如何获取系统序列号？

Question

from c# 我是借助这段代码（不是我）得到了系统序列号

public static string getSystemSerialNumber()
{
    string mbInfo = string.Empty;
    ManagementScope scope = new ManagementScope(@"\\" + Environment.MachineName + @"\root\cimv2");
    scope.Connect();
    ManagementObject wmiClass = new ManagementObject(scope, new ManagementPath("Win32_BaseBoard.Tag=\"Base Board\""), new ObjectGetOptions());
    foreach (PropertyData propData in wmiClass.Properties)
    {
        if (propData.Name == "SerialNumber")
        {
            mbInfo = Convert.ToString(propData.Value);
            break;
        }
    }
    return mbInfo;
}

它返回以下字符串：/8ZBPX**/CN12966791****/ ，我想得到上面的字符串，但使用c++（windows10）。我找到了这个code：

system("wmic bios get serialnumber > sn.txt");
    wchar_t sn[16];

    FILE* fp = fopen("sn.txt", "r, ccs=UTF-8");
    fgetws(sn, 16, fp); //dummy read of first line
    fgetws(sn, 16, fp); //now sn contains 2nd line

    fclose(fp);          //cleanup temp file
    remove("sn.txt");

    printf("The serial Number is: %ws\n", sn);

它返回以下字符串：8ZBPX**，我不知道如何找到后面的信息链。

如何在 c++ 中获取完整的系统序列号？ 非常感谢！

Answer 1

您引用的 SO 答案：C++ How do I pass a system serial number into a variable?

引用了一些 MSDN 链接，其中一个将您定向到 Example: Getting WMI Data from the Local Computer。

这篇文章是一个很好的起点，可以从您的问题中创建“getSystemSerialNumber()”函数的转换。

逐字逐句获取该文章中的代码，您只需更改几行即可将其转换为查询序列号（为了清晰/正确，还应更改其他一些注释行和输出行）。

然后您可以进一步修改“main()”函数以返回值以模仿您的 C# 函数。

这是修改后的版本：

#define _WIN32_DCOM
#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>

#pragma comment(lib, "wbemuuid.lib")

int main(int argc, char** argv)
{
    HRESULT hres;

    // Step 1: --------------------------------------------------
    // Initialize COM. ------------------------------------------

    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_IMPERSONATE, // 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;

    // Connect to the root\cimv2 namespace with
    // the current user and obtain pointer pSvc
    // to make IWbemServices calls.
    hres = pLoc->ConnectServer(
        _bstr_t(L"ROOT\\CIMV2"), // Object path of WMI namespace
        NULL,                    // User name. NULL = current user
        NULL,                    // User password. NULL = current
        0,                       // Locale. NULL indicates current
        NULL,                    // Security flags.
        0,                       // Authority (for example, Kerberos)
        0,                       // Context object 
        &pSvc                    // pointer to IWbemServices proxy
    );

    if (FAILED(hres))
    {
        cout << "Could not connect. Error code = 0x"
            << hex << hres << endl;
        pLoc->Release();
        CoUninitialize();
        return 1;                // Program has failed.
    }

    cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;


    // Step 5: --------------------------------------------------
    // Set security levels on the proxy -------------------------

    hres = CoSetProxyBlanket(
        pSvc,                        // Indicates the proxy to set
        RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx
        RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx
        NULL,                        // Server principal name 
        RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx 
        RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
        NULL,                        // client identity
        EOAC_NONE                    // proxy capabilities 
    );

    if (FAILED(hres))
    {
        cout << "Could not set proxy blanket. Error code = 0x"
            << hex << hres << endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;               // Program has failed.
    }

    // Step 6: --------------------------------------------------
    // Use the IWbemServices pointer to make requests of WMI ----

    // Query the system board
    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(
        bstr_t("WQL"),
        bstr_t("SELECT * FROM Win32_Baseboard WHERE Tag = \"Base Board\""),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
        NULL,
        &pEnumerator);

    if (FAILED(hres))
    {
        cout << "Query for system board serial number failed."
            << " Error code = 0x"
            << hex << hres << endl;
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;               // Program has failed.
    }

    // Step 7: -------------------------------------------------
    // Get the data from the query in step 6 -------------------

    IWbemClassObject* pclsObj = NULL;
    ULONG uReturn = 0;

    while (pEnumerator)
    {
        HRESULT hr = pEnumerator->Next(WBEM_INFINITE, 1,
            &pclsObj, &uReturn);

        if (0 == uReturn)
        {
            break;
        }

        VARIANT vtProp;

        // Get the value of the Serial Number property
        hr = pclsObj->Get(L"SerialNumber", 0, &vtProp, 0, 0);
        wcout << " Serial Number : " << vtProp.bstrVal << endl;
        VariantClear(&vtProp);

        pclsObj->Release();
    }

    // Cleanup
    // ========

    pSvc->Release();
    pLoc->Release();
    pEnumerator->Release();
    CoUninitialize();

    return 0;   // Program successfully completed.

}

更改的有效行如下：

1. 您会看到 SELECT 语句看起来类似于您的 C# ManagementPath 构造函数调用：

    hres = pSvc->ExecQuery(
        bstr_t("WQL"),
        bstr_t("SELECT * FROM Win32_Baseboard WHERE Tag = \"Base Board\""),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
        NULL,
        &pEnumerator);
   

2. 查询正确的属性：

        hr = pclsObj->Get(L"SerialNumber", 0, &vtProp, 0, 0);
   

我不是故意整理的（有很多机会，例如，using namespace std; 需要去，智能指针应该自始至终使用等），但保持原样，以便您可以与原来的比较MSDN 代码。