src/src/globals.c

   1 /* $Cambridge: exim/src/src/globals.c,v 1.81.2.2 2009/04/09 13:57:21 tom Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2007 */
   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   { "client_condition", opt_stringptr | opt_public,
  36                  (void *)(offsetof(auth_instance, client_condition)) },
  37   { "driver",        opt_stringptr | opt_public,
  38                  (void *)(offsetof(auth_instance, driver_name)) },
  39   { "public_name",   opt_stringptr | opt_public,
  40                  (void *)(offsetof(auth_instance, public_name)) },
  41   { "server_advertise_condition", opt_stringptr | opt_public,
  42                  (void *)(offsetof(auth_instance, advertise_condition))},
  43   { "server_condition", opt_stringptr | opt_public,
  44                  (void *)(offsetof(auth_instance, server_condition)) },
  45   { "server_debug_print", opt_stringptr | opt_public,
  46                  (void *)(offsetof(auth_instance, server_debug_string)) },
  47   { "server_mail_auth_condition", opt_stringptr | opt_public,
  48                  (void *)(offsetof(auth_instance, mail_auth_condition)) },
  49   { "server_set_id", opt_stringptr | opt_public,
  50                  (void *)(offsetof(auth_instance, set_id)) }
  51 };
  52
  53 int     optionlist_auths_size = sizeof(optionlist_auths)/sizeof(optionlist);
  54
  55 /* An empty host aliases list. */
  56
  57 uschar *no_aliases             = NULL;
  58
  59
  60 /* For comments on these variables, see globals.h. I'm too idle to
  61 duplicate them here... */
  62
  63 #ifdef EXIM_PERL
  64 uschar *opt_perl_startup       = NULL;
  65 BOOL    opt_perl_at_start      = FALSE;
  66 BOOL    opt_perl_started       = FALSE;
  67 #endif
  68
  69 #ifdef EXPAND_DLFUNC
  70 tree_node *dlobj_anchor        = NULL;
  71 #endif
  72
  73 #ifdef LOOKUP_IBASE
  74 uschar *ibase_servers          = NULL;
  75 #endif
  76
  77 #ifdef LOOKUP_LDAP
  78 uschar *eldap_default_servers  = NULL;
  79 int     eldap_version          = -1;
  80 #endif
  81
  82 #ifdef LOOKUP_MYSQL
  83 uschar *mysql_servers          = NULL;
  84 #endif
  85
  86 #ifdef LOOKUP_ORACLE
  87 uschar *oracle_servers         = NULL;
  88 #endif
  89
  90 #ifdef LOOKUP_PGSQL
  91 uschar *pgsql_servers          = NULL;
  92 #endif
  93
  94 #ifdef LOOKUP_SQLITE
  95 int     sqlite_lock_timeout    = 5;
  96 #endif
  97
  98 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  99 BOOL    move_frozen_messages   = FALSE;
 100 #endif
 101
 102 /* These variables are outside the #ifdef because it keeps the code less
 103 cluttered in several places (e.g. during logging) if we can always refer to
 104 them. Also, the tls_ variables are now always visible. */
 105
 106 BOOL    tls_active             = -1;
 107 BOOL    tls_certificate_verified = FALSE;
 108 uschar *tls_cipher             = NULL;
 109 BOOL    tls_on_connect         = FALSE;
 110 uschar *tls_on_connect_ports   = NULL;
 111 uschar *tls_peerdn             = NULL;
 112
 113 #ifdef SUPPORT_TLS
 114 uschar *gnutls_require_mac     = NULL;
 115 uschar *gnutls_require_kx      = NULL;
 116 uschar *gnutls_require_proto   = NULL;
 117 const pcre *regex_STARTTLS     = NULL;
 118 uschar *tls_advertise_hosts    = NULL;    /* This is deliberate */
 119 uschar *tls_certificate        = NULL;
 120 uschar *tls_crl                = NULL;
 121 uschar *tls_dhparam            = NULL;
 122 BOOL    tls_offered            = FALSE;
 123 uschar *tls_privatekey         = NULL;
 124 BOOL    tls_remember_esmtp     = FALSE;
 125 uschar *tls_require_ciphers    = NULL;
 126 uschar *tls_try_verify_hosts   = NULL;
 127 uschar *tls_verify_certificates= NULL;
 128 uschar *tls_verify_hosts       = NULL;
 129 #endif
 130
 131
 132 /* Input-reading functions for messages, so we can use special ones for
 133 incoming TCP/IP. The defaults use stdin. We never need these for any
 134 stand-alone tests. */
 135
 136 #ifndef STAND_ALONE
 137 int (*receive_getc)(void)      = stdin_getc;
 138 int (*receive_ungetc)(int)     = stdin_ungetc;
 139 int (*receive_feof)(void)      = stdin_feof;
 140 int (*receive_ferror)(void)    = stdin_ferror;
 141 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 142 #endif
 143
 144
 145 /* List of per-address expansion variables for clearing and saving/restoring
 146 when verifying one address while routing/verifying another. We have to have
 147 the size explicit, because it is referenced from more than one module. */
 148
 149 uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 150   &deliver_address_data,
 151   &deliver_domain,
 152   &deliver_domain_data,
 153   &deliver_domain_orig,
 154   &deliver_domain_parent,
 155   &deliver_localpart,
 156   &deliver_localpart_data,
 157   &deliver_localpart_orig,
 158   &deliver_localpart_parent,
 159   &deliver_localpart_prefix,
 160   &deliver_localpart_suffix,
 161   (uschar **)(&deliver_recipients),
 162   &deliver_host,
 163   &deliver_home,
 164   &address_file,
 165   &address_pipe,
 166   &self_hostname,
 167   NULL };
 168
 169 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 170
 171 /* General global variables */
 172
 173 header_line *acl_added_headers = NULL;
 174 tree_node *acl_anchor          = NULL;
 175
 176 uschar *acl_not_smtp           = NULL;
 177 #ifdef WITH_CONTENT_SCAN
 178 uschar *acl_not_smtp_mime      = NULL;
 179 #endif
 180 uschar *acl_not_smtp_start     = NULL;
 181
 182 uschar *acl_smtp_auth          = NULL;
 183 uschar *acl_smtp_connect       = NULL;
 184 uschar *acl_smtp_data          = NULL;
 185 uschar *acl_smtp_etrn          = NULL;
 186 uschar *acl_smtp_expn          = NULL;
 187 uschar *acl_smtp_helo          = NULL;
 188 uschar *acl_smtp_mail          = NULL;
 189 uschar *acl_smtp_mailauth      = NULL;
 190 #ifdef WITH_CONTENT_SCAN
 191 uschar *acl_smtp_mime          = NULL;
 192 #endif
 193 uschar *acl_smtp_notquit       = NULL;
 194 uschar *acl_smtp_predata       = NULL;
 195 uschar *acl_smtp_quit          = NULL;
 196 uschar *acl_smtp_rcpt          = NULL;
 197 uschar *acl_smtp_starttls      = NULL;
 198 uschar *acl_smtp_vrfy          = NULL;
 199
 200 BOOL    acl_temp_details       = FALSE;
 201 tree_node *acl_var_c           = NULL;
 202 tree_node *acl_var_m           = NULL;
 203 uschar *acl_verify_message     = NULL;
 204 string_item *acl_warn_logged   = NULL;
 205
 206 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 207 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 208
 209 uschar *acl_wherenames[]       = { US"RCPT",
 210                                    US"MAIL",
 211                                    US"PREDATA",
 212                                    US"MIME",
 213                                    US"DATA",
 214                                    US"non-SMTP",
 215                                    US"AUTH",
 216                                    US"connection",
 217                                    US"ETRN",
 218                                    US"EXPN",
 219                                    US"EHLO or HELO",
 220                                    US"MAILAUTH",
 221                                    US"non-SMTP-start",
 222                                    US"NOTQUIT",
 223                                    US"QUIT",
 224                                    US"STARTTLS",
 225                                    US"VRFY"
 226                                  };
 227
 228 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 229                                    US"550",     /* MAIL */
 230                                    US"550",     /* PREDATA */
 231                                    US"550",     /* MIME */
 232                                    US"550",     /* DATA */
 233                                    US"0",       /* not SMTP; not relevant */
 234                                    US"503",     /* AUTH */
 235                                    US"550",     /* connect */
 236                                    US"458",     /* ETRN */
 237                                    US"550",     /* EXPN */
 238                                    US"550",     /* HELO/EHLO */
 239                                    US"0",       /* MAILAUTH; not relevant */
 240                                    US"0",       /* not SMTP; not relevant */
 241                                    US"0",       /* NOTQUIT; not relevant */
 242                                    US"0",       /* QUIT; not relevant */
 243                                    US"550",     /* STARTTLS */
 244                                    US"252"      /* VRFY */
 245                                  };
 246
 247 BOOL    active_local_from_check = FALSE;
 248 BOOL    active_local_sender_retain = FALSE;
 249 BOOL    accept_8bitmime        = FALSE;
 250 address_item  *addr_duplicate  = NULL;
 251
 252 address_item address_defaults = {
 253   NULL,                 /* next */
 254   NULL,                 /* parent */
 255   NULL,                 /* first */
 256   NULL,                 /* dupof */
 257   NULL,                 /* start_router */
 258   NULL,                 /* router */
 259   NULL,                 /* transport */
 260   NULL,                 /* host_list */
 261   NULL,                 /* host_used */
 262   NULL,                 /* fallback_hosts */
 263   NULL,                 /* reply */
 264   NULL,                 /* retries */
 265   NULL,                 /* address */
 266   NULL,                 /* unique */
 267   NULL,                 /* cc_local_part */
 268   NULL,                 /* lc_local_part */
 269   NULL,                 /* local_part */
 270   NULL,                 /* prefix */
 271   NULL,                 /* suffix */
 272   NULL,                 /* domain */
 273   NULL,                 /* address_retry_key */
 274   NULL,                 /* domain_retry_key */
 275   NULL,                 /* current_dir */
 276   NULL,                 /* home_dir */
 277   NULL,                 /* message */
 278   NULL,                 /* user_message */
 279   NULL,                 /* onetime_parent */
 280   NULL,                 /* pipe_expandn */
 281   NULL,                 /* return_filename */
 282   NULL,                 /* self_hostname */
 283   NULL,                 /* shadow_message */
 284   #ifdef SUPPORT_TLS
 285   NULL,                 /* cipher */
 286   NULL,                 /* peerdn */
 287   #endif
 288   (uid_t)(-1),          /* uid */
 289   (gid_t)(-1),          /* gid */
 290   0,                    /* flags */
 291   { 0 },                /* domain_cache - any larger array should be zeroed */
 292   { 0 },                /* localpart_cache - ditto */
 293   -1,                   /* mode */
 294   0,                    /* more_errno */
 295   ERRNO_UNKNOWNERROR,   /* basic_errno */
 296   0,                    /* child_count */
 297   -1,                   /* return_file */
 298   SPECIAL_NONE,         /* special_action */
 299   DEFER,                /* transport_return */
 300   {                     /* fields that are propagated to children */
 301     NULL,               /* address_data */
 302     NULL,               /* domain_data */
 303     NULL,               /* localpart_data */
 304     NULL,               /* errors_address */
 305     NULL,               /* extra_headers */
 306     NULL,               /* remove_headers */
 307 #ifdef EXPERIMENTAL_SRS
 308     NULL,               /* srs_sender */
 309 #endif
 310   }
 311 };
 312
 313 uschar *address_file           = NULL;
 314 uschar *address_pipe           = NULL;
 315 BOOL    address_test_mode      = FALSE;
 316 tree_node *addresslist_anchor  = NULL;
 317 int     addresslist_count      = 0;
 318 gid_t  *admin_groups           = NULL;
 319 BOOL    admin_user             = FALSE;
 320 BOOL    allow_auth_unadvertised= FALSE;
 321 BOOL    allow_domain_literals  = FALSE;
 322 BOOL    allow_mx_to_ip         = FALSE;
 323 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 324 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 325 BOOL    allow_utf8_domains     = FALSE;
 326 uschar *authenticated_id       = NULL;
 327 uschar *authenticated_sender   = NULL;
 328 BOOL    authentication_failed  = FALSE;
 329 auth_instance  *auths          = NULL;
 330 uschar *auth_advertise_hosts   = US"*";
 331 auth_instance auth_defaults    = {
 332     NULL,                      /* chain pointer */
 333     NULL,                      /* name */
 334     NULL,                      /* info */
 335     NULL,                      /* private options block pointer */
 336     NULL,                      /* driver_name */
 337     NULL,                      /* advertise_condition */
 338     NULL,                      /* client_condition */
 339     NULL,                      /* public_name */
 340     NULL,                      /* set_id */
 341     NULL,                      /* server_mail_auth_condition */
 342     NULL,                      /* server_debug_string */
 343     NULL,                      /* server_condition */
 344     FALSE,                     /* client */
 345     FALSE,                     /* server */
 346     FALSE                      /* advertised */
 347 };
 348
 349 uschar *auth_defer_msg         = US"reason not recorded";
 350 uschar *auth_defer_user_msg    = US"";
 351 uschar *auth_vars[AUTH_VARS];
 352 int     auto_thaw              = 0;
 353 #ifdef WITH_CONTENT_SCAN
 354 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 355 #endif
 356
 357 BOOL    background_daemon      = TRUE;
 358
 359 #if BASE_62 == 62
 360 uschar *base62_chars=
 361     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 362 #else
 363 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 364 #endif
 365
 366 uschar *bi_command             = NULL;
 367 uschar *big_buffer             = NULL;
 368 int     big_buffer_size        = BIG_BUFFER_SIZE;
 369 #ifdef EXPERIMENTAL_BRIGHTMAIL
 370 uschar *bmi_alt_location       = NULL;
 371 uschar *bmi_base64_tracker_verdict = NULL;
 372 uschar *bmi_base64_verdict     = NULL;
 373 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 374 int     bmi_deliver            = 1;
 375 int     bmi_run                = 0;
 376 uschar *bmi_verdicts           = NULL;
 377 #endif
 378 int     body_linecount         = 0;
 379 int     body_zerocount         = 0;
 380 uschar *bounce_message_file    = NULL;
 381 uschar *bounce_message_text    = NULL;
 382 uschar *bounce_recipient       = NULL;
 383 BOOL    bounce_return_body     = TRUE;
 384 BOOL    bounce_return_message  = TRUE;
 385 int     bounce_return_size_limit = 100*1024;
 386 uschar *bounce_sender_authentication = NULL;
 387 int     bsmtp_transaction_linecount = 0;
 388
 389 int     callout_cache_domain_positive_expire = 7*24*60*60;
 390 int     callout_cache_domain_negative_expire = 3*60*60;
 391 int     callout_cache_positive_expire = 24*60*60;
 392 int     callout_cache_negative_expire = 2*60*60;
 393 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 394 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\.?)$";
 395 int     check_log_inodes       = 0;
 396 int     check_log_space        = 0;
 397 BOOL    check_rfc2047_length   = TRUE;
 398 int     check_spool_inodes     = 0;
 399 int     check_spool_space      = 0;
 400 int     clmacro_count          = 0;
 401 uschar *clmacros[MAX_CLMACROS];
 402 BOOL    config_changed         = FALSE;
 403 FILE   *config_file            = NULL;
 404 uschar *config_filename        = NULL;
 405 int     config_lineno          = 0;
 406 #ifdef CONFIGURE_GROUP
 407 gid_t   config_gid             = CONFIGURE_GROUP;
 408 #endif
 409 uschar *config_main_filelist   = US CONFIGURE_FILE
 410                          "\0<-----------Space to patch configure_filename->";
 411 uschar *config_main_filename   = NULL;
 412
 413 #ifdef CONFIGURE_OWNER
 414 uid_t   config_uid             = CONFIGURE_OWNER;
 415 #endif
 416
 417 int     connection_max_messages= -1;
 418 uschar *continue_hostname      = NULL;
 419 uschar *continue_host_address  = NULL;
 420 BOOL    continue_more          = FALSE;
 421 int     continue_sequence      = 1;
 422 uschar *continue_transport     = NULL;
 423
 424 uschar *csa_status             = NULL;
 425
 426 BOOL    daemon_listen          = FALSE;
 427 uschar *daemon_smtp_port       = US"smtp";
 428 int     daemon_startup_retries = 9;
 429 int     daemon_startup_sleep   = 30;
 430
 431 #ifdef EXPERIMENTAL_DCC
 432 BOOL    dcc_direct_add_header  = FALSE;
 433 uschar *dcc_header             = NULL;
 434 uschar *dcc_result             = NULL;
 435 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 436 uschar *dccifd_options         = US"header";
 437 #endif
 438
 439 BOOL    debug_daemon           = FALSE;
 440 int     debug_fd               = -1;
 441 FILE   *debug_file             = NULL;
 442 bit_table debug_options[]      = {
 443   { US"acl",            D_acl },
 444   { US"all",            D_all },
 445   { US"auth",           D_auth },
 446   { US"deliver",        D_deliver },
 447   { US"dns",            D_dns },
 448   { US"dnsbl",          D_dnsbl },
 449   { US"exec",           D_exec },
 450   { US"expand",         D_expand },
 451   { US"filter",         D_filter },
 452   { US"hints_lookup",   D_hints_lookup },
 453   { US"host_lookup",    D_host_lookup },
 454   { US"ident",          D_ident },
 455   { US"interface",      D_interface },
 456   { US"lists",          D_lists },
 457   { US"load",           D_load },
 458   { US"local_scan",     D_local_scan },
 459   { US"lookup",         D_lookup },
 460   { US"memory",         D_memory },
 461   { US"pid",            D_pid },
 462   { US"process_info",   D_process_info },
 463   { US"queue_run",      D_queue_run },
 464   { US"receive",        D_receive },
 465   { US"resolver",       D_resolver },
 466   { US"retry",          D_retry },
 467   { US"rewrite",        D_rewrite },
 468   { US"route",          D_route },
 469   { US"timestamp",      D_timestamp },
 470   { US"tls",            D_tls },
 471   { US"transport",      D_transport },
 472   { US"uid",            D_uid },
 473   { US"verify",         D_verify }
 474 };
 475 int     debug_options_count    = sizeof(debug_options)/sizeof(bit_table);
 476 unsigned int debug_selector    = 0;
 477 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 478 uschar *delay_warning_condition=
 479   US"${if or {"
 480             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 481             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 482             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 483             "} {no}{yes}}";
 484 BOOL    delivery_date_remove   = TRUE;
 485 uschar *deliver_address_data   = NULL;
 486 int     deliver_datafile       = -1;
 487 uschar *deliver_domain         = NULL;
 488 uschar *deliver_domain_data    = NULL;
 489 uschar *deliver_domain_orig    = NULL;
 490 uschar *deliver_domain_parent  = NULL;
 491 BOOL    deliver_drop_privilege = FALSE;
 492 BOOL    deliver_firsttime      = FALSE;
 493 BOOL    deliver_force          = FALSE;
 494 BOOL    deliver_freeze         = FALSE;
 495 int     deliver_frozen_at      = 0;
 496 uschar *deliver_home           = NULL;
 497 uschar *deliver_host           = NULL;
 498 uschar *deliver_host_address   = NULL;
 499 uschar *deliver_in_buffer      = NULL;
 500 ino_t   deliver_inode          = 0;
 501 uschar *deliver_localpart      = NULL;
 502 uschar *deliver_localpart_data = NULL;
 503 uschar *deliver_localpart_orig = NULL;
 504 uschar *deliver_localpart_parent = NULL;
 505 uschar *deliver_localpart_prefix = NULL;
 506 uschar *deliver_localpart_suffix = NULL;
 507 BOOL    deliver_force_thaw     = FALSE;
 508 BOOL    deliver_manual_thaw    = FALSE;
 509 uschar *deliver_out_buffer     = NULL;
 510 int     deliver_queue_load_max = -1;
 511 address_item  *deliver_recipients = NULL;
 512 uschar *deliver_selectstring   = NULL;
 513 BOOL    deliver_selectstring_regex = FALSE;
 514 uschar *deliver_selectstring_sender = NULL;
 515 BOOL    deliver_selectstring_sender_regex = FALSE;
 516 #ifdef WITH_OLD_DEMIME
 517 int     demime_errorlevel      = 0;
 518 int     demime_ok              = 0;
 519 uschar *demime_reason          = NULL;
 520 #endif
 521 BOOL    disable_callout_flush  = FALSE;
 522 BOOL    disable_delay_flush    = FALSE;
 523 #ifdef ENABLE_DISABLE_FSYNC
 524 BOOL    disable_fsync          = FALSE;
 525 #endif
 526 BOOL    disable_ipv6           = FALSE;
 527 BOOL    disable_logging        = FALSE;
 528
 529 #ifndef DISABLE_DKIM
 530 uschar *dkim_signing_domain      = NULL;
 531 uschar *dkim_signing_selector    = NULL;
 532 int     dkim_do_verify           = 0;
 533 int     dkim_collect_input       = 0;
 534 #endif
 535
 536 uschar *dns_again_means_nonexist = NULL;
 537 int     dns_csa_search_limit   = 5;
 538 BOOL    dns_csa_use_reverse    = TRUE;
 539 uschar *dns_ipv4_lookup        = NULL;
 540 int     dns_retrans            = 0;
 541 int     dns_retry              = 0;
 542 uschar *dnslist_domain         = NULL;
 543 uschar *dnslist_matched        = NULL;
 544 uschar *dnslist_text           = NULL;
 545 uschar *dnslist_value          = NULL;
 546 tree_node *domainlist_anchor   = NULL;
 547 int     domainlist_count       = 0;
 548 BOOL    dont_deliver           = FALSE;
 549 BOOL    dot_ends               = TRUE;
 550 BOOL    drop_cr                = FALSE;         /* No longer used */
 551 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 552
 553 BOOL    enable_dollar_recipients = FALSE;
 554 BOOL    envelope_to_remove     = TRUE;
 555 int     errno_quota            = ERRNO_QUOTA;
 556 uschar *errors_copy            = NULL;
 557 int     error_handling         = ERRORS_SENDER;
 558 uschar *errors_reply_to        = NULL;
 559 int     errors_sender_rc       = EXIT_FAILURE;
 560
 561 gid_t   exim_gid               = EXIM_GID;
 562 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 563 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 564                         "\0<---------------Space to patch exim_path->";
 565 uid_t   exim_uid               = EXIM_UID;
 566 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 567 int     expand_forbid          = 0;
 568 int     expand_nlength[EXPAND_MAXN+1];
 569 int     expand_nmax            = -1;
 570 uschar *expand_nstring[EXPAND_MAXN+1];
 571 BOOL    expand_string_forcedfail = FALSE;
 572 uschar *expand_string_message;
 573 BOOL    extract_addresses_remove_arguments = TRUE;
 574 uschar *extra_local_interfaces = NULL;
 575
 576 int     fake_response          = OK;
 577 uschar *fake_response_text     = US"Your message has been rejected but is "
 578                                    "being kept for evaluation.\nIf it was a "
 579                                    "legitimate message, it may still be "
 580                                    "delivered to the target recipient(s).";
 581 int     filter_n[FILTER_VARIABLE_COUNT];
 582 BOOL    filter_running         = FALSE;
 583 int     filter_sn[FILTER_VARIABLE_COUNT];
 584 int     filter_test            = FTEST_NONE;
 585 uschar *filter_test_sfile      = NULL;
 586 uschar *filter_test_ufile      = NULL;
 587 uschar *filter_thisaddress     = NULL;
 588 int     finduser_retries       = 0;
 589 #ifdef WITH_OLD_DEMIME
 590 uschar *found_extension        = NULL;
 591 #endif
 592 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 593 uschar *freeze_tell            = NULL;
 594 uschar *freeze_tell_config     = NULL;
 595 uschar *fudged_queue_times     = US"";
 596
 597 uschar *gecos_name             = NULL;
 598 uschar *gecos_pattern          = NULL;
 599 rewrite_rule  *global_rewrite_rules = NULL;
 600
 601 uschar *headers_charset        = US HEADERS_CHARSET;
 602 int     header_insert_maxlen   = 64 * 1024;
 603 header_line  *header_last      = NULL;
 604 header_line  *header_list      = NULL;
 605 int     header_maxsize         = HEADER_MAXSIZE;
 606 int     header_line_maxsize    = 0;
 607
 608 header_name header_names[] = {
 609   { US"bcc",            3, TRUE,  htype_bcc },
 610   { US"cc",             2, TRUE,  htype_cc },
 611   { US"date",           4, TRUE,  htype_date },
 612   { US"delivery-date", 13, FALSE, htype_delivery_date },
 613   { US"envelope-to",   11, FALSE, htype_envelope_to },
 614   { US"from",           4, TRUE,  htype_from },
 615   { US"message-id",    10, TRUE,  htype_id },
 616   { US"received",       8, FALSE, htype_received },
 617   { US"reply-to",       8, FALSE, htype_reply_to },
 618   { US"return-path",   11, FALSE, htype_return_path },
 619   { US"sender",         6, TRUE,  htype_sender },
 620   { US"subject",        7, FALSE, htype_subject },
 621   { US"to",             2, TRUE,  htype_to }
 622 };
 623
 624 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 625
 626 BOOL    header_rewritten       = FALSE;
 627 uschar *helo_accept_junk_hosts = NULL;
 628 uschar *helo_allow_chars       = US"";
 629 uschar *helo_lookup_domains    = US"@ : @[]";
 630 uschar *helo_try_verify_hosts  = NULL;
 631 BOOL    helo_verified          = FALSE;
 632 BOOL    helo_verify_failed     = FALSE;
 633 uschar *helo_verify_hosts      = NULL;
 634 uschar *hex_digits             = US"0123456789abcdef";
 635 uschar *hold_domains           = NULL;
 636 BOOL    host_checking          = FALSE;
 637 BOOL    host_checking_callout  = FALSE;
 638 uschar *host_data              = NULL;
 639 BOOL    host_find_failed_syntax= FALSE;
 640 uschar *host_lookup            = NULL;
 641 BOOL    host_lookup_deferred   = FALSE;
 642 BOOL    host_lookup_failed     = FALSE;
 643 uschar *host_lookup_order      = US"bydns:byaddr";
 644 uschar *host_lookup_msg        = US"";
 645 int     host_number            = 0;
 646 uschar *host_number_string     = NULL;
 647 uschar *host_reject_connection = NULL;
 648 tree_node *hostlist_anchor     = NULL;
 649 int     hostlist_count         = 0;
 650 uschar *hosts_treat_as_local   = NULL;
 651 uschar *hosts_connection_nolog = NULL;
 652
 653 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 654 BOOL    ignore_fromline_local  = FALSE;
 655 uschar *ignore_fromline_hosts  = NULL;
 656 uschar *interface_address      = NULL;
 657 int     interface_port         = -1;
 658 BOOL    is_inetd               = FALSE;
 659 uschar *iterate_item           = NULL;
 660
 661 int     journal_fd             = -1;
 662
 663 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 664
 665 uschar *eldap_dn               = NULL;
 666 int     load_average           = -2;
 667 BOOL    local_error_message    = FALSE;
 668 BOOL    local_from_check       = TRUE;
 669 uschar *local_from_prefix      = NULL;
 670 uschar *local_from_suffix      = NULL;
 671
 672 #if HAVE_IPV6
 673 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 674 #else
 675 uschar *local_interfaces       = US"0.0.0.0";
 676 #endif
 677
 678 uschar *local_scan_data        = NULL;
 679 int     local_scan_timeout     = 5*60;
 680 BOOL    local_sender_retain    = FALSE;
 681 gid_t   local_user_gid         = (gid_t)(-1);
 682 uid_t   local_user_uid         = (uid_t)(-1);
 683
 684 tree_node *localpartlist_anchor= NULL;
 685 int     localpartlist_count    = 0;
 686 uschar *log_buffer             = NULL;
 687 unsigned int log_extra_selector = LX_default;
 688 uschar *log_file_path          = US LOG_FILE_PATH
 689                            "\0<--------------Space to patch log_file_path->";
 690
 691 /* Those log options with L_xxx identifiers have values less than 0x800000 and
 692 are the ones that get put into log_write_selector. They can be used in calls to
 693 log_write() to test for the bit. The options with LX_xxx identifiers have
 694 values greater than 0x80000000 and are put int log_extra_selector (without the
 695 top bit). They are never used in calls to log_write(), but are tested
 696 independently. This separation became necessary when the number of log
 697 selectors was getting close to filling a 32-bit word. */
 698
 699 /* Note that this list must be in alphabetical order. */
 700
 701 bit_table log_options[]        = {
 702   { US"acl_warn_skipped",             LX_acl_warn_skipped },
 703   { US"address_rewrite",              L_address_rewrite },
 704   { US"all",                          L_all },
 705   { US"all_parents",                  L_all_parents },
 706   { US"arguments",                    LX_arguments },
 707   { US"connection_reject",            L_connection_reject },
 708   { US"delay_delivery",               L_delay_delivery },
 709   { US"deliver_time",                 LX_deliver_time },
 710   { US"delivery_size",                LX_delivery_size },
 711   { US"dnslist_defer",                L_dnslist_defer },
 712   { US"etrn",                         L_etrn },
 713   { US"host_lookup_failed",           L_host_lookup_failed },
 714   { US"ident_timeout",                LX_ident_timeout },
 715   { US"incoming_interface",           LX_incoming_interface },
 716   { US"incoming_port",                LX_incoming_port },
 717   { US"lost_incoming_connection",     L_lost_incoming_connection },
 718   { US"outgoing_port",                LX_outgoing_port },
 719   { US"pid",                          LX_pid },
 720   { US"queue_run",                    L_queue_run },
 721   { US"queue_time",                   LX_queue_time },
 722   { US"queue_time_overall",           LX_queue_time_overall },
 723   { US"received_recipients",          LX_received_recipients },
 724   { US"received_sender",              LX_received_sender },
 725   { US"rejected_header",              LX_rejected_header },
 726   { US"rejected_headers",             LX_rejected_header },
 727   { US"retry_defer",                  L_retry_defer },
 728   { US"return_path_on_delivery",      LX_return_path_on_delivery },
 729   { US"sender_on_delivery",           LX_sender_on_delivery },
 730   { US"sender_verify_fail",           LX_sender_verify_fail },
 731   { US"size_reject",                  L_size_reject },
 732   { US"skip_delivery",                L_skip_delivery },
 733   { US"smtp_confirmation",            LX_smtp_confirmation },
 734   { US"smtp_connection",              L_smtp_connection },
 735   { US"smtp_incomplete_transaction",  L_smtp_incomplete_transaction },
 736   { US"smtp_no_mail",                 LX_smtp_no_mail },
 737   { US"smtp_protocol_error",          L_smtp_protocol_error },
 738   { US"smtp_syntax_error",            L_smtp_syntax_error },
 739   { US"subject",                      LX_subject },
 740   { US"tls_certificate_verified",     LX_tls_certificate_verified },
 741   { US"tls_cipher",                   LX_tls_cipher },
 742   { US"tls_peerdn",                   LX_tls_peerdn },
 743   { US"unknown_in_list",              LX_unknown_in_list }
 744 };
 745
 746 int     log_options_count      = sizeof(log_options)/sizeof(bit_table);
 747 int     log_reject_target      = 0;
 748 uschar *log_selector_string    = NULL;
 749 FILE   *log_stderr             = NULL;
 750 BOOL    log_testing_mode       = FALSE;
 751 BOOL    log_timezone           = FALSE;
 752 unsigned int log_write_selector= L_default;
 753 uschar *login_sender_address   = NULL;
 754 int     lookup_open_max        = 25;
 755 uschar *lookup_value           = NULL;
 756
 757 macro_item  *macros            = NULL;
 758 uschar *mailstore_basename     = NULL;
 759 #ifdef WITH_CONTENT_SCAN
 760 uschar *malware_name           = NULL;  /* Virus Name */
 761 #endif
 762 int     max_received_linelength= 0;
 763 int     max_username_length    = 0;
 764 int     message_age            = 0;
 765 uschar *message_body           = NULL;
 766 uschar *message_body_end       = NULL;
 767 BOOL    message_body_newlines  = FALSE;
 768 int     message_body_size      = 0;
 769 int     message_body_visible   = 500;
 770 int     message_ended          = END_NOTSTARTED;
 771 uschar *message_headers        = NULL;
 772 uschar *message_id;
 773 uschar *message_id_domain      = NULL;
 774 uschar *message_id_text        = NULL;
 775 struct timeval message_id_tv   = { 0, 0 };
 776 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 777 uschar *message_id_external;
 778 int     message_linecount      = 0;
 779 BOOL    message_logs           = TRUE;
 780 int     message_size           = 0;
 781 uschar *message_size_limit     = US"50M";
 782 uschar  message_subdir[2]      = { 0, 0 };
 783 uschar *message_reference      = NULL;
 784
 785 /* MIME ACL expandables */
 786 #ifdef WITH_CONTENT_SCAN
 787 int     mime_anomaly_level     = 0;
 788 uschar *mime_anomaly_text      = NULL;
 789 uschar *mime_boundary          = NULL;
 790 uschar *mime_charset           = NULL;
 791 uschar *mime_content_description = NULL;
 792 uschar *mime_content_disposition = NULL;
 793 uschar *mime_content_id        = NULL;
 794 unsigned int mime_content_size = 0;
 795 uschar *mime_content_transfer_encoding = NULL;
 796 uschar *mime_content_type      = NULL;
 797 uschar *mime_decoded_filename  = NULL;
 798 uschar *mime_filename          = NULL;
 799 int     mime_is_multipart      = 0;
 800 int     mime_is_coverletter    = 0;
 801 int     mime_is_rfc822         = 0;
 802 int     mime_part_count        = -1;
 803 #endif
 804
 805 BOOL    mua_wrapper            = FALSE;
 806
 807 uid_t  *never_users            = NULL;
 808 #ifdef WITH_CONTENT_SCAN
 809 BOOL    no_mbox_unspool        = FALSE;
 810 #endif
 811 BOOL    no_multiline_responses = FALSE;
 812
 813 uid_t   original_euid;
 814 gid_t   originator_gid;
 815 uschar *originator_login       = NULL;
 816 uschar *originator_name        = NULL;
 817 uid_t   originator_uid;
 818 uschar *override_local_interfaces = NULL;
 819 uschar *override_pid_file_path = NULL;
 820
 821 BOOL    parse_allow_group      = FALSE;
 822 BOOL    parse_found_group      = FALSE;
 823 uschar *percent_hack_domains   = NULL;
 824 uschar *pid_file_path          = US PID_FILE_PATH
 825                            "\0<--------------Space to patch pid_file_path->";
 826 BOOL    pipelining_enable      = TRUE;
 827 uschar *pipelining_advertise_hosts = US"*";
 828 BOOL    preserve_message_logs  = FALSE;
 829 uschar *primary_hostname       = NULL;
 830 BOOL    print_topbitchars      = FALSE;
 831 uschar  process_info[PROCESS_INFO_SIZE];
 832 uschar *process_log_path       = NULL;
 833 BOOL    prod_requires_admin    = TRUE;
 834 uschar *prvscheck_address      = NULL;
 835 uschar *prvscheck_keynum       = NULL;
 836 uschar *prvscheck_result       = NULL;
 837
 838
 839 uschar *qualify_domain_recipient = NULL;
 840 uschar *qualify_domain_sender  = NULL;
 841 BOOL    queue_2stage           = FALSE;
 842 uschar *queue_domains          = NULL;
 843 int     queue_interval         = -1;
 844 BOOL    queue_list_requires_admin = TRUE;
 845 BOOL    queue_only             = FALSE;
 846 uschar *queue_only_file        = NULL;
 847 int     queue_only_load        = -1;
 848 BOOL    queue_only_load_latch  = TRUE;
 849 BOOL    queue_only_override    = TRUE;
 850 BOOL    queue_only_policy      = FALSE;
 851 BOOL    queue_run_first_delivery = FALSE;
 852 BOOL    queue_run_force        = FALSE;
 853 BOOL    queue_run_in_order     = FALSE;
 854 BOOL    queue_run_local        = FALSE;
 855 int     queue_run_max          = 5;
 856 pid_t   queue_run_pid          = (pid_t)0;
 857 int     queue_run_pipe         = -1;
 858 BOOL    queue_running          = FALSE;
 859 BOOL    queue_smtp             = FALSE;
 860 uschar *queue_smtp_domains     = NULL;
 861
 862 unsigned int random_seed       = 0;
 863 tree_node *ratelimiters_cmd    = NULL;
 864 tree_node *ratelimiters_conn   = NULL;
 865 tree_node *ratelimiters_mail   = NULL;
 866 uschar *raw_active_hostname    = NULL;
 867 uschar *raw_sender             = NULL;
 868 uschar **raw_recipients        = NULL;
 869 int     raw_recipients_count   = 0;
 870
 871 int     rcpt_count             = 0;
 872 int     rcpt_fail_count        = 0;
 873 int     rcpt_defer_count       = 0;
 874 gid_t   real_gid;
 875 uid_t   real_uid;
 876 BOOL    really_exim            = TRUE;
 877 BOOL    receive_call_bombout   = FALSE;
 878 int     receive_linecount      = 0;
 879 int     receive_messagecount   = 0;
 880 int     receive_timeout        = 0;
 881 int     received_count         = 0;
 882 uschar *received_for           = NULL;
 883
 884 /*  This is the default text for Received headers generated by Exim. The
 885 date  will be automatically added on the end. */
 886
 887 uschar *received_header_text   = US
 888      "Received: "
 889      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
 890      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
 891      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
 892      "by $primary_hostname "
 893      "${if def:received_protocol {with $received_protocol}} "
 894      #ifdef SUPPORT_TLS
 895      "${if def:tls_cipher {($tls_cipher)\n\t}}"
 896      #endif
 897      "(Exim $version_number)\n\t"
 898      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
 899      "id $message_exim_id"
 900      "${if def:received_for {\n\tfor $received_for}}"
 901      "\0<---------------Space to patch received_header_text->";
 902
 903 int     received_headers_max   = 30;
 904 uschar *received_protocol      = NULL;
 905 int     received_time          = 0;
 906 uschar *recipient_data         = NULL;
 907 uschar *recipient_unqualified_hosts = NULL;
 908 uschar *recipient_verify_failure = NULL;
 909 int     recipients_count       = 0;
 910 BOOL    recipients_discarded   = FALSE;
 911 recipient_item  *recipients_list = NULL;
 912 int     recipients_list_max    = 0;
 913 int     recipients_max         = 0;
 914 BOOL    recipients_max_reject  = FALSE;
 915 const pcre *regex_AUTH         = NULL;
 916 const pcre *regex_check_dns_names = NULL;
 917 const pcre *regex_From         = NULL;
 918 const pcre *regex_IGNOREQUOTA  = NULL;
 919 const pcre *regex_PIPELINING   = NULL;
 920 const pcre *regex_SIZE         = NULL;
 921 const pcre *regex_smtp_code    = NULL;
 922 const pcre *regex_ismsgid      = NULL;
 923 #ifdef WITH_CONTENT_SCAN
 924 uschar *regex_match_string     = NULL;
 925 #endif
 926 int     remote_delivery_count  = 0;
 927 int     remote_max_parallel    = 2;
 928 uschar *remote_sort_domains    = NULL;
 929 int     retry_data_expire      = 7*24*60*60;
 930 int     retry_interval_max     = 24*60*60;
 931 int     retry_maximum_timeout  = 0;        /* set from retry config */
 932 retry_config  *retries         = NULL;
 933 uschar *return_path            = NULL;
 934 BOOL    return_path_remove     = TRUE;
 935 int     rewrite_existflags     = 0;
 936 uschar *rfc1413_hosts          = US"*";
 937 int     rfc1413_query_timeout  = 5;
 938 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
 939 uid_t   root_uid               = ROOT_UID;
 940
 941 router_instance  *routers  = NULL;
 942 router_instance  router_defaults = {
 943     NULL,                      /* chain pointer */
 944     NULL,                      /* name */
 945     NULL,                      /* info */
 946     NULL,                      /* private options block pointer */
 947     NULL,                      /* driver name */
 948
 949     NULL,                      /* address_data */
 950 #ifdef EXPERIMENTAL_BRIGHTMAIL
 951     NULL,                      /* bmi_rule */
 952 #endif
 953     NULL,                      /* cannot_route_message */
 954     NULL,                      /* condition */
 955     NULL,                      /* current_directory */
 956     NULL,                      /* debug_string */
 957     NULL,                      /* domains */
 958     NULL,                      /* errors_to */
 959     NULL,                      /* expand_gid */
 960     NULL,                      /* expand_uid */
 961     NULL,                      /* expand_more */
 962     NULL,                      /* expand_unseen */
 963     NULL,                      /* extra_headers */
 964     NULL,                      /* fallback_hosts */
 965     NULL,                      /* home_directory */
 966     NULL,                      /* ignore_target_hosts */
 967     NULL,                      /* local_parts */
 968     NULL,                      /* pass_router_name */
 969     NULL,                      /* prefix */
 970     NULL,                      /* redirect_router_name */
 971     NULL,                      /* remove_headers */
 972     NULL,                      /* require_files */
 973     NULL,                      /* router_home_directory */
 974     US"freeze",                /* self */
 975     NULL,                      /* senders */
 976     NULL,                      /* suffix */
 977     NULL,                      /* translate_ip_address */
 978     NULL,                      /* transport_name */
 979
 980     TRUE,                      /* address_test */
 981 #ifdef EXPERIMENTAL_BRIGHTMAIL
 982     FALSE,                     /* bmi_deliver_alternate */
 983     FALSE,                     /* bmi_deliver_default */
 984     FALSE,                     /* bmi_dont_deliver */
 985 #endif
 986     TRUE,                      /* expn */
 987     FALSE,                     /* caseful_local_part */
 988     FALSE,                     /* check_local_user */
 989     FALSE,                     /* disable_logging */
 990     FALSE,                     /* fail_verify_recipient */
 991     FALSE,                     /* fail_verify_sender */
 992     FALSE,                     /* gid_set */
 993     FALSE,                     /* initgroups */
 994     TRUE_UNSET,                /* log_as_local */
 995     TRUE,                      /* more */
 996     FALSE,                     /* pass_on_timeout */
 997     FALSE,                     /* prefix_optional */
 998     TRUE,                      /* repeat_use */
 999     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1000     FALSE,                     /* same_domain_copy_routing */
1001     FALSE,                     /* self_rewrite */
1002     FALSE,                     /* suffix_optional */
1003     FALSE,                     /* verify_only */
1004     TRUE,                      /* verify_recipient */
1005     TRUE,                      /* verify_sender */
1006     FALSE,                     /* uid_set */
1007     FALSE,                     /* unseen */
1008
1009     self_freeze,               /* self_code */
1010     (uid_t)(-1),               /* uid */
1011     (gid_t)(-1),               /* gid */
1012
1013     NULL,                      /* fallback_hostlist */
1014     NULL,                      /* transport instance */
1015     NULL,                      /* pass_router */
1016     NULL                       /* redirect_router */
1017 };
1018
1019 ip_address_item *running_interfaces = NULL;
1020 BOOL    running_in_test_harness = FALSE;
1021
1022 /* This is a weird one. The following string gets patched in the binary by the
1023 script that sets up a copy of Exim for running in the test harness. It seems
1024 that compilers are now clever, and share constant strings if they can.
1025 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1026 make use of the end of this string in order to save space. So the patching then
1027 wrecks this. We defeat this optimization by adding some additional characters
1028 onto the end of the string. */
1029
1030 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1031
1032 int     runrc                  = 0;
1033
1034 uschar *search_error_message   = NULL;
1035 BOOL    search_find_defer      = FALSE;
1036 uschar *self_hostname          = NULL;
1037 uschar *sender_address         = NULL;
1038 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1039 uschar *sender_address_data    = NULL;
1040 BOOL    sender_address_forced  = FALSE;
1041 uschar *sender_address_unrewritten = NULL;
1042 uschar *sender_data            = NULL;
1043 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1044 uschar *sender_fullhost        = NULL;
1045 uschar *sender_helo_name       = NULL;
1046 uschar **sender_host_aliases   = &no_aliases;
1047 uschar *sender_host_address    = NULL;
1048 uschar *sender_host_authenticated = NULL;
1049 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1050 uschar *sender_host_name       = NULL;
1051 int     sender_host_port       = 0;
1052 BOOL    sender_host_notsocket  = FALSE;
1053 BOOL    sender_host_unknown    = FALSE;
1054 uschar *sender_ident           = NULL;
1055 BOOL    sender_local           = FALSE;
1056 BOOL    sender_name_forced     = FALSE;
1057 uschar *sender_rate            = NULL;
1058 uschar *sender_rate_limit      = NULL;
1059 uschar *sender_rate_period     = NULL;
1060 uschar *sender_rcvhost         = NULL;
1061 BOOL    sender_set_untrusted   = FALSE;
1062 uschar *sender_unqualified_hosts = NULL;
1063 uschar *sender_verify_failure = NULL;
1064 address_item *sender_verified_list  = NULL;
1065 address_item *sender_verified_failed = NULL;
1066 int     sender_verified_rc     = -1;
1067 BOOL    sender_verified_responded = FALSE;
1068 uschar *sending_ip_address     = NULL;
1069 int     sending_port           = -1;
1070 volatile  BOOL sigalrm_seen    = FALSE;
1071 uschar **sighup_argv           = NULL;
1072 int     smtp_accept_count      = 0;
1073 BOOL    smtp_accept_keepalive  = TRUE;
1074 int     smtp_accept_max        = 20;
1075 int     smtp_accept_max_nonmail= 10;
1076 uschar *smtp_accept_max_nonmail_hosts = US"*";
1077 int     smtp_accept_max_per_connection = 1000;
1078 uschar *smtp_accept_max_per_host = NULL;
1079 int     smtp_accept_queue      = 0;
1080 int     smtp_accept_queue_per_connection = 10;
1081 int     smtp_accept_reserve    = 0;
1082 uschar *smtp_active_hostname   = NULL;
1083 BOOL    smtp_authenticated     = FALSE;
1084 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1085                              "Exim $version_number $tod_full"
1086                              "\0<---------------Space to patch smtp_banner->";
1087 BOOL    smtp_batched_input     = FALSE;
1088 BOOL    smtp_check_spool_space = TRUE;
1089 int     smtp_ch_index          = 0;
1090 uschar *smtp_cmd_argument      = NULL;
1091 uschar *smtp_cmd_buffer        = NULL;
1092 time_t  smtp_connection_start  = 0;
1093 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1094 int     smtp_connect_backlog   = 20;
1095 double  smtp_delay_mail        = 0.0;
1096 double  smtp_delay_rcpt        = 0.0;
1097 BOOL    smtp_enforce_sync      = TRUE;
1098 FILE   *smtp_in                = NULL;
1099 BOOL    smtp_input             = FALSE;
1100 int     smtp_load_reserve      = -1;
1101 int     smtp_mailcmd_count     = 0;
1102 FILE   *smtp_out               = NULL;
1103 uschar *smtp_etrn_command      = NULL;
1104 BOOL    smtp_etrn_serialize    = TRUE;
1105 int     smtp_max_synprot_errors= 3;
1106 int     smtp_max_unknown_commands = 3;
1107 uschar *smtp_notquit_reason    = NULL;
1108 uschar *smtp_ratelimit_hosts   = NULL;
1109 uschar *smtp_ratelimit_mail    = NULL;
1110 uschar *smtp_ratelimit_rcpt    = NULL;
1111 uschar *smtp_read_error        = US"";
1112 int     smtp_receive_timeout   = 5*60;
1113 uschar *smtp_reserve_hosts     = NULL;
1114 BOOL    smtp_return_error_details = FALSE;
1115 int     smtp_rlm_base          = 0;
1116 double  smtp_rlm_factor        = 0.0;
1117 int     smtp_rlm_limit         = 0;
1118 int     smtp_rlm_threshold     = INT_MAX;
1119 int     smtp_rlr_base          = 0;
1120 double  smtp_rlr_factor        = 0.0;
1121 int     smtp_rlr_limit         = 0;
1122 int     smtp_rlr_threshold     = INT_MAX;
1123 BOOL    smtp_use_pipelining    = FALSE;
1124 BOOL    smtp_use_size          = FALSE;
1125
1126 #ifdef WITH_CONTENT_SCAN
1127 uschar *spamd_address          = US"127.0.0.1 783";
1128 uschar *spam_bar               = NULL;
1129 uschar *spam_report            = NULL;
1130 uschar *spam_score             = NULL;
1131 uschar *spam_score_int         = NULL;
1132 #endif
1133 #ifdef EXPERIMENTAL_SPF
1134 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1135 uschar *spf_header_comment     = NULL;
1136 uschar *spf_received           = NULL;
1137 uschar *spf_result             = NULL;
1138 uschar *spf_smtp_comment       = NULL;
1139 #endif
1140
1141 BOOL    split_spool_directory  = FALSE;
1142 uschar *spool_directory        = US SPOOL_DIRECTORY
1143                            "\0<--------------Space to patch spool_directory->";
1144 #ifdef EXPERIMENTAL_SRS
1145 uschar *srs_config             = NULL;
1146 uschar *srs_db_address         = NULL;
1147 uschar *srs_db_key             = NULL;
1148 int     srs_hashlength         = 6;
1149 int     srs_hashmin            = -1;
1150 int     srs_maxage             = 31;
1151 uschar *srs_orig_recipient     = NULL;
1152 uschar *srs_orig_sender        = NULL;
1153 uschar *srs_recipient          = NULL;
1154 uschar *srs_secrets            = NULL;
1155 uschar *srs_status             = NULL;
1156 BOOL    srs_usehash            = TRUE;
1157 BOOL    srs_usetimestamp       = TRUE;
1158 #endif
1159 BOOL    strict_acl_vars        = FALSE;
1160 int     string_datestamp_offset= -1;
1161 BOOL    strip_excess_angle_brackets = FALSE;
1162 BOOL    strip_trailing_dot     = FALSE;
1163 uschar *submission_domain      = NULL;
1164 BOOL    submission_mode        = FALSE;
1165 uschar *submission_name        = NULL;
1166 BOOL    suppress_local_fixups  = FALSE;
1167 BOOL    synchronous_delivery   = FALSE;
1168 BOOL    syslog_duplication     = TRUE;
1169 int     syslog_facility        = LOG_MAIL;
1170 uschar *syslog_processname     = US"exim";
1171 BOOL    syslog_timestamp       = TRUE;
1172 uschar *system_filter          = NULL;
1173
1174 uschar *system_filter_directory_transport = NULL;
1175 uschar *system_filter_file_transport = NULL;
1176 uschar *system_filter_pipe_transport = NULL;
1177 uschar *system_filter_reply_transport = NULL;
1178
1179 gid_t   system_filter_gid      = 0;
1180 BOOL    system_filter_gid_set  = FALSE;
1181 uid_t   system_filter_uid      = 0;
1182 BOOL    system_filter_uid_set  = FALSE;
1183 BOOL    system_filtering       = FALSE;
1184
1185 BOOL    tcp_nodelay            = TRUE;
1186 int     test_harness_load_avg  = 0;
1187 int     thismessage_size_limit = 0;
1188 int     timeout_frozen_after   = 0;
1189 BOOL    timestamps_utc         = FALSE;
1190
1191 transport_instance  *transports = NULL;
1192
1193 transport_instance  transport_defaults = {
1194     NULL,                     /* chain pointer */
1195     NULL,                     /* name */
1196     NULL,                     /* info */
1197     NULL,                     /* private options block pointer */
1198     NULL,                     /* driver name */
1199     NULL,                     /* setup entry point */
1200     1,                        /* batch_max */
1201     NULL,                     /* batch_id */
1202     NULL,                     /* home_dir */
1203     NULL,                     /* current_dir */
1204     TRUE,                     /* multi-domain */
1205     FALSE,                    /* overrides_hosts */
1206     100,                      /* max_addresses */
1207     500,                      /* connection_max_messages */
1208     FALSE,                    /* deliver_as_creator */
1209     FALSE,                    /* disable_logging */
1210     FALSE,                    /* initgroups */
1211     FALSE,                    /* uid_set */
1212     FALSE,                    /* gid_set */
1213     (uid_t)(-1),              /* uid */
1214     (gid_t)(-1),              /* gid */
1215     NULL,                     /* expand_uid */
1216     NULL,                     /* expand_gid */
1217     NULL,                     /* warn_message */
1218     NULL,                     /* shadow */
1219     NULL,                     /* shadow_condition */
1220     NULL,                     /* filter_command */
1221     NULL,                     /* add_headers */
1222     NULL,                     /* remove_headers */
1223     NULL,                     /* return_path */
1224     NULL,                     /* debug_string */
1225     NULL,                     /* message_size_limit */
1226     NULL,                     /* headers_rewrite */
1227     NULL,                     /* rewrite_rules */
1228     0,                        /* rewrite_existflags */
1229     300,                      /* filter_timeout */
1230     FALSE,                    /* body_only */
1231     FALSE,                    /* delivery_date_add */
1232     FALSE,                    /* envelope_to_add */
1233     FALSE,                    /* headers_only */
1234     FALSE,                    /* rcpt_include_affixes */
1235     FALSE,                    /* return_path_add */
1236     FALSE,                    /* return_output */
1237     FALSE,                    /* return_fail_output */
1238     FALSE,                    /* log_output */
1239     FALSE,                    /* log_fail_output */
1240     FALSE,                    /* log_defer_output */
1241     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1242                                  1 nor 0 so can detect unset */
1243 };
1244
1245 int     transport_count;
1246 uschar **transport_filter_argv  = NULL;
1247 int     transport_filter_timeout;
1248 BOOL    transport_filter_timed_out = FALSE;
1249 int     transport_write_timeout= 0;
1250
1251 tree_node  *tree_dns_fails     = NULL;
1252 tree_node  *tree_duplicates    = NULL;
1253 tree_node  *tree_nonrecipients = NULL;
1254 tree_node  *tree_unusable      = NULL;
1255
1256 BOOL    trusted_caller         = FALSE;
1257 gid_t  *trusted_groups         = NULL;
1258 uid_t  *trusted_users          = NULL;
1259 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1260
1261 uschar *unknown_login          = NULL;
1262 uschar *unknown_username       = NULL;
1263 uschar *untrusted_set_sender   = NULL;
1264
1265 /*  A regex for matching a "From_" line in an incoming message, in the form
1266
1267     From ph10 Fri Jan  5 12:35 GMT 1996
1268
1269 which  the "mail" commands send to the MTA (undocumented, of course), or in
1270 the  form
1271
1272     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1273
1274 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1275 Because  of variations in time formats, just match up to the minutes. That
1276 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1277 so  just require one digit for hours and minutes. The weekday is also absent
1278 in  some forms. */
1279
1280 uschar *uucp_from_pattern      = US
1281    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1282    "(?:"                                          /* Non-extracting bracket */
1283    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1284    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1285    ")"                                            /* End alternation */
1286    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1287
1288 uschar *uucp_from_sender       = US"$1";
1289
1290 uschar *warn_message_file      = NULL;
1291 uschar *warnmsg_delay          = NULL;
1292 uschar *warnmsg_recipients     = NULL;
1293 BOOL    write_rejectlog        = TRUE;
1294
1295 uschar *version_copyright      = US"Copyright (c) University of Cambridge 2006";
1296 uschar *version_date           = US"?";
1297 uschar *version_cnumber        = US"????";
1298 uschar *version_string         = US"?";
1299
1300 int     warning_count          = 0;
1301
1302 /*  End of globals.c */