8206c480e397950ac448682058bb2abcbaad1596
[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 int check_host(void *, const uschar *, const uschar **, uschar **);
153 extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
154 extern pid_t child_open_exim_function(int *, const uschar *);
155 extern pid_t child_open_exim2_function(int *, uschar *, uschar *,
156 const uschar *);
157 extern pid_t child_open_function(uschar **, uschar **, int,
158 int *, int *, BOOL, const uschar *);
159 extern pid_t child_open_uid(const uschar **, const uschar **, int,
160 uid_t *, gid_t *, int *, int *, uschar *, BOOL, const uschar *);
161 extern BOOL cleanup_environment(void);
162 extern void cutthrough_data_puts(uschar *, int);
163 extern void cutthrough_data_put_nl(void);
164 extern uschar *cutthrough_finaldot(void);
165 extern BOOL cutthrough_flush_send(void);
166 extern BOOL cutthrough_headers_send(void);
167 extern BOOL cutthrough_predata(void);
168 extern void release_cutthrough_connection(const uschar *);
169
170 extern void daemon_go(void);
171
172 #ifdef EXPERIMENTAL_DCC
173 extern int dcc_process(uschar **);
174 #endif
175
176 extern void debug_logging_activate(uschar *, uschar *);
177 extern void debug_logging_stop(void);
178 extern void debug_print_argv(const uschar **);
179 extern void debug_print_ids(uschar *);
180 extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
181 extern void debug_print_string(uschar *);
182 extern void debug_print_tree(tree_node *);
183 extern void debug_vprintf(int, const char *, va_list);
184 extern void decode_bits(unsigned int *, size_t, int *,
185 uschar *, bit_table *, int, uschar *, int);
186 extern void delete_pid_file(void);
187 extern address_item *deliver_make_addr(uschar *, BOOL);
188 extern void delivery_log(int, address_item *, int, uschar *);
189 extern int deliver_message(uschar *, BOOL, BOOL);
190 extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
191 extern void deliver_set_expansions(address_item *);
192 extern int deliver_split_address(address_item *);
193 extern void deliver_succeeded(address_item *);
194
195 extern uschar *deliver_get_sender_address (uschar *id);
196 extern void delivery_re_exec(int);
197
198 extern void die_tainted(const uschar *, const uschar *, int);
199 extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
200 #ifndef DISABLE_DKIM
201 extern uschar *dkim_exim_query_dns_txt(const uschar *);
202 extern void dkim_exim_sign_init(void);
203
204 extern BOOL dkim_transport_write_message(transport_ctx *,
205 struct ob_dkim *, const uschar ** errstr);
206 #endif
207 extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
208 extern int dns_basic_lookup(dns_answer *, const uschar *, int);
209 extern uschar *dns_build_reverse(const uschar *);
210 extern time_t dns_expire_from_soa(dns_answer *, int);
211 extern void dns_init(BOOL, BOOL, BOOL);
212 extern BOOL dns_is_aa(const dns_answer *);
213 extern BOOL dns_is_secure(const dns_answer *);
214 extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
215 extern void dns_pattern_init(void);
216 extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
217 extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
218 extern uschar *dns_text_type(int);
219 extern void dscp_list_to_stream(FILE *);
220 extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
221
222 extern void enq_end(uschar *);
223 extern BOOL enq_start(uschar *, unsigned);
224 #ifndef DISABLE_EVENT
225 extern uschar *event_raise(uschar *, const uschar *, uschar *);
226 extern void msg_event_raise(const uschar *, const address_item *);
227 #endif
228
229 extern int exim_chown_failure(int, const uschar*, uid_t, gid_t);
230 extern const uschar * exim_errstr(int);
231 extern void exim_exit(int) NORETURN;
232 extern void exim_nullstd(void);
233 extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
234 extern void exim_underbar_exit(int) NORETURN;
235 extern void exim_wait_tick(struct timeval *, int);
236 extern int exp_bool(address_item *addr,
237 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
238 uschar *svalue, BOOL *rvalue);
239 extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
240 extern uschar *expand_file_big_buffer(const uschar *);
241 extern uschar *expand_string(uschar *); /* public, cannot make const */
242 extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
243 extern uschar *expand_hide_passwords(uschar * );
244 extern uschar *expand_string_copy(const uschar *);
245 extern int_eximarith_t expand_string_integer(uschar *, BOOL);
246 extern void modify_variable(uschar *, void *);
247
248 extern BOOL fd_ready(int, time_t);
249
250 extern int filter_interpret(uschar *, int, address_item **, uschar **);
251 extern BOOL filter_personal(string_item *, BOOL);
252 extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
253 extern BOOL filter_system_interpret(address_item **, uschar **);
254
255 extern uschar * fn_hdrs_added(void);
256
257 extern void header_add(int, const char *, ...);
258 extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
259 extern int header_checkname(header_line *, BOOL);
260 extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
261 extern int host_address_extract_port(uschar *);
262 extern uschar *host_and_ident(BOOL);
263 extern int host_aton(const uschar *, int *);
264 extern void host_build_hostlist(host_item **, const uschar *, BOOL);
265 extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
266 extern void host_build_log_info(void);
267 extern void host_build_sender_fullhost(void);
268 extern int host_find_byname(host_item *, const uschar *, int,
269 const uschar **, BOOL);
270 extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
271 uschar *, const dnssec_domains *, const uschar **, BOOL *);
272 extern ip_address_item *host_find_interfaces(void);
273 extern BOOL host_is_in_net(const uschar *, const uschar *, int);
274 extern BOOL host_is_tls_on_connect_port(int);
275 extern int host_item_get_port(host_item *);
276 extern void host_mask(int, int *, int);
277 extern int host_name_lookup(void);
278 extern int host_nmtoa(int, int *, int, uschar *, int);
279 extern uschar *host_ntoa(int, const void *, uschar *, int *);
280 extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
281
282 extern uschar *imap_utf7_encode(uschar *, const uschar *,
283 uschar, uschar *, uschar **);
284
285 extern void invert_address(uschar *, uschar *);
286 extern int ip_addr(void *, int, const uschar *, int);
287 extern int ip_bind(int, int, uschar *, int);
288 extern int ip_connect(int, int, const uschar *, int, int, const blob *);
289 extern int ip_connectedsocket(int, const uschar *, int, int,
290 int, host_item *, uschar **, const blob *);
291 extern int ip_get_address_family(int);
292 extern void ip_keepalive(int, const uschar *, BOOL);
293 extern int ip_recv(client_conn_ctx *, uschar *, int, time_t);
294 extern int ip_socket(int, int);
295
296 extern int ip_tcpsocket(const uschar *, uschar **, int, host_item *);
297 extern int ip_unixsocket(const uschar *, uschar **);
298 extern int ip_streamsocket(const uschar *, uschar **, int, host_item *);
299
300 extern int ipv6_nmtoa(int *, uschar *);
301
302 extern uschar *local_part_quote(uschar *);
303 extern int log_create(uschar *);
304 extern int log_create_as_exim(uschar *);
305 extern void log_close_all(void);
306
307 extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
308 extern BOOL macro_read_assignment(uschar *);
309 extern uschar *macros_expand(int, int *, BOOL *);
310 extern void mainlog_close(void);
311 #ifdef WITH_CONTENT_SCAN
312 extern int malware(const uschar *, int);
313 extern int malware_in_file(uschar *);
314 extern void malware_init(void);
315 extern gstring * malware_show_supported(gstring *);
316 #endif
317 extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
318 unsigned int *, int, int, const uschar **);
319 extern int match_address_list_basic(const uschar *, const uschar **, int);
320 extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
321 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
322 const uschar *, const uschar **);
323 extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
324 unsigned int *, int, BOOL, const uschar **);
325 extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
326 const uschar **);
327 extern void md5_end(md5 *, const uschar *, int, uschar *);
328 extern void md5_mid(md5 *, const uschar *);
329 extern void md5_start(md5 *);
330 extern void millisleep(int);
331 #ifdef WITH_CONTENT_SCAN
332 struct mime_boundary_context;
333 extern int mime_acl_check(uschar *acl, FILE *f,
334 struct mime_boundary_context *, uschar **, uschar **);
335 extern int mime_decode(const uschar **);
336 extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
337 extern int mime_regex(const uschar **);
338 extern void mime_set_anomaly(int);
339 #endif
340 extern uschar *moan_check_errorcopy(uschar *);
341 extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
342 BOOL, uschar *);
343 extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
344 extern BOOL moan_send_message(uschar *, int, error_block *eblock,
345 header_line *, FILE *, uschar *);
346 extern void moan_tell_someone(uschar *, address_item *,
347 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
348 extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
349 extern void moan_write_from(FILE *);
350 extern void moan_write_references(FILE *, uschar *);
351 extern FILE *modefopen(const uschar *, const char *, mode_t);
352
353 extern int open_cutthrough_connection( address_item * addr );
354
355 extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
356 BOOL);
357 extern int parse_forward_list(uschar *, int, address_item **, uschar **,
358 const uschar *, uschar *, error_block **);
359 extern uschar *parse_find_address_end(uschar *, BOOL);
360 extern uschar *parse_find_at(uschar *);
361 extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
362 extern uschar *parse_message_id(uschar *, uschar **, uschar **);
363 extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
364 extern uschar *parse_date_time(uschar *str, time_t *t);
365 extern int vaguely_random_number(int);
366 #ifndef DISABLE_TLS
367 extern int vaguely_random_number_fallback(int);
368 #endif
369
370 extern BOOL queue_action(uschar *, int, uschar **, int, int);
371 extern void queue_check_only(void);
372 extern unsigned queue_count(void);
373 extern unsigned queue_count_cached(void);
374 extern void queue_list(int, uschar **, int);
375 #ifdef EXPERIMENTAL_QUEUE_RAMP
376 extern void queue_notify_daemon(const uschar * hostname);
377 #endif
378 extern void queue_run(uschar *, uschar *, BOOL);
379
380 extern int random_number(int);
381 extern const uschar *rc_to_string(int);
382 extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
383 uschar *, uschar *, uschar *, ugid_block *, address_item **,
384 uschar **, error_block **, int *, uschar *);
385 extern int rda_is_filter(const uschar *);
386 extern BOOL readconf_depends(driver_instance *, uschar *);
387 extern void readconf_driver_init(uschar *, driver_instance **,
388 driver_info *, int, void *, int, optionlist *, int);
389 extern uschar *readconf_find_option(void *);
390 extern void readconf_main(BOOL);
391 extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
392 extern BOOL readconf_print(uschar *, uschar *, BOOL);
393 extern uschar *readconf_printtime(int);
394 extern uschar *readconf_readname(uschar *, int, uschar *);
395 extern int readconf_readtime(const uschar *, int, BOOL);
396 extern void readconf_rest(void);
397 extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
398 extern void readconf_save_config(const uschar *);
399 extern void read_message_body(BOOL);
400 extern void receive_bomb_out(uschar *, uschar *) NORETURN;
401 extern BOOL receive_check_fs(int);
402 extern BOOL receive_check_set_sender(uschar *);
403 extern BOOL receive_msg(BOOL);
404 extern int_eximarith_t receive_statvfs(BOOL, int *);
405 extern void receive_swallow_smtp(void);
406 #ifdef WITH_CONTENT_SCAN
407 extern int regex(const uschar **);
408 #endif
409 extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
410 extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
411 extern void retry_add_item(address_item *, uschar *, int);
412 extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
413 uschar **, uschar **);
414 extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
415 extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
416 dbdata_retry *, time_t);
417 extern void retry_update(address_item **, address_item **, address_item **);
418 extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
419 extern uschar *rewrite_address_qualify(uschar *, BOOL);
420 extern header_line *rewrite_header(header_line *,
421 const uschar *, const uschar *,
422 rewrite_rule *, int, BOOL);
423 extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
424 rewrite_rule *);
425 extern void rewrite_test(uschar *);
426 extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
427 uschar **);
428 extern int route_address(address_item *, address_item **, address_item **,
429 address_item **, address_item **, int);
430 extern int route_check_prefix(const uschar *, const uschar *, unsigned *);
431 extern int route_check_suffix(const uschar *, const uschar *, unsigned *);
432 extern BOOL route_findgroup(uschar *, gid_t *);
433 extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
434 extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
435 uschar **);
436 extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
437 struct passwd **, uid_t *, uschar **);
438 extern void route_init(void);
439 extern gstring * route_show_supported(gstring *);
440 extern void route_tidyup(void);
441
442 extern uschar *search_find(void *, const uschar *, uschar *, int,
443 const uschar *, int, int, int *, const uschar *);
444 extern int search_findtype(const uschar *, int);
445 extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
446 int *, const uschar **);
447 extern void *search_open(const uschar *, int, int, uid_t *, gid_t *);
448 extern void search_tidyup(void);
449 extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
450 extern void sha1_end(hctx *, const uschar *, int, uschar *);
451 extern void sha1_mid(hctx *, const uschar *);
452 extern void sha1_start(hctx *);
453 extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
454 uschar *, address_item **, uschar **);
455 extern void sigalrm_handler(int);
456 extern BOOL smtp_buffered(void);
457 extern void smtp_closedown(uschar *);
458 extern void smtp_command_timeout_exit(void) NORETURN;
459 extern void smtp_command_sigterm_exit(void) NORETURN;
460 extern void smtp_data_timeout_exit(void) NORETURN;
461 extern void smtp_data_sigint_exit(void) NORETURN;
462 extern void smtp_deliver_init(void);
463 extern uschar *smtp_cmd_hist(void);
464 extern int smtp_connect(smtp_connect_args *, const blob *);
465 extern int smtp_sock_connect(host_item *, int, int, uschar *,
466 transport_instance * tb, int, const blob *);
467 extern int smtp_feof(void);
468 extern int smtp_ferror(void);
469 extern uschar *smtp_get_connection_info(void);
470 extern BOOL smtp_get_interface(uschar *, int, address_item *,
471 uschar **, uschar *);
472 extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
473 extern int smtp_getc(unsigned);
474 extern uschar *smtp_getbuf(unsigned *);
475 extern void smtp_get_cache(void);
476 extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
477 extern void smtp_log_no_mail(void);
478 extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
479 extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int) NORETURN;
480 extern BOOL smtp_read_response(void *, uschar *, int, int, int);
481 extern void *smtp_reset(void *);
482 extern void smtp_respond(uschar *, int, BOOL, uschar *);
483 extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
484 extern void smtp_port_for_connect(host_item *, int);
485 extern void smtp_send_prohibition_message(int, uschar *);
486 extern int smtp_setup_msg(void);
487 extern BOOL smtp_start_session(void);
488 extern int smtp_ungetc(int);
489 extern BOOL smtp_verify_helo(void);
490 extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
491 #ifdef WITH_CONTENT_SCAN
492 extern int spam(const uschar **);
493 extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
494 #endif
495 extern void spool_clear_header_globals(void);
496 extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
497 extern int spool_open_datafile(uschar *);
498 extern int spool_open_temp(uschar *);
499 extern int spool_read_header(uschar *, BOOL, BOOL);
500 extern int spool_write_header(uschar *, int, uschar **);
501 extern int stdin_getc(unsigned);
502 extern int stdin_feof(void);
503 extern int stdin_ferror(void);
504 extern int stdin_ungetc(int);
505
506 extern void store_exit(void);
507 extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
508 extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
509 extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
510 extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
511 extern uschar *string_base62(unsigned long int);
512 extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
513 extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
514 extern int string_compare_by_pointer(const void *, const void *);
515 extern uschar *string_copy_dnsdomain(uschar *);
516 extern uschar *string_copy_malloc(const uschar *);
517 extern uschar *string_dequote(const uschar **);
518 extern uschar *string_format_size(int, uschar *);
519 extern int string_interpret_escape(const uschar **);
520 extern int string_is_ip_address(const uschar *, int *);
521 #ifdef SUPPORT_I18N
522 extern BOOL string_is_utf8(const uschar *);
523 #endif
524 extern const uschar *string_printing2(const uschar *, BOOL);
525 extern uschar *string_split_message(uschar *);
526 extern uschar *string_unprinting(uschar *);
527 #ifdef SUPPORT_I18N
528 extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
529 extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
530 extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
531 extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
532 extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
533 #endif
534
535 #define string_format(buf, siz, fmt, ...) \
536 string_format_trc(buf, siz, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
537 extern BOOL string_format_trc(uschar *, int, const uschar *, unsigned,
538 const char *, ...) ALMOST_PRINTF(5,6);
539
540 #define string_vformat(g, flgs, fmt, ap) \
541 string_vformat_trc(g, US __FUNCTION__, __LINE__, \
542 STRING_SPRINTF_BUFFER_SIZE, flgs, fmt, ap)
543 extern gstring *string_vformat_trc(gstring *, const uschar *, unsigned,
544 unsigned, unsigned, const char *, va_list);
545
546 #define string_open_failed(eno, fmt, ...) \
547 string_open_failed_trc(eno, US __FUNCTION__, __LINE__, fmt, __VA_ARGS__)
548 extern uschar *string_open_failed_trc(int, const uschar *, unsigned,
549 const char *, ...) PRINTF_FUNCTION(4,5);
550
551 #define string_nextinlist(lp, sp, b, l) \
552 string_nextinlist_trc((lp), (sp), (b), (l), US __FUNCTION__, __LINE__)
553 extern uschar *string_nextinlist_trc(const uschar **listptr, int *separator, uschar *buffer, int buflen,
554 const uschar * func, int line);
555
556 extern int strcmpic(const uschar *, const uschar *);
557 extern int strncmpic(const uschar *, const uschar *, int);
558 extern uschar *strstric(uschar *, uschar *, BOOL);
559
560 extern int test_harness_fudged_queue_time(int);
561 extern void tcp_init(void);
562 #ifdef EXIM_TFO_PROBE
563 extern void tfo_probe(void);
564 #endif
565 extern void tls_modify_variables(tls_support *);
566 extern uschar *tod_stamp(int);
567
568 extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
569 BOOL *, oicf, void*);
570 extern void transport_init(void);
571 extern void transport_do_pass_socket(const uschar *, const uschar *,
572 const uschar *, uschar *, int);
573 extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
574 int);
575 extern uschar *transport_rcpt_address(address_item *, BOOL);
576 extern BOOL transport_set_up_command(const uschar ***, uschar *,
577 BOOL, int, address_item *, uschar *, uschar **);
578 extern void transport_update_waiting(host_item *, uschar *);
579 extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
580 extern void transport_write_reset(int);
581 extern BOOL transport_write_string(int, const char *, ...);
582 extern BOOL transport_headers_send(transport_ctx *,
583 BOOL (*)(transport_ctx *, uschar *, int));
584 extern gstring * transport_show_supported(gstring *);
585 extern BOOL transport_write_message(transport_ctx *, int);
586 extern void tree_add_duplicate(uschar *, address_item *);
587 extern void tree_add_nonrecipient(uschar *);
588 extern void tree_add_unusable(host_item *);
589 extern void tree_dup(tree_node **, tree_node *);
590 extern int tree_insertnode(tree_node **, tree_node *);
591 extern tree_node *tree_search(tree_node *, const uschar *);
592 extern void tree_write(tree_node *, FILE *);
593 extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
594
595 #ifdef WITH_CONTENT_SCAN
596 extern void unspool_mbox(void);
597 #endif
598 #ifdef SUPPORT_I18N
599 extern void utf8_version_report(FILE *);
600 #endif
601
602 extern int verify_address(address_item *, FILE *, int, int, int, int,
603 uschar *, uschar *, BOOL *);
604 extern int verify_check_dnsbl(int, const uschar **, uschar **);
605 extern int verify_check_header_address(uschar **, uschar **, int, int, int,
606 uschar *, uschar *, int, int *);
607 extern int verify_check_headers(uschar **);
608 extern int verify_check_header_names_ascii(uschar **);
609 extern int verify_check_host(uschar **);
610 extern int verify_check_notblind(BOOL);
611 extern int verify_check_given_host(const uschar **, const host_item *);
612 extern int verify_check_this_host(const uschar **, unsigned int *,
613 const uschar*, const uschar *, const uschar **);
614 extern address_item *verify_checked_sender(uschar *);
615 extern void verify_get_ident(int);
616 extern BOOL verify_sender(int *, uschar **);
617 extern BOOL verify_sender_preliminary(int *, uschar **);
618 extern void version_init(void);
619
620 extern BOOL write_chunk(transport_ctx *, uschar *, int);
621 extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
622
623
624 /******************************************************************************/
625 /* Predicate: if an address is in a tainted pool.
626 By extension, a variable pointing to this address is tainted.
627 */
628
629 static inline BOOL
630 is_tainted(const void * p)
631 {
632 #if defined(COMPILE_UTILITY) || defined(MACRO_PREDEF) || defined(EM_VERSION_C)
633 return FALSE;
634
635 #else
636 extern BOOL is_tainted_fn(const void *);
637 return is_tainted_fn(p);
638 #endif
639 }
640
641 /******************************************************************************/
642 /* String functions */
643 static inline uschar * __Ustrcat(uschar * dst, const uschar * src, const char * func, int line)
644 {
645 #if !defined(COMPILE_UTILITY) && !defined(MACRO_PREDEF)
646 if (!is_tainted(dst) && is_tainted(src)) die_tainted(US"Ustrcat", CUS func, line);
647 #endif
648 return US strcat(CS dst, CCS src);
649 }
650 static inline uschar * __Ustrcpy(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"Ustrcpy", CUS func, line);
654 #endif
655 return US strcpy(CS dst, CCS src);
656 }
657 static inline uschar * __Ustrncat(uschar * dst, const uschar * src, size_t n, 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"Ustrncat", CUS func, line);
661 #endif
662 return US strncat(CS dst, CCS src, n);
663 }
664 static inline uschar * __Ustrncpy(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"Ustrncpy", CUS func, line);
668 #endif
669 return US strncpy(CS dst, CCS src, n);
670 }
671 /*XXX will likely need unchecked copy also */
672
673
674 /* Advance the string pointer given over any whitespace.
675 Return the next char as there's enought places using it to be useful. */
676
677 #define Uskip_whitespace(sp) skip_whitespace(CUSS sp)
678
679 static inline uschar skip_whitespace(const uschar ** sp)
680 { while (isspace(**sp)) (*sp)++; return **sp; }
681
682
683 /******************************************************************************/
684
685 #if !defined(MACRO_PREDEF) && !defined(COMPILE_UTILITY)
686 /* exim_chown - in some NFSv4 setups *seemes* to be an issue with
687 chown(<exim-uid>, <exim-gid>).
688
689 Probably because the idmapping is broken, misconfigured or set up in
690 an unusal way. (see Bug 2931). As I'm not sure, if this was a single
691 case of misconfiguration, or if there are more such broken systems
692 out, I try to impose as least impact as possible and for now just write
693 a panic log entry pointing to the bug report. You're encouraged to
694 contact the developers, if you experience this issue.
695
696 fd the file descriptor (or -1 if not valid)
697 name the file name for error messages or for file operations,
698 if fd is < 0
699 owner the owner
700 group the group
701
702 returns 0 on success, -1 on failure */
703
704 static inline int
705 exim_fchown(int fd, uid_t owner, gid_t group, const uschar *name)
706 {
707 return fchown(fd, owner, group)
708 ? exim_chown_failure(fd, name, owner, group) : 0;
709 }
710
711 static inline int
712 exim_chown(const uschar *name, uid_t owner, gid_t group)
713 {
714 return chown(CCS name, owner, group)
715 ? exim_chown_failure(-1, name, owner, group) : 0;
716 }
717 #endif /* !MACRO_PREDEF && !COMPILE_UTILITY */
718
719 /******************************************************************************/
720 /* String functions */
721
722 #if !defined(MACRO_PREDEF)
723 /*************************************************
724 * Copy and save string *
725 *************************************************/
726
727 /* This function assumes that memcpy() is faster than strcpy().
728 The result is explicitly nul-terminated.
729 */
730
731 static inline uschar *
732 string_copyn_taint_trc(const uschar * s, unsigned len,
733 BOOL tainted, const char * func, int line)
734 {
735 uschar * ss = store_get_3(len + 1, tainted, func, line);
736 memcpy(ss, s, len);
737 ss[len] = '\0';
738 return ss;
739 }
740
741 static inline uschar *
742 string_copy_taint_trc(const uschar * s, BOOL tainted, const char * func, int line)
743 { return string_copyn_taint_trc(s, Ustrlen(s), tainted, func, line); }
744
745 static inline uschar *
746 string_copyn_trc(const uschar * s, unsigned len, const char * func, int line)
747 { return string_copyn_taint_trc(s, len, is_tainted(s), func, line); }
748 static inline uschar *
749 string_copy_trc(const uschar * s, const char * func, int line)
750 { return string_copy_taint_trc(s, is_tainted(s), func, line); }
751
752
753 /* String-copy functions explicitly setting the taint status */
754
755 #define string_copyn_taint(s, len, tainted) \
756 string_copyn_taint_trc((s), (len), (tainted), __FUNCTION__, __LINE__)
757 #define string_copy_taint(s, tainted) \
758 string_copy_taint_trc((s), (tainted), __FUNCTION__, __LINE__)
759
760 /* Simple string-copy functions maintaining the taint */
761
762 #define string_copyn(s, len) \
763 string_copyn_taint_trc((s), (len), is_tainted(s), __FUNCTION__, __LINE__)
764 #define string_copy(s) \
765 string_copy_taint_trc((s), is_tainted(s), __FUNCTION__, __LINE__)
766
767
768 /*************************************************
769 * Copy, lowercase and save string *
770 *************************************************/
771
772 /*
773 Argument: string to copy
774 Returns: copy of string in new store, with letters lowercased
775 */
776
777 static inline uschar *
778 string_copylc(const uschar *s)
779 {
780 uschar *ss = store_get(Ustrlen(s) + 1, is_tainted(s));
781 uschar *p = ss;
782 while (*s != 0) *p++ = tolower(*s++);
783 *p = 0;
784 return ss;
785 }
786
787
788
789 /*************************************************
790 * Copy, lowercase, and save string, given length *
791 *************************************************/
792
793 /* It is assumed the data contains no zeros. A zero is added
794 onto the end.
795
796 Arguments:
797 s string to copy
798 n number of characters
799
800 Returns: copy of string in new store, with letters lowercased
801 */
802
803 static inline uschar *
804 string_copynlc(uschar *s, int n)
805 {
806 uschar *ss = store_get(n + 1, is_tainted(s));
807 uschar *p = ss;
808 while (n-- > 0) *p++ = tolower(*s++);
809 *p = 0;
810 return ss;
811 }
812
813
814 # ifndef COMPILE_UTILITY
815 /*************************************************
816 * Copy and save string in longterm store *
817 *************************************************/
818
819 /* This function assumes that memcpy() is faster than strcpy().
820
821 Argument: string to copy
822 Returns: copy of string in new store
823 */
824
825 static inline uschar *
826 string_copy_perm(const uschar *s, BOOL force_taint)
827 {
828 int old_pool = store_pool;
829 int len = Ustrlen(s) + 1;
830 uschar *ss;
831
832 store_pool = POOL_PERM;
833 ss = store_get(len, force_taint || is_tainted(s));
834 memcpy(ss, s, len);
835 store_pool = old_pool;
836 return ss;
837 }
838 # endif
839
840
841
842 /* sprintf into a buffer, taint-unchecked */
843
844 static inline void
845 string_format_nt(uschar * buf, int siz, const char * fmt, ...)
846 {
847 gstring gs = { .size = siz, .ptr = 0, .s = buf };
848 va_list ap;
849 va_start(ap, fmt);
850 (void) string_vformat(&gs, SVFMT_TAINT_NOCHK, fmt, ap);
851 va_end(ap);
852 }
853
854
855
856 /******************************************************************************/
857 /* Growable-string functions */
858
859 /* Create a growable-string with some preassigned space */
860
861 #define string_get_tainted(size, tainted) \
862 string_get_tainted_trc((size), (tainted), __FUNCTION__, __LINE__)
863
864 static inline gstring *
865 string_get_tainted_trc(unsigned size, BOOL tainted, const char * func, unsigned line)
866 {
867 gstring * g = store_get_3(sizeof(gstring) + size, tainted, func, line);
868 g->size = size;
869 g->ptr = 0;
870 g->s = US(g + 1);
871 return g;
872 }
873
874 #define string_get(size) \
875 string_get_trc((size), __FUNCTION__, __LINE__)
876
877 static inline gstring *
878 string_get_trc(unsigned size, const char * func, unsigned line)
879 {
880 return string_get_tainted_trc(size, FALSE, func, line);
881 }
882
883 /* NUL-terminate the C string in the growable-string, and return it. */
884
885 static inline uschar *
886 string_from_gstring(gstring * g)
887 {
888 if (!g) return NULL;
889 g->s[g->ptr] = '\0';
890 return g->s;
891 }
892
893 static inline unsigned
894 gstring_length(const gstring * g)
895 {
896 return g ? (unsigned)g->ptr : 0;
897 }
898
899
900 #define gstring_release_unused(g) \
901 gstring_release_unused_trc(g, __FUNCTION__, __LINE__)
902
903 static inline void
904 gstring_release_unused_trc(gstring * g, const char * file, unsigned line)
905 {
906 if (g) store_release_above_3(g->s + (g->size = g->ptr + 1), file, line);
907 }
908
909
910 /* sprintf-append to a growable-string */
911
912 #define string_fmt_append(g, fmt, ...) \
913 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
914 SVFMT_EXTEND|SVFMT_REBUFFER, fmt, __VA_ARGS__)
915
916 #define string_fmt_append_f(g, flgs, fmt, ...) \
917 string_fmt_append_f_trc(g, US __FUNCTION__, __LINE__, \
918 flgs, fmt, __VA_ARGS__)
919
920 static inline gstring *
921 string_fmt_append_f_trc(gstring * g, const uschar * func, unsigned line,
922 unsigned flags, const char *format, ...)
923 {
924 va_list ap;
925 va_start(ap, format);
926 g = string_vformat_trc(g, func, line, STRING_SPRINTF_BUFFER_SIZE,
927 flags, format, ap);
928 va_end(ap);
929 return g;
930 }
931
932
933 /* Copy the content of a string to tainted memory */
934
935 static inline void
936 gstring_rebuffer(gstring * g)
937 {
938 uschar * s = store_get(g->size, TRUE);
939 memcpy(s, g->s, g->ptr);
940 g->s = s;
941 }
942
943
944 /******************************************************************************/
945
946 #define store_get_dns_answer() store_get_dns_answer_trc(CUS __FUNCTION__, __LINE__)
947
948 static inline dns_answer *
949 store_get_dns_answer_trc(const uschar * func, unsigned line)
950 {
951 return store_get_3(sizeof(dns_answer), TRUE, CCS func, line); /* use tainted mem */
952 }
953
954 /******************************************************************************/
955 /* Routines with knowledge of spool layout */
956
957 # ifndef COMPILE_UTILITY
958 static inline void
959 spool_pname_buf(uschar * buf, int len)
960 {
961 snprintf(CS buf, len, "%s/%s/input", spool_directory, queue_name);
962 }
963
964 static inline uschar *
965 spool_dname(const uschar * purpose, uschar * subdir)
966 {
967 return string_sprintf("%s/%s/%s/%s",
968 spool_directory, queue_name, purpose, subdir);
969 }
970 # endif
971
972 static inline uschar *
973 spool_q_sname(const uschar * purpose, const uschar * q, uschar * subdir)
974 {
975 return string_sprintf("%s%s%s%s%s",
976 q, *q ? "/" : "",
977 purpose,
978 *subdir ? "/" : "", subdir);
979 }
980
981 static inline uschar *
982 spool_sname(const uschar * purpose, uschar * subdir)
983 {
984 return spool_q_sname(purpose, queue_name, subdir);
985 }
986
987 static inline uschar *
988 spool_q_fname(const uschar * purpose, const uschar * q,
989 const uschar * subdir, const uschar * fname, const uschar * suffix)
990 {
991 return string_sprintf("%s/%s/%s/%s/%s%s",
992 spool_directory, q, purpose, subdir, fname, suffix);
993 }
994
995 static inline uschar *
996 spool_fname(const uschar * purpose, const uschar * subdir, const uschar * fname,
997 const uschar * suffix)
998 {
999 #ifdef COMPILE_UTILITY /* version avoiding string-extension */
1000 int len = Ustrlen(spool_directory) + 1 + Ustrlen(queue_name) + 1 + Ustrlen(purpose) + 1
1001 + Ustrlen(subdir) + 1 + Ustrlen(fname) + Ustrlen(suffix) + 1;
1002 uschar * buf = store_get(len, FALSE);
1003 string_format(buf, len, "%s/%s/%s/%s/%s%s",
1004 spool_directory, queue_name, purpose, subdir, fname, suffix);
1005 return buf;
1006 #else
1007 return spool_q_fname(purpose, queue_name, subdir, fname, suffix);
1008 #endif
1009 }
1010
1011 static inline void
1012 set_subdir_str(uschar * subdir_str, const uschar * name,
1013 int search_sequence)
1014 {
1015 subdir_str[0] = split_spool_directory == (search_sequence == 0)
1016 ? name[5] : '\0';
1017 subdir_str[1] = '\0';
1018 }
1019
1020 /******************************************************************************/
1021 /* Time calculations */
1022
1023 static inline void
1024 timesince(struct timeval * diff, const struct timeval * then)
1025 {
1026 gettimeofday(diff, NULL);
1027 diff->tv_sec -= then->tv_sec;
1028 if ((diff->tv_usec -= then->tv_usec) < 0)
1029 {
1030 diff->tv_sec--;
1031 diff->tv_usec += 1000*1000;
1032 }
1033 }
1034
1035 static inline uschar *
1036 string_timediff(const struct timeval * diff)
1037 {
1038 static uschar buf[sizeof("0.000s")];
1039
1040 if (diff->tv_sec >= 5 || !LOGGING(millisec))
1041 return readconf_printtime((int)diff->tv_sec);
1042
1043 snprintf(CS buf, sizeof(buf), "%u.%03us", (uint)diff->tv_sec, (uint)diff->tv_usec/1000);
1044 return buf;
1045 }
1046
1047
1048 static inline uschar *
1049 string_timesince(const struct timeval * then)
1050 {
1051 struct timeval diff;
1052 timesince(&diff, then);
1053 return string_timediff(&diff);
1054 }
1055
1056 static inline void
1057 report_time_since(const struct timeval * t0, const uschar * where)
1058 {
1059 # ifdef MEASURE_TIMING
1060 struct timeval diff;
1061 timesince(&diff, t0);
1062 fprintf(stderr, "%d %s:\t%ld.%06ld\n",
1063 (uint)getpid(), where, (long)diff.tv_sec, (long)diff.tv_usec);
1064 # endif
1065 }
1066
1067
1068 static inline void
1069 testharness_pause_ms(int millisec)
1070 {
1071 #ifndef MEASURE_TIMING
1072 if (f.running_in_test_harness && f.testsuite_delays) millisleep(millisec);
1073 #endif
1074 }
1075
1076 /******************************************************************************/
1077 /* Taint-checked file opens */
1078
1079 static inline int
1080 exim_open2(const char *pathname, int flags)
1081 {
1082 if (!is_tainted(pathname)) return open(pathname, flags);
1083 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1084 errno = EACCES;
1085 return -1;
1086 }
1087 static inline int
1088 exim_open(const char *pathname, int flags, mode_t mode)
1089 {
1090 if (!is_tainted(pathname)) return open(pathname, flags, mode);
1091 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1092 errno = EACCES;
1093 return -1;
1094 }
1095 static inline int
1096 exim_openat(int dirfd, const char *pathname, int flags)
1097 {
1098 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags);
1099 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1100 errno = EACCES;
1101 return -1;
1102 }
1103 static inline int
1104 exim_openat4(int dirfd, const char *pathname, int flags, mode_t mode)
1105 {
1106 if (!is_tainted(pathname)) return openat(dirfd, pathname, flags, mode);
1107 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1108 errno = EACCES;
1109 return -1;
1110 }
1111
1112 static inline FILE *
1113 exim_fopen(const char *pathname, const char *mode)
1114 {
1115 if (!is_tainted(pathname)) return fopen(pathname, mode);
1116 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted filename '%s'", pathname);
1117 errno = EACCES;
1118 return NULL;
1119 }
1120
1121 static inline DIR *
1122 exim_opendir(const uschar * name)
1123 {
1124 if (!is_tainted(name)) return opendir(CCS name);
1125 log_write(0, LOG_MAIN|LOG_PANIC, "Tainted dirname '%s'", name);
1126 errno = EACCES;
1127 return NULL;
1128 }
1129
1130 /******************************************************************************/
1131 # if !defined(COMPILE_UTILITY)
1132 /* Process manipulation */
1133
1134 static inline pid_t
1135 exim_fork(const unsigned char * purpose)
1136 {
1137 pid_t pid;
1138 DEBUG(D_any) debug_printf("%s forking for %s\n", process_purpose, purpose);
1139 if ((pid = fork()) == 0)
1140 {
1141 process_purpose = purpose;
1142 DEBUG(D_any) debug_printf("postfork: %s\n", purpose);
1143 }
1144 else
1145 {
1146 testharness_pause_ms(100); /* let child work */
1147 DEBUG(D_any) debug_printf("%s forked for %s: %d\n", process_purpose, purpose, (int)pid);
1148 }
1149 return pid;
1150 }
1151
1152
1153 static inline pid_t
1154 child_open_exim(int * fdptr, const uschar * purpose)
1155 { return child_open_exim_function(fdptr, purpose); }
1156
1157 static inline pid_t
1158 child_open_exim2(int * fdptr, uschar * sender,
1159 uschar * sender_auth, const uschar * purpose)
1160 { return child_open_exim2_function(fdptr, sender, sender_auth, purpose); }
1161
1162 static inline pid_t
1163 child_open(uschar **argv, uschar **envp, int newumask, int *infdptr,
1164 int *outfdptr, BOOL make_leader, const uschar * purpose)
1165 { return child_open_function(argv, envp, newumask, infdptr,
1166 outfdptr, make_leader, purpose);
1167 }
1168
1169 # endif /* !COMPILE_UTILITY */
1170
1171 /******************************************************************************/
1172 #endif /* !MACRO_PREDEF */
1173
1174 #endif /* _FUNCTIONS_H_ */
1175
1176 /* vi: aw
1177 */
1178 /* End of functions.h */