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TLS: variables $tls_(in,out)_tlsver
[exim.git] / src / src / globals.h
CommitLineData
059ec3d9
PH		 1/*************************************************
2* Exim - an Internet mail transport agent *
3*************************************************/
4
f9ba5e22 5/* Copyright (c) University of Cambridge 1995 - 2018 */
059ec3d9
PH		 6/* See the file NOTICE for conditions of use and distribution. */
7
8/* Almost all the global variables are defined together in this one header, so
9that they are easy to find. However, those that are visible during the
10compilation of the local_scan() function are defined separately in the
11local_scan.h header file. */
12
13/* First put any specials that are required for some operating systems. */
14
15#ifdef NEED_H_ERRNO
16extern int h_errno;
17#endif
18
cd59ab18
PP		 19/* We need to be careful about width of int and atomicity in signal handlers,
20especially with the rise of 64-bit systems breaking older assumptions. But
21sig_atomic_t comes from signal.h so can't go into mytypes.h without including
22signal support in local_scan, which seems precipitous. */
23typedef volatile sig_atomic_t SIGNAL_BOOL;
24
059ec3d9
PH		 25/* Now things that are present only when configured. */
26
27#ifdef EXIM_PERL
28extern uschar *opt_perl_startup; /* Startup code for Perl interpreter */
29extern BOOL opt_perl_at_start; /* Start Perl interpreter at start */
30extern BOOL opt_perl_started; /* Set once interpreter started */
2f680c0c 31extern BOOL opt_perl_taintmode; /* Enable taint mode in Perl */
059ec3d9
PH		 32#endif
33
1a46a8c5
PH		 34#ifdef EXPAND_DLFUNC
35extern tree_node *dlobj_anchor; /* Tree of dynamically-loaded objects */
36#endif
37
059ec3d9
PH		 38#ifdef LOOKUP_IBASE
39extern uschar *ibase_servers;
40#endif
41
42#ifdef LOOKUP_LDAP
bc19a55b
PP		 43extern uschar *eldap_ca_cert_dir; /* Directory with CA certificates */
44extern uschar *eldap_ca_cert_file; /* CA certificate file */
45extern uschar *eldap_cert_file; /* Certificate file */
46extern uschar *eldap_cert_key; /* Certificate key file */
47extern uschar *eldap_cipher_suite; /* Allowed cipher suite */
059ec3d9 48extern uschar *eldap_default_servers; /* List of default servers */
bc19a55b
PP		 49extern uschar *eldap_require_cert; /* Peer certificate checking strategy */
50extern BOOL eldap_start_tls; /* Use STARTTLS */
059ec3d9
PH		 51extern int eldap_version; /* LDAP version */
52#endif
53
54#ifdef LOOKUP_MYSQL
55extern uschar *mysql_servers; /* List of servers and connect info */
56#endif
57
58#ifdef LOOKUP_ORACLE
59extern uschar *oracle_servers; /* List of servers and connect info */
60#endif
61
62#ifdef LOOKUP_PGSQL
63extern uschar *pgsql_servers; /* List of servers and connect info */
64#endif
65
de78e2d5 66#ifdef LOOKUP_REDIS
9bdd29ad
TL		 67extern uschar *redis_servers; /* List of servers and connect info */
68#endif
69
31480e42
PH		 70#ifdef LOOKUP_SQLITE
71extern int sqlite_lock_timeout; /* Internal lock waiting timeout */
72#endif
73
059ec3d9
PH		 74#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
75extern BOOL move_frozen_messages; /* Get them out of the normal directory */
76#endif
77
78/* These variables are outside the #ifdef because it keeps the code less
79cluttered in several places (e.g. during logging) if we can always refer to
80them. Also, the tls_ variables are now always visible. */
81
817d9f57 82typedef struct {
74f1a423 83 client_conn_ctx active; /* fd/socket when in a TLS session, and ptr to TLS context */
817d9f57
JH		 84 int bits; /* bits used in TLS session */
85 BOOL certificate_verified; /* Client certificate verified */
c0635b6d 86#ifdef SUPPORT_DANE
53a7196b 87 BOOL dane_verified; /* ... via DANE */
594706ea 88 int tlsa_usage; /* TLSA record(s) usage */
53a7196b 89#endif
817d9f57 90 uschar *cipher; /* Cipher used */
f1be21cf 91 const uschar *cipher_stdname; /* Cipher used, RFC version */
5b195d6b 92 const uschar *ver; /* TLS version */
f1be21cf 93
817d9f57
JH		 94 BOOL on_connect; /* For older MTAs that don't STARTTLS */
95 uschar *on_connect_ports; /* Ports always tls-on-connect */
9d1c15ef
JH		 96 void *ourcert; /* Certificate we presented, binary */
97 void *peercert; /* Certificate of peer, binary */
817d9f57 98 uschar *peerdn; /* DN from peer */
817d9f57 99 uschar *sni; /* Server Name Indication */
44662487
JH		 100 enum {
101 OCSP_NOT_REQ=0, /* not requested */
102 OCSP_NOT_RESP, /* no response to request */
018058b2
JH		 103 OCSP_VFY_NOT_TRIED, /* response not verified */
104 OCSP_FAILED, /* verify failed */
44662487
JH		 105 OCSP_VFIED /* verified */
106 } ocsp; /* Stapled OCSP status */
b10c87b3
JH		 107#ifdef EXPERIMENTAL_TLS_RESUME
108 unsigned resumption; /* Session resumption */
109 BOOL host_resumable:1;
110 BOOL ticket_received:1;
111#endif
4a1bd6b9 112 BOOL verify_override:1; /* certificate_verified only due to tls_try_verify_hosts */
817d9f57
JH		 113} tls_support;
114extern tls_support tls_in;
115extern tls_support tls_out;
059ec3d9 116
01603eec 117#ifndef DISABLE_TLS
e6060e2c 118extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
2519e60d 119extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
77bb000f 120extern uschar *openssl_options; /* OpenSSL compatibility options */
059ec3d9 121extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
059ec3d9 122extern uschar *tls_certificate; /* Certificate file */
44bbabb5 123extern uschar *tls_channelbinding_b64; /* string of base64 channel binding */
059ec3d9 124extern uschar *tls_crl; /* CRL File */
3375e053 125extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
059ec3d9 126extern uschar *tls_dhparam; /* DH param file */
10ca4f1c 127extern uschar *tls_eccurve; /* EC curve */
23f3dc67 128# ifndef DISABLE_OCSP
3f7eeb86 129extern uschar *tls_ocsp_file; /* OCSP stapling proof file */
23f3dc67 130# endif
059ec3d9
PH		 131extern uschar *tls_privatekey; /* Private key file */
132extern BOOL tls_remember_esmtp; /* For YAEB */
133extern uschar *tls_require_ciphers; /* So some can be avoided */
b10c87b3
JH		 134# ifdef EXPERIMENTAL_TLS_RESUME
135extern uschar *tls_resumption_hosts; /* TLS session resumption */
136# endif
059ec3d9
PH		 137extern uschar *tls_try_verify_hosts; /* Optional client verification */
138extern uschar *tls_verify_certificates;/* Path for certificates to check */
139extern uschar *tls_verify_hosts; /* Mandatory client verification */
140#endif
23f3dc67 141extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
059ec3d9 142
6c1c3d1d
WB		 143extern uschar *dsn_envid; /* DSN envid string */
144extern int dsn_ret; /* DSN ret type*/
145extern const pcre *regex_DSN; /* For recognizing DSN settings */
6c1c3d1d 146extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
059ec3d9
PH		 147
148/* Input-reading functions for messages, so we can use special ones for
149incoming TCP/IP. */
150
bd8fbe36 151extern int (*lwr_receive_getc)(unsigned);
0d81dabc 152extern uschar * (*lwr_receive_getbuf)(unsigned *);
7e3ce68e 153extern int (*lwr_receive_ungetc)(int);
bd8fbe36 154extern int (*receive_getc)(unsigned);
0d81dabc 155extern uschar * (*receive_getbuf)(unsigned *);
584e96c6 156extern void (*receive_get_cache)(void);
059ec3d9
PH		 157extern int (*receive_ungetc)(int);
158extern int (*receive_feof)(void);
159extern int (*receive_ferror)(void);
58eb016e 160extern BOOL (*receive_smtp_buffered)(void);
059ec3d9
PH		 161
162
163/* For clearing, saving, restoring address expansion variables. We have to have
164the size of this vector set explicitly, because it is referenced from more than
165one module. */
166
55414b25 167extern const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
059ec3d9 168
8768d548
JH		 169/* Flags for which we don't need an address ever so can use a bitfield */
170
171extern struct global_flags {
172 BOOL acl_temp_details :1; /* TRUE to give details for 4xx error */
173 BOOL active_local_from_check :1; /* For adding Sender: (switchable) */
174 BOOL active_local_sender_retain :1; /* For keeping Sender: (switchable) */
175 BOOL address_test_mode :1; /* True for -bt */
176 BOOL admin_user :1; /* True if caller can do admin */
177 BOOL allow_auth_unadvertised :1; /* As it says */
178 BOOL allow_unqualified_recipient :1; /* For local messages */ /* As it says */
179 BOOL allow_unqualified_sender :1; /* Reset for SMTP */ /* Ditto */
180 BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
181
182 BOOL background_daemon :1; /* Set FALSE to keep in foreground */
183
184 BOOL chunking_offered :1;
185 BOOL config_changed :1; /* True if -C used */
186 BOOL continue_more :1; /* Flag more addresses waiting */
187
188 BOOL daemon_listen :1; /* True if listening required */
189 BOOL debug_daemon :1; /* Debug the daemon process only */
190 BOOL deliver_firsttime :1; /* True for first delivery attempt */
191 BOOL deliver_force :1; /* TRUE if delivery was forced */
192 BOOL deliver_freeze :1; /* TRUE if delivery is frozen */
193 BOOL deliver_force_thaw :1; /* TRUE to force thaw in queue run */
194 BOOL deliver_manual_thaw :1; /* TRUE if manually thawed */
195 BOOL deliver_selectstring_regex :1; /* String is regex */
196 BOOL deliver_selectstring_sender_regex :1; /* String is regex */
197 BOOL disable_callout_flush :1; /* Don't flush before callouts */
198 BOOL disable_delay_flush :1; /* Don't flush before "delay" in ACL */
199 BOOL disable_logging :1; /* Disables log writing when TRUE */
200#ifndef DISABLE_DKIM
201 BOOL dkim_disable_verify :1; /* Set via ACL control statement. When set, DKIM verification is disabled for the current message */
d85cdeb5 202 BOOL dkim_init_done :1; /* lazy-init status */
8768d548 203#endif
1a2e76e1 204#ifdef SUPPORT_DMARC
8768d548
JH		 205 BOOL dmarc_has_been_checked :1; /* Global variable to check if test has been called yet */
206 BOOL dmarc_disable_verify :1; /* Set via ACL control statement. When set, DMARC verification is disabled for the current message */
207 BOOL dmarc_enable_forensic :1; /* Set via ACL control statement. When set, DMARC forensic reports are enabled for the current message */
208#endif
209 BOOL dont_deliver :1; /* TRUE for -N option */
210 BOOL dot_ends :1; /* TRUE if "." ends non-SMTP input */
211
212 BOOL enable_dollar_recipients :1; /* Make $recipients available */
213 BOOL expand_string_forcedfail :1; /* TRUE if failure was "expected" */
214
215 BOOL filter_running :1; /* TRUE while running a filter */
216
217 BOOL header_rewritten :1; /* TRUE if header changed by router */
218 BOOL helo_verified :1; /* True if HELO verified */
219 BOOL helo_verify_failed :1; /* True if attempt failed */
220 BOOL host_checking_callout :1; /* TRUE if real callout wanted */
221 BOOL host_find_failed_syntax :1; /* DNS syntax check failure */
222
223 BOOL inetd_wait_mode :1; /* Whether running in inetd wait mode */
224 BOOL is_inetd :1; /* True for inetd calls */
225
226 BOOL local_error_message :1; /* True if handling one of these */
227 BOOL log_testing_mode :1; /* TRUE in various testing modes */
228
229#ifdef WITH_CONTENT_SCAN
230 BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
231#endif
232 BOOL no_multiline_responses :1; /* For broken clients */
233
234 BOOL parse_allow_group :1; /* Allow group syntax */
235 BOOL parse_found_group :1; /* In the middle of a group */
236 BOOL pipelining_enable :1; /* As it says */
237#if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
238 BOOL proxy_session_failed :1; /* TRUE if required proxy negotiation failed */
239#endif
240
241 BOOL queue_2stage :1; /* Run queue in 2-stage manner */
242 BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
243 BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
244 BOOL queue_run_force :1; /* TRUE to force during queue run */
245 BOOL queue_run_local :1; /* Local deliveries only in queue run */
246 BOOL queue_running :1; /* TRUE for queue running process and */
247 BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
248
249 BOOL really_exim :1; /* FALSE in utilities */
250 BOOL receive_call_bombout :1; /* Flag for crashing log */
251 BOOL recipients_discarded :1; /* By an ACL */
252 BOOL running_in_test_harness :1; /*TRUE when running_status is patched */
253
254 BOOL search_find_defer :1; /* Set TRUE if lookup deferred */
255 BOOL sender_address_forced :1; /* Set by -f */
256 BOOL sender_host_notsocket :1; /* Set for -bs and -bS */
257 BOOL sender_host_unknown :1; /* TRUE for -bs and -bS except inetd */
258 BOOL sender_local :1; /* TRUE for local senders */
259 BOOL sender_name_forced :1; /* Set by -F */
260 BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
261 BOOL smtp_authenticated :1; /* Sending client has authenticated */
81344b40 262#ifndef DISABLE_PIPE_CONNECT
ee8b8090
JH		 263 BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
264 BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
265 BOOL smtp_in_early_pipe_used :1; /* client did send early data */
266#endif
8768d548
JH		 267 BOOL smtp_in_pipelining_advertised :1; /* server advertised PIPELINING */
268 BOOL smtp_in_pipelining_used :1; /* server noted client using PIPELINING */
269 BOOL spool_file_wireformat :1; /* current -D file has CRLF rather than NL */
270 BOOL submission_mode :1; /* Can be forced from ACL */
271 BOOL suppress_local_fixups :1; /* Can be forced from ACL */
272 BOOL suppress_local_fixups_default :1; /* former is reset to this; override with -G */
273 BOOL synchronous_delivery :1; /* TRUE if -odi is set */
274 BOOL system_filtering :1; /* TRUE when running system filter */
275
276 BOOL tcp_fastopen_ok :1; /* appears to be supported by kernel */
277 BOOL tcp_in_fastopen :1; /* conn usefully used fastopen */
ee8b8090 278 BOOL tcp_in_fastopen_data :1; /* fastopen carried data */
8768d548
JH		 279 BOOL tcp_in_fastopen_logged :1; /* one-time logging */
280 BOOL tcp_out_fastopen_logged :1; /* one-time logging */
281 BOOL timestamps_utc :1; /* Use UTC for all times */
282 BOOL transport_filter_timed_out :1; /* True if it did */
283 BOOL trusted_caller :1; /* Caller is trusted */
284 BOOL trusted_config :1; /* Configuration file is trusted */
285} f;
286
287
059ec3d9
PH		 288/* General global variables */
289
290extern BOOL accept_8bitmime; /* Allow *BITMIME incoming */
bc3c7bb7 291extern uschar *add_environment; /* List of environment variables to add */
71fafd95 292extern header_line *acl_added_headers; /* Headers added by an ACL */
059ec3d9 293extern tree_node *acl_anchor; /* Tree of named ACLs */
525239c1
JH		 294extern uschar *acl_arg[9]; /* Argument to ACL call */
295extern int acl_narg; /* Number of arguments to ACL call */
e1d04f48 296extern int acl_level; /* Nesting depth and debug indent */
059ec3d9 297extern uschar *acl_not_smtp; /* ACL run for non-SMTP messages */
54cdb463
PH		 298#ifdef WITH_CONTENT_SCAN
299extern uschar *acl_not_smtp_mime; /* For MIME parts of ditto */
300#endif
45b91596 301extern uschar *acl_not_smtp_start; /* ACL run at the beginning of a non-SMTP session */
e7568d51 302extern uschar *acl_removed_headers; /* Headers deleted by an ACL */
059ec3d9
PH		 303extern uschar *acl_smtp_auth; /* ACL run for AUTH */
304extern uschar *acl_smtp_connect; /* ACL run on SMTP connection */
305extern uschar *acl_smtp_data; /* ACL run after DATA received */
8ccd00b1 306#ifndef DISABLE_PRDR
fd98a5c6
JH		 307extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
308const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
309#endif
80a47a2c
TK		 310#ifndef DISABLE_DKIM
311extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
312#endif
059ec3d9
PH		 313extern uschar *acl_smtp_etrn; /* ACL run for ETRN */
314extern uschar *acl_smtp_expn; /* ACL run for EXPN */
315extern uschar *acl_smtp_helo; /* ACL run for HELO/EHLO */
316extern uschar *acl_smtp_mail; /* ACL run for MAIL */
317extern uschar *acl_smtp_mailauth; /* ACL run for MAIL AUTH */
8523533c
TK		 318#ifdef WITH_CONTENT_SCAN
319extern uschar *acl_smtp_mime; /* ACL run after DATA, before acl_smtp_data, for each MIME part */
320#endif
8f128379 321extern uschar *acl_smtp_notquit; /* ACL run for disconnects */
059ec3d9
PH		 322extern uschar *acl_smtp_predata; /* ACL run for DATA command */
323extern uschar *acl_smtp_quit; /* ACL run for QUIT */
324extern uschar *acl_smtp_rcpt; /* ACL run for RCPT */
325extern uschar *acl_smtp_starttls; /* ACL run for STARTTLS */
326extern uschar *acl_smtp_vrfy; /* ACL run for VRFY */
38a0a95f 327extern tree_node *acl_var_c; /* ACL connection variables */
85ffcba6 328extern tree_node *acl_var_m; /* ACL message variables */
059ec3d9 329extern uschar *acl_verify_message; /* User message for verify failure */
059ec3d9 330extern string_item *acl_warn_logged; /* Logged lines */
a5bd321b 331extern uschar *acl_wherecodes[]; /* Response codes for ACL fails */
059ec3d9
PH		 332extern uschar *acl_wherenames[]; /* Names for messages */
333extern address_item *addr_duplicate; /* Duplicate address list */
334extern address_item address_defaults; /* Default data for address item */
335extern uschar *address_file; /* Name of file when delivering to one */
336extern uschar *address_pipe; /* Pipe command when delivering to one */
059ec3d9
PH		 337extern tree_node *addresslist_anchor; /* Tree of defined address lists */
338extern int addresslist_count; /* Number defined */
339extern gid_t *admin_groups; /* List of admin groups */
059ec3d9
PH		 340extern BOOL allow_domain_literals; /* As it says */
341extern BOOL allow_mx_to_ip; /* Allow MX records to -> ip address */
617d3932
JH		 342#ifdef EXPERIMENTAL_ARC
343struct arc_set *arc_received; /* highest ARC instance evaluation struct */
344extern int arc_received_instance; /* highest ARC instance number in headers */
345extern int arc_oldest_pass; /* lowest passing instance number in headers */
346extern const uschar *arc_state; /* verification state */
93c931f8 347extern const uschar *arc_state_reason;
617d3932 348#endif
059ec3d9 349extern BOOL allow_utf8_domains; /* For experimenting */
2d07a215 350extern uschar *authenticated_fail_id; /* ID that failed authentication */
059ec3d9
PH		 351extern uschar *authenticated_id; /* ID that was authenticated */
352extern uschar *authenticated_sender; /* From AUTH on MAIL */
353extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
354extern uschar *auth_advertise_hosts; /* Only advertise to these */
355extern auth_info auths_available[]; /* Vector of available auth mechanisms */
356extern auth_instance *auths; /* Chain of instantiated auths */
357extern auth_instance auth_defaults; /* Default values */
358extern uschar *auth_defer_msg; /* Error message for log */
359extern uschar *auth_defer_user_msg; /* Error message for user */
f78eb7c6 360extern uschar *auth_vars[]; /* $authn variables */
059ec3d9 361extern int auto_thaw; /* Auto-thaw interval */
8523533c 362#ifdef WITH_CONTENT_SCAN
8768d548 363extern int av_failed; /* TRUE if the AV process failed */
8523533c
TK		 364extern uschar *av_scanner; /* AntiVirus scanner to use for the malware condition */
365#endif
059ec3d9 366
059ec3d9
PH		 367extern uschar *base62_chars; /* Table of base-62 characters */
368extern uschar *bi_command; /* Command for -bi option */
369extern uschar *big_buffer; /* Used for various temp things */
370extern int big_buffer_size; /* Current size (can expand) */
8523533c
TK		 371#ifdef EXPERIMENTAL_BRIGHTMAIL
372extern uschar *bmi_alt_location; /* expansion variable that contains the alternate location for the rcpt (available during routing) */
373extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
374extern uschar *bmi_base64_verdict; /* expansion variable with base-64 encoded verdict string (available during routing) */
375extern uschar *bmi_config_file; /* Brightmail config file */
376extern int bmi_deliver; /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
377extern int bmi_run; /* Flag that determines if message should be run through Brightmail server */
378extern uschar *bmi_verdicts; /* BASE64-encoded verdicts with recipient lists */
379#endif
32b8ce41 380extern int bsmtp_transaction_linecount; /* Start of last transaction */
939c3e34 381extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
059ec3d9
PH		 382extern uschar *bounce_message_file; /* Template file */
383extern uschar *bounce_message_text; /* One-liner */
384extern uschar *bounce_recipient; /* When writing an errmsg */
385extern BOOL bounce_return_body; /* Include body in returned message */
62b7cd08 386extern int bounce_return_linesize_limit; /* Max line length in return */
059ec3d9
PH		 387extern BOOL bounce_return_message; /* Include message in bounce */
388extern int bounce_return_size_limit; /* Max amount to return */
389extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
059ec3d9 390
055e2cb4 391extern uschar *callout_address; /* Address used for a malware/spamd/verify etc. callout */
059ec3d9
PH		 392extern int callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
393extern int callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
394extern int callout_cache_positive_expire; /* Time for positive callout cache records to expire */
395extern int callout_cache_negative_expire; /* Time for negative callout cache records to expire */
396extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
397extern uschar *check_dns_names_pattern;/* Regex for syntax check */
398extern int check_log_inodes; /* Minimum for message acceptance */
a45431fa 399extern int_eximarith_t check_log_space; /* Minimum for message acceptance */
a0d6ba8a 400extern BOOL check_rfc2047_length; /* Check RFC 2047 encoded string length */
059ec3d9 401extern int check_spool_inodes; /* Minimum for message acceptance */
a45431fa 402extern int_eximarith_t check_spool_space; /* Minimum for message acceptance */
aa368db3 403extern uschar *chunking_advertise_hosts; /* RFC 3030 CHUNKING */
18481de3 404extern unsigned chunking_datasize;
7e3ce68e 405extern unsigned chunking_data_left;
18481de3 406extern chunking_state_t chunking_state;
c8e2fc1e
JH		 407extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
408extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
409extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
059ec3d9
PH		 410extern int clmacro_count; /* Number of command line macros */
411extern uschar *clmacros[]; /* Copy of them, for re-exec */
f33875c3 412extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
059ec3d9 413extern int connection_max_messages;/* Max down one SMTP connection */
059ec3d9 414extern FILE *config_file; /* Configuration file */
18d6b513 415extern const uschar *config_filename; /* Configuration file name */
35edf2ff 416extern gid_t config_gid; /* Additional group owner */
059ec3d9
PH		 417extern int config_lineno; /* Line number */
418extern uschar *config_main_filelist; /* List of possible config files */
419extern uschar *config_main_filename; /* File name actually used */
98b8312f 420extern uschar *config_main_directory; /* Directory where the main config file was found */
059ec3d9 421extern uid_t config_uid; /* Additional owner */
5013d912 422extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
059ec3d9
PH		 423extern uschar *continue_hostname; /* Host for continued delivery */
424extern uschar *continue_host_address; /* IP address for ditto */
059ec3d9
PH		 425extern int continue_sequence; /* Sequence num for continued delivery */
426extern uschar *continue_transport; /* Transport for continued delivery */
427
e5a9dba6 428extern uschar *csa_status; /* Client SMTP Authorization result */
5032d1cf
JH		 429
430typedef struct {
57cc2785 431 unsigned callout_hold_only:1; /* Conn is only for verify callout */
ff5929e3 432 unsigned delivery:1; /* When to attempt */
4c04137d 433 unsigned defer_pass:1; /* Pass 4xx to caller rather than spooling */
57cc2785 434 unsigned is_tls:1; /* Conn has TLS active */
74f1a423 435 client_conn_ctx cctx; /* Open connection */
5032d1cf 436 int nrcpt; /* Count of addresses */
57cc2785 437 uschar * transport; /* Name of transport */
5032d1cf 438 uschar * interface; /* (address of) */
57cc2785
JH		 439 uschar * snd_ip; /* sending_ip_address */
440 int snd_port; /* sending_port */
441 unsigned peer_options; /* smtp_peer_options */
5032d1cf
JH		 442 host_item host; /* Host used */
443 address_item addr; /* (Chain of) addresses */
444} cut_t;
445extern cut_t cutthrough; /* Deliver-concurrently */
e5a9dba6 446
059ec3d9 447extern uschar *daemon_smtp_port; /* Can be a list of ports */
4aee0225
PH		 448extern int daemon_startup_retries; /* Number of times to retry */
449extern int daemon_startup_sleep; /* Sleep between retries */
6a8f9482
TK		 450
451#ifdef EXPERIMENTAL_DCC
452extern BOOL dcc_direct_add_header; /* directly add header */
453extern uschar *dcc_header; /* dcc header */
454extern uschar *dcc_result; /* dcc result */
455extern uschar *dccifd_address; /* address of the dccifd daemon */
456extern uschar *dccifd_options; /* options for the dccifd daemon */
457#endif
458
059ec3d9
PH		 459extern int debug_fd; /* The fd for debug_file */
460extern FILE *debug_file; /* Where to write debugging info */
6c6d6e48 461extern int debug_notall[]; /* Debug options excluded from +all */
059ec3d9
PH		 462extern bit_table debug_options[]; /* Table of debug options */
463extern int debug_options_count; /* Size of table */
64073d9c 464extern BOOL debug_store; /* Do extra checks on store_reset */
059ec3d9
PH		 465extern int delay_warning[]; /* Times between warnings */
466extern uschar *delay_warning_condition; /* Condition string for warnings */
467extern BOOL delivery_date_remove; /* Remove delivery-date headers */
468
469extern uschar *deliver_address_data; /* Arbitrary data for an address */
470extern int deliver_datafile; /* FD for data part of message */
55414b25 471extern const uschar *deliver_domain; /* The local domain for delivery */
059ec3d9 472extern uschar *deliver_domain_data; /* From domain lookup */
55414b25
JH		 473extern const uschar *deliver_domain_orig; /* The original local domain for delivery */
474extern const uschar *deliver_domain_parent; /* The parent domain for delivery */
059ec3d9 475extern BOOL deliver_drop_privilege; /* TRUE for unprivileged delivery */
19050083 476extern time_t deliver_frozen_at; /* Time of freezing */
059ec3d9 477extern uschar *deliver_home; /* Home directory for pipes */
55414b25 478extern const uschar *deliver_host; /* (First) host for routed local deliveries */
059ec3d9 479 /* Remote host for filter */
55414b25 480extern const uschar *deliver_host_address; /* Address for remote delivery filter */
a7538db1 481extern int deliver_host_port; /* Address for remote delivery filter */
059ec3d9
PH		 482extern uschar *deliver_in_buffer; /* Buffer for copying file */
483extern ino_t deliver_inode; /* Inode for appendfile */
484extern uschar *deliver_localpart; /* The local part for delivery */
485extern uschar *deliver_localpart_data; /* From local part lookup */
486extern uschar *deliver_localpart_orig; /* The original local part for delivery */
487extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
488extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
489extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
059ec3d9
PH		 490extern uschar *deliver_out_buffer; /* Buffer for copying file */
491extern int deliver_queue_load_max; /* Different value for queue running */
492extern address_item *deliver_recipients; /* Current set of addresses */
493extern uschar *deliver_selectstring; /* For selecting by recipient */
059ec3d9 494extern uschar *deliver_selectstring_sender; /* For selecting by sender */
54fc8428
PH		 495#ifdef ENABLE_DISABLE_FSYNC
496extern BOOL disable_fsync; /* Not for normal use */
497#endif
7e66e54d 498extern BOOL disable_ipv6; /* Don't do any IPv6 things */
059ec3d9 499
80a47a2c 500#ifndef DISABLE_DKIM
aded2255 501extern unsigned dkim_collect_input; /* Runtime count of dkim signtures; tracks whether SMTP input is fed to DKIM validation */
2df588c9 502extern uschar *dkim_cur_signer; /* Expansion variable, holds the current "signer" domain or identity during a acl_smtp_dkim run */
abe1010c 503extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
b4757e36 504extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
9e5d6b55 505extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
80a47a2c
TK		 506extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
507extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
042e558f
JH		 508extern uschar *dkim_verify_hashes; /* Preference order for signatures */
509extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
510extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
2c47372f 511extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
80a47a2c 512extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
a79d8834
JH		 513extern uschar *dkim_verify_status; /* result for this signature */
514extern uschar *dkim_verify_reason; /* result for this signature */
f7572e5a 515#endif
1a2e76e1 516#ifdef SUPPORT_DMARC
8c8b8274 517extern uschar *dmarc_domain_policy; /* Expansion for declared policy of used domain */
4840604e
TL		 518extern uschar *dmarc_forensic_sender; /* Set sender address for forensic reports */
519extern uschar *dmarc_history_file; /* Expansion variable, file to store dmarc results */
520extern uschar *dmarc_status; /* Expansion variable, one word value */
521extern uschar *dmarc_status_text; /* Expansion variable, human readable value */
522extern uschar *dmarc_tld_file; /* Mozilla TLDs text file */
523extern uschar *dmarc_used_domain; /* Expansion variable, domain libopendmarc chose for DMARC policy lookup */
4840604e 524#endif
f7572e5a 525
059ec3d9 526extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
e5a9dba6
PH		 527extern int dns_csa_search_limit; /* How deep to search for CSA SRV records */
528extern BOOL dns_csa_use_reverse; /* Check CSA in reverse DNS? (non-standard) */
d8d9f930 529extern int dns_cname_loops; /* Follow CNAMEs returned by resolver to this depth */
059ec3d9 530extern uschar *dns_ipv4_lookup; /* For these domains, don't look for AAAA (or A6) */
c0635b6d 531#ifdef SUPPORT_DANE
e682570f
TL		 532extern int dns_dane_ok; /* Ok to use DANE when checking TLS authenticity */
533#endif
059ec3d9
PH		 534extern int dns_retrans; /* Retransmission time setting */
535extern int dns_retry; /* Number of retries */
0fbd9bff 536extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
9820a77f 537extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
e97d1f08 538extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
059ec3d9 539extern uschar *dnslist_domain; /* DNS (black) list domain */
93655c46 540extern uschar *dnslist_matched; /* DNS (black) list matched key */
059ec3d9
PH		 541extern uschar *dnslist_text; /* DNS (black) list text message */
542extern uschar *dnslist_value; /* DNS (black) list IP address */
543extern tree_node *domainlist_anchor; /* Tree of defined domain lists */
544extern int domainlist_count; /* Number defined */
059ec3d9
PH		 545
546/* This option is now a no-opt, retained for compatibility */
547extern BOOL drop_cr; /* For broken local MUAs */
548
0e22dfd1
PH		 549extern uschar *dsn_from; /* From: string for DSNs */
550
a207d5dd 551extern BOOL envelope_to_remove; /* Remove envelope_to_headers */
059ec3d9
PH		 552extern int errno_quota; /* Quota errno in this OS */
553extern int error_handling; /* Error handling style */
554extern uschar *errors_copy; /* For taking copies of errors */
555extern uschar *errors_reply_to; /* Reply-to for error messages */
556extern int errors_sender_rc; /* Return after message to sender*/
774ef2d7 557
0cbf2b82 558#ifndef DISABLE_EVENT
774ef2d7
JH		 559extern uschar *event_action; /* expansion for delivery events */
560extern uschar *event_data; /* event data */
561extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
55414b25 562extern const uschar *event_name; /* event classification */
774ef2d7
JH		 563#endif
564
059ec3d9
PH		 565extern gid_t exim_gid; /* To be used with exim_uid */
566extern BOOL exim_gid_set; /* TRUE if exim_gid set */
567extern uschar *exim_path; /* Path to exec exim */
98a90c36 568extern const uschar *exim_sieve_extension_list[]; /* list of sieve extensions */
059ec3d9
PH		 569extern uid_t exim_uid; /* Non-root uid for exim */
570extern BOOL exim_uid_set; /* TRUE if exim_uid set */
e1d04f48 571extern int expand_level; /* Nesting depth; indent for debug */
059ec3d9
PH		 572extern int expand_forbid; /* RDO flags for forbidding things */
573extern int expand_nlength[]; /* Lengths of numbered strings */
574extern int expand_nmax; /* Max numerical value */
575extern uschar *expand_nstring[]; /* Numbered strings */
059ec3d9
PH		 576extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
577extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
578
29aba418
TF		 579extern int fake_response; /* Fake FAIL or DEFER response to data */
580extern uschar *fake_response_text; /* User defined message for the above. Default is in globals.c. */
059ec3d9 581extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
059ec3d9 582extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
f05da2e8
PH		 583extern int filter_test; /* Filter test type */
584extern uschar *filter_test_sfile; /* System filter test file */
585extern uschar *filter_test_ufile; /* User filter test file */
059ec3d9
PH		 586extern uschar *filter_thisaddress; /* For address looping */
587extern int finduser_retries; /* Retry count for getpwnam() */
588extern uid_t fixed_never_users[]; /* Can't be overridden */
589extern uschar *freeze_tell; /* Message on (some) freezings */
6a3f1455 590extern uschar *freeze_tell_config; /* The configured setting */
059ec3d9
PH		 591extern uschar *fudged_queue_times; /* For use in test harness */
592
593extern uschar *gecos_name; /* To be expanded when pattern matches */
594extern uschar *gecos_pattern; /* Pattern to match */
595extern rewrite_rule *global_rewrite_rules; /* Chain of rewriting rules */
596
9723f966
JH		 597extern volatile sig_atomic_t had_command_timeout; /* Alarm sighandler called */
598extern volatile sig_atomic_t had_command_sigterm; /* TERM sighandler called */
599extern volatile sig_atomic_t had_data_timeout; /* Alarm sighandler called */
600extern volatile sig_atomic_t had_data_sigint; /* TERM/INT sighandler called */
059ec3d9
PH		 601extern int header_insert_maxlen; /* Max for inserting headers */
602extern int header_maxsize; /* Max total length for header */
603extern int header_line_maxsize; /* Max for an individual line */
604extern header_name header_names[]; /* Table of header names */
605extern int header_names_size; /* Number of entries */
059ec3d9
PH		 606extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
607extern uschar *helo_allow_chars; /* Rogue chars to allow in HELO/EHLO */
608extern uschar *helo_lookup_domains; /* If these given, lookup host name */
609extern uschar *helo_try_verify_hosts; /* Soft check HELO argument for these */
059ec3d9 610extern uschar *helo_verify_hosts; /* Hard check HELO argument for these */
1ba28e2b 611extern const uschar *hex_digits; /* Used in several places */
059ec3d9 612extern uschar *hold_domains; /* Hold up deliveries to these */
059ec3d9
PH		 613extern uschar *host_data; /* Obtained from lookup in ACL */
614extern uschar *host_lookup; /* For which IP addresses are always looked up */
b08b24c8 615extern BOOL host_lookup_deferred; /* TRUE if lookup deferred */
059ec3d9
PH		 616extern BOOL host_lookup_failed; /* TRUE if lookup failed */
617extern uschar *host_lookup_order; /* Order of host lookup types */
618extern uschar *host_lookup_msg; /* Text for why it failed */
619extern int host_number; /* For sharing spools */
620extern uschar *host_number_string; /* For expanding */
621extern uschar *host_reject_connection; /* Reject these hosts */
622extern tree_node *hostlist_anchor; /* Tree of defined host lists */
623extern int hostlist_count; /* Number defined */
624extern uschar *hosts_connection_nolog; /* Limits the logging option */
625extern uschar *hosts_treat_as_local; /* For routing */
626
627extern int ignore_bounce_errors_after; /* Keep them for this time. */
628extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
629extern uschar *ignore_fromline_hosts; /* Hosts permitted to send "From " */
9ee44efb 630extern int inetd_wait_timeout; /* Timeout for inetd wait mode */
3615fa9a 631extern uschar *initial_cwd; /* The directory we where in at startup */
0ce9abe6 632extern uschar *iterate_item; /* Item from iterate list */
059ec3d9
PH		 633
634extern int journal_fd; /* Fd for journal file */
635
bc3c7bb7 636extern uschar *keep_environment; /* Whitelist for environment variables */
059ec3d9
PH		 637extern int keep_malformed; /* Time to keep malformed messages */
638
639extern uschar *eldap_dn; /* Where LDAP DNs are left */
640extern int load_average; /* Most recently read load average */
69358f02 641extern BOOL local_from_check; /* For adding Sender: (global value) */
059ec3d9
PH		 642extern uschar *local_from_prefix; /* Permitted prefixes */
643extern uschar *local_from_suffix; /* Permitted suffixes */
644extern uschar *local_interfaces; /* For forcing specific interfaces */
9723f966 645#ifdef HAVE_LOCAL_SCAN
059ec3d9
PH		 646extern uschar *local_scan_data; /* Text returned by local_scan() */
647extern optionlist local_scan_options[];/* Option list for local_scan() */
648extern int local_scan_options_count; /* Size of the list */
649extern int local_scan_timeout; /* Timeout for local_scan() */
9723f966 650#endif
059ec3d9
PH		 651extern BOOL local_sender_retain; /* Retain Sender: (with no From: check) */
652extern gid_t local_user_gid; /* As it says; may be set in routers */
653extern uid_t local_user_uid; /* As it says; may be set in routers */
654extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
655extern int localpartlist_count; /* Number defined */
656extern uschar *log_buffer; /* For constructing log entries */
6c6d6e48 657extern int log_default[]; /* Initialization list for log_selector */
059ec3d9 658extern uschar *log_file_path; /* If unset, use default */
6c6d6e48 659extern int log_notall[]; /* Log options excluded from +all */
059ec3d9
PH		 660extern bit_table log_options[]; /* Table of options */
661extern int log_options_count; /* Size of table */
6ea85e9a 662extern int log_reject_target; /* Target log for ACL rejections */
6c6d6e48 663extern unsigned int log_selector[]; /* Bit map of logging options */
059ec3d9
PH		 664extern uschar *log_selector_string; /* As supplied in the config */
665extern FILE *log_stderr; /* Copy of stderr for log use, or NULL */
059ec3d9
PH		 666extern BOOL log_timezone; /* TRUE to include the timezone in log lines */
667extern uschar *login_sender_address; /* The actual sender address */
e6d225ae 668extern lookup_info **lookup_list; /* Array of pointers to available lookups */
059ec3d9 669extern int lookup_list_count; /* Number of entries in the list */
4e0983dc 670extern uschar *lookup_dnssec_authenticated; /* AD status of dns lookup */
059ec3d9
PH		 671extern int lookup_open_max; /* Max lookup files to cache */
672extern uschar *lookup_value; /* Value looked up from file */
673
1a7c9a48 674extern macro_item *macros; /* Configuration macros */
85e03244 675extern macro_item *macros_user; /* Non-builtin configuration macros */
1a7c9a48 676extern macro_item *mlast; /* Last item in macro list */
059ec3d9 677extern uschar *mailstore_basename; /* For mailstore deliveries */
8523533c
TK		 678#ifdef WITH_CONTENT_SCAN
679extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
680#endif
d677b2f2 681extern int max_received_linelength;/* What it says */
059ec3d9
PH		 682extern int max_username_length; /* For systems with broken getpwnam() */
683extern int message_age; /* In seconds */
684extern uschar *message_body; /* Start of message body for filter */
685extern uschar *message_body_end; /* End of message body for filter */
ddea74fa 686extern BOOL message_body_newlines; /* FALSE => remove newlines */
059ec3d9
PH		 687extern int message_body_size; /* Sic */
688extern int message_body_visible; /* Amount visible in message_body */
689extern int message_ended; /* State of message reading and how ended */
690extern uschar *message_headers; /* When built */
691extern uschar message_id_option[]; /* -E<message-id> for use as option */
692extern uschar *message_id_external; /* External form of following */
693extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
694extern uschar *message_id_text; /* Expanded to form message_id */
695extern struct timeval message_id_tv; /* Time used to create last message_id */
696extern int message_linecount; /* As it says */
697extern BOOL message_logs; /* TRUE to write message logs */
698extern int message_size; /* Size of message */
699extern uschar *message_size_limit; /* As it says */
8c5d388a 700#ifdef SUPPORT_I18N
eb02f5df 701extern BOOL message_smtputf8; /* Internationalized mail handling */
3c8b3577 702extern int message_utf8_downconvert; /* convert from utf8 */
7ade712c 703const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
eb02f5df 704#endif
059ec3d9
PH		 705extern uschar message_subdir[]; /* Subdirectory for messages */
706extern uschar *message_reference; /* Reference for error messages */
8523533c
TK		 707
708/* MIME ACL expandables */
709#ifdef WITH_CONTENT_SCAN
710extern int mime_anomaly_level;
1ba28e2b 711extern const uschar *mime_anomaly_text;
8523533c
TK		 712extern uschar *mime_boundary;
713extern uschar *mime_charset;
714extern uschar *mime_content_description;
715extern uschar *mime_content_disposition;
716extern uschar *mime_content_id;
717extern unsigned int mime_content_size;
718extern uschar *mime_content_transfer_encoding;
719extern uschar *mime_content_type;
720extern uschar *mime_decoded_filename;
721extern uschar *mime_filename;
722extern int mime_is_multipart;
723extern int mime_is_coverletter;
724extern int mime_is_rfc822;
725extern int mime_part_count;
726#endif
727
059ec3d9
PH		 728extern BOOL mua_wrapper; /* TRUE when Exim is wrapping an MUA */
729
730extern uid_t *never_users; /* List of uids never to be used */
8523533c 731#ifdef WITH_CONTENT_SCAN
8523533c 732#endif
059ec3d9 733
fb05276a
JH		 734extern const int on; /* For setsockopt */
735extern const int off;
736
059ec3d9
PH		 737extern optionlist optionlist_auths[]; /* These option lists are made */
738extern int optionlist_auths_size; /* global so that readconf can */
739extern optionlist optionlist_routers[]; /* see them for printing out */
740extern int optionlist_routers_size; /* the options. */
741extern optionlist optionlist_transports[];
742extern int optionlist_transports_size;
743
744extern uid_t original_euid; /* Original effective uid */
745extern gid_t originator_gid; /* Gid of whoever wrote spool file */
746extern uschar *originator_login; /* Login of same */
747extern uschar *originator_name; /* Full name of same */
748extern uid_t originator_uid; /* Uid of ditto */
749extern uschar *override_local_interfaces; /* Value of -oX argument */
750extern uschar *override_pid_file_path; /* Value of -oP argument */
751
059ec3d9
PH		 752extern uschar *percent_hack_domains; /* Local domains for which '% operates */
753extern uschar *pid_file_path; /* For writing daemon pids */
81344b40 754#ifndef DISABLE_PIPE_CONNECT
ee8b8090
JH		 755extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
756#endif
059ec3d9 757extern uschar *pipelining_advertise_hosts; /* As it says */
8ccd00b1 758#ifndef DISABLE_PRDR
fd98a5c6
JH		 759extern BOOL prdr_enable; /* As it says */
760extern BOOL prdr_requested; /* Connecting mail server wants PRDR */
761#endif
059ec3d9
PH		 762extern BOOL preserve_message_logs; /* Save msglog files */
763extern uschar *primary_hostname; /* Primary name of this computer */
764extern BOOL print_topbitchars; /* Topbit chars are printing chars */
f3ebb786 765extern uschar *process_info; /* For SIGUSR1 output */
921b12ca 766extern int process_info_len;
059ec3d9
PH		 767extern uschar *process_log_path; /* Alternate path */
768extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
a3c86431 769
e6d2a989 770#if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
cee5f132 771extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
e6d2a989
JH		 772extern uschar *proxy_external_address; /* IP of remote interface of proxy */
773extern int proxy_external_port; /* Port on remote interface of proxy */
774extern uschar *proxy_local_address; /* IP of local interface of proxy */
775extern int proxy_local_port; /* Port on local interface of proxy */
a3c86431 776extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
a3c86431
TL		 777#endif
778
fffda43a
TK		 779extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
780extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
781extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
059ec3d9 782
55414b25 783extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
059ec3d9 784extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
059ec3d9
PH		 785extern uschar *queue_domains; /* Queue these domains */
786extern BOOL queue_list_requires_admin; /* TRUE if -bp requires admin */
059ec3d9
PH		 787 /* immediate children */
788extern pid_t queue_run_pid; /* PID of the queue running process or 0 */
789extern int queue_run_pipe; /* Pipe for synchronizing */
790extern int queue_interval; /* Queue running interval */
a2da3176 791extern uschar *queue_name; /* Name of queue, if nondefault spooling */
059ec3d9
PH		 792extern BOOL queue_only; /* TRUE to disable immediate delivery */
793extern int queue_only_load; /* Max load before auto-queue */
8669f003 794extern BOOL queue_only_load_latch; /* Latch queue_only_load TRUE */
059ec3d9
PH		 795extern uschar *queue_only_file; /* Queue if file exists/not-exists */
796extern BOOL queue_only_override; /* Allow override from command line */
059ec3d9 797extern BOOL queue_run_in_order; /* As opposed to random */
0cd5fd23 798extern uschar *queue_run_max; /* Max queue runners */
059ec3d9
PH		 799extern uschar *queue_smtp_domains; /* Ditto, for these domains */
800
801extern unsigned int random_seed; /* Seed for random numbers */
fe0dab11 802extern tree_node *ratelimiters_cmd; /* Results of command ratelimit checks */
870f6ba8
TF		 803extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
804extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
059ec3d9
PH		 805extern uschar *raw_active_hostname; /* Pre-expansion */
806extern uschar *raw_sender; /* Before rewriting */
807extern uschar **raw_recipients; /* Before rewriting */
808extern int raw_recipients_count;
17ccbda6 809extern const uschar * rc_names[]; /* Mostly for debug output */
059ec3d9
PH		 810extern int rcpt_count; /* Count of RCPT commands in a message */
811extern int rcpt_fail_count; /* Those that got 5xx */
812extern int rcpt_defer_count; /* Those that got 4xx */
813extern gid_t real_gid; /* Real gid */
814extern uid_t real_uid; /* Real user running program */
059ec3d9
PH		 815extern int receive_linecount; /* Mainly for BSMTP errors */
816extern int receive_messagecount; /* Mainly for BSMTP errors */
817extern int receive_timeout; /* For non-SMTP acceptance */
818extern int received_count; /* Count of Received: headers */
819extern uschar *received_for; /* For "for" field */
820extern uschar *received_header_text; /* Definition of Received: header */
821extern int received_headers_max; /* Max count of Received: headers */
32dfdf8b 822extern struct timeval received_time; /* Time the message was received */
306c6c77 823extern struct timeval received_time_taken; /* Interval the message took to be received */
059ec3d9
PH		 824extern uschar *recipient_data; /* lookup data for recipients */
825extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
2c7db3f5 826extern uschar *recipient_verify_failure; /* What went wrong */
059ec3d9
PH		 827extern int recipients_list_max; /* Maximum number fitting in list */
828extern int recipients_max; /* Max permitted */
a207d5dd 829extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
059ec3d9
PH		 830extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
831extern const pcre *regex_check_dns_names; /* For DNS name checking */
832extern const pcre *regex_From; /* For recognizing "From_" lines */
f98442df 833extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
f1513293 834extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
059ec3d9
PH		 835extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
836extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
81344b40 837#ifndef DISABLE_PIPE_CONNECT
ee8b8090
JH		 838extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
839#endif
059ec3d9 840extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
f38917cc
JH		 841extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
842extern uschar *regex_vars[]; /* $regexN variables */
a7cbbf50
PP		 843#ifdef WHITELIST_D_MACROS
844extern const pcre *regex_whitelisted_macro; /* For -D macro values */
845#endif
8523533c
TK		 846#ifdef WITH_CONTENT_SCAN
847extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
848#endif
059ec3d9
PH		 849extern int remote_delivery_count; /* Number of remote addresses */
850extern int remote_max_parallel; /* Maximum parallel delivery */
851extern uschar *remote_sort_domains; /* Remote domain sorting order */
852extern retry_config *retries; /* Chain of retry config information */
853extern int retry_data_expire; /* When to expire retry data */
854extern int retry_interval_max; /* Absolute maximum */
855extern int retry_maximum_timeout; /* The maximum timeout */
856extern uschar *return_path; /* Return path for a message */
857extern BOOL return_path_remove; /* Remove return-path headers */
858extern int rewrite_existflags; /* Indicate which headers have rewrites */
859extern uschar *rfc1413_hosts; /* RFC hosts */
860extern int rfc1413_query_timeout; /* Timeout on RFC 1413 calls */
861/* extern BOOL rfc821_domains; */ /* If set, syntax is 821, not 822 => being abolished */
c1d94452 862extern uid_t root_gid; /* The gid for root */
059ec3d9
PH		 863extern uid_t root_uid; /* The uid for root */
864extern router_info routers_available[];/* Vector of available routers */
865extern router_instance *routers; /* Chain of instantiated routers */
866extern router_instance router_defaults;/* Default values */
181d9bf8 867extern uschar *router_name; /* Name of router last started */
fa7b17bd 868extern tree_node *router_var; /* Variables set by router */
059ec3d9
PH		 869extern ip_address_item *running_interfaces; /* Host's running interfaces */
870extern uschar *running_status; /* Flag string for testing */
871extern int runrc; /* rc from ${run} */
872
873extern uschar *search_error_message; /* Details of lookup problem */
059ec3d9
PH		 874extern uschar *self_hostname; /* Self host after routing->directors */
875extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
2a3eea10 876extern uschar *sender_address_data; /* address_data from sender verify */
059ec3d9
PH		 877extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
878extern uschar *sender_data; /* lookup result for senders */
879extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
880extern uschar *sender_fullhost; /* Sender host name + address */
1705dd20 881extern BOOL sender_helo_dnssec; /* True if HELO verify used DNS and was DNSSEC */
059ec3d9
PH		 882extern uschar *sender_helo_name; /* Host name from HELO/EHLO */
883extern uschar **sender_host_aliases; /* Points to list of alias names */
c44ff8be 884extern uschar *sender_host_auth_pubname; /* Public-name of authentication method */
059ec3d9 885extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
1f4a55da 886extern BOOL sender_host_dnssec; /* true if sender_host_name verified in DNSSEC */
059ec3d9 887extern uschar *sender_ident; /* Sender identity via RFC 1413 */
870f6ba8
TF		 888extern uschar *sender_rate; /* Sender rate computed by ACL */
889extern uschar *sender_rate_limit; /* Configured rate limit */
890extern uschar *sender_rate_period; /* Configured smoothing period */
059ec3d9 891extern uschar *sender_rcvhost; /* Host data for Received: */
059ec3d9 892extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
2c7db3f5 893extern uschar *sender_verify_failure; /* What went wrong */
059ec3d9
PH		 894extern address_item *sender_verified_list; /* Saved chain of sender verifies */
895extern address_item *sender_verified_failed; /* The one that caused denial */
41c7c167
PH		 896extern uschar *sending_ip_address; /* Address of outgoing (SMTP) interface */
897extern int sending_port; /* Port of outgoing interface */
cd59ab18 898extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
c2a1bba0 899extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
059ec3d9 900extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
4c04137d 901extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
059ec3d9
PH		 902extern int smtp_accept_count; /* Count of connections */
903extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
904extern int smtp_accept_max; /* Max SMTP connections */
905extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
906extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
907extern int smtp_accept_max_per_connection; /* Max msgs per connection */
908extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
909extern int smtp_accept_queue; /* Queue after so many connections */
910extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
911extern int smtp_accept_reserve; /* Reserve these SMTP connections */
912extern uschar *smtp_active_hostname; /* Hostname for this message */
059ec3d9
PH		 913extern uschar *smtp_banner; /* Banner string (to be expanded) */
914extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
b4ed4da0 915extern int smtp_ch_index; /* Index in smtp_connection_had */
3ee512ff
PH		 916extern uschar *smtp_cmd_argument; /* For all SMTP commands */
917extern uschar *smtp_cmd_buffer; /* SMTP command buffer */
0f1a8658 918extern struct timeval smtp_connection_start; /* Start time of SMTP connection */
b4ed4da0 919extern uschar smtp_connection_had[]; /* Recent SMTP commands */
059ec3d9
PH		 920extern int smtp_connect_backlog; /* Max backlog permitted */
921extern double smtp_delay_mail; /* Current MAIL delay */
922extern double smtp_delay_rcpt; /* Current RCPT delay */
923extern BOOL smtp_enforce_sync; /* Enforce sync rules */
924extern uschar *smtp_etrn_command; /* Command to run */
925extern BOOL smtp_etrn_serialize; /* Only one at once */
926extern FILE *smtp_in; /* Incoming SMTP input file */
927extern int smtp_load_reserve; /* Only from reserved if load > this */
928extern int smtp_mailcmd_count; /* Count of MAIL commands */
929extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
930extern int smtp_max_unknown_commands; /* As it says */
8f128379 931extern uschar *smtp_notquit_reason; /* Global for disconnect reason */
059ec3d9
PH		 932extern FILE *smtp_out; /* Incoming SMTP output file */
933extern uschar *smtp_ratelimit_hosts; /* Rate limit these hosts */
934extern uschar *smtp_ratelimit_mail; /* Parameters for MAIL limiting */
935extern uschar *smtp_ratelimit_rcpt; /* Parameters for RCPT limiting */
936extern uschar *smtp_read_error; /* Message for SMTP input error */
937extern int smtp_receive_timeout; /* Applies to each received line */
1ad6489e 938extern uschar *smtp_receive_timeout_s; /* ... expandable version */
059ec3d9
PH		 939extern uschar *smtp_reserve_hosts; /* Hosts for reserved slots */
940extern BOOL smtp_return_error_details; /* TRUE to return full info */
941extern int smtp_rlm_base; /* Base interval for MAIL rate limit */
942extern double smtp_rlm_factor; /* Factor for MAIL rate limit */
943extern int smtp_rlm_limit; /* Max delay */
944extern int smtp_rlm_threshold; /* Threshold for RCPT rate limit */
945extern int smtp_rlr_base; /* Base interval for RCPT rate limit */
946extern double smtp_rlr_factor; /* Factor for RCPT rate limit */
947extern int smtp_rlr_limit; /* Max delay */
948extern int smtp_rlr_threshold; /* Threshold for RCPT rate limit */
2d14f397
JH		 949extern unsigned smtp_peer_options; /* Global flags for passed connections */
950extern unsigned smtp_peer_options_wrap; /* stacked version hidden by TLS */
8c5d388a 951#ifdef SUPPORT_I18N
3d1451ea
JH		 952extern uschar *smtputf8_advertise_hosts; /* ingress control */
953#endif
8523533c
TK		 954
955#ifdef WITH_CONTENT_SCAN
956extern uschar *spamd_address; /* address for the spamassassin daemon */
957extern uschar *spam_bar; /* the spam "bar" (textual representation of spam_score) */
958extern uschar *spam_report; /* the spamd report (multiline) */
c5f280e2 959extern uschar *spam_action; /* the spamd recommended-action */
8523533c
TK		 960extern uschar *spam_score; /* the spam score (float) */
961extern uschar *spam_score_int; /* spam_score * 10 (int) */
962#endif
7952eef9 963#ifdef SUPPORT_SPF
65a7d8c3 964extern uschar *spf_guess; /* spf best-guess record */
8523533c 965extern uschar *spf_header_comment; /* spf header comment */
8fe685ad 966extern uschar *spf_received; /* Received-SPF: header */
8523533c 967extern uschar *spf_result; /* spf result in string form */
87e9d061 968extern BOOL spf_result_guessed; /* spf result is of best-guess operation */
8523533c
TK		 969extern uschar *spf_smtp_comment; /* spf comment to include in SMTP reply */
970#endif
059ec3d9 971extern BOOL split_spool_directory; /* TRUE to use multiple subdirs */
1bd642c2 972extern FILE *spool_data_file; /* handle for -D file */
059ec3d9 973extern uschar *spool_directory; /* Name of spool directory */
328c5688 974extern BOOL spool_wireformat; /* can write wireformat -D files */
8523533c
TK		 975#ifdef EXPERIMENTAL_SRS
976extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
977extern uschar *srs_db_address; /* SRS db address */
978extern uschar *srs_db_key; /* SRS db key */
384152a6
TK		 979extern int srs_hashlength; /* SRS hash length */
980extern int srs_hashmin; /* SRS minimum hash length */
981extern int srs_maxage; /* SRS max age */
8523533c
TK		 982extern uschar *srs_orig_sender; /* SRS original sender */
983extern uschar *srs_orig_recipient; /* SRS original recipient */
984extern uschar *srs_recipient; /* SRS recipient */
384152a6 985extern uschar *srs_secrets; /* SRS secrets list */
8523533c 986extern uschar *srs_status; /* SRS staus */
384152a6
TK		 987extern BOOL srs_usehash; /* SRS use hash flag */
988extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
8523533c 989#endif
7ef88aa0
JH		 990#ifdef EXPERIMENTAL_SRS_NATIVE
991extern uschar *srs_recipient; /* SRS recipient */
992#endif
38a0a95f 993extern BOOL strict_acl_vars; /* ACL variables have to be set before being used */
059ec3d9 994extern int string_datestamp_offset;/* After insertion by string_format */
f1e5fef5
PP		 995extern int string_datestamp_length;/* After insertion by string_format */
996extern int string_datestamp_type; /* After insertion by string_format */
059ec3d9
PH		 997extern BOOL strip_excess_angle_brackets; /* Surrounding route-addrs */
998extern BOOL strip_trailing_dot; /* Remove dots at ends of domains */
999extern uschar *submission_domain; /* Domain for submission mode */
2fe1a124 1000extern uschar *submission_name; /* User name set from ACL */
059ec3d9
PH		 1001extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
1002extern int syslog_facility; /* As defined by Syslog.h */
2333e06f 1003extern BOOL syslog_pid; /* TRUE if PID on syslogs */
059ec3d9
PH		 1004extern uschar *syslog_processname; /* 'ident' param to openlog() */
1005extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
1006extern uschar *system_filter; /* Name of system filter file */
1007
1008extern uschar *system_filter_directory_transport; /* Transports for the */
1009extern uschar *system_filter_file_transport; /* system filter */
1010extern uschar *system_filter_pipe_transport;
1011extern uschar *system_filter_reply_transport;
1012
1013extern gid_t system_filter_gid; /* Gid for running system filter */
1014extern BOOL system_filter_gid_set; /* TRUE if gid set */
1015extern uid_t system_filter_uid; /* Uid for running system filter */
1016extern BOOL system_filter_uid_set; /* TRUE if uid set */
059ec3d9 1017
0ab63f3d 1018extern blob tcp_fastopen_nodata; /* for zero-data TFO connect requests */
059ec3d9 1019extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
ee8b8090 1020extern tfo_state_t tcp_out_fastopen; /* TCP fast open */
5dc43717
JJ		 1021#ifdef USE_TCP_WRAPPERS
1022extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */
1023#endif
8669f003 1024extern int test_harness_load_avg; /* For use when testing */
059ec3d9
PH		 1025extern int thismessage_size_limit; /* Limit for this message */
1026extern int timeout_frozen_after; /* Max time to keep frozen messages */
9f01e50d
JH		 1027#ifdef MEASURE_TIMING
1028extern struct timeval timestamp_startup; /* For development measurements */
1029#endif
d68218c7 1030
181d9bf8 1031extern uschar *transport_name; /* Name of transport last started */
059ec3d9 1032extern int transport_count; /* Count of bytes transported */
332f5cf3 1033extern int transport_newlines; /* Accurate count of number of newline chars transported */
55414b25 1034extern const uschar **transport_filter_argv; /* For on-the-fly filtering */
059ec3d9
PH		 1035extern int transport_filter_timeout; /* Timeout for same */
1036
1037extern transport_info transports_available[]; /* Vector of available transports */
1038extern transport_instance *transports; /* Chain of instantiated transports */
1039extern transport_instance transport_defaults; /* Default values */
1040
1041extern int transport_write_timeout;/* Set to time out individual writes */
1042
1043extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
1044extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
1045extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
1046extern tree_node *tree_unusable; /* Tree of unusable addresses */
1047
059ec3d9
PH		 1048extern gid_t *trusted_groups; /* List of trusted groups */
1049extern uid_t *trusted_users; /* List of trusted users */
1050extern uschar *timezone_string; /* Required timezone setting */
1051
1052extern uschar *unknown_login; /* To use when login id unknown */
1053extern uschar *unknown_username; /* Ditto */
1054extern uschar *untrusted_set_sender; /* Let untrusted users set these senders */
1055extern uschar *uucp_from_pattern; /* For recognizing "From " lines */
1056extern uschar *uucp_from_sender; /* For building the sender */
1057
1058extern uschar *warn_message_file; /* Template for warning messages */
1059extern uschar *warnmsg_delay; /* String form of delay time */
1060extern uschar *warnmsg_recipients; /* Recipients of warning message */
1061extern BOOL write_rejectlog; /* Control of reject logging */
1062
aec45841 1063extern uschar *verify_mode; /* Running a router in verify mode */
059ec3d9
PH		 1064extern uschar *version_copyright; /* Copyright notice */
1065extern uschar *version_date; /* Date of compilation */
1066extern uschar *version_cnumber; /* Compile number */
1067extern uschar *version_string; /* Version string */
1068
1069extern int warning_count; /* Delay warnings sent for this msg */
1070
1071/* End of globals.h */
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