src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.19 2005/03/08 15:32:02 tom 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 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 #ifdef EXPERIMENTAL_BRIGHTMAIL
 332 uschar *bmi_alt_location       = NULL;
 333 uschar *bmi_base64_tracker_verdict = NULL;
 334 uschar *bmi_base64_verdict     = NULL;
 335 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 336 int     bmi_deliver            = 1;
 337 int     bmi_run                = 0;
 338 uschar *bmi_verdicts           = NULL;
 339 #endif
 340 int     body_linecount         = 0;
 341 int     body_zerocount         = 0;
 342 uschar *bounce_message_file    = NULL;
 343 uschar *bounce_message_text    = NULL;
 344 uschar *bounce_recipient       = NULL;
 345 BOOL    bounce_return_body     = TRUE;
 346 BOOL    bounce_return_message  = TRUE;
 347 int     bounce_return_size_limit = 100*1024;
 348 uschar *bounce_sender_authentication = NULL;
 349 int     bsmtp_transaction_linecount = 0;
 350
 351 int     callout_cache_domain_positive_expire = 7*24*60*60;
 352 int     callout_cache_domain_negative_expire = 3*60*60;
 353 int     callout_cache_positive_expire = 24*60*60;
 354 int     callout_cache_negative_expire = 2*60*60;
 355 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 356 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W_](?>[a-z0-9-]*[^\\W_])?)+$";
 357 int     check_log_inodes       = 0;
 358 int     check_log_space        = 0;
 359 int     check_spool_inodes     = 0;
 360 int     check_spool_space      = 0;
 361 int     clmacro_count          = 0;
 362 uschar *clmacros[MAX_CLMACROS];
 363 BOOL    config_changed         = FALSE;
 364 FILE   *config_file            = NULL;
 365 uschar *config_filename        = NULL;
 366 int     config_lineno          = 0;
 367 #ifdef CONFIGURE_GROUP
 368 gid_t   config_gid             = CONFIGURE_GROUP;
 369 #endif
 370 uschar *config_main_filelist   = US CONFIGURE_FILE
 371                          "\0<-----------Space to patch configure_filename->";
 372 uschar *config_main_filename   = NULL;
 373
 374 #ifdef CONFIGURE_OWNER
 375 uid_t   config_uid             = CONFIGURE_OWNER;
 376 #endif
 377
 378 int     connection_max_messages= -1;
 379 uschar *continue_hostname      = NULL;
 380 uschar *continue_host_address  = NULL;
 381 BOOL    continue_more          = FALSE;
 382 int     continue_sequence      = 1;
 383 uschar *continue_transport     = NULL;
 384
 385 BOOL    daemon_listen          = FALSE;
 386 uschar *daemon_smtp_port       = US"smtp";
 387 BOOL    debug_daemon           = FALSE;
 388 int     debug_fd               = -1;
 389 FILE   *debug_file             = NULL;
 390 bit_table debug_options[]      = {
 391   { US"acl",            D_acl },
 392   { US"all",            D_all },
 393   { US"auth",           D_auth },
 394   { US"deliver",        D_deliver },
 395   { US"dns",            D_dns },
 396   { US"dnsbl",          D_dnsbl },
 397   { US"exec",           D_exec },
 398   { US"expand",         D_expand },
 399   { US"filter",         D_filter },
 400   { US"hints_lookup",   D_hints_lookup },
 401   { US"host_lookup",    D_host_lookup },
 402   { US"ident",          D_ident },
 403   { US"interface",      D_interface },
 404   { US"lists",          D_lists },
 405   { US"load",           D_load },
 406   { US"local_scan",     D_local_scan },
 407   { US"lookup",         D_lookup },
 408   { US"memory",         D_memory },
 409   { US"pid",            D_pid },
 410   { US"process_info",   D_process_info },
 411   { US"queue_run",      D_queue_run },
 412   { US"receive",        D_receive },
 413   { US"resolver",       D_resolver },
 414   { US"retry",          D_retry },
 415   { US"rewrite",        D_rewrite },
 416   { US"route",          D_route },
 417   { US"timestamp",      D_timestamp },
 418   { US"tls",            D_tls },
 419   { US"transport",      D_transport },
 420   { US"uid",            D_uid },
 421   { US"verify",         D_verify }
 422 };
 423 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 424 unsigned int debug_selector    = 0;
 425 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 426 uschar *delay_warning_condition= US"${if match{$h_precedence:}{(?i)bulk|list|junk}{no}{yes}}";
 427 BOOL    delivery_date_remove   = TRUE;
 428 uschar *deliver_address_data   = NULL;
 429 int     deliver_datafile       = -1;
 430 uschar *deliver_domain         = NULL;
 431 uschar *deliver_domain_data    = NULL;
 432 uschar *deliver_domain_orig    = NULL;
 433 uschar *deliver_domain_parent  = NULL;
 434 BOOL    deliver_drop_privilege = FALSE;
 435 BOOL    deliver_firsttime      = FALSE;
 436 BOOL    deliver_force          = FALSE;
 437 BOOL    deliver_freeze         = FALSE;
 438 int     deliver_frozen_at      = 0;
 439 uschar *deliver_home           = NULL;
 440 uschar *deliver_host           = NULL;
 441 uschar *deliver_host_address   = NULL;
 442 uschar *deliver_in_buffer      = NULL;
 443 ino_t   deliver_inode          = 0;
 444 uschar *deliver_localpart      = NULL;
 445 uschar *deliver_localpart_data = NULL;
 446 uschar *deliver_localpart_orig = NULL;
 447 uschar *deliver_localpart_parent = NULL;
 448 uschar *deliver_localpart_prefix = NULL;
 449 uschar *deliver_localpart_suffix = NULL;
 450 BOOL    deliver_force_thaw     = FALSE;
 451 BOOL    deliver_manual_thaw    = FALSE;
 452 uschar *deliver_out_buffer     = NULL;
 453 int     deliver_queue_load_max = -1;
 454 address_item  *deliver_recipients = NULL;
 455 uschar *deliver_selectstring   = NULL;
 456 BOOL    deliver_selectstring_regex = FALSE;
 457 uschar *deliver_selectstring_sender = NULL;
 458 BOOL    deliver_selectstring_sender_regex = FALSE;
 459 #ifdef WITH_OLD_DEMIME
 460 int     demime_errorlevel      = 0;
 461 int     demime_ok              = 0;
 462 uschar *demime_reason          = NULL;
 463 #endif
 464 BOOL    disable_logging        = FALSE;
 465
 466 #ifdef EXPERIMENTAL_DOMAINKEYS
 467 uschar *dk_signing_domain      = NULL;
 468 uschar *dk_signing_selector    = NULL;
 469 int     dk_do_verify           = 0;
 470 #endif
 471
 472 uschar *dns_again_means_nonexist = NULL;
 473 uschar *dns_ipv4_lookup        = NULL;
 474 int     dns_retrans            = 0;
 475 int     dns_retry              = 0;
 476 uschar *dnslist_domain         = NULL;
 477 uschar *dnslist_text           = NULL;
 478 uschar *dnslist_value          = NULL;
 479 tree_node *domainlist_anchor   = NULL;
 480 int     domainlist_count       = 0;
 481 BOOL    dont_deliver           = FALSE;
 482 BOOL    dot_ends               = TRUE;
 483 BOOL    drop_cr                = FALSE;         /* No longer used */
 484
 485 BOOL    enable_dollar_recipients = FALSE;
 486 BOOL    envelope_to_remove     = TRUE;
 487 int     errno_quota            = ERRNO_QUOTA;
 488 uschar *errors_copy            = NULL;
 489 int     error_handling         = ERRORS_SENDER;
 490 uschar *errors_reply_to        = NULL;
 491 int     errors_sender_rc       = EXIT_FAILURE;
 492
 493 gid_t   exim_gid               = EXIM_GID;
 494 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 495 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 496                         "\0<---------------Space to patch exim_path->";
 497 uid_t   exim_uid               = EXIM_UID;
 498 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 499 int     expand_forbid          = 0;
 500 int     expand_nlength[EXPAND_MAXN+1];
 501 int     expand_nmax            = -1;
 502 uschar *expand_nstring[EXPAND_MAXN+1];
 503 BOOL    expand_string_forcedfail = FALSE;
 504 uschar *expand_string_message;
 505 BOOL    extract_addresses_remove_arguments = TRUE;
 506 uschar *extra_local_interfaces = NULL;
 507
 508 BOOL    fake_reject            = FALSE;
 509 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).";
 510 int     filter_n[FILTER_VARIABLE_COUNT];
 511 BOOL    filter_running         = FALSE;
 512 int     filter_sn[FILTER_VARIABLE_COUNT];
 513 int     filter_test            = FTEST_NONE;
 514 uschar *filter_test_sfile      = NULL;
 515 uschar *filter_test_ufile      = NULL;
 516 uschar *filter_thisaddress     = NULL;
 517 int     finduser_retries       = 0;
 518 #ifdef WITH_OLD_DEMIME
 519 uschar *found_extension        = NULL;
 520 #endif
 521 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 522 uschar *freeze_tell            = NULL;
 523 uschar *fudged_queue_times     = US"";
 524
 525 uschar *gecos_name             = NULL;
 526 uschar *gecos_pattern          = NULL;
 527 rewrite_rule  *global_rewrite_rules = NULL;
 528
 529 uschar *headers_charset        = US HEADERS_CHARSET;
 530 int     header_insert_maxlen   = 64 * 1024;
 531 header_line  *header_last      = NULL;
 532 header_line  *header_list      = NULL;
 533 int     header_maxsize         = HEADER_MAXSIZE;
 534 int     header_line_maxsize    = 0;
 535
 536 header_name header_names[] = {
 537   { US"bcc",            3, TRUE,  htype_bcc },
 538   { US"cc",             2, TRUE,  htype_cc },
 539   { US"date",           4, TRUE,  htype_date },
 540   { US"delivery-date", 13, FALSE, htype_delivery_date },
 541   { US"envelope-to",   11, FALSE, htype_envelope_to },
 542   { US"from",           4, TRUE,  htype_from },
 543   { US"message-id",    10, TRUE,  htype_id },
 544   { US"received",       8, FALSE, htype_received },
 545   { US"reply-to",       8, FALSE, htype_reply_to },
 546   { US"return-path",   11, FALSE, htype_return_path },
 547   { US"sender",         6, TRUE,  htype_sender },
 548   { US"subject",        7, FALSE, htype_subject },
 549   { US"to",             2, TRUE,  htype_to }
 550 };
 551
 552 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 553
 554 BOOL    header_rewritten       = FALSE;
 555 uschar *helo_accept_junk_hosts = NULL;
 556 uschar *helo_allow_chars       = US"";
 557 uschar *helo_lookup_domains    = US"@ : @[]";
 558 uschar *helo_try_verify_hosts  = NULL;
 559 BOOL    helo_verified          = FALSE;
 560 uschar *helo_verify_hosts      = NULL;
 561 uschar *hex_digits             = US"0123456789abcdef";
 562 uschar *hold_domains           = NULL;
 563 BOOL    host_checking          = FALSE;
 564 BOOL    host_checking_callout  = FALSE;
 565 uschar *host_data              = NULL;
 566 BOOL    host_find_failed_syntax= FALSE;
 567 uschar *host_lookup            = NULL;
 568 BOOL    host_lookup_deferred   = FALSE;
 569 BOOL    host_lookup_failed     = FALSE;
 570 uschar *host_lookup_order      = US"bydns:byaddr";
 571 uschar *host_lookup_msg        = US"";
 572 int     host_number            = 0;
 573 uschar *host_number_string     = NULL;
 574 uschar *host_reject_connection = NULL;
 575 tree_node *hostlist_anchor     = NULL;
 576 int     hostlist_count         = 0;
 577 uschar *hosts_treat_as_local   = NULL;
 578 uschar *hosts_connection_nolog = NULL;
 579
 580 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 581 BOOL    ignore_fromline_local  = FALSE;
 582 uschar *ignore_fromline_hosts  = NULL;
 583 uschar *interface_address      = NULL;
 584 int     interface_port         = -1;
 585 BOOL    is_inetd               = FALSE;
 586
 587 int     journal_fd             = -1;
 588
 589 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 590
 591 uschar *eldap_dn               = NULL;
 592 int     load_average           = -2;
 593 BOOL    local_error_message    = FALSE;
 594 BOOL    local_from_check       = TRUE;
 595 uschar *local_from_prefix      = NULL;
 596 uschar *local_from_suffix      = NULL;
 597
 598 #if HAVE_IPV6
 599 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 600 #else
 601 uschar *local_interfaces       = US"0.0.0.0";
 602 #endif
 603
 604 uschar *local_scan_data        = NULL;
 605 int     local_scan_timeout     = 5*60;
 606 BOOL    local_sender_retain    = FALSE;
 607 gid_t   local_user_gid         = (gid_t)(-1);
 608 uid_t   local_user_uid         = (uid_t)(-1);
 609
 610 tree_node *localpartlist_anchor= NULL;
 611 int     localpartlist_count    = 0;
 612 uschar *log_buffer             = NULL;
 613 unsigned int log_extra_selector = LX_default;
 614 uschar *log_file_path          = US LOG_FILE_PATH
 615                            "\0<--------------Space to patch log_file_path->";
 616
 617 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 618 are the ones that get put into log_write_selector. They can be used in calls to
 619 log_write() to test for the bit. The options with LX_xxx identifiers have
 620 values greater than 0x80000000 and are put int log_extra_selector (without the
 621 top bit). They are never used in calls to log_write(), but are tested
 622 independently. This separation became necessary when the number of log
 623 selectors was getting close to filling a 32-bit word. */
 624
 625 bit_table log_options[]        = {
 626   { US"address_rewrite",              L_address_rewrite },
 627   { US"all",                          L_all },
 628   { US"all_parents",                  L_all_parents },
 629   { US"arguments",                    LX_arguments },
 630   { US"connection_reject",            L_connection_reject },
 631   { US"delay_delivery",               L_delay_delivery },
 632   { US"deliver_time",                 LX_deliver_time },
 633   { US"delivery_size",                LX_delivery_size },
 634   { US"dnslist_defer",                L_dnslist_defer },
 635   { US"etrn",                         L_etrn },
 636   { US"host_lookup_failed",           L_host_lookup_failed },
 637   { US"ident_timeout",                LX_ident_timeout },
 638   { US"incoming_interface",           LX_incoming_interface },
 639   { US"incoming_port",                LX_incoming_port },
 640   { US"lost_incoming_connection",     L_lost_incoming_connection },
 641   { US"outgoing_port",                LX_outgoing_port },
 642   { US"queue_run",                    L_queue_run },
 643   { US"queue_time",                   LX_queue_time },
 644   { US"queue_time_overall",           LX_queue_time_overall },
 645   { US"received_recipients",          LX_received_recipients },
 646   { US"received_sender",              LX_received_sender },
 647   { US"rejected_header",              LX_rejected_header },
 648   { US"rejected_headers",             LX_rejected_header },
 649   { US"retry_defer",                  L_retry_defer },
 650   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 651   { US"sender_on_delivery",           LX_sender_on_delivery },
 652   { US"size_reject",                  L_size_reject },
 653   { US"skip_delivery",                L_skip_delivery },
 654   { US"smtp_confirmation",            LX_smtp_confirmation },
 655   { US"smtp_connection",              L_smtp_connection },
 656   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 657   { US"smtp_protocol_error",          L_smtp_protocol_error },
 658   { US"smtp_syntax_error",            L_smtp_syntax_error },
 659   { US"subject",                      LX_subject },
 660   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 661   { US"tls_cipher",                   LX_tls_cipher },
 662   { US"tls_peerdn",                   LX_tls_peerdn }
 663 };
 664
 665 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 666 unsigned int log_write_selector= L_default;
 667 uschar *log_selector_string    = NULL;
 668 FILE   *log_stderr             = NULL;
 669 BOOL    log_testing_mode       = FALSE;
 670 BOOL    log_timezone           = FALSE;
 671 uschar *login_sender_address   = NULL;
 672 int     lookup_open_max        = 25;
 673 uschar *lookup_value           = NULL;
 674
 675 macro_item  *macros            = NULL;
 676 uschar *mailstore_basename     = NULL;
 677 #ifdef WITH_CONTENT_SCAN
 678 uschar *malware_name           = NULL;  /* Virus Name */
 679 #endif
 680 int     max_username_length    = 0;
 681 int     message_age            = 0;
 682 uschar *message_body           = NULL;
 683 uschar *message_body_end       = NULL;
 684 int     message_body_size      = 0;
 685 int     message_body_visible   = 500;
 686 int     message_ended          = END_NOTSTARTED;
 687 uschar *message_headers        = NULL;
 688 uschar *message_id;
 689 uschar *message_id_domain      = NULL;
 690 uschar *message_id_text        = NULL;
 691 struct timeval message_id_tv   = { 0, 0 };
 692 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 693 uschar *message_id_external;
 694 int     message_linecount      = 0;
 695 BOOL    message_logs           = TRUE;
 696 int     message_size           = 0;
 697 uschar *message_size_limit     = US"50M";
 698 uschar  message_subdir[2]      = { 0, 0 };
 699 uschar *message_reference      = NULL;
 700
 701 /* MIME ACL expandables */
 702 #ifdef WITH_CONTENT_SCAN
 703 int     mime_anomaly_level     = 0;
 704 uschar *mime_anomaly_text      = NULL;
 705 uschar *mime_boundary          = NULL;
 706 uschar *mime_charset           = NULL;
 707 uschar *mime_content_description = NULL;
 708 uschar *mime_content_disposition = NULL;
 709 uschar *mime_content_id        = NULL;
 710 unsigned int mime_content_size = 0;
 711 uschar *mime_content_transfer_encoding = NULL;
 712 uschar *mime_content_type      = NULL;
 713 uschar *mime_decoded_filename  = NULL;
 714 uschar *mime_filename          = NULL;
 715 int     mime_is_multipart      = 0;
 716 int     mime_is_coverletter    = 0;
 717 int     mime_is_rfc822         = 0;
 718 int     mime_part_count        = -1;
 719 #endif
 720
 721 BOOL    mua_wrapper            = FALSE;
 722
 723 uid_t  *never_users            = NULL;
 724 #ifdef WITH_CONTENT_SCAN
 725 BOOL    no_mbox_unspool        = FALSE;
 726 #endif
 727 BOOL    no_multiline_responses = FALSE;
 728
 729 uid_t   original_euid;
 730 gid_t   originator_gid;
 731 uschar *originator_login       = NULL;
 732 uschar *originator_name        = NULL;
 733 uid_t   originator_uid;
 734 uschar *override_local_interfaces = NULL;
 735 uschar *override_pid_file_path = NULL;
 736
 737 BOOL    parse_allow_group      = FALSE;
 738 BOOL    parse_found_group      = FALSE;
 739 uschar *percent_hack_domains   = NULL;
 740 uschar *pid_file_path          = US PID_FILE_PATH
 741                            "\0<--------------Space to patch pid_file_path->";
 742 uschar *pipelining_advertise_hosts = US"*";
 743 BOOL    preserve_message_logs  = FALSE;
 744 uschar *primary_hostname       = NULL;
 745 BOOL    print_topbitchars      = FALSE;
 746 uschar  process_info[PROCESS_INFO_SIZE];
 747 uschar *process_log_path       = NULL;
 748 BOOL    prod_requires_admin    = TRUE;
 749
 750 uschar *qualify_domain_recipient = NULL;
 751 uschar *qualify_domain_sender  = NULL;
 752 BOOL    queue_2stage           = FALSE;
 753 uschar *queue_domains          = NULL;
 754 int     queue_interval         = -1;
 755 BOOL    queue_list_requires_admin = TRUE;
 756 BOOL    queue_only             = FALSE;
 757 uschar *queue_only_file        = NULL;
 758 int     queue_only_load        = -1;
 759 BOOL    queue_only_override    = TRUE;
 760 BOOL    queue_only_policy      = FALSE;
 761 BOOL    queue_run_first_delivery = FALSE;
 762 BOOL    queue_run_force        = FALSE;
 763 BOOL    queue_run_in_order     = FALSE;
 764 BOOL    queue_run_local        = FALSE;
 765 int     queue_run_max          = 5;
 766 pid_t   queue_run_pid          = (pid_t)0;
 767 int     queue_run_pipe         = -1;
 768 BOOL    queue_running          = FALSE;
 769 BOOL    queue_smtp             = FALSE;
 770 uschar *queue_smtp_domains     = NULL;
 771
 772 unsigned int random_seed       = 0;
 773 uschar *raw_active_hostname    = NULL;
 774 uschar *raw_sender             = NULL;
 775 uschar **raw_recipients        = NULL;
 776 int     raw_recipients_count   = 0;
 777
 778 int     rcpt_count             = 0;
 779 int     rcpt_fail_count        = 0;
 780 int     rcpt_defer_count       = 0;
 781 gid_t   real_gid;
 782 uid_t   real_uid;
 783 BOOL    really_exim            = TRUE;
 784 BOOL    receive_call_bombout   = FALSE;
 785 int     receive_linecount      = 0;
 786 int     receive_messagecount   = 0;
 787 int     receive_timeout        = 0;
 788 int     received_count         = 0;
 789 uschar *received_for           = NULL;
 790
 791 /*  This is the default text for Received headers generated by Exim. The
 792 date  will be automatically added on the end. */
 793
 794 uschar *received_header_text   = US
 795      "Received: "
 796      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 797      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
 798      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 799      "by $primary_hostname "
 800      "${if def:received_protocol {with $received_protocol}} "
 801      #ifdef SUPPORT_TLS
 802      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 803      #endif
 804      "(Exim $version_number)\n\t"
 805      "id $message_id"
 806      "${if def:received_for {\n\tfor $received_for}}"
 807      "\0<---------------Space to patch received_header_text->";
 808
 809 int     received_headers_max   = 30;
 810 uschar *received_protocol      = NULL;
 811 int     received_time          = 0;
 812 uschar *recipient_data         = NULL;
 813 uschar *recipient_unqualified_hosts = NULL;
 814 uschar *recipient_verify_failure = NULL;
 815 int     recipients_count       = 0;
 816 BOOL    recipients_discarded   = FALSE;
 817 recipient_item  *recipients_list = NULL;
 818 int     recipients_list_max    = 0;
 819 int     recipients_max         = 0;
 820 BOOL    recipients_max_reject  = FALSE;
 821 const pcre *regex_AUTH         = NULL;
 822 const pcre *regex_check_dns_names = NULL;
 823 const pcre *regex_From         = NULL;
 824 const pcre *regex_PIPELINING   = NULL;
 825 const pcre *regex_SIZE         = NULL;
 826 const pcre *regex_ismsgid      = NULL;
 827 #ifdef WITH_CONTENT_SCAN
 828 uschar *regex_match_string     = NULL;
 829 #endif
 830 int     remote_delivery_count  = 0;
 831 int     remote_max_parallel    = 2;
 832 uschar *remote_sort_domains    = NULL;
 833 int     retry_data_expire      = 7*24*60*60;
 834 int     retry_interval_max     = 24*60*60;
 835 int     retry_maximum_timeout  = 0;        /* set from retry config */
 836 retry_config  *retries         = NULL;
 837 uschar *return_path            = NULL;
 838 BOOL    return_path_remove     = TRUE;
 839 int     rewrite_existflags     = 0;
 840 uschar *rfc1413_hosts          = US"*";
 841 int     rfc1413_query_timeout  = 30;
 842 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 843 uid_t   root_uid               = ROOT_UID;
 844
 845 router_instance  *routers  = NULL;
 846 router_instance  router_defaults = {
 847     NULL,                      /* chain pointer */
 848     NULL,                      /* name */
 849     NULL,                      /* info */
 850     NULL,                      /* private options block pointer */
 851     NULL,                      /* driver name */
 852
 853     NULL,                      /* address_data */
 854 #ifdef EXPERIMENTAL_BRIGHTMAIL
 855     NULL,                      /* bmi_rule */
 856 #endif
 857     NULL,                      /* cannot_route_message */
 858     NULL,                      /* condition */
 859     NULL,                      /* current_directory */
 860     NULL,                      /* debug_string */
 861     NULL,                      /* domains */
 862     NULL,                      /* errors_to */
 863     NULL,                      /* expand_gid */
 864     NULL,                      /* expand_uid */
 865     NULL,                      /* expand_more */
 866     NULL,                      /* expand_unseen */
 867     NULL,                      /* extra_headers */
 868     NULL,                      /* fallback_hosts */
 869     NULL,                      /* home_directory */
 870     NULL,                      /* ignore_target_hosts */
 871     NULL,                      /* local_parts */
 872     NULL,                      /* pass_router_name */
 873     NULL,                      /* prefix */
 874     NULL,                      /* redirect_router_name */
 875     NULL,                      /* remove_headers */
 876     NULL,                      /* require_files */
 877     NULL,                      /* router_home_directory */
 878     US"freeze",                /* self */
 879     NULL,                      /* senders */
 880     NULL,                      /* suffix */
 881     NULL,                      /* translate_ip_address */
 882     NULL,                      /* transport_name */
 883
 884     TRUE,                      /* address_test */
 885 #ifdef EXPERIMENTAL_BRIGHTMAIL
 886     FALSE,                     /* bmi_deliver_alternate */
 887     FALSE,                     /* bmi_deliver_default */
 888     FALSE,                     /* bmi_dont_deliver */
 889 #endif
 890     TRUE,                      /* expn */
 891     FALSE,                     /* caseful_local_part */
 892     FALSE,                     /* check_local_user */
 893     FALSE,                     /* disable_logging */
 894     FALSE,                     /* fail_verify_recipient */
 895     FALSE,                     /* fail_verify_sender */
 896     FALSE,                     /* gid_set */
 897     FALSE,                     /* initgroups */
 898     TRUE_UNSET,                /* log_as_local */
 899     TRUE,                      /* more */
 900     FALSE,                     /* pass_on_timeout */
 901     FALSE,                     /* prefix_optional */
 902     TRUE,                      /* repeat_use */
 903     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
 904     FALSE,                     /* same_domain_copy_routing */
 905     FALSE,                     /* self_rewrite */
 906     FALSE,                     /* suffix_optional */
 907     FALSE,                     /* verify_only */
 908     TRUE,                      /* verify_recipient */
 909     TRUE,                      /* verify_sender */
 910     FALSE,                     /* uid_set */
 911     FALSE,                     /* unseen */
 912
 913     self_freeze,               /* self_code */
 914     (uid_t)(-1),               /* uid */
 915     (gid_t)(-1),               /* gid */
 916
 917     NULL,                      /* fallback_hostlist */
 918     NULL,                      /* transport instance */
 919     NULL,                      /* pass_router */
 920     NULL                       /* redirect_router */
 921 };
 922
 923 ip_address_item *running_interfaces = NULL;
 924 BOOL    running_in_test_harness = FALSE;
 925
 926 /* This is a weird one. The following string gets patched in the binary by the
 927 script that sets up a copy of Exim for running in the test harness. It seems
 928 that compilers are now clever, and share constant strings if they can.
 929 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
 930 make use of the end of this string in order to save space. So the patching then
 931 wrecks this. We default this optimization by adding some additional characters
 932 onto the end of the string. */
 933
 934 uschar *running_status         = US">>>running<<<" "\0EXTRA";
 935
 936 int     runrc                  = 0;
 937
 938 uschar *search_error_message   = NULL;
 939 BOOL    search_find_defer      = FALSE;
 940 uschar *self_hostname          = NULL;
 941 uschar *sender_address         = NULL;
 942 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
 943 uschar *sender_address_data    = NULL;
 944 BOOL    sender_address_forced  = FALSE;
 945 uschar *sender_address_unrewritten = NULL;
 946 uschar *sender_data            = NULL;
 947 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
 948 uschar *sender_fullhost        = NULL;
 949 uschar *sender_helo_name       = NULL;
 950 uschar **sender_host_aliases   = &no_aliases;
 951 uschar *sender_host_address    = NULL;
 952 uschar *sender_host_authenticated = NULL;
 953 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
 954 uschar *sender_host_name       = NULL;
 955 int     sender_host_port       = 0;
 956 BOOL    sender_host_notsocket  = FALSE;
 957 BOOL    sender_host_unknown    = FALSE;
 958 uschar *sender_ident           = NULL;
 959 BOOL    sender_local           = FALSE;
 960 uschar *sender_rcvhost         = NULL;
 961 BOOL    sender_set_untrusted   = FALSE;
 962 uschar *sender_unqualified_hosts = NULL;
 963 uschar *sender_verify_failure = NULL;
 964 address_item *sender_verified_list  = NULL;
 965 address_item *sender_verified_failed = NULL;
 966 int     sender_verified_rc     = -1;
 967 BOOL    sender_verified_responded = FALSE;
 968 volatile  BOOL sigalrm_seen    = FALSE;
 969 uschar **sighup_argv           = NULL;
 970 int     smtp_accept_count      = 0;
 971 BOOL    smtp_accept_keepalive  = TRUE;
 972 int     smtp_accept_max        = 20;
 973 int     smtp_accept_max_nonmail= 10;
 974 uschar *smtp_accept_max_nonmail_hosts = US"*";
 975 int     smtp_accept_max_per_connection = 1000;
 976 uschar *smtp_accept_max_per_host = NULL;
 977 int     smtp_accept_queue      = 0;
 978 int     smtp_accept_queue_per_connection = 10;
 979 int     smtp_accept_reserve    = 0;
 980 uschar *smtp_active_hostname   = NULL;
 981 BOOL    smtp_authenticated     = FALSE;
 982 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
 983                              "Exim $version_number $tod_full"
 984                              "\0<---------------Space to patch smtp_banner->";
 985 BOOL    smtp_batched_input     = FALSE;
 986 BOOL    smtp_check_spool_space = TRUE;
 987 uschar *smtp_command_argument  = NULL;
 988 int     smtp_connect_backlog   = 20;
 989 double  smtp_delay_mail        = 0.0;
 990 double  smtp_delay_rcpt        = 0.0;
 991 BOOL    smtp_enforce_sync      = TRUE;
 992 FILE   *smtp_in                = NULL;
 993 BOOL    smtp_input             = FALSE;
 994 int     smtp_load_reserve      = -1;
 995 int     smtp_mailcmd_count     = 0;
 996 FILE   *smtp_out               = NULL;
 997 uschar *smtp_etrn_command      = NULL;
 998 BOOL    smtp_etrn_serialize    = TRUE;
 999 int     smtp_max_synprot_errors= 3;
1000 int     smtp_max_unknown_commands = 3;
1001 uschar *smtp_ratelimit_hosts   = NULL;
1002 uschar *smtp_ratelimit_mail    = NULL;
1003 uschar *smtp_ratelimit_rcpt    = NULL;
1004 uschar *smtp_read_error        = US"";
1005 int     smtp_receive_timeout   = 5*60;
1006 uschar *smtp_reserve_hosts     = NULL;
1007 BOOL    smtp_return_error_details = FALSE;
1008 int     smtp_rlm_base          = 0;
1009 double  smtp_rlm_factor        = 0.0;
1010 int     smtp_rlm_limit         = 0;
1011 int     smtp_rlm_threshold     = INT_MAX;
1012 int     smtp_rlr_base          = 0;
1013 double  smtp_rlr_factor        = 0.0;
1014 int     smtp_rlr_limit         = 0;
1015 int     smtp_rlr_threshold     = INT_MAX;
1016 BOOL    smtp_use_pipelining    = FALSE;
1017 BOOL    smtp_use_size          = FALSE;
1018
1019 #ifdef WITH_CONTENT_SCAN
1020 uschar *spamd_address          = US"127.0.0.1 783";
1021 uschar *spam_bar               = NULL;
1022 uschar *spam_report            = NULL;
1023 uschar *spam_score             = NULL;
1024 uschar *spam_score_int         = NULL;
1025 #endif
1026 #ifdef EXPERIMENTAL_SPF
1027 uschar *spf_header_comment     = NULL;
1028 uschar *spf_received           = NULL;
1029 uschar *spf_result             = NULL;
1030 uschar *spf_smtp_comment       = NULL;
1031 #endif
1032
1033 BOOL    split_spool_directory  = FALSE;
1034 uschar *spool_directory        = US SPOOL_DIRECTORY
1035                            "\0<--------------Space to patch spool_directory->";
1036 #ifdef EXPERIMENTAL_SRS
1037 uschar *srs_config             = NULL;
1038 uschar *srs_db_address         = NULL;
1039 uschar *srs_db_key             = NULL;
1040 uschar *srs_orig_recipient     = NULL;
1041 uschar *srs_orig_sender        = NULL;
1042 uschar *srs_recipient          = NULL;
1043 uschar *srs_status             = NULL;
1044 #endif
1045 int     string_datestamp_offset= -1;
1046 BOOL    strip_excess_angle_brackets = FALSE;
1047 BOOL    strip_trailing_dot     = FALSE;
1048 uschar *submission_domain      = NULL;
1049 BOOL    submission_mode        = FALSE;
1050 BOOL    synchronous_delivery   = FALSE;
1051 BOOL    syslog_duplication     = TRUE;
1052 int     syslog_facility        = LOG_MAIL;
1053 uschar *syslog_processname     = US"exim";
1054 BOOL    syslog_timestamp       = TRUE;
1055 uschar *system_filter          = NULL;
1056
1057 uschar *system_filter_directory_transport = NULL;
1058 uschar *system_filter_file_transport = NULL;
1059 uschar *system_filter_pipe_transport = NULL;
1060 uschar *system_filter_reply_transport = NULL;
1061
1062 gid_t   system_filter_gid      = 0;
1063 BOOL    system_filter_gid_set  = FALSE;
1064 uid_t   system_filter_uid      = 0;
1065 BOOL    system_filter_uid_set  = FALSE;
1066 BOOL    system_filtering       = FALSE;
1067
1068 BOOL    tcp_nodelay            = TRUE;
1069 int     thismessage_size_limit = 0;
1070 int     timeout_frozen_after   = 0;
1071 BOOL    timestamps_utc         = FALSE;
1072
1073 transport_instance  *transports = NULL;
1074
1075 transport_instance  transport_defaults = {
1076     NULL,                     /* chain pointer */
1077     NULL,                     /* name */
1078     NULL,                     /* info */
1079     NULL,                     /* private options block pointer */
1080     NULL,                     /* driver name */
1081     NULL,                     /* setup entry point */
1082     1,                        /* batch_max */
1083     NULL,                     /* batch_id */
1084     NULL,                     /* home_dir */
1085     NULL,                     /* current_dir */
1086     TRUE,                     /* multi-domain */
1087     FALSE,                    /* overrides_hosts */
1088     100,                      /* max_addresses */
1089     500,                      /* connection_max_messages */
1090     FALSE,                    /* deliver_as_creator */
1091     FALSE,                    /* disable_logging */
1092     FALSE,                    /* initgroups */
1093     FALSE,                    /* uid_set */
1094     FALSE,                    /* gid_set */
1095     (uid_t)(-1),              /* uid */
1096     (gid_t)(-1),              /* gid */
1097     NULL,                     /* expand_uid */
1098     NULL,                     /* expand_gid */
1099     NULL,                     /* warn_message */
1100     NULL,                     /* shadow */
1101     NULL,                     /* shadow_condition */
1102     NULL,                     /* filter_command */
1103     NULL,                     /* add_headers */
1104     NULL,                     /* remove_headers */
1105     NULL,                     /* return_path */
1106     NULL,                     /* debug_string */
1107     NULL,                     /* message_size_limit */
1108     NULL,                     /* headers_rewrite */
1109     NULL,                     /* rewrite_rules */
1110     0,                        /* rewrite_existflags */
1111     300,                      /* filter_timeout */
1112     FALSE,                    /* body_only */
1113     FALSE,                    /* delivery_date_add */
1114     FALSE,                    /* envelope_to_add */
1115     FALSE,                    /* headers_only */
1116     FALSE,                    /* rcpt_include_affixes */
1117     FALSE,                    /* return_path_add */
1118     FALSE,                    /* return_output */
1119     FALSE,                    /* return_fail_output */
1120     FALSE,                    /* log_output */
1121     FALSE,                    /* log_fail_output */
1122     FALSE,                    /* log_defer_output */
1123     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1124                                  1 nor 0 so can detect unset */
1125 };
1126
1127 int     transport_count;
1128 uschar **transport_filter_argv  = NULL;
1129 int     transport_filter_timeout;
1130 int     transport_write_timeout= 0;
1131
1132 tree_node  *tree_dns_fails     = NULL;
1133 tree_node  *tree_duplicates    = NULL;
1134 tree_node  *tree_nonrecipients = NULL;
1135 tree_node  *tree_unusable      = NULL;
1136
1137 BOOL    trusted_caller         = FALSE;
1138 gid_t  *trusted_groups         = NULL;
1139 uid_t  *trusted_users          = NULL;
1140 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1141
1142 uschar *unknown_login          = NULL;
1143 uschar *unknown_username       = NULL;
1144 uschar *untrusted_set_sender   = NULL;
1145
1146 /*  A regex for matching a "From_" line in an incoming message, in the form
1147
1148     From ph10 Fri Jan  5 12:35 GMT 1996
1149
1150 which  the "mail" commands send to the MTA (undocumented, of course), or in
1151 the  form
1152
1153     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1154
1155 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1156 Because  of variations in time formats, just match up to the minutes. That
1157 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1158 so  just require one digit for hours and minutes. The weekday is also absent
1159 in  some forms. */
1160
1161 uschar *uucp_from_pattern      = US
1162    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1163    "(?:"                                          /* Non-extracting bracket */
1164    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1165    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1166    ")"                                            /* End alternation */
1167    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1168
1169 uschar *uucp_from_sender       = US"$1";
1170
1171 uschar *warn_message_file      = NULL;
1172 uschar *warnmsg_delay          = NULL;
1173 uschar *warnmsg_recipients     = NULL;
1174 BOOL    write_rejectlog        = TRUE;
1175
1176 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2005";
1177 uschar *version_date           = US"?";
1178 uschar *version_cnumber        = US"????";
1179 uschar *version_string         = US"?";
1180
1181 int     warning_count          = 0;
1182
1183 /*  End of globals.c */