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_overall      = NULL;
 671 uschar *dkim_verify_signers      = US"$dkim_signers";
 672 uschar *dkim_verify_status       = NULL;
 673 uschar *dkim_verify_reason       = NULL;
 674 #endif
 675 #ifdef EXPERIMENTAL_DMARC
 676 BOOL    dmarc_has_been_checked  = FALSE;
 677 uschar *dmarc_ar_header         = NULL;
 678 uschar *dmarc_domain_policy     = NULL;
 679 uschar *dmarc_forensic_sender   = NULL;
 680 uschar *dmarc_history_file      = NULL;
 681 uschar *dmarc_status            = NULL;
 682 uschar *dmarc_status_text       = NULL;
 683 uschar *dmarc_tld_file          = NULL;
 684 uschar *dmarc_used_domain       = NULL;
 685 BOOL    dmarc_disable_verify    = FALSE;
 686 BOOL    dmarc_enable_forensic   = FALSE;
 687 #endif
 688
 689 uschar *dns_again_means_nonexist = NULL;
 690 int     dns_csa_search_limit   = 5;
 691 BOOL    dns_csa_use_reverse    = TRUE;
 692 #ifdef EXPERIMENTAL_DANE
 693 int     dns_dane_ok            = -1;
 694 #endif
 695 uschar *dns_ipv4_lookup        = NULL;
 696 int     dns_retrans            = 0;
 697 int     dns_retry              = 0;
 698 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 699 uschar *dns_trust_aa           = NULL;
 700 int     dns_use_edns0          = -1; /* <0 = not coerced */
 701 uschar *dnslist_domain         = NULL;
 702 uschar *dnslist_matched        = NULL;
 703 uschar *dnslist_text           = NULL;
 704 uschar *dnslist_value          = NULL;
 705 tree_node *domainlist_anchor   = NULL;
 706 int     domainlist_count       = 0;
 707 BOOL    dont_deliver           = FALSE;
 708 BOOL    dot_ends               = TRUE;
 709 BOOL    drop_cr                = FALSE;         /* No longer used */
 710 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 711
 712 BOOL    enable_dollar_recipients = FALSE;
 713 BOOL    envelope_to_remove     = TRUE;
 714 int     errno_quota            = ERRNO_QUOTA;
 715 uschar *errors_copy            = NULL;
 716 int     error_handling         = ERRORS_SENDER;
 717 uschar *errors_reply_to        = NULL;
 718 int     errors_sender_rc       = EXIT_FAILURE;
 719 #ifndef DISABLE_EVENT
 720 uschar *event_action             = NULL;        /* expansion for delivery events */
 721 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 722 int     event_defer_errno        = 0;
 723 const uschar *event_name         = NULL;        /* event name variable */
 724 #endif
 725
 726
 727 gid_t   exim_gid               = EXIM_GID;
 728 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 729 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 730                         "\0<---------------Space to patch exim_path->";
 731 uid_t   exim_uid               = EXIM_UID;
 732 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 733 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 734 int     expand_forbid          = 0;
 735 int     expand_nlength[EXPAND_MAXN+1];
 736 int     expand_nmax            = -1;
 737 uschar *expand_nstring[EXPAND_MAXN+1];
 738 BOOL    expand_string_forcedfail = FALSE;
 739 uschar *expand_string_message;
 740 BOOL    extract_addresses_remove_arguments = TRUE;
 741 uschar *extra_local_interfaces = NULL;
 742
 743 int     fake_response          = OK;
 744 uschar *fake_response_text     = US"Your message has been rejected but is "
 745                                    "being kept for evaluation.\nIf it was a "
 746                                    "legitimate message, it may still be "
 747                                    "delivered to the target recipient(s).";
 748 int     filter_n[FILTER_VARIABLE_COUNT];
 749 BOOL    filter_running         = FALSE;
 750 int     filter_sn[FILTER_VARIABLE_COUNT];
 751 int     filter_test            = FTEST_NONE;
 752 uschar *filter_test_sfile      = NULL;
 753 uschar *filter_test_ufile      = NULL;
 754 uschar *filter_thisaddress     = NULL;
 755 int     finduser_retries       = 0;
 756 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 757 uschar *freeze_tell            = NULL;
 758 uschar *freeze_tell_config     = NULL;
 759 uschar *fudged_queue_times     = US"";
 760
 761 uschar *gecos_name             = NULL;
 762 uschar *gecos_pattern          = NULL;
 763 rewrite_rule  *global_rewrite_rules = NULL;
 764
 765 uschar *headers_charset        = US HEADERS_CHARSET;
 766 int     header_insert_maxlen   = 64 * 1024;
 767 header_line  *header_last      = NULL;
 768 header_line  *header_list      = NULL;
 769 int     header_maxsize         = HEADER_MAXSIZE;
 770 int     header_line_maxsize    = 0;
 771
 772 header_name header_names[] = {
 773   /* name               len     allow_resent    htype */
 774   { US"bcc",            3,      TRUE,           htype_bcc },
 775   { US"cc",             2,      TRUE,           htype_cc },
 776   { US"date",           4,      TRUE,           htype_date },
 777   { US"delivery-date", 13,      FALSE,          htype_delivery_date },
 778   { US"envelope-to",   11,      FALSE,          htype_envelope_to },
 779   { US"from",           4,      TRUE,           htype_from },
 780   { US"message-id",    10,      TRUE,           htype_id },
 781   { US"received",       8,      FALSE,          htype_received },
 782   { US"reply-to",       8,      FALSE,          htype_reply_to },
 783   { US"return-path",   11,      FALSE,          htype_return_path },
 784   { US"sender",         6,      TRUE,           htype_sender },
 785   { US"subject",        7,      FALSE,          htype_subject },
 786   { US"to",             2,      TRUE,           htype_to }
 787 };
 788
 789 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 790
 791 BOOL    header_rewritten       = FALSE;
 792 uschar *helo_accept_junk_hosts = NULL;
 793 uschar *helo_allow_chars       = US"";
 794 uschar *helo_lookup_domains    = US"@ : @[]";
 795 uschar *helo_try_verify_hosts  = NULL;
 796 BOOL    helo_verified          = FALSE;
 797 BOOL    helo_verify_failed     = FALSE;
 798 uschar *helo_verify_hosts      = NULL;
 799 const uschar *hex_digits       = CUS"0123456789abcdef";
 800 uschar *hold_domains           = NULL;
 801 BOOL    host_checking          = FALSE;
 802 BOOL    host_checking_callout  = FALSE;
 803 uschar *host_data              = NULL;
 804 BOOL    host_find_failed_syntax= FALSE;
 805 uschar *host_lookup            = NULL;
 806 BOOL    host_lookup_deferred   = FALSE;
 807 BOOL    host_lookup_failed     = FALSE;
 808 uschar *host_lookup_order      = US"bydns:byaddr";
 809 uschar *host_lookup_msg        = US"";
 810 int     host_number            = 0;
 811 uschar *host_number_string     = NULL;
 812 uschar *host_reject_connection = NULL;
 813 tree_node *hostlist_anchor     = NULL;
 814 int     hostlist_count         = 0;
 815 uschar *hosts_treat_as_local   = NULL;
 816 uschar *hosts_connection_nolog = NULL;
 817
 818 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 819 BOOL    ignore_fromline_local  = FALSE;
 820 uschar *ignore_fromline_hosts  = NULL;
 821 BOOL    inetd_wait_mode        = FALSE;
 822 int     inetd_wait_timeout     = -1;
 823 uschar *initial_cwd            = NULL;
 824 uschar *interface_address      = NULL;
 825 int     interface_port         = -1;
 826 BOOL    is_inetd               = FALSE;
 827 uschar *iterate_item           = NULL;
 828
 829 int     journal_fd             = -1;
 830
 831 uschar *keep_environment       = NULL;
 832
 833 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 834
 835 uschar *eldap_dn               = NULL;
 836 int     load_average           = -2;
 837 BOOL    local_error_message    = FALSE;
 838 BOOL    local_from_check       = TRUE;
 839 uschar *local_from_prefix      = NULL;
 840 uschar *local_from_suffix      = NULL;
 841
 842 #if HAVE_IPV6
 843 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 844 #else
 845 uschar *local_interfaces       = US"0.0.0.0";
 846 #endif
 847
 848 uschar *local_scan_data        = NULL;
 849 int     local_scan_timeout     = 5*60;
 850 BOOL    local_sender_retain    = FALSE;
 851 gid_t   local_user_gid         = (gid_t)(-1);
 852 uid_t   local_user_uid         = (uid_t)(-1);
 853
 854 tree_node *localpartlist_anchor= NULL;
 855 int     localpartlist_count    = 0;
 856 uschar *log_buffer             = NULL;
 857
 858 int     log_default[]          = { /* for initializing log_selector */
 859   Li_acl_warn_skipped,
 860   Li_connection_reject,
 861   Li_delay_delivery,
 862   Li_dkim,
 863   Li_dnslist_defer,
 864   Li_etrn,
 865   Li_host_lookup_failed,
 866   Li_lost_incoming_connection,
 867   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 868   Li_queue_run,
 869   Li_rejected_header,
 870   Li_retry_defer,
 871   Li_sender_verify_fail,
 872   Li_size_reject,
 873   Li_skip_delivery,
 874   Li_smtp_confirmation,
 875   Li_tls_certificate_verified,
 876   Li_tls_cipher,
 877   -1
 878 };
 879
 880 uschar *log_file_path          = US LOG_FILE_PATH
 881                            "\0<--------------Space to patch log_file_path->";
 882
 883 int     log_notall[]           = {
 884   -1
 885 };
 886 bit_table log_options[]        = { /* must be in alphabetical order */
 887   BIT_TABLE(L, 8bitmime),
 888   BIT_TABLE(L, acl_warn_skipped),
 889   BIT_TABLE(L, address_rewrite),
 890   BIT_TABLE(L, all),
 891   BIT_TABLE(L, all_parents),
 892   BIT_TABLE(L, arguments),
 893   BIT_TABLE(L, connection_reject),
 894   BIT_TABLE(L, delay_delivery),
 895   BIT_TABLE(L, deliver_time),
 896   BIT_TABLE(L, delivery_size),
 897 #ifndef DISABLE_DKIM
 898   BIT_TABLE(L, dkim),
 899   BIT_TABLE(L, dkim_verbose),
 900 #endif
 901   BIT_TABLE(L, dnslist_defer),
 902   BIT_TABLE(L, dnssec),
 903   BIT_TABLE(L, etrn),
 904   BIT_TABLE(L, host_lookup_failed),
 905   BIT_TABLE(L, ident_timeout),
 906   BIT_TABLE(L, incoming_interface),
 907   BIT_TABLE(L, incoming_port),
 908   BIT_TABLE(L, lost_incoming_connection),
 909   BIT_TABLE(L, millisec),
 910   BIT_TABLE(L, outgoing_interface),
 911   BIT_TABLE(L, outgoing_port),
 912   BIT_TABLE(L, pid),
 913 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
 914   BIT_TABLE(L, proxy),
 915 #endif
 916   BIT_TABLE(L, queue_run),
 917   BIT_TABLE(L, queue_time),
 918   BIT_TABLE(L, queue_time_overall),
 919   BIT_TABLE(L, receive_time),
 920   BIT_TABLE(L, received_recipients),
 921   BIT_TABLE(L, received_sender),
 922   BIT_TABLE(L, rejected_header),
 923   { US"rejected_headers", Li_rejected_header },
 924   BIT_TABLE(L, retry_defer),
 925   BIT_TABLE(L, return_path_on_delivery),
 926   BIT_TABLE(L, sender_on_delivery),
 927   BIT_TABLE(L, sender_verify_fail),
 928   BIT_TABLE(L, size_reject),
 929   BIT_TABLE(L, skip_delivery),
 930   BIT_TABLE(L, smtp_confirmation),
 931   BIT_TABLE(L, smtp_connection),
 932   BIT_TABLE(L, smtp_incomplete_transaction),
 933   BIT_TABLE(L, smtp_mailauth),
 934   BIT_TABLE(L, smtp_no_mail),
 935   BIT_TABLE(L, smtp_protocol_error),
 936   BIT_TABLE(L, smtp_syntax_error),
 937   BIT_TABLE(L, subject),
 938   BIT_TABLE(L, tls_certificate_verified),
 939   BIT_TABLE(L, tls_cipher),
 940   BIT_TABLE(L, tls_peerdn),
 941   BIT_TABLE(L, tls_sni),
 942   BIT_TABLE(L, unknown_in_list),
 943 };
 944 int     log_options_count      = nelem(log_options);
 945
 946 int     log_reject_target      = 0;
 947 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 948 uschar *log_selector_string    = NULL;
 949 FILE   *log_stderr             = NULL;
 950 BOOL    log_testing_mode       = FALSE;
 951 BOOL    log_timezone           = FALSE;
 952 uschar *login_sender_address   = NULL;
 953 uschar *lookup_dnssec_authenticated = NULL;
 954 int     lookup_open_max        = 25;
 955 uschar *lookup_value           = NULL;
 956
 957 uschar *mailstore_basename     = NULL;
 958 #ifdef WITH_CONTENT_SCAN
 959 uschar *malware_name           = NULL;  /* Virus Name */
 960 #endif
 961 int     max_received_linelength= 0;
 962 int     max_username_length    = 0;
 963 int     message_age            = 0;
 964 uschar *message_body           = NULL;
 965 uschar *message_body_end       = NULL;
 966 BOOL    message_body_newlines  = FALSE;
 967 int     message_body_size      = 0;
 968 int     message_body_visible   = 500;
 969 int     message_ended          = END_NOTSTARTED;
 970 uschar *message_headers        = NULL;
 971 uschar *message_id;
 972 uschar *message_id_domain      = NULL;
 973 uschar *message_id_text        = NULL;
 974 struct timeval message_id_tv   = { 0, 0 };
 975 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 976 uschar *message_id_external;
 977 int     message_linecount      = 0;
 978 BOOL    message_logs           = TRUE;
 979 int     message_size           = 0;
 980 uschar *message_size_limit     = US"50M";
 981 #ifdef SUPPORT_I18N
 982 BOOL    message_smtputf8       = FALSE;
 983 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 984 #endif
 985 uschar  message_subdir[2]      = { 0, 0 };
 986 uschar *message_reference      = NULL;
 987
 988 /* MIME ACL expandables */
 989 #ifdef WITH_CONTENT_SCAN
 990 int     mime_anomaly_level     = 0;
 991 const uschar *mime_anomaly_text      = NULL;
 992 uschar *mime_boundary          = NULL;
 993 uschar *mime_charset           = NULL;
 994 uschar *mime_content_description = NULL;
 995 uschar *mime_content_disposition = NULL;
 996 uschar *mime_content_id        = NULL;
 997 unsigned int mime_content_size = 0;
 998 uschar *mime_content_transfer_encoding = NULL;
 999 uschar *mime_content_type      = NULL;
1000 uschar *mime_decoded_filename  = NULL;
1001 uschar *mime_filename          = NULL;
1002 int     mime_is_multipart      = 0;
1003 int     mime_is_coverletter    = 0;
1004 int     mime_is_rfc822         = 0;
1005 int     mime_part_count        = -1;
1006 #endif
1007
1008 BOOL    mua_wrapper            = FALSE;
1009
1010 uid_t  *never_users            = NULL;
1011 #ifdef WITH_CONTENT_SCAN
1012 BOOL    no_mbox_unspool        = FALSE;
1013 #endif
1014 BOOL    no_multiline_responses = FALSE;
1015
1016 const int on                   = 1;     /* for setsockopt */
1017 const int off                  = 0;
1018
1019 uid_t   original_euid;
1020 gid_t   originator_gid;
1021 uschar *originator_login       = NULL;
1022 uschar *originator_name        = NULL;
1023 uid_t   originator_uid;
1024 uschar *override_local_interfaces = NULL;
1025 uschar *override_pid_file_path = NULL;
1026
1027 BOOL    parse_allow_group      = FALSE;
1028 BOOL    parse_found_group      = FALSE;
1029 uschar *percent_hack_domains   = NULL;
1030 uschar *pid_file_path          = US PID_FILE_PATH
1031                            "\0<--------------Space to patch pid_file_path->";
1032 BOOL    pipelining_enable      = TRUE;
1033 uschar *pipelining_advertise_hosts = US"*";
1034 BOOL    preserve_message_logs  = FALSE;
1035 uschar *primary_hostname       = NULL;
1036 BOOL    print_topbitchars      = FALSE;
1037 uschar  process_info[PROCESS_INFO_SIZE];
1038 int     process_info_len       = 0;
1039 uschar *process_log_path       = NULL;
1040 BOOL    prod_requires_admin    = TRUE;
1041
1042 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1043 uschar *hosts_proxy            = US"";
1044 uschar *proxy_external_address = US"";
1045 int     proxy_external_port    = 0;
1046 uschar *proxy_local_address    = US"";
1047 int     proxy_local_port       = 0;
1048 BOOL    proxy_session          = FALSE;
1049 BOOL    proxy_session_failed   = FALSE;
1050 #endif
1051
1052 uschar *prvscheck_address      = NULL;
1053 uschar *prvscheck_keynum       = NULL;
1054 uschar *prvscheck_result       = NULL;
1055
1056
1057 const uschar *qualify_domain_recipient = NULL;
1058 uschar *qualify_domain_sender  = NULL;
1059 BOOL    queue_2stage           = FALSE;
1060 uschar *queue_domains          = NULL;
1061 int     queue_interval         = -1;
1062 BOOL    queue_list_requires_admin = TRUE;
1063 uschar *queue_name             = US"";
1064 BOOL    queue_only             = FALSE;
1065 uschar *queue_only_file        = NULL;
1066 int     queue_only_load        = -1;
1067 BOOL    queue_only_load_latch  = TRUE;
1068 BOOL    queue_only_override    = TRUE;
1069 BOOL    queue_only_policy      = FALSE;
1070 BOOL    queue_run_first_delivery = FALSE;
1071 BOOL    queue_run_force        = FALSE;
1072 BOOL    queue_run_in_order     = FALSE;
1073 BOOL    queue_run_local        = FALSE;
1074 uschar *queue_run_max          = US"5";
1075 pid_t   queue_run_pid          = (pid_t)0;
1076 int     queue_run_pipe         = -1;
1077 BOOL    queue_running          = FALSE;
1078 BOOL    queue_smtp             = FALSE;
1079 uschar *queue_smtp_domains     = NULL;
1080
1081 unsigned int random_seed       = 0;
1082 tree_node *ratelimiters_cmd    = NULL;
1083 tree_node *ratelimiters_conn   = NULL;
1084 tree_node *ratelimiters_mail   = NULL;
1085 uschar *raw_active_hostname    = NULL;
1086 uschar *raw_sender             = NULL;
1087 uschar **raw_recipients        = NULL;
1088 int     raw_recipients_count   = 0;
1089
1090 int     rcpt_count             = 0;
1091 int     rcpt_fail_count        = 0;
1092 int     rcpt_defer_count       = 0;
1093 gid_t   real_gid;
1094 uid_t   real_uid;
1095 BOOL    really_exim            = TRUE;
1096 BOOL    receive_call_bombout   = FALSE;
1097 int     receive_linecount      = 0;
1098 int     receive_messagecount   = 0;
1099 int     receive_timeout        = 0;
1100 int     received_count         = 0;
1101 uschar *received_for           = NULL;
1102
1103 /*  This is the default text for Received headers generated by Exim. The
1104 date  will be automatically added on the end. */
1105
1106 uschar *received_header_text   = US
1107      "Received: "
1108      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1109      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1110      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1111      "by $primary_hostname "
1112      "${if def:received_protocol {with $received_protocol}} "
1113      #ifdef SUPPORT_TLS
1114      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1115      #endif
1116      "(Exim $version_number)\n\t"
1117      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1118      "id $message_exim_id"
1119      "${if def:received_for {\n\tfor $received_for}}"
1120      "\0<---------------Space to patch received_header_text->";
1121
1122 int     received_headers_max   = 30;
1123 uschar *received_protocol      = NULL;
1124 struct timeval received_time   = { 0, 0 };
1125 struct timeval received_time_taken = { 0, 0 };
1126 uschar *recipient_data         = NULL;
1127 uschar *recipient_unqualified_hosts = NULL;
1128 uschar *recipient_verify_failure = NULL;
1129 int     recipients_count       = 0;
1130 BOOL    recipients_discarded   = FALSE;
1131 recipient_item  *recipients_list = NULL;
1132 int     recipients_list_max    = 0;
1133 int     recipients_max         = 0;
1134 BOOL    recipients_max_reject  = FALSE;
1135 const pcre *regex_AUTH         = NULL;
1136 const pcre *regex_check_dns_names = NULL;
1137 const pcre *regex_From         = NULL;
1138 const pcre *regex_IGNOREQUOTA  = NULL;
1139 const pcre *regex_PIPELINING   = NULL;
1140 const pcre *regex_SIZE         = NULL;
1141 const pcre *regex_ismsgid      = NULL;
1142 const pcre *regex_smtp_code    = NULL;
1143 uschar *regex_vars[REGEX_VARS];
1144 #ifdef WHITELIST_D_MACROS
1145 const pcre *regex_whitelisted_macro = NULL;
1146 #endif
1147 #ifdef WITH_CONTENT_SCAN
1148 uschar *regex_match_string     = NULL;
1149 #endif
1150 int     remote_delivery_count  = 0;
1151 int     remote_max_parallel    = 2;
1152 uschar *remote_sort_domains    = NULL;
1153 int     retry_data_expire      = 7*24*60*60;
1154 int     retry_interval_max     = 24*60*60;
1155 int     retry_maximum_timeout  = 0;        /* set from retry config */
1156 retry_config  *retries         = NULL;
1157 uschar *return_path            = NULL;
1158 BOOL    return_path_remove     = TRUE;
1159 int     rewrite_existflags     = 0;
1160 uschar *rfc1413_hosts          = US"@[]";
1161 int     rfc1413_query_timeout  = 0;
1162 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1163 uid_t   root_gid               = ROOT_GID;
1164 uid_t   root_uid               = ROOT_UID;
1165
1166 router_instance  *routers  = NULL;
1167 router_instance  router_defaults = {
1168     .next =                     NULL,
1169     .name =                     NULL,
1170     .info =                     NULL,
1171     .options_block =            NULL,
1172     .driver_name =              NULL,
1173
1174     .address_data =             NULL,
1175 #ifdef EXPERIMENTAL_BRIGHTMAIL
1176     .bmi_rule =                 NULL,
1177 #endif
1178     .cannot_route_message =     NULL,
1179     .condition =                NULL,
1180     .current_directory =        NULL,
1181     .debug_string =             NULL,
1182     .domains =                  NULL,
1183     .errors_to =                NULL,
1184     .expand_gid =               NULL,
1185     .expand_uid =               NULL,
1186     .expand_more =              NULL,
1187     .expand_unseen =            NULL,
1188     .extra_headers =            NULL,
1189     .fallback_hosts =           NULL,
1190     .home_directory =           NULL,
1191     .ignore_target_hosts =      NULL,
1192     .local_parts =              NULL,
1193     .pass_router_name =         NULL,
1194     .prefix =                   NULL,
1195     .redirect_router_name =     NULL,
1196     .remove_headers =           NULL,
1197     .require_files =            NULL,
1198     .router_home_directory =    NULL,
1199     .self =                     US"freeze",
1200     .senders =                  NULL,
1201     .suffix =                   NULL,
1202     .translate_ip_address =     NULL,
1203     .transport_name =           NULL,
1204
1205     .address_test =             TRUE,
1206 #ifdef EXPERIMENTAL_BRIGHTMAIL
1207     .bmi_deliver_alternate =    FALSE,
1208     .bmi_deliver_default =      FALSE,
1209     .bmi_dont_deliver =         FALSE,
1210 #endif
1211     .expn =                     TRUE,
1212     .caseful_local_part =       FALSE,
1213     .check_local_user =         FALSE,
1214     .disable_logging =          FALSE,
1215     .fail_verify_recipient =    FALSE,
1216     .fail_verify_sender =       FALSE,
1217     .gid_set =                  FALSE,
1218     .initgroups =               FALSE,
1219     .log_as_local =             TRUE_UNSET,
1220     .more =                     TRUE,
1221     .pass_on_timeout =          FALSE,
1222     .prefix_optional =          FALSE,
1223     .repeat_use =               TRUE,
1224     .retry_use_local_part =     TRUE_UNSET,
1225     .same_domain_copy_routing = FALSE,
1226     .self_rewrite =             FALSE,
1227     .suffix_optional =          FALSE,
1228     .verify_only =              FALSE,
1229     .verify_recipient =         TRUE,
1230     .verify_sender =            TRUE,
1231     .uid_set =                  FALSE,
1232     .unseen =                   FALSE,
1233     .dsn_lasthop =              FALSE,
1234
1235     .self_code =                self_freeze,
1236     .uid =                      (uid_t)(-1),
1237     .gid =                      (gid_t)(-1),
1238
1239     .fallback_hostlist =        NULL,
1240     .transport =                NULL,
1241     .pass_router =              NULL,
1242     .redirect_router =          NULL,
1243
1244     .dnssec =                   { NULL, NULL },            /* dnssec_domains {require,request} */
1245 };
1246
1247 uschar *router_name            = NULL;
1248
1249 ip_address_item *running_interfaces = NULL;
1250 BOOL    running_in_test_harness = FALSE;
1251
1252 /* This is a weird one. The following string gets patched in the binary by the
1253 script that sets up a copy of Exim for running in the test harness. It seems
1254 that compilers are now clever, and share constant strings if they can.
1255 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1256 make use of the end of this string in order to save space. So the patching then
1257 wrecks this. We defeat this optimization by adding some additional characters
1258 onto the end of the string. */
1259
1260 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1261
1262 int     runrc                  = 0;
1263
1264 uschar *search_error_message   = NULL;
1265 BOOL    search_find_defer      = FALSE;
1266 uschar *self_hostname          = NULL;
1267 uschar *sender_address         = NULL;
1268 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1269 uschar *sender_address_data    = NULL;
1270 BOOL    sender_address_forced  = FALSE;
1271 uschar *sender_address_unrewritten = NULL;
1272 uschar *sender_data            = NULL;
1273 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1274 uschar *sender_fullhost        = NULL;
1275 BOOL    sender_helo_dnssec     = FALSE;
1276 uschar *sender_helo_name       = NULL;
1277 uschar **sender_host_aliases   = &no_aliases;
1278 uschar *sender_host_address    = NULL;
1279 uschar *sender_host_authenticated = NULL;
1280 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1281 BOOL    sender_host_dnssec     = FALSE;
1282 uschar *sender_host_name       = NULL;
1283 int     sender_host_port       = 0;
1284 BOOL    sender_host_notsocket  = FALSE;
1285 BOOL    sender_host_unknown    = FALSE;
1286 uschar *sender_ident           = NULL;
1287 BOOL    sender_local           = FALSE;
1288 BOOL    sender_name_forced     = FALSE;
1289 uschar *sender_rate            = NULL;
1290 uschar *sender_rate_limit      = NULL;
1291 uschar *sender_rate_period     = NULL;
1292 uschar *sender_rcvhost         = NULL;
1293 BOOL    sender_set_untrusted   = FALSE;
1294 uschar *sender_unqualified_hosts = NULL;
1295 uschar *sender_verify_failure = NULL;
1296 address_item *sender_verified_list  = NULL;
1297 address_item *sender_verified_failed = NULL;
1298 int     sender_verified_rc     = -1;
1299 BOOL    sender_verified_responded = FALSE;
1300 uschar *sending_ip_address     = NULL;
1301 int     sending_port           = -1;
1302 SIGNAL_BOOL sigalrm_seen       = FALSE;
1303 uschar **sighup_argv           = NULL;
1304 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1305 int     smtp_accept_count      = 0;
1306 BOOL    smtp_accept_keepalive  = TRUE;
1307 int     smtp_accept_max        = 20;
1308 int     smtp_accept_max_nonmail= 10;
1309 uschar *smtp_accept_max_nonmail_hosts = US"*";
1310 int     smtp_accept_max_per_connection = 1000;
1311 uschar *smtp_accept_max_per_host = NULL;
1312 int     smtp_accept_queue      = 0;
1313 int     smtp_accept_queue_per_connection = 10;
1314 int     smtp_accept_reserve    = 0;
1315 uschar *smtp_active_hostname   = NULL;
1316 BOOL    smtp_authenticated     = FALSE;
1317 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1318                              "Exim $version_number $tod_full"
1319                              "\0<---------------Space to patch smtp_banner->";
1320 BOOL    smtp_batched_input     = FALSE;
1321 BOOL    smtp_check_spool_space = TRUE;
1322 int     smtp_ch_index          = 0;
1323 uschar *smtp_cmd_argument      = NULL;
1324 uschar *smtp_cmd_buffer        = NULL;
1325 struct timeval smtp_connection_start  = {0,0};
1326 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1327 int     smtp_connect_backlog   = 20;
1328 double  smtp_delay_mail        = 0.0;
1329 double  smtp_delay_rcpt        = 0.0;
1330 BOOL    smtp_enforce_sync      = TRUE;
1331 FILE   *smtp_in                = NULL;
1332 BOOL    smtp_input             = FALSE;
1333 int     smtp_load_reserve      = -1;
1334 int     smtp_mailcmd_count     = 0;
1335 FILE   *smtp_out               = NULL;
1336 uschar *smtp_etrn_command      = NULL;
1337 BOOL    smtp_etrn_serialize    = TRUE;
1338 int     smtp_max_synprot_errors= 3;
1339 int     smtp_max_unknown_commands = 3;
1340 uschar *smtp_notquit_reason    = NULL;
1341 uschar *smtp_ratelimit_hosts   = NULL;
1342 uschar *smtp_ratelimit_mail    = NULL;
1343 uschar *smtp_ratelimit_rcpt    = NULL;
1344 uschar *smtp_read_error        = US"";
1345 int     smtp_receive_timeout   = 5*60;
1346 uschar *smtp_receive_timeout_s = NULL;
1347 uschar *smtp_reserve_hosts     = NULL;
1348 BOOL    smtp_return_error_details = FALSE;
1349 int     smtp_rlm_base          = 0;
1350 double  smtp_rlm_factor        = 0.0;
1351 int     smtp_rlm_limit         = 0;
1352 int     smtp_rlm_threshold     = INT_MAX;
1353 int     smtp_rlr_base          = 0;
1354 double  smtp_rlr_factor        = 0.0;
1355 int     smtp_rlr_limit         = 0;
1356 int     smtp_rlr_threshold     = INT_MAX;
1357 unsigned smtp_peer_options     = 0;
1358 unsigned smtp_peer_options_wrap= 0;
1359 #ifdef SUPPORT_I18N
1360 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1361 #endif
1362
1363 #ifdef WITH_CONTENT_SCAN
1364 uschar *spamd_address          = US"127.0.0.1 783";
1365 uschar *spam_bar               = NULL;
1366 uschar *spam_report            = NULL;
1367 uschar *spam_action            = NULL;
1368 uschar *spam_score             = NULL;
1369 uschar *spam_score_int         = NULL;
1370 #endif
1371 #ifdef SUPPORT_SPF
1372 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1373 uschar *spf_header_comment     = NULL;
1374 uschar *spf_received           = NULL;
1375 uschar *spf_result             = NULL;
1376 uschar *spf_smtp_comment       = NULL;
1377 #endif
1378
1379 BOOL    split_spool_directory  = FALSE;
1380 uschar *spool_directory        = US SPOOL_DIRECTORY
1381                            "\0<--------------Space to patch spool_directory->";
1382 BOOL    spool_file_wireformat  = FALSE;
1383 BOOL    spool_wireformat       = FALSE;
1384 #ifdef EXPERIMENTAL_SRS
1385 uschar *srs_config             = NULL;
1386 uschar *srs_db_address         = NULL;
1387 uschar *srs_db_key             = NULL;
1388 int     srs_hashlength         = 6;
1389 int     srs_hashmin            = -1;
1390 int     srs_maxage             = 31;
1391 uschar *srs_orig_recipient     = NULL;
1392 uschar *srs_orig_sender        = NULL;
1393 uschar *srs_recipient          = NULL;
1394 uschar *srs_secrets            = NULL;
1395 uschar *srs_status             = NULL;
1396 BOOL    srs_usehash            = TRUE;
1397 BOOL    srs_usetimestamp       = TRUE;
1398 #endif
1399 BOOL    strict_acl_vars        = FALSE;
1400 int     string_datestamp_offset= -1;
1401 int     string_datestamp_length= 0;
1402 int     string_datestamp_type  = -1;
1403 BOOL    strip_excess_angle_brackets = FALSE;
1404 BOOL    strip_trailing_dot     = FALSE;
1405 uschar *submission_domain      = NULL;
1406 BOOL    submission_mode        = FALSE;
1407 uschar *submission_name        = NULL;
1408 BOOL    suppress_local_fixups  = FALSE;
1409 BOOL    suppress_local_fixups_default = FALSE;
1410 BOOL    synchronous_delivery   = FALSE;
1411 BOOL    syslog_duplication     = TRUE;
1412 int     syslog_facility        = LOG_MAIL;
1413 BOOL    syslog_pid             = TRUE;
1414 uschar *syslog_processname     = US"exim";
1415 BOOL    syslog_timestamp       = TRUE;
1416 uschar *system_filter          = NULL;
1417
1418 uschar *system_filter_directory_transport = NULL;
1419 uschar *system_filter_file_transport = NULL;
1420 uschar *system_filter_pipe_transport = NULL;
1421 uschar *system_filter_reply_transport = NULL;
1422
1423 gid_t   system_filter_gid      = 0;
1424 BOOL    system_filter_gid_set  = FALSE;
1425 uid_t   system_filter_uid      = (uid_t)-1;
1426 BOOL    system_filter_uid_set  = FALSE;
1427 BOOL    system_filtering       = FALSE;
1428
1429 BOOL    tcp_fastopen_ok        = FALSE;
1430 blob    tcp_fastopen_nodata    = { .data = NULL, .len = 0 };
1431 BOOL    tcp_in_fastopen        = FALSE;
1432 BOOL    tcp_in_fastopen_logged = FALSE;
1433 BOOL    tcp_nodelay            = TRUE;
1434 int     tcp_out_fastopen       = 0;
1435 BOOL    tcp_out_fastopen_logged= FALSE;
1436 #ifdef USE_TCP_WRAPPERS
1437 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1438 #endif
1439 int     test_harness_load_avg  = 0;
1440 int     thismessage_size_limit = 0;
1441 int     timeout_frozen_after   = 0;
1442 BOOL    timestamps_utc         = FALSE;
1443
1444 transport_instance  *transports = NULL;
1445
1446 transport_instance  transport_defaults = {
1447     .next =                     NULL,
1448     .name =                     NULL,
1449     .info =                     NULL,
1450     .options_block =            NULL,
1451     .driver_name =              NULL,
1452     .setup =                    NULL,
1453     .batch_max =                1,
1454     .batch_id =                 NULL,
1455     .home_dir =                 NULL,
1456     .current_dir =              NULL,
1457     .expand_multi_domain =      NULL,
1458     .multi_domain =             TRUE,
1459     .overrides_hosts =          FALSE,
1460     .max_addresses =            100,
1461     .connection_max_messages =  500,
1462     .deliver_as_creator =       FALSE,
1463     .disable_logging =          FALSE,
1464     .initgroups =               FALSE,
1465     .uid_set =                  FALSE,
1466     .gid_set =                  FALSE,
1467     .uid =                      (uid_t)(-1),
1468     .gid =                      (gid_t)(-1),
1469     .expand_uid =               NULL,
1470     .expand_gid =               NULL,
1471     .warn_message =             NULL,
1472     .shadow =                   NULL,
1473     .shadow_condition =         NULL,
1474     .filter_command =           NULL,
1475     .add_headers =              NULL,
1476     .remove_headers =           NULL,
1477     .return_path =              NULL,
1478     .debug_string =             NULL,
1479     .max_parallel =             NULL,
1480     .message_size_limit =       NULL,
1481     .headers_rewrite =          NULL,
1482     .rewrite_rules =            NULL,
1483     .rewrite_existflags =       0,
1484     .filter_timeout =           300,
1485     .body_only =                FALSE,
1486     .delivery_date_add =        FALSE,
1487     .envelope_to_add =          FALSE,
1488     .headers_only =             FALSE,
1489     .rcpt_include_affixes =     FALSE,
1490     .return_path_add =          FALSE,
1491     .return_output =            FALSE,
1492     .return_fail_output =       FALSE,
1493     .log_output =               FALSE,
1494     .log_fail_output =          FALSE,
1495     .log_defer_output =         FALSE,
1496     .retry_use_local_part =     TRUE_UNSET,     /* retry_use_local_part: BOOL, but set neither
1497                                                  1 nor 0 so can detect unset */
1498 #ifndef DISABLE_EVENT
1499    .event_action =              NULL
1500 #endif
1501 };
1502
1503 int     transport_count;
1504 uschar *transport_name          = NULL;
1505 int     transport_newlines;
1506 const uschar **transport_filter_argv  = NULL;
1507 int     transport_filter_timeout;
1508 BOOL    transport_filter_timed_out = FALSE;
1509 int     transport_write_timeout= 0;
1510
1511 tree_node  *tree_dns_fails     = NULL;
1512 tree_node  *tree_duplicates    = NULL;
1513 tree_node  *tree_nonrecipients = NULL;
1514 tree_node  *tree_unusable      = NULL;
1515
1516 BOOL    trusted_caller         = FALSE;
1517 BOOL    trusted_config         = TRUE;
1518 gid_t  *trusted_groups         = NULL;
1519 uid_t  *trusted_users          = NULL;
1520 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1521
1522 uschar *unknown_login          = NULL;
1523 uschar *unknown_username       = NULL;
1524 uschar *untrusted_set_sender   = NULL;
1525
1526 /*  A regex for matching a "From_" line in an incoming message, in the form
1527
1528     From ph10 Fri Jan  5 12:35 GMT 1996
1529
1530 which  the "mail" commands send to the MTA (undocumented, of course), or in
1531 the  form
1532
1533     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1534
1535 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1536 Because  of variations in time formats, just match up to the minutes. That
1537 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1538 so  just require one digit for hours and minutes. The weekday is also absent
1539 in  some forms. */
1540
1541 uschar *uucp_from_pattern      = US
1542    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1543    "(?:"                                          /* Non-extracting bracket */
1544    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1545    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1546    ")"                                            /* End alternation */
1547    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1548
1549 uschar *uucp_from_sender       = US"$1";
1550
1551 uschar *verify_mode            = NULL;
1552 uschar *version_copyright      =
1553  US"Copyright (c) University of Cambridge, 1995 - 2017\n"
1554    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017";
1555 uschar *version_date           = US"?";
1556 uschar *version_cnumber        = US"????";
1557 uschar *version_string         = US"?";
1558
1559 uschar *warn_message_file      = NULL;
1560 int     warning_count          = 0;
1561 uschar *warnmsg_delay          = NULL;
1562 uschar *warnmsg_recipients     = NULL;
1563 BOOL    write_rejectlog        = TRUE;
1564
1565
1566 /*  End of globals.c */