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         .running_in_test_harness = FALSE,
 319
 320         .search_find_defer      = FALSE,
 321         .sender_address_forced  = FALSE,
 322         .sender_host_notsocket  = FALSE,
 323         .sender_host_unknown    = FALSE,
 324         .sender_local           = FALSE,
 325         .sender_name_forced     = FALSE,
 326         .sender_set_untrusted   = FALSE,
 327         .smtp_authenticated     = FALSE,
 328         .smtp_in_pipelining_advertised = FALSE,
 329         .smtp_in_pipelining_used = FALSE,
 330         .spool_file_wireformat  = FALSE,
 331         .submission_mode        = FALSE,
 332         .suppress_local_fixups  = FALSE,
 333         .suppress_local_fixups_default = FALSE,
 334         .synchronous_delivery   = FALSE,
 335         .system_filtering       = FALSE,
 336
 337         .tcp_fastopen_ok        = FALSE,
 338         .tcp_in_fastopen        = FALSE,
 339         .tcp_in_fastopen_logged = FALSE,
 340         .tcp_out_fastopen_logged= FALSE,
 341         .timestamps_utc         = FALSE,
 342         .transport_filter_timed_out = FALSE,
 343         .trusted_caller         = FALSE,
 344         .trusted_config         = TRUE,
 345 };
 346
 347 /******************************************************************************/
 348 /* These are the flags which are either variables or mainsection options,
 349 so an address is needed for access, or are exported to local_scan. */
 350
 351 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 352 BOOL    allow_domain_literals  = FALSE;
 353 BOOL    allow_mx_to_ip         = FALSE;
 354 BOOL    allow_utf8_domains     = FALSE;
 355 BOOL    authentication_failed  = FALSE;
 356
 357 BOOL    bounce_return_body     = TRUE;
 358 BOOL    bounce_return_message  = TRUE;
 359 BOOL    check_rfc2047_length   = TRUE;
 360 BOOL    commandline_checks_require_admin = FALSE;
 361
 362 #ifdef EXPERIMENTAL_DCC
 363 BOOL    dcc_direct_add_header  = FALSE;
 364 #endif
 365 BOOL    debug_store            = FALSE;
 366 BOOL    delivery_date_remove   = TRUE;
 367 BOOL    deliver_drop_privilege = FALSE;
 368 #ifdef ENABLE_DISABLE_FSYNC
 369 BOOL    disable_fsync          = FALSE;
 370 #endif
 371 BOOL    disable_ipv6           = FALSE;
 372 BOOL    dns_csa_use_reverse    = TRUE;
 373 BOOL    drop_cr                = FALSE;         /* No longer used */
 374
 375 BOOL    envelope_to_remove     = TRUE;
 376 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 377 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 378 BOOL    extract_addresses_remove_arguments = TRUE;
 379
 380 BOOL    host_checking          = FALSE;
 381 BOOL    host_lookup_deferred   = FALSE;
 382 BOOL    host_lookup_failed     = FALSE;
 383 BOOL    ignore_fromline_local  = FALSE;
 384
 385 BOOL    local_from_check       = TRUE;
 386 BOOL    local_sender_retain    = FALSE;
 387 BOOL    log_timezone           = FALSE;
 388 BOOL    message_body_newlines  = FALSE;
 389 BOOL    message_logs           = TRUE;
 390 #ifdef SUPPORT_I18N
 391 BOOL    message_smtputf8       = FALSE;
 392 #endif
 393 BOOL    mua_wrapper            = FALSE;
 394
 395 BOOL    preserve_message_logs  = FALSE;
 396 BOOL    print_topbitchars      = FALSE;
 397 BOOL    prod_requires_admin    = TRUE;
 398 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 399 BOOL    proxy_session          = FALSE;
 400 #endif
 401
 402 BOOL    queue_list_requires_admin = TRUE;
 403 BOOL    queue_only             = FALSE;
 404 BOOL    queue_only_load_latch  = TRUE;
 405 BOOL    queue_only_override    = TRUE;
 406 BOOL    queue_run_in_order     = FALSE;
 407 BOOL    recipients_max_reject  = FALSE;
 408 BOOL    return_path_remove     = TRUE;
 409
 410 BOOL    smtp_batched_input     = FALSE;
 411 BOOL    sender_helo_dnssec     = FALSE;
 412 BOOL    sender_host_dnssec     = FALSE;
 413 BOOL    smtp_accept_keepalive  = TRUE;
 414 BOOL    smtp_check_spool_space = TRUE;
 415 BOOL    smtp_enforce_sync      = TRUE;
 416 BOOL    smtp_etrn_serialize    = TRUE;
 417 BOOL    smtp_input             = FALSE;
 418 BOOL    smtp_return_error_details = FALSE;
 419 #ifdef SUPPORT_SPF
 420 BOOL    spf_result_guessed     = FALSE;
 421 #endif
 422 BOOL    split_spool_directory  = FALSE;
 423 BOOL    spool_wireformat       = FALSE;
 424 #ifdef EXPERIMENTAL_SRS
 425 BOOL    srs_usehash            = TRUE;
 426 BOOL    srs_usetimestamp       = TRUE;
 427 #endif
 428 BOOL    strict_acl_vars        = FALSE;
 429 BOOL    strip_excess_angle_brackets = FALSE;
 430 BOOL    strip_trailing_dot     = FALSE;
 431 BOOL    syslog_duplication     = TRUE;
 432 BOOL    syslog_pid             = TRUE;
 433 BOOL    syslog_timestamp       = TRUE;
 434 BOOL    system_filter_gid_set  = FALSE;
 435 BOOL    system_filter_uid_set  = FALSE;
 436
 437 BOOL    tcp_nodelay            = TRUE;
 438 BOOL    write_rejectlog        = TRUE;
 439
 440 /******************************************************************************/
 441
 442 header_line *acl_added_headers = NULL;
 443 tree_node *acl_anchor          = NULL;
 444 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 445                                   NULL, NULL, NULL, NULL};
 446 int     acl_narg               = 0;
 447
 448 int     acl_level              = 0;
 449
 450 uschar *acl_not_smtp           = NULL;
 451 #ifdef WITH_CONTENT_SCAN
 452 uschar *acl_not_smtp_mime      = NULL;
 453 #endif
 454 uschar *acl_not_smtp_start     = NULL;
 455 uschar *acl_removed_headers    = NULL;
 456 uschar *acl_smtp_auth          = NULL;
 457 uschar *acl_smtp_connect       = NULL;
 458 uschar *acl_smtp_data          = NULL;
 459 #ifndef DISABLE_PRDR
 460 uschar *acl_smtp_data_prdr     = US"accept";
 461 #endif
 462 #ifndef DISABLE_DKIM
 463 uschar *acl_smtp_dkim          = NULL;
 464 #endif
 465 uschar *acl_smtp_etrn          = NULL;
 466 uschar *acl_smtp_expn          = NULL;
 467 uschar *acl_smtp_helo          = NULL;
 468 uschar *acl_smtp_mail          = NULL;
 469 uschar *acl_smtp_mailauth      = NULL;
 470 #ifdef WITH_CONTENT_SCAN
 471 uschar *acl_smtp_mime          = NULL;
 472 #endif
 473 uschar *acl_smtp_notquit       = NULL;
 474 uschar *acl_smtp_predata       = NULL;
 475 uschar *acl_smtp_quit          = NULL;
 476 uschar *acl_smtp_rcpt          = NULL;
 477 uschar *acl_smtp_starttls      = NULL;
 478 uschar *acl_smtp_vrfy          = NULL;
 479
 480 tree_node *acl_var_c           = NULL;
 481 tree_node *acl_var_m           = NULL;
 482 uschar *acl_verify_message     = NULL;
 483 string_item *acl_warn_logged   = NULL;
 484
 485 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 486 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 487
 488 uschar *acl_wherenames[]       = { US"RCPT",
 489                                    US"MAIL",
 490                                    US"PREDATA",
 491                                    US"MIME",
 492                                    US"DKIM",
 493                                    US"DATA",
 494 #ifndef DISABLE_PRDR
 495                                    US"PRDR",
 496 #endif
 497                                    US"non-SMTP",
 498                                    US"AUTH",
 499                                    US"connection",
 500                                    US"ETRN",
 501                                    US"EXPN",
 502                                    US"EHLO or HELO",
 503                                    US"MAILAUTH",
 504                                    US"non-SMTP-start",
 505                                    US"NOTQUIT",
 506                                    US"QUIT",
 507                                    US"STARTTLS",
 508                                    US"VRFY",
 509                                    US"delivery",
 510                                    US"unknown"
 511                                  };
 512
 513 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 514                                    US"550",     /* MAIL */
 515                                    US"550",     /* PREDATA */
 516                                    US"550",     /* MIME */
 517                                    US"550",     /* DKIM */
 518                                    US"550",     /* DATA */
 519 #ifndef DISABLE_PRDR
 520                                    US"550",    /* RCPT PRDR */
 521 #endif
 522                                    US"0",       /* not SMTP; not relevant */
 523                                    US"503",     /* AUTH */
 524                                    US"550",     /* connect */
 525                                    US"458",     /* ETRN */
 526                                    US"550",     /* EXPN */
 527                                    US"550",     /* HELO/EHLO */
 528                                    US"0",       /* MAILAUTH; not relevant */
 529                                    US"0",       /* not SMTP; not relevant */
 530                                    US"0",       /* NOTQUIT; not relevant */
 531                                    US"0",       /* QUIT; not relevant */
 532                                    US"550",     /* STARTTLS */
 533                                    US"252",     /* VRFY */
 534                                    US"0",       /* delivery; not relevant */
 535                                    US"0"        /* unknown; not relevant */
 536                                  };
 537
 538 uschar *add_environment        = NULL;
 539 address_item  *addr_duplicate  = NULL;
 540
 541 address_item address_defaults = {
 542   .next =               NULL,
 543   .parent =             NULL,
 544   .first =              NULL,
 545   .dupof =              NULL,
 546   .start_router =       NULL,
 547   .router =             NULL,
 548   .transport =          NULL,
 549   .host_list =          NULL,
 550   .host_used =          NULL,
 551   .fallback_hosts =     NULL,
 552   .reply =              NULL,
 553   .retries =            NULL,
 554   .address =            NULL,
 555   .unique =             NULL,
 556   .cc_local_part =      NULL,
 557   .lc_local_part =      NULL,
 558   .local_part =         NULL,
 559   .prefix =             NULL,
 560   .suffix =             NULL,
 561   .domain =             NULL,
 562   .address_retry_key =  NULL,
 563   .domain_retry_key =   NULL,
 564   .current_dir =        NULL,
 565   .home_dir =           NULL,
 566   .message =            NULL,
 567   .user_message =       NULL,
 568   .onetime_parent =     NULL,
 569   .pipe_expandn =       NULL,
 570   .return_filename =    NULL,
 571   .self_hostname =      NULL,
 572   .shadow_message =     NULL,
 573 #ifdef SUPPORT_TLS
 574   .cipher =             NULL,
 575   .ourcert =            NULL,
 576   .peercert =           NULL,
 577   .peerdn =             NULL,
 578   .ocsp =               OCSP_NOT_REQ,
 579 #endif
 580 #ifdef EXPERIMENTAL_DSN_INFO
 581   .smtp_greeting =      NULL,
 582   .helo_response =      NULL,
 583 #endif
 584   .authenticator =      NULL,
 585   .auth_id =            NULL,
 586   .auth_sndr =          NULL,
 587   .dsn_orcpt =          NULL,
 588   .dsn_flags =          0,
 589   .dsn_aware =          0,
 590   .uid =                (uid_t)(-1),
 591   .gid =                (gid_t)(-1),
 592   .flags =              { 0 },
 593   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 594   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 595   .mode =               -1,
 596   .more_errno =         0,
 597   .delivery_usec =      0,
 598   .basic_errno =        ERRNO_UNKNOWNERROR,
 599   .child_count =        0,
 600   .return_file =        -1,
 601   .special_action =     SPECIAL_NONE,
 602   .transport_return =   DEFER,
 603   .prop = {                                     /* fields that are propagated to children */
 604     .address_data =     NULL,
 605     .domain_data =      NULL,
 606     .localpart_data =   NULL,
 607     .errors_address =   NULL,
 608     .extra_headers =    NULL,
 609     .remove_headers =   NULL,
 610 #ifdef EXPERIMENTAL_SRS
 611     .srs_sender =       NULL,
 612 #endif
 613     .ignore_error =     FALSE,
 614 #ifdef SUPPORT_I18N
 615     .utf8_msg =         FALSE,
 616     .utf8_downcvt =     FALSE,
 617     .utf8_downcvt_maybe = FALSE
 618 #endif
 619   }
 620 };
 621
 622 uschar *address_file           = NULL;
 623 uschar *address_pipe           = NULL;
 624 tree_node *addresslist_anchor  = NULL;
 625 int     addresslist_count      = 0;
 626 gid_t  *admin_groups           = NULL;
 627
 628 #ifdef EXPERIMENTAL_ARC
 629 struct arc_set *arc_received    = NULL;
 630 int     arc_received_instance   = 0;
 631 int     arc_oldest_pass         = 0;
 632 const uschar *arc_state         = NULL;
 633 const uschar *arc_state_reason  = NULL;
 634 #endif
 635
 636 uschar *authenticated_fail_id  = NULL;
 637 uschar *authenticated_id       = NULL;
 638 uschar *authenticated_sender   = NULL;
 639 auth_instance  *auths          = NULL;
 640 uschar *auth_advertise_hosts   = US"*";
 641 auth_instance auth_defaults    = {
 642     .next =             NULL,
 643     .name =             NULL,
 644     .info =             NULL,
 645     .options_block =    NULL,
 646     .driver_name =      NULL,
 647     .advertise_condition = NULL,
 648     .client_condition = NULL,
 649     .public_name =      NULL,
 650     .set_id =           NULL,
 651     .set_client_id =    NULL,
 652     .mail_auth_condition = NULL,
 653     .server_debug_string = NULL,
 654     .server_condition = NULL,
 655     .client =           FALSE,
 656     .server =           FALSE,
 657     .advertised =       FALSE
 658 };
 659
 660 uschar *auth_defer_msg         = US"reason not recorded";
 661 uschar *auth_defer_user_msg    = US"";
 662 uschar *auth_vars[AUTH_VARS];
 663 int     auto_thaw              = 0;
 664 #ifdef WITH_CONTENT_SCAN
 665 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 666 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 667 #endif
 668
 669 #if BASE_62 == 62
 670 uschar *base62_chars=
 671     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 672 #else
 673 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 674 #endif
 675
 676 uschar *bi_command             = NULL;
 677 uschar *big_buffer             = NULL;
 678 int     big_buffer_size        = BIG_BUFFER_SIZE;
 679 #ifdef EXPERIMENTAL_BRIGHTMAIL
 680 uschar *bmi_alt_location       = NULL;
 681 uschar *bmi_base64_tracker_verdict = NULL;
 682 uschar *bmi_base64_verdict     = NULL;
 683 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 684 int     bmi_deliver            = 1;
 685 int     bmi_run                = 0;
 686 uschar *bmi_verdicts           = NULL;
 687 #endif
 688 int     bsmtp_transaction_linecount = 0;
 689 int     body_8bitmime          = 0;
 690 int     body_linecount         = 0;
 691 int     body_zerocount         = 0;
 692 uschar *bounce_message_file    = NULL;
 693 uschar *bounce_message_text    = NULL;
 694 uschar *bounce_recipient       = NULL;
 695 int     bounce_return_linesize_limit = 998;
 696 int     bounce_return_size_limit = 100*1024;
 697 uschar *bounce_sender_authentication = NULL;
 698
 699 uschar *callout_address        = NULL;
 700 int     callout_cache_domain_positive_expire = 7*24*60*60;
 701 int     callout_cache_domain_negative_expire = 3*60*60;
 702 int     callout_cache_positive_expire = 24*60*60;
 703 int     callout_cache_negative_expire = 2*60*60;
 704 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 705 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 706 int     check_log_inodes       = 100;
 707 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 708 int     check_spool_inodes     = 100;
 709 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 710
 711 uschar *chunking_advertise_hosts = US"*";
 712 unsigned chunking_datasize     = 0;
 713 unsigned chunking_data_left    = 0;
 714 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 715 const pcre *regex_CHUNKING     = NULL;
 716
 717 uschar *client_authenticator   = NULL;
 718 uschar *client_authenticated_id = NULL;
 719 uschar *client_authenticated_sender = NULL;
 720 int     clmacro_count          = 0;
 721 uschar *clmacros[MAX_CLMACROS];
 722 FILE   *config_file            = NULL;
 723 const uschar *config_filename  = NULL;
 724 int     config_lineno          = 0;
 725 #ifdef CONFIGURE_GROUP
 726 gid_t   config_gid             = CONFIGURE_GROUP;
 727 #else
 728 gid_t   config_gid             = 0;
 729 #endif
 730 uschar *config_main_filelist   = US CONFIGURE_FILE
 731                          "\0<-----------Space to patch configure_filename->";
 732 uschar *config_main_filename   = NULL;
 733 uschar *config_main_directory  = NULL;
 734
 735 #ifdef CONFIGURE_OWNER
 736 uid_t   config_uid             = CONFIGURE_OWNER;
 737 #else
 738 uid_t   config_uid             = 0;
 739 #endif
 740
 741 int     connection_max_messages= -1;
 742 uschar *continue_proxy_cipher  = NULL;
 743 uschar *continue_hostname      = NULL;
 744 uschar *continue_host_address  = NULL;
 745 int     continue_sequence      = 1;
 746 uschar *continue_transport     = NULL;
 747
 748 uschar *csa_status             = NULL;
 749 cut_t   cutthrough = {
 750   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 751   .delivery =           FALSE,                          /* when to attempt */
 752   .defer_pass =         FALSE,                          /* on defer: spool locally */
 753   .is_tls =             FALSE,                          /* not a TLS conn yet */
 754   .cctx =               {.sock = -1},                   /* open connection */
 755   .nrcpt =              0,                              /* number of addresses */
 756 };
 757
 758 uschar *daemon_smtp_port       = US"smtp";
 759 int     daemon_startup_retries = 9;
 760 int     daemon_startup_sleep   = 30;
 761
 762 #ifdef EXPERIMENTAL_DCC
 763 uschar *dcc_header             = NULL;
 764 uschar *dcc_result             = NULL;
 765 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 766 uschar *dccifd_options         = US"header";
 767 #endif
 768
 769 int     debug_fd               = -1;
 770 FILE   *debug_file             = NULL;
 771 int     debug_notall[]         = {
 772   Di_memory,
 773   Di_noutf8,
 774   -1
 775 };
 776 bit_table debug_options[]      = { /* must be in alphabetical order and use
 777                                  only the enum values from macro.h */
 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, noutf8),
 797   BIT_TABLE(D, pid),
 798   BIT_TABLE(D, process_info),
 799   BIT_TABLE(D, queue_run),
 800   BIT_TABLE(D, receive),
 801   BIT_TABLE(D, resolver),
 802   BIT_TABLE(D, retry),
 803   BIT_TABLE(D, rewrite),
 804   BIT_TABLE(D, route),
 805   BIT_TABLE(D, timestamp),
 806   BIT_TABLE(D, tls),
 807   BIT_TABLE(D, transport),
 808   BIT_TABLE(D, uid),
 809   BIT_TABLE(D, verify),
 810 };
 811 int     debug_options_count    = nelem(debug_options);
 812
 813 unsigned int debug_selector    = 0;
 814 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 815 uschar *delay_warning_condition=
 816   US"${if or {"
 817             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 818             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 819             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 820             "} {no}{yes}}";
 821 uschar *deliver_address_data   = NULL;
 822 int     deliver_datafile       = -1;
 823 const uschar *deliver_domain   = NULL;
 824 uschar *deliver_domain_data    = NULL;
 825 const uschar *deliver_domain_orig = NULL;
 826 const uschar *deliver_domain_parent = NULL;
 827 time_t  deliver_frozen_at      = 0;
 828 uschar *deliver_home           = NULL;
 829 const uschar *deliver_host     = NULL;
 830 const uschar *deliver_host_address = NULL;
 831 int     deliver_host_port      = 0;
 832 uschar *deliver_in_buffer      = NULL;
 833 ino_t   deliver_inode          = 0;
 834 uschar *deliver_localpart      = NULL;
 835 uschar *deliver_localpart_data = NULL;
 836 uschar *deliver_localpart_orig = NULL;
 837 uschar *deliver_localpart_parent = NULL;
 838 uschar *deliver_localpart_prefix = NULL;
 839 uschar *deliver_localpart_suffix = NULL;
 840 uschar *deliver_out_buffer     = NULL;
 841 int     deliver_queue_load_max = -1;
 842 address_item  *deliver_recipients = NULL;
 843 uschar *deliver_selectstring   = NULL;
 844 uschar *deliver_selectstring_sender = NULL;
 845
 846 #ifndef DISABLE_DKIM
 847 unsigned dkim_collect_input      = 0;
 848 uschar *dkim_cur_signer          = NULL;
 849 int     dkim_key_length          = 0;
 850 void   *dkim_signatures          = NULL;
 851 uschar *dkim_signers             = NULL;
 852 uschar *dkim_signing_domain      = NULL;
 853 uschar *dkim_signing_selector    = NULL;
 854 uschar *dkim_verify_overall      = NULL;
 855 uschar *dkim_verify_signers      = US"$dkim_signers";
 856 uschar *dkim_verify_status       = NULL;
 857 uschar *dkim_verify_reason       = NULL;
 858 #endif
 859 #ifdef EXPERIMENTAL_DMARC
 860 uschar *dmarc_domain_policy     = NULL;
 861 uschar *dmarc_forensic_sender   = NULL;
 862 uschar *dmarc_history_file      = NULL;
 863 uschar *dmarc_status            = NULL;
 864 uschar *dmarc_status_text       = NULL;
 865 uschar *dmarc_tld_file          = NULL;
 866 uschar *dmarc_used_domain       = NULL;
 867 #endif
 868
 869 uschar *dns_again_means_nonexist = NULL;
 870 int     dns_csa_search_limit   = 5;
 871 int     dns_cname_loops        = 1;
 872 #ifdef SUPPORT_DANE
 873 int     dns_dane_ok            = -1;
 874 #endif
 875 uschar *dns_ipv4_lookup        = NULL;
 876 int     dns_retrans            = 0;
 877 int     dns_retry              = 0;
 878 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 879 uschar *dns_trust_aa           = NULL;
 880 int     dns_use_edns0          = -1; /* <0 = not coerced */
 881 uschar *dnslist_domain         = NULL;
 882 uschar *dnslist_matched        = NULL;
 883 uschar *dnslist_text           = NULL;
 884 uschar *dnslist_value          = NULL;
 885 tree_node *domainlist_anchor   = NULL;
 886 int     domainlist_count       = 0;
 887 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 888
 889 int     errno_quota            = ERRNO_QUOTA;
 890 uschar *errors_copy            = NULL;
 891 int     error_handling         = ERRORS_SENDER;
 892 uschar *errors_reply_to        = NULL;
 893 int     errors_sender_rc       = EXIT_FAILURE;
 894 #ifndef DISABLE_EVENT
 895 uschar *event_action             = NULL;        /* expansion for delivery events */
 896 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 897 int     event_defer_errno        = 0;
 898 const uschar *event_name         = NULL;        /* event name variable */
 899 #endif
 900
 901
 902 gid_t   exim_gid               = EXIM_GID;
 903 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 904                         "\0<---------------Space to patch exim_path->";
 905 uid_t   exim_uid               = EXIM_UID;
 906 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 907 int     expand_forbid          = 0;
 908 int     expand_nlength[EXPAND_MAXN+1];
 909 int     expand_nmax            = -1;
 910 uschar *expand_nstring[EXPAND_MAXN+1];
 911 uschar *expand_string_message;
 912 uschar *extra_local_interfaces = NULL;
 913
 914 int     fake_response          = OK;
 915 uschar *fake_response_text     = US"Your message has been rejected but is "
 916                                    "being kept for evaluation.\nIf it was a "
 917                                    "legitimate message, it may still be "
 918                                    "delivered to the target recipient(s).";
 919 int     filter_n[FILTER_VARIABLE_COUNT];
 920 int     filter_sn[FILTER_VARIABLE_COUNT];
 921 int     filter_test            = FTEST_NONE;
 922 uschar *filter_test_sfile      = NULL;
 923 uschar *filter_test_ufile      = NULL;
 924 uschar *filter_thisaddress     = NULL;
 925 int     finduser_retries       = 0;
 926 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 927 uschar *freeze_tell            = NULL;
 928 uschar *freeze_tell_config     = NULL;
 929 uschar *fudged_queue_times     = US"";
 930
 931 uschar *gecos_name             = NULL;
 932 uschar *gecos_pattern          = NULL;
 933 rewrite_rule  *global_rewrite_rules = NULL;
 934
 935 volatile sig_atomic_t had_command_timeout = 0;
 936 volatile sig_atomic_t had_command_sigterm = 0;
 937 volatile sig_atomic_t had_data_timeout    = 0;
 938 volatile sig_atomic_t had_data_sigint     = 0;
 939 uschar *headers_charset        = US HEADERS_CHARSET;
 940 int     header_insert_maxlen   = 64 * 1024;
 941 header_line  *header_last      = NULL;
 942 header_line  *header_list      = NULL;
 943 int     header_maxsize         = HEADER_MAXSIZE;
 944 int     header_line_maxsize    = 0;
 945
 946 header_name header_names[] = {
 947   /* name               len     allow_resent    htype */
 948   { US"bcc",            3,      TRUE,           htype_bcc },
 949   { US"cc",             2,      TRUE,           htype_cc },
 950   { US"date",           4,      TRUE,           htype_date },
 951   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 952   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 953   { US"from",           4,      TRUE,           htype_from },
 954   { US"message-id",    10,      TRUE,           htype_id },
 955   { US"received",       8,      FALSE,          htype_received },
 956   { US"reply-to",       8,      FALSE,          htype_reply_to },
 957   { US"return-path",   11,      FALSE,          htype_return_path },
 958   { US"sender",         6,      TRUE,           htype_sender },
 959   { US"subject",        7,      FALSE,          htype_subject },
 960   { US"to",             2,      TRUE,           htype_to }
 961 };
 962
 963 int header_names_size          = nelem(header_names);
 964
 965 uschar *helo_accept_junk_hosts = NULL;
 966 uschar *helo_allow_chars       = US"";
 967 uschar *helo_lookup_domains    = US"@ : @[]";
 968 uschar *helo_try_verify_hosts  = NULL;
 969 uschar *helo_verify_hosts      = NULL;
 970 const uschar *hex_digits       = CUS"0123456789abcdef";
 971 uschar *hold_domains           = NULL;
 972 uschar *host_data              = NULL;
 973 uschar *host_lookup            = NULL;
 974 uschar *host_lookup_order      = US"bydns:byaddr";
 975 uschar *host_lookup_msg        = US"";
 976 int     host_number            = 0;
 977 uschar *host_number_string     = NULL;
 978 uschar *host_reject_connection = NULL;
 979 tree_node *hostlist_anchor     = NULL;
 980 int     hostlist_count         = 0;
 981 uschar *hosts_treat_as_local   = NULL;
 982 uschar *hosts_connection_nolog = NULL;
 983
 984 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 985 uschar *ignore_fromline_hosts  = NULL;
 986 int     inetd_wait_timeout     = -1;
 987 uschar *initial_cwd            = NULL;
 988 uschar *interface_address      = NULL;
 989 int     interface_port         = -1;
 990 uschar *iterate_item           = NULL;
 991
 992 int     journal_fd             = -1;
 993
 994 uschar *keep_environment       = NULL;
 995
 996 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 997
 998 uschar *eldap_dn               = NULL;
 999 int     load_average           = -2;
1000 uschar *local_from_prefix      = NULL;
1001 uschar *local_from_suffix      = NULL;
1002
1003 #if HAVE_IPV6
1004 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
1005 #else
1006 uschar *local_interfaces       = US"0.0.0.0";
1007 #endif
1008
1009 #ifdef HAVE_LOCAL_SCAN
1010 uschar *local_scan_data        = NULL;
1011 int     local_scan_timeout     = 5*60;
1012 #endif
1013 gid_t   local_user_gid         = (gid_t)(-1);
1014 uid_t   local_user_uid         = (uid_t)(-1);
1015
1016 tree_node *localpartlist_anchor= NULL;
1017 int     localpartlist_count    = 0;
1018 uschar *log_buffer             = NULL;
1019
1020 int     log_default[]          = { /* for initializing log_selector */
1021   Li_acl_warn_skipped,
1022   Li_connection_reject,
1023   Li_delay_delivery,
1024   Li_dkim,
1025   Li_dnslist_defer,
1026   Li_etrn,
1027   Li_host_lookup_failed,
1028   Li_lost_incoming_connection,
1029   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1030   Li_queue_run,
1031   Li_rejected_header,
1032   Li_retry_defer,
1033   Li_sender_verify_fail,
1034   Li_size_reject,
1035   Li_skip_delivery,
1036   Li_smtp_confirmation,
1037   Li_tls_certificate_verified,
1038   Li_tls_cipher,
1039   -1
1040 };
1041
1042 uschar *log_file_path          = US LOG_FILE_PATH
1043                            "\0<--------------Space to patch log_file_path->";
1044
1045 int     log_notall[]           = {
1046   -1
1047 };
1048 bit_table log_options[]        = { /* must be in alphabetical order */
1049   BIT_TABLE(L, 8bitmime),
1050   BIT_TABLE(L, acl_warn_skipped),
1051   BIT_TABLE(L, address_rewrite),
1052   BIT_TABLE(L, all),
1053   BIT_TABLE(L, all_parents),
1054   BIT_TABLE(L, arguments),
1055   BIT_TABLE(L, connection_reject),
1056   BIT_TABLE(L, delay_delivery),
1057   BIT_TABLE(L, deliver_time),
1058   BIT_TABLE(L, delivery_size),
1059 #ifndef DISABLE_DKIM
1060   BIT_TABLE(L, dkim),
1061   BIT_TABLE(L, dkim_verbose),
1062 #endif
1063   BIT_TABLE(L, dnslist_defer),
1064   BIT_TABLE(L, dnssec),
1065   BIT_TABLE(L, etrn),
1066   BIT_TABLE(L, host_lookup_failed),
1067   BIT_TABLE(L, ident_timeout),
1068   BIT_TABLE(L, incoming_interface),
1069   BIT_TABLE(L, incoming_port),
1070   BIT_TABLE(L, lost_incoming_connection),
1071   BIT_TABLE(L, millisec),
1072   BIT_TABLE(L, outgoing_interface),
1073   BIT_TABLE(L, outgoing_port),
1074   BIT_TABLE(L, pid),
1075   BIT_TABLE(L, pipelining),
1076 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1077   BIT_TABLE(L, proxy),
1078 #endif
1079   BIT_TABLE(L, queue_run),
1080   BIT_TABLE(L, queue_time),
1081   BIT_TABLE(L, queue_time_overall),
1082   BIT_TABLE(L, receive_time),
1083   BIT_TABLE(L, received_recipients),
1084   BIT_TABLE(L, received_sender),
1085   BIT_TABLE(L, rejected_header),
1086   { US"rejected_headers", Li_rejected_header },
1087   BIT_TABLE(L, retry_defer),
1088   BIT_TABLE(L, return_path_on_delivery),
1089   BIT_TABLE(L, sender_on_delivery),
1090   BIT_TABLE(L, sender_verify_fail),
1091   BIT_TABLE(L, size_reject),
1092   BIT_TABLE(L, skip_delivery),
1093   BIT_TABLE(L, smtp_confirmation),
1094   BIT_TABLE(L, smtp_connection),
1095   BIT_TABLE(L, smtp_incomplete_transaction),
1096   BIT_TABLE(L, smtp_mailauth),
1097   BIT_TABLE(L, smtp_no_mail),
1098   BIT_TABLE(L, smtp_protocol_error),
1099   BIT_TABLE(L, smtp_syntax_error),
1100   BIT_TABLE(L, subject),
1101   BIT_TABLE(L, tls_certificate_verified),
1102   BIT_TABLE(L, tls_cipher),
1103   BIT_TABLE(L, tls_peerdn),
1104   BIT_TABLE(L, tls_sni),
1105   BIT_TABLE(L, unknown_in_list),
1106 };
1107 int     log_options_count      = nelem(log_options);
1108
1109 int     log_reject_target      = 0;
1110 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1111 uschar *log_selector_string    = NULL;
1112 FILE   *log_stderr             = NULL;
1113 uschar *login_sender_address   = NULL;
1114 uschar *lookup_dnssec_authenticated = NULL;
1115 int     lookup_open_max        = 25;
1116 uschar *lookup_value           = NULL;
1117
1118 macro_item *macros_user        = NULL;
1119 uschar *mailstore_basename     = NULL;
1120 #ifdef WITH_CONTENT_SCAN
1121 uschar *malware_name           = NULL;  /* Virus Name */
1122 #endif
1123 int     max_received_linelength= 0;
1124 int     max_username_length    = 0;
1125 int     message_age            = 0;
1126 uschar *message_body           = NULL;
1127 uschar *message_body_end       = NULL;
1128 int     message_body_size      = 0;
1129 int     message_body_visible   = 500;
1130 int     message_ended          = END_NOTSTARTED;
1131 uschar *message_headers        = NULL;
1132 uschar *message_id;
1133 uschar *message_id_domain      = NULL;
1134 uschar *message_id_text        = NULL;
1135 struct timeval message_id_tv   = { 0, 0 };
1136 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1137 uschar *message_id_external;
1138 int     message_linecount      = 0;
1139 int     message_size           = 0;
1140 uschar *message_size_limit     = US"50M";
1141 #ifdef SUPPORT_I18N
1142 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1143 #endif
1144 uschar  message_subdir[2]      = { 0, 0 };
1145 uschar *message_reference      = NULL;
1146
1147 /* MIME ACL expandables */
1148 #ifdef WITH_CONTENT_SCAN
1149 int     mime_anomaly_level     = 0;
1150 const uschar *mime_anomaly_text      = NULL;
1151 uschar *mime_boundary          = NULL;
1152 uschar *mime_charset           = NULL;
1153 uschar *mime_content_description = NULL;
1154 uschar *mime_content_disposition = NULL;
1155 uschar *mime_content_id        = NULL;
1156 unsigned int mime_content_size = 0;
1157 uschar *mime_content_transfer_encoding = NULL;
1158 uschar *mime_content_type      = NULL;
1159 uschar *mime_decoded_filename  = NULL;
1160 uschar *mime_filename          = NULL;
1161 int     mime_is_multipart      = 0;
1162 int     mime_is_coverletter    = 0;
1163 int     mime_is_rfc822         = 0;
1164 int     mime_part_count        = -1;
1165 #endif
1166
1167 uid_t  *never_users            = NULL;
1168
1169 const int on                   = 1;     /* for setsockopt */
1170 const int off                  = 0;
1171
1172 uid_t   original_euid;
1173 gid_t   originator_gid;
1174 uschar *originator_login       = NULL;
1175 uschar *originator_name        = NULL;
1176 uid_t   originator_uid;
1177 uschar *override_local_interfaces = NULL;
1178 uschar *override_pid_file_path = NULL;
1179
1180 uschar *percent_hack_domains   = NULL;
1181 uschar *pid_file_path          = US PID_FILE_PATH
1182                            "\0<--------------Space to patch pid_file_path->";
1183 uschar *pipelining_advertise_hosts = US"*";
1184 uschar *primary_hostname       = NULL;
1185 uschar  process_info[PROCESS_INFO_SIZE];
1186 int     process_info_len       = 0;
1187 uschar *process_log_path       = NULL;
1188
1189 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1190 uschar *hosts_proxy            = NULL;
1191 uschar *proxy_external_address = NULL;
1192 int     proxy_external_port    = 0;
1193 uschar *proxy_local_address    = NULL;
1194 int     proxy_local_port       = 0;
1195 #endif
1196
1197 uschar *prvscheck_address      = NULL;
1198 uschar *prvscheck_keynum       = NULL;
1199 uschar *prvscheck_result       = NULL;
1200
1201
1202 const uschar *qualify_domain_recipient = NULL;
1203 uschar *qualify_domain_sender  = NULL;
1204 uschar *queue_domains          = NULL;
1205 int     queue_interval         = -1;
1206 uschar *queue_name             = US"";
1207 uschar *queue_only_file        = NULL;
1208 int     queue_only_load        = -1;
1209 uschar *queue_run_max          = US"5";
1210 pid_t   queue_run_pid          = (pid_t)0;
1211 int     queue_run_pipe         = -1;
1212 uschar *queue_smtp_domains     = NULL;
1213
1214 unsigned int random_seed       = 0;
1215 tree_node *ratelimiters_cmd    = NULL;
1216 tree_node *ratelimiters_conn   = NULL;
1217 tree_node *ratelimiters_mail   = NULL;
1218 uschar *raw_active_hostname    = NULL;
1219 uschar *raw_sender             = NULL;
1220 uschar **raw_recipients        = NULL;
1221 int     raw_recipients_count   = 0;
1222
1223 int     rcpt_count             = 0;
1224 int     rcpt_fail_count        = 0;
1225 int     rcpt_defer_count       = 0;
1226 gid_t   real_gid;
1227 uid_t   real_uid;
1228 int     receive_linecount      = 0;
1229 int     receive_messagecount   = 0;
1230 int     receive_timeout        = 0;
1231 int     received_count         = 0;
1232 uschar *received_for           = NULL;
1233
1234 /*  This is the default text for Received headers generated by Exim. The
1235 date  will be automatically added on the end. */
1236
1237 uschar *received_header_text   = US
1238      "Received: "
1239      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1240      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1241      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1242      "by $primary_hostname "
1243      "${if def:received_protocol {with $received_protocol}} "
1244      #ifdef SUPPORT_TLS
1245      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1246      #endif
1247      "(Exim $version_number)\n\t"
1248      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1249      "id $message_exim_id"
1250      "${if def:received_for {\n\tfor $received_for}}"
1251      "\0<---------------Space to patch received_header_text->";
1252
1253 int     received_headers_max   = 30;
1254 uschar *received_protocol      = NULL;
1255 struct timeval received_time   = { 0, 0 };
1256 struct timeval received_time_taken = { 0, 0 };
1257 uschar *recipient_data         = NULL;
1258 uschar *recipient_unqualified_hosts = NULL;
1259 uschar *recipient_verify_failure = NULL;
1260 int     recipients_count       = 0;
1261 recipient_item  *recipients_list = NULL;
1262 int     recipients_list_max    = 0;
1263 int     recipients_max         = 0;
1264 const pcre *regex_AUTH         = NULL;
1265 const pcre *regex_check_dns_names = NULL;
1266 const pcre *regex_From         = NULL;
1267 const pcre *regex_IGNOREQUOTA  = NULL;
1268 const pcre *regex_PIPELINING   = NULL;
1269 const pcre *regex_SIZE         = NULL;
1270 const pcre *regex_ismsgid      = NULL;
1271 const pcre *regex_smtp_code    = NULL;
1272 uschar *regex_vars[REGEX_VARS];
1273 #ifdef WHITELIST_D_MACROS
1274 const pcre *regex_whitelisted_macro = NULL;
1275 #endif
1276 #ifdef WITH_CONTENT_SCAN
1277 uschar *regex_match_string     = NULL;
1278 #endif
1279 int     remote_delivery_count  = 0;
1280 int     remote_max_parallel    = 2;
1281 uschar *remote_sort_domains    = NULL;
1282 int     retry_data_expire      = 7*24*60*60;
1283 int     retry_interval_max     = 24*60*60;
1284 int     retry_maximum_timeout  = 0;        /* set from retry config */
1285 retry_config  *retries         = NULL;
1286 uschar *return_path            = NULL;
1287 int     rewrite_existflags     = 0;
1288 uschar *rfc1413_hosts          = US"@[]";
1289 int     rfc1413_query_timeout  = 0;
1290 uid_t   root_gid               = ROOT_GID;
1291 uid_t   root_uid               = ROOT_UID;
1292
1293 router_instance  *routers  = NULL;
1294 router_instance  router_defaults = {
1295     .next =                     NULL,
1296     .name =                     NULL,
1297     .info =                     NULL,
1298     .options_block =            NULL,
1299     .driver_name =              NULL,
1300
1301     .address_data =             NULL,
1302 #ifdef EXPERIMENTAL_BRIGHTMAIL
1303     .bmi_rule =                 NULL,
1304 #endif
1305     .cannot_route_message =     NULL,
1306     .condition =                NULL,
1307     .current_directory =        NULL,
1308     .debug_string =             NULL,
1309     .domains =                  NULL,
1310     .errors_to =                NULL,
1311     .expand_gid =               NULL,
1312     .expand_uid =               NULL,
1313     .expand_more =              NULL,
1314     .expand_unseen =            NULL,
1315     .extra_headers =            NULL,
1316     .fallback_hosts =           NULL,
1317     .home_directory =           NULL,
1318     .ignore_target_hosts =      NULL,
1319     .local_parts =              NULL,
1320     .pass_router_name =         NULL,
1321     .prefix =                   NULL,
1322     .redirect_router_name =     NULL,
1323     .remove_headers =           NULL,
1324     .require_files =            NULL,
1325     .router_home_directory =    NULL,
1326     .self =                     US"freeze",
1327     .senders =                  NULL,
1328     .suffix =                   NULL,
1329     .translate_ip_address =     NULL,
1330     .transport_name =           NULL,
1331
1332     .address_test =             TRUE,
1333 #ifdef EXPERIMENTAL_BRIGHTMAIL
1334     .bmi_deliver_alternate =    FALSE,
1335     .bmi_deliver_default =      FALSE,
1336     .bmi_dont_deliver =         FALSE,
1337 #endif
1338     .expn =                     TRUE,
1339     .caseful_local_part =       FALSE,
1340     .check_local_user =         FALSE,
1341     .disable_logging =          FALSE,
1342     .fail_verify_recipient =    FALSE,
1343     .fail_verify_sender =       FALSE,
1344     .gid_set =                  FALSE,
1345     .initgroups =               FALSE,
1346     .log_as_local =             TRUE_UNSET,
1347     .more =                     TRUE,
1348     .pass_on_timeout =          FALSE,
1349     .prefix_optional =          FALSE,
1350     .repeat_use =               TRUE,
1351     .retry_use_local_part =     TRUE_UNSET,
1352     .same_domain_copy_routing = FALSE,
1353     .self_rewrite =             FALSE,
1354     .suffix_optional =          FALSE,
1355     .verify_only =              FALSE,
1356     .verify_recipient =         TRUE,
1357     .verify_sender =            TRUE,
1358     .uid_set =                  FALSE,
1359     .unseen =                   FALSE,
1360     .dsn_lasthop =              FALSE,
1361
1362     .self_code =                self_freeze,
1363     .uid =                      (uid_t)(-1),
1364     .gid =                      (gid_t)(-1),
1365
1366     .fallback_hostlist =        NULL,
1367     .transport =                NULL,
1368     .pass_router =              NULL,
1369     .redirect_router =          NULL,
1370
1371     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1372 };
1373
1374 uschar *router_name            = NULL;
1375
1376 ip_address_item *running_interfaces = NULL;
1377
1378 /* This is a weird one. The following string gets patched in the binary by the
1379 script that sets up a copy of Exim for running in the test harness. It seems
1380 that compilers are now clever, and share constant strings if they can.
1381 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1382 make use of the end of this string in order to save space. So the patching then
1383 wrecks this. We defeat this optimization by adding some additional characters
1384 onto the end of the string. */
1385
1386 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1387
1388 int     runrc                  = 0;
1389
1390 uschar *search_error_message   = NULL;
1391 uschar *self_hostname          = NULL;
1392 uschar *sender_address         = NULL;
1393 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1394 uschar *sender_address_data    = NULL;
1395 uschar *sender_address_unrewritten = NULL;
1396 uschar *sender_data            = NULL;
1397 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1398 uschar *sender_fullhost        = NULL;
1399 uschar *sender_helo_name       = NULL;
1400 uschar **sender_host_aliases   = &no_aliases;
1401 uschar *sender_host_address    = NULL;
1402 uschar *sender_host_authenticated = NULL;
1403 uschar *sender_host_auth_pubname  = NULL;
1404 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1405 uschar *sender_host_name       = NULL;
1406 int     sender_host_port       = 0;
1407 uschar *sender_ident           = NULL;
1408 uschar *sender_rate            = NULL;
1409 uschar *sender_rate_limit      = NULL;
1410 uschar *sender_rate_period     = NULL;
1411 uschar *sender_rcvhost         = NULL;
1412 uschar *sender_unqualified_hosts = NULL;
1413 uschar *sender_verify_failure = NULL;
1414 address_item *sender_verified_list  = NULL;
1415 address_item *sender_verified_failed = NULL;
1416 int     sender_verified_rc     = -1;
1417 uschar *sending_ip_address     = NULL;
1418 int     sending_port           = -1;
1419 SIGNAL_BOOL sigalrm_seen       = FALSE;
1420 uschar **sighup_argv           = NULL;
1421 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1422 int     smtp_accept_count      = 0;
1423 int     smtp_accept_max        = 20;
1424 int     smtp_accept_max_nonmail= 10;
1425 uschar *smtp_accept_max_nonmail_hosts = US"*";
1426 int     smtp_accept_max_per_connection = 1000;
1427 uschar *smtp_accept_max_per_host = NULL;
1428 int     smtp_accept_queue      = 0;
1429 int     smtp_accept_queue_per_connection = 10;
1430 int     smtp_accept_reserve    = 0;
1431 uschar *smtp_active_hostname   = NULL;
1432 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1433                              "Exim $version_number $tod_full"
1434                              "\0<---------------Space to patch smtp_banner->";
1435 int     smtp_ch_index          = 0;
1436 uschar *smtp_cmd_argument      = NULL;
1437 uschar *smtp_cmd_buffer        = NULL;
1438 struct timeval smtp_connection_start  = {0,0};
1439 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1440 int     smtp_connect_backlog   = 20;
1441 double  smtp_delay_mail        = 0.0;
1442 double  smtp_delay_rcpt        = 0.0;
1443 FILE   *smtp_in                = NULL;
1444 int     smtp_load_reserve      = -1;
1445 int     smtp_mailcmd_count     = 0;
1446 FILE   *smtp_out               = NULL;
1447 uschar *smtp_etrn_command      = NULL;
1448 int     smtp_max_synprot_errors= 3;
1449 int     smtp_max_unknown_commands = 3;
1450 uschar *smtp_notquit_reason    = NULL;
1451 uschar *smtp_ratelimit_hosts   = NULL;
1452 uschar *smtp_ratelimit_mail    = NULL;
1453 uschar *smtp_ratelimit_rcpt    = NULL;
1454 uschar *smtp_read_error        = US"";
1455 int     smtp_receive_timeout   = 5*60;
1456 uschar *smtp_receive_timeout_s = NULL;
1457 uschar *smtp_reserve_hosts     = NULL;
1458 int     smtp_rlm_base          = 0;
1459 double  smtp_rlm_factor        = 0.0;
1460 int     smtp_rlm_limit         = 0;
1461 int     smtp_rlm_threshold     = INT_MAX;
1462 int     smtp_rlr_base          = 0;
1463 double  smtp_rlr_factor        = 0.0;
1464 int     smtp_rlr_limit         = 0;
1465 int     smtp_rlr_threshold     = INT_MAX;
1466 unsigned smtp_peer_options     = 0;
1467 unsigned smtp_peer_options_wrap= 0;
1468 #ifdef SUPPORT_I18N
1469 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1470 #endif
1471
1472 #ifdef WITH_CONTENT_SCAN
1473 uschar *spamd_address          = US"127.0.0.1 783";
1474 uschar *spam_bar               = NULL;
1475 uschar *spam_report            = NULL;
1476 uschar *spam_action            = NULL;
1477 uschar *spam_score             = NULL;
1478 uschar *spam_score_int         = NULL;
1479 #endif
1480 #ifdef SUPPORT_SPF
1481 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1482 uschar *spf_header_comment     = NULL;
1483 uschar *spf_received           = NULL;
1484 uschar *spf_result             = NULL;
1485 uschar *spf_smtp_comment       = NULL;
1486 #endif
1487
1488 FILE   *spool_data_file        = NULL;
1489 uschar *spool_directory        = US SPOOL_DIRECTORY
1490                            "\0<--------------Space to patch spool_directory->";
1491 #ifdef EXPERIMENTAL_SRS
1492 uschar *srs_config             = NULL;
1493 uschar *srs_db_address         = NULL;
1494 uschar *srs_db_key             = NULL;
1495 int     srs_hashlength         = 6;
1496 int     srs_hashmin            = -1;
1497 int     srs_maxage             = 31;
1498 uschar *srs_orig_recipient     = NULL;
1499 uschar *srs_orig_sender        = NULL;
1500 uschar *srs_recipient          = NULL;
1501 uschar *srs_secrets            = NULL;
1502 uschar *srs_status             = NULL;
1503 #endif
1504 int     string_datestamp_offset= -1;
1505 int     string_datestamp_length= 0;
1506 int     string_datestamp_type  = -1;
1507 uschar *submission_domain      = NULL;
1508 uschar *submission_name        = NULL;
1509 int     syslog_facility        = LOG_MAIL;
1510 uschar *syslog_processname     = US"exim";
1511 uschar *system_filter          = NULL;
1512
1513 uschar *system_filter_directory_transport = NULL;
1514 uschar *system_filter_file_transport = NULL;
1515 uschar *system_filter_pipe_transport = NULL;
1516 uschar *system_filter_reply_transport = NULL;
1517
1518 gid_t   system_filter_gid      = 0;
1519 uid_t   system_filter_uid      = (uid_t)-1;
1520
1521 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1522 int     tcp_out_fastopen       = 0;
1523 #ifdef USE_TCP_WRAPPERS
1524 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1525 #endif
1526 int     test_harness_load_avg  = 0;
1527 int     thismessage_size_limit = 0;
1528 int     timeout_frozen_after   = 0;
1529
1530 transport_instance  *transports = NULL;
1531
1532 transport_instance  transport_defaults = {
1533     .next =                     NULL,
1534     .name =                     NULL,
1535     .info =                     NULL,
1536     .options_block =            NULL,
1537     .driver_name =              NULL,
1538     .setup =                    NULL,
1539     .batch_max =                1,
1540     .batch_id =                 NULL,
1541     .home_dir =                 NULL,
1542     .current_dir =              NULL,
1543     .expand_multi_domain =      NULL,
1544     .multi_domain =             TRUE,
1545     .overrides_hosts =          FALSE,
1546     .max_addresses =            100,
1547     .connection_max_messages =  500,
1548     .deliver_as_creator =       FALSE,
1549     .disable_logging =          FALSE,
1550     .initgroups =               FALSE,
1551     .uid_set =                  FALSE,
1552     .gid_set =                  FALSE,
1553     .uid =                      (uid_t)(-1),
1554     .gid =                      (gid_t)(-1),
1555     .expand_uid =               NULL,
1556     .expand_gid =               NULL,
1557     .warn_message =             NULL,
1558     .shadow =                   NULL,
1559     .shadow_condition =         NULL,
1560     .filter_command =           NULL,
1561     .add_headers =              NULL,
1562     .remove_headers =           NULL,
1563     .return_path =              NULL,
1564     .debug_string =             NULL,
1565     .max_parallel =             NULL,
1566     .message_size_limit =       NULL,
1567     .headers_rewrite =          NULL,
1568     .rewrite_rules =            NULL,
1569     .rewrite_existflags =       0,
1570     .filter_timeout =           300,
1571     .body_only =                FALSE,
1572     .delivery_date_add =        FALSE,
1573     .envelope_to_add =          FALSE,
1574     .headers_only =             FALSE,
1575     .rcpt_include_affixes =     FALSE,
1576     .return_path_add =          FALSE,
1577     .return_output =            FALSE,
1578     .return_fail_output =       FALSE,
1579     .log_output =               FALSE,
1580     .log_fail_output =          FALSE,
1581     .log_defer_output =         FALSE,
1582     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1583                                                  1 nor 0 so can detect unset */
1584 #ifndef DISABLE_EVENT
1585    .event_action =              NULL
1586 #endif
1587 };
1588
1589 int     transport_count;
1590 uschar *transport_name          = NULL;
1591 int     transport_newlines;
1592 const uschar **transport_filter_argv  = NULL;
1593 int     transport_filter_timeout;
1594 int     transport_write_timeout= 0;
1595
1596 tree_node  *tree_dns_fails     = NULL;
1597 tree_node  *tree_duplicates    = NULL;
1598 tree_node  *tree_nonrecipients = NULL;
1599 tree_node  *tree_unusable      = NULL;
1600
1601 gid_t  *trusted_groups         = NULL;
1602 uid_t  *trusted_users          = NULL;
1603 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1604
1605 uschar *unknown_login          = NULL;
1606 uschar *unknown_username       = NULL;
1607 uschar *untrusted_set_sender   = NULL;
1608
1609 /*  A regex for matching a "From_" line in an incoming message, in the form
1610
1611     From ph10 Fri Jan  5 12:35 GMT 1996
1612
1613 which  the "mail" commands send to the MTA (undocumented, of course), or in
1614 the  form
1615
1616     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1617
1618 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1619 Because  of variations in time formats, just match up to the minutes. That
1620 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1621 so  just require one digit for hours and minutes. The weekday is also absent
1622 in  some forms. */
1623
1624 uschar *uucp_from_pattern      = US
1625    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1626    "(?:"                                          /* Non-extracting bracket */
1627    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1628    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1629    ")"                                            /* End alternation */
1630    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1631
1632 uschar *uucp_from_sender       = US"$1";
1633
1634 uschar *verify_mode            = NULL;
1635 uschar *version_copyright      =
1636  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1637    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018";
1638 uschar *version_date           = US"?";
1639 uschar *version_cnumber        = US"????";
1640 uschar *version_string         = US"?";
1641
1642 uschar *warn_message_file      = NULL;
1643 int     warning_count          = 0;
1644 uschar *warnmsg_delay          = NULL;
1645 uschar *warnmsg_recipients     = NULL;
1646
1647
1648 /*  End of globals.c */