public IntPtr Execute(IExpression expression, IProcessReader processReader)
{
Contract.Requires(expression != null);
Contract.Requires(processReader != null);
return(CompileExpression(expression)(processReader));
}
private static bool GuessPointerNode(IntPtr address, IProcessReader process, out BaseNode node)
{
Contract.Requires(process != null);
node = null;
if (address.IsNull())
{
return(false);
}
var section = process.GetSectionToPointer(address);
if (section == null)
{
return(false);
}
if (section.Category == SectionCategory.CODE) // If the section contains code, it should be a function pointer.
{
node = new FunctionPtrNode();
return(true);
}
if (section.Category == SectionCategory.DATA || section.Category == SectionCategory.HEAP) // If the section contains data, it is at least a pointer to a class or something.
{
// Check if it is a vtable. Check if the first 3 values are pointers to a code section.
var possibleVmt = process.ReadRemoteObject <ThreePointersData>(address);
if (process.GetSectionToPointer(possibleVmt.Pointer1)?.Category == SectionCategory.CODE &&
process.GetSectionToPointer(possibleVmt.Pointer2)?.Category == SectionCategory.CODE &&
process.GetSectionToPointer(possibleVmt.Pointer3)?.Category == SectionCategory.CODE)
{
node = new VirtualMethodTableNode();
return(true);
}
// Check if it is a string.
var data = process.ReadRemoteMemory(address, IntPtr.Size * 2);
if (data.Take(IntPtr.Size).InterpretAsSingleByteCharacter().IsLikelyPrintableData())
{
node = new Utf8TextPtrNode();
return(true);
}
if (data.InterpretAsDoubleByteCharacter().IsLikelyPrintableData())
{
node = new Utf16TextPtrNode();
return(true);
}
// Now it could be a pointer to something else but we can't tell. :(
node = new PointerNode();
return(true);
}
return(false);
}
public ProcessBinaryReader(IProcessReader reader, ulong address) {
this.reader = reader;
baseAddress = address;
cache = new byte[CACHE_SIZE];
cacheAddress = 0;
cacheValid = false;
this.address = address;
}
public ProcessBinaryReader(IProcessReader reader, ulong address)
{
this.reader = reader;
baseAddress = address;
cache = new byte[CACHE_SIZE];
cacheAddress = 0;
cacheValid = false;
this.address = address;
}
public IntPtr Execute(IExpression expression, IProcessReader processReader)
{
Contract.Requires(expression != null);
Contract.Requires(processReader != null);
switch (expression)
{
case ConstantExpression constantExpression:
return(IntPtrExtension.From(constantExpression.Value));
case NegateExpression negateExpression:
return(Execute(negateExpression.Expression, processReader).Negate());
case ModuleExpression moduleExpression:
{
var module = processReader.GetModuleByName(moduleExpression.Name);
if (module != null)
{
return(module.Start);
}
return(IntPtr.Zero);
}
case AddExpression addExpression:
return(Execute(addExpression.Lhs, processReader).Add(Execute(addExpression.Rhs, processReader)));
case SubtractExpression subtractExpression:
return(Execute(subtractExpression.Lhs, processReader).Sub(Execute(subtractExpression.Rhs, processReader)));
case MultiplyExpression multiplyExpression:
return(Execute(multiplyExpression.Lhs, processReader).Mul(Execute(multiplyExpression.Rhs, processReader)));
case DivideExpression divideExpression:
return(Execute(divideExpression.Lhs, processReader).Div(Execute(divideExpression.Rhs, processReader)));
case ReadMemoryExpression readMemoryExpression:
var readFromAddress = Execute(readMemoryExpression.Expression, processReader);
if (readMemoryExpression.ByteCount == 4)
{
return(IntPtrExtension.From(processReader.ReadRemoteInt32(readFromAddress)));
}
else
{
return(IntPtrExtension.From(processReader.ReadRemoteInt64(readFromAddress)));
}
default:
throw new ArgumentException($"Unsupported operation '{expression.GetType().FullName}'.");
}
}
public static void DissectNodes(IEnumerable <BaseHexNode> nodes, IProcessReader reader, MemoryBuffer memory)
{
Contract.Requires(nodes != null);
Contract.Requires(Contract.ForAll(nodes, n => n != null));
Contract.Requires(memory != null);
foreach (var node in nodes)
{
if (GuessNode(node, reader, memory, out var guessedNode))
{
node.GetParentContainer()?.ReplaceChildNode(node, guessedNode);
}
}
}
public ProcessInfoForm(IProcessReader process)
{
Contract.Requires(process != null);
this.process = process;
InitializeComponent();
tabControl.ImageList = new ImageList();
tabControl.ImageList.Images.Add(Properties.Resources.B16x16_Category);
tabControl.ImageList.Images.Add(Properties.Resources.B16x16_Page_White_Stack);
modulesTabPage.ImageIndex = 0;
sectionsTabPage.ImageIndex = 1;
modulesDataGridView.AutoGenerateColumns = false;
sectionsDataGridView.AutoGenerateColumns = false;
// TODO: Workaround, Mono can't display a DataGridViewImageColumn.
if (NativeMethods.IsUnix())
{
moduleIconDataGridViewImageColumn.Visible = false;
}
}
public static bool GuessNode(BaseHexNode node, IProcessReader reader, MemoryBuffer memory, out BaseNode guessedNode)
{
Contract.Requires(node != null);
Contract.Requires(memory != null);
guessedNode = null;
var offset = node.Offset;
var is4ByteAligned = offset % 4 == 0;
var is8ByteAligned = offset % 8 == 0;
// The node is not aligned, skip it.
if (!is4ByteAligned)
{
return(false);
}
var data64 = new UInt64FloatDoubleData
{
Raw1 = memory.ReadInt32(offset),
Raw2 = memory.ReadInt32(offset + sizeof(int))
};;
var data32 = new UInt32FloatData
{
Raw = memory.ReadInt32(offset)
};
var raw = memory.ReadBytes(offset, node.MemorySize);
if (raw.InterpretAsSingleByteCharacter().IsLikelyPrintableData())
{
guessedNode = new Utf8TextNode();
return(true);
}
if (raw.InterpretAsDoubleByteCharacter().IsLikelyPrintableData())
{
guessedNode = new Utf16TextNode();
return(true);
}
#if RECLASSNET64
if (is8ByteAligned)
{
if (GuessPointerNode(data64.IntPtr, reader, out guessedNode))
{
return(true);
}
}
#else
if (GuessPointerNode(data32.IntPtr, reader, out guessedNode))
{
return(true);
}
#endif
// 0 could be anything.
if (data32.IntValue != 0)
{
// If the data represents a reasonable range, it could be a float.
if (-999999.0f <= data32.FloatValue && data32.FloatValue <= 999999.0f && !data32.FloatValue.IsNearlyEqual(0.0f, 0.001f))
{
guessedNode = new FloatNode();
return(true);
}
if (-999999 <= data32.IntValue && data32.IntValue <= 999999)
{
guessedNode = new Int32Node();
return(true);
}
}
if (is8ByteAligned)
{
if (data64.LongValue != 0)
{
// If the data represents a reasonable range, it could be a double.
if (-999999.0 <= data64.DoubleValue && data64.DoubleValue <= 999999.0 && !data64.DoubleValue.IsNearlyEqual(0.0, 0.001))
{
guessedNode = new DoubleNode();
return(true);
}
}
}
return(false);
}
