mirror of
https://github.com/ShareX/ShareX.git
synced 2024-07-02 21:20:28 +12:00
2c35af0592
Merge commits from Greenshot up through bd71f47e95a46642fe6a83bdd76cc4d2a7eed7c2. Some bug fixes, but mostly structural cleanup.
1012 lines
37 KiB
C#
1012 lines
37 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2015 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
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*
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* This program 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 1 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using GreenshotPlugin;
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using System;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Runtime.Remoting;
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using System.Runtime.Remoting.Messaging;
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using System.Runtime.Remoting.Proxies;
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using System.Windows.Forms;
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namespace Greenshot.Interop
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{
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/// <summary>
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/// Wraps a late-bound COM server.
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/// </summary>
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public sealed class COMWrapper : RealProxy, IDisposable, IRemotingTypeInfo
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{
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private const int MK_E_UNAVAILABLE = -2147221021;
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private const int CO_E_CLASSSTRING = -2147221005;
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public const int RPC_E_CALL_REJECTED = unchecked((int)0x80010001);
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public const int RPC_E_FAIL = unchecked((int)0x80004005);
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#region Private Data
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/// <summary>
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/// Holds reference to the actual COM object which is wrapped by this proxy
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/// </summary>
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private object _COMObject;
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/// <summary>
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/// Type of the COM object, set on constructor after getting the COM reference
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/// </summary>
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private Type _COMType;
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/// <summary>
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/// The type of which method calls are intercepted and executed on the COM object.
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/// </summary>
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private Type _interceptType;
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/// <summary>
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/// The humanly readable target name
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/// </summary>
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private string _targetName;
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#endregion Private Data
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[DllImport("ole32.dll")]
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private static extern int ProgIDFromCLSID([In] ref Guid clsid, [MarshalAs(UnmanagedType.LPWStr)] out string lplpszProgID);
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// Converts failure HRESULTs to exceptions:
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[DllImport("oleaut32", PreserveSig = false)]
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private static extern void GetActiveObject(ref Guid rclsid, IntPtr pvReserved, [MarshalAs(UnmanagedType.IUnknown)] out Object ppunk);
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#region Construction
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/// <summary>
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/// Gets a COM object and returns the transparent proxy which intercepts all calls to the object
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/// </summary>
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/// <param name="T">Interface which defines the method and properties to intercept</param>
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/// <returns>Transparent proxy to the real proxy for the object</returns>
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/// <remarks>The <paramref name="type"/> must be an interface decorated with the <see cref="ComProgIdAttribute"/>attribute.</remarks>
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public static T GetInstance<T>()
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{
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Type type = typeof(T);
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if (null == type)
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{
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throw new ArgumentNullException("type");
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}
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if (!type.IsInterface)
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{
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throw new ArgumentException("The specified type must be an interface.", "type");
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}
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ComProgIdAttribute progIDAttribute = ComProgIdAttribute.GetAttribute(type);
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if (null == progIDAttribute || null == progIDAttribute.Value || 0 == progIDAttribute.Value.Length)
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{
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throw new ArgumentException("The specified type must define a ComProgId attribute.", "type");
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}
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string progId = progIDAttribute.Value;
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object comObject = null;
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// Convert from clsid to Prog ID, if needed
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if (progId.StartsWith("clsid:"))
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{
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Guid guid = new Guid(progId.Substring(6));
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int result = ProgIDFromCLSID(ref guid, out progId);
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if (result != 0)
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{
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// Restore progId, as it's overwritten
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progId = progIDAttribute.Value;
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try
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{
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GetActiveObject(ref guid, IntPtr.Zero, out comObject);
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}
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catch (Exception)
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{
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LOG.WarnFormat("Error {0} getting instance for class id {1}", result, progIDAttribute.Value);
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}
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if (comObject == null)
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{
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LOG.WarnFormat("Error {0} getting progId {1}", result, progIDAttribute.Value);
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}
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}
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else
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{
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LOG.InfoFormat("Mapped {0} to progId {1}", progIDAttribute.Value, progId);
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}
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}
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if (comObject == null)
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{
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try
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{
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comObject = Marshal.GetActiveObject(progId);
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}
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catch (COMException comE)
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{
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if (comE.ErrorCode == MK_E_UNAVAILABLE)
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{
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LOG.DebugFormat("No current instance of {0} object available.", progId);
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}
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else if (comE.ErrorCode == CO_E_CLASSSTRING)
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{
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LOG.WarnFormat("Unknown progId {0}", progId);
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}
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else
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{
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LOG.Warn("Error getting active object for " + progIDAttribute.Value, comE);
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}
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}
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catch (Exception e)
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{
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LOG.Warn("Error getting active object for " + progIDAttribute.Value, e);
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}
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}
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if (comObject != null)
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{
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if (comObject is IDispatch)
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{
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COMWrapper wrapper = new COMWrapper(comObject, type, progIDAttribute.Value);
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return (T)wrapper.GetTransparentProxy();
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}
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else
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{
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return (T)comObject;
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}
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}
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return default(T);
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}
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/// <summary>
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/// A simple create instance, doesn't create a wrapper!!
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/// </summary>
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/// <returns>T</returns>
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public static T CreateInstance<T>()
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{
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Type type = typeof(T);
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if (null == type)
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{
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throw new ArgumentNullException("type");
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}
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if (!type.IsInterface)
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{
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throw new ArgumentException("The specified type must be an interface.", "type");
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}
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ComProgIdAttribute progIDAttribute = ComProgIdAttribute.GetAttribute(type);
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if (null == progIDAttribute || null == progIDAttribute.Value || 0 == progIDAttribute.Value.Length)
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{
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throw new ArgumentException("The specified type must define a ComProgId attribute.", "type");
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}
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string progId = progIDAttribute.Value;
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Type comType = null;
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if (progId.StartsWith("clsid:"))
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{
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Guid guid = new Guid(progId.Substring(6));
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try
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{
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comType = Type.GetTypeFromCLSID(guid);
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}
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catch (Exception ex)
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{
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LOG.WarnFormat("Error {1} type for {0}", progId, ex.Message);
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}
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}
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else
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{
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try
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{
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comType = Type.GetTypeFromProgID(progId, true);
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}
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catch (Exception ex)
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{
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LOG.WarnFormat("Error {1} type for {0}", progId, ex.Message);
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}
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}
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object comObject = null;
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if (comType != null)
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{
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try
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{
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comObject = Activator.CreateInstance(comType);
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if (comObject != null)
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{
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LOG.DebugFormat("Created new instance of {0} object.", progId);
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}
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}
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catch (Exception e)
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{
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LOG.WarnFormat("Error {1} creating object for {0}", progId, e.Message);
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throw;
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}
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}
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if (comObject != null)
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{
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return (T)comObject;
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}
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return default(T);
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}
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/// <summary>
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/// Gets or creates a COM object and returns the transparent proxy which intercepts all calls to the object
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/// The ComProgId can be a normal ComProgId or a GUID prefixed with "clsid:"
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/// </summary>
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/// <param name="type">Interface which defines the method and properties to intercept</param>
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/// <returns>Transparent proxy to the real proxy for the object</returns>
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/// <remarks>The <paramref name="type"/> must be an interface decorated with the <see cref="ComProgIdAttribute"/>attribute.</remarks>
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public static T GetOrCreateInstance<T>()
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{
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Type type = typeof(T);
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if (null == type)
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{
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throw new ArgumentNullException("type");
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}
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if (!type.IsInterface)
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{
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throw new ArgumentException("The specified type must be an interface.", "type");
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}
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ComProgIdAttribute progIDAttribute = ComProgIdAttribute.GetAttribute(type);
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if (null == progIDAttribute || null == progIDAttribute.Value || 0 == progIDAttribute.Value.Length)
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{
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throw new ArgumentException("The specified type must define a ComProgId attribute.", "type");
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}
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object comObject = null;
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Type comType = null;
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string progId = progIDAttribute.Value;
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Guid guid = Guid.Empty;
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// Convert from clsid to Prog ID, if needed
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if (progId.StartsWith("clsid:"))
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{
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guid = new Guid(progId.Substring(6));
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int result = ProgIDFromCLSID(ref guid, out progId);
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if (result != 0)
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{
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// Restore progId, as it's overwritten
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progId = progIDAttribute.Value;
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try
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{
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GetActiveObject(ref guid, IntPtr.Zero, out comObject);
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}
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catch (Exception)
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{
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LOG.WarnFormat("Error {0} getting instance for class id {1}", result, progIDAttribute.Value);
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}
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if (comObject == null)
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{
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LOG.WarnFormat("Error {0} getting progId {1}", result, progIDAttribute.Value);
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}
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}
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else
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{
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LOG.InfoFormat("Mapped {0} to progId {1}", progIDAttribute.Value, progId);
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}
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}
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if (comObject == null)
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{
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if (!progId.StartsWith("clsid:"))
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{
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try
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{
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comObject = Marshal.GetActiveObject(progId);
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}
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catch (COMException comE)
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{
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if (comE.ErrorCode == MK_E_UNAVAILABLE)
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{
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LOG.DebugFormat("No current instance of {0} object available.", progId);
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}
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else if (comE.ErrorCode == CO_E_CLASSSTRING)
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{
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LOG.WarnFormat("Unknown progId {0} (application not installed)", progId);
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return default(T);
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}
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else
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{
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LOG.Warn("Error getting active object for " + progId, comE);
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}
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}
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catch (Exception e)
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{
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LOG.Warn("Error getting active object for " + progId, e);
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}
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}
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}
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// Did we get the current instance? If not, try to create a new
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if (comObject == null)
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{
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try
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{
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comType = Type.GetTypeFromProgID(progId, true);
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}
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catch (Exception ex)
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{
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if (Guid.Empty != guid)
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{
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comType = Type.GetTypeFromCLSID(guid);
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}
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else
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{
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LOG.Warn("Error type for " + progId, ex);
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}
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}
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if (comType != null)
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{
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try
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{
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comObject = Activator.CreateInstance(comType);
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if (comObject != null)
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{
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LOG.DebugFormat("Created new instance of {0} object.", progId);
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}
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}
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catch (Exception e)
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{
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LOG.Warn("Error creating object for " + progId, e);
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}
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}
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}
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if (comObject != null)
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{
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if (comObject is IDispatch)
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{
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COMWrapper wrapper = new COMWrapper(comObject, type, progIDAttribute.Value);
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return (T)wrapper.GetTransparentProxy();
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}
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else
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{
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return (T)comObject;
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}
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}
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return default(T);
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}
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/// <summary>
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/// Wrap a com object as COMWrapper
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/// </summary>
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/// <param name="comObject">An object to intercept</param>
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/// <param name="T">Interface which defines the method and properties to intercept</param>
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/// <returns>Transparent proxy to the real proxy for the object</returns>
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public static T Wrap<T>(object comObject)
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{
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Type type = typeof(T);
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if (null == comObject)
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{
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throw new ArgumentNullException("comObject");
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}
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if (null == type)
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{
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throw new ArgumentNullException("type");
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}
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COMWrapper wrapper = new COMWrapper(comObject, type, type.FullName);
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return (T)wrapper.GetTransparentProxy();
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}
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/// <summary>
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/// Wrap an object and return the transparent proxy which intercepts all calls to the object
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/// </summary>
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/// <param name="comObject">An object to intercept</param>
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/// <param name="type">Interface which defines the method and properties to intercept</param>
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/// <returns>Transparent proxy to the real proxy for the object</returns>
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private static object Wrap(object comObject, Type type, string targetName)
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{
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if (null == comObject)
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{
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throw new ArgumentNullException("comObject");
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}
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if (null == type)
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{
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throw new ArgumentNullException("type");
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}
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COMWrapper wrapper = new COMWrapper(comObject, type, targetName);
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return wrapper.GetTransparentProxy();
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}
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="comObject">
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/// The COM object to wrap.
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/// </param>
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/// <param name="type">
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/// The interface type to impersonate.
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/// </param>
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private COMWrapper(object comObject, Type type, string targetName)
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: base(type)
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{
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_COMObject = comObject;
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_COMType = comObject.GetType();
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_interceptType = type;
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_targetName = targetName;
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}
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#endregion Construction
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#region Clean up
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/// <summary>
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/// If <see cref="Dispose"/> is not called, we need to make
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/// sure that the COM object is still cleaned up.
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/// </summary>
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~COMWrapper()
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{
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LOG.DebugFormat("Finalize {0}", _interceptType);
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Dispose(false);
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}
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/// <summary>
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/// Cleans up the COM object.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// Release the COM reference
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/// </summary>
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/// <param name="disposing">
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/// <see langword="true"/> if this was called from the
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/// <see cref="IDisposable"/> interface.
|
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/// </param>
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private void Dispose(bool disposing)
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{
|
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if (null != _COMObject)
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{
|
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LOG.DebugFormat("Disposing {0}", _interceptType);
|
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if (Marshal.IsComObject(_COMObject))
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{
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try
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{
|
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int count;
|
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do
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{
|
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count = Marshal.ReleaseComObject(_COMObject);
|
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LOG.DebugFormat("RCW count for {0} now is {1}", _interceptType, count);
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} while (count > 0);
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}
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catch (Exception ex)
|
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{
|
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LOG.WarnFormat("Problem releasing COM object {0}", _COMType);
|
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LOG.Warn("Error: ", ex);
|
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}
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}
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else
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{
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LOG.WarnFormat("{0} is not a COM object", _COMType);
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}
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_COMObject = null;
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}
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}
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#endregion Clean up
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|
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#region Object methods
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/// <summary>
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/// Returns a string representing the wrapped object.
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/// </summary>
|
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/// <returns>
|
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/// The full name of the intercepted type.
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/// </returns>
|
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public override string ToString()
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|
{
|
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return _interceptType.FullName;
|
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}
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|
|
/// <summary>
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|
/// Returns the hash code of the wrapped object.
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|
/// </summary>
|
|
/// <returns>
|
|
/// The hash code of the wrapped object.
|
|
/// </returns>
|
|
public override int GetHashCode()
|
|
{
|
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return _COMObject.GetHashCode();
|
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}
|
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|
|
/// <summary>
|
|
/// Compares this object to another.
|
|
/// </summary>
|
|
/// <param name="value">
|
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/// The value to compare to.
|
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/// </param>
|
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/// <returns>
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/// <see langword="true"/> if the objects are equal.
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/// </returns>
|
|
public override bool Equals(object value)
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|
{
|
|
if (null != value && RemotingServices.IsTransparentProxy(value))
|
|
{
|
|
COMWrapper wrapper = RemotingServices.GetRealProxy(value) as COMWrapper;
|
|
if (null != wrapper)
|
|
{
|
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return _COMObject == wrapper._COMObject;
|
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}
|
|
}
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|
return base.Equals(value);
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}
|
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|
|
/// <summary>
|
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/// Returns the base type for a reference type.
|
|
/// </summary>
|
|
/// <param name="byRefType">
|
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/// The reference type.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The base value type.
|
|
/// </returns>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// <paramref name="byRefType"/> is <see langword="null"/>.
|
|
/// </exception>
|
|
private static Type GetByValType(Type byRefType)
|
|
{
|
|
if (null == byRefType)
|
|
{
|
|
throw new ArgumentNullException("byRefType");
|
|
}
|
|
|
|
if (byRefType.IsByRef)
|
|
{
|
|
string name = byRefType.FullName;
|
|
name = name.Substring(0, name.Length - 1);
|
|
byRefType = byRefType.Assembly.GetType(name, true);
|
|
}
|
|
|
|
return byRefType;
|
|
}
|
|
|
|
#endregion Object methods
|
|
|
|
/// <summary>
|
|
/// Use this static method to cast a wrapped proxy to a new wrapper proxy of the supplied type.
|
|
/// In English, use this to cast you base "COM" interface to a specialized interface.
|
|
/// E.G. Outlook Item -> MailItem
|
|
/// </summary>
|
|
/// <typeparam name="T">the type you want to cast to</typeparam>
|
|
/// <param name="wrapperProxy">The wrapper interface, e.g. something you got back from calling GetItem</param>
|
|
/// <returns>A new wrapper proxy for the specified type</returns>
|
|
public static T Cast<T>(object wrapperProxy)
|
|
{
|
|
if (wrapperProxy == null)
|
|
{
|
|
return default(T);
|
|
}
|
|
|
|
Type newType = typeof(T);
|
|
COMWrapper oldWrapper = RemotingServices.GetRealProxy(wrapperProxy) as COMWrapper;
|
|
if (oldWrapper == null)
|
|
{
|
|
throw new ArgumentException("wrapper proxy was no COMWrapper");
|
|
}
|
|
if (oldWrapper._interceptType.IsAssignableFrom(newType))
|
|
{
|
|
COMWrapper newWrapper = new COMWrapper(oldWrapper._COMObject, newType, oldWrapper._targetName);
|
|
return (T)newWrapper.GetTransparentProxy();
|
|
}
|
|
throw new InvalidCastException(string.Format("{0} is not assignable from {1}", oldWrapper._interceptType, newType));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns the "com" type of the wrapperproxy, making it possible to perform reflection on it.
|
|
/// </summary>
|
|
/// <param name="wrapperProxy">wrapperProxy to get the type from</param>
|
|
/// <returns>Type</returns>
|
|
public static Type GetUnderlyingTypeForWrapper(object wrapperProxy)
|
|
{
|
|
Type returnType = null;
|
|
COMWrapper wrapper = RemotingServices.GetRealProxy(wrapperProxy) as COMWrapper;
|
|
if (wrapper != null)
|
|
{
|
|
IDispatch dispatch = wrapper._COMObject as IDispatch;
|
|
if (dispatch != null)
|
|
{
|
|
int result = dispatch.GetTypeInfo(0, 0, out returnType);
|
|
if (result != 0)
|
|
{
|
|
LOG.DebugFormat("GetTypeInfo : 0x{0} ({1})", result.ToString("X"), result);
|
|
}
|
|
}
|
|
}
|
|
return returnType;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Return the Type of a IDispatch
|
|
/// </summary>
|
|
/// <param name="dispatch">IDispatch to get the type object for</param>
|
|
/// <returns>Type of the IDispatch</returns>
|
|
public static Type GetUnderlyingType(IDispatch dispatch)
|
|
{
|
|
Type returnType = null;
|
|
if (dispatch != null)
|
|
{
|
|
int result = dispatch.GetTypeInfo(0, 0, out returnType);
|
|
if (result != 0)
|
|
{
|
|
LOG.DebugFormat("GetTypeInfo : 0x{0} ({1})", result.ToString("X"), result);
|
|
}
|
|
}
|
|
return returnType;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Dump the Type-Information for the Type to the log, this uses reflection
|
|
/// </summary>
|
|
/// <param name="type">Type to inspect</param>
|
|
public static void DumpTypeInfo(Type type)
|
|
{
|
|
LOG.InfoFormat("Type information for Type with name: {0}", type.Name);
|
|
try
|
|
{
|
|
foreach (MemberInfo memberInfo in type.GetMembers())
|
|
{
|
|
LOG.InfoFormat("Member: {0};", memberInfo);
|
|
}
|
|
}
|
|
catch (Exception memberException)
|
|
{
|
|
LOG.Error(memberException);
|
|
}
|
|
try
|
|
{
|
|
foreach (PropertyInfo propertyInfo in type.GetProperties())
|
|
{
|
|
LOG.InfoFormat("Property: {0};", propertyInfo);
|
|
}
|
|
}
|
|
catch (Exception propertyException)
|
|
{
|
|
LOG.Error(propertyException);
|
|
}
|
|
try
|
|
{
|
|
foreach (FieldInfo fieldInfo in type.GetFields())
|
|
{
|
|
LOG.InfoFormat("Field: {0};", fieldInfo);
|
|
}
|
|
}
|
|
catch (Exception fieldException)
|
|
{
|
|
LOG.Error(fieldException);
|
|
}
|
|
LOG.InfoFormat("Type information end.");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Intercept method calls
|
|
/// </summary>
|
|
/// <param name="myMessage">
|
|
/// Contains information about the method being called
|
|
/// </param>
|
|
/// <returns>
|
|
/// A <see cref="ReturnMessage"/>.
|
|
/// </returns>
|
|
public override IMessage Invoke(IMessage myMessage)
|
|
{
|
|
IMethodCallMessage callMessage = myMessage as IMethodCallMessage;
|
|
if (null == callMessage)
|
|
{
|
|
LOG.DebugFormat("Message type not implemented: {0}", myMessage.GetType());
|
|
return null;
|
|
}
|
|
|
|
MethodInfo method = callMessage.MethodBase as MethodInfo;
|
|
if (null == method)
|
|
{
|
|
LOG.DebugFormat("Unrecognized Invoke call: {0}", callMessage.MethodBase);
|
|
return null;
|
|
}
|
|
|
|
object returnValue = null;
|
|
object[] outArgs = null;
|
|
int outArgsCount = 0;
|
|
|
|
string methodName = method.Name;
|
|
Type returnType = method.ReturnType;
|
|
BindingFlags flags = BindingFlags.InvokeMethod;
|
|
int argCount = callMessage.ArgCount;
|
|
|
|
ParameterModifier[] argModifiers = null;
|
|
ParameterInfo[] parameters = null;
|
|
|
|
if ("Dispose" == methodName && 0 == argCount && typeof(void) == returnType)
|
|
{
|
|
Dispose();
|
|
}
|
|
else if ("ToString" == methodName && 0 == argCount && typeof(string) == returnType)
|
|
{
|
|
returnValue = ToString();
|
|
}
|
|
else if ("GetType" == methodName && 0 == argCount && typeof(Type) == returnType)
|
|
{
|
|
returnValue = _interceptType;
|
|
}
|
|
else if ("GetHashCode" == methodName && 0 == argCount && typeof(int) == returnType)
|
|
{
|
|
returnValue = GetHashCode();
|
|
}
|
|
else if ("Equals" == methodName && 1 == argCount && typeof(bool) == returnType)
|
|
{
|
|
returnValue = Equals(callMessage.Args[0]);
|
|
}
|
|
else if (1 == argCount && typeof(void) == returnType && (methodName.StartsWith("add_") || methodName.StartsWith("remove_")))
|
|
{
|
|
bool removeHandler = methodName.StartsWith("remove_");
|
|
methodName = methodName.Substring(removeHandler ? 7 : 4);
|
|
|
|
Delegate handler = callMessage.InArgs[0] as Delegate;
|
|
if (null == handler)
|
|
{
|
|
return new ReturnMessage(new ArgumentNullException("handler"), callMessage);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
var invokeObject = _COMObject;
|
|
var invokeType = _COMType;
|
|
|
|
object[] args;
|
|
ParameterInfo parameter;
|
|
if (methodName.StartsWith("get_"))
|
|
{
|
|
// Property Get
|
|
methodName = methodName.Substring(4);
|
|
flags = BindingFlags.GetProperty;
|
|
args = callMessage.InArgs;
|
|
}
|
|
else if (methodName.StartsWith("set_"))
|
|
{
|
|
// Property Set
|
|
methodName = methodName.Substring(4);
|
|
flags = BindingFlags.SetProperty;
|
|
args = callMessage.InArgs;
|
|
}
|
|
else
|
|
{
|
|
args = callMessage.Args;
|
|
if (null != args && 0 != args.Length)
|
|
{
|
|
// Modifiers for ref / out parameters
|
|
argModifiers = new ParameterModifier[1];
|
|
argModifiers[0] = new ParameterModifier(args.Length);
|
|
|
|
parameters = method.GetParameters();
|
|
for (int i = 0; i < parameters.Length; i++)
|
|
{
|
|
parameter = parameters[i];
|
|
if (parameter.IsOut || parameter.ParameterType.IsByRef)
|
|
{
|
|
argModifiers[0][i] = true;
|
|
outArgsCount++;
|
|
}
|
|
}
|
|
|
|
if (0 == outArgsCount)
|
|
{
|
|
argModifiers = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Un-wrap wrapped COM objects before passing to the method
|
|
Type byValType;
|
|
COMWrapper wrapper;
|
|
COMWrapper[] originalArgs;
|
|
if (null == args || 0 == args.Length)
|
|
{
|
|
originalArgs = null;
|
|
}
|
|
else
|
|
{
|
|
originalArgs = new COMWrapper[args.Length];
|
|
for (int i = 0; i < args.Length; i++)
|
|
{
|
|
if (null != args[i] && RemotingServices.IsTransparentProxy(args[i]))
|
|
{
|
|
wrapper = RemotingServices.GetRealProxy(args[i]) as COMWrapper;
|
|
if (null != wrapper)
|
|
{
|
|
originalArgs[i] = wrapper;
|
|
args[i] = wrapper._COMObject;
|
|
}
|
|
}
|
|
else if (0 != outArgsCount && argModifiers[0][i])
|
|
{
|
|
byValType = GetByValType(parameters[i].ParameterType);
|
|
if (byValType.IsInterface)
|
|
{
|
|
// If we're passing a COM object by reference, and
|
|
// the parameter is null, we need to pass a
|
|
// DispatchWrapper to avoid a type mismatch exception.
|
|
if (null == args[i])
|
|
{
|
|
args[i] = new DispatchWrapper(null);
|
|
}
|
|
}
|
|
else if (typeof(decimal) == byValType)
|
|
{
|
|
// If we're passing a decimal value by reference,
|
|
// we need to pass a CurrencyWrapper to avoid a
|
|
// type mismatch exception.
|
|
// http://support.microsoft.com/?kbid=837378
|
|
args[i] = new CurrencyWrapper(args[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
do
|
|
{
|
|
try
|
|
{
|
|
returnValue = invokeType.InvokeMember(methodName, flags, null, invokeObject, args, argModifiers, null, null);
|
|
break;
|
|
}
|
|
catch (InvalidComObjectException icoEx)
|
|
{
|
|
// Should assist BUG-1616 and others
|
|
LOG.WarnFormat("COM object {0} has been separated from its underlying RCW cannot be used. The COM object was released while it was still in use on another thread.", _interceptType.FullName);
|
|
return new ReturnMessage(icoEx, callMessage);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
// Test for rejected
|
|
COMException comEx = ex as COMException;
|
|
if (comEx == null)
|
|
{
|
|
comEx = ex.InnerException as COMException;
|
|
}
|
|
if (comEx != null && (comEx.ErrorCode == RPC_E_CALL_REJECTED || comEx.ErrorCode == RPC_E_FAIL))
|
|
{
|
|
string destinationName = _targetName;
|
|
// Try to find a "catchy" name for the rejecting application
|
|
if (destinationName != null && destinationName.Contains("."))
|
|
{
|
|
destinationName = destinationName.Substring(0, destinationName.IndexOf("."));
|
|
}
|
|
if (destinationName == null)
|
|
{
|
|
destinationName = _interceptType.FullName;
|
|
}
|
|
DialogResult result = MessageBox.Show(string.Format("The destination {0} rejected Greenshot access, probably a dialog is open. Close the dialog and try again.",
|
|
destinationName), "Greenshot access rejected", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation);
|
|
if (result == DialogResult.OK)
|
|
{
|
|
continue;
|
|
}
|
|
}
|
|
// Not rejected OR pressed cancel
|
|
return new ReturnMessage(ex, callMessage);
|
|
}
|
|
} while (true);
|
|
|
|
// Handle enum and interface return types
|
|
if (null != returnValue)
|
|
{
|
|
if (returnType.IsInterface)
|
|
{
|
|
// Wrap the returned value in an intercepting COM wrapper
|
|
if (Marshal.IsComObject(returnValue))
|
|
{
|
|
returnValue = Wrap(returnValue, returnType, _targetName);
|
|
}
|
|
}
|
|
else if (returnType.IsEnum)
|
|
{
|
|
// Convert to proper Enum type
|
|
returnValue = Enum.Parse(returnType, returnValue.ToString());
|
|
}
|
|
}
|
|
|
|
// Handle out args
|
|
if (0 != outArgsCount)
|
|
{
|
|
outArgs = new object[args.Length];
|
|
for (int i = 0; i < parameters.Length; i++)
|
|
{
|
|
if (!argModifiers[0][i])
|
|
{
|
|
continue;
|
|
}
|
|
|
|
var arg = args[i];
|
|
if (null == arg)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
parameter = parameters[i];
|
|
wrapper = null;
|
|
|
|
byValType = GetByValType(parameter.ParameterType);
|
|
if (typeof(decimal) == byValType)
|
|
{
|
|
if (arg is CurrencyWrapper)
|
|
{
|
|
arg = ((CurrencyWrapper)arg).WrappedObject;
|
|
}
|
|
}
|
|
else if (byValType.IsEnum)
|
|
{
|
|
arg = Enum.Parse(byValType, arg.ToString());
|
|
}
|
|
else if (byValType.IsInterface)
|
|
{
|
|
if (Marshal.IsComObject(arg))
|
|
{
|
|
wrapper = originalArgs[i];
|
|
if (null != wrapper && wrapper._COMObject != arg)
|
|
{
|
|
wrapper.Dispose();
|
|
wrapper = null;
|
|
}
|
|
|
|
if (null == wrapper)
|
|
{
|
|
wrapper = new COMWrapper(arg, byValType, _targetName);
|
|
}
|
|
arg = wrapper.GetTransparentProxy();
|
|
}
|
|
}
|
|
outArgs[i] = arg;
|
|
}
|
|
}
|
|
}
|
|
|
|
return new ReturnMessage(returnValue, outArgs, outArgsCount, callMessage.LogicalCallContext, callMessage);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Implementation for the interface IRemotingTypeInfo
|
|
/// This makes it possible to cast the COMWrapper
|
|
/// </summary>
|
|
/// <param name="toType">Type to cast to</param>
|
|
/// <param name="o">object to cast</param>
|
|
/// <returns></returns>
|
|
public bool CanCastTo(Type toType, object o)
|
|
{
|
|
bool returnValue = _interceptType.IsAssignableFrom(toType);
|
|
return returnValue;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Implementation for the interface IRemotingTypeInfo
|
|
/// </summary>
|
|
public string TypeName
|
|
{
|
|
get
|
|
{
|
|
throw new NotSupportedException();
|
|
}
|
|
set
|
|
{
|
|
throw new NotSupportedException();
|
|
}
|
|
}
|
|
}
|
|
} |