Add API to send background intent

Test: manual
Bug: 144108192
Change-Id: I93c49d377921830a2ae83217a3fbef5026982319

1 files changed, 96 insertions, 0 deletions

diff --git a/core/java/android/telephony/CellBroadcastIntents.java b/core/java/android/telephony/CellBroadcastIntents.java
new file mode 100644
index 000000000000..4474f3ecc620
--- /dev/null
+++ b/core/java/android/telephony/CellBroadcastIntents.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2019 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.telephony;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.SystemApi;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.util.Log;
+
+/**
+ * A static helper class used to send Intents with prepopulated flags.
+ * <p>
+ * This is intended to be used by the CellBroadcastService and will throw a security exception if
+ * used from a UID besides the network stack UID.
+ *
+ * @hide
+ */
+@SystemApi
+public class CellBroadcastIntents {
+    private static final String LOG_TAG = "CellBroadcastIntents";
+
+    /**
+     * @hide
+     */
+    private CellBroadcastIntents() {
+    }
+
+    /**
+     * Returns an intent which can be received by background BroadcastReceivers. This is only
+     * intended to be used by the CellBroadcastService and will throw a security exception if called
+     * from another UID.
+     *
+     * @param context            The context from which to send the broadcast
+     * @param user               The user from which to send the broadcast
+     * @param intent             The Intent to broadcast; all receivers matching this Intent will
+     *                           receive the broadcast.
+     * @param receiverPermission String naming a permissions that a receiver must hold in order to
+     *                           receive your broadcast. If null, no permission is required.
+     * @param receiverAppOp      The app op associated with the broadcast. If null, no appOp is
+     *                           required. If both receiverAppOp and receiverPermission are
+     *                           non-null, a receiver must have both of them to receive the
+     *                           broadcast
+     * @param resultReceiver     Your own BroadcastReceiver to treat as the final receiver of the
+     *                           broadcast.
+     * @param scheduler          A custom Handler with which to schedule the resultReceiver
+     *                           callback; if null it will be scheduled in the Context's main
+     *                           thread.
+     * @param initialCode        An initial value for the result code.  Often Activity.RESULT_OK.
+     * @param initialData        An initial value for the result data.  Often null.
+     * @param initialExtras      An initial value for the result extras.  Often null.
+     */
+    public static void sendOrderedBroadcastForBackgroundReceivers(@NonNull Context context,
+            @Nullable UserHandle user, @NonNull Intent intent, @Nullable String receiverPermission,
+            @Nullable String receiverAppOp, @Nullable BroadcastReceiver resultReceiver,
+            @Nullable Handler scheduler, int initialCode, @Nullable String initialData,
+            @Nullable Bundle initialExtras) {
+        Log.d(LOG_TAG, "sendOrderedBroadcastForBackgroundReceivers intent=" + intent.getAction());
+        int status = context.checkCallingOrSelfPermission(
+                "android.permission.GRANT_RUNTIME_PERMISSIONS_TO_TELEPHONY_DEFAULTS");
+        if (status == PackageManager.PERMISSION_DENIED) {
+            throw new SecurityException(
+                    "Caller does not have permission to send broadcast for background receivers");
+        }
+        intent.setFlags(Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
+        if (user != null) {
+            context.createContextAsUser(user, 0).sendOrderedBroadcast(intent, receiverPermission,
+                    receiverAppOp, resultReceiver, scheduler, initialCode, initialData,
+                    initialExtras);
+        } else {
+            context.sendOrderedBroadcast(intent, receiverPermission,
+                    receiverAppOp, resultReceiver, scheduler, initialCode, initialData,
+                    initialExtras);
+        }
+    }
+}