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 const uschar *connection_id    = NULL;
 743 int     connection_max_messages= -1;
 744 unsigned continue_flags        = 0;
 745 #ifndef DISABLE_ESMTP_LIMITS
 746 unsigned continue_limit_mail   = 0;
 747 unsigned continue_limit_rcpt   = 0;
 748 unsigned continue_limit_rcptdom= 0;
 749 int     continue_fd            = -1;
 750 uschar *continue_proxy_cipher  = NULL;
 751 BOOL    continue_proxy_dane    = FALSE;
 752 uschar *continue_proxy_sni     = NULL;
 753 const uschar *continue_hostname      = NULL;
 754 const uschar *continue_host_address  = NULL;
 755 uschar  continue_next_id[MESSAGE_ID_LENGTH +1] = {[0]='\0'};
 756 int     continue_sequence      = 1;
 757 uschar *continue_transport     = NULL;
 758 #ifndef COMPILE_UTILITY
 759 open_db *continue_retry_db     = NULL;
 760 open_db *continue_wait_db      = NULL;
 761 #endif
 762 #endif
 763
 764 uschar *csa_status             = NULL;
 765 cut_t   cutthrough = {
 766   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 767   .delivery =           FALSE,                          /* when to attempt */
 768   .defer_pass =         FALSE,                          /* on defer: spool locally */
 769   .is_tls =             FALSE,                          /* not a TLS conn yet */
 770   .cctx =               {.sock = -1},                   /* open connection */
 771   .nrcpt =              0,                              /* number of addresses */
 772 };
 773
 774 int     daemon_notifier_fd     = -1;
 775 uschar *daemon_smtp_port       = US"smtp";
 776 int     daemon_startup_retries = 9;
 777 int     daemon_startup_sleep   = 30;
 778
 779 #ifdef EXPERIMENTAL_DCC
 780 uschar *dcc_header             = NULL;
 781 uschar *dcc_result             = NULL;
 782 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 783 uschar *dccifd_options         = US"header";
 784 #endif
 785
 786 int     debug_fd               = -1;
 787 FILE   *debug_file             = NULL;
 788 int     debug_notall[]         = {
 789   Di_memory,
 790   Di_noutf8,
 791   -1
 792 };
 793 bit_table debug_options[]      = { /* must be in alphabetical order and use
 794                                  only the enum values from macro.h */
 795   BIT_TABLE(D, acl),
 796   BIT_TABLE(D, all),
 797   BIT_TABLE(D, auth),
 798   BIT_TABLE(D, deliver),
 799   BIT_TABLE(D, dns),
 800   BIT_TABLE(D, dnsbl),
 801   BIT_TABLE(D, exec),
 802   BIT_TABLE(D, expand),
 803   BIT_TABLE(D, filter),
 804   BIT_TABLE(D, hints_lookup),
 805   BIT_TABLE(D, host_lookup),
 806   BIT_TABLE(D, ident),
 807   BIT_TABLE(D, interface),
 808   BIT_TABLE(D, lists),
 809   BIT_TABLE(D, load),
 810   BIT_TABLE(D, local_scan),
 811   BIT_TABLE(D, lookup),
 812   BIT_TABLE(D, memory),
 813   BIT_TABLE(D, noutf8),
 814   BIT_TABLE(D, pid),
 815   BIT_TABLE(D, process_info),
 816   BIT_TABLE(D, queue_run),
 817   BIT_TABLE(D, receive),
 818   BIT_TABLE(D, resolver),
 819   BIT_TABLE(D, retry),
 820   BIT_TABLE(D, rewrite),
 821   BIT_TABLE(D, route),
 822   BIT_TABLE(D, timestamp),
 823   BIT_TABLE(D, tls),
 824   BIT_TABLE(D, transport),
 825   BIT_TABLE(D, uid),
 826   BIT_TABLE(D, verify),
 827 };
 828 int      debug_options_count    = nelem(debug_options);
 829 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 830 unsigned debug_pretrigger_bsize = 0;
 831 uschar * debug_pretrigger_buf   = NULL;
 832 unsigned int debug_selector     = 0;
 833
 834 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 835 uschar *delay_warning_condition=
 836   US"${if or {"
 837             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 838             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 839             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 840             "} {no}{yes}}";
 841 uschar *deliver_address_data   = NULL;
 842 int     deliver_datafile       = -1;
 843 const uschar *deliver_domain   = NULL;
 844 uschar *deliver_domain_data    = NULL;
 845 const uschar *deliver_domain_orig = NULL;
 846 const uschar *deliver_domain_parent = NULL;
 847 time_t  deliver_frozen_at      = 0;
 848 uschar *deliver_home           = NULL;
 849 const uschar *deliver_host     = NULL;
 850 const uschar *deliver_host_address = NULL;
 851 int     deliver_host_port      = 0;
 852 uschar *deliver_in_buffer      = NULL;
 853 ino_t   deliver_inode          = 0;
 854 const uschar *deliver_localpart= NULL;
 855 uschar *deliver_localpart_data = NULL;
 856 const uschar *deliver_localpart_orig = NULL;
 857 const uschar *deliver_localpart_parent = NULL;
 858 const uschar *deliver_localpart_prefix = NULL;
 859 const uschar *deliver_localpart_prefix_v = NULL;
 860 const uschar *deliver_localpart_suffix = NULL;
 861 const uschar *deliver_localpart_suffix_v = NULL;
 862 uschar *deliver_out_buffer     = NULL;
 863 int     deliver_queue_load_max = -1;
 864 address_item  *deliver_recipients = NULL;
 865 uschar *deliver_selectstring   = NULL;
 866 uschar *deliver_selectstring_sender = NULL;
 867
 868 #ifndef DISABLE_DKIM
 869 unsigned dkim_collect_input      = 0;
 870 uschar *dkim_cur_signer          = NULL;
 871 int     dkim_key_length          = 0;
 872 void   *dkim_signatures          = NULL;
 873 uschar *dkim_signers             = NULL;
 874 uschar *dkim_signing_domain      = NULL;
 875 uschar *dkim_signing_selector    = NULL;
 876 gstring *dkim_signing_record     = NULL;
 877 uschar *dkim_verify_hashes       = US"sha256:sha512";
 878 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 879 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 880 BOOL    dkim_verify_minimal      = FALSE;
 881 uschar *dkim_verify_overall      = NULL;
 882 uschar *dkim_verify_signers      = US"$dkim_signers";
 883 uschar *dkim_verify_status       = NULL;
 884 uschar *dkim_verify_reason       = NULL;
 885 #endif
 886 #ifdef SUPPORT_DMARC
 887 uschar *dmarc_domain_policy     = NULL;
 888 uschar *dmarc_forensic_sender   = NULL;
 889 uschar *dmarc_history_file      = NULL;
 890 uschar *dmarc_status            = NULL;
 891 uschar *dmarc_status_text       = NULL;
 892 uschar *dmarc_tld_file          = NULL;
 893 uschar *dmarc_used_domain       = NULL;
 894 #endif
 895
 896 uschar *dns_again_means_nonexist = NULL;
 897 int     dns_csa_search_limit   = 5;
 898 int     dns_cname_loops        = 1;
 899 #ifdef SUPPORT_DANE
 900 int     dns_dane_ok            = -1;
 901 #endif
 902 uschar *dns_ipv4_lookup        = NULL;
 903 int     dns_retrans            = 0;
 904 int     dns_retry              = 0;
 905 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 906 uschar *dns_trust_aa           = NULL;
 907 int     dns_use_edns0          = -1; /* <0 = not coerced */
 908 uschar *dnslist_domain         = NULL;
 909 uschar *dnslist_matched        = NULL;
 910 uschar *dnslist_text           = NULL;
 911 uschar *dnslist_value          = NULL;
 912 tree_node *domainlist_anchor   = NULL;
 913 int     domainlist_count       = 0;
 914 const uschar *driver_srcfile   = NULL;
 915 int     driver_srcline         = 0;
 916 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 917 unsigned int dtrigger_selector = 0;
 918
 919 int     errno_quota            = ERRNO_QUOTA;
 920 uschar *errors_copy            = NULL;
 921 int     error_handling         = ERRORS_SENDER;
 922 uschar *errors_reply_to        = NULL;
 923 int     errors_sender_rc       = EXIT_FAILURE;
 924 #ifndef DISABLE_EVENT
 925 uschar *event_action           = NULL;  /* expansion for delivery events */
 926 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 927 int     event_defer_errno      = 0;
 928 const uschar *event_name       = NULL;  /* event name variable */
 929 #endif
 930
 931
 932 gid_t   exim_gid               = EXIM_GID;
 933 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 934                         "\0<---------------Space to patch exim_path->";
 935 uid_t   exim_uid               = EXIM_UID;
 936 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 937 int     expand_forbid          = 0;
 938 int     expand_nlength[EXPAND_MAXN+1];
 939 int     expand_nmax            = -1;
 940 const uschar *expand_nstring[EXPAND_MAXN+1];
 941 uschar *expand_string_message;
 942 uschar *extra_local_interfaces = NULL;
 943
 944 int     fake_response          = OK;
 945 uschar *fake_response_text     = US"Your message has been rejected but is "
 946                                    "being kept for evaluation.\nIf it was a "
 947                                    "legitimate message, it may still be "
 948                                    "delivered to the target recipient(s).";
 949 int     filter_n[FILTER_VARIABLE_COUNT];
 950 int     filter_sn[FILTER_VARIABLE_COUNT];
 951 int     filter_test            = FTEST_NONE;
 952 const uschar * filter_test_sfile = NULL;
 953 const uschar * filter_test_ufile = NULL;
 954 uschar *filter_thisaddress     = NULL;
 955 int     finduser_retries       = 0;
 956 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 957 uschar *freeze_tell            = NULL;
 958 uschar *freeze_tell_config     = NULL;
 959 uschar *fudged_queue_times     = US"";
 960
 961 uschar *gecos_name             = NULL;
 962 uschar *gecos_pattern          = NULL;
 963 rewrite_rule  *global_rewrite_rules = NULL;
 964
 965 volatile sig_atomic_t had_command_timeout = 0;
 966 volatile sig_atomic_t had_command_sigterm = 0;
 967 volatile sig_atomic_t had_data_timeout    = 0;
 968 volatile sig_atomic_t had_data_sigint     = 0;
 969 const uschar *headers_charset  = US HEADERS_CHARSET;
 970 int     header_insert_maxlen   = 64 * 1024;
 971 header_line  *header_last      = NULL;
 972 header_line  *header_list      = NULL;
 973 int     header_maxsize         = HEADER_MAXSIZE;
 974 int     header_line_maxsize    = 0;
 975
 976 header_name header_names[] = {
 977   /* name               len     allow_resent    htype */
 978   { US"bcc",            3,      TRUE,           htype_bcc },
 979   { US"cc",             2,      TRUE,           htype_cc },
 980   { US"date",           4,      TRUE,           htype_date },
 981   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 982   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 983   { US"from",           4,      TRUE,           htype_from },
 984   { US"message-id",    10,      TRUE,           htype_id },
 985   { US"received",       8,      FALSE,          htype_received },
 986   { US"reply-to",       8,      FALSE,          htype_reply_to },
 987   { US"return-path",   11,      FALSE,          htype_return_path },
 988   { US"sender",         6,      TRUE,           htype_sender },
 989   { US"subject",        7,      FALSE,          htype_subject },
 990   { US"to",             2,      TRUE,           htype_to }
 991 };
 992
 993 int header_names_size          = nelem(header_names);
 994
 995 uschar *helo_accept_junk_hosts = NULL;
 996 uschar *helo_allow_chars       = US"";
 997 uschar *helo_lookup_domains    = US"@ : @[]";
 998 uschar *helo_try_verify_hosts  = NULL;
 999 uschar *helo_verify_hosts      = NULL;
1000 const uschar *hex_digits       = CUS"0123456789abcdef";
1001 uschar *hold_domains           = NULL;
1002 uschar *host_data              = NULL;
1003 uschar *host_lookup            = NULL;
1004 uschar *host_lookup_order      = US"bydns:byaddr";
1005 uschar *host_lookup_msg        = US"";
1006 int     host_number            = 0;
1007 uschar *host_number_string     = NULL;
1008 uschar *host_reject_connection = NULL;
1009 uschar *hosts_connection_nolog = NULL;
1010 #ifdef SUPPORT_PROXY
1011 uschar *hosts_proxy            = NULL;
1012 #endif
1013 uschar *hosts_treat_as_local   = NULL;
1014 uschar *hosts_require_helo     = US"*";
1015 #ifdef EXPERIMENTAL_XCLIENT
1016 uschar *hosts_xclient          = NULL;
1017 #endif
1018 tree_node *hostlist_anchor     = NULL;
1019 int     hostlist_count         = 0;
1020
1021
1022 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1023 uschar *ignore_fromline_hosts  = NULL;
1024 int     inetd_wait_timeout     = -1;
1025 uschar *initial_cwd            = NULL;
1026 uschar *interface_address      = NULL;
1027 int     interface_port         = -1;
1028 uschar *iterate_item           = NULL;
1029
1030 int     journal_fd             = -1;
1031
1032 uschar *keep_environment       = NULL;
1033
1034 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1035
1036 uschar *eldap_dn               = NULL;
1037 const uschar *letter_digit_hyphen_dot =
1038     US"abcdefghijklmnopqrstuvwxyz"
1039       ".-0123456789"
1040       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1041 #ifndef DISABLE_ESMTP_LIMITS
1042 uschar *limits_advertise_hosts = US"*";
1043 #endif
1044 int     load_average           = -2;
1045 uschar *local_from_prefix      = NULL;
1046 uschar *local_from_suffix      = NULL;
1047
1048 #if HAVE_IPV6
1049 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1050 #else
1051 uschar *local_interfaces       = US"0.0.0.0";
1052 #endif
1053
1054 #ifdef HAVE_LOCAL_SCAN
1055 uschar *local_scan_data        = NULL;
1056 int     local_scan_timeout     = 5*60;
1057 #endif
1058 gid_t   local_user_gid         = (gid_t)(-1);
1059 uid_t   local_user_uid         = (uid_t)(-1);
1060
1061 tree_node *localpartlist_anchor= NULL;
1062 int     localpartlist_count    = 0;
1063 uschar *log_buffer             = NULL;
1064
1065 int     log_default[]          = { /* for initializing log_selector */
1066   Li_acl_warn_skipped,
1067   Li_connection_reject,
1068   Li_delay_delivery,
1069   Li_dkim,
1070   Li_dnslist_defer,
1071   Li_etrn,
1072   Li_host_lookup_failed,
1073   Li_lost_incoming_connection,
1074   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1075   Li_msg_id,
1076   Li_queue_run,
1077   Li_queue_time_exclusive,
1078   Li_rejected_header,
1079   Li_retry_defer,
1080   Li_sender_verify_fail,
1081   Li_size_reject,
1082   Li_skip_delivery,
1083   Li_smtp_confirmation,
1084   Li_tls_certificate_verified,
1085   Li_tls_cipher,
1086   -1
1087 };
1088
1089 uschar *log_file_path          = US LOG_FILE_PATH
1090                            "\0<--------------Space to patch log_file_path->";
1091
1092 int     log_notall[]           = {
1093   -1
1094 };
1095 bit_table log_options[]        = { /* must be in alphabetical order,
1096                                 with definitions from enum logbit. */
1097   BIT_TABLE(L, 8bitmime),
1098   BIT_TABLE(L, acl_warn_skipped),
1099   BIT_TABLE(L, address_rewrite),
1100   BIT_TABLE(L, all),
1101   BIT_TABLE(L, all_parents),
1102   BIT_TABLE(L, arguments),
1103   BIT_TABLE(L, connection_id),
1104   BIT_TABLE(L, connection_reject),
1105   BIT_TABLE(L, delay_delivery),
1106   BIT_TABLE(L, deliver_time),
1107   BIT_TABLE(L, delivery_size),
1108 #ifndef DISABLE_DKIM
1109   BIT_TABLE(L, dkim),
1110   BIT_TABLE(L, dkim_verbose),
1111 #endif
1112   BIT_TABLE(L, dnslist_defer),
1113   BIT_TABLE(L, dnssec),
1114   BIT_TABLE(L, etrn),
1115   BIT_TABLE(L, host_lookup_failed),
1116   BIT_TABLE(L, ident_timeout),
1117   BIT_TABLE(L, incoming_interface),
1118   BIT_TABLE(L, incoming_port),
1119   BIT_TABLE(L, lost_incoming_connection),
1120   BIT_TABLE(L, millisec),
1121   BIT_TABLE(L, msg_id),
1122   BIT_TABLE(L, msg_id_created),
1123   BIT_TABLE(L, outgoing_interface),
1124   BIT_TABLE(L, outgoing_port),
1125   BIT_TABLE(L, pid),
1126   BIT_TABLE(L, pipelining),
1127   BIT_TABLE(L, protocol_detail),
1128 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1129   BIT_TABLE(L, proxy),
1130 #endif
1131   BIT_TABLE(L, queue_run),
1132   BIT_TABLE(L, queue_time),
1133   BIT_TABLE(L, queue_time_exclusive),
1134   BIT_TABLE(L, queue_time_overall),
1135   BIT_TABLE(L, receive_time),
1136   BIT_TABLE(L, received_recipients),
1137   BIT_TABLE(L, received_sender),
1138   BIT_TABLE(L, rejected_header),
1139   { US"rejected_headers", Li_rejected_header },
1140   BIT_TABLE(L, retry_defer),
1141   BIT_TABLE(L, return_path_on_delivery),
1142   BIT_TABLE(L, sender_on_delivery),
1143   BIT_TABLE(L, sender_verify_fail),
1144   BIT_TABLE(L, size_reject),
1145   BIT_TABLE(L, skip_delivery),
1146   BIT_TABLE(L, smtp_confirmation),
1147   BIT_TABLE(L, smtp_connection),
1148   BIT_TABLE(L, smtp_incomplete_transaction),
1149   BIT_TABLE(L, smtp_mailauth),
1150   BIT_TABLE(L, smtp_no_mail),
1151   BIT_TABLE(L, smtp_protocol_error),
1152   BIT_TABLE(L, smtp_syntax_error),
1153   BIT_TABLE(L, subject),
1154   BIT_TABLE(L, tls_certificate_verified),
1155   BIT_TABLE(L, tls_cipher),
1156   BIT_TABLE(L, tls_peerdn),
1157   BIT_TABLE(L, tls_resumption),
1158   BIT_TABLE(L, tls_sni),
1159   BIT_TABLE(L, unknown_in_list),
1160 };
1161 int     log_options_count      = nelem(log_options);
1162
1163 int     log_reject_target      = 0;
1164 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1165 uschar *log_selector_string    = NULL;
1166 FILE   *log_stderr             = NULL;
1167 uschar *login_sender_address   = NULL;
1168 uschar *lookup_dnssec_authenticated = NULL;
1169 int     lookup_open_max        = 25;
1170 uschar *lookup_value           = NULL;
1171
1172 macro_item *macros_user        = NULL;
1173 uschar *mailstore_basename     = NULL;
1174 #ifdef WITH_CONTENT_SCAN
1175 uschar *malware_name           = NULL;  /* Virus Name */
1176 #endif
1177 int     max_received_linelength= 0;
1178 int     max_username_length    = 0;
1179 int     message_age            = 0;
1180 uschar *message_body           = NULL;
1181 uschar *message_body_end       = NULL;
1182 int     message_body_size      = 0;
1183 int     message_body_visible   = 500;
1184 int     message_ended          = END_NOTSTARTED;
1185 uschar *message_headers        = NULL;
1186 uschar *message_id;
1187 uschar *message_id_domain      = NULL;
1188 uschar *message_id_text        = NULL;
1189 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1190 uschar *message_id_external;
1191 int     message_linecount      = 0;
1192 int     message_size           = 0;
1193 uschar *message_size_limit     = US"50M";
1194 #ifdef SUPPORT_I18N
1195 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1196 #endif
1197 uschar  message_subdir[2]      = { 0, 0 };
1198 const uschar *message_reference= NULL;
1199
1200 /* MIME ACL expandables */
1201 #ifdef WITH_CONTENT_SCAN
1202 int     mime_anomaly_level     = 0;
1203 const uschar *mime_anomaly_text      = NULL;
1204 uschar *mime_boundary          = NULL;
1205 uschar *mime_charset           = NULL;
1206 uschar *mime_content_description = NULL;
1207 uschar *mime_content_disposition = NULL;
1208 uschar *mime_content_id        = NULL;
1209 unsigned int mime_content_size = 0;
1210 uschar *mime_content_transfer_encoding = NULL;
1211 uschar *mime_content_type      = NULL;
1212 uschar *mime_decoded_filename  = NULL;
1213 uschar *mime_filename          = NULL;
1214 int     mime_is_multipart      = 0;
1215 int     mime_is_coverletter    = 0;
1216 int     mime_is_rfc822         = 0;
1217 int     mime_part_count        = -1;
1218 #endif
1219
1220 uid_t  *never_users            = NULL;
1221 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1222
1223 const int on                   = 1;     /* for setsockopt */
1224 const int off                  = 0;
1225
1226 uid_t   original_euid;
1227 gid_t   originator_gid;
1228 uschar *originator_login       = NULL;
1229 uschar *originator_name        = NULL;
1230 uid_t   originator_uid;
1231 uschar *override_local_interfaces = NULL;
1232 const uschar *override_pid_file_path = NULL;
1233
1234 BOOL    panic_coredump         = FALSE;
1235 pcre2_general_context * pcre_gen_ctx = NULL;
1236 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1237 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1238 pcre2_general_context * pcre_mlc_ctx = NULL;
1239 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1240
1241 uschar *percent_hack_domains   = NULL;
1242 const uschar *pid_file_path    = US PID_FILE_PATH
1243                            "\0<--------------Space to patch pid_file_path->";
1244 #ifndef DISABLE_PIPE_CONNECT
1245 uschar *pipe_connect_advertise_hosts = US"*";
1246 #endif
1247 uschar *pipelining_advertise_hosts = US"*";
1248 uschar *primary_hostname       = NULL;
1249 uschar *process_info;
1250 int     process_info_len       = 0;
1251 uschar *process_log_path       = NULL;
1252 const uschar *process_purpose  = US"fresh-exec";
1253
1254 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1255 uschar *proxy_external_address = NULL;
1256 int     proxy_external_port    = 0;
1257 uschar *proxy_local_address    = NULL;
1258 int     proxy_local_port       = 0;
1259 int     proxy_protocol_timeout = 3;
1260 #endif
1261
1262 uschar *prvscheck_address      = NULL;
1263 uschar *prvscheck_keynum       = NULL;
1264 uschar *prvscheck_result       = NULL;
1265
1266
1267 qrunner *qrunners              = NULL;
1268
1269 const uschar *qualify_domain_recipient = NULL;
1270 uschar *qualify_domain_sender  = NULL;
1271 uschar *queue_domains          = NULL;
1272 int     queue_interval         = -1;
1273 uschar *queue_name             = US"";
1274 uschar *queue_name_dest        = NULL;
1275 uschar *queue_only_file        = NULL;
1276 int     queue_only_load        = -1;
1277 uschar *queue_run_max          = US"5";
1278 pid_t   queue_run_pid          = (pid_t)0;
1279 int     queue_run_pipe         = -1;
1280 unsigned queue_size            = 0;
1281 time_t  queue_size_next        = 0;
1282 uschar *queue_smtp_domains     = NULL;
1283
1284 uint32_t random_seed           = 0;
1285 tree_node *ratelimiters_cmd    = NULL;
1286 tree_node *ratelimiters_conn   = NULL;
1287 tree_node *ratelimiters_mail   = NULL;
1288 uschar *raw_active_hostname    = NULL;
1289 const uschar *raw_sender       = NULL;
1290 const uschar **raw_recipients  = NULL;
1291 int     raw_recipients_count   = 0;
1292
1293 int     rcpt_count             = 0;
1294 int     rcpt_fail_count        = 0;
1295 int     rcpt_defer_count       = 0;
1296 gid_t   real_gid;
1297 uid_t   real_uid;
1298 int     receive_linecount      = 0;
1299 int     receive_messagecount   = 0;
1300 int     receive_timeout        = 0;
1301 int     received_count         = 0;
1302 const uschar *received_for     = NULL;
1303
1304 /*  This is the default text for Received headers generated by Exim. The
1305 date  will be automatically added on the end. */
1306
1307 uschar *received_header_text   = US
1308      "Received: "
1309      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1310        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1311          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1312      "by $primary_hostname "
1313      "${if def:received_protocol {with $received_protocol }}"
1314 #ifndef DISABLE_TLS
1315      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1316      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1317 #endif
1318      "(Exim $version_number)\n\t"
1319      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1320      "id $message_exim_id"
1321      "${if def:received_for {\n\tfor $received_for}}"
1322      "\0<---------------Space to patch received_header_text->";
1323
1324 int     received_headers_max   = 30;
1325 uschar *received_protocol      = NULL;
1326 struct timeval received_time   = { 0, 0 };
1327 struct timeval received_time_complete = { 0, 0 };
1328 uschar *recipient_data         = NULL;
1329 uschar *recipient_unqualified_hosts = NULL;
1330 uschar *recipient_verify_failure = NULL;
1331 int     recipients_count       = 0;
1332 recipient_item  *recipients_list = NULL;
1333 int     recipients_list_max    = 0;
1334 uschar *recipients_max         = US"50000";
1335 int     recipients_max_expanded= 0;
1336 const pcre2_code *regex_AUTH         = NULL;
1337 const pcre2_code *regex_check_dns_names = NULL;
1338 const pcre2_code *regex_From         = NULL;
1339 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1340 const pcre2_code *regex_PIPELINING   = NULL;
1341 const pcre2_code *regex_SIZE         = NULL;
1342 #ifndef DISABLE_PIPE_CONNECT
1343 const pcre2_code *regex_EARLY_PIPE   = NULL;
1344 #endif
1345 int    regex_cachesize               = 0;
1346 const pcre2_code *regex_ismsgid      = NULL;
1347 const pcre2_code *regex_smtp_code    = NULL;
1348 const uschar *regex_vars[REGEX_VARS] = { NULL };
1349 #ifdef WHITELIST_D_MACROS
1350 const pcre2_code *regex_whitelisted_macro = NULL;
1351 #endif
1352 #ifdef WITH_CONTENT_SCAN
1353 uschar *regex_match_string     = NULL;
1354 #endif
1355 int     remote_delivery_count  = 0;
1356 int     remote_max_parallel    = 4;
1357 uschar *remote_sort_domains    = NULL;
1358 int     retry_data_expire      = 7*24*60*60;
1359 int     retry_interval_max     = 24*60*60;
1360 int     retry_maximum_timeout  = 0;        /* set from retry config */
1361 retry_config  *retries         = NULL;
1362 const uschar *return_path            = NULL;
1363 int     rewrite_existflags     = 0;
1364 uschar *rfc1413_hosts          = US"@[]";
1365 int     rfc1413_query_timeout  = 0;
1366 uid_t   root_gid               = ROOT_GID;
1367 uid_t   root_uid               = ROOT_UID;
1368
1369 router_instance  *routers  = NULL;
1370 router_instance  router_defaults = {
1371     .next =                     NULL,
1372     .name =                     NULL,
1373     .info =                     NULL,
1374     .options_block =            NULL,
1375     .driver_name =              NULL,
1376
1377     .address_data =             NULL,
1378 #ifdef EXPERIMENTAL_BRIGHTMAIL
1379     .bmi_rule =                 NULL,
1380 #endif
1381     .cannot_route_message =     NULL,
1382     .condition =                NULL,
1383     .current_directory =        NULL,
1384     .debug_string =             NULL,
1385     .domains =                  NULL,
1386     .errors_to =                NULL,
1387     .expand_gid =               NULL,
1388     .expand_uid =               NULL,
1389     .expand_more =              NULL,
1390     .expand_unseen =            NULL,
1391     .extra_headers =            NULL,
1392     .fallback_hosts =           NULL,
1393     .home_directory =           NULL,
1394     .ignore_target_hosts =      NULL,
1395     .local_parts =              NULL,
1396     .pass_router_name =         NULL,
1397     .prefix =                   NULL,
1398     .redirect_router_name =     NULL,
1399     .remove_headers =           NULL,
1400     .require_files =            NULL,
1401     .router_home_directory =    NULL,
1402     .self =                     US"freeze",
1403     .senders =                  NULL,
1404     .suffix =                   NULL,
1405     .translate_ip_address =     NULL,
1406     .transport_name =           NULL,
1407
1408     .address_test =             TRUE,
1409 #ifdef EXPERIMENTAL_BRIGHTMAIL
1410     .bmi_deliver_alternate =    FALSE,
1411     .bmi_deliver_default =      FALSE,
1412     .bmi_dont_deliver =         FALSE,
1413 #endif
1414     .expn =                     TRUE,
1415     .caseful_local_part =       FALSE,
1416     .check_local_user =         FALSE,
1417     .disable_logging =          FALSE,
1418     .fail_verify_recipient =    FALSE,
1419     .fail_verify_sender =       FALSE,
1420     .gid_set =                  FALSE,
1421     .initgroups =               FALSE,
1422     .log_as_local =             TRUE_UNSET,
1423     .more =                     TRUE,
1424     .pass_on_timeout =          FALSE,
1425     .prefix_optional =          FALSE,
1426     .repeat_use =               TRUE,
1427     .retry_use_local_part =     TRUE_UNSET,
1428     .same_domain_copy_routing = FALSE,
1429     .self_rewrite =             FALSE,
1430     .set =                      NULL,
1431     .suffix_optional =          FALSE,
1432     .verify_only =              FALSE,
1433     .verify_recipient =         TRUE,
1434     .verify_sender =            TRUE,
1435     .uid_set =                  FALSE,
1436     .unseen =                   FALSE,
1437     .dsn_lasthop =              FALSE,
1438
1439     .self_code =                self_freeze,
1440     .uid =                      (uid_t)(-1),
1441     .gid =                      (gid_t)(-1),
1442
1443     .fallback_hostlist =        NULL,
1444     .transport =                NULL,
1445     .pass_router =              NULL,
1446     .redirect_router =          NULL,
1447
1448     .dnssec =                   { .request= US"*", .require=NULL },
1449 };
1450
1451 uschar *router_name            = NULL;
1452 tree_node *router_var          = NULL;
1453
1454 ip_address_item *running_interfaces = NULL;
1455
1456 /* This is a weird one. The following string gets patched in the binary by the
1457 script that sets up a copy of Exim for running in the test harness. It seems
1458 that compilers are now clever, and share constant strings if they can.
1459 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1460 make use of the end of this string in order to save space. So the patching then
1461 wrecks this. We defeat this optimization by adding some additional characters
1462 onto the end of the string. */
1463
1464 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1465
1466 int     runrc                  = 0;
1467
1468 uschar *search_error_message   = NULL;
1469 uschar *self_hostname          = NULL;
1470 const uschar *sender_address   = NULL;
1471 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1472 uschar *sender_address_data    = NULL;
1473 const uschar *sender_address_unrewritten = NULL;
1474 uschar *sender_data            = NULL;
1475 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1476 uschar *sender_fullhost        = NULL;
1477 uschar *sender_helo_name       = NULL;
1478 uschar **sender_host_aliases   = &no_aliases;
1479 uschar *sender_host_address    = NULL;
1480 uschar *sender_host_authenticated = NULL;
1481 uschar *sender_host_auth_pubname  = NULL;
1482 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1483 uschar *sender_host_name       = NULL;
1484 int     sender_host_port       = 0;
1485 uschar *sender_ident           = NULL;
1486 uschar *sender_rate            = NULL;
1487 uschar *sender_rate_limit      = NULL;
1488 uschar *sender_rate_period     = NULL;
1489 uschar *sender_rcvhost         = NULL;
1490 uschar *sender_unqualified_hosts = NULL;
1491 uschar *sender_verify_failure = NULL;
1492 address_item *sender_verified_list  = NULL;
1493 address_item *sender_verified_failed = NULL;
1494 int     sender_verified_rc     = -1;
1495 uschar *sending_ip_address     = NULL;
1496 int     sending_port           = -1;
1497 SIGNAL_BOOL sigalrm_seen       = FALSE;
1498 const uschar *sigalarm_setter  = NULL;
1499 const uschar **sighup_argv     = NULL;
1500 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1501 int     smtp_accept_count      = 0;
1502 int     smtp_accept_max        = 20;
1503 int     smtp_accept_max_nonmail= 10;
1504 uschar *smtp_accept_max_nonmail_hosts = US"*";
1505 uschar *smtp_accept_max_per_connection = US"1000";
1506 uschar *smtp_accept_max_per_host = NULL;
1507 int     smtp_accept_queue      = 0;
1508 int     smtp_accept_queue_per_connection = 10;
1509 int     smtp_accept_reserve    = 0;
1510 uschar *smtp_active_hostname   = NULL;
1511 int     smtp_backlog_monitor   = 0;
1512 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1513                              "Exim $version_number $tod_full"
1514                              "\0<---------------Space to patch smtp_banner->";
1515 int     smtp_ch_index          = 0;
1516 uschar *smtp_cmd_argument      = NULL;
1517 uschar *smtp_cmd_buffer        = NULL;
1518 struct timeval smtp_connection_start  = {0,0};
1519 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1520 int     smtp_connect_backlog   = 20;
1521 double  smtp_delay_mail        = 0.0;
1522 double  smtp_delay_rcpt        = 0.0;
1523 FILE   *smtp_in                = NULL;
1524 int     smtp_listen_backlog    = 0;
1525 int     smtp_load_reserve      = -1;
1526 int     smtp_mailcmd_count     = 0;
1527 int     smtp_mailcmd_max       = -1;
1528 FILE   *smtp_out               = NULL;
1529 uschar *smtp_etrn_command      = NULL;
1530 int     smtp_max_synprot_errors= 3;
1531 int     smtp_max_unknown_commands = 3;
1532 uschar *smtp_notquit_reason    = NULL;
1533 unsigned smtp_peer_options     = 0;
1534 unsigned smtp_peer_options_wrap= 0;
1535 uschar *smtp_ratelimit_hosts   = NULL;
1536 uschar *smtp_ratelimit_mail    = NULL;
1537 uschar *smtp_ratelimit_rcpt    = NULL;
1538 uschar *smtp_read_error        = US"";
1539 int     smtp_receive_timeout   = 5*60;
1540 uschar *smtp_receive_timeout_s = NULL;
1541 uschar *smtp_reserve_hosts     = NULL;
1542 int     smtp_rlm_base          = 0;
1543 double  smtp_rlm_factor        = 0.0;
1544 int     smtp_rlm_limit         = 0;
1545 int     smtp_rlm_threshold     = INT_MAX;
1546 int     smtp_rlr_base          = 0;
1547 double  smtp_rlr_factor        = 0.0;
1548 int     smtp_rlr_limit         = 0;
1549 int     smtp_rlr_threshold     = INT_MAX;
1550 #ifdef SUPPORT_I18N
1551 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1552 #endif
1553
1554 #ifdef WITH_CONTENT_SCAN
1555 uschar *spamd_address          = US"127.0.0.1 783";
1556 uschar *spam_bar               = NULL;
1557 uschar *spam_report            = NULL;
1558 uschar *spam_action            = NULL;
1559 uschar *spam_score             = NULL;
1560 uschar *spam_score_int         = NULL;
1561 #endif
1562 #ifdef SUPPORT_SPF
1563 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1564 uschar *spf_header_comment     = NULL;
1565 uschar *spf_received           = NULL;
1566 uschar *spf_result             = NULL;
1567 uschar *spf_smtp_comment       = NULL;
1568 uschar *spf_smtp_comment_template
1569                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1570                                = US"Please%_see%_http://www.open-spf.org/Why";
1571
1572 #endif
1573
1574 FILE   *spool_data_file        = NULL;
1575 uschar *spool_directory        = US SPOOL_DIRECTORY
1576                            "\0<--------------Space to patch spool_directory->";
1577 #ifdef SUPPORT_SRS
1578 uschar *srs_recipient          = NULL;
1579 #endif
1580 int     string_datestamp_offset= -1;
1581 int     string_datestamp_length= 0;
1582 int     string_datestamp_type  = -1;
1583 const uschar *submission_domain = NULL;
1584 const uschar *submission_name  = NULL;
1585 int     syslog_facility        = LOG_MAIL;
1586 const uschar *syslog_processname= US"exim";
1587 uschar *system_filter          = NULL;
1588
1589 uschar *system_filter_directory_transport = NULL;
1590 uschar *system_filter_file_transport = NULL;
1591 uschar *system_filter_pipe_transport = NULL;
1592 uschar *system_filter_reply_transport = NULL;
1593
1594 gid_t   system_filter_gid      = 0;
1595 uid_t   system_filter_uid      = (uid_t)-1;
1596
1597 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1598 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1599 #ifdef USE_TCP_WRAPPERS
1600 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1601 #endif
1602 int     test_harness_load_avg  = 0;
1603 int     thismessage_size_limit = 0;
1604 int     timeout_frozen_after   = 0;
1605 #ifdef MEASURE_TIMING
1606 struct timeval timestamp_startup;
1607 #endif
1608
1609 transport_instance  *transports = NULL;
1610
1611 transport_instance  transport_defaults = {
1612     /* All non-mentioned elements zero/NULL/FALSE */
1613     .batch_max =                1,
1614     .multi_domain =             TRUE,
1615     .max_addresses =            US"100",
1616     .connection_max_messages =  500,
1617     .uid =                      (uid_t)(-1),
1618     .gid =                      (gid_t)(-1),
1619     .filter_timeout =           300,
1620     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1621                                                  1 nor 0 so can detect unset */
1622 };
1623
1624 int     transport_count;
1625 uschar *transport_name          = NULL;
1626 int     transport_newlines;
1627 const uschar **transport_filter_argv  = NULL;
1628 int     transport_filter_timeout;
1629 int     transport_write_timeout= 0;
1630
1631 tree_node  *tree_dns_fails     = NULL;
1632 tree_node  *tree_duplicates    = NULL;
1633 tree_node  *tree_nonrecipients = NULL;
1634 tree_node  *tree_unusable      = NULL;
1635
1636 gid_t  *trusted_groups         = NULL;
1637 uid_t  *trusted_users          = NULL;
1638 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1639
1640 uschar *unknown_login          = NULL;
1641 uschar *unknown_username       = NULL;
1642 uschar *untrusted_set_sender   = NULL;
1643
1644 /*  A regex for matching a "From_" line in an incoming message, in the form
1645
1646     From ph10 Fri Jan  5 12:35 GMT 1996
1647
1648 which  the "mail" commands send to the MTA (undocumented, of course), or in
1649 the  form
1650
1651     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1652
1653 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1654 Because  of variations in time formats, just match up to the minutes. That
1655 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1656 so  just require one digit for hours and minutes. The weekday is also absent
1657 in  some forms. */
1658
1659 uschar *uucp_from_pattern      = US
1660    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1661    "(?:"                                          /* Non-extracting bracket */
1662    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1663    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1664    ")"                                            /* End alternation */
1665    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1666
1667 uschar *uucp_from_sender       = US"$1";
1668
1669 uschar *verify_mode            = NULL;
1670 uschar *version_copyright      =
1671  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1672    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2024";
1673 uschar *version_date           = US"?";
1674 uschar *version_cnumber        = US"????";
1675 uschar *version_string         = US"?";
1676
1677 uschar *warn_message_file      = NULL;
1678 int     warning_count          = 0;
1679 const uschar *warnmsg_delay    = NULL;
1680 const uschar *warnmsg_recipients = NULL;
1681
1682 #ifndef DISABLE_WELLKNOWN
1683 uschar *wellknown_advertise_hosts = NULL;
1684 uschar *wellknown_response     = NULL;
1685 #endif
1686
1687 /*  End of globals.c */
1688 /* vi: aw ai sw=2
1689 */