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From: rgoguen@bbn-vax.arpa (Robert J Goguen)
Newsgroups: net.unix-wizards
Subject: A change to /etc/gettable 4.2bsd
Message-ID: <356@brl-smoke.ARPA>
Date: Mon, 28-Apr-86 13:52:01 EDT
Article-I.D.: brl-smok.356
Posted: Mon Apr 28 13:52:01 1986
Date-Received: Fri, 2-May-86 22:45:53 EDT
Sender: news@brl-smoke.ARPA
Lines: 66


	Recently I recieved several complaints from the adminstrator at the NIC
in regards to too many ftp connections retreiving the host table . To help in 
cutting down the number of times I pulled over a "new" host table , I modified 
the sources to /etc/gettable to allow a command to be sent to the "nicname" 
server. The following commands are allowed. 

	1.) all - this is the default and it gets the entire host table

	2.) version - gets the sequential version number

	3.) "hname host" - gets the adddres of that particular host

	4.) "haddr address" - gets the hostname of that particular address

/etc/gettable is used the exact same way except a "-c" was added to over-ride
the default ALL command . 

	e.g
		/etc/gettable sri-nic -c version 
The above command would retreive the current version number from the hostname 
server at sri-nic and place it in host.txt. I could then use this current 
version number and compare it to my current version number and decide on whether
or not I retreive the host table .  Following is a diff on the sources . 


diff gettable.new.c gettable.old.c
-------------------------------------------------------------------------------
0a1
> 
13a15
> #define	QUERY		"version\r\n"	/* query to hostname server */
30d31
< 	char QUERY[80] ;
34d34
< 	strcpy(QUERY,"ALL\r\n");
36,37c36,37
< 	if (argc < 1 || argc > 4) {
< 		fprintf(stderr,"usage: gettable host [ file ] [-c command ]\n");
---
> 	if (argc < 1 || argc > 2) {
> 		fprintf(stderr, "usage: gettable host [ file ]\n");
45,61c45,46
< 	while ( argc > 0 )
< 	 { /* parse command line arguements */
< 	   if (( argv[0][0] == '-') && ( argv[0][1] == 'c' ))
< 		{
< 		 ++argv ; 
< 		 --argc ;
< 		 strcpy(QUERY,*argv);
< 		 strcat(QUERY,"\r\n");
< 		}
< 	   else
< 		if ( *host == NULL )
< 		 host = *argv ;
< 		else
< 		 outfile = *argv ;
< 	   ++argv ; 
< 	   --argc ;
< 	 }
---
> 	host = *argv;
> 	argv++, argc--;
67a53,54
> 	if (argc > 0)
> 		outfile = *argv;