1 /* 2 * Copyright (C) 2011 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 17 18 package com.android.emailcommon.utility; 19 20 import android.app.Activity; 21 import android.content.Intent; 22 import android.os.Bundle; 23 import android.security.KeyChain; 24 import android.security.KeyChainAliasCallback; 25 26 /** 27 * A headless Activity which simply calls into the framework {@link KeyChain} service to select 28 * a certificate to use for establishing secure connections in the Email app. 29 */ 30 public class CertificateRequestor extends Activity implements KeyChainAliasCallback { 31 32 public static final String ACTION_REQUEST_CERT = "com.android.emailcommon.REQUEST_CERT"; 33 34 public static final String EXTRA_HOST = "CertificateRequestor.host"; 35 public static final String EXTRA_PORT = "CertificateRequestor.port"; 36 37 public static final String RESULT_ALIAS = "CertificateRequestor.alias"; 38 39 @Override onCreate(Bundle savedInstanceState)40 protected void onCreate(Bundle savedInstanceState) { 41 super.onCreate(savedInstanceState); 42 43 Intent i = getIntent(); 44 String host = i.getStringExtra(EXTRA_HOST); 45 int port = i.getIntExtra(EXTRA_PORT, -1); 46 47 KeyChain.choosePrivateKeyAlias( 48 this, this, 49 null /* keytypes */, null /* issuers */, 50 host, port, 51 null /* alias */); 52 } 53 54 /** 55 * Callback for the certificate request. Does not happen on the UI thread. 56 */ 57 @Override alias(String alias)58 public void alias(String alias) { 59 if (alias == null) { 60 setResult(RESULT_CANCELED); 61 } else { 62 Intent data = new Intent(); 63 data.putExtra(RESULT_ALIAS, alias); 64 setResult(RESULT_OK, data); 65 } 66 finish(); 67 } 68 } 69