bb81655c27fbadf6706d12b1bc625b61d23ffe85
[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 /* See the file NOTICE for conditions of use and distribution. */
7
8
9 /* Prototypes for functions that appear in various modules. Gathered together
10 to avoid having a lot of tiddly little headers with only a couple of lines in
11 them. However, some functions that are used (or not used) by utility programs
12 are in in fact in separate headers. */
13 #ifndef _FUNCTIONS_H_
14 #define _FUNCTIONS_H_
15
16 #include <ctype.h>
17 #include <sys/time.h>
18
19
20 #ifdef EXIM_PERL
21 extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
22 uschar **) WARN_UNUSED_RESULT;
23 extern void cleanup_perl(void);
24 extern uschar *init_perl(uschar *);
25 #endif
26
27
28 #ifndef DISABLE_TLS
29 extern const char *
30 std_dh_prime_default(void);
31 extern const char *
32 std_dh_prime_named(const uschar *);
33
34 extern uschar * tls_cert_crl_uri(void *, uschar * mod);
35 extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
36 extern uschar * tls_cert_issuer(void *, uschar * mod);
37 extern uschar * tls_cert_not_before(void *, uschar * mod);
38 extern uschar * tls_cert_not_after(void *, uschar * mod);
39 extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
40 extern uschar * tls_cert_serial_number(void *, uschar * mod);
41 extern uschar * tls_cert_signature(void *, uschar * mod);
42 extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
43 extern uschar * tls_cert_subject(void *, uschar * mod);
44 extern uschar * tls_cert_subject_altname(void *, uschar * mod);
45 extern uschar * tls_cert_version(void *, uschar * mod);
46
47 extern uschar * tls_cert_der_b64(void * cert);
48 extern uschar * tls_cert_fprt_md5(void *);
49 extern uschar * tls_cert_fprt_sha1(void *);
50 extern uschar * tls_cert_fprt_sha256(void *);
51
52 extern void tls_clean_env(void);
53 extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
54 void *, tls_support *, uschar **);
55
56 extern void tls_close(void *, int);
57 extern BOOL tls_could_read(void);
58 extern void tls_daemon_init(void);
59 extern BOOL tls_dropprivs_validate_require_cipher(BOOL);
60 extern BOOL tls_export_cert(uschar *, size_t, void *);
61 extern int tls_feof(void);
62 extern int tls_ferror(void);
63 extern void tls_free_cert(void **);
64 extern int tls_getc(unsigned);
65 extern uschar *tls_getbuf(unsigned *);
66 extern void tls_get_cache(void);
67 extern BOOL tls_import_cert(const uschar *, void **);
68 extern int tls_read(void *, uschar *, size_t);
69 extern int tls_server_start(const uschar *, uschar **);
70 extern BOOL tls_smtp_buffered(void);
71 extern int tls_ungetc(int);
72 extern int tls_write(void *, const uschar *, size_t, BOOL);
73 extern uschar *tls_validate_require_cipher(void);
74 extern void tls_version_report(FILE *);
75 # ifdef USE_OPENSSL
76 extern BOOL tls_openssl_options_parse(uschar *, long *);
77 # endif
78 extern uschar * tls_field_from_dn(uschar *, const uschar *);
79 extern BOOL tls_is_name_for_cert(const uschar *, void *);
80
81 # ifdef SUPPORT_DANE
82 extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
83 # endif
84
85 #endif /*DISABLE_TLS*/
86
87
88 /* Everything else... */
89
90 extern acl_block *acl_read(uschar *(*)(void), uschar **);
91 extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
92 extern int acl_eval(int, uschar *, uschar **, uschar **);
93
94 extern tree_node *acl_var_create(uschar *);
95 extern void acl_var_write(uschar *, uschar *, void *);
96
97 #ifdef EXPERIMENTAL_ARC
98 extern void *arc_ams_setup_sign_bodyhash(void);
99 extern const uschar *arc_header_feed(gstring *, BOOL);
100 extern gstring *arc_sign(const uschar *, gstring *, uschar **);
101 extern void arc_sign_init(void);
102 extern const uschar *acl_verify_arc(void);
103 extern uschar * fn_arc_domains(void);
104 #endif
105
106 extern void assert_no_variables(void *, int, const char *, int);
107 extern int auth_call_pam(const uschar *, uschar **);
108 extern int auth_call_pwcheck(uschar *, uschar **);
109 extern int auth_call_radius(const uschar *, uschar **);
110 extern int auth_call_saslauthd(const uschar *, const uschar *,
111 const uschar *, const uschar *, uschar **);
112 extern int auth_check_serv_cond(auth_instance *);
113 extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
114 extern int auth_client_item(void *, auth_instance *, const uschar **,
115 unsigned, int, uschar *, int);
116
117
118 extern int auth_get_data(uschar **, const uschar *, int);
119 extern int auth_get_no64_data(uschar **, uschar *);
120 extern int auth_prompt(const uschar *);
121 extern int auth_read_input(const uschar *);
122 extern gstring * auth_show_supported(gstring *);
123 extern uschar *auth_xtextencode(uschar *, int);
124 extern int auth_xtextdecode(uschar *, uschar **);
125
126 #ifdef EXPERIMENTAL_ARC
127 extern gstring *authres_arc(gstring *);
128 #endif
129 #ifndef DISABLE_DKIM
130 extern gstring *authres_dkim(gstring *);
131 #endif
132 #ifdef SUPPORT_DMARC
133 extern gstring *authres_dmarc(gstring *);
134 #endif
135 extern gstring *authres_smtpauth(gstring *);
136 #ifdef SUPPORT_SPF
137 extern gstring *authres_spf(gstring *);
138 #endif
139
140 extern uschar *b64encode(const uschar *, int);
141 extern uschar *b64encode_taint(const uschar *, int, BOOL);
142 extern int b64decode(const uschar *, uschar **);
143 extern int bdat_getc(unsigned);
144 extern uschar *bdat_getbuf(unsigned *);
145 extern int bdat_ungetc(int);
146 extern void bdat_flush_data(void);
147
148 extern void bits_clear(unsigned int *, size_t, int *);
149 extern void bits_set(unsigned int *, size_t, int *);
150
151 extern void cancel_cutthrough_connection(BOOL, const uschar *);
152 extern gstring *cat_file(FILE *, gstring *, uschar *);
153 extern gstring *cat_file_tls(void *, gstring *, uschar *);
154 extern int check_host(void *, const uschar *, const uschar **, uschar **);
155 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
156 extern pid_t child_open_exim_function(int *, const uschar *);
157 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
158 const uschar *);
159 extern pid_t child_open_function(uschar **, uschar **, int,
160 int *, int *, BOOL, const uschar *);
161 extern pid_t child_open_uid(const uschar **, const uschar **, int,
162 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
163 extern BOOL cleanup_environment(void);
164 extern void cutthrough_data_puts(uschar *, int);
165 extern void cutthrough_data_put_nl(void);
166 extern uschar *cutthrough_finaldot(void);
167 extern BOOL cutthrough_flush_send(void);
168 extern BOOL cutthrough_headers_send(void);
169 extern BOOL cutthrough_predata(void);
170 extern void release_cutthrough_connection(const uschar *);
171
172 extern void daemon_go(void);
173
174 #ifdef EXPERIMENTAL_DCC
175 extern int dcc_process(uschar **);
176 #endif
177
178 extern void debug_logging_activate(uschar *, uschar *);
179 extern void debug_logging_stop(void);
180 extern void debug_print_argv(const uschar **);
181 extern void debug_print_ids(uschar *);
182 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
183 extern void debug_print_string(uschar *);
184 extern void debug_print_tree(tree_node *);
185 extern void debug_vprintf(int, const char *, va_list);
186 extern void decode_bits(unsigned int *, size_t, int *,
187 uschar *, bit_table *, int, uschar *, int);
188 extern void delete_pid_file(void);
189 extern address_item *deliver_make_addr(uschar *, BOOL);
190 extern void delivery_log(int, address_item *, int, uschar *);
191 extern int deliver_message(uschar *, BOOL, BOOL);
192 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
193 extern void deliver_set_expansions(address_item *);
194 extern int deliver_split_address(address_item *);
195 extern void deliver_succeeded(address_item *);
196
197 extern uschar *deliver_get_sender_address (uschar *id);
198 extern void delivery_re_exec(int);
199
200 extern void die_tainted(const uschar *, const uschar *, int);
201 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
202 #ifndef DISABLE_DKIM
203 extern uschar *dkim_exim_query_dns_txt(const uschar *);
204 extern void dkim_exim_sign_init(void);
205
206 extern BOOL dkim_transport_write_message(transport_ctx *,
207 struct ob_dkim *, const uschar ** errstr);
208 #endif
209 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
210 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
211 extern uschar *dns_build_reverse(const uschar *);
212 extern time_t dns_expire_from_soa(dns_answer *, int);
213 extern void dns_init(BOOL, BOOL, BOOL);
214 extern BOOL dns_is_aa(const dns_answer *);
215 extern BOOL dns_is_secure(const dns_answer *);
216 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
217 extern void dns_pattern_init(void);
218 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
219 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
220 extern uschar *dns_text_type(int);
221 extern void dscp_list_to_stream(FILE *);
222 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
223
224 extern void enq_end(uschar *);
225 extern BOOL enq_start(uschar *, unsigned);
226 #ifndef DISABLE_EVENT
227 extern uschar *event_raise(uschar *, const uschar *, uschar *);
228 extern void msg_event_raise(const uschar *, const address_item *);
229 #endif
230
231 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
232 extern const uschar * exim_errstr(int);
233 extern void exim_exit(int) NORETURN;
234 extern void exim_nullstd(void);
235 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
236 extern void exim_underbar_exit(int) NORETURN;
237 extern void exim_wait_tick(struct timeval *, int);
238 extern int exp_bool(address_item *addr,
239 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
240 uschar *svalue, BOOL *rvalue);
241 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
242 extern uschar *expand_file_big_buffer(const uschar *);
243 extern uschar *expand_string(uschar *); /* public, cannot make const */
244 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
245 extern uschar *expand_getkeyed(const uschar *, const uschar *);
246
247 extern uschar *expand_hide_passwords(uschar * );
248 extern uschar *expand_string_copy(const uschar *);
249 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
250 extern void modify_variable(uschar *, void *);
251
252 extern BOOL fd_ready(int, time_t);
253
254 extern int filter_interpret(uschar *, int, address_item **, uschar **);
255 extern BOOL filter_personal(string_item *, BOOL);
256 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
257 extern BOOL filter_system_interpret(address_item **, uschar **);
258
259 extern uschar * fn_hdrs_added(void);
260
261 extern void header_add(int, const char *, ...);
262 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
263 extern int header_checkname(header_line *, BOOL);
264 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
265 extern int host_address_extract_port(uschar *);
266 extern uschar *host_and_ident(BOOL);
267 extern int host_aton(const uschar *, int *);
268 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
269 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
270 extern void host_build_log_info(void);
271 extern void host_build_sender_fullhost(void);
272 extern int host_find_byname(host_item *, const uschar *, int,
273 const uschar **, BOOL);
274 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
275 uschar *, const dnssec_domains *, const uschar **, BOOL *);
276 extern ip_address_item *host_find_interfaces(void);
277 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
278 extern BOOL host_is_tls_on_connect_port(int);
279 extern int host_item_get_port(host_item *);
280 extern void host_mask(int, int *, int);
281 extern int host_name_lookup(void);
282 extern int host_nmtoa(int, int *, int, uschar *, int);
283 extern uschar *host_ntoa(int, const void *, uschar *, int *);
284 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
285
286 extern uschar *imap_utf7_encode(uschar *, const uschar *,
287 uschar, uschar *, uschar **);
288
289 extern void invert_address(uschar *, uschar *);
290 extern int ip_addr(void *, int, const uschar *, int);
291 extern int ip_bind(int, int, uschar *, int);
292 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
293 extern int ip_connectedsocket(int, const uschar *, int, int,
294 int, host_item *, uschar **, const blob *);
295 extern int ip_get_address_family(int);
296 extern void ip_keepalive(int, const uschar *, BOOL);
297 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
298 extern int ip_socket(int, int);
299
300 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
301 extern int ip_unixsocket(const uschar *, uschar **);
302 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
303
304 extern int ipv6_nmtoa(int *, uschar *);
305
306 extern uschar *local_part_quote(uschar *);
307 extern int log_create(uschar *);
308 extern int log_create_as_exim(uschar *);
309 extern void log_close_all(void);
310
311 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
312 extern BOOL macro_read_assignment(uschar *);
313 extern uschar *macros_expand(int, int *, BOOL *);
314 extern void mainlog_close(void);
315 #ifdef WITH_CONTENT_SCAN
316 extern int malware(const uschar *, int);
317 extern int malware_in_file(uschar *);
318 extern void malware_init(void);
319 extern gstring * malware_show_supported(gstring *);
320 #endif
321 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
322 unsigned int *, int, int, const uschar **);
323 extern int match_address_list_basic(const uschar *, const uschar **, int);
324 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
325 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
326 const uschar *, const uschar **);
327 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
328 unsigned int *, int, BOOL, const uschar **);
329 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
330 const uschar **);
331 extern void md5_end(md5 *, const uschar *, int, uschar *);
332 extern void md5_mid(md5 *, const uschar *);
333 extern void md5_start(md5 *);
334 extern void millisleep(int);
335 #ifdef WITH_CONTENT_SCAN
336 struct mime_boundary_context;
337 extern int mime_acl_check(uschar *acl, FILE *f,
338 struct mime_boundary_context *, uschar **, uschar **);
339 extern int mime_decode(const uschar **);
340 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
341 extern int mime_regex(const uschar **);
342 extern void mime_set_anomaly(int);
343 #endif
344 extern uschar *moan_check_errorcopy(uschar *);
345 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
346 BOOL, uschar *);
347 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
348 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
349 header_line *, FILE *, uschar *);
350 extern void moan_tell_someone(uschar *, address_item *,
351 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
352 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
353 extern void moan_write_from(FILE *);
354 extern void moan_write_references(FILE *, uschar *);
355 extern FILE *modefopen(const uschar *, const char *, mode_t);
356
357 extern int open_cutthrough_connection( address_item * addr );
358
359 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
360 BOOL);
361 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
362 const uschar *, uschar *, error_block **);
363 extern uschar *parse_find_address_end(uschar *, BOOL);
364 extern uschar *parse_find_at(uschar *);
365 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
366 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
367 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
368 extern uschar *parse_date_time(uschar *str, time_t *t);
369 extern int vaguely_random_number(int);
370 #ifndef DISABLE_TLS
371 extern int vaguely_random_number_fallback(int);
372 #endif
373
374 extern BOOL queue_action(uschar *, int, uschar **, int, int);
375 extern void queue_check_only(void);
376 extern unsigned queue_count(void);
377 extern unsigned queue_count_cached(void);
378 extern void queue_list(int, uschar **, int);
379 #ifdef EXPERIMENTAL_QUEUE_RAMP
380 extern void queue_notify_daemon(const uschar * hostname);
381 #endif
382 extern void queue_run(uschar *, uschar *, BOOL);
383
384 extern int random_number(int);
385 extern const uschar *rc_to_string(int);
386 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
387 uschar *, uschar *, uschar *, ugid_block *, address_item **,
388 uschar **, error_block **, int *, uschar *);
389 extern int rda_is_filter(const uschar *);
390 extern BOOL readconf_depends(driver_instance *, uschar *);
391 extern void readconf_driver_init(uschar *, driver_instance **,
392 driver_info *, int, void *, int, optionlist *, int);
393 extern uschar *readconf_find_option(void *);
394 extern void readconf_main(BOOL);
395 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
396 extern BOOL readconf_print(uschar *, uschar *, BOOL);
397 extern uschar *readconf_printtime(int);
398 extern uschar *readconf_readname(uschar *, int, uschar *);
399 extern int readconf_readtime(const uschar *, int, BOOL);
400 extern void readconf_rest(void);
401 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
402 extern void readconf_save_config(const uschar *);
403 extern void read_message_body(BOOL);
404 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
405 extern BOOL receive_check_fs(int);
406 extern BOOL receive_check_set_sender(uschar *);
407 extern BOOL receive_msg(BOOL);
408 extern int_eximarith_t receive_statvfs(BOOL, int *);
409 extern void receive_swallow_smtp(void);
410 #ifdef WITH_CONTENT_SCAN
411 extern int regex(const uschar **);
412 #endif
413 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
414 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
415 extern void retry_add_item(address_item *, uschar *, int);
416 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
417 uschar **, uschar **);
418 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
419 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
420 dbdata_retry *, time_t);
421 extern void retry_update(address_item **, address_item **, address_item **);
422 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
423 extern uschar *rewrite_address_qualify(uschar *, BOOL);
424 extern header_line *rewrite_header(header_line *,
425 const uschar *, const uschar *,
426 rewrite_rule *, int, BOOL);
427 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
428 rewrite_rule *);
429 extern void rewrite_test(uschar *);
430 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
431 uschar **);
432 extern int route_address(address_item *, address_item **, address_item **,
433 address_item **, address_item **, int);
434 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
435 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
436 extern BOOL route_findgroup(uschar *, gid_t *);
437 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
438 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
439 uschar **);
440 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
441 struct passwd **, uid_t *, uschar **);
442 extern void route_init(void);
443 extern gstring * route_show_supported(gstring *);
444 extern void route_tidyup(void);
445
446 extern uschar *search_find(void *, const uschar *, uschar *, int,
447 const uschar *, int, int, int *, const uschar *);
448 extern int search_findtype(const uschar *, int);
449 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
450 int *, const uschar **);
451 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
452 extern void search_tidyup(void);
453 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
454 extern void sha1_end(hctx *, const uschar *, int, uschar *);
455 extern void sha1_mid(hctx *, const uschar *);
456 extern void sha1_start(hctx *);
457 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
458 uschar *, address_item **, uschar **);
459 extern void sigalrm_handler(int);
460 extern BOOL smtp_buffered(void);
461 extern void smtp_closedown(uschar *);
462 extern void smtp_command_timeout_exit(void) NORETURN;
463 extern void smtp_command_sigterm_exit(void) NORETURN;
464 extern void smtp_data_timeout_exit(void) NORETURN;
465 extern void smtp_data_sigint_exit(void) NORETURN;
466 extern void smtp_deliver_init(void);
467 extern uschar *smtp_cmd_hist(void);
468 extern int smtp_connect(smtp_connect_args *, const blob *);
469 extern int smtp_sock_connect(host_item *, int, int, uschar *,
470 transport_instance * tb, int, const blob *);
471 extern int smtp_feof(void);
472 extern int smtp_ferror(void);
473 extern uschar *smtp_get_connection_info(void);
474 extern BOOL smtp_get_interface(uschar *, int, address_item *,
475 uschar **, uschar *);
476 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
477 extern int smtp_getc(unsigned);
478 extern uschar *smtp_getbuf(unsigned *);
479 extern void smtp_get_cache(void);
480 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
481 extern void smtp_log_no_mail(void);
482 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
483 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
484 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
485 extern void *smtp_reset(void *);
486 extern void smtp_respond(uschar *, int, BOOL, uschar *);
487 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
488 extern void smtp_port_for_connect(host_item *, int);
489 extern void smtp_send_prohibition_message(int, uschar *);
490 extern int smtp_setup_msg(void);
491 extern BOOL smtp_start_session(void);
492 extern int smtp_ungetc(int);
493 extern BOOL smtp_verify_helo(void);
494 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
495 #ifdef WITH_CONTENT_SCAN
496 extern int spam(const uschar **);
497 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
498 #endif
499 extern void spool_clear_header_globals(void);
500 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
501 extern int spool_open_datafile(uschar *);
502 extern int spool_open_temp(uschar *);
503 extern int spool_read_header(uschar *, BOOL, BOOL);
504 extern int spool_write_header(uschar *, int, uschar **);
505 extern int stdin_getc(unsigned);
506 extern int stdin_feof(void);
507 extern int stdin_ferror(void);
508 extern int stdin_ungetc(int);
509
510 extern void store_exit(void);
511 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
512 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
513 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
514 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
515 extern uschar *string_base62(unsigned long int);
516 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
517 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
518 extern int string_compare_by_pointer(const void *, const void *);
519 extern uschar *string_copy_dnsdomain(uschar *);
520 extern uschar *string_copy_malloc(const uschar *);
521 extern uschar *string_dequote(const uschar **);
522 extern uschar *string_format_size(int, uschar *);
523 extern int string_interpret_escape(const uschar **);
524 extern int string_is_ip_address(const uschar *, int *);
525 #ifdef SUPPORT_I18N
526 extern BOOL string_is_utf8(const uschar *);
527 #endif
528 extern const uschar *string_printing2(const uschar *, BOOL);
529 extern uschar *string_split_message(uschar *);
530 extern uschar *string_unprinting(uschar *);
531 #ifdef SUPPORT_I18N
532 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
533 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
534 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
535 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
536 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
537 #endif
538
539 #define string_format(buf, siz, fmt, ...) \
540 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
541 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
542 const char *, ...) ALMOST_PRINTF(5,6);
543
544 #define string_vformat(g, flgs, fmt, ap) \
545 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
546 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
547 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
548 unsigned, unsigned, const char *, va_list);
549
550 #define string_open_failed(eno, fmt, ...) \
551 string_open_failed_trc(eno, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
552 extern uschar *string_open_failed_trc(int, const uschar *, unsigned,
553 const char *, ...) PRINTF_FUNCTION(4,5);
554
555 #define string_nextinlist(lp, sp, b, l) \
556 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
557 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
558 const uschar * func, int line);
559
560 extern int strcmpic(const uschar *, const uschar *);
561 extern int strncmpic(const uschar *, const uschar *, int);
562 extern uschar *strstric(uschar *, uschar *, BOOL);
563
564 extern int test_harness_fudged_queue_time(int);
565 extern void tcp_init(void);
566 #ifdef EXIM_TFO_PROBE
567 extern void tfo_probe(void);
568 #endif
569 extern void tls_modify_variables(tls_support *);
570 extern uschar *tod_stamp(int);
571
572 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
573 BOOL *, oicf, void*);
574 extern void transport_init(void);
575 extern void transport_do_pass_socket(const uschar *, const uschar *,
576 const uschar *, uschar *, int);
577 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
578 int);
579 extern uschar *transport_rcpt_address(address_item *, BOOL);
580 extern BOOL transport_set_up_command(const uschar ***, uschar *,
581 BOOL, int, address_item *, uschar *, uschar **);
582 extern void transport_update_waiting(host_item *, uschar *);
583 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
584 extern void transport_write_reset(int);
585 extern BOOL transport_write_string(int, const char *, ...);
586 extern BOOL transport_headers_send(transport_ctx *,
587 BOOL (*)(transport_ctx *, uschar *, int));
588 extern gstring * transport_show_supported(gstring *);
589 extern BOOL transport_write_message(transport_ctx *, int);
590 extern void tree_add_duplicate(uschar *, address_item *);
591 extern void tree_add_nonrecipient(uschar *);
592 extern void tree_add_unusable(host_item *);
593 extern void tree_dup(tree_node **, tree_node *);
594 extern int tree_insertnode(tree_node **, tree_node *);
595 extern tree_node *tree_search(tree_node *, const uschar *);
596 extern void tree_write(tree_node *, FILE *);
597 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
598
599 #ifdef WITH_CONTENT_SCAN
600 extern void unspool_mbox(void);
601 #endif
602 #ifdef SUPPORT_I18N
603 extern void utf8_version_report(FILE *);
604 #endif
605
606 extern int verify_address(address_item *, FILE *, int, int, int, int,
607 uschar *, uschar *, BOOL *);
608 extern int verify_check_dnsbl(int, const uschar **, uschar **);
609 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
610 uschar *, uschar *, int, int *);
611 extern int verify_check_headers(uschar **);
612 extern int verify_check_header_names_ascii(uschar **);
613 extern int verify_check_host(uschar **);
614 extern int verify_check_notblind(BOOL);
615 extern int verify_check_given_host(const uschar **, const host_item *);
616 extern int verify_check_this_host(const uschar **, unsigned int *,
617 const uschar*, const uschar *, const uschar **);
618 extern address_item *verify_checked_sender(uschar *);
619 extern void verify_get_ident(int);
620 extern BOOL verify_sender(int *, uschar **);
621 extern BOOL verify_sender_preliminary(int *, uschar **);
622 extern void version_init(void);
623
624 extern BOOL write_chunk(transport_ctx *, uschar *, int);
625 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
626
627
628 /******************************************************************************/
629 /* Predicate: if an address is in a tainted pool.
630 By extension, a variable pointing to this address is tainted.
631 */
632
633 static inline BOOL
634 is_tainted(const void * p)
635 {
636 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
637 return FALSE;
638
639 #else
640 extern BOOL is_tainted_fn(const void *);
641 return is_tainted_fn(p);
642 #endif
643 }
644
645 /******************************************************************************/
646 /* String functions */
647 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
648 {
649 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
650 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
651 #endif
652 return US strcat(CS dst, CCS src);
653 }
654 static inline uschar * __Ustrcpy(uschar * dst, const uschar * src, const char * func, int line)
655 {
656 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
657 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcpy", CUS func, line);
658 #endif
659 return US strcpy(CS dst, CCS src);
660 }
661 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, const char * func, int line)
662 {
663 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
664 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncat", CUS func, line);
665 #endif
666 return US strncat(CS dst, CCS src, n);
667 }
668 static inline uschar * __Ustrncpy(uschar * dst, const uschar * src, size_t n, const char * func, int line)
669 {
670 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
671 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrncpy", CUS func, line);
672 #endif
673 return US strncpy(CS dst, CCS src, n);
674 }
675 /*XXX will likely need unchecked copy also */
676
677
678 /* Advance the string pointer given over any whitespace.
679 Return the next char as there's enought places using it to be useful. */
680
681 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
682
683 static inline uschar skip_whitespace(const uschar ** sp)
684 { while (isspace(**sp)) (*sp)++; return **sp; }
685
686
687 /******************************************************************************/
688
689 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
690 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
691 chown(<exim-uid>, <exim-gid>).
692
693 Probably because the idmapping is broken, misconfigured or set up in
694 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
695 case of misconfiguration, or if there are more such broken systems
696 out, I try to impose as least impact as possible and for now just write
697 a panic log entry pointing to the bug report. You're encouraged to
698 contact the developers, if you experience this issue.
699
700 fd the file descriptor (or -1 if not valid)
701 name the file name for error messages or for file operations,
702 if fd is < 0
703 owner the owner
704 group the group
705
706 returns 0 on success, -1 on failure */
707
708 static inline int
709 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
710 {
711 return fchown(fd, owner, group)
712 ? exim_chown_failure(fd, name, owner, group) : 0;
713 }
714
715 static inline int
716 exim_chown(const uschar *name, uid_t owner, gid_t group)
717 {
718 return chown(CCS name, owner, group)
719 ? exim_chown_failure(-1, name, owner, group) : 0;
720 }
721 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
722
723 /******************************************************************************/
724 /* String functions */
725
726 #if !defined(MACRO_PREDEF)
727 /*************************************************
728 * Copy and save string *
729 *************************************************/
730
731 /* This function assumes that memcpy() is faster than strcpy().
732 The result is explicitly nul-terminated.
733 */
734
735 static inline uschar *
736 string_copyn_taint_trc(const uschar * s, unsigned len,
737 BOOL tainted, const char * func, int line)
738 {
739 uschar * ss = store_get_3(len + 1, tainted, func, line);
740 memcpy(ss, s, len);
741 ss[len] = '\0';
742 return ss;
743 }
744
745 static inline uschar *
746 string_copy_taint_trc(const uschar * s, BOOL tainted, const char * func, int line)
747 { return string_copyn_taint_trc(s, Ustrlen(s), tainted, func, line); }
748
749 static inline uschar *
750 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
751 { return string_copyn_taint_trc(s, len, is_tainted(s), func, line); }
752 static inline uschar *
753 string_copy_trc(const uschar * s, const char * func, int line)
754 { return string_copy_taint_trc(s, is_tainted(s), func, line); }
755
756
757 /* String-copy functions explicitly setting the taint status */
758
759 #define string_copyn_taint(s, len, tainted) \
760 string_copyn_taint_trc((s), (len), (tainted), __FUNCTION__, __LINE__)
761 #define string_copy_taint(s, tainted) \
762 string_copy_taint_trc((s), (tainted), __FUNCTION__, __LINE__)
763
764 /* Simple string-copy functions maintaining the taint */
765
766 #define string_copyn(s, len) \
767 string_copyn_taint_trc((s), (len), is_tainted(s), __FUNCTION__, __LINE__)
768 #define string_copy(s) \
769 string_copy_taint_trc((s), is_tainted(s), __FUNCTION__, __LINE__)
770
771
772 /*************************************************
773 * Copy, lowercase and save string *
774 *************************************************/
775
776 /*
777 Argument: string to copy
778 Returns: copy of string in new store, with letters lowercased
779 */
780
781 static inline uschar *
782 string_copylc(const uschar *s)
783 {
784 uschar *ss = store_get(Ustrlen(s) + 1, is_tainted(s));
785 uschar *p = ss;
786 while (*s != 0) *p++ = tolower(*s++);
787 *p = 0;
788 return ss;
789 }
790
791
792
793 /*************************************************
794 * Copy, lowercase, and save string, given length *
795 *************************************************/
796
797 /* It is assumed the data contains no zeros. A zero is added
798 onto the end.
799
800 Arguments:
801 s string to copy
802 n number of characters
803
804 Returns: copy of string in new store, with letters lowercased
805 */
806
807 static inline uschar *
808 string_copynlc(uschar *s, int n)
809 {
810 uschar *ss = store_get(n + 1, is_tainted(s));
811 uschar *p = ss;
812 while (n-- > 0) *p++ = tolower(*s++);
813 *p = 0;
814 return ss;
815 }
816
817
818 # ifndef COMPILE_UTILITY
819 /*************************************************
820 * Copy and save string in longterm store *
821 *************************************************/
822
823 /* This function assumes that memcpy() is faster than strcpy().
824
825 Argument: string to copy
826 Returns: copy of string in new store
827 */
828
829 static inline uschar *
830 string_copy_perm(const uschar *s, BOOL force_taint)
831 {
832 int old_pool = store_pool;
833 int len = Ustrlen(s) + 1;
834 uschar *ss;
835
836 store_pool = POOL_PERM;
837 ss = store_get(len, force_taint || is_tainted(s));
838 memcpy(ss, s, len);
839 store_pool = old_pool;
840 return ss;
841 }
842 # endif
843
844
845
846 /* sprintf into a buffer, taint-unchecked */
847
848 static inline void
849 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
850 {
851 gstring gs = { .size = siz, .ptr = 0, .s = buf };
852 va_list ap;
853 va_start(ap, fmt);
854 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
855 va_end(ap);
856 }
857
858
859
860 /******************************************************************************/
861 /* Growable-string functions */
862
863 /* Create a growable-string with some preassigned space */
864
865 #define string_get_tainted(size, tainted) \
866 string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
867
868 static inline gstring *
869 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
870 {
871 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
872 g->size = size;
873 g->ptr = 0;
874 g->s = US(g + 1);
875 return g;
876 }
877
878 #define string_get(size) \
879 string_get_trc((size), __FUNCTION__, __LINE__)
880
881 static inline gstring *
882 string_get_trc(unsigned size, const char * func, unsigned line)
883 {
884 return string_get_tainted_trc(size, FALSE, func, line);
885 }
886
887 /* NUL-terminate the C string in the growable-string, and return it. */
888
889 static inline uschar *
890 string_from_gstring(gstring * g)
891 {
892 if (!g) return NULL;
893 g->s[g->ptr] = '\0';
894 return g->s;
895 }
896
897 static inline unsigned
898 gstring_length(const gstring * g)
899 {
900 return g ? (unsigned)g->ptr : 0;
901 }
902
903
904 #define gstring_release_unused(g) \
905 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
906
907 static inline void
908 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
909 {
910 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
911 }
912
913
914 /* sprintf-append to a growable-string */
915
916 #define string_fmt_append(g, fmt, ...) \
917 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
918 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
919
920 #define string_fmt_append_f(g, flgs, fmt, ...) \
921 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
922 flgs, fmt, __VA_ARGS__)
923
924 static inline gstring *
925 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
926 unsigned flags, const char *format, ...)
927 {
928 va_list ap;
929 va_start(ap, format);
930 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
931 flags, format, ap);
932 va_end(ap);
933 return g;
934 }
935
936
937 /* Copy the content of a string to tainted memory */
938
939 static inline void
940 gstring_rebuffer(gstring * g)
941 {
942 uschar * s = store_get(g->size, TRUE);
943 memcpy(s, g->s, g->ptr);
944 g->s = s;
945 }
946
947
948 /******************************************************************************/
949
950 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
951
952 static inline dns_answer *
953 store_get_dns_answer_trc(const uschar * func, unsigned line)
954 {
955 return store_get_3(sizeof(dns_answer), TRUE, CCS func, line); /* use tainted mem */
956 }
957
958 /******************************************************************************/
959 /* Routines with knowledge of spool layout */
960
961 # ifndef COMPILE_UTILITY
962 static inline void
963 spool_pname_buf(uschar * buf, int len)
964 {
965 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
966 }
967
968 static inline uschar *
969 spool_dname(const uschar * purpose, uschar * subdir)
970 {
971 return string_sprintf("%s/%s/%s/%s",
972 spool_directory, queue_name, purpose, subdir);
973 }
974 # endif
975
976 static inline uschar *
977 spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
978 {
979 return string_sprintf("%s%s%s%s%s",
980 q, *q ? "/" : "",
981 purpose,
982 *subdir ? "/" : "", subdir);
983 }
984
985 static inline uschar *
986 spool_sname(const uschar * purpose, uschar * subdir)
987 {
988 return spool_q_sname(purpose, queue_name, subdir);
989 }
990
991 static inline uschar *
992 spool_q_fname(const uschar * purpose, const uschar * q,
993 const uschar * subdir, const uschar * fname, const uschar * suffix)
994 {
995 return string_sprintf("%s/%s/%s/%s/%s%s",
996 spool_directory, q, purpose, subdir, fname, suffix);
997 }
998
999 static inline uschar *
1000 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
1001 const uschar * suffix)
1002 {
1003 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1004 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1005 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1006 uschar * buf = store_get(len, FALSE);
1007 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1008 spool_directory, queue_name, purpose, subdir, fname, suffix);
1009 return buf;
1010 #else
1011 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1012 #endif
1013 }
1014
1015 static inline void
1016 set_subdir_str(uschar * subdir_str, const uschar * name,
1017 int search_sequence)
1018 {
1019 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1020 ? name[5] : '\0';
1021 subdir_str[1] = '\0';
1022 }
1023
1024 /******************************************************************************/
1025 /* Time calculations */
1026
1027 static inline void
1028 timesince(struct timeval * diff, const struct timeval * then)
1029 {
1030 gettimeofday(diff, NULL);
1031 diff->tv_sec -= then->tv_sec;
1032 if ((diff->tv_usec -= then->tv_usec) < 0)
1033 {
1034 diff->tv_sec--;
1035 diff->tv_usec += 1000*1000;
1036 }
1037 }
1038
1039 static inline uschar *
1040 string_timediff(const struct timeval * diff)
1041 {
1042 static uschar buf[sizeof("0.000s")];
1043
1044 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1045 return readconf_printtime((int)diff->tv_sec);
1046
1047 snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1048 return buf;
1049 }
1050
1051
1052 static inline uschar *
1053 string_timesince(const struct timeval * then)
1054 {
1055 struct timeval diff;
1056 timesince(&diff, then);
1057 return string_timediff(&diff);
1058 }
1059
1060 static inline void
1061 report_time_since(const struct timeval * t0, const uschar * where)
1062 {
1063 # ifdef MEASURE_TIMING
1064 struct timeval diff;
1065 timesince(&diff, t0);
1066 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1067 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1068 # endif
1069 }
1070
1071
1072 static inline void
1073 testharness_pause_ms(int millisec)
1074 {
1075 #ifndef MEASURE_TIMING
1076 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1077 #endif
1078 }
1079
1080 /******************************************************************************/
1081 /* Taint-checked file opens */
1082
1083 static inline int
1084 exim_open2(const char *pathname, int flags)
1085 {
1086 if (!is_tainted(pathname)) return open(pathname, flags);
1087 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1088 errno = EACCES;
1089 return -1;
1090 }
1091 static inline int
1092 exim_open(const char *pathname, int flags, mode_t mode)
1093 {
1094 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1095 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1096 errno = EACCES;
1097 return -1;
1098 }
1099 static inline int
1100 exim_openat(int dirfd, const char *pathname, int flags)
1101 {
1102 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1103 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1104 errno = EACCES;
1105 return -1;
1106 }
1107 static inline int
1108 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1109 {
1110 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1111 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1112 errno = EACCES;
1113 return -1;
1114 }
1115
1116 static inline FILE *
1117 exim_fopen(const char *pathname, const char *mode)
1118 {
1119 if (!is_tainted(pathname)) return fopen(pathname, mode);
1120 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1121 errno = EACCES;
1122 return NULL;
1123 }
1124
1125 static inline DIR *
1126 exim_opendir(const uschar * name)
1127 {
1128 if (!is_tainted(name)) return opendir(CCS name);
1129 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1130 errno = EACCES;
1131 return NULL;
1132 }
1133
1134 /******************************************************************************/
1135 # if !defined(COMPILE_UTILITY)
1136 /* Process manipulation */
1137
1138 static inline pid_t
1139 exim_fork(const unsigned char * purpose)
1140 {
1141 pid_t pid;
1142 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1143 if ((pid = fork()) == 0)
1144 {
1145 process_purpose = purpose;
1146 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1147 }
1148 else
1149 {
1150 testharness_pause_ms(100); /* let child work */
1151 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1152 }
1153 return pid;
1154 }
1155
1156
1157 static inline pid_t
1158 child_open_exim(int * fdptr, const uschar * purpose)
1159 { return child_open_exim_function(fdptr, purpose); }
1160
1161 static inline pid_t
1162 child_open_exim2(int * fdptr, uschar * sender,
1163 uschar * sender_auth, const uschar * purpose)
1164 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1165
1166 static inline pid_t
1167 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1168 int *outfdptr, BOOL make_leader, const uschar * purpose)
1169 { return child_open_function(argv, envp, newumask, infdptr,
1170 outfdptr, make_leader, purpose);
1171 }
1172
1173 # endif /* !COMPILE_UTILITY */
1174
1175 /******************************************************************************/
1176 #endif /* !MACRO_PREDEF */
1177
1178 #endif /* _FUNCTIONS_H_ */
1179
1180 /* vi: aw
1181 */
1182 /* End of functions.h */