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[exim.git] / src / src / globals.h
1 /* $Cambridge: exim/src/src/globals.h,v 1.69 2010/06/12 15:21:26 jetmore Exp $ */
2
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
6
7 /* Copyright (c) University of Cambridge 1995 - 2009 */
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_ca_cert_dir; /* Directory with CA certificates */
39 extern uschar *eldap_ca_cert_file; /* CA certificate file */
40 extern uschar *eldap_cert_file; /* Certificate file */
41 extern uschar *eldap_cert_key; /* Certificate key file */
42 extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
43 extern uschar *eldap_default_servers; /* List of default servers */
44 extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
45 extern BOOL eldap_start_tls; /* Use STARTTLS */
46 extern int eldap_version; /* LDAP version */
47 #endif
48
49 #ifdef LOOKUP_MYSQL
50 extern uschar *mysql_servers; /* List of servers and connect info */
51 #endif
52
53 #ifdef LOOKUP_ORACLE
54 extern uschar *oracle_servers; /* List of servers and connect info */
55 #endif
56
57 #ifdef LOOKUP_PGSQL
58 extern uschar *pgsql_servers; /* List of servers and connect info */
59 #endif
60
61 #ifdef LOOKUP_SQLITE
62 extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
63 #endif
64
65 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
66 extern BOOL move_frozen_messages; /* Get them out of the normal directory */
67 #endif
68
69 /* These variables are outside the #ifdef because it keeps the code less
70 cluttered in several places (e.g. during logging) if we can always refer to
71 them. Also, the tls_ variables are now always visible. */
72
73 extern int tls_active; /* fd/socket when in a TLS session */
74 extern BOOL tls_certificate_verified; /* Client certificate verified */
75 extern uschar *tls_cipher; /* Cipher used */
76 extern BOOL tls_on_connect; /* For older MTAs that don't STARTTLS */
77 extern uschar *tls_on_connect_ports; /* Ports always tls-on-connect */
78 extern uschar *tls_peerdn; /* DN from peer */
79
80 #ifdef SUPPORT_TLS
81 extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
82 extern uschar *gnutls_require_mac; /* So some can be avoided */
83 extern uschar *gnutls_require_kx; /* So some can be avoided */
84 extern uschar *gnutls_require_proto; /* So some can be avoided */
85 extern uschar *openssl_options; /* OpenSSL compatibility options */
86 extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
87 extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
88 extern uschar *tls_certificate; /* Certificate file */
89 extern uschar *tls_crl; /* CRL File */
90 extern uschar *tls_dhparam; /* DH param file */
91 extern BOOL tls_offered; /* Server offered TLS */
92 extern uschar *tls_privatekey; /* Private key file */
93 extern BOOL tls_remember_esmtp; /* For YAEB */
94 extern uschar *tls_require_ciphers; /* So some can be avoided */
95 extern uschar *tls_try_verify_hosts; /* Optional client verification */
96 extern uschar *tls_verify_certificates;/* Path for certificates to check */
97 extern uschar *tls_verify_hosts; /* Mandatory client verification */
98 #endif
99
100
101 /* Input-reading functions for messages, so we can use special ones for
102 incoming TCP/IP. */
103
104 extern int (*receive_getc)(void);
105 extern int (*receive_ungetc)(int);
106 extern int (*receive_feof)(void);
107 extern int (*receive_ferror)(void);
108 extern BOOL (*receive_smtp_buffered)(void);
109
110
111 /* For clearing, saving, restoring address expansion variables. We have to have
112 the size of this vector set explicitly, because it is referenced from more than
113 one module. */
114
115 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
116
117 /* General global variables */
118
119 extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
120 extern header_line *acl_added_headers; /* Headers added by an ACL */
121 extern tree_node *acl_anchor; /* Tree of named ACLs */
122 extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
123 #ifdef WITH_CONTENT_SCAN
124 extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
125 #endif
126 extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
127 extern uschar *acl_smtp_auth; /* ACL run for AUTH */
128 extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
129 extern uschar *acl_smtp_data; /* ACL run after DATA received */
130 #ifndef DISABLE_DKIM
131 extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
132 #endif
133 extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
134 extern uschar *acl_smtp_expn; /* ACL run for EXPN */
135 extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
136 extern uschar *acl_smtp_mail; /* ACL run for MAIL */
137 extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
138 #ifdef WITH_CONTENT_SCAN
139 extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
140 #endif
141 extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
142 extern uschar *acl_smtp_predata; /* ACL run for DATA command */
143 extern uschar *acl_smtp_quit; /* ACL run for QUIT */
144 extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
145 extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
146 extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
147 extern BOOL acl_temp_details; /* TRUE to give details for 4xx error */
148 extern tree_node *acl_var_c; /* ACL connection variables */
149 extern tree_node *acl_var_m; /* ACL messsage variables */
150 extern uschar *acl_verify_message; /* User message for verify failure */
151 extern string_item *acl_warn_logged; /* Logged lines */
152 extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
153 extern uschar *acl_wherenames[]; /* Names for messages */
154 extern BOOL active_local_from_check;/* For adding Sender: (switchable) */
155 extern BOOL active_local_sender_retain; /* For keeping Sender: (switchable) */
156 extern address_item *addr_duplicate; /* Duplicate address list */
157 extern address_item address_defaults; /* Default data for address item */
158 extern uschar *address_file; /* Name of file when delivering to one */
159 extern uschar *address_pipe; /* Pipe command when delivering to one */
160 extern BOOL address_test_mode; /* True for -bt */
161 extern tree_node *addresslist_anchor; /* Tree of defined address lists */
162 extern int addresslist_count; /* Number defined */
163 extern gid_t *admin_groups; /* List of admin groups */
164 extern BOOL admin_user; /* True if caller can do admin */
165 extern BOOL allow_auth_unadvertised;/* As it says */
166 extern BOOL allow_domain_literals; /* As it says */
167 extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
168 extern BOOL allow_unqualified_recipient; /* As it says */
169 extern BOOL allow_unqualified_sender; /* Ditto */
170 extern BOOL allow_utf8_domains; /* For experimenting */
171 extern uschar *authenticated_id; /* ID that was authenticated */
172 extern uschar *authenticated_sender; /* From AUTH on MAIL */
173 extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
174 extern uschar *auth_advertise_hosts; /* Only advertise to these */
175 extern auth_info auths_available[]; /* Vector of available auth mechanisms */
176 extern auth_instance *auths; /* Chain of instantiated auths */
177 extern auth_instance auth_defaults; /* Default values */
178 extern uschar *auth_defer_msg; /* Error message for log */
179 extern uschar *auth_defer_user_msg; /* Error message for user */
180 extern uschar *auth_vars[]; /* $authn variables */
181 extern int auto_thaw; /* Auto-thaw interval */
182 #ifdef WITH_CONTENT_SCAN
183 extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
184 #endif
185
186 extern BOOL background_daemon; /* Set FALSE to keep in foreground */
187 extern uschar *base62_chars; /* Table of base-62 characters */
188 extern uschar *bi_command; /* Command for -bi option */
189 extern uschar *big_buffer; /* Used for various temp things */
190 extern int big_buffer_size; /* Current size (can expand) */
191 #ifdef EXPERIMENTAL_BRIGHTMAIL
192 extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
193 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
194 extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
195 extern uschar *bmi_config_file; /* Brightmail config file */
196 extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
197 extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
198 extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
199 #endif
200 extern uschar *bounce_message_file; /* Template file */
201 extern uschar *bounce_message_text; /* One-liner */
202 extern uschar *bounce_recipient; /* When writing an errmsg */
203 extern BOOL bounce_return_body; /* Include body in returned message */
204 extern BOOL bounce_return_message; /* Include message in bounce */
205 extern int bounce_return_size_limit; /* Max amount to return */
206 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
207 extern int bsmtp_transaction_linecount; /* Start of last transaction */
208
209 extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
210 extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
211 extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
212 extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
213 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
214 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
215 extern int check_log_inodes; /* Minimum for message acceptance */
216 extern int check_log_space; /* Minimum for message acceptance */
217 extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
218 extern int check_spool_inodes; /* Minimum for message acceptance */
219 extern int check_spool_space; /* Minimum for message acceptance */
220 extern int clmacro_count; /* Number of command line macros */
221 extern uschar *clmacros[]; /* Copy of them, for re-exec */
222 extern int connection_max_messages;/* Max down one SMTP connection */
223 extern BOOL config_changed; /* True if -C used */
224 extern FILE *config_file; /* Configuration file */
225 extern uschar *config_filename; /* Configuration file name */
226 #ifdef CONFIGURE_GROUP
227 extern gid_t config_gid; /* Additional group owner */
228 #endif
229 extern int config_lineno; /* Line number */
230 extern uschar *config_main_filelist; /* List of possible config files */
231 extern uschar *config_main_filename; /* File name actually used */
232 #ifdef CONFIGURE_OWNER
233 extern uid_t config_uid; /* Additional owner */
234 #endif
235 extern uschar *continue_hostname; /* Host for continued delivery */
236 extern uschar *continue_host_address; /* IP address for ditto */
237 extern BOOL continue_more; /* Flag more addresses waiting */
238 extern int continue_sequence; /* Sequence num for continued delivery */
239 extern uschar *continue_transport; /* Transport for continued delivery */
240
241 extern uschar *csa_status; /* Client SMTP Authorization result */
242
243 extern BOOL daemon_listen; /* True if listening required */
244 extern uschar *daemon_smtp_port; /* Can be a list of ports */
245 extern int daemon_startup_retries; /* Number of times to retry */
246 extern int daemon_startup_sleep; /* Sleep between retries */
247
248 #ifdef EXPERIMENTAL_DCC
249 extern BOOL dcc_direct_add_header; /* directly add header */
250 extern uschar *dcc_header; /* dcc header */
251 extern uschar *dcc_result; /* dcc result */
252 extern uschar *dccifd_address; /* address of the dccifd daemon */
253 extern uschar *dccifd_options; /* options for the dccifd daemon */
254 #endif
255
256 extern BOOL debug_daemon; /* Debug the daemon process only */
257 extern int debug_fd; /* The fd for debug_file */
258 extern FILE *debug_file; /* Where to write debugging info */
259 extern bit_table debug_options[]; /* Table of debug options */
260 extern int debug_options_count; /* Size of table */
261 extern int delay_warning[]; /* Times between warnings */
262 extern uschar *delay_warning_condition; /* Condition string for warnings */
263 extern BOOL delivery_date_remove; /* Remove delivery-date headers */
264
265 extern uschar *deliver_address_data; /* Arbitrary data for an address */
266 extern int deliver_datafile; /* FD for data part of message */
267 extern uschar *deliver_domain; /* The local domain for delivery */
268 extern uschar *deliver_domain_data; /* From domain lookup */
269 extern uschar *deliver_domain_orig; /* The original local domain for delivery */
270 extern uschar *deliver_domain_parent; /* The parent domain for delivery */
271 extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
272 extern BOOL deliver_firsttime; /* True for first delivery attempt */
273 extern BOOL deliver_force; /* TRUE if delivery was forced */
274 extern BOOL deliver_freeze; /* TRUE if delivery is frozen */
275 extern int deliver_frozen_at; /* Time of freezing */
276 extern uschar *deliver_home; /* Home directory for pipes */
277 extern uschar *deliver_host; /* (First) host for routed local deliveries */
278 /* Remote host for filter */
279 extern uschar *deliver_host_address; /* Address for remote delivery filter */
280 extern uschar *deliver_in_buffer; /* Buffer for copying file */
281 extern ino_t deliver_inode; /* Inode for appendfile */
282 extern uschar *deliver_localpart; /* The local part for delivery */
283 extern uschar *deliver_localpart_data; /* From local part lookup */
284 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
285 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
286 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
287 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
288 extern BOOL deliver_force_thaw; /* TRUE to force thaw in queue run */
289 extern BOOL deliver_manual_thaw; /* TRUE if manually thawed */
290 extern uschar *deliver_out_buffer; /* Buffer for copying file */
291 extern int deliver_queue_load_max; /* Different value for queue running */
292 extern address_item *deliver_recipients; /* Current set of addresses */
293 extern uschar *deliver_selectstring; /* For selecting by recipient */
294 extern BOOL deliver_selectstring_regex; /* String is regex */
295 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
296 extern BOOL deliver_selectstring_sender_regex; /* String is regex */
297 #ifdef WITH_OLD_DEMIME
298 extern int demime_errorlevel; /* Severity of MIME error */
299 extern int demime_ok; /* Nonzero if message has been demimed */
300 extern uschar *demime_reason; /* Reason for broken MIME container */
301 #endif
302 extern BOOL disable_callout_flush; /* Don't flush before callouts */
303 extern BOOL disable_delay_flush; /* Don't flush before "delay" in ACL */
304 #ifdef ENABLE_DISABLE_FSYNC
305 extern BOOL disable_fsync; /* Not for normal use */
306 #endif
307 extern BOOL disable_ipv6; /* Don't do any IPv6 things */
308 extern BOOL disable_logging; /* Disables log writing when TRUE */
309
310 #ifndef DISABLE_DKIM
311 extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
312 extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
313 extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
314 extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
315 extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
316 extern BOOL dkim_collect_input; /* Runtime flag that tracks wether SMTP input is fed to DKIM validation */
317 extern BOOL dkim_disable_verify; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
318 #endif
319
320 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
321 extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
322 extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
323 extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
324 extern int dns_retrans; /* Retransmission time setting */
325 extern int dns_retry; /* Number of retries */
326 extern uschar *dnslist_domain; /* DNS (black) list domain */
327 extern uschar *dnslist_matched; /* DNS (black) list matched key */
328 extern uschar *dnslist_text; /* DNS (black) list text message */
329 extern uschar *dnslist_value; /* DNS (black) list IP address */
330 extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
331 extern int domainlist_count; /* Number defined */
332 extern BOOL dont_deliver; /* TRUE for -N option */
333 extern BOOL dot_ends; /* TRUE if "." ends non-SMTP input */
334
335 /* This option is now a no-opt, retained for compatibility */
336 extern BOOL drop_cr; /* For broken local MUAs */
337
338 extern uschar *dsn_from; /* From: string for DSNs */
339
340 extern BOOL enable_dollar_recipients; /* Make $recipients available */
341 extern int envelope_to_remove; /* Remove envelope_to_headers */
342 extern int errno_quota; /* Quota errno in this OS */
343 extern int error_handling; /* Error handling style */
344 extern uschar *errors_copy; /* For taking copies of errors */
345 extern uschar *errors_reply_to; /* Reply-to for error messages */
346 extern int errors_sender_rc; /* Return after message to sender*/
347 extern gid_t exim_gid; /* To be used with exim_uid */
348 extern BOOL exim_gid_set; /* TRUE if exim_gid set */
349 extern uschar *exim_path; /* Path to exec exim */
350 extern uid_t exim_uid; /* Non-root uid for exim */
351 extern BOOL exim_uid_set; /* TRUE if exim_uid set */
352 extern int expand_forbid; /* RDO flags for forbidding things */
353 extern int expand_nlength[]; /* Lengths of numbered strings */
354 extern int expand_nmax; /* Max numerical value */
355 extern uschar *expand_nstring[]; /* Numbered strings */
356 extern BOOL expand_string_forcedfail; /* TRUE if failure was "expected" */
357 extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
358 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
359
360 extern int fake_response; /* Fake FAIL or DEFER response to data */
361 extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
362 extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
363 extern BOOL filter_running; /* TRUE while running a filter */
364 extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
365 extern int filter_test; /* Filter test type */
366 extern uschar *filter_test_sfile; /* System filter test file */
367 extern uschar *filter_test_ufile; /* User filter test file */
368 extern uschar *filter_thisaddress; /* For address looping */
369 extern int finduser_retries; /* Retry count for getpwnam() */
370 extern uid_t fixed_never_users[]; /* Can't be overridden */
371 #ifdef WITH_OLD_DEMIME
372 extern uschar *found_extension; /* demime acl condition: file extension found */
373 #endif
374 extern uschar *freeze_tell; /* Message on (some) freezings */
375 extern uschar *freeze_tell_config; /* The configured setting */
376 extern uschar *fudged_queue_times; /* For use in test harness */
377
378 extern uschar *gecos_name; /* To be expanded when pattern matches */
379 extern uschar *gecos_pattern; /* Pattern to match */
380 extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
381
382 extern int header_insert_maxlen; /* Max for inserting headers */
383 extern int header_maxsize; /* Max total length for header */
384 extern int header_line_maxsize; /* Max for an individual line */
385 extern header_name header_names[]; /* Table of header names */
386 extern int header_names_size; /* Number of entries */
387 extern BOOL header_rewritten; /* TRUE if header changed by router */
388 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
389 extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
390 extern uschar *helo_lookup_domains; /* If these given, lookup host name */
391 extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
392 extern BOOL helo_verified; /* True if HELO verified */
393 extern BOOL helo_verify_failed; /* True if attempt failed */
394 extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
395 extern uschar *hex_digits; /* Used in several places */
396 extern uschar *hold_domains; /* Hold up deliveries to these */
397 extern BOOL host_find_failed_syntax;/* DNS syntax check failure */
398 extern BOOL host_checking_callout; /* TRUE if real callout wanted */
399 extern uschar *host_data; /* Obtained from lookup in ACL */
400 extern uschar *host_lookup; /* For which IP addresses are always looked up */
401 extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
402 extern BOOL host_lookup_failed; /* TRUE if lookup failed */
403 extern uschar *host_lookup_order; /* Order of host lookup types */
404 extern uschar *host_lookup_msg; /* Text for why it failed */
405 extern int host_number; /* For sharing spools */
406 extern uschar *host_number_string; /* For expanding */
407 extern uschar *host_reject_connection; /* Reject these hosts */
408 extern tree_node *hostlist_anchor; /* Tree of defined host lists */
409 extern int hostlist_count; /* Number defined */
410 extern uschar *hosts_connection_nolog; /* Limits the logging option */
411 extern uschar *hosts_treat_as_local; /* For routing */
412
413 extern int ignore_bounce_errors_after; /* Keep them for this time. */
414 extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
415 extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
416 extern BOOL is_inetd; /* True for inetd calls */
417 extern uschar *iterate_item; /* Item from iterate list */
418
419 extern int journal_fd; /* Fd for journal file */
420
421 extern int keep_malformed; /* Time to keep malformed messages */
422
423 extern uschar *eldap_dn; /* Where LDAP DNs are left */
424 extern int load_average; /* Most recently read load average */
425 extern BOOL local_error_message; /* True if handling one of these */
426 extern BOOL local_from_check; /* For adding Sender: (global value) */
427 extern uschar *local_from_prefix; /* Permitted prefixes */
428 extern uschar *local_from_suffix; /* Permitted suffixes */
429 extern uschar *local_interfaces; /* For forcing specific interfaces */
430 extern uschar *local_scan_data; /* Text returned by local_scan() */
431 extern optionlist local_scan_options[];/* Option list for local_scan() */
432 extern int local_scan_options_count; /* Size of the list */
433 extern int local_scan_timeout; /* Timeout for local_scan() */
434 extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
435 extern gid_t local_user_gid; /* As it says; may be set in routers */
436 extern uid_t local_user_uid; /* As it says; may be set in routers */
437 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
438 extern int localpartlist_count; /* Number defined */
439 extern uschar *log_buffer; /* For constructing log entries */
440 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
441 extern uschar *log_file_path; /* If unset, use default */
442 extern bit_table log_options[]; /* Table of options */
443 extern int log_options_count; /* Size of table */
444 extern int log_reject_target; /* Target log for ACL rejections */
445 extern uschar *log_selector_string; /* As supplied in the config */
446 extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
447 extern BOOL log_testing_mode; /* TRUE in various testing modes */
448 extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
449 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
450 extern uschar *login_sender_address; /* The actual sender address */
451 extern lookup_info **lookup_list; /* Array of pointers to available lookups */
452 extern int lookup_list_count; /* Number of entries in the list */
453 extern int lookup_open_max; /* Max lookup files to cache */
454 extern uschar *lookup_value; /* Value looked up from file */
455
456 extern macro_item *macros; /* Configuration macros */
457 extern uschar *mailstore_basename; /* For mailstore deliveries */
458 #ifdef WITH_CONTENT_SCAN
459 extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
460 #endif
461 extern int max_received_linelength;/* What it says */
462 extern int max_username_length; /* For systems with broken getpwnam() */
463 extern int message_age; /* In seconds */
464 extern uschar *message_body; /* Start of message body for filter */
465 extern uschar *message_body_end; /* End of message body for filter */
466 extern BOOL message_body_newlines; /* FALSE => remove newlines */
467 extern int message_body_size; /* Sic */
468 extern int message_body_visible; /* Amount visible in message_body */
469 extern int message_ended; /* State of message reading and how ended */
470 extern uschar *message_headers; /* When built */
471 extern uschar message_id_option[]; /* -E<message-id> for use as option */
472 extern uschar *message_id_external; /* External form of following */
473 extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
474 extern uschar *message_id_text; /* Expanded to form message_id */
475 extern struct timeval message_id_tv; /* Time used to create last message_id */
476 extern int message_linecount; /* As it says */
477 extern BOOL message_logs; /* TRUE to write message logs */
478 extern int message_size; /* Size of message */
479 extern uschar *message_size_limit; /* As it says */
480 extern uschar message_subdir[]; /* Subdirectory for messages */
481 extern uschar *message_reference; /* Reference for error messages */
482
483 /* MIME ACL expandables */
484 #ifdef WITH_CONTENT_SCAN
485 extern int mime_anomaly_level;
486 extern uschar *mime_anomaly_text;
487 extern uschar *mime_boundary;
488 extern uschar *mime_charset;
489 extern uschar *mime_content_description;
490 extern uschar *mime_content_disposition;
491 extern uschar *mime_content_id;
492 extern unsigned int mime_content_size;
493 extern uschar *mime_content_transfer_encoding;
494 extern uschar *mime_content_type;
495 extern uschar *mime_decoded_filename;
496 extern uschar *mime_filename;
497 extern int mime_is_multipart;
498 extern int mime_is_coverletter;
499 extern int mime_is_rfc822;
500 extern int mime_part_count;
501 #endif
502
503 extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
504
505 extern uid_t *never_users; /* List of uids never to be used */
506 #ifdef WITH_CONTENT_SCAN
507 extern BOOL no_mbox_unspool; /* don't unlink files in /scan directory */
508 #endif
509 extern BOOL no_multiline_responses; /* For broken clients */
510
511 extern optionlist optionlist_auths[]; /* These option lists are made */
512 extern int optionlist_auths_size; /* global so that readconf can */
513 extern optionlist optionlist_routers[]; /* see them for printing out */
514 extern int optionlist_routers_size; /* the options. */
515 extern optionlist optionlist_transports[];
516 extern int optionlist_transports_size;
517
518 extern uid_t original_euid; /* Original effective uid */
519 extern gid_t originator_gid; /* Gid of whoever wrote spool file */
520 extern uschar *originator_login; /* Login of same */
521 extern uschar *originator_name; /* Full name of same */
522 extern uid_t originator_uid; /* Uid of ditto */
523 extern uschar *override_local_interfaces; /* Value of -oX argument */
524 extern uschar *override_pid_file_path; /* Value of -oP argument */
525
526 extern BOOL parse_allow_group; /* Allow group syntax */
527 extern BOOL parse_found_group; /* In the middle of a group */
528 extern uschar *percent_hack_domains; /* Local domains for which '% operates */
529 extern uschar *pid_file_path; /* For writing daemon pids */
530 extern uschar *pipelining_advertise_hosts; /* As it says */
531 extern BOOL pipelining_enable; /* As it says */
532 extern BOOL preserve_message_logs; /* Save msglog files */
533 extern uschar *primary_hostname; /* Primary name of this computer */
534 extern BOOL print_topbitchars; /* Topbit chars are printing chars */
535 extern uschar process_info[]; /* For SIGUSR1 output */
536 extern uschar *process_log_path; /* Alternate path */
537 extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
538 extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
539 extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
540 extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
541
542 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
543 extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
544 extern BOOL queue_2stage; /* Run queue in 2-stage manner */
545 extern uschar *queue_domains; /* Queue these domains */
546 extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
547 extern BOOL queue_run_first_delivery; /* If TRUE, first deliveries only */
548 extern BOOL queue_run_force; /* TRUE to force during queue run */
549 extern BOOL queue_run_local; /* Local deliveries only in queue run */
550 extern BOOL queue_running; /* TRUE for queue running process and */
551 /* immediate children */
552 extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
553 extern int queue_run_pipe; /* Pipe for synchronizing */
554 extern int queue_interval; /* Queue running interval */
555 extern BOOL queue_only; /* TRUE to disable immediate delivery */
556 extern int queue_only_load; /* Max load before auto-queue */
557 extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
558 extern uschar *queue_only_file; /* Queue if file exists/not-exists */
559 extern BOOL queue_only_override; /* Allow override from command line */
560 extern BOOL queue_only_policy; /* ACL or local_scan wants queue_only */
561 extern BOOL queue_run_in_order; /* As opposed to random */
562 extern int queue_run_max; /* Max queue runners */
563 extern BOOL queue_smtp; /* Disable all immediate STMP (-odqs)*/
564 extern uschar *queue_smtp_domains; /* Ditto, for these domains */
565
566 extern unsigned int random_seed; /* Seed for random numbers */
567 extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
568 extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
569 extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
570 extern uschar *raw_active_hostname; /* Pre-expansion */
571 extern uschar *raw_sender; /* Before rewriting */
572 extern uschar **raw_recipients; /* Before rewriting */
573 extern int raw_recipients_count;
574 extern int rcpt_count; /* Count of RCPT commands in a message */
575 extern int rcpt_fail_count; /* Those that got 5xx */
576 extern int rcpt_defer_count; /* Those that got 4xx */
577 extern gid_t real_gid; /* Real gid */
578 extern uid_t real_uid; /* Real user running program */
579 extern BOOL really_exim; /* FALSE in utilities */
580 extern BOOL receive_call_bombout; /* Flag for crashing log */
581 extern int receive_linecount; /* Mainly for BSMTP errors */
582 extern int receive_messagecount; /* Mainly for BSMTP errors */
583 extern int receive_timeout; /* For non-SMTP acceptance */
584 extern int received_count; /* Count of Received: headers */
585 extern uschar *received_for; /* For "for" field */
586 extern uschar *received_header_text; /* Definition of Received: header */
587 extern int received_headers_max; /* Max count of Received: headers */
588 extern int received_time; /* Time the message was received */
589 extern uschar *recipient_data; /* lookup data for recipients */
590 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
591 extern uschar *recipient_verify_failure; /* What went wrong */
592 extern BOOL recipients_discarded; /* By an ACL */
593 extern int recipients_list_max; /* Maximum number fitting in list */
594 extern int recipients_max; /* Max permitted */
595 extern int recipients_max_reject; /* If TRUE, reject whole message */
596 extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
597 extern const pcre *regex_check_dns_names; /* For DNS name checking */
598 extern const pcre *regex_From; /* For recognizing "From_" lines */
599 extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
600 extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
601 extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
602 extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
603 extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
604 #ifdef WHITELIST_D_MACROS
605 extern const pcre *regex_whitelisted_macro; /* For -D macro values */
606 #endif
607 #ifdef WITH_CONTENT_SCAN
608 extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
609 #endif
610 extern int remote_delivery_count; /* Number of remote addresses */
611 extern int remote_max_parallel; /* Maximum parallel delivery */
612 extern uschar *remote_sort_domains; /* Remote domain sorting order */
613 extern retry_config *retries; /* Chain of retry config information */
614 extern int retry_data_expire; /* When to expire retry data */
615 extern int retry_interval_max; /* Absolute maximum */
616 extern int retry_maximum_timeout; /* The maximum timeout */
617 extern uschar *return_path; /* Return path for a message */
618 extern BOOL return_path_remove; /* Remove return-path headers */
619 extern int rewrite_existflags; /* Indicate which headers have rewrites */
620 extern uschar *rfc1413_hosts; /* RFC hosts */
621 extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
622 /* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
623 extern uid_t root_gid; /* The gid for root */
624 extern uid_t root_uid; /* The uid for root */
625 extern router_info routers_available[];/* Vector of available routers */
626 extern router_instance *routers; /* Chain of instantiated routers */
627 extern router_instance router_defaults;/* Default values */
628 extern BOOL running_in_test_harness; /*TRUE when running_status is patched */
629 extern ip_address_item *running_interfaces; /* Host's running interfaces */
630 extern uschar *running_status; /* Flag string for testing */
631 extern int runrc; /* rc from ${run} */
632
633 extern uschar *search_error_message; /* Details of lookup problem */
634 extern BOOL search_find_defer; /* Set TRUE if lookup deferred */
635 extern uschar *self_hostname; /* Self host after routing->directors */
636 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
637 extern uschar *sender_address_data; /* address_data from sender verify */
638 extern BOOL sender_address_forced; /* Set by -f */
639 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
640 extern uschar *sender_data; /* lookup result for senders */
641 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
642 extern uschar *sender_fullhost; /* Sender host name + address */
643 extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
644 extern uschar **sender_host_aliases; /* Points to list of alias names */
645 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
646 extern BOOL sender_host_notsocket; /* Set for -bs and -bS */
647 extern BOOL sender_host_unknown; /* TRUE for -bs and -bS except inetd */
648 extern uschar *sender_ident; /* Sender identity via RFC 1413 */
649 extern BOOL sender_local; /* TRUE for local senders */
650 extern BOOL sender_name_forced; /* Set by -F */
651 extern uschar *sender_rate; /* Sender rate computed by ACL */
652 extern uschar *sender_rate_limit; /* Configured rate limit */
653 extern uschar *sender_rate_period; /* Configured smoothing period */
654 extern uschar *sender_rcvhost; /* Host data for Received: */
655 extern BOOL sender_set_untrusted; /* Sender set by untrusted caller */
656 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
657 extern uschar *sender_verify_failure; /* What went wrong */
658 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
659 extern address_item *sender_verified_failed; /* The one that caused denial */
660 extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
661 extern int sending_port; /* Port of outgoing interface */
662 extern volatile BOOL sigalrm_seen; /* Flag for sigalrm_handler */
663 extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
664 extern int smtp_accept_count; /* Count of connections */
665 extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
666 extern int smtp_accept_max; /* Max SMTP connections */
667 extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
668 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
669 extern int smtp_accept_max_per_connection; /* Max msgs per connection */
670 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
671 extern int smtp_accept_queue; /* Queue after so many connections */
672 extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
673 extern int smtp_accept_reserve; /* Reserve these SMTP connections */
674 extern uschar *smtp_active_hostname; /* Hostname for this message */
675 extern BOOL smtp_authenticated; /* Sending client has authenticated */
676 extern uschar *smtp_banner; /* Banner string (to be expanded) */
677 extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
678 extern int smtp_ch_index; /* Index in smtp_connection_had */
679 extern uschar *smtp_cmd_argument; /* For all SMTP commands */
680 extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
681 extern time_t smtp_connection_start; /* Start time of SMTP connection */
682 extern uschar smtp_connection_had[]; /* Recent SMTP commands */
683 extern int smtp_connect_backlog; /* Max backlog permitted */
684 extern double smtp_delay_mail; /* Current MAIL delay */
685 extern double smtp_delay_rcpt; /* Current RCPT delay */
686 extern BOOL smtp_enforce_sync; /* Enforce sync rules */
687 extern uschar *smtp_etrn_command; /* Command to run */
688 extern BOOL smtp_etrn_serialize; /* Only one at once */
689 extern FILE *smtp_in; /* Incoming SMTP input file */
690 extern int smtp_load_reserve; /* Only from reserved if load > this */
691 extern int smtp_mailcmd_count; /* Count of MAIL commands */
692 extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
693 extern int smtp_max_unknown_commands; /* As it says */
694 extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
695 extern FILE *smtp_out; /* Incoming SMTP output file */
696 extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
697 extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
698 extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
699 extern uschar *smtp_read_error; /* Message for SMTP input error */
700 extern int smtp_receive_timeout; /* Applies to each received line */
701 extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
702 extern BOOL smtp_return_error_details; /* TRUE to return full info */
703 extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
704 extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
705 extern int smtp_rlm_limit; /* Max delay */
706 extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
707 extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
708 extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
709 extern int smtp_rlr_limit; /* Max delay */
710 extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
711 extern BOOL smtp_use_pipelining; /* Global for passed connections */
712 extern BOOL smtp_use_size; /* Global for passed connections */
713
714 #ifdef WITH_CONTENT_SCAN
715 extern uschar *spamd_address; /* address for the spamassassin daemon */
716 extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
717 extern uschar *spam_report; /* the spamd report (multiline) */
718 extern uschar *spam_score; /* the spam score (float) */
719 extern uschar *spam_score_int; /* spam_score * 10 (int) */
720 #endif
721 #ifdef EXPERIMENTAL_SPF
722 extern uschar *spf_guess; /* spf best-guess record */
723 extern uschar *spf_header_comment; /* spf header comment */
724 extern uschar *spf_received; /* Received-SPF: header */
725 extern uschar *spf_result; /* spf result in string form */
726 extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
727 #endif
728 extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
729 extern uschar *spool_directory; /* Name of spool directory */
730 #ifdef EXPERIMENTAL_SRS
731 extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
732 extern uschar *srs_db_address; /* SRS db address */
733 extern uschar *srs_db_key; /* SRS db key */
734 extern int srs_hashlength; /* SRS hash length */
735 extern int srs_hashmin; /* SRS minimum hash length */
736 extern int srs_maxage; /* SRS max age */
737 extern uschar *srs_orig_sender; /* SRS original sender */
738 extern uschar *srs_orig_recipient; /* SRS original recipient */
739 extern uschar *srs_recipient; /* SRS recipient */
740 extern uschar *srs_secrets; /* SRS secrets list */
741 extern uschar *srs_status; /* SRS staus */
742 extern BOOL srs_usehash; /* SRS use hash flag */
743 extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
744 #endif
745 extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
746 extern int string_datestamp_offset;/* After insertion by string_format */
747 extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
748 extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
749 extern uschar *submission_domain; /* Domain for submission mode */
750 extern BOOL submission_mode; /* Can be forced from ACL */
751 extern uschar *submission_name; /* User name set from ACL */
752 extern BOOL suppress_local_fixups; /* Can be forced from ACL */
753 extern BOOL synchronous_delivery; /* TRUE if -odi is set */
754 extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
755 extern int syslog_facility; /* As defined by Syslog.h */
756 extern uschar *syslog_processname; /* 'ident' param to openlog() */
757 extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
758 extern uschar *system_filter; /* Name of system filter file */
759
760 extern uschar *system_filter_directory_transport; /* Transports for the */
761 extern uschar *system_filter_file_transport; /* system filter */
762 extern uschar *system_filter_pipe_transport;
763 extern uschar *system_filter_reply_transport;
764
765 extern gid_t system_filter_gid; /* Gid for running system filter */
766 extern BOOL system_filter_gid_set; /* TRUE if gid set */
767 extern uid_t system_filter_uid; /* Uid for running system filter */
768 extern BOOL system_filter_uid_set; /* TRUE if uid set */
769 extern BOOL system_filtering; /* TRUE when running system filter */
770
771 extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
772 #ifdef USE_TCP_WRAPPERS
773 extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
774 #endif
775 extern int test_harness_load_avg; /* For use when testing */
776 extern int thismessage_size_limit; /* Limit for this message */
777 extern int timeout_frozen_after; /* Max time to keep frozen messages */
778 extern BOOL timestamps_utc; /* Use UTC for all times */
779 extern int transport_count; /* Count of bytes transported */
780 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
781 extern int transport_filter_timeout; /* Timeout for same */
782 extern BOOL transport_filter_timed_out; /* True if it did */
783
784 extern transport_info transports_available[]; /* Vector of available transports */
785 extern transport_instance *transports; /* Chain of instantiated transports */
786 extern transport_instance transport_defaults; /* Default values */
787
788 extern int transport_write_timeout;/* Set to time out individual writes */
789
790 extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
791 extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
792 extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
793 extern tree_node *tree_unusable; /* Tree of unusable addresses */
794
795 extern BOOL trusted_caller; /* Caller is trusted */
796 extern BOOL trusted_config; /* Configuration file is trusted */
797 extern gid_t *trusted_groups; /* List of trusted groups */
798 extern uid_t *trusted_users; /* List of trusted users */
799 extern uschar *timezone_string; /* Required timezone setting */
800
801 extern uschar *unknown_login; /* To use when login id unknown */
802 extern uschar *unknown_username; /* Ditto */
803 extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
804 extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
805 extern uschar *uucp_from_sender; /* For building the sender */
806
807 extern uschar *warn_message_file; /* Template for warning messages */
808 extern uschar *warnmsg_delay; /* String form of delay time */
809 extern uschar *warnmsg_recipients; /* Recipients of warning message */
810 extern BOOL write_rejectlog; /* Control of reject logging */
811
812 extern uschar *version_copyright; /* Copyright notice */
813 extern uschar *version_date; /* Date of compilation */
814 extern uschar *version_cnumber; /* Compile number */
815 extern uschar *version_string; /* Version string */
816
817 extern int warning_count; /* Delay warnings sent for this msg */
818
819 /* End of globals.h */
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