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TLS: refactor client-start interface
[exim.git] / src / src / functions.h
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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
10to avoid having a lot of tiddly little headers with only a couple of lines in
11them. However, some functions that are used (or not used) by utility programs
12are in in fact in separate headers. */
13
14
15#ifdef EXIM_PERL
16extern gstring *call_perl_cat(gstring *, uschar **, uschar *,
17 uschar **) WARN_UNUSED_RESULT;
18extern void cleanup_perl(void);
19extern uschar *init_perl(uschar *);
20#endif
21
22
23#ifdef SUPPORT_TLS
24extern const char *
25 std_dh_prime_default(void);
26extern const char *
27 std_dh_prime_named(const uschar *);
28
29extern uschar * tls_cert_crl_uri(void *, uschar * mod);
30extern uschar * tls_cert_ext_by_oid(void *, uschar *, int);
31extern uschar * tls_cert_issuer(void *, uschar * mod);
32extern uschar * tls_cert_not_before(void *, uschar * mod);
33extern uschar * tls_cert_not_after(void *, uschar * mod);
34extern uschar * tls_cert_ocsp_uri(void *, uschar * mod);
35extern uschar * tls_cert_serial_number(void *, uschar * mod);
36extern uschar * tls_cert_signature(void *, uschar * mod);
37extern uschar * tls_cert_signature_algorithm(void *, uschar * mod);
38extern uschar * tls_cert_subject(void *, uschar * mod);
39extern uschar * tls_cert_subject_altname(void *, uschar * mod);
40extern uschar * tls_cert_version(void *, uschar * mod);
41
42extern uschar * tls_cert_der_b64(void * cert);
43extern uschar * tls_cert_fprt_md5(void *);
44extern uschar * tls_cert_fprt_sha1(void *);
45extern uschar * tls_cert_fprt_sha256(void *);
46
47extern BOOL tls_client_start(client_conn_ctx *, smtp_connect_args *,
48 void *, tls_support *, uschar **);
49
50extern void tls_close(void *, int);
51extern BOOL tls_could_read(void);
52extern int tls_export_cert(uschar *, size_t, void *);
53extern int tls_feof(void);
54extern int tls_ferror(void);
55extern void tls_free_cert(void **);
56extern int tls_getc(unsigned);
57extern uschar *tls_getbuf(unsigned *);
58extern void tls_get_cache(void);
59extern int tls_import_cert(const uschar *, void **);
60extern int tls_read(void *, uschar *, size_t);
61extern int tls_server_start(const uschar *, uschar **);
62extern BOOL tls_smtp_buffered(void);
63extern int tls_ungetc(int);
64extern int tls_write(void *, const uschar *, size_t, BOOL);
65extern uschar *tls_validate_require_cipher(void);
66extern void tls_version_report(FILE *);
67# ifndef USE_GNUTLS
68extern BOOL tls_openssl_options_parse(uschar *, long *);
69# endif
70extern uschar * tls_field_from_dn(uschar *, const uschar *);
71extern BOOL tls_is_name_for_cert(const uschar *, void *);
72
73# ifdef SUPPORT_DANE
74extern int tlsa_lookup(const host_item *, dns_answer *, BOOL);
75# endif
76
77#endif /*SUPPORT_TLS*/
78
79
80/* Everything else... */
81
82extern acl_block *acl_read(uschar *(*)(void), uschar **);
83extern int acl_check(int, uschar *, uschar *, uschar **, uschar **);
84extern int acl_eval(int, uschar *, uschar **, uschar **);
85
86extern tree_node *acl_var_create(uschar *);
87extern void acl_var_write(uschar *, uschar *, void *);
88
89#ifdef EXPERIMENTAL_ARC
90extern void *arc_ams_setup_sign_bodyhash(void);
91extern const uschar *arc_header_feed(gstring *, BOOL);
92extern gstring *arc_sign(const uschar *, gstring *, uschar **);
93extern void arc_sign_init(void);
94extern const uschar *acl_verify_arc(void);
95extern uschar * fn_arc_domains(void);
96#endif
97
98extern void assert_no_variables(void *, int, const char *, int);
99extern int auth_call_pam(const uschar *, uschar **);
100extern int auth_call_pwcheck(uschar *, uschar **);
101extern int auth_call_radius(const uschar *, uschar **);
102extern int auth_call_saslauthd(const uschar *, const uschar *,
103 const uschar *, const uschar *, uschar **);
104extern int auth_check_serv_cond(auth_instance *);
105extern int auth_check_some_cond(auth_instance *, uschar *, uschar *, int);
106extern int auth_client_item(void *, auth_instance *, const uschar **,
107 unsigned, int, uschar *, int);
108
109
110extern int auth_get_data(uschar **, const uschar *, int);
111extern int auth_get_no64_data(uschar **, uschar *);
112extern int auth_prompt(const uschar *);
113extern int auth_read_input(const uschar *);
114extern void auth_show_supported(FILE *);
115extern uschar *auth_xtextencode(uschar *, int);
116extern int auth_xtextdecode(uschar *, uschar **);
117
118#ifdef EXPERIMENTAL_ARC
119extern gstring *authres_arc(gstring *);
120#endif
121#ifndef DISABLE_DKIM
122extern gstring *authres_dkim(gstring *);
123#endif
124#ifdef EXPERIMENTAL_DMARC
125extern gstring *authres_dmarc(gstring *);
126#endif
127extern gstring *authres_smtpauth(gstring *);
128#ifdef SUPPORT_SPF
129extern gstring *authres_spf(gstring *);
130#endif
131
132extern uschar *b64encode(const uschar *, int);
133extern int b64decode(const uschar *, uschar **);
134extern int bdat_getc(unsigned);
135extern uschar *bdat_getbuf(unsigned *);
136extern int bdat_ungetc(int);
137extern void bdat_flush_data(void);
138
139extern void bits_clear(unsigned int *, size_t, int *);
140extern void bits_set(unsigned int *, size_t, int *);
141
142extern void cancel_cutthrough_connection(BOOL, const uschar *);
143extern int check_host(void *, const uschar *, const uschar **, uschar **);
144extern uschar **child_exec_exim(int, BOOL, int *, BOOL, int, ...);
145extern pid_t child_open_uid(const uschar **, const uschar **, int,
146 uid_t *, gid_t *, int *, int *, uschar *, BOOL);
147extern BOOL cleanup_environment(void);
148extern void cutthrough_data_puts(uschar *, int);
149extern void cutthrough_data_put_nl(void);
150extern uschar *cutthrough_finaldot(void);
151extern BOOL cutthrough_flush_send(void);
152extern BOOL cutthrough_headers_send(void);
153extern BOOL cutthrough_predata(void);
154extern void release_cutthrough_connection(const uschar *);
155
156extern void daemon_go(void);
157
158#ifdef EXPERIMENTAL_DCC
159extern int dcc_process(uschar **);
160#endif
161
162extern void debug_logging_activate(uschar *, uschar *);
163extern void debug_logging_stop(void);
164extern void debug_print_argv(const uschar **);
165extern void debug_print_ids(uschar *);
166extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
167extern void debug_print_string(uschar *);
168extern void debug_print_tree(tree_node *);
169extern void debug_vprintf(int, const char *, va_list);
170extern void decode_bits(unsigned int *, size_t, int *,
171 uschar *, bit_table *, int, uschar *, int);
172extern address_item *deliver_make_addr(uschar *, BOOL);
173extern void deliver_init(void);
174extern void delivery_log(int, address_item *, int, uschar *);
175extern int deliver_message(uschar *, BOOL, BOOL);
176extern void deliver_msglog(const char *, ...) PRINTF_FUNCTION(1,2);
177extern void deliver_set_expansions(address_item *);
178extern int deliver_split_address(address_item *);
179extern void deliver_succeeded(address_item *);
180
181extern uschar *deliver_get_sender_address (uschar *id);
182extern void delivery_re_exec(int);
183
184extern BOOL directory_make(const uschar *, const uschar *, int, BOOL);
185#ifndef DISABLE_DKIM
186extern uschar *dkim_exim_query_dns_txt(uschar *);
187extern void dkim_exim_sign_init(void);
188
189extern BOOL dkim_transport_write_message(transport_ctx *,
190 struct ob_dkim *, const uschar ** errstr);
191#endif
192extern dns_address *dns_address_from_rr(dns_answer *, dns_record *);
193extern int dns_basic_lookup(dns_answer *, const uschar *, int);
194extern void dns_build_reverse(const uschar *, uschar *);
195extern void dns_init(BOOL, BOOL, BOOL);
196extern BOOL dns_is_aa(const dns_answer *);
197extern BOOL dns_is_secure(const dns_answer *);
198extern int dns_lookup(dns_answer *, const uschar *, int, const uschar **);
199extern void dns_pattern_init(void);
200extern int dns_special_lookup(dns_answer *, const uschar *, int, const uschar **);
201extern dns_record *dns_next_rr(const dns_answer *, dns_scan *, int);
202extern uschar *dns_text_type(int);
203extern void dscp_list_to_stream(FILE *);
204extern BOOL dscp_lookup(const uschar *, int, int *, int *, int *);
205
206extern void enq_end(uschar *);
207extern BOOL enq_start(uschar *, unsigned);
208#ifndef DISABLE_EVENT
209extern uschar *event_raise(uschar *, const uschar *, uschar *);
210extern void msg_event_raise(const uschar *, const address_item *);
211#endif
212extern const uschar * exim_errstr(int);
213extern void exim_exit(int, const uschar *);
214extern void exim_nullstd(void);
215extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
216extern void exim_wait_tick(struct timeval *, int);
217extern int exp_bool(address_item *addr,
218 uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
219 uschar *svalue, BOOL *rvalue);
220extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
221extern uschar *expand_file_big_buffer(const uschar *);
222extern uschar *expand_string(uschar *); /* public, cannot make const */
223extern const uschar *expand_cstring(const uschar *); /* ... so use this one */
224extern uschar *expand_hide_passwords(uschar * );
225extern uschar *expand_string_copy(const uschar *);
226extern int_eximarith_t expand_string_integer(uschar *, BOOL);
227extern void modify_variable(uschar *, void *);
228
229extern BOOL fd_ready(int, int);
230
231extern int filter_interpret(uschar *, int, address_item **, uschar **);
232extern BOOL filter_personal(string_item *, BOOL);
233extern BOOL filter_runtest(int, uschar *, BOOL, BOOL);
234extern BOOL filter_system_interpret(address_item **, uschar **);
235
236extern uschar * fn_hdrs_added(void);
237
238extern void gstring_reset_unused(gstring *);
239
240extern void header_add(int, const char *, ...);
241extern header_line *header_add_at_position_internal(BOOL, uschar *, BOOL, int, const char *, ...);
242extern int header_checkname(header_line *, BOOL);
243extern BOOL header_match(uschar *, BOOL, BOOL, string_item *, int, ...);
244extern int host_address_extract_port(uschar *);
245extern uschar *host_and_ident(BOOL);
246extern int host_aton(const uschar *, int *);
247extern void host_build_hostlist(host_item **, const uschar *, BOOL);
248extern ip_address_item *host_build_ifacelist(const uschar *, uschar *);
249extern void host_build_log_info(void);
250extern void host_build_sender_fullhost(void);
251extern int host_find_byname(host_item *, const uschar *, int,
252 const uschar **, BOOL);
253extern int host_find_bydns(host_item *, const uschar *, int, uschar *, uschar *,
254 uschar *, const dnssec_domains *, const uschar **, BOOL *);
255extern ip_address_item *host_find_interfaces(void);
256extern BOOL host_is_in_net(const uschar *, const uschar *, int);
257extern BOOL host_is_tls_on_connect_port(int);
258extern int host_item_get_port(host_item *);
259extern void host_mask(int, int *, int);
260extern int host_name_lookup(void);
261extern int host_nmtoa(int, int *, int, uschar *, int);
262extern uschar *host_ntoa(int, const void *, uschar *, int *);
263extern int host_scan_for_local_hosts(host_item *, host_item **, BOOL *);
264
265extern uschar *imap_utf7_encode(uschar *, const uschar *,
266 uschar, uschar *, uschar **);
267
268extern void invert_address(uschar *, uschar *);
269extern int ip_addr(void *, int, const uschar *, int);
270extern int ip_bind(int, int, uschar *, int);
271extern int ip_connect(int, int, const uschar *, int, int, const blob *);
272extern int ip_connectedsocket(int, const uschar *, int, int,
273 int, host_item *, uschar **, const blob *);
274extern int ip_get_address_family(int);
275extern void ip_keepalive(int, const uschar *, BOOL);
276extern int ip_recv(client_conn_ctx *, uschar *, int, int);
277extern int ip_socket(int, int);
278
279extern int ip_tcpsocket(const uschar *, uschar **, int);
280extern int ip_unixsocket(const uschar *, uschar **);
281extern int ip_streamsocket(const uschar *, uschar **, int);
282
283extern int ipv6_nmtoa(int *, uschar *);
284
285extern uschar *local_part_quote(uschar *);
286extern int log_create(uschar *);
287extern int log_create_as_exim(uschar *);
288extern void log_close_all(void);
289
290extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
291extern BOOL macro_read_assignment(uschar *);
292extern uschar *macros_expand(int, int *, BOOL *);
293extern void mainlog_close(void);
294#ifdef WITH_CONTENT_SCAN
295extern int malware(const uschar *, int);
296extern int malware_in_file(uschar *);
297extern void malware_init(void);
298extern void malware_show_supported(FILE *);
299#endif
300extern int match_address_list(const uschar *, BOOL, BOOL, const uschar **,
301 unsigned int *, int, int, const uschar **);
302extern int match_address_list_basic(const uschar *, const uschar **, int);
303extern int match_check_list(const uschar **, int, tree_node **, unsigned int **,
304 int(*)(void *, const uschar *, const uschar **, uschar **), void *, int,
305 const uschar *, const uschar **);
306extern int match_isinlist(const uschar *, const uschar **, int, tree_node **,
307 unsigned int *, int, BOOL, const uschar **);
308extern int match_check_string(const uschar *, const uschar *, int, BOOL, BOOL, BOOL,
309 const uschar **);
310extern void md5_end(md5 *, const uschar *, int, uschar *);
311extern void md5_mid(md5 *, const uschar *);
312extern void md5_start(md5 *);
313extern void millisleep(int);
314#ifdef WITH_CONTENT_SCAN
315struct mime_boundary_context;
316extern int mime_acl_check(uschar *acl, FILE *f,
317 struct mime_boundary_context *, uschar **, uschar **);
318extern int mime_decode(const uschar **);
319extern ssize_t mime_decode_base64(FILE *, FILE *, uschar *);
320extern int mime_regex(const uschar **);
321extern void mime_set_anomaly(int);
322#endif
323extern uschar *moan_check_errorcopy(uschar *);
324extern BOOL moan_skipped_syntax_errors(uschar *, error_block *, uschar *,
325 BOOL, uschar *);
326extern void moan_smtp_batch(uschar *, const char *, ...) PRINTF_FUNCTION(2,3);
327extern BOOL moan_send_message(uschar *, int, error_block *eblock,
328 header_line *, FILE *, uschar *);
329extern void moan_tell_someone(uschar *, address_item *,
330 const uschar *, const char *, ...) PRINTF_FUNCTION(4,5);
331extern BOOL moan_to_sender(int, error_block *, header_line *, FILE *, BOOL);
332extern void moan_write_from(FILE *);
333extern FILE *modefopen(const uschar *, const char *, mode_t);
334
335extern int open_cutthrough_connection( address_item * addr );
336
337extern uschar *parse_extract_address(uschar *, uschar **, int *, int *, int *,
338 BOOL);
339extern int parse_forward_list(uschar *, int, address_item **, uschar **,
340 const uschar *, uschar *, error_block **);
341extern uschar *parse_find_address_end(uschar *, BOOL);
342extern uschar *parse_find_at(uschar *);
343extern const uschar *parse_fix_phrase(const uschar *, int, uschar *, int);
344extern uschar *parse_message_id(uschar *, uschar **, uschar **);
345extern const uschar *parse_quote_2047(const uschar *, int, uschar *, uschar *, int, BOOL);
346extern uschar *parse_date_time(uschar *str, time_t *t);
347extern int vaguely_random_number(int);
348#ifdef SUPPORT_TLS
349extern int vaguely_random_number_fallback(int);
350#endif
351
352extern BOOL queue_action(uschar *, int, uschar **, int, int);
353extern void queue_check_only(void);
354extern void queue_list(int, uschar **, int);
355extern void queue_count(void);
356extern void queue_run(uschar *, uschar *, BOOL);
357
358extern int random_number(int);
359extern const uschar *rc_to_string(int);
360extern int rda_interpret(redirect_block *, int, uschar *, uschar *,
361 uschar *, uschar *, uschar *, ugid_block *, address_item **,
362 uschar **, error_block **, int *, uschar *);
363extern int rda_is_filter(const uschar *);
364extern BOOL readconf_depends(driver_instance *, uschar *);
365extern void readconf_driver_init(uschar *, driver_instance **,
366 driver_info *, int, void *, int, optionlist *, int);
367extern uschar *readconf_find_option(void *);
368extern void readconf_main(BOOL);
369extern void readconf_options_from_list(optionlist *, unsigned, const uschar *, uschar *);
370extern BOOL readconf_print(uschar *, uschar *, BOOL);
371extern uschar *readconf_printtime(int);
372extern uschar *readconf_readname(uschar *, int, uschar *);
373extern int readconf_readtime(const uschar *, int, BOOL);
374extern void readconf_rest(void);
375extern uschar *readconf_retry_error(const uschar *, const uschar *, int *, int *);
376extern void readconf_save_config(const uschar *);
377extern void read_message_body(BOOL);
378extern void receive_bomb_out(uschar *, uschar *);
379extern BOOL receive_check_fs(int);
380extern BOOL receive_check_set_sender(uschar *);
381extern BOOL receive_msg(BOOL);
382extern int_eximarith_t receive_statvfs(BOOL, int *);
383extern void receive_swallow_smtp(void);
384#ifdef WITH_CONTENT_SCAN
385extern int regex(const uschar **);
386#endif
387extern BOOL regex_match_and_setup(const pcre *, const uschar *, int, int);
388extern const pcre *regex_must_compile(const uschar *, BOOL, BOOL);
389extern void retry_add_item(address_item *, uschar *, int);
390extern BOOL retry_check_address(const uschar *, host_item *, uschar *, BOOL,
391 uschar **, uschar **);
392extern retry_config *retry_find_config(const uschar *, const uschar *, int, int);
393extern BOOL retry_ultimate_address_timeout(uschar *, const uschar *,
394 dbdata_retry *, time_t);
395extern void retry_update(address_item **, address_item **, address_item **);
396extern uschar *rewrite_address(uschar *, BOOL, BOOL, rewrite_rule *, int);
397extern uschar *rewrite_address_qualify(uschar *, BOOL);
398extern header_line *rewrite_header(header_line *,
399 const uschar *, const uschar *,
400 rewrite_rule *, int, BOOL);
401extern uschar *rewrite_one(uschar *, int, BOOL *, BOOL, uschar *,
402 rewrite_rule *);
403extern void rewrite_test(uschar *);
404extern uschar *rfc2047_decode2(uschar *, BOOL, uschar *, int, int *, int *,
405 uschar **);
406extern int route_address(address_item *, address_item **, address_item **,
407 address_item **, address_item **, int);
408extern int route_check_prefix(const uschar *, const uschar *);
409extern int route_check_suffix(const uschar *, const uschar *);
410extern BOOL route_findgroup(uschar *, gid_t *);
411extern BOOL route_finduser(const uschar *, struct passwd **, uid_t *);
412extern BOOL route_find_expanded_group(uschar *, uschar *, uschar *, gid_t *,
413 uschar **);
414extern BOOL route_find_expanded_user(uschar *, uschar *, uschar *,
415 struct passwd **, uid_t *, uschar **);
416extern void route_init(void);
417extern void route_show_supported(FILE *);
418extern void route_tidyup(void);
419
420extern uschar *search_find(void *, uschar *, uschar *, int, const uschar *, int,
421 int, int *);
422extern int search_findtype(const uschar *, int);
423extern int search_findtype_partial(const uschar *, int *, const uschar **, int *,
424 int *);
425extern void *search_open(uschar *, int, int, uid_t *, gid_t *);
426extern void search_tidyup(void);
427extern void set_process_info(const char *, ...) PRINTF_FUNCTION(1,2);
428extern void sha1_end(hctx *, const uschar *, int, uschar *);
429extern void sha1_mid(hctx *, const uschar *);
430extern void sha1_start(hctx *);
431extern int sieve_interpret(uschar *, int, uschar *, uschar *, uschar *,
432 uschar *, address_item **, uschar **);
433extern void sigalrm_handler(int);
434extern BOOL smtp_buffered(void);
435extern void smtp_closedown(uschar *);
436extern void smtp_command_timeout_exit(void);
437extern void smtp_command_sigterm_exit(void);
438extern void smtp_data_timeout_exit(void);
439extern void smtp_data_sigint_exit(void);
440extern uschar *smtp_cmd_hist(void);
441extern int smtp_connect(smtp_connect_args *, const blob *);
442extern int smtp_sock_connect(host_item *, int, int, uschar *,
443 transport_instance * tb, int, const blob *);
444extern int smtp_feof(void);
445extern int smtp_ferror(void);
446extern uschar *smtp_get_connection_info(void);
447extern BOOL smtp_get_interface(uschar *, int, address_item *,
448 uschar **, uschar *);
449extern BOOL smtp_get_port(uschar *, address_item *, int *, uschar *);
450extern int smtp_getc(unsigned);
451extern uschar *smtp_getbuf(unsigned *);
452extern void smtp_get_cache(void);
453extern int smtp_handle_acl_fail(int, int, uschar *, uschar *);
454extern void smtp_log_no_mail(void);
455extern void smtp_message_code(uschar **, int *, uschar **, uschar **, BOOL);
456extern void smtp_proxy_tls(void *, uschar *, size_t, int *, int);
457extern BOOL smtp_read_response(void *, uschar *, int, int, int);
458extern void smtp_reset(void *);
459extern void smtp_respond(uschar *, int, BOOL, uschar *);
460extern void smtp_notquit_exit(uschar *, uschar *, uschar *, ...);
461extern void smtp_port_for_connect(host_item *, int);
462extern void smtp_send_prohibition_message(int, uschar *);
463extern int smtp_setup_msg(void);
464extern BOOL smtp_start_session(void);
465extern int smtp_ungetc(int);
466extern BOOL smtp_verify_helo(void);
467extern int smtp_write_command(void *, int, const char *, ...) PRINTF_FUNCTION(3,4);
468#ifdef WITH_CONTENT_SCAN
469extern int spam(const uschar **);
470extern FILE *spool_mbox(unsigned long *, const uschar *, uschar **);
471#endif
472extern void spool_clear_header_globals(void);
473extern uschar *spool_dname(const uschar *, uschar *);
474extern uschar *spool_fname(const uschar *, const uschar *, const uschar *, const uschar *);
475extern BOOL spool_move_message(uschar *, uschar *, uschar *, uschar *);
476extern int spool_open_datafile(uschar *);
477extern int spool_open_temp(uschar *);
478extern int spool_read_header(uschar *, BOOL, BOOL);
479extern uschar *spool_sname(const uschar *, uschar *);
480extern int spool_write_header(uschar *, int, uschar **);
481extern int stdin_getc(unsigned);
482extern int stdin_feof(void);
483extern int stdin_ferror(void);
484extern int stdin_ungetc(int);
485extern gstring *string_append(gstring *, int, ...) WARN_UNUSED_RESULT;
486extern gstring *string_append_listele(gstring *, uschar, const uschar *) WARN_UNUSED_RESULT;
487extern gstring *string_append_listele_n(gstring *, uschar, const uschar *, unsigned) WARN_UNUSED_RESULT;
488extern gstring *string_append2_listele_n(gstring *, const uschar *, const uschar *, unsigned) WARN_UNUSED_RESULT;
489extern uschar *string_base62(unsigned long int);
490extern gstring *string_cat (gstring *, const uschar * ) WARN_UNUSED_RESULT;
491extern gstring *string_catn(gstring *, const uschar *, int) WARN_UNUSED_RESULT;
492extern int string_compare_by_pointer(const void *, const void *);
493extern uschar *string_copy_dnsdomain(uschar *);
494extern uschar *string_copy_malloc(const uschar *);
495extern uschar *string_copylc(const uschar *);
496extern uschar *string_copynlc(uschar *, int);
497extern uschar *string_dequote(const uschar **);
498extern gstring *string_fmt_append(gstring *, const char *, ...) ALMOST_PRINTF(2,3);
499extern BOOL string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
500extern uschar *string_format_size(int, uschar *);
501extern uschar *string_from_gstring(gstring *);
502extern gstring *string_get(unsigned);
503extern int string_interpret_escape(const uschar **);
504extern int string_is_ip_address(const uschar *, int *);
505#ifdef SUPPORT_I18N
506extern BOOL string_is_utf8(const uschar *);
507#endif
508extern uschar *string_nextinlist(const uschar **, int *, uschar *, int);
509extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
510extern const uschar *string_printing2(const uschar *, BOOL);
511extern uschar *string_split_message(uschar *);
512extern uschar *string_timediff(struct timeval *);
513extern uschar *string_timesince(struct timeval *);
514extern uschar *string_unprinting(uschar *);
515#ifdef SUPPORT_I18N
516extern uschar *string_address_utf8_to_alabel(const uschar *, uschar **);
517extern uschar *string_domain_alabel_to_utf8(const uschar *, uschar **);
518extern uschar *string_domain_utf8_to_alabel(const uschar *, uschar **);
519extern uschar *string_localpart_alabel_to_utf8(const uschar *, uschar **);
520extern uschar *string_localpart_utf8_to_alabel(const uschar *, uschar **);
521#endif
522extern gstring *string_vformat(gstring *, BOOL, const char *, va_list);
523extern int strcmpic(const uschar *, const uschar *);
524extern int strncmpic(const uschar *, const uschar *, int);
525extern uschar *strstric(uschar *, uschar *, BOOL);
526
527#ifdef EXIM_TFO_PROBE
528extern void tfo_probe(void);
529#endif
530extern void timesince(struct timeval * diff, struct timeval * then);
531extern void tls_modify_variables(tls_support *);
532extern uschar *tod_stamp(int);
533
534extern BOOL transport_check_waiting(const uschar *, const uschar *, int, uschar *,
535 BOOL *, oicf, void*);
536extern void transport_init(void);
537extern void transport_do_pass_socket(const uschar *, const uschar *,
538 const uschar *, uschar *, int);
539extern BOOL transport_pass_socket(const uschar *, const uschar *, const uschar *, uschar *,
540 int);
541extern uschar *transport_rcpt_address(address_item *, BOOL);
542extern BOOL transport_set_up_command(const uschar ***, uschar *,
543 BOOL, int, address_item *, uschar *, uschar **);
544extern void transport_update_waiting(host_item *, uschar *);
545extern BOOL transport_write_block(transport_ctx *, uschar *, int, BOOL);
546extern void transport_write_reset(int);
547extern BOOL transport_write_string(int, const char *, ...);
548extern BOOL transport_headers_send(transport_ctx *,
549 BOOL (*)(transport_ctx *, uschar *, int));
550extern void transport_show_supported(FILE *);
551extern BOOL transport_write_message(transport_ctx *, int);
552extern void tree_add_duplicate(uschar *, address_item *);
553extern void tree_add_nonrecipient(uschar *);
554extern void tree_add_unusable(host_item *);
555extern int tree_insertnode(tree_node **, tree_node *);
556extern tree_node *tree_search(tree_node *, const uschar *);
557extern void tree_write(tree_node *, FILE *);
558extern void tree_walk(tree_node *, void (*)(uschar*, uschar*, void*), void *);
559
560#ifdef WITH_CONTENT_SCAN
561extern void unspool_mbox(void);
562#endif
563#ifdef SUPPORT_I18N
564extern void utf8_version_report(FILE *);
565#endif
566
567extern int verify_address(address_item *, FILE *, int, int, int, int,
568 uschar *, uschar *, BOOL *);
569extern int verify_check_dnsbl(int, const uschar **, uschar **);
570extern int verify_check_header_address(uschar **, uschar **, int, int, int,
571 uschar *, uschar *, int, int *);
572extern int verify_check_headers(uschar **);
573extern int verify_check_header_names_ascii(uschar **);
574extern int verify_check_host(uschar **);
575extern int verify_check_notblind(void);
576extern int verify_check_given_host(const uschar **, const host_item *);
577extern int verify_check_this_host(const uschar **, unsigned int *,
578 const uschar*, const uschar *, const uschar **);
579extern address_item *verify_checked_sender(uschar *);
580extern void verify_get_ident(int);
581extern BOOL verify_sender(int *, uschar **);
582extern BOOL verify_sender_preliminary(int *, uschar **);
583extern void version_init(void);
584
585extern BOOL write_chunk(transport_ctx *, uschar *, int);
586extern ssize_t write_to_fd_buf(int, const uschar *, size_t);
587
588
589/* vi: aw
590*/
591/* End of functions.h */
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