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Copy pathMemoryBuffer.cs
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569 lines (454 loc) · 14.7 KB
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using System;
using System.Diagnostics.Contracts;
using System.Runtime.InteropServices;
using System.Text;
using ReClassNET.Extensions;
using ReClassNET.Util;
namespace ReClassNET.Memory
{
public class MemoryBuffer
{
private byte[] data;
private byte[] historyData;
private bool hasHistory;
public RemoteProcess Process { get; set; }
public byte[] RawData => data;
public int Size
{
get => data.Length;
set
{
if (value != data.Length)
{
data = new byte[value];
historyData = new byte[value];
hasHistory = false;
ContainsValidData = false;
}
}
}
public int Offset { get; set; }
public bool ContainsValidData { get; private set; }
[ContractInvariantMethod]
private void ObjectInvariants()
{
Contract.Invariant(data != null);
Contract.Invariant(historyData != null);
}
public MemoryBuffer()
: this(0)
{
Contract.Ensures(data != null);
Contract.Ensures(historyData != null);
}
public MemoryBuffer(int size)
{
Contract.Requires(size >= 0);
Contract.Ensures(data != null);
Contract.Ensures(historyData != null);
data = new byte[size];
historyData = new byte[size];
}
public MemoryBuffer(MemoryBuffer other)
{
Contract.Requires(other != null);
Contract.Ensures(data != null);
Contract.Ensures(historyData != null);
data = other.data;
historyData = other.historyData;
hasHistory = other.hasHistory;
ContainsValidData = other.ContainsValidData;
}
public MemoryBuffer Clone()
{
Contract.Ensures(Contract.Result<MemoryBuffer>() != null);
return new MemoryBuffer(this)
{
Offset = Offset,
Process = Process
};
}
public void Update(IntPtr address)
{
Update(address, true);
}
public void Update(IntPtr address, bool setHistory)
{
if (Process == null)
{
data.FillWithZero();
hasHistory = false;
return;
}
if (setHistory)
{
Array.Copy(data, historyData, data.Length);
hasHistory = ContainsValidData;
}
ContainsValidData = Process.ReadRemoteMemoryIntoBuffer(address, ref data);
if (!ContainsValidData)
{
data.FillWithZero();
hasHistory = false;
}
}
public byte[] ReadBytes(IntPtr offset, int length)
{
return ReadBytes(offset.ToInt32(), length);
}
public byte[] ReadBytes(int offset, int length)
{
Contract.Requires(offset >= 0);
Contract.Requires(length >= 0);
var buffer = new byte[length];
ReadBytes(offset, buffer);
return buffer;
}
public void ReadBytes(IntPtr offset, byte[] buffer)
{
Contract.Requires(buffer != null);
ReadBytes(offset.ToInt32(), buffer);
}
public void ReadBytes(int offset, byte[] buffer)
{
Contract.Requires(offset >= 0);
Contract.Requires(buffer != null);
offset = Offset + offset;
if (offset + buffer.Length > data.Length)
{
return;
}
Array.Copy(data, offset, buffer, 0, buffer.Length);
}
public T ReadObject<T>(IntPtr offset) where T : struct
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadObject<T>(offset.ToInt32());
}
public T ReadObject<T>(int offset) where T : struct
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + Marshal.SizeOf(typeof(T)) > data.Length)
{
return default(T);
}
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
var obj = Marshal.PtrToStructure<T>(handle.AddrOfPinnedObject() + offset);
handle.Free();
return obj;
}
#region Read Primitive Types
/// <summary>Reads a <see cref="sbyte"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="sbyte"/> or 0 if the offset is outside the data.</returns>
public sbyte ReadInt8(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadInt8(offset.ToInt32());
}
/// <summary>Reads a <see cref="sbyte"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="sbyte"/> or 0 if the offset is outside the data.</returns>
public sbyte ReadInt8(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(sbyte) > data.Length)
{
return default(sbyte);
}
return (sbyte)data[offset];
}
/// <summary>Reads a <see cref="byte"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="byte"/> or 0 if the offset is outside the data.</returns>
public byte ReadUInt8(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadUInt8(offset.ToInt32());
}
/// <summary>Reads a <see cref="byte"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="byte"/> or 0 if the offset is outside the data.</returns>
public byte ReadUInt8(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(byte) > data.Length)
{
return default(byte);
}
return data[offset];
}
/// <summary>Reads a <see cref="short"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="short"/> or 0 if the offset is outside the data.</returns>
public short ReadInt16(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadInt16(offset.ToInt32());
}
/// <summary>Reads a <see cref="short"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="short"/> or 0 if the offset is outside the data.</returns>
public short ReadInt16(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(short) > data.Length)
{
return default(short);
}
return BitConverter.ToInt16(data, offset);
}
/// <summary>Reads a <see cref="ushort"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="ushort"/> or 0 if the offset is outside the data.</returns>
public ushort ReadUInt16(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadUInt16(offset.ToInt32());
}
/// <summary>Reads a <see cref="ushort"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="ushort"/> or 0 if the offset is outside the data.</returns>
public ushort ReadUInt16(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(ushort) > data.Length)
{
return default(ushort);
}
return BitConverter.ToUInt16(data, offset);
}
/// <summary>Reads a <see cref="int"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="int"/> or 0 if the offset is outside the data.</returns>
public int ReadInt32(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadInt32(offset.ToInt32());
}
/// <summary>Reads a <see cref="int"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="int"/> or 0 if the offset is outside the data.</returns>
public int ReadInt32(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(int) > data.Length)
{
return default(int);
}
return BitConverter.ToInt32(data, offset);
}
/// <summary>Reads a <see cref="uint"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="uint"/> or 0 if the offset is outside the data.</returns>
public uint ReadUInt32(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadUInt32(offset.ToInt32());
}
/// <summary>Reads a <see cref="uint"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="uint"/> or 0 if the offset is outside the data.</returns>
public uint ReadUInt32(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(uint) > data.Length)
{
return default(uint);
}
return BitConverter.ToUInt32(data, offset);
}
/// <summary>Reads a <see cref="long"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="long"/> or 0 if the offset is outside the data.</returns>
public long ReadInt64(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadInt64(offset.ToInt32());
}
/// <summary>Reads a <see cref="long"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="long"/> or 0 if the offset is outside the data.</returns>
public long ReadInt64(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(long) > data.Length)
{
return default(long);
}
return BitConverter.ToInt64(data, offset);
}
/// <summary>Reads a <see cref="ulong"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="ulong"/> or 0 if the offset is outside the data.</returns>
public ulong ReadUInt64(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadUInt64(offset.ToInt32());
}
/// <summary>Reads a <see cref="ulong"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="ulong"/> or 0 if the offset is outside the data.</returns>
public ulong ReadUInt64(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(ulong) > data.Length)
{
return default(ulong);
}
return BitConverter.ToUInt64(data, offset);
}
/// <summary>Reads a <see cref="float"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="float"/> or 0 if the offset is outside the data.</returns>
public float ReadFloat(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadFloat(offset.ToInt32());
}
/// <summary>Reads a <see cref="float"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="float"/> or 0 if the offset is outside the data.</returns>
public float ReadFloat(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(float) > data.Length)
{
return default(float);
}
return BitConverter.ToSingle(data, offset);
}
/// <summary>Reads a <see cref="double"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="double"/> or 0 if the offset is outside the data.</returns>
public double ReadDouble(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadDouble(offset.ToInt32());
}
/// <summary>Reads a <see cref="double"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="double"/> or 0 if the offset is outside the data.</returns>
public double ReadDouble(int offset)
{
Contract.Requires(offset >= 0);
offset = Offset + offset;
if (offset + sizeof(double) > data.Length)
{
return default(double);
}
return BitConverter.ToDouble(data, offset);
}
/// <summary>Reads a <see cref="IntPtr"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="IntPtr"/> or 0 if the offset is outside the data.</returns>
public IntPtr ReadIntPtr(IntPtr offset)
{
Contract.Requires(offset.ToInt32() >= 0);
return ReadIntPtr(offset.ToInt32());
}
/// <summary>Reads a <see cref="IntPtr"/> from the specific offset.</summary>
/// <param name="offset">The offset into the data.</param>
/// <returns>The data read as <see cref="IntPtr"/> or 0 if the offset is outside the data.</returns>
public IntPtr ReadIntPtr(int offset)
{
Contract.Requires(offset >= 0);
#if RECLASSNET64
return (IntPtr)ReadInt64(offset);
#else
return (IntPtr)ReadInt32(offset);
#endif
}
#endregion
public string ReadPrintableAsciiString(IntPtr offset, int length)
{
Contract.Requires(offset.ToInt32() >= 0);
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
return ReadPrintableAsciiString(offset.ToInt32(), length);
}
public string ReadPrintableAsciiString(int offset, int length)
{
Contract.Requires(offset >= 0);
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
if (Offset + offset + length > data.Length)
{
length = Math.Max(data.Length - Offset - offset, 0);
}
if (length <= 0)
{
return string.Empty;
}
var sb = new StringBuilder(length);
for (var i = 0; i < length; ++i)
{
var c = (char)data[Offset + offset + i];
sb.Append(c.IsPrintable() ? c : '.');
}
return sb.ToString();
}
public string ReadString(Encoding encoding, IntPtr offset, int length)
{
Contract.Requires(encoding != null);
Contract.Requires(offset.ToInt32() >= 0);
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
return ReadString(encoding, offset.ToInt32(), length);
}
public string ReadString(Encoding encoding, int offset, int length)
{
Contract.Requires(encoding != null);
Contract.Requires(offset >= 0);
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
if (Offset + offset + length > data.Length)
{
length = data.Length - Offset - offset;
}
var sb = new StringBuilder(encoding.GetString(data, Offset + offset, length));
for (var i = 0; i < sb.Length; ++i)
{
if (!sb[i].IsPrintable())
{
sb[i] = '.';
}
}
return sb.ToString();
}
public bool HasChanged(IntPtr offset, int length)
{
return HasChanged(offset.ToInt32(), length);
}
public bool HasChanged(int offset, int length)
{
if (!hasHistory)
{
return false;
}
if (Offset + offset + length > data.Length)
{
return false;
}
var end = Offset + offset + length;
for (var i = Offset + offset; i < end; ++i)
{
if (data[i] != historyData[i])
{
return true;
}
}
return false;
}
}
}