/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of California at Berkeley. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. * * @(#)configdefs.h 5.2 (Berkeley) 2/18/88 */ /* * This file contains the definitions of data structures used in * configuring the network behavior of Mail when replying. */ /* * The following constants are used when you are running 4.1a bsd or * later on a local network. Under control of the #define flag * GETHOST, the host name is determined dynamically using the * gethostname() system call. The name thus found is inserted * into the host table slot whose name was originally EMPTY. */ #define EMPTY "** empty **" #define EMPTYID 'E' /* * The following data structure is the host table. You must have * an entry here for your own machine, plus any special stuff you * expect the mailer to know about. If you have #define'd GETHOST * in v7.local.h, you needn't add your machine to the host table. * Not all hosts need be here, however: * Mail can dope out stuff about hosts on the fly by looking * at addresses. The machines needed here are: * 1) The local machine * 2) Any machines on the path to a network gateway * 3) Any machines with nicknames that you want to have considered * the same. * The machine id letters can be anything you like and are not seen * externally. Be sure not to use characters with the 0200 bit set -- * these have special meanings. */ struct netmach { char *nt_machine; char nt_mid; short nt_type; }; /* * Network type codes. Basically, there is one for each different * network, if the network can be discerned by the separator character, * such as @ for the arpa net. The purpose of these codes is to * coalesce cases where more than one character means the same thing, * such as % and @ for the arpanet. Also, the host table uses a * bit map of these codes to show what it is connected to. * BN -- connected to Bell Net. * AN -- connected to ARPA net, SN -- connected to Schmidt net. */ #define AN 1 /* Connected to ARPA net */ #define BN 2 /* Connected to BTL net */ #define SN 4 /* Connected to Schmidt net */ /* * Data structure for table mapping network characters to network types. */ struct ntypetab { char nt_char; /* Actual character separator */ int nt_bcode; /* Type bit code */ }; /* * Codes for the "kind" of a network. IMPLICIT means that if there are * physically several machines on the path, one does not list them in the * address. The arpa net is like this. EXPLICIT means you list them, * as in UUCP. * By the way, this distinction means we lose if anyone actually uses the * arpa net subhost convention: name@subhost@arpahost */ #define IMPLICIT 1 #define EXPLICIT 2 /* * Table for mapping a network code to its type -- IMPLICIT routing or * IMPLICIT routing. */ struct nkindtab { int nk_type; /* Its bit code */ int nk_kind; /* Whether explicit or implicit */ }; /* * The following table gives the order of preference of the various * networks. Thus, if we have a choice of how to get somewhere, we * take the preferred route. */ struct netorder { short no_stat; char no_char; }; /* * External declarations for above defined tables. */ #ifndef CONFIGFILE extern struct netmach netmach[1]; extern struct ntypetab ntypetab[1]; extern struct nkindtab nkindtab[1]; extern struct netorder netorder[1]; extern char *metanet; #endif