src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
   6 /* Copyright (c) University of Cambridge 1995 - 2018 */
   7 /* See the file NOTICE for conditions of use and distribution. */
   8 /* SPDX-License-Identifier: GPL-2.0-or-later */
   9
  10 /* All the global variables are defined together in this one module, so
  11 that they are easy to find. */
  12
  13 #include "exim.h"
  14
  15
  16 /* Generic options for auths, all of which live inside auth_instance
  17 data blocks and hence have the opt_public flag set. */
  18
  19 optionlist optionlist_auths[] = {
  20   { "client_condition", opt_stringptr | opt_public,
  21                  OPT_OFF(auth_instance, client_condition) },
  22   { "client_set_id", opt_stringptr | opt_public,
  23                  OPT_OFF(auth_instance, set_client_id) },
  24   { "driver",        opt_stringptr | opt_public,
  25                  OPT_OFF(auth_instance, driver_name) },
  26   { "public_name",   opt_stringptr | opt_public,
  27                  OPT_OFF(auth_instance, public_name) },
  28   { "server_advertise_condition", opt_stringptr | opt_public,
  29                  OPT_OFF(auth_instance, advertise_condition)},
  30   { "server_condition", opt_stringptr | opt_public,
  31                  OPT_OFF(auth_instance, server_condition) },
  32   { "server_debug_print", opt_stringptr | opt_public,
  33                  OPT_OFF(auth_instance, server_debug_string) },
  34   { "server_mail_auth_condition", opt_stringptr | opt_public,
  35                  OPT_OFF(auth_instance, mail_auth_condition) },
  36   { "server_set_id", opt_stringptr | opt_public,
  37                  OPT_OFF(auth_instance, set_id) }
  38 };
  39
  40 int     optionlist_auths_size = nelem(optionlist_auths);
  41
  42 /* An empty host aliases list. */
  43
  44 uschar *no_aliases             = NULL;
  45
  46
  47 /* For comments on these variables, see globals.h. I'm too idle to
  48 duplicate them here... */
  49
  50 #ifdef EXIM_PERL
  51 uschar *opt_perl_startup       = NULL;
  52 BOOL    opt_perl_at_start      = FALSE;
  53 BOOL    opt_perl_started       = FALSE;
  54 BOOL    opt_perl_taintmode     = FALSE;
  55 #endif
  56
  57 #ifdef EXPAND_DLFUNC
  58 tree_node *dlobj_anchor        = NULL;
  59 #endif
  60
  61 #ifdef LOOKUP_IBASE
  62 uschar *ibase_servers          = NULL;
  63 #endif
  64
  65 #ifdef LOOKUP_LDAP
  66 uschar *eldap_ca_cert_dir      = NULL;
  67 uschar *eldap_ca_cert_file     = NULL;
  68 uschar *eldap_cert_file        = NULL;
  69 uschar *eldap_cert_key         = NULL;
  70 uschar *eldap_cipher_suite     = NULL;
  71 uschar *eldap_default_servers  = NULL;
  72 uschar *eldap_require_cert     = NULL;
  73 int     eldap_version          = -1;
  74 BOOL    eldap_start_tls        = FALSE;
  75 #endif
  76
  77 #ifdef LOOKUP_MYSQL
  78 uschar *mysql_servers          = NULL;
  79 #endif
  80
  81 #ifdef LOOKUP_ORACLE
  82 uschar *oracle_servers         = NULL;
  83 #endif
  84
  85 #ifdef LOOKUP_PGSQL
  86 uschar *pgsql_servers          = NULL;
  87 #endif
  88
  89 #ifdef LOOKUP_REDIS
  90 uschar *redis_servers          = NULL;
  91 #endif
  92
  93 #ifdef LOOKUP_SQLITE
  94 uschar *sqlite_dbfile          = NULL;
  95 int     sqlite_lock_timeout    = 5;
  96 #endif
  97
  98 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  99 BOOL    move_frozen_messages   = FALSE;
 100 #endif
 101
 102 /* These variables are outside the #ifdef because it keeps the code less
 103 cluttered in several places (e.g. during logging) if we can always refer to
 104 them. Also, the tls_ variables are now always visible.  Note that these are
 105 only used for smtp connections, not for service-daemon access. */
 106
 107 tls_support tls_in = {
 108  .active =              {.sock = -1}
 109  /* all other elements zero */
 110 };
 111 tls_support tls_out = {
 112  .active =              {.sock = -1},
 113  /* all other elements zero */
 114 };
 115
 116 uschar *dsn_envid              = NULL;
 117 int     dsn_ret                = 0;
 118 const pcre2_code  *regex_DSN         = NULL;
 119 uschar *dsn_advertise_hosts    = NULL;
 120
 121 #ifndef DISABLE_TLS
 122 BOOL    gnutls_compat_mode     = FALSE;
 123 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 124 uschar *hosts_require_alpn     = NULL;
 125 uschar *openssl_options        = NULL;
 126 const pcre2_code *regex_STARTTLS     = NULL;
 127 uschar *tls_advertise_hosts    = US"*";
 128 uschar *tls_alpn               = US"smtp:esmtp";
 129 uschar *tls_certificate        = NULL;
 130 uschar *tls_crl                = NULL;
 131 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 132 that's the interop problem which has been observed: GnuTLS suggesting a higher
 133 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 134 int     tls_dh_max_bits        = 2236;
 135 uschar *tls_dhparam            = NULL;
 136 uschar *tls_eccurve            = US"auto";
 137 # ifndef DISABLE_OCSP
 138 uschar *tls_ocsp_file          = NULL;
 139 # endif
 140 uschar *tls_privatekey         = NULL;
 141 BOOL    tls_remember_esmtp     = FALSE;
 142 uschar *tls_require_ciphers    = NULL;
 143 # ifndef DISABLE_TLS_RESUME
 144 uschar *tls_resumption_hosts   = NULL;
 145 # endif
 146 uschar *tls_try_verify_hosts   = NULL;
 147 uschar *tls_verify_certificates= US"system";
 148 uschar *tls_verify_hosts       = NULL;
 149 int     tls_watch_fd           = -1;
 150 time_t  tls_watch_trigger_time = (time_t)0;
 151 #else   /*DISABLE_TLS*/
 152 uschar *tls_advertise_hosts    = NULL;
 153 #endif
 154
 155 #ifndef DISABLE_PRDR
 156 /* Per Recipient Data Response variables */
 157 BOOL    prdr_enable            = FALSE;
 158 BOOL    prdr_requested         = FALSE;
 159 const pcre2_code *regex_PRDR         = NULL;
 160 #endif
 161
 162 #ifdef SUPPORT_I18N
 163 const pcre2_code *regex_UTF8         = NULL;
 164 #endif
 165
 166 /* Input-reading functions for messages, so we can use special ones for
 167 incoming TCP/IP. The defaults use stdin. We never need these for any
 168 stand-alone tests. */
 169
 170 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 171 int     (*lwr_receive_getc)(unsigned)   = stdin_getc;
 172 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 173 int     (*lwr_receive_ungetc)(int)      = stdin_ungetc;
 174 BOOL    (*lwr_receive_hasc)(void)       = stdin_hasc;
 175
 176 int     (*receive_getc)(unsigned)       = stdin_getc;
 177 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 178 void    (*receive_get_cache)(unsigned)  = NULL;
 179 BOOL    (*receive_hasc)(void)           = stdin_hasc;
 180 int     (*receive_ungetc)(int)          = stdin_ungetc;
 181 int     (*receive_feof)(void)           = stdin_feof;
 182 int     (*receive_ferror)(void)         = stdin_ferror;
 183 #endif
 184
 185
 186 /* List of per-address expansion variables for clearing and saving/restoring
 187 when verifying one address while routing/verifying another. We have to have
 188 the size explicit, because it is referenced from more than one module. */
 189
 190 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 191   CUSS &deliver_address_data,
 192   CUSS &deliver_domain,
 193   CUSS &deliver_domain_data,
 194   CUSS &deliver_domain_orig,
 195   CUSS &deliver_domain_parent,
 196   CUSS &deliver_localpart,
 197   CUSS &deliver_localpart_data,
 198   CUSS &deliver_localpart_orig,
 199   CUSS &deliver_localpart_parent,
 200   CUSS &deliver_localpart_prefix,
 201   CUSS &deliver_localpart_suffix,
 202   CUSS (uschar **)(&deliver_recipients),
 203   CUSS &deliver_host,
 204   CUSS &deliver_home,
 205   CUSS &address_file,
 206   CUSS &address_pipe,
 207   CUSS &self_hostname,
 208   NULL };
 209
 210 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 211
 212 /******************************************************************************/
 213 /* General global variables.  Boolean flags are done as a group
 214 so that only one bit each is needed, packed, for all those we never
 215 need to take a pointer - and only a char for the rest.
 216 This means a struct, unfortunately since it clutters the sourcecode. */
 217
 218 struct global_flags f =
 219 {
 220         .acl_temp_details       = FALSE,
 221         .active_local_from_check = FALSE,
 222         .active_local_sender_retain = FALSE,
 223         .address_test_mode      = FALSE,
 224         .admin_user             = FALSE,
 225         .allow_auth_unadvertised= FALSE,
 226         .allow_unqualified_recipient = TRUE,    /* For local messages */
 227         .allow_unqualified_sender = TRUE,       /* Reset for SMTP */
 228         .authentication_local   = FALSE,
 229
 230         .background_daemon      = TRUE,
 231         .bdat_readers_wanted    = FALSE,
 232
 233         .chunking_offered       = FALSE,
 234         .config_changed         = FALSE,
 235         .continue_more          = FALSE,
 236
 237         .daemon_listen          = FALSE,
 238         .daemon_scion           = FALSE,
 239         .debug_daemon           = FALSE,
 240         .deliver_firsttime      = FALSE,
 241         .deliver_force          = FALSE,
 242         .deliver_freeze         = FALSE,
 243         .deliver_force_thaw     = FALSE,
 244         .deliver_manual_thaw    = FALSE,
 245         .deliver_selectstring_regex = FALSE,
 246         .deliver_selectstring_sender_regex = FALSE,
 247         .disable_callout_flush  = FALSE,
 248         .disable_delay_flush    = FALSE,
 249         .disable_logging        = FALSE,
 250 #ifndef DISABLE_DKIM
 251         .dkim_disable_verify      = FALSE,
 252         .dkim_init_done           = FALSE,
 253 #endif
 254 #ifdef SUPPORT_DMARC
 255         .dmarc_has_been_checked  = FALSE,
 256         .dmarc_disable_verify    = FALSE,
 257         .dmarc_enable_forensic   = FALSE,
 258 #endif
 259         .dont_deliver           = FALSE,
 260         .dot_ends               = TRUE,
 261
 262         .enable_dollar_recipients = FALSE,
 263         .expand_string_forcedfail = FALSE,
 264
 265         .filter_running         = FALSE,
 266
 267         .header_rewritten       = FALSE,
 268         .helo_verified          = FALSE,
 269         .helo_verify_failed     = FALSE,
 270         .host_checking_callout  = FALSE,
 271         .host_find_failed_syntax= FALSE,
 272
 273         .inetd_wait_mode        = FALSE,
 274         .is_inetd               = FALSE,
 275
 276         .local_error_message    = FALSE,
 277         .log_testing_mode       = FALSE,
 278
 279 #ifdef WITH_CONTENT_SCAN
 280         .no_mbox_unspool        = FALSE,
 281 #endif
 282         .no_multiline_responses = FALSE,
 283         .notifier_socket_en     = TRUE,
 284
 285         .parse_allow_group      = FALSE,
 286         .parse_found_group      = FALSE,
 287         .pipelining_enable      = TRUE,
 288 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 289         .proxy_session_failed   = FALSE,
 290 #endif
 291
 292         .queue_2stage           = FALSE,
 293         .queue_only_policy      = FALSE,
 294         .queue_run_local        = FALSE,
 295         .queue_running          = FALSE,
 296         .queue_smtp             = FALSE,
 297
 298         .really_exim            = TRUE,
 299         .receive_call_bombout   = FALSE,
 300         .recipients_discarded   = FALSE,
 301         .running_in_test_harness = FALSE,
 302
 303         .search_find_defer      = FALSE,
 304         .sender_address_forced  = FALSE,
 305         .sender_host_notsocket  = FALSE,
 306         .sender_host_unknown    = FALSE,
 307         .sender_local           = FALSE,
 308         .sender_name_forced     = FALSE,
 309         .sender_set_untrusted   = FALSE,
 310         .smtp_authenticated     = FALSE,
 311 #ifndef DISABLE_PIPE_CONNECT
 312         .smtp_in_early_pipe_advertised = FALSE,
 313         .smtp_in_early_pipe_no_auth = FALSE,
 314         .smtp_in_early_pipe_used = FALSE,
 315 #endif
 316         .smtp_in_pipelining_advertised = FALSE,
 317         .smtp_in_pipelining_used = FALSE,
 318         .smtp_in_quit           = FALSE,
 319         .spool_file_wireformat  = FALSE,
 320         .submission_mode        = FALSE,
 321         .suppress_local_fixups  = FALSE,
 322         .suppress_local_fixups_default = FALSE,
 323         .synchronous_delivery   = FALSE,
 324         .system_filtering       = FALSE,
 325
 326         .taint_check_slow       = FALSE,
 327         .testsuite_delays       = TRUE,
 328         .tcp_fastopen_ok        = FALSE,
 329         .tcp_in_fastopen        = FALSE,
 330         .tcp_in_fastopen_data   = FALSE,
 331         .tcp_in_fastopen_logged = FALSE,
 332         .tcp_out_fastopen_logged= FALSE,
 333         .timestamps_utc         = FALSE,
 334         .transport_filter_timed_out = FALSE,
 335         .trusted_caller         = FALSE,
 336         .trusted_config         = TRUE,
 337 };
 338
 339 /******************************************************************************/
 340 /* These are the flags which are either variables or mainsection options,
 341 so an address is needed for access, or are exported to local_scan. */
 342
 343 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 344 BOOL    allow_domain_literals  = FALSE;
 345 BOOL    allow_mx_to_ip         = FALSE;
 346 BOOL    allow_utf8_domains     = FALSE;
 347 BOOL    authentication_failed  = FALSE;
 348
 349 BOOL    bounce_return_body     = TRUE;
 350 BOOL    bounce_return_message  = TRUE;
 351 BOOL    check_rfc2047_length   = TRUE;
 352 BOOL    commandline_checks_require_admin = FALSE;
 353
 354 #ifdef EXPERIMENTAL_DCC
 355 BOOL    dcc_direct_add_header  = FALSE;
 356 #endif
 357 BOOL    debug_store            = FALSE;
 358 BOOL    delivery_date_remove   = TRUE;
 359 BOOL    deliver_drop_privilege = FALSE;
 360 #ifdef ENABLE_DISABLE_FSYNC
 361 BOOL    disable_fsync          = FALSE;
 362 #endif
 363 BOOL    disable_ipv6           = FALSE;
 364 BOOL    dns_csa_use_reverse    = TRUE;
 365 BOOL    drop_cr                = FALSE;         /* No longer used */
 366
 367 BOOL    envelope_to_remove     = TRUE;
 368 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 369 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 370 BOOL    extract_addresses_remove_arguments = TRUE;
 371
 372 BOOL    host_checking          = FALSE;
 373 BOOL    host_lookup_deferred   = FALSE;
 374 BOOL    host_lookup_failed     = FALSE;
 375 BOOL    ignore_fromline_local  = FALSE;
 376
 377 BOOL    local_from_check       = TRUE;
 378 BOOL    local_sender_retain    = FALSE;
 379 BOOL    log_timezone           = FALSE;
 380 BOOL    message_body_newlines  = FALSE;
 381 BOOL    message_logs           = TRUE;
 382 #ifdef SUPPORT_I18N
 383 BOOL    message_smtputf8       = FALSE;
 384 #endif
 385 BOOL    mua_wrapper            = FALSE;
 386
 387 BOOL    preserve_message_logs  = FALSE;
 388 BOOL    print_topbitchars      = FALSE;
 389 BOOL    prod_requires_admin    = TRUE;
 390 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
 391 BOOL    proxy_session          = FALSE;
 392 #endif
 393
 394 #ifndef DISABLE_QUEUE_RAMP
 395 BOOL    queue_fast_ramp         = TRUE;
 396 #endif
 397 BOOL    queue_list_requires_admin = TRUE;
 398 BOOL    queue_only             = FALSE;
 399 BOOL    queue_only_load_latch  = TRUE;
 400 BOOL    queue_only_override    = TRUE;
 401 BOOL    queue_run_in_order     = FALSE;
 402 BOOL    recipients_max_reject  = FALSE;
 403 BOOL    return_path_remove     = TRUE;
 404
 405 BOOL    smtp_batched_input     = FALSE;
 406 BOOL    sender_helo_dnssec     = FALSE;
 407 BOOL    sender_host_dnssec     = FALSE;
 408 BOOL    smtp_accept_keepalive  = TRUE;
 409 BOOL    smtp_check_spool_space = TRUE;
 410 BOOL    smtp_enforce_sync      = TRUE;
 411 BOOL    smtp_etrn_serialize    = TRUE;
 412 BOOL    smtp_input             = FALSE;
 413 BOOL    smtp_return_error_details = FALSE;
 414 #ifdef SUPPORT_SPF
 415 BOOL    spf_result_guessed     = FALSE;
 416 #endif
 417 BOOL    split_spool_directory  = FALSE;
 418 BOOL    spool_wireformat       = FALSE;
 419 BOOL    strict_acl_vars        = FALSE;
 420 BOOL    strip_excess_angle_brackets = FALSE;
 421 BOOL    strip_trailing_dot     = FALSE;
 422 BOOL    syslog_duplication     = TRUE;
 423 BOOL    syslog_pid             = TRUE;
 424 BOOL    syslog_timestamp       = TRUE;
 425 BOOL    system_filter_gid_set  = FALSE;
 426 BOOL    system_filter_uid_set  = FALSE;
 427
 428 BOOL    tcp_nodelay            = TRUE;
 429 BOOL    write_rejectlog        = TRUE;
 430
 431 /******************************************************************************/
 432
 433 header_line *acl_added_headers = NULL;
 434 tree_node *acl_anchor          = NULL;
 435 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 436                                   NULL, NULL, NULL, NULL};
 437 int     acl_narg               = 0;
 438
 439 int     acl_level              = 0;
 440
 441 uschar *acl_not_smtp           = NULL;
 442 #ifdef WITH_CONTENT_SCAN
 443 uschar *acl_not_smtp_mime      = NULL;
 444 #endif
 445 uschar *acl_not_smtp_start     = NULL;
 446 uschar *acl_removed_headers    = NULL;
 447 uschar *acl_smtp_auth          = NULL;
 448 uschar *acl_smtp_connect       = NULL;
 449 uschar *acl_smtp_data          = NULL;
 450 #ifndef DISABLE_PRDR
 451 uschar *acl_smtp_data_prdr     = US"accept";
 452 #endif
 453 #ifndef DISABLE_DKIM
 454 uschar *acl_smtp_dkim          = NULL;
 455 #endif
 456 uschar *acl_smtp_etrn          = NULL;
 457 uschar *acl_smtp_expn          = NULL;
 458 uschar *acl_smtp_helo          = NULL;
 459 uschar *acl_smtp_mail          = NULL;
 460 uschar *acl_smtp_mailauth      = NULL;
 461 #ifdef WITH_CONTENT_SCAN
 462 uschar *acl_smtp_mime          = NULL;
 463 #endif
 464 uschar *acl_smtp_notquit       = NULL;
 465 uschar *acl_smtp_predata       = NULL;
 466 uschar *acl_smtp_quit          = NULL;
 467 uschar *acl_smtp_rcpt          = NULL;
 468 uschar *acl_smtp_starttls      = NULL;
 469 uschar *acl_smtp_vrfy          = NULL;
 470 #ifndef DISABLE_WELLKNOWN
 471 uschar *acl_smtp_wellknown     = NULL;
 472 #endif
 473
 474 tree_node *acl_var_c           = NULL;
 475 tree_node *acl_var_m           = NULL;
 476 uschar *acl_verify_message     = NULL;
 477 string_item *acl_warn_logged   = NULL;
 478
 479 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 480 error codes (only those used) */
 481
 482 uschar *acl_wherenames[]       = { [ACL_WHERE_RCPT] =           US"RCPT",
 483                                    [ACL_WHERE_MAIL] =           US"MAIL",
 484                                    [ACL_WHERE_PREDATA] =        US"PREDATA",
 485                                    [ACL_WHERE_MIME] =           US"MIME",
 486                                    [ACL_WHERE_DKIM] =           US"DKIM",
 487                                    [ACL_WHERE_DATA] =           US"DATA",
 488 #ifndef DISABLE_PRDR
 489                                    [ACL_WHERE_PRDR] =           US"PRDR",
 490 #endif
 491                                    [ACL_WHERE_NOTSMTP] =        US"non-SMTP",
 492                                    [ACL_WHERE_AUTH] =           US"AUTH",
 493                                    [ACL_WHERE_CONNECT] =        US"connection",
 494                                    [ACL_WHERE_ETRN] =           US"ETRN",
 495                                    [ACL_WHERE_EXPN] =           US"EXPN",
 496                                    [ACL_WHERE_HELO] =           US"EHLO or HELO",
 497                                    [ACL_WHERE_MAILAUTH] =       US"MAILAUTH",
 498                                    [ACL_WHERE_NOTSMTP_START] =  US"non-SMTP-start",
 499                                    [ACL_WHERE_NOTQUIT] =        US"NOTQUIT",
 500                                    [ACL_WHERE_QUIT] =           US"QUIT",
 501                                    [ACL_WHERE_STARTTLS] =       US"STARTTLS",
 502                                    [ACL_WHERE_VRFY] =           US"VRFY",
 503 #ifndef DISABLE_WELLKNOWN
 504                                    [ACL_WHERE_WELLKNOWN] =      US"WELLKNOWN",
 505 #endif
 506                                    [ACL_WHERE_DELIVERY] =       US"delivery",
 507                                    [ACL_WHERE_UNKNOWN] =        US"unknown"
 508                                  };
 509
 510 uschar *acl_wherecodes[]       = { [ACL_WHERE_RCPT] =   US"550",
 511                                    [ACL_WHERE_MAIL] =   US"550",
 512                                    [ACL_WHERE_PREDATA] = US"550",
 513                                    [ACL_WHERE_MIME] =   US"550",
 514                                    [ACL_WHERE_DKIM] =   US"550",
 515                                    [ACL_WHERE_DATA] =   US"550",
 516 #ifndef DISABLE_PRDR
 517                                    [ACL_WHERE_PRDR] =   US"550",
 518 #endif
 519                                    [ACL_WHERE_AUTH] =   US"503",
 520                                    [ACL_WHERE_CONNECT] = US"550",
 521                                    [ACL_WHERE_ETRN] =   US"458",
 522                                    [ACL_WHERE_EXPN] =   US"550",
 523                                    [ACL_WHERE_HELO] =   US"550",
 524                                    [ACL_WHERE_STARTTLS] = US"550",
 525 #ifndef DISABLE_WELLKNOWN
 526                                    [ACL_WHERE_WELLKNOWN] =US"550",
 527 #endif
 528                                    [ACL_WHERE_VRFY] =   US"252",
 529                                  };
 530
 531 uschar *add_environment        = NULL;
 532 address_item  *addr_duplicate  = NULL;
 533
 534 address_item address_defaults = {
 535   .next =               NULL,
 536   .parent =             NULL,
 537   .first =              NULL,
 538   .dupof =              NULL,
 539   .start_router =       NULL,
 540   .router =             NULL,
 541   .transport =          NULL,
 542   .host_list =          NULL,
 543   .host_used =          NULL,
 544   .fallback_hosts =     NULL,
 545   .reply =              NULL,
 546   .retries =            NULL,
 547   .address =            NULL,
 548   .unique =             NULL,
 549   .cc_local_part =      NULL,
 550   .lc_local_part =      NULL,
 551   .local_part =         NULL,
 552   .prefix =             NULL,
 553   .prefix_v =           NULL,
 554   .suffix =             NULL,
 555   .suffix_v =           NULL,
 556   .domain =             NULL,
 557   .address_retry_key =  NULL,
 558   .domain_retry_key =   NULL,
 559   .current_dir =        NULL,
 560   .home_dir =           NULL,
 561   .message =            NULL,
 562   .user_message =       NULL,
 563   .onetime_parent =     NULL,
 564   .pipe_expandn =       NULL,
 565   .return_filename =    NULL,
 566   .self_hostname =      NULL,
 567   .shadow_message =     NULL,
 568 #ifndef DISABLE_TLS
 569   .cipher =             NULL,
 570   .ourcert =            NULL,
 571   .peercert =           NULL,
 572   .peerdn =             NULL,
 573   .ocsp =               OCSP_NOT_REQ,
 574 #endif
 575 #ifdef EXPERIMENTAL_DSN_INFO
 576   .smtp_greeting =      NULL,
 577   .helo_response =      NULL,
 578 #endif
 579   .authenticator =      NULL,
 580   .auth_id =            NULL,
 581   .auth_sndr =          NULL,
 582   .dsn_orcpt =          NULL,
 583   .dsn_flags =          0,
 584   .dsn_aware =          0,
 585   .uid =                (uid_t)(-1),
 586   .gid =                (gid_t)(-1),
 587   .flags =              { 0 },
 588   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 589   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 590   .mode =               -1,
 591   .more_errno =         0,
 592   .delivery_time =      {.tv_sec = 0, .tv_usec = 0},
 593   .basic_errno =        ERRNO_UNKNOWNERROR,
 594   .child_count =        0,
 595   .return_file =        -1,
 596   .special_action =     SPECIAL_NONE,
 597   .transport_return =   DEFER,
 598   .prop = {                                     /* fields that are propagated to children */
 599     .address_data =     NULL,
 600     .domain_data =      NULL,
 601     .localpart_data =   NULL,
 602     .errors_address =   NULL,
 603     .extra_headers =    NULL,
 604     .remove_headers =   NULL,
 605     .variables =        NULL,
 606     .ignore_error =     FALSE,
 607 #ifdef SUPPORT_I18N
 608     .utf8_msg =         FALSE,
 609     .utf8_downcvt =     FALSE,
 610     .utf8_downcvt_maybe = FALSE
 611 #endif
 612   }
 613 };
 614
 615 const uschar *address_file           = NULL;
 616 const uschar *address_pipe           = NULL;
 617 tree_node *addresslist_anchor  = NULL;
 618 int     addresslist_count      = 0;
 619 gid_t  *admin_groups           = NULL;
 620
 621 #ifdef EXPERIMENTAL_ARC
 622 struct arc_set *arc_received    = NULL;
 623 int     arc_received_instance   = 0;
 624 int     arc_oldest_pass         = 0;
 625 const uschar *arc_state         = NULL;
 626 const uschar *arc_state_reason  = NULL;
 627 #endif
 628
 629 uschar *authenticated_fail_id  = NULL;
 630 uschar *authenticated_id       = NULL;
 631 uschar *authenticated_sender   = NULL;
 632 auth_instance  *auths          = NULL;
 633 uschar *auth_advertise_hosts   = US"*";
 634 auth_instance auth_defaults    = {
 635     .next =             NULL,
 636     .name =             NULL,
 637     .info =             NULL,
 638     .options_block =    NULL,
 639     .driver_name =      NULL,
 640     .advertise_condition = NULL,
 641     .client_condition = NULL,
 642     .public_name =      NULL,
 643     .set_id =           NULL,
 644     .set_client_id =    NULL,
 645     .mail_auth_condition = NULL,
 646     .server_debug_string = NULL,
 647     .server_condition = NULL,
 648     .client =           FALSE,
 649     .server =           FALSE,
 650     .advertised =       FALSE
 651 };
 652
 653 uschar *auth_defer_msg         = US"reason not recorded";
 654 uschar *auth_defer_user_msg    = US"";
 655 const uschar *auth_vars[AUTH_VARS];
 656 uschar *authenticator_name     = NULL;
 657 int     auto_thaw              = 0;
 658 #ifdef WITH_CONTENT_SCAN
 659 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 660 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 661 #endif
 662
 663 #if BASE_62 == 62
 664 uschar *base62_chars=
 665     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 666 #else
 667 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 668 #endif
 669
 670 uschar *bi_command             = NULL;
 671 uschar *big_buffer             = NULL;
 672 int     big_buffer_size        = BIG_BUFFER_SIZE;
 673 #ifdef EXPERIMENTAL_BRIGHTMAIL
 674 uschar *bmi_alt_location       = NULL;
 675 uschar *bmi_base64_tracker_verdict = NULL;
 676 uschar *bmi_base64_verdict     = NULL;
 677 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 678 int     bmi_deliver            = 1;
 679 int     bmi_run                = 0;
 680 uschar *bmi_verdicts           = NULL;
 681 #endif
 682 int     bsmtp_transaction_linecount = 0;
 683 int     body_8bitmime          = 0;
 684 int     body_linecount         = 0;
 685 int     body_zerocount         = 0;
 686 uschar *bounce_message_file    = NULL;
 687 uschar *bounce_message_text    = NULL;
 688 const uschar *bounce_recipient = NULL;
 689 int     bounce_return_linesize_limit = 998;
 690 int     bounce_return_size_limit = 100*1024;
 691 uschar *bounce_sender_authentication = NULL;
 692
 693 uschar *callout_address        = NULL;
 694 int     callout_cache_domain_positive_expire = 7*24*60*60;
 695 int     callout_cache_domain_negative_expire = 3*60*60;
 696 int     callout_cache_positive_expire = 24*60*60;
 697 int     callout_cache_negative_expire = 2*60*60;
 698 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 699 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 700 int     check_log_inodes       = 100;
 701 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 702 int     check_spool_inodes     = 100;
 703 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 704
 705 uschar *chunking_advertise_hosts = US"*";
 706 unsigned chunking_datasize     = 0;
 707 unsigned chunking_data_left    = 0;
 708 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 709 const pcre2_code *regex_CHUNKING     = NULL;
 710
 711 #ifndef DISABLE_ESMTP_LIMITS
 712 const pcre2_code *regex_LIMITS        = NULL;
 713 #endif
 714
 715 uschar *client_authenticator   = NULL;
 716 uschar *client_authenticated_id = NULL;
 717 uschar *client_authenticated_sender = NULL;
 718 #ifndef DISABLE_CLIENT_CMD_LOG
 719 gstring *client_cmd_log        = NULL;
 720 #endif
 721 int     clmacro_count          = 0;
 722 uschar *clmacros[MAX_CLMACROS];
 723 FILE   *config_file            = NULL;
 724 const uschar *config_filename  = NULL;
 725 int     config_lineno          = 0;
 726 #ifdef CONFIGURE_GROUP
 727 gid_t   config_gid             = CONFIGURE_GROUP;
 728 #else
 729 gid_t   config_gid             = 0;
 730 #endif
 731 const uschar * config_main_filelist = US CONFIGURE_FILE
 732                          "\0<-----------Space to patch configure_filename->";
 733 uschar *config_main_filename   = NULL;
 734 uschar *config_main_directory  = NULL;
 735
 736 #ifdef CONFIGURE_OWNER
 737 uid_t   config_uid             = CONFIGURE_OWNER;
 738 #else
 739 uid_t   config_uid             = 0;
 740 #endif
 741
 742 uint64_t connection_id         = 0L;
 743 int     connection_max_messages= -1;
 744 uschar *continue_proxy_cipher  = NULL;
 745 BOOL    continue_proxy_dane    = FALSE;
 746 uschar *continue_proxy_sni     = NULL;
 747 uschar *continue_hostname      = NULL;
 748 uschar *continue_host_address  = NULL;
 749 int     continue_sequence      = 1;
 750 uschar *continue_transport     = NULL;
 751 #ifndef DISABLE_ESMTP_LIMITS
 752 unsigned continue_limit_mail   = 0;
 753 unsigned continue_limit_rcpt   = 0;
 754 unsigned continue_limit_rcptdom= 0;
 755 #endif
 756
 757 uschar *csa_status             = NULL;
 758 cut_t   cutthrough = {
 759   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 760   .delivery =           FALSE,                          /* when to attempt */
 761   .defer_pass =         FALSE,                          /* on defer: spool locally */
 762   .is_tls =             FALSE,                          /* not a TLS conn yet */
 763   .cctx =               {.sock = -1},                   /* open connection */
 764   .nrcpt =              0,                              /* number of addresses */
 765 };
 766
 767 int     daemon_notifier_fd     = -1;
 768 uschar *daemon_smtp_port       = US"smtp";
 769 int     daemon_startup_retries = 9;
 770 int     daemon_startup_sleep   = 30;
 771
 772 #ifdef EXPERIMENTAL_DCC
 773 uschar *dcc_header             = NULL;
 774 uschar *dcc_result             = NULL;
 775 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 776 uschar *dccifd_options         = US"header";
 777 #endif
 778
 779 int     debug_fd               = -1;
 780 FILE   *debug_file             = NULL;
 781 int     debug_notall[]         = {
 782   Di_memory,
 783   Di_noutf8,
 784   -1
 785 };
 786 bit_table debug_options[]      = { /* must be in alphabetical order and use
 787                                  only the enum values from macro.h */
 788   BIT_TABLE(D, acl),
 789   BIT_TABLE(D, all),
 790   BIT_TABLE(D, auth),
 791   BIT_TABLE(D, deliver),
 792   BIT_TABLE(D, dns),
 793   BIT_TABLE(D, dnsbl),
 794   BIT_TABLE(D, exec),
 795   BIT_TABLE(D, expand),
 796   BIT_TABLE(D, filter),
 797   BIT_TABLE(D, hints_lookup),
 798   BIT_TABLE(D, host_lookup),
 799   BIT_TABLE(D, ident),
 800   BIT_TABLE(D, interface),
 801   BIT_TABLE(D, lists),
 802   BIT_TABLE(D, load),
 803   BIT_TABLE(D, local_scan),
 804   BIT_TABLE(D, lookup),
 805   BIT_TABLE(D, memory),
 806   BIT_TABLE(D, noutf8),
 807   BIT_TABLE(D, pid),
 808   BIT_TABLE(D, process_info),
 809   BIT_TABLE(D, queue_run),
 810   BIT_TABLE(D, receive),
 811   BIT_TABLE(D, resolver),
 812   BIT_TABLE(D, retry),
 813   BIT_TABLE(D, rewrite),
 814   BIT_TABLE(D, route),
 815   BIT_TABLE(D, timestamp),
 816   BIT_TABLE(D, tls),
 817   BIT_TABLE(D, transport),
 818   BIT_TABLE(D, uid),
 819   BIT_TABLE(D, verify),
 820 };
 821 int      debug_options_count    = nelem(debug_options);
 822 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 823 unsigned debug_pretrigger_bsize = 0;
 824 uschar * debug_pretrigger_buf   = NULL;
 825 unsigned int debug_selector     = 0;
 826
 827 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 828 uschar *delay_warning_condition=
 829   US"${if or {"
 830             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 831             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 832             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 833             "} {no}{yes}}";
 834 uschar *deliver_address_data   = NULL;
 835 int     deliver_datafile       = -1;
 836 const uschar *deliver_domain   = NULL;
 837 uschar *deliver_domain_data    = NULL;
 838 const uschar *deliver_domain_orig = NULL;
 839 const uschar *deliver_domain_parent = NULL;
 840 time_t  deliver_frozen_at      = 0;
 841 uschar *deliver_home           = NULL;
 842 const uschar *deliver_host     = NULL;
 843 const uschar *deliver_host_address = NULL;
 844 int     deliver_host_port      = 0;
 845 uschar *deliver_in_buffer      = NULL;
 846 ino_t   deliver_inode          = 0;
 847 const uschar *deliver_localpart= NULL;
 848 uschar *deliver_localpart_data = NULL;
 849 const uschar *deliver_localpart_orig = NULL;
 850 const uschar *deliver_localpart_parent = NULL;
 851 const uschar *deliver_localpart_prefix = NULL;
 852 const uschar *deliver_localpart_prefix_v = NULL;
 853 const uschar *deliver_localpart_suffix = NULL;
 854 const uschar *deliver_localpart_suffix_v = NULL;
 855 uschar *deliver_out_buffer     = NULL;
 856 int     deliver_queue_load_max = -1;
 857 address_item  *deliver_recipients = NULL;
 858 uschar *deliver_selectstring   = NULL;
 859 uschar *deliver_selectstring_sender = NULL;
 860
 861 #ifndef DISABLE_DKIM
 862 unsigned dkim_collect_input      = 0;
 863 uschar *dkim_cur_signer          = NULL;
 864 int     dkim_key_length          = 0;
 865 void   *dkim_signatures          = NULL;
 866 uschar *dkim_signers             = NULL;
 867 uschar *dkim_signing_domain      = NULL;
 868 uschar *dkim_signing_selector    = NULL;
 869 gstring *dkim_signing_record     = NULL;
 870 uschar *dkim_verify_hashes       = US"sha256:sha512";
 871 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 872 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 873 BOOL    dkim_verify_minimal      = FALSE;
 874 uschar *dkim_verify_overall      = NULL;
 875 uschar *dkim_verify_signers      = US"$dkim_signers";
 876 uschar *dkim_verify_status       = NULL;
 877 uschar *dkim_verify_reason       = NULL;
 878 #endif
 879 #ifdef SUPPORT_DMARC
 880 uschar *dmarc_domain_policy     = NULL;
 881 uschar *dmarc_forensic_sender   = NULL;
 882 uschar *dmarc_history_file      = NULL;
 883 uschar *dmarc_status            = NULL;
 884 uschar *dmarc_status_text       = NULL;
 885 uschar *dmarc_tld_file          = NULL;
 886 uschar *dmarc_used_domain       = NULL;
 887 #endif
 888
 889 uschar *dns_again_means_nonexist = NULL;
 890 int     dns_csa_search_limit   = 5;
 891 int     dns_cname_loops        = 1;
 892 #ifdef SUPPORT_DANE
 893 int     dns_dane_ok            = -1;
 894 #endif
 895 uschar *dns_ipv4_lookup        = NULL;
 896 int     dns_retrans            = 0;
 897 int     dns_retry              = 0;
 898 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 899 uschar *dns_trust_aa           = NULL;
 900 int     dns_use_edns0          = -1; /* <0 = not coerced */
 901 uschar *dnslist_domain         = NULL;
 902 uschar *dnslist_matched        = NULL;
 903 uschar *dnslist_text           = NULL;
 904 uschar *dnslist_value          = NULL;
 905 tree_node *domainlist_anchor   = NULL;
 906 int     domainlist_count       = 0;
 907 const uschar *driver_srcfile   = NULL;
 908 int     driver_srcline         = 0;
 909 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 910 unsigned int dtrigger_selector = 0;
 911
 912 int     errno_quota            = ERRNO_QUOTA;
 913 uschar *errors_copy            = NULL;
 914 int     error_handling         = ERRORS_SENDER;
 915 uschar *errors_reply_to        = NULL;
 916 int     errors_sender_rc       = EXIT_FAILURE;
 917 #ifndef DISABLE_EVENT
 918 uschar *event_action           = NULL;  /* expansion for delivery events */
 919 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 920 int     event_defer_errno      = 0;
 921 const uschar *event_name       = NULL;  /* event name variable */
 922 #endif
 923
 924
 925 gid_t   exim_gid               = EXIM_GID;
 926 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 927                         "\0<---------------Space to patch exim_path->";
 928 uid_t   exim_uid               = EXIM_UID;
 929 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 930 int     expand_forbid          = 0;
 931 int     expand_nlength[EXPAND_MAXN+1];
 932 int     expand_nmax            = -1;
 933 const uschar *expand_nstring[EXPAND_MAXN+1];
 934 uschar *expand_string_message;
 935 uschar *extra_local_interfaces = NULL;
 936
 937 int     fake_response          = OK;
 938 uschar *fake_response_text     = US"Your message has been rejected but is "
 939                                    "being kept for evaluation.\nIf it was a "
 940                                    "legitimate message, it may still be "
 941                                    "delivered to the target recipient(s).";
 942 int     filter_n[FILTER_VARIABLE_COUNT];
 943 int     filter_sn[FILTER_VARIABLE_COUNT];
 944 int     filter_test            = FTEST_NONE;
 945 const uschar * filter_test_sfile = NULL;
 946 const uschar * filter_test_ufile = NULL;
 947 uschar *filter_thisaddress     = NULL;
 948 int     finduser_retries       = 0;
 949 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 950 uschar *freeze_tell            = NULL;
 951 uschar *freeze_tell_config     = NULL;
 952 uschar *fudged_queue_times     = US"";
 953
 954 uschar *gecos_name             = NULL;
 955 uschar *gecos_pattern          = NULL;
 956 rewrite_rule  *global_rewrite_rules = NULL;
 957
 958 volatile sig_atomic_t had_command_timeout = 0;
 959 volatile sig_atomic_t had_command_sigterm = 0;
 960 volatile sig_atomic_t had_data_timeout    = 0;
 961 volatile sig_atomic_t had_data_sigint     = 0;
 962 const uschar *headers_charset  = US HEADERS_CHARSET;
 963 int     header_insert_maxlen   = 64 * 1024;
 964 header_line  *header_last      = NULL;
 965 header_line  *header_list      = NULL;
 966 int     header_maxsize         = HEADER_MAXSIZE;
 967 int     header_line_maxsize    = 0;
 968
 969 header_name header_names[] = {
 970   /* name               len     allow_resent    htype */
 971   { US"bcc",            3,      TRUE,           htype_bcc },
 972   { US"cc",             2,      TRUE,           htype_cc },
 973   { US"date",           4,      TRUE,           htype_date },
 974   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 975   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 976   { US"from",           4,      TRUE,           htype_from },
 977   { US"message-id",    10,      TRUE,           htype_id },
 978   { US"received",       8,      FALSE,          htype_received },
 979   { US"reply-to",       8,      FALSE,          htype_reply_to },
 980   { US"return-path",   11,      FALSE,          htype_return_path },
 981   { US"sender",         6,      TRUE,           htype_sender },
 982   { US"subject",        7,      FALSE,          htype_subject },
 983   { US"to",             2,      TRUE,           htype_to }
 984 };
 985
 986 int header_names_size          = nelem(header_names);
 987
 988 uschar *helo_accept_junk_hosts = NULL;
 989 uschar *helo_allow_chars       = US"";
 990 uschar *helo_lookup_domains    = US"@ : @[]";
 991 uschar *helo_try_verify_hosts  = NULL;
 992 uschar *helo_verify_hosts      = NULL;
 993 const uschar *hex_digits       = CUS"0123456789abcdef";
 994 uschar *hold_domains           = NULL;
 995 uschar *host_data              = NULL;
 996 uschar *host_lookup            = NULL;
 997 uschar *host_lookup_order      = US"bydns:byaddr";
 998 uschar *host_lookup_msg        = US"";
 999 int     host_number            = 0;
1000 uschar *host_number_string     = NULL;
1001 uschar *host_reject_connection = NULL;
1002 uschar *hosts_connection_nolog = NULL;
1003 #ifdef SUPPORT_PROXY
1004 uschar *hosts_proxy            = NULL;
1005 #endif
1006 uschar *hosts_treat_as_local   = NULL;
1007 uschar *hosts_require_helo     = US"*";
1008 #ifdef EXPERIMENTAL_XCLIENT
1009 uschar *hosts_xclient          = NULL;
1010 #endif
1011 tree_node *hostlist_anchor     = NULL;
1012 int     hostlist_count         = 0;
1013
1014
1015 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1016 uschar *ignore_fromline_hosts  = NULL;
1017 int     inetd_wait_timeout     = -1;
1018 uschar *initial_cwd            = NULL;
1019 uschar *interface_address      = NULL;
1020 int     interface_port         = -1;
1021 uschar *iterate_item           = NULL;
1022
1023 int     journal_fd             = -1;
1024
1025 uschar *keep_environment       = NULL;
1026
1027 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1028
1029 uschar *eldap_dn               = NULL;
1030 const uschar *letter_digit_hyphen_dot =
1031     US"abcdefghijklmnopqrstuvwxyz"
1032       ".-0123456789"
1033       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1034 #ifndef DISABLE_ESMTP_LIMITS
1035 uschar *limits_advertise_hosts = US"*";
1036 #endif
1037 int     load_average           = -2;
1038 uschar *local_from_prefix      = NULL;
1039 uschar *local_from_suffix      = NULL;
1040
1041 #if HAVE_IPV6
1042 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1043 #else
1044 uschar *local_interfaces       = US"0.0.0.0";
1045 #endif
1046
1047 #ifdef HAVE_LOCAL_SCAN
1048 uschar *local_scan_data        = NULL;
1049 int     local_scan_timeout     = 5*60;
1050 #endif
1051 gid_t   local_user_gid         = (gid_t)(-1);
1052 uid_t   local_user_uid         = (uid_t)(-1);
1053
1054 tree_node *localpartlist_anchor= NULL;
1055 int     localpartlist_count    = 0;
1056 uschar *log_buffer             = NULL;
1057
1058 int     log_default[]          = { /* for initializing log_selector */
1059   Li_acl_warn_skipped,
1060   Li_connection_reject,
1061   Li_delay_delivery,
1062   Li_dkim,
1063   Li_dnslist_defer,
1064   Li_etrn,
1065   Li_host_lookup_failed,
1066   Li_lost_incoming_connection,
1067   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1068   Li_msg_id,
1069   Li_queue_run,
1070   Li_queue_time_exclusive,
1071   Li_rejected_header,
1072   Li_retry_defer,
1073   Li_sender_verify_fail,
1074   Li_size_reject,
1075   Li_skip_delivery,
1076   Li_smtp_confirmation,
1077   Li_tls_certificate_verified,
1078   Li_tls_cipher,
1079   -1
1080 };
1081
1082 uschar *log_file_path          = US LOG_FILE_PATH
1083                            "\0<--------------Space to patch log_file_path->";
1084
1085 int     log_notall[]           = {
1086   -1
1087 };
1088 bit_table log_options[]        = { /* must be in alphabetical order,
1089                                 with definitions from enum logbit. */
1090   BIT_TABLE(L, 8bitmime),
1091   BIT_TABLE(L, acl_warn_skipped),
1092   BIT_TABLE(L, address_rewrite),
1093   BIT_TABLE(L, all),
1094   BIT_TABLE(L, all_parents),
1095   BIT_TABLE(L, arguments),
1096   BIT_TABLE(L, connection_id),
1097   BIT_TABLE(L, connection_reject),
1098   BIT_TABLE(L, delay_delivery),
1099   BIT_TABLE(L, deliver_time),
1100   BIT_TABLE(L, delivery_size),
1101 #ifndef DISABLE_DKIM
1102   BIT_TABLE(L, dkim),
1103   BIT_TABLE(L, dkim_verbose),
1104 #endif
1105   BIT_TABLE(L, dnslist_defer),
1106   BIT_TABLE(L, dnssec),
1107   BIT_TABLE(L, etrn),
1108   BIT_TABLE(L, host_lookup_failed),
1109   BIT_TABLE(L, ident_timeout),
1110   BIT_TABLE(L, incoming_interface),
1111   BIT_TABLE(L, incoming_port),
1112   BIT_TABLE(L, lost_incoming_connection),
1113   BIT_TABLE(L, millisec),
1114   BIT_TABLE(L, msg_id),
1115   BIT_TABLE(L, msg_id_created),
1116   BIT_TABLE(L, outgoing_interface),
1117   BIT_TABLE(L, outgoing_port),
1118   BIT_TABLE(L, pid),
1119   BIT_TABLE(L, pipelining),
1120   BIT_TABLE(L, protocol_detail),
1121 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1122   BIT_TABLE(L, proxy),
1123 #endif
1124   BIT_TABLE(L, queue_run),
1125   BIT_TABLE(L, queue_time),
1126   BIT_TABLE(L, queue_time_exclusive),
1127   BIT_TABLE(L, queue_time_overall),
1128   BIT_TABLE(L, receive_time),
1129   BIT_TABLE(L, received_recipients),
1130   BIT_TABLE(L, received_sender),
1131   BIT_TABLE(L, rejected_header),
1132   { US"rejected_headers", Li_rejected_header },
1133   BIT_TABLE(L, retry_defer),
1134   BIT_TABLE(L, return_path_on_delivery),
1135   BIT_TABLE(L, sender_on_delivery),
1136   BIT_TABLE(L, sender_verify_fail),
1137   BIT_TABLE(L, size_reject),
1138   BIT_TABLE(L, skip_delivery),
1139   BIT_TABLE(L, smtp_confirmation),
1140   BIT_TABLE(L, smtp_connection),
1141   BIT_TABLE(L, smtp_incomplete_transaction),
1142   BIT_TABLE(L, smtp_mailauth),
1143   BIT_TABLE(L, smtp_no_mail),
1144   BIT_TABLE(L, smtp_protocol_error),
1145   BIT_TABLE(L, smtp_syntax_error),
1146   BIT_TABLE(L, subject),
1147   BIT_TABLE(L, tls_certificate_verified),
1148   BIT_TABLE(L, tls_cipher),
1149   BIT_TABLE(L, tls_peerdn),
1150   BIT_TABLE(L, tls_resumption),
1151   BIT_TABLE(L, tls_sni),
1152   BIT_TABLE(L, unknown_in_list),
1153 };
1154 int     log_options_count      = nelem(log_options);
1155
1156 int     log_reject_target      = 0;
1157 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1158 uschar *log_selector_string    = NULL;
1159 FILE   *log_stderr             = NULL;
1160 uschar *login_sender_address   = NULL;
1161 uschar *lookup_dnssec_authenticated = NULL;
1162 int     lookup_open_max        = 25;
1163 uschar *lookup_value           = NULL;
1164
1165 macro_item *macros_user        = NULL;
1166 uschar *mailstore_basename     = NULL;
1167 #ifdef WITH_CONTENT_SCAN
1168 uschar *malware_name           = NULL;  /* Virus Name */
1169 #endif
1170 int     max_received_linelength= 0;
1171 int     max_username_length    = 0;
1172 int     message_age            = 0;
1173 uschar *message_body           = NULL;
1174 uschar *message_body_end       = NULL;
1175 int     message_body_size      = 0;
1176 int     message_body_visible   = 500;
1177 int     message_ended          = END_NOTSTARTED;
1178 uschar *message_headers        = NULL;
1179 uschar *message_id;
1180 uschar *message_id_domain      = NULL;
1181 uschar *message_id_text        = NULL;
1182 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1183 uschar *message_id_external;
1184 int     message_linecount      = 0;
1185 int     message_size           = 0;
1186 uschar *message_size_limit     = US"50M";
1187 #ifdef SUPPORT_I18N
1188 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1189 #endif
1190 uschar  message_subdir[2]      = { 0, 0 };
1191 const uschar *message_reference= NULL;
1192
1193 /* MIME ACL expandables */
1194 #ifdef WITH_CONTENT_SCAN
1195 int     mime_anomaly_level     = 0;
1196 const uschar *mime_anomaly_text      = NULL;
1197 uschar *mime_boundary          = NULL;
1198 uschar *mime_charset           = NULL;
1199 uschar *mime_content_description = NULL;
1200 uschar *mime_content_disposition = NULL;
1201 uschar *mime_content_id        = NULL;
1202 unsigned int mime_content_size = 0;
1203 uschar *mime_content_transfer_encoding = NULL;
1204 uschar *mime_content_type      = NULL;
1205 uschar *mime_decoded_filename  = NULL;
1206 uschar *mime_filename          = NULL;
1207 int     mime_is_multipart      = 0;
1208 int     mime_is_coverletter    = 0;
1209 int     mime_is_rfc822         = 0;
1210 int     mime_part_count        = -1;
1211 #endif
1212
1213 uid_t  *never_users            = NULL;
1214 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1215
1216 const int on                   = 1;     /* for setsockopt */
1217 const int off                  = 0;
1218
1219 uid_t   original_euid;
1220 gid_t   originator_gid;
1221 uschar *originator_login       = NULL;
1222 uschar *originator_name        = NULL;
1223 uid_t   originator_uid;
1224 uschar *override_local_interfaces = NULL;
1225 const uschar *override_pid_file_path = NULL;
1226
1227 BOOL    panic_coredump         = FALSE;
1228 pcre2_general_context * pcre_gen_ctx = NULL;
1229 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1230 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1231 pcre2_general_context * pcre_mlc_ctx = NULL;
1232 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1233
1234 uschar *percent_hack_domains   = NULL;
1235 const uschar *pid_file_path    = US PID_FILE_PATH
1236                            "\0<--------------Space to patch pid_file_path->";
1237 #ifndef DISABLE_PIPE_CONNECT
1238 uschar *pipe_connect_advertise_hosts = US"*";
1239 #endif
1240 uschar *pipelining_advertise_hosts = US"*";
1241 uschar *primary_hostname       = NULL;
1242 uschar *process_info;
1243 int     process_info_len       = 0;
1244 uschar *process_log_path       = NULL;
1245 const uschar *process_purpose  = US"fresh-exec";
1246
1247 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1248 uschar *proxy_external_address = NULL;
1249 int     proxy_external_port    = 0;
1250 uschar *proxy_local_address    = NULL;
1251 int     proxy_local_port       = 0;
1252 int     proxy_protocol_timeout = 3;
1253 #endif
1254
1255 uschar *prvscheck_address      = NULL;
1256 uschar *prvscheck_keynum       = NULL;
1257 uschar *prvscheck_result       = NULL;
1258
1259
1260 qrunner *qrunners              = NULL;
1261
1262 const uschar *qualify_domain_recipient = NULL;
1263 uschar *qualify_domain_sender  = NULL;
1264 uschar *queue_domains          = NULL;
1265 int     queue_interval         = -1;
1266 uschar *queue_name             = US"";
1267 uschar *queue_name_dest        = NULL;
1268 uschar *queue_only_file        = NULL;
1269 int     queue_only_load        = -1;
1270 uschar *queue_run_max          = US"5";
1271 pid_t   queue_run_pid          = (pid_t)0;
1272 int     queue_run_pipe         = -1;
1273 unsigned queue_size            = 0;
1274 time_t  queue_size_next        = 0;
1275 uschar *queue_smtp_domains     = NULL;
1276
1277 uint32_t random_seed           = 0;
1278 tree_node *ratelimiters_cmd    = NULL;
1279 tree_node *ratelimiters_conn   = NULL;
1280 tree_node *ratelimiters_mail   = NULL;
1281 uschar *raw_active_hostname    = NULL;
1282 const uschar *raw_sender       = NULL;
1283 const uschar **raw_recipients  = NULL;
1284 int     raw_recipients_count   = 0;
1285
1286 int     rcpt_count             = 0;
1287 int     rcpt_fail_count        = 0;
1288 int     rcpt_defer_count       = 0;
1289 gid_t   real_gid;
1290 uid_t   real_uid;
1291 int     receive_linecount      = 0;
1292 int     receive_messagecount   = 0;
1293 int     receive_timeout        = 0;
1294 int     received_count         = 0;
1295 const uschar *received_for     = NULL;
1296
1297 /*  This is the default text for Received headers generated by Exim. The
1298 date  will be automatically added on the end. */
1299
1300 uschar *received_header_text   = US
1301      "Received: "
1302      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1303        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1304          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1305      "by $primary_hostname "
1306      "${if def:received_protocol {with $received_protocol }}"
1307 #ifndef DISABLE_TLS
1308      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1309      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1310 #endif
1311      "(Exim $version_number)\n\t"
1312      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1313      "id $message_exim_id"
1314      "${if def:received_for {\n\tfor $received_for}}"
1315      "\0<---------------Space to patch received_header_text->";
1316
1317 int     received_headers_max   = 30;
1318 uschar *received_protocol      = NULL;
1319 struct timeval received_time   = { 0, 0 };
1320 struct timeval received_time_complete = { 0, 0 };
1321 uschar *recipient_data         = NULL;
1322 uschar *recipient_unqualified_hosts = NULL;
1323 uschar *recipient_verify_failure = NULL;
1324 int     recipients_count       = 0;
1325 recipient_item  *recipients_list = NULL;
1326 int     recipients_list_max    = 0;
1327 uschar *recipients_max         = US"50000";
1328 int     recipients_max_expanded= 0;
1329 const pcre2_code *regex_AUTH         = NULL;
1330 const pcre2_code *regex_check_dns_names = NULL;
1331 const pcre2_code *regex_From         = NULL;
1332 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1333 const pcre2_code *regex_PIPELINING   = NULL;
1334 const pcre2_code *regex_SIZE         = NULL;
1335 #ifndef DISABLE_PIPE_CONNECT
1336 const pcre2_code *regex_EARLY_PIPE   = NULL;
1337 #endif
1338 int    regex_cachesize               = 0;
1339 const pcre2_code *regex_ismsgid      = NULL;
1340 const pcre2_code *regex_smtp_code    = NULL;
1341 const uschar *regex_vars[REGEX_VARS] = { NULL };
1342 #ifdef WHITELIST_D_MACROS
1343 const pcre2_code *regex_whitelisted_macro = NULL;
1344 #endif
1345 #ifdef WITH_CONTENT_SCAN
1346 uschar *regex_match_string     = NULL;
1347 #endif
1348 int     remote_delivery_count  = 0;
1349 int     remote_max_parallel    = 4;
1350 uschar *remote_sort_domains    = NULL;
1351 int     retry_data_expire      = 7*24*60*60;
1352 int     retry_interval_max     = 24*60*60;
1353 int     retry_maximum_timeout  = 0;        /* set from retry config */
1354 retry_config  *retries         = NULL;
1355 const uschar *return_path            = NULL;
1356 int     rewrite_existflags     = 0;
1357 uschar *rfc1413_hosts          = US"@[]";
1358 int     rfc1413_query_timeout  = 0;
1359 uid_t   root_gid               = ROOT_GID;
1360 uid_t   root_uid               = ROOT_UID;
1361
1362 router_instance  *routers  = NULL;
1363 router_instance  router_defaults = {
1364     .next =                     NULL,
1365     .name =                     NULL,
1366     .info =                     NULL,
1367     .options_block =            NULL,
1368     .driver_name =              NULL,
1369
1370     .address_data =             NULL,
1371 #ifdef EXPERIMENTAL_BRIGHTMAIL
1372     .bmi_rule =                 NULL,
1373 #endif
1374     .cannot_route_message =     NULL,
1375     .condition =                NULL,
1376     .current_directory =        NULL,
1377     .debug_string =             NULL,
1378     .domains =                  NULL,
1379     .errors_to =                NULL,
1380     .expand_gid =               NULL,
1381     .expand_uid =               NULL,
1382     .expand_more =              NULL,
1383     .expand_unseen =            NULL,
1384     .extra_headers =            NULL,
1385     .fallback_hosts =           NULL,
1386     .home_directory =           NULL,
1387     .ignore_target_hosts =      NULL,
1388     .local_parts =              NULL,
1389     .pass_router_name =         NULL,
1390     .prefix =                   NULL,
1391     .redirect_router_name =     NULL,
1392     .remove_headers =           NULL,
1393     .require_files =            NULL,
1394     .router_home_directory =    NULL,
1395     .self =                     US"freeze",
1396     .senders =                  NULL,
1397     .suffix =                   NULL,
1398     .translate_ip_address =     NULL,
1399     .transport_name =           NULL,
1400
1401     .address_test =             TRUE,
1402 #ifdef EXPERIMENTAL_BRIGHTMAIL
1403     .bmi_deliver_alternate =    FALSE,
1404     .bmi_deliver_default =      FALSE,
1405     .bmi_dont_deliver =         FALSE,
1406 #endif
1407     .expn =                     TRUE,
1408     .caseful_local_part =       FALSE,
1409     .check_local_user =         FALSE,
1410     .disable_logging =          FALSE,
1411     .fail_verify_recipient =    FALSE,
1412     .fail_verify_sender =       FALSE,
1413     .gid_set =                  FALSE,
1414     .initgroups =               FALSE,
1415     .log_as_local =             TRUE_UNSET,
1416     .more =                     TRUE,
1417     .pass_on_timeout =          FALSE,
1418     .prefix_optional =          FALSE,
1419     .repeat_use =               TRUE,
1420     .retry_use_local_part =     TRUE_UNSET,
1421     .same_domain_copy_routing = FALSE,
1422     .self_rewrite =             FALSE,
1423     .set =                      NULL,
1424     .suffix_optional =          FALSE,
1425     .verify_only =              FALSE,
1426     .verify_recipient =         TRUE,
1427     .verify_sender =            TRUE,
1428     .uid_set =                  FALSE,
1429     .unseen =                   FALSE,
1430     .dsn_lasthop =              FALSE,
1431
1432     .self_code =                self_freeze,
1433     .uid =                      (uid_t)(-1),
1434     .gid =                      (gid_t)(-1),
1435
1436     .fallback_hostlist =        NULL,
1437     .transport =                NULL,
1438     .pass_router =              NULL,
1439     .redirect_router =          NULL,
1440
1441     .dnssec =                   { .request= US"*", .require=NULL },
1442 };
1443
1444 uschar *router_name            = NULL;
1445 tree_node *router_var          = NULL;
1446
1447 ip_address_item *running_interfaces = NULL;
1448
1449 /* This is a weird one. The following string gets patched in the binary by the
1450 script that sets up a copy of Exim for running in the test harness. It seems
1451 that compilers are now clever, and share constant strings if they can.
1452 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1453 make use of the end of this string in order to save space. So the patching then
1454 wrecks this. We defeat this optimization by adding some additional characters
1455 onto the end of the string. */
1456
1457 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1458
1459 int     runrc                  = 0;
1460
1461 uschar *search_error_message   = NULL;
1462 uschar *self_hostname          = NULL;
1463 const uschar *sender_address   = NULL;
1464 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1465 uschar *sender_address_data    = NULL;
1466 const uschar *sender_address_unrewritten = NULL;
1467 uschar *sender_data            = NULL;
1468 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1469 uschar *sender_fullhost        = NULL;
1470 uschar *sender_helo_name       = NULL;
1471 uschar **sender_host_aliases   = &no_aliases;
1472 uschar *sender_host_address    = NULL;
1473 uschar *sender_host_authenticated = NULL;
1474 uschar *sender_host_auth_pubname  = NULL;
1475 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1476 uschar *sender_host_name       = NULL;
1477 int     sender_host_port       = 0;
1478 uschar *sender_ident           = NULL;
1479 uschar *sender_rate            = NULL;
1480 uschar *sender_rate_limit      = NULL;
1481 uschar *sender_rate_period     = NULL;
1482 uschar *sender_rcvhost         = NULL;
1483 uschar *sender_unqualified_hosts = NULL;
1484 uschar *sender_verify_failure = NULL;
1485 address_item *sender_verified_list  = NULL;
1486 address_item *sender_verified_failed = NULL;
1487 int     sender_verified_rc     = -1;
1488 uschar *sending_ip_address     = NULL;
1489 int     sending_port           = -1;
1490 SIGNAL_BOOL sigalrm_seen       = FALSE;
1491 const uschar *sigalarm_setter  = NULL;
1492 const uschar **sighup_argv     = NULL;
1493 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1494 int     smtp_accept_count      = 0;
1495 int     smtp_accept_max        = 20;
1496 int     smtp_accept_max_nonmail= 10;
1497 uschar *smtp_accept_max_nonmail_hosts = US"*";
1498 uschar *smtp_accept_max_per_connection = US"1000";
1499 uschar *smtp_accept_max_per_host = NULL;
1500 int     smtp_accept_queue      = 0;
1501 int     smtp_accept_queue_per_connection = 10;
1502 int     smtp_accept_reserve    = 0;
1503 uschar *smtp_active_hostname   = NULL;
1504 int     smtp_backlog_monitor   = 0;
1505 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1506                              "Exim $version_number $tod_full"
1507                              "\0<---------------Space to patch smtp_banner->";
1508 int     smtp_ch_index          = 0;
1509 uschar *smtp_cmd_argument      = NULL;
1510 uschar *smtp_cmd_buffer        = NULL;
1511 struct timeval smtp_connection_start  = {0,0};
1512 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1513 int     smtp_connect_backlog   = 20;
1514 double  smtp_delay_mail        = 0.0;
1515 double  smtp_delay_rcpt        = 0.0;
1516 FILE   *smtp_in                = NULL;
1517 int     smtp_listen_backlog    = 0;
1518 int     smtp_load_reserve      = -1;
1519 int     smtp_mailcmd_count     = 0;
1520 int     smtp_mailcmd_max       = -1;
1521 FILE   *smtp_out               = NULL;
1522 uschar *smtp_etrn_command      = NULL;
1523 int     smtp_max_synprot_errors= 3;
1524 int     smtp_max_unknown_commands = 3;
1525 uschar *smtp_notquit_reason    = NULL;
1526 unsigned smtp_peer_options     = 0;
1527 unsigned smtp_peer_options_wrap= 0;
1528 uschar *smtp_ratelimit_hosts   = NULL;
1529 uschar *smtp_ratelimit_mail    = NULL;
1530 uschar *smtp_ratelimit_rcpt    = NULL;
1531 uschar *smtp_read_error        = US"";
1532 int     smtp_receive_timeout   = 5*60;
1533 uschar *smtp_receive_timeout_s = NULL;
1534 uschar *smtp_reserve_hosts     = NULL;
1535 int     smtp_rlm_base          = 0;
1536 double  smtp_rlm_factor        = 0.0;
1537 int     smtp_rlm_limit         = 0;
1538 int     smtp_rlm_threshold     = INT_MAX;
1539 int     smtp_rlr_base          = 0;
1540 double  smtp_rlr_factor        = 0.0;
1541 int     smtp_rlr_limit         = 0;
1542 int     smtp_rlr_threshold     = INT_MAX;
1543 #ifdef SUPPORT_I18N
1544 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1545 #endif
1546
1547 #ifdef WITH_CONTENT_SCAN
1548 uschar *spamd_address          = US"127.0.0.1 783";
1549 uschar *spam_bar               = NULL;
1550 uschar *spam_report            = NULL;
1551 uschar *spam_action            = NULL;
1552 uschar *spam_score             = NULL;
1553 uschar *spam_score_int         = NULL;
1554 #endif
1555 #ifdef SUPPORT_SPF
1556 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1557 uschar *spf_header_comment     = NULL;
1558 uschar *spf_received           = NULL;
1559 uschar *spf_result             = NULL;
1560 uschar *spf_smtp_comment       = NULL;
1561 uschar *spf_smtp_comment_template
1562                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1563                                = US"Please%_see%_http://www.open-spf.org/Why";
1564
1565 #endif
1566
1567 FILE   *spool_data_file        = NULL;
1568 uschar *spool_directory        = US SPOOL_DIRECTORY
1569                            "\0<--------------Space to patch spool_directory->";
1570 #ifdef SUPPORT_SRS
1571 uschar *srs_recipient          = NULL;
1572 #endif
1573 int     string_datestamp_offset= -1;
1574 int     string_datestamp_length= 0;
1575 int     string_datestamp_type  = -1;
1576 const uschar *submission_domain = NULL;
1577 const uschar *submission_name  = NULL;
1578 int     syslog_facility        = LOG_MAIL;
1579 const uschar *syslog_processname= US"exim";
1580 uschar *system_filter          = NULL;
1581
1582 uschar *system_filter_directory_transport = NULL;
1583 uschar *system_filter_file_transport = NULL;
1584 uschar *system_filter_pipe_transport = NULL;
1585 uschar *system_filter_reply_transport = NULL;
1586
1587 gid_t   system_filter_gid      = 0;
1588 uid_t   system_filter_uid      = (uid_t)-1;
1589
1590 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1591 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1592 #ifdef USE_TCP_WRAPPERS
1593 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1594 #endif
1595 int     test_harness_load_avg  = 0;
1596 int     thismessage_size_limit = 0;
1597 int     timeout_frozen_after   = 0;
1598 #ifdef MEASURE_TIMING
1599 struct timeval timestamp_startup;
1600 #endif
1601
1602 transport_instance  *transports = NULL;
1603
1604 transport_instance  transport_defaults = {
1605     /* All non-mentioned elements zero/NULL/FALSE */
1606     .batch_max =                1,
1607     .multi_domain =             TRUE,
1608     .max_addresses =            US"100",
1609     .connection_max_messages =  500,
1610     .uid =                      (uid_t)(-1),
1611     .gid =                      (gid_t)(-1),
1612     .filter_timeout =           300,
1613     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1614                                                  1 nor 0 so can detect unset */
1615 };
1616
1617 int     transport_count;
1618 uschar *transport_name          = NULL;
1619 int     transport_newlines;
1620 const uschar **transport_filter_argv  = NULL;
1621 int     transport_filter_timeout;
1622 int     transport_write_timeout= 0;
1623
1624 tree_node  *tree_dns_fails     = NULL;
1625 tree_node  *tree_duplicates    = NULL;
1626 tree_node  *tree_nonrecipients = NULL;
1627 tree_node  *tree_unusable      = NULL;
1628
1629 gid_t  *trusted_groups         = NULL;
1630 uid_t  *trusted_users          = NULL;
1631 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1632
1633 uschar *unknown_login          = NULL;
1634 uschar *unknown_username       = NULL;
1635 uschar *untrusted_set_sender   = NULL;
1636
1637 /*  A regex for matching a "From_" line in an incoming message, in the form
1638
1639     From ph10 Fri Jan  5 12:35 GMT 1996
1640
1641 which  the "mail" commands send to the MTA (undocumented, of course), or in
1642 the  form
1643
1644     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1645
1646 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1647 Because  of variations in time formats, just match up to the minutes. That
1648 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1649 so  just require one digit for hours and minutes. The weekday is also absent
1650 in  some forms. */
1651
1652 uschar *uucp_from_pattern      = US
1653    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1654    "(?:"                                          /* Non-extracting bracket */
1655    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1656    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1657    ")"                                            /* End alternation */
1658    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1659
1660 uschar *uucp_from_sender       = US"$1";
1661
1662 uschar *verify_mode            = NULL;
1663 uschar *version_copyright      =
1664  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1665    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2022";
1666 uschar *version_date           = US"?";
1667 uschar *version_cnumber        = US"????";
1668 uschar *version_string         = US"?";
1669
1670 uschar *warn_message_file      = NULL;
1671 int     warning_count          = 0;
1672 const uschar *warnmsg_delay    = NULL;
1673 const uschar *warnmsg_recipients = NULL;
1674
1675 #ifndef DISABLE_WELLKNOWN
1676 uschar *wellknown_advertise_hosts = NULL;
1677 uschar *wellknown_response     = NULL;
1678 #endif
1679
1680 /*  End of globals.c */
1681 /* vi: aw ai sw=2
1682 */