Lookup manufacturer info by MAC address using www macvendorlookup com API

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Last post show how to "Retrieve IP and MAC addresses of Android WiFi tethering clients from /proc/net/arp". This example show how to get vendor/manufacturer info of the associated MAC addresses.

(You can download runnable APK from link on bottom)


http://www.macvendorlookup.com/api provide API to lookup MAC Address Vendor/Manufacturer info.

Notice that this example havent handle error condition.


MainActivity.java
package com.blogspot.android_er.androidlistclient;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

Button btnRead;
TextView textResult;

ListView listViewNode;
ArrayList<Node> listNote;
ArrayAdapter<Node> adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnRead = (Button)findViewById(R.id.readclient);
textResult = (TextView)findViewById(R.id.result);

listViewNode = (ListView)findViewById(R.id.nodelist);
listNote = new ArrayList<>();
ArrayAdapter<Node> adapter =
new ArrayAdapter<Node>(
MainActivity.this,
android.R.layout.simple_list_item_1,
listNote);
listViewNode.setAdapter(adapter);

listViewNode.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Node node = (Node) parent.getAdapter().getItem(position);
Toast.makeText(MainActivity.this,
"MAC: " + node.mac + " " +
"IP: " + node.ip + " " +
"company: " + node.company + " " +
"country: " + node.country + " " +
"addressL1: " + node.addressL1 + " " +
"addressL2: " + node.addressL2 + " " +
"addressL3: " + node.addressL3 + " " +
"type: " + node.type + " " +
"startHex: " + node.startHex + " " +
"endHex: " + node.endHex + " " +
"startDec: " + node.startDec + " " +
"endDec: " + node.endDec,
Toast.LENGTH_SHORT).show();
}
});

btnRead.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
new TaskReadAddresses(listNote, listViewNode).execute();
}
});
}



class Node {
String ip;
String mac;

String jsonBody;
String startHex;
String endHex;
String startDec;
String endDec;
String company;
String addressL1;
String addressL2;
String addressL3;
String country;
String type;

String remark;

String queryString = "http://www.macvendorlookup.com/api/v2/";

Node(String ip, String mac){
this.ip = ip;
this.mac = mac;
queryMacVendorLookup();
}

@Override
public String toString() {
return "IP: " + ip + " " + "MAC: " + mac + " " + company + " " + remark;
}

private String sendQuery(String qMac) throws IOException{
String result = "";

URL searchURL = new URL(queryString + qMac);

HttpURLConnection httpURLConnection = (HttpURLConnection) searchURL.openConnection();

if(httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK){
InputStreamReader inputStreamReader = new InputStreamReader(httpURLConnection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(
inputStreamReader,
8192);

String line = null;
while((line = bufferedReader.readLine()) != null){
result += line;
}

bufferedReader.close();
}

return result;
}


private void ParseResult(String json){

try {
JSONArray jsonArray = new JSONArray(json);
JSONObject jsonObject = (JSONObject) jsonArray.get(0);
startHex = jsonObject.getString("startHex");
endHex = jsonObject.getString("endHex");
startDec = jsonObject.getString("startDec");
endDec = jsonObject.getString("endDec");
company = jsonObject.getString("company");
addressL1 = jsonObject.getString("addressL1");
addressL2 = jsonObject.getString("addressL2");
addressL3 = jsonObject.getString("addressL3");
country = jsonObject.getString("country");
type = jsonObject.getString("type");
remark = "OK";

} catch (JSONException e) {
e.printStackTrace();
remark = e.getMessage();
}

}

private void queryMacVendorLookup(){
try {
jsonBody = sendQuery(mac);
ParseResult(jsonBody);
} catch (IOException e) {
e.printStackTrace();
}
}
}

private class TaskReadAddresses extends AsyncTask<Void, Node, Void> {

ArrayList<Node> array;
ListView listView;

TaskReadAddresses(ArrayList<Node> array, ListView v){
listView = v;
this.array = array;
array.clear();
textResult.setText("querying...");
}

@Override
protected Void doInBackground(Void... params) {
readAddresses();

return null;
}

@Override
protected void onPostExecute(Void aVoid) {
textResult.setText("Done");
}

@Override
protected void onProgressUpdate(Node... values) {
listNote.add(values[0]);
((ArrayAdapter)(listView.getAdapter())).notifyDataSetChanged();

}

private void readAddresses() {

BufferedReader bufferedReader = null;

try {
bufferedReader = new BufferedReader(new FileReader("/proc/net/arp"));

String line;
while ((line = bufferedReader.readLine()) != null) {
String[] splitted = line.split(" +");
if (splitted != null && splitted.length >= 4) {
String ip = splitted[0];
String mac = splitted[3];
if (mac.matches("..:..:..:..:..:..")) {
Node thisNode = new Node(ip, mac);
publishProgress(thisNode);
}
}
}

} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally{
try {
bufferedReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}


layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout

android_layout_width="match_parent"
android_layout_height="match_parent"
android_padding="16dp"
android_orientation="vertical"
tools_context="com.blogspot.android_er.androidlistclient.MainActivity">

<TextView
android_layout_width="wrap_content"
android_layout_height="wrap_content"
android_layout_gravity="center_horizontal"
android_autoLink="web"
android_text="http://android-er.blogspot.com/"
android_textStyle="bold" />

<Button
android_id="@+id/readclient"
android_layout_width="match_parent"
android_layout_height="wrap_content"
android_textAllCaps="false"
android_text="Read Ip/MAC addresses"/>

<TextView
android_id="@+id/result"
android_layout_width="match_parent"
android_layout_height="wrap_content"/>

<ListView
android_id="@+id/nodelist"
android_layout_width="match_parent"
android_layout_height="wrap_content"/>
</LinearLayout>


uses-permission of "android.permission.INTERNET" is needed in AndroidManifest.xml

download filesDownload runnable APK .

Next:
- Get HostName of WiFi hotspot clients, and check if it is still connected.

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