1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) The Exim Maintainers 2020 - 2022 */
6 /* Copyright (c) University of Cambridge 1995 - 2018 */
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 /* These variables are outside the #ifdef because it keeps the code less
81 cluttered in several places (e.g. during logging) if we can always refer to
82 them. Also, the tls_ variables are now always visible. */
85 client_conn_ctx active; /* fd/socket when in a TLS session, and ptr to TLS context */
86 int bits; /* bits used in TLS session */
87 BOOL certificate_verified; /* Client certificate verified */
89 BOOL dane_verified; /* ... via DANE */
90 int tlsa_usage; /* TLSA record(s) usage */
92 uschar *cipher; /* Cipher used */
93 const uschar *cipher_stdname; /* Cipher used, RFC version */
94 const uschar *ver; /* TLS version */
96 BOOL on_connect; /* For older MTAs that don't STARTTLS */
97 uschar *on_connect_ports; /* Ports always tls-on-connect */
98 void *ourcert; /* Certificate we presented, binary */
99 void *peercert; /* Certificate of peer, binary */
100 uschar *peerdn; /* DN from peer */
101 uschar *sni; /* Server Name Indication */
102 uschar *channelbinding; /* b64'd data identifying channel, for authenticators */
104 OCSP_NOT_REQ=0, /* not requested */
105 OCSP_NOT_RESP, /* no response to request */
106 OCSP_VFY_NOT_TRIED, /* response not verified */
107 OCSP_FAILED, /* verify failed */
108 OCSP_VFIED /* verified */
109 } ocsp; /* Stapled OCSP status */
110 #ifndef DISABLE_TLS_RESUME
111 hctx resume_hctx; /* session lookup key accumulation */
112 const uschar * resume_index; /* session lookup key */
114 unsigned resumption; /* Session resumption */
115 BOOL host_resumable:1;
116 BOOL ticket_received:1;
118 BOOL verify_override:1; /* certificate_verified only due to tls_try_verify_hosts */
119 BOOL ext_master_secret:1; /* extended-master-secret was used */
121 extern tls_support tls_in;
122 extern tls_support tls_out;
125 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
126 extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
127 extern uschar *hosts_require_alpn; /* Mandatory ALPN successful nogitiation */
128 extern uschar *openssl_options; /* OpenSSL compatibility options */
129 extern const pcre2_code *regex_STARTTLS; /* For recognizing STARTTLS settings */
130 extern uschar *tls_alpn; /* ALPN names acceptable */
131 extern uschar *tls_certificate; /* Certificate file */
132 extern uschar *tls_crl; /* CRL File */
133 extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
134 extern uschar *tls_dhparam; /* DH param file */
135 extern uschar *tls_eccurve; /* EC curve */
136 # ifndef DISABLE_OCSP
137 extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
139 extern uschar *tls_privatekey; /* Private key file */
140 extern BOOL tls_remember_esmtp; /* For YAEB */
141 extern uschar *tls_require_ciphers; /* So some can be avoided */
142 # ifndef DISABLE_TLS_RESUME
143 extern uschar *tls_resumption_hosts; /* TLS session resumption */
145 extern uschar *tls_try_verify_hosts; /* Optional client verification */
146 extern uschar *tls_verify_certificates;/* Path for certificates to check */
147 extern uschar *tls_verify_hosts; /* Mandatory client verification */
148 extern int tls_watch_fd; /* for inotify of creds files */
149 extern time_t tls_watch_trigger_time; /* non-0: triggered */
151 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
153 extern uschar *dsn_envid; /* DSN envid string */
154 extern int dsn_ret; /* DSN ret type*/
155 extern const pcre2_code *regex_DSN; /* For recognizing DSN settings */
156 extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
158 /* Input-reading functions for messages, so we can use special ones for
161 extern int (*lwr_receive_getc)(unsigned);
162 extern uschar * (*lwr_receive_getbuf)(unsigned *);
163 extern BOOL (*lwr_receive_hasc)(void);
164 extern int (*lwr_receive_ungetc)(int);
166 extern int (*receive_getc)(unsigned);
167 extern uschar * (*receive_getbuf)(unsigned *);
168 extern BOOL (*receive_hasc)(void);
169 extern void (*receive_get_cache)(unsigned);
170 extern int (*receive_ungetc)(int);
171 extern int (*receive_feof)(void);
172 extern int (*receive_ferror)(void);
175 /* For clearing, saving, restoring address expansion variables. We have to have
176 the size of this vector set explicitly, because it is referenced from more than
179 extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
181 /* Flags for which we don't need an address ever so can use a bitfield */
183 extern struct global_flags {
184 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
185 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
186 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
187 BOOL address_test_mode :1; /* True for -bt */
188 BOOL admin_user :1; /* True if caller can do admin */
189 BOOL allow_auth_unadvertised :1; /* As it says */
190 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
191 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
192 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
194 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
195 BOOL bdat_readers_wanted :1; /* BDAT-handling to be pushed on readfunc stack */
197 BOOL chunking_offered :1;
198 BOOL config_changed :1; /* True if -C used */
199 BOOL continue_more :1; /* Flag more addresses waiting */
201 BOOL daemon_listen :1; /* True if listening required */
202 BOOL debug_daemon :1; /* Debug the daemon process only */
203 BOOL deliver_firsttime :1; /* True for first delivery attempt */
204 BOOL deliver_force :1; /* TRUE if delivery was forced */
205 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
206 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
207 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
208 BOOL deliver_selectstring_regex :1; /* String is regex */
209 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
210 BOOL disable_callout_flush :1; /* Don't flush before callouts */
211 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
212 BOOL disable_logging :1; /* Disables log writing when TRUE */
214 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
215 BOOL dkim_init_done :1; /* lazy-init status */
218 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
219 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
220 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
222 BOOL dont_deliver :1; /* TRUE for -N option */
223 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
225 BOOL enable_dollar_recipients :1; /* Make $recipients available */
226 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
228 BOOL filter_running :1; /* TRUE while running a filter */
230 BOOL header_rewritten :1; /* TRUE if header changed by router */
231 BOOL helo_verified :1; /* True if HELO verified */
232 BOOL helo_verify_failed :1; /* True if attempt failed */
233 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
234 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
236 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
237 BOOL is_inetd :1; /* True for inetd calls */
239 BOOL local_error_message :1; /* True if handling one of these */
240 BOOL log_testing_mode :1; /* TRUE in various testing modes */
242 #ifdef WITH_CONTENT_SCAN
243 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
245 BOOL no_multiline_responses :1; /* For broken clients */
247 BOOL parse_allow_group :1; /* Allow group syntax */
248 BOOL parse_found_group :1; /* In the middle of a group */
249 BOOL pipelining_enable :1; /* As it says */
250 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
251 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
254 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
255 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
256 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
257 BOOL queue_run_force :1; /* TRUE to force during queue run */
258 BOOL queue_run_local :1; /* Local deliveries only in queue run */
259 BOOL queue_running :1; /* TRUE for queue running process and */
260 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
262 BOOL really_exim :1; /* FALSE in utilities */
263 BOOL receive_call_bombout :1; /* Flag for crashing log */
264 BOOL recipients_discarded :1; /* By an ACL */
265 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
267 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
268 BOOL sender_address_forced :1; /* Set by -f */
269 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
270 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
271 BOOL sender_local :1; /* TRUE for local senders */
272 BOOL sender_name_forced :1; /* Set by -F */
273 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
274 BOOL smtp_authenticated :1; /* Sending client has authenticated */
275 #ifndef DISABLE_PIPE_CONNECT
276 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPECONNECT */
277 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
278 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
280 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
281 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
282 BOOL smtp_in_quit :1; /* server noted QUIT command */
283 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
284 BOOL submission_mode :1; /* Can be forced from ACL */
285 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
286 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
287 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
288 BOOL system_filtering :1; /* TRUE when running system filter */
290 BOOL taint_check_slow :1; /* malloc/mmap are not returning distinct ranges */
291 BOOL testsuite_delays :1; /* interprocess sequencing delays, under testsuite */
292 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
293 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
294 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
295 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
296 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
297 BOOL timestamps_utc :1; /* Use UTC for all times */
298 BOOL transport_filter_timed_out :1; /* True if it did */
299 BOOL trusted_caller :1; /* Caller is trusted */
300 BOOL trusted_config :1; /* Configuration file is trusted */
304 /* General global variables */
306 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
307 extern uschar *add_environment; /* List of environment variables to add */
308 extern header_line *acl_added_headers; /* Headers added by an ACL */
309 extern tree_node *acl_anchor; /* Tree of named ACLs */
310 extern uschar *acl_arg[9]; /* Argument to ACL call */
311 extern int acl_narg; /* Number of arguments to ACL call */
312 extern int acl_level; /* Nesting depth and debug indent */
313 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
314 #ifdef WITH_CONTENT_SCAN
315 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
317 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
318 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
319 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
320 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
321 extern uschar *acl_smtp_data; /* ACL run after DATA received */
323 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
324 const extern pcre2_code *regex_PRDR; /* For recognizing PRDR settings */
327 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
329 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
330 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
331 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
332 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
333 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
334 #ifdef WITH_CONTENT_SCAN
335 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
337 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
338 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
339 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
340 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
341 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
342 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
343 extern tree_node *acl_var_c; /* ACL connection variables */
344 extern tree_node *acl_var_m; /* ACL message variables */
345 extern uschar *acl_verify_message; /* User message for verify failure */
346 extern string_item *acl_warn_logged; /* Logged lines */
347 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
348 extern uschar *acl_wherenames[]; /* Names for messages */
349 extern address_item *addr_duplicate; /* Duplicate address list */
350 extern address_item address_defaults; /* Default data for address item */
351 extern uschar *address_file; /* Name of file when delivering to one */
352 extern uschar *address_pipe; /* Pipe command when delivering to one */
353 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
354 extern int addresslist_count; /* Number defined */
355 extern gid_t *admin_groups; /* List of admin groups */
356 extern BOOL allow_domain_literals; /* As it says */
357 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
358 #ifdef EXPERIMENTAL_ARC
359 extern struct arc_set *arc_received; /* highest ARC instance evaluation struct */
360 extern int arc_received_instance; /* highest ARC instance number in headers */
361 extern int arc_oldest_pass; /* lowest passing instance number in headers */
362 extern const uschar *arc_state; /* verification state */
363 extern const uschar *arc_state_reason;
365 extern BOOL allow_utf8_domains; /* For experimenting */
366 extern uschar *authenticated_fail_id; /* ID that failed authentication */
367 extern uschar *authenticated_id; /* ID that was authenticated */
368 extern uschar *authenticated_sender; /* From AUTH on MAIL */
369 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
370 extern uschar *authenticator_name; /* for debug and error messages */
371 extern uschar *auth_advertise_hosts; /* Only advertise to these */
372 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
373 extern auth_instance *auths; /* Chain of instantiated auths */
374 extern auth_instance auth_defaults; /* Default values */
375 extern uschar *auth_defer_msg; /* Error message for log */
376 extern uschar *auth_defer_user_msg; /* Error message for user */
377 extern const uschar *auth_vars[]; /* $authn variables */
378 extern int auto_thaw; /* Auto-thaw interval */
379 #ifdef WITH_CONTENT_SCAN
380 extern int av_failed; /* TRUE if the AV process failed */
381 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
384 extern uschar *base62_chars; /* Table of base-62 characters */
385 extern uschar *bi_command; /* Command for -bi option */
386 extern uschar *big_buffer; /* Used for various temp things */
387 extern int big_buffer_size; /* Current size (can expand) */
388 #ifdef EXPERIMENTAL_BRIGHTMAIL
389 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
390 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
391 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
392 extern uschar *bmi_config_file; /* Brightmail config file */
393 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
394 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
395 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
397 extern int bsmtp_transaction_linecount; /* Start of last transaction */
398 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
399 extern uschar *bounce_message_file; /* Template file */
400 extern uschar *bounce_message_text; /* One-liner */
401 extern uschar *bounce_recipient; /* When writing an errmsg */
402 extern BOOL bounce_return_body; /* Include body in returned message */
403 extern int bounce_return_linesize_limit; /* Max line length in return */
404 extern BOOL bounce_return_message; /* Include message in bounce */
405 extern int bounce_return_size_limit; /* Max amount to return */
406 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
408 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
409 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
410 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
411 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
412 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
413 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
414 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
415 extern int check_log_inodes; /* Minimum for message acceptance */
416 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
417 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
418 extern int check_spool_inodes; /* Minimum for message acceptance */
419 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
420 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
421 extern unsigned chunking_datasize;
422 extern unsigned chunking_data_left;
423 extern chunking_state_t chunking_state;
424 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
425 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
426 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
427 #ifndef DISABLE_CLIENT_CMD_LOG
428 extern gstring *client_cmd_log; /* debug log of client cmds & responses */
430 extern int clmacro_count; /* Number of command line macros */
431 extern uschar *clmacros[]; /* Copy of them, for re-exec */
432 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
433 extern int connection_max_messages;/* Max down one SMTP connection */
434 extern FILE *config_file; /* Configuration file */
435 extern const uschar *config_filename; /* Configuration file name */
436 extern gid_t config_gid; /* Additional group owner */
437 extern int config_lineno; /* Line number */
438 extern uschar *config_main_filelist; /* List of possible config files */
439 extern uschar *config_main_filename; /* File name actually used */
440 extern uschar *config_main_directory; /* Directory where the main config file was found */
441 extern uid_t config_uid; /* Additional owner */
442 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
443 extern BOOL continue_proxy_dane; /* proxied conn is DANE */
444 extern uschar *continue_proxy_sni; /* proxied conn SNI */
445 extern uschar *continue_hostname; /* Host for continued delivery */
446 extern uschar *continue_host_address; /* IP address for ditto */
447 extern int continue_sequence; /* Sequence num for continued delivery */
448 extern uschar *continue_transport; /* Transport for continued delivery */
449 #ifdef EXPERIMENTAL_ESMTP_LIMITS
450 extern unsigned continue_limit_mail; /* Peer advertised limit */
451 extern unsigned continue_limit_rcpt;
452 extern unsigned continue_limit_rcptdom;
456 extern uschar *csa_status; /* Client SMTP Authorization result */
459 unsigned callout_hold_only:1; /* Conn is only for verify callout */
460 unsigned delivery:1; /* When to attempt */
461 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
462 unsigned is_tls:1; /* Conn has TLS active */
463 client_conn_ctx cctx; /* Open connection */
464 int nrcpt; /* Count of addresses */
465 uschar * transport; /* Name of transport */
466 uschar * interface; /* (address of) */
467 uschar * snd_ip; /* sending_ip_address */
468 int snd_port; /* sending_port */
469 unsigned peer_options; /* smtp_peer_options */
470 host_item host; /* Host used */
471 address_item addr; /* (Chain of) addresses */
473 extern cut_t cutthrough; /* Deliver-concurrently */
475 extern int daemon_notifier_fd; /* Unix socket for notifications */
476 extern uschar *daemon_smtp_port; /* Can be a list of ports */
477 extern int daemon_startup_retries; /* Number of times to retry */
478 extern int daemon_startup_sleep; /* Sleep between retries */
480 #ifdef EXPERIMENTAL_DCC
481 extern BOOL dcc_direct_add_header; /* directly add header */
482 extern uschar *dcc_header; /* dcc header */
483 extern uschar *dcc_result; /* dcc result */
484 extern uschar *dccifd_address; /* address of the dccifd daemon */
485 extern uschar *dccifd_options; /* options for the dccifd daemon */
488 extern int debug_fd; /* The fd for debug_file */
489 extern FILE *debug_file; /* Where to write debugging info */
490 extern int debug_notall[]; /* Debug options excluded from +all */
491 extern bit_table debug_options[]; /* Table of debug options */
492 extern int debug_options_count; /* Size of table */
493 extern unsigned debug_pretrigger_bsize;
494 extern uschar *debug_pretrigger_buf; /* circular buffer for precapture */
495 extern BOOL debug_store; /* Do extra checks on store_reset */
496 extern uschar debuglog_name[LOG_NAME_SIZE]; /* ACL-init debug */
498 extern int delay_warning[]; /* Times between warnings */
499 extern uschar *delay_warning_condition; /* Condition string for warnings */
500 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
502 extern uschar *deliver_address_data; /* Arbitrary data for an address */
503 extern int deliver_datafile; /* FD for data part of message */
504 extern const uschar *deliver_domain; /* The local domain for delivery */
505 extern uschar *deliver_domain_data; /* From domain lookup */
506 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
507 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
508 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
509 extern time_t deliver_frozen_at; /* Time of freezing */
510 extern uschar *deliver_home; /* Home directory for pipes */
511 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
512 /* Remote host for filter */
513 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
514 extern int deliver_host_port; /* Address for remote delivery filter */
515 extern uschar *deliver_in_buffer; /* Buffer for copying file */
516 extern ino_t deliver_inode; /* Inode for appendfile */
517 extern uschar *deliver_localpart; /* The local part for delivery */
518 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
519 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
520 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
521 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
522 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
523 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
524 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
525 extern uschar *deliver_out_buffer; /* Buffer for copying file */
526 extern int deliver_queue_load_max; /* Different value for queue running */
527 extern address_item *deliver_recipients; /* Current set of addresses */
528 extern uschar *deliver_selectstring; /* For selecting by recipient */
529 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
530 #ifdef ENABLE_DISABLE_FSYNC
531 extern BOOL disable_fsync; /* Not for normal use */
533 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
536 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
537 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
538 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
539 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
540 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
541 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
542 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
543 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
544 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
545 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
546 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
547 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
548 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
549 extern uschar *dkim_verify_status; /* result for this signature */
550 extern uschar *dkim_verify_reason; /* result for this signature */
553 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
554 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
555 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
556 extern uschar *dmarc_status; /* Expansion variable, one word value */
557 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
558 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
559 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
562 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
563 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
564 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
565 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
566 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
568 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
570 extern int dns_retrans; /* Retransmission time setting */
571 extern int dns_retry; /* Number of retries */
572 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
573 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
574 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
575 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
576 extern uschar *dnslist_domain; /* DNS (black) list domain */
577 extern uschar *dnslist_matched; /* DNS (black) list matched key */
578 extern uschar *dnslist_text; /* DNS (black) list text message */
579 extern uschar *dnslist_value; /* DNS (black) list IP address */
580 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
581 extern int domainlist_count; /* Number defined */
583 /* This option is now a no-opt, retained for compatibility */
584 extern BOOL drop_cr; /* For broken local MUAs */
585 extern const uschar *driver_srcfile; /* For debug & errors */
586 extern int driver_srcline; /* For debug & errors */
588 extern unsigned int dtrigger_selector; /* when to start debug */
590 extern uschar *dsn_from; /* From: string for DSNs */
592 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
593 extern int errno_quota; /* Quota errno in this OS */
594 extern int error_handling; /* Error handling style */
595 extern uschar *errors_copy; /* For taking copies of errors */
596 extern uschar *errors_reply_to; /* Reply-to for error messages */
597 extern int errors_sender_rc; /* Return after message to sender*/
599 #ifndef DISABLE_EVENT
600 extern uschar *event_action; /* expansion for delivery events */
601 extern uschar *event_data; /* event data */
602 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
603 extern const uschar *event_name; /* event classification */
606 extern gid_t exim_gid; /* To be used with exim_uid */
607 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
608 extern uschar *exim_path; /* Path to exec exim */
609 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
610 extern uid_t exim_uid; /* Non-root uid for exim */
611 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
612 extern int expand_level; /* Nesting depth; indent for debug */
613 extern int expand_forbid; /* RDO flags for forbidding things */
614 extern int expand_nlength[]; /* Lengths of numbered strings */
615 extern int expand_nmax; /* Max numerical value */
616 extern const uschar *expand_nstring[]; /* Numbered strings */
617 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
618 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
620 extern int fake_response; /* Fake FAIL or DEFER response to data */
621 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
622 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
623 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
624 extern int filter_test; /* Filter test type */
625 extern uschar *filter_test_sfile; /* System filter test file */
626 extern uschar *filter_test_ufile; /* User filter test file */
627 extern uschar *filter_thisaddress; /* For address looping */
628 extern int finduser_retries; /* Retry count for getpwnam() */
629 extern uid_t fixed_never_users[]; /* Can't be overridden */
630 extern uschar *freeze_tell; /* Message on (some) freezings */
631 extern uschar *freeze_tell_config; /* The configured setting */
632 extern uschar *fudged_queue_times; /* For use in test harness */
634 extern uschar *gecos_name; /* To be expanded when pattern matches */
635 extern uschar *gecos_pattern; /* Pattern to match */
636 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
638 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
639 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
640 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
641 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
642 extern int header_insert_maxlen; /* Max for inserting headers */
643 extern int header_maxsize; /* Max total length for header */
644 extern int header_line_maxsize; /* Max for an individual line */
645 extern header_name header_names[]; /* Table of header names */
646 extern int header_names_size; /* Number of entries */
647 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
648 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
649 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
650 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
651 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
652 extern const uschar *hex_digits; /* Used in several places */
653 extern uschar *hold_domains; /* Hold up deliveries to these */
654 extern uschar *host_data; /* Obtained from lookup in ACL */
655 extern uschar *host_lookup; /* For which IP addresses are always looked up */
656 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
657 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
658 extern uschar *host_lookup_order; /* Order of host lookup types */
659 extern uschar *host_lookup_msg; /* Text for why it failed */
660 extern int host_number; /* For sharing spools */
661 extern uschar *host_number_string; /* For expanding */
662 extern uschar *hosts_require_helo; /* check for HELO/EHLO before MAIL */
663 extern uschar *host_reject_connection; /* Reject these hosts */
664 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
665 extern int hostlist_count; /* Number defined */
666 extern uschar *hosts_connection_nolog; /* Limits the logging option */
667 extern uschar *hosts_treat_as_local; /* For routing */
669 extern int ignore_bounce_errors_after; /* Keep them for this time. */
670 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
671 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
672 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
673 extern uschar *initial_cwd; /* The directory we where in at startup */
674 extern uschar *iterate_item; /* Item from iterate list */
676 extern int journal_fd; /* Fd for journal file */
678 extern uschar *keep_environment; /* Whitelist for environment variables */
679 extern int keep_malformed; /* Time to keep malformed messages */
681 extern uschar *eldap_dn; /* Where LDAP DNs are left */
682 #ifdef EXPERIMENTAL_ESMTP_LIMITS
683 extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
685 extern int load_average; /* Most recently read load average */
686 extern BOOL local_from_check; /* For adding Sender: (global value) */
687 extern uschar *local_from_prefix; /* Permitted prefixes */
688 extern uschar *local_from_suffix; /* Permitted suffixes */
689 extern uschar *local_interfaces; /* For forcing specific interfaces */
690 #ifdef HAVE_LOCAL_SCAN
691 extern uschar *local_scan_data; /* Text returned by local_scan() */
692 extern optionlist local_scan_options[];/* Option list for local_scan() */
693 extern int local_scan_options_count; /* Size of the list */
694 extern int local_scan_timeout; /* Timeout for local_scan() */
696 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
697 extern gid_t local_user_gid; /* As it says; may be set in routers */
698 extern uid_t local_user_uid; /* As it says; may be set in routers */
699 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
700 extern int localpartlist_count; /* Number defined */
701 extern uschar *log_buffer; /* For constructing log entries */
702 extern int log_default[]; /* Initialization list for log_selector */
703 extern uschar *log_file_path; /* If unset, use default */
704 extern int log_notall[]; /* Log options excluded from +all */
705 extern bit_table log_options[]; /* Table of options */
706 extern int log_options_count; /* Size of table */
707 extern int log_reject_target; /* Target log for ACL rejections */
708 extern unsigned int log_selector[]; /* Bit map of logging options */
709 extern uschar *log_selector_string; /* As supplied in the config */
710 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
711 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
712 extern uschar *login_sender_address; /* The actual sender address */
713 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
714 extern int lookup_list_count; /* Number of entries in the list */
715 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
716 extern int lookup_open_max; /* Max lookup files to cache */
717 extern uschar *lookup_value; /* Value looked up from file */
719 extern macro_item *macros; /* Configuration macros */
720 extern macro_item *macros_user; /* Non-builtin configuration macros */
721 extern macro_item *mlast; /* Last item in macro list */
722 extern uschar *mailstore_basename; /* For mailstore deliveries */
723 #ifdef WITH_CONTENT_SCAN
724 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
726 extern int max_received_linelength;/* What it says */
727 extern int max_username_length; /* For systems with broken getpwnam() */
728 extern int message_age; /* In seconds */
729 extern uschar *message_body; /* Start of message body for filter */
730 extern uschar *message_body_end; /* End of message body for filter */
731 extern BOOL message_body_newlines; /* FALSE => remove newlines */
732 extern int message_body_size; /* Sic */
733 extern int message_body_visible; /* Amount visible in message_body */
734 extern int message_ended; /* State of message reading and how ended */
735 extern uschar *message_headers; /* When built */
736 extern uschar message_id_option[]; /* -E<message-id> for use as option */
737 extern uschar *message_id_external; /* External form of following */
738 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
739 extern uschar *message_id_text; /* Expanded to form message_id */
740 extern int message_linecount; /* As it says */
741 extern BOOL message_logs; /* TRUE to write message logs */
742 extern int message_size; /* Size of message */
743 extern uschar *message_size_limit; /* As it says */
745 extern BOOL message_smtputf8; /* Internationalized mail handling */
746 extern int message_utf8_downconvert; /* convert from utf8 */
747 const extern pcre2_code *regex_UTF8; /* For recognizing SMTPUTF8 settings */
749 extern uschar message_subdir[]; /* Subdirectory for messages */
750 extern uschar *message_reference; /* Reference for error messages */
752 /* MIME ACL expandables */
753 #ifdef WITH_CONTENT_SCAN
754 extern int mime_anomaly_level;
755 extern const uschar *mime_anomaly_text;
756 extern uschar *mime_boundary;
757 extern uschar *mime_charset;
758 extern uschar *mime_content_description;
759 extern uschar *mime_content_disposition;
760 extern uschar *mime_content_id;
761 extern unsigned int mime_content_size;
762 extern uschar *mime_content_transfer_encoding;
763 extern uschar *mime_content_type;
764 extern uschar *mime_decoded_filename;
765 extern uschar *mime_filename;
766 extern int mime_is_multipart;
767 extern int mime_is_coverletter;
768 extern int mime_is_rfc822;
769 extern int mime_part_count;
772 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
774 extern uid_t *never_users; /* List of uids never to be used */
775 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
777 extern const int on; /* For setsockopt */
778 extern const int off;
780 extern optionlist optionlist_auths[]; /* These option lists are made */
781 extern int optionlist_auths_size; /* global so that readconf can */
782 extern optionlist optionlist_routers[]; /* see them for printing out */
783 extern int optionlist_routers_size; /* the options. */
784 extern optionlist optionlist_transports[];
785 extern int optionlist_transports_size;
787 extern uid_t original_euid; /* Original effective uid */
788 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
789 extern uschar *originator_login; /* Login of same */
790 extern uschar *originator_name; /* Full name of same */
791 extern uid_t originator_uid; /* Uid of ditto */
792 extern uschar *override_local_interfaces; /* Value of -oX argument */
793 extern uschar *override_pid_file_path; /* Value of -oP argument */
795 extern BOOL panic_coredump; /* SEGV rather than exit, on LOG_PANIC_DIE */
796 extern pcre2_general_context * pcre_gen_ctx; /* pcre memory management */
797 extern pcre2_compile_context * pcre_gen_cmp_ctx;
798 extern pcre2_match_context * pcre_gen_mtc_ctx;
799 extern pcre2_general_context * pcre_mlc_ctx;
800 extern pcre2_compile_context * pcre_mlc_cmp_ctx;
802 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
803 extern uschar *pid_file_path; /* For writing daemon pids */
804 #ifndef DISABLE_PIPE_CONNECT
805 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
807 extern uschar *pipelining_advertise_hosts; /* As it says */
809 extern BOOL prdr_enable; /* As it says */
810 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
812 extern BOOL preserve_message_logs; /* Save msglog files */
813 extern uschar *primary_hostname; /* Primary name of this computer */
814 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
815 extern uschar *process_info; /* For SIGUSR1 output */
816 extern int process_info_len;
817 extern uschar *process_log_path; /* Alternate path */
818 extern const uschar *process_purpose; /* for debug output */
819 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
821 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
822 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
823 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
824 extern int proxy_external_port; /* Port on remote interface of proxy */
825 extern uschar *proxy_local_address; /* IP of local interface of proxy */
826 extern int proxy_local_port; /* Port on local interface of proxy */
827 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
828 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
831 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
832 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
833 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
835 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
836 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
837 extern uschar *queue_domains; /* Queue these domains */
838 #ifndef DISABLE_QUEUE_RAMP
839 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
841 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
842 /* immediate children */
843 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
844 extern int queue_run_pipe; /* Pipe for synchronizing */
845 extern int queue_interval; /* Queue running interval */
846 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
847 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
848 extern BOOL queue_only; /* TRUE to disable immediate delivery */
849 extern int queue_only_load; /* Max load before auto-queue */
850 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
851 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
852 extern BOOL queue_only_override; /* Allow override from command line */
853 extern BOOL queue_run_in_order; /* As opposed to random */
854 extern uschar *queue_run_max; /* Max queue runners */
855 extern unsigned queue_size; /* items in queue */
856 extern time_t queue_size_next; /* next time to evaluate queue_size */
857 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
859 extern unsigned int random_seed; /* Seed for random numbers */
860 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
861 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
862 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
863 extern uschar *raw_active_hostname; /* Pre-expansion */
864 extern uschar *raw_sender; /* Before rewriting */
865 extern uschar **raw_recipients; /* Before rewriting */
866 extern int raw_recipients_count;
867 extern const uschar * rc_names[]; /* Mostly for debug output */
868 extern int rcpt_count; /* Count of RCPT commands in a message */
869 extern int rcpt_fail_count; /* Those that got 5xx */
870 extern int rcpt_defer_count; /* Those that got 4xx */
871 extern gid_t real_gid; /* Real gid */
872 extern uid_t real_uid; /* Real user running program */
873 extern int receive_linecount; /* Mainly for BSMTP errors */
874 extern int receive_messagecount; /* Mainly for BSMTP errors */
875 extern int receive_timeout; /* For non-SMTP acceptance */
876 extern int received_count; /* Count of Received: headers */
877 extern uschar *received_for; /* For "for" field */
878 extern uschar *received_header_text; /* Definition of Received: header */
879 extern int received_headers_max; /* Max count of Received: headers */
880 extern struct timeval received_time; /* Time the message started to be received */
881 extern struct timeval received_time_complete; /* Time the message completed reception */
882 extern uschar *recipient_data; /* lookup data for recipients */
883 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
884 extern uschar *recipient_verify_failure; /* What went wrong */
885 extern int recipients_list_max; /* Maximum number fitting in list */
886 extern int recipients_max; /* Max permitted */
887 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
888 extern const pcre2_code *regex_AUTH; /* For recognizing AUTH settings */
889 extern const pcre2_code *regex_check_dns_names; /* For DNS name checking */
890 extern const pcre2_code *regex_From; /* For recognizing "From_" lines */
891 extern const pcre2_code *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
892 extern const pcre2_code *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
893 #ifdef EXPERIMENTAL_ESMTP_LIMITS
894 extern const pcre2_code *regex_LIMITS; /* For recognizing LIMITS */
896 extern const pcre2_code *regex_PIPELINING; /* For recognizing PIPELINING */
897 extern const pcre2_code *regex_SIZE; /* For recognizing SIZE settings */
898 #ifndef DISABLE_PIPE_CONNECT
899 extern const pcre2_code *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
901 extern const pcre2_code *regex_ismsgid; /* Compiled r.e. for message ID */
902 extern const pcre2_code *regex_smtp_code; /* For recognizing SMTP codes */
903 extern const uschar *regex_vars[]; /* $regexN variables */
904 #ifdef WHITELIST_D_MACROS
905 extern const pcre2_code *regex_whitelisted_macro; /* For -D macro values */
907 #ifdef WITH_CONTENT_SCAN
908 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
910 extern int remote_delivery_count; /* Number of remote addresses */
911 extern int remote_max_parallel; /* Maximum parallel delivery */
912 extern uschar *remote_sort_domains; /* Remote domain sorting order */
913 extern retry_config *retries; /* Chain of retry config information */
914 extern int retry_data_expire; /* When to expire retry data */
915 extern int retry_interval_max; /* Absolute maximum */
916 extern int retry_maximum_timeout; /* The maximum timeout */
917 extern uschar *return_path; /* Return path for a message */
918 extern BOOL return_path_remove; /* Remove return-path headers */
919 extern int rewrite_existflags; /* Indicate which headers have rewrites */
920 extern uschar *rfc1413_hosts; /* RFC hosts */
921 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
922 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
923 extern uid_t root_gid; /* The gid for root */
924 extern uid_t root_uid; /* The uid for root */
925 extern router_info routers_available[];/* Vector of available routers */
926 extern router_instance *routers; /* Chain of instantiated routers */
927 extern router_instance router_defaults;/* Default values */
928 extern uschar *router_name; /* Name of router last started */
929 extern tree_node *router_var; /* Variables set by router */
930 extern ip_address_item *running_interfaces; /* Host's running interfaces */
931 extern uschar *running_status; /* Flag string for testing */
932 extern int runrc; /* rc from ${run} */
934 extern uschar *search_error_message; /* Details of lookup problem */
935 extern uschar *self_hostname; /* Self host after routing->directors */
936 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
937 extern uschar *sender_address_data; /* address_data from sender verify */
938 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
939 extern uschar *sender_data; /* lookup result for senders */
940 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
941 extern uschar *sender_fullhost; /* Sender host name + address */
942 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
943 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
944 extern uschar **sender_host_aliases; /* Points to list of alias names */
945 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
946 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
947 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
948 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
949 extern uschar *sender_rate; /* Sender rate computed by ACL */
950 extern uschar *sender_rate_limit; /* Configured rate limit */
951 extern uschar *sender_rate_period; /* Configured smoothing period */
952 extern uschar *sender_rcvhost; /* Host data for Received: */
953 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
954 extern uschar *sender_verify_failure; /* What went wrong */
955 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
956 extern address_item *sender_verified_failed; /* The one that caused denial */
957 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
958 extern int sending_port; /* Port of outgoing interface */
959 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
960 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
961 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
962 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
963 extern int smtp_accept_count; /* Count of connections */
964 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
965 extern int smtp_accept_max; /* Max SMTP connections */
966 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
967 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
968 extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
969 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
970 extern int smtp_accept_queue; /* Queue after so many connections */
971 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
972 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
973 extern uschar *smtp_active_hostname; /* Hostname for this message */
974 extern int smtp_backlog_monitor; /* listen backlog level to log */
975 extern uschar *smtp_banner; /* Banner string (to be expanded) */
976 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
977 extern int smtp_ch_index; /* Index in smtp_connection_had */
978 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
979 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
980 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
981 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
982 extern int smtp_connect_backlog; /* Max backlog permitted */
983 extern double smtp_delay_mail; /* Current MAIL delay */
984 extern double smtp_delay_rcpt; /* Current RCPT delay */
985 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
986 extern uschar *smtp_etrn_command; /* Command to run */
987 extern BOOL smtp_etrn_serialize; /* Only one at once */
988 extern FILE *smtp_in; /* Incoming SMTP input file */
989 extern int smtp_listen_backlog; /* Current listener socket backlog, if monitored */
990 extern int smtp_load_reserve; /* Only from reserved if load > this */
991 extern int smtp_mailcmd_count; /* Count of MAIL commands */
992 extern int smtp_mailcmd_max; /* Limit for MAIL commands */
993 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
994 extern int smtp_max_unknown_commands; /* As it says */
995 extern uschar *smtp_names[]; /* decode for command codes */
996 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
997 extern FILE *smtp_out; /* Incoming SMTP output file */
998 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
999 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
1000 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
1001 extern uschar *smtp_read_error; /* Message for SMTP input error */
1002 extern int smtp_receive_timeout; /* Applies to each received line */
1003 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
1004 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
1005 extern BOOL smtp_return_error_details; /* TRUE to return full info */
1006 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
1007 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
1008 extern int smtp_rlm_limit; /* Max delay */
1009 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
1010 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
1011 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
1012 extern int smtp_rlr_limit; /* Max delay */
1013 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
1014 extern unsigned smtp_peer_options; /* Global flags for passed connections */
1015 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
1017 extern uschar *smtputf8_advertise_hosts; /* ingress control */
1020 #ifdef WITH_CONTENT_SCAN
1021 extern uschar *spamd_address; /* address for the spamassassin daemon */
1022 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
1023 extern uschar *spam_report; /* the spamd report (multiline) */
1024 extern uschar *spam_action; /* the spamd recommended-action */
1025 extern uschar *spam_score; /* the spam score (float) */
1026 extern uschar *spam_score_int; /* spam_score * 10 (int) */
1029 extern uschar *spf_guess; /* spf best-guess record */
1030 extern uschar *spf_header_comment; /* spf header comment */
1031 extern uschar *spf_received; /* Received-SPF: header */
1032 extern uschar *spf_result; /* spf result in string form */
1033 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
1034 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
1035 extern uschar *spf_smtp_comment_template;
1036 /* template to construct the spf comment by libspf2 */
1038 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1039 extern FILE *spool_data_file; /* handle for -D file */
1040 extern uschar *spool_directory; /* Name of spool directory */
1041 extern BOOL spool_wireformat; /* can write wireformat -D files */
1043 extern uschar *srs_recipient; /* SRS recipient */
1045 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1046 extern int string_datestamp_offset;/* After insertion by string_format */
1047 extern int string_datestamp_length;/* After insertion by string_format */
1048 extern int string_datestamp_type; /* After insertion by string_format */
1049 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1050 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1051 extern const uschar *submission_domain;/* Domain for submission mode */
1052 extern const uschar *submission_name; /* User name set from ACL */
1053 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1054 extern int syslog_facility; /* As defined by Syslog.h */
1055 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1056 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1057 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1058 extern uschar *system_filter; /* Name of system filter file */
1060 extern uschar *system_filter_directory_transport; /* Transports for the */
1061 extern uschar *system_filter_file_transport; /* system filter */
1062 extern uschar *system_filter_pipe_transport;
1063 extern uschar *system_filter_reply_transport;
1065 extern gid_t system_filter_gid; /* Gid for running system filter */
1066 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1067 extern uid_t system_filter_uid; /* Uid for running system filter */
1068 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1070 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1071 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1072 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1073 #ifdef USE_TCP_WRAPPERS
1074 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1076 extern int test_harness_load_avg; /* For use when testing */
1077 extern int thismessage_size_limit; /* Limit for this message */
1078 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1079 #ifdef MEASURE_TIMING
1080 extern struct timeval timestamp_startup; /* For development measurements */
1083 extern uschar *transport_name; /* Name of transport last started */
1084 extern int transport_count; /* Count of bytes transported */
1085 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1086 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1087 extern int transport_filter_timeout; /* Timeout for same */
1089 extern transport_info transports_available[]; /* Vector of available transports */
1090 extern transport_instance *transports; /* Chain of instantiated transports */
1091 extern transport_instance transport_defaults; /* Default values */
1093 extern int transport_write_timeout;/* Set to time out individual writes */
1095 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1096 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1097 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1098 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1100 extern gid_t *trusted_groups; /* List of trusted groups */
1101 extern uid_t *trusted_users; /* List of trusted users */
1102 extern uschar *timezone_string; /* Required timezone setting */
1104 extern uschar *unknown_login; /* To use when login id unknown */
1105 extern uschar *unknown_username; /* Ditto */
1106 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1107 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1108 extern uschar *uucp_from_sender; /* For building the sender */
1110 extern uschar *warn_message_file; /* Template for warning messages */
1111 extern uschar *warnmsg_delay; /* String form of delay time */
1112 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1113 extern BOOL write_rejectlog; /* Control of reject logging */
1115 extern uschar *verify_mode; /* Running a router in verify mode */
1116 extern uschar *version_copyright; /* Copyright notice */
1117 extern uschar *version_date; /* Date of compilation */
1118 extern uschar *version_cnumber; /* Compile number */
1119 extern uschar *version_string; /* Version string */
1121 extern int warning_count; /* Delay warnings sent for this msg */
1123 /* End of globals.h */
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