module SymmetricEncryption::Utils::Files
Attributes
file_name[R]
Private Instance Methods
decode64(data)
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# File lib/symmetric_encryption/utils/files.rb, line 25 def decode64(data) Base64.strict_decode64(data) end
encode64(data)
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# File lib/symmetric_encryption/utils/files.rb, line 21 def encode64(data) Base64.strict_encode64(data) end
read_file_and_decode(file_name)
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# File lib/symmetric_encryption/utils/files.rb, line 8 def read_file_and_decode(file_name) raise(SymmetricEncryption::ConfigError, "file_name is mandatory for each key_file entry") unless file_name raise(SymmetricEncryption::ConfigError, "File #{file_name} could not be found") unless ::File.exist?(file_name) # TODO: Validate that file is not globally readable. decode64(read_from_file(file_name)) end
read_from_file(file_name)
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Read from the file, raising an exception if it is not found
# File lib/symmetric_encryption/utils/files.rb, line 38 def read_from_file(file_name) ::File.open(file_name, "rb", &:read) rescue Errno::ENOENT raise(SymmetricEncryption::ConfigError, "Symmetric Encryption key file: '#{file_name}' not found or readable") end
write_encoded_to_file(file_name, encrypted_data_key)
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# File lib/symmetric_encryption/utils/files.rb, line 17 def write_encoded_to_file(file_name, encrypted_data_key) write_to_file(file_name, encode64(encrypted_data_key)) end
write_to_file(file_name, data)
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Write to the supplied file_name
, backing up the existing file if present
# File lib/symmetric_encryption/utils/files.rb, line 30 def write_to_file(file_name, data) key_path = ::File.dirname(file_name) ::FileUtils.mkdir_p(key_path) unless ::File.directory?(key_path) ::File.rename(file_name, "#{file_name}.#{Time.now.to_i}") if ::File.exist?(file_name) ::File.open(file_name, "wb", 0o600) { |file| file.write(data) } end