Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/Configuration/GacUtil.cs

@@ -0,0 +1,79 @@
+//------------------------------------------------------------------------------
+// <copyright file="GacUtil.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.Configuration {
+    using System.Web.Configuration;
+    using System.Runtime.InteropServices;
+    using System.Security.Permissions;
+
+    /*
+    class for installing ASP.BrowserCapabilitiesFactory into gac
+    */
+    internal sealed class GacUtil : IGac {
+
+
+        [SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
+        public void GacInstall(string assemblyPath) {
+
+#if !FEATURE_PAL
+            IAssemblyCache ac = null;
+            int hr = NativeMethods.CreateAssemblyCache(out ac, 0);
+            if (0 == hr) hr = ac.InstallAssembly(0, assemblyPath, IntPtr.Zero);
+#else // !FEATURE_PAL
+            int hr = -1;
+            try
+            {
+                Process gacutilprocess = new System.Diagnostics.Process();
+                if (gacutilprocess != null)
+                {
+                    gacutilprocess.StartInfo.CreateNoWindow = true;
+#if PLATFORM_UNIX
+                    gacutilprocess.StartInfo.FileName = "gacutil";
+#else
+                    gacutilprocess.StartInfo.FileName = "gacutil.exe";
+#endif
+                    gacutilprocess.StartInfo.UseShellExecute = false;
+                    gacutilprocess.StartInfo.Arguments = "/i " + assemblyPath;
+                    gacutilprocess.Start();
+                    while (!gacutilprocess.HasExited)
+                    {
+                        Thread.Sleep(250);
+                    }
+                    hr = gacutilprocess.ExitCode;
+                }
+            }
+            catch (Exception)
+            {
+                hr = -1;
+            }
+#endif // FEATURE_PAL
+
+            if (0 != hr) {
+                throw new Exception(SR.GetString(SR.Failed_gac_install));
+            }
+        }
+
+        [SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
+        public bool GacUnInstall(string assemblyName) {
+            IAssemblyCache ac = null;
+            uint position = 0;
+            int hr = NativeMethods.CreateAssemblyCache(out ac, 0);
+
+            if (0 == hr) {
+                hr = ac.UninstallAssembly(0, assemblyName, IntPtr.Zero, out position);
+                if (position == 3 /*IASSEMBLYCACHE_UNINSTALL_DISPOSITION_ALREADY_UNINSTALLED*/) {
+                    return false;
+                }
+            }
+
+            if (0 != hr) {
+                throw new Exception(SR.GetString(SR.Failed_gac_uninstall));
+            }
+
+            return true;
+        }
+    }
+}