138 lines
4.0 KiB
C#
138 lines
4.0 KiB
C#
/*
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Copyright (C) 2011-2015 de4dot@gmail.com
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This file is part of de4dot.
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de4dot is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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de4dot is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with de4dot. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Reflection;
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using System.Collections.Generic;
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using System.IO;
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using System.Xml;
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namespace AssemblyData {
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class AssemblyResolver {
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Dictionary<string, Assembly> assemblies = new Dictionary<string, Assembly>(StringComparer.Ordinal);
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Dictionary<string, bool> assemblySearchPathsDict = new Dictionary<string, bool>(StringComparer.OrdinalIgnoreCase);
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List<string> assemblySearchPaths = new List<string>();
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public AssemblyResolver() {
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AppDomain.CurrentDomain.AssemblyResolve += AssemblyResolve;
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}
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void AddAssemblySearchPath(string path) {
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if (assemblySearchPathsDict.ContainsKey(path))
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return;
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assemblySearchPathsDict[path] = true;
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assemblySearchPaths.Add(path);
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}
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Assembly Get(string assemblyFullName) {
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var asmName = new AssemblyName(assemblyFullName);
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Assembly assembly;
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if (assemblies.TryGetValue(asmName.FullName, out assembly))
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return assembly;
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if (assemblies.TryGetValue(asmName.Name, out assembly))
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return assembly;
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return null;
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}
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static string[] assemblyExtensions = new string[] { ".dll", ".exe" };
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Assembly AssemblyResolve(object sender, ResolveEventArgs args) {
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var assembly = Get(args.Name);
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if (assembly != null)
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return assembly;
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var asmName = new AssemblyName(args.Name);
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foreach (var path in assemblySearchPaths) {
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foreach (var ext in assemblyExtensions) {
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try {
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var filename = Path.Combine(path, asmName.Name + ext);
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if (!new FileInfo(filename).Exists)
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continue;
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AddConfigFile(filename + ".config");
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return AddAssembly(Assembly.LoadFile(filename));
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}
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catch (IOException) {
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}
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catch (BadImageFormatException) {
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}
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catch (ArgumentException) {
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}
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catch (NotSupportedException) {
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}
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catch (UnauthorizedAccessException) {
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}
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catch (System.Security.SecurityException) {
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}
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}
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}
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return null;
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}
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public Assembly Load(string filename) {
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AddConfigFile(filename + ".config");
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return AddAssembly(LoadFile(filename));
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}
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Assembly LoadFile(string filename) {
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try {
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return Assembly.LoadFrom(filename);
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}
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catch (FileLoadException) {
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// Here if eg. strong name signature validation failed and possibly other errors
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return Assembly.Load(File.ReadAllBytes(filename));
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}
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}
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Assembly AddAssembly(Assembly assembly) {
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var asmName = assembly.GetName();
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assemblies[asmName.FullName] = assembly;
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assemblies[asmName.Name] = assembly;
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return assembly;
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}
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void AddConfigFile(string configFilename) {
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var dirName = Utils.GetDirName(Utils.GetFullPath(configFilename));
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AddAssemblySearchPath(dirName);
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try {
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using (var xmlStream = new FileStream(configFilename, FileMode.Open, FileAccess.Read, FileShare.Read)) {
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var doc = new XmlDocument();
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doc.Load(XmlReader.Create(xmlStream));
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foreach (var tmp in doc.GetElementsByTagName("probing")) {
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var probingElem = tmp as XmlElement;
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if (probingElem == null)
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continue;
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var privatePath = probingElem.GetAttribute("privatePath");
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if (string.IsNullOrEmpty(privatePath))
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continue;
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foreach (var path in privatePath.Split(';'))
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AddAssemblySearchPath(Path.Combine(dirName, path));
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}
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}
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}
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catch (IOException) {
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}
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catch (XmlException) {
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}
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}
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}
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}
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