/// <summary>
/// Updates the bridge configuration file with data from bridgeConfigurationData.
/// </summary>
public static async Task UpdateBridgeConfigurationFile()
{
if (BridgeInformation.demoMode)
{
return;
}
//Creates a json string from the data.
JsonObject jsonObject = new JsonObject();
jsonObject["bridgeIPAddress"] = JsonValue.CreateStringValue(bridgeConfigurationData.bridgeIPAddress);
jsonObject["bridgeAppKey"] = JsonValue.CreateStringValue(bridgeConfigurationData.bridgeAppKey);
string jsonString = jsonObject.Stringify();
//Encryptes the json string.
byte[] encryptedBytes = CryptographyAssistant.EncryptStringAes(jsonString);
//Writes the encrypted bytes to the brige configuration file.
brigeConfigurationFile = await storageFolder.GetFileAsync(bridgeConfigurationFileName);
using (var stream = await brigeConfigurationFile.OpenAsync(FileAccessMode.ReadWrite))
{
stream.Size = 0;
using (var outputStream = stream.GetOutputStreamAt(0))
{
using (var dataWriter = new DataWriter(outputStream))
{
dataWriter.WriteBytes(encryptedBytes);
await dataWriter.StoreAsync();
}
}
}
}
/// <summary>
/// Reads the bytes from the brige configuration file, decryptes them and trys to save the result in bridgeConfigurationData.
/// </summary>
/// <returns>Whether or not all expected data of the file could be read</returns>
public static async Task <bool> ReadBridgeConfigurationFile()
{
if (BridgeInformation.demoMode)
{
return(true);
}
bool completelySuccessful = true; //Is set to false, when when one or all variable cannot be readed.
brigeConfigurationFile = await storageFolder.GetFileAsync(bridgeConfigurationFileName);
byte[] fileInput;
using (Stream stream = await brigeConfigurationFile.OpenStreamForReadAsync())
{
using (MemoryStream memoryStream = new MemoryStream())
{
stream.CopyTo(memoryStream);
fileInput = memoryStream.ToArray();
}
stream.Dispose();
}
try
{
string jsonInput = CryptographyAssistant.DecryptStringAes(fileInput);
JsonObject jsonObject = JsonObject.Parse(jsonInput);
try
{
bridgeConfigurationData.bridgeIPAddress = jsonObject.GetNamedString("bridgeIPAddress");
}
catch
{
bridgeConfigurationData.bridgeIPAddress = "";
completelySuccessful = false;
}
try
{
bridgeConfigurationData.bridgeAppKey = jsonObject.GetNamedString("bridgeAppKey");
}
catch
{
bridgeConfigurationData.bridgeAppKey = "";
completelySuccessful = false;
}
}
catch
{
completelySuccessful = false;
};
return(completelySuccessful);
}
