/// <summary>
///
/// </summary>
/// <param name="expected"></param>
/// <param name="actual"></param>
/// <returns></returns>
private bool VerifyHash(byte[] expected, byte[] actual)
{
bool verified = FirmwareUpgrade.CompareMD5Hash(expected, actual);
Log.Debug(string.Format("VerifyHash: expected=\"{0}\"", FirmwareUpgrade.MD5HashToString(expected)));
Log.Debug(string.Format("VerifyHash: actual =\"{0}\"", FirmwareUpgrade.MD5HashToString(actual)));
Log.Debug(string.Format("VerifyHash: {0}", verified ? "PASSED" : "FAILED"));
return(verified);
}
/// <summary>
/// Download firmware zip file from iNet server.
/// </summary>
/// <remarks>
/// </remarks>
/// <returns>
/// true if call to iNet succeeds, and it returns us new firmware.
///
/// false if call to iNet succeeds, but iNet purposely doesn't give us back any firmware.
///
/// Throws an exception if we fail to download firmware due to download errors, etc.
/// </returns>
private bool DownloadFirmware()
{
string funcMsg = Name + ".DownloadFirmware: ";
Log.Debug(string.Format("{0}Attempting to download firmware; the maximum number of tries is {1}", funcMsg, MAX_ATTEMPTS));
string msg = string.Empty;
for (int attempt = 1; attempt <= MAX_ATTEMPTS; attempt++)
{
Log.Debug(string.Format("{0}attempt {1} of {2}", funcMsg, attempt, MAX_ATTEMPTS));
Master.Instance.ConsoleService.UpdateAction(ConsoleServiceResources.DOWNLOADING);
//We don't need to consider SubType for DSX as of now, since the Firmware varies only for instrument's Subtype.
string equipmentType = Configuration.DockingStation.Type.ToString();
using (InetDownloader inetDownloader = new InetDownloader())
{
FirmwareUpgrade = inetDownloader.DownloadFirmwareUpgrade(null, _firmwareUpgradeEvent.Errors, EquipmentTypeCode.VDS, equipmentType, null, equipmentType);
}
if (FirmwareUpgrade == null)
{
Log.Debug(string.Format("{0}Nothing returned by iNet.", funcMsg));
return(false);
}
if (FirmwareUpgrade.Firmware == null)
{
Log.Debug(string.Format("{0}No firmware returned by iNet.", funcMsg));
return(false);
}
Log.Debug(string.Format("{0}Firmware DeviceType: {1}.", funcMsg, FirmwareUpgrade.EquipmentCode));
Log.Debug(string.Format("{0}Firmware Version: {1}.", funcMsg, FirmwareUpgrade.Version));
Log.Debug(string.Format("{0}Firmware Size: {1} bytes.", funcMsg, FirmwareUpgrade.Firmware.Length));
Log.Debug(string.Format("{0}Firmware iNet checksum: \"{1}\".", funcMsg, FirmwareUpgrade.MD5HashToString(FirmwareUpgrade.MD5Hash)));
if (FirmwareUpgrade.EquipmentCode != Configuration.DockingStation.Type.ToString())
{
msg = string.Format("Downloaded firmware is for wrong device type (\"{0}\"). Expected \"{1}\" ", FirmwareUpgrade.EquipmentCode, Configuration.DockingStation.Type.ToString());
Log.Error(msg);
throw new FirmwareUpgradeException(msg);
}
Master.Instance.ConsoleService.UpdateAction(ConsoleServiceResources.VERIFYING);
byte[] hash = new MD5CryptoServiceProvider().ComputeHash(FirmwareUpgrade.Firmware);
bool verified = VerifyHash(FirmwareUpgrade.MD5Hash, hash);
if (verified)
{
Log.Debug(string.Format("{0}Firmware successfully downloaded.", funcMsg));
return(true);
}
Log.Debug(string.Format("{0}Verification of MD5 hash failed.", funcMsg));
}
msg = string.Format("{0}Unable to download firwmare after {1} attempts.", funcMsg, MAX_ATTEMPTS);
Log.Error(msg);
throw new FirmwareUpgradeException(msg);
}