Is there any way to get MAC address of remote IP (Same LAN) with QT code?

SilentWolf

I can see MAC address by terminal command:
~$ arp -a
_gateway (192.168.2.1) at f8:1a:67:7c:78:1c [ether] on wlp0s20f3
? (192.168.2.104) at 48:b0:2d:3e:6e:b4 [ether] on wlp0s20f3
? (192.168.2.222) at 00:17:61:10:a9:47 [ether] on wlp0s20f3
? (192.168.2.100) at ea:23:dc:ae:66:e4 [ether] on wlp0s20f3

But I don't know how to get MAC address of 192.168.2.222 with Qt code

JoeCFD

https://stackoverflow.com/questions/45081979/check-ip-active-address-with-qt
arp scan is there.

SilentWolf

@JoeCFD thank you
I got address by arp -a with bellow code

QString getMacAddress(QString Ip)
{
    QString outCmd, error;
    QProcess process;
    process.start("arp -a " + Ip);
    process.waitForFinished();
    outCmd = process.readAllStandardOutput();
    error = process.readAllStandardError();

//    outCmd = "? (192.168.2.222) at 00:17:61:10:a9:47 [ether] on eth0\n";

    if(error.isEmpty()) {
        QRegularExpression re(QStringLiteral("([a-fA-F0-9][a-fA-F0-9]:){5}[0-9a-fA-F][0-9a-fA-F]"));
        QRegularExpressionMatch match = re.match(outCmd);
        if(match.hasMatch()){
            return match.captured(0);
        }
    }
    return "";
}