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[exim.git] / src / src / globals.h
1 /* $Cambridge: exim/src/src/globals.h,v 1.54 2007/06/14 14:18:19 ph10 Exp $ */
2
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
6
7 /* Copyright (c) University of Cambridge 1995 - 2007 */
8 /* See the file NOTICE for conditions of use and distribution. */
9
10 /* Almost all the global variables are defined together in this one header, so
11 that they are easy to find. However, those that are visible during the
12 compilation of the local_scan() function are defined separately in the
13 local_scan.h header file. */
14
15 /* First put any specials that are required for some operating systems. */
16
17 #ifdef NEED_H_ERRNO
18 extern int h_errno;
19 #endif
20
21 /* Now things that are present only when configured. */
22
23 #ifdef EXIM_PERL
24 extern uschar *opt_perl_startup; /* Startup code for Perl interpreter */
25 extern BOOL opt_perl_at_start; /* Start Perl interpreter at start */
26 extern BOOL opt_perl_started; /* Set once interpreter started */
27 #endif
28
29 #ifdef EXPAND_DLFUNC
30 extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
31 #endif
32
33 #ifdef LOOKUP_IBASE
34 extern uschar *ibase_servers;
35 #endif
36
37 #ifdef LOOKUP_LDAP
38 extern uschar *eldap_default_servers; /* List of default servers */
39 extern int eldap_version; /* LDAP version */
40 #endif
41
42 #ifdef LOOKUP_MYSQL
43 extern uschar *mysql_servers; /* List of servers and connect info */
44 #endif
45
46 #ifdef LOOKUP_ORACLE
47 extern uschar *oracle_servers; /* List of servers and connect info */
48 #endif
49
50 #ifdef LOOKUP_PGSQL
51 extern uschar *pgsql_servers; /* List of servers and connect info */
52 #endif
53
54 #ifdef LOOKUP_SQLITE
55 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
56 #endif
57
58 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
59 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
60 #endif
61
62 /* These variables are outside the #ifdef because it keeps the code less
63 cluttered in several places (e.g. during logging) if we can always refer to
64 them. Also, the tls_ variables are now always visible. */
65
66 extern int tls_active; /* fd/socket when in a TLS session */
67 extern BOOL tls_certificate_verified; /* Client certificate verified */
68 extern uschar *tls_cipher; /* Cipher used */
69 extern BOOL tls_on_connect; /* For older MTAs that don't STARTTLS */
70 extern uschar *tls_on_connect_ports; /* Ports always tls-on-connect */
71 extern uschar *tls_peerdn; /* DN from peer */
72
73 #ifdef SUPPORT_TLS
74 extern uschar *gnutls_require_mac; /* So some can be avoided */
75 extern uschar *gnutls_require_kx; /* So some can be avoided */
76 extern uschar *gnutls_require_proto; /* So some can be avoided */
77 extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
78 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
79 extern uschar *tls_certificate; /* Certificate file */
80 extern uschar *tls_crl; /* CRL File */
81 extern uschar *tls_dhparam; /* DH param file */
82 extern BOOL tls_offered; /* Server offered TLS */
83 extern uschar *tls_privatekey; /* Private key file */
84 extern BOOL tls_remember_esmtp; /* For YAEB */
85 extern uschar *tls_require_ciphers; /* So some can be avoided */
86 extern uschar *tls_try_verify_hosts; /* Optional client verification */
87 extern uschar *tls_verify_certificates;/* Path for certificates to check */
88 extern uschar *tls_verify_hosts; /* Mandatory client verification */
89 #endif
90
91
92 /* Input-reading functions for messages, so we can use special ones for
93 incoming TCP/IP. */
94
95 extern int (*receive_getc)(void);
96 extern int (*receive_ungetc)(int);
97 extern int (*receive_feof)(void);
98 extern int (*receive_ferror)(void);
99 extern BOOL (*receive_smtp_buffered)(void);
100
101
102 /* For clearing, saving, restoring address expansion variables. We have to have
103 the size of this vector set explicitly, because it is referenced from more than
104 one module. */
105
106 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
107
108 /* General global variables */
109
110 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
111 extern header_line *acl_added_headers; /* Headers added by an ACL */
112 extern tree_node *acl_anchor; /* Tree of named ACLs */
113 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
114 #ifdef WITH_CONTENT_SCAN
115 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
116 #endif
117 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
118 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
119 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
120 extern uschar *acl_smtp_data; /* ACL run after DATA received */
121 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
122 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
123 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
124 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
125 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
126 #ifdef WITH_CONTENT_SCAN
127 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
128 #endif
129 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
130 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
131 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
132 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
133 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
134 extern BOOL acl_temp_details; /* TRUE to give details for 4xx error */
135 extern tree_node *acl_var_c; /* ACL connection variables */
136 extern tree_node *acl_var_m; /* ACL messsage variables */
137 extern uschar *acl_verify_message; /* User message for verify failure */
138 extern string_item *acl_warn_logged; /* Logged lines */
139 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
140 extern uschar *acl_wherenames[]; /* Names for messages */
141 extern BOOL active_local_from_check;/* For adding Sender: (switchable) */
142 extern BOOL active_local_sender_retain; /* For keeping Sender: (switchable) */
143 extern address_item *addr_duplicate; /* Duplicate address list */
144 extern address_item address_defaults; /* Default data for address item */
145 extern uschar *address_file; /* Name of file when delivering to one */
146 extern uschar *address_pipe; /* Pipe command when delivering to one */
147 extern BOOL address_test_mode; /* True for -bt */
148 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
149 extern int addresslist_count; /* Number defined */
150 extern gid_t *admin_groups; /* List of admin groups */
151 extern BOOL admin_user; /* True if caller can do admin */
152 extern BOOL allow_auth_unadvertised;/* As it says */
153 extern BOOL allow_domain_literals; /* As it says */
154 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
155 extern BOOL allow_unqualified_recipient; /* As it says */
156 extern BOOL allow_unqualified_sender; /* Ditto */
157 extern BOOL allow_utf8_domains; /* For experimenting */
158 extern uschar *authenticated_id; /* ID that was authenticated */
159 extern uschar *authenticated_sender; /* From AUTH on MAIL */
160 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
161 extern uschar *auth_advertise_hosts; /* Only advertise to these */
162 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
163 extern auth_instance *auths; /* Chain of instantiated auths */
164 extern auth_instance auth_defaults; /* Default values */
165 extern uschar *auth_defer_msg; /* Error message for log */
166 extern uschar *auth_defer_user_msg; /* Error message for user */
167 extern uschar *auth_vars[]; /* $authn variables */
168 extern int auto_thaw; /* Auto-thaw interval */
169 #ifdef WITH_CONTENT_SCAN
170 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
171 #endif
172
173 extern BOOL background_daemon; /* Set FALSE to keep in foreground */
174 extern uschar *base62_chars; /* Table of base-62 characters */
175 extern uschar *bi_command; /* Command for -bi option */
176 extern uschar *big_buffer; /* Used for various temp things */
177 extern int big_buffer_size; /* Current size (can expand) */
178 #ifdef EXPERIMENTAL_BRIGHTMAIL
179 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
180 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
181 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
182 extern uschar *bmi_config_file; /* Brightmail config file */
183 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
184 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
185 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
186 #endif
187 extern uschar *bounce_message_file; /* Template file */
188 extern uschar *bounce_message_text; /* One-liner */
189 extern uschar *bounce_recipient; /* When writing an errmsg */
190 extern BOOL bounce_return_body; /* Include body in returned message */
191 extern BOOL bounce_return_message; /* Include message in bounce */
192 extern int bounce_return_size_limit; /* Max amount to return */
193 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
194 extern int bsmtp_transaction_linecount; /* Start of last transaction */
195
196 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
197 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
198 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
199 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
200 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
201 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
202 extern int check_log_inodes; /* Minimum for message acceptance */
203 extern int check_log_space; /* Minimum for message acceptance */
204 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
205 extern int check_spool_inodes; /* Minimum for message acceptance */
206 extern int check_spool_space; /* Minimum for message acceptance */
207 extern int clmacro_count; /* Number of command line macros */
208 extern uschar *clmacros[]; /* Copy of them, for re-exec */
209 extern int connection_max_messages;/* Max down one SMTP connection */
210 extern BOOL config_changed; /* True if -C used */
211 extern FILE *config_file; /* Configuration file */
212 extern uschar *config_filename; /* Configuration file name */
213 #ifdef CONFIGURE_GROUP
214 extern gid_t config_gid; /* Additional group owner */
215 #endif
216 extern int config_lineno; /* Line number */
217 extern uschar *config_main_filelist; /* List of possible config files */
218 extern uschar *config_main_filename; /* File name actually used */
219 #ifdef CONFIGURE_OWNER
220 extern uid_t config_uid; /* Additional owner */
221 #endif
222 extern uschar *continue_hostname; /* Host for continued delivery */
223 extern uschar *continue_host_address; /* IP address for ditto */
224 extern BOOL continue_more; /* Flag more addresses waiting */
225 extern int continue_sequence; /* Sequence num for continued delivery */
226 extern uschar *continue_transport; /* Transport for continued delivery */
227
228 extern uschar *csa_status; /* Client SMTP Authorization result */
229
230 extern BOOL daemon_listen; /* True if listening required */
231 extern uschar *daemon_smtp_port; /* Can be a list of ports */
232 extern int daemon_startup_retries; /* Number of times to retry */
233 extern int daemon_startup_sleep; /* Sleep between retries */
234 extern BOOL debug_daemon; /* Debug the daemon process only */
235 extern int debug_fd; /* The fd for debug_file */
236 extern FILE *debug_file; /* Where to write debugging info */
237 extern bit_table debug_options[]; /* Table of debug options */
238 extern int debug_options_count; /* Size of table */
239 extern int delay_warning[]; /* Times between warnings */
240 extern uschar *delay_warning_condition; /* Condition string for warnings */
241 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
242
243 extern uschar *deliver_address_data; /* Arbitrary data for an address */
244 extern int deliver_datafile; /* FD for data part of message */
245 extern uschar *deliver_domain; /* The local domain for delivery */
246 extern uschar *deliver_domain_data; /* From domain lookup */
247 extern uschar *deliver_domain_orig; /* The original local domain for delivery */
248 extern uschar *deliver_domain_parent; /* The parent domain for delivery */
249 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
250 extern BOOL deliver_firsttime; /* True for first delivery attempt */
251 extern BOOL deliver_force; /* TRUE if delivery was forced */
252 extern BOOL deliver_freeze; /* TRUE if delivery is frozen */
253 extern int deliver_frozen_at; /* Time of freezing */
254 extern uschar *deliver_home; /* Home directory for pipes */
255 extern uschar *deliver_host; /* (First) host for routed local deliveries */
256 /* Remote host for filter */
257 extern uschar *deliver_host_address; /* Address for remote delivery filter */
258 extern uschar *deliver_in_buffer; /* Buffer for copying file */
259 extern ino_t deliver_inode; /* Inode for appendfile */
260 extern uschar *deliver_localpart; /* The local part for delivery */
261 extern uschar *deliver_localpart_data; /* From local part lookup */
262 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
263 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
264 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
265 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
266 extern BOOL deliver_force_thaw; /* TRUE to force thaw in queue run */
267 extern BOOL deliver_manual_thaw; /* TRUE if manually thawed */
268 extern uschar *deliver_out_buffer; /* Buffer for copying file */
269 extern int deliver_queue_load_max; /* Different value for queue running */
270 extern address_item *deliver_recipients; /* Current set of addresses */
271 extern uschar *deliver_selectstring; /* For selecting by recipient */
272 extern BOOL deliver_selectstring_regex; /* String is regex */
273 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
274 extern BOOL deliver_selectstring_sender_regex; /* String is regex */
275 #ifdef WITH_OLD_DEMIME
276 extern int demime_errorlevel; /* Severity of MIME error */
277 extern int demime_ok; /* Nonzero if message has been demimed */
278 extern uschar *demime_reason; /* Reason for broken MIME container */
279 #endif
280 extern BOOL disable_callout_flush; /* Don't flush before callouts */
281 extern BOOL disable_delay_flush; /* Don't flush before "delay" in ACL */
282 #ifdef ENABLE_DISABLE_FSYNC
283 extern BOOL disable_fsync; /* Not for normal use */
284 #endif
285 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
286 extern BOOL disable_logging; /* Disables log writing when TRUE */
287
288 #ifdef EXPERIMENTAL_DOMAINKEYS
289 extern uschar *dk_signing_domain; /* Domain used for signing a message. */
290 extern uschar *dk_signing_selector; /* Selector used for signing a message. */
291 extern int dk_do_verify; /* DK verification switch. Set with ACL control statement. */
292 #endif
293
294 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
295 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
296 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
297 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
298 extern int dns_retrans; /* Retransmission time setting */
299 extern int dns_retry; /* Number of retries */
300 extern uschar *dnslist_domain; /* DNS (black) list domain */
301 extern uschar *dnslist_matched; /* DNS (black) list matched key */
302 extern uschar *dnslist_text; /* DNS (black) list text message */
303 extern uschar *dnslist_value; /* DNS (black) list IP address */
304 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
305 extern int domainlist_count; /* Number defined */
306 extern BOOL dont_deliver; /* TRUE for -N option */
307 extern BOOL dot_ends; /* TRUE if "." ends non-SMTP input */
308
309 /* This option is now a no-opt, retained for compatibility */
310 extern BOOL drop_cr; /* For broken local MUAs */
311
312 extern uschar *dsn_from; /* From: string for DSNs */
313
314 extern BOOL enable_dollar_recipients; /* Make $recipients available */
315 extern int envelope_to_remove; /* Remove envelope_to_headers */
316 extern int errno_quota; /* Quota errno in this OS */
317 extern int error_handling; /* Error handling style */
318 extern uschar *errors_copy; /* For taking copies of errors */
319 extern uschar *errors_reply_to; /* Reply-to for error messages */
320 extern int errors_sender_rc; /* Return after message to sender*/
321 extern gid_t exim_gid; /* To be used with exim_uid */
322 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
323 extern uschar *exim_path; /* Path to exec exim */
324 extern uid_t exim_uid; /* Non-root uid for exim */
325 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
326 extern int expand_forbid; /* RDO flags for forbidding things */
327 extern int expand_nlength[]; /* Lengths of numbered strings */
328 extern int expand_nmax; /* Max numerical value */
329 extern uschar *expand_nstring[]; /* Numbered strings */
330 extern BOOL expand_string_forcedfail; /* TRUE if failure was "expected" */
331 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
332 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
333
334 extern int fake_response; /* Fake FAIL or DEFER response to data */
335 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
336 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
337 extern BOOL filter_running; /* TRUE while running a filter */
338 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
339 extern int filter_test; /* Filter test type */
340 extern uschar *filter_test_sfile; /* System filter test file */
341 extern uschar *filter_test_ufile; /* User filter test file */
342 extern uschar *filter_thisaddress; /* For address looping */
343 extern int finduser_retries; /* Retry count for getpwnam() */
344 extern uid_t fixed_never_users[]; /* Can't be overridden */
345 #ifdef WITH_OLD_DEMIME
346 extern uschar *found_extension; /* demime acl condition: file extension found */
347 #endif
348 extern uschar *freeze_tell; /* Message on (some) freezings */
349 extern uschar *freeze_tell_config; /* The configured setting */
350 extern uschar *fudged_queue_times; /* For use in test harness */
351
352 extern uschar *gecos_name; /* To be expanded when pattern matches */
353 extern uschar *gecos_pattern; /* Pattern to match */
354 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
355
356 extern int header_insert_maxlen; /* Max for inserting headers */
357 extern int header_maxsize; /* Max total length for header */
358 extern int header_line_maxsize; /* Max for an individual line */
359 extern header_name header_names[]; /* Table of header names */
360 extern int header_names_size; /* Number of entries */
361 extern BOOL header_rewritten; /* TRUE if header changed by router */
362 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
363 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
364 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
365 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
366 extern BOOL helo_verified; /* True if HELO verified */
367 extern BOOL helo_verify_failed; /* True if attempt failed */
368 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
369 extern uschar *hex_digits; /* Used in several places */
370 extern uschar *hold_domains; /* Hold up deliveries to these */
371 extern BOOL host_find_failed_syntax;/* DNS syntax check failure */
372 extern BOOL host_checking_callout; /* TRUE if real callout wanted */
373 extern uschar *host_data; /* Obtained from lookup in ACL */
374 extern uschar *host_lookup; /* For which IP addresses are always looked up */
375 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
376 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
377 extern uschar *host_lookup_order; /* Order of host lookup types */
378 extern uschar *host_lookup_msg; /* Text for why it failed */
379 extern int host_number; /* For sharing spools */
380 extern uschar *host_number_string; /* For expanding */
381 extern uschar *host_reject_connection; /* Reject these hosts */
382 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
383 extern int hostlist_count; /* Number defined */
384 extern uschar *hosts_connection_nolog; /* Limits the logging option */
385 extern uschar *hosts_treat_as_local; /* For routing */
386
387 extern int ignore_bounce_errors_after; /* Keep them for this time. */
388 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
389 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
390 extern BOOL is_inetd; /* True for inetd calls */
391 extern uschar *iterate_item; /* Item from iterate list */
392
393 extern int journal_fd; /* Fd for journal file */
394
395 extern int keep_malformed; /* Time to keep malformed messages */
396
397 extern uschar *eldap_dn; /* Where LDAP DNs are left */
398 extern int load_average; /* Most recently read load average */
399 extern BOOL local_error_message; /* True if handling one of these */
400 extern BOOL local_from_check; /* For adding Sender: (global value) */
401 extern uschar *local_from_prefix; /* Permitted prefixes */
402 extern uschar *local_from_suffix; /* Permitted suffixes */
403 extern uschar *local_interfaces; /* For forcing specific interfaces */
404 extern uschar *local_scan_data; /* Text returned by local_scan() */
405 extern optionlist local_scan_options[];/* Option list for local_scan() */
406 extern int local_scan_options_count; /* Size of the list */
407 extern int local_scan_timeout; /* Timeout for local_scan() */
408 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
409 extern gid_t local_user_gid; /* As it says; may be set in routers */
410 extern uid_t local_user_uid; /* As it says; may be set in routers */
411 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
412 extern int localpartlist_count; /* Number defined */
413 extern uschar *log_buffer; /* For constructing log entries */
414 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
415 extern uschar *log_file_path; /* If unset, use default */
416 extern bit_table log_options[]; /* Table of options */
417 extern int log_options_count; /* Size of table */
418 extern int log_reject_target; /* Target log for ACL rejections */
419 extern uschar *log_selector_string; /* As supplied in the config */
420 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
421 extern BOOL log_testing_mode; /* TRUE in various testing modes */
422 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
423 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
424 extern uschar *login_sender_address; /* The actual sender address */
425 extern lookup_info lookup_list[]; /* Vector of available lookups */
426 extern int lookup_list_count; /* Number of entries in the list */
427 extern int lookup_open_max; /* Max lookup files to cache */
428 extern uschar *lookup_value; /* Value looked up from file */
429
430 extern macro_item *macros; /* Configuration macros */
431 extern uschar *mailstore_basename; /* For mailstore deliveries */
432 #ifdef WITH_CONTENT_SCAN
433 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
434 #endif
435 extern int max_username_length; /* For systems with broken getpwnam() */
436 extern int message_age; /* In seconds */
437 extern uschar *message_body; /* Start of message body for filter */
438 extern uschar *message_body_end; /* End of message body for filter */
439 extern int message_body_size; /* Sic */
440 extern int message_body_visible; /* Amount visible in message_body */
441 extern int message_ended; /* State of message reading and how ended */
442 extern uschar *message_headers; /* When built */
443 extern uschar message_id_option[]; /* -E<message-id> for use as option */
444 extern uschar *message_id_external; /* External form of following */
445 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
446 extern uschar *message_id_text; /* Expanded to form message_id */
447 extern struct timeval message_id_tv; /* Time used to create last message_id */
448 extern int message_linecount; /* As it says */
449 extern BOOL message_logs; /* TRUE to write message logs */
450 extern int message_size; /* Size of message */
451 extern uschar *message_size_limit; /* As it says */
452 extern uschar message_subdir[]; /* Subdirectory for messages */
453 extern uschar *message_reference; /* Reference for error messages */
454
455 /* MIME ACL expandables */
456 #ifdef WITH_CONTENT_SCAN
457 extern int mime_anomaly_level;
458 extern uschar *mime_anomaly_text;
459 extern uschar *mime_boundary;
460 extern uschar *mime_charset;
461 extern uschar *mime_content_description;
462 extern uschar *mime_content_disposition;
463 extern uschar *mime_content_id;
464 extern unsigned int mime_content_size;
465 extern uschar *mime_content_transfer_encoding;
466 extern uschar *mime_content_type;
467 extern uschar *mime_decoded_filename;
468 extern uschar *mime_filename;
469 extern int mime_is_multipart;
470 extern int mime_is_coverletter;
471 extern int mime_is_rfc822;
472 extern int mime_part_count;
473 #endif
474
475 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
476
477 extern uid_t *never_users; /* List of uids never to be used */
478 #ifdef WITH_CONTENT_SCAN
479 extern BOOL no_mbox_unspool; /* don't unlink files in /scan directory */
480 #endif
481 extern BOOL no_multiline_responses; /* For broken clients */
482
483 extern optionlist optionlist_auths[]; /* These option lists are made */
484 extern int optionlist_auths_size; /* global so that readconf can */
485 extern optionlist optionlist_routers[]; /* see them for printing out */
486 extern int optionlist_routers_size; /* the options. */
487 extern optionlist optionlist_transports[];
488 extern int optionlist_transports_size;
489
490 extern uid_t original_euid; /* Original effective uid */
491 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
492 extern uschar *originator_login; /* Login of same */
493 extern uschar *originator_name; /* Full name of same */
494 extern uid_t originator_uid; /* Uid of ditto */
495 extern uschar *override_local_interfaces; /* Value of -oX argument */
496 extern uschar *override_pid_file_path; /* Value of -oP argument */
497
498 extern BOOL parse_allow_group; /* Allow group syntax */
499 extern BOOL parse_found_group; /* In the middle of a group */
500 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
501 extern uschar *pid_file_path; /* For writing daemon pids */
502 extern uschar *pipelining_advertise_hosts; /* As it says */
503 extern BOOL pipelining_enable; /* As it says */
504 extern BOOL preserve_message_logs; /* Save msglog files */
505 extern uschar *primary_hostname; /* Primary name of this computer */
506 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
507 extern uschar process_info[]; /* For SIGUSR1 output */
508 extern uschar *process_log_path; /* Alternate path */
509 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
510 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
511 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
512 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
513
514 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
515 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
516 extern BOOL queue_2stage; /* Run queue in 2-stage manner */
517 extern uschar *queue_domains; /* Queue these domains */
518 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
519 extern BOOL queue_run_first_delivery; /* If TRUE, first deliveries only */
520 extern BOOL queue_run_force; /* TRUE to force during queue run */
521 extern BOOL queue_run_local; /* Local deliveries only in queue run */
522 extern BOOL queue_running; /* TRUE for queue running process and */
523 /* immediate children */
524 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
525 extern int queue_run_pipe; /* Pipe for synchronizing */
526 extern int queue_interval; /* Queue running interval */
527 extern BOOL queue_only; /* TRUE to disable immediate delivery */
528 extern int queue_only_load; /* Max load before auto-queue */
529 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
530 extern BOOL queue_only_override; /* Allow override from command line */
531 extern BOOL queue_only_policy; /* ACL or local_scan wants queue_only */
532 extern BOOL queue_run_in_order; /* As opposed to random */
533 extern int queue_run_max; /* Max queue runners */
534 extern BOOL queue_smtp; /* Disable all immediate STMP (-odqs)*/
535 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
536
537 extern unsigned int random_seed; /* Seed for random numbers */
538 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
539 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
540 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
541 extern uschar *raw_active_hostname; /* Pre-expansion */
542 extern uschar *raw_sender; /* Before rewriting */
543 extern uschar **raw_recipients; /* Before rewriting */
544 extern int raw_recipients_count;
545 extern int rcpt_count; /* Count of RCPT commands in a message */
546 extern int rcpt_fail_count; /* Those that got 5xx */
547 extern int rcpt_defer_count; /* Those that got 4xx */
548 extern gid_t real_gid; /* Real gid */
549 extern uid_t real_uid; /* Real user running program */
550 extern BOOL really_exim; /* FALSE in utilities */
551 extern BOOL receive_call_bombout; /* Flag for crashing log */
552 extern int receive_linecount; /* Mainly for BSMTP errors */
553 extern int receive_messagecount; /* Mainly for BSMTP errors */
554 extern int receive_timeout; /* For non-SMTP acceptance */
555 extern int received_count; /* Count of Received: headers */
556 extern uschar *received_for; /* For "for" field */
557 extern uschar *received_header_text; /* Definition of Received: header */
558 extern int received_headers_max; /* Max count of Received: headers */
559 extern int received_time; /* Time the message was received */
560 extern uschar *recipient_data; /* lookup data for recipients */
561 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
562 extern uschar *recipient_verify_failure; /* What went wrong */
563 extern BOOL recipients_discarded; /* By an ACL */
564 extern int recipients_list_max; /* Maximum number fitting in list */
565 extern int recipients_max; /* Max permitted */
566 extern int recipients_max_reject; /* If TRUE, reject whole message */
567 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
568 extern const pcre *regex_check_dns_names; /* For DNS name checking */
569 extern const pcre *regex_From; /* For recognizing "From_" lines */
570 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
571 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
572 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
573 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
574 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
575 #ifdef WITH_CONTENT_SCAN
576 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
577 #endif
578 extern int remote_delivery_count; /* Number of remote addresses */
579 extern int remote_max_parallel; /* Maximum parallel delivery */
580 extern uschar *remote_sort_domains; /* Remote domain sorting order */
581 extern retry_config *retries; /* Chain of retry config information */
582 extern int retry_data_expire; /* When to expire retry data */
583 extern int retry_interval_max; /* Absolute maximum */
584 extern int retry_maximum_timeout; /* The maximum timeout */
585 extern uschar *return_path; /* Return path for a message */
586 extern BOOL return_path_remove; /* Remove return-path headers */
587 extern int rewrite_existflags; /* Indicate which headers have rewrites */
588 extern uschar *rfc1413_hosts; /* RFC hosts */
589 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
590 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
591 extern uid_t root_uid; /* The uid for root */
592 extern router_info routers_available[];/* Vector of available routers */
593 extern router_instance *routers; /* Chain of instantiated routers */
594 extern router_instance router_defaults;/* Default values */
595 extern BOOL running_in_test_harness; /*TRUE when running_status is patched */
596 extern ip_address_item *running_interfaces; /* Host's running interfaces */
597 extern uschar *running_status; /* Flag string for testing */
598 extern int runrc; /* rc from ${run} */
599
600 extern uschar *search_error_message; /* Details of lookup problem */
601 extern BOOL search_find_defer; /* Set TRUE if lookup deferred */
602 extern uschar *self_hostname; /* Self host after routing->directors */
603 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
604 extern uschar *sender_address_data; /* address_data from sender verify */
605 extern BOOL sender_address_forced; /* Set by -f */
606 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
607 extern uschar *sender_data; /* lookup result for senders */
608 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
609 extern uschar *sender_fullhost; /* Sender host name + address */
610 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
611 extern uschar **sender_host_aliases; /* Points to list of alias names */
612 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
613 extern BOOL sender_host_notsocket; /* Set for -bs and -bS */
614 extern BOOL sender_host_unknown; /* TRUE for -bs and -bS except inetd */
615 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
616 extern BOOL sender_local; /* TRUE for local senders */
617 extern BOOL sender_name_forced; /* Set by -F */
618 extern uschar *sender_rate; /* Sender rate computed by ACL */
619 extern uschar *sender_rate_limit; /* Configured rate limit */
620 extern uschar *sender_rate_period; /* Configured smoothing period */
621 extern uschar *sender_rcvhost; /* Host data for Received: */
622 extern BOOL sender_set_untrusted; /* Sender set by untrusted caller */
623 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
624 extern uschar *sender_verify_failure; /* What went wrong */
625 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
626 extern address_item *sender_verified_failed; /* The one that caused denial */
627 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
628 extern int sending_port; /* Port of outgoing interface */
629 extern volatile BOOL sigalrm_seen; /* Flag for sigalrm_handler */
630 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
631 extern int smtp_accept_count; /* Count of connections */
632 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
633 extern int smtp_accept_max; /* Max SMTP connections */
634 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
635 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
636 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
637 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
638 extern int smtp_accept_queue; /* Queue after so many connections */
639 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
640 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
641 extern uschar *smtp_active_hostname; /* Hostname for this message */
642 extern BOOL smtp_authenticated; /* Sending client has authenticated */
643 extern uschar *smtp_banner; /* Banner string (to be expanded) */
644 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
645 extern int smtp_ch_index; /* Index in smtp_connection_had */
646 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
647 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
648 extern time_t smtp_connection_start; /* Start time of SMTP connection */
649 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
650 extern int smtp_connect_backlog; /* Max backlog permitted */
651 extern double smtp_delay_mail; /* Current MAIL delay */
652 extern double smtp_delay_rcpt; /* Current RCPT delay */
653 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
654 extern uschar *smtp_etrn_command; /* Command to run */
655 extern BOOL smtp_etrn_serialize; /* Only one at once */
656 extern FILE *smtp_in; /* Incoming SMTP input file */
657 extern int smtp_load_reserve; /* Only from reserved if load > this */
658 extern int smtp_mailcmd_count; /* Count of MAIL commands */
659 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
660 extern int smtp_max_unknown_commands; /* As it says */
661 extern FILE *smtp_out; /* Incoming SMTP output file */
662 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
663 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
664 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
665 extern uschar *smtp_read_error; /* Message for SMTP input error */
666 extern int smtp_receive_timeout; /* Applies to each received line */
667 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
668 extern BOOL smtp_return_error_details; /* TRUE to return full info */
669 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
670 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
671 extern int smtp_rlm_limit; /* Max delay */
672 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
673 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
674 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
675 extern int smtp_rlr_limit; /* Max delay */
676 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
677 extern BOOL smtp_use_pipelining; /* Global for passed connections */
678 extern BOOL smtp_use_size; /* Global for passed connections */
679
680 #ifdef WITH_CONTENT_SCAN
681 extern uschar *spamd_address; /* address for the spamassassin daemon */
682 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
683 extern uschar *spam_report; /* the spamd report (multiline) */
684 extern uschar *spam_score; /* the spam score (float) */
685 extern uschar *spam_score_int; /* spam_score * 10 (int) */
686 #endif
687 #ifdef EXPERIMENTAL_SPF
688 extern uschar *spf_header_comment; /* spf header comment */
689 extern uschar *spf_received; /* SPF-Received: header */
690 extern uschar *spf_result; /* spf result in string form */
691 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
692 #endif
693 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
694 extern uschar *spool_directory; /* Name of spool directory */
695 #ifdef EXPERIMENTAL_SRS
696 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
697 extern uschar *srs_db_address; /* SRS db address */
698 extern uschar *srs_db_key; /* SRS db key */
699 extern int srs_hashlength; /* SRS hash length */
700 extern int srs_hashmin; /* SRS minimum hash length */
701 extern int srs_maxage; /* SRS max age */
702 extern uschar *srs_orig_sender; /* SRS original sender */
703 extern uschar *srs_orig_recipient; /* SRS original recipient */
704 extern uschar *srs_recipient; /* SRS recipient */
705 extern uschar *srs_secrets; /* SRS secrets list */
706 extern uschar *srs_status; /* SRS staus */
707 extern BOOL srs_usehash; /* SRS use hash flag */
708 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
709 #endif
710 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
711 extern int string_datestamp_offset;/* After insertion by string_format */
712 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
713 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
714 extern uschar *submission_domain; /* Domain for submission mode */
715 extern BOOL submission_mode; /* Can be forced from ACL */
716 extern uschar *submission_name; /* User name set from ACL */
717 extern BOOL suppress_local_fixups; /* Can be forced from ACL */
718 extern BOOL synchronous_delivery; /* TRUE if -odi is set */
719 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
720 extern int syslog_facility; /* As defined by Syslog.h */
721 extern uschar *syslog_processname; /* 'ident' param to openlog() */
722 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
723 extern uschar *system_filter; /* Name of system filter file */
724
725 extern uschar *system_filter_directory_transport; /* Transports for the */
726 extern uschar *system_filter_file_transport; /* system filter */
727 extern uschar *system_filter_pipe_transport;
728 extern uschar *system_filter_reply_transport;
729
730 extern gid_t system_filter_gid; /* Gid for running system filter */
731 extern BOOL system_filter_gid_set; /* TRUE if gid set */
732 extern uid_t system_filter_uid; /* Uid for running system filter */
733 extern BOOL system_filter_uid_set; /* TRUE if uid set */
734 extern BOOL system_filtering; /* TRUE when running system filter */
735
736 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
737 extern int thismessage_size_limit; /* Limit for this message */
738 extern int timeout_frozen_after; /* Max time to keep frozen messages */
739 extern BOOL timestamps_utc; /* Use UTC for all times */
740 extern int transport_count; /* Count of bytes transported */
741 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
742 extern int transport_filter_timeout; /* Timeout for same */
743 extern BOOL transport_filter_timed_out; /* True if it did */
744
745 extern transport_info transports_available[]; /* Vector of available transports */
746 extern transport_instance *transports; /* Chain of instantiated transports */
747 extern transport_instance transport_defaults; /* Default values */
748
749 extern int transport_write_timeout;/* Set to time out individual writes */
750
751 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
752 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
753 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
754 extern tree_node *tree_unusable; /* Tree of unusable addresses */
755
756 extern BOOL trusted_caller; /* Caller is trusted */
757 extern gid_t *trusted_groups; /* List of trusted groups */
758 extern uid_t *trusted_users; /* List of trusted users */
759 extern uschar *timezone_string; /* Required timezone setting */
760
761 extern uschar *unknown_login; /* To use when login id unknown */
762 extern uschar *unknown_username; /* Ditto */
763 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
764 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
765 extern uschar *uucp_from_sender; /* For building the sender */
766
767 extern uschar *warn_message_file; /* Template for warning messages */
768 extern uschar *warnmsg_delay; /* String form of delay time */
769 extern uschar *warnmsg_recipients; /* Recipients of warning message */
770 extern BOOL write_rejectlog; /* Control of reject logging */
771
772 extern uschar *version_copyright; /* Copyright notice */
773 extern uschar *version_date; /* Date of compilation */
774 extern uschar *version_cnumber; /* Compile number */
775 extern uschar *version_string; /* Version string */
776
777 extern int warning_count; /* Delay warnings sent for this msg */
778
779 /* End of globals.h */
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