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 extern void assert_no_variables(void *, int, const char *, int);
114 extern int auth_call_pam(const uschar *, uschar **);
115 extern int auth_call_pwcheck(uschar *, uschar **);
116 extern int auth_call_radius(const uschar *, uschar **);
117 extern int auth_call_saslauthd(const uschar *, const uschar *,
118 const uschar *, const uschar *, uschar **);
119 extern int auth_check_serv_cond(auth_instance *);
120 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
121 extern int auth_client_item(void *, auth_instance *, const uschar **,
122 unsigned, int, uschar *, int);
125 extern int auth_get_data(uschar **, const uschar *, int);
126 extern int auth_get_no64_data(uschar **, uschar *);
127 extern int auth_prompt(const uschar *);
128 extern int auth_read_input(const uschar *);
129 extern gstring * auth_show_supported(gstring *);
130 extern uschar *authenticator_current_name(void);
132 extern gstring *authres_smtpauth(gstring *);
134 extern uschar *b64encode(const uschar *, int);
135 extern uschar *b64encode_taint(const uschar *, int, const void *);
136 extern int b64decode(const uschar *, uschar **, const void *);
137 extern int bdat_getc(unsigned);
138 extern uschar *bdat_getbuf(unsigned *);
139 extern BOOL bdat_hasc(void);
140 extern int bdat_ungetc(int);
141 extern void bdat_flush_data(void);
143 extern void bits_clear(unsigned int *, size_t, int *);
144 extern void bits_set(unsigned int *, size_t, int *);
146 extern void cancel_cutthrough_connection(BOOL, const uschar *);
147 extern gstring *cat_file(FILE *, gstring *, uschar *);
148 extern gstring *cat_file_tls(void *, gstring *, uschar *);
149 extern int check_host(void *, const uschar *, const uschar **, uschar **);
150 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
151 extern pid_t child_open_exim_function(int *, const uschar *);
152 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
154 extern pid_t child_open_function(uschar **, uschar **, int,
155 int *, int *, BOOL, const uschar *);
156 extern pid_t child_open_uid(const uschar **, const uschar **, int,
157 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
158 extern BOOL cleanup_environment(void);
159 extern void cutthrough_data_puts(uschar *, int);
160 extern void cutthrough_data_put_nl(void);
161 extern uschar *cutthrough_finaldot(void);
162 extern BOOL cutthrough_flush_send(void);
163 extern BOOL cutthrough_headers_send(void);
164 extern BOOL cutthrough_predata(void);
165 extern void release_cutthrough_connection(const uschar *);
167 extern void daemon_go(void);
168 #ifndef COMPILE_UTILITY
169 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
170 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
173 #ifdef EXPERIMENTAL_DCC
174 extern int dcc_process(uschar **);
177 extern void debug_logging_activate(const uschar *, const uschar *);
178 extern void debug_logging_from_spool(const uschar *);
179 extern void debug_logging_stop(BOOL);
180 extern void debug_print_argv(const uschar **);
181 extern void debug_print_ids(uschar *);
182 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
183 extern void debug_print_string(uschar *);
184 extern void debug_print_tree(const char *, tree_node *);
185 extern void debug_vprintf(int, const char *, va_list);
186 extern void debug_pretrigger_setup(const uschar *);
187 extern void debug_pretrigger_discard(void);
188 extern void debug_print_socket(int);
189 extern void debug_trigger_fire(void);
191 extern void decode_bits(unsigned int *, size_t, int *,
192 const uschar *, bit_table *, int, uschar *, int);
193 extern void delete_pid_file(void);
194 extern void deliver_local(address_item *, BOOL);
195 extern address_item *deliver_make_addr(const uschar *, BOOL);
196 extern void delivery_log(int, address_item *, int, uschar *);
197 extern int deliver_message(const uschar *, BOOL, BOOL);
198 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
199 extern void deliver_set_expansions(address_item *);
200 extern int deliver_split_address(address_item *);
201 extern void deliver_succeeded(address_item *);
203 extern void delivery_re_exec(int);
205 extern void die_tainted(const uschar *, const uschar *, int);
206 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
207 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
208 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
209 extern uschar *dns_build_reverse(const uschar *);
210 extern time_t dns_expire_from_soa(dns_answer *, int);
211 extern void dns_init(BOOL, BOOL, BOOL);
212 extern BOOL dns_is_aa(const dns_answer *);
213 extern BOOL dns_is_secure(const dns_answer *);
214 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
215 extern void dns_pattern_init(void);
216 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
217 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
218 extern uschar *dns_text_type(int);
219 extern void dscp_list_to_stream(FILE *);
220 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
222 extern void enq_end(uschar *);
223 extern BOOL enq_start(uschar *, unsigned);
224 #ifndef DISABLE_EVENT
225 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
226 extern void msg_event_raise(const uschar *, const address_item *);
229 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
230 extern const uschar * exim_errstr(int);
231 extern void exim_exit(int) NORETURN;
232 extern void exim_gettime(struct timeval *);
233 extern void exim_nullstd(void);
234 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
235 extern void exim_underbar_exit(int) NORETURN;
236 extern void exim_wait_tick(struct timeval *, int);
237 extern int exp_bool(address_item *,
238 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
239 const uschar *, BOOL *);
240 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
241 extern uschar *expand_file_big_buffer(const uschar *);
242 extern uschar *expand_string(uschar *); /* public, cannot make const */
243 extern const uschar *expand_string_2(const uschar *, BOOL *);
244 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
245 extern uschar *expand_getkeyed(const uschar *, const uschar *);
247 extern uschar *expand_hide_passwords(uschar * );
248 extern uschar *expand_string_copy(const uschar *);
249 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
250 extern void modify_variable(uschar *, void *);
252 extern BOOL fd_ready(int, time_t);
254 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
255 extern BOOL filter_personal(string_item *, BOOL);
256 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
257 extern BOOL filter_system_interpret(address_item **, uschar **);
259 extern uschar * fn_hdrs_added(void);
260 extern void force_fd(int, int);
262 extern void header_add(int, const char *, ...);
263 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
264 extern int header_checkname(header_line *, BOOL);
265 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
266 extern int host_address_extract_port(uschar *);
267 extern uschar *host_and_ident(BOOL);
268 extern int host_aton(const uschar *, int *);
269 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
270 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
271 extern void host_build_log_info(void);
272 extern void host_build_sender_fullhost(void);
273 extern int host_find_byname(host_item *, const uschar *, int,
274 const uschar **, BOOL);
275 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
276 uschar *, const dnssec_domains *, const uschar **, BOOL *);
277 extern ip_address_item *host_find_interfaces(void);
278 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
279 extern BOOL host_is_tls_on_connect_port(int);
280 extern int host_item_get_port(host_item *);
281 extern void host_mask(int, int *, int);
282 extern int host_name_lookup(void);
283 extern int host_nmtoa(int, const int *, int, uschar *, int);
284 extern uschar *host_ntoa(int, const void *, uschar *, int *);
285 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
287 extern uschar *imap_utf7_encode(uschar *, const uschar *,
288 uschar, uschar *, uschar **);
290 extern void invert_address(uschar *, uschar *);
291 extern int ip_addr(void *, int, const uschar *, int);
292 extern int ip_bind(int, int, uschar *, int);
293 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
294 extern int ip_connectedsocket(int, const uschar *, int, int,
295 int, host_item *, uschar **, const blob *);
296 extern int ip_get_address_family(int);
297 extern void ip_keepalive(int, const uschar *, BOOL);
298 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
299 extern int ip_socket(int, int);
301 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
302 extern int ip_unixsocket(const uschar *, uschar **);
303 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
305 extern int ipv6_nmtoa(int *, uschar *);
307 extern const uschar *local_part_quote(const uschar *);
308 extern int log_open_as_exim(const uschar * const);
309 extern void log_close_all(void);
310 extern const lookup_info * lookup_with_acq_num(unsigned);
311 #ifdef LOOKUP_MODULE_DIR
312 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
316 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
317 extern BOOL macro_read_assignment(uschar *);
318 extern uschar *macros_expand(int, int *, BOOL *);
319 extern void mainlog_close(void);
320 #ifdef WITH_CONTENT_SCAN
321 extern int malware(const uschar *, BOOL, int);
322 extern int malware_in_file(const uschar *);
323 extern void malware_init(void);
324 extern gstring * malware_show_supported(gstring *);
326 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
327 unsigned int *, int, int, const uschar **);
328 extern int match_address_list_basic(const uschar *, const uschar **, int);
329 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
330 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
331 const uschar *, const uschar **);
332 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
333 unsigned int *, int, BOOL, const uschar **);
334 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
337 extern void message_start(void);
338 extern void message_tidyup(void);
339 extern void md5_end(md5 *, const uschar *, int, uschar *);
340 extern void md5_mid(md5 *, const uschar *);
341 extern void md5_start(md5 *);
342 extern void millisleep(int);
343 #ifdef WITH_CONTENT_SCAN
344 struct mime_boundary_context;
345 extern int mime_acl_check(uschar *acl, FILE *f,
346 struct mime_boundary_context *, uschar **, uschar **);
347 extern int mime_decode(const uschar **);
348 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
349 extern int mime_regex(const uschar **, BOOL);
350 extern void mime_set_anomaly(int);
353 extern gstring *misc_mod_authres(gstring *);
354 extern int misc_mod_conn_init(const uschar *, const uschar *);
355 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
356 extern misc_module_info * misc_mod_findonly(const uschar * modname);
357 extern int misc_mod_msg_init(void);
358 extern void misc_mod_smtp_reset(void);
360 extern uschar *moan_check_errorcopy(const uschar *);
361 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
363 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
364 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
365 header_line *, FILE *, uschar *);
366 extern void moan_tell_someone(uschar *, address_item *,
367 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
368 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
369 extern void moan_write_from(FILE *);
370 extern void moan_write_references(FILE *, uschar *);
371 #ifdef LOOKUP_MODULE_DIR
372 //extern void mod_load_check(const uschar *);
374 extern FILE *modefopen(const uschar *, const char *, mode_t);
376 extern int open_cutthrough_connection( address_item * addr );
378 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
380 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
381 const uschar *, const uschar *, error_block **);
382 extern uschar *parse_find_address_end(const uschar *, BOOL);
383 extern const uschar *parse_find_at(const uschar *);
384 extern const uschar *parse_fix_phrase(const uschar *, int);
385 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
386 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
388 extern const uschar *parse_date_time(const uschar *str, time_t *t);
389 extern void priv_drop_temp(const uid_t, const gid_t);
390 extern void priv_restore(void);
392 extern BOOL proxy_protocol_host(void);
393 extern void proxy_protocol_setup(void);
396 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
397 extern void queue_check_only(void);
398 extern unsigned queue_count(void);
399 extern unsigned queue_count_cached(void);
400 extern void queue_list(int, const uschar **, int);
401 #ifndef DISABLE_QUEUE_RAMP
402 extern void queue_notify_daemon(const uschar * hostname);
404 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
406 extern int random_number(int);
407 extern const uschar *rc_to_string(int);
408 extern int rda_interpret(redirect_block *, int, const uschar *,
409 const sieve_block *, const ugid_block *, address_item **,
410 uschar **, error_block **, int *, const uschar *);
411 extern int rda_is_filter(const uschar *);
412 extern BOOL readconf_depends(driver_instance *, uschar *);
413 extern void readconf_driver_init(driver_instance **, driver_info **, int,
414 void *, int, optionlist *, int, const uschar *);
415 extern const uschar *readconf_find_option(void *);
416 extern void readconf_main(BOOL);
417 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
418 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
419 extern uschar *readconf_printtime(int);
420 extern const uschar *readconf_readname(uschar *, int, const uschar *);
421 extern int readconf_readtime(const uschar *, int, BOOL);
422 extern void readconf_rest(void);
423 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
424 extern void readconf_save_config(const uschar *);
425 extern void read_message_body(BOOL);
426 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
427 extern BOOL receive_check_fs(int);
428 extern BOOL receive_check_set_sender(const uschar *);
429 extern BOOL receive_msg(BOOL);
430 extern int_eximarith_t receive_statvfs(BOOL, int *);
431 extern void receive_swallow_smtp(void);
432 extern int recv_fd_from_sock(int);
433 #ifdef WITH_CONTENT_SCAN
434 extern int regex(const uschar **, BOOL);
435 extern void regex_vars_clear(void);
437 extern void regex_at_daemon(const uschar *);
438 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
439 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
440 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
441 pcre2_compile_context *);
442 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
444 extern void retry_add_item(address_item *, const uschar *, int);
445 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
446 const uschar **, const uschar **);
447 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
448 extern const uschar *retry_host_key_build(const host_item *, BOOL,
450 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
451 dbdata_retry *, time_t);
452 extern void retry_update(address_item **, address_item **, address_item **);
453 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
454 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
455 extern header_line *rewrite_header(header_line *,
456 const uschar *, const uschar *,
457 rewrite_rule *, int, BOOL);
458 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
460 extern void rewrite_test(const uschar *);
461 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
463 extern int route_address(address_item *, address_item **, address_item **,
464 address_item **, address_item **, int);
465 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
466 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
467 extern BOOL route_findgroup(uschar *, gid_t *);
468 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
469 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
471 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
472 struct passwd **, uid_t *, uschar **);
473 extern void route_init(void);
474 extern gstring * route_show_supported(gstring *);
475 extern void route_tidyup(void);
476 extern uschar *router_current_name(void);
478 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
480 extern uschar *search_find(void *, const uschar *, const uschar *, int,
481 const uschar *, int, int, int *, const uschar *);
482 extern const lookup_info * search_findtype(const uschar *, int);
483 extern const lookup_info * search_findtype_partial(const uschar *, int *,
484 const uschar **, int *, int *, const uschar **);
485 extern void *search_open(const uschar *, const lookup_info *, int,
487 extern void search_tidyup(void);
488 extern BOOL send_fd_over_socket(int, int);
489 extern uschar *sender_helo_verified_boolstr(void);
490 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
491 extern void sha1_end(hctx *, const uschar *, int, uschar *);
492 extern void sha1_mid(hctx *, const uschar *);
493 extern void sha1_start(hctx *);
494 extern int sieve_interpret(const uschar *, int, const sieve_block *,
495 address_item **, uschar **);
496 extern void sigalrm_handler(int);
497 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
498 extern int smtp_boundsock(smtp_connect_args *);
499 extern void smtp_closedown(uschar *);
500 extern void smtp_command_timeout_exit(void) NORETURN;
501 extern void smtp_command_sigterm_exit(void) NORETURN;
502 extern void smtp_data_timeout_exit(void) NORETURN;
503 extern void smtp_data_sigint_exit(void) NORETURN;
504 extern void smtp_deliver_init(void);
505 extern uschar *smtp_cmd_hist(void);
506 extern int smtp_connect(smtp_connect_args *, const blob *);
507 extern int smtp_feof(void);
508 extern int smtp_ferror(void);
509 extern uschar *smtp_get_connection_info(void);
510 extern BOOL smtp_get_interface(uschar *, int, address_item *,
511 uschar **, uschar *);
512 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
513 extern int smtp_getc(unsigned);
514 extern uschar *smtp_getbuf(unsigned *);
515 extern void smtp_get_cache(unsigned);
516 extern BOOL smtp_hasc(void);
517 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
518 extern void smtp_log_no_mail(void);
519 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
520 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
521 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
522 extern void *smtp_reset(void *);
523 extern void smtp_respond(uschar *, int, BOOL, uschar *);
524 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
525 extern void smtp_port_for_connect(host_item *, int);
526 extern void smtp_send_prohibition_message(int, uschar *);
527 extern int smtp_setup_msg(void);
528 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
529 extern BOOL smtp_start_session(void);
530 extern int smtp_ungetc(int);
531 extern void smtp_verify_feed(const uschar *, unsigned);
532 extern BOOL smtp_verify_helo(void);
533 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
534 #ifdef WITH_CONTENT_SCAN
535 extern int spam(const uschar **);
536 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
538 extern void spool_clear_header_globals(void);
539 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
540 extern int spool_open_datafile(const uschar *);
541 extern int spool_open_temp(uschar *);
542 extern int spool_read_header(uschar *, BOOL, BOOL);
543 extern uschar *spool_sender_from_msgid(const uschar *);
544 extern int spool_write_header(const uschar *, int, uschar **);
545 extern int stdin_getc(unsigned);
546 extern int stdin_feof(void);
547 extern int stdin_ferror(void);
548 extern BOOL stdin_hasc(void);
549 extern int stdin_ungetc(int);
551 extern void stackdump(void);
552 extern void store_exit(void);
553 extern void store_init(void);
554 extern void store_writeprotect(int);
556 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
557 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
558 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
559 extern gstring *string_append_listele_fmt(gstring *, uschar, const char *, ...) WARN_UNUSED_RESULT;
560 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
561 extern uschar *string_base62_32(unsigned long int);
562 extern uschar *string_base62_64(unsigned long int);
563 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
564 extern int string_compare_by_pointer(const void *, const void *);
565 extern uschar *string_copy_dnsdomain(uschar *);
566 extern uschar *string_copy_malloc(const uschar *);
567 extern uschar *string_dequote(const uschar **);
568 extern uschar *string_format_size(int, uschar *);
569 extern int string_interpret_escape(const uschar **);
570 extern int string_is_ip_address(const uschar *, int *);
571 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
573 extern BOOL string_is_utf8(const uschar *);
575 extern const uschar *string_printing2(const uschar *, int);
576 extern uschar *string_split_message(uschar *);
577 extern uschar *string_unprinting(uschar *);
579 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
580 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
581 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
582 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
583 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
586 #define string_format(buf, siz, fmt, ...) \
587 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
588 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
589 const char *, ...) ALMOST_PRINTF(5,6);
591 #define string_vformat(g, flgs, fmt, ap) \
592 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
593 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
594 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
595 unsigned, unsigned, const char *, va_list);
597 #define string_open_failed(fmt, ...) \
598 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
599 extern uschar *string_open_failed_trc(const uschar *, unsigned,
600 const char *, ...) PRINTF_FUNCTION(3,4);
602 #define string_nextinlist(lp, sp, b, l) \
603 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
604 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
605 const uschar * func, int line);
607 extern int strcmpic(const uschar *, const uschar *);
608 extern int strncmpic(const uschar *, const uschar *, int);
609 extern uschar *strstric(uschar *, uschar *, BOOL);
610 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
612 extern int test_harness_fudged_queue_time(int);
613 extern void tcp_init(void);
614 #ifdef EXIM_TFO_PROBE
615 extern void tfo_probe(void);
617 extern void tls_modify_variables(tls_support *);
618 extern uschar *tod_stamp(int);
620 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
622 extern uschar *transport_current_name(void);
623 extern void transport_do_pass_socket(const uschar *, const uschar *,
624 const uschar *, uschar *, int);
625 extern void transport_init(void);
626 extern const uschar *transport_rcpt_address(address_item *, BOOL);
627 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
628 unsigned, int, address_item *, const uschar *, uschar **);
629 extern void transport_update_waiting(host_item *, const uschar *);
630 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
631 extern void transport_write_reset(int);
632 extern BOOL transport_write_string(int, const char *, ...);
633 extern BOOL transport_headers_send(transport_ctx *,
634 BOOL (*)(transport_ctx *, const uschar *, int));
635 extern gstring * transport_show_supported(gstring *);
636 extern BOOL transport_write_message(transport_ctx *, int);
637 extern void tree_add_duplicate(const uschar *, address_item *);
638 extern void tree_add_nonrecipient(const uschar *);
639 extern void tree_add_unusable(const host_item *);
640 extern void tree_dup(tree_node **, tree_node *);
641 extern int tree_insertnode(tree_node **, tree_node *);
642 extern tree_node *tree_search(tree_node *, const uschar *);
643 extern void tree_write(tree_node *, FILE *);
644 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
646 #ifdef WITH_CONTENT_SCAN
647 extern void unspool_mbox(void);
650 extern gstring *utf8_version_report(gstring *);
653 extern int vaguely_random_number(int);
655 extern int vaguely_random_number_fallback(int);
657 extern int verify_address(address_item *, FILE *, int, int, int, int,
658 uschar *, uschar *, BOOL *);
659 extern int verify_check_dnsbl(int, const uschar **, uschar **);
660 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
661 uschar *, uschar *, int, int *);
662 extern int verify_check_headers(uschar **);
663 extern int verify_check_header_names_ascii(uschar **);
664 extern int verify_check_host(uschar **);
665 extern int verify_check_notblind(BOOL);
666 extern int verify_check_given_host(const uschar **, const host_item *);
667 extern int verify_check_this_host(const uschar **, unsigned int *,
668 const uschar*, const uschar *, const uschar **);
669 extern address_item *verify_checked_sender(const uschar *);
670 extern void verify_get_ident(int);
671 extern void verify_quota(uschar *);
672 extern int verify_quota_call(const uschar *, int, int, uschar **);
673 extern BOOL verify_sender(int *, uschar **);
674 extern BOOL verify_sender_preliminary(int *, uschar **);
675 extern void version_init(void);
677 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
678 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
679 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
681 #ifdef EXPERIMENTAL_XCLIENT
682 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
683 extern gstring * xclient_smtp_advertise_str(gstring *);
685 extern uschar *xtextencode(uschar *, int);
686 extern int xtextdecode(uschar *, uschar **);
689 /******************************************************************************/
690 /* Predicate: if an address is in a tainted pool.
691 By extension, a variable pointing to this address is tainted.
695 is_tainted(const void * p)
697 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
701 extern BOOL is_tainted_fn(const void *);
702 return is_tainted_fn(p);
707 is_incompatible(const void * old, const void * new)
709 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
713 extern BOOL is_incompatible_fn(const void *, const void *);
714 return is_incompatible_fn(old, new);
718 /******************************************************************************/
719 /* String functions */
720 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
722 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
723 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
725 return US strcat(CS dst, CCS src);
727 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
729 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
730 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
732 return US strcpy(CS dst, CCS src);
734 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
736 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
737 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
739 return US strncat(CS dst, CCS src, n);
741 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
743 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
744 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
746 return US strncpy(CS dst, CCS src, n);
748 /*XXX will likely need unchecked copy also */
751 /* Advance the string pointer given over any whitespace.
752 Return the next char as there's enough places using it to be useful. */
754 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
756 static inline uschar skip_whitespace(const uschar ** sp)
757 { while (isspace(**sp)) (*sp)++; return **sp; }
759 /* Ditto, non-whitespace */
761 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
762 static inline uschar skip_nonwhite(const uschar ** sp)
763 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
766 /******************************************************************************/
768 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
769 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
770 chown(<exim-uid>, <exim-gid>).
772 Probably because the idmapping is broken, misconfigured or set up in
773 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
774 case of misconfiguration, or if there are more such broken systems
775 out, I try to impose as least impact as possible and for now just write
776 a panic log entry pointing to the bug report. You're encouraged to
777 contact the developers, if you experience this issue.
779 fd the file descriptor (or -1 if not valid)
780 name the file name for error messages or for file operations,
785 returns 0 on success, -1 on failure */
788 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
790 return fchown(fd, owner, group)
791 ? exim_chown_failure(fd, name, owner, group) : 0;
795 exim_chown(const uschar *name, uid_t owner, gid_t group)
797 return chown(CCS name, owner, group)
798 ? exim_chown_failure(-1, name, owner, group) : 0;
800 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
802 /******************************************************************************/
803 /* String functions */
805 #if !defined(MACRO_PREDEF)
806 /*************************************************
807 * Copy and save string *
808 *************************************************/
810 /* This function assumes that memcpy() is faster than strcpy().
811 The result is explicitly nul-terminated.
814 static inline uschar *
815 string_copyn_taint_trc(const uschar * s, unsigned len,
816 const void * proto_mem, const char * func, int line)
819 unsigned slen = Ustrlen(s);
820 if (len > slen) len = slen;
821 ss = store_get_3(len + 1, proto_mem, func, line);
827 static inline uschar *
828 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
829 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
831 static inline uschar *
832 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
833 { return string_copyn_taint_trc(s, len, s, func, line); }
834 static inline uschar *
835 string_copy_trc(const uschar * s, const char * func, int line)
836 { return string_copy_taint_trc(s, s, func, line); }
839 /* String-copy functions explicitly setting the taint status */
841 #define string_copyn_taint(s, len, proto_mem) \
842 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
843 #define string_copy_taint(s, proto_mem) \
844 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
846 /* Simple string-copy functions maintaining the taint */
848 #define string_copyn(s, len) \
849 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
850 #define string_copy(s) \
851 string_copy_trc((s), __FUNCTION__, __LINE__)
854 /*************************************************
855 * Copy, lowercase and save string *
856 *************************************************/
859 Argument: string to copy
860 Returns: copy of string in new store, with letters lowercased
863 static inline uschar *
864 string_copylc(const uschar * s)
866 uschar * ss = store_get(Ustrlen(s) + 1, s);
868 while (*s) *p++ = tolower(*s++);
875 /*************************************************
876 * Copy, lowercase, and save string, given length *
877 *************************************************/
879 /* It is assumed the data contains no zeros. A zero is added
884 n number of characters
886 Returns: copy of string in new store, with letters lowercased
889 static inline uschar *
890 string_copynlc(uschar * s, int n)
892 uschar * ss = store_get(n + 1, s);
894 while (n-- > 0) *p++ = tolower(*s++);
900 # ifndef COMPILE_UTILITY
901 /*************************************************
902 * Copy and save string in longterm store *
903 *************************************************/
905 /* This function assumes that memcpy() is faster than strcpy().
907 Argument: string to copy
908 Returns: copy of string in new store
911 static inline uschar *
912 string_copy_perm(const uschar *s, BOOL force_taint)
914 int old_pool = store_pool;
915 int len = Ustrlen(s) + 1;
918 store_pool = POOL_PERM;
919 ss = store_get(len, force_taint ? GET_TAINTED : s);
921 store_pool = old_pool;
928 /* sprintf into a buffer, taint-unchecked */
931 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
933 gstring gs = { .size = siz, .ptr = 0, .s = buf };
936 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
942 /******************************************************************************/
943 /* Growable-string functions */
945 /* Create a growable-string with some preassigned space */
947 #define string_get_tainted(size, proto_mem) \
948 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
950 static inline gstring *
951 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
953 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
954 g->size = size; /*XXX would be good if we could see the actual alloc size */
960 #define string_get(size) \
961 string_get_trc((size), __FUNCTION__, __LINE__)
963 static inline gstring *
964 string_get_trc(unsigned size, const char * func, unsigned line)
966 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
969 /* NUL-terminate the C string in the growable-string, and return it. */
971 static inline uschar *
972 string_from_gstring(gstring * g)
980 len_string_from_gstring(gstring * g, uschar ** sp)
995 static inline uschar *
996 string_copy_from_gstring(gstring * g)
998 return g ? string_copyn(g->s, g->ptr) : NULL;
1001 static inline unsigned
1002 gstring_length(const gstring * g)
1004 return g ? (unsigned)g->ptr : 0;
1007 static inline uschar
1008 gstring_last_char(gstring * g)
1010 return g->s[g->ptr-1];
1014 gstring_trim(gstring * g, unsigned amount)
1020 gstring_trim_trailing(gstring * g, uschar c)
1022 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1026 gstring_reset(gstring * g)
1032 #define gstring_release_unused(g) \
1033 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1036 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1038 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1042 /* plain string append to a growable-string */
1044 static inline gstring * string_cat(gstring * g, const uschar * s)
1047 static inline gstring *
1048 string_cat(gstring * g, const uschar * s)
1050 return string_catn(g, s, Ustrlen(s));
1054 /* sprintf-append to a growable-string */
1056 #define string_fmt_append(g, fmt, ...) \
1057 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1058 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1060 #define string_fmt_append_f(g, flgs, fmt, ...) \
1061 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1062 flgs, fmt, __VA_ARGS__)
1064 static inline gstring *
1065 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1066 unsigned flags, const char *format, ...)
1069 va_start(ap, format);
1070 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1077 /* Copy the content of a string to tainted memory. The proto_mem arg
1078 will always be tainted, and suitable as a prototype. */
1081 gstring_rebuffer(gstring * g, const void * proto_mem)
1083 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1084 memcpy(s, g->s, g->ptr);
1088 /* Append one gstring to another */
1090 static inline gstring *
1091 gstring_append(gstring * dest, gstring * item)
1093 return item ? string_catn(dest, item->s, item->ptr) : dest;
1097 # ifndef COMPILE_UTILITY
1098 /******************************************************************************/
1099 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1100 for them as the strings we proceed to copy from them meant they could not be
1101 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1102 we do have to take care over marking tainted all copied strings. A separate pool
1103 could be used and would handle that implicitly. */
1105 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1107 static inline dns_answer *
1108 store_get_dns_answer_trc(const uschar * func, unsigned line)
1110 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1113 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1116 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1118 store_free_3(dnsa, CCS func, line);
1122 /* Check for an RR being large enough. Return TRUE iff bad. */
1124 rr_bad_size(const dns_record * rr, size_t minbytes)
1126 return rr->size < minbytes;
1129 /* Check for an RR having further data beyond a given pointer.
1130 Return TRUE iff bad. */
1132 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1134 return rr_bad_size(rr, ptr - rr->data + minbytes);
1137 /******************************************************************************/
1138 /* Routines with knowledge of spool layout */
1141 spool_pname_buf(uschar * buf, int len)
1143 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1146 static inline uschar *
1147 spool_dname(const uschar * purpose, uschar * subdir)
1149 return string_sprintf("%s/%s/%s/%s",
1150 spool_directory, queue_name, purpose, subdir);
1154 static inline uschar *
1155 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1157 return string_sprintf("%s%s%s%s%s",
1160 *subdir ? "/" : "", subdir);
1163 static inline uschar *
1164 spool_sname(const uschar * purpose, const uschar * subdir)
1166 return spool_q_sname(purpose, queue_name, subdir);
1169 static inline uschar *
1170 spool_q_fname(const uschar * purpose, const uschar * q,
1171 const uschar * subdir, const uschar * fname, const uschar * suffix)
1173 return string_sprintf("%s/%s/%s/%s/%s%s",
1174 spool_directory, q, purpose, subdir, fname, suffix);
1177 static inline uschar *
1178 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1179 const uschar * suffix)
1181 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1182 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1183 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1184 uschar * buf = store_get(len, GET_UNTAINTED);
1185 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1186 spool_directory, queue_name, purpose, subdir, fname, suffix);
1189 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1194 set_subdir_str(uschar * subdir_str, const uschar * name,
1195 int search_sequence)
1197 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1198 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1199 subdir_str[1] = '\0';
1202 /******************************************************************************/
1203 /* Message-ID format transition knowlege */
1206 is_new_message_id(const uschar * id)
1208 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1212 is_old_message_id(const uschar * id)
1214 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1217 static inline unsigned
1218 spool_data_start_offset(const uschar * id)
1220 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1221 return SPOOL_DATA_START_OFFSET;
1224 /******************************************************************************/
1225 /* Time calculations */
1227 /* Diff two times (later, earlier) returning diff in 1st arg */
1229 timediff(struct timeval * later, const struct timeval * earlier)
1231 later->tv_sec -= earlier->tv_sec;
1232 if ((later->tv_usec -= earlier->tv_usec) < 0)
1235 later->tv_usec += 1000*1000;
1240 timesince(struct timeval * diff, const struct timeval * then)
1242 gettimeofday(diff, NULL);
1243 timediff(diff, then);
1246 static inline uschar *
1247 string_timediff(const struct timeval * diff)
1249 static uschar buf[16];
1251 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1252 return readconf_printtime((int)diff->tv_sec);
1254 snprintf(CS buf, sizeof(buf), "%u.%03us",
1255 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1260 static inline uschar *
1261 string_timesince(const struct timeval * then)
1263 struct timeval diff;
1264 timesince(&diff, then);
1265 return string_timediff(&diff);
1269 report_time_since(const struct timeval * t0, const uschar * where)
1271 # ifdef MEASURE_TIMING
1272 struct timeval diff;
1273 timesince(&diff, t0);
1274 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1275 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1281 testharness_pause_ms(int millisec)
1283 #ifndef MEASURE_TIMING
1284 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1288 /******************************************************************************/
1289 /* Taint-checked file opens */
1292 exim_open2(const char *pathname, int flags)
1294 if (!is_tainted(pathname)) return open(pathname, flags);
1295 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1300 exim_open(const char *pathname, int flags, mode_t mode)
1302 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1303 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1307 #ifdef EXIM_HAVE_OPENAT
1309 exim_openat(int dirfd, const char *pathname, int flags)
1311 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1312 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1317 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1319 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1320 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1326 static inline FILE *
1327 exim_fopen(const char *pathname, const char *mode)
1329 if (!is_tainted(pathname)) return fopen(pathname, mode);
1330 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1336 exim_opendir(const uschar * name)
1338 if (!is_tainted(name)) return opendir(CCS name);
1339 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1344 /******************************************************************************/
1345 # if !defined(COMPILE_UTILITY)
1347 /* We use the PID of the head process for a connection-id. Note that
1348 this is only for tracking a received connection and what it directly
1349 causes; there is no inttent to describe transport-initiated TCP connections.
1350 The value is intented to be a cookie usable for logging, and we might change
1351 the generator for it at any time. */
1354 set_connection_id(void)
1356 connection_id = string_sprintf("%lu", (u_long)getpid());
1360 /* Process manipulation */
1363 exim_fork(const unsigned char * purpose)
1366 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1367 if ((pid = fork()) == 0)
1369 f.daemon_listen = FALSE;
1370 process_purpose = purpose;
1371 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1375 testharness_pause_ms(100); /* let child work */
1376 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1383 child_open_exim(int * fdptr, const uschar * purpose)
1384 { return child_open_exim_function(fdptr, purpose); }
1387 child_open_exim2(int * fdptr, uschar * sender,
1388 uschar * sender_auth, const uschar * purpose)
1389 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1392 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1393 int *outfdptr, BOOL make_leader, const uschar * purpose)
1394 { return child_open_function(argv, envp, newumask, infdptr,
1395 outfdptr, make_leader, purpose);
1398 /* Return 1 if fd is usable per pollbits, else 0 */
1400 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1402 struct pollfd p = {.fd = fd, .events = pollbits};
1403 return poll(&p, 1, tmo_millisec);
1406 /******************************************************************************/
1407 /* Client-side smtp log string, for debug */
1410 smtp_debug_cmd_log_init(void)
1412 # ifndef DISABLE_CLIENT_CMD_LOG
1413 int old_pool = store_pool;
1414 store_pool = POOL_PERM;
1415 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1416 *client_cmd_log->s = '\0';
1417 store_pool = old_pool;
1423 smtp_debug_cmd(const uschar * buf, int mode)
1425 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1426 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1428 # ifndef DISABLE_CLIENT_CMD_LOG
1430 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1431 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1432 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1433 if (mode == SCMD_BUFFER)
1434 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1435 else if (mode == SCMD_MORE)
1436 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1437 store_pool = old_pool;
1443 /* This might be called both due to callout and then from delivery.
1444 Use memory that will not be released between those phases.
1447 smtp_debug_resp(const uschar * buf)
1449 # ifndef DISABLE_CLIENT_CMD_LOG
1450 int old_pool = store_pool;
1451 store_pool = POOL_PERM;
1452 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1453 buf[3] == '-' ? 4 : 3);
1454 store_pool = old_pool;
1460 smtp_debug_cmd_report(void)
1462 # ifndef DISABLE_CLIENT_CMD_LOG
1463 if (client_cmd_log && *client_cmd_log->s)
1465 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1466 gstring_reset(client_cmd_log);
1469 debug_printf("cmdlog: (unset)\n");
1476 expand_max_rcpt(const uschar * str_max_rcpt)
1478 const uschar * s = expand_cstring(str_max_rcpt);
1480 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1483 /******************************************************************************/
1484 /* Queue-runner operations */
1487 is_onetime_qrun(void)
1489 return qrunners && !qrunners->next && qrunners->interval == 0;
1493 is_multiple_qrun(void)
1495 return qrunners && (qrunners->interval > 0 || qrunners->next);
1499 # endif /* !COMPILE_UTILITY */
1501 /******************************************************************************/
1502 #endif /* !MACRO_PREDEF */
1504 #endif /* _FUNCTIONS_H_ */
1508 /* End of functions.h */