public ResourceWriter(Image img, Section rsrc, MemoryBinaryWriter writer)
{
m_img = img;
m_rsrc = rsrc;
m_writer = writer;
m_dataEntries = new ArrayList();
m_stringEntries = new ArrayList();
}
public ImageWriter(MetadataWriter writer, AssemblyKind kind, BinaryWriter bw)
{
m_mdWriter = writer;
m_img = writer.GetMetadataRoot().GetImage();
m_kind = kind;
m_binaryWriter = bw;
m_textWriter = new MemoryBinaryWriter();
m_textWriter.BaseStream.Position = 80;
m_relocWriter = new MemoryBinaryWriter();
}
public void Initialize()
{
Image img = m_img;
ResourceWriter resWriter = null;
uint sectAlign = img.PEOptionalHeader.NTSpecificFields.SectionAlignment;
uint fileAlign = img.PEOptionalHeader.NTSpecificFields.FileAlignment;
m_textSect = img.TextSection;
foreach (Section s in img.Sections)
{
if (s.Name == Section.Relocs)
{
m_relocSect = s;
}
else if (s.Name == Section.Resources)
{
m_rsrcSect = s;
m_rsrcWriter = new MemoryBinaryWriter();
resWriter = new ResourceWriter(img, m_rsrcSect, m_rsrcWriter);
resWriter.Write();
}
}
// size computations, fields setting, etc.
uint nbSects = (uint)img.Sections.Count;
img.PEFileHeader.NumberOfSections = (ushort)nbSects;
// build the reloc section data
uint relocSize = 12;
m_relocWriter.Write((uint)0);
m_relocWriter.Write(relocSize);
m_relocWriter.Write((ushort)0);
m_relocWriter.Write((ushort)0);
m_textSect.VirtualSize = (uint)m_textWriter.BaseStream.Length;
m_relocSect.VirtualSize = (uint)m_relocWriter.BaseStream.Length;
if (m_rsrcSect != null)
{
m_rsrcSect.VirtualSize = (uint)m_rsrcWriter.BaseStream.Length;
}
// start counting before sections headers
// section start + section header sixe * number of sections
uint headersEnd = 0x178 + 0x28 * nbSects;
uint fileOffset = headersEnd;
uint sectOffset = sectAlign;
uint imageSize = 0;
foreach (Section sect in img.Sections)
{
fileOffset = GetAligned(fileOffset, fileAlign);
sectOffset = GetAligned(sectOffset, sectAlign);
sect.PointerToRawData = new RVA(fileOffset);
sect.VirtualAddress = new RVA(sectOffset);
sect.SizeOfRawData = GetAligned(sect.VirtualSize, fileAlign);
fileOffset += sect.SizeOfRawData;
sectOffset += sect.SizeOfRawData;
imageSize += GetAligned(sect.SizeOfRawData, sectAlign);
}
if (m_textSect.VirtualAddress.Value != 0x2000)
{
throw new ImageFormatException("Wrong RVA for .text section");
}
if (resWriter != null)
{
resWriter.Patch();
}
img.PEOptionalHeader.StandardFields.CodeSize = GetAligned(
m_textSect.SizeOfRawData, fileAlign);
img.PEOptionalHeader.StandardFields.InitializedDataSize = m_textSect.SizeOfRawData;
if (m_rsrcSect != null)
{
img.PEOptionalHeader.StandardFields.InitializedDataSize += m_rsrcSect.SizeOfRawData;
}
img.PEOptionalHeader.StandardFields.BaseOfCode = m_textSect.VirtualAddress;
img.PEOptionalHeader.StandardFields.BaseOfData = m_relocSect.VirtualAddress;
imageSize += headersEnd;
img.PEOptionalHeader.NTSpecificFields.ImageSize = GetAligned(imageSize, sectAlign);
img.PEOptionalHeader.DataDirectories.BaseRelocationTable = new DataDirectory(
m_relocSect.VirtualAddress, m_relocSect.VirtualSize);
if (m_rsrcSect != null)
{
img.PEOptionalHeader.DataDirectories.ResourceTable = new DataDirectory(
m_rsrcSect.VirtualAddress, (uint)m_rsrcWriter.BaseStream.Length);
}
if (m_kind == AssemblyKind.Dll)
{
img.PEFileHeader.Characteristics = ImageCharacteristics.CILOnlyDll;
img.HintNameTable.RuntimeMain = HintNameTable.RuntimeMainDll;
img.PEOptionalHeader.NTSpecificFields.DLLFlags = 0x400;
}
else
{
img.PEFileHeader.Characteristics = ImageCharacteristics.CILOnlyExe;
img.HintNameTable.RuntimeMain = HintNameTable.RuntimeMainExe;
}
switch (m_kind)
{
case AssemblyKind.Dll:
case AssemblyKind.Console:
img.PEOptionalHeader.NTSpecificFields.SubSystem = SubSystem.WindowsCui;
break;
case AssemblyKind.Windows:
img.PEOptionalHeader.NTSpecificFields.SubSystem = SubSystem.WindowsGui;
break;
}
RVA importTable = new RVA(img.TextSection.VirtualAddress + m_mdWriter.ImportTablePosition);
img.PEOptionalHeader.DataDirectories.ImportTable = new DataDirectory(importTable, 0x57);
img.ImportTable.ImportLookupTable = new RVA((uint)importTable + 0x28);
img.ImportLookupTable.HintNameRVA = img.ImportAddressTable.HintNameTableRVA =
new RVA((uint)img.ImportTable.ImportLookupTable + 0x14);
img.ImportTable.Name = new RVA((uint)img.ImportLookupTable.HintNameRVA + 0xe);
}
void WriteSection(Section sect, MemoryBinaryWriter sectWriter)
{
sectWriter.MemoryStream.WriteTo(m_binaryWriter.BaseStream);
m_binaryWriter.Write(new byte [
sect.SizeOfRawData - sectWriter.BaseStream.Length]);
}
public void Write(MemoryBinaryWriter writer)
{
writer.MemoryStream.WriteTo(this.BaseStream);
}