Android Open Source - mac-hopper Mac Utils

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License

The source code is released under:

MIT License

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Java Source Code

package uk.co.danhawkes.machopper.mac;
/* ww w. jav  a2 s .  c o  m*/
import java.io.IOException;
import java.util.concurrent.TimeoutException;

import uk.co.danhawkes.machopper.AppSingleton;
import uk.co.danhawkes.machopper.Store;
import android.content.Context;
import android.content.Intent;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import com.stericson.RootTools.RootTools;
import com.stericson.RootTools.exceptions.RootDeniedException;
import com.stericson.RootTools.execution.CommandCapture;

public class MacUtils {

  private static final String COMMAND_TEMPLATE = "ip link set %1$s down; ip link set %1$s address %2$s; ip link set %1$s up";
  public static final String EXTRA_MAC = "MAC";

  public static class MacChangedEvent {
    private final Mac mac;

    public MacChangedEvent(Mac mac) {
      this.mac = mac;
    }

    public Mac getMac() {
      return mac;
    }
  }

  public static void setMac(final Mac mac, Context context, Store store) {
    AppSingleton.getLogger().log("Set MAC to " + mac + ".");
    try {
      RootTools.getShell(true).add(getSetMacCommand("wlan0", mac)).waitForFinish();

      // Save changed MAC to disk
      store.saveCurrentMac(mac);

      // Send broadcast to update UI
      AppSingleton.getBus().post(new MacChangedEvent(mac));

    } catch (InterruptedException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    } catch (TimeoutException e) {
      e.printStackTrace();
    } catch (RootDeniedException e) {
      e.printStackTrace();
    }
  }

  private static CommandCapture getSetMacCommand(String interfac, Mac mac) {
    String command = String.format(COMMAND_TEMPLATE, interfac, mac.toString());
    return new CommandCapture(0, command);
  }

  public static Mac getRealMac(Context context) {
    WifiManager wifiMan = ((WifiManager) context.getSystemService(Context.WIFI_SERVICE));
    WifiInfo connInfo = wifiMan.getConnectionInfo();
    if (connInfo != null) {
      String macString = connInfo.getMacAddress();
      if (macString != null) {
        return Mac.fromString(macString);
      }
    }
    return null;
  }

  public static Mac getCurrentMac(Context context, Store store) {
    Mac savedCurrentMac = store.loadCurrentMac();
    if (savedCurrentMac != null) {
      return savedCurrentMac;
    } else {
      return getRealMac(context);
    }
  }

  public static Intent newChangeMacIntent(Mac mac) {
    Intent i = new Intent(MacChangeBroadcastReceiver.ACTION_SET_MAC);
    i.putExtra(MacChangeBroadcastReceiver.EXTRA_MAC, mac);
    return i;
  }

  public static Intent newChangeMacIntent() {
    return new Intent(MacChangeBroadcastReceiver.ACTION_SET_MAC);
  }
}

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