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.server.notification; 18 19 import android.app.ActivityManager; 20 import android.app.AlarmManager; 21 import android.app.PendingIntent; 22 import android.content.BroadcastReceiver; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.content.IntentFilter; 26 import android.net.Uri; 27 import android.os.Binder; 28 import android.os.UserHandle; 29 import android.provider.Settings; 30 import android.service.notification.Condition; 31 import android.service.notification.ScheduleCalendar; 32 import android.service.notification.ZenModeConfig; 33 import android.text.TextUtils; 34 import android.util.ArrayMap; 35 import android.util.ArraySet; 36 import android.util.Log; 37 import android.util.Slog; 38 39 import com.android.internal.annotations.GuardedBy; 40 import com.android.internal.annotations.VisibleForTesting; 41 import com.android.server.notification.NotificationManagerService.DumpFilter; 42 import com.android.server.pm.PackageManagerService; 43 44 import java.io.PrintWriter; 45 import java.time.Clock; 46 import java.util.ArrayList; 47 import java.util.Calendar; 48 import java.util.List; 49 50 /** 51 * Built-in zen condition provider for daily scheduled time-based conditions. 52 */ 53 public class ScheduleConditionProvider extends SystemConditionProviderService { 54 static final String TAG = "ConditionProviders.SCP"; 55 static final boolean DEBUG = true || Log.isLoggable("ConditionProviders", Log.DEBUG); 56 57 private static final String NOT_SHOWN = "..."; 58 private static final String SIMPLE_NAME = ScheduleConditionProvider.class.getSimpleName(); 59 private static final String ACTION_EVALUATE = SIMPLE_NAME + ".EVALUATE"; 60 private static final int REQUEST_CODE_EVALUATE = 1; 61 private static final String EXTRA_TIME = "time"; 62 private static final String SEPARATOR = ";"; 63 private static final String SCP_SETTING = "snoozed_schedule_condition_provider"; 64 65 private final Context mContext = this; 66 private final Clock mClock; 67 private final ArrayMap<Uri, ScheduleCalendar> mSubscriptions = new ArrayMap<>(); 68 @GuardedBy("mSnoozedForAlarm") 69 private final ArraySet<Uri> mSnoozedForAlarm = new ArraySet<>(); 70 71 private AlarmManager mAlarmManager; 72 private boolean mConnected; 73 private boolean mRegistered; 74 private long mNextAlarmTime; 75 ScheduleConditionProvider()76 public ScheduleConditionProvider() { 77 this(Clock.systemUTC()); 78 } 79 80 @VisibleForTesting ScheduleConditionProvider(Clock clock)81 ScheduleConditionProvider(Clock clock) { 82 if (DEBUG) Slog.d(TAG, "new " + SIMPLE_NAME + "()"); 83 mClock = clock; 84 } 85 86 @Override isValidConditionId(Uri id)87 public boolean isValidConditionId(Uri id) { 88 return ZenModeConfig.isValidScheduleConditionId(id); 89 } 90 91 @Override dump(PrintWriter pw, DumpFilter filter)92 public void dump(PrintWriter pw, DumpFilter filter) { 93 pw.print(" "); pw.print(SIMPLE_NAME); pw.println(":"); 94 pw.print(" mConnected="); pw.println(mConnected); 95 pw.print(" mRegistered="); pw.println(mRegistered); 96 pw.println(" mSubscriptions="); 97 final long now = mClock.millis(); 98 synchronized (mSubscriptions) { 99 for (Uri conditionId : mSubscriptions.keySet()) { 100 pw.print(" "); 101 pw.print(meetsSchedule(mSubscriptions.get(conditionId), now) ? "* " : " "); 102 pw.println(conditionId); 103 pw.print(" "); 104 pw.println(mSubscriptions.get(conditionId).toString()); 105 } 106 } 107 synchronized (mSnoozedForAlarm) { 108 pw.println( 109 " snoozed due to alarm: " + TextUtils.join(SEPARATOR, mSnoozedForAlarm)); 110 } 111 dumpUpcomingTime(pw, "mNextAlarmTime", mNextAlarmTime, now); 112 } 113 114 @Override onConnected()115 public void onConnected() { 116 if (DEBUG) Slog.d(TAG, "onConnected"); 117 mConnected = true; 118 readSnoozed(); 119 } 120 121 @Override onBootComplete()122 public void onBootComplete() { 123 // noop 124 } 125 126 @Override onUserSwitched(UserHandle user)127 public void onUserSwitched(UserHandle user) { 128 // Nothing to do here because evaluateSubscriptions() is called for the new configuration 129 // when users switch, and that will reevaluate the next alarm, which is the only piece that 130 // is user-dependent. 131 } 132 133 @Override onDestroy()134 public void onDestroy() { 135 super.onDestroy(); 136 if (DEBUG) Slog.d(TAG, "onDestroy"); 137 mConnected = false; 138 } 139 140 @Override onSubscribe(Uri conditionId)141 public void onSubscribe(Uri conditionId) { 142 if (DEBUG) Slog.d(TAG, "onSubscribe " + conditionId); 143 if (!ZenModeConfig.isValidScheduleConditionId(conditionId)) { 144 notifyCondition(createCondition(conditionId, Condition.STATE_ERROR, "invalidId")); 145 return; 146 } 147 synchronized (mSubscriptions) { 148 mSubscriptions.put(conditionId, ZenModeConfig.toScheduleCalendar(conditionId)); 149 } 150 evaluateSubscriptions(); 151 } 152 153 @Override onUnsubscribe(Uri conditionId)154 public void onUnsubscribe(Uri conditionId) { 155 if (DEBUG) Slog.d(TAG, "onUnsubscribe " + conditionId); 156 synchronized (mSubscriptions) { 157 mSubscriptions.remove(conditionId); 158 } 159 removeSnoozed(conditionId); 160 evaluateSubscriptions(); 161 } 162 evaluateSubscriptions()163 private void evaluateSubscriptions() { 164 final long now = mClock.millis(); 165 mNextAlarmTime = 0; 166 long nextUserAlarmTime = getNextAlarmClockAlarm(); 167 List<Condition> conditionsToNotify = new ArrayList<>(); 168 synchronized (mSubscriptions) { 169 setRegistered(!mSubscriptions.isEmpty()); 170 for (Uri conditionId : mSubscriptions.keySet()) { 171 Condition condition = 172 evaluateSubscriptionLocked(conditionId, mSubscriptions.get(conditionId), 173 now, nextUserAlarmTime); 174 if (condition != null) { 175 conditionsToNotify.add(condition); 176 } 177 } 178 } 179 notifyConditions(conditionsToNotify.toArray(new Condition[conditionsToNotify.size()])); 180 updateAlarm(now, mNextAlarmTime); 181 } 182 183 @VisibleForTesting 184 @GuardedBy("mSubscriptions") evaluateSubscriptionLocked(Uri conditionId, ScheduleCalendar cal, long now, long nextUserAlarmTime)185 Condition evaluateSubscriptionLocked(Uri conditionId, ScheduleCalendar cal, 186 long now, long nextUserAlarmTime) { 187 if (DEBUG) Slog.d(TAG, String.format("evaluateSubscriptionLocked cal=%s, now=%s, " 188 + "nextUserAlarmTime=%s", cal, ts(now), ts(nextUserAlarmTime))); 189 Condition condition; 190 if (cal == null) { 191 condition = createCondition(conditionId, Condition.STATE_ERROR, "!invalidId"); 192 removeSnoozed(conditionId); 193 return condition; 194 } 195 if (cal.isInSchedule(now)) { 196 if (conditionSnoozed(conditionId)) { 197 condition = createCondition(conditionId, Condition.STATE_FALSE, "snoozed"); 198 } else if (cal.shouldExitForAlarm(now)) { 199 condition = createCondition(conditionId, Condition.STATE_FALSE, "alarmCanceled"); 200 addSnoozed(conditionId); 201 } else { 202 condition = createCondition(conditionId, Condition.STATE_TRUE, "meetsSchedule"); 203 } 204 } else { 205 condition = createCondition(conditionId, Condition.STATE_FALSE, "!meetsSchedule"); 206 removeSnoozed(conditionId); 207 } 208 cal.maybeSetNextAlarm(now, nextUserAlarmTime); 209 final long nextChangeTime = cal.getNextChangeTime(now); 210 if (nextChangeTime > 0 && nextChangeTime > now) { 211 if (mNextAlarmTime == 0 || nextChangeTime < mNextAlarmTime) { 212 mNextAlarmTime = nextChangeTime; 213 } 214 } 215 return condition; 216 } 217 updateAlarm(long now, long time)218 private void updateAlarm(long now, long time) { 219 final AlarmManager alarms = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 220 final PendingIntent pendingIntent = getPendingIntent(time); 221 alarms.cancel(pendingIntent); 222 if (time > now) { 223 if (DEBUG) Slog.d(TAG, String.format("Scheduling evaluate for %s, in %s, now=%s", 224 ts(time), formatDuration(time - now), ts(now))); 225 alarms.setExact(AlarmManager.RTC_WAKEUP, time, pendingIntent); 226 } else { 227 if (DEBUG) Slog.d(TAG, "Not scheduling evaluate"); 228 } 229 } 230 231 @VisibleForTesting getPendingIntent(long time)232 PendingIntent getPendingIntent(long time) { 233 return PendingIntent.getBroadcast(mContext, 234 REQUEST_CODE_EVALUATE, 235 new Intent(ACTION_EVALUATE) 236 .setPackage(PackageManagerService.PLATFORM_PACKAGE_NAME) 237 .addFlags(Intent.FLAG_RECEIVER_FOREGROUND) 238 .putExtra(EXTRA_TIME, time), 239 PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE); 240 } 241 getNextAlarmClockAlarm()242 private long getNextAlarmClockAlarm() { 243 if (mAlarmManager == null) { 244 mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); 245 } 246 final AlarmManager.AlarmClockInfo info = mAlarmManager.getNextAlarmClock( 247 ActivityManager.getCurrentUser()); 248 return info != null ? info.getTriggerTime() : 0; 249 } 250 meetsSchedule(ScheduleCalendar cal, long time)251 private boolean meetsSchedule(ScheduleCalendar cal, long time) { 252 return cal != null && cal.isInSchedule(time); 253 } 254 setRegistered(boolean registered)255 private void setRegistered(boolean registered) { 256 if (mRegistered == registered) return; 257 if (DEBUG) Slog.d(TAG, "setRegistered " + registered); 258 mRegistered = registered; 259 if (mRegistered) { 260 final IntentFilter filter = new IntentFilter(); 261 filter.addAction(Intent.ACTION_TIME_CHANGED); 262 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); 263 filter.addAction(ACTION_EVALUATE); 264 filter.addAction(AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED); 265 if (android.app.Flags.modesHsum()) { 266 registerReceiverForAllUsers(mReceiver, filter, /* broadcastPermission= */ null, 267 /* scheduler= */ null); 268 } else { 269 registerReceiver(mReceiver, filter, 270 Context.RECEIVER_EXPORTED_UNAUDITED); 271 } 272 } else { 273 unregisterReceiver(mReceiver); 274 } 275 } 276 createCondition(Uri id, int state, String reason)277 private Condition createCondition(Uri id, int state, String reason) { 278 if (DEBUG) Slog.d(TAG, "notifyCondition " + id 279 + " " + Condition.stateToString(state) 280 + " reason=" + reason); 281 final String summary = NOT_SHOWN; 282 final String line1 = NOT_SHOWN; 283 final String line2 = NOT_SHOWN; 284 return new Condition(id, summary, line1, line2, 0, state, Condition.FLAG_RELEVANT_ALWAYS); 285 } 286 conditionSnoozed(Uri conditionId)287 private boolean conditionSnoozed(Uri conditionId) { 288 synchronized (mSnoozedForAlarm) { 289 return mSnoozedForAlarm.contains(conditionId); 290 } 291 } 292 293 @VisibleForTesting addSnoozed(Uri conditionId)294 void addSnoozed(Uri conditionId) { 295 synchronized (mSnoozedForAlarm) { 296 mSnoozedForAlarm.add(conditionId); 297 saveSnoozedLocked(); 298 } 299 } 300 removeSnoozed(Uri conditionId)301 private void removeSnoozed(Uri conditionId) { 302 synchronized (mSnoozedForAlarm) { 303 mSnoozedForAlarm.remove(conditionId); 304 saveSnoozedLocked(); 305 } 306 } 307 308 @GuardedBy("mSnoozedForAlarm") saveSnoozedLocked()309 private void saveSnoozedLocked() { 310 final String setting = TextUtils.join(SEPARATOR, mSnoozedForAlarm); 311 final int currentUser = ActivityManager.getCurrentUser(); 312 Settings.Secure.putStringForUser(mContext.getContentResolver(), 313 SCP_SETTING, 314 setting, 315 currentUser); 316 } 317 readSnoozed()318 private void readSnoozed() { 319 synchronized (mSnoozedForAlarm) { 320 final long identity = Binder.clearCallingIdentity(); 321 try { 322 final String setting = Settings.Secure.getStringForUser( 323 mContext.getContentResolver(), 324 SCP_SETTING, 325 ActivityManager.getCurrentUser()); 326 if (setting != null) { 327 final String[] tokens = setting.split(SEPARATOR); 328 for (int i = 0; i < tokens.length; i++) { 329 String token = tokens[i]; 330 if (token != null) { 331 token = token.trim(); 332 } 333 if (TextUtils.isEmpty(token)) { 334 continue; 335 } 336 mSnoozedForAlarm.add(Uri.parse(token)); 337 } 338 } 339 } finally { 340 Binder.restoreCallingIdentity(identity); 341 } 342 } 343 } 344 345 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 346 @Override 347 public void onReceive(Context context, Intent intent) { 348 if (DEBUG) Slog.d(TAG, "onReceive " + intent.getAction()); 349 if (android.app.Flags.modesHsum()) { 350 if (AlarmManager.ACTION_NEXT_ALARM_CLOCK_CHANGED.equals(intent.getAction()) 351 && getSendingUserId() != ActivityManager.getCurrentUser()) { 352 // A different user changed their next alarm. 353 return; 354 } 355 } 356 357 if (Intent.ACTION_TIMEZONE_CHANGED.equals(intent.getAction())) { 358 synchronized (mSubscriptions) { 359 for (Uri conditionId : mSubscriptions.keySet()) { 360 final ScheduleCalendar cal = mSubscriptions.get(conditionId); 361 if (cal != null) { 362 cal.setTimeZone(Calendar.getInstance().getTimeZone()); 363 } 364 } 365 } 366 } 367 evaluateSubscriptions(); 368 } 369 }; 370 371 @VisibleForTesting // otherwise = NONE getSubscriptions()372 public ArrayMap<Uri, ScheduleCalendar> getSubscriptions() { 373 return mSubscriptions; 374 } 375 } 376