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_saslauthd(const uschar *, const uschar *,
117 const uschar *, const uschar *, uschar **);
118 extern int auth_check_serv_cond(auth_instance *);
119 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
120 extern int auth_client_item(void *, auth_instance *, const uschar **,
121 unsigned, int, uschar *, int);
124 extern int auth_get_data(uschar **, const uschar *, int);
125 extern int auth_get_no64_data(uschar **, uschar *);
126 extern int auth_prompt(const uschar *);
127 extern int auth_read_input(const uschar *);
128 extern gstring * auth_show_supported(gstring *);
129 extern uschar *authenticator_current_name(void);
131 extern gstring *authres_smtpauth(gstring *);
133 extern uschar *b64encode(const uschar *, int);
134 extern uschar *b64encode_taint(const uschar *, int, const void *);
135 extern int b64decode(const uschar *, uschar **, const void *);
136 extern int bdat_getc(unsigned);
137 extern uschar *bdat_getbuf(unsigned *);
138 extern BOOL bdat_hasc(void);
139 extern int bdat_ungetc(int);
140 extern void bdat_flush_data(void);
142 extern void bits_clear(unsigned int *, size_t, int *);
143 extern void bits_set(unsigned int *, size_t, int *);
145 extern void cancel_cutthrough_connection(BOOL, const uschar *);
146 extern gstring *cat_file(FILE *, gstring *, uschar *);
147 extern gstring *cat_file_tls(void *, gstring *, uschar *);
148 extern int check_host(void *, const uschar *, const uschar **, uschar **);
149 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
150 extern pid_t child_open_exim_function(int *, const uschar *);
151 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
153 extern pid_t child_open_function(uschar **, uschar **, int,
154 int *, int *, BOOL, const uschar *);
155 extern pid_t child_open_uid(const uschar **, const uschar **, int,
156 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
157 extern BOOL cleanup_environment(void);
158 extern void cutthrough_data_puts(uschar *, int);
159 extern void cutthrough_data_put_nl(void);
160 extern uschar *cutthrough_finaldot(void);
161 extern BOOL cutthrough_flush_send(void);
162 extern BOOL cutthrough_headers_send(void);
163 extern BOOL cutthrough_predata(void);
164 extern void release_cutthrough_connection(const uschar *);
166 extern void daemon_go(void);
167 #ifndef COMPILE_UTILITY
168 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
169 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
172 #ifdef EXPERIMENTAL_DCC
173 extern int dcc_process(uschar **);
176 extern void debug_logging_activate(const uschar *, const uschar *);
177 extern void debug_logging_from_spool(const uschar *);
178 extern void debug_logging_stop(BOOL);
179 extern void debug_print_argv(const uschar **);
180 extern void debug_print_ids(uschar *);
181 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
182 extern void debug_print_string(uschar *);
183 extern void debug_print_tree(const char *, tree_node *);
184 extern void debug_vprintf(int, const char *, va_list);
185 extern void debug_pretrigger_setup(const uschar *);
186 extern void debug_pretrigger_discard(void);
187 extern void debug_print_socket(int);
188 extern void debug_trigger_fire(void);
190 extern void decode_bits(unsigned int *, size_t, int *,
191 const uschar *, bit_table *, int, uschar *, int);
192 extern void delete_pid_file(void);
193 extern void deliver_local(address_item *, BOOL);
194 extern address_item *deliver_make_addr(const uschar *, BOOL);
195 extern void delivery_log(int, address_item *, int, uschar *);
196 extern int deliver_message(const uschar *, BOOL, BOOL);
197 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
198 extern void deliver_set_expansions(address_item *);
199 extern int deliver_split_address(address_item *);
200 extern void deliver_succeeded(address_item *);
202 extern void delivery_re_exec(int);
204 extern void die_tainted(const uschar *, const uschar *, int);
205 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
206 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
207 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
208 extern uschar *dns_build_reverse(const uschar *);
209 extern time_t dns_expire_from_soa(dns_answer *, int);
210 extern void dns_init(BOOL, BOOL, BOOL);
211 extern BOOL dns_is_aa(const dns_answer *);
212 extern BOOL dns_is_secure(const dns_answer *);
213 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
214 extern void dns_pattern_init(void);
215 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
216 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
217 extern uschar *dns_text_type(int);
218 extern void dscp_list_to_stream(FILE *);
219 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
221 extern void enq_end(uschar *);
222 extern BOOL enq_start(uschar *, unsigned);
223 #ifndef DISABLE_EVENT
224 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
225 extern void msg_event_raise(const uschar *, const address_item *);
228 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
229 extern const uschar * exim_errstr(int);
230 extern void exim_exit(int) NORETURN;
231 extern void exim_gettime(struct timeval *);
232 extern void exim_nullstd(void);
233 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
234 extern void exim_underbar_exit(int) NORETURN;
235 extern void exim_wait_tick(struct timeval *, int);
236 extern int exp_bool(address_item *,
237 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
238 const uschar *, BOOL *);
239 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
240 extern uschar *expand_file_big_buffer(const uschar *);
241 extern uschar *expand_string(uschar *); /* public, cannot make const */
242 extern const uschar *expand_string_2(const uschar *, BOOL *);
243 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
244 extern uschar *expand_getkeyed(const uschar *, const uschar *);
246 extern uschar *expand_hide_passwords(uschar * );
247 extern uschar *expand_string_copy(const uschar *);
248 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
249 extern void modify_variable(uschar *, void *);
251 extern BOOL fd_ready(int, time_t);
253 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
254 extern BOOL filter_personal(string_item *, BOOL);
255 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
256 extern BOOL filter_system_interpret(address_item **, uschar **);
258 extern uschar * fn_hdrs_added(void);
259 extern void force_fd(int, int);
261 extern void header_add(int, const char *, ...);
262 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
263 extern int header_checkname(header_line *, BOOL);
264 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
265 extern int host_address_extract_port(uschar *);
266 extern uschar *host_and_ident(BOOL);
267 extern int host_aton(const uschar *, int *);
268 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
269 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
270 extern void host_build_log_info(void);
271 extern void host_build_sender_fullhost(void);
272 extern int host_find_byname(host_item *, const uschar *, int,
273 const uschar **, BOOL);
274 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
275 uschar *, const dnssec_domains *, const uschar **, BOOL *);
276 extern ip_address_item *host_find_interfaces(void);
277 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
278 extern BOOL host_is_tls_on_connect_port(int);
279 extern int host_item_get_port(host_item *);
280 extern void host_mask(int, int *, int);
281 extern int host_name_lookup(void);
282 extern int host_nmtoa(int, const int *, int, uschar *, int);
283 extern uschar *host_ntoa(int, const void *, uschar *, int *);
284 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
286 extern uschar *imap_utf7_encode(uschar *, const uschar *,
287 uschar, uschar *, uschar **);
289 extern void invert_address(uschar *, uschar *);
290 extern int ip_addr(void *, int, const uschar *, int);
291 extern int ip_bind(int, int, uschar *, int);
292 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
293 extern int ip_connectedsocket(int, const uschar *, int, int,
294 int, host_item *, uschar **, const blob *);
295 extern int ip_get_address_family(int);
296 extern void ip_keepalive(int, const uschar *, BOOL);
297 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
298 extern int ip_socket(int, int);
300 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
301 extern int ip_unixsocket(const uschar *, uschar **);
302 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
304 extern int ipv6_nmtoa(int *, uschar *);
306 extern const uschar *local_part_quote(const uschar *);
307 extern int log_open_as_exim(const uschar * const);
308 extern void log_close_all(void);
309 extern const lookup_info * lookup_with_acq_num(unsigned);
310 #ifdef LOOKUP_MODULE_DIR
311 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
315 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
316 extern BOOL macro_read_assignment(uschar *);
317 extern uschar *macros_expand(int, int *, BOOL *);
318 extern void mainlog_close(void);
319 #ifdef WITH_CONTENT_SCAN
320 extern int malware(const uschar *, BOOL, int);
321 extern int malware_in_file(const uschar *);
322 extern void malware_init(void);
323 extern gstring * malware_show_supported(gstring *);
325 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
326 unsigned int *, int, int, const uschar **);
327 extern int match_address_list_basic(const uschar *, const uschar **, int);
328 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
329 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
330 const uschar *, const uschar **);
331 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
332 unsigned int *, int, BOOL, const uschar **);
333 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
336 extern void message_start(void);
337 extern void message_tidyup(void);
338 extern void md5_end(md5 *, const uschar *, int, uschar *);
339 extern void md5_mid(md5 *, const uschar *);
340 extern void md5_start(md5 *);
341 extern void millisleep(int);
342 #ifdef WITH_CONTENT_SCAN
343 struct mime_boundary_context;
344 extern int mime_acl_check(uschar *acl, FILE *f,
345 struct mime_boundary_context *, uschar **, uschar **);
346 extern int mime_decode(const uschar **);
347 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
348 extern int mime_regex(const uschar **, BOOL);
349 extern void mime_set_anomaly(int);
352 extern gstring *misc_mod_authres(gstring *);
353 extern int misc_mod_conn_init(const uschar *, const uschar *);
354 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
355 extern misc_module_info * misc_mod_findonly(const uschar * modname);
356 extern int misc_mod_msg_init(void);
357 extern void misc_mod_smtp_reset(void);
359 extern uschar *moan_check_errorcopy(const uschar *);
360 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
362 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
363 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
364 header_line *, FILE *, uschar *);
365 extern void moan_tell_someone(uschar *, address_item *,
366 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
367 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
368 extern void moan_write_from(FILE *);
369 extern void moan_write_references(FILE *, uschar *);
370 #ifdef LOOKUP_MODULE_DIR
371 //extern void mod_load_check(const uschar *);
373 extern FILE *modefopen(const uschar *, const char *, mode_t);
375 extern int open_cutthrough_connection( address_item * addr );
377 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
379 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
380 const uschar *, const uschar *, error_block **);
381 extern uschar *parse_find_address_end(const uschar *, BOOL);
382 extern const uschar *parse_find_at(const uschar *);
383 extern const uschar *parse_fix_phrase(const uschar *, int);
384 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
385 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
387 extern const uschar *parse_date_time(const uschar *str, time_t *t);
388 extern void priv_drop_temp(const uid_t, const gid_t);
389 extern void priv_restore(void);
391 extern BOOL proxy_protocol_host(void);
392 extern void proxy_protocol_setup(void);
395 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
396 extern void queue_check_only(void);
397 extern unsigned queue_count(void);
398 extern unsigned queue_count_cached(void);
399 extern void queue_list(int, const uschar **, int);
400 #ifndef DISABLE_QUEUE_RAMP
401 extern void queue_notify_daemon(const uschar * hostname);
403 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
405 extern int random_number(int);
406 extern const uschar *rc_to_string(int);
407 extern int rda_interpret(redirect_block *, int, const uschar *,
408 const sieve_block *, const ugid_block *, address_item **,
409 uschar **, error_block **, int *, const uschar *);
410 extern int rda_is_filter(const uschar *);
411 extern BOOL readconf_depends(driver_instance *, uschar *);
412 extern void readconf_driver_init(driver_instance **, driver_info **, int,
413 void *, int, optionlist *, int, const uschar *);
414 extern const uschar *readconf_find_option(void *);
415 extern void readconf_main(BOOL);
416 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
417 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
418 extern uschar *readconf_printtime(int);
419 extern const uschar *readconf_readname(uschar *, int, const uschar *);
420 extern int readconf_readtime(const uschar *, int, BOOL);
421 extern void readconf_rest(void);
422 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
423 extern void readconf_save_config(const uschar *);
424 extern void read_message_body(BOOL);
425 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
426 extern BOOL receive_check_fs(int);
427 extern BOOL receive_check_set_sender(const uschar *);
428 extern BOOL receive_msg(BOOL);
429 extern int_eximarith_t receive_statvfs(BOOL, int *);
430 extern void receive_swallow_smtp(void);
431 extern int recv_fd_from_sock(int);
432 #ifdef WITH_CONTENT_SCAN
433 extern int regex(const uschar **, BOOL);
434 extern void regex_vars_clear(void);
436 extern void regex_at_daemon(const uschar *);
437 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
438 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
439 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
440 pcre2_compile_context *);
441 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
443 extern void retry_add_item(address_item *, const uschar *, int);
444 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
445 const uschar **, const uschar **);
446 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
447 extern const uschar *retry_host_key_build(const host_item *, BOOL,
449 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
450 dbdata_retry *, time_t);
451 extern void retry_update(address_item **, address_item **, address_item **);
452 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
453 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
454 extern header_line *rewrite_header(header_line *,
455 const uschar *, const uschar *,
456 rewrite_rule *, int, BOOL);
457 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
459 extern void rewrite_test(const uschar *);
460 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
462 extern int route_address(address_item *, address_item **, address_item **,
463 address_item **, address_item **, int);
464 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
465 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
466 extern BOOL route_findgroup(uschar *, gid_t *);
467 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
468 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
470 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
471 struct passwd **, uid_t *, uschar **);
472 extern void route_init(void);
473 extern gstring * route_show_supported(gstring *);
474 extern void route_tidyup(void);
475 extern uschar *router_current_name(void);
477 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
479 extern uschar *search_find(void *, const uschar *, const uschar *, int,
480 const uschar *, int, int, int *, const uschar *);
481 extern const lookup_info * search_findtype(const uschar *, int);
482 extern const lookup_info * search_findtype_partial(const uschar *, int *,
483 const uschar **, int *, int *, const uschar **);
484 extern void *search_open(const uschar *, const lookup_info *, int,
486 extern void search_tidyup(void);
487 extern BOOL send_fd_over_socket(int, int);
488 extern uschar *sender_helo_verified_boolstr(void);
489 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
490 extern void sha1_end(hctx *, const uschar *, int, uschar *);
491 extern void sha1_mid(hctx *, const uschar *);
492 extern void sha1_start(hctx *);
493 extern int sieve_interpret(const uschar *, int, const sieve_block *,
494 address_item **, uschar **);
495 extern void sigalrm_handler(int);
496 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
497 extern int smtp_boundsock(smtp_connect_args *);
498 extern void smtp_closedown(uschar *);
499 extern void smtp_command_timeout_exit(void) NORETURN;
500 extern void smtp_command_sigterm_exit(void) NORETURN;
501 extern void smtp_data_timeout_exit(void) NORETURN;
502 extern void smtp_data_sigint_exit(void) NORETURN;
503 extern void smtp_deliver_init(void);
504 extern uschar *smtp_cmd_hist(void);
505 extern int smtp_connect(smtp_connect_args *, const blob *);
506 extern int smtp_feof(void);
507 extern int smtp_ferror(void);
508 extern uschar *smtp_get_connection_info(void);
509 extern BOOL smtp_get_interface(uschar *, int, address_item *,
510 uschar **, uschar *);
511 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
512 extern int smtp_getc(unsigned);
513 extern uschar *smtp_getbuf(unsigned *);
514 extern void smtp_get_cache(unsigned);
515 extern BOOL smtp_hasc(void);
516 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
517 extern void smtp_log_no_mail(void);
518 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
519 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
520 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
521 extern void *smtp_reset(void *);
522 extern void smtp_respond(uschar *, int, BOOL, uschar *);
523 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
524 extern void smtp_port_for_connect(host_item *, int);
525 extern void smtp_send_prohibition_message(int, uschar *);
526 extern int smtp_setup_msg(void);
527 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
528 extern BOOL smtp_start_session(void);
529 extern int smtp_ungetc(int);
530 extern void smtp_verify_feed(const uschar *, unsigned);
531 extern BOOL smtp_verify_helo(void);
532 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
533 #ifdef WITH_CONTENT_SCAN
534 extern int spam(const uschar **);
535 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
537 extern void spool_clear_header_globals(void);
538 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
539 extern int spool_open_datafile(const uschar *);
540 extern int spool_open_temp(uschar *);
541 extern int spool_read_header(uschar *, BOOL, BOOL);
542 extern uschar *spool_sender_from_msgid(const uschar *);
543 extern int spool_write_header(const uschar *, int, uschar **);
544 extern int stdin_getc(unsigned);
545 extern int stdin_feof(void);
546 extern int stdin_ferror(void);
547 extern BOOL stdin_hasc(void);
548 extern int stdin_ungetc(int);
550 extern void stackdump(void);
551 extern void store_exit(void);
552 extern void store_init(void);
553 extern void store_writeprotect(int);
555 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
556 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
557 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
558 extern gstring *string_append_listele_fmt(gstring *, uschar, const char *, ...) WARN_UNUSED_RESULT;
559 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
560 extern uschar *string_base62_32(unsigned long int);
561 extern uschar *string_base62_64(unsigned long int);
562 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
563 extern int string_compare_by_pointer(const void *, const void *);
564 extern uschar *string_copy_dnsdomain(uschar *);
565 extern uschar *string_copy_malloc(const uschar *);
566 extern uschar *string_dequote(const uschar **);
567 extern uschar *string_format_size(int, uschar *);
568 extern int string_interpret_escape(const uschar **);
569 extern int string_is_ip_address(const uschar *, int *);
570 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
572 extern BOOL string_is_utf8(const uschar *);
574 extern const uschar *string_printing2(const uschar *, int);
575 extern uschar *string_split_message(uschar *);
576 extern uschar *string_unprinting(uschar *);
578 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
579 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
580 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
581 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
582 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
585 #define string_format(buf, siz, fmt, ...) \
586 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
587 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
588 const char *, ...) ALMOST_PRINTF(5,6);
590 #define string_vformat(g, flgs, fmt, ap) \
591 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
592 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
593 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
594 unsigned, unsigned, const char *, va_list);
596 #define string_open_failed(fmt, ...) \
597 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
598 extern uschar *string_open_failed_trc(const uschar *, unsigned,
599 const char *, ...) PRINTF_FUNCTION(3,4);
601 #define string_nextinlist(lp, sp, b, l) \
602 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
603 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
604 const uschar * func, int line);
606 extern int strcmpic(const uschar *, const uschar *);
607 extern int strncmpic(const uschar *, const uschar *, int);
608 extern uschar *strstric(uschar *, uschar *, BOOL);
609 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
611 extern int test_harness_fudged_queue_time(int);
612 extern void tcp_init(void);
613 #ifdef EXIM_TFO_PROBE
614 extern void tfo_probe(void);
616 extern void tls_modify_variables(tls_support *);
617 extern uschar *tod_stamp(int);
619 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
621 extern uschar *transport_current_name(void);
622 extern void transport_do_pass_socket(const uschar *, const uschar *,
623 const uschar *, uschar *, int);
624 extern void transport_init(void);
625 extern const uschar *transport_rcpt_address(address_item *, BOOL);
626 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
627 unsigned, int, address_item *, const uschar *, uschar **);
628 extern void transport_update_waiting(host_item *, const uschar *);
629 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
630 extern void transport_write_reset(int);
631 extern BOOL transport_write_string(int, const char *, ...);
632 extern BOOL transport_headers_send(transport_ctx *,
633 BOOL (*)(transport_ctx *, const uschar *, int));
634 extern gstring * transport_show_supported(gstring *);
635 extern BOOL transport_write_message(transport_ctx *, int);
636 extern void tree_add_duplicate(const uschar *, address_item *);
637 extern void tree_add_nonrecipient(const uschar *);
638 extern void tree_add_unusable(const host_item *);
639 extern void tree_dup(tree_node **, tree_node *);
640 extern int tree_insertnode(tree_node **, tree_node *);
641 extern tree_node *tree_search(tree_node *, const uschar *);
642 extern void tree_write(tree_node *, FILE *);
643 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
645 #ifdef WITH_CONTENT_SCAN
646 extern void unspool_mbox(void);
649 extern gstring *utf8_version_report(gstring *);
652 extern int vaguely_random_number(int);
654 extern int vaguely_random_number_fallback(int);
656 extern int verify_address(address_item *, FILE *, int, int, int, int,
657 uschar *, uschar *, BOOL *);
658 extern int verify_check_dnsbl(int, const uschar **, uschar **);
659 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
660 uschar *, uschar *, int, int *);
661 extern int verify_check_headers(uschar **);
662 extern int verify_check_header_names_ascii(uschar **);
663 extern int verify_check_host(uschar **);
664 extern int verify_check_notblind(BOOL);
665 extern int verify_check_given_host(const uschar **, const host_item *);
666 extern int verify_check_this_host(const uschar **, unsigned int *,
667 const uschar*, const uschar *, const uschar **);
668 extern address_item *verify_checked_sender(const uschar *);
669 extern void verify_get_ident(int);
670 extern void verify_quota(uschar *);
671 extern int verify_quota_call(const uschar *, int, int, uschar **);
672 extern BOOL verify_sender(int *, uschar **);
673 extern BOOL verify_sender_preliminary(int *, uschar **);
674 extern void version_init(void);
676 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
677 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
678 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
680 #ifdef EXPERIMENTAL_XCLIENT
681 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
682 extern gstring * xclient_smtp_advertise_str(gstring *);
684 extern uschar *xtextencode(uschar *, int);
685 extern int xtextdecode(uschar *, uschar **);
688 /******************************************************************************/
689 /* Predicate: if an address is in a tainted pool.
690 By extension, a variable pointing to this address is tainted.
694 is_tainted(const void * p)
696 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
700 extern BOOL is_tainted_fn(const void *);
701 return is_tainted_fn(p);
706 is_incompatible(const void * old, const void * new)
708 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
712 extern BOOL is_incompatible_fn(const void *, const void *);
713 return is_incompatible_fn(old, new);
717 /******************************************************************************/
718 /* String functions */
719 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
721 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
722 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
724 return US strcat(CS dst, CCS src);
726 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
728 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
729 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
731 return US strcpy(CS dst, CCS src);
733 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
735 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
736 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
738 return US strncat(CS dst, CCS src, n);
740 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
742 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
743 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
745 return US strncpy(CS dst, CCS src, n);
747 /*XXX will likely need unchecked copy also */
750 /* Advance the string pointer given over any whitespace.
751 Return the next char as there's enough places using it to be useful. */
753 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
755 static inline uschar skip_whitespace(const uschar ** sp)
756 { while (isspace(**sp)) (*sp)++; return **sp; }
758 /* Ditto, non-whitespace */
760 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
761 static inline uschar skip_nonwhite(const uschar ** sp)
762 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
765 /******************************************************************************/
767 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
768 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
769 chown(<exim-uid>, <exim-gid>).
771 Probably because the idmapping is broken, misconfigured or set up in
772 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
773 case of misconfiguration, or if there are more such broken systems
774 out, I try to impose as least impact as possible and for now just write
775 a panic log entry pointing to the bug report. You're encouraged to
776 contact the developers, if you experience this issue.
778 fd the file descriptor (or -1 if not valid)
779 name the file name for error messages or for file operations,
784 returns 0 on success, -1 on failure */
787 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
789 return fchown(fd, owner, group)
790 ? exim_chown_failure(fd, name, owner, group) : 0;
794 exim_chown(const uschar *name, uid_t owner, gid_t group)
796 return chown(CCS name, owner, group)
797 ? exim_chown_failure(-1, name, owner, group) : 0;
799 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
801 /******************************************************************************/
802 /* String functions */
804 #if !defined(MACRO_PREDEF)
805 /*************************************************
806 * Copy and save string *
807 *************************************************/
809 /* This function assumes that memcpy() is faster than strcpy().
810 The result is explicitly nul-terminated.
813 static inline uschar *
814 string_copyn_taint_trc(const uschar * s, unsigned len,
815 const void * proto_mem, const char * func, int line)
818 unsigned slen = Ustrlen(s);
819 if (len > slen) len = slen;
820 ss = store_get_3(len + 1, proto_mem, func, line);
826 static inline uschar *
827 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
828 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
830 static inline uschar *
831 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
832 { return string_copyn_taint_trc(s, len, s, func, line); }
833 static inline uschar *
834 string_copy_trc(const uschar * s, const char * func, int line)
835 { return string_copy_taint_trc(s, s, func, line); }
838 /* String-copy functions explicitly setting the taint status */
840 #define string_copyn_taint(s, len, proto_mem) \
841 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
842 #define string_copy_taint(s, proto_mem) \
843 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
845 /* Simple string-copy functions maintaining the taint */
847 #define string_copyn(s, len) \
848 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
849 #define string_copy(s) \
850 string_copy_trc((s), __FUNCTION__, __LINE__)
853 /*************************************************
854 * Copy, lowercase and save string *
855 *************************************************/
858 Argument: string to copy
859 Returns: copy of string in new store, with letters lowercased
862 static inline uschar *
863 string_copylc(const uschar * s)
865 uschar * ss = store_get(Ustrlen(s) + 1, s);
867 while (*s) *p++ = tolower(*s++);
874 /*************************************************
875 * Copy, lowercase, and save string, given length *
876 *************************************************/
878 /* It is assumed the data contains no zeros. A zero is added
883 n number of characters
885 Returns: copy of string in new store, with letters lowercased
888 static inline uschar *
889 string_copynlc(uschar * s, int n)
891 uschar * ss = store_get(n + 1, s);
893 while (n-- > 0) *p++ = tolower(*s++);
899 # ifndef COMPILE_UTILITY
900 /*************************************************
901 * Copy and save string in longterm store *
902 *************************************************/
904 /* This function assumes that memcpy() is faster than strcpy().
906 Argument: string to copy
907 Returns: copy of string in new store
910 static inline uschar *
911 string_copy_perm(const uschar *s, BOOL force_taint)
913 int old_pool = store_pool;
914 int len = Ustrlen(s) + 1;
917 store_pool = POOL_PERM;
918 ss = store_get(len, force_taint ? GET_TAINTED : s);
920 store_pool = old_pool;
927 /* sprintf into a buffer, taint-unchecked */
930 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
932 gstring gs = { .size = siz, .ptr = 0, .s = buf };
935 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
941 /******************************************************************************/
942 /* Growable-string functions */
944 /* Create a growable-string with some preassigned space */
946 #define string_get_tainted(size, proto_mem) \
947 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
949 static inline gstring *
950 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
952 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
953 g->size = size; /*XXX would be good if we could see the actual alloc size */
959 #define string_get(size) \
960 string_get_trc((size), __FUNCTION__, __LINE__)
962 static inline gstring *
963 string_get_trc(unsigned size, const char * func, unsigned line)
965 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
968 /* NUL-terminate the C string in the growable-string, and return it. */
970 static inline uschar *
971 string_from_gstring(gstring * g)
979 len_string_from_gstring(gstring * g, uschar ** sp)
994 static inline uschar *
995 string_copy_from_gstring(gstring * g)
997 return g ? string_copyn(g->s, g->ptr) : NULL;
1000 static inline unsigned
1001 gstring_length(const gstring * g)
1003 return g ? (unsigned)g->ptr : 0;
1006 static inline uschar
1007 gstring_last_char(gstring * g)
1009 return g->s[g->ptr-1];
1013 gstring_trim(gstring * g, unsigned amount)
1019 gstring_trim_trailing(gstring * g, uschar c)
1021 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1025 gstring_reset(gstring * g)
1031 #define gstring_release_unused(g) \
1032 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1035 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1037 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1041 /* plain string append to a growable-string */
1043 static inline gstring * string_cat(gstring * g, const uschar * s)
1046 static inline gstring *
1047 string_cat(gstring * g, const uschar * s)
1049 return string_catn(g, s, Ustrlen(s));
1053 /* sprintf-append to a growable-string */
1055 #define string_fmt_append(g, fmt, ...) \
1056 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1057 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1059 #define string_fmt_append_f(g, flgs, fmt, ...) \
1060 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1061 flgs, fmt, __VA_ARGS__)
1063 static inline gstring *
1064 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1065 unsigned flags, const char *format, ...)
1068 va_start(ap, format);
1069 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1076 /* Copy the content of a string to tainted memory. The proto_mem arg
1077 will always be tainted, and suitable as a prototype. */
1080 gstring_rebuffer(gstring * g, const void * proto_mem)
1082 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1083 memcpy(s, g->s, g->ptr);
1087 /* Append one gstring to another */
1089 static inline gstring *
1090 gstring_append(gstring * dest, gstring * item)
1092 return item ? string_catn(dest, item->s, item->ptr) : dest;
1096 # ifndef COMPILE_UTILITY
1097 /******************************************************************************/
1098 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1099 for them as the strings we proceed to copy from them meant they could not be
1100 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1101 we do have to take care over marking tainted all copied strings. A separate pool
1102 could be used and would handle that implicitly. */
1104 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1106 static inline dns_answer *
1107 store_get_dns_answer_trc(const uschar * func, unsigned line)
1109 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1112 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1115 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1117 store_free_3(dnsa, CCS func, line);
1121 /* Check for an RR being large enough. Return TRUE iff bad. */
1123 rr_bad_size(const dns_record * rr, size_t minbytes)
1125 return rr->size < minbytes;
1128 /* Check for an RR having further data beyond a given pointer.
1129 Return TRUE iff bad. */
1131 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1133 return rr_bad_size(rr, ptr - rr->data + minbytes);
1136 /******************************************************************************/
1137 /* Routines with knowledge of spool layout */
1140 spool_pname_buf(uschar * buf, int len)
1142 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1145 static inline uschar *
1146 spool_dname(const uschar * purpose, uschar * subdir)
1148 return string_sprintf("%s/%s/%s/%s",
1149 spool_directory, queue_name, purpose, subdir);
1153 static inline uschar *
1154 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1156 return string_sprintf("%s%s%s%s%s",
1159 *subdir ? "/" : "", subdir);
1162 static inline uschar *
1163 spool_sname(const uschar * purpose, const uschar * subdir)
1165 return spool_q_sname(purpose, queue_name, subdir);
1168 static inline uschar *
1169 spool_q_fname(const uschar * purpose, const uschar * q,
1170 const uschar * subdir, const uschar * fname, const uschar * suffix)
1172 return string_sprintf("%s/%s/%s/%s/%s%s",
1173 spool_directory, q, purpose, subdir, fname, suffix);
1176 static inline uschar *
1177 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1178 const uschar * suffix)
1180 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1181 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1182 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1183 uschar * buf = store_get(len, GET_UNTAINTED);
1184 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1185 spool_directory, queue_name, purpose, subdir, fname, suffix);
1188 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1193 set_subdir_str(uschar * subdir_str, const uschar * name,
1194 int search_sequence)
1196 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1197 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1198 subdir_str[1] = '\0';
1201 /******************************************************************************/
1202 /* Message-ID format transition knowlege */
1205 is_new_message_id(const uschar * id)
1207 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1211 is_old_message_id(const uschar * id)
1213 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1216 static inline unsigned
1217 spool_data_start_offset(const uschar * id)
1219 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1220 return SPOOL_DATA_START_OFFSET;
1223 /******************************************************************************/
1224 /* Time calculations */
1226 /* Diff two times (later, earlier) returning diff in 1st arg */
1228 timediff(struct timeval * later, const struct timeval * earlier)
1230 later->tv_sec -= earlier->tv_sec;
1231 if ((later->tv_usec -= earlier->tv_usec) < 0)
1234 later->tv_usec += 1000*1000;
1239 timesince(struct timeval * diff, const struct timeval * then)
1241 gettimeofday(diff, NULL);
1242 timediff(diff, then);
1245 static inline uschar *
1246 string_timediff(const struct timeval * diff)
1248 static uschar buf[16];
1250 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1251 return readconf_printtime((int)diff->tv_sec);
1253 snprintf(CS buf, sizeof(buf), "%u.%03us",
1254 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1259 static inline uschar *
1260 string_timesince(const struct timeval * then)
1262 struct timeval diff;
1263 timesince(&diff, then);
1264 return string_timediff(&diff);
1268 report_time_since(const struct timeval * t0, const uschar * where)
1270 # ifdef MEASURE_TIMING
1271 struct timeval diff;
1272 timesince(&diff, t0);
1273 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1274 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1280 testharness_pause_ms(int millisec)
1282 #ifndef MEASURE_TIMING
1283 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1287 /******************************************************************************/
1288 /* Taint-checked file opens */
1291 exim_open2(const char *pathname, int flags)
1293 if (!is_tainted(pathname)) return open(pathname, flags);
1294 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1299 exim_open(const char *pathname, int flags, mode_t mode)
1301 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1302 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1306 #ifdef EXIM_HAVE_OPENAT
1308 exim_openat(int dirfd, const char *pathname, int flags)
1310 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1311 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1316 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1318 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1319 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1325 static inline FILE *
1326 exim_fopen(const char *pathname, const char *mode)
1328 if (!is_tainted(pathname)) return fopen(pathname, mode);
1329 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1335 exim_opendir(const uschar * name)
1337 if (!is_tainted(name)) return opendir(CCS name);
1338 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1343 /******************************************************************************/
1344 # if !defined(COMPILE_UTILITY)
1346 /* We use the PID of the head process for a connection-id. Note that
1347 this is only for tracking a received connection and what it directly
1348 causes; there is no inttent to describe transport-initiated TCP connections.
1349 The value is intented to be a cookie usable for logging, and we might change
1350 the generator for it at any time. */
1353 set_connection_id(void)
1355 connection_id = string_sprintf("%lu", (u_long)getpid());
1359 /* Process manipulation */
1362 exim_fork(const unsigned char * purpose)
1365 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1366 if ((pid = fork()) == 0)
1368 f.daemon_listen = FALSE;
1369 process_purpose = purpose;
1370 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1374 testharness_pause_ms(100); /* let child work */
1375 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1382 child_open_exim(int * fdptr, const uschar * purpose)
1383 { return child_open_exim_function(fdptr, purpose); }
1386 child_open_exim2(int * fdptr, uschar * sender,
1387 uschar * sender_auth, const uschar * purpose)
1388 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1391 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1392 int *outfdptr, BOOL make_leader, const uschar * purpose)
1393 { return child_open_function(argv, envp, newumask, infdptr,
1394 outfdptr, make_leader, purpose);
1397 /* Return 1 if fd is usable per pollbits, else 0 */
1399 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1401 struct pollfd p = {.fd = fd, .events = pollbits};
1402 return poll(&p, 1, tmo_millisec);
1405 /******************************************************************************/
1406 /* Client-side smtp log string, for debug */
1409 smtp_debug_cmd_log_init(void)
1411 # ifndef DISABLE_CLIENT_CMD_LOG
1412 int old_pool = store_pool;
1413 store_pool = POOL_PERM;
1414 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1415 *client_cmd_log->s = '\0';
1416 store_pool = old_pool;
1422 smtp_debug_cmd(const uschar * buf, int mode)
1424 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1425 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1427 # ifndef DISABLE_CLIENT_CMD_LOG
1429 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1430 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1431 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1432 if (mode == SCMD_BUFFER)
1433 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1434 else if (mode == SCMD_MORE)
1435 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1436 store_pool = old_pool;
1442 /* This might be called both due to callout and then from delivery.
1443 Use memory that will not be released between those phases.
1446 smtp_debug_resp(const uschar * buf)
1448 # ifndef DISABLE_CLIENT_CMD_LOG
1449 int old_pool = store_pool;
1450 store_pool = POOL_PERM;
1451 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1452 buf[3] == '-' ? 4 : 3);
1453 store_pool = old_pool;
1459 smtp_debug_cmd_report(void)
1461 # ifndef DISABLE_CLIENT_CMD_LOG
1462 if (client_cmd_log && *client_cmd_log->s)
1464 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1465 gstring_reset(client_cmd_log);
1468 debug_printf("cmdlog: (unset)\n");
1475 expand_max_rcpt(const uschar * str_max_rcpt)
1477 const uschar * s = expand_cstring(str_max_rcpt);
1479 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1482 /******************************************************************************/
1483 /* Queue-runner operations */
1486 is_onetime_qrun(void)
1488 return qrunners && !qrunners->next && qrunners->interval == 0;
1492 is_multiple_qrun(void)
1494 return qrunners && (qrunners->interval > 0 || qrunners->next);
1498 # endif /* !COMPILE_UTILITY */
1500 /******************************************************************************/
1501 #endif /* !MACRO_PREDEF */
1503 #endif /* _FUNCTIONS_H_ */
1507 /* End of functions.h */