Adds a reciever for pin migration data

The receiver can only be contacted by a sender with the ADD_CHOOSER_PINS
permission to prevent a 3rd party from abusing the feature to inject a
pin.

Test: atest ChooserPinMigrationReceiverTest
BUG: 223249318
Change-Id: I3d796b40c50b64848f86398e532c3e18b0937e61

1 files changed, 55 insertions, 0 deletions

diff --git a/java/src/com/android/intentresolver/ChooserPinMigrationReceiver.kt b/java/src/com/android/intentresolver/ChooserPinMigrationReceiver.kt
new file mode 100644
index 00000000..a3ba2192
--- /dev/null
+++ b/java/src/com/android/intentresolver/ChooserPinMigrationReceiver.kt
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2023 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.intentresolver
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.SharedPreferences
+import android.util.Log
+
+/**
+ * Broadcast receiver for receiving Chooser pin data from the legacy chooser.
+ *
+ * Unions the legacy pins with any existing pins. This receiver is protected by the ADD_CHOOSER_PINS
+ * permission. The receiver is required to have the RECEIVE_CHOOSER_PIN_MIGRATION to receive the
+ * broadcast.
+ */
+class ChooserPinMigrationReceiver(
+        private val pinnedSharedPrefsProvider: (Context) -> SharedPreferences =
+                { context -> ChooserActivity.getPinnedSharedPrefs(context) },
+) : BroadcastReceiver() {
+
+    override fun onReceive(context: Context, intent: Intent) {
+        val bundle = intent.extras ?: return
+        Log.i(TAG, "Starting migration")
+
+        val prefsEditor = pinnedSharedPrefsProvider.invoke(context).edit()
+        bundle.keySet().forEach { key ->
+            if(bundle.getBoolean(key)) {
+                prefsEditor.putBoolean(key, true)
+            }
+        }
+        prefsEditor.apply()
+
+        Log.i(TAG, "Migration complete")
+    }
+
+    companion object {
+        private const val TAG = "ChooserPinMigrationReceiver"
+    }
+}
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