#!/bin/sh

start_clamd() {
    clamd --config-file=/etc/clamav/clamd.conf
    echo "Waiting for clamd..."
    attempts=0
    while [ ! -S /tmp/clamd.sock ] && [ "$attempts" -lt 120 ]; do
        sleep 0.5
        attempts=$((attempts + 1))
    done
    if [ ! -S /tmp/clamd.sock ]; then
        echo "ERROR: clamd failed to start"
        cat /tmp/clamd.log 2>/dev/null
        exit 2
    fi
    echo "clamd ready ($(cat /tmp/clamd.log 2>/dev/null | grep -c 'loaded') databases loaded)"
}

case "${1}" in
  version )
    echo "stage: ${1}"
    clamscan --version
    clamconf | sed -ne '/Database information/,/^$/p'
    for file in /var/lib/clamav/* ;
    do
      (clamscan -d $file /proc/cmdline > /dev/null 2>&1) && echo "+ ${file}" || echo "Bad Signaturefile ${file}"
    done
    echo "$(sigtool --list-sigs | wc -l) Signatures loaded"
    ;;
  scan )
    echo "stage: ${1}"
    start_clamd
    echo "Starting multiscan of /data:"
    clamdscan --multiscan /data
    rc=$?
    exit $rc
    ;;
  * )
    echo "stage: ${1}"
    echo "Usage: scan | version | shell"
    echo "  scan    - multithreaded scan of /data via clamd"
    echo "  version - show engine + signature info"
    /bin/sh
    ;;
esac