#!/bin/bash
#Copyright 2002, William Stearns <wstearns@pobox.com>
#Released under the GPL

if [ -z "$HOME" ]; then
	HOME="/home/wstearns"
fi

#Kick out any messages waiting in the sendmail queue
nice /usr/sbin/sendmail -q >> $HOME/autofetchmail.log 2>&1 &

#I save any spams not caught by razor to the verified-spam folder.  This runs razor-report
#on that folder to send spam signatures to the razor database.  The next "if" says we'll do
#the report if I've saved spam to that folder since the last time I reported.
if [ $HOME/mail/verified-spam -nt $HOME/.razor/last-verified-report ]; then
	touch $HOME/.razor/last-verified-report
	echo Reporting verified-spam. >> $HOME/autofetchmail.log 2>&1
	nice razor-report -M $HOME/mail/verified-spam >> $HOME/autofetchmail.log 2>&1
else
	echo Verified-spam all caught up, not reporting. >> $HOME/autofetchmail.log 2>&1
fi

#If there's a fetchmail already running, don't start another.
#At some point I should replace this with a lockfile stored in $HOME
if [ -n "`ps ax | grep 'fetchmail --all' | grep -v grep`" ]; then
	echo fetchmail already running, no new copy tripped. >> $HOME/autofetchmail.log 2>&1
else
	echo fetchmail not running, starting new run. >> $HOME/autofetchmail.log 2>&1

	if [ -f $HOME/agent ]; then
		. $HOME/agent
		export SSH_AUTH_SOCK SSH_AGENT_PID SSH_ASKPASS
	else
		echo SSH agent info not in ~/agent, please place there. >> $HOME/autofetchmail.log 2>&1
	fi

	#The next test is essentially "If we have a ppp connection or we have some default route (i.e., if we have an Internet connection)
	if [ -f /var/run/ppp0.pid ] || [ `/sbin/route -n | grep '^0\.0\.0\.0' | grep -v 'ppp[0-9]$' | grep -v 'sl[0-9]$' | grep -v 'tap[0-9]$' | wc -l` -gt 0 ]; then
		#The "--keep" leaves mail up on the mail server; good for testing.
		#/usr/bin/fetchmail --keep --limit 6000 >> $HOME/autofetchmail.log 2>&1

		#First, get all messages under 80K; messages 80K and above just get left on the mail server for the moment.
		#After every block of 10 messages, tell the mail server to
		#delete those.  If you set the expunge to a very low value, say 1-5, the mail server will have 
		#lots of pauses as it rewrites you mail spool.  If you set it too high, say, 200, you'll get lots
		#of duplicate messages if you disconnect and have to reconnect.
		#Set expunge low (10-30) if you stand a reasonably good chance of getting disconnected.  Set
		#high if your connection is stable.
		nice /usr/bin/fetchmail --all --expunge  10 --limit 80000 >> $HOME/autofetchmail.log 2>&1

		#Now we go back through and get all the messages, which may include some >80K.
		nice /usr/bin/fetchmail --all --expunge  10 >> $HOME/autofetchmail.log 2>&1
		touch ~/last_mail_check
	fi
fi