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#!/bin/sh
#
# maildaemon, fetchmail driver intended to be invoked hourly by cron.
#
# Script by Larry Fahnoe <fahnoe@kegworks.mn.org>, who writes:
#
# This is intended to support a standalone system (NeXTSTEP in this case) 
# which makes manual, on-demand PPP connections to the outside world.  The
# script is run as the target user from cron on an hourly basis.  If it
# finds a PPP link is up (it sees routes on a PPP interface), fetchmail is
# invoked.  If the link is not up, and the hour is in the list of hours that
# connections should be made, the link is brought up and fetchmail is
# invoked.  The program or script used to bring up the link should return an
# exit status which reflects whether the link actually came up. 
# 
# I wrote this because I wanted to be able to have control over the amount
# of time spent connected to an ISP and yet still be able to poll for mail
# at intervals that made sense to me.  One limitation of this script is that
# it does not take into account that an existing PPP link might be going to
# a different ISP or network.
#

# You'll have to configure these
USER=fahnoe			# your name
HOME=/Users/fahnoe		# home directory (for the logfile)
FORCEHOURS="05 09 13 17"	# when to bring the link up if it's not already
SERVER=mailserver.isp.com	# mailserver host name

# Link initialization and wrapup scripts (you may have to configure these)
PPPUP="/usr/local/bin/pppup $SERVER"
PPPDOWN=/usr/local/bin/pppdown

PATH=/usr/local/bin:/bin:/usr/ucb:/usr/bin:/usr/etc
export PATH USER HOME

LOG=$HOME/log/maildaemon.log

# get the mail, depends on $HOME/.fetchmailrc and $USER
FETCHMAIL( ) {
    ( echo "`date` $SERVER"
      fetchmail $SERVER
      if [ $? -gt 1 ]
      then
          echo "`date` $SERVER (evil things happened in fetchmail)"
      fi
    ) >> $LOG 2>&1
}

# if the link is already up, check for mail.
# if the hour is in FORCEHOURS, force the link up and check for mail.
(netstat -rn | awk '{ print $6 }' | grep ppp[0-9] > /dev/null)
if [ $? -eq 0 ]
then
    FETCHMAIL
else
    hour=`date | sed -e 's/:/ /g' |