/// <summary>
/// Loads PE section that contains the specified <paramref name="relativeVirtualAddress"/> into memory
/// and returns a memory block that starts at <paramref name="relativeVirtualAddress"/> and ends at the end of the containing section.
/// </summary>
/// <param name="relativeVirtualAddress">Relative Virtual Address of the data to read.</param>
/// <returns>
/// An empty block if <paramref name="relativeVirtualAddress"/> doesn't represent a location in any of the PE sections of this PE image.
/// </returns>
/// <exception cref="BadImageFormatException">The PE headers contain invalid data.</exception>
/// <exception cref="IOException">IO error while reading from the underlying stream.</exception>
/// <exception cref="InvalidOperationException">PE image not available.</exception>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="relativeVirtualAddress"/> is negative.</exception>
public PEMemoryBlock GetSectionData(int relativeVirtualAddress)
{
if (relativeVirtualAddress < 0)
{
Throw.ArgumentOutOfRange(nameof(relativeVirtualAddress));
}
int sectionIndex = PEHeaders.GetContainingSectionIndex(relativeVirtualAddress);
if (sectionIndex < 0)
{
return(default(PEMemoryBlock));
}
var block = GetPESectionBlock(sectionIndex);
int relativeOffset = relativeVirtualAddress - PEHeaders.SectionHeaders[sectionIndex].VirtualAddress;
if (relativeOffset > block.Size)
{
return(default(PEMemoryBlock));
}
return(new PEMemoryBlock(block, relativeOffset));
}
/// <summary>
/// Loads PE section that contains the specified <paramref name="relativeVirtualAddress"/> into memory
/// and returns a memory block that starts at <paramref name="relativeVirtualAddress"/> and ends at the end of the containing section.
/// </summary>
/// <param name="relativeVirtualAddress">Relative Virtual Address of the data to read.</param>
/// <returns>
/// An empty block if <paramref name="relativeVirtualAddress"/> doesn't represent a location in any of the PE sections of this PE image.
/// </returns>
/// <exception cref="BadImageFormatException">The PE headers contain invalid data.</exception>
public PEMemoryBlock GetSectionData(int relativeVirtualAddress)
{
var sectionIndex = PEHeaders.GetContainingSectionIndex(relativeVirtualAddress);
if (sectionIndex < 0)
{
return(default(PEMemoryBlock));
}
int relativeOffset = relativeVirtualAddress - PEHeaders.SectionHeaders[sectionIndex].VirtualAddress;
int size = PEHeaders.SectionHeaders[sectionIndex].VirtualSize - relativeOffset;
AbstractMemoryBlock block;
if (_peImage != null)
{
block = GetPESectionBlock(sectionIndex);
}
else
{
block = GetEntireImageBlock();
relativeOffset += PEHeaders.SectionHeaders[sectionIndex].PointerToRawData;
}
return(new PEMemoryBlock(block, relativeOffset));
}
