1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
7 /* See the file NOTICE for conditions of use and distribution. */
8 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 /* Prototypes for functions that appear in various modules. Gathered together
12 to avoid having a lot of tiddly little headers with only a couple of lines in
13 them. However, some functions that are used (or not used) by utility programs
14 are in in fact in separate headers. */
24 std_dh_prime_default(void);
26 std_dh_prime_named(const uschar *);
28 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
29 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
30 extern uschar * tls_cert_issuer(void *, uschar * mod);
31 extern uschar * tls_cert_not_before(void *, uschar * mod);
32 extern uschar * tls_cert_not_after(void *, uschar * mod);
33 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
34 extern uschar * tls_cert_serial_number(void *, uschar * mod);
35 extern uschar * tls_cert_signature(void *, uschar * mod);
36 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
37 extern uschar * tls_cert_subject(void *, uschar * mod);
38 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
39 extern uschar * tls_cert_version(void *, uschar * mod);
41 extern uschar * tls_cert_der_b64(void * cert);
42 extern uschar * tls_cert_fprt_md5(void *);
43 extern uschar * tls_cert_fprt_sha1(void *);
44 extern uschar * tls_cert_fprt_sha256(void *);
46 extern void tls_clean_env(void);
47 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
48 void *, tls_support *, uschar **);
49 extern BOOL tls_client_adjunct_start(host_item *, client_conn_ctx *,
50 const uschar *, uschar **);
51 extern void tls_client_creds_reload(BOOL);
53 extern void tls_close(void *, int);
54 extern BOOL tls_could_getc(void);
55 extern void tls_daemon_init(void);
56 extern int tls_daemon_tick(void);
57 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
58 extern BOOL tls_export_cert(uschar *, size_t, void *);
59 extern int tls_feof(void);
60 extern int tls_ferror(void);
61 extern uschar *tls_field_from_dn(uschar *, const uschar *);
62 extern void tls_free_cert(void **);
63 extern int tls_getc(unsigned);
64 extern uschar *tls_getbuf(unsigned *);
65 extern void tls_get_cache(unsigned);
66 extern BOOL tls_hasc(void);
67 extern BOOL tls_import_cert(const uschar *, void **);
68 extern BOOL tls_is_name_for_cert(const uschar *, void *);
70 extern BOOL tls_openssl_options_parse(uschar *, long *);
72 extern int tls_read(void *, uschar *, size_t);
73 extern int tls_server_start(uschar **);
74 extern void tls_shutdown_wr(void *);
75 extern BOOL tls_smtp_buffered(void);
76 extern int tls_ungetc(int);
77 #if defined(EXIM_HAVE_INOTIFY) || defined(EXIM_HAVE_KEVENT)
78 extern void tls_watch_discard_event(int);
79 extern void tls_watch_invalidate(void);
81 extern int tls_write(void *, const uschar *, size_t, BOOL);
82 extern uschar *tls_validate_require_cipher(void);
83 extern gstring *tls_version_report(gstring *);
86 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
89 #endif /*DISABLE_TLS*/
92 /* Everything else... */
94 extern acl_block *acl_read(uschar *(*)(void), uschar **);
95 extern int acl_check(int, const uschar *, uschar *, uschar **, uschar **);
96 extern uschar *acl_current_verb(void);
97 extern int acl_eval(int, uschar *, uschar **, uschar **);
98 extern uschar *acl_standalone_setvar(const uschar *, BOOL);
100 extern tree_node *acl_var_create(uschar *);
101 extern void acl_var_write(uschar *, uschar *, void *);
102 extern void add_driver_info(driver_info **, const driver_info *, size_t);
105 extern void assert_no_variables(void *, int, const char *, int);
106 extern int auth_call_pwcheck(uschar *, uschar **);
107 extern int auth_call_saslauthd(const uschar *, const uschar *,
108 const uschar *, const uschar *, uschar **);
109 extern int auth_check_serv_cond(auth_instance *);
110 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
111 extern int auth_client_item(void *, auth_instance *, const uschar **,
112 unsigned, int, uschar *, int);
115 extern int auth_get_data(uschar **, const uschar *, int);
116 extern int auth_get_no64_data(uschar **, uschar *);
117 extern int auth_prompt(const uschar *);
118 extern int auth_read_input(const uschar *);
119 extern gstring * auth_show_supported(gstring *);
120 extern uschar *authenticator_current_name(void);
122 extern gstring *authres_smtpauth(gstring *);
124 extern uschar *b64encode(const uschar *, int);
125 extern uschar *b64encode_taint(const uschar *, int, const void *);
126 extern int b64decode(const uschar *, uschar **, const void *);
127 extern int bdat_getc(unsigned);
128 extern uschar *bdat_getbuf(unsigned *);
129 extern BOOL bdat_hasc(void);
130 extern int bdat_ungetc(int);
131 extern void bdat_flush_data(void);
133 extern void bits_clear(unsigned int *, size_t, int *);
134 extern void bits_set(unsigned int *, size_t, int *);
136 extern void cancel_cutthrough_connection(BOOL, const uschar *);
137 extern gstring *cat_file(FILE *, gstring *, uschar *);
138 extern gstring *cat_file_tls(void *, gstring *, uschar *);
139 extern int check_host(void *, const uschar *, const uschar **, uschar **);
140 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
141 extern pid_t child_open_exim_function(int *, const uschar *);
142 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
144 extern pid_t child_open_function(uschar **, uschar **, int,
145 int *, int *, BOOL, const uschar *);
146 extern pid_t child_open_uid(const uschar **, const uschar **, int,
147 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
148 extern BOOL cleanup_environment(void);
149 extern void cutthrough_data_puts(uschar *, int);
150 extern void cutthrough_data_put_nl(void);
151 extern uschar *cutthrough_finaldot(void);
152 extern BOOL cutthrough_flush_send(void);
153 extern BOOL cutthrough_headers_send(void);
154 extern BOOL cutthrough_predata(void);
155 extern void release_cutthrough_connection(const uschar *);
157 extern void daemon_go(void);
158 #ifndef COMPILE_UTILITY
159 extern ssize_t daemon_client_sockname(struct sockaddr_un *, uschar **);
160 extern ssize_t daemon_notifier_sockname(struct sockaddr_un *);
163 #ifdef EXPERIMENTAL_DCC
164 extern int dcc_process(uschar **);
167 extern void debug_logging_activate(const uschar *, const uschar *);
168 extern void debug_logging_from_spool(const uschar *);
169 extern void debug_logging_stop(BOOL);
170 extern void debug_print_argv(const uschar **);
171 extern void debug_print_ids(uschar *);
172 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
173 extern void debug_print_string(uschar *);
174 extern void debug_print_tree(const char *, tree_node *);
175 extern void debug_vprintf(int, const char *, va_list);
176 extern void debug_pretrigger_setup(const uschar *);
177 extern void debug_pretrigger_discard(void);
178 extern void debug_print_socket(int);
179 extern void debug_trigger_fire(void);
181 extern void decode_bits(unsigned int *, size_t, int *,
182 const uschar *, bit_table *, int, uschar *, int);
183 extern void delete_pid_file(void);
184 extern void deliver_local(address_item *, BOOL);
185 extern address_item *deliver_make_addr(const uschar *, BOOL);
186 extern void delivery_log(int, address_item *, int, uschar *);
187 extern int deliver_message(const uschar *, BOOL, BOOL);
188 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
189 extern void deliver_set_expansions(address_item *);
190 extern int deliver_split_address(address_item *);
191 extern void deliver_succeeded(address_item *);
193 extern void delivery_re_exec(int);
195 extern void die_tainted(const uschar *, const uschar *, int);
196 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
197 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
198 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
199 extern uschar *dns_build_reverse(const uschar *);
200 extern time_t dns_expire_from_soa(dns_answer *, int);
201 extern void dns_init(BOOL, BOOL, BOOL);
202 extern BOOL dns_is_aa(const dns_answer *);
203 extern BOOL dns_is_secure(const dns_answer *);
204 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
205 extern void dns_pattern_init(void);
206 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
207 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
208 extern uschar *dns_text_type(int);
209 extern void dscp_list_to_stream(FILE *);
210 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
212 extern void enq_end(uschar *);
213 extern BOOL enq_start(uschar *, unsigned);
214 #ifndef DISABLE_EVENT
215 extern uschar *event_raise(const uschar *, const uschar *, const uschar *, int *);
216 extern void msg_event_raise(const uschar *, const address_item *);
219 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
220 extern const uschar * exim_errstr(int);
221 extern void exim_exit(int) NORETURN;
222 extern void exim_gettime(struct timeval *);
223 extern void exim_nullstd(void);
224 extern void exim_setugid(uid_t, gid_t, BOOL, const uschar *);
225 extern void exim_underbar_exit(int) NORETURN;
226 extern void exim_wait_tick(struct timeval *, int);
227 extern int exp_bool(address_item *,
228 const uschar *, const uschar *, unsigned, uschar *, BOOL bvalue,
229 const uschar *, BOOL *);
230 extern BOOL expand_check_condition(const uschar *, const uschar *, const uschar *);
231 extern uschar *expand_file_big_buffer(const uschar *);
232 extern uschar *expand_string(uschar *); /* public, cannot make const */
233 extern const uschar *expand_string_2(const uschar *, BOOL *);
234 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
235 extern uschar *expand_getkeyed(const uschar *, const uschar *);
237 extern uschar *expand_hide_passwords(uschar * );
238 extern uschar *expand_string_copy(const uschar *);
239 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
240 extern void modify_variable(uschar *, void *);
242 extern BOOL fd_ready(int, time_t);
243 extern BOOL filter_runtest(int, const uschar *, BOOL, BOOL);
245 extern uschar * fn_hdrs_added(void);
246 extern void force_fd(int, int);
248 extern void header_add(int, const char *, ...);
249 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
250 extern int header_checkname(header_line *, BOOL);
251 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
252 extern int host_address_extract_port(uschar *);
253 extern uschar *host_and_ident(BOOL);
254 extern int host_aton(const uschar *, int *);
255 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
256 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
257 extern void host_build_log_info(void);
258 extern void host_build_sender_fullhost(void);
259 extern int host_find_byname(host_item *, const uschar *, int,
260 const uschar **, BOOL);
261 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
262 uschar *, const dnssec_domains *, const uschar **, BOOL *);
263 extern ip_address_item *host_find_interfaces(void);
264 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
265 extern BOOL host_is_tls_on_connect_port(int);
266 extern int host_item_get_port(host_item *);
267 extern void host_mask(int, int *, int);
268 extern int host_name_lookup(void);
269 extern int host_nmtoa(int, const int *, int, uschar *, int);
270 extern uschar *host_ntoa(int, const void *, uschar *, int *);
271 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
273 extern uschar *imap_utf7_encode(uschar *, const uschar *,
274 uschar, uschar *, uschar **);
276 extern void invert_address(uschar *, uschar *);
277 extern int ip_addr(void *, int, const uschar *, int);
278 extern int ip_bind(int, int, uschar *, int);
279 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
280 extern int ip_connectedsocket(int, const uschar *, int, int,
281 int, host_item *, uschar **, const blob *);
282 extern int ip_get_address_family(int);
283 extern void ip_keepalive(int, const uschar *, BOOL);
284 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
285 extern int ip_socket(int, int);
287 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
288 extern int ip_unixsocket(const uschar *, uschar **);
289 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
291 extern int ipv6_nmtoa(int *, uschar *);
293 extern const uschar *local_part_quote(const uschar *);
294 extern int log_open_as_exim(const uschar * const);
295 extern void log_close_all(void);
296 extern const lookup_info * lookup_with_acq_num(unsigned);
297 #ifdef LOOKUP_MODULE_DIR
298 extern BOOL lookup_one_mod_load(const uschar *, uschar **);
302 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
303 extern BOOL macro_read_assignment(uschar *);
304 extern uschar *macros_expand(int, int *, BOOL *);
305 extern void mainlog_close(void);
306 #ifdef WITH_CONTENT_SCAN
307 extern int malware(const uschar *, BOOL, int);
308 extern int malware_in_file(const uschar *);
309 extern void malware_init(void);
310 extern gstring * malware_show_supported(gstring *);
312 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
313 unsigned int *, int, int, const uschar **);
314 extern int match_address_list_basic(const uschar *, const uschar **, int);
315 extern int match_check_list(const uschar * const *, int, tree_node **,
316 unsigned int **, int(*)(void *, const uschar *,
317 const uschar **, uschar **),
318 void *, int, const uschar *, const uschar **);
319 extern int match_isinlist(const uschar *, const uschar * const *, int,
320 tree_node **, unsigned int *, int, BOOL, const uschar **);
321 extern int match_check_string(const uschar *, const uschar *, int, mcs_flags,
324 extern void message_start(void);
325 extern void message_tidyup(void);
326 extern void md5_end(md5 *, const uschar *, int, uschar *);
327 extern void md5_mid(md5 *, const uschar *);
328 extern void md5_start(md5 *);
329 extern void millisleep(int);
330 #ifdef WITH_CONTENT_SCAN
331 struct mime_boundary_context;
332 extern int mime_acl_check(uschar *acl, FILE *f,
333 struct mime_boundary_context *, uschar **, uschar **);
334 extern int mime_decode(const uschar **);
335 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
336 extern int mime_regex(const uschar **, BOOL);
337 extern void mime_set_anomaly(int);
340 extern gstring *misc_mod_authres(gstring *);
341 extern int misc_mod_conn_init(const uschar *, const uschar *);
342 extern misc_module_info * misc_mod_find(const uschar * modname, uschar **);
343 extern misc_module_info * misc_mod_findonly(const uschar * modname);
344 extern int misc_mod_msg_init(void);
345 extern void misc_mod_smtp_reset(void);
347 extern uschar *moan_check_errorcopy(const uschar *);
348 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
350 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
351 extern BOOL moan_send_message(const uschar *, int, error_block *eblock,
352 header_line *, FILE *, uschar *);
353 extern void moan_tell_someone(uschar *, address_item *,
354 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
355 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
356 extern void moan_write_from(FILE *);
357 extern void moan_write_references(FILE *, uschar *);
358 #ifdef LOOKUP_MODULE_DIR
359 //extern void mod_load_check(const uschar *);
361 extern FILE *modefopen(const uschar *, const char *, mode_t);
363 extern int open_cutthrough_connection( address_item * addr );
365 extern uschar *parse_extract_address(const uschar *, uschar **, int *, int *, int *,
367 extern int parse_forward_list(const uschar *, int, address_item **, uschar **,
368 const uschar *, const uschar *, error_block **);
369 extern uschar *parse_find_address_end(const uschar *, BOOL);
370 extern const uschar *parse_find_at(const uschar *);
371 extern const uschar *parse_fix_phrase(const uschar *, int);
372 extern const uschar *parse_message_id(const uschar *, uschar **, uschar **);
373 extern const uschar *parse_quote_2047(const uschar *, int, const uschar *,
375 extern const uschar *parse_date_time(const uschar *str, time_t *t);
376 extern void priv_drop_temp(const uid_t, const gid_t);
377 extern void priv_restore(void);
379 extern BOOL proxy_protocol_host(void);
380 extern void proxy_protocol_setup(void);
383 extern BOOL queue_action(const uschar *, int, const uschar **, int, int);
384 extern void queue_check_only(void);
385 extern unsigned queue_count(void);
386 extern unsigned queue_count_cached(void);
387 extern void queue_list(int, const uschar **, int);
388 #ifndef DISABLE_QUEUE_RAMP
389 extern void queue_notify_daemon(const uschar * hostname);
391 extern void queue_run(qrunner *, const uschar *, const uschar *, BOOL);
393 extern int random_number(int);
394 extern const uschar *rc_to_string(int);
395 extern int rda_interpret(redirect_block *, int, const uschar *,
396 const sieve_block *, const ugid_block *, address_item **,
397 uschar **, error_block **, int *, const uschar *);
398 extern int rda_is_filter(const uschar *);
399 extern BOOL readconf_depends(driver_instance *, uschar *);
400 extern void readconf_driver_init(driver_instance **, driver_info **, int,
401 void *, int, optionlist *, int, const uschar *);
402 extern const uschar *readconf_find_option(const void *);
403 extern void readconf_main(BOOL);
404 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
405 extern BOOL readconf_print(const uschar *, const uschar *, BOOL);
406 extern uschar *readconf_printtime(int);
407 extern const uschar *readconf_readname(uschar *, int, const uschar *);
408 extern int readconf_readtime(const uschar *, int, BOOL);
409 extern void readconf_rest(void);
410 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
411 extern void readconf_save_config(const uschar *);
412 extern void read_message_body(BOOL);
413 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
414 extern BOOL receive_check_fs(int);
415 extern BOOL receive_check_set_sender(const uschar *);
416 extern BOOL receive_msg(BOOL);
417 extern int_eximarith_t receive_statvfs(BOOL, int *);
418 extern void receive_swallow_smtp(void);
419 extern int recv_fd_from_sock(int);
420 #ifdef WITH_CONTENT_SCAN
421 extern int regex(const uschar **, BOOL);
422 extern void regex_vars_clear(void);
424 extern void regex_at_daemon(const uschar *);
425 extern BOOL regex_match(const pcre2_code *, const uschar *, int, uschar **);
426 extern BOOL regex_match_and_setup(const pcre2_code *, const uschar *, int, int);
427 extern const pcre2_code *regex_compile(const uschar *, mcs_flags, uschar **,
428 pcre2_compile_context *);
429 extern const pcre2_code *regex_must_compile(const uschar *, mcs_flags, BOOL);
431 extern void retry_add_item(address_item *, const uschar *, int);
432 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
433 const uschar **, const uschar **);
434 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
435 extern const uschar *retry_host_key_build(const host_item *, BOOL,
437 extern BOOL retry_ultimate_address_timeout(const uschar *, const uschar *,
438 dbdata_retry *, time_t);
439 extern void retry_update(address_item **, address_item **, address_item **);
440 extern const uschar *rewrite_address(const uschar *, BOOL, BOOL, rewrite_rule *, int);
441 extern const uschar *rewrite_address_qualify(const uschar *, BOOL);
442 extern header_line *rewrite_header(header_line *,
443 const uschar *, const uschar *,
444 rewrite_rule *, int, BOOL);
445 extern const uschar *rewrite_one(const uschar *, int, BOOL *, BOOL, uschar *,
447 extern void rewrite_test(const uschar *);
448 extern uschar *rfc2047_decode2(uschar *, BOOL, const uschar *, int, int *,
450 extern int route_address(address_item *, address_item **, address_item **,
451 address_item **, address_item **, int);
452 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
453 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
454 extern BOOL route_findgroup(uschar *, gid_t *);
455 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
456 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
458 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
459 struct passwd **, uid_t *, uschar **);
460 extern void route_init(void);
461 extern gstring * route_show_supported(gstring *);
462 extern void route_tidyup(void);
463 extern uschar *router_current_name(void);
465 extern uschar *search_args(const lookup_info *, uschar *, uschar *, uschar **,
467 extern uschar *search_find(void *, const uschar *, const uschar *, int,
468 const uschar *, int, int, int *, const uschar *);
469 extern const lookup_info * search_findtype(const uschar *, int);
470 extern const lookup_info * search_findtype_partial(const uschar *, int *,
471 const uschar **, int *, int *, const uschar **);
472 extern void *search_open(const uschar *, const lookup_info *, int,
474 extern void search_tidyup(void);
475 extern BOOL send_fd_over_socket(int, int);
476 extern uschar *sender_helo_verified_boolstr(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 sigalrm_handler(int);
482 extern void single_queue_run(qrunner *, const uschar *, const uschar *);
483 extern int smtp_boundsock(smtp_connect_args *);
484 extern void smtp_closedown(uschar *);
485 extern void smtp_command_timeout_exit(void) NORETURN;
486 extern void smtp_command_sigterm_exit(void) NORETURN;
487 extern void smtp_data_timeout_exit(void) NORETURN;
488 extern void smtp_data_sigint_exit(void) NORETURN;
489 extern void smtp_deliver_init(void);
490 extern uschar *smtp_cmd_hist(void);
491 extern int smtp_connect(smtp_connect_args *, const blob *);
492 extern int smtp_feof(void);
493 extern int smtp_ferror(void);
494 extern uschar *smtp_get_connection_info(void);
495 extern BOOL smtp_get_interface(uschar *, int, address_item *,
496 uschar **, uschar *);
497 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
498 extern int smtp_getc(unsigned);
499 extern uschar *smtp_getbuf(unsigned *);
500 extern void smtp_get_cache(unsigned);
501 extern BOOL smtp_hasc(void);
502 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
503 extern void smtp_log_no_mail(void);
504 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
505 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int, const uschar *) NORETURN;
506 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
507 extern void *smtp_reset(void *);
508 extern void smtp_respond(uschar *, int, BOOL, uschar *);
509 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
510 extern void smtp_port_for_connect(host_item *, int);
511 extern void smtp_send_prohibition_message(int, uschar *);
512 extern int smtp_setup_msg(void);
513 extern int smtp_sock_connect(smtp_connect_args *, int, const blob *);
514 extern BOOL smtp_start_session(void);
515 extern int smtp_ungetc(int);
516 extern void smtp_verify_feed(const uschar *, unsigned);
517 extern BOOL smtp_verify_helo(void);
518 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
519 #ifdef WITH_CONTENT_SCAN
520 extern int spam(const uschar **);
521 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
523 extern void spool_clear_header_globals(void);
524 extern BOOL spool_move_message(const uschar *, const uschar *, const uschar *, const uschar *);
525 extern int spool_open_datafile(const uschar *);
526 extern int spool_open_temp(uschar *);
527 extern int spool_read_header(uschar *, BOOL, BOOL);
528 extern uschar *spool_sender_from_msgid(const uschar *);
529 extern int spool_write_header(const uschar *, int, uschar **);
530 extern int stdin_getc(unsigned);
531 extern int stdin_feof(void);
532 extern int stdin_ferror(void);
533 extern BOOL stdin_hasc(void);
534 extern int stdin_ungetc(int);
536 extern void stackdump(void);
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_append_listele_fmt(gstring *, uschar, BOOL, const char *, ...) WARN_UNUSED_RESULT;
545 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
546 extern uschar *string_base62_32(unsigned long int);
547 extern uschar *string_base62_64(unsigned long int);
548 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
549 extern int string_compare_by_pointer(const void *, const void *);
550 extern uschar *string_copy_dnsdomain(uschar *);
551 extern uschar *string_copy_malloc(const uschar *);
552 extern uschar *string_dequote(const uschar **);
553 extern uschar *string_format_size(int, uschar *);
554 extern int string_interpret_escape(const uschar **);
555 extern int string_is_ip_address(const uschar *, int *);
556 extern int string_is_ip_addressX(const uschar *, int *, const uschar **);
558 extern BOOL string_is_utf8(const uschar *);
560 extern const uschar *string_printing2(const uschar *, int);
561 extern uschar *string_split_message(uschar *);
562 extern uschar *string_unprinting(uschar *);
564 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
565 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
566 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
567 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
568 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
571 #define string_format(buf, siz, fmt, ...) \
572 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
573 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
574 const char *, ...) ALMOST_PRINTF(5,6);
576 #define string_vformat(g, flgs, fmt, ap) \
577 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
578 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
579 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
580 unsigned, unsigned, const char *, va_list);
582 #define string_open_failed(fmt, ...) \
583 string_open_failed_trc(US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
584 extern uschar *string_open_failed_trc(const uschar *, unsigned,
585 const char *, ...) PRINTF_FUNCTION(3,4);
587 #define string_nextinlist(lp, sp, b, l) \
588 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
589 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
590 const uschar * func, int line);
592 extern int strcmpic(const uschar *, const uschar *);
593 extern int strncmpic(const uschar *, const uschar *, int);
594 extern uschar *strstric(uschar *, uschar *, BOOL);
595 extern const uschar *strstric_c(const uschar *, const uschar *, BOOL);
597 extern int test_harness_fudged_queue_time(int);
598 extern void tcp_init(void);
599 #ifdef EXIM_TFO_PROBE
600 extern void tfo_probe(void);
602 extern void tls_modify_variables(tls_support *);
603 extern uschar *tod_stamp(int);
605 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
607 extern uschar *transport_current_name(void);
608 extern void transport_do_pass_socket(const uschar *, const uschar *,
609 const uschar *, uschar *, int);
610 extern void transport_init(void);
611 extern const uschar *transport_rcpt_address(address_item *, BOOL);
612 extern BOOL transport_set_up_command(const uschar ***, const uschar *,
613 unsigned, int, address_item *, const uschar *, uschar **);
614 extern void transport_update_waiting(host_item *, const uschar *);
615 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
616 extern void transport_write_reset(int);
617 extern BOOL transport_write_string(int, const char *, ...);
618 extern BOOL transport_headers_send(transport_ctx *,
619 BOOL (*)(transport_ctx *, const uschar *, int));
620 extern gstring * transport_show_supported(gstring *);
621 extern BOOL transport_write_message(transport_ctx *, int);
622 extern void tree_add_duplicate(const uschar *, address_item *);
623 extern void tree_add_nonrecipient(const uschar *);
624 extern void tree_add_unusable(const host_item *);
625 extern void tree_dup(tree_node **, tree_node *);
626 extern int tree_insertnode(tree_node **, tree_node *);
627 extern tree_node *tree_search(tree_node *, const uschar *);
628 extern void tree_write(tree_node *, FILE *);
629 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
631 #ifdef WITH_CONTENT_SCAN
632 extern void unspool_mbox(void);
635 extern gstring *utf8_version_report(gstring *);
638 extern int vaguely_random_number(int);
640 extern int vaguely_random_number_fallback(int);
642 extern int verify_address(address_item *, FILE *, int, int, int, int,
643 uschar *, uschar *, BOOL *);
644 extern int verify_check_dnsbl(int, const uschar **, uschar **);
645 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
646 uschar *, uschar *, int, int *);
647 extern int verify_check_headers(uschar **);
648 extern int verify_check_header_names_ascii(uschar **);
649 extern int verify_check_host(uschar **);
650 extern int verify_check_notblind(BOOL);
651 extern int verify_check_given_host(const uschar **, const host_item *);
652 extern int verify_check_this_host(const uschar **, unsigned int *,
653 const uschar*, const uschar *, const uschar **);
654 extern address_item *verify_checked_sender(const uschar *);
655 extern void verify_get_ident(int);
656 extern void verify_quota(uschar *);
657 extern int verify_quota_call(const uschar *, int, int, uschar **);
658 extern BOOL verify_sender(int *, uschar **);
659 extern BOOL verify_sender_preliminary(int *, uschar **);
660 extern void version_init(void);
662 extern BOOL write_chunk(transport_ctx *, const uschar *, int);
663 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
664 extern uschar *wrap_header(const uschar *, unsigned, unsigned, const uschar *, unsigned);
666 #ifdef EXPERIMENTAL_XCLIENT
667 extern uschar * xclient_smtp_command(uschar *, int *, BOOL *);
668 extern gstring * xclient_smtp_advertise_str(gstring *);
670 extern uschar *xtextencode(uschar *, int);
671 extern int xtextdecode(uschar *, uschar **);
674 /******************************************************************************/
675 /* Predicate: if an address is in a tainted pool.
676 By extension, a variable pointing to this address is tainted.
680 is_tainted(const void * p)
682 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
686 extern BOOL is_tainted_fn(const void *);
687 return is_tainted_fn(p);
692 is_incompatible(const void * old, const void * new)
694 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
698 extern BOOL is_incompatible_fn(const void *, const void *);
699 return is_incompatible_fn(old, new);
703 /******************************************************************************/
704 /* String functions */
705 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
707 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
708 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
710 return US strcat(CS dst, CCS src);
712 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
714 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
715 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
717 return US strcpy(CS dst, CCS src);
719 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
721 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
722 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
724 return US strncat(CS dst, CCS src, n);
726 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
728 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
729 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
731 return US strncpy(CS dst, CCS src, n);
733 /*XXX will likely need unchecked copy also */
736 /* Advance the string pointer given over any whitespace.
737 Return the next char as there's enough places using it to be useful. */
739 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
741 static inline uschar skip_whitespace(const uschar ** sp)
742 { while (isspace(**sp)) (*sp)++; return **sp; }
744 /* Ditto, non-whitespace */
746 #define Uskip_nonwhite(sp) skip_nonwhite(CUSS sp)
747 static inline uschar skip_nonwhite(const uschar ** sp)
748 { while (**sp && !isspace(**sp)) (*sp)++; return **sp; }
751 /******************************************************************************/
753 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
754 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
755 chown(<exim-uid>, <exim-gid>).
757 Probably because the idmapping is broken, misconfigured or set up in
758 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
759 case of misconfiguration, or if there are more such broken systems
760 out, I try to impose as least impact as possible and for now just write
761 a panic log entry pointing to the bug report. You're encouraged to
762 contact the developers, if you experience this issue.
764 fd the file descriptor (or -1 if not valid)
765 name the file name for error messages or for file operations,
770 returns 0 on success, -1 on failure */
773 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
775 return fchown(fd, owner, group)
776 ? exim_chown_failure(fd, name, owner, group) : 0;
780 exim_chown(const uschar *name, uid_t owner, gid_t group)
782 return chown(CCS name, owner, group)
783 ? exim_chown_failure(-1, name, owner, group) : 0;
785 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
787 /******************************************************************************/
788 /* String functions */
790 #if !defined(MACRO_PREDEF)
791 /*************************************************
792 * Copy and save string *
793 *************************************************/
795 /* This function assumes that memcpy() is faster than strcpy().
796 The result is explicitly nul-terminated.
799 static inline uschar *
800 string_copyn_taint_trc(const uschar * s, unsigned len,
801 const void * proto_mem, const char * func, int line)
804 unsigned slen = Ustrlen(s);
805 if (len > slen) len = slen;
806 ss = store_get_3(len + 1, proto_mem, func, line);
812 static inline uschar *
813 string_copy_taint_trc(const uschar * s, const void * proto_mem, const char * func, int line)
814 { return string_copyn_taint_trc(s, Ustrlen(s), proto_mem, func, line); }
816 static inline uschar *
817 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
818 { return string_copyn_taint_trc(s, len, s, func, line); }
819 static inline uschar *
820 string_copy_trc(const uschar * s, const char * func, int line)
821 { return string_copy_taint_trc(s, s, func, line); }
824 /* String-copy functions explicitly setting the taint status */
826 #define string_copyn_taint(s, len, proto_mem) \
827 string_copyn_taint_trc((s), (len), (proto_mem), __FUNCTION__, __LINE__)
828 #define string_copy_taint(s, proto_mem) \
829 string_copy_taint_trc((s), (proto_mem), __FUNCTION__, __LINE__)
831 /* Simple string-copy functions maintaining the taint */
833 #define string_copyn(s, len) \
834 string_copyn_trc((s), (len), __FUNCTION__, __LINE__)
835 #define string_copy(s) \
836 string_copy_trc((s), __FUNCTION__, __LINE__)
839 /*************************************************
840 * Copy, lowercase and save string *
841 *************************************************/
844 Argument: string to copy
845 Returns: copy of string in new store, with letters lowercased
848 static inline uschar *
849 string_copylc(const uschar * s)
851 uschar * ss = store_get(Ustrlen(s) + 1, s);
853 while (*s) *p++ = tolower(*s++);
860 /*************************************************
861 * Copy, lowercase, and save string, given length *
862 *************************************************/
864 /* It is assumed the data contains no zeros. A zero is added
869 n number of characters
871 Returns: copy of string in new store, with letters lowercased
874 static inline uschar *
875 string_copynlc(uschar * s, int n)
877 uschar * ss = store_get(n + 1, s);
879 while (n-- > 0) *p++ = tolower(*s++);
885 # ifndef COMPILE_UTILITY
886 /*************************************************
887 * Copy and save string in longterm store *
888 *************************************************/
890 /* This function assumes that memcpy() is faster than strcpy().
892 Argument: string to copy
893 Returns: copy of string in new store
896 static inline uschar *
897 string_copy_perm(const uschar *s, BOOL force_taint)
899 int old_pool = store_pool;
900 int len = Ustrlen(s) + 1;
903 store_pool = POOL_PERM;
904 ss = store_get(len, force_taint ? GET_TAINTED : s);
906 store_pool = old_pool;
913 /* sprintf into a buffer, taint-unchecked */
916 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
918 gstring gs = { .size = siz, .ptr = 0, .s = buf };
921 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
927 /******************************************************************************/
928 /* Growable-string functions */
930 /* Create a growable-string with some preassigned space */
932 #define string_get_tainted(size, proto_mem) \
933 string_get_tainted_trc((size), (proto_mem), __FUNCTION__, __LINE__)
935 static inline gstring *
936 string_get_tainted_trc(unsigned size, const void * proto_mem, const char * func, unsigned line)
938 gstring * g = store_get_3(sizeof(gstring) + size, proto_mem, func, line);
939 g->size = size; /*XXX would be good if we could see the actual alloc size */
945 #define string_get(size) \
946 string_get_trc((size), __FUNCTION__, __LINE__)
948 static inline gstring *
949 string_get_trc(unsigned size, const char * func, unsigned line)
951 return string_get_tainted_trc(size, GET_UNTAINTED, func, line);
954 /* NUL-terminate the C string in the growable-string, and return it. */
956 static inline uschar *
957 string_from_gstring(gstring * g)
965 len_string_from_gstring(gstring * g, uschar ** sp)
980 static inline uschar *
981 string_copy_from_gstring(gstring * g)
983 return g ? string_copyn(g->s, g->ptr) : NULL;
986 static inline unsigned
987 gstring_length(const gstring * g)
989 return g ? (unsigned)g->ptr : 0;
993 gstring_last_char(gstring * g)
995 return g && g->ptr > 0 ? g->s[g->ptr-1] : '\0';
999 gstring_trim(gstring * g, unsigned amount)
1005 gstring_trim_trailing(gstring * g, uschar c)
1007 if (gstring_last_char(g) == c) gstring_trim(g, 1);
1011 gstring_reset(gstring * g)
1017 #define gstring_release_unused(g) \
1018 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
1021 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
1023 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
1027 /* plain string append to a growable-string */
1029 static inline gstring * string_cat(gstring * g, const uschar * s)
1032 static inline gstring *
1033 string_cat(gstring * g, const uschar * s)
1035 return string_catn(g, s, Ustrlen(s));
1039 /* sprintf-append to a growable-string */
1041 #define string_fmt_append(g, fmt, ...) \
1042 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1043 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
1045 #define string_fmt_append_f(g, flgs, fmt, ...) \
1046 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
1047 flgs, fmt, __VA_ARGS__)
1049 static inline gstring *
1050 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
1051 unsigned flags, const char *format, ...)
1054 va_start(ap, format);
1055 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
1062 /* Copy the content of a string to tainted memory. The proto_mem arg
1063 will always be tainted, and suitable as a prototype. */
1066 gstring_rebuffer(gstring * g, const void * proto_mem)
1068 uschar * s = store_get_3(g->size, proto_mem, __FUNCTION__, __LINE__);
1069 memcpy(s, g->s, g->ptr);
1073 /* Append one gstring to another */
1075 static inline gstring *
1076 gstring_append(gstring * dest, gstring * item)
1079 ? dest ? string_catn(dest, item->s, item->ptr) : item
1084 # ifndef COMPILE_UTILITY
1085 /******************************************************************************/
1086 /* Use store_malloc for DNSA structs, and explicit frees. Using the same pool
1087 for them as the strings we proceed to copy from them meant they could not be
1088 released, hence blowing 64k for every DNS lookup. That mounted up. With malloc
1089 we do have to take care over marking tainted all copied strings. A separate pool
1090 could be used and would handle that implicitly. */
1092 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
1094 static inline dns_answer *
1095 store_get_dns_answer_trc(const uschar * func, unsigned line)
1097 return store_malloc_3(sizeof(dns_answer), CCS func, line);
1100 #define store_free_dns_answer(dnsa) store_free_dns_answer_trc(dnsa, CUS __FUNCTION__, __LINE__)
1103 store_free_dns_answer_trc(dns_answer * dnsa, const uschar * func, unsigned line)
1105 store_free_3(dnsa, CCS func, line);
1109 /* Check for an RR being large enough. Return TRUE iff bad. */
1111 rr_bad_size(const dns_record * rr, size_t minbytes)
1113 return rr->size < minbytes;
1116 /* Check for an RR having further data beyond a given pointer.
1117 Return TRUE iff bad. */
1119 rr_bad_increment(const dns_record * rr, const uschar * ptr, size_t minbytes)
1121 return rr_bad_size(rr, ptr - rr->data + minbytes);
1124 /******************************************************************************/
1125 /* Routines with knowledge of spool layout */
1128 spool_pname_buf(uschar * buf, int len)
1130 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
1133 static inline uschar *
1134 spool_dname(const uschar * purpose, uschar * subdir)
1136 return string_sprintf("%s/%s/%s/%s",
1137 spool_directory, queue_name, purpose, subdir);
1141 static inline uschar *
1142 spool_q_sname(const uschar * purpose, const uschar * q, const uschar * subdir)
1144 return string_sprintf("%s%s%s%s%s",
1147 *subdir ? "/" : "", subdir);
1150 static inline uschar *
1151 spool_sname(const uschar * purpose, const uschar * subdir)
1153 return spool_q_sname(purpose, queue_name, subdir);
1156 static inline uschar *
1157 spool_q_fname(const uschar * purpose, const uschar * q,
1158 const uschar * subdir, const uschar * fname, const uschar * suffix)
1160 return string_sprintf("%s/%s/%s/%s/%s%s",
1161 spool_directory, q, purpose, subdir, fname, suffix);
1164 static inline uschar *
1165 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1166 const uschar * suffix)
1168 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1169 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1170 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1171 uschar * buf = store_get(len, GET_UNTAINTED);
1172 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1173 spool_directory, queue_name, purpose, subdir, fname, suffix);
1176 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1181 set_subdir_str(uschar * subdir_str, const uschar * name,
1182 int search_sequence)
1184 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1185 ? name[MESSAGE_ID_TIME_LEN-1] : '\0';
1186 subdir_str[1] = '\0';
1189 /******************************************************************************/
1190 /* Message-ID format transition knowlege */
1193 is_new_message_id(const uschar * id)
1195 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN] == '-';
1199 is_old_message_id(const uschar * id)
1201 return id[MESSAGE_ID_TIME_LEN + 1 + MESSAGE_ID_PID_LEN_OLD] == '-';
1204 static inline unsigned
1205 spool_data_start_offset(const uschar * id)
1207 if (is_old_message_id(id)) return SPOOL_DATA_START_OFFSET_OLD;
1208 return SPOOL_DATA_START_OFFSET;
1211 /******************************************************************************/
1212 /* Time calculations */
1214 /* Diff two times (later, earlier) returning diff in 1st arg */
1216 timediff(struct timeval * later, const struct timeval * earlier)
1218 later->tv_sec -= earlier->tv_sec;
1219 if ((later->tv_usec -= earlier->tv_usec) < 0)
1222 later->tv_usec += 1000*1000;
1227 timesince(struct timeval * diff, const struct timeval * then)
1229 gettimeofday(diff, NULL);
1230 timediff(diff, then);
1233 static inline uschar *
1234 string_timediff(const struct timeval * diff)
1236 static uschar buf[16];
1238 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1239 return readconf_printtime((int)diff->tv_sec);
1241 snprintf(CS buf, sizeof(buf), "%u.%03us",
1242 (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1247 static inline uschar *
1248 string_timesince(const struct timeval * then)
1250 struct timeval diff;
1251 timesince(&diff, then);
1252 return string_timediff(&diff);
1256 report_time_since(const struct timeval * t0, const uschar * where)
1258 # ifdef MEASURE_TIMING
1259 struct timeval diff;
1260 timesince(&diff, t0);
1261 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1262 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1268 testharness_pause_ms(int millisec)
1270 #ifndef MEASURE_TIMING
1271 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1275 /******************************************************************************/
1276 /* Taint-checked file opens. Return values/errno per open(2). */
1279 exim_open2(const char *pathname, int flags)
1281 if (!is_tainted(pathname)) return open(pathname, flags);
1282 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1287 exim_open(const char *pathname, int flags, mode_t mode)
1289 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1290 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1294 #ifdef EXIM_HAVE_OPENAT
1296 exim_openat(int dirfd, const char *pathname, int flags)
1298 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1299 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1304 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1306 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1307 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1313 static inline FILE *
1314 exim_fopen(const char *pathname, const char *mode)
1316 if (!is_tainted(pathname)) return fopen(pathname, mode);
1317 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1323 exim_opendir(const uschar * name)
1325 if (!is_tainted(name)) return opendir(CCS name);
1326 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1331 /******************************************************************************/
1332 # if !defined(COMPILE_UTILITY)
1334 /* We use the PID of the head process for a connection-id. Note that
1335 this is only for tracking a received connection and what it directly
1336 causes; there is no inttent to describe transport-initiated TCP connections.
1337 The value is intented to be a cookie usable for logging, and we might change
1338 the generator for it at any time. */
1341 set_connection_id(void)
1343 connection_id = string_sprintf("%lu", (u_long)getpid());
1347 /* Process manipulation */
1350 exim_fork(const unsigned char * purpose)
1354 debug_printf_indent("%s forking for %s\n", process_purpose, purpose);
1355 if ((pid = fork()) == 0)
1357 f.daemon_listen = FALSE;
1358 process_purpose = purpose;
1359 DEBUG(D_any) debug_printf_indent("postfork: %s\n", purpose);
1363 testharness_pause_ms(100); /* let child work */
1364 DEBUG(D_any) debug_printf_indent("%s forked for %s: %d\n",
1365 process_purpose, purpose, (int)pid);
1372 child_open_exim(int * fdptr, const uschar * purpose)
1373 { return child_open_exim_function(fdptr, purpose); }
1376 child_open_exim2(int * fdptr, uschar * sender,
1377 uschar * sender_auth, const uschar * purpose)
1378 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1381 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1382 int *outfdptr, BOOL make_leader, const uschar * purpose)
1383 { return child_open_function(argv, envp, newumask, infdptr,
1384 outfdptr, make_leader, purpose);
1387 /* Return 1 if fd is usable per pollbits, else 0 */
1389 poll_one_fd(int fd, short pollbits, int tmo_millisec)
1391 struct pollfd p = {.fd = fd, .events = pollbits};
1392 return poll(&p, 1, tmo_millisec);
1395 /******************************************************************************/
1396 /* Client-side smtp log string, for debug */
1399 smtp_debug_cmd_log_init(void)
1401 # ifndef DISABLE_CLIENT_CMD_LOG
1402 int old_pool = store_pool;
1403 store_pool = POOL_PERM;
1404 client_cmd_log = string_get_tainted(56, GET_TAINTED);
1405 *client_cmd_log->s = '\0';
1406 store_pool = old_pool;
1412 smtp_debug_cmd(const uschar * buf, int mode)
1414 HDEBUG(D_transport|D_acl|D_v) debug_printf_indent(" SMTP%c> %s\n",
1415 mode == SCMD_BUFFER ? '|' : mode == SCMD_MORE ? '+' : '>', buf);
1417 # ifndef DISABLE_CLIENT_CMD_LOG
1419 int len = Ustrcspn(buf, " \n"), old_pool = store_pool;
1420 store_pool = POOL_PERM; /* Main pool ACL allocations eg. callouts get released */
1421 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf, MIN(len, 8));
1422 if (mode == SCMD_BUFFER)
1423 client_cmd_log = string_catn(client_cmd_log, US"|", 1);
1424 else if (mode == SCMD_MORE)
1425 client_cmd_log = string_catn(client_cmd_log, US"+", 1);
1426 store_pool = old_pool;
1432 /* This might be called both due to callout and then from delivery.
1433 Use memory that will not be released between those phases.
1436 smtp_debug_resp(const uschar * buf)
1438 # ifndef DISABLE_CLIENT_CMD_LOG
1439 int old_pool = store_pool;
1440 store_pool = POOL_PERM;
1441 client_cmd_log = string_append_listele_n(client_cmd_log, ':', buf,
1442 buf[3] == '-' ? 4 : 3);
1443 store_pool = old_pool;
1449 smtp_debug_cmd_report(void)
1451 # ifndef DISABLE_CLIENT_CMD_LOG
1452 if (client_cmd_log && *client_cmd_log->s)
1454 debug_printf("cmdlog: '%Y'\n", client_cmd_log);
1455 gstring_reset(client_cmd_log);
1458 debug_printf("cmdlog: (unset)\n");
1465 expand_max_rcpt(const uschar * str_max_rcpt)
1467 const uschar * s = expand_cstring(str_max_rcpt);
1469 return !s || !*s || (res = Uatoi(s)) == 0 ? UNLIMITED_ADDRS : res;
1472 /******************************************************************************/
1473 /* Queue-runner operations */
1476 is_onetime_qrun(void)
1478 return qrunners && !qrunners->next && qrunners->interval == 0;
1482 is_multiple_qrun(void)
1484 return qrunners && (qrunners->interval > 0 || qrunners->next);
1488 # endif /* !COMPILE_UTILITY */
1490 /******************************************************************************/
1491 #endif /* !MACRO_PREDEF */
1493 #endif /* _FUNCTIONS_H_ */
1497 /* End of functions.h */