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 LOOKUP_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 int     bounce_return_linesize_limit = 998;
 479 BOOL    bounce_return_message  = TRUE;
 480 int     bounce_return_size_limit = 100*1024;
 481 uschar *bounce_sender_authentication = NULL;
 482 int     bsmtp_transaction_linecount = 0;
 483
 484 uschar *callout_address        = NULL;
 485 int     callout_cache_domain_positive_expire = 7*24*60*60;
 486 int     callout_cache_domain_negative_expire = 3*60*60;
 487 int     callout_cache_positive_expire = 24*60*60;
 488 int     callout_cache_negative_expire = 2*60*60;
 489 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 490 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 491 int     check_log_inodes       = 0;
 492 int     check_log_space        = 0;
 493 BOOL    check_rfc2047_length   = TRUE;
 494 int     check_spool_inodes     = 0;
 495 int     check_spool_space      = 0;
 496 uschar  *client_authenticator  = NULL;
 497 uschar  *client_authenticated_id = NULL;
 498 uschar  *client_authenticated_sender = NULL;
 499 int     clmacro_count          = 0;
 500 uschar *clmacros[MAX_CLMACROS];
 501 BOOL    config_changed         = FALSE;
 502 FILE   *config_file            = NULL;
 503 uschar *config_filename        = NULL;
 504 int     config_lineno          = 0;
 505 #ifdef CONFIGURE_GROUP
 506 gid_t   config_gid             = CONFIGURE_GROUP;
 507 #endif
 508 uschar *config_main_filelist   = US CONFIGURE_FILE
 509                          "\0<-----------Space to patch configure_filename->";
 510 uschar *config_main_filename   = NULL;
 511 uschar *config_main_directory  = NULL;
 512
 513 #ifdef CONFIGURE_OWNER
 514 uid_t   config_uid             = CONFIGURE_OWNER;
 515 #endif
 516
 517 int     connection_max_messages= -1;
 518 uschar *continue_hostname      = NULL;
 519 uschar *continue_host_address  = NULL;
 520 BOOL    continue_more          = FALSE;
 521 int     continue_sequence      = 1;
 522 uschar *continue_transport     = NULL;
 523
 524 uschar *csa_status             = NULL;
 525 cut_t   cutthrough = {
 526   FALSE,                                /* delivery: when to attempt */
 527   -1,                                   /* fd: open connection */
 528   0,                                    /* nrcpt: number of addresses */
 529 };
 530
 531 BOOL    daemon_listen          = FALSE;
 532 uschar *daemon_smtp_port       = US"smtp";
 533 int     daemon_startup_retries = 9;
 534 int     daemon_startup_sleep   = 30;
 535
 536 #ifdef EXPERIMENTAL_DCC
 537 BOOL    dcc_direct_add_header  = FALSE;
 538 uschar *dcc_header             = NULL;
 539 uschar *dcc_result             = NULL;
 540 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 541 uschar *dccifd_options         = US"header";
 542 #endif
 543
 544 BOOL    debug_daemon           = FALSE;
 545 int     debug_fd               = -1;
 546 FILE   *debug_file             = NULL;
 547 int     debug_notall[]         = {
 548   Di_memory,
 549   -1
 550 };
 551 bit_table debug_options[]      = { /* must be in alphabetical order */
 552   BIT_TABLE(D, acl),
 553   BIT_TABLE(D, all),
 554   BIT_TABLE(D, auth),
 555   BIT_TABLE(D, deliver),
 556   BIT_TABLE(D, dns),
 557   BIT_TABLE(D, dnsbl),
 558   BIT_TABLE(D, exec),
 559   BIT_TABLE(D, expand),
 560   BIT_TABLE(D, filter),
 561   BIT_TABLE(D, hints_lookup),
 562   BIT_TABLE(D, host_lookup),
 563   BIT_TABLE(D, ident),
 564   BIT_TABLE(D, interface),
 565   BIT_TABLE(D, lists),
 566   BIT_TABLE(D, load),
 567   BIT_TABLE(D, local_scan),
 568   BIT_TABLE(D, lookup),
 569   BIT_TABLE(D, memory),
 570   BIT_TABLE(D, pid),
 571   BIT_TABLE(D, process_info),
 572   BIT_TABLE(D, queue_run),
 573   BIT_TABLE(D, receive),
 574   BIT_TABLE(D, resolver),
 575   BIT_TABLE(D, retry),
 576   BIT_TABLE(D, rewrite),
 577   BIT_TABLE(D, route),
 578   BIT_TABLE(D, timestamp),
 579   BIT_TABLE(D, tls),
 580   BIT_TABLE(D, transport),
 581   BIT_TABLE(D, uid),
 582   BIT_TABLE(D, verify),
 583 };
 584 int     debug_options_count    = nelem(debug_options);
 585
 586 unsigned int debug_selector    = 0;
 587 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 588 uschar *delay_warning_condition=
 589   US"${if or {"
 590             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 591             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 592             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 593             "} {no}{yes}}";
 594 BOOL    delivery_date_remove   = TRUE;
 595 uschar *deliver_address_data   = NULL;
 596 int     deliver_datafile       = -1;
 597 const uschar *deliver_domain   = NULL;
 598 uschar *deliver_domain_data    = NULL;
 599 const uschar *deliver_domain_orig = NULL;
 600 const uschar *deliver_domain_parent = NULL;
 601 BOOL    deliver_drop_privilege = FALSE;
 602 BOOL    deliver_firsttime      = FALSE;
 603 BOOL    deliver_force          = FALSE;
 604 BOOL    deliver_freeze         = FALSE;
 605 time_t  deliver_frozen_at      = 0;
 606 uschar *deliver_home           = NULL;
 607 const uschar *deliver_host     = NULL;
 608 const uschar *deliver_host_address = NULL;
 609 int     deliver_host_port      = 0;
 610 uschar *deliver_in_buffer      = NULL;
 611 ino_t   deliver_inode          = 0;
 612 uschar *deliver_localpart      = NULL;
 613 uschar *deliver_localpart_data = NULL;
 614 uschar *deliver_localpart_orig = NULL;
 615 uschar *deliver_localpart_parent = NULL;
 616 uschar *deliver_localpart_prefix = NULL;
 617 uschar *deliver_localpart_suffix = NULL;
 618 BOOL    deliver_force_thaw     = FALSE;
 619 BOOL    deliver_manual_thaw    = FALSE;
 620 uschar *deliver_out_buffer     = NULL;
 621 int     deliver_queue_load_max = -1;
 622 address_item  *deliver_recipients = NULL;
 623 uschar *deliver_selectstring   = NULL;
 624 BOOL    deliver_selectstring_regex = FALSE;
 625 uschar *deliver_selectstring_sender = NULL;
 626 BOOL    deliver_selectstring_sender_regex = FALSE;
 627 #ifdef WITH_OLD_DEMIME
 628 int     demime_errorlevel      = 0;
 629 int     demime_ok              = 0;
 630 uschar *demime_reason          = NULL;
 631 #endif
 632 BOOL    disable_callout_flush  = FALSE;
 633 BOOL    disable_delay_flush    = FALSE;
 634 #ifdef ENABLE_DISABLE_FSYNC
 635 BOOL    disable_fsync          = FALSE;
 636 #endif
 637 BOOL    disable_ipv6           = FALSE;
 638 BOOL    disable_logging        = FALSE;
 639
 640 #ifndef DISABLE_DKIM
 641 BOOL    dkim_collect_input       = FALSE;
 642 uschar *dkim_cur_signer          = NULL;
 643 BOOL    dkim_disable_verify      = FALSE;
 644 int     dkim_key_length          = 0;
 645 uschar *dkim_signers             = NULL;
 646 uschar *dkim_signing_domain      = NULL;
 647 uschar *dkim_signing_selector    = NULL;
 648 uschar *dkim_verify_signers      = US"$dkim_signers";
 649 #endif
 650 #ifdef EXPERIMENTAL_DMARC
 651 BOOL    dmarc_has_been_checked  = FALSE;
 652 uschar *dmarc_ar_header         = NULL;
 653 uschar *dmarc_domain_policy     = NULL;
 654 uschar *dmarc_forensic_sender   = NULL;
 655 uschar *dmarc_history_file      = NULL;
 656 uschar *dmarc_status            = NULL;
 657 uschar *dmarc_status_text       = NULL;
 658 uschar *dmarc_tld_file          = NULL;
 659 uschar *dmarc_used_domain       = NULL;
 660 BOOL    dmarc_disable_verify    = FALSE;
 661 BOOL    dmarc_enable_forensic   = FALSE;
 662 #endif
 663
 664 uschar *dns_again_means_nonexist = NULL;
 665 int     dns_csa_search_limit   = 5;
 666 BOOL    dns_csa_use_reverse    = TRUE;
 667 #ifdef EXPERIMENTAL_DANE
 668 int     dns_dane_ok            = -1;
 669 #endif
 670 uschar *dns_ipv4_lookup        = NULL;
 671 int     dns_retrans            = 0;
 672 int     dns_retry              = 0;
 673 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 674 uschar *dns_trust_aa           = NULL;
 675 int     dns_use_edns0          = -1; /* <0 = not coerced */
 676 uschar *dnslist_domain         = NULL;
 677 uschar *dnslist_matched        = NULL;
 678 uschar *dnslist_text           = NULL;
 679 uschar *dnslist_value          = NULL;
 680 tree_node *domainlist_anchor   = NULL;
 681 int     domainlist_count       = 0;
 682 BOOL    dont_deliver           = FALSE;
 683 BOOL    dot_ends               = TRUE;
 684 BOOL    drop_cr                = FALSE;         /* No longer used */
 685 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 686
 687 BOOL    enable_dollar_recipients = FALSE;
 688 BOOL    envelope_to_remove     = TRUE;
 689 int     errno_quota            = ERRNO_QUOTA;
 690 uschar *errors_copy            = NULL;
 691 int     error_handling         = ERRORS_SENDER;
 692 uschar *errors_reply_to        = NULL;
 693 int     errors_sender_rc       = EXIT_FAILURE;
 694 #ifndef DISABLE_EVENT
 695 uschar *event_action             = NULL;        /* expansion for delivery events */
 696 uschar *event_data               = NULL;        /* auxilary data variable for event */
 697 int     event_defer_errno        = 0;
 698 const uschar *event_name         = NULL;        /* event name variable */
 699 #endif
 700
 701
 702 gid_t   exim_gid               = EXIM_GID;
 703 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 704 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 705                         "\0<---------------Space to patch exim_path->";
 706 uid_t   exim_uid               = EXIM_UID;
 707 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 708 int     expand_forbid          = 0;
 709 int     expand_nlength[EXPAND_MAXN+1];
 710 int     expand_nmax            = -1;
 711 uschar *expand_nstring[EXPAND_MAXN+1];
 712 BOOL    expand_string_forcedfail = FALSE;
 713 uschar *expand_string_message;
 714 BOOL    extract_addresses_remove_arguments = TRUE;
 715 uschar *extra_local_interfaces = NULL;
 716
 717 int     fake_response          = OK;
 718 uschar *fake_response_text     = US"Your message has been rejected but is "
 719                                    "being kept for evaluation.\nIf it was a "
 720                                    "legitimate message, it may still be "
 721                                    "delivered to the target recipient(s).";
 722 int     filter_n[FILTER_VARIABLE_COUNT];
 723 BOOL    filter_running         = FALSE;
 724 int     filter_sn[FILTER_VARIABLE_COUNT];
 725 int     filter_test            = FTEST_NONE;
 726 uschar *filter_test_sfile      = NULL;
 727 uschar *filter_test_ufile      = NULL;
 728 uschar *filter_thisaddress     = NULL;
 729 int     finduser_retries       = 0;
 730 #ifdef WITH_OLD_DEMIME
 731 uschar *found_extension        = NULL;
 732 #endif
 733 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 734 uschar *freeze_tell            = NULL;
 735 uschar *freeze_tell_config     = NULL;
 736 uschar *fudged_queue_times     = US"";
 737
 738 uschar *gecos_name             = NULL;
 739 uschar *gecos_pattern          = NULL;
 740 rewrite_rule  *global_rewrite_rules = NULL;
 741
 742 uschar *headers_charset        = US HEADERS_CHARSET;
 743 int     header_insert_maxlen   = 64 * 1024;
 744 header_line  *header_last      = NULL;
 745 header_line  *header_list      = NULL;
 746 int     header_maxsize         = HEADER_MAXSIZE;
 747 int     header_line_maxsize    = 0;
 748
 749 header_name header_names[] = {
 750   { US"bcc",            3, TRUE,  htype_bcc },
 751   { US"cc",             2, TRUE,  htype_cc },
 752   { US"date",           4, TRUE,  htype_date },
 753   { US"delivery-date", 13, FALSE, htype_delivery_date },
 754   { US"envelope-to",   11, FALSE, htype_envelope_to },
 755   { US"from",           4, TRUE,  htype_from },
 756   { US"message-id",    10, TRUE,  htype_id },
 757   { US"received",       8, FALSE, htype_received },
 758   { US"reply-to",       8, FALSE, htype_reply_to },
 759   { US"return-path",   11, FALSE, htype_return_path },
 760   { US"sender",         6, TRUE,  htype_sender },
 761   { US"subject",        7, FALSE, htype_subject },
 762   { US"to",             2, TRUE,  htype_to }
 763 };
 764
 765 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 766
 767 BOOL    header_rewritten       = FALSE;
 768 uschar *helo_accept_junk_hosts = NULL;
 769 uschar *helo_allow_chars       = US"";
 770 uschar *helo_lookup_domains    = US"@ : @[]";
 771 uschar *helo_try_verify_hosts  = NULL;
 772 BOOL    helo_verified          = FALSE;
 773 BOOL    helo_verify_failed     = FALSE;
 774 uschar *helo_verify_hosts      = NULL;
 775 const uschar *hex_digits       = CUS"0123456789abcdef";
 776 uschar *hold_domains           = NULL;
 777 BOOL    host_checking          = FALSE;
 778 BOOL    host_checking_callout  = FALSE;
 779 uschar *host_data              = NULL;
 780 BOOL    host_find_failed_syntax= FALSE;
 781 uschar *host_lookup            = NULL;
 782 BOOL    host_lookup_deferred   = FALSE;
 783 BOOL    host_lookup_failed     = FALSE;
 784 uschar *host_lookup_order      = US"bydns:byaddr";
 785 uschar *host_lookup_msg        = US"";
 786 int     host_number            = 0;
 787 uschar *host_number_string     = NULL;
 788 uschar *host_reject_connection = NULL;
 789 tree_node *hostlist_anchor     = NULL;
 790 int     hostlist_count         = 0;
 791 uschar *hosts_treat_as_local   = NULL;
 792 uschar *hosts_connection_nolog = NULL;
 793
 794 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 795 BOOL    ignore_fromline_local  = FALSE;
 796 uschar *ignore_fromline_hosts  = NULL;
 797 BOOL    inetd_wait_mode        = FALSE;
 798 int     inetd_wait_timeout     = -1;
 799 uschar *interface_address      = NULL;
 800 int     interface_port         = -1;
 801 BOOL    is_inetd               = FALSE;
 802 uschar *iterate_item           = NULL;
 803
 804 int     journal_fd             = -1;
 805
 806 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 807
 808 uschar *eldap_dn               = NULL;
 809 int     load_average           = -2;
 810 BOOL    local_error_message    = FALSE;
 811 BOOL    local_from_check       = TRUE;
 812 uschar *local_from_prefix      = NULL;
 813 uschar *local_from_suffix      = NULL;
 814
 815 #if HAVE_IPV6
 816 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 817 #else
 818 uschar *local_interfaces       = US"0.0.0.0";
 819 #endif
 820
 821 uschar *local_scan_data        = NULL;
 822 int     local_scan_timeout     = 5*60;
 823 BOOL    local_sender_retain    = FALSE;
 824 gid_t   local_user_gid         = (gid_t)(-1);
 825 uid_t   local_user_uid         = (uid_t)(-1);
 826
 827 tree_node *localpartlist_anchor= NULL;
 828 int     localpartlist_count    = 0;
 829 uschar *log_buffer             = NULL;
 830
 831 int     log_default[]          = { /* for initializing log_selector */
 832   Li_acl_warn_skipped,
 833   Li_connection_reject,
 834   Li_delay_delivery,
 835   Li_dnslist_defer,
 836   Li_etrn,
 837   Li_host_lookup_failed,
 838   Li_lost_incoming_connection,
 839   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 840   Li_queue_run,
 841   Li_rejected_header,
 842   Li_retry_defer,
 843   Li_sender_verify_fail,
 844   Li_size_reject,
 845   Li_skip_delivery,
 846   Li_smtp_confirmation,
 847   Li_tls_certificate_verified,
 848   Li_tls_cipher,
 849   -1
 850 };
 851
 852 uschar *log_file_path          = US LOG_FILE_PATH
 853                            "\0<--------------Space to patch log_file_path->";
 854
 855 int     log_notall[]           = {
 856   -1
 857 };
 858 bit_table log_options[]        = { /* must be in alphabetical order */
 859   BIT_TABLE(L, 8bitmime),
 860   BIT_TABLE(L, acl_warn_skipped),
 861   BIT_TABLE(L, address_rewrite),
 862   BIT_TABLE(L, all),
 863   BIT_TABLE(L, all_parents),
 864   BIT_TABLE(L, arguments),
 865   BIT_TABLE(L, connection_reject),
 866   BIT_TABLE(L, delay_delivery),
 867   BIT_TABLE(L, deliver_time),
 868   BIT_TABLE(L, delivery_size),
 869   BIT_TABLE(L, dnslist_defer),
 870   BIT_TABLE(L, etrn),
 871   BIT_TABLE(L, host_lookup_failed),
 872   BIT_TABLE(L, ident_timeout),
 873   BIT_TABLE(L, incoming_interface),
 874   BIT_TABLE(L, incoming_port),
 875   BIT_TABLE(L, lost_incoming_connection),
 876   BIT_TABLE(L, outgoing_interface),
 877   BIT_TABLE(L, outgoing_port),
 878   BIT_TABLE(L, pid),
 879 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 880   BIT_TABLE(L, proxy),
 881 #endif
 882   BIT_TABLE(L, queue_run),
 883   BIT_TABLE(L, queue_time),
 884   BIT_TABLE(L, queue_time_overall),
 885   BIT_TABLE(L, received_recipients),
 886   BIT_TABLE(L, received_sender),
 887   BIT_TABLE(L, rejected_header),
 888   { US"rejected_headers", Li_rejected_header },
 889   BIT_TABLE(L, retry_defer),
 890   BIT_TABLE(L, return_path_on_delivery),
 891   BIT_TABLE(L, sender_on_delivery),
 892   BIT_TABLE(L, sender_verify_fail),
 893   BIT_TABLE(L, size_reject),
 894   BIT_TABLE(L, skip_delivery),
 895   BIT_TABLE(L, smtp_confirmation),
 896   BIT_TABLE(L, smtp_connection),
 897   BIT_TABLE(L, smtp_incomplete_transaction),
 898   BIT_TABLE(L, smtp_mailauth),
 899   BIT_TABLE(L, smtp_no_mail),
 900   BIT_TABLE(L, smtp_protocol_error),
 901   BIT_TABLE(L, smtp_syntax_error),
 902   BIT_TABLE(L, subject),
 903   BIT_TABLE(L, tls_certificate_verified),
 904   BIT_TABLE(L, tls_cipher),
 905   BIT_TABLE(L, tls_peerdn),
 906   BIT_TABLE(L, tls_sni),
 907   BIT_TABLE(L, unknown_in_list),
 908 };
 909 int     log_options_count      = nelem(log_options);
 910
 911 int     log_reject_target      = 0;
 912 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 913 uschar *log_selector_string    = NULL;
 914 FILE   *log_stderr             = NULL;
 915 BOOL    log_testing_mode       = FALSE;
 916 BOOL    log_timezone           = FALSE;
 917 uschar *login_sender_address   = NULL;
 918 uschar *lookup_dnssec_authenticated = NULL;
 919 int     lookup_open_max        = 25;
 920 uschar *lookup_value           = NULL;
 921
 922 macro_item  *macros            = NULL;
 923 uschar *mailstore_basename     = NULL;
 924 #ifdef WITH_CONTENT_SCAN
 925 uschar *malware_name           = NULL;  /* Virus Name */
 926 #endif
 927 int     max_received_linelength= 0;
 928 int     max_username_length    = 0;
 929 int     message_age            = 0;
 930 uschar *message_body           = NULL;
 931 uschar *message_body_end       = NULL;
 932 BOOL    message_body_newlines  = FALSE;
 933 int     message_body_size      = 0;
 934 int     message_body_visible   = 500;
 935 int     message_ended          = END_NOTSTARTED;
 936 uschar *message_headers        = NULL;
 937 uschar *message_id;
 938 uschar *message_id_domain      = NULL;
 939 uschar *message_id_text        = NULL;
 940 struct timeval message_id_tv   = { 0, 0 };
 941 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 942 uschar *message_id_external;
 943 int     message_linecount      = 0;
 944 BOOL    message_logs           = TRUE;
 945 int     message_size           = 0;
 946 uschar *message_size_limit     = US"50M";
 947 #ifdef SUPPORT_I18N
 948 BOOL    message_smtputf8       = FALSE;
 949 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 950 #endif
 951 uschar  message_subdir[2]      = { 0, 0 };
 952 uschar *message_reference      = NULL;
 953
 954 /* MIME ACL expandables */
 955 #ifdef WITH_CONTENT_SCAN
 956 int     mime_anomaly_level     = 0;
 957 const uschar *mime_anomaly_text      = NULL;
 958 uschar *mime_boundary          = NULL;
 959 uschar *mime_charset           = NULL;
 960 uschar *mime_content_description = NULL;
 961 uschar *mime_content_disposition = NULL;
 962 uschar *mime_content_id        = NULL;
 963 unsigned int mime_content_size = 0;
 964 uschar *mime_content_transfer_encoding = NULL;
 965 uschar *mime_content_type      = NULL;
 966 uschar *mime_decoded_filename  = NULL;
 967 uschar *mime_filename          = NULL;
 968 int     mime_is_multipart      = 0;
 969 int     mime_is_coverletter    = 0;
 970 int     mime_is_rfc822         = 0;
 971 int     mime_part_count        = -1;
 972 #endif
 973
 974 BOOL    mua_wrapper            = FALSE;
 975
 976 uid_t  *never_users            = NULL;
 977 #ifdef WITH_CONTENT_SCAN
 978 BOOL    no_mbox_unspool        = FALSE;
 979 #endif
 980 BOOL    no_multiline_responses = FALSE;
 981
 982 uid_t   original_euid;
 983 gid_t   originator_gid;
 984 uschar *originator_login       = NULL;
 985 uschar *originator_name        = NULL;
 986 uid_t   originator_uid;
 987 uschar *override_local_interfaces = NULL;
 988 uschar *override_pid_file_path = NULL;
 989
 990 BOOL    parse_allow_group      = FALSE;
 991 BOOL    parse_found_group      = FALSE;
 992 uschar *percent_hack_domains   = NULL;
 993 uschar *pid_file_path          = US PID_FILE_PATH
 994                            "\0<--------------Space to patch pid_file_path->";
 995 BOOL    pipelining_enable      = TRUE;
 996 uschar *pipelining_advertise_hosts = US"*";
 997 BOOL    preserve_message_logs  = FALSE;
 998 uschar *primary_hostname       = NULL;
 999 BOOL    print_topbitchars      = FALSE;
1000 uschar  process_info[PROCESS_INFO_SIZE];
1001 int     process_info_len       = 0;
1002 uschar *process_log_path       = NULL;
1003 BOOL    prod_requires_admin    = TRUE;
1004
1005 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1006 uschar *hosts_proxy            = US"";
1007 uschar *proxy_external_address = US"";
1008 int     proxy_external_port    = 0;
1009 uschar *proxy_local_address    = US"";
1010 int     proxy_local_port       = 0;
1011 BOOL    proxy_session          = FALSE;
1012 BOOL    proxy_session_failed   = FALSE;
1013 #endif
1014
1015 uschar *prvscheck_address      = NULL;
1016 uschar *prvscheck_keynum       = NULL;
1017 uschar *prvscheck_result       = NULL;
1018
1019
1020 const uschar *qualify_domain_recipient = NULL;
1021 uschar *qualify_domain_sender  = NULL;
1022 BOOL    queue_2stage           = FALSE;
1023 uschar *queue_domains          = NULL;
1024 int     queue_interval         = -1;
1025 BOOL    queue_list_requires_admin = TRUE;
1026 BOOL    queue_only             = FALSE;
1027 uschar *queue_only_file        = NULL;
1028 int     queue_only_load        = -1;
1029 BOOL    queue_only_load_latch  = TRUE;
1030 BOOL    queue_only_override    = TRUE;
1031 BOOL    queue_only_policy      = FALSE;
1032 BOOL    queue_run_first_delivery = FALSE;
1033 BOOL    queue_run_force        = FALSE;
1034 BOOL    queue_run_in_order     = FALSE;
1035 BOOL    queue_run_local        = FALSE;
1036 int     queue_run_max          = 5;
1037 pid_t   queue_run_pid          = (pid_t)0;
1038 int     queue_run_pipe         = -1;
1039 BOOL    queue_running          = FALSE;
1040 BOOL    queue_smtp             = FALSE;
1041 uschar *queue_smtp_domains     = NULL;
1042
1043 unsigned int random_seed       = 0;
1044 tree_node *ratelimiters_cmd    = NULL;
1045 tree_node *ratelimiters_conn   = NULL;
1046 tree_node *ratelimiters_mail   = NULL;
1047 uschar *raw_active_hostname    = NULL;
1048 uschar *raw_sender             = NULL;
1049 uschar **raw_recipients        = NULL;
1050 int     raw_recipients_count   = 0;
1051
1052 int     rcpt_count             = 0;
1053 int     rcpt_fail_count        = 0;
1054 int     rcpt_defer_count       = 0;
1055 gid_t   real_gid;
1056 uid_t   real_uid;
1057 BOOL    really_exim            = TRUE;
1058 BOOL    receive_call_bombout   = FALSE;
1059 int     receive_linecount      = 0;
1060 int     receive_messagecount   = 0;
1061 int     receive_timeout        = 0;
1062 int     received_count         = 0;
1063 uschar *received_for           = NULL;
1064
1065 /*  This is the default text for Received headers generated by Exim. The
1066 date  will be automatically added on the end. */
1067
1068 uschar *received_header_text   = US
1069      "Received: "
1070      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1071      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1072      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1073      "by $primary_hostname "
1074      "${if def:received_protocol {with $received_protocol}} "
1075      #ifdef SUPPORT_TLS
1076      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1077      #endif
1078      "(Exim $version_number)\n\t"
1079      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1080      "id $message_exim_id"
1081      "${if def:received_for {\n\tfor $received_for}}"
1082      "\0<---------------Space to patch received_header_text->";
1083
1084 int     received_headers_max   = 30;
1085 uschar *received_protocol      = NULL;
1086 int     received_time          = 0;
1087 uschar *recipient_data         = NULL;
1088 uschar *recipient_unqualified_hosts = NULL;
1089 uschar *recipient_verify_failure = NULL;
1090 int     recipients_count       = 0;
1091 BOOL    recipients_discarded   = FALSE;
1092 recipient_item  *recipients_list = NULL;
1093 int     recipients_list_max    = 0;
1094 int     recipients_max         = 0;
1095 BOOL    recipients_max_reject  = FALSE;
1096 const pcre *regex_AUTH         = NULL;
1097 const pcre *regex_check_dns_names = NULL;
1098 const pcre *regex_From         = NULL;
1099 const pcre *regex_IGNOREQUOTA  = NULL;
1100 const pcre *regex_PIPELINING   = NULL;
1101 const pcre *regex_SIZE         = NULL;
1102 const pcre *regex_ismsgid      = NULL;
1103 const pcre *regex_smtp_code    = NULL;
1104 uschar *regex_vars[REGEX_VARS];
1105 #ifdef WHITELIST_D_MACROS
1106 const pcre *regex_whitelisted_macro = NULL;
1107 #endif
1108 #ifdef WITH_CONTENT_SCAN
1109 uschar *regex_match_string     = NULL;
1110 #endif
1111 int     remote_delivery_count  = 0;
1112 int     remote_max_parallel    = 2;
1113 uschar *remote_sort_domains    = NULL;
1114 int     retry_data_expire      = 7*24*60*60;
1115 int     retry_interval_max     = 24*60*60;
1116 int     retry_maximum_timeout  = 0;        /* set from retry config */
1117 retry_config  *retries         = NULL;
1118 uschar *return_path            = NULL;
1119 BOOL    return_path_remove     = TRUE;
1120 int     rewrite_existflags     = 0;
1121 uschar *rfc1413_hosts          = US"@[]";
1122 int     rfc1413_query_timeout  = 0;
1123 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1124 uid_t   root_gid               = ROOT_GID;
1125 uid_t   root_uid               = ROOT_UID;
1126
1127 router_instance  *routers  = NULL;
1128 router_instance  router_defaults = {
1129     NULL,                      /* chain pointer */
1130     NULL,                      /* name */
1131     NULL,                      /* info */
1132     NULL,                      /* private options block pointer */
1133     NULL,                      /* driver name */
1134
1135     NULL,                      /* address_data */
1136 #ifdef EXPERIMENTAL_BRIGHTMAIL
1137     NULL,                      /* bmi_rule */
1138 #endif
1139     NULL,                      /* cannot_route_message */
1140     NULL,                      /* condition */
1141     NULL,                      /* current_directory */
1142     NULL,                      /* debug_string */
1143     NULL,                      /* domains */
1144     NULL,                      /* errors_to */
1145     NULL,                      /* expand_gid */
1146     NULL,                      /* expand_uid */
1147     NULL,                      /* expand_more */
1148     NULL,                      /* expand_unseen */
1149     NULL,                      /* extra_headers */
1150     NULL,                      /* fallback_hosts */
1151     NULL,                      /* home_directory */
1152     NULL,                      /* ignore_target_hosts */
1153     NULL,                      /* local_parts */
1154     NULL,                      /* pass_router_name */
1155     NULL,                      /* prefix */
1156     NULL,                      /* redirect_router_name */
1157     NULL,                      /* remove_headers */
1158     NULL,                      /* require_files */
1159     NULL,                      /* router_home_directory */
1160     US"freeze",                /* self */
1161     NULL,                      /* senders */
1162     NULL,                      /* suffix */
1163     NULL,                      /* translate_ip_address */
1164     NULL,                      /* transport_name */
1165
1166     TRUE,                      /* address_test */
1167 #ifdef EXPERIMENTAL_BRIGHTMAIL
1168     FALSE,                     /* bmi_deliver_alternate */
1169     FALSE,                     /* bmi_deliver_default */
1170     FALSE,                     /* bmi_dont_deliver */
1171 #endif
1172     TRUE,                      /* expn */
1173     FALSE,                     /* caseful_local_part */
1174     FALSE,                     /* check_local_user */
1175     FALSE,                     /* disable_logging */
1176     FALSE,                     /* fail_verify_recipient */
1177     FALSE,                     /* fail_verify_sender */
1178     FALSE,                     /* gid_set */
1179     FALSE,                     /* initgroups */
1180     TRUE_UNSET,                /* log_as_local */
1181     TRUE,                      /* more */
1182     FALSE,                     /* pass_on_timeout */
1183     FALSE,                     /* prefix_optional */
1184     TRUE,                      /* repeat_use */
1185     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1186     FALSE,                     /* same_domain_copy_routing */
1187     FALSE,                     /* self_rewrite */
1188     FALSE,                     /* suffix_optional */
1189     FALSE,                     /* verify_only */
1190     TRUE,                      /* verify_recipient */
1191     TRUE,                      /* verify_sender */
1192     FALSE,                     /* uid_set */
1193     FALSE,                     /* unseen */
1194     FALSE,                     /* dsn_lasthop */
1195
1196     self_freeze,               /* self_code */
1197     (uid_t)(-1),               /* uid */
1198     (gid_t)(-1),               /* gid */
1199
1200     NULL,                      /* fallback_hostlist */
1201     NULL,                      /* transport instance */
1202     NULL,                      /* pass_router */
1203     NULL,                      /* redirect_router */
1204
1205     { NULL, NULL },            /* dnssec_domains {require,request} */
1206 };
1207
1208 uschar *router_name            = NULL;
1209
1210 ip_address_item *running_interfaces = NULL;
1211 BOOL    running_in_test_harness = FALSE;
1212
1213 /* This is a weird one. The following string gets patched in the binary by the
1214 script that sets up a copy of Exim for running in the test harness. It seems
1215 that compilers are now clever, and share constant strings if they can.
1216 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1217 make use of the end of this string in order to save space. So the patching then
1218 wrecks this. We defeat this optimization by adding some additional characters
1219 onto the end of the string. */
1220
1221 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1222
1223 int     runrc                  = 0;
1224
1225 uschar *search_error_message   = NULL;
1226 BOOL    search_find_defer      = FALSE;
1227 uschar *self_hostname          = NULL;
1228 uschar *sender_address         = NULL;
1229 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1230 uschar *sender_address_data    = NULL;
1231 BOOL    sender_address_forced  = FALSE;
1232 uschar *sender_address_unrewritten = NULL;
1233 uschar *sender_data            = NULL;
1234 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1235 uschar *sender_fullhost        = NULL;
1236 BOOL    sender_helo_dnssec     = FALSE;
1237 uschar *sender_helo_name       = NULL;
1238 uschar **sender_host_aliases   = &no_aliases;
1239 uschar *sender_host_address    = NULL;
1240 uschar *sender_host_authenticated = NULL;
1241 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1242 BOOL    sender_host_dnssec     = FALSE;
1243 uschar *sender_host_name       = NULL;
1244 int     sender_host_port       = 0;
1245 BOOL    sender_host_notsocket  = FALSE;
1246 BOOL    sender_host_unknown    = FALSE;
1247 uschar *sender_ident           = NULL;
1248 BOOL    sender_local           = FALSE;
1249 BOOL    sender_name_forced     = FALSE;
1250 uschar *sender_rate            = NULL;
1251 uschar *sender_rate_limit      = NULL;
1252 uschar *sender_rate_period     = NULL;
1253 uschar *sender_rcvhost         = NULL;
1254 BOOL    sender_set_untrusted   = FALSE;
1255 uschar *sender_unqualified_hosts = NULL;
1256 uschar *sender_verify_failure = NULL;
1257 address_item *sender_verified_list  = NULL;
1258 address_item *sender_verified_failed = NULL;
1259 int     sender_verified_rc     = -1;
1260 BOOL    sender_verified_responded = FALSE;
1261 uschar *sending_ip_address     = NULL;
1262 int     sending_port           = -1;
1263 SIGNAL_BOOL sigalrm_seen       = FALSE;
1264 uschar **sighup_argv           = NULL;
1265 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1266 int     smtp_accept_count      = 0;
1267 BOOL    smtp_accept_keepalive  = TRUE;
1268 int     smtp_accept_max        = 20;
1269 int     smtp_accept_max_nonmail= 10;
1270 uschar *smtp_accept_max_nonmail_hosts = US"*";
1271 int     smtp_accept_max_per_connection = 1000;
1272 uschar *smtp_accept_max_per_host = NULL;
1273 int     smtp_accept_queue      = 0;
1274 int     smtp_accept_queue_per_connection = 10;
1275 int     smtp_accept_reserve    = 0;
1276 uschar *smtp_active_hostname   = NULL;
1277 BOOL    smtp_authenticated     = FALSE;
1278 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1279                              "Exim $version_number $tod_full"
1280                              "\0<---------------Space to patch smtp_banner->";
1281 BOOL    smtp_batched_input     = FALSE;
1282 BOOL    smtp_check_spool_space = TRUE;
1283 int     smtp_ch_index          = 0;
1284 uschar *smtp_cmd_argument      = NULL;
1285 uschar *smtp_cmd_buffer        = NULL;
1286 time_t  smtp_connection_start  = 0;
1287 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1288 int     smtp_connect_backlog   = 20;
1289 double  smtp_delay_mail        = 0.0;
1290 double  smtp_delay_rcpt        = 0.0;
1291 BOOL    smtp_enforce_sync      = TRUE;
1292 FILE   *smtp_in                = NULL;
1293 BOOL    smtp_input             = FALSE;
1294 int     smtp_load_reserve      = -1;
1295 int     smtp_mailcmd_count     = 0;
1296 FILE   *smtp_out               = NULL;
1297 uschar *smtp_etrn_command      = NULL;
1298 BOOL    smtp_etrn_serialize    = TRUE;
1299 int     smtp_max_synprot_errors= 3;
1300 int     smtp_max_unknown_commands = 3;
1301 uschar *smtp_notquit_reason    = NULL;
1302 uschar *smtp_ratelimit_hosts   = NULL;
1303 uschar *smtp_ratelimit_mail    = NULL;
1304 uschar *smtp_ratelimit_rcpt    = NULL;
1305 uschar *smtp_read_error        = US"";
1306 int     smtp_receive_timeout   = 5*60;
1307 uschar *smtp_receive_timeout_s = NULL;
1308 uschar *smtp_reserve_hosts     = NULL;
1309 BOOL    smtp_return_error_details = FALSE;
1310 int     smtp_rlm_base          = 0;
1311 double  smtp_rlm_factor        = 0.0;
1312 int     smtp_rlm_limit         = 0;
1313 int     smtp_rlm_threshold     = INT_MAX;
1314 int     smtp_rlr_base          = 0;
1315 double  smtp_rlr_factor        = 0.0;
1316 int     smtp_rlr_limit         = 0;
1317 int     smtp_rlr_threshold     = INT_MAX;
1318 BOOL    smtp_use_pipelining    = FALSE;
1319 BOOL    smtp_use_size          = FALSE;
1320 #ifdef SUPPORT_I18N
1321 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1322 #endif
1323
1324 #ifdef WITH_CONTENT_SCAN
1325 uschar *spamd_address          = US"127.0.0.1 783";
1326 uschar *spam_bar               = NULL;
1327 uschar *spam_report            = NULL;
1328 uschar *spam_action            = NULL;
1329 uschar *spam_score             = NULL;
1330 uschar *spam_score_int         = NULL;
1331 #endif
1332 #ifdef EXPERIMENTAL_SPF
1333 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1334 uschar *spf_header_comment     = NULL;
1335 uschar *spf_received           = NULL;
1336 uschar *spf_result             = NULL;
1337 uschar *spf_smtp_comment       = NULL;
1338 #endif
1339
1340 BOOL    split_spool_directory  = FALSE;
1341 uschar *spool_directory        = US SPOOL_DIRECTORY
1342                            "\0<--------------Space to patch spool_directory->";
1343 #ifdef EXPERIMENTAL_SRS
1344 uschar *srs_config             = NULL;
1345 uschar *srs_db_address         = NULL;
1346 uschar *srs_db_key             = NULL;
1347 int     srs_hashlength         = 6;
1348 int     srs_hashmin            = -1;
1349 int     srs_maxage             = 31;
1350 uschar *srs_orig_recipient     = NULL;
1351 uschar *srs_orig_sender        = NULL;
1352 uschar *srs_recipient          = NULL;
1353 uschar *srs_secrets            = NULL;
1354 uschar *srs_status             = NULL;
1355 BOOL    srs_usehash            = TRUE;
1356 BOOL    srs_usetimestamp       = TRUE;
1357 #endif
1358 BOOL    strict_acl_vars        = FALSE;
1359 int     string_datestamp_offset= -1;
1360 int     string_datestamp_length= 0;
1361 int     string_datestamp_type  = -1;
1362 BOOL    strip_excess_angle_brackets = FALSE;
1363 BOOL    strip_trailing_dot     = FALSE;
1364 uschar *submission_domain      = NULL;
1365 BOOL    submission_mode        = FALSE;
1366 uschar *submission_name        = NULL;
1367 BOOL    suppress_local_fixups  = FALSE;
1368 BOOL    suppress_local_fixups_default = FALSE;
1369 BOOL    synchronous_delivery   = FALSE;
1370 BOOL    syslog_duplication     = TRUE;
1371 int     syslog_facility        = LOG_MAIL;
1372 uschar *syslog_processname     = US"exim";
1373 BOOL    syslog_timestamp       = TRUE;
1374 uschar *system_filter          = NULL;
1375
1376 uschar *system_filter_directory_transport = NULL;
1377 uschar *system_filter_file_transport = NULL;
1378 uschar *system_filter_pipe_transport = NULL;
1379 uschar *system_filter_reply_transport = NULL;
1380
1381 gid_t   system_filter_gid      = 0;
1382 BOOL    system_filter_gid_set  = FALSE;
1383 uid_t   system_filter_uid      = (uid_t)-1;
1384 BOOL    system_filter_uid_set  = FALSE;
1385 BOOL    system_filtering       = FALSE;
1386
1387 BOOL    tcp_nodelay            = TRUE;
1388 #ifdef USE_TCP_WRAPPERS
1389 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1390 #endif
1391 int     test_harness_load_avg  = 0;
1392 int     thismessage_size_limit = 0;
1393 int     timeout_frozen_after   = 0;
1394 BOOL    timestamps_utc         = FALSE;
1395
1396 transport_instance  *transports = NULL;
1397
1398 transport_instance  transport_defaults = {
1399     NULL,                     /* chain pointer */
1400     NULL,                     /* name */
1401     NULL,                     /* info */
1402     NULL,                     /* private options block pointer */
1403     NULL,                     /* driver name */
1404     NULL,                     /* setup entry point */
1405     1,                        /* batch_max */
1406     NULL,                     /* batch_id */
1407     NULL,                     /* home_dir */
1408     NULL,                     /* current_dir */
1409     NULL,                     /* expand-multi-domain */
1410     TRUE,                     /* multi-domain */
1411     FALSE,                    /* overrides_hosts */
1412     100,                      /* max_addresses */
1413     500,                      /* connection_max_messages */
1414     FALSE,                    /* deliver_as_creator */
1415     FALSE,                    /* disable_logging */
1416     FALSE,                    /* initgroups */
1417     FALSE,                    /* uid_set */
1418     FALSE,                    /* gid_set */
1419     (uid_t)(-1),              /* uid */
1420     (gid_t)(-1),              /* gid */
1421     NULL,                     /* expand_uid */
1422     NULL,                     /* expand_gid */
1423     NULL,                     /* warn_message */
1424     NULL,                     /* shadow */
1425     NULL,                     /* shadow_condition */
1426     NULL,                     /* filter_command */
1427     NULL,                     /* add_headers */
1428     NULL,                     /* remove_headers */
1429     NULL,                     /* return_path */
1430     NULL,                     /* debug_string */
1431     NULL,                     /* max_parallel */
1432     NULL,                     /* message_size_limit */
1433     NULL,                     /* headers_rewrite */
1434     NULL,                     /* rewrite_rules */
1435     0,                        /* rewrite_existflags */
1436     300,                      /* filter_timeout */
1437     FALSE,                    /* body_only */
1438     FALSE,                    /* delivery_date_add */
1439     FALSE,                    /* envelope_to_add */
1440     FALSE,                    /* headers_only */
1441     FALSE,                    /* rcpt_include_affixes */
1442     FALSE,                    /* return_path_add */
1443     FALSE,                    /* return_output */
1444     FALSE,                    /* return_fail_output */
1445     FALSE,                    /* log_output */
1446     FALSE,                    /* log_fail_output */
1447     FALSE,                    /* log_defer_output */
1448     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1449                                  1 nor 0 so can detect unset */
1450 #ifndef DISABLE_EVENT
1451    ,NULL                      /* event_action */
1452 #endif
1453 };
1454
1455 int     transport_count;
1456 uschar *transport_name          = NULL;
1457 int     transport_newlines;
1458 const uschar **transport_filter_argv  = NULL;
1459 int     transport_filter_timeout;
1460 BOOL    transport_filter_timed_out = FALSE;
1461 int     transport_write_timeout= 0;
1462
1463 tree_node  *tree_dns_fails     = NULL;
1464 tree_node  *tree_duplicates    = NULL;
1465 tree_node  *tree_nonrecipients = NULL;
1466 tree_node  *tree_unusable      = NULL;
1467
1468 BOOL    trusted_caller         = FALSE;
1469 BOOL    trusted_config         = TRUE;
1470 gid_t  *trusted_groups         = NULL;
1471 uid_t  *trusted_users          = NULL;
1472 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1473
1474 uschar *unknown_login          = NULL;
1475 uschar *unknown_username       = NULL;
1476 uschar *untrusted_set_sender   = NULL;
1477
1478 /*  A regex for matching a "From_" line in an incoming message, in the form
1479
1480     From ph10 Fri Jan  5 12:35 GMT 1996
1481
1482 which  the "mail" commands send to the MTA (undocumented, of course), or in
1483 the  form
1484
1485     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1486
1487 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1488 Because  of variations in time formats, just match up to the minutes. That
1489 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1490 so  just require one digit for hours and minutes. The weekday is also absent
1491 in  some forms. */
1492
1493 uschar *uucp_from_pattern      = US
1494    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1495    "(?:"                                          /* Non-extracting bracket */
1496    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1497    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1498    ")"                                            /* End alternation */
1499    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1500
1501 uschar *uucp_from_sender       = US"$1";
1502
1503 uschar *verify_mode            = NULL;
1504 uschar *version_copyright      =
1505  US"Copyright (c) University of Cambridge, 1995 - 2015\n"
1506    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2015";
1507 uschar *version_date           = US"?";
1508 uschar *version_cnumber        = US"????";
1509 uschar *version_string         = US"?";
1510
1511 uschar *warn_message_file      = NULL;
1512 int     warning_count          = 0;
1513 uschar *warnmsg_delay          = NULL;
1514 uschar *warnmsg_recipients     = NULL;
1515 BOOL    write_rejectlog        = TRUE;
1516
1517
1518 /*  End of globals.c */