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 */
144 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
146 extern uschar *dsn_envid; /* DSN envid string */
147 extern int dsn_ret; /* DSN ret type*/
148 extern const pcre *regex_DSN; /* For recognizing DSN settings */
149 extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
151 /* Input-reading functions for messages, so we can use special ones for
154 extern int (*lwr_receive_getc)(unsigned);
155 extern uschar * (*lwr_receive_getbuf)(unsigned *);
156 extern int (*lwr_receive_ungetc)(int);
157 extern int (*receive_getc)(unsigned);
158 extern uschar * (*receive_getbuf)(unsigned *);
159 extern void (*receive_get_cache)(void);
160 extern int (*receive_ungetc)(int);
161 extern int (*receive_feof)(void);
162 extern int (*receive_ferror)(void);
163 extern BOOL (*receive_smtp_buffered)(void);
166 /* For clearing, saving, restoring address expansion variables. We have to have
167 the size of this vector set explicitly, because it is referenced from more than
170 extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
172 /* Flags for which we don't need an address ever so can use a bitfield */
174 extern struct global_flags {
175 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
176 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
177 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
178 BOOL address_test_mode :1; /* True for -bt */
179 BOOL admin_user :1; /* True if caller can do admin */
180 BOOL allow_auth_unadvertised :1; /* As it says */
181 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
182 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
183 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
185 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
187 BOOL chunking_offered :1;
188 BOOL config_changed :1; /* True if -C used */
189 BOOL continue_more :1; /* Flag more addresses waiting */
191 BOOL daemon_listen :1; /* True if listening required */
192 BOOL debug_daemon :1; /* Debug the daemon process only */
193 BOOL deliver_firsttime :1; /* True for first delivery attempt */
194 BOOL deliver_force :1; /* TRUE if delivery was forced */
195 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
196 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
197 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
198 BOOL deliver_selectstring_regex :1; /* String is regex */
199 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
200 BOOL disable_callout_flush :1; /* Don't flush before callouts */
201 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
202 BOOL disable_logging :1; /* Disables log writing when TRUE */
204 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
205 BOOL dkim_init_done :1; /* lazy-init status */
208 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
209 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
210 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
212 BOOL dont_deliver :1; /* TRUE for -N option */
213 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
215 BOOL enable_dollar_recipients :1; /* Make $recipients available */
216 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
218 BOOL filter_running :1; /* TRUE while running a filter */
220 BOOL header_rewritten :1; /* TRUE if header changed by router */
221 BOOL helo_verified :1; /* True if HELO verified */
222 BOOL helo_verify_failed :1; /* True if attempt failed */
223 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
224 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
226 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
227 BOOL is_inetd :1; /* True for inetd calls */
229 BOOL local_error_message :1; /* True if handling one of these */
230 BOOL log_testing_mode :1; /* TRUE in various testing modes */
232 #ifdef WITH_CONTENT_SCAN
233 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
235 BOOL no_multiline_responses :1; /* For broken clients */
237 BOOL parse_allow_group :1; /* Allow group syntax */
238 BOOL parse_found_group :1; /* In the middle of a group */
239 BOOL pipelining_enable :1; /* As it says */
240 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
241 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
244 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
245 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
246 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
247 BOOL queue_run_force :1; /* TRUE to force during queue run */
248 BOOL queue_run_local :1; /* Local deliveries only in queue run */
249 BOOL queue_running :1; /* TRUE for queue running process and */
250 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
252 BOOL really_exim :1; /* FALSE in utilities */
253 BOOL receive_call_bombout :1; /* Flag for crashing log */
254 BOOL recipients_discarded :1; /* By an ACL */
255 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
257 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
258 BOOL sender_address_forced :1; /* Set by -f */
259 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
260 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
261 BOOL sender_local :1; /* TRUE for local senders */
262 BOOL sender_name_forced :1; /* Set by -F */
263 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
264 BOOL smtp_authenticated :1; /* Sending client has authenticated */
265 #ifndef DISABLE_PIPE_CONNECT
266 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
267 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
268 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
270 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
271 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
272 BOOL smtp_in_quit :1; /* server noted QUIT command */
273 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
274 BOOL submission_mode :1; /* Can be forced from ACL */
275 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
276 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
277 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
278 BOOL system_filtering :1; /* TRUE when running system filter */
280 BOOL taint_check_slow :1; /* malloc/mmap are not returning distinct ranges */
281 BOOL testsuite_delays :1; /* interprocess sequencing delays, under testsuite */
282 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
283 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
284 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
285 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
286 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
287 BOOL timestamps_utc :1; /* Use UTC for all times */
288 BOOL transport_filter_timed_out :1; /* True if it did */
289 BOOL trusted_caller :1; /* Caller is trusted */
290 BOOL trusted_config :1; /* Configuration file is trusted */
294 /* General global variables */
296 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
297 extern uschar *add_environment; /* List of environment variables to add */
298 extern header_line *acl_added_headers; /* Headers added by an ACL */
299 extern tree_node *acl_anchor; /* Tree of named ACLs */
300 extern uschar *acl_arg[9]; /* Argument to ACL call */
301 extern int acl_narg; /* Number of arguments to ACL call */
302 extern int acl_level; /* Nesting depth and debug indent */
303 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
304 #ifdef WITH_CONTENT_SCAN
305 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
307 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
308 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
309 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
310 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
311 extern uschar *acl_smtp_data; /* ACL run after DATA received */
313 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
314 const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
317 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
319 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
320 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
321 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
322 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
323 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
324 #ifdef WITH_CONTENT_SCAN
325 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
327 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
328 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
329 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
330 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
331 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
332 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
333 extern tree_node *acl_var_c; /* ACL connection variables */
334 extern tree_node *acl_var_m; /* ACL message variables */
335 extern uschar *acl_verify_message; /* User message for verify failure */
336 extern string_item *acl_warn_logged; /* Logged lines */
337 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
338 extern uschar *acl_wherenames[]; /* Names for messages */
339 extern address_item *addr_duplicate; /* Duplicate address list */
340 extern address_item address_defaults; /* Default data for address item */
341 extern uschar *address_file; /* Name of file when delivering to one */
342 extern uschar *address_pipe; /* Pipe command when delivering to one */
343 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
344 extern int addresslist_count; /* Number defined */
345 extern gid_t *admin_groups; /* List of admin groups */
346 extern BOOL allow_domain_literals; /* As it says */
347 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
348 #ifdef EXPERIMENTAL_ARC
349 extern struct arc_set *arc_received; /* highest ARC instance evaluation struct */
350 extern int arc_received_instance; /* highest ARC instance number in headers */
351 extern int arc_oldest_pass; /* lowest passing instance number in headers */
352 extern const uschar *arc_state; /* verification state */
353 extern const uschar *arc_state_reason;
355 extern BOOL allow_utf8_domains; /* For experimenting */
356 extern uschar *authenticated_fail_id; /* ID that failed authentication */
357 extern uschar *authenticated_id; /* ID that was authenticated */
358 extern uschar *authenticated_sender; /* From AUTH on MAIL */
359 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
360 extern uschar *auth_advertise_hosts; /* Only advertise to these */
361 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
362 extern auth_instance *auths; /* Chain of instantiated auths */
363 extern auth_instance auth_defaults; /* Default values */
364 extern uschar *auth_defer_msg; /* Error message for log */
365 extern uschar *auth_defer_user_msg; /* Error message for user */
366 extern uschar *auth_vars[]; /* $authn variables */
367 extern int auto_thaw; /* Auto-thaw interval */
368 #ifdef WITH_CONTENT_SCAN
369 extern int av_failed; /* TRUE if the AV process failed */
370 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
373 extern uschar *base62_chars; /* Table of base-62 characters */
374 extern uschar *bi_command; /* Command for -bi option */
375 extern uschar *big_buffer; /* Used for various temp things */
376 extern int big_buffer_size; /* Current size (can expand) */
377 #ifdef EXPERIMENTAL_BRIGHTMAIL
378 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
379 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
380 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
381 extern uschar *bmi_config_file; /* Brightmail config file */
382 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
383 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
384 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
386 extern int bsmtp_transaction_linecount; /* Start of last transaction */
387 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
388 extern uschar *bounce_message_file; /* Template file */
389 extern uschar *bounce_message_text; /* One-liner */
390 extern uschar *bounce_recipient; /* When writing an errmsg */
391 extern BOOL bounce_return_body; /* Include body in returned message */
392 extern int bounce_return_linesize_limit; /* Max line length in return */
393 extern BOOL bounce_return_message; /* Include message in bounce */
394 extern int bounce_return_size_limit; /* Max amount to return */
395 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
397 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
398 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
399 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
400 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
401 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
402 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
403 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
404 extern int check_log_inodes; /* Minimum for message acceptance */
405 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
406 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
407 extern int check_spool_inodes; /* Minimum for message acceptance */
408 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
409 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
410 extern unsigned chunking_datasize;
411 extern unsigned chunking_data_left;
412 extern chunking_state_t chunking_state;
413 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
414 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
415 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
416 extern int clmacro_count; /* Number of command line macros */
417 extern uschar *clmacros[]; /* Copy of them, for re-exec */
418 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
419 extern int connection_max_messages;/* Max down one SMTP connection */
420 extern FILE *config_file; /* Configuration file */
421 extern const uschar *config_filename; /* Configuration file name */
422 extern gid_t config_gid; /* Additional group owner */
423 extern int config_lineno; /* Line number */
424 extern uschar *config_main_filelist; /* List of possible config files */
425 extern uschar *config_main_filename; /* File name actually used */
426 extern uschar *config_main_directory; /* Directory where the main config file was found */
427 extern uid_t config_uid; /* Additional owner */
428 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
429 extern uschar *continue_hostname; /* Host for continued delivery */
430 extern uschar *continue_host_address; /* IP address for ditto */
431 extern int continue_sequence; /* Sequence num for continued delivery */
432 extern uschar *continue_transport; /* Transport for continued delivery */
434 extern uschar *csa_status; /* Client SMTP Authorization result */
437 unsigned callout_hold_only:1; /* Conn is only for verify callout */
438 unsigned delivery:1; /* When to attempt */
439 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
440 unsigned is_tls:1; /* Conn has TLS active */
441 client_conn_ctx cctx; /* Open connection */
442 int nrcpt; /* Count of addresses */
443 uschar * transport; /* Name of transport */
444 uschar * interface; /* (address of) */
445 uschar * snd_ip; /* sending_ip_address */
446 int snd_port; /* sending_port */
447 unsigned peer_options; /* smtp_peer_options */
448 host_item host; /* Host used */
449 address_item addr; /* (Chain of) addresses */
451 extern cut_t cutthrough; /* Deliver-concurrently */
453 extern int daemon_notifier_fd; /* Unix socket for notifications */
454 extern uschar *daemon_smtp_port; /* Can be a list of ports */
455 extern int daemon_startup_retries; /* Number of times to retry */
456 extern int daemon_startup_sleep; /* Sleep between retries */
458 #ifdef EXPERIMENTAL_DCC
459 extern BOOL dcc_direct_add_header; /* directly add header */
460 extern uschar *dcc_header; /* dcc header */
461 extern uschar *dcc_result; /* dcc result */
462 extern uschar *dccifd_address; /* address of the dccifd daemon */
463 extern uschar *dccifd_options; /* options for the dccifd daemon */
466 extern int debug_fd; /* The fd for debug_file */
467 extern FILE *debug_file; /* Where to write debugging info */
468 extern int debug_notall[]; /* Debug options excluded from +all */
469 extern bit_table debug_options[]; /* Table of debug options */
470 extern int debug_options_count; /* Size of table */
471 extern BOOL debug_store; /* Do extra checks on store_reset */
472 extern int delay_warning[]; /* Times between warnings */
473 extern uschar *delay_warning_condition; /* Condition string for warnings */
474 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
476 extern uschar *deliver_address_data; /* Arbitrary data for an address */
477 extern int deliver_datafile; /* FD for data part of message */
478 extern const uschar *deliver_domain; /* The local domain for delivery */
479 extern uschar *deliver_domain_data; /* From domain lookup */
480 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
481 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
482 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
483 extern time_t deliver_frozen_at; /* Time of freezing */
484 extern uschar *deliver_home; /* Home directory for pipes */
485 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
486 /* Remote host for filter */
487 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
488 extern int deliver_host_port; /* Address for remote delivery filter */
489 extern uschar *deliver_in_buffer; /* Buffer for copying file */
490 extern ino_t deliver_inode; /* Inode for appendfile */
491 extern uschar *deliver_localpart; /* The local part for delivery */
492 extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
493 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
494 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
495 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
496 extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
497 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
498 extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
499 extern uschar *deliver_out_buffer; /* Buffer for copying file */
500 extern int deliver_queue_load_max; /* Different value for queue running */
501 extern address_item *deliver_recipients; /* Current set of addresses */
502 extern uschar *deliver_selectstring; /* For selecting by recipient */
503 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
504 #ifdef ENABLE_DISABLE_FSYNC
505 extern BOOL disable_fsync; /* Not for normal use */
507 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
510 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
511 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
512 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
513 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
514 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
515 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
516 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
517 extern uschar *dkim_verify_hashes; /* Preference order for signatures */
518 extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
519 extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
520 extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
521 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
522 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
523 extern uschar *dkim_verify_status; /* result for this signature */
524 extern uschar *dkim_verify_reason; /* result for this signature */
527 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
528 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
529 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
530 extern uschar *dmarc_status; /* Expansion variable, one word value */
531 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
532 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
533 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
536 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
537 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
538 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
539 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
540 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
542 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
544 extern int dns_retrans; /* Retransmission time setting */
545 extern int dns_retry; /* Number of retries */
546 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
547 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
548 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
549 extern uschar *dnslist_domain; /* DNS (black) list domain */
550 extern uschar *dnslist_matched; /* DNS (black) list matched key */
551 extern uschar *dnslist_text; /* DNS (black) list text message */
552 extern uschar *dnslist_value; /* DNS (black) list IP address */
553 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
554 extern int domainlist_count; /* Number defined */
556 /* This option is now a no-opt, retained for compatibility */
557 extern BOOL drop_cr; /* For broken local MUAs */
559 extern uschar *dsn_from; /* From: string for DSNs */
561 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
562 extern int errno_quota; /* Quota errno in this OS */
563 extern int error_handling; /* Error handling style */
564 extern uschar *errors_copy; /* For taking copies of errors */
565 extern uschar *errors_reply_to; /* Reply-to for error messages */
566 extern int errors_sender_rc; /* Return after message to sender*/
568 #ifndef DISABLE_EVENT
569 extern uschar *event_action; /* expansion for delivery events */
570 extern uschar *event_data; /* event data */
571 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
572 extern const uschar *event_name; /* event classification */
575 extern gid_t exim_gid; /* To be used with exim_uid */
576 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
577 extern uschar *exim_path; /* Path to exec exim */
578 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
579 extern uid_t exim_uid; /* Non-root uid for exim */
580 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
581 extern int expand_level; /* Nesting depth; indent for debug */
582 extern int expand_forbid; /* RDO flags for forbidding things */
583 extern int expand_nlength[]; /* Lengths of numbered strings */
584 extern int expand_nmax; /* Max numerical value */
585 extern uschar *expand_nstring[]; /* Numbered strings */
586 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
587 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
589 extern int fake_response; /* Fake FAIL or DEFER response to data */
590 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
591 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
592 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
593 extern int filter_test; /* Filter test type */
594 extern uschar *filter_test_sfile; /* System filter test file */
595 extern uschar *filter_test_ufile; /* User filter test file */
596 extern uschar *filter_thisaddress; /* For address looping */
597 extern int finduser_retries; /* Retry count for getpwnam() */
598 extern uid_t fixed_never_users[]; /* Can't be overridden */
599 extern uschar *freeze_tell; /* Message on (some) freezings */
600 extern uschar *freeze_tell_config; /* The configured setting */
601 extern uschar *fudged_queue_times; /* For use in test harness */
603 extern uschar *gecos_name; /* To be expanded when pattern matches */
604 extern uschar *gecos_pattern; /* Pattern to match */
605 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
607 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
608 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
609 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
610 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
611 extern int header_insert_maxlen; /* Max for inserting headers */
612 extern int header_maxsize; /* Max total length for header */
613 extern int header_line_maxsize; /* Max for an individual line */
614 extern header_name header_names[]; /* Table of header names */
615 extern int header_names_size; /* Number of entries */
616 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
617 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
618 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
619 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
620 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
621 extern const uschar *hex_digits; /* Used in several places */
622 extern uschar *hold_domains; /* Hold up deliveries to these */
623 extern uschar *host_data; /* Obtained from lookup in ACL */
624 extern uschar *host_lookup; /* For which IP addresses are always looked up */
625 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
626 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
627 extern uschar *host_lookup_order; /* Order of host lookup types */
628 extern uschar *host_lookup_msg; /* Text for why it failed */
629 extern int host_number; /* For sharing spools */
630 extern uschar *host_number_string; /* For expanding */
631 extern uschar *host_reject_connection; /* Reject these hosts */
632 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
633 extern int hostlist_count; /* Number defined */
634 extern uschar *hosts_connection_nolog; /* Limits the logging option */
635 extern uschar *hosts_treat_as_local; /* For routing */
637 extern int ignore_bounce_errors_after; /* Keep them for this time. */
638 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
639 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
640 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
641 extern uschar *initial_cwd; /* The directory we where in at startup */
642 extern uschar *iterate_item; /* Item from iterate list */
644 extern int journal_fd; /* Fd for journal file */
646 extern uschar *keep_environment; /* Whitelist for environment variables */
647 extern int keep_malformed; /* Time to keep malformed messages */
649 extern uschar *eldap_dn; /* Where LDAP DNs are left */
650 extern int load_average; /* Most recently read load average */
651 extern BOOL local_from_check; /* For adding Sender: (global value) */
652 extern uschar *local_from_prefix; /* Permitted prefixes */
653 extern uschar *local_from_suffix; /* Permitted suffixes */
654 extern uschar *local_interfaces; /* For forcing specific interfaces */
655 #ifdef HAVE_LOCAL_SCAN
656 extern uschar *local_scan_data; /* Text returned by local_scan() */
657 extern optionlist local_scan_options[];/* Option list for local_scan() */
658 extern int local_scan_options_count; /* Size of the list */
659 extern int local_scan_timeout; /* Timeout for local_scan() */
661 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
662 extern gid_t local_user_gid; /* As it says; may be set in routers */
663 extern uid_t local_user_uid; /* As it says; may be set in routers */
664 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
665 extern int localpartlist_count; /* Number defined */
666 extern uschar *log_buffer; /* For constructing log entries */
667 extern int log_default[]; /* Initialization list for log_selector */
668 extern uschar *log_file_path; /* If unset, use default */
669 extern int log_notall[]; /* Log options excluded from +all */
670 extern bit_table log_options[]; /* Table of options */
671 extern int log_options_count; /* Size of table */
672 extern int log_reject_target; /* Target log for ACL rejections */
673 extern unsigned int log_selector[]; /* Bit map of logging options */
674 extern uschar *log_selector_string; /* As supplied in the config */
675 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
676 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
677 extern uschar *login_sender_address; /* The actual sender address */
678 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
679 extern int lookup_list_count; /* Number of entries in the list */
680 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
681 extern int lookup_open_max; /* Max lookup files to cache */
682 extern uschar *lookup_value; /* Value looked up from file */
684 extern macro_item *macros; /* Configuration macros */
685 extern macro_item *macros_user; /* Non-builtin configuration macros */
686 extern macro_item *mlast; /* Last item in macro list */
687 extern uschar *mailstore_basename; /* For mailstore deliveries */
688 #ifdef WITH_CONTENT_SCAN
689 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
691 extern int max_received_linelength;/* What it says */
692 extern int max_username_length; /* For systems with broken getpwnam() */
693 extern int message_age; /* In seconds */
694 extern uschar *message_body; /* Start of message body for filter */
695 extern uschar *message_body_end; /* End of message body for filter */
696 extern BOOL message_body_newlines; /* FALSE => remove newlines */
697 extern int message_body_size; /* Sic */
698 extern int message_body_visible; /* Amount visible in message_body */
699 extern int message_ended; /* State of message reading and how ended */
700 extern uschar *message_headers; /* When built */
701 extern uschar message_id_option[]; /* -E<message-id> for use as option */
702 extern uschar *message_id_external; /* External form of following */
703 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
704 extern uschar *message_id_text; /* Expanded to form message_id */
705 extern struct timeval message_id_tv; /* Time used to create last message_id */
706 extern int message_linecount; /* As it says */
707 extern BOOL message_logs; /* TRUE to write message logs */
708 extern int message_size; /* Size of message */
709 extern uschar *message_size_limit; /* As it says */
711 extern BOOL message_smtputf8; /* Internationalized mail handling */
712 extern int message_utf8_downconvert; /* convert from utf8 */
713 const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
715 extern uschar message_subdir[]; /* Subdirectory for messages */
716 extern uschar *message_reference; /* Reference for error messages */
718 /* MIME ACL expandables */
719 #ifdef WITH_CONTENT_SCAN
720 extern int mime_anomaly_level;
721 extern const uschar *mime_anomaly_text;
722 extern uschar *mime_boundary;
723 extern uschar *mime_charset;
724 extern uschar *mime_content_description;
725 extern uschar *mime_content_disposition;
726 extern uschar *mime_content_id;
727 extern unsigned int mime_content_size;
728 extern uschar *mime_content_transfer_encoding;
729 extern uschar *mime_content_type;
730 extern uschar *mime_decoded_filename;
731 extern uschar *mime_filename;
732 extern int mime_is_multipart;
733 extern int mime_is_coverletter;
734 extern int mime_is_rfc822;
735 extern int mime_part_count;
738 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
740 extern uid_t *never_users; /* List of uids never to be used */
741 extern uschar *notifier_socket; /* Name for daemon notifier unix-socket */
743 extern const int on; /* For setsockopt */
744 extern const int off;
746 extern optionlist optionlist_auths[]; /* These option lists are made */
747 extern int optionlist_auths_size; /* global so that readconf can */
748 extern optionlist optionlist_routers[]; /* see them for printing out */
749 extern int optionlist_routers_size; /* the options. */
750 extern optionlist optionlist_transports[];
751 extern int optionlist_transports_size;
753 extern uid_t original_euid; /* Original effective uid */
754 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
755 extern uschar *originator_login; /* Login of same */
756 extern uschar *originator_name; /* Full name of same */
757 extern uid_t originator_uid; /* Uid of ditto */
758 extern uschar *override_local_interfaces; /* Value of -oX argument */
759 extern uschar *override_pid_file_path; /* Value of -oP argument */
761 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
762 extern uschar *pid_file_path; /* For writing daemon pids */
763 #ifndef DISABLE_PIPE_CONNECT
764 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
766 extern uschar *pipelining_advertise_hosts; /* As it says */
768 extern BOOL prdr_enable; /* As it says */
769 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
771 extern BOOL preserve_message_logs; /* Save msglog files */
772 extern uschar *primary_hostname; /* Primary name of this computer */
773 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
774 extern uschar *process_info; /* For SIGUSR1 output */
775 extern int process_info_len;
776 extern uschar *process_log_path; /* Alternate path */
777 extern const uschar *process_purpose; /* for debug output */
778 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
780 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
781 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
782 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
783 extern int proxy_external_port; /* Port on remote interface of proxy */
784 extern uschar *proxy_local_address; /* IP of local interface of proxy */
785 extern int proxy_local_port; /* Port on local interface of proxy */
786 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
789 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
790 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
791 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
793 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
794 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
795 extern uschar *queue_domains; /* Queue these domains */
796 #ifndef DISABLE_QUEUE_RAMP
797 extern BOOL queue_fast_ramp; /* 2-phase queue-run overlap */
799 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
800 /* immediate children */
801 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
802 extern int queue_run_pipe; /* Pipe for synchronizing */
803 extern int queue_interval; /* Queue running interval */
804 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
805 extern uschar *queue_name_dest; /* Destination queue, for moving messages */
806 extern BOOL queue_only; /* TRUE to disable immediate delivery */
807 extern int queue_only_load; /* Max load before auto-queue */
808 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
809 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
810 extern BOOL queue_only_override; /* Allow override from command line */
811 extern BOOL queue_run_in_order; /* As opposed to random */
812 extern uschar *queue_run_max; /* Max queue runners */
813 extern unsigned queue_size; /* items in queue */
814 extern time_t queue_size_next; /* next time to evaluate queue_size */
815 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
817 extern unsigned int random_seed; /* Seed for random numbers */
818 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
819 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
820 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
821 extern uschar *raw_active_hostname; /* Pre-expansion */
822 extern uschar *raw_sender; /* Before rewriting */
823 extern uschar **raw_recipients; /* Before rewriting */
824 extern int raw_recipients_count;
825 extern const uschar * rc_names[]; /* Mostly for debug output */
826 extern int rcpt_count; /* Count of RCPT commands in a message */
827 extern int rcpt_fail_count; /* Those that got 5xx */
828 extern int rcpt_defer_count; /* Those that got 4xx */
829 extern gid_t real_gid; /* Real gid */
830 extern uid_t real_uid; /* Real user running program */
831 extern int receive_linecount; /* Mainly for BSMTP errors */
832 extern int receive_messagecount; /* Mainly for BSMTP errors */
833 extern int receive_timeout; /* For non-SMTP acceptance */
834 extern int received_count; /* Count of Received: headers */
835 extern uschar *received_for; /* For "for" field */
836 extern uschar *received_header_text; /* Definition of Received: header */
837 extern int received_headers_max; /* Max count of Received: headers */
838 extern struct timeval received_time; /* Time the message was received */
839 extern struct timeval received_time_taken; /* Interval the message took to be received */
840 extern uschar *recipient_data; /* lookup data for recipients */
841 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
842 extern uschar *recipient_verify_failure; /* What went wrong */
843 extern int recipients_list_max; /* Maximum number fitting in list */
844 extern int recipients_max; /* Max permitted */
845 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
846 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
847 extern const pcre *regex_check_dns_names; /* For DNS name checking */
848 extern const pcre *regex_From; /* For recognizing "From_" lines */
849 extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
850 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
851 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
852 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
853 #ifndef DISABLE_PIPE_CONNECT
854 extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
856 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
857 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
858 extern uschar *regex_vars[]; /* $regexN variables */
859 #ifdef WHITELIST_D_MACROS
860 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
862 #ifdef WITH_CONTENT_SCAN
863 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
865 extern int remote_delivery_count; /* Number of remote addresses */
866 extern int remote_max_parallel; /* Maximum parallel delivery */
867 extern uschar *remote_sort_domains; /* Remote domain sorting order */
868 extern retry_config *retries; /* Chain of retry config information */
869 extern int retry_data_expire; /* When to expire retry data */
870 extern int retry_interval_max; /* Absolute maximum */
871 extern int retry_maximum_timeout; /* The maximum timeout */
872 extern uschar *return_path; /* Return path for a message */
873 extern BOOL return_path_remove; /* Remove return-path headers */
874 extern int rewrite_existflags; /* Indicate which headers have rewrites */
875 extern uschar *rfc1413_hosts; /* RFC hosts */
876 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
877 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
878 extern uid_t root_gid; /* The gid for root */
879 extern uid_t root_uid; /* The uid for root */
880 extern router_info routers_available[];/* Vector of available routers */
881 extern router_instance *routers; /* Chain of instantiated routers */
882 extern router_instance router_defaults;/* Default values */
883 extern uschar *router_name; /* Name of router last started */
884 extern tree_node *router_var; /* Variables set by router */
885 extern ip_address_item *running_interfaces; /* Host's running interfaces */
886 extern uschar *running_status; /* Flag string for testing */
887 extern int runrc; /* rc from ${run} */
889 extern uschar *search_error_message; /* Details of lookup problem */
890 extern uschar *self_hostname; /* Self host after routing->directors */
891 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
892 extern uschar *sender_address_data; /* address_data from sender verify */
893 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
894 extern uschar *sender_data; /* lookup result for senders */
895 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
896 extern uschar *sender_fullhost; /* Sender host name + address */
897 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
898 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
899 extern uschar **sender_host_aliases; /* Points to list of alias names */
900 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
901 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
902 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
903 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
904 extern uschar *sender_rate; /* Sender rate computed by ACL */
905 extern uschar *sender_rate_limit; /* Configured rate limit */
906 extern uschar *sender_rate_period; /* Configured smoothing period */
907 extern uschar *sender_rcvhost; /* Host data for Received: */
908 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
909 extern uschar *sender_verify_failure; /* What went wrong */
910 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
911 extern address_item *sender_verified_failed; /* The one that caused denial */
912 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
913 extern int sending_port; /* Port of outgoing interface */
914 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
915 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
916 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
917 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
918 extern int smtp_accept_count; /* Count of connections */
919 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
920 extern int smtp_accept_max; /* Max SMTP connections */
921 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
922 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
923 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
924 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
925 extern int smtp_accept_queue; /* Queue after so many connections */
926 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
927 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
928 extern uschar *smtp_active_hostname; /* Hostname for this message */
929 extern uschar *smtp_banner; /* Banner string (to be expanded) */
930 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
931 extern int smtp_ch_index; /* Index in smtp_connection_had */
932 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
933 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
934 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
935 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
936 extern int smtp_connect_backlog; /* Max backlog permitted */
937 extern double smtp_delay_mail; /* Current MAIL delay */
938 extern double smtp_delay_rcpt; /* Current RCPT delay */
939 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
940 extern uschar *smtp_etrn_command; /* Command to run */
941 extern BOOL smtp_etrn_serialize; /* Only one at once */
942 extern FILE *smtp_in; /* Incoming SMTP input file */
943 extern int smtp_load_reserve; /* Only from reserved if load > this */
944 extern int smtp_mailcmd_count; /* Count of MAIL commands */
945 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
946 extern int smtp_max_unknown_commands; /* As it says */
947 extern uschar *smtp_names[]; /* decode for command codes */
948 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
949 extern FILE *smtp_out; /* Incoming SMTP output file */
950 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
951 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
952 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
953 extern uschar *smtp_read_error; /* Message for SMTP input error */
954 extern int smtp_receive_timeout; /* Applies to each received line */
955 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
956 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
957 extern BOOL smtp_return_error_details; /* TRUE to return full info */
958 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
959 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
960 extern int smtp_rlm_limit; /* Max delay */
961 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
962 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
963 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
964 extern int smtp_rlr_limit; /* Max delay */
965 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
966 extern unsigned smtp_peer_options; /* Global flags for passed connections */
967 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
969 extern uschar *smtputf8_advertise_hosts; /* ingress control */
972 #ifdef WITH_CONTENT_SCAN
973 extern uschar *spamd_address; /* address for the spamassassin daemon */
974 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
975 extern uschar *spam_report; /* the spamd report (multiline) */
976 extern uschar *spam_action; /* the spamd recommended-action */
977 extern uschar *spam_score; /* the spam score (float) */
978 extern uschar *spam_score_int; /* spam_score * 10 (int) */
981 extern uschar *spf_guess; /* spf best-guess record */
982 extern uschar *spf_header_comment; /* spf header comment */
983 extern uschar *spf_received; /* Received-SPF: header */
984 extern uschar *spf_result; /* spf result in string form */
985 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
986 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
987 extern uschar *spf_smtp_comment_template;
988 /* template to construct the spf comment by libspf2 */
990 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
991 extern FILE *spool_data_file; /* handle for -D file */
992 extern uschar *spool_directory; /* Name of spool directory */
993 extern BOOL spool_wireformat; /* can write wireformat -D files */
994 #ifdef EXPERIMENTAL_SRS_ALT
995 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
996 extern uschar *srs_db_address; /* SRS db address */
997 extern uschar *srs_db_key; /* SRS db key */
998 extern int srs_hashlength; /* SRS hash length */
999 extern int srs_hashmin; /* SRS minimum hash length */
1000 extern int srs_maxage; /* SRS max age */
1001 extern uschar *srs_orig_sender; /* SRS original sender */
1002 extern uschar *srs_orig_recipient; /* SRS original recipient */
1003 extern uschar *srs_recipient; /* SRS recipient */
1004 extern uschar *srs_secrets; /* SRS secrets list */
1005 extern uschar *srs_status; /* SRS staus */
1006 extern BOOL srs_usehash; /* SRS use hash flag */
1007 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
1010 extern uschar *srs_recipient; /* SRS recipient */
1012 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
1013 extern int string_datestamp_offset;/* After insertion by string_format */
1014 extern int string_datestamp_length;/* After insertion by string_format */
1015 extern int string_datestamp_type; /* After insertion by string_format */
1016 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
1017 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
1018 extern uschar *submission_domain; /* Domain for submission mode */
1019 extern uschar *submission_name; /* User name set from ACL */
1020 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1021 extern int syslog_facility; /* As defined by Syslog.h */
1022 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
1023 extern uschar *syslog_processname; /* 'ident' param to openlog() */
1024 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1025 extern uschar *system_filter; /* Name of system filter file */
1027 extern uschar *system_filter_directory_transport; /* Transports for the */
1028 extern uschar *system_filter_file_transport; /* system filter */
1029 extern uschar *system_filter_pipe_transport;
1030 extern uschar *system_filter_reply_transport;
1032 extern gid_t system_filter_gid; /* Gid for running system filter */
1033 extern BOOL system_filter_gid_set; /* TRUE if gid set */
1034 extern uid_t system_filter_uid; /* Uid for running system filter */
1035 extern BOOL system_filter_uid_set; /* TRUE if uid set */
1037 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1038 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1039 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1040 #ifdef USE_TCP_WRAPPERS
1041 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1043 extern int test_harness_load_avg; /* For use when testing */
1044 extern int thismessage_size_limit; /* Limit for this message */
1045 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1046 #ifdef MEASURE_TIMING
1047 extern struct timeval timestamp_startup; /* For development measurements */
1050 extern uschar *transport_name; /* Name of transport last started */
1051 extern int transport_count; /* Count of bytes transported */
1052 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1053 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1054 extern int transport_filter_timeout; /* Timeout for same */
1056 extern transport_info transports_available[]; /* Vector of available transports */
1057 extern transport_instance *transports; /* Chain of instantiated transports */
1058 extern transport_instance transport_defaults; /* Default values */
1060 extern int transport_write_timeout;/* Set to time out individual writes */
1062 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1063 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1064 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1065 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1067 extern gid_t *trusted_groups; /* List of trusted groups */
1068 extern uid_t *trusted_users; /* List of trusted users */
1069 extern uschar *timezone_string; /* Required timezone setting */
1071 extern uschar *unknown_login; /* To use when login id unknown */
1072 extern uschar *unknown_username; /* Ditto */
1073 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1074 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1075 extern uschar *uucp_from_sender; /* For building the sender */
1077 extern uschar *warn_message_file; /* Template for warning messages */
1078 extern uschar *warnmsg_delay; /* String form of delay time */
1079 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1080 extern BOOL write_rejectlog; /* Control of reject logging */
1082 extern uschar *verify_mode; /* Running a router in verify mode */
1083 extern uschar *version_copyright; /* Copyright notice */
1084 extern uschar *version_date; /* Date of compilation */
1085 extern uschar *version_cnumber; /* Compile number */
1086 extern uschar *version_string; /* Version string */
1088 extern int warning_count; /* Delay warnings sent for this msg */
1090 /* End of globals.h */
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