Debug: socket details
[exim.git] / src / src / functions.h
1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
4
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
8
9
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. */
14 #ifndef _FUNCTIONS_H_
15 #define _FUNCTIONS_H_
16
17 #include <ctype.h>
18 #include <sys/time.h>
19
20
21 #ifdef EXIM_PERL
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 *);
26 #endif
27
28
29 #ifndef DISABLE_TLS
30 extern const char *
31 std_dh_prime_default(void);
32 extern const char *
33 std_dh_prime_named(const uschar *);
34
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);
47
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 *);
52
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
57 extern void tls_close(void *, int);
58 extern BOOL tls_could_read(void);
59 extern void tls_daemon_init(void);
60 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
61 extern BOOL tls_export_cert(uschar *, size_t, void *);
62 extern int tls_feof(void);
63 extern int tls_ferror(void);
64 extern void tls_free_cert(void **);
65 extern int tls_getc(unsigned);
66 extern uschar *tls_getbuf(unsigned *);
67 extern void tls_get_cache(void);
68 extern BOOL tls_import_cert(const uschar *, void **);
69 extern int tls_read(void *, uschar *, size_t);
70 extern int tls_server_start(const uschar *, uschar **);
71 extern BOOL tls_smtp_buffered(void);
72 extern int tls_ungetc(int);
73 extern int tls_write(void *, const uschar *, size_t, BOOL);
74 extern uschar *tls_validate_require_cipher(void);
75 extern void tls_version_report(FILE *);
76 # ifdef USE_OPENSSL
77 extern BOOL tls_openssl_options_parse(uschar *, long *);
78 # endif
79 extern uschar * tls_field_from_dn(uschar *, const uschar *);
80 extern BOOL tls_is_name_for_cert(const uschar *, void *);
81
82 # ifdef SUPPORT_DANE
83 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
84 # endif
85
86 #endif /*DISABLE_TLS*/
87
88
89 /* Everything else... */
90
91 extern acl_block *acl_read(uschar *(*)(void), uschar **);
92 extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
93 extern int acl_eval(int, uschar *, uschar **, uschar **);
94
95 extern tree_node *acl_var_create(uschar *);
96 extern void acl_var_write(uschar *, uschar *, void *);
97
98 #ifdef EXPERIMENTAL_ARC
99 extern void *arc_ams_setup_sign_bodyhash(void);
100 extern const uschar *arc_header_feed(gstring *, BOOL);
101 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
102 extern void arc_sign_init(void);
103 extern const uschar *acl_verify_arc(void);
104 extern uschar * fn_arc_domains(void);
105 #endif
106
107 extern void assert_no_variables(void *, int, const char *, int);
108 extern int auth_call_pam(const uschar *, uschar **);
109 extern int auth_call_pwcheck(uschar *, uschar **);
110 extern int auth_call_radius(const uschar *, uschar **);
111 extern int auth_call_saslauthd(const uschar *, const uschar *,
112 const uschar *, const uschar *, uschar **);
113 extern int auth_check_serv_cond(auth_instance *);
114 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
115 extern int auth_client_item(void *, auth_instance *, const uschar **,
116 unsigned, int, uschar *, int);
117
118
119 extern int auth_get_data(uschar **, const uschar *, int);
120 extern int auth_get_no64_data(uschar **, uschar *);
121 extern int auth_prompt(const uschar *);
122 extern int auth_read_input(const uschar *);
123 extern gstring * auth_show_supported(gstring *);
124 extern uschar *auth_xtextencode(uschar *, int);
125 extern int auth_xtextdecode(uschar *, uschar **);
126
127 #ifdef EXPERIMENTAL_ARC
128 extern gstring *authres_arc(gstring *);
129 #endif
130 #ifndef DISABLE_DKIM
131 extern gstring *authres_dkim(gstring *);
132 #endif
133 #ifdef SUPPORT_DMARC
134 extern gstring *authres_dmarc(gstring *);
135 #endif
136 extern gstring *authres_smtpauth(gstring *);
137 #ifdef SUPPORT_SPF
138 extern gstring *authres_spf(gstring *);
139 #endif
140
141 extern uschar *b64encode(const uschar *, int);
142 extern uschar *b64encode_taint(const uschar *, int, BOOL);
143 extern int b64decode(const uschar *, uschar **);
144 extern int bdat_getc(unsigned);
145 extern uschar *bdat_getbuf(unsigned *);
146 extern int bdat_ungetc(int);
147 extern void bdat_flush_data(void);
148
149 extern void bits_clear(unsigned int *, size_t, int *);
150 extern void bits_set(unsigned int *, size_t, int *);
151
152 extern void cancel_cutthrough_connection(BOOL, const uschar *);
153 extern gstring *cat_file(FILE *, gstring *, uschar *);
154 extern gstring *cat_file_tls(void *, gstring *, uschar *);
155 extern int check_host(void *, const uschar *, const uschar **, uschar **);
156 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
157 extern pid_t child_open_exim_function(int *, const uschar *);
158 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
159 const uschar *);
160 extern pid_t child_open_function(uschar **, uschar **, int,
161 int *, int *, BOOL, const uschar *);
162 extern pid_t child_open_uid(const uschar **, const uschar **, int,
163 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
164 extern BOOL cleanup_environment(void);
165 extern void cutthrough_data_puts(uschar *, int);
166 extern void cutthrough_data_put_nl(void);
167 extern uschar *cutthrough_finaldot(void);
168 extern BOOL cutthrough_flush_send(void);
169 extern BOOL cutthrough_headers_send(void);
170 extern BOOL cutthrough_predata(void);
171 extern void release_cutthrough_connection(const uschar *);
172
173 extern void daemon_go(void);
174
175 #ifdef EXPERIMENTAL_DCC
176 extern int dcc_process(uschar **);
177 #endif
178
179 extern void debug_logging_activate(uschar *, uschar *);
180 extern void debug_logging_stop(void);
181 extern void debug_print_argv(const uschar **);
182 extern void debug_print_ids(uschar *);
183 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
184 extern void debug_print_string(uschar *);
185 extern void debug_print_tree(tree_node *);
186 extern void debug_vprintf(int, const char *, va_list);
187 extern void debug_print_socket(int);
188
189 extern void decode_bits(unsigned int *, size_t, int *,
190 uschar *, bit_table *, int, uschar *, int);
191 extern void delete_pid_file(void);
192 extern address_item *deliver_make_addr(uschar *, BOOL);
193 extern void delivery_log(int, address_item *, int, uschar *);
194 extern int deliver_message(uschar *, BOOL, BOOL);
195 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
196 extern void deliver_set_expansions(address_item *);
197 extern int deliver_split_address(address_item *);
198 extern void deliver_succeeded(address_item *);
199
200 extern uschar *deliver_get_sender_address (uschar *id);
201 extern void delivery_re_exec(int);
202
203 extern void die_tainted(const uschar *, const uschar *, int);
204 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
205 #ifndef DISABLE_DKIM
206 extern uschar *dkim_exim_query_dns_txt(const uschar *);
207 extern void dkim_exim_sign_init(void);
208
209 extern BOOL dkim_transport_write_message(transport_ctx *,
210 struct ob_dkim *, const uschar ** errstr);
211 #endif
212 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
213 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
214 extern uschar *dns_build_reverse(const uschar *);
215 extern time_t dns_expire_from_soa(dns_answer *, int);
216 extern void dns_init(BOOL, BOOL, BOOL);
217 extern BOOL dns_is_aa(const dns_answer *);
218 extern BOOL dns_is_secure(const dns_answer *);
219 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
220 extern void dns_pattern_init(void);
221 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
222 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
223 extern uschar *dns_text_type(int);
224 extern void dscp_list_to_stream(FILE *);
225 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
226
227 extern void enq_end(uschar *);
228 extern BOOL enq_start(uschar *, unsigned);
229 #ifndef DISABLE_EVENT
230 extern uschar *event_raise(uschar *, const uschar *, uschar *);
231 extern void msg_event_raise(const uschar *, const address_item *);
232 #endif
233
234 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
235 extern const uschar * exim_errstr(int);
236 extern void exim_exit(int) NORETURN;
237 extern void exim_nullstd(void);
238 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
239 extern void exim_underbar_exit(int) NORETURN;
240 extern void exim_wait_tick(struct timeval *, int);
241 extern int exp_bool(address_item *addr,
242 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
243 uschar *svalue, BOOL *rvalue);
244 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
245 extern uschar *expand_file_big_buffer(const uschar *);
246 extern uschar *expand_string(uschar *); /* public, cannot make const */
247 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
248 extern uschar *expand_getkeyed(const uschar *, const uschar *);
249
250 extern uschar *expand_hide_passwords(uschar * );
251 extern uschar *expand_string_copy(const uschar *);
252 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
253 extern void modify_variable(uschar *, void *);
254
255 extern BOOL fd_ready(int, time_t);
256
257 extern int filter_interpret(uschar *, int, address_item **, uschar **);
258 extern BOOL filter_personal(string_item *, BOOL);
259 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
260 extern BOOL filter_system_interpret(address_item **, uschar **);
261
262 extern uschar * fn_hdrs_added(void);
263
264 extern void header_add(int, const char *, ...);
265 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
266 extern int header_checkname(header_line *, BOOL);
267 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
268 extern int host_address_extract_port(uschar *);
269 extern uschar *host_and_ident(BOOL);
270 extern int host_aton(const uschar *, int *);
271 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
272 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
273 extern void host_build_log_info(void);
274 extern void host_build_sender_fullhost(void);
275 extern int host_find_byname(host_item *, const uschar *, int,
276 const uschar **, BOOL);
277 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
278 uschar *, const dnssec_domains *, const uschar **, BOOL *);
279 extern ip_address_item *host_find_interfaces(void);
280 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
281 extern BOOL host_is_tls_on_connect_port(int);
282 extern int host_item_get_port(host_item *);
283 extern void host_mask(int, int *, int);
284 extern int host_name_lookup(void);
285 extern int host_nmtoa(int, int *, int, uschar *, int);
286 extern uschar *host_ntoa(int, const void *, uschar *, int *);
287 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
288
289 extern uschar *imap_utf7_encode(uschar *, const uschar *,
290 uschar, uschar *, uschar **);
291
292 extern void invert_address(uschar *, uschar *);
293 extern int ip_addr(void *, int, const uschar *, int);
294 extern int ip_bind(int, int, uschar *, int);
295 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
296 extern int ip_connectedsocket(int, const uschar *, int, int,
297 int, host_item *, uschar **, const blob *);
298 extern int ip_get_address_family(int);
299 extern void ip_keepalive(int, const uschar *, BOOL);
300 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
301 extern int ip_socket(int, int);
302
303 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
304 extern int ip_unixsocket(const uschar *, uschar **);
305 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
306
307 extern int ipv6_nmtoa(int *, uschar *);
308
309 extern uschar *local_part_quote(uschar *);
310 extern int log_create(uschar *);
311 extern int log_create_as_exim(uschar *);
312 extern void log_close_all(void);
313
314 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
315 extern BOOL macro_read_assignment(uschar *);
316 extern uschar *macros_expand(int, int *, BOOL *);
317 extern void mainlog_close(void);
318 #ifdef WITH_CONTENT_SCAN
319 extern int malware(const uschar *, int);
320 extern int malware_in_file(uschar *);
321 extern void malware_init(void);
322 extern gstring * malware_show_supported(gstring *);
323 #endif
324 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
325 unsigned int *, int, int, const uschar **);
326 extern int match_address_list_basic(const uschar *, const uschar **, int);
327 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
328 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
329 const uschar *, const uschar **);
330 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
331 unsigned int *, int, BOOL, const uschar **);
332 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
333 const uschar **);
334 extern void md5_end(md5 *, const uschar *, int, uschar *);
335 extern void md5_mid(md5 *, const uschar *);
336 extern void md5_start(md5 *);
337 extern void millisleep(int);
338 #ifdef WITH_CONTENT_SCAN
339 struct mime_boundary_context;
340 extern int mime_acl_check(uschar *acl, FILE *f,
341 struct mime_boundary_context *, uschar **, uschar **);
342 extern int mime_decode(const uschar **);
343 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
344 extern int mime_regex(const uschar **);
345 extern void mime_set_anomaly(int);
346 #endif
347 extern uschar *moan_check_errorcopy(uschar *);
348 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
349 BOOL, uschar *);
350 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
351 extern BOOL moan_send_message(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 extern FILE *modefopen(const uschar *, const char *, mode_t);
359
360 extern int open_cutthrough_connection( address_item * addr );
361
362 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
363 BOOL);
364 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
365 const uschar *, uschar *, error_block **);
366 extern uschar *parse_find_address_end(uschar *, BOOL);
367 extern uschar *parse_find_at(uschar *);
368 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
369 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
370 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
371 extern uschar *parse_date_time(uschar *str, time_t *t);
372 extern int vaguely_random_number(int);
373 #ifndef DISABLE_TLS
374 extern int vaguely_random_number_fallback(int);
375 #endif
376
377 extern BOOL queue_action(uschar *, int, uschar **, int, int);
378 extern void queue_check_only(void);
379 extern unsigned queue_count(void);
380 extern unsigned queue_count_cached(void);
381 extern void queue_list(int, uschar **, int);
382 #ifdef EXPERIMENTAL_QUEUE_RAMP
383 extern void queue_notify_daemon(const uschar * hostname);
384 #endif
385 extern void queue_run(uschar *, uschar *, BOOL);
386
387 extern int random_number(int);
388 extern const uschar *rc_to_string(int);
389 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
390 uschar *, uschar *, uschar *, ugid_block *, address_item **,
391 uschar **, error_block **, int *, uschar *);
392 extern int rda_is_filter(const uschar *);
393 extern BOOL readconf_depends(driver_instance *, uschar *);
394 extern void readconf_driver_init(uschar *, driver_instance **,
395 driver_info *, int, void *, int, optionlist *, int);
396 extern uschar *readconf_find_option(void *);
397 extern void readconf_main(BOOL);
398 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
399 extern BOOL readconf_print(uschar *, uschar *, BOOL);
400 extern uschar *readconf_printtime(int);
401 extern uschar *readconf_readname(uschar *, int, uschar *);
402 extern int readconf_readtime(const uschar *, int, BOOL);
403 extern void readconf_rest(void);
404 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
405 extern void readconf_save_config(const uschar *);
406 extern void read_message_body(BOOL);
407 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
408 extern BOOL receive_check_fs(int);
409 extern BOOL receive_check_set_sender(uschar *);
410 extern BOOL receive_msg(BOOL);
411 extern int_eximarith_t receive_statvfs(BOOL, int *);
412 extern void receive_swallow_smtp(void);
413 #ifdef WITH_CONTENT_SCAN
414 extern int regex(const uschar **);
415 #endif
416 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
417 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
418 extern void retry_add_item(address_item *, uschar *, int);
419 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
420 uschar **, uschar **);
421 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
422 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
423 dbdata_retry *, time_t);
424 extern void retry_update(address_item **, address_item **, address_item **);
425 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
426 extern uschar *rewrite_address_qualify(uschar *, BOOL);
427 extern header_line *rewrite_header(header_line *,
428 const uschar *, const uschar *,
429 rewrite_rule *, int, BOOL);
430 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
431 rewrite_rule *);
432 extern void rewrite_test(uschar *);
433 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
434 uschar **);
435 extern int route_address(address_item *, address_item **, address_item **,
436 address_item **, address_item **, int);
437 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
438 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
439 extern BOOL route_findgroup(uschar *, gid_t *);
440 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
441 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
442 uschar **);
443 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
444 struct passwd **, uid_t *, uschar **);
445 extern void route_init(void);
446 extern gstring * route_show_supported(gstring *);
447 extern void route_tidyup(void);
448
449 extern uschar *search_find(void *, const uschar *, uschar *, int,
450 const uschar *, int, int, int *, const uschar *);
451 extern int search_findtype(const uschar *, int);
452 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
453 int *, const uschar **);
454 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
455 extern void search_tidyup(void);
456 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
457 extern void sha1_end(hctx *, const uschar *, int, uschar *);
458 extern void sha1_mid(hctx *, const uschar *);
459 extern void sha1_start(hctx *);
460 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
461 uschar *, address_item **, uschar **);
462 extern void sigalrm_handler(int);
463 extern BOOL smtp_buffered(void);
464 extern void smtp_closedown(uschar *);
465 extern void smtp_command_timeout_exit(void) NORETURN;
466 extern void smtp_command_sigterm_exit(void) NORETURN;
467 extern void smtp_data_timeout_exit(void) NORETURN;
468 extern void smtp_data_sigint_exit(void) NORETURN;
469 extern void smtp_deliver_init(void);
470 extern uschar *smtp_cmd_hist(void);
471 extern int smtp_connect(smtp_connect_args *, const blob *);
472 extern int smtp_sock_connect(host_item *, int, int, uschar *,
473 transport_instance * tb, int, const blob *);
474 extern int smtp_feof(void);
475 extern int smtp_ferror(void);
476 extern uschar *smtp_get_connection_info(void);
477 extern BOOL smtp_get_interface(uschar *, int, address_item *,
478 uschar **, uschar *);
479 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
480 extern int smtp_getc(unsigned);
481 extern uschar *smtp_getbuf(unsigned *);
482 extern void smtp_get_cache(void);
483 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
484 extern void smtp_log_no_mail(void);
485 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
486 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
487 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
488 extern void *smtp_reset(void *);
489 extern void smtp_respond(uschar *, int, BOOL, uschar *);
490 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
491 extern void smtp_port_for_connect(host_item *, int);
492 extern void smtp_send_prohibition_message(int, uschar *);
493 extern int smtp_setup_msg(void);
494 extern BOOL smtp_start_session(void);
495 extern int smtp_ungetc(int);
496 extern BOOL smtp_verify_helo(void);
497 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
498 #ifdef WITH_CONTENT_SCAN
499 extern int spam(const uschar **);
500 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
501 #endif
502 extern void spool_clear_header_globals(void);
503 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
504 extern int spool_open_datafile(uschar *);
505 extern int spool_open_temp(uschar *);
506 extern int spool_read_header(uschar *, BOOL, BOOL);
507 extern int spool_write_header(uschar *, int, uschar **);
508 extern int stdin_getc(unsigned);
509 extern int stdin_feof(void);
510 extern int stdin_ferror(void);
511 extern int stdin_ungetc(int);
512
513 extern void store_exit(void);
514 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
515 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
516 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
517 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
518 extern uschar *string_base62(unsigned long int);
519 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
520 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
521 extern int string_compare_by_pointer(const void *, const void *);
522 extern uschar *string_copy_dnsdomain(uschar *);
523 extern uschar *string_copy_malloc(const uschar *);
524 extern uschar *string_dequote(const uschar **);
525 extern uschar *string_format_size(int, uschar *);
526 extern int string_interpret_escape(const uschar **);
527 extern int string_is_ip_address(const uschar *, int *);
528 #ifdef SUPPORT_I18N
529 extern BOOL string_is_utf8(const uschar *);
530 #endif
531 extern const uschar *string_printing2(const uschar *, BOOL);
532 extern uschar *string_split_message(uschar *);
533 extern uschar *string_unprinting(uschar *);
534 #ifdef SUPPORT_I18N
535 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
536 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
537 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
538 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
539 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
540 #endif
541
542 #define string_format(buf, siz, fmt, ...) \
543 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
544 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
545 const char *, ...) ALMOST_PRINTF(5,6);
546
547 #define string_vformat(g, flgs, fmt, ap) \
548 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
549 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
550 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
551 unsigned, unsigned, const char *, va_list);
552
553 #define string_open_failed(eno, fmt, ...) \
554 string_open_failed_trc(eno, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
555 extern uschar *string_open_failed_trc(int, const uschar *, unsigned,
556 const char *, ...) PRINTF_FUNCTION(4,5);
557
558 #define string_nextinlist(lp, sp, b, l) \
559 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
560 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
561 const uschar * func, int line);
562
563 extern int strcmpic(const uschar *, const uschar *);
564 extern int strncmpic(const uschar *, const uschar *, int);
565 extern uschar *strstric(uschar *, uschar *, BOOL);
566
567 extern int test_harness_fudged_queue_time(int);
568 extern void tcp_init(void);
569 #ifdef EXIM_TFO_PROBE
570 extern void tfo_probe(void);
571 #endif
572 extern void tls_modify_variables(tls_support *);
573 extern uschar *tod_stamp(int);
574
575 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
576 BOOL *, oicf, void*);
577 extern void transport_init(void);
578 extern void transport_do_pass_socket(const uschar *, const uschar *,
579 const uschar *, uschar *, int);
580 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
581 int);
582 extern uschar *transport_rcpt_address(address_item *, BOOL);
583 extern BOOL transport_set_up_command(const uschar ***, uschar *,
584 BOOL, int, address_item *, uschar *, uschar **);
585 extern void transport_update_waiting(host_item *, uschar *);
586 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
587 extern void transport_write_reset(int);
588 extern BOOL transport_write_string(int, const char *, ...);
589 extern BOOL transport_headers_send(transport_ctx *,
590 BOOL (*)(transport_ctx *, uschar *, int));
591 extern gstring * transport_show_supported(gstring *);
592 extern BOOL transport_write_message(transport_ctx *, int);
593 extern void tree_add_duplicate(uschar *, address_item *);
594 extern void tree_add_nonrecipient(uschar *);
595 extern void tree_add_unusable(host_item *);
596 extern void tree_dup(tree_node **, tree_node *);
597 extern int tree_insertnode(tree_node **, tree_node *);
598 extern tree_node *tree_search(tree_node *, const uschar *);
599 extern void tree_write(tree_node *, FILE *);
600 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
601
602 #ifdef WITH_CONTENT_SCAN
603 extern void unspool_mbox(void);
604 #endif
605 #ifdef SUPPORT_I18N
606 extern void utf8_version_report(FILE *);
607 #endif
608
609 extern int verify_address(address_item *, FILE *, int, int, int, int,
610 uschar *, uschar *, BOOL *);
611 extern int verify_check_dnsbl(int, const uschar **, uschar **);
612 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
613 uschar *, uschar *, int, int *);
614 extern int verify_check_headers(uschar **);
615 extern int verify_check_header_names_ascii(uschar **);
616 extern int verify_check_host(uschar **);
617 extern int verify_check_notblind(BOOL);
618 extern int verify_check_given_host(const uschar **, const host_item *);
619 extern int verify_check_this_host(const uschar **, unsigned int *,
620 const uschar*, const uschar *, const uschar **);
621 extern address_item *verify_checked_sender(uschar *);
622 extern void verify_get_ident(int);
623 extern BOOL verify_sender(int *, uschar **);
624 extern BOOL verify_sender_preliminary(int *, uschar **);
625 extern void version_init(void);
626
627 extern BOOL write_chunk(transport_ctx *, uschar *, int);
628 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
629
630
631 /******************************************************************************/
632 /* Predicate: if an address is in a tainted pool.
633 By extension, a variable pointing to this address is tainted.
634 */
635
636 static inline BOOL
637 is_tainted(const void * p)
638 {
639 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
640 return FALSE;
641
642 #else
643 extern BOOL is_tainted_fn(const void *);
644 return is_tainted_fn(p);
645 #endif
646 }
647
648 /******************************************************************************/
649 /* String functions */
650 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
651 {
652 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
653 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
654 #endif
655 return US strcat(CS dst, CCS src);
656 }
657 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
658 {
659 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
660 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
661 #endif
662 return US strcpy(CS dst, CCS src);
663 }
664 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
665 {
666 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
667 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
668 #endif
669 return US strncat(CS dst, CCS src, n);
670 }
671 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
672 {
673 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
674 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
675 #endif
676 return US strncpy(CS dst, CCS src, n);
677 }
678 /*XXX will likely need unchecked copy also */
679
680
681 /* Advance the string pointer given over any whitespace.
682 Return the next char as there's enought places using it to be useful. */
683
684 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
685
686 static inline uschar skip_whitespace(const uschar ** sp)
687 { while (isspace(**sp)) (*sp)++; return **sp; }
688
689
690 /******************************************************************************/
691
692 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
693 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
694 chown(<exim-uid>, <exim-gid>).
695
696 Probably because the idmapping is broken, misconfigured or set up in
697 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
698 case of misconfiguration, or if there are more such broken systems
699 out, I try to impose as least impact as possible and for now just write
700 a panic log entry pointing to the bug report. You're encouraged to
701 contact the developers, if you experience this issue.
702
703 fd the file descriptor (or -1 if not valid)
704 name the file name for error messages or for file operations,
705 if fd is < 0
706 owner the owner
707 group the group
708
709 returns 0 on success, -1 on failure */
710
711 static inline int
712 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
713 {
714 return fchown(fd, owner, group)
715 ? exim_chown_failure(fd, name, owner, group) : 0;
716 }
717
718 static inline int
719 exim_chown(const uschar *name, uid_t owner, gid_t group)
720 {
721 return chown(CCS name, owner, group)
722 ? exim_chown_failure(-1, name, owner, group) : 0;
723 }
724 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
725
726 /******************************************************************************/
727 /* String functions */
728
729 #if !defined(MACRO_PREDEF)
730 /*************************************************
731 * Copy and save string *
732 *************************************************/
733
734 /* This function assumes that memcpy() is faster than strcpy().
735 The result is explicitly nul-terminated.
736 */
737
738 static inline uschar *
739 string_copyn_taint_trc(const uschar * s, unsigned len,
740 BOOL tainted, const char * func, int line)
741 {
742 uschar * ss = store_get_3(len + 1, tainted, func, line);
743 memcpy(ss, s, len);
744 ss[len] = '\0';
745 return ss;
746 }
747
748 static inline uschar *
749 string_copy_taint_trc(const uschar * s, BOOL tainted, const char * func, int line)
750 { return string_copyn_taint_trc(s, Ustrlen(s), tainted, func, line); }
751
752 static inline uschar *
753 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
754 { return string_copyn_taint_trc(s, len, is_tainted(s), func, line); }
755 static inline uschar *
756 string_copy_trc(const uschar * s, const char * func, int line)
757 { return string_copy_taint_trc(s, is_tainted(s), func, line); }
758
759
760 /* String-copy functions explicitly setting the taint status */
761
762 #define string_copyn_taint(s, len, tainted) \
763 string_copyn_taint_trc((s), (len), (tainted), __FUNCTION__, __LINE__)
764 #define string_copy_taint(s, tainted) \
765 string_copy_taint_trc((s), (tainted), __FUNCTION__, __LINE__)
766
767 /* Simple string-copy functions maintaining the taint */
768
769 #define string_copyn(s, len) \
770 string_copyn_taint_trc((s), (len), is_tainted(s), __FUNCTION__, __LINE__)
771 #define string_copy(s) \
772 string_copy_taint_trc((s), is_tainted(s), __FUNCTION__, __LINE__)
773
774
775 /*************************************************
776 * Copy, lowercase and save string *
777 *************************************************/
778
779 /*
780 Argument: string to copy
781 Returns: copy of string in new store, with letters lowercased
782 */
783
784 static inline uschar *
785 string_copylc(const uschar *s)
786 {
787 uschar *ss = store_get(Ustrlen(s) + 1, is_tainted(s));
788 uschar *p = ss;
789 while (*s != 0) *p++ = tolower(*s++);
790 *p = 0;
791 return ss;
792 }
793
794
795
796 /*************************************************
797 * Copy, lowercase, and save string, given length *
798 *************************************************/
799
800 /* It is assumed the data contains no zeros. A zero is added
801 onto the end.
802
803 Arguments:
804 s string to copy
805 n number of characters
806
807 Returns: copy of string in new store, with letters lowercased
808 */
809
810 static inline uschar *
811 string_copynlc(uschar *s, int n)
812 {
813 uschar *ss = store_get(n + 1, is_tainted(s));
814 uschar *p = ss;
815 while (n-- > 0) *p++ = tolower(*s++);
816 *p = 0;
817 return ss;
818 }
819
820
821 # ifndef COMPILE_UTILITY
822 /*************************************************
823 * Copy and save string in longterm store *
824 *************************************************/
825
826 /* This function assumes that memcpy() is faster than strcpy().
827
828 Argument: string to copy
829 Returns: copy of string in new store
830 */
831
832 static inline uschar *
833 string_copy_perm(const uschar *s, BOOL force_taint)
834 {
835 int old_pool = store_pool;
836 int len = Ustrlen(s) + 1;
837 uschar *ss;
838
839 store_pool = POOL_PERM;
840 ss = store_get(len, force_taint || is_tainted(s));
841 memcpy(ss, s, len);
842 store_pool = old_pool;
843 return ss;
844 }
845 # endif
846
847
848
849 /* sprintf into a buffer, taint-unchecked */
850
851 static inline void
852 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
853 {
854 gstring gs = { .size = siz, .ptr = 0, .s = buf };
855 va_list ap;
856 va_start(ap, fmt);
857 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
858 va_end(ap);
859 }
860
861
862
863 /******************************************************************************/
864 /* Growable-string functions */
865
866 /* Create a growable-string with some preassigned space */
867
868 #define string_get_tainted(size, tainted) \
869 string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
870
871 static inline gstring *
872 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
873 {
874 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
875 g->size = size;
876 g->ptr = 0;
877 g->s = US(g + 1);
878 return g;
879 }
880
881 #define string_get(size) \
882 string_get_trc((size), __FUNCTION__, __LINE__)
883
884 static inline gstring *
885 string_get_trc(unsigned size, const char * func, unsigned line)
886 {
887 return string_get_tainted_trc(size, FALSE, func, line);
888 }
889
890 /* NUL-terminate the C string in the growable-string, and return it. */
891
892 static inline uschar *
893 string_from_gstring(gstring * g)
894 {
895 if (!g) return NULL;
896 g->s[g->ptr] = '\0';
897 return g->s;
898 }
899
900 static inline unsigned
901 gstring_length(const gstring * g)
902 {
903 return g ? (unsigned)g->ptr : 0;
904 }
905
906
907 #define gstring_release_unused(g) \
908 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
909
910 static inline void
911 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
912 {
913 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
914 }
915
916
917 /* sprintf-append to a growable-string */
918
919 #define string_fmt_append(g, fmt, ...) \
920 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
921 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
922
923 #define string_fmt_append_f(g, flgs, fmt, ...) \
924 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
925 flgs, fmt, __VA_ARGS__)
926
927 static inline gstring *
928 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
929 unsigned flags, const char *format, ...)
930 {
931 va_list ap;
932 va_start(ap, format);
933 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
934 flags, format, ap);
935 va_end(ap);
936 return g;
937 }
938
939
940 /* Copy the content of a string to tainted memory */
941
942 static inline void
943 gstring_rebuffer(gstring * g)
944 {
945 uschar * s = store_get(g->size, TRUE);
946 memcpy(s, g->s, g->ptr);
947 g->s = s;
948 }
949
950
951 /******************************************************************************/
952
953 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
954
955 static inline dns_answer *
956 store_get_dns_answer_trc(const uschar * func, unsigned line)
957 {
958 return store_get_3(sizeof(dns_answer), TRUE, CCS func, line); /* use tainted mem */
959 }
960
961 /******************************************************************************/
962 /* Routines with knowledge of spool layout */
963
964 # ifndef COMPILE_UTILITY
965 static inline void
966 spool_pname_buf(uschar * buf, int len)
967 {
968 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
969 }
970
971 static inline uschar *
972 spool_dname(const uschar * purpose, uschar * subdir)
973 {
974 return string_sprintf("%s/%s/%s/%s",
975 spool_directory, queue_name, purpose, subdir);
976 }
977 # endif
978
979 static inline uschar *
980 spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
981 {
982 return string_sprintf("%s%s%s%s%s",
983 q, *q ? "/" : "",
984 purpose,
985 *subdir ? "/" : "", subdir);
986 }
987
988 static inline uschar *
989 spool_sname(const uschar * purpose, uschar * subdir)
990 {
991 return spool_q_sname(purpose, queue_name, subdir);
992 }
993
994 static inline uschar *
995 spool_q_fname(const uschar * purpose, const uschar * q,
996 const uschar * subdir, const uschar * fname, const uschar * suffix)
997 {
998 return string_sprintf("%s/%s/%s/%s/%s%s",
999 spool_directory, q, purpose, subdir, fname, suffix);
1000 }
1001
1002 static inline uschar *
1003 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1004 const uschar * suffix)
1005 {
1006 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1007 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1008 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1009 uschar * buf = store_get(len, FALSE);
1010 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1011 spool_directory, queue_name, purpose, subdir, fname, suffix);
1012 return buf;
1013 #else
1014 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1015 #endif
1016 }
1017
1018 static inline void
1019 set_subdir_str(uschar * subdir_str, const uschar * name,
1020 int search_sequence)
1021 {
1022 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1023 ? name[5] : '\0';
1024 subdir_str[1] = '\0';
1025 }
1026
1027 /******************************************************************************/
1028 /* Time calculations */
1029
1030 static inline void
1031 timesince(struct timeval * diff, const struct timeval * then)
1032 {
1033 gettimeofday(diff, NULL);
1034 diff->tv_sec -= then->tv_sec;
1035 if ((diff->tv_usec -= then->tv_usec) < 0)
1036 {
1037 diff->tv_sec--;
1038 diff->tv_usec += 1000*1000;
1039 }
1040 }
1041
1042 static inline uschar *
1043 string_timediff(const struct timeval * diff)
1044 {
1045 static uschar buf[sizeof("0.000s")];
1046
1047 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1048 return readconf_printtime((int)diff->tv_sec);
1049
1050 snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1051 return buf;
1052 }
1053
1054
1055 static inline uschar *
1056 string_timesince(const struct timeval * then)
1057 {
1058 struct timeval diff;
1059 timesince(&diff, then);
1060 return string_timediff(&diff);
1061 }
1062
1063 static inline void
1064 report_time_since(const struct timeval * t0, const uschar * where)
1065 {
1066 # ifdef MEASURE_TIMING
1067 struct timeval diff;
1068 timesince(&diff, t0);
1069 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1070 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1071 # endif
1072 }
1073
1074
1075 static inline void
1076 testharness_pause_ms(int millisec)
1077 {
1078 #ifndef MEASURE_TIMING
1079 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1080 #endif
1081 }
1082
1083 /******************************************************************************/
1084 /* Taint-checked file opens */
1085
1086 static inline int
1087 exim_open2(const char *pathname, int flags)
1088 {
1089 if (!is_tainted(pathname)) return open(pathname, flags);
1090 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1091 errno = EACCES;
1092 return -1;
1093 }
1094 static inline int
1095 exim_open(const char *pathname, int flags, mode_t mode)
1096 {
1097 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1098 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1099 errno = EACCES;
1100 return -1;
1101 }
1102 static inline int
1103 exim_openat(int dirfd, const char *pathname, int flags)
1104 {
1105 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1106 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1107 errno = EACCES;
1108 return -1;
1109 }
1110 static inline int
1111 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1112 {
1113 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1114 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1115 errno = EACCES;
1116 return -1;
1117 }
1118
1119 static inline FILE *
1120 exim_fopen(const char *pathname, const char *mode)
1121 {
1122 if (!is_tainted(pathname)) return fopen(pathname, mode);
1123 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1124 errno = EACCES;
1125 return NULL;
1126 }
1127
1128 static inline DIR *
1129 exim_opendir(const uschar * name)
1130 {
1131 if (!is_tainted(name)) return opendir(CCS name);
1132 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1133 errno = EACCES;
1134 return NULL;
1135 }
1136
1137 /******************************************************************************/
1138 # if !defined(COMPILE_UTILITY)
1139 /* Process manipulation */
1140
1141 static inline pid_t
1142 exim_fork(const unsigned char * purpose)
1143 {
1144 pid_t pid;
1145 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1146 if ((pid = fork()) == 0)
1147 {
1148 process_purpose = purpose;
1149 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1150 }
1151 else
1152 {
1153 testharness_pause_ms(100); /* let child work */
1154 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1155 }
1156 return pid;
1157 }
1158
1159
1160 static inline pid_t
1161 child_open_exim(int * fdptr, const uschar * purpose)
1162 { return child_open_exim_function(fdptr, purpose); }
1163
1164 static inline pid_t
1165 child_open_exim2(int * fdptr, uschar * sender,
1166 uschar * sender_auth, const uschar * purpose)
1167 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1168
1169 static inline pid_t
1170 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1171 int *outfdptr, BOOL make_leader, const uschar * purpose)
1172 { return child_open_function(argv, envp, newumask, infdptr,
1173 outfdptr, make_leader, purpose);
1174 }
1175
1176 # endif /* !COMPILE_UTILITY */
1177
1178 /******************************************************************************/
1179 #endif /* !MACRO_PREDEF */
1180
1181 #endif /* _FUNCTIONS_H_ */
1182
1183 /* vi: aw
1184 */
1185 /* End of functions.h */