src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.49 2006/02/14 14:55:37 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2006 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10 /* All the global variables are defined together in this one module, so
  11 that they are easy to find. */
  12
  13 #include "exim.h"
  14
  15
  16 /* The OSF1 linker puts out a worrying warning if any sections contain no
  17 executable code. It says
  18
  19 Warning: Linking some objects which contain exception information sections
  20         and some which do not. This may cause fatal runtime exception handling
  21         problems.
  22
  23 As this may cause people to worry needlessly, include a dummy function here
  24 to stop the message from appearing. Make it reference itself to stop picky
  25 compilers complaining that it is unused, and put in a dummy argument to stop
  26 even pickier compilers complaining about infinite loops. */
  27
  28 static void dummy(int x) { dummy(x-1); }
  29
  30
  31 /* Generic options for auths, all of which live inside auth_instance
  32 data blocks and hence have the opt_public flag set. */
  33
  34 optionlist optionlist_auths[] = {
  35   { "driver",        opt_stringptr | opt_public,
  36                  (void *)(offsetof(auth_instance, driver_name)) },
  37   { "public_name",   opt_stringptr | opt_public,
  38                  (void *)(offsetof(auth_instance, public_name)) },
  39   { "server_advertise_condition", opt_stringptr | opt_public,
  40                  (void *)(offsetof(auth_instance, advertise_condition))},
  41   { "server_debug_print", opt_stringptr | opt_public,
  42                  (void *)(offsetof(auth_instance, server_debug_string)) },
  43   { "server_mail_auth_condition", opt_stringptr | opt_public,
  44                  (void *)(offsetof(auth_instance, mail_auth_condition)) },
  45   { "server_set_id", opt_stringptr | opt_public,
  46                  (void *)(offsetof(auth_instance, set_id)) }
  47 };
  48
  49 int     optionlist_auths_size = sizeof(optionlist_auths)/sizeof(optionlist);
  50
  51 /* An empty host aliases list. */
  52
  53 uschar *no_aliases             = NULL;
  54
  55
  56 /* For comments on these variables, see globals.h. I'm too idle to
  57 duplicate them here... */
  58
  59 #ifdef EXIM_PERL
  60 uschar *opt_perl_startup       = NULL;
  61 BOOL    opt_perl_at_start      = FALSE;
  62 BOOL    opt_perl_started       = FALSE;
  63 #endif
  64
  65 #ifdef EXPAND_DLFUNC
  66 tree_node *dlobj_anchor        = NULL;
  67 #endif
  68
  69 #ifdef LOOKUP_IBASE
  70 uschar *ibase_servers          = NULL;
  71 #endif
  72
  73 #ifdef LOOKUP_LDAP
  74 uschar *eldap_default_servers  = NULL;
  75 int     eldap_version          = -1;
  76 #endif
  77
  78 #ifdef LOOKUP_MYSQL
  79 uschar *mysql_servers          = NULL;
  80 #endif
  81
  82 #ifdef LOOKUP_ORACLE
  83 uschar *oracle_servers         = NULL;
  84 #endif
  85
  86 #ifdef LOOKUP_PGSQL
  87 uschar *pgsql_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 BOOL    tls_active             = -1;
 103 BOOL    tls_certificate_verified = FALSE;
 104 uschar *tls_cipher             = NULL;
 105 BOOL    tls_on_connect         = FALSE;
 106 uschar *tls_on_connect_ports   = NULL;
 107 uschar *tls_peerdn             = NULL;
 108
 109 #ifdef SUPPORT_TLS
 110 const pcre *regex_STARTTLS     = NULL;
 111 uschar *tls_advertise_hosts    = NULL;    /* This is deliberate */
 112 uschar *tls_certificate        = NULL;
 113 uschar *tls_crl                = NULL;
 114 uschar *tls_dhparam            = NULL;
 115 BOOL    tls_offered            = FALSE;
 116 uschar *tls_privatekey         = NULL;
 117 BOOL    tls_remember_esmtp     = FALSE;
 118 uschar *tls_require_ciphers    = NULL;
 119 uschar *tls_try_verify_hosts   = NULL;
 120 uschar *tls_verify_certificates= NULL;
 121 uschar *tls_verify_hosts       = NULL;
 122 #endif
 123
 124
 125 /* Input-reading functions for messages, so we can use special ones for
 126 incoming TCP/IP. The defaults use stdin. We never need these for any
 127 stand-alone tests. */
 128
 129 #ifndef STAND_ALONE
 130 int (*receive_getc)(void)      = stdin_getc;
 131 int (*receive_ungetc)(int)     = stdin_ungetc;
 132 int (*receive_feof)(void)      = stdin_feof;
 133 int (*receive_ferror)(void)    = stdin_ferror;
 134 #endif
 135
 136
 137 /* List of per-address expansion variables for clearing and saving/restoring
 138 when verifying one address while routing/verifying another. We have to have
 139 the size explicit, because it is referenced from more than one module. */
 140
 141 uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 142   &deliver_address_data,
 143   &deliver_domain,
 144   &deliver_domain_data,
 145   &deliver_domain_orig,
 146   &deliver_domain_parent,
 147   &deliver_localpart,
 148   &deliver_localpart_data,
 149   &deliver_localpart_orig,
 150   &deliver_localpart_parent,
 151   &deliver_localpart_prefix,
 152   &deliver_localpart_suffix,
 153   (uschar **)(&deliver_recipients),
 154   &deliver_host,
 155   &deliver_home,
 156   &address_file,
 157   &address_pipe,
 158   &self_hostname,
 159   NULL };
 160
 161 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 162
 163 /* General global variables */
 164
 165 tree_node *acl_anchor          = NULL;
 166 uschar *acl_not_smtp           = NULL;
 167 #ifdef WITH_CONTENT_SCAN
 168 uschar *acl_not_smtp_mime      = NULL;
 169 #endif
 170 uschar *acl_smtp_auth          = NULL;
 171 uschar *acl_smtp_connect       = NULL;
 172 uschar *acl_smtp_data          = NULL;
 173 uschar *acl_smtp_etrn          = NULL;
 174 uschar *acl_smtp_expn          = NULL;
 175 uschar *acl_smtp_helo          = NULL;
 176 uschar *acl_smtp_mail          = NULL;
 177 uschar *acl_smtp_mailauth      = NULL;
 178 #ifdef WITH_CONTENT_SCAN
 179 uschar *acl_smtp_mime          = NULL;
 180 #endif
 181 uschar *acl_smtp_predata       = NULL;
 182 uschar *acl_smtp_quit          = NULL;
 183 uschar *acl_smtp_rcpt          = NULL;
 184 uschar *acl_smtp_starttls      = NULL;
 185 uschar *acl_smtp_vrfy          = NULL;
 186 BOOL    acl_temp_details       = FALSE;
 187 uschar *acl_var[ACL_CVARS + ACL_MVARS];
 188 uschar *acl_verify_message     = NULL;
 189 header_line *acl_warn_headers  = NULL;
 190 string_item *acl_warn_logged   = NULL;
 191
 192 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 193 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 194
 195 uschar *acl_wherenames[]       = { US"RCPT",
 196                                    US"MAIL",
 197                                    US"PREDATA",
 198                                    US"MIME",
 199                                    US"DATA",
 200                                    US"non-SMTP",
 201                                    US"AUTH",
 202                                    US"connection",
 203                                    US"ETRN",
 204                                    US"EXPN",
 205                                    US"EHLO or HELO",
 206                                    US"MAILAUTH",
 207                                    US"QUIT",
 208                                    US"STARTTLS",
 209                                    US"VRFY"
 210                                  };
 211
 212 int     acl_wherecodes[]       = { 550,     /* RCPT */
 213                                    550,     /* MAIL */
 214                                    550,     /* PREDATA */
 215                                    550,     /* MIME */
 216                                    550,     /* DATA */
 217                                    0,       /* not SMTP; not relevant */
 218                                    503,     /* AUTH */
 219                                    550,     /* connect */
 220                                    458,     /* ETRN */
 221                                    550,     /* EXPN */
 222                                    550,     /* HELO/EHLO */
 223                                    0,       /* MAILAUTH; not relevant */
 224                                    0,       /* QUIT; not relevant */
 225                                    550,     /* STARTTLS */
 226                                    252      /* VRFY */
 227                                  };
 228
 229 BOOL    active_local_from_check = FALSE;
 230 BOOL    active_local_sender_retain = FALSE;
 231 BOOL    accept_8bitmime        = FALSE;
 232 address_item  *addr_duplicate  = NULL;
 233
 234 address_item address_defaults = {
 235   NULL,                 /* next */
 236   NULL,                 /* parent */
 237   NULL,                 /* first */
 238   NULL,                 /* dupof */
 239   NULL,                 /* start_router */
 240   NULL,                 /* router */
 241   NULL,                 /* transport */
 242   NULL,                 /* host_list */
 243   NULL,                 /* host_used */
 244   NULL,                 /* fallback_hosts */
 245   NULL,                 /* reply */
 246   NULL,                 /* retries */
 247   NULL,                 /* address */
 248   NULL,                 /* unique */
 249   NULL,                 /* cc_local_part */
 250   NULL,                 /* lc_local_part */
 251   NULL,                 /* local_part */
 252   NULL,                 /* prefix */
 253   NULL,                 /* suffix */
 254   NULL,                 /* domain */
 255   NULL,                 /* address_retry_key */
 256   NULL,                 /* domain_retry_key */
 257   NULL,                 /* current_dir */
 258   NULL,                 /* home_dir */
 259   NULL,                 /* message */
 260   NULL,                 /* user_message */
 261   NULL,                 /* onetime_parent */
 262   NULL,                 /* pipe_expandn */
 263   NULL,                 /* return_filename */
 264   NULL,                 /* self_hostname */
 265   NULL,                 /* shadow_message */
 266   #ifdef SUPPORT_TLS
 267   NULL,                 /* cipher */
 268   NULL,                 /* peerdn */
 269   #endif
 270   (uid_t)(-1),          /* uid */
 271   (gid_t)(-1),          /* gid */
 272   0,                    /* flags */
 273   { 0 },                /* domain_cache - any larger array should be zeroed */
 274   { 0 },                /* localpart_cache - ditto */
 275   -1,                   /* mode */
 276   0,                    /* more_errno */
 277   ERRNO_UNKNOWNERROR,   /* basic_errno */
 278   0,                    /* child_count */
 279   -1,                   /* return_file */
 280   SPECIAL_NONE,         /* special_action */
 281   DEFER,                /* transport_return */
 282   {                     /* fields that are propagated to children */
 283     NULL,               /* address_data */
 284     NULL,               /* domain_data */
 285     NULL,               /* localpart_data */
 286     NULL,               /* errors_address */
 287     NULL,               /* extra_headers */
 288     NULL,               /* remove_headers */
 289 #ifdef EXPERIMENTAL_SRS
 290     NULL,               /* srs_sender */
 291 #endif
 292   }
 293 };
 294
 295 uschar *address_file           = NULL;
 296 uschar *address_pipe           = NULL;
 297 BOOL    address_test_mode      = FALSE;
 298 tree_node *addresslist_anchor  = NULL;
 299 int     addresslist_count      = 0;
 300 gid_t  *admin_groups           = NULL;
 301 BOOL    admin_user             = FALSE;
 302 BOOL    allow_domain_literals  = FALSE;
 303 BOOL    allow_mx_to_ip         = FALSE;
 304 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 305 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 306 BOOL    allow_utf8_domains     = FALSE;
 307 uschar *authenticated_id       = NULL;
 308 uschar *authenticated_sender   = NULL;
 309 BOOL    authentication_failed  = FALSE;
 310 auth_instance  *auths          = NULL;
 311 uschar *auth_advertise_hosts   = US"*";
 312 auth_instance auth_defaults    = {
 313     NULL,                      /* chain pointer */
 314     NULL,                      /* name */
 315     NULL,                      /* info */
 316     NULL,                      /* private options block pointer */
 317     NULL,                      /* driver_name */
 318     NULL,                      /* advertise_condition */
 319     NULL,                      /* public_name */
 320     NULL,                      /* set_id */
 321     NULL,                      /* server_mail_auth_condition */
 322     NULL,                      /* server_debug_string */
 323     FALSE,                     /* client */
 324     FALSE,                     /* server */
 325     FALSE                      /* advertised */
 326 };
 327
 328 uschar *auth_defer_msg         = US"reason not recorded";
 329 uschar *auth_defer_user_msg    = US"";
 330 uschar *auth_vars[AUTH_VARS];
 331 int     auto_thaw              = 0;
 332 #ifdef WITH_CONTENT_SCAN
 333 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 334 #endif
 335
 336 BOOL    background_daemon      = TRUE;
 337
 338 #if BASE_62 == 62
 339 uschar *base62_chars=
 340     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 341 #else
 342 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 343 #endif
 344
 345 uschar *bi_command             = NULL;
 346 uschar *big_buffer             = NULL;
 347 int     big_buffer_size        = BIG_BUFFER_SIZE;
 348 #ifdef EXPERIMENTAL_BRIGHTMAIL
 349 uschar *bmi_alt_location       = NULL;
 350 uschar *bmi_base64_tracker_verdict = NULL;
 351 uschar *bmi_base64_verdict     = NULL;
 352 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 353 int     bmi_deliver            = 1;
 354 int     bmi_run                = 0;
 355 uschar *bmi_verdicts           = NULL;
 356 #endif
 357 int     body_linecount         = 0;
 358 int     body_zerocount         = 0;
 359 uschar *bounce_message_file    = NULL;
 360 uschar *bounce_message_text    = NULL;
 361 uschar *bounce_recipient       = NULL;
 362 BOOL    bounce_return_body     = TRUE;
 363 BOOL    bounce_return_message  = TRUE;
 364 int     bounce_return_size_limit = 100*1024;
 365 uschar *bounce_sender_authentication = NULL;
 366 int     bsmtp_transaction_linecount = 0;
 367
 368 int     callout_cache_domain_positive_expire = 7*24*60*60;
 369 int     callout_cache_domain_negative_expire = 3*60*60;
 370 int     callout_cache_positive_expire = 24*60*60;
 371 int     callout_cache_negative_expire = 2*60*60;
 372 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 373 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$";
 374 int     check_log_inodes       = 0;
 375 int     check_log_space        = 0;
 376 BOOL    check_rfc2047_length   = TRUE;
 377 int     check_spool_inodes     = 0;
 378 int     check_spool_space      = 0;
 379 int     clmacro_count          = 0;
 380 uschar *clmacros[MAX_CLMACROS];
 381 BOOL    config_changed         = FALSE;
 382 FILE   *config_file            = NULL;
 383 uschar *config_filename        = NULL;
 384 int     config_lineno          = 0;
 385 #ifdef CONFIGURE_GROUP
 386 gid_t   config_gid             = CONFIGURE_GROUP;
 387 #endif
 388 uschar *config_main_filelist   = US CONFIGURE_FILE
 389                          "\0<-----------Space to patch configure_filename->";
 390 uschar *config_main_filename   = NULL;
 391
 392 #ifdef CONFIGURE_OWNER
 393 uid_t   config_uid             = CONFIGURE_OWNER;
 394 #endif
 395
 396 int     connection_max_messages= -1;
 397 uschar *continue_hostname      = NULL;
 398 uschar *continue_host_address  = NULL;
 399 BOOL    continue_more          = FALSE;
 400 int     continue_sequence      = 1;
 401 uschar *continue_transport     = NULL;
 402
 403 uschar *csa_status             = NULL;
 404
 405 BOOL    daemon_listen          = FALSE;
 406 uschar *daemon_smtp_port       = US"smtp";
 407 int     daemon_startup_retries = 9;
 408 int     daemon_startup_sleep   = 30;
 409 BOOL    debug_daemon           = FALSE;
 410 int     debug_fd               = -1;
 411 FILE   *debug_file             = NULL;
 412 bit_table debug_options[]      = {
 413   { US"acl",            D_acl },
 414   { US"all",            D_all },
 415   { US"auth",           D_auth },
 416   { US"deliver",        D_deliver },
 417   { US"dns",            D_dns },
 418   { US"dnsbl",          D_dnsbl },
 419   { US"exec",           D_exec },
 420   { US"expand",         D_expand },
 421   { US"filter",         D_filter },
 422   { US"hints_lookup",   D_hints_lookup },
 423   { US"host_lookup",    D_host_lookup },
 424   { US"ident",          D_ident },
 425   { US"interface",      D_interface },
 426   { US"lists",          D_lists },
 427   { US"load",           D_load },
 428   { US"local_scan",     D_local_scan },
 429   { US"lookup",         D_lookup },
 430   { US"memory",         D_memory },
 431   { US"pid",            D_pid },
 432   { US"process_info",   D_process_info },
 433   { US"queue_run",      D_queue_run },
 434   { US"receive",        D_receive },
 435   { US"resolver",       D_resolver },
 436   { US"retry",          D_retry },
 437   { US"rewrite",        D_rewrite },
 438   { US"route",          D_route },
 439   { US"timestamp",      D_timestamp },
 440   { US"tls",            D_tls },
 441   { US"transport",      D_transport },
 442   { US"uid",            D_uid },
 443   { US"verify",         D_verify }
 444 };
 445 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 446 unsigned int debug_selector    = 0;
 447 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 448 uschar *delay_warning_condition= US"${if match{$h_precedence:}{(?i)bulk|list|junk}{no}{yes}}";
 449 BOOL    delivery_date_remove   = TRUE;
 450 uschar *deliver_address_data   = NULL;
 451 int     deliver_datafile       = -1;
 452 uschar *deliver_domain         = NULL;
 453 uschar *deliver_domain_data    = NULL;
 454 uschar *deliver_domain_orig    = NULL;
 455 uschar *deliver_domain_parent  = NULL;
 456 BOOL    deliver_drop_privilege = FALSE;
 457 BOOL    deliver_firsttime      = FALSE;
 458 BOOL    deliver_force          = FALSE;
 459 BOOL    deliver_freeze         = FALSE;
 460 int     deliver_frozen_at      = 0;
 461 uschar *deliver_home           = NULL;
 462 uschar *deliver_host           = NULL;
 463 uschar *deliver_host_address   = NULL;
 464 uschar *deliver_in_buffer      = NULL;
 465 ino_t   deliver_inode          = 0;
 466 uschar *deliver_localpart      = NULL;
 467 uschar *deliver_localpart_data = NULL;
 468 uschar *deliver_localpart_orig = NULL;
 469 uschar *deliver_localpart_parent = NULL;
 470 uschar *deliver_localpart_prefix = NULL;
 471 uschar *deliver_localpart_suffix = NULL;
 472 BOOL    deliver_force_thaw     = FALSE;
 473 BOOL    deliver_manual_thaw    = FALSE;
 474 uschar *deliver_out_buffer     = NULL;
 475 int     deliver_queue_load_max = -1;
 476 address_item  *deliver_recipients = NULL;
 477 uschar *deliver_selectstring   = NULL;
 478 BOOL    deliver_selectstring_regex = FALSE;
 479 uschar *deliver_selectstring_sender = NULL;
 480 BOOL    deliver_selectstring_sender_regex = FALSE;
 481 #ifdef WITH_OLD_DEMIME
 482 int     demime_errorlevel      = 0;
 483 int     demime_ok              = 0;
 484 uschar *demime_reason          = NULL;
 485 #endif
 486 BOOL    disable_ipv6           = FALSE;
 487 BOOL    disable_logging        = FALSE;
 488
 489 #ifdef EXPERIMENTAL_DOMAINKEYS
 490 uschar *dk_signing_domain      = NULL;
 491 uschar *dk_signing_selector    = NULL;
 492 int     dk_do_verify           = 0;
 493 #endif
 494
 495 uschar *dns_again_means_nonexist = NULL;
 496 int     dns_csa_search_limit   = 5;
 497 BOOL    dns_csa_use_reverse    = TRUE;
 498 uschar *dns_ipv4_lookup        = NULL;
 499 int     dns_retrans            = 0;
 500 int     dns_retry              = 0;
 501 uschar *dnslist_domain         = NULL;
 502 uschar *dnslist_text           = NULL;
 503 uschar *dnslist_value          = NULL;
 504 tree_node *domainlist_anchor   = NULL;
 505 int     domainlist_count       = 0;
 506 BOOL    dont_deliver           = FALSE;
 507 BOOL    dot_ends               = TRUE;
 508 BOOL    drop_cr                = FALSE;         /* No longer used */
 509
 510 BOOL    enable_dollar_recipients = FALSE;
 511 BOOL    envelope_to_remove     = TRUE;
 512 int     errno_quota            = ERRNO_QUOTA;
 513 uschar *errors_copy            = NULL;
 514 int     error_handling         = ERRORS_SENDER;
 515 uschar *errors_reply_to        = NULL;
 516 int     errors_sender_rc       = EXIT_FAILURE;
 517
 518 gid_t   exim_gid               = EXIM_GID;
 519 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 520 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 521                         "\0<---------------Space to patch exim_path->";
 522 uid_t   exim_uid               = EXIM_UID;
 523 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 524 int     expand_forbid          = 0;
 525 int     expand_nlength[EXPAND_MAXN+1];
 526 int     expand_nmax            = -1;
 527 uschar *expand_nstring[EXPAND_MAXN+1];
 528 BOOL    expand_string_forcedfail = FALSE;
 529 uschar *expand_string_message;
 530 BOOL    extract_addresses_remove_arguments = TRUE;
 531 uschar *extra_local_interfaces = NULL;
 532
 533 int     fake_response          = OK;
 534 uschar *fake_response_text     = US"Your message has been rejected but is being kept for evaluation.\nIf it was a legitimate message, it may still be delivered to the target recipient(s).";
 535 int     filter_n[FILTER_VARIABLE_COUNT];
 536 BOOL    filter_running         = FALSE;
 537 int     filter_sn[FILTER_VARIABLE_COUNT];
 538 int     filter_test            = FTEST_NONE;
 539 uschar *filter_test_sfile      = NULL;
 540 uschar *filter_test_ufile      = NULL;
 541 uschar *filter_thisaddress     = NULL;
 542 int     finduser_retries       = 0;
 543 #ifdef WITH_OLD_DEMIME
 544 uschar *found_extension        = NULL;
 545 #endif
 546 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 547 uschar *freeze_tell            = NULL;
 548 uschar *freeze_tell_config     = NULL;
 549 uschar *fudged_queue_times     = US"";
 550
 551 uschar *gecos_name             = NULL;
 552 uschar *gecos_pattern          = NULL;
 553 rewrite_rule  *global_rewrite_rules = NULL;
 554
 555 uschar *headers_charset        = US HEADERS_CHARSET;
 556 int     header_insert_maxlen   = 64 * 1024;
 557 header_line  *header_last      = NULL;
 558 header_line  *header_list      = NULL;
 559 int     header_maxsize         = HEADER_MAXSIZE;
 560 int     header_line_maxsize    = 0;
 561
 562 header_name header_names[] = {
 563   { US"bcc",            3, TRUE,  htype_bcc },
 564   { US"cc",             2, TRUE,  htype_cc },
 565   { US"date",           4, TRUE,  htype_date },
 566   { US"delivery-date", 13, FALSE, htype_delivery_date },
 567   { US"envelope-to",   11, FALSE, htype_envelope_to },
 568   { US"from",           4, TRUE,  htype_from },
 569   { US"message-id",    10, TRUE,  htype_id },
 570   { US"received",       8, FALSE, htype_received },
 571   { US"reply-to",       8, FALSE, htype_reply_to },
 572   { US"return-path",   11, FALSE, htype_return_path },
 573   { US"sender",         6, TRUE,  htype_sender },
 574   { US"subject",        7, FALSE, htype_subject },
 575   { US"to",             2, TRUE,  htype_to }
 576 };
 577
 578 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 579
 580 BOOL    header_rewritten       = FALSE;
 581 uschar *helo_accept_junk_hosts = NULL;
 582 uschar *helo_allow_chars       = US"";
 583 uschar *helo_lookup_domains    = US"@ : @[]";
 584 uschar *helo_try_verify_hosts  = NULL;
 585 BOOL    helo_verified          = FALSE;
 586 BOOL    helo_verify_failed     = FALSE;
 587 uschar *helo_verify_hosts      = NULL;
 588 uschar *hex_digits             = US"0123456789abcdef";
 589 uschar *hold_domains           = NULL;
 590 BOOL    host_checking          = FALSE;
 591 BOOL    host_checking_callout  = FALSE;
 592 uschar *host_data              = NULL;
 593 BOOL    host_find_failed_syntax= FALSE;
 594 uschar *host_lookup            = NULL;
 595 BOOL    host_lookup_deferred   = FALSE;
 596 BOOL    host_lookup_failed     = FALSE;
 597 uschar *host_lookup_order      = US"bydns:byaddr";
 598 uschar *host_lookup_msg        = US"";
 599 int     host_number            = 0;
 600 uschar *host_number_string     = NULL;
 601 uschar *host_reject_connection = NULL;
 602 tree_node *hostlist_anchor     = NULL;
 603 int     hostlist_count         = 0;
 604 uschar *hosts_treat_as_local   = NULL;
 605 uschar *hosts_connection_nolog = NULL;
 606
 607 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 608 BOOL    ignore_fromline_local  = FALSE;
 609 uschar *ignore_fromline_hosts  = NULL;
 610 uschar *interface_address      = NULL;
 611 int     interface_port         = -1;
 612 BOOL    is_inetd               = FALSE;
 613
 614 int     journal_fd             = -1;
 615
 616 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 617
 618 uschar *eldap_dn               = NULL;
 619 int     load_average           = -2;
 620 BOOL    local_error_message    = FALSE;
 621 BOOL    local_from_check       = TRUE;
 622 uschar *local_from_prefix      = NULL;
 623 uschar *local_from_suffix      = NULL;
 624
 625 #if HAVE_IPV6
 626 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 627 #else
 628 uschar *local_interfaces       = US"0.0.0.0";
 629 #endif
 630
 631 uschar *local_scan_data        = NULL;
 632 int     local_scan_timeout     = 5*60;
 633 BOOL    local_sender_retain    = FALSE;
 634 gid_t   local_user_gid         = (gid_t)(-1);
 635 uid_t   local_user_uid         = (uid_t)(-1);
 636
 637 tree_node *localpartlist_anchor= NULL;
 638 int     localpartlist_count    = 0;
 639 uschar *log_buffer             = NULL;
 640 unsigned int log_extra_selector = LX_default;
 641 uschar *log_file_path          = US LOG_FILE_PATH
 642                            "\0<--------------Space to patch log_file_path->";
 643
 644 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 645 are the ones that get put into log_write_selector. They can be used in calls to
 646 log_write() to test for the bit. The options with LX_xxx identifiers have
 647 values greater than 0x80000000 and are put int log_extra_selector (without the
 648 top bit). They are never used in calls to log_write(), but are tested
 649 independently. This separation became necessary when the number of log
 650 selectors was getting close to filling a 32-bit word. */
 651
 652 bit_table log_options[]        = {
 653   { US"acl_warn_skipped",             LX_acl_warn_skipped },
 654   { US"address_rewrite",              L_address_rewrite },
 655   { US"all",                          L_all },
 656   { US"all_parents",                  L_all_parents },
 657   { US"arguments",                    LX_arguments },
 658   { US"connection_reject",            L_connection_reject },
 659   { US"delay_delivery",               L_delay_delivery },
 660   { US"deliver_time",                 LX_deliver_time },
 661   { US"delivery_size",                LX_delivery_size },
 662   { US"dnslist_defer",                L_dnslist_defer },
 663   { US"etrn",                         L_etrn },
 664   { US"host_lookup_failed",           L_host_lookup_failed },
 665   { US"ident_timeout",                LX_ident_timeout },
 666   { US"incoming_interface",           LX_incoming_interface },
 667   { US"incoming_port",                LX_incoming_port },
 668   { US"lost_incoming_connection",     L_lost_incoming_connection },
 669   { US"outgoing_port",                LX_outgoing_port },
 670   { US"queue_run",                    L_queue_run },
 671   { US"queue_time",                   LX_queue_time },
 672   { US"queue_time_overall",           LX_queue_time_overall },
 673   { US"received_recipients",          LX_received_recipients },
 674   { US"received_sender",              LX_received_sender },
 675   { US"rejected_header",              LX_rejected_header },
 676   { US"rejected_headers",             LX_rejected_header },
 677   { US"retry_defer",                  L_retry_defer },
 678   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 679   { US"sender_on_delivery",           LX_sender_on_delivery },
 680   { US"sender_verify_fail",           LX_sender_verify_fail },
 681   { US"size_reject",                  L_size_reject },
 682   { US"skip_delivery",                L_skip_delivery },
 683   { US"smtp_confirmation",            LX_smtp_confirmation },
 684   { US"smtp_connection",              L_smtp_connection },
 685   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 686   { US"smtp_protocol_error",          L_smtp_protocol_error },
 687   { US"smtp_syntax_error",            L_smtp_syntax_error },
 688   { US"subject",                      LX_subject },
 689   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 690   { US"tls_cipher",                   LX_tls_cipher },
 691   { US"tls_peerdn",                   LX_tls_peerdn },
 692   { US"unknown_in_list",              LX_unknown_in_list }
 693 };
 694
 695 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 696 unsigned int log_write_selector= L_default;
 697 uschar *log_selector_string    = NULL;
 698 FILE   *log_stderr             = NULL;
 699 BOOL    log_testing_mode       = FALSE;
 700 BOOL    log_timezone           = FALSE;
 701 uschar *login_sender_address   = NULL;
 702 int     lookup_open_max        = 25;
 703 uschar *lookup_value           = NULL;
 704
 705 macro_item  *macros            = NULL;
 706 uschar *mailstore_basename     = NULL;
 707 #ifdef WITH_CONTENT_SCAN
 708 uschar *malware_name           = NULL;  /* Virus Name */
 709 #endif
 710 int     max_username_length    = 0;
 711 int     message_age            = 0;
 712 uschar *message_body           = NULL;
 713 uschar *message_body_end       = NULL;
 714 int     message_body_size      = 0;
 715 int     message_body_visible   = 500;
 716 int     message_ended          = END_NOTSTARTED;
 717 uschar *message_headers        = NULL;
 718 uschar *message_id;
 719 uschar *message_id_domain      = NULL;
 720 uschar *message_id_text        = NULL;
 721 struct timeval message_id_tv   = { 0, 0 };
 722 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 723 uschar *message_id_external;
 724 int     message_linecount      = 0;
 725 BOOL    message_logs           = TRUE;
 726 int     message_size           = 0;
 727 uschar *message_size_limit     = US"50M";
 728 uschar  message_subdir[2]      = { 0, 0 };
 729 uschar *message_reference      = NULL;
 730
 731 /* MIME ACL expandables */
 732 #ifdef WITH_CONTENT_SCAN
 733 int     mime_anomaly_level     = 0;
 734 uschar *mime_anomaly_text      = NULL;
 735 uschar *mime_boundary          = NULL;
 736 uschar *mime_charset           = NULL;
 737 uschar *mime_content_description = NULL;
 738 uschar *mime_content_disposition = NULL;
 739 uschar *mime_content_id        = NULL;
 740 unsigned int mime_content_size = 0;
 741 uschar *mime_content_transfer_encoding = NULL;
 742 uschar *mime_content_type      = NULL;
 743 uschar *mime_decoded_filename  = NULL;
 744 uschar *mime_filename          = NULL;
 745 int     mime_is_multipart      = 0;
 746 int     mime_is_coverletter    = 0;
 747 int     mime_is_rfc822         = 0;
 748 int     mime_part_count        = -1;
 749 #endif
 750
 751 BOOL    mua_wrapper            = FALSE;
 752
 753 uid_t  *never_users            = NULL;
 754 #ifdef WITH_CONTENT_SCAN
 755 BOOL    no_mbox_unspool        = FALSE;
 756 #endif
 757 BOOL    no_multiline_responses = FALSE;
 758
 759 uid_t   original_euid;
 760 gid_t   originator_gid;
 761 uschar *originator_login       = NULL;
 762 uschar *originator_name        = NULL;
 763 uid_t   originator_uid;
 764 uschar *override_local_interfaces = NULL;
 765 uschar *override_pid_file_path = NULL;
 766
 767 BOOL    parse_allow_group      = FALSE;
 768 BOOL    parse_found_group      = FALSE;
 769 uschar *percent_hack_domains   = NULL;
 770 uschar *pid_file_path          = US PID_FILE_PATH
 771                            "\0<--------------Space to patch pid_file_path->";
 772 uschar *pipelining_advertise_hosts = US"*";
 773 BOOL    preserve_message_logs  = FALSE;
 774 uschar *primary_hostname       = NULL;
 775 BOOL    print_topbitchars      = FALSE;
 776 uschar  process_info[PROCESS_INFO_SIZE];
 777 uschar *process_log_path       = NULL;
 778 BOOL    prod_requires_admin    = TRUE;
 779 uschar *prvscheck_address      = NULL;
 780 uschar *prvscheck_keynum       = NULL;
 781 uschar *prvscheck_result       = NULL;
 782
 783
 784 uschar *qualify_domain_recipient = NULL;
 785 uschar *qualify_domain_sender  = NULL;
 786 BOOL    queue_2stage           = FALSE;
 787 uschar *queue_domains          = NULL;
 788 int     queue_interval         = -1;
 789 BOOL    queue_list_requires_admin = TRUE;
 790 BOOL    queue_only             = FALSE;
 791 uschar *queue_only_file        = NULL;
 792 int     queue_only_load        = -1;
 793 BOOL    queue_only_override    = TRUE;
 794 BOOL    queue_only_policy      = FALSE;
 795 BOOL    queue_run_first_delivery = FALSE;
 796 BOOL    queue_run_force        = FALSE;
 797 BOOL    queue_run_in_order     = FALSE;
 798 BOOL    queue_run_local        = FALSE;
 799 int     queue_run_max          = 5;
 800 pid_t   queue_run_pid          = (pid_t)0;
 801 int     queue_run_pipe         = -1;
 802 BOOL    queue_running          = FALSE;
 803 BOOL    queue_smtp             = FALSE;
 804 uschar *queue_smtp_domains     = NULL;
 805
 806 unsigned int random_seed       = 0;
 807 tree_node *ratelimiters_cmd    = NULL;
 808 tree_node *ratelimiters_conn   = NULL;
 809 tree_node *ratelimiters_mail   = NULL;
 810 uschar *raw_active_hostname    = NULL;
 811 uschar *raw_sender             = NULL;
 812 uschar **raw_recipients        = NULL;
 813 int     raw_recipients_count   = 0;
 814
 815 int     rcpt_count             = 0;
 816 int     rcpt_fail_count        = 0;
 817 int     rcpt_defer_count       = 0;
 818 gid_t   real_gid;
 819 uid_t   real_uid;
 820 BOOL    really_exim            = TRUE;
 821 BOOL    receive_call_bombout   = FALSE;
 822 int     receive_linecount      = 0;
 823 int     receive_messagecount   = 0;
 824 int     receive_timeout        = 0;
 825 int     received_count         = 0;
 826 uschar *received_for           = NULL;
 827
 828 /*  This is the default text for Received headers generated by Exim. The
 829 date  will be automatically added on the end. */
 830
 831 uschar *received_header_text   = US
 832      "Received: "
 833      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 834      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
 835      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 836      "by $primary_hostname "
 837      "${if def:received_protocol {with $received_protocol}} "
 838      #ifdef SUPPORT_TLS
 839      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 840      #endif
 841      "(Exim $version_number)\n\t"
 842      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
 843      "id $message_exim_id"
 844      "${if def:received_for {\n\tfor $received_for}}"
 845      "\0<---------------Space to patch received_header_text->";
 846
 847 int     received_headers_max   = 30;
 848 uschar *received_protocol      = NULL;
 849 int     received_time          = 0;
 850 uschar *recipient_data         = NULL;
 851 uschar *recipient_unqualified_hosts = NULL;
 852 uschar *recipient_verify_failure = NULL;
 853 int     recipients_count       = 0;
 854 BOOL    recipients_discarded   = FALSE;
 855 recipient_item  *recipients_list = NULL;
 856 int     recipients_list_max    = 0;
 857 int     recipients_max         = 0;
 858 BOOL    recipients_max_reject  = FALSE;
 859 const pcre *regex_AUTH         = NULL;
 860 const pcre *regex_check_dns_names = NULL;
 861 const pcre *regex_From         = NULL;
 862 const pcre *regex_IGNOREQUOTA  = NULL;
 863 const pcre *regex_PIPELINING   = NULL;
 864 const pcre *regex_SIZE         = NULL;
 865 const pcre *regex_ismsgid      = NULL;
 866 #ifdef WITH_CONTENT_SCAN
 867 uschar *regex_match_string     = NULL;
 868 #endif
 869 int     remote_delivery_count  = 0;
 870 int     remote_max_parallel    = 2;
 871 uschar *remote_sort_domains    = NULL;
 872 int     retry_data_expire      = 7*24*60*60;
 873 int     retry_interval_max     = 24*60*60;
 874 int     retry_maximum_timeout  = 0;        /* set from retry config */
 875 retry_config  *retries         = NULL;
 876 uschar *return_path            = NULL;
 877 BOOL    return_path_remove     = TRUE;
 878 int     rewrite_existflags     = 0;
 879 uschar *rfc1413_hosts          = US"*";
 880 int     rfc1413_query_timeout  = 30;
 881 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 882 uid_t   root_uid               = ROOT_UID;
 883
 884 router_instance  *routers  = NULL;
 885 router_instance  router_defaults = {
 886     NULL,                      /* chain pointer */
 887     NULL,                      /* name */
 888     NULL,                      /* info */
 889     NULL,                      /* private options block pointer */
 890     NULL,                      /* driver name */
 891
 892     NULL,                      /* address_data */
 893 #ifdef EXPERIMENTAL_BRIGHTMAIL
 894     NULL,                      /* bmi_rule */
 895 #endif
 896     NULL,                      /* cannot_route_message */
 897     NULL,                      /* condition */
 898     NULL,                      /* current_directory */
 899     NULL,                      /* debug_string */
 900     NULL,                      /* domains */
 901     NULL,                      /* errors_to */
 902     NULL,                      /* expand_gid */
 903     NULL,                      /* expand_uid */
 904     NULL,                      /* expand_more */
 905     NULL,                      /* expand_unseen */
 906     NULL,                      /* extra_headers */
 907     NULL,                      /* fallback_hosts */
 908     NULL,                      /* home_directory */
 909     NULL,                      /* ignore_target_hosts */
 910     NULL,                      /* local_parts */
 911     NULL,                      /* pass_router_name */
 912     NULL,                      /* prefix */
 913     NULL,                      /* redirect_router_name */
 914     NULL,                      /* remove_headers */
 915     NULL,                      /* require_files */
 916     NULL,                      /* router_home_directory */
 917     US"freeze",                /* self */
 918     NULL,                      /* senders */
 919     NULL,                      /* suffix */
 920     NULL,                      /* translate_ip_address */
 921     NULL,                      /* transport_name */
 922
 923     TRUE,                      /* address_test */
 924 #ifdef EXPERIMENTAL_BRIGHTMAIL
 925     FALSE,                     /* bmi_deliver_alternate */
 926     FALSE,                     /* bmi_deliver_default */
 927     FALSE,                     /* bmi_dont_deliver */
 928 #endif
 929     TRUE,                      /* expn */
 930     FALSE,                     /* caseful_local_part */
 931     FALSE,                     /* check_local_user */
 932     FALSE,                     /* disable_logging */
 933     FALSE,                     /* fail_verify_recipient */
 934     FALSE,                     /* fail_verify_sender */
 935     FALSE,                     /* gid_set */
 936     FALSE,                     /* initgroups */
 937     TRUE_UNSET,                /* log_as_local */
 938     TRUE,                      /* more */
 939     FALSE,                     /* pass_on_timeout */
 940     FALSE,                     /* prefix_optional */
 941     TRUE,                      /* repeat_use */
 942     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
 943     FALSE,                     /* same_domain_copy_routing */
 944     FALSE,                     /* self_rewrite */
 945     FALSE,                     /* suffix_optional */
 946     FALSE,                     /* verify_only */
 947     TRUE,                      /* verify_recipient */
 948     TRUE,                      /* verify_sender */
 949     FALSE,                     /* uid_set */
 950     FALSE,                     /* unseen */
 951
 952     self_freeze,               /* self_code */
 953     (uid_t)(-1),               /* uid */
 954     (gid_t)(-1),               /* gid */
 955
 956     NULL,                      /* fallback_hostlist */
 957     NULL,                      /* transport instance */
 958     NULL,                      /* pass_router */
 959     NULL                       /* redirect_router */
 960 };
 961
 962 ip_address_item *running_interfaces = NULL;
 963 BOOL    running_in_test_harness = FALSE;
 964
 965 /* This is a weird one. The following string gets patched in the binary by the
 966 script that sets up a copy of Exim for running in the test harness. It seems
 967 that compilers are now clever, and share constant strings if they can.
 968 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
 969 make use of the end of this string in order to save space. So the patching then
 970 wrecks this. We default this optimization by adding some additional characters
 971 onto the end of the string. */
 972
 973 uschar *running_status         = US">>>running<<<" "\0EXTRA";
 974
 975 int     runrc                  = 0;
 976
 977 uschar *search_error_message   = NULL;
 978 BOOL    search_find_defer      = FALSE;
 979 uschar *self_hostname          = NULL;
 980 uschar *sender_address         = NULL;
 981 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
 982 uschar *sender_address_data    = NULL;
 983 BOOL    sender_address_forced  = FALSE;
 984 uschar *sender_address_unrewritten = NULL;
 985 uschar *sender_data            = NULL;
 986 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
 987 uschar *sender_fullhost        = NULL;
 988 uschar *sender_helo_name       = NULL;
 989 uschar **sender_host_aliases   = &no_aliases;
 990 uschar *sender_host_address    = NULL;
 991 uschar *sender_host_authenticated = NULL;
 992 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
 993 uschar *sender_host_name       = NULL;
 994 int     sender_host_port       = 0;
 995 BOOL    sender_host_notsocket  = FALSE;
 996 BOOL    sender_host_unknown    = FALSE;
 997 uschar *sender_ident           = NULL;
 998 BOOL    sender_local           = FALSE;
 999 BOOL    sender_name_forced     = FALSE;
1000 uschar *sender_rate            = NULL;
1001 uschar *sender_rate_limit      = NULL;
1002 uschar *sender_rate_period     = NULL;
1003 uschar *sender_rcvhost         = NULL;
1004 BOOL    sender_set_untrusted   = FALSE;
1005 uschar *sender_unqualified_hosts = NULL;
1006 uschar *sender_verify_failure = NULL;
1007 address_item *sender_verified_list  = NULL;
1008 address_item *sender_verified_failed = NULL;
1009 int     sender_verified_rc     = -1;
1010 BOOL    sender_verified_responded = FALSE;
1011 volatile  BOOL sigalrm_seen    = FALSE;
1012 uschar **sighup_argv           = NULL;
1013 int     smtp_accept_count      = 0;
1014 BOOL    smtp_accept_keepalive  = TRUE;
1015 int     smtp_accept_max        = 20;
1016 int     smtp_accept_max_nonmail= 10;
1017 uschar *smtp_accept_max_nonmail_hosts = US"*";
1018 int     smtp_accept_max_per_connection = 1000;
1019 uschar *smtp_accept_max_per_host = NULL;
1020 int     smtp_accept_queue      = 0;
1021 int     smtp_accept_queue_per_connection = 10;
1022 int     smtp_accept_reserve    = 0;
1023 uschar *smtp_active_hostname   = NULL;
1024 BOOL    smtp_authenticated     = FALSE;
1025 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1026                              "Exim $version_number $tod_full"
1027                              "\0<---------------Space to patch smtp_banner->";
1028 BOOL    smtp_batched_input     = FALSE;
1029 BOOL    smtp_check_spool_space = TRUE;
1030 uschar *smtp_cmd_argument      = NULL;
1031 uschar *smtp_cmd_buffer        = NULL;
1032 int     smtp_connect_backlog   = 20;
1033 double  smtp_delay_mail        = 0.0;
1034 double  smtp_delay_rcpt        = 0.0;
1035 BOOL    smtp_enforce_sync      = TRUE;
1036 FILE   *smtp_in                = NULL;
1037 BOOL    smtp_input             = FALSE;
1038 int     smtp_load_reserve      = -1;
1039 int     smtp_mailcmd_count     = 0;
1040 FILE   *smtp_out               = NULL;
1041 uschar *smtp_etrn_command      = NULL;
1042 BOOL    smtp_etrn_serialize    = TRUE;
1043 int     smtp_max_synprot_errors= 3;
1044 int     smtp_max_unknown_commands = 3;
1045 uschar *smtp_ratelimit_hosts   = NULL;
1046 uschar *smtp_ratelimit_mail    = NULL;
1047 uschar *smtp_ratelimit_rcpt    = NULL;
1048 uschar *smtp_read_error        = US"";
1049 int     smtp_receive_timeout   = 5*60;
1050 uschar *smtp_reserve_hosts     = NULL;
1051 BOOL    smtp_return_error_details = FALSE;
1052 int     smtp_rlm_base          = 0;
1053 double  smtp_rlm_factor        = 0.0;
1054 int     smtp_rlm_limit         = 0;
1055 int     smtp_rlm_threshold     = INT_MAX;
1056 int     smtp_rlr_base          = 0;
1057 double  smtp_rlr_factor        = 0.0;
1058 int     smtp_rlr_limit         = 0;
1059 int     smtp_rlr_threshold     = INT_MAX;
1060 BOOL    smtp_use_pipelining    = FALSE;
1061 BOOL    smtp_use_size          = FALSE;
1062
1063 #ifdef WITH_CONTENT_SCAN
1064 uschar *spamd_address          = US"127.0.0.1 783";
1065 uschar *spam_bar               = NULL;
1066 uschar *spam_report            = NULL;
1067 uschar *spam_score             = NULL;
1068 uschar *spam_score_int         = NULL;
1069 #endif
1070 #ifdef EXPERIMENTAL_SPF
1071 uschar *spf_header_comment     = NULL;
1072 uschar *spf_received           = NULL;
1073 uschar *spf_result             = NULL;
1074 uschar *spf_smtp_comment       = NULL;
1075 #endif
1076
1077 BOOL    split_spool_directory  = FALSE;
1078 uschar *spool_directory        = US SPOOL_DIRECTORY
1079                            "\0<--------------Space to patch spool_directory->";
1080 #ifdef EXPERIMENTAL_SRS
1081 uschar *srs_config             = NULL;
1082 uschar *srs_db_address         = NULL;
1083 uschar *srs_db_key             = NULL;
1084 int     srs_hashlength         = 6;
1085 int     srs_hashmin            = -1;
1086 int     srs_maxage             = 31;
1087 uschar *srs_orig_recipient     = NULL;
1088 uschar *srs_orig_sender        = NULL;
1089 uschar *srs_recipient          = NULL;
1090 uschar *srs_secrets            = NULL;
1091 uschar *srs_status             = NULL;
1092 BOOL    srs_usehash            = TRUE;
1093 BOOL    srs_usetimestamp       = TRUE;
1094 #endif
1095 int     string_datestamp_offset= -1;
1096 BOOL    strip_excess_angle_brackets = FALSE;
1097 BOOL    strip_trailing_dot     = FALSE;
1098 uschar *submission_domain      = NULL;
1099 BOOL    submission_mode        = FALSE;
1100 uschar *submission_name        = NULL;
1101 BOOL    suppress_local_fixups  = FALSE;
1102 BOOL    synchronous_delivery   = FALSE;
1103 BOOL    syslog_duplication     = TRUE;
1104 int     syslog_facility        = LOG_MAIL;
1105 uschar *syslog_processname     = US"exim";
1106 BOOL    syslog_timestamp       = TRUE;
1107 uschar *system_filter          = NULL;
1108
1109 uschar *system_filter_directory_transport = NULL;
1110 uschar *system_filter_file_transport = NULL;
1111 uschar *system_filter_pipe_transport = NULL;
1112 uschar *system_filter_reply_transport = NULL;
1113
1114 gid_t   system_filter_gid      = 0;
1115 BOOL    system_filter_gid_set  = FALSE;
1116 uid_t   system_filter_uid      = 0;
1117 BOOL    system_filter_uid_set  = FALSE;
1118 BOOL    system_filtering       = FALSE;
1119
1120 BOOL    tcp_nodelay            = TRUE;
1121 int     thismessage_size_limit = 0;
1122 int     timeout_frozen_after   = 0;
1123 BOOL    timestamps_utc         = FALSE;
1124
1125 transport_instance  *transports = NULL;
1126
1127 transport_instance  transport_defaults = {
1128     NULL,                     /* chain pointer */
1129     NULL,                     /* name */
1130     NULL,                     /* info */
1131     NULL,                     /* private options block pointer */
1132     NULL,                     /* driver name */
1133     NULL,                     /* setup entry point */
1134     1,                        /* batch_max */
1135     NULL,                     /* batch_id */
1136     NULL,                     /* home_dir */
1137     NULL,                     /* current_dir */
1138     TRUE,                     /* multi-domain */
1139     FALSE,                    /* overrides_hosts */
1140     100,                      /* max_addresses */
1141     500,                      /* connection_max_messages */
1142     FALSE,                    /* deliver_as_creator */
1143     FALSE,                    /* disable_logging */
1144     FALSE,                    /* initgroups */
1145     FALSE,                    /* uid_set */
1146     FALSE,                    /* gid_set */
1147     (uid_t)(-1),              /* uid */
1148     (gid_t)(-1),              /* gid */
1149     NULL,                     /* expand_uid */
1150     NULL,                     /* expand_gid */
1151     NULL,                     /* warn_message */
1152     NULL,                     /* shadow */
1153     NULL,                     /* shadow_condition */
1154     NULL,                     /* filter_command */
1155     NULL,                     /* add_headers */
1156     NULL,                     /* remove_headers */
1157     NULL,                     /* return_path */
1158     NULL,                     /* debug_string */
1159     NULL,                     /* message_size_limit */
1160     NULL,                     /* headers_rewrite */
1161     NULL,                     /* rewrite_rules */
1162     0,                        /* rewrite_existflags */
1163     300,                      /* filter_timeout */
1164     FALSE,                    /* body_only */
1165     FALSE,                    /* delivery_date_add */
1166     FALSE,                    /* envelope_to_add */
1167     FALSE,                    /* headers_only */
1168     FALSE,                    /* rcpt_include_affixes */
1169     FALSE,                    /* return_path_add */
1170     FALSE,                    /* return_output */
1171     FALSE,                    /* return_fail_output */
1172     FALSE,                    /* log_output */
1173     FALSE,                    /* log_fail_output */
1174     FALSE,                    /* log_defer_output */
1175     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1176                                  1 nor 0 so can detect unset */
1177 };
1178
1179 int     transport_count;
1180 uschar **transport_filter_argv  = NULL;
1181 int     transport_filter_timeout;
1182 BOOL    transport_filter_timed_out = FALSE;
1183 int     transport_write_timeout= 0;
1184
1185 tree_node  *tree_dns_fails     = NULL;
1186 tree_node  *tree_duplicates    = NULL;
1187 tree_node  *tree_nonrecipients = NULL;
1188 tree_node  *tree_unusable      = NULL;
1189
1190 BOOL    trusted_caller         = FALSE;
1191 gid_t  *trusted_groups         = NULL;
1192 uid_t  *trusted_users          = NULL;
1193 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1194
1195 uschar *unknown_login          = NULL;
1196 uschar *unknown_username       = NULL;
1197 uschar *untrusted_set_sender   = NULL;
1198
1199 /*  A regex for matching a "From_" line in an incoming message, in the form
1200
1201     From ph10 Fri Jan  5 12:35 GMT 1996
1202
1203 which  the "mail" commands send to the MTA (undocumented, of course), or in
1204 the  form
1205
1206     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1207
1208 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1209 Because  of variations in time formats, just match up to the minutes. That
1210 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1211 so  just require one digit for hours and minutes. The weekday is also absent
1212 in  some forms. */
1213
1214 uschar *uucp_from_pattern      = US
1215    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1216    "(?:"                                          /* Non-extracting bracket */
1217    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1218    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1219    ")"                                            /* End alternation */
1220    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1221
1222 uschar *uucp_from_sender       = US"$1";
1223
1224 uschar *warn_message_file      = NULL;
1225 uschar *warnmsg_delay          = NULL;
1226 uschar *warnmsg_recipients     = NULL;
1227 BOOL    write_rejectlog        = TRUE;
1228
1229 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2006";
1230 uschar *version_date           = US"?";
1231 uschar *version_cnumber        = US"????";
1232 uschar *version_string         = US"?";
1233
1234 int     warning_count          = 0;
1235
1236 /*  End of globals.c */