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      1 /*
      2 * Copyright (C) 2015 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.packageinstaller.permission.ui.handheld;
     18 
     19 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
     20 
     21 import android.app.ActionBar;
     22 import android.app.Activity;
     23 import android.app.AlertDialog;
     24 import android.app.Fragment;
     25 import android.content.Context;
     26 import android.content.DialogInterface;
     27 import android.content.Intent;
     28 import android.content.pm.ApplicationInfo;
     29 import android.content.pm.PackageInfo;
     30 import android.content.pm.PackageManager;
     31 import android.graphics.drawable.Drawable;
     32 import android.net.Uri;
     33 import android.os.Bundle;
     34 import android.preference.Preference;
     35 import android.preference.Preference.OnPreferenceChangeListener;
     36 import android.preference.Preference.OnPreferenceClickListener;
     37 import android.preference.PreferenceScreen;
     38 import android.preference.SwitchPreference;
     39 import android.provider.Settings;
     40 import android.util.IconDrawableFactory;
     41 import android.util.Log;
     42 import android.view.Menu;
     43 import android.view.MenuInflater;
     44 import android.view.MenuItem;
     45 import android.view.View;
     46 import android.widget.Switch;
     47 import android.widget.Toast;
     48 
     49 import com.android.packageinstaller.R;
     50 import com.android.packageinstaller.permission.model.AppPermissionGroup;
     51 import com.android.packageinstaller.permission.model.AppPermissions;
     52 import com.android.packageinstaller.permission.model.Permission;
     53 import com.android.packageinstaller.permission.utils.LocationUtils;
     54 import com.android.packageinstaller.permission.utils.SafetyNetLogger;
     55 import com.android.packageinstaller.permission.utils.Utils;
     56 import com.android.settingslib.HelpUtils;
     57 import com.android.settingslib.RestrictedLockUtils;
     58 
     59 import java.util.ArrayList;
     60 import java.util.List;
     61 
     62 public final class AppPermissionsFragment extends SettingsWithHeader
     63         implements OnPreferenceChangeListener {
     64 
     65     private static final String LOG_TAG = "ManagePermsFragment";
     66 
     67     static final String EXTRA_HIDE_INFO_BUTTON = "hideInfoButton";
     68 
     69     private static final int MENU_ALL_PERMS = 0;
     70 
     71     private List<AppPermissionGroup> mToggledGroups;
     72     private AppPermissions mAppPermissions;
     73     private PreferenceScreen mExtraScreen;
     74 
     75     private boolean mHasConfirmedRevoke;
     76 
     77     public static AppPermissionsFragment newInstance(String packageName) {
     78         return setPackageName(new AppPermissionsFragment(), packageName);
     79     }
     80 
     81     private static <T extends Fragment> T setPackageName(T fragment, String packageName) {
     82         Bundle arguments = new Bundle();
     83         arguments.putString(Intent.EXTRA_PACKAGE_NAME, packageName);
     84         fragment.setArguments(arguments);
     85         return fragment;
     86     }
     87 
     88     @Override
     89     public void onCreate(Bundle savedInstanceState) {
     90         super.onCreate(savedInstanceState);
     91         setLoading(true /* loading */, false /* animate */);
     92         setHasOptionsMenu(true);
     93         final ActionBar ab = getActivity().getActionBar();
     94         if (ab != null) {
     95             ab.setDisplayHomeAsUpEnabled(true);
     96         }
     97 
     98         String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
     99         Activity activity = getActivity();
    100         PackageInfo packageInfo = getPackageInfo(activity, packageName);
    101         if (packageInfo == null) {
    102             Toast.makeText(activity, R.string.app_not_found_dlg_title, Toast.LENGTH_LONG).show();
    103             activity.finish();
    104             return;
    105         }
    106 
    107         mAppPermissions = new AppPermissions(activity, packageInfo, null, true, new Runnable() {
    108             @Override
    109             public void run() {
    110                 getActivity().finish();
    111             }
    112         });
    113         loadPreferences();
    114     }
    115 
    116     @Override
    117     public void onResume() {
    118         super.onResume();
    119         mAppPermissions.refresh();
    120         loadPreferences();
    121         setPreferencesCheckedState();
    122     }
    123 
    124     @Override
    125     public boolean onOptionsItemSelected(MenuItem item) {
    126         switch (item.getItemId()) {
    127             case android.R.id.home: {
    128                 getActivity().finish();
    129                 return true;
    130             }
    131 
    132             case MENU_ALL_PERMS: {
    133                 showAllPermissions(null);
    134                 return true;
    135             }
    136         }
    137         return super.onOptionsItemSelected(item);
    138     }
    139 
    140     @Override
    141     public void onViewCreated(View view, Bundle savedInstanceState) {
    142         super.onViewCreated(view, savedInstanceState);
    143         if (mAppPermissions != null) {
    144             bindUi(this, mAppPermissions.getPackageInfo());
    145         }
    146     }
    147 
    148     @Override
    149     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    150         super.onCreateOptionsMenu(menu, inflater);
    151         menu.add(Menu.NONE, MENU_ALL_PERMS, Menu.NONE, R.string.all_permissions);
    152         HelpUtils.prepareHelpMenuItem(getActivity(), menu, R.string.help_app_permissions,
    153                 getClass().getName());
    154     }
    155 
    156     private void showAllPermissions(String filterGroup) {
    157         Fragment frag = AllAppPermissionsFragment.newInstance(
    158                 getArguments().getString(Intent.EXTRA_PACKAGE_NAME),
    159                 filterGroup);
    160         getFragmentManager().beginTransaction()
    161                 .replace(android.R.id.content, frag)
    162                 .addToBackStack("AllPerms")
    163                 .commit();
    164     }
    165 
    166     private static void bindUi(SettingsWithHeader fragment, PackageInfo packageInfo) {
    167         Activity activity = fragment.getActivity();
    168         PackageManager pm = activity.getPackageManager();
    169         ApplicationInfo appInfo = packageInfo.applicationInfo;
    170         Intent infoIntent = null;
    171         if (!activity.getIntent().getBooleanExtra(EXTRA_HIDE_INFO_BUTTON, false)) {
    172             infoIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
    173                     .setData(Uri.fromParts("package", packageInfo.packageName, null));
    174         }
    175 
    176         Drawable icon = IconDrawableFactory.newInstance(activity).getBadgedIcon(appInfo);
    177         CharSequence label = appInfo.loadLabel(pm);
    178         fragment.setHeader(icon, label, infoIntent);
    179 
    180         ActionBar ab = activity.getActionBar();
    181         if (ab != null) {
    182             ab.setTitle(R.string.app_permissions);
    183         }
    184     }
    185 
    186     private void loadPreferences() {
    187         Context context = getActivity();
    188         if (context == null) {
    189             return;
    190         }
    191 
    192         PreferenceScreen screen = getPreferenceScreen();
    193         if (screen == null) {
    194             screen = getPreferenceManager().createPreferenceScreen(getActivity());
    195             setPreferenceScreen(screen);
    196         }
    197 
    198         screen.removeAll();
    199 
    200         if (mExtraScreen != null) {
    201             mExtraScreen.removeAll();
    202         }
    203 
    204         final Preference extraPerms = new Preference(context);
    205         extraPerms.setIcon(R.drawable.ic_toc);
    206         extraPerms.setTitle(R.string.additional_permissions);
    207 
    208         for (AppPermissionGroup group : mAppPermissions.getPermissionGroups()) {
    209             if (!Utils.shouldShowPermission(group, mAppPermissions.getPackageInfo().packageName)) {
    210                 continue;
    211             }
    212 
    213             boolean isPlatform = group.getDeclaringPackage().equals(Utils.OS_PKG);
    214 
    215             RestrictedSwitchPreference preference = new RestrictedSwitchPreference(context);
    216             preference.setChecked(group.areRuntimePermissionsGranted());
    217 
    218             // Some groups may be a double target - one to toggle and one to fine manage
    219             if (Utils.areGroupPermissionsIndividuallyControlled(getContext(), group.getName())) {
    220                 preference.setOnPreferenceClickListener((pref) -> {
    221                     showAllPermissions(group.getName());
    222                     return false;
    223                 });
    224 
    225                 preference.setSwitchOnClickListener(v -> {
    226                     Switch switchView = (Switch) v;
    227                     onPreferenceChange(preference, switchView.isChecked());
    228                     updateSummaryForIndividuallyControlledPermissionGroup(
    229                             group, preference);
    230                     preference.setCheckedOverride(switchView.isChecked());
    231                 });
    232 
    233                 updateSummaryForIndividuallyControlledPermissionGroup(group, preference);
    234             } else {
    235                 preference.setOnPreferenceChangeListener(this);
    236             }
    237 
    238             preference.setKey(group.getName());
    239             Drawable icon = Utils.loadDrawable(context.getPackageManager(),
    240                     group.getIconPkg(), group.getIconResId());
    241             preference.setIcon(Utils.applyTint(getContext(), icon,
    242                     android.R.attr.colorControlNormal));
    243             preference.setTitle(group.getLabel());
    244 
    245 
    246             if (group.isPolicyFixed()) {
    247                 EnforcedAdmin admin = RestrictedLockUtils.getProfileOrDeviceOwner(getContext(),
    248                         group.getUserId());
    249                 if (admin != null) {
    250                     preference.setDisabledByAdmin(admin);
    251                     preference.setSummary(R.string.disabled_by_admin_summary_text);
    252                 } else {
    253                     preference.setSummary(R.string.permission_summary_enforced_by_policy);
    254                     preference.setEnabled(false);
    255                 }
    256             }
    257             preference.setPersistent(false);
    258 
    259             if (isPlatform) {
    260                 screen.addPreference(preference);
    261             } else {
    262                 if (mExtraScreen == null) {
    263                     mExtraScreen = getPreferenceManager().createPreferenceScreen(context);
    264                 }
    265                 mExtraScreen.addPreference(preference);
    266             }
    267         }
    268 
    269         if (mExtraScreen != null) {
    270             extraPerms.setOnPreferenceClickListener(new OnPreferenceClickListener() {
    271                 @Override
    272                 public boolean onPreferenceClick(Preference preference) {
    273                     AdditionalPermissionsFragment frag = new AdditionalPermissionsFragment();
    274                     setPackageName(frag, getArguments().getString(Intent.EXTRA_PACKAGE_NAME));
    275                     frag.setTargetFragment(AppPermissionsFragment.this, 0);
    276                     getFragmentManager().beginTransaction()
    277                             .replace(android.R.id.content, frag)
    278                             .addToBackStack(null)
    279                             .commit();
    280                     return true;
    281                 }
    282             });
    283             int count = mExtraScreen.getPreferenceCount();
    284             extraPerms.setSummary(getResources().getQuantityString(
    285                     R.plurals.additional_permissions_more, count, count));
    286             screen.addPreference(extraPerms);
    287         }
    288 
    289         setLoading(false /* loading */, true /* animate */);
    290     }
    291 
    292     @Override
    293     public boolean onPreferenceChange(final Preference preference, Object newValue) {
    294         String groupName = preference.getKey();
    295         final AppPermissionGroup group = mAppPermissions.getPermissionGroup(groupName);
    296 
    297         if (group == null) {
    298             return false;
    299         }
    300 
    301         addToggledGroup(group);
    302 
    303         if (LocationUtils.isLocationGroupAndProvider(group.getName(), group.getApp().packageName)) {
    304             LocationUtils.showLocationDialog(getContext(), mAppPermissions.getAppLabel());
    305             return false;
    306         }
    307         if (newValue == Boolean.TRUE) {
    308             group.grantRuntimePermissions(false);
    309         } else {
    310             final boolean grantedByDefault = group.hasGrantedByDefaultPermission();
    311             if (grantedByDefault || (!group.doesSupportRuntimePermissions()
    312                     && !mHasConfirmedRevoke)) {
    313                 new AlertDialog.Builder(getContext())
    314                         .setMessage(grantedByDefault ? R.string.system_warning
    315                                 : R.string.old_sdk_deny_warning)
    316                         .setNegativeButton(R.string.cancel, (DialogInterface dialog, int which) -> {
    317                             if (preference instanceof MultiTargetSwitchPreference) {
    318                                 ((MultiTargetSwitchPreference) preference).setCheckedOverride(true);
    319                             }
    320                         })
    321                         .setPositiveButton(R.string.grant_dialog_button_deny_anyway,
    322                                 (DialogInterface dialog, int which) -> {
    323                             ((SwitchPreference) preference).setChecked(false);
    324                             group.revokeRuntimePermissions(false);
    325                             if (Utils.areGroupPermissionsIndividuallyControlled(getContext(),
    326                                     group.getName())) {
    327                                 updateSummaryForIndividuallyControlledPermissionGroup(
    328                                         group, preference);
    329                             }
    330                             if (!grantedByDefault) {
    331                                 mHasConfirmedRevoke = true;
    332                             }
    333                         })
    334                         .show();
    335                 return false;
    336             } else {
    337                 group.revokeRuntimePermissions(false);
    338             }
    339         }
    340 
    341         return true;
    342     }
    343 
    344     @Override
    345     public void onPause() {
    346         super.onPause();
    347         logToggledGroups();
    348     }
    349 
    350     private void updateSummaryForIndividuallyControlledPermissionGroup(
    351             AppPermissionGroup group, Preference preference) {
    352         int revokedCount = 0;
    353         List<Permission> permissions = group.getPermissions();
    354         final int permissionCount = permissions.size();
    355         for (int i = 0; i < permissionCount; i++) {
    356             Permission permission = permissions.get(i);
    357             if (group.doesSupportRuntimePermissions()
    358                     ? !permission.isGranted() : !permission.isAppOpAllowed()) {
    359                 revokedCount++;
    360             }
    361         }
    362 
    363         final int resId;
    364         if (revokedCount == 0) {
    365             resId = R.string.permission_revoked_none;
    366         } else if (revokedCount == permissionCount) {
    367             resId = R.string.permission_revoked_all;
    368         } else {
    369             resId = R.string.permission_revoked_count;
    370         }
    371 
    372         String summary = getString(resId, revokedCount);
    373         preference.setSummary(summary);
    374     }
    375 
    376     private void addToggledGroup(AppPermissionGroup group) {
    377         if (mToggledGroups == null) {
    378             mToggledGroups = new ArrayList<>();
    379         }
    380         // Double toggle is back to initial state.
    381         if (mToggledGroups.contains(group)) {
    382             mToggledGroups.remove(group);
    383         } else {
    384             mToggledGroups.add(group);
    385         }
    386     }
    387 
    388     private void logToggledGroups() {
    389         if (mToggledGroups != null) {
    390             String packageName = mAppPermissions.getPackageInfo().packageName;
    391             SafetyNetLogger.logPermissionsToggled(packageName, mToggledGroups);
    392             mToggledGroups = null;
    393         }
    394     }
    395 
    396     private void setPreferencesCheckedState() {
    397         setPreferencesCheckedState(getPreferenceScreen());
    398         if (mExtraScreen != null) {
    399             setPreferencesCheckedState(mExtraScreen);
    400         }
    401     }
    402 
    403     private void setPreferencesCheckedState(PreferenceScreen screen) {
    404         int preferenceCount = screen.getPreferenceCount();
    405         for (int i = 0; i < preferenceCount; i++) {
    406             Preference preference = screen.getPreference(i);
    407             if (preference instanceof SwitchPreference) {
    408                 SwitchPreference switchPref = (SwitchPreference) preference;
    409                 AppPermissionGroup group = mAppPermissions.getPermissionGroup(switchPref.getKey());
    410                 if (group != null) {
    411                     switchPref.setChecked(group.areRuntimePermissionsGranted());
    412                 }
    413             }
    414         }
    415     }
    416 
    417     private static PackageInfo getPackageInfo(Activity activity, String packageName) {
    418         try {
    419             return activity.getPackageManager().getPackageInfo(
    420                     packageName, PackageManager.GET_PERMISSIONS);
    421         } catch (PackageManager.NameNotFoundException e) {
    422             Log.i(LOG_TAG, "No package:" + activity.getCallingPackage(), e);
    423             return null;
    424         }
    425     }
    426 
    427     public static class AdditionalPermissionsFragment extends SettingsWithHeader {
    428         AppPermissionsFragment mOuterFragment;
    429 
    430         @Override
    431         public void onCreate(Bundle savedInstanceState) {
    432             mOuterFragment = (AppPermissionsFragment) getTargetFragment();
    433             super.onCreate(savedInstanceState);
    434             setHeader(mOuterFragment.mIcon, mOuterFragment.mLabel, mOuterFragment.mInfoIntent);
    435             setHasOptionsMenu(true);
    436             setPreferenceScreen(mOuterFragment.mExtraScreen);
    437         }
    438 
    439         @Override
    440         public void onViewCreated(View view, Bundle savedInstanceState) {
    441             super.onViewCreated(view, savedInstanceState);
    442             String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
    443             bindUi(this, getPackageInfo(getActivity(), packageName));
    444         }
    445 
    446         @Override
    447         public boolean onOptionsItemSelected(MenuItem item) {
    448             switch (item.getItemId()) {
    449             case android.R.id.home:
    450                 getFragmentManager().popBackStack();
    451                 return true;
    452             }
    453             return super.onOptionsItemSelected(item);
    454         }
    455     }
    456 }
    457