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WifiApManager.java
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WifiApManager.java
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/*
* Copyright 2013 WhiteByte (Nick Russler, Ahmet Yueksektepe).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package info.whitebyte.hotspotmanager;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.util.ArrayList;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Build;
import android.os.Handler;
import android.provider.Settings;
import android.util.Log;
public class WifiApManager {
private final WifiManager mWifiManager;
private Context context;
public WifiApManager(Context context) {
this.context = context;
mWifiManager = (WifiManager) this.context.getSystemService(Context.WIFI_SERVICE);
}
/**
* Show write permission settings page to user if necessary or forced
* @param force show settings page even when rights are already granted
*/
public void showWritePermissionSettings(boolean force) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (force || !Settings.System.canWrite(this.context)) {
Intent intent = new Intent(android.provider.Settings.ACTION_MANAGE_WRITE_SETTINGS);
intent.setData(Uri.parse("package:" + this.context.getPackageName()));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
this.context.startActivity(intent);
}
}
}
/**
* Start AccessPoint mode with the specified
* configuration. If the radio is already running in
* AP mode, update the new configuration
* Note that starting in access point mode disables station
* mode operation
*
* @param wifiConfig SSID, security and channel details as part of WifiConfiguration
* @return {@code true} if the operation succeeds, {@code false} otherwise
*/
public boolean setWifiApEnabled(WifiConfiguration wifiConfig, boolean enabled) {
try {
if (enabled) { // disable WiFi in any case
mWifiManager.setWifiEnabled(false);
}
Method method = mWifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
return (Boolean) method.invoke(mWifiManager, wifiConfig, enabled);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return false;
}
}
/**
* Gets the Wi-Fi enabled state.
*
* @return {@link WIFI_AP_STATE}
* @see #isWifiApEnabled()
*/
public WIFI_AP_STATE getWifiApState() {
try {
Method method = mWifiManager.getClass().getMethod("getWifiApState");
int tmp = ((Integer) method.invoke(mWifiManager));
// Fix for Android 4
if (tmp >= 10) {
tmp = tmp - 10;
}
return WIFI_AP_STATE.class.getEnumConstants()[tmp];
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return WIFI_AP_STATE.WIFI_AP_STATE_FAILED;
}
}
/**
* Return whether Wi-Fi AP is enabled or disabled.
*
* @return {@code true} if Wi-Fi AP is enabled
* @hide Dont open yet
* @see #getWifiApState()
*/
public boolean isWifiApEnabled() {
return getWifiApState() == WIFI_AP_STATE.WIFI_AP_STATE_ENABLED;
}
/**
* Gets the Wi-Fi AP Configuration.
*
* @return AP details in {@link WifiConfiguration}
*/
public WifiConfiguration getWifiApConfiguration() {
try {
Method method = mWifiManager.getClass().getMethod("getWifiApConfiguration");
return (WifiConfiguration) method.invoke(mWifiManager);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return null;
}
}
/**
* Sets the Wi-Fi AP Configuration.
*
* @return {@code true} if the operation succeeded, {@code false} otherwise
*/
public boolean setWifiApConfiguration(WifiConfiguration wifiConfig) {
try {
Method method = mWifiManager.getClass().getMethod("setWifiApConfiguration", WifiConfiguration.class);
return (Boolean) method.invoke(mWifiManager, wifiConfig);
} catch (Exception e) {
Log.e(this.getClass().toString(), "", e);
return false;
}
}
/**
* Gets a list of the clients connected to the Hotspot, reachable timeout is 300
*
* @param onlyReachables {@code false} if the list should contain unreachable (probably disconnected) clients, {@code true} otherwise
* @param finishListener, Interface called when the scan method finishes
*/
public void getClientList(boolean onlyReachables, FinishScanListener finishListener) {
getClientList(onlyReachables, 300, finishListener);
}
/**
* Gets a list of the clients connected to the Hotspot
*
* @param onlyReachables {@code false} if the list should contain unreachable (probably disconnected) clients, {@code true} otherwise
* @param reachableTimeout Reachable Timout in miliseconds
* @param finishListener, Interface called when the scan method finishes
*/
public void getClientList(final boolean onlyReachables, final int reachableTimeout, final FinishScanListener finishListener) {
Runnable runnable = new Runnable() {
public void run() {
BufferedReader br = null;
final ArrayList<ClientScanResult> result = new ArrayList<ClientScanResult>();
try {
br = new BufferedReader(new FileReader("/proc/net/arp"));
String line;
while ((line = br.readLine()) != null) {
String[] splitted = line.split(" +");
if ((splitted != null) && (splitted.length >= 4)) {
// Basic sanity check
String mac = splitted[3];
if (mac.matches("..:..:..:..:..:..")) {
boolean isReachable = InetAddress.getByName(splitted[0]).isReachable(reachableTimeout);
if (!onlyReachables || isReachable) {
result.add(new ClientScanResult(splitted[0], splitted[3], splitted[5], isReachable));
}
}
}
}
} catch (Exception e) {
Log.e(this.getClass().toString(), e.toString());
} finally {
try {
br.close();
} catch (IOException e) {
Log.e(this.getClass().toString(), e.getMessage());
}
}
// Get a handler that can be used to post to the main thread
Handler mainHandler = new Handler(context.getMainLooper());
Runnable myRunnable = new Runnable() {
@Override
public void run() {
finishListener.onFinishScan(result);
}
};
mainHandler.post(myRunnable);
}
};
Thread mythread = new Thread(runnable);
mythread.start();
}
}