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 BOOL    split_spool_directory  = FALSE;
 415 BOOL    spool_wireformat       = FALSE;
 416 BOOL    strict_acl_vars        = FALSE;
 417 BOOL    strip_excess_angle_brackets = FALSE;
 418 BOOL    strip_trailing_dot     = FALSE;
 419 BOOL    syslog_duplication     = TRUE;
 420 BOOL    syslog_pid             = TRUE;
 421 BOOL    syslog_timestamp       = TRUE;
 422 BOOL    system_filter_gid_set  = FALSE;
 423 BOOL    system_filter_uid_set  = FALSE;
 424
 425 BOOL    tcp_nodelay            = TRUE;
 426 BOOL    write_rejectlog        = TRUE;
 427
 428 /******************************************************************************/
 429
 430 header_line *acl_added_headers = NULL;
 431 tree_node *acl_anchor          = NULL;
 432 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 433                                   NULL, NULL, NULL, NULL};
 434 int     acl_narg               = 0;
 435
 436 int     acl_level              = 0;
 437
 438 uschar *acl_not_smtp           = NULL;
 439 #ifdef WITH_CONTENT_SCAN
 440 uschar *acl_not_smtp_mime      = NULL;
 441 #endif
 442 uschar *acl_not_smtp_start     = NULL;
 443 uschar *acl_removed_headers    = NULL;
 444 uschar *acl_smtp_auth          = NULL;
 445 uschar *acl_smtp_connect       = NULL;
 446 uschar *acl_smtp_data          = NULL;
 447 #ifndef DISABLE_PRDR
 448 uschar *acl_smtp_data_prdr     = US"accept";
 449 #endif
 450 #ifndef DISABLE_DKIM
 451 uschar *acl_smtp_dkim          = NULL;
 452 #endif
 453 uschar *acl_smtp_etrn          = NULL;
 454 uschar *acl_smtp_expn          = NULL;
 455 uschar *acl_smtp_helo          = NULL;
 456 uschar *acl_smtp_mail          = NULL;
 457 uschar *acl_smtp_mailauth      = NULL;
 458 #ifdef WITH_CONTENT_SCAN
 459 uschar *acl_smtp_mime          = NULL;
 460 #endif
 461 uschar *acl_smtp_notquit       = NULL;
 462 uschar *acl_smtp_predata       = NULL;
 463 uschar *acl_smtp_quit          = NULL;
 464 uschar *acl_smtp_rcpt          = NULL;
 465 uschar *acl_smtp_starttls      = NULL;
 466 uschar *acl_smtp_vrfy          = NULL;
 467 #ifndef DISABLE_WELLKNOWN
 468 uschar *acl_smtp_wellknown     = NULL;
 469 #endif
 470
 471 tree_node *acl_var_c           = NULL;
 472 tree_node *acl_var_m           = NULL;
 473 uschar *acl_verify_message     = NULL;
 474 string_item *acl_warn_logged   = NULL;
 475
 476 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 477 error codes (only those used) */
 478
 479 uschar *acl_wherenames[]       = { [ACL_WHERE_RCPT] =           US"RCPT",
 480                                    [ACL_WHERE_MAIL] =           US"MAIL",
 481                                    [ACL_WHERE_PREDATA] =        US"PREDATA",
 482                                    [ACL_WHERE_MIME] =           US"MIME",
 483                                    [ACL_WHERE_DKIM] =           US"DKIM",
 484                                    [ACL_WHERE_DATA] =           US"DATA",
 485 #ifndef DISABLE_PRDR
 486                                    [ACL_WHERE_PRDR] =           US"PRDR",
 487 #endif
 488                                    [ACL_WHERE_NOTSMTP] =        US"non-SMTP",
 489                                    [ACL_WHERE_AUTH] =           US"AUTH",
 490                                    [ACL_WHERE_CONNECT] =        US"connection",
 491                                    [ACL_WHERE_ETRN] =           US"ETRN",
 492                                    [ACL_WHERE_EXPN] =           US"EXPN",
 493                                    [ACL_WHERE_HELO] =           US"EHLO or HELO",
 494                                    [ACL_WHERE_MAILAUTH] =       US"MAILAUTH",
 495                                    [ACL_WHERE_NOTSMTP_START] =  US"non-SMTP-start",
 496                                    [ACL_WHERE_NOTQUIT] =        US"NOTQUIT",
 497                                    [ACL_WHERE_QUIT] =           US"QUIT",
 498                                    [ACL_WHERE_STARTTLS] =       US"STARTTLS",
 499                                    [ACL_WHERE_VRFY] =           US"VRFY",
 500 #ifndef DISABLE_WELLKNOWN
 501                                    [ACL_WHERE_WELLKNOWN] =      US"WELLKNOWN",
 502 #endif
 503                                    [ACL_WHERE_DELIVERY] =       US"delivery",
 504                                    [ACL_WHERE_UNKNOWN] =        US"unknown"
 505                                  };
 506
 507 uschar *acl_wherecodes[]       = { [ACL_WHERE_RCPT] =   US"550",
 508                                    [ACL_WHERE_MAIL] =   US"550",
 509                                    [ACL_WHERE_PREDATA] = US"550",
 510                                    [ACL_WHERE_MIME] =   US"550",
 511                                    [ACL_WHERE_DKIM] =   US"550",
 512                                    [ACL_WHERE_DATA] =   US"550",
 513 #ifndef DISABLE_PRDR
 514                                    [ACL_WHERE_PRDR] =   US"550",
 515 #endif
 516                                    [ACL_WHERE_AUTH] =   US"503",
 517                                    [ACL_WHERE_CONNECT] = US"550",
 518                                    [ACL_WHERE_ETRN] =   US"458",
 519                                    [ACL_WHERE_EXPN] =   US"550",
 520                                    [ACL_WHERE_HELO] =   US"550",
 521                                    [ACL_WHERE_STARTTLS] = US"550",
 522 #ifndef DISABLE_WELLKNOWN
 523                                    [ACL_WHERE_WELLKNOWN] =US"550",
 524 #endif
 525                                    [ACL_WHERE_VRFY] =   US"252",
 526                                  };
 527
 528 uschar *add_environment        = NULL;
 529 address_item  *addr_duplicate  = NULL;
 530
 531 address_item address_defaults = {
 532   .next =               NULL,
 533   .parent =             NULL,
 534   .first =              NULL,
 535   .dupof =              NULL,
 536   .start_router =       NULL,
 537   .router =             NULL,
 538   .transport =          NULL,
 539   .host_list =          NULL,
 540   .host_used =          NULL,
 541   .fallback_hosts =     NULL,
 542   .reply =              NULL,
 543   .retries =            NULL,
 544   .address =            NULL,
 545   .unique =             NULL,
 546   .cc_local_part =      NULL,
 547   .lc_local_part =      NULL,
 548   .local_part =         NULL,
 549   .prefix =             NULL,
 550   .prefix_v =           NULL,
 551   .suffix =             NULL,
 552   .suffix_v =           NULL,
 553   .domain =             NULL,
 554   .address_retry_key =  NULL,
 555   .domain_retry_key =   NULL,
 556   .current_dir =        NULL,
 557   .home_dir =           NULL,
 558   .message =            NULL,
 559   .user_message =       NULL,
 560   .onetime_parent =     NULL,
 561   .pipe_expandn =       NULL,
 562   .return_filename =    NULL,
 563   .self_hostname =      NULL,
 564   .shadow_message =     NULL,
 565 #ifndef DISABLE_TLS
 566   .cipher =             NULL,
 567   .ourcert =            NULL,
 568   .peercert =           NULL,
 569   .peerdn =             NULL,
 570   .ocsp =               OCSP_NOT_REQ,
 571 #endif
 572 #ifdef EXPERIMENTAL_DSN_INFO
 573   .smtp_greeting =      NULL,
 574   .helo_response =      NULL,
 575 #endif
 576   .authenticator =      NULL,
 577   .auth_id =            NULL,
 578   .auth_sndr =          NULL,
 579   .dsn_orcpt =          NULL,
 580   .dsn_flags =          0,
 581   .dsn_aware =          0,
 582   .uid =                (uid_t)(-1),
 583   .gid =                (gid_t)(-1),
 584   .flags =              { 0 },
 585   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 586   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 587   .mode =               -1,
 588   .more_errno =         0,
 589   .delivery_time =      {.tv_sec = 0, .tv_usec = 0},
 590   .basic_errno =        ERRNO_UNKNOWNERROR,
 591   .child_count =        0,
 592   .return_file =        -1,
 593   .special_action =     SPECIAL_NONE,
 594   .transport_return =   DEFER,
 595   .prop = {                                     /* fields that are propagated to children */
 596     .address_data =     NULL,
 597     .domain_data =      NULL,
 598     .localpart_data =   NULL,
 599     .errors_address =   NULL,
 600     .extra_headers =    NULL,
 601     .remove_headers =   NULL,
 602     .variables =        NULL,
 603     .ignore_error =     FALSE,
 604 #ifdef SUPPORT_I18N
 605     .utf8_msg =         FALSE,
 606     .utf8_downcvt =     FALSE,
 607     .utf8_downcvt_maybe = FALSE
 608 #endif
 609   }
 610 };
 611
 612 const uschar *address_file           = NULL;
 613 const uschar *address_pipe           = NULL;
 614 tree_node *addresslist_anchor  = NULL;
 615 int     addresslist_count      = 0;
 616 gid_t  *admin_groups           = NULL;
 617
 618 uschar *authenticated_fail_id  = NULL;
 619 uschar *authenticated_id       = NULL;
 620 uschar *authenticated_sender   = NULL;
 621 auth_instance  *auths          = NULL;
 622 uschar *auth_advertise_hosts   = US"*";
 623 auth_instance auth_defaults    = {
 624     .drinst = {
 625       .next =           NULL,
 626       .name =           NULL,
 627       .info =           NULL,
 628       .options_block =  NULL,
 629       .driver_name =    NULL,
 630     },
 631     .advertise_condition = NULL,
 632     .client_condition = NULL,
 633     .public_name =      NULL,
 634     .set_id =           NULL,
 635     .set_client_id =    NULL,
 636     .mail_auth_condition = NULL,
 637     .server_debug_string = NULL,
 638     .server_condition = NULL,
 639     .client =           FALSE,
 640     .server =           FALSE,
 641     .advertised =       FALSE
 642 };
 643
 644 uschar *auth_defer_msg         = US"reason not recorded";
 645 uschar *auth_defer_user_msg    = US"";
 646 const uschar *auth_vars[AUTH_VARS];
 647 uschar *authenticator_name     = NULL;
 648 int     auto_thaw              = 0;
 649 #ifdef WITH_CONTENT_SCAN
 650 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 651 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 652 #endif
 653
 654 #if BASE_62 == 62
 655 uschar *base62_chars=
 656     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 657 #else
 658 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 659 #endif
 660
 661 uschar *bi_command             = NULL;
 662 uschar *big_buffer             = NULL;
 663 int     big_buffer_size        = BIG_BUFFER_SIZE;
 664 #ifdef EXPERIMENTAL_BRIGHTMAIL
 665 uschar *bmi_alt_location       = NULL;
 666 uschar *bmi_base64_tracker_verdict = NULL;
 667 uschar *bmi_base64_verdict     = NULL;
 668 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 669 int     bmi_deliver            = 1;
 670 int     bmi_run                = 0;
 671 uschar *bmi_verdicts           = NULL;
 672 #endif
 673 int     bsmtp_transaction_linecount = 0;
 674 int     body_8bitmime          = 0;
 675 int     body_linecount         = 0;
 676 int     body_zerocount         = 0;
 677 uschar *bounce_message_file    = NULL;
 678 uschar *bounce_message_text    = NULL;
 679 const uschar *bounce_recipient = NULL;
 680 int     bounce_return_linesize_limit = 998;
 681 int     bounce_return_size_limit = 100*1024;
 682 uschar *bounce_sender_authentication = NULL;
 683
 684 uschar *callout_address        = NULL;
 685 int     callout_cache_domain_positive_expire = 7*24*60*60;
 686 int     callout_cache_domain_negative_expire = 3*60*60;
 687 int     callout_cache_positive_expire = 24*60*60;
 688 int     callout_cache_negative_expire = 2*60*60;
 689 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 690 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 691 int     check_log_inodes       = 100;
 692 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 693 int     check_spool_inodes     = 100;
 694 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 695
 696 uschar *chunking_advertise_hosts = US"*";
 697 unsigned chunking_datasize     = 0;
 698 unsigned chunking_data_left    = 0;
 699 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 700 const pcre2_code *regex_CHUNKING     = NULL;
 701
 702 #ifndef DISABLE_ESMTP_LIMITS
 703 const pcre2_code *regex_LIMITS        = NULL;
 704 #endif
 705
 706 uschar *client_authenticator   = NULL;
 707 uschar *client_authenticated_id = NULL;
 708 uschar *client_authenticated_sender = NULL;
 709 #ifndef DISABLE_CLIENT_CMD_LOG
 710 gstring *client_cmd_log        = NULL;
 711 #endif
 712 int     clmacro_count          = 0;
 713 uschar *clmacros[MAX_CLMACROS];
 714 FILE   *config_file            = NULL;
 715 const uschar *config_filename  = NULL;
 716 int     config_lineno          = 0;
 717 #ifdef CONFIGURE_GROUP
 718 gid_t   config_gid             = CONFIGURE_GROUP;
 719 #else
 720 gid_t   config_gid             = 0;
 721 #endif
 722 const uschar * config_main_filelist = US CONFIGURE_FILE
 723                          "\0<-----------Space to patch configure_filename->";
 724 uschar *config_main_filename   = NULL;
 725 uschar *config_main_directory  = NULL;
 726
 727 #ifdef CONFIGURE_OWNER
 728 uid_t   config_uid             = CONFIGURE_OWNER;
 729 #else
 730 uid_t   config_uid             = 0;
 731 #endif
 732
 733 const uschar *connection_id    = NULL;
 734 int     connection_max_messages= -1;
 735 unsigned continue_flags        = 0;
 736 #ifndef DISABLE_ESMTP_LIMITS
 737 unsigned continue_limit_mail   = 0;
 738 unsigned continue_limit_rcpt   = 0;
 739 unsigned continue_limit_rcptdom= 0;
 740 int     continue_fd            = -1;
 741 uschar *continue_proxy_cipher  = NULL;
 742 BOOL    continue_proxy_dane    = FALSE;
 743 uschar *continue_proxy_sni     = NULL;
 744 const uschar *continue_hostname      = NULL;
 745 const uschar *continue_host_address  = NULL;
 746 uschar  continue_next_id[MESSAGE_ID_LENGTH +1] = {[0]='\0'};
 747 int     continue_sequence      = 1;
 748 const uschar *continue_transport = NULL;
 749 #ifndef COMPILE_UTILITY
 750 open_db *continue_retry_db     = NULL;
 751 open_db *continue_wait_db      = NULL;
 752 #endif
 753 #endif
 754
 755 uschar *csa_status             = NULL;
 756 cut_t   cutthrough = {
 757   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 758   .delivery =           FALSE,                          /* when to attempt */
 759   .defer_pass =         FALSE,                          /* on defer: spool locally */
 760   .is_tls =             FALSE,                          /* not a TLS conn yet */
 761   .cctx =               {.sock = -1},                   /* open connection */
 762   .nrcpt =              0,                              /* number of addresses */
 763 };
 764
 765 int     daemon_notifier_fd     = -1;
 766 uschar *daemon_smtp_port       = US"smtp";
 767 int     daemon_startup_retries = 9;
 768 int     daemon_startup_sleep   = 30;
 769
 770 #ifdef EXPERIMENTAL_DCC
 771 uschar *dcc_header             = NULL;
 772 uschar *dcc_result             = NULL;
 773 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 774 uschar *dccifd_options         = US"header";
 775 #endif
 776
 777 int     debug_fd               = -1;
 778 FILE   *debug_file             = NULL;
 779 int     debug_notall[]         = {
 780   Di_memory,
 781   Di_noutf8,
 782   -1
 783 };
 784 bit_table debug_options[]      = { /* must be in alphabetical order and use
 785                                  only the enum values from macro.h */
 786   BIT_TABLE(D, acl),
 787   BIT_TABLE(D, all),
 788   BIT_TABLE(D, auth),
 789   BIT_TABLE(D, deliver),
 790   BIT_TABLE(D, dns),
 791   BIT_TABLE(D, dnsbl),
 792   BIT_TABLE(D, exec),
 793   BIT_TABLE(D, expand),
 794   BIT_TABLE(D, filter),
 795   BIT_TABLE(D, hints_lookup),
 796   BIT_TABLE(D, host_lookup),
 797   BIT_TABLE(D, ident),
 798   BIT_TABLE(D, interface),
 799   BIT_TABLE(D, lists),
 800   BIT_TABLE(D, load),
 801   BIT_TABLE(D, local_scan),
 802   BIT_TABLE(D, lookup),
 803   BIT_TABLE(D, memory),
 804   BIT_TABLE(D, noutf8),
 805   BIT_TABLE(D, pid),
 806   BIT_TABLE(D, process_info),
 807   BIT_TABLE(D, queue_run),
 808   BIT_TABLE(D, receive),
 809   BIT_TABLE(D, resolver),
 810   BIT_TABLE(D, retry),
 811   BIT_TABLE(D, rewrite),
 812   BIT_TABLE(D, route),
 813   BIT_TABLE(D, timestamp),
 814   BIT_TABLE(D, tls),
 815   BIT_TABLE(D, transport),
 816   BIT_TABLE(D, uid),
 817   BIT_TABLE(D, verify),
 818 };
 819 int      debug_options_count    = nelem(debug_options);
 820 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 821 unsigned debug_pretrigger_bsize = 0;
 822 uschar * debug_pretrigger_buf   = NULL;
 823 unsigned int debug_selector     = 0;
 824
 825 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 826 uschar *delay_warning_condition=
 827   US"${if or {"
 828             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 829             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 830             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 831             "} {no}{yes}}";
 832 uschar *deliver_address_data   = NULL;
 833 int     deliver_datafile       = -1;
 834 const uschar *deliver_domain   = NULL;
 835 uschar *deliver_domain_data    = NULL;
 836 const uschar *deliver_domain_orig = NULL;
 837 const uschar *deliver_domain_parent = NULL;
 838 time_t  deliver_frozen_at      = 0;
 839 uschar *deliver_home           = NULL;
 840 const uschar *deliver_host     = NULL;
 841 const uschar *deliver_host_address = NULL;
 842 int     deliver_host_port      = 0;
 843 uschar *deliver_in_buffer      = NULL;
 844 ino_t   deliver_inode          = 0;
 845 const uschar *deliver_localpart= NULL;
 846 uschar *deliver_localpart_data = NULL;
 847 const uschar *deliver_localpart_orig = NULL;
 848 const uschar *deliver_localpart_parent = NULL;
 849 const uschar *deliver_localpart_prefix = NULL;
 850 const uschar *deliver_localpart_prefix_v = NULL;
 851 const uschar *deliver_localpart_suffix = NULL;
 852 const uschar *deliver_localpart_suffix_v = NULL;
 853 uschar *deliver_out_buffer     = NULL;
 854 int     deliver_queue_load_max = -1;
 855 address_item  *deliver_recipients = NULL;
 856 uschar *deliver_selectstring   = NULL;
 857 uschar *deliver_selectstring_sender = NULL;
 858
 859 uschar *dns_again_means_nonexist = NULL;
 860 int     dns_csa_search_limit   = 5;
 861 int     dns_cname_loops        = 1;
 862 #ifdef SUPPORT_DANE
 863 int     dns_dane_ok            = -1;
 864 #endif
 865 uschar *dns_ipv4_lookup        = NULL;
 866 int     dns_retrans            = 0;
 867 int     dns_retry              = 0;
 868 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 869 uschar *dns_trust_aa           = NULL;
 870 int     dns_use_edns0          = -1; /* <0 = not coerced */
 871 uschar *dnslist_domain         = NULL;
 872 uschar *dnslist_matched        = NULL;
 873 uschar *dnslist_text           = NULL;
 874 uschar *dnslist_value          = NULL;
 875 tree_node *domainlist_anchor   = NULL;
 876 int     domainlist_count       = 0;
 877 const uschar *driver_srcfile   = NULL;
 878 int     driver_srcline         = 0;
 879 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 880 unsigned int dtrigger_selector = 0;
 881
 882 int     errno_quota            = ERRNO_QUOTA;
 883 uschar *errors_copy            = NULL;
 884 int     error_handling         = ERRORS_SENDER;
 885 uschar *errors_reply_to        = NULL;
 886 int     errors_sender_rc       = EXIT_FAILURE;
 887 #ifndef DISABLE_EVENT
 888 uschar *event_action           = NULL;  /* expansion for delivery events */
 889 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 890 int     event_defer_errno      = 0;
 891 const uschar *event_name       = NULL;  /* event name variable */
 892 #endif
 893
 894
 895 gid_t   exim_gid               = EXIM_GID;
 896 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 897                         "\0<---------------Space to patch exim_path->";
 898 uid_t   exim_uid               = EXIM_UID;
 899 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 900 int     expand_forbid          = 0;
 901 int     expand_nlength[EXPAND_MAXN+1];
 902 int     expand_nmax            = -1;
 903 const uschar *expand_nstring[EXPAND_MAXN+1];
 904 uschar *expand_string_message;
 905 uschar *extra_local_interfaces = NULL;
 906
 907 int     fake_response          = OK;
 908 uschar *fake_response_text     = US"Your message has been rejected but is "
 909                                    "being kept for evaluation.\nIf it was a "
 910                                    "legitimate message, it may still be "
 911                                    "delivered to the target recipient(s).";
 912 int     filter_n[FILTER_VARIABLE_COUNT];
 913 int     filter_sn[FILTER_VARIABLE_COUNT];
 914 int     filter_test            = FTEST_NONE;
 915 const uschar * filter_test_sfile = NULL;
 916 const uschar * filter_test_ufile = NULL;
 917 uschar *filter_thisaddress     = NULL;
 918 int     finduser_retries       = 0;
 919 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 920 uschar *freeze_tell            = NULL;
 921 uschar *freeze_tell_config     = NULL;
 922 uschar *fudged_queue_times     = US"";
 923
 924 uschar *gecos_name             = NULL;
 925 uschar *gecos_pattern          = NULL;
 926 rewrite_rule  *global_rewrite_rules = NULL;
 927
 928 volatile sig_atomic_t had_command_timeout = 0;
 929 volatile sig_atomic_t had_command_sigterm = 0;
 930 volatile sig_atomic_t had_data_timeout    = 0;
 931 volatile sig_atomic_t had_data_sigint     = 0;
 932 const uschar *headers_charset  = US HEADERS_CHARSET;
 933 int     header_insert_maxlen   = 64 * 1024;
 934 header_line  *header_last      = NULL;
 935 header_line  *header_list      = NULL;
 936 int     header_maxsize         = HEADER_MAXSIZE;
 937 int     header_line_maxsize    = 0;
 938
 939 header_name header_names[] = {
 940   /* name               len     allow_resent    htype */
 941   { US"bcc",            3,      TRUE,           htype_bcc },
 942   { US"cc",             2,      TRUE,           htype_cc },
 943   { US"date",           4,      TRUE,           htype_date },
 944   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 945   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 946   { US"from",           4,      TRUE,           htype_from },
 947   { US"message-id",    10,      TRUE,           htype_id },
 948   { US"received",       8,      FALSE,          htype_received },
 949   { US"reply-to",       8,      FALSE,          htype_reply_to },
 950   { US"return-path",   11,      FALSE,          htype_return_path },
 951   { US"sender",         6,      TRUE,           htype_sender },
 952   { US"subject",        7,      FALSE,          htype_subject },
 953   { US"to",             2,      TRUE,           htype_to }
 954 };
 955
 956 int header_names_size          = nelem(header_names);
 957
 958 uschar *helo_accept_junk_hosts = NULL;
 959 uschar *helo_allow_chars       = US"";
 960 uschar *helo_lookup_domains    = US"@ : @[]";
 961 uschar *helo_try_verify_hosts  = NULL;
 962 uschar *helo_verify_hosts      = NULL;
 963 const uschar *hex_digits       = CUS"0123456789abcdef";
 964 uschar *hold_domains           = NULL;
 965 uschar *host_data              = NULL;
 966 uschar *host_lookup            = NULL;
 967 uschar *host_lookup_order      = US"bydns:byaddr";
 968 uschar *host_lookup_msg        = US"";
 969 int     host_number            = 0;
 970 uschar *host_number_string     = NULL;
 971 uschar *host_reject_connection = NULL;
 972 uschar *hosts_connection_nolog = NULL;
 973 #ifdef SUPPORT_PROXY
 974 uschar *hosts_proxy            = NULL;
 975 #endif
 976 uschar *hosts_treat_as_local   = NULL;
 977 uschar *hosts_require_helo     = US"*";
 978 #ifdef EXPERIMENTAL_XCLIENT
 979 uschar *hosts_xclient          = NULL;
 980 #endif
 981 tree_node *hostlist_anchor     = NULL;
 982 int     hostlist_count         = 0;
 983
 984
 985 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 986 uschar *ignore_fromline_hosts  = NULL;
 987 int     inetd_wait_timeout     = -1;
 988 uschar *initial_cwd            = NULL;
 989 uschar *interface_address      = NULL;
 990 int     interface_port         = -1;
 991 uschar *iterate_item           = NULL;
 992
 993 int     journal_fd             = -1;
 994
 995 uschar *keep_environment       = NULL;
 996
 997 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 998
 999 uschar *eldap_dn               = NULL;
1000 const uschar *letter_digit_hyphen_dot =
1001     US"abcdefghijklmnopqrstuvwxyz"
1002       ".-0123456789"
1003       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1004 #ifndef DISABLE_ESMTP_LIMITS
1005 uschar *limits_advertise_hosts = US"*";
1006 #endif
1007 int     load_average           = -2;
1008 uschar *local_from_prefix      = NULL;
1009 uschar *local_from_suffix      = NULL;
1010
1011 #if HAVE_IPV6
1012 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1013 #else
1014 uschar *local_interfaces       = US"0.0.0.0";
1015 #endif
1016
1017 #ifdef HAVE_LOCAL_SCAN
1018 uschar *local_scan_data        = NULL;
1019 int     local_scan_timeout     = 5*60;
1020 #endif
1021 gid_t   local_user_gid         = (gid_t)(-1);
1022 uid_t   local_user_uid         = (uid_t)(-1);
1023
1024 tree_node *localpartlist_anchor= NULL;
1025 int     localpartlist_count    = 0;
1026 uschar *log_buffer             = NULL;
1027
1028 int     log_default[]          = { /* for initializing log_selector */
1029   Li_acl_warn_skipped,
1030   Li_connection_reject,
1031   Li_delay_delivery,
1032   Li_dkim,
1033   Li_dnslist_defer,
1034   Li_etrn,
1035   Li_host_lookup_failed,
1036   Li_lost_incoming_connection,
1037   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1038   Li_msg_id,
1039   Li_queue_run,
1040   Li_queue_time_exclusive,
1041   Li_rejected_header,
1042   Li_retry_defer,
1043   Li_sender_verify_fail,
1044   Li_size_reject,
1045   Li_skip_delivery,
1046   Li_smtp_confirmation,
1047   Li_tls_certificate_verified,
1048   Li_tls_cipher,
1049   -1
1050 };
1051
1052 uschar *log_file_path          = US LOG_FILE_PATH
1053                            "\0<--------------Space to patch log_file_path->";
1054
1055 int     log_notall[]           = {
1056   -1
1057 };
1058 bit_table log_options[]        = { /* must be in alphabetical order,
1059                                 with definitions from enum logbit. */
1060   BIT_TABLE(L, 8bitmime),
1061   BIT_TABLE(L, acl_warn_skipped),
1062   BIT_TABLE(L, address_rewrite),
1063   BIT_TABLE(L, all),
1064   BIT_TABLE(L, all_parents),
1065   BIT_TABLE(L, arguments),
1066   BIT_TABLE(L, connection_id),
1067   BIT_TABLE(L, connection_reject),
1068   BIT_TABLE(L, delay_delivery),
1069   BIT_TABLE(L, deliver_time),
1070   BIT_TABLE(L, delivery_size),
1071 #ifndef DISABLE_DKIM
1072   BIT_TABLE(L, dkim),
1073   BIT_TABLE(L, dkim_verbose),
1074 #endif
1075   BIT_TABLE(L, dnslist_defer),
1076   BIT_TABLE(L, dnssec),
1077   BIT_TABLE(L, etrn),
1078   BIT_TABLE(L, host_lookup_failed),
1079   BIT_TABLE(L, ident_timeout),
1080   BIT_TABLE(L, incoming_interface),
1081   BIT_TABLE(L, incoming_port),
1082   BIT_TABLE(L, lost_incoming_connection),
1083   BIT_TABLE(L, millisec),
1084   BIT_TABLE(L, msg_id),
1085   BIT_TABLE(L, msg_id_created),
1086   BIT_TABLE(L, outgoing_interface),
1087   BIT_TABLE(L, outgoing_port),
1088   BIT_TABLE(L, pid),
1089   BIT_TABLE(L, pipelining),
1090   BIT_TABLE(L, protocol_detail),
1091 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1092   BIT_TABLE(L, proxy),
1093 #endif
1094   BIT_TABLE(L, queue_run),
1095   BIT_TABLE(L, queue_time),
1096   BIT_TABLE(L, queue_time_exclusive),
1097   BIT_TABLE(L, queue_time_overall),
1098   BIT_TABLE(L, receive_time),
1099   BIT_TABLE(L, received_recipients),
1100   BIT_TABLE(L, received_sender),
1101   BIT_TABLE(L, rejected_header),
1102   { US"rejected_headers", Li_rejected_header },
1103   BIT_TABLE(L, retry_defer),
1104   BIT_TABLE(L, return_path_on_delivery),
1105   BIT_TABLE(L, sender_on_delivery),
1106   BIT_TABLE(L, sender_verify_fail),
1107   BIT_TABLE(L, size_reject),
1108   BIT_TABLE(L, skip_delivery),
1109   BIT_TABLE(L, smtp_confirmation),
1110   BIT_TABLE(L, smtp_connection),
1111   BIT_TABLE(L, smtp_incomplete_transaction),
1112   BIT_TABLE(L, smtp_mailauth),
1113   BIT_TABLE(L, smtp_no_mail),
1114   BIT_TABLE(L, smtp_protocol_error),
1115   BIT_TABLE(L, smtp_syntax_error),
1116   BIT_TABLE(L, subject),
1117   BIT_TABLE(L, tls_certificate_verified),
1118   BIT_TABLE(L, tls_cipher),
1119   BIT_TABLE(L, tls_peerdn),
1120   BIT_TABLE(L, tls_resumption),
1121   BIT_TABLE(L, tls_sni),
1122   BIT_TABLE(L, unknown_in_list),
1123 };
1124 int     log_options_count      = nelem(log_options);
1125
1126 int     log_reject_target      = 0;
1127 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1128 uschar *log_selector_string    = NULL;
1129 FILE   *log_stderr             = NULL;
1130 uschar *login_sender_address   = NULL;
1131 uschar *lookup_dnssec_authenticated = NULL;
1132 int     lookup_open_max        = 25;
1133 uschar *lookup_value           = NULL;
1134
1135 macro_item *macros_user        = NULL;
1136 uschar *mailstore_basename     = NULL;
1137 #ifdef WITH_CONTENT_SCAN
1138 uschar *malware_name           = NULL;  /* Virus Name */
1139 #endif
1140 int     max_received_linelength= 0;
1141 int     max_username_length    = 0;
1142 int     message_age            = 0;
1143 uschar *message_body           = NULL;
1144 uschar *message_body_end       = NULL;
1145 int     message_body_size      = 0;
1146 int     message_body_visible   = 500;
1147 int     message_ended          = END_NOTSTARTED;
1148 uschar *message_headers        = NULL;
1149 uschar *message_id;
1150 uschar *message_id_domain      = NULL;
1151 uschar *message_id_text        = NULL;
1152 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1153 uschar *message_id_external;
1154 int     message_linecount      = 0;
1155 int     message_size           = 0;
1156 uschar *message_size_limit     = US"50M";
1157 #ifdef SUPPORT_I18N
1158 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1159 #endif
1160 uschar  message_subdir[2]      = { 0, 0 };
1161 const uschar *message_reference= NULL;
1162
1163 /* MIME ACL expandables */
1164 #ifdef WITH_CONTENT_SCAN
1165 int     mime_anomaly_level     = 0;
1166 const uschar *mime_anomaly_text      = NULL;
1167 uschar *mime_boundary          = NULL;
1168 uschar *mime_charset           = NULL;
1169 uschar *mime_content_description = NULL;
1170 uschar *mime_content_disposition = NULL;
1171 uschar *mime_content_id        = NULL;
1172 unsigned int mime_content_size = 0;
1173 uschar *mime_content_transfer_encoding = NULL;
1174 uschar *mime_content_type      = NULL;
1175 uschar *mime_decoded_filename  = NULL;
1176 uschar *mime_filename          = NULL;
1177 int     mime_is_multipart      = 0;
1178 int     mime_is_coverletter    = 0;
1179 int     mime_is_rfc822         = 0;
1180 int     mime_part_count        = -1;
1181 #endif
1182
1183 uid_t  *never_users            = NULL;
1184 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1185
1186 const int on                   = 1;     /* for setsockopt */
1187 const int off                  = 0;
1188
1189 uid_t   original_euid;
1190 gid_t   originator_gid;
1191 uschar *originator_login       = NULL;
1192 uschar *originator_name        = NULL;
1193 uid_t   originator_uid;
1194 uschar *override_local_interfaces = NULL;
1195 const uschar *override_pid_file_path = NULL;
1196
1197 BOOL    panic_coredump         = FALSE;
1198 pcre2_general_context * pcre_gen_ctx = NULL;
1199 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1200 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1201 pcre2_general_context * pcre_mlc_ctx = NULL;
1202 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1203
1204 uschar *percent_hack_domains   = NULL;
1205 const uschar *pid_file_path    = US PID_FILE_PATH
1206                            "\0<--------------Space to patch pid_file_path->";
1207 #ifndef DISABLE_PIPE_CONNECT
1208 uschar *pipe_connect_advertise_hosts = US"*";
1209 #endif
1210 uschar *pipelining_advertise_hosts = US"*";
1211 uschar *primary_hostname       = NULL;
1212 uschar *process_info;
1213 int     process_info_len       = 0;
1214 uschar *process_log_path       = NULL;
1215 const uschar *process_purpose  = US"fresh-exec";
1216
1217 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1218 uschar *proxy_external_address = NULL;
1219 int     proxy_external_port    = 0;
1220 uschar *proxy_local_address    = NULL;
1221 int     proxy_local_port       = 0;
1222 int     proxy_protocol_timeout = 3;
1223 #endif
1224
1225 uschar *prvscheck_address      = NULL;
1226 uschar *prvscheck_keynum       = NULL;
1227 uschar *prvscheck_result       = NULL;
1228
1229
1230 qrunner *qrunners              = NULL;
1231
1232 const uschar *qualify_domain_recipient = NULL;
1233 uschar *qualify_domain_sender  = NULL;
1234 uschar *queue_domains          = NULL;
1235 int     queue_interval         = -1;
1236 uschar *queue_name             = US"";
1237 uschar *queue_name_dest        = NULL;
1238 uschar *queue_only_file        = NULL;
1239 int     queue_only_load        = -1;
1240 uschar *queue_run_max          = US"5";
1241 pid_t   queue_run_pid          = (pid_t)0;
1242 int     queue_run_pipe         = -1;
1243 unsigned queue_size            = 0;
1244 time_t  queue_size_next        = 0;
1245 uschar *queue_smtp_domains     = NULL;
1246
1247 uint32_t random_seed           = 0;
1248 tree_node *ratelimiters_cmd    = NULL;
1249 tree_node *ratelimiters_conn   = NULL;
1250 tree_node *ratelimiters_mail   = NULL;
1251 uschar *raw_active_hostname    = NULL;
1252 const uschar *raw_sender       = NULL;
1253 const uschar **raw_recipients  = NULL;
1254 int     raw_recipients_count   = 0;
1255
1256 int     rcpt_count             = 0;
1257 int     rcpt_fail_count        = 0;
1258 int     rcpt_defer_count       = 0;
1259 gid_t   real_gid;
1260 uid_t   real_uid;
1261 int     receive_linecount      = 0;
1262 int     receive_messagecount   = 0;
1263 int     receive_timeout        = 0;
1264 int     received_count         = 0;
1265 const uschar *received_for     = NULL;
1266
1267 /*  This is the default text for Received headers generated by Exim. The
1268 date  will be automatically added on the end. */
1269
1270 uschar *received_header_text   = US
1271      "Received: "
1272      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1273        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1274          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1275      "by $primary_hostname "
1276      "${if def:received_protocol {with $received_protocol }}"
1277 #ifndef DISABLE_TLS
1278      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1279      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1280 #endif
1281      "(Exim $version_number)\n\t"
1282      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1283      "id $message_exim_id"
1284      "${if def:received_for {\n\tfor $received_for}}"
1285      "\0<---------------Space to patch received_header_text->";
1286
1287 int     received_headers_max   = 30;
1288 uschar *received_protocol      = NULL;
1289 struct timeval received_time   = { 0, 0 };
1290 struct timeval received_time_complete = { 0, 0 };
1291 uschar *recipient_data         = NULL;
1292 uschar *recipient_unqualified_hosts = NULL;
1293 uschar *recipient_verify_failure = NULL;
1294 int     recipients_count       = 0;
1295 recipient_item  *recipients_list = NULL;
1296 int     recipients_list_max    = 0;
1297 uschar *recipients_max         = US"50000";
1298 int     recipients_max_expanded= 0;
1299 const pcre2_code *regex_AUTH         = NULL;
1300 const pcre2_code *regex_check_dns_names = NULL;
1301 const pcre2_code *regex_From         = NULL;
1302 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1303 const pcre2_code *regex_PIPELINING   = NULL;
1304 const pcre2_code *regex_SIZE         = NULL;
1305 #ifndef DISABLE_PIPE_CONNECT
1306 const pcre2_code *regex_EARLY_PIPE   = NULL;
1307 #endif
1308 int    regex_cachesize               = 0;
1309 const pcre2_code *regex_ismsgid      = NULL;
1310 const pcre2_code *regex_smtp_code    = NULL;
1311 const uschar *regex_vars[REGEX_VARS] = { NULL };
1312 #ifdef WHITELIST_D_MACROS
1313 const pcre2_code *regex_whitelisted_macro = NULL;
1314 #endif
1315 #ifdef WITH_CONTENT_SCAN
1316 uschar *regex_match_string     = NULL;
1317 #endif
1318 int     remote_delivery_count  = 0;
1319 int     remote_max_parallel    = 4;
1320 uschar *remote_sort_domains    = NULL;
1321 int     retry_data_expire      = 7*24*60*60;
1322 int     retry_interval_max     = 24*60*60;
1323 int     retry_maximum_timeout  = 0;        /* set from retry config */
1324 retry_config  *retries         = NULL;
1325 const uschar *return_path            = NULL;
1326 int     rewrite_existflags     = 0;
1327 uschar *rfc1413_hosts          = US"@[]";
1328 int     rfc1413_query_timeout  = 0;
1329 uid_t   root_gid               = ROOT_GID;
1330 uid_t   root_uid               = ROOT_UID;
1331
1332 router_instance  *routers  = NULL;
1333
1334 /* All elements not mentioned will be 0/NULL/FALSE */
1335 router_instance  router_defaults = {
1336     .self =                     US"freeze",
1337
1338     .address_test =             TRUE,
1339     .expn =                     TRUE,
1340     .log_as_local =             TRUE_UNSET,
1341     .more =                     TRUE,
1342     .repeat_use =               TRUE,
1343     .retry_use_local_part =     TRUE_UNSET,
1344     .verify_recipient =         TRUE,
1345     .verify_sender =            TRUE,
1346
1347     .self_code =                self_freeze,
1348     .uid =                      (uid_t)(-1),
1349     .gid =                      (gid_t)(-1),
1350
1351     .dnssec =                   { .request= US"*", .require=NULL },
1352 };
1353
1354 const uschar *router_name      = NULL;
1355 tree_node *router_var          = NULL;
1356
1357 ip_address_item *running_interfaces = NULL;
1358
1359 /* This is a weird one. The following string gets patched in the binary by the
1360 script that sets up a copy of Exim for running in the test harness. It seems
1361 that compilers are now clever, and share constant strings if they can.
1362 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1363 make use of the end of this string in order to save space. So the patching then
1364 wrecks this. We defeat this optimization by adding some additional characters
1365 onto the end of the string. */
1366
1367 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1368
1369 int     runrc                  = 0;
1370
1371 uschar *search_error_message   = NULL;
1372 uschar *self_hostname          = NULL;
1373 const uschar *sender_address   = NULL;
1374 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1375 uschar *sender_address_data    = NULL;
1376 const uschar *sender_address_unrewritten = NULL;
1377 uschar *sender_data            = NULL;
1378 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1379 uschar *sender_fullhost        = NULL;
1380 uschar *sender_helo_name       = NULL;
1381 uschar **sender_host_aliases   = &no_aliases;
1382 uschar *sender_host_address    = NULL;
1383 uschar *sender_host_authenticated = NULL;
1384 uschar *sender_host_auth_pubname  = NULL;
1385 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1386 uschar *sender_host_name       = NULL;
1387 int     sender_host_port       = 0;
1388 uschar *sender_ident           = NULL;
1389 uschar *sender_rate            = NULL;
1390 uschar *sender_rate_limit      = NULL;
1391 uschar *sender_rate_period     = NULL;
1392 uschar *sender_rcvhost         = NULL;
1393 uschar *sender_unqualified_hosts = NULL;
1394 uschar *sender_verify_failure = NULL;
1395 address_item *sender_verified_list  = NULL;
1396 address_item *sender_verified_failed = NULL;
1397 int     sender_verified_rc     = -1;
1398 uschar *sending_ip_address     = NULL;
1399 int     sending_port           = -1;
1400 SIGNAL_BOOL sigalrm_seen       = FALSE;
1401 const uschar *sigalarm_setter  = NULL;
1402 const uschar **sighup_argv     = NULL;
1403 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1404 int     smtp_accept_count      = 0;
1405 int     smtp_accept_max        = 20;
1406 int     smtp_accept_max_nonmail= 10;
1407 uschar *smtp_accept_max_nonmail_hosts = US"*";
1408 uschar *smtp_accept_max_per_connection = US"1000";
1409 uschar *smtp_accept_max_per_host = NULL;
1410 int     smtp_accept_queue      = 0;
1411 int     smtp_accept_queue_per_connection = 10;
1412 int     smtp_accept_reserve    = 0;
1413 uschar *smtp_active_hostname   = NULL;
1414 int     smtp_backlog_monitor   = 0;
1415 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1416                              "Exim $version_number $tod_full"
1417                              "\0<---------------Space to patch smtp_banner->";
1418 int     smtp_ch_index          = 0;
1419 uschar *smtp_cmd_argument      = NULL;
1420 uschar *smtp_cmd_buffer        = NULL;
1421 struct timeval smtp_connection_start  = {0,0};
1422 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1423 int     smtp_connect_backlog   = 20;
1424 double  smtp_delay_mail        = 0.0;
1425 double  smtp_delay_rcpt        = 0.0;
1426 FILE   *smtp_in                = NULL;
1427 int     smtp_listen_backlog    = 0;
1428 int     smtp_load_reserve      = -1;
1429 int     smtp_mailcmd_count     = 0;
1430 int     smtp_mailcmd_max       = -1;
1431 FILE   *smtp_out               = NULL;
1432 uschar *smtp_etrn_command      = NULL;
1433 int     smtp_max_synprot_errors= 3;
1434 int     smtp_max_unknown_commands = 3;
1435 uschar *smtp_notquit_reason    = NULL;
1436 unsigned smtp_peer_options     = 0;
1437 unsigned smtp_peer_options_wrap= 0;
1438 uschar *smtp_ratelimit_hosts   = NULL;
1439 uschar *smtp_ratelimit_mail    = NULL;
1440 uschar *smtp_ratelimit_rcpt    = NULL;
1441 uschar *smtp_read_error        = US"";
1442 int     smtp_receive_timeout   = 5*60;
1443 uschar *smtp_receive_timeout_s = NULL;
1444 uschar *smtp_reserve_hosts     = NULL;
1445 int     smtp_rlm_base          = 0;
1446 double  smtp_rlm_factor        = 0.0;
1447 int     smtp_rlm_limit         = 0;
1448 int     smtp_rlm_threshold     = INT_MAX;
1449 int     smtp_rlr_base          = 0;
1450 double  smtp_rlr_factor        = 0.0;
1451 int     smtp_rlr_limit         = 0;
1452 int     smtp_rlr_threshold     = INT_MAX;
1453 #ifdef SUPPORT_I18N
1454 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1455 #endif
1456
1457 #ifdef WITH_CONTENT_SCAN
1458 uschar *spamd_address          = US"127.0.0.1 783";
1459 uschar *spam_bar               = NULL;
1460 uschar *spam_report            = NULL;
1461 uschar *spam_action            = NULL;
1462 uschar *spam_score             = NULL;
1463 uschar *spam_score_int         = NULL;
1464 #endif
1465
1466 FILE   *spool_data_file        = NULL;
1467 uschar *spool_directory        = US SPOOL_DIRECTORY
1468                            "\0<--------------Space to patch spool_directory->";
1469 #ifdef SUPPORT_SRS
1470 uschar *srs_recipient          = NULL;
1471 #endif
1472 int     string_datestamp_offset= -1;
1473 int     string_datestamp_length= 0;
1474 int     string_datestamp_type  = -1;
1475 const uschar *submission_domain = NULL;
1476 const uschar *submission_name  = NULL;
1477 int     syslog_facility        = LOG_MAIL;
1478 const uschar *syslog_processname= US"exim";
1479 uschar *system_filter          = NULL;
1480
1481 uschar *system_filter_directory_transport = NULL;
1482 uschar *system_filter_file_transport = NULL;
1483 uschar *system_filter_pipe_transport = NULL;
1484 uschar *system_filter_reply_transport = NULL;
1485
1486 gid_t   system_filter_gid      = 0;
1487 uid_t   system_filter_uid      = (uid_t)-1;
1488
1489 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1490 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1491 #ifdef USE_TCP_WRAPPERS
1492 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1493 #endif
1494 int     test_harness_load_avg  = 0;
1495 int     thismessage_size_limit = 0;
1496 int     timeout_frozen_after   = 0;
1497 #ifdef MEASURE_TIMING
1498 struct timeval timestamp_startup;
1499 #endif
1500
1501 transport_instance  *transports = NULL;
1502
1503 transport_instance  transport_defaults = {
1504     /* All non-mentioned elements zero/NULL/FALSE */
1505     .batch_max =                1,
1506     .multi_domain =             TRUE,
1507     .max_addresses =            US"100",
1508     .connection_max_messages =  500,
1509     .uid =                      (uid_t)(-1),
1510     .gid =                      (gid_t)(-1),
1511     .filter_timeout =           300,
1512     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1513                                                  1 nor 0 so can detect unset */
1514 };
1515
1516 int     transport_count;
1517 const uschar *transport_name          = NULL;
1518 int     transport_newlines;
1519 const uschar **transport_filter_argv  = NULL;
1520 int     transport_filter_timeout;
1521 int     transport_write_timeout= 0;
1522
1523 tree_node  *tree_dns_fails     = NULL;
1524 tree_node  *tree_duplicates    = NULL;
1525 tree_node  *tree_nonrecipients = NULL;
1526 tree_node  *tree_unusable      = NULL;
1527
1528 gid_t  *trusted_groups         = NULL;
1529 uid_t  *trusted_users          = NULL;
1530 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1531
1532 uschar *unknown_login          = NULL;
1533 uschar *unknown_username       = NULL;
1534 uschar *untrusted_set_sender   = NULL;
1535
1536 /*  A regex for matching a "From_" line in an incoming message, in the form
1537
1538     From ph10 Fri Jan  5 12:35 GMT 1996
1539
1540 which  the "mail" commands send to the MTA (undocumented, of course), or in
1541 the  form
1542
1543     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1544
1545 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1546 Because  of variations in time formats, just match up to the minutes. That
1547 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1548 so  just require one digit for hours and minutes. The weekday is also absent
1549 in  some forms. */
1550
1551 uschar *uucp_from_pattern      = US
1552    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1553    "(?:"                                          /* Non-extracting bracket */
1554    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1555    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1556    ")"                                            /* End alternation */
1557    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1558
1559 uschar *uucp_from_sender       = US"$1";
1560
1561 uschar *verify_mode            = NULL;
1562 uschar *version_copyright      =
1563  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1564    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2024";
1565 uschar *version_date           = US"?";
1566 uschar *version_cnumber        = US"????";
1567 uschar *version_string         = US"?";
1568
1569 uschar *warn_message_file      = NULL;
1570 int     warning_count          = 0;
1571 const uschar *warnmsg_delay    = NULL;
1572 const uschar *warnmsg_recipients = NULL;
1573
1574 #ifndef DISABLE_WELLKNOWN
1575 uschar *wellknown_advertise_hosts = NULL;
1576 uschar *wellknown_response     = NULL;
1577 #endif
1578
1579 /*  End of globals.c */
1580 /* vi: aw ai sw=2
1581 */