public FirmwareBinary(byte[] data, string buildName)
{
/* stream is now owned/managed by this class */
_stream = new MemoryStream(data);
BuildName = buildName;
byte[] bArr = new byte[4];
try
{
if (_stream.Read(bArr) != -1)
{
_magic = (((long)bArr[2] & 255) << 16) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[1] & 255) << 8) | (((long)bArr[0]) & 255);
if (_magic != FOTA_BIN_MAGIC)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.InvalidMagic,
Loc.Resolve("fw_fail_no_magic"));
}
}
if (_stream.Read(bArr) != -1)
{
TotalSize = (((long)bArr[2] & 255) << 16) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[1] & 255) << 8) | (((long)bArr[0]) & 255);
if (TotalSize == 0)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.SizeZero,
Loc.Resolve("fw_fail_size_null"));
}
}
if (_stream.Read(bArr) != -1)
{
SegmentsCount = (((long)bArr[1] & 255) << 8) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[2] & 255) << 16) | (((long)bArr[0]) & 255);
if (SegmentsCount == 0)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.NoSegmentsFound,
Loc.Resolve("fw_fail_no_segments"));
}
}
Segments = new FirmwareSegment[SegmentsCount];
for (var i = 0; i < SegmentsCount; i++)
{
Segments[i] = new FirmwareSegment(i, SegmentsCount, _stream);
}
_stream.Seek(-4, SeekOrigin.End);
_stream.Read(bArr, 0, 4);
Crc32 = BitConverter.ToInt32(bArr);
}
catch (Exception ex) when(!(ex is FirmwareParseException))
{
_stream.Close();
Log.Error($"FirmwareBinary: Failed to decode binary: {ex}");
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.Unknown,
$"{Loc.Resolve("fw_fail_unknown")}\n{ex}");
}
}
public FirmwareBinary(byte[] data, string buildName)
{
/* stream is now owned/managed by this class */
_stream = new MemoryStream(data);
BuildName = buildName;
byte[] bArr = new byte[4];
try
{
if (_stream.Read(bArr) != -1)
{
_magic = (((long)bArr[2] & 255) << 16) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[1] & 255) << 8) | (((long)bArr[0]) & 255);
if (_magic != FOTA_BIN_MAGIC && _magic != FOTA_BIN_MAGIC_COMBINATION)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.InvalidMagic,
Loc.Resolve("fw_fail_no_magic"));
}
if (_magic == FOTA_BIN_MAGIC_COMBINATION)
{
// Notify bug tracker about this event and submit firmware build info
SentrySdk.CaptureMessage($"BCOM-Firmware discovered. Build: {buildName}, Content: {Convert.ToBase64String(data)}", SentryLevel.Info);
Log.Fatal("FirmwareBinary: Parsing internal debug firmware. " +
"This is unsupported by this application as these binaries are not meant for retail devices.");
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.InvalidMagic,
Loc.Resolve("fw_fail_no_magic"));
}
}
if (_stream.Read(bArr) != -1)
{
TotalSize = (((long)bArr[2] & 255) << 16) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[1] & 255) << 8) | (((long)bArr[0]) & 255);
if (TotalSize == 0)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.SizeZero,
Loc.Resolve("fw_fail_size_null"));
}
}
if (_stream.Read(bArr) != -1)
{
SegmentsCount = (((long)bArr[1] & 255) << 8) | (((long)bArr[3] & 255) << 24) |
(((long)bArr[2] & 255) << 16) | (((long)bArr[0]) & 255);
if (SegmentsCount == 0)
{
_stream.Close();
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.NoSegmentsFound,
Loc.Resolve("fw_fail_no_segments"));
}
}
Segments = new FirmwareSegment[SegmentsCount];
for (var i = 0; i < SegmentsCount; i++)
{
Segments[i] = new FirmwareSegment(i, SegmentsCount, _stream);
}
_stream.Seek(-4, SeekOrigin.End);
_stream.Read(bArr, 0, 4);
Crc32 = BitConverter.ToInt32(bArr);
}
catch (Exception ex) when(!(ex is FirmwareParseException))
{
_stream.Close();
Log.Error($"FirmwareBinary: Failed to decode binary: {ex}");
throw new FirmwareParseException(FirmwareParseException.ErrorCodes.Unknown,
$"{Loc.Resolve("fw_fail_unknown")}\n{ex}");
}
}
