1d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski/* 2d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * Copyright (C) 2017 The Android Open Source Project 3d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 4d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * Licensed under the Apache License, Version 2.0 (the "License"); 5d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * you may not use this file except in compliance with the License. 6d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * You may obtain a copy of the License at 7d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 8d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * http://www.apache.org/licenses/LICENSE-2.0 9d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 10d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * Unless required by applicable law or agreed to in writing, software 11d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * distributed under the License is distributed on an "AS IS" BASIS, 12d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * See the License for the specific language governing permissions and 14d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * limitations under the License. 15d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski */ 16d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 17d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskipackage com.android.documentsui.archives; 18d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 19d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.content.Context; 20d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.content.res.AssetFileDescriptor; 21d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.graphics.Point; 22d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.media.ExifInterface; 23d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.net.Uri; 24d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.os.Bundle; 25d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.os.CancellationSignal; 26d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.os.OperationCanceledException; 27d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.os.ParcelFileDescriptor; 285ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewskiimport android.os.storage.StorageManager; 29d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.provider.DocumentsContract; 30d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.support.annotation.Nullable; 31d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.util.Log; 32d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport android.util.jar.StrictJarFile; 33d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 3479a4e10f62794bbb0ce676df7cc36c8edf5c510fTomasz Mikolajewskiimport com.android.internal.annotations.GuardedBy; 35d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport com.android.internal.util.Preconditions; 36d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 37d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport libcore.io.IoUtils; 38d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 39d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.File; 40d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.FileDescriptor; 41d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.FileNotFoundException; 42d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.FileOutputStream; 43d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.IOException; 44d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.io.InputStream; 45d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.util.ArrayList; 4679a4e10f62794bbb0ce676df7cc36c8edf5c510fTomasz Mikolajewskiimport java.util.HashSet; 47d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.util.Iterator; 48d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.util.List; 4979a4e10f62794bbb0ce676df7cc36c8edf5c510fTomasz Mikolajewskiimport java.util.Set; 50d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.util.Stack; 513b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewskiimport java.util.concurrent.TimeUnit; 52d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskiimport java.util.zip.ZipEntry; 53d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 54d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski/** 55d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * Provides basic implementation for extracting and accessing 56d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * files within archives exposed by a document provider. 57d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 58d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * <p>This class is thread safe. 59d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski */ 60d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewskipublic class ReadableArchive extends Archive { 617bb3bdce2d2eb8e279073420151e48a4a0fb60c7Tomasz Mikolajewski private static final String TAG = "ReadableArchive"; 62d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 635ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewski private final StorageManager mStorageManager; 64d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski private final StrictJarFile mZipFile; 65d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 66d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski private ReadableArchive( 67d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Context context, 68d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski @Nullable File file, 69d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski @Nullable FileDescriptor fd, 70d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Uri archiveUri, 71d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski int accessMode, 72d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski @Nullable Uri notificationUri) 73d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throws IOException { 74d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski super(context, archiveUri, accessMode, notificationUri); 75d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (!supportsAccessMode(accessMode)) { 76d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw new IllegalStateException("Unsupported access mode."); 77d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 78d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 795ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewski mStorageManager = mContext.getSystemService(StorageManager.class); 803b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski 81d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mZipFile = file != null ? 82d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski new StrictJarFile(file.getPath(), false /* verify */, 83d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski false /* signatures */) : 84d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski new StrictJarFile(fd, false /* verify */, false /* signatures */); 85d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 86d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski ZipEntry entry; 87d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski String entryPath; 88d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final Iterator<ZipEntry> it = mZipFile.iterator(); 89d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final Stack<ZipEntry> stack = new Stack<>(); 90d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski while (it.hasNext()) { 91d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski entry = it.next(); 92d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (entry.isDirectory() != entry.getName().endsWith("/")) { 93d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw new IOException( 94d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "Directories must have a trailing slash, and files must not."); 95d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 96d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski entryPath = getEntryPath(entry); 97d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (mEntries.containsKey(entryPath)) { 98d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw new IOException("Multiple entries with the same name are not supported."); 99d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 100d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mEntries.put(entryPath, entry); 101d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (entry.isDirectory()) { 102d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mTree.put(entryPath, new ArrayList<ZipEntry>()); 103d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 104d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (!"/".equals(entryPath)) { // Skip root, as it doesn't have a parent. 105d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski stack.push(entry); 106d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 107d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 108d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 109d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski int delimiterIndex; 110d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski String parentPath; 111d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski ZipEntry parentEntry; 112d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski List<ZipEntry> parentList; 113d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 114d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Go through all directories recursively and build a tree structure. 115d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski while (stack.size() > 0) { 116d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski entry = stack.pop(); 117d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 118d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski entryPath = getEntryPath(entry); 119d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski delimiterIndex = entryPath.lastIndexOf('/', entry.isDirectory() 120d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski ? entryPath.length() - 2 : entryPath.length() - 1); 121d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentPath = entryPath.substring(0, delimiterIndex) + "/"; 122d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 123d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentList = mTree.get(parentPath); 124d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 125d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (parentList == null) { 126d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // The ZIP file doesn't contain all directories leading to the entry. 127d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // It's rare, but can happen in a valid ZIP archive. In such case create a 128d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // fake ZipEntry and add it on top of the stack to process it next. 129d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentEntry = new ZipEntry(parentPath); 130d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentEntry.setSize(0); 131d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentEntry.setTime(entry.getTime()); 132d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mEntries.put(parentPath, parentEntry); 133d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 134d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (!"/".equals(parentPath)) { 135d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski stack.push(parentEntry); 136d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 137d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 138d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentList = new ArrayList<>(); 139d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mTree.put(parentPath, parentList); 140d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 141d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 142d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski parentList.add(entry); 143d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 144d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 145d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 146d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski /** 147d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @see ParcelFileDescriptor 148d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski */ 149d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski public static boolean supportsAccessMode(int accessMode) { 150d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski return accessMode == ParcelFileDescriptor.MODE_READ_ONLY; 151d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 152d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 153d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski /** 154d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * Creates a DocumentsArchive instance for opening, browsing and accessing 155d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * documents within the archive passed as a file descriptor. 156d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 157d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * If the file descriptor is not seekable, then a snapshot will be created. 158d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 159d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * This method takes ownership for the passed descriptor. The caller must 160a903c2cdad65d0fe163a4152faa6bd05e2888b22Tomasz Mikolajewski * not use it after passing. 161d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * 162d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @param context Context of the provider. 163d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @param descriptor File descriptor for the archive's contents. 164d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @param archiveUri Uri of the archive document. 165d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @param accessMode Access mode for the archive {@see ParcelFileDescriptor}. 166d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski * @param Uri notificationUri Uri for notifying that the archive file has changed. 167d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski */ 168d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski public static ReadableArchive createForParcelFileDescriptor( 169d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Context context, ParcelFileDescriptor descriptor, Uri archiveUri, int accessMode, 170d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski @Nullable Uri notificationUri) 171d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throws IOException { 172d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski FileDescriptor fd = null; 173d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try { 174d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (canSeek(descriptor)) { 175d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski fd = new FileDescriptor(); 176d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski fd.setInt$(descriptor.detachFd()); 177d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski return new ReadableArchive(context, null, fd, archiveUri, accessMode, 178d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski notificationUri); 179d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 180d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 181d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Fallback for non-seekable file descriptors. 182d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski File snapshotFile = null; 183d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try { 184d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Create a copy of the archive, as ZipFile doesn't operate on streams. 185d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Moreover, ZipInputStream would be inefficient for large files on 186d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // pipes. 187d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski snapshotFile = File.createTempFile("com.android.documentsui.snapshot{", 188d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "}.zip", context.getCacheDir()); 189d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 190d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try ( 191d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final FileOutputStream outputStream = 192d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski new ParcelFileDescriptor.AutoCloseOutputStream( 193d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski ParcelFileDescriptor.open( 194d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski snapshotFile, ParcelFileDescriptor.MODE_WRITE_ONLY)); 195d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ParcelFileDescriptor.AutoCloseInputStream inputStream = 196d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski new ParcelFileDescriptor.AutoCloseInputStream(descriptor); 197d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski ) { 198d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final byte[] buffer = new byte[32 * 1024]; 199d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski int bytes; 200d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski while ((bytes = inputStream.read(buffer)) != -1) { 201d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski outputStream.write(buffer, 0, bytes); 202d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 203d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski outputStream.flush(); 204d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 205d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski return new ReadableArchive(context, snapshotFile, null, archiveUri, accessMode, 206d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski notificationUri); 207d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } finally { 208d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // On UNIX the file will be still available for processes which opened it, even 209d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // after deleting it. Remove it ASAP, as it won't be used by anyone else. 210d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (snapshotFile != null) { 211d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski snapshotFile.delete(); 212d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 213d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 214d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } catch (Exception e) { 215d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Since the method takes ownership of the passed descriptor, close it 216d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // on exception. 217d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski IoUtils.closeQuietly(descriptor); 218d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski IoUtils.closeQuietly(fd); 219d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw e; 220d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 221d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 222d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 2237bb3bdce2d2eb8e279073420151e48a4a0fb60c7Tomasz Mikolajewski @Override 224d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski public ParcelFileDescriptor openDocument( 225d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski String documentId, String mode, @Nullable final CancellationSignal signal) 226d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throws FileNotFoundException { 227d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski MorePreconditions.checkArgumentEquals("r", mode, 228d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "Invalid mode. Only reading \"r\" supported, but got: \"%s\"."); 229d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ArchiveId parsedId = ArchiveId.fromDocumentId(documentId); 230d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski MorePreconditions.checkArgumentEquals(mArchiveUri, parsedId.mArchiveUri, 231d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "Mismatching archive Uri. Expected: %s, actual: %s."); 232d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 233d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ZipEntry entry = mEntries.get(parsedId.mPath); 234d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (entry == null) { 235d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw new FileNotFoundException(); 236d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 237d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 238d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try { 2395ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewski return mStorageManager.openProxyFileDescriptor( 2405ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewski ParcelFileDescriptor.MODE_READ_ONLY, new Proxy(mZipFile, entry)); 241d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } catch (IOException e) { 2425ed698344f36d5ce7c342033e7c8fe370d1c9c69Tomasz Mikolajewski throw new IllegalStateException(e); 243d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 244d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 245d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 2467bb3bdce2d2eb8e279073420151e48a4a0fb60c7Tomasz Mikolajewski @Override 247d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski public AssetFileDescriptor openDocumentThumbnail( 248d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski String documentId, Point sizeHint, final CancellationSignal signal) 249d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throws FileNotFoundException { 250d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ArchiveId parsedId = ArchiveId.fromDocumentId(documentId); 251d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski MorePreconditions.checkArgumentEquals(mArchiveUri, parsedId.mArchiveUri, 252d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "Mismatching archive Uri. Expected: %s, actual: %s."); 253d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Preconditions.checkArgument(getDocumentType(documentId).startsWith("image/"), 254d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski "Thumbnails only supported for image/* MIME type."); 255d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 256d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ZipEntry entry = mEntries.get(parsedId.mPath); 257d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (entry == null) { 258d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski throw new FileNotFoundException(); 259d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 260d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 261d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski InputStream inputStream = null; 262d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try { 263d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski inputStream = mZipFile.getInputStream(entry); 264d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final ExifInterface exif = new ExifInterface(inputStream); 265d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski if (exif.hasThumbnail()) { 266d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Bundle extras = null; 267d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski switch (exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1)) { 268d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski case ExifInterface.ORIENTATION_ROTATE_90: 269d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras = new Bundle(1); 270d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras.putInt(DocumentsContract.EXTRA_ORIENTATION, 90); 271d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski break; 272d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski case ExifInterface.ORIENTATION_ROTATE_180: 273d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras = new Bundle(1); 274d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras.putInt(DocumentsContract.EXTRA_ORIENTATION, 180); 275d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski break; 276d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski case ExifInterface.ORIENTATION_ROTATE_270: 277d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras = new Bundle(1); 278d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski extras.putInt(DocumentsContract.EXTRA_ORIENTATION, 270); 279d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski break; 280d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 281d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski final long[] range = exif.getThumbnailRange(); 282d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski return new AssetFileDescriptor( 283d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski openDocument(documentId, "r", signal), range[0], range[1], extras); 284d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 285d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } catch (IOException e) { 286d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Ignore the exception, as reading the EXIF may legally fail. 287d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski Log.e(TAG, "Failed to obtain thumbnail from EXIF.", e); 288d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } finally { 289d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski IoUtils.closeQuietly(inputStream); 290d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 291d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 292d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski return new AssetFileDescriptor( 293d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski openDocument(documentId, "r", signal), 0, entry.getSize(), null); 294d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 295d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski 2963b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski /** 2973b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski * Closes an archive. 2983b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski * 2993b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski * <p>This method does not block until shutdown. Once called, other methods should not be 3003b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski * called. Any active pipes will be terminated. 3013b135ef27a918143489cae0d99770890f3bbb3b6Tomasz Mikolajewski */ 302d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski @Override 303d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski public void close() { 304d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski try { 305d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski mZipFile.close(); 306d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } catch (IOException e) { 307d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski // Silent close. 308d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 309d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski } 310d683f9756b0c56d28693c4d0269217e8fcebf76aTomasz Mikolajewski}; 311