/* $Id: com.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */ /** @file * MS COM / XPCOM Abstraction Layer */ /* * Copyright (C) 2005-2020 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_MAIN #if !defined(VBOX_WITH_XPCOM) # include #else /* !defined (VBOX_WITH_XPCOM) */ # include # include # include # include # include # include # include # include # include # define IPC_DCONNECTSERVICE_CONTRACTID "@mozilla.org/ipc/dconnect-service;1" // official XPCOM headers don't define it yet #endif /* !defined (VBOX_WITH_XPCOM) */ #include "VBox/com/com.h" #include "VBox/com/assert.h" #include "VBox/com/Guid.h" #include "VBox/com/array.h" #include #include #include /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ namespace com { /* static */ const Guid Guid::Empty; /* default ctor is OK */ const char Zeroes[16] = {0, }; void GetInterfaceNameByIID(const GUID &aIID, BSTR *aName) { AssertPtrReturnVoid(aName); *aName = NULL; #if !defined(VBOX_WITH_XPCOM) LONG rc; LPOLESTR iidStr = NULL; if (StringFromIID(aIID, &iidStr) == S_OK) { HKEY ifaceKey; rc = RegOpenKeyExW(HKEY_CLASSES_ROOT, L"Interface", 0, KEY_QUERY_VALUE, &ifaceKey); if (rc == ERROR_SUCCESS) { HKEY iidKey; rc = RegOpenKeyExW(ifaceKey, iidStr, 0, KEY_QUERY_VALUE, &iidKey); if (rc == ERROR_SUCCESS) { /* determine the size and type */ DWORD sz, type; rc = RegQueryValueExW(iidKey, NULL, NULL, &type, NULL, &sz); if (rc == ERROR_SUCCESS && type == REG_SZ) { /* query the value to BSTR */ *aName = SysAllocStringLen(NULL, (sz + 1) / sizeof(TCHAR) + 1); rc = RegQueryValueExW(iidKey, NULL, NULL, NULL, (LPBYTE) *aName, &sz); if (rc != ERROR_SUCCESS) { SysFreeString(*aName); *aName = NULL; } } RegCloseKey(iidKey); } RegCloseKey(ifaceKey); } CoTaskMemFree(iidStr); } #else /* !defined (VBOX_WITH_XPCOM) */ nsresult rv; nsCOMPtr iim = do_GetService(NS_INTERFACEINFOMANAGER_SERVICE_CONTRACTID, &rv); if (NS_SUCCEEDED(rv)) { nsCOMPtr iinfo; rv = iim->GetInfoForIID(&aIID, getter_AddRefs(iinfo)); if (NS_SUCCEEDED(rv)) { const char *iname = NULL; iinfo->GetNameShared(&iname); char *utf8IName = NULL; if (RT_SUCCESS(RTStrCurrentCPToUtf8(&utf8IName, iname))) { PRTUTF16 utf16IName = NULL; if (RT_SUCCESS(RTStrToUtf16(utf8IName, &utf16IName))) { *aName = SysAllocString((OLECHAR *) utf16IName); RTUtf16Free(utf16IName); } RTStrFree(utf8IName); } } } #endif /* !defined (VBOX_WITH_XPCOM) */ } #ifdef VBOX_WITH_XPCOM HRESULT GlueCreateObjectOnServer(const CLSID &clsid, const char *serverName, const nsIID &id, void** ppobj) { HRESULT rc; nsCOMPtr ipcServ = do_GetService(IPC_SERVICE_CONTRACTID, &rc); if (SUCCEEDED(rc)) { PRUint32 serverID = 0; rc = ipcServ->ResolveClientName(serverName, &serverID); if (SUCCEEDED (rc)) { nsCOMPtr dconServ = do_GetService(IPC_DCONNECTSERVICE_CONTRACTID, &rc); if (SUCCEEDED(rc)) rc = dconServ->CreateInstance(serverID, clsid, id, ppobj); } } return rc; } HRESULT GlueCreateInstance(const CLSID &clsid, const nsIID &id, void** ppobj) { nsCOMPtr manager; HRESULT rc = NS_GetComponentManager(getter_AddRefs(manager)); if (SUCCEEDED(rc)) rc = manager->CreateInstance(clsid, nsnull, id, ppobj); return rc; } #endif // VBOX_WITH_XPCOM } /* namespace com */