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Contents
# frozen_string_literal: true
module OoxmlParser
# Check if file is encrypted
class EncryptionChecker
def initialize(file_path, ignore_system: false)
@file_path = file_path
@ignore_system = ignore_system
end
# @return [Boolean] is file encrypted
def encrypted?
return false unless compatible_system?
# Support of Encrypted status in `file` util was introduced in file v5.20
# but LTS version of ubuntu before 16.04 uses older `file` and it return `Composite Document`
# https://github.com/file/file/blob/0eb7c1b83341cc954620b45d2e2d65ee7df1a4e7/ChangeLog#L623
if mime_type.include?('encrypted') ||
mime_type.include?('Composite Document File V2 Document, No summary info') ||
mime_type.include?('application/CDFV2-corrupt')
warn("File #{@file_path} is encrypted. Can't parse it")
return true
end
false
end
private
# Check if system is compatible with `file` utility
# @return [Boolean] Result of check
def compatible_system?
return true if !Gem.win_platform? && !@ignore_system
warn 'Checking file for encryption is not supported on Windows'
false
end
# @return [String] mime type of file
def mime_type
@mime_type ||= `file -b --mime "#{@file_path}"`
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems