1 files changed, 180 insertions, 0 deletions
diff --git a/shell/source/win32/spsupp/spsuppServ.cxx b/shell/source/win32/spsupp/spsuppServ.cxx
new file mode 100644
index 000000000..c5b10e53b
--- /dev/null
+++ b/shell/source/win32/spsupp/spsuppServ.cxx
@@ -0,0 +1,180 @@
+/* -*- 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/.
+*/
+
+// Include MIDL-generated file
+#if defined __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wextra-tokens"
+    // "#endif !_MIDL_USE_GUIDDEF_" in midl-generated code
+#endif
+#include <spsupp_i.c>
+#if defined __clang__
+#pragma clang diagnostic pop
+#endif
+
+#include <memory>
+#include <olectl.h>
+#include <wchar.h>
+#include <spsuppServ.hpp>
+#include <spsuppClassFactory.hpp>
+#include <COMOpenDocuments.hpp>
+#include <registrar.hpp>
+
+#include <shlwapi.h> // declaration of DllInstall
+
+namespace
+{
+HANDLE g_hModule;
+
+HMODULE GetHModule() { return static_cast<HMODULE>(g_hModule); }
+} // namespace
+
+ITypeLib* GetTypeLib()
+{
+    typedef std::unique_ptr<ITypeLib, void(*)(IUnknown* p)> ITypeLibGuard;
+    static ITypeLibGuard s_aITypeLibGuard = [] {
+        ITypeLibGuard aITypeLibGuard(nullptr, [](IUnknown* p) { if (p) p->Release(); });
+        wchar_t szFile[MAX_PATH];
+        if (GetModuleFileNameW(GetHModule(), szFile, MAX_PATH) == 0)
+            return aITypeLibGuard;
+        ITypeLib* pTypeLib;
+        if (FAILED(LoadTypeLib(szFile, &pTypeLib)))
+            return aITypeLibGuard;
+        aITypeLibGuard.reset(pTypeLib);
+        return aITypeLibGuard;
+    }();
+    return s_aITypeLibGuard.get();
+}
+
+const wchar_t* GetHelperExe()
+{
+    static wchar_t* s_sPath = []() -> wchar_t* {
+        static wchar_t sPath[MAX_PATH];
+        if (GetModuleFileNameW(GetHModule(), sPath, MAX_PATH) == 0)
+            return nullptr;
+        wchar_t* pSlashPos = wcsrchr(sPath, L'\\');
+        if (pSlashPos == nullptr)
+            return nullptr;
+        wcscpy(pSlashPos + 1, L"spsupp_helper.exe");
+        return sPath;
+    }();
+    return s_sPath;
+}
+
+BOOL APIENTRY DllMain( HANDLE hinstDLL,
+                       DWORD  fdwReason,
+                       LPVOID /*lpvReserved*/ )
+{
+    switch (fdwReason)
+    {
+        case DLL_PROCESS_ATTACH:
+            g_hModule = hinstDLL;
+            break;
+
+        case DLL_THREAD_ATTACH:
+        case DLL_THREAD_DETACH:
+        case DLL_PROCESS_DETACH:
+            break;
+    }
+    return TRUE;
+}
+
+namespace {
+    // {F1924D0C-9B35-4A46-BCDE-CFEF2CE67A17}
+    static const IID CLSID_spsupp =
+    { 0xf1924d0c, 0x9b35, 0x4a46, { 0xbc, 0xde, 0xcf, 0xef, 0x2c, 0xe6, 0x7a, 0x17 } };
+}
+
+STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppvOut)
+{
+    *ppvOut = nullptr;
+    if (IsEqualIID(rclsid, CLSID_spsupp))
+    {
+       ClassFactory *pCf = new ClassFactory;
+       HRESULT hr = pCf->QueryInterface(riid, ppvOut);
+       pCf->Release();
+       return hr;
+    }
+    return CLASS_E_CLASSNOTAVAILABLE;
+}
+
+STDAPI DllCanUnloadNow(void)
+{
+    if (ClassFactory::GetLockCount() == 0 &&
+        ClassFactory::GetObjectCount() == 0 &&
+        COMOpenDocuments::GetObjectCount() == 0)
+        return S_OK;
+    else
+        return S_FALSE;
+}
+
+STDAPI DllRegisterServer(void)
+{
+    ITypeLib* pTypeLib = GetTypeLib();
+    if (!pTypeLib)
+        return ResultFromScode(SELFREG_E_TYPELIB);
+
+    wchar_t szFile[MAX_PATH];
+    if (GetModuleFileNameW(GetHModule(), szFile, MAX_PATH) == 0)
+        return HRESULT_FROM_WIN32(GetLastError());
+
+    HRESULT hr = RegisterTypeLib(pTypeLib, szFile, nullptr);
+    if (FAILED(hr))
+        return hr;
+
+    // Default is v.5
+    return Registrar(CLSID_spsupp)
+        .RegisterObject(LIBID_spsupp, L"LOSPSupport", L"OpenDocuments", { 5, 1, 2, 3, 4 }, szFile);
+}
+
+STDAPI DllUnregisterServer(void)
+{
+    ITypeLib* pTypeLib = GetTypeLib();
+    if (!pTypeLib)
+        return ResultFromScode(SELFREG_E_TYPELIB);
+    TLIBATTR* pLibAttr;
+    HRESULT hr = pTypeLib->GetLibAttr(&pLibAttr);
+    if (FAILED(hr))
+        return hr;
+    auto ReleaseFunc = [pTypeLib](TLIBATTR* p) { if (p) pTypeLib->ReleaseTLibAttr(p); };
+    typedef std::unique_ptr<TLIBATTR, decltype(ReleaseFunc)> TLIBATTRGuard;
+    static TLIBATTRGuard aTLIBATTRGuard(nullptr, ReleaseFunc);
+
+    hr = UnRegisterTypeLib(pLibAttr->guid, pLibAttr->wMajorVerNum, pLibAttr->wMinorVerNum, pLibAttr->lcid, pLibAttr->syskind);
+    if (FAILED(hr))
+        return hr;
+
+    return Registrar(CLSID_spsupp)
+        .UnRegisterObject(L"LOSPSupport", L"OpenDocuments", { 1, 2, 3, 4, 5 });
+}
+
+// This is called when regsvr32.exe is called with "/i" flag
+// pszCmdLine is the string passed to "/i:<string>"
+// See https://msdn.microsoft.com/library/windows/desktop/bb759846
+STDAPI DllInstall(BOOL bInstall, _In_opt_ PCWSTR pszCmdLine)
+{
+    if (wcscmp(pszCmdLine, L"Substitute_OWSSUPP") == 0)
+    {
+        HRESULT hr;
+        Registrar registrar(CLSID_spsupp);
+        if (bInstall)
+        {
+            // Default is v.5
+            hr = registrar.RegisterProgIDs(L"SharePoint", L"OpenDocuments", { 5, 1, 2, 3, 4 });
+        }
+        else
+        {
+            hr = registrar.UnRegisterProgIDs(L"SharePoint", L"OpenDocuments", { 1, 2, 3, 4, 5 });
+        }
+        return hr;
+    }
+    return E_INVALIDARG;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */