src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.24 2005/05/10 10:19:11 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2005 */
   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 SUPPORT_MOVE_FROZEN_MESSAGES
  91 BOOL    move_frozen_messages   = FALSE;
  92 #endif
  93
  94 /* These variables are outside the #ifdef because it keeps the code less
  95 cluttered in several places (e.g. during logging) if we can always refer to
  96 them. Also, the tls_ variables are now always visible. */
  97
  98 BOOL    tls_active             = -1;
  99 BOOL    tls_certificate_verified = FALSE;
 100 uschar *tls_cipher             = NULL;
 101 BOOL    tls_on_connect         = FALSE;
 102 uschar *tls_on_connect_ports   = NULL;
 103 uschar *tls_peerdn             = NULL;
 104
 105 #ifdef SUPPORT_TLS
 106 const pcre *regex_STARTTLS     = NULL;
 107 uschar *tls_advertise_hosts    = NULL;    /* This is deliberate */
 108 uschar *tls_certificate        = NULL;
 109 uschar *tls_crl                = NULL;
 110 uschar *tls_dhparam            = NULL;
 111 BOOL    tls_offered            = FALSE;
 112 uschar *tls_privatekey         = NULL;
 113 BOOL    tls_remember_esmtp     = FALSE;
 114 uschar *tls_require_ciphers    = NULL;
 115 uschar *tls_try_verify_hosts   = NULL;
 116 uschar *tls_verify_certificates= NULL;
 117 uschar *tls_verify_hosts       = NULL;
 118 #endif
 119
 120
 121 /* Input-reading functions for messages, so we can use special ones for
 122 incoming TCP/IP. The defaults use stdin. We never need these for any
 123 stand-alone tests. */
 124
 125 #ifndef STAND_ALONE
 126 int (*receive_getc)(void)      = stdin_getc;
 127 int (*receive_ungetc)(int)     = stdin_ungetc;
 128 int (*receive_feof)(void)      = stdin_feof;
 129 int (*receive_ferror)(void)    = stdin_ferror;
 130 #endif
 131
 132
 133 /* List of per-address expansion variables for clearing and saving/restoring
 134 when verifying one address while routing/verifying another. We have to have
 135 the size explicit, because it is referenced from more than one module. */
 136
 137 uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 138   &deliver_address_data,
 139   &deliver_domain,
 140   &deliver_domain_data,
 141   &deliver_domain_orig,
 142   &deliver_domain_parent,
 143   &deliver_localpart,
 144   &deliver_localpart_data,
 145   &deliver_localpart_orig,
 146   &deliver_localpart_parent,
 147   &deliver_localpart_prefix,
 148   &deliver_localpart_suffix,
 149   (uschar **)(&deliver_recipients),
 150   &deliver_host,
 151   &deliver_home,
 152   &address_file,
 153   &address_pipe,
 154   &self_hostname,
 155   NULL };
 156
 157 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 158
 159 /* General global variables */
 160
 161 tree_node *acl_anchor          = NULL;
 162 uschar *acl_not_smtp           = NULL;
 163 #ifdef WITH_CONTENT_SCAN
 164 uschar *acl_not_smtp_mime      = NULL;
 165 #endif
 166 uschar *acl_smtp_auth          = NULL;
 167 uschar *acl_smtp_connect       = NULL;
 168 uschar *acl_smtp_data          = NULL;
 169 uschar *acl_smtp_etrn          = NULL;
 170 uschar *acl_smtp_expn          = NULL;
 171 uschar *acl_smtp_helo          = NULL;
 172 uschar *acl_smtp_mail          = NULL;
 173 uschar *acl_smtp_mailauth      = NULL;
 174 #ifdef WITH_CONTENT_SCAN
 175 uschar *acl_smtp_mime          = NULL;
 176 #endif
 177 uschar *acl_smtp_predata       = NULL;
 178 uschar *acl_smtp_quit          = NULL;
 179 uschar *acl_smtp_rcpt          = NULL;
 180 uschar *acl_smtp_starttls      = NULL;
 181 uschar *acl_smtp_vrfy          = NULL;
 182 BOOL    acl_temp_details       = FALSE;
 183 uschar *acl_var[ACL_C_MAX+ACL_M_MAX];
 184 uschar *acl_verify_message     = NULL;
 185 header_line *acl_warn_headers  = NULL;
 186 string_item *acl_warn_logged   = NULL;
 187
 188 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 189 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 190
 191 uschar *acl_wherenames[]       = { US"RCPT",
 192                                    US"MAIL",
 193                                    US"PREDATA",
 194                                    US"MIME",
 195                                    US"DATA",
 196                                    US"non-SMTP",
 197                                    US"AUTH",
 198                                    US"connection",
 199                                    US"ETRN",
 200                                    US"EXPN",
 201                                    US"EHLO or HELO",
 202                                    US"MAILAUTH",
 203                                    US"QUIT",
 204                                    US"STARTTLS",
 205                                    US"VRFY"
 206                                  };
 207
 208 int     acl_wherecodes[]       = { 550,     /* RCPT */
 209                                    550,     /* MAIL */
 210                                    550,     /* PREDATA */
 211                                    550,     /* MIME */
 212                                    550,     /* DATA */
 213                                    0,       /* not SMTP; not relevant */
 214                                    503,     /* AUTH */
 215                                    550,     /* connect */
 216                                    458,     /* ETRN */
 217                                    550,     /* EXPN */
 218                                    550,     /* HELO/EHLO */
 219                                    0,       /* MAILAUTH; not relevant */
 220                                    0,       /* QUIT; not relevant */
 221                                    550,     /* STARTTLS */
 222                                    252      /* VRFY */
 223                                  };
 224
 225 BOOL    active_local_from_check = FALSE;
 226 BOOL    active_local_sender_retain = FALSE;
 227 BOOL    accept_8bitmime        = FALSE;
 228 address_item  *addr_duplicate  = NULL;
 229
 230 address_item address_defaults = {
 231   NULL,                 /* next */
 232   NULL,                 /* parent */
 233   NULL,                 /* first */
 234   NULL,                 /* dupof */
 235   NULL,                 /* start_router */
 236   NULL,                 /* router */
 237   NULL,                 /* transport */
 238   NULL,                 /* host_list */
 239   NULL,                 /* host_used */
 240   NULL,                 /* fallback_hosts */
 241   NULL,                 /* reply */
 242   NULL,                 /* retries */
 243   NULL,                 /* address */
 244   NULL,                 /* unique */
 245   NULL,                 /* cc_local_part */
 246   NULL,                 /* lc_local_part */
 247   NULL,                 /* local_part */
 248   NULL,                 /* prefix */
 249   NULL,                 /* suffix */
 250   NULL,                 /* domain */
 251   NULL,                 /* address_retry_key */
 252   NULL,                 /* domain_retry_key */
 253   NULL,                 /* current_dir */
 254   NULL,                 /* home_dir */
 255   NULL,                 /* message */
 256   NULL,                 /* user_message */
 257   NULL,                 /* onetime_parent */
 258   NULL,                 /* pipe_expandn */
 259   NULL,                 /* return_filename */
 260   NULL,                 /* self_hostname */
 261   NULL,                 /* shadow_message */
 262   #ifdef SUPPORT_TLS
 263   NULL,                 /* cipher */
 264   NULL,                 /* peerdn */
 265   #endif
 266   (uid_t)(-1),          /* uid */
 267   (gid_t)(-1),          /* gid */
 268   0,                    /* flags */
 269   { 0 },                /* domain_cache - any larger array should be zeroed */
 270   { 0 },                /* localpart_cache - ditto */
 271   -1,                   /* mode */
 272   0,                    /* more_errno */
 273   ERRNO_UNKNOWNERROR,   /* basic_errno */
 274   0,                    /* child_count */
 275   -1,                   /* return_file */
 276   SPECIAL_NONE,         /* special_action */
 277   DEFER,                /* transport_return */
 278   {                     /* fields that are propagated to children */
 279     NULL,               /* address_data */
 280     NULL,               /* domain_data */
 281     NULL,               /* localpart_data */
 282     NULL,               /* errors_address */
 283     NULL,               /* extra_headers */
 284     NULL,               /* remove_headers */
 285   }
 286 };
 287
 288 uschar *address_file           = NULL;
 289 uschar *address_pipe           = NULL;
 290 BOOL    address_test_mode      = FALSE;
 291 tree_node *addresslist_anchor  = NULL;
 292 int     addresslist_count      = 0;
 293 gid_t  *admin_groups           = NULL;
 294 BOOL    admin_user             = FALSE;
 295 BOOL    allow_domain_literals  = FALSE;
 296 BOOL    allow_mx_to_ip         = FALSE;
 297 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 298 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 299 BOOL    allow_utf8_domains     = FALSE;
 300 uschar *authenticated_id       = NULL;
 301 uschar *authenticated_sender   = NULL;
 302 BOOL    authentication_failed  = FALSE;
 303 auth_instance  *auths          = NULL;
 304 uschar *auth_advertise_hosts   = US"*";
 305 auth_instance auth_defaults    = {
 306     NULL,                      /* chain pointer */
 307     NULL,                      /* name */
 308     NULL,                      /* info */
 309     NULL,                      /* private options block pointer */
 310     NULL,                      /* driver_name */
 311     NULL,                      /* advertise_condition */
 312     NULL,                      /* public_name */
 313     NULL,                      /* set_id */
 314     NULL,                      /* server_mail_auth_condition */
 315     NULL,                      /* server_debug_string */
 316     FALSE,                     /* client */
 317     FALSE,                     /* server */
 318     FALSE                      /* advertised */
 319 };
 320
 321 uschar *auth_defer_msg         = US"reason not recorded";
 322 uschar *auth_defer_user_msg    = US"";
 323 int     auto_thaw              = 0;
 324 #ifdef WITH_CONTENT_SCAN
 325 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 326 #endif
 327
 328 BOOL    background_daemon      = TRUE;
 329 uschar *base62_chars=
 330     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 331 uschar *bi_command             = NULL;
 332 uschar *big_buffer             = NULL;
 333 int     big_buffer_size        = BIG_BUFFER_SIZE;
 334 #ifdef EXPERIMENTAL_BRIGHTMAIL
 335 uschar *bmi_alt_location       = NULL;
 336 uschar *bmi_base64_tracker_verdict = NULL;
 337 uschar *bmi_base64_verdict     = NULL;
 338 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 339 int     bmi_deliver            = 1;
 340 int     bmi_run                = 0;
 341 uschar *bmi_verdicts           = NULL;
 342 #endif
 343 int     body_linecount         = 0;
 344 int     body_zerocount         = 0;
 345 uschar *bounce_message_file    = NULL;
 346 uschar *bounce_message_text    = NULL;
 347 uschar *bounce_recipient       = NULL;
 348 BOOL    bounce_return_body     = TRUE;
 349 BOOL    bounce_return_message  = TRUE;
 350 int     bounce_return_size_limit = 100*1024;
 351 uschar *bounce_sender_authentication = NULL;
 352 int     bsmtp_transaction_linecount = 0;
 353
 354 int     callout_cache_domain_positive_expire = 7*24*60*60;
 355 int     callout_cache_domain_negative_expire = 3*60*60;
 356 int     callout_cache_positive_expire = 24*60*60;
 357 int     callout_cache_negative_expire = 2*60*60;
 358 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 359 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$";
 360 int     check_log_inodes       = 0;
 361 int     check_log_space        = 0;
 362 int     check_spool_inodes     = 0;
 363 int     check_spool_space      = 0;
 364 int     clmacro_count          = 0;
 365 uschar *clmacros[MAX_CLMACROS];
 366 BOOL    config_changed         = FALSE;
 367 FILE   *config_file            = NULL;
 368 uschar *config_filename        = NULL;
 369 int     config_lineno          = 0;
 370 #ifdef CONFIGURE_GROUP
 371 gid_t   config_gid             = CONFIGURE_GROUP;
 372 #endif
 373 uschar *config_main_filelist   = US CONFIGURE_FILE
 374                          "\0<-----------Space to patch configure_filename->";
 375 uschar *config_main_filename   = NULL;
 376
 377 #ifdef CONFIGURE_OWNER
 378 uid_t   config_uid             = CONFIGURE_OWNER;
 379 #endif
 380
 381 int     connection_max_messages= -1;
 382 uschar *continue_hostname      = NULL;
 383 uschar *continue_host_address  = NULL;
 384 BOOL    continue_more          = FALSE;
 385 int     continue_sequence      = 1;
 386 uschar *continue_transport     = NULL;
 387
 388 uschar *csa_status             = NULL;
 389
 390 BOOL    daemon_listen          = FALSE;
 391 uschar *daemon_smtp_port       = US"smtp";
 392 BOOL    debug_daemon           = FALSE;
 393 int     debug_fd               = -1;
 394 FILE   *debug_file             = NULL;
 395 bit_table debug_options[]      = {
 396   { US"acl",            D_acl },
 397   { US"all",            D_all },
 398   { US"auth",           D_auth },
 399   { US"deliver",        D_deliver },
 400   { US"dns",            D_dns },
 401   { US"dnsbl",          D_dnsbl },
 402   { US"exec",           D_exec },
 403   { US"expand",         D_expand },
 404   { US"filter",         D_filter },
 405   { US"hints_lookup",   D_hints_lookup },
 406   { US"host_lookup",    D_host_lookup },
 407   { US"ident",          D_ident },
 408   { US"interface",      D_interface },
 409   { US"lists",          D_lists },
 410   { US"load",           D_load },
 411   { US"local_scan",     D_local_scan },
 412   { US"lookup",         D_lookup },
 413   { US"memory",         D_memory },
 414   { US"pid",            D_pid },
 415   { US"process_info",   D_process_info },
 416   { US"queue_run",      D_queue_run },
 417   { US"receive",        D_receive },
 418   { US"resolver",       D_resolver },
 419   { US"retry",          D_retry },
 420   { US"rewrite",        D_rewrite },
 421   { US"route",          D_route },
 422   { US"timestamp",      D_timestamp },
 423   { US"tls",            D_tls },
 424   { US"transport",      D_transport },
 425   { US"uid",            D_uid },
 426   { US"verify",         D_verify }
 427 };
 428 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 429 unsigned int debug_selector    = 0;
 430 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 431 uschar *delay_warning_condition= US"${if match{$h_precedence:}{(?i)bulk|list|junk}{no}{yes}}";
 432 BOOL    delivery_date_remove   = TRUE;
 433 uschar *deliver_address_data   = NULL;
 434 int     deliver_datafile       = -1;
 435 uschar *deliver_domain         = NULL;
 436 uschar *deliver_domain_data    = NULL;
 437 uschar *deliver_domain_orig    = NULL;
 438 uschar *deliver_domain_parent  = NULL;
 439 BOOL    deliver_drop_privilege = FALSE;
 440 BOOL    deliver_firsttime      = FALSE;
 441 BOOL    deliver_force          = FALSE;
 442 BOOL    deliver_freeze         = FALSE;
 443 int     deliver_frozen_at      = 0;
 444 uschar *deliver_home           = NULL;
 445 uschar *deliver_host           = NULL;
 446 uschar *deliver_host_address   = NULL;
 447 uschar *deliver_in_buffer      = NULL;
 448 ino_t   deliver_inode          = 0;
 449 uschar *deliver_localpart      = NULL;
 450 uschar *deliver_localpart_data = NULL;
 451 uschar *deliver_localpart_orig = NULL;
 452 uschar *deliver_localpart_parent = NULL;
 453 uschar *deliver_localpart_prefix = NULL;
 454 uschar *deliver_localpart_suffix = NULL;
 455 BOOL    deliver_force_thaw     = FALSE;
 456 BOOL    deliver_manual_thaw    = FALSE;
 457 uschar *deliver_out_buffer     = NULL;
 458 int     deliver_queue_load_max = -1;
 459 address_item  *deliver_recipients = NULL;
 460 uschar *deliver_selectstring   = NULL;
 461 BOOL    deliver_selectstring_regex = FALSE;
 462 uschar *deliver_selectstring_sender = NULL;
 463 BOOL    deliver_selectstring_sender_regex = FALSE;
 464 #ifdef WITH_OLD_DEMIME
 465 int     demime_errorlevel      = 0;
 466 int     demime_ok              = 0;
 467 uschar *demime_reason          = NULL;
 468 #endif
 469 BOOL    disable_logging        = FALSE;
 470
 471 #ifdef EXPERIMENTAL_DOMAINKEYS
 472 uschar *dk_signing_domain      = NULL;
 473 uschar *dk_signing_selector    = NULL;
 474 int     dk_do_verify           = 0;
 475 #endif
 476
 477 uschar *dns_again_means_nonexist = NULL;
 478 int     dns_csa_search_limit   = 5;
 479 BOOL    dns_csa_use_reverse    = TRUE;
 480 uschar *dns_ipv4_lookup        = NULL;
 481 int     dns_retrans            = 0;
 482 int     dns_retry              = 0;
 483 uschar *dnslist_domain         = NULL;
 484 uschar *dnslist_text           = NULL;
 485 uschar *dnslist_value          = NULL;
 486 tree_node *domainlist_anchor   = NULL;
 487 int     domainlist_count       = 0;
 488 BOOL    dont_deliver           = FALSE;
 489 BOOL    dot_ends               = TRUE;
 490 BOOL    drop_cr                = FALSE;         /* No longer used */
 491
 492 BOOL    enable_dollar_recipients = FALSE;
 493 BOOL    envelope_to_remove     = TRUE;
 494 int     errno_quota            = ERRNO_QUOTA;
 495 uschar *errors_copy            = NULL;
 496 int     error_handling         = ERRORS_SENDER;
 497 uschar *errors_reply_to        = NULL;
 498 int     errors_sender_rc       = EXIT_FAILURE;
 499
 500 gid_t   exim_gid               = EXIM_GID;
 501 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 502 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 503                         "\0<---------------Space to patch exim_path->";
 504 uid_t   exim_uid               = EXIM_UID;
 505 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 506 int     expand_forbid          = 0;
 507 int     expand_nlength[EXPAND_MAXN+1];
 508 int     expand_nmax            = -1;
 509 uschar *expand_nstring[EXPAND_MAXN+1];
 510 BOOL    expand_string_forcedfail = FALSE;
 511 uschar *expand_string_message;
 512 BOOL    extract_addresses_remove_arguments = TRUE;
 513 uschar *extra_local_interfaces = NULL;
 514
 515 BOOL    fake_reject            = FALSE;
 516 uschar *fake_reject_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).";
 517 int     filter_n[FILTER_VARIABLE_COUNT];
 518 BOOL    filter_running         = FALSE;
 519 int     filter_sn[FILTER_VARIABLE_COUNT];
 520 int     filter_test            = FTEST_NONE;
 521 uschar *filter_test_sfile      = NULL;
 522 uschar *filter_test_ufile      = NULL;
 523 uschar *filter_thisaddress     = NULL;
 524 int     finduser_retries       = 0;
 525 #ifdef WITH_OLD_DEMIME
 526 uschar *found_extension        = NULL;
 527 #endif
 528 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 529 uschar *freeze_tell            = NULL;
 530 uschar *fudged_queue_times     = US"";
 531
 532 uschar *gecos_name             = NULL;
 533 uschar *gecos_pattern          = NULL;
 534 rewrite_rule  *global_rewrite_rules = NULL;
 535
 536 uschar *headers_charset        = US HEADERS_CHARSET;
 537 int     header_insert_maxlen   = 64 * 1024;
 538 header_line  *header_last      = NULL;
 539 header_line  *header_list      = NULL;
 540 int     header_maxsize         = HEADER_MAXSIZE;
 541 int     header_line_maxsize    = 0;
 542
 543 header_name header_names[] = {
 544   { US"bcc",            3, TRUE,  htype_bcc },
 545   { US"cc",             2, TRUE,  htype_cc },
 546   { US"date",           4, TRUE,  htype_date },
 547   { US"delivery-date", 13, FALSE, htype_delivery_date },
 548   { US"envelope-to",   11, FALSE, htype_envelope_to },
 549   { US"from",           4, TRUE,  htype_from },
 550   { US"message-id",    10, TRUE,  htype_id },
 551   { US"received",       8, FALSE, htype_received },
 552   { US"reply-to",       8, FALSE, htype_reply_to },
 553   { US"return-path",   11, FALSE, htype_return_path },
 554   { US"sender",         6, TRUE,  htype_sender },
 555   { US"subject",        7, FALSE, htype_subject },
 556   { US"to",             2, TRUE,  htype_to }
 557 };
 558
 559 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 560
 561 BOOL    header_rewritten       = FALSE;
 562 uschar *helo_accept_junk_hosts = NULL;
 563 uschar *helo_allow_chars       = US"";
 564 uschar *helo_lookup_domains    = US"@ : @[]";
 565 uschar *helo_try_verify_hosts  = NULL;
 566 BOOL    helo_verified          = FALSE;
 567 uschar *helo_verify_hosts      = NULL;
 568 uschar *hex_digits             = US"0123456789abcdef";
 569 uschar *hold_domains           = NULL;
 570 BOOL    host_checking          = FALSE;
 571 BOOL    host_checking_callout  = FALSE;
 572 uschar *host_data              = NULL;
 573 BOOL    host_find_failed_syntax= FALSE;
 574 uschar *host_lookup            = NULL;
 575 BOOL    host_lookup_deferred   = FALSE;
 576 BOOL    host_lookup_failed     = FALSE;
 577 uschar *host_lookup_order      = US"bydns:byaddr";
 578 uschar *host_lookup_msg        = US"";
 579 int     host_number            = 0;
 580 uschar *host_number_string     = NULL;
 581 uschar *host_reject_connection = NULL;
 582 tree_node *hostlist_anchor     = NULL;
 583 int     hostlist_count         = 0;
 584 uschar *hosts_treat_as_local   = NULL;
 585 uschar *hosts_connection_nolog = NULL;
 586
 587 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 588 BOOL    ignore_fromline_local  = FALSE;
 589 uschar *ignore_fromline_hosts  = NULL;
 590 uschar *interface_address      = NULL;
 591 int     interface_port         = -1;
 592 BOOL    is_inetd               = FALSE;
 593
 594 int     journal_fd             = -1;
 595
 596 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 597
 598 uschar *eldap_dn               = NULL;
 599 int     load_average           = -2;
 600 BOOL    local_error_message    = FALSE;
 601 BOOL    local_from_check       = TRUE;
 602 uschar *local_from_prefix      = NULL;
 603 uschar *local_from_suffix      = NULL;
 604
 605 #if HAVE_IPV6
 606 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 607 #else
 608 uschar *local_interfaces       = US"0.0.0.0";
 609 #endif
 610
 611 uschar *local_scan_data        = NULL;
 612 int     local_scan_timeout     = 5*60;
 613 BOOL    local_sender_retain    = FALSE;
 614 gid_t   local_user_gid         = (gid_t)(-1);
 615 uid_t   local_user_uid         = (uid_t)(-1);
 616
 617 tree_node *localpartlist_anchor= NULL;
 618 int     localpartlist_count    = 0;
 619 uschar *log_buffer             = NULL;
 620 unsigned int log_extra_selector = LX_default;
 621 uschar *log_file_path          = US LOG_FILE_PATH
 622                            "\0<--------------Space to patch log_file_path->";
 623
 624 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 625 are the ones that get put into log_write_selector. They can be used in calls to
 626 log_write() to test for the bit. The options with LX_xxx identifiers have
 627 values greater than 0x80000000 and are put int log_extra_selector (without the
 628 top bit). They are never used in calls to log_write(), but are tested
 629 independently. This separation became necessary when the number of log
 630 selectors was getting close to filling a 32-bit word. */
 631
 632 bit_table log_options[]        = {
 633   { US"address_rewrite",              L_address_rewrite },
 634   { US"all",                          L_all },
 635   { US"all_parents",                  L_all_parents },
 636   { US"arguments",                    LX_arguments },
 637   { US"connection_reject",            L_connection_reject },
 638   { US"delay_delivery",               L_delay_delivery },
 639   { US"deliver_time",                 LX_deliver_time },
 640   { US"delivery_size",                LX_delivery_size },
 641   { US"dnslist_defer",                L_dnslist_defer },
 642   { US"etrn",                         L_etrn },
 643   { US"host_lookup_failed",           L_host_lookup_failed },
 644   { US"ident_timeout",                LX_ident_timeout },
 645   { US"incoming_interface",           LX_incoming_interface },
 646   { US"incoming_port",                LX_incoming_port },
 647   { US"lost_incoming_connection",     L_lost_incoming_connection },
 648   { US"outgoing_port",                LX_outgoing_port },
 649   { US"queue_run",                    L_queue_run },
 650   { US"queue_time",                   LX_queue_time },
 651   { US"queue_time_overall",           LX_queue_time_overall },
 652   { US"received_recipients",          LX_received_recipients },
 653   { US"received_sender",              LX_received_sender },
 654   { US"rejected_header",              LX_rejected_header },
 655   { US"rejected_headers",             LX_rejected_header },
 656   { US"retry_defer",                  L_retry_defer },
 657   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 658   { US"sender_on_delivery",           LX_sender_on_delivery },
 659   { US"size_reject",                  L_size_reject },
 660   { US"skip_delivery",                L_skip_delivery },
 661   { US"smtp_confirmation",            LX_smtp_confirmation },
 662   { US"smtp_connection",              L_smtp_connection },
 663   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 664   { US"smtp_protocol_error",          L_smtp_protocol_error },
 665   { US"smtp_syntax_error",            L_smtp_syntax_error },
 666   { US"subject",                      LX_subject },
 667   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 668   { US"tls_cipher",                   LX_tls_cipher },
 669   { US"tls_peerdn",                   LX_tls_peerdn }
 670 };
 671
 672 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 673 unsigned int log_write_selector= L_default;
 674 uschar *log_selector_string    = NULL;
 675 FILE   *log_stderr             = NULL;
 676 BOOL    log_testing_mode       = FALSE;
 677 BOOL    log_timezone           = FALSE;
 678 uschar *login_sender_address   = NULL;
 679 int     lookup_open_max        = 25;
 680 uschar *lookup_value           = NULL;
 681
 682 macro_item  *macros            = NULL;
 683 uschar *mailstore_basename     = NULL;
 684 #ifdef WITH_CONTENT_SCAN
 685 uschar *malware_name           = NULL;  /* Virus Name */
 686 #endif
 687 int     max_username_length    = 0;
 688 int     message_age            = 0;
 689 uschar *message_body           = NULL;
 690 uschar *message_body_end       = NULL;
 691 int     message_body_size      = 0;
 692 int     message_body_visible   = 500;
 693 int     message_ended          = END_NOTSTARTED;
 694 uschar *message_headers        = NULL;
 695 uschar *message_id;
 696 uschar *message_id_domain      = NULL;
 697 uschar *message_id_text        = NULL;
 698 struct timeval message_id_tv   = { 0, 0 };
 699 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 700 uschar *message_id_external;
 701 int     message_linecount      = 0;
 702 BOOL    message_logs           = TRUE;
 703 int     message_size           = 0;
 704 uschar *message_size_limit     = US"50M";
 705 uschar  message_subdir[2]      = { 0, 0 };
 706 uschar *message_reference      = NULL;
 707
 708 /* MIME ACL expandables */
 709 #ifdef WITH_CONTENT_SCAN
 710 int     mime_anomaly_level     = 0;
 711 uschar *mime_anomaly_text      = NULL;
 712 uschar *mime_boundary          = NULL;
 713 uschar *mime_charset           = NULL;
 714 uschar *mime_content_description = NULL;
 715 uschar *mime_content_disposition = NULL;
 716 uschar *mime_content_id        = NULL;
 717 unsigned int mime_content_size = 0;
 718 uschar *mime_content_transfer_encoding = NULL;
 719 uschar *mime_content_type      = NULL;
 720 uschar *mime_decoded_filename  = NULL;
 721 uschar *mime_filename          = NULL;
 722 int     mime_is_multipart      = 0;
 723 int     mime_is_coverletter    = 0;
 724 int     mime_is_rfc822         = 0;
 725 int     mime_part_count        = -1;
 726 #endif
 727
 728 BOOL    mua_wrapper            = FALSE;
 729
 730 uid_t  *never_users            = NULL;
 731 #ifdef WITH_CONTENT_SCAN
 732 BOOL    no_mbox_unspool        = FALSE;
 733 #endif
 734 BOOL    no_multiline_responses = FALSE;
 735
 736 uid_t   original_euid;
 737 gid_t   originator_gid;
 738 uschar *originator_login       = NULL;
 739 uschar *originator_name        = NULL;
 740 uid_t   originator_uid;
 741 uschar *override_local_interfaces = NULL;
 742 uschar *override_pid_file_path = NULL;
 743
 744 BOOL    parse_allow_group      = FALSE;
 745 BOOL    parse_found_group      = FALSE;
 746 uschar *percent_hack_domains   = NULL;
 747 uschar *pid_file_path          = US PID_FILE_PATH
 748                            "\0<--------------Space to patch pid_file_path->";
 749 uschar *pipelining_advertise_hosts = US"*";
 750 BOOL    preserve_message_logs  = FALSE;
 751 uschar *primary_hostname       = NULL;
 752 BOOL    print_topbitchars      = FALSE;
 753 uschar  process_info[PROCESS_INFO_SIZE];
 754 uschar *process_log_path       = NULL;
 755 BOOL    prod_requires_admin    = TRUE;
 756
 757 uschar *qualify_domain_recipient = NULL;
 758 uschar *qualify_domain_sender  = NULL;
 759 BOOL    queue_2stage           = FALSE;
 760 uschar *queue_domains          = NULL;
 761 int     queue_interval         = -1;
 762 BOOL    queue_list_requires_admin = TRUE;
 763 BOOL    queue_only             = FALSE;
 764 uschar *queue_only_file        = NULL;
 765 int     queue_only_load        = -1;
 766 BOOL    queue_only_override    = TRUE;
 767 BOOL    queue_only_policy      = FALSE;
 768 BOOL    queue_run_first_delivery = FALSE;
 769 BOOL    queue_run_force        = FALSE;
 770 BOOL    queue_run_in_order     = FALSE;
 771 BOOL    queue_run_local        = FALSE;
 772 int     queue_run_max          = 5;
 773 pid_t   queue_run_pid          = (pid_t)0;
 774 int     queue_run_pipe         = -1;
 775 BOOL    queue_running          = FALSE;
 776 BOOL    queue_smtp             = FALSE;
 777 uschar *queue_smtp_domains     = NULL;
 778
 779 unsigned int random_seed       = 0;
 780 uschar *raw_active_hostname    = NULL;
 781 uschar *raw_sender             = NULL;
 782 uschar **raw_recipients        = NULL;
 783 int     raw_recipients_count   = 0;
 784
 785 int     rcpt_count             = 0;
 786 int     rcpt_fail_count        = 0;
 787 int     rcpt_defer_count       = 0;
 788 gid_t   real_gid;
 789 uid_t   real_uid;
 790 BOOL    really_exim            = TRUE;
 791 BOOL    receive_call_bombout   = FALSE;
 792 int     receive_linecount      = 0;
 793 int     receive_messagecount   = 0;
 794 int     receive_timeout        = 0;
 795 int     received_count         = 0;
 796 uschar *received_for           = NULL;
 797
 798 /*  This is the default text for Received headers generated by Exim. The
 799 date  will be automatically added on the end. */
 800
 801 uschar *received_header_text   = US
 802      "Received: "
 803      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 804      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
 805      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 806      "by $primary_hostname "
 807      "${if def:received_protocol {with $received_protocol}} "
 808      #ifdef SUPPORT_TLS
 809      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 810      #endif
 811      "(Exim $version_number)\n\t"
 812      "id $message_id"
 813      "${if def:received_for {\n\tfor $received_for}}"
 814      "\0<---------------Space to patch received_header_text->";
 815
 816 int     received_headers_max   = 30;
 817 uschar *received_protocol      = NULL;
 818 int     received_time          = 0;
 819 uschar *recipient_data         = NULL;
 820 uschar *recipient_unqualified_hosts = NULL;
 821 uschar *recipient_verify_failure = NULL;
 822 int     recipients_count       = 0;
 823 BOOL    recipients_discarded   = FALSE;
 824 recipient_item  *recipients_list = NULL;
 825 int     recipients_list_max    = 0;
 826 int     recipients_max         = 0;
 827 BOOL    recipients_max_reject  = FALSE;
 828 const pcre *regex_AUTH         = NULL;
 829 const pcre *regex_check_dns_names = NULL;
 830 const pcre *regex_From         = NULL;
 831 const pcre *regex_PIPELINING   = NULL;
 832 const pcre *regex_SIZE         = NULL;
 833 const pcre *regex_ismsgid      = NULL;
 834 #ifdef WITH_CONTENT_SCAN
 835 uschar *regex_match_string     = NULL;
 836 #endif
 837 int     remote_delivery_count  = 0;
 838 int     remote_max_parallel    = 2;
 839 uschar *remote_sort_domains    = NULL;
 840 int     retry_data_expire      = 7*24*60*60;
 841 int     retry_interval_max     = 24*60*60;
 842 int     retry_maximum_timeout  = 0;        /* set from retry config */
 843 retry_config  *retries         = NULL;
 844 uschar *return_path            = NULL;
 845 BOOL    return_path_remove     = TRUE;
 846 int     rewrite_existflags     = 0;
 847 uschar *rfc1413_hosts          = US"*";
 848 int     rfc1413_query_timeout  = 30;
 849 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 850 uid_t   root_uid               = ROOT_UID;
 851
 852 router_instance  *routers  = NULL;
 853 router_instance  router_defaults = {
 854     NULL,                      /* chain pointer */
 855     NULL,                      /* name */
 856     NULL,                      /* info */
 857     NULL,                      /* private options block pointer */
 858     NULL,                      /* driver name */
 859
 860     NULL,                      /* address_data */
 861 #ifdef EXPERIMENTAL_BRIGHTMAIL
 862     NULL,                      /* bmi_rule */
 863 #endif
 864     NULL,                      /* cannot_route_message */
 865     NULL,                      /* condition */
 866     NULL,                      /* current_directory */
 867     NULL,                      /* debug_string */
 868     NULL,                      /* domains */
 869     NULL,                      /* errors_to */
 870     NULL,                      /* expand_gid */
 871     NULL,                      /* expand_uid */
 872     NULL,                      /* expand_more */
 873     NULL,                      /* expand_unseen */
 874     NULL,                      /* extra_headers */
 875     NULL,                      /* fallback_hosts */
 876     NULL,                      /* home_directory */
 877     NULL,                      /* ignore_target_hosts */
 878     NULL,                      /* local_parts */
 879     NULL,                      /* pass_router_name */
 880     NULL,                      /* prefix */
 881     NULL,                      /* redirect_router_name */
 882     NULL,                      /* remove_headers */
 883     NULL,                      /* require_files */
 884     NULL,                      /* router_home_directory */
 885     US"freeze",                /* self */
 886     NULL,                      /* senders */
 887     NULL,                      /* suffix */
 888     NULL,                      /* translate_ip_address */
 889     NULL,                      /* transport_name */
 890
 891     TRUE,                      /* address_test */
 892 #ifdef EXPERIMENTAL_BRIGHTMAIL
 893     FALSE,                     /* bmi_deliver_alternate */
 894     FALSE,                     /* bmi_deliver_default */
 895     FALSE,                     /* bmi_dont_deliver */
 896 #endif
 897     TRUE,                      /* expn */
 898     FALSE,                     /* caseful_local_part */
 899     FALSE,                     /* check_local_user */
 900     FALSE,                     /* disable_logging */
 901     FALSE,                     /* fail_verify_recipient */
 902     FALSE,                     /* fail_verify_sender */
 903     FALSE,                     /* gid_set */
 904     FALSE,                     /* initgroups */
 905     TRUE_UNSET,                /* log_as_local */
 906     TRUE,                      /* more */
 907     FALSE,                     /* pass_on_timeout */
 908     FALSE,                     /* prefix_optional */
 909     TRUE,                      /* repeat_use */
 910     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
 911     FALSE,                     /* same_domain_copy_routing */
 912     FALSE,                     /* self_rewrite */
 913     FALSE,                     /* suffix_optional */
 914     FALSE,                     /* verify_only */
 915     TRUE,                      /* verify_recipient */
 916     TRUE,                      /* verify_sender */
 917     FALSE,                     /* uid_set */
 918     FALSE,                     /* unseen */
 919
 920     self_freeze,               /* self_code */
 921     (uid_t)(-1),               /* uid */
 922     (gid_t)(-1),               /* gid */
 923
 924     NULL,                      /* fallback_hostlist */
 925     NULL,                      /* transport instance */
 926     NULL,                      /* pass_router */
 927     NULL                       /* redirect_router */
 928 };
 929
 930 ip_address_item *running_interfaces = NULL;
 931 BOOL    running_in_test_harness = FALSE;
 932
 933 /* This is a weird one. The following string gets patched in the binary by the
 934 script that sets up a copy of Exim for running in the test harness. It seems
 935 that compilers are now clever, and share constant strings if they can.
 936 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
 937 make use of the end of this string in order to save space. So the patching then
 938 wrecks this. We default this optimization by adding some additional characters
 939 onto the end of the string. */
 940
 941 uschar *running_status         = US">>>running<<<" "\0EXTRA";
 942
 943 int     runrc                  = 0;
 944
 945 uschar *search_error_message   = NULL;
 946 BOOL    search_find_defer      = FALSE;
 947 uschar *self_hostname          = NULL;
 948 uschar *sender_address         = NULL;
 949 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
 950 uschar *sender_address_data    = NULL;
 951 BOOL    sender_address_forced  = FALSE;
 952 uschar *sender_address_unrewritten = NULL;
 953 uschar *sender_data            = NULL;
 954 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
 955 uschar *sender_fullhost        = NULL;
 956 uschar *sender_helo_name       = NULL;
 957 uschar **sender_host_aliases   = &no_aliases;
 958 uschar *sender_host_address    = NULL;
 959 uschar *sender_host_authenticated = NULL;
 960 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
 961 uschar *sender_host_name       = NULL;
 962 int     sender_host_port       = 0;
 963 BOOL    sender_host_notsocket  = FALSE;
 964 BOOL    sender_host_unknown    = FALSE;
 965 uschar *sender_ident           = NULL;
 966 BOOL    sender_local           = FALSE;
 967 uschar *sender_rcvhost         = NULL;
 968 BOOL    sender_set_untrusted   = FALSE;
 969 uschar *sender_unqualified_hosts = NULL;
 970 uschar *sender_verify_failure = NULL;
 971 address_item *sender_verified_list  = NULL;
 972 address_item *sender_verified_failed = NULL;
 973 int     sender_verified_rc     = -1;
 974 BOOL    sender_verified_responded = FALSE;
 975 volatile  BOOL sigalrm_seen    = FALSE;
 976 uschar **sighup_argv           = NULL;
 977 int     smtp_accept_count      = 0;
 978 BOOL    smtp_accept_keepalive  = TRUE;
 979 int     smtp_accept_max        = 20;
 980 int     smtp_accept_max_nonmail= 10;
 981 uschar *smtp_accept_max_nonmail_hosts = US"*";
 982 int     smtp_accept_max_per_connection = 1000;
 983 uschar *smtp_accept_max_per_host = NULL;
 984 int     smtp_accept_queue      = 0;
 985 int     smtp_accept_queue_per_connection = 10;
 986 int     smtp_accept_reserve    = 0;
 987 uschar *smtp_active_hostname   = NULL;
 988 BOOL    smtp_authenticated     = FALSE;
 989 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
 990                              "Exim $version_number $tod_full"
 991                              "\0<---------------Space to patch smtp_banner->";
 992 BOOL    smtp_batched_input     = FALSE;
 993 BOOL    smtp_check_spool_space = TRUE;
 994 uschar *smtp_command_argument  = NULL;
 995 int     smtp_connect_backlog   = 20;
 996 double  smtp_delay_mail        = 0.0;
 997 double  smtp_delay_rcpt        = 0.0;
 998 BOOL    smtp_enforce_sync      = TRUE;
 999 FILE   *smtp_in                = NULL;
1000 BOOL    smtp_input             = FALSE;
1001 int     smtp_load_reserve      = -1;
1002 int     smtp_mailcmd_count     = 0;
1003 FILE   *smtp_out               = NULL;
1004 uschar *smtp_etrn_command      = NULL;
1005 BOOL    smtp_etrn_serialize    = TRUE;
1006 int     smtp_max_synprot_errors= 3;
1007 int     smtp_max_unknown_commands = 3;
1008 uschar *smtp_ratelimit_hosts   = NULL;
1009 uschar *smtp_ratelimit_mail    = NULL;
1010 uschar *smtp_ratelimit_rcpt    = NULL;
1011 uschar *smtp_read_error        = US"";
1012 int     smtp_receive_timeout   = 5*60;
1013 uschar *smtp_reserve_hosts     = NULL;
1014 BOOL    smtp_return_error_details = FALSE;
1015 int     smtp_rlm_base          = 0;
1016 double  smtp_rlm_factor        = 0.0;
1017 int     smtp_rlm_limit         = 0;
1018 int     smtp_rlm_threshold     = INT_MAX;
1019 int     smtp_rlr_base          = 0;
1020 double  smtp_rlr_factor        = 0.0;
1021 int     smtp_rlr_limit         = 0;
1022 int     smtp_rlr_threshold     = INT_MAX;
1023 BOOL    smtp_use_pipelining    = FALSE;
1024 BOOL    smtp_use_size          = FALSE;
1025
1026 #ifdef WITH_CONTENT_SCAN
1027 uschar *spamd_address          = US"127.0.0.1 783";
1028 uschar *spam_bar               = NULL;
1029 uschar *spam_report            = NULL;
1030 uschar *spam_score             = NULL;
1031 uschar *spam_score_int         = NULL;
1032 #endif
1033 #ifdef EXPERIMENTAL_SPF
1034 uschar *spf_header_comment     = NULL;
1035 uschar *spf_received           = NULL;
1036 uschar *spf_result             = NULL;
1037 uschar *spf_smtp_comment       = NULL;
1038 #endif
1039
1040 BOOL    split_spool_directory  = FALSE;
1041 uschar *spool_directory        = US SPOOL_DIRECTORY
1042                            "\0<--------------Space to patch spool_directory->";
1043 #ifdef EXPERIMENTAL_SRS
1044 uschar *srs_config             = NULL;
1045 uschar *srs_db_address         = NULL;
1046 uschar *srs_db_key             = NULL;
1047 uschar *srs_orig_recipient     = NULL;
1048 uschar *srs_orig_sender        = NULL;
1049 uschar *srs_recipient          = NULL;
1050 uschar *srs_status             = NULL;
1051 #endif
1052 int     string_datestamp_offset= -1;
1053 BOOL    strip_excess_angle_brackets = FALSE;
1054 BOOL    strip_trailing_dot     = FALSE;
1055 uschar *submission_domain      = NULL;
1056 BOOL    submission_mode        = FALSE;
1057 BOOL    synchronous_delivery   = FALSE;
1058 BOOL    syslog_duplication     = TRUE;
1059 int     syslog_facility        = LOG_MAIL;
1060 uschar *syslog_processname     = US"exim";
1061 BOOL    syslog_timestamp       = TRUE;
1062 uschar *system_filter          = NULL;
1063
1064 uschar *system_filter_directory_transport = NULL;
1065 uschar *system_filter_file_transport = NULL;
1066 uschar *system_filter_pipe_transport = NULL;
1067 uschar *system_filter_reply_transport = NULL;
1068
1069 gid_t   system_filter_gid      = 0;
1070 BOOL    system_filter_gid_set  = FALSE;
1071 uid_t   system_filter_uid      = 0;
1072 BOOL    system_filter_uid_set  = FALSE;
1073 BOOL    system_filtering       = FALSE;
1074
1075 BOOL    tcp_nodelay            = TRUE;
1076 int     thismessage_size_limit = 0;
1077 int     timeout_frozen_after   = 0;
1078 BOOL    timestamps_utc         = FALSE;
1079
1080 transport_instance  *transports = NULL;
1081
1082 transport_instance  transport_defaults = {
1083     NULL,                     /* chain pointer */
1084     NULL,                     /* name */
1085     NULL,                     /* info */
1086     NULL,                     /* private options block pointer */
1087     NULL,                     /* driver name */
1088     NULL,                     /* setup entry point */
1089     1,                        /* batch_max */
1090     NULL,                     /* batch_id */
1091     NULL,                     /* home_dir */
1092     NULL,                     /* current_dir */
1093     TRUE,                     /* multi-domain */
1094     FALSE,                    /* overrides_hosts */
1095     100,                      /* max_addresses */
1096     500,                      /* connection_max_messages */
1097     FALSE,                    /* deliver_as_creator */
1098     FALSE,                    /* disable_logging */
1099     FALSE,                    /* initgroups */
1100     FALSE,                    /* uid_set */
1101     FALSE,                    /* gid_set */
1102     (uid_t)(-1),              /* uid */
1103     (gid_t)(-1),              /* gid */
1104     NULL,                     /* expand_uid */
1105     NULL,                     /* expand_gid */
1106     NULL,                     /* warn_message */
1107     NULL,                     /* shadow */
1108     NULL,                     /* shadow_condition */
1109     NULL,                     /* filter_command */
1110     NULL,                     /* add_headers */
1111     NULL,                     /* remove_headers */
1112     NULL,                     /* return_path */
1113     NULL,                     /* debug_string */
1114     NULL,                     /* message_size_limit */
1115     NULL,                     /* headers_rewrite */
1116     NULL,                     /* rewrite_rules */
1117     0,                        /* rewrite_existflags */
1118     300,                      /* filter_timeout */
1119     FALSE,                    /* body_only */
1120     FALSE,                    /* delivery_date_add */
1121     FALSE,                    /* envelope_to_add */
1122     FALSE,                    /* headers_only */
1123     FALSE,                    /* rcpt_include_affixes */
1124     FALSE,                    /* return_path_add */
1125     FALSE,                    /* return_output */
1126     FALSE,                    /* return_fail_output */
1127     FALSE,                    /* log_output */
1128     FALSE,                    /* log_fail_output */
1129     FALSE,                    /* log_defer_output */
1130     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1131                                  1 nor 0 so can detect unset */
1132 };
1133
1134 int     transport_count;
1135 uschar **transport_filter_argv  = NULL;
1136 int     transport_filter_timeout;
1137 BOOL    transport_filter_timed_out = FALSE;
1138 int     transport_write_timeout= 0;
1139
1140 tree_node  *tree_dns_fails     = NULL;
1141 tree_node  *tree_duplicates    = NULL;
1142 tree_node  *tree_nonrecipients = NULL;
1143 tree_node  *tree_unusable      = NULL;
1144
1145 BOOL    trusted_caller         = FALSE;
1146 gid_t  *trusted_groups         = NULL;
1147 uid_t  *trusted_users          = NULL;
1148 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1149
1150 uschar *unknown_login          = NULL;
1151 uschar *unknown_username       = NULL;
1152 uschar *untrusted_set_sender   = NULL;
1153
1154 /*  A regex for matching a "From_" line in an incoming message, in the form
1155
1156     From ph10 Fri Jan  5 12:35 GMT 1996
1157
1158 which  the "mail" commands send to the MTA (undocumented, of course), or in
1159 the  form
1160
1161     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1162
1163 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1164 Because  of variations in time formats, just match up to the minutes. That
1165 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1166 so  just require one digit for hours and minutes. The weekday is also absent
1167 in  some forms. */
1168
1169 uschar *uucp_from_pattern      = US
1170    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1171    "(?:"                                          /* Non-extracting bracket */
1172    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1173    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1174    ")"                                            /* End alternation */
1175    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1176
1177 uschar *uucp_from_sender       = US"$1";
1178
1179 uschar *warn_message_file      = NULL;
1180 uschar *warnmsg_delay          = NULL;
1181 uschar *warnmsg_recipients     = NULL;
1182 BOOL    write_rejectlog        = TRUE;
1183
1184 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2005";
1185 uschar *version_date           = US"?";
1186 uschar *version_cnumber        = US"????";
1187 uschar *version_string         = US"?";
1188
1189 int     warning_count          = 0;
1190
1191 /*  End of globals.c */