src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.6.2.2 2004/11/26 16:04:26 tom Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2004 */
   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 LOOKUP_IBASE
  66 uschar *ibase_servers          = NULL;
  67 #endif
  68
  69 #ifdef LOOKUP_LDAP
  70 uschar *eldap_default_servers  = NULL;
  71 int     eldap_version          = -1;
  72 #endif
  73
  74 #ifdef LOOKUP_MYSQL
  75 uschar *mysql_servers          = NULL;
  76 #endif
  77
  78 #ifdef LOOKUP_ORACLE
  79 uschar *oracle_servers         = NULL;
  80 #endif
  81
  82 #ifdef LOOKUP_PGSQL
  83 uschar *pgsql_servers          = NULL;
  84 #endif
  85
  86 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  87 BOOL    move_frozen_messages   = FALSE;
  88 #endif
  89
  90 /* These variables are outside the #ifdef because it keeps the code less
  91 cluttered in several places (e.g. during logging) if we can always refer to
  92 them. Also, the tls_ variables are now always visible. */
  93
  94 BOOL    tls_active             = -1;
  95 BOOL    tls_certificate_verified = FALSE;
  96 uschar *tls_cipher             = NULL;
  97 BOOL    tls_on_connect         = FALSE;
  98 uschar *tls_on_connect_ports   = NULL;
  99 uschar *tls_peerdn             = NULL;
 100
 101 #ifdef SUPPORT_TLS
 102 const pcre *regex_STARTTLS     = NULL;
 103 uschar *tls_advertise_hosts    = NULL;    /* This is deliberate */
 104 uschar *tls_certificate        = NULL;
 105 uschar *tls_crl                = NULL;
 106 uschar *tls_dhparam            = NULL;
 107 BOOL    tls_offered            = FALSE;
 108 uschar *tls_privatekey         = NULL;
 109 BOOL    tls_remember_esmtp     = FALSE;
 110 uschar *tls_require_ciphers    = NULL;
 111 uschar *tls_try_verify_hosts   = NULL;
 112 uschar *tls_verify_certificates= NULL;
 113 uschar *tls_verify_hosts       = NULL;
 114 #endif
 115
 116
 117 /* Input-reading functions for messages, so we can use special ones for
 118 incoming TCP/IP. The defaults use stdin. We never need these for any
 119 stand-alone tests. */
 120
 121 #ifndef STAND_ALONE
 122 int (*receive_getc)(void)      = stdin_getc;
 123 int (*receive_ungetc)(int)     = stdin_ungetc;
 124 int (*receive_feof)(void)      = stdin_feof;
 125 int (*receive_ferror)(void)    = stdin_ferror;
 126 #endif
 127
 128
 129 /* List of per-address expansion variables for clearing and saving/restoring
 130 when verifying one address while routing/verifying another. We have to have
 131 the size explicit, because it is referenced from more than one module. */
 132
 133 uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 134   &deliver_address_data,
 135   &deliver_domain,
 136   &deliver_domain_data,
 137   &deliver_domain_orig,
 138   &deliver_domain_parent,
 139   &deliver_localpart,
 140   &deliver_localpart_data,
 141   &deliver_localpart_orig,
 142   &deliver_localpart_parent,
 143   &deliver_localpart_prefix,
 144   &deliver_localpart_suffix,
 145   (uschar **)(&deliver_recipients),
 146   &deliver_host,
 147   &deliver_home,
 148   &address_file,
 149   &address_pipe,
 150   &self_hostname,
 151   NULL };
 152
 153 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 154
 155 /* General global variables */
 156
 157 tree_node *acl_anchor          = NULL;
 158 uschar *acl_not_smtp           = NULL;
 159 uschar *acl_smtp_auth          = NULL;
 160 uschar *acl_smtp_connect       = NULL;
 161 uschar *acl_smtp_data          = NULL;
 162 uschar *acl_smtp_etrn          = NULL;
 163 uschar *acl_smtp_expn          = NULL;
 164 uschar *acl_smtp_helo          = NULL;
 165 uschar *acl_smtp_mail          = NULL;
 166 uschar *acl_smtp_mailauth      = NULL;
 167 #ifdef WITH_CONTENT_SCAN
 168 uschar *acl_smtp_mime          = NULL;
 169 #endif
 170 uschar *acl_smtp_predata       = NULL;
 171 uschar *acl_smtp_quit          = NULL;
 172 uschar *acl_smtp_rcpt          = NULL;
 173 uschar *acl_smtp_starttls      = NULL;
 174 uschar *acl_smtp_vrfy          = NULL;
 175 BOOL    acl_temp_details       = FALSE;
 176 uschar *acl_var[ACL_C_MAX+ACL_M_MAX];
 177 uschar *acl_verify_message     = NULL;
 178 header_line *acl_warn_headers  = NULL;
 179 string_item *acl_warn_logged   = NULL;
 180
 181 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 182 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 183
 184 uschar *acl_wherenames[]       = { US"RCPT",
 185                                    US"MAIL",
 186                                    US"PREDATA",
 187 #ifdef WITH_CONTENT_SCAN
 188                                    US"MIME",
 189 #endif
 190                                    US"DATA",
 191                                    US"non-SMTP",
 192                                    US"AUTH",
 193                                    US"connection",
 194                                    US"ETRN",
 195                                    US"EXPN",
 196                                    US"EHLO or HELO",
 197                                    US"MAILAUTH",
 198                                    US"QUIT",
 199                                    US"STARTTLS",
 200                                    US"VRFY"
 201                                  };
 202
 203 int     acl_wherecodes[]       = { 550,     /* RCPT */
 204                                    550,     /* MAIL */
 205                                    550,     /* PREDATA */
 206 #ifdef WITH_CONTENT_SCAN
 207                                    550,     /* MIME */
 208 #endif
 209                                    550,     /* DATA */
 210                                    0,       /* not SMTP; not relevant */
 211                                    503,     /* AUTH */
 212                                    550,     /* connect */
 213                                    458,     /* ETRN */
 214                                    550,     /* EXPN */
 215                                    550,     /* HELO/EHLO */
 216                                    0,       /* MAILAUTH; not relevant */
 217                                    0,       /* QUIT; not relevant */
 218                                    550,     /* STARTTLS */
 219                                    252      /* VRFY */
 220                                  };
 221
 222 BOOL    active_local_from_check = FALSE;
 223 BOOL    active_local_sender_retain = FALSE;
 224 BOOL    accept_8bitmime        = FALSE;
 225 address_item  *addr_duplicate  = NULL;
 226
 227 address_item address_defaults = {
 228   NULL,                 /* next */
 229   NULL,                 /* parent */
 230   NULL,                 /* first */
 231   NULL,                 /* dupof */
 232   NULL,                 /* start_router */
 233   NULL,                 /* router */
 234   NULL,                 /* transport */
 235   NULL,                 /* host_list */
 236   NULL,                 /* host_used */
 237   NULL,                 /* fallback_hosts */
 238   NULL,                 /* reply */
 239   NULL,                 /* retries */
 240   NULL,                 /* address */
 241   NULL,                 /* unique */
 242   NULL,                 /* cc_local_part */
 243   NULL,                 /* lc_local_part */
 244   NULL,                 /* local_part */
 245   NULL,                 /* prefix */
 246   NULL,                 /* suffix */
 247   NULL,                 /* domain */
 248   NULL,                 /* address_retry_key */
 249   NULL,                 /* domain_retry_key */
 250   NULL,                 /* current_dir */
 251   NULL,                 /* home_dir */
 252   NULL,                 /* message */
 253   NULL,                 /* user_message */
 254   NULL,                 /* onetime_parent */
 255   NULL,                 /* pipe_expandn */
 256   NULL,                 /* return_filename */
 257   NULL,                 /* self_hostname */
 258   NULL,                 /* shadow_message */
 259   #ifdef SUPPORT_TLS
 260   NULL,                 /* cipher */
 261   NULL,                 /* peerdn */
 262   #endif
 263   (uid_t)(-1),          /* uid */
 264   (gid_t)(-1),          /* gid */
 265   0,                    /* flags */
 266   { 0 },                /* domain_cache - any larger array should be zeroed */
 267   { 0 },                /* localpart_cache - ditto */
 268   -1,                   /* mode */
 269   0,                    /* more_errno */
 270   ERRNO_UNKNOWNERROR,   /* basic_errno */
 271   0,                    /* child_count */
 272   -1,                   /* return_file */
 273   SPECIAL_NONE,         /* special_action */
 274   DEFER,                /* transport_return */
 275   {                     /* fields that are propagated to children */
 276     NULL,               /* address_data */
 277     NULL,               /* domain_data */
 278     NULL,               /* localpart_data */
 279     NULL,               /* errors_address */
 280     NULL,               /* extra_headers */
 281     NULL,               /* remove_headers */
 282   }
 283 };
 284
 285 uschar *address_file           = NULL;
 286 uschar *address_pipe           = NULL;
 287 BOOL    address_test_mode      = FALSE;
 288 tree_node *addresslist_anchor  = NULL;
 289 int     addresslist_count      = 0;
 290 gid_t  *admin_groups           = NULL;
 291 BOOL    admin_user             = FALSE;
 292 BOOL    allow_domain_literals  = FALSE;
 293 BOOL    allow_mx_to_ip         = FALSE;
 294 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 295 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 296 BOOL    allow_utf8_domains     = FALSE;
 297 uschar *authenticated_id       = NULL;
 298 uschar *authenticated_sender   = NULL;
 299 BOOL    authentication_failed  = FALSE;
 300 auth_instance  *auths          = NULL;
 301 uschar *auth_advertise_hosts   = US"*";
 302 auth_instance auth_defaults    = {
 303     NULL,                      /* chain pointer */
 304     NULL,                      /* name */
 305     NULL,                      /* info */
 306     NULL,                      /* private options block pointer */
 307     NULL,                      /* driver_name */
 308     NULL,                      /* advertise_condition */
 309     NULL,                      /* public_name */
 310     NULL,                      /* set_id */
 311     NULL,                      /* server_mail_auth_condition */
 312     NULL,                      /* server_debug_string */
 313     FALSE,                     /* client */
 314     FALSE,                     /* server */
 315     FALSE                      /* advertised */
 316 };
 317
 318 uschar *auth_defer_msg         = US"reason not recorded";
 319 uschar *auth_defer_user_msg    = US"";
 320 int     auto_thaw              = 0;
 321 #ifdef WITH_CONTENT_SCAN
 322 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 323 #endif
 324
 325 BOOL    background_daemon      = TRUE;
 326 uschar *base62_chars=
 327     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 328 uschar *bi_command             = NULL;
 329 uschar *big_buffer             = NULL;
 330 int     big_buffer_size        = BIG_BUFFER_SIZE;
 331 int     body_linecount         = 0;
 332 int     body_zerocount         = 0;
 333 uschar *bounce_message_file    = NULL;
 334 uschar *bounce_message_text    = NULL;
 335 uschar *bounce_recipient       = NULL;
 336 BOOL    bounce_return_body     = TRUE;
 337 BOOL    bounce_return_message  = TRUE;
 338 int     bounce_return_size_limit = 100*1024;
 339 uschar *bounce_sender_authentication = NULL;
 340 int     bsmtp_transaction_linecount = 0;
 341
 342 int     callout_cache_domain_positive_expire = 7*24*60*60;
 343 int     callout_cache_domain_negative_expire = 3*60*60;
 344 int     callout_cache_positive_expire = 24*60*60;
 345 int     callout_cache_negative_expire = 2*60*60;
 346 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 347 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$";
 348 int     check_log_inodes       = 0;
 349 int     check_log_space        = 0;
 350 int     check_spool_inodes     = 0;
 351 int     check_spool_space      = 0;
 352 int     clmacro_count          = 0;
 353 uschar *clmacros[MAX_CLMACROS];
 354 BOOL    config_changed         = FALSE;
 355 FILE   *config_file            = NULL;
 356 uschar *config_filename        = NULL;
 357 int     config_lineno          = 0;
 358 #ifdef CONFIGURE_GROUP
 359 gid_t   config_gid             = CONFIGURE_GROUP;
 360 #endif
 361 uschar *config_main_filelist   = US CONFIGURE_FILE
 362                          "\0<-----------Space to patch configure_filename->";
 363 uschar *config_main_filename   = NULL;
 364
 365 #ifdef CONFIGURE_OWNER
 366 uid_t   config_uid             = CONFIGURE_OWNER;
 367 #endif
 368
 369 int     connection_max_messages= -1;
 370 uschar *continue_hostname      = NULL;
 371 uschar *continue_host_address  = NULL;
 372 BOOL    continue_more          = FALSE;
 373 int     continue_sequence      = 1;
 374 uschar *continue_transport     = NULL;
 375
 376 BOOL    daemon_listen          = FALSE;
 377 uschar *daemon_smtp_port       = US"smtp";
 378 BOOL    debug_daemon           = FALSE;
 379 int     debug_fd               = -1;
 380 FILE   *debug_file             = NULL;
 381 bit_table debug_options[]      = {
 382   { US"acl",            D_acl },
 383   { US"all",            D_all },
 384   { US"auth",           D_auth },
 385   { US"deliver",        D_deliver },
 386   { US"dns",            D_dns },
 387   { US"dnsbl",          D_dnsbl },
 388   { US"exec",           D_exec },
 389   { US"expand",         D_expand },
 390   { US"filter",         D_filter },
 391   { US"hints_lookup",   D_hints_lookup },
 392   { US"host_lookup",    D_host_lookup },
 393   { US"ident",          D_ident },
 394   { US"interface",      D_interface },
 395   { US"lists",          D_lists },
 396   { US"load",           D_load },
 397   { US"local_scan",     D_local_scan },
 398   { US"lookup",         D_lookup },
 399   { US"memory",         D_memory },
 400   { US"pid",            D_pid },
 401   { US"process_info",   D_process_info },
 402   { US"queue_run",      D_queue_run },
 403   { US"receive",        D_receive },
 404   { US"resolver",       D_resolver },
 405   { US"retry",          D_retry },
 406   { US"rewrite",        D_rewrite },
 407   { US"route",          D_route },
 408   { US"timestamp",      D_timestamp },
 409   { US"tls",            D_tls },
 410   { US"transport",      D_transport },
 411   { US"uid",            D_uid },
 412   { US"verify",         D_verify }
 413 };
 414 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 415 unsigned int debug_selector    = 0;
 416 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 417 uschar *delay_warning_condition= US"${if match{$h_precedence:}{(?i)bulk|list|junk}{no}{yes}}";
 418 BOOL    delivery_date_remove   = TRUE;
 419 uschar *deliver_address_data   = NULL;
 420 int     deliver_datafile       = -1;
 421 uschar *deliver_domain         = NULL;
 422 uschar *deliver_domain_data    = NULL;
 423 uschar *deliver_domain_orig    = NULL;
 424 uschar *deliver_domain_parent  = NULL;
 425 BOOL    deliver_drop_privilege = FALSE;
 426 BOOL    deliver_firsttime      = FALSE;
 427 BOOL    deliver_force          = FALSE;
 428 BOOL    deliver_freeze         = FALSE;
 429 int     deliver_frozen_at      = 0;
 430 uschar *deliver_home           = NULL;
 431 uschar *deliver_host           = NULL;
 432 uschar *deliver_host_address   = NULL;
 433 uschar *deliver_in_buffer      = NULL;
 434 ino_t   deliver_inode          = 0;
 435 uschar *deliver_localpart      = NULL;
 436 uschar *deliver_localpart_data = NULL;
 437 uschar *deliver_localpart_orig = NULL;
 438 uschar *deliver_localpart_parent = NULL;
 439 uschar *deliver_localpart_prefix = NULL;
 440 uschar *deliver_localpart_suffix = NULL;
 441 BOOL    deliver_force_thaw     = FALSE;
 442 BOOL    deliver_manual_thaw    = FALSE;
 443 uschar *deliver_out_buffer     = NULL;
 444 int     deliver_queue_load_max = -1;
 445 address_item  *deliver_recipients = NULL;
 446 uschar *deliver_selectstring   = NULL;
 447 BOOL    deliver_selectstring_regex = FALSE;
 448 uschar *deliver_selectstring_sender = NULL;
 449 BOOL    deliver_selectstring_sender_regex = FALSE;
 450 BOOL    disable_logging        = FALSE;
 451
 452 uschar *dns_again_means_nonexist = NULL;
 453 uschar *dns_ipv4_lookup        = NULL;
 454 int     dns_retrans            = 0;
 455 int     dns_retry              = 0;
 456 uschar *dnslist_domain         = NULL;
 457 uschar *dnslist_text           = NULL;
 458 uschar *dnslist_value          = NULL;
 459 tree_node *domainlist_anchor   = NULL;
 460 int     domainlist_count       = 0;
 461 BOOL    dont_deliver           = FALSE;
 462 BOOL    dot_ends               = TRUE;
 463 BOOL    drop_cr                = FALSE;         /* No longer used */
 464
 465 BOOL    enable_dollar_recipients = FALSE;
 466 BOOL    envelope_to_remove     = TRUE;
 467 int     errno_quota            = ERRNO_QUOTA;
 468 uschar *errors_copy            = NULL;
 469 int     error_handling         = ERRORS_SENDER;
 470 uschar *errors_reply_to        = NULL;
 471 int     errors_sender_rc       = EXIT_FAILURE;
 472
 473 gid_t   exim_gid               = EXIM_GID;
 474 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 475 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 476                         "\0<---------------Space to patch exim_path->";
 477 uid_t   exim_uid               = EXIM_UID;
 478 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 479 int     expand_forbid          = 0;
 480 int     expand_nlength[EXPAND_MAXN+1];
 481 int     expand_nmax            = -1;
 482 uschar *expand_nstring[EXPAND_MAXN+1];
 483 BOOL    expand_string_forcedfail = FALSE;
 484 uschar *expand_string_message;
 485 BOOL    extract_addresses_remove_arguments = TRUE;
 486 uschar *extra_local_interfaces = NULL;
 487
 488 #ifdef WITH_CONTENT_SCAN
 489 BOOL    fake_reject            = FALSE;
 490 #endif
 491 int     filter_n[FILTER_VARIABLE_COUNT];
 492 BOOL    filter_running         = FALSE;
 493 int     filter_sn[FILTER_VARIABLE_COUNT];
 494 uschar *filter_test            = NULL;
 495 uschar *filter_thisaddress     = NULL;
 496 int     finduser_retries       = 0;
 497 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 498 uschar *freeze_tell            = NULL;
 499 uschar *fudged_queue_times     = US"";
 500
 501 uschar *gecos_name             = NULL;
 502 uschar *gecos_pattern          = NULL;
 503 rewrite_rule  *global_rewrite_rules = NULL;
 504
 505 uschar *headers_charset        = US HEADERS_CHARSET;
 506 int     header_insert_maxlen   = 64 * 1024;
 507 header_line  *header_last      = NULL;
 508 header_line  *header_list      = NULL;
 509 int     header_maxsize         = HEADER_MAXSIZE;
 510 int     header_line_maxsize    = 0;
 511
 512 header_name header_names[] = {
 513   { US"bcc",            3, TRUE,  htype_bcc },
 514   { US"cc",             2, TRUE,  htype_cc },
 515   { US"date",           4, TRUE,  htype_date },
 516   { US"delivery-date", 13, FALSE, htype_delivery_date },
 517   { US"envelope-to",   11, FALSE, htype_envelope_to },
 518   { US"from",           4, TRUE,  htype_from },
 519   { US"message-id",    10, TRUE,  htype_id },
 520   { US"received",       8, FALSE, htype_received },
 521   { US"reply-to",       8, FALSE, htype_reply_to },
 522   { US"return-path",   11, FALSE, htype_return_path },
 523   { US"sender",         6, TRUE,  htype_sender },
 524   { US"subject",        7, FALSE, htype_subject },
 525   { US"to",             2, TRUE,  htype_to }
 526 };
 527
 528 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 529
 530 BOOL    header_rewritten       = FALSE;
 531 uschar *helo_accept_junk_hosts = NULL;
 532 uschar *helo_allow_chars       = US"";
 533 uschar *helo_lookup_domains    = US"@ : @[]";
 534 uschar *helo_try_verify_hosts  = NULL;
 535 BOOL    helo_verified          = FALSE;
 536 uschar *helo_verify_hosts      = NULL;
 537 uschar *hex_digits             = US"0123456789abcdef";
 538 uschar *hold_domains           = NULL;
 539 BOOL    host_checking          = FALSE;
 540 BOOL    host_checking_callout  = FALSE;
 541 uschar *host_data              = NULL;
 542 BOOL    host_find_failed_syntax= FALSE;
 543 uschar *host_lookup            = NULL;
 544 BOOL    host_lookup_failed     = FALSE;
 545 uschar *host_lookup_order      = US"bydns:byaddr";
 546 uschar *host_lookup_msg        = US"";
 547 int     host_number            = 0;
 548 uschar *host_number_string     = NULL;
 549 uschar *host_reject_connection = NULL;
 550 tree_node *hostlist_anchor     = NULL;
 551 int     hostlist_count         = 0;
 552 uschar *hosts_treat_as_local   = NULL;
 553 uschar *hosts_connection_nolog = NULL;
 554
 555 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 556 BOOL    ignore_fromline_local  = FALSE;
 557 uschar *ignore_fromline_hosts  = NULL;
 558 uschar *interface_address      = NULL;
 559 int     interface_port         = -1;
 560 BOOL    is_inetd               = FALSE;
 561
 562 int     journal_fd             = -1;
 563
 564 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 565
 566 uschar *eldap_dn               = NULL;
 567 int     load_average           = -2;
 568 BOOL    local_error_message    = FALSE;
 569 BOOL    local_from_check       = TRUE;
 570 uschar *local_from_prefix      = NULL;
 571 uschar *local_from_suffix      = NULL;
 572
 573 #if HAVE_IPV6
 574 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 575 #else
 576 uschar *local_interfaces       = US"0.0.0.0";
 577 #endif
 578
 579 uschar *local_scan_data        = NULL;
 580 int     local_scan_timeout     = 5*60;
 581 BOOL    local_sender_retain    = FALSE;
 582 gid_t   local_user_gid         = (gid_t)(-1);
 583 uid_t   local_user_uid         = (uid_t)(-1);
 584
 585 tree_node *localpartlist_anchor= NULL;
 586 int     localpartlist_count    = 0;
 587 uschar *log_buffer             = NULL;
 588 unsigned int log_extra_selector = LX_default;
 589 uschar *log_file_path          = US LOG_FILE_PATH
 590                            "\0<--------------Space to patch log_file_path->";
 591
 592 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 593 are the ones that get put into log_write_selector. They can be used in calls to
 594 log_write() to test for the bit. The options with LX_xxx identifiers have
 595 values greater than 0x80000000 and are put int log_extra_selector (without the
 596 top bit). They are never used in calls to log_write(), but are tested
 597 independently. This separation became necessary when the number of log
 598 selectors was getting close to filling a 32-bit word. */
 599
 600 bit_table log_options[]        = {
 601   { US"address_rewrite",              L_address_rewrite },
 602   { US"all",                          L_all },
 603   { US"all_parents",                  L_all_parents },
 604   { US"arguments",                    LX_arguments },
 605   { US"connection_reject",            L_connection_reject },
 606   { US"delay_delivery",               L_delay_delivery },
 607   { US"deliver_time",                 LX_deliver_time },
 608   { US"delivery_size",                LX_delivery_size },
 609   { US"dnslist_defer",                L_dnslist_defer },
 610   { US"etrn",                         L_etrn },
 611   { US"host_lookup_failed",           L_host_lookup_failed },
 612   { US"ident_timeout",                LX_ident_timeout },
 613   { US"incoming_interface",           LX_incoming_interface },
 614   { US"incoming_port",                LX_incoming_port },
 615   { US"lost_incoming_connection",     L_lost_incoming_connection },
 616   { US"outgoing_port",                LX_outgoing_port },
 617   { US"queue_run",                    L_queue_run },
 618   { US"queue_time",                   LX_queue_time },
 619   { US"received_recipients",          LX_received_recipients },
 620   { US"received_sender",              LX_received_sender },
 621   { US"rejected_header",              LX_rejected_header },
 622   { US"rejected_headers",             LX_rejected_header },
 623   { US"retry_defer",                  L_retry_defer },
 624   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 625   { US"sender_on_delivery",           LX_sender_on_delivery },
 626   { US"size_reject",                  L_size_reject },
 627   { US"skip_delivery",                L_skip_delivery },
 628   { US"smtp_confirmation",            LX_smtp_confirmation },
 629   { US"smtp_connection",              L_smtp_connection },
 630   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 631   { US"smtp_protocol_error",          L_smtp_protocol_error },
 632   { US"smtp_syntax_error",            L_smtp_syntax_error },
 633   { US"subject",                      LX_subject },
 634   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 635   { US"tls_cipher",                   LX_tls_cipher },
 636   { US"tls_peerdn",                   LX_tls_peerdn }
 637 };
 638
 639 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 640 unsigned int log_write_selector= L_default;
 641 uschar *log_selector_string    = NULL;
 642 FILE   *log_stderr             = NULL;
 643 BOOL    log_testing_mode       = FALSE;
 644 BOOL    log_timezone           = FALSE;
 645 uschar *login_sender_address   = NULL;
 646 int     lookup_open_max        = 25;
 647 uschar *lookup_value           = NULL;
 648
 649 macro_item  *macros            = NULL;
 650 uschar *mailstore_basename     = NULL;
 651 #ifdef WITH_CONTENT_SCAN
 652 uschar *malware_name           = NULL;  /* Virus Name */
 653 #endif
 654 int     max_username_length    = 0;
 655 int     message_age            = 0;
 656 uschar *message_body           = NULL;
 657 uschar *message_body_end       = NULL;
 658 int     message_body_size      = 0;
 659 int     message_body_visible   = 500;
 660 int     message_ended          = END_NOTSTARTED;
 661 uschar *message_headers        = NULL;
 662 uschar *message_id;
 663 uschar *message_id_domain      = NULL;
 664 uschar *message_id_text        = NULL;
 665 struct timeval message_id_tv   = { 0, 0 };
 666 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 667 uschar *message_id_external;
 668 int     message_linecount      = 0;
 669 BOOL    message_logs           = TRUE;
 670 int     message_size           = 0;
 671 uschar *message_size_limit     = US"50M";
 672 uschar  message_subdir[2]      = { 0, 0 };
 673 uschar *message_reference      = NULL;
 674
 675 /* MIME ACL expandables */
 676 #ifdef WITH_CONTENT_SCAN
 677 uschar *mime_anomaly_level     = NULL;
 678 uschar *mime_anomaly_text      = NULL;
 679 uschar *mime_boundary          = NULL;
 680 uschar *mime_charset           = NULL;
 681 uschar *mime_content_description = NULL;
 682 uschar *mime_content_disposition = NULL;
 683 uschar *mime_content_id        = NULL;
 684 unsigned int mime_content_size = 0;
 685 uschar *mime_content_transfer_encoding = NULL;
 686 uschar *mime_content_type      = NULL;
 687 uschar *mime_decoded_filename  = NULL;
 688 uschar *mime_filename          = NULL;
 689 int     mime_is_multipart      = 0;
 690 int     mime_is_coverletter    = 0;
 691 int     mime_is_rfc822         = 0;
 692 int     mime_part_count        = -1;
 693 #endif
 694
 695 BOOL    mua_wrapper            = FALSE;
 696
 697 uid_t  *never_users            = NULL;
 698 #ifdef WITH_CONTENT_SCAN
 699 BOOL    no_mbox_unspool        = FALSE;
 700 #endif
 701 BOOL    no_multiline_responses = FALSE;
 702
 703 uid_t   original_euid;
 704 gid_t   originator_gid;
 705 uschar *originator_login       = NULL;
 706 uschar *originator_name        = NULL;
 707 uid_t   originator_uid;
 708 uschar *override_local_interfaces = NULL;
 709 uschar *override_pid_file_path = NULL;
 710
 711 BOOL    parse_allow_group      = FALSE;
 712 BOOL    parse_found_group      = FALSE;
 713 uschar *percent_hack_domains   = NULL;
 714 uschar *pid_file_path          = US PID_FILE_PATH
 715                            "\0<--------------Space to patch pid_file_path->";
 716 uschar *pipelining_advertise_hosts = US"*";
 717 BOOL    preserve_message_logs  = FALSE;
 718 uschar *primary_hostname       = NULL;
 719 BOOL    print_topbitchars      = FALSE;
 720 uschar  process_info[PROCESS_INFO_SIZE];
 721 uschar *process_log_path       = NULL;
 722 BOOL    prod_requires_admin    = TRUE;
 723
 724 uschar *qualify_domain_recipient = NULL;
 725 uschar *qualify_domain_sender  = NULL;
 726 BOOL    queue_2stage           = FALSE;
 727 uschar *queue_domains          = NULL;
 728 int     queue_interval         = -1;
 729 BOOL    queue_list_requires_admin = TRUE;
 730 BOOL    queue_only             = FALSE;
 731 uschar *queue_only_file        = NULL;
 732 int     queue_only_load        = -1;
 733 BOOL    queue_only_override    = TRUE;
 734 BOOL    queue_only_policy      = FALSE;
 735 BOOL    queue_run_first_delivery = FALSE;
 736 BOOL    queue_run_force        = FALSE;
 737 BOOL    queue_run_in_order     = FALSE;
 738 BOOL    queue_run_local        = FALSE;
 739 int     queue_run_max          = 5;
 740 pid_t   queue_run_pid          = (pid_t)0;
 741 int     queue_run_pipe         = -1;
 742 BOOL    queue_running          = FALSE;
 743 BOOL    queue_smtp             = FALSE;
 744 uschar *queue_smtp_domains     = NULL;
 745
 746 unsigned int random_seed       = 0;
 747 uschar *raw_active_hostname    = NULL;
 748 uschar *raw_sender             = NULL;
 749 uschar **raw_recipients        = NULL;
 750 int     raw_recipients_count   = 0;
 751
 752 int     rcpt_count             = 0;
 753 int     rcpt_fail_count        = 0;
 754 int     rcpt_defer_count       = 0;
 755 gid_t   real_gid;
 756 uid_t   real_uid;
 757 BOOL    really_exim            = TRUE;
 758 BOOL    receive_call_bombout   = FALSE;
 759 int     receive_linecount      = 0;
 760 int     receive_messagecount   = 0;
 761 int     receive_timeout        = 0;
 762 int     received_count         = 0;
 763 uschar *received_for           = NULL;
 764
 765 /*  This is the default text for Received headers generated by Exim. The
 766 date  will be automatically added on the end. */
 767
 768 uschar *received_header_text   = US
 769      "Received: "
 770      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 771      "{${if def:sender_ident {from $sender_ident }}"
 772      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 773      "by $primary_hostname "
 774      "${if def:received_protocol {with $received_protocol}} "
 775      #ifdef SUPPORT_TLS
 776      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 777      #endif
 778      "(Exim $version_number)\n\t"
 779      "id $message_id"
 780      "${if def:received_for {\n\tfor $received_for}}"
 781      "\0<---------------Space to patch received_header_text->";
 782
 783 int     received_headers_max   = 30;
 784 uschar *received_protocol      = NULL;
 785 int     received_time          = 0;
 786 uschar *recipient_data         = NULL;
 787 uschar *recipient_unqualified_hosts = NULL;
 788 uschar *recipient_verify_failure = NULL;
 789 int     recipients_count       = 0;
 790 BOOL    recipients_discarded   = FALSE;
 791 recipient_item  *recipients_list = NULL;
 792 int     recipients_list_max    = 0;
 793 int     recipients_max         = 0;
 794 BOOL    recipients_max_reject  = FALSE;
 795 const pcre *regex_AUTH         = NULL;
 796 const pcre *regex_check_dns_names = NULL;
 797 const pcre *regex_From         = NULL;
 798 const pcre *regex_PIPELINING   = NULL;
 799 const pcre *regex_SIZE         = NULL;
 800 const pcre *regex_ismsgid      = NULL;
 801 #ifdef WITH_CONTENT_SCAN
 802 uschar *regex_match_string     = NULL;
 803 #endif
 804 int     remote_delivery_count  = 0;
 805 int     remote_max_parallel    = 2;
 806 uschar *remote_sort_domains    = NULL;
 807 int     retry_data_expire      = 7*24*60*60;
 808 int     retry_interval_max     = 24*60*60;
 809 int     retry_maximum_timeout  = 0;        /* set from retry config */
 810 retry_config  *retries         = NULL;
 811 uschar *return_path            = NULL;
 812 BOOL    return_path_remove     = TRUE;
 813 int     rewrite_existflags     = 0;
 814 uschar *rfc1413_hosts          = US"*";
 815 int     rfc1413_query_timeout  = 30;
 816 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 817 uid_t   root_uid               = ROOT_UID;
 818
 819 router_instance  *routers  = NULL;
 820 router_instance  router_defaults = {
 821     NULL,                      /* chain pointer */
 822     NULL,                      /* name */
 823     NULL,                      /* info */
 824     NULL,                      /* private options block pointer */
 825     NULL,                      /* driver name */
 826
 827     NULL,                      /* address_data */
 828     NULL,                      /* cannot_route_message */
 829     NULL,                      /* condition */
 830     NULL,                      /* current_directory */
 831     NULL,                      /* debug_string */
 832     NULL,                      /* domains */
 833     NULL,                      /* errors_to */
 834     NULL,                      /* expand_gid */
 835     NULL,                      /* expand_uid */
 836     NULL,                      /* expand_more */
 837     NULL,                      /* expand_unseen */
 838     NULL,                      /* extra_headers */
 839     NULL,                      /* fallback_hosts */
 840     NULL,                      /* home_directory */
 841     NULL,                      /* ignore_target_hosts */
 842     NULL,                      /* local_parts */
 843     NULL,                      /* pass_router_name */
 844     NULL,                      /* prefix */
 845     NULL,                      /* redirect_router_name */
 846     NULL,                      /* remove_headers */
 847     NULL,                      /* require_files */
 848     NULL,                      /* router_home_directory */
 849     US"freeze",                /* self */
 850     NULL,                      /* senders */
 851     NULL,                      /* suffix */
 852     NULL,                      /* translate_ip_address */
 853     NULL,                      /* transport_name */
 854
 855     TRUE,                      /* address_test */
 856     TRUE,                      /* expn */
 857     FALSE,                     /* caseful_local_part */
 858     FALSE,                     /* check_local_user */
 859     FALSE,                     /* disable_logging */
 860     FALSE,                     /* fail_verify_recipient */
 861     FALSE,                     /* fail_verify_sender */
 862     FALSE,                     /* gid_set */
 863     FALSE,                     /* initgroups */
 864     TRUE_UNSET,                /* log_as_local */
 865     TRUE,                      /* more */
 866     FALSE,                     /* pass_on_timeout */
 867     FALSE,                     /* prefix_optional */
 868     TRUE,                      /* repeat_use */
 869     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
 870     FALSE,                     /* same_domain_copy_routing */
 871     FALSE,                     /* self_rewrite */
 872     FALSE,                     /* suffix_optional */
 873     FALSE,                     /* verify_only */
 874     TRUE,                      /* verify_recipient */
 875     TRUE,                      /* verify_sender */
 876     FALSE,                     /* uid_set */
 877     FALSE,                     /* unseen */
 878
 879     self_freeze,               /* self_code */
 880     (uid_t)(-1),               /* uid */
 881     (gid_t)(-1),               /* gid */
 882
 883     NULL,                      /* fallback_hostlist */
 884     NULL,                      /* transport instance */
 885     NULL,                      /* pass_router */
 886     NULL                       /* redirect_router */
 887 };
 888
 889 ip_address_item *running_interfaces = NULL;
 890 BOOL    running_in_test_harness = FALSE;
 891
 892 /* This is a weird one. The following string gets patched in the binary by the
 893 script that sets up a copy of Exim for running in the test harness. It seems
 894 that compilers are now clever, and share constant strings if they can.
 895 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
 896 make use of the end of this string in order to save space. So the patching then
 897 wrecks this. We default this optimization by adding some additional characters
 898 onto the end of the string. */
 899
 900 uschar *running_status         = US">>>running<<<" "\0EXTRA";
 901
 902 int     runrc                  = 0;
 903
 904 uschar *search_error_message   = NULL;
 905 BOOL    search_find_defer      = FALSE;
 906 uschar *self_hostname          = NULL;
 907 uschar *sender_address         = NULL;
 908 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
 909 uschar *sender_address_data    = NULL;
 910 BOOL    sender_address_forced  = FALSE;
 911 uschar *sender_address_unrewritten = NULL;
 912 uschar *sender_data            = NULL;
 913 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
 914 uschar *sender_fullhost        = NULL;
 915 uschar *sender_helo_name       = NULL;
 916 uschar **sender_host_aliases   = &no_aliases;
 917 uschar *sender_host_address    = NULL;
 918 uschar *sender_host_authenticated = NULL;
 919 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
 920 uschar *sender_host_name       = NULL;
 921 int     sender_host_port       = 0;
 922 BOOL    sender_host_notsocket  = FALSE;
 923 BOOL    sender_host_unknown    = FALSE;
 924 uschar *sender_ident           = NULL;
 925 BOOL    sender_local           = FALSE;
 926 uschar *sender_rcvhost         = NULL;
 927 BOOL    sender_set_untrusted   = FALSE;
 928 uschar *sender_unqualified_hosts = NULL;
 929 uschar *sender_verify_failure = NULL;
 930 address_item *sender_verified_list  = NULL;
 931 address_item *sender_verified_failed = NULL;
 932 int     sender_verified_rc     = -1;
 933 BOOL    sender_verified_responded = FALSE;
 934 volatile  BOOL sigalrm_seen    = FALSE;
 935 uschar **sighup_argv           = NULL;
 936 int     smtp_accept_count      = 0;
 937 BOOL    smtp_accept_keepalive  = TRUE;
 938 int     smtp_accept_max        = 20;
 939 int     smtp_accept_max_nonmail= 10;
 940 uschar *smtp_accept_max_nonmail_hosts = US"*";
 941 int     smtp_accept_max_per_connection = 1000;
 942 uschar *smtp_accept_max_per_host = NULL;
 943 int     smtp_accept_queue      = 0;
 944 int     smtp_accept_queue_per_connection = 10;
 945 int     smtp_accept_reserve    = 0;
 946 uschar *smtp_active_hostname   = NULL;
 947 BOOL    smtp_authenticated     = FALSE;
 948 uschar *smtp_banner            = US"$primary_hostname ESMTP "
 949                              "Exim $version_number $tod_full"
 950                              "\0<---------------Space to patch smtp_banner->";
 951 BOOL    smtp_batched_input     = FALSE;
 952 BOOL    smtp_check_spool_space = TRUE;
 953 uschar *smtp_command_argument  = NULL;
 954 int     smtp_connect_backlog   = 20;
 955 double  smtp_delay_mail        = 0.0;
 956 double  smtp_delay_rcpt        = 0.0;
 957 BOOL    smtp_enforce_sync      = TRUE;
 958 FILE   *smtp_in                = NULL;
 959 BOOL    smtp_input             = FALSE;
 960 int     smtp_load_reserve      = -1;
 961 int     smtp_mailcmd_count     = 0;
 962 FILE   *smtp_out               = NULL;
 963 uschar *smtp_etrn_command      = NULL;
 964 BOOL    smtp_etrn_serialize    = TRUE;
 965 int     smtp_max_synprot_errors= 3;
 966 int     smtp_max_unknown_commands = 3;
 967 uschar *smtp_ratelimit_hosts   = NULL;
 968 uschar *smtp_ratelimit_mail    = NULL;
 969 uschar *smtp_ratelimit_rcpt    = NULL;
 970 uschar *smtp_read_error        = US"";
 971 int     smtp_receive_timeout   = 5*60;
 972 uschar *smtp_reserve_hosts     = NULL;
 973 BOOL    smtp_return_error_details = FALSE;
 974 int     smtp_rlm_base          = 0;
 975 double  smtp_rlm_factor        = 0.0;
 976 int     smtp_rlm_limit         = 0;
 977 int     smtp_rlm_threshold     = INT_MAX;
 978 int     smtp_rlr_base          = 0;
 979 double  smtp_rlr_factor        = 0.0;
 980 int     smtp_rlr_limit         = 0;
 981 int     smtp_rlr_threshold     = INT_MAX;
 982 BOOL    smtp_use_pipelining    = FALSE;
 983 BOOL    smtp_use_size          = FALSE;
 984
 985 #ifdef WITH_CONTENT_SCAN
 986 uschar *spamd_address          = US"127.0.0.1 783";
 987 uschar *spam_bar               = NULL;
 988 uschar *spam_report            = NULL;
 989 uschar *spam_score             = NULL;
 990 uschar *spam_score_int         = NULL;
 991 #endif
 992
 993 BOOL    split_spool_directory  = FALSE;
 994 uschar *spool_directory        = US SPOOL_DIRECTORY
 995                            "\0<--------------Space to patch spool_directory->";
 996 int     string_datestamp_offset= -1;
 997 BOOL    strip_excess_angle_brackets = FALSE;
 998 BOOL    strip_trailing_dot     = FALSE;
 999 uschar *submission_domain      = NULL;
1000 BOOL    submission_mode        = FALSE;
1001 BOOL    synchronous_delivery   = FALSE;
1002 BOOL    syslog_duplication     = TRUE;
1003 int     syslog_facility        = LOG_MAIL;
1004 uschar *syslog_processname     = US"exim";
1005 BOOL    syslog_timestamp       = TRUE;
1006 uschar *system_filter          = NULL;
1007
1008 uschar *system_filter_directory_transport = NULL;
1009 uschar *system_filter_file_transport = NULL;
1010 uschar *system_filter_pipe_transport = NULL;
1011 uschar *system_filter_reply_transport = NULL;
1012
1013 gid_t   system_filter_gid      = 0;
1014 BOOL    system_filter_gid_set  = FALSE;
1015 uid_t   system_filter_uid      = 0;
1016 BOOL    system_filter_uid_set  = FALSE;
1017 BOOL    system_filtering       = FALSE;
1018
1019 BOOL    tcp_nodelay            = TRUE;
1020 int     thismessage_size_limit = 0;
1021 int     timeout_frozen_after   = 0;
1022 BOOL    timestamps_utc         = FALSE;
1023
1024 transport_instance  *transports = NULL;
1025
1026 transport_instance  transport_defaults = {
1027     NULL,                     /* chain pointer */
1028     NULL,                     /* name */
1029     NULL,                     /* info */
1030     NULL,                     /* private options block pointer */
1031     NULL,                     /* driver name */
1032     NULL,                     /* setup entry point */
1033     1,                        /* batch_max */
1034     NULL,                     /* batch_id */
1035     NULL,                     /* home_dir */
1036     NULL,                     /* current_dir */
1037     TRUE,                     /* multi-domain */
1038     FALSE,                    /* overrides_hosts */
1039     100,                      /* max_addresses */
1040     500,                      /* connection_max_messages */
1041     FALSE,                    /* deliver_as_creator */
1042     FALSE,                    /* disable_logging */
1043     FALSE,                    /* initgroups */
1044     FALSE,                    /* uid_set */
1045     FALSE,                    /* gid_set */
1046     (uid_t)(-1),              /* uid */
1047     (gid_t)(-1),              /* gid */
1048     NULL,                     /* expand_uid */
1049     NULL,                     /* expand_gid */
1050     NULL,                     /* warn_message */
1051     NULL,                     /* shadow */
1052     NULL,                     /* shadow_condition */
1053     NULL,                     /* filter_command */
1054     NULL,                     /* add_headers */
1055     NULL,                     /* remove_headers */
1056     NULL,                     /* return_path */
1057     NULL,                     /* debug_string */
1058     NULL,                     /* message_size_limit */
1059     NULL,                     /* headers_rewrite */
1060     NULL,                     /* rewrite_rules */
1061     0,                        /* rewrite_existflags */
1062     300,                      /* filter_timeout */
1063     FALSE,                    /* body_only */
1064     FALSE,                    /* delivery_date_add */
1065     FALSE,                    /* envelope_to_add */
1066     FALSE,                    /* headers_only */
1067     FALSE,                    /* rcpt_include_affixes */
1068     FALSE,                    /* return_path_add */
1069     FALSE,                    /* return_output */
1070     FALSE,                    /* return_fail_output */
1071     FALSE,                    /* log_output */
1072     FALSE,                    /* log_fail_output */
1073     FALSE,                    /* log_defer_output */
1074     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1075                                  1 nor 0 so can detect unset */
1076 };
1077
1078 int     transport_count;
1079 uschar **transport_filter_argv  = NULL;
1080 int     transport_filter_timeout;
1081 int     transport_write_timeout= 0;
1082
1083 tree_node  *tree_dns_fails     = NULL;
1084 tree_node  *tree_duplicates    = NULL;
1085 tree_node  *tree_nonrecipients = NULL;
1086 tree_node  *tree_unusable      = NULL;
1087
1088 BOOL    trusted_caller         = FALSE;
1089 gid_t  *trusted_groups         = NULL;
1090 uid_t  *trusted_users          = NULL;
1091 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1092
1093 uschar *unknown_login          = NULL;
1094 uschar *unknown_username       = NULL;
1095 uschar *untrusted_set_sender   = NULL;
1096
1097 /*  A regex for matching a "From_" line in an incoming message, in the form
1098
1099     From ph10 Fri Jan  5 12:35 GMT 1996
1100
1101 which  the "mail" commands send to the MTA (undocumented, of course), or in
1102 the  form
1103
1104     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1105
1106 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1107 Because  of variations in time formats, just match up to the minutes. That
1108 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1109 so  just require one digit for hours and minutes. The weekday is also absent
1110 in  some forms. */
1111
1112 uschar *uucp_from_pattern      = US
1113    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1114    "(?:"                                          /* Non-extracting bracket */
1115    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1116    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1117    ")"                                            /* End alternation */
1118    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1119
1120 uschar *uucp_from_sender       = US"$1";
1121
1122 uschar *warn_message_file      = NULL;
1123 uschar *warnmsg_delay          = NULL;
1124 uschar *warnmsg_recipients     = NULL;
1125 BOOL    write_rejectlog        = TRUE;
1126
1127 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2004";
1128 uschar *version_date           = US"?";
1129 uschar *version_cnumber        = US"????";
1130 uschar *version_string         = US"?";
1131
1132 int     warning_count          = 0;
1133
1134 /*  End of globals.c */