2020-12-16 10:47:34 +10:00
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// Copyright © 2020 The CefSharp Authors. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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using System;
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using System.IO;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace CefSharp
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{
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/// <summary>
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/// CLR Module Initializer
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/// Used to load libcef.dll if required
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/// </summary>
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public static class Initializer
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{
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//TODO: Internal debugging only for now, needs improving if users are going to
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//get meaningful data from this.
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internal static IntPtr? LibCefHandle { get; private set; }
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internal static bool LibCefLoaded { get; private set; }
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internal static string LibCefPath { get; private set; }
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internal static string BrowserSubProcessPath { get; private set; }
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2021-01-12 10:47:09 +10:00
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internal static string BrowserSubProcessCorePath { get; private set; }
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2020-12-16 10:47:34 +10:00
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[ModuleInitializer]
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internal static void ModuleInitializer()
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{
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2021-04-01 16:54:19 +10:00
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string currentFolder;
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var executingAssembly = Assembly.GetEntryAssembly();
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//The GetEntryAssembly method can return null when a managed assembly has been loaded from an unmanaged application.
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//https://docs.microsoft.com/en-us/dotnet/api/system.reflection.assembly.getentryassembly?view=net-5.0
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if (executingAssembly == null)
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{
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currentFolder = Path.GetDirectoryName(typeof(Initializer).Assembly.Location);
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}
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else
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{
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currentFolder = Path.GetDirectoryName(executingAssembly.Location);
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}
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2021-05-01 16:11:51 +10:00
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//In .NET 5.0 and later versions, for bundled assemblies, Assembly.Location is an empty string.
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//https://docs.microsoft.com/en-us/dotnet/api/system.reflection.assembly.location?view=net-5.0
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//Which results in Path.GetDirectoryName returning null, in that case use use AppContext.BaseDirectory
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//otherwise Path.Combine will throw an exception.
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//In .NET 5.0 and later versions, for bundled assemblies, AppContext.BaseDirectory returns the containing directory of the host executable.
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//https://docs.microsoft.com/en-us/dotnet/api/system.appcontext.basedirectory?view=net-5.0
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2021-08-25 09:58:03 +10:00
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if(string.IsNullOrEmpty(currentFolder))
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{
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currentFolder = AppContext.BaseDirectory;
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}
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var libCefPath = Path.Combine(currentFolder, "libcef.dll");
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2020-12-16 10:47:34 +10:00
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if (File.Exists(libCefPath))
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{
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//We didn't load CEF, it was already next to our calling assembly, the
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//framework should load it correctly on it's own
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LibCefPath = libCefPath;
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LibCefLoaded = false;
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}
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else
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{
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2021-04-01 09:27:48 +02:00
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var arch = RuntimeInformation.ProcessArchitecture.ToString().ToLowerInvariant();
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var archFolder = $"runtimes\\win-{arch}\\native";
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libCefPath = Path.Combine(currentFolder, archFolder, "libcef.dll");
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if (File.Exists(libCefPath))
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{
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LibCefLoaded = NativeLibrary.TryLoad(libCefPath, out IntPtr handle);
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if (LibCefLoaded)
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{
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BrowserSubProcessPath = Path.Combine(currentFolder, archFolder, "CefSharp.BrowserSubprocess.exe");
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BrowserSubProcessCorePath = Path.Combine(currentFolder, archFolder, "CefSharp.BrowserSubprocess.Core.dll");
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2020-12-16 10:47:34 +10:00
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LibCefPath = libCefPath;
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LibCefHandle = handle;
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}
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}
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else
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{
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LibCefPath = libCefPath;
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LibCefLoaded = false;
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}
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}
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}
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}
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}
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