1package eu.siacs.conversations.persistance;
2
3import android.content.ContentResolver;
4import android.content.Context;
5import android.content.res.Resources;
6import android.database.Cursor;
7import android.graphics.Bitmap;
8import android.graphics.BitmapFactory;
9import android.graphics.Canvas;
10import android.graphics.Color;
11import android.graphics.drawable.BitmapDrawable;
12import android.graphics.drawable.Drawable;
13import android.graphics.ImageDecoder;
14import android.graphics.Matrix;
15import android.graphics.Paint;
16import android.graphics.RectF;
17import android.graphics.pdf.PdfRenderer;
18import android.media.MediaMetadataRetriever;
19import android.media.MediaScannerConnection;
20import android.net.Uri;
21import android.os.Build;
22import android.os.Environment;
23import android.os.ParcelFileDescriptor;
24import android.provider.MediaStore;
25import android.provider.OpenableColumns;
26import android.system.Os;
27import android.system.StructStat;
28import android.util.Base64;
29import android.util.Base64OutputStream;
30import android.util.DisplayMetrics;
31import android.util.Log;
32import android.util.LruCache;
33
34import androidx.annotation.RequiresApi;
35import androidx.annotation.StringRes;
36import androidx.core.content.FileProvider;
37import androidx.exifinterface.media.ExifInterface;
38
39import com.google.common.base.Strings;
40import com.google.common.collect.ImmutableList;
41import com.google.common.io.ByteStreams;
42
43import java.io.ByteArrayOutputStream;
44import java.io.Closeable;
45import java.io.File;
46import java.io.FileDescriptor;
47import java.io.FileInputStream;
48import java.io.FileNotFoundException;
49import java.io.FileOutputStream;
50import java.io.IOException;
51import java.io.InputStream;
52import java.io.OutputStream;
53import java.net.ServerSocket;
54import java.net.Socket;
55import java.security.DigestOutputStream;
56import java.security.MessageDigest;
57import java.security.NoSuchAlgorithmException;
58import java.text.SimpleDateFormat;
59import java.util.ArrayList;
60import java.util.Date;
61import java.util.List;
62import java.util.Locale;
63import java.util.UUID;
64
65import eu.siacs.conversations.Config;
66import eu.siacs.conversations.R;
67import eu.siacs.conversations.entities.DownloadableFile;
68import eu.siacs.conversations.entities.Message;
69import eu.siacs.conversations.services.AttachFileToConversationRunnable;
70import eu.siacs.conversations.services.XmppConnectionService;
71import eu.siacs.conversations.ui.adapter.MediaAdapter;
72import eu.siacs.conversations.ui.util.Attachment;
73import eu.siacs.conversations.utils.CryptoHelper;
74import eu.siacs.conversations.utils.FileUtils;
75import eu.siacs.conversations.utils.FileWriterException;
76import eu.siacs.conversations.utils.MimeUtils;
77import eu.siacs.conversations.xmpp.pep.Avatar;
78
79public class FileBackend {
80
81 private static final Object THUMBNAIL_LOCK = new Object();
82
83 private static final SimpleDateFormat IMAGE_DATE_FORMAT =
84 new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
85
86 private static final String FILE_PROVIDER = ".files";
87 private static final float IGNORE_PADDING = 0.15f;
88 private final XmppConnectionService mXmppConnectionService;
89
90 private static final List<String> STORAGE_TYPES;
91
92 static {
93 final ImmutableList.Builder<String> builder =
94 new ImmutableList.Builder<String>()
95 .add(
96 Environment.DIRECTORY_DOWNLOADS,
97 Environment.DIRECTORY_PICTURES,
98 Environment.DIRECTORY_MOVIES);
99 if (Build.VERSION.SDK_INT >= 19) {
100 builder.add(Environment.DIRECTORY_DOCUMENTS);
101 }
102 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
103 builder.add(Environment.DIRECTORY_RECORDINGS);
104 }
105 STORAGE_TYPES = builder.build();
106 }
107
108 public FileBackend(XmppConnectionService service) {
109 this.mXmppConnectionService = service;
110 }
111
112 public static long getFileSize(Context context, Uri uri) {
113 try (final Cursor cursor =
114 context.getContentResolver().query(uri, null, null, null, null)) {
115 if (cursor != null && cursor.moveToFirst()) {
116 final int index = cursor.getColumnIndex(OpenableColumns.SIZE);
117 if (index == -1) {
118 return -1;
119 }
120 return cursor.getLong(index);
121 }
122 return -1;
123 } catch (final Exception ignored) {
124 return -1;
125 }
126 }
127
128 public static boolean allFilesUnderSize(
129 Context context, List<Attachment> attachments, long max) {
130 final boolean compressVideo =
131 !AttachFileToConversationRunnable.getVideoCompression(context)
132 .equals("uncompressed");
133 if (max <= 0) {
134 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
135 return true; // exception to be compatible with HTTP Upload < v0.2
136 }
137 for (Attachment attachment : attachments) {
138 if (attachment.getType() != Attachment.Type.FILE) {
139 continue;
140 }
141 String mime = attachment.getMime();
142 if (mime != null && mime.startsWith("video/") && compressVideo) {
143 try {
144 Dimensions dimensions =
145 FileBackend.getVideoDimensions(context, attachment.getUri());
146 if (dimensions.getMin() > 720) {
147 Log.d(
148 Config.LOGTAG,
149 "do not consider video file with min width larger than 720 for size check");
150 continue;
151 }
152 } catch (NotAVideoFile notAVideoFile) {
153 // ignore and fall through
154 }
155 }
156 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
157 Log.d(
158 Config.LOGTAG,
159 "not all files are under "
160 + max
161 + " bytes. suggesting falling back to jingle");
162 return false;
163 }
164 }
165 return true;
166 }
167
168 public static File getBackupDirectory(final Context context) {
169 final File conversationsDownloadDirectory =
170 new File(
171 Environment.getExternalStoragePublicDirectory(
172 Environment.DIRECTORY_DOWNLOADS),
173 context.getString(R.string.app_name));
174 return new File(conversationsDownloadDirectory, "Backup");
175 }
176
177 public static File getLegacyBackupDirectory(final String app) {
178 final File appDirectory = new File(Environment.getExternalStorageDirectory(), app);
179 return new File(appDirectory, "Backup");
180 }
181
182 private static Bitmap rotate(final Bitmap bitmap, final int degree) {
183 if (degree == 0) {
184 return bitmap;
185 }
186 final int w = bitmap.getWidth();
187 final int h = bitmap.getHeight();
188 final Matrix matrix = new Matrix();
189 matrix.postRotate(degree);
190 final Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
191 if (!bitmap.isRecycled()) {
192 bitmap.recycle();
193 }
194 return result;
195 }
196
197 public static boolean isPathBlacklisted(String path) {
198 final String androidDataPath =
199 Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
200 return path.startsWith(androidDataPath);
201 }
202
203 private static Paint createAntiAliasingPaint() {
204 Paint paint = new Paint();
205 paint.setAntiAlias(true);
206 paint.setFilterBitmap(true);
207 paint.setDither(true);
208 return paint;
209 }
210
211 public static Uri getUriForUri(Context context, Uri uri) {
212 if ("file".equals(uri.getScheme())) {
213 return getUriForFile(context, new File(uri.getPath()));
214 } else {
215 return uri;
216 }
217 }
218
219 public static Uri getUriForFile(Context context, File file) {
220 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
221 try {
222 return FileProvider.getUriForFile(context, getAuthority(context), file);
223 } catch (IllegalArgumentException e) {
224 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
225 throw new SecurityException(e);
226 } else {
227 return Uri.fromFile(file);
228 }
229 }
230 } else {
231 return Uri.fromFile(file);
232 }
233 }
234
235 public static String getAuthority(Context context) {
236 return context.getPackageName() + FILE_PROVIDER;
237 }
238
239 private static boolean hasAlpha(final Bitmap bitmap) {
240 final int w = bitmap.getWidth();
241 final int h = bitmap.getHeight();
242 final int yStep = Math.max(1, w / 100);
243 final int xStep = Math.max(1, h / 100);
244 for (int x = 0; x < w; x += xStep) {
245 for (int y = 0; y < h; y += yStep) {
246 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
247 return true;
248 }
249 }
250 }
251 return false;
252 }
253
254 private static int calcSampleSize(File image, int size) {
255 BitmapFactory.Options options = new BitmapFactory.Options();
256 options.inJustDecodeBounds = true;
257 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
258 return calcSampleSize(options, size);
259 }
260
261 private static int calcSampleSize(BitmapFactory.Options options, int size) {
262 int height = options.outHeight;
263 int width = options.outWidth;
264 int inSampleSize = 1;
265
266 if (height > size || width > size) {
267 int halfHeight = height / 2;
268 int halfWidth = width / 2;
269
270 while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) {
271 inSampleSize *= 2;
272 }
273 }
274 return inSampleSize;
275 }
276
277 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
278 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
279 try {
280 mediaMetadataRetriever.setDataSource(context, uri);
281 } catch (RuntimeException e) {
282 throw new NotAVideoFile(e);
283 }
284 return getVideoDimensions(mediaMetadataRetriever);
285 }
286
287 private static Dimensions getVideoDimensionsOfFrame(
288 MediaMetadataRetriever mediaMetadataRetriever) {
289 Bitmap bitmap = null;
290 try {
291 bitmap = mediaMetadataRetriever.getFrameAtTime();
292 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
293 } catch (Exception e) {
294 return null;
295 } finally {
296 if (bitmap != null) {
297 bitmap.recycle();
298 }
299 }
300 }
301
302 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever)
303 throws NotAVideoFile {
304 String hasVideo =
305 metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
306 if (hasVideo == null) {
307 throw new NotAVideoFile();
308 }
309 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
310 if (dimensions != null) {
311 return dimensions;
312 }
313 final int rotation = extractRotationFromMediaRetriever(metadataRetriever);
314 boolean rotated = rotation == 90 || rotation == 270;
315 int height;
316 try {
317 String h =
318 metadataRetriever.extractMetadata(
319 MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
320 height = Integer.parseInt(h);
321 } catch (Exception e) {
322 height = -1;
323 }
324 int width;
325 try {
326 String w =
327 metadataRetriever.extractMetadata(
328 MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
329 width = Integer.parseInt(w);
330 } catch (Exception e) {
331 width = -1;
332 }
333 metadataRetriever.release();
334 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
335 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
336 }
337
338 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
339 String r =
340 metadataRetriever.extractMetadata(
341 MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
342 try {
343 return Integer.parseInt(r);
344 } catch (Exception e) {
345 return 0;
346 }
347 }
348
349 public static void close(final Closeable stream) {
350 if (stream != null) {
351 try {
352 stream.close();
353 } catch (Exception e) {
354 Log.d(Config.LOGTAG, "unable to close stream", e);
355 }
356 }
357 }
358
359 public static void close(final Socket socket) {
360 if (socket != null) {
361 try {
362 socket.close();
363 } catch (IOException e) {
364 Log.d(Config.LOGTAG, "unable to close socket", e);
365 }
366 }
367 }
368
369 public static void close(final ServerSocket socket) {
370 if (socket != null) {
371 try {
372 socket.close();
373 } catch (IOException e) {
374 Log.d(Config.LOGTAG, "unable to close server socket", e);
375 }
376 }
377 }
378
379 public static boolean weOwnFile(final Uri uri) {
380 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
381 return false;
382 } else {
383 return weOwnFileLollipop(uri);
384 }
385 }
386
387 private static boolean weOwnFileLollipop(final Uri uri) {
388 final String path = uri.getPath();
389 if (path == null) {
390 return false;
391 }
392 try {
393 File file = new File(path);
394 FileDescriptor fd =
395 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY)
396 .getFileDescriptor();
397 StructStat st = Os.fstat(fd);
398 return st.st_uid == android.os.Process.myUid();
399 } catch (FileNotFoundException e) {
400 return false;
401 } catch (Exception e) {
402 return true;
403 }
404 }
405
406 public static Uri getMediaUri(Context context, File file) {
407 final String filePath = file.getAbsolutePath();
408 try (final Cursor cursor =
409 context.getContentResolver()
410 .query(
411 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
412 new String[] {MediaStore.Images.Media._ID},
413 MediaStore.Images.Media.DATA + "=? ",
414 new String[] {filePath},
415 null)) {
416 if (cursor != null && cursor.moveToFirst()) {
417 final int id =
418 cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID));
419 return Uri.withAppendedPath(
420 MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
421 } else {
422 return null;
423 }
424 } catch (final Exception e) {
425 return null;
426 }
427 }
428
429 public static void updateFileParams(Message message, String url, long size) {
430 Message.FileParams fileParams = new Message.FileParams();
431 fileParams.url = url;
432 fileParams.size = size;
433 message.setFileParams(fileParams);
434 }
435
436 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
437 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
438 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
439 Bitmap bitmap = cache.get(key);
440 if (bitmap != null || cacheOnly) {
441 return bitmap;
442 }
443 final String mime = attachment.getMime();
444 if ("application/pdf".equals(mime)) {
445 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
446 drawOverlay(
447 bitmap,
448 paintOverlayBlackPdf(bitmap)
449 ? R.drawable.open_pdf_black
450 : R.drawable.open_pdf_white,
451 0.75f);
452 } else if (mime != null && mime.startsWith("video/")) {
453 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
454 drawOverlay(
455 bitmap,
456 paintOverlayBlack(bitmap)
457 ? R.drawable.play_video_black
458 : R.drawable.play_video_white,
459 0.75f);
460 } else {
461 bitmap = cropCenterSquare(attachment.getUri(), size);
462 if (bitmap != null && "image/gif".equals(mime)) {
463 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
464 drawOverlay(
465 withGifOverlay,
466 paintOverlayBlack(withGifOverlay)
467 ? R.drawable.play_gif_black
468 : R.drawable.play_gif_white,
469 1.0f);
470 bitmap.recycle();
471 bitmap = withGifOverlay;
472 }
473 }
474 if (bitmap != null) {
475 cache.put(key, bitmap);
476 }
477 return bitmap;
478 }
479
480 public void updateMediaScanner(File file) {
481 updateMediaScanner(file, null);
482 }
483
484 public void updateMediaScanner(File file, final Runnable callback) {
485 MediaScannerConnection.scanFile(
486 mXmppConnectionService,
487 new String[] {file.getAbsolutePath()},
488 null,
489 new MediaScannerConnection.MediaScannerConnectionClient() {
490 @Override
491 public void onMediaScannerConnected() {}
492
493 @Override
494 public void onScanCompleted(String path, Uri uri) {
495 if (callback != null && file.getAbsolutePath().equals(path)) {
496 callback.run();
497 } else {
498 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
499 if (callback != null) {
500 callback.run();
501 }
502 }
503 }
504 });
505 }
506
507 public boolean deleteFile(Message message) {
508 File file = getFile(message);
509 if (file.delete()) {
510 updateMediaScanner(file);
511 return true;
512 } else {
513 return false;
514 }
515 }
516
517 public DownloadableFile getFile(Message message) {
518 return getFile(message, true);
519 }
520
521 public DownloadableFile getFileForPath(String path) {
522 return getFileForPath(
523 path,
524 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
525 }
526
527 private DownloadableFile getFileForPath(final String path, final String mime) {
528 if (path.startsWith("/")) {
529 return new DownloadableFile(path);
530 } else {
531 return getLegacyFileForFilename(path, mime);
532 }
533 }
534
535 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
536 if (Strings.isNullOrEmpty(mime)) {
537 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
538 } else if (mime.startsWith("image/")) {
539 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
540 } else if (mime.startsWith("video/")) {
541 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
542 } else {
543 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
544 }
545 }
546
547 public boolean isInternalFile(final File file) {
548 final File internalFile = getFileForPath(file.getName());
549 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
550 }
551
552 public DownloadableFile getFile(Message message, boolean decrypted) {
553 final boolean encrypted =
554 !decrypted
555 && (message.getEncryption() == Message.ENCRYPTION_PGP
556 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
557 String path = message.getRelativeFilePath();
558 if (path == null) {
559 path = message.getUuid();
560 }
561 final DownloadableFile file = getFileForPath(path, message.getMimeType());
562 if (encrypted) {
563 return new DownloadableFile(
564 mXmppConnectionService.getCacheDir(),
565 String.format("%s.%s", file.getName(), "pgp"));
566 } else {
567 return file;
568 }
569 }
570
571 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
572 final List<Attachment> attachments = new ArrayList<>();
573 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
574 final String mime =
575 MimeUtils.guessMimeTypeFromExtension(
576 MimeUtils.extractRelevantExtension(relativeFilePath.path));
577 final File file = getFileForPath(relativeFilePath.path, mime);
578 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
579 }
580 return attachments;
581 }
582
583 private File getLegacyStorageLocation(final String type) {
584 if (Config.ONLY_INTERNAL_STORAGE) {
585 return new File(mXmppConnectionService.getFilesDir(), type);
586 } else {
587 final File appDirectory =
588 new File(
589 Environment.getExternalStorageDirectory(),
590 mXmppConnectionService.getString(R.string.app_name));
591 final File appMediaDirectory = new File(appDirectory, "Media");
592 final String locationName =
593 String.format(
594 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
595 return new File(appMediaDirectory, locationName);
596 }
597 }
598
599 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
600 int w = originalBitmap.getWidth();
601 int h = originalBitmap.getHeight();
602 if (w <= 0 || h <= 0) {
603 throw new IOException("Decoded bitmap reported bounds smaller 0");
604 } else if (Math.max(w, h) > size) {
605 int scalledW;
606 int scalledH;
607 if (w <= h) {
608 scalledW = Math.max((int) (w / ((double) h / size)), 1);
609 scalledH = size;
610 } else {
611 scalledW = size;
612 scalledH = Math.max((int) (h / ((double) w / size)), 1);
613 }
614 final Bitmap result =
615 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
616 if (!originalBitmap.isRecycled()) {
617 originalBitmap.recycle();
618 }
619 return result;
620 } else {
621 return originalBitmap;
622 }
623 }
624
625 public boolean useImageAsIs(final Uri uri) {
626 final String path = getOriginalPath(uri);
627 if (path == null || isPathBlacklisted(path)) {
628 return false;
629 }
630 final File file = new File(path);
631 long size = file.length();
632 if (size == 0
633 || size
634 >= mXmppConnectionService
635 .getResources()
636 .getInteger(R.integer.auto_accept_filesize)) {
637 return false;
638 }
639 BitmapFactory.Options options = new BitmapFactory.Options();
640 options.inJustDecodeBounds = true;
641 try {
642 final InputStream inputStream =
643 mXmppConnectionService.getContentResolver().openInputStream(uri);
644 BitmapFactory.decodeStream(inputStream, null, options);
645 close(inputStream);
646 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
647 return false;
648 }
649 return (options.outWidth <= Config.IMAGE_SIZE
650 && options.outHeight <= Config.IMAGE_SIZE
651 && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
652 } catch (FileNotFoundException e) {
653 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
654 return false;
655 }
656 }
657
658 public String getOriginalPath(Uri uri) {
659 return FileUtils.getPath(mXmppConnectionService, uri);
660 }
661
662 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
663 Log.d(
664 Config.LOGTAG,
665 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
666 file.getParentFile().mkdirs();
667 try {
668 file.createNewFile();
669 } catch (IOException e) {
670 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
671 }
672 try (final OutputStream os = new FileOutputStream(file);
673 final InputStream is =
674 mXmppConnectionService.getContentResolver().openInputStream(uri)) {
675 if (is == null) {
676 throw new FileCopyException(R.string.error_file_not_found);
677 }
678 try {
679 ByteStreams.copy(is, os);
680 } catch (IOException e) {
681 throw new FileWriterException(file);
682 }
683 try {
684 os.flush();
685 } catch (IOException e) {
686 throw new FileWriterException(file);
687 }
688 } catch (final FileNotFoundException e) {
689 cleanup(file);
690 throw new FileCopyException(R.string.error_file_not_found);
691 } catch (final FileWriterException e) {
692 cleanup(file);
693 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
694 } catch (final SecurityException e) {
695 cleanup(file);
696 throw new FileCopyException(R.string.error_security_exception);
697 } catch (final IOException e) {
698 cleanup(file);
699 throw new FileCopyException(R.string.error_io_exception);
700 }
701 }
702
703 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
704 throws FileCopyException {
705 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
706 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
707 String extension = MimeUtils.guessExtensionFromMimeType(mime);
708 if (extension == null) {
709 Log.d(Config.LOGTAG, "extension from mime type was null");
710 extension = getExtensionFromUri(uri);
711 }
712 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
713 extension = "oga";
714 }
715 setupRelativeFilePath(message, String.format("%s.%s", message.getUuid(), extension));
716 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
717 }
718
719 private String getExtensionFromUri(final Uri uri) {
720 final String[] projection = {MediaStore.MediaColumns.DATA};
721 String filename = null;
722 try (final Cursor cursor =
723 mXmppConnectionService
724 .getContentResolver()
725 .query(uri, projection, null, null, null)) {
726 if (cursor != null && cursor.moveToFirst()) {
727 filename = cursor.getString(0);
728 }
729 } catch (final Exception e) {
730 filename = null;
731 }
732 if (filename == null) {
733 final List<String> segments = uri.getPathSegments();
734 if (segments.size() > 0) {
735 filename = segments.get(segments.size() - 1);
736 }
737 }
738 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
739 return pos > 0 ? filename.substring(pos + 1) : null;
740 }
741
742 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
743 throws FileCopyException, ImageCompressionException {
744 final File parent = file.getParentFile();
745 if (parent != null && parent.mkdirs()) {
746 Log.d(Config.LOGTAG, "created parent directory");
747 }
748 InputStream is = null;
749 OutputStream os = null;
750 try {
751 if (!file.exists() && !file.createNewFile()) {
752 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
753 }
754 is = mXmppConnectionService.getContentResolver().openInputStream(image);
755 if (is == null) {
756 throw new FileCopyException(R.string.error_not_an_image_file);
757 }
758 final Bitmap originalBitmap;
759 final BitmapFactory.Options options = new BitmapFactory.Options();
760 final int inSampleSize = (int) Math.pow(2, sampleSize);
761 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
762 options.inSampleSize = inSampleSize;
763 originalBitmap = BitmapFactory.decodeStream(is, null, options);
764 is.close();
765 if (originalBitmap == null) {
766 throw new ImageCompressionException("Source file was not an image");
767 }
768 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
769 originalBitmap.recycle();
770 throw new ImageCompressionException("Source file had alpha channel");
771 }
772 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
773 final int rotation = getRotation(image);
774 scaledBitmap = rotate(scaledBitmap, rotation);
775 boolean targetSizeReached = false;
776 int quality = Config.IMAGE_QUALITY;
777 final int imageMaxSize =
778 mXmppConnectionService
779 .getResources()
780 .getInteger(R.integer.auto_accept_filesize);
781 while (!targetSizeReached) {
782 os = new FileOutputStream(file);
783 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
784 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
785 if (!success) {
786 throw new FileCopyException(R.string.error_compressing_image);
787 }
788 os.flush();
789 final long fileSize = file.length();
790 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
791 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
792 quality -= 5;
793 }
794 scaledBitmap.recycle();
795 } catch (final FileNotFoundException e) {
796 cleanup(file);
797 throw new FileCopyException(R.string.error_file_not_found);
798 } catch (final IOException e) {
799 cleanup(file);
800 throw new FileCopyException(R.string.error_io_exception);
801 } catch (SecurityException e) {
802 cleanup(file);
803 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
804 } catch (final OutOfMemoryError e) {
805 ++sampleSize;
806 if (sampleSize <= 3) {
807 copyImageToPrivateStorage(file, image, sampleSize);
808 } else {
809 throw new FileCopyException(R.string.error_out_of_memory);
810 }
811 } finally {
812 close(os);
813 close(is);
814 }
815 }
816
817 private static void cleanup(final File file) {
818 try {
819 file.delete();
820 } catch (Exception e) {
821
822 }
823 }
824
825 public void copyImageToPrivateStorage(File file, Uri image)
826 throws FileCopyException, ImageCompressionException {
827 Log.d(
828 Config.LOGTAG,
829 "copy image ("
830 + image.toString()
831 + ") to private storage "
832 + file.getAbsolutePath());
833 copyImageToPrivateStorage(file, image, 0);
834 }
835
836 public void copyImageToPrivateStorage(Message message, Uri image)
837 throws FileCopyException, ImageCompressionException {
838 final String filename;
839 switch (Config.IMAGE_FORMAT) {
840 case JPEG:
841 filename = String.format("%s.%s", message.getUuid(), "jpg");
842 break;
843 case PNG:
844 filename = String.format("%s.%s", message.getUuid(), "png");
845 break;
846 case WEBP:
847 filename = String.format("%s.%s", message.getUuid(), "webp");
848 break;
849 default:
850 throw new IllegalStateException("Unknown image format");
851 }
852 setupRelativeFilePath(message, filename);
853 copyImageToPrivateStorage(getFile(message), image);
854 updateFileParams(message);
855 }
856
857 public void setupRelativeFilePath(final Message message, final String filename) {
858 final String extension = MimeUtils.extractRelevantExtension(filename);
859 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
860 setupRelativeFilePath(message, filename, mime);
861 }
862
863 public File getStorageLocation(final String filename, final String mime) {
864 final File parentDirectory;
865 if (Strings.isNullOrEmpty(mime)) {
866 parentDirectory =
867 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
868 } else if (mime.startsWith("image/")) {
869 parentDirectory =
870 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
871 } else if (mime.startsWith("video/")) {
872 parentDirectory =
873 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
874 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
875 parentDirectory =
876 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
877 } else {
878 parentDirectory =
879 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
880 }
881 final File appDirectory =
882 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
883 return new File(appDirectory, filename);
884 }
885
886 public static boolean inConversationsDirectory(final Context context, String path) {
887 final File fileDirectory = new File(path).getParentFile();
888 for (final String type : STORAGE_TYPES) {
889 final File typeDirectory =
890 new File(
891 Environment.getExternalStoragePublicDirectory(type),
892 context.getString(R.string.app_name));
893 if (typeDirectory.equals(fileDirectory)) {
894 return true;
895 }
896 }
897 return false;
898 }
899
900 public void setupRelativeFilePath(
901 final Message message, final String filename, final String mime) {
902 final File file = getStorageLocation(filename, mime);
903 message.setRelativeFilePath(file.getAbsolutePath());
904 }
905
906 public boolean unusualBounds(final Uri image) {
907 try {
908 final BitmapFactory.Options options = new BitmapFactory.Options();
909 options.inJustDecodeBounds = true;
910 final InputStream inputStream =
911 mXmppConnectionService.getContentResolver().openInputStream(image);
912 BitmapFactory.decodeStream(inputStream, null, options);
913 close(inputStream);
914 float ratio = (float) options.outHeight / options.outWidth;
915 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
916 } catch (final Exception e) {
917 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
918 return false;
919 }
920 }
921
922 private int getRotation(final File file) {
923 try (final InputStream inputStream = new FileInputStream(file)) {
924 return getRotation(inputStream);
925 } catch (Exception e) {
926 return 0;
927 }
928 }
929
930 private int getRotation(final Uri image) {
931 try (final InputStream is =
932 mXmppConnectionService.getContentResolver().openInputStream(image)) {
933 return is == null ? 0 : getRotation(is);
934 } catch (final Exception e) {
935 return 0;
936 }
937 }
938
939 private static int getRotation(final InputStream inputStream) throws IOException {
940 final ExifInterface exif = new ExifInterface(inputStream);
941 final int orientation =
942 exif.getAttributeInt(
943 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
944 switch (orientation) {
945 case ExifInterface.ORIENTATION_ROTATE_180:
946 return 180;
947 case ExifInterface.ORIENTATION_ROTATE_90:
948 return 90;
949 case ExifInterface.ORIENTATION_ROTATE_270:
950 return 270;
951 default:
952 return 0;
953 }
954 }
955
956 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
957 final String uuid = message.getUuid();
958 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
959 Drawable thumbnail = cache.get(uuid);
960 if ((thumbnail == null) && (!cacheOnly)) {
961 synchronized (THUMBNAIL_LOCK) {
962 thumbnail = cache.get(uuid);
963 if (thumbnail != null) {
964 return thumbnail;
965 }
966 DownloadableFile file = getFile(message);
967 final String mime = file.getMimeType();
968 if ("application/pdf".equals(mime)) {
969 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
970 } else if (mime.startsWith("video/")) {
971 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
972 } else {
973 thumbnail = getImagePreview(file, res, size, mime);
974 if (thumbnail == null) {
975 throw new FileNotFoundException();
976 }
977 }
978 cache.put(uuid, thumbnail);
979 }
980 }
981 return thumbnail;
982 }
983
984 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
985 final Drawable drawable = getThumbnail(message, res, size, false);
986 if (drawable == null) return null;
987 return drawDrawable(drawable);
988 }
989
990 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
991 if (android.os.Build.VERSION.SDK_INT >= 28) {
992 ImageDecoder.Source source = ImageDecoder.createSource(file);
993 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
994 int w = info.getSize().getWidth();
995 int h = info.getSize().getHeight();
996 int scalledW;
997 int scalledH;
998 if (w <= h) {
999 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1000 scalledH = size;
1001 } else {
1002 scalledW = size;
1003 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1004 }
1005 decoder.setTargetSize(scalledW, scalledH);
1006 });
1007 } else {
1008 BitmapFactory.Options options = new BitmapFactory.Options();
1009 options.inSampleSize = calcSampleSize(file, size);
1010 Bitmap bitmap = null;
1011 try {
1012 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1013 } catch (OutOfMemoryError e) {
1014 options.inSampleSize *= 2;
1015 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1016 }
1017 bitmap = resize(bitmap, size);
1018 bitmap = rotate(bitmap, getRotation(file));
1019 if (mime.equals("image/gif")) {
1020 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1021 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1022 bitmap.recycle();
1023 bitmap = withGifOverlay;
1024 }
1025 return new BitmapDrawable(res, bitmap);
1026 }
1027 }
1028
1029 protected Bitmap drawDrawable(Drawable drawable) {
1030 Bitmap bitmap = null;
1031
1032 if (drawable instanceof BitmapDrawable) {
1033 bitmap = ((BitmapDrawable) drawable).getBitmap();
1034 if (bitmap != null) return bitmap;
1035 }
1036
1037 bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
1038 Canvas canvas = new Canvas(bitmap);
1039 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1040 drawable.draw(canvas);
1041 return bitmap;
1042 }
1043
1044 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1045 Bitmap overlay =
1046 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1047 Canvas canvas = new Canvas(bitmap);
1048 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1049 Log.d(
1050 Config.LOGTAG,
1051 "target size overlay: "
1052 + targetSize
1053 + " overlay bitmap size was "
1054 + overlay.getHeight());
1055 float left = (canvas.getWidth() - targetSize) / 2.0f;
1056 float top = (canvas.getHeight() - targetSize) / 2.0f;
1057 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1058 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1059 }
1060
1061 /** https://stackoverflow.com/a/3943023/210897 */
1062 private boolean paintOverlayBlack(final Bitmap bitmap) {
1063 final int h = bitmap.getHeight();
1064 final int w = bitmap.getWidth();
1065 int record = 0;
1066 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1067 for (int x = Math.round(w * IGNORE_PADDING);
1068 x < w - Math.round(w * IGNORE_PADDING);
1069 ++x) {
1070 int pixel = bitmap.getPixel(x, y);
1071 if ((Color.red(pixel) * 0.299
1072 + Color.green(pixel) * 0.587
1073 + Color.blue(pixel) * 0.114)
1074 > 186) {
1075 --record;
1076 } else {
1077 ++record;
1078 }
1079 }
1080 }
1081 return record < 0;
1082 }
1083
1084 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1085 final int h = bitmap.getHeight();
1086 final int w = bitmap.getWidth();
1087 int white = 0;
1088 for (int y = 0; y < h; ++y) {
1089 for (int x = 0; x < w; ++x) {
1090 int pixel = bitmap.getPixel(x, y);
1091 if ((Color.red(pixel) * 0.299
1092 + Color.green(pixel) * 0.587
1093 + Color.blue(pixel) * 0.114)
1094 > 186) {
1095 white++;
1096 }
1097 }
1098 }
1099 return white > (h * w * 0.4f);
1100 }
1101
1102 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1103 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1104 Bitmap frame;
1105 try {
1106 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1107 frame = metadataRetriever.getFrameAtTime(0);
1108 metadataRetriever.release();
1109 return cropCenterSquare(frame, size);
1110 } catch (Exception e) {
1111 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1112 frame.eraseColor(0xff000000);
1113 return frame;
1114 }
1115 }
1116
1117 private Bitmap getVideoPreview(final File file, final int size) {
1118 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1119 Bitmap frame;
1120 try {
1121 metadataRetriever.setDataSource(file.getAbsolutePath());
1122 frame = metadataRetriever.getFrameAtTime(0);
1123 metadataRetriever.release();
1124 frame = resize(frame, size);
1125 } catch (IOException | RuntimeException e) {
1126 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1127 frame.eraseColor(0xff000000);
1128 }
1129 drawOverlay(
1130 frame,
1131 paintOverlayBlack(frame)
1132 ? R.drawable.play_video_black
1133 : R.drawable.play_video_white,
1134 0.75f);
1135 return frame;
1136 }
1137
1138 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1139 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1140 try {
1141 final ParcelFileDescriptor fileDescriptor =
1142 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1143 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1144 drawOverlay(
1145 rendered,
1146 paintOverlayBlackPdf(rendered)
1147 ? R.drawable.open_pdf_black
1148 : R.drawable.open_pdf_white,
1149 0.75f);
1150 return rendered;
1151 } catch (final IOException | SecurityException e) {
1152 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1153 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1154 placeholder.eraseColor(0xff000000);
1155 return placeholder;
1156 }
1157 }
1158
1159 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1160 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1161 try {
1162 ParcelFileDescriptor fileDescriptor =
1163 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1164 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1165 return cropCenterSquare(bitmap, size);
1166 } catch (Exception e) {
1167 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1168 placeholder.eraseColor(0xff000000);
1169 return placeholder;
1170 }
1171 }
1172
1173 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1174 private Bitmap renderPdfDocument(
1175 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1176 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1177 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1178 final Dimensions dimensions =
1179 scalePdfDimensions(
1180 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1181 final Bitmap rendered =
1182 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1183 rendered.eraseColor(0xffffffff);
1184 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1185 page.close();
1186 pdfRenderer.close();
1187 fileDescriptor.close();
1188 return rendered;
1189 }
1190
1191 public Uri getTakePhotoUri() {
1192 final String filename =
1193 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1194 final File directory;
1195 if (Config.ONLY_INTERNAL_STORAGE) {
1196 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1197 } else {
1198 directory =
1199 new File(
1200 Environment.getExternalStoragePublicDirectory(
1201 Environment.DIRECTORY_DCIM),
1202 "Camera");
1203 }
1204 final File file = new File(directory, filename);
1205 file.getParentFile().mkdirs();
1206 return getUriForFile(mXmppConnectionService, file);
1207 }
1208
1209 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1210
1211 final Avatar uncompressAvatar = getUncompressedAvatar(image);
1212 if (uncompressAvatar != null
1213 && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
1214 return uncompressAvatar;
1215 }
1216 if (uncompressAvatar != null) {
1217 Log.d(
1218 Config.LOGTAG,
1219 "uncompressed avatar exceeded char limit by "
1220 + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
1221 }
1222
1223 Bitmap bm = cropCenterSquare(image, size);
1224 if (bm == null) {
1225 return null;
1226 }
1227 if (hasAlpha(bm)) {
1228 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1229 bm.recycle();
1230 bm = cropCenterSquare(image, 96);
1231 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1232 }
1233 return getPepAvatar(bm, format, 100);
1234 }
1235
1236 private Avatar getUncompressedAvatar(Uri uri) {
1237 Bitmap bitmap = null;
1238 try {
1239 bitmap =
1240 BitmapFactory.decodeStream(
1241 mXmppConnectionService.getContentResolver().openInputStream(uri));
1242 return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
1243 } catch (Exception e) {
1244 return null;
1245 } finally {
1246 if (bitmap != null) {
1247 bitmap.recycle();
1248 }
1249 }
1250 }
1251
1252 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1253 try {
1254 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1255 Base64OutputStream mBase64OutputStream =
1256 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1257 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1258 DigestOutputStream mDigestOutputStream =
1259 new DigestOutputStream(mBase64OutputStream, digest);
1260 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1261 return null;
1262 }
1263 mDigestOutputStream.flush();
1264 mDigestOutputStream.close();
1265 long chars = mByteArrayOutputStream.size();
1266 if (format != Bitmap.CompressFormat.PNG
1267 && quality >= 50
1268 && chars >= Config.AVATAR_CHAR_LIMIT) {
1269 int q = quality - 2;
1270 Log.d(
1271 Config.LOGTAG,
1272 "avatar char length was " + chars + " reducing quality to " + q);
1273 return getPepAvatar(bitmap, format, q);
1274 }
1275 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1276 final Avatar avatar = new Avatar();
1277 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1278 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1279 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1280 avatar.type = "image/webp";
1281 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1282 avatar.type = "image/jpeg";
1283 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1284 avatar.type = "image/png";
1285 }
1286 avatar.width = bitmap.getWidth();
1287 avatar.height = bitmap.getHeight();
1288 return avatar;
1289 } catch (OutOfMemoryError e) {
1290 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1291 return null;
1292 } catch (Exception e) {
1293 return null;
1294 }
1295 }
1296
1297 public Avatar getStoredPepAvatar(String hash) {
1298 if (hash == null) {
1299 return null;
1300 }
1301 Avatar avatar = new Avatar();
1302 final File file = getAvatarFile(hash);
1303 FileInputStream is = null;
1304 try {
1305 avatar.size = file.length();
1306 BitmapFactory.Options options = new BitmapFactory.Options();
1307 options.inJustDecodeBounds = true;
1308 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1309 is = new FileInputStream(file);
1310 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1311 Base64OutputStream mBase64OutputStream =
1312 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1313 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1314 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1315 byte[] buffer = new byte[4096];
1316 int length;
1317 while ((length = is.read(buffer)) > 0) {
1318 os.write(buffer, 0, length);
1319 }
1320 os.flush();
1321 os.close();
1322 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1323 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1324 avatar.height = options.outHeight;
1325 avatar.width = options.outWidth;
1326 avatar.type = options.outMimeType;
1327 return avatar;
1328 } catch (NoSuchAlgorithmException | IOException e) {
1329 return null;
1330 } finally {
1331 close(is);
1332 }
1333 }
1334
1335 public boolean isAvatarCached(Avatar avatar) {
1336 final File file = getAvatarFile(avatar.getFilename());
1337 return file.exists();
1338 }
1339
1340 public boolean save(final Avatar avatar) {
1341 File file;
1342 if (isAvatarCached(avatar)) {
1343 file = getAvatarFile(avatar.getFilename());
1344 avatar.size = file.length();
1345 } else {
1346 file =
1347 new File(
1348 mXmppConnectionService.getCacheDir().getAbsolutePath()
1349 + "/"
1350 + UUID.randomUUID().toString());
1351 if (file.getParentFile().mkdirs()) {
1352 Log.d(Config.LOGTAG, "created cache directory");
1353 }
1354 OutputStream os = null;
1355 try {
1356 if (!file.createNewFile()) {
1357 Log.d(
1358 Config.LOGTAG,
1359 "unable to create temporary file " + file.getAbsolutePath());
1360 }
1361 os = new FileOutputStream(file);
1362 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1363 digest.reset();
1364 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1365 final byte[] bytes = avatar.getImageAsBytes();
1366 mDigestOutputStream.write(bytes);
1367 mDigestOutputStream.flush();
1368 mDigestOutputStream.close();
1369 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1370 if (sha1sum.equals(avatar.sha1sum)) {
1371 final File outputFile = getAvatarFile(avatar.getFilename());
1372 if (outputFile.getParentFile().mkdirs()) {
1373 Log.d(Config.LOGTAG, "created avatar directory");
1374 }
1375 final File avatarFile = getAvatarFile(avatar.getFilename());
1376 if (!file.renameTo(avatarFile)) {
1377 Log.d(
1378 Config.LOGTAG,
1379 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1380 return false;
1381 }
1382 } else {
1383 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1384 if (!file.delete()) {
1385 Log.d(Config.LOGTAG, "unable to delete temporary file");
1386 }
1387 return false;
1388 }
1389 avatar.size = bytes.length;
1390 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1391 return false;
1392 } finally {
1393 close(os);
1394 }
1395 }
1396 return true;
1397 }
1398
1399 public void deleteHistoricAvatarPath() {
1400 delete(getHistoricAvatarPath());
1401 }
1402
1403 private void delete(final File file) {
1404 if (file.isDirectory()) {
1405 final File[] files = file.listFiles();
1406 if (files != null) {
1407 for (final File f : files) {
1408 delete(f);
1409 }
1410 }
1411 }
1412 if (file.delete()) {
1413 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1414 }
1415 }
1416
1417 private File getHistoricAvatarPath() {
1418 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1419 }
1420
1421 private File getAvatarFile(String avatar) {
1422 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1423 }
1424
1425 public Uri getAvatarUri(String avatar) {
1426 return Uri.fromFile(getAvatarFile(avatar));
1427 }
1428
1429 public Bitmap cropCenterSquare(Uri image, int size) {
1430 if (image == null) {
1431 return null;
1432 }
1433 InputStream is = null;
1434 try {
1435 BitmapFactory.Options options = new BitmapFactory.Options();
1436 options.inSampleSize = calcSampleSize(image, size);
1437 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1438 if (is == null) {
1439 return null;
1440 }
1441 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1442 if (input == null) {
1443 return null;
1444 } else {
1445 input = rotate(input, getRotation(image));
1446 return cropCenterSquare(input, size);
1447 }
1448 } catch (FileNotFoundException | SecurityException e) {
1449 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1450 return null;
1451 } finally {
1452 close(is);
1453 }
1454 }
1455
1456 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1457 if (image == null) {
1458 return null;
1459 }
1460 InputStream is = null;
1461 try {
1462 BitmapFactory.Options options = new BitmapFactory.Options();
1463 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1464 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1465 if (is == null) {
1466 return null;
1467 }
1468 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1469 if (source == null) {
1470 return null;
1471 }
1472 int sourceWidth = source.getWidth();
1473 int sourceHeight = source.getHeight();
1474 float xScale = (float) newWidth / sourceWidth;
1475 float yScale = (float) newHeight / sourceHeight;
1476 float scale = Math.max(xScale, yScale);
1477 float scaledWidth = scale * sourceWidth;
1478 float scaledHeight = scale * sourceHeight;
1479 float left = (newWidth - scaledWidth) / 2;
1480 float top = (newHeight - scaledHeight) / 2;
1481
1482 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1483 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1484 Canvas canvas = new Canvas(dest);
1485 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1486 if (source.isRecycled()) {
1487 source.recycle();
1488 }
1489 return dest;
1490 } catch (SecurityException e) {
1491 return null; // android 6.0 with revoked permissions for example
1492 } catch (FileNotFoundException e) {
1493 return null;
1494 } finally {
1495 close(is);
1496 }
1497 }
1498
1499 public Bitmap cropCenterSquare(Bitmap input, int size) {
1500 int w = input.getWidth();
1501 int h = input.getHeight();
1502
1503 float scale = Math.max((float) size / h, (float) size / w);
1504
1505 float outWidth = scale * w;
1506 float outHeight = scale * h;
1507 float left = (size - outWidth) / 2;
1508 float top = (size - outHeight) / 2;
1509 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1510
1511 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1512 Canvas canvas = new Canvas(output);
1513 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1514 if (!input.isRecycled()) {
1515 input.recycle();
1516 }
1517 return output;
1518 }
1519
1520 private int calcSampleSize(Uri image, int size)
1521 throws FileNotFoundException, SecurityException {
1522 final BitmapFactory.Options options = new BitmapFactory.Options();
1523 options.inJustDecodeBounds = true;
1524 final InputStream inputStream =
1525 mXmppConnectionService.getContentResolver().openInputStream(image);
1526 BitmapFactory.decodeStream(inputStream, null, options);
1527 close(inputStream);
1528 return calcSampleSize(options, size);
1529 }
1530
1531 public void updateFileParams(Message message) {
1532 updateFileParams(message, null);
1533 }
1534
1535 public void updateFileParams(final Message message, final String url) {
1536 final boolean encrypted =
1537 message.getEncryption() == Message.ENCRYPTION_PGP
1538 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1539 final DownloadableFile file = getFile(message);
1540 final String mime = file.getMimeType();
1541 final boolean privateMessage = message.isPrivateMessage();
1542 final boolean image =
1543 message.getType() == Message.TYPE_IMAGE
1544 || (mime != null && mime.startsWith("image/"));
1545 Message.FileParams fileParams = new Message.FileParams();
1546 if (url != null) {
1547 fileParams.url = url;
1548 }
1549 if (encrypted && !file.exists()) {
1550 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
1551 final DownloadableFile encryptedFile = getFile(message, false);
1552 fileParams.size = encryptedFile.getSize();
1553 } else {
1554 Log.d(Config.LOGTAG, "running updateFileParams");
1555 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
1556 final boolean video = mime != null && mime.startsWith("video/");
1557 final boolean audio = mime != null && mime.startsWith("audio/");
1558 final boolean pdf = "application/pdf".equals(mime);
1559 fileParams.size = file.getSize();
1560 if (ambiguous) {
1561 try {
1562 final Dimensions dimensions = getVideoDimensions(file);
1563 if (dimensions.valid()) {
1564 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
1565 fileParams.width = dimensions.width;
1566 fileParams.height = dimensions.height;
1567 } else {
1568 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1569 fileParams.runtime = getMediaRuntime(file);
1570 }
1571 } catch (final NotAVideoFile e) {
1572 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1573 fileParams.runtime = getMediaRuntime(file);
1574 }
1575 } else if (image || video || pdf) {
1576 try {
1577 final Dimensions dimensions;
1578 if (video) {
1579 dimensions = getVideoDimensions(file);
1580 } else if (pdf) {
1581 dimensions = getPdfDocumentDimensions(file);
1582 } else {
1583 dimensions = getImageDimensions(file);
1584 }
1585 if (dimensions.valid()) {
1586 fileParams.width = dimensions.width;
1587 fileParams.height = dimensions.height;
1588 }
1589 } catch (NotAVideoFile notAVideoFile) {
1590 Log.d(
1591 Config.LOGTAG,
1592 "file with mime type " + file.getMimeType() + " was not a video file");
1593 // fall threw
1594 }
1595 } else if (audio) {
1596 fileParams.runtime = getMediaRuntime(file);
1597 }
1598 }
1599 message.setFileParams(fileParams);
1600 message.setDeleted(false);
1601 message.setType(
1602 privateMessage
1603 ? Message.TYPE_PRIVATE_FILE
1604 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
1605 }
1606
1607 private int getMediaRuntime(final File file) {
1608 try {
1609 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1610 mediaMetadataRetriever.setDataSource(file.toString());
1611 final String value =
1612 mediaMetadataRetriever.extractMetadata(
1613 MediaMetadataRetriever.METADATA_KEY_DURATION);
1614 if (Strings.isNullOrEmpty(value)) {
1615 return 0;
1616 }
1617 return Integer.parseInt(value);
1618 } catch (final IllegalArgumentException e) {
1619 return 0;
1620 }
1621 }
1622
1623 private Dimensions getImageDimensions(File file) {
1624 BitmapFactory.Options options = new BitmapFactory.Options();
1625 options.inJustDecodeBounds = true;
1626 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1627 int rotation = getRotation(file);
1628 boolean rotated = rotation == 90 || rotation == 270;
1629 int imageHeight = rotated ? options.outWidth : options.outHeight;
1630 int imageWidth = rotated ? options.outHeight : options.outWidth;
1631 return new Dimensions(imageHeight, imageWidth);
1632 }
1633
1634 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1635 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1636 try {
1637 metadataRetriever.setDataSource(file.getAbsolutePath());
1638 } catch (RuntimeException e) {
1639 throw new NotAVideoFile(e);
1640 }
1641 return getVideoDimensions(metadataRetriever);
1642 }
1643
1644 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1645 private Dimensions getPdfDocumentDimensions(final File file) {
1646 final ParcelFileDescriptor fileDescriptor;
1647 try {
1648 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1649 if (fileDescriptor == null) {
1650 return new Dimensions(0, 0);
1651 }
1652 } catch (FileNotFoundException e) {
1653 return new Dimensions(0, 0);
1654 }
1655 try {
1656 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1657 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1658 final int height = page.getHeight();
1659 final int width = page.getWidth();
1660 page.close();
1661 pdfRenderer.close();
1662 return scalePdfDimensions(new Dimensions(height, width));
1663 } catch (IOException | SecurityException e) {
1664 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
1665 return new Dimensions(0, 0);
1666 }
1667 }
1668
1669 private Dimensions scalePdfDimensions(Dimensions in) {
1670 final DisplayMetrics displayMetrics =
1671 mXmppConnectionService.getResources().getDisplayMetrics();
1672 final int target = (int) (displayMetrics.density * 288);
1673 return scalePdfDimensions(in, target, true);
1674 }
1675
1676 private static Dimensions scalePdfDimensions(
1677 final Dimensions in, final int target, final boolean fit) {
1678 final int w, h;
1679 if (fit == (in.width <= in.height)) {
1680 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
1681 h = target;
1682 } else {
1683 w = target;
1684 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
1685 }
1686 return new Dimensions(h, w);
1687 }
1688
1689 public Bitmap getAvatar(String avatar, int size) {
1690 if (avatar == null) {
1691 return null;
1692 }
1693 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1694 return bm;
1695 }
1696
1697 private static class Dimensions {
1698 public final int width;
1699 public final int height;
1700
1701 Dimensions(int height, int width) {
1702 this.width = width;
1703 this.height = height;
1704 }
1705
1706 public int getMin() {
1707 return Math.min(width, height);
1708 }
1709
1710 public boolean valid() {
1711 return width > 0 && height > 0;
1712 }
1713 }
1714
1715 private static class NotAVideoFile extends Exception {
1716 public NotAVideoFile(Throwable t) {
1717 super(t);
1718 }
1719
1720 public NotAVideoFile() {
1721 super();
1722 }
1723 }
1724
1725 public static class ImageCompressionException extends Exception {
1726
1727 ImageCompressionException(String message) {
1728 super(message);
1729 }
1730 }
1731
1732 public static class FileCopyException extends Exception {
1733 private final int resId;
1734
1735 private FileCopyException(@StringRes int resId) {
1736 this.resId = resId;
1737 }
1738
1739 public @StringRes int getResId() {
1740 return resId;
1741 }
1742 }
1743}