1/* -*- Mode: C; tab-width: 4 -*-
2 *
3 * Copyright (c) 2002-2004 Apple Computer, Inc. All rights reserved.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#define _WIN32_DCOM
19#include "VPCDetect.h"
20#include "DebugServices.h"
21#include <comdef.h>
22#include <Wbemidl.h>
23
24# pragma comment(lib, "wbemuuid.lib")
25
26static BOOL g_doneCheck = FALSE;
27static BOOL g_isVPC		= FALSE;
28
29
30mStatus
31IsVPCRunning( BOOL * inVirtualPC )
32{
33	IWbemLocator			*	pLoc 		= 0;
34	IWbemServices			*	pSvc 		= 0;
35    IEnumWbemClassObject	*	pEnumerator = NULL;
36	bool						coInit 		= false;
37	HRESULT						hres;
38	SC_HANDLE					scm			= NULL;
39	SC_HANDLE					service		= NULL;
40	SERVICE_STATUS				status;
41	mStatus						err;
42	BOOL						ok          = TRUE;
43
44	// Initialize flag
45
46	*inVirtualPC = FALSE;
47
48	// Find out if WMI is running
49
50	scm = OpenSCManager( 0, 0, SC_MANAGER_CONNECT );
51	err = translate_errno( scm, (OSStatus) GetLastError(), kOpenErr );
52	require_noerr( err, exit );
53
54	service = OpenService( scm, TEXT( "winmgmt" ), SERVICE_QUERY_STATUS );
55	err = translate_errno( service, (OSStatus) GetLastError(), kNotFoundErr );
56	require_noerr( err, exit );
57
58	ok = QueryServiceStatus( service, &status );
59	err = translate_errno( ok, (OSStatus) GetLastError(), kAuthenticationErr );
60	require_noerr( err, exit );
61	require_action( status.dwCurrentState == SERVICE_RUNNING, exit, err = kUnknownErr );
62
63    // Initialize COM.
64
65	hres = CoInitializeEx(0, COINIT_MULTITHREADED);
66	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
67	coInit = true;
68
69	// Initialize Security
70
71	hres =  CoInitializeSecurity(NULL, -1, NULL, NULL, RPC_C_AUTHN_LEVEL_DEFAULT, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE, NULL );
72	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
73
74
75    // Obtain the initial locator to Windows Management on a particular host computer.
76
77    hres = CoCreateInstance( CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID *) &pLoc );
78	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
79
80    // Connect to the root\cimv2 namespace with the
81    // current user and obtain pointer pSvc
82    // to make IWbemServices calls.
83
84	hres = pLoc->ConnectServer( _bstr_t(L"ROOT\\CIMV2"), NULL, NULL, 0, WBEM_FLAG_CONNECT_USE_MAX_WAIT, 0, 0, &pSvc );
85	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
86
87    // Set the IWbemServices proxy so that impersonation
88    // of the user (client) occurs.
89
90	hres = CoSetProxyBlanket( pSvc, RPC_C_AUTHN_WINNT, RPC_C_AUTHZ_NONE, NULL, RPC_C_AUTHN_LEVEL_CALL, RPC_C_IMP_LEVEL_IMPERSONATE, NULL, EOAC_NONE );
91	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
92
93    // Use the IWbemServices pointer to make requests of WMI.
94    // Make requests here:
95
96	hres = pSvc->ExecQuery( bstr_t("WQL"), bstr_t("SELECT * from Win32_BaseBoard"), WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, NULL, &pEnumerator);
97
98	require_action( SUCCEEDED( hres ), exit, err = kUnknownErr );
99
100	do
101	{
102		IWbemClassObject* pInstance = NULL;
103		ULONG dwCount = NULL;
104
105		hres = pEnumerator->Next( WBEM_INFINITE, 1, &pInstance, &dwCount);
106
107		if ( pInstance )
108		{
109			VARIANT v;
110			BSTR strClassProp = SysAllocString(L"Manufacturer");
111			HRESULT hr;
112
113			hr = pInstance->Get(strClassProp, 0, &v, 0, 0);
114			SysFreeString(strClassProp);
115
116			// check the HRESULT to see if the action succeeded.
117
118			if (SUCCEEDED(hr) && (V_VT(&v) == VT_BSTR))
119			{
120				wchar_t * wstring = wcslwr( V_BSTR( &v ) );
121
122				if (wcscmp( wstring, L"microsoft corporation" ) == 0 )
123				{
124					*inVirtualPC = TRUE;
125				}
126			}
127
128			VariantClear(&v);
129		}
130	} while (hres == WBEM_S_NO_ERROR);
131
132exit:
133
134	if ( pSvc != NULL )
135	{
136    	pSvc->Release();
137	}
138
139	if ( pLoc != NULL )
140	{
141    	pLoc->Release();
142	}
143
144	if ( coInit )
145	{
146    	CoUninitialize();
147	}
148
149	if ( service )
150	{
151		CloseServiceHandle( service );
152	}
153
154	if ( scm )
155	{
156		CloseServiceHandle( scm );
157	}
158
159	if ( *inVirtualPC )
160	{
161		dlog( kDebugLevelTrace, "Virtual PC detected" );
162	}
163
164	return err;
165}
166