+++ /dev/null
-/*
- * ReactOS Explorer
- *
- * Copyright 2016 Sylvain Deverre <deverre dot sylv at gmail dot com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * Wraps the component categories manager enum
- */
-
-#include "shellbars.h"
-
-#define REGPATH L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Discardable\\PostSetup\\Component Categories"
-#define IMPLEMENTING L"Implementing"
-#define REQUIRING L"Requiring"
-
-typedef struct categoryCacheHeader
-{
- DWORD dwSize; // size of header only
- DWORD version; // currently 1
- SYSTEMTIME writeTime; // time we were written to registry
- DWORD classCount; // number of classes following
-} CATCACHEHDR, *PCATCACHEHDR;
-
-/*
- * This class manages a cached explorer component categories items, writing cache if it
- * doesn't exist yet.
- * It is used by CSHEnumClassesOfCategories internally.
- */
-class CComCatCachedCategory
-{
- public:
- CComCatCachedCategory();
- virtual ~CComCatCachedCategory();
- HRESULT WriteCacheToDSA(HDSA pDest);
- HRESULT STDMETHODCALLTYPE Initialize(CATID &catID, BOOL reloadCache);
- private:
- BOOL LoadFromRegistry();
- HRESULT LoadFromComCatMgr();
- HRESULT CacheDSA();
- CATID fCategory;
- HDSA fLocalDsa;
-};
-
-CComCatCachedCategory::CComCatCachedCategory()
-{
- fLocalDsa = DSA_Create(sizeof(GUID), 5);
-}
-
-HRESULT STDMETHODCALLTYPE CComCatCachedCategory::Initialize(CATID &catID, BOOL reloadCache)
-{
- HRESULT hr;
-
- fCategory = catID;
- if (reloadCache || !LoadFromRegistry())
- {
- hr = LoadFromComCatMgr();
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
-
- hr = CacheDSA();
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
- }
- return S_OK;
-}
-
-CComCatCachedCategory::~CComCatCachedCategory()
-{
- DSA_Destroy(fLocalDsa);
-}
-
-BOOL CComCatCachedCategory::LoadFromRegistry()
-{
- WCHAR bufKey[MAX_PATH];
- WCHAR guidStr[MAX_PATH];
- DWORD dataSize, i;
- CComHeapPtr<CATCACHEHDR> buffer;
- GUID *guidArray;
-
- if (!fLocalDsa)
- return FALSE;
-
- dataSize = 0;
- if (!StringFromGUID2(fCategory, guidStr, MAX_PATH))
- return FALSE;
-
- wsprintf(bufKey, L"%s\\%s\\%s", REGPATH , guidStr, L"Enum");
-
- // Try to read key and get proper value size
- if (SHGetValue(HKEY_CURRENT_USER, bufKey, IMPLEMENTING, NULL, NULL, &dataSize))
- return FALSE;
-
- buffer.Attach((PCATCACHEHDR)CoTaskMemAlloc(dataSize));
-
- SHGetValue(HKEY_CURRENT_USER, bufKey, IMPLEMENTING, NULL, buffer, &dataSize);
- guidArray = (GUID*)(buffer + 1);
- for (i = 0; i < buffer->classCount; i++)
- {
- // Add class to cache
- DSA_InsertItem(fLocalDsa, DSA_APPEND, guidArray + i);
- }
-
- return TRUE;
-}
-
-HRESULT CComCatCachedCategory::CacheDSA()
-{
- WCHAR bufKey[MAX_PATH];
- WCHAR guidStr[MAX_PATH];
- UINT elemCount;
- UINT i;
- UINT bufferSize;
- CComHeapPtr<CATCACHEHDR> buffer;
- GUID *guidArray;
- GUID *tmp;
-
- elemCount = DSA_GetItemCount(fLocalDsa);
- bufferSize = sizeof(CATCACHEHDR) + elemCount * sizeof(GUID);
- if (!StringFromGUID2(fCategory, guidStr, MAX_PATH))
- return E_FAIL;
-
- buffer.Attach((PCATCACHEHDR)CoTaskMemAlloc(bufferSize));
- if (!buffer)
- return E_OUTOFMEMORY;
-
- // Correctly fill cache header
- buffer->dwSize = sizeof(CATCACHEHDR);
- buffer->version = 1;
- GetSystemTime(&buffer->writeTime);
- buffer->classCount = (DWORD)elemCount;
-
- guidArray = (GUID*)(buffer + 1);
- wsprintf(bufKey, L"%s\\%s\\%s", REGPATH , guidStr, L"Enum");
-
- // Write DSA contents inside the memory buffer allocated
- for(i = 0; i < elemCount; i++)
- {
- tmp = (GUID*)DSA_GetItemPtr(fLocalDsa, i);
- if (tmp)
- {
- guidArray[i] = *tmp;
- }
- }
-
- // Save items to registry
- SHSetValue(HKEY_CURRENT_USER, bufKey, IMPLEMENTING, REG_BINARY, buffer, bufferSize);
-
- guidArray = NULL;
- return S_OK;
-}
-
-HRESULT CComCatCachedCategory::LoadFromComCatMgr()
-{
- HRESULT hr;
- CComPtr<ICatInformation> pCatInformation;
- CComPtr<IEnumGUID> pEnumGUID;
- ULONG pFetched;
- CLSID tmp;
-
- // Get component categories manager instance
- hr = CoCreateInstance(CLSID_StdComponentCategoriesMgr, NULL, CLSCTX_INPROC_SERVER,
- IID_PPV_ARG(ICatInformation, &pCatInformation));
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
-
- // Get the proper enumerator
- hr = pCatInformation->EnumClassesOfCategories(1, &fCategory, NULL, NULL, &pEnumGUID);
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
-
- // Enumerate elements
- do
- {
- pFetched = 0;
- pEnumGUID->Next(1, &tmp, &pFetched);
- if (pFetched)
- {
- if (DSA_InsertItem(fLocalDsa, DSA_APPEND, &tmp) == E_OUTOFMEMORY)
- return E_OUTOFMEMORY;
- }
- }
- while (pFetched > 0);
- return S_OK;
-}
-
-HRESULT CComCatCachedCategory::WriteCacheToDSA(HDSA pDest)
-{
- INT i;
- for(i = 0; i < DSA_GetItemCount(fLocalDsa); i++)
- {
- if (DSA_InsertItem(pDest, DSA_APPEND, DSA_GetItemPtr(fLocalDsa, i)) == DSA_ERR)
- return E_OUTOFMEMORY;
- }
- return S_OK;
-}
-
-class CSHEnumClassesOfCategories :
- public CComCoClass<CSHEnumClassesOfCategories>,
- public CComObjectRootEx<CComMultiThreadModelNoCS>,
- public IEnumGUID
-{
- private:
- CComPtr<ICatInformation> fCatInformation;
- HDSA fDsa;
- ULONG fCursor;
-
- public:
- CSHEnumClassesOfCategories();
- virtual ~CSHEnumClassesOfCategories();
- virtual HRESULT STDMETHODCALLTYPE Initialize(ULONG cImplemented, CATID *pImplemented, ULONG cRequired, CATID *pRequired);
- // *** IEnumGUID methods ***
- virtual HRESULT STDMETHODCALLTYPE Clone(IEnumCLSID **ppvOut);
- virtual HRESULT STDMETHODCALLTYPE Next(ULONG cElt, CLSID *pElts, ULONG *pFetched);
- virtual HRESULT STDMETHODCALLTYPE Reset();
- virtual HRESULT STDMETHODCALLTYPE Skip(ULONG nbElts);
-
- BEGIN_COM_MAP(CSHEnumClassesOfCategories)
- COM_INTERFACE_ENTRY_IID(IID_IEnumGUID, IEnumGUID)
- END_COM_MAP()
-};
-
-CSHEnumClassesOfCategories::CSHEnumClassesOfCategories()
-{
- fCursor = 0;
- fDsa = DSA_Create(sizeof(GUID), 5);
-}
-
-CSHEnumClassesOfCategories::~CSHEnumClassesOfCategories()
-{
- if (fDsa)
- DSA_Destroy(fDsa);
-}
-
-HRESULT CSHEnumClassesOfCategories::Initialize(ULONG cImplemented, CATID *pImplemented, ULONG cRequired, CATID *pRequired)
-{
- UINT i;
- HRESULT hr;
-
- if (!fDsa)
- return E_FAIL;
-
- if (cRequired > 0 || cImplemented == (ULONG)-1)
- {
- FIXME("Implement required categories class enumeration\n");
- return E_NOTIMPL;
- }
-
- // Don't do anything if we have nothing
- if (cRequired == 0 && cImplemented == (ULONG)-1)
- return E_FAIL;
-
- // For each implemented category, create a cache and add it to our local DSA
- for (i = 0; i < cImplemented; i++)
- {
- CComCatCachedCategory cachedCat;
- hr = cachedCat.Initialize(pImplemented[i], FALSE);
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
- cachedCat.WriteCacheToDSA(fDsa);
- }
- return S_OK;
-}
-
-// *** IEnumGUID methods ***
-
-HRESULT STDMETHODCALLTYPE CSHEnumClassesOfCategories::Clone(IEnumCLSID **ppvOut)
-{
- return E_NOTIMPL;
-}
-
-HRESULT STDMETHODCALLTYPE CSHEnumClassesOfCategories::Next(ULONG cElt, CLSID *pElts, ULONG *pFetched)
-{
- ULONG i;
- ULONG read;
- GUID *tmp;
-
- if (!pElts)
- return E_INVALIDARG;
- read = 0;
- for (i = 0; i < cElt && (fCursor < (ULONG)DSA_GetItemCount(fDsa)); i++)
- {
- tmp = (GUID*)DSA_GetItemPtr(fDsa, fCursor + i);
- if (!tmp)
- break;
- pElts[i] = *tmp;
- read++;
- }
- fCursor += read;
- if (pFetched)
- *pFetched = read;
- return S_OK;
-}
-
-HRESULT STDMETHODCALLTYPE CSHEnumClassesOfCategories::Reset()
-{
- fCursor = 0;
- return S_OK;
-}
-
-HRESULT STDMETHODCALLTYPE CSHEnumClassesOfCategories::Skip(ULONG nbElts)
-{
- if (fCursor + nbElts >= (ULONG)DSA_GetItemCount(fDsa))
- return E_INVALIDARG;
- fCursor += nbElts;
- return S_OK;
-}
-
-/*************************************************************************
- * SHEnumClassesOfCategories [BROWSEUI.136]
- */
-extern "C" HRESULT WINAPI SHEnumClassesOfCategories(ULONG cImplemented, CATID *pImplemented, ULONG cRequired, CATID *pRequired, IEnumGUID **out)
-{
- HRESULT hr;
-
- hr = ShellObjectCreatorInit<CSHEnumClassesOfCategories>(
- cImplemented, pImplemented, cRequired, pRequired, IID_PPV_ARG(IEnumGUID, out));
- if (FAILED_UNEXPECTEDLY(hr))
- return hr;
- return S_OK;
-}
projects / reactos.git / blobdiff