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. */
24 std_dh_prime_default(void);
26 std_dh_prime_named(const uschar *);
28 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
29 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
30 extern uschar * tls_cert_issuer(void *, uschar * mod);
31 extern uschar * tls_cert_not_before(void *, uschar * mod);
32 extern uschar * tls_cert_not_after(void *, uschar * mod);
33 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
34 extern uschar * tls_cert_serial_number(void *, uschar * mod);
35 extern uschar * tls_cert_signature(void *, uschar * mod);
36 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
37 extern uschar * tls_cert_subject(void *, uschar * mod);
38 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
39 extern uschar * tls_cert_version(void *, uschar * mod);
41 extern uschar * tls_cert_der_b64(void * cert);
42 extern uschar * tls_cert_fprt_md5(void *);
43 extern uschar * tls_cert_fprt_sha1(void *);
44 extern uschar * tls_cert_fprt_sha256(void *);
46 extern void tls_clean_env(void);
47 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
48 void *, tls_support *, uschar **);
49 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
50 const uschar *, uschar **);
51 extern void tls_client_creds_reload(BOOL);
53 extern void tls_close(void *, int);
54 extern BOOL tls_could_getc(void);
55 extern void tls_daemon_init(void);
56 extern int tls_daemon_tick(void);
57 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
58 extern BOOL tls_export_cert(uschar *, size_t, void *);
59 extern int tls_feof(void);
60 extern int tls_ferror(void);
61 extern uschar *tls_field_from_dn(uschar *, const uschar *);
62 extern void tls_free_cert(void **);
63 extern int tls_getc(unsigned);
64 extern uschar *tls_getbuf(unsigned *);
65 extern void tls_get_cache(unsigned);
66 extern BOOL tls_hasc(void);
67 extern BOOL tls_import_cert(const uschar *, void **);
68 extern void tls_state_in_to_out(int, const uschar *, int);
69 extern void tls_state_out_to_in(int, const uschar *, int);
70 extern BOOL tls_is_name_for_cert(const uschar *, void *);
72 extern BOOL tls_openssl_options_parse(uschar *, long *);
74 extern int tls_read(void *, uschar *, size_t);
75 extern int tls_server_start(uschar **);
76 extern void tls_shutdown_wr(void *);
77 extern BOOL tls_smtp_buffered(void);
78 extern int tls_ungetc(int);
79 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
80 extern void tls_watch_discard_event(int);
81 extern void tls_watch_invalidate(void);
83 extern int tls_write(void *, const uschar *, size_t, BOOL);
84 extern uschar *tls_validate_require_cipher(void);
85 extern gstring *tls_version_report(gstring *);
88 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
91 #endif /*DISABLE_TLS*/
94 /* Everything else... */
96 extern acl_block *acl_read(uschar *(*)(void), uschar **);
97 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
98 extern uschar *acl_current_verb(void);
99 extern int acl_eval(int, uschar *, uschar **, uschar **);
100 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
102 extern tree_node *acl_var_create(uschar *);
103 extern void acl_var_write(uschar *, uschar *, void *);
104 extern void add_driver_info(driver_info **, const driver_info *, size_t);
106 extern void assert_no_variables(void *, int, const char *, int);
107 extern void atrn_handle_customer(void);
108 extern int atrn_handle_provider(uschar **, uschar **);
110 extern int auth_call_pwcheck(uschar *, uschar **);
111 extern int auth_call_saslauthd(const uschar *, const uschar *,
112 const uschar *, const uschar *, uschar **);
113 extern int auth_check_serv_cond(auth_instance *);
114 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
115 extern int auth_client_item(void *, auth_instance *, const uschar **,
116 unsigned, int, uschar *, int);
118 extern int auth_get_data(uschar **, const uschar *, int);
119 extern int auth_get_no64_data(uschar **, uschar *);
120 extern int auth_prompt(const uschar *);
121 extern int auth_read_input(const uschar *);
122 extern gstring * auth_show_supported(gstring *);
123 extern uschar *authenticator_current_name(void);
125 extern gstring *authres_smtpauth(gstring *);
127 extern uschar *b64encode(const uschar *, int);
128 extern uschar *b64encode_taint(const uschar *, int, const void *);
129 extern int b64decode(const uschar *, uschar **, const void *);
130 extern int bdat_getc(unsigned);
131 extern uschar *bdat_getbuf(unsigned *);
132 extern BOOL bdat_hasc(void);
133 extern int bdat_ungetc(int);
134 extern void bdat_flush_data(void);
136 extern void bits_clear(unsigned int *, size_t, int *);
137 extern void bits_set(unsigned int *, size_t, int *);
139 extern void cancel_cutthrough_connection(BOOL, const uschar *);
140 extern gstring *cat_file(FILE *, gstring *, uschar *);
141 extern gstring *cat_file_tls(void *, gstring *, uschar *);
142 extern int check_host(void *, const uschar *, const uschar **, uschar **);
143 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
144 extern pid_t child_open_exim_function(int *, const uschar *);
145 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
147 extern pid_t child_open_function(uschar **, uschar **, int,
148 int *, int *, BOOL, const uschar *);
149 extern pid_t child_open_uid(const uschar **, const uschar **, int,
150 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
151 extern BOOL cleanup_environment(void);
152 extern void cutthrough_data_puts(uschar *, int);
153 extern void cutthrough_data_put_nl(void);
154 extern uschar *cutthrough_finaldot(void);
155 extern BOOL cutthrough_flush_send(void);
156 extern BOOL cutthrough_headers_send(void);
157 extern BOOL cutthrough_predata(void);
158 extern void release_cutthrough_connection(const uschar *);
160 extern void daemon_go(void);
161 #ifndef COMPILE_UTILITY
162 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
163 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
166 #ifdef EXPERIMENTAL_DCC
167 extern int dcc_process(uschar **);
170 extern void debug_logging_activate(const uschar *, const uschar *);
171 extern void debug_logging_from_spool(const uschar *);
172 extern void debug_logging_stop(BOOL);
173 extern void debug_print_argv(const uschar **);
174 extern void debug_print_ids(uschar *);
175 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
176 extern void debug_print_string(uschar *);
177 extern void debug_print_tree(const char *, tree_node *);
178 extern void debug_vprintf(int, const char *, va_list);
179 extern void debug_pretrigger_setup(const uschar *);
180 extern void debug_pretrigger_discard(void);
181 extern void debug_print_socket(int);
182 extern void debug_trigger_fire(void);
184 extern void decode_bits(unsigned int *, size_t, int *,
185 const uschar *, bit_table *, int, uschar *, int);
186 extern void delete_pid_file(void);
187 extern void deliver_local(address_item *, BOOL);
188 extern address_item *deliver_make_addr(const uschar *, BOOL);
189 extern void delivery_log(int, address_item *, int, uschar *);
190 extern int deliver_message(const uschar *, BOOL, BOOL);
191 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
192 extern void deliver_set_expansions(address_item *);
193 extern int deliver_split_address(address_item *);
194 extern void deliver_succeeded(address_item *);
196 extern void delivery_re_exec(int);
198 extern void die_tainted(const uschar *, const uschar *, int);
199 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
200 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
201 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
202 extern uschar *dns_build_reverse(const uschar *);
203 extern time_t dns_expire_from_soa(dns_answer *, int);
204 extern void dns_init(BOOL, BOOL, BOOL);
205 extern BOOL dns_is_aa(const dns_answer *);
206 extern BOOL dns_is_secure(const dns_answer *);
207 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
208 extern void dns_pattern_init(void);
209 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
210 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
211 extern uschar *dns_text_type(int);
212 extern void dscp_list_to_stream(FILE *);
213 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
215 extern void enq_end(uschar *);
216 extern BOOL enq_start(uschar *, unsigned);
217 #ifndef DISABLE_EVENT
218 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
219 extern void msg_event_raise(const uschar *, const address_item *);
222 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
223 extern const uschar * exim_errstr(int);
224 extern void exim_exit(int) NORETURN;
225 extern void exim_gettime(struct timeval *);
226 extern void exim_nullstd(void);
227 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
228 extern void exim_underbar_exit(int) NORETURN;
229 extern void exim_wait_tick(struct timeval *, int);
230 extern int exp_bool(address_item *,
231 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
232 const uschar *, BOOL *);
233 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
234 extern uschar *expand_file_big_buffer(const uschar *);
235 extern uschar *expand_string(uschar *); /* public, cannot make const */
236 extern const uschar *expand_string_2(const uschar *, BOOL *);
237 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
238 extern uschar *expand_getkeyed(const uschar *, const uschar *);
240 extern uschar *expand_hide_passwords(uschar * );
241 extern uschar *expand_string_copy(const uschar *);
242 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
243 extern void modify_variable(uschar *, void *);
245 extern BOOL fd_ready(int, time_t);
246 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
248 extern uschar * fn_hdrs_added(void);
249 extern void force_fd(int, int);
251 extern void header_add(int, const char *, ...);
252 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
253 extern int header_checkname(header_line *, BOOL);
254 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
255 extern int host_address_extract_port(uschar *);
256 extern uschar *host_and_ident(BOOL);
257 extern int host_aton(const uschar *, int *);
258 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
259 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
260 extern void host_build_log_info(void);
261 extern void host_build_sender_fullhost(void);
262 extern int host_find_byname(host_item *, const uschar *, int,
263 const uschar **, BOOL);
264 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
265 uschar *, const dnssec_domains *, const uschar **, BOOL *);
266 extern ip_address_item *host_find_interfaces(void);
267 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
268 extern BOOL host_is_tls_on_connect_port(int);
269 extern int host_item_get_port(host_item *);
270 extern void host_mask(int, int *, int);
271 extern int host_name_lookup(void);
272 extern int host_nmtoa(int, const int *, int, uschar *, int);
273 extern uschar *host_ntoa(int, const void *, uschar *, int *);
274 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
276 extern uschar *imap_utf7_encode(uschar *, const uschar *,
277 uschar, uschar *, uschar **);
279 extern void invert_address(uschar *, uschar *);
280 extern int ip_addr(void *, int, const uschar *, int);
281 extern int ip_bind(int, int, uschar *, int);
282 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
283 extern int ip_connectedsocket(int, const uschar *, int, int,
284 int, host_item *, uschar **, const blob *);
285 extern int ip_get_address_family(int);
286 extern void ip_keepalive(int, const uschar *, BOOL);
287 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
288 extern int ip_socket(int, int);
290 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
291 extern int ip_unixsocket(const uschar *, uschar **);
292 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
294 extern int ipv6_nmtoa(int *, uschar *);
296 extern const uschar *local_part_quote(const uschar *);
297 extern int log_open_as_exim(const uschar * const);
298 extern void log_close_all(void);
299 extern const lookup_info * lookup_with_acq_num(unsigned);
300 #ifdef LOOKUP_MODULE_DIR
301 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
305 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
306 extern BOOL macro_read_assignment(uschar *);
307 extern uschar *macros_expand(int, int *, BOOL *);
308 extern void mainlog_close(void);
309 #ifdef WITH_CONTENT_SCAN
310 extern int malware(const uschar *, BOOL, int);
311 extern int malware_in_file(const uschar *);
312 extern void malware_init(void);
313 extern gstring * malware_show_supported(gstring *);
315 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
316 unsigned int *, int, int, const uschar **);
317 extern int match_address_list_basic(const uschar *, const uschar **, int);
318 extern int match_check_list(const uschar * const *, int, tree_node **,
319 unsigned int **, int(*)(void *, const uschar *,
320 const uschar **, uschar **),
321 void *, int, const uschar *, const uschar **);
322 extern int match_isinlist(const uschar *, const uschar * const *, int,
323 tree_node **, unsigned int *, int, BOOL, const uschar **);
324 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
326 extern uschar matchlist_parse_sep(const uschar **);
328 extern void message_start(void);
329 extern void message_tidyup(void);
330 extern void md5_end(md5 *, const uschar *, int, uschar *);
331 extern void md5_mid(md5 *, const uschar *);
332 extern void md5_start(md5 *);
333 extern void millisleep(int);
334 #ifdef WITH_CONTENT_SCAN
335 struct mime_boundary_context;
336 extern int mime_acl_check(uschar *acl, FILE *f,
337 struct mime_boundary_context *, uschar **, uschar **);
338 extern int mime_decode(const uschar **);
339 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
340 extern int mime_regex(const uschar **, BOOL);
341 extern void mime_set_anomaly(int);
344 extern gstring *misc_mod_authres(gstring *);
345 extern int misc_mod_conn_init(const uschar *, const uschar *);
346 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
347 extern misc_module_info * misc_mod_findonly(const uschar * modname);
348 extern int misc_mod_msg_init(void);
349 extern void misc_mod_smtp_reset(void);
351 extern uschar *moan_check_errorcopy(const uschar *);
352 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
354 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
355 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
356 header_line *, FILE *, uschar *);
357 extern void moan_tell_someone(uschar *, address_item *,
358 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
359 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
360 extern void moan_write_from(FILE *);
361 extern void moan_write_references(FILE *, uschar *);
362 #ifdef LOOKUP_MODULE_DIR
363 //extern void mod_load_check(const uschar *);
365 extern FILE *modefopen(const uschar *, const char *, mode_t);
367 extern int open_cutthrough_connection( address_item * addr );
369 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
371 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
372 const uschar *, const uschar *, error_block **);
373 extern uschar *parse_find_address_end(const uschar *, BOOL);
374 extern const uschar *parse_find_at(const uschar *);
375 extern const uschar *parse_fix_phrase(const uschar *, int);
376 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
377 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
379 extern const uschar *parse_date_time(const uschar *str, time_t *t);
380 extern void priv_drop_temp(const uid_t, const gid_t);
381 extern void priv_restore(void);
383 extern BOOL proxy_protocol_host(void);
384 extern void proxy_protocol_setup(void);
387 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
388 extern void queue_check_only(void);
389 extern unsigned queue_count(void);
390 extern unsigned queue_count_cached(void);
391 extern void queue_list(int, const uschar **, int);
392 #ifndef DISABLE_QUEUE_RAMP
393 extern void queue_notify_daemon(const uschar * hostname);
395 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
397 extern int random_number(int);
398 extern const uschar *rc_to_string(int);
399 extern int rda_interpret(redirect_block *, int, const uschar *,
400 const sieve_block *, const ugid_block *, address_item **,
401 uschar **, error_block **, int *, const uschar *);
402 extern int rda_is_filter(const uschar *);
403 extern BOOL readconf_depends(driver_instance *, uschar *);
404 extern void readconf_driver_init(driver_instance **, driver_info **, int,
405 void *, int, optionlist *, int, const uschar *);
406 extern const uschar *readconf_find_option(const void *);
407 extern void readconf_main(BOOL);
408 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
409 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
410 extern uschar *readconf_printtime(int);
411 extern const uschar *readconf_readname(uschar *, int, const uschar *);
412 extern int readconf_readtime(const uschar *, int, BOOL);
413 extern void readconf_rest(void);
414 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
415 extern void readconf_save_config(const uschar *);
416 extern void read_message_body(BOOL);
417 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
418 extern BOOL receive_check_fs(int);
419 extern BOOL receive_check_set_sender(const uschar *);
420 extern BOOL receive_msg(BOOL);
421 extern int_eximarith_t receive_statvfs(BOOL, int *);
422 extern void receive_swallow_smtp(void);
423 extern int recv_fd_from_sock(int);
424 #ifdef WITH_CONTENT_SCAN
425 extern int regex(const uschar **, BOOL);
426 extern void regex_vars_clear(void);
428 extern void regex_at_daemon(const uschar *);
429 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
430 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
431 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
432 pcre2_compile_context *);
433 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
435 extern void retry_add_item(address_item *, const uschar *, int);
436 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
437 const uschar **, const uschar **);
438 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
439 extern const uschar *retry_host_key_build(const host_item *, BOOL,
441 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
442 dbdata_retry *, time_t);
443 extern void retry_update(address_item **, address_item **, address_item **);
444 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
445 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
446 extern header_line *rewrite_header(header_line *,
447 const uschar *, const uschar *,
448 rewrite_rule *, int, BOOL);
449 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
451 extern void rewrite_test(const uschar *);
452 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
454 extern int route_address(address_item *, address_item **, address_item **,
455 address_item **, address_item **, int);
456 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
457 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
458 extern BOOL route_findgroup(uschar *, gid_t *);
459 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
460 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
462 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
463 struct passwd **, uid_t *, uschar **);
464 extern void route_init(void);
465 extern gstring * route_show_supported(gstring *);
466 extern void route_tidyup(void);
467 extern uschar *router_current_name(void);
469 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
471 extern uschar *search_find(void *, const uschar *, const uschar *, int,
472 const uschar *, int, int, int *, const uschar *);
473 extern const lookup_info * search_findtype(const uschar *, int);
474 extern const lookup_info * search_findtype_partial(const uschar *, int *,
475 const uschar **, int *, int *, const uschar **);
476 extern void *search_open(const uschar *, const lookup_info *, int,
478 extern void search_tidyup(void);
479 extern BOOL send_fd_over_socket(int, int);
480 extern uschar *sender_helo_verified_boolstr(void);
481 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
482 extern void sha1_end(hctx *, const uschar *, int, uschar *);
483 extern void sha1_mid(hctx *, const uschar *);
484 extern void sha1_start(hctx *);
485 extern void sigalrm_handler(int);
486 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
487 extern int smtp_boundsock(smtp_connect_args *);
488 extern void smtp_closedown(uschar *);
489 extern void smtp_command_timeout_exit(void) NORETURN;
490 extern void smtp_command_sigterm_exit(void) NORETURN;
491 extern void smtp_data_timeout_exit(void) NORETURN;
492 extern void smtp_data_sigint_exit(void) NORETURN;
493 extern void smtp_deliver_init(void);
494 extern uschar *smtp_cmd_hist(void);
495 extern int smtp_connect(smtp_connect_args *, const blob *);
496 extern int smtp_feof(void);
497 extern int smtp_ferror(void);
498 extern uschar *smtp_get_connection_info(void);
499 extern BOOL smtp_get_interface(uschar *, int, address_item *,
500 uschar **, uschar *);
501 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
502 extern int smtp_getc(unsigned);
503 extern uschar *smtp_getbuf(unsigned *);
504 extern void smtp_get_cache(unsigned);
505 extern BOOL smtp_hasc(void);
506 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
507 extern void smtp_log_no_mail(void);
508 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
509 extern void smtp_notquit_exit(const uschar *, uschar *, const uschar *, ...);
510 extern void smtp_port_for_connect(host_item *, int);
511 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
512 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
513 extern void *smtp_reset(void *);
514 extern void smtp_respond(uschar *, int, BOOL, uschar *);
515 extern void smtp_send_prohibition_message(int, uschar *);
516 extern int smtp_setup_msg(void);
517 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
518 extern BOOL smtp_start_session(void);
519 extern int smtp_ungetc(int);
520 extern void smtp_verify_feed(const uschar *, unsigned);
521 extern BOOL smtp_verify_helo(void);
522 extern int smtp_write_atrn(address_item *, cut_t *);
523 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
524 #ifdef WITH_CONTENT_SCAN
525 extern int spam(const uschar **);
526 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
528 extern void spool_clear_header_globals(void);
529 extern int spool_has_one_undelivered_dom(const uschar *);
530 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
531 extern int spool_open_datafile(const uschar *);
532 extern int spool_open_temp(uschar *);
533 extern int spool_read_header(uschar *, BOOL, BOOL);
534 extern uschar *spool_sender_from_msgid(const uschar *);
535 extern int spool_write_header(const uschar *, int, uschar **);
536 extern int stdin_getc(unsigned);
537 extern int stdin_feof(void);
538 extern int stdin_ferror(void);
539 extern BOOL stdin_hasc(void);
540 extern int stdin_ungetc(int);
542 extern void stackdump(void);
543 extern void store_exit(void);
544 extern void store_init(void);
545 extern void store_writeprotect(int);
547 #ifdef MISSING_POSIX_STPCPY
548 extern char * stpcpy(char * restrict, const char * restrict);
551 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
552 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
553 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
554 extern gstring *string_append_listele_fmt(gstring *, uschar, BOOL, const char *, ...) WARN_UNUSED_RESULT;
555 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
556 extern uschar *string_base62_32(unsigned long int);
557 extern uschar *string_base62_64(unsigned long int);
558 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
559 extern int string_compare_by_pointer(const void *, const void *);
560 extern uschar *string_copy_dnsdomain(uschar *);
561 extern uschar *string_copy_malloc(const uschar *);
562 extern uschar *string_dequote(const uschar **);
563 extern uschar *string_format_size(int, uschar *);
564 extern int string_interpret_escape(const uschar **);
565 extern int string_is_ip_address(const uschar *, int *);
566 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
568 extern BOOL string_is_utf8(const uschar *);
570 extern const uschar *string_printing2(const uschar *, int);
571 extern uschar *string_split_message(uschar *);
572 extern uschar *string_unprinting(uschar *);
574 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
575 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
576 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
577 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
578 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
581 #define string_format(buf, siz, fmt, ...) \
582 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
583 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
584 const char *, ...) ALMOST_PRINTF(5,6);
586 #define string_vformat(g, flgs, fmt, ap) \
587 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
588 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
589 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
590 unsigned, unsigned, const char *, va_list);
592 #define string_open_failed(fmt, ...) \
593 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
594 extern uschar *string_open_failed_trc(const uschar *, unsigned,
595 const char *, ...) PRINTF_FUNCTION(3,4);
597 #define string_nextinlist(lp, sp, b, l) \
598 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
599 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
600 const uschar * func, int line);
602 extern int strcmpic(const uschar *, const uschar *);
603 extern int strncmpic(const uschar *, const uschar *, int);
604 extern uschar *strstric(uschar *, uschar *, BOOL);
605 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
607 extern int synprot_error(int, int, uschar *, uschar *);
609 extern int test_harness_fudged_queue_time(int);
610 extern void tcp_init(void);
611 #ifdef EXIM_TFO_PROBE
612 extern void tfo_probe(void);
614 extern void tls_modify_variables(tls_support *);
615 extern uschar *tod_stamp(int);
617 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
619 extern uschar *transport_current_name(void);
620 extern void transport_do_pass_socket(const uschar *, const uschar *,
621 const uschar *, uschar *, int);
622 extern void transport_init(void);
623 extern const uschar *transport_rcpt_address(address_item *, BOOL);
624 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
625 unsigned, int, address_item *, const uschar *, uschar **);
626 extern void transport_update_waiting(host_item *, const uschar *);
627 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
628 extern void transport_write_reset(int);
629 extern BOOL transport_write_string(int, const char *, ...);
630 extern BOOL transport_headers_send(transport_ctx *,
631 BOOL (*)(transport_ctx *, const uschar *, int));
632 extern gstring * transport_show_supported(gstring *);
633 extern BOOL transport_write_message(transport_ctx *, int);
634 extern void tree_add_duplicate(const uschar *, address_item *);
635 extern void tree_add_nonrecipient(const uschar *);
636 extern void tree_add_unusable(const host_item *);
637 extern void tree_dup(tree_node **, tree_node *);
638 extern int tree_insertnode(tree_node **, tree_node *);
639 extern tree_node *tree_search(tree_node *, const uschar *);
640 extern void tree_write(tree_node *, FILE *);
641 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
643 #ifdef WITH_CONTENT_SCAN
644 extern void unspool_mbox(void);
647 extern gstring *utf8_version_report(gstring *);
650 extern int vaguely_random_number(int);
652 extern int vaguely_random_number_fallback(int);
654 extern int verify_address(address_item *, FILE *, int, int, int, int,
655 uschar *, uschar *, BOOL *);
656 extern int verify_check_dnsbl(int, const uschar *, uschar **);
657 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
658 uschar *, uschar *, int, int *);
659 extern int verify_check_headers(uschar **);
660 extern int verify_check_header_names_ascii(uschar **);
661 extern int verify_check_host(uschar **);
662 extern int verify_check_notblind(BOOL);
663 extern int verify_check_given_host(const uschar **, const host_item *);
664 extern int verify_check_this_host(const uschar **, unsigned int *,
665 const uschar*, const uschar *, const uschar **);
666 extern address_item *verify_checked_sender(const uschar *);
667 extern void verify_get_ident(int);
668 extern void verify_quota(uschar *);
669 extern int verify_quota_call(const uschar *, int, int, uschar **);
670 extern BOOL verify_sender(int *, uschar **);
671 extern BOOL verify_sender_preliminary(int *, uschar **);
672 extern void version_init(void);
674 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
675 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
676 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
678 #ifdef EXPERIMENTAL_XCLIENT
679 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
680 extern gstring * xclient_smtp_advertise_str(gstring *);
682 extern uschar *xtextencode(uschar *, int);
683 extern int xtextdecode(uschar *, uschar **);
686 /******************************************************************************/
687 /* Predicate: if an address is in a tainted pool.
688 By extension, a variable pointing to this address is tainted.
692 is_tainted(const void * p)
694 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
698 extern BOOL is_tainted_fn(const void *);
699 return is_tainted_fn(p);
704 is_incompatible(const void * old, const void * new)
706 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
710 extern BOOL is_incompatible_fn(const void *, const void *);
711 return is_incompatible_fn(old, new);
715 /******************************************************************************/
716 /* String functions */
717 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
719 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
720 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
722 return US strcat(CS dst, CCS src);
724 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
726 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
727 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
729 return US strcpy(CS dst, CCS src);
731 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
733 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
734 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
736 return US strncat(CS dst, CCS src, n);
738 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
740 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
741 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
743 return US strncpy(CS dst, CCS src, n);
745 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
746 static inline uschar * __Ustpcpy(uschar * dst, const uschar * src, const char * func, int line)
748 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustpcpy", CUS func, line);
749 return US stpcpy(CS dst, CCS src);
752 /*XXX will likely need unchecked copy also */
756 /* Advance the string pointer given over any whitespace.
757 Return the next char as there's enough places using it to be useful. */
759 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
761 static inline uschar skip_whitespace(const uschar ** sp)
762 { while (isspace(**sp)) (*sp)++; return **sp; }
764 /* Ditto, non-whitespace */
766 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
767 static inline uschar skip_nonwhite(const uschar ** sp)
768 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
771 /******************************************************************************/
773 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
774 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
775 chown(<exim-uid>, <exim-gid>).
777 Probably because the idmapping is broken, misconfigured or set up in
778 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
779 case of misconfiguration, or if there are more such broken systems
780 out, I try to impose as least impact as possible and for now just write
781 a panic log entry pointing to the bug report. You're encouraged to
782 contact the developers, if you experience this issue.
784 fd the file descriptor (or -1 if not valid)
785 name the file name for error messages or for file operations,
790 returns 0 on success, -1 on failure */
793 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
795 return fchown(fd, owner, group)
796 ? exim_chown_failure(fd, name, owner, group) : 0;
800 exim_chown(const uschar *name, uid_t owner, gid_t group)
802 return chown(CCS name, owner, group)
803 ? exim_chown_failure(-1, name, owner, group) : 0;
805 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
807 /******************************************************************************/
808 /* String functions */
810 #if !defined(MACRO_PREDEF)
811 /*************************************************
812 * Copy and save string *
813 *************************************************/
815 /* This function assumes that memcpy() is faster than strcpy().
816 The result is explicitly nul-terminated.
819 static inline uschar *
820 string_copyn_taint_trc(const uschar * s, unsigned len,
821 const void * proto_mem, const char * func, int line)
824 unsigned slen = Ustrlen(s);
825 if (len > slen) len = slen;
826 ss = store_get_3(len + 1, proto_mem, func, line);
832 static inline uschar *
833 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
834 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
836 static inline uschar *
837 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
838 { return string_copyn_taint_trc(s, len, s, func, line); }
839 static inline uschar *
840 string_copy_trc(const uschar * s, const char * func, int line)
841 { return string_copy_taint_trc(s, s, func, line); }
844 /* String-copy functions explicitly setting the taint status */
846 #define string_copyn_taint(s, len, proto_mem) \
847 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
848 #define string_copy_taint(s, proto_mem) \
849 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
851 /* Simple string-copy functions maintaining the taint */
853 #define string_copyn(s, len) \
854 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
855 #define string_copy(s) \
856 string_copy_trc((s), __FUNCTION__, __LINE__)
859 /*************************************************
860 * Copy, lowercase and save string *
861 *************************************************/
864 Argument: string to copy
865 Returns: copy of string in new store, with letters lowercased
868 static inline uschar *
869 string_copylc(const uschar * s)
871 uschar * ss = store_get(Ustrlen(s) + 1, s);
873 while (*s) *p++ = tolower(*s++);
880 /*************************************************
881 * Copy, lowercase, and save string, given length *
882 *************************************************/
884 /* It is assumed the data contains no zeros. A zero is added
889 n number of characters
891 Returns: copy of string in new store, with letters lowercased
894 static inline uschar *
895 string_copynlc(uschar * s, int n)
897 uschar * ss = store_get(n + 1, s);
899 while (n-- > 0) *p++ = tolower(*s++);
905 # ifndef COMPILE_UTILITY
906 /*************************************************
907 * Copy and save string in longterm store *
908 *************************************************/
910 /* This function assumes that memcpy() is faster than strcpy().
912 Argument: string to copy
913 Returns: copy of string in new store
916 static inline uschar *
917 string_copy_perm(const uschar *s, BOOL force_taint)
919 int old_pool = store_pool;
920 int len = Ustrlen(s) + 1;
923 store_pool = POOL_PERM;
924 ss = store_get(len, force_taint ? GET_TAINTED : s);
926 store_pool = old_pool;
933 /* sprintf into a buffer, taint-unchecked */
936 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
938 gstring gs = { .size = siz, .ptr = 0, .s = buf };
941 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
947 /******************************************************************************/
948 /* Growable-string functions */
950 /* Create a growable-string with some preassigned space */
952 #define string_get_tainted(size, proto_mem) \
953 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
955 static inline gstring *
956 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
958 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
959 g->size = size; /*XXX would be good if we could see the actual alloc size */
965 #define string_get(size) \
966 string_get_trc((size), __FUNCTION__, __LINE__)
968 static inline gstring *
969 string_get_trc(unsigned size, const char * func, unsigned line)
971 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
974 /* NUL-terminate the C string in the growable-string, and return it. */
976 static inline uschar *
977 string_from_gstring(gstring * g)
985 len_string_from_gstring(gstring * g, uschar ** sp)
1000 static inline uschar *
1001 string_copy_from_gstring(gstring * g)
1003 return g ? string_copyn(g->s, g->ptr) : NULL;
1006 static inline unsigned
1007 gstring_length(const gstring * g)
1009 return g ? (unsigned)g->ptr : 0;
1012 static inline uschar
1013 gstring_last_char(gstring * g)
1015 return g && g->ptr > 0 ? g->s[g->ptr-1] : '\0';
1019 gstring_trim(gstring * g, unsigned amount)
1025 gstring_trim_trailing(gstring * g, uschar c)
1027 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1031 gstring_reset(gstring * g)
1037 #define gstring_release_unused(g) \
1038 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1041 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1043 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1047 /* plain string append to a growable-string */
1049 static inline gstring * string_cat(gstring * g, const uschar * s)
1052 static inline gstring *
1053 string_cat(gstring * g, const uschar * s)
1055 return string_catn(g, s, Ustrlen(s));
1059 /* sprintf-append to a growable-string */
1061 #define string_fmt_append(g, fmt, ...) \
1062 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1063 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1065 #define string_fmt_append_f(g, flgs, fmt, ...) \
1066 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1067 flgs, fmt, __VA_ARGS__)
1069 static inline gstring *
1070 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1071 unsigned flags, const char *format, ...)
1074 va_start(ap, format);
1075 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1082 /* Copy the content of a string to tainted memory. The proto_mem arg
1083 will always be tainted, and suitable as a prototype. */
1086 gstring_rebuffer(gstring * g, const void * proto_mem)
1088 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1089 memcpy(s, g->s, g->ptr);
1093 /* Append one gstring to another */
1095 static inline gstring *
1096 gstring_append(gstring * dest, gstring * item)
1099 ? dest ? string_catn(dest, item->s, item->ptr) : item
1104 # ifndef COMPILE_UTILITY
1105 /******************************************************************************/
1106 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1107 for them as the strings we proceed to copy from them meant they could not be
1108 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1109 we do have to take care over marking tainted all copied strings. A separate pool
1110 could be used and would handle that implicitly. */
1112 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1114 static inline dns_answer *
1115 store_get_dns_answer_trc(const uschar * func, unsigned line)
1117 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1120 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1123 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1125 store_free_3(dnsa, CCS func, line);
1129 /* Check for an RR being large enough. Return TRUE iff bad. */
1131 rr_bad_size(const dns_record * rr, size_t minbytes)
1133 return rr->size < minbytes;
1136 /* Check for an RR having further data beyond a given pointer.
1137 Return TRUE iff bad. */
1139 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1141 return rr_bad_size(rr, ptr - rr->data + minbytes);
1144 /******************************************************************************/
1145 /* Routines with knowledge of spool layout */
1148 spool_pname_buf(uschar * buf, int len)
1150 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1153 static inline uschar *
1154 spool_dname(const uschar * purpose, uschar * subdir)
1156 return string_sprintf("%s/%s/%s/%s",
1157 spool_directory, queue_name, purpose, subdir);
1161 static inline uschar *
1162 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1164 return string_sprintf("%s%s%s%s%s",
1167 *subdir ? "/" : "", subdir);
1170 static inline uschar *
1171 spool_sname(const uschar * purpose, const uschar * subdir)
1173 return spool_q_sname(purpose, queue_name, subdir);
1176 static inline uschar *
1177 spool_q_fname(const uschar * purpose, const uschar * q,
1178 const uschar * subdir, const uschar * fname, const uschar * suffix)
1180 return string_sprintf("%s/%s/%s/%s/%s%s",
1181 spool_directory, q, purpose, subdir, fname, suffix);
1184 static inline uschar *
1185 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1186 const uschar * suffix)
1188 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1189 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1190 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1191 uschar * buf = store_get(len, GET_UNTAINTED);
1192 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1193 spool_directory, queue_name, purpose, subdir, fname, suffix);
1196 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1201 set_subdir_str(uschar * subdir_str, const uschar * name,
1202 int search_sequence)
1204 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1205 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1206 subdir_str[1] = '\0';
1209 /******************************************************************************/
1210 /* Message-ID format transition knowlege */
1213 is_new_message_id(const uschar * id)
1215 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1219 is_old_message_id(const uschar * id)
1221 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1224 static inline unsigned
1225 spool_data_start_offset(const uschar * id)
1227 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1228 return SPOOL_DATA_START_OFFSET;
1231 /******************************************************************************/
1232 /* Time calculations */
1234 /* Diff two times (later, earlier) returning diff in 1st arg */
1236 timediff(struct timeval * later, const struct timeval * earlier)
1238 later->tv_sec -= earlier->tv_sec;
1239 if ((later->tv_usec -= earlier->tv_usec) < 0)
1242 later->tv_usec += 1000*1000;
1247 timesince(struct timeval * diff, const struct timeval * then)
1249 gettimeofday(diff, NULL);
1250 timediff(diff, then);
1253 static inline uschar *
1254 string_timediff(const struct timeval * diff)
1256 static uschar buf[16];
1258 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1259 return readconf_printtime((int)diff->tv_sec);
1261 snprintf(CS buf, sizeof(buf), "%u.%03us",
1262 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1267 static inline uschar *
1268 string_timesince(const struct timeval * then)
1270 struct timeval diff;
1271 timesince(&diff, then);
1272 return string_timediff(&diff);
1276 report_time_since(const struct timeval * t0, const uschar * where)
1278 # ifdef MEASURE_TIMING
1279 struct timeval diff;
1280 timesince(&diff, t0);
1281 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1282 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1288 testharness_pause_ms(int millisec)
1290 #ifndef MEASURE_TIMING
1291 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1295 /******************************************************************************/
1296 /* Taint-checked file opens. Return values/errno per open(2). */
1299 exim_open2(const char *pathname, int flags)
1301 if (!is_tainted(pathname)) return open(pathname, flags);
1302 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1307 exim_open(const char *pathname, int flags, mode_t mode)
1309 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1310 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1314 #ifdef EXIM_HAVE_OPENAT
1316 exim_openat(int dirfd, const char *pathname, int flags)
1318 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1319 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1324 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1326 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1327 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1333 static inline FILE *
1334 exim_fopen(const char *pathname, const char *mode)
1336 if (!is_tainted(pathname)) return fopen(pathname, mode);
1337 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1343 exim_opendir(const uschar * name)
1345 if (!is_tainted(name)) return opendir(CCS name);
1346 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1351 /******************************************************************************/
1352 # if !defined(COMPILE_UTILITY)
1354 /* We use the PID of the head process for a connection-id. Note that
1355 this is only for tracking a received connection and what it directly
1356 causes; there is no inttent to describe transport-initiated TCP connections.
1357 The value is intented to be a cookie usable for logging, and we might change
1358 the generator for it at any time. */
1361 set_connection_id(void)
1363 connection_id = string_sprintf("%lu", (u_long)getpid());
1367 /* Process manipulation */
1370 exim_fork(const unsigned char * purpose)
1374 debug_printf_indent("%s forking for %s\n", process_purpose, purpose);
1375 if ((pid = fork()) == 0)
1377 f.daemon_listen = FALSE;
1378 process_purpose = purpose;
1379 DEBUG(D_any) debug_printf_indent("postfork: %s\n", purpose);
1383 testharness_pause_ms(100); /* let child work */
1384 DEBUG(D_any) debug_printf_indent("%s forked for %s: %d\n",
1385 process_purpose, purpose, (int)pid);
1392 child_open_exim(int * fdptr, const uschar * purpose)
1393 { return child_open_exim_function(fdptr, purpose); }
1396 child_open_exim2(int * fdptr, uschar * sender,
1397 uschar * sender_auth, const uschar * purpose)
1398 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1401 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1402 int *outfdptr, BOOL make_leader, const uschar * purpose)
1403 { return child_open_function(argv, envp, newumask, infdptr,
1404 outfdptr, make_leader, purpose);
1407 /* Return 1 if fd is usable per pollbits, else 0 */
1409 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1411 struct pollfd p = {.fd = fd, .events = pollbits};
1412 return poll(&p, 1, tmo_millisec);
1415 /******************************************************************************/
1416 /* Client-side smtp log string, for debug */
1419 smtp_debug_cmd_log_init(void)
1421 # ifndef DISABLE_CLIENT_CMD_LOG
1422 int old_pool = store_pool;
1423 store_pool = POOL_PERM;
1424 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1425 *client_cmd_log->s = '\0';
1426 store_pool = old_pool;
1432 smtp_debug_cmd(const uschar * buf, int mode)
1434 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1435 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1437 # ifndef DISABLE_CLIENT_CMD_LOG
1439 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1440 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1441 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1442 if (mode == SCMD_BUFFER)
1443 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1444 else if (mode == SCMD_MORE)
1445 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1446 store_pool = old_pool;
1452 /* This might be called both due to callout and then from delivery.
1453 Use memory that will not be released between those phases.
1456 smtp_debug_resp(const uschar * buf)
1458 # ifndef DISABLE_CLIENT_CMD_LOG
1459 int old_pool = store_pool;
1460 store_pool = POOL_PERM;
1461 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1462 buf[3] == '-' ? 4 : 3);
1463 store_pool = old_pool;
1469 smtp_debug_cmd_report(void)
1471 # ifndef DISABLE_CLIENT_CMD_LOG
1472 if (client_cmd_log && *client_cmd_log->s)
1474 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1475 gstring_reset(client_cmd_log);
1478 debug_printf("cmdlog: (unset)\n");
1485 expand_max_rcpt(const uschar * str_max_rcpt)
1487 const uschar * s = expand_cstring(str_max_rcpt);
1489 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1492 /******************************************************************************/
1493 /* Queue-runner operations */
1496 is_onetime_qrun(void)
1498 return qrunners && !qrunners->next && qrunners->interval == 0;
1502 is_multiple_qrun(void)
1504 return qrunners && (qrunners->interval > 0 || qrunners->next);
1508 # endif /* !COMPILE_UTILITY */
1510 /******************************************************************************/
1511 #endif /* !MACRO_PREDEF */
1513 #endif /* _FUNCTIONS_H_ */
1517 /* End of functions.h */