#!/bin/sh
#
# /usr/local/sbin/localshowmaildelivered
# Copyright 2007 Jonas Smedegaard <dr@jones.dk>
#
# $Id: localshowmaildelivered,v 1.6 2007-10-04 00:38:03 jonas Exp $
#
# List recently delivered emails
#

input="${input:-user}"
output="${output:-shortline}"
logfilecount="${logfilecount:-1}"
pattern="${pattern:-user_dovecot}"

mailname="$(cat /etc/mailname | head -n 1)"

sed_longline='s/^\(.\{15\}\) [^:]*: /\1 /'
sed_time='s/^\(.\{15\}\) .*$/\1 /'

case $pattern in
    user_dovecot)
	# Dovecot "deliver"
	egrep_before='deliver\(('
	egrep_after=')\).*saved mail to '
	sed_shortline='s/^\(.\{15\}\) [^)]*): msgid=/\1 (/;s/: saved mail to/)/;s/ INBOX$//'
	sed_msgid='s/^[^)]*): msgid=//;s/: .*$//'
	;;
    user_procmail)
	# Postfix/local via procmail
	egrep_before=' postfix/local.*: to=<'
	egrep_after='@'"$mailname"'>, .*status=sent \(delivered to command: procmail'
	sed_shortline='s/^\(.\{15\}\) [^:]*: /\1 (/;s/: .*$/)/'
	sed_qid='s/^[^:]*: //;s/: .*$//'
	;;
    qid_postfix)
	egrep_before='[^[:xdigit:]]'
	egrep_after='[^[:xdigit:]]'
	sed_shortline="$sed_longline"
	sed_qid='s/^[^:]*: //;s/: .*$//'
	;;
    *)
	echo >&2 "ERROR: unknwon pattern \"$pattern\""
	exit 1
	;;
esac

case $output in
    shortline)
	sedstring="$sed_shortline"
	;;
    longline)
	sedstring="$sed_longline"
	;;
    msgid)
	sedstring="$sed_msgid"
	;;
    qid)
	sedstring="$sed_qid"
	;;
    *)
	echo >&2 "ERROR: unknwon output \"$output\""
	exit 1
	;;
esac

localuser="$1"

find /var/log -name 'mail.log*' | sort -nr -t. -k3 | tail -n "$logfilecount" | xargs zcat -f \
	| egrep -- "$egrep_before$localuser$egrep_after" \
	| sed "$sedstring"