internal void LoadDump(string filename)
{
// Load the file into a memory block
var bytes = ReadFileIntoByteArray(filename);
// Set up an XMODEM object
var xmodem = new XMODEM(_comport, XMODEM.Variants.XModemChecksum);
// First send the upload command
SendCommandWithoutResult($"UPLOAD{_cmdExtension}");
_comport.ReadLine(); // For the "110:WAITING FOR XMODEM" text
int numBytesSuccessfullySent = xmodem.Send(bytes);
if (numBytesSuccessfullySent == bytes.Length &&
xmodem.TerminationReason == XMODEM.TerminationReasonEnum.EndOfFile)
{
var msg = $"[+] File upload ok{Environment.NewLine}";
Console.WriteLine(msg);
txt_output.Text += msg;
}
else
{
var msg = $"[!] Failed to upload file{Environment.NewLine}";
MessageBox.Show(msg);
txt_output.Text += msg;
}
}
internal void SaveDump(string filename)
{
// Set up an XMODEM object
var xmodem = new XMODEM(_comport, XMODEM.Variants.XModemChecksum);
// First get the current memory size of the slot
var memsizeStr = SendCommand($"MEMSIZE{_cmdExtension}?");
int memsize = 4096; // Default value
if (!string.IsNullOrEmpty((string)memsizeStr))
{
int.TryParse((string)memsizeStr, out memsize);
}
// Also check if the tag is UL to save the counters too
var configStr = SendCommand($"CONFIG{_cmdExtension}?") as string;
if ((configStr != null) && (configStr.Contains("ULTRALIGHT")))
{
if (memsize < 4069)
{
memsize += 3 * 4; // 3 more pages
}
}
// Then send the download command
SendCommandWithoutResult($"DOWNLOAD{_cmdExtension}");
// For the "110:WAITING FOR XMODEM" text
_comport.ReadLine();
var ms = new MemoryStream();
var reason = xmodem.Receive(ms);
if (reason == XMODEM.TerminationReasonEnum.EndOfFile)
{
var msg = $"[+] File download from device ok{Environment.NewLine}";
Console.WriteLine(msg);
txt_output.Text += msg;
// Transfer successful, so convert MemoryStream to byte array
var bytes = ms.ToArray();
// Strip away the SUB (byte value 26) padding bytes
bytes = xmodem.TrimPaddingBytesFromEnd(bytes);
byte[] neededBytes = bytes;
if (bytes.Length > memsize)
{
// Create a new array same size as memsize
neededBytes = new byte[memsize];
Array.Copy(bytes, neededBytes, neededBytes.Length);
}
// Write the actual file
File.WriteAllBytes(filename, neededBytes);
msg = $"[+] File saved to {filename}{Environment.NewLine}";
Console.WriteLine(msg);
txt_output.Text += msg;
}
else
{
// Something went wrong during the transfer
var msg = $"[!] Failed to save dump{Environment.NewLine}";
MessageBox.Show(msg);
txt_output.Text += msg;
}
}
