如何找到一個mac地址？

Question

如何在C++中找到應用程序當前正在運行的計算機的mac地址，然後將該mac地址與某個mac地址進行比較？

因此可以說我們想要比較的某個mac地址是AB-12-CD-34-EF-56，如何找到運行該應用程序的mac地址，然後將該mac地址與AB-12-CD-34-EF-56 mac地址進行比較？做這樣的事情的最好和最簡單的方法是什麼？

Answer 1

在Windows上，您可以使用函數GetAdaptersAddresses()來獲取包含PhysicalAddress[MAX_ADAPTER_ADDRESS_LENGTH];（這是mac地址）的IP_ADAPTER_ADDRESSES結構。

該函數將引入庫Iphlpapi.lib和頭文件<iphlpapi.h>作爲依賴關係。一個簡單的例子，它將打印從可用適配器的所有mac地址：

#include <Winsock2.h> 
#include <iphlpapi.h> 
#include <cstdint> 
#include <cstdio> 
#include <cstdlib> 
#include <vector> 
#pragma comment(lib, "IPHLPAPI.lib") 

int main(int argc, char* argv[]){ 
    ULONG outBufLen = sizeof(IP_ADAPTER_ADDRESSES); 
    GetAdaptersAddresses(0, 0, NULL, NULL, &outBufLen); 
    std::vector<uint8_t> bytes(outBufLen, 0); 
    PIP_ADAPTER_ADDRESSES pCurrAddresses = (IP_ADAPTER_ADDRESSES *)bytes.data(); 
    DWORD dwRetVal = GetAdaptersAddresses(0, 0, NULL, pCurrAddresses, &outBufLen); 
    if (dwRetVal == NO_ERROR) { 
    while (pCurrAddresses != NULL){ 
     for (size_t i = 0; i < (int) pCurrAddresses->PhysicalAddressLength; i++) { 
     if (i == (pCurrAddresses->PhysicalAddressLength - 1)) 
      std::printf("%.2X\n", (int) pCurrAddresses->PhysicalAddress[i]); 
     else 
      std::printf("%.2X-",(int) pCurrAddresses->PhysicalAddress[i]); 
     } 
     pCurrAddresses = pCurrAddresses->Next; 
    } 
    } 
    std::system("pause"); 
    return 0; 
}