mirror of https://github.com/M66B/FairEmail.git
564 lines
22 KiB
Java
564 lines
22 KiB
Java
package eu.faircode.email;
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/*
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This file is part of FairEmail.
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FairEmail is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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FairEmail is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018-2020 by Marcel Bokhorst (M66B)
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*/
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import android.annotation.SuppressLint;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.SharedPreferences;
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import android.net.Uri;
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import android.os.Bundle;
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import android.os.Handler;
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import android.provider.Settings;
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import android.util.Base64;
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import android.widget.Toast;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.fragment.app.FragmentManager;
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import androidx.fragment.app.FragmentTransaction;
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import androidx.lifecycle.Lifecycle;
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import androidx.lifecycle.LifecycleObserver;
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import androidx.lifecycle.LifecycleOwner;
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import androidx.lifecycle.OnLifecycleEvent;
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import androidx.localbroadcastmanager.content.LocalBroadcastManager;
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import androidx.preference.PreferenceManager;
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import com.android.billingclient.api.AcknowledgePurchaseParams;
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import com.android.billingclient.api.AcknowledgePurchaseResponseListener;
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import com.android.billingclient.api.BillingClient;
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import com.android.billingclient.api.BillingClientStateListener;
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import com.android.billingclient.api.BillingFlowParams;
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import com.android.billingclient.api.BillingResult;
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import com.android.billingclient.api.ConsumeParams;
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import com.android.billingclient.api.ConsumeResponseListener;
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import com.android.billingclient.api.Purchase;
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import com.android.billingclient.api.PurchaseHistoryRecord;
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import com.android.billingclient.api.PurchaseHistoryResponseListener;
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import com.android.billingclient.api.PurchasesUpdatedListener;
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import com.android.billingclient.api.SkuDetails;
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import com.android.billingclient.api.SkuDetailsParams;
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import com.android.billingclient.api.SkuDetailsResponseListener;
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import java.security.KeyFactory;
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import java.security.NoSuchAlgorithmException;
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import java.security.PublicKey;
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import java.security.Signature;
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import java.security.spec.X509EncodedKeySpec;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class ActivityBilling extends ActivityBase implements PurchasesUpdatedListener, FragmentManager.OnBackStackChangedListener {
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private BillingClient billingClient = null;
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private Map<String, SkuDetails> skuDetails = new HashMap<>();
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private List<IBillingListener> listeners = new ArrayList<>();
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static final String ACTION_PURCHASE = BuildConfig.APPLICATION_ID + ".ACTION_PURCHASE";
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static final String ACTION_PURCHASE_CHECK = BuildConfig.APPLICATION_ID + ".ACTION_PURCHASE_CHECK";
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private final static long MAX_SKU_CACHE_DURATION = 24 * 3600 * 1000L; // milliseconds
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private final static long MAX_SKU_NOACK_DURATION = 24 * 3600 * 1000L; // milliseconds
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@Override
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@SuppressLint("MissingSuperCall")
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protected void onCreate(Bundle savedInstanceState) {
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onCreate(savedInstanceState, true);
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}
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protected void onCreate(Bundle savedInstanceState, boolean standalone) {
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super.onCreate(savedInstanceState);
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if (standalone) {
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setContentView(R.layout.activity_billing);
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FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
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fragmentTransaction.replace(R.id.content_frame, new FragmentPro()).addToBackStack("pro");
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fragmentTransaction.commit();
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getSupportActionBar().setDisplayHomeAsUpEnabled(true);
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getSupportFragmentManager().addOnBackStackChangedListener(this);
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}
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if (Helper.isPlayStoreInstall()) {
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Log.i("IAB start");
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billingClient = BillingClient.newBuilder(this)
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.enablePendingPurchases()
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.setListener(this)
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.build();
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billingClient.startConnection(billingClientStateListener);
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}
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}
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@Override
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public void onBackStackChanged() {
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if (getSupportFragmentManager().getBackStackEntryCount() == 0)
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finish();
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}
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@Override
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protected void onResume() {
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super.onResume();
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LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
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IntentFilter iff = new IntentFilter();
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iff.addAction(ACTION_PURCHASE);
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iff.addAction(ACTION_PURCHASE_CHECK);
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lbm.registerReceiver(receiver, iff);
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if (billingClient != null && billingClient.isReady())
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queryPurchases();
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}
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@Override
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protected void onPause() {
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super.onPause();
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LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(this);
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lbm.unregisterReceiver(receiver);
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}
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@Override
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protected void onDestroy() {
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if (billingClient != null)
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billingClient.endConnection();
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super.onDestroy();
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}
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@NonNull
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static String getSkuPro() {
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if (BuildConfig.DEBUG)
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return "android.test.purchased";
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else
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return BuildConfig.APPLICATION_ID + ".pro";
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}
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private static String getChallenge(Context context) throws NoSuchAlgorithmException {
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String android_id = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
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return Helper.sha256(android_id);
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}
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private static String getResponse(Context context) throws NoSuchAlgorithmException {
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return Helper.sha256(BuildConfig.APPLICATION_ID + getChallenge(context));
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}
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static boolean activatePro(Context context, Uri data) throws NoSuchAlgorithmException {
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String challenge = getChallenge(context);
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String response = data.getQueryParameter("response");
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Log.i("IAB challenge=" + challenge);
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Log.i("IAB response=" + response);
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String expected = getResponse(context);
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if (expected.equals(response)) {
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Log.i("IAB response valid");
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
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prefs.edit()
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.putBoolean("pro", true)
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.putBoolean("play_store", false)
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.apply();
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WidgetUnified.updateData(context);
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return true;
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} else {
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Log.i("IAB response invalid");
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return false;
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}
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}
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static boolean isPro(Context context) {
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if (BuildConfig.DEBUG && false)
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return true;
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return PreferenceManager.getDefaultSharedPreferences(context).getBoolean("pro", false);
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}
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private BroadcastReceiver receiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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if (getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED)) {
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if (ACTION_PURCHASE.equals(intent.getAction()))
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onPurchase(intent);
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else if (ACTION_PURCHASE_CHECK.equals(intent.getAction()))
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onPurchaseCheck(intent);
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}
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}
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};
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private void onPurchase(Intent intent) {
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if (Helper.isPlayStoreInstall()) {
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BillingFlowParams.Builder flowParams = BillingFlowParams.newBuilder();
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if (skuDetails.containsKey(getSkuPro())) {
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Log.i("IAB purchase SKU=" + skuDetails.get(getSkuPro()));
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flowParams.setSkuDetails(skuDetails.get(getSkuPro()));
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}
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BillingResult result = billingClient.launchBillingFlow(this, flowParams.build());
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if (result.getResponseCode() != BillingClient.BillingResponseCode.OK)
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reportError(result, "IAB launch billing flow");
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} else
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try {
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Uri uri = Uri.parse(BuildConfig.PRO_FEATURES_URI + "?challenge=" + getChallenge(this));
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Helper.view(this, uri, true);
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} catch (NoSuchAlgorithmException ex) {
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Log.unexpectedError(getSupportFragmentManager(), ex);
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}
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}
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private void onPurchaseCheck(Intent intent) {
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billingClient.queryPurchaseHistoryAsync(BillingClient.SkuType.INAPP, new PurchaseHistoryResponseListener() {
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@Override
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public void onPurchaseHistoryResponse(BillingResult result, List<PurchaseHistoryRecord> records) {
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK) {
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for (PurchaseHistoryRecord record : records)
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Log.i("IAB history=" + record.toString());
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queryPurchases();
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ToastEx.makeText(ActivityBilling.this, R.string.title_setup_done, Toast.LENGTH_LONG).show();
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} else
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reportError(result, "IAB history");
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}
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});
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}
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private BillingClientStateListener billingClientStateListener = new BillingClientStateListener() {
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private int backoff = 4; // seconds
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@Override
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public void onBillingSetupFinished(BillingResult result) {
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK) {
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for (IBillingListener listener : listeners)
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listener.onConnected();
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backoff = 4;
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queryPurchases();
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} else
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reportError(result, "IAB connected");
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}
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@Override
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public void onBillingServiceDisconnected() {
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for (IBillingListener listener : listeners)
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listener.onDisconnected();
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backoff *= 2;
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retry(backoff);
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}
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};
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private void retry(int backoff) {
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Log.i("IAB connect retry in " + backoff + " s");
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new Handler().postDelayed(new Runnable() {
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@Override
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public void run() {
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if (!billingClient.isReady())
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billingClient.startConnection(billingClientStateListener);
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}
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}, backoff * 1000L);
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}
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@Override
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public void onPurchasesUpdated(BillingResult result, @Nullable List<Purchase> purchases) {
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK)
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checkPurchases(purchases);
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else
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reportError(result, "IAB purchases updated");
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}
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private void queryPurchases() {
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Purchase.PurchasesResult result = billingClient.queryPurchases(BillingClient.SkuType.INAPP);
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK)
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checkPurchases(result.getPurchasesList());
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else
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reportError(result.getBillingResult(), "IAB query purchases");
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}
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interface IBillingListener {
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void onConnected();
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void onDisconnected();
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void onSkuDetails(String sku, String price);
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void onPurchasePending(String sku);
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void onPurchased(String sku);
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void onError(String message);
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}
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void addBillingListener(final IBillingListener listener, LifecycleOwner owner) {
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Log.i("IAB adding billing listener=" + listener);
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listeners.add(listener);
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if (billingClient != null)
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if (billingClient.isReady()) {
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listener.onConnected();
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queryPurchases();
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} else
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listener.onDisconnected();
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owner.getLifecycle().addObserver(new LifecycleObserver() {
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@OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
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public void onDestroyed() {
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Log.i("IAB removing billing listener=" + listener);
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listeners.remove(listener);
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}
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});
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}
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private void checkPurchases(List<Purchase> purchases) {
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Log.i("IAB purchases=" + (purchases == null ? null : purchases.size()));
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List<String> query = new ArrayList<>();
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query.add(getSkuPro());
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if (purchases != null) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
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SharedPreferences.Editor editor = prefs.edit();
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if (prefs.getBoolean("play_store", true)) {
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long cached = prefs.getLong(getSkuPro() + ".cached", 0);
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if (cached + MAX_SKU_CACHE_DURATION < new Date().getTime()) {
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Log.i("IAB cache expired=" + new Date(cached));
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editor.remove("pro");
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} else
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Log.i("IAB caching until=" + new Date(cached + MAX_SKU_CACHE_DURATION));
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}
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for (Purchase purchase : purchases)
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try {
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query.remove(purchase.getSku());
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long time = purchase.getPurchaseTime();
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Log.i("IAB SKU=" + purchase.getSku() +
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" purchased=" + isPurchased(purchase) +
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" valid=" + isPurchaseValid(purchase) +
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" time=" + new Date(time));
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//if (new Date().getTime() - purchase.getPurchaseTime() > 3 * 60 * 1000L) {
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// consumePurchase(purchase);
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// continue;
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//}
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for (IBillingListener listener : listeners)
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if (isPurchaseValid(purchase))
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listener.onPurchased(purchase.getSku());
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else
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listener.onPurchasePending(purchase.getSku());
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if (isPurchased(purchase)) {
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byte[] decodedKey = Base64.decode(getString(R.string.public_key), Base64.DEFAULT);
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KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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PublicKey publicKey = keyFactory.generatePublic(new X509EncodedKeySpec(decodedKey));
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Signature sig = Signature.getInstance("SHA1withRSA");
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sig.initVerify(publicKey);
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sig.update(purchase.getOriginalJson().getBytes());
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if (sig.verify(Base64.decode(purchase.getSignature(), Base64.DEFAULT))) {
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Log.i("IAB valid signature");
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if (getSkuPro().equals(purchase.getSku())) {
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if (isPurchaseValid(purchase)) {
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editor.putBoolean("pro", true);
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editor.putLong(purchase.getSku() + ".cached", new Date().getTime());
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}
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if (!purchase.isAcknowledged())
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acknowledgePurchase(purchase, 0);
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}
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} else {
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Log.w("IAB invalid signature");
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editor.putBoolean("pro", false);
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reportError(null, "Invalid purchase");
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}
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}
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} catch (Throwable ex) {
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reportError(null, Log.formatThrowable(ex, false));
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}
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editor.apply();
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WidgetUnified.updateData(this);
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}
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if (query.size() > 0)
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querySkus(query);
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}
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private void querySkus(List<String> query) {
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Log.i("IAB query SKUs");
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SkuDetailsParams.Builder builder = SkuDetailsParams.newBuilder();
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builder.setSkusList(query);
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builder.setType(BillingClient.SkuType.INAPP);
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billingClient.querySkuDetailsAsync(builder.build(),
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new SkuDetailsResponseListener() {
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@Override
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public void onSkuDetailsResponse(BillingResult result, List<SkuDetails> skuDetailsList) {
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK) {
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for (SkuDetails skuDetail : skuDetailsList) {
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Log.i("IAB SKU detail=" + skuDetail);
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skuDetails.put(skuDetail.getSku(), skuDetail);
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for (IBillingListener listener : listeners)
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listener.onSkuDetails(skuDetail.getSku(), skuDetail.getPrice());
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}
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} else
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reportError(result, "IAB query SKUs");
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}
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});
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}
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private void consumePurchase(final Purchase purchase) {
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Log.i("IAB SKU=" + purchase.getSku() + " consuming");
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ConsumeParams params = ConsumeParams.newBuilder()
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.setPurchaseToken(purchase.getPurchaseToken())
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.build();
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billingClient.consumeAsync(params, new ConsumeResponseListener() {
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@Override
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public void onConsumeResponse(BillingResult result, String purchaseToken) {
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if (result.getResponseCode() != BillingClient.BillingResponseCode.OK)
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reportError(result, "IAB consumed SKU=" + purchase.getSku());
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}
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});
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}
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private void acknowledgePurchase(final Purchase purchase, int retry) {
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Log.i("IAB acknowledging purchase SKU=" + purchase.getSku());
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AcknowledgePurchaseParams params =
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AcknowledgePurchaseParams.newBuilder()
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.setPurchaseToken(purchase.getPurchaseToken())
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.build();
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billingClient.acknowledgePurchase(params, new AcknowledgePurchaseResponseListener() {
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@Override
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public void onAcknowledgePurchaseResponse(BillingResult result) {
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if (result.getResponseCode() == BillingClient.BillingResponseCode.OK) {
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SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ActivityBilling.this);
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SharedPreferences.Editor editor = prefs.edit();
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editor.putBoolean("pro", true);
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editor.putLong(purchase.getSku() + ".cached", new Date().getTime());
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editor.apply();
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for (IBillingListener listener : listeners)
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listener.onPurchased(purchase.getSku());
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WidgetUnified.updateData(ActivityBilling.this);
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} else {
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if (retry < 3) {
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new Handler().postDelayed(new Runnable() {
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@Override
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public void run() {
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acknowledgePurchase(purchase, retry + 1);
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}
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}, (retry + 1) * 10 * 1000L);
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} else
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reportError(result, "IAB acknowledged SKU=" + purchase.getSku());
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}
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}
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});
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}
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private boolean isPurchased(Purchase purchase) {
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return (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED);
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}
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private boolean isPurchaseValid(Purchase purchase) {
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return (isPurchased(purchase) &&
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(purchase.isAcknowledged() ||
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purchase.getPurchaseTime() + MAX_SKU_NOACK_DURATION > new Date().getTime()));
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}
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private void reportError(BillingResult result, String stage) {
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String message;
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if (result == null)
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message = stage;
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else {
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String debug = result.getDebugMessage();
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message = getBillingResponseText(result) + (debug == null ? "" : " " + debug) + " " + stage;
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// https://developer.android.com/reference/com/android/billingclient/api/BillingClient.BillingResponse#service_disconnected
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if (result.getResponseCode() == BillingClient.BillingResponseCode.SERVICE_DISCONNECTED)
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retry(60);
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}
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EntityLog.log(this, message);
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for (IBillingListener listener : listeners)
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listener.onError(message);
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}
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private static String getBillingResponseText(BillingResult result) {
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switch (result.getResponseCode()) {
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case BillingClient.BillingResponseCode.BILLING_UNAVAILABLE:
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// Billing API version is not supported for the type requested
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return "BILLING_UNAVAILABLE";
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case BillingClient.BillingResponseCode.DEVELOPER_ERROR:
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// Invalid arguments provided to the API.
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return "DEVELOPER_ERROR";
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case BillingClient.BillingResponseCode.ERROR:
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// Fatal error during the API action
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return "ERROR";
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case BillingClient.BillingResponseCode.FEATURE_NOT_SUPPORTED:
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// Requested feature is not supported by Play Store on the current device.
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return "FEATURE_NOT_SUPPORTED";
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case BillingClient.BillingResponseCode.ITEM_ALREADY_OWNED:
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// Failure to purchase since item is already owned
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return "ITEM_ALREADY_OWNED";
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case BillingClient.BillingResponseCode.ITEM_NOT_OWNED:
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// Failure to consume since item is not owned
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return "ITEM_NOT_OWNED";
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case BillingClient.BillingResponseCode.ITEM_UNAVAILABLE:
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// Requested product is not available for purchase
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return "ITEM_UNAVAILABLE";
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case BillingClient.BillingResponseCode.OK:
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// Success
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return "OK";
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case BillingClient.BillingResponseCode.SERVICE_DISCONNECTED:
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// Play Store service is not connected now - potentially transient state.
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return "SERVICE_DISCONNECTED";
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case BillingClient.BillingResponseCode.SERVICE_UNAVAILABLE:
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// Network connection is down
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return "SERVICE_UNAVAILABLE";
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case BillingClient.BillingResponseCode.SERVICE_TIMEOUT:
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// The request has reached the maximum timeout before Google Play responds.
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return "SERVICE_TIMEOUT";
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case BillingClient.BillingResponseCode.USER_CANCELED:
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// User pressed back or canceled a dialog
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return "USER_CANCELED";
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default:
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return Integer.toString(result.getResponseCode());
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}
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}
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}
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