src/src/globals.c

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