src/src/globals.h

   1 /* $Cambridge: exim/src/src/globals.h,v 1.1 2004/10/07 10:39:01 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2004 */
   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 LOOKUP_IBASE
  30 extern uschar *ibase_servers;
  31 #endif
  32
  33 #ifdef LOOKUP_LDAP
  34 extern uschar *eldap_default_servers;  /* List of default servers */
  35 extern int     eldap_version;          /* LDAP version */
  36 #endif
  37
  38 #ifdef LOOKUP_MYSQL
  39 extern uschar *mysql_servers;          /* List of servers and connect info */
  40 #endif
  41
  42 #ifdef LOOKUP_ORACLE
  43 extern uschar *oracle_servers;         /* List of servers and connect info */
  44 #endif
  45
  46 #ifdef LOOKUP_PGSQL
  47 extern uschar *pgsql_servers;          /* List of servers and connect info */
  48 #endif
  49
  50 #ifdef SUPPORT_MOVE_FROZEN_MESSAGES
  51 extern BOOL    move_frozen_messages;   /* Get them out of the normal directory */
  52 #endif
  53
  54 /* These variables are outside the #ifdef because it keeps the code less
  55 cluttered in several places (e.g. during logging) if we can always refer to
  56 them. Also, the tls_ variables are now always visible. */
  57
  58 extern int     tls_active;             /* fd/socket when in a TLS session */
  59 extern BOOL    tls_certificate_verified; /* Client certificate verified */
  60 extern uschar *tls_cipher;             /* Cipher used */
  61 extern BOOL    tls_on_connect;         /* For older MTAs that don't STARTTLS */
  62 extern uschar *tls_on_connect_ports;   /* Ports always tls-on-connect */
  63 extern uschar *tls_peerdn;             /* DN from peer */
  64
  65 #ifdef SUPPORT_TLS
  66 extern const pcre *regex_STARTTLS;     /* For recognizing STARTTLS settings */
  67 extern uschar *tls_advertise_hosts;    /* host for which TLS is advertised */
  68 extern uschar *tls_certificate;        /* Certificate file */
  69 extern uschar *tls_crl;                /* CRL File */
  70 extern uschar *tls_dhparam;            /* DH param file */
  71 extern BOOL    tls_offered;            /* Server offered TLS */
  72 extern uschar *tls_privatekey;         /* Private key file */
  73 extern BOOL    tls_remember_esmtp;     /* For YAEB */
  74 extern uschar *tls_require_ciphers;    /* So some can be avoided */
  75 extern uschar *tls_try_verify_hosts;   /* Optional client verification */
  76 extern uschar *tls_verify_certificates;/* Path for certificates to check */
  77 extern uschar *tls_verify_hosts;       /* Mandatory client verification */
  78 #endif
  79
  80
  81 /* Input-reading functions for messages, so we can use special ones for
  82 incoming TCP/IP. */
  83
  84 extern int (*receive_getc)(void);
  85 extern int (*receive_ungetc)(int);
  86 extern int (*receive_feof)(void);
  87 extern int (*receive_ferror)(void);
  88
  89
  90 /* For clearing, saving, restoring address expansion variables. We have to have
  91 the size of this vector set explicitly, because it is referenced from more than
  92 one module. */
  93
  94 extern uschar **address_expansions[ADDRESS_EXPANSIONS_COUNT];
  95
  96 /* General global variables */
  97
  98 extern BOOL    accept_8bitmime;        /* Allow *BITMIME incoming */
  99 extern tree_node *acl_anchor;          /* Tree of named ACLs */
 100 extern uschar *acl_not_smtp;           /* ACL run for non-SMTP messages */
 101 extern uschar *acl_smtp_auth;          /* ACL run for AUTH */
 102 extern uschar *acl_smtp_connect;       /* ACL run on SMTP connection */
 103 extern uschar *acl_smtp_data;          /* ACL run after DATA received */
 104 extern uschar *acl_smtp_etrn;          /* ACL run for ETRN */
 105 extern uschar *acl_smtp_expn;          /* ACL run for EXPN */
 106 extern uschar *acl_smtp_helo;          /* ACL run for HELO/EHLO */
 107 extern uschar *acl_smtp_mail;          /* ACL run for MAIL */
 108 extern uschar *acl_smtp_mailauth;      /* ACL run for MAIL AUTH */
 109 extern uschar *acl_smtp_predata;       /* ACL run for DATA command */
 110 extern uschar *acl_smtp_quit;          /* ACL run for QUIT */
 111 extern uschar *acl_smtp_rcpt;          /* ACL run for RCPT */
 112 extern uschar *acl_smtp_starttls;      /* ACL run for STARTTLS */
 113 extern uschar *acl_smtp_vrfy;          /* ACL run for VRFY */
 114 extern BOOL    acl_temp_details;       /* TRUE to give details for 4xx error */
 115 extern uschar *acl_var[ACL_C_MAX+ACL_M_MAX]; /* User variables */
 116 extern uschar *acl_verify_message;     /* User message for verify failure */
 117 extern header_line *acl_warn_headers;  /* Warning headers added by ACL */
 118 extern string_item *acl_warn_logged;   /* Logged lines */
 119 extern int     acl_wherecodes[];       /* Response codes for ACL fails */
 120 extern uschar *acl_wherenames[];       /* Names for messages */
 121 extern address_item *addr_duplicate;   /* Duplicate address list */
 122 extern address_item address_defaults;  /* Default data for address item */
 123 extern uschar *address_file;           /* Name of file when delivering to one */
 124 extern uschar *address_pipe;           /* Pipe command when delivering to one */
 125 extern BOOL    address_test_mode;      /* True for -bt */
 126 extern tree_node *addresslist_anchor;  /* Tree of defined address lists */
 127 extern int     addresslist_count;      /* Number defined */
 128 extern gid_t  *admin_groups;           /* List of admin groups */
 129 extern BOOL    admin_user;             /* True if caller can do admin */
 130 extern BOOL    allow_domain_literals;  /* As it says */
 131 extern BOOL    allow_mx_to_ip;         /* Allow MX records to -> ip address */
 132 extern BOOL    allow_unqualified_recipient; /* As it says */
 133 extern BOOL    allow_unqualified_sender; /* Ditto */
 134 extern BOOL    allow_utf8_domains;     /* For experimenting */
 135 extern uschar *authenticated_id;       /* ID that was authenticated */
 136 extern uschar *authenticated_sender;   /* From AUTH on MAIL */
 137 extern BOOL    authentication_failed;  /* TRUE if AUTH was tried and failed */
 138 extern uschar *auth_advertise_hosts;   /* Only advertise to these */
 139 extern auth_info auths_available[];    /* Vector of available auth mechanisms */
 140 extern auth_instance *auths;           /* Chain of instantiated auths */
 141 extern auth_instance auth_defaults;    /* Default values */
 142 extern uschar *auth_defer_msg;         /* Error message for log */
 143 extern uschar *auth_defer_user_msg;    /* Error message for user */
 144 extern int     auto_thaw;              /* Auto-thaw interval */
 145
 146 extern BOOL    background_daemon;      /* Set FALSE to keep in foreground */
 147 extern uschar *base62_chars;           /* Table of base-62 characters */
 148 extern uschar *bi_command;             /* Command for -bi option */
 149 extern uschar *big_buffer;             /* Used for various temp things */
 150 extern int     big_buffer_size;        /* Current size (can expand) */
 151 extern int     body_linecount;         /* Line count in body */
 152 extern int     body_zerocount;         /* Binary zero count in body */
 153 extern uschar *bounce_message_file;    /* Template file */
 154 extern uschar *bounce_message_text;    /* One-liner */
 155 extern uschar *bounce_recipient;       /* When writing an errmsg */
 156 extern BOOL    bounce_return_body;     /* Include body in returned message */
 157 extern BOOL    bounce_return_message;  /* Include message in bounce */
 158 extern int     bounce_return_size_limit; /* Max amount to return */
 159 extern uschar *bounce_sender_authentication; /* AUTH address for bounces */
 160 extern int     bsmtp_transaction_linecount; /* Start of last transaction */
 161
 162 extern int     callout_cache_domain_positive_expire; /* Time for positive domain callout cache records to expire */
 163 extern int     callout_cache_domain_negative_expire; /* Time for negative domain callout cache records to expire */
 164 extern int     callout_cache_positive_expire; /* Time for positive callout cache records to expire */
 165 extern int     callout_cache_negative_expire; /* Time for negative callout cache records to expire */
 166 extern uschar *callout_random_local_part; /* Local part to be used to check if server called will accept any local part */
 167 extern uschar *check_dns_names_pattern;/* Regex for syntax check */
 168 extern int     check_log_inodes;       /* Minimum for message acceptance */
 169 extern int     check_log_space;        /* Minimum for message acceptance */
 170 extern int     check_spool_inodes;     /* Minimum for message acceptance */
 171 extern int     check_spool_space;      /* Minimum for message acceptance */
 172 extern int     clmacro_count;          /* Number of command line macros */
 173 extern uschar *clmacros[];             /* Copy of them, for re-exec */
 174 extern int     connection_max_messages;/* Max down one SMTP connection */
 175 extern BOOL    config_changed;         /* True if -C used */
 176 extern FILE   *config_file;            /* Configuration file */
 177 extern uschar *config_filename;        /* Configuration file name */
 178 extern int     config_lineno;          /* Line number */
 179 extern uschar *config_main_filelist;   /* List of possible config files */
 180 extern uschar *config_main_filename;   /* File name actually used */
 181 #ifdef CONFIGURE_OWNER
 182 extern uid_t   config_uid;             /* Additional owner */
 183 #endif
 184 extern uschar *continue_hostname;      /* Host for continued delivery */
 185 extern uschar *continue_host_address;  /* IP address for ditto */
 186 extern BOOL    continue_more;          /* Flag more addresses waiting */
 187 extern int     continue_sequence;      /* Sequence num for continued delivery */
 188 extern uschar *continue_transport;     /* Transport for continued delivery */
 189
 190 extern BOOL    daemon_listen;          /* True if listening required */
 191 extern uschar *daemon_smtp_port;       /* Can be a list of ports */
 192 extern int     debug_fd;               /* The fd for debug_file */
 193 extern FILE   *debug_file;             /* Where to write debugging info */
 194 extern bit_table debug_options[];      /* Table of debug options */
 195 extern int     debug_options_count;    /* Size of table */
 196 extern int     delay_warning[];        /* Times between warnings */
 197 extern uschar *delay_warning_condition; /* Condition string for warnings */
 198 extern BOOL    delivery_date_remove;   /* Remove delivery-date headers */
 199
 200 extern uschar *deliver_address_data;   /* Arbitrary data for an address */
 201 extern int     deliver_datafile;       /* FD for data part of message */
 202 extern uschar *deliver_domain;         /* The local domain for delivery */
 203 extern uschar *deliver_domain_data;    /* From domain lookup */
 204 extern uschar *deliver_domain_orig;    /* The original local domain for delivery */
 205 extern uschar *deliver_domain_parent;  /* The parent domain for delivery */
 206 extern BOOL    deliver_drop_privilege; /* TRUE for unprivileged delivery */
 207 extern BOOL    deliver_firsttime;      /* True for first delivery attempt */
 208 extern BOOL    deliver_force;          /* TRUE if delivery was forced */
 209 extern BOOL    deliver_freeze;         /* TRUE if delivery is frozen */
 210 extern int     deliver_frozen_at;      /* Time of freezing */
 211 extern uschar *deliver_home;           /* Home directory for pipes */
 212 extern uschar *deliver_host;           /* (First) host for routed local deliveries */
 213                                        /* Remote host for filter */
 214 extern uschar *deliver_host_address;   /* Address for remote delivery filter */
 215 extern uschar *deliver_in_buffer;      /* Buffer for copying file */
 216 extern ino_t   deliver_inode;          /* Inode for appendfile */
 217 extern uschar *deliver_localpart;      /* The local part for delivery */
 218 extern uschar *deliver_localpart_data; /* From local part lookup */
 219 extern uschar *deliver_localpart_orig; /* The original local part for delivery */
 220 extern uschar *deliver_localpart_parent; /* The parent local part for delivery */
 221 extern uschar *deliver_localpart_prefix; /* The stripped prefix, if any */
 222 extern uschar *deliver_localpart_suffix; /* The stripped suffix, if any */
 223 extern BOOL    deliver_force_thaw;     /* TRUE to force thaw in queue run */
 224 extern BOOL    deliver_manual_thaw;    /* TRUE if manually thawed */
 225 extern uschar *deliver_out_buffer;     /* Buffer for copying file */
 226 extern int     deliver_queue_load_max; /* Different value for queue running */
 227 extern address_item *deliver_recipients; /* Current set of addresses */
 228 extern uschar *deliver_selectstring;   /* For selecting by recipient */
 229 extern BOOL    deliver_selectstring_regex; /* String is regex */
 230 extern uschar *deliver_selectstring_sender; /* For selecting by sender */
 231 extern BOOL    deliver_selectstring_sender_regex; /* String is regex */
 232 extern BOOL    disable_logging;        /* Disables log writing when TRUE */
 233
 234 extern uschar *dns_again_means_nonexist; /* Domains that are badly set up */
 235 extern uschar *dns_ipv4_lookup;        /* For these domains, don't look for AAAA (or A6) */
 236 extern int     dns_retrans;            /* Retransmission time setting */
 237 extern int     dns_retry;              /* Number of retries */
 238 extern uschar *dnslist_domain;         /* DNS (black) list domain */
 239 extern uschar *dnslist_text;           /* DNS (black) list text message */
 240 extern uschar *dnslist_value;          /* DNS (black) list IP address */
 241 extern tree_node *domainlist_anchor;   /* Tree of defined domain lists */
 242 extern int     domainlist_count;       /* Number defined */
 243 extern BOOL    dont_deliver;           /* TRUE for -N option */
 244 extern BOOL    dot_ends;               /* TRUE if "." ends non-SMTP input */
 245
 246 /* This option is now a no-opt, retained for compatibility */
 247 extern BOOL    drop_cr;                /* For broken local MUAs */
 248
 249 extern BOOL    enable_dollar_recipients; /* Make $recipients available */
 250 extern int     envelope_to_remove;     /* Remove envelope_to_headers */
 251 extern int     errno_quota;            /* Quota errno in this OS */
 252 extern int     error_handling;         /* Error handling style */
 253 extern uschar *errors_copy;            /* For taking copies of errors */
 254 extern uschar *errors_reply_to;        /* Reply-to for error messages */
 255 extern int     errors_sender_rc;       /* Return after message to sender*/
 256 extern gid_t   exim_gid;               /* To be used with exim_uid */
 257 extern BOOL    exim_gid_set;           /* TRUE if exim_gid set */
 258 extern uschar *exim_path;              /* Path to exec exim */
 259 extern uid_t   exim_uid;               /* Non-root uid for exim */
 260 extern BOOL    exim_uid_set;           /* TRUE if exim_uid set */
 261 extern int     expand_forbid;          /* RDO flags for forbidding things */
 262 extern int     expand_nlength[];       /* Lengths of numbered strings */
 263 extern int     expand_nmax;            /* Max numerical value */
 264 extern uschar *expand_nstring[];       /* Numbered strings */
 265 extern BOOL    expand_string_forcedfail; /* TRUE if failure was "expected" */
 266 extern BOOL    extract_addresses_remove_arguments; /* Controls -t behaviour */
 267 extern uschar *extra_local_interfaces; /* Local, non-listen interfaces */
 268
 269 extern int     filter_n[FILTER_VARIABLE_COUNT]; /* filter variables */
 270 extern BOOL    filter_running;         /* TRUE while running a filter */
 271 extern int     filter_sn[FILTER_VARIABLE_COUNT]; /* variables set by system filter */
 272 extern uschar *filter_test;            /* Run as a filter tester on this file */
 273 extern uschar *filter_thisaddress;     /* For address looping */
 274 extern int     finduser_retries;       /* Retry count for getpwnam() */
 275 extern uid_t   fixed_never_users[];    /* Can't be overridden */
 276 extern uschar *freeze_tell;            /* Message on (some) freezings */
 277 extern uschar *fudged_queue_times;     /* For use in test harness */
 278
 279 extern uschar *gecos_name;             /* To be expanded when pattern matches */
 280 extern uschar *gecos_pattern;          /* Pattern to match */
 281 extern rewrite_rule *global_rewrite_rules;  /* Chain of rewriting rules */
 282
 283 extern int     header_insert_maxlen;   /* Max for inserting headers */
 284 extern int     header_maxsize;         /* Max total length for header */
 285 extern int     header_line_maxsize;    /* Max for an individual line */
 286 extern header_name header_names[];     /* Table of header names */
 287 extern int     header_names_size;      /* Number of entries */
 288 extern BOOL    header_rewritten;       /* TRUE if header changed by router */
 289 extern uschar *helo_accept_junk_hosts; /* Allowed to use junk arg */
 290 extern uschar *helo_allow_chars;       /* Rogue chars to allow in HELO/EHLO */
 291 extern uschar *helo_lookup_domains;    /* If these given, lookup host name */
 292 extern uschar *helo_try_verify_hosts;  /* Soft check HELO argument for these */
 293 extern BOOL    helo_verified;          /* True if HELO verified */
 294 extern uschar *helo_verify_hosts;      /* Hard check HELO argument for these */
 295 extern uschar *hex_digits;             /* Used in several places */
 296 extern uschar *hold_domains;           /* Hold up deliveries to these */
 297 extern BOOL    host_find_failed_syntax;/* DNS syntax check failure */
 298 extern BOOL    host_checking_callout;  /* TRUE if real callout wanted */
 299 extern uschar *host_data;              /* Obtained from lookup in ACL */
 300 extern uschar *host_lookup;            /* For which IP addresses are always looked up */
 301 extern BOOL    host_lookup_failed;     /* TRUE if lookup failed */
 302 extern uschar *host_lookup_order;      /* Order of host lookup types */
 303 extern uschar *host_lookup_msg;        /* Text for why it failed */
 304 extern int     host_number;            /* For sharing spools */
 305 extern uschar *host_number_string;     /* For expanding */
 306 extern uschar *host_reject_connection; /* Reject these hosts */
 307 extern tree_node *hostlist_anchor;     /* Tree of defined host lists */
 308 extern int     hostlist_count;         /* Number defined */
 309 extern uschar *hosts_connection_nolog; /* Limits the logging option */
 310 extern uschar *hosts_treat_as_local;   /* For routing */
 311
 312 extern int     ignore_bounce_errors_after; /* Keep them for this time. */
 313 extern BOOL    ignore_fromline_local;  /* Local SMTP ignore fromline */
 314 extern uschar *ignore_fromline_hosts;  /* Hosts permitted to send "From " */
 315 extern BOOL    is_inetd;               /* True for inetd calls */
 316
 317 extern int     journal_fd;             /* Fd for journal file */
 318
 319 extern int     keep_malformed;         /* Time to keep malformed messages */
 320
 321 extern uschar *eldap_dn;               /* Where LDAP DNs are left */
 322 extern int     load_average;           /* Most recently read load average */
 323 extern BOOL    local_error_message;    /* True if handling one of these */
 324 extern BOOL    local_from_check;       /* For adding Sender: */
 325 extern uschar *local_from_prefix;      /* Permitted prefixes */
 326 extern uschar *local_from_suffix;      /* Permitted suffixes */
 327 extern uschar *local_interfaces;       /* For forcing specific interfaces */
 328 extern uschar *local_scan_data;        /* Text returned by local_scan() */
 329 extern optionlist local_scan_options[];/* Option list for local_scan() */
 330 extern int     local_scan_options_count; /* Size of the list */
 331 extern int     local_scan_timeout;     /* Timeout for local_scan() */
 332 extern BOOL    local_sender_retain;    /* Retain Sender: (with no From: check) */
 333 extern gid_t   local_user_gid;         /* As it says; may be set in routers */
 334 extern uid_t   local_user_uid;         /* As it says; may be set in routers */
 335 extern tree_node *localpartlist_anchor;/* Tree of defined localpart lists */
 336 extern int     localpartlist_count;    /* Number defined */
 337 extern uschar *log_buffer;             /* For constructing log entries */
 338 extern unsigned int log_extra_selector;/* Bit map of logging options other than used by log_write() */
 339 extern uschar *log_file_path;          /* If unset, use default */
 340 extern bit_table log_options[];        /* Table of options */
 341 extern int     log_options_count;      /* Size of table */
 342 extern unsigned int log_write_selector;/* Bit map of logging options for log_write() */
 343 extern uschar *log_selector_string;    /* As supplied in the config */
 344 extern FILE   *log_stderr;             /* Copy of stderr for log use, or NULL */
 345 extern BOOL    log_testing_mode;       /* TRUE in various testing modes */
 346 extern BOOL    log_timezone;           /* TRUE to include the timezone in log lines */
 347 extern uschar *login_sender_address;   /* The actual sender address */
 348 extern lookup_info lookup_list[];      /* Vector of available lookups */
 349 extern int     lookup_list_count;      /* Number of entries in the list */
 350 extern int     lookup_open_max;        /* Max lookup files to cache */
 351 extern uschar *lookup_value;           /* Value looked up from file */
 352
 353 extern macro_item *macros;             /* Configuration macros */
 354 extern uschar *mailstore_basename;     /* For mailstore deliveries */
 355 extern int     max_username_length;    /* For systems with broken getpwnam() */
 356 extern int     message_age;            /* In seconds */
 357 extern uschar *message_body;           /* Start of message body for filter */
 358 extern uschar *message_body_end;       /* End of message body for filter */
 359 extern int     message_body_size;      /* Sic */
 360 extern int     message_body_visible;   /* Amount visible in message_body */
 361 extern int     message_ended;          /* State of message reading and how ended */
 362 extern uschar *message_headers;        /* When built */
 363 extern uschar  message_id_option[];    /* -E<message-id> for use as option */
 364 extern uschar *message_id_external;    /* External form of following */
 365 extern uschar *message_id_domain;      /* Expanded to form domain-part of message_id */
 366 extern uschar *message_id_text;        /* Expanded to form message_id */
 367 extern struct timeval message_id_tv;   /* Time used to create last message_id */
 368 extern int     message_linecount;      /* As it says */
 369 extern BOOL    message_logs;           /* TRUE to write message logs */
 370 extern int     message_size;           /* Size of message */
 371 extern uschar *message_size_limit;     /* As it says */
 372 extern uschar  message_subdir[];       /* Subdirectory for messages */
 373 extern uschar *message_reference;      /* Reference for error messages */
 374 extern BOOL    mua_wrapper;            /* TRUE when Exim is wrapping an MUA */
 375
 376 extern uid_t  *never_users;            /* List of uids never to be used */
 377 extern BOOL    no_multiline_responses; /* For broken clients */
 378
 379 extern optionlist optionlist_auths[];      /* These option lists are made */
 380 extern int     optionlist_auths_size;      /* global so that readconf can */
 381 extern optionlist optionlist_routers[];    /* see them for printing out   */
 382 extern int     optionlist_routers_size;    /* the options.                */
 383 extern optionlist optionlist_transports[];
 384 extern int     optionlist_transports_size;
 385
 386 extern uid_t   original_euid;          /* Original effective uid */
 387 extern gid_t   originator_gid;         /* Gid of whoever wrote spool file */
 388 extern uschar *originator_login;       /* Login of same */
 389 extern uschar *originator_name;        /* Full name of same */
 390 extern uid_t   originator_uid;         /* Uid of ditto */
 391 extern uschar *override_local_interfaces; /* Value of -oX argument */
 392 extern uschar *override_pid_file_path; /* Value of -oP argument */
 393
 394 extern BOOL    parse_allow_group;      /* Allow group syntax */
 395 extern BOOL    parse_found_group;      /* In the middle of a group */
 396 extern uschar *percent_hack_domains;   /* Local domains for which '% operates */
 397 extern uschar *pid_file_path;          /* For writing daemon pids */
 398 extern uschar *pipelining_advertise_hosts; /* As it says */
 399 extern BOOL    preserve_message_logs;  /* Save msglog files */
 400 extern uschar *primary_hostname;       /* Primary name of this computer */
 401 extern BOOL    print_topbitchars;      /* Topbit chars are printing chars */
 402 extern uschar  process_info[];         /* For SIGUSR1 output */
 403 extern uschar *process_log_path;       /* Alternate path */
 404 extern BOOL    prod_requires_admin;    /* TRUE if prodding requires admin */
 405
 406 extern uschar *qualify_domain_recipient; /* Domain to qualify recipients with */
 407 extern uschar *qualify_domain_sender;  /* Domain to qualify senders with */
 408 extern BOOL    queue_2stage;           /* Run queue in 2-stage manner */
 409 extern uschar *queue_domains;          /* Queue these domains */
 410 extern BOOL    queue_list_requires_admin; /* TRUE if -bp requires admin */
 411 extern BOOL    queue_run_first_delivery; /* If TRUE, first deliveries only */
 412 extern BOOL    queue_run_force;        /* TRUE to force during queue run */
 413 extern BOOL    queue_run_local;        /* Local deliveries only in queue run */
 414 extern BOOL    queue_running;          /* TRUE for queue running process and */
 415                                        /*   immediate children */
 416 extern pid_t   queue_run_pid;          /* PID of the queue running process or 0 */
 417 extern int     queue_run_pipe;         /* Pipe for synchronizing */
 418 extern int     queue_interval;         /* Queue running interval */
 419 extern BOOL    queue_only;             /* TRUE to disable immediate delivery */
 420 extern int     queue_only_load;        /* Max load before auto-queue */
 421 extern uschar *queue_only_file;        /* Queue if file exists/not-exists */
 422 extern BOOL    queue_only_override;    /* Allow override from command line */
 423 extern BOOL    queue_only_policy;      /* ACL or local_scan wants queue_only */
 424 extern BOOL    queue_run_in_order;     /* As opposed to random */
 425 extern int     queue_run_max;          /* Max queue runners */
 426 extern BOOL    queue_smtp;             /* Disable all immediate STMP (-odqs)*/
 427 extern uschar *queue_smtp_domains;     /* Ditto, for these domains */
 428
 429 extern unsigned int random_seed;       /* Seed for random numbers */
 430 extern uschar *raw_active_hostname;    /* Pre-expansion */
 431 extern uschar *raw_sender;             /* Before rewriting */
 432 extern uschar **raw_recipients;        /* Before rewriting */
 433 extern int     raw_recipients_count;
 434 extern int     rcpt_count;             /* Count of RCPT commands in a message */
 435 extern int     rcpt_fail_count;        /* Those that got 5xx */
 436 extern int     rcpt_defer_count;       /* Those that got 4xx */
 437 extern gid_t   real_gid;               /* Real gid */
 438 extern uid_t   real_uid;               /* Real user running program */
 439 extern BOOL    really_exim;            /* FALSE in utilities */
 440 extern BOOL    receive_call_bombout;   /* Flag for crashing log */
 441 extern int     receive_linecount;      /* Mainly for BSMTP errors */
 442 extern int     receive_messagecount;   /* Mainly for BSMTP errors */
 443 extern int     receive_timeout;        /* For non-SMTP acceptance */
 444 extern int     received_count;         /* Count of Received: headers */
 445 extern uschar *received_for;           /* For "for" field */
 446 extern uschar *received_header_text;   /* Definition of Received: header */
 447 extern int     received_headers_max;   /* Max count of Received: headers */
 448 extern int     received_time;          /* Time the message was received */
 449 extern uschar *recipient_data;         /* lookup data for recipients */
 450 extern uschar *recipient_unqualified_hosts; /* Permitted unqualified recipients */
 451 extern BOOL    recipients_discarded;   /* By an ACL */
 452 extern int     recipients_list_max;    /* Maximum number fitting in list */
 453 extern int     recipients_max;         /* Max permitted */
 454 extern int     recipients_max_reject;  /* If TRUE, reject whole message */
 455 extern const pcre *regex_AUTH;         /* For recognizing AUTH settings */
 456 extern const pcre  *regex_check_dns_names; /* For DNS name checking */
 457 extern const pcre  *regex_From;        /* For recognizing "From_" lines */
 458 extern const pcre  *regex_PIPELINING;  /* For recognizing PIPELINING */
 459 extern const pcre  *regex_SIZE;        /* For recognizing SIZE settings */
 460 extern const pcre  *regex_ismsgid;     /* Compiled r.e. for message it */
 461 extern int     remote_delivery_count;  /* Number of remote addresses */
 462 extern int     remote_max_parallel;    /* Maximum parallel delivery */
 463 extern uschar *remote_sort_domains;    /* Remote domain sorting order */
 464 extern retry_config *retries;          /* Chain of retry config information */
 465 extern int     retry_data_expire;      /* When to expire retry data */
 466 extern int     retry_interval_max;     /* Absolute maximum */
 467 extern int     retry_maximum_timeout;  /* The maximum timeout */
 468 extern uschar *return_path;            /* Return path for a message */
 469 extern BOOL    return_path_remove;     /* Remove return-path headers */
 470 extern int     rewrite_existflags;     /* Indicate which headers have rewrites */
 471 extern uschar *rfc1413_hosts;          /* RFC hosts */
 472 extern int     rfc1413_query_timeout;  /* Timeout on RFC 1413 calls */
 473 /* extern BOOL    rfc821_domains;  */       /* If set, syntax is 821, not 822 => being abolished */
 474 extern uid_t   root_uid;               /* The uid for root */
 475 extern router_info routers_available[];/* Vector of available routers */
 476 extern router_instance *routers;       /* Chain of instantiated routers */
 477 extern router_instance router_defaults;/* Default values */
 478 extern BOOL    running_in_test_harness; /*TRUE when running_status is patched */
 479 extern ip_address_item *running_interfaces; /* Host's running interfaces */
 480 extern uschar *running_status;         /* Flag string for testing */
 481 extern int     runrc;                  /* rc from ${run} */
 482
 483 extern uschar *search_error_message;   /* Details of lookup problem */
 484 extern BOOL    search_find_defer;      /* Set TRUE if lookup deferred */
 485 extern uschar *self_hostname;          /* Self host after routing->directors */
 486 extern unsigned int sender_address_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender */
 487 extern BOOL    sender_address_forced;  /* Set by -f */
 488 extern uschar *sender_address_unrewritten; /* Set if rewritten by verify */
 489 extern uschar *sender_data;            /* lookup result for senders */
 490 extern unsigned int sender_domain_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for sender domain */
 491 extern uschar *sender_fullhost;        /* Sender host name + address */
 492 extern uschar *sender_helo_name;       /* Host name from HELO/EHLO */
 493 extern uschar **sender_host_aliases;   /* Points to list of alias names */
 494 extern unsigned int sender_host_cache[(MAX_NAMED_LIST * 2)/32]; /* Cache bits for incoming host */
 495 extern BOOL    sender_host_notsocket;  /* Set for -bs and -bS */
 496 extern BOOL    sender_host_unknown;    /* TRUE for -bs and -bS except inetd */
 497 extern uschar *sender_ident;           /* Sender identity via RFC 1413 */
 498 extern BOOL    sender_local;           /* TRUE for local senders */
 499 extern uschar *sender_rcvhost;         /* Host data for Received: */
 500 extern BOOL    sender_set_untrusted;   /* Sender set by untrusted caller */
 501 extern uschar *sender_unqualified_hosts; /* Permitted unqualified senders */
 502 extern address_item *sender_verified_list; /* Saved chain of sender verifies */
 503 extern address_item *sender_verified_failed; /* The one that caused denial */
 504 extern volatile BOOL sigalrm_seen;     /* Flag for sigalrm_handler */
 505 extern uschar **sighup_argv;           /* Args for re-execing after SIGHUP */
 506 extern int     smtp_accept_count;      /* Count of connections */
 507 extern BOOL    smtp_accept_keepalive;  /* Set keepalive on incoming */
 508 extern int     smtp_accept_max;        /* Max SMTP connections */
 509 extern int     smtp_accept_max_nonmail;/* Max non-mail commands in one con */
 510 extern uschar *smtp_accept_max_nonmail_hosts; /* Limit non-mail cmds from these hosts */
 511 extern int     smtp_accept_max_per_connection; /* Max msgs per connection */
 512 extern uschar *smtp_accept_max_per_host; /* Max SMTP cons from one IP addr */
 513 extern int     smtp_accept_queue;      /* Queue after so many connections */
 514 extern int     smtp_accept_queue_per_connection; /* Queue after so many msgs */
 515 extern int     smtp_accept_reserve;    /* Reserve these SMTP connections */
 516 extern uschar *smtp_active_hostname;   /* Hostname for this message */
 517 extern BOOL    smtp_authenticated;     /* Sending client has authenticated */
 518 extern uschar *smtp_banner;            /* Banner string (to be expanded) */
 519 extern BOOL    smtp_check_spool_space; /* TRUE to check SMTP SIZE value */
 520 extern uschar *smtp_command_argument;  /* When running certain ACLs */
 521 extern int     smtp_connect_backlog;   /* Max backlog permitted */
 522 extern double  smtp_delay_mail;        /* Current MAIL delay */
 523 extern double  smtp_delay_rcpt;        /* Current RCPT delay */
 524 extern BOOL    smtp_enforce_sync;      /* Enforce sync rules */
 525 extern uschar *smtp_etrn_command;      /* Command to run */
 526 extern BOOL    smtp_etrn_serialize;    /* Only one at once */
 527 extern FILE   *smtp_in;                /* Incoming SMTP input file */
 528 extern int     smtp_load_reserve;      /* Only from reserved if load > this */
 529 extern int     smtp_mailcmd_count;     /* Count of MAIL commands */
 530 extern int     smtp_max_synprot_errors;/* Max syntax/protocol errors */
 531 extern int     smtp_max_unknown_commands; /* As it says */
 532 extern FILE   *smtp_out;               /* Incoming SMTP output file */
 533 extern uschar *smtp_ratelimit_hosts;   /* Rate limit these hosts */
 534 extern uschar *smtp_ratelimit_mail;    /* Parameters for MAIL limiting */
 535 extern uschar *smtp_ratelimit_rcpt;    /* Parameters for RCPT limiting */
 536 extern uschar *smtp_read_error;        /* Message for SMTP input error */
 537 extern int     smtp_receive_timeout;   /* Applies to each received line */
 538 extern uschar *smtp_reserve_hosts;     /* Hosts for reserved slots */
 539 extern BOOL    smtp_return_error_details; /* TRUE to return full info */
 540 extern int     smtp_rlm_base;          /* Base interval for MAIL rate limit */
 541 extern double  smtp_rlm_factor;        /* Factor for MAIL rate limit */
 542 extern int     smtp_rlm_limit;         /* Max delay */
 543 extern int     smtp_rlm_threshold;     /* Threshold for RCPT rate limit */
 544 extern int     smtp_rlr_base;          /* Base interval for RCPT rate limit */
 545 extern double  smtp_rlr_factor;        /* Factor for RCPT rate limit */
 546 extern int     smtp_rlr_limit;         /* Max delay */
 547 extern int     smtp_rlr_threshold;     /* Threshold for RCPT rate limit */
 548 extern BOOL    smtp_use_pipelining;    /* Global for passed connections */
 549 extern BOOL    smtp_use_size;          /* Global for passed connections */
 550 extern BOOL    split_spool_directory;  /* TRUE to use multiple subdirs */
 551 extern uschar *spool_directory;        /* Name of spool directory */
 552 extern int     string_datestamp_offset;/* After insertion by string_format */
 553 extern BOOL    strip_excess_angle_brackets; /* Surrounding route-addrs */
 554 extern BOOL    strip_trailing_dot;     /* Remove dots at ends of domains */
 555 extern uschar *submission_domain;      /* Domain for submission mode */
 556 extern BOOL    submission_mode;        /* Can be forced from ACL */
 557 extern BOOL    synchronous_delivery;   /* TRUE if -odi is set */
 558 extern BOOL    syslog_duplication;     /* FALSE => no duplicate logging */
 559 extern int     syslog_facility;        /* As defined by Syslog.h */
 560 extern uschar *syslog_processname;     /* 'ident' param to openlog() */
 561 extern BOOL    syslog_timestamp;       /* TRUE if time on syslogs */
 562 extern uschar *system_filter;          /* Name of system filter file */
 563
 564 extern uschar *system_filter_directory_transport;  /* Transports for the */
 565 extern uschar *system_filter_file_transport;       /* system filter */
 566 extern uschar *system_filter_pipe_transport;
 567 extern uschar *system_filter_reply_transport;
 568
 569 extern gid_t   system_filter_gid;      /* Gid for running system filter */
 570 extern BOOL    system_filter_gid_set;  /* TRUE if gid set */
 571 extern uid_t   system_filter_uid;      /* Uid for running system filter */
 572 extern BOOL    system_filter_uid_set;  /* TRUE if uid set */
 573 extern BOOL    system_filtering;       /* TRUE when running system filter */
 574
 575 extern BOOL    tcp_nodelay;            /* Controls TCP_NODELAY on daemon */
 576 extern int     thismessage_size_limit; /* Limit for this message */
 577 extern int     timeout_frozen_after;   /* Max time to keep frozen messages */
 578 extern BOOL    timestamps_utc;         /* Use UTC for all times */
 579 extern int     transport_count;        /* Count of bytes transported */
 580 extern uschar **transport_filter_argv; /* For on-the-fly filtering */
 581 extern int     transport_filter_timeout; /* Timeout for same */
 582
 583 extern transport_info transports_available[]; /* Vector of available transports */
 584 extern transport_instance *transports; /* Chain of instantiated transports */
 585 extern transport_instance transport_defaults; /* Default values */
 586
 587 extern int     transport_write_timeout;/* Set to time out individual writes */
 588
 589 extern tree_node *tree_dns_fails;      /* Tree of DNS lookup failures */
 590 extern tree_node *tree_duplicates;     /* Tree of duplicate addresses */
 591 extern tree_node *tree_nonrecipients;  /* Tree of nonrecipient addresses */
 592 extern tree_node *tree_unusable;       /* Tree of unusable addresses */
 593
 594 extern BOOL    trusted_caller;         /* Caller is trusted */
 595 extern gid_t  *trusted_groups;         /* List of trusted groups */
 596 extern uid_t  *trusted_users;          /* List of trusted users */
 597 extern uschar *timezone_string;        /* Required timezone setting */
 598
 599 extern uschar *unknown_login;          /* To use when login id unknown */
 600 extern uschar *unknown_username;       /* Ditto */
 601 extern uschar *untrusted_set_sender;   /* Let untrusted users set these senders */
 602 extern uschar *uucp_from_pattern;      /* For recognizing "From " lines */
 603 extern uschar *uucp_from_sender;       /* For building the sender */
 604
 605 extern uschar *warn_message_file;      /* Template for warning messages */
 606 extern uschar *warnmsg_delay;          /* String form of delay time */
 607 extern uschar *warnmsg_recipients;     /* Recipients of warning message */
 608 extern BOOL    write_rejectlog;        /* Control of reject logging */
 609
 610 extern uschar *version_copyright;      /* Copyright notice */
 611 extern uschar *version_date;           /* Date of compilation */
 612 extern uschar *version_cnumber;        /* Compile number */
 613 extern uschar *version_string;         /* Version string */
 614
 615 extern int     warning_count;          /* Delay warnings sent for this msg */
 616
 617 /* End of globals.h */