Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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.am; |
| 18 | |
| 19 | import static android.content.pm.PackageManager.MATCH_DEBUG_TRIAGED_MISSING; |
Suprabh Shukla | cefb4b5 | 2019-06-10 16:25:35 -0700 | [diff] [blame] | 20 | |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 21 | import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_MU; |
| 22 | import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_MU; |
| 23 | import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM; |
| 24 | import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME; |
| 25 | |
Philip P. Moltmann | 9c5226f | 2020-01-10 08:53:43 -0800 | [diff] [blame^] | 26 | import android.annotation.Nullable; |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 27 | import android.app.Activity; |
| 28 | import android.app.ActivityManagerInternal; |
| 29 | import android.app.AppGlobals; |
| 30 | import android.app.PendingIntent; |
| 31 | import android.content.IIntentSender; |
| 32 | import android.content.Intent; |
| 33 | import android.os.Binder; |
| 34 | import android.os.Bundle; |
| 35 | import android.os.Handler; |
| 36 | import android.os.IBinder; |
| 37 | import android.os.Looper; |
| 38 | import android.os.Message; |
| 39 | import android.os.RemoteCallbackList; |
| 40 | import android.os.RemoteException; |
| 41 | import android.os.UserHandle; |
| 42 | import android.util.ArrayMap; |
| 43 | import android.util.Slog; |
Suprabh Shukla | cefb4b5 | 2019-06-10 16:25:35 -0700 | [diff] [blame] | 44 | |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 45 | import com.android.internal.os.IResultReceiver; |
| 46 | import com.android.internal.util.function.pooled.PooledLambda; |
Suprabh Shukla | 0d51a8b | 2019-10-30 18:56:44 -0700 | [diff] [blame] | 47 | import com.android.server.AlarmManagerInternal; |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 48 | import com.android.server.LocalServices; |
| 49 | import com.android.server.wm.ActivityTaskManagerInternal; |
Wale Ogunwale | 5950709 | 2018-10-29 09:00:30 -0700 | [diff] [blame] | 50 | import com.android.server.wm.SafeActivityOptions; |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 51 | |
| 52 | import java.io.PrintWriter; |
| 53 | import java.lang.ref.WeakReference; |
| 54 | import java.util.ArrayList; |
| 55 | import java.util.HashMap; |
| 56 | import java.util.Iterator; |
| 57 | |
| 58 | /** |
| 59 | * Helper class for {@link ActivityManagerService} responsible for managing pending intents. |
| 60 | * |
| 61 | * <p>This class uses {@link #mLock} to synchronize access to internal state and doesn't make use of |
| 62 | * {@link ActivityManagerService} lock since there can be direct calls into this class from outside |
| 63 | * AM. This helps avoid deadlocks. |
| 64 | */ |
| 65 | public class PendingIntentController { |
| 66 | private static final String TAG = TAG_WITH_CLASS_NAME ? "PendingIntentController" : TAG_AM; |
| 67 | private static final String TAG_MU = TAG + POSTFIX_MU; |
| 68 | |
| 69 | /** Lock for internal state. */ |
| 70 | final Object mLock = new Object(); |
| 71 | final Handler mH; |
| 72 | ActivityManagerInternal mAmInternal; |
| 73 | final UserController mUserController; |
| 74 | final ActivityTaskManagerInternal mAtmInternal; |
| 75 | |
| 76 | /** Set of IntentSenderRecord objects that are currently active. */ |
| 77 | final HashMap<PendingIntentRecord.Key, WeakReference<PendingIntentRecord>> mIntentSenderRecords |
| 78 | = new HashMap<>(); |
| 79 | |
| 80 | PendingIntentController(Looper looper, UserController userController) { |
| 81 | mH = new Handler(looper); |
| 82 | mAtmInternal = LocalServices.getService(ActivityTaskManagerInternal.class); |
| 83 | mUserController = userController; |
| 84 | } |
| 85 | |
| 86 | void onActivityManagerInternalAdded() { |
| 87 | synchronized (mLock) { |
| 88 | mAmInternal = LocalServices.getService(ActivityManagerInternal.class); |
| 89 | } |
| 90 | } |
| 91 | |
Philip P. Moltmann | 9c5226f | 2020-01-10 08:53:43 -0800 | [diff] [blame^] | 92 | public PendingIntentRecord getIntentSender(int type, String packageName, |
| 93 | @Nullable String featureId, int callingUid, int userId, IBinder token, String resultWho, |
| 94 | int requestCode, Intent[] intents, String[] resolvedTypes, int flags, Bundle bOptions) { |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 95 | synchronized (mLock) { |
| 96 | if (DEBUG_MU) Slog.v(TAG_MU, "getIntentSender(): uid=" + callingUid); |
| 97 | |
| 98 | // We're going to be splicing together extras before sending, so we're |
| 99 | // okay poking into any contained extras. |
| 100 | if (intents != null) { |
| 101 | for (int i = 0; i < intents.length; i++) { |
| 102 | intents[i].setDefusable(true); |
| 103 | } |
| 104 | } |
| 105 | Bundle.setDefusable(bOptions, true); |
| 106 | |
| 107 | final boolean noCreate = (flags & PendingIntent.FLAG_NO_CREATE) != 0; |
| 108 | final boolean cancelCurrent = (flags & PendingIntent.FLAG_CANCEL_CURRENT) != 0; |
| 109 | final boolean updateCurrent = (flags & PendingIntent.FLAG_UPDATE_CURRENT) != 0; |
| 110 | flags &= ~(PendingIntent.FLAG_NO_CREATE | PendingIntent.FLAG_CANCEL_CURRENT |
| 111 | | PendingIntent.FLAG_UPDATE_CURRENT); |
| 112 | |
Philip P. Moltmann | 9c5226f | 2020-01-10 08:53:43 -0800 | [diff] [blame^] | 113 | PendingIntentRecord.Key key = new PendingIntentRecord.Key(type, packageName, featureId, |
| 114 | token, resultWho, requestCode, intents, resolvedTypes, flags, |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 115 | SafeActivityOptions.fromBundle(bOptions), userId); |
| 116 | WeakReference<PendingIntentRecord> ref; |
| 117 | ref = mIntentSenderRecords.get(key); |
| 118 | PendingIntentRecord rec = ref != null ? ref.get() : null; |
| 119 | if (rec != null) { |
| 120 | if (!cancelCurrent) { |
| 121 | if (updateCurrent) { |
| 122 | if (rec.key.requestIntent != null) { |
| 123 | rec.key.requestIntent.replaceExtras(intents != null ? |
| 124 | intents[intents.length - 1] : null); |
| 125 | } |
| 126 | if (intents != null) { |
| 127 | intents[intents.length - 1] = rec.key.requestIntent; |
| 128 | rec.key.allIntents = intents; |
| 129 | rec.key.allResolvedTypes = resolvedTypes; |
| 130 | } else { |
| 131 | rec.key.allIntents = null; |
| 132 | rec.key.allResolvedTypes = null; |
| 133 | } |
| 134 | } |
| 135 | return rec; |
| 136 | } |
| 137 | makeIntentSenderCanceled(rec); |
| 138 | mIntentSenderRecords.remove(key); |
| 139 | } |
| 140 | if (noCreate) { |
| 141 | return rec; |
| 142 | } |
| 143 | rec = new PendingIntentRecord(this, key, callingUid); |
| 144 | mIntentSenderRecords.put(key, rec.ref); |
| 145 | return rec; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | boolean removePendingIntentsForPackage(String packageName, int userId, int appId, |
| 150 | boolean doIt) { |
| 151 | |
| 152 | boolean didSomething = false; |
| 153 | synchronized (mLock) { |
| 154 | |
| 155 | // Remove pending intents. For now we only do this when force stopping users, because |
| 156 | // we have some problems when doing this for packages -- app widgets are not currently |
| 157 | // cleaned up for such packages, so they can be left with bad pending intents. |
| 158 | if (mIntentSenderRecords.size() <= 0) { |
| 159 | return false; |
| 160 | } |
| 161 | |
| 162 | Iterator<WeakReference<PendingIntentRecord>> it |
| 163 | = mIntentSenderRecords.values().iterator(); |
| 164 | while (it.hasNext()) { |
| 165 | WeakReference<PendingIntentRecord> wpir = it.next(); |
| 166 | if (wpir == null) { |
| 167 | it.remove(); |
| 168 | continue; |
| 169 | } |
| 170 | PendingIntentRecord pir = wpir.get(); |
| 171 | if (pir == null) { |
| 172 | it.remove(); |
| 173 | continue; |
| 174 | } |
| 175 | if (packageName == null) { |
| 176 | // Stopping user, remove all objects for the user. |
| 177 | if (pir.key.userId != userId) { |
| 178 | // Not the same user, skip it. |
| 179 | continue; |
| 180 | } |
| 181 | } else { |
| 182 | if (UserHandle.getAppId(pir.uid) != appId) { |
| 183 | // Different app id, skip it. |
| 184 | continue; |
| 185 | } |
| 186 | if (userId != UserHandle.USER_ALL && pir.key.userId != userId) { |
| 187 | // Different user, skip it. |
| 188 | continue; |
| 189 | } |
| 190 | if (!pir.key.packageName.equals(packageName)) { |
| 191 | // Different package, skip it. |
| 192 | continue; |
| 193 | } |
| 194 | } |
| 195 | if (!doIt) { |
| 196 | return true; |
| 197 | } |
| 198 | didSomething = true; |
| 199 | it.remove(); |
| 200 | makeIntentSenderCanceled(pir); |
| 201 | if (pir.key.activity != null) { |
| 202 | final Message m = PooledLambda.obtainMessage( |
| 203 | PendingIntentController::clearPendingResultForActivity, this, |
| 204 | pir.key.activity, pir.ref); |
| 205 | mH.sendMessage(m); |
| 206 | } |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | return didSomething; |
| 211 | } |
| 212 | |
| 213 | public void cancelIntentSender(IIntentSender sender) { |
| 214 | if (!(sender instanceof PendingIntentRecord)) { |
| 215 | return; |
| 216 | } |
| 217 | synchronized (mLock) { |
| 218 | final PendingIntentRecord rec = (PendingIntentRecord) sender; |
| 219 | try { |
| 220 | final int uid = AppGlobals.getPackageManager().getPackageUid(rec.key.packageName, |
| 221 | MATCH_DEBUG_TRIAGED_MISSING, UserHandle.getCallingUserId()); |
| 222 | if (!UserHandle.isSameApp(uid, Binder.getCallingUid())) { |
| 223 | String msg = "Permission Denial: cancelIntentSender() from pid=" |
| 224 | + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid() |
| 225 | + " is not allowed to cancel package " + rec.key.packageName; |
| 226 | Slog.w(TAG, msg); |
| 227 | throw new SecurityException(msg); |
| 228 | } |
| 229 | } catch (RemoteException e) { |
| 230 | throw new SecurityException(e); |
| 231 | } |
| 232 | cancelIntentSender(rec, true); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | public void cancelIntentSender(PendingIntentRecord rec, boolean cleanActivity) { |
| 237 | synchronized (mLock) { |
| 238 | makeIntentSenderCanceled(rec); |
| 239 | mIntentSenderRecords.remove(rec.key); |
| 240 | if (cleanActivity && rec.key.activity != null) { |
| 241 | final Message m = PooledLambda.obtainMessage( |
| 242 | PendingIntentController::clearPendingResultForActivity, this, |
| 243 | rec.key.activity, rec.ref); |
| 244 | mH.sendMessage(m); |
| 245 | } |
| 246 | } |
| 247 | } |
| 248 | |
Suprabh Shukla | cefb4b5 | 2019-06-10 16:25:35 -0700 | [diff] [blame] | 249 | void registerIntentSenderCancelListener(IIntentSender sender, IResultReceiver receiver) { |
| 250 | if (!(sender instanceof PendingIntentRecord)) { |
| 251 | return; |
| 252 | } |
| 253 | boolean isCancelled; |
| 254 | synchronized (mLock) { |
| 255 | PendingIntentRecord pendingIntent = (PendingIntentRecord) sender; |
| 256 | isCancelled = pendingIntent.canceled; |
| 257 | if (!isCancelled) { |
| 258 | pendingIntent.registerCancelListenerLocked(receiver); |
| 259 | } |
| 260 | } |
| 261 | if (isCancelled) { |
| 262 | try { |
| 263 | receiver.send(Activity.RESULT_CANCELED, null); |
| 264 | } catch (RemoteException e) { |
| 265 | } |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | void unregisterIntentSenderCancelListener(IIntentSender sender, |
| 270 | IResultReceiver receiver) { |
| 271 | if (!(sender instanceof PendingIntentRecord)) { |
| 272 | return; |
| 273 | } |
| 274 | synchronized (mLock) { |
| 275 | ((PendingIntentRecord) sender).unregisterCancelListenerLocked(receiver); |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | void setPendingIntentWhitelistDuration(IIntentSender target, IBinder whitelistToken, |
| 280 | long duration) { |
| 281 | if (!(target instanceof PendingIntentRecord)) { |
| 282 | Slog.w(TAG, "markAsSentFromNotification(): not a PendingIntentRecord: " + target); |
| 283 | return; |
| 284 | } |
| 285 | synchronized (mLock) { |
| 286 | ((PendingIntentRecord) target).setWhitelistDurationLocked(whitelistToken, duration); |
| 287 | } |
| 288 | } |
| 289 | |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 290 | private void makeIntentSenderCanceled(PendingIntentRecord rec) { |
| 291 | rec.canceled = true; |
| 292 | final RemoteCallbackList<IResultReceiver> callbacks = rec.detachCancelListenersLocked(); |
| 293 | if (callbacks != null) { |
| 294 | final Message m = PooledLambda.obtainMessage( |
| 295 | PendingIntentController::handlePendingIntentCancelled, this, callbacks); |
| 296 | mH.sendMessage(m); |
| 297 | } |
Suprabh Shukla | 0d51a8b | 2019-10-30 18:56:44 -0700 | [diff] [blame] | 298 | final AlarmManagerInternal ami = LocalServices.getService(AlarmManagerInternal.class); |
| 299 | ami.remove(new PendingIntent(rec)); |
Wale Ogunwale | ee6eca1 | 2018-09-19 20:37:53 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | private void handlePendingIntentCancelled(RemoteCallbackList<IResultReceiver> callbacks) { |
| 303 | int N = callbacks.beginBroadcast(); |
| 304 | for (int i = 0; i < N; i++) { |
| 305 | try { |
| 306 | callbacks.getBroadcastItem(i).send(Activity.RESULT_CANCELED, null); |
| 307 | } catch (RemoteException e) { |
| 308 | // Process is not longer running...whatever. |
| 309 | } |
| 310 | } |
| 311 | callbacks.finishBroadcast(); |
| 312 | // We have to clean up the RemoteCallbackList here, because otherwise it will |
| 313 | // needlessly hold the enclosed callbacks until the remote process dies. |
| 314 | callbacks.kill(); |
| 315 | } |
| 316 | |
| 317 | private void clearPendingResultForActivity(IBinder activityToken, |
| 318 | WeakReference<PendingIntentRecord> pir) { |
| 319 | mAtmInternal.clearPendingResultForActivity(activityToken, pir); |
| 320 | } |
| 321 | |
| 322 | void dumpPendingIntents(PrintWriter pw, boolean dumpAll, String dumpPackage) { |
| 323 | synchronized (mLock) { |
| 324 | boolean printed = false; |
| 325 | |
| 326 | pw.println("ACTIVITY MANAGER PENDING INTENTS (dumpsys activity intents)"); |
| 327 | |
| 328 | if (mIntentSenderRecords.size() > 0) { |
| 329 | // Organize these by package name, so they are easier to read. |
| 330 | final ArrayMap<String, ArrayList<PendingIntentRecord>> byPackage = new ArrayMap<>(); |
| 331 | final ArrayList<WeakReference<PendingIntentRecord>> weakRefs = new ArrayList<>(); |
| 332 | final Iterator<WeakReference<PendingIntentRecord>> it |
| 333 | = mIntentSenderRecords.values().iterator(); |
| 334 | while (it.hasNext()) { |
| 335 | WeakReference<PendingIntentRecord> ref = it.next(); |
| 336 | PendingIntentRecord rec = ref != null ? ref.get() : null; |
| 337 | if (rec == null) { |
| 338 | weakRefs.add(ref); |
| 339 | continue; |
| 340 | } |
| 341 | if (dumpPackage != null && !dumpPackage.equals(rec.key.packageName)) { |
| 342 | continue; |
| 343 | } |
| 344 | ArrayList<PendingIntentRecord> list = byPackage.get(rec.key.packageName); |
| 345 | if (list == null) { |
| 346 | list = new ArrayList<>(); |
| 347 | byPackage.put(rec.key.packageName, list); |
| 348 | } |
| 349 | list.add(rec); |
| 350 | } |
| 351 | for (int i = 0; i < byPackage.size(); i++) { |
| 352 | ArrayList<PendingIntentRecord> intents = byPackage.valueAt(i); |
| 353 | printed = true; |
| 354 | pw.print(" * "); pw.print(byPackage.keyAt(i)); |
| 355 | pw.print(": "); pw.print(intents.size()); pw.println(" items"); |
| 356 | for (int j = 0; j < intents.size(); j++) { |
| 357 | pw.print(" #"); pw.print(j); pw.print(": "); pw.println(intents.get(j)); |
| 358 | if (dumpAll) { |
| 359 | intents.get(j).dump(pw, " "); |
| 360 | } |
| 361 | } |
| 362 | } |
| 363 | if (weakRefs.size() > 0) { |
| 364 | printed = true; |
| 365 | pw.println(" * WEAK REFS:"); |
| 366 | for (int i = 0; i < weakRefs.size(); i++) { |
| 367 | pw.print(" #"); pw.print(i); pw.print(": "); pw.println(weakRefs.get(i)); |
| 368 | } |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | if (!printed) { |
| 373 | pw.println(" (nothing)"); |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | } |