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
17package com.android.packageinstaller.permission.ui;
18
19import android.annotation.Nullable;
20import android.app.ActionBar;
21import android.app.Activity;
22import android.app.AlertDialog;
23import android.app.Fragment;
24import android.content.Context;
25import android.content.DialogInterface;
26import android.content.DialogInterface.OnClickListener;
27import android.content.Intent;
28import android.content.pm.ApplicationInfo;
29import android.content.pm.PackageInfo;
30import android.content.pm.PackageManager;
31import android.graphics.drawable.Drawable;
32import android.net.Uri;
33import android.os.Bundle;
34import android.provider.Settings;
35import android.support.v14.preference.SwitchPreference;
36import android.support.v7.preference.Preference;
37import android.support.v7.preference.Preference.OnPreferenceChangeListener;
38import android.support.v7.preference.Preference.OnPreferenceClickListener;
39import android.support.v7.preference.PreferenceScreen;
40import android.util.Log;
41import android.view.Menu;
42import android.view.MenuInflater;
43import android.view.MenuItem;
44import android.view.View;
45import android.view.ViewGroup;
46import android.widget.ImageView;
47import android.widget.TextView;
48import android.widget.Toast;
49
50import com.android.packageinstaller.R;
51import com.android.packageinstaller.permission.model.AppPermissionGroup;
52import com.android.packageinstaller.permission.model.AppPermissions;
53import com.android.packageinstaller.permission.utils.LocationUtils;
54import com.android.packageinstaller.permission.utils.SafetyNetLogger;
55import com.android.packageinstaller.permission.utils.Utils;
56
57import java.util.ArrayList;
58import java.util.List;
59
60public final class AppPermissionsFragment extends SettingsWithHeader
61        implements OnPreferenceChangeListener {
62
63    private static final String LOG_TAG = "ManagePermsFragment";
64
65    static final String EXTRA_HIDE_INFO_BUTTON = "hideInfoButton";
66
67    private static final int MENU_ALL_PERMS = 0;
68
69    private List<AppPermissionGroup> mToggledGroups;
70    private AppPermissions mAppPermissions;
71    private PreferenceScreen mExtraScreen;
72
73    private boolean mHasConfirmedRevoke;
74
75    public static AppPermissionsFragment newInstance(String packageName) {
76        return setPackageName(new AppPermissionsFragment(), packageName);
77    }
78
79    private static <T extends Fragment> T setPackageName(T fragment, String packageName) {
80        Bundle arguments = new Bundle();
81        arguments.putString(Intent.EXTRA_PACKAGE_NAME, packageName);
82        fragment.setArguments(arguments);
83        return fragment;
84    }
85
86    @Override
87    public void onCreate(Bundle savedInstanceState) {
88        super.onCreate(savedInstanceState);
89        setLoading(true /* loading */, false /* animate */);
90        setHasOptionsMenu(true);
91        final ActionBar ab = getActivity().getActionBar();
92        if (ab != null) {
93            ab.setDisplayHomeAsUpEnabled(true);
94        }
95
96        String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
97        Activity activity = getActivity();
98        PackageInfo packageInfo = getPackageInfo(activity, packageName);
99        if (packageInfo == null) {
100            Toast.makeText(activity, R.string.app_not_found_dlg_title, Toast.LENGTH_LONG).show();
101            activity.finish();
102            return;
103        }
104
105        mAppPermissions = new AppPermissions(activity, packageInfo, null, true, new Runnable() {
106            @Override
107            public void run() {
108                getActivity().finish();
109            }
110        });
111        loadPreferences();
112    }
113
114    @Override
115    public void onResume() {
116        super.onResume();
117        mAppPermissions.refresh();
118        setPreferencesCheckedState();
119    }
120
121    @Override
122    public boolean onOptionsItemSelected(MenuItem item) {
123        switch (item.getItemId()) {
124            case android.R.id.home: {
125                getActivity().finish();
126                return true;
127            }
128
129            case MENU_ALL_PERMS: {
130                Fragment frag = AllAppPermissionsFragment.newInstance(
131                        getArguments().getString(Intent.EXTRA_PACKAGE_NAME));
132                getFragmentManager().beginTransaction()
133                        .replace(android.R.id.content, frag)
134                        .addToBackStack("AllPerms")
135                        .commit();
136                return true;
137            }
138        }
139        return super.onOptionsItemSelected(item);
140    }
141
142    @Override
143    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
144        super.onViewCreated(view, savedInstanceState);
145        if (mAppPermissions != null) {
146            bindUi(this, mAppPermissions.getPackageInfo());
147        }
148    }
149
150    @Override
151    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
152        super.onCreateOptionsMenu(menu, inflater);
153        menu.add(Menu.NONE, MENU_ALL_PERMS, Menu.NONE, R.string.all_permissions);
154    }
155
156    private static void bindUi(SettingsWithHeader fragment, PackageInfo packageInfo) {
157        Activity activity = fragment.getActivity();
158        PackageManager pm = activity.getPackageManager();
159        ApplicationInfo appInfo = packageInfo.applicationInfo;
160        Intent infoIntent = null;
161        if (!activity.getIntent().getBooleanExtra(EXTRA_HIDE_INFO_BUTTON, false)) {
162            infoIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
163                    .setData(Uri.fromParts("package", packageInfo.packageName, null));
164        }
165
166        Drawable icon = appInfo.loadIcon(pm);
167        CharSequence label = appInfo.loadLabel(pm);
168        fragment.setHeader(icon, label, infoIntent);
169
170        ActionBar ab = activity.getActionBar();
171        if (ab != null) {
172            ab.setTitle(R.string.app_permissions);
173        }
174
175        ViewGroup rootView = (ViewGroup) fragment.getView();
176        ImageView iconView = (ImageView) rootView.findViewById(R.id.lb_icon);
177        if (iconView != null) {
178            iconView.setImageDrawable(icon);
179        }
180        TextView titleView = (TextView) rootView.findViewById(R.id.lb_title);
181        if (titleView != null) {
182            titleView.setText(R.string.app_permissions);
183        }
184        TextView breadcrumbView = (TextView) rootView.findViewById(R.id.lb_breadcrumb);
185        if (breadcrumbView != null) {
186            breadcrumbView.setText(label);
187        }
188    }
189
190    private void loadPreferences() {
191        Context context = getPreferenceManager().getContext();
192        if (context == null) {
193            return;
194        }
195
196        PreferenceScreen screen = getPreferenceScreen();
197        screen.removeAll();
198
199        if (mExtraScreen != null) {
200            mExtraScreen.removeAll();
201        }
202
203        final Preference extraPerms = new Preference(context);
204        extraPerms.setIcon(R.drawable.ic_toc);
205        extraPerms.setTitle(R.string.additional_permissions);
206
207        for (AppPermissionGroup group : mAppPermissions.getPermissionGroups()) {
208            if (!Utils.shouldShowPermission(group, mAppPermissions.getPackageInfo().packageName)) {
209                continue;
210            }
211
212            boolean isPlatform = group.getDeclaringPackage().equals(Utils.OS_PKG);
213
214            SwitchPreference preference = new SwitchPreference(context);
215            preference.setOnPreferenceChangeListener(this);
216            preference.setKey(group.getName());
217            Drawable icon = Utils.loadDrawable(context.getPackageManager(),
218                    group.getIconPkg(), group.getIconResId());
219            preference.setIcon(Utils.applyTint(getContext(), icon,
220                    android.R.attr.colorControlNormal));
221            preference.setTitle(group.getLabel());
222            if (group.isPolicyFixed()) {
223                preference.setSummary(getString(R.string.permission_summary_enforced_by_policy));
224            }
225            preference.setPersistent(false);
226            preference.setEnabled(!group.isPolicyFixed());
227            preference.setChecked(group.areRuntimePermissionsGranted());
228
229            if (isPlatform) {
230                screen.addPreference(preference);
231            } else {
232                if (mExtraScreen == null) {
233                    mExtraScreen = getPreferenceManager().createPreferenceScreen(context);
234                }
235                mExtraScreen.addPreference(preference);
236            }
237        }
238
239        if (mExtraScreen != null) {
240            extraPerms.setOnPreferenceClickListener(new OnPreferenceClickListener() {
241                @Override
242                public boolean onPreferenceClick(Preference preference) {
243                    AdditionalPermissionsFragment frag = new AdditionalPermissionsFragment();
244                    setPackageName(frag, getArguments().getString(Intent.EXTRA_PACKAGE_NAME));
245                    frag.setTargetFragment(AppPermissionsFragment.this, 0);
246                    getFragmentManager().beginTransaction()
247                            .replace(android.R.id.content, frag)
248                            .addToBackStack(null)
249                            .commit();
250                    return true;
251                }
252            });
253            int count = mExtraScreen.getPreferenceCount();
254            extraPerms.setSummary(getResources().getQuantityString(
255                    R.plurals.additional_permissions_more, count, count));
256            screen.addPreference(extraPerms);
257        }
258
259        setLoading(false /* loading */, true /* animate */);
260    }
261
262    @Override
263    public boolean onPreferenceChange(final Preference preference, Object newValue) {
264        String groupName = preference.getKey();
265        final AppPermissionGroup group = mAppPermissions.getPermissionGroup(groupName);
266
267        if (group == null) {
268            return false;
269        }
270
271        OverlayTouchActivity activity = (OverlayTouchActivity) getActivity();
272        if (activity.isObscuredTouch()) {
273            activity.showOverlayDialog();
274            return false;
275        }
276
277        addToggledGroup(group);
278
279        if (LocationUtils.isLocationGroupAndProvider(group.getName(), group.getApp().packageName)) {
280            LocationUtils.showLocationDialog(getContext(), mAppPermissions.getAppLabel());
281            return false;
282        }
283        if (newValue == Boolean.TRUE) {
284            group.grantRuntimePermissions(false);
285        } else {
286            final boolean grantedByDefault = group.hasGrantedByDefaultPermission();
287            if (grantedByDefault || (!group.hasRuntimePermission() && !mHasConfirmedRevoke)) {
288                new AlertDialog.Builder(getContext())
289                        .setMessage(grantedByDefault ? R.string.system_warning
290                                : R.string.old_sdk_deny_warning)
291                        .setNegativeButton(R.string.cancel, null)
292                        .setPositiveButton(R.string.grant_dialog_button_deny,
293                                new OnClickListener() {
294                            @Override
295                            public void onClick(DialogInterface dialog, int which) {
296                                ((SwitchPreference) preference).setChecked(false);
297                                group.revokeRuntimePermissions(false);
298                                if (!grantedByDefault) {
299                                    mHasConfirmedRevoke = true;
300                                }
301                            }
302                        })
303                        .show();
304                return false;
305            } else {
306                group.revokeRuntimePermissions(false);
307            }
308        }
309
310        return true;
311    }
312
313    @Override
314    public void onPause() {
315        super.onPause();
316        logToggledGroups();
317    }
318
319    private void addToggledGroup(AppPermissionGroup group) {
320        if (mToggledGroups == null) {
321            mToggledGroups = new ArrayList<>();
322        }
323        // Double toggle is back to initial state.
324        if (mToggledGroups.contains(group)) {
325            mToggledGroups.remove(group);
326        } else {
327            mToggledGroups.add(group);
328        }
329    }
330
331    private void logToggledGroups() {
332        if (mToggledGroups != null) {
333            String packageName = mAppPermissions.getPackageInfo().packageName;
334            SafetyNetLogger.logPermissionsToggled(packageName, mToggledGroups);
335            mToggledGroups = null;
336        }
337    }
338
339    private void setPreferencesCheckedState() {
340        setPreferencesCheckedState(getPreferenceScreen());
341        if (mExtraScreen != null) {
342            setPreferencesCheckedState(mExtraScreen);
343        }
344    }
345
346    private void setPreferencesCheckedState(PreferenceScreen screen) {
347        int preferenceCount = screen.getPreferenceCount();
348        for (int i = 0; i < preferenceCount; i++) {
349            Preference preference = screen.getPreference(i);
350            if (preference instanceof SwitchPreference) {
351                SwitchPreference switchPref = (SwitchPreference) preference;
352                AppPermissionGroup group = mAppPermissions.getPermissionGroup(switchPref.getKey());
353                if (group != null) {
354                    switchPref.setChecked(group.areRuntimePermissionsGranted());
355                }
356            }
357        }
358    }
359
360    private static PackageInfo getPackageInfo(Activity activity, String packageName) {
361        try {
362            return activity.getPackageManager().getPackageInfo(
363                    packageName, PackageManager.GET_PERMISSIONS);
364        } catch (PackageManager.NameNotFoundException e) {
365            Log.i(LOG_TAG, "No package:" + activity.getCallingPackage(), e);
366            return null;
367        }
368    }
369
370    public static class AdditionalPermissionsFragment extends SettingsWithHeader {
371        AppPermissionsFragment mOuterFragment;
372
373        @Override
374        public void onCreate(Bundle savedInstanceState) {
375            mOuterFragment = (AppPermissionsFragment) getTargetFragment();
376            super.onCreate(savedInstanceState);
377            setHeader(mOuterFragment.mIcon, mOuterFragment.mLabel, mOuterFragment.mInfoIntent);
378            setHasOptionsMenu(true);
379        }
380
381        @Override
382        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
383            setPreferenceScreen(mOuterFragment.mExtraScreen);
384        }
385
386        @Override
387        public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
388            super.onViewCreated(view, savedInstanceState);
389            String packageName = getArguments().getString(Intent.EXTRA_PACKAGE_NAME);
390            bindUi(this, getPackageInfo(getActivity(), packageName));
391        }
392
393        @Override
394        public boolean onOptionsItemSelected(MenuItem item) {
395            switch (item.getItemId()) {
396            case android.R.id.home:
397                getFragmentManager().popBackStack();
398                return true;
399            }
400            return super.onOptionsItemSelected(item);
401        }
402    }
403}
404