获取网卡名称和网卡MAC地址

test.h

#ifndef TEST_H
#define TEST_H

#include <map>
#include <string>

class MacAddress {
public:
    int GetMacNameAddress(std::map<std::string, std::string>& mac);

private:
    void GetMacName();
    int GetMacAddress(std::string name);
    std::map<std::string, std::string> mMac;
};

#endif

test.cpp

#include "test.h"
#include <iostream>
#include <ifaddrs.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>

using namespace std;

int MacAddress::GetMacNameAddress(map<string, string>& mac)
{
    GetMacName();
    auto iter = mMac.begin();
    while (iter != mMac.end()) {
        cout << "key:" << iter->first << " " << "value:" << iter->second << endl;
        int ret = GetMacAddress(iter->first);
        if (ret != 0) {
            cout << "GetMacAddress Failed!" << endl;
            return -1;
        } 
        if (iter->second == "00 00 00 00 00 00") {
            cout << "erase key:" << iter->first << " " << "value:" << iter->second << endl;
            iter = mMac.erase(iter);
        } else {
            iter++;
        }
    }
    mac = mMac;
    return 0;
}

void MacAddress::GetMacName()
{
    cout << "GetMacName Start>>>" << endl;

    struct ifaddrs * ifAddrStruct = nullptr; 
    void * tmpAddrPtr = nullptr;
    getifaddrs(&ifAddrStruct);
    while (ifAddrStruct != nullptr) {
        cout << "ifa_name:" << ifAddrStruct->ifa_name << endl;
        mMac.insert(make_pair(ifAddrStruct->ifa_name, ""));
        ifAddrStruct = ifAddrStruct->ifa_next;
    }

    cout << "GetMacName End<<<" << endl;
}


int MacAddress::GetMacAddress(string name)
{
    cout << "GetMacAddress Start>>>" << endl;

    struct ifreq ifreq;
    char mac[32] = "";

    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if(sock < 0)
    {
        cout << "error sock" << endl;
        return -1;
    }
    strcpy(ifreq.ifr_name, name.c_str());
    if(ioctl(sock,SIOCGIFHWADDR,&ifreq) < 0)
    {
        cout << "error ioctl" << endl;
        return -1;
    }
    for(int i = 0; i < 6; i++){
        sprintf(mac+3*i, "%02X ", (unsigned char)ifreq.ifr_hwaddr.sa_data[i]);
    }
    mac[strlen(mac) - 1] = 0;
    cout << "MAC: " << mac << endl;
    mMac[name] = mac;

    cout << "GetMacAddress End<<<" << endl;
    return 0;
}

main.cpp

#include "test.h"
#include <iostream>

using namespace std;

int main()
{
    MacAddress *macAddress = new MacAddress();
    map<string, string> mac;
    macAddress->GetMacNameAddress(mac);

    cout << "main debug: =========================" << endl;
    auto iter = mac.begin();
    while (iter != mac.end()) {
        cout << "key:" << iter->first << " " << "value:" << iter->second << endl;
        iter++;
    }

    delete macAddress;
    return 0;
}

build.sh

#!/bin/bash

g++ test.cpp main.cpp -o test -g -std=c++14