unsafe void ApplyPatch(string[] list)
{
int
baseAddr = (int)Process.GetCurrentProcess().MainModule.BaseAddress,
codeInjAddr = baseAddr + codeInjOffset,
mpqFuncAddr = baseAddr + mpqFuncOffset;
if (!Check(codeInjAddr, mpqFuncAddr))
{
Log.Error("LoadMPQ: Patch pattern mismatch (wrong game version?)");
return;
}
Log.Information("LoadMPQ: Injecting mpq archives");
int
extSz = sizeof(JmpOp) + ((sizeof(JmpOp) + sizeof(MovEspDwordOp)) * list.Length) + sizeof(JmpOp),
codeDestAddr = (int)Marshal.AllocHGlobal(extSz);
VirtualProtect(codeInjAddr, sizeof(JmpOp), erwFlag, out outPtr);
JmpOp.Write(codeInjAddr, codeDestAddr, false);
VirtualProtect(codeDestAddr, extSz, erwFlag, out outPtr);
var writeAddr = codeDestAddr;
JmpOp.Write(writeAddr, mpqFuncAddr, true);
writeAddr += sizeof(JmpOp);
for (int i = 0; i < list.Length; i++)
{
MovEspDwordOp.Write(writeAddr, (int)Marshal.StringToHGlobalAnsi(list[i]));
writeAddr += sizeof(MovEspDwordOp);
JmpOp.Write(writeAddr, mpqFuncAddr, true);
writeAddr += sizeof(JmpOp);
}
JmpOp.Write(writeAddr, codeInjAddr + sizeof(JmpOp), false);
}
unsafe bool Check(int codeInjAddr, int mpqFuncAddr)
{
return(JmpOp.Compare(*(JmpOp *)codeInjAddr, new JmpOp(mpqFuncAddr - (codeInjAddr + sizeof(JmpOp)), true)));
}
public static unsafe bool Compare(JmpOp opA, JmpOp opB)
{
return((opA.OpCode == opB.OpCode) && (opA.Offset == opB.Offset));
}
