AppOpsService.java revision f5d831915dd11e77cdcf5669228c55fe17a21c5e
1/* 2 * Copyright (C) 2012 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.server; 18 19import java.io.File; 20import java.io.FileDescriptor; 21import java.io.FileInputStream; 22import java.io.FileNotFoundException; 23import java.io.FileOutputStream; 24import java.io.IOException; 25import java.io.PrintWriter; 26import java.util.ArrayList; 27import java.util.HashMap; 28import java.util.Iterator; 29import java.util.List; 30import java.util.Map; 31 32import android.app.AppOpsManager; 33import android.content.Context; 34import android.content.pm.PackageManager; 35import android.content.pm.PackageManager.NameNotFoundException; 36import android.os.AsyncTask; 37import android.os.Binder; 38import android.os.Handler; 39import android.os.IBinder; 40import android.os.Process; 41import android.os.RemoteException; 42import android.os.ServiceManager; 43import android.os.UserHandle; 44import android.util.ArrayMap; 45import android.util.AtomicFile; 46import android.util.Log; 47import android.util.Pair; 48import android.util.Slog; 49import android.util.SparseArray; 50import android.util.TimeUtils; 51import android.util.Xml; 52 53import com.android.internal.app.IAppOpsService; 54import com.android.internal.app.IAppOpsCallback; 55import com.android.internal.util.FastXmlSerializer; 56import com.android.internal.util.XmlUtils; 57 58import org.xmlpull.v1.XmlPullParser; 59import org.xmlpull.v1.XmlPullParserException; 60import org.xmlpull.v1.XmlSerializer; 61 62public class AppOpsService extends IAppOpsService.Stub { 63 static final String TAG = "AppOps"; 64 static final boolean DEBUG = false; 65 66 // Write at most every 30 minutes. 67 static final long WRITE_DELAY = DEBUG ? 1000 : 30*60*1000; 68 69 Context mContext; 70 final AtomicFile mFile; 71 final Handler mHandler; 72 73 boolean mWriteScheduled; 74 final Runnable mWriteRunner = new Runnable() { 75 public void run() { 76 synchronized (AppOpsService.this) { 77 mWriteScheduled = false; 78 AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() { 79 @Override protected Void doInBackground(Void... params) { 80 writeState(); 81 return null; 82 } 83 }; 84 task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[])null); 85 } 86 } 87 }; 88 89 final SparseArray<HashMap<String, Ops>> mUidOps 90 = new SparseArray<HashMap<String, Ops>>(); 91 92 public final static class Ops extends SparseArray<Op> { 93 public final String packageName; 94 public final int uid; 95 96 public Ops(String _packageName, int _uid) { 97 packageName = _packageName; 98 uid = _uid; 99 } 100 } 101 102 public final static class Op { 103 public final int uid; 104 public final String packageName; 105 public final int op; 106 public int mode; 107 public int duration; 108 public long time; 109 public long rejectTime; 110 public int nesting; 111 112 public Op(int _uid, String _packageName, int _op) { 113 uid = _uid; 114 packageName = _packageName; 115 op = _op; 116 mode = AppOpsManager.opToDefaultMode(op); 117 } 118 } 119 120 final SparseArray<ArrayList<Callback>> mOpModeWatchers 121 = new SparseArray<ArrayList<Callback>>(); 122 final ArrayMap<String, ArrayList<Callback>> mPackageModeWatchers 123 = new ArrayMap<String, ArrayList<Callback>>(); 124 final ArrayMap<IBinder, Callback> mModeWatchers 125 = new ArrayMap<IBinder, Callback>(); 126 127 public final class Callback implements DeathRecipient { 128 final IAppOpsCallback mCallback; 129 130 public Callback(IAppOpsCallback callback) { 131 mCallback = callback; 132 try { 133 mCallback.asBinder().linkToDeath(this, 0); 134 } catch (RemoteException e) { 135 } 136 } 137 138 public void unlinkToDeath() { 139 mCallback.asBinder().unlinkToDeath(this, 0); 140 } 141 142 @Override 143 public void binderDied() { 144 stopWatchingMode(mCallback); 145 } 146 } 147 148 final ArrayMap<IBinder, ClientState> mClients = new ArrayMap<IBinder, ClientState>(); 149 150 public final class ClientState extends Binder implements DeathRecipient { 151 final IBinder mAppToken; 152 final int mPid; 153 final ArrayList<Op> mStartedOps; 154 155 public ClientState(IBinder appToken) { 156 mAppToken = appToken; 157 mPid = Binder.getCallingPid(); 158 if (appToken instanceof Binder) { 159 // For local clients, there is no reason to track them. 160 mStartedOps = null; 161 } else { 162 mStartedOps = new ArrayList<Op>(); 163 try { 164 mAppToken.linkToDeath(this, 0); 165 } catch (RemoteException e) { 166 } 167 } 168 } 169 170 @Override 171 public String toString() { 172 return "ClientState{" + 173 "mAppToken=" + mAppToken + 174 ", " + (mStartedOps != null ? ("pid=" + mPid) : "local") + 175 '}'; 176 } 177 178 @Override 179 public void binderDied() { 180 synchronized (AppOpsService.this) { 181 for (int i=mStartedOps.size()-1; i>=0; i--) { 182 finishOperationLocked(mStartedOps.get(i)); 183 } 184 mClients.remove(mAppToken); 185 } 186 } 187 } 188 189 public AppOpsService(File storagePath) { 190 mFile = new AtomicFile(storagePath); 191 mHandler = new Handler(); 192 readState(); 193 } 194 195 public void publish(Context context) { 196 mContext = context; 197 ServiceManager.addService(Context.APP_OPS_SERVICE, asBinder()); 198 } 199 200 public void systemReady() { 201 synchronized (this) { 202 boolean changed = false; 203 for (int i=0; i<mUidOps.size(); i++) { 204 HashMap<String, Ops> pkgs = mUidOps.valueAt(i); 205 Iterator<Ops> it = pkgs.values().iterator(); 206 while (it.hasNext()) { 207 Ops ops = it.next(); 208 int curUid; 209 try { 210 curUid = mContext.getPackageManager().getPackageUid(ops.packageName, 211 UserHandle.getUserId(ops.uid)); 212 } catch (NameNotFoundException e) { 213 curUid = -1; 214 } 215 if (curUid != ops.uid) { 216 Slog.i(TAG, "Pruning old package " + ops.packageName 217 + "/" + ops.uid + ": new uid=" + curUid); 218 it.remove(); 219 changed = true; 220 } 221 } 222 if (pkgs.size() <= 0) { 223 mUidOps.removeAt(i); 224 } 225 } 226 if (changed) { 227 scheduleWriteLocked(); 228 } 229 } 230 } 231 232 public void packageRemoved(int uid, String packageName) { 233 synchronized (this) { 234 HashMap<String, Ops> pkgs = mUidOps.get(uid); 235 if (pkgs != null) { 236 if (pkgs.remove(packageName) != null) { 237 if (pkgs.size() <= 0) { 238 mUidOps.remove(uid); 239 } 240 scheduleWriteLocked(); 241 } 242 } 243 } 244 } 245 246 public void uidRemoved(int uid) { 247 synchronized (this) { 248 if (mUidOps.indexOfKey(uid) >= 0) { 249 mUidOps.remove(uid); 250 scheduleWriteLocked(); 251 } 252 } 253 } 254 255 public void shutdown() { 256 Slog.w(TAG, "Writing app ops before shutdown..."); 257 boolean doWrite = false; 258 synchronized (this) { 259 if (mWriteScheduled) { 260 mWriteScheduled = false; 261 doWrite = true; 262 } 263 } 264 if (doWrite) { 265 writeState(); 266 } 267 } 268 269 private ArrayList<AppOpsManager.OpEntry> collectOps(Ops pkgOps, int[] ops) { 270 ArrayList<AppOpsManager.OpEntry> resOps = null; 271 if (ops == null) { 272 resOps = new ArrayList<AppOpsManager.OpEntry>(); 273 for (int j=0; j<pkgOps.size(); j++) { 274 Op curOp = pkgOps.valueAt(j); 275 resOps.add(new AppOpsManager.OpEntry(curOp.op, curOp.mode, curOp.time, 276 curOp.rejectTime, curOp.duration)); 277 } 278 } else { 279 for (int j=0; j<ops.length; j++) { 280 Op curOp = pkgOps.get(ops[j]); 281 if (curOp != null) { 282 if (resOps == null) { 283 resOps = new ArrayList<AppOpsManager.OpEntry>(); 284 } 285 resOps.add(new AppOpsManager.OpEntry(curOp.op, curOp.mode, curOp.time, 286 curOp.rejectTime, curOp.duration)); 287 } 288 } 289 } 290 return resOps; 291 } 292 293 @Override 294 public List<AppOpsManager.PackageOps> getPackagesForOps(int[] ops) { 295 mContext.enforcePermission(android.Manifest.permission.GET_APP_OPS_STATS, 296 Binder.getCallingPid(), Binder.getCallingUid(), null); 297 ArrayList<AppOpsManager.PackageOps> res = null; 298 synchronized (this) { 299 for (int i=0; i<mUidOps.size(); i++) { 300 HashMap<String, Ops> packages = mUidOps.valueAt(i); 301 for (Ops pkgOps : packages.values()) { 302 ArrayList<AppOpsManager.OpEntry> resOps = collectOps(pkgOps, ops); 303 if (resOps != null) { 304 if (res == null) { 305 res = new ArrayList<AppOpsManager.PackageOps>(); 306 } 307 AppOpsManager.PackageOps resPackage = new AppOpsManager.PackageOps( 308 pkgOps.packageName, pkgOps.uid, resOps); 309 res.add(resPackage); 310 } 311 } 312 } 313 } 314 return res; 315 } 316 317 @Override 318 public List<AppOpsManager.PackageOps> getOpsForPackage(int uid, String packageName, 319 int[] ops) { 320 mContext.enforcePermission(android.Manifest.permission.GET_APP_OPS_STATS, 321 Binder.getCallingPid(), Binder.getCallingUid(), null); 322 synchronized (this) { 323 Ops pkgOps = getOpsLocked(uid, packageName, false); 324 if (pkgOps == null) { 325 return null; 326 } 327 ArrayList<AppOpsManager.OpEntry> resOps = collectOps(pkgOps, ops); 328 if (resOps == null) { 329 return null; 330 } 331 ArrayList<AppOpsManager.PackageOps> res = new ArrayList<AppOpsManager.PackageOps>(); 332 AppOpsManager.PackageOps resPackage = new AppOpsManager.PackageOps( 333 pkgOps.packageName, pkgOps.uid, resOps); 334 res.add(resPackage); 335 return res; 336 } 337 } 338 339 private void pruneOp(Op op, int uid, String packageName) { 340 if (op.time == 0 && op.rejectTime == 0) { 341 Ops ops = getOpsLocked(uid, packageName, false); 342 if (ops != null) { 343 ops.remove(op.op); 344 if (ops.size() <= 0) { 345 HashMap<String, Ops> pkgOps = mUidOps.get(uid); 346 if (pkgOps != null) { 347 pkgOps.remove(ops.packageName); 348 if (pkgOps.size() <= 0) { 349 mUidOps.remove(uid); 350 } 351 } 352 } 353 } 354 } 355 } 356 357 @Override 358 public void setMode(int code, int uid, String packageName, int mode) { 359 verifyIncomingUid(uid); 360 verifyIncomingOp(code); 361 ArrayList<Callback> repCbs = null; 362 code = AppOpsManager.opToSwitch(code); 363 synchronized (this) { 364 Op op = getOpLocked(code, uid, packageName, true); 365 if (op != null) { 366 if (op.mode != mode) { 367 op.mode = mode; 368 ArrayList<Callback> cbs = mOpModeWatchers.get(code); 369 if (cbs != null) { 370 if (repCbs == null) { 371 repCbs = new ArrayList<Callback>(); 372 } 373 repCbs.addAll(cbs); 374 } 375 cbs = mPackageModeWatchers.get(packageName); 376 if (cbs != null) { 377 if (repCbs == null) { 378 repCbs = new ArrayList<Callback>(); 379 } 380 repCbs.addAll(cbs); 381 } 382 if (mode == AppOpsManager.opToDefaultMode(op.op)) { 383 // If going into the default mode, prune this op 384 // if there is nothing else interesting in it. 385 pruneOp(op, uid, packageName); 386 } 387 scheduleWriteNowLocked(); 388 } 389 } 390 } 391 if (repCbs != null) { 392 for (int i=0; i<repCbs.size(); i++) { 393 try { 394 repCbs.get(i).mCallback.opChanged(code, packageName); 395 } catch (RemoteException e) { 396 } 397 } 398 } 399 } 400 401 private static HashMap<Callback, ArrayList<Pair<String, Integer>>> addCallbacks( 402 HashMap<Callback, ArrayList<Pair<String, Integer>>> callbacks, 403 String packageName, int op, ArrayList<Callback> cbs) { 404 if (cbs == null) { 405 return callbacks; 406 } 407 if (callbacks == null) { 408 callbacks = new HashMap<Callback, ArrayList<Pair<String, Integer>>>(); 409 } 410 for (int i=0; i<cbs.size(); i++) { 411 Callback cb = cbs.get(i); 412 ArrayList<Pair<String, Integer>> reports = callbacks.get(cb); 413 if (reports == null) { 414 reports = new ArrayList<Pair<String, Integer>>(); 415 callbacks.put(cb, reports); 416 } 417 reports.add(new Pair<String, Integer>(packageName, op)); 418 } 419 return callbacks; 420 } 421 422 @Override 423 public void resetAllModes() { 424 mContext.enforcePermission(android.Manifest.permission.UPDATE_APP_OPS_STATS, 425 Binder.getCallingPid(), Binder.getCallingUid(), null); 426 HashMap<Callback, ArrayList<Pair<String, Integer>>> callbacks = null; 427 synchronized (this) { 428 boolean changed = false; 429 for (int i=mUidOps.size()-1; i>=0; i--) { 430 HashMap<String, Ops> packages = mUidOps.valueAt(i); 431 Iterator<Map.Entry<String, Ops>> it = packages.entrySet().iterator(); 432 while (it.hasNext()) { 433 Map.Entry<String, Ops> ent = it.next(); 434 String packageName = ent.getKey(); 435 Ops pkgOps = ent.getValue(); 436 for (int j=pkgOps.size()-1; j>=0; j--) { 437 Op curOp = pkgOps.valueAt(j); 438 if (curOp.mode != AppOpsManager.opToDefaultMode(curOp.op)) { 439 curOp.mode = AppOpsManager.opToDefaultMode(curOp.op); 440 changed = true; 441 callbacks = addCallbacks(callbacks, packageName, curOp.op, 442 mOpModeWatchers.get(curOp.op)); 443 callbacks = addCallbacks(callbacks, packageName, curOp.op, 444 mPackageModeWatchers.get(packageName)); 445 if (curOp.time == 0 && curOp.rejectTime == 0) { 446 pkgOps.removeAt(j); 447 } 448 } 449 } 450 if (pkgOps.size() == 0) { 451 it.remove(); 452 } 453 } 454 if (packages.size() == 0) { 455 mUidOps.removeAt(i); 456 } 457 } 458 if (changed) { 459 scheduleWriteNowLocked(); 460 } 461 } 462 if (callbacks != null) { 463 for (Map.Entry<Callback, ArrayList<Pair<String, Integer>>> ent : callbacks.entrySet()) { 464 Callback cb = ent.getKey(); 465 ArrayList<Pair<String, Integer>> reports = ent.getValue(); 466 for (int i=0; i<reports.size(); i++) { 467 Pair<String, Integer> rep = reports.get(i); 468 try { 469 cb.mCallback.opChanged(rep.second, rep.first); 470 } catch (RemoteException e) { 471 } 472 } 473 } 474 } 475 } 476 477 @Override 478 public void startWatchingMode(int op, String packageName, IAppOpsCallback callback) { 479 synchronized (this) { 480 op = AppOpsManager.opToSwitch(op); 481 Callback cb = mModeWatchers.get(callback.asBinder()); 482 if (cb == null) { 483 cb = new Callback(callback); 484 mModeWatchers.put(callback.asBinder(), cb); 485 } 486 if (op != AppOpsManager.OP_NONE) { 487 ArrayList<Callback> cbs = mOpModeWatchers.get(op); 488 if (cbs == null) { 489 cbs = new ArrayList<Callback>(); 490 mOpModeWatchers.put(op, cbs); 491 } 492 cbs.add(cb); 493 } 494 if (packageName != null) { 495 ArrayList<Callback> cbs = mPackageModeWatchers.get(packageName); 496 if (cbs == null) { 497 cbs = new ArrayList<Callback>(); 498 mPackageModeWatchers.put(packageName, cbs); 499 } 500 cbs.add(cb); 501 } 502 } 503 } 504 505 @Override 506 public void stopWatchingMode(IAppOpsCallback callback) { 507 synchronized (this) { 508 Callback cb = mModeWatchers.remove(callback.asBinder()); 509 if (cb != null) { 510 cb.unlinkToDeath(); 511 for (int i=mOpModeWatchers.size()-1; i>=0; i--) { 512 ArrayList<Callback> cbs = mOpModeWatchers.valueAt(i); 513 cbs.remove(cb); 514 if (cbs.size() <= 0) { 515 mOpModeWatchers.removeAt(i); 516 } 517 } 518 for (int i=mPackageModeWatchers.size()-1; i>=0; i--) { 519 ArrayList<Callback> cbs = mPackageModeWatchers.valueAt(i); 520 cbs.remove(cb); 521 if (cbs.size() <= 0) { 522 mPackageModeWatchers.removeAt(i); 523 } 524 } 525 } 526 } 527 } 528 529 @Override 530 public IBinder getToken(IBinder clientToken) { 531 synchronized (this) { 532 ClientState cs = mClients.get(clientToken); 533 if (cs == null) { 534 cs = new ClientState(clientToken); 535 mClients.put(clientToken, cs); 536 } 537 return cs; 538 } 539 } 540 541 @Override 542 public int checkOperation(int code, int uid, String packageName) { 543 verifyIncomingUid(uid); 544 verifyIncomingOp(code); 545 synchronized (this) { 546 Op op = getOpLocked(AppOpsManager.opToSwitch(code), uid, packageName, false); 547 if (op == null) { 548 return AppOpsManager.opToDefaultMode(code); 549 } 550 return op.mode; 551 } 552 } 553 554 @Override 555 public int checkPackage(int uid, String packageName) { 556 synchronized (this) { 557 if (getOpsLocked(uid, packageName, true) != null) { 558 return AppOpsManager.MODE_ALLOWED; 559 } else { 560 return AppOpsManager.MODE_ERRORED; 561 } 562 } 563 } 564 565 @Override 566 public int noteOperation(int code, int uid, String packageName) { 567 verifyIncomingUid(uid); 568 verifyIncomingOp(code); 569 synchronized (this) { 570 Ops ops = getOpsLocked(uid, packageName, true); 571 if (ops == null) { 572 if (DEBUG) Log.d(TAG, "noteOperation: no op for code " + code + " uid " + uid 573 + " package " + packageName); 574 return AppOpsManager.MODE_ERRORED; 575 } 576 Op op = getOpLocked(ops, code, true); 577 if (op.duration == -1) { 578 Slog.w(TAG, "Noting op not finished: uid " + uid + " pkg " + packageName 579 + " code " + code + " time=" + op.time + " duration=" + op.duration); 580 } 581 op.duration = 0; 582 final int switchCode = AppOpsManager.opToSwitch(code); 583 final Op switchOp = switchCode != code ? getOpLocked(ops, switchCode, true) : op; 584 if (switchOp.mode != AppOpsManager.MODE_ALLOWED) { 585 if (DEBUG) Log.d(TAG, "noteOperation: reject #" + op.mode + " for code " 586 + switchCode + " (" + code + ") uid " + uid + " package " + packageName); 587 op.rejectTime = System.currentTimeMillis(); 588 return switchOp.mode; 589 } 590 if (DEBUG) Log.d(TAG, "noteOperation: allowing code " + code + " uid " + uid 591 + " package " + packageName); 592 op.time = System.currentTimeMillis(); 593 op.rejectTime = 0; 594 return AppOpsManager.MODE_ALLOWED; 595 } 596 } 597 598 @Override 599 public int startOperation(IBinder token, int code, int uid, String packageName) { 600 verifyIncomingUid(uid); 601 verifyIncomingOp(code); 602 ClientState client = (ClientState)token; 603 synchronized (this) { 604 Ops ops = getOpsLocked(uid, packageName, true); 605 if (ops == null) { 606 if (DEBUG) Log.d(TAG, "startOperation: no op for code " + code + " uid " + uid 607 + " package " + packageName); 608 return AppOpsManager.MODE_ERRORED; 609 } 610 Op op = getOpLocked(ops, code, true); 611 final int switchCode = AppOpsManager.opToSwitch(code); 612 final Op switchOp = switchCode != code ? getOpLocked(ops, switchCode, true) : op; 613 if (switchOp.mode != AppOpsManager.MODE_ALLOWED) { 614 if (DEBUG) Log.d(TAG, "startOperation: reject #" + op.mode + " for code " 615 + switchCode + " (" + code + ") uid " + uid + " package " + packageName); 616 op.rejectTime = System.currentTimeMillis(); 617 return switchOp.mode; 618 } 619 if (DEBUG) Log.d(TAG, "startOperation: allowing code " + code + " uid " + uid 620 + " package " + packageName); 621 if (op.nesting == 0) { 622 op.time = System.currentTimeMillis(); 623 op.rejectTime = 0; 624 op.duration = -1; 625 } 626 op.nesting++; 627 if (client.mStartedOps != null) { 628 client.mStartedOps.add(op); 629 } 630 return AppOpsManager.MODE_ALLOWED; 631 } 632 } 633 634 @Override 635 public void finishOperation(IBinder token, int code, int uid, String packageName) { 636 verifyIncomingUid(uid); 637 verifyIncomingOp(code); 638 ClientState client = (ClientState)token; 639 synchronized (this) { 640 Op op = getOpLocked(code, uid, packageName, true); 641 if (op == null) { 642 return; 643 } 644 if (client.mStartedOps != null) { 645 if (!client.mStartedOps.remove(op)) { 646 throw new IllegalStateException("Operation not started: uid" + op.uid 647 + " pkg=" + op.packageName + " op=" + op.op); 648 } 649 } 650 finishOperationLocked(op); 651 } 652 } 653 654 void finishOperationLocked(Op op) { 655 if (op.nesting <= 1) { 656 if (op.nesting == 1) { 657 op.duration = (int)(System.currentTimeMillis() - op.time); 658 op.time += op.duration; 659 } else { 660 Slog.w(TAG, "Finishing op nesting under-run: uid " + op.uid + " pkg " 661 + op.packageName + " code " + op.op + " time=" + op.time 662 + " duration=" + op.duration + " nesting=" + op.nesting); 663 } 664 op.nesting = 0; 665 } else { 666 op.nesting--; 667 } 668 } 669 670 private void verifyIncomingUid(int uid) { 671 if (uid == Binder.getCallingUid()) { 672 return; 673 } 674 if (Binder.getCallingPid() == Process.myPid()) { 675 return; 676 } 677 mContext.enforcePermission(android.Manifest.permission.UPDATE_APP_OPS_STATS, 678 Binder.getCallingPid(), Binder.getCallingUid(), null); 679 } 680 681 private void verifyIncomingOp(int op) { 682 if (op >= 0 && op < AppOpsManager._NUM_OP) { 683 return; 684 } 685 throw new IllegalArgumentException("Bad operation #" + op); 686 } 687 688 private Ops getOpsLocked(int uid, String packageName, boolean edit) { 689 HashMap<String, Ops> pkgOps = mUidOps.get(uid); 690 if (pkgOps == null) { 691 if (!edit) { 692 return null; 693 } 694 pkgOps = new HashMap<String, Ops>(); 695 mUidOps.put(uid, pkgOps); 696 } 697 if (uid == 0) { 698 packageName = "root"; 699 } else if (uid == Process.SHELL_UID) { 700 packageName = "com.android.shell"; 701 } 702 Ops ops = pkgOps.get(packageName); 703 if (ops == null) { 704 if (!edit) { 705 return null; 706 } 707 // This is the first time we have seen this package name under this uid, 708 // so let's make sure it is valid. 709 if (uid != 0) { 710 final long ident = Binder.clearCallingIdentity(); 711 try { 712 int pkgUid = -1; 713 try { 714 pkgUid = mContext.getPackageManager().getPackageUid(packageName, 715 UserHandle.getUserId(uid)); 716 } catch (NameNotFoundException e) { 717 if ("media".equals(packageName)) { 718 pkgUid = Process.MEDIA_UID; 719 } 720 } 721 if (pkgUid != uid) { 722 // Oops! The package name is not valid for the uid they are calling 723 // under. Abort. 724 Slog.w(TAG, "Bad call: specified package " + packageName 725 + " under uid " + uid + " but it is really " + pkgUid); 726 return null; 727 } 728 } finally { 729 Binder.restoreCallingIdentity(ident); 730 } 731 } 732 ops = new Ops(packageName, uid); 733 pkgOps.put(packageName, ops); 734 } 735 return ops; 736 } 737 738 private void scheduleWriteLocked() { 739 if (!mWriteScheduled) { 740 mWriteScheduled = true; 741 mHandler.postDelayed(mWriteRunner, WRITE_DELAY); 742 } 743 } 744 745 private void scheduleWriteNowLocked() { 746 if (!mWriteScheduled) { 747 mWriteScheduled = true; 748 } 749 mHandler.removeCallbacks(mWriteRunner); 750 mHandler.post(mWriteRunner); 751 } 752 753 private Op getOpLocked(int code, int uid, String packageName, boolean edit) { 754 Ops ops = getOpsLocked(uid, packageName, edit); 755 if (ops == null) { 756 return null; 757 } 758 return getOpLocked(ops, code, edit); 759 } 760 761 private Op getOpLocked(Ops ops, int code, boolean edit) { 762 Op op = ops.get(code); 763 if (op == null) { 764 if (!edit) { 765 return null; 766 } 767 op = new Op(ops.uid, ops.packageName, code); 768 ops.put(code, op); 769 } 770 if (edit) { 771 scheduleWriteLocked(); 772 } 773 return op; 774 } 775 776 void readState() { 777 synchronized (mFile) { 778 synchronized (this) { 779 FileInputStream stream; 780 try { 781 stream = mFile.openRead(); 782 } catch (FileNotFoundException e) { 783 Slog.i(TAG, "No existing app ops " + mFile.getBaseFile() + "; starting empty"); 784 return; 785 } 786 boolean success = false; 787 try { 788 XmlPullParser parser = Xml.newPullParser(); 789 parser.setInput(stream, null); 790 int type; 791 while ((type = parser.next()) != XmlPullParser.START_TAG 792 && type != XmlPullParser.END_DOCUMENT) { 793 ; 794 } 795 796 if (type != XmlPullParser.START_TAG) { 797 throw new IllegalStateException("no start tag found"); 798 } 799 800 int outerDepth = parser.getDepth(); 801 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 802 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 803 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 804 continue; 805 } 806 807 String tagName = parser.getName(); 808 if (tagName.equals("pkg")) { 809 readPackage(parser); 810 } else { 811 Slog.w(TAG, "Unknown element under <app-ops>: " 812 + parser.getName()); 813 XmlUtils.skipCurrentTag(parser); 814 } 815 } 816 success = true; 817 } catch (IllegalStateException e) { 818 Slog.w(TAG, "Failed parsing " + e); 819 } catch (NullPointerException e) { 820 Slog.w(TAG, "Failed parsing " + e); 821 } catch (NumberFormatException e) { 822 Slog.w(TAG, "Failed parsing " + e); 823 } catch (XmlPullParserException e) { 824 Slog.w(TAG, "Failed parsing " + e); 825 } catch (IOException e) { 826 Slog.w(TAG, "Failed parsing " + e); 827 } catch (IndexOutOfBoundsException e) { 828 Slog.w(TAG, "Failed parsing " + e); 829 } finally { 830 if (!success) { 831 mUidOps.clear(); 832 } 833 try { 834 stream.close(); 835 } catch (IOException e) { 836 } 837 } 838 } 839 } 840 } 841 842 void readPackage(XmlPullParser parser) throws NumberFormatException, 843 XmlPullParserException, IOException { 844 String pkgName = parser.getAttributeValue(null, "n"); 845 int outerDepth = parser.getDepth(); 846 int type; 847 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 848 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 849 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 850 continue; 851 } 852 853 String tagName = parser.getName(); 854 if (tagName.equals("uid")) { 855 readUid(parser, pkgName); 856 } else { 857 Slog.w(TAG, "Unknown element under <pkg>: " 858 + parser.getName()); 859 XmlUtils.skipCurrentTag(parser); 860 } 861 } 862 } 863 864 void readUid(XmlPullParser parser, String pkgName) throws NumberFormatException, 865 XmlPullParserException, IOException { 866 int uid = Integer.parseInt(parser.getAttributeValue(null, "n")); 867 int outerDepth = parser.getDepth(); 868 int type; 869 while ((type = parser.next()) != XmlPullParser.END_DOCUMENT 870 && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { 871 if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { 872 continue; 873 } 874 875 String tagName = parser.getName(); 876 if (tagName.equals("op")) { 877 Op op = new Op(uid, pkgName, Integer.parseInt(parser.getAttributeValue(null, "n"))); 878 String mode = parser.getAttributeValue(null, "m"); 879 if (mode != null) { 880 op.mode = Integer.parseInt(mode); 881 } 882 String time = parser.getAttributeValue(null, "t"); 883 if (time != null) { 884 op.time = Long.parseLong(time); 885 } 886 time = parser.getAttributeValue(null, "r"); 887 if (time != null) { 888 op.rejectTime = Long.parseLong(time); 889 } 890 String dur = parser.getAttributeValue(null, "d"); 891 if (dur != null) { 892 op.duration = Integer.parseInt(dur); 893 } 894 HashMap<String, Ops> pkgOps = mUidOps.get(uid); 895 if (pkgOps == null) { 896 pkgOps = new HashMap<String, Ops>(); 897 mUidOps.put(uid, pkgOps); 898 } 899 Ops ops = pkgOps.get(pkgName); 900 if (ops == null) { 901 ops = new Ops(pkgName, uid); 902 pkgOps.put(pkgName, ops); 903 } 904 ops.put(op.op, op); 905 } else { 906 Slog.w(TAG, "Unknown element under <pkg>: " 907 + parser.getName()); 908 XmlUtils.skipCurrentTag(parser); 909 } 910 } 911 } 912 913 void writeState() { 914 synchronized (mFile) { 915 List<AppOpsManager.PackageOps> allOps = getPackagesForOps(null); 916 917 FileOutputStream stream; 918 try { 919 stream = mFile.startWrite(); 920 } catch (IOException e) { 921 Slog.w(TAG, "Failed to write state: " + e); 922 return; 923 } 924 925 try { 926 XmlSerializer out = new FastXmlSerializer(); 927 out.setOutput(stream, "utf-8"); 928 out.startDocument(null, true); 929 out.startTag(null, "app-ops"); 930 931 if (allOps != null) { 932 String lastPkg = null; 933 for (int i=0; i<allOps.size(); i++) { 934 AppOpsManager.PackageOps pkg = allOps.get(i); 935 if (!pkg.getPackageName().equals(lastPkg)) { 936 if (lastPkg != null) { 937 out.endTag(null, "pkg"); 938 } 939 lastPkg = pkg.getPackageName(); 940 out.startTag(null, "pkg"); 941 out.attribute(null, "n", lastPkg); 942 } 943 out.startTag(null, "uid"); 944 out.attribute(null, "n", Integer.toString(pkg.getUid())); 945 List<AppOpsManager.OpEntry> ops = pkg.getOps(); 946 for (int j=0; j<ops.size(); j++) { 947 AppOpsManager.OpEntry op = ops.get(j); 948 out.startTag(null, "op"); 949 out.attribute(null, "n", Integer.toString(op.getOp())); 950 if (op.getMode() != AppOpsManager.opToDefaultMode(op.getOp())) { 951 out.attribute(null, "m", Integer.toString(op.getMode())); 952 } 953 long time = op.getTime(); 954 if (time != 0) { 955 out.attribute(null, "t", Long.toString(time)); 956 } 957 time = op.getRejectTime(); 958 if (time != 0) { 959 out.attribute(null, "r", Long.toString(time)); 960 } 961 int dur = op.getDuration(); 962 if (dur != 0) { 963 out.attribute(null, "d", Integer.toString(dur)); 964 } 965 out.endTag(null, "op"); 966 } 967 out.endTag(null, "uid"); 968 } 969 if (lastPkg != null) { 970 out.endTag(null, "pkg"); 971 } 972 } 973 974 out.endTag(null, "app-ops"); 975 out.endDocument(); 976 mFile.finishWrite(stream); 977 } catch (IOException e) { 978 Slog.w(TAG, "Failed to write state, restoring backup.", e); 979 mFile.failWrite(stream); 980 } 981 } 982 } 983 984 @Override 985 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 986 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 987 != PackageManager.PERMISSION_GRANTED) { 988 pw.println("Permission Denial: can't dump ApOps service from from pid=" 989 + Binder.getCallingPid() 990 + ", uid=" + Binder.getCallingUid()); 991 return; 992 } 993 994 synchronized (this) { 995 pw.println("Current AppOps Service state:"); 996 final long now = System.currentTimeMillis(); 997 boolean needSep = false; 998 if (mOpModeWatchers.size() > 0) { 999 needSep = true; 1000 pw.println(" Op mode watchers:"); 1001 for (int i=0; i<mOpModeWatchers.size(); i++) { 1002 pw.print(" Op "); pw.print(AppOpsManager.opToName(mOpModeWatchers.keyAt(i))); 1003 pw.println(":"); 1004 ArrayList<Callback> callbacks = mOpModeWatchers.valueAt(i); 1005 for (int j=0; j<callbacks.size(); j++) { 1006 pw.print(" #"); pw.print(j); pw.print(": "); 1007 pw.println(callbacks.get(j)); 1008 } 1009 } 1010 } 1011 if (mPackageModeWatchers.size() > 0) { 1012 needSep = true; 1013 pw.println(" Package mode watchers:"); 1014 for (int i=0; i<mPackageModeWatchers.size(); i++) { 1015 pw.print(" Pkg "); pw.print(mPackageModeWatchers.keyAt(i)); 1016 pw.println(":"); 1017 ArrayList<Callback> callbacks = mPackageModeWatchers.valueAt(i); 1018 for (int j=0; j<callbacks.size(); j++) { 1019 pw.print(" #"); pw.print(j); pw.print(": "); 1020 pw.println(callbacks.get(j)); 1021 } 1022 } 1023 } 1024 if (mModeWatchers.size() > 0) { 1025 needSep = true; 1026 pw.println(" All mode watchers:"); 1027 for (int i=0; i<mModeWatchers.size(); i++) { 1028 pw.print(" "); pw.print(mModeWatchers.keyAt(i)); 1029 pw.print(" -> "); pw.println(mModeWatchers.valueAt(i)); 1030 } 1031 } 1032 if (mClients.size() > 0) { 1033 needSep = true; 1034 pw.println(" Clients:"); 1035 for (int i=0; i<mClients.size(); i++) { 1036 pw.print(" "); pw.print(mClients.keyAt(i)); pw.println(":"); 1037 ClientState cs = mClients.valueAt(i); 1038 pw.print(" "); pw.println(cs); 1039 if (cs.mStartedOps != null && cs.mStartedOps.size() > 0) { 1040 pw.println(" Started ops:"); 1041 for (int j=0; j<cs.mStartedOps.size(); j++) { 1042 Op op = cs.mStartedOps.get(j); 1043 pw.print(" "); pw.print("uid="); pw.print(op.uid); 1044 pw.print(" pkg="); pw.print(op.packageName); 1045 pw.print(" op="); pw.println(AppOpsManager.opToName(op.op)); 1046 } 1047 } 1048 } 1049 } 1050 if (needSep) { 1051 pw.println(); 1052 } 1053 for (int i=0; i<mUidOps.size(); i++) { 1054 pw.print(" Uid "); UserHandle.formatUid(pw, mUidOps.keyAt(i)); pw.println(":"); 1055 HashMap<String, Ops> pkgOps = mUidOps.valueAt(i); 1056 for (Ops ops : pkgOps.values()) { 1057 pw.print(" Package "); pw.print(ops.packageName); pw.println(":"); 1058 for (int j=0; j<ops.size(); j++) { 1059 Op op = ops.valueAt(j); 1060 pw.print(" "); pw.print(AppOpsManager.opToName(op.op)); 1061 pw.print(": mode="); pw.print(op.mode); 1062 if (op.time != 0) { 1063 pw.print("; time="); TimeUtils.formatDuration(now-op.time, pw); 1064 pw.print(" ago"); 1065 } 1066 if (op.rejectTime != 0) { 1067 pw.print("; rejectTime="); TimeUtils.formatDuration(now-op.rejectTime, pw); 1068 pw.print(" ago"); 1069 } 1070 if (op.duration == -1) { 1071 pw.println(" (running)"); 1072 } else { 1073 pw.print("; duration="); 1074 TimeUtils.formatDuration(op.duration, pw); 1075 pw.println(); 1076 } 1077 } 1078 } 1079 } 1080 } 1081 } 1082} 1083