Add functionality for number verification
Add the NumberVerificationManager and plumb it into the incoming call
flow. Also make changes to testapps to enable testing this and add a
shell command to override the authorized package.
Bug: 119675160
Test: unit, testapps. GTS later.
Change-Id: I606c4595c7ff22074314b54cafe1eff475f15ea3
diff --git a/src/com/android/phone/NumberVerificationManager.java b/src/com/android/phone/NumberVerificationManager.java
new file mode 100644
index 0000000..9ec16f8
--- /dev/null
+++ b/src/com/android/phone/NumberVerificationManager.java
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2018 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.phone;
+
+import android.content.Context;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.RemoteException;
+import android.telephony.NumberVerificationCallback;
+import android.telephony.PhoneNumberRange;
+import android.telephony.ServiceState;
+import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.internal.telephony.Call;
+import com.android.internal.telephony.INumberVerificationCallback;
+import com.android.internal.telephony.Phone;
+import com.android.internal.telephony.PhoneFactory;
+
+/**
+ * Singleton for managing the call based number verification requests.
+ */
+public class NumberVerificationManager {
+ interface PhoneListSupplier {
+ Phone[] getPhones();
+ }
+
+ private static NumberVerificationManager sInstance;
+ private static String sAuthorizedPackageOverride;
+
+ private PhoneNumberRange mCurrentRange;
+ private INumberVerificationCallback mCallback;
+ private final PhoneListSupplier mPhoneListSupplier;
+
+ // We don't really care what thread this runs on, since it's only used for a non-blocking
+ // timeout.
+ private Handler mHandler;
+
+ NumberVerificationManager(PhoneListSupplier phoneListSupplier) {
+ mPhoneListSupplier = phoneListSupplier;
+ mHandler = new Handler(Looper.getMainLooper());
+ }
+
+ private NumberVerificationManager() {
+ this(PhoneFactory::getPhones);
+ }
+
+ /**
+ * Check whether the incoming call matches one of the active filters. If so, call the callback
+ * that says that the number has been successfully verified.
+ * @param number A phone number
+ * @return true if the number matches, false otherwise
+ */
+ public synchronized boolean checkIncomingCall(String number) {
+ if (mCurrentRange == null || mCallback == null) {
+ return false;
+ }
+
+ if (mCurrentRange.matches(number)) {
+ mCurrentRange = null;
+ try {
+ mCallback.onCallReceived(number);
+ return true;
+ } catch (RemoteException e) {
+ Log.w(NumberVerificationManager.class.getSimpleName(),
+ "Remote exception calling verification complete callback");
+ // Intercept the call even if there was a remote exception -- it's still going to be
+ // a strange call from a robot number
+ return true;
+ } finally {
+ mCallback = null;
+ }
+ }
+ return false;
+ }
+
+ synchronized void requestVerification(PhoneNumberRange numberRange,
+ INumberVerificationCallback callback, long timeoutMillis) {
+ if (!checkNumberVerificationFeasibility(callback)) {
+ return;
+ }
+
+ mCallback = callback;
+ mCurrentRange = numberRange;
+
+ mHandler.postDelayed(() -> {
+ synchronized (NumberVerificationManager.this) {
+ // Check whether the verification finished already -- if so, don't call anything.
+ if (mCallback != null && mCurrentRange != null) {
+ try {
+ mCallback.onVerificationFailed(NumberVerificationCallback.REASON_TIMED_OUT);
+ } catch (RemoteException e) {
+ Log.w(NumberVerificationManager.class.getSimpleName(),
+ "Remote exception calling verification error callback");
+ }
+ mCallback = null;
+ mCurrentRange = null;
+ }
+ }
+ }, timeoutMillis);
+ }
+
+ private boolean checkNumberVerificationFeasibility(INumberVerificationCallback callback) {
+ int reason = -1;
+ try {
+ if (mCurrentRange != null || mCallback != null) {
+ reason = NumberVerificationCallback.REASON_CONCURRENT_REQUESTS;
+ return false;
+ }
+ boolean doesAnyPhoneHaveRoomForIncomingCall = false;
+ boolean isAnyPhoneVoiceRegistered = false;
+ for (Phone phone : mPhoneListSupplier.getPhones()) {
+ // abort if any phone is in an emergency call or ecbm
+ if (phone.isInEmergencyCall()) {
+ reason = NumberVerificationCallback.REASON_IN_EMERGENCY_CALL;
+ return false;
+ }
+ if (phone.isInEcm()) {
+ reason = NumberVerificationCallback.REASON_IN_ECBM;
+ return false;
+ }
+
+ // make sure at least one phone is registered for voice
+ if (phone.getServiceState().getVoiceRegState() == ServiceState.STATE_IN_SERVICE) {
+ isAnyPhoneVoiceRegistered = true;
+ }
+ // make sure at least one phone has room for an incoming call.
+ if (phone.getRingingCall().getState() == Call.State.IDLE
+ && (phone.getForegroundCall().getState() == Call.State.IDLE
+ || phone.getBackgroundCall().getState() == Call.State.IDLE)) {
+ doesAnyPhoneHaveRoomForIncomingCall = true;
+ }
+ }
+ if (!isAnyPhoneVoiceRegistered) {
+ reason = NumberVerificationCallback.REASON_NETWORK_NOT_AVAILABLE;
+ return false;
+ }
+ if (!doesAnyPhoneHaveRoomForIncomingCall) {
+ reason = NumberVerificationCallback.REASON_TOO_MANY_CALLS;
+ return false;
+ }
+ } finally {
+ if (reason >= 0) {
+ try {
+ callback.onVerificationFailed(reason);
+ } catch (RemoteException e) {
+ Log.w(NumberVerificationManager.class.getSimpleName(),
+ "Remote exception calling verification error callback");
+ }
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Get the singleton instance of NumberVerificationManager.
+ * @return
+ */
+ public static NumberVerificationManager getInstance() {
+ if (sInstance == null) {
+ sInstance = new NumberVerificationManager();
+ }
+ return sInstance;
+ }
+
+ static String getAuthorizedPackage(Context context) {
+ return !TextUtils.isEmpty(sAuthorizedPackageOverride) ? sAuthorizedPackageOverride :
+ context.getResources().getString(R.string.platform_number_verification_package);
+ }
+
+ /**
+ * Used by shell commands to override the authorized package name for number verification.
+ * @param pkgName
+ */
+ static void overrideAuthorizedPackage(String pkgName) {
+ sAuthorizedPackageOverride = pkgName;
+ }
+}