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  /* all other elements zero */
 107 };
 108 tls_support tls_out = {
 109  .active =              {.sock = -1},
 110  /* all other elements zero */
 111 };
 112
 113 uschar *dsn_envid              = NULL;
 114 int     dsn_ret                = 0;
 115 const pcre  *regex_DSN         = NULL;
 116 uschar *dsn_advertise_hosts    = NULL;
 117
 118 #ifdef SUPPORT_TLS
 119 BOOL    gnutls_compat_mode     = FALSE;
 120 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 121 uschar *openssl_options        = NULL;
 122 const pcre *regex_STARTTLS     = NULL;
 123 uschar *tls_advertise_hosts    = US"*";
 124 uschar *tls_certificate        = NULL;
 125 uschar *tls_crl                = NULL;
 126 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 127 that's the interop problem which has been observed: GnuTLS suggesting a higher
 128 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 129 int     tls_dh_max_bits        = 2236;
 130 uschar *tls_dhparam            = NULL;
 131 uschar *tls_eccurve            = US"auto";
 132 # ifndef DISABLE_OCSP
 133 uschar *tls_ocsp_file          = NULL;
 134 # endif
 135 uschar *tls_privatekey         = NULL;
 136 BOOL    tls_remember_esmtp     = FALSE;
 137 uschar *tls_require_ciphers    = NULL;
 138 # ifdef EXPERIMENTAL_TLS_RESUME
 139 uschar *tls_resumption_hosts   = NULL;
 140 # endif
 141 uschar *tls_try_verify_hosts   = NULL;
 142 uschar *tls_verify_certificates= US"system";
 143 uschar *tls_verify_hosts       = NULL;
 144 #else   /*!SUPPORT_TLS*/
 145 uschar *tls_advertise_hosts    = NULL;
 146 #endif
 147
 148 #ifndef DISABLE_PRDR
 149 /* Per Recipient Data Response variables */
 150 BOOL    prdr_enable            = FALSE;
 151 BOOL    prdr_requested         = FALSE;
 152 const pcre *regex_PRDR         = NULL;
 153 #endif
 154
 155 #ifdef SUPPORT_I18N
 156 const pcre *regex_UTF8         = NULL;
 157 #endif
 158
 159 /* Input-reading functions for messages, so we can use special ones for
 160 incoming TCP/IP. The defaults use stdin. We never need these for any
 161 stand-alone tests. */
 162
 163 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 164 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 165 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 166 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 167 int (*receive_getc)(unsigned)  = stdin_getc;
 168 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 169 void (*receive_get_cache)(void)= NULL;
 170 int (*receive_ungetc)(int)     = stdin_ungetc;
 171 int (*receive_feof)(void)      = stdin_feof;
 172 int (*receive_ferror)(void)    = stdin_ferror;
 173 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 174 #endif
 175
 176
 177 /* List of per-address expansion variables for clearing and saving/restoring
 178 when verifying one address while routing/verifying another. We have to have
 179 the size explicit, because it is referenced from more than one module. */
 180
 181 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 182   CUSS &deliver_address_data,
 183   CUSS &deliver_domain,
 184   CUSS &deliver_domain_data,
 185   CUSS &deliver_domain_orig,
 186   CUSS &deliver_domain_parent,
 187   CUSS &deliver_localpart,
 188   CUSS &deliver_localpart_data,
 189   CUSS &deliver_localpart_orig,
 190   CUSS &deliver_localpart_parent,
 191   CUSS &deliver_localpart_prefix,
 192   CUSS &deliver_localpart_suffix,
 193   CUSS (uschar **)(&deliver_recipients),
 194   CUSS &deliver_host,
 195   CUSS &deliver_home,
 196   CUSS &address_file,
 197   CUSS &address_pipe,
 198   CUSS &self_hostname,
 199   NULL };
 200
 201 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 202
 203 /******************************************************************************/
 204 /* General global variables.  Boolean flags are done as a group
 205 so that only one bit each is needed, packed, for all those we never
 206 need to take a pointer - and only a char for the rest.
 207 This means a struct, unfortunately since it clutters the sourcecode. */
 208
 209 struct global_flags f =
 210 {
 211         .acl_temp_details       = FALSE,
 212         .active_local_from_check = FALSE,
 213         .active_local_sender_retain = FALSE,
 214         .address_test_mode      = FALSE,
 215         .admin_user             = FALSE,
 216         .allow_auth_unadvertised= FALSE,
 217         .allow_unqualified_recipient = TRUE,    /* For local messages */
 218         .allow_unqualified_sender = TRUE,       /* Reset for SMTP */
 219         .authentication_local   = FALSE,
 220
 221         .background_daemon      = TRUE,
 222
 223         .chunking_offered       = FALSE,
 224         .config_changed         = FALSE,
 225         .continue_more          = FALSE,
 226
 227         .daemon_listen          = FALSE,
 228         .debug_daemon           = FALSE,
 229         .deliver_firsttime      = FALSE,
 230         .deliver_force          = FALSE,
 231         .deliver_freeze         = FALSE,
 232         .deliver_force_thaw     = FALSE,
 233         .deliver_manual_thaw    = FALSE,
 234         .deliver_selectstring_regex = FALSE,
 235         .deliver_selectstring_sender_regex = FALSE,
 236         .disable_callout_flush  = FALSE,
 237         .disable_delay_flush    = FALSE,
 238         .disable_logging        = FALSE,
 239 #ifndef DISABLE_DKIM
 240         .dkim_disable_verify      = FALSE,
 241 #endif
 242 #ifdef EXPERIMENTAL_DMARC
 243         .dmarc_has_been_checked  = FALSE,
 244         .dmarc_disable_verify    = FALSE,
 245         .dmarc_enable_forensic   = FALSE,
 246 #endif
 247         .dont_deliver           = FALSE,
 248         .dot_ends               = TRUE,
 249
 250         .enable_dollar_recipients = FALSE,
 251         .expand_string_forcedfail = FALSE,
 252
 253         .filter_running         = FALSE,
 254
 255         .header_rewritten       = FALSE,
 256         .helo_verified          = FALSE,
 257         .helo_verify_failed     = FALSE,
 258         .host_checking_callout  = FALSE,
 259         .host_find_failed_syntax= FALSE,
 260
 261         .inetd_wait_mode        = FALSE,
 262         .is_inetd               = FALSE,
 263
 264         .local_error_message    = FALSE,
 265         .log_testing_mode       = FALSE,
 266
 267 #ifdef WITH_CONTENT_SCAN
 268         .no_mbox_unspool        = FALSE,
 269 #endif
 270         .no_multiline_responses = FALSE,
 271
 272         .parse_allow_group      = FALSE,
 273         .parse_found_group      = FALSE,
 274         .pipelining_enable      = TRUE,
 275 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 276         .proxy_session_failed   = FALSE,
 277 #endif
 278
 279         .queue_2stage           = FALSE,
 280         .queue_only_policy      = FALSE,
 281         .queue_run_first_delivery = FALSE,
 282         .queue_run_force        = FALSE,
 283         .queue_run_local        = FALSE,
 284         .queue_running          = FALSE,
 285         .queue_smtp             = FALSE,
 286
 287         .really_exim            = TRUE,
 288         .receive_call_bombout   = FALSE,
 289         .recipients_discarded   = FALSE,
 290         .running_in_test_harness = FALSE,
 291
 292         .search_find_defer      = FALSE,
 293         .sender_address_forced  = FALSE,
 294         .sender_host_notsocket  = FALSE,
 295         .sender_host_unknown    = FALSE,
 296         .sender_local           = FALSE,
 297         .sender_name_forced     = FALSE,
 298         .sender_set_untrusted   = FALSE,
 299         .smtp_authenticated     = FALSE,
 300 #ifdef EXPERIMENTAL_PIPE_CONNECT
 301         .smtp_in_early_pipe_advertised = FALSE,
 302         .smtp_in_early_pipe_no_auth = FALSE,
 303         .smtp_in_early_pipe_used = FALSE,
 304 #endif
 305         .smtp_in_pipelining_advertised = FALSE,
 306         .smtp_in_pipelining_used = FALSE,
 307         .spool_file_wireformat  = FALSE,
 308         .submission_mode        = FALSE,
 309         .suppress_local_fixups  = FALSE,
 310         .suppress_local_fixups_default = FALSE,
 311         .synchronous_delivery   = FALSE,
 312         .system_filtering       = FALSE,
 313
 314         .tcp_fastopen_ok        = FALSE,
 315         .tcp_in_fastopen        = FALSE,
 316         .tcp_in_fastopen_data   = FALSE,
 317         .tcp_in_fastopen_logged = FALSE,
 318         .tcp_out_fastopen_logged= FALSE,
 319         .timestamps_utc         = FALSE,
 320         .transport_filter_timed_out = FALSE,
 321         .trusted_caller         = FALSE,
 322         .trusted_config         = TRUE,
 323 };
 324
 325 /******************************************************************************/
 326 /* These are the flags which are either variables or mainsection options,
 327 so an address is needed for access, or are exported to local_scan. */
 328
 329 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 330 BOOL    allow_domain_literals  = FALSE;
 331 BOOL    allow_mx_to_ip         = FALSE;
 332 BOOL    allow_utf8_domains     = FALSE;
 333 BOOL    authentication_failed  = FALSE;
 334
 335 BOOL    bounce_return_body     = TRUE;
 336 BOOL    bounce_return_message  = TRUE;
 337 BOOL    check_rfc2047_length   = TRUE;
 338 BOOL    commandline_checks_require_admin = FALSE;
 339
 340 #ifdef EXPERIMENTAL_DCC
 341 BOOL    dcc_direct_add_header  = FALSE;
 342 #endif
 343 BOOL    debug_store            = FALSE;
 344 BOOL    delivery_date_remove   = TRUE;
 345 BOOL    deliver_drop_privilege = FALSE;
 346 #ifdef ENABLE_DISABLE_FSYNC
 347 BOOL    disable_fsync          = FALSE;
 348 #endif
 349 BOOL    disable_ipv6           = FALSE;
 350 BOOL    dns_csa_use_reverse    = TRUE;
 351 BOOL    drop_cr                = FALSE;         /* No longer used */
 352
 353 BOOL    envelope_to_remove     = TRUE;
 354 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 355 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 356 BOOL    extract_addresses_remove_arguments = TRUE;
 357
 358 BOOL    host_checking          = FALSE;
 359 BOOL    host_lookup_deferred   = FALSE;
 360 BOOL    host_lookup_failed     = FALSE;
 361 BOOL    ignore_fromline_local  = FALSE;
 362
 363 BOOL    local_from_check       = TRUE;
 364 BOOL    local_sender_retain    = FALSE;
 365 BOOL    log_timezone           = FALSE;
 366 BOOL    message_body_newlines  = FALSE;
 367 BOOL    message_logs           = TRUE;
 368 #ifdef SUPPORT_I18N
 369 BOOL    message_smtputf8       = FALSE;
 370 #endif
 371 BOOL    mua_wrapper            = FALSE;
 372
 373 BOOL    preserve_message_logs  = FALSE;
 374 BOOL    print_topbitchars      = FALSE;
 375 BOOL    prod_requires_admin    = TRUE;
 376 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 377 BOOL    proxy_session          = FALSE;
 378 #endif
 379
 380 BOOL    queue_list_requires_admin = TRUE;
 381 BOOL    queue_only             = FALSE;
 382 BOOL    queue_only_load_latch  = TRUE;
 383 BOOL    queue_only_override    = TRUE;
 384 BOOL    queue_run_in_order     = FALSE;
 385 BOOL    recipients_max_reject  = FALSE;
 386 BOOL    return_path_remove     = TRUE;
 387
 388 BOOL    smtp_batched_input     = FALSE;
 389 BOOL    sender_helo_dnssec     = FALSE;
 390 BOOL    sender_host_dnssec     = FALSE;
 391 BOOL    smtp_accept_keepalive  = TRUE;
 392 BOOL    smtp_check_spool_space = TRUE;
 393 BOOL    smtp_enforce_sync      = TRUE;
 394 BOOL    smtp_etrn_serialize    = TRUE;
 395 BOOL    smtp_input             = FALSE;
 396 BOOL    smtp_return_error_details = FALSE;
 397 #ifdef SUPPORT_SPF
 398 BOOL    spf_result_guessed     = FALSE;
 399 #endif
 400 BOOL    split_spool_directory  = FALSE;
 401 BOOL    spool_wireformat       = FALSE;
 402 #ifdef EXPERIMENTAL_SRS
 403 BOOL    srs_usehash            = TRUE;
 404 BOOL    srs_usetimestamp       = TRUE;
 405 #endif
 406 BOOL    strict_acl_vars        = FALSE;
 407 BOOL    strip_excess_angle_brackets = FALSE;
 408 BOOL    strip_trailing_dot     = FALSE;
 409 BOOL    syslog_duplication     = TRUE;
 410 BOOL    syslog_pid             = TRUE;
 411 BOOL    syslog_timestamp       = TRUE;
 412 BOOL    system_filter_gid_set  = FALSE;
 413 BOOL    system_filter_uid_set  = FALSE;
 414
 415 BOOL    tcp_nodelay            = TRUE;
 416 BOOL    write_rejectlog        = TRUE;
 417
 418 /******************************************************************************/
 419
 420 header_line *acl_added_headers = NULL;
 421 tree_node *acl_anchor          = NULL;
 422 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 423                                   NULL, NULL, NULL, NULL};
 424 int     acl_narg               = 0;
 425
 426 int     acl_level              = 0;
 427
 428 uschar *acl_not_smtp           = NULL;
 429 #ifdef WITH_CONTENT_SCAN
 430 uschar *acl_not_smtp_mime      = NULL;
 431 #endif
 432 uschar *acl_not_smtp_start     = NULL;
 433 uschar *acl_removed_headers    = NULL;
 434 uschar *acl_smtp_auth          = NULL;
 435 uschar *acl_smtp_connect       = NULL;
 436 uschar *acl_smtp_data          = NULL;
 437 #ifndef DISABLE_PRDR
 438 uschar *acl_smtp_data_prdr     = US"accept";
 439 #endif
 440 #ifndef DISABLE_DKIM
 441 uschar *acl_smtp_dkim          = NULL;
 442 #endif
 443 uschar *acl_smtp_etrn          = NULL;
 444 uschar *acl_smtp_expn          = NULL;
 445 uschar *acl_smtp_helo          = NULL;
 446 uschar *acl_smtp_mail          = NULL;
 447 uschar *acl_smtp_mailauth      = NULL;
 448 #ifdef WITH_CONTENT_SCAN
 449 uschar *acl_smtp_mime          = NULL;
 450 #endif
 451 uschar *acl_smtp_notquit       = NULL;
 452 uschar *acl_smtp_predata       = NULL;
 453 uschar *acl_smtp_quit          = NULL;
 454 uschar *acl_smtp_rcpt          = NULL;
 455 uschar *acl_smtp_starttls      = NULL;
 456 uschar *acl_smtp_vrfy          = NULL;
 457
 458 tree_node *acl_var_c           = NULL;
 459 tree_node *acl_var_m           = NULL;
 460 uschar *acl_verify_message     = NULL;
 461 string_item *acl_warn_logged   = NULL;
 462
 463 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 464 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 465
 466 uschar *acl_wherenames[]       = { US"RCPT",
 467                                    US"MAIL",
 468                                    US"PREDATA",
 469                                    US"MIME",
 470                                    US"DKIM",
 471                                    US"DATA",
 472 #ifndef DISABLE_PRDR
 473                                    US"PRDR",
 474 #endif
 475                                    US"non-SMTP",
 476                                    US"AUTH",
 477                                    US"connection",
 478                                    US"ETRN",
 479                                    US"EXPN",
 480                                    US"EHLO or HELO",
 481                                    US"MAILAUTH",
 482                                    US"non-SMTP-start",
 483                                    US"NOTQUIT",
 484                                    US"QUIT",
 485                                    US"STARTTLS",
 486                                    US"VRFY",
 487                                    US"delivery",
 488                                    US"unknown"
 489                                  };
 490
 491 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 492                                    US"550",     /* MAIL */
 493                                    US"550",     /* PREDATA */
 494                                    US"550",     /* MIME */
 495                                    US"550",     /* DKIM */
 496                                    US"550",     /* DATA */
 497 #ifndef DISABLE_PRDR
 498                                    US"550",    /* RCPT PRDR */
 499 #endif
 500                                    US"0",       /* not SMTP; not relevant */
 501                                    US"503",     /* AUTH */
 502                                    US"550",     /* connect */
 503                                    US"458",     /* ETRN */
 504                                    US"550",     /* EXPN */
 505                                    US"550",     /* HELO/EHLO */
 506                                    US"0",       /* MAILAUTH; not relevant */
 507                                    US"0",       /* not SMTP; not relevant */
 508                                    US"0",       /* NOTQUIT; not relevant */
 509                                    US"0",       /* QUIT; not relevant */
 510                                    US"550",     /* STARTTLS */
 511                                    US"252",     /* VRFY */
 512                                    US"0",       /* delivery; not relevant */
 513                                    US"0"        /* unknown; not relevant */
 514                                  };
 515
 516 uschar *add_environment        = NULL;
 517 address_item  *addr_duplicate  = NULL;
 518
 519 address_item address_defaults = {
 520   .next =               NULL,
 521   .parent =             NULL,
 522   .first =              NULL,
 523   .dupof =              NULL,
 524   .start_router =       NULL,
 525   .router =             NULL,
 526   .transport =          NULL,
 527   .host_list =          NULL,
 528   .host_used =          NULL,
 529   .fallback_hosts =     NULL,
 530   .reply =              NULL,
 531   .retries =            NULL,
 532   .address =            NULL,
 533   .unique =             NULL,
 534   .cc_local_part =      NULL,
 535   .lc_local_part =      NULL,
 536   .local_part =         NULL,
 537   .prefix =             NULL,
 538   .suffix =             NULL,
 539   .domain =             NULL,
 540   .address_retry_key =  NULL,
 541   .domain_retry_key =   NULL,
 542   .current_dir =        NULL,
 543   .home_dir =           NULL,
 544   .message =            NULL,
 545   .user_message =       NULL,
 546   .onetime_parent =     NULL,
 547   .pipe_expandn =       NULL,
 548   .return_filename =    NULL,
 549   .self_hostname =      NULL,
 550   .shadow_message =     NULL,
 551 #ifdef SUPPORT_TLS
 552   .cipher =             NULL,
 553   .ourcert =            NULL,
 554   .peercert =           NULL,
 555   .peerdn =             NULL,
 556   .ocsp =               OCSP_NOT_REQ,
 557 #endif
 558 #ifdef EXPERIMENTAL_DSN_INFO
 559   .smtp_greeting =      NULL,
 560   .helo_response =      NULL,
 561 #endif
 562   .authenticator =      NULL,
 563   .auth_id =            NULL,
 564   .auth_sndr =          NULL,
 565   .dsn_orcpt =          NULL,
 566   .dsn_flags =          0,
 567   .dsn_aware =          0,
 568   .uid =                (uid_t)(-1),
 569   .gid =                (gid_t)(-1),
 570   .flags =              { 0 },
 571   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 572   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 573   .mode =               -1,
 574   .more_errno =         0,
 575   .delivery_usec =      0,
 576   .basic_errno =        ERRNO_UNKNOWNERROR,
 577   .child_count =        0,
 578   .return_file =        -1,
 579   .special_action =     SPECIAL_NONE,
 580   .transport_return =   DEFER,
 581   .prop = {                                     /* fields that are propagated to children */
 582     .address_data =     NULL,
 583     .domain_data =      NULL,
 584     .localpart_data =   NULL,
 585     .errors_address =   NULL,
 586     .extra_headers =    NULL,
 587     .remove_headers =   NULL,
 588 #ifdef EXPERIMENTAL_SRS
 589     .srs_sender =       NULL,
 590 #endif
 591     .ignore_error =     FALSE,
 592 #ifdef SUPPORT_I18N
 593     .utf8_msg =         FALSE,
 594     .utf8_downcvt =     FALSE,
 595     .utf8_downcvt_maybe = FALSE
 596 #endif
 597   }
 598 };
 599
 600 uschar *address_file           = NULL;
 601 uschar *address_pipe           = NULL;
 602 tree_node *addresslist_anchor  = NULL;
 603 int     addresslist_count      = 0;
 604 gid_t  *admin_groups           = NULL;
 605
 606 #ifdef EXPERIMENTAL_ARC
 607 struct arc_set *arc_received    = NULL;
 608 int     arc_received_instance   = 0;
 609 int     arc_oldest_pass         = 0;
 610 const uschar *arc_state         = NULL;
 611 const uschar *arc_state_reason  = NULL;
 612 #endif
 613
 614 uschar *authenticated_fail_id  = NULL;
 615 uschar *authenticated_id       = NULL;
 616 uschar *authenticated_sender   = NULL;
 617 auth_instance  *auths          = NULL;
 618 uschar *auth_advertise_hosts   = US"*";
 619 auth_instance auth_defaults    = {
 620     .next =             NULL,
 621     .name =             NULL,
 622     .info =             NULL,
 623     .options_block =    NULL,
 624     .driver_name =      NULL,
 625     .advertise_condition = NULL,
 626     .client_condition = NULL,
 627     .public_name =      NULL,
 628     .set_id =           NULL,
 629     .set_client_id =    NULL,
 630     .mail_auth_condition = NULL,
 631     .server_debug_string = NULL,
 632     .server_condition = NULL,
 633     .client =           FALSE,
 634     .server =           FALSE,
 635     .advertised =       FALSE
 636 };
 637
 638 uschar *auth_defer_msg         = US"reason not recorded";
 639 uschar *auth_defer_user_msg    = US"";
 640 uschar *auth_vars[AUTH_VARS];
 641 int     auto_thaw              = 0;
 642 #ifdef WITH_CONTENT_SCAN
 643 int     av_failed              = FALSE; /* boolean but accessed as vtype_int*/
 644 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 645 #endif
 646
 647 #if BASE_62 == 62
 648 uschar *base62_chars=
 649     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 650 #else
 651 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 652 #endif
 653
 654 uschar *bi_command             = NULL;
 655 uschar *big_buffer             = NULL;
 656 int     big_buffer_size        = BIG_BUFFER_SIZE;
 657 #ifdef EXPERIMENTAL_BRIGHTMAIL
 658 uschar *bmi_alt_location       = NULL;
 659 uschar *bmi_base64_tracker_verdict = NULL;
 660 uschar *bmi_base64_verdict     = NULL;
 661 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 662 int     bmi_deliver            = 1;
 663 int     bmi_run                = 0;
 664 uschar *bmi_verdicts           = NULL;
 665 #endif
 666 int     bsmtp_transaction_linecount = 0;
 667 int     body_8bitmime          = 0;
 668 int     body_linecount         = 0;
 669 int     body_zerocount         = 0;
 670 uschar *bounce_message_file    = NULL;
 671 uschar *bounce_message_text    = NULL;
 672 uschar *bounce_recipient       = NULL;
 673 int     bounce_return_linesize_limit = 998;
 674 int     bounce_return_size_limit = 100*1024;
 675 uschar *bounce_sender_authentication = NULL;
 676
 677 uschar *callout_address        = NULL;
 678 int     callout_cache_domain_positive_expire = 7*24*60*60;
 679 int     callout_cache_domain_negative_expire = 3*60*60;
 680 int     callout_cache_positive_expire = 24*60*60;
 681 int     callout_cache_negative_expire = 2*60*60;
 682 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 683 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 684 int     check_log_inodes       = 100;
 685 int_eximarith_t check_log_space = 10*1024;      /* 10K Kbyte == 10MB */
 686 int     check_spool_inodes     = 100;
 687 int_eximarith_t check_spool_space = 10*1024;    /* 10K Kbyte == 10MB */
 688
 689 uschar *chunking_advertise_hosts = US"*";
 690 unsigned chunking_datasize     = 0;
 691 unsigned chunking_data_left    = 0;
 692 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 693 const pcre *regex_CHUNKING     = NULL;
 694
 695 uschar *client_authenticator   = NULL;
 696 uschar *client_authenticated_id = NULL;
 697 uschar *client_authenticated_sender = NULL;
 698 int     clmacro_count          = 0;
 699 uschar *clmacros[MAX_CLMACROS];
 700 FILE   *config_file            = NULL;
 701 const uschar *config_filename  = NULL;
 702 int     config_lineno          = 0;
 703 #ifdef CONFIGURE_GROUP
 704 gid_t   config_gid             = CONFIGURE_GROUP;
 705 #else
 706 gid_t   config_gid             = 0;
 707 #endif
 708 uschar *config_main_filelist   = US CONFIGURE_FILE
 709                          "\0<-----------Space to patch configure_filename->";
 710 uschar *config_main_filename   = NULL;
 711 uschar *config_main_directory  = NULL;
 712
 713 #ifdef CONFIGURE_OWNER
 714 uid_t   config_uid             = CONFIGURE_OWNER;
 715 #else
 716 uid_t   config_uid             = 0;
 717 #endif
 718
 719 int     connection_max_messages= -1;
 720 uschar *continue_proxy_cipher  = NULL;
 721 uschar *continue_hostname      = NULL;
 722 uschar *continue_host_address  = NULL;
 723 int     continue_sequence      = 1;
 724 uschar *continue_transport     = NULL;
 725
 726 uschar *csa_status             = NULL;
 727 cut_t   cutthrough = {
 728   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 729   .delivery =           FALSE,                          /* when to attempt */
 730   .defer_pass =         FALSE,                          /* on defer: spool locally */
 731   .is_tls =             FALSE,                          /* not a TLS conn yet */
 732   .cctx =               {.sock = -1},                   /* open connection */
 733   .nrcpt =              0,                              /* number of addresses */
 734 };
 735
 736 uschar *daemon_smtp_port       = US"smtp";
 737 int     daemon_startup_retries = 9;
 738 int     daemon_startup_sleep   = 30;
 739
 740 #ifdef EXPERIMENTAL_DCC
 741 uschar *dcc_header             = NULL;
 742 uschar *dcc_result             = NULL;
 743 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 744 uschar *dccifd_options         = US"header";
 745 #endif
 746
 747 int     debug_fd               = -1;
 748 FILE   *debug_file             = NULL;
 749 int     debug_notall[]         = {
 750   Di_memory,
 751   Di_noutf8,
 752   -1
 753 };
 754 bit_table debug_options[]      = { /* must be in alphabetical order and use
 755                                  only the enum values from macro.h */
 756   BIT_TABLE(D, acl),
 757   BIT_TABLE(D, all),
 758   BIT_TABLE(D, auth),
 759   BIT_TABLE(D, deliver),
 760   BIT_TABLE(D, dns),
 761   BIT_TABLE(D, dnsbl),
 762   BIT_TABLE(D, exec),
 763   BIT_TABLE(D, expand),
 764   BIT_TABLE(D, filter),
 765   BIT_TABLE(D, hints_lookup),
 766   BIT_TABLE(D, host_lookup),
 767   BIT_TABLE(D, ident),
 768   BIT_TABLE(D, interface),
 769   BIT_TABLE(D, lists),
 770   BIT_TABLE(D, load),
 771   BIT_TABLE(D, local_scan),
 772   BIT_TABLE(D, lookup),
 773   BIT_TABLE(D, memory),
 774   BIT_TABLE(D, noutf8),
 775   BIT_TABLE(D, pid),
 776   BIT_TABLE(D, process_info),
 777   BIT_TABLE(D, queue_run),
 778   BIT_TABLE(D, receive),
 779   BIT_TABLE(D, resolver),
 780   BIT_TABLE(D, retry),
 781   BIT_TABLE(D, rewrite),
 782   BIT_TABLE(D, route),
 783   BIT_TABLE(D, timestamp),
 784   BIT_TABLE(D, tls),
 785   BIT_TABLE(D, transport),
 786   BIT_TABLE(D, uid),
 787   BIT_TABLE(D, verify),
 788 };
 789 int     debug_options_count    = nelem(debug_options);
 790
 791 unsigned int debug_selector    = 0;
 792 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 793 uschar *delay_warning_condition=
 794   US"${if or {"
 795             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 796             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 797             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 798             "} {no}{yes}}";
 799 uschar *deliver_address_data   = NULL;
 800 int     deliver_datafile       = -1;
 801 const uschar *deliver_domain   = NULL;
 802 uschar *deliver_domain_data    = NULL;
 803 const uschar *deliver_domain_orig = NULL;
 804 const uschar *deliver_domain_parent = NULL;
 805 time_t  deliver_frozen_at      = 0;
 806 uschar *deliver_home           = NULL;
 807 const uschar *deliver_host     = NULL;
 808 const uschar *deliver_host_address = NULL;
 809 int     deliver_host_port      = 0;
 810 uschar *deliver_in_buffer      = NULL;
 811 ino_t   deliver_inode          = 0;
 812 uschar *deliver_localpart      = NULL;
 813 uschar *deliver_localpart_data = NULL;
 814 uschar *deliver_localpart_orig = NULL;
 815 uschar *deliver_localpart_parent = NULL;
 816 uschar *deliver_localpart_prefix = NULL;
 817 uschar *deliver_localpart_suffix = NULL;
 818 uschar *deliver_out_buffer     = NULL;
 819 int     deliver_queue_load_max = -1;
 820 address_item  *deliver_recipients = NULL;
 821 uschar *deliver_selectstring   = NULL;
 822 uschar *deliver_selectstring_sender = NULL;
 823
 824 #ifndef DISABLE_DKIM
 825 unsigned dkim_collect_input      = 0;
 826 uschar *dkim_cur_signer          = NULL;
 827 int     dkim_key_length          = 0;
 828 void   *dkim_signatures          = NULL;
 829 uschar *dkim_signers             = NULL;
 830 uschar *dkim_signing_domain      = NULL;
 831 uschar *dkim_signing_selector    = NULL;
 832 uschar *dkim_verify_overall      = NULL;
 833 uschar *dkim_verify_signers      = US"$dkim_signers";
 834 uschar *dkim_verify_status       = NULL;
 835 uschar *dkim_verify_reason       = NULL;
 836 #endif
 837 #ifdef EXPERIMENTAL_DMARC
 838 uschar *dmarc_domain_policy     = NULL;
 839 uschar *dmarc_forensic_sender   = NULL;
 840 uschar *dmarc_history_file      = NULL;
 841 uschar *dmarc_status            = NULL;
 842 uschar *dmarc_status_text       = NULL;
 843 uschar *dmarc_tld_file          = US DMARC_TLD_FILE;
 844 uschar *dmarc_used_domain       = NULL;
 845 #endif
 846
 847 uschar *dns_again_means_nonexist = NULL;
 848 int     dns_csa_search_limit   = 5;
 849 int     dns_cname_loops        = 1;
 850 #ifdef SUPPORT_DANE
 851 int     dns_dane_ok            = -1;
 852 #endif
 853 uschar *dns_ipv4_lookup        = NULL;
 854 int     dns_retrans            = 0;
 855 int     dns_retry              = 0;
 856 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 857 uschar *dns_trust_aa           = NULL;
 858 int     dns_use_edns0          = -1; /* <0 = not coerced */
 859 uschar *dnslist_domain         = NULL;
 860 uschar *dnslist_matched        = NULL;
 861 uschar *dnslist_text           = NULL;
 862 uschar *dnslist_value          = NULL;
 863 tree_node *domainlist_anchor   = NULL;
 864 int     domainlist_count       = 0;
 865 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 866
 867 int     errno_quota            = ERRNO_QUOTA;
 868 uschar *errors_copy            = NULL;
 869 int     error_handling         = ERRORS_SENDER;
 870 uschar *errors_reply_to        = NULL;
 871 int     errors_sender_rc       = EXIT_FAILURE;
 872 #ifndef DISABLE_EVENT
 873 uschar *event_action             = NULL;        /* expansion for delivery events */
 874 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 875 int     event_defer_errno        = 0;
 876 const uschar *event_name         = NULL;        /* event name variable */
 877 #endif
 878
 879
 880 gid_t   exim_gid               = EXIM_GID;
 881 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 882                         "\0<---------------Space to patch exim_path->";
 883 uid_t   exim_uid               = EXIM_UID;
 884 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 885 int     expand_forbid          = 0;
 886 int     expand_nlength[EXPAND_MAXN+1];
 887 int     expand_nmax            = -1;
 888 uschar *expand_nstring[EXPAND_MAXN+1];
 889 uschar *expand_string_message;
 890 uschar *extra_local_interfaces = NULL;
 891
 892 int     fake_response          = OK;
 893 uschar *fake_response_text     = US"Your message has been rejected but is "
 894                                    "being kept for evaluation.\nIf it was a "
 895                                    "legitimate message, it may still be "
 896                                    "delivered to the target recipient(s).";
 897 int     filter_n[FILTER_VARIABLE_COUNT];
 898 int     filter_sn[FILTER_VARIABLE_COUNT];
 899 int     filter_test            = FTEST_NONE;
 900 uschar *filter_test_sfile      = NULL;
 901 uschar *filter_test_ufile      = NULL;
 902 uschar *filter_thisaddress     = NULL;
 903 int     finduser_retries       = 0;
 904 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 905 uschar *freeze_tell            = NULL;
 906 uschar *freeze_tell_config     = NULL;
 907 uschar *fudged_queue_times     = US"";
 908
 909 uschar *gecos_name             = NULL;
 910 uschar *gecos_pattern          = NULL;
 911 rewrite_rule  *global_rewrite_rules = NULL;
 912
 913 volatile sig_atomic_t had_command_timeout = 0;
 914 volatile sig_atomic_t had_command_sigterm = 0;
 915 volatile sig_atomic_t had_data_timeout    = 0;
 916 volatile sig_atomic_t had_data_sigint     = 0;
 917 uschar *headers_charset        = US HEADERS_CHARSET;
 918 int     header_insert_maxlen   = 64 * 1024;
 919 header_line  *header_last      = NULL;
 920 header_line  *header_list      = NULL;
 921 int     header_maxsize         = HEADER_MAXSIZE;
 922 int     header_line_maxsize    = 0;
 923
 924 header_name header_names[] = {
 925   /* name               len     allow_resent    htype */
 926   { US"bcc",            3,      TRUE,           htype_bcc },
 927   { US"cc",             2,      TRUE,           htype_cc },
 928   { US"date",           4,      TRUE,           htype_date },
 929   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 930   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 931   { US"from",           4,      TRUE,           htype_from },
 932   { US"message-id",    10,      TRUE,           htype_id },
 933   { US"received",       8,      FALSE,          htype_received },
 934   { US"reply-to",       8,      FALSE,          htype_reply_to },
 935   { US"return-path",   11,      FALSE,          htype_return_path },
 936   { US"sender",         6,      TRUE,           htype_sender },
 937   { US"subject",        7,      FALSE,          htype_subject },
 938   { US"to",             2,      TRUE,           htype_to }
 939 };
 940
 941 int header_names_size          = nelem(header_names);
 942
 943 uschar *helo_accept_junk_hosts = NULL;
 944 uschar *helo_allow_chars       = US"";
 945 uschar *helo_lookup_domains    = US"@ : @[]";
 946 uschar *helo_try_verify_hosts  = NULL;
 947 uschar *helo_verify_hosts      = NULL;
 948 const uschar *hex_digits       = CUS"0123456789abcdef";
 949 uschar *hold_domains           = NULL;
 950 uschar *host_data              = NULL;
 951 uschar *host_lookup            = NULL;
 952 uschar *host_lookup_order      = US"bydns:byaddr";
 953 uschar *host_lookup_msg        = US"";
 954 int     host_number            = 0;
 955 uschar *host_number_string     = NULL;
 956 uschar *host_reject_connection = NULL;
 957 tree_node *hostlist_anchor     = NULL;
 958 int     hostlist_count         = 0;
 959 uschar *hosts_treat_as_local   = NULL;
 960 uschar *hosts_connection_nolog = NULL;
 961
 962 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 963 uschar *ignore_fromline_hosts  = NULL;
 964 int     inetd_wait_timeout     = -1;
 965 uschar *initial_cwd            = NULL;
 966 uschar *interface_address      = NULL;
 967 int     interface_port         = -1;
 968 uschar *iterate_item           = NULL;
 969
 970 int     journal_fd             = -1;
 971
 972 uschar *keep_environment       = NULL;
 973
 974 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 975
 976 uschar *eldap_dn               = NULL;
 977 int     load_average           = -2;
 978 uschar *local_from_prefix      = NULL;
 979 uschar *local_from_suffix      = NULL;
 980
 981 #if HAVE_IPV6
 982 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 983 #else
 984 uschar *local_interfaces       = US"0.0.0.0";
 985 #endif
 986
 987 #ifdef HAVE_LOCAL_SCAN
 988 uschar *local_scan_data        = NULL;
 989 int     local_scan_timeout     = 5*60;
 990 #endif
 991 gid_t   local_user_gid         = (gid_t)(-1);
 992 uid_t   local_user_uid         = (uid_t)(-1);
 993
 994 tree_node *localpartlist_anchor= NULL;
 995 int     localpartlist_count    = 0;
 996 uschar *log_buffer             = NULL;
 997
 998 int     log_default[]          = { /* for initializing log_selector */
 999   Li_acl_warn_skipped,
1000   Li_connection_reject,
1001   Li_delay_delivery,
1002   Li_dkim,
1003   Li_dnslist_defer,
1004   Li_etrn,
1005   Li_host_lookup_failed,
1006   Li_lost_incoming_connection,
1007   Li_outgoing_interface, /* see d_log_interface in deliver.c */
1008   Li_msg_id,
1009   Li_queue_run,
1010   Li_rejected_header,
1011   Li_retry_defer,
1012   Li_sender_verify_fail,
1013   Li_size_reject,
1014   Li_skip_delivery,
1015   Li_smtp_confirmation,
1016   Li_tls_certificate_verified,
1017   Li_tls_cipher,
1018   -1
1019 };
1020
1021 uschar *log_file_path          = US LOG_FILE_PATH
1022                            "\0<--------------Space to patch log_file_path->";
1023
1024 int     log_notall[]           = {
1025   -1
1026 };
1027 bit_table log_options[]        = { /* must be in alphabetical order,
1028                                 with definitions from enum logbit. */
1029   BIT_TABLE(L, 8bitmime),
1030   BIT_TABLE(L, acl_warn_skipped),
1031   BIT_TABLE(L, address_rewrite),
1032   BIT_TABLE(L, all),
1033   BIT_TABLE(L, all_parents),
1034   BIT_TABLE(L, arguments),
1035   BIT_TABLE(L, connection_reject),
1036   BIT_TABLE(L, delay_delivery),
1037   BIT_TABLE(L, deliver_time),
1038   BIT_TABLE(L, delivery_size),
1039 #ifndef DISABLE_DKIM
1040   BIT_TABLE(L, dkim),
1041   BIT_TABLE(L, dkim_verbose),
1042 #endif
1043   BIT_TABLE(L, dnslist_defer),
1044   BIT_TABLE(L, dnssec),
1045   BIT_TABLE(L, etrn),
1046   BIT_TABLE(L, host_lookup_failed),
1047   BIT_TABLE(L, ident_timeout),
1048   BIT_TABLE(L, incoming_interface),
1049   BIT_TABLE(L, incoming_port),
1050   BIT_TABLE(L, lost_incoming_connection),
1051   BIT_TABLE(L, millisec),
1052   BIT_TABLE(L, msg_id),
1053   BIT_TABLE(L, msg_id_created),
1054   BIT_TABLE(L, outgoing_interface),
1055   BIT_TABLE(L, outgoing_port),
1056   BIT_TABLE(L, pid),
1057   BIT_TABLE(L, pipelining),
1058 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1059   BIT_TABLE(L, proxy),
1060 #endif
1061   BIT_TABLE(L, queue_run),
1062   BIT_TABLE(L, queue_time),
1063   BIT_TABLE(L, queue_time_overall),
1064   BIT_TABLE(L, receive_time),
1065   BIT_TABLE(L, received_recipients),
1066   BIT_TABLE(L, received_sender),
1067   BIT_TABLE(L, rejected_header),
1068   { US"rejected_headers", Li_rejected_header },
1069   BIT_TABLE(L, retry_defer),
1070   BIT_TABLE(L, return_path_on_delivery),
1071   BIT_TABLE(L, sender_on_delivery),
1072   BIT_TABLE(L, sender_verify_fail),
1073   BIT_TABLE(L, size_reject),
1074   BIT_TABLE(L, skip_delivery),
1075   BIT_TABLE(L, smtp_confirmation),
1076   BIT_TABLE(L, smtp_connection),
1077   BIT_TABLE(L, smtp_incomplete_transaction),
1078   BIT_TABLE(L, smtp_mailauth),
1079   BIT_TABLE(L, smtp_no_mail),
1080   BIT_TABLE(L, smtp_protocol_error),
1081   BIT_TABLE(L, smtp_syntax_error),
1082   BIT_TABLE(L, subject),
1083   BIT_TABLE(L, tls_certificate_verified),
1084   BIT_TABLE(L, tls_cipher),
1085   BIT_TABLE(L, tls_peerdn),
1086   BIT_TABLE(L, tls_resumption),
1087   BIT_TABLE(L, tls_sni),
1088   BIT_TABLE(L, unknown_in_list),
1089 };
1090 int     log_options_count      = nelem(log_options);
1091
1092 int     log_reject_target      = 0;
1093 unsigned int log_selector[log_selector_size]; /* initialized in main() */
1094 uschar *log_selector_string    = NULL;
1095 FILE   *log_stderr             = NULL;
1096 uschar *login_sender_address   = NULL;
1097 uschar *lookup_dnssec_authenticated = NULL;
1098 int     lookup_open_max        = 25;
1099 uschar *lookup_value           = NULL;
1100
1101 macro_item *macros_user        = NULL;
1102 uschar *mailstore_basename     = NULL;
1103 #ifdef WITH_CONTENT_SCAN
1104 uschar *malware_name           = NULL;  /* Virus Name */
1105 #endif
1106 int     max_received_linelength= 0;
1107 int     max_username_length    = 0;
1108 int     message_age            = 0;
1109 uschar *message_body           = NULL;
1110 uschar *message_body_end       = NULL;
1111 int     message_body_size      = 0;
1112 int     message_body_visible   = 500;
1113 int     message_ended          = END_NOTSTARTED;
1114 uschar *message_headers        = NULL;
1115 uschar *message_id;
1116 uschar *message_id_domain      = NULL;
1117 uschar *message_id_text        = NULL;
1118 struct timeval message_id_tv   = { 0, 0 };
1119 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
1120 uschar *message_id_external;
1121 int     message_linecount      = 0;
1122 int     message_size           = 0;
1123 uschar *message_size_limit     = US"50M";
1124 #ifdef SUPPORT_I18N
1125 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
1126 #endif
1127 uschar  message_subdir[2]      = { 0, 0 };
1128 uschar *message_reference      = NULL;
1129
1130 /* MIME ACL expandables */
1131 #ifdef WITH_CONTENT_SCAN
1132 int     mime_anomaly_level     = 0;
1133 const uschar *mime_anomaly_text      = NULL;
1134 uschar *mime_boundary          = NULL;
1135 uschar *mime_charset           = NULL;
1136 uschar *mime_content_description = NULL;
1137 uschar *mime_content_disposition = NULL;
1138 uschar *mime_content_id        = NULL;
1139 unsigned int mime_content_size = 0;
1140 uschar *mime_content_transfer_encoding = NULL;
1141 uschar *mime_content_type      = NULL;
1142 uschar *mime_decoded_filename  = NULL;
1143 uschar *mime_filename          = NULL;
1144 int     mime_is_multipart      = 0;
1145 int     mime_is_coverletter    = 0;
1146 int     mime_is_rfc822         = 0;
1147 int     mime_part_count        = -1;
1148 #endif
1149
1150 uid_t  *never_users            = NULL;
1151
1152 const int on                   = 1;     /* for setsockopt */
1153 const int off                  = 0;
1154
1155 uid_t   original_euid;
1156 gid_t   originator_gid;
1157 uschar *originator_login       = NULL;
1158 uschar *originator_name        = NULL;
1159 uid_t   originator_uid;
1160 uschar *override_local_interfaces = NULL;
1161 uschar *override_pid_file_path = NULL;
1162
1163 uschar *percent_hack_domains   = NULL;
1164 uschar *pid_file_path          = US PID_FILE_PATH
1165                            "\0<--------------Space to patch pid_file_path->";
1166 #ifdef EXPERIMENTAL_PIPE_CONNECT
1167 uschar *pipe_connect_advertise_hosts = US"*";
1168 #endif
1169 uschar *pipelining_advertise_hosts = US"*";
1170 uschar *primary_hostname       = NULL;
1171 uschar  process_info[PROCESS_INFO_SIZE];
1172 int     process_info_len       = 0;
1173 uschar *process_log_path       = NULL;
1174
1175 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1176 uschar *hosts_proxy            = NULL;
1177 uschar *proxy_external_address = NULL;
1178 int     proxy_external_port    = 0;
1179 uschar *proxy_local_address    = NULL;
1180 int     proxy_local_port       = 0;
1181 #endif
1182
1183 uschar *prvscheck_address      = NULL;
1184 uschar *prvscheck_keynum       = NULL;
1185 uschar *prvscheck_result       = NULL;
1186
1187
1188 const uschar *qualify_domain_recipient = NULL;
1189 uschar *qualify_domain_sender  = NULL;
1190 uschar *queue_domains          = NULL;
1191 int     queue_interval         = -1;
1192 uschar *queue_name             = US"";
1193 uschar *queue_only_file        = NULL;
1194 int     queue_only_load        = -1;
1195 uschar *queue_run_max          = US"5";
1196 pid_t   queue_run_pid          = (pid_t)0;
1197 int     queue_run_pipe         = -1;
1198 uschar *queue_smtp_domains     = NULL;
1199
1200 uint32_t random_seed           = 0;
1201 tree_node *ratelimiters_cmd    = NULL;
1202 tree_node *ratelimiters_conn   = NULL;
1203 tree_node *ratelimiters_mail   = NULL;
1204 uschar *raw_active_hostname    = NULL;
1205 uschar *raw_sender             = NULL;
1206 uschar **raw_recipients        = NULL;
1207 int     raw_recipients_count   = 0;
1208
1209 int     rcpt_count             = 0;
1210 int     rcpt_fail_count        = 0;
1211 int     rcpt_defer_count       = 0;
1212 gid_t   real_gid;
1213 uid_t   real_uid;
1214 int     receive_linecount      = 0;
1215 int     receive_messagecount   = 0;
1216 int     receive_timeout        = 0;
1217 int     received_count         = 0;
1218 uschar *received_for           = NULL;
1219
1220 /*  This is the default text for Received headers generated by Exim. The
1221 date  will be automatically added on the end. */
1222
1223 uschar *received_header_text   = US
1224      "Received: "
1225      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1226        "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1227          "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1228      "by $primary_hostname "
1229      "${if def:received_protocol {with $received_protocol }}"
1230 #ifdef SUPPORT_TLS
1231      "${if def:tls_in_cipher_std { tls $tls_in_cipher_std\n\t}}"
1232 #endif
1233      "(Exim $version_number)\n\t"
1234      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1235      "id $message_exim_id"
1236      "${if def:received_for {\n\tfor $received_for}}"
1237      "\0<---------------Space to patch received_header_text->";
1238
1239 int     received_headers_max   = 30;
1240 uschar *received_protocol      = NULL;
1241 struct timeval received_time   = { 0, 0 };
1242 struct timeval received_time_taken = { 0, 0 };
1243 uschar *recipient_data         = NULL;
1244 uschar *recipient_unqualified_hosts = NULL;
1245 uschar *recipient_verify_failure = NULL;
1246 int     recipients_count       = 0;
1247 recipient_item  *recipients_list = NULL;
1248 int     recipients_list_max    = 0;
1249 int     recipients_max         = 0;
1250 const pcre *regex_AUTH         = NULL;
1251 const pcre *regex_check_dns_names = NULL;
1252 const pcre *regex_From         = NULL;
1253 const pcre *regex_IGNOREQUOTA  = NULL;
1254 const pcre *regex_PIPELINING   = NULL;
1255 const pcre *regex_SIZE         = NULL;
1256 #ifdef EXPERIMENTAL_PIPE_CONNECT
1257 const pcre *regex_EARLY_PIPE   = NULL;
1258 #endif
1259 const pcre *regex_ismsgid      = NULL;
1260 const pcre *regex_smtp_code    = NULL;
1261 uschar *regex_vars[REGEX_VARS];
1262 #ifdef WHITELIST_D_MACROS
1263 const pcre *regex_whitelisted_macro = NULL;
1264 #endif
1265 #ifdef WITH_CONTENT_SCAN
1266 uschar *regex_match_string     = NULL;
1267 #endif
1268 int     remote_delivery_count  = 0;
1269 int     remote_max_parallel    = 2;
1270 uschar *remote_sort_domains    = NULL;
1271 int     retry_data_expire      = 7*24*60*60;
1272 int     retry_interval_max     = 24*60*60;
1273 int     retry_maximum_timeout  = 0;        /* set from retry config */
1274 retry_config  *retries         = NULL;
1275 uschar *return_path            = NULL;
1276 int     rewrite_existflags     = 0;
1277 uschar *rfc1413_hosts          = US"@[]";
1278 int     rfc1413_query_timeout  = 0;
1279 uid_t   root_gid               = ROOT_GID;
1280 uid_t   root_uid               = ROOT_UID;
1281
1282 router_instance  *routers  = NULL;
1283 router_instance  router_defaults = {
1284     .next =                     NULL,
1285     .name =                     NULL,
1286     .info =                     NULL,
1287     .options_block =            NULL,
1288     .driver_name =              NULL,
1289
1290     .address_data =             NULL,
1291 #ifdef EXPERIMENTAL_BRIGHTMAIL
1292     .bmi_rule =                 NULL,
1293 #endif
1294     .cannot_route_message =     NULL,
1295     .condition =                NULL,
1296     .current_directory =        NULL,
1297     .debug_string =             NULL,
1298     .domains =                  NULL,
1299     .errors_to =                NULL,
1300     .expand_gid =               NULL,
1301     .expand_uid =               NULL,
1302     .expand_more =              NULL,
1303     .expand_unseen =            NULL,
1304     .extra_headers =            NULL,
1305     .fallback_hosts =           NULL,
1306     .home_directory =           NULL,
1307     .ignore_target_hosts =      NULL,
1308     .local_parts =              NULL,
1309     .pass_router_name =         NULL,
1310     .prefix =                   NULL,
1311     .redirect_router_name =     NULL,
1312     .remove_headers =           NULL,
1313     .require_files =            NULL,
1314     .router_home_directory =    NULL,
1315     .self =                     US"freeze",
1316     .senders =                  NULL,
1317     .suffix =                   NULL,
1318     .translate_ip_address =     NULL,
1319     .transport_name =           NULL,
1320
1321     .address_test =             TRUE,
1322 #ifdef EXPERIMENTAL_BRIGHTMAIL
1323     .bmi_deliver_alternate =    FALSE,
1324     .bmi_deliver_default =      FALSE,
1325     .bmi_dont_deliver =         FALSE,
1326 #endif
1327     .expn =                     TRUE,
1328     .caseful_local_part =       FALSE,
1329     .check_local_user =         FALSE,
1330     .disable_logging =          FALSE,
1331     .fail_verify_recipient =    FALSE,
1332     .fail_verify_sender =       FALSE,
1333     .gid_set =                  FALSE,
1334     .initgroups =               FALSE,
1335     .log_as_local =             TRUE_UNSET,
1336     .more =                     TRUE,
1337     .pass_on_timeout =          FALSE,
1338     .prefix_optional =          FALSE,
1339     .repeat_use =               TRUE,
1340     .retry_use_local_part =     TRUE_UNSET,
1341     .same_domain_copy_routing = FALSE,
1342     .self_rewrite =             FALSE,
1343     .suffix_optional =          FALSE,
1344     .verify_only =              FALSE,
1345     .verify_recipient =         TRUE,
1346     .verify_sender =            TRUE,
1347     .uid_set =                  FALSE,
1348     .unseen =                   FALSE,
1349     .dsn_lasthop =              FALSE,
1350
1351     .self_code =                self_freeze,
1352     .uid =                      (uid_t)(-1),
1353     .gid =                      (gid_t)(-1),
1354
1355     .fallback_hostlist =        NULL,
1356     .transport =                NULL,
1357     .pass_router =              NULL,
1358     .redirect_router =          NULL,
1359
1360     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1361 };
1362
1363 uschar *router_name            = NULL;
1364
1365 ip_address_item *running_interfaces = NULL;
1366
1367 /* This is a weird one. The following string gets patched in the binary by the
1368 script that sets up a copy of Exim for running in the test harness. It seems
1369 that compilers are now clever, and share constant strings if they can.
1370 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1371 make use of the end of this string in order to save space. So the patching then
1372 wrecks this. We defeat this optimization by adding some additional characters
1373 onto the end of the string. */
1374
1375 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1376
1377 int     runrc                  = 0;
1378
1379 uschar *search_error_message   = NULL;
1380 uschar *self_hostname          = NULL;
1381 uschar *sender_address         = NULL;
1382 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1383 uschar *sender_address_data    = NULL;
1384 uschar *sender_address_unrewritten = NULL;
1385 uschar *sender_data            = NULL;
1386 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1387 uschar *sender_fullhost        = NULL;
1388 uschar *sender_helo_name       = NULL;
1389 uschar **sender_host_aliases   = &no_aliases;
1390 uschar *sender_host_address    = NULL;
1391 uschar *sender_host_authenticated = NULL;
1392 uschar *sender_host_auth_pubname  = NULL;
1393 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1394 uschar *sender_host_name       = NULL;
1395 int     sender_host_port       = 0;
1396 uschar *sender_ident           = NULL;
1397 uschar *sender_rate            = NULL;
1398 uschar *sender_rate_limit      = NULL;
1399 uschar *sender_rate_period     = NULL;
1400 uschar *sender_rcvhost         = NULL;
1401 uschar *sender_unqualified_hosts = NULL;
1402 uschar *sender_verify_failure = NULL;
1403 address_item *sender_verified_list  = NULL;
1404 address_item *sender_verified_failed = NULL;
1405 int     sender_verified_rc     = -1;
1406 uschar *sending_ip_address     = NULL;
1407 int     sending_port           = -1;
1408 SIGNAL_BOOL sigalrm_seen       = FALSE;
1409 const uschar *sigalarm_setter  = NULL;
1410 uschar **sighup_argv           = NULL;
1411 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1412 int     smtp_accept_count      = 0;
1413 int     smtp_accept_max        = 20;
1414 int     smtp_accept_max_nonmail= 10;
1415 uschar *smtp_accept_max_nonmail_hosts = US"*";
1416 int     smtp_accept_max_per_connection = 1000;
1417 uschar *smtp_accept_max_per_host = NULL;
1418 int     smtp_accept_queue      = 0;
1419 int     smtp_accept_queue_per_connection = 10;
1420 int     smtp_accept_reserve    = 0;
1421 uschar *smtp_active_hostname   = NULL;
1422 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1423                              "Exim $version_number $tod_full"
1424                              "\0<---------------Space to patch smtp_banner->";
1425 int     smtp_ch_index          = 0;
1426 uschar *smtp_cmd_argument      = NULL;
1427 uschar *smtp_cmd_buffer        = NULL;
1428 struct timeval smtp_connection_start  = {0,0};
1429 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1430 int     smtp_connect_backlog   = 20;
1431 double  smtp_delay_mail        = 0.0;
1432 double  smtp_delay_rcpt        = 0.0;
1433 FILE   *smtp_in                = NULL;
1434 int     smtp_load_reserve      = -1;
1435 int     smtp_mailcmd_count     = 0;
1436 FILE   *smtp_out               = NULL;
1437 uschar *smtp_etrn_command      = NULL;
1438 int     smtp_max_synprot_errors= 3;
1439 int     smtp_max_unknown_commands = 3;
1440 uschar *smtp_notquit_reason    = NULL;
1441 uschar *smtp_ratelimit_hosts   = NULL;
1442 uschar *smtp_ratelimit_mail    = NULL;
1443 uschar *smtp_ratelimit_rcpt    = NULL;
1444 uschar *smtp_read_error        = US"";
1445 int     smtp_receive_timeout   = 5*60;
1446 uschar *smtp_receive_timeout_s = NULL;
1447 uschar *smtp_reserve_hosts     = NULL;
1448 int     smtp_rlm_base          = 0;
1449 double  smtp_rlm_factor        = 0.0;
1450 int     smtp_rlm_limit         = 0;
1451 int     smtp_rlm_threshold     = INT_MAX;
1452 int     smtp_rlr_base          = 0;
1453 double  smtp_rlr_factor        = 0.0;
1454 int     smtp_rlr_limit         = 0;
1455 int     smtp_rlr_threshold     = INT_MAX;
1456 unsigned smtp_peer_options     = 0;
1457 unsigned smtp_peer_options_wrap= 0;
1458 #ifdef SUPPORT_I18N
1459 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1460 #endif
1461
1462 #ifdef WITH_CONTENT_SCAN
1463 uschar *spamd_address          = US"127.0.0.1 783";
1464 uschar *spam_bar               = NULL;
1465 uschar *spam_report            = NULL;
1466 uschar *spam_action            = NULL;
1467 uschar *spam_score             = NULL;
1468 uschar *spam_score_int         = NULL;
1469 #endif
1470 #ifdef SUPPORT_SPF
1471 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1472 uschar *spf_header_comment     = NULL;
1473 uschar *spf_received           = NULL;
1474 uschar *spf_result             = NULL;
1475 uschar *spf_smtp_comment       = NULL;
1476 #endif
1477
1478 FILE   *spool_data_file        = NULL;
1479 uschar *spool_directory        = US SPOOL_DIRECTORY
1480                            "\0<--------------Space to patch spool_directory->";
1481 #ifdef EXPERIMENTAL_SRS
1482 uschar *srs_config             = NULL;
1483 uschar *srs_db_address         = NULL;
1484 uschar *srs_db_key             = NULL;
1485 int     srs_hashlength         = 6;
1486 int     srs_hashmin            = -1;
1487 int     srs_maxage             = 31;
1488 uschar *srs_orig_recipient     = NULL;
1489 uschar *srs_orig_sender        = NULL;
1490 uschar *srs_recipient          = NULL;
1491 uschar *srs_secrets            = NULL;
1492 uschar *srs_status             = NULL;
1493 #endif
1494 int     string_datestamp_offset= -1;
1495 int     string_datestamp_length= 0;
1496 int     string_datestamp_type  = -1;
1497 uschar *submission_domain      = NULL;
1498 uschar *submission_name        = NULL;
1499 int     syslog_facility        = LOG_MAIL;
1500 uschar *syslog_processname     = US"exim";
1501 uschar *system_filter          = NULL;
1502
1503 uschar *system_filter_directory_transport = NULL;
1504 uschar *system_filter_file_transport = NULL;
1505 uschar *system_filter_pipe_transport = NULL;
1506 uschar *system_filter_reply_transport = NULL;
1507
1508 gid_t   system_filter_gid      = 0;
1509 uid_t   system_filter_uid      = (uid_t)-1;
1510
1511 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1512 tfo_state_t tcp_out_fastopen   = TFO_NOT_USED;
1513 #ifdef USE_TCP_WRAPPERS
1514 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1515 #endif
1516 int     test_harness_load_avg  = 0;
1517 int     thismessage_size_limit = 0;
1518 int     timeout_frozen_after   = 0;
1519
1520 transport_instance  *transports = NULL;
1521
1522 transport_instance  transport_defaults = {
1523     .next =                     NULL,
1524     .name =                     NULL,
1525     .info =                     NULL,
1526     .options_block =            NULL,
1527     .driver_name =              NULL,
1528     .setup =                    NULL,
1529     .batch_max =                1,
1530     .batch_id =                 NULL,
1531     .home_dir =                 NULL,
1532     .current_dir =              NULL,
1533     .expand_multi_domain =      NULL,
1534     .multi_domain =             TRUE,
1535     .overrides_hosts =          FALSE,
1536     .max_addresses =            100,
1537     .connection_max_messages =  500,
1538     .deliver_as_creator =       FALSE,
1539     .disable_logging =          FALSE,
1540     .initgroups =               FALSE,
1541     .uid_set =                  FALSE,
1542     .gid_set =                  FALSE,
1543     .uid =                      (uid_t)(-1),
1544     .gid =                      (gid_t)(-1),
1545     .expand_uid =               NULL,
1546     .expand_gid =               NULL,
1547     .warn_message =             NULL,
1548     .shadow =                   NULL,
1549     .shadow_condition =         NULL,
1550     .filter_command =           NULL,
1551     .add_headers =              NULL,
1552     .remove_headers =           NULL,
1553     .return_path =              NULL,
1554     .debug_string =             NULL,
1555     .max_parallel =             NULL,
1556     .message_size_limit =       NULL,
1557     .headers_rewrite =          NULL,
1558     .rewrite_rules =            NULL,
1559     .rewrite_existflags =       0,
1560     .filter_timeout =           300,
1561     .body_only =                FALSE,
1562     .delivery_date_add =        FALSE,
1563     .envelope_to_add =          FALSE,
1564     .headers_only =             FALSE,
1565     .rcpt_include_affixes =     FALSE,
1566     .return_path_add =          FALSE,
1567     .return_output =            FALSE,
1568     .return_fail_output =       FALSE,
1569     .log_output =               FALSE,
1570     .log_fail_output =          FALSE,
1571     .log_defer_output =         FALSE,
1572     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1573                                                  1 nor 0 so can detect unset */
1574 #ifndef DISABLE_EVENT
1575    .event_action =              NULL
1576 #endif
1577 };
1578
1579 int     transport_count;
1580 uschar *transport_name          = NULL;
1581 int     transport_newlines;
1582 const uschar **transport_filter_argv  = NULL;
1583 int     transport_filter_timeout;
1584 int     transport_write_timeout= 0;
1585
1586 tree_node  *tree_dns_fails     = NULL;
1587 tree_node  *tree_duplicates    = NULL;
1588 tree_node  *tree_nonrecipients = NULL;
1589 tree_node  *tree_unusable      = NULL;
1590
1591 gid_t  *trusted_groups         = NULL;
1592 uid_t  *trusted_users          = NULL;
1593 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1594
1595 uschar *unknown_login          = NULL;
1596 uschar *unknown_username       = NULL;
1597 uschar *untrusted_set_sender   = NULL;
1598
1599 /*  A regex for matching a "From_" line in an incoming message, in the form
1600
1601     From ph10 Fri Jan  5 12:35 GMT 1996
1602
1603 which  the "mail" commands send to the MTA (undocumented, of course), or in
1604 the  form
1605
1606     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1607
1608 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1609 Because  of variations in time formats, just match up to the minutes. That
1610 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1611 so  just require one digit for hours and minutes. The weekday is also absent
1612 in  some forms. */
1613
1614 uschar *uucp_from_pattern      = US
1615    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1616    "(?:"                                          /* Non-extracting bracket */
1617    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1618    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1619    ")"                                            /* End alternation */
1620    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1621
1622 uschar *uucp_from_sender       = US"$1";
1623
1624 uschar *verify_mode            = NULL;
1625 uschar *version_copyright      =
1626  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1627    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018";
1628 uschar *version_date           = US"?";
1629 uschar *version_cnumber        = US"????";
1630 uschar *version_string         = US"?";
1631
1632 uschar *warn_message_file      = NULL;
1633 int     warning_count          = 0;
1634 uschar *warnmsg_delay          = NULL;
1635 uschar *warnmsg_recipients     = NULL;
1636
1637
1638 /*  End of globals.c */