* Exim - an Internet mail transport agent *
*************************************************/
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
/* Copyright (c) University of Cambridge 1995 - 2018 */
-/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Almost all the global variables are defined together in this one header, so
that they are easy to find. However, those that are visible during the
OCSP_VFIED /* verified */
} ocsp; /* Stapled OCSP status */
#ifndef DISABLE_TLS_RESUME
+ hctx resume_hctx; /* session lookup key accumulation */
+ const uschar * resume_index; /* session lookup key */
+
unsigned resumption; /* Session resumption */
BOOL host_resumable:1;
BOOL ticket_received:1;
#endif
BOOL verify_override:1; /* certificate_verified only due to tls_try_verify_hosts */
BOOL ext_master_secret:1; /* extended-master-secret was used */
+ BOOL channelbind_exporter:1; /* channelbinding is EXPORTER not UNIQUE */
} tls_support;
extern tls_support tls_in;
extern tls_support tls_out;
#ifndef DISABLE_TLS
extern BOOL gnutls_compat_mode; /* Less security, more compatibility */
extern BOOL gnutls_allow_auto_pkcs11; /* Let GnuTLS autoload PKCS11 modules */
+extern uschar *hosts_require_alpn; /* Mandatory ALPN successful nogitiation */
extern uschar *openssl_options; /* OpenSSL compatibility options */
-extern const pcre *regex_STARTTLS; /* For recognizing STARTTLS settings */
+extern const pcre2_code *regex_STARTTLS; /* For recognizing STARTTLS settings */
+extern uschar *tls_alpn; /* ALPN names acceptable */
extern uschar *tls_certificate; /* Certificate file */
extern uschar *tls_crl; /* CRL File */
extern int tls_dh_max_bits; /* don't accept higher lib suggestions */
extern uschar *tls_try_verify_hosts; /* Optional client verification */
extern uschar *tls_verify_certificates;/* Path for certificates to check */
extern uschar *tls_verify_hosts; /* Mandatory client verification */
+extern int tls_watch_fd; /* for inotify of creds files */
+extern time_t tls_watch_trigger_time; /* non-0: triggered */
#endif
extern uschar *tls_advertise_hosts; /* host for which TLS is advertised */
extern uschar *dsn_envid; /* DSN envid string */
extern int dsn_ret; /* DSN ret type*/
-extern const pcre *regex_DSN; /* For recognizing DSN settings */
+extern const pcre2_code *regex_DSN; /* For recognizing DSN settings */
extern uschar *dsn_advertise_hosts; /* host for which TLS is advertised */
/* Input-reading functions for messages, so we can use special ones for
extern int (*lwr_receive_getc)(unsigned);
extern uschar * (*lwr_receive_getbuf)(unsigned *);
+extern BOOL (*lwr_receive_hasc)(void);
extern int (*lwr_receive_ungetc)(int);
+
extern int (*receive_getc)(unsigned);
extern uschar * (*receive_getbuf)(unsigned *);
-extern void (*receive_get_cache)(void);
+extern BOOL (*receive_hasc)(void);
+extern void (*receive_get_cache)(unsigned);
extern int (*receive_ungetc)(int);
extern int (*receive_feof)(void);
extern int (*receive_ferror)(void);
-extern BOOL (*receive_smtp_buffered)(void);
/* For clearing, saving, restoring address expansion variables. We have to have
BOOL authentication_local :1; /* TRUE if non-smtp (implicit authentication) */
BOOL background_daemon :1; /* Set FALSE to keep in foreground */
+ BOOL bdat_readers_wanted :1; /* BDAT-handling to be pushed on readfunc stack */
BOOL chunking_offered :1;
BOOL config_changed :1; /* True if -C used */
BOOL continue_more :1; /* Flag more addresses waiting */
BOOL daemon_listen :1; /* True if listening required */
+ BOOL daemon_scion :1; /* Ancestor proc is daemon, and not re-exec'd */
BOOL debug_daemon :1; /* Debug the daemon process only */
BOOL deliver_firsttime :1; /* True for first delivery attempt */
BOOL deliver_force :1; /* TRUE if delivery was forced */
BOOL no_mbox_unspool :1; /* don't unlink files in /scan directory */
#endif
BOOL no_multiline_responses :1; /* For broken clients */
+ BOOL notifier_socket_en :1; /* Permit create of notifier socket */
BOOL parse_allow_group :1; /* Allow group syntax */
BOOL parse_found_group :1; /* In the middle of a group */
BOOL queue_2stage :1; /* Run queue in 2-stage manner */
BOOL queue_only_policy :1; /* ACL or local_scan wants queue_only */
- BOOL queue_run_first_delivery :1; /* If TRUE, first deliveries only */
- BOOL queue_run_force :1; /* TRUE to force during queue run */
BOOL queue_run_local :1; /* Local deliveries only in queue run */
BOOL queue_running :1; /* TRUE for queue running process and */
BOOL queue_smtp :1; /* Disable all immediate SMTP (-odqs)*/
BOOL sender_set_untrusted :1; /* Sender set by untrusted caller */
BOOL smtp_authenticated :1; /* Sending client has authenticated */
#ifndef DISABLE_PIPE_CONNECT
- BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPE_CONNECT */
+ BOOL smtp_in_early_pipe_advertised :1; /* server advertised PIPECONNECT */
BOOL smtp_in_early_pipe_no_auth :1; /* too many authenticator names */
BOOL smtp_in_early_pipe_used :1; /* client did send early data */
#endif
extern uschar *acl_smtp_data; /* ACL run after DATA received */
#ifndef DISABLE_PRDR
extern uschar *acl_smtp_data_prdr; /* ACL run after DATA received if in PRDR mode*/
-const extern pcre *regex_PRDR; /* For recognizing PRDR settings */
+extern const pcre2_code *regex_PRDR; /* For recognizing PRDR settings */
#endif
#ifndef DISABLE_DKIM
extern uschar *acl_smtp_dkim; /* ACL run for DKIM signatures / domains */
extern uschar *acl_wherenames[]; /* Names for messages */
extern address_item *addr_duplicate; /* Duplicate address list */
extern address_item address_defaults; /* Default data for address item */
-extern uschar *address_file; /* Name of file when delivering to one */
-extern uschar *address_pipe; /* Pipe command when delivering to one */
+extern const uschar *address_file; /* Name of file when delivering to one */
+extern const uschar *address_pipe; /* Pipe command when delivering to one */
extern tree_node *addresslist_anchor; /* Tree of defined address lists */
extern int addresslist_count; /* Number defined */
extern gid_t *admin_groups; /* List of admin groups */
extern uschar *authenticated_id; /* ID that was authenticated */
extern uschar *authenticated_sender; /* From AUTH on MAIL */
extern BOOL authentication_failed; /* TRUE if AUTH was tried and failed */
+extern uschar *authenticator_name; /* for debug and error messages */
extern uschar *auth_advertise_hosts; /* Only advertise to these */
extern auth_info auths_available[]; /* Vector of available auth mechanisms */
extern auth_instance *auths; /* Chain of instantiated auths */
extern auth_instance auth_defaults; /* Default values */
extern uschar *auth_defer_msg; /* Error message for log */
extern uschar *auth_defer_user_msg; /* Error message for user */
-extern uschar *auth_vars[]; /* $authn variables */
+extern const uschar *auth_vars[]; /* $authn variables */
extern int auto_thaw; /* Auto-thaw interval */
#ifdef WITH_CONTENT_SCAN
extern int av_failed; /* TRUE if the AV process failed */
extern int body_8bitmime; /* sender declared BODY= ; 7=7BIT, 8=8BITMIME */
extern uschar *bounce_message_file; /* Template file */
extern uschar *bounce_message_text; /* One-liner */
-extern uschar *bounce_recipient; /* When writing an errmsg */
+extern const uschar *bounce_recipient; /* When writing an errmsg */
extern BOOL bounce_return_body; /* Include body in returned message */
extern int bounce_return_linesize_limit; /* Max line length in return */
extern BOOL bounce_return_message; /* Include message in bounce */
extern uschar *client_authenticator; /* Authenticator name used for smtp delivery */
extern uschar *client_authenticated_id; /* "login" name used for SMTP AUTH */
extern uschar *client_authenticated_sender; /* AUTH option to SMTP MAIL FROM (not yet used) */
+#ifndef DISABLE_CLIENT_CMD_LOG
+extern gstring *client_cmd_log; /* debug log of client cmds & responses */
+#endif
extern int clmacro_count; /* Number of command line macros */
extern uschar *clmacros[]; /* Copy of them, for re-exec */
extern BOOL commandline_checks_require_admin; /* belt and braces for insecure setups */
+extern uint64_t connection_id; /* connection number */
extern int connection_max_messages;/* Max down one SMTP connection */
extern FILE *config_file; /* Configuration file */
extern const uschar *config_filename; /* Configuration file name */
extern gid_t config_gid; /* Additional group owner */
extern int config_lineno; /* Line number */
-extern uschar *config_main_filelist; /* List of possible config files */
+extern const uschar *config_main_filelist; /* List of possible config files */
extern uschar *config_main_filename; /* File name actually used */
extern uschar *config_main_directory; /* Directory where the main config file was found */
extern uid_t config_uid; /* Additional owner */
extern uschar *continue_proxy_cipher; /* TLS cipher for proxied continued delivery */
+extern BOOL continue_proxy_dane; /* proxied conn is DANE */
+extern uschar *continue_proxy_sni; /* proxied conn SNI */
extern uschar *continue_hostname; /* Host for continued delivery */
extern uschar *continue_host_address; /* IP address for ditto */
extern int continue_sequence; /* Sequence num for continued delivery */
extern uschar *continue_transport; /* Transport for continued delivery */
+#ifndef DISABLE_ESMTP_LIMITS
+extern unsigned continue_limit_mail; /* Peer advertised limit */
+extern unsigned continue_limit_rcpt;
+extern unsigned continue_limit_rcptdom;
+#endif
+
extern uschar *csa_status; /* Client SMTP Authorization result */
extern int debug_notall[]; /* Debug options excluded from +all */
extern bit_table debug_options[]; /* Table of debug options */
extern int debug_options_count; /* Size of table */
+extern unsigned debug_pretrigger_bsize;
+extern uschar *debug_pretrigger_buf; /* circular buffer for precapture */
extern BOOL debug_store; /* Do extra checks on store_reset */
+extern uschar debuglog_name[LOG_NAME_SIZE]; /* ACL-init debug */
+
extern int delay_warning[]; /* Times between warnings */
extern uschar *delay_warning_condition; /* Condition string for warnings */
extern BOOL delivery_date_remove; /* Remove delivery-date headers */
extern int deliver_host_port; /* Address for remote delivery filter */
extern uschar *deliver_in_buffer; /* Buffer for copying file */
extern ino_t deliver_inode; /* Inode for appendfile */
-extern uschar *deliver_localpart; /* The local part for delivery */
+extern const uschar *deliver_localpart;/* The local part for delivery */
extern uschar *deliver_localpart_data; /* From local part lookup (de-tainted) */
-extern uschar *deliver_localpart_orig; /* The original local part for delivery */
-extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
-extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
-extern uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
-extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
-extern uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
+extern const uschar *deliver_localpart_orig; /* The original local part for delivery */
+extern const uschar *deliver_localpart_parent; /* The parent local part for delivery */
+extern const uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
+extern const uschar *deliver_localpart_prefix_v; /* The stripped-prefix variable portion, if any */
+extern const uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
+extern const uschar *deliver_localpart_suffix_v; /* The stripped-suffix variable portion, if any */
extern uschar *deliver_out_buffer; /* Buffer for copying file */
extern int deliver_queue_load_max; /* Different value for queue running */
extern address_item *deliver_recipients; /* Current set of addresses */
extern int dkim_key_length; /* Expansion variable, length of signing key in bits */
extern void *dkim_signatures; /* Actually a (pdkim_signature *) but most files do not need to know */
extern uschar *dkim_signers; /* Expansion variable, holds colon-separated list of domains and identities that have signed a message */
+extern gstring *dkim_signing_record; /* domains+selectors used */
extern uschar *dkim_signing_domain; /* Expansion variable, domain used for signing a message. */
extern uschar *dkim_signing_selector; /* Expansion variable, selector used for signing a message. */
extern uschar *dkim_verify_hashes; /* Preference order for signatures */
extern uschar *dkim_verify_keytypes; /* Preference order for signatures */
extern uschar *dkim_verify_min_keysizes; /* list of minimum key sizes, keyed by algo */
-extern BOOL dkim_verify_minimal; /* Shortcircuit signture verification */
+extern BOOL dkim_verify_minimal; /* Shortcircuit signature verification */
extern uschar *dkim_verify_overall; /* First successful domain verified, or null */
extern uschar *dkim_verify_signers; /* Colon-separated list of domains for each of which we call the DKIM ACL */
extern uschar *dkim_verify_status; /* result for this signature */
extern int dns_retrans; /* Retransmission time setting */
extern int dns_retry; /* Number of retries */
extern int dns_dnssec_ok; /* When constructing DNS query, set DO flag */
+extern const uschar * dns_rc_names[]; /* Mostly for debug output */
extern uschar *dns_trust_aa; /* DNSSEC trust AA as AD */
extern int dns_use_edns0; /* Coerce EDNS0 support on/off in resolver. */
extern uschar *dnslist_domain; /* DNS (black) list domain */
/* This option is now a no-opt, retained for compatibility */
extern BOOL drop_cr; /* For broken local MUAs */
+extern const uschar *driver_srcfile; /* For debug & errors */
+extern int driver_srcline; /* For debug & errors */
+
+extern unsigned int dtrigger_selector; /* when to start debug */
extern uschar *dsn_from; /* From: string for DSNs */
#ifndef DISABLE_EVENT
extern uschar *event_action; /* expansion for delivery events */
-extern uschar *event_data; /* event data */
+extern const uschar *event_data; /* event data */
extern int event_defer_errno; /* error number set when a remote delivery is deferred with a host error */
extern const uschar *event_name; /* event classification */
#endif
extern int expand_forbid; /* RDO flags for forbidding things */
extern int expand_nlength[]; /* Lengths of numbered strings */
extern int expand_nmax; /* Max numerical value */
-extern uschar *expand_nstring[]; /* Numbered strings */
+extern const uschar *expand_nstring[]; /* Numbered strings */
extern BOOL extract_addresses_remove_arguments; /* Controls -t behaviour */
extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
extern int filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
extern int filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
extern int filter_test; /* Filter test type */
-extern uschar *filter_test_sfile; /* System filter test file */
-extern uschar *filter_test_ufile; /* User filter test file */
+extern const uschar *filter_test_sfile;/* System filter test file */
+extern const uschar *filter_test_ufile;/* User filter test file */
extern uschar *filter_thisaddress; /* For address looping */
extern int finduser_retries; /* Retry count for getpwnam() */
extern uid_t fixed_never_users[]; /* Can't be overridden */
extern int host_number; /* For sharing spools */
extern uschar *host_number_string; /* For expanding */
extern uschar *host_reject_connection; /* Reject these hosts */
-extern tree_node *hostlist_anchor; /* Tree of defined host lists */
-extern int hostlist_count; /* Number defined */
extern uschar *hosts_connection_nolog; /* Limits the logging option */
+extern uschar *hosts_require_helo; /* check for HELO/EHLO before MAIL */
extern uschar *hosts_treat_as_local; /* For routing */
+#ifdef EXPERIMENTAL_XCLIENT
+extern uschar *hosts_xclient; /* Allow XCLIENT command for specified hosts */
+#endif
+extern tree_node *hostlist_anchor; /* Tree of defined host lists */
+extern int hostlist_count; /* Number defined */
+
extern int ignore_bounce_errors_after; /* Keep them for this time. */
extern BOOL ignore_fromline_local; /* Local SMTP ignore fromline */
extern int keep_malformed; /* Time to keep malformed messages */
extern uschar *eldap_dn; /* Where LDAP DNs are left */
+extern const uschar *letter_digit_hyphen_dot; /* Legitimate DNS host name chars */
+#ifndef DISABLE_ESMTP_LIMITS
+extern uschar *limits_advertise_hosts; /* for banner/EHLO pipelining */
+#endif
extern int load_average; /* Most recently read load average */
extern BOOL local_from_check; /* For adding Sender: (global value) */
extern uschar *local_from_prefix; /* Permitted prefixes */
extern uschar *message_id_external; /* External form of following */
extern uschar *message_id_domain; /* Expanded to form domain-part of message_id */
extern uschar *message_id_text; /* Expanded to form message_id */
-extern struct timeval message_id_tv; /* Time used to create last message_id */
extern int message_linecount; /* As it says */
extern BOOL message_logs; /* TRUE to write message logs */
extern int message_size; /* Size of message */
#ifdef SUPPORT_I18N
extern BOOL message_smtputf8; /* Internationalized mail handling */
extern int message_utf8_downconvert; /* convert from utf8 */
-const extern pcre *regex_UTF8; /* For recognizing SMTPUTF8 settings */
+extern const pcre2_code *regex_UTF8; /* For recognizing SMTPUTF8 settings */
#endif
extern uschar message_subdir[]; /* Subdirectory for messages */
-extern uschar *message_reference; /* Reference for error messages */
+extern const uschar *message_reference;/* Reference for error messages */
/* MIME ACL expandables */
#ifdef WITH_CONTENT_SCAN
extern uschar *originator_name; /* Full name of same */
extern uid_t originator_uid; /* Uid of ditto */
extern uschar *override_local_interfaces; /* Value of -oX argument */
-extern uschar *override_pid_file_path; /* Value of -oP argument */
+extern const uschar *override_pid_file_path; /* Value of -oP argument */
+
+extern BOOL panic_coredump; /* SEGV rather than exit, on LOG_PANIC_DIE */
+extern pcre2_general_context * pcre_gen_ctx; /* pcre memory management */
+extern pcre2_compile_context * pcre_gen_cmp_ctx;
+extern pcre2_match_context * pcre_gen_mtc_ctx;
+extern pcre2_general_context * pcre_mlc_ctx;
+extern pcre2_compile_context * pcre_mlc_cmp_ctx;
extern uschar *percent_hack_domains; /* Local domains for which '% operates */
-extern uschar *pid_file_path; /* For writing daemon pids */
+extern const uschar *pid_file_path; /* For writing daemon pids */
#ifndef DISABLE_PIPE_CONNECT
extern uschar *pipe_connect_advertise_hosts; /* for banner/EHLO pipelining */
#endif
extern const uschar *process_purpose; /* for debug output */
extern BOOL prod_requires_admin; /* TRUE if prodding requires admin */
-#if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
+#if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
extern uschar *hosts_proxy; /* Hostlist which (require) use proxy protocol */
extern uschar *proxy_external_address; /* IP of remote interface of proxy */
extern int proxy_external_port; /* Port on remote interface of proxy */
extern uschar *proxy_local_address; /* IP of local interface of proxy */
extern int proxy_local_port; /* Port on local interface of proxy */
-extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy */
+extern int proxy_protocol_timeout; /* Timeout for proxy negotiation */
+extern BOOL proxy_session; /* TRUE if receiving mail from valid proxy
+ or sending via one */
#endif
extern uschar *prvscheck_address; /* Set during prvscheck expansion item */
extern uschar *prvscheck_keynum; /* Set during prvscheck expansion item */
extern uschar *prvscheck_result; /* Set during prvscheck expansion item */
+extern qrunner *qrunners; /* tracking data for queues */
+
extern const uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
extern uschar *qualify_domain_sender; /* Domain to qualify senders with */
extern uschar *queue_domains; /* Queue these domains */
extern tree_node *ratelimiters_conn; /* Results of connection ratelimit checks */
extern tree_node *ratelimiters_mail; /* Results of per-mail ratelimit checks */
extern uschar *raw_active_hostname; /* Pre-expansion */
-extern uschar *raw_sender; /* Before rewriting */
-extern uschar **raw_recipients; /* Before rewriting */
+extern const uschar *raw_sender; /* Before rewriting */
+extern const uschar **raw_recipients; /* Before rewriting */
extern int raw_recipients_count;
extern const uschar * rc_names[]; /* Mostly for debug output */
extern int rcpt_count; /* Count of RCPT commands in a message */
extern int receive_messagecount; /* Mainly for BSMTP errors */
extern int receive_timeout; /* For non-SMTP acceptance */
extern int received_count; /* Count of Received: headers */
-extern uschar *received_for; /* For "for" field */
+extern const uschar *received_for; /* For "for" field */
extern uschar *received_header_text; /* Definition of Received: header */
extern int received_headers_max; /* Max count of Received: headers */
-extern struct timeval received_time; /* Time the message was received */
-extern struct timeval received_time_taken; /* Interval the message took to be received */
+extern struct timeval received_time; /* Time the message started to be received */
+extern struct timeval received_time_complete; /* Time the message completed reception */
extern uschar *recipient_data; /* lookup data for recipients */
extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
extern uschar *recipient_verify_failure; /* What went wrong */
extern int recipients_list_max; /* Maximum number fitting in list */
-extern int recipients_max; /* Max permitted */
+extern uschar *recipients_max; /* Max permitted */
+extern int recipients_max_expanded;
extern BOOL recipients_max_reject; /* If TRUE, reject whole message */
-extern const pcre *regex_AUTH; /* For recognizing AUTH settings */
-extern const pcre *regex_check_dns_names; /* For DNS name checking */
-extern const pcre *regex_From; /* For recognizing "From_" lines */
-extern const pcre *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
-extern const pcre *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
-extern const pcre *regex_PIPELINING; /* For recognizing PIPELINING */
-extern const pcre *regex_SIZE; /* For recognizing SIZE settings */
+extern const pcre2_code *regex_AUTH; /* For recognizing AUTH settings */
+extern const pcre2_code *regex_check_dns_names; /* For DNS name checking */
+extern const pcre2_code *regex_From; /* For recognizing "From_" lines */
+extern const pcre2_code *regex_CHUNKING; /* For recognizing CHUNKING (RFC 3030) */
+extern const pcre2_code *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
+#ifndef DISABLE_ESMTP_LIMITS
+extern const pcre2_code *regex_LIMITS; /* For recognizing LIMITS */
+#endif
+extern const pcre2_code *regex_PIPELINING; /* For recognizing PIPELINING */
+extern const pcre2_code *regex_SIZE; /* For recognizing SIZE settings */
#ifndef DISABLE_PIPE_CONNECT
-extern const pcre *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
+extern const pcre2_code *regex_EARLY_PIPE; /* For recognizing PIPE_CONNCT */
#endif
-extern const pcre *regex_ismsgid; /* Compiled r.e. for message it */
-extern const pcre *regex_smtp_code; /* For recognizing SMTP codes */
-extern uschar *regex_vars[]; /* $regexN variables */
+extern int regex_cachesize; /* number of entries */
+extern const pcre2_code *regex_ismsgid; /* Compiled r.e. for message ID */
+extern const pcre2_code *regex_smtp_code; /* For recognizing SMTP codes */
#ifdef WHITELIST_D_MACROS
-extern const pcre *regex_whitelisted_macro; /* For -D macro values */
+extern const pcre2_code *regex_whitelisted_macro; /* For -D macro values */
#endif
#ifdef WITH_CONTENT_SCAN
extern uschar *regex_match_string; /* regex that matched a line (regex ACL condition) */
+extern const uschar *regex_vars[];
#endif
extern int remote_delivery_count; /* Number of remote addresses */
extern int remote_max_parallel; /* Maximum parallel delivery */
extern int retry_data_expire; /* When to expire retry data */
extern int retry_interval_max; /* Absolute maximum */
extern int retry_maximum_timeout; /* The maximum timeout */
-extern uschar *return_path; /* Return path for a message */
+extern const uschar *return_path; /* Return path for a message */
extern BOOL return_path_remove; /* Remove return-path headers */
extern int rewrite_existflags; /* Indicate which headers have rewrites */
extern uschar *rfc1413_hosts; /* RFC hosts */
extern uschar *self_hostname; /* Self host after routing->directors */
extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
extern uschar *sender_address_data; /* address_data from sender verify */
-extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
+extern const uschar *sender_address_unrewritten; /* Set if rewritten by verify */
extern uschar *sender_data; /* lookup result for senders */
extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
extern uschar *sender_fullhost; /* Sender host name + address */
extern int sending_port; /* Port of outgoing interface */
extern SIGNAL_BOOL sigalrm_seen; /* Flag for sigalrm_handler */
extern const uschar *sigalarm_setter; /* For debug, set to callpoint of alarm() */
-extern uschar **sighup_argv; /* Args for re-execing after SIGHUP */
+extern const uschar **sighup_argv; /* Args for re-execing after SIGHUP */
extern int slow_lookup_log; /* Log DNS lookups taking longer than N millisecs */
extern int smtp_accept_count; /* Count of connections */
extern BOOL smtp_accept_keepalive; /* Set keepalive on incoming */
extern int smtp_accept_max; /* Max SMTP connections */
extern int smtp_accept_max_nonmail;/* Max non-mail commands in one con */
extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
-extern int smtp_accept_max_per_connection; /* Max msgs per connection */
+extern uschar *smtp_accept_max_per_connection; /* Max msgs per connection */
extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
extern int smtp_accept_queue; /* Queue after so many connections */
extern int smtp_accept_queue_per_connection; /* Queue after so many msgs */
extern int smtp_accept_reserve; /* Reserve these SMTP connections */
extern uschar *smtp_active_hostname; /* Hostname for this message */
+extern int smtp_backlog_monitor; /* listen backlog level to log */
extern uschar *smtp_banner; /* Banner string (to be expanded) */
extern BOOL smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
extern int smtp_ch_index; /* Index in smtp_connection_had */
extern uschar *smtp_etrn_command; /* Command to run */
extern BOOL smtp_etrn_serialize; /* Only one at once */
extern FILE *smtp_in; /* Incoming SMTP input file */
+extern int smtp_listen_backlog; /* Current listener socket backlog, if monitored */
extern int smtp_load_reserve; /* Only from reserved if load > this */
extern int smtp_mailcmd_count; /* Count of MAIL commands */
+extern int smtp_mailcmd_max; /* Limit for MAIL commands */
extern int smtp_max_synprot_errors;/* Max syntax/protocol errors */
extern int smtp_max_unknown_commands; /* As it says */
extern uschar *smtp_names[]; /* decode for command codes */
extern FILE *spool_data_file; /* handle for -D file */
extern uschar *spool_directory; /* Name of spool directory */
extern BOOL spool_wireformat; /* can write wireformat -D files */
-#ifdef EXPERIMENTAL_SRS_ALT
-extern uschar *srs_config; /* SRS config secret:max age:hash length:use timestamp:use hash */
-extern uschar *srs_db_address; /* SRS db address */
-extern uschar *srs_db_key; /* SRS db key */
-extern int srs_hashlength; /* SRS hash length */
-extern int srs_hashmin; /* SRS minimum hash length */
-extern int srs_maxage; /* SRS max age */
-extern uschar *srs_orig_sender; /* SRS original sender */
-extern uschar *srs_orig_recipient; /* SRS original recipient */
-extern uschar *srs_recipient; /* SRS recipient */
-extern uschar *srs_secrets; /* SRS secrets list */
-extern uschar *srs_status; /* SRS staus */
-extern BOOL srs_usehash; /* SRS use hash flag */
-extern BOOL srs_usetimestamp; /* SRS use timestamp flag */
-#endif
#ifdef SUPPORT_SRS
extern uschar *srs_recipient; /* SRS recipient */
#endif
extern BOOL syslog_duplication; /* FALSE => no duplicate logging */
extern int syslog_facility; /* As defined by Syslog.h */
extern BOOL syslog_pid; /* TRUE if PID on syslogs */
-extern uschar *syslog_processname; /* 'ident' param to openlog() */
+extern const uschar *syslog_processname; /* 'ident' param to openlog() */
extern BOOL syslog_timestamp; /* TRUE if time on syslogs */
extern uschar *system_filter; /* Name of system filter file */
extern uschar *uucp_from_sender; /* For building the sender */
extern uschar *warn_message_file; /* Template for warning messages */
-extern uschar *warnmsg_delay; /* String form of delay time */
-extern uschar *warnmsg_recipients; /* Recipients of warning message */
+extern const uschar *warnmsg_delay; /* String form of delay time */
+extern const uschar *warnmsg_recipients; /* Recipients of warning message */
extern BOOL write_rejectlog; /* Control of reject logging */
extern uschar *verify_mode; /* Running a router in verify mode */
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