src/src/globals.c

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