From 9fdceaea784d7599ca167b7b6236e8a4e2fbfd2a Mon Sep 17 00:00:00 2001
From: Fan Zhang <zhfan@google.com>
Date: Wed, 10 Mar 2021 21:45:19 +0000
Subject: [PATCH] Fallback to AOSP eSOS settings page if OEM impl fails

When OEM eSOS implementation fails for any reason (app disabled,
misconfigured, etc), Emergency SOS settings should fallack to the
default settings page (rather than hiding the setting entirely)

Bug: 180959553
Test: robotests
Change-Id: I31c08449eff3f01d4c33bf827023f17beade93c2
---
 AndroidManifest.xml                           |   6 +
 .../EmergencyActionContentProvider.java       | 112 ++++++++++++++++++
 ...GestureEntrypointPreferenceController.java |   4 +-
 ...ureEntrypointPreferenceControllerTest.java |   5 +-
 4 files changed, 123 insertions(+), 4 deletions(-)
 create mode 100644 src/com/android/settings/emergency/EmergencyActionContentProvider.java

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 6ac1ac9d1b1..7cc6155b42a 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2902,6 +2902,12 @@
             android:grantUriPermissions="true"
             android:exported="false"/>
 
+        <provider
+            android:name=".emergency.EmergencyActionContentProvider"
+            android:authorities="com.android.settings.emergency"
+            android:permission="android.permission.CALL_PRIVILEGED"
+            android:exported="true"/>
+
         <activity
             android:name=".wifi.RequestToggleWiFiActivity"
             android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert"
diff --git a/src/com/android/settings/emergency/EmergencyActionContentProvider.java b/src/com/android/settings/emergency/EmergencyActionContentProvider.java
new file mode 100644
index 00000000000..03f0faf49db
--- /dev/null
+++ b/src/com/android/settings/emergency/EmergencyActionContentProvider.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2021 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.settings.emergency;
+
+import static android.telecom.TelecomManager.EXTRA_CALL_SOURCE;
+
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Binder;
+import android.os.Bundle;
+import android.telecom.PhoneAccount;
+import android.telecom.TelecomManager;
+import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.settings.R;
+import com.android.settingslib.emergencynumber.EmergencyNumberUtils;
+
+/**
+ * ContentProvider to delegate emergency action work
+ */
+public class EmergencyActionContentProvider extends ContentProvider {
+    private static final String TAG = "EmergencyActionContentP";
+
+    private static final String ACTION_START_EMERGENCY_CALL =
+            "com.android.settings.emergency.MAKE_EMERGENCY_CALL";
+
+    @Override
+    public Bundle call(String authority, String method, String arg, Bundle extras) {
+        int uid = Binder.getCallingUid();
+        Log.d(TAG, "calling pid/uid" + Binder.getCallingPid() + "/" + uid);
+        if (!isEmergencyInfo(getContext())) {
+            throw new SecurityException("Uid is not allowed: " + uid);
+        }
+        if (!TextUtils.equals(method, ACTION_START_EMERGENCY_CALL)) {
+            throw new IllegalArgumentException("Unsupported operation");
+        }
+        placeEmergencyCall(getContext());
+        return new Bundle();
+    }
+
+    @Override
+    public boolean onCreate() {
+        return true;
+    }
+
+    @Override
+    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
+            String sortOrder) {
+        return null;
+    }
+
+    @Override
+    public String getType(Uri uri) {
+        return null;
+    }
+
+    @Override
+    public Uri insert(Uri uri, ContentValues values) {
+        return null;
+    }
+
+    @Override
+    public int delete(Uri uri, String selection, String[] selectionArgs) {
+        return 0;
+    }
+
+    @Override
+    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
+        return 0;
+    }
+
+    private static boolean isEmergencyInfo(Context context) {
+        final int callingUid = Binder.getCallingUid();
+        final String callingPackage = context.getPackageManager().getPackagesForUid(callingUid)[0];
+        return TextUtils.equals(callingPackage,
+                context.getString(R.string.config_aosp_emergency_package_name));
+    }
+
+    private static void placeEmergencyCall(Context context) {
+        if (!context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
+            Log.i(TAG, "Telephony is not supported, skipping.");
+            return;
+        }
+        Bundle extras = new Bundle();
+        extras.putBoolean(TelecomManager.EXTRA_IS_USER_INTENT_EMERGENCY_CALL, true);
+        extras.putInt(EXTRA_CALL_SOURCE, TelecomManager.CALL_SOURCE_EMERGENCY_SHORTCUT);
+        TelecomManager telecomManager = context.getSystemService(TelecomManager.class);
+        EmergencyNumberUtils emergencyNumberUtils = new EmergencyNumberUtils(context);
+        telecomManager.placeCall(
+                Uri.fromParts(PhoneAccount.SCHEME_TEL, emergencyNumberUtils.getPoliceNumber(),
+                        /* fragment= */ null), extras);
+    }
+}
diff --git a/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceController.java b/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceController.java
index 43ff2150659..ab2c473f17d 100644
--- a/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceController.java
+++ b/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceController.java
@@ -49,11 +49,11 @@ public class EmergencyGestureEntrypointPreferenceController extends BasePreferen
         final String emergencyGestureSettingsPackageName = context.getResources().getString(
                 R.string.emergency_gesture_settings_package);
         if (!TextUtils.isEmpty(emergencyGestureSettingsPackageName)) {
-            mUseCustomIntent = true;
-            // Use custom intent if it's configured and system can resolve it.
             final Intent intent = new Intent(ACTION_EMERGENCY_GESTURE_SETTINGS)
                     .setPackage(emergencyGestureSettingsPackageName);
             if (canResolveIntent(intent)) {
+                // Use custom intent if it's configured and system can resolve it.
+                mUseCustomIntent = true;
                 mIntent = intent;
             }
         }
diff --git a/tests/robotests/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceControllerTest.java
index 65fa1873c8d..8d38509e2d9 100644
--- a/tests/robotests/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/emergency/EmergencyGestureEntrypointPreferenceControllerTest.java
@@ -105,7 +105,7 @@ public class EmergencyGestureEntrypointPreferenceControllerTest {
     }
 
     @Test
-    public void getAvailabilityStatus_noSuitableIntent_shouldReturnUnsupported() {
+    public void getAvailabilityStatus_noSuitableIntent_shouldReturnAvailable() {
         SettingsShadowResources.overrideResource(
                 R.bool.config_show_emergency_gesture_settings,
                 Boolean.TRUE);
@@ -117,7 +117,8 @@ public class EmergencyGestureEntrypointPreferenceControllerTest {
         EmergencyGestureEntrypointPreferenceController controller =
                 new EmergencyGestureEntrypointPreferenceController(mContext, PREF_KEY);
 
-        assertThat(controller.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+        assertThat(controller.mIntent).isNull();
     }
 
     private void prepareCustomIntent() {