Add system API to watch for permission changes
Change-Id: I1ce450a59fb326c14848f46732d877dea33f33c7
diff --git a/Android.mk b/Android.mk
index 1752caf..e96a932 100644
--- a/Android.mk
+++ b/Android.mk
@@ -142,6 +142,7 @@
core/java/android/content/pm/IPackageManager.aidl \
core/java/android/content/pm/IPackageMoveObserver.aidl \
core/java/android/content/pm/IPackageStatsObserver.aidl \
+ core/java/android/content/pm/IOnPermissionsChangeListener.aidl \
core/java/android/database/IContentObserver.aidl \
core/java/android/hardware/ICameraService.aidl \
core/java/android/hardware/ICameraServiceListener.aidl \
diff --git a/api/system-current.txt b/api/system-current.txt
index e4e8387..2880d13 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -9516,6 +9516,7 @@
public abstract class PackageManager {
ctor public PackageManager();
+ method public abstract void addOnPermissionsChangeListener(android.content.pm.PackageManager.OnPermissionsChangedListener);
method public abstract deprecated void addPackageToPreferred(java.lang.String);
method public abstract boolean addPermission(android.content.pm.PermissionInfo);
method public abstract boolean addPermissionAsync(android.content.pm.PermissionInfo);
@@ -9589,6 +9590,7 @@
method public abstract java.util.List<android.content.pm.ResolveInfo> queryIntentContentProviders(android.content.Intent, int);
method public abstract java.util.List<android.content.pm.ResolveInfo> queryIntentServices(android.content.Intent, int);
method public abstract java.util.List<android.content.pm.PermissionInfo> queryPermissionsByGroup(java.lang.String, int) throws android.content.pm.PackageManager.NameNotFoundException;
+ method public abstract void removeOnPermissionsChangeListener(android.content.pm.PackageManager.OnPermissionsChangedListener);
method public abstract deprecated void removePackageFromPreferred(java.lang.String);
method public abstract void removePermission(java.lang.String);
method public abstract android.content.pm.ResolveInfo resolveActivity(android.content.Intent, int);
@@ -9764,6 +9766,10 @@
ctor public PackageManager.NameNotFoundException(java.lang.String);
}
+ public static abstract interface PackageManager.OnPermissionsChangedListener {
+ method public abstract void onPermissionsChanged(int);
+ }
+
public static abstract class PackageManager.PermissionFlags implements java.lang.annotation.Annotation {
}
@@ -34145,6 +34151,7 @@
public class MockPackageManager extends android.content.pm.PackageManager {
ctor public MockPackageManager();
+ method public void addOnPermissionsChangeListener(android.content.pm.PackageManager.OnPermissionsChangedListener);
method public void addPackageToPreferred(java.lang.String);
method public boolean addPermission(android.content.pm.PermissionInfo);
method public boolean addPermissionAsync(android.content.pm.PermissionInfo);
@@ -34219,6 +34226,7 @@
method public java.util.List<android.content.pm.ResolveInfo> queryIntentContentProviders(android.content.Intent, int);
method public java.util.List<android.content.pm.ResolveInfo> queryIntentServices(android.content.Intent, int);
method public java.util.List<android.content.pm.PermissionInfo> queryPermissionsByGroup(java.lang.String, int) throws android.content.pm.PackageManager.NameNotFoundException;
+ method public void removeOnPermissionsChangeListener(android.content.pm.PackageManager.OnPermissionsChangedListener);
method public void removePackageFromPreferred(java.lang.String);
method public void removePermission(java.lang.String);
method public android.content.pm.ResolveInfo resolveActivity(android.content.Intent, int);
diff --git a/core/java/android/app/ApplicationPackageManager.java b/core/java/android/app/ApplicationPackageManager.java
index 41e3db8..cb1e7aa 100644
--- a/core/java/android/app/ApplicationPackageManager.java
+++ b/core/java/android/app/ApplicationPackageManager.java
@@ -31,6 +31,7 @@
import android.content.pm.ComponentInfo;
import android.content.pm.ContainerEncryptionParams;
import android.content.pm.FeatureInfo;
+import android.content.pm.IOnPermissionsChangeListener;
import android.content.pm.IPackageDataObserver;
import android.content.pm.IPackageDeleteObserver;
import android.content.pm.IPackageInstallObserver;
@@ -88,6 +89,7 @@
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
+import java.util.Map;
import java.util.Objects;
/*package*/
@@ -1048,6 +1050,38 @@
}
}
+ @Override
+ public void addOnPermissionsChangeListener(OnPermissionsChangedListener listener) {
+ synchronized (mPermissionListeners) {
+ if (mPermissionListeners.get(listener) != null) {
+ return;
+ }
+ OnPermissionsChangeListenerDelegate delegate =
+ new OnPermissionsChangeListenerDelegate(listener, Looper.getMainLooper());
+ try {
+ mPM.addOnPermissionsChangeListener(delegate);
+ mPermissionListeners.put(listener, delegate);
+ } catch (RemoteException e) {
+ throw new RuntimeException("Package manager has died", e);
+ }
+ }
+ }
+
+ @Override
+ public void removeOnPermissionsChangeListener(OnPermissionsChangedListener listener) {
+ synchronized (mPermissionListeners) {
+ IOnPermissionsChangeListener delegate = mPermissionListeners.get(listener);
+ if (delegate != null) {
+ try {
+ mPM.removeOnPermissionsChangeListener(delegate);
+ mPermissionListeners.remove(listener);
+ } catch (RemoteException e) {
+ throw new RuntimeException("Package manager has died", e);
+ }
+ }
+ }
+ }
+
static void configurationChanged() {
synchronized (sSync) {
sIconCache.clear();
@@ -2139,4 +2173,39 @@
= new ArrayMap<ResourceName, WeakReference<Drawable.ConstantState>>();
private static ArrayMap<ResourceName, WeakReference<CharSequence>> sStringCache
= new ArrayMap<ResourceName, WeakReference<CharSequence>>();
+
+ private final Map<OnPermissionsChangedListener, IOnPermissionsChangeListener>
+ mPermissionListeners = new ArrayMap<>();
+
+ public class OnPermissionsChangeListenerDelegate extends IOnPermissionsChangeListener.Stub
+ implements Handler.Callback{
+ private static final int MSG_PERMISSIONS_CHANGED = 1;
+
+ private final OnPermissionsChangedListener mListener;
+ private final Handler mHandler;
+
+
+ public OnPermissionsChangeListenerDelegate(OnPermissionsChangedListener listener,
+ Looper looper) {
+ mListener = listener;
+ mHandler = new Handler(looper, this);
+ }
+
+ @Override
+ public void onPermissionsChanged(int uid) {
+ mHandler.obtainMessage(MSG_PERMISSIONS_CHANGED, uid, 0).sendToTarget();
+ }
+
+ @Override
+ public boolean handleMessage(Message msg) {
+ switch (msg.what) {
+ case MSG_PERMISSIONS_CHANGED: {
+ final int uid = msg.arg1;
+ mListener.onPermissionsChanged(uid);
+ return true;
+ }
+ }
+ return false;
+ }
+ }
}
diff --git a/core/java/android/content/pm/IOnPermissionsChangeListener.aidl b/core/java/android/content/pm/IOnPermissionsChangeListener.aidl
new file mode 100644
index 0000000..7791b50
--- /dev/null
+++ b/core/java/android/content/pm/IOnPermissionsChangeListener.aidl
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2015 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 android.content.pm;
+
+/**
+ * Listener for changes in the permissions for installed packages.
+ * {@hide}
+ */
+oneway interface IOnPermissionsChangeListener {
+ void onPermissionsChanged(int uid);
+}
diff --git a/core/java/android/content/pm/IPackageManager.aidl b/core/java/android/content/pm/IPackageManager.aidl
index 00b8c71..0c07bc3 100644
--- a/core/java/android/content/pm/IPackageManager.aidl
+++ b/core/java/android/content/pm/IPackageManager.aidl
@@ -31,6 +31,7 @@
import android.content.pm.IPackageDataObserver;
import android.content.pm.IPackageMoveObserver;
import android.content.pm.IPackageStatsObserver;
+import android.content.pm.IOnPermissionsChangeListener;
import android.content.pm.IntentFilterVerificationInfo;
import android.content.pm.InstrumentationInfo;
import android.content.pm.KeySet;
@@ -490,4 +491,7 @@
KeySet getSigningKeySet(String packageName);
boolean isPackageSignedByKeySet(String packageName, in KeySet ks);
boolean isPackageSignedByKeySetExactly(String packageName, in KeySet ks);
+
+ void addOnPermissionsChangeListener(in IOnPermissionsChangeListener listener);
+ void removeOnPermissionsChangeListener(in IOnPermissionsChangeListener listener);
}
diff --git a/core/java/android/content/pm/PackageManager.java b/core/java/android/content/pm/PackageManager.java
index c016ac3..c816971 100644
--- a/core/java/android/content/pm/PackageManager.java
+++ b/core/java/android/content/pm/PackageManager.java
@@ -16,11 +16,13 @@
package android.content.pm;
+import android.Manifest;
import android.annotation.CheckResult;
import android.annotation.DrawableRes;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
+import android.annotation.RequiresPermission;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.StringRes;
@@ -78,6 +80,21 @@
}
/**
+ * Listener for changes in permissions granted to a UID.
+ *
+ * @hide
+ */
+ @SystemApi
+ public interface OnPermissionsChangedListener {
+
+ /**
+ * Called when the permissions for a UID change.
+ * @param uid The UID with a change.
+ */
+ public void onPermissionsChanged(int uid);
+ }
+
+ /**
* {@link PackageInfo} flag: return information about
* activities in the package in {@link PackageInfo#activities}.
*/
@@ -4292,6 +4309,27 @@
public abstract boolean isSafeMode();
/**
+ * Adds a listener for permission changes for installed packages.
+ *
+ * @param listener The listener to add.
+ *
+ * @hide
+ */
+ @SystemApi
+ @RequiresPermission(Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS)
+ public abstract void addOnPermissionsChangeListener(OnPermissionsChangedListener listener);
+
+ /**
+ * Remvoes a listener for permission changes for installed packages.
+ *
+ * @param listener The listener to remove.
+ *
+ * @hide
+ */
+ @SystemApi
+ public abstract void removeOnPermissionsChangeListener(OnPermissionsChangedListener listener);
+
+ /**
* Return the {@link KeySet} associated with the String alias for this
* application.
*
diff --git a/core/java/android/os/RemoteCallbackList.java b/core/java/android/os/RemoteCallbackList.java
index d2a9cdc..5849350 100644
--- a/core/java/android/os/RemoteCallbackList.java
+++ b/core/java/android/os/RemoteCallbackList.java
@@ -77,7 +77,6 @@
public boolean register(E callback) {
return register(callback, null);
}
-
/**
* Add a new callback to the list. This callback will remain in the list
* until a corresponding call to {@link #unregister} or its hosting process
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 709de9e..0911d42 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1979,6 +1979,10 @@
<permission android:name="android.permission.GRANT_REVOKE_PERMISSIONS"
android:protectionLevel="signature" />
+ <!-- @hide Allows an application to observe permission changes. -->
+ <permission android:name="android.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS"
+ android:protectionLevel="signatureOrSystem" />
+
<!-- Allows an application to use SurfaceFlinger's low level features.
<p>Not for use by third-party applications. -->
<permission android:name="android.permission.ACCESS_SURFACE_FLINGER"
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 604ac97..9705df3 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -92,6 +92,7 @@
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.FeatureInfo;
+import android.content.pm.IOnPermissionsChangeListener;
import android.content.pm.IPackageDataObserver;
import android.content.pm.IPackageDeleteObserver;
import android.content.pm.IPackageDeleteObserver2;
@@ -144,6 +145,7 @@
import android.os.Parcel;
import android.os.ParcelFileDescriptor;
import android.os.Process;
+import android.os.RemoteCallback;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.SELinux;
@@ -522,6 +524,8 @@
private AtomicInteger mNextMoveId = new AtomicInteger();
private final MoveCallbacks mMoveCallbacks;
+ private final OnPermissionChangeListeners mOnPermissionChangeListeners;
+
// Cache of users who need badging.
SparseBooleanArray mUserNeedsBadging = new SparseBooleanArray();
@@ -1729,6 +1733,9 @@
mPackageDexOptimizer = new PackageDexOptimizer(this);
mMoveCallbacks = new MoveCallbacks(FgThread.get().getLooper());
+ mOnPermissionChangeListeners = new OnPermissionChangeListeners(
+ FgThread.get().getLooper());
+
getDefaultDisplayMetrics(context, mMetrics);
SystemConfig systemConfig = SystemConfig.getInstance();
@@ -3198,10 +3205,11 @@
case PermissionsState.PERMISSION_OPERATION_SUCCESS_GIDS_CHANGED: {
gidsChanged = true;
- }
- break;
+ } break;
}
+ mOnPermissionChangeListeners.onPermissionsChanged(pkg.applicationInfo.uid);
+
// Not critical if that is lost - app has to request again.
mSettings.writeRuntimePermissionsForUserLPr(userId, false);
}
@@ -3258,6 +3266,8 @@
return;
}
+ mOnPermissionChangeListeners.onPermissionsChanged(pkg.applicationInfo.uid);
+
// Critical, after this call app should never have the permission.
mSettings.writeRuntimePermissionsForUserLPr(userId, true);
}
@@ -3400,6 +3410,24 @@
}
@Override
+ public void addOnPermissionsChangeListener(IOnPermissionsChangeListener listener) {
+ mContext.enforceCallingOrSelfPermission(
+ Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS,
+ "addOnPermissionsChangeListener");
+
+ synchronized (mPackages) {
+ mOnPermissionChangeListeners.addListenerLocked(listener);
+ }
+ }
+
+ @Override
+ public void removeOnPermissionsChangeListener(IOnPermissionsChangeListener listener) {
+ synchronized (mPackages) {
+ mOnPermissionChangeListeners.removeListenerLocked(listener);
+ }
+ }
+
+ @Override
public boolean isProtectedBroadcast(String actionName) {
synchronized (mPackages) {
return mProtectedBroadcasts.contains(actionName);
@@ -15255,4 +15283,57 @@
}
}
}
+
+ private final class OnPermissionChangeListeners extends Handler {
+ private static final int MSG_ON_PERMISSIONS_CHANGED = 1;
+
+ private final RemoteCallbackList<IOnPermissionsChangeListener> mPermissionListeners =
+ new RemoteCallbackList<>();
+
+ public OnPermissionChangeListeners(Looper looper) {
+ super(looper);
+ }
+
+ @Override
+ public void handleMessage(Message msg) {
+ switch (msg.what) {
+ case MSG_ON_PERMISSIONS_CHANGED: {
+ final int uid = msg.arg1;
+ handleOnPermissionsChanged(uid);
+ } break;
+ }
+ }
+
+ public void addListenerLocked(IOnPermissionsChangeListener listener) {
+ mPermissionListeners.register(listener);
+
+ }
+
+ public void removeListenerLocked(IOnPermissionsChangeListener listener) {
+ mPermissionListeners.unregister(listener);
+ }
+
+ public void onPermissionsChanged(int uid) {
+ if (mPermissionListeners.getRegisteredCallbackCount() > 0) {
+ obtainMessage(MSG_ON_PERMISSIONS_CHANGED, uid, 0).sendToTarget();
+ }
+ }
+
+ private void handleOnPermissionsChanged(int uid) {
+ final int count = mPermissionListeners.beginBroadcast();
+ try {
+ for (int i = 0; i < count; i++) {
+ IOnPermissionsChangeListener callback = mPermissionListeners
+ .getBroadcastItem(i);
+ try {
+ callback.onPermissionsChanged(uid);
+ } catch (RemoteException e) {
+ Log.e(TAG, "Permission listener is dead", e);
+ }
+ }
+ } finally {
+ mPermissionListeners.finishBroadcast();
+ }
+ }
+ }
}
diff --git a/test-runner/src/android/test/mock/MockPackageManager.java b/test-runner/src/android/test/mock/MockPackageManager.java
index 3b7aa9f..ac92dc0 100644
--- a/test-runner/src/android/test/mock/MockPackageManager.java
+++ b/test-runner/src/android/test/mock/MockPackageManager.java
@@ -224,6 +224,18 @@
throw new UnsupportedOperationException();
}
+ /** @hide */
+ @Override
+ public void addOnPermissionsChangeListener(OnPermissionsChangedListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
+ /** @hide */
+ @Override
+ public void removeOnPermissionsChangeListener(OnPermissionsChangedListener listener) {
+ throw new UnsupportedOperationException();
+ }
+
@Override
public int checkSignatures(String pkg1, String pkg2) {
throw new UnsupportedOperationException();