692 lines
25 KiB
Java
692 lines
25 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.wifi;
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import com.android.settings.R;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.StateListDrawable;
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import android.net.NetworkInfo.DetailedState;
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import android.net.wifi.ScanResult;
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import android.net.wifi.WifiConfiguration;
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import android.net.wifi.WifiConfiguration.KeyMgmt;
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import android.net.wifi.WifiInfo;
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import android.net.wifi.WifiManager;
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import android.os.Bundle;
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import android.preference.Preference;
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import android.util.Log;
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import android.util.LruCache;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.TextView;
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import java.util.Map;
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class AccessPoint extends Preference {
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static final String TAG = "Settings.AccessPoint";
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/**
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* Lower bound on the 2.4 GHz (802.11b/g/n) WLAN channels
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*/
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public static final int LOWER_FREQ_24GHZ = 2400;
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/**
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* Upper bound on the 2.4 GHz (802.11b/g/n) WLAN channels
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*/
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public static final int HIGHER_FREQ_24GHZ = 2500;
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/**
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* Lower bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels
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*/
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public static final int LOWER_FREQ_5GHZ = 4900;
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/**
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* Upper bound on the 5.0 GHz (802.11a/h/j/n/ac) WLAN channels
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*/
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public static final int HIGHER_FREQ_5GHZ = 5900;
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/**
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* Experimental: we should be able to show the user the list of BSSIDs and bands
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* for that SSID.
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* For now this data is used only with Verbose Logging so as to show the band and number
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* of BSSIDs on which that network is seen.
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*/
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public LruCache<String, ScanResult> mScanResultCache;
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private static final String KEY_DETAILEDSTATE = "key_detailedstate";
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private static final String KEY_WIFIINFO = "key_wifiinfo";
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private static final String KEY_SCANRESULT = "key_scanresult";
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private static final String KEY_CONFIG = "key_config";
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private static final int[] STATE_SECURED = {
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R.attr.state_encrypted
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};
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private static final int[] STATE_NONE = {};
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private static int[] wifi_signal_attributes = { R.attr.wifi_signal };
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/**
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* These values are matched in string arrays -- changes must be kept in sync
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*/
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static final int SECURITY_NONE = 0;
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static final int SECURITY_WEP = 1;
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static final int SECURITY_PSK = 2;
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static final int SECURITY_EAP = 3;
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enum PskType {
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UNKNOWN,
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WPA,
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WPA2,
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WPA_WPA2
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}
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String ssid;
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String bssid;
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int security;
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int networkId = -1;
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boolean wpsAvailable = false;
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boolean showSummary = true;
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PskType pskType = PskType.UNKNOWN;
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private WifiConfiguration mConfig;
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/* package */ScanResult mScanResult;
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private int mRssi = Integer.MAX_VALUE;
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private long mSeen = 0;
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private WifiInfo mInfo;
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private DetailedState mState;
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private static final int VISIBILITY_MAX_AGE_IN_MILLI = 1000000;
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private static final int VISIBILITY_OUTDATED_AGE_IN_MILLI = 20000;
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private static final int SECOND_TO_MILLI = 1000;
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static int getSecurity(WifiConfiguration config) {
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if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
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return SECURITY_PSK;
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}
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if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) ||
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config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) {
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return SECURITY_EAP;
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}
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return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE;
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}
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private static int getSecurity(ScanResult result) {
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if (result.capabilities.contains("WEP")) {
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return SECURITY_WEP;
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} else if (result.capabilities.contains("PSK")) {
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return SECURITY_PSK;
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} else if (result.capabilities.contains("EAP")) {
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return SECURITY_EAP;
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}
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return SECURITY_NONE;
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}
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public String getSecurityString(boolean concise) {
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Context context = getContext();
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switch(security) {
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case SECURITY_EAP:
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return concise ? context.getString(R.string.wifi_security_short_eap) :
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context.getString(R.string.wifi_security_eap);
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case SECURITY_PSK:
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switch (pskType) {
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case WPA:
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return concise ? context.getString(R.string.wifi_security_short_wpa) :
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context.getString(R.string.wifi_security_wpa);
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case WPA2:
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return concise ? context.getString(R.string.wifi_security_short_wpa2) :
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context.getString(R.string.wifi_security_wpa2);
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case WPA_WPA2:
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return concise ? context.getString(R.string.wifi_security_short_wpa_wpa2) :
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context.getString(R.string.wifi_security_wpa_wpa2);
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case UNKNOWN:
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default:
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return concise ? context.getString(R.string.wifi_security_short_psk_generic)
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: context.getString(R.string.wifi_security_psk_generic);
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}
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case SECURITY_WEP:
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return concise ? context.getString(R.string.wifi_security_short_wep) :
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context.getString(R.string.wifi_security_wep);
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case SECURITY_NONE:
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default:
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return concise ? "" : context.getString(R.string.wifi_security_none);
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}
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}
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private static PskType getPskType(ScanResult result) {
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boolean wpa = result.capabilities.contains("WPA-PSK");
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boolean wpa2 = result.capabilities.contains("WPA2-PSK");
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if (wpa2 && wpa) {
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return PskType.WPA_WPA2;
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} else if (wpa2) {
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return PskType.WPA2;
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} else if (wpa) {
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return PskType.WPA;
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} else {
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Log.w(TAG, "Received abnormal flag string: " + result.capabilities);
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return PskType.UNKNOWN;
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}
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}
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AccessPoint(Context context, WifiConfiguration config) {
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super(context);
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loadConfig(config);
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refresh();
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}
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AccessPoint(Context context, ScanResult result) {
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super(context);
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loadResult(result);
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refresh();
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}
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AccessPoint(Context context, Bundle savedState) {
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super(context);
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mConfig = savedState.getParcelable(KEY_CONFIG);
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if (mConfig != null) {
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loadConfig(mConfig);
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}
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mScanResult = (ScanResult) savedState.getParcelable(KEY_SCANRESULT);
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if (mScanResult != null) {
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loadResult(mScanResult);
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}
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mInfo = (WifiInfo) savedState.getParcelable(KEY_WIFIINFO);
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if (savedState.containsKey(KEY_DETAILEDSTATE)) {
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mState = DetailedState.valueOf(savedState.getString(KEY_DETAILEDSTATE));
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}
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update(mInfo, mState);
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}
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public void saveWifiState(Bundle savedState) {
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savedState.putParcelable(KEY_CONFIG, mConfig);
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savedState.putParcelable(KEY_SCANRESULT, mScanResult);
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savedState.putParcelable(KEY_WIFIINFO, mInfo);
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if (mState != null) {
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savedState.putString(KEY_DETAILEDSTATE, mState.toString());
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}
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}
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private void loadConfig(WifiConfiguration config) {
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ssid = (config.SSID == null ? "" : removeDoubleQuotes(config.SSID));
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bssid = config.BSSID;
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security = getSecurity(config);
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networkId = config.networkId;
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mConfig = config;
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}
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private void loadResult(ScanResult result) {
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ssid = result.SSID;
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bssid = result.BSSID;
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security = getSecurity(result);
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wpsAvailable = security != SECURITY_EAP && result.capabilities.contains("WPS");
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if (security == SECURITY_PSK)
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pskType = getPskType(result);
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mRssi = result.level;
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mScanResult = result;
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if (result.seen > mSeen) {
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mSeen = result.seen;
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}
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}
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@Override
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protected void onBindView(View view) {
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super.onBindView(view);
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updateIcon(getLevel(), getContext());
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final TextView summaryView = (TextView) view.findViewById(
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com.android.internal.R.id.summary);
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summaryView.setVisibility(showSummary ? View.VISIBLE : View.GONE);
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notifyChanged();
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}
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protected void updateIcon(int level, Context context) {
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if (level == -1) {
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setIcon(null);
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} else {
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Drawable drawable = getIcon();
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if (drawable == null) {
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// To avoid a drawing race condition, we first set the state (SECURE/NONE) and then
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// set the icon (drawable) to that state's drawable.
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StateListDrawable sld = (StateListDrawable) context.getTheme()
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.obtainStyledAttributes(wifi_signal_attributes).getDrawable(0);
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// If sld is null then we are indexing and therefore do not have access to
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// (nor need to display) the drawable.
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if (sld != null) {
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sld.setState((security != SECURITY_NONE) ? STATE_SECURED : STATE_NONE);
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drawable = sld.getCurrent();
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setIcon(drawable);
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}
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}
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if (drawable != null) {
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drawable.setLevel(level);
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}
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}
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}
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public void showAppIcon() {
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PackageManager pm = getContext().getPackageManager();
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String systemName = pm.getNameForUid(android.os.Process.SYSTEM_UID);
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Drawable drawable = pm.getDefaultActivityIcon();
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if (mConfig == null) {
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drawable.setAlpha(0);
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} else if (mConfig.creatorName.equals(systemName)) {
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drawable = getContext().getApplicationInfo().loadIcon(pm);
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} else {
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try {
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drawable = pm.getApplicationIcon(mConfig.creatorName);
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} catch (NameNotFoundException nnfe) {
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// use default app icon
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}
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}
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setIcon(drawable);
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}
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@Override
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public int compareTo(Preference preference) {
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if (!(preference instanceof AccessPoint)) {
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return 1;
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}
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AccessPoint other = (AccessPoint) preference;
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// Active one goes first.
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if (mInfo != null && other.mInfo == null) return -1;
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if (mInfo == null && other.mInfo != null) return 1;
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// Reachable one goes before unreachable one.
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if (mRssi != Integer.MAX_VALUE && other.mRssi == Integer.MAX_VALUE) return -1;
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if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1;
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if (mRssi == Integer.MAX_VALUE && other.mRssi != Integer.MAX_VALUE) return 1;
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// Configured one goes before unconfigured one.
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if (networkId != WifiConfiguration.INVALID_NETWORK_ID
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&& other.networkId == WifiConfiguration.INVALID_NETWORK_ID) return -1;
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if (networkId == WifiConfiguration.INVALID_NETWORK_ID
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&& other.networkId != WifiConfiguration.INVALID_NETWORK_ID) return 1;
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// Sort by signal strength.
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int difference = WifiManager.compareSignalLevel(other.mRssi, mRssi);
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if (difference != 0) {
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return difference;
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}
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// Sort by ssid.
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return ssid.compareToIgnoreCase(other.ssid);
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}
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@Override
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public boolean equals(Object other) {
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if (!(other instanceof AccessPoint)) return false;
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return (this.compareTo((AccessPoint) other) == 0);
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}
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@Override
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public int hashCode() {
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int result = 0;
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if (mInfo != null) result += 13 * mInfo.hashCode();
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result += 19 * mRssi;
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result += 23 * networkId;
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result += 29 * ssid.hashCode();
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return result;
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}
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boolean update(ScanResult result) {
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if (result.seen > mSeen) {
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mSeen = result.seen;
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}
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if (WifiSettings.mVerboseLogging > 0) {
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if (mScanResultCache == null) {
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mScanResultCache = new LruCache<String, ScanResult>(32);
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}
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mScanResultCache.put(result.BSSID, result);
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}
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if (ssid.equals(result.SSID) && security == getSecurity(result)) {
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if (WifiManager.compareSignalLevel(result.level, mRssi) > 0) {
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int oldLevel = getLevel();
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mRssi = result.level;
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if (getLevel() != oldLevel) {
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notifyChanged();
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}
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}
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// This flag only comes from scans, is not easily saved in config
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if (security == SECURITY_PSK) {
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pskType = getPskType(result);
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}
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mScanResult = result;
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refresh();
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return true;
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}
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return false;
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}
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void update(WifiInfo info, DetailedState state) {
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boolean reorder = false;
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if (info != null && networkId != WifiConfiguration.INVALID_NETWORK_ID
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&& networkId == info.getNetworkId()) {
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reorder = (mInfo == null);
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mRssi = info.getRssi();
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mInfo = info;
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mState = state;
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refresh();
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} else if (mInfo != null) {
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reorder = true;
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mInfo = null;
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mState = null;
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refresh();
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}
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if (reorder) {
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notifyHierarchyChanged();
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}
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}
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int getLevel() {
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if (mRssi == Integer.MAX_VALUE) {
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return -1;
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}
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return WifiManager.calculateSignalLevel(mRssi, 4);
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}
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WifiConfiguration getConfig() {
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return mConfig;
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}
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WifiInfo getInfo() {
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return mInfo;
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}
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DetailedState getState() {
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return mState;
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}
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static String removeDoubleQuotes(String string) {
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int length = string.length();
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if ((length > 1) && (string.charAt(0) == '"')
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&& (string.charAt(length - 1) == '"')) {
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return string.substring(1, length - 1);
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}
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return string;
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}
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static String convertToQuotedString(String string) {
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return "\"" + string + "\"";
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}
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/**
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* Shows or Hides the Summary of an AccessPoint.
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*
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* @param showSummary true will show the summary, false will hide the summary
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*/
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public void setShowSummary(boolean showSummary){
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this.showSummary = showSummary;
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}
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/**
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* Returns the visibility status of the WifiConfiguration.
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*
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* @return autojoin debugging information
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* TODO: use a string formatter
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* ["rssi 5Ghz", "num results on 5GHz" / "rssi 5Ghz", "num results on 5GHz"]
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* For instance [-40,5/-30,2]
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*/
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private String getVisibilityStatus() {
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StringBuilder visibility = new StringBuilder();
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StringBuilder scans24GHz = null;
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StringBuilder scans5GHz = null;
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String bssid = null;
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long now = System.currentTimeMillis();
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if (mInfo != null) {
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bssid = mInfo.getBSSID();
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if (bssid != null) {
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visibility.append(" ").append(bssid);
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}
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visibility.append(" score=").append(mInfo.score);
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visibility.append(" ");
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visibility.append(String.format("tx=%.1f,", mInfo.txSuccessRate));
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visibility.append(String.format("%.1f,", mInfo.txRetriesRate));
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visibility.append(String.format("%.1f ", mInfo.txBadRate));
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visibility.append(String.format("rx=%.1f", mInfo.rxSuccessRate));
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}
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if (mScanResultCache != null) {
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int rssi5 = WifiConfiguration.INVALID_RSSI;
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int rssi24 = WifiConfiguration.INVALID_RSSI;
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int num5 = 0;
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int num24 = 0;
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int numBlackListed = 0;
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int n24 = 0; // Number scan results we included in the string
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int n5 = 0; // Number scan results we included in the string
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Map<String, ScanResult> list = mScanResultCache.snapshot();
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// TODO: sort list by RSSI or age
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for (ScanResult result : list.values()) {
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if (result.seen == 0)
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continue;
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if (result.autoJoinStatus != ScanResult.ENABLED) numBlackListed++;
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if (result.frequency >= LOWER_FREQ_5GHZ
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&& result.frequency <= HIGHER_FREQ_5GHZ) {
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// Strictly speaking: [4915, 5825]
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// number of known BSSID on 5GHz band
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num5 = num5 + 1;
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} else if (result.frequency >= LOWER_FREQ_24GHZ
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&& result.frequency <= HIGHER_FREQ_24GHZ) {
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// Strictly speaking: [2412, 2482]
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// number of known BSSID on 2.4Ghz band
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num24 = num24 + 1;
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}
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// Ignore results seen, older than 20 seconds
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if (now - result.seen > VISIBILITY_OUTDATED_AGE_IN_MILLI) continue;
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if (result.frequency >= LOWER_FREQ_5GHZ
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&& result.frequency <= HIGHER_FREQ_5GHZ) {
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if (result.level > rssi5) {
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rssi5 = result.level;
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}
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if (n5 < 4) {
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if (scans5GHz == null) scans5GHz = new StringBuilder();
|
|
scans5GHz.append(" {").append(result.BSSID);
|
|
if (bssid != null && result.BSSID.equals(bssid)) scans5GHz.append("*");
|
|
scans5GHz.append("=").append(result.frequency);
|
|
scans5GHz.append(",").append(result.level);
|
|
if (result.autoJoinStatus != 0) {
|
|
scans5GHz.append(",st=").append(result.autoJoinStatus);
|
|
}
|
|
if (result.numIpConfigFailures != 0) {
|
|
scans5GHz.append(",ipf=").append(result.numIpConfigFailures);
|
|
}
|
|
scans5GHz.append("}");
|
|
n5++;
|
|
}
|
|
} else if (result.frequency >= LOWER_FREQ_24GHZ
|
|
&& result.frequency <= HIGHER_FREQ_24GHZ) {
|
|
if (result.level > rssi24) {
|
|
rssi24 = result.level;
|
|
}
|
|
if (n24 < 4) {
|
|
if (scans24GHz == null) scans24GHz = new StringBuilder();
|
|
scans24GHz.append(" {").append(result.BSSID);
|
|
if (bssid != null && result.BSSID.equals(bssid)) scans24GHz.append("*");
|
|
scans24GHz.append("=").append(result.frequency);
|
|
scans24GHz.append(",").append(result.level);
|
|
if (result.autoJoinStatus != 0) {
|
|
scans24GHz.append(",st=").append(result.autoJoinStatus);
|
|
}
|
|
if (result.numIpConfigFailures != 0) {
|
|
scans24GHz.append(",ipf=").append(result.numIpConfigFailures);
|
|
}
|
|
scans24GHz.append("}");
|
|
n24++;
|
|
}
|
|
}
|
|
}
|
|
visibility.append(" [");
|
|
if (num24 > 0) {
|
|
visibility.append("(").append(num24).append(")");
|
|
if (n24 <= 4) {
|
|
if (scans24GHz != null) {
|
|
visibility.append(scans24GHz.toString());
|
|
}
|
|
} else {
|
|
visibility.append("max=").append(rssi24);
|
|
if (scans24GHz != null) {
|
|
visibility.append(",").append(scans24GHz.toString());
|
|
}
|
|
}
|
|
}
|
|
visibility.append(";");
|
|
if (num5 > 0) {
|
|
visibility.append("(").append(num5).append(")");
|
|
if (n5 <= 4) {
|
|
if (scans5GHz != null) {
|
|
visibility.append(scans5GHz.toString());
|
|
}
|
|
} else {
|
|
visibility.append("max=").append(rssi5);
|
|
if (scans5GHz != null) {
|
|
visibility.append(",").append(scans5GHz.toString());
|
|
}
|
|
}
|
|
}
|
|
if (numBlackListed > 0)
|
|
visibility.append("!").append(numBlackListed);
|
|
visibility.append("]");
|
|
} else {
|
|
if (mRssi != Integer.MAX_VALUE) {
|
|
visibility.append(" rssi=");
|
|
visibility.append(mRssi);
|
|
if (mScanResult != null) {
|
|
visibility.append(", f=");
|
|
visibility.append(mScanResult.frequency);
|
|
}
|
|
}
|
|
}
|
|
|
|
return visibility.toString();
|
|
}
|
|
|
|
/**
|
|
* Updates the title and summary; may indirectly call notifyChanged().
|
|
*/
|
|
private void refresh() {
|
|
setTitle(ssid);
|
|
|
|
final Context context = getContext();
|
|
updateIcon(getLevel(), context);
|
|
|
|
// Force new summary
|
|
setSummary(null);
|
|
|
|
// Update to new summary
|
|
StringBuilder summary = new StringBuilder();
|
|
|
|
if (mState != null) { // This is the active connection
|
|
summary.append(Summary.get(context, mState));
|
|
} else if (mConfig != null && ((mConfig.status == WifiConfiguration.Status.DISABLED &&
|
|
mConfig.disableReason != WifiConfiguration.DISABLED_UNKNOWN_REASON)
|
|
|| mConfig.autoJoinStatus
|
|
>= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE)) {
|
|
if (mConfig.autoJoinStatus
|
|
>= WifiConfiguration.AUTO_JOIN_DISABLED_ON_AUTH_FAILURE) {
|
|
if (mConfig.disableReason == WifiConfiguration.DISABLED_DHCP_FAILURE) {
|
|
summary.append(context.getString(R.string.wifi_disabled_network_failure));
|
|
} else {
|
|
summary.append(context.getString(R.string.wifi_disabled_password_failure));
|
|
}
|
|
} else {
|
|
switch (mConfig.disableReason) {
|
|
case WifiConfiguration.DISABLED_AUTH_FAILURE:
|
|
summary.append(context.getString(R.string.wifi_disabled_password_failure));
|
|
break;
|
|
case WifiConfiguration.DISABLED_DHCP_FAILURE:
|
|
case WifiConfiguration.DISABLED_DNS_FAILURE:
|
|
summary.append(context.getString(R.string.wifi_disabled_network_failure));
|
|
break;
|
|
case WifiConfiguration.DISABLED_UNKNOWN_REASON:
|
|
case WifiConfiguration.DISABLED_ASSOCIATION_REJECT:
|
|
summary.append(context.getString(R.string.wifi_disabled_generic));
|
|
break;
|
|
}
|
|
}
|
|
} else if (mRssi == Integer.MAX_VALUE) { // Wifi out of range
|
|
summary.append(context.getString(R.string.wifi_not_in_range));
|
|
} else { // In range, not disabled.
|
|
if (mConfig != null) { // Is saved network
|
|
summary.append(context.getString(R.string.wifi_remembered));
|
|
}
|
|
}
|
|
|
|
if (WifiSettings.mVerboseLogging > 0) {
|
|
//add RSSI/band information for this config, what was seen up to 6 seconds ago
|
|
//verbose WiFi Logging is only turned on thru developers settings
|
|
if (mInfo != null && mState != null) { // This is the active connection
|
|
summary.append(" (f=" + Integer.toString(mInfo.getFrequency()) + ")");
|
|
}
|
|
summary.append(" " + getVisibilityStatus());
|
|
if (mConfig != null && mConfig.autoJoinStatus > 0) {
|
|
summary.append(" (" + mConfig.autoJoinStatus);
|
|
if (mConfig.blackListTimestamp > 0) {
|
|
long now = System.currentTimeMillis();
|
|
long diff = (now - mConfig.blackListTimestamp)/1000;
|
|
long sec = diff%60; //seconds
|
|
long min = (diff/60)%60; //minutes
|
|
long hour = (min/60)%60; //hours
|
|
summary.append(", ");
|
|
if (hour > 0) summary.append(Long.toString(hour) + "h ");
|
|
summary.append( Long.toString(min) + "m ");
|
|
summary.append( Long.toString(sec) + "s ");
|
|
}
|
|
summary.append(")");
|
|
}
|
|
}
|
|
|
|
if (summary.length() > 0) {
|
|
setSummary(summary.toString());
|
|
} else {
|
|
showSummary = false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate and save a default wifiConfiguration with common values.
|
|
* Can only be called for unsecured networks.
|
|
* @hide
|
|
*/
|
|
protected void generateOpenNetworkConfig() {
|
|
if (security != SECURITY_NONE)
|
|
throw new IllegalStateException();
|
|
if (mConfig != null)
|
|
return;
|
|
mConfig = new WifiConfiguration();
|
|
mConfig.SSID = AccessPoint.convertToQuotedString(ssid);
|
|
mConfig.allowedKeyManagement.set(KeyMgmt.NONE);
|
|
}
|
|
}
|