1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
7 /* See the file NOTICE for conditions of use and distribution. */
8 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 /* Prototypes for functions that appear in various modules. Gathered together
12 to avoid having a lot of tiddly little headers with only a couple of lines in
13 them. However, some functions that are used (or not used) by utility programs
14 are in in fact in separate headers. */
23 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
24 uschar **) WARN_UNUSED_RESULT;
25 extern void cleanup_perl(void);
26 extern uschar *init_perl(uschar *);
32 std_dh_prime_default(void);
34 std_dh_prime_named(const uschar *);
36 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
37 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
38 extern uschar * tls_cert_issuer(void *, uschar * mod);
39 extern uschar * tls_cert_not_before(void *, uschar * mod);
40 extern uschar * tls_cert_not_after(void *, uschar * mod);
41 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
42 extern uschar * tls_cert_serial_number(void *, uschar * mod);
43 extern uschar * tls_cert_signature(void *, uschar * mod);
44 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
45 extern uschar * tls_cert_subject(void *, uschar * mod);
46 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
47 extern uschar * tls_cert_version(void *, uschar * mod);
49 extern uschar * tls_cert_der_b64(void * cert);
50 extern uschar * tls_cert_fprt_md5(void *);
51 extern uschar * tls_cert_fprt_sha1(void *);
52 extern uschar * tls_cert_fprt_sha256(void *);
54 extern void tls_clean_env(void);
55 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
56 void *, tls_support *, uschar **);
57 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
58 const uschar *, uschar **);
59 extern void tls_client_creds_reload(BOOL);
61 extern void tls_close(void *, int);
62 extern BOOL tls_could_getc(void);
63 extern void tls_daemon_init(void);
64 extern int tls_daemon_tick(void);
65 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
66 extern BOOL tls_export_cert(uschar *, size_t, void *);
67 extern int tls_feof(void);
68 extern int tls_ferror(void);
69 extern uschar *tls_field_from_dn(uschar *, const uschar *);
70 extern void tls_free_cert(void **);
71 extern int tls_getc(unsigned);
72 extern uschar *tls_getbuf(unsigned *);
73 extern void tls_get_cache(unsigned);
74 extern BOOL tls_hasc(void);
75 extern BOOL tls_import_cert(const uschar *, void **);
76 extern BOOL tls_is_name_for_cert(const uschar *, void *);
78 extern BOOL tls_openssl_options_parse(uschar *, long *);
80 extern int tls_read(void *, uschar *, size_t);
81 extern int tls_server_start(uschar **);
82 extern void tls_shutdown_wr(void *);
83 extern BOOL tls_smtp_buffered(void);
84 extern int tls_ungetc(int);
85 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
86 extern void tls_watch_discard_event(int);
87 extern void tls_watch_invalidate(void);
89 extern int tls_write(void *, const uschar *, size_t, BOOL);
90 extern uschar *tls_validate_require_cipher(void);
91 extern gstring *tls_version_report(gstring *);
94 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
97 #endif /*DISABLE_TLS*/
100 /* Everything else... */
102 extern acl_block *acl_read(uschar *(*)(void), uschar **);
103 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
104 extern uschar *acl_current_verb(void);
105 extern int acl_eval(int, uschar *, uschar **, uschar **);
106 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
108 extern tree_node *acl_var_create(uschar *);
109 extern void acl_var_write(uschar *, uschar *, void *);
110 extern void add_driver_info(driver_info **, const driver_info *, size_t);
113 #ifdef EXPERIMENTAL_ARC
114 # ifdef SUPPORT_DMARC
115 extern gstring *arc_dmarc_hist_append(gstring *);
117 extern void *arc_ams_setup_sign_bodyhash(void);
118 extern const uschar *arc_header_feed(gstring *, BOOL);
119 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
120 extern void arc_sign_init(void);
121 extern const uschar *acl_verify_arc(void);
122 extern uschar * fn_arc_domains(void);
125 extern void assert_no_variables(void *, int, const char *, int);
126 extern int auth_call_pam(const uschar *, uschar **);
127 extern int auth_call_pwcheck(uschar *, uschar **);
128 extern int auth_call_radius(const uschar *, uschar **);
129 extern int auth_call_saslauthd(const uschar *, const uschar *,
130 const uschar *, const uschar *, uschar **);
131 extern int auth_check_serv_cond(auth_instance *);
132 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
133 extern int auth_client_item(void *, auth_instance *, const uschar **,
134 unsigned, int, uschar *, int);
137 extern int auth_get_data(uschar **, const uschar *, int);
138 extern int auth_get_no64_data(uschar **, uschar *);
139 extern int auth_prompt(const uschar *);
140 extern int auth_read_input(const uschar *);
141 extern gstring * auth_show_supported(gstring *);
142 extern uschar *authenticator_current_name(void);
144 #ifdef EXPERIMENTAL_ARC
145 extern gstring *authres_arc(gstring *);
148 extern gstring *authres_dkim(gstring *);
151 extern gstring *authres_dmarc(gstring *);
153 extern gstring *authres_smtpauth(gstring *);
155 extern uschar *b64encode(const uschar *, int);
156 extern uschar *b64encode_taint(const uschar *, int, const void *);
157 extern int b64decode(const uschar *, uschar **, const void *);
158 extern int bdat_getc(unsigned);
159 extern uschar *bdat_getbuf(unsigned *);
160 extern BOOL bdat_hasc(void);
161 extern int bdat_ungetc(int);
162 extern void bdat_flush_data(void);
164 extern void bits_clear(unsigned int *, size_t, int *);
165 extern void bits_set(unsigned int *, size_t, int *);
167 extern void cancel_cutthrough_connection(BOOL, const uschar *);
168 extern gstring *cat_file(FILE *, gstring *, uschar *);
169 extern gstring *cat_file_tls(void *, gstring *, uschar *);
170 extern int check_host(void *, const uschar *, const uschar **, uschar **);
171 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
172 extern pid_t child_open_exim_function(int *, const uschar *);
173 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
175 extern pid_t child_open_function(uschar **, uschar **, int,
176 int *, int *, BOOL, const uschar *);
177 extern pid_t child_open_uid(const uschar **, const uschar **, int,
178 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
179 extern BOOL cleanup_environment(void);
180 extern void cutthrough_data_puts(uschar *, int);
181 extern void cutthrough_data_put_nl(void);
182 extern uschar *cutthrough_finaldot(void);
183 extern BOOL cutthrough_flush_send(void);
184 extern BOOL cutthrough_headers_send(void);
185 extern BOOL cutthrough_predata(void);
186 extern void release_cutthrough_connection(const uschar *);
188 extern void daemon_go(void);
189 #ifndef COMPILE_UTILITY
190 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
191 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
194 #ifdef EXPERIMENTAL_DCC
195 extern int dcc_process(uschar **);
198 extern void debug_logging_activate(const uschar *, const uschar *);
199 extern void debug_logging_from_spool(const uschar *);
200 extern void debug_logging_stop(BOOL);
201 extern void debug_print_argv(const uschar **);
202 extern void debug_print_ids(uschar *);
203 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
204 extern void debug_print_string(uschar *);
205 extern void debug_print_tree(const char *, tree_node *);
206 extern void debug_vprintf(int, const char *, va_list);
207 extern void debug_pretrigger_setup(const uschar *);
208 extern void debug_pretrigger_discard(void);
209 extern void debug_print_socket(int);
210 extern void debug_trigger_fire(void);
212 extern void decode_bits(unsigned int *, size_t, int *,
213 const uschar *, bit_table *, int, uschar *, int);
214 extern void delete_pid_file(void);
215 extern void deliver_local(address_item *, BOOL);
216 extern address_item *deliver_make_addr(const uschar *, BOOL);
217 extern void delivery_log(int, address_item *, int, uschar *);
218 extern int deliver_message(const uschar *, BOOL, BOOL);
219 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
220 extern void deliver_set_expansions(address_item *);
221 extern int deliver_split_address(address_item *);
222 extern void deliver_succeeded(address_item *);
224 extern void delivery_re_exec(int);
226 extern void die_tainted(const uschar *, const uschar *, int);
227 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
229 extern uschar *dkim_exim_query_dns_txt(const uschar *);
230 extern void dkim_exim_sign_init(void);
232 extern BOOL dkim_transport_write_message(transport_ctx *,
233 struct ob_dkim *, const uschar ** errstr);
235 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
236 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
237 extern uschar *dns_build_reverse(const uschar *);
238 extern time_t dns_expire_from_soa(dns_answer *, int);
239 extern void dns_init(BOOL, BOOL, BOOL);
240 extern BOOL dns_is_aa(const dns_answer *);
241 extern BOOL dns_is_secure(const dns_answer *);
242 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
243 extern void dns_pattern_init(void);
244 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
245 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
246 extern uschar *dns_text_type(int);
247 extern void dscp_list_to_stream(FILE *);
248 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
250 extern void enq_end(uschar *);
251 extern BOOL enq_start(uschar *, unsigned);
252 #ifndef DISABLE_EVENT
253 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
254 extern void msg_event_raise(const uschar *, const address_item *);
257 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
258 extern const uschar * exim_errstr(int);
259 extern void exim_exit(int) NORETURN;
260 extern void exim_gettime(struct timeval *);
261 extern void exim_nullstd(void);
262 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
263 extern void exim_underbar_exit(int) NORETURN;
264 extern void exim_wait_tick(struct timeval *, int);
265 extern int exp_bool(address_item *,
266 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
267 const uschar *, BOOL *);
268 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
269 extern uschar *expand_file_big_buffer(const uschar *);
270 extern uschar *expand_string(uschar *); /* public, cannot make const */
271 extern const uschar *expand_string_2(const uschar *, BOOL *);
272 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
273 extern uschar *expand_getkeyed(const uschar *, const uschar *);
275 extern uschar *expand_hide_passwords(uschar * );
276 extern uschar *expand_string_copy(const uschar *);
277 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
278 extern void modify_variable(uschar *, void *);
280 extern BOOL fd_ready(int, time_t);
282 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
283 extern BOOL filter_personal(string_item *, BOOL);
284 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
285 extern BOOL filter_system_interpret(address_item **, uschar **);
287 extern uschar * fn_hdrs_added(void);
288 extern void force_fd(int, int);
290 extern void header_add(int, const char *, ...);
291 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
292 extern int header_checkname(header_line *, BOOL);
293 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
294 extern int host_address_extract_port(uschar *);
295 extern uschar *host_and_ident(BOOL);
296 extern int host_aton(const uschar *, int *);
297 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
298 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
299 extern void host_build_log_info(void);
300 extern void host_build_sender_fullhost(void);
301 extern int host_find_byname(host_item *, const uschar *, int,
302 const uschar **, BOOL);
303 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
304 uschar *, const dnssec_domains *, const uschar **, BOOL *);
305 extern ip_address_item *host_find_interfaces(void);
306 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
307 extern BOOL host_is_tls_on_connect_port(int);
308 extern int host_item_get_port(host_item *);
309 extern void host_mask(int, int *, int);
310 extern int host_name_lookup(void);
311 extern int host_nmtoa(int, const int *, int, uschar *, int);
312 extern uschar *host_ntoa(int, const void *, uschar *, int *);
313 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
315 extern uschar *imap_utf7_encode(uschar *, const uschar *,
316 uschar, uschar *, uschar **);
318 extern void invert_address(uschar *, uschar *);
319 extern int ip_addr(void *, int, const uschar *, int);
320 extern int ip_bind(int, int, uschar *, int);
321 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
322 extern int ip_connectedsocket(int, const uschar *, int, int,
323 int, host_item *, uschar **, const blob *);
324 extern int ip_get_address_family(int);
325 extern void ip_keepalive(int, const uschar *, BOOL);
326 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
327 extern int ip_socket(int, int);
329 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
330 extern int ip_unixsocket(const uschar *, uschar **);
331 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
333 extern int ipv6_nmtoa(int *, uschar *);
335 extern const uschar *local_part_quote(const uschar *);
336 extern int log_open_as_exim(const uschar * const);
337 extern void log_close_all(void);
338 extern const lookup_info * lookup_with_acq_num(unsigned);
339 #ifdef LOOKUP_MODULE_DIR
340 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
344 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
345 extern BOOL macro_read_assignment(uschar *);
346 extern uschar *macros_expand(int, int *, BOOL *);
347 extern void mainlog_close(void);
348 #ifdef WITH_CONTENT_SCAN
349 extern int malware(const uschar *, BOOL, int);
350 extern int malware_in_file(const uschar *);
351 extern void malware_init(void);
352 extern gstring * malware_show_supported(gstring *);
354 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
355 unsigned int *, int, int, const uschar **);
356 extern int match_address_list_basic(const uschar *, const uschar **, int);
357 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
358 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
359 const uschar *, const uschar **);
360 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
361 unsigned int *, int, BOOL, const uschar **);
362 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
365 extern void message_start(void);
366 extern void message_tidyup(void);
367 extern void md5_end(md5 *, const uschar *, int, uschar *);
368 extern void md5_mid(md5 *, const uschar *);
369 extern void md5_start(md5 *);
370 extern void millisleep(int);
371 #ifdef WITH_CONTENT_SCAN
372 struct mime_boundary_context;
373 extern int mime_acl_check(uschar *acl, FILE *f,
374 struct mime_boundary_context *, uschar **, uschar **);
375 extern int mime_decode(const uschar **);
376 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
377 extern int mime_regex(const uschar **, BOOL);
378 extern void mime_set_anomaly(int);
380 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
381 extern misc_module_info * misc_mod_findonly(const uschar * modname);
382 extern uschar *moan_check_errorcopy(const uschar *);
383 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
385 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
386 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
387 header_line *, FILE *, uschar *);
388 extern void moan_tell_someone(uschar *, address_item *,
389 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
390 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
391 extern void moan_write_from(FILE *);
392 extern void moan_write_references(FILE *, uschar *);
393 #ifdef LOOKUP_MODULE_DIR
394 //extern void mod_load_check(const uschar *);
396 extern FILE *modefopen(const uschar *, const char *, mode_t);
398 extern int open_cutthrough_connection( address_item * addr );
400 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
402 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
403 const uschar *, const uschar *, error_block **);
404 extern uschar *parse_find_address_end(const uschar *, BOOL);
405 extern const uschar *parse_find_at(const uschar *);
406 extern const uschar *parse_fix_phrase(const uschar *, int);
407 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
408 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
410 extern const uschar *parse_date_time(const uschar *str, time_t *t);
411 extern void priv_drop_temp(const uid_t, const gid_t);
412 extern void priv_restore(void);
414 extern BOOL proxy_protocol_host(void);
415 extern void proxy_protocol_setup(void);
418 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
419 extern void queue_check_only(void);
420 extern unsigned queue_count(void);
421 extern unsigned queue_count_cached(void);
422 extern void queue_list(int, const uschar **, int);
423 #ifndef DISABLE_QUEUE_RAMP
424 extern void queue_notify_daemon(const uschar * hostname);
426 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
428 extern int random_number(int);
429 extern const uschar *rc_to_string(int);
430 extern int rda_interpret(redirect_block *, int, const uschar *,
431 const sieve_block *, const ugid_block *, address_item **,
432 uschar **, error_block **, int *, const uschar *);
433 extern int rda_is_filter(const uschar *);
434 extern BOOL readconf_depends(driver_instance *, uschar *);
435 extern void readconf_driver_init(driver_instance **, driver_info **, int,
436 void *, int, optionlist *, int, const uschar *);
437 extern const uschar *readconf_find_option(void *);
438 extern void readconf_main(BOOL);
439 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
440 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
441 extern uschar *readconf_printtime(int);
442 extern const uschar *readconf_readname(uschar *, int, const uschar *);
443 extern int readconf_readtime(const uschar *, int, BOOL);
444 extern void readconf_rest(void);
445 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
446 extern void readconf_save_config(const uschar *);
447 extern void read_message_body(BOOL);
448 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
449 extern BOOL receive_check_fs(int);
450 extern BOOL receive_check_set_sender(const uschar *);
451 extern BOOL receive_msg(BOOL);
452 extern int_eximarith_t receive_statvfs(BOOL, int *);
453 extern void receive_swallow_smtp(void);
454 extern int recv_fd_from_sock(int);
455 #ifdef WITH_CONTENT_SCAN
456 extern int regex(const uschar **, BOOL);
457 extern void regex_vars_clear(void);
459 extern void regex_at_daemon(const uschar *);
460 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
461 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
462 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
463 pcre2_compile_context *);
464 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
466 extern void retry_add_item(address_item *, const uschar *, int);
467 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
468 const uschar **, const uschar **);
469 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
470 extern const uschar *retry_host_key_build(const host_item *, BOOL,
472 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
473 dbdata_retry *, time_t);
474 extern void retry_update(address_item **, address_item **, address_item **);
475 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
476 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
477 extern header_line *rewrite_header(header_line *,
478 const uschar *, const uschar *,
479 rewrite_rule *, int, BOOL);
480 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
482 extern void rewrite_test(const uschar *);
483 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
485 extern int route_address(address_item *, address_item **, address_item **,
486 address_item **, address_item **, int);
487 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
488 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
489 extern BOOL route_findgroup(uschar *, gid_t *);
490 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
491 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
493 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
494 struct passwd **, uid_t *, uschar **);
495 extern void route_init(void);
496 extern gstring * route_show_supported(gstring *);
497 extern void route_tidyup(void);
498 extern uschar *router_current_name(void);
500 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
502 extern uschar *search_find(void *, const uschar *, const uschar *, int,
503 const uschar *, int, int, int *, const uschar *);
504 extern const lookup_info * search_findtype(const uschar *, int);
505 extern const lookup_info * search_findtype_partial(const uschar *, int *,
506 const uschar **, int *, int *, const uschar **);
507 extern void *search_open(const uschar *, const lookup_info *, int,
509 extern void search_tidyup(void);
510 extern BOOL send_fd_over_socket(int, int);
511 extern uschar *sender_helo_verified_boolstr(void);
512 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
513 extern void sha1_end(hctx *, const uschar *, int, uschar *);
514 extern void sha1_mid(hctx *, const uschar *);
515 extern void sha1_start(hctx *);
516 extern int sieve_interpret(const uschar *, int, const sieve_block *,
517 address_item **, uschar **);
518 extern void sigalrm_handler(int);
519 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
520 extern int smtp_boundsock(smtp_connect_args *);
521 extern void smtp_closedown(uschar *);
522 extern void smtp_command_timeout_exit(void) NORETURN;
523 extern void smtp_command_sigterm_exit(void) NORETURN;
524 extern void smtp_data_timeout_exit(void) NORETURN;
525 extern void smtp_data_sigint_exit(void) NORETURN;
526 extern void smtp_deliver_init(void);
527 extern uschar *smtp_cmd_hist(void);
528 extern int smtp_connect(smtp_connect_args *, const blob *);
529 extern int smtp_feof(void);
530 extern int smtp_ferror(void);
531 extern uschar *smtp_get_connection_info(void);
532 extern BOOL smtp_get_interface(uschar *, int, address_item *,
533 uschar **, uschar *);
534 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
535 extern int smtp_getc(unsigned);
536 extern uschar *smtp_getbuf(unsigned *);
537 extern void smtp_get_cache(unsigned);
538 extern BOOL smtp_hasc(void);
539 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
540 extern void smtp_log_no_mail(void);
541 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
542 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
543 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
544 extern void *smtp_reset(void *);
545 extern void smtp_respond(uschar *, int, BOOL, uschar *);
546 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
547 extern void smtp_port_for_connect(host_item *, int);
548 extern void smtp_send_prohibition_message(int, uschar *);
549 extern int smtp_setup_msg(void);
550 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
551 extern BOOL smtp_start_session(void);
552 extern int smtp_ungetc(int);
553 extern BOOL smtp_verify_helo(void);
554 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
555 #ifdef WITH_CONTENT_SCAN
556 extern int spam(const uschar **);
557 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
559 extern void spool_clear_header_globals(void);
560 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
561 extern int spool_open_datafile(const uschar *);
562 extern int spool_open_temp(uschar *);
563 extern int spool_read_header(uschar *, BOOL, BOOL);
564 extern uschar *spool_sender_from_msgid(const uschar *);
565 extern int spool_write_header(const uschar *, int, uschar **);
566 extern int stdin_getc(unsigned);
567 extern int stdin_feof(void);
568 extern int stdin_ferror(void);
569 extern BOOL stdin_hasc(void);
570 extern int stdin_ungetc(int);
572 extern void stackdump(void);
573 extern void store_exit(void);
574 extern void store_init(void);
575 extern void store_writeprotect(int);
577 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
578 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
579 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
580 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
581 extern uschar *string_base62_32(unsigned long int);
582 extern uschar *string_base62_64(unsigned long int);
583 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
584 extern int string_compare_by_pointer(const void *, const void *);
585 extern uschar *string_copy_dnsdomain(uschar *);
586 extern uschar *string_copy_malloc(const uschar *);
587 extern uschar *string_dequote(const uschar **);
588 extern uschar *string_format_size(int, uschar *);
589 extern int string_interpret_escape(const uschar **);
590 extern int string_is_ip_address(const uschar *, int *);
591 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
593 extern BOOL string_is_utf8(const uschar *);
595 extern const uschar *string_printing2(const uschar *, int);
596 extern uschar *string_split_message(uschar *);
597 extern uschar *string_unprinting(uschar *);
599 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
600 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
601 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
602 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
603 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
606 #define string_format(buf, siz, fmt, ...) \
607 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
608 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
609 const char *, ...) ALMOST_PRINTF(5,6);
611 #define string_vformat(g, flgs, fmt, ap) \
612 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
613 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
614 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
615 unsigned, unsigned, const char *, va_list);
617 #define string_open_failed(fmt, ...) \
618 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
619 extern uschar *string_open_failed_trc(const uschar *, unsigned,
620 const char *, ...) PRINTF_FUNCTION(3,4);
622 #define string_nextinlist(lp, sp, b, l) \
623 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
624 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
625 const uschar * func, int line);
627 extern int strcmpic(const uschar *, const uschar *);
628 extern int strncmpic(const uschar *, const uschar *, int);
629 extern uschar *strstric(uschar *, uschar *, BOOL);
630 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
632 extern int test_harness_fudged_queue_time(int);
633 extern void tcp_init(void);
634 #ifdef EXIM_TFO_PROBE
635 extern void tfo_probe(void);
637 extern void tls_modify_variables(tls_support *);
638 extern uschar *tod_stamp(int);
640 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
642 extern uschar *transport_current_name(void);
643 extern void transport_do_pass_socket(const uschar *, const uschar *,
644 const uschar *, uschar *, int);
645 extern void transport_init(void);
646 extern const uschar *transport_rcpt_address(address_item *, BOOL);
647 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
648 unsigned, int, address_item *, const uschar *, uschar **);
649 extern void transport_update_waiting(host_item *, const uschar *);
650 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
651 extern void transport_write_reset(int);
652 extern BOOL transport_write_string(int, const char *, ...);
653 extern BOOL transport_headers_send(transport_ctx *,
654 BOOL (*)(transport_ctx *, const uschar *, int));
655 extern gstring * transport_show_supported(gstring *);
656 extern BOOL transport_write_message(transport_ctx *, int);
657 extern void tree_add_duplicate(const uschar *, address_item *);
658 extern void tree_add_nonrecipient(const uschar *);
659 extern void tree_add_unusable(const host_item *);
660 extern void tree_dup(tree_node **, tree_node *);
661 extern int tree_insertnode(tree_node **, tree_node *);
662 extern tree_node *tree_search(tree_node *, const uschar *);
663 extern void tree_write(tree_node *, FILE *);
664 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
666 #ifdef WITH_CONTENT_SCAN
667 extern void unspool_mbox(void);
670 extern gstring *utf8_version_report(gstring *);
673 extern int vaguely_random_number(int);
675 extern int vaguely_random_number_fallback(int);
677 extern int verify_address(address_item *, FILE *, int, int, int, int,
678 uschar *, uschar *, BOOL *);
679 extern int verify_check_dnsbl(int, const uschar **, uschar **);
680 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
681 uschar *, uschar *, int, int *);
682 extern int verify_check_headers(uschar **);
683 extern int verify_check_header_names_ascii(uschar **);
684 extern int verify_check_host(uschar **);
685 extern int verify_check_notblind(BOOL);
686 extern int verify_check_given_host(const uschar **, const host_item *);
687 extern int verify_check_this_host(const uschar **, unsigned int *,
688 const uschar*, const uschar *, const uschar **);
689 extern address_item *verify_checked_sender(const uschar *);
690 extern void verify_get_ident(int);
691 extern void verify_quota(uschar *);
692 extern int verify_quota_call(const uschar *, int, int, uschar **);
693 extern BOOL verify_sender(int *, uschar **);
694 extern BOOL verify_sender_preliminary(int *, uschar **);
695 extern void version_init(void);
697 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
698 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
699 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
701 #ifdef EXPERIMENTAL_XCLIENT
702 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
703 extern gstring * xclient_smtp_advertise_str(gstring *);
705 extern uschar *xtextencode(uschar *, int);
706 extern int xtextdecode(uschar *, uschar **);
709 /******************************************************************************/
710 /* Predicate: if an address is in a tainted pool.
711 By extension, a variable pointing to this address is tainted.
715 is_tainted(const void * p)
717 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
721 extern BOOL is_tainted_fn(const void *);
722 return is_tainted_fn(p);
727 is_incompatible(const void * old, const void * new)
729 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
733 extern BOOL is_incompatible_fn(const void *, const void *);
734 return is_incompatible_fn(old, new);
738 /******************************************************************************/
739 /* String functions */
740 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
742 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
743 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
745 return US strcat(CS dst, CCS src);
747 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
749 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
750 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
752 return US strcpy(CS dst, CCS src);
754 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
756 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
757 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
759 return US strncat(CS dst, CCS src, n);
761 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
763 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
764 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
766 return US strncpy(CS dst, CCS src, n);
768 /*XXX will likely need unchecked copy also */
771 /* Advance the string pointer given over any whitespace.
772 Return the next char as there's enough places using it to be useful. */
774 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
776 static inline uschar skip_whitespace(const uschar ** sp)
777 { while (isspace(**sp)) (*sp)++; return **sp; }
779 /* Ditto, non-whitespace */
781 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
782 static inline uschar skip_nonwhite(const uschar ** sp)
783 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
786 /******************************************************************************/
788 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
789 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
790 chown(<exim-uid>, <exim-gid>).
792 Probably because the idmapping is broken, misconfigured or set up in
793 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
794 case of misconfiguration, or if there are more such broken systems
795 out, I try to impose as least impact as possible and for now just write
796 a panic log entry pointing to the bug report. You're encouraged to
797 contact the developers, if you experience this issue.
799 fd the file descriptor (or -1 if not valid)
800 name the file name for error messages or for file operations,
805 returns 0 on success, -1 on failure */
808 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
810 return fchown(fd, owner, group)
811 ? exim_chown_failure(fd, name, owner, group) : 0;
815 exim_chown(const uschar *name, uid_t owner, gid_t group)
817 return chown(CCS name, owner, group)
818 ? exim_chown_failure(-1, name, owner, group) : 0;
820 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
822 /******************************************************************************/
823 /* String functions */
825 #if !defined(MACRO_PREDEF)
826 /*************************************************
827 * Copy and save string *
828 *************************************************/
830 /* This function assumes that memcpy() is faster than strcpy().
831 The result is explicitly nul-terminated.
834 static inline uschar *
835 string_copyn_taint_trc(const uschar * s, unsigned len,
836 const void * proto_mem, const char * func, int line)
839 unsigned slen = Ustrlen(s);
840 if (len > slen) len = slen;
841 ss = store_get_3(len + 1, proto_mem, func, line);
847 static inline uschar *
848 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
849 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
851 static inline uschar *
852 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
853 { return string_copyn_taint_trc(s, len, s, func, line); }
854 static inline uschar *
855 string_copy_trc(const uschar * s, const char * func, int line)
856 { return string_copy_taint_trc(s, s, func, line); }
859 /* String-copy functions explicitly setting the taint status */
861 #define string_copyn_taint(s, len, proto_mem) \
862 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
863 #define string_copy_taint(s, proto_mem) \
864 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
866 /* Simple string-copy functions maintaining the taint */
868 #define string_copyn(s, len) \
869 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
870 #define string_copy(s) \
871 string_copy_trc((s), __FUNCTION__, __LINE__)
874 /*************************************************
875 * Copy, lowercase and save string *
876 *************************************************/
879 Argument: string to copy
880 Returns: copy of string in new store, with letters lowercased
883 static inline uschar *
884 string_copylc(const uschar * s)
886 uschar * ss = store_get(Ustrlen(s) + 1, s);
888 while (*s) *p++ = tolower(*s++);
895 /*************************************************
896 * Copy, lowercase, and save string, given length *
897 *************************************************/
899 /* It is assumed the data contains no zeros. A zero is added
904 n number of characters
906 Returns: copy of string in new store, with letters lowercased
909 static inline uschar *
910 string_copynlc(uschar * s, int n)
912 uschar * ss = store_get(n + 1, s);
914 while (n-- > 0) *p++ = tolower(*s++);
920 # ifndef COMPILE_UTILITY
921 /*************************************************
922 * Copy and save string in longterm store *
923 *************************************************/
925 /* This function assumes that memcpy() is faster than strcpy().
927 Argument: string to copy
928 Returns: copy of string in new store
931 static inline uschar *
932 string_copy_perm(const uschar *s, BOOL force_taint)
934 int old_pool = store_pool;
935 int len = Ustrlen(s) + 1;
938 store_pool = POOL_PERM;
939 ss = store_get(len, force_taint ? GET_TAINTED : s);
941 store_pool = old_pool;
948 /* sprintf into a buffer, taint-unchecked */
951 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
953 gstring gs = { .size = siz, .ptr = 0, .s = buf };
956 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
962 /******************************************************************************/
963 /* Growable-string functions */
965 /* Create a growable-string with some preassigned space */
967 #define string_get_tainted(size, proto_mem) \
968 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
970 static inline gstring *
971 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
973 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
974 g->size = size; /*XXX would be good if we could see the actual alloc size */
980 #define string_get(size) \
981 string_get_trc((size), __FUNCTION__, __LINE__)
983 static inline gstring *
984 string_get_trc(unsigned size, const char * func, unsigned line)
986 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
989 /* NUL-terminate the C string in the growable-string, and return it. */
991 static inline uschar *
992 string_from_gstring(gstring * g)
1000 len_string_from_gstring(gstring * g, uschar ** sp)
1005 g->s[g->ptr] = '\0';
1015 static inline uschar *
1016 string_copy_from_gstring(gstring * g)
1018 return g ? string_copyn(g->s, g->ptr) : NULL;
1021 static inline unsigned
1022 gstring_length(const gstring * g)
1024 return g ? (unsigned)g->ptr : 0;
1027 static inline uschar
1028 gstring_last_char(gstring * g)
1030 return g->s[g->ptr-1];
1034 gstring_trim(gstring * g, unsigned amount)
1040 gstring_trim_trailing(gstring * g, uschar c)
1042 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1046 gstring_reset(gstring * g)
1052 #define gstring_release_unused(g) \
1053 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1056 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1058 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1062 /* plain string append to a growable-string */
1064 static inline gstring * string_cat(gstring * g, const uschar * s)
1067 static inline gstring *
1068 string_cat(gstring * g, const uschar * s)
1070 return string_catn(g, s, Ustrlen(s));
1074 /* sprintf-append to a growable-string */
1076 #define string_fmt_append(g, fmt, ...) \
1077 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1078 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1080 #define string_fmt_append_f(g, flgs, fmt, ...) \
1081 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1082 flgs, fmt, __VA_ARGS__)
1084 static inline gstring *
1085 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1086 unsigned flags, const char *format, ...)
1089 va_start(ap, format);
1090 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1097 /* Copy the content of a string to tainted memory. The proto_mem arg
1098 will always be tainted, and suitable as a prototype. */
1101 gstring_rebuffer(gstring * g, const void * proto_mem)
1103 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1104 memcpy(s, g->s, g->ptr);
1108 /* Append one gstring to another */
1110 static inline gstring *
1111 gstring_append(gstring * dest, gstring * item)
1113 return string_catn(dest, item->s, item->ptr);
1117 # ifndef COMPILE_UTILITY
1118 /******************************************************************************/
1119 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1120 for them as the strings we proceed to copy from them meant they could not be
1121 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1122 we do have to take care over marking tainted all copied strings. A separate pool
1123 could be used and would handle that implicitly. */
1125 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1127 static inline dns_answer *
1128 store_get_dns_answer_trc(const uschar * func, unsigned line)
1130 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1133 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1136 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1138 store_free_3(dnsa, CCS func, line);
1142 /* Check for an RR being large enough. Return TRUE iff bad. */
1144 rr_bad_size(const dns_record * rr, size_t minbytes)
1146 return rr->size < minbytes;
1149 /* Check for an RR having further data beyond a given pointer.
1150 Return TRUE iff bad. */
1152 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1154 return rr_bad_size(rr, ptr - rr->data + minbytes);
1157 /******************************************************************************/
1158 /* Routines with knowledge of spool layout */
1161 spool_pname_buf(uschar * buf, int len)
1163 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1166 static inline uschar *
1167 spool_dname(const uschar * purpose, uschar * subdir)
1169 return string_sprintf("%s/%s/%s/%s",
1170 spool_directory, queue_name, purpose, subdir);
1174 static inline uschar *
1175 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1177 return string_sprintf("%s%s%s%s%s",
1180 *subdir ? "/" : "", subdir);
1183 static inline uschar *
1184 spool_sname(const uschar * purpose, const uschar * subdir)
1186 return spool_q_sname(purpose, queue_name, subdir);
1189 static inline uschar *
1190 spool_q_fname(const uschar * purpose, const uschar * q,
1191 const uschar * subdir, const uschar * fname, const uschar * suffix)
1193 return string_sprintf("%s/%s/%s/%s/%s%s",
1194 spool_directory, q, purpose, subdir, fname, suffix);
1197 static inline uschar *
1198 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1199 const uschar * suffix)
1201 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1202 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1203 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1204 uschar * buf = store_get(len, GET_UNTAINTED);
1205 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1206 spool_directory, queue_name, purpose, subdir, fname, suffix);
1209 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1214 set_subdir_str(uschar * subdir_str, const uschar * name,
1215 int search_sequence)
1217 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1218 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1219 subdir_str[1] = '\0';
1222 /******************************************************************************/
1223 /* Message-ID format transition knowlege */
1226 is_new_message_id(const uschar * id)
1228 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1232 is_old_message_id(const uschar * id)
1234 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1237 static inline unsigned
1238 spool_data_start_offset(const uschar * id)
1240 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1241 return SPOOL_DATA_START_OFFSET;
1244 /******************************************************************************/
1245 /* Time calculations */
1247 /* Diff two times (later, earlier) returning diff in 1st arg */
1249 timediff(struct timeval * later, const struct timeval * earlier)
1251 later->tv_sec -= earlier->tv_sec;
1252 if ((later->tv_usec -= earlier->tv_usec) < 0)
1255 later->tv_usec += 1000*1000;
1260 timesince(struct timeval * diff, const struct timeval * then)
1262 gettimeofday(diff, NULL);
1263 timediff(diff, then);
1266 static inline uschar *
1267 string_timediff(const struct timeval * diff)
1269 static uschar buf[16];
1271 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1272 return readconf_printtime((int)diff->tv_sec);
1274 snprintf(CS buf, sizeof(buf), "%u.%03us",
1275 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1280 static inline uschar *
1281 string_timesince(const struct timeval * then)
1283 struct timeval diff;
1284 timesince(&diff, then);
1285 return string_timediff(&diff);
1289 report_time_since(const struct timeval * t0, const uschar * where)
1291 # ifdef MEASURE_TIMING
1292 struct timeval diff;
1293 timesince(&diff, t0);
1294 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1295 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1301 testharness_pause_ms(int millisec)
1303 #ifndef MEASURE_TIMING
1304 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1308 /******************************************************************************/
1309 /* Taint-checked file opens */
1312 exim_open2(const char *pathname, int flags)
1314 if (!is_tainted(pathname)) return open(pathname, flags);
1315 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1320 exim_open(const char *pathname, int flags, mode_t mode)
1322 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1323 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1327 #ifdef EXIM_HAVE_OPENAT
1329 exim_openat(int dirfd, const char *pathname, int flags)
1331 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1332 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1337 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1339 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1340 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1346 static inline FILE *
1347 exim_fopen(const char *pathname, const char *mode)
1349 if (!is_tainted(pathname)) return fopen(pathname, mode);
1350 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1356 exim_opendir(const uschar * name)
1358 if (!is_tainted(name)) return opendir(CCS name);
1359 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1364 /******************************************************************************/
1365 # if !defined(COMPILE_UTILITY)
1367 /* We use the PID of the head process for a connection-id. Note that
1368 this is only for tracking a received connection and what it directly
1369 causes; there is no inttent to describe transport-initiated TCP connections.
1370 The value is intented to be a cookie usable for logging, and we might change
1371 the generator for it at any time. */
1374 set_connection_id(void)
1376 connection_id = string_sprintf("%lu", (u_long)getpid());
1380 /* Process manipulation */
1383 exim_fork(const unsigned char * purpose)
1386 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1387 if ((pid = fork()) == 0)
1389 f.daemon_listen = FALSE;
1390 process_purpose = purpose;
1391 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1395 testharness_pause_ms(100); /* let child work */
1396 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1403 child_open_exim(int * fdptr, const uschar * purpose)
1404 { return child_open_exim_function(fdptr, purpose); }
1407 child_open_exim2(int * fdptr, uschar * sender,
1408 uschar * sender_auth, const uschar * purpose)
1409 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1412 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1413 int *outfdptr, BOOL make_leader, const uschar * purpose)
1414 { return child_open_function(argv, envp, newumask, infdptr,
1415 outfdptr, make_leader, purpose);
1418 /* Return 1 if fd is usable per pollbits, else 0 */
1420 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1422 struct pollfd p = {.fd = fd, .events = pollbits};
1423 return poll(&p, 1, tmo_millisec);
1426 /******************************************************************************/
1427 /* Client-side smtp log string, for debug */
1430 smtp_debug_cmd_log_init(void)
1432 # ifndef DISABLE_CLIENT_CMD_LOG
1433 int old_pool = store_pool;
1434 store_pool = POOL_PERM;
1435 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1436 *client_cmd_log->s = '\0';
1437 store_pool = old_pool;
1443 smtp_debug_cmd(const uschar * buf, int mode)
1445 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1446 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1448 # ifndef DISABLE_CLIENT_CMD_LOG
1450 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1451 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1452 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1453 if (mode == SCMD_BUFFER)
1454 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1455 else if (mode == SCMD_MORE)
1456 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1457 store_pool = old_pool;
1463 /* This might be called both due to callout and then from delivery.
1464 Use memory that will not be released between those phases.
1467 smtp_debug_resp(const uschar * buf)
1469 # ifndef DISABLE_CLIENT_CMD_LOG
1470 int old_pool = store_pool;
1471 store_pool = POOL_PERM;
1472 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1473 buf[3] == '-' ? 4 : 3);
1474 store_pool = old_pool;
1480 smtp_debug_cmd_report(void)
1482 # ifndef DISABLE_CLIENT_CMD_LOG
1483 if (client_cmd_log && *client_cmd_log->s)
1485 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1486 gstring_reset(client_cmd_log);
1489 debug_printf("cmdlog: (unset)\n");
1496 expand_max_rcpt(const uschar * str_max_rcpt)
1498 const uschar * s = expand_cstring(str_max_rcpt);
1500 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1503 /******************************************************************************/
1504 /* Queue-runner operations */
1507 is_onetime_qrun(void)
1509 return qrunners && !qrunners->next && qrunners->interval == 0;
1513 is_multiple_qrun(void)
1515 return qrunners && (qrunners->interval > 0 || qrunners->next);
1519 # endif /* !COMPILE_UTILITY */
1521 /******************************************************************************/
1522 #endif /* !MACRO_PREDEF */
1524 #endif /* _FUNCTIONS_H_ */
1528 /* End of functions.h */