Module: CarrierWave::SecureFile::Downloader

Defined in:
lib/carrierwave/securefile/downloader.rb

Class Method Summary collapse

Class Method Details

.call(uploader_model, activerecord_record, file_field) ⇒ Object 



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# File 'lib/carrierwave/securefile/downloader.rb', line 7

def call(uploader_model, activerecord_record, file_field)
	Rails.logger.debug "Downloading using #{CarrierWave::SecureFile.cryptable}..."
	file = nil
	downloader = uploader_model.new
	uploaded_file = activerecord_record
	filename = eval("uploaded_file.#{file_field.to_s}").to_s
	begin
		downloader.download!(filename)
		file = downloader.file.path.to_s
	rescue Exception => e
		Rails.logger.debug "Unable to download file: #{e}"
	end
	
	if File.exists? file
		ext_file = file + ".x1"
		File.rename(file,ext_file)
		configuration = CarrierWave::SecureFile.configuration
		if configuration.encryption_type.downcase.to_sym == :aes
			aes_key = configuration.aes_key
			if activerecord_record.respond_to? :aes_key
				aes_key = activerecord_record.aes_key
			end
			bf = CarrierWave::SecureFile::AESFileDecrypt.new(aes_key, configuration.aes_iv)
			bf.do ext_file, file
		else
			bf = CarrierWave::SecureFile.cryptable.new(configuration.cypher)
			bf.decrypt_file ext_file, file
		end
		File.unlink ext_file
		return { :file => file, :content_type => uploaded_file.content_type }
      else 
        # return nil if no file was found
        Rails.logger.debug "Unable to find the target file."
        nil
    	end
end