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 *);
151 extern gstring *authres_dmarc(gstring *);
153 extern gstring *authres_smtpauth(gstring *);
155 extern gstring *authres_spf(gstring *);
158 extern uschar *b64encode(const uschar *, int);
159 extern uschar *b64encode_taint(const uschar *, int, const void *);
160 extern int b64decode(const uschar *, uschar **, const void *);
161 extern int bdat_getc(unsigned);
162 extern uschar *bdat_getbuf(unsigned *);
163 extern BOOL bdat_hasc(void);
164 extern int bdat_ungetc(int);
165 extern void bdat_flush_data(void);
167 extern void bits_clear(unsigned int *, size_t, int *);
168 extern void bits_set(unsigned int *, size_t, int *);
170 extern void cancel_cutthrough_connection(BOOL, const uschar *);
171 extern gstring *cat_file(FILE *, gstring *, uschar *);
172 extern gstring *cat_file_tls(void *, gstring *, uschar *);
173 extern int check_host(void *, const uschar *, const uschar **, uschar **);
174 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
175 extern pid_t child_open_exim_function(int *, const uschar *);
176 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
178 extern pid_t child_open_function(uschar **, uschar **, int,
179 int *, int *, BOOL, const uschar *);
180 extern pid_t child_open_uid(const uschar **, const uschar **, int,
181 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
182 extern BOOL cleanup_environment(void);
183 extern void cutthrough_data_puts(uschar *, int);
184 extern void cutthrough_data_put_nl(void);
185 extern uschar *cutthrough_finaldot(void);
186 extern BOOL cutthrough_flush_send(void);
187 extern BOOL cutthrough_headers_send(void);
188 extern BOOL cutthrough_predata(void);
189 extern void release_cutthrough_connection(const uschar *);
191 extern void daemon_go(void);
192 #ifndef COMPILE_UTILITY
193 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
194 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
197 #ifdef EXPERIMENTAL_DCC
198 extern int dcc_process(uschar **);
201 extern void debug_logging_activate(const uschar *, const uschar *);
202 extern void debug_logging_from_spool(const uschar *);
203 extern void debug_logging_stop(BOOL);
204 extern void debug_print_argv(const uschar **);
205 extern void debug_print_ids(uschar *);
206 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
207 extern void debug_print_string(uschar *);
208 extern void debug_print_tree(const char *, tree_node *);
209 extern void debug_vprintf(int, const char *, va_list);
210 extern void debug_pretrigger_setup(const uschar *);
211 extern void debug_pretrigger_discard(void);
212 extern void debug_print_socket(int);
213 extern void debug_trigger_fire(void);
215 extern void decode_bits(unsigned int *, size_t, int *,
216 const uschar *, bit_table *, int, uschar *, int);
217 extern void delete_pid_file(void);
218 extern void deliver_local(address_item *, BOOL);
219 extern address_item *deliver_make_addr(const uschar *, BOOL);
220 extern void delivery_log(int, address_item *, int, uschar *);
221 extern int deliver_message(const uschar *, BOOL, BOOL);
222 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
223 extern void deliver_set_expansions(address_item *);
224 extern int deliver_split_address(address_item *);
225 extern void deliver_succeeded(address_item *);
227 extern void delivery_re_exec(int);
229 extern void die_tainted(const uschar *, const uschar *, int);
230 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
232 extern uschar *dkim_exim_query_dns_txt(const uschar *);
233 extern void dkim_exim_sign_init(void);
235 extern BOOL dkim_transport_write_message(transport_ctx *,
236 struct ob_dkim *, const uschar ** errstr);
238 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
239 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
240 extern uschar *dns_build_reverse(const uschar *);
241 extern time_t dns_expire_from_soa(dns_answer *, int);
242 extern void dns_init(BOOL, BOOL, BOOL);
243 extern BOOL dns_is_aa(const dns_answer *);
244 extern BOOL dns_is_secure(const dns_answer *);
245 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
246 extern void dns_pattern_init(void);
247 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
248 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
249 extern uschar *dns_text_type(int);
250 extern void dscp_list_to_stream(FILE *);
251 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
253 extern void enq_end(uschar *);
254 extern BOOL enq_start(uschar *, unsigned);
255 #ifndef DISABLE_EVENT
256 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
257 extern void msg_event_raise(const uschar *, const address_item *);
260 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
261 extern const uschar * exim_errstr(int);
262 extern void exim_exit(int) NORETURN;
263 extern void exim_gettime(struct timeval *);
264 extern void exim_nullstd(void);
265 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
266 extern void exim_underbar_exit(int) NORETURN;
267 extern void exim_wait_tick(struct timeval *, int);
268 extern int exp_bool(address_item *,
269 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
270 const uschar *, BOOL *);
271 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
272 extern uschar *expand_file_big_buffer(const uschar *);
273 extern uschar *expand_string(uschar *); /* public, cannot make const */
274 extern const uschar *expand_string_2(const uschar *, BOOL *);
275 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
276 extern uschar *expand_getkeyed(const uschar *, const uschar *);
278 extern uschar *expand_hide_passwords(uschar * );
279 extern uschar *expand_string_copy(const uschar *);
280 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
281 extern void modify_variable(uschar *, void *);
283 extern BOOL fd_ready(int, time_t);
285 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
286 extern BOOL filter_personal(string_item *, BOOL);
287 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
288 extern BOOL filter_system_interpret(address_item **, uschar **);
290 extern uschar * fn_hdrs_added(void);
291 extern void force_fd(int, int);
293 extern void header_add(int, const char *, ...);
294 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
295 extern int header_checkname(header_line *, BOOL);
296 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
297 extern int host_address_extract_port(uschar *);
298 extern uschar *host_and_ident(BOOL);
299 extern int host_aton(const uschar *, int *);
300 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
301 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
302 extern void host_build_log_info(void);
303 extern void host_build_sender_fullhost(void);
304 extern int host_find_byname(host_item *, const uschar *, int,
305 const uschar **, BOOL);
306 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
307 uschar *, const dnssec_domains *, const uschar **, BOOL *);
308 extern ip_address_item *host_find_interfaces(void);
309 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
310 extern BOOL host_is_tls_on_connect_port(int);
311 extern int host_item_get_port(host_item *);
312 extern void host_mask(int, int *, int);
313 extern int host_name_lookup(void);
314 extern int host_nmtoa(int, const int *, int, uschar *, int);
315 extern uschar *host_ntoa(int, const void *, uschar *, int *);
316 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
318 extern uschar *imap_utf7_encode(uschar *, const uschar *,
319 uschar, uschar *, uschar **);
321 extern void invert_address(uschar *, uschar *);
322 extern int ip_addr(void *, int, const uschar *, int);
323 extern int ip_bind(int, int, uschar *, int);
324 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
325 extern int ip_connectedsocket(int, const uschar *, int, int,
326 int, host_item *, uschar **, const blob *);
327 extern int ip_get_address_family(int);
328 extern void ip_keepalive(int, const uschar *, BOOL);
329 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
330 extern int ip_socket(int, int);
332 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
333 extern int ip_unixsocket(const uschar *, uschar **);
334 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
336 extern int ipv6_nmtoa(int *, uschar *);
338 extern const uschar *local_part_quote(const uschar *);
339 extern int log_open_as_exim(const uschar * const);
340 extern void log_close_all(void);
341 extern const lookup_info * lookup_with_acq_num(unsigned);
342 #ifdef LOOKUP_MODULE_DIR
343 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
347 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
348 extern BOOL macro_read_assignment(uschar *);
349 extern uschar *macros_expand(int, int *, BOOL *);
350 extern void mainlog_close(void);
351 #ifdef WITH_CONTENT_SCAN
352 extern int malware(const uschar *, BOOL, int);
353 extern int malware_in_file(const uschar *);
354 extern void malware_init(void);
355 extern gstring * malware_show_supported(gstring *);
357 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
358 unsigned int *, int, int, const uschar **);
359 extern int match_address_list_basic(const uschar *, const uschar **, int);
360 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
361 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
362 const uschar *, const uschar **);
363 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
364 unsigned int *, int, BOOL, const uschar **);
365 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
368 extern void message_start(void);
369 extern void message_tidyup(void);
370 extern void md5_end(md5 *, const uschar *, int, uschar *);
371 extern void md5_mid(md5 *, const uschar *);
372 extern void md5_start(md5 *);
373 extern void millisleep(int);
374 #ifdef WITH_CONTENT_SCAN
375 struct mime_boundary_context;
376 extern int mime_acl_check(uschar *acl, FILE *f,
377 struct mime_boundary_context *, uschar **, uschar **);
378 extern int mime_decode(const uschar **);
379 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
380 extern int mime_regex(const uschar **, BOOL);
381 extern void mime_set_anomaly(int);
383 extern uschar *moan_check_errorcopy(const uschar *);
384 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
386 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
387 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
388 header_line *, FILE *, uschar *);
389 extern void moan_tell_someone(uschar *, address_item *,
390 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
391 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
392 extern void moan_write_from(FILE *);
393 extern void moan_write_references(FILE *, uschar *);
394 #ifdef LOOKUP_MODULE_DIR
395 //extern void mod_load_check(const uschar *);
397 extern FILE *modefopen(const uschar *, const char *, mode_t);
399 extern int open_cutthrough_connection( address_item * addr );
401 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
403 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
404 const uschar *, const uschar *, error_block **);
405 extern uschar *parse_find_address_end(const uschar *, BOOL);
406 extern const uschar *parse_find_at(const uschar *);
407 extern const uschar *parse_fix_phrase(const uschar *, int);
408 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
409 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
411 extern const uschar *parse_date_time(const uschar *str, time_t *t);
412 extern void priv_drop_temp(const uid_t, const gid_t);
413 extern void priv_restore(void);
415 extern BOOL proxy_protocol_host(void);
416 extern void proxy_protocol_setup(void);
419 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
420 extern void queue_check_only(void);
421 extern unsigned queue_count(void);
422 extern unsigned queue_count_cached(void);
423 extern void queue_list(int, const uschar **, int);
424 #ifndef DISABLE_QUEUE_RAMP
425 extern void queue_notify_daemon(const uschar * hostname);
427 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
429 extern int random_number(int);
430 extern const uschar *rc_to_string(int);
431 extern int rda_interpret(redirect_block *, int, const uschar *,
432 const sieve_block *, const ugid_block *, address_item **,
433 uschar **, error_block **, int *, const uschar *);
434 extern int rda_is_filter(const uschar *);
435 extern BOOL readconf_depends(driver_instance *, uschar *);
436 extern void readconf_driver_init(driver_instance **, driver_info **, int,
437 void *, int, optionlist *, int, const uschar *);
438 extern const uschar *readconf_find_option(void *);
439 extern void readconf_main(BOOL);
440 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
441 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
442 extern uschar *readconf_printtime(int);
443 extern const uschar *readconf_readname(uschar *, int, const uschar *);
444 extern int readconf_readtime(const uschar *, int, BOOL);
445 extern void readconf_rest(void);
446 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
447 extern void readconf_save_config(const uschar *);
448 extern void read_message_body(BOOL);
449 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
450 extern BOOL receive_check_fs(int);
451 extern BOOL receive_check_set_sender(const uschar *);
452 extern BOOL receive_msg(BOOL);
453 extern int_eximarith_t receive_statvfs(BOOL, int *);
454 extern void receive_swallow_smtp(void);
455 extern int recv_fd_from_sock(int);
456 #ifdef WITH_CONTENT_SCAN
457 extern int regex(const uschar **, BOOL);
458 extern void regex_vars_clear(void);
460 extern void regex_at_daemon(const uschar *);
461 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
462 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
463 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
464 pcre2_compile_context *);
465 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
467 extern void retry_add_item(address_item *, const uschar *, int);
468 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
469 const uschar **, const uschar **);
470 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
471 extern const uschar *retry_host_key_build(const host_item *, BOOL,
473 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
474 dbdata_retry *, time_t);
475 extern void retry_update(address_item **, address_item **, address_item **);
476 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
477 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
478 extern header_line *rewrite_header(header_line *,
479 const uschar *, const uschar *,
480 rewrite_rule *, int, BOOL);
481 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
483 extern void rewrite_test(const uschar *);
484 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
486 extern int route_address(address_item *, address_item **, address_item **,
487 address_item **, address_item **, int);
488 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
489 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
490 extern BOOL route_findgroup(uschar *, gid_t *);
491 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
492 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
494 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
495 struct passwd **, uid_t *, uschar **);
496 extern void route_init(void);
497 extern gstring * route_show_supported(gstring *);
498 extern void route_tidyup(void);
499 extern uschar *router_current_name(void);
501 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
503 extern uschar *search_find(void *, const uschar *, const uschar *, int,
504 const uschar *, int, int, int *, const uschar *);
505 extern const lookup_info * search_findtype(const uschar *, int);
506 extern const lookup_info * search_findtype_partial(const uschar *, int *,
507 const uschar **, int *, int *, const uschar **);
508 extern void *search_open(const uschar *, const lookup_info *, int,
510 extern void search_tidyup(void);
511 extern BOOL send_fd_over_socket(int, int);
512 extern uschar *sender_helo_verified_boolstr(void);
513 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
514 extern void sha1_end(hctx *, const uschar *, int, uschar *);
515 extern void sha1_mid(hctx *, const uschar *);
516 extern void sha1_start(hctx *);
517 extern int sieve_interpret(const uschar *, int, const sieve_block *,
518 address_item **, uschar **);
519 extern void sigalrm_handler(int);
520 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
521 extern int smtp_boundsock(smtp_connect_args *);
522 extern void smtp_closedown(uschar *);
523 extern void smtp_command_timeout_exit(void) NORETURN;
524 extern void smtp_command_sigterm_exit(void) NORETURN;
525 extern void smtp_data_timeout_exit(void) NORETURN;
526 extern void smtp_data_sigint_exit(void) NORETURN;
527 extern void smtp_deliver_init(void);
528 extern uschar *smtp_cmd_hist(void);
529 extern int smtp_connect(smtp_connect_args *, const blob *);
530 extern int smtp_feof(void);
531 extern int smtp_ferror(void);
532 extern uschar *smtp_get_connection_info(void);
533 extern BOOL smtp_get_interface(uschar *, int, address_item *,
534 uschar **, uschar *);
535 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
536 extern int smtp_getc(unsigned);
537 extern uschar *smtp_getbuf(unsigned *);
538 extern void smtp_get_cache(unsigned);
539 extern BOOL smtp_hasc(void);
540 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
541 extern void smtp_log_no_mail(void);
542 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
543 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
544 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
545 extern void *smtp_reset(void *);
546 extern void smtp_respond(uschar *, int, BOOL, uschar *);
547 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
548 extern void smtp_port_for_connect(host_item *, int);
549 extern void smtp_send_prohibition_message(int, uschar *);
550 extern int smtp_setup_msg(void);
551 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
552 extern BOOL smtp_start_session(void);
553 extern int smtp_ungetc(int);
554 extern BOOL smtp_verify_helo(void);
555 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
556 #ifdef WITH_CONTENT_SCAN
557 extern int spam(const uschar **);
558 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
560 extern void spool_clear_header_globals(void);
561 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
562 extern int spool_open_datafile(const uschar *);
563 extern int spool_open_temp(uschar *);
564 extern int spool_read_header(uschar *, BOOL, BOOL);
565 extern uschar *spool_sender_from_msgid(const uschar *);
566 extern int spool_write_header(const uschar *, int, uschar **);
567 extern int stdin_getc(unsigned);
568 extern int stdin_feof(void);
569 extern int stdin_ferror(void);
570 extern BOOL stdin_hasc(void);
571 extern int stdin_ungetc(int);
573 extern void stackdump(void);
574 extern void store_exit(void);
575 extern void store_init(void);
576 extern void store_writeprotect(int);
578 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
579 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
580 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
581 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
582 extern uschar *string_base62_32(unsigned long int);
583 extern uschar *string_base62_64(unsigned long int);
584 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
585 extern int string_compare_by_pointer(const void *, const void *);
586 extern uschar *string_copy_dnsdomain(uschar *);
587 extern uschar *string_copy_malloc(const uschar *);
588 extern uschar *string_dequote(const uschar **);
589 extern uschar *string_format_size(int, uschar *);
590 extern int string_interpret_escape(const uschar **);
591 extern int string_is_ip_address(const uschar *, int *);
592 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
594 extern BOOL string_is_utf8(const uschar *);
596 extern const uschar *string_printing2(const uschar *, int);
597 extern uschar *string_split_message(uschar *);
598 extern uschar *string_unprinting(uschar *);
600 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
601 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
602 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
603 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
604 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
607 #define string_format(buf, siz, fmt, ...) \
608 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
609 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
610 const char *, ...) ALMOST_PRINTF(5,6);
612 #define string_vformat(g, flgs, fmt, ap) \
613 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
614 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
615 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
616 unsigned, unsigned, const char *, va_list);
618 #define string_open_failed(fmt, ...) \
619 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
620 extern uschar *string_open_failed_trc(const uschar *, unsigned,
621 const char *, ...) PRINTF_FUNCTION(3,4);
623 #define string_nextinlist(lp, sp, b, l) \
624 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
625 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
626 const uschar * func, int line);
628 extern int strcmpic(const uschar *, const uschar *);
629 extern int strncmpic(const uschar *, const uschar *, int);
630 extern uschar *strstric(uschar *, uschar *, BOOL);
631 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
633 extern int test_harness_fudged_queue_time(int);
634 extern void tcp_init(void);
635 #ifdef EXIM_TFO_PROBE
636 extern void tfo_probe(void);
638 extern void tls_modify_variables(tls_support *);
639 extern uschar *tod_stamp(int);
641 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
643 extern uschar *transport_current_name(void);
644 extern void transport_do_pass_socket(const uschar *, const uschar *,
645 const uschar *, uschar *, int);
646 extern void transport_init(void);
647 extern const uschar *transport_rcpt_address(address_item *, BOOL);
648 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
649 unsigned, int, address_item *, const uschar *, uschar **);
650 extern void transport_update_waiting(host_item *, const uschar *);
651 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
652 extern void transport_write_reset(int);
653 extern BOOL transport_write_string(int, const char *, ...);
654 extern BOOL transport_headers_send(transport_ctx *,
655 BOOL (*)(transport_ctx *, const uschar *, int));
656 extern gstring * transport_show_supported(gstring *);
657 extern BOOL transport_write_message(transport_ctx *, int);
658 extern void tree_add_duplicate(const uschar *, address_item *);
659 extern void tree_add_nonrecipient(const uschar *);
660 extern void tree_add_unusable(const host_item *);
661 extern void tree_dup(tree_node **, tree_node *);
662 extern int tree_insertnode(tree_node **, tree_node *);
663 extern tree_node *tree_search(tree_node *, const uschar *);
664 extern void tree_write(tree_node *, FILE *);
665 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
667 #ifdef WITH_CONTENT_SCAN
668 extern void unspool_mbox(void);
671 extern gstring *utf8_version_report(gstring *);
674 extern int vaguely_random_number(int);
676 extern int vaguely_random_number_fallback(int);
678 extern int verify_address(address_item *, FILE *, int, int, int, int,
679 uschar *, uschar *, BOOL *);
680 extern int verify_check_dnsbl(int, const uschar **, uschar **);
681 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
682 uschar *, uschar *, int, int *);
683 extern int verify_check_headers(uschar **);
684 extern int verify_check_header_names_ascii(uschar **);
685 extern int verify_check_host(uschar **);
686 extern int verify_check_notblind(BOOL);
687 extern int verify_check_given_host(const uschar **, const host_item *);
688 extern int verify_check_this_host(const uschar **, unsigned int *,
689 const uschar*, const uschar *, const uschar **);
690 extern address_item *verify_checked_sender(const uschar *);
691 extern void verify_get_ident(int);
692 extern void verify_quota(uschar *);
693 extern int verify_quota_call(const uschar *, int, int, uschar **);
694 extern BOOL verify_sender(int *, uschar **);
695 extern BOOL verify_sender_preliminary(int *, uschar **);
696 extern void version_init(void);
698 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
699 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
700 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
702 #ifdef EXPERIMENTAL_XCLIENT
703 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
704 extern gstring * xclient_smtp_advertise_str(gstring *);
706 extern uschar *xtextencode(uschar *, int);
707 extern int xtextdecode(uschar *, uschar **);
710 /******************************************************************************/
711 /* Predicate: if an address is in a tainted pool.
712 By extension, a variable pointing to this address is tainted.
716 is_tainted(const void * p)
718 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
722 extern BOOL is_tainted_fn(const void *);
723 return is_tainted_fn(p);
728 is_incompatible(const void * old, const void * new)
730 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
734 extern BOOL is_incompatible_fn(const void *, const void *);
735 return is_incompatible_fn(old, new);
739 /******************************************************************************/
740 /* String functions */
741 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
743 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
744 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
746 return US strcat(CS dst, CCS src);
748 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
750 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
751 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
753 return US strcpy(CS dst, CCS src);
755 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
757 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
758 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
760 return US strncat(CS dst, CCS src, n);
762 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
764 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
765 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
767 return US strncpy(CS dst, CCS src, n);
769 /*XXX will likely need unchecked copy also */
772 /* Advance the string pointer given over any whitespace.
773 Return the next char as there's enough places using it to be useful. */
775 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
777 static inline uschar skip_whitespace(const uschar ** sp)
778 { while (isspace(**sp)) (*sp)++; return **sp; }
780 /* Ditto, non-whitespace */
782 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
783 static inline uschar skip_nonwhite(const uschar ** sp)
784 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
787 /******************************************************************************/
789 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
790 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
791 chown(<exim-uid>, <exim-gid>).
793 Probably because the idmapping is broken, misconfigured or set up in
794 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
795 case of misconfiguration, or if there are more such broken systems
796 out, I try to impose as least impact as possible and for now just write
797 a panic log entry pointing to the bug report. You're encouraged to
798 contact the developers, if you experience this issue.
800 fd the file descriptor (or -1 if not valid)
801 name the file name for error messages or for file operations,
806 returns 0 on success, -1 on failure */
809 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
811 return fchown(fd, owner, group)
812 ? exim_chown_failure(fd, name, owner, group) : 0;
816 exim_chown(const uschar *name, uid_t owner, gid_t group)
818 return chown(CCS name, owner, group)
819 ? exim_chown_failure(-1, name, owner, group) : 0;
821 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
823 /******************************************************************************/
824 /* String functions */
826 #if !defined(MACRO_PREDEF)
827 /*************************************************
828 * Copy and save string *
829 *************************************************/
831 /* This function assumes that memcpy() is faster than strcpy().
832 The result is explicitly nul-terminated.
835 static inline uschar *
836 string_copyn_taint_trc(const uschar * s, unsigned len,
837 const void * proto_mem, const char * func, int line)
840 unsigned slen = Ustrlen(s);
841 if (len > slen) len = slen;
842 ss = store_get_3(len + 1, proto_mem, func, line);
848 static inline uschar *
849 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
850 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
852 static inline uschar *
853 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
854 { return string_copyn_taint_trc(s, len, s, func, line); }
855 static inline uschar *
856 string_copy_trc(const uschar * s, const char * func, int line)
857 { return string_copy_taint_trc(s, s, func, line); }
860 /* String-copy functions explicitly setting the taint status */
862 #define string_copyn_taint(s, len, proto_mem) \
863 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
864 #define string_copy_taint(s, proto_mem) \
865 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
867 /* Simple string-copy functions maintaining the taint */
869 #define string_copyn(s, len) \
870 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
871 #define string_copy(s) \
872 string_copy_trc((s), __FUNCTION__, __LINE__)
875 /*************************************************
876 * Copy, lowercase and save string *
877 *************************************************/
880 Argument: string to copy
881 Returns: copy of string in new store, with letters lowercased
884 static inline uschar *
885 string_copylc(const uschar * s)
887 uschar * ss = store_get(Ustrlen(s) + 1, s);
889 while (*s) *p++ = tolower(*s++);
896 /*************************************************
897 * Copy, lowercase, and save string, given length *
898 *************************************************/
900 /* It is assumed the data contains no zeros. A zero is added
905 n number of characters
907 Returns: copy of string in new store, with letters lowercased
910 static inline uschar *
911 string_copynlc(uschar * s, int n)
913 uschar * ss = store_get(n + 1, s);
915 while (n-- > 0) *p++ = tolower(*s++);
921 # ifndef COMPILE_UTILITY
922 /*************************************************
923 * Copy and save string in longterm store *
924 *************************************************/
926 /* This function assumes that memcpy() is faster than strcpy().
928 Argument: string to copy
929 Returns: copy of string in new store
932 static inline uschar *
933 string_copy_perm(const uschar *s, BOOL force_taint)
935 int old_pool = store_pool;
936 int len = Ustrlen(s) + 1;
939 store_pool = POOL_PERM;
940 ss = store_get(len, force_taint ? GET_TAINTED : s);
942 store_pool = old_pool;
949 /* sprintf into a buffer, taint-unchecked */
952 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
954 gstring gs = { .size = siz, .ptr = 0, .s = buf };
957 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
963 /******************************************************************************/
964 /* Growable-string functions */
966 /* Create a growable-string with some preassigned space */
968 #define string_get_tainted(size, proto_mem) \
969 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
971 static inline gstring *
972 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
974 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
975 g->size = size; /*XXX would be good if we could see the actual alloc size */
981 #define string_get(size) \
982 string_get_trc((size), __FUNCTION__, __LINE__)
984 static inline gstring *
985 string_get_trc(unsigned size, const char * func, unsigned line)
987 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
990 /* NUL-terminate the C string in the growable-string, and return it. */
992 static inline uschar *
993 string_from_gstring(gstring * g)
1001 len_string_from_gstring(gstring * g, uschar ** sp)
1006 g->s[g->ptr] = '\0';
1016 static inline uschar *
1017 string_copy_from_gstring(gstring * g)
1019 return g ? string_copyn(g->s, g->ptr) : NULL;
1022 static inline unsigned
1023 gstring_length(const gstring * g)
1025 return g ? (unsigned)g->ptr : 0;
1028 static inline uschar
1029 gstring_last_char(gstring * g)
1031 return g->s[g->ptr-1];
1035 gstring_trim(gstring * g, unsigned amount)
1041 gstring_trim_trailing(gstring * g, uschar c)
1043 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1047 gstring_reset(gstring * g)
1053 #define gstring_release_unused(g) \
1054 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1057 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1059 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1063 /* plain string append to a growable-string */
1065 static inline gstring * string_cat(gstring * g, const uschar * s)
1068 static inline gstring *
1069 string_cat(gstring * g, const uschar * s)
1071 return string_catn(g, s, Ustrlen(s));
1075 /* sprintf-append to a growable-string */
1077 #define string_fmt_append(g, fmt, ...) \
1078 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1079 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1081 #define string_fmt_append_f(g, flgs, fmt, ...) \
1082 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1083 flgs, fmt, __VA_ARGS__)
1085 static inline gstring *
1086 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1087 unsigned flags, const char *format, ...)
1090 va_start(ap, format);
1091 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1098 /* Copy the content of a string to tainted memory. The proto_mem arg
1099 will always be tainted, and suitable as a prototype. */
1102 gstring_rebuffer(gstring * g, const void * proto_mem)
1104 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1105 memcpy(s, g->s, g->ptr);
1109 /* Append one gstring to another */
1111 static inline gstring *
1112 gstring_append(gstring * dest, gstring * item)
1114 return string_catn(dest, item->s, item->ptr);
1118 # ifndef COMPILE_UTILITY
1119 /******************************************************************************/
1120 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1121 for them as the strings we proceed to copy from them meant they could not be
1122 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1123 we do have to take care over marking tainted all copied strings. A separate pool
1124 could be used and would handle that implicitly. */
1126 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1128 static inline dns_answer *
1129 store_get_dns_answer_trc(const uschar * func, unsigned line)
1131 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1134 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1137 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1139 store_free_3(dnsa, CCS func, line);
1143 /* Check for an RR being large enough. Return TRUE iff bad. */
1145 rr_bad_size(const dns_record * rr, size_t minbytes)
1147 return rr->size < minbytes;
1150 /* Check for an RR having further data beyond a given pointer.
1151 Return TRUE iff bad. */
1153 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1155 return rr_bad_size(rr, ptr - rr->data + minbytes);
1158 /******************************************************************************/
1159 /* Routines with knowledge of spool layout */
1162 spool_pname_buf(uschar * buf, int len)
1164 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1167 static inline uschar *
1168 spool_dname(const uschar * purpose, uschar * subdir)
1170 return string_sprintf("%s/%s/%s/%s",
1171 spool_directory, queue_name, purpose, subdir);
1175 static inline uschar *
1176 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1178 return string_sprintf("%s%s%s%s%s",
1181 *subdir ? "/" : "", subdir);
1184 static inline uschar *
1185 spool_sname(const uschar * purpose, const uschar * subdir)
1187 return spool_q_sname(purpose, queue_name, subdir);
1190 static inline uschar *
1191 spool_q_fname(const uschar * purpose, const uschar * q,
1192 const uschar * subdir, const uschar * fname, const uschar * suffix)
1194 return string_sprintf("%s/%s/%s/%s/%s%s",
1195 spool_directory, q, purpose, subdir, fname, suffix);
1198 static inline uschar *
1199 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1200 const uschar * suffix)
1202 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1203 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1204 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1205 uschar * buf = store_get(len, GET_UNTAINTED);
1206 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1207 spool_directory, queue_name, purpose, subdir, fname, suffix);
1210 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1215 set_subdir_str(uschar * subdir_str, const uschar * name,
1216 int search_sequence)
1218 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1219 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1220 subdir_str[1] = '\0';
1223 /******************************************************************************/
1224 /* Message-ID format transition knowlege */
1227 is_new_message_id(const uschar * id)
1229 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1233 is_old_message_id(const uschar * id)
1235 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1238 static inline unsigned
1239 spool_data_start_offset(const uschar * id)
1241 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1242 return SPOOL_DATA_START_OFFSET;
1245 /******************************************************************************/
1246 /* Time calculations */
1248 /* Diff two times (later, earlier) returning diff in 1st arg */
1250 timediff(struct timeval * later, const struct timeval * earlier)
1252 later->tv_sec -= earlier->tv_sec;
1253 if ((later->tv_usec -= earlier->tv_usec) < 0)
1256 later->tv_usec += 1000*1000;
1261 timesince(struct timeval * diff, const struct timeval * then)
1263 gettimeofday(diff, NULL);
1264 timediff(diff, then);
1267 static inline uschar *
1268 string_timediff(const struct timeval * diff)
1270 static uschar buf[16];
1272 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1273 return readconf_printtime((int)diff->tv_sec);
1275 snprintf(CS buf, sizeof(buf), "%u.%03us",
1276 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1281 static inline uschar *
1282 string_timesince(const struct timeval * then)
1284 struct timeval diff;
1285 timesince(&diff, then);
1286 return string_timediff(&diff);
1290 report_time_since(const struct timeval * t0, const uschar * where)
1292 # ifdef MEASURE_TIMING
1293 struct timeval diff;
1294 timesince(&diff, t0);
1295 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1296 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1302 testharness_pause_ms(int millisec)
1304 #ifndef MEASURE_TIMING
1305 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1309 /******************************************************************************/
1310 /* Taint-checked file opens */
1313 exim_open2(const char *pathname, int flags)
1315 if (!is_tainted(pathname)) return open(pathname, flags);
1316 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1321 exim_open(const char *pathname, int flags, mode_t mode)
1323 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1324 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1328 #ifdef EXIM_HAVE_OPENAT
1330 exim_openat(int dirfd, const char *pathname, int flags)
1332 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1333 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1338 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1340 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1341 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1347 static inline FILE *
1348 exim_fopen(const char *pathname, const char *mode)
1350 if (!is_tainted(pathname)) return fopen(pathname, mode);
1351 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1357 exim_opendir(const uschar * name)
1359 if (!is_tainted(name)) return opendir(CCS name);
1360 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1365 /******************************************************************************/
1366 # if !defined(COMPILE_UTILITY)
1368 /* We use the PID of the head process for a connection-id. Note that
1369 this is only for tracking a received connection and what it directly
1370 causes; there is no inttent to describe transport-initiated TCP connections.
1371 The value is intented to be a cookie usable for logging, and we might change
1372 the generator for it at any time. */
1375 set_connection_id(void)
1377 connection_id = string_sprintf("%lu", (u_long)getpid());
1381 /* Process manipulation */
1384 exim_fork(const unsigned char * purpose)
1387 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1388 if ((pid = fork()) == 0)
1390 f.daemon_listen = FALSE;
1391 process_purpose = purpose;
1392 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1396 testharness_pause_ms(100); /* let child work */
1397 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1404 child_open_exim(int * fdptr, const uschar * purpose)
1405 { return child_open_exim_function(fdptr, purpose); }
1408 child_open_exim2(int * fdptr, uschar * sender,
1409 uschar * sender_auth, const uschar * purpose)
1410 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1413 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1414 int *outfdptr, BOOL make_leader, const uschar * purpose)
1415 { return child_open_function(argv, envp, newumask, infdptr,
1416 outfdptr, make_leader, purpose);
1419 /* Return 1 if fd is usable per pollbits, else 0 */
1421 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1423 struct pollfd p = {.fd = fd, .events = pollbits};
1424 return poll(&p, 1, tmo_millisec);
1427 /******************************************************************************/
1428 /* Client-side smtp log string, for debug */
1431 smtp_debug_cmd_log_init(void)
1433 # ifndef DISABLE_CLIENT_CMD_LOG
1434 int old_pool = store_pool;
1435 store_pool = POOL_PERM;
1436 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1437 *client_cmd_log->s = '\0';
1438 store_pool = old_pool;
1444 smtp_debug_cmd(const uschar * buf, int mode)
1446 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1447 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1449 # ifndef DISABLE_CLIENT_CMD_LOG
1451 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1452 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1453 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1454 if (mode == SCMD_BUFFER)
1455 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1456 else if (mode == SCMD_MORE)
1457 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1458 store_pool = old_pool;
1464 /* This might be called both due to callout and then from delivery.
1465 Use memory that will not be released between those phases.
1468 smtp_debug_resp(const uschar * buf)
1470 # ifndef DISABLE_CLIENT_CMD_LOG
1471 int old_pool = store_pool;
1472 store_pool = POOL_PERM;
1473 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1474 buf[3] == '-' ? 4 : 3);
1475 store_pool = old_pool;
1481 smtp_debug_cmd_report(void)
1483 # ifndef DISABLE_CLIENT_CMD_LOG
1484 if (client_cmd_log && *client_cmd_log->s)
1486 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1487 gstring_reset(client_cmd_log);
1490 debug_printf("cmdlog: (unset)\n");
1497 expand_max_rcpt(const uschar * str_max_rcpt)
1499 const uschar * s = expand_cstring(str_max_rcpt);
1501 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1504 /******************************************************************************/
1505 /* Queue-runner operations */
1508 is_onetime_qrun(void)
1510 return qrunners && !qrunners->next && qrunners->interval == 0;
1514 is_multiple_qrun(void)
1516 return qrunners && (qrunners->interval > 0 || qrunners->next);
1520 # endif /* !COMPILE_UTILITY */
1522 /******************************************************************************/
1523 #endif /* !MACRO_PREDEF */
1525 #endif /* _FUNCTIONS_H_ */
1529 /* End of functions.h */