1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2018 */
6 /* See the file NOTICE for conditions of use and distribution. */
8 /* Almost all the global variables are defined together in this one header, so
9 that they are easy to find. However, those that are visible during the
10 compilation of the local_scan() function are defined separately in the
11 local_scan.h header file. */
13 /* First put any specials that are required for some operating systems. */
19 /* We need to be careful about width of int and atomicity in signal handlers,
20 especially with the rise of 64-bit systems breaking older assumptions. But
21 sig_atomic_t comes from signal.h so can't go into mytypes.h without including
22 signal support in local_scan, which seems precipitous. */
23 typedef volatile sig_atomic_t SIGNAL_BOOL;
25 /* Now things that are present only when configured. */
28 extern uschar *opt_perl_startup; /* Startup code for Perl interpreter */
29 extern BOOL opt_perl_at_start; /* Start Perl interpreter at start */
30 extern BOOL opt_perl_started; /* Set once interpreter started */
31 extern BOOL opt_perl_taintmode; /* Enable taint mode in Perl */
35 extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
39 extern uschar *ibase_servers;
43 extern uschar *eldap_ca_cert_dir; /* Directory with CA certificates */
44 extern uschar *eldap_ca_cert_file; /* CA certificate file */
45 extern uschar *eldap_cert_file; /* Certificate file */
46 extern uschar *eldap_cert_key; /* Certificate key file */
47 extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
48 extern uschar *eldap_default_servers; /* List of default servers */
49 extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
50 extern BOOL eldap_start_tls; /* Use STARTTLS */
51 extern int eldap_version; /* LDAP version */
55 extern uschar *mysql_servers; /* List of servers and connect info */
59 extern uschar *oracle_servers; /* List of servers and connect info */
63 extern uschar *pgsql_servers; /* List of servers and connect info */
67 extern uschar *redis_servers; /* List of servers and connect info */
71 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
74 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
75 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
78 /* These variables are outside the #ifdef because it keeps the code less
79 cluttered in several places (e.g. during logging) if we can always refer to
80 them. Also, the tls_ variables are now always visible. */
83 client_conn_ctx active; /* fd/socket when in a TLS session, and ptr to TLS context */
84 int bits; /* bits used in TLS session */
85 BOOL certificate_verified; /* Client certificate verified */
87 BOOL dane_verified; /* ... via DANE */
88 int tlsa_usage; /* TLSA record(s) usage */
90 uschar *cipher; /* Cipher used */
91 const uschar *cipher_stdname; /* Cipher used, RFC version */
93 BOOL on_connect; /* For older MTAs that don't STARTTLS */
94 uschar *on_connect_ports; /* Ports always tls-on-connect */
95 void *ourcert; /* Certificate we presented, binary */
96 void *peercert; /* Certificate of peer, binary */
97 uschar *peerdn; /* DN from peer */
98 uschar *sni; /* Server Name Indication */
100 OCSP_NOT_REQ=0, /* not requested */
101 OCSP_NOT_RESP, /* no response to request */
102 OCSP_VFY_NOT_TRIED, /* response not verified */
103 OCSP_FAILED, /* verify failed */
104 OCSP_VFIED /* verified */
105 } ocsp; /* Stapled OCSP status */
107 extern tls_support tls_in;
108 extern tls_support tls_out;
111 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
112 extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
113 extern uschar *openssl_options; /* OpenSSL compatibility options */
114 extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
115 extern uschar *tls_certificate; /* Certificate file */
116 extern uschar *tls_channelbinding_b64; /* string of base64 channel binding */
117 extern uschar *tls_crl; /* CRL File */
118 extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
119 extern uschar *tls_dhparam; /* DH param file */
120 extern uschar *tls_eccurve; /* EC curve */
121 # ifndef DISABLE_OCSP
122 extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
124 extern uschar *tls_privatekey; /* Private key file */
125 extern BOOL tls_remember_esmtp; /* For YAEB */
126 extern uschar *tls_require_ciphers; /* So some can be avoided */
127 extern uschar *tls_try_verify_hosts; /* Optional client verification */
128 extern uschar *tls_verify_certificates;/* Path for certificates to check */
129 extern uschar *tls_verify_hosts; /* Mandatory client verification */
131 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
133 extern uschar *dsn_envid; /* DSN envid string */
134 extern int dsn_ret; /* DSN ret type*/
135 extern const pcre *regex_DSN; /* For recognizing DSN settings */
136 extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
138 /* Input-reading functions for messages, so we can use special ones for
141 extern int (*lwr_receive_getc)(unsigned);
142 extern uschar * (*lwr_receive_getbuf)(unsigned *);
143 extern int (*lwr_receive_ungetc)(int);
144 extern int (*receive_getc)(unsigned);
145 extern uschar * (*receive_getbuf)(unsigned *);
146 extern void (*receive_get_cache)(void);
147 extern int (*receive_ungetc)(int);
148 extern int (*receive_feof)(void);
149 extern int (*receive_ferror)(void);
150 extern BOOL (*receive_smtp_buffered)(void);
153 /* For clearing, saving, restoring address expansion variables. We have to have
154 the size of this vector set explicitly, because it is referenced from more than
157 extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
159 /* Flags for which we don't need an address ever so can use a bitfield */
161 extern struct global_flags {
162 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
163 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
164 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
165 BOOL address_test_mode :1; /* True for -bt */
166 BOOL admin_user :1; /* True if caller can do admin */
167 BOOL allow_auth_unadvertised :1; /* As it says */
168 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
169 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
170 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
172 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
174 BOOL chunking_offered :1;
175 BOOL config_changed :1; /* True if -C used */
176 BOOL continue_more :1; /* Flag more addresses waiting */
178 BOOL daemon_listen :1; /* True if listening required */
179 BOOL debug_daemon :1; /* Debug the daemon process only */
180 BOOL deliver_firsttime :1; /* True for first delivery attempt */
181 BOOL deliver_force :1; /* TRUE if delivery was forced */
182 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
183 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
184 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
185 BOOL deliver_selectstring_regex :1; /* String is regex */
186 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
187 BOOL disable_callout_flush :1; /* Don't flush before callouts */
188 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
189 BOOL disable_logging :1; /* Disables log writing when TRUE */
191 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
193 #ifdef EXPERIMENTAL_DMARC
194 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
195 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
196 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
198 BOOL dont_deliver :1; /* TRUE for -N option */
199 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
201 BOOL enable_dollar_recipients :1; /* Make $recipients available */
202 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
204 BOOL filter_running :1; /* TRUE while running a filter */
206 BOOL header_rewritten :1; /* TRUE if header changed by router */
207 BOOL helo_verified :1; /* True if HELO verified */
208 BOOL helo_verify_failed :1; /* True if attempt failed */
209 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
210 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
212 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
213 BOOL is_inetd :1; /* True for inetd calls */
215 BOOL local_error_message :1; /* True if handling one of these */
216 BOOL log_testing_mode :1; /* TRUE in various testing modes */
218 #ifdef WITH_CONTENT_SCAN
219 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
221 BOOL no_multiline_responses :1; /* For broken clients */
223 BOOL parse_allow_group :1; /* Allow group syntax */
224 BOOL parse_found_group :1; /* In the middle of a group */
225 BOOL pipelining_enable :1; /* As it says */
226 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
227 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
230 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
231 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
232 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
233 BOOL queue_run_force :1; /* TRUE to force during queue run */
234 BOOL queue_run_local :1; /* Local deliveries only in queue run */
235 BOOL queue_running :1; /* TRUE for queue running process and */
236 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
238 BOOL really_exim :1; /* FALSE in utilities */
239 BOOL receive_call_bombout :1; /* Flag for crashing log */
240 BOOL recipients_discarded :1; /* By an ACL */
241 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
243 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
244 BOOL sender_address_forced :1; /* Set by -f */
245 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
246 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
247 BOOL sender_local :1; /* TRUE for local senders */
248 BOOL sender_name_forced :1; /* Set by -F */
249 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
250 BOOL smtp_authenticated :1; /* Sending client has authenticated */
251 #ifdef EXPERIMENTAL_PIPE_CONNECT
252 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
253 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
254 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
256 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
257 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
258 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
259 BOOL submission_mode :1; /* Can be forced from ACL */
260 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
261 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
262 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
263 BOOL system_filtering :1; /* TRUE when running system filter */
265 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
266 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
267 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
268 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
269 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
270 BOOL timestamps_utc :1; /* Use UTC for all times */
271 BOOL transport_filter_timed_out :1; /* True if it did */
272 BOOL trusted_caller :1; /* Caller is trusted */
273 BOOL trusted_config :1; /* Configuration file is trusted */
277 /* General global variables */
279 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
280 extern uschar *add_environment; /* List of environment variables to add */
281 extern header_line *acl_added_headers; /* Headers added by an ACL */
282 extern tree_node *acl_anchor; /* Tree of named ACLs */
283 extern uschar *acl_arg[9]; /* Argument to ACL call */
284 extern int acl_narg; /* Number of arguments to ACL call */
285 extern int acl_level; /* Nesting depth and debug indent */
286 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
287 #ifdef WITH_CONTENT_SCAN
288 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
290 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
291 extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
292 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
293 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
294 extern uschar *acl_smtp_data; /* ACL run after DATA received */
296 extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
297 const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
300 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
302 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
303 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
304 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
305 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
306 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
307 #ifdef WITH_CONTENT_SCAN
308 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
310 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
311 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
312 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
313 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
314 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
315 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
316 extern tree_node *acl_var_c; /* ACL connection variables */
317 extern tree_node *acl_var_m; /* ACL message variables */
318 extern uschar *acl_verify_message; /* User message for verify failure */
319 extern string_item *acl_warn_logged; /* Logged lines */
320 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
321 extern uschar *acl_wherenames[]; /* Names for messages */
322 extern address_item *addr_duplicate; /* Duplicate address list */
323 extern address_item address_defaults; /* Default data for address item */
324 extern uschar *address_file; /* Name of file when delivering to one */
325 extern uschar *address_pipe; /* Pipe command when delivering to one */
326 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
327 extern int addresslist_count; /* Number defined */
328 extern gid_t *admin_groups; /* List of admin groups */
329 extern BOOL allow_domain_literals; /* As it says */
330 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
331 #ifdef EXPERIMENTAL_ARC
332 struct arc_set *arc_received; /* highest ARC instance evaluation struct */
333 extern int arc_received_instance; /* highest ARC instance number in headers */
334 extern int arc_oldest_pass; /* lowest passing instance number in headers */
335 extern const uschar *arc_state; /* verification state */
336 extern const uschar *arc_state_reason;
338 extern BOOL allow_utf8_domains; /* For experimenting */
339 extern uschar *authenticated_fail_id; /* ID that failed authentication */
340 extern uschar *authenticated_id; /* ID that was authenticated */
341 extern uschar *authenticated_sender; /* From AUTH on MAIL */
342 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
343 extern uschar *auth_advertise_hosts; /* Only advertise to these */
344 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
345 extern auth_instance *auths; /* Chain of instantiated auths */
346 extern auth_instance auth_defaults; /* Default values */
347 extern uschar *auth_defer_msg; /* Error message for log */
348 extern uschar *auth_defer_user_msg; /* Error message for user */
349 extern uschar *auth_vars[]; /* $authn variables */
350 extern int auto_thaw; /* Auto-thaw interval */
351 #ifdef WITH_CONTENT_SCAN
352 extern int av_failed; /* TRUE if the AV process failed */
353 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
356 extern uschar *base62_chars; /* Table of base-62 characters */
357 extern uschar *bi_command; /* Command for -bi option */
358 extern uschar *big_buffer; /* Used for various temp things */
359 extern int big_buffer_size; /* Current size (can expand) */
360 #ifdef EXPERIMENTAL_BRIGHTMAIL
361 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
362 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
363 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
364 extern uschar *bmi_config_file; /* Brightmail config file */
365 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
366 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
367 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
369 extern int bsmtp_transaction_linecount; /* Start of last transaction */
370 extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
371 extern uschar *bounce_message_file; /* Template file */
372 extern uschar *bounce_message_text; /* One-liner */
373 extern uschar *bounce_recipient; /* When writing an errmsg */
374 extern BOOL bounce_return_body; /* Include body in returned message */
375 extern int bounce_return_linesize_limit; /* Max line length in return */
376 extern BOOL bounce_return_message; /* Include message in bounce */
377 extern int bounce_return_size_limit; /* Max amount to return */
378 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
380 extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
381 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
382 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
383 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
384 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
385 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
386 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
387 extern int check_log_inodes; /* Minimum for message acceptance */
388 extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
389 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
390 extern int check_spool_inodes; /* Minimum for message acceptance */
391 extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
392 extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
393 extern unsigned chunking_datasize;
394 extern unsigned chunking_data_left;
395 extern chunking_state_t chunking_state;
396 extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
397 extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
398 extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
399 extern int clmacro_count; /* Number of command line macros */
400 extern uschar *clmacros[]; /* Copy of them, for re-exec */
401 extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
402 extern int connection_max_messages;/* Max down one SMTP connection */
403 extern FILE *config_file; /* Configuration file */
404 extern const uschar *config_filename; /* Configuration file name */
405 extern gid_t config_gid; /* Additional group owner */
406 extern int config_lineno; /* Line number */
407 extern uschar *config_main_filelist; /* List of possible config files */
408 extern uschar *config_main_filename; /* File name actually used */
409 extern uschar *config_main_directory; /* Directory where the main config file was found */
410 extern uid_t config_uid; /* Additional owner */
411 extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
412 extern uschar *continue_hostname; /* Host for continued delivery */
413 extern uschar *continue_host_address; /* IP address for ditto */
414 extern int continue_sequence; /* Sequence num for continued delivery */
415 extern uschar *continue_transport; /* Transport for continued delivery */
417 extern uschar *csa_status; /* Client SMTP Authorization result */
420 unsigned callout_hold_only:1; /* Conn is only for verify callout */
421 unsigned delivery:1; /* When to attempt */
422 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
423 unsigned is_tls:1; /* Conn has TLS active */
424 client_conn_ctx cctx; /* Open connection */
425 int nrcpt; /* Count of addresses */
426 uschar * transport; /* Name of transport */
427 uschar * interface; /* (address of) */
428 uschar * snd_ip; /* sending_ip_address */
429 int snd_port; /* sending_port */
430 unsigned peer_options; /* smtp_peer_options */
431 host_item host; /* Host used */
432 address_item addr; /* (Chain of) addresses */
434 extern cut_t cutthrough; /* Deliver-concurrently */
436 extern uschar *daemon_smtp_port; /* Can be a list of ports */
437 extern int daemon_startup_retries; /* Number of times to retry */
438 extern int daemon_startup_sleep; /* Sleep between retries */
440 #ifdef EXPERIMENTAL_DCC
441 extern BOOL dcc_direct_add_header; /* directly add header */
442 extern uschar *dcc_header; /* dcc header */
443 extern uschar *dcc_result; /* dcc result */
444 extern uschar *dccifd_address; /* address of the dccifd daemon */
445 extern uschar *dccifd_options; /* options for the dccifd daemon */
448 extern int debug_fd; /* The fd for debug_file */
449 extern FILE *debug_file; /* Where to write debugging info */
450 extern int debug_notall[]; /* Debug options excluded from +all */
451 extern bit_table debug_options[]; /* Table of debug options */
452 extern int debug_options_count; /* Size of table */
453 extern BOOL debug_store; /* Do extra checks on store_reset */
454 extern int delay_warning[]; /* Times between warnings */
455 extern uschar *delay_warning_condition; /* Condition string for warnings */
456 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
458 extern uschar *deliver_address_data; /* Arbitrary data for an address */
459 extern int deliver_datafile; /* FD for data part of message */
460 extern const uschar *deliver_domain; /* The local domain for delivery */
461 extern uschar *deliver_domain_data; /* From domain lookup */
462 extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
463 extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
464 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
465 extern time_t deliver_frozen_at; /* Time of freezing */
466 extern uschar *deliver_home; /* Home directory for pipes */
467 extern const uschar *deliver_host; /* (First) host for routed local deliveries */
468 /* Remote host for filter */
469 extern const uschar *deliver_host_address; /* Address for remote delivery filter */
470 extern int deliver_host_port; /* Address for remote delivery filter */
471 extern uschar *deliver_in_buffer; /* Buffer for copying file */
472 extern ino_t deliver_inode; /* Inode for appendfile */
473 extern uschar *deliver_localpart; /* The local part for delivery */
474 extern uschar *deliver_localpart_data; /* From local part lookup */
475 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
476 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
477 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
478 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
479 extern uschar *deliver_out_buffer; /* Buffer for copying file */
480 extern int deliver_queue_load_max; /* Different value for queue running */
481 extern address_item *deliver_recipients; /* Current set of addresses */
482 extern uschar *deliver_selectstring; /* For selecting by recipient */
483 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
484 #ifdef ENABLE_DISABLE_FSYNC
485 extern BOOL disable_fsync; /* Not for normal use */
487 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
490 extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
491 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
492 extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
493 extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
494 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
495 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
496 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
497 extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
498 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
499 extern uschar *dkim_verify_status; /* result for this signature */
500 extern uschar *dkim_verify_reason; /* result for this signature */
502 #ifdef EXPERIMENTAL_DMARC
503 extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
504 extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
505 extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
506 extern uschar *dmarc_status; /* Expansion variable, one word value */
507 extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
508 extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
509 extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
512 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
513 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
514 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
515 extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
516 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
518 extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
520 extern int dns_retrans; /* Retransmission time setting */
521 extern int dns_retry; /* Number of retries */
522 extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
523 extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
524 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
525 extern uschar *dnslist_domain; /* DNS (black) list domain */
526 extern uschar *dnslist_matched; /* DNS (black) list matched key */
527 extern uschar *dnslist_text; /* DNS (black) list text message */
528 extern uschar *dnslist_value; /* DNS (black) list IP address */
529 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
530 extern int domainlist_count; /* Number defined */
532 /* This option is now a no-opt, retained for compatibility */
533 extern BOOL drop_cr; /* For broken local MUAs */
535 extern uschar *dsn_from; /* From: string for DSNs */
537 extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
538 extern int errno_quota; /* Quota errno in this OS */
539 extern int error_handling; /* Error handling style */
540 extern uschar *errors_copy; /* For taking copies of errors */
541 extern uschar *errors_reply_to; /* Reply-to for error messages */
542 extern int errors_sender_rc; /* Return after message to sender*/
544 #ifndef DISABLE_EVENT
545 extern uschar *event_action; /* expansion for delivery events */
546 extern uschar *event_data; /* event data */
547 extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
548 extern const uschar *event_name; /* event classification */
551 extern gid_t exim_gid; /* To be used with exim_uid */
552 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
553 extern uschar *exim_path; /* Path to exec exim */
554 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
555 extern uid_t exim_uid; /* Non-root uid for exim */
556 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
557 extern int expand_level; /* Nesting depth; indent for debug */
558 extern int expand_forbid; /* RDO flags for forbidding things */
559 extern int expand_nlength[]; /* Lengths of numbered strings */
560 extern int expand_nmax; /* Max numerical value */
561 extern uschar *expand_nstring[]; /* Numbered strings */
562 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
563 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
565 extern int fake_response; /* Fake FAIL or DEFER response to data */
566 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
567 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
568 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
569 extern int filter_test; /* Filter test type */
570 extern uschar *filter_test_sfile; /* System filter test file */
571 extern uschar *filter_test_ufile; /* User filter test file */
572 extern uschar *filter_thisaddress; /* For address looping */
573 extern int finduser_retries; /* Retry count for getpwnam() */
574 extern uid_t fixed_never_users[]; /* Can't be overridden */
575 extern uschar *freeze_tell; /* Message on (some) freezings */
576 extern uschar *freeze_tell_config; /* The configured setting */
577 extern uschar *fudged_queue_times; /* For use in test harness */
579 extern uschar *gecos_name; /* To be expanded when pattern matches */
580 extern uschar *gecos_pattern; /* Pattern to match */
581 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
583 extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
584 extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
585 extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
586 extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
587 extern int header_insert_maxlen; /* Max for inserting headers */
588 extern int header_maxsize; /* Max total length for header */
589 extern int header_line_maxsize; /* Max for an individual line */
590 extern header_name header_names[]; /* Table of header names */
591 extern int header_names_size; /* Number of entries */
592 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
593 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
594 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
595 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
596 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
597 extern const uschar *hex_digits; /* Used in several places */
598 extern uschar *hold_domains; /* Hold up deliveries to these */
599 extern uschar *host_data; /* Obtained from lookup in ACL */
600 extern uschar *host_lookup; /* For which IP addresses are always looked up */
601 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
602 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
603 extern uschar *host_lookup_order; /* Order of host lookup types */
604 extern uschar *host_lookup_msg; /* Text for why it failed */
605 extern int host_number; /* For sharing spools */
606 extern uschar *host_number_string; /* For expanding */
607 extern uschar *host_reject_connection; /* Reject these hosts */
608 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
609 extern int hostlist_count; /* Number defined */
610 extern uschar *hosts_connection_nolog; /* Limits the logging option */
611 extern uschar *hosts_treat_as_local; /* For routing */
613 extern int ignore_bounce_errors_after; /* Keep them for this time. */
614 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
615 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
616 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
617 extern uschar *initial_cwd; /* The directory we where in at startup */
618 extern uschar *iterate_item; /* Item from iterate list */
620 extern int journal_fd; /* Fd for journal file */
622 extern uschar *keep_environment; /* Whitelist for environment variables */
623 extern int keep_malformed; /* Time to keep malformed messages */
625 extern uschar *eldap_dn; /* Where LDAP DNs are left */
626 extern int load_average; /* Most recently read load average */
627 extern BOOL local_from_check; /* For adding Sender: (global value) */
628 extern uschar *local_from_prefix; /* Permitted prefixes */
629 extern uschar *local_from_suffix; /* Permitted suffixes */
630 extern uschar *local_interfaces; /* For forcing specific interfaces */
631 #ifdef HAVE_LOCAL_SCAN
632 extern uschar *local_scan_data; /* Text returned by local_scan() */
633 extern optionlist local_scan_options[];/* Option list for local_scan() */
634 extern int local_scan_options_count; /* Size of the list */
635 extern int local_scan_timeout; /* Timeout for local_scan() */
637 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
638 extern gid_t local_user_gid; /* As it says; may be set in routers */
639 extern uid_t local_user_uid; /* As it says; may be set in routers */
640 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
641 extern int localpartlist_count; /* Number defined */
642 extern uschar *log_buffer; /* For constructing log entries */
643 extern int log_default[]; /* Initialization list for log_selector */
644 extern uschar *log_file_path; /* If unset, use default */
645 extern int log_notall[]; /* Log options excluded from +all */
646 extern bit_table log_options[]; /* Table of options */
647 extern int log_options_count; /* Size of table */
648 extern int log_reject_target; /* Target log for ACL rejections */
649 extern unsigned int log_selector[]; /* Bit map of logging options */
650 extern uschar *log_selector_string; /* As supplied in the config */
651 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
652 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
653 extern uschar *login_sender_address; /* The actual sender address */
654 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
655 extern int lookup_list_count; /* Number of entries in the list */
656 extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
657 extern int lookup_open_max; /* Max lookup files to cache */
658 extern uschar *lookup_value; /* Value looked up from file */
660 extern macro_item *macros; /* Configuration macros */
661 extern macro_item *macros_user; /* Non-builtin configuration macros */
662 extern macro_item *mlast; /* Last item in macro list */
663 extern uschar *mailstore_basename; /* For mailstore deliveries */
664 #ifdef WITH_CONTENT_SCAN
665 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
667 extern int max_received_linelength;/* What it says */
668 extern int max_username_length; /* For systems with broken getpwnam() */
669 extern int message_age; /* In seconds */
670 extern uschar *message_body; /* Start of message body for filter */
671 extern uschar *message_body_end; /* End of message body for filter */
672 extern BOOL message_body_newlines; /* FALSE => remove newlines */
673 extern int message_body_size; /* Sic */
674 extern int message_body_visible; /* Amount visible in message_body */
675 extern int message_ended; /* State of message reading and how ended */
676 extern uschar *message_headers; /* When built */
677 extern uschar message_id_option[]; /* -E<message-id> for use as option */
678 extern uschar *message_id_external; /* External form of following */
679 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
680 extern uschar *message_id_text; /* Expanded to form message_id */
681 extern struct timeval message_id_tv; /* Time used to create last message_id */
682 extern int message_linecount; /* As it says */
683 extern BOOL message_logs; /* TRUE to write message logs */
684 extern int message_size; /* Size of message */
685 extern uschar *message_size_limit; /* As it says */
687 extern BOOL message_smtputf8; /* Internationalized mail handling */
688 extern int message_utf8_downconvert; /* convert from utf8 */
689 const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
691 extern uschar message_subdir[]; /* Subdirectory for messages */
692 extern uschar *message_reference; /* Reference for error messages */
694 /* MIME ACL expandables */
695 #ifdef WITH_CONTENT_SCAN
696 extern int mime_anomaly_level;
697 extern const uschar *mime_anomaly_text;
698 extern uschar *mime_boundary;
699 extern uschar *mime_charset;
700 extern uschar *mime_content_description;
701 extern uschar *mime_content_disposition;
702 extern uschar *mime_content_id;
703 extern unsigned int mime_content_size;
704 extern uschar *mime_content_transfer_encoding;
705 extern uschar *mime_content_type;
706 extern uschar *mime_decoded_filename;
707 extern uschar *mime_filename;
708 extern int mime_is_multipart;
709 extern int mime_is_coverletter;
710 extern int mime_is_rfc822;
711 extern int mime_part_count;
714 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
716 extern uid_t *never_users; /* List of uids never to be used */
717 #ifdef WITH_CONTENT_SCAN
720 extern const int on; /* For setsockopt */
721 extern const int off;
723 extern optionlist optionlist_auths[]; /* These option lists are made */
724 extern int optionlist_auths_size; /* global so that readconf can */
725 extern optionlist optionlist_routers[]; /* see them for printing out */
726 extern int optionlist_routers_size; /* the options. */
727 extern optionlist optionlist_transports[];
728 extern int optionlist_transports_size;
730 extern uid_t original_euid; /* Original effective uid */
731 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
732 extern uschar *originator_login; /* Login of same */
733 extern uschar *originator_name; /* Full name of same */
734 extern uid_t originator_uid; /* Uid of ditto */
735 extern uschar *override_local_interfaces; /* Value of -oX argument */
736 extern uschar *override_pid_file_path; /* Value of -oP argument */
738 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
739 extern uschar *pid_file_path; /* For writing daemon pids */
740 #ifdef EXPERIMENTAL_PIPE_CONNECT
741 extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
743 extern uschar *pipelining_advertise_hosts; /* As it says */
745 extern BOOL prdr_enable; /* As it says */
746 extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
748 extern BOOL preserve_message_logs; /* Save msglog files */
749 extern uschar *primary_hostname; /* Primary name of this computer */
750 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
751 extern uschar process_info[]; /* For SIGUSR1 output */
752 extern int process_info_len;
753 extern uschar *process_log_path; /* Alternate path */
754 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
756 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
757 extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
758 extern uschar *proxy_external_address; /* IP of remote interface of proxy */
759 extern int proxy_external_port; /* Port on remote interface of proxy */
760 extern uschar *proxy_local_address; /* IP of local interface of proxy */
761 extern int proxy_local_port; /* Port on local interface of proxy */
762 extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
765 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
766 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
767 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
769 extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
770 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
771 extern uschar *queue_domains; /* Queue these domains */
772 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
773 /* immediate children */
774 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
775 extern int queue_run_pipe; /* Pipe for synchronizing */
776 extern int queue_interval; /* Queue running interval */
777 extern uschar *queue_name; /* Name of queue, if nondefault spooling */
778 extern BOOL queue_only; /* TRUE to disable immediate delivery */
779 extern int queue_only_load; /* Max load before auto-queue */
780 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
781 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
782 extern BOOL queue_only_override; /* Allow override from command line */
783 extern BOOL queue_run_in_order; /* As opposed to random */
784 extern uschar *queue_run_max; /* Max queue runners */
785 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
787 extern unsigned int random_seed; /* Seed for random numbers */
788 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
789 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
790 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
791 extern uschar *raw_active_hostname; /* Pre-expansion */
792 extern uschar *raw_sender; /* Before rewriting */
793 extern uschar **raw_recipients; /* Before rewriting */
794 extern int raw_recipients_count;
795 extern int rcpt_count; /* Count of RCPT commands in a message */
796 extern int rcpt_fail_count; /* Those that got 5xx */
797 extern int rcpt_defer_count; /* Those that got 4xx */
798 extern gid_t real_gid; /* Real gid */
799 extern uid_t real_uid; /* Real user running program */
800 extern int receive_linecount; /* Mainly for BSMTP errors */
801 extern int receive_messagecount; /* Mainly for BSMTP errors */
802 extern int receive_timeout; /* For non-SMTP acceptance */
803 extern int received_count; /* Count of Received: headers */
804 extern uschar *received_for; /* For "for" field */
805 extern uschar *received_header_text; /* Definition of Received: header */
806 extern int received_headers_max; /* Max count of Received: headers */
807 extern struct timeval received_time; /* Time the message was received */
808 extern struct timeval received_time_taken; /* Interval the message took to be received */
809 extern uschar *recipient_data; /* lookup data for recipients */
810 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
811 extern uschar *recipient_verify_failure; /* What went wrong */
812 extern int recipients_list_max; /* Maximum number fitting in list */
813 extern int recipients_max; /* Max permitted */
814 extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
815 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
816 extern const pcre *regex_check_dns_names; /* For DNS name checking */
817 extern const pcre *regex_From; /* For recognizing "From_" lines */
818 extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
819 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
820 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
821 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
822 #ifdef EXPERIMENTAL_PIPE_CONNECT
823 extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
825 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
826 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
827 extern uschar *regex_vars[]; /* $regexN variables */
828 #ifdef WHITELIST_D_MACROS
829 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
831 #ifdef WITH_CONTENT_SCAN
832 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
834 extern int remote_delivery_count; /* Number of remote addresses */
835 extern int remote_max_parallel; /* Maximum parallel delivery */
836 extern uschar *remote_sort_domains; /* Remote domain sorting order */
837 extern retry_config *retries; /* Chain of retry config information */
838 extern int retry_data_expire; /* When to expire retry data */
839 extern int retry_interval_max; /* Absolute maximum */
840 extern int retry_maximum_timeout; /* The maximum timeout */
841 extern uschar *return_path; /* Return path for a message */
842 extern BOOL return_path_remove; /* Remove return-path headers */
843 extern int rewrite_existflags; /* Indicate which headers have rewrites */
844 extern uschar *rfc1413_hosts; /* RFC hosts */
845 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
846 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
847 extern uid_t root_gid; /* The gid for root */
848 extern uid_t root_uid; /* The uid for root */
849 extern router_info routers_available[];/* Vector of available routers */
850 extern router_instance *routers; /* Chain of instantiated routers */
851 extern router_instance router_defaults;/* Default values */
852 extern uschar *router_name; /* Name of router last started */
853 extern ip_address_item *running_interfaces; /* Host's running interfaces */
854 extern uschar *running_status; /* Flag string for testing */
855 extern int runrc; /* rc from ${run} */
857 extern uschar *search_error_message; /* Details of lookup problem */
858 extern uschar *self_hostname; /* Self host after routing->directors */
859 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
860 extern uschar *sender_address_data; /* address_data from sender verify */
861 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
862 extern uschar *sender_data; /* lookup result for senders */
863 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
864 extern uschar *sender_fullhost; /* Sender host name + address */
865 extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
866 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
867 extern uschar **sender_host_aliases; /* Points to list of alias names */
868 extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
869 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
870 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
871 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
872 extern uschar *sender_rate; /* Sender rate computed by ACL */
873 extern uschar *sender_rate_limit; /* Configured rate limit */
874 extern uschar *sender_rate_period; /* Configured smoothing period */
875 extern uschar *sender_rcvhost; /* Host data for Received: */
876 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
877 extern uschar *sender_verify_failure; /* What went wrong */
878 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
879 extern address_item *sender_verified_failed; /* The one that caused denial */
880 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
881 extern int sending_port; /* Port of outgoing interface */
882 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
883 extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
884 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
885 extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
886 extern int smtp_accept_count; /* Count of connections */
887 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
888 extern int smtp_accept_max; /* Max SMTP connections */
889 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
890 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
891 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
892 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
893 extern int smtp_accept_queue; /* Queue after so many connections */
894 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
895 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
896 extern uschar *smtp_active_hostname; /* Hostname for this message */
897 extern uschar *smtp_banner; /* Banner string (to be expanded) */
898 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
899 extern int smtp_ch_index; /* Index in smtp_connection_had */
900 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
901 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
902 extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
903 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
904 extern int smtp_connect_backlog; /* Max backlog permitted */
905 extern double smtp_delay_mail; /* Current MAIL delay */
906 extern double smtp_delay_rcpt; /* Current RCPT delay */
907 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
908 extern uschar *smtp_etrn_command; /* Command to run */
909 extern BOOL smtp_etrn_serialize; /* Only one at once */
910 extern FILE *smtp_in; /* Incoming SMTP input file */
911 extern int smtp_load_reserve; /* Only from reserved if load > this */
912 extern int smtp_mailcmd_count; /* Count of MAIL commands */
913 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
914 extern int smtp_max_unknown_commands; /* As it says */
915 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
916 extern FILE *smtp_out; /* Incoming SMTP output file */
917 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
918 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
919 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
920 extern uschar *smtp_read_error; /* Message for SMTP input error */
921 extern int smtp_receive_timeout; /* Applies to each received line */
922 extern uschar *smtp_receive_timeout_s; /* ... expandable version */
923 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
924 extern BOOL smtp_return_error_details; /* TRUE to return full info */
925 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
926 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
927 extern int smtp_rlm_limit; /* Max delay */
928 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
929 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
930 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
931 extern int smtp_rlr_limit; /* Max delay */
932 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
933 extern unsigned smtp_peer_options; /* Global flags for passed connections */
934 extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
936 extern uschar *smtputf8_advertise_hosts; /* ingress control */
939 #ifdef WITH_CONTENT_SCAN
940 extern uschar *spamd_address; /* address for the spamassassin daemon */
941 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
942 extern uschar *spam_report; /* the spamd report (multiline) */
943 extern uschar *spam_action; /* the spamd recommended-action */
944 extern uschar *spam_score; /* the spam score (float) */
945 extern uschar *spam_score_int; /* spam_score * 10 (int) */
948 extern uschar *spf_guess; /* spf best-guess record */
949 extern uschar *spf_header_comment; /* spf header comment */
950 extern uschar *spf_received; /* Received-SPF: header */
951 extern uschar *spf_result; /* spf result in string form */
952 extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
953 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
955 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
956 extern FILE *spool_data_file; /* handle for -D file */
957 extern uschar *spool_directory; /* Name of spool directory */
958 extern BOOL spool_wireformat; /* can write wireformat -D files */
959 #ifdef EXPERIMENTAL_SRS
960 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
961 extern uschar *srs_db_address; /* SRS db address */
962 extern uschar *srs_db_key; /* SRS db key */
963 extern int srs_hashlength; /* SRS hash length */
964 extern int srs_hashmin; /* SRS minimum hash length */
965 extern int srs_maxage; /* SRS max age */
966 extern uschar *srs_orig_sender; /* SRS original sender */
967 extern uschar *srs_orig_recipient; /* SRS original recipient */
968 extern uschar *srs_recipient; /* SRS recipient */
969 extern uschar *srs_secrets; /* SRS secrets list */
970 extern uschar *srs_status; /* SRS staus */
971 extern BOOL srs_usehash; /* SRS use hash flag */
972 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
974 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
975 extern int string_datestamp_offset;/* After insertion by string_format */
976 extern int string_datestamp_length;/* After insertion by string_format */
977 extern int string_datestamp_type; /* After insertion by string_format */
978 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
979 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
980 extern uschar *submission_domain; /* Domain for submission mode */
981 extern uschar *submission_name; /* User name set from ACL */
982 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
983 extern int syslog_facility; /* As defined by Syslog.h */
984 extern BOOL syslog_pid; /* TRUE if PID on syslogs */
985 extern uschar *syslog_processname; /* 'ident' param to openlog() */
986 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
987 extern uschar *system_filter; /* Name of system filter file */
989 extern uschar *system_filter_directory_transport; /* Transports for the */
990 extern uschar *system_filter_file_transport; /* system filter */
991 extern uschar *system_filter_pipe_transport;
992 extern uschar *system_filter_reply_transport;
994 extern gid_t system_filter_gid; /* Gid for running system filter */
995 extern BOOL system_filter_gid_set; /* TRUE if gid set */
996 extern uid_t system_filter_uid; /* Uid for running system filter */
997 extern BOOL system_filter_uid_set; /* TRUE if uid set */
999 extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
1000 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
1001 extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
1002 #ifdef USE_TCP_WRAPPERS
1003 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1005 extern int test_harness_load_avg; /* For use when testing */
1006 extern int thismessage_size_limit; /* Limit for this message */
1007 extern int timeout_frozen_after; /* Max time to keep frozen messages */
1009 extern uschar *transport_name; /* Name of transport last started */
1010 extern int transport_count; /* Count of bytes transported */
1011 extern int transport_newlines; /* Accurate count of number of newline chars transported */
1012 extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
1013 extern int transport_filter_timeout; /* Timeout for same */
1015 extern transport_info transports_available[]; /* Vector of available transports */
1016 extern transport_instance *transports; /* Chain of instantiated transports */
1017 extern transport_instance transport_defaults; /* Default values */
1019 extern int transport_write_timeout;/* Set to time out individual writes */
1021 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1022 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1023 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1024 extern tree_node *tree_unusable; /* Tree of unusable addresses */
1026 extern gid_t *trusted_groups; /* List of trusted groups */
1027 extern uid_t *trusted_users; /* List of trusted users */
1028 extern uschar *timezone_string; /* Required timezone setting */
1030 extern uschar *unknown_login; /* To use when login id unknown */
1031 extern uschar *unknown_username; /* Ditto */
1032 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1033 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1034 extern uschar *uucp_from_sender; /* For building the sender */
1036 extern uschar *warn_message_file; /* Template for warning messages */
1037 extern uschar *warnmsg_delay; /* String form of delay time */
1038 extern uschar *warnmsg_recipients; /* Recipients of warning message */
1039 extern BOOL write_rejectlog; /* Control of reject logging */
1041 extern uschar *verify_mode; /* Running a router in verify mode */
1042 extern uschar *version_copyright; /* Copyright notice */
1043 extern uschar *version_date; /* Date of compilation */
1044 extern uschar *version_cnumber; /* Compile number */
1045 extern uschar *version_string; /* Version string */
1047 extern int warning_count; /* Delay warnings sent for this msg */
1049 /* End of globals.h */
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