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. */
 102
 103 tls_support tls_in = {
 104  .active =              -1,
 105  .bits =                0,
 106  .certificate_verified = FALSE,
 107 #ifdef SUPPORT_DANE
 108  .dane_verified =       FALSE,
 109  .tlsa_usage =          0,
 110 #endif
 111  .cipher =              NULL,
 112  .on_connect =          FALSE,
 113  .on_connect_ports =    NULL,
 114  .ourcert =             NULL,
 115  .peercert =            NULL,
 116  .peerdn =              NULL,
 117  .sni =                 NULL,
 118  .ocsp =                OCSP_NOT_REQ
 119 };
 120 tls_support tls_out = {
 121  .active =              -1,
 122  .bits =                0,
 123  .certificate_verified = FALSE,
 124 #ifdef SUPPORT_DANE
 125  .dane_verified =       FALSE,
 126  .tlsa_usage =          0,
 127 #endif
 128  .cipher =              NULL,
 129  .on_connect =          FALSE,
 130  .on_connect_ports =    NULL,
 131  .ourcert =             NULL,
 132  .peercert =            NULL,
 133  .peerdn =              NULL,
 134  .sni =                 NULL,
 135  .ocsp =                OCSP_NOT_REQ
 136 };
 137
 138 uschar *dsn_envid              = NULL;
 139 int     dsn_ret                = 0;
 140 const pcre  *regex_DSN         = NULL;
 141 uschar *dsn_advertise_hosts    = NULL;
 142
 143 #ifdef SUPPORT_TLS
 144 BOOL    gnutls_compat_mode     = FALSE;
 145 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 146 uschar *openssl_options        = NULL;
 147 const pcre *regex_STARTTLS     = NULL;
 148 uschar *tls_advertise_hosts    = US"*";
 149 uschar *tls_certificate        = NULL;
 150 uschar *tls_crl                = NULL;
 151 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 152 that's the interop problem which has been observed: GnuTLS suggesting a higher
 153 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 154 int     tls_dh_max_bits        = 2236;
 155 uschar *tls_dhparam            = NULL;
 156 uschar *tls_eccurve            = US"auto";
 157 # ifndef DISABLE_OCSP
 158 uschar *tls_ocsp_file          = NULL;
 159 # endif
 160 uschar *tls_privatekey         = NULL;
 161 BOOL    tls_remember_esmtp     = FALSE;
 162 uschar *tls_require_ciphers    = NULL;
 163 uschar *tls_try_verify_hosts   = NULL;
 164 uschar *tls_verify_certificates= US"system";
 165 uschar *tls_verify_hosts       = NULL;
 166 #else   /*!SUPPORT_TLS*/
 167 uschar *tls_advertise_hosts    = NULL;
 168 #endif
 169
 170 #ifndef DISABLE_PRDR
 171 /* Per Recipient Data Response variables */
 172 BOOL    prdr_enable            = FALSE;
 173 BOOL    prdr_requested         = FALSE;
 174 const pcre *regex_PRDR         = NULL;
 175 #endif
 176
 177 #ifdef SUPPORT_I18N
 178 const pcre *regex_UTF8         = NULL;
 179 #endif
 180
 181 /* Input-reading functions for messages, so we can use special ones for
 182 incoming TCP/IP. The defaults use stdin. We never need these for any
 183 stand-alone tests. */
 184
 185 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 186 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 187 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 188 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 189 int (*receive_getc)(unsigned)  = stdin_getc;
 190 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 191 void (*receive_get_cache)(void)= NULL;
 192 int (*receive_ungetc)(int)     = stdin_ungetc;
 193 int (*receive_feof)(void)      = stdin_feof;
 194 int (*receive_ferror)(void)    = stdin_ferror;
 195 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 196 #endif
 197
 198
 199 /* List of per-address expansion variables for clearing and saving/restoring
 200 when verifying one address while routing/verifying another. We have to have
 201 the size explicit, because it is referenced from more than one module. */
 202
 203 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 204   CUSS &deliver_address_data,
 205   CUSS &deliver_domain,
 206   CUSS &deliver_domain_data,
 207   CUSS &deliver_domain_orig,
 208   CUSS &deliver_domain_parent,
 209   CUSS &deliver_localpart,
 210   CUSS &deliver_localpart_data,
 211   CUSS &deliver_localpart_orig,
 212   CUSS &deliver_localpart_parent,
 213   CUSS &deliver_localpart_prefix,
 214   CUSS &deliver_localpart_suffix,
 215   CUSS (uschar **)(&deliver_recipients),
 216   CUSS &deliver_host,
 217   CUSS &deliver_home,
 218   CUSS &address_file,
 219   CUSS &address_pipe,
 220   CUSS &self_hostname,
 221   NULL };
 222
 223 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 224
 225 /* General global variables */
 226
 227 header_line *acl_added_headers = NULL;
 228 tree_node *acl_anchor          = NULL;
 229 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 230                                   NULL, NULL, NULL, NULL};
 231 int     acl_narg               = 0;
 232
 233 int     acl_level              = 0;
 234
 235 uschar *acl_not_smtp           = NULL;
 236 #ifdef WITH_CONTENT_SCAN
 237 uschar *acl_not_smtp_mime      = NULL;
 238 #endif
 239 uschar *acl_not_smtp_start     = NULL;
 240 uschar *acl_removed_headers    = NULL;
 241 uschar *acl_smtp_auth          = NULL;
 242 uschar *acl_smtp_connect       = NULL;
 243 uschar *acl_smtp_data          = NULL;
 244 #ifndef DISABLE_PRDR
 245 uschar *acl_smtp_data_prdr     = US"accept";
 246 #endif
 247 #ifndef DISABLE_DKIM
 248 uschar *acl_smtp_dkim          = NULL;
 249 #endif
 250 uschar *acl_smtp_etrn          = NULL;
 251 uschar *acl_smtp_expn          = NULL;
 252 uschar *acl_smtp_helo          = NULL;
 253 uschar *acl_smtp_mail          = NULL;
 254 uschar *acl_smtp_mailauth      = NULL;
 255 #ifdef WITH_CONTENT_SCAN
 256 uschar *acl_smtp_mime          = NULL;
 257 #endif
 258 uschar *acl_smtp_notquit       = NULL;
 259 uschar *acl_smtp_predata       = NULL;
 260 uschar *acl_smtp_quit          = NULL;
 261 uschar *acl_smtp_rcpt          = NULL;
 262 uschar *acl_smtp_starttls      = NULL;
 263 uschar *acl_smtp_vrfy          = NULL;
 264
 265 BOOL    acl_temp_details       = FALSE;
 266 tree_node *acl_var_c           = NULL;
 267 tree_node *acl_var_m           = NULL;
 268 uschar *acl_verify_message     = NULL;
 269 string_item *acl_warn_logged   = NULL;
 270
 271 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 272 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 273
 274 uschar *acl_wherenames[]       = { US"RCPT",
 275                                    US"MAIL",
 276                                    US"PREDATA",
 277                                    US"MIME",
 278                                    US"DKIM",
 279                                    US"DATA",
 280 #ifndef DISABLE_PRDR
 281                                    US"PRDR",
 282 #endif
 283                                    US"non-SMTP",
 284                                    US"AUTH",
 285                                    US"connection",
 286                                    US"ETRN",
 287                                    US"EXPN",
 288                                    US"EHLO or HELO",
 289                                    US"MAILAUTH",
 290                                    US"non-SMTP-start",
 291                                    US"NOTQUIT",
 292                                    US"QUIT",
 293                                    US"STARTTLS",
 294                                    US"VRFY",
 295                                    US"delivery",
 296                                    US"unknown"
 297                                  };
 298
 299 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 300                                    US"550",     /* MAIL */
 301                                    US"550",     /* PREDATA */
 302                                    US"550",     /* MIME */
 303                                    US"550",     /* DKIM */
 304                                    US"550",     /* DATA */
 305 #ifndef DISABLE_PRDR
 306                                    US"550",    /* RCPT PRDR */
 307 #endif
 308                                    US"0",       /* not SMTP; not relevant */
 309                                    US"503",     /* AUTH */
 310                                    US"550",     /* connect */
 311                                    US"458",     /* ETRN */
 312                                    US"550",     /* EXPN */
 313                                    US"550",     /* HELO/EHLO */
 314                                    US"0",       /* MAILAUTH; not relevant */
 315                                    US"0",       /* not SMTP; not relevant */
 316                                    US"0",       /* NOTQUIT; not relevant */
 317                                    US"0",       /* QUIT; not relevant */
 318                                    US"550",     /* STARTTLS */
 319                                    US"252",     /* VRFY */
 320                                    US"0",       /* delivery; not relevant */
 321                                    US"0"        /* unknown; not relevant */
 322                                  };
 323
 324 BOOL    active_local_from_check = FALSE;
 325 BOOL    active_local_sender_retain = FALSE;
 326 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 327 uschar *add_environment        = NULL;
 328 address_item  *addr_duplicate  = NULL;
 329
 330 address_item address_defaults = {
 331   .next =               NULL,
 332   .parent =             NULL,
 333   .first =              NULL,
 334   .dupof =              NULL,
 335   .start_router =       NULL,
 336   .router =             NULL,
 337   .transport =          NULL,
 338   .host_list =          NULL,
 339   .host_used =          NULL,
 340   .fallback_hosts =     NULL,
 341   .reply =              NULL,
 342   .retries =            NULL,
 343   .address =            NULL,
 344   .unique =             NULL,
 345   .cc_local_part =      NULL,
 346   .lc_local_part =      NULL,
 347   .local_part =         NULL,
 348   .prefix =             NULL,
 349   .suffix =             NULL,
 350   .domain =             NULL,
 351   .address_retry_key =  NULL,
 352   .domain_retry_key =   NULL,
 353   .current_dir =        NULL,
 354   .home_dir =           NULL,
 355   .message =            NULL,
 356   .user_message =       NULL,
 357   .onetime_parent =     NULL,
 358   .pipe_expandn =       NULL,
 359   .return_filename =    NULL,
 360   .self_hostname =      NULL,
 361   .shadow_message =     NULL,
 362 #ifdef SUPPORT_TLS
 363   .cipher =             NULL,
 364   .ourcert =            NULL,
 365   .peercert =           NULL,
 366   .peerdn =             NULL,
 367   .ocsp =               OCSP_NOT_REQ,
 368 #endif
 369 #ifdef EXPERIMENTAL_DSN_INFO
 370   .smtp_greeting =      NULL,
 371   .helo_response =      NULL,
 372 #endif
 373   .authenticator =      NULL,
 374   .auth_id =            NULL,
 375   .auth_sndr =          NULL,
 376   .dsn_orcpt =          NULL,
 377   .dsn_flags =          0,
 378   .dsn_aware =          0,
 379   .uid =                (uid_t)(-1),
 380   .gid =                (gid_t)(-1),
 381   .flags =              { 0 },
 382   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 383   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 384   .mode =               -1,
 385   .more_errno =         0,
 386   .delivery_usec =      0,
 387   .basic_errno =        ERRNO_UNKNOWNERROR,
 388   .child_count =        0,
 389   .return_file =        -1,
 390   .special_action =     SPECIAL_NONE,
 391   .transport_return =   DEFER,
 392   .prop = {                                     /* fields that are propagated to children */
 393     .address_data =     NULL,
 394     .domain_data =      NULL,
 395     .localpart_data =   NULL,
 396     .errors_address =   NULL,
 397     .extra_headers =    NULL,
 398     .remove_headers =   NULL,
 399 #ifdef EXPERIMENTAL_SRS
 400     .srs_sender =       NULL,
 401 #endif
 402     .ignore_error =     FALSE,
 403 #ifdef SUPPORT_I18N
 404     .utf8_msg =         FALSE,
 405     .utf8_downcvt =     FALSE,
 406     .utf8_downcvt_maybe = FALSE
 407 #endif
 408   }
 409 };
 410
 411 uschar *address_file           = NULL;
 412 uschar *address_pipe           = NULL;
 413 BOOL    address_test_mode      = FALSE;
 414 tree_node *addresslist_anchor  = NULL;
 415 int     addresslist_count      = 0;
 416 gid_t  *admin_groups           = NULL;
 417 BOOL    admin_user             = FALSE;
 418 BOOL    allow_auth_unadvertised= FALSE;
 419 BOOL    allow_domain_literals  = FALSE;
 420 BOOL    allow_mx_to_ip         = FALSE;
 421 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 422 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 423 BOOL    allow_utf8_domains      = FALSE;
 424
 425 #ifdef EXPERIMENTAL_ARC
 426 struct arc_set *arc_received    = NULL;
 427 int     arc_received_instance   = 0;
 428 int     arc_oldest_pass         = 0;
 429 const uschar *arc_state         = NULL;
 430 const uschar *arc_state_reason  = NULL;
 431 #endif
 432
 433 uschar *authenticated_fail_id  = NULL;
 434 uschar *authenticated_id       = NULL;
 435 uschar *authenticated_sender   = NULL;
 436 BOOL    authentication_failed  = FALSE;
 437 auth_instance  *auths          = NULL;
 438 uschar *auth_advertise_hosts   = US"*";
 439 auth_instance auth_defaults    = {
 440     .next =             NULL,
 441     .name =             NULL,
 442     .info =             NULL,
 443     .options_block =    NULL,
 444     .driver_name =      NULL,
 445     .advertise_condition = NULL,
 446     .client_condition = NULL,
 447     .public_name =      NULL,
 448     .set_id =           NULL,
 449     .set_client_id =    NULL,
 450     .mail_auth_condition = NULL,
 451     .server_debug_string = NULL,
 452     .server_condition = NULL,
 453     .client =           FALSE,
 454     .server =           FALSE,
 455     .advertised =       FALSE
 456 };
 457
 458 uschar *auth_defer_msg         = US"reason not recorded";
 459 uschar *auth_defer_user_msg    = US"";
 460 uschar *auth_vars[AUTH_VARS];
 461 int     auto_thaw              = 0;
 462 #ifdef WITH_CONTENT_SCAN
 463 BOOL    av_failed              = FALSE;
 464 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 465 #endif
 466
 467 BOOL    background_daemon      = TRUE;
 468
 469 #if BASE_62 == 62
 470 uschar *base62_chars=
 471     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 472 #else
 473 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 474 #endif
 475
 476 uschar *bi_command             = NULL;
 477 uschar *big_buffer             = NULL;
 478 int     big_buffer_size        = BIG_BUFFER_SIZE;
 479 #ifdef EXPERIMENTAL_BRIGHTMAIL
 480 uschar *bmi_alt_location       = NULL;
 481 uschar *bmi_base64_tracker_verdict = NULL;
 482 uschar *bmi_base64_verdict     = NULL;
 483 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 484 int     bmi_deliver            = 1;
 485 int     bmi_run                = 0;
 486 uschar *bmi_verdicts           = NULL;
 487 #endif
 488 int     bsmtp_transaction_linecount = 0;
 489 int     body_8bitmime          = 0;
 490 int     body_linecount         = 0;
 491 int     body_zerocount         = 0;
 492 uschar *bounce_message_file    = NULL;
 493 uschar *bounce_message_text    = NULL;
 494 uschar *bounce_recipient       = NULL;
 495 BOOL    bounce_return_body     = TRUE;
 496 int     bounce_return_linesize_limit = 998;
 497 BOOL    bounce_return_message  = TRUE;
 498 int     bounce_return_size_limit = 100*1024;
 499 uschar *bounce_sender_authentication = NULL;
 500
 501 uschar *callout_address        = NULL;
 502 int     callout_cache_domain_positive_expire = 7*24*60*60;
 503 int     callout_cache_domain_negative_expire = 3*60*60;
 504 int     callout_cache_positive_expire = 24*60*60;
 505 int     callout_cache_negative_expire = 2*60*60;
 506 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 507 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 508 int     check_log_inodes       = 100;
 509 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 510 BOOL    check_rfc2047_length   = TRUE;
 511 int     check_spool_inodes     = 100;
 512 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 513
 514 uschar *chunking_advertise_hosts = US"*";
 515 unsigned chunking_datasize     = 0;
 516 unsigned chunking_data_left    = 0;
 517 BOOL    chunking_offered       = FALSE;
 518 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 519 const pcre *regex_CHUNKING     = NULL;
 520
 521 uschar *client_authenticator   = NULL;
 522 uschar *client_authenticated_id = NULL;
 523 uschar *client_authenticated_sender = NULL;
 524 int     clmacro_count          = 0;
 525 uschar *clmacros[MAX_CLMACROS];
 526 BOOL    commandline_checks_require_admin = FALSE;
 527 BOOL    config_changed         = FALSE;
 528 FILE   *config_file            = NULL;
 529 const uschar *config_filename  = NULL;
 530 int     config_lineno          = 0;
 531 #ifdef CONFIGURE_GROUP
 532 gid_t   config_gid             = CONFIGURE_GROUP;
 533 #else
 534 gid_t   config_gid             = 0;
 535 #endif
 536 uschar *config_main_filelist   = US CONFIGURE_FILE
 537                          "\0<-----------Space to patch configure_filename->";
 538 uschar *config_main_filename   = NULL;
 539 uschar *config_main_directory  = NULL;
 540
 541 #ifdef CONFIGURE_OWNER
 542 uid_t   config_uid             = CONFIGURE_OWNER;
 543 #else
 544 uid_t   config_uid             = 0;
 545 #endif
 546
 547 int     connection_max_messages= -1;
 548 uschar *continue_proxy_cipher  = NULL;
 549 uschar *continue_hostname      = NULL;
 550 uschar *continue_host_address  = NULL;
 551 BOOL    continue_more          = FALSE;
 552 int     continue_sequence      = 1;
 553 uschar *continue_transport     = NULL;
 554
 555 uschar *csa_status             = NULL;
 556 cut_t   cutthrough = {
 557   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 558   .delivery =           FALSE,                          /* when to attempt */
 559   .defer_pass =         FALSE,                          /* on defer: spool locally */
 560   .is_tls =             FALSE,                          /* not a TLS conn yet */
 561   .fd =                 -1,                             /* open connection */
 562   .nrcpt =              0,                              /* number of addresses */
 563 };
 564
 565 BOOL    daemon_listen          = FALSE;
 566 uschar *daemon_smtp_port       = US"smtp";
 567 int     daemon_startup_retries = 9;
 568 int     daemon_startup_sleep   = 30;
 569
 570 #ifdef EXPERIMENTAL_DCC
 571 BOOL    dcc_direct_add_header  = FALSE;
 572 uschar *dcc_header             = NULL;
 573 uschar *dcc_result             = NULL;
 574 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 575 uschar *dccifd_options         = US"header";
 576 #endif
 577
 578 BOOL    debug_daemon           = FALSE;
 579 int     debug_fd               = -1;
 580 FILE   *debug_file             = NULL;
 581 int     debug_notall[]         = {
 582   Di_memory,
 583   -1
 584 };
 585 bit_table debug_options[]      = { /* must be in alphabetical order */
 586   BIT_TABLE(D, acl),
 587   BIT_TABLE(D, all),
 588   BIT_TABLE(D, auth),
 589   BIT_TABLE(D, deliver),
 590   BIT_TABLE(D, dns),
 591   BIT_TABLE(D, dnsbl),
 592   BIT_TABLE(D, exec),
 593   BIT_TABLE(D, expand),
 594   BIT_TABLE(D, filter),
 595   BIT_TABLE(D, hints_lookup),
 596   BIT_TABLE(D, host_lookup),
 597   BIT_TABLE(D, ident),
 598   BIT_TABLE(D, interface),
 599   BIT_TABLE(D, lists),
 600   BIT_TABLE(D, load),
 601   BIT_TABLE(D, local_scan),
 602   BIT_TABLE(D, lookup),
 603   BIT_TABLE(D, memory),
 604   BIT_TABLE(D, pid),
 605   BIT_TABLE(D, process_info),
 606   BIT_TABLE(D, queue_run),
 607   BIT_TABLE(D, receive),
 608   BIT_TABLE(D, resolver),
 609   BIT_TABLE(D, retry),
 610   BIT_TABLE(D, rewrite),
 611   BIT_TABLE(D, route),
 612   BIT_TABLE(D, timestamp),
 613   BIT_TABLE(D, tls),
 614   BIT_TABLE(D, transport),
 615   BIT_TABLE(D, uid),
 616   BIT_TABLE(D, verify),
 617 };
 618 int     debug_options_count    = nelem(debug_options);
 619
 620 unsigned int debug_selector    = 0;
 621 BOOL    debug_store            = FALSE;
 622 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 623 uschar *delay_warning_condition=
 624   US"${if or {"
 625             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 626             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 627             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 628             "} {no}{yes}}";
 629 BOOL    delivery_date_remove   = TRUE;
 630 uschar *deliver_address_data   = NULL;
 631 int     deliver_datafile       = -1;
 632 const uschar *deliver_domain   = NULL;
 633 uschar *deliver_domain_data    = NULL;
 634 const uschar *deliver_domain_orig = NULL;
 635 const uschar *deliver_domain_parent = NULL;
 636 BOOL    deliver_drop_privilege = FALSE;
 637 BOOL    deliver_firsttime      = FALSE;
 638 BOOL    deliver_force          = FALSE;
 639 BOOL    deliver_freeze         = FALSE;
 640 time_t  deliver_frozen_at      = 0;
 641 uschar *deliver_home           = NULL;
 642 const uschar *deliver_host     = NULL;
 643 const uschar *deliver_host_address = NULL;
 644 int     deliver_host_port      = 0;
 645 uschar *deliver_in_buffer      = NULL;
 646 ino_t   deliver_inode          = 0;
 647 uschar *deliver_localpart      = NULL;
 648 uschar *deliver_localpart_data = NULL;
 649 uschar *deliver_localpart_orig = NULL;
 650 uschar *deliver_localpart_parent = NULL;
 651 uschar *deliver_localpart_prefix = NULL;
 652 uschar *deliver_localpart_suffix = NULL;
 653 BOOL    deliver_force_thaw     = FALSE;
 654 BOOL    deliver_manual_thaw    = FALSE;
 655 uschar *deliver_out_buffer     = NULL;
 656 int     deliver_queue_load_max = -1;
 657 address_item  *deliver_recipients = NULL;
 658 uschar *deliver_selectstring   = NULL;
 659 BOOL    deliver_selectstring_regex = FALSE;
 660 uschar *deliver_selectstring_sender = NULL;
 661 BOOL    deliver_selectstring_sender_regex = FALSE;
 662 BOOL    disable_callout_flush  = FALSE;
 663 BOOL    disable_delay_flush    = FALSE;
 664 #ifdef ENABLE_DISABLE_FSYNC
 665 BOOL    disable_fsync          = FALSE;
 666 #endif
 667 BOOL    disable_ipv6           = FALSE;
 668 BOOL    disable_logging        = FALSE;
 669
 670 #ifndef DISABLE_DKIM
 671 BOOL    dkim_collect_input       = FALSE;
 672 uschar *dkim_cur_signer          = NULL;
 673 BOOL    dkim_disable_verify      = FALSE;
 674 int     dkim_key_length          = 0;
 675 uschar *dkim_signers             = NULL;
 676 uschar *dkim_signing_domain      = NULL;
 677 uschar *dkim_signing_selector    = NULL;
 678 uschar *dkim_verify_overall      = NULL;
 679 uschar *dkim_verify_signers      = US"$dkim_signers";
 680 uschar *dkim_verify_status       = NULL;
 681 uschar *dkim_verify_reason       = NULL;
 682 #endif
 683 #ifdef EXPERIMENTAL_DMARC
 684 BOOL    dmarc_has_been_checked  = FALSE;
 685 uschar *dmarc_ar_header         = NULL;
 686 uschar *dmarc_domain_policy     = NULL;
 687 uschar *dmarc_forensic_sender   = NULL;
 688 uschar *dmarc_history_file      = NULL;
 689 uschar *dmarc_status            = NULL;
 690 uschar *dmarc_status_text       = NULL;
 691 uschar *dmarc_tld_file          = NULL;
 692 uschar *dmarc_used_domain       = NULL;
 693 BOOL    dmarc_disable_verify    = FALSE;
 694 BOOL    dmarc_enable_forensic   = FALSE;
 695 #endif
 696
 697 uschar *dns_again_means_nonexist = NULL;
 698 int     dns_csa_search_limit   = 5;
 699 BOOL    dns_csa_use_reverse    = TRUE;
 700 #ifdef SUPPORT_DANE
 701 int     dns_dane_ok            = -1;
 702 #endif
 703 uschar *dns_ipv4_lookup        = NULL;
 704 int     dns_retrans            = 0;
 705 int     dns_retry              = 0;
 706 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 707 uschar *dns_trust_aa           = NULL;
 708 int     dns_use_edns0          = -1; /* <0 = not coerced */
 709 uschar *dnslist_domain         = NULL;
 710 uschar *dnslist_matched        = NULL;
 711 uschar *dnslist_text           = NULL;
 712 uschar *dnslist_value          = NULL;
 713 tree_node *domainlist_anchor   = NULL;
 714 int     domainlist_count       = 0;
 715 BOOL    dont_deliver           = FALSE;
 716 BOOL    dot_ends               = TRUE;
 717 BOOL    drop_cr                = FALSE;         /* No longer used */
 718 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 719
 720 BOOL    enable_dollar_recipients = FALSE;
 721 BOOL    envelope_to_remove     = TRUE;
 722 int     errno_quota            = ERRNO_QUOTA;
 723 uschar *errors_copy            = NULL;
 724 int     error_handling         = ERRORS_SENDER;
 725 uschar *errors_reply_to        = NULL;
 726 int     errors_sender_rc       = EXIT_FAILURE;
 727 #ifndef DISABLE_EVENT
 728 uschar *event_action             = NULL;        /* expansion for delivery events */
 729 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 730 int     event_defer_errno        = 0;
 731 const uschar *event_name         = NULL;        /* event name variable */
 732 #endif
 733
 734
 735 gid_t   exim_gid               = EXIM_GID;
 736 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 737 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 738                         "\0<---------------Space to patch exim_path->";
 739 uid_t   exim_uid               = EXIM_UID;
 740 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 741 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 742 int     expand_forbid          = 0;
 743 int     expand_nlength[EXPAND_MAXN+1];
 744 int     expand_nmax            = -1;
 745 uschar *expand_nstring[EXPAND_MAXN+1];
 746 BOOL    expand_string_forcedfail = FALSE;
 747 uschar *expand_string_message;
 748 BOOL    extract_addresses_remove_arguments = TRUE;
 749 uschar *extra_local_interfaces = NULL;
 750
 751 int     fake_response          = OK;
 752 uschar *fake_response_text     = US"Your message has been rejected but is "
 753                                    "being kept for evaluation.\nIf it was a "
 754                                    "legitimate message, it may still be "
 755                                    "delivered to the target recipient(s).";
 756 int     filter_n[FILTER_VARIABLE_COUNT];
 757 BOOL    filter_running         = FALSE;
 758 int     filter_sn[FILTER_VARIABLE_COUNT];
 759 int     filter_test            = FTEST_NONE;
 760 uschar *filter_test_sfile      = NULL;
 761 uschar *filter_test_ufile      = NULL;
 762 uschar *filter_thisaddress     = NULL;
 763 int     finduser_retries       = 0;
 764 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 765 uschar *freeze_tell            = NULL;
 766 uschar *freeze_tell_config     = NULL;
 767 uschar *fudged_queue_times     = US"";
 768
 769 uschar *gecos_name             = NULL;
 770 uschar *gecos_pattern          = NULL;
 771 rewrite_rule  *global_rewrite_rules = NULL;
 772
 773 volatile sig_atomic_t had_command_timeout = 0;
 774 volatile sig_atomic_t had_command_sigterm = 0;
 775 volatile sig_atomic_t had_data_timeout    = 0;
 776 volatile sig_atomic_t had_data_sigint     = 0;
 777 uschar *headers_charset        = US HEADERS_CHARSET;
 778 int     header_insert_maxlen   = 64 * 1024;
 779 header_line  *header_last      = NULL;
 780 header_line  *header_list      = NULL;
 781 int     header_maxsize         = HEADER_MAXSIZE;
 782 int     header_line_maxsize    = 0;
 783
 784 header_name header_names[] = {
 785   /* name               len     allow_resent    htype */
 786   { US"bcc",            3,      TRUE,           htype_bcc },
 787   { US"cc",             2,      TRUE,           htype_cc },
 788   { US"date",           4,      TRUE,           htype_date },
 789   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 790   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 791   { US"from",           4,      TRUE,           htype_from },
 792   { US"message-id",    10,      TRUE,           htype_id },
 793   { US"received",       8,      FALSE,          htype_received },
 794   { US"reply-to",       8,      FALSE,          htype_reply_to },
 795   { US"return-path",   11,      FALSE,          htype_return_path },
 796   { US"sender",         6,      TRUE,           htype_sender },
 797   { US"subject",        7,      FALSE,          htype_subject },
 798   { US"to",             2,      TRUE,           htype_to }
 799 };
 800
 801 int header_names_size          = nelem(header_names);
 802
 803 BOOL    header_rewritten       = FALSE;
 804 uschar *helo_accept_junk_hosts = NULL;
 805 uschar *helo_allow_chars       = US"";
 806 uschar *helo_lookup_domains    = US"@ : @[]";
 807 uschar *helo_try_verify_hosts  = NULL;
 808 BOOL    helo_verified          = FALSE;
 809 BOOL    helo_verify_failed     = FALSE;
 810 uschar *helo_verify_hosts      = NULL;
 811 const uschar *hex_digits       = CUS"0123456789abcdef";
 812 uschar *hold_domains           = NULL;
 813 BOOL    host_checking          = FALSE;
 814 BOOL    host_checking_callout  = FALSE;
 815 uschar *host_data              = NULL;
 816 BOOL    host_find_failed_syntax= FALSE;
 817 uschar *host_lookup            = NULL;
 818 BOOL    host_lookup_deferred   = FALSE;
 819 BOOL    host_lookup_failed     = FALSE;
 820 uschar *host_lookup_order      = US"bydns:byaddr";
 821 uschar *host_lookup_msg        = US"";
 822 int     host_number            = 0;
 823 uschar *host_number_string     = NULL;
 824 uschar *host_reject_connection = NULL;
 825 tree_node *hostlist_anchor     = NULL;
 826 int     hostlist_count         = 0;
 827 uschar *hosts_treat_as_local   = NULL;
 828 uschar *hosts_connection_nolog = NULL;
 829
 830 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 831 BOOL    ignore_fromline_local  = FALSE;
 832 uschar *ignore_fromline_hosts  = NULL;
 833 BOOL    inetd_wait_mode        = FALSE;
 834 int     inetd_wait_timeout     = -1;
 835 uschar *initial_cwd            = NULL;
 836 uschar *interface_address      = NULL;
 837 int     interface_port         = -1;
 838 BOOL    is_inetd               = FALSE;
 839 uschar *iterate_item           = NULL;
 840
 841 int     journal_fd             = -1;
 842
 843 uschar *keep_environment       = NULL;
 844
 845 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 846
 847 uschar *eldap_dn               = NULL;
 848 int     load_average           = -2;
 849 BOOL    local_error_message    = FALSE;
 850 BOOL    local_from_check       = TRUE;
 851 uschar *local_from_prefix      = NULL;
 852 uschar *local_from_suffix      = NULL;
 853
 854 #if HAVE_IPV6
 855 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 856 #else
 857 uschar *local_interfaces       = US"0.0.0.0";
 858 #endif
 859
 860 #ifdef HAVE_LOCAL_SCAN
 861 uschar *local_scan_data        = NULL;
 862 int     local_scan_timeout     = 5*60;
 863 #endif
 864 BOOL    local_sender_retain    = FALSE;
 865 gid_t   local_user_gid         = (gid_t)(-1);
 866 uid_t   local_user_uid         = (uid_t)(-1);
 867
 868 tree_node *localpartlist_anchor= NULL;
 869 int     localpartlist_count    = 0;
 870 uschar *log_buffer             = NULL;
 871
 872 int     log_default[]          = { /* for initializing log_selector */
 873   Li_acl_warn_skipped,
 874   Li_connection_reject,
 875   Li_delay_delivery,
 876   Li_dkim,
 877   Li_dnslist_defer,
 878   Li_etrn,
 879   Li_host_lookup_failed,
 880   Li_lost_incoming_connection,
 881   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 882   Li_queue_run,
 883   Li_rejected_header,
 884   Li_retry_defer,
 885   Li_sender_verify_fail,
 886   Li_size_reject,
 887   Li_skip_delivery,
 888   Li_smtp_confirmation,
 889   Li_tls_certificate_verified,
 890   Li_tls_cipher,
 891   -1
 892 };
 893
 894 uschar *log_file_path          = US LOG_FILE_PATH
 895                            "\0<--------------Space to patch log_file_path->";
 896
 897 int     log_notall[]           = {
 898   -1
 899 };
 900 bit_table log_options[]        = { /* must be in alphabetical order */
 901   BIT_TABLE(L, 8bitmime),
 902   BIT_TABLE(L, acl_warn_skipped),
 903   BIT_TABLE(L, address_rewrite),
 904   BIT_TABLE(L, all),
 905   BIT_TABLE(L, all_parents),
 906   BIT_TABLE(L, arguments),
 907   BIT_TABLE(L, connection_reject),
 908   BIT_TABLE(L, delay_delivery),
 909   BIT_TABLE(L, deliver_time),
 910   BIT_TABLE(L, delivery_size),
 911 #ifndef DISABLE_DKIM
 912   BIT_TABLE(L, dkim),
 913   BIT_TABLE(L, dkim_verbose),
 914 #endif
 915   BIT_TABLE(L, dnslist_defer),
 916   BIT_TABLE(L, dnssec),
 917   BIT_TABLE(L, etrn),
 918   BIT_TABLE(L, host_lookup_failed),
 919   BIT_TABLE(L, ident_timeout),
 920   BIT_TABLE(L, incoming_interface),
 921   BIT_TABLE(L, incoming_port),
 922   BIT_TABLE(L, lost_incoming_connection),
 923   BIT_TABLE(L, millisec),
 924   BIT_TABLE(L, outgoing_interface),
 925   BIT_TABLE(L, outgoing_port),
 926   BIT_TABLE(L, pid),
 927 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 928   BIT_TABLE(L, proxy),
 929 #endif
 930   BIT_TABLE(L, queue_run),
 931   BIT_TABLE(L, queue_time),
 932   BIT_TABLE(L, queue_time_overall),
 933   BIT_TABLE(L, receive_time),
 934   BIT_TABLE(L, received_recipients),
 935   BIT_TABLE(L, received_sender),
 936   BIT_TABLE(L, rejected_header),
 937   { US"rejected_headers", Li_rejected_header },
 938   BIT_TABLE(L, retry_defer),
 939   BIT_TABLE(L, return_path_on_delivery),
 940   BIT_TABLE(L, sender_on_delivery),
 941   BIT_TABLE(L, sender_verify_fail),
 942   BIT_TABLE(L, size_reject),
 943   BIT_TABLE(L, skip_delivery),
 944   BIT_TABLE(L, smtp_confirmation),
 945   BIT_TABLE(L, smtp_connection),
 946   BIT_TABLE(L, smtp_incomplete_transaction),
 947   BIT_TABLE(L, smtp_mailauth),
 948   BIT_TABLE(L, smtp_no_mail),
 949   BIT_TABLE(L, smtp_protocol_error),
 950   BIT_TABLE(L, smtp_syntax_error),
 951   BIT_TABLE(L, subject),
 952   BIT_TABLE(L, tls_certificate_verified),
 953   BIT_TABLE(L, tls_cipher),
 954   BIT_TABLE(L, tls_peerdn),
 955   BIT_TABLE(L, tls_sni),
 956   BIT_TABLE(L, unknown_in_list),
 957 };
 958 int     log_options_count      = nelem(log_options);
 959
 960 int     log_reject_target      = 0;
 961 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 962 uschar *log_selector_string    = NULL;
 963 FILE   *log_stderr             = NULL;
 964 BOOL    log_testing_mode       = FALSE;
 965 BOOL    log_timezone           = FALSE;
 966 uschar *login_sender_address   = NULL;
 967 uschar *lookup_dnssec_authenticated = NULL;
 968 int     lookup_open_max        = 25;
 969 uschar *lookup_value           = NULL;
 970
 971 macro_item *macros_user        = NULL;
 972 uschar *mailstore_basename     = NULL;
 973 #ifdef WITH_CONTENT_SCAN
 974 uschar *malware_name           = NULL;  /* Virus Name */
 975 #endif
 976 int     max_received_linelength= 0;
 977 int     max_username_length    = 0;
 978 int     message_age            = 0;
 979 uschar *message_body           = NULL;
 980 uschar *message_body_end       = NULL;
 981 BOOL    message_body_newlines  = FALSE;
 982 int     message_body_size      = 0;
 983 int     message_body_visible   = 500;
 984 int     message_ended          = END_NOTSTARTED;
 985 uschar *message_headers        = NULL;
 986 uschar *message_id;
 987 uschar *message_id_domain      = NULL;
 988 uschar *message_id_text        = NULL;
 989 struct timeval message_id_tv   = { 0, 0 };
 990 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 991 uschar *message_id_external;
 992 int     message_linecount      = 0;
 993 BOOL    message_logs           = TRUE;
 994 int     message_size           = 0;
 995 uschar *message_size_limit     = US"50M";
 996 #ifdef SUPPORT_I18N
 997 BOOL    message_smtputf8       = FALSE;
 998 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 999 #endif
1000 uschar  message_subdir[2]      = { 0, 0 };
1001 uschar *message_reference      = NULL;
1002
1003 /* MIME ACL expandables */
1004 #ifdef WITH_CONTENT_SCAN
1005 int     mime_anomaly_level     = 0;
1006 const uschar *mime_anomaly_text      = NULL;
1007 uschar *mime_boundary          = NULL;
1008 uschar *mime_charset           = NULL;
1009 uschar *mime_content_description = NULL;
1010 uschar *mime_content_disposition = NULL;
1011 uschar *mime_content_id        = NULL;
1012 unsigned int mime_content_size = 0;
1013 uschar *mime_content_transfer_encoding = NULL;
1014 uschar *mime_content_type      = NULL;
1015 uschar *mime_decoded_filename  = NULL;
1016 uschar *mime_filename          = NULL;
1017 int     mime_is_multipart      = 0;
1018 int     mime_is_coverletter    = 0;
1019 int     mime_is_rfc822         = 0;
1020 int     mime_part_count        = -1;
1021 #endif
1022
1023 BOOL    mua_wrapper            = FALSE;
1024
1025 uid_t  *never_users            = NULL;
1026 #ifdef WITH_CONTENT_SCAN
1027 BOOL    no_mbox_unspool        = FALSE;
1028 #endif
1029 BOOL    no_multiline_responses = FALSE;
1030
1031 const int on                   = 1;     /* for setsockopt */
1032 const int off                  = 0;
1033
1034 uid_t   original_euid;
1035 gid_t   originator_gid;
1036 uschar *originator_login       = NULL;
1037 uschar *originator_name        = NULL;
1038 uid_t   originator_uid;
1039 uschar *override_local_interfaces = NULL;
1040 uschar *override_pid_file_path = NULL;
1041
1042 BOOL    parse_allow_group      = FALSE;
1043 BOOL    parse_found_group      = FALSE;
1044 uschar *percent_hack_domains   = NULL;
1045 uschar *pid_file_path          = US PID_FILE_PATH
1046                            "\0<--------------Space to patch pid_file_path->";
1047 BOOL    pipelining_enable      = TRUE;
1048 uschar *pipelining_advertise_hosts = US"*";
1049 BOOL    preserve_message_logs  = FALSE;
1050 uschar *primary_hostname       = NULL;
1051 BOOL    print_topbitchars      = FALSE;
1052 uschar  process_info[PROCESS_INFO_SIZE];
1053 int     process_info_len       = 0;
1054 uschar *process_log_path       = NULL;
1055 BOOL    prod_requires_admin    = TRUE;
1056
1057 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1058 uschar *hosts_proxy            = US"";
1059 uschar *proxy_external_address = US"";
1060 int     proxy_external_port    = 0;
1061 uschar *proxy_local_address    = US"";
1062 int     proxy_local_port       = 0;
1063 BOOL    proxy_session          = FALSE;
1064 BOOL    proxy_session_failed   = FALSE;
1065 #endif
1066
1067 uschar *prvscheck_address      = NULL;
1068 uschar *prvscheck_keynum       = NULL;
1069 uschar *prvscheck_result       = NULL;
1070
1071
1072 const uschar *qualify_domain_recipient = NULL;
1073 uschar *qualify_domain_sender  = NULL;
1074 BOOL    queue_2stage           = FALSE;
1075 uschar *queue_domains          = NULL;
1076 int     queue_interval         = -1;
1077 BOOL    queue_list_requires_admin = TRUE;
1078 uschar *queue_name             = US"";
1079 BOOL    queue_only             = FALSE;
1080 uschar *queue_only_file        = NULL;
1081 int     queue_only_load        = -1;
1082 BOOL    queue_only_load_latch  = TRUE;
1083 BOOL    queue_only_override    = TRUE;
1084 BOOL    queue_only_policy      = FALSE;
1085 BOOL    queue_run_first_delivery = FALSE;
1086 BOOL    queue_run_force        = FALSE;
1087 BOOL    queue_run_in_order     = FALSE;
1088 BOOL    queue_run_local        = FALSE;
1089 uschar *queue_run_max          = US"5";
1090 pid_t   queue_run_pid          = (pid_t)0;
1091 int     queue_run_pipe         = -1;
1092 BOOL    queue_running          = FALSE;
1093 BOOL    queue_smtp             = FALSE;
1094 uschar *queue_smtp_domains     = NULL;
1095
1096 unsigned int random_seed       = 0;
1097 tree_node *ratelimiters_cmd    = NULL;
1098 tree_node *ratelimiters_conn   = NULL;
1099 tree_node *ratelimiters_mail   = NULL;
1100 uschar *raw_active_hostname    = NULL;
1101 uschar *raw_sender             = NULL;
1102 uschar **raw_recipients        = NULL;
1103 int     raw_recipients_count   = 0;
1104
1105 int     rcpt_count             = 0;
1106 int     rcpt_fail_count        = 0;
1107 int     rcpt_defer_count       = 0;
1108 gid_t   real_gid;
1109 uid_t   real_uid;
1110 BOOL    really_exim            = TRUE;
1111 BOOL    receive_call_bombout   = FALSE;
1112 int     receive_linecount      = 0;
1113 int     receive_messagecount   = 0;
1114 int     receive_timeout        = 0;
1115 int     received_count         = 0;
1116 uschar *received_for           = NULL;
1117
1118 /*  This is the default text for Received headers generated by Exim. The
1119 date  will be automatically added on the end. */
1120
1121 uschar *received_header_text   = US
1122      "Received: "
1123      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1124      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1125      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1126      "by $primary_hostname "
1127      "${if def:received_protocol {with $received_protocol}} "
1128      #ifdef SUPPORT_TLS
1129      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1130      #endif
1131      "(Exim $version_number)\n\t"
1132      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1133      "id $message_exim_id"
1134      "${if def:received_for {\n\tfor $received_for}}"
1135      "\0<---------------Space to patch received_header_text->";
1136
1137 int     received_headers_max   = 30;
1138 uschar *received_protocol      = NULL;
1139 struct timeval received_time   = { 0, 0 };
1140 struct timeval received_time_taken = { 0, 0 };
1141 uschar *recipient_data         = NULL;
1142 uschar *recipient_unqualified_hosts = NULL;
1143 uschar *recipient_verify_failure = NULL;
1144 int     recipients_count       = 0;
1145 BOOL    recipients_discarded   = FALSE;
1146 recipient_item  *recipients_list = NULL;
1147 int     recipients_list_max    = 0;
1148 int     recipients_max         = 0;
1149 BOOL    recipients_max_reject  = FALSE;
1150 const pcre *regex_AUTH         = NULL;
1151 const pcre *regex_check_dns_names = NULL;
1152 const pcre *regex_From         = NULL;
1153 const pcre *regex_IGNOREQUOTA  = NULL;
1154 const pcre *regex_PIPELINING   = NULL;
1155 const pcre *regex_SIZE         = NULL;
1156 const pcre *regex_ismsgid      = NULL;
1157 const pcre *regex_smtp_code    = NULL;
1158 uschar *regex_vars[REGEX_VARS];
1159 #ifdef WHITELIST_D_MACROS
1160 const pcre *regex_whitelisted_macro = NULL;
1161 #endif
1162 #ifdef WITH_CONTENT_SCAN
1163 uschar *regex_match_string     = NULL;
1164 #endif
1165 int     remote_delivery_count  = 0;
1166 int     remote_max_parallel    = 2;
1167 uschar *remote_sort_domains    = NULL;
1168 int     retry_data_expire      = 7*24*60*60;
1169 int     retry_interval_max     = 24*60*60;
1170 int     retry_maximum_timeout  = 0;        /* set from retry config */
1171 retry_config  *retries         = NULL;
1172 uschar *return_path            = NULL;
1173 BOOL    return_path_remove     = TRUE;
1174 int     rewrite_existflags     = 0;
1175 uschar *rfc1413_hosts          = US"@[]";
1176 int     rfc1413_query_timeout  = 0;
1177 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1178 uid_t   root_gid               = ROOT_GID;
1179 uid_t   root_uid               = ROOT_UID;
1180
1181 router_instance  *routers  = NULL;
1182 router_instance  router_defaults = {
1183     .next =                     NULL,
1184     .name =                     NULL,
1185     .info =                     NULL,
1186     .options_block =            NULL,
1187     .driver_name =              NULL,
1188
1189     .address_data =             NULL,
1190 #ifdef EXPERIMENTAL_BRIGHTMAIL
1191     .bmi_rule =                 NULL,
1192 #endif
1193     .cannot_route_message =     NULL,
1194     .condition =                NULL,
1195     .current_directory =        NULL,
1196     .debug_string =             NULL,
1197     .domains =                  NULL,
1198     .errors_to =                NULL,
1199     .expand_gid =               NULL,
1200     .expand_uid =               NULL,
1201     .expand_more =              NULL,
1202     .expand_unseen =            NULL,
1203     .extra_headers =            NULL,
1204     .fallback_hosts =           NULL,
1205     .home_directory =           NULL,
1206     .ignore_target_hosts =      NULL,
1207     .local_parts =              NULL,
1208     .pass_router_name =         NULL,
1209     .prefix =                   NULL,
1210     .redirect_router_name =     NULL,
1211     .remove_headers =           NULL,
1212     .require_files =            NULL,
1213     .router_home_directory =    NULL,
1214     .self =                     US"freeze",
1215     .senders =                  NULL,
1216     .suffix =                   NULL,
1217     .translate_ip_address =     NULL,
1218     .transport_name =           NULL,
1219
1220     .address_test =             TRUE,
1221 #ifdef EXPERIMENTAL_BRIGHTMAIL
1222     .bmi_deliver_alternate =    FALSE,
1223     .bmi_deliver_default =      FALSE,
1224     .bmi_dont_deliver =         FALSE,
1225 #endif
1226     .expn =                     TRUE,
1227     .caseful_local_part =       FALSE,
1228     .check_local_user =         FALSE,
1229     .disable_logging =          FALSE,
1230     .fail_verify_recipient =    FALSE,
1231     .fail_verify_sender =       FALSE,
1232     .gid_set =                  FALSE,
1233     .initgroups =               FALSE,
1234     .log_as_local =             TRUE_UNSET,
1235     .more =                     TRUE,
1236     .pass_on_timeout =          FALSE,
1237     .prefix_optional =          FALSE,
1238     .repeat_use =               TRUE,
1239     .retry_use_local_part =     TRUE_UNSET,
1240     .same_domain_copy_routing = FALSE,
1241     .self_rewrite =             FALSE,
1242     .suffix_optional =          FALSE,
1243     .verify_only =              FALSE,
1244     .verify_recipient =         TRUE,
1245     .verify_sender =            TRUE,
1246     .uid_set =                  FALSE,
1247     .unseen =                   FALSE,
1248     .dsn_lasthop =              FALSE,
1249
1250     .self_code =                self_freeze,
1251     .uid =                      (uid_t)(-1),
1252     .gid =                      (gid_t)(-1),
1253
1254     .fallback_hostlist =        NULL,
1255     .transport =                NULL,
1256     .pass_router =              NULL,
1257     .redirect_router =          NULL,
1258
1259     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1260 };
1261
1262 uschar *router_name            = NULL;
1263
1264 ip_address_item *running_interfaces = NULL;
1265 BOOL    running_in_test_harness = FALSE;
1266
1267 /* This is a weird one. The following string gets patched in the binary by the
1268 script that sets up a copy of Exim for running in the test harness. It seems
1269 that compilers are now clever, and share constant strings if they can.
1270 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1271 make use of the end of this string in order to save space. So the patching then
1272 wrecks this. We defeat this optimization by adding some additional characters
1273 onto the end of the string. */
1274
1275 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1276
1277 int     runrc                  = 0;
1278
1279 uschar *search_error_message   = NULL;
1280 BOOL    search_find_defer      = FALSE;
1281 uschar *self_hostname          = NULL;
1282 uschar *sender_address         = NULL;
1283 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1284 uschar *sender_address_data    = NULL;
1285 BOOL    sender_address_forced  = FALSE;
1286 uschar *sender_address_unrewritten = NULL;
1287 uschar *sender_data            = NULL;
1288 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1289 uschar *sender_fullhost        = NULL;
1290 BOOL    sender_helo_dnssec     = FALSE;
1291 uschar *sender_helo_name       = NULL;
1292 uschar **sender_host_aliases   = &no_aliases;
1293 uschar *sender_host_address    = NULL;
1294 uschar *sender_host_authenticated = NULL;
1295 uschar *sender_host_auth_pubname  = NULL;
1296 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1297 BOOL    sender_host_dnssec     = FALSE;
1298 uschar *sender_host_name       = NULL;
1299 int     sender_host_port       = 0;
1300 BOOL    sender_host_notsocket  = FALSE;
1301 BOOL    sender_host_unknown    = FALSE;
1302 uschar *sender_ident           = NULL;
1303 BOOL    sender_local           = FALSE;
1304 BOOL    sender_name_forced     = FALSE;
1305 uschar *sender_rate            = NULL;
1306 uschar *sender_rate_limit      = NULL;
1307 uschar *sender_rate_period     = NULL;
1308 uschar *sender_rcvhost         = NULL;
1309 BOOL    sender_set_untrusted   = FALSE;
1310 uschar *sender_unqualified_hosts = NULL;
1311 uschar *sender_verify_failure = NULL;
1312 address_item *sender_verified_list  = NULL;
1313 address_item *sender_verified_failed = NULL;
1314 int     sender_verified_rc     = -1;
1315 BOOL    sender_verified_responded = FALSE;
1316 uschar *sending_ip_address     = NULL;
1317 int     sending_port           = -1;
1318 SIGNAL_BOOL sigalrm_seen       = FALSE;
1319 uschar **sighup_argv           = NULL;
1320 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1321 int     smtp_accept_count      = 0;
1322 BOOL    smtp_accept_keepalive  = TRUE;
1323 int     smtp_accept_max        = 20;
1324 int     smtp_accept_max_nonmail= 10;
1325 uschar *smtp_accept_max_nonmail_hosts = US"*";
1326 int     smtp_accept_max_per_connection = 1000;
1327 uschar *smtp_accept_max_per_host = NULL;
1328 int     smtp_accept_queue      = 0;
1329 int     smtp_accept_queue_per_connection = 10;
1330 int     smtp_accept_reserve    = 0;
1331 uschar *smtp_active_hostname   = NULL;
1332 BOOL    smtp_authenticated     = FALSE;
1333 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1334                              "Exim $version_number $tod_full"
1335                              "\0<---------------Space to patch smtp_banner->";
1336 BOOL    smtp_batched_input     = FALSE;
1337 BOOL    smtp_check_spool_space = TRUE;
1338 int     smtp_ch_index          = 0;
1339 uschar *smtp_cmd_argument      = NULL;
1340 uschar *smtp_cmd_buffer        = NULL;
1341 struct timeval smtp_connection_start  = {0,0};
1342 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1343 int     smtp_connect_backlog   = 20;
1344 double  smtp_delay_mail        = 0.0;
1345 double  smtp_delay_rcpt        = 0.0;
1346 BOOL    smtp_enforce_sync      = TRUE;
1347 FILE   *smtp_in                = NULL;
1348 BOOL    smtp_input             = FALSE;
1349 int     smtp_load_reserve      = -1;
1350 int     smtp_mailcmd_count     = 0;
1351 FILE   *smtp_out               = NULL;
1352 uschar *smtp_etrn_command      = NULL;
1353 BOOL    smtp_etrn_serialize    = TRUE;
1354 int     smtp_max_synprot_errors= 3;
1355 int     smtp_max_unknown_commands = 3;
1356 uschar *smtp_notquit_reason    = NULL;
1357 uschar *smtp_ratelimit_hosts   = NULL;
1358 uschar *smtp_ratelimit_mail    = NULL;
1359 uschar *smtp_ratelimit_rcpt    = NULL;
1360 uschar *smtp_read_error        = US"";
1361 int     smtp_receive_timeout   = 5*60;
1362 uschar *smtp_receive_timeout_s = NULL;
1363 uschar *smtp_reserve_hosts     = NULL;
1364 BOOL    smtp_return_error_details = FALSE;
1365 int     smtp_rlm_base          = 0;
1366 double  smtp_rlm_factor        = 0.0;
1367 int     smtp_rlm_limit         = 0;
1368 int     smtp_rlm_threshold     = INT_MAX;
1369 int     smtp_rlr_base          = 0;
1370 double  smtp_rlr_factor        = 0.0;
1371 int     smtp_rlr_limit         = 0;
1372 int     smtp_rlr_threshold     = INT_MAX;
1373 unsigned smtp_peer_options     = 0;
1374 unsigned smtp_peer_options_wrap= 0;
1375 #ifdef SUPPORT_I18N
1376 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1377 #endif
1378
1379 #ifdef WITH_CONTENT_SCAN
1380 uschar *spamd_address          = US"127.0.0.1 783";
1381 uschar *spam_bar               = NULL;
1382 uschar *spam_report            = NULL;
1383 uschar *spam_action            = NULL;
1384 uschar *spam_score             = NULL;
1385 uschar *spam_score_int         = NULL;
1386 #endif
1387 #ifdef SUPPORT_SPF
1388 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1389 uschar *spf_header_comment     = NULL;
1390 uschar *spf_received           = NULL;
1391 uschar *spf_result             = NULL;
1392 uschar *spf_smtp_comment       = NULL;
1393 #endif
1394
1395 BOOL    split_spool_directory  = FALSE;
1396 uschar *spool_directory        = US SPOOL_DIRECTORY
1397                            "\0<--------------Space to patch spool_directory->";
1398 BOOL    spool_file_wireformat  = FALSE;
1399 BOOL    spool_wireformat       = FALSE;
1400 #ifdef EXPERIMENTAL_SRS
1401 uschar *srs_config             = NULL;
1402 uschar *srs_db_address         = NULL;
1403 uschar *srs_db_key             = NULL;
1404 int     srs_hashlength         = 6;
1405 int     srs_hashmin            = -1;
1406 int     srs_maxage             = 31;
1407 uschar *srs_orig_recipient     = NULL;
1408 uschar *srs_orig_sender        = NULL;
1409 uschar *srs_recipient          = NULL;
1410 uschar *srs_secrets            = NULL;
1411 uschar *srs_status             = NULL;
1412 BOOL    srs_usehash            = TRUE;
1413 BOOL    srs_usetimestamp       = TRUE;
1414 #endif
1415 BOOL    strict_acl_vars        = FALSE;
1416 int     string_datestamp_offset= -1;
1417 int     string_datestamp_length= 0;
1418 int     string_datestamp_type  = -1;
1419 BOOL    strip_excess_angle_brackets = FALSE;
1420 BOOL    strip_trailing_dot     = FALSE;
1421 uschar *submission_domain      = NULL;
1422 BOOL    submission_mode        = FALSE;
1423 uschar *submission_name        = NULL;
1424 BOOL    suppress_local_fixups  = FALSE;
1425 BOOL    suppress_local_fixups_default = FALSE;
1426 BOOL    synchronous_delivery   = FALSE;
1427 BOOL    syslog_duplication     = TRUE;
1428 int     syslog_facility        = LOG_MAIL;
1429 BOOL    syslog_pid             = TRUE;
1430 uschar *syslog_processname     = US"exim";
1431 BOOL    syslog_timestamp       = TRUE;
1432 uschar *system_filter          = NULL;
1433
1434 uschar *system_filter_directory_transport = NULL;
1435 uschar *system_filter_file_transport = NULL;
1436 uschar *system_filter_pipe_transport = NULL;
1437 uschar *system_filter_reply_transport = NULL;
1438
1439 gid_t   system_filter_gid      = 0;
1440 BOOL    system_filter_gid_set  = FALSE;
1441 uid_t   system_filter_uid      = (uid_t)-1;
1442 BOOL    system_filter_uid_set  = FALSE;
1443 BOOL    system_filtering       = FALSE;
1444
1445 BOOL    tcp_fastopen_ok        = FALSE;
1446 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1447 BOOL    tcp_in_fastopen        = FALSE;
1448 BOOL    tcp_in_fastopen_logged = FALSE;
1449 BOOL    tcp_nodelay            = TRUE;
1450 int     tcp_out_fastopen       = 0;
1451 BOOL    tcp_out_fastopen_logged= FALSE;
1452 #ifdef USE_TCP_WRAPPERS
1453 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1454 #endif
1455 int     test_harness_load_avg  = 0;
1456 int     thismessage_size_limit = 0;
1457 int     timeout_frozen_after   = 0;
1458 BOOL    timestamps_utc         = FALSE;
1459
1460 transport_instance  *transports = NULL;
1461
1462 transport_instance  transport_defaults = {
1463     .next =                     NULL,
1464     .name =                     NULL,
1465     .info =                     NULL,
1466     .options_block =            NULL,
1467     .driver_name =              NULL,
1468     .setup =                    NULL,
1469     .batch_max =                1,
1470     .batch_id =                 NULL,
1471     .home_dir =                 NULL,
1472     .current_dir =              NULL,
1473     .expand_multi_domain =      NULL,
1474     .multi_domain =             TRUE,
1475     .overrides_hosts =          FALSE,
1476     .max_addresses =            100,
1477     .connection_max_messages =  500,
1478     .deliver_as_creator =       FALSE,
1479     .disable_logging =          FALSE,
1480     .initgroups =               FALSE,
1481     .uid_set =                  FALSE,
1482     .gid_set =                  FALSE,
1483     .uid =                      (uid_t)(-1),
1484     .gid =                      (gid_t)(-1),
1485     .expand_uid =               NULL,
1486     .expand_gid =               NULL,
1487     .warn_message =             NULL,
1488     .shadow =                   NULL,
1489     .shadow_condition =         NULL,
1490     .filter_command =           NULL,
1491     .add_headers =              NULL,
1492     .remove_headers =           NULL,
1493     .return_path =              NULL,
1494     .debug_string =             NULL,
1495     .max_parallel =             NULL,
1496     .message_size_limit =       NULL,
1497     .headers_rewrite =          NULL,
1498     .rewrite_rules =            NULL,
1499     .rewrite_existflags =       0,
1500     .filter_timeout =           300,
1501     .body_only =                FALSE,
1502     .delivery_date_add =        FALSE,
1503     .envelope_to_add =          FALSE,
1504     .headers_only =             FALSE,
1505     .rcpt_include_affixes =     FALSE,
1506     .return_path_add =          FALSE,
1507     .return_output =            FALSE,
1508     .return_fail_output =       FALSE,
1509     .log_output =               FALSE,
1510     .log_fail_output =          FALSE,
1511     .log_defer_output =         FALSE,
1512     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1513                                                  1 nor 0 so can detect unset */
1514 #ifndef DISABLE_EVENT
1515    .event_action =              NULL
1516 #endif
1517 };
1518
1519 int     transport_count;
1520 uschar *transport_name          = NULL;
1521 int     transport_newlines;
1522 const uschar **transport_filter_argv  = NULL;
1523 int     transport_filter_timeout;
1524 BOOL    transport_filter_timed_out = FALSE;
1525 int     transport_write_timeout= 0;
1526
1527 tree_node  *tree_dns_fails     = NULL;
1528 tree_node  *tree_duplicates    = NULL;
1529 tree_node  *tree_nonrecipients = NULL;
1530 tree_node  *tree_unusable      = NULL;
1531
1532 BOOL    trusted_caller         = FALSE;
1533 BOOL    trusted_config         = TRUE;
1534 gid_t  *trusted_groups         = NULL;
1535 uid_t  *trusted_users          = NULL;
1536 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1537
1538 uschar *unknown_login          = NULL;
1539 uschar *unknown_username       = NULL;
1540 uschar *untrusted_set_sender   = NULL;
1541
1542 /*  A regex for matching a "From_" line in an incoming message, in the form
1543
1544     From ph10 Fri Jan  5 12:35 GMT 1996
1545
1546 which  the "mail" commands send to the MTA (undocumented, of course), or in
1547 the  form
1548
1549     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1550
1551 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1552 Because  of variations in time formats, just match up to the minutes. That
1553 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1554 so  just require one digit for hours and minutes. The weekday is also absent
1555 in  some forms. */
1556
1557 uschar *uucp_from_pattern      = US
1558    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1559    "(?:"                                          /* Non-extracting bracket */
1560    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1561    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1562    ")"                                            /* End alternation */
1563    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1564
1565 uschar *uucp_from_sender       = US"$1";
1566
1567 uschar *verify_mode            = NULL;
1568 uschar *version_copyright      =
1569  US"Copyright (c) University of Cambridge, 1995 - 2018\n"
1570    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017";
1571 uschar *version_date           = US"?";
1572 uschar *version_cnumber        = US"????";
1573 uschar *version_string         = US"?";
1574
1575 uschar *warn_message_file      = NULL;
1576 int     warning_count          = 0;
1577 uschar *warnmsg_delay          = NULL;
1578 uschar *warnmsg_recipients     = NULL;
1579 BOOL    write_rejectlog        = TRUE;
1580
1581
1582 /*  End of globals.c */