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, drinst.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     .drinst = {
 636       .next =           NULL,
 637       .name =           NULL,
 638       .info =           NULL,
 639       .options_block =  NULL,
 640       .driver_name =    NULL,
 641     },
 642     .advertise_condition = NULL,
 643     .client_condition = NULL,
 644     .public_name =      NULL,
 645     .set_id =           NULL,
 646     .set_client_id =    NULL,
 647     .mail_auth_condition = NULL,
 648     .server_debug_string = NULL,
 649     .server_condition = NULL,
 650     .client =           FALSE,
 651     .server =           FALSE,
 652     .advertised =       FALSE
 653 };
 654
 655 uschar *auth_defer_msg         = US"reason not recorded";
 656 uschar *auth_defer_user_msg    = US"";
 657 const uschar *auth_vars[AUTH_VARS];
 658 uschar *authenticator_name     = NULL;
 659 int     auto_thaw              = 0;
 660 #ifdef WITH_CONTENT_SCAN
 661 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 662 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 663 #endif
 664
 665 #if BASE_62 == 62
 666 uschar *base62_chars=
 667     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 668 #else
 669 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 670 #endif
 671
 672 uschar *bi_command             = NULL;
 673 uschar *big_buffer             = NULL;
 674 int     big_buffer_size        = BIG_BUFFER_SIZE;
 675 #ifdef EXPERIMENTAL_BRIGHTMAIL
 676 uschar *bmi_alt_location       = NULL;
 677 uschar *bmi_base64_tracker_verdict = NULL;
 678 uschar *bmi_base64_verdict     = NULL;
 679 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 680 int     bmi_deliver            = 1;
 681 int     bmi_run                = 0;
 682 uschar *bmi_verdicts           = NULL;
 683 #endif
 684 int     bsmtp_transaction_linecount = 0;
 685 int     body_8bitmime          = 0;
 686 int     body_linecount         = 0;
 687 int     body_zerocount         = 0;
 688 uschar *bounce_message_file    = NULL;
 689 uschar *bounce_message_text    = NULL;
 690 const uschar *bounce_recipient = NULL;
 691 int     bounce_return_linesize_limit = 998;
 692 int     bounce_return_size_limit = 100*1024;
 693 uschar *bounce_sender_authentication = NULL;
 694
 695 uschar *callout_address        = NULL;
 696 int     callout_cache_domain_positive_expire = 7*24*60*60;
 697 int     callout_cache_domain_negative_expire = 3*60*60;
 698 int     callout_cache_positive_expire = 24*60*60;
 699 int     callout_cache_negative_expire = 2*60*60;
 700 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 701 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 702 int     check_log_inodes       = 100;
 703 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 704 int     check_spool_inodes     = 100;
 705 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 706
 707 uschar *chunking_advertise_hosts = US"*";
 708 unsigned chunking_datasize     = 0;
 709 unsigned chunking_data_left    = 0;
 710 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 711 const pcre2_code *regex_CHUNKING     = NULL;
 712
 713 #ifndef DISABLE_ESMTP_LIMITS
 714 const pcre2_code *regex_LIMITS        = NULL;
 715 #endif
 716
 717 uschar *client_authenticator   = NULL;
 718 uschar *client_authenticated_id = NULL;
 719 uschar *client_authenticated_sender = NULL;
 720 #ifndef DISABLE_CLIENT_CMD_LOG
 721 gstring *client_cmd_log        = NULL;
 722 #endif
 723 int     clmacro_count          = 0;
 724 uschar *clmacros[MAX_CLMACROS];
 725 FILE   *config_file            = NULL;
 726 const uschar *config_filename  = NULL;
 727 int     config_lineno          = 0;
 728 #ifdef CONFIGURE_GROUP
 729 gid_t   config_gid             = CONFIGURE_GROUP;
 730 #else
 731 gid_t   config_gid             = 0;
 732 #endif
 733 const uschar * config_main_filelist = US CONFIGURE_FILE
 734                          "\0<-----------Space to patch configure_filename->";
 735 uschar *config_main_filename   = NULL;
 736 uschar *config_main_directory  = NULL;
 737
 738 #ifdef CONFIGURE_OWNER
 739 uid_t   config_uid             = CONFIGURE_OWNER;
 740 #else
 741 uid_t   config_uid             = 0;
 742 #endif
 743
 744 const uschar *connection_id    = NULL;
 745 int     connection_max_messages= -1;
 746 unsigned continue_flags        = 0;
 747 #ifndef DISABLE_ESMTP_LIMITS
 748 unsigned continue_limit_mail   = 0;
 749 unsigned continue_limit_rcpt   = 0;
 750 unsigned continue_limit_rcptdom= 0;
 751 int     continue_fd            = -1;
 752 uschar *continue_proxy_cipher  = NULL;
 753 BOOL    continue_proxy_dane    = FALSE;
 754 uschar *continue_proxy_sni     = NULL;
 755 const uschar *continue_hostname      = NULL;
 756 const uschar *continue_host_address  = NULL;
 757 uschar  continue_next_id[MESSAGE_ID_LENGTH +1] = {[0]='\0'};
 758 int     continue_sequence      = 1;
 759 const uschar *continue_transport = NULL;
 760 #ifndef COMPILE_UTILITY
 761 open_db *continue_retry_db     = NULL;
 762 open_db *continue_wait_db      = NULL;
 763 #endif
 764 #endif
 765
 766 uschar *csa_status             = NULL;
 767 cut_t   cutthrough = {
 768   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 769   .delivery =           FALSE,                          /* when to attempt */
 770   .defer_pass =         FALSE,                          /* on defer: spool locally */
 771   .is_tls =             FALSE,                          /* not a TLS conn yet */
 772   .cctx =               {.sock = -1},                   /* open connection */
 773   .nrcpt =              0,                              /* number of addresses */
 774 };
 775
 776 int     daemon_notifier_fd     = -1;
 777 uschar *daemon_smtp_port       = US"smtp";
 778 int     daemon_startup_retries = 9;
 779 int     daemon_startup_sleep   = 30;
 780
 781 #ifdef EXPERIMENTAL_DCC
 782 uschar *dcc_header             = NULL;
 783 uschar *dcc_result             = NULL;
 784 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 785 uschar *dccifd_options         = US"header";
 786 #endif
 787
 788 int     debug_fd               = -1;
 789 FILE   *debug_file             = NULL;
 790 int     debug_notall[]         = {
 791   Di_memory,
 792   Di_noutf8,
 793   -1
 794 };
 795 bit_table debug_options[]      = { /* must be in alphabetical order and use
 796                                  only the enum values from macro.h */
 797   BIT_TABLE(D, acl),
 798   BIT_TABLE(D, all),
 799   BIT_TABLE(D, auth),
 800   BIT_TABLE(D, deliver),
 801   BIT_TABLE(D, dns),
 802   BIT_TABLE(D, dnsbl),
 803   BIT_TABLE(D, exec),
 804   BIT_TABLE(D, expand),
 805   BIT_TABLE(D, filter),
 806   BIT_TABLE(D, hints_lookup),
 807   BIT_TABLE(D, host_lookup),
 808   BIT_TABLE(D, ident),
 809   BIT_TABLE(D, interface),
 810   BIT_TABLE(D, lists),
 811   BIT_TABLE(D, load),
 812   BIT_TABLE(D, local_scan),
 813   BIT_TABLE(D, lookup),
 814   BIT_TABLE(D, memory),
 815   BIT_TABLE(D, noutf8),
 816   BIT_TABLE(D, pid),
 817   BIT_TABLE(D, process_info),
 818   BIT_TABLE(D, queue_run),
 819   BIT_TABLE(D, receive),
 820   BIT_TABLE(D, resolver),
 821   BIT_TABLE(D, retry),
 822   BIT_TABLE(D, rewrite),
 823   BIT_TABLE(D, route),
 824   BIT_TABLE(D, timestamp),
 825   BIT_TABLE(D, tls),
 826   BIT_TABLE(D, transport),
 827   BIT_TABLE(D, uid),
 828   BIT_TABLE(D, verify),
 829 };
 830 int      debug_options_count    = nelem(debug_options);
 831 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 832 unsigned debug_pretrigger_bsize = 0;
 833 uschar * debug_pretrigger_buf   = NULL;
 834 unsigned int debug_selector     = 0;
 835
 836 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 837 uschar *delay_warning_condition=
 838   US"${if or {"
 839             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 840             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 841             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 842             "} {no}{yes}}";
 843 uschar *deliver_address_data   = NULL;
 844 int     deliver_datafile       = -1;
 845 const uschar *deliver_domain   = NULL;
 846 uschar *deliver_domain_data    = NULL;
 847 const uschar *deliver_domain_orig = NULL;
 848 const uschar *deliver_domain_parent = NULL;
 849 time_t  deliver_frozen_at      = 0;
 850 uschar *deliver_home           = NULL;
 851 const uschar *deliver_host     = NULL;
 852 const uschar *deliver_host_address = NULL;
 853 int     deliver_host_port      = 0;
 854 uschar *deliver_in_buffer      = NULL;
 855 ino_t   deliver_inode          = 0;
 856 const uschar *deliver_localpart= NULL;
 857 uschar *deliver_localpart_data = NULL;
 858 const uschar *deliver_localpart_orig = NULL;
 859 const uschar *deliver_localpart_parent = NULL;
 860 const uschar *deliver_localpart_prefix = NULL;
 861 const uschar *deliver_localpart_prefix_v = NULL;
 862 const uschar *deliver_localpart_suffix = NULL;
 863 const uschar *deliver_localpart_suffix_v = NULL;
 864 uschar *deliver_out_buffer     = NULL;
 865 int     deliver_queue_load_max = -1;
 866 address_item  *deliver_recipients = NULL;
 867 uschar *deliver_selectstring   = NULL;
 868 uschar *deliver_selectstring_sender = NULL;
 869
 870 #ifndef DISABLE_DKIM
 871 unsigned dkim_collect_input      = 0;
 872 uschar *dkim_cur_signer          = NULL;
 873 int     dkim_key_length          = 0;
 874 void   *dkim_signatures          = NULL;
 875 uschar *dkim_signers             = NULL;
 876 uschar *dkim_signing_domain      = NULL;
 877 uschar *dkim_signing_selector    = NULL;
 878 gstring *dkim_signing_record     = NULL;
 879 uschar *dkim_verify_hashes       = US"sha256:sha512";
 880 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 881 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 882 BOOL    dkim_verify_minimal      = FALSE;
 883 uschar *dkim_verify_overall      = NULL;
 884 uschar *dkim_verify_signers      = US"$dkim_signers";
 885 uschar *dkim_verify_status       = NULL;
 886 uschar *dkim_verify_reason       = NULL;
 887 #endif
 888 #ifdef SUPPORT_DMARC
 889 uschar *dmarc_domain_policy     = NULL;
 890 uschar *dmarc_forensic_sender   = NULL;
 891 uschar *dmarc_history_file      = NULL;
 892 uschar *dmarc_status            = NULL;
 893 uschar *dmarc_status_text       = NULL;
 894 uschar *dmarc_tld_file          = NULL;
 895 uschar *dmarc_used_domain       = NULL;
 896 #endif
 897
 898 uschar *dns_again_means_nonexist = NULL;
 899 int     dns_csa_search_limit   = 5;
 900 int     dns_cname_loops        = 1;
 901 #ifdef SUPPORT_DANE
 902 int     dns_dane_ok            = -1;
 903 #endif
 904 uschar *dns_ipv4_lookup        = NULL;
 905 int     dns_retrans            = 0;
 906 int     dns_retry              = 0;
 907 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 908 uschar *dns_trust_aa           = NULL;
 909 int     dns_use_edns0          = -1; /* <0 = not coerced */
 910 uschar *dnslist_domain         = NULL;
 911 uschar *dnslist_matched        = NULL;
 912 uschar *dnslist_text           = NULL;
 913 uschar *dnslist_value          = NULL;
 914 tree_node *domainlist_anchor   = NULL;
 915 int     domainlist_count       = 0;
 916 const uschar *driver_srcfile   = NULL;
 917 int     driver_srcline         = 0;
 918 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 919 unsigned int dtrigger_selector = 0;
 920
 921 int     errno_quota            = ERRNO_QUOTA;
 922 uschar *errors_copy            = NULL;
 923 int     error_handling         = ERRORS_SENDER;
 924 uschar *errors_reply_to        = NULL;
 925 int     errors_sender_rc       = EXIT_FAILURE;
 926 #ifndef DISABLE_EVENT
 927 uschar *event_action           = NULL;  /* expansion for delivery events */
 928 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 929 int     event_defer_errno      = 0;
 930 const uschar *event_name       = NULL;  /* event name variable */
 931 #endif
 932
 933
 934 gid_t   exim_gid               = EXIM_GID;
 935 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 936                         "\0<---------------Space to patch exim_path->";
 937 uid_t   exim_uid               = EXIM_UID;
 938 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 939 int     expand_forbid          = 0;
 940 int     expand_nlength[EXPAND_MAXN+1];
 941 int     expand_nmax            = -1;
 942 const uschar *expand_nstring[EXPAND_MAXN+1];
 943 uschar *expand_string_message;
 944 uschar *extra_local_interfaces = NULL;
 945
 946 int     fake_response          = OK;
 947 uschar *fake_response_text     = US"Your message has been rejected but is "
 948                                    "being kept for evaluation.\nIf it was a "
 949                                    "legitimate message, it may still be "
 950                                    "delivered to the target recipient(s).";
 951 int     filter_n[FILTER_VARIABLE_COUNT];
 952 int     filter_sn[FILTER_VARIABLE_COUNT];
 953 int     filter_test            = FTEST_NONE;
 954 const uschar * filter_test_sfile = NULL;
 955 const uschar * filter_test_ufile = NULL;
 956 uschar *filter_thisaddress     = NULL;
 957 int     finduser_retries       = 0;
 958 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 959 uschar *freeze_tell            = NULL;
 960 uschar *freeze_tell_config     = NULL;
 961 uschar *fudged_queue_times     = US"";
 962
 963 uschar *gecos_name             = NULL;
 964 uschar *gecos_pattern          = NULL;
 965 rewrite_rule  *global_rewrite_rules = NULL;
 966
 967 volatile sig_atomic_t had_command_timeout = 0;
 968 volatile sig_atomic_t had_command_sigterm = 0;
 969 volatile sig_atomic_t had_data_timeout    = 0;
 970 volatile sig_atomic_t had_data_sigint     = 0;
 971 const uschar *headers_charset  = US HEADERS_CHARSET;
 972 int     header_insert_maxlen   = 64 * 1024;
 973 header_line  *header_last      = NULL;
 974 header_line  *header_list      = NULL;
 975 int     header_maxsize         = HEADER_MAXSIZE;
 976 int     header_line_maxsize    = 0;
 977
 978 header_name header_names[] = {
 979   /* name               len     allow_resent    htype */
 980   { US"bcc",            3,      TRUE,           htype_bcc },
 981   { US"cc",             2,      TRUE,           htype_cc },
 982   { US"date",           4,      TRUE,           htype_date },
 983   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 984   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 985   { US"from",           4,      TRUE,           htype_from },
 986   { US"message-id",    10,      TRUE,           htype_id },
 987   { US"received",       8,      FALSE,          htype_received },
 988   { US"reply-to",       8,      FALSE,          htype_reply_to },
 989   { US"return-path",   11,      FALSE,          htype_return_path },
 990   { US"sender",         6,      TRUE,           htype_sender },
 991   { US"subject",        7,      FALSE,          htype_subject },
 992   { US"to",             2,      TRUE,           htype_to }
 993 };
 994
 995 int header_names_size          = nelem(header_names);
 996
 997 uschar *helo_accept_junk_hosts = NULL;
 998 uschar *helo_allow_chars       = US"";
 999 uschar *helo_lookup_domains    = US"@ : @[]";
1000 uschar *helo_try_verify_hosts  = NULL;
1001 uschar *helo_verify_hosts      = NULL;
1002 const uschar *hex_digits       = CUS"0123456789abcdef";
1003 uschar *hold_domains           = NULL;
1004 uschar *host_data              = NULL;
1005 uschar *host_lookup            = NULL;
1006 uschar *host_lookup_order      = US"bydns:byaddr";
1007 uschar *host_lookup_msg        = US"";
1008 int     host_number            = 0;
1009 uschar *host_number_string     = NULL;
1010 uschar *host_reject_connection = NULL;
1011 uschar *hosts_connection_nolog = NULL;
1012 #ifdef SUPPORT_PROXY
1013 uschar *hosts_proxy            = NULL;
1014 #endif
1015 uschar *hosts_treat_as_local   = NULL;
1016 uschar *hosts_require_helo     = US"*";
1017 #ifdef EXPERIMENTAL_XCLIENT
1018 uschar *hosts_xclient          = NULL;
1019 #endif
1020 tree_node *hostlist_anchor     = NULL;
1021 int     hostlist_count         = 0;
1022
1023
1024 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1025 uschar *ignore_fromline_hosts  = NULL;
1026 int     inetd_wait_timeout     = -1;
1027 uschar *initial_cwd            = NULL;
1028 uschar *interface_address      = NULL;
1029 int     interface_port         = -1;
1030 uschar *iterate_item           = NULL;
1031
1032 int     journal_fd             = -1;
1033
1034 uschar *keep_environment       = NULL;
1035
1036 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1037
1038 uschar *eldap_dn               = NULL;
1039 const uschar *letter_digit_hyphen_dot =
1040     US"abcdefghijklmnopqrstuvwxyz"
1041       ".-0123456789"
1042       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1043 #ifndef DISABLE_ESMTP_LIMITS
1044 uschar *limits_advertise_hosts = US"*";
1045 #endif
1046 int     load_average           = -2;
1047 uschar *local_from_prefix      = NULL;
1048 uschar *local_from_suffix      = NULL;
1049
1050 #if HAVE_IPV6
1051 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1052 #else
1053 uschar *local_interfaces       = US"0.0.0.0";
1054 #endif
1055
1056 #ifdef HAVE_LOCAL_SCAN
1057 uschar *local_scan_data        = NULL;
1058 int     local_scan_timeout     = 5*60;
1059 #endif
1060 gid_t   local_user_gid         = (gid_t)(-1);
1061 uid_t   local_user_uid         = (uid_t)(-1);
1062
1063 tree_node *localpartlist_anchor= NULL;
1064 int     localpartlist_count    = 0;
1065 uschar *log_buffer             = NULL;
1066
1067 int     log_default[]          = { /* for initializing log_selector */
1068   Li_acl_warn_skipped,
1069   Li_connection_reject,
1070   Li_delay_delivery,
1071   Li_dkim,
1072   Li_dnslist_defer,
1073   Li_etrn,
1074   Li_host_lookup_failed,
1075   Li_lost_incoming_connection,
1076   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1077   Li_msg_id,
1078   Li_queue_run,
1079   Li_queue_time_exclusive,
1080   Li_rejected_header,
1081   Li_retry_defer,
1082   Li_sender_verify_fail,
1083   Li_size_reject,
1084   Li_skip_delivery,
1085   Li_smtp_confirmation,
1086   Li_tls_certificate_verified,
1087   Li_tls_cipher,
1088   -1
1089 };
1090
1091 uschar *log_file_path          = US LOG_FILE_PATH
1092                            "\0<--------------Space to patch log_file_path->";
1093
1094 int     log_notall[]           = {
1095   -1
1096 };
1097 bit_table log_options[]        = { /* must be in alphabetical order,
1098                                 with definitions from enum logbit. */
1099   BIT_TABLE(L, 8bitmime),
1100   BIT_TABLE(L, acl_warn_skipped),
1101   BIT_TABLE(L, address_rewrite),
1102   BIT_TABLE(L, all),
1103   BIT_TABLE(L, all_parents),
1104   BIT_TABLE(L, arguments),
1105   BIT_TABLE(L, connection_id),
1106   BIT_TABLE(L, connection_reject),
1107   BIT_TABLE(L, delay_delivery),
1108   BIT_TABLE(L, deliver_time),
1109   BIT_TABLE(L, delivery_size),
1110 #ifndef DISABLE_DKIM
1111   BIT_TABLE(L, dkim),
1112   BIT_TABLE(L, dkim_verbose),
1113 #endif
1114   BIT_TABLE(L, dnslist_defer),
1115   BIT_TABLE(L, dnssec),
1116   BIT_TABLE(L, etrn),
1117   BIT_TABLE(L, host_lookup_failed),
1118   BIT_TABLE(L, ident_timeout),
1119   BIT_TABLE(L, incoming_interface),
1120   BIT_TABLE(L, incoming_port),
1121   BIT_TABLE(L, lost_incoming_connection),
1122   BIT_TABLE(L, millisec),
1123   BIT_TABLE(L, msg_id),
1124   BIT_TABLE(L, msg_id_created),
1125   BIT_TABLE(L, outgoing_interface),
1126   BIT_TABLE(L, outgoing_port),
1127   BIT_TABLE(L, pid),
1128   BIT_TABLE(L, pipelining),
1129   BIT_TABLE(L, protocol_detail),
1130 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1131   BIT_TABLE(L, proxy),
1132 #endif
1133   BIT_TABLE(L, queue_run),
1134   BIT_TABLE(L, queue_time),
1135   BIT_TABLE(L, queue_time_exclusive),
1136   BIT_TABLE(L, queue_time_overall),
1137   BIT_TABLE(L, receive_time),
1138   BIT_TABLE(L, received_recipients),
1139   BIT_TABLE(L, received_sender),
1140   BIT_TABLE(L, rejected_header),
1141   { US"rejected_headers", Li_rejected_header },
1142   BIT_TABLE(L, retry_defer),
1143   BIT_TABLE(L, return_path_on_delivery),
1144   BIT_TABLE(L, sender_on_delivery),
1145   BIT_TABLE(L, sender_verify_fail),
1146   BIT_TABLE(L, size_reject),
1147   BIT_TABLE(L, skip_delivery),
1148   BIT_TABLE(L, smtp_confirmation),
1149   BIT_TABLE(L, smtp_connection),
1150   BIT_TABLE(L, smtp_incomplete_transaction),
1151   BIT_TABLE(L, smtp_mailauth),
1152   BIT_TABLE(L, smtp_no_mail),
1153   BIT_TABLE(L, smtp_protocol_error),
1154   BIT_TABLE(L, smtp_syntax_error),
1155   BIT_TABLE(L, subject),
1156   BIT_TABLE(L, tls_certificate_verified),
1157   BIT_TABLE(L, tls_cipher),
1158   BIT_TABLE(L, tls_peerdn),
1159   BIT_TABLE(L, tls_resumption),
1160   BIT_TABLE(L, tls_sni),
1161   BIT_TABLE(L, unknown_in_list),
1162 };
1163 int     log_options_count      = nelem(log_options);
1164
1165 int     log_reject_target      = 0;
1166 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1167 uschar *log_selector_string    = NULL;
1168 FILE   *log_stderr             = NULL;
1169 uschar *login_sender_address   = NULL;
1170 uschar *lookup_dnssec_authenticated = NULL;
1171 int     lookup_open_max        = 25;
1172 uschar *lookup_value           = NULL;
1173
1174 macro_item *macros_user        = NULL;
1175 uschar *mailstore_basename     = NULL;
1176 #ifdef WITH_CONTENT_SCAN
1177 uschar *malware_name           = NULL;  /* Virus Name */
1178 #endif
1179 int     max_received_linelength= 0;
1180 int     max_username_length    = 0;
1181 int     message_age            = 0;
1182 uschar *message_body           = NULL;
1183 uschar *message_body_end       = NULL;
1184 int     message_body_size      = 0;
1185 int     message_body_visible   = 500;
1186 int     message_ended          = END_NOTSTARTED;
1187 uschar *message_headers        = NULL;
1188 uschar *message_id;
1189 uschar *message_id_domain      = NULL;
1190 uschar *message_id_text        = NULL;
1191 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1192 uschar *message_id_external;
1193 int     message_linecount      = 0;
1194 int     message_size           = 0;
1195 uschar *message_size_limit     = US"50M";
1196 #ifdef SUPPORT_I18N
1197 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1198 #endif
1199 uschar  message_subdir[2]      = { 0, 0 };
1200 const uschar *message_reference= NULL;
1201
1202 /* MIME ACL expandables */
1203 #ifdef WITH_CONTENT_SCAN
1204 int     mime_anomaly_level     = 0;
1205 const uschar *mime_anomaly_text      = NULL;
1206 uschar *mime_boundary          = NULL;
1207 uschar *mime_charset           = NULL;
1208 uschar *mime_content_description = NULL;
1209 uschar *mime_content_disposition = NULL;
1210 uschar *mime_content_id        = NULL;
1211 unsigned int mime_content_size = 0;
1212 uschar *mime_content_transfer_encoding = NULL;
1213 uschar *mime_content_type      = NULL;
1214 uschar *mime_decoded_filename  = NULL;
1215 uschar *mime_filename          = NULL;
1216 int     mime_is_multipart      = 0;
1217 int     mime_is_coverletter    = 0;
1218 int     mime_is_rfc822         = 0;
1219 int     mime_part_count        = -1;
1220 #endif
1221
1222 uid_t  *never_users            = NULL;
1223 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1224
1225 const int on                   = 1;     /* for setsockopt */
1226 const int off                  = 0;
1227
1228 uid_t   original_euid;
1229 gid_t   originator_gid;
1230 uschar *originator_login       = NULL;
1231 uschar *originator_name        = NULL;
1232 uid_t   originator_uid;
1233 uschar *override_local_interfaces = NULL;
1234 const uschar *override_pid_file_path = NULL;
1235
1236 BOOL    panic_coredump         = FALSE;
1237 pcre2_general_context * pcre_gen_ctx = NULL;
1238 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1239 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1240 pcre2_general_context * pcre_mlc_ctx = NULL;
1241 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1242
1243 uschar *percent_hack_domains   = NULL;
1244 const uschar *pid_file_path    = US PID_FILE_PATH
1245                            "\0<--------------Space to patch pid_file_path->";
1246 #ifndef DISABLE_PIPE_CONNECT
1247 uschar *pipe_connect_advertise_hosts = US"*";
1248 #endif
1249 uschar *pipelining_advertise_hosts = US"*";
1250 uschar *primary_hostname       = NULL;
1251 uschar *process_info;
1252 int     process_info_len       = 0;
1253 uschar *process_log_path       = NULL;
1254 const uschar *process_purpose  = US"fresh-exec";
1255
1256 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1257 uschar *proxy_external_address = NULL;
1258 int     proxy_external_port    = 0;
1259 uschar *proxy_local_address    = NULL;
1260 int     proxy_local_port       = 0;
1261 int     proxy_protocol_timeout = 3;
1262 #endif
1263
1264 uschar *prvscheck_address      = NULL;
1265 uschar *prvscheck_keynum       = NULL;
1266 uschar *prvscheck_result       = NULL;
1267
1268
1269 qrunner *qrunners              = NULL;
1270
1271 const uschar *qualify_domain_recipient = NULL;
1272 uschar *qualify_domain_sender  = NULL;
1273 uschar *queue_domains          = NULL;
1274 int     queue_interval         = -1;
1275 uschar *queue_name             = US"";
1276 uschar *queue_name_dest        = NULL;
1277 uschar *queue_only_file        = NULL;
1278 int     queue_only_load        = -1;
1279 uschar *queue_run_max          = US"5";
1280 pid_t   queue_run_pid          = (pid_t)0;
1281 int     queue_run_pipe         = -1;
1282 unsigned queue_size            = 0;
1283 time_t  queue_size_next        = 0;
1284 uschar *queue_smtp_domains     = NULL;
1285
1286 uint32_t random_seed           = 0;
1287 tree_node *ratelimiters_cmd    = NULL;
1288 tree_node *ratelimiters_conn   = NULL;
1289 tree_node *ratelimiters_mail   = NULL;
1290 uschar *raw_active_hostname    = NULL;
1291 const uschar *raw_sender       = NULL;
1292 const uschar **raw_recipients  = NULL;
1293 int     raw_recipients_count   = 0;
1294
1295 int     rcpt_count             = 0;
1296 int     rcpt_fail_count        = 0;
1297 int     rcpt_defer_count       = 0;
1298 gid_t   real_gid;
1299 uid_t   real_uid;
1300 int     receive_linecount      = 0;
1301 int     receive_messagecount   = 0;
1302 int     receive_timeout        = 0;
1303 int     received_count         = 0;
1304 const uschar *received_for     = NULL;
1305
1306 /*  This is the default text for Received headers generated by Exim. The
1307 date  will be automatically added on the end. */
1308
1309 uschar *received_header_text   = US
1310      "Received: "
1311      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1312        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1313          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1314      "by $primary_hostname "
1315      "${if def:received_protocol {with $received_protocol }}"
1316 #ifndef DISABLE_TLS
1317      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1318      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1319 #endif
1320      "(Exim $version_number)\n\t"
1321      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1322      "id $message_exim_id"
1323      "${if def:received_for {\n\tfor $received_for}}"
1324      "\0<---------------Space to patch received_header_text->";
1325
1326 int     received_headers_max   = 30;
1327 uschar *received_protocol      = NULL;
1328 struct timeval received_time   = { 0, 0 };
1329 struct timeval received_time_complete = { 0, 0 };
1330 uschar *recipient_data         = NULL;
1331 uschar *recipient_unqualified_hosts = NULL;
1332 uschar *recipient_verify_failure = NULL;
1333 int     recipients_count       = 0;
1334 recipient_item  *recipients_list = NULL;
1335 int     recipients_list_max    = 0;
1336 uschar *recipients_max         = US"50000";
1337 int     recipients_max_expanded= 0;
1338 const pcre2_code *regex_AUTH         = NULL;
1339 const pcre2_code *regex_check_dns_names = NULL;
1340 const pcre2_code *regex_From         = NULL;
1341 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1342 const pcre2_code *regex_PIPELINING   = NULL;
1343 const pcre2_code *regex_SIZE         = NULL;
1344 #ifndef DISABLE_PIPE_CONNECT
1345 const pcre2_code *regex_EARLY_PIPE   = NULL;
1346 #endif
1347 int    regex_cachesize               = 0;
1348 const pcre2_code *regex_ismsgid      = NULL;
1349 const pcre2_code *regex_smtp_code    = NULL;
1350 const uschar *regex_vars[REGEX_VARS] = { NULL };
1351 #ifdef WHITELIST_D_MACROS
1352 const pcre2_code *regex_whitelisted_macro = NULL;
1353 #endif
1354 #ifdef WITH_CONTENT_SCAN
1355 uschar *regex_match_string     = NULL;
1356 #endif
1357 int     remote_delivery_count  = 0;
1358 int     remote_max_parallel    = 4;
1359 uschar *remote_sort_domains    = NULL;
1360 int     retry_data_expire      = 7*24*60*60;
1361 int     retry_interval_max     = 24*60*60;
1362 int     retry_maximum_timeout  = 0;        /* set from retry config */
1363 retry_config  *retries         = NULL;
1364 const uschar *return_path            = NULL;
1365 int     rewrite_existflags     = 0;
1366 uschar *rfc1413_hosts          = US"@[]";
1367 int     rfc1413_query_timeout  = 0;
1368 uid_t   root_gid               = ROOT_GID;
1369 uid_t   root_uid               = ROOT_UID;
1370
1371 router_instance  *routers  = NULL;
1372
1373 /* All elements not mentioned will be 0/NULL/FALSE */
1374 router_instance  router_defaults = {
1375     .self =                     US"freeze",
1376
1377     .address_test =             TRUE,
1378     .expn =                     TRUE,
1379     .log_as_local =             TRUE_UNSET,
1380     .more =                     TRUE,
1381     .repeat_use =               TRUE,
1382     .retry_use_local_part =     TRUE_UNSET,
1383     .verify_recipient =         TRUE,
1384     .verify_sender =            TRUE,
1385
1386     .self_code =                self_freeze,
1387     .uid =                      (uid_t)(-1),
1388     .gid =                      (gid_t)(-1),
1389
1390     .dnssec =                   { .request= US"*", .require=NULL },
1391 };
1392
1393 const uschar *router_name      = NULL;
1394 tree_node *router_var          = NULL;
1395
1396 ip_address_item *running_interfaces = NULL;
1397
1398 /* This is a weird one. The following string gets patched in the binary by the
1399 script that sets up a copy of Exim for running in the test harness. It seems
1400 that compilers are now clever, and share constant strings if they can.
1401 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1402 make use of the end of this string in order to save space. So the patching then
1403 wrecks this. We defeat this optimization by adding some additional characters
1404 onto the end of the string. */
1405
1406 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1407
1408 int     runrc                  = 0;
1409
1410 uschar *search_error_message   = NULL;
1411 uschar *self_hostname          = NULL;
1412 const uschar *sender_address   = NULL;
1413 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1414 uschar *sender_address_data    = NULL;
1415 const uschar *sender_address_unrewritten = NULL;
1416 uschar *sender_data            = NULL;
1417 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1418 uschar *sender_fullhost        = NULL;
1419 uschar *sender_helo_name       = NULL;
1420 uschar **sender_host_aliases   = &no_aliases;
1421 uschar *sender_host_address    = NULL;
1422 uschar *sender_host_authenticated = NULL;
1423 uschar *sender_host_auth_pubname  = NULL;
1424 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1425 uschar *sender_host_name       = NULL;
1426 int     sender_host_port       = 0;
1427 uschar *sender_ident           = NULL;
1428 uschar *sender_rate            = NULL;
1429 uschar *sender_rate_limit      = NULL;
1430 uschar *sender_rate_period     = NULL;
1431 uschar *sender_rcvhost         = NULL;
1432 uschar *sender_unqualified_hosts = NULL;
1433 uschar *sender_verify_failure = NULL;
1434 address_item *sender_verified_list  = NULL;
1435 address_item *sender_verified_failed = NULL;
1436 int     sender_verified_rc     = -1;
1437 uschar *sending_ip_address     = NULL;
1438 int     sending_port           = -1;
1439 SIGNAL_BOOL sigalrm_seen       = FALSE;
1440 const uschar *sigalarm_setter  = NULL;
1441 const uschar **sighup_argv     = NULL;
1442 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1443 int     smtp_accept_count      = 0;
1444 int     smtp_accept_max        = 20;
1445 int     smtp_accept_max_nonmail= 10;
1446 uschar *smtp_accept_max_nonmail_hosts = US"*";
1447 uschar *smtp_accept_max_per_connection = US"1000";
1448 uschar *smtp_accept_max_per_host = NULL;
1449 int     smtp_accept_queue      = 0;
1450 int     smtp_accept_queue_per_connection = 10;
1451 int     smtp_accept_reserve    = 0;
1452 uschar *smtp_active_hostname   = NULL;
1453 int     smtp_backlog_monitor   = 0;
1454 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1455                              "Exim $version_number $tod_full"
1456                              "\0<---------------Space to patch smtp_banner->";
1457 int     smtp_ch_index          = 0;
1458 uschar *smtp_cmd_argument      = NULL;
1459 uschar *smtp_cmd_buffer        = NULL;
1460 struct timeval smtp_connection_start  = {0,0};
1461 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1462 int     smtp_connect_backlog   = 20;
1463 double  smtp_delay_mail        = 0.0;
1464 double  smtp_delay_rcpt        = 0.0;
1465 FILE   *smtp_in                = NULL;
1466 int     smtp_listen_backlog    = 0;
1467 int     smtp_load_reserve      = -1;
1468 int     smtp_mailcmd_count     = 0;
1469 int     smtp_mailcmd_max       = -1;
1470 FILE   *smtp_out               = NULL;
1471 uschar *smtp_etrn_command      = NULL;
1472 int     smtp_max_synprot_errors= 3;
1473 int     smtp_max_unknown_commands = 3;
1474 uschar *smtp_notquit_reason    = NULL;
1475 unsigned smtp_peer_options     = 0;
1476 unsigned smtp_peer_options_wrap= 0;
1477 uschar *smtp_ratelimit_hosts   = NULL;
1478 uschar *smtp_ratelimit_mail    = NULL;
1479 uschar *smtp_ratelimit_rcpt    = NULL;
1480 uschar *smtp_read_error        = US"";
1481 int     smtp_receive_timeout   = 5*60;
1482 uschar *smtp_receive_timeout_s = NULL;
1483 uschar *smtp_reserve_hosts     = NULL;
1484 int     smtp_rlm_base          = 0;
1485 double  smtp_rlm_factor        = 0.0;
1486 int     smtp_rlm_limit         = 0;
1487 int     smtp_rlm_threshold     = INT_MAX;
1488 int     smtp_rlr_base          = 0;
1489 double  smtp_rlr_factor        = 0.0;
1490 int     smtp_rlr_limit         = 0;
1491 int     smtp_rlr_threshold     = INT_MAX;
1492 #ifdef SUPPORT_I18N
1493 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1494 #endif
1495
1496 #ifdef WITH_CONTENT_SCAN
1497 uschar *spamd_address          = US"127.0.0.1 783";
1498 uschar *spam_bar               = NULL;
1499 uschar *spam_report            = NULL;
1500 uschar *spam_action            = NULL;
1501 uschar *spam_score             = NULL;
1502 uschar *spam_score_int         = NULL;
1503 #endif
1504 #ifdef SUPPORT_SPF
1505 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1506 uschar *spf_header_comment     = NULL;
1507 uschar *spf_received           = NULL;
1508 uschar *spf_result             = NULL;
1509 uschar *spf_smtp_comment       = NULL;
1510 uschar *spf_smtp_comment_template
1511                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1512                                = US"Please%_see%_http://www.open-spf.org/Why";
1513
1514 #endif
1515
1516 FILE   *spool_data_file        = NULL;
1517 uschar *spool_directory        = US SPOOL_DIRECTORY
1518                            "\0<--------------Space to patch spool_directory->";
1519 #ifdef SUPPORT_SRS
1520 uschar *srs_recipient          = NULL;
1521 #endif
1522 int     string_datestamp_offset= -1;
1523 int     string_datestamp_length= 0;
1524 int     string_datestamp_type  = -1;
1525 const uschar *submission_domain = NULL;
1526 const uschar *submission_name  = NULL;
1527 int     syslog_facility        = LOG_MAIL;
1528 const uschar *syslog_processname= US"exim";
1529 uschar *system_filter          = NULL;
1530
1531 uschar *system_filter_directory_transport = NULL;
1532 uschar *system_filter_file_transport = NULL;
1533 uschar *system_filter_pipe_transport = NULL;
1534 uschar *system_filter_reply_transport = NULL;
1535
1536 gid_t   system_filter_gid      = 0;
1537 uid_t   system_filter_uid      = (uid_t)-1;
1538
1539 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1540 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1541 #ifdef USE_TCP_WRAPPERS
1542 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1543 #endif
1544 int     test_harness_load_avg  = 0;
1545 int     thismessage_size_limit = 0;
1546 int     timeout_frozen_after   = 0;
1547 #ifdef MEASURE_TIMING
1548 struct timeval timestamp_startup;
1549 #endif
1550
1551 transport_instance  *transports = NULL;
1552
1553 transport_instance  transport_defaults = {
1554     /* All non-mentioned elements zero/NULL/FALSE */
1555     .batch_max =                1,
1556     .multi_domain =             TRUE,
1557     .max_addresses =            US"100",
1558     .connection_max_messages =  500,
1559     .uid =                      (uid_t)(-1),
1560     .gid =                      (gid_t)(-1),
1561     .filter_timeout =           300,
1562     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1563                                                  1 nor 0 so can detect unset */
1564 };
1565
1566 int     transport_count;
1567 const uschar *transport_name          = NULL;
1568 int     transport_newlines;
1569 const uschar **transport_filter_argv  = NULL;
1570 int     transport_filter_timeout;
1571 int     transport_write_timeout= 0;
1572
1573 tree_node  *tree_dns_fails     = NULL;
1574 tree_node  *tree_duplicates    = NULL;
1575 tree_node  *tree_nonrecipients = NULL;
1576 tree_node  *tree_unusable      = NULL;
1577
1578 gid_t  *trusted_groups         = NULL;
1579 uid_t  *trusted_users          = NULL;
1580 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1581
1582 uschar *unknown_login          = NULL;
1583 uschar *unknown_username       = NULL;
1584 uschar *untrusted_set_sender   = NULL;
1585
1586 /*  A regex for matching a "From_" line in an incoming message, in the form
1587
1588     From ph10 Fri Jan  5 12:35 GMT 1996
1589
1590 which  the "mail" commands send to the MTA (undocumented, of course), or in
1591 the  form
1592
1593     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1594
1595 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1596 Because  of variations in time formats, just match up to the minutes. That
1597 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1598 so  just require one digit for hours and minutes. The weekday is also absent
1599 in  some forms. */
1600
1601 uschar *uucp_from_pattern      = US
1602    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1603    "(?:"                                          /* Non-extracting bracket */
1604    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1605    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1606    ")"                                            /* End alternation */
1607    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1608
1609 uschar *uucp_from_sender       = US"$1";
1610
1611 uschar *verify_mode            = NULL;
1612 uschar *version_copyright      =
1613  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1614    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2024";
1615 uschar *version_date           = US"?";
1616 uschar *version_cnumber        = US"????";
1617 uschar *version_string         = US"?";
1618
1619 uschar *warn_message_file      = NULL;
1620 int     warning_count          = 0;
1621 const uschar *warnmsg_delay    = NULL;
1622 const uschar *warnmsg_recipients = NULL;
1623
1624 #ifndef DISABLE_WELLKNOWN
1625 uschar *wellknown_advertise_hosts = NULL;
1626 uschar *wellknown_response     = NULL;
1627 #endif
1628
1629 /*  End of globals.c */
1630 /* vi: aw ai sw=2
1631 */