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 *);
111 #ifdef EXPERIMENTAL_ARC
112 # ifdef SUPPORT_DMARC
113 extern gstring *arc_dmarc_hist_append(gstring *);
115 extern void *arc_ams_setup_sign_bodyhash(void);
116 extern const uschar *arc_header_feed(gstring *, BOOL);
117 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
118 extern void arc_sign_init(void);
119 extern const uschar *acl_verify_arc(void);
120 extern uschar * fn_arc_domains(void);
123 extern void assert_no_variables(void *, int, const char *, int);
124 extern int auth_call_pam(const uschar *, uschar **);
125 extern int auth_call_pwcheck(uschar *, uschar **);
126 extern int auth_call_radius(const uschar *, uschar **);
127 extern int auth_call_saslauthd(const uschar *, const uschar *,
128 const uschar *, const uschar *, uschar **);
129 extern int auth_check_serv_cond(auth_instance *);
130 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
131 extern int auth_client_item(void *, auth_instance *, const uschar **,
132 unsigned, int, uschar *, int);
135 extern int auth_get_data(uschar **, const uschar *, int);
136 extern int auth_get_no64_data(uschar **, uschar *);
137 extern int auth_prompt(const uschar *);
138 extern int auth_read_input(const uschar *);
139 extern gstring * auth_show_supported(gstring *);
140 extern uschar *authenticator_current_name(void);
142 #ifdef EXPERIMENTAL_ARC
143 extern gstring *authres_arc(gstring *);
146 extern gstring *authres_dkim(gstring *);
149 extern gstring *authres_dmarc(gstring *);
151 extern gstring *authres_smtpauth(gstring *);
153 extern gstring *authres_spf(gstring *);
156 extern uschar *b64encode(const uschar *, int);
157 extern uschar *b64encode_taint(const uschar *, int, const void *);
158 extern int b64decode(const uschar *, uschar **, const void *);
159 extern int bdat_getc(unsigned);
160 extern uschar *bdat_getbuf(unsigned *);
161 extern BOOL bdat_hasc(void);
162 extern int bdat_ungetc(int);
163 extern void bdat_flush_data(void);
165 extern void bits_clear(unsigned int *, size_t, int *);
166 extern void bits_set(unsigned int *, size_t, int *);
168 extern void cancel_cutthrough_connection(BOOL, const uschar *);
169 extern gstring *cat_file(FILE *, gstring *, uschar *);
170 extern gstring *cat_file_tls(void *, gstring *, uschar *);
171 extern int check_host(void *, const uschar *, const uschar **, uschar **);
172 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
173 extern pid_t child_open_exim_function(int *, const uschar *);
174 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
176 extern pid_t child_open_function(uschar **, uschar **, int,
177 int *, int *, BOOL, const uschar *);
178 extern pid_t child_open_uid(const uschar **, const uschar **, int,
179 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
180 extern BOOL cleanup_environment(void);
181 extern void cutthrough_data_puts(uschar *, int);
182 extern void cutthrough_data_put_nl(void);
183 extern uschar *cutthrough_finaldot(void);
184 extern BOOL cutthrough_flush_send(void);
185 extern BOOL cutthrough_headers_send(void);
186 extern BOOL cutthrough_predata(void);
187 extern void release_cutthrough_connection(const uschar *);
189 extern void daemon_go(void);
190 #ifndef COMPILE_UTILITY
191 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
192 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
195 #ifdef EXPERIMENTAL_DCC
196 extern int dcc_process(uschar **);
199 extern void debug_logging_activate(const uschar *, const uschar *);
200 extern void debug_logging_from_spool(const uschar *);
201 extern void debug_logging_stop(BOOL);
202 extern void debug_print_argv(const uschar **);
203 extern void debug_print_ids(uschar *);
204 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
205 extern void debug_print_string(uschar *);
206 extern void debug_print_tree(const char *, tree_node *);
207 extern void debug_vprintf(int, const char *, va_list);
208 extern void debug_pretrigger_setup(const uschar *);
209 extern void debug_pretrigger_discard(void);
210 extern void debug_print_socket(int);
211 extern void debug_trigger_fire(void);
213 extern void decode_bits(unsigned int *, size_t, int *,
214 const uschar *, bit_table *, int, uschar *, int);
215 extern void delete_pid_file(void);
216 extern void deliver_local(address_item *, BOOL);
217 extern address_item *deliver_make_addr(const uschar *, BOOL);
218 extern void delivery_log(int, address_item *, int, uschar *);
219 extern int deliver_message(const uschar *, BOOL, BOOL);
220 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
221 extern void deliver_set_expansions(address_item *);
222 extern int deliver_split_address(address_item *);
223 extern void deliver_succeeded(address_item *);
225 extern void delivery_re_exec(int);
227 extern void die_tainted(const uschar *, const uschar *, int);
228 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
230 extern uschar *dkim_exim_query_dns_txt(const uschar *);
231 extern void dkim_exim_sign_init(void);
233 extern BOOL dkim_transport_write_message(transport_ctx *,
234 struct ob_dkim *, const uschar ** errstr);
236 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
237 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
238 extern uschar *dns_build_reverse(const uschar *);
239 extern time_t dns_expire_from_soa(dns_answer *, int);
240 extern void dns_init(BOOL, BOOL, BOOL);
241 extern BOOL dns_is_aa(const dns_answer *);
242 extern BOOL dns_is_secure(const dns_answer *);
243 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
244 extern void dns_pattern_init(void);
245 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
246 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
247 extern uschar *dns_text_type(int);
248 extern void dscp_list_to_stream(FILE *);
249 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
251 extern void enq_end(uschar *);
252 extern BOOL enq_start(uschar *, unsigned);
253 #ifndef DISABLE_EVENT
254 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
255 extern void msg_event_raise(const uschar *, const address_item *);
258 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
259 extern const uschar * exim_errstr(int);
260 extern void exim_exit(int) NORETURN;
261 extern void exim_gettime(struct timeval *);
262 extern void exim_nullstd(void);
263 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
264 extern void exim_underbar_exit(int) NORETURN;
265 extern void exim_wait_tick(struct timeval *, int);
266 extern int exp_bool(address_item *addr,
267 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
268 uschar *svalue, BOOL *rvalue);
269 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
270 extern uschar *expand_file_big_buffer(const uschar *);
271 extern uschar *expand_string(uschar *); /* public, cannot make const */
272 extern const uschar *expand_string_2(const uschar *, BOOL *);
273 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
274 extern uschar *expand_getkeyed(const uschar *, const uschar *);
276 extern uschar *expand_hide_passwords(uschar * );
277 extern uschar *expand_string_copy(const uschar *);
278 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
279 extern void modify_variable(uschar *, void *);
281 extern BOOL fd_ready(int, time_t);
283 extern int filter_interpret(const uschar *, int, address_item **, uschar **);
284 extern BOOL filter_personal(string_item *, BOOL);
285 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
286 extern BOOL filter_system_interpret(address_item **, uschar **);
288 extern uschar * fn_hdrs_added(void);
289 extern void force_fd(int, int);
291 extern void header_add(int, const char *, ...);
292 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
293 extern int header_checkname(header_line *, BOOL);
294 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
295 extern int host_address_extract_port(uschar *);
296 extern uschar *host_and_ident(BOOL);
297 extern int host_aton(const uschar *, int *);
298 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
299 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
300 extern void host_build_log_info(void);
301 extern void host_build_sender_fullhost(void);
302 extern int host_find_byname(host_item *, const uschar *, int,
303 const uschar **, BOOL);
304 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
305 uschar *, const dnssec_domains *, const uschar **, BOOL *);
306 extern ip_address_item *host_find_interfaces(void);
307 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
308 extern BOOL host_is_tls_on_connect_port(int);
309 extern int host_item_get_port(host_item *);
310 extern void host_mask(int, int *, int);
311 extern int host_name_lookup(void);
312 extern int host_nmtoa(int, const int *, int, uschar *, int);
313 extern uschar *host_ntoa(int, const void *, uschar *, int *);
314 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
316 extern uschar *imap_utf7_encode(uschar *, const uschar *,
317 uschar, uschar *, uschar **);
319 extern void invert_address(uschar *, uschar *);
320 extern int ip_addr(void *, int, const uschar *, int);
321 extern int ip_bind(int, int, uschar *, int);
322 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
323 extern int ip_connectedsocket(int, const uschar *, int, int,
324 int, host_item *, uschar **, const blob *);
325 extern int ip_get_address_family(int);
326 extern void ip_keepalive(int, const uschar *, BOOL);
327 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
328 extern int ip_socket(int, int);
330 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
331 extern int ip_unixsocket(const uschar *, uschar **);
332 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
334 extern int ipv6_nmtoa(int *, uschar *);
336 extern const uschar *local_part_quote(const uschar *);
337 extern int log_open_as_exim(const uschar * const);
338 extern void log_close_all(void);
340 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
341 extern BOOL macro_read_assignment(uschar *);
342 extern uschar *macros_expand(int, int *, BOOL *);
343 extern void mainlog_close(void);
344 #ifdef WITH_CONTENT_SCAN
345 extern int malware(const uschar *, BOOL, int);
346 extern int malware_in_file(const uschar *);
347 extern void malware_init(void);
348 extern gstring * malware_show_supported(gstring *);
350 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
351 unsigned int *, int, int, const uschar **);
352 extern int match_address_list_basic(const uschar *, const uschar **, int);
353 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
354 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
355 const uschar *, const uschar **);
356 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
357 unsigned int *, int, BOOL, const uschar **);
358 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
361 extern void message_start(void);
362 extern void message_tidyup(void);
363 extern void md5_end(md5 *, const uschar *, int, uschar *);
364 extern void md5_mid(md5 *, const uschar *);
365 extern void md5_start(md5 *);
366 extern void millisleep(int);
367 #ifdef WITH_CONTENT_SCAN
368 struct mime_boundary_context;
369 extern int mime_acl_check(uschar *acl, FILE *f,
370 struct mime_boundary_context *, uschar **, uschar **);
371 extern int mime_decode(const uschar **);
372 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
373 extern int mime_regex(const uschar **, BOOL);
374 extern void mime_set_anomaly(int);
376 extern uschar *moan_check_errorcopy(const uschar *);
377 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
379 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
380 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
381 header_line *, FILE *, uschar *);
382 extern void moan_tell_someone(uschar *, address_item *,
383 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
384 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
385 extern void moan_write_from(FILE *);
386 extern void moan_write_references(FILE *, uschar *);
387 extern FILE *modefopen(const uschar *, const char *, mode_t);
389 extern int open_cutthrough_connection( address_item * addr );
391 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
393 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
394 const uschar *, const uschar *, error_block **);
395 extern uschar *parse_find_address_end(const uschar *, BOOL);
396 extern const uschar *parse_find_at(const uschar *);
397 extern const uschar *parse_fix_phrase(const uschar *, int);
398 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
399 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
401 extern const uschar *parse_date_time(const uschar *str, time_t *t);
402 extern void priv_drop_temp(const uid_t, const gid_t);
403 extern void priv_restore(void);
405 extern BOOL proxy_protocol_host(void);
406 extern void proxy_protocol_setup(void);
409 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
410 extern void queue_check_only(void);
411 extern unsigned queue_count(void);
412 extern unsigned queue_count_cached(void);
413 extern void queue_list(int, const uschar **, int);
414 #ifndef DISABLE_QUEUE_RAMP
415 extern void queue_notify_daemon(const uschar * hostname);
417 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
419 extern int random_number(int);
420 extern const uschar *rc_to_string(int);
421 extern int rda_interpret(redirect_block *, int, const uschar *,
422 const sieve_block *, const ugid_block *, address_item **,
423 uschar **, error_block **, int *, const uschar *);
424 extern int rda_is_filter(const uschar *);
425 extern BOOL readconf_depends(driver_instance *, uschar *);
426 extern void readconf_driver_init(uschar *, driver_instance **,
427 driver_info *, int, void *, int, optionlist *, int);
428 extern const uschar *readconf_find_option(void *);
429 extern void readconf_main(BOOL);
430 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
431 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
432 extern uschar *readconf_printtime(int);
433 extern const uschar *readconf_readname(uschar *, int, const uschar *);
434 extern int readconf_readtime(const uschar *, int, BOOL);
435 extern void readconf_rest(void);
436 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
437 extern void readconf_save_config(const uschar *);
438 extern void read_message_body(BOOL);
439 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
440 extern BOOL receive_check_fs(int);
441 extern BOOL receive_check_set_sender(const uschar *);
442 extern BOOL receive_msg(BOOL);
443 extern int_eximarith_t receive_statvfs(BOOL, int *);
444 extern void receive_swallow_smtp(void);
445 extern int recv_fd_from_sock(int);
446 #ifdef WITH_CONTENT_SCAN
447 extern int regex(const uschar **, BOOL);
448 extern void regex_vars_clear(void);
450 extern void regex_at_daemon(const uschar *);
451 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
452 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
453 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
454 pcre2_compile_context *);
455 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
457 extern void retry_add_item(address_item *, const uschar *, int);
458 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
459 const uschar **, const uschar **);
460 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
461 extern const uschar *retry_host_key_build(const host_item *, BOOL,
463 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
464 dbdata_retry *, time_t);
465 extern void retry_update(address_item **, address_item **, address_item **);
466 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
467 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
468 extern header_line *rewrite_header(header_line *,
469 const uschar *, const uschar *,
470 rewrite_rule *, int, BOOL);
471 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
473 extern void rewrite_test(const uschar *);
474 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
476 extern int route_address(address_item *, address_item **, address_item **,
477 address_item **, address_item **, int);
478 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
479 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
480 extern BOOL route_findgroup(uschar *, gid_t *);
481 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
482 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
484 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
485 struct passwd **, uid_t *, uschar **);
486 extern void route_init(void);
487 extern gstring * route_show_supported(gstring *);
488 extern void route_tidyup(void);
489 extern uschar *router_current_name(void);
491 extern uschar *search_args(int, uschar *, uschar *, uschar **, const uschar *);
492 extern uschar *search_find(void *, const uschar *, uschar *, int,
493 const uschar *, int, int, int *, const uschar *);
494 extern int search_findtype(const uschar *, int);
495 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
496 int *, const uschar **);
497 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
498 extern void search_tidyup(void);
499 extern BOOL send_fd_over_socket(int, int);
500 extern uschar *sender_helo_verified_boolstr(void);
501 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
502 extern void sha1_end(hctx *, const uschar *, int, uschar *);
503 extern void sha1_mid(hctx *, const uschar *);
504 extern void sha1_start(hctx *);
505 extern int sieve_interpret(const uschar *, int, const sieve_block *,
506 address_item **, uschar **);
507 extern void sigalrm_handler(int);
508 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
509 extern int smtp_boundsock(smtp_connect_args *);
510 extern void smtp_closedown(uschar *);
511 extern void smtp_command_timeout_exit(void) NORETURN;
512 extern void smtp_command_sigterm_exit(void) NORETURN;
513 extern void smtp_data_timeout_exit(void) NORETURN;
514 extern void smtp_data_sigint_exit(void) NORETURN;
515 extern void smtp_deliver_init(void);
516 extern uschar *smtp_cmd_hist(void);
517 extern int smtp_connect(smtp_connect_args *, const blob *);
518 extern int smtp_feof(void);
519 extern int smtp_ferror(void);
520 extern uschar *smtp_get_connection_info(void);
521 extern BOOL smtp_get_interface(uschar *, int, address_item *,
522 uschar **, uschar *);
523 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
524 extern int smtp_getc(unsigned);
525 extern uschar *smtp_getbuf(unsigned *);
526 extern void smtp_get_cache(unsigned);
527 extern BOOL smtp_hasc(void);
528 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
529 extern void smtp_log_no_mail(void);
530 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
531 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
532 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
533 extern void *smtp_reset(void *);
534 extern void smtp_respond(uschar *, int, BOOL, uschar *);
535 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
536 extern void smtp_port_for_connect(host_item *, int);
537 extern void smtp_send_prohibition_message(int, uschar *);
538 extern int smtp_setup_msg(void);
539 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
540 extern BOOL smtp_start_session(void);
541 extern int smtp_ungetc(int);
542 extern BOOL smtp_verify_helo(void);
543 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
544 #ifdef WITH_CONTENT_SCAN
545 extern int spam(const uschar **);
546 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
548 extern void spool_clear_header_globals(void);
549 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
550 extern int spool_open_datafile(const uschar *);
551 extern int spool_open_temp(uschar *);
552 extern int spool_read_header(uschar *, BOOL, BOOL);
553 extern uschar *spool_sender_from_msgid(const uschar *);
554 extern int spool_write_header(const uschar *, int, uschar **);
555 extern int stdin_getc(unsigned);
556 extern int stdin_feof(void);
557 extern int stdin_ferror(void);
558 extern BOOL stdin_hasc(void);
559 extern int stdin_ungetc(int);
561 extern void stackdump(void);
562 extern void store_exit(void);
563 extern void store_init(void);
564 extern void store_writeprotect(int);
566 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
567 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
568 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
569 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
570 extern uschar *string_base62_32(unsigned long int);
571 extern uschar *string_base62_64(unsigned long int);
572 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
573 extern int string_compare_by_pointer(const void *, const void *);
574 extern uschar *string_copy_dnsdomain(uschar *);
575 extern uschar *string_copy_malloc(const uschar *);
576 extern uschar *string_dequote(const uschar **);
577 extern uschar *string_format_size(int, uschar *);
578 extern int string_interpret_escape(const uschar **);
579 extern int string_is_ip_address(const uschar *, int *);
580 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
582 extern BOOL string_is_utf8(const uschar *);
584 extern const uschar *string_printing2(const uschar *, int);
585 extern uschar *string_split_message(uschar *);
586 extern uschar *string_unprinting(uschar *);
588 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
589 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
590 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
591 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
592 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
595 #define string_format(buf, siz, fmt, ...) \
596 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
597 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
598 const char *, ...) ALMOST_PRINTF(5,6);
600 #define string_vformat(g, flgs, fmt, ap) \
601 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
602 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
603 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
604 unsigned, unsigned, const char *, va_list);
606 #define string_open_failed(fmt, ...) \
607 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
608 extern uschar *string_open_failed_trc(const uschar *, unsigned,
609 const char *, ...) PRINTF_FUNCTION(3,4);
611 #define string_nextinlist(lp, sp, b, l) \
612 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
613 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
614 const uschar * func, int line);
616 extern int strcmpic(const uschar *, const uschar *);
617 extern int strncmpic(const uschar *, const uschar *, int);
618 extern uschar *strstric(uschar *, uschar *, BOOL);
619 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
621 extern int test_harness_fudged_queue_time(int);
622 extern void tcp_init(void);
623 #ifdef EXIM_TFO_PROBE
624 extern void tfo_probe(void);
626 extern void tls_modify_variables(tls_support *);
627 extern uschar *tod_stamp(int);
629 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
631 extern uschar *transport_current_name(void);
632 extern void transport_do_pass_socket(const uschar *, const uschar *,
633 const uschar *, uschar *, int);
634 extern void transport_init(void);
635 extern const uschar *transport_rcpt_address(address_item *, BOOL);
636 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
637 unsigned, int, address_item *, const uschar *, uschar **);
638 extern void transport_update_waiting(host_item *, uschar *);
639 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
640 extern void transport_write_reset(int);
641 extern BOOL transport_write_string(int, const char *, ...);
642 extern BOOL transport_headers_send(transport_ctx *,
643 BOOL (*)(transport_ctx *, const uschar *, int));
644 extern gstring * transport_show_supported(gstring *);
645 extern BOOL transport_write_message(transport_ctx *, int);
646 extern void tree_add_duplicate(const uschar *, address_item *);
647 extern void tree_add_nonrecipient(const uschar *);
648 extern void tree_add_unusable(const host_item *);
649 extern void tree_dup(tree_node **, tree_node *);
650 extern int tree_insertnode(tree_node **, tree_node *);
651 extern tree_node *tree_search(tree_node *, const uschar *);
652 extern void tree_write(tree_node *, FILE *);
653 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
655 #ifdef WITH_CONTENT_SCAN
656 extern void unspool_mbox(void);
659 extern gstring *utf8_version_report(gstring *);
662 extern int vaguely_random_number(int);
664 extern int vaguely_random_number_fallback(int);
666 extern int verify_address(address_item *, FILE *, int, int, int, int,
667 uschar *, uschar *, BOOL *);
668 extern int verify_check_dnsbl(int, const uschar **, uschar **);
669 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
670 uschar *, uschar *, int, int *);
671 extern int verify_check_headers(uschar **);
672 extern int verify_check_header_names_ascii(uschar **);
673 extern int verify_check_host(uschar **);
674 extern int verify_check_notblind(BOOL);
675 extern int verify_check_given_host(const uschar **, const host_item *);
676 extern int verify_check_this_host(const uschar **, unsigned int *,
677 const uschar*, const uschar *, const uschar **);
678 extern address_item *verify_checked_sender(const uschar *);
679 extern void verify_get_ident(int);
680 extern void verify_quota(uschar *);
681 extern int verify_quota_call(const uschar *, int, int, uschar **);
682 extern BOOL verify_sender(int *, uschar **);
683 extern BOOL verify_sender_preliminary(int *, uschar **);
684 extern void version_init(void);
686 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
687 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
688 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
690 #ifdef EXPERIMENTAL_XCLIENT
691 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
692 extern gstring * xclient_smtp_advertise_str(gstring *);
694 extern uschar *xtextencode(uschar *, int);
695 extern int xtextdecode(uschar *, uschar **);
698 /******************************************************************************/
699 /* Predicate: if an address is in a tainted pool.
700 By extension, a variable pointing to this address is tainted.
704 is_tainted(const void * p)
706 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
710 extern BOOL is_tainted_fn(const void *);
711 return is_tainted_fn(p);
716 is_incompatible(const void * old, const void * new)
718 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
722 extern BOOL is_incompatible_fn(const void *, const void *);
723 return is_incompatible_fn(old, new);
727 /******************************************************************************/
728 /* String functions */
729 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
731 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
732 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
734 return US strcat(CS dst, CCS src);
736 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
738 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
739 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
741 return US strcpy(CS dst, CCS src);
743 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
745 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
746 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
748 return US strncat(CS dst, CCS src, n);
750 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
752 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
753 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
755 return US strncpy(CS dst, CCS src, n);
757 /*XXX will likely need unchecked copy also */
760 /* Advance the string pointer given over any whitespace.
761 Return the next char as there's enough places using it to be useful. */
763 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
765 static inline uschar skip_whitespace(const uschar ** sp)
766 { while (isspace(**sp)) (*sp)++; return **sp; }
768 /* Ditto, non-whitespace */
770 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
771 static inline uschar skip_nonwhite(const uschar ** sp)
772 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
775 /******************************************************************************/
777 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
778 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
779 chown(<exim-uid>, <exim-gid>).
781 Probably because the idmapping is broken, misconfigured or set up in
782 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
783 case of misconfiguration, or if there are more such broken systems
784 out, I try to impose as least impact as possible and for now just write
785 a panic log entry pointing to the bug report. You're encouraged to
786 contact the developers, if you experience this issue.
788 fd the file descriptor (or -1 if not valid)
789 name the file name for error messages or for file operations,
794 returns 0 on success, -1 on failure */
797 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
799 return fchown(fd, owner, group)
800 ? exim_chown_failure(fd, name, owner, group) : 0;
804 exim_chown(const uschar *name, uid_t owner, gid_t group)
806 return chown(CCS name, owner, group)
807 ? exim_chown_failure(-1, name, owner, group) : 0;
809 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
811 /******************************************************************************/
812 /* String functions */
814 #if !defined(MACRO_PREDEF)
815 /*************************************************
816 * Copy and save string *
817 *************************************************/
819 /* This function assumes that memcpy() is faster than strcpy().
820 The result is explicitly nul-terminated.
823 static inline uschar *
824 string_copyn_taint_trc(const uschar * s, unsigned len,
825 const void * proto_mem, const char * func, int line)
828 unsigned slen = Ustrlen(s);
829 if (len > slen) len = slen;
830 ss = store_get_3(len + 1, proto_mem, func, line);
836 static inline uschar *
837 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
838 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
840 static inline uschar *
841 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
842 { return string_copyn_taint_trc(s, len, s, func, line); }
843 static inline uschar *
844 string_copy_trc(const uschar * s, const char * func, int line)
845 { return string_copy_taint_trc(s, s, func, line); }
848 /* String-copy functions explicitly setting the taint status */
850 #define string_copyn_taint(s, len, proto_mem) \
851 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
852 #define string_copy_taint(s, proto_mem) \
853 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
855 /* Simple string-copy functions maintaining the taint */
857 #define string_copyn(s, len) \
858 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
859 #define string_copy(s) \
860 string_copy_trc((s), __FUNCTION__, __LINE__)
863 /*************************************************
864 * Copy, lowercase and save string *
865 *************************************************/
868 Argument: string to copy
869 Returns: copy of string in new store, with letters lowercased
872 static inline uschar *
873 string_copylc(const uschar * s)
875 uschar * ss = store_get(Ustrlen(s) + 1, s);
877 while (*s) *p++ = tolower(*s++);
884 /*************************************************
885 * Copy, lowercase, and save string, given length *
886 *************************************************/
888 /* It is assumed the data contains no zeros. A zero is added
893 n number of characters
895 Returns: copy of string in new store, with letters lowercased
898 static inline uschar *
899 string_copynlc(uschar * s, int n)
901 uschar * ss = store_get(n + 1, s);
903 while (n-- > 0) *p++ = tolower(*s++);
909 # ifndef COMPILE_UTILITY
910 /*************************************************
911 * Copy and save string in longterm store *
912 *************************************************/
914 /* This function assumes that memcpy() is faster than strcpy().
916 Argument: string to copy
917 Returns: copy of string in new store
920 static inline uschar *
921 string_copy_perm(const uschar *s, BOOL force_taint)
923 int old_pool = store_pool;
924 int len = Ustrlen(s) + 1;
927 store_pool = POOL_PERM;
928 ss = store_get(len, force_taint ? GET_TAINTED : s);
930 store_pool = old_pool;
937 /* sprintf into a buffer, taint-unchecked */
940 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
942 gstring gs = { .size = siz, .ptr = 0, .s = buf };
945 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
951 /******************************************************************************/
952 /* Growable-string functions */
954 /* Create a growable-string with some preassigned space */
956 #define string_get_tainted(size, proto_mem) \
957 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
959 static inline gstring *
960 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
962 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
963 g->size = size; /*XXX would be good if we could see the actual alloc size */
969 #define string_get(size) \
970 string_get_trc((size), __FUNCTION__, __LINE__)
972 static inline gstring *
973 string_get_trc(unsigned size, const char * func, unsigned line)
975 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
978 /* NUL-terminate the C string in the growable-string, and return it. */
980 static inline uschar *
981 string_from_gstring(gstring * g)
989 len_string_from_gstring(gstring * g, uschar ** sp)
1004 static inline uschar *
1005 string_copy_from_gstring(gstring * g)
1007 return g ? string_copyn(g->s, g->ptr) : NULL;
1010 static inline unsigned
1011 gstring_length(const gstring * g)
1013 return g ? (unsigned)g->ptr : 0;
1016 static inline uschar
1017 gstring_last_char(gstring * g)
1019 return g->s[g->ptr-1];
1023 gstring_trim(gstring * g, unsigned amount)
1029 gstring_trim_trailing(gstring * g, uschar c)
1031 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1035 gstring_reset(gstring * g)
1041 #define gstring_release_unused(g) \
1042 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1045 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1047 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1051 /* plain string append to a growable-string */
1053 static inline gstring * string_cat(gstring * g, const uschar * s)
1056 static inline gstring *
1057 string_cat(gstring * g, const uschar * s)
1059 return string_catn(g, s, Ustrlen(s));
1063 /* sprintf-append to a growable-string */
1065 #define string_fmt_append(g, fmt, ...) \
1066 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1067 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1069 #define string_fmt_append_f(g, flgs, fmt, ...) \
1070 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1071 flgs, fmt, __VA_ARGS__)
1073 static inline gstring *
1074 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1075 unsigned flags, const char *format, ...)
1078 va_start(ap, format);
1079 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1086 /* Copy the content of a string to tainted memory. The proto_mem arg
1087 will always be tainted, and suitable as a prototype. */
1090 gstring_rebuffer(gstring * g, const void * proto_mem)
1092 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1093 memcpy(s, g->s, g->ptr);
1097 /* Append one gstring to another */
1099 static inline gstring *
1100 gstring_append(gstring * dest, gstring * item)
1102 return string_catn(dest, item->s, item->ptr);
1106 # ifndef COMPILE_UTILITY
1107 /******************************************************************************/
1108 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1109 for them as the strings we proceed to copy from them meant they could not be
1110 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1111 we do have to take care over marking tainted all copied strings. A separate pool
1112 could be used and would handle that implicitly. */
1114 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1116 static inline dns_answer *
1117 store_get_dns_answer_trc(const uschar * func, unsigned line)
1119 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1122 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1125 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1127 store_free_3(dnsa, CCS func, line);
1131 /* Check for an RR being large enough. Return TRUE iff bad. */
1133 rr_bad_size(const dns_record * rr, size_t minbytes)
1135 return rr->size < minbytes;
1138 /* Check for an RR having further data beyond a given pointer.
1139 Return TRUE iff bad. */
1141 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1143 return rr_bad_size(rr, ptr - rr->data + minbytes);
1146 /******************************************************************************/
1147 /* Routines with knowledge of spool layout */
1150 spool_pname_buf(uschar * buf, int len)
1152 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1155 static inline uschar *
1156 spool_dname(const uschar * purpose, uschar * subdir)
1158 return string_sprintf("%s/%s/%s/%s",
1159 spool_directory, queue_name, purpose, subdir);
1163 static inline uschar *
1164 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1166 return string_sprintf("%s%s%s%s%s",
1169 *subdir ? "/" : "", subdir);
1172 static inline uschar *
1173 spool_sname(const uschar * purpose, const uschar * subdir)
1175 return spool_q_sname(purpose, queue_name, subdir);
1178 static inline uschar *
1179 spool_q_fname(const uschar * purpose, const uschar * q,
1180 const uschar * subdir, const uschar * fname, const uschar * suffix)
1182 return string_sprintf("%s/%s/%s/%s/%s%s",
1183 spool_directory, q, purpose, subdir, fname, suffix);
1186 static inline uschar *
1187 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1188 const uschar * suffix)
1190 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1191 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1192 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1193 uschar * buf = store_get(len, GET_UNTAINTED);
1194 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1195 spool_directory, queue_name, purpose, subdir, fname, suffix);
1198 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1203 set_subdir_str(uschar * subdir_str, const uschar * name,
1204 int search_sequence)
1206 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1207 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1208 subdir_str[1] = '\0';
1211 /******************************************************************************/
1212 /* Message-ID format transition knowlege */
1215 is_new_message_id(const uschar * id)
1217 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1221 is_old_message_id(const uschar * id)
1223 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1226 static inline unsigned
1227 spool_data_start_offset(const uschar * id)
1229 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1230 return SPOOL_DATA_START_OFFSET;
1233 /******************************************************************************/
1234 /* Time calculations */
1236 /* Diff two times (later, earlier) returning diff in 1st arg */
1238 timediff(struct timeval * later, const struct timeval * earlier)
1240 later->tv_sec -= earlier->tv_sec;
1241 if ((later->tv_usec -= earlier->tv_usec) < 0)
1244 later->tv_usec += 1000*1000;
1249 timesince(struct timeval * diff, const struct timeval * then)
1251 gettimeofday(diff, NULL);
1252 timediff(diff, then);
1255 static inline uschar *
1256 string_timediff(const struct timeval * diff)
1258 static uschar buf[16];
1260 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1261 return readconf_printtime((int)diff->tv_sec);
1263 snprintf(CS buf, sizeof(buf), "%u.%03us",
1264 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1269 static inline uschar *
1270 string_timesince(const struct timeval * then)
1272 struct timeval diff;
1273 timesince(&diff, then);
1274 return string_timediff(&diff);
1278 report_time_since(const struct timeval * t0, const uschar * where)
1280 # ifdef MEASURE_TIMING
1281 struct timeval diff;
1282 timesince(&diff, t0);
1283 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1284 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1290 testharness_pause_ms(int millisec)
1292 #ifndef MEASURE_TIMING
1293 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1297 /******************************************************************************/
1298 /* Taint-checked file opens */
1301 exim_open2(const char *pathname, int flags)
1303 if (!is_tainted(pathname)) return open(pathname, flags);
1304 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1309 exim_open(const char *pathname, int flags, mode_t mode)
1311 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1312 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1316 #ifdef EXIM_HAVE_OPENAT
1318 exim_openat(int dirfd, const char *pathname, int flags)
1320 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1321 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1326 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1328 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1329 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1335 static inline FILE *
1336 exim_fopen(const char *pathname, const char *mode)
1338 if (!is_tainted(pathname)) return fopen(pathname, mode);
1339 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1345 exim_opendir(const uschar * name)
1347 if (!is_tainted(name)) return opendir(CCS name);
1348 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1353 /******************************************************************************/
1354 # if !defined(COMPILE_UTILITY)
1355 /* Process manipulation */
1358 exim_fork(const unsigned char * purpose)
1361 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1362 if ((pid = fork()) == 0)
1364 f.daemon_listen = FALSE;
1365 process_purpose = purpose;
1366 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1370 testharness_pause_ms(100); /* let child work */
1371 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1378 child_open_exim(int * fdptr, const uschar * purpose)
1379 { return child_open_exim_function(fdptr, purpose); }
1382 child_open_exim2(int * fdptr, uschar * sender,
1383 uschar * sender_auth, const uschar * purpose)
1384 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1387 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1388 int *outfdptr, BOOL make_leader, const uschar * purpose)
1389 { return child_open_function(argv, envp, newumask, infdptr,
1390 outfdptr, make_leader, purpose);
1393 /* Return 1 if fd is usable per pollbits, else 0 */
1395 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1397 struct pollfd p = {.fd = fd, .events = pollbits};
1398 return poll(&p, 1, tmo_millisec);
1401 /******************************************************************************/
1402 /* Client-side smtp log string, for debug */
1405 smtp_debug_cmd_log_init(void)
1407 # ifndef DISABLE_CLIENT_CMD_LOG
1408 int old_pool = store_pool;
1409 store_pool = POOL_PERM;
1410 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1411 *client_cmd_log->s = '\0';
1412 store_pool = old_pool;
1418 smtp_debug_cmd(const uschar * buf, int mode)
1420 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1421 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1423 # ifndef DISABLE_CLIENT_CMD_LOG
1425 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1426 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1427 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1428 if (mode == SCMD_BUFFER)
1429 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1430 else if (mode == SCMD_MORE)
1431 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1432 store_pool = old_pool;
1438 /* This might be called both due to callout and then from delivery.
1439 Use memory that will not be released between those phases.
1442 smtp_debug_resp(const uschar * buf)
1444 # ifndef DISABLE_CLIENT_CMD_LOG
1445 int old_pool = store_pool;
1446 store_pool = POOL_PERM;
1447 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1448 buf[3] == '-' ? 4 : 3);
1449 store_pool = old_pool;
1455 smtp_debug_cmd_report(void)
1457 # ifndef DISABLE_CLIENT_CMD_LOG
1458 if (client_cmd_log && *client_cmd_log->s)
1460 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1461 gstring_reset(client_cmd_log);
1464 debug_printf("cmdlog: (unset)\n");
1471 expand_max_rcpt(const uschar * str_max_rcpt)
1473 const uschar * s = expand_cstring(str_max_rcpt);
1475 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1478 /******************************************************************************/
1479 /* Queue-runner operations */
1482 is_onetime_qrun(void)
1484 return qrunners && !qrunners->next && qrunners->interval == 0;
1488 is_multiple_qrun(void)
1490 return qrunners && (qrunners->interval > 0 || qrunners->next);
1494 # endif /* !COMPILE_UTILITY */
1496 /******************************************************************************/
1497 #endif /* !MACRO_PREDEF */
1499 #endif /* _FUNCTIONS_H_ */
1503 /* End of functions.h */