reactos/dll/shellext/fontext/fontext.cpp

/*
 * PROJECT:     ReactOS Font Shell Extension
 * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
 * PURPOSE:     Shell extension entry point
 * COPYRIGHT:   Copyright 2019,2020 Mark Jansen <mark.jansen@reactos.org>
 */

#include "precomp.h"

WINE_DEFAULT_DEBUG_CHANNEL(fontext);

const GUID CLSID_CFontExt = { 0xbd84b380, 0x8ca2, 0x1069, { 0xab, 0x1d, 0x08, 0x00, 0x09, 0x48, 0xf5, 0x34 } };


class CFontExtModule : public CComModule
{
public:
    void Init(_ATL_OBJMAP_ENTRY *p, HINSTANCE h, const GUID *plibid)
    {
        g_FontCache = new CFontCache();
        CComModule::Init(p, h, plibid);
    }

    void Term()
    {
        delete g_FontCache;
        g_FontCache = NULL;
        CComModule::Term();
    }
};

BEGIN_OBJECT_MAP(ObjectMap)
    OBJECT_ENTRY(CLSID_CFontExt, CFontExt)
END_OBJECT_MAP()


LONG g_ModuleRefCnt;
CFontExtModule gModule;


STDAPI DllCanUnloadNow()
{
    if (g_ModuleRefCnt)
        return S_FALSE;
    return gModule.DllCanUnloadNow();
}

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
{
    return gModule.DllGetClassObject(rclsid, riid, ppv);
}


STDAPI DllRegisterServer()
{
    WCHAR Path[MAX_PATH] = { 0 };
    static const char DesktopIniContents[] = "[.ShellClassInfo]\r\n"
        "CLSID={BD84B380-8CA2-1069-AB1D-08000948F534}\r\n"
        "IconResource=%SystemRoot%\\system32\\shell32.dll,-39\r\n"; // IDI_SHELL_FONTS_FOLDER
    HANDLE hFile;
    HRESULT hr;

    hr = gModule.DllRegisterServer(FALSE);
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;

    hr = SHGetFolderPathW(NULL, CSIDL_FONTS, NULL, 0, Path);
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;

    // Make this a system folder:
    // Ideally this should not be done here, but when installing
    // Otherwise, livecd won't have this set properly
    DWORD dwAttributes = GetFileAttributesW(Path);
    if (dwAttributes != INVALID_FILE_ATTRIBUTES)
    {
        dwAttributes |= FILE_ATTRIBUTE_SYSTEM;
        SetFileAttributesW(Path, dwAttributes);
    }
    else
    {
        ERR("Unable to get attributes for fonts folder (%d)\n", GetLastError());
    }

    if (!PathAppendW(Path, L"desktop.ini"))
        return E_FAIL;

    hFile = CreateFileW(Path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN, NULL);
    if (hFile == INVALID_HANDLE_VALUE)
        return HRESULT_FROM_WIN32(GetLastError());

    DWORD BytesWritten, BytesToWrite = strlen(DesktopIniContents);
    if (WriteFile(hFile, DesktopIniContents, (DWORD)BytesToWrite, &BytesWritten, NULL))
        hr = (BytesToWrite == BytesWritten) ? S_OK : E_FAIL;
    else
        hr = HRESULT_FROM_WIN32(GetLastError());
    CloseHandle(hFile);
    return hr;
}

STDAPI DllUnregisterServer()
{
    return gModule.DllUnregisterServer(FALSE);
}


EXTERN_C
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
    switch (dwReason)
    {
    case DLL_PROCESS_ATTACH:
        DisableThreadLibraryCalls(hInstance);
        gModule.Init(ObjectMap, hInstance, NULL);
        break;
    case DLL_PROCESS_DETACH:
        gModule.Term();
        break;
    }

    return TRUE;
}