| 1 | // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | package org.chromium.content.browser; |
| 6 | |
| 7 | import android.content.Context; |
| 8 | import android.content.Intent; |
| 9 | import android.content.pm.ApplicationInfo; |
| 10 | import android.content.pm.PackageInfo; |
| 11 | import android.content.pm.PackageManager; |
| 12 | import android.content.pm.PackageManager.NameNotFoundException; |
| 13 | import android.content.pm.ResolveInfo; |
| 14 | import android.content.pm.ServiceInfo; |
| 15 | import android.os.Bundle; |
| 16 | import android.util.Log; |
| 17 | |
| 18 | import java.util.List; |
| 19 | |
| 20 | import org.chromium.base.ContextTypes; |
| 21 | |
| 22 | /** |
| 23 | * {@link PepperPluginManager} collects meta data about plugins from preloaded android apps |
| 24 | * that reply to PEPPERPLUGIN intent query. |
| 25 | */ |
| 26 | public class PepperPluginManager { |
| 27 | |
| 28 | private static final String LOGTAG = "PepperPluginManager"; |
| 29 | |
| 30 | /** |
| 31 | * Service Action: A plugin wishes to be loaded in the ContentView must |
| 32 | * provide {@link android.content.IntentFilter IntentFilter} that accepts |
| 33 | * this action in its AndroidManifest.xml. |
| 34 | */ |
| 35 | public static final String PEPPER_PLUGIN_ACTION = "org.chromium.intent.PEPPERPLUGIN"; |
| 36 | public static final String PEPPER_PLUGIN_ROOT = "/system/lib/pepperplugin/"; |
| 37 | |
| 38 | // A plugin will specify the following fields in its AndroidManifest.xml. |
| 39 | private static final String FILENAME = "filename"; |
| 40 | private static final String MIMETYPE = "mimetype"; |
| 41 | private static final String NAME = "name"; |
| 42 | private static final String DESCRIPTION = "description"; |
| 43 | private static final String VERSION = "version"; |
| 44 | |
| 45 | private static String getPluginDescription(Bundle metaData) { |
| 46 | // Find the name of the plugin's shared library. |
| 47 | String filename = metaData.getString(FILENAME); |
| 48 | if (filename == null || filename.isEmpty()) { |
| 49 | return null; |
| 50 | } |
| 51 | // Find the mimetype of the plugin. Flash is handled in getFlashPath. |
| 52 | String mimetype = metaData.getString(MIMETYPE); |
| 53 | if (mimetype == null || mimetype.isEmpty()) { |
| 54 | return null; |
| 55 | } |
| 56 | // Assemble the plugin info, according to the format described in |
| 57 | // pepper_plugin_registry.cc. |
| 58 | // (eg. path<#name><#description><#version>;mimetype) |
| 59 | StringBuffer plugin = new StringBuffer(PEPPER_PLUGIN_ROOT); |
| 60 | plugin.append(filename); |
| 61 | |
| 62 | // Find the (optional) name/description/version of the plugin. |
| 63 | String name = metaData.getString(NAME); |
| 64 | String description = metaData.getString(DESCRIPTION); |
| 65 | String version = metaData.getString(VERSION); |
| 66 | |
| 67 | if (name != null && !name.isEmpty()) { |
| 68 | plugin.append("#"); |
| 69 | plugin.append(name); |
| 70 | if (description != null && !description.isEmpty()) { |
| 71 | plugin.append("#"); |
| 72 | plugin.append(description); |
| 73 | if (version != null && !version.isEmpty()) { |
| 74 | plugin.append("#"); |
| 75 | plugin.append(version); |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | plugin.append(';'); |
| 80 | plugin.append(mimetype); |
| 81 | |
| 82 | return plugin.toString(); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Collects information about installed plugins and returns a plugin description |
| 87 | * string, which will be appended to for command line to load plugins. |
| 88 | * |
| 89 | * @param context Android context |
| 90 | * @return Description string for plugins |
| 91 | */ |
| 92 | public static String getPlugins(final Context context) { |
| 93 | if (DeviceUtils.isTv(context) && |
| 94 | !ContextTypes.isRunningInWebapp(context)) { |
| 95 | // Chrome-for-tv enables plugins only on webapp mode. |
| 96 | return null; |
| 97 | } |
| 98 | StringBuffer ret = new StringBuffer(); |
| 99 | PackageManager pm = context.getPackageManager(); |
| 100 | List<ResolveInfo> plugins = pm.queryIntentServices( |
| 101 | new Intent(PEPPER_PLUGIN_ACTION), |
| 102 | PackageManager.GET_SERVICES | PackageManager.GET_META_DATA); |
| 103 | for (ResolveInfo info : plugins) { |
| 104 | // Retrieve the plugin's service information. |
| 105 | ServiceInfo serviceInfo = info.serviceInfo; |
| 106 | if (serviceInfo == null || serviceInfo.metaData == null || |
| 107 | serviceInfo.packageName == null) { |
| 108 | Log.e(LOGTAG, "Can't get service information from " + info); |
| 109 | continue; |
| 110 | } |
| 111 | |
| 112 | // Retrieve the plugin's package information. |
| 113 | PackageInfo pkgInfo; |
| 114 | try { |
| 115 | pkgInfo = pm.getPackageInfo(serviceInfo.packageName, 0); |
| 116 | } catch (NameNotFoundException e) { |
| 117 | Log.e(LOGTAG, "Can't find plugin: " + serviceInfo.packageName); |
| 118 | continue; |
| 119 | } |
| 120 | if (pkgInfo == null || |
| 121 | (pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) { |
| 122 | continue; |
| 123 | } |
| 124 | Log.i(LOGTAG, "The given plugin package is preloaded: " + serviceInfo.packageName); |
| 125 | |
| 126 | String plugin = getPluginDescription(serviceInfo.metaData); |
| 127 | if (plugin == null) { |
| 128 | continue; |
| 129 | } |
| 130 | if (ret.length() > 0) { |
| 131 | ret.append(','); |
| 132 | } |
| 133 | ret.append(plugin); |
| 134 | } |
| 135 | return ret.toString(); |
| 136 | } |
| 137 | } |