1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
9 /* Almost all the global variables are defined together in this one header, so
10 that they are easy to find. However, those that are visible during the
11 compilation of the local_scan() function are defined separately in the
12 local_scan.h header file. */
14 /* First put any specials that are required for some operating systems. */
20 /* We need to be careful about width of int and atomicity in signal handlers,
21 especially with the rise of 64-bit systems breaking older assumptions. But
22 sig_atomic_t comes from signal.h so can't go into mytypes.h without including
23 signal support in local_scan, which seems precipitous. */
24 typedef volatile sig_atomic_t SIGNAL_BOOL;
26 /* Now things that are present only when configured. */
29 extern uschar *opt_perl_startup; /* Startup code for Perl interpreter */
30 extern BOOL opt_perl_at_start; /* Start Perl interpreter at start */
31 extern BOOL opt_perl_started; /* Set once interpreter started */
32 extern BOOL opt_perl_taintmode; /* Enable taint mode in Perl */
36 extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
40 extern uschar *ibase_servers;
44 extern uschar *eldap_ca_cert_dir; /* Directory with CA certificates */
45 extern uschar *eldap_ca_cert_file; /* CA certificate file */
46 extern uschar *eldap_cert_file; /* Certificate file */
47 extern uschar *eldap_cert_key; /* Certificate key file */
48 extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
49 extern uschar *eldap_default_servers; /* List of default servers */
50 extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
51 extern BOOL eldap_start_tls; /* Use STARTTLS */
52 extern int eldap_version; /* LDAP version */
56 extern uschar *mysql_servers; /* List of servers and connect info */
60 extern uschar *oracle_servers; /* List of servers and connect info */
64 extern uschar *pgsql_servers; /* List of servers and connect info */
68 extern uschar *redis_servers; /* List of servers and connect info */
72 extern uschar *sqlite_dbfile; /* Filname for database */
73 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
76 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
77 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
80 #ifdef ALLOW_INSECURE_TAINTED_DATA
81 extern BOOL allow_insecure_tainted_data;
84 /* These variables are outside the #ifdef because it keeps the code less
85 cluttered in several places (e.g. during logging) if we can always refer to
86 them. Also, the tls_ variables are now always visible. */
89 client_conn_ctx active; /* fd/socket when in a TLS session, and ptr to TLS context */
90 int bits; /* bits used in TLS session */
91 BOOL certificate_verified; /* Client certificate verified */
93 BOOL dane_verified; /* ... via DANE */
94 int tlsa_usage; /* TLSA record(s) usage */
96 uschar *cipher; /* Cipher used */
97 const uschar *cipher_stdname; /* Cipher used, RFC version */
98 const uschar *ver; /* TLS version */
100 BOOL on_connect; /* For older MTAs that don't STARTTLS */
101 uschar *on_connect_ports; /* Ports always tls-on-connect */
102 void *ourcert; /* Certificate we presented, binary */
103 void *peercert; /* Certificate of peer, binary */
104 uschar *peerdn; /* DN from peer */
105 uschar *sni; /* Server Name Indication */
106 uschar *channelbinding; /* b64'd data identifying channel, for authenticators */
108 OCSP_NOT_REQ=0, /* not requested */
109 OCSP_NOT_RESP, /* no response to request */
110 OCSP_VFY_NOT_TRIED, /* response not verified */
111 OCSP_FAILED, /* verify failed */
112 OCSP_VFIED /* verified */
113 } ocsp; /* Stapled OCSP status */
114 #ifndef DISABLE_TLS_RESUME
115 unsigned resumption; /* Session resumption */
116 BOOL host_resumable:1;
117 BOOL ticket_received:1;
119 BOOL verify_override:1; /* certificate_verified only due to tls_try_verify_hosts */
120 BOOL ext_master_secret:1; /* extended-master-secret was used */
122 extern tls_support tls_in;
123 extern tls_support tls_out;
126 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
127 extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
128 extern uschar *hosts_require_alpn; /* Mandatory ALPN successful nogitiation */
129 extern uschar *openssl_options; /* OpenSSL compatibility options */
130 extern const pcre2_code *regex_STARTTLS; /* For recognizing STARTTLS settings */
131 extern uschar *tls_alpn; /* ALPN names acceptable */
132 extern uschar *tls_certificate; /* Certificate file */
133 extern uschar *tls_crl; /* CRL File */
134 extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
135 extern uschar *tls_dhparam; /* DH param file */
136 extern uschar *tls_eccurve; /* EC curve */
137 # ifndef DISABLE_OCSP
138 extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
140 extern uschar *tls_privatekey; /* Private key file */
141 extern BOOL tls_remember_esmtp; /* For YAEB */
142 extern uschar *tls_require_ciphers; /* So some can be avoided */
143 # ifndef DISABLE_TLS_RESUME
144 extern uschar *tls_resumption_hosts; /* TLS session resumption */
146 extern uschar *tls_try_verify_hosts; /* Optional client verification */
147 extern uschar *tls_verify_certificates;/* Path for certificates to check */
148 extern uschar *tls_verify_hosts; /* Mandatory client verification */
149 extern int tls_watch_fd; /* for inotify of creds files */
150 extern time_t tls_watch_trigger_time; /* non-0: triggered */
152 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
154 extern uschar *dsn_envid; /* DSN envid string */
155 extern int dsn_ret; /* DSN ret type*/
156 extern const pcre2_code *regex_DSN; /* For recognizing DSN settings */
157 extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
159 /* Input-reading functions for messages, so we can use special ones for
162 extern int (*lwr_receive_getc)(unsigned);
163 extern uschar * (*lwr_receive_getbuf)(unsigned *);
164 extern int (*lwr_receive_ungetc)(int);
165 extern int (*receive_getc)(unsigned);
166 extern uschar * (*receive_getbuf)(unsigned *);
167 extern void (*receive_get_cache)(unsigned);
168 extern int (*receive_ungetc)(int);
169 extern int (*receive_feof)(void);
170 extern int (*receive_ferror)(void);
171 extern BOOL (*receive_smtp_buffered)(void);
174 /* For clearing, saving, restoring address expansion variables. We have to have
175 the size of this vector set explicitly, because it is referenced from more than
178 extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
180 /* Flags for which we don't need an address ever so can use a bitfield */
182 extern struct global_flags {
183 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
184 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
185 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
186 BOOL address_test_mode :1; /* True for -bt */
187 BOOL admin_user :1; /* True if caller can do admin */
188 BOOL allow_auth_unadvertised :1; /* As it says */
189 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
190 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
191 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
193 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
194 BOOL bdat_readers_wanted :1; /* BDAT-handling to be pushed on readfunc stack */
196 BOOL chunking_offered :1;
197 BOOL config_changed :1; /* True if -C used */
198 BOOL continue_more :1; /* Flag more addresses waiting */
200 BOOL daemon_listen :1; /* True if listening required */
201 BOOL debug_daemon :1; /* Debug the daemon process only */
202 BOOL deliver_firsttime :1; /* True for first delivery attempt */
203 BOOL deliver_force :1; /* TRUE if delivery was forced */
204 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
205 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
206 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
207 BOOL deliver_selectstring_regex :1; /* String is regex */
208 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
209 BOOL disable_callout_flush :1; /* Don't flush before callouts */
210 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
211 BOOL disable_logging :1; /* Disables log writing when TRUE */
213 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
214 BOOL dkim_init_done :1; /* lazy-init status */
217 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
218 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
219 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
221 BOOL dont_deliver :1; /* TRUE for -N option */
222 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
224 BOOL enable_dollar_recipients :1; /* Make $recipients available */
225 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
227 BOOL filter_running :1; /* TRUE while running a filter */
229 BOOL header_rewritten :1; /* TRUE if header changed by router */
230 BOOL helo_verified :1; /* True if HELO verified */
231 BOOL helo_verify_failed :1; /* True if attempt failed */
232 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
233 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
235 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
236 BOOL is_inetd :1; /* True for inetd calls */
238 BOOL local_error_message :1; /* True if handling one of these */
239 BOOL log_testing_mode :1; /* TRUE in various testing modes */
241 #ifdef WITH_CONTENT_SCAN
242 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
244 BOOL no_multiline_responses :1; /* For broken clients */
246 BOOL parse_allow_group :1; /* Allow group syntax */
247 BOOL parse_found_group :1; /* In the middle of a group */
248 BOOL pipelining_enable :1; /* As it says */
249 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
250 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
253 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
254 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
255 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
256 BOOL queue_run_force :1; /* TRUE to force during queue run */
257 BOOL queue_run_local :1; /* Local deliveries only in queue run */
258 BOOL queue_running :1; /* TRUE for queue running process and */
259 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
261 BOOL really_exim :1; /* FALSE in utilities */
262 BOOL receive_call_bombout :1; /* Flag for crashing log */
263 BOOL recipients_discarded :1; /* By an ACL */
264 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
266 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
267 BOOL sender_address_forced :1; /* Set by -f */
268 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
269 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
270 BOOL sender_local :1; /* TRUE for local senders */
271 BOOL sender_name_forced :1; /* Set by -F */
272 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
273 BOOL smtp_authenticated :1; /* Sending client has authenticated */
274 #ifndef DISABLE_PIPE_CONNECT
275 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
276 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
277 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
279 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
280 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
281 BOOL smtp_in_quit :1; /* server noted QUIT command */
282 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
283 BOOL submission_mode :1; /* Can be forced from ACL */
284 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
285 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
286 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
287 BOOL system_filtering :1; /* TRUE when running system filter */
289 BOOL taint_check_slow :1; /* malloc/mmap are not returning distinct ranges */
290 BOOL testsuite_delays :1; /* interprocess sequencing delays, under testsuite */
291 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
292 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
293 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
294 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
295 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
296 BOOL timestamps_utc :1; /* Use UTC for all times */
297 BOOL transport_filter_timed_out :1; /* True if it did */
298 BOOL trusted_caller :1; /* Caller is trusted */
299 BOOL trusted_config :1; /* Configuration file is trusted */
303 /* General global variables */
305 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
306 extern uschar *add_environment; /* List of environment variables to add */
307 extern header_line *acl_added_headers; /* Headers added by an ACL */
308 extern tree_node *acl_anchor; /* Tree of named ACLs */
309 extern uschar *acl_arg[9]; /* Argument to ACL call */
310 extern int acl_narg; /* Number of arguments to ACL call */
311 extern int acl_level; /* Nesting depth and debug indent */
312 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
313 #ifdef WITH_CONTENT_SCAN
314 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
316 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
317 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
318 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
319 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
320 extern uschar *acl_smtp_data; /* ACL run after DATA received */
322 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
323 const extern pcre2_code *regex_PRDR; /* For recognizing PRDR settings */
326 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
328 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
329 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
330 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
331 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
332 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
333 #ifdef WITH_CONTENT_SCAN
334 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
336 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
337 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
338 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
339 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
340 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
341 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
342 extern tree_node *acl_var_c; /* ACL connection variables */
343 extern tree_node *acl_var_m; /* ACL message variables */
344 extern uschar *acl_verify_message; /* User message for verify failure */
345 extern string_item *acl_warn_logged; /* Logged lines */
346 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
347 extern uschar *acl_wherenames[]; /* Names for messages */
348 extern address_item *addr_duplicate; /* Duplicate address list */
349 extern address_item address_defaults; /* Default data for address item */
350 extern uschar *address_file; /* Name of file when delivering to one */
351 extern uschar *address_pipe; /* Pipe command when delivering to one */
352 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
353 extern int addresslist_count; /* Number defined */
354 extern gid_t *admin_groups; /* List of admin groups */
355 extern BOOL allow_domain_literals; /* As it says */
356 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
357 #ifdef EXPERIMENTAL_ARC
358 extern struct arc_set *arc_received; /* highest ARC instance evaluation struct */
359 extern int arc_received_instance; /* highest ARC instance number in headers */
360 extern int arc_oldest_pass; /* lowest passing instance number in headers */
361 extern const uschar *arc_state; /* verification state */
362 extern const uschar *arc_state_reason;
364 extern BOOL allow_utf8_domains; /* For experimenting */
365 extern uschar *authenticated_fail_id; /* ID that failed authentication */
366 extern uschar *authenticated_id; /* ID that was authenticated */
367 extern uschar *authenticated_sender; /* From AUTH on MAIL */
368 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
369 extern uschar *auth_advertise_hosts; /* Only advertise to these */
370 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
371 extern auth_instance *auths; /* Chain of instantiated auths */
372 extern auth_instance auth_defaults; /* Default values */
373 extern uschar *auth_defer_msg; /* Error message for log */
374 extern uschar *auth_defer_user_msg; /* Error message for user */
375 extern const uschar *auth_vars[]; /* $authn variables */
376 extern int auto_thaw; /* Auto-thaw interval */
377 #ifdef WITH_CONTENT_SCAN
378 extern int av_failed; /* TRUE if the AV process failed */
379 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
382 extern uschar *base62_chars; /* Table of base-62 characters */
383 extern uschar *bi_command; /* Command for -bi option */
384 extern uschar *big_buffer; /* Used for various temp things */
385 extern int big_buffer_size; /* Current size (can expand) */
386 #ifdef EXPERIMENTAL_BRIGHTMAIL
387 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
388 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
389 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
390 extern uschar *bmi_config_file; /* Brightmail config file */
391 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
392 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
393 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
395 extern int bsmtp_transaction_linecount; /* Start of last transaction */
396 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
397 extern uschar *bounce_message_file; /* Template file */
398 extern uschar *bounce_message_text; /* One-liner */
399 extern uschar *bounce_recipient; /* When writing an errmsg */
400 extern BOOL bounce_return_body; /* Include body in returned message */
401 extern int bounce_return_linesize_limit; /* Max line length in return */
402 extern BOOL bounce_return_message; /* Include message in bounce */
403 extern int bounce_return_size_limit; /* Max amount to return */
404 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
406 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
407 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
408 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
409 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
410 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
411 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
412 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
413 extern int check_log_inodes; /* Minimum for message acceptance */
414 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
415 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
416 extern int check_spool_inodes; /* Minimum for message acceptance */
417 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
418 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
419 extern unsigned chunking_datasize;
420 extern unsigned chunking_data_left;
421 extern chunking_state_t chunking_state;
422 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
423 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
424 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
425 extern int clmacro_count; /* Number of command line macros */
426 extern uschar *clmacros[]; /* Copy of them, for re-exec */
427 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
428 extern int connection_max_messages;/* Max down one SMTP connection */
429 extern FILE *config_file; /* Configuration file */
430 extern const uschar *config_filename; /* Configuration file name */
431 extern gid_t config_gid; /* Additional group owner */
432 extern int config_lineno; /* Line number */
433 extern uschar *config_main_filelist; /* List of possible config files */
434 extern uschar *config_main_filename; /* File name actually used */
435 extern uschar *config_main_directory; /* Directory where the main config file was found */
436 extern uid_t config_uid; /* Additional owner */
437 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
438 extern BOOL continue_proxy_dane; /* proxied conn is DANE */
439 extern uschar *continue_proxy_sni; /* proxied conn SNI */
440 extern uschar *continue_hostname; /* Host for continued delivery */
441 extern uschar *continue_host_address; /* IP address for ditto */
442 extern int continue_sequence; /* Sequence num for continued delivery */
443 extern uschar *continue_transport; /* Transport for continued delivery */
444 #ifdef EXPERIMENTAL_ESMTP_LIMITS
445 extern unsigned continue_limit_mail; /* Peer advertised limit */
446 extern unsigned continue_limit_rcpt;
447 extern unsigned continue_limit_rcptdom;
451 extern uschar *csa_status; /* Client SMTP Authorization result */
454 unsigned callout_hold_only:1; /* Conn is only for verify callout */
455 unsigned delivery:1; /* When to attempt */
456 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
457 unsigned is_tls:1; /* Conn has TLS active */
458 client_conn_ctx cctx; /* Open connection */
459 int nrcpt; /* Count of addresses */
460 uschar * transport; /* Name of transport */
461 uschar * interface; /* (address of) */
462 uschar * snd_ip; /* sending_ip_address */
463 int snd_port; /* sending_port */
464 unsigned peer_options; /* smtp_peer_options */
465 host_item host; /* Host used */
466 address_item addr; /* (Chain of) addresses */
468 extern cut_t cutthrough; /* Deliver-concurrently */
470 extern int daemon_notifier_fd; /* Unix socket for notifications */
471 extern uschar *daemon_smtp_port; /* Can be a list of ports */
472 extern int daemon_startup_retries; /* Number of times to retry */
473 extern int daemon_startup_sleep; /* Sleep between retries */
475 #ifdef EXPERIMENTAL_DCC
476 extern BOOL dcc_direct_add_header; /* directly add header */
477 extern uschar *dcc_header; /* dcc header */
478 extern uschar *dcc_result; /* dcc result */
479 extern uschar *dccifd_address; /* address of the dccifd daemon */
480 extern uschar *dccifd_options; /* options for the dccifd daemon */
483 extern int debug_fd; /* The fd for debug_file */
484 extern FILE *debug_file; /* Where to write debugging info */
485 extern int debug_notall[]; /* Debug options excluded from +all */
486 extern bit_table debug_options[]; /* Table of debug options */
487 extern int debug_options_count; /* Size of table */
488 extern BOOL debug_store; /* Do extra checks on store_reset */
489 extern int delay_warning[]; /* Times between warnings */
490 extern uschar *delay_warning_condition; /* Condition string for warnings */
491 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
493 extern uschar *deliver_address_data; /* Arbitrary data for an address */
494 extern int deliver_datafile; /* FD for data part of message */
495 extern const uschar *deliver_domain; /* The local domain for delivery */
496 extern uschar *deliver_domain_data; /* From domain lookup */
497 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
498 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
499 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
500 extern time_t deliver_frozen_at; /* Time of freezing */
501 extern uschar *deliver_home; /* Home directory for pipes */
502 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
503 /* Remote host for filter */
504 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
505 extern int deliver_host_port; /* Address for remote delivery filter */
506 extern uschar *deliver_in_buffer; /* Buffer for copying file */
507 extern ino_t deliver_inode; /* Inode for appendfile */
508 extern uschar *deliver_localpart; /* The local part for delivery */
509 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
510 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
511 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
512 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
513 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
514 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
515 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
516 extern uschar *deliver_out_buffer; /* Buffer for copying file */
517 extern int deliver_queue_load_max; /* Different value for queue running */
518 extern address_item *deliver_recipients; /* Current set of addresses */
519 extern uschar *deliver_selectstring; /* For selecting by recipient */
520 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
521 #ifdef ENABLE_DISABLE_FSYNC
522 extern BOOL disable_fsync; /* Not for normal use */
524 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
527 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
528 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
529 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
530 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
531 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
532 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
533 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
534 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
535 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
536 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
537 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
538 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
539 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
540 extern uschar *dkim_verify_status; /* result for this signature */
541 extern uschar *dkim_verify_reason; /* result for this signature */
544 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
545 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
546 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
547 extern uschar *dmarc_status; /* Expansion variable, one word value */
548 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
549 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
550 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
553 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
554 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
555 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
556 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
557 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
559 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
561 extern int dns_retrans; /* Retransmission time setting */
562 extern int dns_retry; /* Number of retries */
563 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
564 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
565 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
566 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
567 extern uschar *dnslist_domain; /* DNS (black) list domain */
568 extern uschar *dnslist_matched; /* DNS (black) list matched key */
569 extern uschar *dnslist_text; /* DNS (black) list text message */
570 extern uschar *dnslist_value; /* DNS (black) list IP address */
571 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
572 extern int domainlist_count; /* Number defined */
574 /* This option is now a no-opt, retained for compatibility */
575 extern BOOL drop_cr; /* For broken local MUAs */
577 extern uschar *dsn_from; /* From: string for DSNs */
579 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
580 extern int errno_quota; /* Quota errno in this OS */
581 extern int error_handling; /* Error handling style */
582 extern uschar *errors_copy; /* For taking copies of errors */
583 extern uschar *errors_reply_to; /* Reply-to for error messages */
584 extern int errors_sender_rc; /* Return after message to sender*/
586 #ifndef DISABLE_EVENT
587 extern uschar *event_action; /* expansion for delivery events */
588 extern uschar *event_data; /* event data */
589 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
590 extern const uschar *event_name; /* event classification */
593 extern gid_t exim_gid; /* To be used with exim_uid */
594 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
595 extern uschar *exim_path; /* Path to exec exim */
596 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
597 extern uid_t exim_uid; /* Non-root uid for exim */
598 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
599 extern int expand_level; /* Nesting depth; indent for debug */
600 extern int expand_forbid; /* RDO flags for forbidding things */
601 extern int expand_nlength[]; /* Lengths of numbered strings */
602 extern int expand_nmax; /* Max numerical value */
603 extern const uschar *expand_nstring[]; /* Numbered strings */
604 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
605 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
607 extern int fake_response; /* Fake FAIL or DEFER response to data */
608 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
609 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
610 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
611 extern int filter_test; /* Filter test type */
612 extern uschar *filter_test_sfile; /* System filter test file */
613 extern uschar *filter_test_ufile; /* User filter test file */
614 extern uschar *filter_thisaddress; /* For address looping */
615 extern int finduser_retries; /* Retry count for getpwnam() */
616 extern uid_t fixed_never_users[]; /* Can't be overridden */
617 extern uschar *freeze_tell; /* Message on (some) freezings */
618 extern uschar *freeze_tell_config; /* The configured setting */
619 extern uschar *fudged_queue_times; /* For use in test harness */
621 extern uschar *gecos_name; /* To be expanded when pattern matches */
622 extern uschar *gecos_pattern; /* Pattern to match */
623 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
625 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
626 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
627 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
628 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
629 extern int header_insert_maxlen; /* Max for inserting headers */
630 extern int header_maxsize; /* Max total length for header */
631 extern int header_line_maxsize; /* Max for an individual line */
632 extern header_name header_names[]; /* Table of header names */
633 extern int header_names_size; /* Number of entries */
634 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
635 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
636 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
637 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
638 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
639 extern const uschar *hex_digits; /* Used in several places */
640 extern uschar *hold_domains; /* Hold up deliveries to these */
641 extern uschar *host_data; /* Obtained from lookup in ACL */
642 extern uschar *host_lookup; /* For which IP addresses are always looked up */
643 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
644 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
645 extern uschar *host_lookup_order; /* Order of host lookup types */
646 extern uschar *host_lookup_msg; /* Text for why it failed */
647 extern int host_number; /* For sharing spools */
648 extern uschar *host_number_string; /* For expanding */
649 extern uschar *hosts_require_helo; /* check for HELO/EHLO before MAIL */
650 extern uschar *host_reject_connection; /* Reject these hosts */
651 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
652 extern int hostlist_count; /* Number defined */
653 extern uschar *hosts_connection_nolog; /* Limits the logging option */
654 extern uschar *hosts_treat_as_local; /* For routing */
656 extern int ignore_bounce_errors_after; /* Keep them for this time. */
657 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
658 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
659 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
660 extern uschar *initial_cwd; /* The directory we where in at startup */
661 extern uschar *iterate_item; /* Item from iterate list */
663 extern int journal_fd; /* Fd for journal file */
665 extern uschar *keep_environment; /* Whitelist for environment variables */
666 extern int keep_malformed; /* Time to keep malformed messages */
668 extern uschar *eldap_dn; /* Where LDAP DNs are left */
669 #ifdef EXPERIMENTAL_ESMTP_LIMITS
670 extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
672 extern int load_average; /* Most recently read load average */
673 extern BOOL local_from_check; /* For adding Sender: (global value) */
674 extern uschar *local_from_prefix; /* Permitted prefixes */
675 extern uschar *local_from_suffix; /* Permitted suffixes */
676 extern uschar *local_interfaces; /* For forcing specific interfaces */
677 #ifdef HAVE_LOCAL_SCAN
678 extern uschar *local_scan_data; /* Text returned by local_scan() */
679 extern optionlist local_scan_options[];/* Option list for local_scan() */
680 extern int local_scan_options_count; /* Size of the list */
681 extern int local_scan_timeout; /* Timeout for local_scan() */
683 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
684 extern gid_t local_user_gid; /* As it says; may be set in routers */
685 extern uid_t local_user_uid; /* As it says; may be set in routers */
686 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
687 extern int localpartlist_count; /* Number defined */
688 extern uschar *log_buffer; /* For constructing log entries */
689 extern int log_default[]; /* Initialization list for log_selector */
690 extern uschar *log_file_path; /* If unset, use default */
691 extern int log_notall[]; /* Log options excluded from +all */
692 extern bit_table log_options[]; /* Table of options */
693 extern int log_options_count; /* Size of table */
694 extern int log_reject_target; /* Target log for ACL rejections */
695 extern unsigned int log_selector[]; /* Bit map of logging options */
696 extern uschar *log_selector_string; /* As supplied in the config */
697 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
698 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
699 extern uschar *login_sender_address; /* The actual sender address */
700 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
701 extern int lookup_list_count; /* Number of entries in the list */
702 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
703 extern int lookup_open_max; /* Max lookup files to cache */
704 extern uschar *lookup_value; /* Value looked up from file */
706 extern macro_item *macros; /* Configuration macros */
707 extern macro_item *macros_user; /* Non-builtin configuration macros */
708 extern macro_item *mlast; /* Last item in macro list */
709 extern uschar *mailstore_basename; /* For mailstore deliveries */
710 #ifdef WITH_CONTENT_SCAN
711 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
713 extern int max_received_linelength;/* What it says */
714 extern int max_username_length; /* For systems with broken getpwnam() */
715 extern int message_age; /* In seconds */
716 extern uschar *message_body; /* Start of message body for filter */
717 extern uschar *message_body_end; /* End of message body for filter */
718 extern BOOL message_body_newlines; /* FALSE => remove newlines */
719 extern int message_body_size; /* Sic */
720 extern int message_body_visible; /* Amount visible in message_body */
721 extern int message_ended; /* State of message reading and how ended */
722 extern uschar *message_headers; /* When built */
723 extern uschar message_id_option[]; /* -E<message-id> for use as option */
724 extern uschar *message_id_external; /* External form of following */
725 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
726 extern uschar *message_id_text; /* Expanded to form message_id */
727 extern int message_linecount; /* As it says */
728 extern BOOL message_logs; /* TRUE to write message logs */
729 extern int message_size; /* Size of message */
730 extern uschar *message_size_limit; /* As it says */
732 extern BOOL message_smtputf8; /* Internationalized mail handling */
733 extern int message_utf8_downconvert; /* convert from utf8 */
734 const extern pcre2_code *regex_UTF8; /* For recognizing SMTPUTF8 settings */
736 extern uschar message_subdir[]; /* Subdirectory for messages */
737 extern uschar *message_reference; /* Reference for error messages */
739 /* MIME ACL expandables */
740 #ifdef WITH_CONTENT_SCAN
741 extern int mime_anomaly_level;
742 extern const uschar *mime_anomaly_text;
743 extern uschar *mime_boundary;
744 extern uschar *mime_charset;
745 extern uschar *mime_content_description;
746 extern uschar *mime_content_disposition;
747 extern uschar *mime_content_id;
748 extern unsigned int mime_content_size;
749 extern uschar *mime_content_transfer_encoding;
750 extern uschar *mime_content_type;
751 extern uschar *mime_decoded_filename;
752 extern uschar *mime_filename;
753 extern int mime_is_multipart;
754 extern int mime_is_coverletter;
755 extern int mime_is_rfc822;
756 extern int mime_part_count;
759 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
761 extern uid_t *never_users; /* List of uids never to be used */
762 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
764 extern const int on; /* For setsockopt */
765 extern const int off;
767 extern optionlist optionlist_auths[]; /* These option lists are made */
768 extern int optionlist_auths_size; /* global so that readconf can */
769 extern optionlist optionlist_routers[]; /* see them for printing out */
770 extern int optionlist_routers_size; /* the options. */
771 extern optionlist optionlist_transports[];
772 extern int optionlist_transports_size;
774 extern uid_t original_euid; /* Original effective uid */
775 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
776 extern uschar *originator_login; /* Login of same */
777 extern uschar *originator_name; /* Full name of same */
778 extern uid_t originator_uid; /* Uid of ditto */
779 extern uschar *override_local_interfaces; /* Value of -oX argument */
780 extern uschar *override_pid_file_path; /* Value of -oP argument */
782 extern pcre2_general_context * pcre_gen_ctx; /* pcre memory management */
783 extern pcre2_compile_context * pcre_cmp_ctx;
784 extern pcre2_match_context * pcre_mtc_ctx;
786 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
787 extern uschar *pid_file_path; /* For writing daemon pids */
788 #ifndef DISABLE_PIPE_CONNECT
789 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
791 extern uschar *pipelining_advertise_hosts; /* As it says */
793 extern BOOL prdr_enable; /* As it says */
794 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
796 extern BOOL preserve_message_logs; /* Save msglog files */
797 extern uschar *primary_hostname; /* Primary name of this computer */
798 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
799 extern uschar *process_info; /* For SIGUSR1 output */
800 extern int process_info_len;
801 extern uschar *process_log_path; /* Alternate path */
802 extern const uschar *process_purpose; /* for debug output */
803 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
805 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
806 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
807 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
808 extern int proxy_external_port; /* Port on remote interface of proxy */
809 extern uschar *proxy_local_address; /* IP of local interface of proxy */
810 extern int proxy_local_port; /* Port on local interface of proxy */
811 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
812 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
815 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
816 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
817 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
819 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
820 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
821 extern uschar *queue_domains; /* Queue these domains */
822 #ifndef DISABLE_QUEUE_RAMP
823 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
825 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
826 /* immediate children */
827 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
828 extern int queue_run_pipe; /* Pipe for synchronizing */
829 extern int queue_interval; /* Queue running interval */
830 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
831 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
832 extern BOOL queue_only; /* TRUE to disable immediate delivery */
833 extern int queue_only_load; /* Max load before auto-queue */
834 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
835 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
836 extern BOOL queue_only_override; /* Allow override from command line */
837 extern BOOL queue_run_in_order; /* As opposed to random */
838 extern uschar *queue_run_max; /* Max queue runners */
839 extern unsigned queue_size; /* items in queue */
840 extern time_t queue_size_next; /* next time to evaluate queue_size */
841 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
843 extern unsigned int random_seed; /* Seed for random numbers */
844 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
845 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
846 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
847 extern uschar *raw_active_hostname; /* Pre-expansion */
848 extern uschar *raw_sender; /* Before rewriting */
849 extern uschar **raw_recipients; /* Before rewriting */
850 extern int raw_recipients_count;
851 extern const uschar * rc_names[]; /* Mostly for debug output */
852 extern int rcpt_count; /* Count of RCPT commands in a message */
853 extern int rcpt_fail_count; /* Those that got 5xx */
854 extern int rcpt_defer_count; /* Those that got 4xx */
855 extern gid_t real_gid; /* Real gid */
856 extern uid_t real_uid; /* Real user running program */
857 extern int receive_linecount; /* Mainly for BSMTP errors */
858 extern int receive_messagecount; /* Mainly for BSMTP errors */
859 extern int receive_timeout; /* For non-SMTP acceptance */
860 extern int received_count; /* Count of Received: headers */
861 extern uschar *received_for; /* For "for" field */
862 extern uschar *received_header_text; /* Definition of Received: header */
863 extern int received_headers_max; /* Max count of Received: headers */
864 extern struct timeval received_time; /* Time the message started to be received */
865 extern struct timeval received_time_complete; /* Time the message completed reception */
866 extern uschar *recipient_data; /* lookup data for recipients */
867 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
868 extern uschar *recipient_verify_failure; /* What went wrong */
869 extern int recipients_list_max; /* Maximum number fitting in list */
870 extern int recipients_max; /* Max permitted */
871 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
872 extern const pcre2_code *regex_AUTH; /* For recognizing AUTH settings */
873 extern const pcre2_code *regex_check_dns_names; /* For DNS name checking */
874 extern const pcre2_code *regex_From; /* For recognizing "From_" lines */
875 extern const pcre2_code *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
876 extern const pcre2_code *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
877 #ifdef EXPERIMENTAL_ESMTP_LIMITS
878 extern const pcre2_code *regex_LIMITS; /* For recognizing LIMITS */
880 extern const pcre2_code *regex_PIPELINING; /* For recognizing PIPELINING */
881 extern const pcre2_code *regex_SIZE; /* For recognizing SIZE settings */
882 #ifndef DISABLE_PIPE_CONNECT
883 extern const pcre2_code *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
885 extern const pcre2_code *regex_ismsgid; /* Compiled r.e. for message ID */
886 extern const pcre2_code *regex_smtp_code; /* For recognizing SMTP codes */
887 extern const uschar *regex_vars[]; /* $regexN variables */
888 #ifdef WHITELIST_D_MACROS
889 extern const pcre2_code *regex_whitelisted_macro; /* For -D macro values */
891 #ifdef WITH_CONTENT_SCAN
892 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
894 extern int remote_delivery_count; /* Number of remote addresses */
895 extern int remote_max_parallel; /* Maximum parallel delivery */
896 extern uschar *remote_sort_domains; /* Remote domain sorting order */
897 extern retry_config *retries; /* Chain of retry config information */
898 extern int retry_data_expire; /* When to expire retry data */
899 extern int retry_interval_max; /* Absolute maximum */
900 extern int retry_maximum_timeout; /* The maximum timeout */
901 extern uschar *return_path; /* Return path for a message */
902 extern BOOL return_path_remove; /* Remove return-path headers */
903 extern int rewrite_existflags; /* Indicate which headers have rewrites */
904 extern uschar *rfc1413_hosts; /* RFC hosts */
905 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
906 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
907 extern uid_t root_gid; /* The gid for root */
908 extern uid_t root_uid; /* The uid for root */
909 extern router_info routers_available[];/* Vector of available routers */
910 extern router_instance *routers; /* Chain of instantiated routers */
911 extern router_instance router_defaults;/* Default values */
912 extern uschar *router_name; /* Name of router last started */
913 extern tree_node *router_var; /* Variables set by router */
914 extern ip_address_item *running_interfaces; /* Host's running interfaces */
915 extern uschar *running_status; /* Flag string for testing */
916 extern int runrc; /* rc from ${run} */
918 extern uschar *search_error_message; /* Details of lookup problem */
919 extern uschar *self_hostname; /* Self host after routing->directors */
920 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
921 extern uschar *sender_address_data; /* address_data from sender verify */
922 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
923 extern uschar *sender_data; /* lookup result for senders */
924 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
925 extern uschar *sender_fullhost; /* Sender host name + address */
926 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
927 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
928 extern uschar **sender_host_aliases; /* Points to list of alias names */
929 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
930 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
931 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
932 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
933 extern uschar *sender_rate; /* Sender rate computed by ACL */
934 extern uschar *sender_rate_limit; /* Configured rate limit */
935 extern uschar *sender_rate_period; /* Configured smoothing period */
936 extern uschar *sender_rcvhost; /* Host data for Received: */
937 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
938 extern uschar *sender_verify_failure; /* What went wrong */
939 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
940 extern address_item *sender_verified_failed; /* The one that caused denial */
941 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
942 extern int sending_port; /* Port of outgoing interface */
943 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
944 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
945 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
946 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
947 extern int smtp_accept_count; /* Count of connections */
948 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
949 extern int smtp_accept_max; /* Max SMTP connections */
950 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
951 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
952 extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
953 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
954 extern int smtp_accept_queue; /* Queue after so many connections */
955 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
956 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
957 extern uschar *smtp_active_hostname; /* Hostname for this message */
958 extern int smtp_backlog_monitor; /* listen backlog level to log */
959 extern uschar *smtp_banner; /* Banner string (to be expanded) */
960 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
961 extern int smtp_ch_index; /* Index in smtp_connection_had */
962 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
963 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
964 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
965 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
966 extern int smtp_connect_backlog; /* Max backlog permitted */
967 extern double smtp_delay_mail; /* Current MAIL delay */
968 extern double smtp_delay_rcpt; /* Current RCPT delay */
969 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
970 extern uschar *smtp_etrn_command; /* Command to run */
971 extern BOOL smtp_etrn_serialize; /* Only one at once */
972 extern FILE *smtp_in; /* Incoming SMTP input file */
973 extern int smtp_listen_backlog; /* Current listener socket backlog, if monitored */
974 extern int smtp_load_reserve; /* Only from reserved if load > this */
975 extern int smtp_mailcmd_count; /* Count of MAIL commands */
976 extern int smtp_mailcmd_max; /* Limit for MAIL commands */
977 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
978 extern int smtp_max_unknown_commands; /* As it says */
979 extern uschar *smtp_names[]; /* decode for command codes */
980 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
981 extern FILE *smtp_out; /* Incoming SMTP output file */
982 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
983 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
984 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
985 extern uschar *smtp_read_error; /* Message for SMTP input error */
986 extern int smtp_receive_timeout; /* Applies to each received line */
987 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
988 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
989 extern BOOL smtp_return_error_details; /* TRUE to return full info */
990 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
991 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
992 extern int smtp_rlm_limit; /* Max delay */
993 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
994 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
995 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
996 extern int smtp_rlr_limit; /* Max delay */
997 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
998 extern unsigned smtp_peer_options; /* Global flags for passed connections */
999 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
1001 extern uschar *smtputf8_advertise_hosts; /* ingress control */
1004 #ifdef WITH_CONTENT_SCAN
1005 extern uschar *spamd_address; /* address for the spamassassin daemon */
1006 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
1007 extern uschar *spam_report; /* the spamd report (multiline) */
1008 extern uschar *spam_action; /* the spamd recommended-action */
1009 extern uschar *spam_score; /* the spam score (float) */
1010 extern uschar *spam_score_int; /* spam_score * 10 (int) */
1013 extern uschar *spf_guess; /* spf best-guess record */
1014 extern uschar *spf_header_comment; /* spf header comment */
1015 extern uschar *spf_received; /* Received-SPF: header */
1016 extern uschar *spf_result; /* spf result in string form */
1017 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
1018 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
1019 extern uschar *spf_smtp_comment_template;
1020 /* template to construct the spf comment by libspf2 */
1022 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1023 extern FILE *spool_data_file; /* handle for -D file */
1024 extern uschar *spool_directory; /* Name of spool directory */
1025 extern BOOL spool_wireformat; /* can write wireformat -D files */
1026 #ifdef EXPERIMENTAL_SRS_ALT
1027 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
1028 extern uschar *srs_db_address; /* SRS db address */
1029 extern uschar *srs_db_key; /* SRS db key */
1030 extern int srs_hashlength; /* SRS hash length */
1031 extern int srs_hashmin; /* SRS minimum hash length */
1032 extern int srs_maxage; /* SRS max age */
1033 extern uschar *srs_orig_sender; /* SRS original sender */
1034 extern uschar *srs_orig_recipient; /* SRS original recipient */
1035 extern uschar *srs_recipient; /* SRS recipient */
1036 extern uschar *srs_secrets; /* SRS secrets list */
1037 extern uschar *srs_status; /* SRS staus */
1038 extern BOOL srs_usehash; /* SRS use hash flag */
1039 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
1042 extern uschar *srs_recipient; /* SRS recipient */
1044 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1045 extern int string_datestamp_offset;/* After insertion by string_format */
1046 extern int string_datestamp_length;/* After insertion by string_format */
1047 extern int string_datestamp_type; /* After insertion by string_format */
1048 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1049 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1050 extern const uschar *submission_domain;/* Domain for submission mode */
1051 extern const uschar *submission_name; /* User name set from ACL */
1052 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1053 extern int syslog_facility; /* As defined by Syslog.h */
1054 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1055 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1056 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1057 extern uschar *system_filter; /* Name of system filter file */
1059 extern uschar *system_filter_directory_transport; /* Transports for the */
1060 extern uschar *system_filter_file_transport; /* system filter */
1061 extern uschar *system_filter_pipe_transport;
1062 extern uschar *system_filter_reply_transport;
1064 extern gid_t system_filter_gid; /* Gid for running system filter */
1065 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1066 extern uid_t system_filter_uid; /* Uid for running system filter */
1067 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1069 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1070 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1071 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1072 #ifdef USE_TCP_WRAPPERS
1073 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1075 extern int test_harness_load_avg; /* For use when testing */
1076 extern int thismessage_size_limit; /* Limit for this message */
1077 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1078 #ifdef MEASURE_TIMING
1079 extern struct timeval timestamp_startup; /* For development measurements */
1082 extern uschar *transport_name; /* Name of transport last started */
1083 extern int transport_count; /* Count of bytes transported */
1084 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1085 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1086 extern int transport_filter_timeout; /* Timeout for same */
1088 extern transport_info transports_available[]; /* Vector of available transports */
1089 extern transport_instance *transports; /* Chain of instantiated transports */
1090 extern transport_instance transport_defaults; /* Default values */
1092 extern int transport_write_timeout;/* Set to time out individual writes */
1094 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1095 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1096 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1097 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1099 extern gid_t *trusted_groups; /* List of trusted groups */
1100 extern uid_t *trusted_users; /* List of trusted users */
1101 extern uschar *timezone_string; /* Required timezone setting */
1103 extern uschar *unknown_login; /* To use when login id unknown */
1104 extern uschar *unknown_username; /* Ditto */
1105 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1106 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1107 extern uschar *uucp_from_sender; /* For building the sender */
1109 extern uschar *warn_message_file; /* Template for warning messages */
1110 extern uschar *warnmsg_delay; /* String form of delay time */
1111 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1112 extern BOOL write_rejectlog; /* Control of reject logging */
1114 extern uschar *verify_mode; /* Running a router in verify mode */
1115 extern uschar *version_copyright; /* Copyright notice */
1116 extern uschar *version_date; /* Date of compilation */
1117 extern uschar *version_cnumber; /* Compile number */
1118 extern uschar *version_string; /* Version string */
1120 extern int warning_count; /* Delay warnings sent for this msg */
1122 /* End of globals.h */
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