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 daemon_scion :1; /* Ancestor proc is daemon, and not re-exec'd */
203 BOOL debug_daemon :1; /* Debug the daemon process only */
204 BOOL deliver_firsttime :1; /* True for first delivery attempt */
205 BOOL deliver_force :1; /* TRUE if delivery was forced */
206 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
207 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
208 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
209 BOOL deliver_selectstring_regex :1; /* String is regex */
210 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
211 BOOL disable_callout_flush :1; /* Don't flush before callouts */
212 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
213 BOOL disable_logging :1; /* Disables log writing when TRUE */
215 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
216 BOOL dkim_init_done :1; /* lazy-init status */
219 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
220 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
221 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
223 BOOL dont_deliver :1; /* TRUE for -N option */
224 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
226 BOOL enable_dollar_recipients :1; /* Make $recipients available */
227 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
229 BOOL filter_running :1; /* TRUE while running a filter */
231 BOOL header_rewritten :1; /* TRUE if header changed by router */
232 BOOL helo_verified :1; /* True if HELO verified */
233 BOOL helo_verify_failed :1; /* True if attempt failed */
234 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
235 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
237 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
238 BOOL is_inetd :1; /* True for inetd calls */
240 BOOL local_error_message :1; /* True if handling one of these */
241 BOOL log_testing_mode :1; /* TRUE in various testing modes */
243 #ifdef WITH_CONTENT_SCAN
244 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
246 BOOL no_multiline_responses :1; /* For broken clients */
248 BOOL parse_allow_group :1; /* Allow group syntax */
249 BOOL parse_found_group :1; /* In the middle of a group */
250 BOOL pipelining_enable :1; /* As it says */
251 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
252 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
255 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
256 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
257 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
258 BOOL queue_run_force :1; /* TRUE to force during queue run */
259 BOOL queue_run_local :1; /* Local deliveries only in queue run */
260 BOOL queue_running :1; /* TRUE for queue running process and */
261 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
263 BOOL really_exim :1; /* FALSE in utilities */
264 BOOL receive_call_bombout :1; /* Flag for crashing log */
265 BOOL recipients_discarded :1; /* By an ACL */
266 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
268 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
269 BOOL sender_address_forced :1; /* Set by -f */
270 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
271 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
272 BOOL sender_local :1; /* TRUE for local senders */
273 BOOL sender_name_forced :1; /* Set by -F */
274 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
275 BOOL smtp_authenticated :1; /* Sending client has authenticated */
276 #ifndef DISABLE_PIPE_CONNECT
277 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPECONNECT */
278 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
279 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
281 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
282 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
283 BOOL smtp_in_quit :1; /* server noted QUIT command */
284 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
285 BOOL submission_mode :1; /* Can be forced from ACL */
286 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
287 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
288 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
289 BOOL system_filtering :1; /* TRUE when running system filter */
291 BOOL taint_check_slow :1; /* malloc/mmap are not returning distinct ranges */
292 BOOL testsuite_delays :1; /* interprocess sequencing delays, under testsuite */
293 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
294 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
295 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
296 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
297 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
298 BOOL timestamps_utc :1; /* Use UTC for all times */
299 BOOL transport_filter_timed_out :1; /* True if it did */
300 BOOL trusted_caller :1; /* Caller is trusted */
301 BOOL trusted_config :1; /* Configuration file is trusted */
305 /* General global variables */
307 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
308 extern uschar *add_environment; /* List of environment variables to add */
309 extern header_line *acl_added_headers; /* Headers added by an ACL */
310 extern tree_node *acl_anchor; /* Tree of named ACLs */
311 extern uschar *acl_arg[9]; /* Argument to ACL call */
312 extern int acl_narg; /* Number of arguments to ACL call */
313 extern int acl_level; /* Nesting depth and debug indent */
314 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
315 #ifdef WITH_CONTENT_SCAN
316 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
318 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
319 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
320 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
321 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
322 extern uschar *acl_smtp_data; /* ACL run after DATA received */
324 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
325 const extern pcre2_code *regex_PRDR; /* For recognizing PRDR settings */
328 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
330 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
331 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
332 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
333 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
334 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
335 #ifdef WITH_CONTENT_SCAN
336 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
338 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
339 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
340 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
341 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
342 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
343 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
344 extern tree_node *acl_var_c; /* ACL connection variables */
345 extern tree_node *acl_var_m; /* ACL message variables */
346 extern uschar *acl_verify_message; /* User message for verify failure */
347 extern string_item *acl_warn_logged; /* Logged lines */
348 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
349 extern uschar *acl_wherenames[]; /* Names for messages */
350 extern address_item *addr_duplicate; /* Duplicate address list */
351 extern address_item address_defaults; /* Default data for address item */
352 extern uschar *address_file; /* Name of file when delivering to one */
353 extern uschar *address_pipe; /* Pipe command when delivering to one */
354 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
355 extern int addresslist_count; /* Number defined */
356 extern gid_t *admin_groups; /* List of admin groups */
357 extern BOOL allow_domain_literals; /* As it says */
358 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
359 #ifdef EXPERIMENTAL_ARC
360 extern struct arc_set *arc_received; /* highest ARC instance evaluation struct */
361 extern int arc_received_instance; /* highest ARC instance number in headers */
362 extern int arc_oldest_pass; /* lowest passing instance number in headers */
363 extern const uschar *arc_state; /* verification state */
364 extern const uschar *arc_state_reason;
366 extern BOOL allow_utf8_domains; /* For experimenting */
367 extern uschar *authenticated_fail_id; /* ID that failed authentication */
368 extern uschar *authenticated_id; /* ID that was authenticated */
369 extern uschar *authenticated_sender; /* From AUTH on MAIL */
370 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
371 extern uschar *authenticator_name; /* for debug and error messages */
372 extern uschar *auth_advertise_hosts; /* Only advertise to these */
373 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
374 extern auth_instance *auths; /* Chain of instantiated auths */
375 extern auth_instance auth_defaults; /* Default values */
376 extern uschar *auth_defer_msg; /* Error message for log */
377 extern uschar *auth_defer_user_msg; /* Error message for user */
378 extern const uschar *auth_vars[]; /* $authn variables */
379 extern int auto_thaw; /* Auto-thaw interval */
380 #ifdef WITH_CONTENT_SCAN
381 extern int av_failed; /* TRUE if the AV process failed */
382 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
385 extern uschar *base62_chars; /* Table of base-62 characters */
386 extern uschar *bi_command; /* Command for -bi option */
387 extern uschar *big_buffer; /* Used for various temp things */
388 extern int big_buffer_size; /* Current size (can expand) */
389 #ifdef EXPERIMENTAL_BRIGHTMAIL
390 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
391 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
392 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
393 extern uschar *bmi_config_file; /* Brightmail config file */
394 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
395 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
396 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
398 extern int bsmtp_transaction_linecount; /* Start of last transaction */
399 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
400 extern uschar *bounce_message_file; /* Template file */
401 extern uschar *bounce_message_text; /* One-liner */
402 extern uschar *bounce_recipient; /* When writing an errmsg */
403 extern BOOL bounce_return_body; /* Include body in returned message */
404 extern int bounce_return_linesize_limit; /* Max line length in return */
405 extern BOOL bounce_return_message; /* Include message in bounce */
406 extern int bounce_return_size_limit; /* Max amount to return */
407 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
409 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
410 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
411 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
412 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
413 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
414 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
415 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
416 extern int check_log_inodes; /* Minimum for message acceptance */
417 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
418 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
419 extern int check_spool_inodes; /* Minimum for message acceptance */
420 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
421 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
422 extern unsigned chunking_datasize;
423 extern unsigned chunking_data_left;
424 extern chunking_state_t chunking_state;
425 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
426 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
427 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
428 #ifndef DISABLE_CLIENT_CMD_LOG
429 extern gstring *client_cmd_log; /* debug log of client cmds & responses */
431 extern int clmacro_count; /* Number of command line macros */
432 extern uschar *clmacros[]; /* Copy of them, for re-exec */
433 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
434 extern int connection_max_messages;/* Max down one SMTP connection */
435 extern FILE *config_file; /* Configuration file */
436 extern const uschar *config_filename; /* Configuration file name */
437 extern gid_t config_gid; /* Additional group owner */
438 extern int config_lineno; /* Line number */
439 extern uschar *config_main_filelist; /* List of possible config files */
440 extern uschar *config_main_filename; /* File name actually used */
441 extern uschar *config_main_directory; /* Directory where the main config file was found */
442 extern uid_t config_uid; /* Additional owner */
443 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
444 extern BOOL continue_proxy_dane; /* proxied conn is DANE */
445 extern uschar *continue_proxy_sni; /* proxied conn SNI */
446 extern uschar *continue_hostname; /* Host for continued delivery */
447 extern uschar *continue_host_address; /* IP address for ditto */
448 extern int continue_sequence; /* Sequence num for continued delivery */
449 extern uschar *continue_transport; /* Transport for continued delivery */
450 #ifdef EXPERIMENTAL_ESMTP_LIMITS
451 extern unsigned continue_limit_mail; /* Peer advertised limit */
452 extern unsigned continue_limit_rcpt;
453 extern unsigned continue_limit_rcptdom;
457 extern uschar *csa_status; /* Client SMTP Authorization result */
460 unsigned callout_hold_only:1; /* Conn is only for verify callout */
461 unsigned delivery:1; /* When to attempt */
462 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
463 unsigned is_tls:1; /* Conn has TLS active */
464 client_conn_ctx cctx; /* Open connection */
465 int nrcpt; /* Count of addresses */
466 uschar * transport; /* Name of transport */
467 uschar * interface; /* (address of) */
468 uschar * snd_ip; /* sending_ip_address */
469 int snd_port; /* sending_port */
470 unsigned peer_options; /* smtp_peer_options */
471 host_item host; /* Host used */
472 address_item addr; /* (Chain of) addresses */
474 extern cut_t cutthrough; /* Deliver-concurrently */
476 extern int daemon_notifier_fd; /* Unix socket for notifications */
477 extern uschar *daemon_smtp_port; /* Can be a list of ports */
478 extern int daemon_startup_retries; /* Number of times to retry */
479 extern int daemon_startup_sleep; /* Sleep between retries */
481 #ifdef EXPERIMENTAL_DCC
482 extern BOOL dcc_direct_add_header; /* directly add header */
483 extern uschar *dcc_header; /* dcc header */
484 extern uschar *dcc_result; /* dcc result */
485 extern uschar *dccifd_address; /* address of the dccifd daemon */
486 extern uschar *dccifd_options; /* options for the dccifd daemon */
489 extern int debug_fd; /* The fd for debug_file */
490 extern FILE *debug_file; /* Where to write debugging info */
491 extern int debug_notall[]; /* Debug options excluded from +all */
492 extern bit_table debug_options[]; /* Table of debug options */
493 extern int debug_options_count; /* Size of table */
494 extern unsigned debug_pretrigger_bsize;
495 extern uschar *debug_pretrigger_buf; /* circular buffer for precapture */
496 extern BOOL debug_store; /* Do extra checks on store_reset */
497 extern uschar debuglog_name[LOG_NAME_SIZE]; /* ACL-init debug */
499 extern int delay_warning[]; /* Times between warnings */
500 extern uschar *delay_warning_condition; /* Condition string for warnings */
501 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
503 extern uschar *deliver_address_data; /* Arbitrary data for an address */
504 extern int deliver_datafile; /* FD for data part of message */
505 extern const uschar *deliver_domain; /* The local domain for delivery */
506 extern uschar *deliver_domain_data; /* From domain lookup */
507 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
508 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
509 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
510 extern time_t deliver_frozen_at; /* Time of freezing */
511 extern uschar *deliver_home; /* Home directory for pipes */
512 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
513 /* Remote host for filter */
514 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
515 extern int deliver_host_port; /* Address for remote delivery filter */
516 extern uschar *deliver_in_buffer; /* Buffer for copying file */
517 extern ino_t deliver_inode; /* Inode for appendfile */
518 extern uschar *deliver_localpart; /* The local part for delivery */
519 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
520 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
521 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
522 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
523 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
524 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
525 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
526 extern uschar *deliver_out_buffer; /* Buffer for copying file */
527 extern int deliver_queue_load_max; /* Different value for queue running */
528 extern address_item *deliver_recipients; /* Current set of addresses */
529 extern uschar *deliver_selectstring; /* For selecting by recipient */
530 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
531 #ifdef ENABLE_DISABLE_FSYNC
532 extern BOOL disable_fsync; /* Not for normal use */
534 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
537 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
538 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
539 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
540 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
541 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
542 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
543 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
544 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
545 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
546 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
547 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
548 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
549 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
550 extern uschar *dkim_verify_status; /* result for this signature */
551 extern uschar *dkim_verify_reason; /* result for this signature */
554 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
555 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
556 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
557 extern uschar *dmarc_status; /* Expansion variable, one word value */
558 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
559 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
560 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
563 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
564 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
565 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
566 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
567 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
569 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
571 extern int dns_retrans; /* Retransmission time setting */
572 extern int dns_retry; /* Number of retries */
573 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
574 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
575 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
576 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
577 extern uschar *dnslist_domain; /* DNS (black) list domain */
578 extern uschar *dnslist_matched; /* DNS (black) list matched key */
579 extern uschar *dnslist_text; /* DNS (black) list text message */
580 extern uschar *dnslist_value; /* DNS (black) list IP address */
581 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
582 extern int domainlist_count; /* Number defined */
584 /* This option is now a no-opt, retained for compatibility */
585 extern BOOL drop_cr; /* For broken local MUAs */
586 extern const uschar *driver_srcfile; /* For debug & errors */
587 extern int driver_srcline; /* For debug & errors */
589 extern unsigned int dtrigger_selector; /* when to start debug */
591 extern uschar *dsn_from; /* From: string for DSNs */
593 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
594 extern int errno_quota; /* Quota errno in this OS */
595 extern int error_handling; /* Error handling style */
596 extern uschar *errors_copy; /* For taking copies of errors */
597 extern uschar *errors_reply_to; /* Reply-to for error messages */
598 extern int errors_sender_rc; /* Return after message to sender*/
600 #ifndef DISABLE_EVENT
601 extern uschar *event_action; /* expansion for delivery events */
602 extern uschar *event_data; /* event data */
603 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
604 extern const uschar *event_name; /* event classification */
607 extern gid_t exim_gid; /* To be used with exim_uid */
608 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
609 extern uschar *exim_path; /* Path to exec exim */
610 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
611 extern uid_t exim_uid; /* Non-root uid for exim */
612 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
613 extern int expand_level; /* Nesting depth; indent for debug */
614 extern int expand_forbid; /* RDO flags for forbidding things */
615 extern int expand_nlength[]; /* Lengths of numbered strings */
616 extern int expand_nmax; /* Max numerical value */
617 extern const uschar *expand_nstring[]; /* Numbered strings */
618 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
619 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
621 extern int fake_response; /* Fake FAIL or DEFER response to data */
622 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
623 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
624 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
625 extern int filter_test; /* Filter test type */
626 extern uschar *filter_test_sfile; /* System filter test file */
627 extern uschar *filter_test_ufile; /* User filter test file */
628 extern uschar *filter_thisaddress; /* For address looping */
629 extern int finduser_retries; /* Retry count for getpwnam() */
630 extern uid_t fixed_never_users[]; /* Can't be overridden */
631 extern uschar *freeze_tell; /* Message on (some) freezings */
632 extern uschar *freeze_tell_config; /* The configured setting */
633 extern uschar *fudged_queue_times; /* For use in test harness */
635 extern uschar *gecos_name; /* To be expanded when pattern matches */
636 extern uschar *gecos_pattern; /* Pattern to match */
637 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
639 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
640 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
641 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
642 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
643 extern int header_insert_maxlen; /* Max for inserting headers */
644 extern int header_maxsize; /* Max total length for header */
645 extern int header_line_maxsize; /* Max for an individual line */
646 extern header_name header_names[]; /* Table of header names */
647 extern int header_names_size; /* Number of entries */
648 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
649 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
650 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
651 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
652 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
653 extern const uschar *hex_digits; /* Used in several places */
654 extern uschar *hold_domains; /* Hold up deliveries to these */
655 extern uschar *host_data; /* Obtained from lookup in ACL */
656 extern uschar *host_lookup; /* For which IP addresses are always looked up */
657 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
658 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
659 extern uschar *host_lookup_order; /* Order of host lookup types */
660 extern uschar *host_lookup_msg; /* Text for why it failed */
661 extern int host_number; /* For sharing spools */
662 extern uschar *host_number_string; /* For expanding */
663 extern uschar *hosts_require_helo; /* check for HELO/EHLO before MAIL */
664 extern uschar *host_reject_connection; /* Reject these hosts */
665 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
666 extern int hostlist_count; /* Number defined */
667 extern uschar *hosts_connection_nolog; /* Limits the logging option */
668 extern uschar *hosts_treat_as_local; /* For routing */
670 extern int ignore_bounce_errors_after; /* Keep them for this time. */
671 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
672 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
673 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
674 extern uschar *initial_cwd; /* The directory we where in at startup */
675 extern uschar *iterate_item; /* Item from iterate list */
677 extern int journal_fd; /* Fd for journal file */
679 extern uschar *keep_environment; /* Whitelist for environment variables */
680 extern int keep_malformed; /* Time to keep malformed messages */
682 extern uschar *eldap_dn; /* Where LDAP DNs are left */
683 #ifdef EXPERIMENTAL_ESMTP_LIMITS
684 extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
686 extern int load_average; /* Most recently read load average */
687 extern BOOL local_from_check; /* For adding Sender: (global value) */
688 extern uschar *local_from_prefix; /* Permitted prefixes */
689 extern uschar *local_from_suffix; /* Permitted suffixes */
690 extern uschar *local_interfaces; /* For forcing specific interfaces */
691 #ifdef HAVE_LOCAL_SCAN
692 extern uschar *local_scan_data; /* Text returned by local_scan() */
693 extern optionlist local_scan_options[];/* Option list for local_scan() */
694 extern int local_scan_options_count; /* Size of the list */
695 extern int local_scan_timeout; /* Timeout for local_scan() */
697 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
698 extern gid_t local_user_gid; /* As it says; may be set in routers */
699 extern uid_t local_user_uid; /* As it says; may be set in routers */
700 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
701 extern int localpartlist_count; /* Number defined */
702 extern uschar *log_buffer; /* For constructing log entries */
703 extern int log_default[]; /* Initialization list for log_selector */
704 extern uschar *log_file_path; /* If unset, use default */
705 extern int log_notall[]; /* Log options excluded from +all */
706 extern bit_table log_options[]; /* Table of options */
707 extern int log_options_count; /* Size of table */
708 extern int log_reject_target; /* Target log for ACL rejections */
709 extern unsigned int log_selector[]; /* Bit map of logging options */
710 extern uschar *log_selector_string; /* As supplied in the config */
711 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
712 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
713 extern uschar *login_sender_address; /* The actual sender address */
714 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
715 extern int lookup_list_count; /* Number of entries in the list */
716 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
717 extern int lookup_open_max; /* Max lookup files to cache */
718 extern uschar *lookup_value; /* Value looked up from file */
720 extern macro_item *macros; /* Configuration macros */
721 extern macro_item *macros_user; /* Non-builtin configuration macros */
722 extern macro_item *mlast; /* Last item in macro list */
723 extern uschar *mailstore_basename; /* For mailstore deliveries */
724 #ifdef WITH_CONTENT_SCAN
725 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
727 extern int max_received_linelength;/* What it says */
728 extern int max_username_length; /* For systems with broken getpwnam() */
729 extern int message_age; /* In seconds */
730 extern uschar *message_body; /* Start of message body for filter */
731 extern uschar *message_body_end; /* End of message body for filter */
732 extern BOOL message_body_newlines; /* FALSE => remove newlines */
733 extern int message_body_size; /* Sic */
734 extern int message_body_visible; /* Amount visible in message_body */
735 extern int message_ended; /* State of message reading and how ended */
736 extern uschar *message_headers; /* When built */
737 extern uschar message_id_option[]; /* -E<message-id> for use as option */
738 extern uschar *message_id_external; /* External form of following */
739 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
740 extern uschar *message_id_text; /* Expanded to form message_id */
741 extern int message_linecount; /* As it says */
742 extern BOOL message_logs; /* TRUE to write message logs */
743 extern int message_size; /* Size of message */
744 extern uschar *message_size_limit; /* As it says */
746 extern BOOL message_smtputf8; /* Internationalized mail handling */
747 extern int message_utf8_downconvert; /* convert from utf8 */
748 const extern pcre2_code *regex_UTF8; /* For recognizing SMTPUTF8 settings */
750 extern uschar message_subdir[]; /* Subdirectory for messages */
751 extern uschar *message_reference; /* Reference for error messages */
753 /* MIME ACL expandables */
754 #ifdef WITH_CONTENT_SCAN
755 extern int mime_anomaly_level;
756 extern const uschar *mime_anomaly_text;
757 extern uschar *mime_boundary;
758 extern uschar *mime_charset;
759 extern uschar *mime_content_description;
760 extern uschar *mime_content_disposition;
761 extern uschar *mime_content_id;
762 extern unsigned int mime_content_size;
763 extern uschar *mime_content_transfer_encoding;
764 extern uschar *mime_content_type;
765 extern uschar *mime_decoded_filename;
766 extern uschar *mime_filename;
767 extern int mime_is_multipart;
768 extern int mime_is_coverletter;
769 extern int mime_is_rfc822;
770 extern int mime_part_count;
773 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
775 extern uid_t *never_users; /* List of uids never to be used */
776 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
778 extern const int on; /* For setsockopt */
779 extern const int off;
781 extern optionlist optionlist_auths[]; /* These option lists are made */
782 extern int optionlist_auths_size; /* global so that readconf can */
783 extern optionlist optionlist_routers[]; /* see them for printing out */
784 extern int optionlist_routers_size; /* the options. */
785 extern optionlist optionlist_transports[];
786 extern int optionlist_transports_size;
788 extern uid_t original_euid; /* Original effective uid */
789 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
790 extern uschar *originator_login; /* Login of same */
791 extern uschar *originator_name; /* Full name of same */
792 extern uid_t originator_uid; /* Uid of ditto */
793 extern uschar *override_local_interfaces; /* Value of -oX argument */
794 extern uschar *override_pid_file_path; /* Value of -oP argument */
796 extern BOOL panic_coredump; /* SEGV rather than exit, on LOG_PANIC_DIE */
797 extern pcre2_general_context * pcre_gen_ctx; /* pcre memory management */
798 extern pcre2_compile_context * pcre_gen_cmp_ctx;
799 extern pcre2_match_context * pcre_gen_mtc_ctx;
800 extern pcre2_general_context * pcre_mlc_ctx;
801 extern pcre2_compile_context * pcre_mlc_cmp_ctx;
803 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
804 extern uschar *pid_file_path; /* For writing daemon pids */
805 #ifndef DISABLE_PIPE_CONNECT
806 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
808 extern uschar *pipelining_advertise_hosts; /* As it says */
810 extern BOOL prdr_enable; /* As it says */
811 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
813 extern BOOL preserve_message_logs; /* Save msglog files */
814 extern uschar *primary_hostname; /* Primary name of this computer */
815 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
816 extern uschar *process_info; /* For SIGUSR1 output */
817 extern int process_info_len;
818 extern uschar *process_log_path; /* Alternate path */
819 extern const uschar *process_purpose; /* for debug output */
820 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
822 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
823 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
824 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
825 extern int proxy_external_port; /* Port on remote interface of proxy */
826 extern uschar *proxy_local_address; /* IP of local interface of proxy */
827 extern int proxy_local_port; /* Port on local interface of proxy */
828 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
829 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
832 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
833 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
834 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
836 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
837 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
838 extern uschar *queue_domains; /* Queue these domains */
839 #ifndef DISABLE_QUEUE_RAMP
840 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
842 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
843 /* immediate children */
844 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
845 extern int queue_run_pipe; /* Pipe for synchronizing */
846 extern int queue_interval; /* Queue running interval */
847 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
848 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
849 extern BOOL queue_only; /* TRUE to disable immediate delivery */
850 extern int queue_only_load; /* Max load before auto-queue */
851 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
852 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
853 extern BOOL queue_only_override; /* Allow override from command line */
854 extern BOOL queue_run_in_order; /* As opposed to random */
855 extern uschar *queue_run_max; /* Max queue runners */
856 extern unsigned queue_size; /* items in queue */
857 extern time_t queue_size_next; /* next time to evaluate queue_size */
858 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
860 extern unsigned int random_seed; /* Seed for random numbers */
861 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
862 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
863 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
864 extern uschar *raw_active_hostname; /* Pre-expansion */
865 extern uschar *raw_sender; /* Before rewriting */
866 extern uschar **raw_recipients; /* Before rewriting */
867 extern int raw_recipients_count;
868 extern const uschar * rc_names[]; /* Mostly for debug output */
869 extern int rcpt_count; /* Count of RCPT commands in a message */
870 extern int rcpt_fail_count; /* Those that got 5xx */
871 extern int rcpt_defer_count; /* Those that got 4xx */
872 extern gid_t real_gid; /* Real gid */
873 extern uid_t real_uid; /* Real user running program */
874 extern int receive_linecount; /* Mainly for BSMTP errors */
875 extern int receive_messagecount; /* Mainly for BSMTP errors */
876 extern int receive_timeout; /* For non-SMTP acceptance */
877 extern int received_count; /* Count of Received: headers */
878 extern uschar *received_for; /* For "for" field */
879 extern uschar *received_header_text; /* Definition of Received: header */
880 extern int received_headers_max; /* Max count of Received: headers */
881 extern struct timeval received_time; /* Time the message started to be received */
882 extern struct timeval received_time_complete; /* Time the message completed reception */
883 extern uschar *recipient_data; /* lookup data for recipients */
884 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
885 extern uschar *recipient_verify_failure; /* What went wrong */
886 extern int recipients_list_max; /* Maximum number fitting in list */
887 extern int recipients_max; /* Max permitted */
888 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
889 extern const pcre2_code *regex_AUTH; /* For recognizing AUTH settings */
890 extern const pcre2_code *regex_check_dns_names; /* For DNS name checking */
891 extern const pcre2_code *regex_From; /* For recognizing "From_" lines */
892 extern const pcre2_code *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
893 extern const pcre2_code *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
894 #ifdef EXPERIMENTAL_ESMTP_LIMITS
895 extern const pcre2_code *regex_LIMITS; /* For recognizing LIMITS */
897 extern const pcre2_code *regex_PIPELINING; /* For recognizing PIPELINING */
898 extern const pcre2_code *regex_SIZE; /* For recognizing SIZE settings */
899 #ifndef DISABLE_PIPE_CONNECT
900 extern const pcre2_code *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
902 extern int regex_cachesize; /* number of entries */
903 extern const pcre2_code *regex_ismsgid; /* Compiled r.e. for message ID */
904 extern const pcre2_code *regex_smtp_code; /* For recognizing SMTP codes */
905 extern const uschar *regex_vars[]; /* $regexN variables */
906 #ifdef WHITELIST_D_MACROS
907 extern const pcre2_code *regex_whitelisted_macro; /* For -D macro values */
909 #ifdef WITH_CONTENT_SCAN
910 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
912 extern int remote_delivery_count; /* Number of remote addresses */
913 extern int remote_max_parallel; /* Maximum parallel delivery */
914 extern uschar *remote_sort_domains; /* Remote domain sorting order */
915 extern retry_config *retries; /* Chain of retry config information */
916 extern int retry_data_expire; /* When to expire retry data */
917 extern int retry_interval_max; /* Absolute maximum */
918 extern int retry_maximum_timeout; /* The maximum timeout */
919 extern uschar *return_path; /* Return path for a message */
920 extern BOOL return_path_remove; /* Remove return-path headers */
921 extern int rewrite_existflags; /* Indicate which headers have rewrites */
922 extern uschar *rfc1413_hosts; /* RFC hosts */
923 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
924 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
925 extern uid_t root_gid; /* The gid for root */
926 extern uid_t root_uid; /* The uid for root */
927 extern router_info routers_available[];/* Vector of available routers */
928 extern router_instance *routers; /* Chain of instantiated routers */
929 extern router_instance router_defaults;/* Default values */
930 extern uschar *router_name; /* Name of router last started */
931 extern tree_node *router_var; /* Variables set by router */
932 extern ip_address_item *running_interfaces; /* Host's running interfaces */
933 extern uschar *running_status; /* Flag string for testing */
934 extern int runrc; /* rc from ${run} */
936 extern uschar *search_error_message; /* Details of lookup problem */
937 extern uschar *self_hostname; /* Self host after routing->directors */
938 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
939 extern uschar *sender_address_data; /* address_data from sender verify */
940 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
941 extern uschar *sender_data; /* lookup result for senders */
942 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
943 extern uschar *sender_fullhost; /* Sender host name + address */
944 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
945 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
946 extern uschar **sender_host_aliases; /* Points to list of alias names */
947 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
948 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
949 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
950 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
951 extern uschar *sender_rate; /* Sender rate computed by ACL */
952 extern uschar *sender_rate_limit; /* Configured rate limit */
953 extern uschar *sender_rate_period; /* Configured smoothing period */
954 extern uschar *sender_rcvhost; /* Host data for Received: */
955 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
956 extern uschar *sender_verify_failure; /* What went wrong */
957 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
958 extern address_item *sender_verified_failed; /* The one that caused denial */
959 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
960 extern int sending_port; /* Port of outgoing interface */
961 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
962 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
963 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
964 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
965 extern int smtp_accept_count; /* Count of connections */
966 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
967 extern int smtp_accept_max; /* Max SMTP connections */
968 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
969 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
970 extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
971 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
972 extern int smtp_accept_queue; /* Queue after so many connections */
973 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
974 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
975 extern uschar *smtp_active_hostname; /* Hostname for this message */
976 extern int smtp_backlog_monitor; /* listen backlog level to log */
977 extern uschar *smtp_banner; /* Banner string (to be expanded) */
978 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
979 extern int smtp_ch_index; /* Index in smtp_connection_had */
980 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
981 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
982 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
983 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
984 extern int smtp_connect_backlog; /* Max backlog permitted */
985 extern double smtp_delay_mail; /* Current MAIL delay */
986 extern double smtp_delay_rcpt; /* Current RCPT delay */
987 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
988 extern uschar *smtp_etrn_command; /* Command to run */
989 extern BOOL smtp_etrn_serialize; /* Only one at once */
990 extern FILE *smtp_in; /* Incoming SMTP input file */
991 extern int smtp_listen_backlog; /* Current listener socket backlog, if monitored */
992 extern int smtp_load_reserve; /* Only from reserved if load > this */
993 extern int smtp_mailcmd_count; /* Count of MAIL commands */
994 extern int smtp_mailcmd_max; /* Limit for MAIL commands */
995 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
996 extern int smtp_max_unknown_commands; /* As it says */
997 extern uschar *smtp_names[]; /* decode for command codes */
998 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
999 extern FILE *smtp_out; /* Incoming SMTP output file */
1000 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
1001 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
1002 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
1003 extern uschar *smtp_read_error; /* Message for SMTP input error */
1004 extern int smtp_receive_timeout; /* Applies to each received line */
1005 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
1006 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
1007 extern BOOL smtp_return_error_details; /* TRUE to return full info */
1008 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
1009 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
1010 extern int smtp_rlm_limit; /* Max delay */
1011 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
1012 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
1013 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
1014 extern int smtp_rlr_limit; /* Max delay */
1015 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
1016 extern unsigned smtp_peer_options; /* Global flags for passed connections */
1017 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
1019 extern uschar *smtputf8_advertise_hosts; /* ingress control */
1022 #ifdef WITH_CONTENT_SCAN
1023 extern uschar *spamd_address; /* address for the spamassassin daemon */
1024 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
1025 extern uschar *spam_report; /* the spamd report (multiline) */
1026 extern uschar *spam_action; /* the spamd recommended-action */
1027 extern uschar *spam_score; /* the spam score (float) */
1028 extern uschar *spam_score_int; /* spam_score * 10 (int) */
1031 extern uschar *spf_guess; /* spf best-guess record */
1032 extern uschar *spf_header_comment; /* spf header comment */
1033 extern uschar *spf_received; /* Received-SPF: header */
1034 extern uschar *spf_result; /* spf result in string form */
1035 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
1036 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
1037 extern uschar *spf_smtp_comment_template;
1038 /* template to construct the spf comment by libspf2 */
1040 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1041 extern FILE *spool_data_file; /* handle for -D file */
1042 extern uschar *spool_directory; /* Name of spool directory */
1043 extern BOOL spool_wireformat; /* can write wireformat -D files */
1045 extern uschar *srs_recipient; /* SRS recipient */
1047 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1048 extern int string_datestamp_offset;/* After insertion by string_format */
1049 extern int string_datestamp_length;/* After insertion by string_format */
1050 extern int string_datestamp_type; /* After insertion by string_format */
1051 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1052 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1053 extern const uschar *submission_domain;/* Domain for submission mode */
1054 extern const uschar *submission_name; /* User name set from ACL */
1055 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1056 extern int syslog_facility; /* As defined by Syslog.h */
1057 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1058 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1059 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1060 extern uschar *system_filter; /* Name of system filter file */
1062 extern uschar *system_filter_directory_transport; /* Transports for the */
1063 extern uschar *system_filter_file_transport; /* system filter */
1064 extern uschar *system_filter_pipe_transport;
1065 extern uschar *system_filter_reply_transport;
1067 extern gid_t system_filter_gid; /* Gid for running system filter */
1068 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1069 extern uid_t system_filter_uid; /* Uid for running system filter */
1070 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1072 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1073 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1074 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1075 #ifdef USE_TCP_WRAPPERS
1076 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1078 extern int test_harness_load_avg; /* For use when testing */
1079 extern int thismessage_size_limit; /* Limit for this message */
1080 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1081 #ifdef MEASURE_TIMING
1082 extern struct timeval timestamp_startup; /* For development measurements */
1085 extern uschar *transport_name; /* Name of transport last started */
1086 extern int transport_count; /* Count of bytes transported */
1087 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1088 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1089 extern int transport_filter_timeout; /* Timeout for same */
1091 extern transport_info transports_available[]; /* Vector of available transports */
1092 extern transport_instance *transports; /* Chain of instantiated transports */
1093 extern transport_instance transport_defaults; /* Default values */
1095 extern int transport_write_timeout;/* Set to time out individual writes */
1097 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1098 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1099 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1100 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1102 extern gid_t *trusted_groups; /* List of trusted groups */
1103 extern uid_t *trusted_users; /* List of trusted users */
1104 extern uschar *timezone_string; /* Required timezone setting */
1106 extern uschar *unknown_login; /* To use when login id unknown */
1107 extern uschar *unknown_username; /* Ditto */
1108 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1109 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1110 extern uschar *uucp_from_sender; /* For building the sender */
1112 extern uschar *warn_message_file; /* Template for warning messages */
1113 extern uschar *warnmsg_delay; /* String form of delay time */
1114 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1115 extern BOOL write_rejectlog; /* Control of reject logging */
1117 extern uschar *verify_mode; /* Running a router in verify mode */
1118 extern uschar *version_copyright; /* Copyright notice */
1119 extern uschar *version_date; /* Date of compilation */
1120 extern uschar *version_cnumber; /* Compile number */
1121 extern uschar *version_string; /* Version string */
1123 extern int warning_count; /* Delay warnings sent for this msg */
1125 /* End of globals.h */
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