Full backend debugging for dovecot-antispam

backend-caller.sh

#!/bin/bash
tmpf=/tmp/antispam.log.$$
(
        date
        id
        let i=0
        for arg; do
                let i=1+i
                echo "arg $i $arg"
        done
        cat - > $tmpf.msg
        <backend command goes here> "$@" < $tmpf.msg
        rc=$?
        echo rc=$rc
        date
        exit $rc
) 2> $tmpf.err > $tmpf.log