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Merge "Revert "Revert "AppOps refactor for mode watchers."""

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This commit is contained in:
Pyuli Naithani
2022-08-23 17:51:34 +00:00
committed by Android (Google) Code Review
parent ef2d6e021d 90e99803fe
commit b6d070d1b8
4 changed files with 678 additions and 296 deletions
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394
services/core/java/com/android/server/appop/AppOpsService.java
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@@ -63,7 +63,6 @@ import static android.app.AppOpsManager.UID_STATE_FOREGROUND_SERVICE;
import static android.app.AppOpsManager.UID_STATE_MAX_LAST_NON_RESTRICTED;
import static android.app.AppOpsManager.UID_STATE_PERSISTENT;
import static android.app.AppOpsManager.UID_STATE_TOP;
import static android.app.AppOpsManager.WATCH_FOREGROUND_CHANGES;
import static android.app.AppOpsManager._NUM_OP;
import static android.app.AppOpsManager.extractFlagsFromKey;
import static android.app.AppOpsManager.extractUidStateFromKey;
@@ -563,6 +562,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
public ArrayMap<String, Ops> pkgOps;
// true indicates there is an interested observer, false there isn't but it has such an op
//TODO: Move foregroundOps and hasForegroundWatchers into the AppOpsServiceInterface.
public SparseBooleanArray foregroundOps;
public boolean hasForegroundWatchers;
@@ -658,48 +658,24 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
return mode;
}
private void evalForegroundWatchers(int op, SparseArray<ArraySet<ModeCallback>> watchers,
SparseBooleanArray which) {
boolean curValue = which.get(op, false);
ArraySet<ModeCallback> callbacks = watchers.get(op);
if (callbacks != null) {
for (int cbi = callbacks.size() - 1; !curValue && cbi >= 0; cbi--) {
if ((callbacks.valueAt(cbi).mFlags
& AppOpsManager.WATCH_FOREGROUND_CHANGES) != 0) {
hasForegroundWatchers = true;
curValue = true;
}
}
}
which.put(op, curValue);
}
public void evalForegroundOps(SparseArray<ArraySet<ModeCallback>> watchers) {
SparseBooleanArray which = null;
hasForegroundWatchers = false;
final SparseIntArray opModes = getNonDefaultUidModes();
for (int i = opModes.size() - 1; i >= 0; i--) {
if (opModes.valueAt(i) == AppOpsManager.MODE_FOREGROUND) {
if (which == null) {
which = new SparseBooleanArray();
}
evalForegroundWatchers(opModes.keyAt(i), watchers, which);
}
}
public void evalForegroundOps() {
foregroundOps = null;
foregroundOps = mAppOpsServiceInterface.evalForegroundUidOps(uid, foregroundOps);
if (pkgOps != null) {
for (int i = pkgOps.size() - 1; i >= 0; i--) {
Ops ops = pkgOps.valueAt(i);
for (int j = ops.size() - 1; j >= 0; j--) {
if (ops.valueAt(j).getMode() == AppOpsManager.MODE_FOREGROUND) {
if (which == null) {
which = new SparseBooleanArray();
}
evalForegroundWatchers(ops.keyAt(j), watchers, which);
}
foregroundOps = mAppOpsServiceInterface
.evalForegroundPackageOps(pkgOps.valueAt(i).packageName, foregroundOps);
}
}
hasForegroundWatchers = false;
if (foregroundOps != null) {
for (int i = 0; i < foregroundOps.size(); i++) {
if (foregroundOps.valueAt(i)) {
hasForegroundWatchers = true;
break;
}
}
}
foregroundOps = which;
}
}
@@ -1562,33 +1538,24 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
}
final SparseArray<ArraySet<ModeCallback>> mOpModeWatchers = new SparseArray<>();
final ArrayMap<String, ArraySet<ModeCallback>> mPackageModeWatchers = new ArrayMap<>();
final ArrayMap<IBinder, ModeCallback> mModeWatchers = new ArrayMap<>();
final ArrayMap<IBinder, SparseArray<ActiveCallback>> mActiveWatchers = new ArrayMap<>();
final ArrayMap<IBinder, SparseArray<StartedCallback>> mStartedWatchers = new ArrayMap<>();
final ArrayMap<IBinder, SparseArray<NotedCallback>> mNotedWatchers = new ArrayMap<>();
final AudioRestrictionManager mAudioRestrictionManager = new AudioRestrictionManager();
final class ModeCallback implements DeathRecipient {
final class ModeCallback extends OnOpModeChangedListener implements DeathRecipient {
/** If mWatchedOpCode==ALL_OPS notify for ops affected by the switch-op */
public static final int ALL_OPS = -2;
final IAppOpsCallback mCallback;
final int mWatchingUid;
final int mFlags;
final int mWatchedOpCode;
final int mCallingUid;
final int mCallingPid;
// Need to keep this only because stopWatchingMode needs an IAppOpsCallback.
// Otherwise we can just use the IBinder object.
private final IAppOpsCallback mCallback;
ModeCallback(IAppOpsCallback callback, int watchingUid, int flags, int watchedOp,
ModeCallback(IAppOpsCallback callback, int watchingUid, int flags, int watchedOpCode,
int callingUid, int callingPid) {
mCallback = callback;
mWatchingUid = watchingUid;
mFlags = flags;
mWatchedOpCode = watchedOp;
mCallingUid = callingUid;
mCallingPid = callingPid;
super(watchingUid, flags, watchedOpCode, callingUid, callingPid);
this.mCallback = callback;
try {
mCallback.asBinder().linkToDeath(this, 0);
} catch (RemoteException e) {
@@ -1596,20 +1563,16 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
}
public boolean isWatchingUid(int uid) {
return uid == UID_ANY || mWatchingUid < 0 || mWatchingUid == uid;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(128);
sb.append("ModeCallback{");
sb.append(Integer.toHexString(System.identityHashCode(this)));
sb.append(" watchinguid=");
UserHandle.formatUid(sb, mWatchingUid);
UserHandle.formatUid(sb, getWatchingUid());
sb.append(" flags=0x");
sb.append(Integer.toHexString(mFlags));
switch (mWatchedOpCode) {
sb.append(Integer.toHexString(getFlags()));
switch (getWatchedOpCode()) {
case OP_NONE:
break;
case ALL_OPS:
@@ -1617,13 +1580,13 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
break;
default:
sb.append(" op=");
sb.append(opToName(mWatchedOpCode));
sb.append(opToName(getWatchedOpCode()));
break;
}
sb.append(" from uid=");
UserHandle.formatUid(sb, mCallingUid);
UserHandle.formatUid(sb, getCallingUid());
sb.append(" pid=");
sb.append(mCallingPid);
sb.append(getCallingPid());
sb.append('}');
return sb.toString();
}
@@ -1636,6 +1599,11 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
public void binderDied() {
stopWatchingMode(mCallback);
}
@Override
public void onOpModeChanged(int op, int uid, String packageName) throws RemoteException {
mCallback.opChanged(op, uid, packageName);
}
}
final class ActiveCallback implements DeathRecipient {
@@ -1804,7 +1772,14 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
public AppOpsService(File storagePath, Handler handler, Context context) {
mContext = context;
mAppOpsServiceInterface = new LegacyAppOpsServiceInterfaceImpl(this, this);
for (int switchedCode = 0; switchedCode < _NUM_OP; switchedCode++) {
int switchCode = AppOpsManager.opToSwitch(switchedCode);
mSwitchedOps.put(switchCode,
ArrayUtils.appendInt(mSwitchedOps.get(switchCode), switchedCode));
}
mAppOpsServiceInterface =
new LegacyAppOpsServiceInterfaceImpl(this, this, handler, context, mSwitchedOps);
LockGuard.installLock(this, LockGuard.INDEX_APP_OPS);
mFile = new AtomicFile(storagePath, "appops");
@@ -1818,12 +1793,6 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
mHandler = handler;
mConstants = new Constants(mHandler);
readState();
for (int switchedCode = 0; switchedCode < _NUM_OP; switchedCode++) {
int switchCode = AppOpsManager.opToSwitch(switchedCode);
mSwitchedOps.put(switchCode,
ArrayUtils.appendInt(mSwitchedOps.get(switchCode), switchedCode));
}
}
public void publish() {
@@ -1982,20 +1951,20 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
final String[] changedPkgs = intent.getStringArrayExtra(
Intent.EXTRA_CHANGED_PACKAGE_LIST);
for (int code : OPS_RESTRICTED_ON_SUSPEND) {
ArraySet<ModeCallback> callbacks;
ArraySet<OnOpModeChangedListener> onModeChangedListeners;
synchronized (AppOpsService.this) {
callbacks = mOpModeWatchers.get(code);
if (callbacks == null) {
onModeChangedListeners =
mAppOpsServiceInterface.getOpModeChangedListeners(code);
if (onModeChangedListeners == null) {
continue;
}
callbacks = new ArraySet<>(callbacks);
}
for (int i = 0; i < changedUids.length; i++) {
final int changedUid = changedUids[i];
final String changedPkg = changedPkgs[i];
// We trust packagemanager to insert matching uid and packageNames in the
// extras
notifyOpChanged(callbacks, code, changedUid, changedPkg);
notifyOpChanged(onModeChangedListeners, code, changedUid, changedPkg);
}
}
}
@@ -2596,7 +2565,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
if (!uidState.setUidMode(code, mode)) {
return;
}
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
if (mode != MODE_ERRORED && mode != previousMode) {
updateStartedOpModeForUidLocked(code, mode == MODE_IGNORED, uid);
}
@@ -2615,78 +2584,10 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
*/
private void notifyOpChangedForAllPkgsInUid(int code, int uid, boolean onlyForeground,
@Nullable IAppOpsCallback callbackToIgnore) {
String[] uidPackageNames = getPackagesForUid(uid);
ArrayMap<ModeCallback, ArraySet<String>> callbackSpecs = null;
synchronized (this) {
ArraySet<ModeCallback> callbacks = mOpModeWatchers.get(code);
if (callbacks != null) {
final int callbackCount = callbacks.size();
for (int i = 0; i < callbackCount; i++) {
ModeCallback callback = callbacks.valueAt(i);
if (onlyForeground && (callback.mFlags & WATCH_FOREGROUND_CHANGES) == 0) {
continue;
}
ArraySet<String> changedPackages = new ArraySet<>();
Collections.addAll(changedPackages, uidPackageNames);
if (callbackSpecs == null) {
callbackSpecs = new ArrayMap<>();
}
callbackSpecs.put(callback, changedPackages);
}
}
for (String uidPackageName : uidPackageNames) {
callbacks = mPackageModeWatchers.get(uidPackageName);
if (callbacks != null) {
if (callbackSpecs == null) {
callbackSpecs = new ArrayMap<>();
}
final int callbackCount = callbacks.size();
for (int i = 0; i < callbackCount; i++) {
ModeCallback callback = callbacks.valueAt(i);
if (onlyForeground && (callback.mFlags & WATCH_FOREGROUND_CHANGES) == 0) {
continue;
}
ArraySet<String> changedPackages = callbackSpecs.get(callback);
if (changedPackages == null) {
changedPackages = new ArraySet<>();
callbackSpecs.put(callback, changedPackages);
}
changedPackages.add(uidPackageName);
}
}
}
if (callbackSpecs != null && callbackToIgnore != null) {
callbackSpecs.remove(mModeWatchers.get(callbackToIgnore.asBinder()));
}
}
if (callbackSpecs == null) {
return;
}
for (int i = 0; i < callbackSpecs.size(); i++) {
final ModeCallback callback = callbackSpecs.keyAt(i);
final ArraySet<String> reportedPackageNames = callbackSpecs.valueAt(i);
if (reportedPackageNames == null) {
mHandler.sendMessage(PooledLambda.obtainMessage(
AppOpsService::notifyOpChanged,
this, callback, code, uid, (String) null));
} else {
final int reportedPackageCount = reportedPackageNames.size();
for (int j = 0; j < reportedPackageCount; j++) {
final String reportedPackageName = reportedPackageNames.valueAt(j);
mHandler.sendMessage(PooledLambda.obtainMessage(
AppOpsService::notifyOpChanged,
this, callback, code, uid, reportedPackageName));
}
}
}
ModeCallback listenerToIgnore = callbackToIgnore != null
? mModeWatchers.get(callbackToIgnore.asBinder()) : null;
mAppOpsServiceInterface.notifyOpChangedForAllPkgsInUid(code, uid, onlyForeground,
listenerToIgnore);
}
private void updatePermissionRevokedCompat(int uid, int switchCode, int mode) {
@@ -2810,7 +2711,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
return;
}
ArraySet<ModeCallback> repCbs = null;
ArraySet<OnOpModeChangedListener> repCbs = null;
code = AppOpsManager.opToSwitch(code);
PackageVerificationResult pvr;
@@ -2831,16 +2732,17 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
op.setMode(mode);
if (uidState != null) {
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
}
ArraySet<ModeCallback> cbs = mOpModeWatchers.get(code);
ArraySet<OnOpModeChangedListener> cbs =
mAppOpsServiceInterface.getOpModeChangedListeners(code);
if (cbs != null) {
if (repCbs == null) {
repCbs = new ArraySet<>();
}
repCbs.addAll(cbs);
}
cbs = mPackageModeWatchers.get(packageName);
cbs = mAppOpsServiceInterface.getPackageModeChangedListeners(packageName);
if (cbs != null) {
if (repCbs == null) {
repCbs = new ArraySet<>();
@@ -2871,47 +2773,17 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
notifyOpChangedSync(code, uid, packageName, mode, previousMode);
}
private void notifyOpChanged(ArraySet<ModeCallback> callbacks, int code,
private void notifyOpChanged(ArraySet<OnOpModeChangedListener> callbacks, int code,
int uid, String packageName) {
for (int i = 0; i < callbacks.size(); i++) {
final ModeCallback callback = callbacks.valueAt(i);
final OnOpModeChangedListener callback = callbacks.valueAt(i);
notifyOpChanged(callback, code, uid, packageName);
}
}
private void notifyOpChanged(ModeCallback callback, int code,
private void notifyOpChanged(OnOpModeChangedListener callback, int code,
int uid, String packageName) {
if (uid != UID_ANY && callback.mWatchingUid >= 0 && callback.mWatchingUid != uid) {
return;
}
// See CALL_BACK_ON_CHANGED_LISTENER_WITH_SWITCHED_OP_CHANGE
int[] switchedCodes;
if (callback.mWatchedOpCode == ALL_OPS) {
switchedCodes = mSwitchedOps.get(code);
} else if (callback.mWatchedOpCode == OP_NONE) {
switchedCodes = new int[]{code};
} else {
switchedCodes = new int[]{callback.mWatchedOpCode};
}
for (int switchedCode : switchedCodes) {
// There are features watching for mode changes such as window manager
// and location manager which are in our process. The callbacks in these
// features may require permissions our remote caller does not have.
final long identity = Binder.clearCallingIdentity();
try {
if (shouldIgnoreCallback(switchedCode, callback.mCallingPid,
callback.mCallingUid)) {
continue;
}
callback.mCallback.opChanged(switchedCode, uid, packageName);
} catch (RemoteException e) {
/* ignore */
} finally {
Binder.restoreCallingIdentity(identity);
}
}
mAppOpsServiceInterface.notifyOpChanged(callback, code, uid, packageName);
}
private static ArrayList<ChangeRec> addChange(ArrayList<ChangeRec> reports,
@@ -2936,9 +2808,10 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
return reports;
}
private static HashMap<ModeCallback, ArrayList<ChangeRec>> addCallbacks(
HashMap<ModeCallback, ArrayList<ChangeRec>> callbacks,
int op, int uid, String packageName, int previousMode, ArraySet<ModeCallback> cbs) {
private static HashMap<OnOpModeChangedListener, ArrayList<ChangeRec>> addCallbacks(
HashMap<OnOpModeChangedListener, ArrayList<ChangeRec>> callbacks,
int op, int uid, String packageName, int previousMode,
ArraySet<OnOpModeChangedListener> cbs) {
if (cbs == null) {
return callbacks;
}
@@ -2947,7 +2820,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
final int N = cbs.size();
for (int i=0; i<N; i++) {
ModeCallback cb = cbs.valueAt(i);
OnOpModeChangedListener cb = cbs.valueAt(i);
ArrayList<ChangeRec> reports = callbacks.get(cb);
ArrayList<ChangeRec> changed = addChange(reports, op, uid, packageName, previousMode);
if (changed != reports) {
@@ -2990,7 +2863,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
enforceManageAppOpsModes(callingPid, callingUid, reqUid);
HashMap<ModeCallback, ArrayList<ChangeRec>> callbacks = null;
HashMap<OnOpModeChangedListener, ArrayList<ChangeRec>> callbacks = null;
ArrayList<ChangeRec> allChanges = new ArrayList<>();
synchronized (this) {
boolean changed = false;
@@ -3007,9 +2880,11 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
uidState.setUidMode(code, AppOpsManager.opToDefaultMode(code));
for (String packageName : getPackagesForUid(uidState.uid)) {
callbacks = addCallbacks(callbacks, code, uidState.uid, packageName,
previousMode, mOpModeWatchers.get(code));
previousMode,
mAppOpsServiceInterface.getOpModeChangedListeners(code));
callbacks = addCallbacks(callbacks, code, uidState.uid, packageName,
previousMode, mPackageModeWatchers.get(packageName));
previousMode, mAppOpsServiceInterface
.getPackageModeChangedListeners(packageName));
allChanges = addChange(allChanges, code, uidState.uid,
packageName, previousMode);
@@ -3053,9 +2928,11 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
uidChanged = true;
final int uid = curOp.uidState.uid;
callbacks = addCallbacks(callbacks, curOp.op, uid, packageName,
previousMode, mOpModeWatchers.get(curOp.op));
previousMode,
mAppOpsServiceInterface.getOpModeChangedListeners(curOp.op));
callbacks = addCallbacks(callbacks, curOp.op, uid, packageName,
previousMode, mPackageModeWatchers.get(packageName));
previousMode, mAppOpsServiceInterface
.getPackageModeChangedListeners(packageName));
allChanges = addChange(allChanges, curOp.op, uid, packageName,
previousMode);
@@ -3075,7 +2952,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
mUidStates.remove(uidState.uid);
}
if (uidChanged) {
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
}
}
@@ -3084,8 +2961,9 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
}
if (callbacks != null) {
for (Map.Entry<ModeCallback, ArrayList<ChangeRec>> ent : callbacks.entrySet()) {
ModeCallback cb = ent.getKey();
for (Map.Entry<OnOpModeChangedListener, ArrayList<ChangeRec>> ent
: callbacks.entrySet()) {
OnOpModeChangedListener cb = ent.getKey();
ArrayList<ChangeRec> reports = ent.getValue();
for (int i=0; i<reports.size(); i++) {
ChangeRec rep = reports.get(i);
@@ -3121,7 +2999,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
for (int uidi = mUidStates.size() - 1; uidi >= 0; uidi--) {
final UidState uidState = mUidStates.valueAt(uidi);
if (uidState.foregroundOps != null) {
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
}
}
}
@@ -3169,20 +3047,10 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
mModeWatchers.put(callback.asBinder(), cb);
}
if (switchOp != AppOpsManager.OP_NONE) {
ArraySet<ModeCallback> cbs = mOpModeWatchers.get(switchOp);
if (cbs == null) {
cbs = new ArraySet<>();
mOpModeWatchers.put(switchOp, cbs);
}
cbs.add(cb);
mAppOpsServiceInterface.startWatchingOpModeChanged(cb, switchOp);
}
if (mayWatchPackageName) {
ArraySet<ModeCallback> cbs = mPackageModeWatchers.get(packageName);
if (cbs == null) {
cbs = new ArraySet<>();
mPackageModeWatchers.put(packageName, cbs);
}
cbs.add(cb);
mAppOpsServiceInterface.startWatchingPackageModeChanged(cb, packageName);
}
evalAllForegroundOpsLocked();
}
@@ -3197,21 +3065,9 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
ModeCallback cb = mModeWatchers.remove(callback.asBinder());
if (cb != null) {
cb.unlinkToDeath();
for (int i=mOpModeWatchers.size()-1; i>=0; i--) {
ArraySet<ModeCallback> cbs = mOpModeWatchers.valueAt(i);
cbs.remove(cb);
if (cbs.size() <= 0) {
mOpModeWatchers.removeAt(i);
}
}
for (int i=mPackageModeWatchers.size()-1; i>=0; i--) {
ArraySet<ModeCallback> cbs = mPackageModeWatchers.valueAt(i);
cbs.remove(cb);
if (cbs.size() <= 0) {
mPackageModeWatchers.removeAt(i);
}
}
mAppOpsServiceInterface.removeListener(cb);
}
evalAllForegroundOpsLocked();
}
}
@@ -4542,12 +4398,14 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
AppOpsService::notifyOpChangedForAllPkgsInUid,
this, code, uidState.uid, true, null));
} else if (uidState.pkgOps != null) {
final ArraySet<ModeCallback> callbacks = mOpModeWatchers.get(code);
if (callbacks != null) {
for (int cbi = callbacks.size() - 1; cbi >= 0; cbi--) {
final ModeCallback callback = callbacks.valueAt(cbi);
if ((callback.mFlags & AppOpsManager.WATCH_FOREGROUND_CHANGES) == 0
|| !callback.isWatchingUid(uidState.uid)) {
final ArraySet<OnOpModeChangedListener> listenerSet =
mAppOpsServiceInterface.getOpModeChangedListeners(code);
if (listenerSet != null) {
for (int cbi = listenerSet.size() - 1; cbi >= 0; cbi--) {
final OnOpModeChangedListener listener = listenerSet.valueAt(cbi);
if ((listener.getFlags()
& AppOpsManager.WATCH_FOREGROUND_CHANGES) == 0
|| !listener.isWatchingUid(uidState.uid)) {
continue;
}
for (int pkgi = uidState.pkgOps.size() - 1; pkgi >= 0; pkgi--) {
@@ -4558,7 +4416,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
if (op.getMode() == AppOpsManager.MODE_FOREGROUND) {
mHandler.sendMessage(PooledLambda.obtainMessage(
AppOpsService::notifyOpChanged,
this, callback, code, uidState.uid,
this, listenerSet.valueAt(cbi), code, uidState.uid,
uidState.pkgOps.keyAt(pkgi)));
}
}
@@ -5045,7 +4903,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
}
if (changed) {
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
}
}
}
@@ -5131,7 +4989,7 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
XmlUtils.skipCurrentTag(parser);
}
}
uidState.evalForegroundOps(mOpModeWatchers);
uidState.evalForegroundOps();
}
private void readAttributionOp(TypedXmlPullParser parser, @NonNull Op parent,
@@ -6122,62 +5980,17 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
pw.println();
}
if (mOpModeWatchers.size() > 0 && !dumpHistory) {
boolean printedHeader = false;
for (int i=0; i<mOpModeWatchers.size(); i++) {
if (dumpOp >= 0 && dumpOp != mOpModeWatchers.keyAt(i)) {
continue;
}
boolean printedOpHeader = false;
ArraySet<ModeCallback> callbacks = mOpModeWatchers.valueAt(i);
for (int j=0; j<callbacks.size(); j++) {
final ModeCallback cb = callbacks.valueAt(j);
if (dumpPackage != null
&& dumpUid != UserHandle.getAppId(cb.mWatchingUid)) {
continue;
}
needSep = true;
if (!printedHeader) {
pw.println(" Op mode watchers:");
printedHeader = true;
}
if (!printedOpHeader) {
pw.print(" Op ");
pw.print(AppOpsManager.opToName(mOpModeWatchers.keyAt(i)));
pw.println(":");
printedOpHeader = true;
}
pw.print(" #"); pw.print(j); pw.print(": ");
pw.println(cb);
}
}
}
if (mPackageModeWatchers.size() > 0 && dumpOp < 0 && !dumpHistory) {
boolean printedHeader = false;
for (int i=0; i<mPackageModeWatchers.size(); i++) {
if (dumpPackage != null && !dumpPackage.equals(mPackageModeWatchers.keyAt(i))) {
continue;
}
needSep = true;
if (!printedHeader) {
pw.println(" Package mode watchers:");
printedHeader = true;
}
pw.print(" Pkg "); pw.print(mPackageModeWatchers.keyAt(i));
pw.println(":");
ArraySet<ModeCallback> callbacks = mPackageModeWatchers.valueAt(i);
for (int j=0; j<callbacks.size(); j++) {
pw.print(" #"); pw.print(j); pw.print(": ");
pw.println(callbacks.valueAt(j));
}
}
if (!dumpHistory) {
needSep |= mAppOpsServiceInterface.dumpListeners(dumpOp, dumpUid, dumpPackage, pw);
}
if (mModeWatchers.size() > 0 && dumpOp < 0 && !dumpHistory) {
boolean printedHeader = false;
for (int i=0; i<mModeWatchers.size(); i++) {
for (int i = 0; i < mModeWatchers.size(); i++) {
final ModeCallback cb = mModeWatchers.valueAt(i);
if (dumpPackage != null
&& dumpUid != UserHandle.getAppId(cb.mWatchingUid)) {
&& dumpUid != UserHandle.getAppId(cb.getWatchingUid())) {
continue;
}
needSep = true;
@@ -6729,16 +6542,15 @@ public class AppOpsService extends IAppOpsService.Stub implements PersistenceSch
}
private void notifyWatchersOfChange(int code, int uid) {
final ArraySet<ModeCallback> clonedCallbacks;
final ArraySet<OnOpModeChangedListener> modeChangedListenerSet;
synchronized (this) {
ArraySet<ModeCallback> callbacks = mOpModeWatchers.get(code);
if (callbacks == null) {
modeChangedListenerSet = mAppOpsServiceInterface.getOpModeChangedListeners(code);
if (modeChangedListenerSet == null) {
return;
}
clonedCallbacks = new ArraySet<>(callbacks);
}
notifyOpChanged(clonedCallbacks, code, uid, null);
notifyOpChanged(modeChangedListenerSet, code, uid, null);
}
@Override

99
services/core/java/com/android/server/appop/AppOpsServiceInterface.java
View File

@@ -14,12 +14,20 @@
* limitations under the License.
*/
package com.android.server.appop;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.AppOpsManager.Mode;
import android.util.ArraySet;
import android.util.SparseBooleanArray;
import android.util.SparseIntArray;
import java.io.PrintWriter;
/**
* Interface for accessing and modifying modes for app-ops i.e. package and uid modes.
* In the future this interface will also include mode callbacks and op restrictions.
* This interface also includes functions for added and removing op mode watchers.
* In the future this interface will also include op restrictions.
*/
public interface AppOpsServiceInterface {
/**
@@ -95,4 +103,93 @@ public interface AppOpsServiceInterface {
* Stop tracking app-op modes for all uid and packages.
*/
void clearAllModes();
/**
* Registers changedListener to listen to op's mode change.
* @param changedListener the listener that must be trigger on the op's mode change.
* @param op op representing the app-op whose mode change needs to be listened to.
*/
void startWatchingOpModeChanged(@NonNull OnOpModeChangedListener changedListener, int op);
/**
* Registers changedListener to listen to package's app-op's mode change.
* @param changedListener the listener that must be trigger on the mode change.
* @param packageName of the package whose app-op's mode change needs to be listened to.
*/
void startWatchingPackageModeChanged(@NonNull OnOpModeChangedListener changedListener,
@NonNull String packageName);
/**
* Stop the changedListener from triggering on any mode change.
* @param changedListener the listener that needs to be removed.
*/
void removeListener(@NonNull OnOpModeChangedListener changedListener);
/**
* Temporary API which will be removed once we can safely untangle the methods that use this.
* Returns a set of OnOpModeChangedListener that are listening for op's mode changes.
* @param op app-op whose mode change is being listened to.
*/
ArraySet<OnOpModeChangedListener> getOpModeChangedListeners(int op);
/**
* Temporary API which will be removed once we can safely untangle the methods that use this.
* Returns a set of OnOpModeChangedListener that are listening for package's op's mode changes.
* @param packageName of package whose app-op's mode change is being listened to.
*/
ArraySet<OnOpModeChangedListener> getPackageModeChangedListeners(@NonNull String packageName);
/**
* Temporary API which will be removed once we can safely untangle the methods that use this.
* Notify that the app-op's mode is changed by triggering the change listener.
* @param changedListener the change listener.
* @param op App-op whose mode has changed
* @param uid user id associated with the app-op
* @param packageName package name that is associated with the app-op
*/
void notifyOpChanged(@NonNull OnOpModeChangedListener changedListener, int op, int uid,
@Nullable String packageName);
/**
* Temporary API which will be removed once we can safely untangle the methods that use this.
* Notify that the app-op's mode is changed to all packages associated with the uid by
* triggering the appropriate change listener.
* @param op App-op whose mode has changed
* @param uid user id associated with the app-op
* @param onlyForeground true if only watchers that
* @param callbackToIgnore callback that should be ignored.
*/
void notifyOpChangedForAllPkgsInUid(int op, int uid, boolean onlyForeground,
@Nullable OnOpModeChangedListener callbackToIgnore);
/**
* TODO: Move hasForegroundWatchers and foregroundOps into this.
* Go over the list of app-ops for the uid and mark app-ops with MODE_FOREGROUND in
* foregroundOps.
* @param uid for which the app-op's mode needs to be marked.
* @param foregroundOps boolean array where app-ops that have MODE_FOREGROUND are marked true.
* @return foregroundOps.
*/
SparseBooleanArray evalForegroundUidOps(int uid, SparseBooleanArray foregroundOps);
/**
* Go over the list of app-ops for the package name and mark app-ops with MODE_FOREGROUND in
* foregroundOps.
* @param packageName for which the app-op's mode needs to be marked.
* @param foregroundOps boolean array where app-ops that have MODE_FOREGROUND are marked true.
* @return foregroundOps.
*/
SparseBooleanArray evalForegroundPackageOps(String packageName,
SparseBooleanArray foregroundOps);
/**
* Dump op mode and package mode listeners and their details.
* @param dumpOp if -1 then op mode listeners for all app-ops are dumped. If it's set to an
* app-op, only the watchers for that app-op are dumped.
* @param dumpUid uid for which we want to dump op mode watchers.
* @param dumpPackage if not null and if dumpOp is -1, dumps watchers for the package name.
* @param printWriter writer to dump to.
*/
boolean dumpListeners(int dumpOp, int dumpUid, String dumpPackage, PrintWriter printWriter);
}

379
services/core/java/com/android/server/appop/LegacyAppOpsServiceInterfaceImpl.java
View File

@@ -16,15 +16,39 @@
package com.android.server.appop;
import static android.app.AppOpsManager.OP_NONE;
import static android.app.AppOpsManager.WATCH_FOREGROUND_CHANGES;
import static android.app.AppOpsManager.opRestrictsRead;
import static com.android.server.appop.AppOpsService.ModeCallback.ALL_OPS;
import android.Manifest;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.AppGlobals;
import android.app.AppOpsManager;
import android.app.AppOpsManager.Mode;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Binder;
import android.os.Handler;
import android.os.RemoteException;
import android.os.UserHandle;
import android.util.ArrayMap;
import android.util.ArraySet;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.util.SparseIntArray;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.function.pooled.PooledLambda;
import libcore.util.EmptyArray;
import java.io.PrintWriter;
import java.util.Collections;
import java.util.Objects;
/**
@@ -33,8 +57,13 @@ import com.android.internal.annotations.VisibleForTesting;
*/
public class LegacyAppOpsServiceInterfaceImpl implements AppOpsServiceInterface {
// Should be the same object that the AppOpsService is using for locking.
static final String TAG = "LegacyAppOpsServiceInterfaceImpl";
// Must be the same object that the AppOpsService is using for locking.
final Object mLock;
final Handler mHandler;
final Context mContext;
final SparseArray<int[]> mSwitchedOps;
@GuardedBy("mLock")
@VisibleForTesting
@@ -43,13 +72,25 @@ public class LegacyAppOpsServiceInterfaceImpl implements AppOpsServiceInterface
@GuardedBy("mLock")
final ArrayMap<String, SparseIntArray> mPackageModes = new ArrayMap<>();
final SparseArray<ArraySet<OnOpModeChangedListener>> mOpModeWatchers = new SparseArray<>();
final ArrayMap<String, ArraySet<OnOpModeChangedListener>> mPackageModeWatchers =
new ArrayMap<>();
final PersistenceScheduler mPersistenceScheduler;
// Constant meaning that any UID should be matched when dispatching callbacks
private static final int UID_ANY = -2;
LegacyAppOpsServiceInterfaceImpl(PersistenceScheduler persistenceScheduler,
@NonNull Object lock) {
@NonNull Object lock, Handler handler, Context context,
SparseArray<int[]> switchedOps) {
this.mPersistenceScheduler = persistenceScheduler;
this.mLock = lock;
this.mHandler = handler;
this.mContext = context;
this.mSwitchedOps = switchedOps;
}
@Override
@@ -158,7 +199,6 @@ public class LegacyAppOpsServiceInterfaceImpl implements AppOpsServiceInterface
}
}
@Override
public boolean areUidModesDefault(int uid) {
synchronized (mLock) {
@@ -195,4 +235,335 @@ public class LegacyAppOpsServiceInterfaceImpl implements AppOpsServiceInterface
}
}
}
@Override
public void startWatchingOpModeChanged(@NonNull OnOpModeChangedListener changedListener,
int op) {
Objects.requireNonNull(changedListener);
synchronized (mLock) {
ArraySet<OnOpModeChangedListener> modeWatcherSet = mOpModeWatchers.get(op);
if (modeWatcherSet == null) {
modeWatcherSet = new ArraySet<>();
mOpModeWatchers.put(op, modeWatcherSet);
}
modeWatcherSet.add(changedListener);
}
}
@Override
public void startWatchingPackageModeChanged(@NonNull OnOpModeChangedListener changedListener,
@NonNull String packageName) {
Objects.requireNonNull(changedListener);
Objects.requireNonNull(packageName);
synchronized (mLock) {
ArraySet<OnOpModeChangedListener> modeWatcherSet =
mPackageModeWatchers.get(packageName);
if (modeWatcherSet == null) {
modeWatcherSet = new ArraySet<>();
mPackageModeWatchers.put(packageName, modeWatcherSet);
}
modeWatcherSet.add(changedListener);
}
}
@Override
public void removeListener(@NonNull OnOpModeChangedListener changedListener) {
Objects.requireNonNull(changedListener);
synchronized (mLock) {
for (int i = mOpModeWatchers.size() - 1; i >= 0; i--) {
ArraySet<OnOpModeChangedListener> cbs = mOpModeWatchers.valueAt(i);
cbs.remove(changedListener);
if (cbs.size() <= 0) {
mOpModeWatchers.removeAt(i);
}
}
for (int i = mPackageModeWatchers.size() - 1; i >= 0; i--) {
ArraySet<OnOpModeChangedListener> cbs = mPackageModeWatchers.valueAt(i);
cbs.remove(changedListener);
if (cbs.size() <= 0) {
mPackageModeWatchers.removeAt(i);
}
}
}
}
@Override
public ArraySet<OnOpModeChangedListener> getOpModeChangedListeners(int op) {
synchronized (mLock) {
ArraySet<OnOpModeChangedListener> modeChangedListenersSet = mOpModeWatchers.get(op);
if (modeChangedListenersSet == null) {
return new ArraySet<>();
}
return new ArraySet<>(modeChangedListenersSet);
}
}
@Override
public ArraySet<OnOpModeChangedListener> getPackageModeChangedListeners(
@NonNull String packageName) {
Objects.requireNonNull(packageName);
synchronized (mLock) {
ArraySet<OnOpModeChangedListener> modeChangedListenersSet =
mPackageModeWatchers.get(packageName);
if (modeChangedListenersSet == null) {
return new ArraySet<>();
}
return new ArraySet<>(modeChangedListenersSet);
}
}
@Override
public void notifyOpChanged(@NonNull OnOpModeChangedListener onModeChangedListener, int code,
int uid, @Nullable String packageName) {
Objects.requireNonNull(onModeChangedListener);
if (uid != UID_ANY && onModeChangedListener.getWatchingUid() >= 0
&& onModeChangedListener.getWatchingUid() != uid) {
return;
}
// See CALL_BACK_ON_CHANGED_LISTENER_WITH_SWITCHED_OP_CHANGE
int[] switchedCodes;
if (onModeChangedListener.getWatchedOpCode() == ALL_OPS) {
switchedCodes = mSwitchedOps.get(code);
} else if (onModeChangedListener.getWatchedOpCode() == OP_NONE) {
switchedCodes = new int[]{code};
} else {
switchedCodes = new int[]{onModeChangedListener.getWatchedOpCode()};
}
for (int switchedCode : switchedCodes) {
// There are features watching for mode changes such as window manager
// and location manager which are in our process. The callbacks in these
// features may require permissions our remote caller does not have.
final long identity = Binder.clearCallingIdentity();
try {
if (shouldIgnoreCallback(switchedCode, onModeChangedListener.getCallingPid(),
onModeChangedListener.getCallingUid())) {
continue;
}
onModeChangedListener.onOpModeChanged(switchedCode, uid, packageName);
} catch (RemoteException e) {
/* ignore */
} finally {
Binder.restoreCallingIdentity(identity);
}
}
}
private boolean shouldIgnoreCallback(int op, int watcherPid, int watcherUid) {
// If it's a restricted read op, ignore it if watcher doesn't have manage ops permission,
// as watcher should not use this to signal if the value is changed.
return opRestrictsRead(op) && mContext.checkPermission(Manifest.permission.MANAGE_APPOPS,
watcherPid, watcherUid) != PackageManager.PERMISSION_GRANTED;
}
@Override
public void notifyOpChangedForAllPkgsInUid(int code, int uid, boolean onlyForeground,
@Nullable OnOpModeChangedListener callbackToIgnore) {
String[] uidPackageNames = getPackagesForUid(uid);
ArrayMap<OnOpModeChangedListener, ArraySet<String>> callbackSpecs = null;
synchronized (mLock) {
ArraySet<OnOpModeChangedListener> callbacks = mOpModeWatchers.get(code);
if (callbacks != null) {
final int callbackCount = callbacks.size();
for (int i = 0; i < callbackCount; i++) {
OnOpModeChangedListener callback = callbacks.valueAt(i);
if (onlyForeground && (callback.getFlags()
& WATCH_FOREGROUND_CHANGES) == 0) {
continue;
}
ArraySet<String> changedPackages = new ArraySet<>();
Collections.addAll(changedPackages, uidPackageNames);
if (callbackSpecs == null) {
callbackSpecs = new ArrayMap<>();
}
callbackSpecs.put(callback, changedPackages);
}
}
for (String uidPackageName : uidPackageNames) {
callbacks = mPackageModeWatchers.get(uidPackageName);
if (callbacks != null) {
if (callbackSpecs == null) {
callbackSpecs = new ArrayMap<>();
}
final int callbackCount = callbacks.size();
for (int i = 0; i < callbackCount; i++) {
OnOpModeChangedListener callback = callbacks.valueAt(i);
if (onlyForeground && (callback.getFlags()
& WATCH_FOREGROUND_CHANGES) == 0) {
continue;
}
ArraySet<String> changedPackages = callbackSpecs.get(callback);
if (changedPackages == null) {
changedPackages = new ArraySet<>();
callbackSpecs.put(callback, changedPackages);
}
changedPackages.add(uidPackageName);
}
}
}
if (callbackSpecs != null && callbackToIgnore != null) {
callbackSpecs.remove(callbackToIgnore);
}
}
if (callbackSpecs == null) {
return;
}
for (int i = 0; i < callbackSpecs.size(); i++) {
final OnOpModeChangedListener callback = callbackSpecs.keyAt(i);
final ArraySet<String> reportedPackageNames = callbackSpecs.valueAt(i);
if (reportedPackageNames == null) {
mHandler.sendMessage(PooledLambda.obtainMessage(
LegacyAppOpsServiceInterfaceImpl::notifyOpChanged,
this, callback, code, uid, (String) null));
} else {
final int reportedPackageCount = reportedPackageNames.size();
for (int j = 0; j < reportedPackageCount; j++) {
final String reportedPackageName = reportedPackageNames.valueAt(j);
mHandler.sendMessage(PooledLambda.obtainMessage(
LegacyAppOpsServiceInterfaceImpl::notifyOpChanged,
this, callback, code, uid, reportedPackageName));
}
}
}
}
private static String[] getPackagesForUid(int uid) {
String[] packageNames = null;
// Very early during boot the package manager is not yet or not yet fully started. At this
// time there are no packages yet.
if (AppGlobals.getPackageManager() != null) {
try {
packageNames = AppGlobals.getPackageManager().getPackagesForUid(uid);
} catch (RemoteException e) {
/* ignore - local call */
}
}
if (packageNames == null) {
return EmptyArray.STRING;
}
return packageNames;
}
@Override
public SparseBooleanArray evalForegroundUidOps(int uid, SparseBooleanArray foregroundOps) {
synchronized (mLock) {
return evalForegroundOps(mUidModes.get(uid), foregroundOps);
}
}
@Override
public SparseBooleanArray evalForegroundPackageOps(String packageName,
SparseBooleanArray foregroundOps) {
synchronized (mLock) {
return evalForegroundOps(mPackageModes.get(packageName), foregroundOps);
}
}
private SparseBooleanArray evalForegroundOps(SparseIntArray opModes,
SparseBooleanArray foregroundOps) {
SparseBooleanArray tempForegroundOps = foregroundOps;
if (opModes != null) {
for (int i = opModes.size() - 1; i >= 0; i--) {
if (opModes.valueAt(i) == AppOpsManager.MODE_FOREGROUND) {
if (tempForegroundOps == null) {
tempForegroundOps = new SparseBooleanArray();
}
evalForegroundWatchers(opModes.keyAt(i), tempForegroundOps);
}
}
}
return tempForegroundOps;
}
private void evalForegroundWatchers(int op, SparseBooleanArray foregroundOps) {
boolean curValue = foregroundOps.get(op, false);
ArraySet<OnOpModeChangedListener> listenerSet = mOpModeWatchers.get(op);
if (listenerSet != null) {
for (int cbi = listenerSet.size() - 1; !curValue && cbi >= 0; cbi--) {
if ((listenerSet.valueAt(cbi).getFlags()
& AppOpsManager.WATCH_FOREGROUND_CHANGES) != 0) {
curValue = true;
}
}
}
foregroundOps.put(op, curValue);
}
@Override
public boolean dumpListeners(int dumpOp, int dumpUid, String dumpPackage,
PrintWriter printWriter) {
boolean needSep = false;
if (mOpModeWatchers.size() > 0) {
boolean printedHeader = false;
for (int i = 0; i < mOpModeWatchers.size(); i++) {
if (dumpOp >= 0 && dumpOp != mOpModeWatchers.keyAt(i)) {
continue;
}
boolean printedOpHeader = false;
ArraySet<OnOpModeChangedListener> modeChangedListenerSet =
mOpModeWatchers.valueAt(i);
for (int j = 0; j < modeChangedListenerSet.size(); j++) {
final OnOpModeChangedListener listener = modeChangedListenerSet.valueAt(j);
if (dumpPackage != null
&& dumpUid != UserHandle.getAppId(listener.getWatchingUid())) {
continue;
}
needSep = true;
if (!printedHeader) {
printWriter.println(" Op mode watchers:");
printedHeader = true;
}
if (!printedOpHeader) {
printWriter.print(" Op ");
printWriter.print(AppOpsManager.opToName(mOpModeWatchers.keyAt(i)));
printWriter.println(":");
printedOpHeader = true;
}
printWriter.print(" #"); printWriter.print(j); printWriter.print(": ");
printWriter.println(listener.toString());
}
}
}
if (mPackageModeWatchers.size() > 0 && dumpOp < 0) {
boolean printedHeader = false;
for (int i = 0; i < mPackageModeWatchers.size(); i++) {
if (dumpPackage != null
&& !dumpPackage.equals(mPackageModeWatchers.keyAt(i))) {
continue;
}
needSep = true;
if (!printedHeader) {
printWriter.println(" Package mode watchers:");
printedHeader = true;
}
printWriter.print(" Pkg "); printWriter.print(mPackageModeWatchers.keyAt(i));
printWriter.println(":");
ArraySet<OnOpModeChangedListener> modeChangedListenerSet =
mPackageModeWatchers.valueAt(i);
for (int j = 0; j < modeChangedListenerSet.size(); j++) {
printWriter.print(" #"); printWriter.print(j); printWriter.print(": ");
printWriter.println(modeChangedListenerSet.valueAt(j).toString());
}
}
}
return needSep;
}
}

102
services/core/java/com/android/server/appop/OnOpModeChangedListener.java Normal file
View File

@@ -0,0 +1,102 @@
/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.appop;
import android.os.RemoteException;
/**
* Listener for mode changes, encapsulates methods that should be triggered in the event of a mode
* change.
*/
abstract class OnOpModeChangedListener {
// Constant meaning that any UID should be matched when dispatching callbacks
private static final int UID_ANY = -2;
private int mWatchingUid;
private int mFlags;
private int mWatchedOpCode;
private int mCallingUid;
private int mCallingPid;
OnOpModeChangedListener(int watchingUid, int flags, int watchedOpCode, int callingUid,
int callingPid) {
this.mWatchingUid = watchingUid;
this.mFlags = flags;
this.mWatchedOpCode = watchedOpCode;
this.mCallingUid = callingUid;
this.mCallingPid = callingPid;
}
/**
* Returns the user id that is watching for the mode change.
*/
public int getWatchingUid() {
return mWatchingUid;
}
/**
* Returns the flags associated with the mode change listener.
*/
public int getFlags() {
return mFlags;
}
/**
* Get the app-op whose mode change should trigger the callback.
*/
public int getWatchedOpCode() {
return mWatchedOpCode;
}
/**
* Get the user-id that triggered the app-op mode change to be watched.
*/
public int getCallingUid() {
return mCallingUid;
}
/**
* Get the process-id that triggered the app-op mode change to be watched.
*/
public int getCallingPid() {
return mCallingPid;
}
/**
* returns true if the user id passed in the param is the one that is watching for op mode
* changed.
*/
public boolean isWatchingUid(int uid) {
return uid == UID_ANY || mWatchingUid < 0 || mWatchingUid == uid;
}
/**
* Method that should be triggered when the app-op's mode is changed.
* @param op app-op whose mode-change is being listened to.
* @param uid user-is associated with the app-op.
* @param packageName package name associated with the app-op.
*/
public abstract void onOpModeChanged(int op, int uid, String packageName)
throws RemoteException;
/**
* Return human readable string representing the listener.
*/
public abstract String toString();
}