1 files changed, 409 insertions, 0 deletions
diff --git a/shell/source/win32/shlxthandler/shlxthdl.cxx b/shell/source/win32/shlxthandler/shlxthdl.cxx
new file mode 100644
index 000000000..24ca14a44
--- /dev/null
+++ b/shell/source/win32/shlxthandler/shlxthdl.cxx
@@ -0,0 +1,409 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <config.hxx>
+#include <global.hxx>
+#include <shlxthdl.hxx>
+#include "classfactory.hxx"
+#include <registry.hxx>
+#include <fileextensions.hxx>
+#include <utilities.hxx>
+
+#include <string>
+#include <shlobj.h>
+
+#include <olectl.h> // declarations of DllRegisterServer/DllUnregisterServer
+
+// Module global
+
+long g_DllRefCnt = 0;
+HINSTANCE g_hModule = nullptr;
+
+namespace /* private */
+{
+    const wchar_t* const GUID_PLACEHOLDER       = L"{GUID}";
+    const wchar_t* const EXTENSION_PLACEHOLDER  = L"{EXT}";
+    const wchar_t* const FORWARDKEY_PLACEHOLDER = L"{FWDKEY}";
+
+    const wchar_t* const CLSID_ENTRY                         = L"CLSID\\{GUID}\\InProcServer32";
+    const wchar_t* const SHELLEX_IID_ENTRY                   = L"{EXT}\\shellex\\{GUID}";
+    const wchar_t* const SHELLEX_ENTRY                       = L"{EXT}\\shellex";
+    const wchar_t* const FORWARD_PROPSHEET_MYPROPSHEET_ENTRY = L"{FWDKEY}\\shellex\\PropertySheetHandlers\\MyPropSheet1";
+    const wchar_t* const FORWARD_PROPSHEET_ENTRY             = L"{FWDKEY}\\shellex\\PropertySheetHandlers";
+    const wchar_t* const FORWARD_SHELLEX_ENTRY               = L"{FWDKEY}\\shellex";
+
+    const wchar_t* const SHELL_EXTENSION_APPROVED_KEY_NAME   = L"Software\\Microsoft\\Windows\\CurrentVersion\\Shell Extensions\\Approved";
+
+
+    // "String Placeholder" ->
+    // "String Replacement"
+
+    void SubstitutePlaceholder(std::wstring& String, const std::wstring& Placeholder, const std::wstring& Replacement)
+    {
+        std::wstring::size_type idx = String.find(Placeholder);
+        std::wstring::size_type len = Placeholder.length();
+
+        while (std::wstring::npos != idx)
+        {
+            String.replace(idx, len, Replacement);
+            idx = String.find(Placeholder);
+        }
+    }
+
+    /* Make the registry entry
+       HKCR\CLSID\{GUID}
+            InProcServer32 = Path\shlxthdl.dll
+                ThreadingModel = Apartment
+    */
+    HRESULT RegisterComComponent(const wchar_t* FilePath, const CLSID& Guid)
+    {
+        std::wstring ClsidEntry = CLSID_ENTRY;
+        SubstitutePlaceholder(ClsidEntry, GUID_PLACEHOLDER, ClsidToString(Guid));
+
+        if (!SetRegistryKey(HKEY_CLASSES_ROOT, ClsidEntry.c_str(), L"", FilePath))
+            return E_FAIL;
+
+        if (!SetRegistryKey(HKEY_CLASSES_ROOT, ClsidEntry.c_str(), L"ThreadingModel", L"Apartment"))
+            return E_FAIL;
+
+        return S_OK;
+    }
+
+    HRESULT UnregisterComComponent(const CLSID& Guid)
+    {
+        std::wstring tmp = L"CLSID\\";
+        tmp += ClsidToString(Guid);
+        return DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str()) ? S_OK : E_FAIL;
+    }
+
+    HRESULT RegisterColumnHandler(const wchar_t* ModuleFileName)
+    {
+        if (FAILED(RegisterComComponent(ModuleFileName, CLSID_COLUMN_HANDLER)))
+            return E_FAIL;
+
+        std::wstring tmp = L"Folder\\shellex\\ColumnHandlers\\";
+        tmp += ClsidToString(CLSID_COLUMN_HANDLER);
+
+        return SetRegistryKey(
+            HKEY_CLASSES_ROOT,
+            tmp.c_str(),
+            L"",
+            COLUMN_HANDLER_DESCRIPTIVE_NAME) ? S_OK : E_FAIL;
+    }
+
+    HRESULT UnregisterColumnHandler()
+    {
+        std::wstring tmp = L"Folder\\shellex\\ColumnHandlers\\";
+        tmp += ClsidToString(CLSID_COLUMN_HANDLER);
+
+        if (!DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str()))
+            return E_FAIL;
+
+        return UnregisterComComponent(CLSID_COLUMN_HANDLER);
+    }
+
+    HRESULT RegisterInfotipHandler(const wchar_t* ModuleFileName)
+    {
+        if (FAILED(RegisterComComponent(ModuleFileName, CLSID_INFOTIP_HANDLER)))
+            return E_FAIL;
+
+        std::wstring iid = ClsidToString(IID_IQueryInfo);
+        std::wstring tmp;
+
+        for(size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            tmp = SHELLEX_IID_ENTRY;
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+            SubstitutePlaceholder(tmp, GUID_PLACEHOLDER, iid);
+
+            if (!SetRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str(), L"", ClsidToString(CLSID_INFOTIP_HANDLER).c_str()))
+                return E_FAIL;
+        }
+        return S_OK;
+    }
+
+    HRESULT UnregisterInfotipHandler()
+    {
+        std::wstring iid = ClsidToString(IID_IQueryInfo);
+        std::wstring tmp;
+
+        for (size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            tmp = SHELLEX_IID_ENTRY;
+
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+            SubstitutePlaceholder(tmp, GUID_PLACEHOLDER, iid);
+
+            DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str());
+
+            // if there are no further subkey below .ext\\shellex
+            // delete the whole subkey
+            tmp = SHELLEX_ENTRY;
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+
+            bool HasSubKeys = true;
+            if (HasSubkeysRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str(), HasSubKeys) && !HasSubKeys)
+                DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str());
+        }
+        return UnregisterComComponent(CLSID_INFOTIP_HANDLER);
+    }
+
+    HRESULT RegisterPropSheetHandler(const wchar_t* ModuleFileName)
+    {
+        std::wstring FwdKeyEntry;
+
+        if (FAILED(RegisterComComponent(ModuleFileName, CLSID_PROPERTYSHEET_HANDLER)))
+            return E_FAIL;
+
+        for (size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            FwdKeyEntry = FORWARD_PROPSHEET_MYPROPSHEET_ENTRY;
+            SubstitutePlaceholder(FwdKeyEntry, FORWARDKEY_PLACEHOLDER, OOFileExtensionTable[i].RegistryForwardKey);
+
+            if (!SetRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str(), L"", ClsidToString(CLSID_PROPERTYSHEET_HANDLER).c_str()))
+                return E_FAIL;
+        }
+        return S_OK;
+    }
+
+    HRESULT UnregisterPropSheetHandler()
+    {
+        std::wstring FwdKeyEntry;
+
+        for (size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            FwdKeyEntry = FORWARD_PROPSHEET_MYPROPSHEET_ENTRY;
+            SubstitutePlaceholder(FwdKeyEntry, FORWARDKEY_PLACEHOLDER, OOFileExtensionTable[i].RegistryForwardKey);
+
+            DeleteRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str());
+
+            FwdKeyEntry = FORWARD_PROPSHEET_ENTRY;
+            SubstitutePlaceholder(FwdKeyEntry, FORWARDKEY_PLACEHOLDER, OOFileExtensionTable[i].RegistryForwardKey);
+
+            bool HasSubKeys = true;
+            if (HasSubkeysRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str(), HasSubKeys) && !HasSubKeys)
+                DeleteRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str());
+
+            FwdKeyEntry = FORWARD_SHELLEX_ENTRY;
+            SubstitutePlaceholder(FwdKeyEntry, FORWARDKEY_PLACEHOLDER, OOFileExtensionTable[i].RegistryForwardKey);
+
+            HasSubKeys = true;
+            if (HasSubkeysRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str(), HasSubKeys) && !HasSubKeys)
+                DeleteRegistryKey(HKEY_CLASSES_ROOT, FwdKeyEntry.c_str());
+        }
+
+        return UnregisterComComponent(CLSID_PROPERTYSHEET_HANDLER);
+    }
+
+    HRESULT RegisterThumbviewerHandler(const wchar_t* ModuleFileName)
+    {
+        if (FAILED(RegisterComComponent(ModuleFileName, CLSID_THUMBVIEWER_HANDLER)))
+            return E_FAIL;
+
+        std::wstring iid = ClsidToString(IID_IExtractImage);
+        std::wstring tmp;
+
+        for(size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            tmp = SHELLEX_IID_ENTRY;
+
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+            SubstitutePlaceholder(tmp, GUID_PLACEHOLDER, iid);
+
+            if (!SetRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str(), L"", ClsidToString(CLSID_THUMBVIEWER_HANDLER).c_str()))
+                return E_FAIL;
+        }
+        return S_OK;
+    }
+
+    HRESULT UnregisterThumbviewerHandler()
+    {
+        std::wstring iid = ClsidToString(IID_IExtractImage);
+        std::wstring tmp;
+
+        for (size_t i = 0; i < OOFileExtensionTableSize; i++)
+        {
+            tmp = SHELLEX_IID_ENTRY;
+
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+            SubstitutePlaceholder(tmp, GUID_PLACEHOLDER, iid);
+
+            DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str());
+
+            // if there are no further subkey below .ext\\shellex
+            // delete the whole subkey
+            tmp = SHELLEX_ENTRY;
+            SubstitutePlaceholder(tmp, EXTENSION_PLACEHOLDER, OOFileExtensionTable[i].ExtensionU);
+
+            bool HasSubKeys = true;
+            if (HasSubkeysRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str(), HasSubKeys) && !HasSubKeys)
+                DeleteRegistryKey(HKEY_CLASSES_ROOT, tmp.c_str());
+        }
+        return UnregisterComComponent(CLSID_THUMBVIEWER_HANDLER);
+    }
+
+    /** Approving/Unapproving the Shell Extension, it's important under Windows
+        NT/2000/XP, see MSDN: Creating Shell Extension Handlers */
+    HRESULT ApproveShellExtension(const CLSID& clsid, const std::wstring& Description)
+    {
+        bool bRet = SetRegistryKey(
+            HKEY_LOCAL_MACHINE,
+            SHELL_EXTENSION_APPROVED_KEY_NAME,
+            ClsidToString(clsid).c_str(),
+            Description.c_str());
+
+        return bRet ? S_OK : E_FAIL;
+    }
+
+    HRESULT UnapproveShellExtension(const CLSID& Clsid)
+    {
+        HKEY hkey;
+
+        LONG rc = RegOpenKeyW(
+            HKEY_LOCAL_MACHINE,
+            SHELL_EXTENSION_APPROVED_KEY_NAME,
+            &hkey);
+
+        if (ERROR_SUCCESS == rc)
+        {
+            rc = RegDeleteValueW(
+                hkey,
+                ClsidToString(Clsid).c_str());
+
+            rc |= RegCloseKey(hkey);
+        }
+
+        return rc == ERROR_SUCCESS ? S_OK : E_FAIL;
+    }
+
+} // namespace /* private */
+
+
+// COM exports
+
+
+STDAPI DllRegisterServer()
+{
+    WCHAR ModuleFileName[MAX_PATH];
+
+    GetModuleFileNameW(
+        GetModuleHandleW(MODULE_NAME),
+        ModuleFileName,
+        sizeof(ModuleFileName)/sizeof(ModuleFileName[0]));
+
+    HRESULT hr = S_OK;
+
+    if (SUCCEEDED(RegisterColumnHandler(ModuleFileName)))
+        ApproveShellExtension(CLSID_COLUMN_HANDLER, COLUMN_HANDLER_DESCRIPTIVE_NAME);
+    else
+        hr = E_FAIL;
+
+    if (SUCCEEDED(RegisterInfotipHandler(ModuleFileName)))
+        ApproveShellExtension(CLSID_INFOTIP_HANDLER, INFOTIP_HANDLER_DESCRIPTIVE_NAME);
+    else
+        hr = E_FAIL;
+
+    if (SUCCEEDED(RegisterPropSheetHandler(ModuleFileName)))
+        ApproveShellExtension(CLSID_PROPERTYSHEET_HANDLER, PROPSHEET_HANDLER_DESCRIPTIVE_NAME);
+    else
+        hr = E_FAIL;
+
+    if (SUCCEEDED(RegisterThumbviewerHandler(ModuleFileName)))
+        ApproveShellExtension(CLSID_THUMBVIEWER_HANDLER, THUMBVIEWER_HANDLER_DESCRIPTIVE_NAME);
+    else
+        hr = E_FAIL;
+
+    // notify the Shell that something has changed
+    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, nullptr, nullptr);
+
+    return hr;
+}
+
+STDAPI DllUnregisterServer()
+{
+    HRESULT hr = S_OK;
+
+    if (FAILED(UnregisterColumnHandler()))
+        hr = E_FAIL;
+
+    UnapproveShellExtension(CLSID_COLUMN_HANDLER);
+
+    if (FAILED(UnregisterInfotipHandler()))
+        hr = E_FAIL;
+
+    UnapproveShellExtension(CLSID_INFOTIP_HANDLER);
+
+    if (FAILED(UnregisterPropSheetHandler()))
+        hr = E_FAIL;
+
+    UnapproveShellExtension(CLSID_PROPERTYSHEET_HANDLER);
+
+    if (FAILED(UnregisterThumbviewerHandler()))
+        hr = E_FAIL;
+
+    UnapproveShellExtension(CLSID_THUMBVIEWER_HANDLER);
+
+    // notify the Shell that something has changed
+    SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, nullptr, nullptr);
+
+    return hr;
+}
+
+STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID* ppv)
+{
+    *ppv = nullptr;
+
+    if ((rclsid != CLSID_INFOTIP_HANDLER) &&
+        (rclsid != CLSID_COLUMN_HANDLER) &&
+        (rclsid != CLSID_PROPERTYSHEET_HANDLER) &&
+        (rclsid != CLSID_THUMBVIEWER_HANDLER))
+        return CLASS_E_CLASSNOTAVAILABLE;
+
+    if ((riid != IID_IUnknown) && (riid != IID_IClassFactory))
+        return E_NOINTERFACE;
+
+    if ( rclsid == CLSID_INFOTIP_HANDLER )
+        OutputDebugStringFormatW( L"DllGetClassObject: Create CLSID_INFOTIP_HANDLER\n" );
+    else if ( rclsid == CLSID_COLUMN_HANDLER )
+        OutputDebugStringFormatW( L"DllGetClassObject: Create CLSID_COLUMN_HANDLER\n" );
+    else if ( rclsid == CLSID_PROPERTYSHEET_HANDLER )
+        OutputDebugStringFormatW( L"DllGetClassObject: Create CLSID_PROPERTYSHEET_HANDLER\n" );
+    else if ( rclsid == CLSID_THUMBVIEWER_HANDLER )
+        OutputDebugStringFormatW( L"DllGetClassObject: Create CLSID_THUMBVIEWER_HANDLER\n" );
+
+    IUnknown* pUnk = new CClassFactory(rclsid);
+    *ppv = pUnk;
+    return S_OK;
+}
+
+STDAPI DllCanUnloadNow()
+{
+    if (CClassFactory::IsLocked() || g_DllRefCnt > 0)
+        return S_FALSE;
+
+    return S_OK;
+}
+
+BOOL WINAPI DllMain(HINSTANCE hInst, ULONG /*ul_reason_for_call*/, LPVOID /*lpReserved*/)
+{
+    g_hModule = hInst;
+    return TRUE;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */