public static unsafe void Final(Context ctx, HeapPtr ptr)
{
byte[] hashResult;
Final(ctx, out hashResult);
ptr.MarshalData(hashResult);
}
public static unsafe void Final(Context ctx, HeapPtr ptr)
{
byte[] hashResult;
Final(ctx, out hashResult);
ptr.MarshalData(hashResult);
}
/// <summary>
/// Calculates the lockdown checkrevision.
/// </summary>
/// <param name="file1">The first game file</param>
/// <param name="file2">The second game file</param>
/// <param name="file3">The third game file</param>
/// <param name="valueString">The value calculation string from the server</param>
/// <param name="version">The version</param>
/// <param name="checksum">The checksum</param>
/// <param name="digest">The result</param>
/// <param name="lockdownFile">The name of the lockdown file</param>
/// <param name="imageDump">The path to the screen dump</param>
/// <returns></returns>
public static unsafe bool CheckRevision(string file1, string file2, string file3, byte[] valueString, ref int version, ref int checksum, out byte[] digest,
string lockdownFile, string imageDump)
{
int returnIsValid = 1;
int moduleOffset = 0;
int seed, i;
digest = null;
int digit = GetDigit(lockdownFile);
seed = seeds[digit];
version = PeFileLoader.GetVersion(file1);
// note that the HeapPtr can be implicitly cast to byte* and so therefore
// can be used in method calls that would normally accept a byte* parameter.
using (HeapPtr pSha1Buf = new HeapPtr(20, AllocMethod.HGlobal))
using (HeapPtr pSha1Buf2 = new HeapPtr(20, AllocMethod.HGlobal))
using (HeapPtr pValStr = new HeapPtr(valueString.Length, AllocMethod.HGlobal))
using (HeapPtr pValStrEnc = new HeapPtr(valueString.Length, AllocMethod.HGlobal))
using (HeapPtr pValStrBuffer1 = new HeapPtr(0x40, AllocMethod.HGlobal))
using (HeapPtr pValStrBuffer2 = new HeapPtr(0x40, AllocMethod.HGlobal))
using (HeapPtr pTempMem = new HeapPtr(16, AllocMethod.HGlobal))
using (HeapPtr pDigest = new HeapPtr(17, AllocMethod.HGlobal))
{
pValStr.MarshalData(valueString);
if (!ShuffleValueString(pValStr, valueString.Length, pValStrEnc))
{
return(false);
}
Native.Memset(pValStrBuffer1.ToPointer(), 0x36, 0x40);
Native.Memset(pValStrBuffer2.ToPointer(), 0x5c, 0x40);
byte *valuestrBuffer1 = pValStrBuffer1;
byte *valuestrBuffer2 = pValStrBuffer2;
byte *valueStrEncoded = pValStrEnc;
for (i = 0; i < 0x10; i++)
{
valuestrBuffer1[i] ^= valueStrEncoded[i];
valuestrBuffer2[i] ^= valueStrEncoded[i];
}
LockdownSha1.Context context = LockdownSha1.Init();
LockdownSha1.Update(context, valuestrBuffer1, 0x40);
if (!HashFile(context, lockdownFile, seed))
{
return(false);
}
if (!HashFile(context, file1, seed))
{
return(false);
}
if (!HashFile(context, file2, seed))
{
return(false);
}
if (!HashFile(context, file3, seed))
{
return(false);
}
LockdownSha1.HashFile(context, imageDump);
LockdownSha1.Update(context, (byte *)&returnIsValid, 4);
LockdownSha1.Update(context, (byte *)&moduleOffset, 4);
LockdownSha1.Final(context, pSha1Buf);
context = LockdownSha1.Init();
LockdownSha1.Update(context, pValStrBuffer2, 0x40);
LockdownSha1.Update(context, pSha1Buf, 0x14);
LockdownSha1.Final(context, pSha1Buf2);
checksum = *(int *)((byte *)pSha1Buf2);
Native.Memmove(pTempMem, ((byte *)pSha1Buf2) + 4, 0x10);
int valstrLen = 0xff;
if (!CalculateDigest(pDigest, ref valstrLen, pTempMem))
{
return(false);
}
((byte *)pDigest)[valstrLen] = 0x00;
digest = new byte[valstrLen];
Marshal.Copy(new IntPtr(pDigest.ToPointer()), digest, 0, valstrLen);
}
return(true);
}
/// <summary>
/// Calculates the lockdown checkrevision.
/// </summary>
/// <param name="file1">The first game file</param>
/// <param name="file2">The second game file</param>
/// <param name="file3">The third game file</param>
/// <param name="valueString">The value calculation string from the server</param>
/// <param name="version">The version</param>
/// <param name="checksum">The checksum</param>
/// <param name="digest">The result</param>
/// <param name="lockdownFile">The name of the lockdown file</param>
/// <param name="imageDump">The path to the screen dump</param>
/// <returns></returns>
public static unsafe bool CheckRevision(string file1, string file2, string file3, byte[] valueString, ref int version, ref int checksum, out byte[] digest,
string lockdownFile, string imageDump)
{
int returnIsValid = 1;
int moduleOffset = 0;
int seed, i;
digest = null;
int digit = GetDigit(lockdownFile);
seed = seeds[digit];
version = PeFileLoader.GetVersion(file1);
// note that the HeapPtr can be implicitly cast to byte* and so therefore
// can be used in method calls that would normally accept a byte* parameter.
using (HeapPtr pSha1Buf = new HeapPtr(20, AllocMethod.HGlobal))
using (HeapPtr pSha1Buf2 = new HeapPtr(20, AllocMethod.HGlobal))
using (HeapPtr pValStr = new HeapPtr(valueString.Length, AllocMethod.HGlobal))
using (HeapPtr pValStrEnc = new HeapPtr(valueString.Length, AllocMethod.HGlobal))
using (HeapPtr pValStrBuffer1 = new HeapPtr(0x40, AllocMethod.HGlobal))
using (HeapPtr pValStrBuffer2 = new HeapPtr(0x40, AllocMethod.HGlobal))
using (HeapPtr pTempMem = new HeapPtr(16, AllocMethod.HGlobal))
using (HeapPtr pDigest = new HeapPtr(17, AllocMethod.HGlobal))
{
pValStr.MarshalData(valueString);
if (!ShuffleValueString(pValStr, valueString.Length, pValStrEnc))
{
return false;
}
Native.Memset(pValStrBuffer1.ToPointer(), 0x36, 0x40);
Native.Memset(pValStrBuffer2.ToPointer(), 0x5c, 0x40);
byte* valuestrBuffer1 = pValStrBuffer1;
byte* valuestrBuffer2 = pValStrBuffer2;
byte* valueStrEncoded = pValStrEnc;
for (i = 0; i < 0x10; i++)
{
valuestrBuffer1[i] ^= valueStrEncoded[i];
valuestrBuffer2[i] ^= valueStrEncoded[i];
}
LockdownSha1.Context context = LockdownSha1.Init();
LockdownSha1.Update(context, valuestrBuffer1, 0x40);
if (!HashFile(context, lockdownFile, seed))
return false;
if (!HashFile(context, file1, seed))
return false;
if (!HashFile(context, file2, seed))
return false;
if (!HashFile(context, file3, seed))
return false;
LockdownSha1.HashFile(context, imageDump);
LockdownSha1.Update(context, (byte*)&returnIsValid, 4);
LockdownSha1.Update(context, (byte*)&moduleOffset, 4);
LockdownSha1.Final(context, pSha1Buf);
context = LockdownSha1.Init();
LockdownSha1.Update(context, pValStrBuffer2, 0x40);
LockdownSha1.Update(context, pSha1Buf, 0x14);
LockdownSha1.Final(context, pSha1Buf2);
checksum = *(int*)((byte*)pSha1Buf2);
Native.Memmove(pTempMem, ((byte*)pSha1Buf2) + 4, 0x10);
int valstrLen = 0xff;
if (!CalculateDigest(pDigest, ref valstrLen, pTempMem))
{
return false;
}
((byte*)pDigest)[valstrLen] = 0x00;
digest = new byte[valstrLen];
Marshal.Copy(new IntPtr(pDigest.ToPointer()), digest, 0, valstrLen);
}
return true;
}
