src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.23 2005/05/03 14:20:01 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 BOOL    daemon_listen          = FALSE;
 389 uschar *daemon_smtp_port       = US"smtp";
 390 BOOL    debug_daemon           = FALSE;
 391 int     debug_fd               = -1;
 392 FILE   *debug_file             = NULL;
 393 bit_table debug_options[]      = {
 394   { US"acl",            D_acl },
 395   { US"all",            D_all },
 396   { US"auth",           D_auth },
 397   { US"deliver",        D_deliver },
 398   { US"dns",            D_dns },
 399   { US"dnsbl",          D_dnsbl },
 400   { US"exec",           D_exec },
 401   { US"expand",         D_expand },
 402   { US"filter",         D_filter },
 403   { US"hints_lookup",   D_hints_lookup },
 404   { US"host_lookup",    D_host_lookup },
 405   { US"ident",          D_ident },
 406   { US"interface",      D_interface },
 407   { US"lists",          D_lists },
 408   { US"load",           D_load },
 409   { US"local_scan",     D_local_scan },
 410   { US"lookup",         D_lookup },
 411   { US"memory",         D_memory },
 412   { US"pid",            D_pid },
 413   { US"process_info",   D_process_info },
 414   { US"queue_run",      D_queue_run },
 415   { US"receive",        D_receive },
 416   { US"resolver",       D_resolver },
 417   { US"retry",          D_retry },
 418   { US"rewrite",        D_rewrite },
 419   { US"route",          D_route },
 420   { US"timestamp",      D_timestamp },
 421   { US"tls",            D_tls },
 422   { US"transport",      D_transport },
 423   { US"uid",            D_uid },
 424   { US"verify",         D_verify }
 425 };
 426 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 427 unsigned int debug_selector    = 0;
 428 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 429 uschar *delay_warning_condition= US"${if match{$h_precedence:}{(?i)bulk|list|junk}{no}{yes}}";
 430 BOOL    delivery_date_remove   = TRUE;
 431 uschar *deliver_address_data   = NULL;
 432 int     deliver_datafile       = -1;
 433 uschar *deliver_domain         = NULL;
 434 uschar *deliver_domain_data    = NULL;
 435 uschar *deliver_domain_orig    = NULL;
 436 uschar *deliver_domain_parent  = NULL;
 437 BOOL    deliver_drop_privilege = FALSE;
 438 BOOL    deliver_firsttime      = FALSE;
 439 BOOL    deliver_force          = FALSE;
 440 BOOL    deliver_freeze         = FALSE;
 441 int     deliver_frozen_at      = 0;
 442 uschar *deliver_home           = NULL;
 443 uschar *deliver_host           = NULL;
 444 uschar *deliver_host_address   = NULL;
 445 uschar *deliver_in_buffer      = NULL;
 446 ino_t   deliver_inode          = 0;
 447 uschar *deliver_localpart      = NULL;
 448 uschar *deliver_localpart_data = NULL;
 449 uschar *deliver_localpart_orig = NULL;
 450 uschar *deliver_localpart_parent = NULL;
 451 uschar *deliver_localpart_prefix = NULL;
 452 uschar *deliver_localpart_suffix = NULL;
 453 BOOL    deliver_force_thaw     = FALSE;
 454 BOOL    deliver_manual_thaw    = FALSE;
 455 uschar *deliver_out_buffer     = NULL;
 456 int     deliver_queue_load_max = -1;
 457 address_item  *deliver_recipients = NULL;
 458 uschar *deliver_selectstring   = NULL;
 459 BOOL    deliver_selectstring_regex = FALSE;
 460 uschar *deliver_selectstring_sender = NULL;
 461 BOOL    deliver_selectstring_sender_regex = FALSE;
 462 #ifdef WITH_OLD_DEMIME
 463 int     demime_errorlevel      = 0;
 464 int     demime_ok              = 0;
 465 uschar *demime_reason          = NULL;
 466 #endif
 467 BOOL    disable_logging        = FALSE;
 468
 469 #ifdef EXPERIMENTAL_DOMAINKEYS
 470 uschar *dk_signing_domain      = NULL;
 471 uschar *dk_signing_selector    = NULL;
 472 int     dk_do_verify           = 0;
 473 #endif
 474
 475 uschar *dns_again_means_nonexist = NULL;
 476 uschar *dns_ipv4_lookup        = NULL;
 477 int     dns_retrans            = 0;
 478 int     dns_retry              = 0;
 479 uschar *dnslist_domain         = NULL;
 480 uschar *dnslist_text           = NULL;
 481 uschar *dnslist_value          = NULL;
 482 tree_node *domainlist_anchor   = NULL;
 483 int     domainlist_count       = 0;
 484 BOOL    dont_deliver           = FALSE;
 485 BOOL    dot_ends               = TRUE;
 486 BOOL    drop_cr                = FALSE;         /* No longer used */
 487
 488 BOOL    enable_dollar_recipients = FALSE;
 489 BOOL    envelope_to_remove     = TRUE;
 490 int     errno_quota            = ERRNO_QUOTA;
 491 uschar *errors_copy            = NULL;
 492 int     error_handling         = ERRORS_SENDER;
 493 uschar *errors_reply_to        = NULL;
 494 int     errors_sender_rc       = EXIT_FAILURE;
 495
 496 gid_t   exim_gid               = EXIM_GID;
 497 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 498 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 499                         "\0<---------------Space to patch exim_path->";
 500 uid_t   exim_uid               = EXIM_UID;
 501 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 502 int     expand_forbid          = 0;
 503 int     expand_nlength[EXPAND_MAXN+1];
 504 int     expand_nmax            = -1;
 505 uschar *expand_nstring[EXPAND_MAXN+1];
 506 BOOL    expand_string_forcedfail = FALSE;
 507 uschar *expand_string_message;
 508 BOOL    extract_addresses_remove_arguments = TRUE;
 509 uschar *extra_local_interfaces = NULL;
 510
 511 BOOL    fake_reject            = FALSE;
 512 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).";
 513 int     filter_n[FILTER_VARIABLE_COUNT];
 514 BOOL    filter_running         = FALSE;
 515 int     filter_sn[FILTER_VARIABLE_COUNT];
 516 int     filter_test            = FTEST_NONE;
 517 uschar *filter_test_sfile      = NULL;
 518 uschar *filter_test_ufile      = NULL;
 519 uschar *filter_thisaddress     = NULL;
 520 int     finduser_retries       = 0;
 521 #ifdef WITH_OLD_DEMIME
 522 uschar *found_extension        = NULL;
 523 #endif
 524 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 525 uschar *freeze_tell            = NULL;
 526 uschar *fudged_queue_times     = US"";
 527
 528 uschar *gecos_name             = NULL;
 529 uschar *gecos_pattern          = NULL;
 530 rewrite_rule  *global_rewrite_rules = NULL;
 531
 532 uschar *headers_charset        = US HEADERS_CHARSET;
 533 int     header_insert_maxlen   = 64 * 1024;
 534 header_line  *header_last      = NULL;
 535 header_line  *header_list      = NULL;
 536 int     header_maxsize         = HEADER_MAXSIZE;
 537 int     header_line_maxsize    = 0;
 538
 539 header_name header_names[] = {
 540   { US"bcc",            3, TRUE,  htype_bcc },
 541   { US"cc",             2, TRUE,  htype_cc },
 542   { US"date",           4, TRUE,  htype_date },
 543   { US"delivery-date", 13, FALSE, htype_delivery_date },
 544   { US"envelope-to",   11, FALSE, htype_envelope_to },
 545   { US"from",           4, TRUE,  htype_from },
 546   { US"message-id",    10, TRUE,  htype_id },
 547   { US"received",       8, FALSE, htype_received },
 548   { US"reply-to",       8, FALSE, htype_reply_to },
 549   { US"return-path",   11, FALSE, htype_return_path },
 550   { US"sender",         6, TRUE,  htype_sender },
 551   { US"subject",        7, FALSE, htype_subject },
 552   { US"to",             2, TRUE,  htype_to }
 553 };
 554
 555 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 556
 557 BOOL    header_rewritten       = FALSE;
 558 uschar *helo_accept_junk_hosts = NULL;
 559 uschar *helo_allow_chars       = US"";
 560 uschar *helo_lookup_domains    = US"@ : @[]";
 561 uschar *helo_try_verify_hosts  = NULL;
 562 BOOL    helo_verified          = FALSE;
 563 uschar *helo_verify_hosts      = NULL;
 564 uschar *hex_digits             = US"0123456789abcdef";
 565 uschar *hold_domains           = NULL;
 566 BOOL    host_checking          = FALSE;
 567 BOOL    host_checking_callout  = FALSE;
 568 uschar *host_data              = NULL;
 569 BOOL    host_find_failed_syntax= FALSE;
 570 uschar *host_lookup            = NULL;
 571 BOOL    host_lookup_deferred   = FALSE;
 572 BOOL    host_lookup_failed     = FALSE;
 573 uschar *host_lookup_order      = US"bydns:byaddr";
 574 uschar *host_lookup_msg        = US"";
 575 int     host_number            = 0;
 576 uschar *host_number_string     = NULL;
 577 uschar *host_reject_connection = NULL;
 578 tree_node *hostlist_anchor     = NULL;
 579 int     hostlist_count         = 0;
 580 uschar *hosts_treat_as_local   = NULL;
 581 uschar *hosts_connection_nolog = NULL;
 582
 583 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 584 BOOL    ignore_fromline_local  = FALSE;
 585 uschar *ignore_fromline_hosts  = NULL;
 586 uschar *interface_address      = NULL;
 587 int     interface_port         = -1;
 588 BOOL    is_inetd               = FALSE;
 589
 590 int     journal_fd             = -1;
 591
 592 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 593
 594 uschar *eldap_dn               = NULL;
 595 int     load_average           = -2;
 596 BOOL    local_error_message    = FALSE;
 597 BOOL    local_from_check       = TRUE;
 598 uschar *local_from_prefix      = NULL;
 599 uschar *local_from_suffix      = NULL;
 600
 601 #if HAVE_IPV6
 602 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 603 #else
 604 uschar *local_interfaces       = US"0.0.0.0";
 605 #endif
 606
 607 uschar *local_scan_data        = NULL;
 608 int     local_scan_timeout     = 5*60;
 609 BOOL    local_sender_retain    = FALSE;
 610 gid_t   local_user_gid         = (gid_t)(-1);
 611 uid_t   local_user_uid         = (uid_t)(-1);
 612
 613 tree_node *localpartlist_anchor= NULL;
 614 int     localpartlist_count    = 0;
 615 uschar *log_buffer             = NULL;
 616 unsigned int log_extra_selector = LX_default;
 617 uschar *log_file_path          = US LOG_FILE_PATH
 618                            "\0<--------------Space to patch log_file_path->";
 619
 620 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 621 are the ones that get put into log_write_selector. They can be used in calls to
 622 log_write() to test for the bit. The options with LX_xxx identifiers have
 623 values greater than 0x80000000 and are put int log_extra_selector (without the
 624 top bit). They are never used in calls to log_write(), but are tested
 625 independently. This separation became necessary when the number of log
 626 selectors was getting close to filling a 32-bit word. */
 627
 628 bit_table log_options[]        = {
 629   { US"address_rewrite",              L_address_rewrite },
 630   { US"all",                          L_all },
 631   { US"all_parents",                  L_all_parents },
 632   { US"arguments",                    LX_arguments },
 633   { US"connection_reject",            L_connection_reject },
 634   { US"delay_delivery",               L_delay_delivery },
 635   { US"deliver_time",                 LX_deliver_time },
 636   { US"delivery_size",                LX_delivery_size },
 637   { US"dnslist_defer",                L_dnslist_defer },
 638   { US"etrn",                         L_etrn },
 639   { US"host_lookup_failed",           L_host_lookup_failed },
 640   { US"ident_timeout",                LX_ident_timeout },
 641   { US"incoming_interface",           LX_incoming_interface },
 642   { US"incoming_port",                LX_incoming_port },
 643   { US"lost_incoming_connection",     L_lost_incoming_connection },
 644   { US"outgoing_port",                LX_outgoing_port },
 645   { US"queue_run",                    L_queue_run },
 646   { US"queue_time",                   LX_queue_time },
 647   { US"queue_time_overall",           LX_queue_time_overall },
 648   { US"received_recipients",          LX_received_recipients },
 649   { US"received_sender",              LX_received_sender },
 650   { US"rejected_header",              LX_rejected_header },
 651   { US"rejected_headers",             LX_rejected_header },
 652   { US"retry_defer",                  L_retry_defer },
 653   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 654   { US"sender_on_delivery",           LX_sender_on_delivery },
 655   { US"size_reject",                  L_size_reject },
 656   { US"skip_delivery",                L_skip_delivery },
 657   { US"smtp_confirmation",            LX_smtp_confirmation },
 658   { US"smtp_connection",              L_smtp_connection },
 659   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 660   { US"smtp_protocol_error",          L_smtp_protocol_error },
 661   { US"smtp_syntax_error",            L_smtp_syntax_error },
 662   { US"subject",                      LX_subject },
 663   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 664   { US"tls_cipher",                   LX_tls_cipher },
 665   { US"tls_peerdn",                   LX_tls_peerdn }
 666 };
 667
 668 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 669 unsigned int log_write_selector= L_default;
 670 uschar *log_selector_string    = NULL;
 671 FILE   *log_stderr             = NULL;
 672 BOOL    log_testing_mode       = FALSE;
 673 BOOL    log_timezone           = FALSE;
 674 uschar *login_sender_address   = NULL;
 675 int     lookup_open_max        = 25;
 676 uschar *lookup_value           = NULL;
 677
 678 macro_item  *macros            = NULL;
 679 uschar *mailstore_basename     = NULL;
 680 #ifdef WITH_CONTENT_SCAN
 681 uschar *malware_name           = NULL;  /* Virus Name */
 682 #endif
 683 int     max_username_length    = 0;
 684 int     message_age            = 0;
 685 uschar *message_body           = NULL;
 686 uschar *message_body_end       = NULL;
 687 int     message_body_size      = 0;
 688 int     message_body_visible   = 500;
 689 int     message_ended          = END_NOTSTARTED;
 690 uschar *message_headers        = NULL;
 691 uschar *message_id;
 692 uschar *message_id_domain      = NULL;
 693 uschar *message_id_text        = NULL;
 694 struct timeval message_id_tv   = { 0, 0 };
 695 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 696 uschar *message_id_external;
 697 int     message_linecount      = 0;
 698 BOOL    message_logs           = TRUE;
 699 int     message_size           = 0;
 700 uschar *message_size_limit     = US"50M";
 701 uschar  message_subdir[2]      = { 0, 0 };
 702 uschar *message_reference      = NULL;
 703
 704 /* MIME ACL expandables */
 705 #ifdef WITH_CONTENT_SCAN
 706 int     mime_anomaly_level     = 0;
 707 uschar *mime_anomaly_text      = NULL;
 708 uschar *mime_boundary          = NULL;
 709 uschar *mime_charset           = NULL;
 710 uschar *mime_content_description = NULL;
 711 uschar *mime_content_disposition = NULL;
 712 uschar *mime_content_id        = NULL;
 713 unsigned int mime_content_size = 0;
 714 uschar *mime_content_transfer_encoding = NULL;
 715 uschar *mime_content_type      = NULL;
 716 uschar *mime_decoded_filename  = NULL;
 717 uschar *mime_filename          = NULL;
 718 int     mime_is_multipart      = 0;
 719 int     mime_is_coverletter    = 0;
 720 int     mime_is_rfc822         = 0;
 721 int     mime_part_count        = -1;
 722 #endif
 723
 724 BOOL    mua_wrapper            = FALSE;
 725
 726 uid_t  *never_users            = NULL;
 727 #ifdef WITH_CONTENT_SCAN
 728 BOOL    no_mbox_unspool        = FALSE;
 729 #endif
 730 BOOL    no_multiline_responses = FALSE;
 731
 732 uid_t   original_euid;
 733 gid_t   originator_gid;
 734 uschar *originator_login       = NULL;
 735 uschar *originator_name        = NULL;
 736 uid_t   originator_uid;
 737 uschar *override_local_interfaces = NULL;
 738 uschar *override_pid_file_path = NULL;
 739
 740 BOOL    parse_allow_group      = FALSE;
 741 BOOL    parse_found_group      = FALSE;
 742 uschar *percent_hack_domains   = NULL;
 743 uschar *pid_file_path          = US PID_FILE_PATH
 744                            "\0<--------------Space to patch pid_file_path->";
 745 uschar *pipelining_advertise_hosts = US"*";
 746 BOOL    preserve_message_logs  = FALSE;
 747 uschar *primary_hostname       = NULL;
 748 BOOL    print_topbitchars      = FALSE;
 749 uschar  process_info[PROCESS_INFO_SIZE];
 750 uschar *process_log_path       = NULL;
 751 BOOL    prod_requires_admin    = TRUE;
 752
 753 uschar *qualify_domain_recipient = NULL;
 754 uschar *qualify_domain_sender  = NULL;
 755 BOOL    queue_2stage           = FALSE;
 756 uschar *queue_domains          = NULL;
 757 int     queue_interval         = -1;
 758 BOOL    queue_list_requires_admin = TRUE;
 759 BOOL    queue_only             = FALSE;
 760 uschar *queue_only_file        = NULL;
 761 int     queue_only_load        = -1;
 762 BOOL    queue_only_override    = TRUE;
 763 BOOL    queue_only_policy      = FALSE;
 764 BOOL    queue_run_first_delivery = FALSE;
 765 BOOL    queue_run_force        = FALSE;
 766 BOOL    queue_run_in_order     = FALSE;
 767 BOOL    queue_run_local        = FALSE;
 768 int     queue_run_max          = 5;
 769 pid_t   queue_run_pid          = (pid_t)0;
 770 int     queue_run_pipe         = -1;
 771 BOOL    queue_running          = FALSE;
 772 BOOL    queue_smtp             = FALSE;
 773 uschar *queue_smtp_domains     = NULL;
 774
 775 unsigned int random_seed       = 0;
 776 uschar *raw_active_hostname    = NULL;
 777 uschar *raw_sender             = NULL;
 778 uschar **raw_recipients        = NULL;
 779 int     raw_recipients_count   = 0;
 780
 781 int     rcpt_count             = 0;
 782 int     rcpt_fail_count        = 0;
 783 int     rcpt_defer_count       = 0;
 784 gid_t   real_gid;
 785 uid_t   real_uid;
 786 BOOL    really_exim            = TRUE;
 787 BOOL    receive_call_bombout   = FALSE;
 788 int     receive_linecount      = 0;
 789 int     receive_messagecount   = 0;
 790 int     receive_timeout        = 0;
 791 int     received_count         = 0;
 792 uschar *received_for           = NULL;
 793
 794 /*  This is the default text for Received headers generated by Exim. The
 795 date  will be automatically added on the end. */
 796
 797 uschar *received_header_text   = US
 798      "Received: "
 799      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 800      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
 801      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 802      "by $primary_hostname "
 803      "${if def:received_protocol {with $received_protocol}} "
 804      #ifdef SUPPORT_TLS
 805      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 806      #endif
 807      "(Exim $version_number)\n\t"
 808      "id $message_id"
 809      "${if def:received_for {\n\tfor $received_for}}"
 810      "\0<---------------Space to patch received_header_text->";
 811
 812 int     received_headers_max   = 30;
 813 uschar *received_protocol      = NULL;
 814 int     received_time          = 0;
 815 uschar *recipient_data         = NULL;
 816 uschar *recipient_unqualified_hosts = NULL;
 817 uschar *recipient_verify_failure = NULL;
 818 int     recipients_count       = 0;
 819 BOOL    recipients_discarded   = FALSE;
 820 recipient_item  *recipients_list = NULL;
 821 int     recipients_list_max    = 0;
 822 int     recipients_max         = 0;
 823 BOOL    recipients_max_reject  = FALSE;
 824 const pcre *regex_AUTH         = NULL;
 825 const pcre *regex_check_dns_names = NULL;
 826 const pcre *regex_From         = NULL;
 827 const pcre *regex_PIPELINING   = NULL;
 828 const pcre *regex_SIZE         = NULL;
 829 const pcre *regex_ismsgid      = NULL;
 830 #ifdef WITH_CONTENT_SCAN
 831 uschar *regex_match_string     = NULL;
 832 #endif
 833 int     remote_delivery_count  = 0;
 834 int     remote_max_parallel    = 2;
 835 uschar *remote_sort_domains    = NULL;
 836 int     retry_data_expire      = 7*24*60*60;
 837 int     retry_interval_max     = 24*60*60;
 838 int     retry_maximum_timeout  = 0;        /* set from retry config */
 839 retry_config  *retries         = NULL;
 840 uschar *return_path            = NULL;
 841 BOOL    return_path_remove     = TRUE;
 842 int     rewrite_existflags     = 0;
 843 uschar *rfc1413_hosts          = US"*";
 844 int     rfc1413_query_timeout  = 30;
 845 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 846 uid_t   root_uid               = ROOT_UID;
 847
 848 router_instance  *routers  = NULL;
 849 router_instance  router_defaults = {
 850     NULL,                      /* chain pointer */
 851     NULL,                      /* name */
 852     NULL,                      /* info */
 853     NULL,                      /* private options block pointer */
 854     NULL,                      /* driver name */
 855
 856     NULL,                      /* address_data */
 857 #ifdef EXPERIMENTAL_BRIGHTMAIL
 858     NULL,                      /* bmi_rule */
 859 #endif
 860     NULL,                      /* cannot_route_message */
 861     NULL,                      /* condition */
 862     NULL,                      /* current_directory */
 863     NULL,                      /* debug_string */
 864     NULL,                      /* domains */
 865     NULL,                      /* errors_to */
 866     NULL,                      /* expand_gid */
 867     NULL,                      /* expand_uid */
 868     NULL,                      /* expand_more */
 869     NULL,                      /* expand_unseen */
 870     NULL,                      /* extra_headers */
 871     NULL,                      /* fallback_hosts */
 872     NULL,                      /* home_directory */
 873     NULL,                      /* ignore_target_hosts */
 874     NULL,                      /* local_parts */
 875     NULL,                      /* pass_router_name */
 876     NULL,                      /* prefix */
 877     NULL,                      /* redirect_router_name */
 878     NULL,                      /* remove_headers */
 879     NULL,                      /* require_files */
 880     NULL,                      /* router_home_directory */
 881     US"freeze",                /* self */
 882     NULL,                      /* senders */
 883     NULL,                      /* suffix */
 884     NULL,                      /* translate_ip_address */
 885     NULL,                      /* transport_name */
 886
 887     TRUE,                      /* address_test */
 888 #ifdef EXPERIMENTAL_BRIGHTMAIL
 889     FALSE,                     /* bmi_deliver_alternate */
 890     FALSE,                     /* bmi_deliver_default */
 891     FALSE,                     /* bmi_dont_deliver */
 892 #endif
 893     TRUE,                      /* expn */
 894     FALSE,                     /* caseful_local_part */
 895     FALSE,                     /* check_local_user */
 896     FALSE,                     /* disable_logging */
 897     FALSE,                     /* fail_verify_recipient */
 898     FALSE,                     /* fail_verify_sender */
 899     FALSE,                     /* gid_set */
 900     FALSE,                     /* initgroups */
 901     TRUE_UNSET,                /* log_as_local */
 902     TRUE,                      /* more */
 903     FALSE,                     /* pass_on_timeout */
 904     FALSE,                     /* prefix_optional */
 905     TRUE,                      /* repeat_use */
 906     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
 907     FALSE,                     /* same_domain_copy_routing */
 908     FALSE,                     /* self_rewrite */
 909     FALSE,                     /* suffix_optional */
 910     FALSE,                     /* verify_only */
 911     TRUE,                      /* verify_recipient */
 912     TRUE,                      /* verify_sender */
 913     FALSE,                     /* uid_set */
 914     FALSE,                     /* unseen */
 915
 916     self_freeze,               /* self_code */
 917     (uid_t)(-1),               /* uid */
 918     (gid_t)(-1),               /* gid */
 919
 920     NULL,                      /* fallback_hostlist */
 921     NULL,                      /* transport instance */
 922     NULL,                      /* pass_router */
 923     NULL                       /* redirect_router */
 924 };
 925
 926 ip_address_item *running_interfaces = NULL;
 927 BOOL    running_in_test_harness = FALSE;
 928
 929 /* This is a weird one. The following string gets patched in the binary by the
 930 script that sets up a copy of Exim for running in the test harness. It seems
 931 that compilers are now clever, and share constant strings if they can.
 932 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
 933 make use of the end of this string in order to save space. So the patching then
 934 wrecks this. We default this optimization by adding some additional characters
 935 onto the end of the string. */
 936
 937 uschar *running_status         = US">>>running<<<" "\0EXTRA";
 938
 939 int     runrc                  = 0;
 940
 941 uschar *search_error_message   = NULL;
 942 BOOL    search_find_defer      = FALSE;
 943 uschar *self_hostname          = NULL;
 944 uschar *sender_address         = NULL;
 945 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
 946 uschar *sender_address_data    = NULL;
 947 BOOL    sender_address_forced  = FALSE;
 948 uschar *sender_address_unrewritten = NULL;
 949 uschar *sender_data            = NULL;
 950 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
 951 uschar *sender_fullhost        = NULL;
 952 uschar *sender_helo_name       = NULL;
 953 uschar **sender_host_aliases   = &no_aliases;
 954 uschar *sender_host_address    = NULL;
 955 uschar *sender_host_authenticated = NULL;
 956 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
 957 uschar *sender_host_name       = NULL;
 958 int     sender_host_port       = 0;
 959 BOOL    sender_host_notsocket  = FALSE;
 960 BOOL    sender_host_unknown    = FALSE;
 961 uschar *sender_ident           = NULL;
 962 BOOL    sender_local           = FALSE;
 963 uschar *sender_rcvhost         = NULL;
 964 BOOL    sender_set_untrusted   = FALSE;
 965 uschar *sender_unqualified_hosts = NULL;
 966 uschar *sender_verify_failure = NULL;
 967 address_item *sender_verified_list  = NULL;
 968 address_item *sender_verified_failed = NULL;
 969 int     sender_verified_rc     = -1;
 970 BOOL    sender_verified_responded = FALSE;
 971 volatile  BOOL sigalrm_seen    = FALSE;
 972 uschar **sighup_argv           = NULL;
 973 int     smtp_accept_count      = 0;
 974 BOOL    smtp_accept_keepalive  = TRUE;
 975 int     smtp_accept_max        = 20;
 976 int     smtp_accept_max_nonmail= 10;
 977 uschar *smtp_accept_max_nonmail_hosts = US"*";
 978 int     smtp_accept_max_per_connection = 1000;
 979 uschar *smtp_accept_max_per_host = NULL;
 980 int     smtp_accept_queue      = 0;
 981 int     smtp_accept_queue_per_connection = 10;
 982 int     smtp_accept_reserve    = 0;
 983 uschar *smtp_active_hostname   = NULL;
 984 BOOL    smtp_authenticated     = FALSE;
 985 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
 986                              "Exim $version_number $tod_full"
 987                              "\0<---------------Space to patch smtp_banner->";
 988 BOOL    smtp_batched_input     = FALSE;
 989 BOOL    smtp_check_spool_space = TRUE;
 990 uschar *smtp_command_argument  = NULL;
 991 int     smtp_connect_backlog   = 20;
 992 double  smtp_delay_mail        = 0.0;
 993 double  smtp_delay_rcpt        = 0.0;
 994 BOOL    smtp_enforce_sync      = TRUE;
 995 FILE   *smtp_in                = NULL;
 996 BOOL    smtp_input             = FALSE;
 997 int     smtp_load_reserve      = -1;
 998 int     smtp_mailcmd_count     = 0;
 999 FILE   *smtp_out               = NULL;
1000 uschar *smtp_etrn_command      = NULL;
1001 BOOL    smtp_etrn_serialize    = TRUE;
1002 int     smtp_max_synprot_errors= 3;
1003 int     smtp_max_unknown_commands = 3;
1004 uschar *smtp_ratelimit_hosts   = NULL;
1005 uschar *smtp_ratelimit_mail    = NULL;
1006 uschar *smtp_ratelimit_rcpt    = NULL;
1007 uschar *smtp_read_error        = US"";
1008 int     smtp_receive_timeout   = 5*60;
1009 uschar *smtp_reserve_hosts     = NULL;
1010 BOOL    smtp_return_error_details = FALSE;
1011 int     smtp_rlm_base          = 0;
1012 double  smtp_rlm_factor        = 0.0;
1013 int     smtp_rlm_limit         = 0;
1014 int     smtp_rlm_threshold     = INT_MAX;
1015 int     smtp_rlr_base          = 0;
1016 double  smtp_rlr_factor        = 0.0;
1017 int     smtp_rlr_limit         = 0;
1018 int     smtp_rlr_threshold     = INT_MAX;
1019 BOOL    smtp_use_pipelining    = FALSE;
1020 BOOL    smtp_use_size          = FALSE;
1021
1022 #ifdef WITH_CONTENT_SCAN
1023 uschar *spamd_address          = US"127.0.0.1 783";
1024 uschar *spam_bar               = NULL;
1025 uschar *spam_report            = NULL;
1026 uschar *spam_score             = NULL;
1027 uschar *spam_score_int         = NULL;
1028 #endif
1029 #ifdef EXPERIMENTAL_SPF
1030 uschar *spf_header_comment     = NULL;
1031 uschar *spf_received           = NULL;
1032 uschar *spf_result             = NULL;
1033 uschar *spf_smtp_comment       = NULL;
1034 #endif
1035
1036 BOOL    split_spool_directory  = FALSE;
1037 uschar *spool_directory        = US SPOOL_DIRECTORY
1038                            "\0<--------------Space to patch spool_directory->";
1039 #ifdef EXPERIMENTAL_SRS
1040 uschar *srs_config             = NULL;
1041 uschar *srs_db_address         = NULL;
1042 uschar *srs_db_key             = NULL;
1043 uschar *srs_orig_recipient     = NULL;
1044 uschar *srs_orig_sender        = NULL;
1045 uschar *srs_recipient          = NULL;
1046 uschar *srs_status             = NULL;
1047 #endif
1048 int     string_datestamp_offset= -1;
1049 BOOL    strip_excess_angle_brackets = FALSE;
1050 BOOL    strip_trailing_dot     = FALSE;
1051 uschar *submission_domain      = NULL;
1052 BOOL    submission_mode        = FALSE;
1053 BOOL    synchronous_delivery   = FALSE;
1054 BOOL    syslog_duplication     = TRUE;
1055 int     syslog_facility        = LOG_MAIL;
1056 uschar *syslog_processname     = US"exim";
1057 BOOL    syslog_timestamp       = TRUE;
1058 uschar *system_filter          = NULL;
1059
1060 uschar *system_filter_directory_transport = NULL;
1061 uschar *system_filter_file_transport = NULL;
1062 uschar *system_filter_pipe_transport = NULL;
1063 uschar *system_filter_reply_transport = NULL;
1064
1065 gid_t   system_filter_gid      = 0;
1066 BOOL    system_filter_gid_set  = FALSE;
1067 uid_t   system_filter_uid      = 0;
1068 BOOL    system_filter_uid_set  = FALSE;
1069 BOOL    system_filtering       = FALSE;
1070
1071 BOOL    tcp_nodelay            = TRUE;
1072 int     thismessage_size_limit = 0;
1073 int     timeout_frozen_after   = 0;
1074 BOOL    timestamps_utc         = FALSE;
1075
1076 transport_instance  *transports = NULL;
1077
1078 transport_instance  transport_defaults = {
1079     NULL,                     /* chain pointer */
1080     NULL,                     /* name */
1081     NULL,                     /* info */
1082     NULL,                     /* private options block pointer */
1083     NULL,                     /* driver name */
1084     NULL,                     /* setup entry point */
1085     1,                        /* batch_max */
1086     NULL,                     /* batch_id */
1087     NULL,                     /* home_dir */
1088     NULL,                     /* current_dir */
1089     TRUE,                     /* multi-domain */
1090     FALSE,                    /* overrides_hosts */
1091     100,                      /* max_addresses */
1092     500,                      /* connection_max_messages */
1093     FALSE,                    /* deliver_as_creator */
1094     FALSE,                    /* disable_logging */
1095     FALSE,                    /* initgroups */
1096     FALSE,                    /* uid_set */
1097     FALSE,                    /* gid_set */
1098     (uid_t)(-1),              /* uid */
1099     (gid_t)(-1),              /* gid */
1100     NULL,                     /* expand_uid */
1101     NULL,                     /* expand_gid */
1102     NULL,                     /* warn_message */
1103     NULL,                     /* shadow */
1104     NULL,                     /* shadow_condition */
1105     NULL,                     /* filter_command */
1106     NULL,                     /* add_headers */
1107     NULL,                     /* remove_headers */
1108     NULL,                     /* return_path */
1109     NULL,                     /* debug_string */
1110     NULL,                     /* message_size_limit */
1111     NULL,                     /* headers_rewrite */
1112     NULL,                     /* rewrite_rules */
1113     0,                        /* rewrite_existflags */
1114     300,                      /* filter_timeout */
1115     FALSE,                    /* body_only */
1116     FALSE,                    /* delivery_date_add */
1117     FALSE,                    /* envelope_to_add */
1118     FALSE,                    /* headers_only */
1119     FALSE,                    /* rcpt_include_affixes */
1120     FALSE,                    /* return_path_add */
1121     FALSE,                    /* return_output */
1122     FALSE,                    /* return_fail_output */
1123     FALSE,                    /* log_output */
1124     FALSE,                    /* log_fail_output */
1125     FALSE,                    /* log_defer_output */
1126     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1127                                  1 nor 0 so can detect unset */
1128 };
1129
1130 int     transport_count;
1131 uschar **transport_filter_argv  = NULL;
1132 int     transport_filter_timeout;
1133 BOOL    transport_filter_timed_out = FALSE;
1134 int     transport_write_timeout= 0;
1135
1136 tree_node  *tree_dns_fails     = NULL;
1137 tree_node  *tree_duplicates    = NULL;
1138 tree_node  *tree_nonrecipients = NULL;
1139 tree_node  *tree_unusable      = NULL;
1140
1141 BOOL    trusted_caller         = FALSE;
1142 gid_t  *trusted_groups         = NULL;
1143 uid_t  *trusted_users          = NULL;
1144 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1145
1146 uschar *unknown_login          = NULL;
1147 uschar *unknown_username       = NULL;
1148 uschar *untrusted_set_sender   = NULL;
1149
1150 /*  A regex for matching a "From_" line in an incoming message, in the form
1151
1152     From ph10 Fri Jan  5 12:35 GMT 1996
1153
1154 which  the "mail" commands send to the MTA (undocumented, of course), or in
1155 the  form
1156
1157     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1158
1159 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1160 Because  of variations in time formats, just match up to the minutes. That
1161 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1162 so  just require one digit for hours and minutes. The weekday is also absent
1163 in  some forms. */
1164
1165 uschar *uucp_from_pattern      = US
1166    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1167    "(?:"                                          /* Non-extracting bracket */
1168    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1169    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1170    ")"                                            /* End alternation */
1171    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1172
1173 uschar *uucp_from_sender       = US"$1";
1174
1175 uschar *warn_message_file      = NULL;
1176 uschar *warnmsg_delay          = NULL;
1177 uschar *warnmsg_recipients     = NULL;
1178 BOOL    write_rejectlog        = TRUE;
1179
1180 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2005";
1181 uschar *version_date           = US"?";
1182 uschar *version_cnumber        = US"????";
1183 uschar *version_string         = US"?";
1184
1185 int     warning_count          = 0;
1186
1187 /*  End of globals.c */