src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2018 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8 /* All the global variables are defined together in this one module, so
   9 that they are easy to find. */
  10
  11 #include "exim.h"
  12
  13
  14 /* Generic options for auths, all of which live inside auth_instance
  15 data blocks and hence have the opt_public flag set. */
  16
  17 optionlist optionlist_auths[] = {
  18   { "client_condition", opt_stringptr | opt_public,
  19                  (void *)(offsetof(auth_instance, client_condition)) },
  20   { "client_set_id", opt_stringptr | opt_public,
  21                  (void *)(offsetof(auth_instance, set_client_id)) },
  22   { "driver",        opt_stringptr | opt_public,
  23                  (void *)(offsetof(auth_instance, driver_name)) },
  24   { "public_name",   opt_stringptr | opt_public,
  25                  (void *)(offsetof(auth_instance, public_name)) },
  26   { "server_advertise_condition", opt_stringptr | opt_public,
  27                  (void *)(offsetof(auth_instance, advertise_condition))},
  28   { "server_condition", opt_stringptr | opt_public,
  29                  (void *)(offsetof(auth_instance, server_condition)) },
  30   { "server_debug_print", opt_stringptr | opt_public,
  31                  (void *)(offsetof(auth_instance, server_debug_string)) },
  32   { "server_mail_auth_condition", opt_stringptr | opt_public,
  33                  (void *)(offsetof(auth_instance, mail_auth_condition)) },
  34   { "server_set_id", opt_stringptr | opt_public,
  35                  (void *)(offsetof(auth_instance, set_id)) }
  36 };
  37
  38 int     optionlist_auths_size = nelem(optionlist_auths);
  39
  40 /* An empty host aliases list. */
  41
  42 uschar *no_aliases             = NULL;
  43
  44
  45 /* For comments on these variables, see globals.h. I'm too idle to
  46 duplicate them here... */
  47
  48 #ifdef EXIM_PERL
  49 uschar *opt_perl_startup       = NULL;
  50 BOOL    opt_perl_at_start      = FALSE;
  51 BOOL    opt_perl_started       = FALSE;
  52 BOOL    opt_perl_taintmode     = FALSE;
  53 #endif
  54
  55 #ifdef EXPAND_DLFUNC
  56 tree_node *dlobj_anchor        = NULL;
  57 #endif
  58
  59 #ifdef LOOKUP_IBASE
  60 uschar *ibase_servers          = NULL;
  61 #endif
  62
  63 #ifdef LOOKUP_LDAP
  64 uschar *eldap_ca_cert_dir      = NULL;
  65 uschar *eldap_ca_cert_file     = NULL;
  66 uschar *eldap_cert_file        = NULL;
  67 uschar *eldap_cert_key         = NULL;
  68 uschar *eldap_cipher_suite     = NULL;
  69 uschar *eldap_default_servers  = NULL;
  70 uschar *eldap_require_cert     = NULL;
  71 int     eldap_version          = -1;
  72 BOOL    eldap_start_tls        = FALSE;
  73 #endif
  74
  75 #ifdef LOOKUP_MYSQL
  76 uschar *mysql_servers          = NULL;
  77 #endif
  78
  79 #ifdef LOOKUP_ORACLE
  80 uschar *oracle_servers         = NULL;
  81 #endif
  82
  83 #ifdef LOOKUP_PGSQL
  84 uschar *pgsql_servers          = NULL;
  85 #endif
  86
  87 #ifdef LOOKUP_REDIS
  88 uschar *redis_servers          = NULL;
  89 #endif
  90
  91 #ifdef LOOKUP_SQLITE
  92 int     sqlite_lock_timeout    = 5;
  93 #endif
  94
  95 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  96 BOOL    move_frozen_messages   = FALSE;
  97 #endif
  98
  99 /* These variables are outside the #ifdef because it keeps the code less
 100 cluttered in several places (e.g. during logging) if we can always refer to
 101 them. Also, the tls_ variables are now always visible.  Note that these are
 102 only used for smtp connections, not for service-daemon access. */
 103
 104 tls_support tls_in = {
 105  .active =              {.sock = -1},
 106  .bits =                0,
 107  .certificate_verified = FALSE,
 108 #ifdef SUPPORT_DANE
 109  .dane_verified =       FALSE,
 110  .tlsa_usage =          0,
 111 #endif
 112  .cipher =              NULL,
 113  .on_connect =          FALSE,
 114  .on_connect_ports =    NULL,
 115  .ourcert =             NULL,
 116  .peercert =            NULL,
 117  .peerdn =              NULL,
 118  .sni =                 NULL,
 119  .ocsp =                OCSP_NOT_REQ
 120 };
 121 tls_support tls_out = {
 122  .active =              {.sock = -1},
 123  .bits =                0,
 124  .certificate_verified = FALSE,
 125 #ifdef SUPPORT_DANE
 126  .dane_verified =       FALSE,
 127  .tlsa_usage =          0,
 128 #endif
 129  .cipher =              NULL,
 130  .on_connect =          FALSE,
 131  .on_connect_ports =    NULL,
 132  .ourcert =             NULL,
 133  .peercert =            NULL,
 134  .peerdn =              NULL,
 135  .sni =                 NULL,
 136  .ocsp =                OCSP_NOT_REQ
 137 };
 138
 139 uschar *dsn_envid              = NULL;
 140 int     dsn_ret                = 0;
 141 const pcre  *regex_DSN         = NULL;
 142 uschar *dsn_advertise_hosts    = NULL;
 143
 144 #ifdef SUPPORT_TLS
 145 BOOL    gnutls_compat_mode     = FALSE;
 146 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 147 uschar *openssl_options        = NULL;
 148 const pcre *regex_STARTTLS     = NULL;
 149 uschar *tls_advertise_hosts    = US"*";
 150 uschar *tls_certificate        = NULL;
 151 uschar *tls_crl                = NULL;
 152 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 153 that's the interop problem which has been observed: GnuTLS suggesting a higher
 154 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 155 int     tls_dh_max_bits        = 2236;
 156 uschar *tls_dhparam            = NULL;
 157 uschar *tls_eccurve            = US"auto";
 158 # ifndef DISABLE_OCSP
 159 uschar *tls_ocsp_file          = NULL;
 160 # endif
 161 uschar *tls_privatekey         = NULL;
 162 BOOL    tls_remember_esmtp     = FALSE;
 163 uschar *tls_require_ciphers    = NULL;
 164 # ifdef EXPERIMENTAL_REQUIRETLS
 165 uschar  tls_requiretls         = 0;     /* REQUIRETLS_MSG etc. bit #defines */
 166 uschar *tls_advertise_requiretls = US"*";
 167 const pcre *regex_REQUIRETLS   = NULL;
 168 # endif
 169 uschar *tls_try_verify_hosts   = NULL;
 170 uschar *tls_verify_certificates= US"system";
 171 uschar *tls_verify_hosts       = NULL;
 172 #else   /*!SUPPORT_TLS*/
 173 uschar *tls_advertise_hosts    = NULL;
 174 #endif
 175
 176 #ifndef DISABLE_PRDR
 177 /* Per Recipient Data Response variables */
 178 BOOL    prdr_enable            = FALSE;
 179 BOOL    prdr_requested         = FALSE;
 180 const pcre *regex_PRDR         = NULL;
 181 #endif
 182
 183 #ifdef SUPPORT_I18N
 184 const pcre *regex_UTF8         = NULL;
 185 #endif
 186
 187 /* Input-reading functions for messages, so we can use special ones for
 188 incoming TCP/IP. The defaults use stdin. We never need these for any
 189 stand-alone tests. */
 190
 191 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 192 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 193 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 194 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 195 int (*receive_getc)(unsigned)  = stdin_getc;
 196 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 197 void (*receive_get_cache)(void)= NULL;
 198 int (*receive_ungetc)(int)     = stdin_ungetc;
 199 int (*receive_feof)(void)      = stdin_feof;
 200 int (*receive_ferror)(void)    = stdin_ferror;
 201 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 202 #endif
 203
 204
 205 /* List of per-address expansion variables for clearing and saving/restoring
 206 when verifying one address while routing/verifying another. We have to have
 207 the size explicit, because it is referenced from more than one module. */
 208
 209 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 210   CUSS &deliver_address_data,
 211   CUSS &deliver_domain,
 212   CUSS &deliver_domain_data,
 213   CUSS &deliver_domain_orig,
 214   CUSS &deliver_domain_parent,
 215   CUSS &deliver_localpart,
 216   CUSS &deliver_localpart_data,
 217   CUSS &deliver_localpart_orig,
 218   CUSS &deliver_localpart_parent,
 219   CUSS &deliver_localpart_prefix,
 220   CUSS &deliver_localpart_suffix,
 221   CUSS (uschar **)(&deliver_recipients),
 222   CUSS &deliver_host,
 223   CUSS &deliver_home,
 224   CUSS &address_file,
 225   CUSS &address_pipe,
 226   CUSS &self_hostname,
 227   NULL };
 228
 229 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 230
 231 /******************************************************************************/
 232 /* General global variables.  Boolean flags are done as a group
 233 so that only one bit each is needed, packed, for all those we never
 234 need to take a pointer - and only a char for the rest.
 235 This means a struct, unfortunately since it clutters the sourcecode. */
 236
 237 struct global_flags f =
 238 {
 239         .acl_temp_details       = FALSE,
 240         .active_local_from_check = FALSE,
 241         .active_local_sender_retain = FALSE,
 242         .address_test_mode      = FALSE,
 243         .admin_user             = FALSE,
 244         .allow_auth_unadvertised= FALSE,
 245         .allow_unqualified_recipient = TRUE,    /* For local messages */
 246         .allow_unqualified_sender = TRUE,       /* Reset for SMTP */
 247         .authentication_local   = FALSE,
 248
 249         .background_daemon      = TRUE,
 250
 251         .chunking_offered       = FALSE,
 252         .config_changed         = FALSE,
 253         .continue_more          = FALSE,
 254
 255         .daemon_listen          = FALSE,
 256         .debug_daemon           = FALSE,
 257         .deliver_firsttime      = FALSE,
 258         .deliver_force          = FALSE,
 259         .deliver_freeze         = FALSE,
 260         .deliver_force_thaw     = FALSE,
 261         .deliver_manual_thaw    = FALSE,
 262         .deliver_selectstring_regex = FALSE,
 263         .deliver_selectstring_sender_regex = FALSE,
 264         .disable_callout_flush  = FALSE,
 265         .disable_delay_flush    = FALSE,
 266         .disable_logging        = FALSE,
 267 #ifndef DISABLE_DKIM
 268         .dkim_disable_verify      = FALSE,
 269 #endif
 270 #ifdef EXPERIMENTAL_DMARC
 271         .dmarc_has_been_checked  = FALSE,
 272         .dmarc_disable_verify    = FALSE,
 273         .dmarc_enable_forensic   = FALSE,
 274 #endif
 275         .dont_deliver           = FALSE,
 276         .dot_ends               = TRUE,
 277
 278         .enable_dollar_recipients = FALSE,
 279         .expand_string_forcedfail = FALSE,
 280
 281         .filter_running         = FALSE,
 282
 283         .header_rewritten       = FALSE,
 284         .helo_verified          = FALSE,
 285         .helo_verify_failed     = FALSE,
 286         .host_checking_callout  = FALSE,
 287         .host_find_failed_syntax= FALSE,
 288
 289         .inetd_wait_mode        = FALSE,
 290         .is_inetd               = FALSE,
 291
 292         .local_error_message    = FALSE,
 293         .log_testing_mode       = FALSE,
 294
 295 #ifdef WITH_CONTENT_SCAN
 296         .no_mbox_unspool        = FALSE,
 297 #endif
 298         .no_multiline_responses = FALSE,
 299
 300         .parse_allow_group      = FALSE,
 301         .parse_found_group      = FALSE,
 302         .pipelining_enable      = TRUE,
 303 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 304         .proxy_session_failed   = FALSE,
 305 #endif
 306
 307         .queue_2stage           = FALSE,
 308         .queue_only_policy      = FALSE,
 309         .queue_run_first_delivery = FALSE,
 310         .queue_run_force        = FALSE,
 311         .queue_run_local        = FALSE,
 312         .queue_running          = FALSE,
 313         .queue_smtp             = FALSE,
 314
 315         .really_exim            = TRUE,
 316         .receive_call_bombout   = FALSE,
 317         .recipients_discarded   = FALSE,
 318 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 319         .running_in_test_harness = FALSE,
 320
 321         .search_find_defer      = FALSE,
 322         .sender_address_forced  = FALSE,
 323         .sender_host_notsocket  = FALSE,
 324         .sender_host_unknown    = FALSE,
 325         .sender_local           = FALSE,
 326         .sender_name_forced     = FALSE,
 327         .sender_set_untrusted   = FALSE,
 328 /* BOOL    sender_verified_responded = FALSE; /* never used? */
 329         .smtp_authenticated     = FALSE,
 330         .smtp_in_pipelining_advertised = FALSE,
 331         .smtp_in_pipelining_used = FALSE,
 332         .spool_file_wireformat  = FALSE,
 333         .submission_mode        = FALSE,
 334         .suppress_local_fixups  = FALSE,
 335         .suppress_local_fixups_default = FALSE,
 336         .synchronous_delivery   = FALSE,
 337         .system_filtering       = FALSE,
 338
 339         .tcp_fastopen_ok        = FALSE,
 340         .tcp_in_fastopen        = FALSE,
 341         .tcp_in_fastopen_logged = FALSE,
 342         .tcp_out_fastopen_logged= FALSE,
 343         .timestamps_utc         = FALSE,
 344         .transport_filter_timed_out = FALSE,
 345         .trusted_caller         = FALSE,
 346         .trusted_config         = TRUE,
 347 };
 348
 349 /******************************************************************************/
 350 /* These are the flags which are either variables or mainsection options,
 351 so an address is needed for access, or are exported to local_scan. */
 352
 353 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 354 BOOL    allow_domain_literals  = FALSE;
 355 BOOL    allow_mx_to_ip         = FALSE;
 356 BOOL    allow_utf8_domains     = FALSE;
 357 BOOL    authentication_failed  = FALSE;
 358
 359 BOOL    bounce_return_body     = TRUE;
 360 BOOL    bounce_return_message  = TRUE;
 361 BOOL    check_rfc2047_length   = TRUE;
 362 BOOL    commandline_checks_require_admin = FALSE;
 363
 364 #ifdef EXPERIMENTAL_DCC
 365 BOOL    dcc_direct_add_header  = FALSE;
 366 #endif
 367 BOOL    debug_store            = FALSE;
 368 BOOL    delivery_date_remove   = TRUE;
 369 BOOL    deliver_drop_privilege = FALSE;
 370 #ifdef ENABLE_DISABLE_FSYNC
 371 BOOL    disable_fsync          = FALSE;
 372 #endif
 373 BOOL    disable_ipv6           = FALSE;
 374 BOOL    dns_csa_use_reverse    = TRUE;
 375 BOOL    drop_cr                = FALSE;         /* No longer used */
 376
 377 BOOL    envelope_to_remove     = TRUE;
 378 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 379 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 380 BOOL    extract_addresses_remove_arguments = TRUE;
 381
 382 BOOL    host_checking          = FALSE;
 383 BOOL    host_lookup_deferred   = FALSE;
 384 BOOL    host_lookup_failed     = FALSE;
 385 BOOL    ignore_fromline_local  = FALSE;
 386
 387 BOOL    local_from_check       = TRUE;
 388 BOOL    local_sender_retain    = FALSE;
 389 BOOL    log_timezone           = FALSE;
 390 BOOL    message_body_newlines  = FALSE;
 391 BOOL    message_logs           = TRUE;
 392 #ifdef SUPPORT_I18N
 393 BOOL    message_smtputf8       = FALSE;
 394 #endif
 395 BOOL    mua_wrapper            = FALSE;
 396
 397 BOOL    preserve_message_logs  = FALSE;
 398 BOOL    print_topbitchars      = FALSE;
 399 BOOL    prod_requires_admin    = TRUE;
 400 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 401 BOOL    proxy_session          = FALSE;
 402 #endif
 403
 404 BOOL    queue_list_requires_admin = TRUE;
 405 BOOL    queue_only             = FALSE;
 406 BOOL    queue_only_load_latch  = TRUE;
 407 BOOL    queue_only_override    = TRUE;
 408 BOOL    queue_run_in_order     = FALSE;
 409 BOOL    recipients_max_reject  = FALSE;
 410 BOOL    return_path_remove     = TRUE;
 411
 412 BOOL    smtp_batched_input     = FALSE;
 413 BOOL    sender_helo_dnssec     = FALSE;
 414 BOOL    sender_host_dnssec     = FALSE;
 415 BOOL    smtp_accept_keepalive  = TRUE;
 416 BOOL    smtp_check_spool_space = TRUE;
 417 BOOL    smtp_enforce_sync      = TRUE;
 418 BOOL    smtp_etrn_serialize    = TRUE;
 419 BOOL    smtp_input             = FALSE;
 420 BOOL    smtp_return_error_details = FALSE;
 421 #ifdef SUPPORT_SPF
 422 BOOL    spf_result_guessed     = FALSE;
 423 #endif
 424 BOOL    split_spool_directory  = FALSE;
 425 BOOL    spool_wireformat       = FALSE;
 426 #ifdef EXPERIMENTAL_SRS
 427 BOOL    srs_usehash            = TRUE;
 428 BOOL    srs_usetimestamp       = TRUE;
 429 #endif
 430 BOOL    strict_acl_vars        = FALSE;
 431 BOOL    strip_excess_angle_brackets = FALSE;
 432 BOOL    strip_trailing_dot     = FALSE;
 433 BOOL    syslog_duplication     = TRUE;
 434 BOOL    syslog_pid             = TRUE;
 435 BOOL    syslog_timestamp       = TRUE;
 436 BOOL    system_filter_gid_set  = FALSE;
 437 BOOL    system_filter_uid_set  = FALSE;
 438
 439 BOOL    tcp_nodelay            = TRUE;
 440 BOOL    write_rejectlog        = TRUE;
 441
 442 /******************************************************************************/
 443
 444 header_line *acl_added_headers = NULL;
 445 tree_node *acl_anchor          = NULL;
 446 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 447                                   NULL, NULL, NULL, NULL};
 448 int     acl_narg               = 0;
 449
 450 int     acl_level              = 0;
 451
 452 uschar *acl_not_smtp           = NULL;
 453 #ifdef WITH_CONTENT_SCAN
 454 uschar *acl_not_smtp_mime      = NULL;
 455 #endif
 456 uschar *acl_not_smtp_start     = NULL;
 457 uschar *acl_removed_headers    = NULL;
 458 uschar *acl_smtp_auth          = NULL;
 459 uschar *acl_smtp_connect       = NULL;
 460 uschar *acl_smtp_data          = NULL;
 461 #ifndef DISABLE_PRDR
 462 uschar *acl_smtp_data_prdr     = US"accept";
 463 #endif
 464 #ifndef DISABLE_DKIM
 465 uschar *acl_smtp_dkim          = NULL;
 466 #endif
 467 uschar *acl_smtp_etrn          = NULL;
 468 uschar *acl_smtp_expn          = NULL;
 469 uschar *acl_smtp_helo          = NULL;
 470 uschar *acl_smtp_mail          = NULL;
 471 uschar *acl_smtp_mailauth      = NULL;
 472 #ifdef WITH_CONTENT_SCAN
 473 uschar *acl_smtp_mime          = NULL;
 474 #endif
 475 uschar *acl_smtp_notquit       = NULL;
 476 uschar *acl_smtp_predata       = NULL;
 477 uschar *acl_smtp_quit          = NULL;
 478 uschar *acl_smtp_rcpt          = NULL;
 479 uschar *acl_smtp_starttls      = NULL;
 480 uschar *acl_smtp_vrfy          = NULL;
 481
 482 tree_node *acl_var_c           = NULL;
 483 tree_node *acl_var_m           = NULL;
 484 uschar *acl_verify_message     = NULL;
 485 string_item *acl_warn_logged   = NULL;
 486
 487 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 488 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 489
 490 uschar *acl_wherenames[]       = { US"RCPT",
 491                                    US"MAIL",
 492                                    US"PREDATA",
 493                                    US"MIME",
 494                                    US"DKIM",
 495                                    US"DATA",
 496 #ifndef DISABLE_PRDR
 497                                    US"PRDR",
 498 #endif
 499                                    US"non-SMTP",
 500                                    US"AUTH",
 501                                    US"connection",
 502                                    US"ETRN",
 503                                    US"EXPN",
 504                                    US"EHLO or HELO",
 505                                    US"MAILAUTH",
 506                                    US"non-SMTP-start",
 507                                    US"NOTQUIT",
 508                                    US"QUIT",
 509                                    US"STARTTLS",
 510                                    US"VRFY",
 511                                    US"delivery",
 512                                    US"unknown"
 513                                  };
 514
 515 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 516                                    US"550",     /* MAIL */
 517                                    US"550",     /* PREDATA */
 518                                    US"550",     /* MIME */
 519                                    US"550",     /* DKIM */
 520                                    US"550",     /* DATA */
 521 #ifndef DISABLE_PRDR
 522                                    US"550",    /* RCPT PRDR */
 523 #endif
 524                                    US"0",       /* not SMTP; not relevant */
 525                                    US"503",     /* AUTH */
 526                                    US"550",     /* connect */
 527                                    US"458",     /* ETRN */
 528                                    US"550",     /* EXPN */
 529                                    US"550",     /* HELO/EHLO */
 530                                    US"0",       /* MAILAUTH; not relevant */
 531                                    US"0",       /* not SMTP; not relevant */
 532                                    US"0",       /* NOTQUIT; not relevant */
 533                                    US"0",       /* QUIT; not relevant */
 534                                    US"550",     /* STARTTLS */
 535                                    US"252",     /* VRFY */
 536                                    US"0",       /* delivery; not relevant */
 537                                    US"0"        /* unknown; not relevant */
 538                                  };
 539
 540 uschar *add_environment        = NULL;
 541 address_item  *addr_duplicate  = NULL;
 542
 543 address_item address_defaults = {
 544   .next =               NULL,
 545   .parent =             NULL,
 546   .first =              NULL,
 547   .dupof =              NULL,
 548   .start_router =       NULL,
 549   .router =             NULL,
 550   .transport =          NULL,
 551   .host_list =          NULL,
 552   .host_used =          NULL,
 553   .fallback_hosts =     NULL,
 554   .reply =              NULL,
 555   .retries =            NULL,
 556   .address =            NULL,
 557   .unique =             NULL,
 558   .cc_local_part =      NULL,
 559   .lc_local_part =      NULL,
 560   .local_part =         NULL,
 561   .prefix =             NULL,
 562   .suffix =             NULL,
 563   .domain =             NULL,
 564   .address_retry_key =  NULL,
 565   .domain_retry_key =   NULL,
 566   .current_dir =        NULL,
 567   .home_dir =           NULL,
 568   .message =            NULL,
 569   .user_message =       NULL,
 570   .onetime_parent =     NULL,
 571   .pipe_expandn =       NULL,
 572   .return_filename =    NULL,
 573   .self_hostname =      NULL,
 574   .shadow_message =     NULL,
 575 #ifdef SUPPORT_TLS
 576   .cipher =             NULL,
 577   .ourcert =            NULL,
 578   .peercert =           NULL,
 579   .peerdn =             NULL,
 580   .ocsp =               OCSP_NOT_REQ,
 581 #endif
 582 #ifdef EXPERIMENTAL_DSN_INFO
 583   .smtp_greeting =      NULL,
 584   .helo_response =      NULL,
 585 #endif
 586   .authenticator =      NULL,
 587   .auth_id =            NULL,
 588   .auth_sndr =          NULL,
 589   .dsn_orcpt =          NULL,
 590   .dsn_flags =          0,
 591   .dsn_aware =          0,
 592   .uid =                (uid_t)(-1),
 593   .gid =                (gid_t)(-1),
 594   .flags =              { 0 },
 595   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 596   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 597   .mode =               -1,
 598   .more_errno =         0,
 599   .delivery_usec =      0,
 600   .basic_errno =        ERRNO_UNKNOWNERROR,
 601   .child_count =        0,
 602   .return_file =        -1,
 603   .special_action =     SPECIAL_NONE,
 604   .transport_return =   DEFER,
 605   .prop = {                                     /* fields that are propagated to children */
 606     .address_data =     NULL,
 607     .domain_data =      NULL,
 608     .localpart_data =   NULL,
 609     .errors_address =   NULL,
 610     .extra_headers =    NULL,
 611     .remove_headers =   NULL,
 612 #ifdef EXPERIMENTAL_SRS
 613     .srs_sender =       NULL,
 614 #endif
 615     .ignore_error =     FALSE,
 616 #ifdef SUPPORT_I18N
 617     .utf8_msg =         FALSE,
 618     .utf8_downcvt =     FALSE,
 619     .utf8_downcvt_maybe = FALSE
 620 #endif
 621   }
 622 };
 623
 624 uschar *address_file           = NULL;
 625 uschar *address_pipe           = NULL;
 626 tree_node *addresslist_anchor  = NULL;
 627 int     addresslist_count      = 0;
 628 gid_t  *admin_groups           = NULL;
 629
 630 #ifdef EXPERIMENTAL_ARC
 631 struct arc_set *arc_received    = NULL;
 632 int     arc_received_instance   = 0;
 633 int     arc_oldest_pass         = 0;
 634 const uschar *arc_state         = NULL;
 635 const uschar *arc_state_reason  = NULL;
 636 #endif
 637
 638 uschar *authenticated_fail_id  = NULL;
 639 uschar *authenticated_id       = NULL;
 640 uschar *authenticated_sender   = NULL;
 641 auth_instance  *auths          = NULL;
 642 uschar *auth_advertise_hosts   = US"*";
 643 auth_instance auth_defaults    = {
 644     .next =             NULL,
 645     .name =             NULL,
 646     .info =             NULL,
 647     .options_block =    NULL,
 648     .driver_name =      NULL,
 649     .advertise_condition = NULL,
 650     .client_condition = NULL,
 651     .public_name =      NULL,
 652     .set_id =           NULL,
 653     .set_client_id =    NULL,
 654     .mail_auth_condition = NULL,
 655     .server_debug_string = NULL,
 656     .server_condition = NULL,
 657     .client =           FALSE,
 658     .server =           FALSE,
 659     .advertised =       FALSE
 660 };
 661
 662 uschar *auth_defer_msg         = US"reason not recorded";
 663 uschar *auth_defer_user_msg    = US"";
 664 uschar *auth_vars[AUTH_VARS];
 665 int     auto_thaw              = 0;
 666 #ifdef WITH_CONTENT_SCAN
 667 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 668 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 669 #endif
 670
 671 #if BASE_62 == 62
 672 uschar *base62_chars=
 673     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 674 #else
 675 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 676 #endif
 677
 678 uschar *bi_command             = NULL;
 679 uschar *big_buffer             = NULL;
 680 int     big_buffer_size        = BIG_BUFFER_SIZE;
 681 #ifdef EXPERIMENTAL_BRIGHTMAIL
 682 uschar *bmi_alt_location       = NULL;
 683 uschar *bmi_base64_tracker_verdict = NULL;
 684 uschar *bmi_base64_verdict     = NULL;
 685 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 686 int     bmi_deliver            = 1;
 687 int     bmi_run                = 0;
 688 uschar *bmi_verdicts           = NULL;
 689 #endif
 690 int     bsmtp_transaction_linecount = 0;
 691 int     body_8bitmime          = 0;
 692 int     body_linecount         = 0;
 693 int     body_zerocount         = 0;
 694 uschar *bounce_message_file    = NULL;
 695 uschar *bounce_message_text    = NULL;
 696 uschar *bounce_recipient       = NULL;
 697 int     bounce_return_linesize_limit = 998;
 698 int     bounce_return_size_limit = 100*1024;
 699 uschar *bounce_sender_authentication = NULL;
 700
 701 uschar *callout_address        = NULL;
 702 int     callout_cache_domain_positive_expire = 7*24*60*60;
 703 int     callout_cache_domain_negative_expire = 3*60*60;
 704 int     callout_cache_positive_expire = 24*60*60;
 705 int     callout_cache_negative_expire = 2*60*60;
 706 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 707 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 708 int     check_log_inodes       = 100;
 709 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 710 int     check_spool_inodes     = 100;
 711 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 712
 713 uschar *chunking_advertise_hosts = US"*";
 714 unsigned chunking_datasize     = 0;
 715 unsigned chunking_data_left    = 0;
 716 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 717 const pcre *regex_CHUNKING     = NULL;
 718
 719 uschar *client_authenticator   = NULL;
 720 uschar *client_authenticated_id = NULL;
 721 uschar *client_authenticated_sender = NULL;
 722 int     clmacro_count          = 0;
 723 uschar *clmacros[MAX_CLMACROS];
 724 FILE   *config_file            = NULL;
 725 const uschar *config_filename  = NULL;
 726 int     config_lineno          = 0;
 727 #ifdef CONFIGURE_GROUP
 728 gid_t   config_gid             = CONFIGURE_GROUP;
 729 #else
 730 gid_t   config_gid             = 0;
 731 #endif
 732 uschar *config_main_filelist   = US CONFIGURE_FILE
 733                          "\0<-----------Space to patch configure_filename->";
 734 uschar *config_main_filename   = NULL;
 735 uschar *config_main_directory  = NULL;
 736
 737 #ifdef CONFIGURE_OWNER
 738 uid_t   config_uid             = CONFIGURE_OWNER;
 739 #else
 740 uid_t   config_uid             = 0;
 741 #endif
 742
 743 int     connection_max_messages= -1;
 744 uschar *continue_proxy_cipher  = NULL;
 745 uschar *continue_hostname      = NULL;
 746 uschar *continue_host_address  = NULL;
 747 int     continue_sequence      = 1;
 748 uschar *continue_transport     = NULL;
 749
 750 uschar *csa_status             = NULL;
 751 cut_t   cutthrough = {
 752   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 753   .delivery =           FALSE,                          /* when to attempt */
 754   .defer_pass =         FALSE,                          /* on defer: spool locally */
 755   .is_tls =             FALSE,                          /* not a TLS conn yet */
 756   .cctx =               {.sock = -1},                   /* open connection */
 757   .nrcpt =              0,                              /* number of addresses */
 758 };
 759
 760 uschar *daemon_smtp_port       = US"smtp";
 761 int     daemon_startup_retries = 9;
 762 int     daemon_startup_sleep   = 30;
 763
 764 #ifdef EXPERIMENTAL_DCC
 765 uschar *dcc_header             = NULL;
 766 uschar *dcc_result             = NULL;
 767 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 768 uschar *dccifd_options         = US"header";
 769 #endif
 770
 771 int     debug_fd               = -1;
 772 FILE   *debug_file             = NULL;
 773 int     debug_notall[]         = {
 774   Di_memory,
 775   -1
 776 };
 777 bit_table debug_options[]      = { /* must be in alphabetical order */
 778   BIT_TABLE(D, acl),
 779   BIT_TABLE(D, all),
 780   BIT_TABLE(D, auth),
 781   BIT_TABLE(D, deliver),
 782   BIT_TABLE(D, dns),
 783   BIT_TABLE(D, dnsbl),
 784   BIT_TABLE(D, exec),
 785   BIT_TABLE(D, expand),
 786   BIT_TABLE(D, filter),
 787   BIT_TABLE(D, hints_lookup),
 788   BIT_TABLE(D, host_lookup),
 789   BIT_TABLE(D, ident),
 790   BIT_TABLE(D, interface),
 791   BIT_TABLE(D, lists),
 792   BIT_TABLE(D, load),
 793   BIT_TABLE(D, local_scan),
 794   BIT_TABLE(D, lookup),
 795   BIT_TABLE(D, memory),
 796   BIT_TABLE(D, pid),
 797   BIT_TABLE(D, process_info),
 798   BIT_TABLE(D, queue_run),
 799   BIT_TABLE(D, receive),
 800   BIT_TABLE(D, resolver),
 801   BIT_TABLE(D, retry),
 802   BIT_TABLE(D, rewrite),
 803   BIT_TABLE(D, route),
 804   BIT_TABLE(D, timestamp),
 805   BIT_TABLE(D, tls),
 806   BIT_TABLE(D, transport),
 807   BIT_TABLE(D, uid),
 808   BIT_TABLE(D, verify),
 809 };
 810 int     debug_options_count    = nelem(debug_options);
 811
 812 unsigned int debug_selector    = 0;
 813 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 814 uschar *delay_warning_condition=
 815   US"${if or {"
 816             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 817             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 818             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 819             "} {no}{yes}}";
 820 uschar *deliver_address_data   = NULL;
 821 int     deliver_datafile       = -1;
 822 const uschar *deliver_domain   = NULL;
 823 uschar *deliver_domain_data    = NULL;
 824 const uschar *deliver_domain_orig = NULL;
 825 const uschar *deliver_domain_parent = NULL;
 826 time_t  deliver_frozen_at      = 0;
 827 uschar *deliver_home           = NULL;
 828 const uschar *deliver_host     = NULL;
 829 const uschar *deliver_host_address = NULL;
 830 int     deliver_host_port      = 0;
 831 uschar *deliver_in_buffer      = NULL;
 832 ino_t   deliver_inode          = 0;
 833 uschar *deliver_localpart      = NULL;
 834 uschar *deliver_localpart_data = NULL;
 835 uschar *deliver_localpart_orig = NULL;
 836 uschar *deliver_localpart_parent = NULL;
 837 uschar *deliver_localpart_prefix = NULL;
 838 uschar *deliver_localpart_suffix = NULL;
 839 uschar *deliver_out_buffer     = NULL;
 840 int     deliver_queue_load_max = -1;
 841 address_item  *deliver_recipients = NULL;
 842 uschar *deliver_selectstring   = NULL;
 843 uschar *deliver_selectstring_sender = NULL;
 844
 845 #ifndef DISABLE_DKIM
 846 unsigned dkim_collect_input      = 0;
 847 uschar *dkim_cur_signer          = NULL;
 848 int     dkim_key_length          = 0;
 849 void   *dkim_signatures          = NULL;
 850 uschar *dkim_signers             = NULL;
 851 uschar *dkim_signing_domain      = NULL;
 852 uschar *dkim_signing_selector    = NULL;
 853 uschar *dkim_verify_overall      = NULL;
 854 uschar *dkim_verify_signers      = US"$dkim_signers";
 855 uschar *dkim_verify_status       = NULL;
 856 uschar *dkim_verify_reason       = NULL;
 857 #endif
 858 #ifdef EXPERIMENTAL_DMARC
 859 uschar *dmarc_domain_policy     = NULL;
 860 uschar *dmarc_forensic_sender   = NULL;
 861 uschar *dmarc_history_file      = NULL;
 862 uschar *dmarc_status            = NULL;
 863 uschar *dmarc_status_text       = NULL;
 864 uschar *dmarc_tld_file          = NULL;
 865 uschar *dmarc_used_domain       = NULL;
 866 #endif
 867
 868 uschar *dns_again_means_nonexist = NULL;
 869 int     dns_csa_search_limit   = 5;
 870 int     dns_cname_loops        = 1;
 871 #ifdef SUPPORT_DANE
 872 int     dns_dane_ok            = -1;
 873 #endif
 874 uschar *dns_ipv4_lookup        = NULL;
 875 int     dns_retrans            = 0;
 876 int     dns_retry              = 0;
 877 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 878 uschar *dns_trust_aa           = NULL;
 879 int     dns_use_edns0          = -1; /* <0 = not coerced */
 880 uschar *dnslist_domain         = NULL;
 881 uschar *dnslist_matched        = NULL;
 882 uschar *dnslist_text           = NULL;
 883 uschar *dnslist_value          = NULL;
 884 tree_node *domainlist_anchor   = NULL;
 885 int     domainlist_count       = 0;
 886 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 887
 888 int     errno_quota            = ERRNO_QUOTA;
 889 uschar *errors_copy            = NULL;
 890 int     error_handling         = ERRORS_SENDER;
 891 uschar *errors_reply_to        = NULL;
 892 int     errors_sender_rc       = EXIT_FAILURE;
 893 #ifndef DISABLE_EVENT
 894 uschar *event_action             = NULL;        /* expansion for delivery events */
 895 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 896 int     event_defer_errno        = 0;
 897 const uschar *event_name         = NULL;        /* event name variable */
 898 #endif
 899
 900
 901 gid_t   exim_gid               = EXIM_GID;
 902 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 903                         "\0<---------------Space to patch exim_path->";
 904 uid_t   exim_uid               = EXIM_UID;
 905 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 906 int     expand_forbid          = 0;
 907 int     expand_nlength[EXPAND_MAXN+1];
 908 int     expand_nmax            = -1;
 909 uschar *expand_nstring[EXPAND_MAXN+1];
 910 uschar *expand_string_message;
 911 uschar *extra_local_interfaces = NULL;
 912
 913 int     fake_response          = OK;
 914 uschar *fake_response_text     = US"Your message has been rejected but is "
 915                                    "being kept for evaluation.\nIf it was a "
 916                                    "legitimate message, it may still be "
 917                                    "delivered to the target recipient(s).";
 918 int     filter_n[FILTER_VARIABLE_COUNT];
 919 int     filter_sn[FILTER_VARIABLE_COUNT];
 920 int     filter_test            = FTEST_NONE;
 921 uschar *filter_test_sfile      = NULL;
 922 uschar *filter_test_ufile      = NULL;
 923 uschar *filter_thisaddress     = NULL;
 924 int     finduser_retries       = 0;
 925 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 926 uschar *freeze_tell            = NULL;
 927 uschar *freeze_tell_config     = NULL;
 928 uschar *fudged_queue_times     = US"";
 929
 930 uschar *gecos_name             = NULL;
 931 uschar *gecos_pattern          = NULL;
 932 rewrite_rule  *global_rewrite_rules = NULL;
 933
 934 volatile sig_atomic_t had_command_timeout = 0;
 935 volatile sig_atomic_t had_command_sigterm = 0;
 936 volatile sig_atomic_t had_data_timeout    = 0;
 937 volatile sig_atomic_t had_data_sigint     = 0;
 938 uschar *headers_charset        = US HEADERS_CHARSET;
 939 int     header_insert_maxlen   = 64 * 1024;
 940 header_line  *header_last      = NULL;
 941 header_line  *header_list      = NULL;
 942 int     header_maxsize         = HEADER_MAXSIZE;
 943 int     header_line_maxsize    = 0;
 944
 945 header_name header_names[] = {
 946   /* name               len     allow_resent    htype */
 947   { US"bcc",            3,      TRUE,           htype_bcc },
 948   { US"cc",             2,      TRUE,           htype_cc },
 949   { US"date",           4,      TRUE,           htype_date },
 950   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 951   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 952   { US"from",           4,      TRUE,           htype_from },
 953   { US"message-id",    10,      TRUE,           htype_id },
 954   { US"received",       8,      FALSE,          htype_received },
 955   { US"reply-to",       8,      FALSE,          htype_reply_to },
 956   { US"return-path",   11,      FALSE,          htype_return_path },
 957   { US"sender",         6,      TRUE,           htype_sender },
 958   { US"subject",        7,      FALSE,          htype_subject },
 959   { US"to",             2,      TRUE,           htype_to }
 960 };
 961
 962 int header_names_size          = nelem(header_names);
 963
 964 uschar *helo_accept_junk_hosts = NULL;
 965 uschar *helo_allow_chars       = US"";
 966 uschar *helo_lookup_domains    = US"@ : @[]";
 967 uschar *helo_try_verify_hosts  = NULL;
 968 uschar *helo_verify_hosts      = NULL;
 969 const uschar *hex_digits       = CUS"0123456789abcdef";
 970 uschar *hold_domains           = NULL;
 971 uschar *host_data              = NULL;
 972 uschar *host_lookup            = NULL;
 973 uschar *host_lookup_order      = US"bydns:byaddr";
 974 uschar *host_lookup_msg        = US"";
 975 int     host_number            = 0;
 976 uschar *host_number_string     = NULL;
 977 uschar *host_reject_connection = NULL;
 978 tree_node *hostlist_anchor     = NULL;
 979 int     hostlist_count         = 0;
 980 uschar *hosts_treat_as_local   = NULL;
 981 uschar *hosts_connection_nolog = NULL;
 982
 983 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 984 uschar *ignore_fromline_hosts  = NULL;
 985 int     inetd_wait_timeout     = -1;
 986 uschar *initial_cwd            = NULL;
 987 uschar *interface_address      = NULL;
 988 int     interface_port         = -1;
 989 uschar *iterate_item           = NULL;
 990
 991 int     journal_fd             = -1;
 992
 993 uschar *keep_environment       = NULL;
 994
 995 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 996
 997 uschar *eldap_dn               = NULL;
 998 int     load_average           = -2;
 999 uschar *local_from_prefix      = NULL;
1000 uschar *local_from_suffix      = NULL;
1001
1002 #if HAVE_IPV6
1003 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1004 #else
1005 uschar *local_interfaces       = US"0.0.0.0";
1006 #endif
1007
1008 #ifdef HAVE_LOCAL_SCAN
1009 uschar *local_scan_data        = NULL;
1010 int     local_scan_timeout     = 5*60;
1011 #endif
1012 gid_t   local_user_gid         = (gid_t)(-1);
1013 uid_t   local_user_uid         = (uid_t)(-1);
1014
1015 tree_node *localpartlist_anchor= NULL;
1016 int     localpartlist_count    = 0;
1017 uschar *log_buffer             = NULL;
1018
1019 int     log_default[]          = { /* for initializing log_selector */
1020   Li_acl_warn_skipped,
1021   Li_connection_reject,
1022   Li_delay_delivery,
1023   Li_dkim,
1024   Li_dnslist_defer,
1025   Li_etrn,
1026   Li_host_lookup_failed,
1027   Li_lost_incoming_connection,
1028   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1029   Li_queue_run,
1030   Li_rejected_header,
1031   Li_retry_defer,
1032   Li_sender_verify_fail,
1033   Li_size_reject,
1034   Li_skip_delivery,
1035   Li_smtp_confirmation,
1036   Li_tls_certificate_verified,
1037   Li_tls_cipher,
1038   -1
1039 };
1040
1041 uschar *log_file_path          = US LOG_FILE_PATH
1042                            "\0<--------------Space to patch log_file_path->";
1043
1044 int     log_notall[]           = {
1045   -1
1046 };
1047 bit_table log_options[]        = { /* must be in alphabetical order */
1048   BIT_TABLE(L, 8bitmime),
1049   BIT_TABLE(L, acl_warn_skipped),
1050   BIT_TABLE(L, address_rewrite),
1051   BIT_TABLE(L, all),
1052   BIT_TABLE(L, all_parents),
1053   BIT_TABLE(L, arguments),
1054   BIT_TABLE(L, connection_reject),
1055   BIT_TABLE(L, delay_delivery),
1056   BIT_TABLE(L, deliver_time),
1057   BIT_TABLE(L, delivery_size),
1058 #ifndef DISABLE_DKIM
1059   BIT_TABLE(L, dkim),
1060   BIT_TABLE(L, dkim_verbose),
1061 #endif
1062   BIT_TABLE(L, dnslist_defer),
1063   BIT_TABLE(L, dnssec),
1064   BIT_TABLE(L, etrn),
1065   BIT_TABLE(L, host_lookup_failed),
1066   BIT_TABLE(L, ident_timeout),
1067   BIT_TABLE(L, incoming_interface),
1068   BIT_TABLE(L, incoming_port),
1069   BIT_TABLE(L, lost_incoming_connection),
1070   BIT_TABLE(L, millisec),
1071   BIT_TABLE(L, outgoing_interface),
1072   BIT_TABLE(L, outgoing_port),
1073   BIT_TABLE(L, pid),
1074   BIT_TABLE(L, pipelining),
1075 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1076   BIT_TABLE(L, proxy),
1077 #endif
1078   BIT_TABLE(L, queue_run),
1079   BIT_TABLE(L, queue_time),
1080   BIT_TABLE(L, queue_time_overall),
1081   BIT_TABLE(L, receive_time),
1082   BIT_TABLE(L, received_recipients),
1083   BIT_TABLE(L, received_sender),
1084   BIT_TABLE(L, rejected_header),
1085   { US"rejected_headers", Li_rejected_header },
1086   BIT_TABLE(L, retry_defer),
1087   BIT_TABLE(L, return_path_on_delivery),
1088   BIT_TABLE(L, sender_on_delivery),
1089   BIT_TABLE(L, sender_verify_fail),
1090   BIT_TABLE(L, size_reject),
1091   BIT_TABLE(L, skip_delivery),
1092   BIT_TABLE(L, smtp_confirmation),
1093   BIT_TABLE(L, smtp_connection),
1094   BIT_TABLE(L, smtp_incomplete_transaction),
1095   BIT_TABLE(L, smtp_mailauth),
1096   BIT_TABLE(L, smtp_no_mail),
1097   BIT_TABLE(L, smtp_protocol_error),
1098   BIT_TABLE(L, smtp_syntax_error),
1099   BIT_TABLE(L, subject),
1100   BIT_TABLE(L, tls_certificate_verified),
1101   BIT_TABLE(L, tls_cipher),
1102   BIT_TABLE(L, tls_peerdn),
1103   BIT_TABLE(L, tls_sni),
1104   BIT_TABLE(L, unknown_in_list),
1105 };
1106 int     log_options_count      = nelem(log_options);
1107
1108 int     log_reject_target      = 0;
1109 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1110 uschar *log_selector_string    = NULL;
1111 FILE   *log_stderr             = NULL;
1112 uschar *login_sender_address   = NULL;
1113 uschar *lookup_dnssec_authenticated = NULL;
1114 int     lookup_open_max        = 25;
1115 uschar *lookup_value           = NULL;
1116
1117 macro_item *macros_user        = NULL;
1118 uschar *mailstore_basename     = NULL;
1119 #ifdef WITH_CONTENT_SCAN
1120 uschar *malware_name           = NULL;  /* Virus Name */
1121 #endif
1122 int     max_received_linelength= 0;
1123 int     max_username_length    = 0;
1124 int     message_age            = 0;
1125 uschar *message_body           = NULL;
1126 uschar *message_body_end       = NULL;
1127 int     message_body_size      = 0;
1128 int     message_body_visible   = 500;
1129 int     message_ended          = END_NOTSTARTED;
1130 uschar *message_headers        = NULL;
1131 uschar *message_id;
1132 uschar *message_id_domain      = NULL;
1133 uschar *message_id_text        = NULL;
1134 struct timeval message_id_tv   = { 0, 0 };
1135 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1136 uschar *message_id_external;
1137 int     message_linecount      = 0;
1138 int     message_size           = 0;
1139 uschar *message_size_limit     = US"50M";
1140 #ifdef SUPPORT_I18N
1141 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1142 #endif
1143 uschar  message_subdir[2]      = { 0, 0 };
1144 uschar *message_reference      = NULL;
1145
1146 /* MIME ACL expandables */
1147 #ifdef WITH_CONTENT_SCAN
1148 int     mime_anomaly_level     = 0;
1149 const uschar *mime_anomaly_text      = NULL;
1150 uschar *mime_boundary          = NULL;
1151 uschar *mime_charset           = NULL;
1152 uschar *mime_content_description = NULL;
1153 uschar *mime_content_disposition = NULL;
1154 uschar *mime_content_id        = NULL;
1155 unsigned int mime_content_size = 0;
1156 uschar *mime_content_transfer_encoding = NULL;
1157 uschar *mime_content_type      = NULL;
1158 uschar *mime_decoded_filename  = NULL;
1159 uschar *mime_filename          = NULL;
1160 int     mime_is_multipart      = 0;
1161 int     mime_is_coverletter    = 0;
1162 int     mime_is_rfc822         = 0;
1163 int     mime_part_count        = -1;
1164 #endif
1165
1166 uid_t  *never_users            = NULL;
1167
1168 const int on                   = 1;     /* for setsockopt */
1169 const int off                  = 0;
1170
1171 uid_t   original_euid;
1172 gid_t   originator_gid;
1173 uschar *originator_login       = NULL;
1174 uschar *originator_name        = NULL;
1175 uid_t   originator_uid;
1176 uschar *override_local_interfaces = NULL;
1177 uschar *override_pid_file_path = NULL;
1178
1179 uschar *percent_hack_domains   = NULL;
1180 uschar *pid_file_path          = US PID_FILE_PATH
1181                            "\0<--------------Space to patch pid_file_path->";
1182 uschar *pipelining_advertise_hosts = US"*";
1183 uschar *primary_hostname       = NULL;
1184 uschar  process_info[PROCESS_INFO_SIZE];
1185 int     process_info_len       = 0;
1186 uschar *process_log_path       = NULL;
1187
1188 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1189 uschar *hosts_proxy            = US"";
1190 uschar *proxy_external_address = US"";
1191 int     proxy_external_port    = 0;
1192 uschar *proxy_local_address    = US"";
1193 int     proxy_local_port       = 0;
1194 #endif
1195
1196 uschar *prvscheck_address      = NULL;
1197 uschar *prvscheck_keynum       = NULL;
1198 uschar *prvscheck_result       = NULL;
1199
1200
1201 const uschar *qualify_domain_recipient = NULL;
1202 uschar *qualify_domain_sender  = NULL;
1203 uschar *queue_domains          = NULL;
1204 int     queue_interval         = -1;
1205 uschar *queue_name             = US"";
1206 uschar *queue_only_file        = NULL;
1207 int     queue_only_load        = -1;
1208 uschar *queue_run_max          = US"5";
1209 pid_t   queue_run_pid          = (pid_t)0;
1210 int     queue_run_pipe         = -1;
1211 uschar *queue_smtp_domains     = NULL;
1212
1213 unsigned int random_seed       = 0;
1214 tree_node *ratelimiters_cmd    = NULL;
1215 tree_node *ratelimiters_conn   = NULL;
1216 tree_node *ratelimiters_mail   = NULL;
1217 uschar *raw_active_hostname    = NULL;
1218 uschar *raw_sender             = NULL;
1219 uschar **raw_recipients        = NULL;
1220 int     raw_recipients_count   = 0;
1221
1222 int     rcpt_count             = 0;
1223 int     rcpt_fail_count        = 0;
1224 int     rcpt_defer_count       = 0;
1225 gid_t   real_gid;
1226 uid_t   real_uid;
1227 int     receive_linecount      = 0;
1228 int     receive_messagecount   = 0;
1229 int     receive_timeout        = 0;
1230 int     received_count         = 0;
1231 uschar *received_for           = NULL;
1232
1233 /*  This is the default text for Received headers generated by Exim. The
1234 date  will be automatically added on the end. */
1235
1236 uschar *received_header_text   = US
1237      "Received: "
1238      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1239      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1240      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1241      "by $primary_hostname "
1242      "${if def:received_protocol {with $received_protocol}} "
1243      #ifdef SUPPORT_TLS
1244      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1245      #endif
1246      "(Exim $version_number)\n\t"
1247      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1248      "id $message_exim_id"
1249      "${if def:received_for {\n\tfor $received_for}}"
1250      "\0<---------------Space to patch received_header_text->";
1251
1252 int     received_headers_max   = 30;
1253 uschar *received_protocol      = NULL;
1254 struct timeval received_time   = { 0, 0 };
1255 struct timeval received_time_taken = { 0, 0 };
1256 uschar *recipient_data         = NULL;
1257 uschar *recipient_unqualified_hosts = NULL;
1258 uschar *recipient_verify_failure = NULL;
1259 int     recipients_count       = 0;
1260 recipient_item  *recipients_list = NULL;
1261 int     recipients_list_max    = 0;
1262 int     recipients_max         = 0;
1263 const pcre *regex_AUTH         = NULL;
1264 const pcre *regex_check_dns_names = NULL;
1265 const pcre *regex_From         = NULL;
1266 const pcre *regex_IGNOREQUOTA  = NULL;
1267 const pcre *regex_PIPELINING   = NULL;
1268 const pcre *regex_SIZE         = NULL;
1269 const pcre *regex_ismsgid      = NULL;
1270 const pcre *regex_smtp_code    = NULL;
1271 uschar *regex_vars[REGEX_VARS];
1272 #ifdef WHITELIST_D_MACROS
1273 const pcre *regex_whitelisted_macro = NULL;
1274 #endif
1275 #ifdef WITH_CONTENT_SCAN
1276 uschar *regex_match_string     = NULL;
1277 #endif
1278 int     remote_delivery_count  = 0;
1279 int     remote_max_parallel    = 2;
1280 uschar *remote_sort_domains    = NULL;
1281 int     retry_data_expire      = 7*24*60*60;
1282 int     retry_interval_max     = 24*60*60;
1283 int     retry_maximum_timeout  = 0;        /* set from retry config */
1284 retry_config  *retries         = NULL;
1285 uschar *return_path            = NULL;
1286 int     rewrite_existflags     = 0;
1287 uschar *rfc1413_hosts          = US"@[]";
1288 int     rfc1413_query_timeout  = 0;
1289 uid_t   root_gid               = ROOT_GID;
1290 uid_t   root_uid               = ROOT_UID;
1291
1292 router_instance  *routers  = NULL;
1293 router_instance  router_defaults = {
1294     .next =                     NULL,
1295     .name =                     NULL,
1296     .info =                     NULL,
1297     .options_block =            NULL,
1298     .driver_name =              NULL,
1299
1300     .address_data =             NULL,
1301 #ifdef EXPERIMENTAL_BRIGHTMAIL
1302     .bmi_rule =                 NULL,
1303 #endif
1304     .cannot_route_message =     NULL,
1305     .condition =                NULL,
1306     .current_directory =        NULL,
1307     .debug_string =             NULL,
1308     .domains =                  NULL,
1309     .errors_to =                NULL,
1310     .expand_gid =               NULL,
1311     .expand_uid =               NULL,
1312     .expand_more =              NULL,
1313     .expand_unseen =            NULL,
1314     .extra_headers =            NULL,
1315     .fallback_hosts =           NULL,
1316     .home_directory =           NULL,
1317     .ignore_target_hosts =      NULL,
1318     .local_parts =              NULL,
1319     .pass_router_name =         NULL,
1320     .prefix =                   NULL,
1321     .redirect_router_name =     NULL,
1322     .remove_headers =           NULL,
1323     .require_files =            NULL,
1324     .router_home_directory =    NULL,
1325     .self =                     US"freeze",
1326     .senders =                  NULL,
1327     .suffix =                   NULL,
1328     .translate_ip_address =     NULL,
1329     .transport_name =           NULL,
1330
1331     .address_test =             TRUE,
1332 #ifdef EXPERIMENTAL_BRIGHTMAIL
1333     .bmi_deliver_alternate =    FALSE,
1334     .bmi_deliver_default =      FALSE,
1335     .bmi_dont_deliver =         FALSE,
1336 #endif
1337     .expn =                     TRUE,
1338     .caseful_local_part =       FALSE,
1339     .check_local_user =         FALSE,
1340     .disable_logging =          FALSE,
1341     .fail_verify_recipient =    FALSE,
1342     .fail_verify_sender =       FALSE,
1343     .gid_set =                  FALSE,
1344     .initgroups =               FALSE,
1345     .log_as_local =             TRUE_UNSET,
1346     .more =                     TRUE,
1347     .pass_on_timeout =          FALSE,
1348     .prefix_optional =          FALSE,
1349     .repeat_use =               TRUE,
1350     .retry_use_local_part =     TRUE_UNSET,
1351     .same_domain_copy_routing = FALSE,
1352     .self_rewrite =             FALSE,
1353     .suffix_optional =          FALSE,
1354     .verify_only =              FALSE,
1355     .verify_recipient =         TRUE,
1356     .verify_sender =            TRUE,
1357     .uid_set =                  FALSE,
1358     .unseen =                   FALSE,
1359     .dsn_lasthop =              FALSE,
1360
1361     .self_code =                self_freeze,
1362     .uid =                      (uid_t)(-1),
1363     .gid =                      (gid_t)(-1),
1364
1365     .fallback_hostlist =        NULL,
1366     .transport =                NULL,
1367     .pass_router =              NULL,
1368     .redirect_router =          NULL,
1369
1370     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1371 };
1372
1373 uschar *router_name            = NULL;
1374
1375 ip_address_item *running_interfaces = NULL;
1376
1377 /* This is a weird one. The following string gets patched in the binary by the
1378 script that sets up a copy of Exim for running in the test harness. It seems
1379 that compilers are now clever, and share constant strings if they can.
1380 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1381 make use of the end of this string in order to save space. So the patching then
1382 wrecks this. We defeat this optimization by adding some additional characters
1383 onto the end of the string. */
1384
1385 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1386
1387 int     runrc                  = 0;
1388
1389 uschar *search_error_message   = NULL;
1390 uschar *self_hostname          = NULL;
1391 uschar *sender_address         = NULL;
1392 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1393 uschar *sender_address_data    = NULL;
1394 uschar *sender_address_unrewritten = NULL;
1395 uschar *sender_data            = NULL;
1396 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1397 uschar *sender_fullhost        = NULL;
1398 uschar *sender_helo_name       = NULL;
1399 uschar **sender_host_aliases   = &no_aliases;
1400 uschar *sender_host_address    = NULL;
1401 uschar *sender_host_authenticated = NULL;
1402 uschar *sender_host_auth_pubname  = NULL;
1403 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1404 uschar *sender_host_name       = NULL;
1405 int     sender_host_port       = 0;
1406 uschar *sender_ident           = NULL;
1407 uschar *sender_rate            = NULL;
1408 uschar *sender_rate_limit      = NULL;
1409 uschar *sender_rate_period     = NULL;
1410 uschar *sender_rcvhost         = NULL;
1411 uschar *sender_unqualified_hosts = NULL;
1412 uschar *sender_verify_failure = NULL;
1413 address_item *sender_verified_list  = NULL;
1414 address_item *sender_verified_failed = NULL;
1415 int     sender_verified_rc     = -1;
1416 uschar *sending_ip_address     = NULL;
1417 int     sending_port           = -1;
1418 SIGNAL_BOOL sigalrm_seen       = FALSE;
1419 uschar **sighup_argv           = NULL;
1420 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1421 int     smtp_accept_count      = 0;
1422 int     smtp_accept_max        = 20;
1423 int     smtp_accept_max_nonmail= 10;
1424 uschar *smtp_accept_max_nonmail_hosts = US"*";
1425 int     smtp_accept_max_per_connection = 1000;
1426 uschar *smtp_accept_max_per_host = NULL;
1427 int     smtp_accept_queue      = 0;
1428 int     smtp_accept_queue_per_connection = 10;
1429 int     smtp_accept_reserve    = 0;
1430 uschar *smtp_active_hostname   = NULL;
1431 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1432                              "Exim $version_number $tod_full"
1433                              "\0<---------------Space to patch smtp_banner->";
1434 int     smtp_ch_index          = 0;
1435 uschar *smtp_cmd_argument      = NULL;
1436 uschar *smtp_cmd_buffer        = NULL;
1437 struct timeval smtp_connection_start  = {0,0};
1438 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1439 int     smtp_connect_backlog   = 20;
1440 double  smtp_delay_mail        = 0.0;
1441 double  smtp_delay_rcpt        = 0.0;
1442 FILE   *smtp_in                = NULL;
1443 int     smtp_load_reserve      = -1;
1444 int     smtp_mailcmd_count     = 0;
1445 FILE   *smtp_out               = NULL;
1446 uschar *smtp_etrn_command      = NULL;
1447 int     smtp_max_synprot_errors= 3;
1448 int     smtp_max_unknown_commands = 3;
1449 uschar *smtp_notquit_reason    = NULL;
1450 uschar *smtp_ratelimit_hosts   = NULL;
1451 uschar *smtp_ratelimit_mail    = NULL;
1452 uschar *smtp_ratelimit_rcpt    = NULL;
1453 uschar *smtp_read_error        = US"";
1454 int     smtp_receive_timeout   = 5*60;
1455 uschar *smtp_receive_timeout_s = NULL;
1456 uschar *smtp_reserve_hosts     = NULL;
1457 int     smtp_rlm_base          = 0;
1458 double  smtp_rlm_factor        = 0.0;
1459 int     smtp_rlm_limit         = 0;
1460 int     smtp_rlm_threshold     = INT_MAX;
1461 int     smtp_rlr_base          = 0;
1462 double  smtp_rlr_factor        = 0.0;
1463 int     smtp_rlr_limit         = 0;
1464 int     smtp_rlr_threshold     = INT_MAX;
1465 unsigned smtp_peer_options     = 0;
1466 unsigned smtp_peer_options_wrap= 0;
1467 #ifdef SUPPORT_I18N
1468 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1469 #endif
1470
1471 #ifdef WITH_CONTENT_SCAN
1472 uschar *spamd_address          = US"127.0.0.1 783";
1473 uschar *spam_bar               = NULL;
1474 uschar *spam_report            = NULL;
1475 uschar *spam_action            = NULL;
1476 uschar *spam_score             = NULL;
1477 uschar *spam_score_int         = NULL;
1478 #endif
1479 #ifdef SUPPORT_SPF
1480 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1481 uschar *spf_header_comment     = NULL;
1482 uschar *spf_received           = NULL;
1483 uschar *spf_result             = NULL;
1484 uschar *spf_smtp_comment       = NULL;
1485 #endif
1486
1487 FILE   *spool_data_file        = NULL;
1488 uschar *spool_directory        = US SPOOL_DIRECTORY
1489                            "\0<--------------Space to patch spool_directory->";
1490 #ifdef EXPERIMENTAL_SRS
1491 uschar *srs_config             = NULL;
1492 uschar *srs_db_address         = NULL;
1493 uschar *srs_db_key             = NULL;
1494 int     srs_hashlength         = 6;
1495 int     srs_hashmin            = -1;
1496 int     srs_maxage             = 31;
1497 uschar *srs_orig_recipient     = NULL;
1498 uschar *srs_orig_sender        = NULL;
1499 uschar *srs_recipient          = NULL;
1500 uschar *srs_secrets            = NULL;
1501 uschar *srs_status             = NULL;
1502 #endif
1503 int     string_datestamp_offset= -1;
1504 int     string_datestamp_length= 0;
1505 int     string_datestamp_type  = -1;
1506 uschar *submission_domain      = NULL;
1507 uschar *submission_name        = NULL;
1508 int     syslog_facility        = LOG_MAIL;
1509 uschar *syslog_processname     = US"exim";
1510 uschar *system_filter          = NULL;
1511
1512 uschar *system_filter_directory_transport = NULL;
1513 uschar *system_filter_file_transport = NULL;
1514 uschar *system_filter_pipe_transport = NULL;
1515 uschar *system_filter_reply_transport = NULL;
1516
1517 gid_t   system_filter_gid      = 0;
1518 uid_t   system_filter_uid      = (uid_t)-1;
1519
1520 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1521 int     tcp_out_fastopen       = 0;
1522 #ifdef USE_TCP_WRAPPERS
1523 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1524 #endif
1525 int     test_harness_load_avg  = 0;
1526 int     thismessage_size_limit = 0;
1527 int     timeout_frozen_after   = 0;
1528
1529 transport_instance  *transports = NULL;
1530
1531 transport_instance  transport_defaults = {
1532     .next =                     NULL,
1533     .name =                     NULL,
1534     .info =                     NULL,
1535     .options_block =            NULL,
1536     .driver_name =              NULL,
1537     .setup =                    NULL,
1538     .batch_max =                1,
1539     .batch_id =                 NULL,
1540     .home_dir =                 NULL,
1541     .current_dir =              NULL,
1542     .expand_multi_domain =      NULL,
1543     .multi_domain =             TRUE,
1544     .overrides_hosts =          FALSE,
1545     .max_addresses =            100,
1546     .connection_max_messages =  500,
1547     .deliver_as_creator =       FALSE,
1548     .disable_logging =          FALSE,
1549     .initgroups =               FALSE,
1550     .uid_set =                  FALSE,
1551     .gid_set =                  FALSE,
1552     .uid =                      (uid_t)(-1),
1553     .gid =                      (gid_t)(-1),
1554     .expand_uid =               NULL,
1555     .expand_gid =               NULL,
1556     .warn_message =             NULL,
1557     .shadow =                   NULL,
1558     .shadow_condition =         NULL,
1559     .filter_command =           NULL,
1560     .add_headers =              NULL,
1561     .remove_headers =           NULL,
1562     .return_path =              NULL,
1563     .debug_string =             NULL,
1564     .max_parallel =             NULL,
1565     .message_size_limit =       NULL,
1566     .headers_rewrite =          NULL,
1567     .rewrite_rules =            NULL,
1568     .rewrite_existflags =       0,
1569     .filter_timeout =           300,
1570     .body_only =                FALSE,
1571     .delivery_date_add =        FALSE,
1572     .envelope_to_add =          FALSE,
1573     .headers_only =             FALSE,
1574     .rcpt_include_affixes =     FALSE,
1575     .return_path_add =          FALSE,
1576     .return_output =            FALSE,
1577     .return_fail_output =       FALSE,
1578     .log_output =               FALSE,
1579     .log_fail_output =          FALSE,
1580     .log_defer_output =         FALSE,
1581     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1582                                                  1 nor 0 so can detect unset */
1583 #ifndef DISABLE_EVENT
1584    .event_action =              NULL
1585 #endif
1586 };
1587
1588 int     transport_count;
1589 uschar *transport_name          = NULL;
1590 int     transport_newlines;
1591 const uschar **transport_filter_argv  = NULL;
1592 int     transport_filter_timeout;
1593 int     transport_write_timeout= 0;
1594
1595 tree_node  *tree_dns_fails     = NULL;
1596 tree_node  *tree_duplicates    = NULL;
1597 tree_node  *tree_nonrecipients = NULL;
1598 tree_node  *tree_unusable      = NULL;
1599
1600 gid_t  *trusted_groups         = NULL;
1601 uid_t  *trusted_users          = NULL;
1602 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1603
1604 uschar *unknown_login          = NULL;
1605 uschar *unknown_username       = NULL;
1606 uschar *untrusted_set_sender   = NULL;
1607
1608 /*  A regex for matching a "From_" line in an incoming message, in the form
1609
1610     From ph10 Fri Jan  5 12:35 GMT 1996
1611
1612 which  the "mail" commands send to the MTA (undocumented, of course), or in
1613 the  form
1614
1615     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1616
1617 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1618 Because  of variations in time formats, just match up to the minutes. That
1619 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1620 so  just require one digit for hours and minutes. The weekday is also absent
1621 in  some forms. */
1622
1623 uschar *uucp_from_pattern      = US
1624    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1625    "(?:"                                          /* Non-extracting bracket */
1626    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1627    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1628    ")"                                            /* End alternation */
1629    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1630
1631 uschar *uucp_from_sender       = US"$1";
1632
1633 uschar *verify_mode            = NULL;
1634 uschar *version_copyright      =
1635  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1636    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018";
1637 uschar *version_date           = US"?";
1638 uschar *version_cnumber        = US"????";
1639 uschar *version_string         = US"?";
1640
1641 uschar *warn_message_file      = NULL;
1642 int     warning_count          = 0;
1643 uschar *warnmsg_delay          = NULL;
1644 uschar *warnmsg_recipients     = NULL;
1645
1646
1647 /*  End of globals.c */