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);
342 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
343 extern BOOL macro_read_assignment(uschar *);
344 extern uschar *macros_expand(int, int *, BOOL *);
345 extern void mainlog_close(void);
346 #ifdef WITH_CONTENT_SCAN
347 extern int malware(const uschar *, BOOL, int);
348 extern int malware_in_file(const uschar *);
349 extern void malware_init(void);
350 extern gstring * malware_show_supported(gstring *);
352 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
353 unsigned int *, int, int, const uschar **);
354 extern int match_address_list_basic(const uschar *, const uschar **, int);
355 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
356 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
357 const uschar *, const uschar **);
358 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
359 unsigned int *, int, BOOL, const uschar **);
360 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
363 extern void message_start(void);
364 extern void message_tidyup(void);
365 extern void md5_end(md5 *, const uschar *, int, uschar *);
366 extern void md5_mid(md5 *, const uschar *);
367 extern void md5_start(md5 *);
368 extern void millisleep(int);
369 #ifdef WITH_CONTENT_SCAN
370 struct mime_boundary_context;
371 extern int mime_acl_check(uschar *acl, FILE *f,
372 struct mime_boundary_context *, uschar **, uschar **);
373 extern int mime_decode(const uschar **);
374 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
375 extern int mime_regex(const uschar **, BOOL);
376 extern void mime_set_anomaly(int);
378 extern uschar *moan_check_errorcopy(const uschar *);
379 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
381 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
382 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
383 header_line *, FILE *, uschar *);
384 extern void moan_tell_someone(uschar *, address_item *,
385 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
386 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
387 extern void moan_write_from(FILE *);
388 extern void moan_write_references(FILE *, uschar *);
389 extern FILE *modefopen(const uschar *, const char *, mode_t);
391 extern int open_cutthrough_connection( address_item * addr );
393 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
395 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
396 const uschar *, const uschar *, error_block **);
397 extern uschar *parse_find_address_end(const uschar *, BOOL);
398 extern const uschar *parse_find_at(const uschar *);
399 extern const uschar *parse_fix_phrase(const uschar *, int);
400 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
401 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
403 extern const uschar *parse_date_time(const uschar *str, time_t *t);
404 extern void priv_drop_temp(const uid_t, const gid_t);
405 extern void priv_restore(void);
407 extern BOOL proxy_protocol_host(void);
408 extern void proxy_protocol_setup(void);
411 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
412 extern void queue_check_only(void);
413 extern unsigned queue_count(void);
414 extern unsigned queue_count_cached(void);
415 extern void queue_list(int, const uschar **, int);
416 #ifndef DISABLE_QUEUE_RAMP
417 extern void queue_notify_daemon(const uschar * hostname);
419 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
421 extern int random_number(int);
422 extern const uschar *rc_to_string(int);
423 extern int rda_interpret(redirect_block *, int, const uschar *,
424 const sieve_block *, const ugid_block *, address_item **,
425 uschar **, error_block **, int *, const uschar *);
426 extern int rda_is_filter(const uschar *);
427 extern BOOL readconf_depends(driver_instance *, uschar *);
428 extern void readconf_driver_init(driver_instance **, driver_info **, int,
429 void *, int, optionlist *, int, const uschar *);
430 extern const uschar *readconf_find_option(void *);
431 extern void readconf_main(BOOL);
432 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
433 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
434 extern uschar *readconf_printtime(int);
435 extern const uschar *readconf_readname(uschar *, int, const uschar *);
436 extern int readconf_readtime(const uschar *, int, BOOL);
437 extern void readconf_rest(void);
438 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
439 extern void readconf_save_config(const uschar *);
440 extern void read_message_body(BOOL);
441 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
442 extern BOOL receive_check_fs(int);
443 extern BOOL receive_check_set_sender(const uschar *);
444 extern BOOL receive_msg(BOOL);
445 extern int_eximarith_t receive_statvfs(BOOL, int *);
446 extern void receive_swallow_smtp(void);
447 extern int recv_fd_from_sock(int);
448 #ifdef WITH_CONTENT_SCAN
449 extern int regex(const uschar **, BOOL);
450 extern void regex_vars_clear(void);
452 extern void regex_at_daemon(const uschar *);
453 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
454 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
455 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
456 pcre2_compile_context *);
457 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
459 extern void retry_add_item(address_item *, const uschar *, int);
460 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
461 const uschar **, const uschar **);
462 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
463 extern const uschar *retry_host_key_build(const host_item *, BOOL,
465 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
466 dbdata_retry *, time_t);
467 extern void retry_update(address_item **, address_item **, address_item **);
468 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
469 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
470 extern header_line *rewrite_header(header_line *,
471 const uschar *, const uschar *,
472 rewrite_rule *, int, BOOL);
473 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
475 extern void rewrite_test(const uschar *);
476 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
478 extern int route_address(address_item *, address_item **, address_item **,
479 address_item **, address_item **, int);
480 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
481 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
482 extern BOOL route_findgroup(uschar *, gid_t *);
483 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
484 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
486 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
487 struct passwd **, uid_t *, uschar **);
488 extern void route_init(void);
489 extern gstring * route_show_supported(gstring *);
490 extern void route_tidyup(void);
491 extern uschar *router_current_name(void);
493 extern uschar *search_args(int, uschar *, uschar *, uschar **, const uschar *);
494 extern uschar *search_find(void *, const uschar *, uschar *, int,
495 const uschar *, int, int, int *, const uschar *);
496 extern int search_findtype(const uschar *, int);
497 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
498 int *, const uschar **);
499 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
500 extern void search_tidyup(void);
501 extern BOOL send_fd_over_socket(int, int);
502 extern uschar *sender_helo_verified_boolstr(void);
503 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
504 extern void sha1_end(hctx *, const uschar *, int, uschar *);
505 extern void sha1_mid(hctx *, const uschar *);
506 extern void sha1_start(hctx *);
507 extern int sieve_interpret(const uschar *, int, const sieve_block *,
508 address_item **, uschar **);
509 extern void sigalrm_handler(int);
510 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
511 extern int smtp_boundsock(smtp_connect_args *);
512 extern void smtp_closedown(uschar *);
513 extern void smtp_command_timeout_exit(void) NORETURN;
514 extern void smtp_command_sigterm_exit(void) NORETURN;
515 extern void smtp_data_timeout_exit(void) NORETURN;
516 extern void smtp_data_sigint_exit(void) NORETURN;
517 extern void smtp_deliver_init(void);
518 extern uschar *smtp_cmd_hist(void);
519 extern int smtp_connect(smtp_connect_args *, const blob *);
520 extern int smtp_feof(void);
521 extern int smtp_ferror(void);
522 extern uschar *smtp_get_connection_info(void);
523 extern BOOL smtp_get_interface(uschar *, int, address_item *,
524 uschar **, uschar *);
525 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
526 extern int smtp_getc(unsigned);
527 extern uschar *smtp_getbuf(unsigned *);
528 extern void smtp_get_cache(unsigned);
529 extern BOOL smtp_hasc(void);
530 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
531 extern void smtp_log_no_mail(void);
532 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
533 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
534 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
535 extern void *smtp_reset(void *);
536 extern void smtp_respond(uschar *, int, BOOL, uschar *);
537 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
538 extern void smtp_port_for_connect(host_item *, int);
539 extern void smtp_send_prohibition_message(int, uschar *);
540 extern int smtp_setup_msg(void);
541 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
542 extern BOOL smtp_start_session(void);
543 extern int smtp_ungetc(int);
544 extern BOOL smtp_verify_helo(void);
545 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
546 #ifdef WITH_CONTENT_SCAN
547 extern int spam(const uschar **);
548 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
550 extern void spool_clear_header_globals(void);
551 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
552 extern int spool_open_datafile(const uschar *);
553 extern int spool_open_temp(uschar *);
554 extern int spool_read_header(uschar *, BOOL, BOOL);
555 extern uschar *spool_sender_from_msgid(const uschar *);
556 extern int spool_write_header(const uschar *, int, uschar **);
557 extern int stdin_getc(unsigned);
558 extern int stdin_feof(void);
559 extern int stdin_ferror(void);
560 extern BOOL stdin_hasc(void);
561 extern int stdin_ungetc(int);
563 extern void stackdump(void);
564 extern void store_exit(void);
565 extern void store_init(void);
566 extern void store_writeprotect(int);
568 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
569 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
570 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
571 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
572 extern uschar *string_base62_32(unsigned long int);
573 extern uschar *string_base62_64(unsigned long int);
574 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
575 extern int string_compare_by_pointer(const void *, const void *);
576 extern uschar *string_copy_dnsdomain(uschar *);
577 extern uschar *string_copy_malloc(const uschar *);
578 extern uschar *string_dequote(const uschar **);
579 extern uschar *string_format_size(int, uschar *);
580 extern int string_interpret_escape(const uschar **);
581 extern int string_is_ip_address(const uschar *, int *);
582 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
584 extern BOOL string_is_utf8(const uschar *);
586 extern const uschar *string_printing2(const uschar *, int);
587 extern uschar *string_split_message(uschar *);
588 extern uschar *string_unprinting(uschar *);
590 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
591 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
592 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
593 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
594 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
597 #define string_format(buf, siz, fmt, ...) \
598 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
599 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
600 const char *, ...) ALMOST_PRINTF(5,6);
602 #define string_vformat(g, flgs, fmt, ap) \
603 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
604 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
605 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
606 unsigned, unsigned, const char *, va_list);
608 #define string_open_failed(fmt, ...) \
609 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
610 extern uschar *string_open_failed_trc(const uschar *, unsigned,
611 const char *, ...) PRINTF_FUNCTION(3,4);
613 #define string_nextinlist(lp, sp, b, l) \
614 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
615 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
616 const uschar * func, int line);
618 extern int strcmpic(const uschar *, const uschar *);
619 extern int strncmpic(const uschar *, const uschar *, int);
620 extern uschar *strstric(uschar *, uschar *, BOOL);
621 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
623 extern int test_harness_fudged_queue_time(int);
624 extern void tcp_init(void);
625 #ifdef EXIM_TFO_PROBE
626 extern void tfo_probe(void);
628 extern void tls_modify_variables(tls_support *);
629 extern uschar *tod_stamp(int);
631 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
633 extern uschar *transport_current_name(void);
634 extern void transport_do_pass_socket(const uschar *, const uschar *,
635 const uschar *, uschar *, int);
636 extern void transport_init(void);
637 extern const uschar *transport_rcpt_address(address_item *, BOOL);
638 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
639 unsigned, int, address_item *, const uschar *, uschar **);
640 extern void transport_update_waiting(host_item *, const uschar *);
641 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
642 extern void transport_write_reset(int);
643 extern BOOL transport_write_string(int, const char *, ...);
644 extern BOOL transport_headers_send(transport_ctx *,
645 BOOL (*)(transport_ctx *, const uschar *, int));
646 extern gstring * transport_show_supported(gstring *);
647 extern BOOL transport_write_message(transport_ctx *, int);
648 extern void tree_add_duplicate(const uschar *, address_item *);
649 extern void tree_add_nonrecipient(const uschar *);
650 extern void tree_add_unusable(const host_item *);
651 extern void tree_dup(tree_node **, tree_node *);
652 extern int tree_insertnode(tree_node **, tree_node *);
653 extern tree_node *tree_search(tree_node *, const uschar *);
654 extern void tree_write(tree_node *, FILE *);
655 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
657 #ifdef WITH_CONTENT_SCAN
658 extern void unspool_mbox(void);
661 extern gstring *utf8_version_report(gstring *);
664 extern int vaguely_random_number(int);
666 extern int vaguely_random_number_fallback(int);
668 extern int verify_address(address_item *, FILE *, int, int, int, int,
669 uschar *, uschar *, BOOL *);
670 extern int verify_check_dnsbl(int, const uschar **, uschar **);
671 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
672 uschar *, uschar *, int, int *);
673 extern int verify_check_headers(uschar **);
674 extern int verify_check_header_names_ascii(uschar **);
675 extern int verify_check_host(uschar **);
676 extern int verify_check_notblind(BOOL);
677 extern int verify_check_given_host(const uschar **, const host_item *);
678 extern int verify_check_this_host(const uschar **, unsigned int *,
679 const uschar*, const uschar *, const uschar **);
680 extern address_item *verify_checked_sender(const uschar *);
681 extern void verify_get_ident(int);
682 extern void verify_quota(uschar *);
683 extern int verify_quota_call(const uschar *, int, int, uschar **);
684 extern BOOL verify_sender(int *, uschar **);
685 extern BOOL verify_sender_preliminary(int *, uschar **);
686 extern void version_init(void);
688 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
689 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
690 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
692 #ifdef EXPERIMENTAL_XCLIENT
693 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
694 extern gstring * xclient_smtp_advertise_str(gstring *);
696 extern uschar *xtextencode(uschar *, int);
697 extern int xtextdecode(uschar *, uschar **);
700 /******************************************************************************/
701 /* Predicate: if an address is in a tainted pool.
702 By extension, a variable pointing to this address is tainted.
706 is_tainted(const void * p)
708 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
712 extern BOOL is_tainted_fn(const void *);
713 return is_tainted_fn(p);
718 is_incompatible(const void * old, const void * new)
720 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
724 extern BOOL is_incompatible_fn(const void *, const void *);
725 return is_incompatible_fn(old, new);
729 /******************************************************************************/
730 /* String functions */
731 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
733 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
734 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
736 return US strcat(CS dst, CCS src);
738 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
740 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
741 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
743 return US strcpy(CS dst, CCS src);
745 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
747 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
748 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
750 return US strncat(CS dst, CCS src, n);
752 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
754 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
755 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
757 return US strncpy(CS dst, CCS src, n);
759 /*XXX will likely need unchecked copy also */
762 /* Advance the string pointer given over any whitespace.
763 Return the next char as there's enough places using it to be useful. */
765 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
767 static inline uschar skip_whitespace(const uschar ** sp)
768 { while (isspace(**sp)) (*sp)++; return **sp; }
770 /* Ditto, non-whitespace */
772 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
773 static inline uschar skip_nonwhite(const uschar ** sp)
774 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
777 /******************************************************************************/
779 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
780 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
781 chown(<exim-uid>, <exim-gid>).
783 Probably because the idmapping is broken, misconfigured or set up in
784 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
785 case of misconfiguration, or if there are more such broken systems
786 out, I try to impose as least impact as possible and for now just write
787 a panic log entry pointing to the bug report. You're encouraged to
788 contact the developers, if you experience this issue.
790 fd the file descriptor (or -1 if not valid)
791 name the file name for error messages or for file operations,
796 returns 0 on success, -1 on failure */
799 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
801 return fchown(fd, owner, group)
802 ? exim_chown_failure(fd, name, owner, group) : 0;
806 exim_chown(const uschar *name, uid_t owner, gid_t group)
808 return chown(CCS name, owner, group)
809 ? exim_chown_failure(-1, name, owner, group) : 0;
811 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
813 /******************************************************************************/
814 /* String functions */
816 #if !defined(MACRO_PREDEF)
817 /*************************************************
818 * Copy and save string *
819 *************************************************/
821 /* This function assumes that memcpy() is faster than strcpy().
822 The result is explicitly nul-terminated.
825 static inline uschar *
826 string_copyn_taint_trc(const uschar * s, unsigned len,
827 const void * proto_mem, const char * func, int line)
830 unsigned slen = Ustrlen(s);
831 if (len > slen) len = slen;
832 ss = store_get_3(len + 1, proto_mem, func, line);
838 static inline uschar *
839 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
840 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
842 static inline uschar *
843 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
844 { return string_copyn_taint_trc(s, len, s, func, line); }
845 static inline uschar *
846 string_copy_trc(const uschar * s, const char * func, int line)
847 { return string_copy_taint_trc(s, s, func, line); }
850 /* String-copy functions explicitly setting the taint status */
852 #define string_copyn_taint(s, len, proto_mem) \
853 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
854 #define string_copy_taint(s, proto_mem) \
855 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
857 /* Simple string-copy functions maintaining the taint */
859 #define string_copyn(s, len) \
860 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
861 #define string_copy(s) \
862 string_copy_trc((s), __FUNCTION__, __LINE__)
865 /*************************************************
866 * Copy, lowercase and save string *
867 *************************************************/
870 Argument: string to copy
871 Returns: copy of string in new store, with letters lowercased
874 static inline uschar *
875 string_copylc(const uschar * s)
877 uschar * ss = store_get(Ustrlen(s) + 1, s);
879 while (*s) *p++ = tolower(*s++);
886 /*************************************************
887 * Copy, lowercase, and save string, given length *
888 *************************************************/
890 /* It is assumed the data contains no zeros. A zero is added
895 n number of characters
897 Returns: copy of string in new store, with letters lowercased
900 static inline uschar *
901 string_copynlc(uschar * s, int n)
903 uschar * ss = store_get(n + 1, s);
905 while (n-- > 0) *p++ = tolower(*s++);
911 # ifndef COMPILE_UTILITY
912 /*************************************************
913 * Copy and save string in longterm store *
914 *************************************************/
916 /* This function assumes that memcpy() is faster than strcpy().
918 Argument: string to copy
919 Returns: copy of string in new store
922 static inline uschar *
923 string_copy_perm(const uschar *s, BOOL force_taint)
925 int old_pool = store_pool;
926 int len = Ustrlen(s) + 1;
929 store_pool = POOL_PERM;
930 ss = store_get(len, force_taint ? GET_TAINTED : s);
932 store_pool = old_pool;
939 /* sprintf into a buffer, taint-unchecked */
942 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
944 gstring gs = { .size = siz, .ptr = 0, .s = buf };
947 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
953 /******************************************************************************/
954 /* Growable-string functions */
956 /* Create a growable-string with some preassigned space */
958 #define string_get_tainted(size, proto_mem) \
959 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
961 static inline gstring *
962 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
964 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
965 g->size = size; /*XXX would be good if we could see the actual alloc size */
971 #define string_get(size) \
972 string_get_trc((size), __FUNCTION__, __LINE__)
974 static inline gstring *
975 string_get_trc(unsigned size, const char * func, unsigned line)
977 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
980 /* NUL-terminate the C string in the growable-string, and return it. */
982 static inline uschar *
983 string_from_gstring(gstring * g)
991 len_string_from_gstring(gstring * g, uschar ** sp)
1006 static inline uschar *
1007 string_copy_from_gstring(gstring * g)
1009 return g ? string_copyn(g->s, g->ptr) : NULL;
1012 static inline unsigned
1013 gstring_length(const gstring * g)
1015 return g ? (unsigned)g->ptr : 0;
1018 static inline uschar
1019 gstring_last_char(gstring * g)
1021 return g->s[g->ptr-1];
1025 gstring_trim(gstring * g, unsigned amount)
1031 gstring_trim_trailing(gstring * g, uschar c)
1033 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1037 gstring_reset(gstring * g)
1043 #define gstring_release_unused(g) \
1044 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1047 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1049 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1053 /* plain string append to a growable-string */
1055 static inline gstring * string_cat(gstring * g, const uschar * s)
1058 static inline gstring *
1059 string_cat(gstring * g, const uschar * s)
1061 return string_catn(g, s, Ustrlen(s));
1065 /* sprintf-append to a growable-string */
1067 #define string_fmt_append(g, fmt, ...) \
1068 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1069 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1071 #define string_fmt_append_f(g, flgs, fmt, ...) \
1072 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1073 flgs, fmt, __VA_ARGS__)
1075 static inline gstring *
1076 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1077 unsigned flags, const char *format, ...)
1080 va_start(ap, format);
1081 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1088 /* Copy the content of a string to tainted memory. The proto_mem arg
1089 will always be tainted, and suitable as a prototype. */
1092 gstring_rebuffer(gstring * g, const void * proto_mem)
1094 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1095 memcpy(s, g->s, g->ptr);
1099 /* Append one gstring to another */
1101 static inline gstring *
1102 gstring_append(gstring * dest, gstring * item)
1104 return string_catn(dest, item->s, item->ptr);
1108 # ifndef COMPILE_UTILITY
1109 /******************************************************************************/
1110 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1111 for them as the strings we proceed to copy from them meant they could not be
1112 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1113 we do have to take care over marking tainted all copied strings. A separate pool
1114 could be used and would handle that implicitly. */
1116 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1118 static inline dns_answer *
1119 store_get_dns_answer_trc(const uschar * func, unsigned line)
1121 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1124 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1127 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1129 store_free_3(dnsa, CCS func, line);
1133 /* Check for an RR being large enough. Return TRUE iff bad. */
1135 rr_bad_size(const dns_record * rr, size_t minbytes)
1137 return rr->size < minbytes;
1140 /* Check for an RR having further data beyond a given pointer.
1141 Return TRUE iff bad. */
1143 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1145 return rr_bad_size(rr, ptr - rr->data + minbytes);
1148 /******************************************************************************/
1149 /* Routines with knowledge of spool layout */
1152 spool_pname_buf(uschar * buf, int len)
1154 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1157 static inline uschar *
1158 spool_dname(const uschar * purpose, uschar * subdir)
1160 return string_sprintf("%s/%s/%s/%s",
1161 spool_directory, queue_name, purpose, subdir);
1165 static inline uschar *
1166 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1168 return string_sprintf("%s%s%s%s%s",
1171 *subdir ? "/" : "", subdir);
1174 static inline uschar *
1175 spool_sname(const uschar * purpose, const uschar * subdir)
1177 return spool_q_sname(purpose, queue_name, subdir);
1180 static inline uschar *
1181 spool_q_fname(const uschar * purpose, const uschar * q,
1182 const uschar * subdir, const uschar * fname, const uschar * suffix)
1184 return string_sprintf("%s/%s/%s/%s/%s%s",
1185 spool_directory, q, purpose, subdir, fname, suffix);
1188 static inline uschar *
1189 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1190 const uschar * suffix)
1192 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1193 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1194 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1195 uschar * buf = store_get(len, GET_UNTAINTED);
1196 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1197 spool_directory, queue_name, purpose, subdir, fname, suffix);
1200 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1205 set_subdir_str(uschar * subdir_str, const uschar * name,
1206 int search_sequence)
1208 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1209 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1210 subdir_str[1] = '\0';
1213 /******************************************************************************/
1214 /* Message-ID format transition knowlege */
1217 is_new_message_id(const uschar * id)
1219 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1223 is_old_message_id(const uschar * id)
1225 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1228 static inline unsigned
1229 spool_data_start_offset(const uschar * id)
1231 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1232 return SPOOL_DATA_START_OFFSET;
1235 /******************************************************************************/
1236 /* Time calculations */
1238 /* Diff two times (later, earlier) returning diff in 1st arg */
1240 timediff(struct timeval * later, const struct timeval * earlier)
1242 later->tv_sec -= earlier->tv_sec;
1243 if ((later->tv_usec -= earlier->tv_usec) < 0)
1246 later->tv_usec += 1000*1000;
1251 timesince(struct timeval * diff, const struct timeval * then)
1253 gettimeofday(diff, NULL);
1254 timediff(diff, then);
1257 static inline uschar *
1258 string_timediff(const struct timeval * diff)
1260 static uschar buf[16];
1262 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1263 return readconf_printtime((int)diff->tv_sec);
1265 snprintf(CS buf, sizeof(buf), "%u.%03us",
1266 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1271 static inline uschar *
1272 string_timesince(const struct timeval * then)
1274 struct timeval diff;
1275 timesince(&diff, then);
1276 return string_timediff(&diff);
1280 report_time_since(const struct timeval * t0, const uschar * where)
1282 # ifdef MEASURE_TIMING
1283 struct timeval diff;
1284 timesince(&diff, t0);
1285 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1286 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1292 testharness_pause_ms(int millisec)
1294 #ifndef MEASURE_TIMING
1295 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1299 /******************************************************************************/
1300 /* Taint-checked file opens */
1303 exim_open2(const char *pathname, int flags)
1305 if (!is_tainted(pathname)) return open(pathname, flags);
1306 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1311 exim_open(const char *pathname, int flags, mode_t mode)
1313 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1314 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1318 #ifdef EXIM_HAVE_OPENAT
1320 exim_openat(int dirfd, const char *pathname, int flags)
1322 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1323 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1328 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1330 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1331 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1337 static inline FILE *
1338 exim_fopen(const char *pathname, const char *mode)
1340 if (!is_tainted(pathname)) return fopen(pathname, mode);
1341 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1347 exim_opendir(const uschar * name)
1349 if (!is_tainted(name)) return opendir(CCS name);
1350 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1355 /******************************************************************************/
1356 # if !defined(COMPILE_UTILITY)
1358 /* We use the PID of the head process for a connection-id. Note that
1359 this is only for tracking a received connection and what it directly
1360 causes; there is no inttent to describe transport-initiated TCP connections.
1361 The value is intented to be a cookie usable for logging, and we might change
1362 the generator for it at any time. */
1365 set_connection_id(void)
1367 connection_id = string_sprintf("%lu", (u_long)getpid());
1371 /* Process manipulation */
1374 exim_fork(const unsigned char * purpose)
1377 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1378 if ((pid = fork()) == 0)
1380 f.daemon_listen = FALSE;
1381 process_purpose = purpose;
1382 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1386 testharness_pause_ms(100); /* let child work */
1387 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1394 child_open_exim(int * fdptr, const uschar * purpose)
1395 { return child_open_exim_function(fdptr, purpose); }
1398 child_open_exim2(int * fdptr, uschar * sender,
1399 uschar * sender_auth, const uschar * purpose)
1400 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1403 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1404 int *outfdptr, BOOL make_leader, const uschar * purpose)
1405 { return child_open_function(argv, envp, newumask, infdptr,
1406 outfdptr, make_leader, purpose);
1409 /* Return 1 if fd is usable per pollbits, else 0 */
1411 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1413 struct pollfd p = {.fd = fd, .events = pollbits};
1414 return poll(&p, 1, tmo_millisec);
1417 /******************************************************************************/
1418 /* Client-side smtp log string, for debug */
1421 smtp_debug_cmd_log_init(void)
1423 # ifndef DISABLE_CLIENT_CMD_LOG
1424 int old_pool = store_pool;
1425 store_pool = POOL_PERM;
1426 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1427 *client_cmd_log->s = '\0';
1428 store_pool = old_pool;
1434 smtp_debug_cmd(const uschar * buf, int mode)
1436 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1437 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1439 # ifndef DISABLE_CLIENT_CMD_LOG
1441 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1442 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1443 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1444 if (mode == SCMD_BUFFER)
1445 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1446 else if (mode == SCMD_MORE)
1447 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1448 store_pool = old_pool;
1454 /* This might be called both due to callout and then from delivery.
1455 Use memory that will not be released between those phases.
1458 smtp_debug_resp(const uschar * buf)
1460 # ifndef DISABLE_CLIENT_CMD_LOG
1461 int old_pool = store_pool;
1462 store_pool = POOL_PERM;
1463 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1464 buf[3] == '-' ? 4 : 3);
1465 store_pool = old_pool;
1471 smtp_debug_cmd_report(void)
1473 # ifndef DISABLE_CLIENT_CMD_LOG
1474 if (client_cmd_log && *client_cmd_log->s)
1476 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1477 gstring_reset(client_cmd_log);
1480 debug_printf("cmdlog: (unset)\n");
1487 expand_max_rcpt(const uschar * str_max_rcpt)
1489 const uschar * s = expand_cstring(str_max_rcpt);
1491 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1494 /******************************************************************************/
1495 /* Queue-runner operations */
1498 is_onetime_qrun(void)
1500 return qrunners && !qrunners->next && qrunners->interval == 0;
1504 is_multiple_qrun(void)
1506 return qrunners && (qrunners->interval > 0 || qrunners->next);
1510 # endif /* !COMPILE_UTILITY */
1512 /******************************************************************************/
1513 #endif /* !MACRO_PREDEF */
1515 #endif /* _FUNCTIONS_H_ */
1519 /* End of functions.h */