299 const uschar **, BOOL);
300 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
301 uschar *, const dnssec_domains *, const uschar **, BOOL *);
302 extern ip_address_item *host_find_interfaces(void);
303 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
304 extern BOOL host_is_tls_on_connect_port(int);
305 extern int host_item_get_port(host_item *);
306 extern void host_mask(int, int *, int);
307 extern int host_name_lookup(void);
308 extern int host_nmtoa(int, const int *, int, uschar *, int);
309 extern uschar *host_ntoa(int, const void *, uschar *, int *);
310 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
312 extern uschar *imap_utf7_encode(uschar *, const uschar *,
313 uschar, uschar *, uschar **);
315 extern void invert_address(uschar *, uschar *);
316 extern int ip_addr(void *, int, const uschar *, int);
317 extern int ip_bind(int, int, uschar *, int);
318 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
319 extern int ip_connectedsocket(int, const uschar *, int, int,
320 int, host_item *, uschar **, const blob *);
321 extern int ip_get_address_family(int);
322 extern void ip_keepalive(int, const uschar *, BOOL);
323 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
324 extern int ip_socket(int, int);
326 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
327 extern int ip_unixsocket(const uschar *, uschar **);
328 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
330 extern int ipv6_nmtoa(int *, uschar *);
332 extern const uschar *local_part_quote(const uschar *);
333 extern int log_open_as_exim(const uschar * const);
334 extern void log_close_all(void);
335 extern const lookup_info * lookup_with_acq_num(unsigned);
336 #ifdef LOOKUP_MODULE_DIR
337 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
341 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
342 extern BOOL macro_read_assignment(uschar *);
343 extern uschar *macros_expand(int, int *, BOOL *);
344 extern void mainlog_close(void);
345 #ifdef WITH_CONTENT_SCAN
346 extern int malware(const uschar *, BOOL, int);
347 extern int malware_in_file(const uschar *);
348 extern void malware_init(void);
349 extern gstring * malware_show_supported(gstring *);
351 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
352 unsigned int *, int, int, const uschar **);
353 extern int match_address_list_basic(const uschar *, const uschar **, int);
354 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
355 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
356 const uschar *, const uschar **);
357 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
358 unsigned int *, int, BOOL, const uschar **);
359 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
362 extern void message_start(void);
363 extern void message_tidyup(void);
364 extern void md5_end(md5 *, const uschar *, int, uschar *);
365 extern void md5_mid(md5 *, const uschar *);
366 extern void md5_start(md5 *);
367 extern void millisleep(int);
368 #ifdef WITH_CONTENT_SCAN
369 struct mime_boundary_context;
370 extern int mime_acl_check(uschar *acl, FILE *f,
371 struct mime_boundary_context *, uschar **, uschar **);
372 extern int mime_decode(const uschar **);
373 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
374 extern int mime_regex(const uschar **, BOOL);
375 extern void mime_set_anomaly(int);
378 extern int misc_mod_conn_init(const uschar *, const uschar *);
379 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
380 extern misc_module_info * misc_mod_findonly(const uschar * modname);
381 extern int misc_mod_msg_init(void);
382 extern void misc_mod_smtp_reset(void);
384 extern uschar *moan_check_errorcopy(const uschar *);
385 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
387 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
388 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
389 header_line *, FILE *, uschar *);
390 extern void moan_tell_someone(uschar *, address_item *,
391 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
392 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
393 extern void moan_write_from(FILE *);
394 extern void moan_write_references(FILE *, uschar *);
395 #ifdef LOOKUP_MODULE_DIR
396 //extern void mod_load_check(const uschar *);
398 extern FILE *modefopen(const uschar *, const char *, mode_t);
400 extern int open_cutthrough_connection( address_item * addr );
402 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
404 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
405 const uschar *, const uschar *, error_block **);
406 extern uschar *parse_find_address_end(const uschar *, BOOL);
407 extern const uschar *parse_find_at(const uschar *);
408 extern const uschar *parse_fix_phrase(const uschar *, int);
409 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
410 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
412 extern const uschar *parse_date_time(const uschar *str, time_t *t);
413 extern void priv_drop_temp(const uid_t, const gid_t);
414 extern void priv_restore(void);
416 extern BOOL proxy_protocol_host(void);
417 extern void proxy_protocol_setup(void);
420 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
421 extern void queue_check_only(void);
422 extern unsigned queue_count(void);
423 extern unsigned queue_count_cached(void);
424 extern void queue_list(int, const uschar **, int);
425 #ifndef DISABLE_QUEUE_RAMP
426 extern void queue_notify_daemon(const uschar * hostname);
428 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
430 extern int random_number(int);
431 extern const uschar *rc_to_string(int);
432 extern int rda_interpret(redirect_block *, int, const uschar *,
433 const sieve_block *, const ugid_block *, address_item **,
434 uschar **, error_block **, int *, const uschar *);
435 extern int rda_is_filter(const uschar *);
436 extern BOOL readconf_depends(driver_instance *, uschar *);
437 extern void readconf_driver_init(driver_instance **, driver_info **, int,
438 void *, int, optionlist *, int, const uschar *);
439 extern const uschar *readconf_find_option(void *);
440 extern void readconf_main(BOOL);
441 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
442 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
443 extern uschar *readconf_printtime(int);
444 extern const uschar *readconf_readname(uschar *, int, const uschar *);
445 extern int readconf_readtime(const uschar *, int, BOOL);
446 extern void readconf_rest(void);
447 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
448 extern void readconf_save_config(const uschar *);
449 extern void read_message_body(BOOL);
450 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
451 extern BOOL receive_check_fs(int);
452 extern BOOL receive_check_set_sender(const uschar *);
453 extern BOOL receive_msg(BOOL);
454 extern int_eximarith_t receive_statvfs(BOOL, int *);
455 extern void receive_swallow_smtp(void);
456 extern int recv_fd_from_sock(int);
457 #ifdef WITH_CONTENT_SCAN
458 extern int regex(const uschar **, BOOL);
459 extern void regex_vars_clear(void);
461 extern void regex_at_daemon(const uschar *);
462 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
463 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
464 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
465 pcre2_compile_context *);
466 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
468 extern void retry_add_item(address_item *, const uschar *, int);
469 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
470 const uschar **, const uschar **);
471 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
472 extern const uschar *retry_host_key_build(const host_item *, BOOL,
474 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
475 dbdata_retry *, time_t);
476 extern void retry_update(address_item **, address_item **, address_item **);
477 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
478 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
479 extern header_line *rewrite_header(header_line *,
480 const uschar *, const uschar *,
481 rewrite_rule *, int, BOOL);
482 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
484 extern void rewrite_test(const uschar *);
485 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
487 extern int route_address(address_item *, address_item **, address_item **,
488 address_item **, address_item **, int);
489 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
490 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
491 extern BOOL route_findgroup(uschar *, gid_t *);
492 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
493 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
495 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
496 struct passwd **, uid_t *, uschar **);
497 extern void route_init(void);
498 extern gstring * route_show_supported(gstring *);
499 extern void route_tidyup(void);
500 extern uschar *router_current_name(void);
502 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
504 extern uschar *search_find(void *, const uschar *, const uschar *, int,
505 const uschar *, int, int, int *, const uschar *);
506 extern const lookup_info * search_findtype(const uschar *, int);
507 extern const lookup_info * search_findtype_partial(const uschar *, int *,
508 const uschar **, int *, int *, const uschar **);
509 extern void *search_open(const uschar *, const lookup_info *, int,
511 extern void search_tidyup(void);
512 extern BOOL send_fd_over_socket(int, int);
513 extern uschar *sender_helo_verified_boolstr(void);
514 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
515 extern void sha1_end(hctx *, const uschar *, int, uschar *);
516 extern void sha1_mid(hctx *, const uschar *);
517 extern void sha1_start(hctx *);
518 extern int sieve_interpret(const uschar *, int, const sieve_block *,
519 address_item **, uschar **);
520 extern void sigalrm_handler(int);
521 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
522 extern int smtp_boundsock(smtp_connect_args *);
523 extern void smtp_closedown(uschar *);
524 extern void smtp_command_timeout_exit(void) NORETURN;
525 extern void smtp_command_sigterm_exit(void) NORETURN;
526 extern void smtp_data_timeout_exit(void) NORETURN;
527 extern void smtp_data_sigint_exit(void) NORETURN;
528 extern void smtp_deliver_init(void);
529 extern uschar *smtp_cmd_hist(void);
530 extern int smtp_connect(smtp_connect_args *, const blob *);
531 extern int smtp_feof(void);
532 extern int smtp_ferror(void);
533 extern uschar *smtp_get_connection_info(void);
534 extern BOOL smtp_get_interface(uschar *, int, address_item *,
535 uschar **, uschar *);
536 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
537 extern int smtp_getc(unsigned);
538 extern uschar *smtp_getbuf(unsigned *);
539 extern void smtp_get_cache(unsigned);
540 extern BOOL smtp_hasc(void);
541 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
542 extern void smtp_log_no_mail(void);
543 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
544 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
545 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
546 extern void *smtp_reset(void *);
547 extern void smtp_respond(uschar *, int, BOOL, uschar *);
548 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
549 extern void smtp_port_for_connect(host_item *, int);
550 extern void smtp_send_prohibition_message(int, uschar *);
551 extern int smtp_setup_msg(void);
552 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
553 extern BOOL smtp_start_session(void);
554 extern int smtp_ungetc(int);
555 extern BOOL smtp_verify_helo(void);
556 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
557 #ifdef WITH_CONTENT_SCAN
558 extern int spam(const uschar **);
559 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
561 extern void spool_clear_header_globals(void);
562 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
563 extern int spool_open_datafile(const uschar *);
564 extern int spool_open_temp(uschar *);
565 extern int spool_read_header(uschar *, BOOL, BOOL);
566 extern uschar *spool_sender_from_msgid(const uschar *);
567 extern int spool_write_header(const uschar *, int, uschar **);
568 extern int stdin_getc(unsigned);
569 extern int stdin_feof(void);
570 extern int stdin_ferror(void);
571 extern BOOL stdin_hasc(void);
572 extern int stdin_ungetc(int);
574 extern void stackdump(void);
575 extern void store_exit(void);
576 extern void store_init(void);
577 extern void store_writeprotect(int);
579 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
580 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
581 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
582 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
583 extern uschar *string_base62_32(unsigned long int);
584 extern uschar *string_base62_64(unsigned long int);
585 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
586 extern int string_compare_by_pointer(const void *, const void *);
587 extern uschar *string_copy_dnsdomain(uschar *);
588 extern uschar *string_copy_malloc(const uschar *);
589 extern uschar *string_dequote(const uschar **);
590 extern uschar *string_format_size(int, uschar *);
591 extern int string_interpret_escape(const uschar **);
592 extern int string_is_ip_address(const uschar *, int *);
593 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
595 extern BOOL string_is_utf8(const uschar *);
597 extern const uschar *string_printing2(const uschar *, int);
598 extern uschar *string_split_message(uschar *);
599 extern uschar *string_unprinting(uschar *);
601 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
602 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
603 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
604 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
605 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
608 #define string_format(buf, siz, fmt, ...) \
609 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
610 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
611 const char *, ...) ALMOST_PRINTF(5,6);
613 #define string_vformat(g, flgs, fmt, ap) \
614 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
615 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
616 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
617 unsigned, unsigned, const char *, va_list);
619 #define string_open_failed(fmt, ...) \
620 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
621 extern uschar *string_open_failed_trc(const uschar *, unsigned,
622 const char *, ...) PRINTF_FUNCTION(3,4);
624 #define string_nextinlist(lp, sp, b, l) \
625 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
626 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
627 const uschar * func, int line);
629 extern int strcmpic(const uschar *, const uschar *);
630 extern int strncmpic(const uschar *, const uschar *, int);
631 extern uschar *strstric(uschar *, uschar *, BOOL);
632 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
634 extern int test_harness_fudged_queue_time(int);
635 extern void tcp_init(void);
636 #ifdef EXIM_TFO_PROBE
637 extern void tfo_probe(void);
639 extern void tls_modify_variables(tls_support *);
640 extern uschar *tod_stamp(int);
642 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
644 extern uschar *transport_current_name(void);
645 extern void transport_do_pass_socket(const uschar *, const uschar *,
646 const uschar *, uschar *, int);
647 extern void transport_init(void);
648 extern const uschar *transport_rcpt_address(address_item *, BOOL);
649 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
650 unsigned, int, address_item *, const uschar *, uschar **);
651 extern void transport_update_waiting(host_item *, const uschar *);
652 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
653 extern void transport_write_reset(int);
654 extern BOOL transport_write_string(int, const char *, ...);
655 extern BOOL transport_headers_send(transport_ctx *,
656 BOOL (*)(transport_ctx *, const uschar *, int));
657 extern gstring * transport_show_supported(gstring *);
658 extern BOOL transport_write_message(transport_ctx *, int);
659 extern void tree_add_duplicate(const uschar *, address_item *);
660 extern void tree_add_nonrecipient(const uschar *);
661 extern void tree_add_unusable(const host_item *);
662 extern void tree_dup(tree_node **, tree_node *);
663 extern int tree_insertnode(tree_node **, tree_node *);
664 extern tree_node *tree_search(tree_node *, const uschar *);
665 extern void tree_write(tree_node *, FILE *);
666 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
668 #ifdef WITH_CONTENT_SCAN
669 extern void unspool_mbox(void);
672 extern gstring *utf8_version_report(gstring *);
675 extern int vaguely_random_number(int);
677 extern int vaguely_random_number_fallback(int);
679 extern int verify_address(address_item *, FILE *, int, int, int, int,
680 uschar *, uschar *, BOOL *);
681 extern int verify_check_dnsbl(int, const uschar **, uschar **);
682 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
683 uschar *, uschar *, int, int *);
684 extern int verify_check_headers(uschar **);
685 extern int verify_check_header_names_ascii(uschar **);
686 extern int verify_check_host(uschar **);
687 extern int verify_check_notblind(BOOL);
688 extern int verify_check_given_host(const uschar **, const host_item *);
689 extern int verify_check_this_host(const uschar **, unsigned int *,
690 const uschar*, const uschar *, const uschar **);
691 extern address_item *verify_checked_sender(const uschar *);
692 extern void verify_get_ident(int);
693 extern void verify_quota(uschar *);
694 extern int verify_quota_call(const uschar *, int, int, uschar **);
695 extern BOOL verify_sender(int *, uschar **);
696 extern BOOL verify_sender_preliminary(int *, uschar **);
697 extern void version_init(void);
699 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
700 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
701 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
703 #ifdef EXPERIMENTAL_XCLIENT
704 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
705 extern gstring * xclient_smtp_advertise_str(gstring *);
707 extern uschar *xtextencode(uschar *, int);
708 extern int xtextdecode(uschar *, uschar **);
711 /******************************************************************************/
712 /* Predicate: if an address is in a tainted pool.
713 By extension, a variable pointing to this address is tainted.
717 is_tainted(const void * p)
719 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
723 extern BOOL is_tainted_fn(const void *);
724 return is_tainted_fn(p);
729 is_incompatible(const void * old, const void * new)
731 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
735 extern BOOL is_incompatible_fn(const void *, const void *);
736 return is_incompatible_fn(old, new);
740 /******************************************************************************/
741 /* String functions */
742 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
744 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
745 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
747 return US strcat(CS dst, CCS src);
749 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
751 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
752 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
754 return US strcpy(CS dst, CCS src);
756 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
758 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
759 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
761 return US strncat(CS dst, CCS src, n);
763 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
765 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
766 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
768 return US strncpy(CS dst, CCS src, n);
770 /*XXX will likely need unchecked copy also */
773 /* Advance the string pointer given over any whitespace.
774 Return the next char as there's enough places using it to be useful. */
776 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
778 static inline uschar skip_whitespace(const uschar ** sp)
779 { while (isspace(**sp)) (*sp)++; return **sp; }
781 /* Ditto, non-whitespace */
783 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
784 static inline uschar skip_nonwhite(const uschar ** sp)
785 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
788 /******************************************************************************/
790 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
791 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
792 chown(<exim-uid>, <exim-gid>).
794 Probably because the idmapping is broken, misconfigured or set up in
795 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
796 case of misconfiguration, or if there are more such broken systems
797 out, I try to impose as least impact as possible and for now just write
798 a panic log entry pointing to the bug report. You're encouraged to
799 contact the developers, if you experience this issue.
801 fd the file descriptor (or -1 if not valid)
802 name the file name for error messages or for file operations,
807 returns 0 on success, -1 on failure */
810 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
812 return fchown(fd, owner, group)
813 ? exim_chown_failure(fd, name, owner, group) : 0;
817 exim_chown(const uschar *name, uid_t owner, gid_t group)
819 return chown(CCS name, owner, group)
820 ? exim_chown_failure(-1, name, owner, group) : 0;
822 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
824 /******************************************************************************/
825 /* String functions */
827 #if !defined(MACRO_PREDEF)
828 /*************************************************
829 * Copy and save string *
830 *************************************************/
832 /* This function assumes that memcpy() is faster than strcpy().
833 The result is explicitly nul-terminated.
836 static inline uschar *
837 string_copyn_taint_trc(const uschar * s, unsigned len,
838 const void * proto_mem, const char * func, int line)
841 unsigned slen = Ustrlen(s);
842 if (len > slen) len = slen;
843 ss = store_get_3(len + 1, proto_mem, func, line);
849 static inline uschar *
850 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
851 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
853 static inline uschar *
854 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
855 { return string_copyn_taint_trc(s, len, s, func, line); }
856 static inline uschar *
857 string_copy_trc(const uschar * s, const char * func, int line)
858 { return string_copy_taint_trc(s, s, func, line); }
861 /* String-copy functions explicitly setting the taint status */
863 #define string_copyn_taint(s, len, proto_mem) \
864 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
865 #define string_copy_taint(s, proto_mem) \
866 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
868 /* Simple string-copy functions maintaining the taint */
870 #define string_copyn(s, len) \
871 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
872 #define string_copy(s) \
873 string_copy_trc((s), __FUNCTION__, __LINE__)
876 /*************************************************
877 * Copy, lowercase and save string *
878 *************************************************/
881 Argument: string to copy
882 Returns: copy of string in new store, with letters lowercased
885 static inline uschar *
886 string_copylc(const uschar * s)
888 uschar * ss = store_get(Ustrlen(s) + 1, s);
890 while (*s) *p++ = tolower(*s++);
897 /*************************************************
898 * Copy, lowercase, and save string, given length *
899 *************************************************/
901 /* It is assumed the data contains no zeros. A zero is added
906 n number of characters
908 Returns: copy of string in new store, with letters lowercased
911 static inline uschar *
912 string_copynlc(uschar * s, int n)
914 uschar * ss = store_get(n + 1, s);
916 while (n-- > 0) *p++ = tolower(*s++);
922 # ifndef COMPILE_UTILITY
923 /*************************************************
924 * Copy and save string in longterm store *
925 *************************************************/
927 /* This function assumes that memcpy() is faster than strcpy().
929 Argument: string to copy
930 Returns: copy of string in new store
933 static inline uschar *
934 string_copy_perm(const uschar *s, BOOL force_taint)
936 int old_pool = store_pool;
937 int len = Ustrlen(s) + 1;
940 store_pool = POOL_PERM;
941 ss = store_get(len, force_taint ? GET_TAINTED : s);
943 store_pool = old_pool;
950 /* sprintf into a buffer, taint-unchecked */
953 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
955 gstring gs = { .size = siz, .ptr = 0, .s = buf };
958 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
964 /******************************************************************************/
965 /* Growable-string functions */
967 /* Create a growable-string with some preassigned space */
969 #define string_get_tainted(size, proto_mem) \
970 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
972 static inline gstring *
973 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
975 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
976 g->size = size; /*XXX would be good if we could see the actual alloc size */
982 #define string_get(size) \
983 string_get_trc((size), __FUNCTION__, __LINE__)
985 static inline gstring *
986 string_get_trc(unsigned size, const char * func, unsigned line)
988 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
991 /* NUL-terminate the C string in the growable-string, and return it. */
993 static inline uschar *
994 string_from_gstring(gstring * g)
1002 len_string_from_gstring(gstring * g, uschar ** sp)
1007 g->s[g->ptr] = '\0';
1017 static inline uschar *
1018 string_copy_from_gstring(gstring * g)
1020 return g ? string_copyn(g->s, g->ptr) : NULL;
1023 static inline unsigned
1024 gstring_length(const gstring * g)
1026 return g ? (unsigned)g->ptr : 0;
1029 static inline uschar
1030 gstring_last_char(gstring * g)
1032 return g->s[g->ptr-1];
1036 gstring_trim(gstring * g, unsigned amount)
1042 gstring_trim_trailing(gstring * g, uschar c)
1044 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1048 gstring_reset(gstring * g)
1054 #define gstring_release_unused(g) \
1055 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1058 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1060 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1064 /* plain string append to a growable-string */
1066 static inline gstring * string_cat(gstring * g, const uschar * s)
1069 static inline gstring *
1070 string_cat(gstring * g, const uschar * s)
1072 return string_catn(g, s, Ustrlen(s));
1076 /* sprintf-append to a growable-string */
1078 #define string_fmt_append(g, fmt, ...) \
1079 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1080 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1082 #define string_fmt_append_f(g, flgs, fmt, ...) \
1083 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1084 flgs, fmt, __VA_ARGS__)
1086 static inline gstring *
1087 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1088 unsigned flags, const char *format, ...)
1091 va_start(ap, format);
1092 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1099 /* Copy the content of a string to tainted memory. The proto_mem arg
1100 will always be tainted, and suitable as a prototype. */
1103 gstring_rebuffer(gstring * g, const void * proto_mem)
1105 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1106 memcpy(s, g->s, g->ptr);
1110 /* Append one gstring to another */
1112 static inline gstring *
1113 gstring_append(gstring * dest, gstring * item)
1115 return string_catn(dest, item->s, item->ptr);
1119 # ifndef COMPILE_UTILITY
1120 /******************************************************************************/
1121 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1122 for them as the strings we proceed to copy from them meant they could not be
1123 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1124 we do have to take care over marking tainted all copied strings. A separate pool
1125 could be used and would handle that implicitly. */
1127 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1129 static inline dns_answer *
1130 store_get_dns_answer_trc(const uschar * func, unsigned line)
1132 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1135 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1138 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1140 store_free_3(dnsa, CCS func, line);
1144 /* Check for an RR being large enough. Return TRUE iff bad. */
1146 rr_bad_size(const dns_record * rr, size_t minbytes)
1148 return rr->size < minbytes;
1151 /* Check for an RR having further data beyond a given pointer.
1152 Return TRUE iff bad. */
1154 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1156 return rr_bad_size(rr, ptr - rr->data + minbytes);
1159 /******************************************************************************/
1160 /* Routines with knowledge of spool layout */
1163 spool_pname_buf(uschar * buf, int len)
1165 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1168 static inline uschar *
1169 spool_dname(const uschar * purpose, uschar * subdir)
1171 return string_sprintf("%s/%s/%s/%s",
1172 spool_directory, queue_name, purpose, subdir);
1176 static inline uschar *
1177 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1179 return string_sprintf("%s%s%s%s%s",
1182 *subdir ? "/" : "", subdir);
1185 static inline uschar *
1186 spool_sname(const uschar * purpose, const uschar * subdir)
1188 return spool_q_sname(purpose, queue_name, subdir);
1191 static inline uschar *
1192 spool_q_fname(const uschar * purpose, const uschar * q,
1193 const uschar * subdir, const uschar * fname, const uschar * suffix)
1195 return string_sprintf("%s/%s/%s/%s/%s%s",
1196 spool_directory, q, purpose, subdir, fname, suffix);
1199 static inline uschar *
1200 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1201 const uschar * suffix)
1203 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1204 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1205 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1206 uschar * buf = store_get(len, GET_UNTAINTED);
1207 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1208 spool_directory, queue_name, purpose, subdir, fname, suffix);
1211 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1216 set_subdir_str(uschar * subdir_str, const uschar * name,
1217 int search_sequence)
1219 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1220 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1221 subdir_str[1] = '\0';
1224 /******************************************************************************/
1225 /* Message-ID format transition knowlege */
1228 is_new_message_id(const uschar * id)
1230 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1234 is_old_message_id(const uschar * id)
1236 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1239 static inline unsigned
1240 spool_data_start_offset(const uschar * id)
1242 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1243 return SPOOL_DATA_START_OFFSET;
1246 /******************************************************************************/
1247 /* Time calculations */
1249 /* Diff two times (later, earlier) returning diff in 1st arg */
1251 timediff(struct timeval * later, const struct timeval * earlier)
1253 later->tv_sec -= earlier->tv_sec;
1254 if ((later->tv_usec -= earlier->tv_usec) < 0)
1257 later->tv_usec += 1000*1000;
1262 timesince(struct timeval * diff, const struct timeval * then)
1264 gettimeofday(diff, NULL);
1265 timediff(diff, then);
1268 static inline uschar *
1269 string_timediff(const struct timeval * diff)
1271 static uschar buf[16];
1273 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1274 return readconf_printtime((int)diff->tv_sec);
1276 snprintf(CS buf, sizeof(buf), "%u.%03us",
1277 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1282 static inline uschar *
1283 string_timesince(const struct timeval * then)
1285 struct timeval diff;
1286 timesince(&diff, then);
1287 return string_timediff(&diff);
1291 report_time_since(const struct timeval * t0, const uschar * where)
1293 # ifdef MEASURE_TIMING
1294 struct timeval diff;
1295 timesince(&diff, t0);
1296 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1297 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1303 testharness_pause_ms(int millisec)
1305 #ifndef MEASURE_TIMING
1306 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1310 /******************************************************************************/
1311 /* Taint-checked file opens */
1314 exim_open2(const char *pathname, int flags)
1316 if (!is_tainted(pathname)) return open(pathname, flags);
1317 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1322 exim_open(const char *pathname, int flags, mode_t mode)
1324 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1325 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1329 #ifdef EXIM_HAVE_OPENAT
1331 exim_openat(int dirfd, const char *pathname, int flags)
1333 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1334 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1339 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1341 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1342 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1348 static inline FILE *
1349 exim_fopen(const char *pathname, const char *mode)
1351 if (!is_tainted(pathname)) return fopen(pathname, mode);
1352 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1358 exim_opendir(const uschar * name)
1360 if (!is_tainted(name)) return opendir(CCS name);
1361 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1366 /******************************************************************************/
1367 # if !defined(COMPILE_UTILITY)
1369 /* We use the PID of the head process for a connection-id. Note that
1370 this is only for tracking a received connection and what it directly
1371 causes; there is no inttent to describe transport-initiated TCP connections.
1372 The value is intented to be a cookie usable for logging, and we might change
1373 the generator for it at any time. */
1376 set_connection_id(void)
1378 connection_id = string_sprintf("%lu", (u_long)getpid());
1382 /* Process manipulation */
1385 exim_fork(const unsigned char * purpose)
1388 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1389 if ((pid = fork()) == 0)
1391 f.daemon_listen = FALSE;
1392 process_purpose = purpose;
1393 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1397 testharness_pause_ms(100); /* let child work */
1398 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1405 child_open_exim(int * fdptr, const uschar * purpose)
1406 { return child_open_exim_function(fdptr, purpose); }
1409 child_open_exim2(int * fdptr, uschar * sender,
1410 uschar * sender_auth, const uschar * purpose)
1411 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1414 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1415 int *outfdptr, BOOL make_leader, const uschar * purpose)
1416 { return child_open_function(argv, envp, newumask, infdptr,
1417 outfdptr, make_leader, purpose);
1420 /* Return 1 if fd is usable per pollbits, else 0 */
1422 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1424 struct pollfd p = {.fd = fd, .events = pollbits};
1425 return poll(&p, 1, tmo_millisec);
1428 /******************************************************************************/
1429 /* Client-side smtp log string, for debug */
1432 smtp_debug_cmd_log_init(void)
1434 # ifndef DISABLE_CLIENT_CMD_LOG
1435 int old_pool = store_pool;
1436 store_pool = POOL_PERM;
1437 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1438 *client_cmd_log->s = '\0';
1439 store_pool = old_pool;
1445 smtp_debug_cmd(const uschar * buf, int mode)
1447 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1448 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1450 # ifndef DISABLE_CLIENT_CMD_LOG
1452 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1453 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1454 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1455 if (mode == SCMD_BUFFER)
1456 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1457 else if (mode == SCMD_MORE)
1458 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1459 store_pool = old_pool;
1465 /* This might be called both due to callout and then from delivery.
1466 Use memory that will not be released between those phases.
1469 smtp_debug_resp(const uschar * buf)
1471 # ifndef DISABLE_CLIENT_CMD_LOG
1472 int old_pool = store_pool;
1473 store_pool = POOL_PERM;
1474 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1475 buf[3] == '-' ? 4 : 3);
1476 store_pool = old_pool;
1482 smtp_debug_cmd_report(void)
1484 # ifndef DISABLE_CLIENT_CMD_LOG
1485 if (client_cmd_log && *client_cmd_log->s)
1487 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1488 gstring_reset(client_cmd_log);
1491 debug_printf("cmdlog: (unset)\n");
1498 expand_max_rcpt(const uschar * str_max_rcpt)
1500 const uschar * s = expand_cstring(str_max_rcpt);
1502 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1505 /******************************************************************************/
1506 /* Queue-runner operations */
1509 is_onetime_qrun(void)
1511 return qrunners && !qrunners->next && qrunners->interval == 0;
1515 is_multiple_qrun(void)
1517 return qrunners && (qrunners->interval > 0 || qrunners->next);
1521 # endif /* !COMPILE_UTILITY */
1523 /******************************************************************************/
1524 #endif /* !MACRO_PREDEF */
1526 #endif /* _FUNCTIONS_H_ */
1530 /* End of functions.h */