| /* |
| * Copyright (C) 2013 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 androidx.multidex; |
| |
| import android.app.Application; |
| import android.app.Instrumentation; |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.os.Build; |
| import android.util.Log; |
| |
| import dalvik.system.DexFile; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.lang.reflect.Array; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.ListIterator; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| import java.util.zip.ZipFile; |
| |
| /** |
| * MultiDex patches {@link Context#getClassLoader() the application context class |
| * loader} in order to load classes from more than one dex file. The primary |
| * {@code classes.dex} must contain the classes necessary for calling this |
| * class methods. Secondary dex files named classes2.dex, classes3.dex... found |
| * in the application apk will be added to the classloader after first call to |
| * {@link #install(Context)}. |
| * |
| * <p/> |
| * This library provides compatibility for platforms with API level 4 through 20. This library does |
| * nothing on newer versions of the platform which provide built-in support for secondary dex files. |
| */ |
| public final class MultiDex { |
| |
| static final String TAG = "MultiDex"; |
| |
| private static final String OLD_SECONDARY_FOLDER_NAME = "secondary-dexes"; |
| |
| private static final String CODE_CACHE_NAME = "code_cache"; |
| |
| private static final String CODE_CACHE_SECONDARY_FOLDER_NAME = "secondary-dexes"; |
| |
| private static final int MAX_SUPPORTED_SDK_VERSION = 20; |
| |
| private static final int MIN_SDK_VERSION = 4; |
| |
| private static final int VM_WITH_MULTIDEX_VERSION_MAJOR = 2; |
| |
| private static final int VM_WITH_MULTIDEX_VERSION_MINOR = 1; |
| |
| private static final String NO_KEY_PREFIX = ""; |
| |
| private static final Set<File> installedApk = new HashSet<File>(); |
| |
| private static final boolean IS_VM_MULTIDEX_CAPABLE = |
| isVMMultidexCapable(System.getProperty("java.vm.version")); |
| |
| private MultiDex() {} |
| |
| /** |
| * Patches the application context class loader by appending extra dex files |
| * loaded from the application apk. This method should be called in the |
| * attachBaseContext of your {@link Application}, see |
| * {@link MultiDexApplication} for more explanation and an example. |
| * |
| * @param context application context. |
| * @throws RuntimeException if an error occurred preventing the classloader |
| * extension. |
| */ |
| public static void install(Context context) { |
| Log.i(TAG, "Installing application"); |
| if (IS_VM_MULTIDEX_CAPABLE) { |
| Log.i(TAG, "VM has multidex support, MultiDex support library is disabled."); |
| return; |
| } |
| |
| if (Build.VERSION.SDK_INT < MIN_SDK_VERSION) { |
| throw new RuntimeException("MultiDex installation failed. SDK " + Build.VERSION.SDK_INT |
| + " is unsupported. Min SDK version is " + MIN_SDK_VERSION + "."); |
| } |
| |
| try { |
| ApplicationInfo applicationInfo = getApplicationInfo(context); |
| if (applicationInfo == null) { |
| Log.i(TAG, "No ApplicationInfo available, i.e. running on a test Context:" |
| + " MultiDex support library is disabled."); |
| return; |
| } |
| |
| doInstallation(context, |
| new File(applicationInfo.sourceDir), |
| new File(applicationInfo.dataDir), |
| CODE_CACHE_SECONDARY_FOLDER_NAME, |
| NO_KEY_PREFIX, |
| true); |
| |
| } catch (Exception e) { |
| Log.e(TAG, "MultiDex installation failure", e); |
| throw new RuntimeException("MultiDex installation failed (" + e.getMessage() + ")."); |
| } |
| Log.i(TAG, "install done"); |
| } |
| |
| /** |
| * Patches the instrumentation context class loader by appending extra dex files |
| * loaded from the instrumentation apk and the application apk. This method should be called in |
| * the onCreate of your {@link Instrumentation}, see |
| * {@link com.android.test.runner.MultiDexTestRunner} for an example. |
| * |
| * @param instrumentationContext instrumentation context. |
| * @param targetContext target application context. |
| * @throws RuntimeException if an error occurred preventing the classloader |
| * extension. |
| */ |
| public static void installInstrumentation(Context instrumentationContext, |
| Context targetContext) { |
| Log.i(TAG, "Installing instrumentation"); |
| |
| if (IS_VM_MULTIDEX_CAPABLE) { |
| Log.i(TAG, "VM has multidex support, MultiDex support library is disabled."); |
| return; |
| } |
| |
| if (Build.VERSION.SDK_INT < MIN_SDK_VERSION) { |
| throw new RuntimeException("MultiDex installation failed. SDK " + Build.VERSION.SDK_INT |
| + " is unsupported. Min SDK version is " + MIN_SDK_VERSION + "."); |
| } |
| try { |
| |
| ApplicationInfo instrumentationInfo = getApplicationInfo(instrumentationContext); |
| if (instrumentationInfo == null) { |
| Log.i(TAG, "No ApplicationInfo available for instrumentation, i.e. running on a" |
| + " test Context: MultiDex support library is disabled."); |
| return; |
| } |
| |
| ApplicationInfo applicationInfo = getApplicationInfo(targetContext); |
| if (applicationInfo == null) { |
| Log.i(TAG, "No ApplicationInfo available, i.e. running on a test Context:" |
| + " MultiDex support library is disabled."); |
| return; |
| } |
| |
| String instrumentationPrefix = instrumentationContext.getPackageName() + "."; |
| |
| File dataDir = new File(applicationInfo.dataDir); |
| |
| doInstallation(targetContext, |
| new File(instrumentationInfo.sourceDir), |
| dataDir, |
| instrumentationPrefix + CODE_CACHE_SECONDARY_FOLDER_NAME, |
| instrumentationPrefix, |
| false); |
| |
| doInstallation(targetContext, |
| new File(applicationInfo.sourceDir), |
| dataDir, |
| CODE_CACHE_SECONDARY_FOLDER_NAME, |
| NO_KEY_PREFIX, |
| false); |
| } catch (Exception e) { |
| Log.e(TAG, "MultiDex installation failure", e); |
| throw new RuntimeException("MultiDex installation failed (" + e.getMessage() + ")."); |
| } |
| Log.i(TAG, "Installation done"); |
| } |
| |
| /** |
| * @param mainContext context used to get filesDir, to save preference and to get the |
| * classloader to patch. |
| * @param sourceApk Apk file. |
| * @param dataDir data directory to use for code cache simulation. |
| * @param secondaryFolderName name of the folder for storing extractions. |
| * @param prefsKeyPrefix prefix of all stored preference keys. |
| * @param reinstallOnPatchRecoverableException if set to true, will attempt a clean extraction |
| * if a possibly recoverable exception occurs during classloader patching. |
| */ |
| private static void doInstallation(Context mainContext, File sourceApk, File dataDir, |
| String secondaryFolderName, String prefsKeyPrefix, |
| boolean reinstallOnPatchRecoverableException) throws IOException, |
| IllegalArgumentException, IllegalAccessException, NoSuchFieldException, |
| InvocationTargetException, NoSuchMethodException, SecurityException, |
| ClassNotFoundException, InstantiationException { |
| synchronized (installedApk) { |
| if (installedApk.contains(sourceApk)) { |
| return; |
| } |
| installedApk.add(sourceApk); |
| |
| if (Build.VERSION.SDK_INT > MAX_SUPPORTED_SDK_VERSION) { |
| Log.w(TAG, "MultiDex is not guaranteed to work in SDK version " |
| + Build.VERSION.SDK_INT + ": SDK version higher than " |
| + MAX_SUPPORTED_SDK_VERSION + " should be backed by " |
| + "runtime with built-in multidex capabilty but it's not the " |
| + "case here: java.vm.version=\"" |
| + System.getProperty("java.vm.version") + "\""); |
| } |
| |
| /* The patched class loader is expected to be a ClassLoader capable of loading DEX |
| * bytecode. We modify its pathList field to append additional DEX file entries. |
| */ |
| ClassLoader loader = getDexClassloader(mainContext); |
| if (loader == null) { |
| return; |
| } |
| |
| try { |
| clearOldDexDir(mainContext); |
| } catch (Throwable t) { |
| Log.w(TAG, "Something went wrong when trying to clear old MultiDex extraction, " |
| + "continuing without cleaning.", t); |
| } |
| |
| File dexDir = getDexDir(mainContext, dataDir, secondaryFolderName); |
| // MultiDexExtractor is taking the file lock and keeping it until it is closed. |
| // Keep it open during installSecondaryDexes and through forced extraction to ensure no |
| // extraction or optimizing dexopt is running in parallel. |
| MultiDexExtractor extractor = new MultiDexExtractor(sourceApk, dexDir); |
| IOException closeException = null; |
| try { |
| List<? extends File> files = |
| extractor.load(mainContext, prefsKeyPrefix, false); |
| try { |
| installSecondaryDexes(loader, dexDir, files); |
| // Some IOException causes may be fixed by a clean extraction. |
| } catch (IOException e) { |
| if (!reinstallOnPatchRecoverableException) { |
| throw e; |
| } |
| Log.w(TAG, "Failed to install extracted secondary dex files, retrying with " |
| + "forced extraction", e); |
| files = extractor.load(mainContext, prefsKeyPrefix, true); |
| installSecondaryDexes(loader, dexDir, files); |
| } |
| } finally { |
| try { |
| extractor.close(); |
| } catch (IOException e) { |
| // Delay throw of close exception to ensure we don't override some exception |
| // thrown during the try block. |
| closeException = e; |
| } |
| } |
| if (closeException != null) { |
| throw closeException; |
| } |
| } |
| } |
| |
| /** |
| * Returns a {@link Classloader} from the {@link Context} that is capable of reading dex |
| * bytecode or null if the Classloader is not dex-capable e.g: when running on a JVM testing |
| * environment such as Robolectric. |
| */ |
| private static ClassLoader getDexClassloader(Context context) { |
| ClassLoader loader; |
| try { |
| loader = context.getClassLoader(); |
| } catch (RuntimeException e) { |
| /* Ignore those exceptions so that we don't break tests relying on Context like |
| * a android.test.mock.MockContext or a android.content.ContextWrapper with a |
| * null base Context. |
| */ |
| Log.w(TAG, "Failure while trying to obtain Context class loader. " |
| + "Must be running in test mode. Skip patching.", e); |
| return null; |
| } |
| |
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { |
| if (loader instanceof dalvik.system.BaseDexClassLoader) { |
| return loader; |
| } |
| } else if (loader instanceof dalvik.system.DexClassLoader |
| || loader instanceof dalvik.system.PathClassLoader) { |
| return loader; |
| } |
| Log.e(TAG, "Context class loader is null or not dex-capable. " |
| + "Must be running in test mode. Skip patching."); |
| return null; |
| } |
| |
| private static ApplicationInfo getApplicationInfo(Context context) { |
| try { |
| /* Due to package install races it is possible for a process to be started from an old |
| * apk even though that apk has been replaced. Querying for ApplicationInfo by package |
| * name may return information for the new apk, leading to a runtime with the old main |
| * dex file and new secondary dex files. This leads to various problems like |
| * ClassNotFoundExceptions. Using context.getApplicationInfo() should result in the |
| * process having a consistent view of the world (even if it is of the old world). The |
| * package install races are eventually resolved and old processes are killed. |
| */ |
| return context.getApplicationInfo(); |
| } catch (RuntimeException e) { |
| /* Ignore those exceptions so that we don't break tests relying on Context like |
| * a android.test.mock.MockContext or a android.content.ContextWrapper with a null |
| * base Context. |
| */ |
| Log.w(TAG, "Failure while trying to obtain ApplicationInfo from Context. " + |
| "Must be running in test mode. Skip patching.", e); |
| return null; |
| } |
| } |
| |
| /** |
| * Identifies if the current VM has a native support for multidex, meaning there is no need for |
| * additional installation by this library. |
| * @return true if the VM handles multidex |
| */ |
| /* package visible for test */ |
| static boolean isVMMultidexCapable(String versionString) { |
| boolean isMultidexCapable = false; |
| if (versionString != null) { |
| StringTokenizer tokenizer = new StringTokenizer(versionString, "."); |
| String majorToken = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null; |
| String minorToken = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null; |
| if (majorToken != null && minorToken != null) { |
| try { |
| int major = Integer.parseInt(majorToken); |
| int minor = Integer.parseInt(minorToken); |
| isMultidexCapable = (major > VM_WITH_MULTIDEX_VERSION_MAJOR) |
| || ((major == VM_WITH_MULTIDEX_VERSION_MAJOR) |
| && (minor >= VM_WITH_MULTIDEX_VERSION_MINOR)); |
| } catch (NumberFormatException e) { |
| // let isMultidexCapable be false |
| } |
| } |
| } |
| Log.i(TAG, "VM with version " + versionString + |
| (isMultidexCapable ? |
| " has multidex support" : |
| " does not have multidex support")); |
| return isMultidexCapable; |
| } |
| |
| private static void installSecondaryDexes(ClassLoader loader, File dexDir, |
| List<? extends File> files) |
| throws IllegalArgumentException, IllegalAccessException, NoSuchFieldException, |
| InvocationTargetException, NoSuchMethodException, IOException, SecurityException, |
| ClassNotFoundException, InstantiationException { |
| if (!files.isEmpty()) { |
| if (Build.VERSION.SDK_INT >= 19) { |
| V19.install(loader, files, dexDir); |
| } else if (Build.VERSION.SDK_INT >= 14) { |
| V14.install(loader, files); |
| } else { |
| V4.install(loader, files); |
| } |
| } |
| } |
| |
| /** |
| * Locates a given field anywhere in the class inheritance hierarchy. |
| * |
| * @param instance an object to search the field into. |
| * @param name field name |
| * @return a field object |
| * @throws NoSuchFieldException if the field cannot be located |
| */ |
| private static Field findField(Object instance, String name) throws NoSuchFieldException { |
| for (Class<?> clazz = instance.getClass(); clazz != null; clazz = clazz.getSuperclass()) { |
| try { |
| Field field = clazz.getDeclaredField(name); |
| |
| |
| if (!field.isAccessible()) { |
| field.setAccessible(true); |
| } |
| |
| return field; |
| } catch (NoSuchFieldException e) { |
| // ignore and search next |
| } |
| } |
| |
| throw new NoSuchFieldException("Field " + name + " not found in " + instance.getClass()); |
| } |
| |
| /** |
| * Locates a given method anywhere in the class inheritance hierarchy. |
| * |
| * @param instance an object to search the method into. |
| * @param name method name |
| * @param parameterTypes method parameter types |
| * @return a method object |
| * @throws NoSuchMethodException if the method cannot be located |
| */ |
| private static Method findMethod(Object instance, String name, Class<?>... parameterTypes) |
| throws NoSuchMethodException { |
| for (Class<?> clazz = instance.getClass(); clazz != null; clazz = clazz.getSuperclass()) { |
| try { |
| Method method = clazz.getDeclaredMethod(name, parameterTypes); |
| |
| |
| if (!method.isAccessible()) { |
| method.setAccessible(true); |
| } |
| |
| return method; |
| } catch (NoSuchMethodException e) { |
| // ignore and search next |
| } |
| } |
| |
| throw new NoSuchMethodException("Method " + name + " with parameters " + |
| Arrays.asList(parameterTypes) + " not found in " + instance.getClass()); |
| } |
| |
| /** |
| * Replace the value of a field containing a non null array, by a new array containing the |
| * elements of the original array plus the elements of extraElements. |
| * @param instance the instance whose field is to be modified. |
| * @param fieldName the field to modify. |
| * @param extraElements elements to append at the end of the array. |
| */ |
| private static void expandFieldArray(Object instance, String fieldName, |
| Object[] extraElements) throws NoSuchFieldException, IllegalArgumentException, |
| IllegalAccessException { |
| Field jlrField = findField(instance, fieldName); |
| Object[] original = (Object[]) jlrField.get(instance); |
| Object[] combined = (Object[]) Array.newInstance( |
| original.getClass().getComponentType(), original.length + extraElements.length); |
| System.arraycopy(original, 0, combined, 0, original.length); |
| System.arraycopy(extraElements, 0, combined, original.length, extraElements.length); |
| jlrField.set(instance, combined); |
| } |
| |
| private static void clearOldDexDir(Context context) throws Exception { |
| File dexDir = new File(context.getFilesDir(), OLD_SECONDARY_FOLDER_NAME); |
| if (dexDir.isDirectory()) { |
| Log.i(TAG, "Clearing old secondary dex dir (" + dexDir.getPath() + ")."); |
| File[] files = dexDir.listFiles(); |
| if (files == null) { |
| Log.w(TAG, "Failed to list secondary dex dir content (" + dexDir.getPath() + ")."); |
| return; |
| } |
| for (File oldFile : files) { |
| Log.i(TAG, "Trying to delete old file " + oldFile.getPath() + " of size " |
| + oldFile.length()); |
| if (!oldFile.delete()) { |
| Log.w(TAG, "Failed to delete old file " + oldFile.getPath()); |
| } else { |
| Log.i(TAG, "Deleted old file " + oldFile.getPath()); |
| } |
| } |
| if (!dexDir.delete()) { |
| Log.w(TAG, "Failed to delete secondary dex dir " + dexDir.getPath()); |
| } else { |
| Log.i(TAG, "Deleted old secondary dex dir " + dexDir.getPath()); |
| } |
| } |
| } |
| |
| private static File getDexDir(Context context, File dataDir, String secondaryFolderName) |
| throws IOException { |
| File cache = new File(dataDir, CODE_CACHE_NAME); |
| try { |
| mkdirChecked(cache); |
| } catch (IOException e) { |
| /* If we can't emulate code_cache, then store to filesDir. This means abandoning useless |
| * files on disk if the device ever updates to android 5+. But since this seems to |
| * happen only on some devices running android 2, this should cause no pollution. |
| */ |
| cache = new File(context.getFilesDir(), CODE_CACHE_NAME); |
| mkdirChecked(cache); |
| } |
| File dexDir = new File(cache, secondaryFolderName); |
| mkdirChecked(dexDir); |
| return dexDir; |
| } |
| |
| private static void mkdirChecked(File dir) throws IOException { |
| dir.mkdir(); |
| if (!dir.isDirectory()) { |
| File parent = dir.getParentFile(); |
| if (parent == null) { |
| Log.e(TAG, "Failed to create dir " + dir.getPath() + ". Parent file is null."); |
| } else { |
| Log.e(TAG, "Failed to create dir " + dir.getPath() + |
| ". parent file is a dir " + parent.isDirectory() + |
| ", a file " + parent.isFile() + |
| ", exists " + parent.exists() + |
| ", readable " + parent.canRead() + |
| ", writable " + parent.canWrite()); |
| } |
| throw new IOException("Failed to create directory " + dir.getPath()); |
| } |
| } |
| |
| /** |
| * Installer for platform versions 19. |
| */ |
| private static final class V19 { |
| |
| static void install(ClassLoader loader, |
| List<? extends File> additionalClassPathEntries, |
| File optimizedDirectory) |
| throws IllegalArgumentException, IllegalAccessException, |
| NoSuchFieldException, InvocationTargetException, NoSuchMethodException, |
| IOException { |
| /* The patched class loader is expected to be a descendant of |
| * dalvik.system.BaseDexClassLoader. We modify its |
| * dalvik.system.DexPathList pathList field to append additional DEX |
| * file entries. |
| */ |
| Field pathListField = findField(loader, "pathList"); |
| Object dexPathList = pathListField.get(loader); |
| ArrayList<IOException> suppressedExceptions = new ArrayList<IOException>(); |
| expandFieldArray(dexPathList, "dexElements", makeDexElements(dexPathList, |
| new ArrayList<File>(additionalClassPathEntries), optimizedDirectory, |
| suppressedExceptions)); |
| if (suppressedExceptions.size() > 0) { |
| for (IOException e : suppressedExceptions) { |
| Log.w(TAG, "Exception in makeDexElement", e); |
| } |
| Field suppressedExceptionsField = |
| findField(dexPathList, "dexElementsSuppressedExceptions"); |
| IOException[] dexElementsSuppressedExceptions = |
| (IOException[]) suppressedExceptionsField.get(dexPathList); |
| |
| if (dexElementsSuppressedExceptions == null) { |
| dexElementsSuppressedExceptions = |
| suppressedExceptions.toArray( |
| new IOException[suppressedExceptions.size()]); |
| } else { |
| IOException[] combined = |
| new IOException[suppressedExceptions.size() + |
| dexElementsSuppressedExceptions.length]; |
| suppressedExceptions.toArray(combined); |
| System.arraycopy(dexElementsSuppressedExceptions, 0, combined, |
| suppressedExceptions.size(), dexElementsSuppressedExceptions.length); |
| dexElementsSuppressedExceptions = combined; |
| } |
| |
| suppressedExceptionsField.set(dexPathList, dexElementsSuppressedExceptions); |
| |
| IOException exception = new IOException("I/O exception during makeDexElement"); |
| exception.initCause(suppressedExceptions.get(0)); |
| throw exception; |
| } |
| } |
| |
| /** |
| * A wrapper around |
| * {@code private static final dalvik.system.DexPathList#makeDexElements}. |
| */ |
| private static Object[] makeDexElements( |
| Object dexPathList, ArrayList<File> files, File optimizedDirectory, |
| ArrayList<IOException> suppressedExceptions) |
| throws IllegalAccessException, InvocationTargetException, |
| NoSuchMethodException { |
| Method makeDexElements = |
| findMethod(dexPathList, "makeDexElements", ArrayList.class, File.class, |
| ArrayList.class); |
| |
| return (Object[]) makeDexElements.invoke(dexPathList, files, optimizedDirectory, |
| suppressedExceptions); |
| } |
| } |
| |
| /** |
| * Installer for platform versions 14, 15, 16, 17 and 18. |
| */ |
| private static final class V14 { |
| |
| private interface ElementConstructor { |
| Object newInstance(File file, DexFile dex) |
| throws IllegalArgumentException, InstantiationException, |
| IllegalAccessException, InvocationTargetException, IOException; |
| } |
| |
| /** |
| * Applies for ICS and early JB (initial release and MR1). |
| */ |
| private static class ICSElementConstructor implements ElementConstructor { |
| private final Constructor<?> elementConstructor; |
| |
| ICSElementConstructor(Class<?> elementClass) |
| throws SecurityException, NoSuchMethodException { |
| elementConstructor = |
| elementClass.getConstructor(File.class, ZipFile.class, DexFile.class); |
| elementConstructor.setAccessible(true); |
| } |
| |
| @Override |
| public Object newInstance(File file, DexFile dex) |
| throws IllegalArgumentException, InstantiationException, |
| IllegalAccessException, InvocationTargetException, IOException { |
| return elementConstructor.newInstance(file, new ZipFile(file), dex); |
| } |
| } |
| |
| /** |
| * Applies for some intermediate JB (MR1.1). |
| * |
| * See Change-Id: I1a5b5d03572601707e1fb1fd4424c1ae2fd2217d |
| */ |
| private static class JBMR11ElementConstructor implements ElementConstructor { |
| private final Constructor<?> elementConstructor; |
| |
| JBMR11ElementConstructor(Class<?> elementClass) |
| throws SecurityException, NoSuchMethodException { |
| elementConstructor = elementClass |
| .getConstructor(File.class, File.class, DexFile.class); |
| elementConstructor.setAccessible(true); |
| } |
| |
| @Override |
| public Object newInstance(File file, DexFile dex) |
| throws IllegalArgumentException, InstantiationException, |
| IllegalAccessException, InvocationTargetException { |
| return elementConstructor.newInstance(file, file, dex); |
| } |
| } |
| |
| /** |
| * Applies for latest JB (MR2). |
| * |
| * See Change-Id: Iec4dca2244db9c9c793ac157e258fd61557a7a5d |
| */ |
| private static class JBMR2ElementConstructor implements ElementConstructor { |
| private final Constructor<?> elementConstructor; |
| |
| JBMR2ElementConstructor(Class<?> elementClass) |
| throws SecurityException, NoSuchMethodException { |
| elementConstructor = elementClass |
| .getConstructor(File.class, Boolean.TYPE, File.class, DexFile.class); |
| elementConstructor.setAccessible(true); |
| } |
| |
| @Override |
| public Object newInstance(File file, DexFile dex) |
| throws IllegalArgumentException, InstantiationException, |
| IllegalAccessException, InvocationTargetException { |
| return elementConstructor.newInstance(file, Boolean.FALSE, file, dex); |
| } |
| } |
| |
| private static final int EXTRACTED_SUFFIX_LENGTH = |
| MultiDexExtractor.EXTRACTED_SUFFIX.length(); |
| |
| private final ElementConstructor elementConstructor; |
| |
| static void install(ClassLoader loader, |
| List<? extends File> additionalClassPathEntries) |
| throws IOException, SecurityException, IllegalArgumentException, |
| ClassNotFoundException, NoSuchMethodException, InstantiationException, |
| IllegalAccessException, InvocationTargetException, NoSuchFieldException { |
| /* The patched class loader is expected to be a descendant of |
| * dalvik.system.BaseDexClassLoader. We modify its |
| * dalvik.system.DexPathList pathList field to append additional DEX |
| * file entries. |
| */ |
| Field pathListField = findField(loader, "pathList"); |
| Object dexPathList = pathListField.get(loader); |
| Object[] elements = new V14().makeDexElements(additionalClassPathEntries); |
| try { |
| expandFieldArray(dexPathList, "dexElements", elements); |
| } catch (NoSuchFieldException e) { |
| // dexElements was renamed pathElements for a short period during JB development, |
| // eventually it was renamed back shortly after. |
| Log.w(TAG, "Failed find field 'dexElements' attempting 'pathElements'", e); |
| expandFieldArray(dexPathList, "pathElements", elements); |
| } |
| } |
| |
| private V14() throws ClassNotFoundException, SecurityException, NoSuchMethodException { |
| ElementConstructor constructor; |
| Class<?> elementClass = Class.forName("dalvik.system.DexPathList$Element"); |
| try { |
| constructor = new ICSElementConstructor(elementClass); |
| } catch (NoSuchMethodException e1) { |
| try { |
| constructor = new JBMR11ElementConstructor(elementClass); |
| } catch (NoSuchMethodException e2) { |
| constructor = new JBMR2ElementConstructor(elementClass); |
| } |
| } |
| this.elementConstructor = constructor; |
| } |
| |
| /** |
| * An emulation of {@code private static final dalvik.system.DexPathList#makeDexElements} |
| * accepting only extracted secondary dex files. |
| * OS version is catching IOException and just logging some of them, this version is letting |
| * them through. |
| */ |
| private Object[] makeDexElements(List<? extends File> files) |
| throws IOException, SecurityException, IllegalArgumentException, |
| InstantiationException, IllegalAccessException, InvocationTargetException { |
| Object[] elements = new Object[files.size()]; |
| for (int i = 0; i < elements.length; i++) { |
| File file = files.get(i); |
| elements[i] = elementConstructor.newInstance( |
| file, |
| DexFile.loadDex(file.getPath(), optimizedPathFor(file), 0)); |
| } |
| return elements; |
| } |
| |
| /** |
| * Converts a zip file path of an extracted secondary dex to an output file path for an |
| * associated optimized dex file. |
| */ |
| private static String optimizedPathFor(File path) { |
| // Any reproducible name ending with ".dex" should do but lets keep the same name |
| // as DexPathList.optimizedPathFor |
| |
| File optimizedDirectory = path.getParentFile(); |
| String fileName = path.getName(); |
| String optimizedFileName = |
| fileName.substring(0, fileName.length() - EXTRACTED_SUFFIX_LENGTH) |
| + MultiDexExtractor.DEX_SUFFIX; |
| File result = new File(optimizedDirectory, optimizedFileName); |
| return result.getPath(); |
| } |
| } |
| |
| /** |
| * Installer for platform versions 4 to 13. |
| */ |
| private static final class V4 { |
| static void install(ClassLoader loader, |
| List<? extends File> additionalClassPathEntries) |
| throws IllegalArgumentException, IllegalAccessException, |
| NoSuchFieldException, IOException { |
| /* The patched class loader is expected to be a descendant of |
| * dalvik.system.DexClassLoader. We modify its |
| * fields mPaths, mFiles, mZips and mDexs to append additional DEX |
| * file entries. |
| */ |
| int extraSize = additionalClassPathEntries.size(); |
| |
| Field pathField = findField(loader, "path"); |
| |
| StringBuilder path = new StringBuilder((String) pathField.get(loader)); |
| String[] extraPaths = new String[extraSize]; |
| File[] extraFiles = new File[extraSize]; |
| ZipFile[] extraZips = new ZipFile[extraSize]; |
| DexFile[] extraDexs = new DexFile[extraSize]; |
| for (ListIterator<? extends File> iterator = additionalClassPathEntries.listIterator(); |
| iterator.hasNext();) { |
| File additionalEntry = iterator.next(); |
| String entryPath = additionalEntry.getAbsolutePath(); |
| path.append(':').append(entryPath); |
| int index = iterator.previousIndex(); |
| extraPaths[index] = entryPath; |
| extraFiles[index] = additionalEntry; |
| extraZips[index] = new ZipFile(additionalEntry); |
| extraDexs[index] = DexFile.loadDex(entryPath, entryPath + ".dex", 0); |
| } |
| |
| pathField.set(loader, path.toString()); |
| expandFieldArray(loader, "mPaths", extraPaths); |
| expandFieldArray(loader, "mFiles", extraFiles); |
| expandFieldArray(loader, "mZips", extraZips); |
| expandFieldArray(loader, "mDexs", extraDexs); |
| } |
| } |
| |
| } |
