1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/* $Id: RTSystemQueryDmiString-win.cpp $ */
/** @file
* IPRT - RTSystemQueryDmiString, windows ring-3.
*/
/*
* Copyright (C) 2010-2020 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.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define _WIN32_DCOM
#include <iprt/win/windows.h>
#include <WbemCli.h>
#include <iprt/system.h>
#include "internal/iprt.h"
#include <iprt/errcore.h>
#include <iprt/assert.h>
#include <iprt/string.h>
#include <iprt/utf16.h>
/**
* Initialize COM.
*
* @returns COM status code.
*/
static HRESULT rtSystemDmiWinInitialize(void)
{
HRESULT hrc = CoInitializeEx(0, COINIT_MULTITHREADED);
if (SUCCEEDED(hrc))
{
hrc = CoInitializeSecurity(NULL,
-1, /* COM authentication. */
NULL, /* Which authentication services. */
NULL, /* Reserved. */
RPC_C_AUTHN_LEVEL_DEFAULT, /* Default authentication. */
RPC_C_IMP_LEVEL_IMPERSONATE, /* Default impersonation. */
NULL, /* Authentication info. */
EOAC_NONE, /* Additional capabilities. */
NULL); /* Reserved. */
if (hrc == RPC_E_TOO_LATE)
hrc = S_OK;
else if (FAILED(hrc))
CoUninitialize();
}
return hrc;
}
/**
* Undo what rtSystemDmiWinInitialize did.
*/
static void rtSystemDmiWinTerminate(void)
{
CoUninitialize();
}
/**
* Convert a UTF-8 string to a BSTR.
*
* @returns BSTR pointer.
* @param psz The UTF-8 string.
*/
static BSTR rtSystemWinBstrFromUtf8(const char *psz)
{
PRTUTF16 pwsz = NULL;
int rc = RTStrToUtf16(psz, &pwsz);
if (RT_FAILURE(rc))
return NULL;
BSTR pBStr = SysAllocString((const OLECHAR *)pwsz);
RTUtf16Free(pwsz);
return pBStr;
}
/**
* Connect to the DMI server.
*
* @returns COM status code.
* @param pLocator The locator.
* @param pszServer The server name.
* @param ppServices Where to return the services interface.
*/
static HRESULT rtSystemDmiWinConnectToServer(IWbemLocator *pLocator, const char *pszServer, IWbemServices **ppServices)
{
AssertPtr(pLocator);
AssertPtrNull(pszServer);
AssertPtr(ppServices);
BSTR pBStrServer = rtSystemWinBstrFromUtf8(pszServer);
if (!pBStrServer)
return E_OUTOFMEMORY;
HRESULT hrc = pLocator->ConnectServer(pBStrServer,
NULL,
NULL,
0,
NULL,
0,
0,
ppServices);
if (SUCCEEDED(hrc))
{
hrc = CoSetProxyBlanket(*ppServices,
RPC_C_AUTHN_WINNT,
RPC_C_AUTHZ_NONE,
NULL,
RPC_C_AUTHN_LEVEL_CALL,
RPC_C_IMP_LEVEL_IMPERSONATE,
NULL,
EOAC_NONE);
if (FAILED(hrc))
(*ppServices)->Release();
}
SysFreeString(pBStrServer);
return hrc;
}
RTDECL(int) RTSystemQueryDmiString(RTSYSDMISTR enmString, char *pszBuf, size_t cbBuf)
{
AssertPtrReturn(pszBuf, VERR_INVALID_POINTER);
AssertReturn(cbBuf > 0, VERR_INVALID_PARAMETER);
*pszBuf = '\0';
AssertReturn(enmString > RTSYSDMISTR_INVALID && enmString < RTSYSDMISTR_END, VERR_INVALID_PARAMETER);
/*
* Figure the property name before we start.
*/
const char *pszPropName;
switch (enmString)
{
case RTSYSDMISTR_PRODUCT_NAME: pszPropName = "Name"; break;
case RTSYSDMISTR_PRODUCT_VERSION: pszPropName = "Version"; break;
case RTSYSDMISTR_PRODUCT_UUID: pszPropName = "UUID"; break;
case RTSYSDMISTR_PRODUCT_SERIAL: pszPropName = "IdentifyingNumber"; break;
case RTSYSDMISTR_MANUFACTURER: pszPropName = "Vendor"; break;
default:
return VERR_NOT_SUPPORTED;
}
/*
* Before we do anything with COM, we have to initialize it.
*/
bool fUninit = true;
HRESULT hrc = rtSystemDmiWinInitialize();
if (hrc == RPC_E_CHANGED_MODE)
fUninit = false; /* don't fail if already initialized */
else if (FAILED(hrc))
return VERR_NOT_SUPPORTED;
int rc = VERR_NOT_SUPPORTED;
BSTR pBstrPropName = rtSystemWinBstrFromUtf8(pszPropName);
if (pBstrPropName)
{
/*
* Instantiate the IWbemLocator, whatever that is and connect to the
* DMI serve.
*/
IWbemLocator *pLoc;
hrc = CoCreateInstance(CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator,
(LPVOID *)&pLoc);
if (SUCCEEDED(hrc))
{
IWbemServices *pServices;
hrc = rtSystemDmiWinConnectToServer(pLoc, "ROOT\\CIMV2", &pServices);
if (SUCCEEDED(hrc))
{
/*
* Enumerate whatever it is we're looking at and try get
* the desired property.
*/
BSTR pBstrFilter = rtSystemWinBstrFromUtf8("Win32_ComputerSystemProduct");
if (pBstrFilter)
{
IEnumWbemClassObject *pEnum;
hrc = pServices->CreateInstanceEnum(pBstrFilter, 0, NULL, &pEnum);
if (SUCCEEDED(hrc))
{
do
{
IWbemClassObject *pObj;
ULONG cObjRet;
hrc = pEnum->Next(WBEM_INFINITE, 1, &pObj, &cObjRet);
if ( SUCCEEDED(hrc)
&& cObjRet >= 1)
{
VARIANT Var;
VariantInit(&Var);
hrc = pObj->Get(pBstrPropName, 0, &Var, 0, 0);
if ( SUCCEEDED(hrc)
&& V_VT(&Var) == VT_BSTR)
{
/*
* Convert the BSTR to UTF-8 and copy it
* into the return buffer.
*/
char *pszValue;
rc = RTUtf16ToUtf8(Var.bstrVal, &pszValue);
if (RT_SUCCESS(rc))
{
rc = RTStrCopy(pszBuf, cbBuf, pszValue);
RTStrFree(pszValue);
hrc = WBEM_S_FALSE;
}
}
VariantClear(&Var);
pObj->Release();
}
} while (hrc != WBEM_S_FALSE);
pEnum->Release();
}
SysFreeString(pBstrFilter);
}
else
hrc = E_OUTOFMEMORY;
pServices->Release();
}
pLoc->Release();
}
SysFreeString(pBstrPropName);
}
else
hrc = E_OUTOFMEMORY;
if (fUninit)
rtSystemDmiWinTerminate();
if (FAILED(hrc) && rc == VERR_NOT_SUPPORTED)
rc = VERR_NOT_SUPPORTED;
return rc;
}
|
