public static void WritePortableExecutable(PortableExecutableInfo peInfo, Stream stream)
{
var writer = new BinaryWriter(stream);
peInfo.WritePortableExecutable(writer);
writer.Close();
}
public static void RenameDependencyFileName(string filePath, string oldFileName, string newFileName)
{
if (oldFileName.Length != newFileName.Length)
{
throw new NotImplementedException(
"when renaming dependencies, old file name must have the same size as new file name");
}
var peInfo = new PortableExecutableInfo(filePath);
uint oldNameRVA = 0;
PESectionHeader header = null;
var sectionIndex = -1;
foreach (var descriptor in peInfo.ImportDirectory.Descriptors)
{
var nameRVA = descriptor.NameRVA;
header = peInfo.FindSectionByRVA(nameRVA);
if (header != null)
{
sectionIndex = peInfo.SectionHeaders.IndexOf(header);
var fileNameAddressInSection = PortableExecutableInfo.GetAddressInSectionFromRVA(header, nameRVA);
var fileName = ReadNullTerminatedAsciiString(peInfo.Sections[sectionIndex], fileNameAddressInSection);
if (fileName.Equals(oldFileName, StringComparison.InvariantCultureIgnoreCase))
{
oldNameRVA = nameRVA;
}
}
}
if (oldNameRVA > 0)
{
var newFileNameAsciiBytes = Encoding.ASCII.GetBytes(newFileName);
var addressInSection = PortableExecutableInfo.GetAddressInSectionFromRVA(header, oldNameRVA);
var section = peInfo.Sections[sectionIndex];
Buffer.BlockCopy(newFileNameAsciiBytes, 0, section, (int)addressInSection, newFileNameAsciiBytes.Length);
}
PortableExecutableInfo.WritePortableExecutable(peInfo, filePath);
}
