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 uschar *continue_hostname      = NULL;
 733 uschar *continue_host_address  = NULL;
 734 int     continue_sequence      = 1;
 735 uschar *continue_transport     = NULL;
 736
 737 uschar *csa_status             = NULL;
 738 cut_t   cutthrough = {
 739   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 740   .delivery =           FALSE,                          /* when to attempt */
 741   .defer_pass =         FALSE,                          /* on defer: spool locally */
 742   .is_tls =             FALSE,                          /* not a TLS conn yet */
 743   .cctx =               {.sock = -1},                   /* open connection */
 744   .nrcpt =              0,                              /* number of addresses */
 745 };
 746
 747 int     daemon_notifier_fd     = -1;
 748 uschar *daemon_smtp_port       = US"smtp";
 749 int     daemon_startup_retries = 9;
 750 int     daemon_startup_sleep   = 30;
 751
 752 #ifdef EXPERIMENTAL_DCC
 753 uschar *dcc_header             = NULL;
 754 uschar *dcc_result             = NULL;
 755 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 756 uschar *dccifd_options         = US"header";
 757 #endif
 758
 759 int     debug_fd               = -1;
 760 FILE   *debug_file             = NULL;
 761 int     debug_notall[]         = {
 762   Di_memory,
 763   Di_noutf8,
 764   -1
 765 };
 766 bit_table debug_options[]      = { /* must be in alphabetical order and use
 767                                  only the enum values from macro.h */
 768   BIT_TABLE(D, acl),
 769   BIT_TABLE(D, all),
 770   BIT_TABLE(D, auth),
 771   BIT_TABLE(D, deliver),
 772   BIT_TABLE(D, dns),
 773   BIT_TABLE(D, dnsbl),
 774   BIT_TABLE(D, exec),
 775   BIT_TABLE(D, expand),
 776   BIT_TABLE(D, filter),
 777   BIT_TABLE(D, hints_lookup),
 778   BIT_TABLE(D, host_lookup),
 779   BIT_TABLE(D, ident),
 780   BIT_TABLE(D, interface),
 781   BIT_TABLE(D, lists),
 782   BIT_TABLE(D, load),
 783   BIT_TABLE(D, local_scan),
 784   BIT_TABLE(D, lookup),
 785   BIT_TABLE(D, memory),
 786   BIT_TABLE(D, noutf8),
 787   BIT_TABLE(D, pid),
 788   BIT_TABLE(D, process_info),
 789   BIT_TABLE(D, queue_run),
 790   BIT_TABLE(D, receive),
 791   BIT_TABLE(D, resolver),
 792   BIT_TABLE(D, retry),
 793   BIT_TABLE(D, rewrite),
 794   BIT_TABLE(D, route),
 795   BIT_TABLE(D, timestamp),
 796   BIT_TABLE(D, tls),
 797   BIT_TABLE(D, transport),
 798   BIT_TABLE(D, uid),
 799   BIT_TABLE(D, verify),
 800 };
 801 int     debug_options_count    = nelem(debug_options);
 802
 803 unsigned int debug_selector    = 0;
 804 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 805 uschar *delay_warning_condition=
 806   US"${if or {"
 807             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 808             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 809             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 810             "} {no}{yes}}";
 811 uschar *deliver_address_data   = NULL;
 812 int     deliver_datafile       = -1;
 813 const uschar *deliver_domain   = NULL;
 814 uschar *deliver_domain_data    = NULL;
 815 const uschar *deliver_domain_orig = NULL;
 816 const uschar *deliver_domain_parent = NULL;
 817 time_t  deliver_frozen_at      = 0;
 818 uschar *deliver_home           = NULL;
 819 const uschar *deliver_host     = NULL;
 820 const uschar *deliver_host_address = NULL;
 821 int     deliver_host_port      = 0;
 822 uschar *deliver_in_buffer      = NULL;
 823 ino_t   deliver_inode          = 0;
 824 uschar *deliver_localpart      = NULL;
 825 uschar *deliver_localpart_data = NULL;
 826 uschar *deliver_localpart_orig = NULL;
 827 uschar *deliver_localpart_parent = NULL;
 828 uschar *deliver_localpart_prefix = NULL;
 829 uschar *deliver_localpart_prefix_v = NULL;
 830 uschar *deliver_localpart_suffix = NULL;
 831 uschar *deliver_localpart_suffix_v = NULL;
 832 uschar *deliver_localpart_verified = NULL;
 833 uschar *deliver_out_buffer     = NULL;
 834 int     deliver_queue_load_max = -1;
 835 address_item  *deliver_recipients = NULL;
 836 uschar *deliver_selectstring   = NULL;
 837 uschar *deliver_selectstring_sender = NULL;
 838
 839 #ifndef DISABLE_DKIM
 840 unsigned dkim_collect_input      = 0;
 841 uschar *dkim_cur_signer          = NULL;
 842 int     dkim_key_length          = 0;
 843 void   *dkim_signatures          = NULL;
 844 uschar *dkim_signers             = NULL;
 845 uschar *dkim_signing_domain      = NULL;
 846 uschar *dkim_signing_selector    = NULL;
 847 uschar *dkim_verify_hashes       = US"sha256:sha512";
 848 uschar *dkim_verify_keytypes     = US"ed25519:rsa";
 849 uschar *dkim_verify_min_keysizes = US"rsa=1024 ed25519=250";
 850 BOOL    dkim_verify_minimal      = FALSE;
 851 uschar *dkim_verify_overall      = NULL;
 852 uschar *dkim_verify_signers      = US"$dkim_signers";
 853 uschar *dkim_verify_status       = NULL;
 854 uschar *dkim_verify_reason       = NULL;
 855 #endif
 856 #ifdef SUPPORT_DMARC
 857 uschar *dmarc_domain_policy     = NULL;
 858 uschar *dmarc_forensic_sender   = NULL;
 859 uschar *dmarc_history_file      = NULL;
 860 uschar *dmarc_status            = NULL;
 861 uschar *dmarc_status_text       = NULL;
 862 uschar *dmarc_tld_file          = NULL;
 863 uschar *dmarc_used_domain       = NULL;
 864 #endif
 865
 866 uschar *dns_again_means_nonexist = NULL;
 867 int     dns_csa_search_limit   = 5;
 868 int     dns_cname_loops        = 1;
 869 #ifdef SUPPORT_DANE
 870 int     dns_dane_ok            = -1;
 871 #endif
 872 uschar *dns_ipv4_lookup        = NULL;
 873 int     dns_retrans            = 0;
 874 int     dns_retry              = 0;
 875 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 876 uschar *dns_trust_aa           = NULL;
 877 int     dns_use_edns0          = -1; /* <0 = not coerced */
 878 uschar *dnslist_domain         = NULL;
 879 uschar *dnslist_matched        = NULL;
 880 uschar *dnslist_text           = NULL;
 881 uschar *dnslist_value          = NULL;
 882 tree_node *domainlist_anchor   = NULL;
 883 int     domainlist_count       = 0;
 884 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 885
 886 int     errno_quota            = ERRNO_QUOTA;
 887 uschar *errors_copy            = NULL;
 888 int     error_handling         = ERRORS_SENDER;
 889 uschar *errors_reply_to        = NULL;
 890 int     errors_sender_rc       = EXIT_FAILURE;
 891 #ifndef DISABLE_EVENT
 892 uschar *event_action             = NULL;        /* expansion for delivery events */
 893 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 894 int     event_defer_errno        = 0;
 895 const uschar *event_name         = NULL;        /* event name variable */
 896 #endif
 897
 898
 899 gid_t   exim_gid               = EXIM_GID;
 900 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 901                         "\0<---------------Space to patch exim_path->";
 902 uid_t   exim_uid               = EXIM_UID;
 903 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 904 int     expand_forbid          = 0;
 905 int     expand_nlength[EXPAND_MAXN+1];
 906 int     expand_nmax            = -1;
 907 uschar *expand_nstring[EXPAND_MAXN+1];
 908 uschar *expand_string_message;
 909 uschar *extra_local_interfaces = NULL;
 910
 911 int     fake_response          = OK;
 912 uschar *fake_response_text     = US"Your message has been rejected but is "
 913                                    "being kept for evaluation.\nIf it was a "
 914                                    "legitimate message, it may still be "
 915                                    "delivered to the target recipient(s).";
 916 int     filter_n[FILTER_VARIABLE_COUNT];
 917 int     filter_sn[FILTER_VARIABLE_COUNT];
 918 int     filter_test            = FTEST_NONE;
 919 uschar *filter_test_sfile      = NULL;
 920 uschar *filter_test_ufile      = NULL;
 921 uschar *filter_thisaddress     = NULL;
 922 int     finduser_retries       = 0;
 923 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 924 uschar *freeze_tell            = NULL;
 925 uschar *freeze_tell_config     = NULL;
 926 uschar *fudged_queue_times     = US"";
 927
 928 uschar *gecos_name             = NULL;
 929 uschar *gecos_pattern          = NULL;
 930 rewrite_rule  *global_rewrite_rules = NULL;
 931
 932 volatile sig_atomic_t had_command_timeout = 0;
 933 volatile sig_atomic_t had_command_sigterm = 0;
 934 volatile sig_atomic_t had_data_timeout    = 0;
 935 volatile sig_atomic_t had_data_sigint     = 0;
 936 uschar *headers_charset        = US HEADERS_CHARSET;
 937 int     header_insert_maxlen   = 64 * 1024;
 938 header_line  *header_last      = NULL;
 939 header_line  *header_list      = NULL;
 940 int     header_maxsize         = HEADER_MAXSIZE;
 941 int     header_line_maxsize    = 0;
 942
 943 header_name header_names[] = {
 944   /* name               len     allow_resent    htype */
 945   { US"bcc",            3,      TRUE,           htype_bcc },
 946   { US"cc",             2,      TRUE,           htype_cc },
 947   { US"date",           4,      TRUE,           htype_date },
 948   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 949   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 950   { US"from",           4,      TRUE,           htype_from },
 951   { US"message-id",    10,      TRUE,           htype_id },
 952   { US"received",       8,      FALSE,          htype_received },
 953   { US"reply-to",       8,      FALSE,          htype_reply_to },
 954   { US"return-path",   11,      FALSE,          htype_return_path },
 955   { US"sender",         6,      TRUE,           htype_sender },
 956   { US"subject",        7,      FALSE,          htype_subject },
 957   { US"to",             2,      TRUE,           htype_to }
 958 };
 959
 960 int header_names_size          = nelem(header_names);
 961
 962 uschar *helo_accept_junk_hosts = NULL;
 963 uschar *helo_allow_chars       = US"";
 964 uschar *helo_lookup_domains    = US"@ : @[]";
 965 uschar *helo_try_verify_hosts  = NULL;
 966 uschar *helo_verify_hosts      = NULL;
 967 const uschar *hex_digits       = CUS"0123456789abcdef";
 968 uschar *hold_domains           = NULL;
 969 uschar *host_data              = NULL;
 970 uschar *host_lookup            = NULL;
 971 uschar *host_lookup_order      = US"bydns:byaddr";
 972 uschar *host_lookup_msg        = US"";
 973 int     host_number            = 0;
 974 uschar *host_number_string     = NULL;
 975 uschar *host_reject_connection = NULL;
 976 tree_node *hostlist_anchor     = NULL;
 977 int     hostlist_count         = 0;
 978 uschar *hosts_treat_as_local   = NULL;
 979 uschar *hosts_connection_nolog = NULL;
 980
 981 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 982 uschar *ignore_fromline_hosts  = NULL;
 983 int     inetd_wait_timeout     = -1;
 984 uschar *initial_cwd            = NULL;
 985 uschar *interface_address      = NULL;
 986 int     interface_port         = -1;
 987 uschar *iterate_item           = NULL;
 988
 989 int     journal_fd             = -1;
 990
 991 uschar *keep_environment       = NULL;
 992
 993 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 994
 995 uschar *eldap_dn               = NULL;
 996 int     load_average           = -2;
 997 uschar *local_from_prefix      = NULL;
 998 uschar *local_from_suffix      = NULL;
 999
1000 #if HAVE_IPV6
1001 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1002 #else
1003 uschar *local_interfaces       = US"0.0.0.0";
1004 #endif
1005
1006 #ifdef HAVE_LOCAL_SCAN
1007 uschar *local_scan_data        = NULL;
1008 int     local_scan_timeout     = 5*60;
1009 #endif
1010 gid_t   local_user_gid         = (gid_t)(-1);
1011 uid_t   local_user_uid         = (uid_t)(-1);
1012
1013 tree_node *localpartlist_anchor= NULL;
1014 int     localpartlist_count    = 0;
1015 uschar *log_buffer             = NULL;
1016
1017 int     log_default[]          = { /* for initializing log_selector */
1018   Li_acl_warn_skipped,
1019   Li_connection_reject,
1020   Li_delay_delivery,
1021   Li_dkim,
1022   Li_dnslist_defer,
1023   Li_etrn,
1024   Li_host_lookup_failed,
1025   Li_lost_incoming_connection,
1026   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1027   Li_msg_id,
1028   Li_queue_run,
1029   Li_rejected_header,
1030   Li_retry_defer,
1031   Li_sender_verify_fail,
1032   Li_size_reject,
1033   Li_skip_delivery,
1034   Li_smtp_confirmation,
1035   Li_tls_certificate_verified,
1036   Li_tls_cipher,
1037   -1
1038 };
1039
1040 uschar *log_file_path          = US LOG_FILE_PATH
1041                            "\0<--------------Space to patch log_file_path->";
1042
1043 int     log_notall[]           = {
1044   -1
1045 };
1046 bit_table log_options[]        = { /* must be in alphabetical order,
1047                                 with definitions from enum logbit. */
1048   BIT_TABLE(L, 8bitmime),
1049   BIT_TABLE(L, acl_warn_skipped),
1050   BIT_TABLE(L, address_rewrite),
1051   BIT_TABLE(L, all),
1052   BIT_TABLE(L, all_parents),
1053   BIT_TABLE(L, arguments),
1054   BIT_TABLE(L, connection_reject),
1055   BIT_TABLE(L, delay_delivery),
1056   BIT_TABLE(L, deliver_time),
1057   BIT_TABLE(L, delivery_size),
1058 #ifndef DISABLE_DKIM
1059   BIT_TABLE(L, dkim),
1060   BIT_TABLE(L, dkim_verbose),
1061 #endif
1062   BIT_TABLE(L, dnslist_defer),
1063   BIT_TABLE(L, dnssec),
1064   BIT_TABLE(L, etrn),
1065   BIT_TABLE(L, host_lookup_failed),
1066   BIT_TABLE(L, ident_timeout),
1067   BIT_TABLE(L, incoming_interface),
1068   BIT_TABLE(L, incoming_port),
1069   BIT_TABLE(L, lost_incoming_connection),
1070   BIT_TABLE(L, millisec),
1071   BIT_TABLE(L, msg_id),
1072   BIT_TABLE(L, msg_id_created),
1073   BIT_TABLE(L, outgoing_interface),
1074   BIT_TABLE(L, outgoing_port),
1075   BIT_TABLE(L, pid),
1076   BIT_TABLE(L, pipelining),
1077 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1078   BIT_TABLE(L, proxy),
1079 #endif
1080   BIT_TABLE(L, queue_run),
1081   BIT_TABLE(L, queue_time),
1082   BIT_TABLE(L, queue_time_overall),
1083   BIT_TABLE(L, receive_time),
1084   BIT_TABLE(L, received_recipients),
1085   BIT_TABLE(L, received_sender),
1086   BIT_TABLE(L, rejected_header),
1087   { US"rejected_headers", Li_rejected_header },
1088   BIT_TABLE(L, retry_defer),
1089   BIT_TABLE(L, return_path_on_delivery),
1090   BIT_TABLE(L, sender_on_delivery),
1091   BIT_TABLE(L, sender_verify_fail),
1092   BIT_TABLE(L, size_reject),
1093   BIT_TABLE(L, skip_delivery),
1094   BIT_TABLE(L, smtp_confirmation),
1095   BIT_TABLE(L, smtp_connection),
1096   BIT_TABLE(L, smtp_incomplete_transaction),
1097   BIT_TABLE(L, smtp_mailauth),
1098   BIT_TABLE(L, smtp_no_mail),
1099   BIT_TABLE(L, smtp_protocol_error),
1100   BIT_TABLE(L, smtp_syntax_error),
1101   BIT_TABLE(L, subject),
1102   BIT_TABLE(L, tls_certificate_verified),
1103   BIT_TABLE(L, tls_cipher),
1104   BIT_TABLE(L, tls_peerdn),
1105   BIT_TABLE(L, tls_resumption),
1106   BIT_TABLE(L, tls_sni),
1107   BIT_TABLE(L, unknown_in_list),
1108 };
1109 int     log_options_count      = nelem(log_options);
1110
1111 int     log_reject_target      = 0;
1112 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1113 uschar *log_selector_string    = NULL;
1114 FILE   *log_stderr             = NULL;
1115 uschar *login_sender_address   = NULL;
1116 uschar *lookup_dnssec_authenticated = NULL;
1117 int     lookup_open_max        = 25;
1118 uschar *lookup_value           = NULL;
1119
1120 macro_item *macros_user        = NULL;
1121 uschar *mailstore_basename     = NULL;
1122 #ifdef WITH_CONTENT_SCAN
1123 uschar *malware_name           = NULL;  /* Virus Name */
1124 #endif
1125 int     max_received_linelength= 0;
1126 int     max_username_length    = 0;
1127 int     message_age            = 0;
1128 uschar *message_body           = NULL;
1129 uschar *message_body_end       = NULL;
1130 int     message_body_size      = 0;
1131 int     message_body_visible   = 500;
1132 int     message_ended          = END_NOTSTARTED;
1133 uschar *message_headers        = NULL;
1134 uschar *message_id;
1135 uschar *message_id_domain      = NULL;
1136 uschar *message_id_text        = NULL;
1137 struct timeval message_id_tv   = { 0, 0 };
1138 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1139 uschar *message_id_external;
1140 int     message_linecount      = 0;
1141 int     message_size           = 0;
1142 uschar *message_size_limit     = US"50M";
1143 #ifdef SUPPORT_I18N
1144 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1145 #endif
1146 uschar  message_subdir[2]      = { 0, 0 };
1147 uschar *message_reference      = NULL;
1148
1149 /* MIME ACL expandables */
1150 #ifdef WITH_CONTENT_SCAN
1151 int     mime_anomaly_level     = 0;
1152 const uschar *mime_anomaly_text      = NULL;
1153 uschar *mime_boundary          = NULL;
1154 uschar *mime_charset           = NULL;
1155 uschar *mime_content_description = NULL;
1156 uschar *mime_content_disposition = NULL;
1157 uschar *mime_content_id        = NULL;
1158 unsigned int mime_content_size = 0;
1159 uschar *mime_content_transfer_encoding = NULL;
1160 uschar *mime_content_type      = NULL;
1161 uschar *mime_decoded_filename  = NULL;
1162 uschar *mime_filename          = NULL;
1163 int     mime_is_multipart      = 0;
1164 int     mime_is_coverletter    = 0;
1165 int     mime_is_rfc822         = 0;
1166 int     mime_part_count        = -1;
1167 #endif
1168
1169 uid_t  *never_users            = NULL;
1170 uschar *notifier_socket        = US"$spool_directory/" NOTIFIER_SOCKET_NAME ;
1171
1172 const int on                   = 1;     /* for setsockopt */
1173 const int off                  = 0;
1174
1175 uid_t   original_euid;
1176 gid_t   originator_gid;
1177 uschar *originator_login       = NULL;
1178 uschar *originator_name        = NULL;
1179 uid_t   originator_uid;
1180 uschar *override_local_interfaces = NULL;
1181 uschar *override_pid_file_path = NULL;
1182
1183 uschar *percent_hack_domains   = NULL;
1184 uschar *pid_file_path          = US PID_FILE_PATH
1185                            "\0<--------------Space to patch pid_file_path->";
1186 #ifndef DISABLE_PIPE_CONNECT
1187 uschar *pipe_connect_advertise_hosts = US"*";
1188 #endif
1189 uschar *pipelining_advertise_hosts = US"*";
1190 uschar *primary_hostname       = NULL;
1191 uschar *process_info;
1192 int     process_info_len       = 0;
1193 uschar *process_log_path       = NULL;
1194 const uschar *process_purpose  = US"fresh-exec";
1195
1196 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1197 uschar *hosts_proxy            = NULL;
1198 uschar *proxy_external_address = NULL;
1199 int     proxy_external_port    = 0;
1200 uschar *proxy_local_address    = NULL;
1201 int     proxy_local_port       = 0;
1202 #endif
1203
1204 uschar *prvscheck_address      = NULL;
1205 uschar *prvscheck_keynum       = NULL;
1206 uschar *prvscheck_result       = NULL;
1207
1208
1209 const uschar *qualify_domain_recipient = NULL;
1210 uschar *qualify_domain_sender  = NULL;
1211 uschar *queue_domains          = NULL;
1212 int     queue_interval         = -1;
1213 uschar *queue_name             = US"";
1214 uschar *queue_name_dest        = NULL;
1215 uschar *queue_only_file        = NULL;
1216 int     queue_only_load        = -1;
1217 uschar *queue_run_max          = US"5";
1218 pid_t   queue_run_pid          = (pid_t)0;
1219 int     queue_run_pipe         = -1;
1220 unsigned queue_size            = 0;
1221 time_t  queue_size_next        = 0;
1222 uschar *queue_smtp_domains     = NULL;
1223
1224 uint32_t random_seed           = 0;
1225 tree_node *ratelimiters_cmd    = NULL;
1226 tree_node *ratelimiters_conn   = NULL;
1227 tree_node *ratelimiters_mail   = NULL;
1228 uschar *raw_active_hostname    = NULL;
1229 uschar *raw_sender             = NULL;
1230 uschar **raw_recipients        = NULL;
1231 int     raw_recipients_count   = 0;
1232
1233 int     rcpt_count             = 0;
1234 int     rcpt_fail_count        = 0;
1235 int     rcpt_defer_count       = 0;
1236 gid_t   real_gid;
1237 uid_t   real_uid;
1238 int     receive_linecount      = 0;
1239 int     receive_messagecount   = 0;
1240 int     receive_timeout        = 0;
1241 int     received_count         = 0;
1242 uschar *received_for           = NULL;
1243
1244 /*  This is the default text for Received headers generated by Exim. The
1245 date  will be automatically added on the end. */
1246
1247 uschar *received_header_text   = US
1248      "Received: "
1249      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1250        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1251          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1252      "by $primary_hostname "
1253      "${if def:received_protocol {with $received_protocol }}"
1254 #ifndef DISABLE_TLS
1255      "${if def:tls_in_ver        { ($tls_in_ver)}}"
1256      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1257 #endif
1258      "(Exim $version_number)\n\t"
1259      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1260      "id $message_exim_id"
1261      "${if def:received_for {\n\tfor $received_for}}"
1262      "\0<---------------Space to patch received_header_text->";
1263
1264 int     received_headers_max   = 30;
1265 uschar *received_protocol      = NULL;
1266 struct timeval received_time   = { 0, 0 };
1267 struct timeval received_time_taken = { 0, 0 };
1268 uschar *recipient_data         = NULL;
1269 uschar *recipient_unqualified_hosts = NULL;
1270 uschar *recipient_verify_failure = NULL;
1271 int     recipients_count       = 0;
1272 recipient_item  *recipients_list = NULL;
1273 int     recipients_list_max    = 0;
1274 int     recipients_max         = 0;
1275 const pcre *regex_AUTH         = NULL;
1276 const pcre *regex_check_dns_names = NULL;
1277 const pcre *regex_From         = NULL;
1278 const pcre *regex_IGNOREQUOTA  = NULL;
1279 const pcre *regex_PIPELINING   = NULL;
1280 const pcre *regex_SIZE         = NULL;
1281 #ifndef DISABLE_PIPE_CONNECT
1282 const pcre *regex_EARLY_PIPE   = NULL;
1283 #endif
1284 const pcre *regex_ismsgid      = NULL;
1285 const pcre *regex_smtp_code    = NULL;
1286 uschar *regex_vars[REGEX_VARS];
1287 #ifdef WHITELIST_D_MACROS
1288 const pcre *regex_whitelisted_macro = NULL;
1289 #endif
1290 #ifdef WITH_CONTENT_SCAN
1291 uschar *regex_match_string     = NULL;
1292 #endif
1293 int     remote_delivery_count  = 0;
1294 int     remote_max_parallel    = 2;
1295 uschar *remote_sort_domains    = NULL;
1296 int     retry_data_expire      = 7*24*60*60;
1297 int     retry_interval_max     = 24*60*60;
1298 int     retry_maximum_timeout  = 0;        /* set from retry config */
1299 retry_config  *retries         = NULL;
1300 uschar *return_path            = NULL;
1301 int     rewrite_existflags     = 0;
1302 uschar *rfc1413_hosts          = US"@[]";
1303 int     rfc1413_query_timeout  = 0;
1304 uid_t   root_gid               = ROOT_GID;
1305 uid_t   root_uid               = ROOT_UID;
1306
1307 router_instance  *routers  = NULL;
1308 router_instance  router_defaults = {
1309     .next =                     NULL,
1310     .name =                     NULL,
1311     .info =                     NULL,
1312     .options_block =            NULL,
1313     .driver_name =              NULL,
1314
1315     .address_data =             NULL,
1316 #ifdef EXPERIMENTAL_BRIGHTMAIL
1317     .bmi_rule =                 NULL,
1318 #endif
1319     .cannot_route_message =     NULL,
1320     .condition =                NULL,
1321     .current_directory =        NULL,
1322     .debug_string =             NULL,
1323     .domains =                  NULL,
1324     .errors_to =                NULL,
1325     .expand_gid =               NULL,
1326     .expand_uid =               NULL,
1327     .expand_more =              NULL,
1328     .expand_unseen =            NULL,
1329     .extra_headers =            NULL,
1330     .fallback_hosts =           NULL,
1331     .home_directory =           NULL,
1332     .ignore_target_hosts =      NULL,
1333     .local_parts =              NULL,
1334     .pass_router_name =         NULL,
1335     .prefix =                   NULL,
1336     .redirect_router_name =     NULL,
1337     .remove_headers =           NULL,
1338     .require_files =            NULL,
1339     .router_home_directory =    NULL,
1340     .self =                     US"freeze",
1341     .senders =                  NULL,
1342     .suffix =                   NULL,
1343     .translate_ip_address =     NULL,
1344     .transport_name =           NULL,
1345
1346     .address_test =             TRUE,
1347 #ifdef EXPERIMENTAL_BRIGHTMAIL
1348     .bmi_deliver_alternate =    FALSE,
1349     .bmi_deliver_default =      FALSE,
1350     .bmi_dont_deliver =         FALSE,
1351 #endif
1352     .expn =                     TRUE,
1353     .caseful_local_part =       FALSE,
1354     .check_local_user =         FALSE,
1355     .disable_logging =          FALSE,
1356     .fail_verify_recipient =    FALSE,
1357     .fail_verify_sender =       FALSE,
1358     .gid_set =                  FALSE,
1359     .initgroups =               FALSE,
1360     .log_as_local =             TRUE_UNSET,
1361     .more =                     TRUE,
1362     .pass_on_timeout =          FALSE,
1363     .prefix_optional =          FALSE,
1364     .repeat_use =               TRUE,
1365     .retry_use_local_part =     TRUE_UNSET,
1366     .same_domain_copy_routing = FALSE,
1367     .self_rewrite =             FALSE,
1368     .set =                      NULL,
1369     .suffix_optional =          FALSE,
1370     .verify_only =              FALSE,
1371     .verify_recipient =         TRUE,
1372     .verify_sender =            TRUE,
1373     .uid_set =                  FALSE,
1374     .unseen =                   FALSE,
1375     .dsn_lasthop =              FALSE,
1376
1377     .self_code =                self_freeze,
1378     .uid =                      (uid_t)(-1),
1379     .gid =                      (gid_t)(-1),
1380
1381     .fallback_hostlist =        NULL,
1382     .transport =                NULL,
1383     .pass_router =              NULL,
1384     .redirect_router =          NULL,
1385
1386     .dnssec =                   { .request= US"*", .require=NULL },
1387 };
1388
1389 uschar *router_name            = NULL;
1390 tree_node *router_var          = NULL;
1391
1392 ip_address_item *running_interfaces = NULL;
1393
1394 /* This is a weird one. The following string gets patched in the binary by the
1395 script that sets up a copy of Exim for running in the test harness. It seems
1396 that compilers are now clever, and share constant strings if they can.
1397 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1398 make use of the end of this string in order to save space. So the patching then
1399 wrecks this. We defeat this optimization by adding some additional characters
1400 onto the end of the string. */
1401
1402 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1403
1404 int     runrc                  = 0;
1405
1406 uschar *search_error_message   = NULL;
1407 uschar *self_hostname          = NULL;
1408 uschar *sender_address         = NULL;
1409 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1410 uschar *sender_address_data    = NULL;
1411 uschar *sender_address_unrewritten = NULL;
1412 uschar *sender_data            = NULL;
1413 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1414 uschar *sender_fullhost        = NULL;
1415 uschar *sender_helo_name       = NULL;
1416 uschar **sender_host_aliases   = &no_aliases;
1417 uschar *sender_host_address    = NULL;
1418 uschar *sender_host_authenticated = NULL;
1419 uschar *sender_host_auth_pubname  = NULL;
1420 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1421 uschar *sender_host_name       = NULL;
1422 int     sender_host_port       = 0;
1423 uschar *sender_ident           = NULL;
1424 uschar *sender_rate            = NULL;
1425 uschar *sender_rate_limit      = NULL;
1426 uschar *sender_rate_period     = NULL;
1427 uschar *sender_rcvhost         = NULL;
1428 uschar *sender_unqualified_hosts = NULL;
1429 uschar *sender_verify_failure = NULL;
1430 address_item *sender_verified_list  = NULL;
1431 address_item *sender_verified_failed = NULL;
1432 int     sender_verified_rc     = -1;
1433 uschar *sending_ip_address     = NULL;
1434 int     sending_port           = -1;
1435 SIGNAL_BOOL sigalrm_seen       = FALSE;
1436 const uschar *sigalarm_setter  = NULL;
1437 uschar **sighup_argv           = NULL;
1438 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1439 int     smtp_accept_count      = 0;
1440 int     smtp_accept_max        = 20;
1441 int     smtp_accept_max_nonmail= 10;
1442 uschar *smtp_accept_max_nonmail_hosts = US"*";
1443 int     smtp_accept_max_per_connection = 1000;
1444 uschar *smtp_accept_max_per_host = NULL;
1445 int     smtp_accept_queue      = 0;
1446 int     smtp_accept_queue_per_connection = 10;
1447 int     smtp_accept_reserve    = 0;
1448 uschar *smtp_active_hostname   = NULL;
1449 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1450                              "Exim $version_number $tod_full"
1451                              "\0<---------------Space to patch smtp_banner->";
1452 int     smtp_ch_index          = 0;
1453 uschar *smtp_cmd_argument      = NULL;
1454 uschar *smtp_cmd_buffer        = NULL;
1455 struct timeval smtp_connection_start  = {0,0};
1456 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1457 int     smtp_connect_backlog   = 20;
1458 double  smtp_delay_mail        = 0.0;
1459 double  smtp_delay_rcpt        = 0.0;
1460 FILE   *smtp_in                = NULL;
1461 int     smtp_load_reserve      = -1;
1462 int     smtp_mailcmd_count     = 0;
1463 FILE   *smtp_out               = NULL;
1464 uschar *smtp_etrn_command      = NULL;
1465 int     smtp_max_synprot_errors= 3;
1466 int     smtp_max_unknown_commands = 3;
1467 uschar *smtp_notquit_reason    = NULL;
1468 uschar *smtp_ratelimit_hosts   = NULL;
1469 uschar *smtp_ratelimit_mail    = NULL;
1470 uschar *smtp_ratelimit_rcpt    = NULL;
1471 uschar *smtp_read_error        = US"";
1472 int     smtp_receive_timeout   = 5*60;
1473 uschar *smtp_receive_timeout_s = NULL;
1474 uschar *smtp_reserve_hosts     = NULL;
1475 int     smtp_rlm_base          = 0;
1476 double  smtp_rlm_factor        = 0.0;
1477 int     smtp_rlm_limit         = 0;
1478 int     smtp_rlm_threshold     = INT_MAX;
1479 int     smtp_rlr_base          = 0;
1480 double  smtp_rlr_factor        = 0.0;
1481 int     smtp_rlr_limit         = 0;
1482 int     smtp_rlr_threshold     = INT_MAX;
1483 unsigned smtp_peer_options     = 0;
1484 unsigned smtp_peer_options_wrap= 0;
1485 #ifdef SUPPORT_I18N
1486 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1487 #endif
1488
1489 #ifdef WITH_CONTENT_SCAN
1490 uschar *spamd_address          = US"127.0.0.1 783";
1491 uschar *spam_bar               = NULL;
1492 uschar *spam_report            = NULL;
1493 uschar *spam_action            = NULL;
1494 uschar *spam_score             = NULL;
1495 uschar *spam_score_int         = NULL;
1496 #endif
1497 #ifdef SUPPORT_SPF
1498 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1499 uschar *spf_header_comment     = NULL;
1500 uschar *spf_received           = NULL;
1501 uschar *spf_result             = NULL;
1502 uschar *spf_smtp_comment       = NULL;
1503 #endif
1504
1505 FILE   *spool_data_file        = NULL;
1506 uschar *spool_directory        = US SPOOL_DIRECTORY
1507                            "\0<--------------Space to patch spool_directory->";
1508 #ifdef EXPERIMENTAL_SRS
1509 uschar *srs_config             = NULL;
1510 uschar *srs_db_address         = NULL;
1511 uschar *srs_db_key             = NULL;
1512 int     srs_hashlength         = 6;
1513 int     srs_hashmin            = -1;
1514 int     srs_maxage             = 31;
1515 uschar *srs_orig_recipient     = NULL;
1516 uschar *srs_orig_sender        = NULL;
1517 uschar *srs_recipient          = NULL;
1518 uschar *srs_secrets            = NULL;
1519 uschar *srs_status             = NULL;
1520 #endif
1521 #ifdef EXPERIMENTAL_SRS_NATIVE
1522 uschar *srs_recipient          = NULL;
1523 #endif
1524 int     string_datestamp_offset= -1;
1525 int     string_datestamp_length= 0;
1526 int     string_datestamp_type  = -1;
1527 uschar *submission_domain      = NULL;
1528 uschar *submission_name        = NULL;
1529 int     syslog_facility        = LOG_MAIL;
1530 uschar *syslog_processname     = US"exim";
1531 uschar *system_filter          = NULL;
1532
1533 uschar *system_filter_directory_transport = NULL;
1534 uschar *system_filter_file_transport = NULL;
1535 uschar *system_filter_pipe_transport = NULL;
1536 uschar *system_filter_reply_transport = NULL;
1537
1538 gid_t   system_filter_gid      = 0;
1539 uid_t   system_filter_uid      = (uid_t)-1;
1540
1541 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1542 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1543 #ifdef USE_TCP_WRAPPERS
1544 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1545 #endif
1546 int     test_harness_load_avg  = 0;
1547 int     thismessage_size_limit = 0;
1548 int     timeout_frozen_after   = 0;
1549 #ifdef MEASURE_TIMING
1550 struct timeval timestamp_startup;
1551 #endif
1552
1553 transport_instance  *transports = NULL;
1554
1555 transport_instance  transport_defaults = {
1556     .next =                     NULL,
1557     .name =                     NULL,
1558     .info =                     NULL,
1559     .options_block =            NULL,
1560     .driver_name =              NULL,
1561     .setup =                    NULL,
1562     .batch_max =                1,
1563     .batch_id =                 NULL,
1564     .home_dir =                 NULL,
1565     .current_dir =              NULL,
1566     .expand_multi_domain =      NULL,
1567     .multi_domain =             TRUE,
1568     .overrides_hosts =          FALSE,
1569     .max_addresses =            100,
1570     .connection_max_messages =  500,
1571     .deliver_as_creator =       FALSE,
1572     .disable_logging =          FALSE,
1573     .initgroups =               FALSE,
1574     .uid_set =                  FALSE,
1575     .gid_set =                  FALSE,
1576     .uid =                      (uid_t)(-1),
1577     .gid =                      (gid_t)(-1),
1578     .expand_uid =               NULL,
1579     .expand_gid =               NULL,
1580     .warn_message =             NULL,
1581     .shadow =                   NULL,
1582     .shadow_condition =         NULL,
1583     .filter_command =           NULL,
1584     .add_headers =              NULL,
1585     .remove_headers =           NULL,
1586     .return_path =              NULL,
1587     .debug_string =             NULL,
1588     .max_parallel =             NULL,
1589     .message_size_limit =       NULL,
1590     .headers_rewrite =          NULL,
1591     .rewrite_rules =            NULL,
1592     .rewrite_existflags =       0,
1593     .filter_timeout =           300,
1594     .body_only =                FALSE,
1595     .delivery_date_add =        FALSE,
1596     .envelope_to_add =          FALSE,
1597     .headers_only =             FALSE,
1598     .rcpt_include_affixes =     FALSE,
1599     .return_path_add =          FALSE,
1600     .return_output =            FALSE,
1601     .return_fail_output =       FALSE,
1602     .log_output =               FALSE,
1603     .log_fail_output =          FALSE,
1604     .log_defer_output =         FALSE,
1605     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1606                                                  1 nor 0 so can detect unset */
1607 #ifndef DISABLE_EVENT
1608    .event_action =              NULL
1609 #endif
1610 };
1611
1612 int     transport_count;
1613 uschar *transport_name          = NULL;
1614 int     transport_newlines;
1615 const uschar **transport_filter_argv  = NULL;
1616 int     transport_filter_timeout;
1617 int     transport_write_timeout= 0;
1618
1619 tree_node  *tree_dns_fails     = NULL;
1620 tree_node  *tree_duplicates    = NULL;
1621 tree_node  *tree_nonrecipients = NULL;
1622 tree_node  *tree_unusable      = NULL;
1623
1624 gid_t  *trusted_groups         = NULL;
1625 uid_t  *trusted_users          = NULL;
1626 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1627
1628 uschar *unknown_login          = NULL;
1629 uschar *unknown_username       = NULL;
1630 uschar *untrusted_set_sender   = NULL;
1631
1632 /*  A regex for matching a "From_" line in an incoming message, in the form
1633
1634     From ph10 Fri Jan  5 12:35 GMT 1996
1635
1636 which  the "mail" commands send to the MTA (undocumented, of course), or in
1637 the  form
1638
1639     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1640
1641 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1642 Because  of variations in time formats, just match up to the minutes. That
1643 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1644 so  just require one digit for hours and minutes. The weekday is also absent
1645 in  some forms. */
1646
1647 uschar *uucp_from_pattern      = US
1648    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1649    "(?:"                                          /* Non-extracting bracket */
1650    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1651    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1652    ")"                                            /* End alternation */
1653    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1654
1655 uschar *uucp_from_sender       = US"$1";
1656
1657 uschar *verify_mode            = NULL;
1658 uschar *version_copyright      =
1659  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1660    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018";
1661 uschar *version_date           = US"?";
1662 uschar *version_cnumber        = US"????";
1663 uschar *version_string         = US"?";
1664
1665 uschar *warn_message_file      = NULL;
1666 int     warning_count          = 0;
1667 uschar *warnmsg_delay          = NULL;
1668 uschar *warnmsg_recipients     = NULL;
1669
1670
1671 /*  End of globals.c */