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 int delay_warning[]; /* Times between warnings */
497 extern uschar *delay_warning_condition; /* Condition string for warnings */
498 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
500 extern uschar *deliver_address_data; /* Arbitrary data for an address */
501 extern int deliver_datafile; /* FD for data part of message */
502 extern const uschar *deliver_domain; /* The local domain for delivery */
503 extern uschar *deliver_domain_data; /* From domain lookup */
504 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
505 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
506 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
507 extern time_t deliver_frozen_at; /* Time of freezing */
508 extern uschar *deliver_home; /* Home directory for pipes */
509 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
510 /* Remote host for filter */
511 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
512 extern int deliver_host_port; /* Address for remote delivery filter */
513 extern uschar *deliver_in_buffer; /* Buffer for copying file */
514 extern ino_t deliver_inode; /* Inode for appendfile */
515 extern uschar *deliver_localpart; /* The local part for delivery */
516 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
517 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
518 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
519 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
520 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
521 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
522 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
523 extern uschar *deliver_out_buffer; /* Buffer for copying file */
524 extern int deliver_queue_load_max; /* Different value for queue running */
525 extern address_item *deliver_recipients; /* Current set of addresses */
526 extern uschar *deliver_selectstring; /* For selecting by recipient */
527 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
528 #ifdef ENABLE_DISABLE_FSYNC
529 extern BOOL disable_fsync; /* Not for normal use */
531 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
534 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
535 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
536 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
537 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
538 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
539 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
540 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
541 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
542 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
543 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
544 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
545 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
546 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
547 extern uschar *dkim_verify_status; /* result for this signature */
548 extern uschar *dkim_verify_reason; /* result for this signature */
551 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
552 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
553 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
554 extern uschar *dmarc_status; /* Expansion variable, one word value */
555 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
556 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
557 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
560 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
561 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
562 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
563 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
564 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
566 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
568 extern int dns_retrans; /* Retransmission time setting */
569 extern int dns_retry; /* Number of retries */
570 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
571 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
572 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
573 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
574 extern uschar *dnslist_domain; /* DNS (black) list domain */
575 extern uschar *dnslist_matched; /* DNS (black) list matched key */
576 extern uschar *dnslist_text; /* DNS (black) list text message */
577 extern uschar *dnslist_value; /* DNS (black) list IP address */
578 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
579 extern int domainlist_count; /* Number defined */
581 /* This option is now a no-opt, retained for compatibility */
582 extern BOOL drop_cr; /* For broken local MUAs */
583 extern const uschar *driver_srcfile; /* For debug & errors */
584 extern int driver_srcline; /* For debug & errors */
586 extern unsigned int dtrigger_selector; /* when to start debug */
588 extern uschar *dsn_from; /* From: string for DSNs */
590 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
591 extern int errno_quota; /* Quota errno in this OS */
592 extern int error_handling; /* Error handling style */
593 extern uschar *errors_copy; /* For taking copies of errors */
594 extern uschar *errors_reply_to; /* Reply-to for error messages */
595 extern int errors_sender_rc; /* Return after message to sender*/
597 #ifndef DISABLE_EVENT
598 extern uschar *event_action; /* expansion for delivery events */
599 extern uschar *event_data; /* event data */
600 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
601 extern const uschar *event_name; /* event classification */
604 extern gid_t exim_gid; /* To be used with exim_uid */
605 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
606 extern uschar *exim_path; /* Path to exec exim */
607 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
608 extern uid_t exim_uid; /* Non-root uid for exim */
609 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
610 extern int expand_level; /* Nesting depth; indent for debug */
611 extern int expand_forbid; /* RDO flags for forbidding things */
612 extern int expand_nlength[]; /* Lengths of numbered strings */
613 extern int expand_nmax; /* Max numerical value */
614 extern const uschar *expand_nstring[]; /* Numbered strings */
615 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
616 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
618 extern int fake_response; /* Fake FAIL or DEFER response to data */
619 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
620 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
621 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
622 extern int filter_test; /* Filter test type */
623 extern uschar *filter_test_sfile; /* System filter test file */
624 extern uschar *filter_test_ufile; /* User filter test file */
625 extern uschar *filter_thisaddress; /* For address looping */
626 extern int finduser_retries; /* Retry count for getpwnam() */
627 extern uid_t fixed_never_users[]; /* Can't be overridden */
628 extern uschar *freeze_tell; /* Message on (some) freezings */
629 extern uschar *freeze_tell_config; /* The configured setting */
630 extern uschar *fudged_queue_times; /* For use in test harness */
632 extern uschar *gecos_name; /* To be expanded when pattern matches */
633 extern uschar *gecos_pattern; /* Pattern to match */
634 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
636 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
637 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
638 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
639 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
640 extern int header_insert_maxlen; /* Max for inserting headers */
641 extern int header_maxsize; /* Max total length for header */
642 extern int header_line_maxsize; /* Max for an individual line */
643 extern header_name header_names[]; /* Table of header names */
644 extern int header_names_size; /* Number of entries */
645 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
646 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
647 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
648 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
649 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
650 extern const uschar *hex_digits; /* Used in several places */
651 extern uschar *hold_domains; /* Hold up deliveries to these */
652 extern uschar *host_data; /* Obtained from lookup in ACL */
653 extern uschar *host_lookup; /* For which IP addresses are always looked up */
654 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
655 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
656 extern uschar *host_lookup_order; /* Order of host lookup types */
657 extern uschar *host_lookup_msg; /* Text for why it failed */
658 extern int host_number; /* For sharing spools */
659 extern uschar *host_number_string; /* For expanding */
660 extern uschar *hosts_require_helo; /* check for HELO/EHLO before MAIL */
661 extern uschar *host_reject_connection; /* Reject these hosts */
662 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
663 extern int hostlist_count; /* Number defined */
664 extern uschar *hosts_connection_nolog; /* Limits the logging option */
665 extern uschar *hosts_treat_as_local; /* For routing */
667 extern int ignore_bounce_errors_after; /* Keep them for this time. */
668 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
669 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
670 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
671 extern uschar *initial_cwd; /* The directory we where in at startup */
672 extern uschar *iterate_item; /* Item from iterate list */
674 extern int journal_fd; /* Fd for journal file */
676 extern uschar *keep_environment; /* Whitelist for environment variables */
677 extern int keep_malformed; /* Time to keep malformed messages */
679 extern uschar *eldap_dn; /* Where LDAP DNs are left */
680 #ifdef EXPERIMENTAL_ESMTP_LIMITS
681 extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
683 extern int load_average; /* Most recently read load average */
684 extern BOOL local_from_check; /* For adding Sender: (global value) */
685 extern uschar *local_from_prefix; /* Permitted prefixes */
686 extern uschar *local_from_suffix; /* Permitted suffixes */
687 extern uschar *local_interfaces; /* For forcing specific interfaces */
688 #ifdef HAVE_LOCAL_SCAN
689 extern uschar *local_scan_data; /* Text returned by local_scan() */
690 extern optionlist local_scan_options[];/* Option list for local_scan() */
691 extern int local_scan_options_count; /* Size of the list */
692 extern int local_scan_timeout; /* Timeout for local_scan() */
694 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
695 extern gid_t local_user_gid; /* As it says; may be set in routers */
696 extern uid_t local_user_uid; /* As it says; may be set in routers */
697 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
698 extern int localpartlist_count; /* Number defined */
699 extern uschar *log_buffer; /* For constructing log entries */
700 extern int log_default[]; /* Initialization list for log_selector */
701 extern uschar *log_file_path; /* If unset, use default */
702 extern int log_notall[]; /* Log options excluded from +all */
703 extern bit_table log_options[]; /* Table of options */
704 extern int log_options_count; /* Size of table */
705 extern int log_reject_target; /* Target log for ACL rejections */
706 extern unsigned int log_selector[]; /* Bit map of logging options */
707 extern uschar *log_selector_string; /* As supplied in the config */
708 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
709 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
710 extern uschar *login_sender_address; /* The actual sender address */
711 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
712 extern int lookup_list_count; /* Number of entries in the list */
713 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
714 extern int lookup_open_max; /* Max lookup files to cache */
715 extern uschar *lookup_value; /* Value looked up from file */
717 extern macro_item *macros; /* Configuration macros */
718 extern macro_item *macros_user; /* Non-builtin configuration macros */
719 extern macro_item *mlast; /* Last item in macro list */
720 extern uschar *mailstore_basename; /* For mailstore deliveries */
721 #ifdef WITH_CONTENT_SCAN
722 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
724 extern int max_received_linelength;/* What it says */
725 extern int max_username_length; /* For systems with broken getpwnam() */
726 extern int message_age; /* In seconds */
727 extern uschar *message_body; /* Start of message body for filter */
728 extern uschar *message_body_end; /* End of message body for filter */
729 extern BOOL message_body_newlines; /* FALSE => remove newlines */
730 extern int message_body_size; /* Sic */
731 extern int message_body_visible; /* Amount visible in message_body */
732 extern int message_ended; /* State of message reading and how ended */
733 extern uschar *message_headers; /* When built */
734 extern uschar message_id_option[]; /* -E<message-id> for use as option */
735 extern uschar *message_id_external; /* External form of following */
736 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
737 extern uschar *message_id_text; /* Expanded to form message_id */
738 extern int message_linecount; /* As it says */
739 extern BOOL message_logs; /* TRUE to write message logs */
740 extern int message_size; /* Size of message */
741 extern uschar *message_size_limit; /* As it says */
743 extern BOOL message_smtputf8; /* Internationalized mail handling */
744 extern int message_utf8_downconvert; /* convert from utf8 */
745 const extern pcre2_code *regex_UTF8; /* For recognizing SMTPUTF8 settings */
747 extern uschar message_subdir[]; /* Subdirectory for messages */
748 extern uschar *message_reference; /* Reference for error messages */
750 /* MIME ACL expandables */
751 #ifdef WITH_CONTENT_SCAN
752 extern int mime_anomaly_level;
753 extern const uschar *mime_anomaly_text;
754 extern uschar *mime_boundary;
755 extern uschar *mime_charset;
756 extern uschar *mime_content_description;
757 extern uschar *mime_content_disposition;
758 extern uschar *mime_content_id;
759 extern unsigned int mime_content_size;
760 extern uschar *mime_content_transfer_encoding;
761 extern uschar *mime_content_type;
762 extern uschar *mime_decoded_filename;
763 extern uschar *mime_filename;
764 extern int mime_is_multipart;
765 extern int mime_is_coverletter;
766 extern int mime_is_rfc822;
767 extern int mime_part_count;
770 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
772 extern uid_t *never_users; /* List of uids never to be used */
773 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
775 extern const int on; /* For setsockopt */
776 extern const int off;
778 extern optionlist optionlist_auths[]; /* These option lists are made */
779 extern int optionlist_auths_size; /* global so that readconf can */
780 extern optionlist optionlist_routers[]; /* see them for printing out */
781 extern int optionlist_routers_size; /* the options. */
782 extern optionlist optionlist_transports[];
783 extern int optionlist_transports_size;
785 extern uid_t original_euid; /* Original effective uid */
786 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
787 extern uschar *originator_login; /* Login of same */
788 extern uschar *originator_name; /* Full name of same */
789 extern uid_t originator_uid; /* Uid of ditto */
790 extern uschar *override_local_interfaces; /* Value of -oX argument */
791 extern uschar *override_pid_file_path; /* Value of -oP argument */
793 extern pcre2_general_context * pcre_gen_ctx; /* pcre memory management */
794 extern pcre2_compile_context * pcre_cmp_ctx;
795 extern pcre2_match_context * pcre_mtc_ctx;
797 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
798 extern uschar *pid_file_path; /* For writing daemon pids */
799 #ifndef DISABLE_PIPE_CONNECT
800 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
802 extern uschar *pipelining_advertise_hosts; /* As it says */
804 extern BOOL prdr_enable; /* As it says */
805 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
807 extern BOOL preserve_message_logs; /* Save msglog files */
808 extern uschar *primary_hostname; /* Primary name of this computer */
809 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
810 extern uschar *process_info; /* For SIGUSR1 output */
811 extern int process_info_len;
812 extern uschar *process_log_path; /* Alternate path */
813 extern const uschar *process_purpose; /* for debug output */
814 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
816 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
817 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
818 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
819 extern int proxy_external_port; /* Port on remote interface of proxy */
820 extern uschar *proxy_local_address; /* IP of local interface of proxy */
821 extern int proxy_local_port; /* Port on local interface of proxy */
822 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
823 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
826 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
827 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
828 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
830 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
831 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
832 extern uschar *queue_domains; /* Queue these domains */
833 #ifndef DISABLE_QUEUE_RAMP
834 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
836 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
837 /* immediate children */
838 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
839 extern int queue_run_pipe; /* Pipe for synchronizing */
840 extern int queue_interval; /* Queue running interval */
841 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
842 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
843 extern BOOL queue_only; /* TRUE to disable immediate delivery */
844 extern int queue_only_load; /* Max load before auto-queue */
845 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
846 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
847 extern BOOL queue_only_override; /* Allow override from command line */
848 extern BOOL queue_run_in_order; /* As opposed to random */
849 extern uschar *queue_run_max; /* Max queue runners */
850 extern unsigned queue_size; /* items in queue */
851 extern time_t queue_size_next; /* next time to evaluate queue_size */
852 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
854 extern unsigned int random_seed; /* Seed for random numbers */
855 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
856 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
857 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
858 extern uschar *raw_active_hostname; /* Pre-expansion */
859 extern uschar *raw_sender; /* Before rewriting */
860 extern uschar **raw_recipients; /* Before rewriting */
861 extern int raw_recipients_count;
862 extern const uschar * rc_names[]; /* Mostly for debug output */
863 extern int rcpt_count; /* Count of RCPT commands in a message */
864 extern int rcpt_fail_count; /* Those that got 5xx */
865 extern int rcpt_defer_count; /* Those that got 4xx */
866 extern gid_t real_gid; /* Real gid */
867 extern uid_t real_uid; /* Real user running program */
868 extern int receive_linecount; /* Mainly for BSMTP errors */
869 extern int receive_messagecount; /* Mainly for BSMTP errors */
870 extern int receive_timeout; /* For non-SMTP acceptance */
871 extern int received_count; /* Count of Received: headers */
872 extern uschar *received_for; /* For "for" field */
873 extern uschar *received_header_text; /* Definition of Received: header */
874 extern int received_headers_max; /* Max count of Received: headers */
875 extern struct timeval received_time; /* Time the message started to be received */
876 extern struct timeval received_time_complete; /* Time the message completed reception */
877 extern uschar *recipient_data; /* lookup data for recipients */
878 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
879 extern uschar *recipient_verify_failure; /* What went wrong */
880 extern int recipients_list_max; /* Maximum number fitting in list */
881 extern int recipients_max; /* Max permitted */
882 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
883 extern const pcre2_code *regex_AUTH; /* For recognizing AUTH settings */
884 extern const pcre2_code *regex_check_dns_names; /* For DNS name checking */
885 extern const pcre2_code *regex_From; /* For recognizing "From_" lines */
886 extern const pcre2_code *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
887 extern const pcre2_code *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
888 #ifdef EXPERIMENTAL_ESMTP_LIMITS
889 extern const pcre2_code *regex_LIMITS; /* For recognizing LIMITS */
891 extern const pcre2_code *regex_PIPELINING; /* For recognizing PIPELINING */
892 extern const pcre2_code *regex_SIZE; /* For recognizing SIZE settings */
893 #ifndef DISABLE_PIPE_CONNECT
894 extern const pcre2_code *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
896 extern const pcre2_code *regex_ismsgid; /* Compiled r.e. for message ID */
897 extern const pcre2_code *regex_smtp_code; /* For recognizing SMTP codes */
898 extern const uschar *regex_vars[]; /* $regexN variables */
899 #ifdef WHITELIST_D_MACROS
900 extern const pcre2_code *regex_whitelisted_macro; /* For -D macro values */
902 #ifdef WITH_CONTENT_SCAN
903 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
905 extern int remote_delivery_count; /* Number of remote addresses */
906 extern int remote_max_parallel; /* Maximum parallel delivery */
907 extern uschar *remote_sort_domains; /* Remote domain sorting order */
908 extern retry_config *retries; /* Chain of retry config information */
909 extern int retry_data_expire; /* When to expire retry data */
910 extern int retry_interval_max; /* Absolute maximum */
911 extern int retry_maximum_timeout; /* The maximum timeout */
912 extern uschar *return_path; /* Return path for a message */
913 extern BOOL return_path_remove; /* Remove return-path headers */
914 extern int rewrite_existflags; /* Indicate which headers have rewrites */
915 extern uschar *rfc1413_hosts; /* RFC hosts */
916 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
917 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
918 extern uid_t root_gid; /* The gid for root */
919 extern uid_t root_uid; /* The uid for root */
920 extern router_info routers_available[];/* Vector of available routers */
921 extern router_instance *routers; /* Chain of instantiated routers */
922 extern router_instance router_defaults;/* Default values */
923 extern uschar *router_name; /* Name of router last started */
924 extern tree_node *router_var; /* Variables set by router */
925 extern ip_address_item *running_interfaces; /* Host's running interfaces */
926 extern uschar *running_status; /* Flag string for testing */
927 extern int runrc; /* rc from ${run} */
929 extern uschar *search_error_message; /* Details of lookup problem */
930 extern uschar *self_hostname; /* Self host after routing->directors */
931 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
932 extern uschar *sender_address_data; /* address_data from sender verify */
933 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
934 extern uschar *sender_data; /* lookup result for senders */
935 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
936 extern uschar *sender_fullhost; /* Sender host name + address */
937 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
938 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
939 extern uschar **sender_host_aliases; /* Points to list of alias names */
940 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
941 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
942 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
943 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
944 extern uschar *sender_rate; /* Sender rate computed by ACL */
945 extern uschar *sender_rate_limit; /* Configured rate limit */
946 extern uschar *sender_rate_period; /* Configured smoothing period */
947 extern uschar *sender_rcvhost; /* Host data for Received: */
948 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
949 extern uschar *sender_verify_failure; /* What went wrong */
950 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
951 extern address_item *sender_verified_failed; /* The one that caused denial */
952 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
953 extern int sending_port; /* Port of outgoing interface */
954 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
955 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
956 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
957 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
958 extern int smtp_accept_count; /* Count of connections */
959 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
960 extern int smtp_accept_max; /* Max SMTP connections */
961 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
962 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
963 extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
964 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
965 extern int smtp_accept_queue; /* Queue after so many connections */
966 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
967 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
968 extern uschar *smtp_active_hostname; /* Hostname for this message */
969 extern int smtp_backlog_monitor; /* listen backlog level to log */
970 extern uschar *smtp_banner; /* Banner string (to be expanded) */
971 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
972 extern int smtp_ch_index; /* Index in smtp_connection_had */
973 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
974 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
975 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
976 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
977 extern int smtp_connect_backlog; /* Max backlog permitted */
978 extern double smtp_delay_mail; /* Current MAIL delay */
979 extern double smtp_delay_rcpt; /* Current RCPT delay */
980 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
981 extern uschar *smtp_etrn_command; /* Command to run */
982 extern BOOL smtp_etrn_serialize; /* Only one at once */
983 extern FILE *smtp_in; /* Incoming SMTP input file */
984 extern int smtp_listen_backlog; /* Current listener socket backlog, if monitored */
985 extern int smtp_load_reserve; /* Only from reserved if load > this */
986 extern int smtp_mailcmd_count; /* Count of MAIL commands */
987 extern int smtp_mailcmd_max; /* Limit for MAIL commands */
988 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
989 extern int smtp_max_unknown_commands; /* As it says */
990 extern uschar *smtp_names[]; /* decode for command codes */
991 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
992 extern FILE *smtp_out; /* Incoming SMTP output file */
993 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
994 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
995 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
996 extern uschar *smtp_read_error; /* Message for SMTP input error */
997 extern int smtp_receive_timeout; /* Applies to each received line */
998 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
999 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
1000 extern BOOL smtp_return_error_details; /* TRUE to return full info */
1001 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
1002 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
1003 extern int smtp_rlm_limit; /* Max delay */
1004 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
1005 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
1006 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
1007 extern int smtp_rlr_limit; /* Max delay */
1008 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
1009 extern unsigned smtp_peer_options; /* Global flags for passed connections */
1010 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
1012 extern uschar *smtputf8_advertise_hosts; /* ingress control */
1015 #ifdef WITH_CONTENT_SCAN
1016 extern uschar *spamd_address; /* address for the spamassassin daemon */
1017 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
1018 extern uschar *spam_report; /* the spamd report (multiline) */
1019 extern uschar *spam_action; /* the spamd recommended-action */
1020 extern uschar *spam_score; /* the spam score (float) */
1021 extern uschar *spam_score_int; /* spam_score * 10 (int) */
1024 extern uschar *spf_guess; /* spf best-guess record */
1025 extern uschar *spf_header_comment; /* spf header comment */
1026 extern uschar *spf_received; /* Received-SPF: header */
1027 extern uschar *spf_result; /* spf result in string form */
1028 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
1029 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
1030 extern uschar *spf_smtp_comment_template;
1031 /* template to construct the spf comment by libspf2 */
1033 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1034 extern FILE *spool_data_file; /* handle for -D file */
1035 extern uschar *spool_directory; /* Name of spool directory */
1036 extern BOOL spool_wireformat; /* can write wireformat -D files */
1038 extern uschar *srs_recipient; /* SRS recipient */
1040 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1041 extern int string_datestamp_offset;/* After insertion by string_format */
1042 extern int string_datestamp_length;/* After insertion by string_format */
1043 extern int string_datestamp_type; /* After insertion by string_format */
1044 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1045 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1046 extern const uschar *submission_domain;/* Domain for submission mode */
1047 extern const uschar *submission_name; /* User name set from ACL */
1048 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1049 extern int syslog_facility; /* As defined by Syslog.h */
1050 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1051 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1052 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1053 extern uschar *system_filter; /* Name of system filter file */
1055 extern uschar *system_filter_directory_transport; /* Transports for the */
1056 extern uschar *system_filter_file_transport; /* system filter */
1057 extern uschar *system_filter_pipe_transport;
1058 extern uschar *system_filter_reply_transport;
1060 extern gid_t system_filter_gid; /* Gid for running system filter */
1061 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1062 extern uid_t system_filter_uid; /* Uid for running system filter */
1063 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1065 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1066 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1067 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1068 #ifdef USE_TCP_WRAPPERS
1069 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1071 extern int test_harness_load_avg; /* For use when testing */
1072 extern int thismessage_size_limit; /* Limit for this message */
1073 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1074 #ifdef MEASURE_TIMING
1075 extern struct timeval timestamp_startup; /* For development measurements */
1078 extern uschar *transport_name; /* Name of transport last started */
1079 extern int transport_count; /* Count of bytes transported */
1080 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1081 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1082 extern int transport_filter_timeout; /* Timeout for same */
1084 extern transport_info transports_available[]; /* Vector of available transports */
1085 extern transport_instance *transports; /* Chain of instantiated transports */
1086 extern transport_instance transport_defaults; /* Default values */
1088 extern int transport_write_timeout;/* Set to time out individual writes */
1090 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1091 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1092 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1093 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1095 extern gid_t *trusted_groups; /* List of trusted groups */
1096 extern uid_t *trusted_users; /* List of trusted users */
1097 extern uschar *timezone_string; /* Required timezone setting */
1099 extern uschar *unknown_login; /* To use when login id unknown */
1100 extern uschar *unknown_username; /* Ditto */
1101 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1102 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1103 extern uschar *uucp_from_sender; /* For building the sender */
1105 extern uschar *warn_message_file; /* Template for warning messages */
1106 extern uschar *warnmsg_delay; /* String form of delay time */
1107 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1108 extern BOOL write_rejectlog; /* Control of reject logging */
1110 extern uschar *verify_mode; /* Running a router in verify mode */
1111 extern uschar *version_copyright; /* Copyright notice */
1112 extern uschar *version_date; /* Date of compilation */
1113 extern uschar *version_cnumber; /* Compile number */
1114 extern uschar *version_string; /* Version string */
1116 extern int warning_count; /* Delay warnings sent for this msg */
1118 /* End of globals.h */
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