Allow querying the intent-filters receivers were registered for.

Bug: 371313878
Test: atest tests/app/BroadcastsTest/src/android/app/cts/broadcasts/BroadcastReceiverRegistrationTest.java
Flag: EXEMPT testapi
Change-Id: I52a5a4af077a4a1cbf6c604e5a2f92666b41bc77

9 files changed, 86 insertions, 0 deletions

diff --git a/core/api/test-current.txt b/core/api/test-current.txt
index a0c4fdb90bf1..11ca1b972689 100644
--- a/core/api/test-current.txt
+++ b/core/api/test-current.txt
@@ -1029,6 +1029,7 @@ package android.content {
   public abstract class Context {
     method @NonNull public java.io.File getCrateDir(@NonNull String);
     method public abstract int getDisplayId();
+    method @NonNull public java.util.List<android.content.IntentFilter> getRegisteredIntentFilters(@NonNull android.content.BroadcastReceiver);
     method @NonNull public android.os.UserHandle getUser();
     method public int getUserId();
     method public void setAutofillOptions(@Nullable android.content.AutofillOptions);
diff --git a/core/java/android/app/ContextImpl.java b/core/java/android/app/ContextImpl.java
index ecef0db46bb2..2cf718ef364f 100644
--- a/core/java/android/app/ContextImpl.java
+++ b/core/java/android/app/ContextImpl.java
@@ -1962,6 +1962,24 @@ class ContextImpl extends Context {
         }
     }
 
+    @Override
+    @NonNull
+    public List<IntentFilter> getRegisteredIntentFilters(@NonNull BroadcastReceiver receiver) {
+        if (mPackageInfo != null) {
+            IIntentReceiver rd = mPackageInfo.findRegisteredReceiverDispatcher(
+                    receiver, getOuterContext());
+            try {
+                final List<IntentFilter> filters = ActivityManager.getService()
+                        .getRegisteredIntentFilters(rd);
+                return filters == null ? new ArrayList<>() : filters;
+            } catch (RemoteException e) {
+                throw e.rethrowFromSystemServer();
+            }
+        } else {
+            throw new RuntimeException("Not supported in system context");
+        }
+    }
+
     private void validateServiceIntent(Intent service) {
         if (service.getComponent() == null && service.getPackage() == null) {
             if (getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP) {
diff --git a/core/java/android/app/IActivityManager.aidl b/core/java/android/app/IActivityManager.aidl
index f880901429f7..34a3ad19b270 100644
--- a/core/java/android/app/IActivityManager.aidl
+++ b/core/java/android/app/IActivityManager.aidl
@@ -181,6 +181,7 @@ interface IActivityManager {
             in IntentFilter filter, in String requiredPermission, int userId, int flags);
     @UnsupportedAppUsage
     void unregisterReceiver(in IIntentReceiver receiver);
+    List<IntentFilter> getRegisteredIntentFilters(in IIntentReceiver receiver);
     /** @deprecated Use {@link #broadcastIntentWithFeature} instead */
     @UnsupportedAppUsage(maxTargetSdk=29, publicAlternatives="Use {@link android.content.Context#sendBroadcast(android.content.Intent)} instead")
     int broadcastIntent(in IApplicationThread caller, in Intent intent,
diff --git a/core/java/android/app/LoadedApk.java b/core/java/android/app/LoadedApk.java
index 1e45d6fd1674..b8233bc498b8 100644
--- a/core/java/android/app/LoadedApk.java
+++ b/core/java/android/app/LoadedApk.java
@@ -1627,6 +1627,18 @@ public final class LoadedApk {
         }
     }
 
+    IIntentReceiver findRegisteredReceiverDispatcher(BroadcastReceiver r, Context context) {
+        synchronized (mReceivers) {
+            final ArrayMap<BroadcastReceiver, LoadedApk.ReceiverDispatcher> map =
+                    mReceivers.get(context);
+            if (map != null) {
+                final LoadedApk.ReceiverDispatcher rd = map.get(r);
+                return rd == null ? null : rd.getIIntentReceiver();
+            }
+            return null;
+        }
+    }
+
     public IIntentReceiver forgetReceiverDispatcher(Context context,
             BroadcastReceiver r) {
         synchronized (mReceivers) {
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 07106e8359d4..bce88bba3e15 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -3658,6 +3658,27 @@ public abstract class Context {
     public abstract void unregisterReceiver(BroadcastReceiver receiver);
 
     /**
+     * Returns the list of {@link IntentFilter} objects that have been registered for the given
+     * {@link BroadcastReceiver}.
+     *
+     * @param receiver The {@link BroadcastReceiver} whose registered intent filters
+     *                 should be retrieved.
+     *
+     * @return A list of registered intent filters, or an empty list if the given receiver is not
+     *         registered.
+     *
+     * @throws NullPointerException if the {@code receiver} is {@code null}.
+     *
+     * @hide
+     */
+    @SuppressLint("UnflaggedApi") // TestApi
+    @TestApi
+    @NonNull
+    public List<IntentFilter> getRegisteredIntentFilters(@NonNull BroadcastReceiver receiver) {
+        throw new RuntimeException("Not implemented. Must override in a subclass.");
+    }
+
+    /**
      * Request that a given application service be started.  The Intent
      * should either contain the complete class name of a specific service
      * implementation to start, or a specific package name to target.  If the
diff --git a/core/java/android/content/ContextWrapper.java b/core/java/android/content/ContextWrapper.java
index 79fa6ea4d157..23d17cb5ce50 100644
--- a/core/java/android/content/ContextWrapper.java
+++ b/core/java/android/content/ContextWrapper.java
@@ -843,6 +843,13 @@ public class ContextWrapper extends Context {
         mBase.unregisterReceiver(receiver);
     }
 
+    /** @hide */
+    @Override
+    @NonNull
+    public List<IntentFilter> getRegisteredIntentFilters(@NonNull BroadcastReceiver receiver) {
+        return mBase.getRegisteredIntentFilters(receiver);
+    }
+
     @Override
     public @Nullable ComponentName startService(Intent service) {
         return mBase.startService(service);
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 2a9cb435e01d..5494463ee1f2 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -14301,6 +14301,10 @@ public class ActivityManagerService extends IActivityManager.Stub
         mBroadcastController.unregisterReceiver(receiver);
     }
 
+    public List<IntentFilter> getRegisteredIntentFilters(IIntentReceiver receiver) {
+        return mBroadcastController.getRegisteredIntentFilters(receiver);
+    }
+
     @GuardedBy("this")
     final int broadcastIntentLocked(ProcessRecord callerApp,
             String callerPackage, String callerFeatureId, Intent intent, String resolvedType,
diff --git a/services/core/java/com/android/server/am/BroadcastController.java b/services/core/java/com/android/server/am/BroadcastController.java
index 71ddf05eb692..b0f880710eb6 100644
--- a/services/core/java/com/android/server/am/BroadcastController.java
+++ b/services/core/java/com/android/server/am/BroadcastController.java
@@ -679,6 +679,21 @@ class BroadcastController {
         }
     }
 
+    List<IntentFilter> getRegisteredIntentFilters(IIntentReceiver receiver) {
+        synchronized (mService) {
+            final ReceiverList rl = mRegisteredReceivers.get(receiver.asBinder());
+            if (rl == null) {
+                return null;
+            }
+            final ArrayList<IntentFilter> filters = new ArrayList<>();
+            final int count = rl.size();
+            for (int i = 0; i < count; ++i) {
+                filters.add(rl.get(i));
+            }
+            return filters;
+        }
+    }
+
     int broadcastIntentWithFeature(IApplicationThread caller, String callingFeatureId,
             Intent intent, String resolvedType, IIntentReceiver resultTo,
             int resultCode, String resultData, Bundle resultExtras,
diff --git a/test-mock/src/android/test/mock/MockContext.java b/test-mock/src/android/test/mock/MockContext.java
index 6bf7ff501217..3247d1fe5222 100644
--- a/test-mock/src/android/test/mock/MockContext.java
+++ b/test-mock/src/android/test/mock/MockContext.java
@@ -53,6 +53,7 @@ import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.List;
 import java.util.concurrent.Executor;
 
 /**
@@ -607,6 +608,12 @@ public class MockContext extends Context {
         throw new UnsupportedOperationException();
     }
 
+    /** @hide */
+    @Override
+    public List<IntentFilter> getRegisteredIntentFilters(BroadcastReceiver receiver) {
+        throw new UnsupportedOperationException();
+    }
+
     @Override
     public ComponentName startService(Intent service) {
         throw new UnsupportedOperationException();