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  .active =              -1,
 105  .bits =                0,
 106  .certificate_verified = FALSE,
 107 #ifdef EXPERIMENTAL_DANE
 108  .dane_verified =       FALSE,
 109  .tlsa_usage =          0,
 110 #endif
 111  .cipher =              NULL,
 112  .on_connect =          FALSE,
 113  .on_connect_ports =    NULL,
 114  .ourcert =             NULL,
 115  .peercert =            NULL,
 116  .peerdn =              NULL,
 117  .sni =                 NULL,
 118  .ocsp =                OCSP_NOT_REQ
 119 };
 120 tls_support tls_out = {
 121  .active =              -1,
 122  .bits =                0,
 123  .certificate_verified = FALSE,
 124 #ifdef EXPERIMENTAL_DANE
 125  .dane_verified =       FALSE,
 126  .tlsa_usage =          0,
 127 #endif
 128  .cipher =              NULL,
 129  .on_connect =          FALSE,
 130  .on_connect_ports =    NULL,
 131  .ourcert =             NULL,
 132  .peercert =            NULL,
 133  .peerdn =              NULL,
 134  .sni =                 NULL,
 135  .ocsp =                OCSP_NOT_REQ
 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 #if !defined(STAND_ALONE) && !defined(MACRO_PREDEF)
 186 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 187 uschar * (*lwr_receive_getbuf)(unsigned *) = NULL;
 188 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 189 int (*receive_getc)(unsigned)  = stdin_getc;
 190 uschar * (*receive_getbuf)(unsigned *)  = NULL;
 191 void (*receive_get_cache)(void)= NULL;
 192 int (*receive_ungetc)(int)     = stdin_ungetc;
 193 int (*receive_feof)(void)      = stdin_feof;
 194 int (*receive_ferror)(void)    = stdin_ferror;
 195 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 196 #endif
 197
 198
 199 /* List of per-address expansion variables for clearing and saving/restoring
 200 when verifying one address while routing/verifying another. We have to have
 201 the size explicit, because it is referenced from more than one module. */
 202
 203 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 204   CUSS &deliver_address_data,
 205   CUSS &deliver_domain,
 206   CUSS &deliver_domain_data,
 207   CUSS &deliver_domain_orig,
 208   CUSS &deliver_domain_parent,
 209   CUSS &deliver_localpart,
 210   CUSS &deliver_localpart_data,
 211   CUSS &deliver_localpart_orig,
 212   CUSS &deliver_localpart_parent,
 213   CUSS &deliver_localpart_prefix,
 214   CUSS &deliver_localpart_suffix,
 215   CUSS (uschar **)(&deliver_recipients),
 216   CUSS &deliver_host,
 217   CUSS &deliver_home,
 218   CUSS &address_file,
 219   CUSS &address_pipe,
 220   CUSS &self_hostname,
 221   NULL };
 222
 223 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 224
 225 /* General global variables */
 226
 227 header_line *acl_added_headers = NULL;
 228 tree_node *acl_anchor          = NULL;
 229 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 230                                   NULL, NULL, NULL, NULL};
 231 int     acl_narg               = 0;
 232
 233 int     acl_level              = 0;
 234
 235 uschar *acl_not_smtp           = NULL;
 236 #ifdef WITH_CONTENT_SCAN
 237 uschar *acl_not_smtp_mime      = NULL;
 238 #endif
 239 uschar *acl_not_smtp_start     = NULL;
 240 uschar *acl_removed_headers    = NULL;
 241 uschar *acl_smtp_auth          = NULL;
 242 uschar *acl_smtp_connect       = NULL;
 243 uschar *acl_smtp_data          = NULL;
 244 #ifndef DISABLE_PRDR
 245 uschar *acl_smtp_data_prdr     = US"accept";
 246 #endif
 247 #ifndef DISABLE_DKIM
 248 uschar *acl_smtp_dkim          = NULL;
 249 #endif
 250 uschar *acl_smtp_etrn          = NULL;
 251 uschar *acl_smtp_expn          = NULL;
 252 uschar *acl_smtp_helo          = NULL;
 253 uschar *acl_smtp_mail          = NULL;
 254 uschar *acl_smtp_mailauth      = NULL;
 255 #ifdef WITH_CONTENT_SCAN
 256 uschar *acl_smtp_mime          = NULL;
 257 #endif
 258 uschar *acl_smtp_notquit       = NULL;
 259 uschar *acl_smtp_predata       = NULL;
 260 uschar *acl_smtp_quit          = NULL;
 261 uschar *acl_smtp_rcpt          = NULL;
 262 uschar *acl_smtp_starttls      = NULL;
 263 uschar *acl_smtp_vrfy          = NULL;
 264
 265 BOOL    acl_temp_details       = FALSE;
 266 tree_node *acl_var_c           = NULL;
 267 tree_node *acl_var_m           = NULL;
 268 uschar *acl_verify_message     = NULL;
 269 string_item *acl_warn_logged   = NULL;
 270
 271 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 272 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 273
 274 uschar *acl_wherenames[]       = { US"RCPT",
 275                                    US"MAIL",
 276                                    US"PREDATA",
 277                                    US"MIME",
 278                                    US"DKIM",
 279                                    US"DATA",
 280 #ifndef DISABLE_PRDR
 281                                    US"PRDR",
 282 #endif
 283                                    US"non-SMTP",
 284                                    US"AUTH",
 285                                    US"connection",
 286                                    US"ETRN",
 287                                    US"EXPN",
 288                                    US"EHLO or HELO",
 289                                    US"MAILAUTH",
 290                                    US"non-SMTP-start",
 291                                    US"NOTQUIT",
 292                                    US"QUIT",
 293                                    US"STARTTLS",
 294                                    US"VRFY",
 295                                    US"delivery",
 296                                    US"unknown"
 297                                  };
 298
 299 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 300                                    US"550",     /* MAIL */
 301                                    US"550",     /* PREDATA */
 302                                    US"550",     /* MIME */
 303                                    US"550",     /* DKIM */
 304                                    US"550",     /* DATA */
 305 #ifndef DISABLE_PRDR
 306                                    US"550",    /* RCPT PRDR */
 307 #endif
 308                                    US"0",       /* not SMTP; not relevant */
 309                                    US"503",     /* AUTH */
 310                                    US"550",     /* connect */
 311                                    US"458",     /* ETRN */
 312                                    US"550",     /* EXPN */
 313                                    US"550",     /* HELO/EHLO */
 314                                    US"0",       /* MAILAUTH; not relevant */
 315                                    US"0",       /* not SMTP; not relevant */
 316                                    US"0",       /* NOTQUIT; not relevant */
 317                                    US"0",       /* QUIT; not relevant */
 318                                    US"550",     /* STARTTLS */
 319                                    US"252",     /* VRFY */
 320                                    US"0",       /* delivery; not relevant */
 321                                    US"0"        /* unknown; not relevant */
 322                                  };
 323
 324 BOOL    active_local_from_check = FALSE;
 325 BOOL    active_local_sender_retain = FALSE;
 326 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 327 uschar *add_environment        = NULL;
 328 address_item  *addr_duplicate  = NULL;
 329
 330 address_item address_defaults = {
 331   .next =               NULL,
 332   .parent =             NULL,
 333   .first =              NULL,
 334   .dupof =              NULL,
 335   .start_router =       NULL,
 336   .router =             NULL,
 337   .transport =          NULL,
 338   .host_list =          NULL,
 339   .host_used =          NULL,
 340   .fallback_hosts =     NULL,
 341   .reply =              NULL,
 342   .retries =            NULL,
 343   .address =            NULL,
 344   .unique =             NULL,
 345   .cc_local_part =      NULL,
 346   .lc_local_part =      NULL,
 347   .local_part =         NULL,
 348   .prefix =             NULL,
 349   .suffix =             NULL,
 350   .domain =             NULL,
 351   .address_retry_key =  NULL,
 352   .domain_retry_key =   NULL,
 353   .current_dir =        NULL,
 354   .home_dir =           NULL,
 355   .message =            NULL,
 356   .user_message =       NULL,
 357   .onetime_parent =     NULL,
 358   .pipe_expandn =       NULL,
 359   .return_filename =    NULL,
 360   .self_hostname =      NULL,
 361   .shadow_message =     NULL,
 362 #ifdef SUPPORT_TLS
 363   .cipher =             NULL,
 364   .ourcert =            NULL,
 365   .peercert =           NULL,
 366   .peerdn =             NULL,
 367   .ocsp =               OCSP_NOT_REQ,
 368 #endif
 369 #ifdef EXPERIMENTAL_DSN_INFO
 370   .smtp_greeting =      NULL,
 371   .helo_response =      NULL,
 372 #endif
 373   .authenticator =      NULL,
 374   .auth_id =            NULL,
 375   .auth_sndr =          NULL,
 376   .dsn_orcpt =          NULL,
 377   .dsn_flags =          0,
 378   .dsn_aware =          0,
 379   .uid =                (uid_t)(-1),
 380   .gid =                (gid_t)(-1),
 381   .flags =              { 0 },
 382   .domain_cache =       { 0 },                /* domain_cache - any larger array should be zeroed */
 383   .localpart_cache =    { 0 },                /* localpart_cache - ditto */
 384   .mode =               -1,
 385   .more_errno =         0,
 386   .delivery_usec =      0,
 387   .basic_errno =        ERRNO_UNKNOWNERROR,
 388   .child_count =        0,
 389   .return_file =        -1,
 390   .special_action =     SPECIAL_NONE,
 391   .transport_return =   DEFER,
 392   .prop = {                                     /* fields that are propagated to children */
 393     .address_data =     NULL,
 394     .domain_data =      NULL,
 395     .localpart_data =   NULL,
 396     .errors_address =   NULL,
 397     .extra_headers =    NULL,
 398     .remove_headers =   NULL,
 399 #ifdef EXPERIMENTAL_SRS
 400     .srs_sender =       NULL,
 401 #endif
 402     .ignore_error =     FALSE,
 403 #ifdef SUPPORT_I18N
 404     .utf8_msg =         FALSE,
 405     .utf8_downcvt =     FALSE,
 406     .utf8_downcvt_maybe = FALSE
 407 #endif
 408   }
 409 };
 410
 411 uschar *address_file           = NULL;
 412 uschar *address_pipe           = NULL;
 413 BOOL    address_test_mode      = FALSE;
 414 tree_node *addresslist_anchor  = NULL;
 415 int     addresslist_count      = 0;
 416 gid_t  *admin_groups           = NULL;
 417 BOOL    admin_user             = FALSE;
 418 BOOL    allow_auth_unadvertised= FALSE;
 419 BOOL    allow_domain_literals  = FALSE;
 420 BOOL    allow_mx_to_ip         = FALSE;
 421 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 422 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 423 BOOL    allow_utf8_domains     = FALSE;
 424 uschar *authenticated_fail_id  = NULL;
 425 uschar *authenticated_id       = NULL;
 426 uschar *authenticated_sender   = NULL;
 427 BOOL    authentication_failed  = FALSE;
 428 auth_instance  *auths          = NULL;
 429 uschar *auth_advertise_hosts   = US"*";
 430 auth_instance auth_defaults    = {
 431     .next =             NULL,
 432     .name =             NULL,
 433     .info =             NULL,
 434     .options_block =    NULL,
 435     .driver_name =      NULL,
 436     .advertise_condition = NULL,
 437     .client_condition = NULL,
 438     .public_name =      NULL,
 439     .set_id =           NULL,
 440     .set_client_id =    NULL,
 441     .mail_auth_condition = NULL,
 442     .server_debug_string = NULL,
 443     .server_condition = NULL,
 444     .client =           FALSE,
 445     .server =           FALSE,
 446     .advertised =       FALSE
 447 };
 448
 449 uschar *auth_defer_msg         = US"reason not recorded";
 450 uschar *auth_defer_user_msg    = US"";
 451 uschar *auth_vars[AUTH_VARS];
 452 int     auto_thaw              = 0;
 453 #ifdef WITH_CONTENT_SCAN
 454 BOOL    av_failed              = FALSE;
 455 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 456 #endif
 457
 458 BOOL    background_daemon      = TRUE;
 459
 460 #if BASE_62 == 62
 461 uschar *base62_chars=
 462     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 463 #else
 464 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 465 #endif
 466
 467 uschar *bi_command             = NULL;
 468 uschar *big_buffer             = NULL;
 469 int     big_buffer_size        = BIG_BUFFER_SIZE;
 470 #ifdef EXPERIMENTAL_BRIGHTMAIL
 471 uschar *bmi_alt_location       = NULL;
 472 uschar *bmi_base64_tracker_verdict = NULL;
 473 uschar *bmi_base64_verdict     = NULL;
 474 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 475 int     bmi_deliver            = 1;
 476 int     bmi_run                = 0;
 477 uschar *bmi_verdicts           = NULL;
 478 #endif
 479 int     bsmtp_transaction_linecount = 0;
 480 int     body_8bitmime          = 0;
 481 int     body_linecount         = 0;
 482 int     body_zerocount         = 0;
 483 uschar *bounce_message_file    = NULL;
 484 uschar *bounce_message_text    = NULL;
 485 uschar *bounce_recipient       = NULL;
 486 BOOL    bounce_return_body     = TRUE;
 487 int     bounce_return_linesize_limit = 998;
 488 BOOL    bounce_return_message  = TRUE;
 489 int     bounce_return_size_limit = 100*1024;
 490 uschar *bounce_sender_authentication = NULL;
 491 uschar *builtin_macros_create_trigger = NULL;
 492
 493 uschar *callout_address        = NULL;
 494 int     callout_cache_domain_positive_expire = 7*24*60*60;
 495 int     callout_cache_domain_negative_expire = 3*60*60;
 496 int     callout_cache_positive_expire = 24*60*60;
 497 int     callout_cache_negative_expire = 2*60*60;
 498 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 499 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 500 int     check_log_inodes       = 100;
 501 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 502 BOOL    check_rfc2047_length   = TRUE;
 503 int     check_spool_inodes     = 100;
 504 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 505
 506 uschar *chunking_advertise_hosts = US"*";
 507 unsigned chunking_datasize     = 0;
 508 unsigned chunking_data_left    = 0;
 509 BOOL    chunking_offered       = FALSE;
 510 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 511 const pcre *regex_CHUNKING     = NULL;
 512
 513 uschar *client_authenticator   = NULL;
 514 uschar *client_authenticated_id = NULL;
 515 uschar *client_authenticated_sender = NULL;
 516 int     clmacro_count          = 0;
 517 uschar *clmacros[MAX_CLMACROS];
 518 BOOL    commandline_checks_require_admin = FALSE;
 519 BOOL    config_changed         = FALSE;
 520 FILE   *config_file            = NULL;
 521 const uschar *config_filename  = NULL;
 522 int     config_lineno          = 0;
 523 #ifdef CONFIGURE_GROUP
 524 gid_t   config_gid             = CONFIGURE_GROUP;
 525 #else
 526 gid_t   config_gid             = 0;
 527 #endif
 528 uschar *config_main_filelist   = US CONFIGURE_FILE
 529                          "\0<-----------Space to patch configure_filename->";
 530 uschar *config_main_filename   = NULL;
 531 uschar *config_main_directory  = NULL;
 532
 533 #ifdef CONFIGURE_OWNER
 534 uid_t   config_uid             = CONFIGURE_OWNER;
 535 #else
 536 uid_t   config_uid             = 0;
 537 #endif
 538
 539 int     connection_max_messages= -1;
 540 uschar *continue_proxy_cipher  = NULL;
 541 uschar *continue_hostname      = NULL;
 542 uschar *continue_host_address  = NULL;
 543 BOOL    continue_more          = FALSE;
 544 int     continue_sequence      = 1;
 545 uschar *continue_transport     = NULL;
 546
 547 uschar *csa_status             = NULL;
 548 cut_t   cutthrough = {
 549   .callout_hold_only =  FALSE,                          /* verify-only: normal delivery */
 550   .delivery =           FALSE,                          /* when to attempt */
 551   .defer_pass =         FALSE,                          /* on defer: spool locally */
 552   .is_tls =             FALSE,                          /* not a TLS conn yet */
 553   .fd =                 -1,                             /* open connection */
 554   .nrcpt =              0,                              /* number of addresses */
 555 };
 556
 557 BOOL    daemon_listen          = FALSE;
 558 uschar *daemon_smtp_port       = US"smtp";
 559 int     daemon_startup_retries = 9;
 560 int     daemon_startup_sleep   = 30;
 561
 562 #ifdef EXPERIMENTAL_DCC
 563 BOOL    dcc_direct_add_header  = FALSE;
 564 uschar *dcc_header             = NULL;
 565 uschar *dcc_result             = NULL;
 566 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 567 uschar *dccifd_options         = US"header";
 568 #endif
 569
 570 BOOL    debug_daemon           = FALSE;
 571 int     debug_fd               = -1;
 572 FILE   *debug_file             = NULL;
 573 int     debug_notall[]         = {
 574   Di_memory,
 575   -1
 576 };
 577 bit_table debug_options[]      = { /* must be in alphabetical order */
 578   BIT_TABLE(D, acl),
 579   BIT_TABLE(D, all),
 580   BIT_TABLE(D, auth),
 581   BIT_TABLE(D, deliver),
 582   BIT_TABLE(D, dns),
 583   BIT_TABLE(D, dnsbl),
 584   BIT_TABLE(D, exec),
 585   BIT_TABLE(D, expand),
 586   BIT_TABLE(D, filter),
 587   BIT_TABLE(D, hints_lookup),
 588   BIT_TABLE(D, host_lookup),
 589   BIT_TABLE(D, ident),
 590   BIT_TABLE(D, interface),
 591   BIT_TABLE(D, lists),
 592   BIT_TABLE(D, load),
 593   BIT_TABLE(D, local_scan),
 594   BIT_TABLE(D, lookup),
 595   BIT_TABLE(D, memory),
 596   BIT_TABLE(D, pid),
 597   BIT_TABLE(D, process_info),
 598   BIT_TABLE(D, queue_run),
 599   BIT_TABLE(D, receive),
 600   BIT_TABLE(D, resolver),
 601   BIT_TABLE(D, retry),
 602   BIT_TABLE(D, rewrite),
 603   BIT_TABLE(D, route),
 604   BIT_TABLE(D, timestamp),
 605   BIT_TABLE(D, tls),
 606   BIT_TABLE(D, transport),
 607   BIT_TABLE(D, uid),
 608   BIT_TABLE(D, verify),
 609 };
 610 int     debug_options_count    = nelem(debug_options);
 611
 612 unsigned int debug_selector    = 0;
 613 BOOL    debug_store            = FALSE;
 614 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 615 uschar *delay_warning_condition=
 616   US"${if or {"
 617             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 618             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 619             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 620             "} {no}{yes}}";
 621 BOOL    delivery_date_remove   = TRUE;
 622 uschar *deliver_address_data   = NULL;
 623 int     deliver_datafile       = -1;
 624 const uschar *deliver_domain   = NULL;
 625 uschar *deliver_domain_data    = NULL;
 626 const uschar *deliver_domain_orig = NULL;
 627 const uschar *deliver_domain_parent = NULL;
 628 BOOL    deliver_drop_privilege = FALSE;
 629 BOOL    deliver_firsttime      = FALSE;
 630 BOOL    deliver_force          = FALSE;
 631 BOOL    deliver_freeze         = FALSE;
 632 time_t  deliver_frozen_at      = 0;
 633 uschar *deliver_home           = NULL;
 634 const uschar *deliver_host     = NULL;
 635 const uschar *deliver_host_address = NULL;
 636 int     deliver_host_port      = 0;
 637 uschar *deliver_in_buffer      = NULL;
 638 ino_t   deliver_inode          = 0;
 639 uschar *deliver_localpart      = NULL;
 640 uschar *deliver_localpart_data = NULL;
 641 uschar *deliver_localpart_orig = NULL;
 642 uschar *deliver_localpart_parent = NULL;
 643 uschar *deliver_localpart_prefix = NULL;
 644 uschar *deliver_localpart_suffix = NULL;
 645 BOOL    deliver_force_thaw     = FALSE;
 646 BOOL    deliver_manual_thaw    = FALSE;
 647 uschar *deliver_out_buffer     = NULL;
 648 int     deliver_queue_load_max = -1;
 649 address_item  *deliver_recipients = NULL;
 650 uschar *deliver_selectstring   = NULL;
 651 BOOL    deliver_selectstring_regex = FALSE;
 652 uschar *deliver_selectstring_sender = NULL;
 653 BOOL    deliver_selectstring_sender_regex = FALSE;
 654 BOOL    disable_callout_flush  = FALSE;
 655 BOOL    disable_delay_flush    = FALSE;
 656 #ifdef ENABLE_DISABLE_FSYNC
 657 BOOL    disable_fsync          = FALSE;
 658 #endif
 659 BOOL    disable_ipv6           = FALSE;
 660 BOOL    disable_logging        = FALSE;
 661
 662 #ifndef DISABLE_DKIM
 663 BOOL    dkim_collect_input       = FALSE;
 664 uschar *dkim_cur_signer          = NULL;
 665 BOOL    dkim_disable_verify      = FALSE;
 666 int     dkim_key_length          = 0;
 667 uschar *dkim_signers             = NULL;
 668 uschar *dkim_signing_domain      = NULL;
 669 uschar *dkim_signing_selector    = NULL;
 670 uschar *dkim_verify_signers      = US"$dkim_signers";
 671 #endif
 672 #ifdef EXPERIMENTAL_DMARC
 673 BOOL    dmarc_has_been_checked  = FALSE;
 674 uschar *dmarc_ar_header         = NULL;
 675 uschar *dmarc_domain_policy     = NULL;
 676 uschar *dmarc_forensic_sender   = NULL;
 677 uschar *dmarc_history_file      = NULL;
 678 uschar *dmarc_status            = NULL;
 679 uschar *dmarc_status_text       = NULL;
 680 uschar *dmarc_tld_file          = NULL;
 681 uschar *dmarc_used_domain       = NULL;
 682 BOOL    dmarc_disable_verify    = FALSE;
 683 BOOL    dmarc_enable_forensic   = FALSE;
 684 #endif
 685
 686 uschar *dns_again_means_nonexist = NULL;
 687 int     dns_csa_search_limit   = 5;
 688 BOOL    dns_csa_use_reverse    = TRUE;
 689 #ifdef EXPERIMENTAL_DANE
 690 int     dns_dane_ok            = -1;
 691 #endif
 692 uschar *dns_ipv4_lookup        = NULL;
 693 int     dns_retrans            = 0;
 694 int     dns_retry              = 0;
 695 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 696 uschar *dns_trust_aa           = NULL;
 697 int     dns_use_edns0          = -1; /* <0 = not coerced */
 698 uschar *dnslist_domain         = NULL;
 699 uschar *dnslist_matched        = NULL;
 700 uschar *dnslist_text           = NULL;
 701 uschar *dnslist_value          = NULL;
 702 tree_node *domainlist_anchor   = NULL;
 703 int     domainlist_count       = 0;
 704 BOOL    dont_deliver           = FALSE;
 705 BOOL    dot_ends               = TRUE;
 706 BOOL    drop_cr                = FALSE;         /* No longer used */
 707 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 708
 709 BOOL    enable_dollar_recipients = FALSE;
 710 BOOL    envelope_to_remove     = TRUE;
 711 int     errno_quota            = ERRNO_QUOTA;
 712 uschar *errors_copy            = NULL;
 713 int     error_handling         = ERRORS_SENDER;
 714 uschar *errors_reply_to        = NULL;
 715 int     errors_sender_rc       = EXIT_FAILURE;
 716 #ifndef DISABLE_EVENT
 717 uschar *event_action             = NULL;        /* expansion for delivery events */
 718 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 719 int     event_defer_errno        = 0;
 720 const uschar *event_name         = NULL;        /* event name variable */
 721 #endif
 722
 723
 724 gid_t   exim_gid               = EXIM_GID;
 725 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 726 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 727                         "\0<---------------Space to patch exim_path->";
 728 uid_t   exim_uid               = EXIM_UID;
 729 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 730 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 731 int     expand_forbid          = 0;
 732 int     expand_nlength[EXPAND_MAXN+1];
 733 int     expand_nmax            = -1;
 734 uschar *expand_nstring[EXPAND_MAXN+1];
 735 BOOL    expand_string_forcedfail = FALSE;
 736 uschar *expand_string_message;
 737 BOOL    extract_addresses_remove_arguments = TRUE;
 738 uschar *extra_local_interfaces = NULL;
 739
 740 int     fake_response          = OK;
 741 uschar *fake_response_text     = US"Your message has been rejected but is "
 742                                    "being kept for evaluation.\nIf it was a "
 743                                    "legitimate message, it may still be "
 744                                    "delivered to the target recipient(s).";
 745 int     filter_n[FILTER_VARIABLE_COUNT];
 746 BOOL    filter_running         = FALSE;
 747 int     filter_sn[FILTER_VARIABLE_COUNT];
 748 int     filter_test            = FTEST_NONE;
 749 uschar *filter_test_sfile      = NULL;
 750 uschar *filter_test_ufile      = NULL;
 751 uschar *filter_thisaddress     = NULL;
 752 int     finduser_retries       = 0;
 753 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 754 uschar *freeze_tell            = NULL;
 755 uschar *freeze_tell_config     = NULL;
 756 uschar *fudged_queue_times     = US"";
 757
 758 uschar *gecos_name             = NULL;
 759 uschar *gecos_pattern          = NULL;
 760 rewrite_rule  *global_rewrite_rules = NULL;
 761
 762 uschar *headers_charset        = US HEADERS_CHARSET;
 763 int     header_insert_maxlen   = 64 * 1024;
 764 header_line  *header_last      = NULL;
 765 header_line  *header_list      = NULL;
 766 int     header_maxsize         = HEADER_MAXSIZE;
 767 int     header_line_maxsize    = 0;
 768
 769 header_name header_names[] = {
 770   /* name               len     allow_resent    htype */
 771   { US"bcc",            3,      TRUE,           htype_bcc },
 772   { US"cc",             2,      TRUE,           htype_cc },
 773   { US"date",           4,      TRUE,           htype_date },
 774   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 775   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 776   { US"from",           4,      TRUE,           htype_from },
 777   { US"message-id",    10,      TRUE,           htype_id },
 778   { US"received",       8,      FALSE,          htype_received },
 779   { US"reply-to",       8,      FALSE,          htype_reply_to },
 780   { US"return-path",   11,      FALSE,          htype_return_path },
 781   { US"sender",         6,      TRUE,           htype_sender },
 782   { US"subject",        7,      FALSE,          htype_subject },
 783   { US"to",             2,      TRUE,           htype_to }
 784 };
 785
 786 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 787
 788 BOOL    header_rewritten       = FALSE;
 789 uschar *helo_accept_junk_hosts = NULL;
 790 uschar *helo_allow_chars       = US"";
 791 uschar *helo_lookup_domains    = US"@ : @[]";
 792 uschar *helo_try_verify_hosts  = NULL;
 793 BOOL    helo_verified          = FALSE;
 794 BOOL    helo_verify_failed     = FALSE;
 795 uschar *helo_verify_hosts      = NULL;
 796 const uschar *hex_digits       = CUS"0123456789abcdef";
 797 uschar *hold_domains           = NULL;
 798 BOOL    host_checking          = FALSE;
 799 BOOL    host_checking_callout  = FALSE;
 800 uschar *host_data              = NULL;
 801 BOOL    host_find_failed_syntax= FALSE;
 802 uschar *host_lookup            = NULL;
 803 BOOL    host_lookup_deferred   = FALSE;
 804 BOOL    host_lookup_failed     = FALSE;
 805 uschar *host_lookup_order      = US"bydns:byaddr";
 806 uschar *host_lookup_msg        = US"";
 807 int     host_number            = 0;
 808 uschar *host_number_string     = NULL;
 809 uschar *host_reject_connection = NULL;
 810 tree_node *hostlist_anchor     = NULL;
 811 int     hostlist_count         = 0;
 812 uschar *hosts_treat_as_local   = NULL;
 813 uschar *hosts_connection_nolog = NULL;
 814
 815 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 816 BOOL    ignore_fromline_local  = FALSE;
 817 uschar *ignore_fromline_hosts  = NULL;
 818 BOOL    inetd_wait_mode        = FALSE;
 819 int     inetd_wait_timeout     = -1;
 820 uschar *initial_cwd            = NULL;
 821 uschar *interface_address      = NULL;
 822 int     interface_port         = -1;
 823 BOOL    is_inetd               = FALSE;
 824 uschar *iterate_item           = NULL;
 825
 826 int     journal_fd             = -1;
 827
 828 uschar *keep_environment       = NULL;
 829
 830 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 831
 832 uschar *eldap_dn               = NULL;
 833 int     load_average           = -2;
 834 BOOL    local_error_message    = FALSE;
 835 BOOL    local_from_check       = TRUE;
 836 uschar *local_from_prefix      = NULL;
 837 uschar *local_from_suffix      = NULL;
 838
 839 #if HAVE_IPV6
 840 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 841 #else
 842 uschar *local_interfaces       = US"0.0.0.0";
 843 #endif
 844
 845 uschar *local_scan_data        = NULL;
 846 int     local_scan_timeout     = 5*60;
 847 BOOL    local_sender_retain    = FALSE;
 848 gid_t   local_user_gid         = (gid_t)(-1);
 849 uid_t   local_user_uid         = (uid_t)(-1);
 850
 851 tree_node *localpartlist_anchor= NULL;
 852 int     localpartlist_count    = 0;
 853 uschar *log_buffer             = NULL;
 854
 855 int     log_default[]          = { /* for initializing log_selector */
 856   Li_acl_warn_skipped,
 857   Li_connection_reject,
 858   Li_delay_delivery,
 859   Li_dnslist_defer,
 860   Li_etrn,
 861   Li_host_lookup_failed,
 862   Li_lost_incoming_connection,
 863   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 864   Li_queue_run,
 865   Li_rejected_header,
 866   Li_retry_defer,
 867   Li_sender_verify_fail,
 868   Li_size_reject,
 869   Li_skip_delivery,
 870   Li_smtp_confirmation,
 871   Li_tls_certificate_verified,
 872   Li_tls_cipher,
 873   -1
 874 };
 875
 876 uschar *log_file_path          = US LOG_FILE_PATH
 877                            "\0<--------------Space to patch log_file_path->";
 878
 879 int     log_notall[]           = {
 880   -1
 881 };
 882 bit_table log_options[]        = { /* must be in alphabetical order */
 883   BIT_TABLE(L, 8bitmime),
 884   BIT_TABLE(L, acl_warn_skipped),
 885   BIT_TABLE(L, address_rewrite),
 886   BIT_TABLE(L, all),
 887   BIT_TABLE(L, all_parents),
 888   BIT_TABLE(L, arguments),
 889   BIT_TABLE(L, connection_reject),
 890   BIT_TABLE(L, delay_delivery),
 891   BIT_TABLE(L, deliver_time),
 892   BIT_TABLE(L, delivery_size),
 893   BIT_TABLE(L, dnslist_defer),
 894   BIT_TABLE(L, dnssec),
 895   BIT_TABLE(L, etrn),
 896   BIT_TABLE(L, host_lookup_failed),
 897   BIT_TABLE(L, ident_timeout),
 898   BIT_TABLE(L, incoming_interface),
 899   BIT_TABLE(L, incoming_port),
 900   BIT_TABLE(L, lost_incoming_connection),
 901   BIT_TABLE(L, millisec),
 902   BIT_TABLE(L, outgoing_interface),
 903   BIT_TABLE(L, outgoing_port),
 904   BIT_TABLE(L, pid),
 905 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 906   BIT_TABLE(L, proxy),
 907 #endif
 908   BIT_TABLE(L, queue_run),
 909   BIT_TABLE(L, queue_time),
 910   BIT_TABLE(L, queue_time_overall),
 911   BIT_TABLE(L, received_recipients),
 912   BIT_TABLE(L, received_sender),
 913   BIT_TABLE(L, rejected_header),
 914   { US"rejected_headers", Li_rejected_header },
 915   BIT_TABLE(L, retry_defer),
 916   BIT_TABLE(L, return_path_on_delivery),
 917   BIT_TABLE(L, sender_on_delivery),
 918   BIT_TABLE(L, sender_verify_fail),
 919   BIT_TABLE(L, size_reject),
 920   BIT_TABLE(L, skip_delivery),
 921   BIT_TABLE(L, smtp_confirmation),
 922   BIT_TABLE(L, smtp_connection),
 923   BIT_TABLE(L, smtp_incomplete_transaction),
 924   BIT_TABLE(L, smtp_mailauth),
 925   BIT_TABLE(L, smtp_no_mail),
 926   BIT_TABLE(L, smtp_protocol_error),
 927   BIT_TABLE(L, smtp_syntax_error),
 928   BIT_TABLE(L, subject),
 929   BIT_TABLE(L, tls_certificate_verified),
 930   BIT_TABLE(L, tls_cipher),
 931   BIT_TABLE(L, tls_peerdn),
 932   BIT_TABLE(L, tls_sni),
 933   BIT_TABLE(L, unknown_in_list),
 934 };
 935 int     log_options_count      = nelem(log_options);
 936
 937 int     log_reject_target      = 0;
 938 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 939 uschar *log_selector_string    = NULL;
 940 FILE   *log_stderr             = NULL;
 941 BOOL    log_testing_mode       = FALSE;
 942 BOOL    log_timezone           = FALSE;
 943 uschar *login_sender_address   = NULL;
 944 uschar *lookup_dnssec_authenticated = NULL;
 945 int     lookup_open_max        = 25;
 946 uschar *lookup_value           = NULL;
 947
 948 uschar *mailstore_basename     = NULL;
 949 #ifdef WITH_CONTENT_SCAN
 950 uschar *malware_name           = NULL;  /* Virus Name */
 951 #endif
 952 int     max_received_linelength= 0;
 953 int     max_username_length    = 0;
 954 int     message_age            = 0;
 955 uschar *message_body           = NULL;
 956 uschar *message_body_end       = NULL;
 957 BOOL    message_body_newlines  = FALSE;
 958 int     message_body_size      = 0;
 959 int     message_body_visible   = 500;
 960 int     message_ended          = END_NOTSTARTED;
 961 uschar *message_headers        = NULL;
 962 uschar *message_id;
 963 uschar *message_id_domain      = NULL;
 964 uschar *message_id_text        = NULL;
 965 struct timeval message_id_tv   = { 0, 0 };
 966 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 967 uschar *message_id_external;
 968 int     message_linecount      = 0;
 969 BOOL    message_logs           = TRUE;
 970 int     message_size           = 0;
 971 uschar *message_size_limit     = US"50M";
 972 #ifdef SUPPORT_I18N
 973 BOOL    message_smtputf8       = FALSE;
 974 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 975 #endif
 976 uschar  message_subdir[2]      = { 0, 0 };
 977 uschar *message_reference      = NULL;
 978
 979 /* MIME ACL expandables */
 980 #ifdef WITH_CONTENT_SCAN
 981 int     mime_anomaly_level     = 0;
 982 const uschar *mime_anomaly_text      = NULL;
 983 uschar *mime_boundary          = NULL;
 984 uschar *mime_charset           = NULL;
 985 uschar *mime_content_description = NULL;
 986 uschar *mime_content_disposition = NULL;
 987 uschar *mime_content_id        = NULL;
 988 unsigned int mime_content_size = 0;
 989 uschar *mime_content_transfer_encoding = NULL;
 990 uschar *mime_content_type      = NULL;
 991 uschar *mime_decoded_filename  = NULL;
 992 uschar *mime_filename          = NULL;
 993 int     mime_is_multipart      = 0;
 994 int     mime_is_coverletter    = 0;
 995 int     mime_is_rfc822         = 0;
 996 int     mime_part_count        = -1;
 997 #endif
 998
 999 BOOL    mua_wrapper            = FALSE;
1000
1001 uid_t  *never_users            = NULL;
1002 #ifdef WITH_CONTENT_SCAN
1003 BOOL    no_mbox_unspool        = FALSE;
1004 #endif
1005 BOOL    no_multiline_responses = FALSE;
1006
1007 const int on                   = 1;     /* for setsockopt */
1008 const int off                  = 0;
1009
1010 uid_t   original_euid;
1011 gid_t   originator_gid;
1012 uschar *originator_login       = NULL;
1013 uschar *originator_name        = NULL;
1014 uid_t   originator_uid;
1015 uschar *override_local_interfaces = NULL;
1016 uschar *override_pid_file_path = NULL;
1017
1018 BOOL    parse_allow_group      = FALSE;
1019 BOOL    parse_found_group      = FALSE;
1020 uschar *percent_hack_domains   = NULL;
1021 uschar *pid_file_path          = US PID_FILE_PATH
1022                            "\0<--------------Space to patch pid_file_path->";
1023 BOOL    pipelining_enable      = TRUE;
1024 uschar *pipelining_advertise_hosts = US"*";
1025 BOOL    preserve_message_logs  = FALSE;
1026 uschar *primary_hostname       = NULL;
1027 BOOL    print_topbitchars      = FALSE;
1028 uschar  process_info[PROCESS_INFO_SIZE];
1029 int     process_info_len       = 0;
1030 uschar *process_log_path       = NULL;
1031 BOOL    prod_requires_admin    = TRUE;
1032
1033 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1034 uschar *hosts_proxy            = US"";
1035 uschar *proxy_external_address = US"";
1036 int     proxy_external_port    = 0;
1037 uschar *proxy_local_address    = US"";
1038 int     proxy_local_port       = 0;
1039 BOOL    proxy_session          = FALSE;
1040 BOOL    proxy_session_failed   = FALSE;
1041 #endif
1042
1043 uschar *prvscheck_address      = NULL;
1044 uschar *prvscheck_keynum       = NULL;
1045 uschar *prvscheck_result       = NULL;
1046
1047
1048 const uschar *qualify_domain_recipient = NULL;
1049 uschar *qualify_domain_sender  = NULL;
1050 BOOL    queue_2stage           = FALSE;
1051 uschar *queue_domains          = NULL;
1052 int     queue_interval         = -1;
1053 BOOL    queue_list_requires_admin = TRUE;
1054 uschar *queue_name             = US"";
1055 BOOL    queue_only             = FALSE;
1056 uschar *queue_only_file        = NULL;
1057 int     queue_only_load        = -1;
1058 BOOL    queue_only_load_latch  = TRUE;
1059 BOOL    queue_only_override    = TRUE;
1060 BOOL    queue_only_policy      = FALSE;
1061 BOOL    queue_run_first_delivery = FALSE;
1062 BOOL    queue_run_force        = FALSE;
1063 BOOL    queue_run_in_order     = FALSE;
1064 BOOL    queue_run_local        = FALSE;
1065 uschar *queue_run_max          = US"5";
1066 pid_t   queue_run_pid          = (pid_t)0;
1067 int     queue_run_pipe         = -1;
1068 BOOL    queue_running          = FALSE;
1069 BOOL    queue_smtp             = FALSE;
1070 uschar *queue_smtp_domains     = NULL;
1071
1072 unsigned int random_seed       = 0;
1073 tree_node *ratelimiters_cmd    = NULL;
1074 tree_node *ratelimiters_conn   = NULL;
1075 tree_node *ratelimiters_mail   = NULL;
1076 uschar *raw_active_hostname    = NULL;
1077 uschar *raw_sender             = NULL;
1078 uschar **raw_recipients        = NULL;
1079 int     raw_recipients_count   = 0;
1080
1081 int     rcpt_count             = 0;
1082 int     rcpt_fail_count        = 0;
1083 int     rcpt_defer_count       = 0;
1084 gid_t   real_gid;
1085 uid_t   real_uid;
1086 BOOL    really_exim            = TRUE;
1087 BOOL    receive_call_bombout   = FALSE;
1088 int     receive_linecount      = 0;
1089 int     receive_messagecount   = 0;
1090 int     receive_timeout        = 0;
1091 int     received_count         = 0;
1092 uschar *received_for           = NULL;
1093
1094 /*  This is the default text for Received headers generated by Exim. The
1095 date  will be automatically added on the end. */
1096
1097 uschar *received_header_text   = US
1098      "Received: "
1099      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1100      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1101      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1102      "by $primary_hostname "
1103      "${if def:received_protocol {with $received_protocol}} "
1104      #ifdef SUPPORT_TLS
1105      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1106      #endif
1107      "(Exim $version_number)\n\t"
1108      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1109      "id $message_exim_id"
1110      "${if def:received_for {\n\tfor $received_for}}"
1111      "\0<---------------Space to patch received_header_text->";
1112
1113 int     received_headers_max   = 30;
1114 uschar *received_protocol      = NULL;
1115 struct timeval received_time   = { 0, 0 };
1116 uschar *recipient_data         = NULL;
1117 uschar *recipient_unqualified_hosts = NULL;
1118 uschar *recipient_verify_failure = NULL;
1119 int     recipients_count       = 0;
1120 BOOL    recipients_discarded   = FALSE;
1121 recipient_item  *recipients_list = NULL;
1122 int     recipients_list_max    = 0;
1123 int     recipients_max         = 0;
1124 BOOL    recipients_max_reject  = FALSE;
1125 const pcre *regex_AUTH         = NULL;
1126 const pcre *regex_check_dns_names = NULL;
1127 const pcre *regex_From         = NULL;
1128 const pcre *regex_IGNOREQUOTA  = NULL;
1129 const pcre *regex_PIPELINING   = NULL;
1130 const pcre *regex_SIZE         = NULL;
1131 const pcre *regex_ismsgid      = NULL;
1132 const pcre *regex_smtp_code    = NULL;
1133 uschar *regex_vars[REGEX_VARS];
1134 #ifdef WHITELIST_D_MACROS
1135 const pcre *regex_whitelisted_macro = NULL;
1136 #endif
1137 #ifdef WITH_CONTENT_SCAN
1138 uschar *regex_match_string     = NULL;
1139 #endif
1140 int     remote_delivery_count  = 0;
1141 int     remote_max_parallel    = 2;
1142 uschar *remote_sort_domains    = NULL;
1143 int     retry_data_expire      = 7*24*60*60;
1144 int     retry_interval_max     = 24*60*60;
1145 int     retry_maximum_timeout  = 0;        /* set from retry config */
1146 retry_config  *retries         = NULL;
1147 uschar *return_path            = NULL;
1148 BOOL    return_path_remove     = TRUE;
1149 int     rewrite_existflags     = 0;
1150 uschar *rfc1413_hosts          = US"@[]";
1151 int     rfc1413_query_timeout  = 0;
1152 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1153 uid_t   root_gid               = ROOT_GID;
1154 uid_t   root_uid               = ROOT_UID;
1155
1156 router_instance  *routers  = NULL;
1157 router_instance  router_defaults = {
1158     .next =                     NULL,
1159     .name =                     NULL,
1160     .info =                     NULL,
1161     .options_block =            NULL,
1162     .driver_name =              NULL,
1163
1164     .address_data =             NULL,
1165 #ifdef EXPERIMENTAL_BRIGHTMAIL
1166     .bmi_rule =                 NULL,
1167 #endif
1168     .cannot_route_message =     NULL,
1169     .condition =                NULL,
1170     .current_directory =        NULL,
1171     .debug_string =             NULL,
1172     .domains =                  NULL,
1173     .errors_to =                NULL,
1174     .expand_gid =               NULL,
1175     .expand_uid =               NULL,
1176     .expand_more =              NULL,
1177     .expand_unseen =            NULL,
1178     .extra_headers =            NULL,
1179     .fallback_hosts =           NULL,
1180     .home_directory =           NULL,
1181     .ignore_target_hosts =      NULL,
1182     .local_parts =              NULL,
1183     .pass_router_name =         NULL,
1184     .prefix =                   NULL,
1185     .redirect_router_name =     NULL,
1186     .remove_headers =           NULL,
1187     .require_files =            NULL,
1188     .router_home_directory =    NULL,
1189     .self =                     US"freeze",
1190     .senders =                  NULL,
1191     .suffix =                   NULL,
1192     .translate_ip_address =     NULL,
1193     .transport_name =           NULL,
1194
1195     .address_test =             TRUE,
1196 #ifdef EXPERIMENTAL_BRIGHTMAIL
1197     .bmi_deliver_alternate =    FALSE,
1198     .bmi_deliver_default =      FALSE,
1199     .bmi_dont_deliver =         FALSE,
1200 #endif
1201     .expn =                     TRUE,
1202     .caseful_local_part =       FALSE,
1203     .check_local_user =         FALSE,
1204     .disable_logging =          FALSE,
1205     .fail_verify_recipient =    FALSE,
1206     .fail_verify_sender =       FALSE,
1207     .gid_set =                  FALSE,
1208     .initgroups =               FALSE,
1209     .log_as_local =             TRUE_UNSET,
1210     .more =                     TRUE,
1211     .pass_on_timeout =          FALSE,
1212     .prefix_optional =          FALSE,
1213     .repeat_use =               TRUE,
1214     .retry_use_local_part =     TRUE_UNSET,
1215     .same_domain_copy_routing = FALSE,
1216     .self_rewrite =             FALSE,
1217     .suffix_optional =          FALSE,
1218     .verify_only =              FALSE,
1219     .verify_recipient =         TRUE,
1220     .verify_sender =            TRUE,
1221     .uid_set =                  FALSE,
1222     .unseen =                   FALSE,
1223     .dsn_lasthop =              FALSE,
1224
1225     .self_code =                self_freeze,
1226     .uid =                      (uid_t)(-1),
1227     .gid =                      (gid_t)(-1),
1228
1229     .fallback_hostlist =        NULL,
1230     .transport =                NULL,
1231     .pass_router =              NULL,
1232     .redirect_router =          NULL,
1233
1234     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1235 };
1236
1237 uschar *router_name            = NULL;
1238
1239 ip_address_item *running_interfaces = NULL;
1240 BOOL    running_in_test_harness = FALSE;
1241
1242 /* This is a weird one. The following string gets patched in the binary by the
1243 script that sets up a copy of Exim for running in the test harness. It seems
1244 that compilers are now clever, and share constant strings if they can.
1245 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1246 make use of the end of this string in order to save space. So the patching then
1247 wrecks this. We defeat this optimization by adding some additional characters
1248 onto the end of the string. */
1249
1250 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1251
1252 int     runrc                  = 0;
1253
1254 uschar *search_error_message   = NULL;
1255 BOOL    search_find_defer      = FALSE;
1256 uschar *self_hostname          = NULL;
1257 uschar *sender_address         = NULL;
1258 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1259 uschar *sender_address_data    = NULL;
1260 BOOL    sender_address_forced  = FALSE;
1261 uschar *sender_address_unrewritten = NULL;
1262 uschar *sender_data            = NULL;
1263 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1264 uschar *sender_fullhost        = NULL;
1265 BOOL    sender_helo_dnssec     = FALSE;
1266 uschar *sender_helo_name       = NULL;
1267 uschar **sender_host_aliases   = &no_aliases;
1268 uschar *sender_host_address    = NULL;
1269 uschar *sender_host_authenticated = NULL;
1270 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1271 BOOL    sender_host_dnssec     = FALSE;
1272 uschar *sender_host_name       = NULL;
1273 int     sender_host_port       = 0;
1274 BOOL    sender_host_notsocket  = FALSE;
1275 BOOL    sender_host_unknown    = FALSE;
1276 uschar *sender_ident           = NULL;
1277 BOOL    sender_local           = FALSE;
1278 BOOL    sender_name_forced     = FALSE;
1279 uschar *sender_rate            = NULL;
1280 uschar *sender_rate_limit      = NULL;
1281 uschar *sender_rate_period     = NULL;
1282 uschar *sender_rcvhost         = NULL;
1283 BOOL    sender_set_untrusted   = FALSE;
1284 uschar *sender_unqualified_hosts = NULL;
1285 uschar *sender_verify_failure = NULL;
1286 address_item *sender_verified_list  = NULL;
1287 address_item *sender_verified_failed = NULL;
1288 int     sender_verified_rc     = -1;
1289 BOOL    sender_verified_responded = FALSE;
1290 uschar *sending_ip_address     = NULL;
1291 int     sending_port           = -1;
1292 SIGNAL_BOOL sigalrm_seen       = FALSE;
1293 uschar **sighup_argv           = NULL;
1294 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1295 int     smtp_accept_count      = 0;
1296 BOOL    smtp_accept_keepalive  = TRUE;
1297 int     smtp_accept_max        = 20;
1298 int     smtp_accept_max_nonmail= 10;
1299 uschar *smtp_accept_max_nonmail_hosts = US"*";
1300 int     smtp_accept_max_per_connection = 1000;
1301 uschar *smtp_accept_max_per_host = NULL;
1302 int     smtp_accept_queue      = 0;
1303 int     smtp_accept_queue_per_connection = 10;
1304 int     smtp_accept_reserve    = 0;
1305 uschar *smtp_active_hostname   = NULL;
1306 BOOL    smtp_authenticated     = FALSE;
1307 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1308                              "Exim $version_number $tod_full"
1309                              "\0<---------------Space to patch smtp_banner->";
1310 BOOL    smtp_batched_input     = FALSE;
1311 BOOL    smtp_check_spool_space = TRUE;
1312 int     smtp_ch_index          = 0;
1313 uschar *smtp_cmd_argument      = NULL;
1314 uschar *smtp_cmd_buffer        = NULL;
1315 struct timeval smtp_connection_start  = {0,0};
1316 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1317 int     smtp_connect_backlog   = 20;
1318 double  smtp_delay_mail        = 0.0;
1319 double  smtp_delay_rcpt        = 0.0;
1320 BOOL    smtp_enforce_sync      = TRUE;
1321 FILE   *smtp_in                = NULL;
1322 BOOL    smtp_input             = FALSE;
1323 int     smtp_load_reserve      = -1;
1324 int     smtp_mailcmd_count     = 0;
1325 FILE   *smtp_out               = NULL;
1326 uschar *smtp_etrn_command      = NULL;
1327 BOOL    smtp_etrn_serialize    = TRUE;
1328 int     smtp_max_synprot_errors= 3;
1329 int     smtp_max_unknown_commands = 3;
1330 uschar *smtp_notquit_reason    = NULL;
1331 uschar *smtp_ratelimit_hosts   = NULL;
1332 uschar *smtp_ratelimit_mail    = NULL;
1333 uschar *smtp_ratelimit_rcpt    = NULL;
1334 uschar *smtp_read_error        = US"";
1335 int     smtp_receive_timeout   = 5*60;
1336 uschar *smtp_receive_timeout_s = NULL;
1337 uschar *smtp_reserve_hosts     = NULL;
1338 BOOL    smtp_return_error_details = FALSE;
1339 int     smtp_rlm_base          = 0;
1340 double  smtp_rlm_factor        = 0.0;
1341 int     smtp_rlm_limit         = 0;
1342 int     smtp_rlm_threshold     = INT_MAX;
1343 int     smtp_rlr_base          = 0;
1344 double  smtp_rlr_factor        = 0.0;
1345 int     smtp_rlr_limit         = 0;
1346 int     smtp_rlr_threshold     = INT_MAX;
1347 unsigned smtp_peer_options     = 0;
1348 unsigned smtp_peer_options_wrap= 0;
1349 #ifdef SUPPORT_I18N
1350 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1351 #endif
1352
1353 #ifdef WITH_CONTENT_SCAN
1354 uschar *spamd_address          = US"127.0.0.1 783";
1355 uschar *spam_bar               = NULL;
1356 uschar *spam_report            = NULL;
1357 uschar *spam_action            = NULL;
1358 uschar *spam_score             = NULL;
1359 uschar *spam_score_int         = NULL;
1360 #endif
1361 #ifdef EXPERIMENTAL_SPF
1362 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1363 uschar *spf_header_comment     = NULL;
1364 uschar *spf_received           = NULL;
1365 uschar *spf_result             = NULL;
1366 uschar *spf_smtp_comment       = NULL;
1367 #endif
1368
1369 BOOL    split_spool_directory  = FALSE;
1370 uschar *spool_directory        = US SPOOL_DIRECTORY
1371                            "\0<--------------Space to patch spool_directory->";
1372 BOOL    spool_file_wireformat  = FALSE;
1373 BOOL    spool_wireformat       = FALSE;
1374 #ifdef EXPERIMENTAL_SRS
1375 uschar *srs_config             = NULL;
1376 uschar *srs_db_address         = NULL;
1377 uschar *srs_db_key             = NULL;
1378 int     srs_hashlength         = 6;
1379 int     srs_hashmin            = -1;
1380 int     srs_maxage             = 31;
1381 uschar *srs_orig_recipient     = NULL;
1382 uschar *srs_orig_sender        = NULL;
1383 uschar *srs_recipient          = NULL;
1384 uschar *srs_secrets            = NULL;
1385 uschar *srs_status             = NULL;
1386 BOOL    srs_usehash            = TRUE;
1387 BOOL    srs_usetimestamp       = TRUE;
1388 #endif
1389 BOOL    strict_acl_vars        = FALSE;
1390 int     string_datestamp_offset= -1;
1391 int     string_datestamp_length= 0;
1392 int     string_datestamp_type  = -1;
1393 BOOL    strip_excess_angle_brackets = FALSE;
1394 BOOL    strip_trailing_dot     = FALSE;
1395 uschar *submission_domain      = NULL;
1396 BOOL    submission_mode        = FALSE;
1397 uschar *submission_name        = NULL;
1398 BOOL    suppress_local_fixups  = FALSE;
1399 BOOL    suppress_local_fixups_default = FALSE;
1400 BOOL    synchronous_delivery   = FALSE;
1401 BOOL    syslog_duplication     = TRUE;
1402 int     syslog_facility        = LOG_MAIL;
1403 BOOL    syslog_pid             = TRUE;
1404 uschar *syslog_processname     = US"exim";
1405 BOOL    syslog_timestamp       = TRUE;
1406 uschar *system_filter          = NULL;
1407
1408 uschar *system_filter_directory_transport = NULL;
1409 uschar *system_filter_file_transport = NULL;
1410 uschar *system_filter_pipe_transport = NULL;
1411 uschar *system_filter_reply_transport = NULL;
1412
1413 gid_t   system_filter_gid      = 0;
1414 BOOL    system_filter_gid_set  = FALSE;
1415 uid_t   system_filter_uid      = (uid_t)-1;
1416 BOOL    system_filter_uid_set  = FALSE;
1417 BOOL    system_filtering       = FALSE;
1418
1419 BOOL    tcp_fastopen_ok        = FALSE;
1420 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1421 BOOL    tcp_in_fastopen        = FALSE;
1422 BOOL    tcp_in_fastopen_logged = FALSE;
1423 BOOL    tcp_nodelay            = TRUE;
1424 BOOL    tcp_out_fastopen       = FALSE;
1425 BOOL    tcp_out_fastopen_logged= FALSE;
1426 #ifdef USE_TCP_WRAPPERS
1427 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1428 #endif
1429 int     test_harness_load_avg  = 0;
1430 int     thismessage_size_limit = 0;
1431 int     timeout_frozen_after   = 0;
1432 BOOL    timestamps_utc         = FALSE;
1433
1434 transport_instance  *transports = NULL;
1435
1436 transport_instance  transport_defaults = {
1437     .next =                     NULL,
1438     .name =                     NULL,
1439     .info =                     NULL,
1440     .options_block =            NULL,
1441     .driver_name =              NULL,
1442     .setup =                    NULL,
1443     .batch_max =                1,
1444     .batch_id =                 NULL,
1445     .home_dir =                 NULL,
1446     .current_dir =              NULL,
1447     .expand_multi_domain =      NULL,
1448     .multi_domain =             TRUE,
1449     .overrides_hosts =          FALSE,
1450     .max_addresses =            100,
1451     .connection_max_messages =  500,
1452     .deliver_as_creator =       FALSE,
1453     .disable_logging =          FALSE,
1454     .initgroups =               FALSE,
1455     .uid_set =                  FALSE,
1456     .gid_set =                  FALSE,
1457     .uid =                      (uid_t)(-1),
1458     .gid =                      (gid_t)(-1),
1459     .expand_uid =               NULL,
1460     .expand_gid =               NULL,
1461     .warn_message =             NULL,
1462     .shadow =                   NULL,
1463     .shadow_condition =         NULL,
1464     .filter_command =           NULL,
1465     .add_headers =              NULL,
1466     .remove_headers =           NULL,
1467     .return_path =              NULL,
1468     .debug_string =             NULL,
1469     .max_parallel =             NULL,
1470     .message_size_limit =       NULL,
1471     .headers_rewrite =          NULL,
1472     .rewrite_rules =            NULL,
1473     .rewrite_existflags =       0,
1474     .filter_timeout =           300,
1475     .body_only =                FALSE,
1476     .delivery_date_add =        FALSE,
1477     .envelope_to_add =          FALSE,
1478     .headers_only =             FALSE,
1479     .rcpt_include_affixes =     FALSE,
1480     .return_path_add =          FALSE,
1481     .return_output =            FALSE,
1482     .return_fail_output =       FALSE,
1483     .log_output =               FALSE,
1484     .log_fail_output =          FALSE,
1485     .log_defer_output =         FALSE,
1486     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1487                                                  1 nor 0 so can detect unset */
1488 #ifndef DISABLE_EVENT
1489    .event_action =              NULL
1490 #endif
1491 };
1492
1493 int     transport_count;
1494 uschar *transport_name          = NULL;
1495 int     transport_newlines;
1496 const uschar **transport_filter_argv  = NULL;
1497 int     transport_filter_timeout;
1498 BOOL    transport_filter_timed_out = FALSE;
1499 int     transport_write_timeout= 0;
1500
1501 tree_node  *tree_dns_fails     = NULL;
1502 tree_node  *tree_duplicates    = NULL;
1503 tree_node  *tree_nonrecipients = NULL;
1504 tree_node  *tree_unusable      = NULL;
1505
1506 BOOL    trusted_caller         = FALSE;
1507 BOOL    trusted_config         = TRUE;
1508 gid_t  *trusted_groups         = NULL;
1509 uid_t  *trusted_users          = NULL;
1510 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1511
1512 uschar *unknown_login          = NULL;
1513 uschar *unknown_username       = NULL;
1514 uschar *untrusted_set_sender   = NULL;
1515
1516 /*  A regex for matching a "From_" line in an incoming message, in the form
1517
1518     From ph10 Fri Jan  5 12:35 GMT 1996
1519
1520 which  the "mail" commands send to the MTA (undocumented, of course), or in
1521 the  form
1522
1523     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1524
1525 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1526 Because  of variations in time formats, just match up to the minutes. That
1527 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1528 so  just require one digit for hours and minutes. The weekday is also absent
1529 in  some forms. */
1530
1531 uschar *uucp_from_pattern      = US
1532    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1533    "(?:"                                          /* Non-extracting bracket */
1534    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1535    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1536    ")"                                            /* End alternation */
1537    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1538
1539 uschar *uucp_from_sender       = US"$1";
1540
1541 uschar *verify_mode            = NULL;
1542 uschar *version_copyright      =
1543  US"Copyright (c) University of Cambridge, 1995 - 2017\n"
1544    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017";
1545 uschar *version_date           = US"?";
1546 uschar *version_cnumber        = US"????";
1547 uschar *version_string         = US"?";
1548
1549 uschar *warn_message_file      = NULL;
1550 int     warning_count          = 0;
1551 uschar *warnmsg_delay          = NULL;
1552 uschar *warnmsg_recipients     = NULL;
1553 BOOL    write_rejectlog        = TRUE;
1554
1555
1556 /*  End of globals.c */