1package eu.siacs.conversations.persistance;
2
3import android.annotation.TargetApi;
4import android.content.ContentResolver;
5import android.content.Context;
6import android.content.Intent;
7import android.database.Cursor;
8import android.graphics.Bitmap;
9import android.graphics.BitmapFactory;
10import android.graphics.Canvas;
11import android.graphics.Color;
12import android.graphics.Matrix;
13import android.graphics.Paint;
14import android.graphics.RectF;
15import android.media.MediaMetadataRetriever;
16import android.media.MediaScannerConnection;
17import android.net.Uri;
18import android.os.Build;
19import android.os.Environment;
20import android.os.ParcelFileDescriptor;
21import android.provider.MediaStore;
22import android.provider.OpenableColumns;
23import android.support.annotation.RequiresApi;
24import android.support.v4.content.FileProvider;
25import android.system.Os;
26import android.system.StructStat;
27import android.util.Base64;
28import android.util.Base64OutputStream;
29import android.util.Log;
30import android.util.LruCache;
31
32import java.io.ByteArrayOutputStream;
33import java.io.Closeable;
34import java.io.File;
35import java.io.FileDescriptor;
36import java.io.FileInputStream;
37import java.io.FileNotFoundException;
38import java.io.FileOutputStream;
39import java.io.IOException;
40import java.io.InputStream;
41import java.io.OutputStream;
42import java.net.ServerSocket;
43import java.net.Socket;
44import java.net.URL;
45import java.security.DigestOutputStream;
46import java.security.MessageDigest;
47import java.security.NoSuchAlgorithmException;
48import java.text.SimpleDateFormat;
49import java.util.ArrayList;
50import java.util.Date;
51import java.util.List;
52import java.util.Locale;
53import java.util.UUID;
54
55import eu.siacs.conversations.Config;
56import eu.siacs.conversations.R;
57import eu.siacs.conversations.entities.DownloadableFile;
58import eu.siacs.conversations.entities.Message;
59import eu.siacs.conversations.services.XmppConnectionService;
60import eu.siacs.conversations.ui.RecordingActivity;
61import eu.siacs.conversations.ui.util.Attachment;
62import eu.siacs.conversations.utils.CryptoHelper;
63import eu.siacs.conversations.utils.ExifHelper;
64import eu.siacs.conversations.utils.FileUtils;
65import eu.siacs.conversations.utils.FileWriterException;
66import eu.siacs.conversations.utils.MimeUtils;
67import eu.siacs.conversations.xmpp.pep.Avatar;
68
69public class FileBackend {
70
71 private static final Object THUMBNAIL_LOCK = new Object();
72
73 private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
74
75 private static final String FILE_PROVIDER = ".files";
76
77 private XmppConnectionService mXmppConnectionService;
78
79 private static final float IGNORE_PADDING = 0.15f;
80
81 public FileBackend(XmppConnectionService service) {
82 this.mXmppConnectionService = service;
83 }
84
85 private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
86 return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
87 }
88
89 public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
90 for (String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
91 if (path.startsWith(getConversationsDirectory(context, type))) {
92 return true;
93 }
94 }
95 return false;
96 }
97
98 public static long getFileSize(Context context, Uri uri) {
99 try {
100 final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
101 if (cursor != null && cursor.moveToFirst()) {
102 long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
103 cursor.close();
104 return size;
105 } else {
106 return -1;
107 }
108 } catch (Exception e) {
109 return -1;
110 }
111 }
112
113 public static boolean allFilesUnderSize(Context context, List<Attachment> attachments, long max) {
114 if (max <= 0) {
115 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
116 return true; //exception to be compatible with HTTP Upload < v0.2
117 }
118 for (Attachment attachment : attachments) {
119 if (attachment.getType() != Attachment.Type.FILE) {
120 continue;
121 }
122 String mime = attachment.getMime();
123 if (mime != null && mime.startsWith("video/")) {
124 try {
125 Dimensions dimensions = FileBackend.getVideoDimensions(context, attachment.getUri());
126 if (dimensions.getMin() > 720) {
127 Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
128 continue;
129 }
130 } catch (NotAVideoFile notAVideoFile) {
131 //ignore and fall through
132 }
133 }
134 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
135 Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
136 return false;
137 }
138 }
139 return true;
140 }
141
142 public static String getConversationsDirectory(Context context, final String type) {
143 if (Config.ONLY_INTERNAL_STORAGE) {
144 return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
145 } else {
146 return getAppMediaDirectory(context) + context.getString(R.string.app_name) + " " + type + "/";
147 }
148 }
149
150 public static String getAppMediaDirectory(Context context) {
151 return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + context.getString(R.string.app_name) + "/Media/";
152 }
153
154 public static String getBackupDirectory(Context context) {
155 return getBackupDirectory(context.getString(R.string.app_name));
156 }
157
158 public static String getBackupDirectory(String app) {
159 return Environment.getExternalStorageDirectory().getAbsolutePath() + "/"+app+"/Backup/";
160 }
161
162 private static Bitmap rotate(Bitmap bitmap, int degree) {
163 if (degree == 0) {
164 return bitmap;
165 }
166 int w = bitmap.getWidth();
167 int h = bitmap.getHeight();
168 Matrix mtx = new Matrix();
169 mtx.postRotate(degree);
170 Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
171 if (bitmap != null && !bitmap.isRecycled()) {
172 bitmap.recycle();
173 }
174 return result;
175 }
176
177 public static boolean isPathBlacklisted(String path) {
178 final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
179 return path.startsWith(androidDataPath);
180 }
181
182 private static Paint createAntiAliasingPaint() {
183 Paint paint = new Paint();
184 paint.setAntiAlias(true);
185 paint.setFilterBitmap(true);
186 paint.setDither(true);
187 return paint;
188 }
189
190 private static String getTakePhotoPath() {
191 return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
192 }
193
194 public static Uri getUriForFile(Context context, File file) {
195 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
196 try {
197 return FileProvider.getUriForFile(context, getAuthority(context), file);
198 } catch (IllegalArgumentException e) {
199 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
200 throw new SecurityException(e);
201 } else {
202 return Uri.fromFile(file);
203 }
204 }
205 } else {
206 return Uri.fromFile(file);
207 }
208 }
209
210 public static String getAuthority(Context context) {
211 return context.getPackageName() + FILE_PROVIDER;
212 }
213
214 private static boolean hasAlpha(final Bitmap bitmap) {
215 for (int x = 0; x < bitmap.getWidth(); ++x) {
216 for (int y = 0; y < bitmap.getWidth(); ++y) {
217 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
218 return true;
219 }
220 }
221 }
222 return false;
223 }
224
225 private static int calcSampleSize(File image, int size) {
226 BitmapFactory.Options options = new BitmapFactory.Options();
227 options.inJustDecodeBounds = true;
228 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
229 return calcSampleSize(options, size);
230 }
231
232
233 private static int calcSampleSize(BitmapFactory.Options options, int size) {
234 int height = options.outHeight;
235 int width = options.outWidth;
236 int inSampleSize = 1;
237
238 if (height > size || width > size) {
239 int halfHeight = height / 2;
240 int halfWidth = width / 2;
241
242 while ((halfHeight / inSampleSize) > size
243 && (halfWidth / inSampleSize) > size) {
244 inSampleSize *= 2;
245 }
246 }
247 return inSampleSize;
248 }
249
250 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
251 final String key = "attachment_"+attachment.getUuid().toString()+"_"+String.valueOf(size);
252 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
253 Bitmap bitmap = cache.get(key);
254 if (bitmap != null || cacheOnly) {
255 return bitmap;
256 }
257 if (attachment.getMime() != null && attachment.getMime().startsWith("video/")) {
258 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
259 drawOverlay(bitmap, paintOverlayBlack(bitmap) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
260 } else {
261 bitmap = cropCenterSquare(attachment.getUri(), size);
262 if (bitmap != null && "image/gif".equals(attachment.getMime())) {
263 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
264 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
265 bitmap.recycle();
266 bitmap = withGifOverlay;
267 }
268 }
269 if (bitmap != null) {
270 cache.put(key, bitmap);
271 }
272 return bitmap;
273 }
274
275 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
276 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
277 try {
278 mediaMetadataRetriever.setDataSource(context, uri);
279 } catch (RuntimeException e) {
280 throw new NotAVideoFile(e);
281 }
282 return getVideoDimensions(mediaMetadataRetriever);
283 }
284
285 private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
286 Bitmap bitmap = null;
287 try {
288 bitmap = mediaMetadataRetriever.getFrameAtTime();
289 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
290 } catch (Exception e) {
291 return null;
292 } finally {
293 if (bitmap != null) {
294 bitmap.recycle();
295 ;
296 }
297 }
298 }
299
300 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
301 String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
302 if (hasVideo == null) {
303 throw new NotAVideoFile();
304 }
305 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
306 if (dimensions != null) {
307 return dimensions;
308 }
309 final int rotation;
310 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
311 rotation = extractRotationFromMediaRetriever(metadataRetriever);
312 } else {
313 rotation = 0;
314 }
315 boolean rotated = rotation == 90 || rotation == 270;
316 int height;
317 try {
318 String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
319 height = Integer.parseInt(h);
320 } catch (Exception e) {
321 height = -1;
322 }
323 int width;
324 try {
325 String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
326 width = Integer.parseInt(w);
327 } catch (Exception e) {
328 width = -1;
329 }
330 metadataRetriever.release();
331 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
332 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
333 }
334
335 @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
336 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
337 String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
338 try {
339 return Integer.parseInt(r);
340 } catch (Exception e) {
341 return 0;
342 }
343 }
344
345 public static void close(final Closeable stream) {
346 if (stream != null) {
347 try {
348 stream.close();
349 } catch (IOException e) {
350 }
351 }
352 }
353
354 public static void close(final Socket socket) {
355 if (socket != null) {
356 try {
357 socket.close();
358 } catch (IOException e) {
359 }
360 }
361 }
362
363 public static void close(final ServerSocket socket) {
364 if (socket != null) {
365 try {
366 socket.close();
367 } catch (IOException e) {
368 }
369 }
370 }
371
372 public static boolean weOwnFile(Context context, Uri uri) {
373 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
374 return false;
375 } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
376 return fileIsInFilesDir(context, uri);
377 } else {
378 return weOwnFileLollipop(uri);
379 }
380 }
381
382 /**
383 * This is more than hacky but probably way better than doing nothing
384 * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
385 * and check against those as well
386 */
387 private static boolean fileIsInFilesDir(Context context, Uri uri) {
388 try {
389 final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
390 final String needle = new File(uri.getPath()).getCanonicalPath();
391 return needle.startsWith(haystack);
392 } catch (IOException e) {
393 return false;
394 }
395 }
396
397 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
398 private static boolean weOwnFileLollipop(Uri uri) {
399 try {
400 File file = new File(uri.getPath());
401 FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
402 StructStat st = Os.fstat(fd);
403 return st.st_uid == android.os.Process.myUid();
404 } catch (FileNotFoundException e) {
405 return false;
406 } catch (Exception e) {
407 return true;
408 }
409 }
410
411 private void createNoMedia(File diretory) {
412 final File noMedia = new File(diretory, ".nomedia");
413 if (!noMedia.exists()) {
414 try {
415 if (!noMedia.createNewFile()) {
416 Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
417 }
418 } catch (Exception e) {
419 Log.d(Config.LOGTAG, "could not create nomedia file");
420 }
421 }
422 }
423
424 public static Uri getMediaUri(Context context, File file) {
425 final String filePath = file.getAbsolutePath();
426 final Cursor cursor;
427 try {
428 cursor = context.getContentResolver().query(
429 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
430 new String[]{MediaStore.Images.Media._ID},
431 MediaStore.Images.Media.DATA + "=? ",
432 new String[]{filePath}, null);
433 } catch (SecurityException e) {
434 return null;
435 }
436 if (cursor != null && cursor.moveToFirst()) {
437 final int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
438 cursor.close();
439 return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
440 } else {
441 return null;
442 }
443 }
444
445 public void updateMediaScanner(File file) {
446 updateMediaScanner(file, null);
447 }
448
449 public void updateMediaScanner(File file, final Runnable callback) {
450 if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
451 MediaScannerConnection.scanFile(mXmppConnectionService, new String[]{file.getAbsolutePath()}, null, new MediaScannerConnection.MediaScannerConnectionClient() {
452 @Override
453 public void onMediaScannerConnected() {
454
455 }
456
457 @Override
458 public void onScanCompleted(String path, Uri uri) {
459 if (callback != null && file.getAbsolutePath().equals(path)) {
460 callback.run();
461 } else {
462 Log.d(Config.LOGTAG,"media scanner scanned wrong file");
463 if (callback != null) {
464 callback.run();
465 }
466 }
467 }
468 });
469 return;
470 /*Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
471 intent.setData(Uri.fromFile(file));
472 mXmppConnectionService.sendBroadcast(intent);*/
473 } else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
474 createNoMedia(file.getParentFile());
475 }
476 if (callback != null) {
477 callback.run();
478 }
479 }
480
481 public boolean deleteFile(Message message) {
482 File file = getFile(message);
483 if (file.delete()) {
484 updateMediaScanner(file);
485 return true;
486 } else {
487 return false;
488 }
489 }
490
491 public DownloadableFile getFile(Message message) {
492 return getFile(message, true);
493 }
494
495 public DownloadableFile getFileForPath(String path) {
496 return getFileForPath(path,MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
497 }
498
499 public DownloadableFile getFileForPath(String path, String mime) {
500 final DownloadableFile file;
501 if (path.startsWith("/")) {
502 file = new DownloadableFile(path);
503 } else {
504 if (mime != null && mime.startsWith("image/")) {
505 file = new DownloadableFile(getConversationsDirectory("Images") + path);
506 } else if (mime != null && mime.startsWith("video/")) {
507 file = new DownloadableFile(getConversationsDirectory("Videos") + path);
508 } else {
509 file = new DownloadableFile(getConversationsDirectory("Files") + path);
510 }
511 }
512 return file;
513 }
514
515 public boolean isInternalFile(final File file) {
516 final File internalFile = getFileForPath(file.getName());
517 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
518 }
519
520 public DownloadableFile getFile(Message message, boolean decrypted) {
521 final boolean encrypted = !decrypted
522 && (message.getEncryption() == Message.ENCRYPTION_PGP
523 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
524 String path = message.getRelativeFilePath();
525 if (path == null) {
526 path = message.getUuid();
527 }
528 final DownloadableFile file = getFileForPath(path, message.getMimeType());
529 if (encrypted) {
530 return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
531 } else {
532 return file;
533 }
534 }
535
536 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
537 List<Attachment> attachments = new ArrayList<>();
538 for(DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
539 final String mime = MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(relativeFilePath.path));
540 final File file = getFileForPath(relativeFilePath.path, mime);
541 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
542 }
543 return attachments;
544 }
545
546 private String getConversationsDirectory(final String type) {
547 return getConversationsDirectory(mXmppConnectionService, type);
548 }
549
550 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
551 int w = originalBitmap.getWidth();
552 int h = originalBitmap.getHeight();
553 if (w <= 0 || h <= 0) {
554 throw new IOException("Decoded bitmap reported bounds smaller 0");
555 } else if (Math.max(w, h) > size) {
556 int scalledW;
557 int scalledH;
558 if (w <= h) {
559 scalledW = Math.max((int) (w / ((double) h / size)), 1);
560 scalledH = size;
561 } else {
562 scalledW = size;
563 scalledH = Math.max((int) (h / ((double) w / size)), 1);
564 }
565 final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
566 if (!originalBitmap.isRecycled()) {
567 originalBitmap.recycle();
568 }
569 return result;
570 } else {
571 return originalBitmap;
572 }
573 }
574
575 public boolean useImageAsIs(Uri uri) {
576 String path = getOriginalPath(uri);
577 if (path == null || isPathBlacklisted(path)) {
578 return false;
579 }
580 File file = new File(path);
581 long size = file.length();
582 if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
583 return false;
584 }
585 BitmapFactory.Options options = new BitmapFactory.Options();
586 options.inJustDecodeBounds = true;
587 try {
588 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
589 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
590 return false;
591 }
592 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
593 } catch (FileNotFoundException e) {
594 return false;
595 }
596 }
597
598 public String getOriginalPath(Uri uri) {
599 return FileUtils.getPath(mXmppConnectionService, uri);
600 }
601
602 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
603 Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
604 file.getParentFile().mkdirs();
605 OutputStream os = null;
606 InputStream is = null;
607 try {
608 file.createNewFile();
609 os = new FileOutputStream(file);
610 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
611 byte[] buffer = new byte[1024];
612 int length;
613 while ((length = is.read(buffer)) > 0) {
614 try {
615 os.write(buffer, 0, length);
616 } catch (IOException e) {
617 throw new FileWriterException();
618 }
619 }
620 try {
621 os.flush();
622 } catch (IOException e) {
623 throw new FileWriterException();
624 }
625 } catch (FileNotFoundException e) {
626 throw new FileCopyException(R.string.error_file_not_found);
627 } catch (FileWriterException e) {
628 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
629 } catch (IOException e) {
630 e.printStackTrace();
631 throw new FileCopyException(R.string.error_io_exception);
632 } finally {
633 close(os);
634 close(is);
635 }
636 }
637
638 public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
639 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
640 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
641 String extension = MimeUtils.guessExtensionFromMimeType(mime);
642 if (extension == null) {
643 Log.d(Config.LOGTAG, "extension from mime type was null");
644 extension = getExtensionFromUri(uri);
645 }
646 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
647 extension = "oga";
648 }
649 message.setRelativeFilePath(message.getUuid() + "." + extension);
650 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
651 }
652
653 private String getExtensionFromUri(Uri uri) {
654 String[] projection = {MediaStore.MediaColumns.DATA};
655 String filename = null;
656 Cursor cursor;
657 try {
658 cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
659 } catch (IllegalArgumentException e) {
660 cursor = null;
661 }
662 if (cursor != null) {
663 try {
664 if (cursor.moveToFirst()) {
665 filename = cursor.getString(0);
666 }
667 } catch (Exception e) {
668 filename = null;
669 } finally {
670 cursor.close();
671 }
672 }
673 if (filename == null) {
674 final List<String> segments = uri.getPathSegments();
675 if (segments.size() > 0) {
676 filename = segments.get(segments.size() - 1);
677 }
678 }
679 int pos = filename == null ? -1 : filename.lastIndexOf('.');
680 return pos > 0 ? filename.substring(pos + 1) : null;
681 }
682
683 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
684 file.getParentFile().mkdirs();
685 InputStream is = null;
686 OutputStream os = null;
687 try {
688 if (!file.exists() && !file.createNewFile()) {
689 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
690 }
691 is = mXmppConnectionService.getContentResolver().openInputStream(image);
692 if (is == null) {
693 throw new FileCopyException(R.string.error_not_an_image_file);
694 }
695 Bitmap originalBitmap;
696 BitmapFactory.Options options = new BitmapFactory.Options();
697 int inSampleSize = (int) Math.pow(2, sampleSize);
698 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
699 options.inSampleSize = inSampleSize;
700 originalBitmap = BitmapFactory.decodeStream(is, null, options);
701 is.close();
702 if (originalBitmap == null) {
703 throw new FileCopyException(R.string.error_not_an_image_file);
704 }
705 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
706 int rotation = getRotation(image);
707 scaledBitmap = rotate(scaledBitmap, rotation);
708 boolean targetSizeReached = false;
709 int quality = Config.IMAGE_QUALITY;
710 final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
711 while (!targetSizeReached) {
712 os = new FileOutputStream(file);
713 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
714 if (!success) {
715 throw new FileCopyException(R.string.error_compressing_image);
716 }
717 os.flush();
718 targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
719 quality -= 5;
720 }
721 scaledBitmap.recycle();
722 } catch (FileNotFoundException e) {
723 throw new FileCopyException(R.string.error_file_not_found);
724 } catch (IOException e) {
725 e.printStackTrace();
726 throw new FileCopyException(R.string.error_io_exception);
727 } catch (SecurityException e) {
728 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
729 } catch (OutOfMemoryError e) {
730 ++sampleSize;
731 if (sampleSize <= 3) {
732 copyImageToPrivateStorage(file, image, sampleSize);
733 } else {
734 throw new FileCopyException(R.string.error_out_of_memory);
735 }
736 } finally {
737 close(os);
738 close(is);
739 }
740 }
741
742 public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
743 Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
744 copyImageToPrivateStorage(file, image, 0);
745 }
746
747 public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
748 switch (Config.IMAGE_FORMAT) {
749 case JPEG:
750 message.setRelativeFilePath(message.getUuid() + ".jpg");
751 break;
752 case PNG:
753 message.setRelativeFilePath(message.getUuid() + ".png");
754 break;
755 case WEBP:
756 message.setRelativeFilePath(message.getUuid() + ".webp");
757 break;
758 }
759 copyImageToPrivateStorage(getFile(message), image);
760 updateFileParams(message);
761 }
762
763 public boolean unusualBounds(Uri image) {
764 try {
765 BitmapFactory.Options options = new BitmapFactory.Options();
766 options.inJustDecodeBounds = true;
767 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
768 float ratio = (float) options.outHeight / options.outWidth;
769 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
770 } catch (Exception e) {
771 return false;
772 }
773 }
774
775 private int getRotation(File file) {
776 return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
777 }
778
779 private int getRotation(Uri image) {
780 InputStream is = null;
781 try {
782 is = mXmppConnectionService.getContentResolver().openInputStream(image);
783 return ExifHelper.getOrientation(is);
784 } catch (FileNotFoundException e) {
785 return 0;
786 } finally {
787 close(is);
788 }
789 }
790
791 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
792 final String uuid = message.getUuid();
793 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
794 Bitmap thumbnail = cache.get(uuid);
795 if ((thumbnail == null) && (!cacheOnly)) {
796 synchronized (THUMBNAIL_LOCK) {
797 thumbnail = cache.get(uuid);
798 if (thumbnail != null) {
799 return thumbnail;
800 }
801 DownloadableFile file = getFile(message);
802 final String mime = file.getMimeType();
803 if (mime.startsWith("video/")) {
804 thumbnail = getVideoPreview(file, size);
805 } else {
806 Bitmap fullsize = getFullsizeImagePreview(file, size);
807 if (fullsize == null) {
808 throw new FileNotFoundException();
809 }
810 thumbnail = resize(fullsize, size);
811 thumbnail = rotate(thumbnail, getRotation(file));
812 if (mime.equals("image/gif")) {
813 Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
814 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
815 thumbnail.recycle();
816 thumbnail = withGifOverlay;
817 }
818 }
819 cache.put(uuid, thumbnail);
820 }
821 }
822 return thumbnail;
823 }
824
825 private Bitmap getFullsizeImagePreview(File file, int size) {
826 BitmapFactory.Options options = new BitmapFactory.Options();
827 options.inSampleSize = calcSampleSize(file, size);
828 try {
829 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
830 } catch (OutOfMemoryError e) {
831 options.inSampleSize *= 2;
832 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
833 }
834 }
835
836 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
837 Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
838 Canvas canvas = new Canvas(bitmap);
839 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
840 Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
841 float left = (canvas.getWidth() - targetSize) / 2.0f;
842 float top = (canvas.getHeight() - targetSize) / 2.0f;
843 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
844 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
845 }
846
847 /**
848 * https://stackoverflow.com/a/3943023/210897
849 */
850 private boolean paintOverlayBlack(final Bitmap bitmap) {
851 final int h = bitmap.getHeight();
852 final int w = bitmap.getWidth();
853 int record = 0;
854 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
855 for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
856 int pixel = bitmap.getPixel(x, y);
857 if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
858 --record;
859 } else {
860 ++record;
861 }
862 }
863 }
864 return record < 0;
865 }
866
867 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
868 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
869 Bitmap frame;
870 try {
871 metadataRetriever.setDataSource(mXmppConnectionService, uri);
872 frame = metadataRetriever.getFrameAtTime(0);
873 metadataRetriever.release();
874 return cropCenterSquare(frame, size);
875 } catch (Exception e) {
876 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
877 frame.eraseColor(0xff000000);
878 return frame;
879 }
880 }
881
882 private Bitmap getVideoPreview(File file, int size) {
883 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
884 Bitmap frame;
885 try {
886 metadataRetriever.setDataSource(file.getAbsolutePath());
887 frame = metadataRetriever.getFrameAtTime(0);
888 metadataRetriever.release();
889 frame = resize(frame, size);
890 } catch (IOException | RuntimeException e) {
891 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
892 frame.eraseColor(0xff000000);
893 }
894 drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
895 return frame;
896 }
897
898 public Uri getTakePhotoUri() {
899 File file;
900 if (Config.ONLY_INTERNAL_STORAGE) {
901 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
902 } else {
903 file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
904 }
905 file.getParentFile().mkdirs();
906 return getUriForFile(mXmppConnectionService, file);
907 }
908
909 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
910
911 final Avatar uncompressAvatar = getUncompressedAvatar(image);
912 if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
913 return uncompressAvatar;
914 }
915 if (uncompressAvatar != null) {
916 Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
917 }
918
919 Bitmap bm = cropCenterSquare(image, size);
920 if (bm == null) {
921 return null;
922 }
923 if (hasAlpha(bm)) {
924 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
925 bm.recycle();
926 bm = cropCenterSquare(image, 96);
927 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
928 }
929 return getPepAvatar(bm, format, 100);
930 }
931
932 private Avatar getUncompressedAvatar(Uri uri) {
933 Bitmap bitmap = null;
934 try {
935 bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
936 return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
937 } catch (Exception e) {
938 return null;
939 } finally {
940 if (bitmap != null) {
941 bitmap.recycle();
942 }
943 }
944 }
945
946 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
947 try {
948 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
949 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
950 MessageDigest digest = MessageDigest.getInstance("SHA-1");
951 DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
952 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
953 return null;
954 }
955 mDigestOutputStream.flush();
956 mDigestOutputStream.close();
957 long chars = mByteArrayOutputStream.size();
958 if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
959 int q = quality - 2;
960 Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
961 return getPepAvatar(bitmap, format, q);
962 }
963 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
964 final Avatar avatar = new Avatar();
965 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
966 avatar.image = new String(mByteArrayOutputStream.toByteArray());
967 if (format.equals(Bitmap.CompressFormat.WEBP)) {
968 avatar.type = "image/webp";
969 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
970 avatar.type = "image/jpeg";
971 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
972 avatar.type = "image/png";
973 }
974 avatar.width = bitmap.getWidth();
975 avatar.height = bitmap.getHeight();
976 return avatar;
977 } catch (OutOfMemoryError e) {
978 Log.d(Config.LOGTAG,"unable to convert avatar to base64 due to low memory");
979 return null;
980 } catch (Exception e) {
981 return null;
982 }
983 }
984
985 public Avatar getStoredPepAvatar(String hash) {
986 if (hash == null) {
987 return null;
988 }
989 Avatar avatar = new Avatar();
990 File file = new File(getAvatarPath(hash));
991 FileInputStream is = null;
992 try {
993 avatar.size = file.length();
994 BitmapFactory.Options options = new BitmapFactory.Options();
995 options.inJustDecodeBounds = true;
996 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
997 is = new FileInputStream(file);
998 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
999 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1000 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1001 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1002 byte[] buffer = new byte[4096];
1003 int length;
1004 while ((length = is.read(buffer)) > 0) {
1005 os.write(buffer, 0, length);
1006 }
1007 os.flush();
1008 os.close();
1009 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1010 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1011 avatar.height = options.outHeight;
1012 avatar.width = options.outWidth;
1013 avatar.type = options.outMimeType;
1014 return avatar;
1015 } catch (NoSuchAlgorithmException | IOException e) {
1016 return null;
1017 } finally {
1018 close(is);
1019 }
1020 }
1021
1022 public boolean isAvatarCached(Avatar avatar) {
1023 File file = new File(getAvatarPath(avatar.getFilename()));
1024 return file.exists();
1025 }
1026
1027 public boolean save(final Avatar avatar) {
1028 File file;
1029 if (isAvatarCached(avatar)) {
1030 file = new File(getAvatarPath(avatar.getFilename()));
1031 avatar.size = file.length();
1032 } else {
1033 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
1034 if (file.getParentFile().mkdirs()) {
1035 Log.d(Config.LOGTAG, "created cache directory");
1036 }
1037 OutputStream os = null;
1038 try {
1039 if (!file.createNewFile()) {
1040 Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
1041 }
1042 os = new FileOutputStream(file);
1043 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1044 digest.reset();
1045 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1046 final byte[] bytes = avatar.getImageAsBytes();
1047 mDigestOutputStream.write(bytes);
1048 mDigestOutputStream.flush();
1049 mDigestOutputStream.close();
1050 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1051 if (sha1sum.equals(avatar.sha1sum)) {
1052 File outputFile = new File(getAvatarPath(avatar.getFilename()));
1053 if (outputFile.getParentFile().mkdirs()) {
1054 Log.d(Config.LOGTAG, "created avatar directory");
1055 }
1056 String filename = getAvatarPath(avatar.getFilename());
1057 if (!file.renameTo(new File(filename))) {
1058 Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1059 return false;
1060 }
1061 } else {
1062 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1063 if (!file.delete()) {
1064 Log.d(Config.LOGTAG, "unable to delete temporary file");
1065 }
1066 return false;
1067 }
1068 avatar.size = bytes.length;
1069 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1070 return false;
1071 } finally {
1072 close(os);
1073 }
1074 }
1075 return true;
1076 }
1077
1078 private String getAvatarPath(String avatar) {
1079 return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
1080 }
1081
1082 public Uri getAvatarUri(String avatar) {
1083 return Uri.parse("file:" + getAvatarPath(avatar));
1084 }
1085
1086 public Bitmap cropCenterSquare(Uri image, int size) {
1087 if (image == null) {
1088 return null;
1089 }
1090 InputStream is = null;
1091 try {
1092 BitmapFactory.Options options = new BitmapFactory.Options();
1093 options.inSampleSize = calcSampleSize(image, size);
1094 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1095 if (is == null) {
1096 return null;
1097 }
1098 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1099 if (input == null) {
1100 return null;
1101 } else {
1102 input = rotate(input, getRotation(image));
1103 return cropCenterSquare(input, size);
1104 }
1105 } catch (FileNotFoundException | SecurityException e) {
1106 Log.d(Config.LOGTAG,"unable to open file "+image.toString(), e);
1107 return null;
1108 } finally {
1109 close(is);
1110 }
1111 }
1112
1113 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1114 if (image == null) {
1115 return null;
1116 }
1117 InputStream is = null;
1118 try {
1119 BitmapFactory.Options options = new BitmapFactory.Options();
1120 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1121 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1122 if (is == null) {
1123 return null;
1124 }
1125 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1126 if (source == null) {
1127 return null;
1128 }
1129 int sourceWidth = source.getWidth();
1130 int sourceHeight = source.getHeight();
1131 float xScale = (float) newWidth / sourceWidth;
1132 float yScale = (float) newHeight / sourceHeight;
1133 float scale = Math.max(xScale, yScale);
1134 float scaledWidth = scale * sourceWidth;
1135 float scaledHeight = scale * sourceHeight;
1136 float left = (newWidth - scaledWidth) / 2;
1137 float top = (newHeight - scaledHeight) / 2;
1138
1139 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1140 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1141 Canvas canvas = new Canvas(dest);
1142 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1143 if (source.isRecycled()) {
1144 source.recycle();
1145 }
1146 return dest;
1147 } catch (SecurityException e) {
1148 return null; //android 6.0 with revoked permissions for example
1149 } catch (FileNotFoundException e) {
1150 return null;
1151 } finally {
1152 close(is);
1153 }
1154 }
1155
1156 public Bitmap cropCenterSquare(Bitmap input, int size) {
1157 int w = input.getWidth();
1158 int h = input.getHeight();
1159
1160 float scale = Math.max((float) size / h, (float) size / w);
1161
1162 float outWidth = scale * w;
1163 float outHeight = scale * h;
1164 float left = (size - outWidth) / 2;
1165 float top = (size - outHeight) / 2;
1166 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1167
1168 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1169 Canvas canvas = new Canvas(output);
1170 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1171 if (!input.isRecycled()) {
1172 input.recycle();
1173 }
1174 return output;
1175 }
1176
1177 private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
1178 BitmapFactory.Options options = new BitmapFactory.Options();
1179 options.inJustDecodeBounds = true;
1180 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
1181 return calcSampleSize(options, size);
1182 }
1183
1184 public void updateFileParams(Message message) {
1185 updateFileParams(message, null);
1186 }
1187
1188 public void updateFileParams(Message message, URL url) {
1189 DownloadableFile file = getFile(message);
1190 final String mime = file.getMimeType();
1191 final boolean privateMessage = message.isPrivateMessage();
1192 final boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
1193 final boolean video = mime != null && mime.startsWith("video/");
1194 final boolean audio = mime != null && mime.startsWith("audio/");
1195 final StringBuilder body = new StringBuilder();
1196 if (url != null) {
1197 body.append(url.toString());
1198 }
1199 body.append('|').append(file.getSize());
1200 if (image || video) {
1201 try {
1202 Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
1203 if (dimensions.valid()) {
1204 body.append('|').append(dimensions.width).append('|').append(dimensions.height);
1205 }
1206 } catch (NotAVideoFile notAVideoFile) {
1207 Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
1208 //fall threw
1209 }
1210 } else if (audio) {
1211 body.append("|0|0|").append(getMediaRuntime(file));
1212 }
1213 message.setBody(body.toString());
1214 message.setDeleted(false);
1215 message.setType(privateMessage ? Message.TYPE_PRIVATE_FILE : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
1216 }
1217
1218
1219 private int getMediaRuntime(File file) {
1220 try {
1221 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1222 mediaMetadataRetriever.setDataSource(file.toString());
1223 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1224 } catch (RuntimeException e) {
1225 return 0;
1226 }
1227 }
1228
1229 private Dimensions getImageDimensions(File file) {
1230 BitmapFactory.Options options = new BitmapFactory.Options();
1231 options.inJustDecodeBounds = true;
1232 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1233 int rotation = getRotation(file);
1234 boolean rotated = rotation == 90 || rotation == 270;
1235 int imageHeight = rotated ? options.outWidth : options.outHeight;
1236 int imageWidth = rotated ? options.outHeight : options.outWidth;
1237 return new Dimensions(imageHeight, imageWidth);
1238 }
1239
1240 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1241 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1242 try {
1243 metadataRetriever.setDataSource(file.getAbsolutePath());
1244 } catch (RuntimeException e) {
1245 throw new NotAVideoFile(e);
1246 }
1247 return getVideoDimensions(metadataRetriever);
1248 }
1249
1250 public Bitmap getAvatar(String avatar, int size) {
1251 if (avatar == null) {
1252 return null;
1253 }
1254 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1255 if (bm == null) {
1256 return null;
1257 }
1258 return bm;
1259 }
1260
1261 public boolean isFileAvailable(Message message) {
1262 return getFile(message).exists();
1263 }
1264
1265 private static class Dimensions {
1266 public final int width;
1267 public final int height;
1268
1269 Dimensions(int height, int width) {
1270 this.width = width;
1271 this.height = height;
1272 }
1273
1274 public int getMin() {
1275 return Math.min(width, height);
1276 }
1277
1278 public boolean valid() {
1279 return width > 0 && height > 0;
1280 }
1281 }
1282
1283 private static class NotAVideoFile extends Exception {
1284 public NotAVideoFile(Throwable t) {
1285 super(t);
1286 }
1287
1288 public NotAVideoFile() {
1289 super();
1290 }
1291 }
1292
1293 public class FileCopyException extends Exception {
1294 private static final long serialVersionUID = -1010013599132881427L;
1295 private int resId;
1296
1297 public FileCopyException(int resId) {
1298 this.resId = resId;
1299 }
1300
1301 public int getResId() {
1302 return resId;
1303 }
1304 }
1305}