src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2015 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8 /* All the global variables are defined together in this one module, so
   9 that they are easy to find. */
  10
  11 #include "exim.h"
  12
  13
  14 /* Generic options for auths, all of which live inside auth_instance
  15 data blocks and hence have the opt_public flag set. */
  16
  17 optionlist optionlist_auths[] = {
  18   { "client_condition", opt_stringptr | opt_public,
  19                  (void *)(offsetof(auth_instance, client_condition)) },
  20   { "client_set_id", opt_stringptr | opt_public,
  21                  (void *)(offsetof(auth_instance, set_client_id)) },
  22   { "driver",        opt_stringptr | opt_public,
  23                  (void *)(offsetof(auth_instance, driver_name)) },
  24   { "public_name",   opt_stringptr | opt_public,
  25                  (void *)(offsetof(auth_instance, public_name)) },
  26   { "server_advertise_condition", opt_stringptr | opt_public,
  27                  (void *)(offsetof(auth_instance, advertise_condition))},
  28   { "server_condition", opt_stringptr | opt_public,
  29                  (void *)(offsetof(auth_instance, server_condition)) },
  30   { "server_debug_print", opt_stringptr | opt_public,
  31                  (void *)(offsetof(auth_instance, server_debug_string)) },
  32   { "server_mail_auth_condition", opt_stringptr | opt_public,
  33                  (void *)(offsetof(auth_instance, mail_auth_condition)) },
  34   { "server_set_id", opt_stringptr | opt_public,
  35                  (void *)(offsetof(auth_instance, set_id)) }
  36 };
  37
  38 int     optionlist_auths_size = sizeof(optionlist_auths)/sizeof(optionlist);
  39
  40 /* An empty host aliases list. */
  41
  42 uschar *no_aliases             = NULL;
  43
  44
  45 /* For comments on these variables, see globals.h. I'm too idle to
  46 duplicate them here... */
  47
  48 #ifdef EXIM_PERL
  49 uschar *opt_perl_startup       = NULL;
  50 BOOL    opt_perl_at_start      = FALSE;
  51 BOOL    opt_perl_started       = FALSE;
  52 #endif
  53
  54 #ifdef EXPAND_DLFUNC
  55 tree_node *dlobj_anchor        = NULL;
  56 #endif
  57
  58 #ifdef LOOKUP_IBASE
  59 uschar *ibase_servers          = NULL;
  60 #endif
  61
  62 #ifdef LOOKUP_LDAP
  63 uschar *eldap_ca_cert_dir      = NULL;
  64 uschar *eldap_ca_cert_file     = NULL;
  65 uschar *eldap_cert_file        = NULL;
  66 uschar *eldap_cert_key         = NULL;
  67 uschar *eldap_cipher_suite     = NULL;
  68 uschar *eldap_default_servers  = NULL;
  69 uschar *eldap_require_cert     = NULL;
  70 int     eldap_version          = -1;
  71 BOOL    eldap_start_tls        = FALSE;
  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 EXPERIMENTAL_REDIS
  87 uschar *redis_servers          = NULL;
  88 #endif
  89
  90 #ifdef LOOKUP_SQLITE
  91 int     sqlite_lock_timeout    = 5;
  92 #endif
  93
  94 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  95 BOOL    move_frozen_messages   = FALSE;
  96 #endif
  97
  98 /* These variables are outside the #ifdef because it keeps the code less
  99 cluttered in several places (e.g. during logging) if we can always refer to
 100 them. Also, the tls_ variables are now always visible. */
 101
 102 tls_support tls_in = {
 103  -1,   /* tls_active */
 104  0,    /* tls_bits */
 105  FALSE,/* tls_certificate_verified */
 106 #ifdef EXPERIMENTAL_DANE
 107  FALSE,/* dane_verified */
 108  0,    /* tlsa_usage */
 109 #endif
 110  NULL, /* tls_cipher */
 111  FALSE,/* tls_on_connect */
 112  NULL, /* tls_on_connect_ports */
 113  NULL, /* tls_ourcert */
 114  NULL, /* tls_peercert */
 115  NULL, /* tls_peerdn */
 116  NULL, /* tls_sni */
 117  0     /* tls_ocsp */
 118 };
 119 tls_support tls_out = {
 120  -1,   /* tls_active */
 121  0,    /* tls_bits */
 122  FALSE,/* tls_certificate_verified */
 123 #ifdef EXPERIMENTAL_DANE
 124  FALSE,/* dane_verified */
 125  0,    /* tlsa_usage */
 126 #endif
 127  NULL, /* tls_cipher */
 128  FALSE,/* tls_on_connect */
 129  NULL, /* tls_on_connect_ports */
 130  NULL, /* tls_ourcert */
 131  NULL, /* tls_peercert */
 132  NULL, /* tls_peerdn */
 133  NULL, /* tls_sni */
 134  0     /* tls_ocsp */
 135 };
 136
 137 uschar *dsn_envid              = NULL;
 138 int     dsn_ret                = 0;
 139 const pcre  *regex_DSN         = NULL;
 140 BOOL    smtp_use_dsn           = FALSE;
 141 uschar *dsn_advertise_hosts    = NULL;
 142
 143 #ifdef SUPPORT_TLS
 144 BOOL    gnutls_compat_mode     = FALSE;
 145 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 146 uschar *gnutls_require_mac     = NULL;
 147 uschar *gnutls_require_kx      = NULL;
 148 uschar *gnutls_require_proto   = NULL;
 149 uschar *openssl_options        = NULL;
 150 const pcre *regex_STARTTLS     = NULL;
 151 uschar *tls_advertise_hosts    = US"*";
 152 uschar *tls_certificate        = NULL;
 153 uschar *tls_crl                = NULL;
 154 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 155 that's the interop problem which has been observed: GnuTLS suggesting a higher
 156 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 157 int     tls_dh_max_bits        = 2236;
 158 uschar *tls_dhparam            = NULL;
 159 uschar *tls_eccurve            = US"prime256v1";
 160 # ifndef DISABLE_OCSP
 161 uschar *tls_ocsp_file          = NULL;
 162 # endif
 163 BOOL    tls_offered            = FALSE;
 164 uschar *tls_privatekey         = NULL;
 165 BOOL    tls_remember_esmtp     = FALSE;
 166 uschar *tls_require_ciphers    = NULL;
 167 uschar *tls_try_verify_hosts   = NULL;
 168 uschar *tls_verify_certificates= US"system";
 169 uschar *tls_verify_hosts       = NULL;
 170 #else   /*!SUPPORT_TLS*/
 171 uschar *tls_advertise_hosts    = NULL;
 172 #endif
 173
 174 #ifndef DISABLE_PRDR
 175 /* Per Recipient Data Response variables */
 176 BOOL    prdr_enable            = FALSE;
 177 BOOL    prdr_requested         = FALSE;
 178 const pcre *regex_PRDR         = NULL;
 179 #endif
 180
 181 #ifdef SUPPORT_I18N
 182 const pcre *regex_UTF8         = NULL;
 183 #endif
 184
 185 /* Input-reading functions for messages, so we can use special ones for
 186 incoming TCP/IP. The defaults use stdin. We never need these for any
 187 stand-alone tests. */
 188
 189 #ifndef STAND_ALONE
 190 int (*receive_getc)(void)      = stdin_getc;
 191 int (*receive_ungetc)(int)     = stdin_ungetc;
 192 int (*receive_feof)(void)      = stdin_feof;
 193 int (*receive_ferror)(void)    = stdin_ferror;
 194 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 195 #endif
 196
 197
 198 /* List of per-address expansion variables for clearing and saving/restoring
 199 when verifying one address while routing/verifying another. We have to have
 200 the size explicit, because it is referenced from more than one module. */
 201
 202 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 203   CUSS &deliver_address_data,
 204   CUSS &deliver_domain,
 205   CUSS &deliver_domain_data,
 206   CUSS &deliver_domain_orig,
 207   CUSS &deliver_domain_parent,
 208   CUSS &deliver_localpart,
 209   CUSS &deliver_localpart_data,
 210   CUSS &deliver_localpart_orig,
 211   CUSS &deliver_localpart_parent,
 212   CUSS &deliver_localpart_prefix,
 213   CUSS &deliver_localpart_suffix,
 214   CUSS (uschar **)(&deliver_recipients),
 215   CUSS &deliver_host,
 216   CUSS &deliver_home,
 217   CUSS &address_file,
 218   CUSS &address_pipe,
 219   CUSS &self_hostname,
 220   NULL };
 221
 222 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 223
 224 /* General global variables */
 225
 226 header_line *acl_added_headers = NULL;
 227 tree_node *acl_anchor          = NULL;
 228 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 229                                   NULL, NULL, NULL, NULL};
 230 int     acl_narg               = 0;
 231
 232 uschar *acl_not_smtp           = NULL;
 233 #ifdef WITH_CONTENT_SCAN
 234 uschar *acl_not_smtp_mime      = NULL;
 235 #endif
 236 uschar *acl_not_smtp_start     = NULL;
 237 uschar *acl_removed_headers    = NULL;
 238 uschar *acl_smtp_auth          = NULL;
 239 uschar *acl_smtp_connect       = NULL;
 240 uschar *acl_smtp_data          = NULL;
 241 #ifndef DISABLE_PRDR
 242 uschar *acl_smtp_data_prdr     = US"accept";
 243 #endif
 244 #ifndef DISABLE_DKIM
 245 uschar *acl_smtp_dkim          = NULL;
 246 #endif
 247 uschar *acl_smtp_etrn          = NULL;
 248 uschar *acl_smtp_expn          = NULL;
 249 uschar *acl_smtp_helo          = NULL;
 250 uschar *acl_smtp_mail          = NULL;
 251 uschar *acl_smtp_mailauth      = NULL;
 252 #ifdef WITH_CONTENT_SCAN
 253 uschar *acl_smtp_mime          = NULL;
 254 #endif
 255 uschar *acl_smtp_notquit       = NULL;
 256 uschar *acl_smtp_predata       = NULL;
 257 uschar *acl_smtp_quit          = NULL;
 258 uschar *acl_smtp_rcpt          = NULL;
 259 uschar *acl_smtp_starttls      = NULL;
 260 uschar *acl_smtp_vrfy          = NULL;
 261
 262 BOOL    acl_temp_details       = FALSE;
 263 tree_node *acl_var_c           = NULL;
 264 tree_node *acl_var_m           = NULL;
 265 uschar *acl_verify_message     = NULL;
 266 string_item *acl_warn_logged   = NULL;
 267
 268 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 269 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 270
 271 uschar *acl_wherenames[]       = { US"RCPT",
 272                                    US"MAIL",
 273                                    US"PREDATA",
 274                                    US"MIME",
 275                                    US"DKIM",
 276                                    US"DATA",
 277 #ifndef DISABLE_PRDR
 278                                    US"PRDR",
 279 #endif
 280                                    US"non-SMTP",
 281                                    US"AUTH",
 282                                    US"connection",
 283                                    US"ETRN",
 284                                    US"EXPN",
 285                                    US"EHLO or HELO",
 286                                    US"MAILAUTH",
 287                                    US"non-SMTP-start",
 288                                    US"NOTQUIT",
 289                                    US"QUIT",
 290                                    US"STARTTLS",
 291                                    US"VRFY",
 292                                    US"delivery",
 293                                    US"unknown"
 294                                  };
 295
 296 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 297                                    US"550",     /* MAIL */
 298                                    US"550",     /* PREDATA */
 299                                    US"550",     /* MIME */
 300                                    US"550",     /* DKIM */
 301                                    US"550",     /* DATA */
 302 #ifndef DISABLE_PRDR
 303                                    US"550",    /* RCPT PRDR */
 304 #endif
 305                                    US"0",       /* not SMTP; not relevant */
 306                                    US"503",     /* AUTH */
 307                                    US"550",     /* connect */
 308                                    US"458",     /* ETRN */
 309                                    US"550",     /* EXPN */
 310                                    US"550",     /* HELO/EHLO */
 311                                    US"0",       /* MAILAUTH; not relevant */
 312                                    US"0",       /* not SMTP; not relevant */
 313                                    US"0",       /* NOTQUIT; not relevant */
 314                                    US"0",       /* QUIT; not relevant */
 315                                    US"550",     /* STARTTLS */
 316                                    US"252",     /* VRFY */
 317                                    US"0",       /* delivery; not relevant */
 318                                    US"0"        /* unknown; not relevant */
 319                                  };
 320
 321 BOOL    active_local_from_check = FALSE;
 322 BOOL    active_local_sender_retain = FALSE;
 323 int     body_8bitmime = 0;
 324 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 325 address_item  *addr_duplicate  = NULL;
 326
 327 address_item address_defaults = {
 328   NULL,                 /* next */
 329   NULL,                 /* parent */
 330   NULL,                 /* first */
 331   NULL,                 /* dupof */
 332   NULL,                 /* start_router */
 333   NULL,                 /* router */
 334   NULL,                 /* transport */
 335   NULL,                 /* host_list */
 336   NULL,                 /* host_used */
 337   NULL,                 /* fallback_hosts */
 338   NULL,                 /* reply */
 339   NULL,                 /* retries */
 340   NULL,                 /* address */
 341   NULL,                 /* unique */
 342   NULL,                 /* cc_local_part */
 343   NULL,                 /* lc_local_part */
 344   NULL,                 /* local_part */
 345   NULL,                 /* prefix */
 346   NULL,                 /* suffix */
 347   NULL,                 /* domain */
 348   NULL,                 /* address_retry_key */
 349   NULL,                 /* domain_retry_key */
 350   NULL,                 /* current_dir */
 351   NULL,                 /* home_dir */
 352   NULL,                 /* message */
 353   NULL,                 /* user_message */
 354   NULL,                 /* onetime_parent */
 355   NULL,                 /* pipe_expandn */
 356   NULL,                 /* return_filename */
 357   NULL,                 /* self_hostname */
 358   NULL,                 /* shadow_message */
 359 #ifdef SUPPORT_TLS
 360   NULL,                 /* cipher */
 361   NULL,                 /* ourcert */
 362   NULL,                 /* peercert */
 363   NULL,                 /* peerdn */
 364   OCSP_NOT_REQ,         /* ocsp */
 365 #endif
 366 #ifdef EXPERIMENTAL_DSN_INFO
 367   NULL,                 /* smtp_greeting */
 368   NULL,                 /* helo_response */
 369 #endif
 370   NULL,                 /* authenticator */
 371   NULL,                 /* auth_id */
 372   NULL,                 /* auth_sndr */
 373   NULL,                 /* dsn_orcpt */
 374   0,                    /* dsn_flags */
 375   0,                    /* dsn_aware */
 376   (uid_t)(-1),          /* uid */
 377   (gid_t)(-1),          /* gid */
 378   0,                    /* flags */
 379   { 0 },                /* domain_cache - any larger array should be zeroed */
 380   { 0 },                /* localpart_cache - ditto */
 381   -1,                   /* mode */
 382   0,                    /* more_errno */
 383   ERRNO_UNKNOWNERROR,   /* basic_errno */
 384   0,                    /* child_count */
 385   -1,                   /* return_file */
 386   SPECIAL_NONE,         /* special_action */
 387   DEFER,                /* transport_return */
 388   {                     /* fields that are propagated to children */
 389     NULL,               /* address_data */
 390     NULL,               /* domain_data */
 391     NULL,               /* localpart_data */
 392     NULL,               /* errors_address */
 393     NULL,               /* extra_headers */
 394     NULL,               /* remove_headers */
 395 #ifdef EXPERIMENTAL_SRS
 396     NULL,               /* srs_sender */
 397 #endif
 398 #ifdef SUPPORT_I18N
 399     FALSE,              /* utf8 */
 400 #endif
 401   }
 402 };
 403
 404 uschar *address_file           = NULL;
 405 uschar *address_pipe           = NULL;
 406 BOOL    address_test_mode      = FALSE;
 407 tree_node *addresslist_anchor  = NULL;
 408 int     addresslist_count      = 0;
 409 gid_t  *admin_groups           = NULL;
 410 BOOL    admin_user             = FALSE;
 411 BOOL    allow_auth_unadvertised= FALSE;
 412 BOOL    allow_domain_literals  = FALSE;
 413 BOOL    allow_mx_to_ip         = FALSE;
 414 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 415 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 416 BOOL    allow_utf8_domains     = FALSE;
 417 uschar *authenticated_fail_id  = NULL;
 418 uschar *authenticated_id       = NULL;
 419 uschar *authenticated_sender   = NULL;
 420 BOOL    authentication_failed  = FALSE;
 421 auth_instance  *auths          = NULL;
 422 uschar *auth_advertise_hosts   = US"*";
 423 auth_instance auth_defaults    = {
 424     NULL,                      /* chain pointer */
 425     NULL,                      /* name */
 426     NULL,                      /* info */
 427     NULL,                      /* private options block pointer */
 428     NULL,                      /* driver_name */
 429     NULL,                      /* advertise_condition */
 430     NULL,                      /* client_condition */
 431     NULL,                      /* public_name */
 432     NULL,                      /* set_id */
 433     NULL,                      /* set_client_id */
 434     NULL,                      /* server_mail_auth_condition */
 435     NULL,                      /* server_debug_string */
 436     NULL,                      /* server_condition */
 437     FALSE,                     /* client */
 438     FALSE,                     /* server */
 439     FALSE                      /* advertised */
 440 };
 441
 442 uschar *auth_defer_msg         = US"reason not recorded";
 443 uschar *auth_defer_user_msg    = US"";
 444 uschar *auth_vars[AUTH_VARS];
 445 int     auto_thaw              = 0;
 446 #ifdef WITH_CONTENT_SCAN
 447 BOOL    av_failed              = FALSE;
 448 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 449 #endif
 450
 451 BOOL    background_daemon      = TRUE;
 452
 453 #if BASE_62 == 62
 454 uschar *base62_chars=
 455     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 456 #else
 457 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 458 #endif
 459
 460 uschar *bi_command             = NULL;
 461 uschar *big_buffer             = NULL;
 462 int     big_buffer_size        = BIG_BUFFER_SIZE;
 463 #ifdef EXPERIMENTAL_BRIGHTMAIL
 464 uschar *bmi_alt_location       = NULL;
 465 uschar *bmi_base64_tracker_verdict = NULL;
 466 uschar *bmi_base64_verdict     = NULL;
 467 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 468 int     bmi_deliver            = 1;
 469 int     bmi_run                = 0;
 470 uschar *bmi_verdicts           = NULL;
 471 #endif
 472 int     body_linecount         = 0;
 473 int     body_zerocount         = 0;
 474 uschar *bounce_message_file    = NULL;
 475 uschar *bounce_message_text    = NULL;
 476 uschar *bounce_recipient       = NULL;
 477 BOOL    bounce_return_body     = TRUE;
 478 BOOL    bounce_return_message  = TRUE;
 479 int     bounce_return_size_limit = 100*1024;
 480 uschar *bounce_sender_authentication = NULL;
 481 int     bsmtp_transaction_linecount = 0;
 482
 483 uschar *callout_address        = NULL;
 484 int     callout_cache_domain_positive_expire = 7*24*60*60;
 485 int     callout_cache_domain_negative_expire = 3*60*60;
 486 int     callout_cache_positive_expire = 24*60*60;
 487 int     callout_cache_negative_expire = 2*60*60;
 488 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 489 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 490 int     check_log_inodes       = 0;
 491 int     check_log_space        = 0;
 492 BOOL    check_rfc2047_length   = TRUE;
 493 int     check_spool_inodes     = 0;
 494 int     check_spool_space      = 0;
 495 uschar  *client_authenticator  = NULL;
 496 uschar  *client_authenticated_id = NULL;
 497 uschar  *client_authenticated_sender = NULL;
 498 int     clmacro_count          = 0;
 499 uschar *clmacros[MAX_CLMACROS];
 500 BOOL    config_changed         = FALSE;
 501 FILE   *config_file            = NULL;
 502 uschar *config_filename        = NULL;
 503 int     config_lineno          = 0;
 504 #ifdef CONFIGURE_GROUP
 505 gid_t   config_gid             = CONFIGURE_GROUP;
 506 #endif
 507 uschar *config_main_filelist   = US CONFIGURE_FILE
 508                          "\0<-----------Space to patch configure_filename->";
 509 uschar *config_main_filename   = NULL;
 510 uschar *config_main_directory  = NULL;
 511
 512 #ifdef CONFIGURE_OWNER
 513 uid_t   config_uid             = CONFIGURE_OWNER;
 514 #endif
 515
 516 int     connection_max_messages= -1;
 517 uschar *continue_hostname      = NULL;
 518 uschar *continue_host_address  = NULL;
 519 BOOL    continue_more          = FALSE;
 520 int     continue_sequence      = 1;
 521 uschar *continue_transport     = NULL;
 522
 523 uschar *csa_status             = NULL;
 524 cut_t   cutthrough = {
 525   FALSE,                                /* delivery: when to attempt */
 526   -1,                                   /* fd: open connection */
 527   0,                                    /* nrcpt: number of addresses */
 528 };
 529
 530 BOOL    daemon_listen          = FALSE;
 531 uschar *daemon_smtp_port       = US"smtp";
 532 int     daemon_startup_retries = 9;
 533 int     daemon_startup_sleep   = 30;
 534
 535 #ifdef EXPERIMENTAL_DCC
 536 BOOL    dcc_direct_add_header  = FALSE;
 537 uschar *dcc_header             = NULL;
 538 uschar *dcc_result             = NULL;
 539 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 540 uschar *dccifd_options         = US"header";
 541 #endif
 542
 543 BOOL    debug_daemon           = FALSE;
 544 int     debug_fd               = -1;
 545 FILE   *debug_file             = NULL;
 546 int     debug_notall[]         = {
 547   Di_memory,
 548   -1
 549 };
 550 bit_table debug_options[]      = { /* must be in alphabetical order */
 551   BIT_TABLE(D, acl),
 552   BIT_TABLE(D, all),
 553   BIT_TABLE(D, auth),
 554   BIT_TABLE(D, deliver),
 555   BIT_TABLE(D, dns),
 556   BIT_TABLE(D, dnsbl),
 557   BIT_TABLE(D, exec),
 558   BIT_TABLE(D, expand),
 559   BIT_TABLE(D, filter),
 560   BIT_TABLE(D, hints_lookup),
 561   BIT_TABLE(D, host_lookup),
 562   BIT_TABLE(D, ident),
 563   BIT_TABLE(D, interface),
 564   BIT_TABLE(D, lists),
 565   BIT_TABLE(D, load),
 566   BIT_TABLE(D, local_scan),
 567   BIT_TABLE(D, lookup),
 568   BIT_TABLE(D, memory),
 569   BIT_TABLE(D, pid),
 570   BIT_TABLE(D, process_info),
 571   BIT_TABLE(D, queue_run),
 572   BIT_TABLE(D, receive),
 573   BIT_TABLE(D, resolver),
 574   BIT_TABLE(D, retry),
 575   BIT_TABLE(D, rewrite),
 576   BIT_TABLE(D, route),
 577   BIT_TABLE(D, timestamp),
 578   BIT_TABLE(D, tls),
 579   BIT_TABLE(D, transport),
 580   BIT_TABLE(D, uid),
 581   BIT_TABLE(D, verify),
 582 };
 583 int     debug_options_count    = nelem(debug_options);
 584
 585 unsigned int debug_selector    = 0;
 586 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 587 uschar *delay_warning_condition=
 588   US"${if or {"
 589             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 590             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 591             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 592             "} {no}{yes}}";
 593 BOOL    delivery_date_remove   = TRUE;
 594 uschar *deliver_address_data   = NULL;
 595 int     deliver_datafile       = -1;
 596 const uschar *deliver_domain   = NULL;
 597 uschar *deliver_domain_data    = NULL;
 598 const uschar *deliver_domain_orig = NULL;
 599 const uschar *deliver_domain_parent = NULL;
 600 BOOL    deliver_drop_privilege = FALSE;
 601 BOOL    deliver_firsttime      = FALSE;
 602 BOOL    deliver_force          = FALSE;
 603 BOOL    deliver_freeze         = FALSE;
 604 time_t  deliver_frozen_at      = 0;
 605 uschar *deliver_home           = NULL;
 606 const uschar *deliver_host     = NULL;
 607 const uschar *deliver_host_address = NULL;
 608 int     deliver_host_port      = 0;
 609 uschar *deliver_in_buffer      = NULL;
 610 ino_t   deliver_inode          = 0;
 611 uschar *deliver_localpart      = NULL;
 612 uschar *deliver_localpart_data = NULL;
 613 uschar *deliver_localpart_orig = NULL;
 614 uschar *deliver_localpart_parent = NULL;
 615 uschar *deliver_localpart_prefix = NULL;
 616 uschar *deliver_localpart_suffix = NULL;
 617 BOOL    deliver_force_thaw     = FALSE;
 618 BOOL    deliver_manual_thaw    = FALSE;
 619 uschar *deliver_out_buffer     = NULL;
 620 int     deliver_queue_load_max = -1;
 621 address_item  *deliver_recipients = NULL;
 622 uschar *deliver_selectstring   = NULL;
 623 BOOL    deliver_selectstring_regex = FALSE;
 624 uschar *deliver_selectstring_sender = NULL;
 625 BOOL    deliver_selectstring_sender_regex = FALSE;
 626 #ifdef WITH_OLD_DEMIME
 627 int     demime_errorlevel      = 0;
 628 int     demime_ok              = 0;
 629 uschar *demime_reason          = NULL;
 630 #endif
 631 BOOL    disable_callout_flush  = FALSE;
 632 BOOL    disable_delay_flush    = FALSE;
 633 #ifdef ENABLE_DISABLE_FSYNC
 634 BOOL    disable_fsync          = FALSE;
 635 #endif
 636 BOOL    disable_ipv6           = FALSE;
 637 BOOL    disable_logging        = FALSE;
 638
 639 #ifndef DISABLE_DKIM
 640 BOOL    dkim_collect_input       = FALSE;
 641 uschar *dkim_cur_signer          = NULL;
 642 BOOL    dkim_disable_verify      = FALSE;
 643 int     dkim_key_length          = 0;
 644 uschar *dkim_signers             = NULL;
 645 uschar *dkim_signing_domain      = NULL;
 646 uschar *dkim_signing_selector    = NULL;
 647 uschar *dkim_verify_signers      = US"$dkim_signers";
 648 #endif
 649 #ifdef EXPERIMENTAL_DMARC
 650 BOOL    dmarc_has_been_checked  = FALSE;
 651 uschar *dmarc_ar_header         = NULL;
 652 uschar *dmarc_domain_policy     = NULL;
 653 uschar *dmarc_forensic_sender   = NULL;
 654 uschar *dmarc_history_file      = NULL;
 655 uschar *dmarc_status            = NULL;
 656 uschar *dmarc_status_text       = NULL;
 657 uschar *dmarc_tld_file          = NULL;
 658 uschar *dmarc_used_domain       = NULL;
 659 BOOL    dmarc_disable_verify    = FALSE;
 660 BOOL    dmarc_enable_forensic   = FALSE;
 661 #endif
 662
 663 uschar *dns_again_means_nonexist = NULL;
 664 int     dns_csa_search_limit   = 5;
 665 BOOL    dns_csa_use_reverse    = TRUE;
 666 #ifdef EXPERIMENTAL_DANE
 667 int     dns_dane_ok            = -1;
 668 #endif
 669 uschar *dns_ipv4_lookup        = NULL;
 670 int     dns_retrans            = 0;
 671 int     dns_retry              = 0;
 672 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 673 uschar *dns_trust_aa           = NULL;
 674 int     dns_use_edns0          = -1; /* <0 = not coerced */
 675 uschar *dnslist_domain         = NULL;
 676 uschar *dnslist_matched        = NULL;
 677 uschar *dnslist_text           = NULL;
 678 uschar *dnslist_value          = NULL;
 679 tree_node *domainlist_anchor   = NULL;
 680 int     domainlist_count       = 0;
 681 BOOL    dont_deliver           = FALSE;
 682 BOOL    dot_ends               = TRUE;
 683 BOOL    drop_cr                = FALSE;         /* No longer used */
 684 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 685
 686 BOOL    enable_dollar_recipients = FALSE;
 687 BOOL    envelope_to_remove     = TRUE;
 688 int     errno_quota            = ERRNO_QUOTA;
 689 uschar *errors_copy            = NULL;
 690 int     error_handling         = ERRORS_SENDER;
 691 uschar *errors_reply_to        = NULL;
 692 int     errors_sender_rc       = EXIT_FAILURE;
 693 #ifdef EXPERIMENTAL_EVENT
 694 uschar *event_action             = NULL;        /* expansion for delivery events */
 695 uschar *event_data               = NULL;        /* auxilary data variable for event */
 696 int     event_defer_errno        = 0;
 697 const uschar *event_name         = NULL;        /* event name variable */
 698 #endif
 699
 700
 701 gid_t   exim_gid               = EXIM_GID;
 702 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 703 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 704                         "\0<---------------Space to patch exim_path->";
 705 uid_t   exim_uid               = EXIM_UID;
 706 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 707 int     expand_forbid          = 0;
 708 int     expand_nlength[EXPAND_MAXN+1];
 709 int     expand_nmax            = -1;
 710 uschar *expand_nstring[EXPAND_MAXN+1];
 711 BOOL    expand_string_forcedfail = FALSE;
 712 uschar *expand_string_message;
 713 BOOL    extract_addresses_remove_arguments = TRUE;
 714 uschar *extra_local_interfaces = NULL;
 715
 716 int     fake_response          = OK;
 717 uschar *fake_response_text     = US"Your message has been rejected but is "
 718                                    "being kept for evaluation.\nIf it was a "
 719                                    "legitimate message, it may still be "
 720                                    "delivered to the target recipient(s).";
 721 int     filter_n[FILTER_VARIABLE_COUNT];
 722 BOOL    filter_running         = FALSE;
 723 int     filter_sn[FILTER_VARIABLE_COUNT];
 724 int     filter_test            = FTEST_NONE;
 725 uschar *filter_test_sfile      = NULL;
 726 uschar *filter_test_ufile      = NULL;
 727 uschar *filter_thisaddress     = NULL;
 728 int     finduser_retries       = 0;
 729 #ifdef WITH_OLD_DEMIME
 730 uschar *found_extension        = NULL;
 731 #endif
 732 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 733 uschar *freeze_tell            = NULL;
 734 uschar *freeze_tell_config     = NULL;
 735 uschar *fudged_queue_times     = US"";
 736
 737 uschar *gecos_name             = NULL;
 738 uschar *gecos_pattern          = NULL;
 739 rewrite_rule  *global_rewrite_rules = NULL;
 740
 741 uschar *headers_charset        = US HEADERS_CHARSET;
 742 int     header_insert_maxlen   = 64 * 1024;
 743 header_line  *header_last      = NULL;
 744 header_line  *header_list      = NULL;
 745 int     header_maxsize         = HEADER_MAXSIZE;
 746 int     header_line_maxsize    = 0;
 747
 748 header_name header_names[] = {
 749   { US"bcc",            3, TRUE,  htype_bcc },
 750   { US"cc",             2, TRUE,  htype_cc },
 751   { US"date",           4, TRUE,  htype_date },
 752   { US"delivery-date", 13, FALSE, htype_delivery_date },
 753   { US"envelope-to",   11, FALSE, htype_envelope_to },
 754   { US"from",           4, TRUE,  htype_from },
 755   { US"message-id",    10, TRUE,  htype_id },
 756   { US"received",       8, FALSE, htype_received },
 757   { US"reply-to",       8, FALSE, htype_reply_to },
 758   { US"return-path",   11, FALSE, htype_return_path },
 759   { US"sender",         6, TRUE,  htype_sender },
 760   { US"subject",        7, FALSE, htype_subject },
 761   { US"to",             2, TRUE,  htype_to }
 762 };
 763
 764 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 765
 766 BOOL    header_rewritten       = FALSE;
 767 uschar *helo_accept_junk_hosts = NULL;
 768 uschar *helo_allow_chars       = US"";
 769 uschar *helo_lookup_domains    = US"@ : @[]";
 770 uschar *helo_try_verify_hosts  = NULL;
 771 BOOL    helo_verified          = FALSE;
 772 BOOL    helo_verify_failed     = FALSE;
 773 uschar *helo_verify_hosts      = NULL;
 774 const uschar *hex_digits       = CUS"0123456789abcdef";
 775 uschar *hold_domains           = NULL;
 776 BOOL    host_checking          = FALSE;
 777 BOOL    host_checking_callout  = FALSE;
 778 uschar *host_data              = NULL;
 779 BOOL    host_find_failed_syntax= FALSE;
 780 uschar *host_lookup            = NULL;
 781 BOOL    host_lookup_deferred   = FALSE;
 782 BOOL    host_lookup_failed     = FALSE;
 783 uschar *host_lookup_order      = US"bydns:byaddr";
 784 uschar *host_lookup_msg        = US"";
 785 int     host_number            = 0;
 786 uschar *host_number_string     = NULL;
 787 uschar *host_reject_connection = NULL;
 788 tree_node *hostlist_anchor     = NULL;
 789 int     hostlist_count         = 0;
 790 uschar *hosts_treat_as_local   = NULL;
 791 uschar *hosts_connection_nolog = NULL;
 792
 793 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 794 BOOL    ignore_fromline_local  = FALSE;
 795 uschar *ignore_fromline_hosts  = NULL;
 796 BOOL    inetd_wait_mode        = FALSE;
 797 int     inetd_wait_timeout     = -1;
 798 uschar *interface_address      = NULL;
 799 int     interface_port         = -1;
 800 BOOL    is_inetd               = FALSE;
 801 uschar *iterate_item           = NULL;
 802
 803 int     journal_fd             = -1;
 804
 805 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 806
 807 uschar *eldap_dn               = NULL;
 808 int     load_average           = -2;
 809 BOOL    local_error_message    = FALSE;
 810 BOOL    local_from_check       = TRUE;
 811 uschar *local_from_prefix      = NULL;
 812 uschar *local_from_suffix      = NULL;
 813
 814 #if HAVE_IPV6
 815 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 816 #else
 817 uschar *local_interfaces       = US"0.0.0.0";
 818 #endif
 819
 820 uschar *local_scan_data        = NULL;
 821 int     local_scan_timeout     = 5*60;
 822 BOOL    local_sender_retain    = FALSE;
 823 gid_t   local_user_gid         = (gid_t)(-1);
 824 uid_t   local_user_uid         = (uid_t)(-1);
 825
 826 tree_node *localpartlist_anchor= NULL;
 827 int     localpartlist_count    = 0;
 828 uschar *log_buffer             = NULL;
 829
 830 int     log_default[]          = { /* for initializing log_selector */
 831   Li_acl_warn_skipped,
 832   Li_connection_reject,
 833   Li_delay_delivery,
 834   Li_dnslist_defer,
 835   Li_etrn,
 836   Li_host_lookup_failed,
 837   Li_lost_incoming_connection,
 838   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 839   Li_queue_run,
 840   Li_rejected_header,
 841   Li_retry_defer,
 842   Li_sender_verify_fail,
 843   Li_size_reject,
 844   Li_skip_delivery,
 845   Li_smtp_confirmation,
 846   Li_tls_certificate_verified,
 847   Li_tls_cipher,
 848   -1
 849 };
 850
 851 uschar *log_file_path          = US LOG_FILE_PATH
 852                            "\0<--------------Space to patch log_file_path->";
 853
 854 int     log_notall[]           = {
 855   -1
 856 };
 857 bit_table log_options[]        = { /* must be in alphabetical order */
 858   BIT_TABLE(L, 8bitmime),
 859   BIT_TABLE(L, acl_warn_skipped),
 860   BIT_TABLE(L, address_rewrite),
 861   BIT_TABLE(L, all),
 862   BIT_TABLE(L, all_parents),
 863   BIT_TABLE(L, arguments),
 864   BIT_TABLE(L, connection_reject),
 865   BIT_TABLE(L, delay_delivery),
 866   BIT_TABLE(L, deliver_time),
 867   BIT_TABLE(L, delivery_size),
 868   BIT_TABLE(L, dnslist_defer),
 869   BIT_TABLE(L, etrn),
 870   BIT_TABLE(L, host_lookup_failed),
 871   BIT_TABLE(L, ident_timeout),
 872   BIT_TABLE(L, incoming_interface),
 873   BIT_TABLE(L, incoming_port),
 874   BIT_TABLE(L, lost_incoming_connection),
 875   BIT_TABLE(L, outgoing_interface),
 876   BIT_TABLE(L, outgoing_port),
 877   BIT_TABLE(L, pid),
 878 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 879   BIT_TABLE(L, proxy),
 880 #endif
 881   BIT_TABLE(L, queue_run),
 882   BIT_TABLE(L, queue_time),
 883   BIT_TABLE(L, queue_time_overall),
 884   BIT_TABLE(L, received_recipients),
 885   BIT_TABLE(L, received_sender),
 886   BIT_TABLE(L, rejected_header),
 887   { US"rejected_headers", Li_rejected_header },
 888   BIT_TABLE(L, retry_defer),
 889   BIT_TABLE(L, return_path_on_delivery),
 890   BIT_TABLE(L, sender_on_delivery),
 891   BIT_TABLE(L, sender_verify_fail),
 892   BIT_TABLE(L, size_reject),
 893   BIT_TABLE(L, skip_delivery),
 894   BIT_TABLE(L, smtp_confirmation),
 895   BIT_TABLE(L, smtp_connection),
 896   BIT_TABLE(L, smtp_incomplete_transaction),
 897   BIT_TABLE(L, smtp_mailauth),
 898   BIT_TABLE(L, smtp_no_mail),
 899   BIT_TABLE(L, smtp_protocol_error),
 900   BIT_TABLE(L, smtp_syntax_error),
 901   BIT_TABLE(L, subject),
 902   BIT_TABLE(L, tls_certificate_verified),
 903   BIT_TABLE(L, tls_cipher),
 904   BIT_TABLE(L, tls_peerdn),
 905   BIT_TABLE(L, tls_sni),
 906   BIT_TABLE(L, unknown_in_list),
 907 };
 908 int     log_options_count      = nelem(log_options);
 909
 910 int     log_reject_target      = 0;
 911 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 912 uschar *log_selector_string    = NULL;
 913 FILE   *log_stderr             = NULL;
 914 BOOL    log_testing_mode       = FALSE;
 915 BOOL    log_timezone           = FALSE;
 916 uschar *login_sender_address   = NULL;
 917 uschar *lookup_dnssec_authenticated = NULL;
 918 int     lookup_open_max        = 25;
 919 uschar *lookup_value           = NULL;
 920
 921 macro_item  *macros            = NULL;
 922 uschar *mailstore_basename     = NULL;
 923 #ifdef WITH_CONTENT_SCAN
 924 uschar *malware_name           = NULL;  /* Virus Name */
 925 #endif
 926 int     max_received_linelength= 0;
 927 int     max_username_length    = 0;
 928 int     message_age            = 0;
 929 uschar *message_body           = NULL;
 930 uschar *message_body_end       = NULL;
 931 BOOL    message_body_newlines  = FALSE;
 932 int     message_body_size      = 0;
 933 int     message_body_visible   = 500;
 934 int     message_ended          = END_NOTSTARTED;
 935 uschar *message_headers        = NULL;
 936 uschar *message_id;
 937 uschar *message_id_domain      = NULL;
 938 uschar *message_id_text        = NULL;
 939 struct timeval message_id_tv   = { 0, 0 };
 940 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 941 uschar *message_id_external;
 942 int     message_linecount      = 0;
 943 BOOL    message_logs           = TRUE;
 944 int     message_size           = 0;
 945 uschar *message_size_limit     = US"50M";
 946 #ifdef SUPPORT_I18N
 947 BOOL    message_smtputf8       = FALSE;
 948 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 949 #endif
 950 uschar  message_subdir[2]      = { 0, 0 };
 951 uschar *message_reference      = NULL;
 952
 953 /* MIME ACL expandables */
 954 #ifdef WITH_CONTENT_SCAN
 955 int     mime_anomaly_level     = 0;
 956 const uschar *mime_anomaly_text      = NULL;
 957 uschar *mime_boundary          = NULL;
 958 uschar *mime_charset           = NULL;
 959 uschar *mime_content_description = NULL;
 960 uschar *mime_content_disposition = NULL;
 961 uschar *mime_content_id        = NULL;
 962 unsigned int mime_content_size = 0;
 963 uschar *mime_content_transfer_encoding = NULL;
 964 uschar *mime_content_type      = NULL;
 965 uschar *mime_decoded_filename  = NULL;
 966 uschar *mime_filename          = NULL;
 967 int     mime_is_multipart      = 0;
 968 int     mime_is_coverletter    = 0;
 969 int     mime_is_rfc822         = 0;
 970 int     mime_part_count        = -1;
 971 #endif
 972
 973 BOOL    mua_wrapper            = FALSE;
 974
 975 uid_t  *never_users            = NULL;
 976 #ifdef WITH_CONTENT_SCAN
 977 BOOL    no_mbox_unspool        = FALSE;
 978 #endif
 979 BOOL    no_multiline_responses = FALSE;
 980
 981 uid_t   original_euid;
 982 gid_t   originator_gid;
 983 uschar *originator_login       = NULL;
 984 uschar *originator_name        = NULL;
 985 uid_t   originator_uid;
 986 uschar *override_local_interfaces = NULL;
 987 uschar *override_pid_file_path = NULL;
 988
 989 BOOL    parse_allow_group      = FALSE;
 990 BOOL    parse_found_group      = FALSE;
 991 uschar *percent_hack_domains   = NULL;
 992 uschar *pid_file_path          = US PID_FILE_PATH
 993                            "\0<--------------Space to patch pid_file_path->";
 994 BOOL    pipelining_enable      = TRUE;
 995 uschar *pipelining_advertise_hosts = US"*";
 996 BOOL    preserve_message_logs  = FALSE;
 997 uschar *primary_hostname       = NULL;
 998 BOOL    print_topbitchars      = FALSE;
 999 uschar  process_info[PROCESS_INFO_SIZE];
1000 int     process_info_len       = 0;
1001 uschar *process_log_path       = NULL;
1002 BOOL    prod_requires_admin    = TRUE;
1003
1004 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1005 uschar *hosts_proxy            = US"";
1006 uschar *proxy_external_address = US"";
1007 int     proxy_external_port    = 0;
1008 uschar *proxy_local_address    = US"";
1009 int     proxy_local_port       = 0;
1010 BOOL    proxy_session          = FALSE;
1011 BOOL    proxy_session_failed   = FALSE;
1012 #endif
1013
1014 uschar *prvscheck_address      = NULL;
1015 uschar *prvscheck_keynum       = NULL;
1016 uschar *prvscheck_result       = NULL;
1017
1018
1019 const uschar *qualify_domain_recipient = NULL;
1020 uschar *qualify_domain_sender  = NULL;
1021 BOOL    queue_2stage           = FALSE;
1022 uschar *queue_domains          = NULL;
1023 int     queue_interval         = -1;
1024 BOOL    queue_list_requires_admin = TRUE;
1025 BOOL    queue_only             = FALSE;
1026 uschar *queue_only_file        = NULL;
1027 int     queue_only_load        = -1;
1028 BOOL    queue_only_load_latch  = TRUE;
1029 BOOL    queue_only_override    = TRUE;
1030 BOOL    queue_only_policy      = FALSE;
1031 BOOL    queue_run_first_delivery = FALSE;
1032 BOOL    queue_run_force        = FALSE;
1033 BOOL    queue_run_in_order     = FALSE;
1034 BOOL    queue_run_local        = FALSE;
1035 int     queue_run_max          = 5;
1036 pid_t   queue_run_pid          = (pid_t)0;
1037 int     queue_run_pipe         = -1;
1038 BOOL    queue_running          = FALSE;
1039 BOOL    queue_smtp             = FALSE;
1040 uschar *queue_smtp_domains     = NULL;
1041
1042 unsigned int random_seed       = 0;
1043 tree_node *ratelimiters_cmd    = NULL;
1044 tree_node *ratelimiters_conn   = NULL;
1045 tree_node *ratelimiters_mail   = NULL;
1046 uschar *raw_active_hostname    = NULL;
1047 uschar *raw_sender             = NULL;
1048 uschar **raw_recipients        = NULL;
1049 int     raw_recipients_count   = 0;
1050
1051 int     rcpt_count             = 0;
1052 int     rcpt_fail_count        = 0;
1053 int     rcpt_defer_count       = 0;
1054 gid_t   real_gid;
1055 uid_t   real_uid;
1056 BOOL    really_exim            = TRUE;
1057 BOOL    receive_call_bombout   = FALSE;
1058 int     receive_linecount      = 0;
1059 int     receive_messagecount   = 0;
1060 int     receive_timeout        = 0;
1061 int     received_count         = 0;
1062 uschar *received_for           = NULL;
1063
1064 /*  This is the default text for Received headers generated by Exim. The
1065 date  will be automatically added on the end. */
1066
1067 uschar *received_header_text   = US
1068      "Received: "
1069      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1070      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1071      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1072      "by $primary_hostname "
1073      "${if def:received_protocol {with $received_protocol}} "
1074      #ifdef SUPPORT_TLS
1075      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1076      #endif
1077      "(Exim $version_number)\n\t"
1078      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1079      "id $message_exim_id"
1080      "${if def:received_for {\n\tfor $received_for}}"
1081      "\0<---------------Space to patch received_header_text->";
1082
1083 int     received_headers_max   = 30;
1084 uschar *received_protocol      = NULL;
1085 int     received_time          = 0;
1086 uschar *recipient_data         = NULL;
1087 uschar *recipient_unqualified_hosts = NULL;
1088 uschar *recipient_verify_failure = NULL;
1089 int     recipients_count       = 0;
1090 BOOL    recipients_discarded   = FALSE;
1091 recipient_item  *recipients_list = NULL;
1092 int     recipients_list_max    = 0;
1093 int     recipients_max         = 0;
1094 BOOL    recipients_max_reject  = FALSE;
1095 const pcre *regex_AUTH         = NULL;
1096 const pcre *regex_check_dns_names = NULL;
1097 const pcre *regex_From         = NULL;
1098 const pcre *regex_IGNOREQUOTA  = NULL;
1099 const pcre *regex_PIPELINING   = NULL;
1100 const pcre *regex_SIZE         = NULL;
1101 const pcre *regex_ismsgid      = NULL;
1102 const pcre *regex_smtp_code    = NULL;
1103 uschar *regex_vars[REGEX_VARS];
1104 #ifdef WHITELIST_D_MACROS
1105 const pcre *regex_whitelisted_macro = NULL;
1106 #endif
1107 #ifdef WITH_CONTENT_SCAN
1108 uschar *regex_match_string     = NULL;
1109 #endif
1110 int     remote_delivery_count  = 0;
1111 int     remote_max_parallel    = 2;
1112 uschar *remote_sort_domains    = NULL;
1113 int     retry_data_expire      = 7*24*60*60;
1114 int     retry_interval_max     = 24*60*60;
1115 int     retry_maximum_timeout  = 0;        /* set from retry config */
1116 retry_config  *retries         = NULL;
1117 uschar *return_path            = NULL;
1118 BOOL    return_path_remove     = TRUE;
1119 int     rewrite_existflags     = 0;
1120 uschar *rfc1413_hosts          = US"@[]";
1121 int     rfc1413_query_timeout  = 0;
1122 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1123 uid_t   root_gid               = ROOT_GID;
1124 uid_t   root_uid               = ROOT_UID;
1125
1126 router_instance  *routers  = NULL;
1127 router_instance  router_defaults = {
1128     NULL,                      /* chain pointer */
1129     NULL,                      /* name */
1130     NULL,                      /* info */
1131     NULL,                      /* private options block pointer */
1132     NULL,                      /* driver name */
1133
1134     NULL,                      /* address_data */
1135 #ifdef EXPERIMENTAL_BRIGHTMAIL
1136     NULL,                      /* bmi_rule */
1137 #endif
1138     NULL,                      /* cannot_route_message */
1139     NULL,                      /* condition */
1140     NULL,                      /* current_directory */
1141     NULL,                      /* debug_string */
1142     NULL,                      /* domains */
1143     NULL,                      /* errors_to */
1144     NULL,                      /* expand_gid */
1145     NULL,                      /* expand_uid */
1146     NULL,                      /* expand_more */
1147     NULL,                      /* expand_unseen */
1148     NULL,                      /* extra_headers */
1149     NULL,                      /* fallback_hosts */
1150     NULL,                      /* home_directory */
1151     NULL,                      /* ignore_target_hosts */
1152     NULL,                      /* local_parts */
1153     NULL,                      /* pass_router_name */
1154     NULL,                      /* prefix */
1155     NULL,                      /* redirect_router_name */
1156     NULL,                      /* remove_headers */
1157     NULL,                      /* require_files */
1158     NULL,                      /* router_home_directory */
1159     US"freeze",                /* self */
1160     NULL,                      /* senders */
1161     NULL,                      /* suffix */
1162     NULL,                      /* translate_ip_address */
1163     NULL,                      /* transport_name */
1164
1165     TRUE,                      /* address_test */
1166 #ifdef EXPERIMENTAL_BRIGHTMAIL
1167     FALSE,                     /* bmi_deliver_alternate */
1168     FALSE,                     /* bmi_deliver_default */
1169     FALSE,                     /* bmi_dont_deliver */
1170 #endif
1171     TRUE,                      /* expn */
1172     FALSE,                     /* caseful_local_part */
1173     FALSE,                     /* check_local_user */
1174     FALSE,                     /* disable_logging */
1175     FALSE,                     /* fail_verify_recipient */
1176     FALSE,                     /* fail_verify_sender */
1177     FALSE,                     /* gid_set */
1178     FALSE,                     /* initgroups */
1179     TRUE_UNSET,                /* log_as_local */
1180     TRUE,                      /* more */
1181     FALSE,                     /* pass_on_timeout */
1182     FALSE,                     /* prefix_optional */
1183     TRUE,                      /* repeat_use */
1184     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1185     FALSE,                     /* same_domain_copy_routing */
1186     FALSE,                     /* self_rewrite */
1187     FALSE,                     /* suffix_optional */
1188     FALSE,                     /* verify_only */
1189     TRUE,                      /* verify_recipient */
1190     TRUE,                      /* verify_sender */
1191     FALSE,                     /* uid_set */
1192     FALSE,                     /* unseen */
1193     FALSE,                     /* dsn_lasthop */
1194
1195     self_freeze,               /* self_code */
1196     (uid_t)(-1),               /* uid */
1197     (gid_t)(-1),               /* gid */
1198
1199     NULL,                      /* fallback_hostlist */
1200     NULL,                      /* transport instance */
1201     NULL,                      /* pass_router */
1202     NULL,                      /* redirect_router */
1203
1204     { NULL, NULL },            /* dnssec_domains {require,request} */
1205 };
1206
1207 uschar *router_name            = NULL;
1208
1209 ip_address_item *running_interfaces = NULL;
1210 BOOL    running_in_test_harness = FALSE;
1211
1212 /* This is a weird one. The following string gets patched in the binary by the
1213 script that sets up a copy of Exim for running in the test harness. It seems
1214 that compilers are now clever, and share constant strings if they can.
1215 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1216 make use of the end of this string in order to save space. So the patching then
1217 wrecks this. We defeat this optimization by adding some additional characters
1218 onto the end of the string. */
1219
1220 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1221
1222 int     runrc                  = 0;
1223
1224 uschar *search_error_message   = NULL;
1225 BOOL    search_find_defer      = FALSE;
1226 uschar *self_hostname          = NULL;
1227 uschar *sender_address         = NULL;
1228 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1229 uschar *sender_address_data    = NULL;
1230 BOOL    sender_address_forced  = FALSE;
1231 uschar *sender_address_unrewritten = NULL;
1232 uschar *sender_data            = NULL;
1233 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1234 uschar *sender_fullhost        = NULL;
1235 BOOL    sender_helo_dnssec     = FALSE;
1236 uschar *sender_helo_name       = NULL;
1237 uschar **sender_host_aliases   = &no_aliases;
1238 uschar *sender_host_address    = NULL;
1239 uschar *sender_host_authenticated = NULL;
1240 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1241 BOOL    sender_host_dnssec     = FALSE;
1242 uschar *sender_host_name       = NULL;
1243 int     sender_host_port       = 0;
1244 BOOL    sender_host_notsocket  = FALSE;
1245 BOOL    sender_host_unknown    = FALSE;
1246 uschar *sender_ident           = NULL;
1247 BOOL    sender_local           = FALSE;
1248 BOOL    sender_name_forced     = FALSE;
1249 uschar *sender_rate            = NULL;
1250 uschar *sender_rate_limit      = NULL;
1251 uschar *sender_rate_period     = NULL;
1252 uschar *sender_rcvhost         = NULL;
1253 BOOL    sender_set_untrusted   = FALSE;
1254 uschar *sender_unqualified_hosts = NULL;
1255 uschar *sender_verify_failure = NULL;
1256 address_item *sender_verified_list  = NULL;
1257 address_item *sender_verified_failed = NULL;
1258 int     sender_verified_rc     = -1;
1259 BOOL    sender_verified_responded = FALSE;
1260 uschar *sending_ip_address     = NULL;
1261 int     sending_port           = -1;
1262 SIGNAL_BOOL sigalrm_seen       = FALSE;
1263 uschar **sighup_argv           = NULL;
1264 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1265 int     smtp_accept_count      = 0;
1266 BOOL    smtp_accept_keepalive  = TRUE;
1267 int     smtp_accept_max        = 20;
1268 int     smtp_accept_max_nonmail= 10;
1269 uschar *smtp_accept_max_nonmail_hosts = US"*";
1270 int     smtp_accept_max_per_connection = 1000;
1271 uschar *smtp_accept_max_per_host = NULL;
1272 int     smtp_accept_queue      = 0;
1273 int     smtp_accept_queue_per_connection = 10;
1274 int     smtp_accept_reserve    = 0;
1275 uschar *smtp_active_hostname   = NULL;
1276 BOOL    smtp_authenticated     = FALSE;
1277 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1278                              "Exim $version_number $tod_full"
1279                              "\0<---------------Space to patch smtp_banner->";
1280 BOOL    smtp_batched_input     = FALSE;
1281 BOOL    smtp_check_spool_space = TRUE;
1282 int     smtp_ch_index          = 0;
1283 uschar *smtp_cmd_argument      = NULL;
1284 uschar *smtp_cmd_buffer        = NULL;
1285 time_t  smtp_connection_start  = 0;
1286 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1287 int     smtp_connect_backlog   = 20;
1288 double  smtp_delay_mail        = 0.0;
1289 double  smtp_delay_rcpt        = 0.0;
1290 BOOL    smtp_enforce_sync      = TRUE;
1291 FILE   *smtp_in                = NULL;
1292 BOOL    smtp_input             = FALSE;
1293 int     smtp_load_reserve      = -1;
1294 int     smtp_mailcmd_count     = 0;
1295 FILE   *smtp_out               = NULL;
1296 uschar *smtp_etrn_command      = NULL;
1297 BOOL    smtp_etrn_serialize    = TRUE;
1298 int     smtp_max_synprot_errors= 3;
1299 int     smtp_max_unknown_commands = 3;
1300 uschar *smtp_notquit_reason    = NULL;
1301 uschar *smtp_ratelimit_hosts   = NULL;
1302 uschar *smtp_ratelimit_mail    = NULL;
1303 uschar *smtp_ratelimit_rcpt    = NULL;
1304 uschar *smtp_read_error        = US"";
1305 int     smtp_receive_timeout   = 5*60;
1306 uschar *smtp_receive_timeout_s = NULL;
1307 uschar *smtp_reserve_hosts     = NULL;
1308 BOOL    smtp_return_error_details = FALSE;
1309 int     smtp_rlm_base          = 0;
1310 double  smtp_rlm_factor        = 0.0;
1311 int     smtp_rlm_limit         = 0;
1312 int     smtp_rlm_threshold     = INT_MAX;
1313 int     smtp_rlr_base          = 0;
1314 double  smtp_rlr_factor        = 0.0;
1315 int     smtp_rlr_limit         = 0;
1316 int     smtp_rlr_threshold     = INT_MAX;
1317 BOOL    smtp_use_pipelining    = FALSE;
1318 BOOL    smtp_use_size          = FALSE;
1319 #ifdef SUPPORT_I18N
1320 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1321 #endif
1322
1323 #ifdef WITH_CONTENT_SCAN
1324 uschar *spamd_address          = US"127.0.0.1 783";
1325 uschar *spam_bar               = NULL;
1326 uschar *spam_report            = NULL;
1327 uschar *spam_action            = NULL;
1328 uschar *spam_score             = NULL;
1329 uschar *spam_score_int         = NULL;
1330 #endif
1331 #ifdef EXPERIMENTAL_SPF
1332 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1333 uschar *spf_header_comment     = NULL;
1334 uschar *spf_received           = NULL;
1335 uschar *spf_result             = NULL;
1336 uschar *spf_smtp_comment       = NULL;
1337 #endif
1338
1339 BOOL    split_spool_directory  = FALSE;
1340 uschar *spool_directory        = US SPOOL_DIRECTORY
1341                            "\0<--------------Space to patch spool_directory->";
1342 #ifdef EXPERIMENTAL_SRS
1343 uschar *srs_config             = NULL;
1344 uschar *srs_db_address         = NULL;
1345 uschar *srs_db_key             = NULL;
1346 int     srs_hashlength         = 6;
1347 int     srs_hashmin            = -1;
1348 int     srs_maxage             = 31;
1349 uschar *srs_orig_recipient     = NULL;
1350 uschar *srs_orig_sender        = NULL;
1351 uschar *srs_recipient          = NULL;
1352 uschar *srs_secrets            = NULL;
1353 uschar *srs_status             = NULL;
1354 BOOL    srs_usehash            = TRUE;
1355 BOOL    srs_usetimestamp       = TRUE;
1356 #endif
1357 BOOL    strict_acl_vars        = FALSE;
1358 int     string_datestamp_offset= -1;
1359 int     string_datestamp_length= 0;
1360 int     string_datestamp_type  = -1;
1361 BOOL    strip_excess_angle_brackets = FALSE;
1362 BOOL    strip_trailing_dot     = FALSE;
1363 uschar *submission_domain      = NULL;
1364 BOOL    submission_mode        = FALSE;
1365 uschar *submission_name        = NULL;
1366 BOOL    suppress_local_fixups  = FALSE;
1367 BOOL    suppress_local_fixups_default = FALSE;
1368 BOOL    synchronous_delivery   = FALSE;
1369 BOOL    syslog_duplication     = TRUE;
1370 int     syslog_facility        = LOG_MAIL;
1371 uschar *syslog_processname     = US"exim";
1372 BOOL    syslog_timestamp       = TRUE;
1373 uschar *system_filter          = NULL;
1374
1375 uschar *system_filter_directory_transport = NULL;
1376 uschar *system_filter_file_transport = NULL;
1377 uschar *system_filter_pipe_transport = NULL;
1378 uschar *system_filter_reply_transport = NULL;
1379
1380 gid_t   system_filter_gid      = 0;
1381 BOOL    system_filter_gid_set  = FALSE;
1382 uid_t   system_filter_uid      = (uid_t)-1;
1383 BOOL    system_filter_uid_set  = FALSE;
1384 BOOL    system_filtering       = FALSE;
1385
1386 BOOL    tcp_nodelay            = TRUE;
1387 #ifdef USE_TCP_WRAPPERS
1388 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1389 #endif
1390 int     test_harness_load_avg  = 0;
1391 int     thismessage_size_limit = 0;
1392 int     timeout_frozen_after   = 0;
1393 BOOL    timestamps_utc         = FALSE;
1394
1395 transport_instance  *transports = NULL;
1396
1397 transport_instance  transport_defaults = {
1398     NULL,                     /* chain pointer */
1399     NULL,                     /* name */
1400     NULL,                     /* info */
1401     NULL,                     /* private options block pointer */
1402     NULL,                     /* driver name */
1403     NULL,                     /* setup entry point */
1404     1,                        /* batch_max */
1405     NULL,                     /* batch_id */
1406     NULL,                     /* home_dir */
1407     NULL,                     /* current_dir */
1408     NULL,                     /* expand-multi-domain */
1409     TRUE,                     /* multi-domain */
1410     FALSE,                    /* overrides_hosts */
1411     100,                      /* max_addresses */
1412     500,                      /* connection_max_messages */
1413     FALSE,                    /* deliver_as_creator */
1414     FALSE,                    /* disable_logging */
1415     FALSE,                    /* initgroups */
1416     FALSE,                    /* uid_set */
1417     FALSE,                    /* gid_set */
1418     (uid_t)(-1),              /* uid */
1419     (gid_t)(-1),              /* gid */
1420     NULL,                     /* expand_uid */
1421     NULL,                     /* expand_gid */
1422     NULL,                     /* warn_message */
1423     NULL,                     /* shadow */
1424     NULL,                     /* shadow_condition */
1425     NULL,                     /* filter_command */
1426     NULL,                     /* add_headers */
1427     NULL,                     /* remove_headers */
1428     NULL,                     /* return_path */
1429     NULL,                     /* debug_string */
1430     NULL,                     /* max_parallel */
1431     NULL,                     /* message_size_limit */
1432     NULL,                     /* headers_rewrite */
1433     NULL,                     /* rewrite_rules */
1434     0,                        /* rewrite_existflags */
1435     300,                      /* filter_timeout */
1436     FALSE,                    /* body_only */
1437     FALSE,                    /* delivery_date_add */
1438     FALSE,                    /* envelope_to_add */
1439     FALSE,                    /* headers_only */
1440     FALSE,                    /* rcpt_include_affixes */
1441     FALSE,                    /* return_path_add */
1442     FALSE,                    /* return_output */
1443     FALSE,                    /* return_fail_output */
1444     FALSE,                    /* log_output */
1445     FALSE,                    /* log_fail_output */
1446     FALSE,                    /* log_defer_output */
1447     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1448                                  1 nor 0 so can detect unset */
1449 #ifdef EXPERIMENTAL_EVENT
1450    ,NULL                      /* event_action */
1451 #endif
1452 };
1453
1454 int     transport_count;
1455 uschar *transport_name          = NULL;
1456 int     transport_newlines;
1457 const uschar **transport_filter_argv  = NULL;
1458 int     transport_filter_timeout;
1459 BOOL    transport_filter_timed_out = FALSE;
1460 int     transport_write_timeout= 0;
1461
1462 tree_node  *tree_dns_fails     = NULL;
1463 tree_node  *tree_duplicates    = NULL;
1464 tree_node  *tree_nonrecipients = NULL;
1465 tree_node  *tree_unusable      = NULL;
1466
1467 BOOL    trusted_caller         = FALSE;
1468 BOOL    trusted_config         = TRUE;
1469 gid_t  *trusted_groups         = NULL;
1470 uid_t  *trusted_users          = NULL;
1471 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1472
1473 uschar *unknown_login          = NULL;
1474 uschar *unknown_username       = NULL;
1475 uschar *untrusted_set_sender   = NULL;
1476
1477 /*  A regex for matching a "From_" line in an incoming message, in the form
1478
1479     From ph10 Fri Jan  5 12:35 GMT 1996
1480
1481 which  the "mail" commands send to the MTA (undocumented, of course), or in
1482 the  form
1483
1484     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1485
1486 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1487 Because  of variations in time formats, just match up to the minutes. That
1488 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1489 so  just require one digit for hours and minutes. The weekday is also absent
1490 in  some forms. */
1491
1492 uschar *uucp_from_pattern      = US
1493    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1494    "(?:"                                          /* Non-extracting bracket */
1495    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1496    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1497    ")"                                            /* End alternation */
1498    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1499
1500 uschar *uucp_from_sender       = US"$1";
1501
1502 uschar *verify_mode            = NULL;
1503 uschar *version_copyright      =
1504  US"Copyright (c) University of Cambridge, 1995 - 2015\n"
1505    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2015";
1506 uschar *version_date           = US"?";
1507 uschar *version_cnumber        = US"????";
1508 uschar *version_string         = US"?";
1509
1510 uschar *warn_message_file      = NULL;
1511 int     warning_count          = 0;
1512 uschar *warnmsg_delay          = NULL;
1513 uschar *warnmsg_recipients     = NULL;
1514 BOOL    write_rejectlog        = TRUE;
1515
1516
1517 /*  End of globals.c */