#!@l_prefix@/lib/openpkg/bash @l_prefix@/etc/rc
##
##  rc.uvscan -- Run-Commands
##

%config
    uvscan_enable="$openpkg_rc_def"
    uvscan_dat="ftp://ftp.nai.com/pub/antivirus/datfiles/4.x/"
    uvscan_update="daily"

%common
    uvscan_update () {
        #   determine information
        i=0
        while [ $i -lt 3 ]; do
            uvscan_datfile=`@l_prefix@/bin/curl -s "${uvscan_dat}" 2>/dev/null |\
                            grep 'dat-[0-9][0-9]*\.tar' | sort | tail -1 |\
                            sed -e 's;^.*\(dat-[0-9][0-9]*\.tar\).*$;\1;'`
            if [ ".${uvscan_datfile}" != . ]; then
                break
            else
                sleep 10
            fi
            i=$(($i + 1))
        done
        if [ ".${uvscan_datfile}" = . ]; then
            echo "rc:uvscan:ERROR: unable to determine latest DAT file version" 1>&2
            return 1
        fi
        uvscan_tmpdir=`echo "${uvscan_datfile}" | sed -e 's;\.tar$;;'`
        uvscan_datadir="@l_prefix@/var/uvscan/data"

        #   determine old (installed) and new (available) versions
        uvscan_version_new=`echo "${uvscan_datfile}" | sed -e 's;^dat-;;' -e 's;\.tar$;;'`
        uvscan_version_old=`(cat "${uvscan_datadir}/VERSION") 2>/dev/null`
        if [ ".${uvscan_version_new}" = ".${uvscan_version_old}" ]; then
            #   still no need for updating
            return 0
        fi

        #   download and unpack latest DATs
        umask 077
        cd ${uvscan_datadir} || return 1
        rm -f ${uvscan_datfile} >/dev/null 2>&1 || true
        i=0
        while [ $i -lt 3 ]; do
            @l_prefix@/bin/curl -s -o ${uvscan_datfile} \
                ${uvscan_dat}/${uvscan_datfile} || return 1
            if [ $? -eq 0 ]; then
                break
            else
                rm -f ${uvscan_datfile} >/dev/null 2>&1 || true
                sleep 10
            fi
            i=$(($i + 1))
        done
        if [ ! -f ${uvscan_datfile} ]; then
            echo "rc:uvscan:ERROR: unable to download latest DAT file" 1>&2
            return 1
        fi
        rm -rf ${uvscan_tmpdir} >/dev/null 2>&1 || true
        mkdir ${uvscan_tmpdir}
        ( cd ${uvscan_tmpdir} && \
          @l_prefix@/bin/tar -xf ../${uvscan_datfile}
        ) || return 1

        #   update DAT repository by installing updated DAT files
        @l_prefix@/lib/openpkg/shtool install -m 644 -o @l_musr@ -g @l_mgrp@ \
            ${uvscan_tmpdir}/*.dat .
        echo "${uvscan_version_new}" >VERSION

        #   cleanup
        rm -f  ${uvscan_datfile} >/dev/null 2>&1 || true
        rm -rf ${uvscan_tmpdir}  >/dev/null 2>&1 || true
    }

%quarterly -u @l_musr@
    rcService uvscan enable yes || exit 0
    if [ ".$uvscan_update" = .quarterly ]; then
        uvscan_update || exit $?
    fi

%hourly -u @l_musr@
    rcService uvscan enable yes || exit 0
    if [ ".$uvscan_update" = .hourly ]; then
        uvscan_update || exit $?
    fi

%daily -u @l_musr@
    rcService uvscan enable yes || exit 0
    if [ ".$uvscan_update" = .daily ]; then
        uvscan_update || exit $?
    fi

%weekly -u @l_musr@
    rcService uvscan enable yes || exit 0
    if [ ".$uvscan_update" = .weekly ]; then
        uvscan_update || exit $?
    fi