253 lines
8.3 KiB
C#
253 lines
8.3 KiB
C#
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// dnlib: See LICENSE.txt for more info
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using System;
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using dnlib.IO;
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namespace dnlib.PE {
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/// <summary>
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/// Represents the IMAGE_OPTIONAL_HEADER (32-bit) PE section
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/// </summary>
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public sealed class ImageOptionalHeader32 : FileSection, IImageOptionalHeader {
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readonly ushort magic;
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readonly byte majorLinkerVersion;
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readonly byte minorLinkerVersion;
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readonly uint sizeOfCode;
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readonly uint sizeOfInitializedData;
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readonly uint sizeOfUninitializedData;
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readonly RVA addressOfEntryPoint;
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readonly RVA baseOfCode;
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readonly RVA baseOfData;
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readonly uint imageBase;
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readonly uint sectionAlignment;
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readonly uint fileAlignment;
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readonly ushort majorOperatingSystemVersion;
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readonly ushort minorOperatingSystemVersion;
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readonly ushort majorImageVersion;
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readonly ushort minorImageVersion;
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readonly ushort majorSubsystemVersion;
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readonly ushort minorSubsystemVersion;
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readonly uint win32VersionValue;
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readonly uint sizeOfImage;
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readonly uint sizeOfHeaders;
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readonly uint checkSum;
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readonly Subsystem subsystem;
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readonly DllCharacteristics dllCharacteristics;
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readonly uint sizeOfStackReserve;
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readonly uint sizeOfStackCommit;
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readonly uint sizeOfHeapReserve;
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readonly uint sizeOfHeapCommit;
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readonly uint loaderFlags;
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readonly uint numberOfRvaAndSizes;
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readonly ImageDataDirectory[] dataDirectories = new ImageDataDirectory[16];
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.Magic field
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/// </summary>
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public ushort Magic => magic;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MajorLinkerVersion field
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/// </summary>
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public byte MajorLinkerVersion => majorLinkerVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MinorLinkerVersion field
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/// </summary>
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public byte MinorLinkerVersion => minorLinkerVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfCode field
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/// </summary>
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public uint SizeOfCode => sizeOfCode;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfInitializedData field
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/// </summary>
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public uint SizeOfInitializedData => sizeOfInitializedData;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfUninitializedData field
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/// </summary>
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public uint SizeOfUninitializedData => sizeOfUninitializedData;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.AddressOfEntryPoint field
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/// </summary>
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public RVA AddressOfEntryPoint => addressOfEntryPoint;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.BaseOfCode field
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/// </summary>
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public RVA BaseOfCode => baseOfCode;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.BaseOfData field
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/// </summary>
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public RVA BaseOfData => baseOfData;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.ImageBase field
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/// </summary>
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public ulong ImageBase => imageBase;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SectionAlignment field
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/// </summary>
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public uint SectionAlignment => sectionAlignment;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.FileAlignment field
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/// </summary>
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public uint FileAlignment => fileAlignment;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MajorOperatingSystemVersion field
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/// </summary>
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public ushort MajorOperatingSystemVersion => majorOperatingSystemVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MinorOperatingSystemVersion field
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/// </summary>
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public ushort MinorOperatingSystemVersion => minorOperatingSystemVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MajorImageVersion field
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/// </summary>
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public ushort MajorImageVersion => majorImageVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MinorImageVersion field
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/// </summary>
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public ushort MinorImageVersion => minorImageVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MajorSubsystemVersion field
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/// </summary>
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public ushort MajorSubsystemVersion => majorSubsystemVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.MinorSubsystemVersion field
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/// </summary>
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public ushort MinorSubsystemVersion => minorSubsystemVersion;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.Win32VersionValue field
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/// </summary>
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public uint Win32VersionValue => win32VersionValue;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfImage field
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/// </summary>
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public uint SizeOfImage => sizeOfImage;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfHeaders field
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/// </summary>
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public uint SizeOfHeaders => sizeOfHeaders;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.CheckSum field
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/// </summary>
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public uint CheckSum => checkSum;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.Subsystem field
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/// </summary>
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public Subsystem Subsystem => subsystem;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.DllCharacteristics field
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/// </summary>
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public DllCharacteristics DllCharacteristics => dllCharacteristics;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfStackReserve field
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/// </summary>
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public ulong SizeOfStackReserve => sizeOfStackReserve;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfStackCommit field
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/// </summary>
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public ulong SizeOfStackCommit => sizeOfStackCommit;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfHeapReserve field
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/// </summary>
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public ulong SizeOfHeapReserve => sizeOfHeapReserve;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.SizeOfHeapCommit field
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/// </summary>
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public ulong SizeOfHeapCommit => sizeOfHeapCommit;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.LoaderFlags field
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/// </summary>
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public uint LoaderFlags => loaderFlags;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.NumberOfRvaAndSizes field
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/// </summary>
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public uint NumberOfRvaAndSizes => numberOfRvaAndSizes;
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/// <summary>
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/// Returns the IMAGE_OPTIONAL_HEADER.DataDirectories field
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/// </summary>
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public ImageDataDirectory[] DataDirectories => dataDirectories;
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="reader">PE file reader pointing to the start of this section</param>
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/// <param name="totalSize">Total size of this optional header (from the file header)</param>
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/// <param name="verify">Verify section</param>
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/// <exception cref="BadImageFormatException">Thrown if verification fails</exception>
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public ImageOptionalHeader32(ref DataReader reader, uint totalSize, bool verify) {
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if (totalSize < 0x60)
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throw new BadImageFormatException("Invalid optional header size");
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if (verify && (ulong)reader.Position + totalSize > reader.Length)
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throw new BadImageFormatException("Invalid optional header size");
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SetStartOffset(ref reader);
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magic = reader.ReadUInt16();
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majorLinkerVersion = reader.ReadByte();
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minorLinkerVersion = reader.ReadByte();
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sizeOfCode = reader.ReadUInt32();
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sizeOfInitializedData = reader.ReadUInt32();
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sizeOfUninitializedData = reader.ReadUInt32();
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addressOfEntryPoint = (RVA)reader.ReadUInt32();
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baseOfCode = (RVA)reader.ReadUInt32();
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baseOfData = (RVA)reader.ReadUInt32();
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imageBase = reader.ReadUInt32();
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sectionAlignment = reader.ReadUInt32();
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fileAlignment = reader.ReadUInt32();
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majorOperatingSystemVersion = reader.ReadUInt16();
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minorOperatingSystemVersion = reader.ReadUInt16();
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majorImageVersion = reader.ReadUInt16();
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minorImageVersion = reader.ReadUInt16();
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majorSubsystemVersion = reader.ReadUInt16();
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minorSubsystemVersion = reader.ReadUInt16();
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win32VersionValue = reader.ReadUInt32();
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sizeOfImage = reader.ReadUInt32();
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sizeOfHeaders = reader.ReadUInt32();
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checkSum = reader.ReadUInt32();
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subsystem = (Subsystem)reader.ReadUInt16();
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dllCharacteristics = (DllCharacteristics)reader.ReadUInt16();
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sizeOfStackReserve = reader.ReadUInt32();
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sizeOfStackCommit = reader.ReadUInt32();
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sizeOfHeapReserve = reader.ReadUInt32();
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sizeOfHeapCommit = reader.ReadUInt32();
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loaderFlags = reader.ReadUInt32();
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numberOfRvaAndSizes = reader.ReadUInt32();
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for (int i = 0; i < dataDirectories.Length; i++) {
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uint len = reader.Position - (uint)startOffset;
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if (len + 8 <= totalSize)
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dataDirectories[i] = new ImageDataDirectory(ref reader, verify);
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else
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dataDirectories[i] = new ImageDataDirectory();
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}
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reader.Position = (uint)startOffset + totalSize;
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SetEndoffset(ref reader);
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}
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}
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}
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