src/src/globals.c

   1 /*************************************************
   2 *     Exim - an Internet mail transport agent    *
   3 *************************************************/
   4
   5 /* Copyright (c) University of Cambridge 1995 - 2017 */
   6 /* See the file NOTICE for conditions of use and distribution. */
   7
   8 /* All the global variables are defined together in this one module, so
   9 that they are easy to find. */
  10
  11 #include "exim.h"
  12
  13
  14 /* Generic options for auths, all of which live inside auth_instance
  15 data blocks and hence have the opt_public flag set. */
  16
  17 optionlist optionlist_auths[] = {
  18   { "client_condition", opt_stringptr | opt_public,
  19                  (void *)(offsetof(auth_instance, client_condition)) },
  20   { "client_set_id", opt_stringptr | opt_public,
  21                  (void *)(offsetof(auth_instance, set_client_id)) },
  22   { "driver",        opt_stringptr | opt_public,
  23                  (void *)(offsetof(auth_instance, driver_name)) },
  24   { "public_name",   opt_stringptr | opt_public,
  25                  (void *)(offsetof(auth_instance, public_name)) },
  26   { "server_advertise_condition", opt_stringptr | opt_public,
  27                  (void *)(offsetof(auth_instance, advertise_condition))},
  28   { "server_condition", opt_stringptr | opt_public,
  29                  (void *)(offsetof(auth_instance, server_condition)) },
  30   { "server_debug_print", opt_stringptr | opt_public,
  31                  (void *)(offsetof(auth_instance, server_debug_string)) },
  32   { "server_mail_auth_condition", opt_stringptr | opt_public,
  33                  (void *)(offsetof(auth_instance, mail_auth_condition)) },
  34   { "server_set_id", opt_stringptr | opt_public,
  35                  (void *)(offsetof(auth_instance, set_id)) }
  36 };
  37
  38 int     optionlist_auths_size = nelem(optionlist_auths);
  39
  40 /* An empty host aliases list. */
  41
  42 uschar *no_aliases             = NULL;
  43
  44
  45 /* For comments on these variables, see globals.h. I'm too idle to
  46 duplicate them here... */
  47
  48 #ifdef EXIM_PERL
  49 uschar *opt_perl_startup       = NULL;
  50 BOOL    opt_perl_at_start      = FALSE;
  51 BOOL    opt_perl_started       = FALSE;
  52 BOOL    opt_perl_taintmode     = FALSE;
  53 #endif
  54
  55 #ifdef EXPAND_DLFUNC
  56 tree_node *dlobj_anchor        = NULL;
  57 #endif
  58
  59 #ifdef LOOKUP_IBASE
  60 uschar *ibase_servers          = NULL;
  61 #endif
  62
  63 #ifdef LOOKUP_LDAP
  64 uschar *eldap_ca_cert_dir      = NULL;
  65 uschar *eldap_ca_cert_file     = NULL;
  66 uschar *eldap_cert_file        = NULL;
  67 uschar *eldap_cert_key         = NULL;
  68 uschar *eldap_cipher_suite     = NULL;
  69 uschar *eldap_default_servers  = NULL;
  70 uschar *eldap_require_cert     = NULL;
  71 int     eldap_version          = -1;
  72 BOOL    eldap_start_tls        = FALSE;
  73 #endif
  74
  75 #ifdef LOOKUP_MYSQL
  76 uschar *mysql_servers          = NULL;
  77 #endif
  78
  79 #ifdef LOOKUP_ORACLE
  80 uschar *oracle_servers         = NULL;
  81 #endif
  82
  83 #ifdef LOOKUP_PGSQL
  84 uschar *pgsql_servers          = NULL;
  85 #endif
  86
  87 #ifdef LOOKUP_REDIS
  88 uschar *redis_servers          = NULL;
  89 #endif
  90
  91 #ifdef LOOKUP_SQLITE
  92 int     sqlite_lock_timeout    = 5;
  93 #endif
  94
  95 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  96 BOOL    move_frozen_messages   = FALSE;
  97 #endif
  98
  99 /* These variables are outside the #ifdef because it keeps the code less
 100 cluttered in several places (e.g. during logging) if we can always refer to
 101 them. Also, the tls_ variables are now always visible. */
 102
 103 tls_support tls_in = {
 104  -1,   /* tls_active */
 105  0,    /* tls_bits */
 106  FALSE,/* tls_certificate_verified */
 107 #ifdef EXPERIMENTAL_DANE
 108  FALSE,/* dane_verified */
 109  0,    /* tlsa_usage */
 110 #endif
 111  NULL, /* tls_cipher */
 112  FALSE,/* tls_on_connect */
 113  NULL, /* tls_on_connect_ports */
 114  NULL, /* tls_ourcert */
 115  NULL, /* tls_peercert */
 116  NULL, /* tls_peerdn */
 117  NULL, /* tls_sni */
 118  0     /* tls_ocsp */
 119 };
 120 tls_support tls_out = {
 121  -1,   /* tls_active */
 122  0,    /* tls_bits */
 123  FALSE,/* tls_certificate_verified */
 124 #ifdef EXPERIMENTAL_DANE
 125  FALSE,/* dane_verified */
 126  0,    /* tlsa_usage */
 127 #endif
 128  NULL, /* tls_cipher */
 129  FALSE,/* tls_on_connect */
 130  NULL, /* tls_on_connect_ports */
 131  NULL, /* tls_ourcert */
 132  NULL, /* tls_peercert */
 133  NULL, /* tls_peerdn */
 134  NULL, /* tls_sni */
 135  0     /* tls_ocsp */
 136 };
 137
 138 uschar *dsn_envid              = NULL;
 139 int     dsn_ret                = 0;
 140 const pcre  *regex_DSN         = NULL;
 141 uschar *dsn_advertise_hosts    = NULL;
 142
 143 #ifdef SUPPORT_TLS
 144 BOOL    gnutls_compat_mode     = FALSE;
 145 BOOL    gnutls_allow_auto_pkcs11 = FALSE;
 146 uschar *openssl_options        = NULL;
 147 const pcre *regex_STARTTLS     = NULL;
 148 uschar *tls_advertise_hosts    = US"*";
 149 uschar *tls_certificate        = NULL;
 150 uschar *tls_crl                = NULL;
 151 /* This default matches NSS DH_MAX_P_BITS value at current time (2012), because
 152 that's the interop problem which has been observed: GnuTLS suggesting a higher
 153 bit-count as "NORMAL" (2432) and Thunderbird dropping connection. */
 154 int     tls_dh_max_bits        = 2236;
 155 uschar *tls_dhparam            = NULL;
 156 uschar *tls_eccurve            = US"auto";
 157 # ifndef DISABLE_OCSP
 158 uschar *tls_ocsp_file          = NULL;
 159 # endif
 160 uschar *tls_privatekey         = NULL;
 161 BOOL    tls_remember_esmtp     = FALSE;
 162 uschar *tls_require_ciphers    = NULL;
 163 uschar *tls_try_verify_hosts   = NULL;
 164 uschar *tls_verify_certificates= US"system";
 165 uschar *tls_verify_hosts       = NULL;
 166 #else   /*!SUPPORT_TLS*/
 167 uschar *tls_advertise_hosts    = NULL;
 168 #endif
 169
 170 #ifndef DISABLE_PRDR
 171 /* Per Recipient Data Response variables */
 172 BOOL    prdr_enable            = FALSE;
 173 BOOL    prdr_requested         = FALSE;
 174 const pcre *regex_PRDR         = NULL;
 175 #endif
 176
 177 #ifdef SUPPORT_I18N
 178 const pcre *regex_UTF8         = NULL;
 179 #endif
 180
 181 /* Input-reading functions for messages, so we can use special ones for
 182 incoming TCP/IP. The defaults use stdin. We never need these for any
 183 stand-alone tests. */
 184
 185 #ifndef STAND_ALONE
 186 int (*lwr_receive_getc)(unsigned) = stdin_getc;
 187 int (*lwr_receive_ungetc)(int) = stdin_ungetc;
 188 int (*receive_getc)(unsigned)  = stdin_getc;
 189 void (*receive_get_cache)(void)= NULL;
 190 int (*receive_ungetc)(int)     = stdin_ungetc;
 191 int (*receive_feof)(void)      = stdin_feof;
 192 int (*receive_ferror)(void)    = stdin_ferror;
 193 BOOL (*receive_smtp_buffered)(void) = NULL;   /* Only used for SMTP */
 194 #endif
 195
 196
 197 /* List of per-address expansion variables for clearing and saving/restoring
 198 when verifying one address while routing/verifying another. We have to have
 199 the size explicit, because it is referenced from more than one module. */
 200
 201 const uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT] = {
 202   CUSS &deliver_address_data,
 203   CUSS &deliver_domain,
 204   CUSS &deliver_domain_data,
 205   CUSS &deliver_domain_orig,
 206   CUSS &deliver_domain_parent,
 207   CUSS &deliver_localpart,
 208   CUSS &deliver_localpart_data,
 209   CUSS &deliver_localpart_orig,
 210   CUSS &deliver_localpart_parent,
 211   CUSS &deliver_localpart_prefix,
 212   CUSS &deliver_localpart_suffix,
 213   CUSS (uschar **)(&deliver_recipients),
 214   CUSS &deliver_host,
 215   CUSS &deliver_home,
 216   CUSS &address_file,
 217   CUSS &address_pipe,
 218   CUSS &self_hostname,
 219   NULL };
 220
 221 int address_expansions_count = sizeof(address_expansions)/sizeof(uschar **);
 222
 223 /* General global variables */
 224
 225 header_line *acl_added_headers = NULL;
 226 tree_node *acl_anchor          = NULL;
 227 uschar *acl_arg[9]             = {NULL, NULL, NULL, NULL, NULL,
 228                                   NULL, NULL, NULL, NULL};
 229 int     acl_narg               = 0;
 230
 231 int     acl_level              = 0;
 232
 233 uschar *acl_not_smtp           = NULL;
 234 #ifdef WITH_CONTENT_SCAN
 235 uschar *acl_not_smtp_mime      = NULL;
 236 #endif
 237 uschar *acl_not_smtp_start     = NULL;
 238 uschar *acl_removed_headers    = NULL;
 239 uschar *acl_smtp_auth          = NULL;
 240 uschar *acl_smtp_connect       = NULL;
 241 uschar *acl_smtp_data          = NULL;
 242 #ifndef DISABLE_PRDR
 243 uschar *acl_smtp_data_prdr     = US"accept";
 244 #endif
 245 #ifndef DISABLE_DKIM
 246 uschar *acl_smtp_dkim          = NULL;
 247 #endif
 248 uschar *acl_smtp_etrn          = NULL;
 249 uschar *acl_smtp_expn          = NULL;
 250 uschar *acl_smtp_helo          = NULL;
 251 uschar *acl_smtp_mail          = NULL;
 252 uschar *acl_smtp_mailauth      = NULL;
 253 #ifdef WITH_CONTENT_SCAN
 254 uschar *acl_smtp_mime          = NULL;
 255 #endif
 256 uschar *acl_smtp_notquit       = NULL;
 257 uschar *acl_smtp_predata       = NULL;
 258 uschar *acl_smtp_quit          = NULL;
 259 uschar *acl_smtp_rcpt          = NULL;
 260 uschar *acl_smtp_starttls      = NULL;
 261 uschar *acl_smtp_vrfy          = NULL;
 262
 263 BOOL    acl_temp_details       = FALSE;
 264 tree_node *acl_var_c           = NULL;
 265 tree_node *acl_var_m           = NULL;
 266 uschar *acl_verify_message     = NULL;
 267 string_item *acl_warn_logged   = NULL;
 268
 269 /* Names of SMTP places for use in ACL error messages, and corresponding SMTP
 270 error codes - keep in step with definitions of ACL_WHERE_xxxx in macros.h. */
 271
 272 uschar *acl_wherenames[]       = { US"RCPT",
 273                                    US"MAIL",
 274                                    US"PREDATA",
 275                                    US"MIME",
 276                                    US"DKIM",
 277                                    US"DATA",
 278 #ifndef DISABLE_PRDR
 279                                    US"PRDR",
 280 #endif
 281                                    US"non-SMTP",
 282                                    US"AUTH",
 283                                    US"connection",
 284                                    US"ETRN",
 285                                    US"EXPN",
 286                                    US"EHLO or HELO",
 287                                    US"MAILAUTH",
 288                                    US"non-SMTP-start",
 289                                    US"NOTQUIT",
 290                                    US"QUIT",
 291                                    US"STARTTLS",
 292                                    US"VRFY",
 293                                    US"delivery",
 294                                    US"unknown"
 295                                  };
 296
 297 uschar *acl_wherecodes[]       = { US"550",     /* RCPT */
 298                                    US"550",     /* MAIL */
 299                                    US"550",     /* PREDATA */
 300                                    US"550",     /* MIME */
 301                                    US"550",     /* DKIM */
 302                                    US"550",     /* DATA */
 303 #ifndef DISABLE_PRDR
 304                                    US"550",    /* RCPT PRDR */
 305 #endif
 306                                    US"0",       /* not SMTP; not relevant */
 307                                    US"503",     /* AUTH */
 308                                    US"550",     /* connect */
 309                                    US"458",     /* ETRN */
 310                                    US"550",     /* EXPN */
 311                                    US"550",     /* HELO/EHLO */
 312                                    US"0",       /* MAILAUTH; not relevant */
 313                                    US"0",       /* not SMTP; not relevant */
 314                                    US"0",       /* NOTQUIT; not relevant */
 315                                    US"0",       /* QUIT; not relevant */
 316                                    US"550",     /* STARTTLS */
 317                                    US"252",     /* VRFY */
 318                                    US"0",       /* delivery; not relevant */
 319                                    US"0"        /* unknown; not relevant */
 320                                  };
 321
 322 BOOL    active_local_from_check = FALSE;
 323 BOOL    active_local_sender_retain = FALSE;
 324 BOOL    accept_8bitmime        = TRUE; /* deliberately not RFC compliant */
 325 uschar *add_environment        = NULL;
 326 address_item  *addr_duplicate  = NULL;
 327
 328 address_item address_defaults = {
 329   NULL,                 /* next */
 330   NULL,                 /* parent */
 331   NULL,                 /* first */
 332   NULL,                 /* dupof */
 333   NULL,                 /* start_router */
 334   NULL,                 /* router */
 335   NULL,                 /* transport */
 336   NULL,                 /* host_list */
 337   NULL,                 /* host_used */
 338   NULL,                 /* fallback_hosts */
 339   NULL,                 /* reply */
 340   NULL,                 /* retries */
 341   NULL,                 /* address */
 342   NULL,                 /* unique */
 343   NULL,                 /* cc_local_part */
 344   NULL,                 /* lc_local_part */
 345   NULL,                 /* local_part */
 346   NULL,                 /* prefix */
 347   NULL,                 /* suffix */
 348   NULL,                 /* domain */
 349   NULL,                 /* address_retry_key */
 350   NULL,                 /* domain_retry_key */
 351   NULL,                 /* current_dir */
 352   NULL,                 /* home_dir */
 353   NULL,                 /* message */
 354   NULL,                 /* user_message */
 355   NULL,                 /* onetime_parent */
 356   NULL,                 /* pipe_expandn */
 357   NULL,                 /* return_filename */
 358   NULL,                 /* self_hostname */
 359   NULL,                 /* shadow_message */
 360 #ifdef SUPPORT_TLS
 361   NULL,                 /* cipher */
 362   NULL,                 /* ourcert */
 363   NULL,                 /* peercert */
 364   NULL,                 /* peerdn */
 365   OCSP_NOT_REQ,         /* ocsp */
 366 #endif
 367 #ifdef EXPERIMENTAL_DSN_INFO
 368   NULL,                 /* smtp_greeting */
 369   NULL,                 /* helo_response */
 370 #endif
 371   NULL,                 /* authenticator */
 372   NULL,                 /* auth_id */
 373   NULL,                 /* auth_sndr */
 374   NULL,                 /* dsn_orcpt */
 375   0,                    /* dsn_flags */
 376   0,                    /* dsn_aware */
 377   (uid_t)(-1),          /* uid */
 378   (gid_t)(-1),          /* gid */
 379   0,                    /* flags */
 380   { 0 },                /* domain_cache - any larger array should be zeroed */
 381   { 0 },                /* localpart_cache - ditto */
 382   -1,                   /* mode */
 383   0,                    /* more_errno */
 384   ERRNO_UNKNOWNERROR,   /* basic_errno */
 385   0,                    /* child_count */
 386   -1,                   /* return_file */
 387   SPECIAL_NONE,         /* special_action */
 388   DEFER,                /* transport_return */
 389   {                     /* fields that are propagated to children */
 390     NULL,               /* address_data */
 391     NULL,               /* domain_data */
 392     NULL,               /* localpart_data */
 393     NULL,               /* errors_address */
 394     NULL,               /* extra_headers */
 395     NULL,               /* remove_headers */
 396 #ifdef EXPERIMENTAL_SRS
 397     NULL,               /* srs_sender */
 398 #endif
 399 #ifdef SUPPORT_I18N
 400     FALSE,              /* utf8 */
 401 #endif
 402   }
 403 };
 404
 405 uschar *address_file           = NULL;
 406 uschar *address_pipe           = NULL;
 407 BOOL    address_test_mode      = FALSE;
 408 tree_node *addresslist_anchor  = NULL;
 409 int     addresslist_count      = 0;
 410 gid_t  *admin_groups           = NULL;
 411 BOOL    admin_user             = FALSE;
 412 BOOL    allow_auth_unadvertised= FALSE;
 413 BOOL    allow_domain_literals  = FALSE;
 414 BOOL    allow_mx_to_ip         = FALSE;
 415 BOOL    allow_unqualified_recipient = TRUE;    /* For local messages */
 416 BOOL    allow_unqualified_sender = TRUE;       /* Reset for SMTP */
 417 BOOL    allow_utf8_domains     = FALSE;
 418 uschar *authenticated_fail_id  = NULL;
 419 uschar *authenticated_id       = NULL;
 420 uschar *authenticated_sender   = NULL;
 421 BOOL    authentication_failed  = FALSE;
 422 auth_instance  *auths          = NULL;
 423 uschar *auth_advertise_hosts   = US"*";
 424 auth_instance auth_defaults    = {
 425     NULL,                      /* chain pointer */
 426     NULL,                      /* name */
 427     NULL,                      /* info */
 428     NULL,                      /* private options block pointer */
 429     NULL,                      /* driver_name */
 430     NULL,                      /* advertise_condition */
 431     NULL,                      /* client_condition */
 432     NULL,                      /* public_name */
 433     NULL,                      /* set_id */
 434     NULL,                      /* set_client_id */
 435     NULL,                      /* server_mail_auth_condition */
 436     NULL,                      /* server_debug_string */
 437     NULL,                      /* server_condition */
 438     FALSE,                     /* client */
 439     FALSE,                     /* server */
 440     FALSE                      /* advertised */
 441 };
 442
 443 uschar *auth_defer_msg         = US"reason not recorded";
 444 uschar *auth_defer_user_msg    = US"";
 445 uschar *auth_vars[AUTH_VARS];
 446 int     auto_thaw              = 0;
 447 #ifdef WITH_CONTENT_SCAN
 448 BOOL    av_failed              = FALSE;
 449 uschar *av_scanner             = US"sophie:/var/run/sophie";  /* AV scanner */
 450 #endif
 451
 452 BOOL    background_daemon      = TRUE;
 453
 454 #if BASE_62 == 62
 455 uschar *base62_chars=
 456     US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 457 #else
 458 uschar *base62_chars= US"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
 459 #endif
 460
 461 uschar *bi_command             = NULL;
 462 uschar *big_buffer             = NULL;
 463 int     big_buffer_size        = BIG_BUFFER_SIZE;
 464 #ifdef EXPERIMENTAL_BRIGHTMAIL
 465 uschar *bmi_alt_location       = NULL;
 466 uschar *bmi_base64_tracker_verdict = NULL;
 467 uschar *bmi_base64_verdict     = NULL;
 468 uschar *bmi_config_file        = US"/opt/brightmail/etc/brightmail.cfg";
 469 int     bmi_deliver            = 1;
 470 int     bmi_run                = 0;
 471 uschar *bmi_verdicts           = NULL;
 472 #endif
 473 int     body_8bitmime          = 0;
 474 int     body_linecount         = 0;
 475 int     body_zerocount         = 0;
 476 uschar *bounce_message_file    = NULL;
 477 uschar *bounce_message_text    = NULL;
 478 uschar *bounce_recipient       = NULL;
 479 BOOL    bounce_return_body     = TRUE;
 480 int     bounce_return_linesize_limit = 998;
 481 BOOL    bounce_return_message  = TRUE;
 482 int     bounce_return_size_limit = 100*1024;
 483 uschar *bounce_sender_authentication = NULL;
 484 int     bsmtp_transaction_linecount = 0;
 485
 486 uschar *callout_address        = NULL;
 487 int     callout_cache_domain_positive_expire = 7*24*60*60;
 488 int     callout_cache_domain_negative_expire = 3*60*60;
 489 int     callout_cache_positive_expire = 24*60*60;
 490 int     callout_cache_negative_expire = 2*60*60;
 491 uschar *callout_random_local_part = US"$primary_hostname-$tod_epoch-testing";
 492 uschar *check_dns_names_pattern= US"(?i)^(?>(?(1)\\.|())[^\\W](?>[a-z0-9/_-]*[^\\W])?)+(\\.?)$";
 493 int     check_log_inodes       = 100;
 494 int     check_log_space        = 10*1024;       /* 10K Kbyte == 10MB */
 495 BOOL    check_rfc2047_length   = TRUE;
 496 int     check_spool_inodes     = 100;
 497 int     check_spool_space      = 10*1024;       /* 10K Kbyte == 10MB */
 498
 499 uschar *chunking_advertise_hosts = US"*";
 500 unsigned chunking_datasize     = 0;
 501 unsigned chunking_data_left    = 0;
 502 BOOL    chunking_offered       = FALSE;
 503 chunking_state_t chunking_state= CHUNKING_NOT_OFFERED;
 504 const pcre *regex_CHUNKING     = NULL;
 505
 506 uschar *client_authenticator   = NULL;
 507 uschar *client_authenticated_id = NULL;
 508 uschar *client_authenticated_sender = NULL;
 509 int     clmacro_count          = 0;
 510 uschar *clmacros[MAX_CLMACROS];
 511 BOOL    config_changed         = FALSE;
 512 FILE   *config_file            = NULL;
 513 const uschar *config_filename  = NULL;
 514 int     config_lineno          = 0;
 515 #ifdef CONFIGURE_GROUP
 516 gid_t   config_gid             = CONFIGURE_GROUP;
 517 #else
 518 gid_t   config_gid             = 0;
 519 #endif
 520 uschar *config_main_filelist   = US CONFIGURE_FILE
 521                          "\0<-----------Space to patch configure_filename->";
 522 uschar *config_main_filename   = NULL;
 523 uschar *config_main_directory  = NULL;
 524
 525 #ifdef CONFIGURE_OWNER
 526 uid_t   config_uid             = CONFIGURE_OWNER;
 527 #else
 528 uid_t   config_uid             = 0;
 529 #endif
 530
 531 int     connection_max_messages= -1;
 532 uschar *continue_hostname      = NULL;
 533 uschar *continue_host_address  = NULL;
 534 BOOL    continue_more          = FALSE;
 535 int     continue_sequence      = 1;
 536 BOOL    continue_proxy         = FALSE;
 537 uschar *continue_transport     = NULL;
 538
 539 uschar *csa_status             = NULL;
 540 cut_t   cutthrough = {
 541   FALSE,                                /* delivery: when to attempt */
 542   FALSE,                                /* on defer: spool locally */
 543   -1,                                   /* fd: open connection */
 544   0,                                    /* nrcpt: number of addresses */
 545 };
 546
 547 BOOL    daemon_listen          = FALSE;
 548 uschar *daemon_smtp_port       = US"smtp";
 549 int     daemon_startup_retries = 9;
 550 int     daemon_startup_sleep   = 30;
 551
 552 #ifdef EXPERIMENTAL_DCC
 553 BOOL    dcc_direct_add_header  = FALSE;
 554 uschar *dcc_header             = NULL;
 555 uschar *dcc_result             = NULL;
 556 uschar *dccifd_address         = US"/usr/local/dcc/var/dccifd";
 557 uschar *dccifd_options         = US"header";
 558 #endif
 559
 560 BOOL    debug_daemon           = FALSE;
 561 int     debug_fd               = -1;
 562 FILE   *debug_file             = NULL;
 563 int     debug_notall[]         = {
 564   Di_memory,
 565   -1
 566 };
 567 bit_table debug_options[]      = { /* must be in alphabetical order */
 568   BIT_TABLE(D, acl),
 569   BIT_TABLE(D, all),
 570   BIT_TABLE(D, auth),
 571   BIT_TABLE(D, deliver),
 572   BIT_TABLE(D, dns),
 573   BIT_TABLE(D, dnsbl),
 574   BIT_TABLE(D, exec),
 575   BIT_TABLE(D, expand),
 576   BIT_TABLE(D, filter),
 577   BIT_TABLE(D, hints_lookup),
 578   BIT_TABLE(D, host_lookup),
 579   BIT_TABLE(D, ident),
 580   BIT_TABLE(D, interface),
 581   BIT_TABLE(D, lists),
 582   BIT_TABLE(D, load),
 583   BIT_TABLE(D, local_scan),
 584   BIT_TABLE(D, lookup),
 585   BIT_TABLE(D, memory),
 586   BIT_TABLE(D, pid),
 587   BIT_TABLE(D, process_info),
 588   BIT_TABLE(D, queue_run),
 589   BIT_TABLE(D, receive),
 590   BIT_TABLE(D, resolver),
 591   BIT_TABLE(D, retry),
 592   BIT_TABLE(D, rewrite),
 593   BIT_TABLE(D, route),
 594   BIT_TABLE(D, timestamp),
 595   BIT_TABLE(D, tls),
 596   BIT_TABLE(D, transport),
 597   BIT_TABLE(D, uid),
 598   BIT_TABLE(D, verify),
 599 };
 600 int     debug_options_count    = nelem(debug_options);
 601
 602 unsigned int debug_selector    = 0;
 603 BOOL    debug_store            = FALSE;
 604 int     delay_warning[DELAY_WARNING_SIZE] = { DELAY_WARNING_SIZE, 1, 24*60*60 };
 605 uschar *delay_warning_condition=
 606   US"${if or {"
 607             "{ !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} }"
 608             "{ match{$h_precedence:}{(?i)bulk|list|junk} }"
 609             "{ match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} }"
 610             "} {no}{yes}}";
 611 BOOL    delivery_date_remove   = TRUE;
 612 uschar *deliver_address_data   = NULL;
 613 int     deliver_datafile       = -1;
 614 const uschar *deliver_domain   = NULL;
 615 uschar *deliver_domain_data    = NULL;
 616 const uschar *deliver_domain_orig = NULL;
 617 const uschar *deliver_domain_parent = NULL;
 618 BOOL    deliver_drop_privilege = FALSE;
 619 BOOL    deliver_firsttime      = FALSE;
 620 BOOL    deliver_force          = FALSE;
 621 BOOL    deliver_freeze         = FALSE;
 622 time_t  deliver_frozen_at      = 0;
 623 uschar *deliver_home           = NULL;
 624 const uschar *deliver_host     = NULL;
 625 const uschar *deliver_host_address = NULL;
 626 int     deliver_host_port      = 0;
 627 uschar *deliver_in_buffer      = NULL;
 628 ino_t   deliver_inode          = 0;
 629 uschar *deliver_localpart      = NULL;
 630 uschar *deliver_localpart_data = NULL;
 631 uschar *deliver_localpart_orig = NULL;
 632 uschar *deliver_localpart_parent = NULL;
 633 uschar *deliver_localpart_prefix = NULL;
 634 uschar *deliver_localpart_suffix = NULL;
 635 BOOL    deliver_force_thaw     = FALSE;
 636 BOOL    deliver_manual_thaw    = FALSE;
 637 uschar *deliver_out_buffer     = NULL;
 638 int     deliver_queue_load_max = -1;
 639 address_item  *deliver_recipients = NULL;
 640 uschar *deliver_selectstring   = NULL;
 641 BOOL    deliver_selectstring_regex = FALSE;
 642 uschar *deliver_selectstring_sender = NULL;
 643 BOOL    deliver_selectstring_sender_regex = FALSE;
 644 BOOL    disable_callout_flush  = FALSE;
 645 BOOL    disable_delay_flush    = FALSE;
 646 #ifdef ENABLE_DISABLE_FSYNC
 647 BOOL    disable_fsync          = FALSE;
 648 #endif
 649 BOOL    disable_ipv6           = FALSE;
 650 BOOL    disable_logging        = FALSE;
 651
 652 #ifndef DISABLE_DKIM
 653 BOOL    dkim_collect_input       = FALSE;
 654 uschar *dkim_cur_signer          = NULL;
 655 BOOL    dkim_disable_verify      = FALSE;
 656 int     dkim_key_length          = 0;
 657 uschar *dkim_signers             = NULL;
 658 uschar *dkim_signing_domain      = NULL;
 659 uschar *dkim_signing_selector    = NULL;
 660 uschar *dkim_verify_signers      = US"$dkim_signers";
 661 #endif
 662 #ifdef EXPERIMENTAL_DMARC
 663 BOOL    dmarc_has_been_checked  = FALSE;
 664 uschar *dmarc_ar_header         = NULL;
 665 uschar *dmarc_domain_policy     = NULL;
 666 uschar *dmarc_forensic_sender   = NULL;
 667 uschar *dmarc_history_file      = NULL;
 668 uschar *dmarc_status            = NULL;
 669 uschar *dmarc_status_text       = NULL;
 670 uschar *dmarc_tld_file          = NULL;
 671 uschar *dmarc_used_domain       = NULL;
 672 BOOL    dmarc_disable_verify    = FALSE;
 673 BOOL    dmarc_enable_forensic   = FALSE;
 674 #endif
 675
 676 uschar *dns_again_means_nonexist = NULL;
 677 int     dns_csa_search_limit   = 5;
 678 BOOL    dns_csa_use_reverse    = TRUE;
 679 #ifdef EXPERIMENTAL_DANE
 680 int     dns_dane_ok            = -1;
 681 #endif
 682 uschar *dns_ipv4_lookup        = NULL;
 683 int     dns_retrans            = 0;
 684 int     dns_retry              = 0;
 685 int     dns_dnssec_ok          = -1; /* <0 = not coerced */
 686 uschar *dns_trust_aa           = NULL;
 687 int     dns_use_edns0          = -1; /* <0 = not coerced */
 688 uschar *dnslist_domain         = NULL;
 689 uschar *dnslist_matched        = NULL;
 690 uschar *dnslist_text           = NULL;
 691 uschar *dnslist_value          = NULL;
 692 tree_node *domainlist_anchor   = NULL;
 693 int     domainlist_count       = 0;
 694 BOOL    dont_deliver           = FALSE;
 695 BOOL    dot_ends               = TRUE;
 696 BOOL    drop_cr                = FALSE;         /* No longer used */
 697 uschar *dsn_from               = US DEFAULT_DSN_FROM;
 698
 699 BOOL    enable_dollar_recipients = FALSE;
 700 BOOL    envelope_to_remove     = TRUE;
 701 int     errno_quota            = ERRNO_QUOTA;
 702 uschar *errors_copy            = NULL;
 703 int     error_handling         = ERRORS_SENDER;
 704 uschar *errors_reply_to        = NULL;
 705 int     errors_sender_rc       = EXIT_FAILURE;
 706 #ifndef DISABLE_EVENT
 707 uschar *event_action             = NULL;        /* expansion for delivery events */
 708 uschar *event_data               = NULL;        /* auxiliary data variable for event */
 709 int     event_defer_errno        = 0;
 710 const uschar *event_name         = NULL;        /* event name variable */
 711 #endif
 712
 713
 714 gid_t   exim_gid               = EXIM_GID;
 715 BOOL    exim_gid_set           = TRUE;          /* This gid is always set */
 716 uschar *exim_path              = US BIN_DIRECTORY "/exim"
 717                         "\0<---------------Space to patch exim_path->";
 718 uid_t   exim_uid               = EXIM_UID;
 719 BOOL    exim_uid_set           = TRUE;          /* This uid is always set */
 720 int     expand_level           = 0;             /* Nesting depth, indent for debug */
 721 int     expand_forbid          = 0;
 722 int     expand_nlength[EXPAND_MAXN+1];
 723 int     expand_nmax            = -1;
 724 uschar *expand_nstring[EXPAND_MAXN+1];
 725 BOOL    expand_string_forcedfail = FALSE;
 726 uschar *expand_string_message;
 727 BOOL    extract_addresses_remove_arguments = TRUE;
 728 uschar *extra_local_interfaces = NULL;
 729
 730 int     fake_response          = OK;
 731 uschar *fake_response_text     = US"Your message has been rejected but is "
 732                                    "being kept for evaluation.\nIf it was a "
 733                                    "legitimate message, it may still be "
 734                                    "delivered to the target recipient(s).";
 735 int     filter_n[FILTER_VARIABLE_COUNT];
 736 BOOL    filter_running         = FALSE;
 737 int     filter_sn[FILTER_VARIABLE_COUNT];
 738 int     filter_test            = FTEST_NONE;
 739 uschar *filter_test_sfile      = NULL;
 740 uschar *filter_test_ufile      = NULL;
 741 uschar *filter_thisaddress     = NULL;
 742 int     finduser_retries       = 0;
 743 uid_t   fixed_never_users[]    = { FIXED_NEVER_USERS };
 744 uschar *freeze_tell            = NULL;
 745 uschar *freeze_tell_config     = NULL;
 746 uschar *fudged_queue_times     = US"";
 747
 748 uschar *gecos_name             = NULL;
 749 uschar *gecos_pattern          = NULL;
 750 rewrite_rule  *global_rewrite_rules = NULL;
 751
 752 uschar *headers_charset        = US HEADERS_CHARSET;
 753 int     header_insert_maxlen   = 64 * 1024;
 754 header_line  *header_last      = NULL;
 755 header_line  *header_list      = NULL;
 756 int     header_maxsize         = HEADER_MAXSIZE;
 757 int     header_line_maxsize    = 0;
 758
 759 header_name header_names[] = {
 760   { US"bcc",            3, TRUE,  htype_bcc },
 761   { US"cc",             2, TRUE,  htype_cc },
 762   { US"date",           4, TRUE,  htype_date },
 763   { US"delivery-date", 13, FALSE, htype_delivery_date },
 764   { US"envelope-to",   11, FALSE, htype_envelope_to },
 765   { US"from",           4, TRUE,  htype_from },
 766   { US"message-id",    10, TRUE,  htype_id },
 767   { US"received",       8, FALSE, htype_received },
 768   { US"reply-to",       8, FALSE, htype_reply_to },
 769   { US"return-path",   11, FALSE, htype_return_path },
 770   { US"sender",         6, TRUE,  htype_sender },
 771   { US"subject",        7, FALSE, htype_subject },
 772   { US"to",             2, TRUE,  htype_to }
 773 };
 774
 775 int header_names_size          = sizeof(header_names)/sizeof(header_name);
 776
 777 BOOL    header_rewritten       = FALSE;
 778 uschar *helo_accept_junk_hosts = NULL;
 779 uschar *helo_allow_chars       = US"";
 780 uschar *helo_lookup_domains    = US"@ : @[]";
 781 uschar *helo_try_verify_hosts  = NULL;
 782 BOOL    helo_verified          = FALSE;
 783 BOOL    helo_verify_failed     = FALSE;
 784 uschar *helo_verify_hosts      = NULL;
 785 const uschar *hex_digits       = CUS"0123456789abcdef";
 786 uschar *hold_domains           = NULL;
 787 BOOL    host_checking          = FALSE;
 788 BOOL    host_checking_callout  = FALSE;
 789 uschar *host_data              = NULL;
 790 BOOL    host_find_failed_syntax= FALSE;
 791 uschar *host_lookup            = NULL;
 792 BOOL    host_lookup_deferred   = FALSE;
 793 BOOL    host_lookup_failed     = FALSE;
 794 uschar *host_lookup_order      = US"bydns:byaddr";
 795 uschar *host_lookup_msg        = US"";
 796 int     host_number            = 0;
 797 uschar *host_number_string     = NULL;
 798 uschar *host_reject_connection = NULL;
 799 tree_node *hostlist_anchor     = NULL;
 800 int     hostlist_count         = 0;
 801 uschar *hosts_treat_as_local   = NULL;
 802 uschar *hosts_connection_nolog = NULL;
 803
 804 int     ignore_bounce_errors_after = 10*7*24*60*60;  /* 10 weeks */
 805 BOOL    ignore_fromline_local  = FALSE;
 806 uschar *ignore_fromline_hosts  = NULL;
 807 BOOL    inetd_wait_mode        = FALSE;
 808 int     inetd_wait_timeout     = -1;
 809 uschar *initial_cwd            = NULL;
 810 uschar *interface_address      = NULL;
 811 int     interface_port         = -1;
 812 BOOL    is_inetd               = FALSE;
 813 uschar *iterate_item           = NULL;
 814
 815 int     journal_fd             = -1;
 816
 817 uschar *keep_environment       = NULL;
 818
 819 int     keep_malformed         = 4*24*60*60;    /* 4 days */
 820
 821 uschar *eldap_dn               = NULL;
 822 int     load_average           = -2;
 823 BOOL    local_error_message    = FALSE;
 824 BOOL    local_from_check       = TRUE;
 825 uschar *local_from_prefix      = NULL;
 826 uschar *local_from_suffix      = NULL;
 827
 828 #if HAVE_IPV6
 829 uschar *local_interfaces       = US"<; ::0 ; 0.0.0.0";
 830 #else
 831 uschar *local_interfaces       = US"0.0.0.0";
 832 #endif
 833
 834 uschar *local_scan_data        = NULL;
 835 int     local_scan_timeout     = 5*60;
 836 BOOL    local_sender_retain    = FALSE;
 837 gid_t   local_user_gid         = (gid_t)(-1);
 838 uid_t   local_user_uid         = (uid_t)(-1);
 839
 840 tree_node *localpartlist_anchor= NULL;
 841 int     localpartlist_count    = 0;
 842 uschar *log_buffer             = NULL;
 843
 844 int     log_default[]          = { /* for initializing log_selector */
 845   Li_acl_warn_skipped,
 846   Li_connection_reject,
 847   Li_delay_delivery,
 848   Li_dnslist_defer,
 849   Li_etrn,
 850   Li_host_lookup_failed,
 851   Li_lost_incoming_connection,
 852   Li_outgoing_interface, /* see d_log_interface in deliver.c */
 853   Li_queue_run,
 854   Li_rejected_header,
 855   Li_retry_defer,
 856   Li_sender_verify_fail,
 857   Li_size_reject,
 858   Li_skip_delivery,
 859   Li_smtp_confirmation,
 860   Li_tls_certificate_verified,
 861   Li_tls_cipher,
 862   -1
 863 };
 864
 865 uschar *log_file_path          = US LOG_FILE_PATH
 866                            "\0<--------------Space to patch log_file_path->";
 867
 868 int     log_notall[]           = {
 869   -1
 870 };
 871 bit_table log_options[]        = { /* must be in alphabetical order */
 872   BIT_TABLE(L, 8bitmime),
 873   BIT_TABLE(L, acl_warn_skipped),
 874   BIT_TABLE(L, address_rewrite),
 875   BIT_TABLE(L, all),
 876   BIT_TABLE(L, all_parents),
 877   BIT_TABLE(L, arguments),
 878   BIT_TABLE(L, connection_reject),
 879   BIT_TABLE(L, delay_delivery),
 880   BIT_TABLE(L, deliver_time),
 881   BIT_TABLE(L, delivery_size),
 882   BIT_TABLE(L, dnslist_defer),
 883   BIT_TABLE(L, dnssec),
 884   BIT_TABLE(L, etrn),
 885   BIT_TABLE(L, host_lookup_failed),
 886   BIT_TABLE(L, ident_timeout),
 887   BIT_TABLE(L, incoming_interface),
 888   BIT_TABLE(L, incoming_port),
 889   BIT_TABLE(L, lost_incoming_connection),
 890   BIT_TABLE(L, outgoing_interface),
 891   BIT_TABLE(L, outgoing_port),
 892   BIT_TABLE(L, pid),
 893 #if defined(SUPPORT_PROXY) || defined (SUPPORT_SOCKS)
 894   BIT_TABLE(L, proxy),
 895 #endif
 896   BIT_TABLE(L, queue_run),
 897   BIT_TABLE(L, queue_time),
 898   BIT_TABLE(L, queue_time_overall),
 899   BIT_TABLE(L, received_recipients),
 900   BIT_TABLE(L, received_sender),
 901   BIT_TABLE(L, rejected_header),
 902   { US"rejected_headers", Li_rejected_header },
 903   BIT_TABLE(L, retry_defer),
 904   BIT_TABLE(L, return_path_on_delivery),
 905   BIT_TABLE(L, sender_on_delivery),
 906   BIT_TABLE(L, sender_verify_fail),
 907   BIT_TABLE(L, size_reject),
 908   BIT_TABLE(L, skip_delivery),
 909   BIT_TABLE(L, smtp_confirmation),
 910   BIT_TABLE(L, smtp_connection),
 911   BIT_TABLE(L, smtp_incomplete_transaction),
 912   BIT_TABLE(L, smtp_mailauth),
 913   BIT_TABLE(L, smtp_no_mail),
 914   BIT_TABLE(L, smtp_protocol_error),
 915   BIT_TABLE(L, smtp_syntax_error),
 916   BIT_TABLE(L, subject),
 917   BIT_TABLE(L, tls_certificate_verified),
 918   BIT_TABLE(L, tls_cipher),
 919   BIT_TABLE(L, tls_peerdn),
 920   BIT_TABLE(L, tls_sni),
 921   BIT_TABLE(L, unknown_in_list),
 922 };
 923 int     log_options_count      = nelem(log_options);
 924
 925 int     log_reject_target      = 0;
 926 unsigned int log_selector[log_selector_size]; /* initialized in main() */
 927 uschar *log_selector_string    = NULL;
 928 FILE   *log_stderr             = NULL;
 929 BOOL    log_testing_mode       = FALSE;
 930 BOOL    log_timezone           = FALSE;
 931 uschar *login_sender_address   = NULL;
 932 uschar *lookup_dnssec_authenticated = NULL;
 933 int     lookup_open_max        = 25;
 934 uschar *lookup_value           = NULL;
 935
 936 macro_item  *macros            = NULL;
 937 macro_item  *mlast             = NULL;
 938 BOOL    macros_builtin_created = FALSE;
 939 uschar *mailstore_basename     = NULL;
 940 #ifdef WITH_CONTENT_SCAN
 941 uschar *malware_name           = NULL;  /* Virus Name */
 942 #endif
 943 int     max_received_linelength= 0;
 944 int     max_username_length    = 0;
 945 int     message_age            = 0;
 946 uschar *message_body           = NULL;
 947 uschar *message_body_end       = NULL;
 948 BOOL    message_body_newlines  = FALSE;
 949 int     message_body_size      = 0;
 950 int     message_body_visible   = 500;
 951 int     message_ended          = END_NOTSTARTED;
 952 uschar *message_headers        = NULL;
 953 uschar *message_id;
 954 uschar *message_id_domain      = NULL;
 955 uschar *message_id_text        = NULL;
 956 struct timeval message_id_tv   = { 0, 0 };
 957 uschar  message_id_option[MESSAGE_ID_LENGTH + 3];
 958 uschar *message_id_external;
 959 int     message_linecount      = 0;
 960 BOOL    message_logs           = TRUE;
 961 int     message_size           = 0;
 962 uschar *message_size_limit     = US"50M";
 963 #ifdef SUPPORT_I18N
 964 BOOL    message_smtputf8       = FALSE;
 965 int     message_utf8_downconvert = 0;   /* -1 ifneeded; 0 never; 1 always */
 966 #endif
 967 uschar  message_subdir[2]      = { 0, 0 };
 968 uschar *message_reference      = NULL;
 969
 970 /* MIME ACL expandables */
 971 #ifdef WITH_CONTENT_SCAN
 972 int     mime_anomaly_level     = 0;
 973 const uschar *mime_anomaly_text      = NULL;
 974 uschar *mime_boundary          = NULL;
 975 uschar *mime_charset           = NULL;
 976 uschar *mime_content_description = NULL;
 977 uschar *mime_content_disposition = NULL;
 978 uschar *mime_content_id        = NULL;
 979 unsigned int mime_content_size = 0;
 980 uschar *mime_content_transfer_encoding = NULL;
 981 uschar *mime_content_type      = NULL;
 982 uschar *mime_decoded_filename  = NULL;
 983 uschar *mime_filename          = NULL;
 984 int     mime_is_multipart      = 0;
 985 int     mime_is_coverletter    = 0;
 986 int     mime_is_rfc822         = 0;
 987 int     mime_part_count        = -1;
 988 #endif
 989
 990 BOOL    mua_wrapper            = FALSE;
 991
 992 uid_t  *never_users            = NULL;
 993 #ifdef WITH_CONTENT_SCAN
 994 BOOL    no_mbox_unspool        = FALSE;
 995 #endif
 996 BOOL    no_multiline_responses = FALSE;
 997
 998 const int on                   = 1;     /* for setsockopt */
 999 const int off                  = 0;
1000
1001 uid_t   original_euid;
1002 gid_t   originator_gid;
1003 uschar *originator_login       = NULL;
1004 uschar *originator_name        = NULL;
1005 uid_t   originator_uid;
1006 uschar *override_local_interfaces = NULL;
1007 uschar *override_pid_file_path = NULL;
1008
1009 BOOL    parse_allow_group      = FALSE;
1010 BOOL    parse_found_group      = FALSE;
1011 uschar *percent_hack_domains   = NULL;
1012 uschar *pid_file_path          = US PID_FILE_PATH
1013                            "\0<--------------Space to patch pid_file_path->";
1014 BOOL    pipelining_enable      = TRUE;
1015 uschar *pipelining_advertise_hosts = US"*";
1016 BOOL    preserve_message_logs  = FALSE;
1017 uschar *primary_hostname       = NULL;
1018 BOOL    print_topbitchars      = FALSE;
1019 uschar  process_info[PROCESS_INFO_SIZE];
1020 int     process_info_len       = 0;
1021 uschar *process_log_path       = NULL;
1022 BOOL    prod_requires_admin    = TRUE;
1023
1024 #if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
1025 uschar *hosts_proxy            = US"";
1026 uschar *proxy_external_address = US"";
1027 int     proxy_external_port    = 0;
1028 uschar *proxy_local_address    = US"";
1029 int     proxy_local_port       = 0;
1030 BOOL    proxy_session          = FALSE;
1031 BOOL    proxy_session_failed   = FALSE;
1032 #endif
1033
1034 uschar *prvscheck_address      = NULL;
1035 uschar *prvscheck_keynum       = NULL;
1036 uschar *prvscheck_result       = NULL;
1037
1038
1039 const uschar *qualify_domain_recipient = NULL;
1040 uschar *qualify_domain_sender  = NULL;
1041 BOOL    queue_2stage           = FALSE;
1042 uschar *queue_domains          = NULL;
1043 int     queue_interval         = -1;
1044 BOOL    queue_list_requires_admin = TRUE;
1045 uschar *queue_name             = US"";
1046 BOOL    queue_only             = FALSE;
1047 uschar *queue_only_file        = NULL;
1048 int     queue_only_load        = -1;
1049 BOOL    queue_only_load_latch  = TRUE;
1050 BOOL    queue_only_override    = TRUE;
1051 BOOL    queue_only_policy      = FALSE;
1052 BOOL    queue_run_first_delivery = FALSE;
1053 BOOL    queue_run_force        = FALSE;
1054 BOOL    queue_run_in_order     = FALSE;
1055 BOOL    queue_run_local        = FALSE;
1056 uschar *queue_run_max          = US"5";
1057 pid_t   queue_run_pid          = (pid_t)0;
1058 int     queue_run_pipe         = -1;
1059 BOOL    queue_running          = FALSE;
1060 BOOL    queue_smtp             = FALSE;
1061 uschar *queue_smtp_domains     = NULL;
1062
1063 unsigned int random_seed       = 0;
1064 tree_node *ratelimiters_cmd    = NULL;
1065 tree_node *ratelimiters_conn   = NULL;
1066 tree_node *ratelimiters_mail   = NULL;
1067 uschar *raw_active_hostname    = NULL;
1068 uschar *raw_sender             = NULL;
1069 uschar **raw_recipients        = NULL;
1070 int     raw_recipients_count   = 0;
1071
1072 int     rcpt_count             = 0;
1073 int     rcpt_fail_count        = 0;
1074 int     rcpt_defer_count       = 0;
1075 gid_t   real_gid;
1076 uid_t   real_uid;
1077 BOOL    really_exim            = TRUE;
1078 BOOL    receive_call_bombout   = FALSE;
1079 int     receive_linecount      = 0;
1080 int     receive_messagecount   = 0;
1081 int     receive_timeout        = 0;
1082 int     received_count         = 0;
1083 uschar *received_for           = NULL;
1084
1085 /*  This is the default text for Received headers generated by Exim. The
1086 date  will be automatically added on the end. */
1087
1088 uschar *received_header_text   = US
1089      "Received: "
1090      "${if def:sender_rcvhost {from $sender_rcvhost\n\t}"
1091      "{${if def:sender_ident {from ${quote_local_part:$sender_ident} }}"
1092      "${if def:sender_helo_name {(helo=$sender_helo_name)\n\t}}}}"
1093      "by $primary_hostname "
1094      "${if def:received_protocol {with $received_protocol}} "
1095      #ifdef SUPPORT_TLS
1096      "${if def:tls_cipher {($tls_cipher)\n\t}}"
1097      #endif
1098      "(Exim $version_number)\n\t"
1099      "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1100      "id $message_exim_id"
1101      "${if def:received_for {\n\tfor $received_for}}"
1102      "\0<---------------Space to patch received_header_text->";
1103
1104 int     received_headers_max   = 30;
1105 uschar *received_protocol      = NULL;
1106 int     received_time          = 0;
1107 uschar *recipient_data         = NULL;
1108 uschar *recipient_unqualified_hosts = NULL;
1109 uschar *recipient_verify_failure = NULL;
1110 int     recipients_count       = 0;
1111 BOOL    recipients_discarded   = FALSE;
1112 recipient_item  *recipients_list = NULL;
1113 int     recipients_list_max    = 0;
1114 int     recipients_max         = 0;
1115 BOOL    recipients_max_reject  = FALSE;
1116 const pcre *regex_AUTH         = NULL;
1117 const pcre *regex_check_dns_names = NULL;
1118 const pcre *regex_From         = NULL;
1119 const pcre *regex_IGNOREQUOTA  = NULL;
1120 const pcre *regex_PIPELINING   = NULL;
1121 const pcre *regex_SIZE         = NULL;
1122 const pcre *regex_ismsgid      = NULL;
1123 const pcre *regex_smtp_code    = NULL;
1124 uschar *regex_vars[REGEX_VARS];
1125 #ifdef WHITELIST_D_MACROS
1126 const pcre *regex_whitelisted_macro = NULL;
1127 #endif
1128 #ifdef WITH_CONTENT_SCAN
1129 uschar *regex_match_string     = NULL;
1130 #endif
1131 int     remote_delivery_count  = 0;
1132 int     remote_max_parallel    = 2;
1133 uschar *remote_sort_domains    = NULL;
1134 int     retry_data_expire      = 7*24*60*60;
1135 int     retry_interval_max     = 24*60*60;
1136 int     retry_maximum_timeout  = 0;        /* set from retry config */
1137 retry_config  *retries         = NULL;
1138 uschar *return_path            = NULL;
1139 BOOL    return_path_remove     = TRUE;
1140 int     rewrite_existflags     = 0;
1141 uschar *rfc1413_hosts          = US"@[]";
1142 int     rfc1413_query_timeout  = 0;
1143 /* BOOL    rfc821_domains         = FALSE;  <<< on the way out */
1144 uid_t   root_gid               = ROOT_GID;
1145 uid_t   root_uid               = ROOT_UID;
1146
1147 router_instance  *routers  = NULL;
1148 router_instance  router_defaults = {
1149     NULL,                      /* chain pointer */
1150     NULL,                      /* name */
1151     NULL,                      /* info */
1152     NULL,                      /* private options block pointer */
1153     NULL,                      /* driver name */
1154
1155     NULL,                      /* address_data */
1156 #ifdef EXPERIMENTAL_BRIGHTMAIL
1157     NULL,                      /* bmi_rule */
1158 #endif
1159     NULL,                      /* cannot_route_message */
1160     NULL,                      /* condition */
1161     NULL,                      /* current_directory */
1162     NULL,                      /* debug_string */
1163     NULL,                      /* domains */
1164     NULL,                      /* errors_to */
1165     NULL,                      /* expand_gid */
1166     NULL,                      /* expand_uid */
1167     NULL,                      /* expand_more */
1168     NULL,                      /* expand_unseen */
1169     NULL,                      /* extra_headers */
1170     NULL,                      /* fallback_hosts */
1171     NULL,                      /* home_directory */
1172     NULL,                      /* ignore_target_hosts */
1173     NULL,                      /* local_parts */
1174     NULL,                      /* pass_router_name */
1175     NULL,                      /* prefix */
1176     NULL,                      /* redirect_router_name */
1177     NULL,                      /* remove_headers */
1178     NULL,                      /* require_files */
1179     NULL,                      /* router_home_directory */
1180     US"freeze",                /* self */
1181     NULL,                      /* senders */
1182     NULL,                      /* suffix */
1183     NULL,                      /* translate_ip_address */
1184     NULL,                      /* transport_name */
1185
1186     TRUE,                      /* address_test */
1187 #ifdef EXPERIMENTAL_BRIGHTMAIL
1188     FALSE,                     /* bmi_deliver_alternate */
1189     FALSE,                     /* bmi_deliver_default */
1190     FALSE,                     /* bmi_dont_deliver */
1191 #endif
1192     TRUE,                      /* expn */
1193     FALSE,                     /* caseful_local_part */
1194     FALSE,                     /* check_local_user */
1195     FALSE,                     /* disable_logging */
1196     FALSE,                     /* fail_verify_recipient */
1197     FALSE,                     /* fail_verify_sender */
1198     FALSE,                     /* gid_set */
1199     FALSE,                     /* initgroups */
1200     TRUE_UNSET,                /* log_as_local */
1201     TRUE,                      /* more */
1202     FALSE,                     /* pass_on_timeout */
1203     FALSE,                     /* prefix_optional */
1204     TRUE,                      /* repeat_use */
1205     TRUE_UNSET,                /* retry_use_local_part - fudge "unset" */
1206     FALSE,                     /* same_domain_copy_routing */
1207     FALSE,                     /* self_rewrite */
1208     FALSE,                     /* suffix_optional */
1209     FALSE,                     /* verify_only */
1210     TRUE,                      /* verify_recipient */
1211     TRUE,                      /* verify_sender */
1212     FALSE,                     /* uid_set */
1213     FALSE,                     /* unseen */
1214     FALSE,                     /* dsn_lasthop */
1215
1216     self_freeze,               /* self_code */
1217     (uid_t)(-1),               /* uid */
1218     (gid_t)(-1),               /* gid */
1219
1220     NULL,                      /* fallback_hostlist */
1221     NULL,                      /* transport instance */
1222     NULL,                      /* pass_router */
1223     NULL,                      /* redirect_router */
1224
1225     { NULL, NULL },            /* dnssec_domains {require,request} */
1226 };
1227
1228 uschar *router_name            = NULL;
1229
1230 ip_address_item *running_interfaces = NULL;
1231 BOOL    running_in_test_harness = FALSE;
1232
1233 /* This is a weird one. The following string gets patched in the binary by the
1234 script that sets up a copy of Exim for running in the test harness. It seems
1235 that compilers are now clever, and share constant strings if they can.
1236 Elsewhere in Exim the string "<" is used. The compiler optimization seems to
1237 make use of the end of this string in order to save space. So the patching then
1238 wrecks this. We defeat this optimization by adding some additional characters
1239 onto the end of the string. */
1240
1241 uschar *running_status         = US">>>running<<<" "\0EXTRA";
1242
1243 int     runrc                  = 0;
1244
1245 uschar *search_error_message   = NULL;
1246 BOOL    search_find_defer      = FALSE;
1247 uschar *self_hostname          = NULL;
1248 uschar *sender_address         = NULL;
1249 unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32];
1250 uschar *sender_address_data    = NULL;
1251 BOOL    sender_address_forced  = FALSE;
1252 uschar *sender_address_unrewritten = NULL;
1253 uschar *sender_data            = NULL;
1254 unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32];
1255 uschar *sender_fullhost        = NULL;
1256 BOOL    sender_helo_dnssec     = FALSE;
1257 uschar *sender_helo_name       = NULL;
1258 uschar **sender_host_aliases   = &no_aliases;
1259 uschar *sender_host_address    = NULL;
1260 uschar *sender_host_authenticated = NULL;
1261 unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32];
1262 BOOL    sender_host_dnssec     = FALSE;
1263 uschar *sender_host_name       = NULL;
1264 int     sender_host_port       = 0;
1265 BOOL    sender_host_notsocket  = FALSE;
1266 BOOL    sender_host_unknown    = FALSE;
1267 uschar *sender_ident           = NULL;
1268 BOOL    sender_local           = FALSE;
1269 BOOL    sender_name_forced     = FALSE;
1270 uschar *sender_rate            = NULL;
1271 uschar *sender_rate_limit      = NULL;
1272 uschar *sender_rate_period     = NULL;
1273 uschar *sender_rcvhost         = NULL;
1274 BOOL    sender_set_untrusted   = FALSE;
1275 uschar *sender_unqualified_hosts = NULL;
1276 uschar *sender_verify_failure = NULL;
1277 address_item *sender_verified_list  = NULL;
1278 address_item *sender_verified_failed = NULL;
1279 int     sender_verified_rc     = -1;
1280 BOOL    sender_verified_responded = FALSE;
1281 uschar *sending_ip_address     = NULL;
1282 int     sending_port           = -1;
1283 SIGNAL_BOOL sigalrm_seen       = FALSE;
1284 uschar **sighup_argv           = NULL;
1285 int     slow_lookup_log        = 0;     /* millisecs, zero disables */
1286 int     smtp_accept_count      = 0;
1287 BOOL    smtp_accept_keepalive  = TRUE;
1288 int     smtp_accept_max        = 20;
1289 int     smtp_accept_max_nonmail= 10;
1290 uschar *smtp_accept_max_nonmail_hosts = US"*";
1291 int     smtp_accept_max_per_connection = 1000;
1292 uschar *smtp_accept_max_per_host = NULL;
1293 int     smtp_accept_queue      = 0;
1294 int     smtp_accept_queue_per_connection = 10;
1295 int     smtp_accept_reserve    = 0;
1296 uschar *smtp_active_hostname   = NULL;
1297 BOOL    smtp_authenticated     = FALSE;
1298 uschar *smtp_banner            = US"$smtp_active_hostname ESMTP "
1299                              "Exim $version_number $tod_full"
1300                              "\0<---------------Space to patch smtp_banner->";
1301 BOOL    smtp_batched_input     = FALSE;
1302 BOOL    smtp_check_spool_space = TRUE;
1303 int     smtp_ch_index          = 0;
1304 uschar *smtp_cmd_argument      = NULL;
1305 uschar *smtp_cmd_buffer        = NULL;
1306 time_t  smtp_connection_start  = 0;
1307 uschar  smtp_connection_had[SMTP_HBUFF_SIZE];
1308 int     smtp_connect_backlog   = 20;
1309 double  smtp_delay_mail        = 0.0;
1310 double  smtp_delay_rcpt        = 0.0;
1311 BOOL    smtp_enforce_sync      = TRUE;
1312 FILE   *smtp_in                = NULL;
1313 BOOL    smtp_input             = FALSE;
1314 int     smtp_load_reserve      = -1;
1315 int     smtp_mailcmd_count     = 0;
1316 FILE   *smtp_out               = NULL;
1317 uschar *smtp_etrn_command      = NULL;
1318 BOOL    smtp_etrn_serialize    = TRUE;
1319 int     smtp_max_synprot_errors= 3;
1320 int     smtp_max_unknown_commands = 3;
1321 uschar *smtp_notquit_reason    = NULL;
1322 uschar *smtp_ratelimit_hosts   = NULL;
1323 uschar *smtp_ratelimit_mail    = NULL;
1324 uschar *smtp_ratelimit_rcpt    = NULL;
1325 uschar *smtp_read_error        = US"";
1326 int     smtp_receive_timeout   = 5*60;
1327 uschar *smtp_receive_timeout_s = NULL;
1328 uschar *smtp_reserve_hosts     = NULL;
1329 BOOL    smtp_return_error_details = FALSE;
1330 int     smtp_rlm_base          = 0;
1331 double  smtp_rlm_factor        = 0.0;
1332 int     smtp_rlm_limit         = 0;
1333 int     smtp_rlm_threshold     = INT_MAX;
1334 int     smtp_rlr_base          = 0;
1335 double  smtp_rlr_factor        = 0.0;
1336 int     smtp_rlr_limit         = 0;
1337 int     smtp_rlr_threshold     = INT_MAX;
1338 unsigned smtp_peer_options     = 0;
1339 unsigned smtp_peer_options_wrap= 0;
1340 #ifdef SUPPORT_I18N
1341 uschar *smtputf8_advertise_hosts = US"*";       /* overridden under test-harness */
1342 #endif
1343
1344 #ifdef WITH_CONTENT_SCAN
1345 uschar *spamd_address          = US"127.0.0.1 783";
1346 uschar *spam_bar               = NULL;
1347 uschar *spam_report            = NULL;
1348 uschar *spam_action            = NULL;
1349 uschar *spam_score             = NULL;
1350 uschar *spam_score_int         = NULL;
1351 #endif
1352 #ifdef EXPERIMENTAL_SPF
1353 uschar *spf_guess              = US"v=spf1 a/24 mx/24 ptr ?all";
1354 uschar *spf_header_comment     = NULL;
1355 uschar *spf_received           = NULL;
1356 uschar *spf_result             = NULL;
1357 uschar *spf_smtp_comment       = NULL;
1358 #endif
1359
1360 BOOL    split_spool_directory  = FALSE;
1361 uschar *spool_directory        = US SPOOL_DIRECTORY
1362                            "\0<--------------Space to patch spool_directory->";
1363 #ifdef EXPERIMENTAL_SRS
1364 uschar *srs_config             = NULL;
1365 uschar *srs_db_address         = NULL;
1366 uschar *srs_db_key             = NULL;
1367 int     srs_hashlength         = 6;
1368 int     srs_hashmin            = -1;
1369 int     srs_maxage             = 31;
1370 uschar *srs_orig_recipient     = NULL;
1371 uschar *srs_orig_sender        = NULL;
1372 uschar *srs_recipient          = NULL;
1373 uschar *srs_secrets            = NULL;
1374 uschar *srs_status             = NULL;
1375 BOOL    srs_usehash            = TRUE;
1376 BOOL    srs_usetimestamp       = TRUE;
1377 #endif
1378 BOOL    strict_acl_vars        = FALSE;
1379 int     string_datestamp_offset= -1;
1380 int     string_datestamp_length= 0;
1381 int     string_datestamp_type  = -1;
1382 BOOL    strip_excess_angle_brackets = FALSE;
1383 BOOL    strip_trailing_dot     = FALSE;
1384 uschar *submission_domain      = NULL;
1385 BOOL    submission_mode        = FALSE;
1386 uschar *submission_name        = NULL;
1387 BOOL    suppress_local_fixups  = FALSE;
1388 BOOL    suppress_local_fixups_default = FALSE;
1389 BOOL    synchronous_delivery   = FALSE;
1390 BOOL    syslog_duplication     = TRUE;
1391 int     syslog_facility        = LOG_MAIL;
1392 BOOL    syslog_pid             = TRUE;
1393 uschar *syslog_processname     = US"exim";
1394 BOOL    syslog_timestamp       = TRUE;
1395 uschar *system_filter          = NULL;
1396
1397 uschar *system_filter_directory_transport = NULL;
1398 uschar *system_filter_file_transport = NULL;
1399 uschar *system_filter_pipe_transport = NULL;
1400 uschar *system_filter_reply_transport = NULL;
1401
1402 gid_t   system_filter_gid      = 0;
1403 BOOL    system_filter_gid_set  = FALSE;
1404 uid_t   system_filter_uid      = (uid_t)-1;
1405 BOOL    system_filter_uid_set  = FALSE;
1406 BOOL    system_filtering       = FALSE;
1407
1408 BOOL    tcp_fastopen_ok        = FALSE;
1409 BOOL    tcp_nodelay            = TRUE;
1410 #ifdef USE_TCP_WRAPPERS
1411 uschar *tcp_wrappers_daemon_name = US TCP_WRAPPERS_DAEMON_NAME;
1412 #endif
1413 int     test_harness_load_avg  = 0;
1414 int     thismessage_size_limit = 0;
1415 int     timeout_frozen_after   = 0;
1416 BOOL    timestamps_utc         = FALSE;
1417
1418 transport_instance  *transports = NULL;
1419
1420 transport_instance  transport_defaults = {
1421     NULL,                     /* chain pointer */
1422     NULL,                     /* name */
1423     NULL,                     /* info */
1424     NULL,                     /* private options block pointer */
1425     NULL,                     /* driver name */
1426     NULL,                     /* setup entry point */
1427     1,                        /* batch_max */
1428     NULL,                     /* batch_id */
1429     NULL,                     /* home_dir */
1430     NULL,                     /* current_dir */
1431     NULL,                     /* expand-multi-domain */
1432     TRUE,                     /* multi-domain */
1433     FALSE,                    /* overrides_hosts */
1434     100,                      /* max_addresses */
1435     500,                      /* connection_max_messages */
1436     FALSE,                    /* deliver_as_creator */
1437     FALSE,                    /* disable_logging */
1438     FALSE,                    /* initgroups */
1439     FALSE,                    /* uid_set */
1440     FALSE,                    /* gid_set */
1441     (uid_t)(-1),              /* uid */
1442     (gid_t)(-1),              /* gid */
1443     NULL,                     /* expand_uid */
1444     NULL,                     /* expand_gid */
1445     NULL,                     /* warn_message */
1446     NULL,                     /* shadow */
1447     NULL,                     /* shadow_condition */
1448     NULL,                     /* filter_command */
1449     NULL,                     /* add_headers */
1450     NULL,                     /* remove_headers */
1451     NULL,                     /* return_path */
1452     NULL,                     /* debug_string */
1453     NULL,                     /* max_parallel */
1454     NULL,                     /* message_size_limit */
1455     NULL,                     /* headers_rewrite */
1456     NULL,                     /* rewrite_rules */
1457     0,                        /* rewrite_existflags */
1458     300,                      /* filter_timeout */
1459     FALSE,                    /* body_only */
1460     FALSE,                    /* delivery_date_add */
1461     FALSE,                    /* envelope_to_add */
1462     FALSE,                    /* headers_only */
1463     FALSE,                    /* rcpt_include_affixes */
1464     FALSE,                    /* return_path_add */
1465     FALSE,                    /* return_output */
1466     FALSE,                    /* return_fail_output */
1467     FALSE,                    /* log_output */
1468     FALSE,                    /* log_fail_output */
1469     FALSE,                    /* log_defer_output */
1470     TRUE_UNSET                /* retry_use_local_part: BOOL, but set neither
1471                                  1 nor 0 so can detect unset */
1472 #ifndef DISABLE_EVENT
1473    ,NULL                      /* event_action */
1474 #endif
1475 };
1476
1477 int     transport_count;
1478 uschar *transport_name          = NULL;
1479 int     transport_newlines;
1480 const uschar **transport_filter_argv  = NULL;
1481 int     transport_filter_timeout;
1482 BOOL    transport_filter_timed_out = FALSE;
1483 int     transport_write_timeout= 0;
1484
1485 tree_node  *tree_dns_fails     = NULL;
1486 tree_node  *tree_duplicates    = NULL;
1487 tree_node  *tree_nonrecipients = NULL;
1488 tree_node  *tree_unusable      = NULL;
1489
1490 BOOL    trusted_caller         = FALSE;
1491 BOOL    trusted_config         = TRUE;
1492 gid_t  *trusted_groups         = NULL;
1493 uid_t  *trusted_users          = NULL;
1494 uschar *timezone_string        = US TIMEZONE_DEFAULT;
1495
1496 uschar *unknown_login          = NULL;
1497 uschar *unknown_username       = NULL;
1498 uschar *untrusted_set_sender   = NULL;
1499
1500 /*  A regex for matching a "From_" line in an incoming message, in the form
1501
1502     From ph10 Fri Jan  5 12:35 GMT 1996
1503
1504 which  the "mail" commands send to the MTA (undocumented, of course), or in
1505 the  form
1506
1507     From ph10 Fri, 7 Jan 97 14:00:00 GMT
1508
1509 which  is apparently used by some UUCPs, despite it not being in RFC 976.
1510 Because  of variations in time formats, just match up to the minutes. That
1511 should  be sufficient. Examples have been seen of time fields like 12:1:03,
1512 so  just require one digit for hours and minutes. The weekday is also absent
1513 in  some forms. */
1514
1515 uschar *uucp_from_pattern      = US
1516    "^From\\s+(\\S+)\\s+(?:[a-zA-Z]{3},?\\s+)?"    /* Common start */
1517    "(?:"                                          /* Non-extracting bracket */
1518    "[a-zA-Z]{3}\\s+\\d?\\d|"                      /* First form */
1519    "\\d?\\d\\s+[a-zA-Z]{3}\\s+\\d\\d(?:\\d\\d)?"  /* Second form */
1520    ")"                                            /* End alternation */
1521    "\\s+\\d\\d?:\\d\\d?";                         /* Start of time */
1522
1523 uschar *uucp_from_sender       = US"$1";
1524
1525 uschar *verify_mode            = NULL;
1526 uschar *version_copyright      =
1527  US"Copyright (c) University of Cambridge, 1995 - 2017\n"
1528    "(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017";
1529 uschar *version_date           = US"?";
1530 uschar *version_cnumber        = US"????";
1531 uschar *version_string         = US"?";
1532
1533 uschar *warn_message_file      = NULL;
1534 int     warning_count          = 0;
1535 uschar *warnmsg_delay          = NULL;
1536 uschar *warnmsg_recipients     = NULL;
1537 BOOL    write_rejectlog        = TRUE;
1538
1539
1540 /*  End of globals.c */