Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site pertec.UUCP
Path: utzoo!utcs!lsuc!pesnta!pertec!bytebug
From: bytebug@pertec.UUCP (roger long)
Newsgroups: net.news,net.news.b
Subject: Extension to L (local) flag in sys file - corrected patch
Message-ID: <323@pertec.UUCP>
Date: Sun, 19-May-85 10:10:56 EDT
Article-I.D.: pertec.323
Posted: Sun May 19 10:10:56 1985
Date-Received: Sun, 19-May-85 19:19:33 EDT
Distribution: net
Organization: Pertec Computer Corp., Irvine, CA
Lines: 119
Xref: utcs net.news:2989 net.news.b:977

As has been previously discussed, the patch I originally posted had
a minor flaw, and it was suggested that I repost the entire patch 
for those people who had ignored it the first time.

What I've done is extend the meaning of the "L" flag in the sys
file.  Where before you could put an "L" to only forward news items
generated on the local system, you may now specify "Ln" to forward
news items generated within "n" hops of your machine.  Thus, "L1"
would forward news items generated on your machine, and all machines
that your machine talks to.  "L2" would forward news items generated
on your machine, all the machines your machine talks to, and all the
machines that these machines talk to.  The idea I had was go gather
news from one local area and be able to send it to a remote area
quickly, rather than have it trickle through the entire system as it
does now.  

The patch has been working on my machine for quite some time.  I've
been forwarding and receiving "L3" worth of articles to "pesnta", a
Northern California site for the past several months.  It results in
my getting the California local newsgroup articles from Northern 
California sooner than if I waited for them to trickle down the chain.
I, in turn, post these article to the rest of the machines I talk to,
thus starting the propagation of the articles here in the lower half
of the state.

The patch to do this follows in "diff -c" format:

*** ifuncs.c.bak	Thu Dec 27 20:27:45 1984
--- ifuncs.c	Sun May 19 06:50:25 1985
***************
*** 3,9
   */
  
  #ifndef lint
! static char	*SccsId = "@(#)ifuncs.c	2.35	9/12/84";
  #endif !lint
  
  #include "iparams.h"

--- 3,9 -----
   */
  
  #ifndef lint
! static char	*SccsId = "@(#)ifuncs.c	2.35.1	12/27/84";
  #endif !lint
  
  #include "iparams.h"
***************
*** 84,89
  
  /*
   * Transmit file to system.
   */
  #define PROC 0004
  transmit(sp, ifp, maynotify)

--- 84,91 -----
  
  /*
   * Transmit file to system.
+  * 27 Dec 84:	pertec!bytebug changed "local" to mean article originated
+  *		within 'n' hops of host.
   */
  #define PROC 0004
  transmit(sp, ifp, maynotify)
***************
*** 105,111
  /* F:	append name to file */
  	int appfile = (index(sp->s_flags, 'F') != NULL);
  /* L:	local: don't send the article unless it was generated locally */
! 	int local = (index(sp->s_flags, 'L') != NULL);
  /* N:	notify: don't send the article, just tell him we have it */
  	int notify = maynotify && (index(sp->s_flags, 'N') != NULL);
  /* S:	noshell: don't fork a shell to execute the xmit command */

--- 107,113 -----
  /* F:	append name to file */
  	int appfile = (index(sp->s_flags, 'F') != NULL);
  /* L:	local: don't send the article unless it was generated locally */
! 	int local = ((ptr = index(sp->s_flags, 'L')) != NULL);
  /* N:	notify: don't send the article, just tell him we have it */
  	int notify = maynotify && (index(sp->s_flags, 'N') != NULL);
  /* S:	noshell: don't fork a shell to execute the xmit command */
***************
*** 113,121
  /* U:	useexist: use the -c option to uux to use the existing copy */
  	int useexist = (index(sp->s_flags, 'U') != NULL);
  
! 	if (local && mode == PROC) {
! 		fclose(ifp);
! 		return FALSE;
  	}
  #ifdef DEBUG
  	printf("Transmitting to '%s'\n", sp->s_name);

--- 115,133 -----
  /* U:	useexist: use the -c option to uux to use the existing copy */
  	int useexist = (index(sp->s_flags, 'U') != NULL);
  
! 	if (local) {		/* allow local to mean within 'n' hops */
! 		++ptr;
! 		if (isdigit(*ptr))
! 			local = *ptr - '0';
! 		else
! 			local = 0;
! 		for (ptr = h.path; *ptr != '\0'; local--)
! 			while (*ptr++ != '\0')
! 				;
! 		if (local < 0) {
! 			fclose(ifp);
! 			return FALSE;
! 		}
  	}
  #ifdef DEBUG
  	printf("Transmitting to '%s'\n", sp->s_name);
-- 
	roger long
	pertec computer corp
	{ucbvax!unisoft | scgvaxd | trwrb | felix}!pertec!bytebug