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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 package com.android.car.settings.accounts;
     17 
     18 import static android.content.Intent.EXTRA_USER;
     19 
     20 import android.accounts.AccountManager;
     21 import android.accounts.AccountManagerCallback;
     22 import android.accounts.AccountManagerFuture;
     23 import android.accounts.AuthenticatorException;
     24 import android.accounts.OperationCanceledException;
     25 import android.app.Activity;
     26 import android.app.PendingIntent;
     27 import android.car.user.CarUserManagerHelper;
     28 import android.content.ComponentName;
     29 import android.content.Context;
     30 import android.content.Intent;
     31 import android.os.Bundle;
     32 import android.os.UserHandle;
     33 import android.os.UserManager;
     34 import android.widget.Toast;
     35 
     36 import com.android.car.settings.R;
     37 import com.android.car.settings.common.Logger;
     38 
     39 import java.io.IOException;
     40 /**
     41  *
     42  * Entry point Activity for account setup. Works as follows
     43  *
     44  * <ol>
     45  *   <li> After receiving an account type from ChooseAccountFragment, this Activity launches the
     46  *        account setup specified by AccountManager.
     47  *   <li> After the account setup, this Activity finishes without showing anything.
     48  * </ol>
     49  *
     50  */
     51 public class AddAccountActivity extends Activity {
     52     /**
     53      * A boolean to keep the state of whether add account has already been called.
     54      */
     55     private static final String KEY_ADD_CALLED = "AddAccountCalled";
     56     /**
     57      *
     58      * Extra parameter to identify the caller. Applications may display a
     59      * different UI if the call is made from Settings or from a specific
     60      * application.
     61      *
     62      */
     63     private static final String KEY_CALLER_IDENTITY = "pendingIntent";
     64     private static final String SHOULD_NOT_RESOLVE = "SHOULDN'T RESOLVE!";
     65 
     66     private static final Logger LOG = new Logger(AddAccountActivity.class);
     67     private static final String ALLOW_SKIP = "allowSkip";
     68 
     69     /* package */ static final String EXTRA_SELECTED_ACCOUNT = "selected_account";
     70 
     71     // Show additional info regarding the use of a device with multiple users
     72     static final String EXTRA_HAS_MULTIPLE_USERS = "hasMultipleUsers";
     73 
     74     // Need a specific request code for add account activity.
     75     public static final int ADD_ACCOUNT_REQUEST = 2001;
     76 
     77     private CarUserManagerHelper mCarUserManagerHelper;
     78     private UserHandle mUserHandle;
     79     private PendingIntent mPendingIntent;
     80     private boolean mAddAccountCalled;
     81 
     82     public boolean hasMultipleUsers(Context context) {
     83         return ((UserManager) context.getSystemService(Context.USER_SERVICE))
     84                 .getUsers().size() > 1;
     85     }
     86 
     87     private final AccountManagerCallback<Bundle> mCallback = new AccountManagerCallback<Bundle>() {
     88         @Override
     89         public void run(AccountManagerFuture<Bundle> future) {
     90             if (!future.isDone()) {
     91                 LOG.v("Account manager future is not done.");
     92                 finish();
     93             }
     94             try {
     95                 Bundle result = future.getResult();
     96 
     97                 Intent intent = (Intent) result.getParcelable(AccountManager.KEY_INTENT);
     98                 Bundle addAccountOptions = new Bundle();
     99                 addAccountOptions.putBoolean(EXTRA_HAS_MULTIPLE_USERS,
    100                         hasMultipleUsers(AddAccountActivity.this));
    101                 addAccountOptions.putParcelable(EXTRA_USER, mUserHandle);
    102                 intent.putExtras(addAccountOptions);
    103                 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    104                 startActivityForResultAsUser(
    105                         intent, ADD_ACCOUNT_REQUEST, mUserHandle);
    106                 LOG.v("account added: " + result);
    107             } catch (OperationCanceledException | IOException | AuthenticatorException e) {
    108                 LOG.v("addAccount error: " + e);
    109             } finally {
    110                 finish();
    111             }
    112         }
    113     };
    114 
    115     @Override
    116     protected void onSaveInstanceState(Bundle outState) {
    117         super.onSaveInstanceState(outState);
    118         outState.putBoolean(KEY_ADD_CALLED, mAddAccountCalled);
    119         LOG.v("saved");
    120     }
    121 
    122     @Override
    123     public void onCreate(Bundle savedInstanceState) {
    124         super.onCreate(savedInstanceState);
    125         if (savedInstanceState != null) {
    126             mAddAccountCalled = savedInstanceState.getBoolean(KEY_ADD_CALLED);
    127             LOG.v("Restored from previous add account call: " + mAddAccountCalled);
    128         }
    129 
    130         mCarUserManagerHelper = new CarUserManagerHelper(this);
    131 
    132         if (mAddAccountCalled) {
    133             // We already called add account - maybe the callback was lost.
    134             finish();
    135             return;
    136         }
    137 
    138         mUserHandle = mCarUserManagerHelper.getCurrentProcessUserInfo().getUserHandle();
    139         if (mCarUserManagerHelper.isCurrentProcessUserHasRestriction(
    140                 UserManager.DISALLOW_MODIFY_ACCOUNTS)) {
    141             // We aren't allowed to add an account.
    142             Toast.makeText(
    143                     this, R.string.user_cannot_add_accounts_message, Toast.LENGTH_LONG)
    144                     .show();
    145             finish();
    146             return;
    147         }
    148         addAccount(getIntent().getStringExtra(EXTRA_SELECTED_ACCOUNT));
    149     }
    150 
    151     @Override
    152     public void onActivityResult(int requestCode, int resultCode, Intent data) {
    153         setResult(resultCode);
    154         if (mPendingIntent != null) {
    155             mPendingIntent.cancel();
    156             mPendingIntent = null;
    157         }
    158         finish();
    159     }
    160 
    161     private void addAccount(String accountType) {
    162         Bundle addAccountOptions = new Bundle();
    163         addAccountOptions.putBoolean(EXTRA_HAS_MULTIPLE_USERS, hasMultipleUsers(this));
    164         addAccountOptions.putBoolean(ALLOW_SKIP, true);
    165 
    166         /*
    167          * The identityIntent is for the purposes of establishing the identity
    168          * of the caller and isn't intended for launching activities, services
    169          * or broadcasts.
    170          */
    171         Intent identityIntent = new Intent();
    172         identityIntent.setComponent(new ComponentName(SHOULD_NOT_RESOLVE, SHOULD_NOT_RESOLVE));
    173         identityIntent.setAction(SHOULD_NOT_RESOLVE);
    174         identityIntent.addCategory(SHOULD_NOT_RESOLVE);
    175 
    176         mPendingIntent = PendingIntent.getBroadcast(this, 0, identityIntent, 0);
    177         addAccountOptions.putParcelable(KEY_CALLER_IDENTITY, mPendingIntent);
    178 
    179         AccountManager.get(this).addAccountAsUser(
    180                 accountType,
    181                 /* authTokenType= */ null,
    182                 /* requiredFeatures= */ null,
    183                 addAccountOptions,
    184                 null,
    185                 mCallback,
    186                 /* handler= */ null,
    187                 mUserHandle);
    188         mAddAccountCalled = true;
    189     }
    190 }
    191