src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) The Exim Maintainers 2020 - 2022 */
   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(EXPERIMETAL_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
 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 - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 478
 479 uschar *acl_wherenames[]       = { US"RCPT",
 480                                    US"MAIL",
 481                                    US"PREDATA",
 482                                    US"MIME",
 483                                    US"DKIM",
 484                                    US"DATA",
 485 #ifndef DISABLE_PRDR
 486                                    US"PRDR",
 487 #endif
 488                                    US"non-SMTP",
 489                                    US"AUTH",
 490                                    US"connection",
 491                                    US"ETRN",
 492                                    US"EXPN",
 493                                    US"EHLO or HELO",
 494                                    US"MAILAUTH",
 495                                    US"non-SMTP-start",
 496                                    US"NOTQUIT",
 497                                    US"QUIT",
 498                                    US"STARTTLS",
 499                                    US"VRFY",
 500                                    US"delivery",
 501                                    US"unknown"
 502                                  };
 503
 504 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 505                                    US"550",     /* MAIL */
 506                                    US"550",     /* PREDATA */
 507                                    US"550",     /* MIME */
 508                                    US"550",     /* DKIM */
 509                                    US"550",     /* DATA */
 510 #ifndef DISABLE_PRDR
 511                                    US"550",    /* RCPT PRDR */
 512 #endif
 513                                    US"0",       /* not SMTP; not relevant */
 514                                    US"503",     /* AUTH */
 515                                    US"550",     /* connect */
 516                                    US"458",     /* ETRN */
 517                                    US"550",     /* EXPN */
 518                                    US"550",     /* HELO/EHLO */
 519                                    US"0",       /* MAILAUTH; not relevant */
 520                                    US"0",       /* not SMTP; not relevant */
 521                                    US"0",       /* NOTQUIT; not relevant */
 522                                    US"0",       /* QUIT; not relevant */
 523                                    US"550",     /* STARTTLS */
 524                                    US"252",     /* VRFY */
 525                                    US"0",       /* delivery; not relevant */
 526                                    US"0"        /* unknown; not relevant */
 527                                  };
 528
 529 uschar *add_environment        = NULL;
 530 address_item  *addr_duplicate  = NULL;
 531
 532 address_item address_defaults = {
 533   .next =               NULL,
 534   .parent =             NULL,
 535   .first =              NULL,
 536   .dupof =              NULL,
 537   .start_router =       NULL,
 538   .router =             NULL,
 539   .transport =          NULL,
 540   .host_list =          NULL,
 541   .host_used =          NULL,
 542   .fallback_hosts =     NULL,
 543   .reply =              NULL,
 544   .retries =            NULL,
 545   .address =            NULL,
 546   .unique =             NULL,
 547   .cc_local_part =      NULL,
 548   .lc_local_part =      NULL,
 549   .local_part =         NULL,
 550   .prefix =             NULL,
 551   .prefix_v =           NULL,
 552   .suffix =             NULL,
 553   .suffix_v =           NULL,
 554   .domain =             NULL,
 555   .address_retry_key =  NULL,
 556   .domain_retry_key =   NULL,
 557   .current_dir =        NULL,
 558   .home_dir =           NULL,
 559   .message =            NULL,
 560   .user_message =       NULL,
 561   .onetime_parent =     NULL,
 562   .pipe_expandn =       NULL,
 563   .return_filename =    NULL,
 564   .self_hostname =      NULL,
 565   .shadow_message =     NULL,
 566 #ifndef DISABLE_TLS
 567   .cipher =             NULL,
 568   .ourcert =            NULL,
 569   .peercert =           NULL,
 570   .peerdn =             NULL,
 571   .ocsp =               OCSP_NOT_REQ,
 572 #endif
 573 #ifdef EXPERIMENTAL_DSN_INFO
 574   .smtp_greeting =      NULL,
 575   .helo_response =      NULL,
 576 #endif
 577   .authenticator =      NULL,
 578   .auth_id =            NULL,
 579   .auth_sndr =          NULL,
 580   .dsn_orcpt =          NULL,
 581   .dsn_flags =          0,
 582   .dsn_aware =          0,
 583   .uid =                (uid_t)(-1),
 584   .gid =                (gid_t)(-1),
 585   .flags =              { 0 },
 586   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 587   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 588   .mode =               -1,
 589   .more_errno =         0,
 590   .delivery_time =      {.tv_sec = 0, .tv_usec = 0},
 591   .basic_errno =        ERRNO_UNKNOWNERROR,
 592   .child_count =        0,
 593   .return_file =        -1,
 594   .special_action =     SPECIAL_NONE,
 595   .transport_return =   DEFER,
 596   .prop = {                                     /* fields that are propagated to children */
 597     .address_data =     NULL,
 598     .domain_data =      NULL,
 599     .localpart_data =   NULL,
 600     .errors_address =   NULL,
 601     .extra_headers =    NULL,
 602     .remove_headers =   NULL,
 603     .variables =        NULL,
 604     .ignore_error =     FALSE,
 605 #ifdef SUPPORT_I18N
 606     .utf8_msg =         FALSE,
 607     .utf8_downcvt =     FALSE,
 608     .utf8_downcvt_maybe = FALSE
 609 #endif
 610   }
 611 };
 612
 613 uschar *address_file           = NULL;
 614 uschar *address_pipe           = NULL;
 615 tree_node *addresslist_anchor  = NULL;
 616 int     addresslist_count      = 0;
 617 gid_t  *admin_groups           = NULL;
 618
 619 #ifdef EXPERIMENTAL_ARC
 620 struct arc_set *arc_received    = NULL;
 621 int     arc_received_instance   = 0;
 622 int     arc_oldest_pass         = 0;
 623 const uschar *arc_state         = NULL;
 624 const uschar *arc_state_reason  = NULL;
 625 #endif
 626
 627 uschar *authenticated_fail_id  = NULL;
 628 uschar *authenticated_id       = NULL;
 629 uschar *authenticated_sender   = NULL;
 630 auth_instance  *auths          = NULL;
 631 uschar *auth_advertise_hosts   = US"*";
 632 auth_instance auth_defaults    = {
 633     .next =             NULL,
 634     .name =             NULL,
 635     .info =             NULL,
 636     .options_block =    NULL,
 637     .driver_name =      NULL,
 638     .advertise_condition = NULL,
 639     .client_condition = NULL,
 640     .public_name =      NULL,
 641     .set_id =           NULL,
 642     .set_client_id =    NULL,
 643     .mail_auth_condition = NULL,
 644     .server_debug_string = NULL,
 645     .server_condition = NULL,
 646     .client =           FALSE,
 647     .server =           FALSE,
 648     .advertised =       FALSE
 649 };
 650
 651 uschar *auth_defer_msg         = US"reason not recorded";
 652 uschar *auth_defer_user_msg    = US"";
 653 const uschar *auth_vars[AUTH_VARS];
 654 uschar *authenticator_name     = NULL;
 655 int     auto_thaw              = 0;
 656 #ifdef WITH_CONTENT_SCAN
 657 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 658 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 659 #endif
 660
 661 #if BASE_62 == 62
 662 uschar *base62_chars=
 663     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 664 #else
 665 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 666 #endif
 667
 668 uschar *bi_command             = NULL;
 669 uschar *big_buffer             = NULL;
 670 int     big_buffer_size        = BIG_BUFFER_SIZE;
 671 #ifdef EXPERIMENTAL_BRIGHTMAIL
 672 uschar *bmi_alt_location       = NULL;
 673 uschar *bmi_base64_tracker_verdict = NULL;
 674 uschar *bmi_base64_verdict     = NULL;
 675 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 676 int     bmi_deliver            = 1;
 677 int     bmi_run                = 0;
 678 uschar *bmi_verdicts           = NULL;
 679 #endif
 680 int     bsmtp_transaction_linecount = 0;
 681 int     body_8bitmime          = 0;
 682 int     body_linecount         = 0;
 683 int     body_zerocount         = 0;
 684 uschar *bounce_message_file    = NULL;
 685 uschar *bounce_message_text    = NULL;
 686 uschar *bounce_recipient       = NULL;
 687 int     bounce_return_linesize_limit = 998;
 688 int     bounce_return_size_limit = 100*1024;
 689 uschar *bounce_sender_authentication = NULL;
 690
 691 uschar *callout_address        = NULL;
 692 int     callout_cache_domain_positive_expire = 7*24*60*60;
 693 int     callout_cache_domain_negative_expire = 3*60*60;
 694 int     callout_cache_positive_expire = 24*60*60;
 695 int     callout_cache_negative_expire = 2*60*60;
 696 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 697 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 698 int     check_log_inodes       = 100;
 699 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 700 int     check_spool_inodes     = 100;
 701 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 702
 703 uschar *chunking_advertise_hosts = US"*";
 704 unsigned chunking_datasize     = 0;
 705 unsigned chunking_data_left    = 0;
 706 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 707 const pcre2_code *regex_CHUNKING     = NULL;
 708
 709 #ifdef EXPERIMENTAL_ESMTP_LIMITS
 710 const pcre2_code *regex_LIMITS        = NULL;
 711 #endif
 712
 713 uschar *client_authenticator   = NULL;
 714 uschar *client_authenticated_id = NULL;
 715 uschar *client_authenticated_sender = NULL;
 716 #ifndef DISABLE_CLIENT_CMD_LOG
 717 gstring *client_cmd_log        = NULL;
 718 #endif
 719 int     clmacro_count          = 0;
 720 uschar *clmacros[MAX_CLMACROS];
 721 FILE   *config_file            = NULL;
 722 const uschar *config_filename  = NULL;
 723 int     config_lineno          = 0;
 724 #ifdef CONFIGURE_GROUP
 725 gid_t   config_gid             = CONFIGURE_GROUP;
 726 #else
 727 gid_t   config_gid             = 0;
 728 #endif
 729 uschar *config_main_filelist   = US CONFIGURE_FILE
 730                          "\0<-----------Space to patch configure_filename->";
 731 uschar *config_main_filename   = NULL;
 732 uschar *config_main_directory  = NULL;
 733
 734 #ifdef CONFIGURE_OWNER
 735 uid_t   config_uid             = CONFIGURE_OWNER;
 736 #else
 737 uid_t   config_uid             = 0;
 738 #endif
 739
 740 uint64_t connection_id         = 0L;
 741 int     connection_max_messages= -1;
 742 uschar *continue_proxy_cipher  = NULL;
 743 BOOL    continue_proxy_dane    = FALSE;
 744 uschar *continue_proxy_sni     = NULL;
 745 uschar *continue_hostname      = NULL;
 746 uschar *continue_host_address  = NULL;
 747 int     continue_sequence      = 1;
 748 uschar *continue_transport     = NULL;
 749 #ifdef EXPERIMENTAL_ESMTP_LIMITS
 750 unsigned continue_limit_mail   = 0;
 751 unsigned continue_limit_rcpt   = 0;
 752 unsigned continue_limit_rcptdom= 0;
 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{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 831             "} {no}{yes}}";
 832 uschar *deliver_address_data   = NULL;
 833 int     deliver_datafile       = -1;
 834 const uschar *deliver_domain   = NULL;
 835 uschar *deliver_domain_data    = NULL;
 836 const uschar *deliver_domain_orig = NULL;
 837 const uschar *deliver_domain_parent = NULL;
 838 time_t  deliver_frozen_at      = 0;
 839 uschar *deliver_home           = NULL;
 840 const uschar *deliver_host     = NULL;
 841 const uschar *deliver_host_address = NULL;
 842 int     deliver_host_port      = 0;
 843 uschar *deliver_in_buffer      = NULL;
 844 ino_t   deliver_inode          = 0;
 845 uschar *deliver_localpart      = NULL;
 846 uschar *deliver_localpart_data = NULL;
 847 uschar *deliver_localpart_orig = NULL;
 848 uschar *deliver_localpart_parent = NULL;
 849 uschar *deliver_localpart_prefix = NULL;
 850 uschar *deliver_localpart_prefix_v = NULL;
 851 uschar *deliver_localpart_suffix = NULL;
 852 uschar *deliver_localpart_suffix_v = NULL;
 853 uschar *deliver_out_buffer     = NULL;
 854 int     deliver_queue_load_max = -1;
 855 address_item  *deliver_recipients = NULL;
 856 uschar *deliver_selectstring   = NULL;
 857 uschar *deliver_selectstring_sender = NULL;
 858
 859 #ifndef DISABLE_DKIM
 860 unsigned dkim_collect_input      = 0;
 861 uschar *dkim_cur_signer          = NULL;
 862 int     dkim_key_length          = 0;
 863 void   *dkim_signatures          = NULL;
 864 uschar *dkim_signers             = NULL;
 865 uschar *dkim_signing_domain      = NULL;
 866 uschar *dkim_signing_selector    = NULL;
 867 uschar *dkim_verify_hashes       = US"sha256:sha512";
 868 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 869 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 870 BOOL    dkim_verify_minimal      = FALSE;
 871 uschar *dkim_verify_overall      = NULL;
 872 uschar *dkim_verify_signers      = US"$dkim_signers";
 873 uschar *dkim_verify_status       = NULL;
 874 uschar *dkim_verify_reason       = NULL;
 875 #endif
 876 #ifdef SUPPORT_DMARC
 877 uschar *dmarc_domain_policy     = NULL;
 878 uschar *dmarc_forensic_sender   = NULL;
 879 uschar *dmarc_history_file      = NULL;
 880 uschar *dmarc_status            = NULL;
 881 uschar *dmarc_status_text       = NULL;
 882 uschar *dmarc_tld_file          = NULL;
 883 uschar *dmarc_used_domain       = NULL;
 884 #endif
 885
 886 uschar *dns_again_means_nonexist = NULL;
 887 int     dns_csa_search_limit   = 5;
 888 int     dns_cname_loops        = 1;
 889 #ifdef SUPPORT_DANE
 890 int     dns_dane_ok            = -1;
 891 #endif
 892 uschar *dns_ipv4_lookup        = NULL;
 893 int     dns_retrans            = 0;
 894 int     dns_retry              = 0;
 895 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 896 uschar *dns_trust_aa           = NULL;
 897 int     dns_use_edns0          = -1; /* <0 = not coerced */
 898 uschar *dnslist_domain         = NULL;
 899 uschar *dnslist_matched        = NULL;
 900 uschar *dnslist_text           = NULL;
 901 uschar *dnslist_value          = NULL;
 902 tree_node *domainlist_anchor   = NULL;
 903 int     domainlist_count       = 0;
 904 const uschar *driver_srcfile   = NULL;
 905 int     driver_srcline         = 0;
 906 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 907 unsigned int dtrigger_selector = 0;
 908
 909 int     errno_quota            = ERRNO_QUOTA;
 910 uschar *errors_copy            = NULL;
 911 int     error_handling         = ERRORS_SENDER;
 912 uschar *errors_reply_to        = NULL;
 913 int     errors_sender_rc       = EXIT_FAILURE;
 914 #ifndef DISABLE_EVENT
 915 uschar *event_action             = NULL;        /* expansion for delivery events */
 916 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 917 int     event_defer_errno        = 0;
 918 const uschar *event_name         = NULL;        /* event name variable */
 919 #endif
 920
 921
 922 gid_t   exim_gid               = EXIM_GID;
 923 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 924                         "\0<---------------Space to patch exim_path->";
 925 uid_t   exim_uid               = EXIM_UID;
 926 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 927 int     expand_forbid          = 0;
 928 int     expand_nlength[EXPAND_MAXN+1];
 929 int     expand_nmax            = -1;
 930 const uschar *expand_nstring[EXPAND_MAXN+1];
 931 uschar *expand_string_message;
 932 uschar *extra_local_interfaces = NULL;
 933
 934 int     fake_response          = OK;
 935 uschar *fake_response_text     = US"Your message has been rejected but is "
 936                                    "being kept for evaluation.\nIf it was a "
 937                                    "legitimate message, it may still be "
 938                                    "delivered to the target recipient(s).";
 939 int     filter_n[FILTER_VARIABLE_COUNT];
 940 int     filter_sn[FILTER_VARIABLE_COUNT];
 941 int     filter_test            = FTEST_NONE;
 942 uschar *filter_test_sfile      = NULL;
 943 uschar *filter_test_ufile      = NULL;
 944 uschar *filter_thisaddress     = NULL;
 945 int     finduser_retries       = 0;
 946 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 947 uschar *freeze_tell            = NULL;
 948 uschar *freeze_tell_config     = NULL;
 949 uschar *fudged_queue_times     = US"";
 950
 951 uschar *gecos_name             = NULL;
 952 uschar *gecos_pattern          = NULL;
 953 rewrite_rule  *global_rewrite_rules = NULL;
 954
 955 volatile sig_atomic_t had_command_timeout = 0;
 956 volatile sig_atomic_t had_command_sigterm = 0;
 957 volatile sig_atomic_t had_data_timeout    = 0;
 958 volatile sig_atomic_t had_data_sigint     = 0;
 959 const uschar *headers_charset  = US HEADERS_CHARSET;
 960 int     header_insert_maxlen   = 64 * 1024;
 961 header_line  *header_last      = NULL;
 962 header_line  *header_list      = NULL;
 963 int     header_maxsize         = HEADER_MAXSIZE;
 964 int     header_line_maxsize    = 0;
 965
 966 header_name header_names[] = {
 967   /* name               len     allow_resent    htype */
 968   { US"bcc",            3,      TRUE,           htype_bcc },
 969   { US"cc",             2,      TRUE,           htype_cc },
 970   { US"date",           4,      TRUE,           htype_date },
 971   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 972   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 973   { US"from",           4,      TRUE,           htype_from },
 974   { US"message-id",    10,      TRUE,           htype_id },
 975   { US"received",       8,      FALSE,          htype_received },
 976   { US"reply-to",       8,      FALSE,          htype_reply_to },
 977   { US"return-path",   11,      FALSE,          htype_return_path },
 978   { US"sender",         6,      TRUE,           htype_sender },
 979   { US"subject",        7,      FALSE,          htype_subject },
 980   { US"to",             2,      TRUE,           htype_to }
 981 };
 982
 983 int header_names_size          = nelem(header_names);
 984
 985 uschar *helo_accept_junk_hosts = NULL;
 986 uschar *helo_allow_chars       = US"";
 987 uschar *helo_lookup_domains    = US"@ : @[]";
 988 uschar *helo_try_verify_hosts  = NULL;
 989 uschar *helo_verify_hosts      = NULL;
 990 const uschar *hex_digits       = CUS"0123456789abcdef";
 991 uschar *hold_domains           = NULL;
 992 uschar *host_data              = NULL;
 993 uschar *host_lookup            = NULL;
 994 uschar *host_lookup_order      = US"bydns:byaddr";
 995 uschar *host_lookup_msg        = US"";
 996 int     host_number            = 0;
 997 uschar *host_number_string     = NULL;
 998 uschar *host_reject_connection = NULL;
 999 uschar *hosts_connection_nolog = NULL;
1000 #ifdef SUPPORT_PROXY
1001 uschar *hosts_proxy            = NULL;
1002 #endif
1003 uschar *hosts_treat_as_local   = NULL;
1004 uschar *hosts_require_helo     = US"*";
1005 #ifdef EXPERIMENTAL_XCLIENT
1006 uschar *hosts_xclient          = NULL;
1007 #endif
1008 tree_node *hostlist_anchor     = NULL;
1009 int     hostlist_count         = 0;
1010
1011
1012 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
1013 uschar *ignore_fromline_hosts  = NULL;
1014 int     inetd_wait_timeout     = -1;
1015 uschar *initial_cwd            = NULL;
1016 uschar *interface_address      = NULL;
1017 int     interface_port         = -1;
1018 uschar *iterate_item           = NULL;
1019
1020 int     journal_fd             = -1;
1021
1022 uschar *keep_environment       = NULL;
1023
1024 int     keep_malformed         = 4*24*60*60;    /* 4 days */
1025
1026 uschar *eldap_dn               = NULL;
1027 const uschar *letter_digit_hyphen_dot =
1028     US"abcdefghijklmnopqrstuvwxyz"
1029       ".-0123456789"
1030       "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1031 #ifdef EXPERIMENTAL_ESMTP_LIMITS
1032 uschar *limits_advertise_hosts = US"*";
1033 #endif
1034 int     load_average           = -2;
1035 uschar *local_from_prefix      = NULL;
1036 uschar *local_from_suffix      = NULL;
1037
1038 #if HAVE_IPV6
1039 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1040 #else
1041 uschar *local_interfaces       = US"0.0.0.0";
1042 #endif
1043
1044 #ifdef HAVE_LOCAL_SCAN
1045 uschar *local_scan_data        = NULL;
1046 int     local_scan_timeout     = 5*60;
1047 #endif
1048 gid_t   local_user_gid         = (gid_t)(-1);
1049 uid_t   local_user_uid         = (uid_t)(-1);
1050
1051 tree_node *localpartlist_anchor= NULL;
1052 int     localpartlist_count    = 0;
1053 uschar *log_buffer             = NULL;
1054
1055 int     log_default[]          = { /* for initializing log_selector */
1056   Li_acl_warn_skipped,
1057   Li_connection_reject,
1058   Li_delay_delivery,
1059   Li_dkim,
1060   Li_dnslist_defer,
1061   Li_etrn,
1062   Li_host_lookup_failed,
1063   Li_lost_incoming_connection,
1064   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1065   Li_msg_id,
1066   Li_queue_run,
1067   Li_queue_time_exclusive,
1068   Li_rejected_header,
1069   Li_retry_defer,
1070   Li_sender_verify_fail,
1071   Li_size_reject,
1072   Li_skip_delivery,
1073   Li_smtp_confirmation,
1074   Li_tls_certificate_verified,
1075   Li_tls_cipher,
1076   -1
1077 };
1078
1079 uschar *log_file_path          = US LOG_FILE_PATH
1080                            "\0<--------------Space to patch log_file_path->";
1081
1082 int     log_notall[]           = {
1083   -1
1084 };
1085 bit_table log_options[]        = { /* must be in alphabetical order,
1086                                 with definitions from enum logbit. */
1087   BIT_TABLE(L, 8bitmime),
1088   BIT_TABLE(L, acl_warn_skipped),
1089   BIT_TABLE(L, address_rewrite),
1090   BIT_TABLE(L, all),
1091   BIT_TABLE(L, all_parents),
1092   BIT_TABLE(L, arguments),
1093   BIT_TABLE(L, connection_id),
1094   BIT_TABLE(L, connection_reject),
1095   BIT_TABLE(L, delay_delivery),
1096   BIT_TABLE(L, deliver_time),
1097   BIT_TABLE(L, delivery_size),
1098 #ifndef DISABLE_DKIM
1099   BIT_TABLE(L, dkim),
1100   BIT_TABLE(L, dkim_verbose),
1101 #endif
1102   BIT_TABLE(L, dnslist_defer),
1103   BIT_TABLE(L, dnssec),
1104   BIT_TABLE(L, etrn),
1105   BIT_TABLE(L, host_lookup_failed),
1106   BIT_TABLE(L, ident_timeout),
1107   BIT_TABLE(L, incoming_interface),
1108   BIT_TABLE(L, incoming_port),
1109   BIT_TABLE(L, lost_incoming_connection),
1110   BIT_TABLE(L, millisec),
1111   BIT_TABLE(L, msg_id),
1112   BIT_TABLE(L, msg_id_created),
1113   BIT_TABLE(L, outgoing_interface),
1114   BIT_TABLE(L, outgoing_port),
1115   BIT_TABLE(L, pid),
1116   BIT_TABLE(L, pipelining),
1117   BIT_TABLE(L, protocol_detail),
1118 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1119   BIT_TABLE(L, proxy),
1120 #endif
1121   BIT_TABLE(L, queue_run),
1122   BIT_TABLE(L, queue_time),
1123   BIT_TABLE(L, queue_time_exclusive),
1124   BIT_TABLE(L, queue_time_overall),
1125   BIT_TABLE(L, receive_time),
1126   BIT_TABLE(L, received_recipients),
1127   BIT_TABLE(L, received_sender),
1128   BIT_TABLE(L, rejected_header),
1129   { US"rejected_headers", Li_rejected_header },
1130   BIT_TABLE(L, retry_defer),
1131   BIT_TABLE(L, return_path_on_delivery),
1132   BIT_TABLE(L, sender_on_delivery),
1133   BIT_TABLE(L, sender_verify_fail),
1134   BIT_TABLE(L, size_reject),
1135   BIT_TABLE(L, skip_delivery),
1136   BIT_TABLE(L, smtp_confirmation),
1137   BIT_TABLE(L, smtp_connection),
1138   BIT_TABLE(L, smtp_incomplete_transaction),
1139   BIT_TABLE(L, smtp_mailauth),
1140   BIT_TABLE(L, smtp_no_mail),
1141   BIT_TABLE(L, smtp_protocol_error),
1142   BIT_TABLE(L, smtp_syntax_error),
1143   BIT_TABLE(L, subject),
1144   BIT_TABLE(L, tls_certificate_verified),
1145   BIT_TABLE(L, tls_cipher),
1146   BIT_TABLE(L, tls_peerdn),
1147   BIT_TABLE(L, tls_resumption),
1148   BIT_TABLE(L, tls_sni),
1149   BIT_TABLE(L, unknown_in_list),
1150 };
1151 int     log_options_count      = nelem(log_options);
1152
1153 int     log_reject_target      = 0;
1154 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1155 uschar *log_selector_string    = NULL;
1156 FILE   *log_stderr             = NULL;
1157 uschar *login_sender_address   = NULL;
1158 uschar *lookup_dnssec_authenticated = NULL;
1159 int     lookup_open_max        = 25;
1160 uschar *lookup_value           = NULL;
1161
1162 macro_item *macros_user        = NULL;
1163 uschar *mailstore_basename     = NULL;
1164 #ifdef WITH_CONTENT_SCAN
1165 uschar *malware_name           = NULL;  /* Virus Name */
1166 #endif
1167 int     max_received_linelength= 0;
1168 int     max_username_length    = 0;
1169 int     message_age            = 0;
1170 uschar *message_body           = NULL;
1171 uschar *message_body_end       = NULL;
1172 int     message_body_size      = 0;
1173 int     message_body_visible   = 500;
1174 int     message_ended          = END_NOTSTARTED;
1175 uschar *message_headers        = NULL;
1176 uschar *message_id;
1177 uschar *message_id_domain      = NULL;
1178 uschar *message_id_text        = NULL;
1179 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1180 uschar *message_id_external;
1181 int     message_linecount      = 0;
1182 int     message_size           = 0;
1183 uschar *message_size_limit     = US"50M";
1184 #ifdef SUPPORT_I18N
1185 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1186 #endif
1187 uschar  message_subdir[2]      = { 0, 0 };
1188 uschar *message_reference      = NULL;
1189
1190 /* MIME ACL expandables */
1191 #ifdef WITH_CONTENT_SCAN
1192 int     mime_anomaly_level     = 0;
1193 const uschar *mime_anomaly_text      = NULL;
1194 uschar *mime_boundary          = NULL;
1195 uschar *mime_charset           = NULL;
1196 uschar *mime_content_description = NULL;
1197 uschar *mime_content_disposition = NULL;
1198 uschar *mime_content_id        = NULL;
1199 unsigned int mime_content_size = 0;
1200 uschar *mime_content_transfer_encoding = NULL;
1201 uschar *mime_content_type      = NULL;
1202 uschar *mime_decoded_filename  = NULL;
1203 uschar *mime_filename          = NULL;
1204 int     mime_is_multipart      = 0;
1205 int     mime_is_coverletter    = 0;
1206 int     mime_is_rfc822         = 0;
1207 int     mime_part_count        = -1;
1208 #endif
1209
1210 uid_t  *never_users            = NULL;
1211 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1212
1213 const int on                   = 1;     /* for setsockopt */
1214 const int off                  = 0;
1215
1216 uid_t   original_euid;
1217 gid_t   originator_gid;
1218 uschar *originator_login       = NULL;
1219 uschar *originator_name        = NULL;
1220 uid_t   originator_uid;
1221 uschar *override_local_interfaces = NULL;
1222 uschar *override_pid_file_path = NULL;
1223
1224 BOOL    panic_coredump         = FALSE;
1225 pcre2_general_context * pcre_gen_ctx = NULL;
1226 pcre2_compile_context * pcre_gen_cmp_ctx = NULL;
1227 pcre2_match_context * pcre_gen_mtc_ctx = NULL;
1228 pcre2_general_context * pcre_mlc_ctx = NULL;
1229 pcre2_compile_context * pcre_mlc_cmp_ctx = NULL;
1230
1231 uschar *percent_hack_domains   = NULL;
1232 uschar *pid_file_path          = US PID_FILE_PATH
1233                            "\0<--------------Space to patch pid_file_path->";
1234 #ifndef DISABLE_PIPE_CONNECT
1235 uschar *pipe_connect_advertise_hosts = US"*";
1236 #endif
1237 uschar *pipelining_advertise_hosts = US"*";
1238 uschar *primary_hostname       = NULL;
1239 uschar *process_info;
1240 int     process_info_len       = 0;
1241 uschar *process_log_path       = NULL;
1242 const uschar *process_purpose  = US"fresh-exec";
1243
1244 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS) || defined(EXPERIMENTAL_XCLIENT)
1245 uschar *proxy_external_address = NULL;
1246 int     proxy_external_port    = 0;
1247 uschar *proxy_local_address    = NULL;
1248 int     proxy_local_port       = 0;
1249 int     proxy_protocol_timeout = 3;
1250 #endif
1251
1252 uschar *prvscheck_address      = NULL;
1253 uschar *prvscheck_keynum       = NULL;
1254 uschar *prvscheck_result       = NULL;
1255
1256
1257 qrunner *qrunners              = NULL;
1258
1259 const uschar *qualify_domain_recipient = NULL;
1260 uschar *qualify_domain_sender  = NULL;
1261 uschar *queue_domains          = NULL;
1262 int     queue_interval         = -1;
1263 uschar *queue_name             = US"";
1264 uschar *queue_name_dest        = NULL;
1265 uschar *queue_only_file        = NULL;
1266 int     queue_only_load        = -1;
1267 uschar *queue_run_max          = US"5";
1268 pid_t   queue_run_pid          = (pid_t)0;
1269 int     queue_run_pipe         = -1;
1270 unsigned queue_size            = 0;
1271 time_t  queue_size_next        = 0;
1272 uschar *queue_smtp_domains     = NULL;
1273
1274 uint32_t random_seed           = 0;
1275 tree_node *ratelimiters_cmd    = NULL;
1276 tree_node *ratelimiters_conn   = NULL;
1277 tree_node *ratelimiters_mail   = NULL;
1278 uschar *raw_active_hostname    = NULL;
1279 uschar *raw_sender             = NULL;
1280 uschar **raw_recipients        = NULL;
1281 int     raw_recipients_count   = 0;
1282
1283 int     rcpt_count             = 0;
1284 int     rcpt_fail_count        = 0;
1285 int     rcpt_defer_count       = 0;
1286 gid_t   real_gid;
1287 uid_t   real_uid;
1288 int     receive_linecount      = 0;
1289 int     receive_messagecount   = 0;
1290 int     receive_timeout        = 0;
1291 int     received_count         = 0;
1292 uschar *received_for           = NULL;
1293
1294 /*  This is the default text for Received headers generated by Exim. The
1295 date  will be automatically added on the end. */
1296
1297 uschar *received_header_text   = US
1298      "Received: "
1299      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1300        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1301          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1302      "by $primary_hostname "
1303      "${if def:received_protocol {with $received_protocol }}"
1304 #ifndef DISABLE_TLS
1305      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1306      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1307 #endif
1308      "(Exim $version_number)\n\t"
1309      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1310      "id $message_exim_id"
1311      "${if def:received_for {\n\tfor $received_for}}"
1312      "\0<---------------Space to patch received_header_text->";
1313
1314 int     received_headers_max   = 30;
1315 uschar *received_protocol      = NULL;
1316 struct timeval received_time   = { 0, 0 };
1317 struct timeval received_time_complete = { 0, 0 };
1318 uschar *recipient_data         = NULL;
1319 uschar *recipient_unqualified_hosts = NULL;
1320 uschar *recipient_verify_failure = NULL;
1321 int     recipients_count       = 0;
1322 recipient_item  *recipients_list = NULL;
1323 int     recipients_list_max    = 0;
1324 int     recipients_max         = 50000;
1325 const pcre2_code *regex_AUTH         = NULL;
1326 const pcre2_code *regex_check_dns_names = NULL;
1327 const pcre2_code *regex_From         = NULL;
1328 const pcre2_code *regex_IGNOREQUOTA  = NULL;
1329 const pcre2_code *regex_PIPELINING   = NULL;
1330 const pcre2_code *regex_SIZE         = NULL;
1331 #ifndef DISABLE_PIPE_CONNECT
1332 const pcre2_code *regex_EARLY_PIPE   = NULL;
1333 #endif
1334 int    regex_cachesize               = 0;
1335 const pcre2_code *regex_ismsgid      = NULL;
1336 const pcre2_code *regex_smtp_code    = NULL;
1337 const uschar *regex_vars[REGEX_VARS] = { NULL };
1338 #ifdef WHITELIST_D_MACROS
1339 const pcre2_code *regex_whitelisted_macro = NULL;
1340 #endif
1341 #ifdef WITH_CONTENT_SCAN
1342 uschar *regex_match_string     = NULL;
1343 #endif
1344 int     remote_delivery_count  = 0;
1345 int     remote_max_parallel    = 4;
1346 uschar *remote_sort_domains    = NULL;
1347 int     retry_data_expire      = 7*24*60*60;
1348 int     retry_interval_max     = 24*60*60;
1349 int     retry_maximum_timeout  = 0;        /* set from retry config */
1350 retry_config  *retries         = NULL;
1351 uschar *return_path            = NULL;
1352 int     rewrite_existflags     = 0;
1353 uschar *rfc1413_hosts          = US"@[]";
1354 int     rfc1413_query_timeout  = 0;
1355 uid_t   root_gid               = ROOT_GID;
1356 uid_t   root_uid               = ROOT_UID;
1357
1358 router_instance  *routers  = NULL;
1359 router_instance  router_defaults = {
1360     .next =                     NULL,
1361     .name =                     NULL,
1362     .info =                     NULL,
1363     .options_block =            NULL,
1364     .driver_name =              NULL,
1365
1366     .address_data =             NULL,
1367 #ifdef EXPERIMENTAL_BRIGHTMAIL
1368     .bmi_rule =                 NULL,
1369 #endif
1370     .cannot_route_message =     NULL,
1371     .condition =                NULL,
1372     .current_directory =        NULL,
1373     .debug_string =             NULL,
1374     .domains =                  NULL,
1375     .errors_to =                NULL,
1376     .expand_gid =               NULL,
1377     .expand_uid =               NULL,
1378     .expand_more =              NULL,
1379     .expand_unseen =            NULL,
1380     .extra_headers =            NULL,
1381     .fallback_hosts =           NULL,
1382     .home_directory =           NULL,
1383     .ignore_target_hosts =      NULL,
1384     .local_parts =              NULL,
1385     .pass_router_name =         NULL,
1386     .prefix =                   NULL,
1387     .redirect_router_name =     NULL,
1388     .remove_headers =           NULL,
1389     .require_files =            NULL,
1390     .router_home_directory =    NULL,
1391     .self =                     US"freeze",
1392     .senders =                  NULL,
1393     .suffix =                   NULL,
1394     .translate_ip_address =     NULL,
1395     .transport_name =           NULL,
1396
1397     .address_test =             TRUE,
1398 #ifdef EXPERIMENTAL_BRIGHTMAIL
1399     .bmi_deliver_alternate =    FALSE,
1400     .bmi_deliver_default =      FALSE,
1401     .bmi_dont_deliver =         FALSE,
1402 #endif
1403     .expn =                     TRUE,
1404     .caseful_local_part =       FALSE,
1405     .check_local_user =         FALSE,
1406     .disable_logging =          FALSE,
1407     .fail_verify_recipient =    FALSE,
1408     .fail_verify_sender =       FALSE,
1409     .gid_set =                  FALSE,
1410     .initgroups =               FALSE,
1411     .log_as_local =             TRUE_UNSET,
1412     .more =                     TRUE,
1413     .pass_on_timeout =          FALSE,
1414     .prefix_optional =          FALSE,
1415     .repeat_use =               TRUE,
1416     .retry_use_local_part =     TRUE_UNSET,
1417     .same_domain_copy_routing = FALSE,
1418     .self_rewrite =             FALSE,
1419     .set =                      NULL,
1420     .suffix_optional =          FALSE,
1421     .verify_only =              FALSE,
1422     .verify_recipient =         TRUE,
1423     .verify_sender =            TRUE,
1424     .uid_set =                  FALSE,
1425     .unseen =                   FALSE,
1426     .dsn_lasthop =              FALSE,
1427
1428     .self_code =                self_freeze,
1429     .uid =                      (uid_t)(-1),
1430     .gid =                      (gid_t)(-1),
1431
1432     .fallback_hostlist =        NULL,
1433     .transport =                NULL,
1434     .pass_router =              NULL,
1435     .redirect_router =          NULL,
1436
1437     .dnssec =                   { .request= US"*", .require=NULL },
1438 };
1439
1440 uschar *router_name            = NULL;
1441 tree_node *router_var          = NULL;
1442
1443 ip_address_item *running_interfaces = NULL;
1444
1445 /* This is a weird one. The following string gets patched in the binary by the
1446 script that sets up a copy of Exim for running in the test harness. It seems
1447 that compilers are now clever, and share constant strings if they can.
1448 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1449 make use of the end of this string in order to save space. So the patching then
1450 wrecks this. We defeat this optimization by adding some additional characters
1451 onto the end of the string. */
1452
1453 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1454
1455 int     runrc                  = 0;
1456
1457 uschar *search_error_message   = NULL;
1458 uschar *self_hostname          = NULL;
1459 uschar *sender_address         = NULL;
1460 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1461 uschar *sender_address_data    = NULL;
1462 uschar *sender_address_unrewritten = NULL;
1463 uschar *sender_data            = NULL;
1464 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1465 uschar *sender_fullhost        = NULL;
1466 uschar *sender_helo_name       = NULL;
1467 uschar **sender_host_aliases   = &no_aliases;
1468 uschar *sender_host_address    = NULL;
1469 uschar *sender_host_authenticated = NULL;
1470 uschar *sender_host_auth_pubname  = NULL;
1471 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1472 uschar *sender_host_name       = NULL;
1473 int     sender_host_port       = 0;
1474 uschar *sender_ident           = NULL;
1475 uschar *sender_rate            = NULL;
1476 uschar *sender_rate_limit      = NULL;
1477 uschar *sender_rate_period     = NULL;
1478 uschar *sender_rcvhost         = NULL;
1479 uschar *sender_unqualified_hosts = NULL;
1480 uschar *sender_verify_failure = NULL;
1481 address_item *sender_verified_list  = NULL;
1482 address_item *sender_verified_failed = NULL;
1483 int     sender_verified_rc     = -1;
1484 uschar *sending_ip_address     = NULL;
1485 int     sending_port           = -1;
1486 SIGNAL_BOOL sigalrm_seen       = FALSE;
1487 const uschar *sigalarm_setter  = NULL;
1488 uschar **sighup_argv           = NULL;
1489 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1490 int     smtp_accept_count      = 0;
1491 int     smtp_accept_max        = 20;
1492 int     smtp_accept_max_nonmail= 10;
1493 uschar *smtp_accept_max_nonmail_hosts = US"*";
1494 uschar *smtp_accept_max_per_connection = US"1000";
1495 uschar *smtp_accept_max_per_host = NULL;
1496 int     smtp_accept_queue      = 0;
1497 int     smtp_accept_queue_per_connection = 10;
1498 int     smtp_accept_reserve    = 0;
1499 uschar *smtp_active_hostname   = NULL;
1500 int     smtp_backlog_monitor   = 0;
1501 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1502                              "Exim $version_number $tod_full"
1503                              "\0<---------------Space to patch smtp_banner->";
1504 int     smtp_ch_index          = 0;
1505 uschar *smtp_cmd_argument      = NULL;
1506 uschar *smtp_cmd_buffer        = NULL;
1507 struct timeval smtp_connection_start  = {0,0};
1508 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1509 int     smtp_connect_backlog   = 20;
1510 double  smtp_delay_mail        = 0.0;
1511 double  smtp_delay_rcpt        = 0.0;
1512 FILE   *smtp_in                = NULL;
1513 int     smtp_listen_backlog    = 0;
1514 int     smtp_load_reserve      = -1;
1515 int     smtp_mailcmd_count     = 0;
1516 int     smtp_mailcmd_max       = -1;
1517 FILE   *smtp_out               = NULL;
1518 uschar *smtp_etrn_command      = NULL;
1519 int     smtp_max_synprot_errors= 3;
1520 int     smtp_max_unknown_commands = 3;
1521 uschar *smtp_notquit_reason    = NULL;
1522 unsigned smtp_peer_options     = 0;
1523 unsigned smtp_peer_options_wrap= 0;
1524 uschar *smtp_ratelimit_hosts   = NULL;
1525 uschar *smtp_ratelimit_mail    = NULL;
1526 uschar *smtp_ratelimit_rcpt    = NULL;
1527 uschar *smtp_read_error        = US"";
1528 int     smtp_receive_timeout   = 5*60;
1529 uschar *smtp_receive_timeout_s = NULL;
1530 uschar *smtp_reserve_hosts     = NULL;
1531 int     smtp_rlm_base          = 0;
1532 double  smtp_rlm_factor        = 0.0;
1533 int     smtp_rlm_limit         = 0;
1534 int     smtp_rlm_threshold     = INT_MAX;
1535 int     smtp_rlr_base          = 0;
1536 double  smtp_rlr_factor        = 0.0;
1537 int     smtp_rlr_limit         = 0;
1538 int     smtp_rlr_threshold     = INT_MAX;
1539 #ifdef SUPPORT_I18N
1540 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1541 #endif
1542
1543 #ifdef WITH_CONTENT_SCAN
1544 uschar *spamd_address          = US"127.0.0.1 783";
1545 uschar *spam_bar               = NULL;
1546 uschar *spam_report            = NULL;
1547 uschar *spam_action            = NULL;
1548 uschar *spam_score             = NULL;
1549 uschar *spam_score_int         = NULL;
1550 #endif
1551 #ifdef SUPPORT_SPF
1552 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1553 uschar *spf_header_comment     = NULL;
1554 uschar *spf_received           = NULL;
1555 uschar *spf_result             = NULL;
1556 uschar *spf_smtp_comment       = NULL;
1557 uschar *spf_smtp_comment_template
1558                     /* Used to be: "Please%_see%_http://www.open-spf.org/Why?id=%{S}&ip=%{C}&receiver=%{R}" */
1559                                = US"Please%_see%_http://www.open-spf.org/Why";
1560
1561 #endif
1562
1563 FILE   *spool_data_file        = NULL;
1564 uschar *spool_directory        = US SPOOL_DIRECTORY
1565                            "\0<--------------Space to patch spool_directory->";
1566 #ifdef SUPPORT_SRS
1567 uschar *srs_recipient          = NULL;
1568 #endif
1569 int     string_datestamp_offset= -1;
1570 int     string_datestamp_length= 0;
1571 int     string_datestamp_type  = -1;
1572 const uschar *submission_domain = NULL;
1573 const uschar *submission_name  = NULL;
1574 int     syslog_facility        = LOG_MAIL;
1575 uschar *syslog_processname     = US"exim";
1576 uschar *system_filter          = NULL;
1577
1578 uschar *system_filter_directory_transport = NULL;
1579 uschar *system_filter_file_transport = NULL;
1580 uschar *system_filter_pipe_transport = NULL;
1581 uschar *system_filter_reply_transport = NULL;
1582
1583 gid_t   system_filter_gid      = 0;
1584 uid_t   system_filter_uid      = (uid_t)-1;
1585
1586 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1587 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1588 #ifdef USE_TCP_WRAPPERS
1589 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1590 #endif
1591 int     test_harness_load_avg  = 0;
1592 int     thismessage_size_limit = 0;
1593 int     timeout_frozen_after   = 0;
1594 #ifdef MEASURE_TIMING
1595 struct timeval timestamp_startup;
1596 #endif
1597
1598 transport_instance  *transports = NULL;
1599
1600 transport_instance  transport_defaults = {
1601     /* All non-mentioned elements zero/NULL/FALSE */
1602     .batch_max =                1,
1603     .multi_domain =             TRUE,
1604     .max_addresses =            US"100",
1605     .connection_max_messages =  500,
1606     .uid =                      (uid_t)(-1),
1607     .gid =                      (gid_t)(-1),
1608     .filter_timeout =           300,
1609     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1610                                                  1 nor 0 so can detect unset */
1611 };
1612
1613 int     transport_count;
1614 uschar *transport_name          = NULL;
1615 int     transport_newlines;
1616 const uschar **transport_filter_argv  = NULL;
1617 int     transport_filter_timeout;
1618 int     transport_write_timeout= 0;
1619
1620 tree_node  *tree_dns_fails     = NULL;
1621 tree_node  *tree_duplicates    = NULL;
1622 tree_node  *tree_nonrecipients = NULL;
1623 tree_node  *tree_unusable      = NULL;
1624
1625 gid_t  *trusted_groups         = NULL;
1626 uid_t  *trusted_users          = NULL;
1627 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1628
1629 uschar *unknown_login          = NULL;
1630 uschar *unknown_username       = NULL;
1631 uschar *untrusted_set_sender   = NULL;
1632
1633 /*  A regex for matching a "From_" line in an incoming message, in the form
1634
1635     From ph10 Fri Jan  5 12:35 GMT 1996
1636
1637 which  the "mail" commands send to the MTA (undocumented, of course), or in
1638 the  form
1639
1640     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1641
1642 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1643 Because  of variations in time formats, just match up to the minutes. That
1644 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1645 so  just require one digit for hours and minutes. The weekday is also absent
1646 in  some forms. */
1647
1648 uschar *uucp_from_pattern      = US
1649    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1650    "(?:"                                          /* Non-extracting bracket */
1651    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1652    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1653    ")"                                            /* End alternation */
1654    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1655
1656 uschar *uucp_from_sender       = US"$1";
1657
1658 uschar *verify_mode            = NULL;
1659 uschar *version_copyright      =
1660  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1661    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2022";
1662 uschar *version_date           = US"?";
1663 uschar *version_cnumber        = US"????";
1664 uschar *version_string         = US"?";
1665
1666 uschar *warn_message_file      = NULL;
1667 int     warning_count          = 0;
1668 const uschar *warnmsg_delay    = NULL;
1669 const uschar *warnmsg_recipients = NULL;
1670
1671 /*  End of globals.c */