src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2014 */
   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 = sizeof(optionlist_auths)/sizeof(optionlist);
  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 #endif
  53
  54 #ifdef EXPAND_DLFUNC
  55 tree_node *dlobj_anchor        = NULL;
  56 #endif
  57
  58 #ifdef LOOKUP_IBASE
  59 uschar *ibase_servers          = NULL;
  60 #endif
  61
  62 #ifdef LOOKUP_LDAP
  63 uschar *eldap_ca_cert_dir      = NULL;
  64 uschar *eldap_ca_cert_file     = NULL;
  65 uschar *eldap_cert_file        = NULL;
  66 uschar *eldap_cert_key         = NULL;
  67 uschar *eldap_cipher_suite     = NULL;
  68 uschar *eldap_default_servers  = NULL;
  69 uschar *eldap_require_cert     = NULL;
  70 int     eldap_version          = -1;
  71 BOOL    eldap_start_tls        = FALSE;
  72 #endif
  73
  74 #ifdef LOOKUP_MYSQL
  75 uschar *mysql_servers          = NULL;
  76 #endif
  77
  78 #ifdef LOOKUP_ORACLE
  79 uschar *oracle_servers         = NULL;
  80 #endif
  81
  82 #ifdef LOOKUP_PGSQL
  83 uschar *pgsql_servers          = NULL;
  84 #endif
  85
  86 #ifdef EXPERIMENTAL_REDIS
  87 uschar *redis_servers          = NULL;
  88 #endif
  89
  90 #ifdef LOOKUP_SQLITE
  91 int     sqlite_lock_timeout    = 5;
  92 #endif
  93
  94 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  95 BOOL    move_frozen_messages   = FALSE;
  96 #endif
  97
  98 /* These variables are outside the #ifdef because it keeps the code less
  99 cluttered in several places (e.g. during logging) if we can always refer to
 100 them. Also, the tls_ variables are now always visible. */
 101
 102 tls_support tls_in = {
 103  -1,   /* tls_active */
 104  0,    /* tls_bits */
 105  FALSE,/* tls_certificate_verified */
 106 #ifdef EXPERIMENTAL_DANE
 107  FALSE,/* dane_verified */
 108  0,    /* tlsa_usage */
 109 #endif
 110  NULL, /* tls_cipher */
 111  FALSE,/* tls_on_connect */
 112  NULL, /* tls_on_connect_ports */
 113  NULL, /* tls_ourcert */
 114  NULL, /* tls_peercert */
 115  NULL, /* tls_peerdn */
 116  NULL, /* tls_sni */
 117  0     /* tls_ocsp */
 118 };
 119 tls_support tls_out = {
 120  -1,   /* tls_active */
 121  0,    /* tls_bits */
 122  FALSE,/* tls_certificate_verified */
 123 #ifdef EXPERIMENTAL_DANE
 124  FALSE,/* dane_verified */
 125  0,    /* tlsa_usage */
 126 #endif
 127  NULL, /* tls_cipher */
 128  FALSE,/* tls_on_connect */
 129  NULL, /* tls_on_connect_ports */
 130  NULL, /* tls_ourcert */
 131  NULL, /* tls_peercert */
 132  NULL, /* tls_peerdn */
 133  NULL, /* tls_sni */
 134  0     /* tls_ocsp */
 135 };
 136
 137 uschar *dsn_envid              = NULL;
 138 int     dsn_ret                = 0;
 139 const pcre  *regex_DSN         = NULL;
 140 BOOL    smtp_use_dsn           = FALSE;
 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 *gnutls_require_mac     = NULL;
 147 uschar *gnutls_require_kx      = NULL;
 148 uschar *gnutls_require_proto   = NULL;
 149 uschar *openssl_options        = NULL;
 150 const pcre *regex_STARTTLS     = NULL;
 151 uschar *tls_advertise_hosts    = NULL;    /* This is deliberate */
 152 uschar *tls_certificate        = NULL;
 153 uschar *tls_crl                = NULL;
 154 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 155 that's the interop problem which has been observed: GnuTLS suggesting a higher
 156 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 157 int     tls_dh_max_bits        = 2236;
 158 uschar *tls_dhparam            = NULL;
 159 #ifndef DISABLE_OCSP
 160 uschar *tls_ocsp_file          = NULL;
 161 #endif
 162 BOOL    tls_offered            = FALSE;
 163 uschar *tls_privatekey         = NULL;
 164 BOOL    tls_remember_esmtp     = FALSE;
 165 uschar *tls_require_ciphers    = NULL;
 166 uschar *tls_try_verify_hosts   = NULL;
 167 uschar *tls_verify_certificates= US"system";
 168 uschar *tls_verify_hosts       = NULL;
 169 #endif
 170
 171 #ifndef DISABLE_PRDR
 172 /* Per Recipient Data Response variables */
 173 BOOL    prdr_enable            = FALSE;
 174 BOOL    prdr_requested         = FALSE;
 175 const pcre *regex_PRDR         = NULL;
 176 #endif
 177
 178 #ifdef EXPERIMENTAL_INTERNATIONAL
 179 const pcre *regex_UTF8         = NULL;
 180 #endif
 181
 182 /* Input-reading functions for messages, so we can use special ones for
 183 incoming TCP/IP. The defaults use stdin. We never need these for any
 184 stand-alone tests. */
 185
 186 #ifndef STAND_ALONE
 187 int (*receive_getc)(void)      = stdin_getc;
 188 int (*receive_ungetc)(int)     = stdin_ungetc;
 189 int (*receive_feof)(void)      = stdin_feof;
 190 int (*receive_ferror)(void)    = stdin_ferror;
 191 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 192 #endif
 193
 194
 195 /* List of per-address expansion variables for clearing and saving/restoring
 196 when verifying one address while routing/verifying another. We have to have
 197 the size explicit, because it is referenced from more than one module. */
 198
 199 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 200   CUSS &deliver_address_data,
 201   CUSS &deliver_domain,
 202   CUSS &deliver_domain_data,
 203   CUSS &deliver_domain_orig,
 204   CUSS &deliver_domain_parent,
 205   CUSS &deliver_localpart,
 206   CUSS &deliver_localpart_data,
 207   CUSS &deliver_localpart_orig,
 208   CUSS &deliver_localpart_parent,
 209   CUSS &deliver_localpart_prefix,
 210   CUSS &deliver_localpart_suffix,
 211   CUSS (uschar **)(&deliver_recipients),
 212   CUSS &deliver_host,
 213   CUSS &deliver_home,
 214   CUSS &address_file,
 215   CUSS &address_pipe,
 216   CUSS &self_hostname,
 217   NULL };
 218
 219 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 220
 221 /* General global variables */
 222
 223 header_line *acl_added_headers = NULL;
 224 tree_node *acl_anchor          = NULL;
 225 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 226                                   NULL, NULL, NULL, NULL};
 227 int     acl_narg               = 0;
 228
 229 uschar *acl_not_smtp           = NULL;
 230 #ifdef WITH_CONTENT_SCAN
 231 uschar *acl_not_smtp_mime      = NULL;
 232 #endif
 233 uschar *acl_not_smtp_start     = NULL;
 234 uschar *acl_removed_headers    = NULL;
 235 uschar *acl_smtp_auth          = NULL;
 236 uschar *acl_smtp_connect       = NULL;
 237 uschar *acl_smtp_data          = NULL;
 238 #ifndef DISABLE_PRDR
 239 uschar *acl_smtp_data_prdr     = US"accept";
 240 #endif
 241 #ifndef DISABLE_DKIM
 242 uschar *acl_smtp_dkim          = NULL;
 243 #endif
 244 uschar *acl_smtp_etrn          = NULL;
 245 uschar *acl_smtp_expn          = NULL;
 246 uschar *acl_smtp_helo          = NULL;
 247 uschar *acl_smtp_mail          = NULL;
 248 uschar *acl_smtp_mailauth      = NULL;
 249 #ifdef WITH_CONTENT_SCAN
 250 uschar *acl_smtp_mime          = NULL;
 251 #endif
 252 uschar *acl_smtp_notquit       = NULL;
 253 uschar *acl_smtp_predata       = NULL;
 254 uschar *acl_smtp_quit          = NULL;
 255 uschar *acl_smtp_rcpt          = NULL;
 256 uschar *acl_smtp_starttls      = NULL;
 257 uschar *acl_smtp_vrfy          = NULL;
 258
 259 BOOL    acl_temp_details       = FALSE;
 260 tree_node *acl_var_c           = NULL;
 261 tree_node *acl_var_m           = NULL;
 262 uschar *acl_verify_message     = NULL;
 263 string_item *acl_warn_logged   = NULL;
 264
 265 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 266 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 267
 268 uschar *acl_wherenames[]       = { US"RCPT",
 269                                    US"MAIL",
 270                                    US"PREDATA",
 271                                    US"MIME",
 272                                    US"DKIM",
 273                                    US"DATA",
 274 #ifndef DISABLE_PRDR
 275                                    US"PRDR",
 276 #endif
 277                                    US"non-SMTP",
 278                                    US"AUTH",
 279                                    US"connection",
 280                                    US"ETRN",
 281                                    US"EXPN",
 282                                    US"EHLO or HELO",
 283                                    US"MAILAUTH",
 284                                    US"non-SMTP-start",
 285                                    US"NOTQUIT",
 286                                    US"QUIT",
 287                                    US"STARTTLS",
 288                                    US"VRFY",
 289                                    US"delivery",
 290                                    US"unknown"
 291                                  };
 292
 293 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 294                                    US"550",     /* MAIL */
 295                                    US"550",     /* PREDATA */
 296                                    US"550",     /* MIME */
 297                                    US"550",     /* DKIM */
 298                                    US"550",     /* DATA */
 299 #ifndef DISABLE_PRDR
 300                                    US"550",    /* RCPT PRDR */
 301 #endif
 302                                    US"0",       /* not SMTP; not relevant */
 303                                    US"503",     /* AUTH */
 304                                    US"550",     /* connect */
 305                                    US"458",     /* ETRN */
 306                                    US"550",     /* EXPN */
 307                                    US"550",     /* HELO/EHLO */
 308                                    US"0",       /* MAILAUTH; not relevant */
 309                                    US"0",       /* not SMTP; not relevant */
 310                                    US"0",       /* NOTQUIT; not relevant */
 311                                    US"0",       /* QUIT; not relevant */
 312                                    US"550",     /* STARTTLS */
 313                                    US"252",     /* VRFY */
 314                                    US"0",       /* delivery; not relevant */
 315                                    US"0"        /* unknown; not relevant */
 316                                  };
 317
 318 BOOL    active_local_from_check = FALSE;
 319 BOOL    active_local_sender_retain = FALSE;
 320 int     body_8bitmime = 0;
 321 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 322 address_item  *addr_duplicate  = NULL;
 323
 324 address_item address_defaults = {
 325   NULL,                 /* next */
 326   NULL,                 /* parent */
 327   NULL,                 /* first */
 328   NULL,                 /* dupof */
 329   NULL,                 /* start_router */
 330   NULL,                 /* router */
 331   NULL,                 /* transport */
 332   NULL,                 /* host_list */
 333   NULL,                 /* host_used */
 334   NULL,                 /* fallback_hosts */
 335   NULL,                 /* reply */
 336   NULL,                 /* retries */
 337   NULL,                 /* address */
 338   NULL,                 /* unique */
 339   NULL,                 /* cc_local_part */
 340   NULL,                 /* lc_local_part */
 341   NULL,                 /* local_part */
 342   NULL,                 /* prefix */
 343   NULL,                 /* suffix */
 344   NULL,                 /* domain */
 345   NULL,                 /* address_retry_key */
 346   NULL,                 /* domain_retry_key */
 347   NULL,                 /* current_dir */
 348   NULL,                 /* home_dir */
 349   NULL,                 /* message */
 350   NULL,                 /* user_message */
 351   NULL,                 /* onetime_parent */
 352   NULL,                 /* pipe_expandn */
 353   NULL,                 /* return_filename */
 354   NULL,                 /* self_hostname */
 355   NULL,                 /* shadow_message */
 356   #ifdef SUPPORT_TLS
 357   NULL,                 /* cipher */
 358   NULL,                 /* ourcert */
 359   NULL,                 /* peercert */
 360   NULL,                 /* peerdn */
 361   OCSP_NOT_REQ,         /* ocsp */
 362   #endif
 363   NULL,                 /* authenticator */
 364   NULL,                 /* auth_id */
 365   NULL,                 /* auth_sndr */
 366   NULL,                 /* dsn_orcpt */
 367   0,                    /* dsn_flags */
 368   0,                    /* dsn_aware */
 369   (uid_t)(-1),          /* uid */
 370   (gid_t)(-1),          /* gid */
 371   0,                    /* flags */
 372   { 0 },                /* domain_cache - any larger array should be zeroed */
 373   { 0 },                /* localpart_cache - ditto */
 374   -1,                   /* mode */
 375   0,                    /* more_errno */
 376   ERRNO_UNKNOWNERROR,   /* basic_errno */
 377   0,                    /* child_count */
 378   -1,                   /* return_file */
 379   SPECIAL_NONE,         /* special_action */
 380   DEFER,                /* transport_return */
 381   {                     /* fields that are propagated to children */
 382     NULL,               /* address_data */
 383     NULL,               /* domain_data */
 384     NULL,               /* localpart_data */
 385     NULL,               /* errors_address */
 386     NULL,               /* extra_headers */
 387     NULL,               /* remove_headers */
 388 #ifdef EXPERIMENTAL_SRS
 389     NULL,               /* srs_sender */
 390 #endif
 391 #ifdef EXPERIMENTAL_INTERNATIONAL
 392     FALSE,              /* utf8 */
 393 #endif
 394   }
 395 };
 396
 397 uschar *address_file           = NULL;
 398 uschar *address_pipe           = NULL;
 399 BOOL    address_test_mode      = FALSE;
 400 tree_node *addresslist_anchor  = NULL;
 401 int     addresslist_count      = 0;
 402 gid_t  *admin_groups           = NULL;
 403 BOOL    admin_user             = FALSE;
 404 BOOL    allow_auth_unadvertised= FALSE;
 405 BOOL    allow_domain_literals  = FALSE;
 406 BOOL    allow_mx_to_ip         = FALSE;
 407 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 408 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 409 BOOL    allow_utf8_domains     = FALSE;
 410 uschar *authenticated_fail_id  = NULL;
 411 uschar *authenticated_id       = NULL;
 412 uschar *authenticated_sender   = NULL;
 413 BOOL    authentication_failed  = FALSE;
 414 auth_instance  *auths          = NULL;
 415 uschar *auth_advertise_hosts   = US"*";
 416 auth_instance auth_defaults    = {
 417     NULL,                      /* chain pointer */
 418     NULL,                      /* name */
 419     NULL,                      /* info */
 420     NULL,                      /* private options block pointer */
 421     NULL,                      /* driver_name */
 422     NULL,                      /* advertise_condition */
 423     NULL,                      /* client_condition */
 424     NULL,                      /* public_name */
 425     NULL,                      /* set_id */
 426     NULL,                      /* set_client_id */
 427     NULL,                      /* server_mail_auth_condition */
 428     NULL,                      /* server_debug_string */
 429     NULL,                      /* server_condition */
 430     FALSE,                     /* client */
 431     FALSE,                     /* server */
 432     FALSE                      /* advertised */
 433 };
 434
 435 uschar *auth_defer_msg         = US"reason not recorded";
 436 uschar *auth_defer_user_msg    = US"";
 437 uschar *auth_vars[AUTH_VARS];
 438 int     auto_thaw              = 0;
 439 #ifdef WITH_CONTENT_SCAN
 440 BOOL    av_failed              = FALSE;
 441 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 442 #endif
 443
 444 BOOL    background_daemon      = TRUE;
 445
 446 #if BASE_62 == 62
 447 uschar *base62_chars=
 448     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 449 #else
 450 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 451 #endif
 452
 453 uschar *bi_command             = NULL;
 454 uschar *big_buffer             = NULL;
 455 int     big_buffer_size        = BIG_BUFFER_SIZE;
 456 #ifdef EXPERIMENTAL_BRIGHTMAIL
 457 uschar *bmi_alt_location       = NULL;
 458 uschar *bmi_base64_tracker_verdict = NULL;
 459 uschar *bmi_base64_verdict     = NULL;
 460 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 461 int     bmi_deliver            = 1;
 462 int     bmi_run                = 0;
 463 uschar *bmi_verdicts           = NULL;
 464 #endif
 465 int     body_linecount         = 0;
 466 int     body_zerocount         = 0;
 467 uschar *bounce_message_file    = NULL;
 468 uschar *bounce_message_text    = NULL;
 469 uschar *bounce_recipient       = NULL;
 470 BOOL    bounce_return_body     = TRUE;
 471 BOOL    bounce_return_message  = TRUE;
 472 int     bounce_return_size_limit = 100*1024;
 473 uschar *bounce_sender_authentication = NULL;
 474 int     bsmtp_transaction_linecount = 0;
 475
 476 int     callout_cache_domain_positive_expire = 7*24*60*60;
 477 int     callout_cache_domain_negative_expire = 3*60*60;
 478 int     callout_cache_positive_expire = 24*60*60;
 479 int     callout_cache_negative_expire = 2*60*60;
 480 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 481 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 482 int     check_log_inodes       = 0;
 483 int     check_log_space        = 0;
 484 BOOL    check_rfc2047_length   = TRUE;
 485 int     check_spool_inodes     = 0;
 486 int     check_spool_space      = 0;
 487 uschar  *client_authenticator  = NULL;
 488 uschar  *client_authenticated_id = NULL;
 489 uschar  *client_authenticated_sender = NULL;
 490 int     clmacro_count          = 0;
 491 uschar *clmacros[MAX_CLMACROS];
 492 BOOL    config_changed         = FALSE;
 493 FILE   *config_file            = NULL;
 494 uschar *config_filename        = NULL;
 495 int     config_lineno          = 0;
 496 #ifdef CONFIGURE_GROUP
 497 gid_t   config_gid             = CONFIGURE_GROUP;
 498 #endif
 499 uschar *config_main_filelist   = US CONFIGURE_FILE
 500                          "\0<-----------Space to patch configure_filename->";
 501 uschar *config_main_filename   = NULL;
 502 uschar *config_main_directory  = NULL;
 503
 504 #ifdef CONFIGURE_OWNER
 505 uid_t   config_uid             = CONFIGURE_OWNER;
 506 #endif
 507
 508 int     connection_max_messages= -1;
 509 uschar *continue_hostname      = NULL;
 510 uschar *continue_host_address  = NULL;
 511 BOOL    continue_more          = FALSE;
 512 int     continue_sequence      = 1;
 513 uschar *continue_transport     = NULL;
 514
 515 uschar *csa_status             = NULL;
 516 cut_t   cutthrough = {
 517   FALSE,                                /* delivery: when to attempt */
 518   -1,                                   /* fd: open connection */
 519   0,                                    /* nrcpt: number of addresses */
 520 };
 521
 522 BOOL    daemon_listen          = FALSE;
 523 uschar *daemon_smtp_port       = US"smtp";
 524 int     daemon_startup_retries = 9;
 525 int     daemon_startup_sleep   = 30;
 526
 527 #ifdef EXPERIMENTAL_DCC
 528 BOOL    dcc_direct_add_header  = FALSE;
 529 uschar *dcc_header             = NULL;
 530 uschar *dcc_result             = NULL;
 531 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 532 uschar *dccifd_options         = US"header";
 533 #endif
 534
 535 BOOL    debug_daemon           = FALSE;
 536 int     debug_fd               = -1;
 537 FILE   *debug_file             = NULL;
 538 bit_table debug_options[]      = {
 539   { US"acl",            D_acl },
 540   { US"all",            D_all },
 541   { US"auth",           D_auth },
 542   { US"deliver",        D_deliver },
 543   { US"dns",            D_dns },
 544   { US"dnsbl",          D_dnsbl },
 545   { US"exec",           D_exec },
 546   { US"expand",         D_expand },
 547   { US"filter",         D_filter },
 548   { US"hints_lookup",   D_hints_lookup },
 549   { US"host_lookup",    D_host_lookup },
 550   { US"ident",          D_ident },
 551   { US"interface",      D_interface },
 552   { US"lists",          D_lists },
 553   { US"load",           D_load },
 554   { US"local_scan",     D_local_scan },
 555   { US"lookup",         D_lookup },
 556   { US"memory",         D_memory },
 557   { US"pid",            D_pid },
 558   { US"process_info",   D_process_info },
 559   { US"queue_run",      D_queue_run },
 560   { US"receive",        D_receive },
 561   { US"resolver",       D_resolver },
 562   { US"retry",          D_retry },
 563   { US"rewrite",        D_rewrite },
 564   { US"route",          D_route },
 565   { US"timestamp",      D_timestamp },
 566   { US"tls",            D_tls },
 567   { US"transport",      D_transport },
 568   { US"uid",            D_uid },
 569   { US"verify",         D_verify }
 570 };
 571 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 572 unsigned int debug_selector    = 0;
 573 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 574 uschar *delay_warning_condition=
 575   US"${if or {"
 576             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 577             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 578             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 579             "} {no}{yes}}";
 580 BOOL    delivery_date_remove   = TRUE;
 581 uschar *deliver_address_data   = NULL;
 582 int     deliver_datafile       = -1;
 583 const uschar *deliver_domain   = NULL;
 584 uschar *deliver_domain_data    = NULL;
 585 const uschar *deliver_domain_orig = NULL;
 586 const uschar *deliver_domain_parent = NULL;
 587 BOOL    deliver_drop_privilege = FALSE;
 588 BOOL    deliver_firsttime      = FALSE;
 589 BOOL    deliver_force          = FALSE;
 590 BOOL    deliver_freeze         = FALSE;
 591 time_t  deliver_frozen_at      = 0;
 592 uschar *deliver_home           = NULL;
 593 const uschar *deliver_host     = NULL;
 594 const uschar *deliver_host_address = NULL;
 595 int     deliver_host_port      = 0;
 596 uschar *deliver_in_buffer      = NULL;
 597 ino_t   deliver_inode          = 0;
 598 uschar *deliver_localpart      = NULL;
 599 uschar *deliver_localpart_data = NULL;
 600 uschar *deliver_localpart_orig = NULL;
 601 uschar *deliver_localpart_parent = NULL;
 602 uschar *deliver_localpart_prefix = NULL;
 603 uschar *deliver_localpart_suffix = NULL;
 604 BOOL    deliver_force_thaw     = FALSE;
 605 BOOL    deliver_manual_thaw    = FALSE;
 606 uschar *deliver_out_buffer     = NULL;
 607 int     deliver_queue_load_max = -1;
 608 address_item  *deliver_recipients = NULL;
 609 uschar *deliver_selectstring   = NULL;
 610 BOOL    deliver_selectstring_regex = FALSE;
 611 uschar *deliver_selectstring_sender = NULL;
 612 BOOL    deliver_selectstring_sender_regex = FALSE;
 613 #ifdef WITH_OLD_DEMIME
 614 int     demime_errorlevel      = 0;
 615 int     demime_ok              = 0;
 616 uschar *demime_reason          = NULL;
 617 #endif
 618 BOOL    disable_callout_flush  = FALSE;
 619 BOOL    disable_delay_flush    = FALSE;
 620 #ifdef ENABLE_DISABLE_FSYNC
 621 BOOL    disable_fsync          = FALSE;
 622 #endif
 623 BOOL    disable_ipv6           = FALSE;
 624 BOOL    disable_logging        = FALSE;
 625
 626 #ifndef DISABLE_DKIM
 627 uschar *dkim_cur_signer          = NULL;
 628 uschar *dkim_signers             = NULL;
 629 uschar *dkim_signing_domain      = NULL;
 630 uschar *dkim_signing_selector    = NULL;
 631 uschar *dkim_verify_signers      = US"$dkim_signers";
 632 BOOL    dkim_collect_input       = FALSE;
 633 BOOL    dkim_disable_verify      = FALSE;
 634 #endif
 635 #ifdef EXPERIMENTAL_DMARC
 636 BOOL    dmarc_has_been_checked  = FALSE;
 637 uschar *dmarc_ar_header         = NULL;
 638 uschar *dmarc_domain_policy     = NULL;
 639 uschar *dmarc_forensic_sender   = NULL;
 640 uschar *dmarc_history_file      = NULL;
 641 uschar *dmarc_status            = NULL;
 642 uschar *dmarc_status_text       = NULL;
 643 uschar *dmarc_tld_file          = NULL;
 644 uschar *dmarc_used_domain       = NULL;
 645 BOOL    dmarc_disable_verify    = FALSE;
 646 BOOL    dmarc_enable_forensic   = FALSE;
 647 #endif
 648
 649 uschar *dns_again_means_nonexist = NULL;
 650 int     dns_csa_search_limit   = 5;
 651 BOOL    dns_csa_use_reverse    = TRUE;
 652 #ifdef EXPERIMENTAL_DANE
 653 int     dns_dane_ok            = -1;
 654 #endif
 655 uschar *dns_ipv4_lookup        = NULL;
 656 int     dns_retrans            = 0;
 657 int     dns_retry              = 0;
 658 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 659 int     dns_use_edns0          = -1; /* <0 = not coerced */
 660 uschar *dnslist_domain         = NULL;
 661 uschar *dnslist_matched        = NULL;
 662 uschar *dnslist_text           = NULL;
 663 uschar *dnslist_value          = NULL;
 664 tree_node *domainlist_anchor   = NULL;
 665 int     domainlist_count       = 0;
 666 BOOL    dont_deliver           = FALSE;
 667 BOOL    dot_ends               = TRUE;
 668 BOOL    drop_cr                = FALSE;         /* No longer used */
 669 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 670
 671 BOOL    enable_dollar_recipients = FALSE;
 672 BOOL    envelope_to_remove     = TRUE;
 673 int     errno_quota            = ERRNO_QUOTA;
 674 uschar *errors_copy            = NULL;
 675 int     error_handling         = ERRORS_SENDER;
 676 uschar *errors_reply_to        = NULL;
 677 int     errors_sender_rc       = EXIT_FAILURE;
 678 #ifdef EXPERIMENTAL_EVENT
 679 uschar *event_action             = NULL;        /* expansion for delivery events */
 680 uschar *event_data               = NULL;        /* auxilary data variable for event */
 681 int     event_defer_errno        = 0;
 682 const uschar *event_name         = NULL;        /* event name variable */
 683 #endif
 684
 685
 686 gid_t   exim_gid               = EXIM_GID;
 687 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 688 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 689                         "\0<---------------Space to patch exim_path->";
 690 uid_t   exim_uid               = EXIM_UID;
 691 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 692 int     expand_forbid          = 0;
 693 int     expand_nlength[EXPAND_MAXN+1];
 694 int     expand_nmax            = -1;
 695 uschar *expand_nstring[EXPAND_MAXN+1];
 696 BOOL    expand_string_forcedfail = FALSE;
 697 uschar *expand_string_message;
 698 BOOL    extract_addresses_remove_arguments = TRUE;
 699 uschar *extra_local_interfaces = NULL;
 700
 701 int     fake_response          = OK;
 702 uschar *fake_response_text     = US"Your message has been rejected but is "
 703                                    "being kept for evaluation.\nIf it was a "
 704                                    "legitimate message, it may still be "
 705                                    "delivered to the target recipient(s).";
 706 int     filter_n[FILTER_VARIABLE_COUNT];
 707 BOOL    filter_running         = FALSE;
 708 int     filter_sn[FILTER_VARIABLE_COUNT];
 709 int     filter_test            = FTEST_NONE;
 710 uschar *filter_test_sfile      = NULL;
 711 uschar *filter_test_ufile      = NULL;
 712 uschar *filter_thisaddress     = NULL;
 713 int     finduser_retries       = 0;
 714 #ifdef WITH_OLD_DEMIME
 715 uschar *found_extension        = NULL;
 716 #endif
 717 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 718 uschar *freeze_tell            = NULL;
 719 uschar *freeze_tell_config     = NULL;
 720 uschar *fudged_queue_times     = US"";
 721
 722 uschar *gecos_name             = NULL;
 723 uschar *gecos_pattern          = NULL;
 724 rewrite_rule  *global_rewrite_rules = NULL;
 725
 726 uschar *headers_charset        = US HEADERS_CHARSET;
 727 int     header_insert_maxlen   = 64 * 1024;
 728 header_line  *header_last      = NULL;
 729 header_line  *header_list      = NULL;
 730 int     header_maxsize         = HEADER_MAXSIZE;
 731 int     header_line_maxsize    = 0;
 732
 733 header_name header_names[] = {
 734   { US"bcc",            3, TRUE,  htype_bcc },
 735   { US"cc",             2, TRUE,  htype_cc },
 736   { US"date",           4, TRUE,  htype_date },
 737   { US"delivery-date", 13, FALSE, htype_delivery_date },
 738   { US"envelope-to",   11, FALSE, htype_envelope_to },
 739   { US"from",           4, TRUE,  htype_from },
 740   { US"message-id",    10, TRUE,  htype_id },
 741   { US"received",       8, FALSE, htype_received },
 742   { US"reply-to",       8, FALSE, htype_reply_to },
 743   { US"return-path",   11, FALSE, htype_return_path },
 744   { US"sender",         6, TRUE,  htype_sender },
 745   { US"subject",        7, FALSE, htype_subject },
 746   { US"to",             2, TRUE,  htype_to }
 747 };
 748
 749 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 750
 751 BOOL    header_rewritten       = FALSE;
 752 uschar *helo_accept_junk_hosts = NULL;
 753 uschar *helo_allow_chars       = US"";
 754 uschar *helo_lookup_domains    = US"@ : @[]";
 755 uschar *helo_try_verify_hosts  = NULL;
 756 BOOL    helo_verified          = FALSE;
 757 BOOL    helo_verify_failed     = FALSE;
 758 uschar *helo_verify_hosts      = NULL;
 759 const uschar *hex_digits       = CUS"0123456789abcdef";
 760 uschar *hold_domains           = NULL;
 761 BOOL    host_checking          = FALSE;
 762 BOOL    host_checking_callout  = FALSE;
 763 uschar *host_data              = NULL;
 764 BOOL    host_find_failed_syntax= FALSE;
 765 uschar *host_lookup            = NULL;
 766 BOOL    host_lookup_deferred   = FALSE;
 767 BOOL    host_lookup_failed     = FALSE;
 768 uschar *host_lookup_order      = US"bydns:byaddr";
 769 uschar *host_lookup_msg        = US"";
 770 int     host_number            = 0;
 771 uschar *host_number_string     = NULL;
 772 uschar *host_reject_connection = NULL;
 773 tree_node *hostlist_anchor     = NULL;
 774 int     hostlist_count         = 0;
 775 uschar *hosts_treat_as_local   = NULL;
 776 uschar *hosts_connection_nolog = NULL;
 777
 778 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 779 BOOL    ignore_fromline_local  = FALSE;
 780 uschar *ignore_fromline_hosts  = NULL;
 781 BOOL    inetd_wait_mode        = FALSE;
 782 int     inetd_wait_timeout     = -1;
 783 uschar *interface_address      = NULL;
 784 int     interface_port         = -1;
 785 BOOL    is_inetd               = FALSE;
 786 uschar *iterate_item           = NULL;
 787
 788 int     journal_fd             = -1;
 789
 790 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 791
 792 uschar *eldap_dn               = NULL;
 793 int     load_average           = -2;
 794 BOOL    local_error_message    = FALSE;
 795 BOOL    local_from_check       = TRUE;
 796 uschar *local_from_prefix      = NULL;
 797 uschar *local_from_suffix      = NULL;
 798
 799 #if HAVE_IPV6
 800 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 801 #else
 802 uschar *local_interfaces       = US"0.0.0.0";
 803 #endif
 804
 805 uschar *local_scan_data        = NULL;
 806 int     local_scan_timeout     = 5*60;
 807 BOOL    local_sender_retain    = FALSE;
 808 gid_t   local_user_gid         = (gid_t)(-1);
 809 uid_t   local_user_uid         = (uid_t)(-1);
 810
 811 tree_node *localpartlist_anchor= NULL;
 812 int     localpartlist_count    = 0;
 813 uschar *log_buffer             = NULL;
 814 unsigned int log_extra_selector = LX_default;
 815 uschar *log_file_path          = US LOG_FILE_PATH
 816                            "\0<--------------Space to patch log_file_path->";
 817
 818 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 819 are the ones that get put into log_write_selector. They can be used in calls to
 820 log_write() to test for the bit. The options with LX_xxx identifiers have
 821 values greater than 0x80000000 and are put into log_extra_selector (without the
 822 top bit). They are never used in calls to log_write(), but are tested
 823 independently. This separation became necessary when the number of log
 824 selectors was getting close to filling a 32-bit word. */
 825
 826 /* Note that this list must be in alphabetical order. */
 827
 828 bit_table log_options[]        = {
 829   { US"8bitmime",                     LX_8bitmime },
 830   { US"acl_warn_skipped",             LX_acl_warn_skipped },
 831   { US"address_rewrite",              L_address_rewrite },
 832   { US"all",                          L_all },
 833   { US"all_parents",                  L_all_parents },
 834   { US"arguments",                    LX_arguments },
 835   { US"connection_reject",            L_connection_reject },
 836   { US"delay_delivery",               L_delay_delivery },
 837   { US"deliver_time",                 LX_deliver_time },
 838   { US"delivery_size",                LX_delivery_size },
 839   { US"dnslist_defer",                L_dnslist_defer },
 840   { US"etrn",                         L_etrn },
 841   { US"host_lookup_failed",           L_host_lookup_failed },
 842   { US"ident_timeout",                LX_ident_timeout },
 843   { US"incoming_interface",           LX_incoming_interface },
 844   { US"incoming_port",                LX_incoming_port },
 845   { US"lost_incoming_connection",     L_lost_incoming_connection },
 846   { US"outgoing_port",                LX_outgoing_port },
 847   { US"pid",                          LX_pid },
 848 #ifdef EXPERIMENTAL_PROXY
 849   { US"proxy",                        LX_proxy },
 850 #endif
 851   { US"queue_run",                    L_queue_run },
 852   { US"queue_time",                   LX_queue_time },
 853   { US"queue_time_overall",           LX_queue_time_overall },
 854   { US"received_recipients",          LX_received_recipients },
 855   { US"received_sender",              LX_received_sender },
 856   { US"rejected_header",              LX_rejected_header },
 857   { US"rejected_headers",             LX_rejected_header },
 858   { US"retry_defer",                  L_retry_defer },
 859   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 860   { US"sender_on_delivery",           LX_sender_on_delivery },
 861   { US"sender_verify_fail",           LX_sender_verify_fail },
 862   { US"size_reject",                  L_size_reject },
 863   { US"skip_delivery",                L_skip_delivery },
 864   { US"smtp_confirmation",            LX_smtp_confirmation },
 865   { US"smtp_connection",              L_smtp_connection },
 866   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 867   { US"smtp_mailauth",                LX_smtp_mailauth },
 868   { US"smtp_no_mail",                 LX_smtp_no_mail },
 869   { US"smtp_protocol_error",          L_smtp_protocol_error },
 870   { US"smtp_syntax_error",            L_smtp_syntax_error },
 871   { US"subject",                      LX_subject },
 872   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 873   { US"tls_cipher",                   LX_tls_cipher },
 874   { US"tls_peerdn",                   LX_tls_peerdn },
 875   { US"tls_sni",                      LX_tls_sni },
 876   { US"unknown_in_list",              LX_unknown_in_list }
 877 };
 878
 879 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 880 int     log_reject_target      = 0;
 881 uschar *log_selector_string    = NULL;
 882 FILE   *log_stderr             = NULL;
 883 BOOL    log_testing_mode       = FALSE;
 884 BOOL    log_timezone           = FALSE;
 885 unsigned int log_write_selector= L_default;
 886 uschar *login_sender_address   = NULL;
 887 uschar *lookup_dnssec_authenticated = NULL;
 888 int     lookup_open_max        = 25;
 889 uschar *lookup_value           = NULL;
 890
 891 macro_item  *macros            = NULL;
 892 uschar *mailstore_basename     = NULL;
 893 #ifdef WITH_CONTENT_SCAN
 894 uschar *malware_name           = NULL;  /* Virus Name */
 895 #endif
 896 int     max_received_linelength= 0;
 897 int     max_username_length    = 0;
 898 int     message_age            = 0;
 899 uschar *message_body           = NULL;
 900 uschar *message_body_end       = NULL;
 901 BOOL    message_body_newlines  = FALSE;
 902 int     message_body_size      = 0;
 903 int     message_body_visible   = 500;
 904 int     message_ended          = END_NOTSTARTED;
 905 uschar *message_headers        = NULL;
 906 uschar *message_id;
 907 uschar *message_id_domain      = NULL;
 908 uschar *message_id_text        = NULL;
 909 struct timeval message_id_tv   = { 0, 0 };
 910 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 911 uschar *message_id_external;
 912 int     message_linecount      = 0;
 913 BOOL    message_logs           = TRUE;
 914 int     message_size           = 0;
 915 uschar *message_size_limit     = US"50M";
 916 #ifdef EXPERIMENTAL_INTERNATIONAL
 917 BOOL    message_smtputf8       = FALSE;
 918 #endif
 919 uschar  message_subdir[2]      = { 0, 0 };
 920 uschar *message_reference      = NULL;
 921
 922 /* MIME ACL expandables */
 923 #ifdef WITH_CONTENT_SCAN
 924 int     mime_anomaly_level     = 0;
 925 const uschar *mime_anomaly_text      = NULL;
 926 uschar *mime_boundary          = NULL;
 927 uschar *mime_charset           = NULL;
 928 uschar *mime_content_description = NULL;
 929 uschar *mime_content_disposition = NULL;
 930 uschar *mime_content_id        = NULL;
 931 unsigned int mime_content_size = 0;
 932 uschar *mime_content_transfer_encoding = NULL;
 933 uschar *mime_content_type      = NULL;
 934 uschar *mime_decoded_filename  = NULL;
 935 uschar *mime_filename          = NULL;
 936 int     mime_is_multipart      = 0;
 937 int     mime_is_coverletter    = 0;
 938 int     mime_is_rfc822         = 0;
 939 int     mime_part_count        = -1;
 940 #endif
 941
 942 BOOL    mua_wrapper            = FALSE;
 943
 944 uid_t  *never_users            = NULL;
 945 #ifdef WITH_CONTENT_SCAN
 946 BOOL    no_mbox_unspool        = FALSE;
 947 #endif
 948 BOOL    no_multiline_responses = FALSE;
 949
 950 uid_t   original_euid;
 951 gid_t   originator_gid;
 952 uschar *originator_login       = NULL;
 953 uschar *originator_name        = NULL;
 954 uid_t   originator_uid;
 955 uschar *override_local_interfaces = NULL;
 956 uschar *override_pid_file_path = NULL;
 957
 958 BOOL    parse_allow_group      = FALSE;
 959 BOOL    parse_found_group      = FALSE;
 960 uschar *percent_hack_domains   = NULL;
 961 uschar *pid_file_path          = US PID_FILE_PATH
 962                            "\0<--------------Space to patch pid_file_path->";
 963 BOOL    pipelining_enable      = TRUE;
 964 uschar *pipelining_advertise_hosts = US"*";
 965 BOOL    preserve_message_logs  = FALSE;
 966 uschar *primary_hostname       = NULL;
 967 BOOL    print_topbitchars      = FALSE;
 968 uschar  process_info[PROCESS_INFO_SIZE];
 969 int     process_info_len       = 0;
 970 uschar *process_log_path       = NULL;
 971 BOOL    prod_requires_admin    = TRUE;
 972
 973 #ifdef EXPERIMENTAL_PROXY
 974 uschar *proxy_host_address     = US"";
 975 int     proxy_host_port        = 0;
 976 uschar *proxy_required_hosts   = US"";
 977 BOOL    proxy_session          = FALSE;
 978 BOOL    proxy_session_failed   = FALSE;
 979 uschar *proxy_target_address   = US"";
 980 int     proxy_target_port      = 0;
 981 #endif
 982
 983 uschar *prvscheck_address      = NULL;
 984 uschar *prvscheck_keynum       = NULL;
 985 uschar *prvscheck_result       = NULL;
 986
 987
 988 const uschar *qualify_domain_recipient = NULL;
 989 uschar *qualify_domain_sender  = NULL;
 990 BOOL    queue_2stage           = FALSE;
 991 uschar *queue_domains          = NULL;
 992 int     queue_interval         = -1;
 993 BOOL    queue_list_requires_admin = TRUE;
 994 BOOL    queue_only             = FALSE;
 995 uschar *queue_only_file        = NULL;
 996 int     queue_only_load        = -1;
 997 BOOL    queue_only_load_latch  = TRUE;
 998 BOOL    queue_only_override    = TRUE;
 999 BOOL    queue_only_policy      = FALSE;
1000 BOOL    queue_run_first_delivery = FALSE;
1001 BOOL    queue_run_force        = FALSE;
1002 BOOL    queue_run_in_order     = FALSE;
1003 BOOL    queue_run_local        = FALSE;
1004 int     queue_run_max          = 5;
1005 pid_t   queue_run_pid          = (pid_t)0;
1006 int     queue_run_pipe         = -1;
1007 BOOL    queue_running          = FALSE;
1008 BOOL    queue_smtp             = FALSE;
1009 uschar *queue_smtp_domains     = NULL;
1010
1011 unsigned int random_seed       = 0;
1012 tree_node *ratelimiters_cmd    = NULL;
1013 tree_node *ratelimiters_conn   = NULL;
1014 tree_node *ratelimiters_mail   = NULL;
1015 uschar *raw_active_hostname    = NULL;
1016 uschar *raw_sender             = NULL;
1017 uschar **raw_recipients        = NULL;
1018 int     raw_recipients_count   = 0;
1019
1020 int     rcpt_count             = 0;
1021 int     rcpt_fail_count        = 0;
1022 int     rcpt_defer_count       = 0;
1023 gid_t   real_gid;
1024 uid_t   real_uid;
1025 BOOL    really_exim            = TRUE;
1026 BOOL    receive_call_bombout   = FALSE;
1027 int     receive_linecount      = 0;
1028 int     receive_messagecount   = 0;
1029 int     receive_timeout        = 0;
1030 int     received_count         = 0;
1031 uschar *received_for           = NULL;
1032
1033 /*  This is the default text for Received headers generated by Exim. The
1034 date  will be automatically added on the end. */
1035
1036 uschar *received_header_text   = US
1037      "Received: "
1038      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1039      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1040      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1041      "by $primary_hostname "
1042      "${if def:received_protocol {with $received_protocol}} "
1043      #ifdef SUPPORT_TLS
1044      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1045      #endif
1046      "(Exim $version_number)\n\t"
1047      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1048      "id $message_exim_id"
1049      "${if def:received_for {\n\tfor $received_for}}"
1050      "\0<---------------Space to patch received_header_text->";
1051
1052 int     received_headers_max   = 30;
1053 uschar *received_protocol      = NULL;
1054 int     received_time          = 0;
1055 uschar *recipient_data         = NULL;
1056 uschar *recipient_unqualified_hosts = NULL;
1057 uschar *recipient_verify_failure = NULL;
1058 int     recipients_count       = 0;
1059 BOOL    recipients_discarded   = FALSE;
1060 recipient_item  *recipients_list = NULL;
1061 int     recipients_list_max    = 0;
1062 int     recipients_max         = 0;
1063 BOOL    recipients_max_reject  = FALSE;
1064 const pcre *regex_AUTH         = NULL;
1065 const pcre *regex_check_dns_names = NULL;
1066 const pcre *regex_From         = NULL;
1067 const pcre *regex_IGNOREQUOTA  = NULL;
1068 const pcre *regex_PIPELINING   = NULL;
1069 const pcre *regex_SIZE         = NULL;
1070 const pcre *regex_smtp_code    = NULL;
1071 const pcre *regex_ismsgid      = NULL;
1072 #ifdef WHITELIST_D_MACROS
1073 const pcre *regex_whitelisted_macro = NULL;
1074 #endif
1075 #ifdef WITH_CONTENT_SCAN
1076 uschar *regex_match_string     = NULL;
1077 #endif
1078 int     remote_delivery_count  = 0;
1079 int     remote_max_parallel    = 2;
1080 uschar *remote_sort_domains    = NULL;
1081 int     retry_data_expire      = 7*24*60*60;
1082 int     retry_interval_max     = 24*60*60;
1083 int     retry_maximum_timeout  = 0;        /* set from retry config */
1084 retry_config  *retries         = NULL;
1085 uschar *return_path            = NULL;
1086 BOOL    return_path_remove     = TRUE;
1087 int     rewrite_existflags     = 0;
1088 uschar *rfc1413_hosts          = US"@[]";
1089 int     rfc1413_query_timeout  = 0;
1090 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1091 uid_t   root_gid               = ROOT_GID;
1092 uid_t   root_uid               = ROOT_UID;
1093
1094 router_instance  *routers  = NULL;
1095 router_instance  router_defaults = {
1096     NULL,                      /* chain pointer */
1097     NULL,                      /* name */
1098     NULL,                      /* info */
1099     NULL,                      /* private options block pointer */
1100     NULL,                      /* driver name */
1101
1102     NULL,                      /* address_data */
1103 #ifdef EXPERIMENTAL_BRIGHTMAIL
1104     NULL,                      /* bmi_rule */
1105 #endif
1106     NULL,                      /* cannot_route_message */
1107     NULL,                      /* condition */
1108     NULL,                      /* current_directory */
1109     NULL,                      /* debug_string */
1110     NULL,                      /* domains */
1111     NULL,                      /* errors_to */
1112     NULL,                      /* expand_gid */
1113     NULL,                      /* expand_uid */
1114     NULL,                      /* expand_more */
1115     NULL,                      /* expand_unseen */
1116     NULL,                      /* extra_headers */
1117     NULL,                      /* fallback_hosts */
1118     NULL,                      /* home_directory */
1119     NULL,                      /* ignore_target_hosts */
1120     NULL,                      /* local_parts */
1121     NULL,                      /* pass_router_name */
1122     NULL,                      /* prefix */
1123     NULL,                      /* redirect_router_name */
1124     NULL,                      /* remove_headers */
1125     NULL,                      /* require_files */
1126     NULL,                      /* router_home_directory */
1127     US"freeze",                /* self */
1128     NULL,                      /* senders */
1129     NULL,                      /* suffix */
1130     NULL,                      /* translate_ip_address */
1131     NULL,                      /* transport_name */
1132
1133     TRUE,                      /* address_test */
1134 #ifdef EXPERIMENTAL_BRIGHTMAIL
1135     FALSE,                     /* bmi_deliver_alternate */
1136     FALSE,                     /* bmi_deliver_default */
1137     FALSE,                     /* bmi_dont_deliver */
1138 #endif
1139     TRUE,                      /* expn */
1140     FALSE,                     /* caseful_local_part */
1141     FALSE,                     /* check_local_user */
1142     FALSE,                     /* disable_logging */
1143     FALSE,                     /* fail_verify_recipient */
1144     FALSE,                     /* fail_verify_sender */
1145     FALSE,                     /* gid_set */
1146     FALSE,                     /* initgroups */
1147     TRUE_UNSET,                /* log_as_local */
1148     TRUE,                      /* more */
1149     FALSE,                     /* pass_on_timeout */
1150     FALSE,                     /* prefix_optional */
1151     TRUE,                      /* repeat_use */
1152     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1153     FALSE,                     /* same_domain_copy_routing */
1154     FALSE,                     /* self_rewrite */
1155     FALSE,                     /* suffix_optional */
1156     FALSE,                     /* verify_only */
1157     TRUE,                      /* verify_recipient */
1158     TRUE,                      /* verify_sender */
1159     FALSE,                     /* uid_set */
1160     FALSE,                     /* unseen */
1161     FALSE,                     /* dsn_lasthop */
1162
1163     self_freeze,               /* self_code */
1164     (uid_t)(-1),               /* uid */
1165     (gid_t)(-1),               /* gid */
1166
1167     NULL,                      /* fallback_hostlist */
1168     NULL,                      /* transport instance */
1169     NULL,                      /* pass_router */
1170     NULL                       /* redirect_router */
1171 };
1172
1173 uschar *router_name            = NULL;
1174
1175 ip_address_item *running_interfaces = NULL;
1176 BOOL    running_in_test_harness = FALSE;
1177
1178 /* This is a weird one. The following string gets patched in the binary by the
1179 script that sets up a copy of Exim for running in the test harness. It seems
1180 that compilers are now clever, and share constant strings if they can.
1181 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1182 make use of the end of this string in order to save space. So the patching then
1183 wrecks this. We defeat this optimization by adding some additional characters
1184 onto the end of the string. */
1185
1186 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1187
1188 int     runrc                  = 0;
1189
1190 uschar *search_error_message   = NULL;
1191 BOOL    search_find_defer      = FALSE;
1192 uschar *self_hostname          = NULL;
1193 uschar *sender_address         = NULL;
1194 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1195 uschar *sender_address_data    = NULL;
1196 BOOL    sender_address_forced  = FALSE;
1197 uschar *sender_address_unrewritten = NULL;
1198 uschar *sender_data            = NULL;
1199 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1200 uschar *sender_fullhost        = NULL;
1201 uschar *sender_helo_name       = NULL;
1202 uschar **sender_host_aliases   = &no_aliases;
1203 uschar *sender_host_address    = NULL;
1204 uschar *sender_host_authenticated = NULL;
1205 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1206 BOOL    sender_host_dnssec     = FALSE;
1207 uschar *sender_host_name       = NULL;
1208 int     sender_host_port       = 0;
1209 BOOL    sender_host_notsocket  = FALSE;
1210 BOOL    sender_host_unknown    = FALSE;
1211 uschar *sender_ident           = NULL;
1212 BOOL    sender_local           = FALSE;
1213 BOOL    sender_name_forced     = FALSE;
1214 uschar *sender_rate            = NULL;
1215 uschar *sender_rate_limit      = NULL;
1216 uschar *sender_rate_period     = NULL;
1217 uschar *sender_rcvhost         = NULL;
1218 BOOL    sender_set_untrusted   = FALSE;
1219 uschar *sender_unqualified_hosts = NULL;
1220 uschar *sender_verify_failure = NULL;
1221 address_item *sender_verified_list  = NULL;
1222 address_item *sender_verified_failed = NULL;
1223 int     sender_verified_rc     = -1;
1224 BOOL    sender_verified_responded = FALSE;
1225 uschar *sending_ip_address     = NULL;
1226 int     sending_port           = -1;
1227 SIGNAL_BOOL sigalrm_seen       = FALSE;
1228 uschar **sighup_argv           = NULL;
1229 int     smtp_accept_count      = 0;
1230 BOOL    smtp_accept_keepalive  = TRUE;
1231 int     smtp_accept_max        = 20;
1232 int     smtp_accept_max_nonmail= 10;
1233 uschar *smtp_accept_max_nonmail_hosts = US"*";
1234 int     smtp_accept_max_per_connection = 1000;
1235 uschar *smtp_accept_max_per_host = NULL;
1236 int     smtp_accept_queue      = 0;
1237 int     smtp_accept_queue_per_connection = 10;
1238 int     smtp_accept_reserve    = 0;
1239 uschar *smtp_active_hostname   = NULL;
1240 BOOL    smtp_authenticated     = FALSE;
1241 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1242                              "Exim $version_number $tod_full"
1243                              "\0<---------------Space to patch smtp_banner->";
1244 BOOL    smtp_batched_input     = FALSE;
1245 BOOL    smtp_check_spool_space = TRUE;
1246 int     smtp_ch_index          = 0;
1247 uschar *smtp_cmd_argument      = NULL;
1248 uschar *smtp_cmd_buffer        = NULL;
1249 time_t  smtp_connection_start  = 0;
1250 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1251 int     smtp_connect_backlog   = 20;
1252 double  smtp_delay_mail        = 0.0;
1253 double  smtp_delay_rcpt        = 0.0;
1254 BOOL    smtp_enforce_sync      = TRUE;
1255 FILE   *smtp_in                = NULL;
1256 BOOL    smtp_input             = FALSE;
1257 int     smtp_load_reserve      = -1;
1258 int     smtp_mailcmd_count     = 0;
1259 FILE   *smtp_out               = NULL;
1260 uschar *smtp_etrn_command      = NULL;
1261 BOOL    smtp_etrn_serialize    = TRUE;
1262 int     smtp_max_synprot_errors= 3;
1263 int     smtp_max_unknown_commands = 3;
1264 uschar *smtp_notquit_reason    = NULL;
1265 uschar *smtp_ratelimit_hosts   = NULL;
1266 uschar *smtp_ratelimit_mail    = NULL;
1267 uschar *smtp_ratelimit_rcpt    = NULL;
1268 uschar *smtp_read_error        = US"";
1269 int     smtp_receive_timeout   = 5*60;
1270 uschar *smtp_receive_timeout_s = NULL;
1271 uschar *smtp_reserve_hosts     = NULL;
1272 BOOL    smtp_return_error_details = FALSE;
1273 int     smtp_rlm_base          = 0;
1274 double  smtp_rlm_factor        = 0.0;
1275 int     smtp_rlm_limit         = 0;
1276 int     smtp_rlm_threshold     = INT_MAX;
1277 int     smtp_rlr_base          = 0;
1278 double  smtp_rlr_factor        = 0.0;
1279 int     smtp_rlr_limit         = 0;
1280 int     smtp_rlr_threshold     = INT_MAX;
1281 BOOL    smtp_use_pipelining    = FALSE;
1282 BOOL    smtp_use_size          = FALSE;
1283 #ifdef EXPERIMENTAL_INTERNATIONAL
1284 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1285 #endif
1286
1287 #ifdef WITH_CONTENT_SCAN
1288 uschar *spamd_address          = US"127.0.0.1 783";
1289 uschar *spam_bar               = NULL;
1290 uschar *spam_report            = NULL;
1291 uschar *spam_action            = NULL;
1292 uschar *spam_score             = NULL;
1293 uschar *spam_score_int         = NULL;
1294 #endif
1295 #ifdef EXPERIMENTAL_SPF
1296 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1297 uschar *spf_header_comment     = NULL;
1298 uschar *spf_received           = NULL;
1299 uschar *spf_result             = NULL;
1300 uschar *spf_smtp_comment       = NULL;
1301 #endif
1302
1303 BOOL    split_spool_directory  = FALSE;
1304 uschar *spool_directory        = US SPOOL_DIRECTORY
1305                            "\0<--------------Space to patch spool_directory->";
1306 #ifdef EXPERIMENTAL_SRS
1307 uschar *srs_config             = NULL;
1308 uschar *srs_db_address         = NULL;
1309 uschar *srs_db_key             = NULL;
1310 int     srs_hashlength         = 6;
1311 int     srs_hashmin            = -1;
1312 int     srs_maxage             = 31;
1313 uschar *srs_orig_recipient     = NULL;
1314 uschar *srs_orig_sender        = NULL;
1315 uschar *srs_recipient          = NULL;
1316 uschar *srs_secrets            = NULL;
1317 uschar *srs_status             = NULL;
1318 BOOL    srs_usehash            = TRUE;
1319 BOOL    srs_usetimestamp       = TRUE;
1320 #endif
1321 BOOL    strict_acl_vars        = FALSE;
1322 int     string_datestamp_offset= -1;
1323 int     string_datestamp_length= 0;
1324 int     string_datestamp_type  = -1;
1325 BOOL    strip_excess_angle_brackets = FALSE;
1326 BOOL    strip_trailing_dot     = FALSE;
1327 uschar *submission_domain      = NULL;
1328 BOOL    submission_mode        = FALSE;
1329 uschar *submission_name        = NULL;
1330 BOOL    suppress_local_fixups  = FALSE;
1331 BOOL    suppress_local_fixups_default = FALSE;
1332 BOOL    synchronous_delivery   = FALSE;
1333 BOOL    syslog_duplication     = TRUE;
1334 int     syslog_facility        = LOG_MAIL;
1335 uschar *syslog_processname     = US"exim";
1336 BOOL    syslog_timestamp       = TRUE;
1337 uschar *system_filter          = NULL;
1338
1339 uschar *system_filter_directory_transport = NULL;
1340 uschar *system_filter_file_transport = NULL;
1341 uschar *system_filter_pipe_transport = NULL;
1342 uschar *system_filter_reply_transport = NULL;
1343
1344 gid_t   system_filter_gid      = 0;
1345 BOOL    system_filter_gid_set  = FALSE;
1346 uid_t   system_filter_uid      = (uid_t)-1;
1347 BOOL    system_filter_uid_set  = FALSE;
1348 BOOL    system_filtering       = FALSE;
1349
1350 BOOL    tcp_nodelay            = TRUE;
1351 #ifdef USE_TCP_WRAPPERS
1352 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1353 #endif
1354 int     test_harness_load_avg  = 0;
1355 int     thismessage_size_limit = 0;
1356 int     timeout_frozen_after   = 0;
1357 BOOL    timestamps_utc         = FALSE;
1358
1359 transport_instance  *transports = NULL;
1360
1361 transport_instance  transport_defaults = {
1362     NULL,                     /* chain pointer */
1363     NULL,                     /* name */
1364     NULL,                     /* info */
1365     NULL,                     /* private options block pointer */
1366     NULL,                     /* driver name */
1367     NULL,                     /* setup entry point */
1368     1,                        /* batch_max */
1369     NULL,                     /* batch_id */
1370     NULL,                     /* home_dir */
1371     NULL,                     /* current_dir */
1372     NULL,                     /* expand-multi-domain */
1373     TRUE,                     /* multi-domain */
1374     FALSE,                    /* overrides_hosts */
1375     100,                      /* max_addresses */
1376     500,                      /* connection_max_messages */
1377     FALSE,                    /* deliver_as_creator */
1378     FALSE,                    /* disable_logging */
1379     FALSE,                    /* initgroups */
1380     FALSE,                    /* uid_set */
1381     FALSE,                    /* gid_set */
1382     (uid_t)(-1),              /* uid */
1383     (gid_t)(-1),              /* gid */
1384     NULL,                     /* expand_uid */
1385     NULL,                     /* expand_gid */
1386     NULL,                     /* warn_message */
1387     NULL,                     /* shadow */
1388     NULL,                     /* shadow_condition */
1389     NULL,                     /* filter_command */
1390     NULL,                     /* add_headers */
1391     NULL,                     /* remove_headers */
1392     NULL,                     /* return_path */
1393     NULL,                     /* debug_string */
1394     NULL,                     /* message_size_limit */
1395     NULL,                     /* headers_rewrite */
1396     NULL,                     /* rewrite_rules */
1397     0,                        /* rewrite_existflags */
1398     300,                      /* filter_timeout */
1399     FALSE,                    /* body_only */
1400     FALSE,                    /* delivery_date_add */
1401     FALSE,                    /* envelope_to_add */
1402     FALSE,                    /* headers_only */
1403     FALSE,                    /* rcpt_include_affixes */
1404     FALSE,                    /* return_path_add */
1405     FALSE,                    /* return_output */
1406     FALSE,                    /* return_fail_output */
1407     FALSE,                    /* log_output */
1408     FALSE,                    /* log_fail_output */
1409     FALSE,                    /* log_defer_output */
1410     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1411                                  1 nor 0 so can detect unset */
1412 #ifdef EXPERIMENTAL_EVENT
1413    ,NULL                      /* event_action */
1414 #endif
1415 };
1416
1417 int     transport_count;
1418 uschar *transport_name          = NULL;
1419 int     transport_newlines;
1420 const uschar **transport_filter_argv  = NULL;
1421 int     transport_filter_timeout;
1422 BOOL    transport_filter_timed_out = FALSE;
1423 int     transport_write_timeout= 0;
1424
1425 tree_node  *tree_dns_fails     = NULL;
1426 tree_node  *tree_duplicates    = NULL;
1427 tree_node  *tree_nonrecipients = NULL;
1428 tree_node  *tree_unusable      = NULL;
1429
1430 BOOL    trusted_caller         = FALSE;
1431 BOOL    trusted_config         = TRUE;
1432 gid_t  *trusted_groups         = NULL;
1433 uid_t  *trusted_users          = NULL;
1434 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1435
1436 uschar *unknown_login          = NULL;
1437 uschar *unknown_username       = NULL;
1438 uschar *untrusted_set_sender   = NULL;
1439
1440 /*  A regex for matching a "From_" line in an incoming message, in the form
1441
1442     From ph10 Fri Jan  5 12:35 GMT 1996
1443
1444 which  the "mail" commands send to the MTA (undocumented, of course), or in
1445 the  form
1446
1447     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1448
1449 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1450 Because  of variations in time formats, just match up to the minutes. That
1451 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1452 so  just require one digit for hours and minutes. The weekday is also absent
1453 in  some forms. */
1454
1455 uschar *uucp_from_pattern      = US
1456    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1457    "(?:"                                          /* Non-extracting bracket */
1458    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1459    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1460    ")"                                            /* End alternation */
1461    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1462
1463 uschar *uucp_from_sender       = US"$1";
1464
1465 uschar *verify_mode            = NULL;
1466 uschar *version_copyright      =
1467  US"Copyright (c) University of Cambridge, 1995 - 2014\n"
1468    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2014";
1469 uschar *version_date           = US"?";
1470 uschar *version_cnumber        = US"????";
1471 uschar *version_string         = US"?";
1472
1473 uschar *warn_message_file      = NULL;
1474 int     warning_count          = 0;
1475 uschar *warnmsg_delay          = NULL;
1476 uschar *warnmsg_recipients     = NULL;
1477 BOOL    write_rejectlog        = TRUE;
1478
1479
1480 /*  End of globals.c */