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|
#!/bin/bash
[ ! -z "${DEBUG}" ] && set -x
USER=${1:-$( id -un )}
HOME="$( getent passwd $USER | cut -d ':' -f 6 )"
BASE="${HOME}"/Maildir
INOTIFY='/usr/bin/inotifywait'
INOTIFY_EVENTS='moved_to,moved_from'
INOTIFY_OPTIONS='--monitor --recursive --event'" ${INOTIFY_EVENTS}"
LOG=/var/log/junker/${USER}.log
SPAMC='/usr/bin/spamc'
JUNK="${BASE}/Junk"
NONJUNK="${BASE}/Junk"
TRASH="${BASE}/Trash"
SENT="${BASE}/Sent"
DRAFTS="${BASE}/Drafts"
if [[ -f "${HOME}/.junkerrc" && -r "${HOME}/.junkerrc" ]]
then
. "${HOME}/.junkerrc"
fi
function OpenLog {
exec 3>>"${LOG}"
exec 1>&3
exec 2>&3
Log "Log opened"
}
function CloseLog {
Log "Log closed"
exec 3>&-
}
function Log {
echo -e "$( date +'%Y%m%d %H:%M:%S' )\t$@"
}
function Cleanup {
CloseLog
exit 0
}
function Learn {
[[ "$1" != "ham" && "$1" != "spam" ]] && return 3
[[ ! -f "$2" || ! -r "$2" ]] && return 4
Log "Learning $2 as $1"
exec 9<"$2"
${SPAMC} --learntype $1 <&9
ret=$?
case $ret in
0) Log "Done"
;;
5) Log "Learned"
;;
6) Log "Already known"
;;
*) Log "Error occured, code $ret"
;;
esac
exec 9<&-
}
function Reload {
CloseLog
OpenLog
}
if [ ! -d "${BASE}" ]
then
echo "Error: Mail directory not found at ${BASE}, exiting" >&2
exit 1
fi
if [ ! -d "$( dirname ${LOG} )" ]
then
echo "Error: Log directory not found at ${LOG}, exiting" >&2
exit 1
fi
if [ ! -x ${INOTIFY} ]
then
echo "Error: inotifywait not found, check path" >&2
exit 1
fi
if [ ! -x ${SPAMC} ]
then
echo "Error: spamc not found, check path" >&2
exit 1
fi
checkfile=$( mktemp )
${SPAMC} --learntype forget <$checkfile
if [ $? -eq 74 ]
then
echo "Error: spamd doesn't allow connections, needs --allow-tell" >&2
exit 1
fi
OpenLog
trap "Cleanup" EXIT SIGINT SIGTERM
trap "Reload" SIGHUP
while IFS=' ' read -r dir event file
do
if [[ "${dir}" != */cur/ && "${dir}" != */new/ ]]
then
continue
fi
case "${dir}" in
${TRASH}/*)
;&
${SENT}/*)
;&
${DRAFTS}/*)
continue
esac
if [[ "${event}" == *MOVED_TO* && "${dir}" == "${JUNK}"/cur/ ]]
then
Learn "spam" "${dir}/${file}"
elif [[ "${event}" == *MOVED_TO* && "${dir}" == "${JUNK}"/new/ ]]
then
Learn "spam" "${dir}/${file}"
elif [[ "${event}" == *MOVED_TO* && "${dir}" == "${NONJUNK}"/cur/ ]]
then
Learn "ham" "${dir}/${file}"
elif [[ "${event}" == *MOVED_FROM* && "${dir}" == "${JUNK}"/cur/ ]]
then
Learn "ham" "${dir}/${file}"
elif [[ "${event}" == *MOVED_TO* && "${dir}" == ${BASE}/*/new/ ]]
then
Learn "ham" "${dir}/${file}"
fi
done < <( ${INOTIFY} ${INOTIFY_OPTIONS} --format '%w %e %f' ${BASE} )
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