#!/bin/bash

MSGID=$1
[ -z "$MSGID" ] && echo "Usage : $0 [message-id]" && exit 1

DEBUG=0
[ "$2" == "-d" ] && DEBUG=1

MAX_LOG=9

function search_mailid () {
	MSGID=$1
	MAILLOG="$2"
	[ ! -f "$MAILLOG" ] && MAILLOG="$MAILLOG.gz"
	[ -f "$MAILLOG" ] && zgrep $MSGID $MAILLOG|head -n 1|sed 's/^.*\: \([^\:]*\): message-id.*$/\1/'
}

[ $DEBUG -eq 1 ] && echo "Search mail ID from message ID $MSGID ..."
res=$( search_mailid "$MSGID" /var/log/mail.log )
if [ -n "$res" ]
then
	echo "$res"
	exit 0
else
	[ $DEBUG -eq 1 ] && echo "Not found from log file /var/log/mail.log. Try with archive (Max : $MAX_LOG)"
	for i in $( seq 1 $MAX_LOG )
	do
		res=$( search_mailid "$MSGID" /var/log/mail.log.$i )
		if [ -n "$res" ]
		then
			[ $DEBUG -eq 1 ] && echo "Found from log file /var/log/mail.log.$i"
			echo "$res"
			exit 0
		else
			[ $DEBUG -eq 1 ] && echo "Not found from log file /var/log/mail.log.$i"
		fi
	done
	[ $DEBUG -eq 1 ] && echo "Not found in archive (Max : $MAX_LOG)"
fi
exit 1