Home | History | Annotate | Download | only in task 
      1 /*
      2  * Copyright 2014, 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.managedprovisioning.task;
     17 
     18 import android.app.DownloadManager;
     19 import android.content.Context;
     20 import android.content.pm.IPackageInstallObserver;
     21 import android.content.pm.ActivityInfo;
     22 import android.content.pm.PackageInfo;
     23 import android.content.pm.PackageManager;
     24 import android.net.Uri;
     25 import android.provider.Settings.Global;
     26 import android.text.TextUtils;
     27 import android.Manifest.permission;
     28 
     29 import com.android.managedprovisioning.ProvisionLogger;
     30 
     31 import java.io.File;
     32 
     33 /**
     34  * Installs a device owner package from a given path.
     35  * <p>
     36  * Before installing it is checked whether the file at the specified path contains the given package
     37  * and the given admin receiver.
     38  * </p>
     39  */
     40 public class InstallPackageTask {
     41     public static final int ERROR_PACKAGE_INVALID = 0;
     42     public static final int ERROR_INSTALLATION_FAILED = 1;
     43 
     44     private final Context mContext;
     45     private final Callback mCallback;
     46     private final String mPackageName;
     47 
     48     private String mPackageLocation;
     49     private PackageManager mPm;
     50     private int mPackageVerifierEnable;
     51 
     52     public InstallPackageTask (Context context, String packageName,
     53             Callback callback) {
     54         mCallback = callback;
     55         mContext = context;
     56         mPackageLocation = null; // Initialized in run().
     57         mPackageName = packageName;
     58     }
     59 
     60     public void run(String packageLocation) {
     61         if (TextUtils.isEmpty(packageLocation)) {
     62             ProvisionLogger.loge("Package Location is empty.");
     63             mCallback.onError(ERROR_PACKAGE_INVALID);
     64             return;
     65         }
     66         mPackageLocation = packageLocation;
     67 
     68         PackageInstallObserver observer = new PackageInstallObserver();
     69         mPm = mContext.getPackageManager();
     70 
     71         if (packageContentIsCorrect()) {
     72             // Temporarily turn off package verification.
     73             mPackageVerifierEnable = Global.getInt(mContext.getContentResolver(),
     74                     Global.PACKAGE_VERIFIER_ENABLE, 1);
     75             Global.putInt(mContext.getContentResolver(), Global.PACKAGE_VERIFIER_ENABLE, 0);
     76 
     77             Uri packageUri = Uri.parse("file://" + mPackageLocation);
     78 
     79             // Allow for replacing an existing package.
     80             // Needed in case this task is performed multiple times.
     81             mPm.installPackage(packageUri, observer,
     82                     /* flags */ PackageManager.INSTALL_REPLACE_EXISTING, mContext.getPackageName());
     83         } else {
     84             // Error should have been reported in packageContentIsCorrect().
     85             return;
     86         }
     87     }
     88 
     89     private boolean packageContentIsCorrect() {
     90         PackageInfo pi = mPm.getPackageArchiveInfo(mPackageLocation,
     91                 PackageManager.GET_RECEIVERS);
     92         if (pi == null) {
     93             ProvisionLogger.loge("Package could not be parsed successfully.");
     94             mCallback.onError(ERROR_PACKAGE_INVALID);
     95             return false;
     96         }
     97         if (!pi.packageName.equals(mPackageName)) {
     98             ProvisionLogger.loge("Package name in apk (" + pi.packageName
     99                     + ") does not match package name specified by programmer ("
    100                     + mPackageName + ").");
    101             mCallback.onError(ERROR_PACKAGE_INVALID);
    102             return false;
    103         }
    104         for (ActivityInfo ai : pi.receivers) {
    105             if (!TextUtils.isEmpty(ai.permission) &&
    106                     ai.permission.equals(android.Manifest.permission.BIND_DEVICE_ADMIN)) {
    107                 return true;
    108             }
    109         }
    110         ProvisionLogger.loge("Installed package has no admin receiver.");
    111         mCallback.onError(ERROR_PACKAGE_INVALID);
    112         return false;
    113     }
    114 
    115     private class PackageInstallObserver extends IPackageInstallObserver.Stub {
    116         @Override
    117         public void packageInstalled(String packageName, int returnCode) {
    118             // Set package verification flag to its original value.
    119             Global.putInt(mContext.getContentResolver(), Global.PACKAGE_VERIFIER_ENABLE,
    120                     mPackageVerifierEnable);
    121 
    122             if (returnCode == PackageManager.INSTALL_SUCCEEDED
    123                     && mPackageName.equals(packageName)) {
    124                 ProvisionLogger.logd("Package " + mPackageName + " is succesfully installed.");
    125 
    126                 mCallback.onSuccess();
    127             } else {
    128                 if (returnCode == PackageManager.INSTALL_FAILED_VERSION_DOWNGRADE) {
    129                     ProvisionLogger.logd("Current version of " + mPackageName
    130                             + " higher than the version to be installed.");
    131                     ProvisionLogger.logd("Package " + mPackageName + " was not reinstalled.");
    132                     mCallback.onSuccess();
    133                     return;
    134                 }
    135 
    136                 ProvisionLogger.logd("Installing package " + mPackageName + " failed.");
    137                 ProvisionLogger.logd("Errorcode returned by IPackageInstallObserver = "
    138                         + returnCode);
    139                 mCallback.onError(ERROR_INSTALLATION_FAILED);
    140             }
    141         }
    142     }
    143 
    144     public abstract static class Callback {
    145         public abstract void onSuccess();
    146         public abstract void onError(int errorCode);
    147     }
    148 }