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.permissioncontroller.permission.ui.television;
18 
19 import static android.Manifest.permission_group.NOTIFICATIONS;
20 
21 import static com.android.permissioncontroller.Constants.INVALID_SESSION_ID;
22 import static com.android.permissioncontroller.hibernation.HibernationPolicyKt.isHibernationEnabled;
23 
24 import android.app.ActionBar;
25 import android.app.Activity;
26 import android.app.Application;
27 import android.content.Context;
28 import android.content.Intent;
29 import android.content.pm.PackageInfo;
30 import android.content.pm.PackageManager;
31 import android.graphics.drawable.Drawable;
32 import android.hardware.SensorPrivacyManager;
33 import android.net.Uri;
34 import android.os.Bundle;
35 import android.os.UserHandle;
36 import android.provider.Settings;
37 import android.text.BidiFormatter;
38 import android.util.ArraySet;
39 import android.util.Log;
40 import android.view.Menu;
41 import android.view.MenuInflater;
42 import android.view.MenuItem;
43 import android.view.View;
44 import android.widget.Toast;
45 
46 import androidx.lifecycle.ViewModelProvider;
47 import androidx.preference.Preference;
48 import androidx.preference.Preference.OnPreferenceClickListener;
49 import androidx.preference.PreferenceCategory;
50 import androidx.preference.PreferenceScreen;
51 import androidx.preference.PreferenceViewHolder;
52 import androidx.preference.SwitchPreference;
53 
54 import com.android.modules.utils.build.SdkLevel;
55 import com.android.permissioncontroller.R;
56 import com.android.permissioncontroller.permission.model.AppPermissionGroup;
57 import com.android.permissioncontroller.permission.model.AppPermissions;
58 import com.android.permissioncontroller.permission.model.livedatatypes.HibernationSettingState;
59 import com.android.permissioncontroller.permission.ui.ReviewPermissionsActivity;
60 import com.android.permissioncontroller.permission.ui.model.AppPermissionGroupsViewModel;
61 import com.android.permissioncontroller.permission.ui.model.AppPermissionGroupsViewModelFactory;
62 import com.android.permissioncontroller.permission.utils.KotlinUtils;
63 import com.android.permissioncontroller.permission.utils.LocationUtils;
64 import com.android.permissioncontroller.permission.utils.StringUtils;
65 import com.android.permissioncontroller.permission.utils.Utils;
66 import com.android.permissioncontroller.permission.utils.legacy.LegacySafetyNetLogger;
67 
68 public final class AppPermissionsFragment extends SettingsWithHeader
69         implements OnPreferenceClickListener {
70 
71     private static final String LOG_TAG = "ManagePermsFragment";
72 
73     static final String EXTRA_HIDE_INFO_BUTTON = "hideInfoButton";
74     private static final String AUTO_REVOKE_SWITCH_KEY = "_AUTO_REVOKE_SWITCH_KEY";
75     private static final String UNUSED_APPS_KEY = "_UNUSED_APPS_KEY";
76 
77     private static final int MENU_ALL_PERMS = 0;
78 
79     private ArraySet<AppPermissionGroup> mToggledGroups;
80     private AppPermissionGroupsViewModel mViewModel;
81     private AppPermissions mAppPermissions;
82     private PreferenceScreen mExtraScreen;
83 
84     private boolean mHasConfirmedRevoke;
85 
86     private SensorPrivacyManager mSensorPrivacyManager;
87     private final SensorPrivacyManager.OnSensorPrivacyChangedListener mPrivacyChangedListener =
88             (sensor, enabled) -> {
89                 mAppPermissions.refresh();
90                 setPreferencesCheckedState();
91             };
92 
newInstance(String packageName, UserHandle user)93     public static AppPermissionsFragment newInstance(String packageName, UserHandle user) {
94         return setPackage(new AppPermissionsFragment(), packageName, user);
95     }
96 
setPackage( T fragment, String packageName, UserHandle user)97     private static <T extends PermissionsFrameFragment> T setPackage(
98             T fragment, String packageName, UserHandle user) {
99         Bundle arguments = new Bundle();
100         arguments.putString(Intent.EXTRA_PACKAGE_NAME, packageName);
101         arguments.putParcelable(Intent.EXTRA_USER, user);
102         fragment.setArguments(arguments);
103         return fragment;
104     }
105 
106     @Override
onCreate(Bundle savedInstanceState)107     public void onCreate(Bundle savedInstanceState) {
108         super.onCreate(savedInstanceState);
109         setLoading(true /* loading */, false /* animate */);
110         setHasOptionsMenu(true);
111         final ActionBar ab = getActivity().getActionBar();
112         if (ab != null) {
113             ab.setDisplayHomeAsUpEnabled(true);
114         }
115 
116         final String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
117         final UserHandle user = getArguments().getParcelable(Intent.EXTRA_USER);
118 
119         Activity activity = getActivity();
120         PackageInfo packageInfo = getPackageInfo(activity, packageName);
121         if (packageName == null) {
122             Toast.makeText(activity, R.string.app_not_found_dlg_title, Toast.LENGTH_LONG).show();
123             getActivity().finish();
124             return;
125         }
126 
127         mAppPermissions = new AppPermissions(activity, packageInfo, true,
128                 () -> getActivity().finish());
129 
130         if (mAppPermissions.isReviewRequired()) {
131             Intent intent = new Intent(getActivity(), ReviewPermissionsActivity.class);
132             intent.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName);
133             intent.putExtra(Intent.EXTRA_USER, user);
134             startActivity(intent);
135             getActivity().finish();
136             return;
137         }
138 
139         if (SdkLevel.isAtLeastT()) {
140             mSensorPrivacyManager = getContext().getSystemService(SensorPrivacyManager.class);
141         }
142     }
143 
144     @Override
onResume()145     public void onResume() {
146         super.onResume();
147         final String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
148         final UserHandle user = getArguments().getParcelable(Intent.EXTRA_USER);
149 
150         AppPermissionGroupsViewModelFactory factory =
151                 new AppPermissionGroupsViewModelFactory(packageName, user, 0);
152         mViewModel = new ViewModelProvider(this, factory).get(AppPermissionGroupsViewModel.class);
153         mViewModel.getAutoRevokeLiveData().observe(this, this::setAutoRevokeToggleState);
154 
155         mAppPermissions.refresh();
156         loadPreferences();
157         setPreferencesCheckedState();
158         if (mSensorPrivacyManager != null) {
159             mSensorPrivacyManager.addSensorPrivacyListener(mPrivacyChangedListener);
160         }
161     }
162 
163     @Override
onOptionsItemSelected(MenuItem item)164     public boolean onOptionsItemSelected(MenuItem item) {
165         switch (item.getItemId()) {
166             case android.R.id.home: {
167                 getActivity().finish();
168                 return true;
169             }
170 
171             case MENU_ALL_PERMS: {
172                 PermissionsFrameFragment frag =
173                         AllAppPermissionsFragment.newInstance(
174                                 getArguments().getString(Intent.EXTRA_PACKAGE_NAME));
175                 getFragmentManager().beginTransaction()
176                         .replace(android.R.id.content, frag)
177                         .addToBackStack("AllPerms")
178                         .commit();
179                 return true;
180             }
181         }
182         return super.onOptionsItemSelected(item);
183     }
184 
185     @Override
onViewCreated(View view, Bundle savedInstanceState)186     public void onViewCreated(View view, Bundle savedInstanceState) {
187         super.onViewCreated(view, savedInstanceState);
188         if (mAppPermissions != null) {
189             bindUi(this,
190                 getArguments().getString(Intent.EXTRA_PACKAGE_NAME),
191                 getArguments().getParcelable(Intent.EXTRA_USER),
192                 R.string.app_permissions_decor_title);
193         }
194     }
195 
196     @Override
onCreateOptionsMenu(Menu menu, MenuInflater inflater)197     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
198         super.onCreateOptionsMenu(menu, inflater);
199         menu.add(Menu.NONE, MENU_ALL_PERMS, Menu.NONE, R.string.all_permissions);
200     }
201 
bindUi(SettingsWithHeader fragment, String packageName, UserHandle user, int decorTitleStringResId)202     static void bindUi(SettingsWithHeader fragment, String packageName,
203             UserHandle user, int decorTitleStringResId) {
204         final Activity activity = fragment.getActivity();
205         final Application application = activity.getApplication();
206 
207         CharSequence label = BidiFormatter.getInstance().unicodeWrap(
208                 KotlinUtils.INSTANCE.getPackageLabel(application, packageName, user));
209         Drawable icon= KotlinUtils.INSTANCE.getBadgedPackageIcon(application, packageName, user);
210 
211         Intent infoIntent = null;
212         if (!activity.getIntent().getBooleanExtra(EXTRA_HIDE_INFO_BUTTON, false)) {
213             infoIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
214                     .setData(Uri.fromParts("package", packageName, null));
215         }
216 
217         fragment.setHeader(icon, label, infoIntent, fragment.getString(
218                 R.string.additional_permissions_decor_title));
219     }
220 
loadPreferences()221     private void loadPreferences() {
222         Context context = getPreferenceManager().getContext();
223         if (context == null) {
224             return;
225         }
226 
227         PreferenceScreen screen = getPreferenceScreen();
228         screen.removeAll();
229         screen.addPreference(createHeaderLineTwoPreference(context));
230 
231         if (mExtraScreen != null) {
232             mExtraScreen.removeAll();
233             mExtraScreen = null;
234         }
235 
236         final Preference extraPerms = new Preference(context);
237         extraPerms.setIcon(R.drawable.ic_toc);
238         extraPerms.setTitle(R.string.additional_permissions);
239 
240         for (AppPermissionGroup group : mAppPermissions.getPermissionGroups()) {
241             if (!Utils.shouldShowPermission(getContext(), group)
242                     || group.getName().equals(NOTIFICATIONS)) {
243                 // Skip notification group on TV
244                 continue;
245             }
246 
247             boolean isPlatform = group.getDeclaringPackage().equals(Utils.OS_PKG);
248 
249             Preference preference = new Preference(context);
250             preference.setOnPreferenceClickListener(this);
251             preference.setKey(group.getName());
252             Drawable icon = Utils.loadDrawable(context.getPackageManager(),
253                     group.getIconPkg(), group.getIconResId());
254             preference.setIcon(Utils.applyTint(getContext(), icon,
255                     android.R.attr.colorControlNormal));
256             preference.setTitle(group.getLabel());
257             if (group.isSystemFixed()) {
258                 preference.setSummary(getString(R.string.permission_summary_enabled_system_fixed));
259             } else if (group.isPolicyFixed()) {
260                 preference.setSummary(getString(R.string.permission_summary_enforced_by_policy));
261             }
262             preference.setPersistent(false);
263             preference.setEnabled(!group.isSystemFixed() && !group.isPolicyFixed());
264 
265             if (isPlatform) {
266                 screen.addPreference(preference);
267             } else {
268                 if (mExtraScreen == null) {
269                     mExtraScreen = getPreferenceManager().createPreferenceScreen(context);
270                     mExtraScreen.addPreference(createHeaderLineTwoPreference(context));
271                 }
272                 mExtraScreen.addPreference(preference);
273             }
274         }
275 
276         final String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
277         final UserHandle user = getArguments().getParcelable(Intent.EXTRA_USER);
278 
279         if (mExtraScreen != null) {
280             extraPerms.setOnPreferenceClickListener(preference -> {
281                 AdditionalPermissionsFragment frag = new AdditionalPermissionsFragment();
282                 setPackage(frag, packageName, user);
283                 frag.setTargetFragment(AppPermissionsFragment.this, 0);
284                 getFragmentManager().beginTransaction()
285                         .replace(android.R.id.content, frag)
286                         .addToBackStack(null)
287                         .commit();
288                 return true;
289             });
290             int count = mExtraScreen.getPreferenceCount() - 1;
291             extraPerms.setSummary(StringUtils.getIcuPluralsString(getContext(),
292                     R.string.additional_permissions_more, count));
293             screen.addPreference(extraPerms);
294         }
295 
296         addAutoRevokePreferences(getPreferenceScreen());
297 
298         setLoading(false /* loading */, true /* animate */);
299     }
300 
301     /**
302      * Creates a heading below decor_title and above the rest of the preferences. This heading
303      * displays the app name and banner icon. It's used in both system and additional permissions
304      * fragments for each app. The styling used is the same as a leanback preference with a
305      * customized background color
306      * @param context The context the preferences created on
307      * @return The preference header to be inserted as the first preference in the list.
308      */
createHeaderLineTwoPreference(Context context)309     private Preference createHeaderLineTwoPreference(Context context) {
310         Preference headerLineTwo = new Preference(context) {
311             @Override
312             public void onBindViewHolder(PreferenceViewHolder holder) {
313                 super.onBindViewHolder(holder);
314                 holder.itemView.setBackgroundColor(
315                         getResources().getColor(R.color.lb_header_banner_color));
316             }
317         };
318         headerLineTwo.setKey(HEADER_PREFERENCE_KEY);
319         headerLineTwo.setSelectable(false);
320         headerLineTwo.setTitle(mLabel);
321         headerLineTwo.setIcon(mIcon);
322         return headerLineTwo;
323     }
324 
325     @Override
onPreferenceClick(final Preference preference)326     public boolean onPreferenceClick(final Preference preference) {
327         String groupName = preference.getKey();
328         final AppPermissionGroup group = mAppPermissions.getPermissionGroup(groupName);
329 
330         if (group == null) {
331             return false;
332         }
333 
334         addToggledGroup(group);
335 
336         if (LocationUtils.isLocationGroupAndProvider(getContext(), group.getName(),
337                 group.getApp().packageName)) {
338             LocationUtils.showLocationDialog(getContext(), mAppPermissions.getAppLabel());
339             return false;
340         }
341 
342         AppPermissionFragment frag = new AppPermissionFragment();
343 
344         frag.setArguments(AppPermissionFragment.createArgs(
345                     /* packageName= */ group.getApp().packageName,
346                     /* permName= */ null,
347                     /* groupName= */ group.getName(),
348                     /* userHandle= */ group.getUser(),
349                     /* caller= */ null,
350                     /* sessionId= */ INVALID_SESSION_ID,
351                     /* grantCategory= */ null));
352         frag.setTargetFragment(AppPermissionsFragment.this, 0);
353         getFragmentManager().beginTransaction()
354                 .replace(android.R.id.content, frag)
355                 .addToBackStack(null)
356                 .commit();
357 
358         return true;
359     }
360 
361     @Override
onPause()362     public void onPause() {
363         mViewModel.getAutoRevokeLiveData().removeObservers(this);
364         super.onPause();
365         logToggledGroups();
366         if (mSensorPrivacyManager != null) {
367             mSensorPrivacyManager.removeSensorPrivacyListener(mPrivacyChangedListener);
368         }
369     }
370 
addToggledGroup(AppPermissionGroup group)371     private void addToggledGroup(AppPermissionGroup group) {
372         if (mToggledGroups == null) {
373             mToggledGroups = new ArraySet<>();
374         }
375         mToggledGroups.add(group);
376     }
377 
logToggledGroups()378     private void logToggledGroups() {
379         if (mToggledGroups != null) {
380             LegacySafetyNetLogger.logPermissionsToggled(mToggledGroups);
381             mToggledGroups = null;
382         }
383     }
384 
setPreferencesCheckedState()385     private void setPreferencesCheckedState() {
386         setPreferencesCheckedState(getPreferenceScreen());
387         if (mExtraScreen != null) {
388             setPreferencesCheckedState(mExtraScreen);
389         }
390         setAutoRevokeToggleState(mViewModel.getAutoRevokeLiveData().getValue());
391     }
392 
setPreferencesCheckedState(PreferenceScreen screen)393     private void setPreferencesCheckedState(PreferenceScreen screen) {
394         int preferenceCount = screen.getPreferenceCount();
395         for (int i = 0; i < preferenceCount; i++) {
396             Preference preference = screen.getPreference(i);
397             if (preference.getKey() == null) {
398                 continue;
399             }
400             AppPermissionGroup group = mAppPermissions.getPermissionGroup(preference.getKey());
401             if (group == null) {
402                 continue;
403             }
404             AppPermissionGroup backgroundGroup = group.getBackgroundPermissions();
405 
406             if (group.areRuntimePermissionsGranted()) {
407                 if (backgroundGroup == null) {
408                     preference.setSummary(R.string.app_permission_button_allow);
409                 } else {
410                     if (backgroundGroup.areRuntimePermissionsGranted()) {
411                         preference.setSummary(R.string.permission_access_always);
412                     } else {
413                         preference.setSummary(R.string.permission_access_only_foreground);
414                     }
415                 }
416             } else {
417                 if (group.isOneTime()) {
418                     preference.setSummary(R.string.app_permission_button_ask);
419                 } else {
420                     preference.setSummary(R.string.permission_access_never);
421                 }
422             }
423         }
424     }
425 
426 
addAutoRevokePreferences(PreferenceScreen screen)427     private void addAutoRevokePreferences(PreferenceScreen screen) {
428         SwitchPreference autoRevokeSwitch =
429                 new SwitchPreference(screen.getPreferenceManager().getContext());
430         autoRevokeSwitch.setLayoutResource(R.layout.preference_permissions_revoke);
431         autoRevokeSwitch.setOnPreferenceClickListener((preference) -> {
432             mViewModel.setAutoRevoke(autoRevokeSwitch.isChecked());
433             android.util.Log.w(LOG_TAG, "setAutoRevoke " + autoRevokeSwitch.isChecked());
434             return true;
435         });
436         autoRevokeSwitch.setTitle(isHibernationEnabled() ? R.string.unused_apps_label
437                 : R.string.auto_revoke_label);
438         autoRevokeSwitch.setSummary(R.string.auto_revoke_summary);
439         autoRevokeSwitch.setKey(AUTO_REVOKE_SWITCH_KEY);
440         if (isHibernationEnabled()) {
441             PreferenceCategory unusedAppsCategory = new PreferenceCategory(
442                     screen.getPreferenceManager().getContext());
443             unusedAppsCategory.setKey(UNUSED_APPS_KEY);
444             unusedAppsCategory.setTitle(R.string.unused_apps);
445             screen.addPreference(unusedAppsCategory);
446             unusedAppsCategory.addPreference(autoRevokeSwitch);
447         } else {
448             screen.addPreference(autoRevokeSwitch);
449         }
450     }
451 
setAutoRevokeToggleState(HibernationSettingState state)452     private void setAutoRevokeToggleState(HibernationSettingState state) {
453         SwitchPreference autoRevokeSwitch = getPreferenceScreen().findPreference(
454                 AUTO_REVOKE_SWITCH_KEY);
455         if (state == null || autoRevokeSwitch == null) {
456             return;
457         }
458         if (state.getRevocableGroupNames().isEmpty()) {
459             if (isHibernationEnabled()) {
460                 getPreferenceScreen().findPreference(UNUSED_APPS_KEY).setVisible(false);
461             }
462             autoRevokeSwitch.setVisible(false);
463             return;
464         }
465         if (isHibernationEnabled()) {
466             getPreferenceScreen().findPreference(UNUSED_APPS_KEY).setVisible(true);
467         }
468         autoRevokeSwitch.setVisible(true);
469         autoRevokeSwitch.setChecked(state.isEligibleForHibernation());
470     }
471 
getPackageInfo(Activity activity, String packageName)472     private static PackageInfo getPackageInfo(Activity activity, String packageName) {
473         try {
474             return activity.getPackageManager().getPackageInfo(
475                     packageName, PackageManager.GET_PERMISSIONS);
476         } catch (PackageManager.NameNotFoundException e) {
477             Log.i(LOG_TAG, "No package:" + activity.getCallingPackage(), e);
478             return null;
479         }
480     }
481 
482     public static class AdditionalPermissionsFragment extends SettingsWithHeader {
483         AppPermissionsFragment mOuterFragment;
484 
485         @Override
onCreate(Bundle savedInstanceState)486         public void onCreate(Bundle savedInstanceState) {
487             mOuterFragment = (AppPermissionsFragment) getTargetFragment();
488             super.onCreate(savedInstanceState);
489             setHasOptionsMenu(true);
490         }
491 
492         @Override
onCreatePreferences(Bundle savedInstanceState, String rootKey)493         public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
494             setPreferenceScreen(mOuterFragment.mExtraScreen);
495         }
496 
497         @Override
onViewCreated(View view, Bundle savedInstanceState)498         public void onViewCreated(View view, Bundle savedInstanceState) {
499             super.onViewCreated(view, savedInstanceState);
500             bindUi(this,
501                 getArguments().getString(Intent.EXTRA_PACKAGE_NAME),
502                 getArguments().getParcelable(Intent.EXTRA_USER),
503                 R.string.additional_permissions_decor_title);
504         }
505 
506         @Override
onOptionsItemSelected(MenuItem item)507         public boolean onOptionsItemSelected(MenuItem item) {
508             switch (item.getItemId()) {
509             case android.R.id.home:
510                 getFragmentManager().popBackStack();
511                 return true;
512             }
513             return super.onOptionsItemSelected(item);
514         }
515     }
516 }
517