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 uschar  continue_next_id[MESSAGE_ID_LENGTH +1] = {[0]='\0'};
 750 int     continue_sequence      = 1;
 751 uschar *continue_transport     = NULL;
 752 #ifndef COMPILE_UTILITY
 753 open_db *continue_wait_db      = NULL;
 754 open_db *continue_retry_db     = NULL;
 755 #endif
 756 #ifndef DISABLE_ESMTP_LIMITS
 757 unsigned continue_limit_mail   = 0;
 758 unsigned continue_limit_rcpt   = 0;
 759 unsigned continue_limit_rcptdom= 0;
 760 #endif
 761
 762 uschar *csa_status             = NULL;
 763 cut_t   cutthrough = {
 764   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 765   .delivery =           FALSE,                          /* when to attempt */
 766   .defer_pass =         FALSE,                          /* on defer: spool locally */
 767   .is_tls =             FALSE,                          /* not a TLS conn yet */
 768   .cctx =               {.sock = -1},                   /* open connection */
 769   .nrcpt =              0,                              /* number of addresses */
 770 };
 771
 772 int     daemon_notifier_fd     = -1;
 773 uschar *daemon_smtp_port       = US"smtp";
 774 int     daemon_startup_retries = 9;
 775 int     daemon_startup_sleep   = 30;
 776
 777 #ifdef EXPERIMENTAL_DCC
 778 uschar *dcc_header             = NULL;
 779 uschar *dcc_result             = NULL;
 780 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 781 uschar *dccifd_options         = US"header";
 782 #endif
 783
 784 int     debug_fd               = -1;
 785 FILE   *debug_file             = NULL;
 786 int     debug_notall[]         = {
 787   Di_memory,
 788   Di_noutf8,
 789   -1
 790 };
 791 bit_table debug_options[]      = { /* must be in alphabetical order and use
 792                                  only the enum values from macro.h */
 793   BIT_TABLE(D, acl),
 794   BIT_TABLE(D, all),
 795   BIT_TABLE(D, auth),
 796   BIT_TABLE(D, deliver),
 797   BIT_TABLE(D, dns),
 798   BIT_TABLE(D, dnsbl),
 799   BIT_TABLE(D, exec),
 800   BIT_TABLE(D, expand),
 801   BIT_TABLE(D, filter),
 802   BIT_TABLE(D, hints_lookup),
 803   BIT_TABLE(D, host_lookup),
 804   BIT_TABLE(D, ident),
 805   BIT_TABLE(D, interface),
 806   BIT_TABLE(D, lists),
 807   BIT_TABLE(D, load),
 808   BIT_TABLE(D, local_scan),
 809   BIT_TABLE(D, lookup),
 810   BIT_TABLE(D, memory),
 811   BIT_TABLE(D, noutf8),
 812   BIT_TABLE(D, pid),
 813   BIT_TABLE(D, process_info),
 814   BIT_TABLE(D, queue_run),
 815   BIT_TABLE(D, receive),
 816   BIT_TABLE(D, resolver),
 817   BIT_TABLE(D, retry),
 818   BIT_TABLE(D, rewrite),
 819   BIT_TABLE(D, route),
 820   BIT_TABLE(D, timestamp),
 821   BIT_TABLE(D, tls),
 822   BIT_TABLE(D, transport),
 823   BIT_TABLE(D, uid),
 824   BIT_TABLE(D, verify),
 825 };
 826 int      debug_options_count    = nelem(debug_options);
 827 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 828 unsigned debug_pretrigger_bsize = 0;
 829 uschar * debug_pretrigger_buf   = NULL;
 830 unsigned int debug_selector     = 0;
 831
 832 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 833 uschar *delay_warning_condition=
 834   US"${if or {"
 835             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 836             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 837             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 838             "} {no}{yes}}";
 839 uschar *deliver_address_data   = NULL;
 840 int     deliver_datafile       = -1;
 841 const uschar *deliver_domain   = NULL;
 842 uschar *deliver_domain_data    = NULL;
 843 const uschar *deliver_domain_orig = NULL;
 844 const uschar *deliver_domain_parent = NULL;
 845 time_t  deliver_frozen_at      = 0;
 846 uschar *deliver_home           = NULL;
 847 const uschar *deliver_host     = NULL;
 848 const uschar *deliver_host_address = NULL;
 849 int     deliver_host_port      = 0;
 850 uschar *deliver_in_buffer      = NULL;
 851 ino_t   deliver_inode          = 0;
 852 const uschar *deliver_localpart= NULL;
 853 uschar *deliver_localpart_data = NULL;
 854 const uschar *deliver_localpart_orig = NULL;
 855 const uschar *deliver_localpart_parent = NULL;
 856 const uschar *deliver_localpart_prefix = NULL;
 857 const uschar *deliver_localpart_prefix_v = NULL;
 858 const uschar *deliver_localpart_suffix = NULL;
 859 const uschar *deliver_localpart_suffix_v = NULL;
 860 uschar *deliver_out_buffer     = NULL;
 861 int     deliver_queue_load_max = -1;
 862 address_item  *deliver_recipients = NULL;
 863 uschar *deliver_selectstring   = NULL;
 864 uschar *deliver_selectstring_sender = NULL;
 865
 866 #ifndef DISABLE_DKIM
 867 unsigned dkim_collect_input      = 0;
 868 uschar *dkim_cur_signer          = NULL;
 869 int     dkim_key_length          = 0;
 870 void   *dkim_signatures          = NULL;
 871 uschar *dkim_signers             = NULL;
 872 uschar *dkim_signing_domain      = NULL;
 873 uschar *dkim_signing_selector    = NULL;
 874 gstring *dkim_signing_record     = NULL;
 875 uschar *dkim_verify_hashes       = US"sha256:sha512";
 876 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 877 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 878 BOOL    dkim_verify_minimal      = FALSE;
 879 uschar *dkim_verify_overall      = NULL;
 880 uschar *dkim_verify_signers      = US"$dkim_signers";
 881 uschar *dkim_verify_status       = NULL;
 882 uschar *dkim_verify_reason       = NULL;
 883 #endif
 884 #ifdef SUPPORT_DMARC
 885 uschar *dmarc_domain_policy     = NULL;
 886 uschar *dmarc_forensic_sender   = NULL;
 887 uschar *dmarc_history_file      = NULL;
 888 uschar *dmarc_status            = NULL;
 889 uschar *dmarc_status_text       = NULL;
 890 uschar *dmarc_tld_file          = NULL;
 891 uschar *dmarc_used_domain       = NULL;
 892 #endif
 893
 894 uschar *dns_again_means_nonexist = NULL;
 895 int     dns_csa_search_limit   = 5;
 896 int     dns_cname_loops        = 1;
 897 #ifdef SUPPORT_DANE
 898 int     dns_dane_ok            = -1;
 899 #endif
 900 uschar *dns_ipv4_lookup        = NULL;
 901 int     dns_retrans            = 0;
 902 int     dns_retry              = 0;
 903 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 904 uschar *dns_trust_aa           = NULL;
 905 int     dns_use_edns0          = -1; /* <0 = not coerced */
 906 uschar *dnslist_domain         = NULL;
 907 uschar *dnslist_matched        = NULL;
 908 uschar *dnslist_text           = NULL;
 909 uschar *dnslist_value          = NULL;
 910 tree_node *domainlist_anchor   = NULL;
 911 int     domainlist_count       = 0;
 912 const uschar *driver_srcfile   = NULL;
 913 int     driver_srcline         = 0;
 914 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 915 unsigned int dtrigger_selector = 0;
 916
 917 int     errno_quota            = ERRNO_QUOTA;
 918 uschar *errors_copy            = NULL;
 919 int     error_handling         = ERRORS_SENDER;
 920 uschar *errors_reply_to        = NULL;
 921 int     errors_sender_rc       = EXIT_FAILURE;
 922 #ifndef DISABLE_EVENT
 923 uschar *event_action           = NULL;  /* expansion for delivery events */
 924 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 925 int     event_defer_errno      = 0;
 926 const uschar *event_name       = NULL;  /* event name variable */
 927 #endif
 928
 929
 930 gid_t   exim_gid               = EXIM_GID;
 931 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 932                         "\0<---------------Space to patch exim_path->";
 933 uid_t   exim_uid               = EXIM_UID;
 934 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 935 int     expand_forbid          = 0;
 936 int     expand_nlength[EXPAND_MAXN+1];
 937 int     expand_nmax            = -1;
 938 const uschar *expand_nstring[EXPAND_MAXN+1];
 939 uschar *expand_string_message;
 940 uschar *extra_local_interfaces = NULL;
 941
 942 int     fake_response          = OK;
 943 uschar *fake_response_text     = US"Your message has been rejected but is "
 944                                    "being kept for evaluation.\nIf it was a "
 945                                    "legitimate message, it may still be "
 946                                    "delivered to the target recipient(s).";
 947 int     filter_n[FILTER_VARIABLE_COUNT];
 948 int     filter_sn[FILTER_VARIABLE_COUNT];
 949 int     filter_test            = FTEST_NONE;
 950 const uschar * filter_test_sfile = NULL;
 951 const uschar * filter_test_ufile = NULL;
 952 uschar *filter_thisaddress     = NULL;
 953 int     finduser_retries       = 0;
 954 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 955 uschar *freeze_tell            = NULL;
 956 uschar *freeze_tell_config     = NULL;
 957 uschar *fudged_queue_times     = US"";
 958
 959 uschar *gecos_name             = NULL;
 960 uschar *gecos_pattern          = NULL;
 961 rewrite_rule  *global_rewrite_rules = NULL;
 962
 963 volatile sig_atomic_t had_command_timeout = 0;
 964 volatile sig_atomic_t had_command_sigterm = 0;
 965 volatile sig_atomic_t had_data_timeout    = 0;
 966 volatile sig_atomic_t had_data_sigint     = 0;
 967 const uschar *headers_charset  = US HEADERS_CHARSET;
 968 int     header_insert_maxlen   = 64 * 1024;
 969 header_line  *header_last      = NULL;
 970 header_line  *header_list      = NULL;
 971 int     header_maxsize         = HEADER_MAXSIZE;
 972 int     header_line_maxsize    = 0;
 973
 974 header_name header_names[] = {
 975   /* name               len     allow_resent    htype */
 976   { US"bcc",            3,      TRUE,           htype_bcc },
 977   { US"cc",             2,      TRUE,           htype_cc },
 978   { US"date",           4,      TRUE,           htype_date },
 979   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 980   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 981   { US"from",           4,      TRUE,           htype_from },
 982   { US"message-id",    10,      TRUE,           htype_id },
 983   { US"received",       8,      FALSE,          htype_received },
 984   { US"reply-to",       8,      FALSE,          htype_reply_to },
 985   { US"return-path",   11,      FALSE,          htype_return_path },
 986   { US"sender",         6,      TRUE,           htype_sender },
 987   { US"subject",        7,      FALSE,          htype_subject },
 988   { US"to",             2,      TRUE,           htype_to }
 989 };
 990
 991 int header_names_size          = nelem(header_names);
 992
 993 uschar *helo_accept_junk_hosts = NULL;
 994 uschar *helo_allow_chars       = US"";
 995 uschar *helo_lookup_domains    = US"@ : @[]";
 996 uschar *helo_try_verify_hosts  = NULL;
 997 uschar *helo_verify_hosts      = NULL;
 998 const uschar *hex_digits       = CUS"0123456789abcdef";
 999 uschar *hold_domains           = NULL;
1000 uschar *host_data              = NULL;
1001 uschar *host_lookup            = NULL;
1002 uschar *host_lookup_order      = US"bydns:byaddr";
1003 uschar *host_lookup_msg        = US"";
1004 int     host_number            = 0;
1005 uschar *host_number_string     = NULL;
1006 uschar *host_reject_connection = NULL;
1007 uschar *hosts_connection_nolog = NULL;
1008 #ifdef SUPPORT_PROXY
1009 uschar *hosts_proxy            = NULL;
1010 #endif
1011 uschar *hosts_treat_as_local   = NULL;
1012 uschar *hosts_require_helo     = US"*";
1013 #ifdef EXPERIMENTAL_XCLIENT
1014 uschar *hosts_xclient          = NULL;
1015 #endif
1016 tree_node *hostlist_anchor     = NULL;
1017 int     hostlist_count         = 0;
1018
1019
1020 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1021 uschar *ignore_fromline_hosts  = NULL;
1022 int     inetd_wait_timeout     = -1;
1023 uschar *initial_cwd            = NULL;
1024 uschar *interface_address      = NULL;
1025 int     interface_port         = -1;
1026 uschar *iterate_item           = NULL;
1027
1028 int     journal_fd             = -1;
1029
1030 uschar *keep_environment       = NULL;
1031
1032 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1033
1034 uschar *eldap_dn               = NULL;
1035 const uschar *letter_digit_hyphen_dot =
1036     US"abcdefghijklmnopqrstuvwxyz"
1037       ".-0123456789"
1038       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1039 #ifndef DISABLE_ESMTP_LIMITS
1040 uschar *limits_advertise_hosts = US"*";
1041 #endif
1042 int     load_average           = -2;
1043 uschar *local_from_prefix      = NULL;
1044 uschar *local_from_suffix      = NULL;
1045
1046 #if HAVE_IPV6
1047 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1048 #else
1049 uschar *local_interfaces       = US"0.0.0.0";
1050 #endif
1051
1052 #ifdef HAVE_LOCAL_SCAN
1053 uschar *local_scan_data        = NULL;
1054 int     local_scan_timeout     = 5*60;
1055 #endif
1056 gid_t   local_user_gid         = (gid_t)(-1);
1057 uid_t   local_user_uid         = (uid_t)(-1);
1058
1059 tree_node *localpartlist_anchor= NULL;
1060 int     localpartlist_count    = 0;
1061 uschar *log_buffer             = NULL;
1062
1063 int     log_default[]          = { /* for initializing log_selector */
1064   Li_acl_warn_skipped,
1065   Li_connection_reject,
1066   Li_delay_delivery,
1067   Li_dkim,
1068   Li_dnslist_defer,
1069   Li_etrn,
1070   Li_host_lookup_failed,
1071   Li_lost_incoming_connection,
1072   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1073   Li_msg_id,
1074   Li_queue_run,
1075   Li_queue_time_exclusive,
1076   Li_rejected_header,
1077   Li_retry_defer,
1078   Li_sender_verify_fail,
1079   Li_size_reject,
1080   Li_skip_delivery,
1081   Li_smtp_confirmation,
1082   Li_tls_certificate_verified,
1083   Li_tls_cipher,
1084   -1
1085 };
1086
1087 uschar *log_file_path          = US LOG_FILE_PATH
1088                            "\0<--------------Space to patch log_file_path->";
1089
1090 int     log_notall[]           = {
1091   -1
1092 };
1093 bit_table log_options[]        = { /* must be in alphabetical order,
1094                                 with definitions from enum logbit. */
1095   BIT_TABLE(L, 8bitmime),
1096   BIT_TABLE(L, acl_warn_skipped),
1097   BIT_TABLE(L, address_rewrite),
1098   BIT_TABLE(L, all),
1099   BIT_TABLE(L, all_parents),
1100   BIT_TABLE(L, arguments),
1101   BIT_TABLE(L, connection_id),
1102   BIT_TABLE(L, connection_reject),
1103   BIT_TABLE(L, delay_delivery),
1104   BIT_TABLE(L, deliver_time),
1105   BIT_TABLE(L, delivery_size),
1106 #ifndef DISABLE_DKIM
1107   BIT_TABLE(L, dkim),
1108   BIT_TABLE(L, dkim_verbose),
1109 #endif
1110   BIT_TABLE(L, dnslist_defer),
1111   BIT_TABLE(L, dnssec),
1112   BIT_TABLE(L, etrn),
1113   BIT_TABLE(L, host_lookup_failed),
1114   BIT_TABLE(L, ident_timeout),
1115   BIT_TABLE(L, incoming_interface),
1116   BIT_TABLE(L, incoming_port),
1117   BIT_TABLE(L, lost_incoming_connection),
1118   BIT_TABLE(L, millisec),
1119   BIT_TABLE(L, msg_id),
1120   BIT_TABLE(L, msg_id_created),
1121   BIT_TABLE(L, outgoing_interface),
1122   BIT_TABLE(L, outgoing_port),
1123   BIT_TABLE(L, pid),
1124   BIT_TABLE(L, pipelining),
1125   BIT_TABLE(L, protocol_detail),
1126 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1127   BIT_TABLE(L, proxy),
1128 #endif
1129   BIT_TABLE(L, queue_run),
1130   BIT_TABLE(L, queue_time),
1131   BIT_TABLE(L, queue_time_exclusive),
1132   BIT_TABLE(L, queue_time_overall),
1133   BIT_TABLE(L, receive_time),
1134   BIT_TABLE(L, received_recipients),
1135   BIT_TABLE(L, received_sender),
1136   BIT_TABLE(L, rejected_header),
1137   { US"rejected_headers", Li_rejected_header },
1138   BIT_TABLE(L, retry_defer),
1139   BIT_TABLE(L, return_path_on_delivery),
1140   BIT_TABLE(L, sender_on_delivery),
1141   BIT_TABLE(L, sender_verify_fail),
1142   BIT_TABLE(L, size_reject),
1143   BIT_TABLE(L, skip_delivery),
1144   BIT_TABLE(L, smtp_confirmation),
1145   BIT_TABLE(L, smtp_connection),
1146   BIT_TABLE(L, smtp_incomplete_transaction),
1147   BIT_TABLE(L, smtp_mailauth),
1148   BIT_TABLE(L, smtp_no_mail),
1149   BIT_TABLE(L, smtp_protocol_error),
1150   BIT_TABLE(L, smtp_syntax_error),
1151   BIT_TABLE(L, subject),
1152   BIT_TABLE(L, tls_certificate_verified),
1153   BIT_TABLE(L, tls_cipher),
1154   BIT_TABLE(L, tls_peerdn),
1155   BIT_TABLE(L, tls_resumption),
1156   BIT_TABLE(L, tls_sni),
1157   BIT_TABLE(L, unknown_in_list),
1158 };
1159 int     log_options_count      = nelem(log_options);
1160
1161 int     log_reject_target      = 0;
1162 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1163 uschar *log_selector_string    = NULL;
1164 FILE   *log_stderr             = NULL;
1165 uschar *login_sender_address   = NULL;
1166 uschar *lookup_dnssec_authenticated = NULL;
1167 int     lookup_open_max        = 25;
1168 uschar *lookup_value           = NULL;
1169
1170 macro_item *macros_user        = NULL;
1171 uschar *mailstore_basename     = NULL;
1172 #ifdef WITH_CONTENT_SCAN
1173 uschar *malware_name           = NULL;  /* Virus Name */
1174 #endif
1175 int     max_received_linelength= 0;
1176 int     max_username_length    = 0;
1177 int     message_age            = 0;
1178 uschar *message_body           = NULL;
1179 uschar *message_body_end       = NULL;
1180 int     message_body_size      = 0;
1181 int     message_body_visible   = 500;
1182 int     message_ended          = END_NOTSTARTED;
1183 uschar *message_headers        = NULL;
1184 uschar *message_id;
1185 uschar *message_id_domain      = NULL;
1186 uschar *message_id_text        = NULL;
1187 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1188 uschar *message_id_external;
1189 int     message_linecount      = 0;
1190 int     message_size           = 0;
1191 uschar *message_size_limit     = US"50M";
1192 #ifdef SUPPORT_I18N
1193 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1194 #endif
1195 uschar  message_subdir[2]      = { 0, 0 };
1196 const uschar *message_reference= NULL;
1197
1198 /* MIME ACL expandables */
1199 #ifdef WITH_CONTENT_SCAN
1200 int     mime_anomaly_level     = 0;
1201 const uschar *mime_anomaly_text      = NULL;
1202 uschar *mime_boundary          = NULL;
1203 uschar *mime_charset           = NULL;
1204 uschar *mime_content_description = NULL;
1205 uschar *mime_content_disposition = NULL;
1206 uschar *mime_content_id        = NULL;
1207 unsigned int mime_content_size = 0;
1208 uschar *mime_content_transfer_encoding = NULL;
1209 uschar *mime_content_type      = NULL;
1210 uschar *mime_decoded_filename  = NULL;
1211 uschar *mime_filename          = NULL;
1212 int     mime_is_multipart      = 0;
1213 int     mime_is_coverletter    = 0;
1214 int     mime_is_rfc822         = 0;
1215 int     mime_part_count        = -1;
1216 #endif
1217
1218 uid_t  *never_users            = NULL;
1219 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1220
1221 const int on                   = 1;     /* for setsockopt */
1222 const int off                  = 0;
1223
1224 uid_t   original_euid;
1225 gid_t   originator_gid;
1226 uschar *originator_login       = NULL;
1227 uschar *originator_name        = NULL;
1228 uid_t   originator_uid;
1229 uschar *override_local_interfaces = NULL;
1230 const uschar *override_pid_file_path = NULL;
1231
1232 BOOL    panic_coredump         = FALSE;
1233 pcre2_general_context * pcre_gen_ctx = NULL;
1234 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1235 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1236 pcre2_general_context * pcre_mlc_ctx = NULL;
1237 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1238
1239 uschar *percent_hack_domains   = NULL;
1240 const uschar *pid_file_path    = US PID_FILE_PATH
1241                            "\0<--------------Space to patch pid_file_path->";
1242 #ifndef DISABLE_PIPE_CONNECT
1243 uschar *pipe_connect_advertise_hosts = US"*";
1244 #endif
1245 uschar *pipelining_advertise_hosts = US"*";
1246 uschar *primary_hostname       = NULL;
1247 uschar *process_info;
1248 int     process_info_len       = 0;
1249 uschar *process_log_path       = NULL;
1250 const uschar *process_purpose  = US"fresh-exec";
1251
1252 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1253 uschar *proxy_external_address = NULL;
1254 int     proxy_external_port    = 0;
1255 uschar *proxy_local_address    = NULL;
1256 int     proxy_local_port       = 0;
1257 int     proxy_protocol_timeout = 3;
1258 #endif
1259
1260 uschar *prvscheck_address      = NULL;
1261 uschar *prvscheck_keynum       = NULL;
1262 uschar *prvscheck_result       = NULL;
1263
1264
1265 qrunner *qrunners              = NULL;
1266
1267 const uschar *qualify_domain_recipient = NULL;
1268 uschar *qualify_domain_sender  = NULL;
1269 uschar *queue_domains          = NULL;
1270 int     queue_interval         = -1;
1271 uschar *queue_name             = US"";
1272 uschar *queue_name_dest        = NULL;
1273 uschar *queue_only_file        = NULL;
1274 int     queue_only_load        = -1;
1275 uschar *queue_run_max          = US"5";
1276 pid_t   queue_run_pid          = (pid_t)0;
1277 int     queue_run_pipe         = -1;
1278 unsigned queue_size            = 0;
1279 time_t  queue_size_next        = 0;
1280 uschar *queue_smtp_domains     = NULL;
1281
1282 uint32_t random_seed           = 0;
1283 tree_node *ratelimiters_cmd    = NULL;
1284 tree_node *ratelimiters_conn   = NULL;
1285 tree_node *ratelimiters_mail   = NULL;
1286 uschar *raw_active_hostname    = NULL;
1287 const uschar *raw_sender       = NULL;
1288 const uschar **raw_recipients  = NULL;
1289 int     raw_recipients_count   = 0;
1290
1291 int     rcpt_count             = 0;
1292 int     rcpt_fail_count        = 0;
1293 int     rcpt_defer_count       = 0;
1294 gid_t   real_gid;
1295 uid_t   real_uid;
1296 int     receive_linecount      = 0;
1297 int     receive_messagecount   = 0;
1298 int     receive_timeout        = 0;
1299 int     received_count         = 0;
1300 const uschar *received_for     = NULL;
1301
1302 /*  This is the default text for Received headers generated by Exim. The
1303 date  will be automatically added on the end. */
1304
1305 uschar *received_header_text   = US
1306      "Received: "
1307      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1308        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1309          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1310      "by $primary_hostname "
1311      "${if def:received_protocol {with $received_protocol }}"
1312 #ifndef DISABLE_TLS
1313      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1314      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1315 #endif
1316      "(Exim $version_number)\n\t"
1317      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1318      "id $message_exim_id"
1319      "${if def:received_for {\n\tfor $received_for}}"
1320      "\0<---------------Space to patch received_header_text->";
1321
1322 int     received_headers_max   = 30;
1323 uschar *received_protocol      = NULL;
1324 struct timeval received_time   = { 0, 0 };
1325 struct timeval received_time_complete = { 0, 0 };
1326 uschar *recipient_data         = NULL;
1327 uschar *recipient_unqualified_hosts = NULL;
1328 uschar *recipient_verify_failure = NULL;
1329 int     recipients_count       = 0;
1330 recipient_item  *recipients_list = NULL;
1331 int     recipients_list_max    = 0;
1332 uschar *recipients_max         = US"50000";
1333 int     recipients_max_expanded= 0;
1334 const pcre2_code *regex_AUTH         = NULL;
1335 const pcre2_code *regex_check_dns_names = NULL;
1336 const pcre2_code *regex_From         = NULL;
1337 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1338 const pcre2_code *regex_PIPELINING   = NULL;
1339 const pcre2_code *regex_SIZE         = NULL;
1340 #ifndef DISABLE_PIPE_CONNECT
1341 const pcre2_code *regex_EARLY_PIPE   = NULL;
1342 #endif
1343 int    regex_cachesize               = 0;
1344 const pcre2_code *regex_ismsgid      = NULL;
1345 const pcre2_code *regex_smtp_code    = NULL;
1346 const uschar *regex_vars[REGEX_VARS] = { NULL };
1347 #ifdef WHITELIST_D_MACROS
1348 const pcre2_code *regex_whitelisted_macro = NULL;
1349 #endif
1350 #ifdef WITH_CONTENT_SCAN
1351 uschar *regex_match_string     = NULL;
1352 #endif
1353 int     remote_delivery_count  = 0;
1354 int     remote_max_parallel    = 4;
1355 uschar *remote_sort_domains    = NULL;
1356 int     retry_data_expire      = 7*24*60*60;
1357 int     retry_interval_max     = 24*60*60;
1358 int     retry_maximum_timeout  = 0;        /* set from retry config */
1359 retry_config  *retries         = NULL;
1360 const uschar *return_path            = NULL;
1361 int     rewrite_existflags     = 0;
1362 uschar *rfc1413_hosts          = US"@[]";
1363 int     rfc1413_query_timeout  = 0;
1364 uid_t   root_gid               = ROOT_GID;
1365 uid_t   root_uid               = ROOT_UID;
1366
1367 router_instance  *routers  = NULL;
1368 router_instance  router_defaults = {
1369     .next =                     NULL,
1370     .name =                     NULL,
1371     .info =                     NULL,
1372     .options_block =            NULL,
1373     .driver_name =              NULL,
1374
1375     .address_data =             NULL,
1376 #ifdef EXPERIMENTAL_BRIGHTMAIL
1377     .bmi_rule =                 NULL,
1378 #endif
1379     .cannot_route_message =     NULL,
1380     .condition =                NULL,
1381     .current_directory =        NULL,
1382     .debug_string =             NULL,
1383     .domains =                  NULL,
1384     .errors_to =                NULL,
1385     .expand_gid =               NULL,
1386     .expand_uid =               NULL,
1387     .expand_more =              NULL,
1388     .expand_unseen =            NULL,
1389     .extra_headers =            NULL,
1390     .fallback_hosts =           NULL,
1391     .home_directory =           NULL,
1392     .ignore_target_hosts =      NULL,
1393     .local_parts =              NULL,
1394     .pass_router_name =         NULL,
1395     .prefix =                   NULL,
1396     .redirect_router_name =     NULL,
1397     .remove_headers =           NULL,
1398     .require_files =            NULL,
1399     .router_home_directory =    NULL,
1400     .self =                     US"freeze",
1401     .senders =                  NULL,
1402     .suffix =                   NULL,
1403     .translate_ip_address =     NULL,
1404     .transport_name =           NULL,
1405
1406     .address_test =             TRUE,
1407 #ifdef EXPERIMENTAL_BRIGHTMAIL
1408     .bmi_deliver_alternate =    FALSE,
1409     .bmi_deliver_default =      FALSE,
1410     .bmi_dont_deliver =         FALSE,
1411 #endif
1412     .expn =                     TRUE,
1413     .caseful_local_part =       FALSE,
1414     .check_local_user =         FALSE,
1415     .disable_logging =          FALSE,
1416     .fail_verify_recipient =    FALSE,
1417     .fail_verify_sender =       FALSE,
1418     .gid_set =                  FALSE,
1419     .initgroups =               FALSE,
1420     .log_as_local =             TRUE_UNSET,
1421     .more =                     TRUE,
1422     .pass_on_timeout =          FALSE,
1423     .prefix_optional =          FALSE,
1424     .repeat_use =               TRUE,
1425     .retry_use_local_part =     TRUE_UNSET,
1426     .same_domain_copy_routing = FALSE,
1427     .self_rewrite =             FALSE,
1428     .set =                      NULL,
1429     .suffix_optional =          FALSE,
1430     .verify_only =              FALSE,
1431     .verify_recipient =         TRUE,
1432     .verify_sender =            TRUE,
1433     .uid_set =                  FALSE,
1434     .unseen =                   FALSE,
1435     .dsn_lasthop =              FALSE,
1436
1437     .self_code =                self_freeze,
1438     .uid =                      (uid_t)(-1),
1439     .gid =                      (gid_t)(-1),
1440
1441     .fallback_hostlist =        NULL,
1442     .transport =                NULL,
1443     .pass_router =              NULL,
1444     .redirect_router =          NULL,
1445
1446     .dnssec =                   { .request= US"*", .require=NULL },
1447 };
1448
1449 uschar *router_name            = NULL;
1450 tree_node *router_var          = NULL;
1451
1452 ip_address_item *running_interfaces = NULL;
1453
1454 /* This is a weird one. The following string gets patched in the binary by the
1455 script that sets up a copy of Exim for running in the test harness. It seems
1456 that compilers are now clever, and share constant strings if they can.
1457 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1458 make use of the end of this string in order to save space. So the patching then
1459 wrecks this. We defeat this optimization by adding some additional characters
1460 onto the end of the string. */
1461
1462 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1463
1464 int     runrc                  = 0;
1465
1466 uschar *search_error_message   = NULL;
1467 uschar *self_hostname          = NULL;
1468 const uschar *sender_address   = NULL;
1469 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1470 uschar *sender_address_data    = NULL;
1471 const uschar *sender_address_unrewritten = NULL;
1472 uschar *sender_data            = NULL;
1473 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1474 uschar *sender_fullhost        = NULL;
1475 uschar *sender_helo_name       = NULL;
1476 uschar **sender_host_aliases   = &no_aliases;
1477 uschar *sender_host_address    = NULL;
1478 uschar *sender_host_authenticated = NULL;
1479 uschar *sender_host_auth_pubname  = NULL;
1480 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1481 uschar *sender_host_name       = NULL;
1482 int     sender_host_port       = 0;
1483 uschar *sender_ident           = NULL;
1484 uschar *sender_rate            = NULL;
1485 uschar *sender_rate_limit      = NULL;
1486 uschar *sender_rate_period     = NULL;
1487 uschar *sender_rcvhost         = NULL;
1488 uschar *sender_unqualified_hosts = NULL;
1489 uschar *sender_verify_failure = NULL;
1490 address_item *sender_verified_list  = NULL;
1491 address_item *sender_verified_failed = NULL;
1492 int     sender_verified_rc     = -1;
1493 uschar *sending_ip_address     = NULL;
1494 int     sending_port           = -1;
1495 SIGNAL_BOOL sigalrm_seen       = FALSE;
1496 const uschar *sigalarm_setter  = NULL;
1497 const uschar **sighup_argv     = NULL;
1498 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1499 int     smtp_accept_count      = 0;
1500 int     smtp_accept_max        = 20;
1501 int     smtp_accept_max_nonmail= 10;
1502 uschar *smtp_accept_max_nonmail_hosts = US"*";
1503 uschar *smtp_accept_max_per_connection = US"1000";
1504 uschar *smtp_accept_max_per_host = NULL;
1505 int     smtp_accept_queue      = 0;
1506 int     smtp_accept_queue_per_connection = 10;
1507 int     smtp_accept_reserve    = 0;
1508 uschar *smtp_active_hostname   = NULL;
1509 int     smtp_backlog_monitor   = 0;
1510 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1511                              "Exim $version_number $tod_full"
1512                              "\0<---------------Space to patch smtp_banner->";
1513 int     smtp_ch_index          = 0;
1514 uschar *smtp_cmd_argument      = NULL;
1515 uschar *smtp_cmd_buffer        = NULL;
1516 struct timeval smtp_connection_start  = {0,0};
1517 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1518 int     smtp_connect_backlog   = 20;
1519 double  smtp_delay_mail        = 0.0;
1520 double  smtp_delay_rcpt        = 0.0;
1521 FILE   *smtp_in                = NULL;
1522 int     smtp_listen_backlog    = 0;
1523 int     smtp_load_reserve      = -1;
1524 int     smtp_mailcmd_count     = 0;
1525 int     smtp_mailcmd_max       = -1;
1526 FILE   *smtp_out               = NULL;
1527 uschar *smtp_etrn_command      = NULL;
1528 int     smtp_max_synprot_errors= 3;
1529 int     smtp_max_unknown_commands = 3;
1530 uschar *smtp_notquit_reason    = NULL;
1531 unsigned smtp_peer_options     = 0;
1532 unsigned smtp_peer_options_wrap= 0;
1533 uschar *smtp_ratelimit_hosts   = NULL;
1534 uschar *smtp_ratelimit_mail    = NULL;
1535 uschar *smtp_ratelimit_rcpt    = NULL;
1536 uschar *smtp_read_error        = US"";
1537 int     smtp_receive_timeout   = 5*60;
1538 uschar *smtp_receive_timeout_s = NULL;
1539 uschar *smtp_reserve_hosts     = NULL;
1540 int     smtp_rlm_base          = 0;
1541 double  smtp_rlm_factor        = 0.0;
1542 int     smtp_rlm_limit         = 0;
1543 int     smtp_rlm_threshold     = INT_MAX;
1544 int     smtp_rlr_base          = 0;
1545 double  smtp_rlr_factor        = 0.0;
1546 int     smtp_rlr_limit         = 0;
1547 int     smtp_rlr_threshold     = INT_MAX;
1548 #ifdef SUPPORT_I18N
1549 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1550 #endif
1551
1552 #ifdef WITH_CONTENT_SCAN
1553 uschar *spamd_address          = US"127.0.0.1 783";
1554 uschar *spam_bar               = NULL;
1555 uschar *spam_report            = NULL;
1556 uschar *spam_action            = NULL;
1557 uschar *spam_score             = NULL;
1558 uschar *spam_score_int         = NULL;
1559 #endif
1560 #ifdef SUPPORT_SPF
1561 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1562 uschar *spf_header_comment     = NULL;
1563 uschar *spf_received           = NULL;
1564 uschar *spf_result             = NULL;
1565 uschar *spf_smtp_comment       = NULL;
1566 uschar *spf_smtp_comment_template
1567                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1568                                = US"Please%_see%_http://www.open-spf.org/Why";
1569
1570 #endif
1571
1572 FILE   *spool_data_file        = NULL;
1573 uschar *spool_directory        = US SPOOL_DIRECTORY
1574                            "\0<--------------Space to patch spool_directory->";
1575 #ifdef SUPPORT_SRS
1576 uschar *srs_recipient          = NULL;
1577 #endif
1578 int     string_datestamp_offset= -1;
1579 int     string_datestamp_length= 0;
1580 int     string_datestamp_type  = -1;
1581 const uschar *submission_domain = NULL;
1582 const uschar *submission_name  = NULL;
1583 int     syslog_facility        = LOG_MAIL;
1584 const uschar *syslog_processname= US"exim";
1585 uschar *system_filter          = NULL;
1586
1587 uschar *system_filter_directory_transport = NULL;
1588 uschar *system_filter_file_transport = NULL;
1589 uschar *system_filter_pipe_transport = NULL;
1590 uschar *system_filter_reply_transport = NULL;
1591
1592 gid_t   system_filter_gid      = 0;
1593 uid_t   system_filter_uid      = (uid_t)-1;
1594
1595 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1596 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1597 #ifdef USE_TCP_WRAPPERS
1598 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1599 #endif
1600 int     test_harness_load_avg  = 0;
1601 int     thismessage_size_limit = 0;
1602 int     timeout_frozen_after   = 0;
1603 #ifdef MEASURE_TIMING
1604 struct timeval timestamp_startup;
1605 #endif
1606
1607 transport_instance  *transports = NULL;
1608
1609 transport_instance  transport_defaults = {
1610     /* All non-mentioned elements zero/NULL/FALSE */
1611     .batch_max =                1,
1612     .multi_domain =             TRUE,
1613     .max_addresses =            US"100",
1614     .connection_max_messages =  500,
1615     .uid =                      (uid_t)(-1),
1616     .gid =                      (gid_t)(-1),
1617     .filter_timeout =           300,
1618     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1619                                                  1 nor 0 so can detect unset */
1620 };
1621
1622 int     transport_count;
1623 uschar *transport_name          = NULL;
1624 int     transport_newlines;
1625 const uschar **transport_filter_argv  = NULL;
1626 int     transport_filter_timeout;
1627 int     transport_write_timeout= 0;
1628
1629 tree_node  *tree_dns_fails     = NULL;
1630 tree_node  *tree_duplicates    = NULL;
1631 tree_node  *tree_nonrecipients = NULL;
1632 tree_node  *tree_unusable      = NULL;
1633
1634 gid_t  *trusted_groups         = NULL;
1635 uid_t  *trusted_users          = NULL;
1636 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1637
1638 uschar *unknown_login          = NULL;
1639 uschar *unknown_username       = NULL;
1640 uschar *untrusted_set_sender   = NULL;
1641
1642 /*  A regex for matching a "From_" line in an incoming message, in the form
1643
1644     From ph10 Fri Jan  5 12:35 GMT 1996
1645
1646 which  the "mail" commands send to the MTA (undocumented, of course), or in
1647 the  form
1648
1649     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1650
1651 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1652 Because  of variations in time formats, just match up to the minutes. That
1653 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1654 so  just require one digit for hours and minutes. The weekday is also absent
1655 in  some forms. */
1656
1657 uschar *uucp_from_pattern      = US
1658    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1659    "(?:"                                          /* Non-extracting bracket */
1660    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1661    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1662    ")"                                            /* End alternation */
1663    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1664
1665 uschar *uucp_from_sender       = US"$1";
1666
1667 uschar *verify_mode            = NULL;
1668 uschar *version_copyright      =
1669  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1670    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2022";
1671 uschar *version_date           = US"?";
1672 uschar *version_cnumber        = US"????";
1673 uschar *version_string         = US"?";
1674
1675 uschar *warn_message_file      = NULL;
1676 int     warning_count          = 0;
1677 const uschar *warnmsg_delay    = NULL;
1678 const uschar *warnmsg_recipients = NULL;
1679
1680 #ifndef DISABLE_WELLKNOWN
1681 uschar *wellknown_advertise_hosts = NULL;
1682 uschar *wellknown_response     = NULL;
1683 #endif
1684
1685 /*  End of globals.c */
1686 /* vi: aw ai sw=2
1687 */