src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2016 */
   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 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"prime256v1";
 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)(void)  = stdin_getc;
 187 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 188 int (*receive_getc)(void)      = 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       = 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
 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 uschar *config_filename        = NULL;
 512 int     config_lineno          = 0;
 513 #ifdef CONFIGURE_GROUP
 514 gid_t   config_gid             = CONFIGURE_GROUP;
 515 #endif
 516 uschar *config_main_filelist   = US CONFIGURE_FILE
 517                          "\0<-----------Space to patch configure_filename->";
 518 uschar *config_main_filename   = NULL;
 519 uschar *config_main_directory  = NULL;
 520
 521 #ifdef CONFIGURE_OWNER
 522 uid_t   config_uid             = CONFIGURE_OWNER;
 523 #endif
 524
 525 int     connection_max_messages= -1;
 526 uschar *continue_hostname      = NULL;
 527 uschar *continue_host_address  = NULL;
 528 BOOL    continue_more          = FALSE;
 529 int     continue_sequence      = 1;
 530 uschar *continue_transport     = NULL;
 531
 532 uschar *csa_status             = NULL;
 533 cut_t   cutthrough = {
 534   FALSE,                                /* delivery: when to attempt */
 535   -1,                                   /* fd: open connection */
 536   0,                                    /* nrcpt: number of addresses */
 537 };
 538
 539 BOOL    daemon_listen          = FALSE;
 540 uschar *daemon_smtp_port       = US"smtp";
 541 int     daemon_startup_retries = 9;
 542 int     daemon_startup_sleep   = 30;
 543
 544 #ifdef EXPERIMENTAL_DCC
 545 BOOL    dcc_direct_add_header  = FALSE;
 546 uschar *dcc_header             = NULL;
 547 uschar *dcc_result             = NULL;
 548 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 549 uschar *dccifd_options         = US"header";
 550 #endif
 551
 552 BOOL    debug_daemon           = FALSE;
 553 int     debug_fd               = -1;
 554 FILE   *debug_file             = NULL;
 555 int     debug_notall[]         = {
 556   Di_memory,
 557   -1
 558 };
 559 bit_table debug_options[]      = { /* must be in alphabetical order */
 560   BIT_TABLE(D, acl),
 561   BIT_TABLE(D, all),
 562   BIT_TABLE(D, auth),
 563   BIT_TABLE(D, deliver),
 564   BIT_TABLE(D, dns),
 565   BIT_TABLE(D, dnsbl),
 566   BIT_TABLE(D, exec),
 567   BIT_TABLE(D, expand),
 568   BIT_TABLE(D, filter),
 569   BIT_TABLE(D, hints_lookup),
 570   BIT_TABLE(D, host_lookup),
 571   BIT_TABLE(D, ident),
 572   BIT_TABLE(D, interface),
 573   BIT_TABLE(D, lists),
 574   BIT_TABLE(D, load),
 575   BIT_TABLE(D, local_scan),
 576   BIT_TABLE(D, lookup),
 577   BIT_TABLE(D, memory),
 578   BIT_TABLE(D, pid),
 579   BIT_TABLE(D, process_info),
 580   BIT_TABLE(D, queue_run),
 581   BIT_TABLE(D, receive),
 582   BIT_TABLE(D, resolver),
 583   BIT_TABLE(D, retry),
 584   BIT_TABLE(D, rewrite),
 585   BIT_TABLE(D, route),
 586   BIT_TABLE(D, timestamp),
 587   BIT_TABLE(D, tls),
 588   BIT_TABLE(D, transport),
 589   BIT_TABLE(D, uid),
 590   BIT_TABLE(D, verify),
 591 };
 592 int     debug_options_count    = nelem(debug_options);
 593
 594 unsigned int debug_selector    = 0;
 595 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 596 uschar *delay_warning_condition=
 597   US"${if or {"
 598             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 599             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 600             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 601             "} {no}{yes}}";
 602 BOOL    delivery_date_remove   = TRUE;
 603 uschar *deliver_address_data   = NULL;
 604 int     deliver_datafile       = -1;
 605 const uschar *deliver_domain   = NULL;
 606 uschar *deliver_domain_data    = NULL;
 607 const uschar *deliver_domain_orig = NULL;
 608 const uschar *deliver_domain_parent = NULL;
 609 BOOL    deliver_drop_privilege = FALSE;
 610 BOOL    deliver_firsttime      = FALSE;
 611 BOOL    deliver_force          = FALSE;
 612 BOOL    deliver_freeze         = FALSE;
 613 time_t  deliver_frozen_at      = 0;
 614 uschar *deliver_home           = NULL;
 615 const uschar *deliver_host     = NULL;
 616 const uschar *deliver_host_address = NULL;
 617 int     deliver_host_port      = 0;
 618 uschar *deliver_in_buffer      = NULL;
 619 ino_t   deliver_inode          = 0;
 620 uschar *deliver_localpart      = NULL;
 621 uschar *deliver_localpart_data = NULL;
 622 uschar *deliver_localpart_orig = NULL;
 623 uschar *deliver_localpart_parent = NULL;
 624 uschar *deliver_localpart_prefix = NULL;
 625 uschar *deliver_localpart_suffix = NULL;
 626 BOOL    deliver_force_thaw     = FALSE;
 627 BOOL    deliver_manual_thaw    = FALSE;
 628 uschar *deliver_out_buffer     = NULL;
 629 int     deliver_queue_load_max = -1;
 630 address_item  *deliver_recipients = NULL;
 631 uschar *deliver_selectstring   = NULL;
 632 BOOL    deliver_selectstring_regex = FALSE;
 633 uschar *deliver_selectstring_sender = NULL;
 634 BOOL    deliver_selectstring_sender_regex = FALSE;
 635 BOOL    disable_callout_flush  = FALSE;
 636 BOOL    disable_delay_flush    = FALSE;
 637 #ifdef ENABLE_DISABLE_FSYNC
 638 BOOL    disable_fsync          = FALSE;
 639 #endif
 640 BOOL    disable_ipv6           = FALSE;
 641 BOOL    disable_logging        = FALSE;
 642
 643 #ifndef DISABLE_DKIM
 644 BOOL    dkim_collect_input       = FALSE;
 645 uschar *dkim_cur_signer          = NULL;
 646 BOOL    dkim_disable_verify      = FALSE;
 647 int     dkim_key_length          = 0;
 648 uschar *dkim_signers             = NULL;
 649 uschar *dkim_signing_domain      = NULL;
 650 uschar *dkim_signing_selector    = NULL;
 651 uschar *dkim_verify_signers      = US"$dkim_signers";
 652 #endif
 653 #ifdef EXPERIMENTAL_DMARC
 654 BOOL    dmarc_has_been_checked  = FALSE;
 655 uschar *dmarc_ar_header         = NULL;
 656 uschar *dmarc_domain_policy     = NULL;
 657 uschar *dmarc_forensic_sender   = NULL;
 658 uschar *dmarc_history_file      = NULL;
 659 uschar *dmarc_status            = NULL;
 660 uschar *dmarc_status_text       = NULL;
 661 uschar *dmarc_tld_file          = NULL;
 662 uschar *dmarc_used_domain       = NULL;
 663 BOOL    dmarc_disable_verify    = FALSE;
 664 BOOL    dmarc_enable_forensic   = FALSE;
 665 #endif
 666
 667 uschar *dns_again_means_nonexist = NULL;
 668 int     dns_csa_search_limit   = 5;
 669 BOOL    dns_csa_use_reverse    = TRUE;
 670 #ifdef EXPERIMENTAL_DANE
 671 int     dns_dane_ok            = -1;
 672 #endif
 673 uschar *dns_ipv4_lookup        = NULL;
 674 int     dns_retrans            = 0;
 675 int     dns_retry              = 0;
 676 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 677 uschar *dns_trust_aa           = NULL;
 678 int     dns_use_edns0          = -1; /* <0 = not coerced */
 679 uschar *dnslist_domain         = NULL;
 680 uschar *dnslist_matched        = NULL;
 681 uschar *dnslist_text           = NULL;
 682 uschar *dnslist_value          = NULL;
 683 tree_node *domainlist_anchor   = NULL;
 684 int     domainlist_count       = 0;
 685 BOOL    dont_deliver           = FALSE;
 686 BOOL    dot_ends               = TRUE;
 687 BOOL    drop_cr                = FALSE;         /* No longer used */
 688 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 689
 690 BOOL    enable_dollar_recipients = FALSE;
 691 BOOL    envelope_to_remove     = TRUE;
 692 int     errno_quota            = ERRNO_QUOTA;
 693 uschar *errors_copy            = NULL;
 694 int     error_handling         = ERRORS_SENDER;
 695 uschar *errors_reply_to        = NULL;
 696 int     errors_sender_rc       = EXIT_FAILURE;
 697 #ifndef DISABLE_EVENT
 698 uschar *event_action             = NULL;        /* expansion for delivery events */
 699 uschar *event_data               = NULL;        /* auxilary data variable for event */
 700 int     event_defer_errno        = 0;
 701 const uschar *event_name         = NULL;        /* event name variable */
 702 #endif
 703
 704
 705 gid_t   exim_gid               = EXIM_GID;
 706 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 707 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 708                         "\0<---------------Space to patch exim_path->";
 709 uid_t   exim_uid               = EXIM_UID;
 710 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 711 int     expand_forbid          = 0;
 712 int     expand_nlength[EXPAND_MAXN+1];
 713 int     expand_nmax            = -1;
 714 uschar *expand_nstring[EXPAND_MAXN+1];
 715 BOOL    expand_string_forcedfail = FALSE;
 716 uschar *expand_string_message;
 717 BOOL    extract_addresses_remove_arguments = TRUE;
 718 uschar *extra_local_interfaces = NULL;
 719
 720 int     fake_response          = OK;
 721 uschar *fake_response_text     = US"Your message has been rejected but is "
 722                                    "being kept for evaluation.\nIf it was a "
 723                                    "legitimate message, it may still be "
 724                                    "delivered to the target recipient(s).";
 725 int     filter_n[FILTER_VARIABLE_COUNT];
 726 BOOL    filter_running         = FALSE;
 727 int     filter_sn[FILTER_VARIABLE_COUNT];
 728 int     filter_test            = FTEST_NONE;
 729 uschar *filter_test_sfile      = NULL;
 730 uschar *filter_test_ufile      = NULL;
 731 uschar *filter_thisaddress     = NULL;
 732 int     finduser_retries       = 0;
 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 *initial_cwd            = NULL;
 800 uschar *interface_address      = NULL;
 801 int     interface_port         = -1;
 802 BOOL    is_inetd               = FALSE;
 803 uschar *iterate_item           = NULL;
 804
 805 int     journal_fd             = -1;
 806
 807 uschar *keep_environment       = NULL;
 808
 809 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 810
 811 uschar *eldap_dn               = NULL;
 812 int     load_average           = -2;
 813 BOOL    local_error_message    = FALSE;
 814 BOOL    local_from_check       = TRUE;
 815 uschar *local_from_prefix      = NULL;
 816 uschar *local_from_suffix      = NULL;
 817
 818 #if HAVE_IPV6
 819 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 820 #else
 821 uschar *local_interfaces       = US"0.0.0.0";
 822 #endif
 823
 824 uschar *local_scan_data        = NULL;
 825 int     local_scan_timeout     = 5*60;
 826 BOOL    local_sender_retain    = FALSE;
 827 gid_t   local_user_gid         = (gid_t)(-1);
 828 uid_t   local_user_uid         = (uid_t)(-1);
 829
 830 tree_node *localpartlist_anchor= NULL;
 831 int     localpartlist_count    = 0;
 832 uschar *log_buffer             = NULL;
 833
 834 int     log_default[]          = { /* for initializing log_selector */
 835   Li_acl_warn_skipped,
 836   Li_connection_reject,
 837   Li_delay_delivery,
 838   Li_dnslist_defer,
 839   Li_etrn,
 840   Li_host_lookup_failed,
 841   Li_lost_incoming_connection,
 842   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 843   Li_queue_run,
 844   Li_rejected_header,
 845   Li_retry_defer,
 846   Li_sender_verify_fail,
 847   Li_size_reject,
 848   Li_skip_delivery,
 849   Li_smtp_confirmation,
 850   Li_tls_certificate_verified,
 851   Li_tls_cipher,
 852   -1
 853 };
 854
 855 uschar *log_file_path          = US LOG_FILE_PATH
 856                            "\0<--------------Space to patch log_file_path->";
 857
 858 int     log_notall[]           = {
 859   -1
 860 };
 861 bit_table log_options[]        = { /* must be in alphabetical order */
 862   BIT_TABLE(L, 8bitmime),
 863   BIT_TABLE(L, acl_warn_skipped),
 864   BIT_TABLE(L, address_rewrite),
 865   BIT_TABLE(L, all),
 866   BIT_TABLE(L, all_parents),
 867   BIT_TABLE(L, arguments),
 868   BIT_TABLE(L, connection_reject),
 869   BIT_TABLE(L, delay_delivery),
 870   BIT_TABLE(L, deliver_time),
 871   BIT_TABLE(L, delivery_size),
 872   BIT_TABLE(L, dnslist_defer),
 873   BIT_TABLE(L, dnssec),
 874   BIT_TABLE(L, etrn),
 875   BIT_TABLE(L, host_lookup_failed),
 876   BIT_TABLE(L, ident_timeout),
 877   BIT_TABLE(L, incoming_interface),
 878   BIT_TABLE(L, incoming_port),
 879   BIT_TABLE(L, lost_incoming_connection),
 880   BIT_TABLE(L, outgoing_interface),
 881   BIT_TABLE(L, outgoing_port),
 882   BIT_TABLE(L, pid),
 883 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 884   BIT_TABLE(L, proxy),
 885 #endif
 886   BIT_TABLE(L, queue_run),
 887   BIT_TABLE(L, queue_time),
 888   BIT_TABLE(L, queue_time_overall),
 889   BIT_TABLE(L, received_recipients),
 890   BIT_TABLE(L, received_sender),
 891   BIT_TABLE(L, rejected_header),
 892   { US"rejected_headers", Li_rejected_header },
 893   BIT_TABLE(L, retry_defer),
 894   BIT_TABLE(L, return_path_on_delivery),
 895   BIT_TABLE(L, sender_on_delivery),
 896   BIT_TABLE(L, sender_verify_fail),
 897   BIT_TABLE(L, size_reject),
 898   BIT_TABLE(L, skip_delivery),
 899   BIT_TABLE(L, smtp_confirmation),
 900   BIT_TABLE(L, smtp_connection),
 901   BIT_TABLE(L, smtp_incomplete_transaction),
 902   BIT_TABLE(L, smtp_mailauth),
 903   BIT_TABLE(L, smtp_no_mail),
 904   BIT_TABLE(L, smtp_protocol_error),
 905   BIT_TABLE(L, smtp_syntax_error),
 906   BIT_TABLE(L, subject),
 907   BIT_TABLE(L, tls_certificate_verified),
 908   BIT_TABLE(L, tls_cipher),
 909   BIT_TABLE(L, tls_peerdn),
 910   BIT_TABLE(L, tls_sni),
 911   BIT_TABLE(L, unknown_in_list),
 912 };
 913 int     log_options_count      = nelem(log_options);
 914
 915 int     log_reject_target      = 0;
 916 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 917 uschar *log_selector_string    = NULL;
 918 FILE   *log_stderr             = NULL;
 919 BOOL    log_testing_mode       = FALSE;
 920 BOOL    log_timezone           = FALSE;
 921 uschar *login_sender_address   = NULL;
 922 uschar *lookup_dnssec_authenticated = NULL;
 923 int     lookup_open_max        = 25;
 924 uschar *lookup_value           = NULL;
 925
 926 macro_item  *macros            = NULL;
 927 uschar *mailstore_basename     = NULL;
 928 #ifdef WITH_CONTENT_SCAN
 929 uschar *malware_name           = NULL;  /* Virus Name */
 930 #endif
 931 int     max_received_linelength= 0;
 932 int     max_username_length    = 0;
 933 int     message_age            = 0;
 934 uschar *message_body           = NULL;
 935 uschar *message_body_end       = NULL;
 936 BOOL    message_body_newlines  = FALSE;
 937 int     message_body_size      = 0;
 938 int     message_body_visible   = 500;
 939 int     message_ended          = END_NOTSTARTED;
 940 uschar *message_headers        = NULL;
 941 uschar *message_id;
 942 uschar *message_id_domain      = NULL;
 943 uschar *message_id_text        = NULL;
 944 struct timeval message_id_tv   = { 0, 0 };
 945 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 946 uschar *message_id_external;
 947 int     message_linecount      = 0;
 948 BOOL    message_logs           = TRUE;
 949 int     message_size           = 0;
 950 uschar *message_size_limit     = US"50M";
 951 #ifdef SUPPORT_I18N
 952 BOOL    message_smtputf8       = FALSE;
 953 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 954 #endif
 955 uschar  message_subdir[2]      = { 0, 0 };
 956 uschar *message_reference      = NULL;
 957
 958 /* MIME ACL expandables */
 959 #ifdef WITH_CONTENT_SCAN
 960 int     mime_anomaly_level     = 0;
 961 const uschar *mime_anomaly_text      = NULL;
 962 uschar *mime_boundary          = NULL;
 963 uschar *mime_charset           = NULL;
 964 uschar *mime_content_description = NULL;
 965 uschar *mime_content_disposition = NULL;
 966 uschar *mime_content_id        = NULL;
 967 unsigned int mime_content_size = 0;
 968 uschar *mime_content_transfer_encoding = NULL;
 969 uschar *mime_content_type      = NULL;
 970 uschar *mime_decoded_filename  = NULL;
 971 uschar *mime_filename          = NULL;
 972 int     mime_is_multipart      = 0;
 973 int     mime_is_coverletter    = 0;
 974 int     mime_is_rfc822         = 0;
 975 int     mime_part_count        = -1;
 976 #endif
 977
 978 BOOL    mua_wrapper            = FALSE;
 979
 980 uid_t  *never_users            = NULL;
 981 #ifdef WITH_CONTENT_SCAN
 982 BOOL    no_mbox_unspool        = FALSE;
 983 #endif
 984 BOOL    no_multiline_responses = FALSE;
 985
 986 uid_t   original_euid;
 987 gid_t   originator_gid;
 988 uschar *originator_login       = NULL;
 989 uschar *originator_name        = NULL;
 990 uid_t   originator_uid;
 991 uschar *override_local_interfaces = NULL;
 992 uschar *override_pid_file_path = NULL;
 993
 994 BOOL    parse_allow_group      = FALSE;
 995 BOOL    parse_found_group      = FALSE;
 996 uschar *percent_hack_domains   = NULL;
 997 uschar *pid_file_path          = US PID_FILE_PATH
 998                            "\0<--------------Space to patch pid_file_path->";
 999 BOOL    pipelining_enable      = TRUE;
1000 uschar *pipelining_advertise_hosts = US"*";
1001 BOOL    preserve_message_logs  = FALSE;
1002 uschar *primary_hostname       = NULL;
1003 BOOL    print_topbitchars      = FALSE;
1004 uschar  process_info[PROCESS_INFO_SIZE];
1005 int     process_info_len       = 0;
1006 uschar *process_log_path       = NULL;
1007 BOOL    prod_requires_admin    = TRUE;
1008
1009 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1010 uschar *hosts_proxy            = US"";
1011 uschar *proxy_external_address = US"";
1012 int     proxy_external_port    = 0;
1013 uschar *proxy_local_address    = US"";
1014 int     proxy_local_port       = 0;
1015 BOOL    proxy_session          = FALSE;
1016 BOOL    proxy_session_failed   = FALSE;
1017 #endif
1018
1019 uschar *prvscheck_address      = NULL;
1020 uschar *prvscheck_keynum       = NULL;
1021 uschar *prvscheck_result       = NULL;
1022
1023
1024 const uschar *qualify_domain_recipient = NULL;
1025 uschar *qualify_domain_sender  = NULL;
1026 BOOL    queue_2stage           = FALSE;
1027 uschar *queue_domains          = NULL;
1028 int     queue_interval         = -1;
1029 BOOL    queue_list_requires_admin = TRUE;
1030 uschar *queue_name             = US"";
1031 BOOL    queue_only             = FALSE;
1032 uschar *queue_only_file        = NULL;
1033 int     queue_only_load        = -1;
1034 BOOL    queue_only_load_latch  = TRUE;
1035 BOOL    queue_only_override    = TRUE;
1036 BOOL    queue_only_policy      = FALSE;
1037 BOOL    queue_run_first_delivery = FALSE;
1038 BOOL    queue_run_force        = FALSE;
1039 BOOL    queue_run_in_order     = FALSE;
1040 BOOL    queue_run_local        = FALSE;
1041 uschar *queue_run_max          = US"5";
1042 pid_t   queue_run_pid          = (pid_t)0;
1043 int     queue_run_pipe         = -1;
1044 BOOL    queue_running          = FALSE;
1045 BOOL    queue_smtp             = FALSE;
1046 uschar *queue_smtp_domains     = NULL;
1047
1048 unsigned int random_seed       = 0;
1049 tree_node *ratelimiters_cmd    = NULL;
1050 tree_node *ratelimiters_conn   = NULL;
1051 tree_node *ratelimiters_mail   = NULL;
1052 uschar *raw_active_hostname    = NULL;
1053 uschar *raw_sender             = NULL;
1054 uschar **raw_recipients        = NULL;
1055 int     raw_recipients_count   = 0;
1056
1057 int     rcpt_count             = 0;
1058 int     rcpt_fail_count        = 0;
1059 int     rcpt_defer_count       = 0;
1060 gid_t   real_gid;
1061 uid_t   real_uid;
1062 BOOL    really_exim            = TRUE;
1063 BOOL    receive_call_bombout   = FALSE;
1064 int     receive_linecount      = 0;
1065 int     receive_messagecount   = 0;
1066 int     receive_timeout        = 0;
1067 int     received_count         = 0;
1068 uschar *received_for           = NULL;
1069
1070 /*  This is the default text for Received headers generated by Exim. The
1071 date  will be automatically added on the end. */
1072
1073 uschar *received_header_text   = US
1074      "Received: "
1075      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1076      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1077      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1078      "by $primary_hostname "
1079      "${if def:received_protocol {with $received_protocol}} "
1080      #ifdef SUPPORT_TLS
1081      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1082      #endif
1083      "(Exim $version_number)\n\t"
1084      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1085      "id $message_exim_id"
1086      "${if def:received_for {\n\tfor $received_for}}"
1087      "\0<---------------Space to patch received_header_text->";
1088
1089 int     received_headers_max   = 30;
1090 uschar *received_protocol      = NULL;
1091 int     received_time          = 0;
1092 uschar *recipient_data         = NULL;
1093 uschar *recipient_unqualified_hosts = NULL;
1094 uschar *recipient_verify_failure = NULL;
1095 int     recipients_count       = 0;
1096 BOOL    recipients_discarded   = FALSE;
1097 recipient_item  *recipients_list = NULL;
1098 int     recipients_list_max    = 0;
1099 int     recipients_max         = 0;
1100 BOOL    recipients_max_reject  = FALSE;
1101 const pcre *regex_AUTH         = NULL;
1102 const pcre *regex_check_dns_names = NULL;
1103 const pcre *regex_From         = NULL;
1104 const pcre *regex_IGNOREQUOTA  = NULL;
1105 const pcre *regex_PIPELINING   = NULL;
1106 const pcre *regex_SIZE         = NULL;
1107 const pcre *regex_ismsgid      = NULL;
1108 const pcre *regex_smtp_code    = NULL;
1109 uschar *regex_vars[REGEX_VARS];
1110 #ifdef WHITELIST_D_MACROS
1111 const pcre *regex_whitelisted_macro = NULL;
1112 #endif
1113 #ifdef WITH_CONTENT_SCAN
1114 uschar *regex_match_string     = NULL;
1115 #endif
1116 int     remote_delivery_count  = 0;
1117 int     remote_max_parallel    = 2;
1118 uschar *remote_sort_domains    = NULL;
1119 int     retry_data_expire      = 7*24*60*60;
1120 int     retry_interval_max     = 24*60*60;
1121 int     retry_maximum_timeout  = 0;        /* set from retry config */
1122 retry_config  *retries         = NULL;
1123 uschar *return_path            = NULL;
1124 BOOL    return_path_remove     = TRUE;
1125 int     rewrite_existflags     = 0;
1126 uschar *rfc1413_hosts          = US"@[]";
1127 int     rfc1413_query_timeout  = 0;
1128 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1129 uid_t   root_gid               = ROOT_GID;
1130 uid_t   root_uid               = ROOT_UID;
1131
1132 router_instance  *routers  = NULL;
1133 router_instance  router_defaults = {
1134     NULL,                      /* chain pointer */
1135     NULL,                      /* name */
1136     NULL,                      /* info */
1137     NULL,                      /* private options block pointer */
1138     NULL,                      /* driver name */
1139
1140     NULL,                      /* address_data */
1141 #ifdef EXPERIMENTAL_BRIGHTMAIL
1142     NULL,                      /* bmi_rule */
1143 #endif
1144     NULL,                      /* cannot_route_message */
1145     NULL,                      /* condition */
1146     NULL,                      /* current_directory */
1147     NULL,                      /* debug_string */
1148     NULL,                      /* domains */
1149     NULL,                      /* errors_to */
1150     NULL,                      /* expand_gid */
1151     NULL,                      /* expand_uid */
1152     NULL,                      /* expand_more */
1153     NULL,                      /* expand_unseen */
1154     NULL,                      /* extra_headers */
1155     NULL,                      /* fallback_hosts */
1156     NULL,                      /* home_directory */
1157     NULL,                      /* ignore_target_hosts */
1158     NULL,                      /* local_parts */
1159     NULL,                      /* pass_router_name */
1160     NULL,                      /* prefix */
1161     NULL,                      /* redirect_router_name */
1162     NULL,                      /* remove_headers */
1163     NULL,                      /* require_files */
1164     NULL,                      /* router_home_directory */
1165     US"freeze",                /* self */
1166     NULL,                      /* senders */
1167     NULL,                      /* suffix */
1168     NULL,                      /* translate_ip_address */
1169     NULL,                      /* transport_name */
1170
1171     TRUE,                      /* address_test */
1172 #ifdef EXPERIMENTAL_BRIGHTMAIL
1173     FALSE,                     /* bmi_deliver_alternate */
1174     FALSE,                     /* bmi_deliver_default */
1175     FALSE,                     /* bmi_dont_deliver */
1176 #endif
1177     TRUE,                      /* expn */
1178     FALSE,                     /* caseful_local_part */
1179     FALSE,                     /* check_local_user */
1180     FALSE,                     /* disable_logging */
1181     FALSE,                     /* fail_verify_recipient */
1182     FALSE,                     /* fail_verify_sender */
1183     FALSE,                     /* gid_set */
1184     FALSE,                     /* initgroups */
1185     TRUE_UNSET,                /* log_as_local */
1186     TRUE,                      /* more */
1187     FALSE,                     /* pass_on_timeout */
1188     FALSE,                     /* prefix_optional */
1189     TRUE,                      /* repeat_use */
1190     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1191     FALSE,                     /* same_domain_copy_routing */
1192     FALSE,                     /* self_rewrite */
1193     FALSE,                     /* suffix_optional */
1194     FALSE,                     /* verify_only */
1195     TRUE,                      /* verify_recipient */
1196     TRUE,                      /* verify_sender */
1197     FALSE,                     /* uid_set */
1198     FALSE,                     /* unseen */
1199     FALSE,                     /* dsn_lasthop */
1200
1201     self_freeze,               /* self_code */
1202     (uid_t)(-1),               /* uid */
1203     (gid_t)(-1),               /* gid */
1204
1205     NULL,                      /* fallback_hostlist */
1206     NULL,                      /* transport instance */
1207     NULL,                      /* pass_router */
1208     NULL,                      /* redirect_router */
1209
1210     { NULL, NULL },            /* dnssec_domains {require,request} */
1211 };
1212
1213 uschar *router_name            = NULL;
1214
1215 ip_address_item *running_interfaces = NULL;
1216 BOOL    running_in_test_harness = FALSE;
1217
1218 /* This is a weird one. The following string gets patched in the binary by the
1219 script that sets up a copy of Exim for running in the test harness. It seems
1220 that compilers are now clever, and share constant strings if they can.
1221 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1222 make use of the end of this string in order to save space. So the patching then
1223 wrecks this. We defeat this optimization by adding some additional characters
1224 onto the end of the string. */
1225
1226 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1227
1228 int     runrc                  = 0;
1229
1230 uschar *search_error_message   = NULL;
1231 BOOL    search_find_defer      = FALSE;
1232 uschar *self_hostname          = NULL;
1233 uschar *sender_address         = NULL;
1234 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1235 uschar *sender_address_data    = NULL;
1236 BOOL    sender_address_forced  = FALSE;
1237 uschar *sender_address_unrewritten = NULL;
1238 uschar *sender_data            = NULL;
1239 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1240 uschar *sender_fullhost        = NULL;
1241 BOOL    sender_helo_dnssec     = FALSE;
1242 uschar *sender_helo_name       = NULL;
1243 uschar **sender_host_aliases   = &no_aliases;
1244 uschar *sender_host_address    = NULL;
1245 uschar *sender_host_authenticated = NULL;
1246 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1247 BOOL    sender_host_dnssec     = FALSE;
1248 uschar *sender_host_name       = NULL;
1249 int     sender_host_port       = 0;
1250 BOOL    sender_host_notsocket  = FALSE;
1251 BOOL    sender_host_unknown    = FALSE;
1252 uschar *sender_ident           = NULL;
1253 BOOL    sender_local           = FALSE;
1254 BOOL    sender_name_forced     = FALSE;
1255 uschar *sender_rate            = NULL;
1256 uschar *sender_rate_limit      = NULL;
1257 uschar *sender_rate_period     = NULL;
1258 uschar *sender_rcvhost         = NULL;
1259 BOOL    sender_set_untrusted   = FALSE;
1260 uschar *sender_unqualified_hosts = NULL;
1261 uschar *sender_verify_failure = NULL;
1262 address_item *sender_verified_list  = NULL;
1263 address_item *sender_verified_failed = NULL;
1264 int     sender_verified_rc     = -1;
1265 BOOL    sender_verified_responded = FALSE;
1266 uschar *sending_ip_address     = NULL;
1267 int     sending_port           = -1;
1268 SIGNAL_BOOL sigalrm_seen       = FALSE;
1269 uschar **sighup_argv           = NULL;
1270 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1271 int     smtp_accept_count      = 0;
1272 BOOL    smtp_accept_keepalive  = TRUE;
1273 int     smtp_accept_max        = 20;
1274 int     smtp_accept_max_nonmail= 10;
1275 uschar *smtp_accept_max_nonmail_hosts = US"*";
1276 int     smtp_accept_max_per_connection = 1000;
1277 uschar *smtp_accept_max_per_host = NULL;
1278 int     smtp_accept_queue      = 0;
1279 int     smtp_accept_queue_per_connection = 10;
1280 int     smtp_accept_reserve    = 0;
1281 uschar *smtp_active_hostname   = NULL;
1282 BOOL    smtp_authenticated     = FALSE;
1283 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1284                              "Exim $version_number $tod_full"
1285                              "\0<---------------Space to patch smtp_banner->";
1286 BOOL    smtp_batched_input     = FALSE;
1287 BOOL    smtp_check_spool_space = TRUE;
1288 int     smtp_ch_index          = 0;
1289 uschar *smtp_cmd_argument      = NULL;
1290 uschar *smtp_cmd_buffer        = NULL;
1291 time_t  smtp_connection_start  = 0;
1292 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1293 int     smtp_connect_backlog   = 20;
1294 double  smtp_delay_mail        = 0.0;
1295 double  smtp_delay_rcpt        = 0.0;
1296 BOOL    smtp_enforce_sync      = TRUE;
1297 FILE   *smtp_in                = NULL;
1298 BOOL    smtp_input             = FALSE;
1299 int     smtp_load_reserve      = -1;
1300 int     smtp_mailcmd_count     = 0;
1301 FILE   *smtp_out               = NULL;
1302 uschar *smtp_etrn_command      = NULL;
1303 BOOL    smtp_etrn_serialize    = TRUE;
1304 int     smtp_max_synprot_errors= 3;
1305 int     smtp_max_unknown_commands = 3;
1306 uschar *smtp_notquit_reason    = NULL;
1307 uschar *smtp_ratelimit_hosts   = NULL;
1308 uschar *smtp_ratelimit_mail    = NULL;
1309 uschar *smtp_ratelimit_rcpt    = NULL;
1310 uschar *smtp_read_error        = US"";
1311 int     smtp_receive_timeout   = 5*60;
1312 uschar *smtp_receive_timeout_s = NULL;
1313 uschar *smtp_reserve_hosts     = NULL;
1314 BOOL    smtp_return_error_details = FALSE;
1315 int     smtp_rlm_base          = 0;
1316 double  smtp_rlm_factor        = 0.0;
1317 int     smtp_rlm_limit         = 0;
1318 int     smtp_rlm_threshold     = INT_MAX;
1319 int     smtp_rlr_base          = 0;
1320 double  smtp_rlr_factor        = 0.0;
1321 int     smtp_rlr_limit         = 0;
1322 int     smtp_rlr_threshold     = INT_MAX;
1323 unsigned smtp_peer_options     = 0;
1324 unsigned smtp_peer_options_wrap= 0;
1325 #ifdef SUPPORT_I18N
1326 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1327 #endif
1328
1329 #ifdef WITH_CONTENT_SCAN
1330 uschar *spamd_address          = US"127.0.0.1 783";
1331 uschar *spam_bar               = NULL;
1332 uschar *spam_report            = NULL;
1333 uschar *spam_action            = NULL;
1334 uschar *spam_score             = NULL;
1335 uschar *spam_score_int         = NULL;
1336 #endif
1337 #ifdef EXPERIMENTAL_SPF
1338 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1339 uschar *spf_header_comment     = NULL;
1340 uschar *spf_received           = NULL;
1341 uschar *spf_result             = NULL;
1342 uschar *spf_smtp_comment       = NULL;
1343 #endif
1344
1345 BOOL    split_spool_directory  = FALSE;
1346 uschar *spool_directory        = US SPOOL_DIRECTORY
1347                            "\0<--------------Space to patch spool_directory->";
1348 #ifdef EXPERIMENTAL_SRS
1349 uschar *srs_config             = NULL;
1350 uschar *srs_db_address         = NULL;
1351 uschar *srs_db_key             = NULL;
1352 int     srs_hashlength         = 6;
1353 int     srs_hashmin            = -1;
1354 int     srs_maxage             = 31;
1355 uschar *srs_orig_recipient     = NULL;
1356 uschar *srs_orig_sender        = NULL;
1357 uschar *srs_recipient          = NULL;
1358 uschar *srs_secrets            = NULL;
1359 uschar *srs_status             = NULL;
1360 BOOL    srs_usehash            = TRUE;
1361 BOOL    srs_usetimestamp       = TRUE;
1362 #endif
1363 BOOL    strict_acl_vars        = FALSE;
1364 int     string_datestamp_offset= -1;
1365 int     string_datestamp_length= 0;
1366 int     string_datestamp_type  = -1;
1367 BOOL    strip_excess_angle_brackets = FALSE;
1368 BOOL    strip_trailing_dot     = FALSE;
1369 uschar *submission_domain      = NULL;
1370 BOOL    submission_mode        = FALSE;
1371 uschar *submission_name        = NULL;
1372 BOOL    suppress_local_fixups  = FALSE;
1373 BOOL    suppress_local_fixups_default = FALSE;
1374 BOOL    synchronous_delivery   = FALSE;
1375 BOOL    syslog_duplication     = TRUE;
1376 int     syslog_facility        = LOG_MAIL;
1377 uschar *syslog_processname     = US"exim";
1378 BOOL    syslog_timestamp       = TRUE;
1379 uschar *system_filter          = NULL;
1380
1381 uschar *system_filter_directory_transport = NULL;
1382 uschar *system_filter_file_transport = NULL;
1383 uschar *system_filter_pipe_transport = NULL;
1384 uschar *system_filter_reply_transport = NULL;
1385
1386 gid_t   system_filter_gid      = 0;
1387 BOOL    system_filter_gid_set  = FALSE;
1388 uid_t   system_filter_uid      = (uid_t)-1;
1389 BOOL    system_filter_uid_set  = FALSE;
1390 BOOL    system_filtering       = FALSE;
1391
1392 BOOL    tcp_nodelay            = TRUE;
1393 #ifdef USE_TCP_WRAPPERS
1394 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1395 #endif
1396 int     test_harness_load_avg  = 0;
1397 int     thismessage_size_limit = 0;
1398 int     timeout_frozen_after   = 0;
1399 BOOL    timestamps_utc         = FALSE;
1400
1401 transport_instance  *transports = NULL;
1402
1403 transport_instance  transport_defaults = {
1404     NULL,                     /* chain pointer */
1405     NULL,                     /* name */
1406     NULL,                     /* info */
1407     NULL,                     /* private options block pointer */
1408     NULL,                     /* driver name */
1409     NULL,                     /* setup entry point */
1410     1,                        /* batch_max */
1411     NULL,                     /* batch_id */
1412     NULL,                     /* home_dir */
1413     NULL,                     /* current_dir */
1414     NULL,                     /* expand-multi-domain */
1415     TRUE,                     /* multi-domain */
1416     FALSE,                    /* overrides_hosts */
1417     100,                      /* max_addresses */
1418     500,                      /* connection_max_messages */
1419     FALSE,                    /* deliver_as_creator */
1420     FALSE,                    /* disable_logging */
1421     FALSE,                    /* initgroups */
1422     FALSE,                    /* uid_set */
1423     FALSE,                    /* gid_set */
1424     (uid_t)(-1),              /* uid */
1425     (gid_t)(-1),              /* gid */
1426     NULL,                     /* expand_uid */
1427     NULL,                     /* expand_gid */
1428     NULL,                     /* warn_message */
1429     NULL,                     /* shadow */
1430     NULL,                     /* shadow_condition */
1431     NULL,                     /* filter_command */
1432     NULL,                     /* add_headers */
1433     NULL,                     /* remove_headers */
1434     NULL,                     /* return_path */
1435     NULL,                     /* debug_string */
1436     NULL,                     /* max_parallel */
1437     NULL,                     /* message_size_limit */
1438     NULL,                     /* headers_rewrite */
1439     NULL,                     /* rewrite_rules */
1440     0,                        /* rewrite_existflags */
1441     300,                      /* filter_timeout */
1442     FALSE,                    /* body_only */
1443     FALSE,                    /* delivery_date_add */
1444     FALSE,                    /* envelope_to_add */
1445     FALSE,                    /* headers_only */
1446     FALSE,                    /* rcpt_include_affixes */
1447     FALSE,                    /* return_path_add */
1448     FALSE,                    /* return_output */
1449     FALSE,                    /* return_fail_output */
1450     FALSE,                    /* log_output */
1451     FALSE,                    /* log_fail_output */
1452     FALSE,                    /* log_defer_output */
1453     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1454                                  1 nor 0 so can detect unset */
1455 #ifndef DISABLE_EVENT
1456    ,NULL                      /* event_action */
1457 #endif
1458 };
1459
1460 int     transport_count;
1461 uschar *transport_name          = NULL;
1462 int     transport_newlines;
1463 const uschar **transport_filter_argv  = NULL;
1464 int     transport_filter_timeout;
1465 BOOL    transport_filter_timed_out = FALSE;
1466 int     transport_write_timeout= 0;
1467
1468 tree_node  *tree_dns_fails     = NULL;
1469 tree_node  *tree_duplicates    = NULL;
1470 tree_node  *tree_nonrecipients = NULL;
1471 tree_node  *tree_unusable      = NULL;
1472
1473 BOOL    trusted_caller         = FALSE;
1474 BOOL    trusted_config         = TRUE;
1475 gid_t  *trusted_groups         = NULL;
1476 uid_t  *trusted_users          = NULL;
1477 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1478
1479 uschar *unknown_login          = NULL;
1480 uschar *unknown_username       = NULL;
1481 uschar *untrusted_set_sender   = NULL;
1482
1483 /*  A regex for matching a "From_" line in an incoming message, in the form
1484
1485     From ph10 Fri Jan  5 12:35 GMT 1996
1486
1487 which  the "mail" commands send to the MTA (undocumented, of course), or in
1488 the  form
1489
1490     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1491
1492 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1493 Because  of variations in time formats, just match up to the minutes. That
1494 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1495 so  just require one digit for hours and minutes. The weekday is also absent
1496 in  some forms. */
1497
1498 uschar *uucp_from_pattern      = US
1499    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1500    "(?:"                                          /* Non-extracting bracket */
1501    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1502    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1503    ")"                                            /* End alternation */
1504    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1505
1506 uschar *uucp_from_sender       = US"$1";
1507
1508 uschar *verify_mode            = NULL;
1509 uschar *version_copyright      =
1510  US"Copyright (c) University of Cambridge, 1995 - 2016\n"
1511    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2016";
1512 uschar *version_date           = US"?";
1513 uschar *version_cnumber        = US"????";
1514 uschar *version_string         = US"?";
1515
1516 uschar *warn_message_file      = NULL;
1517 int     warning_count          = 0;
1518 uschar *warnmsg_delay          = NULL;
1519 uschar *warnmsg_recipients     = NULL;
1520 BOOL    write_rejectlog        = TRUE;
1521
1522
1523 /*  End of globals.c */