94 lines
2.3 KiB
C#
94 lines
2.3 KiB
C#
/*
|
|
Copyright (C) 2011 de4dot@gmail.com
|
|
|
|
This file is part of de4dot.
|
|
|
|
de4dot is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
de4dot is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with de4dot. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
using System.IO;
|
|
using System.Text;
|
|
|
|
namespace de4dot.code.PE {
|
|
class Resources {
|
|
BinaryReader reader;
|
|
uint startOffset;
|
|
uint totalSize;
|
|
ResourceDirectory root;
|
|
|
|
public BinaryReader Reader {
|
|
get { return reader; }
|
|
}
|
|
|
|
public Resources(BinaryReader reader, uint startOffset, uint totalSize) {
|
|
this.reader = reader;
|
|
this.startOffset = startOffset;
|
|
this.totalSize = totalSize;
|
|
}
|
|
|
|
public ResourceDirectory getRoot() {
|
|
if (root != null)
|
|
return root;
|
|
return root = new ResourceDirectory("root", this, startOffset == 0 ? -1 : 0);
|
|
}
|
|
|
|
public bool isSizeAvailable(int offset, int size) {
|
|
if (offset < 0 || offset + size < offset)
|
|
return false;
|
|
return (uint)(offset + size) <= totalSize;
|
|
}
|
|
|
|
public bool isSizeAvailable(int size) {
|
|
return isSizeAvailable((int)(reader.BaseStream.Position - startOffset), size);
|
|
}
|
|
|
|
public bool seek(int offset) {
|
|
if (!isSizeAvailable(offset, 0))
|
|
return false;
|
|
reader.BaseStream.Position = startOffset + offset;
|
|
return true;
|
|
}
|
|
|
|
public ushort readUInt16() {
|
|
return reader.ReadUInt16();
|
|
}
|
|
|
|
public uint readUInt32() {
|
|
return reader.ReadUInt32();
|
|
}
|
|
|
|
public byte[] readBytes(int size) {
|
|
return reader.ReadBytes(size);
|
|
}
|
|
|
|
public string readString(int offset) {
|
|
if (!seek(offset))
|
|
return null;
|
|
if (!isSizeAvailable(2))
|
|
return null;
|
|
int size = readUInt16();
|
|
int sizeInBytes = size * 2;
|
|
if (!isSizeAvailable(sizeInBytes))
|
|
return null;
|
|
var stringData = readBytes(sizeInBytes);
|
|
try {
|
|
return Encoding.Unicode.GetString(stringData);
|
|
}
|
|
catch {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
}
|