src/src/globals.h

   1 /* $Cambridge: exim/src/src/globals.h,v 1.42 2007/01/08 10:50:18 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2007 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10 /* Almost all the global variables are defined together in this one header, so
  11 that they are easy to find. However, those that are visible during the
  12 compilation of the local_scan() function are defined separately in the
  13 local_scan.h header file. */
  14
  15 /* First put any specials that are required for some operating systems. */
  16
  17 #ifdef NEED_H_ERRNO
  18 extern int h_errno;
  19 #endif
  20
  21 /* Now things that are present only when configured. */
  22
  23 #ifdef EXIM_PERL
  24 extern uschar *opt_perl_startup;       /* Startup code for Perl interpreter */
  25 extern BOOL    opt_perl_at_start;      /* Start Perl interpreter at start */
  26 extern BOOL    opt_perl_started;       /* Set once interpreter started */
  27 #endif
  28
  29 #ifdef EXPAND_DLFUNC
  30 extern tree_node *dlobj_anchor;        /* Tree of dynamically-loaded objects */
  31 #endif
  32
  33 #ifdef LOOKUP_IBASE
  34 extern uschar *ibase_servers;
  35 #endif
  36
  37 #ifdef LOOKUP_LDAP
  38 extern uschar *eldap_default_servers;  /* List of default servers */
  39 extern int     eldap_version;          /* LDAP version */
  40 #endif
  41
  42 #ifdef LOOKUP_MYSQL
  43 extern uschar *mysql_servers;          /* List of servers and connect info */
  44 #endif
  45
  46 #ifdef LOOKUP_ORACLE
  47 extern uschar *oracle_servers;         /* List of servers and connect info */
  48 #endif
  49
  50 #ifdef LOOKUP_PGSQL
  51 extern uschar *pgsql_servers;          /* List of servers and connect info */
  52 #endif
  53
  54 #ifdef LOOKUP_SQLITE
  55 extern int     sqlite_lock_timeout;    /* Internal lock waiting timeout */
  56 #endif
  57
  58 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  59 extern BOOL    move_frozen_messages;   /* Get them out of the normal directory */
  60 #endif
  61
  62 /* These variables are outside the #ifdef because it keeps the code less
  63 cluttered in several places (e.g. during logging) if we can always refer to
  64 them. Also, the tls_ variables are now always visible. */
  65
  66 extern int     tls_active;             /* fd/socket when in a TLS session */
  67 extern BOOL    tls_certificate_verified; /* Client certificate verified */
  68 extern uschar *tls_cipher;             /* Cipher used */
  69 extern BOOL    tls_on_connect;         /* For older MTAs that don't STARTTLS */
  70 extern uschar *tls_on_connect_ports;   /* Ports always tls-on-connect */
  71 extern uschar *tls_peerdn;             /* DN from peer */
  72
  73 #ifdef SUPPORT_TLS
  74 extern const pcre *regex_STARTTLS;     /* For recognizing STARTTLS settings */
  75 extern uschar *tls_advertise_hosts;    /* host for which TLS is advertised */
  76 extern uschar *tls_certificate;        /* Certificate file */
  77 extern uschar *tls_crl;                /* CRL File */
  78 extern uschar *tls_dhparam;            /* DH param file */
  79 extern BOOL    tls_offered;            /* Server offered TLS */
  80 extern uschar *tls_privatekey;         /* Private key file */
  81 extern BOOL    tls_remember_esmtp;     /* For YAEB */
  82 extern uschar *tls_require_ciphers;    /* So some can be avoided */
  83 extern uschar *tls_try_verify_hosts;   /* Optional client verification */
  84 extern uschar *tls_verify_certificates;/* Path for certificates to check */
  85 extern uschar *tls_verify_hosts;       /* Mandatory client verification */
  86 #endif
  87
  88
  89 /* Input-reading functions for messages, so we can use special ones for
  90 incoming TCP/IP. */
  91
  92 extern int (*receive_getc)(void);
  93 extern int (*receive_ungetc)(int);
  94 extern int (*receive_feof)(void);
  95 extern int (*receive_ferror)(void);
  96
  97
  98 /* For clearing, saving, restoring address expansion variables. We have to have
  99 the size of this vector set explicitly, because it is referenced from more than
 100 one module. */
 101
 102 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
 103
 104 /* General global variables */
 105
 106 extern BOOL    accept_8bitmime;        /* Allow *BITMIME incoming */
 107 extern header_line *acl_added_headers; /* Headers added by an ACL */
 108 extern tree_node *acl_anchor;          /* Tree of named ACLs */
 109 extern uschar *acl_not_smtp;           /* ACL run for non-SMTP messages */
 110 #ifdef WITH_CONTENT_SCAN
 111 extern uschar *acl_not_smtp_mime;      /* For MIME parts of ditto */
 112 #endif
 113 extern uschar *acl_not_smtp_start;     /* ACL run at the beginning of a non-SMTP session */
 114 extern uschar *acl_smtp_auth;          /* ACL run for AUTH */
 115 extern uschar *acl_smtp_connect;       /* ACL run on SMTP connection */
 116 extern uschar *acl_smtp_data;          /* ACL run after DATA received */
 117 extern uschar *acl_smtp_etrn;          /* ACL run for ETRN */
 118 extern uschar *acl_smtp_expn;          /* ACL run for EXPN */
 119 extern uschar *acl_smtp_helo;          /* ACL run for HELO/EHLO */
 120 extern uschar *acl_smtp_mail;          /* ACL run for MAIL */
 121 extern uschar *acl_smtp_mailauth;      /* ACL run for MAIL AUTH */
 122 #ifdef WITH_CONTENT_SCAN
 123 extern uschar *acl_smtp_mime;          /* ACL run after DATA, before acl_smtp_data, for each MIME part */
 124 #endif
 125 extern uschar *acl_smtp_predata;       /* ACL run for DATA command */
 126 extern uschar *acl_smtp_quit;          /* ACL run for QUIT */
 127 extern uschar *acl_smtp_rcpt;          /* ACL run for RCPT */
 128 extern uschar *acl_smtp_starttls;      /* ACL run for STARTTLS */
 129 extern uschar *acl_smtp_vrfy;          /* ACL run for VRFY */
 130 extern BOOL    acl_temp_details;       /* TRUE to give details for 4xx error */
 131 extern tree_node *acl_var_c;           /* ACL connection variables */
 132 extern tree_node *acl_var_m;           /* ACL messsage variables */
 133 extern uschar *acl_verify_message;     /* User message for verify failure */
 134 extern string_item *acl_warn_logged;   /* Logged lines */
 135 extern uschar *acl_wherecodes[];       /* Response codes for ACL fails */
 136 extern uschar *acl_wherenames[];       /* Names for messages */
 137 extern BOOL    active_local_from_check;/* For adding Sender: (switchable) */
 138 extern BOOL    active_local_sender_retain; /* For keeping Sender: (switchable) */
 139 extern address_item *addr_duplicate;   /* Duplicate address list */
 140 extern address_item address_defaults;  /* Default data for address item */
 141 extern uschar *address_file;           /* Name of file when delivering to one */
 142 extern uschar *address_pipe;           /* Pipe command when delivering to one */
 143 extern BOOL    address_test_mode;      /* True for -bt */
 144 extern tree_node *addresslist_anchor;  /* Tree of defined address lists */
 145 extern int     addresslist_count;      /* Number defined */
 146 extern gid_t  *admin_groups;           /* List of admin groups */
 147 extern BOOL    admin_user;             /* True if caller can do admin */
 148 extern BOOL    allow_auth_unadvertised;/* As it says */
 149 extern BOOL    allow_domain_literals;  /* As it says */
 150 extern BOOL    allow_mx_to_ip;         /* Allow MX records to -> ip address */
 151 extern BOOL    allow_unqualified_recipient; /* As it says */
 152 extern BOOL    allow_unqualified_sender; /* Ditto */
 153 extern BOOL    allow_utf8_domains;     /* For experimenting */
 154 extern uschar *authenticated_id;       /* ID that was authenticated */
 155 extern uschar *authenticated_sender;   /* From AUTH on MAIL */
 156 extern BOOL    authentication_failed;  /* TRUE if AUTH was tried and failed */
 157 extern uschar *auth_advertise_hosts;   /* Only advertise to these */
 158 extern auth_info auths_available[];    /* Vector of available auth mechanisms */
 159 extern auth_instance *auths;           /* Chain of instantiated auths */
 160 extern auth_instance auth_defaults;    /* Default values */
 161 extern uschar *auth_defer_msg;         /* Error message for log */
 162 extern uschar *auth_defer_user_msg;    /* Error message for user */
 163 extern uschar *auth_vars[];            /* $authn variables */
 164 extern int     auto_thaw;              /* Auto-thaw interval */
 165 #ifdef WITH_CONTENT_SCAN
 166 extern uschar *av_scanner;             /* AntiVirus scanner to use for the malware condition */
 167 #endif
 168
 169 extern BOOL    background_daemon;      /* Set FALSE to keep in foreground */
 170 extern uschar *base62_chars;           /* Table of base-62 characters */
 171 extern uschar *bi_command;             /* Command for -bi option */
 172 extern uschar *big_buffer;             /* Used for various temp things */
 173 extern int     big_buffer_size;        /* Current size (can expand) */
 174 #ifdef EXPERIMENTAL_BRIGHTMAIL
 175 extern uschar *bmi_alt_location;       /* expansion variable that contains the alternate location for the rcpt (available during routing) */
 176 extern uschar *bmi_base64_tracker_verdict; /* expansion variable with base-64 encoded OLD verdict string (available during routing) */
 177 extern uschar *bmi_base64_verdict;     /* expansion variable with base-64 encoded verdict string (available during routing) */
 178 extern uschar *bmi_config_file;        /* Brightmail config file */
 179 extern int     bmi_deliver;            /* Flag that determines if the message should be delivered to the rcpt (available during routing) */
 180 extern int     bmi_run;                /* Flag that determines if message should be run through Brightmail server */
 181 extern uschar *bmi_verdicts;           /* BASE64-encoded verdicts with recipient lists */
 182 #endif
 183 extern int     body_linecount;         /* Line count in body */
 184 extern int     body_zerocount;         /* Binary zero count in body */
 185 extern uschar *bounce_message_file;    /* Template file */
 186 extern uschar *bounce_message_text;    /* One-liner */
 187 extern uschar *bounce_recipient;       /* When writing an errmsg */
 188 extern BOOL    bounce_return_body;     /* Include body in returned message */
 189 extern BOOL    bounce_return_message;  /* Include message in bounce */
 190 extern int     bounce_return_size_limit; /* Max amount to return */
 191 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
 192 extern int     bsmtp_transaction_linecount; /* Start of last transaction */
 193
 194 extern int     callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
 195 extern int     callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
 196 extern int     callout_cache_positive_expire; /* Time for positive callout cache records to expire */
 197 extern int     callout_cache_negative_expire; /* Time for negative callout cache records to expire */
 198 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
 199 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
 200 extern int     check_log_inodes;       /* Minimum for message acceptance */
 201 extern int     check_log_space;        /* Minimum for message acceptance */
 202 extern BOOL    check_rfc2047_length;   /* Check RFC 2047 encoded string length */
 203 extern int     check_spool_inodes;     /* Minimum for message acceptance */
 204 extern int     check_spool_space;      /* Minimum for message acceptance */
 205 extern int     clmacro_count;          /* Number of command line macros */
 206 extern uschar *clmacros[];             /* Copy of them, for re-exec */
 207 extern int     connection_max_messages;/* Max down one SMTP connection */
 208 extern BOOL    config_changed;         /* True if -C used */
 209 extern FILE   *config_file;            /* Configuration file */
 210 extern uschar *config_filename;        /* Configuration file name */
 211 #ifdef CONFIGURE_GROUP
 212 extern gid_t   config_gid;             /* Additional group owner */
 213 #endif
 214 extern int     config_lineno;          /* Line number */
 215 extern uschar *config_main_filelist;   /* List of possible config files */
 216 extern uschar *config_main_filename;   /* File name actually used */
 217 #ifdef CONFIGURE_OWNER
 218 extern uid_t   config_uid;             /* Additional owner */
 219 #endif
 220 extern uschar *continue_hostname;      /* Host for continued delivery */
 221 extern uschar *continue_host_address;  /* IP address for ditto */
 222 extern BOOL    continue_more;          /* Flag more addresses waiting */
 223 extern int     continue_sequence;      /* Sequence num for continued delivery */
 224 extern uschar *continue_transport;     /* Transport for continued delivery */
 225
 226 extern uschar *csa_status;             /* Client SMTP Authorization result */
 227
 228 extern BOOL    daemon_listen;          /* True if listening required */
 229 extern uschar *daemon_smtp_port;       /* Can be a list of ports */
 230 extern int     daemon_startup_retries; /* Number of times to retry */
 231 extern int     daemon_startup_sleep;   /* Sleep between retries */
 232 extern BOOL    debug_daemon;           /* Debug the daemon process only */
 233 extern int     debug_fd;               /* The fd for debug_file */
 234 extern FILE   *debug_file;             /* Where to write debugging info */
 235 extern bit_table debug_options[];      /* Table of debug options */
 236 extern int     debug_options_count;    /* Size of table */
 237 extern int     delay_warning[];        /* Times between warnings */
 238 extern uschar *delay_warning_condition; /* Condition string for warnings */
 239 extern BOOL    delivery_date_remove;   /* Remove delivery-date headers */
 240
 241 extern uschar *deliver_address_data;   /* Arbitrary data for an address */
 242 extern int     deliver_datafile;       /* FD for data part of message */
 243 extern uschar *deliver_domain;         /* The local domain for delivery */
 244 extern uschar *deliver_domain_data;    /* From domain lookup */
 245 extern uschar *deliver_domain_orig;    /* The original local domain for delivery */
 246 extern uschar *deliver_domain_parent;  /* The parent domain for delivery */
 247 extern BOOL    deliver_drop_privilege; /* TRUE for unprivileged delivery */
 248 extern BOOL    deliver_firsttime;      /* True for first delivery attempt */
 249 extern BOOL    deliver_force;          /* TRUE if delivery was forced */
 250 extern BOOL    deliver_freeze;         /* TRUE if delivery is frozen */
 251 extern int     deliver_frozen_at;      /* Time of freezing */
 252 extern uschar *deliver_home;           /* Home directory for pipes */
 253 extern uschar *deliver_host;           /* (First) host for routed local deliveries */
 254                                        /* Remote host for filter */
 255 extern uschar *deliver_host_address;   /* Address for remote delivery filter */
 256 extern uschar *deliver_in_buffer;      /* Buffer for copying file */
 257 extern ino_t   deliver_inode;          /* Inode for appendfile */
 258 extern uschar *deliver_localpart;      /* The local part for delivery */
 259 extern uschar *deliver_localpart_data; /* From local part lookup */
 260 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
 261 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
 262 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
 263 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
 264 extern BOOL    deliver_force_thaw;     /* TRUE to force thaw in queue run */
 265 extern BOOL    deliver_manual_thaw;    /* TRUE if manually thawed */
 266 extern uschar *deliver_out_buffer;     /* Buffer for copying file */
 267 extern int     deliver_queue_load_max; /* Different value for queue running */
 268 extern address_item *deliver_recipients; /* Current set of addresses */
 269 extern uschar *deliver_selectstring;   /* For selecting by recipient */
 270 extern BOOL    deliver_selectstring_regex; /* String is regex */
 271 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
 272 extern BOOL    deliver_selectstring_sender_regex; /* String is regex */
 273 #ifdef WITH_OLD_DEMIME
 274 extern int     demime_errorlevel;      /* Severity of MIME error */
 275 extern int     demime_ok;              /* Nonzero if message has been demimed */
 276 extern uschar *demime_reason;          /* Reason for broken MIME container */
 277 #endif
 278 extern BOOL    disable_ipv6;           /* Don't do any IPv6 things */
 279 extern BOOL    disable_logging;        /* Disables log writing when TRUE */
 280
 281 #ifdef EXPERIMENTAL_DOMAINKEYS
 282 extern uschar *dk_signing_domain;      /* Domain used for signing a message. */
 283 extern uschar *dk_signing_selector;    /* Selector used for signing a message. */
 284 extern int     dk_do_verify;           /* DK verification switch. Set with ACL control statement. */
 285 #endif
 286
 287 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
 288 extern int     dns_csa_search_limit;   /* How deep to search for CSA SRV records */
 289 extern BOOL    dns_csa_use_reverse;    /* Check CSA in reverse DNS? (non-standard) */
 290 extern uschar *dns_ipv4_lookup;        /* For these domains, don't look for AAAA (or A6) */
 291 extern int     dns_retrans;            /* Retransmission time setting */
 292 extern int     dns_retry;              /* Number of retries */
 293 extern uschar *dnslist_domain;         /* DNS (black) list domain */
 294 extern uschar *dnslist_text;           /* DNS (black) list text message */
 295 extern uschar *dnslist_value;          /* DNS (black) list IP address */
 296 extern tree_node *domainlist_anchor;   /* Tree of defined domain lists */
 297 extern int     domainlist_count;       /* Number defined */
 298 extern BOOL    dont_deliver;           /* TRUE for -N option */
 299 extern BOOL    dot_ends;               /* TRUE if "." ends non-SMTP input */
 300
 301 /* This option is now a no-opt, retained for compatibility */
 302 extern BOOL    drop_cr;                /* For broken local MUAs */
 303
 304 extern BOOL    enable_dollar_recipients; /* Make $recipients available */
 305 extern int     envelope_to_remove;     /* Remove envelope_to_headers */
 306 extern int     errno_quota;            /* Quota errno in this OS */
 307 extern int     error_handling;         /* Error handling style */
 308 extern uschar *errors_copy;            /* For taking copies of errors */
 309 extern uschar *errors_reply_to;        /* Reply-to for error messages */
 310 extern int     errors_sender_rc;       /* Return after message to sender*/
 311 extern gid_t   exim_gid;               /* To be used with exim_uid */
 312 extern BOOL    exim_gid_set;           /* TRUE if exim_gid set */
 313 extern uschar *exim_path;              /* Path to exec exim */
 314 extern uid_t   exim_uid;               /* Non-root uid for exim */
 315 extern BOOL    exim_uid_set;           /* TRUE if exim_uid set */
 316 extern int     expand_forbid;          /* RDO flags for forbidding things */
 317 extern int     expand_nlength[];       /* Lengths of numbered strings */
 318 extern int     expand_nmax;            /* Max numerical value */
 319 extern uschar *expand_nstring[];       /* Numbered strings */
 320 extern BOOL    expand_string_forcedfail; /* TRUE if failure was "expected" */
 321 extern BOOL    extract_addresses_remove_arguments; /* Controls -t behaviour */
 322 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
 323
 324 extern int     fake_response;          /* Fake FAIL or DEFER response to data */
 325 extern uschar *fake_response_text;     /* User defined message for the above. Default is in globals.c. */
 326 extern int     filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
 327 extern BOOL    filter_running;         /* TRUE while running a filter */
 328 extern int     filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
 329 extern int     filter_test;            /* Filter test type */
 330 extern uschar *filter_test_sfile;      /* System filter test file */
 331 extern uschar *filter_test_ufile;      /* User filter test file */
 332 extern uschar *filter_thisaddress;     /* For address looping */
 333 extern int     finduser_retries;       /* Retry count for getpwnam() */
 334 extern uid_t   fixed_never_users[];    /* Can't be overridden */
 335 #ifdef WITH_OLD_DEMIME
 336 extern uschar *found_extension;        /* demime acl condition: file extension found */
 337 #endif
 338 extern uschar *freeze_tell;            /* Message on (some) freezings */
 339 extern uschar *freeze_tell_config;     /* The configured setting */
 340 extern uschar *fudged_queue_times;     /* For use in test harness */
 341
 342 extern uschar *gecos_name;             /* To be expanded when pattern matches */
 343 extern uschar *gecos_pattern;          /* Pattern to match */
 344 extern rewrite_rule *global_rewrite_rules;  /* Chain of rewriting rules */
 345
 346 extern int     header_insert_maxlen;   /* Max for inserting headers */
 347 extern int     header_maxsize;         /* Max total length for header */
 348 extern int     header_line_maxsize;    /* Max for an individual line */
 349 extern header_name header_names[];     /* Table of header names */
 350 extern int     header_names_size;      /* Number of entries */
 351 extern BOOL    header_rewritten;       /* TRUE if header changed by router */
 352 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
 353 extern uschar *helo_allow_chars;       /* Rogue chars to allow in HELO/EHLO */
 354 extern uschar *helo_lookup_domains;    /* If these given, lookup host name */
 355 extern uschar *helo_try_verify_hosts;  /* Soft check HELO argument for these */
 356 extern BOOL    helo_verified;          /* True if HELO verified */
 357 extern BOOL    helo_verify_failed;     /* True if attempt failed */
 358 extern uschar *helo_verify_hosts;      /* Hard check HELO argument for these */
 359 extern uschar *hex_digits;             /* Used in several places */
 360 extern uschar *hold_domains;           /* Hold up deliveries to these */
 361 extern BOOL    host_find_failed_syntax;/* DNS syntax check failure */
 362 extern BOOL    host_checking_callout;  /* TRUE if real callout wanted */
 363 extern uschar *host_data;              /* Obtained from lookup in ACL */
 364 extern uschar *host_lookup;            /* For which IP addresses are always looked up */
 365 extern BOOL    host_lookup_deferred;   /* TRUE if lookup deferred */
 366 extern BOOL    host_lookup_failed;     /* TRUE if lookup failed */
 367 extern uschar *host_lookup_order;      /* Order of host lookup types */
 368 extern uschar *host_lookup_msg;        /* Text for why it failed */
 369 extern int     host_number;            /* For sharing spools */
 370 extern uschar *host_number_string;     /* For expanding */
 371 extern uschar *host_reject_connection; /* Reject these hosts */
 372 extern tree_node *hostlist_anchor;     /* Tree of defined host lists */
 373 extern int     hostlist_count;         /* Number defined */
 374 extern uschar *hosts_connection_nolog; /* Limits the logging option */
 375 extern uschar *hosts_treat_as_local;   /* For routing */
 376
 377 extern int     ignore_bounce_errors_after; /* Keep them for this time. */
 378 extern BOOL    ignore_fromline_local;  /* Local SMTP ignore fromline */
 379 extern uschar *ignore_fromline_hosts;  /* Hosts permitted to send "From " */
 380 extern BOOL    is_inetd;               /* True for inetd calls */
 381
 382 extern int     journal_fd;             /* Fd for journal file */
 383
 384 extern int     keep_malformed;         /* Time to keep malformed messages */
 385
 386 extern uschar *eldap_dn;               /* Where LDAP DNs are left */
 387 extern int     load_average;           /* Most recently read load average */
 388 extern BOOL    local_error_message;    /* True if handling one of these */
 389 extern BOOL    local_from_check;       /* For adding Sender: (global value) */
 390 extern uschar *local_from_prefix;      /* Permitted prefixes */
 391 extern uschar *local_from_suffix;      /* Permitted suffixes */
 392 extern uschar *local_interfaces;       /* For forcing specific interfaces */
 393 extern uschar *local_scan_data;        /* Text returned by local_scan() */
 394 extern optionlist local_scan_options[];/* Option list for local_scan() */
 395 extern int     local_scan_options_count; /* Size of the list */
 396 extern int     local_scan_timeout;     /* Timeout for local_scan() */
 397 extern BOOL    local_sender_retain;    /* Retain Sender: (with no From: check) */
 398 extern gid_t   local_user_gid;         /* As it says; may be set in routers */
 399 extern uid_t   local_user_uid;         /* As it says; may be set in routers */
 400 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
 401 extern int     localpartlist_count;    /* Number defined */
 402 extern uschar *log_buffer;             /* For constructing log entries */
 403 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
 404 extern uschar *log_file_path;          /* If unset, use default */
 405 extern bit_table log_options[];        /* Table of options */
 406 extern int     log_options_count;      /* Size of table */
 407 extern int     log_reject_target;      /* Target log for ACL rejections */
 408 extern uschar *log_selector_string;    /* As supplied in the config */
 409 extern FILE   *log_stderr;             /* Copy of stderr for log use, or NULL */
 410 extern BOOL    log_testing_mode;       /* TRUE in various testing modes */
 411 extern BOOL    log_timezone;           /* TRUE to include the timezone in log lines */
 412 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
 413 extern uschar *login_sender_address;   /* The actual sender address */
 414 extern lookup_info lookup_list[];      /* Vector of available lookups */
 415 extern int     lookup_list_count;      /* Number of entries in the list */
 416 extern int     lookup_open_max;        /* Max lookup files to cache */
 417 extern uschar *lookup_value;           /* Value looked up from file */
 418
 419 extern macro_item *macros;             /* Configuration macros */
 420 extern uschar *mailstore_basename;     /* For mailstore deliveries */
 421 #ifdef WITH_CONTENT_SCAN
 422 extern uschar *malware_name;           /* Name of virus or malware ("W32/Klez-H") */
 423 #endif
 424 extern int     max_username_length;    /* For systems with broken getpwnam() */
 425 extern int     message_age;            /* In seconds */
 426 extern uschar *message_body;           /* Start of message body for filter */
 427 extern uschar *message_body_end;       /* End of message body for filter */
 428 extern int     message_body_size;      /* Sic */
 429 extern int     message_body_visible;   /* Amount visible in message_body */
 430 extern int     message_ended;          /* State of message reading and how ended */
 431 extern uschar *message_headers;        /* When built */
 432 extern uschar  message_id_option[];    /* -E<message-id> for use as option */
 433 extern uschar *message_id_external;    /* External form of following */
 434 extern uschar *message_id_domain;      /* Expanded to form domain-part of message_id */
 435 extern uschar *message_id_text;        /* Expanded to form message_id */
 436 extern struct timeval message_id_tv;   /* Time used to create last message_id */
 437 extern int     message_linecount;      /* As it says */
 438 extern BOOL    message_logs;           /* TRUE to write message logs */
 439 extern int     message_size;           /* Size of message */
 440 extern uschar *message_size_limit;     /* As it says */
 441 extern uschar  message_subdir[];       /* Subdirectory for messages */
 442 extern uschar *message_reference;      /* Reference for error messages */
 443
 444 /* MIME ACL expandables */
 445 #ifdef WITH_CONTENT_SCAN
 446 extern int     mime_anomaly_level;
 447 extern uschar *mime_anomaly_text;
 448 extern uschar *mime_boundary;
 449 extern uschar *mime_charset;
 450 extern uschar *mime_content_description;
 451 extern uschar *mime_content_disposition;
 452 extern uschar *mime_content_id;
 453 extern unsigned int mime_content_size;
 454 extern uschar *mime_content_transfer_encoding;
 455 extern uschar *mime_content_type;
 456 extern uschar *mime_decoded_filename;
 457 extern uschar *mime_filename;
 458 extern int     mime_is_multipart;
 459 extern int     mime_is_coverletter;
 460 extern int     mime_is_rfc822;
 461 extern int     mime_part_count;
 462 #endif
 463
 464 extern BOOL    mua_wrapper;            /* TRUE when Exim is wrapping an MUA */
 465
 466 extern uid_t  *never_users;            /* List of uids never to be used */
 467 #ifdef WITH_CONTENT_SCAN
 468 extern BOOL    no_mbox_unspool;        /* don't unlink files in /scan directory */
 469 #endif
 470 extern BOOL    no_multiline_responses; /* For broken clients */
 471
 472 extern optionlist optionlist_auths[];      /* These option lists are made */
 473 extern int     optionlist_auths_size;      /* global so that readconf can */
 474 extern optionlist optionlist_routers[];    /* see them for printing out   */
 475 extern int     optionlist_routers_size;    /* the options.                */
 476 extern optionlist optionlist_transports[];
 477 extern int     optionlist_transports_size;
 478
 479 extern uid_t   original_euid;          /* Original effective uid */
 480 extern gid_t   originator_gid;         /* Gid of whoever wrote spool file */
 481 extern uschar *originator_login;       /* Login of same */
 482 extern uschar *originator_name;        /* Full name of same */
 483 extern uid_t   originator_uid;         /* Uid of ditto */
 484 extern uschar *override_local_interfaces; /* Value of -oX argument */
 485 extern uschar *override_pid_file_path; /* Value of -oP argument */
 486
 487 extern BOOL    parse_allow_group;      /* Allow group syntax */
 488 extern BOOL    parse_found_group;      /* In the middle of a group */
 489 extern uschar *percent_hack_domains;   /* Local domains for which '% operates */
 490 extern uschar *pid_file_path;          /* For writing daemon pids */
 491 extern uschar *pipelining_advertise_hosts; /* As it says */
 492 extern BOOL    preserve_message_logs;  /* Save msglog files */
 493 extern uschar *primary_hostname;       /* Primary name of this computer */
 494 extern BOOL    print_topbitchars;      /* Topbit chars are printing chars */
 495 extern uschar  process_info[];         /* For SIGUSR1 output */
 496 extern uschar *process_log_path;       /* Alternate path */
 497 extern BOOL    prod_requires_admin;    /* TRUE if prodding requires admin */
 498 extern uschar *prvscheck_address;      /* Set during prvscheck expansion item */
 499 extern uschar *prvscheck_keynum;       /* Set during prvscheck expansion item */
 500 extern uschar *prvscheck_result;       /* Set during prvscheck expansion item */
 501
 502 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
 503 extern uschar *qualify_domain_sender;  /* Domain to qualify senders with */
 504 extern BOOL    queue_2stage;           /* Run queue in 2-stage manner */
 505 extern uschar *queue_domains;          /* Queue these domains */
 506 extern BOOL    queue_list_requires_admin; /* TRUE if -bp requires admin */
 507 extern BOOL    queue_run_first_delivery; /* If TRUE, first deliveries only */
 508 extern BOOL    queue_run_force;        /* TRUE to force during queue run */
 509 extern BOOL    queue_run_local;        /* Local deliveries only in queue run */
 510 extern BOOL    queue_running;          /* TRUE for queue running process and */
 511                                        /*   immediate children */
 512 extern pid_t   queue_run_pid;          /* PID of the queue running process or 0 */
 513 extern int     queue_run_pipe;         /* Pipe for synchronizing */
 514 extern int     queue_interval;         /* Queue running interval */
 515 extern BOOL    queue_only;             /* TRUE to disable immediate delivery */
 516 extern int     queue_only_load;        /* Max load before auto-queue */
 517 extern uschar *queue_only_file;        /* Queue if file exists/not-exists */
 518 extern BOOL    queue_only_override;    /* Allow override from command line */
 519 extern BOOL    queue_only_policy;      /* ACL or local_scan wants queue_only */
 520 extern BOOL    queue_run_in_order;     /* As opposed to random */
 521 extern int     queue_run_max;          /* Max queue runners */
 522 extern BOOL    queue_smtp;             /* Disable all immediate STMP (-odqs)*/
 523 extern uschar *queue_smtp_domains;     /* Ditto, for these domains */
 524
 525 extern unsigned int random_seed;       /* Seed for random numbers */
 526 extern tree_node *ratelimiters_cmd;    /* Results of command ratelimit checks */
 527 extern tree_node *ratelimiters_conn;   /* Results of connection ratelimit checks */
 528 extern tree_node *ratelimiters_mail;   /* Results of per-mail ratelimit checks */
 529 extern uschar *raw_active_hostname;    /* Pre-expansion */
 530 extern uschar *raw_sender;             /* Before rewriting */
 531 extern uschar **raw_recipients;        /* Before rewriting */
 532 extern int     raw_recipients_count;
 533 extern int     rcpt_count;             /* Count of RCPT commands in a message */
 534 extern int     rcpt_fail_count;        /* Those that got 5xx */
 535 extern int     rcpt_defer_count;       /* Those that got 4xx */
 536 extern gid_t   real_gid;               /* Real gid */
 537 extern uid_t   real_uid;               /* Real user running program */
 538 extern BOOL    really_exim;            /* FALSE in utilities */
 539 extern BOOL    receive_call_bombout;   /* Flag for crashing log */
 540 extern int     receive_linecount;      /* Mainly for BSMTP errors */
 541 extern int     receive_messagecount;   /* Mainly for BSMTP errors */
 542 extern int     receive_timeout;        /* For non-SMTP acceptance */
 543 extern int     received_count;         /* Count of Received: headers */
 544 extern uschar *received_for;           /* For "for" field */
 545 extern uschar *received_header_text;   /* Definition of Received: header */
 546 extern int     received_headers_max;   /* Max count of Received: headers */
 547 extern int     received_time;          /* Time the message was received */
 548 extern uschar *recipient_data;         /* lookup data for recipients */
 549 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
 550 extern uschar *recipient_verify_failure; /* What went wrong */
 551 extern BOOL    recipients_discarded;   /* By an ACL */
 552 extern int     recipients_list_max;    /* Maximum number fitting in list */
 553 extern int     recipients_max;         /* Max permitted */
 554 extern int     recipients_max_reject;  /* If TRUE, reject whole message */
 555 extern const pcre *regex_AUTH;         /* For recognizing AUTH settings */
 556 extern const pcre  *regex_check_dns_names; /* For DNS name checking */
 557 extern const pcre  *regex_From;        /* For recognizing "From_" lines */
 558 extern const pcre  *regex_IGNOREQUOTA; /* For recognizing IGNOREQUOTA (LMTP) */
 559 extern const pcre  *regex_PIPELINING;  /* For recognizing PIPELINING */
 560 extern const pcre  *regex_SIZE;        /* For recognizing SIZE settings */
 561 extern const pcre  *regex_smtp_code;   /* For recognizing SMTP codes */
 562 extern const pcre  *regex_ismsgid;     /* Compiled r.e. for message it */
 563 #ifdef WITH_CONTENT_SCAN
 564 extern uschar *regex_match_string;     /* regex that matched a line (regex ACL condition) */
 565 #endif
 566 extern int     remote_delivery_count;  /* Number of remote addresses */
 567 extern int     remote_max_parallel;    /* Maximum parallel delivery */
 568 extern uschar *remote_sort_domains;    /* Remote domain sorting order */
 569 extern retry_config *retries;          /* Chain of retry config information */
 570 extern int     retry_data_expire;      /* When to expire retry data */
 571 extern int     retry_interval_max;     /* Absolute maximum */
 572 extern int     retry_maximum_timeout;  /* The maximum timeout */
 573 extern uschar *return_path;            /* Return path for a message */
 574 extern BOOL    return_path_remove;     /* Remove return-path headers */
 575 extern int     rewrite_existflags;     /* Indicate which headers have rewrites */
 576 extern uschar *rfc1413_hosts;          /* RFC hosts */
 577 extern int     rfc1413_query_timeout;  /* Timeout on RFC 1413 calls */
 578 /* extern BOOL    rfc821_domains;  */       /* If set, syntax is 821, not 822 => being abolished */
 579 extern uid_t   root_uid;               /* The uid for root */
 580 extern router_info routers_available[];/* Vector of available routers */
 581 extern router_instance *routers;       /* Chain of instantiated routers */
 582 extern router_instance router_defaults;/* Default values */
 583 extern BOOL    running_in_test_harness; /*TRUE when running_status is patched */
 584 extern ip_address_item *running_interfaces; /* Host's running interfaces */
 585 extern uschar *running_status;         /* Flag string for testing */
 586 extern int     runrc;                  /* rc from ${run} */
 587
 588 extern uschar *search_error_message;   /* Details of lookup problem */
 589 extern BOOL    search_find_defer;      /* Set TRUE if lookup deferred */
 590 extern uschar *self_hostname;          /* Self host after routing->directors */
 591 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
 592 extern uschar *sender_address_data;    /* address_data from sender verify */
 593 extern BOOL    sender_address_forced;  /* Set by -f */
 594 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
 595 extern uschar *sender_data;            /* lookup result for senders */
 596 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
 597 extern uschar *sender_fullhost;        /* Sender host name + address */
 598 extern uschar *sender_helo_name;       /* Host name from HELO/EHLO */
 599 extern uschar **sender_host_aliases;   /* Points to list of alias names */
 600 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
 601 extern BOOL    sender_host_notsocket;  /* Set for -bs and -bS */
 602 extern BOOL    sender_host_unknown;    /* TRUE for -bs and -bS except inetd */
 603 extern uschar *sender_ident;           /* Sender identity via RFC 1413 */
 604 extern BOOL    sender_local;           /* TRUE for local senders */
 605 extern BOOL    sender_name_forced;     /* Set by -F */
 606 extern uschar *sender_rate;            /* Sender rate computed by ACL */
 607 extern uschar *sender_rate_limit;      /* Configured rate limit */
 608 extern uschar *sender_rate_period;     /* Configured smoothing period */
 609 extern uschar *sender_rcvhost;         /* Host data for Received: */
 610 extern BOOL    sender_set_untrusted;   /* Sender set by untrusted caller */
 611 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
 612 extern uschar *sender_verify_failure;  /* What went wrong */
 613 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
 614 extern address_item *sender_verified_failed; /* The one that caused denial */
 615 extern volatile BOOL sigalrm_seen;     /* Flag for sigalrm_handler */
 616 extern uschar **sighup_argv;           /* Args for re-execing after SIGHUP */
 617 extern int     smtp_accept_count;      /* Count of connections */
 618 extern BOOL    smtp_accept_keepalive;  /* Set keepalive on incoming */
 619 extern int     smtp_accept_max;        /* Max SMTP connections */
 620 extern int     smtp_accept_max_nonmail;/* Max non-mail commands in one con */
 621 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
 622 extern int     smtp_accept_max_per_connection; /* Max msgs per connection */
 623 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
 624 extern int     smtp_accept_queue;      /* Queue after so many connections */
 625 extern int     smtp_accept_queue_per_connection; /* Queue after so many msgs */
 626 extern int     smtp_accept_reserve;    /* Reserve these SMTP connections */
 627 extern uschar *smtp_active_hostname;   /* Hostname for this message */
 628 extern BOOL    smtp_authenticated;     /* Sending client has authenticated */
 629 extern uschar *smtp_banner;            /* Banner string (to be expanded) */
 630 extern BOOL    smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
 631 extern uschar *smtp_cmd_argument;      /* For all SMTP commands */
 632 extern uschar *smtp_cmd_buffer;        /* SMTP command buffer */
 633 extern int     smtp_connect_backlog;   /* Max backlog permitted */
 634 extern double  smtp_delay_mail;        /* Current MAIL delay */
 635 extern double  smtp_delay_rcpt;        /* Current RCPT delay */
 636 extern BOOL    smtp_enforce_sync;      /* Enforce sync rules */
 637 extern uschar *smtp_etrn_command;      /* Command to run */
 638 extern BOOL    smtp_etrn_serialize;    /* Only one at once */
 639 extern FILE   *smtp_in;                /* Incoming SMTP input file */
 640 extern int     smtp_load_reserve;      /* Only from reserved if load > this */
 641 extern int     smtp_mailcmd_count;     /* Count of MAIL commands */
 642 extern int     smtp_max_synprot_errors;/* Max syntax/protocol errors */
 643 extern int     smtp_max_unknown_commands; /* As it says */
 644 extern FILE   *smtp_out;               /* Incoming SMTP output file */
 645 extern uschar *smtp_ratelimit_hosts;   /* Rate limit these hosts */
 646 extern uschar *smtp_ratelimit_mail;    /* Parameters for MAIL limiting */
 647 extern uschar *smtp_ratelimit_rcpt;    /* Parameters for RCPT limiting */
 648 extern uschar *smtp_read_error;        /* Message for SMTP input error */
 649 extern int     smtp_receive_timeout;   /* Applies to each received line */
 650 extern uschar *smtp_reserve_hosts;     /* Hosts for reserved slots */
 651 extern BOOL    smtp_return_error_details; /* TRUE to return full info */
 652 extern int     smtp_rlm_base;          /* Base interval for MAIL rate limit */
 653 extern double  smtp_rlm_factor;        /* Factor for MAIL rate limit */
 654 extern int     smtp_rlm_limit;         /* Max delay */
 655 extern int     smtp_rlm_threshold;     /* Threshold for RCPT rate limit */
 656 extern int     smtp_rlr_base;          /* Base interval for RCPT rate limit */
 657 extern double  smtp_rlr_factor;        /* Factor for RCPT rate limit */
 658 extern int     smtp_rlr_limit;         /* Max delay */
 659 extern int     smtp_rlr_threshold;     /* Threshold for RCPT rate limit */
 660 extern BOOL    smtp_use_pipelining;    /* Global for passed connections */
 661 extern BOOL    smtp_use_size;          /* Global for passed connections */
 662
 663 #ifdef WITH_CONTENT_SCAN
 664 extern uschar *spamd_address;          /* address for the spamassassin daemon */
 665 extern uschar *spam_bar;               /* the spam "bar" (textual representation of spam_score) */
 666 extern uschar *spam_report;            /* the spamd report (multiline) */
 667 extern uschar *spam_score;             /* the spam score (float) */
 668 extern uschar *spam_score_int;         /* spam_score * 10 (int) */
 669 #endif
 670 #ifdef EXPERIMENTAL_SPF
 671 extern uschar *spf_header_comment;     /* spf header comment */
 672 extern uschar *spf_received;           /* SPF-Received: header */
 673 extern uschar *spf_result;             /* spf result in string form */
 674 extern uschar *spf_smtp_comment;       /* spf comment to include in SMTP reply */
 675 #endif
 676 extern BOOL    split_spool_directory;  /* TRUE to use multiple subdirs */
 677 extern uschar *spool_directory;        /* Name of spool directory */
 678 #ifdef EXPERIMENTAL_SRS
 679 extern uschar *srs_config;             /* SRS config secret:max age:hash length:use timestamp:use hash */
 680 extern uschar *srs_db_address;         /* SRS db address */
 681 extern uschar *srs_db_key;             /* SRS db key */
 682 extern int     srs_hashlength;         /* SRS hash length */
 683 extern int     srs_hashmin;            /* SRS minimum hash length */
 684 extern int     srs_maxage;             /* SRS max age */
 685 extern uschar *srs_orig_sender;        /* SRS original sender */
 686 extern uschar *srs_orig_recipient;     /* SRS original recipient */
 687 extern uschar *srs_recipient;          /* SRS recipient */
 688 extern uschar *srs_secrets;            /* SRS secrets list */
 689 extern uschar *srs_status;             /* SRS staus */
 690 extern BOOL    srs_usehash;            /* SRS use hash flag */
 691 extern BOOL    srs_usetimestamp;       /* SRS use timestamp flag */
 692 #endif
 693 extern BOOL    strict_acl_vars;        /* ACL variables have to be set before being used */
 694 extern int     string_datestamp_offset;/* After insertion by string_format */
 695 extern BOOL    strip_excess_angle_brackets; /* Surrounding route-addrs */
 696 extern BOOL    strip_trailing_dot;     /* Remove dots at ends of domains */
 697 extern uschar *submission_domain;      /* Domain for submission mode */
 698 extern BOOL    submission_mode;        /* Can be forced from ACL */
 699 extern uschar *submission_name;        /* User name set from ACL */
 700 extern BOOL    suppress_local_fixups;  /* Can be forced from ACL */
 701 extern BOOL    synchronous_delivery;   /* TRUE if -odi is set */
 702 extern BOOL    syslog_duplication;     /* FALSE => no duplicate logging */
 703 extern int     syslog_facility;        /* As defined by Syslog.h */
 704 extern uschar *syslog_processname;     /* 'ident' param to openlog() */
 705 extern BOOL    syslog_timestamp;       /* TRUE if time on syslogs */
 706 extern uschar *system_filter;          /* Name of system filter file */
 707
 708 extern uschar *system_filter_directory_transport;  /* Transports for the */
 709 extern uschar *system_filter_file_transport;       /* system filter */
 710 extern uschar *system_filter_pipe_transport;
 711 extern uschar *system_filter_reply_transport;
 712
 713 extern gid_t   system_filter_gid;      /* Gid for running system filter */
 714 extern BOOL    system_filter_gid_set;  /* TRUE if gid set */
 715 extern uid_t   system_filter_uid;      /* Uid for running system filter */
 716 extern BOOL    system_filter_uid_set;  /* TRUE if uid set */
 717 extern BOOL    system_filtering;       /* TRUE when running system filter */
 718
 719 extern BOOL    tcp_nodelay;            /* Controls TCP_NODELAY on daemon */
 720 extern int     thismessage_size_limit; /* Limit for this message */
 721 extern int     timeout_frozen_after;   /* Max time to keep frozen messages */
 722 extern BOOL    timestamps_utc;         /* Use UTC for all times */
 723 extern int     transport_count;        /* Count of bytes transported */
 724 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
 725 extern int     transport_filter_timeout; /* Timeout for same */
 726 extern BOOL    transport_filter_timed_out; /* True if it did */
 727
 728 extern transport_info transports_available[]; /* Vector of available transports */
 729 extern transport_instance *transports; /* Chain of instantiated transports */
 730 extern transport_instance transport_defaults; /* Default values */
 731
 732 extern int     transport_write_timeout;/* Set to time out individual writes */
 733
 734 extern tree_node *tree_dns_fails;      /* Tree of DNS lookup failures */
 735 extern tree_node *tree_duplicates;     /* Tree of duplicate addresses */
 736 extern tree_node *tree_nonrecipients;  /* Tree of nonrecipient addresses */
 737 extern tree_node *tree_unusable;       /* Tree of unusable addresses */
 738
 739 extern BOOL    trusted_caller;         /* Caller is trusted */
 740 extern gid_t  *trusted_groups;         /* List of trusted groups */
 741 extern uid_t  *trusted_users;          /* List of trusted users */
 742 extern uschar *timezone_string;        /* Required timezone setting */
 743
 744 extern uschar *unknown_login;          /* To use when login id unknown */
 745 extern uschar *unknown_username;       /* Ditto */
 746 extern uschar *untrusted_set_sender;   /* Let untrusted users set these senders */
 747 extern uschar *uucp_from_pattern;      /* For recognizing "From " lines */
 748 extern uschar *uucp_from_sender;       /* For building the sender */
 749
 750 extern uschar *warn_message_file;      /* Template for warning messages */
 751 extern uschar *warnmsg_delay;          /* String form of delay time */
 752 extern uschar *warnmsg_recipients;     /* Recipients of warning message */
 753 extern BOOL    write_rejectlog;        /* Control of reject logging */
 754
 755 extern uschar *version_copyright;      /* Copyright notice */
 756 extern uschar *version_date;           /* Date of compilation */
 757 extern uschar *version_cnumber;        /* Compile number */
 758 extern uschar *version_string;         /* Version string */
 759
 760 extern int     warning_count;          /* Delay warnings sent for this msg */
 761
 762 /* End of globals.h */