1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* Copyright (c) The Exim Maintainers 2020 */
7 /* See the file NOTICE for conditions of use and distribution. */
9 /* Almost all the global variables are defined together in this one header, so
10 that they are easy to find. However, those that are visible during the
11 compilation of the local_scan() function are defined separately in the
12 local_scan.h header file. */
14 /* First put any specials that are required for some operating systems. */
20 /* We need to be careful about width of int and atomicity in signal handlers,
21 especially with the rise of 64-bit systems breaking older assumptions. But
22 sig_atomic_t comes from signal.h so can't go into mytypes.h without including
23 signal support in local_scan, which seems precipitous. */
24 typedef volatile sig_atomic_t SIGNAL_BOOL;
26 /* Now things that are present only when configured. */
29 extern uschar *opt_perl_startup; /* Startup code for Perl interpreter */
30 extern BOOL opt_perl_at_start; /* Start Perl interpreter at start */
31 extern BOOL opt_perl_started; /* Set once interpreter started */
32 extern BOOL opt_perl_taintmode; /* Enable taint mode in Perl */
36 extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
40 extern uschar *ibase_servers;
44 extern uschar *eldap_ca_cert_dir; /* Directory with CA certificates */
45 extern uschar *eldap_ca_cert_file; /* CA certificate file */
46 extern uschar *eldap_cert_file; /* Certificate file */
47 extern uschar *eldap_cert_key; /* Certificate key file */
48 extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
49 extern uschar *eldap_default_servers; /* List of default servers */
50 extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
51 extern BOOL eldap_start_tls; /* Use STARTTLS */
52 extern int eldap_version; /* LDAP version */
56 extern uschar *mysql_servers; /* List of servers and connect info */
60 extern uschar *oracle_servers; /* List of servers and connect info */
64 extern uschar *pgsql_servers; /* List of servers and connect info */
68 extern uschar *redis_servers; /* List of servers and connect info */
72 extern uschar *sqlite_dbfile; /* Filname for database */
73 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
76 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
77 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
80 /* 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 unsigned resumption; /* Session resumption */
112 BOOL host_resumable:1;
113 BOOL ticket_received:1;
115 BOOL verify_override:1; /* certificate_verified only due to tls_try_verify_hosts */
116 BOOL ext_master_secret:1; /* extended-master-secret was used */
118 extern tls_support tls_in;
119 extern tls_support tls_out;
122 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
123 extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
124 extern uschar *openssl_options; /* OpenSSL compatibility options */
125 extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
126 extern uschar *tls_certificate; /* Certificate file */
127 extern uschar *tls_crl; /* CRL File */
128 extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
129 extern uschar *tls_dhparam; /* DH param file */
130 extern uschar *tls_eccurve; /* EC curve */
131 # ifndef DISABLE_OCSP
132 extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
134 extern uschar *tls_privatekey; /* Private key file */
135 extern BOOL tls_remember_esmtp; /* For YAEB */
136 extern uschar *tls_require_ciphers; /* So some can be avoided */
137 # ifndef DISABLE_TLS_RESUME
138 extern uschar *tls_resumption_hosts; /* TLS session resumption */
140 extern uschar *tls_try_verify_hosts; /* Optional client verification */
141 extern uschar *tls_verify_certificates;/* Path for certificates to check */
142 extern uschar *tls_verify_hosts; /* Mandatory client verification */
143 extern int tls_watch_fd; /* for inotify of creds files */
144 extern time_t tls_watch_trigger_time; /* non-0: triggered */
146 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
148 extern uschar *dsn_envid; /* DSN envid string */
149 extern int dsn_ret; /* DSN ret type*/
150 extern const pcre *regex_DSN; /* For recognizing DSN settings */
151 extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
153 /* Input-reading functions for messages, so we can use special ones for
156 extern int (*lwr_receive_getc)(unsigned);
157 extern uschar * (*lwr_receive_getbuf)(unsigned *);
158 extern int (*lwr_receive_ungetc)(int);
159 extern int (*receive_getc)(unsigned);
160 extern uschar * (*receive_getbuf)(unsigned *);
161 extern void (*receive_get_cache)(void);
162 extern int (*receive_ungetc)(int);
163 extern int (*receive_feof)(void);
164 extern int (*receive_ferror)(void);
165 extern BOOL (*receive_smtp_buffered)(void);
168 /* For clearing, saving, restoring address expansion variables. We have to have
169 the size of this vector set explicitly, because it is referenced from more than
172 extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
174 /* Flags for which we don't need an address ever so can use a bitfield */
176 extern struct global_flags {
177 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
178 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
179 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
180 BOOL address_test_mode :1; /* True for -bt */
181 BOOL admin_user :1; /* True if caller can do admin */
182 BOOL allow_auth_unadvertised :1; /* As it says */
183 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
184 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
185 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
187 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
189 BOOL chunking_offered :1;
190 BOOL config_changed :1; /* True if -C used */
191 BOOL continue_more :1; /* Flag more addresses waiting */
193 BOOL daemon_listen :1; /* True if listening required */
194 BOOL debug_daemon :1; /* Debug the daemon process only */
195 BOOL deliver_firsttime :1; /* True for first delivery attempt */
196 BOOL deliver_force :1; /* TRUE if delivery was forced */
197 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
198 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
199 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
200 BOOL deliver_selectstring_regex :1; /* String is regex */
201 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
202 BOOL disable_callout_flush :1; /* Don't flush before callouts */
203 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
204 BOOL disable_logging :1; /* Disables log writing when TRUE */
206 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
207 BOOL dkim_init_done :1; /* lazy-init status */
210 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
211 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
212 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
214 BOOL dont_deliver :1; /* TRUE for -N option */
215 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
217 BOOL enable_dollar_recipients :1; /* Make $recipients available */
218 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
220 BOOL filter_running :1; /* TRUE while running a filter */
222 BOOL header_rewritten :1; /* TRUE if header changed by router */
223 BOOL helo_verified :1; /* True if HELO verified */
224 BOOL helo_verify_failed :1; /* True if attempt failed */
225 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
226 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
228 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
229 BOOL is_inetd :1; /* True for inetd calls */
231 BOOL local_error_message :1; /* True if handling one of these */
232 BOOL log_testing_mode :1; /* TRUE in various testing modes */
234 #ifdef WITH_CONTENT_SCAN
235 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
237 BOOL no_multiline_responses :1; /* For broken clients */
239 BOOL parse_allow_group :1; /* Allow group syntax */
240 BOOL parse_found_group :1; /* In the middle of a group */
241 BOOL pipelining_enable :1; /* As it says */
242 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
243 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
246 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
247 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
248 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
249 BOOL queue_run_force :1; /* TRUE to force during queue run */
250 BOOL queue_run_local :1; /* Local deliveries only in queue run */
251 BOOL queue_running :1; /* TRUE for queue running process and */
252 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
254 BOOL really_exim :1; /* FALSE in utilities */
255 BOOL receive_call_bombout :1; /* Flag for crashing log */
256 BOOL recipients_discarded :1; /* By an ACL */
257 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
259 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
260 BOOL sender_address_forced :1; /* Set by -f */
261 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
262 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
263 BOOL sender_local :1; /* TRUE for local senders */
264 BOOL sender_name_forced :1; /* Set by -F */
265 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
266 BOOL smtp_authenticated :1; /* Sending client has authenticated */
267 #ifndef DISABLE_PIPE_CONNECT
268 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
269 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
270 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
272 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
273 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
274 BOOL smtp_in_quit :1; /* server noted QUIT command */
275 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
276 BOOL submission_mode :1; /* Can be forced from ACL */
277 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
278 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
279 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
280 BOOL system_filtering :1; /* TRUE when running system filter */
282 BOOL taint_check_slow :1; /* malloc/mmap are not returning distinct ranges */
283 BOOL testsuite_delays :1; /* interprocess sequencing delays, under testsuite */
284 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
285 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
286 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
287 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
288 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
289 BOOL timestamps_utc :1; /* Use UTC for all times */
290 BOOL transport_filter_timed_out :1; /* True if it did */
291 BOOL trusted_caller :1; /* Caller is trusted */
292 BOOL trusted_config :1; /* Configuration file is trusted */
296 /* General global variables */
298 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
299 extern uschar *add_environment; /* List of environment variables to add */
300 extern header_line *acl_added_headers; /* Headers added by an ACL */
301 extern tree_node *acl_anchor; /* Tree of named ACLs */
302 extern uschar *acl_arg[9]; /* Argument to ACL call */
303 extern int acl_narg; /* Number of arguments to ACL call */
304 extern int acl_level; /* Nesting depth and debug indent */
305 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
306 #ifdef WITH_CONTENT_SCAN
307 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
309 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
310 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
311 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
312 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
313 extern uschar *acl_smtp_data; /* ACL run after DATA received */
315 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
316 const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
319 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
321 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
322 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
323 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
324 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
325 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
326 #ifdef WITH_CONTENT_SCAN
327 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
329 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
330 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
331 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
332 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
333 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
334 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
335 extern tree_node *acl_var_c; /* ACL connection variables */
336 extern tree_node *acl_var_m; /* ACL message variables */
337 extern uschar *acl_verify_message; /* User message for verify failure */
338 extern string_item *acl_warn_logged; /* Logged lines */
339 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
340 extern uschar *acl_wherenames[]; /* Names for messages */
341 extern address_item *addr_duplicate; /* Duplicate address list */
342 extern address_item address_defaults; /* Default data for address item */
343 extern uschar *address_file; /* Name of file when delivering to one */
344 extern uschar *address_pipe; /* Pipe command when delivering to one */
345 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
346 extern int addresslist_count; /* Number defined */
347 extern gid_t *admin_groups; /* List of admin groups */
348 extern BOOL allow_domain_literals; /* As it says */
349 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
350 #ifdef EXPERIMENTAL_ARC
351 extern struct arc_set *arc_received; /* highest ARC instance evaluation struct */
352 extern int arc_received_instance; /* highest ARC instance number in headers */
353 extern int arc_oldest_pass; /* lowest passing instance number in headers */
354 extern const uschar *arc_state; /* verification state */
355 extern const uschar *arc_state_reason;
357 extern BOOL allow_utf8_domains; /* For experimenting */
358 extern uschar *authenticated_fail_id; /* ID that failed authentication */
359 extern uschar *authenticated_id; /* ID that was authenticated */
360 extern uschar *authenticated_sender; /* From AUTH on MAIL */
361 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
362 extern uschar *auth_advertise_hosts; /* Only advertise to these */
363 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
364 extern auth_instance *auths; /* Chain of instantiated auths */
365 extern auth_instance auth_defaults; /* Default values */
366 extern uschar *auth_defer_msg; /* Error message for log */
367 extern uschar *auth_defer_user_msg; /* Error message for user */
368 extern uschar *auth_vars[]; /* $authn variables */
369 extern int auto_thaw; /* Auto-thaw interval */
370 #ifdef WITH_CONTENT_SCAN
371 extern int av_failed; /* TRUE if the AV process failed */
372 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
375 extern uschar *base62_chars; /* Table of base-62 characters */
376 extern uschar *bi_command; /* Command for -bi option */
377 extern uschar *big_buffer; /* Used for various temp things */
378 extern int big_buffer_size; /* Current size (can expand) */
379 #ifdef EXPERIMENTAL_BRIGHTMAIL
380 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
381 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
382 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
383 extern uschar *bmi_config_file; /* Brightmail config file */
384 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
385 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
386 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
388 extern int bsmtp_transaction_linecount; /* Start of last transaction */
389 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
390 extern uschar *bounce_message_file; /* Template file */
391 extern uschar *bounce_message_text; /* One-liner */
392 extern uschar *bounce_recipient; /* When writing an errmsg */
393 extern BOOL bounce_return_body; /* Include body in returned message */
394 extern int bounce_return_linesize_limit; /* Max line length in return */
395 extern BOOL bounce_return_message; /* Include message in bounce */
396 extern int bounce_return_size_limit; /* Max amount to return */
397 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
399 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
400 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
401 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
402 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
403 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
404 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
405 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
406 extern int check_log_inodes; /* Minimum for message acceptance */
407 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
408 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
409 extern int check_spool_inodes; /* Minimum for message acceptance */
410 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
411 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
412 extern unsigned chunking_datasize;
413 extern unsigned chunking_data_left;
414 extern chunking_state_t chunking_state;
415 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
416 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
417 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
418 extern int clmacro_count; /* Number of command line macros */
419 extern uschar *clmacros[]; /* Copy of them, for re-exec */
420 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
421 extern int connection_max_messages;/* Max down one SMTP connection */
422 extern FILE *config_file; /* Configuration file */
423 extern const uschar *config_filename; /* Configuration file name */
424 extern gid_t config_gid; /* Additional group owner */
425 extern int config_lineno; /* Line number */
426 extern uschar *config_main_filelist; /* List of possible config files */
427 extern uschar *config_main_filename; /* File name actually used */
428 extern uschar *config_main_directory; /* Directory where the main config file was found */
429 extern uid_t config_uid; /* Additional owner */
430 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
431 extern BOOL continue_proxy_dane; /* proxied conn is DANE */
432 extern uschar *continue_proxy_sni; /* proxied conn SNI */
433 extern uschar *continue_hostname; /* Host for continued delivery */
434 extern uschar *continue_host_address; /* IP address for ditto */
435 extern int continue_sequence; /* Sequence num for continued delivery */
436 extern uschar *continue_transport; /* Transport for continued delivery */
437 #ifdef EXPERIMENTAL_ESMTP_LIMITS
438 extern unsigned continue_limit_mail; /* Peer advertised limit */
439 extern unsigned continue_limit_rcpt;
440 extern unsigned continue_limit_rcptdom;
444 extern uschar *csa_status; /* Client SMTP Authorization result */
447 unsigned callout_hold_only:1; /* Conn is only for verify callout */
448 unsigned delivery:1; /* When to attempt */
449 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
450 unsigned is_tls:1; /* Conn has TLS active */
451 client_conn_ctx cctx; /* Open connection */
452 int nrcpt; /* Count of addresses */
453 uschar * transport; /* Name of transport */
454 uschar * interface; /* (address of) */
455 uschar * snd_ip; /* sending_ip_address */
456 int snd_port; /* sending_port */
457 unsigned peer_options; /* smtp_peer_options */
458 host_item host; /* Host used */
459 address_item addr; /* (Chain of) addresses */
461 extern cut_t cutthrough; /* Deliver-concurrently */
463 extern int daemon_notifier_fd; /* Unix socket for notifications */
464 extern uschar *daemon_smtp_port; /* Can be a list of ports */
465 extern int daemon_startup_retries; /* Number of times to retry */
466 extern int daemon_startup_sleep; /* Sleep between retries */
468 #ifdef EXPERIMENTAL_DCC
469 extern BOOL dcc_direct_add_header; /* directly add header */
470 extern uschar *dcc_header; /* dcc header */
471 extern uschar *dcc_result; /* dcc result */
472 extern uschar *dccifd_address; /* address of the dccifd daemon */
473 extern uschar *dccifd_options; /* options for the dccifd daemon */
476 extern int debug_fd; /* The fd for debug_file */
477 extern FILE *debug_file; /* Where to write debugging info */
478 extern int debug_notall[]; /* Debug options excluded from +all */
479 extern bit_table debug_options[]; /* Table of debug options */
480 extern int debug_options_count; /* Size of table */
481 extern BOOL debug_store; /* Do extra checks on store_reset */
482 extern int delay_warning[]; /* Times between warnings */
483 extern uschar *delay_warning_condition; /* Condition string for warnings */
484 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
486 extern uschar *deliver_address_data; /* Arbitrary data for an address */
487 extern int deliver_datafile; /* FD for data part of message */
488 extern const uschar *deliver_domain; /* The local domain for delivery */
489 extern uschar *deliver_domain_data; /* From domain lookup */
490 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
491 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
492 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
493 extern time_t deliver_frozen_at; /* Time of freezing */
494 extern uschar *deliver_home; /* Home directory for pipes */
495 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
496 /* Remote host for filter */
497 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
498 extern int deliver_host_port; /* Address for remote delivery filter */
499 extern uschar *deliver_in_buffer; /* Buffer for copying file */
500 extern ino_t deliver_inode; /* Inode for appendfile */
501 extern uschar *deliver_localpart; /* The local part for delivery */
502 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
503 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
504 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
505 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
506 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
507 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
508 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
509 extern uschar *deliver_out_buffer; /* Buffer for copying file */
510 extern int deliver_queue_load_max; /* Different value for queue running */
511 extern address_item *deliver_recipients; /* Current set of addresses */
512 extern uschar *deliver_selectstring; /* For selecting by recipient */
513 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
514 #ifdef ENABLE_DISABLE_FSYNC
515 extern BOOL disable_fsync; /* Not for normal use */
517 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
520 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
521 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
522 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
523 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
524 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
525 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
526 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
527 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
528 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
529 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
530 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
531 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
532 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
533 extern uschar *dkim_verify_status; /* result for this signature */
534 extern uschar *dkim_verify_reason; /* result for this signature */
537 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
538 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
539 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
540 extern uschar *dmarc_status; /* Expansion variable, one word value */
541 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
542 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
543 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
546 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
547 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
548 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
549 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
550 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
552 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
554 extern int dns_retrans; /* Retransmission time setting */
555 extern int dns_retry; /* Number of retries */
556 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
557 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
558 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
559 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
560 extern uschar *dnslist_domain; /* DNS (black) list domain */
561 extern uschar *dnslist_matched; /* DNS (black) list matched key */
562 extern uschar *dnslist_text; /* DNS (black) list text message */
563 extern uschar *dnslist_value; /* DNS (black) list IP address */
564 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
565 extern int domainlist_count; /* Number defined */
567 /* This option is now a no-opt, retained for compatibility */
568 extern BOOL drop_cr; /* For broken local MUAs */
570 extern uschar *dsn_from; /* From: string for DSNs */
572 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
573 extern int errno_quota; /* Quota errno in this OS */
574 extern int error_handling; /* Error handling style */
575 extern uschar *errors_copy; /* For taking copies of errors */
576 extern uschar *errors_reply_to; /* Reply-to for error messages */
577 extern int errors_sender_rc; /* Return after message to sender*/
579 #ifndef DISABLE_EVENT
580 extern uschar *event_action; /* expansion for delivery events */
581 extern uschar *event_data; /* event data */
582 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
583 extern const uschar *event_name; /* event classification */
586 extern gid_t exim_gid; /* To be used with exim_uid */
587 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
588 extern uschar *exim_path; /* Path to exec exim */
589 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
590 extern uid_t exim_uid; /* Non-root uid for exim */
591 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
592 extern int expand_level; /* Nesting depth; indent for debug */
593 extern int expand_forbid; /* RDO flags for forbidding things */
594 extern int expand_nlength[]; /* Lengths of numbered strings */
595 extern int expand_nmax; /* Max numerical value */
596 extern uschar *expand_nstring[]; /* Numbered strings */
597 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
598 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
600 extern int fake_response; /* Fake FAIL or DEFER response to data */
601 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
602 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
603 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
604 extern int filter_test; /* Filter test type */
605 extern uschar *filter_test_sfile; /* System filter test file */
606 extern uschar *filter_test_ufile; /* User filter test file */
607 extern uschar *filter_thisaddress; /* For address looping */
608 extern int finduser_retries; /* Retry count for getpwnam() */
609 extern uid_t fixed_never_users[]; /* Can't be overridden */
610 extern uschar *freeze_tell; /* Message on (some) freezings */
611 extern uschar *freeze_tell_config; /* The configured setting */
612 extern uschar *fudged_queue_times; /* For use in test harness */
614 extern uschar *gecos_name; /* To be expanded when pattern matches */
615 extern uschar *gecos_pattern; /* Pattern to match */
616 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
618 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
619 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
620 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
621 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
622 extern int header_insert_maxlen; /* Max for inserting headers */
623 extern int header_maxsize; /* Max total length for header */
624 extern int header_line_maxsize; /* Max for an individual line */
625 extern header_name header_names[]; /* Table of header names */
626 extern int header_names_size; /* Number of entries */
627 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
628 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
629 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
630 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
631 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
632 extern const uschar *hex_digits; /* Used in several places */
633 extern uschar *hold_domains; /* Hold up deliveries to these */
634 extern uschar *host_data; /* Obtained from lookup in ACL */
635 extern uschar *host_lookup; /* For which IP addresses are always looked up */
636 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
637 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
638 extern uschar *host_lookup_order; /* Order of host lookup types */
639 extern uschar *host_lookup_msg; /* Text for why it failed */
640 extern int host_number; /* For sharing spools */
641 extern uschar *host_number_string; /* For expanding */
642 extern uschar *host_reject_connection; /* Reject these hosts */
643 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
644 extern int hostlist_count; /* Number defined */
645 extern uschar *hosts_connection_nolog; /* Limits the logging option */
646 extern uschar *hosts_treat_as_local; /* For routing */
648 extern int ignore_bounce_errors_after; /* Keep them for this time. */
649 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
650 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
651 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
652 extern uschar *initial_cwd; /* The directory we where in at startup */
653 extern uschar *iterate_item; /* Item from iterate list */
655 extern int journal_fd; /* Fd for journal file */
657 extern uschar *keep_environment; /* Whitelist for environment variables */
658 extern int keep_malformed; /* Time to keep malformed messages */
660 extern uschar *eldap_dn; /* Where LDAP DNs are left */
661 #ifdef EXPERIMENTAL_ESMTP_LIMITS
662 extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
664 extern int load_average; /* Most recently read load average */
665 extern BOOL local_from_check; /* For adding Sender: (global value) */
666 extern uschar *local_from_prefix; /* Permitted prefixes */
667 extern uschar *local_from_suffix; /* Permitted suffixes */
668 extern uschar *local_interfaces; /* For forcing specific interfaces */
669 #ifdef HAVE_LOCAL_SCAN
670 extern uschar *local_scan_data; /* Text returned by local_scan() */
671 extern optionlist local_scan_options[];/* Option list for local_scan() */
672 extern int local_scan_options_count; /* Size of the list */
673 extern int local_scan_timeout; /* Timeout for local_scan() */
675 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
676 extern gid_t local_user_gid; /* As it says; may be set in routers */
677 extern uid_t local_user_uid; /* As it says; may be set in routers */
678 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
679 extern int localpartlist_count; /* Number defined */
680 extern uschar *log_buffer; /* For constructing log entries */
681 extern int log_default[]; /* Initialization list for log_selector */
682 extern uschar *log_file_path; /* If unset, use default */
683 extern int log_notall[]; /* Log options excluded from +all */
684 extern bit_table log_options[]; /* Table of options */
685 extern int log_options_count; /* Size of table */
686 extern int log_reject_target; /* Target log for ACL rejections */
687 extern unsigned int log_selector[]; /* Bit map of logging options */
688 extern uschar *log_selector_string; /* As supplied in the config */
689 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
690 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
691 extern uschar *login_sender_address; /* The actual sender address */
692 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
693 extern int lookup_list_count; /* Number of entries in the list */
694 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
695 extern int lookup_open_max; /* Max lookup files to cache */
696 extern uschar *lookup_value; /* Value looked up from file */
698 extern macro_item *macros; /* Configuration macros */
699 extern macro_item *macros_user; /* Non-builtin configuration macros */
700 extern macro_item *mlast; /* Last item in macro list */
701 extern uschar *mailstore_basename; /* For mailstore deliveries */
702 #ifdef WITH_CONTENT_SCAN
703 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
705 extern int max_received_linelength;/* What it says */
706 extern int max_username_length; /* For systems with broken getpwnam() */
707 extern int message_age; /* In seconds */
708 extern uschar *message_body; /* Start of message body for filter */
709 extern uschar *message_body_end; /* End of message body for filter */
710 extern BOOL message_body_newlines; /* FALSE => remove newlines */
711 extern int message_body_size; /* Sic */
712 extern int message_body_visible; /* Amount visible in message_body */
713 extern int message_ended; /* State of message reading and how ended */
714 extern uschar *message_headers; /* When built */
715 extern uschar message_id_option[]; /* -E<message-id> for use as option */
716 extern uschar *message_id_external; /* External form of following */
717 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
718 extern uschar *message_id_text; /* Expanded to form message_id */
719 extern struct timeval message_id_tv; /* Time used to create last message_id */
720 extern int message_linecount; /* As it says */
721 extern BOOL message_logs; /* TRUE to write message logs */
722 extern int message_size; /* Size of message */
723 extern uschar *message_size_limit; /* As it says */
725 extern BOOL message_smtputf8; /* Internationalized mail handling */
726 extern int message_utf8_downconvert; /* convert from utf8 */
727 const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
729 extern uschar message_subdir[]; /* Subdirectory for messages */
730 extern uschar *message_reference; /* Reference for error messages */
732 /* MIME ACL expandables */
733 #ifdef WITH_CONTENT_SCAN
734 extern int mime_anomaly_level;
735 extern const uschar *mime_anomaly_text;
736 extern uschar *mime_boundary;
737 extern uschar *mime_charset;
738 extern uschar *mime_content_description;
739 extern uschar *mime_content_disposition;
740 extern uschar *mime_content_id;
741 extern unsigned int mime_content_size;
742 extern uschar *mime_content_transfer_encoding;
743 extern uschar *mime_content_type;
744 extern uschar *mime_decoded_filename;
745 extern uschar *mime_filename;
746 extern int mime_is_multipart;
747 extern int mime_is_coverletter;
748 extern int mime_is_rfc822;
749 extern int mime_part_count;
752 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
754 extern uid_t *never_users; /* List of uids never to be used */
755 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
757 extern const int on; /* For setsockopt */
758 extern const int off;
760 extern optionlist optionlist_auths[]; /* These option lists are made */
761 extern int optionlist_auths_size; /* global so that readconf can */
762 extern optionlist optionlist_routers[]; /* see them for printing out */
763 extern int optionlist_routers_size; /* the options. */
764 extern optionlist optionlist_transports[];
765 extern int optionlist_transports_size;
767 extern uid_t original_euid; /* Original effective uid */
768 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
769 extern uschar *originator_login; /* Login of same */
770 extern uschar *originator_name; /* Full name of same */
771 extern uid_t originator_uid; /* Uid of ditto */
772 extern uschar *override_local_interfaces; /* Value of -oX argument */
773 extern uschar *override_pid_file_path; /* Value of -oP argument */
775 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
776 extern uschar *pid_file_path; /* For writing daemon pids */
777 #ifndef DISABLE_PIPE_CONNECT
778 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
780 extern uschar *pipelining_advertise_hosts; /* As it says */
782 extern BOOL prdr_enable; /* As it says */
783 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
785 extern BOOL preserve_message_logs; /* Save msglog files */
786 extern uschar *primary_hostname; /* Primary name of this computer */
787 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
788 extern uschar *process_info; /* For SIGUSR1 output */
789 extern int process_info_len;
790 extern uschar *process_log_path; /* Alternate path */
791 extern const uschar *process_purpose; /* for debug output */
792 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
794 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
795 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
796 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
797 extern int proxy_external_port; /* Port on remote interface of proxy */
798 extern uschar *proxy_local_address; /* IP of local interface of proxy */
799 extern int proxy_local_port; /* Port on local interface of proxy */
800 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
801 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
804 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
805 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
806 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
808 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
809 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
810 extern uschar *queue_domains; /* Queue these domains */
811 #ifndef DISABLE_QUEUE_RAMP
812 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
814 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
815 /* immediate children */
816 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
817 extern int queue_run_pipe; /* Pipe for synchronizing */
818 extern int queue_interval; /* Queue running interval */
819 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
820 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
821 extern BOOL queue_only; /* TRUE to disable immediate delivery */
822 extern int queue_only_load; /* Max load before auto-queue */
823 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
824 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
825 extern BOOL queue_only_override; /* Allow override from command line */
826 extern BOOL queue_run_in_order; /* As opposed to random */
827 extern uschar *queue_run_max; /* Max queue runners */
828 extern unsigned queue_size; /* items in queue */
829 extern time_t queue_size_next; /* next time to evaluate queue_size */
830 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
832 extern unsigned int random_seed; /* Seed for random numbers */
833 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
834 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
835 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
836 extern uschar *raw_active_hostname; /* Pre-expansion */
837 extern uschar *raw_sender; /* Before rewriting */
838 extern uschar **raw_recipients; /* Before rewriting */
839 extern int raw_recipients_count;
840 extern const uschar * rc_names[]; /* Mostly for debug output */
841 extern int rcpt_count; /* Count of RCPT commands in a message */
842 extern int rcpt_fail_count; /* Those that got 5xx */
843 extern int rcpt_defer_count; /* Those that got 4xx */
844 extern gid_t real_gid; /* Real gid */
845 extern uid_t real_uid; /* Real user running program */
846 extern int receive_linecount; /* Mainly for BSMTP errors */
847 extern int receive_messagecount; /* Mainly for BSMTP errors */
848 extern int receive_timeout; /* For non-SMTP acceptance */
849 extern int received_count; /* Count of Received: headers */
850 extern uschar *received_for; /* For "for" field */
851 extern uschar *received_header_text; /* Definition of Received: header */
852 extern int received_headers_max; /* Max count of Received: headers */
853 extern struct timeval received_time; /* Time the message started to be received */
854 extern struct timeval received_time_complete; /* Time the message completed reception */
855 extern uschar *recipient_data; /* lookup data for recipients */
856 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
857 extern uschar *recipient_verify_failure; /* What went wrong */
858 extern int recipients_list_max; /* Maximum number fitting in list */
859 extern int recipients_max; /* Max permitted */
860 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
861 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
862 extern const pcre *regex_check_dns_names; /* For DNS name checking */
863 extern const pcre *regex_From; /* For recognizing "From_" lines */
864 extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
865 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
866 #ifdef EXPERIMENTAL_ESMTP_LIMITS
867 extern const pcre *regex_LIMITS; /* For recognizing LIMITS */
869 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
870 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
871 #ifndef DISABLE_PIPE_CONNECT
872 extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
874 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
875 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
876 extern uschar *regex_vars[]; /* $regexN variables */
877 #ifdef WHITELIST_D_MACROS
878 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
880 #ifdef WITH_CONTENT_SCAN
881 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
883 extern int remote_delivery_count; /* Number of remote addresses */
884 extern int remote_max_parallel; /* Maximum parallel delivery */
885 extern uschar *remote_sort_domains; /* Remote domain sorting order */
886 extern retry_config *retries; /* Chain of retry config information */
887 extern int retry_data_expire; /* When to expire retry data */
888 extern int retry_interval_max; /* Absolute maximum */
889 extern int retry_maximum_timeout; /* The maximum timeout */
890 extern uschar *return_path; /* Return path for a message */
891 extern BOOL return_path_remove; /* Remove return-path headers */
892 extern int rewrite_existflags; /* Indicate which headers have rewrites */
893 extern uschar *rfc1413_hosts; /* RFC hosts */
894 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
895 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
896 extern uid_t root_gid; /* The gid for root */
897 extern uid_t root_uid; /* The uid for root */
898 extern router_info routers_available[];/* Vector of available routers */
899 extern router_instance *routers; /* Chain of instantiated routers */
900 extern router_instance router_defaults;/* Default values */
901 extern uschar *router_name; /* Name of router last started */
902 extern tree_node *router_var; /* Variables set by router */
903 extern ip_address_item *running_interfaces; /* Host's running interfaces */
904 extern uschar *running_status; /* Flag string for testing */
905 extern int runrc; /* rc from ${run} */
907 extern uschar *search_error_message; /* Details of lookup problem */
908 extern uschar *self_hostname; /* Self host after routing->directors */
909 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
910 extern uschar *sender_address_data; /* address_data from sender verify */
911 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
912 extern uschar *sender_data; /* lookup result for senders */
913 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
914 extern uschar *sender_fullhost; /* Sender host name + address */
915 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
916 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
917 extern uschar **sender_host_aliases; /* Points to list of alias names */
918 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
919 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
920 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
921 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
922 extern uschar *sender_rate; /* Sender rate computed by ACL */
923 extern uschar *sender_rate_limit; /* Configured rate limit */
924 extern uschar *sender_rate_period; /* Configured smoothing period */
925 extern uschar *sender_rcvhost; /* Host data for Received: */
926 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
927 extern uschar *sender_verify_failure; /* What went wrong */
928 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
929 extern address_item *sender_verified_failed; /* The one that caused denial */
930 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
931 extern int sending_port; /* Port of outgoing interface */
932 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
933 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
934 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
935 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
936 extern int smtp_accept_count; /* Count of connections */
937 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
938 extern int smtp_accept_max; /* Max SMTP connections */
939 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
940 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
941 extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
942 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
943 extern int smtp_accept_queue; /* Queue after so many connections */
944 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
945 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
946 extern uschar *smtp_active_hostname; /* Hostname for this message */
947 extern uschar *smtp_banner; /* Banner string (to be expanded) */
948 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
949 extern int smtp_ch_index; /* Index in smtp_connection_had */
950 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
951 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
952 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
953 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
954 extern int smtp_connect_backlog; /* Max backlog permitted */
955 extern double smtp_delay_mail; /* Current MAIL delay */
956 extern double smtp_delay_rcpt; /* Current RCPT delay */
957 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
958 extern uschar *smtp_etrn_command; /* Command to run */
959 extern BOOL smtp_etrn_serialize; /* Only one at once */
960 extern FILE *smtp_in; /* Incoming SMTP input file */
961 extern int smtp_load_reserve; /* Only from reserved if load > this */
962 extern int smtp_mailcmd_count; /* Count of MAIL commands */
963 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
964 extern int smtp_max_unknown_commands; /* As it says */
965 extern uschar *smtp_names[]; /* decode for command codes */
966 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
967 extern FILE *smtp_out; /* Incoming SMTP output file */
968 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
969 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
970 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
971 extern uschar *smtp_read_error; /* Message for SMTP input error */
972 extern int smtp_receive_timeout; /* Applies to each received line */
973 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
974 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
975 extern BOOL smtp_return_error_details; /* TRUE to return full info */
976 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
977 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
978 extern int smtp_rlm_limit; /* Max delay */
979 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
980 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
981 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
982 extern int smtp_rlr_limit; /* Max delay */
983 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
984 extern unsigned smtp_peer_options; /* Global flags for passed connections */
985 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
987 extern uschar *smtputf8_advertise_hosts; /* ingress control */
990 #ifdef WITH_CONTENT_SCAN
991 extern uschar *spamd_address; /* address for the spamassassin daemon */
992 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
993 extern uschar *spam_report; /* the spamd report (multiline) */
994 extern uschar *spam_action; /* the spamd recommended-action */
995 extern uschar *spam_score; /* the spam score (float) */
996 extern uschar *spam_score_int; /* spam_score * 10 (int) */
999 extern uschar *spf_guess; /* spf best-guess record */
1000 extern uschar *spf_header_comment; /* spf header comment */
1001 extern uschar *spf_received; /* Received-SPF: header */
1002 extern uschar *spf_result; /* spf result in string form */
1003 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
1004 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
1005 extern uschar *spf_smtp_comment_template;
1006 /* template to construct the spf comment by libspf2 */
1008 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1009 extern FILE *spool_data_file; /* handle for -D file */
1010 extern uschar *spool_directory; /* Name of spool directory */
1011 extern BOOL spool_wireformat; /* can write wireformat -D files */
1012 #ifdef EXPERIMENTAL_SRS_ALT
1013 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
1014 extern uschar *srs_db_address; /* SRS db address */
1015 extern uschar *srs_db_key; /* SRS db key */
1016 extern int srs_hashlength; /* SRS hash length */
1017 extern int srs_hashmin; /* SRS minimum hash length */
1018 extern int srs_maxage; /* SRS max age */
1019 extern uschar *srs_orig_sender; /* SRS original sender */
1020 extern uschar *srs_orig_recipient; /* SRS original recipient */
1021 extern uschar *srs_recipient; /* SRS recipient */
1022 extern uschar *srs_secrets; /* SRS secrets list */
1023 extern uschar *srs_status; /* SRS staus */
1024 extern BOOL srs_usehash; /* SRS use hash flag */
1025 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
1028 extern uschar *srs_recipient; /* SRS recipient */
1030 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1031 extern int string_datestamp_offset;/* After insertion by string_format */
1032 extern int string_datestamp_length;/* After insertion by string_format */
1033 extern int string_datestamp_type; /* After insertion by string_format */
1034 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1035 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1036 extern const uschar *submission_domain;/* Domain for submission mode */
1037 extern const uschar *submission_name; /* User name set from ACL */
1038 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1039 extern int syslog_facility; /* As defined by Syslog.h */
1040 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1041 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1042 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1043 extern uschar *system_filter; /* Name of system filter file */
1045 extern uschar *system_filter_directory_transport; /* Transports for the */
1046 extern uschar *system_filter_file_transport; /* system filter */
1047 extern uschar *system_filter_pipe_transport;
1048 extern uschar *system_filter_reply_transport;
1050 extern gid_t system_filter_gid; /* Gid for running system filter */
1051 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1052 extern uid_t system_filter_uid; /* Uid for running system filter */
1053 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1055 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1056 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1057 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1058 #ifdef USE_TCP_WRAPPERS
1059 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1061 extern int test_harness_load_avg; /* For use when testing */
1062 extern int thismessage_size_limit; /* Limit for this message */
1063 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1064 #ifdef MEASURE_TIMING
1065 extern struct timeval timestamp_startup; /* For development measurements */
1068 extern uschar *transport_name; /* Name of transport last started */
1069 extern int transport_count; /* Count of bytes transported */
1070 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1071 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1072 extern int transport_filter_timeout; /* Timeout for same */
1074 extern transport_info transports_available[]; /* Vector of available transports */
1075 extern transport_instance *transports; /* Chain of instantiated transports */
1076 extern transport_instance transport_defaults; /* Default values */
1078 extern int transport_write_timeout;/* Set to time out individual writes */
1080 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1081 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1082 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1083 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1085 extern gid_t *trusted_groups; /* List of trusted groups */
1086 extern uid_t *trusted_users; /* List of trusted users */
1087 extern uschar *timezone_string; /* Required timezone setting */
1089 extern uschar *unknown_login; /* To use when login id unknown */
1090 extern uschar *unknown_username; /* Ditto */
1091 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1092 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1093 extern uschar *uucp_from_sender; /* For building the sender */
1095 extern uschar *warn_message_file; /* Template for warning messages */
1096 extern uschar *warnmsg_delay; /* String form of delay time */
1097 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1098 extern BOOL write_rejectlog; /* Control of reject logging */
1100 extern uschar *verify_mode; /* Running a router in verify mode */
1101 extern uschar *version_copyright; /* Copyright notice */
1102 extern uschar *version_date; /* Date of compilation */
1103 extern uschar *version_cnumber; /* Compile number */
1104 extern uschar *version_string; /* Version string */
1106 extern int warning_count; /* Delay warnings sent for this msg */
1108 /* End of globals.h */
git://git.exim.org / exim.git / blob