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Contents
# frozen_string_literal: true
# The default virus scanner Hyrax::Works, ported from hydra_works.
# If ClamAV is present, it will be used to check for the presence of a virus. If ClamAV is not
# installed or otherwise not available to your application, Hyrax::Works does no virus checking
# add assumes files have no viruses.
#
# @example to use a virus checker other than Hyrax::VirusScanner:
# class MyScanner < Hyrax::Works::VirusScanner
# def infected?
# my_result = Scanner.check_for_viruses(file)
# [return true or false]
# end
# end
#
# # Then set Hyrax::Works to use your scanner either in a config file or initializer:
# Hyrax.config.virus_scanner = MyScanner
module Hyrax
class VirusScanner
attr_reader :file
# @api public
# @param file [String]
def self.infected?(file)
new(file).infected?
end
def initialize(file)
@file = file
end
# Override this method to use your own virus checking software
# @return [Boolean]
def infected?
defined?(ClamAV) ? clam_av_scanner : null_scanner
end
def clam_av_scanner
scan_result = ClamAV.instance.method(:scanfile).call(file)
return false if scan_result.zero?
warning "A virus was found in #{file}: #{scan_result}"
true
end
# Always return zero if there's nothing available to check for viruses. This means that
# we assume all files have no viruses because we can't conclusively say if they have or not.
def null_scanner
warning "Unable to check #{file} for viruses because no virus scanner is defined" unless
Rails.env.test?
false
end
private
def warning(msg)
Hyrax.logger&.warn(msg)
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems