1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 - 2021 */
7 /* See the file NOTICE for conditions of use and distribution. */
10 /* Prototypes for functions that appear in various modules. Gathered together
11 to avoid having a lot of tiddly little headers with only a couple of lines in
12 them. However, some functions that are used (or not used) by utility programs
13 are in in fact in separate headers. */
22 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
23 uschar **) WARN_UNUSED_RESULT;
24 extern void cleanup_perl(void);
25 extern uschar *init_perl(uschar *);
31 std_dh_prime_default(void);
33 std_dh_prime_named(const uschar *);
35 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
36 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
37 extern uschar * tls_cert_issuer(void *, uschar * mod);
38 extern uschar * tls_cert_not_before(void *, uschar * mod);
39 extern uschar * tls_cert_not_after(void *, uschar * mod);
40 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
41 extern uschar * tls_cert_serial_number(void *, uschar * mod);
42 extern uschar * tls_cert_signature(void *, uschar * mod);
43 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
44 extern uschar * tls_cert_subject(void *, uschar * mod);
45 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
46 extern uschar * tls_cert_version(void *, uschar * mod);
48 extern uschar * tls_cert_der_b64(void * cert);
49 extern uschar * tls_cert_fprt_md5(void *);
50 extern uschar * tls_cert_fprt_sha1(void *);
51 extern uschar * tls_cert_fprt_sha256(void *);
53 extern void tls_clean_env(void);
54 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
55 void *, tls_support *, uschar **);
56 extern void tls_client_creds_reload(BOOL);
58 extern void tls_close(void *, int);
59 extern BOOL tls_could_getc(void);
60 extern void tls_daemon_init(void);
61 extern int tls_daemon_tick(void);
62 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
63 extern BOOL tls_export_cert(uschar *, size_t, void *);
64 extern int tls_feof(void);
65 extern int tls_ferror(void);
66 extern uschar *tls_field_from_dn(uschar *, const uschar *);
67 extern void tls_free_cert(void **);
68 extern int tls_getc(unsigned);
69 extern uschar *tls_getbuf(unsigned *);
70 extern void tls_get_cache(unsigned);
71 extern BOOL tls_hasc(void);
72 extern BOOL tls_import_cert(const uschar *, void **);
73 extern BOOL tls_is_name_for_cert(const uschar *, void *);
75 extern BOOL tls_openssl_options_parse(uschar *, long *);
77 extern int tls_read(void *, uschar *, size_t);
78 extern int tls_server_start(uschar **);
79 extern void tls_shutdown_wr(void *);
80 extern BOOL tls_smtp_buffered(void);
81 extern int tls_ungetc(int);
82 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
83 extern void tls_watch_discard_event(int);
84 extern void tls_watch_invalidate(void);
86 extern int tls_write(void *, const uschar *, size_t, BOOL);
87 extern uschar *tls_validate_require_cipher(void);
88 extern gstring *tls_version_report(gstring *);
91 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
94 #endif /*DISABLE_TLS*/
97 /* Everything else... */
99 extern acl_block *acl_read(uschar *(*)(void), uschar **);
100 extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
101 extern int acl_eval(int, uschar *, uschar **, uschar **);
103 extern tree_node *acl_var_create(uschar *);
104 extern void acl_var_write(uschar *, uschar *, void *);
106 #ifdef EXPERIMENTAL_ARC
107 extern void *arc_ams_setup_sign_bodyhash(void);
108 extern const uschar *arc_header_feed(gstring *, BOOL);
109 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
110 extern void arc_sign_init(void);
111 extern const uschar *acl_verify_arc(void);
112 extern uschar * fn_arc_domains(void);
115 extern void assert_no_variables(void *, int, const char *, int);
116 extern int auth_call_pam(const uschar *, uschar **);
117 extern int auth_call_pwcheck(uschar *, uschar **);
118 extern int auth_call_radius(const uschar *, uschar **);
119 extern int auth_call_saslauthd(const uschar *, const uschar *,
120 const uschar *, const uschar *, uschar **);
121 extern int auth_check_serv_cond(auth_instance *);
122 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
123 extern int auth_client_item(void *, auth_instance *, const uschar **,
124 unsigned, int, uschar *, int);
127 extern int auth_get_data(uschar **, const uschar *, int);
128 extern int auth_get_no64_data(uschar **, uschar *);
129 extern int auth_prompt(const uschar *);
130 extern int auth_read_input(const uschar *);
131 extern gstring * auth_show_supported(gstring *);
132 extern uschar *auth_xtextencode(uschar *, int);
133 extern int auth_xtextdecode(uschar *, uschar **);
135 #ifdef EXPERIMENTAL_ARC
136 extern gstring *authres_arc(gstring *);
139 extern gstring *authres_dkim(gstring *);
142 extern gstring *authres_dmarc(gstring *);
144 extern gstring *authres_smtpauth(gstring *);
146 extern gstring *authres_spf(gstring *);
149 extern uschar *b64encode(const uschar *, int);
150 extern uschar *b64encode_taint(const uschar *, int, BOOL);
151 extern int b64decode(const uschar *, uschar **);
152 extern int bdat_getc(unsigned);
153 extern uschar *bdat_getbuf(unsigned *);
154 extern BOOL bdat_hasc(void);
155 extern int bdat_ungetc(int);
156 extern void bdat_flush_data(void);
158 extern void bits_clear(unsigned int *, size_t, int *);
159 extern void bits_set(unsigned int *, size_t, int *);
161 extern void cancel_cutthrough_connection(BOOL, const uschar *);
162 extern gstring *cat_file(FILE *, gstring *, uschar *);
163 extern gstring *cat_file_tls(void *, gstring *, uschar *);
164 extern int check_host(void *, const uschar *, const uschar **, uschar **);
165 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
166 extern pid_t child_open_exim_function(int *, const uschar *);
167 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
169 extern pid_t child_open_function(uschar **, uschar **, int,
170 int *, int *, BOOL, const uschar *);
171 extern pid_t child_open_uid(const uschar **, const uschar **, int,
172 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
173 extern BOOL cleanup_environment(void);
174 extern void cutthrough_data_puts(uschar *, int);
175 extern void cutthrough_data_put_nl(void);
176 extern uschar *cutthrough_finaldot(void);
177 extern BOOL cutthrough_flush_send(void);
178 extern BOOL cutthrough_headers_send(void);
179 extern BOOL cutthrough_predata(void);
180 extern void release_cutthrough_connection(const uschar *);
182 extern void daemon_go(void);
184 #ifdef EXPERIMENTAL_DCC
185 extern int dcc_process(uschar **);
188 extern void debug_logging_activate(uschar *, uschar *);
189 extern void debug_logging_stop(BOOL);
190 extern void debug_print_argv(const uschar **);
191 extern void debug_print_ids(uschar *);
192 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
193 extern void debug_print_string(uschar *);
194 extern void debug_print_tree(const char *, tree_node *);
195 extern void debug_vprintf(int, const char *, va_list);
196 extern void debug_pretrigger_setup(const uschar *);
197 extern void debug_pretrigger_discard(void);
198 extern void debug_print_socket(int);
199 extern void debug_trigger_fire(void);
201 extern void decode_bits(unsigned int *, size_t, int *,
202 uschar *, bit_table *, int, uschar *, int);
203 extern void delete_pid_file(void);
204 extern void deliver_local(address_item *, BOOL);
205 extern address_item *deliver_make_addr(uschar *, BOOL);
206 extern void delivery_log(int, address_item *, int, uschar *);
207 extern int deliver_message(uschar *, BOOL, BOOL);
208 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
209 extern void deliver_set_expansions(address_item *);
210 extern int deliver_split_address(address_item *);
211 extern void deliver_succeeded(address_item *);
213 extern void delivery_re_exec(int);
215 extern void die_tainted(const uschar *, const uschar *, int);
216 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
218 extern uschar *dkim_exim_query_dns_txt(const uschar *);
219 extern void dkim_exim_sign_init(void);
221 extern BOOL dkim_transport_write_message(transport_ctx *,
222 struct ob_dkim *, const uschar ** errstr);
224 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
225 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
226 extern uschar *dns_build_reverse(const uschar *);
227 extern time_t dns_expire_from_soa(dns_answer *, int);
228 extern void dns_init(BOOL, BOOL, BOOL);
229 extern BOOL dns_is_aa(const dns_answer *);
230 extern BOOL dns_is_secure(const dns_answer *);
231 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
232 extern void dns_pattern_init(void);
233 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
234 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
235 extern uschar *dns_text_type(int);
236 extern void dscp_list_to_stream(FILE *);
237 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
239 extern void enq_end(uschar *);
240 extern BOOL enq_start(uschar *, unsigned);
241 #ifndef DISABLE_EVENT
242 extern uschar *event_raise(uschar *, const uschar *, uschar *, int *);
243 extern void msg_event_raise(const uschar *, const address_item *);
246 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
247 extern const uschar * exim_errstr(int);
248 extern void exim_exit(int) NORETURN;
249 extern void exim_gettime(struct timeval *);
250 extern void exim_nullstd(void);
251 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
252 extern void exim_underbar_exit(int) NORETURN;
253 extern void exim_wait_tick(struct timeval *, int);
254 extern int exp_bool(address_item *addr,
255 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
256 uschar *svalue, BOOL *rvalue);
257 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
258 extern uschar *expand_file_big_buffer(const uschar *);
259 extern uschar *expand_string(uschar *); /* public, cannot make const */
260 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
261 extern uschar *expand_getkeyed(const uschar *, const uschar *);
263 extern uschar *expand_hide_passwords(uschar * );
264 extern uschar *expand_string_copy(const uschar *);
265 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
266 extern void modify_variable(uschar *, void *);
268 extern BOOL fd_ready(int, time_t);
270 extern int filter_interpret(uschar *, int, address_item **, uschar **);
271 extern BOOL filter_personal(string_item *, BOOL);
272 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
273 extern BOOL filter_system_interpret(address_item **, uschar **);
275 extern uschar * fn_hdrs_added(void);
276 extern void force_fd(int, int);
278 extern void header_add(int, const char *, ...);
279 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
280 extern int header_checkname(header_line *, BOOL);
281 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
282 extern int host_address_extract_port(uschar *);
283 extern uschar *host_and_ident(BOOL);
284 extern int host_aton(const uschar *, int *);
285 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
286 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
287 extern void host_build_log_info(void);
288 extern void host_build_sender_fullhost(void);
289 extern int host_find_byname(host_item *, const uschar *, int,
290 const uschar **, BOOL);
291 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
292 uschar *, const dnssec_domains *, const uschar **, BOOL *);
293 extern ip_address_item *host_find_interfaces(void);
294 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
295 extern BOOL host_is_tls_on_connect_port(int);
296 extern int host_item_get_port(host_item *);
297 extern void host_mask(int, int *, int);
298 extern int host_name_lookup(void);
299 extern int host_nmtoa(int, int *, int, uschar *, int);
300 extern uschar *host_ntoa(int, const void *, uschar *, int *);
301 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
303 extern uschar *imap_utf7_encode(uschar *, const uschar *,
304 uschar, uschar *, uschar **);
306 extern void invert_address(uschar *, uschar *);
307 extern int ip_addr(void *, int, const uschar *, int);
308 extern int ip_bind(int, int, uschar *, int);
309 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
310 extern int ip_connectedsocket(int, const uschar *, int, int,
311 int, host_item *, uschar **, const blob *);
312 extern int ip_get_address_family(int);
313 extern void ip_keepalive(int, const uschar *, BOOL);
314 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
315 extern int ip_socket(int, int);
317 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
318 extern int ip_unixsocket(const uschar *, uschar **);
319 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
321 extern int ipv6_nmtoa(int *, uschar *);
323 extern uschar *local_part_quote(uschar *);
324 extern int log_open_as_exim(uschar * const);
325 extern void log_close_all(void);
327 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
328 extern BOOL macro_read_assignment(uschar *);
329 extern uschar *macros_expand(int, int *, BOOL *);
330 extern void mainlog_close(void);
331 #ifdef WITH_CONTENT_SCAN
332 extern int malware(const uschar *, int);
333 extern int malware_in_file(uschar *);
334 extern void malware_init(void);
335 extern gstring * malware_show_supported(gstring *);
337 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
338 unsigned int *, int, int, const uschar **);
339 extern int match_address_list_basic(const uschar *, const uschar **, int);
340 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
341 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
342 const uschar *, const uschar **);
343 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
344 unsigned int *, int, BOOL, const uschar **);
345 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
348 extern void message_start(void);
349 extern void message_tidyup(void);
350 extern void md5_end(md5 *, const uschar *, int, uschar *);
351 extern void md5_mid(md5 *, const uschar *);
352 extern void md5_start(md5 *);
353 extern void millisleep(int);
354 #ifdef WITH_CONTENT_SCAN
355 struct mime_boundary_context;
356 extern int mime_acl_check(uschar *acl, FILE *f,
357 struct mime_boundary_context *, uschar **, uschar **);
358 extern int mime_decode(const uschar **);
359 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
360 extern int mime_regex(const uschar **);
361 extern void mime_set_anomaly(int);
363 extern uschar *moan_check_errorcopy(uschar *);
364 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
366 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
367 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
368 header_line *, FILE *, uschar *);
369 extern void moan_tell_someone(uschar *, address_item *,
370 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
371 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
372 extern void moan_write_from(FILE *);
373 extern void moan_write_references(FILE *, uschar *);
374 extern FILE *modefopen(const uschar *, const char *, mode_t);
376 extern int open_cutthrough_connection( address_item * addr );
378 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
380 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
381 const uschar *, uschar *, error_block **);
382 extern uschar *parse_find_address_end(const uschar *, BOOL);
383 extern const uschar *parse_find_at(const uschar *);
384 extern const uschar *parse_fix_phrase(const uschar *, int);
385 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
386 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
388 extern const uschar *parse_date_time(const uschar *str, time_t *t);
389 extern void priv_drop_temp(const uid_t, const gid_t);
390 extern void priv_restore(void);
391 extern int vaguely_random_number(int);
393 extern int vaguely_random_number_fallback(int);
396 extern BOOL queue_action(uschar *, int, uschar **, int, int);
397 extern void queue_check_only(void);
398 extern unsigned queue_count(void);
399 extern unsigned queue_count_cached(void);
400 extern void queue_list(int, uschar **, int);
401 #ifndef DISABLE_QUEUE_RAMP
402 extern void queue_notify_daemon(const uschar * hostname);
404 extern void queue_run(uschar *, uschar *, BOOL);
406 extern int random_number(int);
407 extern const uschar *rc_to_string(int);
408 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
409 uschar *, uschar *, uschar *, ugid_block *, address_item **,
410 uschar **, error_block **, int *, uschar *);
411 extern int rda_is_filter(const uschar *);
412 extern BOOL readconf_depends(driver_instance *, uschar *);
413 extern void readconf_driver_init(uschar *, driver_instance **,
414 driver_info *, int, void *, int, optionlist *, int);
415 extern uschar *readconf_find_option(void *);
416 extern void readconf_main(BOOL);
417 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
418 extern BOOL readconf_print(const uschar *, uschar *, BOOL);
419 extern uschar *readconf_printtime(int);
420 extern uschar *readconf_readname(uschar *, int, uschar *);
421 extern int readconf_readtime(const uschar *, int, BOOL);
422 extern void readconf_rest(void);
423 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
424 extern void readconf_save_config(const uschar *);
425 extern void read_message_body(BOOL);
426 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
427 extern BOOL receive_check_fs(int);
428 extern BOOL receive_check_set_sender(uschar *);
429 extern BOOL receive_msg(BOOL);
430 extern int_eximarith_t receive_statvfs(BOOL, int *);
431 extern void receive_swallow_smtp(void);
432 #ifdef WITH_CONTENT_SCAN
433 extern int regex(const uschar **);
435 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
436 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
437 extern const pcre2_code *regex_must_compile(const uschar *, BOOL, BOOL);
438 extern void retry_add_item(address_item *, uschar *, int);
439 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
440 uschar **, uschar **);
441 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
442 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
443 dbdata_retry *, time_t);
444 extern void retry_update(address_item **, address_item **, address_item **);
445 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
446 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
447 extern header_line *rewrite_header(header_line *,
448 const uschar *, const uschar *,
449 rewrite_rule *, int, BOOL);
450 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
452 extern void rewrite_test(const uschar *);
453 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
455 extern int route_address(address_item *, address_item **, address_item **,
456 address_item **, address_item **, int);
457 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
458 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
459 extern BOOL route_findgroup(uschar *, gid_t *);
460 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
461 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
463 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
464 struct passwd **, uid_t *, uschar **);
465 extern void route_init(void);
466 extern gstring * route_show_supported(gstring *);
467 extern void route_tidyup(void);
469 extern uschar *search_args(int, uschar *, uschar *, uschar **, const uschar *);
470 extern uschar *search_find(void *, const uschar *, uschar *, int,
471 const uschar *, int, int, int *, const uschar *);
472 extern int search_findtype(const uschar *, int);
473 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
474 int *, const uschar **);
475 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
476 extern void search_tidyup(void);
477 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
478 extern void sha1_end(hctx *, const uschar *, int, uschar *);
479 extern void sha1_mid(hctx *, const uschar *);
480 extern void sha1_start(hctx *);
481 extern void show_string(BOOL, gstring *);
482 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
483 uschar *, address_item **, uschar **);
484 extern void sigalrm_handler(int);
485 extern void smtp_closedown(uschar *);
486 extern void smtp_command_timeout_exit(void) NORETURN;
487 extern void smtp_command_sigterm_exit(void) NORETURN;
488 extern void smtp_data_timeout_exit(void) NORETURN;
489 extern void smtp_data_sigint_exit(void) NORETURN;
490 extern void smtp_deliver_init(void);
491 extern uschar *smtp_cmd_hist(void);
492 extern int smtp_connect(smtp_connect_args *, const blob *);
493 extern int smtp_sock_connect(host_item *, int, int, uschar *,
494 transport_instance * tb, int, const blob *);
495 extern int smtp_feof(void);
496 extern int smtp_ferror(void);
497 extern uschar *smtp_get_connection_info(void);
498 extern BOOL smtp_get_interface(uschar *, int, address_item *,
499 uschar **, uschar *);
500 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
501 extern int smtp_getc(unsigned);
502 extern uschar *smtp_getbuf(unsigned *);
503 extern void smtp_get_cache(unsigned);
504 extern BOOL smtp_hasc(void);
505 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
506 extern void smtp_log_no_mail(void);
507 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
508 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
509 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
510 extern void *smtp_reset(void *);
511 extern void smtp_respond(uschar *, int, BOOL, uschar *);
512 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
513 extern void smtp_port_for_connect(host_item *, int);
514 extern void smtp_send_prohibition_message(int, uschar *);
515 extern int smtp_setup_msg(void);
516 extern BOOL smtp_start_session(void);
517 extern int smtp_ungetc(int);
518 extern BOOL smtp_verify_helo(void);
519 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
520 #ifdef WITH_CONTENT_SCAN
521 extern int spam(const uschar **);
522 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
524 extern void spool_clear_header_globals(void);
525 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
526 extern int spool_open_datafile(uschar *);
527 extern int spool_open_temp(uschar *);
528 extern int spool_read_header(uschar *, BOOL, BOOL);
529 extern uschar *spool_sender_from_msgid(const uschar *);
530 extern int spool_write_header(uschar *, int, uschar **);
531 extern int stdin_getc(unsigned);
532 extern int stdin_feof(void);
533 extern int stdin_ferror(void);
534 extern BOOL stdin_hasc(void);
535 extern int stdin_ungetc(int);
537 extern void store_exit(void);
538 extern void store_init(void);
539 extern void store_writeprotect(int);
541 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
542 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
543 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
544 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
545 extern uschar *string_base62(unsigned long int);
546 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
547 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
548 extern int string_compare_by_pointer(const void *, const void *);
549 extern uschar *string_copy_dnsdomain(uschar *);
550 extern uschar *string_copy_malloc(const uschar *);
551 extern uschar *string_dequote(const uschar **);
552 extern uschar *string_format_size(int, uschar *);
553 extern int string_interpret_escape(const uschar **);
554 extern int string_is_ip_address(const uschar *, int *);
556 extern BOOL string_is_utf8(const uschar *);
558 extern const uschar *string_printing2(const uschar *, int);
559 extern uschar *string_split_message(uschar *);
560 extern uschar *string_unprinting(uschar *);
562 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
563 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
564 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
565 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
566 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
569 #define string_format(buf, siz, fmt, ...) \
570 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
571 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
572 const char *, ...) ALMOST_PRINTF(5,6);
574 #define string_vformat(g, flgs, fmt, ap) \
575 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
576 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
577 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
578 unsigned, unsigned, const char *, va_list);
580 #define string_open_failed(fmt, ...) \
581 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
582 extern uschar *string_open_failed_trc(const uschar *, unsigned,
583 const char *, ...) PRINTF_FUNCTION(3,4);
585 #define string_nextinlist(lp, sp, b, l) \
586 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
587 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
588 const uschar * func, int line);
590 extern int strcmpic(const uschar *, const uschar *);
591 extern int strncmpic(const uschar *, const uschar *, int);
592 extern uschar *strstric(uschar *, uschar *, BOOL);
594 extern int test_harness_fudged_queue_time(int);
595 extern void tcp_init(void);
596 #ifdef EXIM_TFO_PROBE
597 extern void tfo_probe(void);
599 extern void tls_modify_variables(tls_support *);
600 extern uschar *tod_stamp(int);
602 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
604 extern void transport_init(void);
605 extern void transport_do_pass_socket(const uschar *, const uschar *,
606 const uschar *, uschar *, int);
607 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *, int
608 #ifdef EXPERIMENTAL_ESMTP_LIMITS
609 , unsigned, unsigned, unsigned
612 extern uschar *transport_rcpt_address(address_item *, BOOL);
613 extern BOOL transport_set_up_command(const uschar ***, uschar *,
614 BOOL, int, address_item *, uschar *, uschar **);
615 extern void transport_update_waiting(host_item *, uschar *);
616 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
617 extern void transport_write_reset(int);
618 extern BOOL transport_write_string(int, const char *, ...);
619 extern BOOL transport_headers_send(transport_ctx *,
620 BOOL (*)(transport_ctx *, uschar *, int));
621 extern gstring * transport_show_supported(gstring *);
622 extern BOOL transport_write_message(transport_ctx *, int);
623 extern void tree_add_duplicate(const uschar *, address_item *);
624 extern void tree_add_nonrecipient(const uschar *);
625 extern void tree_add_unusable(const host_item *);
626 extern void tree_dup(tree_node **, tree_node *);
627 extern int tree_insertnode(tree_node **, tree_node *);
628 extern tree_node *tree_search(tree_node *, const uschar *);
629 extern void tree_write(tree_node *, FILE *);
630 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
632 #ifdef WITH_CONTENT_SCAN
633 extern void unspool_mbox(void);
636 extern gstring *utf8_version_report(gstring *);
639 extern int verify_address(address_item *, FILE *, int, int, int, int,
640 uschar *, uschar *, BOOL *);
641 extern int verify_check_dnsbl(int, const uschar **, uschar **);
642 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
643 uschar *, uschar *, int, int *);
644 extern int verify_check_headers(uschar **);
645 extern int verify_check_header_names_ascii(uschar **);
646 extern int verify_check_host(uschar **);
647 extern int verify_check_notblind(BOOL);
648 extern int verify_check_given_host(const uschar **, const host_item *);
649 extern int verify_check_this_host(const uschar **, unsigned int *,
650 const uschar*, const uschar *, const uschar **);
651 extern address_item *verify_checked_sender(uschar *);
652 extern void verify_get_ident(int);
653 extern void verify_quota(uschar *);
654 extern int verify_quota_call(const uschar *, int, int, uschar **);
655 extern BOOL verify_sender(int *, uschar **);
656 extern BOOL verify_sender_preliminary(int *, uschar **);
657 extern void version_init(void);
659 extern BOOL write_chunk(transport_ctx *, uschar *, int);
660 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
663 /******************************************************************************/
664 /* Predicate: if an address is in a tainted pool.
665 By extension, a variable pointing to this address is tainted.
669 is_tainted(const void * p)
671 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
675 extern BOOL is_tainted_fn(const void *);
676 return is_tainted_fn(p);
680 /******************************************************************************/
681 /* String functions */
682 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
684 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
685 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
687 return US strcat(CS dst, CCS src);
689 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
691 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
692 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
694 return US strcpy(CS dst, CCS src);
696 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
698 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
699 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
701 return US strncat(CS dst, CCS src, n);
703 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
705 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
706 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
708 return US strncpy(CS dst, CCS src, n);
710 /*XXX will likely need unchecked copy also */
713 /* Advance the string pointer given over any whitespace.
714 Return the next char as there's enought places using it to be useful. */
716 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
718 static inline uschar skip_whitespace(const uschar ** sp)
719 { while (isspace(**sp)) (*sp)++; return **sp; }
722 /******************************************************************************/
724 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
725 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
726 chown(<exim-uid>, <exim-gid>).
728 Probably because the idmapping is broken, misconfigured or set up in
729 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
730 case of misconfiguration, or if there are more such broken systems
731 out, I try to impose as least impact as possible and for now just write
732 a panic log entry pointing to the bug report. You're encouraged to
733 contact the developers, if you experience this issue.
735 fd the file descriptor (or -1 if not valid)
736 name the file name for error messages or for file operations,
741 returns 0 on success, -1 on failure */
744 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
746 return fchown(fd, owner, group)
747 ? exim_chown_failure(fd, name, owner, group) : 0;
751 exim_chown(const uschar *name, uid_t owner, gid_t group)
753 return chown(CCS name, owner, group)
754 ? exim_chown_failure(-1, name, owner, group) : 0;
756 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
758 /******************************************************************************/
759 /* String functions */
761 #if !defined(MACRO_PREDEF)
762 /*************************************************
763 * Copy and save string *
764 *************************************************/
766 /* This function assumes that memcpy() is faster than strcpy().
767 The result is explicitly nul-terminated.
770 static inline uschar *
771 string_copyn_taint_trc(const uschar * s, unsigned len,
772 BOOL tainted, const char * func, int line)
774 uschar * ss = store_get_3(len + 1, tainted, func, line);
780 static inline uschar *
781 string_copy_taint_trc(const uschar * s, BOOL tainted, const char * func, int line)
782 { return string_copyn_taint_trc(s, Ustrlen(s), tainted, func, line); }
784 static inline uschar *
785 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
786 { return string_copyn_taint_trc(s, len, is_tainted(s), func, line); }
787 static inline uschar *
788 string_copy_trc(const uschar * s, const char * func, int line)
789 { return string_copy_taint_trc(s, is_tainted(s), func, line); }
792 /* String-copy functions explicitly setting the taint status */
794 #define string_copyn_taint(s, len, tainted) \
795 string_copyn_taint_trc((s), (len), (tainted), __FUNCTION__, __LINE__)
796 #define string_copy_taint(s, tainted) \
797 string_copy_taint_trc((s), (tainted), __FUNCTION__, __LINE__)
799 /* Simple string-copy functions maintaining the taint */
801 #define string_copyn(s, len) \
802 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
803 #define string_copy(s) \
804 string_copy_trc((s), __FUNCTION__, __LINE__)
807 /*************************************************
808 * Copy, lowercase and save string *
809 *************************************************/
812 Argument: string to copy
813 Returns: copy of string in new store, with letters lowercased
816 static inline uschar *
817 string_copylc(const uschar * s)
819 uschar * ss = store_get(Ustrlen(s) + 1, is_tainted(s));
821 while (*s) *p++ = tolower(*s++);
828 /*************************************************
829 * Copy, lowercase, and save string, given length *
830 *************************************************/
832 /* It is assumed the data contains no zeros. A zero is added
837 n number of characters
839 Returns: copy of string in new store, with letters lowercased
842 static inline uschar *
843 string_copynlc(uschar * s, int n)
845 uschar *ss = store_get(n + 1, is_tainted(s));
847 while (n-- > 0) *p++ = tolower(*s++);
853 # ifndef COMPILE_UTILITY
854 /*************************************************
855 * Copy and save string in longterm store *
856 *************************************************/
858 /* This function assumes that memcpy() is faster than strcpy().
860 Argument: string to copy
861 Returns: copy of string in new store
864 static inline uschar *
865 string_copy_perm(const uschar *s, BOOL force_taint)
867 int old_pool = store_pool;
868 int len = Ustrlen(s) + 1;
871 store_pool = POOL_PERM;
872 ss = store_get(len, force_taint || is_tainted(s));
874 store_pool = old_pool;
881 /* sprintf into a buffer, taint-unchecked */
884 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
886 gstring gs = { .size = siz, .ptr = 0, .s = buf };
889 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
895 /******************************************************************************/
896 /* Growable-string functions */
898 /* Create a growable-string with some preassigned space */
900 #define string_get_tainted(size, tainted) \
901 string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
903 static inline gstring *
904 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
906 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
907 g->size = size; /*XXX would be good if we could see the actual alloc size */
913 #define string_get(size) \
914 string_get_trc((size), __FUNCTION__, __LINE__)
916 static inline gstring *
917 string_get_trc(unsigned size, const char * func, unsigned line)
919 return string_get_tainted_trc(size, FALSE, func, line);
922 /* NUL-terminate the C string in the growable-string, and return it. */
924 static inline uschar *
925 string_from_gstring(gstring * g)
932 static inline unsigned
933 gstring_length(const gstring * g)
935 return g ? (unsigned)g->ptr : 0;
939 #define gstring_release_unused(g) \
940 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
943 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
945 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
949 /* sprintf-append to a growable-string */
951 #define string_fmt_append(g, fmt, ...) \
952 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
953 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
955 #define string_fmt_append_f(g, flgs, fmt, ...) \
956 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
957 flgs, fmt, __VA_ARGS__)
959 static inline gstring *
960 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
961 unsigned flags, const char *format, ...)
964 va_start(ap, format);
965 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
972 /* Copy the content of a string to tainted memory */
975 gstring_rebuffer(gstring * g)
977 uschar * s = store_get(g->size, TRUE);
978 memcpy(s, g->s, g->ptr);
983 # ifndef COMPILE_UTILITY
984 /******************************************************************************/
985 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
986 for them as the strings we proceed to copy from them meant they could not be
987 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
988 we do have to take care over marking tainted all copied strings. A separate pool
989 could be used and would handle that implicitly. */
991 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
993 static inline dns_answer *
994 store_get_dns_answer_trc(const uschar * func, unsigned line)
996 return store_malloc_3(sizeof(dns_answer), CCS func, line);
999 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1002 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1004 store_free_3(dnsa, CCS func, line);
1007 /******************************************************************************/
1008 /* Routines with knowledge of spool layout */
1011 spool_pname_buf(uschar * buf, int len)
1013 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1016 static inline uschar *
1017 spool_dname(const uschar * purpose, uschar * subdir)
1019 return string_sprintf("%s/%s/%s/%s",
1020 spool_directory, queue_name, purpose, subdir);
1024 static inline uschar *
1025 spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
1027 return string_sprintf("%s%s%s%s%s",
1030 *subdir ? "/" : "", subdir);
1033 static inline uschar *
1034 spool_sname(const uschar * purpose, uschar * subdir)
1036 return spool_q_sname(purpose, queue_name, subdir);
1039 static inline uschar *
1040 spool_q_fname(const uschar * purpose, const uschar * q,
1041 const uschar * subdir, const uschar * fname, const uschar * suffix)
1043 return string_sprintf("%s/%s/%s/%s/%s%s",
1044 spool_directory, q, purpose, subdir, fname, suffix);
1047 static inline uschar *
1048 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1049 const uschar * suffix)
1051 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1052 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1053 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1054 uschar * buf = store_get(len, FALSE);
1055 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1056 spool_directory, queue_name, purpose, subdir, fname, suffix);
1059 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1064 set_subdir_str(uschar * subdir_str, const uschar * name,
1065 int search_sequence)
1067 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1069 subdir_str[1] = '\0';
1072 /******************************************************************************/
1073 /* Time calculations */
1075 /* Diff two times (later, earlier) returning diff in 1st arg */
1077 timediff(struct timeval * later, const struct timeval * earlier)
1079 later->tv_sec -= earlier->tv_sec;
1080 if ((later->tv_usec -= earlier->tv_usec) < 0)
1083 later->tv_usec += 1000*1000;
1088 timesince(struct timeval * diff, const struct timeval * then)
1090 gettimeofday(diff, NULL);
1091 timediff(diff, then);
1094 static inline uschar *
1095 string_timediff(const struct timeval * diff)
1097 static uschar buf[sizeof("0.000s")];
1099 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1100 return readconf_printtime((int)diff->tv_sec);
1102 snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1107 static inline uschar *
1108 string_timesince(const struct timeval * then)
1110 struct timeval diff;
1111 timesince(&diff, then);
1112 return string_timediff(&diff);
1116 report_time_since(const struct timeval * t0, const uschar * where)
1118 # ifdef MEASURE_TIMING
1119 struct timeval diff;
1120 timesince(&diff, t0);
1121 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1122 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1128 testharness_pause_ms(int millisec)
1130 #ifndef MEASURE_TIMING
1131 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1135 /******************************************************************************/
1136 /* Taint-checked file opens */
1137 static inline uschar *
1138 is_tainted2(const void *p, int lflags, const char* fmt, ...)
1147 mark = store_mark();
1149 msg = string_from_gstring(string_vformat(NULL, SVFMT_TAINT_NOCHK|SVFMT_EXTEND, fmt, ap));
1152 #ifdef ALLOW_INSECURE_TAINTED_DATA
1153 if (allow_insecure_tainted_data)
1155 if LOGGING(tainted) log_write(0, LOG_MAIN, "Warning: %s", msg);
1161 if (lflags) log_write(0, lflags, "%s", msg);
1162 return msg; /* no store_reset(), as the message might be used afterwards and Exim
1163 is expected to exit anyway, so we do not care about the leaked
1168 exim_open2(const char *pathname, int flags)
1170 if (!is_tainted2(pathname, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname))
1171 return open(pathname, flags);
1177 exim_open(const char *pathname, int flags, mode_t mode)
1179 if (!is_tainted2(pathname, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname))
1180 return open(pathname, flags, mode);
1184 #ifdef EXIM_HAVE_OPENAT
1186 exim_openat(int dirfd, const char *pathname, int flags)
1188 if (!is_tainted2(pathname, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname))
1189 return openat(dirfd, pathname, flags);
1194 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1196 if (!is_tainted2(pathname, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname))
1197 return openat(dirfd, pathname, flags, mode);
1203 static inline FILE *
1204 exim_fopen(const char *pathname, const char *mode)
1206 if (!is_tainted2(pathname, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname))
1207 return fopen(pathname, mode);
1213 exim_opendir(const uschar * name)
1215 if (!is_tainted2(name, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name))
1216 return opendir(CCS name);
1221 /******************************************************************************/
1222 # if !defined(COMPILE_UTILITY)
1223 /* Process manipulation */
1226 exim_fork(const unsigned char * purpose)
1229 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1230 if ((pid = fork()) == 0)
1232 process_purpose = purpose;
1233 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1237 testharness_pause_ms(100); /* let child work */
1238 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1245 child_open_exim(int * fdptr, const uschar * purpose)
1246 { return child_open_exim_function(fdptr, purpose); }
1249 child_open_exim2(int * fdptr, uschar * sender,
1250 uschar * sender_auth, const uschar * purpose)
1251 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1254 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1255 int *outfdptr, BOOL make_leader, const uschar * purpose)
1256 { return child_open_function(argv, envp, newumask, infdptr,
1257 outfdptr, make_leader, purpose);
1260 /* Return 1 if fd is usable per pollbits, else 0 */
1262 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1264 struct pollfd p = {.fd = fd, .events = pollbits};
1265 return poll(&p, 1, tmo_millisec);
1268 # endif /* !COMPILE_UTILITY */
1270 /******************************************************************************/
1271 #endif /* !MACRO_PREDEF */
1273 #endif /* _FUNCTIONS_H_ */
1277 /* End of functions.h */