public unsafe IEnumerable <NamedOffset> FindOffsets(NamedPattern[] patterns, IntPtrEx @base, int size)
{
var buff = new byte[size];
fixed(byte *ptr = buff)
if (!this.TryReadRawMemory(@base, ptr, size, out var read) || read != size)
{
return(null);
}
var baseval = @base.Pointer.ToInt32();
var offsets = new NamedOffset[patterns.Length];
for (var i = 0; i < patterns.Length; i++)
{
var pattern = patterns[i];
var off = this.FindPattern(pattern.Pattern, buff);
var ptr = 0;
if (!this.TryReadRawMemory(@base + off + pattern.PointerStart, &ptr, sizeof(int), out var read) || read != sizeof(int))
{
throw new InvalidProcessException();
}
offsets[i] = new NamedOffset(ptr - baseval, pattern.Name);
}
return(offsets);
}
/// <summary>
/// Reads and follows a pointer chain.
/// </summary>
/// <param name="addr">Address to start at.</param>
/// <param name="offsets">Offsets to follow.</param>
/// <returns>Final pointer.</returns>
public unsafe IntPtrEx ReadPointerChain(IntPtrEx addr, params int[] offsets)
{
foreach (var offset in offsets)
{
addr = this.ReadPointer(addr + offset);
}
return(addr);
}
private GameProcess(Process p, IntPtrEx gameModule, int moduleSize)
{
this._proc = p;
this._module = gameModule;
this._moduleSize = moduleSize;
this._cts = new CancellationTokenSource();
this._ct = this._cts.Token;
this._proc.Exited += this._proc_Exited;
}
/// <summary>
/// Reads a pointer from the process' memory.
/// </summary>
/// <param name="addr">Address to read from.</param>
/// <returns>Read pointer.</returns>
public unsafe IntPtrEx ReadPointer(IntPtrEx addr)
{
var ptrval = 0;
if (!this.TryReadRawMemory(addr, &ptrval, sizeof(int), out var read) || read != sizeof(int))
{
throw new MemoryReadException();
}
return(new IntPtr(ptrval));
}
private unsafe bool TryReadRawMemory(IntPtrEx addr, void *buff, int size, out int read)
{
read = -1;
if (!PInvoke.ReadProcessMemory(this._proc.Handle, addr.Pointer, buff, new IntPtr(size), out var pread))
{
return(false);
}
read = pread.ToInt32();
return(true);
}
/// <summary>
/// Reads data of a blittable data structure.
/// </summary>
/// <typeparam name="T">Type of data to read.</typeparam>
/// <param name="addr">Address to read from.</param>
/// <returns>Read data.</returns>
public unsafe T Read <T>(IntPtrEx addr)
where T : unmanaged
{
var val = default(T);
var size = sizeof(T);
if (!this.TryReadRawMemory(addr, &val, size, out var read) || read != size)
{
throw new MemoryReadException();
}
return(val);
}
/// <summary>
/// Reads a string from the process' memory.
/// </summary>
/// <param name="addr">Address to read from.</param>
/// <param name="maxLength">Maximum string length to read.</param>
/// <returns>Read string.</returns>
public unsafe string ReadString(IntPtrEx addr, int maxLength = 256)
{
var buff = stackalloc char[maxLength];
if (!this.TryReadRawMemory(addr, buff, maxLength * sizeof(char), out var read))
{
throw new MemoryReadException();
}
var spbuff = new Span <char>(buff, read / sizeof(char));
var len = spbuff.IndexOf('\0');
if (len < 0)
{
return(new string(spbuff));
}
return(new string(spbuff.Slice(0, len)));
}
/// <summary>
/// Reads an ANSI string from the process' memory.
/// </summary>
/// <param name="addr">Address to read from.</param>
/// <param name="maxLength">Maximum string length to read.</param>
/// <returns>Read string.</returns>
public unsafe string ReadAnsiString(IntPtrEx addr, int maxLength = 256)
{
var buff = stackalloc byte[maxLength];
if (!this.TryReadRawMemory(addr, buff, maxLength, out var read))
{
throw new MemoryReadException();
}
var spbuff = new Span <byte>(buff, read);
var len = spbuff.IndexOf((byte)0x00);
if (len >= 0)
{
spbuff = spbuff.Slice(0, len);
}
return(Encoding.ASCII.GetString(spbuff));
}
private void ValidateKlass(IntPtrEx klassPtr, params string[] refNames)
{
// For whatever bloody reason, the pointers are off by one sometimes.
// Always case with LSB
var ptrv = klassPtr.Pointer.ToInt32();
if ((ptrv & 0x1) == 0x1)
{
ptrv &= ~0x1;
}
var klass = this._mem.Read <RawClassInfo>(new IntPtr(ptrv));
var name = this._mem.ReadAnsiString(klass.Name);
if (!refNames.Any(x => name == x))
{
throw new InvalidProcessException();
}
}
public GameReader(ProcessMemory pmem, IntPtrEx module, int moduleSize)
{
this._mem = pmem;
this._module = module;
this._moduleSize = moduleSize;
this._state = new GameStateInfo();
var offsets = this._mem.FindOffsets(new NamedPattern[]
{
new NamedPattern(Offsets.ClientName, Offsets.ClientPattern, Offsets.ClientPatternPtrLocation),
new NamedPattern(Offsets.MeetingHudName, Offsets.MeetingHudPattern, Offsets.MeetingHudPatternPtrLocation),
new NamedPattern(Offsets.GameDataName, Offsets.GameDataPattern, Offsets.GameDataPatternPtrLocation),
new NamedPattern(Offsets.ShipStatusName, Offsets.ShipStatusPattern, Offsets.ShipStatusPatternPtrLocation)
}, this._module, this._moduleSize);
foreach (var offset in offsets)
{
switch (offset.Name)
{
case Offsets.ClientName:
Offsets.ClientBase = offset.Offset;
break;
case Offsets.MeetingHudName:
Offsets.MeetingHudBase = offset.Offset;
break;
case Offsets.GameDataName:
Offsets.GameDataBase = offset.Offset;
break;
case Offsets.ShipStatusName:
Offsets.ShipStatusBase = offset.Offset;
break;
}
}
if (Offsets.ClientBase == 0 || Offsets.MeetingHudBase == 0 || Offsets.GameDataBase == 0 || Offsets.ShipStatusBase == 0)
{
throw new InvalidProcessException();
}
}
