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 android.webkit; 18 19 import java.util.ArrayList; 20 import java.util.List; 21 22 import android.annotation.SdkConstant; 23 import android.annotation.SdkConstant.SdkConstantType; 24 import android.content.Context; 25 import android.content.Intent; 26 import android.content.pm.PackageInfo; 27 import android.content.pm.PackageManager; 28 import android.content.pm.ResolveInfo; 29 import android.content.pm.ServiceInfo; 30 import android.content.pm.Signature; 31 import android.content.pm.PackageManager.NameNotFoundException; 32 import android.os.SystemProperties; 33 import android.util.Log; 34 35 /** 36 * Class for managing the relationship between the {@link WebView} and installed 37 * plugins in the system. You can find this class through 38 * {@link PluginManager#getInstance}. 39 * 40 * @hide pending API solidification 41 */ 42 public class PluginManager { 43 44 /** 45 * Service Action: A plugin wishes to be loaded in the WebView must provide 46 * {@link android.content.IntentFilter IntentFilter} that accepts this 47 * action in their AndroidManifest.xml. 48 * <p> 49 * TODO: we may change this to a new PLUGIN_ACTION if this is going to be 50 * public. 51 */ 52 @SdkConstant(SdkConstantType.SERVICE_ACTION) 53 public static final String PLUGIN_ACTION = "android.webkit.PLUGIN"; 54 55 /** 56 * A plugin wishes to be loaded in the WebView must provide this permission 57 * in their AndroidManifest.xml. 58 */ 59 public static final String PLUGIN_PERMISSION = "android.webkit.permission.PLUGIN"; 60 61 private static final String LOGTAG = "webkit"; 62 63 private static PluginManager mInstance = null; 64 65 private final Context mContext; 66 67 private ArrayList<PackageInfo> mPackageInfoCache; 68 69 // Only plugin matches one of the signatures in the list can be loaded 70 // inside the WebView process 71 private static final String SIGNATURE_1 = "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"; 72 73 private static final Signature[] SIGNATURES = new Signature[] { 74 new Signature(SIGNATURE_1) 75 }; 76 PluginManager(Context context)77 private PluginManager(Context context) { 78 mContext = context; 79 mPackageInfoCache = new ArrayList<PackageInfo>(); 80 } 81 getInstance(Context context)82 public static synchronized PluginManager getInstance(Context context) { 83 if (mInstance == null) { 84 if (context == null) { 85 throw new IllegalStateException( 86 "First call to PluginManager need a valid context."); 87 } 88 mInstance = new PluginManager(context); 89 } 90 return mInstance; 91 } 92 93 /** 94 * Signal the WebCore thread to refresh its list of plugins. Use this if the 95 * directory contents of one of the plugin directories has been modified and 96 * needs its changes reflecting. May cause plugin load and/or unload. 97 * 98 * @param reloadOpenPages Set to true to reload all open pages. 99 */ refreshPlugins(boolean reloadOpenPages)100 public void refreshPlugins(boolean reloadOpenPages) { 101 BrowserFrame.sJavaBridge.obtainMessage( 102 JWebCoreJavaBridge.REFRESH_PLUGINS, reloadOpenPages) 103 .sendToTarget(); 104 } 105 getPluginDirectories()106 String[] getPluginDirectories() { 107 108 ArrayList<String> directories = new ArrayList<String>(); 109 PackageManager pm = mContext.getPackageManager(); 110 List<ResolveInfo> plugins = pm.queryIntentServices(new Intent( 111 PLUGIN_ACTION), PackageManager.GET_SERVICES); 112 113 synchronized(mPackageInfoCache) { 114 115 // clear the list of existing packageInfo objects 116 mPackageInfoCache.clear(); 117 118 for (ResolveInfo info : plugins) { 119 ServiceInfo serviceInfo = info.serviceInfo; 120 if (serviceInfo == null) { 121 Log.w(LOGTAG, "Ignore bad plugin"); 122 continue; 123 } 124 PackageInfo pkgInfo; 125 try { 126 pkgInfo = pm.getPackageInfo(serviceInfo.packageName, 127 PackageManager.GET_PERMISSIONS 128 | PackageManager.GET_SIGNATURES); 129 } catch (NameNotFoundException e) { 130 Log.w(LOGTAG, "Cant find plugin: " + serviceInfo.packageName); 131 continue; 132 } 133 if (pkgInfo == null) { 134 continue; 135 } 136 String directory = pkgInfo.applicationInfo.dataDir + "/lib"; 137 if (directories.contains(directory)) { 138 continue; 139 } 140 String permissions[] = pkgInfo.requestedPermissions; 141 if (permissions == null) { 142 continue; 143 } 144 boolean permissionOk = false; 145 for (String permit : permissions) { 146 if (PLUGIN_PERMISSION.equals(permit)) { 147 permissionOk = true; 148 break; 149 } 150 } 151 if (!permissionOk) { 152 continue; 153 } 154 Signature signatures[] = pkgInfo.signatures; 155 if (signatures == null) { 156 continue; 157 } 158 if (SystemProperties.getBoolean("ro.secure", false)) { 159 boolean signatureMatch = false; 160 for (Signature signature : signatures) { 161 for (int i = 0; i < SIGNATURES.length; i++) { 162 if (SIGNATURES[i].equals(signature)) { 163 signatureMatch = true; 164 break; 165 } 166 } 167 } 168 if (!signatureMatch) { 169 continue; 170 } 171 } 172 mPackageInfoCache.add(pkgInfo); 173 directories.add(directory); 174 } 175 } 176 177 return directories.toArray(new String[directories.size()]); 178 } 179 getPluginsAPKName(String pluginLib)180 String getPluginsAPKName(String pluginLib) { 181 182 // basic error checking on input params 183 if (pluginLib == null || pluginLib.length() == 0) { 184 return null; 185 } 186 187 // must be synchronized to ensure the consistency of the cache 188 synchronized(mPackageInfoCache) { 189 for (PackageInfo pkgInfo : mPackageInfoCache) { 190 if (pluginLib.startsWith(pkgInfo.applicationInfo.dataDir)) { 191 return pkgInfo.packageName; 192 } 193 } 194 } 195 196 // if no apk was found then return null 197 return null; 198 } 199 getPluginSharedDataDirectory()200 String getPluginSharedDataDirectory() { 201 return mContext.getDir("plugins", 0).getPath(); 202 } 203 } 204