src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2017 */
   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 = nelem(optionlist_auths);
  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 BOOL    opt_perl_taintmode     = FALSE;
  53 #endif
  54
  55 #ifdef EXPAND_DLFUNC
  56 tree_node *dlobj_anchor        = NULL;
  57 #endif
  58
  59 #ifdef LOOKUP_IBASE
  60 uschar *ibase_servers          = NULL;
  61 #endif
  62
  63 #ifdef LOOKUP_LDAP
  64 uschar *eldap_ca_cert_dir      = NULL;
  65 uschar *eldap_ca_cert_file     = NULL;
  66 uschar *eldap_cert_file        = NULL;
  67 uschar *eldap_cert_key         = NULL;
  68 uschar *eldap_cipher_suite     = NULL;
  69 uschar *eldap_default_servers  = NULL;
  70 uschar *eldap_require_cert     = NULL;
  71 int     eldap_version          = -1;
  72 BOOL    eldap_start_tls        = FALSE;
  73 #endif
  74
  75 #ifdef LOOKUP_MYSQL
  76 uschar *mysql_servers          = NULL;
  77 #endif
  78
  79 #ifdef LOOKUP_ORACLE
  80 uschar *oracle_servers         = NULL;
  81 #endif
  82
  83 #ifdef LOOKUP_PGSQL
  84 uschar *pgsql_servers          = NULL;
  85 #endif
  86
  87 #ifdef LOOKUP_REDIS
  88 uschar *redis_servers          = NULL;
  89 #endif
  90
  91 #ifdef LOOKUP_SQLITE
  92 int     sqlite_lock_timeout    = 5;
  93 #endif
  94
  95 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  96 BOOL    move_frozen_messages   = FALSE;
  97 #endif
  98
  99 /* These variables are outside the #ifdef because it keeps the code less
 100 cluttered in several places (e.g. during logging) if we can always refer to
 101 them. Also, the tls_ variables are now always visible. */
 102
 103 tls_support tls_in = {
 104  -1,   /* tls_active */
 105  0,    /* tls_bits */
 106  FALSE,/* tls_certificate_verified */
 107 #ifdef EXPERIMENTAL_DANE
 108  FALSE,/* dane_verified */
 109  0,    /* tlsa_usage */
 110 #endif
 111  NULL, /* tls_cipher */
 112  FALSE,/* tls_on_connect */
 113  NULL, /* tls_on_connect_ports */
 114  NULL, /* tls_ourcert */
 115  NULL, /* tls_peercert */
 116  NULL, /* tls_peerdn */
 117  NULL, /* tls_sni */
 118  0     /* tls_ocsp */
 119 };
 120 tls_support tls_out = {
 121  -1,   /* tls_active */
 122  0,    /* tls_bits */
 123  FALSE,/* tls_certificate_verified */
 124 #ifdef EXPERIMENTAL_DANE
 125  FALSE,/* dane_verified */
 126  0,    /* tlsa_usage */
 127 #endif
 128  NULL, /* tls_cipher */
 129  FALSE,/* tls_on_connect */
 130  NULL, /* tls_on_connect_ports */
 131  NULL, /* tls_ourcert */
 132  NULL, /* tls_peercert */
 133  NULL, /* tls_peerdn */
 134  NULL, /* tls_sni */
 135  0     /* tls_ocsp */
 136 };
 137
 138 uschar *dsn_envid              = NULL;
 139 int     dsn_ret                = 0;
 140 const pcre  *regex_DSN         = NULL;
 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 *openssl_options        = NULL;
 147 const pcre *regex_STARTTLS     = NULL;
 148 uschar *tls_advertise_hosts    = US"*";
 149 uschar *tls_certificate        = NULL;
 150 uschar *tls_crl                = NULL;
 151 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 152 that's the interop problem which has been observed: GnuTLS suggesting a higher
 153 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 154 int     tls_dh_max_bits        = 2236;
 155 uschar *tls_dhparam            = NULL;
 156 uschar *tls_eccurve            = US"auto";
 157 # ifndef DISABLE_OCSP
 158 uschar *tls_ocsp_file          = NULL;
 159 # endif
 160 uschar *tls_privatekey         = NULL;
 161 BOOL    tls_remember_esmtp     = FALSE;
 162 uschar *tls_require_ciphers    = NULL;
 163 uschar *tls_try_verify_hosts   = NULL;
 164 uschar *tls_verify_certificates= US"system";
 165 uschar *tls_verify_hosts       = NULL;
 166 #else   /*!SUPPORT_TLS*/
 167 uschar *tls_advertise_hosts    = NULL;
 168 #endif
 169
 170 #ifndef DISABLE_PRDR
 171 /* Per Recipient Data Response variables */
 172 BOOL    prdr_enable            = FALSE;
 173 BOOL    prdr_requested         = FALSE;
 174 const pcre *regex_PRDR         = NULL;
 175 #endif
 176
 177 #ifdef SUPPORT_I18N
 178 const pcre *regex_UTF8         = NULL;
 179 #endif
 180
 181 /* Input-reading functions for messages, so we can use special ones for
 182 incoming TCP/IP. The defaults use stdin. We never need these for any
 183 stand-alone tests. */
 184
 185 #ifndef STAND_ALONE
 186 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 187 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 188 int (*receive_getc)(unsigned)  = stdin_getc;
 189 void (*receive_get_cache)(void)= NULL;
 190 int (*receive_ungetc)(int)     = stdin_ungetc;
 191 int (*receive_feof)(void)      = stdin_feof;
 192 int (*receive_ferror)(void)    = stdin_ferror;
 193 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 194 #endif
 195
 196
 197 /* List of per-address expansion variables for clearing and saving/restoring
 198 when verifying one address while routing/verifying another. We have to have
 199 the size explicit, because it is referenced from more than one module. */
 200
 201 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 202   CUSS &deliver_address_data,
 203   CUSS &deliver_domain,
 204   CUSS &deliver_domain_data,
 205   CUSS &deliver_domain_orig,
 206   CUSS &deliver_domain_parent,
 207   CUSS &deliver_localpart,
 208   CUSS &deliver_localpart_data,
 209   CUSS &deliver_localpart_orig,
 210   CUSS &deliver_localpart_parent,
 211   CUSS &deliver_localpart_prefix,
 212   CUSS &deliver_localpart_suffix,
 213   CUSS (uschar **)(&deliver_recipients),
 214   CUSS &deliver_host,
 215   CUSS &deliver_home,
 216   CUSS &address_file,
 217   CUSS &address_pipe,
 218   CUSS &self_hostname,
 219   NULL };
 220
 221 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 222
 223 /* General global variables */
 224
 225 header_line *acl_added_headers = NULL;
 226 tree_node *acl_anchor          = NULL;
 227 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 228                                   NULL, NULL, NULL, NULL};
 229 int     acl_narg               = 0;
 230
 231 uschar *acl_not_smtp           = NULL;
 232 #ifdef WITH_CONTENT_SCAN
 233 uschar *acl_not_smtp_mime      = NULL;
 234 #endif
 235 uschar *acl_not_smtp_start     = NULL;
 236 uschar *acl_removed_headers    = NULL;
 237 uschar *acl_smtp_auth          = NULL;
 238 uschar *acl_smtp_connect       = NULL;
 239 uschar *acl_smtp_data          = NULL;
 240 #ifndef DISABLE_PRDR
 241 uschar *acl_smtp_data_prdr     = US"accept";
 242 #endif
 243 #ifndef DISABLE_DKIM
 244 uschar *acl_smtp_dkim          = NULL;
 245 #endif
 246 uschar *acl_smtp_etrn          = NULL;
 247 uschar *acl_smtp_expn          = NULL;
 248 uschar *acl_smtp_helo          = NULL;
 249 uschar *acl_smtp_mail          = NULL;
 250 uschar *acl_smtp_mailauth      = NULL;
 251 #ifdef WITH_CONTENT_SCAN
 252 uschar *acl_smtp_mime          = NULL;
 253 #endif
 254 uschar *acl_smtp_notquit       = NULL;
 255 uschar *acl_smtp_predata       = NULL;
 256 uschar *acl_smtp_quit          = NULL;
 257 uschar *acl_smtp_rcpt          = NULL;
 258 uschar *acl_smtp_starttls      = NULL;
 259 uschar *acl_smtp_vrfy          = NULL;
 260
 261 BOOL    acl_temp_details       = FALSE;
 262 tree_node *acl_var_c           = NULL;
 263 tree_node *acl_var_m           = NULL;
 264 uschar *acl_verify_message     = NULL;
 265 string_item *acl_warn_logged   = NULL;
 266
 267 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 268 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 269
 270 uschar *acl_wherenames[]       = { US"RCPT",
 271                                    US"MAIL",
 272                                    US"PREDATA",
 273                                    US"MIME",
 274                                    US"DKIM",
 275                                    US"DATA",
 276 #ifndef DISABLE_PRDR
 277                                    US"PRDR",
 278 #endif
 279                                    US"non-SMTP",
 280                                    US"AUTH",
 281                                    US"connection",
 282                                    US"ETRN",
 283                                    US"EXPN",
 284                                    US"EHLO or HELO",
 285                                    US"MAILAUTH",
 286                                    US"non-SMTP-start",
 287                                    US"NOTQUIT",
 288                                    US"QUIT",
 289                                    US"STARTTLS",
 290                                    US"VRFY",
 291                                    US"delivery",
 292                                    US"unknown"
 293                                  };
 294
 295 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 296                                    US"550",     /* MAIL */
 297                                    US"550",     /* PREDATA */
 298                                    US"550",     /* MIME */
 299                                    US"550",     /* DKIM */
 300                                    US"550",     /* DATA */
 301 #ifndef DISABLE_PRDR
 302                                    US"550",    /* RCPT PRDR */
 303 #endif
 304                                    US"0",       /* not SMTP; not relevant */
 305                                    US"503",     /* AUTH */
 306                                    US"550",     /* connect */
 307                                    US"458",     /* ETRN */
 308                                    US"550",     /* EXPN */
 309                                    US"550",     /* HELO/EHLO */
 310                                    US"0",       /* MAILAUTH; not relevant */
 311                                    US"0",       /* not SMTP; not relevant */
 312                                    US"0",       /* NOTQUIT; not relevant */
 313                                    US"0",       /* QUIT; not relevant */
 314                                    US"550",     /* STARTTLS */
 315                                    US"252",     /* VRFY */
 316                                    US"0",       /* delivery; not relevant */
 317                                    US"0"        /* unknown; not relevant */
 318                                  };
 319
 320 BOOL    active_local_from_check = FALSE;
 321 BOOL    active_local_sender_retain = FALSE;
 322 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 323 uschar *add_environment        = NULL;
 324 address_item  *addr_duplicate  = NULL;
 325
 326 address_item address_defaults = {
 327   NULL,                 /* next */
 328   NULL,                 /* parent */
 329   NULL,                 /* first */
 330   NULL,                 /* dupof */
 331   NULL,                 /* start_router */
 332   NULL,                 /* router */
 333   NULL,                 /* transport */
 334   NULL,                 /* host_list */
 335   NULL,                 /* host_used */
 336   NULL,                 /* fallback_hosts */
 337   NULL,                 /* reply */
 338   NULL,                 /* retries */
 339   NULL,                 /* address */
 340   NULL,                 /* unique */
 341   NULL,                 /* cc_local_part */
 342   NULL,                 /* lc_local_part */
 343   NULL,                 /* local_part */
 344   NULL,                 /* prefix */
 345   NULL,                 /* suffix */
 346   NULL,                 /* domain */
 347   NULL,                 /* address_retry_key */
 348   NULL,                 /* domain_retry_key */
 349   NULL,                 /* current_dir */
 350   NULL,                 /* home_dir */
 351   NULL,                 /* message */
 352   NULL,                 /* user_message */
 353   NULL,                 /* onetime_parent */
 354   NULL,                 /* pipe_expandn */
 355   NULL,                 /* return_filename */
 356   NULL,                 /* self_hostname */
 357   NULL,                 /* shadow_message */
 358 #ifdef SUPPORT_TLS
 359   NULL,                 /* cipher */
 360   NULL,                 /* ourcert */
 361   NULL,                 /* peercert */
 362   NULL,                 /* peerdn */
 363   OCSP_NOT_REQ,         /* ocsp */
 364 #endif
 365 #ifdef EXPERIMENTAL_DSN_INFO
 366   NULL,                 /* smtp_greeting */
 367   NULL,                 /* helo_response */
 368 #endif
 369   NULL,                 /* authenticator */
 370   NULL,                 /* auth_id */
 371   NULL,                 /* auth_sndr */
 372   NULL,                 /* dsn_orcpt */
 373   0,                    /* dsn_flags */
 374   0,                    /* dsn_aware */
 375   (uid_t)(-1),          /* uid */
 376   (gid_t)(-1),          /* gid */
 377   0,                    /* flags */
 378   { 0 },                /* domain_cache - any larger array should be zeroed */
 379   { 0 },                /* localpart_cache - ditto */
 380   -1,                   /* mode */
 381   0,                    /* more_errno */
 382   ERRNO_UNKNOWNERROR,   /* basic_errno */
 383   0,                    /* child_count */
 384   -1,                   /* return_file */
 385   SPECIAL_NONE,         /* special_action */
 386   DEFER,                /* transport_return */
 387   {                     /* fields that are propagated to children */
 388     NULL,               /* address_data */
 389     NULL,               /* domain_data */
 390     NULL,               /* localpart_data */
 391     NULL,               /* errors_address */
 392     NULL,               /* extra_headers */
 393     NULL,               /* remove_headers */
 394 #ifdef EXPERIMENTAL_SRS
 395     NULL,               /* srs_sender */
 396 #endif
 397 #ifdef SUPPORT_I18N
 398     FALSE,              /* utf8 */
 399 #endif
 400   }
 401 };
 402
 403 uschar *address_file           = NULL;
 404 uschar *address_pipe           = NULL;
 405 BOOL    address_test_mode      = FALSE;
 406 tree_node *addresslist_anchor  = NULL;
 407 int     addresslist_count      = 0;
 408 gid_t  *admin_groups           = NULL;
 409 BOOL    admin_user             = FALSE;
 410 BOOL    allow_auth_unadvertised= FALSE;
 411 BOOL    allow_domain_literals  = FALSE;
 412 BOOL    allow_mx_to_ip         = FALSE;
 413 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 414 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 415 BOOL    allow_utf8_domains     = FALSE;
 416 uschar *authenticated_fail_id  = NULL;
 417 uschar *authenticated_id       = NULL;
 418 uschar *authenticated_sender   = NULL;
 419 BOOL    authentication_failed  = FALSE;
 420 auth_instance  *auths          = NULL;
 421 uschar *auth_advertise_hosts   = US"*";
 422 auth_instance auth_defaults    = {
 423     NULL,                      /* chain pointer */
 424     NULL,                      /* name */
 425     NULL,                      /* info */
 426     NULL,                      /* private options block pointer */
 427     NULL,                      /* driver_name */
 428     NULL,                      /* advertise_condition */
 429     NULL,                      /* client_condition */
 430     NULL,                      /* public_name */
 431     NULL,                      /* set_id */
 432     NULL,                      /* set_client_id */
 433     NULL,                      /* server_mail_auth_condition */
 434     NULL,                      /* server_debug_string */
 435     NULL,                      /* server_condition */
 436     FALSE,                     /* client */
 437     FALSE,                     /* server */
 438     FALSE                      /* advertised */
 439 };
 440
 441 uschar *auth_defer_msg         = US"reason not recorded";
 442 uschar *auth_defer_user_msg    = US"";
 443 uschar *auth_vars[AUTH_VARS];
 444 int     auto_thaw              = 0;
 445 #ifdef WITH_CONTENT_SCAN
 446 BOOL    av_failed              = FALSE;
 447 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 448 #endif
 449
 450 BOOL    background_daemon      = TRUE;
 451
 452 #if BASE_62 == 62
 453 uschar *base62_chars=
 454     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 455 #else
 456 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 457 #endif
 458
 459 uschar *bi_command             = NULL;
 460 uschar *big_buffer             = NULL;
 461 int     big_buffer_size        = BIG_BUFFER_SIZE;
 462 #ifdef EXPERIMENTAL_BRIGHTMAIL
 463 uschar *bmi_alt_location       = NULL;
 464 uschar *bmi_base64_tracker_verdict = NULL;
 465 uschar *bmi_base64_verdict     = NULL;
 466 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 467 int     bmi_deliver            = 1;
 468 int     bmi_run                = 0;
 469 uschar *bmi_verdicts           = NULL;
 470 #endif
 471 int     body_8bitmime          = 0;
 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       = 100;
 492 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 493 BOOL    check_rfc2047_length   = TRUE;
 494 int     check_spool_inodes     = 100;
 495 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 496
 497 uschar *chunking_advertise_hosts = US"*";
 498 unsigned chunking_datasize     = 0;
 499 unsigned chunking_data_left    = 0;
 500 BOOL    chunking_offered       = FALSE;
 501 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 502 const pcre *regex_CHUNKING     = NULL;
 503
 504 uschar *client_authenticator   = NULL;
 505 uschar *client_authenticated_id = NULL;
 506 uschar *client_authenticated_sender = NULL;
 507 int     clmacro_count          = 0;
 508 uschar *clmacros[MAX_CLMACROS];
 509 BOOL    config_changed         = FALSE;
 510 FILE   *config_file            = NULL;
 511 const uschar *config_filename  = NULL;
 512 int     config_lineno          = 0;
 513 #ifdef CONFIGURE_GROUP
 514 gid_t   config_gid             = CONFIGURE_GROUP;
 515 #else
 516 gid_t   config_gid             = 0;
 517 #endif
 518 uschar *config_main_filelist   = US CONFIGURE_FILE
 519                          "\0<-----------Space to patch configure_filename->";
 520 uschar *config_main_filename   = NULL;
 521 uschar *config_main_directory  = NULL;
 522
 523 #ifdef CONFIGURE_OWNER
 524 uid_t   config_uid             = CONFIGURE_OWNER;
 525 #else
 526 uid_t   config_uid             = 0;
 527 #endif
 528
 529 int     connection_max_messages= -1;
 530 uschar *continue_hostname      = NULL;
 531 uschar *continue_host_address  = NULL;
 532 BOOL    continue_more          = FALSE;
 533 int     continue_sequence      = 1;
 534 uschar *continue_transport     = NULL;
 535
 536 uschar *csa_status             = NULL;
 537 cut_t   cutthrough = {
 538   FALSE,                                /* delivery: when to attempt */
 539   FALSE,                                /* on defer: spool locally */
 540   -1,                                   /* fd: open connection */
 541   0,                                    /* nrcpt: number of addresses */
 542 };
 543
 544 BOOL    daemon_listen          = FALSE;
 545 uschar *daemon_smtp_port       = US"smtp";
 546 int     daemon_startup_retries = 9;
 547 int     daemon_startup_sleep   = 30;
 548
 549 #ifdef EXPERIMENTAL_DCC
 550 BOOL    dcc_direct_add_header  = FALSE;
 551 uschar *dcc_header             = NULL;
 552 uschar *dcc_result             = NULL;
 553 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 554 uschar *dccifd_options         = US"header";
 555 #endif
 556
 557 BOOL    debug_daemon           = FALSE;
 558 int     debug_fd               = -1;
 559 FILE   *debug_file             = NULL;
 560 int     debug_notall[]         = {
 561   Di_memory,
 562   -1
 563 };
 564 bit_table debug_options[]      = { /* must be in alphabetical order */
 565   BIT_TABLE(D, acl),
 566   BIT_TABLE(D, all),
 567   BIT_TABLE(D, auth),
 568   BIT_TABLE(D, deliver),
 569   BIT_TABLE(D, dns),
 570   BIT_TABLE(D, dnsbl),
 571   BIT_TABLE(D, exec),
 572   BIT_TABLE(D, expand),
 573   BIT_TABLE(D, filter),
 574   BIT_TABLE(D, hints_lookup),
 575   BIT_TABLE(D, host_lookup),
 576   BIT_TABLE(D, ident),
 577   BIT_TABLE(D, interface),
 578   BIT_TABLE(D, lists),
 579   BIT_TABLE(D, load),
 580   BIT_TABLE(D, local_scan),
 581   BIT_TABLE(D, lookup),
 582   BIT_TABLE(D, memory),
 583   BIT_TABLE(D, pid),
 584   BIT_TABLE(D, process_info),
 585   BIT_TABLE(D, queue_run),
 586   BIT_TABLE(D, receive),
 587   BIT_TABLE(D, resolver),
 588   BIT_TABLE(D, retry),
 589   BIT_TABLE(D, rewrite),
 590   BIT_TABLE(D, route),
 591   BIT_TABLE(D, timestamp),
 592   BIT_TABLE(D, tls),
 593   BIT_TABLE(D, transport),
 594   BIT_TABLE(D, uid),
 595   BIT_TABLE(D, verify),
 596 };
 597 int     debug_options_count    = nelem(debug_options);
 598
 599 unsigned int debug_selector    = 0;
 600 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 601 uschar *delay_warning_condition=
 602   US"${if or {"
 603             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 604             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 605             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 606             "} {no}{yes}}";
 607 BOOL    delivery_date_remove   = TRUE;
 608 uschar *deliver_address_data   = NULL;
 609 int     deliver_datafile       = -1;
 610 const uschar *deliver_domain   = NULL;
 611 uschar *deliver_domain_data    = NULL;
 612 const uschar *deliver_domain_orig = NULL;
 613 const uschar *deliver_domain_parent = NULL;
 614 BOOL    deliver_drop_privilege = FALSE;
 615 BOOL    deliver_firsttime      = FALSE;
 616 BOOL    deliver_force          = FALSE;
 617 BOOL    deliver_freeze         = FALSE;
 618 time_t  deliver_frozen_at      = 0;
 619 uschar *deliver_home           = NULL;
 620 const uschar *deliver_host     = NULL;
 621 const uschar *deliver_host_address = NULL;
 622 int     deliver_host_port      = 0;
 623 uschar *deliver_in_buffer      = NULL;
 624 ino_t   deliver_inode          = 0;
 625 uschar *deliver_localpart      = NULL;
 626 uschar *deliver_localpart_data = NULL;
 627 uschar *deliver_localpart_orig = NULL;
 628 uschar *deliver_localpart_parent = NULL;
 629 uschar *deliver_localpart_prefix = NULL;
 630 uschar *deliver_localpart_suffix = NULL;
 631 BOOL    deliver_force_thaw     = FALSE;
 632 BOOL    deliver_manual_thaw    = FALSE;
 633 uschar *deliver_out_buffer     = NULL;
 634 int     deliver_queue_load_max = -1;
 635 address_item  *deliver_recipients = NULL;
 636 uschar *deliver_selectstring   = NULL;
 637 BOOL    deliver_selectstring_regex = FALSE;
 638 uschar *deliver_selectstring_sender = NULL;
 639 BOOL    deliver_selectstring_sender_regex = FALSE;
 640 BOOL    disable_callout_flush  = FALSE;
 641 BOOL    disable_delay_flush    = FALSE;
 642 #ifdef ENABLE_DISABLE_FSYNC
 643 BOOL    disable_fsync          = FALSE;
 644 #endif
 645 BOOL    disable_ipv6           = FALSE;
 646 BOOL    disable_logging        = FALSE;
 647
 648 #ifndef DISABLE_DKIM
 649 BOOL    dkim_collect_input       = FALSE;
 650 uschar *dkim_cur_signer          = NULL;
 651 BOOL    dkim_disable_verify      = FALSE;
 652 int     dkim_key_length          = 0;
 653 uschar *dkim_signers             = NULL;
 654 uschar *dkim_signing_domain      = NULL;
 655 uschar *dkim_signing_selector    = NULL;
 656 uschar *dkim_verify_signers      = US"$dkim_signers";
 657 #endif
 658 #ifdef EXPERIMENTAL_DMARC
 659 BOOL    dmarc_has_been_checked  = FALSE;
 660 uschar *dmarc_ar_header         = NULL;
 661 uschar *dmarc_domain_policy     = NULL;
 662 uschar *dmarc_forensic_sender   = NULL;
 663 uschar *dmarc_history_file      = NULL;
 664 uschar *dmarc_status            = NULL;
 665 uschar *dmarc_status_text       = NULL;
 666 uschar *dmarc_tld_file          = NULL;
 667 uschar *dmarc_used_domain       = NULL;
 668 BOOL    dmarc_disable_verify    = FALSE;
 669 BOOL    dmarc_enable_forensic   = FALSE;
 670 #endif
 671
 672 uschar *dns_again_means_nonexist = NULL;
 673 int     dns_csa_search_limit   = 5;
 674 BOOL    dns_csa_use_reverse    = TRUE;
 675 #ifdef EXPERIMENTAL_DANE
 676 int     dns_dane_ok            = -1;
 677 #endif
 678 uschar *dns_ipv4_lookup        = NULL;
 679 int     dns_retrans            = 0;
 680 int     dns_retry              = 0;
 681 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 682 uschar *dns_trust_aa           = NULL;
 683 int     dns_use_edns0          = -1; /* <0 = not coerced */
 684 uschar *dnslist_domain         = NULL;
 685 uschar *dnslist_matched        = NULL;
 686 uschar *dnslist_text           = NULL;
 687 uschar *dnslist_value          = NULL;
 688 tree_node *domainlist_anchor   = NULL;
 689 int     domainlist_count       = 0;
 690 BOOL    dont_deliver           = FALSE;
 691 BOOL    dot_ends               = TRUE;
 692 BOOL    drop_cr                = FALSE;         /* No longer used */
 693 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 694
 695 BOOL    enable_dollar_recipients = FALSE;
 696 BOOL    envelope_to_remove     = TRUE;
 697 int     errno_quota            = ERRNO_QUOTA;
 698 uschar *errors_copy            = NULL;
 699 int     error_handling         = ERRORS_SENDER;
 700 uschar *errors_reply_to        = NULL;
 701 int     errors_sender_rc       = EXIT_FAILURE;
 702 #ifndef DISABLE_EVENT
 703 uschar *event_action             = NULL;        /* expansion for delivery events */
 704 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 705 int     event_defer_errno        = 0;
 706 const uschar *event_name         = NULL;        /* event name variable */
 707 #endif
 708
 709
 710 gid_t   exim_gid               = EXIM_GID;
 711 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 712 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 713                         "\0<---------------Space to patch exim_path->";
 714 uid_t   exim_uid               = EXIM_UID;
 715 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 716 int     expand_forbid          = 0;
 717 int     expand_nlength[EXPAND_MAXN+1];
 718 int     expand_nmax            = -1;
 719 uschar *expand_nstring[EXPAND_MAXN+1];
 720 BOOL    expand_string_forcedfail = FALSE;
 721 uschar *expand_string_message;
 722 BOOL    extract_addresses_remove_arguments = TRUE;
 723 uschar *extra_local_interfaces = NULL;
 724
 725 int     fake_response          = OK;
 726 uschar *fake_response_text     = US"Your message has been rejected but is "
 727                                    "being kept for evaluation.\nIf it was a "
 728                                    "legitimate message, it may still be "
 729                                    "delivered to the target recipient(s).";
 730 int     filter_n[FILTER_VARIABLE_COUNT];
 731 BOOL    filter_running         = FALSE;
 732 int     filter_sn[FILTER_VARIABLE_COUNT];
 733 int     filter_test            = FTEST_NONE;
 734 uschar *filter_test_sfile      = NULL;
 735 uschar *filter_test_ufile      = NULL;
 736 uschar *filter_thisaddress     = NULL;
 737 int     finduser_retries       = 0;
 738 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 739 uschar *freeze_tell            = NULL;
 740 uschar *freeze_tell_config     = NULL;
 741 uschar *fudged_queue_times     = US"";
 742
 743 uschar *gecos_name             = NULL;
 744 uschar *gecos_pattern          = NULL;
 745 rewrite_rule  *global_rewrite_rules = NULL;
 746
 747 uschar *headers_charset        = US HEADERS_CHARSET;
 748 int     header_insert_maxlen   = 64 * 1024;
 749 header_line  *header_last      = NULL;
 750 header_line  *header_list      = NULL;
 751 int     header_maxsize         = HEADER_MAXSIZE;
 752 int     header_line_maxsize    = 0;
 753
 754 header_name header_names[] = {
 755   { US"bcc",            3, TRUE,  htype_bcc },
 756   { US"cc",             2, TRUE,  htype_cc },
 757   { US"date",           4, TRUE,  htype_date },
 758   { US"delivery-date", 13, FALSE, htype_delivery_date },
 759   { US"envelope-to",   11, FALSE, htype_envelope_to },
 760   { US"from",           4, TRUE,  htype_from },
 761   { US"message-id",    10, TRUE,  htype_id },
 762   { US"received",       8, FALSE, htype_received },
 763   { US"reply-to",       8, FALSE, htype_reply_to },
 764   { US"return-path",   11, FALSE, htype_return_path },
 765   { US"sender",         6, TRUE,  htype_sender },
 766   { US"subject",        7, FALSE, htype_subject },
 767   { US"to",             2, TRUE,  htype_to }
 768 };
 769
 770 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 771
 772 BOOL    header_rewritten       = FALSE;
 773 uschar *helo_accept_junk_hosts = NULL;
 774 uschar *helo_allow_chars       = US"";
 775 uschar *helo_lookup_domains    = US"@ : @[]";
 776 uschar *helo_try_verify_hosts  = NULL;
 777 BOOL    helo_verified          = FALSE;
 778 BOOL    helo_verify_failed     = FALSE;
 779 uschar *helo_verify_hosts      = NULL;
 780 const uschar *hex_digits       = CUS"0123456789abcdef";
 781 uschar *hold_domains           = NULL;
 782 BOOL    host_checking          = FALSE;
 783 BOOL    host_checking_callout  = FALSE;
 784 uschar *host_data              = NULL;
 785 BOOL    host_find_failed_syntax= FALSE;
 786 uschar *host_lookup            = NULL;
 787 BOOL    host_lookup_deferred   = FALSE;
 788 BOOL    host_lookup_failed     = FALSE;
 789 uschar *host_lookup_order      = US"bydns:byaddr";
 790 uschar *host_lookup_msg        = US"";
 791 int     host_number            = 0;
 792 uschar *host_number_string     = NULL;
 793 uschar *host_reject_connection = NULL;
 794 tree_node *hostlist_anchor     = NULL;
 795 int     hostlist_count         = 0;
 796 uschar *hosts_treat_as_local   = NULL;
 797 uschar *hosts_connection_nolog = NULL;
 798
 799 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 800 BOOL    ignore_fromline_local  = FALSE;
 801 uschar *ignore_fromline_hosts  = NULL;
 802 BOOL    inetd_wait_mode        = FALSE;
 803 int     inetd_wait_timeout     = -1;
 804 uschar *initial_cwd            = NULL;
 805 uschar *interface_address      = NULL;
 806 int     interface_port         = -1;
 807 BOOL    is_inetd               = FALSE;
 808 uschar *iterate_item           = NULL;
 809
 810 int     journal_fd             = -1;
 811
 812 uschar *keep_environment       = NULL;
 813
 814 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 815
 816 uschar *eldap_dn               = NULL;
 817 int     load_average           = -2;
 818 BOOL    local_error_message    = FALSE;
 819 BOOL    local_from_check       = TRUE;
 820 uschar *local_from_prefix      = NULL;
 821 uschar *local_from_suffix      = NULL;
 822
 823 #if HAVE_IPV6
 824 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 825 #else
 826 uschar *local_interfaces       = US"0.0.0.0";
 827 #endif
 828
 829 uschar *local_scan_data        = NULL;
 830 int     local_scan_timeout     = 5*60;
 831 BOOL    local_sender_retain    = FALSE;
 832 gid_t   local_user_gid         = (gid_t)(-1);
 833 uid_t   local_user_uid         = (uid_t)(-1);
 834
 835 tree_node *localpartlist_anchor= NULL;
 836 int     localpartlist_count    = 0;
 837 uschar *log_buffer             = NULL;
 838
 839 int     log_default[]          = { /* for initializing log_selector */
 840   Li_acl_warn_skipped,
 841   Li_connection_reject,
 842   Li_delay_delivery,
 843   Li_dnslist_defer,
 844   Li_etrn,
 845   Li_host_lookup_failed,
 846   Li_lost_incoming_connection,
 847   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 848   Li_queue_run,
 849   Li_rejected_header,
 850   Li_retry_defer,
 851   Li_sender_verify_fail,
 852   Li_size_reject,
 853   Li_skip_delivery,
 854   Li_smtp_confirmation,
 855   Li_tls_certificate_verified,
 856   Li_tls_cipher,
 857   -1
 858 };
 859
 860 uschar *log_file_path          = US LOG_FILE_PATH
 861                            "\0<--------------Space to patch log_file_path->";
 862
 863 int     log_notall[]           = {
 864   -1
 865 };
 866 bit_table log_options[]        = { /* must be in alphabetical order */
 867   BIT_TABLE(L, 8bitmime),
 868   BIT_TABLE(L, acl_warn_skipped),
 869   BIT_TABLE(L, address_rewrite),
 870   BIT_TABLE(L, all),
 871   BIT_TABLE(L, all_parents),
 872   BIT_TABLE(L, arguments),
 873   BIT_TABLE(L, connection_reject),
 874   BIT_TABLE(L, delay_delivery),
 875   BIT_TABLE(L, deliver_time),
 876   BIT_TABLE(L, delivery_size),
 877   BIT_TABLE(L, dnslist_defer),
 878   BIT_TABLE(L, dnssec),
 879   BIT_TABLE(L, etrn),
 880   BIT_TABLE(L, host_lookup_failed),
 881   BIT_TABLE(L, ident_timeout),
 882   BIT_TABLE(L, incoming_interface),
 883   BIT_TABLE(L, incoming_port),
 884   BIT_TABLE(L, lost_incoming_connection),
 885   BIT_TABLE(L, outgoing_interface),
 886   BIT_TABLE(L, outgoing_port),
 887   BIT_TABLE(L, pid),
 888 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 889   BIT_TABLE(L, proxy),
 890 #endif
 891   BIT_TABLE(L, queue_run),
 892   BIT_TABLE(L, queue_time),
 893   BIT_TABLE(L, queue_time_overall),
 894   BIT_TABLE(L, received_recipients),
 895   BIT_TABLE(L, received_sender),
 896   BIT_TABLE(L, rejected_header),
 897   { US"rejected_headers", Li_rejected_header },
 898   BIT_TABLE(L, retry_defer),
 899   BIT_TABLE(L, return_path_on_delivery),
 900   BIT_TABLE(L, sender_on_delivery),
 901   BIT_TABLE(L, sender_verify_fail),
 902   BIT_TABLE(L, size_reject),
 903   BIT_TABLE(L, skip_delivery),
 904   BIT_TABLE(L, smtp_confirmation),
 905   BIT_TABLE(L, smtp_connection),
 906   BIT_TABLE(L, smtp_incomplete_transaction),
 907   BIT_TABLE(L, smtp_mailauth),
 908   BIT_TABLE(L, smtp_no_mail),
 909   BIT_TABLE(L, smtp_protocol_error),
 910   BIT_TABLE(L, smtp_syntax_error),
 911   BIT_TABLE(L, subject),
 912   BIT_TABLE(L, tls_certificate_verified),
 913   BIT_TABLE(L, tls_cipher),
 914   BIT_TABLE(L, tls_peerdn),
 915   BIT_TABLE(L, tls_sni),
 916   BIT_TABLE(L, unknown_in_list),
 917 };
 918 int     log_options_count      = nelem(log_options);
 919
 920 int     log_reject_target      = 0;
 921 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 922 uschar *log_selector_string    = NULL;
 923 FILE   *log_stderr             = NULL;
 924 BOOL    log_testing_mode       = FALSE;
 925 BOOL    log_timezone           = FALSE;
 926 uschar *login_sender_address   = NULL;
 927 uschar *lookup_dnssec_authenticated = NULL;
 928 int     lookup_open_max        = 25;
 929 uschar *lookup_value           = NULL;
 930
 931 macro_item  *macros            = NULL;
 932 macro_item  *mlast             = NULL;
 933 BOOL    macros_builtin_created = FALSE;
 934 uschar *mailstore_basename     = NULL;
 935 #ifdef WITH_CONTENT_SCAN
 936 uschar *malware_name           = NULL;  /* Virus Name */
 937 #endif
 938 int     max_received_linelength= 0;
 939 int     max_username_length    = 0;
 940 int     message_age            = 0;
 941 uschar *message_body           = NULL;
 942 uschar *message_body_end       = NULL;
 943 BOOL    message_body_newlines  = FALSE;
 944 int     message_body_size      = 0;
 945 int     message_body_visible   = 500;
 946 int     message_ended          = END_NOTSTARTED;
 947 uschar *message_headers        = NULL;
 948 uschar *message_id;
 949 uschar *message_id_domain      = NULL;
 950 uschar *message_id_text        = NULL;
 951 struct timeval message_id_tv   = { 0, 0 };
 952 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 953 uschar *message_id_external;
 954 int     message_linecount      = 0;
 955 BOOL    message_logs           = TRUE;
 956 int     message_size           = 0;
 957 uschar *message_size_limit     = US"50M";
 958 #ifdef SUPPORT_I18N
 959 BOOL    message_smtputf8       = FALSE;
 960 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 961 #endif
 962 uschar  message_subdir[2]      = { 0, 0 };
 963 uschar *message_reference      = NULL;
 964
 965 /* MIME ACL expandables */
 966 #ifdef WITH_CONTENT_SCAN
 967 int     mime_anomaly_level     = 0;
 968 const uschar *mime_anomaly_text      = NULL;
 969 uschar *mime_boundary          = NULL;
 970 uschar *mime_charset           = NULL;
 971 uschar *mime_content_description = NULL;
 972 uschar *mime_content_disposition = NULL;
 973 uschar *mime_content_id        = NULL;
 974 unsigned int mime_content_size = 0;
 975 uschar *mime_content_transfer_encoding = NULL;
 976 uschar *mime_content_type      = NULL;
 977 uschar *mime_decoded_filename  = NULL;
 978 uschar *mime_filename          = NULL;
 979 int     mime_is_multipart      = 0;
 980 int     mime_is_coverletter    = 0;
 981 int     mime_is_rfc822         = 0;
 982 int     mime_part_count        = -1;
 983 #endif
 984
 985 BOOL    mua_wrapper            = FALSE;
 986
 987 uid_t  *never_users            = NULL;
 988 #ifdef WITH_CONTENT_SCAN
 989 BOOL    no_mbox_unspool        = FALSE;
 990 #endif
 991 BOOL    no_multiline_responses = FALSE;
 992
 993 const int on                   = 1;     /* for setsockopt */
 994 const int off                  = 0;
 995
 996 uid_t   original_euid;
 997 gid_t   originator_gid;
 998 uschar *originator_login       = NULL;
 999 uschar *originator_name        = NULL;
1000 uid_t   originator_uid;
1001 uschar *override_local_interfaces = NULL;
1002 uschar *override_pid_file_path = NULL;
1003
1004 BOOL    parse_allow_group      = FALSE;
1005 BOOL    parse_found_group      = FALSE;
1006 uschar *percent_hack_domains   = NULL;
1007 uschar *pid_file_path          = US PID_FILE_PATH
1008                            "\0<--------------Space to patch pid_file_path->";
1009 BOOL    pipelining_enable      = TRUE;
1010 uschar *pipelining_advertise_hosts = US"*";
1011 BOOL    preserve_message_logs  = FALSE;
1012 uschar *primary_hostname       = NULL;
1013 BOOL    print_topbitchars      = FALSE;
1014 uschar  process_info[PROCESS_INFO_SIZE];
1015 int     process_info_len       = 0;
1016 uschar *process_log_path       = NULL;
1017 BOOL    prod_requires_admin    = TRUE;
1018
1019 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1020 uschar *hosts_proxy            = US"";
1021 uschar *proxy_external_address = US"";
1022 int     proxy_external_port    = 0;
1023 uschar *proxy_local_address    = US"";
1024 int     proxy_local_port       = 0;
1025 BOOL    proxy_session          = FALSE;
1026 BOOL    proxy_session_failed   = FALSE;
1027 #endif
1028
1029 uschar *prvscheck_address      = NULL;
1030 uschar *prvscheck_keynum       = NULL;
1031 uschar *prvscheck_result       = NULL;
1032
1033
1034 const uschar *qualify_domain_recipient = NULL;
1035 uschar *qualify_domain_sender  = NULL;
1036 BOOL    queue_2stage           = FALSE;
1037 uschar *queue_domains          = NULL;
1038 int     queue_interval         = -1;
1039 BOOL    queue_list_requires_admin = TRUE;
1040 uschar *queue_name             = US"";
1041 BOOL    queue_only             = FALSE;
1042 uschar *queue_only_file        = NULL;
1043 int     queue_only_load        = -1;
1044 BOOL    queue_only_load_latch  = TRUE;
1045 BOOL    queue_only_override    = TRUE;
1046 BOOL    queue_only_policy      = FALSE;
1047 BOOL    queue_run_first_delivery = FALSE;
1048 BOOL    queue_run_force        = FALSE;
1049 BOOL    queue_run_in_order     = FALSE;
1050 BOOL    queue_run_local        = FALSE;
1051 uschar *queue_run_max          = US"5";
1052 pid_t   queue_run_pid          = (pid_t)0;
1053 int     queue_run_pipe         = -1;
1054 BOOL    queue_running          = FALSE;
1055 BOOL    queue_smtp             = FALSE;
1056 uschar *queue_smtp_domains     = NULL;
1057
1058 unsigned int random_seed       = 0;
1059 tree_node *ratelimiters_cmd    = NULL;
1060 tree_node *ratelimiters_conn   = NULL;
1061 tree_node *ratelimiters_mail   = NULL;
1062 uschar *raw_active_hostname    = NULL;
1063 uschar *raw_sender             = NULL;
1064 uschar **raw_recipients        = NULL;
1065 int     raw_recipients_count   = 0;
1066
1067 int     rcpt_count             = 0;
1068 int     rcpt_fail_count        = 0;
1069 int     rcpt_defer_count       = 0;
1070 gid_t   real_gid;
1071 uid_t   real_uid;
1072 BOOL    really_exim            = TRUE;
1073 BOOL    receive_call_bombout   = FALSE;
1074 int     receive_linecount      = 0;
1075 int     receive_messagecount   = 0;
1076 int     receive_timeout        = 0;
1077 int     received_count         = 0;
1078 uschar *received_for           = NULL;
1079
1080 /*  This is the default text for Received headers generated by Exim. The
1081 date  will be automatically added on the end. */
1082
1083 uschar *received_header_text   = US
1084      "Received: "
1085      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1086      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1087      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1088      "by $primary_hostname "
1089      "${if def:received_protocol {with $received_protocol}} "
1090      #ifdef SUPPORT_TLS
1091      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1092      #endif
1093      "(Exim $version_number)\n\t"
1094      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1095      "id $message_exim_id"
1096      "${if def:received_for {\n\tfor $received_for}}"
1097      "\0<---------------Space to patch received_header_text->";
1098
1099 int     received_headers_max   = 30;
1100 uschar *received_protocol      = NULL;
1101 int     received_time          = 0;
1102 uschar *recipient_data         = NULL;
1103 uschar *recipient_unqualified_hosts = NULL;
1104 uschar *recipient_verify_failure = NULL;
1105 int     recipients_count       = 0;
1106 BOOL    recipients_discarded   = FALSE;
1107 recipient_item  *recipients_list = NULL;
1108 int     recipients_list_max    = 0;
1109 int     recipients_max         = 0;
1110 BOOL    recipients_max_reject  = FALSE;
1111 const pcre *regex_AUTH         = NULL;
1112 const pcre *regex_check_dns_names = NULL;
1113 const pcre *regex_From         = NULL;
1114 const pcre *regex_IGNOREQUOTA  = NULL;
1115 const pcre *regex_PIPELINING   = NULL;
1116 const pcre *regex_SIZE         = NULL;
1117 const pcre *regex_ismsgid      = NULL;
1118 const pcre *regex_smtp_code    = NULL;
1119 uschar *regex_vars[REGEX_VARS];
1120 #ifdef WHITELIST_D_MACROS
1121 const pcre *regex_whitelisted_macro = NULL;
1122 #endif
1123 #ifdef WITH_CONTENT_SCAN
1124 uschar *regex_match_string     = NULL;
1125 #endif
1126 int     remote_delivery_count  = 0;
1127 int     remote_max_parallel    = 2;
1128 uschar *remote_sort_domains    = NULL;
1129 int     retry_data_expire      = 7*24*60*60;
1130 int     retry_interval_max     = 24*60*60;
1131 int     retry_maximum_timeout  = 0;        /* set from retry config */
1132 retry_config  *retries         = NULL;
1133 uschar *return_path            = NULL;
1134 BOOL    return_path_remove     = TRUE;
1135 int     rewrite_existflags     = 0;
1136 uschar *rfc1413_hosts          = US"@[]";
1137 int     rfc1413_query_timeout  = 0;
1138 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1139 uid_t   root_gid               = ROOT_GID;
1140 uid_t   root_uid               = ROOT_UID;
1141
1142 router_instance  *routers  = NULL;
1143 router_instance  router_defaults = {
1144     NULL,                      /* chain pointer */
1145     NULL,                      /* name */
1146     NULL,                      /* info */
1147     NULL,                      /* private options block pointer */
1148     NULL,                      /* driver name */
1149
1150     NULL,                      /* address_data */
1151 #ifdef EXPERIMENTAL_BRIGHTMAIL
1152     NULL,                      /* bmi_rule */
1153 #endif
1154     NULL,                      /* cannot_route_message */
1155     NULL,                      /* condition */
1156     NULL,                      /* current_directory */
1157     NULL,                      /* debug_string */
1158     NULL,                      /* domains */
1159     NULL,                      /* errors_to */
1160     NULL,                      /* expand_gid */
1161     NULL,                      /* expand_uid */
1162     NULL,                      /* expand_more */
1163     NULL,                      /* expand_unseen */
1164     NULL,                      /* extra_headers */
1165     NULL,                      /* fallback_hosts */
1166     NULL,                      /* home_directory */
1167     NULL,                      /* ignore_target_hosts */
1168     NULL,                      /* local_parts */
1169     NULL,                      /* pass_router_name */
1170     NULL,                      /* prefix */
1171     NULL,                      /* redirect_router_name */
1172     NULL,                      /* remove_headers */
1173     NULL,                      /* require_files */
1174     NULL,                      /* router_home_directory */
1175     US"freeze",                /* self */
1176     NULL,                      /* senders */
1177     NULL,                      /* suffix */
1178     NULL,                      /* translate_ip_address */
1179     NULL,                      /* transport_name */
1180
1181     TRUE,                      /* address_test */
1182 #ifdef EXPERIMENTAL_BRIGHTMAIL
1183     FALSE,                     /* bmi_deliver_alternate */
1184     FALSE,                     /* bmi_deliver_default */
1185     FALSE,                     /* bmi_dont_deliver */
1186 #endif
1187     TRUE,                      /* expn */
1188     FALSE,                     /* caseful_local_part */
1189     FALSE,                     /* check_local_user */
1190     FALSE,                     /* disable_logging */
1191     FALSE,                     /* fail_verify_recipient */
1192     FALSE,                     /* fail_verify_sender */
1193     FALSE,                     /* gid_set */
1194     FALSE,                     /* initgroups */
1195     TRUE_UNSET,                /* log_as_local */
1196     TRUE,                      /* more */
1197     FALSE,                     /* pass_on_timeout */
1198     FALSE,                     /* prefix_optional */
1199     TRUE,                      /* repeat_use */
1200     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1201     FALSE,                     /* same_domain_copy_routing */
1202     FALSE,                     /* self_rewrite */
1203     FALSE,                     /* suffix_optional */
1204     FALSE,                     /* verify_only */
1205     TRUE,                      /* verify_recipient */
1206     TRUE,                      /* verify_sender */
1207     FALSE,                     /* uid_set */
1208     FALSE,                     /* unseen */
1209     FALSE,                     /* dsn_lasthop */
1210
1211     self_freeze,               /* self_code */
1212     (uid_t)(-1),               /* uid */
1213     (gid_t)(-1),               /* gid */
1214
1215     NULL,                      /* fallback_hostlist */
1216     NULL,                      /* transport instance */
1217     NULL,                      /* pass_router */
1218     NULL,                      /* redirect_router */
1219
1220     { NULL, NULL },            /* dnssec_domains {require,request} */
1221 };
1222
1223 uschar *router_name            = NULL;
1224
1225 ip_address_item *running_interfaces = NULL;
1226 BOOL    running_in_test_harness = FALSE;
1227
1228 /* This is a weird one. The following string gets patched in the binary by the
1229 script that sets up a copy of Exim for running in the test harness. It seems
1230 that compilers are now clever, and share constant strings if they can.
1231 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1232 make use of the end of this string in order to save space. So the patching then
1233 wrecks this. We defeat this optimization by adding some additional characters
1234 onto the end of the string. */
1235
1236 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1237
1238 int     runrc                  = 0;
1239
1240 uschar *search_error_message   = NULL;
1241 BOOL    search_find_defer      = FALSE;
1242 uschar *self_hostname          = NULL;
1243 uschar *sender_address         = NULL;
1244 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1245 uschar *sender_address_data    = NULL;
1246 BOOL    sender_address_forced  = FALSE;
1247 uschar *sender_address_unrewritten = NULL;
1248 uschar *sender_data            = NULL;
1249 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1250 uschar *sender_fullhost        = NULL;
1251 BOOL    sender_helo_dnssec     = FALSE;
1252 uschar *sender_helo_name       = NULL;
1253 uschar **sender_host_aliases   = &no_aliases;
1254 uschar *sender_host_address    = NULL;
1255 uschar *sender_host_authenticated = NULL;
1256 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1257 BOOL    sender_host_dnssec     = FALSE;
1258 uschar *sender_host_name       = NULL;
1259 int     sender_host_port       = 0;
1260 BOOL    sender_host_notsocket  = FALSE;
1261 BOOL    sender_host_unknown    = FALSE;
1262 uschar *sender_ident           = NULL;
1263 BOOL    sender_local           = FALSE;
1264 BOOL    sender_name_forced     = FALSE;
1265 uschar *sender_rate            = NULL;
1266 uschar *sender_rate_limit      = NULL;
1267 uschar *sender_rate_period     = NULL;
1268 uschar *sender_rcvhost         = NULL;
1269 BOOL    sender_set_untrusted   = FALSE;
1270 uschar *sender_unqualified_hosts = NULL;
1271 uschar *sender_verify_failure = NULL;
1272 address_item *sender_verified_list  = NULL;
1273 address_item *sender_verified_failed = NULL;
1274 int     sender_verified_rc     = -1;
1275 BOOL    sender_verified_responded = FALSE;
1276 uschar *sending_ip_address     = NULL;
1277 int     sending_port           = -1;
1278 SIGNAL_BOOL sigalrm_seen       = FALSE;
1279 uschar **sighup_argv           = NULL;
1280 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1281 int     smtp_accept_count      = 0;
1282 BOOL    smtp_accept_keepalive  = TRUE;
1283 int     smtp_accept_max        = 20;
1284 int     smtp_accept_max_nonmail= 10;
1285 uschar *smtp_accept_max_nonmail_hosts = US"*";
1286 int     smtp_accept_max_per_connection = 1000;
1287 uschar *smtp_accept_max_per_host = NULL;
1288 int     smtp_accept_queue      = 0;
1289 int     smtp_accept_queue_per_connection = 10;
1290 int     smtp_accept_reserve    = 0;
1291 uschar *smtp_active_hostname   = NULL;
1292 BOOL    smtp_authenticated     = FALSE;
1293 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1294                              "Exim $version_number $tod_full"
1295                              "\0<---------------Space to patch smtp_banner->";
1296 BOOL    smtp_batched_input     = FALSE;
1297 BOOL    smtp_check_spool_space = TRUE;
1298 int     smtp_ch_index          = 0;
1299 uschar *smtp_cmd_argument      = NULL;
1300 uschar *smtp_cmd_buffer        = NULL;
1301 time_t  smtp_connection_start  = 0;
1302 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1303 int     smtp_connect_backlog   = 20;
1304 double  smtp_delay_mail        = 0.0;
1305 double  smtp_delay_rcpt        = 0.0;
1306 BOOL    smtp_enforce_sync      = TRUE;
1307 FILE   *smtp_in                = NULL;
1308 BOOL    smtp_input             = FALSE;
1309 int     smtp_load_reserve      = -1;
1310 int     smtp_mailcmd_count     = 0;
1311 FILE   *smtp_out               = NULL;
1312 uschar *smtp_etrn_command      = NULL;
1313 BOOL    smtp_etrn_serialize    = TRUE;
1314 int     smtp_max_synprot_errors= 3;
1315 int     smtp_max_unknown_commands = 3;
1316 uschar *smtp_notquit_reason    = NULL;
1317 uschar *smtp_ratelimit_hosts   = NULL;
1318 uschar *smtp_ratelimit_mail    = NULL;
1319 uschar *smtp_ratelimit_rcpt    = NULL;
1320 uschar *smtp_read_error        = US"";
1321 int     smtp_receive_timeout   = 5*60;
1322 uschar *smtp_receive_timeout_s = NULL;
1323 uschar *smtp_reserve_hosts     = NULL;
1324 BOOL    smtp_return_error_details = FALSE;
1325 int     smtp_rlm_base          = 0;
1326 double  smtp_rlm_factor        = 0.0;
1327 int     smtp_rlm_limit         = 0;
1328 int     smtp_rlm_threshold     = INT_MAX;
1329 int     smtp_rlr_base          = 0;
1330 double  smtp_rlr_factor        = 0.0;
1331 int     smtp_rlr_limit         = 0;
1332 int     smtp_rlr_threshold     = INT_MAX;
1333 unsigned smtp_peer_options     = 0;
1334 unsigned smtp_peer_options_wrap= 0;
1335 #ifdef SUPPORT_I18N
1336 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1337 #endif
1338
1339 #ifdef WITH_CONTENT_SCAN
1340 uschar *spamd_address          = US"127.0.0.1 783";
1341 uschar *spam_bar               = NULL;
1342 uschar *spam_report            = NULL;
1343 uschar *spam_action            = NULL;
1344 uschar *spam_score             = NULL;
1345 uschar *spam_score_int         = NULL;
1346 #endif
1347 #ifdef EXPERIMENTAL_SPF
1348 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1349 uschar *spf_header_comment     = NULL;
1350 uschar *spf_received           = NULL;
1351 uschar *spf_result             = NULL;
1352 uschar *spf_smtp_comment       = NULL;
1353 #endif
1354
1355 BOOL    split_spool_directory  = FALSE;
1356 uschar *spool_directory        = US SPOOL_DIRECTORY
1357                            "\0<--------------Space to patch spool_directory->";
1358 #ifdef EXPERIMENTAL_SRS
1359 uschar *srs_config             = NULL;
1360 uschar *srs_db_address         = NULL;
1361 uschar *srs_db_key             = NULL;
1362 int     srs_hashlength         = 6;
1363 int     srs_hashmin            = -1;
1364 int     srs_maxage             = 31;
1365 uschar *srs_orig_recipient     = NULL;
1366 uschar *srs_orig_sender        = NULL;
1367 uschar *srs_recipient          = NULL;
1368 uschar *srs_secrets            = NULL;
1369 uschar *srs_status             = NULL;
1370 BOOL    srs_usehash            = TRUE;
1371 BOOL    srs_usetimestamp       = TRUE;
1372 #endif
1373 BOOL    strict_acl_vars        = FALSE;
1374 int     string_datestamp_offset= -1;
1375 int     string_datestamp_length= 0;
1376 int     string_datestamp_type  = -1;
1377 BOOL    strip_excess_angle_brackets = FALSE;
1378 BOOL    strip_trailing_dot     = FALSE;
1379 uschar *submission_domain      = NULL;
1380 BOOL    submission_mode        = FALSE;
1381 uschar *submission_name        = NULL;
1382 BOOL    suppress_local_fixups  = FALSE;
1383 BOOL    suppress_local_fixups_default = FALSE;
1384 BOOL    synchronous_delivery   = FALSE;
1385 BOOL    syslog_duplication     = TRUE;
1386 int     syslog_facility        = LOG_MAIL;
1387 BOOL    syslog_pid             = TRUE;
1388 uschar *syslog_processname     = US"exim";
1389 BOOL    syslog_timestamp       = TRUE;
1390 uschar *system_filter          = NULL;
1391
1392 uschar *system_filter_directory_transport = NULL;
1393 uschar *system_filter_file_transport = NULL;
1394 uschar *system_filter_pipe_transport = NULL;
1395 uschar *system_filter_reply_transport = NULL;
1396
1397 gid_t   system_filter_gid      = 0;
1398 BOOL    system_filter_gid_set  = FALSE;
1399 uid_t   system_filter_uid      = (uid_t)-1;
1400 BOOL    system_filter_uid_set  = FALSE;
1401 BOOL    system_filtering       = FALSE;
1402
1403 BOOL    tcp_fastopen_ok        = FALSE;
1404 BOOL    tcp_nodelay            = TRUE;
1405 #ifdef USE_TCP_WRAPPERS
1406 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1407 #endif
1408 int     test_harness_load_avg  = 0;
1409 int     thismessage_size_limit = 0;
1410 int     timeout_frozen_after   = 0;
1411 BOOL    timestamps_utc         = FALSE;
1412
1413 transport_instance  *transports = NULL;
1414
1415 transport_instance  transport_defaults = {
1416     NULL,                     /* chain pointer */
1417     NULL,                     /* name */
1418     NULL,                     /* info */
1419     NULL,                     /* private options block pointer */
1420     NULL,                     /* driver name */
1421     NULL,                     /* setup entry point */
1422     1,                        /* batch_max */
1423     NULL,                     /* batch_id */
1424     NULL,                     /* home_dir */
1425     NULL,                     /* current_dir */
1426     NULL,                     /* expand-multi-domain */
1427     TRUE,                     /* multi-domain */
1428     FALSE,                    /* overrides_hosts */
1429     100,                      /* max_addresses */
1430     500,                      /* connection_max_messages */
1431     FALSE,                    /* deliver_as_creator */
1432     FALSE,                    /* disable_logging */
1433     FALSE,                    /* initgroups */
1434     FALSE,                    /* uid_set */
1435     FALSE,                    /* gid_set */
1436     (uid_t)(-1),              /* uid */
1437     (gid_t)(-1),              /* gid */
1438     NULL,                     /* expand_uid */
1439     NULL,                     /* expand_gid */
1440     NULL,                     /* warn_message */
1441     NULL,                     /* shadow */
1442     NULL,                     /* shadow_condition */
1443     NULL,                     /* filter_command */
1444     NULL,                     /* add_headers */
1445     NULL,                     /* remove_headers */
1446     NULL,                     /* return_path */
1447     NULL,                     /* debug_string */
1448     NULL,                     /* max_parallel */
1449     NULL,                     /* message_size_limit */
1450     NULL,                     /* headers_rewrite */
1451     NULL,                     /* rewrite_rules */
1452     0,                        /* rewrite_existflags */
1453     300,                      /* filter_timeout */
1454     FALSE,                    /* body_only */
1455     FALSE,                    /* delivery_date_add */
1456     FALSE,                    /* envelope_to_add */
1457     FALSE,                    /* headers_only */
1458     FALSE,                    /* rcpt_include_affixes */
1459     FALSE,                    /* return_path_add */
1460     FALSE,                    /* return_output */
1461     FALSE,                    /* return_fail_output */
1462     FALSE,                    /* log_output */
1463     FALSE,                    /* log_fail_output */
1464     FALSE,                    /* log_defer_output */
1465     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1466                                  1 nor 0 so can detect unset */
1467 #ifndef DISABLE_EVENT
1468    ,NULL                      /* event_action */
1469 #endif
1470 };
1471
1472 int     transport_count;
1473 uschar *transport_name          = NULL;
1474 int     transport_newlines;
1475 const uschar **transport_filter_argv  = NULL;
1476 int     transport_filter_timeout;
1477 BOOL    transport_filter_timed_out = FALSE;
1478 int     transport_write_timeout= 0;
1479
1480 tree_node  *tree_dns_fails     = NULL;
1481 tree_node  *tree_duplicates    = NULL;
1482 tree_node  *tree_nonrecipients = NULL;
1483 tree_node  *tree_unusable      = NULL;
1484
1485 BOOL    trusted_caller         = FALSE;
1486 BOOL    trusted_config         = TRUE;
1487 gid_t  *trusted_groups         = NULL;
1488 uid_t  *trusted_users          = NULL;
1489 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1490
1491 uschar *unknown_login          = NULL;
1492 uschar *unknown_username       = NULL;
1493 uschar *untrusted_set_sender   = NULL;
1494
1495 /*  A regex for matching a "From_" line in an incoming message, in the form
1496
1497     From ph10 Fri Jan  5 12:35 GMT 1996
1498
1499 which  the "mail" commands send to the MTA (undocumented, of course), or in
1500 the  form
1501
1502     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1503
1504 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1505 Because  of variations in time formats, just match up to the minutes. That
1506 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1507 so  just require one digit for hours and minutes. The weekday is also absent
1508 in  some forms. */
1509
1510 uschar *uucp_from_pattern      = US
1511    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1512    "(?:"                                          /* Non-extracting bracket */
1513    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1514    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1515    ")"                                            /* End alternation */
1516    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1517
1518 uschar *uucp_from_sender       = US"$1";
1519
1520 uschar *verify_mode            = NULL;
1521 uschar *version_copyright      =
1522  US"Copyright (c) University of Cambridge, 1995 - 2017\n"
1523    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017";
1524 uschar *version_date           = US"?";
1525 uschar *version_cnumber        = US"????";
1526 uschar *version_string         = US"?";
1527
1528 uschar *warn_message_file      = NULL;
1529 int     warning_count          = 0;
1530 uschar *warnmsg_delay          = NULL;
1531 uschar *warnmsg_recipients     = NULL;
1532 BOOL    write_rejectlog        = TRUE;
1533
1534
1535 /*  End of globals.c */