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