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//
// Image.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2011 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using Mono;
using Mono.Cecil.Cil;
using Mono.Cecil.Metadata;
using RVA = System.UInt32;
namespace Mono.Cecil.PE {
sealed class Image {
public ModuleKind Kind;
public TargetRuntime Runtime;
public TargetArchitecture Architecture;
public ModuleCharacteristics Characteristics;
public string FileName;
public Section [] Sections;
public Section MetadataSection;
public uint EntryPointToken;
public ModuleAttributes Attributes;
public DataDirectory Debug;
public DataDirectory Resources;
public DataDirectory StrongName;
public StringHeap StringHeap;
public BlobHeap BlobHeap;
public UserStringHeap UserStringHeap;
public GuidHeap GuidHeap;
public TableHeap TableHeap;
readonly int [] coded_index_sizes = new int [13];
readonly Func<Table, int> counter;
public Image ()
{
counter = GetTableLength;
}
public bool HasTable (Table table)
{
return GetTableLength (table) > 0;
}
public int GetTableLength (Table table)
{
return (int) TableHeap [table].Length;
}
public int GetTableIndexSize (Table table)
{
return GetTableLength (table) < 65536 ? 2 : 4;
}
public int GetCodedIndexSize (CodedIndex coded_index)
{
var index = (int) coded_index;
var size = coded_index_sizes [index];
if (size != 0)
return size;
return coded_index_sizes [index] = coded_index.GetSize (counter);
}
public uint ResolveVirtualAddress (RVA rva)
{
var section = GetSectionAtVirtualAddress (rva);
if (section == null)
throw new ArgumentOutOfRangeException ();
return ResolveVirtualAddressInSection (rva, section);
}
public uint ResolveVirtualAddressInSection (RVA rva, Section section)
{
return rva + section.PointerToRawData - section.VirtualAddress;
}
public Section GetSection (string name)
{
var sections = this.Sections;
for (int i = 0; i < sections.Length; i++) {
var section = sections [i];
if (section.Name == name)
return section;
}
return null;
}
public Section GetSectionAtVirtualAddress (RVA rva)
{
var sections = this.Sections;
for (int i = 0; i < sections.Length; i++) {
var section = sections [i];
if (rva >= section.VirtualAddress && rva < section.VirtualAddress + section.SizeOfRawData)
return section;
}
return null;
}
public ImageDebugDirectory GetDebugHeader (out byte [] header)
{
var section = GetSectionAtVirtualAddress (Debug.VirtualAddress);
var buffer = new ByteBuffer (section.Data);
buffer.position = (int) (Debug.VirtualAddress - section.VirtualAddress);
var directory = new ImageDebugDirectory {
Characteristics = buffer.ReadInt32 (),
TimeDateStamp = buffer.ReadInt32 (),
MajorVersion = buffer.ReadInt16 (),
MinorVersion = buffer.ReadInt16 (),
Type = buffer.ReadInt32 (),
SizeOfData = buffer.ReadInt32 (),
AddressOfRawData = buffer.ReadInt32 (),
PointerToRawData = buffer.ReadInt32 (),
};
buffer.position = (int) (directory.PointerToRawData - section.PointerToRawData);
header = new byte [directory.SizeOfData];
Buffer.BlockCopy (buffer.buffer, buffer.position, header, 0, header.Length);
return directory;
}
}
}
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