Path: utzoo!attcan!uunet!mcsun!ukc!axion!vision!chris
From: chris@vision.UUCP (Chris Davies)
Newsgroups: comp.mail.elm
Subject: Re: filter(1) disables biff (was "bell on new mail")
Keywords: filter, biff, inetd, comsat, deliver
Message-ID: <1295@vision.UUCP>
Date: 22 Oct 90 14:10:04 GMT
References: <1990Oct15.175056.19427@dg-rtp.dg.com> <107204@convex.convex.com> <1990Oct16.160303.19442@DSI.COM>
Reply-To: chris@vision.UUCP (Chris Davies)
Organization: VisionWare Ltd., Leeds, UK
Lines: 78

In article <1990Oct16.160303.19442@DSI.COM> piziali@convex.com (Andy Piziali)
writes:
> Syd, is there an easy fix to filter(1) we could install?

And Syd replies:
> Nope.  Nor would there be.


We use Chip's "deliver" program with a system-wide script which notifies users
of new mail (provided the x bit is set on the tty - as per biff).  While I'm
not going to post the sources to deliver (available at many archive servers,
I presume), I will post our deliver.sys script...

I don't see why you couldn't use this in cojunction with filter(1) to do the
required munging etc.

Just a quick note, there is a line with grep "^$USER[ 	]"; the whitespace is
one space and one tab.  Don't miss this!

Chris

--cut--here--
: '/bin/sh'
# Mail delivery shell script for local mail.
#
# This is executed as root at delivery-time (see deliver(8L) for details)

ARGS=$@

NULL=/dev/null
DATE=`date '+%d-%h-%y (%T)'`
WHOFIL=/tmp/delwho.$$
LOGFIL=/usr/local/lib/deliver/deliver.log

trap 'S=$?; rm -f $WHOFIL; exit $S' 1 2 15

for USER in $ARGS
do
    #
    # Notify the recipient (if they've got mailchecking enabled).
    #
    if who | grep "^$USER[ 	]" > $WHOFIL 2> $NULL
    then
	#
	# User is logged on
	#
	FROM=`grep '^From:' "$HEADER" | cut -c7-` 2> $NULL
	if [ -z "$FROM" ]
	then
	    FROM="someone"
	fi

	while read D1 TTY D2
	do
	    TTYDEV="/dev/$TTY"
# Can't use test(1) since we're root, and we've got all r/w/x permissions!
	    if [ "`/bin/ls -l $TTYDEV | cut -c3-4`" = "wx" ]
	    then
		echo "\r\nYou have new mail on $HOSTNAME from $FROM\07\r\n" > $TTYDEV 2> $NULL
	    fi
	done < $WHOFIL
    fi

    #
    # This ensures "deliver" actually delivers the mail.  If you remove
    # this line, no mail will be delivered!
    #
    echo "$USER"
done

rm -f $WHOFIL
exit 0
--and--here--
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