/* * Copyright (C) 2009 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.webkit; import java.util.ArrayList; import java.util.List; import android.annotation.SdkConstant; import android.annotation.SdkConstant.SdkConstantType; import android.content.Context; import android.content.Intent; import android.content.pm.ApplicationInfo; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import android.content.pm.ServiceInfo; import android.content.pm.Signature; import android.content.pm.PackageManager.NameNotFoundException; import android.os.SystemProperties; import android.util.Log; /** * Class for managing the relationship between the {@link WebView} and installed * plugins in the system. You can find this class through * {@link PluginManager#getInstance}. * * @hide pending API solidification */ public class PluginManager { /** * Service Action: A plugin wishes to be loaded in the WebView must provide * {@link android.content.IntentFilter IntentFilter} that accepts this * action in their AndroidManifest.xml. *

* TODO: we may change this to a new PLUGIN_ACTION if this is going to be * public. */ @SdkConstant(SdkConstantType.SERVICE_ACTION) public static final String PLUGIN_ACTION = "android.webkit.PLUGIN"; /** * A plugin wishes to be loaded in the WebView must provide this permission * in their AndroidManifest.xml. */ public static final String PLUGIN_PERMISSION = "android.webkit.permission.PLUGIN"; private static final String LOGTAG = "PluginManager"; private static final String PLUGIN_SYSTEM_LIB = "/system/lib/plugins/"; private static final String PLUGIN_TYPE = "type"; private static final String TYPE_NATIVE = "native"; private static PluginManager mInstance = null; private final Context mContext; private ArrayList mPackageInfoCache; // Only plugin matches one of the signatures in the list can be loaded // inside the WebView process private static final String SIGNATURE_1 = "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"; private static final Signature[] SIGNATURES = new Signature[] { new Signature(SIGNATURE_1) }; private PluginManager(Context context) { mContext = context; mPackageInfoCache = new ArrayList(); } public static synchronized PluginManager getInstance(Context context) { if (mInstance == null) { if (context == null) { throw new IllegalStateException( "First call to PluginManager need a valid context."); } mInstance = new PluginManager(context.getApplicationContext()); } return mInstance; } /** * Signal the WebCore thread to refresh its list of plugins. Use this if the * directory contents of one of the plugin directories has been modified and * needs its changes reflecting. May cause plugin load and/or unload. * * @param reloadOpenPages Set to true to reload all open pages. */ public void refreshPlugins(boolean reloadOpenPages) { BrowserFrame.sJavaBridge.obtainMessage( JWebCoreJavaBridge.REFRESH_PLUGINS, reloadOpenPages) .sendToTarget(); } String[] getPluginDirectories() { ArrayList directories = new ArrayList(); PackageManager pm = mContext.getPackageManager(); List plugins = pm.queryIntentServices(new Intent(PLUGIN_ACTION), PackageManager.GET_SERVICES | PackageManager.GET_META_DATA); synchronized(mPackageInfoCache) { // clear the list of existing packageInfo objects mPackageInfoCache.clear(); for (ResolveInfo info : plugins) { // retrieve the plugin's service information ServiceInfo serviceInfo = info.serviceInfo; if (serviceInfo == null) { Log.w(LOGTAG, "Ignore bad plugin"); continue; } // retrieve information from the plugin's manifest PackageInfo pkgInfo; try { pkgInfo = pm.getPackageInfo(serviceInfo.packageName, PackageManager.GET_PERMISSIONS | PackageManager.GET_SIGNATURES); } catch (NameNotFoundException e) { Log.w(LOGTAG, "Can't find plugin: " + serviceInfo.packageName); continue; } if (pkgInfo == null) { continue; } /* * find the location of the plugin's shared library. The default * is to assume the app is either a user installed app or an * updated system app. In both of these cases the library is * stored in the app's data directory. */ String directory = pkgInfo.applicationInfo.dataDir + "/lib"; final int appFlags = pkgInfo.applicationInfo.flags; final int updatedSystemFlags = ApplicationInfo.FLAG_SYSTEM | ApplicationInfo.FLAG_UPDATED_SYSTEM_APP; // preloaded system app with no user updates if ((appFlags & updatedSystemFlags) == ApplicationInfo.FLAG_SYSTEM) { directory = PLUGIN_SYSTEM_LIB + pkgInfo.packageName; } // check if the plugin has the required permissions String permissions[] = pkgInfo.requestedPermissions; if (permissions == null) { continue; } boolean permissionOk = false; for (String permit : permissions) { if (PLUGIN_PERMISSION.equals(permit)) { permissionOk = true; break; } } if (!permissionOk) { continue; } // check to ensure the plugin is properly signed Signature signatures[] = pkgInfo.signatures; if (signatures == null) { continue; } if (SystemProperties.getBoolean("ro.secure", false)) { boolean signatureMatch = false; for (Signature signature : signatures) { for (int i = 0; i < SIGNATURES.length; i++) { if (SIGNATURES[i].equals(signature)) { signatureMatch = true; break; } } } if (!signatureMatch) { continue; } } // determine the type of plugin from the manifest if (serviceInfo.metaData == null) { Log.e(LOGTAG, "The plugin '" + serviceInfo.name + "' has no type defined"); continue; } String pluginType = serviceInfo.metaData.getString(PLUGIN_TYPE); if (!TYPE_NATIVE.equals(pluginType)) { Log.e(LOGTAG, "Unrecognized plugin type: " + pluginType); continue; } try { Class cls = getPluginClass(serviceInfo.packageName, serviceInfo.name); //TODO implement any requirements of the plugin class here! boolean classFound = true; if (!classFound) { Log.e(LOGTAG, "The plugin's class' " + serviceInfo.name + "' does not extend the appropriate class."); continue; } } catch (NameNotFoundException e) { Log.e(LOGTAG, "Can't find plugin: " + serviceInfo.packageName); continue; } catch (ClassNotFoundException e) { Log.e(LOGTAG, "Can't find plugin's class: " + serviceInfo.name); continue; } // if all checks have passed then make the plugin available mPackageInfoCache.add(pkgInfo); directories.add(directory); } } return directories.toArray(new String[directories.size()]); } /* package */ String getPluginsAPKName(String pluginLib) { // basic error checking on input params if (pluginLib == null || pluginLib.length() == 0) { return null; } // must be synchronized to ensure the consistency of the cache synchronized(mPackageInfoCache) { for (PackageInfo pkgInfo : mPackageInfoCache) { if (pluginLib.contains(pkgInfo.packageName)) { return pkgInfo.packageName; } } } // if no apk was found then return null return null; } String getPluginSharedDataDirectory() { return mContext.getDir("plugins", 0).getPath(); } /* package */ Class getPluginClass(String packageName, String className) throws NameNotFoundException, ClassNotFoundException { Context pluginContext = mContext.createPackageContext(packageName, Context.CONTEXT_INCLUDE_CODE | Context.CONTEXT_IGNORE_SECURITY); ClassLoader pluginCL = pluginContext.getClassLoader(); return pluginCL.loadClass(className); } }