Redmine

validate :validate_max_file_size, :validate_file_extension, **:virus_scan**

  # Scans the file for viruses

  def virus_scan

    # write to tmp file

    if @temp_file

      f = Tempfile.new('av')

      f.binmode

      if @temp_file.respond_to?(:read)

        buffer = ""

        while (buffer = @temp_file.read(8192))

          f.write(buffer)

        end

      else

        f.write(@temp_file)

      end

      # hand off to scanner

      f.flush

      result = %x[ /usr/local/bin/clamd-hook.sh #{f.path} ]

      if result.squish == "0"

        logger.info('virus detected, file rejected')

        errors.add(:base, 'Malware detected!')

      end

      f.close!

    end

  end