129 lines
4.0 KiB
C#
129 lines
4.0 KiB
C#
/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy 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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dnSpy 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 dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Diagnostics;
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using System.IO;
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using dnlib.DotNet;
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namespace dnSpy.Roslyn.Compiler {
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enum FrameworkKind {
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Unknown,
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DotNetFramework2,
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DotNetFramework4,
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DotNet,
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Unity2,
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Unity4,
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}
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static class FrameworkDetector {
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public static FrameworkKind GetFrameworkKind(ModuleDef module) {
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var corlib = module.CorLibTypes.AssemblyRef;
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var moduleLocation = module.Location;
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if (File.Exists(moduleLocation) && File.Exists(Path.Combine(Path.GetDirectoryName(moduleLocation)!, "UnityEngine.dll"))) {
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Debug.Assert(corlib.Version.Major == 2 || corlib.Version.Major == 4);
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return corlib.Version.Major == 2 ? FrameworkKind.Unity2 : FrameworkKind.Unity4;
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}
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var info = TryGetTargetFrameworkAttribute(module.Assembly);
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if (info.framework is not null) {
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if (info.framework == ".NETFramework") {
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if (info.version.StartsWith("2.") || info.version.StartsWith("3."))
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return FrameworkKind.DotNetFramework2;
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if (info.version.StartsWith("4."))
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return FrameworkKind.DotNetFramework4;
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Debug.Fail("Unknown .NET Framework version");
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return FrameworkKind.Unknown;
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}
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if (info.framework == ".NETCoreApp")
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return FrameworkKind.DotNet;
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return FrameworkKind.Unknown;
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}
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switch (corlib.FullName) {
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case "mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089":
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return FrameworkKind.DotNetFramework2;
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case "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089":
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return FrameworkKind.DotNetFramework4;
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}
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switch (corlib.Name) {
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case "System.Runtime":
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if (corlib.Version >= new Version(4, 1, 0, 0))
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return FrameworkKind.DotNet;
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break;
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}
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return FrameworkKind.Unknown;
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}
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static (string framework, string version, string? profile) TryGetTargetFrameworkAttribute(AssemblyDef asm) {
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var ca = asm?.CustomAttributes.Find("System.Runtime.Versioning.TargetFrameworkAttribute");
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if (ca is null)
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return default;
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if (ca.ConstructorArguments.Count != 1)
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return default;
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var arg = ca.ConstructorArguments[0];
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if (arg.Type.GetElementType() != ElementType.String)
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return default;
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var s = arg.Value as UTF8String;
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if (UTF8String.IsNullOrEmpty(s))
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return default;
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string attrString = s;
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// See corclr/src/mscorlib/src/System/Runtime/Versioning/BinaryCompatibility.cs
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var values = attrString.Split(new char[] { ',' });
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if (values.Length < 2 || values.Length > 3)
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return default;
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var framework = values[0].Trim();
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if (framework.Length == 0)
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return default;
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string? versionStr = null;
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string? profile = null;
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for (int i = 1; i < values.Length; i++) {
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var kvp = values[i].Split('=');
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if (kvp.Length != 2)
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return default;
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var key = kvp[0].Trim();
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var value = kvp[1].Trim();
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if (key.Equals("Version", StringComparison.OrdinalIgnoreCase)) {
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if (value.StartsWith("v", StringComparison.OrdinalIgnoreCase))
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value = value.Substring(1);
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versionStr = value;
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if (!Version.TryParse(value, out var version))
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return default;
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}
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else if (key.Equals("Profile", StringComparison.OrdinalIgnoreCase)) {
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if (!string.IsNullOrEmpty(value))
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profile = value;
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}
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}
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if (versionStr is null || versionStr.Length == 0)
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return default;
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return (framework, versionStr, profile);
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}
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}
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}
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