是否可以在远程计算机上为 MicrosoftTPM 命名空间查询 WMI? [对 Win32_Tpm 类的远程 WMI 查询失败,HRESULT 0x80041013]
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【中文标题】是否可以在远程计算机上为 MicrosoftTPM 命名空间查询 WMI? [对 Win32_Tpm 类的远程 WMI 查询失败,HRESULT 0x80041013]【英文标题】:Is it possible to query to WMI on a Remote Computer for MicrosoftTPM namespace? [Remote WMI query to Win32_Tpm class failed with, HRESULT 0x80041013] 【发布时间】:2015-03-17 14:43:32 【问题描述】:我正在尝试从远程机器查询 WMI 的 Win32_Tpm 类。但它失败并显示 HRESULT 0x80041013 和描述:提供程序加载失败。 是否可以远程访问 MicrosoftTPM 命名空间? 以下是代码,
hres = pSvc ->CreateInstanceEnum(
bstr_t(Class),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&Enumerator);
hres = CoSetProxyBlanket(
Enumerator, // Indicates the proxy to set
RPC_C_AUTHN_DEFAULT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_DEFAULT, // RPC_C_AUTHZ_xxx
COLE_DEFAULT_PRINCIPAL, // Server principal name
RPC_C_AUTHN_LEVEL_PKT_PRIVACY, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
mUserAcct, // client identity
EOAC_NONE // proxy capabilities
);
hres = Enumerator->Next(WBEM_INFINITE, 1, &TPMClass, &uReturn);
//这里我失败了,hres = 0x80041013 和 uReturn = 0,执行上述语句后 TPMClass 的值也为 NULL。
下面是详细代码,
IEnumWbemClassObject* Enumerator;
IWbemClassObject* TPMClass = NULL;
ULONG uReturn = 0;
hres = CoInitializeEx(0, COINIT_MULTITHREADED);
if (FAILED(hres))
cout << "Failed to initialize COM library. Error code = 0x"
<< hex << hres << endl;
return 1; // Program has failed.
// Step 2: --------------------------------------------------
// Set general COM security levels --------------------------
hres = CoInitializeSecurity(
NULL,
-1, // COM authentication
NULL, // Authentication services
NULL, // Reserved
RPC_C_AUTHN_LEVEL_DEFAULT, // Default authentication
RPC_C_IMP_LEVEL_IDENTIFY, // Default Impersonation
NULL, // Authentication info
EOAC_NONE, // Additional capabilities
NULL // Reserved
);
if (FAILED(hres))
cout << "Failed to initialize security. Error code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
// Step 3: ---------------------------------------------------
// Obtain the initial locator to WMI -------------------------
IWbemLocator *pLoc = NULL;
hres = CoCreateInstance(
CLSID_WbemLocator,
0,
CLSCTX_INPROC_SERVER,
IID_IWbemLocator, (LPVOID *)&pLoc);
if (FAILED(hres))
cout << "Failed to create IWbemLocator object."
<< " Err code = 0x"
<< hex << hres << endl;
CoUninitialize();
return 1; // Program has failed.
// Step 4: -----------------------------------------------------
// Connect to WMI through the IWbemLocator::ConnectServer method
IWbemServices *pSvc = NULL;
hres = pLoc->ConnectServer(
_bstr_t(L"\\\\REMOTE\\root\\cimv2\\Security\\MicrosoftTpm"),
_bstr_t(useToken ? NULL : pszName), // User name
_bstr_t(useToken ? NULL : pszPwd), // User password
NULL, // Locale
NULL, // Security flags
_bstr_t(useNTLM ? NULL : pszAuthority),// Authority
NULL, // Context object
&pSvc // IWbemServices proxy
);
COAUTHIDENTITY *userAcct = NULL;
COAUTHIDENTITY authIdent;
//Created COAUTHIDENTITY with internal function
userAcct = &authIdent;
hres = CoSetProxyBlanket(
pSvc, // Indicates the proxy to set
RPC_C_AUTHN_DEFAULT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_DEFAULT, // RPC_C_AUTHZ_xxx
COLE_DEFAULT_PRINCIPAL, // Server principal name
RPC_C_AUTHN_LEVEL_PKT_PRIVACY, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
userAcct, // client identity
EOAC_NONE // proxy capabilities
);
hres = pSvc ->CreateInstanceEnum(
bstr_t(Class),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
NULL,
&Enumerator);
hres = CoSetProxyBlanket(
Enumerator, // Indicates the proxy to set
RPC_C_AUTHN_DEFAULT, // RPC_C_AUTHN_xxx
RPC_C_AUTHZ_DEFAULT, // RPC_C_AUTHZ_xxx
COLE_DEFAULT_PRINCIPAL, // Server principal name
RPC_C_AUTHN_LEVEL_PKT_PRIVACY, // RPC_C_AUTHN_LEVEL_xxx
RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
mUserAcct, // client identity
EOAC_NONE // proxy capabilities
);
//Here I am failing , value of TPMClass is NULL after execution of following statement also.
hres = Enumerator->Next(WBEM_INFINITE, 1, &TPMClass, &uReturn);
【问题讨论】:
【参考方案1】:上面的类名是函数 CreateInstanceEnum() 中的 L"Win32_Tpm"。 我可以在从本地机器访问时获取实例,但在从远程机器访问时失败。
注意:我已经为远程机器上的用户分配了适当的权限。
【讨论】:
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