public override int ioWrite(sbyte[] inputBuffer, int inputOffset, int inputLength)
{
try
{
if (TruncateAtNextWrite)
{
// The file was open with PSP_O_TRUNC: truncate the file at the first write
long position = Position;
if (position < file.Length())
{
file.Length = Position;
}
TruncateAtNextWrite = false;
}
file.write(inputBuffer, inputOffset, inputLength);
}
catch (IOException e)
{
Console.WriteLine("ioWrite", e);
return(IO_ERROR);
}
return(inputLength);
}
public virtual int sceNpDrmRenameCheck(PspString fileName)
{
CryptoEngine crypto = new CryptoEngine();
int result = 0;
if (!NpDrmKeyStatus)
{
result = SceKernelErrors.ERROR_NPDRM_NO_K_LICENSEE_SET;
}
else
{
try
{
string pcfilename = Modules.IoFileMgrForUserModule.getDeviceFilePath(fileName.String);
SeekableRandomFile file = new SeekableRandomFile(pcfilename, "r");
string[] name = pcfilename.Split("/", true);
string fName = name[name.Length - 1];
for (int i = 0; i < name.Length; i++)
{
if (name[i].ToUpper().Contains("EDAT"))
{
fName = name[i];
}
}
// The file must contain a valid PSPEDAT header.
if (file.Length() < 0x80)
{
// Test if we're using already decrypted DLC.
// Discard the error in this situatuion.
if (!DisableDLCStatus)
{
Console.WriteLine("sceNpDrmRenameCheck: invalid file size");
result = SceKernelErrors.ERROR_NPDRM_INVALID_FILE;
}
file.Dispose();
}
else
{
// Setup the buffers.
sbyte[] inBuf = new sbyte[0x80];
sbyte[] srcData = new sbyte[0x30];
sbyte[] srcHash = new sbyte[0x10];
// Read the header.
file.readFully(inBuf);
file.Dispose();
// The data seed is stored at offset 0x10 of the PSPEDAT header.
Array.Copy(inBuf, 0x10, srcData, 0, 0x30);
// The hash to compare is stored at offset 0x40 of the PSPEDAT header.
Array.Copy(inBuf, 0x40, srcHash, 0, 0x10);
// If the CryptoEngine fails to find a match, then the file has been renamed.
if (!crypto.PGDEngine.CheckEDATRenameKey(fName.GetBytes(), srcHash, srcData))
{
if (!DisableDLCStatus)
{
result = SceKernelErrors.ERROR_NPDRM_NO_FILENAME_MATCH;
Console.WriteLine("sceNpDrmRenameCheck: the file has been renamed");
}
}
}
}
catch (FileNotFoundException e)
{
result = SceKernelErrors.ERROR_NPDRM_INVALID_FILE;
//if (log.DebugEnabled)
{
Console.WriteLine(string.Format("sceNpDrmRenameCheck: file '{0}' not found: {1}", fileName.String, e.ToString()));
}
}
catch (Exception e)
{
Console.WriteLine("sceNpDrmRenameCheck", e);
}
}
return(result);
}