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 */
438 extern uschar *csa_status; /* Client SMTP Authorization result */
441 unsigned callout_hold_only:1; /* Conn is only for verify callout */
442 unsigned delivery:1; /* When to attempt */
443 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
444 unsigned is_tls:1; /* Conn has TLS active */
445 client_conn_ctx cctx; /* Open connection */
446 int nrcpt; /* Count of addresses */
447 uschar * transport; /* Name of transport */
448 uschar * interface; /* (address of) */
449 uschar * snd_ip; /* sending_ip_address */
450 int snd_port; /* sending_port */
451 unsigned peer_options; /* smtp_peer_options */
452 host_item host; /* Host used */
453 address_item addr; /* (Chain of) addresses */
455 extern cut_t cutthrough; /* Deliver-concurrently */
457 extern int daemon_notifier_fd; /* Unix socket for notifications */
458 extern uschar *daemon_smtp_port; /* Can be a list of ports */
459 extern int daemon_startup_retries; /* Number of times to retry */
460 extern int daemon_startup_sleep; /* Sleep between retries */
462 #ifdef EXPERIMENTAL_DCC
463 extern BOOL dcc_direct_add_header; /* directly add header */
464 extern uschar *dcc_header; /* dcc header */
465 extern uschar *dcc_result; /* dcc result */
466 extern uschar *dccifd_address; /* address of the dccifd daemon */
467 extern uschar *dccifd_options; /* options for the dccifd daemon */
470 extern int debug_fd; /* The fd for debug_file */
471 extern FILE *debug_file; /* Where to write debugging info */
472 extern int debug_notall[]; /* Debug options excluded from +all */
473 extern bit_table debug_options[]; /* Table of debug options */
474 extern int debug_options_count; /* Size of table */
475 extern BOOL debug_store; /* Do extra checks on store_reset */
476 extern int delay_warning[]; /* Times between warnings */
477 extern uschar *delay_warning_condition; /* Condition string for warnings */
478 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
480 extern uschar *deliver_address_data; /* Arbitrary data for an address */
481 extern int deliver_datafile; /* FD for data part of message */
482 extern const uschar *deliver_domain; /* The local domain for delivery */
483 extern uschar *deliver_domain_data; /* From domain lookup */
484 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
485 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
486 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
487 extern time_t deliver_frozen_at; /* Time of freezing */
488 extern uschar *deliver_home; /* Home directory for pipes */
489 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
490 /* Remote host for filter */
491 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
492 extern int deliver_host_port; /* Address for remote delivery filter */
493 extern uschar *deliver_in_buffer; /* Buffer for copying file */
494 extern ino_t deliver_inode; /* Inode for appendfile */
495 extern uschar *deliver_localpart; /* The local part for delivery */
496 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
497 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
498 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
499 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
500 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
501 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
502 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
503 extern uschar *deliver_out_buffer; /* Buffer for copying file */
504 extern int deliver_queue_load_max; /* Different value for queue running */
505 extern address_item *deliver_recipients; /* Current set of addresses */
506 extern uschar *deliver_selectstring; /* For selecting by recipient */
507 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
508 #ifdef ENABLE_DISABLE_FSYNC
509 extern BOOL disable_fsync; /* Not for normal use */
511 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
514 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
515 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
516 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
517 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
518 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
519 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
520 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
521 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
522 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
523 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
524 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
525 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
526 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
527 extern uschar *dkim_verify_status; /* result for this signature */
528 extern uschar *dkim_verify_reason; /* result for this signature */
531 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
532 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
533 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
534 extern uschar *dmarc_status; /* Expansion variable, one word value */
535 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
536 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
537 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
540 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
541 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
542 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
543 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
544 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
546 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
548 extern int dns_retrans; /* Retransmission time setting */
549 extern int dns_retry; /* Number of retries */
550 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
551 extern const uschar * dns_rc_names[]; /* Mostly for debug output */
552 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
553 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
554 extern uschar *dnslist_domain; /* DNS (black) list domain */
555 extern uschar *dnslist_matched; /* DNS (black) list matched key */
556 extern uschar *dnslist_text; /* DNS (black) list text message */
557 extern uschar *dnslist_value; /* DNS (black) list IP address */
558 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
559 extern int domainlist_count; /* Number defined */
561 /* This option is now a no-opt, retained for compatibility */
562 extern BOOL drop_cr; /* For broken local MUAs */
564 extern uschar *dsn_from; /* From: string for DSNs */
566 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
567 extern int errno_quota; /* Quota errno in this OS */
568 extern int error_handling; /* Error handling style */
569 extern uschar *errors_copy; /* For taking copies of errors */
570 extern uschar *errors_reply_to; /* Reply-to for error messages */
571 extern int errors_sender_rc; /* Return after message to sender*/
573 #ifndef DISABLE_EVENT
574 extern uschar *event_action; /* expansion for delivery events */
575 extern uschar *event_data; /* event data */
576 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
577 extern const uschar *event_name; /* event classification */
580 extern gid_t exim_gid; /* To be used with exim_uid */
581 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
582 extern uschar *exim_path; /* Path to exec exim */
583 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
584 extern uid_t exim_uid; /* Non-root uid for exim */
585 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
586 extern int expand_level; /* Nesting depth; indent for debug */
587 extern int expand_forbid; /* RDO flags for forbidding things */
588 extern int expand_nlength[]; /* Lengths of numbered strings */
589 extern int expand_nmax; /* Max numerical value */
590 extern uschar *expand_nstring[]; /* Numbered strings */
591 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
592 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
594 extern int fake_response; /* Fake FAIL or DEFER response to data */
595 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
596 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
597 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
598 extern int filter_test; /* Filter test type */
599 extern uschar *filter_test_sfile; /* System filter test file */
600 extern uschar *filter_test_ufile; /* User filter test file */
601 extern uschar *filter_thisaddress; /* For address looping */
602 extern int finduser_retries; /* Retry count for getpwnam() */
603 extern uid_t fixed_never_users[]; /* Can't be overridden */
604 extern uschar *freeze_tell; /* Message on (some) freezings */
605 extern uschar *freeze_tell_config; /* The configured setting */
606 extern uschar *fudged_queue_times; /* For use in test harness */
608 extern uschar *gecos_name; /* To be expanded when pattern matches */
609 extern uschar *gecos_pattern; /* Pattern to match */
610 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
612 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
613 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
614 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
615 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
616 extern int header_insert_maxlen; /* Max for inserting headers */
617 extern int header_maxsize; /* Max total length for header */
618 extern int header_line_maxsize; /* Max for an individual line */
619 extern header_name header_names[]; /* Table of header names */
620 extern int header_names_size; /* Number of entries */
621 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
622 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
623 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
624 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
625 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
626 extern const uschar *hex_digits; /* Used in several places */
627 extern uschar *hold_domains; /* Hold up deliveries to these */
628 extern uschar *host_data; /* Obtained from lookup in ACL */
629 extern uschar *host_lookup; /* For which IP addresses are always looked up */
630 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
631 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
632 extern uschar *host_lookup_order; /* Order of host lookup types */
633 extern uschar *host_lookup_msg; /* Text for why it failed */
634 extern int host_number; /* For sharing spools */
635 extern uschar *host_number_string; /* For expanding */
636 extern uschar *host_reject_connection; /* Reject these hosts */
637 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
638 extern int hostlist_count; /* Number defined */
639 extern uschar *hosts_connection_nolog; /* Limits the logging option */
640 extern uschar *hosts_treat_as_local; /* For routing */
642 extern int ignore_bounce_errors_after; /* Keep them for this time. */
643 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
644 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
645 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
646 extern uschar *initial_cwd; /* The directory we where in at startup */
647 extern uschar *iterate_item; /* Item from iterate list */
649 extern int journal_fd; /* Fd for journal file */
651 extern uschar *keep_environment; /* Whitelist for environment variables */
652 extern int keep_malformed; /* Time to keep malformed messages */
654 extern uschar *eldap_dn; /* Where LDAP DNs are left */
655 extern int load_average; /* Most recently read load average */
656 extern BOOL local_from_check; /* For adding Sender: (global value) */
657 extern uschar *local_from_prefix; /* Permitted prefixes */
658 extern uschar *local_from_suffix; /* Permitted suffixes */
659 extern uschar *local_interfaces; /* For forcing specific interfaces */
660 #ifdef HAVE_LOCAL_SCAN
661 extern uschar *local_scan_data; /* Text returned by local_scan() */
662 extern optionlist local_scan_options[];/* Option list for local_scan() */
663 extern int local_scan_options_count; /* Size of the list */
664 extern int local_scan_timeout; /* Timeout for local_scan() */
666 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
667 extern gid_t local_user_gid; /* As it says; may be set in routers */
668 extern uid_t local_user_uid; /* As it says; may be set in routers */
669 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
670 extern int localpartlist_count; /* Number defined */
671 extern uschar *log_buffer; /* For constructing log entries */
672 extern int log_default[]; /* Initialization list for log_selector */
673 extern uschar *log_file_path; /* If unset, use default */
674 extern int log_notall[]; /* Log options excluded from +all */
675 extern bit_table log_options[]; /* Table of options */
676 extern int log_options_count; /* Size of table */
677 extern int log_reject_target; /* Target log for ACL rejections */
678 extern unsigned int log_selector[]; /* Bit map of logging options */
679 extern uschar *log_selector_string; /* As supplied in the config */
680 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
681 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
682 extern uschar *login_sender_address; /* The actual sender address */
683 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
684 extern int lookup_list_count; /* Number of entries in the list */
685 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
686 extern int lookup_open_max; /* Max lookup files to cache */
687 extern uschar *lookup_value; /* Value looked up from file */
689 extern macro_item *macros; /* Configuration macros */
690 extern macro_item *macros_user; /* Non-builtin configuration macros */
691 extern macro_item *mlast; /* Last item in macro list */
692 extern uschar *mailstore_basename; /* For mailstore deliveries */
693 #ifdef WITH_CONTENT_SCAN
694 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
696 extern int max_received_linelength;/* What it says */
697 extern int max_username_length; /* For systems with broken getpwnam() */
698 extern int message_age; /* In seconds */
699 extern uschar *message_body; /* Start of message body for filter */
700 extern uschar *message_body_end; /* End of message body for filter */
701 extern BOOL message_body_newlines; /* FALSE => remove newlines */
702 extern int message_body_size; /* Sic */
703 extern int message_body_visible; /* Amount visible in message_body */
704 extern int message_ended; /* State of message reading and how ended */
705 extern uschar *message_headers; /* When built */
706 extern uschar message_id_option[]; /* -E<message-id> for use as option */
707 extern uschar *message_id_external; /* External form of following */
708 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
709 extern uschar *message_id_text; /* Expanded to form message_id */
710 extern struct timeval message_id_tv; /* Time used to create last message_id */
711 extern int message_linecount; /* As it says */
712 extern BOOL message_logs; /* TRUE to write message logs */
713 extern int message_size; /* Size of message */
714 extern uschar *message_size_limit; /* As it says */
716 extern BOOL message_smtputf8; /* Internationalized mail handling */
717 extern int message_utf8_downconvert; /* convert from utf8 */
718 const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
720 extern uschar message_subdir[]; /* Subdirectory for messages */
721 extern uschar *message_reference; /* Reference for error messages */
723 /* MIME ACL expandables */
724 #ifdef WITH_CONTENT_SCAN
725 extern int mime_anomaly_level;
726 extern const uschar *mime_anomaly_text;
727 extern uschar *mime_boundary;
728 extern uschar *mime_charset;
729 extern uschar *mime_content_description;
730 extern uschar *mime_content_disposition;
731 extern uschar *mime_content_id;
732 extern unsigned int mime_content_size;
733 extern uschar *mime_content_transfer_encoding;
734 extern uschar *mime_content_type;
735 extern uschar *mime_decoded_filename;
736 extern uschar *mime_filename;
737 extern int mime_is_multipart;
738 extern int mime_is_coverletter;
739 extern int mime_is_rfc822;
740 extern int mime_part_count;
743 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
745 extern uid_t *never_users; /* List of uids never to be used */
746 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
748 extern const int on; /* For setsockopt */
749 extern const int off;
751 extern optionlist optionlist_auths[]; /* These option lists are made */
752 extern int optionlist_auths_size; /* global so that readconf can */
753 extern optionlist optionlist_routers[]; /* see them for printing out */
754 extern int optionlist_routers_size; /* the options. */
755 extern optionlist optionlist_transports[];
756 extern int optionlist_transports_size;
758 extern uid_t original_euid; /* Original effective uid */
759 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
760 extern uschar *originator_login; /* Login of same */
761 extern uschar *originator_name; /* Full name of same */
762 extern uid_t originator_uid; /* Uid of ditto */
763 extern uschar *override_local_interfaces; /* Value of -oX argument */
764 extern uschar *override_pid_file_path; /* Value of -oP argument */
766 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
767 extern uschar *pid_file_path; /* For writing daemon pids */
768 #ifndef DISABLE_PIPE_CONNECT
769 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
771 extern uschar *pipelining_advertise_hosts; /* As it says */
773 extern BOOL prdr_enable; /* As it says */
774 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
776 extern BOOL preserve_message_logs; /* Save msglog files */
777 extern uschar *primary_hostname; /* Primary name of this computer */
778 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
779 extern uschar *process_info; /* For SIGUSR1 output */
780 extern int process_info_len;
781 extern uschar *process_log_path; /* Alternate path */
782 extern const uschar *process_purpose; /* for debug output */
783 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
785 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
786 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
787 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
788 extern int proxy_external_port; /* Port on remote interface of proxy */
789 extern uschar *proxy_local_address; /* IP of local interface of proxy */
790 extern int proxy_local_port; /* Port on local interface of proxy */
791 extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
792 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
795 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
796 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
797 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
799 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
800 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
801 extern uschar *queue_domains; /* Queue these domains */
802 #ifndef DISABLE_QUEUE_RAMP
803 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
805 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
806 /* immediate children */
807 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
808 extern int queue_run_pipe; /* Pipe for synchronizing */
809 extern int queue_interval; /* Queue running interval */
810 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
811 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
812 extern BOOL queue_only; /* TRUE to disable immediate delivery */
813 extern int queue_only_load; /* Max load before auto-queue */
814 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
815 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
816 extern BOOL queue_only_override; /* Allow override from command line */
817 extern BOOL queue_run_in_order; /* As opposed to random */
818 extern uschar *queue_run_max; /* Max queue runners */
819 extern unsigned queue_size; /* items in queue */
820 extern time_t queue_size_next; /* next time to evaluate queue_size */
821 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
823 extern unsigned int random_seed; /* Seed for random numbers */
824 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
825 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
826 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
827 extern uschar *raw_active_hostname; /* Pre-expansion */
828 extern uschar *raw_sender; /* Before rewriting */
829 extern uschar **raw_recipients; /* Before rewriting */
830 extern int raw_recipients_count;
831 extern const uschar * rc_names[]; /* Mostly for debug output */
832 extern int rcpt_count; /* Count of RCPT commands in a message */
833 extern int rcpt_fail_count; /* Those that got 5xx */
834 extern int rcpt_defer_count; /* Those that got 4xx */
835 extern gid_t real_gid; /* Real gid */
836 extern uid_t real_uid; /* Real user running program */
837 extern int receive_linecount; /* Mainly for BSMTP errors */
838 extern int receive_messagecount; /* Mainly for BSMTP errors */
839 extern int receive_timeout; /* For non-SMTP acceptance */
840 extern int received_count; /* Count of Received: headers */
841 extern uschar *received_for; /* For "for" field */
842 extern uschar *received_header_text; /* Definition of Received: header */
843 extern int received_headers_max; /* Max count of Received: headers */
844 extern struct timeval received_time; /* Time the message was received */
845 extern struct timeval received_time_taken; /* Interval the message took to be received */
846 extern uschar *recipient_data; /* lookup data for recipients */
847 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
848 extern uschar *recipient_verify_failure; /* What went wrong */
849 extern int recipients_list_max; /* Maximum number fitting in list */
850 extern int recipients_max; /* Max permitted */
851 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
852 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
853 extern const pcre *regex_check_dns_names; /* For DNS name checking */
854 extern const pcre *regex_From; /* For recognizing "From_" lines */
855 extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
856 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
857 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
858 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
859 #ifndef DISABLE_PIPE_CONNECT
860 extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
862 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
863 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
864 extern uschar *regex_vars[]; /* $regexN variables */
865 #ifdef WHITELIST_D_MACROS
866 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
868 #ifdef WITH_CONTENT_SCAN
869 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
871 extern int remote_delivery_count; /* Number of remote addresses */
872 extern int remote_max_parallel; /* Maximum parallel delivery */
873 extern uschar *remote_sort_domains; /* Remote domain sorting order */
874 extern retry_config *retries; /* Chain of retry config information */
875 extern int retry_data_expire; /* When to expire retry data */
876 extern int retry_interval_max; /* Absolute maximum */
877 extern int retry_maximum_timeout; /* The maximum timeout */
878 extern uschar *return_path; /* Return path for a message */
879 extern BOOL return_path_remove; /* Remove return-path headers */
880 extern int rewrite_existflags; /* Indicate which headers have rewrites */
881 extern uschar *rfc1413_hosts; /* RFC hosts */
882 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
883 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
884 extern uid_t root_gid; /* The gid for root */
885 extern uid_t root_uid; /* The uid for root */
886 extern router_info routers_available[];/* Vector of available routers */
887 extern router_instance *routers; /* Chain of instantiated routers */
888 extern router_instance router_defaults;/* Default values */
889 extern uschar *router_name; /* Name of router last started */
890 extern tree_node *router_var; /* Variables set by router */
891 extern ip_address_item *running_interfaces; /* Host's running interfaces */
892 extern uschar *running_status; /* Flag string for testing */
893 extern int runrc; /* rc from ${run} */
895 extern uschar *search_error_message; /* Details of lookup problem */
896 extern uschar *self_hostname; /* Self host after routing->directors */
897 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
898 extern uschar *sender_address_data; /* address_data from sender verify */
899 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
900 extern uschar *sender_data; /* lookup result for senders */
901 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
902 extern uschar *sender_fullhost; /* Sender host name + address */
903 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
904 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
905 extern uschar **sender_host_aliases; /* Points to list of alias names */
906 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
907 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
908 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
909 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
910 extern uschar *sender_rate; /* Sender rate computed by ACL */
911 extern uschar *sender_rate_limit; /* Configured rate limit */
912 extern uschar *sender_rate_period; /* Configured smoothing period */
913 extern uschar *sender_rcvhost; /* Host data for Received: */
914 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
915 extern uschar *sender_verify_failure; /* What went wrong */
916 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
917 extern address_item *sender_verified_failed; /* The one that caused denial */
918 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
919 extern int sending_port; /* Port of outgoing interface */
920 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
921 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
922 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
923 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
924 extern int smtp_accept_count; /* Count of connections */
925 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
926 extern int smtp_accept_max; /* Max SMTP connections */
927 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
928 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
929 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
930 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
931 extern int smtp_accept_queue; /* Queue after so many connections */
932 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
933 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
934 extern uschar *smtp_active_hostname; /* Hostname for this message */
935 extern uschar *smtp_banner; /* Banner string (to be expanded) */
936 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
937 extern int smtp_ch_index; /* Index in smtp_connection_had */
938 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
939 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
940 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
941 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
942 extern int smtp_connect_backlog; /* Max backlog permitted */
943 extern double smtp_delay_mail; /* Current MAIL delay */
944 extern double smtp_delay_rcpt; /* Current RCPT delay */
945 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
946 extern uschar *smtp_etrn_command; /* Command to run */
947 extern BOOL smtp_etrn_serialize; /* Only one at once */
948 extern FILE *smtp_in; /* Incoming SMTP input file */
949 extern int smtp_load_reserve; /* Only from reserved if load > this */
950 extern int smtp_mailcmd_count; /* Count of MAIL commands */
951 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
952 extern int smtp_max_unknown_commands; /* As it says */
953 extern uschar *smtp_names[]; /* decode for command codes */
954 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
955 extern FILE *smtp_out; /* Incoming SMTP output file */
956 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
957 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
958 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
959 extern uschar *smtp_read_error; /* Message for SMTP input error */
960 extern int smtp_receive_timeout; /* Applies to each received line */
961 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
962 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
963 extern BOOL smtp_return_error_details; /* TRUE to return full info */
964 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
965 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
966 extern int smtp_rlm_limit; /* Max delay */
967 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
968 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
969 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
970 extern int smtp_rlr_limit; /* Max delay */
971 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
972 extern unsigned smtp_peer_options; /* Global flags for passed connections */
973 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
975 extern uschar *smtputf8_advertise_hosts; /* ingress control */
978 #ifdef WITH_CONTENT_SCAN
979 extern uschar *spamd_address; /* address for the spamassassin daemon */
980 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
981 extern uschar *spam_report; /* the spamd report (multiline) */
982 extern uschar *spam_action; /* the spamd recommended-action */
983 extern uschar *spam_score; /* the spam score (float) */
984 extern uschar *spam_score_int; /* spam_score * 10 (int) */
987 extern uschar *spf_guess; /* spf best-guess record */
988 extern uschar *spf_header_comment; /* spf header comment */
989 extern uschar *spf_received; /* Received-SPF: header */
990 extern uschar *spf_result; /* spf result in string form */
991 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
992 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
993 extern uschar *spf_smtp_comment_template;
994 /* template to construct the spf comment by libspf2 */
996 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
997 extern FILE *spool_data_file; /* handle for -D file */
998 extern uschar *spool_directory; /* Name of spool directory */
999 extern BOOL spool_wireformat; /* can write wireformat -D files */
1000 #ifdef EXPERIMENTAL_SRS_ALT
1001 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
1002 extern uschar *srs_db_address; /* SRS db address */
1003 extern uschar *srs_db_key; /* SRS db key */
1004 extern int srs_hashlength; /* SRS hash length */
1005 extern int srs_hashmin; /* SRS minimum hash length */
1006 extern int srs_maxage; /* SRS max age */
1007 extern uschar *srs_orig_sender; /* SRS original sender */
1008 extern uschar *srs_orig_recipient; /* SRS original recipient */
1009 extern uschar *srs_recipient; /* SRS recipient */
1010 extern uschar *srs_secrets; /* SRS secrets list */
1011 extern uschar *srs_status; /* SRS staus */
1012 extern BOOL srs_usehash; /* SRS use hash flag */
1013 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
1016 extern uschar *srs_recipient; /* SRS recipient */
1018 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1019 extern int string_datestamp_offset;/* After insertion by string_format */
1020 extern int string_datestamp_length;/* After insertion by string_format */
1021 extern int string_datestamp_type; /* After insertion by string_format */
1022 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1023 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1024 extern const uschar *submission_domain;/* Domain for submission mode */
1025 extern const uschar *submission_name; /* User name set from ACL */
1026 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1027 extern int syslog_facility; /* As defined by Syslog.h */
1028 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1029 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1030 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1031 extern uschar *system_filter; /* Name of system filter file */
1033 extern uschar *system_filter_directory_transport; /* Transports for the */
1034 extern uschar *system_filter_file_transport; /* system filter */
1035 extern uschar *system_filter_pipe_transport;
1036 extern uschar *system_filter_reply_transport;
1038 extern gid_t system_filter_gid; /* Gid for running system filter */
1039 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1040 extern uid_t system_filter_uid; /* Uid for running system filter */
1041 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1043 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1044 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1045 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1046 #ifdef USE_TCP_WRAPPERS
1047 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1049 extern int test_harness_load_avg; /* For use when testing */
1050 extern int thismessage_size_limit; /* Limit for this message */
1051 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1052 #ifdef MEASURE_TIMING
1053 extern struct timeval timestamp_startup; /* For development measurements */
1056 extern uschar *transport_name; /* Name of transport last started */
1057 extern int transport_count; /* Count of bytes transported */
1058 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1059 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1060 extern int transport_filter_timeout; /* Timeout for same */
1062 extern transport_info transports_available[]; /* Vector of available transports */
1063 extern transport_instance *transports; /* Chain of instantiated transports */
1064 extern transport_instance transport_defaults; /* Default values */
1066 extern int transport_write_timeout;/* Set to time out individual writes */
1068 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1069 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1070 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1071 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1073 extern gid_t *trusted_groups; /* List of trusted groups */
1074 extern uid_t *trusted_users; /* List of trusted users */
1075 extern uschar *timezone_string; /* Required timezone setting */
1077 extern uschar *unknown_login; /* To use when login id unknown */
1078 extern uschar *unknown_username; /* Ditto */
1079 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1080 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1081 extern uschar *uucp_from_sender; /* For building the sender */
1083 extern uschar *warn_message_file; /* Template for warning messages */
1084 extern uschar *warnmsg_delay; /* String form of delay time */
1085 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1086 extern BOOL write_rejectlog; /* Control of reject logging */
1088 extern uschar *verify_mode; /* Running a router in verify mode */
1089 extern uschar *version_copyright; /* Copyright notice */
1090 extern uschar *version_date; /* Date of compilation */
1091 extern uschar *version_cnumber; /* Compile number */
1092 extern uschar *version_string; /* Version string */
1094 extern int warning_count; /* Delay warnings sent for this msg */
1096 /* End of globals.h */
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