src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) The Exim Maintainers 2020 - 2024 */
   6 /* Copyright (c) University of Cambridge 1995 - 2018 */
   7 /* See the file NOTICE for conditions of use and distribution. */
   8 /* SPDX-License-Identifier: GPL-2.0-or-later */
   9
  10 /* All the global variables are defined together in this one module, so
  11 that they are easy to find. */
  12
  13 #include "exim.h"
  14
  15
  16 /* Generic options for auths, all of which live inside auth_instance
  17 data blocks and hence have the opt_public flag set. */
  18
  19 optionlist optionlist_auths[] = {
  20   { "client_condition", opt_stringptr | opt_public,
  21                  OPT_OFF(auth_instance, client_condition) },
  22   { "client_set_id", opt_stringptr | opt_public,
  23                  OPT_OFF(auth_instance, set_client_id) },
  24   { "driver",        opt_stringptr | opt_public,
  25                  OPT_OFF(auth_instance, driver_name) },
  26   { "public_name",   opt_stringptr | opt_public,
  27                  OPT_OFF(auth_instance, public_name) },
  28   { "server_advertise_condition", opt_stringptr | opt_public,
  29                  OPT_OFF(auth_instance, advertise_condition)},
  30   { "server_condition", opt_stringptr | opt_public,
  31                  OPT_OFF(auth_instance, server_condition) },
  32   { "server_debug_print", opt_stringptr | opt_public,
  33                  OPT_OFF(auth_instance, server_debug_string) },
  34   { "server_mail_auth_condition", opt_stringptr | opt_public,
  35                  OPT_OFF(auth_instance, mail_auth_condition) },
  36   { "server_set_id", opt_stringptr | opt_public,
  37                  OPT_OFF(auth_instance, set_id) }
  38 };
  39
  40 int     optionlist_auths_size = nelem(optionlist_auths);
  41
  42 /* An empty host aliases list. */
  43
  44 uschar *no_aliases             = NULL;
  45
  46
  47 /* For comments on these variables, see globals.h. I'm too idle to
  48 duplicate them here... */
  49
  50 #ifdef EXIM_PERL
  51 uschar *opt_perl_startup       = NULL;
  52 BOOL    opt_perl_at_start      = FALSE;
  53 BOOL    opt_perl_started       = FALSE;
  54 BOOL    opt_perl_taintmode     = FALSE;
  55 #endif
  56
  57 #ifdef EXPAND_DLFUNC
  58 tree_node *dlobj_anchor        = NULL;
  59 #endif
  60
  61 #ifdef LOOKUP_IBASE
  62 uschar *ibase_servers          = NULL;
  63 #endif
  64
  65 #ifdef LOOKUP_LDAP
  66 uschar *eldap_ca_cert_dir      = NULL;
  67 uschar *eldap_ca_cert_file     = NULL;
  68 uschar *eldap_cert_file        = NULL;
  69 uschar *eldap_cert_key         = NULL;
  70 uschar *eldap_cipher_suite     = NULL;
  71 uschar *eldap_default_servers  = NULL;
  72 uschar *eldap_require_cert     = NULL;
  73 int     eldap_version          = -1;
  74 BOOL    eldap_start_tls        = FALSE;
  75 #endif
  76
  77 #ifdef LOOKUP_MYSQL
  78 uschar *mysql_servers          = NULL;
  79 #endif
  80
  81 #ifdef LOOKUP_ORACLE
  82 uschar *oracle_servers         = NULL;
  83 #endif
  84
  85 #ifdef LOOKUP_PGSQL
  86 uschar *pgsql_servers          = NULL;
  87 #endif
  88
  89 #ifdef LOOKUP_REDIS
  90 uschar *redis_servers          = NULL;
  91 #endif
  92
  93 #ifdef LOOKUP_SQLITE
  94 uschar *sqlite_dbfile          = NULL;
  95 int     sqlite_lock_timeout    = 5;
  96 #endif
  97
  98 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  99 BOOL    move_frozen_messages   = FALSE;
 100 #endif
 101
 102 /* These variables are outside the #ifdef because it keeps the code less
 103 cluttered in several places (e.g. during logging) if we can always refer to
 104 them. Also, the tls_ variables are now always visible.  Note that these are
 105 only used for smtp connections, not for service-daemon access. */
 106
 107 tls_support tls_in = {
 108  .active =              {.sock = -1}
 109  /* all other elements zero */
 110 };
 111 tls_support tls_out = {
 112  .active =              {.sock = -1},
 113  /* all other elements zero */
 114 };
 115
 116 uschar *dsn_envid              = NULL;
 117 int     dsn_ret                = 0;
 118 const pcre2_code  *regex_DSN         = NULL;
 119 uschar *dsn_advertise_hosts    = NULL;
 120
 121 #ifndef DISABLE_TLS
 122 BOOL    gnutls_compat_mode     = FALSE;
 123 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 124 uschar *hosts_require_alpn     = NULL;
 125 uschar *openssl_options        = NULL;
 126 const pcre2_code *regex_STARTTLS     = NULL;
 127 uschar *tls_advertise_hosts    = US"*";
 128 uschar *tls_alpn               = US"smtp:esmtp";
 129 uschar *tls_certificate        = NULL;
 130 uschar *tls_crl                = NULL;
 131 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 132 that's the interop problem which has been observed: GnuTLS suggesting a higher
 133 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 134 int     tls_dh_max_bits        = 2236;
 135 uschar *tls_dhparam            = NULL;
 136 uschar *tls_eccurve            = US"auto";
 137 # ifndef DISABLE_OCSP
 138 uschar *tls_ocsp_file          = NULL;
 139 # endif
 140 uschar *tls_privatekey         = NULL;
 141 BOOL    tls_remember_esmtp     = FALSE;
 142 uschar *tls_require_ciphers    = NULL;
 143 # ifndef DISABLE_TLS_RESUME
 144 uschar *tls_resumption_hosts   = NULL;
 145 # endif
 146 uschar *tls_try_verify_hosts   = NULL;
 147 uschar *tls_verify_certificates= US"system";
 148 uschar *tls_verify_hosts       = NULL;
 149 int     tls_watch_fd           = -1;
 150 time_t  tls_watch_trigger_time = (time_t)0;
 151 #else   /*DISABLE_TLS*/
 152 uschar *tls_advertise_hosts    = NULL;
 153 #endif
 154
 155 #ifndef DISABLE_PRDR
 156 /* Per Recipient Data Response variables */
 157 BOOL    prdr_enable            = FALSE;
 158 BOOL    prdr_requested         = FALSE;
 159 const pcre2_code *regex_PRDR         = NULL;
 160 #endif
 161
 162 #ifdef SUPPORT_I18N
 163 const pcre2_code *regex_UTF8         = NULL;
 164 #endif
 165
 166 /* Input-reading functions for messages, so we can use special ones for
 167 incoming TCP/IP. The defaults use stdin. We never need these for any
 168 stand-alone tests. */
 169
 170 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 171 int     (*lwr_receive_getc)(unsigned)   = stdin_getc;
 172 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 173 int     (*lwr_receive_ungetc)(int)      = stdin_ungetc;
 174 BOOL    (*lwr_receive_hasc)(void)       = stdin_hasc;
 175
 176 int     (*receive_getc)(unsigned)       = stdin_getc;
 177 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 178 void    (*receive_get_cache)(unsigned)  = NULL;
 179 BOOL    (*receive_hasc)(void)           = stdin_hasc;
 180 int     (*receive_ungetc)(int)          = stdin_ungetc;
 181 int     (*receive_feof)(void)           = stdin_feof;
 182 int     (*receive_ferror)(void)         = stdin_ferror;
 183 #endif
 184
 185
 186 /* List of per-address expansion variables for clearing and saving/restoring
 187 when verifying one address while routing/verifying another. We have to have
 188 the size explicit, because it is referenced from more than one module. */
 189
 190 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 191   CUSS &deliver_address_data,
 192   CUSS &deliver_domain,
 193   CUSS &deliver_domain_data,
 194   CUSS &deliver_domain_orig,
 195   CUSS &deliver_domain_parent,
 196   CUSS &deliver_localpart,
 197   CUSS &deliver_localpart_data,
 198   CUSS &deliver_localpart_orig,
 199   CUSS &deliver_localpart_parent,
 200   CUSS &deliver_localpart_prefix,
 201   CUSS &deliver_localpart_suffix,
 202   CUSS (uschar **)(&deliver_recipients),
 203   CUSS &deliver_host,
 204   CUSS &deliver_home,
 205   CUSS &address_file,
 206   CUSS &address_pipe,
 207   CUSS &self_hostname,
 208   NULL };
 209
 210 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 211
 212 /******************************************************************************/
 213 /* General global variables.  Boolean flags are done as a group
 214 so that only one bit each is needed, packed, for all those we never
 215 need to take a pointer - and only a char for the rest.
 216 This means a struct, unfortunately since it clutters the sourcecode. */
 217
 218 struct global_flags f =
 219 {
 220         .acl_temp_details       = FALSE,
 221         .active_local_from_check = FALSE,
 222         .active_local_sender_retain = FALSE,
 223         .address_test_mode      = FALSE,
 224         .admin_user             = FALSE,
 225         .allow_auth_unadvertised= FALSE,
 226         .allow_unqualified_recipient = TRUE,    /* For local messages */
 227         .allow_unqualified_sender = TRUE,       /* Reset for SMTP */
 228         .authentication_local   = FALSE,
 229
 230         .background_daemon      = TRUE,
 231         .bdat_readers_wanted    = FALSE,
 232
 233         .chunking_offered       = FALSE,
 234         .config_changed         = FALSE,
 235         .continue_more          = FALSE,
 236
 237         .daemon_listen          = FALSE,
 238         .daemon_scion           = FALSE,
 239         .debug_daemon           = FALSE,
 240         .deliver_firsttime      = FALSE,
 241         .deliver_force          = FALSE,
 242         .deliver_freeze         = FALSE,
 243         .deliver_force_thaw     = FALSE,
 244         .deliver_manual_thaw    = FALSE,
 245         .deliver_selectstring_regex = FALSE,
 246         .deliver_selectstring_sender_regex = FALSE,
 247         .disable_callout_flush  = FALSE,
 248         .disable_delay_flush    = FALSE,
 249         .disable_logging        = FALSE,
 250 #ifndef DISABLE_DKIM
 251         .dkim_disable_verify      = FALSE,
 252         .dkim_init_done           = FALSE,
 253 #endif
 254 #ifdef SUPPORT_DMARC
 255         .dmarc_has_been_checked  = FALSE,
 256         .dmarc_disable_verify    = FALSE,
 257         .dmarc_enable_forensic   = FALSE,
 258 #endif
 259         .dont_deliver           = FALSE,
 260         .dot_ends               = TRUE,
 261
 262         .enable_dollar_recipients = FALSE,
 263         .expand_string_forcedfail = FALSE,
 264
 265         .filter_running         = FALSE,
 266
 267         .header_rewritten       = FALSE,
 268         .helo_verified          = FALSE,
 269         .helo_verify_failed     = FALSE,
 270         .host_checking_callout  = FALSE,
 271         .host_find_failed_syntax= FALSE,
 272
 273         .inetd_wait_mode        = FALSE,
 274         .is_inetd               = FALSE,
 275
 276         .local_error_message    = FALSE,
 277         .log_testing_mode       = FALSE,
 278
 279 #ifdef WITH_CONTENT_SCAN
 280         .no_mbox_unspool        = FALSE,
 281 #endif
 282         .no_multiline_responses = FALSE,
 283         .notifier_socket_en     = TRUE,
 284
 285         .parse_allow_group      = FALSE,
 286         .parse_found_group      = FALSE,
 287         .pipelining_enable      = TRUE,
 288 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 289         .proxy_session_failed   = FALSE,
 290 #endif
 291
 292         .queue_2stage           = FALSE,
 293         .queue_only_policy      = FALSE,
 294         .queue_run_local        = FALSE,
 295         .queue_running          = FALSE,
 296         .queue_smtp             = FALSE,
 297
 298         .really_exim            = TRUE,
 299         .receive_call_bombout   = FALSE,
 300         .recipients_discarded   = FALSE,
 301         .running_in_test_harness = FALSE,
 302
 303         .search_find_defer      = FALSE,
 304         .sender_address_forced  = FALSE,
 305         .sender_host_notsocket  = FALSE,
 306         .sender_host_unknown    = FALSE,
 307         .sender_local           = FALSE,
 308         .sender_name_forced     = FALSE,
 309         .sender_set_untrusted   = FALSE,
 310         .smtp_authenticated     = FALSE,
 311 #ifndef DISABLE_PIPE_CONNECT
 312         .smtp_in_early_pipe_advertised = FALSE,
 313         .smtp_in_early_pipe_no_auth = FALSE,
 314         .smtp_in_early_pipe_used = FALSE,
 315 #endif
 316         .smtp_in_pipelining_advertised = FALSE,
 317         .smtp_in_pipelining_used = FALSE,
 318         .smtp_in_quit           = FALSE,
 319         .spool_file_wireformat  = FALSE,
 320         .submission_mode        = FALSE,
 321         .suppress_local_fixups  = FALSE,
 322         .suppress_local_fixups_default = FALSE,
 323         .synchronous_delivery   = FALSE,
 324         .system_filtering       = FALSE,
 325
 326         .taint_check_slow       = FALSE,
 327         .testsuite_delays       = TRUE,
 328         .tcp_fastopen_ok        = FALSE,
 329         .tcp_in_fastopen        = FALSE,
 330         .tcp_in_fastopen_data   = FALSE,
 331         .tcp_in_fastopen_logged = FALSE,
 332         .tcp_out_fastopen_logged= FALSE,
 333         .timestamps_utc         = FALSE,
 334         .transport_filter_timed_out = FALSE,
 335         .trusted_caller         = FALSE,
 336         .trusted_config         = TRUE,
 337 };
 338
 339 /******************************************************************************/
 340 /* These are the flags which are either variables or mainsection options,
 341 so an address is needed for access, or are exported to local_scan. */
 342
 343 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 344 BOOL    allow_domain_literals  = FALSE;
 345 BOOL    allow_mx_to_ip         = FALSE;
 346 BOOL    allow_utf8_domains     = FALSE;
 347 BOOL    authentication_failed  = FALSE;
 348
 349 BOOL    bounce_return_body     = TRUE;
 350 BOOL    bounce_return_message  = TRUE;
 351 BOOL    check_rfc2047_length   = TRUE;
 352 BOOL    commandline_checks_require_admin = FALSE;
 353
 354 #ifdef EXPERIMENTAL_DCC
 355 BOOL    dcc_direct_add_header  = FALSE;
 356 #endif
 357 BOOL    debug_store            = FALSE;
 358 BOOL    delivery_date_remove   = TRUE;
 359 BOOL    deliver_drop_privilege = FALSE;
 360 #ifdef ENABLE_DISABLE_FSYNC
 361 BOOL    disable_fsync          = FALSE;
 362 #endif
 363 BOOL    disable_ipv6           = FALSE;
 364 BOOL    dns_csa_use_reverse    = TRUE;
 365 BOOL    drop_cr                = FALSE;         /* No longer used */
 366
 367 BOOL    envelope_to_remove     = TRUE;
 368 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 369 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 370 BOOL    extract_addresses_remove_arguments = TRUE;
 371
 372 BOOL    host_checking          = FALSE;
 373 BOOL    host_lookup_deferred   = FALSE;
 374 BOOL    host_lookup_failed     = FALSE;
 375 BOOL    ignore_fromline_local  = FALSE;
 376
 377 BOOL    local_from_check       = TRUE;
 378 BOOL    local_sender_retain    = FALSE;
 379 BOOL    log_timezone           = FALSE;
 380 BOOL    message_body_newlines  = FALSE;
 381 BOOL    message_logs           = TRUE;
 382 #ifdef SUPPORT_I18N
 383 BOOL    message_smtputf8       = FALSE;
 384 #endif
 385 BOOL    mua_wrapper            = FALSE;
 386
 387 BOOL    preserve_message_logs  = FALSE;
 388 BOOL    print_topbitchars      = FALSE;
 389 BOOL    prod_requires_admin    = TRUE;
 390 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
 391 BOOL    proxy_session          = FALSE;
 392 #endif
 393
 394 #ifndef DISABLE_QUEUE_RAMP
 395 BOOL    queue_fast_ramp         = TRUE;
 396 #endif
 397 BOOL    queue_list_requires_admin = TRUE;
 398 BOOL    queue_only             = FALSE;
 399 BOOL    queue_only_load_latch  = TRUE;
 400 BOOL    queue_only_override    = TRUE;
 401 BOOL    queue_run_in_order     = FALSE;
 402 BOOL    recipients_max_reject  = FALSE;
 403 BOOL    return_path_remove     = TRUE;
 404
 405 BOOL    smtp_batched_input     = FALSE;
 406 BOOL    sender_helo_dnssec     = FALSE;
 407 BOOL    sender_host_dnssec     = FALSE;
 408 BOOL    smtp_accept_keepalive  = TRUE;
 409 BOOL    smtp_check_spool_space = TRUE;
 410 BOOL    smtp_enforce_sync      = TRUE;
 411 BOOL    smtp_etrn_serialize    = TRUE;
 412 BOOL    smtp_input             = FALSE;
 413 BOOL    smtp_return_error_details = FALSE;
 414 #ifdef SUPPORT_SPF
 415 BOOL    spf_result_guessed     = FALSE;
 416 #endif
 417 BOOL    split_spool_directory  = FALSE;
 418 BOOL    spool_wireformat       = FALSE;
 419 BOOL    strict_acl_vars        = FALSE;
 420 BOOL    strip_excess_angle_brackets = FALSE;
 421 BOOL    strip_trailing_dot     = FALSE;
 422 BOOL    syslog_duplication     = TRUE;
 423 BOOL    syslog_pid             = TRUE;
 424 BOOL    syslog_timestamp       = TRUE;
 425 BOOL    system_filter_gid_set  = FALSE;
 426 BOOL    system_filter_uid_set  = FALSE;
 427
 428 BOOL    tcp_nodelay            = TRUE;
 429 BOOL    write_rejectlog        = TRUE;
 430
 431 /******************************************************************************/
 432
 433 header_line *acl_added_headers = NULL;
 434 tree_node *acl_anchor          = NULL;
 435 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 436                                   NULL, NULL, NULL, NULL};
 437 int     acl_narg               = 0;
 438
 439 int     acl_level              = 0;
 440
 441 uschar *acl_not_smtp           = NULL;
 442 #ifdef WITH_CONTENT_SCAN
 443 uschar *acl_not_smtp_mime      = NULL;
 444 #endif
 445 uschar *acl_not_smtp_start     = NULL;
 446 uschar *acl_removed_headers    = NULL;
 447 uschar *acl_smtp_auth          = NULL;
 448 uschar *acl_smtp_connect       = NULL;
 449 uschar *acl_smtp_data          = NULL;
 450 #ifndef DISABLE_PRDR
 451 uschar *acl_smtp_data_prdr     = US"accept";
 452 #endif
 453 #ifndef DISABLE_DKIM
 454 uschar *acl_smtp_dkim          = NULL;
 455 #endif
 456 uschar *acl_smtp_etrn          = NULL;
 457 uschar *acl_smtp_expn          = NULL;
 458 uschar *acl_smtp_helo          = NULL;
 459 uschar *acl_smtp_mail          = NULL;
 460 uschar *acl_smtp_mailauth      = NULL;
 461 #ifdef WITH_CONTENT_SCAN
 462 uschar *acl_smtp_mime          = NULL;
 463 #endif
 464 uschar *acl_smtp_notquit       = NULL;
 465 uschar *acl_smtp_predata       = NULL;
 466 uschar *acl_smtp_quit          = NULL;
 467 uschar *acl_smtp_rcpt          = NULL;
 468 uschar *acl_smtp_starttls      = NULL;
 469 uschar *acl_smtp_vrfy          = NULL;
 470 #ifndef DISABLE_WELLKNOWN
 471 uschar *acl_smtp_wellknown     = NULL;
 472 #endif
 473
 474 tree_node *acl_var_c           = NULL;
 475 tree_node *acl_var_m           = NULL;
 476 uschar *acl_verify_message     = NULL;
 477 string_item *acl_warn_logged   = NULL;
 478
 479 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 480 error codes (only those used) */
 481
 482 uschar *acl_wherenames[]       = { [ACL_WHERE_RCPT] =           US"RCPT",
 483                                    [ACL_WHERE_MAIL] =           US"MAIL",
 484                                    [ACL_WHERE_PREDATA] =        US"PREDATA",
 485                                    [ACL_WHERE_MIME] =           US"MIME",
 486                                    [ACL_WHERE_DKIM] =           US"DKIM",
 487                                    [ACL_WHERE_DATA] =           US"DATA",
 488 #ifndef DISABLE_PRDR
 489                                    [ACL_WHERE_PRDR] =           US"PRDR",
 490 #endif
 491                                    [ACL_WHERE_NOTSMTP] =        US"non-SMTP",
 492                                    [ACL_WHERE_AUTH] =           US"AUTH",
 493                                    [ACL_WHERE_CONNECT] =        US"connection",
 494                                    [ACL_WHERE_ETRN] =           US"ETRN",
 495                                    [ACL_WHERE_EXPN] =           US"EXPN",
 496                                    [ACL_WHERE_HELO] =           US"EHLO or HELO",
 497                                    [ACL_WHERE_MAILAUTH] =       US"MAILAUTH",
 498                                    [ACL_WHERE_NOTSMTP_START] =  US"non-SMTP-start",
 499                                    [ACL_WHERE_NOTQUIT] =        US"NOTQUIT",
 500                                    [ACL_WHERE_QUIT] =           US"QUIT",
 501                                    [ACL_WHERE_STARTTLS] =       US"STARTTLS",
 502                                    [ACL_WHERE_VRFY] =           US"VRFY",
 503 #ifndef DISABLE_WELLKNOWN
 504                                    [ACL_WHERE_WELLKNOWN] =      US"WELLKNOWN",
 505 #endif
 506                                    [ACL_WHERE_DELIVERY] =       US"delivery",
 507                                    [ACL_WHERE_UNKNOWN] =        US"unknown"
 508                                  };
 509
 510 uschar *acl_wherecodes[]       = { [ACL_WHERE_RCPT] =   US"550",
 511                                    [ACL_WHERE_MAIL] =   US"550",
 512                                    [ACL_WHERE_PREDATA] = US"550",
 513                                    [ACL_WHERE_MIME] =   US"550",
 514                                    [ACL_WHERE_DKIM] =   US"550",
 515                                    [ACL_WHERE_DATA] =   US"550",
 516 #ifndef DISABLE_PRDR
 517                                    [ACL_WHERE_PRDR] =   US"550",
 518 #endif
 519                                    [ACL_WHERE_AUTH] =   US"503",
 520                                    [ACL_WHERE_CONNECT] = US"550",
 521                                    [ACL_WHERE_ETRN] =   US"458",
 522                                    [ACL_WHERE_EXPN] =   US"550",
 523                                    [ACL_WHERE_HELO] =   US"550",
 524                                    [ACL_WHERE_STARTTLS] = US"550",
 525 #ifndef DISABLE_WELLKNOWN
 526                                    [ACL_WHERE_WELLKNOWN] =US"550",
 527 #endif
 528                                    [ACL_WHERE_VRFY] =   US"252",
 529                                  };
 530
 531 uschar *add_environment        = NULL;
 532 address_item  *addr_duplicate  = NULL;
 533
 534 address_item address_defaults = {
 535   .next =               NULL,
 536   .parent =             NULL,
 537   .first =              NULL,
 538   .dupof =              NULL,
 539   .start_router =       NULL,
 540   .router =             NULL,
 541   .transport =          NULL,
 542   .host_list =          NULL,
 543   .host_used =          NULL,
 544   .fallback_hosts =     NULL,
 545   .reply =              NULL,
 546   .retries =            NULL,
 547   .address =            NULL,
 548   .unique =             NULL,
 549   .cc_local_part =      NULL,
 550   .lc_local_part =      NULL,
 551   .local_part =         NULL,
 552   .prefix =             NULL,
 553   .prefix_v =           NULL,
 554   .suffix =             NULL,
 555   .suffix_v =           NULL,
 556   .domain =             NULL,
 557   .address_retry_key =  NULL,
 558   .domain_retry_key =   NULL,
 559   .current_dir =        NULL,
 560   .home_dir =           NULL,
 561   .message =            NULL,
 562   .user_message =       NULL,
 563   .onetime_parent =     NULL,
 564   .pipe_expandn =       NULL,
 565   .return_filename =    NULL,
 566   .self_hostname =      NULL,
 567   .shadow_message =     NULL,
 568 #ifndef DISABLE_TLS
 569   .cipher =             NULL,
 570   .ourcert =            NULL,
 571   .peercert =           NULL,
 572   .peerdn =             NULL,
 573   .ocsp =               OCSP_NOT_REQ,
 574 #endif
 575 #ifdef EXPERIMENTAL_DSN_INFO
 576   .smtp_greeting =      NULL,
 577   .helo_response =      NULL,
 578 #endif
 579   .authenticator =      NULL,
 580   .auth_id =            NULL,
 581   .auth_sndr =          NULL,
 582   .dsn_orcpt =          NULL,
 583   .dsn_flags =          0,
 584   .dsn_aware =          0,
 585   .uid =                (uid_t)(-1),
 586   .gid =                (gid_t)(-1),
 587   .flags =              { 0 },
 588   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 589   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 590   .mode =               -1,
 591   .more_errno =         0,
 592   .delivery_time =      {.tv_sec = 0, .tv_usec = 0},
 593   .basic_errno =        ERRNO_UNKNOWNERROR,
 594   .child_count =        0,
 595   .return_file =        -1,
 596   .special_action =     SPECIAL_NONE,
 597   .transport_return =   DEFER,
 598   .prop = {                                     /* fields that are propagated to children */
 599     .address_data =     NULL,
 600     .domain_data =      NULL,
 601     .localpart_data =   NULL,
 602     .errors_address =   NULL,
 603     .extra_headers =    NULL,
 604     .remove_headers =   NULL,
 605     .variables =        NULL,
 606     .ignore_error =     FALSE,
 607 #ifdef SUPPORT_I18N
 608     .utf8_msg =         FALSE,
 609     .utf8_downcvt =     FALSE,
 610     .utf8_downcvt_maybe = FALSE
 611 #endif
 612   }
 613 };
 614
 615 const uschar *address_file           = NULL;
 616 const uschar *address_pipe           = NULL;
 617 tree_node *addresslist_anchor  = NULL;
 618 int     addresslist_count      = 0;
 619 gid_t  *admin_groups           = NULL;
 620
 621 #ifdef EXPERIMENTAL_ARC
 622 struct arc_set *arc_received    = NULL;
 623 int     arc_received_instance   = 0;
 624 int     arc_oldest_pass         = 0;
 625 const uschar *arc_state         = NULL;
 626 const uschar *arc_state_reason  = NULL;
 627 #endif
 628
 629 uschar *authenticated_fail_id  = NULL;
 630 uschar *authenticated_id       = NULL;
 631 uschar *authenticated_sender   = NULL;
 632 auth_instance  *auths          = NULL;
 633 uschar *auth_advertise_hosts   = US"*";
 634 auth_instance auth_defaults    = {
 635     .next =             NULL,
 636     .name =             NULL,
 637     .info =             NULL,
 638     .options_block =    NULL,
 639     .driver_name =      NULL,
 640     .advertise_condition = NULL,
 641     .client_condition = NULL,
 642     .public_name =      NULL,
 643     .set_id =           NULL,
 644     .set_client_id =    NULL,
 645     .mail_auth_condition = NULL,
 646     .server_debug_string = NULL,
 647     .server_condition = NULL,
 648     .client =           FALSE,
 649     .server =           FALSE,
 650     .advertised =       FALSE
 651 };
 652
 653 uschar *auth_defer_msg         = US"reason not recorded";
 654 uschar *auth_defer_user_msg    = US"";
 655 const uschar *auth_vars[AUTH_VARS];
 656 uschar *authenticator_name     = NULL;
 657 int     auto_thaw              = 0;
 658 #ifdef WITH_CONTENT_SCAN
 659 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 660 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 661 #endif
 662
 663 #if BASE_62 == 62
 664 uschar *base62_chars=
 665     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 666 #else
 667 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 668 #endif
 669
 670 uschar *bi_command             = NULL;
 671 uschar *big_buffer             = NULL;
 672 int     big_buffer_size        = BIG_BUFFER_SIZE;
 673 #ifdef EXPERIMENTAL_BRIGHTMAIL
 674 uschar *bmi_alt_location       = NULL;
 675 uschar *bmi_base64_tracker_verdict = NULL;
 676 uschar *bmi_base64_verdict     = NULL;
 677 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 678 int     bmi_deliver            = 1;
 679 int     bmi_run                = 0;
 680 uschar *bmi_verdicts           = NULL;
 681 #endif
 682 int     bsmtp_transaction_linecount = 0;
 683 int     body_8bitmime          = 0;
 684 int     body_linecount         = 0;
 685 int     body_zerocount         = 0;
 686 uschar *bounce_message_file    = NULL;
 687 uschar *bounce_message_text    = NULL;
 688 const uschar *bounce_recipient = NULL;
 689 int     bounce_return_linesize_limit = 998;
 690 int     bounce_return_size_limit = 100*1024;
 691 uschar *bounce_sender_authentication = NULL;
 692
 693 uschar *callout_address        = NULL;
 694 int     callout_cache_domain_positive_expire = 7*24*60*60;
 695 int     callout_cache_domain_negative_expire = 3*60*60;
 696 int     callout_cache_positive_expire = 24*60*60;
 697 int     callout_cache_negative_expire = 2*60*60;
 698 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 699 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 700 int     check_log_inodes       = 100;
 701 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 702 int     check_spool_inodes     = 100;
 703 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 704
 705 uschar *chunking_advertise_hosts = US"*";
 706 unsigned chunking_datasize     = 0;
 707 unsigned chunking_data_left    = 0;
 708 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 709 const pcre2_code *regex_CHUNKING     = NULL;
 710
 711 #ifndef DISABLE_ESMTP_LIMITS
 712 const pcre2_code *regex_LIMITS        = NULL;
 713 #endif
 714
 715 uschar *client_authenticator   = NULL;
 716 uschar *client_authenticated_id = NULL;
 717 uschar *client_authenticated_sender = NULL;
 718 #ifndef DISABLE_CLIENT_CMD_LOG
 719 gstring *client_cmd_log        = NULL;
 720 #endif
 721 int     clmacro_count          = 0;
 722 uschar *clmacros[MAX_CLMACROS];
 723 FILE   *config_file            = NULL;
 724 const uschar *config_filename  = NULL;
 725 int     config_lineno          = 0;
 726 #ifdef CONFIGURE_GROUP
 727 gid_t   config_gid             = CONFIGURE_GROUP;
 728 #else
 729 gid_t   config_gid             = 0;
 730 #endif
 731 const uschar * config_main_filelist = US CONFIGURE_FILE
 732                          "\0<-----------Space to patch configure_filename->";
 733 uschar *config_main_filename   = NULL;
 734 uschar *config_main_directory  = NULL;
 735
 736 #ifdef CONFIGURE_OWNER
 737 uid_t   config_uid             = CONFIGURE_OWNER;
 738 #else
 739 uid_t   config_uid             = 0;
 740 #endif
 741
 742 uint64_t connection_id         = 0L;
 743 int     connection_max_messages= -1;
 744 uschar *continue_proxy_cipher  = NULL;
 745 BOOL    continue_proxy_dane    = FALSE;
 746 uschar *continue_proxy_sni     = NULL;
 747 uschar *continue_hostname      = NULL;
 748 uschar *continue_host_address  = NULL;
 749 uschar  continue_next_id[MESSAGE_ID_LENGTH +1] = {[0]='\0'};
 750 int     continue_sequence      = 1;
 751 uschar *continue_transport     = NULL;
 752 #ifndef DISABLE_ESMTP_LIMITS
 753 unsigned continue_limit_mail   = 0;
 754 unsigned continue_limit_rcpt   = 0;
 755 unsigned continue_limit_rcptdom= 0;
 756 #endif
 757
 758 uschar *csa_status             = NULL;
 759 cut_t   cutthrough = {
 760   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 761   .delivery =           FALSE,                          /* when to attempt */
 762   .defer_pass =         FALSE,                          /* on defer: spool locally */
 763   .is_tls =             FALSE,                          /* not a TLS conn yet */
 764   .cctx =               {.sock = -1},                   /* open connection */
 765   .nrcpt =              0,                              /* number of addresses */
 766 };
 767
 768 int     daemon_notifier_fd     = -1;
 769 uschar *daemon_smtp_port       = US"smtp";
 770 int     daemon_startup_retries = 9;
 771 int     daemon_startup_sleep   = 30;
 772
 773 #ifdef EXPERIMENTAL_DCC
 774 uschar *dcc_header             = NULL;
 775 uschar *dcc_result             = NULL;
 776 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 777 uschar *dccifd_options         = US"header";
 778 #endif
 779
 780 int     debug_fd               = -1;
 781 FILE   *debug_file             = NULL;
 782 int     debug_notall[]         = {
 783   Di_memory,
 784   Di_noutf8,
 785   -1
 786 };
 787 bit_table debug_options[]      = { /* must be in alphabetical order and use
 788                                  only the enum values from macro.h */
 789   BIT_TABLE(D, acl),
 790   BIT_TABLE(D, all),
 791   BIT_TABLE(D, auth),
 792   BIT_TABLE(D, deliver),
 793   BIT_TABLE(D, dns),
 794   BIT_TABLE(D, dnsbl),
 795   BIT_TABLE(D, exec),
 796   BIT_TABLE(D, expand),
 797   BIT_TABLE(D, filter),
 798   BIT_TABLE(D, hints_lookup),
 799   BIT_TABLE(D, host_lookup),
 800   BIT_TABLE(D, ident),
 801   BIT_TABLE(D, interface),
 802   BIT_TABLE(D, lists),
 803   BIT_TABLE(D, load),
 804   BIT_TABLE(D, local_scan),
 805   BIT_TABLE(D, lookup),
 806   BIT_TABLE(D, memory),
 807   BIT_TABLE(D, noutf8),
 808   BIT_TABLE(D, pid),
 809   BIT_TABLE(D, process_info),
 810   BIT_TABLE(D, queue_run),
 811   BIT_TABLE(D, receive),
 812   BIT_TABLE(D, resolver),
 813   BIT_TABLE(D, retry),
 814   BIT_TABLE(D, rewrite),
 815   BIT_TABLE(D, route),
 816   BIT_TABLE(D, timestamp),
 817   BIT_TABLE(D, tls),
 818   BIT_TABLE(D, transport),
 819   BIT_TABLE(D, uid),
 820   BIT_TABLE(D, verify),
 821 };
 822 int      debug_options_count    = nelem(debug_options);
 823 uschar   debuglog_name[LOG_NAME_SIZE] = {0};
 824 unsigned debug_pretrigger_bsize = 0;
 825 uschar * debug_pretrigger_buf   = NULL;
 826 unsigned int debug_selector     = 0;
 827
 828 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 829 uschar *delay_warning_condition=
 830   US"${if or {"
 831             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 832             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 833             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 834             "} {no}{yes}}";
 835 uschar *deliver_address_data   = NULL;
 836 int     deliver_datafile       = -1;
 837 const uschar *deliver_domain   = NULL;
 838 uschar *deliver_domain_data    = NULL;
 839 const uschar *deliver_domain_orig = NULL;
 840 const uschar *deliver_domain_parent = NULL;
 841 time_t  deliver_frozen_at      = 0;
 842 uschar *deliver_home           = NULL;
 843 const uschar *deliver_host     = NULL;
 844 const uschar *deliver_host_address = NULL;
 845 int     deliver_host_port      = 0;
 846 uschar *deliver_in_buffer      = NULL;
 847 ino_t   deliver_inode          = 0;
 848 const uschar *deliver_localpart= NULL;
 849 uschar *deliver_localpart_data = NULL;
 850 const uschar *deliver_localpart_orig = NULL;
 851 const uschar *deliver_localpart_parent = NULL;
 852 const uschar *deliver_localpart_prefix = NULL;
 853 const uschar *deliver_localpart_prefix_v = NULL;
 854 const uschar *deliver_localpart_suffix = NULL;
 855 const uschar *deliver_localpart_suffix_v = NULL;
 856 uschar *deliver_out_buffer     = NULL;
 857 int     deliver_queue_load_max = -1;
 858 address_item  *deliver_recipients = NULL;
 859 uschar *deliver_selectstring   = NULL;
 860 uschar *deliver_selectstring_sender = NULL;
 861
 862 #ifndef DISABLE_DKIM
 863 unsigned dkim_collect_input      = 0;
 864 uschar *dkim_cur_signer          = NULL;
 865 int     dkim_key_length          = 0;
 866 void   *dkim_signatures          = NULL;
 867 uschar *dkim_signers             = NULL;
 868 uschar *dkim_signing_domain      = NULL;
 869 uschar *dkim_signing_selector    = NULL;
 870 gstring *dkim_signing_record     = NULL;
 871 uschar *dkim_verify_hashes       = US"sha256:sha512";
 872 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 873 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 874 BOOL    dkim_verify_minimal      = FALSE;
 875 uschar *dkim_verify_overall      = NULL;
 876 uschar *dkim_verify_signers      = US"$dkim_signers";
 877 uschar *dkim_verify_status       = NULL;
 878 uschar *dkim_verify_reason       = NULL;
 879 #endif
 880 #ifdef SUPPORT_DMARC
 881 uschar *dmarc_domain_policy     = NULL;
 882 uschar *dmarc_forensic_sender   = NULL;
 883 uschar *dmarc_history_file      = NULL;
 884 uschar *dmarc_status            = NULL;
 885 uschar *dmarc_status_text       = NULL;
 886 uschar *dmarc_tld_file          = NULL;
 887 uschar *dmarc_used_domain       = NULL;
 888 #endif
 889
 890 uschar *dns_again_means_nonexist = NULL;
 891 int     dns_csa_search_limit   = 5;
 892 int     dns_cname_loops        = 1;
 893 #ifdef SUPPORT_DANE
 894 int     dns_dane_ok            = -1;
 895 #endif
 896 uschar *dns_ipv4_lookup        = NULL;
 897 int     dns_retrans            = 0;
 898 int     dns_retry              = 0;
 899 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 900 uschar *dns_trust_aa           = NULL;
 901 int     dns_use_edns0          = -1; /* <0 = not coerced */
 902 uschar *dnslist_domain         = NULL;
 903 uschar *dnslist_matched        = NULL;
 904 uschar *dnslist_text           = NULL;
 905 uschar *dnslist_value          = NULL;
 906 tree_node *domainlist_anchor   = NULL;
 907 int     domainlist_count       = 0;
 908 const uschar *driver_srcfile   = NULL;
 909 int     driver_srcline         = 0;
 910 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 911 unsigned int dtrigger_selector = 0;
 912
 913 int     errno_quota            = ERRNO_QUOTA;
 914 uschar *errors_copy            = NULL;
 915 int     error_handling         = ERRORS_SENDER;
 916 uschar *errors_reply_to        = NULL;
 917 int     errors_sender_rc       = EXIT_FAILURE;
 918 #ifndef DISABLE_EVENT
 919 uschar *event_action           = NULL;  /* expansion for delivery events */
 920 const uschar *event_data       = NULL;  /* auxiliary data variable for event */
 921 int     event_defer_errno      = 0;
 922 const uschar *event_name       = NULL;  /* event name variable */
 923 #endif
 924
 925
 926 gid_t   exim_gid               = EXIM_GID;
 927 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 928                         "\0<---------------Space to patch exim_path->";
 929 uid_t   exim_uid               = EXIM_UID;
 930 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 931 int     expand_forbid          = 0;
 932 int     expand_nlength[EXPAND_MAXN+1];
 933 int     expand_nmax            = -1;
 934 const uschar *expand_nstring[EXPAND_MAXN+1];
 935 uschar *expand_string_message;
 936 uschar *extra_local_interfaces = NULL;
 937
 938 int     fake_response          = OK;
 939 uschar *fake_response_text     = US"Your message has been rejected but is "
 940                                    "being kept for evaluation.\nIf it was a "
 941                                    "legitimate message, it may still be "
 942                                    "delivered to the target recipient(s).";
 943 int     filter_n[FILTER_VARIABLE_COUNT];
 944 int     filter_sn[FILTER_VARIABLE_COUNT];
 945 int     filter_test            = FTEST_NONE;
 946 const uschar * filter_test_sfile = NULL;
 947 const uschar * filter_test_ufile = NULL;
 948 uschar *filter_thisaddress     = NULL;
 949 int     finduser_retries       = 0;
 950 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 951 uschar *freeze_tell            = NULL;
 952 uschar *freeze_tell_config     = NULL;
 953 uschar *fudged_queue_times     = US"";
 954
 955 uschar *gecos_name             = NULL;
 956 uschar *gecos_pattern          = NULL;
 957 rewrite_rule  *global_rewrite_rules = NULL;
 958
 959 volatile sig_atomic_t had_command_timeout = 0;
 960 volatile sig_atomic_t had_command_sigterm = 0;
 961 volatile sig_atomic_t had_data_timeout    = 0;
 962 volatile sig_atomic_t had_data_sigint     = 0;
 963 const uschar *headers_charset  = US HEADERS_CHARSET;
 964 int     header_insert_maxlen   = 64 * 1024;
 965 header_line  *header_last      = NULL;
 966 header_line  *header_list      = NULL;
 967 int     header_maxsize         = HEADER_MAXSIZE;
 968 int     header_line_maxsize    = 0;
 969
 970 header_name header_names[] = {
 971   /* name               len     allow_resent    htype */
 972   { US"bcc",            3,      TRUE,           htype_bcc },
 973   { US"cc",             2,      TRUE,           htype_cc },
 974   { US"date",           4,      TRUE,           htype_date },
 975   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 976   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 977   { US"from",           4,      TRUE,           htype_from },
 978   { US"message-id",    10,      TRUE,           htype_id },
 979   { US"received",       8,      FALSE,          htype_received },
 980   { US"reply-to",       8,      FALSE,          htype_reply_to },
 981   { US"return-path",   11,      FALSE,          htype_return_path },
 982   { US"sender",         6,      TRUE,           htype_sender },
 983   { US"subject",        7,      FALSE,          htype_subject },
 984   { US"to",             2,      TRUE,           htype_to }
 985 };
 986
 987 int header_names_size          = nelem(header_names);
 988
 989 uschar *helo_accept_junk_hosts = NULL;
 990 uschar *helo_allow_chars       = US"";
 991 uschar *helo_lookup_domains    = US"@ : @[]";
 992 uschar *helo_try_verify_hosts  = NULL;
 993 uschar *helo_verify_hosts      = NULL;
 994 const uschar *hex_digits       = CUS"0123456789abcdef";
 995 uschar *hold_domains           = NULL;
 996 uschar *host_data              = NULL;
 997 uschar *host_lookup            = NULL;
 998 uschar *host_lookup_order      = US"bydns:byaddr";
 999 uschar *host_lookup_msg        = US"";
1000 int     host_number            = 0;
1001 uschar *host_number_string     = NULL;
1002 uschar *host_reject_connection = NULL;
1003 uschar *hosts_connection_nolog = NULL;
1004 #ifdef SUPPORT_PROXY
1005 uschar *hosts_proxy            = NULL;
1006 #endif
1007 uschar *hosts_treat_as_local   = NULL;
1008 uschar *hosts_require_helo     = US"*";
1009 #ifdef EXPERIMENTAL_XCLIENT
1010 uschar *hosts_xclient          = NULL;
1011 #endif
1012 tree_node *hostlist_anchor     = NULL;
1013 int     hostlist_count         = 0;
1014
1015
1016 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1017 uschar *ignore_fromline_hosts  = NULL;
1018 int     inetd_wait_timeout     = -1;
1019 uschar *initial_cwd            = NULL;
1020 uschar *interface_address      = NULL;
1021 int     interface_port         = -1;
1022 uschar *iterate_item           = NULL;
1023
1024 int     journal_fd             = -1;
1025
1026 uschar *keep_environment       = NULL;
1027
1028 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1029
1030 uschar *eldap_dn               = NULL;
1031 const uschar *letter_digit_hyphen_dot =
1032     US"abcdefghijklmnopqrstuvwxyz"
1033       ".-0123456789"
1034       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1035 #ifndef DISABLE_ESMTP_LIMITS
1036 uschar *limits_advertise_hosts = US"*";
1037 #endif
1038 int     load_average           = -2;
1039 uschar *local_from_prefix      = NULL;
1040 uschar *local_from_suffix      = NULL;
1041
1042 #if HAVE_IPV6
1043 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1044 #else
1045 uschar *local_interfaces       = US"0.0.0.0";
1046 #endif
1047
1048 #ifdef HAVE_LOCAL_SCAN
1049 uschar *local_scan_data        = NULL;
1050 int     local_scan_timeout     = 5*60;
1051 #endif
1052 gid_t   local_user_gid         = (gid_t)(-1);
1053 uid_t   local_user_uid         = (uid_t)(-1);
1054
1055 tree_node *localpartlist_anchor= NULL;
1056 int     localpartlist_count    = 0;
1057 uschar *log_buffer             = NULL;
1058
1059 int     log_default[]          = { /* for initializing log_selector */
1060   Li_acl_warn_skipped,
1061   Li_connection_reject,
1062   Li_delay_delivery,
1063   Li_dkim,
1064   Li_dnslist_defer,
1065   Li_etrn,
1066   Li_host_lookup_failed,
1067   Li_lost_incoming_connection,
1068   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1069   Li_msg_id,
1070   Li_queue_run,
1071   Li_queue_time_exclusive,
1072   Li_rejected_header,
1073   Li_retry_defer,
1074   Li_sender_verify_fail,
1075   Li_size_reject,
1076   Li_skip_delivery,
1077   Li_smtp_confirmation,
1078   Li_tls_certificate_verified,
1079   Li_tls_cipher,
1080   -1
1081 };
1082
1083 uschar *log_file_path          = US LOG_FILE_PATH
1084                            "\0<--------------Space to patch log_file_path->";
1085
1086 int     log_notall[]           = {
1087   -1
1088 };
1089 bit_table log_options[]        = { /* must be in alphabetical order,
1090                                 with definitions from enum logbit. */
1091   BIT_TABLE(L, 8bitmime),
1092   BIT_TABLE(L, acl_warn_skipped),
1093   BIT_TABLE(L, address_rewrite),
1094   BIT_TABLE(L, all),
1095   BIT_TABLE(L, all_parents),
1096   BIT_TABLE(L, arguments),
1097   BIT_TABLE(L, connection_id),
1098   BIT_TABLE(L, connection_reject),
1099   BIT_TABLE(L, delay_delivery),
1100   BIT_TABLE(L, deliver_time),
1101   BIT_TABLE(L, delivery_size),
1102 #ifndef DISABLE_DKIM
1103   BIT_TABLE(L, dkim),
1104   BIT_TABLE(L, dkim_verbose),
1105 #endif
1106   BIT_TABLE(L, dnslist_defer),
1107   BIT_TABLE(L, dnssec),
1108   BIT_TABLE(L, etrn),
1109   BIT_TABLE(L, host_lookup_failed),
1110   BIT_TABLE(L, ident_timeout),
1111   BIT_TABLE(L, incoming_interface),
1112   BIT_TABLE(L, incoming_port),
1113   BIT_TABLE(L, lost_incoming_connection),
1114   BIT_TABLE(L, millisec),
1115   BIT_TABLE(L, msg_id),
1116   BIT_TABLE(L, msg_id_created),
1117   BIT_TABLE(L, outgoing_interface),
1118   BIT_TABLE(L, outgoing_port),
1119   BIT_TABLE(L, pid),
1120   BIT_TABLE(L, pipelining),
1121   BIT_TABLE(L, protocol_detail),
1122 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1123   BIT_TABLE(L, proxy),
1124 #endif
1125   BIT_TABLE(L, queue_run),
1126   BIT_TABLE(L, queue_time),
1127   BIT_TABLE(L, queue_time_exclusive),
1128   BIT_TABLE(L, queue_time_overall),
1129   BIT_TABLE(L, receive_time),
1130   BIT_TABLE(L, received_recipients),
1131   BIT_TABLE(L, received_sender),
1132   BIT_TABLE(L, rejected_header),
1133   { US"rejected_headers", Li_rejected_header },
1134   BIT_TABLE(L, retry_defer),
1135   BIT_TABLE(L, return_path_on_delivery),
1136   BIT_TABLE(L, sender_on_delivery),
1137   BIT_TABLE(L, sender_verify_fail),
1138   BIT_TABLE(L, size_reject),
1139   BIT_TABLE(L, skip_delivery),
1140   BIT_TABLE(L, smtp_confirmation),
1141   BIT_TABLE(L, smtp_connection),
1142   BIT_TABLE(L, smtp_incomplete_transaction),
1143   BIT_TABLE(L, smtp_mailauth),
1144   BIT_TABLE(L, smtp_no_mail),
1145   BIT_TABLE(L, smtp_protocol_error),
1146   BIT_TABLE(L, smtp_syntax_error),
1147   BIT_TABLE(L, subject),
1148   BIT_TABLE(L, tls_certificate_verified),
1149   BIT_TABLE(L, tls_cipher),
1150   BIT_TABLE(L, tls_peerdn),
1151   BIT_TABLE(L, tls_resumption),
1152   BIT_TABLE(L, tls_sni),
1153   BIT_TABLE(L, unknown_in_list),
1154 };
1155 int     log_options_count      = nelem(log_options);
1156
1157 int     log_reject_target      = 0;
1158 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1159 uschar *log_selector_string    = NULL;
1160 FILE   *log_stderr             = NULL;
1161 uschar *login_sender_address   = NULL;
1162 uschar *lookup_dnssec_authenticated = NULL;
1163 int     lookup_open_max        = 25;
1164 uschar *lookup_value           = NULL;
1165
1166 macro_item *macros_user        = NULL;
1167 uschar *mailstore_basename     = NULL;
1168 #ifdef WITH_CONTENT_SCAN
1169 uschar *malware_name           = NULL;  /* Virus Name */
1170 #endif
1171 int     max_received_linelength= 0;
1172 int     max_username_length    = 0;
1173 int     message_age            = 0;
1174 uschar *message_body           = NULL;
1175 uschar *message_body_end       = NULL;
1176 int     message_body_size      = 0;
1177 int     message_body_visible   = 500;
1178 int     message_ended          = END_NOTSTARTED;
1179 uschar *message_headers        = NULL;
1180 uschar *message_id;
1181 uschar *message_id_domain      = NULL;
1182 uschar *message_id_text        = NULL;
1183 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1184 uschar *message_id_external;
1185 int     message_linecount      = 0;
1186 int     message_size           = 0;
1187 uschar *message_size_limit     = US"50M";
1188 #ifdef SUPPORT_I18N
1189 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1190 #endif
1191 uschar  message_subdir[2]      = { 0, 0 };
1192 const uschar *message_reference= NULL;
1193
1194 /* MIME ACL expandables */
1195 #ifdef WITH_CONTENT_SCAN
1196 int     mime_anomaly_level     = 0;
1197 const uschar *mime_anomaly_text      = NULL;
1198 uschar *mime_boundary          = NULL;
1199 uschar *mime_charset           = NULL;
1200 uschar *mime_content_description = NULL;
1201 uschar *mime_content_disposition = NULL;
1202 uschar *mime_content_id        = NULL;
1203 unsigned int mime_content_size = 0;
1204 uschar *mime_content_transfer_encoding = NULL;
1205 uschar *mime_content_type      = NULL;
1206 uschar *mime_decoded_filename  = NULL;
1207 uschar *mime_filename          = NULL;
1208 int     mime_is_multipart      = 0;
1209 int     mime_is_coverletter    = 0;
1210 int     mime_is_rfc822         = 0;
1211 int     mime_part_count        = -1;
1212 #endif
1213
1214 uid_t  *never_users            = NULL;
1215 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1216
1217 const int on                   = 1;     /* for setsockopt */
1218 const int off                  = 0;
1219
1220 uid_t   original_euid;
1221 gid_t   originator_gid;
1222 uschar *originator_login       = NULL;
1223 uschar *originator_name        = NULL;
1224 uid_t   originator_uid;
1225 uschar *override_local_interfaces = NULL;
1226 const uschar *override_pid_file_path = NULL;
1227
1228 BOOL    panic_coredump         = FALSE;
1229 pcre2_general_context * pcre_gen_ctx = NULL;
1230 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1231 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1232 pcre2_general_context * pcre_mlc_ctx = NULL;
1233 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1234
1235 uschar *percent_hack_domains   = NULL;
1236 const uschar *pid_file_path    = US PID_FILE_PATH
1237                            "\0<--------------Space to patch pid_file_path->";
1238 #ifndef DISABLE_PIPE_CONNECT
1239 uschar *pipe_connect_advertise_hosts = US"*";
1240 #endif
1241 uschar *pipelining_advertise_hosts = US"*";
1242 uschar *primary_hostname       = NULL;
1243 uschar *process_info;
1244 int     process_info_len       = 0;
1245 uschar *process_log_path       = NULL;
1246 const uschar *process_purpose  = US"fresh-exec";
1247
1248 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1249 uschar *proxy_external_address = NULL;
1250 int     proxy_external_port    = 0;
1251 uschar *proxy_local_address    = NULL;
1252 int     proxy_local_port       = 0;
1253 int     proxy_protocol_timeout = 3;
1254 #endif
1255
1256 uschar *prvscheck_address      = NULL;
1257 uschar *prvscheck_keynum       = NULL;
1258 uschar *prvscheck_result       = NULL;
1259
1260
1261 qrunner *qrunners              = NULL;
1262
1263 const uschar *qualify_domain_recipient = NULL;
1264 uschar *qualify_domain_sender  = NULL;
1265 uschar *queue_domains          = NULL;
1266 int     queue_interval         = -1;
1267 uschar *queue_name             = US"";
1268 uschar *queue_name_dest        = NULL;
1269 uschar *queue_only_file        = NULL;
1270 int     queue_only_load        = -1;
1271 uschar *queue_run_max          = US"5";
1272 pid_t   queue_run_pid          = (pid_t)0;
1273 int     queue_run_pipe         = -1;
1274 unsigned queue_size            = 0;
1275 time_t  queue_size_next        = 0;
1276 uschar *queue_smtp_domains     = NULL;
1277
1278 uint32_t random_seed           = 0;
1279 tree_node *ratelimiters_cmd    = NULL;
1280 tree_node *ratelimiters_conn   = NULL;
1281 tree_node *ratelimiters_mail   = NULL;
1282 uschar *raw_active_hostname    = NULL;
1283 const uschar *raw_sender       = NULL;
1284 const uschar **raw_recipients  = NULL;
1285 int     raw_recipients_count   = 0;
1286
1287 int     rcpt_count             = 0;
1288 int     rcpt_fail_count        = 0;
1289 int     rcpt_defer_count       = 0;
1290 gid_t   real_gid;
1291 uid_t   real_uid;
1292 int     receive_linecount      = 0;
1293 int     receive_messagecount   = 0;
1294 int     receive_timeout        = 0;
1295 int     received_count         = 0;
1296 const uschar *received_for     = NULL;
1297
1298 /*  This is the default text for Received headers generated by Exim. The
1299 date  will be automatically added on the end. */
1300
1301 uschar *received_header_text   = US
1302      "Received: "
1303      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1304        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1305          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1306      "by $primary_hostname "
1307      "${if def:received_protocol {with $received_protocol }}"
1308 #ifndef DISABLE_TLS
1309      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1310      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1311 #endif
1312      "(Exim $version_number)\n\t"
1313      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1314      "id $message_exim_id"
1315      "${if def:received_for {\n\tfor $received_for}}"
1316      "\0<---------------Space to patch received_header_text->";
1317
1318 int     received_headers_max   = 30;
1319 uschar *received_protocol      = NULL;
1320 struct timeval received_time   = { 0, 0 };
1321 struct timeval received_time_complete = { 0, 0 };
1322 uschar *recipient_data         = NULL;
1323 uschar *recipient_unqualified_hosts = NULL;
1324 uschar *recipient_verify_failure = NULL;
1325 int     recipients_count       = 0;
1326 recipient_item  *recipients_list = NULL;
1327 int     recipients_list_max    = 0;
1328 uschar *recipients_max         = US"50000";
1329 int     recipients_max_expanded= 0;
1330 const pcre2_code *regex_AUTH         = NULL;
1331 const pcre2_code *regex_check_dns_names = NULL;
1332 const pcre2_code *regex_From         = NULL;
1333 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1334 const pcre2_code *regex_PIPELINING   = NULL;
1335 const pcre2_code *regex_SIZE         = NULL;
1336 #ifndef DISABLE_PIPE_CONNECT
1337 const pcre2_code *regex_EARLY_PIPE   = NULL;
1338 #endif
1339 int    regex_cachesize               = 0;
1340 const pcre2_code *regex_ismsgid      = NULL;
1341 const pcre2_code *regex_smtp_code    = NULL;
1342 const uschar *regex_vars[REGEX_VARS] = { NULL };
1343 #ifdef WHITELIST_D_MACROS
1344 const pcre2_code *regex_whitelisted_macro = NULL;
1345 #endif
1346 #ifdef WITH_CONTENT_SCAN
1347 uschar *regex_match_string     = NULL;
1348 #endif
1349 int     remote_delivery_count  = 0;
1350 int     remote_max_parallel    = 4;
1351 uschar *remote_sort_domains    = NULL;
1352 int     retry_data_expire      = 7*24*60*60;
1353 int     retry_interval_max     = 24*60*60;
1354 int     retry_maximum_timeout  = 0;        /* set from retry config */
1355 retry_config  *retries         = NULL;
1356 const uschar *return_path            = NULL;
1357 int     rewrite_existflags     = 0;
1358 uschar *rfc1413_hosts          = US"@[]";
1359 int     rfc1413_query_timeout  = 0;
1360 uid_t   root_gid               = ROOT_GID;
1361 uid_t   root_uid               = ROOT_UID;
1362
1363 router_instance  *routers  = NULL;
1364 router_instance  router_defaults = {
1365     .next =                     NULL,
1366     .name =                     NULL,
1367     .info =                     NULL,
1368     .options_block =            NULL,
1369     .driver_name =              NULL,
1370
1371     .address_data =             NULL,
1372 #ifdef EXPERIMENTAL_BRIGHTMAIL
1373     .bmi_rule =                 NULL,
1374 #endif
1375     .cannot_route_message =     NULL,
1376     .condition =                NULL,
1377     .current_directory =        NULL,
1378     .debug_string =             NULL,
1379     .domains =                  NULL,
1380     .errors_to =                NULL,
1381     .expand_gid =               NULL,
1382     .expand_uid =               NULL,
1383     .expand_more =              NULL,
1384     .expand_unseen =            NULL,
1385     .extra_headers =            NULL,
1386     .fallback_hosts =           NULL,
1387     .home_directory =           NULL,
1388     .ignore_target_hosts =      NULL,
1389     .local_parts =              NULL,
1390     .pass_router_name =         NULL,
1391     .prefix =                   NULL,
1392     .redirect_router_name =     NULL,
1393     .remove_headers =           NULL,
1394     .require_files =            NULL,
1395     .router_home_directory =    NULL,
1396     .self =                     US"freeze",
1397     .senders =                  NULL,
1398     .suffix =                   NULL,
1399     .translate_ip_address =     NULL,
1400     .transport_name =           NULL,
1401
1402     .address_test =             TRUE,
1403 #ifdef EXPERIMENTAL_BRIGHTMAIL
1404     .bmi_deliver_alternate =    FALSE,
1405     .bmi_deliver_default =      FALSE,
1406     .bmi_dont_deliver =         FALSE,
1407 #endif
1408     .expn =                     TRUE,
1409     .caseful_local_part =       FALSE,
1410     .check_local_user =         FALSE,
1411     .disable_logging =          FALSE,
1412     .fail_verify_recipient =    FALSE,
1413     .fail_verify_sender =       FALSE,
1414     .gid_set =                  FALSE,
1415     .initgroups =               FALSE,
1416     .log_as_local =             TRUE_UNSET,
1417     .more =                     TRUE,
1418     .pass_on_timeout =          FALSE,
1419     .prefix_optional =          FALSE,
1420     .repeat_use =               TRUE,
1421     .retry_use_local_part =     TRUE_UNSET,
1422     .same_domain_copy_routing = FALSE,
1423     .self_rewrite =             FALSE,
1424     .set =                      NULL,
1425     .suffix_optional =          FALSE,
1426     .verify_only =              FALSE,
1427     .verify_recipient =         TRUE,
1428     .verify_sender =            TRUE,
1429     .uid_set =                  FALSE,
1430     .unseen =                   FALSE,
1431     .dsn_lasthop =              FALSE,
1432
1433     .self_code =                self_freeze,
1434     .uid =                      (uid_t)(-1),
1435     .gid =                      (gid_t)(-1),
1436
1437     .fallback_hostlist =        NULL,
1438     .transport =                NULL,
1439     .pass_router =              NULL,
1440     .redirect_router =          NULL,
1441
1442     .dnssec =                   { .request= US"*", .require=NULL },
1443 };
1444
1445 uschar *router_name            = NULL;
1446 tree_node *router_var          = NULL;
1447
1448 ip_address_item *running_interfaces = NULL;
1449
1450 /* This is a weird one. The following string gets patched in the binary by the
1451 script that sets up a copy of Exim for running in the test harness. It seems
1452 that compilers are now clever, and share constant strings if they can.
1453 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1454 make use of the end of this string in order to save space. So the patching then
1455 wrecks this. We defeat this optimization by adding some additional characters
1456 onto the end of the string. */
1457
1458 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1459
1460 int     runrc                  = 0;
1461
1462 uschar *search_error_message   = NULL;
1463 uschar *self_hostname          = NULL;
1464 const uschar *sender_address   = NULL;
1465 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1466 uschar *sender_address_data    = NULL;
1467 const uschar *sender_address_unrewritten = NULL;
1468 uschar *sender_data            = NULL;
1469 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1470 uschar *sender_fullhost        = NULL;
1471 uschar *sender_helo_name       = NULL;
1472 uschar **sender_host_aliases   = &no_aliases;
1473 uschar *sender_host_address    = NULL;
1474 uschar *sender_host_authenticated = NULL;
1475 uschar *sender_host_auth_pubname  = NULL;
1476 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1477 uschar *sender_host_name       = NULL;
1478 int     sender_host_port       = 0;
1479 uschar *sender_ident           = NULL;
1480 uschar *sender_rate            = NULL;
1481 uschar *sender_rate_limit      = NULL;
1482 uschar *sender_rate_period     = NULL;
1483 uschar *sender_rcvhost         = NULL;
1484 uschar *sender_unqualified_hosts = NULL;
1485 uschar *sender_verify_failure = NULL;
1486 address_item *sender_verified_list  = NULL;
1487 address_item *sender_verified_failed = NULL;
1488 int     sender_verified_rc     = -1;
1489 uschar *sending_ip_address     = NULL;
1490 int     sending_port           = -1;
1491 SIGNAL_BOOL sigalrm_seen       = FALSE;
1492 const uschar *sigalarm_setter  = NULL;
1493 const uschar **sighup_argv     = NULL;
1494 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1495 int     smtp_accept_count      = 0;
1496 int     smtp_accept_max        = 20;
1497 int     smtp_accept_max_nonmail= 10;
1498 uschar *smtp_accept_max_nonmail_hosts = US"*";
1499 uschar *smtp_accept_max_per_connection = US"1000";
1500 uschar *smtp_accept_max_per_host = NULL;
1501 int     smtp_accept_queue      = 0;
1502 int     smtp_accept_queue_per_connection = 10;
1503 int     smtp_accept_reserve    = 0;
1504 uschar *smtp_active_hostname   = NULL;
1505 int     smtp_backlog_monitor   = 0;
1506 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1507                              "Exim $version_number $tod_full"
1508                              "\0<---------------Space to patch smtp_banner->";
1509 int     smtp_ch_index          = 0;
1510 uschar *smtp_cmd_argument      = NULL;
1511 uschar *smtp_cmd_buffer        = NULL;
1512 struct timeval smtp_connection_start  = {0,0};
1513 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1514 int     smtp_connect_backlog   = 20;
1515 double  smtp_delay_mail        = 0.0;
1516 double  smtp_delay_rcpt        = 0.0;
1517 FILE   *smtp_in                = NULL;
1518 int     smtp_listen_backlog    = 0;
1519 int     smtp_load_reserve      = -1;
1520 int     smtp_mailcmd_count     = 0;
1521 int     smtp_mailcmd_max       = -1;
1522 FILE   *smtp_out               = NULL;
1523 uschar *smtp_etrn_command      = NULL;
1524 int     smtp_max_synprot_errors= 3;
1525 int     smtp_max_unknown_commands = 3;
1526 uschar *smtp_notquit_reason    = NULL;
1527 unsigned smtp_peer_options     = 0;
1528 unsigned smtp_peer_options_wrap= 0;
1529 uschar *smtp_ratelimit_hosts   = NULL;
1530 uschar *smtp_ratelimit_mail    = NULL;
1531 uschar *smtp_ratelimit_rcpt    = NULL;
1532 uschar *smtp_read_error        = US"";
1533 int     smtp_receive_timeout   = 5*60;
1534 uschar *smtp_receive_timeout_s = NULL;
1535 uschar *smtp_reserve_hosts     = NULL;
1536 int     smtp_rlm_base          = 0;
1537 double  smtp_rlm_factor        = 0.0;
1538 int     smtp_rlm_limit         = 0;
1539 int     smtp_rlm_threshold     = INT_MAX;
1540 int     smtp_rlr_base          = 0;
1541 double  smtp_rlr_factor        = 0.0;
1542 int     smtp_rlr_limit         = 0;
1543 int     smtp_rlr_threshold     = INT_MAX;
1544 #ifdef SUPPORT_I18N
1545 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1546 #endif
1547
1548 #ifdef WITH_CONTENT_SCAN
1549 uschar *spamd_address          = US"127.0.0.1 783";
1550 uschar *spam_bar               = NULL;
1551 uschar *spam_report            = NULL;
1552 uschar *spam_action            = NULL;
1553 uschar *spam_score             = NULL;
1554 uschar *spam_score_int         = NULL;
1555 #endif
1556 #ifdef SUPPORT_SPF
1557 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1558 uschar *spf_header_comment     = NULL;
1559 uschar *spf_received           = NULL;
1560 uschar *spf_result             = NULL;
1561 uschar *spf_smtp_comment       = NULL;
1562 uschar *spf_smtp_comment_template
1563                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1564                                = US"Please%_see%_http://www.open-spf.org/Why";
1565
1566 #endif
1567
1568 FILE   *spool_data_file        = NULL;
1569 uschar *spool_directory        = US SPOOL_DIRECTORY
1570                            "\0<--------------Space to patch spool_directory->";
1571 #ifdef SUPPORT_SRS
1572 uschar *srs_recipient          = NULL;
1573 #endif
1574 int     string_datestamp_offset= -1;
1575 int     string_datestamp_length= 0;
1576 int     string_datestamp_type  = -1;
1577 const uschar *submission_domain = NULL;
1578 const uschar *submission_name  = NULL;
1579 int     syslog_facility        = LOG_MAIL;
1580 const uschar *syslog_processname= US"exim";
1581 uschar *system_filter          = NULL;
1582
1583 uschar *system_filter_directory_transport = NULL;
1584 uschar *system_filter_file_transport = NULL;
1585 uschar *system_filter_pipe_transport = NULL;
1586 uschar *system_filter_reply_transport = NULL;
1587
1588 gid_t   system_filter_gid      = 0;
1589 uid_t   system_filter_uid      = (uid_t)-1;
1590
1591 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1592 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1593 #ifdef USE_TCP_WRAPPERS
1594 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1595 #endif
1596 int     test_harness_load_avg  = 0;
1597 int     thismessage_size_limit = 0;
1598 int     timeout_frozen_after   = 0;
1599 #ifdef MEASURE_TIMING
1600 struct timeval timestamp_startup;
1601 #endif
1602
1603 transport_instance  *transports = NULL;
1604
1605 transport_instance  transport_defaults = {
1606     /* All non-mentioned elements zero/NULL/FALSE */
1607     .batch_max =                1,
1608     .multi_domain =             TRUE,
1609     .max_addresses =            US"100",
1610     .connection_max_messages =  500,
1611     .uid =                      (uid_t)(-1),
1612     .gid =                      (gid_t)(-1),
1613     .filter_timeout =           300,
1614     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1615                                                  1 nor 0 so can detect unset */
1616 };
1617
1618 int     transport_count;
1619 uschar *transport_name          = NULL;
1620 int     transport_newlines;
1621 const uschar **transport_filter_argv  = NULL;
1622 int     transport_filter_timeout;
1623 int     transport_write_timeout= 0;
1624
1625 tree_node  *tree_dns_fails     = NULL;
1626 tree_node  *tree_duplicates    = NULL;
1627 tree_node  *tree_nonrecipients = NULL;
1628 tree_node  *tree_unusable      = NULL;
1629
1630 gid_t  *trusted_groups         = NULL;
1631 uid_t  *trusted_users          = NULL;
1632 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1633
1634 uschar *unknown_login          = NULL;
1635 uschar *unknown_username       = NULL;
1636 uschar *untrusted_set_sender   = NULL;
1637
1638 /*  A regex for matching a "From_" line in an incoming message, in the form
1639
1640     From ph10 Fri Jan  5 12:35 GMT 1996
1641
1642 which  the "mail" commands send to the MTA (undocumented, of course), or in
1643 the  form
1644
1645     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1646
1647 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1648 Because  of variations in time formats, just match up to the minutes. That
1649 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1650 so  just require one digit for hours and minutes. The weekday is also absent
1651 in  some forms. */
1652
1653 uschar *uucp_from_pattern      = US
1654    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1655    "(?:"                                          /* Non-extracting bracket */
1656    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1657    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1658    ")"                                            /* End alternation */
1659    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1660
1661 uschar *uucp_from_sender       = US"$1";
1662
1663 uschar *verify_mode            = NULL;
1664 uschar *version_copyright      =
1665  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1666    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2022";
1667 uschar *version_date           = US"?";
1668 uschar *version_cnumber        = US"????";
1669 uschar *version_string         = US"?";
1670
1671 uschar *warn_message_file      = NULL;
1672 int     warning_count          = 0;
1673 const uschar *warnmsg_delay    = NULL;
1674 const uschar *warnmsg_recipients = NULL;
1675
1676 #ifndef DISABLE_WELLKNOWN
1677 uschar *wellknown_advertise_hosts = NULL;
1678 uschar *wellknown_response     = NULL;
1679 #endif
1680
1681 /*  End of globals.c */
1682 /* vi: aw ai sw=2
1683 */