/// <summary>
/// Release Handle.
/// </summary>
/// <returns>
/// A boolean true if the handle was released. A boolean false otherwise.
/// </returns>
protected override bool ReleaseHandle()
{
NativeCapstoneImport.FreeInstructions(this.handle, (IntPtr)1);
this.handle = IntPtr.Zero;
return(true);
}
/// <summary>
/// Release Handle.
/// </summary>
/// <returns>
/// A boolean true if the handle was released. A boolean false otherwise.
/// </returns>
protected override bool ReleaseHandle()
{
var resultCode = NativeCapstoneImport.CloseDisassembler(ref this.handle);
var isHandleReleased = resultCode == NativeCapstoneResultCode.Ok;
return(isHandleReleased);
}
/// <summary>
/// Set a Disassembler Option.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="optionType">
/// A type of option to set.
/// </param>
/// <param name="optionValue">
/// A value to set the option to.
/// </param>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if the option could not be set.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassembler handle is invalid, or if the option is invalid.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// Thrown if the option is equal to <see cref="NativeDisassemblerOptionType.SetSkipDataConfig" />.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static void SetDisassemblerOption(NativeDisassemblerHandle hDisassembler, NativeDisassemblerOptionType optionType, NativeDisassemblerOptionValue optionValue)
{
if (optionType == NativeDisassemblerOptionType.SetSkipDataConfig)
{
var detailMessage = $"A disassembler option ({optionType}) is unsupported.";
throw new NotSupportedException(detailMessage);
}
// ...
//
// Throws an exception if the operation fails.
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, (IntPtr)optionValue);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if (resultCode == NativeCapstoneResultCode.InvalidHandle2)
{
var detailMessage = $"A disassembler handle ({nameof(hDisassembler)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(hDisassembler));
}
else if (resultCode == NativeCapstoneResultCode.InvalidOption)
{
var detailMessage = $"An option ({nameof(optionType)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(optionType));
}
else
{
var detailMessage = $"A disassembler option ({optionType}) could not be set.";
throw new CapstoneException(detailMessage);
}
}
}
/// <summary>
/// Set Disassembler Instruction Mnemonic Option.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="optionValue">
/// A value to set the instruction mnemonic option to.
/// </param>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if the instruction mnemonic option could not be set.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassembler handle is invalid.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static void SetInstructionMnemonicOption(NativeDisassemblerHandle hDisassembler, ref NativeInstructionMnemonicOptionValue optionValue)
{
var pOptionValue = IntPtr.Zero;
try {
pOptionValue = MarshalExtension.AllocHGlobal <NativeInstructionMnemonicOptionValue>();
Marshal.StructureToPtr(optionValue, pOptionValue, false);
// ...
//
// Throws an exception if the operation fails.
const NativeDisassemblerOptionType optionType = NativeDisassemblerOptionType.SetMnemonic;
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, pOptionValue);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if (resultCode == NativeCapstoneResultCode.InvalidHandle2)
{
var detailMessage = $"A disassembler handle ({nameof(hDisassembler)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(hDisassembler));
}
else
{
var detailMessage = $"A disassembler option ({optionType}) could not be set.";
throw new CapstoneException(detailMessage);
}
}
}
finally {
if (pOptionValue != IntPtr.Zero)
{
Marshal.FreeHGlobal(pOptionValue);
}
}
}
/// <summary>
/// Get an Instruction's Accessed Registers.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="hInstruction">
/// An instruction handle.
/// </param>
/// <returns>
/// A 2-tuple, where the first item is an array of the instruction's read registers and the second item is
/// an array of the instruction's written registers.
/// </returns>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if the instruction's accessed registers could not be retrieved.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassembler handle is invalid.
/// </exception>
/// <exception cref="System.InvalidOperationException">
/// Thrown if the instruction was disassembled when Instruction Details Mode was disabled, or if the
/// instruction was disassembled when Skip Data Mode was enabled.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// Thrown if Diet Mode is enabled, or if the disassembler's hardware architecture does not support the
/// operation.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed, or if the instruction handle is disposed.
/// </exception>
internal static Tuple <short[], short[]> GetAccessedRegisters(NativeDisassemblerHandle hDisassembler, NativeInstructionHandle hInstruction)
{
// ...
//
// Throws an exception if the operation fails.
var readRegisters = new short[64];
byte readRegistersCount = 0;
var writtenRegisters = new short[64];
byte writtenRegistersCount = 0;
var resultCode = NativeCapstoneImport.GetAccessedRegisters(hDisassembler, hInstruction, readRegisters, ref readRegistersCount, writtenRegisters, ref writtenRegistersCount);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if ((int)resultCode == -1)
{
// ...
//
// For some reason, the Capstone API will return a <c>-1</c>, instead of a defined error code, if
// the disassembler handle is invalid.
var detailMessage = $"A disassembler handle ({nameof(hDisassembler)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(hDisassembler));
}
else if (resultCode == NativeCapstoneResultCode.UnsupportedDisassembleArchitecture)
{
const string detailMessage = "A disassembler's hardware architecture is not supported.";
throw new NotSupportedException(detailMessage);
}
else if (resultCode == NativeCapstoneResultCode.UnSupportedDietModeOperation)
{
const string detailMessage = "An operation is not supported when diet mode is enabled.";
throw new NotSupportedException(detailMessage);
}
else if (resultCode == NativeCapstoneResultCode.UnsupportedInstructionDetail)
{
const string detailMessage = "An operation is not supported when instruction details are disabled.";
throw new InvalidOperationException(detailMessage);
}
else if (resultCode == NativeCapstoneResultCode.UnsupportedSkipDataModeOperation)
{
const string detailMessage = "An operation is not supported when skip-data mode is enabled.";
throw new InvalidOperationException(detailMessage);
}
else
{
const string detailMessage = "An instruction's accessed registers could not be retrieved.";
throw new CapstoneException(detailMessage);
}
}
var newReadRegisters = new short[readRegistersCount];
var newWrittenRegisters = new short[writtenRegistersCount];
Array.Copy(readRegisters, newReadRegisters, newReadRegisters.Length);
Array.Copy(writtenRegisters, newWrittenRegisters, newWrittenRegisters.Length);
var tuple = Tuple.Create(newReadRegisters, newWrittenRegisters);
return(tuple);
}
/// <summary>
/// Get Capstone Library's Version.
/// </summary>
/// <returns>
/// The Capstone library's version.
/// </returns>
internal static Version GetVersion()
{
var majorVersion = 0;
var minorVersion = 0;
NativeCapstoneImport.GetVersion(ref majorVersion, ref minorVersion);
var version = new Version(majorVersion, minorVersion);
return(version);
}
/// <summary>
/// Create an Instruction..
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <returns>
/// An instruction handle.
/// </returns>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static NativeInstructionHandle CreateInstruction(NativeDisassemblerHandle hDisassembler)
{
// ...
//
// Throws an exception if the operation fails.
var pInstruction = NativeCapstoneImport.CreateInstruction(hDisassembler);
var hInstruction = new NativeInstructionHandle(pInstruction);
return(hInstruction);
}
internal static void LoadLibrary()
{
// ...
//
// Some error checking should probably be added here, to make sure the library was loaded correctly.
// However, technically, if the library was not loaded correctly for whatever reason, there is very little
// that can be done anyway and the process will crash either way.
var platformDirectoryName = Environment.Is64BitProcess ? "x64" : "x86";
var thisAssemblyDirectoryPath = AppDomain.CurrentDomain.BaseDirectory;
var libraryFilePath = Path.Combine(thisAssemblyDirectoryPath, platformDirectoryName, "capstone.dll");
NativeCapstoneImport.LoadLibrary(libraryFilePath);
}
/// <summary>
/// Get a Register's Name.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="registerId">
/// A register unique identifier.
/// </param>
/// <returns>
/// The register's name. A null reference if the disassembler handle is invalid, or if the register unique
/// identifier is invalid.
/// </returns>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static unsafe string GetRegisterName(NativeDisassemblerHandle hDisassembler, int registerId)
{
// ...
//
// Throws an exception if the operation fails.
string registerName = null;
var pRegisterName = NativeCapstoneImport.GetRegisterName(hDisassembler, registerId);
if (pRegisterName != IntPtr.Zero)
{
registerName = new string((sbyte *)pRegisterName);
}
return(registerName);
}
/// <summary>
/// Get an Instruction Group's Name.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="instructionGroupId">
/// An instruction group's unique identifier.
/// </param>
/// <returns>
/// The instruction group's name. A null reference if the disassembler handle is invalid, or if the
/// instruction group's unique identifier is invalid.
/// </returns>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static unsafe string GetInstructionGroupName(NativeDisassemblerHandle hDisassembler, int instructionGroupId)
{
// ...
//
// Throws an exception if the operation fails.
string instructionGroupName = null;
var pInstructionGroupName = NativeCapstoneImport.GetInstructionGroupName(hDisassembler, instructionGroupId);
if (pInstructionGroupName != IntPtr.Zero)
{
instructionGroupName = new string((sbyte *)pInstructionGroupName);
}
return(instructionGroupName);
}
/// <summary>
/// Disassemble Binary Code Iteratively.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="binaryCode">
/// A buffer indicating the binary code to disassemble.
/// </param>
/// <param name="binaryCodeOffset">
/// The index of the instruction to disassemble in the binary code buffer . If the instruction is
/// disassembled successfully, this value will be updated to reflect the index of the next instruction to
/// disassemble in the binary code buffer. If the updated value is less than the length of the binary code
/// buffer, you can safely invoke this method with the updated value to disassemble the next instruction.
/// </param>
/// <param name="address">
/// The address of the instruction. If the instruction is disassembled successfully, this value will be
/// updated to reflect the address of the next instruction to disassemble in the binary code buffer.
/// </param>
/// <param name="hInstruction">
/// An instruction handle.
/// </param>
/// <returns>
/// A boolean true if an instruction was disassembled successfully. A boolean false otherwise.
/// </returns>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed, or if the instruction handle is disposed.
/// </exception>
internal static bool Iterate(NativeDisassemblerHandle hDisassembler, byte[] binaryCode, ref int binaryCodeOffset, ref long address, NativeInstructionHandle hInstruction)
{
var hBinaryCode = GCHandle.Alloc(binaryCode, GCHandleType.Pinned);
try {
// ...
//
// First, we increment the pointer to the binary code buffer to the point to the address of the
// instruction we want to disassemble.
var pBinaryCode = hBinaryCode.AddrOfPinnedObject() + binaryCodeOffset;
// ...
//
// Second, we calculate the size of the binary code buffer by decrementing the offset we incremented
// by in the previous step.
var binaryCodeSize = (IntPtr)binaryCode.Length - binaryCodeOffset;
// ...
//
// Third, we save the address of the binary code buffer we will disassemble, so that we can later
// compute a new offset, and disassemble the binary code. If an instruction was disassembled
// successfully, the pointer to the binary code, the binary code size, and the starting address will
// be updated by the Capstone API to reflect the address of the next instruction to disassemble in the
// binary code buffer.
//
// Throws an exception if the operation fails.
var initialPBinaryCode = pBinaryCode;
var isDisassembled = NativeCapstoneImport.Iterate(hDisassembler, ref pBinaryCode, ref binaryCodeSize, ref address, hInstruction);
if (isDisassembled)
{
// ...
//
// Fourth, we compute a new offset to indicate to the caller the next instruction to disassemble
// in the binary code buffer.
binaryCodeOffset += (int)((long)pBinaryCode - (long)initialPBinaryCode);
}
return(isDisassembled);
}
finally {
if (hBinaryCode.IsAllocated)
{
hBinaryCode.Free();
}
}
}
internal static void SetSkipDataOption(NativeDisassemblerHandle hDisassembler, ref NativeSkipDataOptionValue optionValue)
{
var pOptionValue = IntPtr.Zero;
try {
pOptionValue = MarshalExtension.AllocHGlobal <NativeSkipDataOptionValue>();
Marshal.StructureToPtr(optionValue, pOptionValue, false);
// ...
//
// Throws an exception if the operation fails.
const NativeDisassemblerOptionType optionType = NativeDisassemblerOptionType.SetSkipDataConfig;
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, pOptionValue);
}
finally {
if (pOptionValue != IntPtr.Zero)
{
Marshal.FreeHGlobal(pOptionValue);
}
}
}
/// <summary>
/// Set Disassemble Mode Option.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="disassembleMode">
/// A hardware mode for the disassembler to use.
/// </param>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if the disassemble mode option could not be set.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassemble mode is invalid.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static void SetDisassembleModeOption(NativeDisassemblerHandle hDisassembler, NativeDisassembleMode disassembleMode)
{
// ...
//
// Throws an exception if the operation fails.
const NativeDisassemblerOptionType optionType = NativeDisassemblerOptionType.SetDisassembleMode;
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, (IntPtr)disassembleMode);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if (resultCode == NativeCapstoneResultCode.InvalidOption)
{
var detailMessage = $"An option ({nameof(optionType)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(optionType));
}
else
{
var detailMessage = $"A disassembler option ({optionType}) could not be set.";
throw new CapstoneException(detailMessage);
}
}
}
/// <summary>
/// Create a Disassembler.
/// </summary>
/// <param name="disassembleArchitecture">
/// The hardware architecture for the disassembler to use.
/// </param>
/// <param name="disassembleMode">
/// The hardware mode for the disassembler to use.
/// </param>
/// <returns>
/// A disassembler handle.
/// </returns>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if a disassembler could not be created.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassemble architecture is invalid, or if the disassemble mode is invalid or
/// unsupported by the disassemble architecture.
/// </exception>
/// <exception cref="System.OutOfMemoryException">
/// Thrown if sufficient memory cannot be allocated to perform the operation as a rare indication that the
/// system is under heavy load.
/// </exception>
internal static NativeDisassemblerHandle CreateDisassembler(DisassembleArchitecture disassembleArchitecture, NativeDisassembleMode disassembleMode)
{
var pDisassembler = IntPtr.Zero;
var resultCode = NativeCapstoneImport.CreateDisassembler(disassembleArchitecture, disassembleMode, ref pDisassembler);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if (resultCode == NativeCapstoneResultCode.UninitializedMemoryManagement)
{
const string detailMessage = "Memory Management is uninitialized.";
throw new CapstoneException(detailMessage);
}
else if (resultCode == NativeCapstoneResultCode.UnsupportedDisassembleArchitecture)
{
var detailMessage = $"A disassemble architecture ({disassembleArchitecture}) is invalid.";
throw new ArgumentException(detailMessage, nameof(disassembleArchitecture));
}
else if (resultCode == NativeCapstoneResultCode.UnsupportedDisassembleMode)
{
var detailMessage = $"A disassemble mode ({disassembleMode}) is invalid.";
throw new ArgumentException(detailMessage, nameof(disassembleMode));
}
else if (resultCode == NativeCapstoneResultCode.OutOfMemory)
{
const string detailMessage = "Sufficient memory could not be allocated.";
throw new OutOfMemoryException(detailMessage);
}
else
{
const string detailMessage = "A disassembler could not be created.";
throw new CapstoneException(detailMessage);
}
}
var hDisassembler = new NativeDisassemblerHandle(pDisassembler);
return(hDisassembler);
}
/// <summary>
/// Query an Option.
/// </summary>
/// <param name="queryOption">
/// An option to query.
/// </param>
/// <returns>
/// A boolean true if the option is supported. A boolean false otherwise.
/// </returns>
internal static bool Query(NativeQueryOption queryOption)
{
var isSupported = NativeCapstoneImport.Query(queryOption);
return(isSupported);
}
