1 extern BOOL arc_init(void);
2 /*************************************************
3 * Exim - an Internet mail transport agent *
4 *************************************************/
6 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
7 /* Copyright (c) University of Cambridge 1995 - 2018 */
8 /* See the file NOTICE for conditions of use and distribution. */
9 /* SPDX-License-Identifier: GPL-2.0-or-later */
12 /* Prototypes for functions that appear in various modules. Gathered together
13 to avoid having a lot of tiddly little headers with only a couple of lines in
14 them. However, some functions that are used (or not used) by utility programs
15 are in in fact in separate headers. */
24 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
25 uschar **) WARN_UNUSED_RESULT;
26 extern void cleanup_perl(void);
27 extern uschar *init_perl(uschar *);
33 std_dh_prime_default(void);
35 std_dh_prime_named(const uschar *);
37 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
38 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
39 extern uschar * tls_cert_issuer(void *, uschar * mod);
40 extern uschar * tls_cert_not_before(void *, uschar * mod);
41 extern uschar * tls_cert_not_after(void *, uschar * mod);
42 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
43 extern uschar * tls_cert_serial_number(void *, uschar * mod);
44 extern uschar * tls_cert_signature(void *, uschar * mod);
45 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
46 extern uschar * tls_cert_subject(void *, uschar * mod);
47 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
48 extern uschar * tls_cert_version(void *, uschar * mod);
50 extern uschar * tls_cert_der_b64(void * cert);
51 extern uschar * tls_cert_fprt_md5(void *);
52 extern uschar * tls_cert_fprt_sha1(void *);
53 extern uschar * tls_cert_fprt_sha256(void *);
55 extern void tls_clean_env(void);
56 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
57 void *, tls_support *, uschar **);
58 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
59 const uschar *, uschar **);
60 extern void tls_client_creds_reload(BOOL);
62 extern void tls_close(void *, int);
63 extern BOOL tls_could_getc(void);
64 extern void tls_daemon_init(void);
65 extern int tls_daemon_tick(void);
66 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
67 extern BOOL tls_export_cert(uschar *, size_t, void *);
68 extern int tls_feof(void);
69 extern int tls_ferror(void);
70 extern uschar *tls_field_from_dn(uschar *, const uschar *);
71 extern void tls_free_cert(void **);
72 extern int tls_getc(unsigned);
73 extern uschar *tls_getbuf(unsigned *);
74 extern void tls_get_cache(unsigned);
75 extern BOOL tls_hasc(void);
76 extern BOOL tls_import_cert(const uschar *, void **);
77 extern BOOL tls_is_name_for_cert(const uschar *, void *);
79 extern BOOL tls_openssl_options_parse(uschar *, long *);
81 extern int tls_read(void *, uschar *, size_t);
82 extern int tls_server_start(uschar **);
83 extern void tls_shutdown_wr(void *);
84 extern BOOL tls_smtp_buffered(void);
85 extern int tls_ungetc(int);
86 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
87 extern void tls_watch_discard_event(int);
88 extern void tls_watch_invalidate(void);
90 extern int tls_write(void *, const uschar *, size_t, BOOL);
91 extern uschar *tls_validate_require_cipher(void);
92 extern gstring *tls_version_report(gstring *);
95 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
98 #endif /*DISABLE_TLS*/
101 /* Everything else... */
103 extern acl_block *acl_read(uschar *(*)(void), uschar **);
104 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
105 extern uschar *acl_current_verb(void);
106 extern int acl_eval(int, uschar *, uschar **, uschar **);
107 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
109 extern tree_node *acl_var_create(uschar *);
110 extern void acl_var_write(uschar *, uschar *, void *);
111 extern void add_driver_info(driver_info **, const driver_info *, size_t);
114 #ifdef EXPERIMENTAL_ARC
115 # ifdef SUPPORT_DMARC
116 extern gstring *arc_dmarc_hist_append(gstring *);
118 extern void *arc_ams_setup_sign_bodyhash(void);
119 extern const uschar *arc_header_feed(gstring *, BOOL);
120 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
121 extern void arc_sign_init(void);
122 extern const uschar *acl_verify_arc(void);
123 extern uschar * fn_arc_domains(void);
126 extern void assert_no_variables(void *, int, const char *, int);
127 extern int auth_call_pam(const uschar *, uschar **);
128 extern int auth_call_pwcheck(uschar *, uschar **);
129 extern int auth_call_radius(const uschar *, uschar **);
130 extern int auth_call_saslauthd(const uschar *, const uschar *,
131 const uschar *, const uschar *, uschar **);
132 extern int auth_check_serv_cond(auth_instance *);
133 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
134 extern int auth_client_item(void *, auth_instance *, const uschar **,
135 unsigned, int, uschar *, int);
138 extern int auth_get_data(uschar **, const uschar *, int);
139 extern int auth_get_no64_data(uschar **, uschar *);
140 extern int auth_prompt(const uschar *);
141 extern int auth_read_input(const uschar *);
142 extern gstring * auth_show_supported(gstring *);
143 extern uschar *authenticator_current_name(void);
145 #ifdef EXPERIMENTAL_ARC
146 extern gstring *authres_arc(gstring *);
148 extern gstring *authres_smtpauth(gstring *);
150 extern uschar *b64encode(const uschar *, int);
151 extern uschar *b64encode_taint(const uschar *, int, const void *);
152 extern int b64decode(const uschar *, uschar **, const void *);
153 extern int bdat_getc(unsigned);
154 extern uschar *bdat_getbuf(unsigned *);
155 extern BOOL bdat_hasc(void);
156 extern int bdat_ungetc(int);
157 extern void bdat_flush_data(void);
159 extern void bits_clear(unsigned int *, size_t, int *);
160 extern void bits_set(unsigned int *, size_t, int *);
162 extern void cancel_cutthrough_connection(BOOL, const uschar *);
163 extern gstring *cat_file(FILE *, gstring *, uschar *);
164 extern gstring *cat_file_tls(void *, gstring *, uschar *);
165 extern int check_host(void *, const uschar *, const uschar **, uschar **);
166 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
167 extern pid_t child_open_exim_function(int *, const uschar *);
168 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
170 extern pid_t child_open_function(uschar **, uschar **, int,
171 int *, int *, BOOL, const uschar *);
172 extern pid_t child_open_uid(const uschar **, const uschar **, int,
173 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
174 extern BOOL cleanup_environment(void);
175 extern void cutthrough_data_puts(uschar *, int);
176 extern void cutthrough_data_put_nl(void);
177 extern uschar *cutthrough_finaldot(void);
178 extern BOOL cutthrough_flush_send(void);
179 extern BOOL cutthrough_headers_send(void);
180 extern BOOL cutthrough_predata(void);
181 extern void release_cutthrough_connection(const uschar *);
183 extern void daemon_go(void);
184 #ifndef COMPILE_UTILITY
185 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
186 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
189 #ifdef EXPERIMENTAL_DCC
190 extern int dcc_process(uschar **);
193 extern void debug_logging_activate(const uschar *, const uschar *);
194 extern void debug_logging_from_spool(const uschar *);
195 extern void debug_logging_stop(BOOL);
196 extern void debug_print_argv(const uschar **);
197 extern void debug_print_ids(uschar *);
198 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
199 extern void debug_print_string(uschar *);
200 extern void debug_print_tree(const char *, tree_node *);
201 extern void debug_vprintf(int, const char *, va_list);
202 extern void debug_pretrigger_setup(const uschar *);
203 extern void debug_pretrigger_discard(void);
204 extern void debug_print_socket(int);
205 extern void debug_trigger_fire(void);
207 extern void decode_bits(unsigned int *, size_t, int *,
208 const uschar *, bit_table *, int, uschar *, int);
209 extern void delete_pid_file(void);
210 extern void deliver_local(address_item *, BOOL);
211 extern address_item *deliver_make_addr(const uschar *, BOOL);
212 extern void delivery_log(int, address_item *, int, uschar *);
213 extern int deliver_message(const uschar *, BOOL, BOOL);
214 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
215 extern void deliver_set_expansions(address_item *);
216 extern int deliver_split_address(address_item *);
217 extern void deliver_succeeded(address_item *);
219 extern void delivery_re_exec(int);
221 extern void die_tainted(const uschar *, const uschar *, int);
222 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
223 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
224 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
225 extern uschar *dns_build_reverse(const uschar *);
226 extern time_t dns_expire_from_soa(dns_answer *, int);
227 extern void dns_init(BOOL, BOOL, BOOL);
228 extern BOOL dns_is_aa(const dns_answer *);
229 extern BOOL dns_is_secure(const dns_answer *);
230 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
231 extern void dns_pattern_init(void);
232 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
233 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
234 extern uschar *dns_text_type(int);
235 extern void dscp_list_to_stream(FILE *);
236 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
238 extern void enq_end(uschar *);
239 extern BOOL enq_start(uschar *, unsigned);
240 #ifndef DISABLE_EVENT
241 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
242 extern void msg_event_raise(const uschar *, const address_item *);
245 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
246 extern const uschar * exim_errstr(int);
247 extern void exim_exit(int) NORETURN;
248 extern void exim_gettime(struct timeval *);
249 extern void exim_nullstd(void);
250 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
251 extern void exim_underbar_exit(int) NORETURN;
252 extern void exim_wait_tick(struct timeval *, int);
253 extern int exp_bool(address_item *,
254 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
255 const uschar *, BOOL *);
256 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
257 extern uschar *expand_file_big_buffer(const uschar *);
258 extern uschar *expand_string(uschar *); /* public, cannot make const */
259 extern const uschar *expand_string_2(const uschar *, BOOL *);
260 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
261 extern uschar *expand_getkeyed(const uschar *, const uschar *);
263 extern uschar *expand_hide_passwords(uschar * );
264 extern uschar *expand_string_copy(const uschar *);
265 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
266 extern void modify_variable(uschar *, void *);
268 extern BOOL fd_ready(int, time_t);
270 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
271 extern BOOL filter_personal(string_item *, BOOL);
272 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
273 extern BOOL filter_system_interpret(address_item **, uschar **);
275 extern uschar * fn_hdrs_added(void);
276 extern void force_fd(int, int);
278 extern void header_add(int, const char *, ...);
279 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
280 extern int header_checkname(header_line *, BOOL);
281 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
282 extern int host_address_extract_port(uschar *);
283 extern uschar *host_and_ident(BOOL);
284 extern int host_aton(const uschar *, int *);
285 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
286 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
287 extern void host_build_log_info(void);
288 extern void host_build_sender_fullhost(void);
289 extern int host_find_byname(host_item *, const uschar *, int,
290 const uschar **, BOOL);
291 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
292 uschar *, const dnssec_domains *, const uschar **, BOOL *);
293 extern ip_address_item *host_find_interfaces(void);
294 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
295 extern BOOL host_is_tls_on_connect_port(int);
296 extern int host_item_get_port(host_item *);
297 extern void host_mask(int, int *, int);
298 extern int host_name_lookup(void);
299 extern int host_nmtoa(int, const int *, int, uschar *, int);
300 extern uschar *host_ntoa(int, const void *, uschar *, int *);
301 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
303 extern uschar *imap_utf7_encode(uschar *, const uschar *,
304 uschar, uschar *, uschar **);
306 extern void invert_address(uschar *, uschar *);
307 extern int ip_addr(void *, int, const uschar *, int);
308 extern int ip_bind(int, int, uschar *, int);
309 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
310 extern int ip_connectedsocket(int, const uschar *, int, int,
311 int, host_item *, uschar **, const blob *);
312 extern int ip_get_address_family(int);
313 extern void ip_keepalive(int, const uschar *, BOOL);
314 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
315 extern int ip_socket(int, int);
317 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
318 extern int ip_unixsocket(const uschar *, uschar **);
319 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
321 extern int ipv6_nmtoa(int *, uschar *);
323 extern const uschar *local_part_quote(const uschar *);
324 extern int log_open_as_exim(const uschar * const);
325 extern void log_close_all(void);
326 extern const lookup_info * lookup_with_acq_num(unsigned);
327 #ifdef LOOKUP_MODULE_DIR
328 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
332 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
333 extern BOOL macro_read_assignment(uschar *);
334 extern uschar *macros_expand(int, int *, BOOL *);
335 extern void mainlog_close(void);
336 #ifdef WITH_CONTENT_SCAN
337 extern int malware(const uschar *, BOOL, int);
338 extern int malware_in_file(const uschar *);
339 extern void malware_init(void);
340 extern gstring * malware_show_supported(gstring *);
342 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
343 unsigned int *, int, int, const uschar **);
344 extern int match_address_list_basic(const uschar *, const uschar **, int);
345 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
346 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
347 const uschar *, const uschar **);
348 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
349 unsigned int *, int, BOOL, const uschar **);
350 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
353 extern void message_start(void);
354 extern void message_tidyup(void);
355 extern void md5_end(md5 *, const uschar *, int, uschar *);
356 extern void md5_mid(md5 *, const uschar *);
357 extern void md5_start(md5 *);
358 extern void millisleep(int);
359 #ifdef WITH_CONTENT_SCAN
360 struct mime_boundary_context;
361 extern int mime_acl_check(uschar *acl, FILE *f,
362 struct mime_boundary_context *, uschar **, uschar **);
363 extern int mime_decode(const uschar **);
364 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
365 extern int mime_regex(const uschar **, BOOL);
366 extern void mime_set_anomaly(int);
369 extern gstring *misc_mod_authres(gstring *);
370 extern int misc_mod_conn_init(const uschar *, const uschar *);
371 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
372 extern misc_module_info * misc_mod_findonly(const uschar * modname);
373 extern int misc_mod_msg_init(void);
374 extern void misc_mod_smtp_reset(void);
376 extern uschar *moan_check_errorcopy(const uschar *);
377 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
379 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
380 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
381 header_line *, FILE *, uschar *);
382 extern void moan_tell_someone(uschar *, address_item *,
383 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
384 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
385 extern void moan_write_from(FILE *);
386 extern void moan_write_references(FILE *, uschar *);
387 #ifdef LOOKUP_MODULE_DIR
388 //extern void mod_load_check(const uschar *);
390 extern FILE *modefopen(const uschar *, const char *, mode_t);
392 extern int open_cutthrough_connection( address_item * addr );
394 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
396 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
397 const uschar *, const uschar *, error_block **);
398 extern uschar *parse_find_address_end(const uschar *, BOOL);
399 extern const uschar *parse_find_at(const uschar *);
400 extern const uschar *parse_fix_phrase(const uschar *, int);
401 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
402 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
404 extern const uschar *parse_date_time(const uschar *str, time_t *t);
405 extern void priv_drop_temp(const uid_t, const gid_t);
406 extern void priv_restore(void);
408 extern BOOL proxy_protocol_host(void);
409 extern void proxy_protocol_setup(void);
412 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
413 extern void queue_check_only(void);
414 extern unsigned queue_count(void);
415 extern unsigned queue_count_cached(void);
416 extern void queue_list(int, const uschar **, int);
417 #ifndef DISABLE_QUEUE_RAMP
418 extern void queue_notify_daemon(const uschar * hostname);
420 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
422 extern int random_number(int);
423 extern const uschar *rc_to_string(int);
424 extern int rda_interpret(redirect_block *, int, const uschar *,
425 const sieve_block *, const ugid_block *, address_item **,
426 uschar **, error_block **, int *, const uschar *);
427 extern int rda_is_filter(const uschar *);
428 extern BOOL readconf_depends(driver_instance *, uschar *);
429 extern void readconf_driver_init(driver_instance **, driver_info **, int,
430 void *, int, optionlist *, int, const uschar *);
431 extern const uschar *readconf_find_option(void *);
432 extern void readconf_main(BOOL);
433 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
434 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
435 extern uschar *readconf_printtime(int);
436 extern const uschar *readconf_readname(uschar *, int, const uschar *);
437 extern int readconf_readtime(const uschar *, int, BOOL);
438 extern void readconf_rest(void);
439 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
440 extern void readconf_save_config(const uschar *);
441 extern void read_message_body(BOOL);
442 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
443 extern BOOL receive_check_fs(int);
444 extern BOOL receive_check_set_sender(const uschar *);
445 extern BOOL receive_msg(BOOL);
446 extern int_eximarith_t receive_statvfs(BOOL, int *);
447 extern void receive_swallow_smtp(void);
448 extern int recv_fd_from_sock(int);
449 #ifdef WITH_CONTENT_SCAN
450 extern int regex(const uschar **, BOOL);
451 extern void regex_vars_clear(void);
453 extern void regex_at_daemon(const uschar *);
454 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
455 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
456 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
457 pcre2_compile_context *);
458 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
460 extern void retry_add_item(address_item *, const uschar *, int);
461 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
462 const uschar **, const uschar **);
463 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
464 extern const uschar *retry_host_key_build(const host_item *, BOOL,
466 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
467 dbdata_retry *, time_t);
468 extern void retry_update(address_item **, address_item **, address_item **);
469 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
470 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
471 extern header_line *rewrite_header(header_line *,
472 const uschar *, const uschar *,
473 rewrite_rule *, int, BOOL);
474 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
476 extern void rewrite_test(const uschar *);
477 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
479 extern int route_address(address_item *, address_item **, address_item **,
480 address_item **, address_item **, int);
481 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
482 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
483 extern BOOL route_findgroup(uschar *, gid_t *);
484 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
485 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
487 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
488 struct passwd **, uid_t *, uschar **);
489 extern void route_init(void);
490 extern gstring * route_show_supported(gstring *);
491 extern void route_tidyup(void);
492 extern uschar *router_current_name(void);
494 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
496 extern uschar *search_find(void *, const uschar *, const uschar *, int,
497 const uschar *, int, int, int *, const uschar *);
498 extern const lookup_info * search_findtype(const uschar *, int);
499 extern const lookup_info * search_findtype_partial(const uschar *, int *,
500 const uschar **, int *, int *, const uschar **);
501 extern void *search_open(const uschar *, const lookup_info *, int,
503 extern void search_tidyup(void);
504 extern BOOL send_fd_over_socket(int, int);
505 extern uschar *sender_helo_verified_boolstr(void);
506 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
507 extern void sha1_end(hctx *, const uschar *, int, uschar *);
508 extern void sha1_mid(hctx *, const uschar *);
509 extern void sha1_start(hctx *);
510 extern int sieve_interpret(const uschar *, int, const sieve_block *,
511 address_item **, uschar **);
512 extern void sigalrm_handler(int);
513 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
514 extern int smtp_boundsock(smtp_connect_args *);
515 extern void smtp_closedown(uschar *);
516 extern void smtp_command_timeout_exit(void) NORETURN;
517 extern void smtp_command_sigterm_exit(void) NORETURN;
518 extern void smtp_data_timeout_exit(void) NORETURN;
519 extern void smtp_data_sigint_exit(void) NORETURN;
520 extern void smtp_deliver_init(void);
521 extern uschar *smtp_cmd_hist(void);
522 extern int smtp_connect(smtp_connect_args *, const blob *);
523 extern int smtp_feof(void);
524 extern int smtp_ferror(void);
525 extern uschar *smtp_get_connection_info(void);
526 extern BOOL smtp_get_interface(uschar *, int, address_item *,
527 uschar **, uschar *);
528 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
529 extern int smtp_getc(unsigned);
530 extern uschar *smtp_getbuf(unsigned *);
531 extern void smtp_get_cache(unsigned);
532 extern BOOL smtp_hasc(void);
533 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
534 extern void smtp_log_no_mail(void);
535 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
536 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
537 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
538 extern void *smtp_reset(void *);
539 extern void smtp_respond(uschar *, int, BOOL, uschar *);
540 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
541 extern void smtp_port_for_connect(host_item *, int);
542 extern void smtp_send_prohibition_message(int, uschar *);
543 extern int smtp_setup_msg(void);
544 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
545 extern BOOL smtp_start_session(void);
546 extern int smtp_ungetc(int);
547 extern void smtp_verify_feed(const uschar *, unsigned);
548 extern BOOL smtp_verify_helo(void);
549 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
550 #ifdef WITH_CONTENT_SCAN
551 extern int spam(const uschar **);
552 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
554 extern void spool_clear_header_globals(void);
555 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
556 extern int spool_open_datafile(const uschar *);
557 extern int spool_open_temp(uschar *);
558 extern int spool_read_header(uschar *, BOOL, BOOL);
559 extern uschar *spool_sender_from_msgid(const uschar *);
560 extern int spool_write_header(const uschar *, int, uschar **);
561 extern int stdin_getc(unsigned);
562 extern int stdin_feof(void);
563 extern int stdin_ferror(void);
564 extern BOOL stdin_hasc(void);
565 extern int stdin_ungetc(int);
567 extern void stackdump(void);
568 extern void store_exit(void);
569 extern void store_init(void);
570 extern void store_writeprotect(int);
572 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
573 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
574 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
575 extern gstring *string_append_listele_fmt(gstring *, uschar, const char *, ...) WARN_UNUSED_RESULT;
576 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
577 extern uschar *string_base62_32(unsigned long int);
578 extern uschar *string_base62_64(unsigned long int);
579 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
580 extern int string_compare_by_pointer(const void *, const void *);
581 extern uschar *string_copy_dnsdomain(uschar *);
582 extern uschar *string_copy_malloc(const uschar *);
583 extern uschar *string_dequote(const uschar **);
584 extern uschar *string_format_size(int, uschar *);
585 extern int string_interpret_escape(const uschar **);
586 extern int string_is_ip_address(const uschar *, int *);
587 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
589 extern BOOL string_is_utf8(const uschar *);
591 extern const uschar *string_printing2(const uschar *, int);
592 extern uschar *string_split_message(uschar *);
593 extern uschar *string_unprinting(uschar *);
595 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
596 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
597 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
598 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
599 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
602 #define string_format(buf, siz, fmt, ...) \
603 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
604 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
605 const char *, ...) ALMOST_PRINTF(5,6);
607 #define string_vformat(g, flgs, fmt, ap) \
608 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
609 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
610 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
611 unsigned, unsigned, const char *, va_list);
613 #define string_open_failed(fmt, ...) \
614 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
615 extern uschar *string_open_failed_trc(const uschar *, unsigned,
616 const char *, ...) PRINTF_FUNCTION(3,4);
618 #define string_nextinlist(lp, sp, b, l) \
619 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
620 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
621 const uschar * func, int line);
623 extern int strcmpic(const uschar *, const uschar *);
624 extern int strncmpic(const uschar *, const uschar *, int);
625 extern uschar *strstric(uschar *, uschar *, BOOL);
626 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
628 extern int test_harness_fudged_queue_time(int);
629 extern void tcp_init(void);
630 #ifdef EXIM_TFO_PROBE
631 extern void tfo_probe(void);
633 extern void tls_modify_variables(tls_support *);
634 extern uschar *tod_stamp(int);
636 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
638 extern uschar *transport_current_name(void);
639 extern void transport_do_pass_socket(const uschar *, const uschar *,
640 const uschar *, uschar *, int);
641 extern void transport_init(void);
642 extern const uschar *transport_rcpt_address(address_item *, BOOL);
643 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
644 unsigned, int, address_item *, const uschar *, uschar **);
645 extern void transport_update_waiting(host_item *, const uschar *);
646 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
647 extern void transport_write_reset(int);
648 extern BOOL transport_write_string(int, const char *, ...);
649 extern BOOL transport_headers_send(transport_ctx *,
650 BOOL (*)(transport_ctx *, const uschar *, int));
651 extern gstring * transport_show_supported(gstring *);
652 extern BOOL transport_write_message(transport_ctx *, int);
653 extern void tree_add_duplicate(const uschar *, address_item *);
654 extern void tree_add_nonrecipient(const uschar *);
655 extern void tree_add_unusable(const host_item *);
656 extern void tree_dup(tree_node **, tree_node *);
657 extern int tree_insertnode(tree_node **, tree_node *);
658 extern tree_node *tree_search(tree_node *, const uschar *);
659 extern void tree_write(tree_node *, FILE *);
660 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
662 #ifdef WITH_CONTENT_SCAN
663 extern void unspool_mbox(void);
666 extern gstring *utf8_version_report(gstring *);
669 extern int vaguely_random_number(int);
671 extern int vaguely_random_number_fallback(int);
673 extern int verify_address(address_item *, FILE *, int, int, int, int,
674 uschar *, uschar *, BOOL *);
675 extern int verify_check_dnsbl(int, const uschar **, uschar **);
676 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
677 uschar *, uschar *, int, int *);
678 extern int verify_check_headers(uschar **);
679 extern int verify_check_header_names_ascii(uschar **);
680 extern int verify_check_host(uschar **);
681 extern int verify_check_notblind(BOOL);
682 extern int verify_check_given_host(const uschar **, const host_item *);
683 extern int verify_check_this_host(const uschar **, unsigned int *,
684 const uschar*, const uschar *, const uschar **);
685 extern address_item *verify_checked_sender(const uschar *);
686 extern void verify_get_ident(int);
687 extern void verify_quota(uschar *);
688 extern int verify_quota_call(const uschar *, int, int, uschar **);
689 extern BOOL verify_sender(int *, uschar **);
690 extern BOOL verify_sender_preliminary(int *, uschar **);
691 extern void version_init(void);
693 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
694 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
695 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
697 #ifdef EXPERIMENTAL_XCLIENT
698 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
699 extern gstring * xclient_smtp_advertise_str(gstring *);
701 extern uschar *xtextencode(uschar *, int);
702 extern int xtextdecode(uschar *, uschar **);
705 /******************************************************************************/
706 /* Predicate: if an address is in a tainted pool.
707 By extension, a variable pointing to this address is tainted.
711 is_tainted(const void * p)
713 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
717 extern BOOL is_tainted_fn(const void *);
718 return is_tainted_fn(p);
723 is_incompatible(const void * old, const void * new)
725 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
729 extern BOOL is_incompatible_fn(const void *, const void *);
730 return is_incompatible_fn(old, new);
734 /******************************************************************************/
735 /* String functions */
736 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
738 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
739 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
741 return US strcat(CS dst, CCS src);
743 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
745 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
746 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
748 return US strcpy(CS dst, CCS src);
750 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
752 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
753 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
755 return US strncat(CS dst, CCS src, n);
757 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
759 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
760 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
762 return US strncpy(CS dst, CCS src, n);
764 /*XXX will likely need unchecked copy also */
767 /* Advance the string pointer given over any whitespace.
768 Return the next char as there's enough places using it to be useful. */
770 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
772 static inline uschar skip_whitespace(const uschar ** sp)
773 { while (isspace(**sp)) (*sp)++; return **sp; }
775 /* Ditto, non-whitespace */
777 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
778 static inline uschar skip_nonwhite(const uschar ** sp)
779 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
782 /******************************************************************************/
784 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
785 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
786 chown(<exim-uid>, <exim-gid>).
788 Probably because the idmapping is broken, misconfigured or set up in
789 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
790 case of misconfiguration, or if there are more such broken systems
791 out, I try to impose as least impact as possible and for now just write
792 a panic log entry pointing to the bug report. You're encouraged to
793 contact the developers, if you experience this issue.
795 fd the file descriptor (or -1 if not valid)
796 name the file name for error messages or for file operations,
801 returns 0 on success, -1 on failure */
804 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
806 return fchown(fd, owner, group)
807 ? exim_chown_failure(fd, name, owner, group) : 0;
811 exim_chown(const uschar *name, uid_t owner, gid_t group)
813 return chown(CCS name, owner, group)
814 ? exim_chown_failure(-1, name, owner, group) : 0;
816 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
818 /******************************************************************************/
819 /* String functions */
821 #if !defined(MACRO_PREDEF)
822 /*************************************************
823 * Copy and save string *
824 *************************************************/
826 /* This function assumes that memcpy() is faster than strcpy().
827 The result is explicitly nul-terminated.
830 static inline uschar *
831 string_copyn_taint_trc(const uschar * s, unsigned len,
832 const void * proto_mem, const char * func, int line)
835 unsigned slen = Ustrlen(s);
836 if (len > slen) len = slen;
837 ss = store_get_3(len + 1, proto_mem, func, line);
843 static inline uschar *
844 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
845 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
847 static inline uschar *
848 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
849 { return string_copyn_taint_trc(s, len, s, func, line); }
850 static inline uschar *
851 string_copy_trc(const uschar * s, const char * func, int line)
852 { return string_copy_taint_trc(s, s, func, line); }
855 /* String-copy functions explicitly setting the taint status */
857 #define string_copyn_taint(s, len, proto_mem) \
858 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
859 #define string_copy_taint(s, proto_mem) \
860 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
862 /* Simple string-copy functions maintaining the taint */
864 #define string_copyn(s, len) \
865 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
866 #define string_copy(s) \
867 string_copy_trc((s), __FUNCTION__, __LINE__)
870 /*************************************************
871 * Copy, lowercase and save string *
872 *************************************************/
875 Argument: string to copy
876 Returns: copy of string in new store, with letters lowercased
879 static inline uschar *
880 string_copylc(const uschar * s)
882 uschar * ss = store_get(Ustrlen(s) + 1, s);
884 while (*s) *p++ = tolower(*s++);
891 /*************************************************
892 * Copy, lowercase, and save string, given length *
893 *************************************************/
895 /* It is assumed the data contains no zeros. A zero is added
900 n number of characters
902 Returns: copy of string in new store, with letters lowercased
905 static inline uschar *
906 string_copynlc(uschar * s, int n)
908 uschar * ss = store_get(n + 1, s);
910 while (n-- > 0) *p++ = tolower(*s++);
916 # ifndef COMPILE_UTILITY
917 /*************************************************
918 * Copy and save string in longterm store *
919 *************************************************/
921 /* This function assumes that memcpy() is faster than strcpy().
923 Argument: string to copy
924 Returns: copy of string in new store
927 static inline uschar *
928 string_copy_perm(const uschar *s, BOOL force_taint)
930 int old_pool = store_pool;
931 int len = Ustrlen(s) + 1;
934 store_pool = POOL_PERM;
935 ss = store_get(len, force_taint ? GET_TAINTED : s);
937 store_pool = old_pool;
944 /* sprintf into a buffer, taint-unchecked */
947 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
949 gstring gs = { .size = siz, .ptr = 0, .s = buf };
952 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
958 /******************************************************************************/
959 /* Growable-string functions */
961 /* Create a growable-string with some preassigned space */
963 #define string_get_tainted(size, proto_mem) \
964 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
966 static inline gstring *
967 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
969 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
970 g->size = size; /*XXX would be good if we could see the actual alloc size */
976 #define string_get(size) \
977 string_get_trc((size), __FUNCTION__, __LINE__)
979 static inline gstring *
980 string_get_trc(unsigned size, const char * func, unsigned line)
982 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
985 /* NUL-terminate the C string in the growable-string, and return it. */
987 static inline uschar *
988 string_from_gstring(gstring * g)
996 len_string_from_gstring(gstring * g, uschar ** sp)
1001 g->s[g->ptr] = '\0';
1011 static inline uschar *
1012 string_copy_from_gstring(gstring * g)
1014 return g ? string_copyn(g->s, g->ptr) : NULL;
1017 static inline unsigned
1018 gstring_length(const gstring * g)
1020 return g ? (unsigned)g->ptr : 0;
1023 static inline uschar
1024 gstring_last_char(gstring * g)
1026 return g->s[g->ptr-1];
1030 gstring_trim(gstring * g, unsigned amount)
1036 gstring_trim_trailing(gstring * g, uschar c)
1038 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1042 gstring_reset(gstring * g)
1048 #define gstring_release_unused(g) \
1049 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1052 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1054 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1058 /* plain string append to a growable-string */
1060 static inline gstring * string_cat(gstring * g, const uschar * s)
1063 static inline gstring *
1064 string_cat(gstring * g, const uschar * s)
1066 return string_catn(g, s, Ustrlen(s));
1070 /* sprintf-append to a growable-string */
1072 #define string_fmt_append(g, fmt, ...) \
1073 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1074 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1076 #define string_fmt_append_f(g, flgs, fmt, ...) \
1077 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1078 flgs, fmt, __VA_ARGS__)
1080 static inline gstring *
1081 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1082 unsigned flags, const char *format, ...)
1085 va_start(ap, format);
1086 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1093 /* Copy the content of a string to tainted memory. The proto_mem arg
1094 will always be tainted, and suitable as a prototype. */
1097 gstring_rebuffer(gstring * g, const void * proto_mem)
1099 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1100 memcpy(s, g->s, g->ptr);
1104 /* Append one gstring to another */
1106 static inline gstring *
1107 gstring_append(gstring * dest, gstring * item)
1109 return item ? string_catn(dest, item->s, item->ptr) : dest;
1113 # ifndef COMPILE_UTILITY
1114 /******************************************************************************/
1115 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1116 for them as the strings we proceed to copy from them meant they could not be
1117 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1118 we do have to take care over marking tainted all copied strings. A separate pool
1119 could be used and would handle that implicitly. */
1121 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1123 static inline dns_answer *
1124 store_get_dns_answer_trc(const uschar * func, unsigned line)
1126 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1129 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1132 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1134 store_free_3(dnsa, CCS func, line);
1138 /* Check for an RR being large enough. Return TRUE iff bad. */
1140 rr_bad_size(const dns_record * rr, size_t minbytes)
1142 return rr->size < minbytes;
1145 /* Check for an RR having further data beyond a given pointer.
1146 Return TRUE iff bad. */
1148 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1150 return rr_bad_size(rr, ptr - rr->data + minbytes);
1153 /******************************************************************************/
1154 /* Routines with knowledge of spool layout */
1157 spool_pname_buf(uschar * buf, int len)
1159 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1162 static inline uschar *
1163 spool_dname(const uschar * purpose, uschar * subdir)
1165 return string_sprintf("%s/%s/%s/%s",
1166 spool_directory, queue_name, purpose, subdir);
1170 static inline uschar *
1171 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1173 return string_sprintf("%s%s%s%s%s",
1176 *subdir ? "/" : "", subdir);
1179 static inline uschar *
1180 spool_sname(const uschar * purpose, const uschar * subdir)
1182 return spool_q_sname(purpose, queue_name, subdir);
1185 static inline uschar *
1186 spool_q_fname(const uschar * purpose, const uschar * q,
1187 const uschar * subdir, const uschar * fname, const uschar * suffix)
1189 return string_sprintf("%s/%s/%s/%s/%s%s",
1190 spool_directory, q, purpose, subdir, fname, suffix);
1193 static inline uschar *
1194 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1195 const uschar * suffix)
1197 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1198 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1199 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1200 uschar * buf = store_get(len, GET_UNTAINTED);
1201 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1202 spool_directory, queue_name, purpose, subdir, fname, suffix);
1205 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1210 set_subdir_str(uschar * subdir_str, const uschar * name,
1211 int search_sequence)
1213 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1214 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1215 subdir_str[1] = '\0';
1218 /******************************************************************************/
1219 /* Message-ID format transition knowlege */
1222 is_new_message_id(const uschar * id)
1224 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1228 is_old_message_id(const uschar * id)
1230 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1233 static inline unsigned
1234 spool_data_start_offset(const uschar * id)
1236 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1237 return SPOOL_DATA_START_OFFSET;
1240 /******************************************************************************/
1241 /* Time calculations */
1243 /* Diff two times (later, earlier) returning diff in 1st arg */
1245 timediff(struct timeval * later, const struct timeval * earlier)
1247 later->tv_sec -= earlier->tv_sec;
1248 if ((later->tv_usec -= earlier->tv_usec) < 0)
1251 later->tv_usec += 1000*1000;
1256 timesince(struct timeval * diff, const struct timeval * then)
1258 gettimeofday(diff, NULL);
1259 timediff(diff, then);
1262 static inline uschar *
1263 string_timediff(const struct timeval * diff)
1265 static uschar buf[16];
1267 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1268 return readconf_printtime((int)diff->tv_sec);
1270 snprintf(CS buf, sizeof(buf), "%u.%03us",
1271 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1276 static inline uschar *
1277 string_timesince(const struct timeval * then)
1279 struct timeval diff;
1280 timesince(&diff, then);
1281 return string_timediff(&diff);
1285 report_time_since(const struct timeval * t0, const uschar * where)
1287 # ifdef MEASURE_TIMING
1288 struct timeval diff;
1289 timesince(&diff, t0);
1290 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1291 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1297 testharness_pause_ms(int millisec)
1299 #ifndef MEASURE_TIMING
1300 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1304 /******************************************************************************/
1305 /* Taint-checked file opens */
1308 exim_open2(const char *pathname, int flags)
1310 if (!is_tainted(pathname)) return open(pathname, flags);
1311 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1316 exim_open(const char *pathname, int flags, mode_t mode)
1318 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1319 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1323 #ifdef EXIM_HAVE_OPENAT
1325 exim_openat(int dirfd, const char *pathname, int flags)
1327 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1328 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1333 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1335 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1336 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1342 static inline FILE *
1343 exim_fopen(const char *pathname, const char *mode)
1345 if (!is_tainted(pathname)) return fopen(pathname, mode);
1346 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1352 exim_opendir(const uschar * name)
1354 if (!is_tainted(name)) return opendir(CCS name);
1355 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1360 /******************************************************************************/
1361 # if !defined(COMPILE_UTILITY)
1363 /* We use the PID of the head process for a connection-id. Note that
1364 this is only for tracking a received connection and what it directly
1365 causes; there is no inttent to describe transport-initiated TCP connections.
1366 The value is intented to be a cookie usable for logging, and we might change
1367 the generator for it at any time. */
1370 set_connection_id(void)
1372 connection_id = string_sprintf("%lu", (u_long)getpid());
1376 /* Process manipulation */
1379 exim_fork(const unsigned char * purpose)
1382 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1383 if ((pid = fork()) == 0)
1385 f.daemon_listen = FALSE;
1386 process_purpose = purpose;
1387 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1391 testharness_pause_ms(100); /* let child work */
1392 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1399 child_open_exim(int * fdptr, const uschar * purpose)
1400 { return child_open_exim_function(fdptr, purpose); }
1403 child_open_exim2(int * fdptr, uschar * sender,
1404 uschar * sender_auth, const uschar * purpose)
1405 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1408 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1409 int *outfdptr, BOOL make_leader, const uschar * purpose)
1410 { return child_open_function(argv, envp, newumask, infdptr,
1411 outfdptr, make_leader, purpose);
1414 /* Return 1 if fd is usable per pollbits, else 0 */
1416 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1418 struct pollfd p = {.fd = fd, .events = pollbits};
1419 return poll(&p, 1, tmo_millisec);
1422 /******************************************************************************/
1423 /* Client-side smtp log string, for debug */
1426 smtp_debug_cmd_log_init(void)
1428 # ifndef DISABLE_CLIENT_CMD_LOG
1429 int old_pool = store_pool;
1430 store_pool = POOL_PERM;
1431 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1432 *client_cmd_log->s = '\0';
1433 store_pool = old_pool;
1439 smtp_debug_cmd(const uschar * buf, int mode)
1441 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1442 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1444 # ifndef DISABLE_CLIENT_CMD_LOG
1446 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1447 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1448 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1449 if (mode == SCMD_BUFFER)
1450 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1451 else if (mode == SCMD_MORE)
1452 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1453 store_pool = old_pool;
1459 /* This might be called both due to callout and then from delivery.
1460 Use memory that will not be released between those phases.
1463 smtp_debug_resp(const uschar * buf)
1465 # ifndef DISABLE_CLIENT_CMD_LOG
1466 int old_pool = store_pool;
1467 store_pool = POOL_PERM;
1468 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1469 buf[3] == '-' ? 4 : 3);
1470 store_pool = old_pool;
1476 smtp_debug_cmd_report(void)
1478 # ifndef DISABLE_CLIENT_CMD_LOG
1479 if (client_cmd_log && *client_cmd_log->s)
1481 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1482 gstring_reset(client_cmd_log);
1485 debug_printf("cmdlog: (unset)\n");
1492 expand_max_rcpt(const uschar * str_max_rcpt)
1494 const uschar * s = expand_cstring(str_max_rcpt);
1496 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1499 /******************************************************************************/
1500 /* Queue-runner operations */
1503 is_onetime_qrun(void)
1505 return qrunners && !qrunners->next && qrunners->interval == 0;
1509 is_multiple_qrun(void)
1511 return qrunners && (qrunners->interval > 0 || qrunners->next);
1515 # endif /* !COMPILE_UTILITY */
1517 /******************************************************************************/
1518 #endif /* !MACRO_PREDEF */
1520 #endif /* _FUNCTIONS_H_ */
1524 /* End of functions.h */