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