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1 /*
2  * Copyright (C) 2016 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.notification;
18 
19 import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
20 import static android.app.NotificationManager.IMPORTANCE_LOW;
21 import static android.app.NotificationManager.IMPORTANCE_NONE;
22 import static android.app.NotificationManager.IMPORTANCE_UNSPECIFIED;
23 
24 import com.android.internal.widget.LockPatternUtils;
25 import com.android.settings.R;
26 import com.android.settings.SettingsPreferenceFragment;
27 import com.android.settings.applications.AppInfoBase;
28 import com.android.settings.applications.LayoutPreference;
29 import com.android.settings.widget.FooterPreference;
30 import com.android.settings.widget.SwitchBar;
31 import com.android.settingslib.RestrictedLockUtils;
32 import com.android.settingslib.RestrictedSwitchPreference;
33 
34 import android.app.Notification;
35 import android.app.NotificationChannel;
36 import android.app.NotificationManager;
37 import android.app.admin.DevicePolicyManager;
38 import android.content.Context;
39 import android.content.Intent;
40 import android.content.pm.ActivityInfo;
41 import android.content.pm.ApplicationInfo;
42 import android.content.pm.PackageInfo;
43 import android.content.pm.PackageManager;
44 import android.content.pm.PackageManager.NameNotFoundException;
45 import android.content.pm.ResolveInfo;
46 import android.content.pm.UserInfo;
47 import android.os.Bundle;
48 import android.os.UserHandle;
49 import android.os.UserManager;
50 import android.provider.Settings;
51 import android.service.notification.NotificationListenerService;
52 import android.support.v7.preference.DropDownPreference;
53 import android.support.v7.preference.Preference;
54 import android.text.TextUtils;
55 import android.util.ArrayMap;
56 import android.util.Log;
57 import android.widget.Toast;
58 
59 import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
60 
61 import java.util.ArrayList;
62 import java.util.List;
63 
64 abstract public class NotificationSettingsBase extends SettingsPreferenceFragment {
65     private static final String TAG = "NotifiSettingsBase";
66     private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
67 
68     private static final Intent APP_NOTIFICATION_PREFS_CATEGORY_INTENT
69             = new Intent(Intent.ACTION_MAIN)
70             .addCategory(Notification.INTENT_CATEGORY_NOTIFICATION_PREFERENCES);
71 
72     protected static final int ORDER_FIRST = -500;
73     protected static final int ORDER_LAST = 1000;
74 
75     protected static final String KEY_APP_LINK = "app_link";
76     protected static final String KEY_HEADER = "header";
77     protected static final String KEY_BLOCK = "block";
78     protected static final String KEY_BADGE = "badge";
79     protected static final String KEY_BYPASS_DND = "bypass_dnd";
80     protected static final String KEY_VISIBILITY_OVERRIDE = "visibility_override";
81     protected static final String KEY_BLOCKED_DESC = "block_desc";
82     protected static final String KEY_ALLOW_SOUND = "allow_sound";
83 
84     protected PackageManager mPm;
85     protected UserManager mUm;
86     protected NotificationBackend mBackend = new NotificationBackend();
87     protected LockPatternUtils mLockPatternUtils;
88     protected NotificationManager mNm;
89     protected Context mContext;
90     protected boolean mCreated;
91     protected int mUid;
92     protected int mUserId;
93     protected String mPkg;
94     protected PackageInfo mPkgInfo;
95     protected RestrictedSwitchPreference mBadge;
96     protected RestrictedSwitchPreference mPriority;
97     protected RestrictedDropDownPreference mVisibilityOverride;
98     protected RestrictedSwitchPreference mImportanceToggle;
99     protected LayoutPreference mBlockBar;
100     protected SwitchBar mSwitchBar;
101     protected FooterPreference mBlockedDesc;
102     protected Preference mAppLink;
103 
104     protected EnforcedAdmin mSuspendedAppsAdmin;
105     protected boolean mDndVisualEffectsSuppressed;
106 
107     protected NotificationChannel mChannel;
108     protected NotificationBackend.AppRow mAppRow;
109     protected boolean mShowLegacyChannelConfig = false;
110 
111     @Override
onActivityCreated(Bundle savedInstanceState)112     public void onActivityCreated(Bundle savedInstanceState) {
113         super.onActivityCreated(savedInstanceState);
114         if (DEBUG) Log.d(TAG, "onActivityCreated mCreated=" + mCreated);
115         if (mCreated) {
116             Log.w(TAG, "onActivityCreated: ignoring duplicate call");
117             return;
118         }
119         mCreated = true;
120     }
121 
122     @Override
onCreate(Bundle savedInstanceState)123     public void onCreate(Bundle savedInstanceState) {
124         super.onCreate(savedInstanceState);
125         mContext = getActivity();
126         Intent intent = getActivity().getIntent();
127         Bundle args = getArguments();
128         if (DEBUG) Log.d(TAG, "onCreate getIntent()=" + intent);
129         if (intent == null && args == null) {
130             Log.w(TAG, "No intent");
131             toastAndFinish();
132             return;
133         }
134 
135         mPm = getPackageManager();
136         mUm = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
137         mNm = NotificationManager.from(mContext);
138 
139         mPkg = args != null && args.containsKey(AppInfoBase.ARG_PACKAGE_NAME)
140                 ? args.getString(AppInfoBase.ARG_PACKAGE_NAME)
141                 : intent.getStringExtra(Settings.EXTRA_APP_PACKAGE);
142         mUid = args != null && args.containsKey(AppInfoBase.ARG_PACKAGE_UID)
143                 ? args.getInt(AppInfoBase.ARG_PACKAGE_UID)
144                 : intent.getIntExtra(Settings.EXTRA_APP_UID, -1);
145 
146         if (mUid < 0) {
147             try {
148                 mUid = mPm.getPackageUid(mPkg, 0);
149             } catch (NameNotFoundException e) {
150             }
151         }
152 
153         mPkgInfo = findPackageInfo(mPkg, mUid);
154 
155         if (mUid < 0 || TextUtils.isEmpty(mPkg) || mPkgInfo == null) {
156             Log.w(TAG, "Missing package or uid or packageinfo");
157             toastAndFinish();
158             return;
159         }
160 
161         mUserId = UserHandle.getUserId(mUid);
162     }
163 
164     @Override
onResume()165     public void onResume() {
166         super.onResume();
167         if (mUid < 0 || TextUtils.isEmpty(mPkg) || mPkgInfo == null) {
168             Log.w(TAG, "Missing package or uid or packageinfo");
169             finish();
170             return;
171         }
172         mAppRow = mBackend.loadAppRow(mContext, mPm, mPkgInfo);
173         Bundle args = getArguments();
174         mChannel = (args != null && args.containsKey(Settings.EXTRA_CHANNEL_ID)) ?
175                 mBackend.getChannel(mPkg, mUid, args.getString(Settings.EXTRA_CHANNEL_ID)) : null;
176 
177         mSuspendedAppsAdmin = RestrictedLockUtils.checkIfApplicationIsSuspended(
178                 mContext, mPkg, mUserId);
179         NotificationManager.Policy policy = mNm.getNotificationPolicy();
180         mDndVisualEffectsSuppressed = policy == null ? false : policy.suppressedVisualEffects != 0;
181 
182         mSuspendedAppsAdmin = RestrictedLockUtils.checkIfApplicationIsSuspended(
183                 mContext, mPkg, mUserId);
184     }
185 
setVisible(Preference p, boolean visible)186     protected void setVisible(Preference p, boolean visible) {
187         final boolean isVisible = getPreferenceScreen().findPreference(p.getKey()) != null;
188         if (isVisible == visible) return;
189         if (visible) {
190             getPreferenceScreen().addPreference(p);
191         } else {
192             getPreferenceScreen().removePreference(p);
193         }
194     }
195 
toastAndFinish()196     protected void toastAndFinish() {
197         Toast.makeText(mContext, R.string.app_not_found_dlg_text, Toast.LENGTH_SHORT).show();
198         getActivity().finish();
199     }
200 
queryNotificationConfigActivities()201     private List<ResolveInfo> queryNotificationConfigActivities() {
202         if (DEBUG) Log.d(TAG, "APP_NOTIFICATION_PREFS_CATEGORY_INTENT is "
203                 + APP_NOTIFICATION_PREFS_CATEGORY_INTENT);
204         final List<ResolveInfo> resolveInfos = mPm.queryIntentActivities(
205                 APP_NOTIFICATION_PREFS_CATEGORY_INTENT,
206                 0 //PackageManager.MATCH_DEFAULT_ONLY
207         );
208         return resolveInfos;
209     }
210 
collectConfigActivities(ArrayMap<String, NotificationBackend.AppRow> rows)211     protected void collectConfigActivities(ArrayMap<String, NotificationBackend.AppRow> rows) {
212         final List<ResolveInfo> resolveInfos = queryNotificationConfigActivities();
213         applyConfigActivities(rows, resolveInfos);
214     }
215 
applyConfigActivities(ArrayMap<String, NotificationBackend.AppRow> rows, List<ResolveInfo> resolveInfos)216     private void applyConfigActivities(ArrayMap<String, NotificationBackend.AppRow> rows,
217             List<ResolveInfo> resolveInfos) {
218         if (DEBUG) Log.d(TAG, "Found " + resolveInfos.size() + " preference activities"
219                 + (resolveInfos.size() == 0 ? " ;_;" : ""));
220         for (ResolveInfo ri : resolveInfos) {
221             final ActivityInfo activityInfo = ri.activityInfo;
222             final ApplicationInfo appInfo = activityInfo.applicationInfo;
223             final NotificationBackend.AppRow row = rows.get(appInfo.packageName);
224             if (row == null) {
225                 if (DEBUG) Log.v(TAG, "Ignoring notification preference activity ("
226                         + activityInfo.name + ") for unknown package "
227                         + activityInfo.packageName);
228                 continue;
229             }
230             if (row.settingsIntent != null) {
231                 if (DEBUG) Log.v(TAG, "Ignoring duplicate notification preference activity ("
232                         + activityInfo.name + ") for package "
233                         + activityInfo.packageName);
234                 continue;
235             }
236             row.settingsIntent = new Intent(APP_NOTIFICATION_PREFS_CATEGORY_INTENT)
237                     .setClassName(activityInfo.packageName, activityInfo.name);
238             if (mChannel != null) {
239                 row.settingsIntent.putExtra(Notification.EXTRA_CHANNEL_ID, mChannel.getId());
240             }
241         }
242     }
243 
findPackageInfo(String pkg, int uid)244     private PackageInfo findPackageInfo(String pkg, int uid) {
245         if (pkg == null || uid < 0) {
246             return null;
247         }
248         final String[] packages = mPm.getPackagesForUid(uid);
249         if (packages != null && pkg != null) {
250             final int N = packages.length;
251             for (int i = 0; i < N; i++) {
252                 final String p = packages[i];
253                 if (pkg.equals(p)) {
254                     try {
255                         return mPm.getPackageInfo(pkg, PackageManager.GET_SIGNATURES);
256                     } catch (NameNotFoundException e) {
257                         Log.w(TAG, "Failed to load package " + pkg, e);
258                     }
259                 }
260             }
261         }
262         return null;
263     }
264 
addAppLinkPref()265     protected void addAppLinkPref() {
266         if (mAppRow.settingsIntent != null && mAppLink == null) {
267             mAppLink = new Preference(getPrefContext());
268             mAppLink.setKey(KEY_APP_LINK);
269             mAppLink.setOrder(500);
270             mAppLink.setIntent(mAppRow.settingsIntent);
271             mAppLink.setTitle(mContext.getString(R.string.app_settings_link));
272             getPreferenceScreen().addPreference(mAppLink);
273         }
274     }
275 
populateDefaultChannelPrefs()276     protected void populateDefaultChannelPrefs() {
277         if (mPkgInfo != null && mChannel != null) {
278             addPreferencesFromResource(R.xml.legacy_channel_notification_settings);
279             setupPriorityPref(mChannel.canBypassDnd());
280             setupVisOverridePref(mChannel.getLockscreenVisibility());
281             setupImportanceToggle();
282             setupBadge();
283         }
284         mSwitchBar.setChecked(!mAppRow.banned
285                 && mChannel.getImportance() != NotificationManager.IMPORTANCE_NONE);
286     }
287 
setupBadge()288     abstract void setupBadge();
289 
updateDependents(boolean banned)290     abstract void updateDependents(boolean banned);
291 
292     // 'allow sound'
setupImportanceToggle()293     private void setupImportanceToggle() {
294         mImportanceToggle = (RestrictedSwitchPreference) findPreference(KEY_ALLOW_SOUND);
295         mImportanceToggle.setDisabledByAdmin(mSuspendedAppsAdmin);
296         mImportanceToggle.setEnabled(isChannelConfigurable(mChannel)
297                 && !mImportanceToggle.isDisabledByAdmin());
298         mImportanceToggle.setChecked(mChannel.getImportance() >= IMPORTANCE_DEFAULT
299                 || mChannel.getImportance() == IMPORTANCE_UNSPECIFIED);
300         mImportanceToggle.setOnPreferenceChangeListener(
301                 new Preference.OnPreferenceChangeListener() {
302                     @Override
303                     public boolean onPreferenceChange(Preference preference, Object newValue) {
304                         final int importance =
305                                 ((Boolean) newValue ? IMPORTANCE_UNSPECIFIED : IMPORTANCE_LOW);
306                         mChannel.setImportance(importance);
307                         mChannel.lockFields(NotificationChannel.USER_LOCKED_IMPORTANCE);
308                         mBackend.updateChannel(mPkg, mUid, mChannel);
309                         updateDependents(mChannel.getImportance() == IMPORTANCE_NONE);
310                         return true;
311                     }
312                 });
313     }
314 
setupPriorityPref(boolean priority)315     protected void setupPriorityPref(boolean priority) {
316         mPriority = (RestrictedSwitchPreference) findPreference(KEY_BYPASS_DND);
317         mPriority.setDisabledByAdmin(mSuspendedAppsAdmin);
318         mPriority.setEnabled(isChannelConfigurable(mChannel) && !mPriority.isDisabledByAdmin());
319         mPriority.setChecked(priority);
320         mPriority.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
321             @Override
322             public boolean onPreferenceChange(Preference preference, Object newValue) {
323                 final boolean bypassZenMode = (Boolean) newValue;
324                 mChannel.setBypassDnd(bypassZenMode);
325                 mChannel.lockFields(NotificationChannel.USER_LOCKED_PRIORITY);
326                 mBackend.updateChannel(mPkg, mUid, mChannel);
327                 return true;
328             }
329         });
330     }
331 
setupVisOverridePref(int sensitive)332     protected void setupVisOverridePref(int sensitive) {
333         mVisibilityOverride =
334                 (RestrictedDropDownPreference) findPreference(KEY_VISIBILITY_OVERRIDE);
335         ArrayList<CharSequence> entries = new ArrayList<>();
336         ArrayList<CharSequence> values = new ArrayList<>();
337 
338         mVisibilityOverride.clearRestrictedItems();
339         if (getLockscreenNotificationsEnabled() && getLockscreenAllowPrivateNotifications()) {
340             final String summaryShowEntry =
341                     getString(R.string.lock_screen_notifications_summary_show);
342             final String summaryShowEntryValue =
343                     Integer.toString(NotificationManager.VISIBILITY_NO_OVERRIDE);
344             entries.add(summaryShowEntry);
345             values.add(summaryShowEntryValue);
346             setRestrictedIfNotificationFeaturesDisabled(summaryShowEntry, summaryShowEntryValue,
347                     DevicePolicyManager.KEYGUARD_DISABLE_SECURE_NOTIFICATIONS
348                             | DevicePolicyManager.KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS);
349         }
350 
351         final String summaryHideEntry = getString(R.string.lock_screen_notifications_summary_hide);
352         final String summaryHideEntryValue = Integer.toString(Notification.VISIBILITY_PRIVATE);
353         entries.add(summaryHideEntry);
354         values.add(summaryHideEntryValue);
355         setRestrictedIfNotificationFeaturesDisabled(summaryHideEntry, summaryHideEntryValue,
356                 DevicePolicyManager.KEYGUARD_DISABLE_SECURE_NOTIFICATIONS);
357         entries.add(getString(R.string.lock_screen_notifications_summary_disable));
358         values.add(Integer.toString(Notification.VISIBILITY_SECRET));
359         mVisibilityOverride.setEntries(entries.toArray(new CharSequence[entries.size()]));
360         mVisibilityOverride.setEntryValues(values.toArray(new CharSequence[values.size()]));
361 
362         if (sensitive == NotificationListenerService.Ranking.VISIBILITY_NO_OVERRIDE) {
363             mVisibilityOverride.setValue(Integer.toString(getGlobalVisibility()));
364         } else {
365             mVisibilityOverride.setValue(Integer.toString(sensitive));
366         }
367         mVisibilityOverride.setSummary("%s");
368 
369         mVisibilityOverride.setOnPreferenceChangeListener(
370                 new Preference.OnPreferenceChangeListener() {
371                     @Override
372                     public boolean onPreferenceChange(Preference preference, Object newValue) {
373                         int sensitive = Integer.parseInt((String) newValue);
374                         if (sensitive == getGlobalVisibility()) {
375                             sensitive = NotificationListenerService.Ranking.VISIBILITY_NO_OVERRIDE;
376                         }
377                         mChannel.setLockscreenVisibility(sensitive);
378                         mChannel.lockFields(NotificationChannel.USER_LOCKED_VISIBILITY);
379                         mBackend.updateChannel(mPkg, mUid, mChannel);
380                         return true;
381                     }
382                 });
383         mVisibilityOverride.setDisabledByAdmin(mSuspendedAppsAdmin);
384     }
385 
setupBlockDesc(int summaryResId)386     protected void setupBlockDesc(int summaryResId) {
387         mBlockedDesc = (FooterPreference) getPreferenceScreen().findPreference(
388                 KEY_BLOCKED_DESC);
389         mBlockedDesc = new FooterPreference(getPrefContext());
390         mBlockedDesc.setSelectable(false);
391         mBlockedDesc.setTitle(summaryResId);
392         mBlockedDesc.setEnabled(false);
393         mBlockedDesc.setOrder(50);
394         getPreferenceScreen().addPreference(mBlockedDesc);
395     }
396 
checkCanBeVisible(int minImportanceVisible)397     protected boolean checkCanBeVisible(int minImportanceVisible) {
398         int importance = mChannel.getImportance();
399         if (importance == NotificationManager.IMPORTANCE_UNSPECIFIED) {
400             return true;
401         }
402         return importance >= minImportanceVisible;
403     }
404 
setRestrictedIfNotificationFeaturesDisabled(CharSequence entry, CharSequence entryValue, int keyguardNotificationFeatures)405     private void setRestrictedIfNotificationFeaturesDisabled(CharSequence entry,
406             CharSequence entryValue, int keyguardNotificationFeatures) {
407         RestrictedLockUtils.EnforcedAdmin admin =
408                 RestrictedLockUtils.checkIfKeyguardFeaturesDisabled(
409                         mContext, keyguardNotificationFeatures, mUserId);
410         if (admin != null) {
411             RestrictedDropDownPreference.RestrictedItem item =
412                     new RestrictedDropDownPreference.RestrictedItem(entry, entryValue, admin);
413             mVisibilityOverride.addRestrictedItem(item);
414         }
415     }
416 
getGlobalVisibility()417     private int getGlobalVisibility() {
418         int globalVis = NotificationListenerService.Ranking.VISIBILITY_NO_OVERRIDE;
419         if (!getLockscreenNotificationsEnabled()) {
420             globalVis = Notification.VISIBILITY_SECRET;
421         } else if (!getLockscreenAllowPrivateNotifications()) {
422             globalVis = Notification.VISIBILITY_PRIVATE;
423         }
424         return globalVis;
425     }
426 
getLockscreenNotificationsEnabled()427     private boolean getLockscreenNotificationsEnabled() {
428         return Settings.Secure.getInt(getContentResolver(),
429                 Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 0) != 0;
430     }
431 
getLockscreenAllowPrivateNotifications()432     private boolean getLockscreenAllowPrivateNotifications() {
433         return Settings.Secure.getInt(getContentResolver(),
434                 Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, 0) != 0;
435     }
436 
isLockScreenSecure()437     protected boolean isLockScreenSecure() {
438         if (mLockPatternUtils == null) {
439             mLockPatternUtils = new LockPatternUtils(getActivity());
440         }
441         boolean lockscreenSecure = mLockPatternUtils.isSecure(UserHandle.myUserId());
442         UserInfo parentUser = mUm.getProfileParent(UserHandle.myUserId());
443         if (parentUser != null){
444             lockscreenSecure |= mLockPatternUtils.isSecure(parentUser.id);
445         }
446 
447         return lockscreenSecure;
448     }
449 
isChannelConfigurable(NotificationChannel channel)450     protected boolean isChannelConfigurable(NotificationChannel channel) {
451         return !channel.getId().equals(mAppRow.lockedChannelId);
452     }
453 
isChannelBlockable(boolean systemApp, NotificationChannel channel)454     protected boolean isChannelBlockable(boolean systemApp, NotificationChannel channel) {
455         if (!mAppRow.systemApp) {
456             return true;
457         }
458 
459         return channel.isBlockableSystem()
460                 || channel.getImportance() == NotificationManager.IMPORTANCE_NONE;
461     }
462 }
463