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      1 /*
      2  * Copyright (C) 2009 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 package com.android.certinstaller;
     18 
     19 import android.content.Intent;
     20 import android.net.Uri;
     21 import android.os.Bundle;
     22 import android.security.Credentials;
     23 import android.security.KeyChain;
     24 import android.util.Log;
     25 import android.widget.Toast;
     26 
     27 import java.io.ByteArrayOutputStream;
     28 import java.io.File;
     29 import java.io.IOException;
     30 import java.io.InputStream;
     31 import java.util.List;
     32 
     33 import libcore.io.IoUtils;
     34 
     35 /**
     36  * The main class for installing certificates to the system keystore. It reacts
     37  * to the public {@link Credentials#INSTALL_ACTION} intent.
     38  */
     39 public class CertInstallerMain extends CertFile implements Runnable {
     40     @Override
     41     protected void onCreate(Bundle savedInstanceState) {
     42         super.onCreate(savedInstanceState);
     43         if (savedInstanceState != null) {
     44             return;
     45         }
     46 
     47         new Thread(new Runnable() {
     48             @Override
     49             public void run() {
     50                 // don't want to call startActivityForResult() (invoked in
     51                 // installFromFile()) here as it makes the new activity (thus
     52                 // the whole display) get stuck for about 5 seconds
     53                 runOnUiThread(CertInstallerMain.this);
     54             }
     55         }).start();
     56     }
     57 
     58     @Override
     59     public void run() {
     60         Intent intent = getIntent();
     61         String action = (intent == null) ? null : intent.getAction();
     62 
     63         if (Credentials.INSTALL_ACTION.equals(action)) {
     64             Bundle bundle = intent.getExtras();
     65             // If bundle is empty of any actual credentials, install from external storage.
     66             // Otherwise, pass extras to CertInstaller to install those credentials.
     67             // Either way, we use KeyChain.EXTRA_NAME as the default name if available.
     68             if (bundle == null
     69                     || bundle.isEmpty()
     70                     || (bundle.size() == 1 && bundle.containsKey(KeyChain.EXTRA_NAME))) {
     71                 if (!isSdCardPresent()) {
     72                     Toast.makeText(this, R.string.sdcard_not_present,
     73                             Toast.LENGTH_SHORT).show();
     74                 } else {
     75                     List<File> allFiles = getAllCertFiles();
     76                     if (allFiles.isEmpty()) {
     77                         Toast.makeText(this, R.string.no_cert_file_found,
     78                                 Toast.LENGTH_SHORT).show();
     79                     } else if (allFiles.size() == 1) {
     80                         installFromFile(allFiles.get(0));
     81                         return;
     82                     } else {
     83                         Intent newIntent = new Intent(this, CertFileList.class);
     84                         newIntent.putExtras(intent);
     85                         startActivityForResult(newIntent, REQUEST_INSTALL_CODE);
     86                         return;
     87                     }
     88                 }
     89             } else {
     90                 Intent newIntent = new Intent(this, CertInstaller.class);
     91                 newIntent.putExtras(intent);
     92                 startActivityForResult(newIntent, REQUEST_INSTALL_CODE);
     93                 return;
     94             }
     95         } else if (Intent.ACTION_VIEW.equals(action)) {
     96             Uri data = intent.getData();
     97             String type = intent.getType();
     98             if ((data != null) && (type != null)) {
     99                 byte[] payload = null;
    100                 InputStream is = null;
    101                 try {
    102                     is = getContentResolver().openInputStream(data);
    103                     ByteArrayOutputStream out = new ByteArrayOutputStream();
    104                     byte[] buffer = new byte[1024];
    105                     int read = 0;
    106                     while ((read = is.read(buffer)) > 0) {
    107                         out.write(buffer, 0, read);
    108                     }
    109                     out.flush();
    110                     payload = out.toByteArray();
    111                 } catch (IOException ignored) {
    112                     // Not much we can do - it will be logged below as an error.
    113                 } finally {
    114                     IoUtils.closeQuietly(is);
    115                 }
    116                 if (payload == null) {
    117                     Log.e("CertInstaller", "Unable to read stream for for certificate");
    118                 } else {
    119                     installByType(type, payload);
    120                 }
    121             }
    122         }
    123         finish();
    124     }
    125 
    126     private void installByType(String type, byte[] value) {
    127         Intent intent = new Intent(this, CertInstaller.class);
    128         if ("application/x-pkcs12".equals(type)) {
    129             intent.putExtra(KeyChain.EXTRA_PKCS12, value);
    130         } else if ("application/x-x509-ca-cert".equals(type)
    131                 || "application/x-x509-user-cert".equals(type)) {
    132             intent.putExtra(KeyChain.EXTRA_CERTIFICATE, value);
    133         } else {
    134             throw new AssertionError("Unknown type: " + type);
    135         }
    136         startActivityForResult(intent, REQUEST_INSTALL_CODE);
    137     }
    138 
    139     @Override
    140     protected void onInstallationDone(boolean success) {
    141         super.onInstallationDone(success);
    142         finish();
    143     }
    144 
    145     @Override
    146     protected void onError(int errorId) {
    147         finish();
    148     }
    149 }
    150