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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.wifi;
     18 
     19 import android.Manifest.permission;
     20 import android.app.AlertDialog;
     21 import android.app.AppOpsManager;
     22 import android.content.Context;
     23 import android.os.Bundle;
     24 import android.support.v14.preference.SwitchPreference;
     25 import android.support.v7.preference.Preference;
     26 import android.support.v7.preference.Preference.OnPreferenceChangeListener;
     27 
     28 import com.android.internal.annotations.VisibleForTesting;
     29 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     30 import com.android.settings.applications.AppInfoWithHeader;
     31 import com.android.settings.applications.AppStateAppOpsBridge.PermissionState;
     32 import com.android.settings.R;
     33 import com.android.settings.overlay.FeatureFactory;
     34 
     35 import com.android.settings.wifi.AppStateChangeWifiStateBridge.WifiSettingsState;
     36 import com.android.settingslib.applications.ApplicationsState.AppEntry;
     37 import com.android.settingslib.applications.ApplicationsState.AppFilter;
     38 
     39 import static android.app.AppOpsManager.MODE_ALLOWED;
     40 import static android.app.AppOpsManager.MODE_IGNORED;
     41 
     42 public class ChangeWifiStateDetails extends AppInfoWithHeader
     43         implements OnPreferenceChangeListener {
     44 
     45     private static final String KEY_APP_OPS_SETTINGS_SWITCH = "app_ops_settings_switch";
     46     private static final String LOG_TAG = "ChangeWifiStateDetails";
     47 
     48     private AppStateChangeWifiStateBridge mAppBridge;
     49     private AppOpsManager mAppOpsManager;
     50     private SwitchPreference mSwitchPref;
     51     private WifiSettingsState mWifiSettingsState;
     52 
     53     @Override
     54     public void onCreate(Bundle savedInstanceState) {
     55         super.onCreate(savedInstanceState);
     56         final Context context = getActivity();
     57         mAppBridge = new AppStateChangeWifiStateBridge(context, mState, null);
     58         mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
     59 
     60         // find preferences
     61         addPreferencesFromResource(R.xml.change_wifi_state_details);
     62         mSwitchPref = (SwitchPreference) findPreference(KEY_APP_OPS_SETTINGS_SWITCH);
     63 
     64         // set title/summary for all of them
     65         mSwitchPref.setTitle(R.string.change_wifi_state_app_detail_switch);
     66 
     67         // install event listeners
     68         mSwitchPref.setOnPreferenceChangeListener(this);
     69     }
     70 
     71     @Override
     72     protected AlertDialog createDialog(int id, int errorCode) {
     73         return null;
     74     }
     75 
     76     @Override
     77     public int getMetricsCategory() {
     78         return MetricsEvent.CONFIGURE_WIFI;
     79     }
     80 
     81     @Override
     82     public boolean onPreferenceChange(Preference preference, Object newValue) {
     83         if (preference == mSwitchPref) {
     84             if (mWifiSettingsState != null && (Boolean) newValue
     85                     != mWifiSettingsState.isPermissible()) {
     86                 setCanChangeWifiState(!mWifiSettingsState.isPermissible());
     87                 refreshUi();
     88             }
     89             return true;
     90         }
     91         return false;
     92     }
     93 
     94     private void setCanChangeWifiState(boolean newState) {
     95         logSpecialPermissionChange(newState, mPackageName);
     96         mAppOpsManager.setMode(AppOpsManager.OP_CHANGE_WIFI_STATE,
     97                 mPackageInfo.applicationInfo.uid, mPackageName, newState
     98                         ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);
     99     }
    100 
    101     protected void logSpecialPermissionChange(boolean newState, String packageName) {
    102         int logCategory = newState ? MetricsEvent.APP_SPECIAL_PERMISSION_SETTINGS_CHANGE_ALLOW
    103                 : MetricsEvent.APP_SPECIAL_PERMISSION_SETTINGS_CHANGE_DENY;
    104         FeatureFactory.getFactory(getContext()).getMetricsFeatureProvider().action(getContext(),
    105                 logCategory, packageName);
    106     }
    107 
    108     @Override
    109     protected boolean refreshUi() {
    110         if (mPackageInfo == null || mPackageInfo.applicationInfo == null) {
    111             return false;
    112         }
    113         mWifiSettingsState = mAppBridge.getWifiSettingsInfo(mPackageName,
    114                 mPackageInfo.applicationInfo.uid);
    115 
    116         boolean canChange = mWifiSettingsState.isPermissible();
    117         mSwitchPref.setChecked(canChange);
    118         // you can't ask a user for a permission you didn't even declare!
    119         mSwitchPref.setEnabled(mWifiSettingsState.permissionDeclared);
    120         return true;
    121     }
    122 
    123     public static CharSequence getSummary(Context context, AppEntry entry) {
    124         WifiSettingsState state;
    125         if (entry.extraInfo instanceof WifiSettingsState) {
    126             state = (WifiSettingsState) entry.extraInfo;
    127         } else if (entry.extraInfo instanceof PermissionState) {
    128             state = new WifiSettingsState((PermissionState) entry.extraInfo);
    129         } else {
    130             state = new AppStateChangeWifiStateBridge(context, null, null).getWifiSettingsInfo(
    131                     entry.info.packageName, entry.info.uid);
    132         }
    133         return getSummary(context, state);
    134     }
    135 
    136     public static CharSequence getSummary(Context context, WifiSettingsState wifiSettingsState) {
    137         return context.getString(wifiSettingsState.isPermissible()
    138                 ? R.string.app_permission_summary_allowed
    139                 : R.string.app_permission_summary_not_allowed);
    140     }
    141 }
    142