/
DotNetCorePathFinder.cs
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/
DotNetCorePathFinder.cs
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// Copyright (c) 2018 Siegfried Pammer
//
// 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 System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using ICSharpCode.Decompiler.Util;
using LightJson.Serialization;
namespace ICSharpCode.Decompiler.Metadata
{
public class DotNetCorePathFinder
{
class DotNetCorePackageInfo
{
public readonly string Name;
public readonly string Version;
public readonly string Type;
public readonly string Path;
public readonly string[] RuntimeComponents;
public DotNetCorePackageInfo(string fullName, string type, string path, string[] runtimeComponents)
{
var parts = fullName.Split('/');
this.Name = parts[0];
this.Version = parts[1];
this.Type = type;
this.Path = path;
this.RuntimeComponents = runtimeComponents ?? Empty<string>.Array;
}
}
static readonly string[] LookupPaths = new string[] {
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".nuget", "packages")
};
readonly Dictionary<string, DotNetCorePackageInfo> packages;
ISet<string> packageBasePaths = new HashSet<string>(StringComparer.Ordinal);
readonly string assemblyName;
readonly string basePath;
readonly Version version;
readonly string dotnetBasePath = FindDotNetExeDirectory();
public DotNetCorePathFinder(string parentAssemblyFileName, string targetFrameworkId, Version version, ReferenceLoadInfo loadInfo = null)
{
this.assemblyName = Path.GetFileNameWithoutExtension(parentAssemblyFileName);
this.basePath = Path.GetDirectoryName(parentAssemblyFileName);
this.version = version;
var depsJsonFileName = Path.Combine(basePath, $"{assemblyName}.deps.json");
if (!File.Exists(depsJsonFileName)) {
loadInfo?.AddMessage(assemblyName, MessageKind.Warning, $"{assemblyName}.deps.json could not be found!");
return;
}
packages = LoadPackageInfos(depsJsonFileName, targetFrameworkId).ToDictionary(i => i.Name);
foreach (var path in LookupPaths) {
foreach (var pk in packages) {
foreach (var item in pk.Value.RuntimeComponents) {
var itemPath = Path.GetDirectoryName(item);
var fullPath = Path.Combine(path, pk.Value.Name, pk.Value.Version, itemPath).ToLowerInvariant();
if (Directory.Exists(fullPath))
packageBasePaths.Add(fullPath);
}
}
}
}
public string TryResolveDotNetCore(IAssemblyReference name)
{
foreach (var basePath in packageBasePaths) {
if (File.Exists(Path.Combine(basePath, name.Name + ".dll"))) {
return Path.Combine(basePath, name.Name + ".dll");
} else if (File.Exists(Path.Combine(basePath, name.Name + ".exe"))) {
return Path.Combine(basePath, name.Name + ".exe");
}
}
return FallbackToDotNetSharedDirectory(name, version);
}
static IEnumerable<DotNetCorePackageInfo> LoadPackageInfos(string depsJsonFileName, string targetFramework)
{
var dependencies = JsonReader.Parse(File.ReadAllText(depsJsonFileName));
var runtimeInfos = dependencies["targets"][targetFramework + "/"].AsJsonObject;
var libraries = dependencies["libraries"].AsJsonObject;
if (runtimeInfos == null || libraries == null)
yield break;
foreach (var library in libraries) {
var type = library.Value["type"].AsString;
var path = library.Value["path"].AsString;
var runtimeInfo = runtimeInfos[library.Key].AsJsonObject?["runtime"].AsJsonObject;
string[] components = new string[runtimeInfo?.Count ?? 0];
if (runtimeInfo != null) {
int i = 0;
foreach (var component in runtimeInfo) {
components[i] = component.Key;
i++;
}
}
yield return new DotNetCorePackageInfo(library.Key, type, path, components);
}
}
string FallbackToDotNetSharedDirectory(IAssemblyReference name, Version version)
{
if (dotnetBasePath == null) return null;
var basePath = Path.Combine(dotnetBasePath, "shared", "Microsoft.NETCore.App");
var closestVersion = GetClosestVersionFolder(basePath, version);
if (File.Exists(Path.Combine(basePath, closestVersion, name.Name + ".dll"))) {
return Path.Combine(basePath, closestVersion, name.Name + ".dll");
} else if (File.Exists(Path.Combine(basePath, closestVersion, name.Name + ".exe"))) {
return Path.Combine(basePath, closestVersion, name.Name + ".exe");
}
return null;
}
static string GetClosestVersionFolder(string basePath, Version version)
{
string result = null;
foreach (var folder in new DirectoryInfo(basePath).GetDirectories().Select(d => ConvertToVersion(d.Name)).Where(v => v.Item1 != null).OrderByDescending(v => v.Item1)) {
if (folder.Item1 >= version)
result = folder.Item2;
}
return result ?? version.ToString();
}
internal static (Version, string) ConvertToVersion(string name)
{
string RemoveTrailingVersionInfo()
{
string shortName = name;
int dashIndex = shortName.IndexOf('-');
if (dashIndex > 0) {
shortName = shortName.Remove(dashIndex);
}
return shortName;
}
try {
return (new Version(RemoveTrailingVersionInfo()), name);
} catch (Exception ex) {
Trace.TraceWarning(ex.ToString());
return (null, null);
}
}
static string FindDotNetExeDirectory()
{
string dotnetExeName = (Environment.OSVersion.Platform == PlatformID.Unix) ? "dotnet" : "dotnet.exe";
foreach (var item in Environment.GetEnvironmentVariable("PATH").Split(Path.PathSeparator)) {
try {
string fileName = Path.Combine(item, dotnetExeName);
if (!File.Exists(fileName))
continue;
if (Environment.OSVersion.Platform == PlatformID.Unix) {
if ((new FileInfo(fileName).Attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint) {
var sb = new StringBuilder();
realpath(fileName, sb);
fileName = sb.ToString();
if (!File.Exists(fileName))
continue;
}
}
return Path.GetDirectoryName(fileName);
} catch (ArgumentException) { }
}
return null;
}
[DllImport("libc")]
static extern void realpath(string path, StringBuilder resolvedPath);
}
}