private static MethodInfo GetCustomActionMethod(
            Session session,
            string assemblyName,
            string className,
            string methodName)
        {
            Assembly  customActionAssembly;
            Type      customActionClass = null;
            Exception caughtEx          = null;

            try
            {
                //customActionAssembly = AppDomain.CurrentDomain.Load(assemblyName);
                var context = new CustomLoadContext();
                customActionAssembly = context.LoadFromFile(assemblyName);
                customActionClass    = customActionAssembly.GetType(className, true, true);
            }
            catch (IOException ex) { caughtEx = ex; }
            catch (BadImageFormatException ex) { caughtEx = ex; }
            catch (TypeLoadException ex) { caughtEx = ex; }
            catch (ReflectionTypeLoadException ex) { caughtEx = ex; }
            catch (SecurityException ex) { caughtEx = ex; }
            if (caughtEx != null)
            {
                session.Log("Error: could not load custom action class " + className + " from assembly: " + assemblyName);
                session.Log(caughtEx.ToString());
                return(null);
            }

            MethodInfo[] methods = customActionClass.GetTypeInfo().GetMethods(
                BindingFlags.Public | BindingFlags.Static);
            foreach (MethodInfo method in methods)
            {
                if (method.Name == methodName &&
                    CustomActionProxy.MethodHasCustomActionSignature(method))
                {
                    return(method);
                }
            }
            session.Log("Error: custom action method \"" + methodName +
                        "\" is missing or has the wrong signature.");
            return(null);
        }
Beispiel #2
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        private static IEmbeddedUI InstantiateUI(Session session, string uiClass)
        {
            int assemblySplit = uiClass.IndexOf('!');

            if (assemblySplit < 0)
            {
                session.Log("Error: invalid embedded UI assembly and class:" + uiClass);
                return(null);
            }

            string assemblyName = uiClass.Substring(0, assemblySplit);

            EmbeddedUIProxy.uiClass = uiClass.Substring(assemblySplit + 1);

            Assembly uiAssembly;

            try
            {
                var context = new CustomLoadContext();
                //uiAssembly = AppDomain.CurrentDomain.Load(assemblyName);
                uiAssembly = context.LoadFromFile(assemblyName);

                // This calls out to CustomActionProxy.DebugBreakEnabled() directly instead
                // of calling EmbeddedUIProxy.DebugBreakEnabled() because we don't compose a
                // class.method name for this breakpoint.
                if (CustomActionProxy.DebugBreakEnabled(new string[] { "EmbeddedUI" }))
                {
                    System.Diagnostics.Debugger.Launch();
                }

                var type = uiAssembly.GetType(EmbeddedUIProxy.uiClass);
                //return (IEmbeddedUI) uiAssembly.CreateInstance(EmbeddedUIProxy.uiClass);
                return((IEmbeddedUI)Activator.CreateInstance(type));
            }
            catch (Exception ex)
            {
                session.Log("Error: could not load embedded UI class " + EmbeddedUIProxy.uiClass + " from assembly: " + assemblyName);
                session.Log(ex.ToString());
                return(null);
            }
        }
Beispiel #3
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 private static bool DebugBreakEnabled(string method)
 {
     return(CustomActionProxy.DebugBreakEnabled(new string[] { method, EmbeddedUIProxy.uiClass + "." + method }));
 }
Beispiel #4
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        public static int InvokeCustomAction(int sessionHandle, string entryPoint,
                                             IntPtr remotingDelegatePtr)
        {
            Session    session = null;
            string     assemblyName, className, methodName;
            MethodInfo method;

            try
            {
                MsiRemoteInvoke remotingDelegate = (MsiRemoteInvoke)
                                                   Marshal.GetDelegateForFunctionPointer(
                    remotingDelegatePtr, typeof(MsiRemoteInvoke));
                RemotableNativeMethods.RemotingDelegate = remotingDelegate;

                sessionHandle = RemotableNativeMethods.MakeRemoteHandle(sessionHandle);
                session       = new Session((IntPtr)sessionHandle, false);
                if (String.IsNullOrEmpty(entryPoint))
                {
                    throw new ArgumentNullException("entryPoint");
                }

                if (!CustomActionProxy.FindEntryPoint(
                        session,
                        entryPoint,
                        out assemblyName,
                        out className,
                        out methodName))
                {
                    return((int)ActionResult.Failure);
                }
                session.Log("Calling custom action {0}!{1}.{2}", assemblyName, className, methodName);

                method = CustomActionProxy.GetCustomActionMethod(
                    session,
                    assemblyName,
                    className,
                    methodName);
                if (method == null)
                {
                    return((int)ActionResult.Failure);
                }
            }
            catch (Exception ex)
            {
                if (session != null)
                {
                    try
                    {
                        session.Log("Exception while loading custom action:");
                        session.Log(ex.ToString());
                    }
                    catch (Exception) { }
                }
                return((int)ActionResult.Failure);
            }

            try
            {
                // Set the current directory to the location of the extracted files.
                Environment.CurrentDirectory =
                    Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

                object[] args = new object[] { session };
                if (DebugBreakEnabled(new string[] { entryPoint, methodName }))
                {
                    string message = String.Format(
                        "To debug your custom action, attach to process ID {0} (0x{0:x}) and click OK; otherwise, click Cancel to fail the custom action.",
                        System.Diagnostics.Process.GetCurrentProcess().Id
                        );

                    MessageResult button = NativeMethods.MessageBox(
                        IntPtr.Zero,
                        message,
                        "Custom Action Breakpoint",
                        (int)MessageButtons.OKCancel | (int)MessageIcon.Asterisk | (int)(MessageBoxStyles.TopMost | MessageBoxStyles.ServiceNotification)
                        );

                    if (MessageResult.Cancel == button)
                    {
                        return((int)ActionResult.UserExit);
                    }
                }

                ActionResult result = (ActionResult)method.Invoke(null, args);
                session.Close();
                return((int)result);
            }
            catch (InstallCanceledException)
            {
                return((int)ActionResult.UserExit);
            }
            catch (Exception ex)
            {
                session.Log("Exception thrown by custom action:");
                session.Log(ex.ToString());
                return((int)ActionResult.Failure);
            }
        }
Beispiel #5
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 public static int InvokeCustomAction64(int sessionHandle, string entryPoint,
                                        long remotingDelegatePtr)
 {
     return(CustomActionProxy.InvokeCustomAction(sessionHandle, entryPoint, new IntPtr(remotingDelegatePtr)));
 }