1 /*************************************************
2 * Exim - an Internet mail transport agent *
3 *************************************************/
5 /* Copyright (c) University of Cambridge 1995 - 2012 */
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 */
34 extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
38 extern uschar *ibase_servers;
42 extern uschar *eldap_ca_cert_dir; /* Directory with CA certificates */
43 extern uschar *eldap_ca_cert_file; /* CA certificate file */
44 extern uschar *eldap_cert_file; /* Certificate file */
45 extern uschar *eldap_cert_key; /* Certificate key file */
46 extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
47 extern uschar *eldap_default_servers; /* List of default servers */
48 extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
49 extern BOOL eldap_start_tls; /* Use STARTTLS */
50 extern int eldap_version; /* LDAP version */
54 extern uschar *mysql_servers; /* List of servers and connect info */
58 extern uschar *oracle_servers; /* List of servers and connect info */
62 extern uschar *pgsql_servers; /* List of servers and connect info */
66 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
69 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
70 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
73 /* These variables are outside the #ifdef because it keeps the code less
74 cluttered in several places (e.g. during logging) if we can always refer to
75 them. Also, the tls_ variables are now always visible. */
77 extern int tls_active; /* fd/socket when in a TLS session */
78 extern int tls_bits; /* bits used in TLS session */
79 extern BOOL tls_certificate_verified; /* Client certificate verified */
80 extern uschar *tls_cipher; /* Cipher used */
81 extern BOOL tls_on_connect; /* For older MTAs that don't STARTTLS */
82 extern uschar *tls_on_connect_ports; /* Ports always tls-on-connect */
83 extern uschar *tls_peerdn; /* DN from peer */
86 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
87 extern uschar *gnutls_require_mac; /* So some can be avoided */
88 extern uschar *gnutls_require_kx; /* So some can be avoided */
89 extern uschar *gnutls_require_proto; /* So some can be avoided */
90 extern uschar *openssl_options; /* OpenSSL compatibility options */
91 extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
92 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
93 extern uschar *tls_certificate; /* Certificate file */
94 extern uschar *tls_channelbinding_b64; /* string of base64 channel binding */
95 extern uschar *tls_crl; /* CRL File */
96 extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
97 extern uschar *tls_dhparam; /* DH param file */
98 #if defined(EXPERIMENTAL_OCSP) && !defined(USE_GNUTLS)
99 extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
101 extern BOOL tls_offered; /* Server offered TLS */
102 extern uschar *tls_privatekey; /* Private key file */
103 extern BOOL tls_remember_esmtp; /* For YAEB */
104 extern uschar *tls_require_ciphers; /* So some can be avoided */
105 extern uschar *tls_sni; /* Server Name Indication */
106 extern uschar *tls_try_verify_hosts; /* Optional client verification */
107 extern uschar *tls_verify_certificates;/* Path for certificates to check */
108 extern uschar *tls_verify_hosts; /* Mandatory client verification */
112 /* Input-reading functions for messages, so we can use special ones for
115 extern int (*receive_getc)(void);
116 extern int (*receive_ungetc)(int);
117 extern int (*receive_feof)(void);
118 extern int (*receive_ferror)(void);
119 extern BOOL (*receive_smtp_buffered)(void);
122 /* For clearing, saving, restoring address expansion variables. We have to have
123 the size of this vector set explicitly, because it is referenced from more than
126 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
128 /* General global variables */
130 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
131 extern header_line *acl_added_headers; /* Headers added by an ACL */
132 extern tree_node *acl_anchor; /* Tree of named ACLs */
133 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
134 #ifdef WITH_CONTENT_SCAN
135 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
137 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
138 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
139 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
140 extern uschar *acl_smtp_data; /* ACL run after DATA received */
142 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
144 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
145 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
146 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
147 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
148 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
149 #ifdef WITH_CONTENT_SCAN
150 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
152 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
153 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
154 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
155 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
156 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
157 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
158 extern BOOL acl_temp_details; /* TRUE to give details for 4xx error */
159 extern tree_node *acl_var_c; /* ACL connection variables */
160 extern tree_node *acl_var_m; /* ACL messsage variables */
161 extern uschar *acl_verify_message; /* User message for verify failure */
162 extern string_item *acl_warn_logged; /* Logged lines */
163 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
164 extern uschar *acl_wherenames[]; /* Names for messages */
165 extern BOOL active_local_from_check;/* For adding Sender: (switchable) */
166 extern BOOL active_local_sender_retain; /* For keeping Sender: (switchable) */
167 extern address_item *addr_duplicate; /* Duplicate address list */
168 extern address_item address_defaults; /* Default data for address item */
169 extern uschar *address_file; /* Name of file when delivering to one */
170 extern uschar *address_pipe; /* Pipe command when delivering to one */
171 extern BOOL address_test_mode; /* True for -bt */
172 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
173 extern int addresslist_count; /* Number defined */
174 extern gid_t *admin_groups; /* List of admin groups */
175 extern BOOL admin_user; /* True if caller can do admin */
176 extern BOOL allow_auth_unadvertised;/* As it says */
177 extern BOOL allow_domain_literals; /* As it says */
178 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
179 extern BOOL allow_unqualified_recipient; /* As it says */
180 extern BOOL allow_unqualified_sender; /* Ditto */
181 extern BOOL allow_utf8_domains; /* For experimenting */
182 extern uschar *authenticated_id; /* ID that was authenticated */
183 extern uschar *authenticated_sender; /* From AUTH on MAIL */
184 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
185 extern uschar *auth_advertise_hosts; /* Only advertise to these */
186 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
187 extern auth_instance *auths; /* Chain of instantiated auths */
188 extern auth_instance auth_defaults; /* Default values */
189 extern uschar *auth_defer_msg; /* Error message for log */
190 extern uschar *auth_defer_user_msg; /* Error message for user */
191 extern uschar *auth_vars[]; /* $authn variables */
192 extern int auto_thaw; /* Auto-thaw interval */
193 #ifdef WITH_CONTENT_SCAN
194 extern BOOL av_failed; /* TRUE if the AV process failed */
195 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
198 extern BOOL background_daemon; /* Set FALSE to keep in foreground */
199 extern uschar *base62_chars; /* Table of base-62 characters */
200 extern uschar *bi_command; /* Command for -bi option */
201 extern uschar *big_buffer; /* Used for various temp things */
202 extern int big_buffer_size; /* Current size (can expand) */
203 #ifdef EXPERIMENTAL_BRIGHTMAIL
204 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
205 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
206 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
207 extern uschar *bmi_config_file; /* Brightmail config file */
208 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
209 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
210 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
212 extern uschar *bounce_message_file; /* Template file */
213 extern uschar *bounce_message_text; /* One-liner */
214 extern uschar *bounce_recipient; /* When writing an errmsg */
215 extern BOOL bounce_return_body; /* Include body in returned message */
216 extern BOOL bounce_return_message; /* Include message in bounce */
217 extern int bounce_return_size_limit; /* Max amount to return */
218 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
219 extern int bsmtp_transaction_linecount; /* Start of last transaction */
221 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
222 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
223 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
224 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
225 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
226 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
227 extern int check_log_inodes; /* Minimum for message acceptance */
228 extern int check_log_space; /* Minimum for message acceptance */
229 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
230 extern int check_spool_inodes; /* Minimum for message acceptance */
231 extern int check_spool_space; /* Minimum for message acceptance */
232 extern int clmacro_count; /* Number of command line macros */
233 extern uschar *clmacros[]; /* Copy of them, for re-exec */
234 extern int connection_max_messages;/* Max down one SMTP connection */
235 extern BOOL config_changed; /* True if -C used */
236 extern FILE *config_file; /* Configuration file */
237 extern uschar *config_filename; /* Configuration file name */
238 #ifdef CONFIGURE_GROUP
239 extern gid_t config_gid; /* Additional group owner */
241 extern int config_lineno; /* Line number */
242 extern uschar *config_main_filelist; /* List of possible config files */
243 extern uschar *config_main_filename; /* File name actually used */
244 #ifdef CONFIGURE_OWNER
245 extern uid_t config_uid; /* Additional owner */
247 extern uschar *continue_hostname; /* Host for continued delivery */
248 extern uschar *continue_host_address; /* IP address for ditto */
249 extern BOOL continue_more; /* Flag more addresses waiting */
250 extern int continue_sequence; /* Sequence num for continued delivery */
251 extern uschar *continue_transport; /* Transport for continued delivery */
253 extern uschar *csa_status; /* Client SMTP Authorization result */
255 extern BOOL daemon_listen; /* True if listening required */
256 extern uschar *daemon_smtp_port; /* Can be a list of ports */
257 extern int daemon_startup_retries; /* Number of times to retry */
258 extern int daemon_startup_sleep; /* Sleep between retries */
260 #ifdef EXPERIMENTAL_DCC
261 extern BOOL dcc_direct_add_header; /* directly add header */
262 extern uschar *dcc_header; /* dcc header */
263 extern uschar *dcc_result; /* dcc result */
264 extern uschar *dccifd_address; /* address of the dccifd daemon */
265 extern uschar *dccifd_options; /* options for the dccifd daemon */
268 extern BOOL debug_daemon; /* Debug the daemon process only */
269 extern int debug_fd; /* The fd for debug_file */
270 extern FILE *debug_file; /* Where to write debugging info */
271 extern bit_table debug_options[]; /* Table of debug options */
272 extern int debug_options_count; /* Size of table */
273 extern int delay_warning[]; /* Times between warnings */
274 extern uschar *delay_warning_condition; /* Condition string for warnings */
275 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
277 extern uschar *deliver_address_data; /* Arbitrary data for an address */
278 extern int deliver_datafile; /* FD for data part of message */
279 extern uschar *deliver_domain; /* The local domain for delivery */
280 extern uschar *deliver_domain_data; /* From domain lookup */
281 extern uschar *deliver_domain_orig; /* The original local domain for delivery */
282 extern uschar *deliver_domain_parent; /* The parent domain for delivery */
283 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
284 extern BOOL deliver_firsttime; /* True for first delivery attempt */
285 extern BOOL deliver_force; /* TRUE if delivery was forced */
286 extern BOOL deliver_freeze; /* TRUE if delivery is frozen */
287 extern int deliver_frozen_at; /* Time of freezing */
288 extern uschar *deliver_home; /* Home directory for pipes */
289 extern uschar *deliver_host; /* (First) host for routed local deliveries */
290 /* Remote host for filter */
291 extern uschar *deliver_host_address; /* Address for remote delivery filter */
292 extern uschar *deliver_in_buffer; /* Buffer for copying file */
293 extern ino_t deliver_inode; /* Inode for appendfile */
294 extern uschar *deliver_localpart; /* The local part for delivery */
295 extern uschar *deliver_localpart_data; /* From local part lookup */
296 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
297 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
298 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
299 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
300 extern BOOL deliver_force_thaw; /* TRUE to force thaw in queue run */
301 extern BOOL deliver_manual_thaw; /* TRUE if manually thawed */
302 extern uschar *deliver_out_buffer; /* Buffer for copying file */
303 extern int deliver_queue_load_max; /* Different value for queue running */
304 extern address_item *deliver_recipients; /* Current set of addresses */
305 extern uschar *deliver_selectstring; /* For selecting by recipient */
306 extern BOOL deliver_selectstring_regex; /* String is regex */
307 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
308 extern BOOL deliver_selectstring_sender_regex; /* String is regex */
309 #ifdef WITH_OLD_DEMIME
310 extern int demime_errorlevel; /* Severity of MIME error */
311 extern int demime_ok; /* Nonzero if message has been demimed */
312 extern uschar *demime_reason; /* Reason for broken MIME container */
314 extern BOOL disable_callout_flush; /* Don't flush before callouts */
315 extern BOOL disable_delay_flush; /* Don't flush before "delay" in ACL */
316 #ifdef ENABLE_DISABLE_FSYNC
317 extern BOOL disable_fsync; /* Not for normal use */
319 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
320 extern BOOL disable_logging; /* Disables log writing when TRUE */
323 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
324 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
325 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
326 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
327 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
328 extern BOOL dkim_collect_input; /* Runtime flag that tracks wether SMTP input is fed to DKIM validation */
329 extern BOOL dkim_disable_verify; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
332 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
333 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
334 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
335 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
336 extern int dns_retrans; /* Retransmission time setting */
337 extern int dns_retry; /* Number of retries */
338 extern int dns_use_dnssec; /* When constructing DNS query, set DO flag */
339 extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
340 extern uschar *dnslist_domain; /* DNS (black) list domain */
341 extern uschar *dnslist_matched; /* DNS (black) list matched key */
342 extern uschar *dnslist_text; /* DNS (black) list text message */
343 extern uschar *dnslist_value; /* DNS (black) list IP address */
344 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
345 extern int domainlist_count; /* Number defined */
346 extern BOOL dont_deliver; /* TRUE for -N option */
347 extern BOOL dot_ends; /* TRUE if "." ends non-SMTP input */
349 /* This option is now a no-opt, retained for compatibility */
350 extern BOOL drop_cr; /* For broken local MUAs */
352 extern uschar *dsn_from; /* From: string for DSNs */
354 extern BOOL enable_dollar_recipients; /* Make $recipients available */
355 extern int envelope_to_remove; /* Remove envelope_to_headers */
356 extern int errno_quota; /* Quota errno in this OS */
357 extern int error_handling; /* Error handling style */
358 extern uschar *errors_copy; /* For taking copies of errors */
359 extern uschar *errors_reply_to; /* Reply-to for error messages */
360 extern int errors_sender_rc; /* Return after message to sender*/
361 extern gid_t exim_gid; /* To be used with exim_uid */
362 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
363 extern uschar *exim_path; /* Path to exec exim */
364 extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
365 extern uid_t exim_uid; /* Non-root uid for exim */
366 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
367 extern int expand_forbid; /* RDO flags for forbidding things */
368 extern int expand_nlength[]; /* Lengths of numbered strings */
369 extern int expand_nmax; /* Max numerical value */
370 extern uschar *expand_nstring[]; /* Numbered strings */
371 extern BOOL expand_string_forcedfail; /* TRUE if failure was "expected" */
372 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
373 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
375 extern int fake_response; /* Fake FAIL or DEFER response to data */
376 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
377 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
378 extern BOOL filter_running; /* TRUE while running a filter */
379 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
380 extern int filter_test; /* Filter test type */
381 extern uschar *filter_test_sfile; /* System filter test file */
382 extern uschar *filter_test_ufile; /* User filter test file */
383 extern uschar *filter_thisaddress; /* For address looping */
384 extern int finduser_retries; /* Retry count for getpwnam() */
385 extern uid_t fixed_never_users[]; /* Can't be overridden */
386 #ifdef WITH_OLD_DEMIME
387 extern uschar *found_extension; /* demime acl condition: file extension found */
389 extern uschar *freeze_tell; /* Message on (some) freezings */
390 extern uschar *freeze_tell_config; /* The configured setting */
391 extern uschar *fudged_queue_times; /* For use in test harness */
393 extern uschar *gecos_name; /* To be expanded when pattern matches */
394 extern uschar *gecos_pattern; /* Pattern to match */
395 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
397 extern int header_insert_maxlen; /* Max for inserting headers */
398 extern int header_maxsize; /* Max total length for header */
399 extern int header_line_maxsize; /* Max for an individual line */
400 extern header_name header_names[]; /* Table of header names */
401 extern int header_names_size; /* Number of entries */
402 extern BOOL header_rewritten; /* TRUE if header changed by router */
403 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
404 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
405 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
406 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
407 extern BOOL helo_verified; /* True if HELO verified */
408 extern BOOL helo_verify_failed; /* True if attempt failed */
409 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
410 extern const uschar *hex_digits; /* Used in several places */
411 extern uschar *hold_domains; /* Hold up deliveries to these */
412 extern BOOL host_find_failed_syntax;/* DNS syntax check failure */
413 extern BOOL host_checking_callout; /* TRUE if real callout wanted */
414 extern uschar *host_data; /* Obtained from lookup in ACL */
415 extern uschar *host_lookup; /* For which IP addresses are always looked up */
416 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
417 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
418 extern uschar *host_lookup_order; /* Order of host lookup types */
419 extern uschar *host_lookup_msg; /* Text for why it failed */
420 extern int host_number; /* For sharing spools */
421 extern uschar *host_number_string; /* For expanding */
422 extern uschar *host_reject_connection; /* Reject these hosts */
423 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
424 extern int hostlist_count; /* Number defined */
425 extern uschar *hosts_connection_nolog; /* Limits the logging option */
426 extern uschar *hosts_treat_as_local; /* For routing */
428 extern int ignore_bounce_errors_after; /* Keep them for this time. */
429 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
430 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
431 extern BOOL inetd_wait_mode; /* Whether running in inetd wait mode */
432 extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
433 extern BOOL is_inetd; /* True for inetd calls */
434 extern uschar *iterate_item; /* Item from iterate list */
436 extern int journal_fd; /* Fd for journal file */
438 extern int keep_malformed; /* Time to keep malformed messages */
440 extern uschar *eldap_dn; /* Where LDAP DNs are left */
441 extern int load_average; /* Most recently read load average */
442 extern BOOL local_error_message; /* True if handling one of these */
443 extern BOOL local_from_check; /* For adding Sender: (global value) */
444 extern uschar *local_from_prefix; /* Permitted prefixes */
445 extern uschar *local_from_suffix; /* Permitted suffixes */
446 extern uschar *local_interfaces; /* For forcing specific interfaces */
447 extern uschar *local_scan_data; /* Text returned by local_scan() */
448 extern optionlist local_scan_options[];/* Option list for local_scan() */
449 extern int local_scan_options_count; /* Size of the list */
450 extern int local_scan_timeout; /* Timeout for local_scan() */
451 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
452 extern gid_t local_user_gid; /* As it says; may be set in routers */
453 extern uid_t local_user_uid; /* As it says; may be set in routers */
454 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
455 extern int localpartlist_count; /* Number defined */
456 extern uschar *log_buffer; /* For constructing log entries */
457 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
458 extern uschar *log_file_path; /* If unset, use default */
459 extern bit_table log_options[]; /* Table of options */
460 extern int log_options_count; /* Size of table */
461 extern int log_reject_target; /* Target log for ACL rejections */
462 extern uschar *log_selector_string; /* As supplied in the config */
463 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
464 extern BOOL log_testing_mode; /* TRUE in various testing modes */
465 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
466 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
467 extern uschar *login_sender_address; /* The actual sender address */
468 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
469 extern int lookup_list_count; /* Number of entries in the list */
470 extern int lookup_open_max; /* Max lookup files to cache */
471 extern uschar *lookup_value; /* Value looked up from file */
473 extern macro_item *macros; /* Configuration macros */
474 extern uschar *mailstore_basename; /* For mailstore deliveries */
475 #ifdef WITH_CONTENT_SCAN
476 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
478 extern int max_received_linelength;/* What it says */
479 extern int max_username_length; /* For systems with broken getpwnam() */
480 extern int message_age; /* In seconds */
481 extern uschar *message_body; /* Start of message body for filter */
482 extern uschar *message_body_end; /* End of message body for filter */
483 extern BOOL message_body_newlines; /* FALSE => remove newlines */
484 extern int message_body_size; /* Sic */
485 extern int message_body_visible; /* Amount visible in message_body */
486 extern int message_ended; /* State of message reading and how ended */
487 extern uschar *message_headers; /* When built */
488 extern uschar message_id_option[]; /* -E<message-id> for use as option */
489 extern uschar *message_id_external; /* External form of following */
490 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
491 extern uschar *message_id_text; /* Expanded to form message_id */
492 extern struct timeval message_id_tv; /* Time used to create last message_id */
493 extern int message_linecount; /* As it says */
494 extern BOOL message_logs; /* TRUE to write message logs */
495 extern int message_size; /* Size of message */
496 extern uschar *message_size_limit; /* As it says */
497 extern uschar message_subdir[]; /* Subdirectory for messages */
498 extern uschar *message_reference; /* Reference for error messages */
500 /* MIME ACL expandables */
501 #ifdef WITH_CONTENT_SCAN
502 extern int mime_anomaly_level;
503 extern const uschar *mime_anomaly_text;
504 extern uschar *mime_boundary;
505 extern uschar *mime_charset;
506 extern uschar *mime_content_description;
507 extern uschar *mime_content_disposition;
508 extern uschar *mime_content_id;
509 extern unsigned int mime_content_size;
510 extern uschar *mime_content_transfer_encoding;
511 extern uschar *mime_content_type;
512 extern uschar *mime_decoded_filename;
513 extern uschar *mime_filename;
514 extern int mime_is_multipart;
515 extern int mime_is_coverletter;
516 extern int mime_is_rfc822;
517 extern int mime_part_count;
520 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
522 extern uid_t *never_users; /* List of uids never to be used */
523 #ifdef WITH_CONTENT_SCAN
524 extern BOOL no_mbox_unspool; /* don't unlink files in /scan directory */
526 extern BOOL no_multiline_responses; /* For broken clients */
528 extern optionlist optionlist_auths[]; /* These option lists are made */
529 extern int optionlist_auths_size; /* global so that readconf can */
530 extern optionlist optionlist_routers[]; /* see them for printing out */
531 extern int optionlist_routers_size; /* the options. */
532 extern optionlist optionlist_transports[];
533 extern int optionlist_transports_size;
535 extern uid_t original_euid; /* Original effective uid */
536 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
537 extern uschar *originator_login; /* Login of same */
538 extern uschar *originator_name; /* Full name of same */
539 extern uid_t originator_uid; /* Uid of ditto */
540 extern uschar *override_local_interfaces; /* Value of -oX argument */
541 extern uschar *override_pid_file_path; /* Value of -oP argument */
543 extern BOOL parse_allow_group; /* Allow group syntax */
544 extern BOOL parse_found_group; /* In the middle of a group */
545 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
546 extern uschar *pid_file_path; /* For writing daemon pids */
547 extern uschar *pipelining_advertise_hosts; /* As it says */
548 extern BOOL pipelining_enable; /* As it says */
549 extern BOOL preserve_message_logs; /* Save msglog files */
550 extern uschar *primary_hostname; /* Primary name of this computer */
551 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
552 extern uschar process_info[]; /* For SIGUSR1 output */
553 extern int process_info_len;
554 extern uschar *process_log_path; /* Alternate path */
555 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
556 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
557 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
558 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
560 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
561 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
562 extern BOOL queue_2stage; /* Run queue in 2-stage manner */
563 extern uschar *queue_domains; /* Queue these domains */
564 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
565 extern BOOL queue_run_first_delivery; /* If TRUE, first deliveries only */
566 extern BOOL queue_run_force; /* TRUE to force during queue run */
567 extern BOOL queue_run_local; /* Local deliveries only in queue run */
568 extern BOOL queue_running; /* TRUE for queue running process and */
569 /* immediate children */
570 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
571 extern int queue_run_pipe; /* Pipe for synchronizing */
572 extern int queue_interval; /* Queue running interval */
573 extern BOOL queue_only; /* TRUE to disable immediate delivery */
574 extern int queue_only_load; /* Max load before auto-queue */
575 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
576 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
577 extern BOOL queue_only_override; /* Allow override from command line */
578 extern BOOL queue_only_policy; /* ACL or local_scan wants queue_only */
579 extern BOOL queue_run_in_order; /* As opposed to random */
580 extern int queue_run_max; /* Max queue runners */
581 extern BOOL queue_smtp; /* Disable all immediate STMP (-odqs)*/
582 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
584 extern unsigned int random_seed; /* Seed for random numbers */
585 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
586 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
587 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
588 extern uschar *raw_active_hostname; /* Pre-expansion */
589 extern uschar *raw_sender; /* Before rewriting */
590 extern uschar **raw_recipients; /* Before rewriting */
591 extern int raw_recipients_count;
592 extern int rcpt_count; /* Count of RCPT commands in a message */
593 extern int rcpt_fail_count; /* Those that got 5xx */
594 extern int rcpt_defer_count; /* Those that got 4xx */
595 extern gid_t real_gid; /* Real gid */
596 extern uid_t real_uid; /* Real user running program */
597 extern BOOL really_exim; /* FALSE in utilities */
598 extern BOOL receive_call_bombout; /* Flag for crashing log */
599 extern int receive_linecount; /* Mainly for BSMTP errors */
600 extern int receive_messagecount; /* Mainly for BSMTP errors */
601 extern int receive_timeout; /* For non-SMTP acceptance */
602 extern int received_count; /* Count of Received: headers */
603 extern uschar *received_for; /* For "for" field */
604 extern uschar *received_header_text; /* Definition of Received: header */
605 extern int received_headers_max; /* Max count of Received: headers */
606 extern int received_time; /* Time the message was received */
607 extern uschar *recipient_data; /* lookup data for recipients */
608 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
609 extern uschar *recipient_verify_failure; /* What went wrong */
610 extern BOOL recipients_discarded; /* By an ACL */
611 extern int recipients_list_max; /* Maximum number fitting in list */
612 extern int recipients_max; /* Max permitted */
613 extern int recipients_max_reject; /* If TRUE, reject whole message */
614 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
615 extern const pcre *regex_check_dns_names; /* For DNS name checking */
616 extern const pcre *regex_From; /* For recognizing "From_" lines */
617 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
618 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
619 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
620 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
621 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
622 #ifdef WHITELIST_D_MACROS
623 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
625 #ifdef WITH_CONTENT_SCAN
626 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
628 extern int remote_delivery_count; /* Number of remote addresses */
629 extern int remote_max_parallel; /* Maximum parallel delivery */
630 extern uschar *remote_sort_domains; /* Remote domain sorting order */
631 extern retry_config *retries; /* Chain of retry config information */
632 extern int retry_data_expire; /* When to expire retry data */
633 extern int retry_interval_max; /* Absolute maximum */
634 extern int retry_maximum_timeout; /* The maximum timeout */
635 extern uschar *return_path; /* Return path for a message */
636 extern BOOL return_path_remove; /* Remove return-path headers */
637 extern int rewrite_existflags; /* Indicate which headers have rewrites */
638 extern uschar *rfc1413_hosts; /* RFC hosts */
639 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
640 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
641 extern uid_t root_gid; /* The gid for root */
642 extern uid_t root_uid; /* The uid for root */
643 extern router_info routers_available[];/* Vector of available routers */
644 extern router_instance *routers; /* Chain of instantiated routers */
645 extern router_instance router_defaults;/* Default values */
646 extern BOOL running_in_test_harness; /*TRUE when running_status is patched */
647 extern ip_address_item *running_interfaces; /* Host's running interfaces */
648 extern uschar *running_status; /* Flag string for testing */
649 extern int runrc; /* rc from ${run} */
651 extern uschar *search_error_message; /* Details of lookup problem */
652 extern BOOL search_find_defer; /* Set TRUE if lookup deferred */
653 extern uschar *self_hostname; /* Self host after routing->directors */
654 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
655 extern uschar *sender_address_data; /* address_data from sender verify */
656 extern BOOL sender_address_forced; /* Set by -f */
657 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
658 extern uschar *sender_data; /* lookup result for senders */
659 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
660 extern uschar *sender_fullhost; /* Sender host name + address */
661 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
662 extern uschar **sender_host_aliases; /* Points to list of alias names */
663 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
664 extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
665 extern BOOL sender_host_notsocket; /* Set for -bs and -bS */
666 extern BOOL sender_host_unknown; /* TRUE for -bs and -bS except inetd */
667 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
668 extern BOOL sender_local; /* TRUE for local senders */
669 extern BOOL sender_name_forced; /* Set by -F */
670 extern uschar *sender_rate; /* Sender rate computed by ACL */
671 extern uschar *sender_rate_limit; /* Configured rate limit */
672 extern uschar *sender_rate_period; /* Configured smoothing period */
673 extern uschar *sender_rcvhost; /* Host data for Received: */
674 extern BOOL sender_set_untrusted; /* Sender set by untrusted caller */
675 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
676 extern uschar *sender_verify_failure; /* What went wrong */
677 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
678 extern address_item *sender_verified_failed; /* The one that caused denial */
679 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
680 extern int sending_port; /* Port of outgoing interface */
681 extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
682 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
683 extern int smtp_accept_count; /* Count of connections */
684 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
685 extern int smtp_accept_max; /* Max SMTP connections */
686 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
687 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
688 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
689 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
690 extern int smtp_accept_queue; /* Queue after so many connections */
691 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
692 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
693 extern uschar *smtp_active_hostname; /* Hostname for this message */
694 extern BOOL smtp_authenticated; /* Sending client has authenticated */
695 extern uschar *smtp_banner; /* Banner string (to be expanded) */
696 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
697 extern int smtp_ch_index; /* Index in smtp_connection_had */
698 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
699 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
700 extern time_t smtp_connection_start; /* Start time of SMTP connection */
701 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
702 extern int smtp_connect_backlog; /* Max backlog permitted */
703 extern double smtp_delay_mail; /* Current MAIL delay */
704 extern double smtp_delay_rcpt; /* Current RCPT delay */
705 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
706 extern uschar *smtp_etrn_command; /* Command to run */
707 extern BOOL smtp_etrn_serialize; /* Only one at once */
708 extern FILE *smtp_in; /* Incoming SMTP input file */
709 extern int smtp_load_reserve; /* Only from reserved if load > this */
710 extern int smtp_mailcmd_count; /* Count of MAIL commands */
711 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
712 extern int smtp_max_unknown_commands; /* As it says */
713 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
714 extern FILE *smtp_out; /* Incoming SMTP output file */
715 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
716 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
717 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
718 extern uschar *smtp_read_error; /* Message for SMTP input error */
719 extern int smtp_receive_timeout; /* Applies to each received line */
720 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
721 extern BOOL smtp_return_error_details; /* TRUE to return full info */
722 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
723 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
724 extern int smtp_rlm_limit; /* Max delay */
725 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
726 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
727 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
728 extern int smtp_rlr_limit; /* Max delay */
729 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
730 extern BOOL smtp_use_pipelining; /* Global for passed connections */
731 extern BOOL smtp_use_size; /* Global for passed connections */
733 #ifdef WITH_CONTENT_SCAN
734 extern uschar *spamd_address; /* address for the spamassassin daemon */
735 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
736 extern uschar *spam_report; /* the spamd report (multiline) */
737 extern uschar *spam_score; /* the spam score (float) */
738 extern uschar *spam_score_int; /* spam_score * 10 (int) */
740 #ifdef EXPERIMENTAL_SPF
741 extern uschar *spf_guess; /* spf best-guess record */
742 extern uschar *spf_header_comment; /* spf header comment */
743 extern uschar *spf_received; /* Received-SPF: header */
744 extern uschar *spf_result; /* spf result in string form */
745 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
747 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
748 extern uschar *spool_directory; /* Name of spool directory */
749 #ifdef EXPERIMENTAL_SRS
750 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
751 extern uschar *srs_db_address; /* SRS db address */
752 extern uschar *srs_db_key; /* SRS db key */
753 extern int srs_hashlength; /* SRS hash length */
754 extern int srs_hashmin; /* SRS minimum hash length */
755 extern int srs_maxage; /* SRS max age */
756 extern uschar *srs_orig_sender; /* SRS original sender */
757 extern uschar *srs_orig_recipient; /* SRS original recipient */
758 extern uschar *srs_recipient; /* SRS recipient */
759 extern uschar *srs_secrets; /* SRS secrets list */
760 extern uschar *srs_status; /* SRS staus */
761 extern BOOL srs_usehash; /* SRS use hash flag */
762 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
764 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
765 extern int string_datestamp_offset;/* After insertion by string_format */
766 extern int string_datestamp_length;/* After insertion by string_format */
767 extern int string_datestamp_type; /* After insertion by string_format */
768 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
769 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
770 extern uschar *submission_domain; /* Domain for submission mode */
771 extern BOOL submission_mode; /* Can be forced from ACL */
772 extern uschar *submission_name; /* User name set from ACL */
773 extern BOOL suppress_local_fixups; /* Can be forced from ACL */
774 extern BOOL suppress_local_fixups_default; /* former is reset to this; override with -G */
775 extern BOOL synchronous_delivery; /* TRUE if -odi is set */
776 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
777 extern int syslog_facility; /* As defined by Syslog.h */
778 extern uschar *syslog_processname; /* 'ident' param to openlog() */
779 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
780 extern uschar *system_filter; /* Name of system filter file */
782 extern uschar *system_filter_directory_transport; /* Transports for the */
783 extern uschar *system_filter_file_transport; /* system filter */
784 extern uschar *system_filter_pipe_transport;
785 extern uschar *system_filter_reply_transport;
787 extern gid_t system_filter_gid; /* Gid for running system filter */
788 extern BOOL system_filter_gid_set; /* TRUE if gid set */
789 extern uid_t system_filter_uid; /* Uid for running system filter */
790 extern BOOL system_filter_uid_set; /* TRUE if uid set */
791 extern BOOL system_filtering; /* TRUE when running system filter */
793 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
794 #ifdef USE_TCP_WRAPPERS
795 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
797 extern int test_harness_load_avg; /* For use when testing */
798 extern int thismessage_size_limit; /* Limit for this message */
799 extern int timeout_frozen_after; /* Max time to keep frozen messages */
800 extern BOOL timestamps_utc; /* Use UTC for all times */
801 extern int transport_count; /* Count of bytes transported */
802 extern int transport_newlines; /* Accurate count of number of newline chars transported */
803 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
804 extern int transport_filter_timeout; /* Timeout for same */
805 extern BOOL transport_filter_timed_out; /* True if it did */
807 extern transport_info transports_available[]; /* Vector of available transports */
808 extern transport_instance *transports; /* Chain of instantiated transports */
809 extern transport_instance transport_defaults; /* Default values */
811 extern int transport_write_timeout;/* Set to time out individual writes */
813 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
814 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
815 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
816 extern tree_node *tree_unusable; /* Tree of unusable addresses */
818 extern BOOL trusted_caller; /* Caller is trusted */
819 extern BOOL trusted_config; /* Configuration file is trusted */
820 extern gid_t *trusted_groups; /* List of trusted groups */
821 extern uid_t *trusted_users; /* List of trusted users */
822 extern uschar *timezone_string; /* Required timezone setting */
824 extern uschar *unknown_login; /* To use when login id unknown */
825 extern uschar *unknown_username; /* Ditto */
826 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
827 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
828 extern uschar *uucp_from_sender; /* For building the sender */
830 extern uschar *warn_message_file; /* Template for warning messages */
831 extern uschar *warnmsg_delay; /* String form of delay time */
832 extern uschar *warnmsg_recipients; /* Recipients of warning message */
833 extern BOOL write_rejectlog; /* Control of reject logging */
835 extern uschar *version_copyright; /* Copyright notice */
836 extern uschar *version_date; /* Date of compilation */
837 extern uschar *version_cnumber; /* Compile number */
838 extern uschar *version_string; /* Version string */
840 extern int warning_count; /* Delay warnings sent for this msg */
842 /* End of globals.h */
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