1package eu.siacs.conversations.persistance;
2
3import android.content.ContentResolver;
4import android.content.Context;
5import android.content.res.AssetFileDescriptor;
6import android.content.res.Resources;
7import android.database.Cursor;
8import android.graphics.Bitmap;
9import android.graphics.BitmapFactory;
10import android.graphics.Canvas;
11import android.graphics.Color;
12import android.graphics.drawable.BitmapDrawable;
13import android.graphics.drawable.Drawable;
14import android.graphics.ImageDecoder;
15import android.graphics.Matrix;
16import android.graphics.Paint;
17import android.graphics.Rect;
18import android.graphics.RectF;
19import android.graphics.pdf.PdfRenderer;
20import android.media.MediaMetadataRetriever;
21import android.media.MediaScannerConnection;
22import android.net.Uri;
23import android.os.Build;
24import android.os.Environment;
25import android.os.ParcelFileDescriptor;
26import android.provider.MediaStore;
27import android.provider.OpenableColumns;
28import android.system.Os;
29import android.system.StructStat;
30import android.util.Base64;
31import android.util.Base64OutputStream;
32import android.util.DisplayMetrics;
33import android.util.Log;
34import android.util.LruCache;
35
36import androidx.annotation.RequiresApi;
37import androidx.annotation.StringRes;
38import androidx.core.content.FileProvider;
39import androidx.documentfile.provider.DocumentFile;
40import androidx.exifinterface.media.ExifInterface;
41
42import com.cheogram.android.BobTransfer;
43
44import com.google.common.base.Strings;
45import com.google.common.collect.ImmutableList;
46import com.google.common.io.ByteStreams;
47
48import com.madebyevan.thumbhash.ThumbHash;
49
50import com.wolt.blurhashkt.BlurHashDecoder;
51
52import java.io.ByteArrayOutputStream;
53import java.io.Closeable;
54import java.io.File;
55import java.io.FileDescriptor;
56import java.io.FileInputStream;
57import java.io.FileNotFoundException;
58import java.io.FileOutputStream;
59import java.io.IOException;
60import java.io.InputStream;
61import java.io.OutputStream;
62import java.net.ServerSocket;
63import java.net.Socket;
64import java.nio.ByteBuffer;
65import java.security.DigestOutputStream;
66import java.security.MessageDigest;
67import java.security.NoSuchAlgorithmException;
68import java.text.SimpleDateFormat;
69import java.util.ArrayList;
70import java.util.Arrays;
71import java.util.Date;
72import java.util.List;
73import java.util.Locale;
74import java.util.UUID;
75
76import io.ipfs.cid.Cid;
77
78import eu.siacs.conversations.Config;
79import eu.siacs.conversations.R;
80import eu.siacs.conversations.entities.DownloadableFile;
81import eu.siacs.conversations.entities.Message;
82import eu.siacs.conversations.services.AttachFileToConversationRunnable;
83import eu.siacs.conversations.services.XmppConnectionService;
84import eu.siacs.conversations.ui.adapter.MediaAdapter;
85import eu.siacs.conversations.ui.util.Attachment;
86import eu.siacs.conversations.utils.CryptoHelper;
87import eu.siacs.conversations.utils.FileUtils;
88import eu.siacs.conversations.utils.FileWriterException;
89import eu.siacs.conversations.utils.MimeUtils;
90import eu.siacs.conversations.xmpp.pep.Avatar;
91import eu.siacs.conversations.xml.Element;
92
93public class FileBackend {
94
95 private static final Object THUMBNAIL_LOCK = new Object();
96
97 private static final SimpleDateFormat IMAGE_DATE_FORMAT =
98 new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
99
100 private static final String FILE_PROVIDER = ".files";
101 private static final float IGNORE_PADDING = 0.15f;
102 private final XmppConnectionService mXmppConnectionService;
103
104 private static final List<String> STORAGE_TYPES;
105
106 static {
107 final ImmutableList.Builder<String> builder =
108 new ImmutableList.Builder<String>()
109 .add(
110 Environment.DIRECTORY_DOWNLOADS,
111 Environment.DIRECTORY_PICTURES,
112 Environment.DIRECTORY_MOVIES);
113 if (Build.VERSION.SDK_INT >= 19) {
114 builder.add(Environment.DIRECTORY_DOCUMENTS);
115 }
116 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
117 builder.add(Environment.DIRECTORY_RECORDINGS);
118 }
119 STORAGE_TYPES = builder.build();
120 }
121
122 public FileBackend(XmppConnectionService service) {
123 this.mXmppConnectionService = service;
124 }
125
126 public static long getFileSize(Context context, Uri uri) {
127 try (final Cursor cursor =
128 context.getContentResolver().query(uri, null, null, null, null)) {
129 if (cursor != null && cursor.moveToFirst()) {
130 final int index = cursor.getColumnIndex(OpenableColumns.SIZE);
131 if (index == -1) {
132 return -1;
133 }
134 return cursor.getLong(index);
135 }
136 return -1;
137 } catch (final Exception ignored) {
138 return -1;
139 }
140 }
141
142 public static boolean allFilesUnderSize(
143 Context context, List<Attachment> attachments, long max) {
144 final boolean compressVideo =
145 !AttachFileToConversationRunnable.getVideoCompression(context)
146 .equals("uncompressed");
147 if (max <= 0) {
148 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
149 return true; // exception to be compatible with HTTP Upload < v0.2
150 }
151 for (Attachment attachment : attachments) {
152 if (attachment.getType() != Attachment.Type.FILE) {
153 continue;
154 }
155 String mime = attachment.getMime();
156 if (mime != null && mime.startsWith("video/") && compressVideo) {
157 try {
158 Dimensions dimensions =
159 FileBackend.getVideoDimensions(context, attachment.getUri());
160 if (dimensions.getMin() > 720) {
161 Log.d(
162 Config.LOGTAG,
163 "do not consider video file with min width larger than 720 for size check");
164 continue;
165 }
166 } catch (NotAVideoFile notAVideoFile) {
167 // ignore and fall through
168 }
169 }
170 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
171 Log.d(
172 Config.LOGTAG,
173 "not all files are under "
174 + max
175 + " bytes. suggesting falling back to jingle");
176 return false;
177 }
178 }
179 return true;
180 }
181
182 public static File getBackupDirectory(final Context context) {
183 final File conversationsDownloadDirectory =
184 new File(
185 Environment.getExternalStoragePublicDirectory(
186 Environment.DIRECTORY_DOWNLOADS),
187 context.getString(R.string.app_name));
188 return new File(conversationsDownloadDirectory, "Backup");
189 }
190
191 public static File getLegacyBackupDirectory(final String app) {
192 final File appDirectory = new File(Environment.getExternalStorageDirectory(), app);
193 return new File(appDirectory, "Backup");
194 }
195
196 private static Bitmap rotate(final Bitmap bitmap, final int degree) {
197 if (degree == 0) {
198 return bitmap;
199 }
200 final int w = bitmap.getWidth();
201 final int h = bitmap.getHeight();
202 final Matrix matrix = new Matrix();
203 matrix.postRotate(degree);
204 final Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
205 if (!bitmap.isRecycled()) {
206 bitmap.recycle();
207 }
208 return result;
209 }
210
211 public static boolean isPathBlacklisted(String path) {
212 final String androidDataPath =
213 Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
214 return path.startsWith(androidDataPath);
215 }
216
217 private static Paint createAntiAliasingPaint() {
218 Paint paint = new Paint();
219 paint.setAntiAlias(true);
220 paint.setFilterBitmap(true);
221 paint.setDither(true);
222 return paint;
223 }
224
225 public static Uri getUriForUri(Context context, Uri uri) {
226 if ("file".equals(uri.getScheme())) {
227 return getUriForFile(context, new File(uri.getPath()));
228 } else {
229 return uri;
230 }
231 }
232
233 public static Uri getUriForFile(Context context, File file) {
234 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
235 try {
236 return FileProvider.getUriForFile(context, getAuthority(context), file);
237 } catch (IllegalArgumentException e) {
238 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
239 throw new SecurityException(e);
240 } else {
241 return Uri.fromFile(file);
242 }
243 }
244 } else {
245 return Uri.fromFile(file);
246 }
247 }
248
249 public static String getAuthority(Context context) {
250 return context.getPackageName() + FILE_PROVIDER;
251 }
252
253 private static boolean hasAlpha(final Bitmap bitmap) {
254 final int w = bitmap.getWidth();
255 final int h = bitmap.getHeight();
256 final int yStep = Math.max(1, w / 100);
257 final int xStep = Math.max(1, h / 100);
258 for (int x = 0; x < w; x += xStep) {
259 for (int y = 0; y < h; y += yStep) {
260 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
261 return true;
262 }
263 }
264 }
265 return false;
266 }
267
268 private static int calcSampleSize(File image, int size) {
269 BitmapFactory.Options options = new BitmapFactory.Options();
270 options.inJustDecodeBounds = true;
271 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
272 return calcSampleSize(options, size);
273 }
274
275 private static int calcSampleSize(BitmapFactory.Options options, int size) {
276 int height = options.outHeight;
277 int width = options.outWidth;
278 int inSampleSize = 1;
279
280 if (height > size || width > size) {
281 int halfHeight = height / 2;
282 int halfWidth = width / 2;
283
284 while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) {
285 inSampleSize *= 2;
286 }
287 }
288 return inSampleSize;
289 }
290
291 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
292 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
293 try {
294 mediaMetadataRetriever.setDataSource(context, uri);
295 } catch (RuntimeException e) {
296 throw new NotAVideoFile(e);
297 }
298 return getVideoDimensions(mediaMetadataRetriever);
299 }
300
301 private static Dimensions getVideoDimensionsOfFrame(
302 MediaMetadataRetriever mediaMetadataRetriever) {
303 Bitmap bitmap = null;
304 try {
305 bitmap = mediaMetadataRetriever.getFrameAtTime();
306 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
307 } catch (Exception e) {
308 return null;
309 } finally {
310 if (bitmap != null) {
311 bitmap.recycle();
312 }
313 }
314 }
315
316 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever)
317 throws NotAVideoFile {
318 String hasVideo =
319 metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
320 if (hasVideo == null) {
321 throw new NotAVideoFile();
322 }
323 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
324 if (dimensions != null) {
325 return dimensions;
326 }
327 final int rotation = extractRotationFromMediaRetriever(metadataRetriever);
328 boolean rotated = rotation == 90 || rotation == 270;
329 int height;
330 try {
331 String h =
332 metadataRetriever.extractMetadata(
333 MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
334 height = Integer.parseInt(h);
335 } catch (Exception e) {
336 height = -1;
337 }
338 int width;
339 try {
340 String w =
341 metadataRetriever.extractMetadata(
342 MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
343 width = Integer.parseInt(w);
344 } catch (Exception e) {
345 width = -1;
346 }
347 try {
348 metadataRetriever.release();
349 } catch (final IOException e) {
350 throw new NotAVideoFile();
351 }
352 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
353 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
354 }
355
356 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
357 String r =
358 metadataRetriever.extractMetadata(
359 MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
360 try {
361 return Integer.parseInt(r);
362 } catch (Exception e) {
363 return 0;
364 }
365 }
366
367 public static void close(final Closeable stream) {
368 if (stream != null) {
369 try {
370 stream.close();
371 } catch (Exception e) {
372 Log.d(Config.LOGTAG, "unable to close stream", e);
373 }
374 }
375 }
376
377 public static void close(final Socket socket) {
378 if (socket != null) {
379 try {
380 socket.close();
381 } catch (IOException e) {
382 Log.d(Config.LOGTAG, "unable to close socket", e);
383 }
384 }
385 }
386
387 public static void close(final ServerSocket socket) {
388 if (socket != null) {
389 try {
390 socket.close();
391 } catch (IOException e) {
392 Log.d(Config.LOGTAG, "unable to close server socket", e);
393 }
394 }
395 }
396
397 public static boolean weOwnFile(final Uri uri) {
398 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
399 return false;
400 } else {
401 return weOwnFileLollipop(uri);
402 }
403 }
404
405 private static boolean weOwnFileLollipop(final Uri uri) {
406 final String path = uri.getPath();
407 if (path == null) {
408 return false;
409 }
410 try {
411 File file = new File(path);
412 FileDescriptor fd =
413 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY)
414 .getFileDescriptor();
415 StructStat st = Os.fstat(fd);
416 return st.st_uid == android.os.Process.myUid();
417 } catch (FileNotFoundException e) {
418 return false;
419 } catch (Exception e) {
420 return true;
421 }
422 }
423
424 public static Uri getMediaUri(Context context, File file) {
425 final String filePath = file.getAbsolutePath();
426 try (final Cursor cursor =
427 context.getContentResolver()
428 .query(
429 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
430 new String[] {MediaStore.Images.Media._ID},
431 MediaStore.Images.Media.DATA + "=? ",
432 new String[] {filePath},
433 null)) {
434 if (cursor != null && cursor.moveToFirst()) {
435 final int id =
436 cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID));
437 return Uri.withAppendedPath(
438 MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
439 } else {
440 return null;
441 }
442 } catch (final Exception e) {
443 return null;
444 }
445 }
446
447 public static void updateFileParams(Message message, String url, long size) {
448 Message.FileParams fileParams = new Message.FileParams();
449 fileParams.url = url;
450 fileParams.size = size;
451 message.setFileParams(fileParams);
452 }
453
454 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
455 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
456 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
457 Drawable drawable = cache.get(key);
458 if (drawable != null || cacheOnly) {
459 return drawDrawable(drawable);
460 }
461 Bitmap bitmap = null;
462 final String mime = attachment.getMime();
463 if ("application/pdf".equals(mime)) {
464 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
465 drawOverlay(
466 bitmap,
467 paintOverlayBlackPdf(bitmap)
468 ? R.drawable.open_pdf_black
469 : R.drawable.open_pdf_white,
470 0.75f);
471 } else if (mime != null && mime.startsWith("video/")) {
472 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
473 drawOverlay(
474 bitmap,
475 paintOverlayBlack(bitmap)
476 ? R.drawable.play_video_black
477 : R.drawable.play_video_white,
478 0.75f);
479 } else {
480 bitmap = cropCenterSquare(attachment.getUri(), size);
481 if (bitmap != null && "image/gif".equals(mime)) {
482 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
483 drawOverlay(
484 withGifOverlay,
485 paintOverlayBlack(withGifOverlay)
486 ? R.drawable.play_gif_black
487 : R.drawable.play_gif_white,
488 1.0f);
489 bitmap.recycle();
490 bitmap = withGifOverlay;
491 }
492 }
493 if (key != null && bitmap != null) {
494 cache.put(key, new BitmapDrawable(bitmap));
495 }
496 return bitmap;
497 }
498
499 public void updateMediaScanner(File file) {
500 updateMediaScanner(file, null);
501 }
502
503 public void updateMediaScanner(File file, final Runnable callback) {
504 MediaScannerConnection.scanFile(
505 mXmppConnectionService,
506 new String[] {file.getAbsolutePath()},
507 null,
508 new MediaScannerConnection.MediaScannerConnectionClient() {
509 @Override
510 public void onMediaScannerConnected() {}
511
512 @Override
513 public void onScanCompleted(String path, Uri uri) {
514 if (callback != null && file.getAbsolutePath().equals(path)) {
515 callback.run();
516 } else {
517 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
518 if (callback != null) {
519 callback.run();
520 }
521 }
522 }
523 });
524 }
525
526 public boolean deleteFile(Message message) {
527 File file = getFile(message);
528 if (file.delete()) {
529 updateMediaScanner(file);
530 return true;
531 } else {
532 return false;
533 }
534 }
535
536 public DownloadableFile getFile(Message message) {
537 return getFile(message, true);
538 }
539
540 public DownloadableFile getFileForPath(String path) {
541 return getFileForPath(
542 path,
543 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
544 }
545
546 private DownloadableFile getFileForPath(final String path, final String mime) {
547 if (path.startsWith("/")) {
548 return new DownloadableFile(path);
549 } else {
550 return getLegacyFileForFilename(path, mime);
551 }
552 }
553
554 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
555 if (Strings.isNullOrEmpty(mime)) {
556 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
557 } else if (mime.startsWith("image/")) {
558 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
559 } else if (mime.startsWith("video/")) {
560 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
561 } else {
562 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
563 }
564 }
565
566 public boolean isInternalFile(final File file) {
567 final File internalFile = getFileForPath(file.getName());
568 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
569 }
570
571 public DownloadableFile getFile(Message message, boolean decrypted) {
572 final boolean encrypted =
573 !decrypted
574 && (message.getEncryption() == Message.ENCRYPTION_PGP
575 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
576 String path = message.getRelativeFilePath();
577 if (path == null) {
578 path = message.getUuid();
579 }
580 final DownloadableFile file = getFileForPath(path, message.getMimeType());
581 if (encrypted) {
582 return new DownloadableFile(
583 mXmppConnectionService.getCacheDir(),
584 String.format("%s.%s", file.getName(), "pgp"));
585 } else {
586 return file;
587 }
588 }
589
590 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
591 final List<Attachment> attachments = new ArrayList<>();
592 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
593 final String mime =
594 MimeUtils.guessMimeTypeFromExtension(
595 MimeUtils.extractRelevantExtension(relativeFilePath.path));
596 final File file = getFileForPath(relativeFilePath.path, mime);
597 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
598 }
599 return attachments;
600 }
601
602 private File getLegacyStorageLocation(final String type) {
603 if (Config.ONLY_INTERNAL_STORAGE) {
604 return new File(mXmppConnectionService.getFilesDir(), type);
605 } else {
606 final File appDirectory =
607 new File(
608 Environment.getExternalStorageDirectory(),
609 mXmppConnectionService.getString(R.string.app_name));
610 final File appMediaDirectory = new File(appDirectory, "Media");
611 final String locationName =
612 String.format(
613 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
614 return new File(appMediaDirectory, locationName);
615 }
616 }
617
618 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
619 int w = originalBitmap.getWidth();
620 int h = originalBitmap.getHeight();
621 if (w <= 0 || h <= 0) {
622 throw new IOException("Decoded bitmap reported bounds smaller 0");
623 } else if (Math.max(w, h) > size) {
624 int scalledW;
625 int scalledH;
626 if (w <= h) {
627 scalledW = Math.max((int) (w / ((double) h / size)), 1);
628 scalledH = size;
629 } else {
630 scalledW = size;
631 scalledH = Math.max((int) (h / ((double) w / size)), 1);
632 }
633 final Bitmap result =
634 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
635 if (!originalBitmap.isRecycled()) {
636 originalBitmap.recycle();
637 }
638 return result;
639 } else {
640 return originalBitmap;
641 }
642 }
643
644 public boolean useImageAsIs(final Uri uri) {
645 final String path = getOriginalPath(uri);
646 if (path == null || isPathBlacklisted(path)) {
647 return false;
648 }
649 final File file = new File(path);
650 long size = file.length();
651 if (size == 0
652 || size
653 >= mXmppConnectionService
654 .getResources()
655 .getInteger(R.integer.auto_accept_filesize)) {
656 return false;
657 }
658 BitmapFactory.Options options = new BitmapFactory.Options();
659 options.inJustDecodeBounds = true;
660 try {
661 for (Cid cid : calculateCids(uri)) {
662 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
663 }
664 final InputStream inputStream =
665 mXmppConnectionService.getContentResolver().openInputStream(uri);
666 BitmapFactory.decodeStream(inputStream, null, options);
667 close(inputStream);
668 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
669 return false;
670 }
671 return (options.outWidth <= Config.IMAGE_SIZE
672 && options.outHeight <= Config.IMAGE_SIZE
673 && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
674 } catch (final IOException e) {
675 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
676 return false;
677 }
678 }
679
680 public String getOriginalPath(Uri uri) {
681 return FileUtils.getPath(mXmppConnectionService, uri);
682 }
683
684 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
685 Log.d(
686 Config.LOGTAG,
687 "copy file (" + file + ") to " + df);
688 try (final InputStream is = new FileInputStream(file);
689 final OutputStream os =
690 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
691 if (is == null) {
692 throw new FileCopyException(R.string.error_file_not_found);
693 }
694 try {
695 ByteStreams.copy(is, os);
696 os.flush();
697 } catch (IOException e) {
698 throw new FileWriterException(file);
699 }
700 } catch (final FileNotFoundException e) {
701 throw new FileCopyException(R.string.error_file_not_found);
702 } catch (final FileWriterException e) {
703 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
704 } catch (final SecurityException | IllegalStateException e) {
705 throw new FileCopyException(R.string.error_security_exception);
706 } catch (final IOException e) {
707 throw new FileCopyException(R.string.error_io_exception);
708 }
709 }
710
711 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
712 Log.d(
713 Config.LOGTAG,
714 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
715 file.getParentFile().mkdirs();
716 try {
717 file.createNewFile();
718 } catch (IOException e) {
719 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
720 }
721 try (final OutputStream os = new FileOutputStream(file);
722 final InputStream is =
723 mXmppConnectionService.getContentResolver().openInputStream(uri)) {
724 if (is == null) {
725 throw new FileCopyException(R.string.error_file_not_found);
726 }
727 try {
728 ByteStreams.copy(is, os);
729 } catch (IOException e) {
730 throw new FileWriterException(file);
731 }
732 try {
733 os.flush();
734 } catch (IOException e) {
735 throw new FileWriterException(file);
736 }
737 } catch (final FileNotFoundException e) {
738 cleanup(file);
739 throw new FileCopyException(R.string.error_file_not_found);
740 } catch (final FileWriterException e) {
741 cleanup(file);
742 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
743 } catch (final SecurityException | IllegalStateException e) {
744 cleanup(file);
745 throw new FileCopyException(R.string.error_security_exception);
746 } catch (final IOException e) {
747 cleanup(file);
748 throw new FileCopyException(R.string.error_io_exception);
749 }
750 }
751
752 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
753 throws FileCopyException {
754 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
755 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
756 String extension = MimeUtils.guessExtensionFromMimeType(mime);
757 if (extension == null) {
758 Log.d(Config.LOGTAG, "extension from mime type was null");
759 extension = getExtensionFromUri(uri);
760 }
761 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
762 extension = "oga";
763 }
764
765 try {
766 setupRelativeFilePath(message, uri, extension);
767 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
768 final String name = getDisplayNameFromUri(uri);
769 if (name != null) {
770 message.getFileParams().setName(name);
771 }
772 } catch (final XmppConnectionService.BlockedMediaException e) {
773 message.setRelativeFilePath(null);
774 message.setDeleted(true);
775 }
776 }
777
778 private String getDisplayNameFromUri(final Uri uri) {
779 final String[] projection = {OpenableColumns.DISPLAY_NAME};
780 String filename = null;
781 try (final Cursor cursor =
782 mXmppConnectionService
783 .getContentResolver()
784 .query(uri, projection, null, null, null)) {
785 if (cursor != null && cursor.moveToFirst()) {
786 filename = cursor.getString(0);
787 }
788 } catch (final Exception e) {
789 filename = null;
790 }
791 return filename;
792 }
793
794 private String getExtensionFromUri(final Uri uri) {
795 final String[] projection = {MediaStore.MediaColumns.DATA};
796 String filename = null;
797 try (final Cursor cursor =
798 mXmppConnectionService
799 .getContentResolver()
800 .query(uri, projection, null, null, null)) {
801 if (cursor != null && cursor.moveToFirst()) {
802 filename = cursor.getString(0);
803 }
804 } catch (final Exception e) {
805 filename = null;
806 }
807 if (filename == null) {
808 final List<String> segments = uri.getPathSegments();
809 if (segments.size() > 0) {
810 filename = segments.get(segments.size() - 1);
811 }
812 }
813 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
814 return pos > 0 ? filename.substring(pos + 1) : null;
815 }
816
817 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
818 throws FileCopyException, ImageCompressionException {
819 final File parent = file.getParentFile();
820 if (parent != null && parent.mkdirs()) {
821 Log.d(Config.LOGTAG, "created parent directory");
822 }
823 InputStream is = null;
824 OutputStream os = null;
825 try {
826 if (!file.exists() && !file.createNewFile()) {
827 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
828 }
829 is = mXmppConnectionService.getContentResolver().openInputStream(image);
830 if (is == null) {
831 throw new FileCopyException(R.string.error_not_an_image_file);
832 }
833 final Bitmap originalBitmap;
834 final BitmapFactory.Options options = new BitmapFactory.Options();
835 final int inSampleSize = (int) Math.pow(2, sampleSize);
836 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
837 options.inSampleSize = inSampleSize;
838 originalBitmap = BitmapFactory.decodeStream(is, null, options);
839 is.close();
840 if (originalBitmap == null) {
841 throw new ImageCompressionException("Source file was not an image");
842 }
843 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
844 originalBitmap.recycle();
845 throw new ImageCompressionException("Source file had alpha channel");
846 }
847 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
848 final int rotation = getRotation(image);
849 scaledBitmap = rotate(scaledBitmap, rotation);
850 boolean targetSizeReached = false;
851 int quality = Config.IMAGE_QUALITY;
852 final int imageMaxSize =
853 mXmppConnectionService
854 .getResources()
855 .getInteger(R.integer.auto_accept_filesize);
856 while (!targetSizeReached) {
857 os = new FileOutputStream(file);
858 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
859 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
860 if (!success) {
861 throw new FileCopyException(R.string.error_compressing_image);
862 }
863 os.flush();
864 final long fileSize = file.length();
865 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
866 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
867 quality -= 5;
868 }
869 scaledBitmap.recycle();
870 } catch (final FileNotFoundException e) {
871 cleanup(file);
872 throw new FileCopyException(R.string.error_file_not_found);
873 } catch (final IOException e) {
874 cleanup(file);
875 throw new FileCopyException(R.string.error_io_exception);
876 } catch (SecurityException e) {
877 cleanup(file);
878 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
879 } catch (final OutOfMemoryError e) {
880 ++sampleSize;
881 if (sampleSize <= 3) {
882 copyImageToPrivateStorage(file, image, sampleSize);
883 } else {
884 throw new FileCopyException(R.string.error_out_of_memory);
885 }
886 } finally {
887 close(os);
888 close(is);
889 }
890 }
891
892 private static void cleanup(final File file) {
893 try {
894 file.delete();
895 } catch (Exception e) {
896
897 }
898 }
899
900 public void copyImageToPrivateStorage(File file, Uri image)
901 throws FileCopyException, ImageCompressionException {
902 Log.d(
903 Config.LOGTAG,
904 "copy image ("
905 + image.toString()
906 + ") to private storage "
907 + file.getAbsolutePath());
908 copyImageToPrivateStorage(file, image, 0);
909 }
910
911 public void copyImageToPrivateStorage(Message message, Uri image)
912 throws FileCopyException, ImageCompressionException {
913 final String filename;
914 switch (Config.IMAGE_FORMAT) {
915 case JPEG:
916 filename = String.format("%s.%s", message.getUuid(), "jpg");
917 break;
918 case PNG:
919 filename = String.format("%s.%s", message.getUuid(), "png");
920 break;
921 case WEBP:
922 filename = String.format("%s.%s", message.getUuid(), "webp");
923 break;
924 default:
925 throw new IllegalStateException("Unknown image format");
926 }
927 setupRelativeFilePath(message, filename);
928 final File tmp = getFile(message);
929 copyImageToPrivateStorage(tmp, image);
930 final String extension = MimeUtils.extractRelevantExtension(filename);
931 try {
932 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
933 } catch (final FileNotFoundException e) {
934 throw new FileCopyException(R.string.error_file_not_found);
935 } catch (final IOException e) {
936 throw new FileCopyException(R.string.error_io_exception);
937 } catch (final XmppConnectionService.BlockedMediaException e) {
938 tmp.delete();
939 message.setRelativeFilePath(null);
940 message.setDeleted(true);
941 return;
942 }
943 tmp.renameTo(getFile(message));
944 updateFileParams(message, null, false);
945 }
946
947 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
948 try {
949 setupRelativeFilePath(message, mXmppConnectionService.getContentResolver().openInputStream(uri), extension);
950 } catch (final FileNotFoundException e) {
951 throw new FileCopyException(R.string.error_file_not_found);
952 } catch (final IOException e) {
953 throw new FileCopyException(R.string.error_io_exception);
954 }
955 }
956
957 public Cid[] calculateCids(final Uri uri) throws IOException {
958 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
959 }
960
961 public Cid[] calculateCids(final InputStream is) throws IOException {
962 try {
963 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
964 } catch (final NoSuchAlgorithmException e) {
965 throw new AssertionError(e);
966 }
967 }
968
969 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
970 message.setRelativeFilePath(getStorageLocation(is, extension).getAbsolutePath());
971 }
972
973 public void setupRelativeFilePath(final Message message, final String filename) {
974 final String extension = MimeUtils.extractRelevantExtension(filename);
975 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
976 setupRelativeFilePath(message, filename, mime);
977 }
978
979 public File getStorageLocation(final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
980 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
981 Cid[] cids = calculateCids(is);
982 String base = cids[0].toString();
983
984 File file = null;
985 while (file == null || (file.exists() && !file.canRead())) {
986 file = getStorageLocation(String.format("%s.%s", base, extension), mime);
987 base += "_";
988 }
989 for (int i = 0; i < cids.length; i++) {
990 mXmppConnectionService.saveCid(cids[i], file);
991 }
992 return file;
993 }
994
995 public File getStorageLocation(final String filename, final String mime) {
996 final File parentDirectory;
997 if (Strings.isNullOrEmpty(mime)) {
998 parentDirectory =
999 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1000 } else if (mime.startsWith("image/")) {
1001 parentDirectory =
1002 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1003 } else if (mime.startsWith("video/")) {
1004 parentDirectory =
1005 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1006 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1007 parentDirectory =
1008 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1009 } else {
1010 parentDirectory =
1011 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1012 }
1013 final File appDirectory =
1014 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1015 return new File(appDirectory, filename);
1016 }
1017
1018 public static boolean inConversationsDirectory(final Context context, String path) {
1019 final File fileDirectory = new File(path).getParentFile();
1020 for (final String type : STORAGE_TYPES) {
1021 final File typeDirectory =
1022 new File(
1023 Environment.getExternalStoragePublicDirectory(type),
1024 context.getString(R.string.app_name));
1025 if (typeDirectory.equals(fileDirectory)) {
1026 return true;
1027 }
1028 }
1029 return false;
1030 }
1031
1032 public void setupRelativeFilePath(
1033 final Message message, final String filename, final String mime) {
1034 final File file = getStorageLocation(filename, mime);
1035 message.setRelativeFilePath(file.getAbsolutePath());
1036 }
1037
1038 public boolean unusualBounds(final Uri image) {
1039 try {
1040 final BitmapFactory.Options options = new BitmapFactory.Options();
1041 options.inJustDecodeBounds = true;
1042 final InputStream inputStream =
1043 mXmppConnectionService.getContentResolver().openInputStream(image);
1044 BitmapFactory.decodeStream(inputStream, null, options);
1045 close(inputStream);
1046 float ratio = (float) options.outHeight / options.outWidth;
1047 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1048 } catch (final Exception e) {
1049 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1050 return false;
1051 }
1052 }
1053
1054 private int getRotation(final File file) {
1055 try (final InputStream inputStream = new FileInputStream(file)) {
1056 return getRotation(inputStream);
1057 } catch (Exception e) {
1058 return 0;
1059 }
1060 }
1061
1062 private int getRotation(final Uri image) {
1063 try (final InputStream is =
1064 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1065 return is == null ? 0 : getRotation(is);
1066 } catch (final Exception e) {
1067 return 0;
1068 }
1069 }
1070
1071 private static int getRotation(final InputStream inputStream) throws IOException {
1072 final ExifInterface exif = new ExifInterface(inputStream);
1073 final int orientation =
1074 exif.getAttributeInt(
1075 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1076 switch (orientation) {
1077 case ExifInterface.ORIENTATION_ROTATE_180:
1078 return 180;
1079 case ExifInterface.ORIENTATION_ROTATE_90:
1080 return 90;
1081 case ExifInterface.ORIENTATION_ROTATE_270:
1082 return 270;
1083 default:
1084 return 0;
1085 }
1086 }
1087
1088 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1089 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1090 if (thumbs != null && !thumbs.isEmpty()) {
1091 for (Element thumb : thumbs) {
1092 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1093 if (uri.getScheme().equals("data")) {
1094 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1095
1096 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1097 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1098 if (cached != null || cacheOnly) return cached;
1099
1100 byte[] data;
1101 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1102 String[] parts2 = parts[0].split(";", 2);
1103 parts[0] = parts2[0];
1104 data = Base64.decode(parts[1], 0);
1105 } else {
1106 try {
1107 data = parts[1].getBytes("UTF-8");
1108 } catch (final IOException e) {
1109 data = new byte[0];
1110 }
1111 }
1112
1113 if (parts[0].equals("image/blurhash")) {
1114 int width = message.getFileParams().width;
1115 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1116 if (width < 1) width = 1920;
1117
1118 int height = message.getFileParams().height;
1119 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1120 if (height < 1) height = 1080;
1121 Rect r = rectForSize(width, height, size);
1122
1123 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1124 if (blurhash != null) {
1125 cached = new BitmapDrawable(blurhash);
1126 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1127 return cached;
1128 }
1129 } else if (parts[0].equals("image/thumbhash")) {
1130 ThumbHash.Image image;
1131 try {
1132 image = ThumbHash.thumbHashToRGBA(data);
1133 } catch (final Exception e) {
1134 continue;
1135 }
1136 int[] pixels = new int[image.width * image.height];
1137 for (int i = 0; i < pixels.length; i++) {
1138 pixels[i] = Color.argb(image.rgba[(i*4)+3] & 0xff, image.rgba[i*4] & 0xff, image.rgba[(i*4)+1] & 0xff, image.rgba[(i*4)+2] & 0xff);
1139 }
1140 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1141 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1142 return cached;
1143 }
1144 }
1145 }
1146 }
1147
1148 return null;
1149 }
1150
1151 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1152 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1153 DownloadableFile file = getFile(message);
1154 Drawable thumbnail = cache.get(file.getAbsolutePath());
1155 if (thumbnail != null) return thumbnail;
1156
1157 if ((thumbnail == null) && (!cacheOnly)) {
1158 synchronized (THUMBNAIL_LOCK) {
1159 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1160 if (thumbs != null && !thumbs.isEmpty()) {
1161 for (Element thumb : thumbs) {
1162 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1163 if (uri.getScheme().equals("data")) {
1164 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1165 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1166
1167 byte[] data;
1168 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1169 String[] parts2 = parts[0].split(";", 2);
1170 parts[0] = parts2[0];
1171 data = Base64.decode(parts[1], 0);
1172 } else {
1173 data = parts[1].getBytes("UTF-8");
1174 }
1175
1176 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1177 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1178
1179 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1180 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1181 int w = info.getSize().getWidth();
1182 int h = info.getSize().getHeight();
1183 Rect r = rectForSize(w, h, size);
1184 decoder.setTargetSize(r.width(), r.height());
1185 });
1186
1187 if (thumbnail != null && file.getAbsolutePath() != null) {
1188 cache.put(file.getAbsolutePath(), thumbnail);
1189 return thumbnail;
1190 }
1191 } else if (uri.getScheme().equals("cid")) {
1192 Cid cid = BobTransfer.cid(uri);
1193 if (cid == null) continue;
1194 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1195 if (f != null && f.canRead()) {
1196 return getThumbnail(f, res, size, cacheOnly);
1197 }
1198 }
1199 }
1200 }
1201 }
1202 }
1203
1204 return getThumbnail(file, res, size, cacheOnly);
1205 }
1206
1207 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1208 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1209 }
1210
1211 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1212 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1213 Drawable thumbnail = cache.get(cacheKey);
1214 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1215 synchronized (THUMBNAIL_LOCK) {
1216 thumbnail = cache.get(cacheKey);
1217 if (thumbnail != null) {
1218 return thumbnail;
1219 }
1220 final String mime = file.getMimeType();
1221 if ("application/pdf".equals(mime)) {
1222 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1223 } else if (mime.startsWith("video/")) {
1224 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1225 } else {
1226 thumbnail = getImagePreview(file, res, size, mime);
1227 if (thumbnail == null) {
1228 throw new FileNotFoundException();
1229 }
1230 }
1231 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1232 }
1233 }
1234 return thumbnail;
1235 }
1236
1237 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1238 final Drawable drawable = getThumbnail(message, res, size, false);
1239 if (drawable == null) return null;
1240 return drawDrawable(drawable);
1241 }
1242
1243 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1244 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1245 if (drawable == null) return null;
1246 return drawDrawable(drawable);
1247 }
1248
1249 public static Rect rectForSize(int w, int h, int size) {
1250 int scalledW;
1251 int scalledH;
1252 if (w <= h) {
1253 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1254 scalledH = size;
1255 } else {
1256 scalledW = size;
1257 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1258 }
1259
1260 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1261
1262 return new Rect(0, 0, scalledW, scalledH);
1263 }
1264
1265 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1266 if (android.os.Build.VERSION.SDK_INT >= 28) {
1267 ImageDecoder.Source source = ImageDecoder.createSource(file);
1268 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1269 int w = info.getSize().getWidth();
1270 int h = info.getSize().getHeight();
1271 Rect r = rectForSize(w, h, size);
1272 decoder.setTargetSize(r.width(), r.height());
1273 });
1274 } else {
1275 BitmapFactory.Options options = new BitmapFactory.Options();
1276 options.inSampleSize = calcSampleSize(file, size);
1277 Bitmap bitmap = null;
1278 try {
1279 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1280 } catch (OutOfMemoryError e) {
1281 options.inSampleSize *= 2;
1282 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1283 }
1284 if (bitmap == null) return null;
1285
1286 bitmap = resize(bitmap, size);
1287 bitmap = rotate(bitmap, getRotation(file));
1288 if (mime.equals("image/gif")) {
1289 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1290 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1291 bitmap.recycle();
1292 bitmap = withGifOverlay;
1293 }
1294 return new BitmapDrawable(res, bitmap);
1295 }
1296 }
1297
1298 public static Bitmap drawDrawable(Drawable drawable) {
1299 if (drawable == null) return null;
1300
1301 Bitmap bitmap = null;
1302
1303 if (drawable instanceof BitmapDrawable) {
1304 bitmap = ((BitmapDrawable) drawable).getBitmap();
1305 if (bitmap != null) return bitmap;
1306 }
1307
1308 bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
1309 Canvas canvas = new Canvas(bitmap);
1310 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1311 drawable.draw(canvas);
1312 return bitmap;
1313 }
1314
1315 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1316 Bitmap overlay =
1317 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1318 Canvas canvas = new Canvas(bitmap);
1319 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1320 Log.d(
1321 Config.LOGTAG,
1322 "target size overlay: "
1323 + targetSize
1324 + " overlay bitmap size was "
1325 + overlay.getHeight());
1326 float left = (canvas.getWidth() - targetSize) / 2.0f;
1327 float top = (canvas.getHeight() - targetSize) / 2.0f;
1328 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1329 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1330 }
1331
1332 /** https://stackoverflow.com/a/3943023/210897 */
1333 private boolean paintOverlayBlack(final Bitmap bitmap) {
1334 final int h = bitmap.getHeight();
1335 final int w = bitmap.getWidth();
1336 int record = 0;
1337 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1338 for (int x = Math.round(w * IGNORE_PADDING);
1339 x < w - Math.round(w * IGNORE_PADDING);
1340 ++x) {
1341 int pixel = bitmap.getPixel(x, y);
1342 if ((Color.red(pixel) * 0.299
1343 + Color.green(pixel) * 0.587
1344 + Color.blue(pixel) * 0.114)
1345 > 186) {
1346 --record;
1347 } else {
1348 ++record;
1349 }
1350 }
1351 }
1352 return record < 0;
1353 }
1354
1355 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1356 final int h = bitmap.getHeight();
1357 final int w = bitmap.getWidth();
1358 int white = 0;
1359 for (int y = 0; y < h; ++y) {
1360 for (int x = 0; x < w; ++x) {
1361 int pixel = bitmap.getPixel(x, y);
1362 if ((Color.red(pixel) * 0.299
1363 + Color.green(pixel) * 0.587
1364 + Color.blue(pixel) * 0.114)
1365 > 186) {
1366 white++;
1367 }
1368 }
1369 }
1370 return white > (h * w * 0.4f);
1371 }
1372
1373 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1374 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1375 Bitmap frame;
1376 try {
1377 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1378 frame = metadataRetriever.getFrameAtTime(0);
1379 metadataRetriever.release();
1380 return cropCenterSquare(frame, size);
1381 } catch (Exception e) {
1382 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1383 frame.eraseColor(0xff000000);
1384 return frame;
1385 }
1386 }
1387
1388 private Bitmap getVideoPreview(final File file, final int size) {
1389 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1390 Bitmap frame;
1391 try {
1392 metadataRetriever.setDataSource(file.getAbsolutePath());
1393 frame = metadataRetriever.getFrameAtTime(0);
1394 metadataRetriever.release();
1395 frame = resize(frame, size);
1396 } catch (IOException | RuntimeException e) {
1397 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1398 frame.eraseColor(0xff000000);
1399 }
1400 drawOverlay(
1401 frame,
1402 paintOverlayBlack(frame)
1403 ? R.drawable.play_video_black
1404 : R.drawable.play_video_white,
1405 0.75f);
1406 return frame;
1407 }
1408
1409 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1410 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1411 try {
1412 final ParcelFileDescriptor fileDescriptor =
1413 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1414 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1415 drawOverlay(
1416 rendered,
1417 paintOverlayBlackPdf(rendered)
1418 ? R.drawable.open_pdf_black
1419 : R.drawable.open_pdf_white,
1420 0.75f);
1421 return rendered;
1422 } catch (final IOException | SecurityException e) {
1423 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1424 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1425 placeholder.eraseColor(0xff000000);
1426 return placeholder;
1427 }
1428 }
1429
1430 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1431 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1432 try {
1433 ParcelFileDescriptor fileDescriptor =
1434 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1435 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1436 return cropCenterSquare(bitmap, size);
1437 } catch (Exception e) {
1438 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1439 placeholder.eraseColor(0xff000000);
1440 return placeholder;
1441 }
1442 }
1443
1444 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1445 private Bitmap renderPdfDocument(
1446 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1447 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1448 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1449 final Dimensions dimensions =
1450 scalePdfDimensions(
1451 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1452 final Bitmap rendered =
1453 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1454 rendered.eraseColor(0xffffffff);
1455 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1456 page.close();
1457 pdfRenderer.close();
1458 fileDescriptor.close();
1459 return rendered;
1460 }
1461
1462 public Uri getTakePhotoUri() {
1463 final String filename =
1464 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1465 final File directory;
1466 if (Config.ONLY_INTERNAL_STORAGE) {
1467 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1468 } else {
1469 directory =
1470 new File(
1471 Environment.getExternalStoragePublicDirectory(
1472 Environment.DIRECTORY_DCIM),
1473 "Camera");
1474 }
1475 final File file = new File(directory, filename);
1476 file.getParentFile().mkdirs();
1477 return getUriForFile(mXmppConnectionService, file);
1478 }
1479
1480 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1481
1482 final Avatar uncompressAvatar = getUncompressedAvatar(image);
1483 if (uncompressAvatar != null
1484 && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
1485 return uncompressAvatar;
1486 }
1487 if (uncompressAvatar != null) {
1488 Log.d(
1489 Config.LOGTAG,
1490 "uncompressed avatar exceeded char limit by "
1491 + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
1492 }
1493
1494 Bitmap bm = cropCenterSquare(image, size);
1495 if (bm == null) {
1496 return null;
1497 }
1498 if (hasAlpha(bm)) {
1499 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1500 bm.recycle();
1501 bm = cropCenterSquare(image, 96);
1502 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1503 }
1504 return getPepAvatar(bm, format, 100);
1505 }
1506
1507 private Avatar getUncompressedAvatar(Uri uri) {
1508 try {
1509 if (android.os.Build.VERSION.SDK_INT >= 28) {
1510 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1511 int[] size = new int[] { 0, 0 };
1512 boolean[] animated = new boolean[] { false };
1513 String[] mimeType = new String[] { null };
1514 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1515 mimeType[0] = info.getMimeType();
1516 animated[0] = info.isAnimated();
1517 size[0] = info.getSize().getWidth();
1518 size[1] = info.getSize().getHeight();
1519 });
1520
1521 if (animated[0]) {
1522 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1523 if (avatar != null) return avatar;
1524 }
1525
1526 return getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100);
1527 } else {
1528 Bitmap bitmap =
1529 BitmapFactory.decodeStream(
1530 mXmppConnectionService.getContentResolver().openInputStream(uri));
1531 return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
1532 }
1533 } catch (Exception e) {
1534 return null;
1535 }
1536 }
1537
1538 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1539 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1540 if (fd.getLength() > Config.AVATAR_CHAR_LIMIT) return null; // Too big to use raw file
1541
1542 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1543 Base64OutputStream mBase64OutputStream =
1544 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1545 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1546 DigestOutputStream mDigestOutputStream =
1547 new DigestOutputStream(mBase64OutputStream, digest);
1548
1549 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1550 mDigestOutputStream.flush();
1551 mDigestOutputStream.close();
1552
1553 final Avatar avatar = new Avatar();
1554 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1555 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1556 avatar.type = mimeType;
1557 avatar.width = width;
1558 avatar.height = height;
1559 return avatar;
1560 }
1561
1562 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1563 try {
1564 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1565 Base64OutputStream mBase64OutputStream =
1566 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1567 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1568 DigestOutputStream mDigestOutputStream =
1569 new DigestOutputStream(mBase64OutputStream, digest);
1570 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1571 return null;
1572 }
1573 mDigestOutputStream.flush();
1574 mDigestOutputStream.close();
1575 long chars = mByteArrayOutputStream.size();
1576 if (format != Bitmap.CompressFormat.PNG
1577 && quality >= 50
1578 && chars >= Config.AVATAR_CHAR_LIMIT) {
1579 int q = quality - 2;
1580 Log.d(
1581 Config.LOGTAG,
1582 "avatar char length was " + chars + " reducing quality to " + q);
1583 return getPepAvatar(bitmap, format, q);
1584 }
1585 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1586 final Avatar avatar = new Avatar();
1587 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1588 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1589 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1590 avatar.type = "image/webp";
1591 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1592 avatar.type = "image/jpeg";
1593 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1594 avatar.type = "image/png";
1595 }
1596 avatar.width = bitmap.getWidth();
1597 avatar.height = bitmap.getHeight();
1598 return avatar;
1599 } catch (OutOfMemoryError e) {
1600 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1601 return null;
1602 } catch (Exception e) {
1603 return null;
1604 }
1605 }
1606
1607 public Avatar getStoredPepAvatar(String hash) {
1608 if (hash == null) {
1609 return null;
1610 }
1611 Avatar avatar = new Avatar();
1612 final File file = getAvatarFile(hash);
1613 FileInputStream is = null;
1614 try {
1615 avatar.size = file.length();
1616 BitmapFactory.Options options = new BitmapFactory.Options();
1617 options.inJustDecodeBounds = true;
1618 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1619 is = new FileInputStream(file);
1620 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1621 Base64OutputStream mBase64OutputStream =
1622 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1623 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1624 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1625 byte[] buffer = new byte[4096];
1626 int length;
1627 while ((length = is.read(buffer)) > 0) {
1628 os.write(buffer, 0, length);
1629 }
1630 os.flush();
1631 os.close();
1632 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1633 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1634 avatar.height = options.outHeight;
1635 avatar.width = options.outWidth;
1636 avatar.type = options.outMimeType;
1637 return avatar;
1638 } catch (NoSuchAlgorithmException | IOException e) {
1639 return null;
1640 } finally {
1641 close(is);
1642 }
1643 }
1644
1645 public boolean isAvatarCached(Avatar avatar) {
1646 final File file = getAvatarFile(avatar.getFilename());
1647 return file.exists();
1648 }
1649
1650 public boolean save(final Avatar avatar) {
1651 File file;
1652 if (isAvatarCached(avatar)) {
1653 file = getAvatarFile(avatar.getFilename());
1654 avatar.size = file.length();
1655 } else {
1656 file =
1657 new File(
1658 mXmppConnectionService.getCacheDir().getAbsolutePath()
1659 + "/"
1660 + UUID.randomUUID().toString());
1661 if (file.getParentFile().mkdirs()) {
1662 Log.d(Config.LOGTAG, "created cache directory");
1663 }
1664 OutputStream os = null;
1665 try {
1666 if (!file.createNewFile()) {
1667 Log.d(
1668 Config.LOGTAG,
1669 "unable to create temporary file " + file.getAbsolutePath());
1670 }
1671 os = new FileOutputStream(file);
1672 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1673 digest.reset();
1674 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1675 final byte[] bytes = avatar.getImageAsBytes();
1676 mDigestOutputStream.write(bytes);
1677 mDigestOutputStream.flush();
1678 mDigestOutputStream.close();
1679 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1680 if (sha1sum.equals(avatar.sha1sum)) {
1681 final File outputFile = getAvatarFile(avatar.getFilename());
1682 if (outputFile.getParentFile().mkdirs()) {
1683 Log.d(Config.LOGTAG, "created avatar directory");
1684 }
1685 final File avatarFile = getAvatarFile(avatar.getFilename());
1686 if (!file.renameTo(avatarFile)) {
1687 Log.d(
1688 Config.LOGTAG,
1689 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1690 return false;
1691 }
1692 } else {
1693 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1694 if (!file.delete()) {
1695 Log.d(Config.LOGTAG, "unable to delete temporary file");
1696 }
1697 return false;
1698 }
1699 avatar.size = bytes.length;
1700 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1701 return false;
1702 } finally {
1703 close(os);
1704 }
1705 }
1706 return true;
1707 }
1708
1709 public void deleteHistoricAvatarPath() {
1710 delete(getHistoricAvatarPath());
1711 }
1712
1713 private void delete(final File file) {
1714 if (file.isDirectory()) {
1715 final File[] files = file.listFiles();
1716 if (files != null) {
1717 for (final File f : files) {
1718 delete(f);
1719 }
1720 }
1721 }
1722 if (file.delete()) {
1723 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1724 }
1725 }
1726
1727 private File getHistoricAvatarPath() {
1728 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1729 }
1730
1731 public File getAvatarFile(String avatar) {
1732 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1733 }
1734
1735 public Uri getAvatarUri(String avatar) {
1736 return Uri.fromFile(getAvatarFile(avatar));
1737 }
1738
1739 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1740 if (android.os.Build.VERSION.SDK_INT >= 28) {
1741 try {
1742 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1743 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1744 int w = info.getSize().getWidth();
1745 int h = info.getSize().getHeight();
1746 Rect r = rectForSize(w, h, size);
1747 decoder.setTargetSize(r.width(), r.height());
1748
1749 int newSize = Math.min(r.width(), r.height());
1750 int left = (r.width() - newSize) / 2;
1751 int top = (r.height() - newSize) / 2;
1752 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1753 });
1754 } catch (final IOException e) {
1755 return null;
1756 }
1757 } else {
1758 Bitmap bitmap = cropCenterSquare(image, size);
1759 return bitmap == null ? null : new BitmapDrawable(bitmap);
1760 }
1761 }
1762
1763 public Bitmap cropCenterSquare(Uri image, int size) {
1764 if (image == null) {
1765 return null;
1766 }
1767 InputStream is = null;
1768 try {
1769 BitmapFactory.Options options = new BitmapFactory.Options();
1770 options.inSampleSize = calcSampleSize(image, size);
1771 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1772 if (is == null) {
1773 return null;
1774 }
1775 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1776 if (input == null) {
1777 return null;
1778 } else {
1779 input = rotate(input, getRotation(image));
1780 return cropCenterSquare(input, size);
1781 }
1782 } catch (FileNotFoundException | SecurityException e) {
1783 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1784 return null;
1785 } finally {
1786 close(is);
1787 }
1788 }
1789
1790 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1791 if (image == null) {
1792 return null;
1793 }
1794 InputStream is = null;
1795 try {
1796 BitmapFactory.Options options = new BitmapFactory.Options();
1797 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1798 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1799 if (is == null) {
1800 return null;
1801 }
1802 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1803 if (source == null) {
1804 return null;
1805 }
1806 int sourceWidth = source.getWidth();
1807 int sourceHeight = source.getHeight();
1808 float xScale = (float) newWidth / sourceWidth;
1809 float yScale = (float) newHeight / sourceHeight;
1810 float scale = Math.max(xScale, yScale);
1811 float scaledWidth = scale * sourceWidth;
1812 float scaledHeight = scale * sourceHeight;
1813 float left = (newWidth - scaledWidth) / 2;
1814 float top = (newHeight - scaledHeight) / 2;
1815
1816 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1817 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1818 Canvas canvas = new Canvas(dest);
1819 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1820 if (source.isRecycled()) {
1821 source.recycle();
1822 }
1823 return dest;
1824 } catch (SecurityException e) {
1825 return null; // android 6.0 with revoked permissions for example
1826 } catch (FileNotFoundException e) {
1827 return null;
1828 } finally {
1829 close(is);
1830 }
1831 }
1832
1833 public Bitmap cropCenterSquare(Bitmap input, int size) {
1834 int w = input.getWidth();
1835 int h = input.getHeight();
1836
1837 float scale = Math.max((float) size / h, (float) size / w);
1838
1839 float outWidth = scale * w;
1840 float outHeight = scale * h;
1841 float left = (size - outWidth) / 2;
1842 float top = (size - outHeight) / 2;
1843 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1844
1845 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1846 Canvas canvas = new Canvas(output);
1847 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1848 if (!input.isRecycled()) {
1849 input.recycle();
1850 }
1851 return output;
1852 }
1853
1854 private int calcSampleSize(Uri image, int size)
1855 throws FileNotFoundException, SecurityException {
1856 final BitmapFactory.Options options = new BitmapFactory.Options();
1857 options.inJustDecodeBounds = true;
1858 final InputStream inputStream =
1859 mXmppConnectionService.getContentResolver().openInputStream(image);
1860 BitmapFactory.decodeStream(inputStream, null, options);
1861 close(inputStream);
1862 return calcSampleSize(options, size);
1863 }
1864
1865 public void updateFileParams(Message message) {
1866 updateFileParams(message, null);
1867 }
1868
1869 public void updateFileParams(final Message message, final String url) {
1870 updateFileParams(message, url, true);
1871 }
1872
1873 public void updateFileParams(final Message message, String url, boolean updateCids) {
1874 final boolean encrypted =
1875 message.getEncryption() == Message.ENCRYPTION_PGP
1876 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1877 final DownloadableFile file = getFile(message);
1878 final String mime = file.getMimeType();
1879 final boolean privateMessage = message.isPrivateMessage();
1880 final boolean image =
1881 message.getType() == Message.TYPE_IMAGE
1882 || (mime != null && mime.startsWith("image/"));
1883 Message.FileParams fileParams = message.getFileParams();
1884 if (fileParams == null) fileParams = new Message.FileParams();
1885 Cid[] cids = new Cid[0];
1886 try {
1887 cids = calculateCids(new FileInputStream(file));
1888 fileParams.setCids(List.of(cids));
1889 } catch (final IOException | NoSuchAlgorithmException e) { }
1890 if (url == null) {
1891 for (Cid cid : cids) {
1892 url = mXmppConnectionService.getUrlForCid(cid);
1893 if (url != null) {
1894 fileParams.url = url;
1895 break;
1896 }
1897 }
1898 } else {
1899 fileParams.url = url;
1900 }
1901 if (fileParams.getName() == null) fileParams.setName(file.getName());
1902 fileParams.setMediaType(mime);
1903 if (encrypted && !file.exists()) {
1904 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
1905 final DownloadableFile encryptedFile = getFile(message, false);
1906 fileParams.size = encryptedFile.getSize();
1907 } else {
1908 Log.d(Config.LOGTAG, "running updateFileParams");
1909 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
1910 final boolean video = mime != null && mime.startsWith("video/");
1911 final boolean audio = mime != null && mime.startsWith("audio/");
1912 final boolean pdf = "application/pdf".equals(mime);
1913 fileParams.size = file.getSize();
1914 if (ambiguous) {
1915 try {
1916 final Dimensions dimensions = getVideoDimensions(file);
1917 if (dimensions.valid()) {
1918 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
1919 fileParams.width = dimensions.width;
1920 fileParams.height = dimensions.height;
1921 } else {
1922 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1923 fileParams.runtime = getMediaRuntime(file);
1924 }
1925 } catch (final NotAVideoFile e) {
1926 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1927 fileParams.runtime = getMediaRuntime(file);
1928 }
1929 } else if (image || video || pdf) {
1930 try {
1931 final Dimensions dimensions;
1932 if (video) {
1933 dimensions = getVideoDimensions(file);
1934 } else if (pdf) {
1935 dimensions = getPdfDocumentDimensions(file);
1936 } else {
1937 dimensions = getImageDimensions(file);
1938 }
1939 if (dimensions.valid()) {
1940 fileParams.width = dimensions.width;
1941 fileParams.height = dimensions.height;
1942 }
1943 } catch (NotAVideoFile notAVideoFile) {
1944 Log.d(
1945 Config.LOGTAG,
1946 "file with mime type " + file.getMimeType() + " was not a video file");
1947 // fall threw
1948 }
1949 } else if (audio) {
1950 fileParams.runtime = getMediaRuntime(file);
1951 }
1952 try {
1953 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
1954 if (thumb != null) {
1955 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
1956 byte[] rgba = new byte[pixels.length * 4];
1957 try {
1958 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
1959 } catch (final IllegalStateException e) {
1960 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
1961 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
1962 softThumb.recycle();
1963 }
1964 for (int i = 0; i < pixels.length; i++) {
1965 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
1966 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
1967 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
1968 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
1969 }
1970 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
1971 }
1972 } catch (final IOException e) { }
1973 }
1974 message.setFileParams(fileParams);
1975 message.setDeleted(false);
1976 message.setType(
1977 privateMessage
1978 ? Message.TYPE_PRIVATE_FILE
1979 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
1980
1981 if (updateCids) {
1982 try {
1983 for (int i = 0; i < cids.length; i++) {
1984 mXmppConnectionService.saveCid(cids[i], file);
1985 }
1986 } catch (XmppConnectionService.BlockedMediaException e) { }
1987 }
1988 }
1989
1990 private int getMediaRuntime(final File file) {
1991 try {
1992 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1993 mediaMetadataRetriever.setDataSource(file.toString());
1994 final String value =
1995 mediaMetadataRetriever.extractMetadata(
1996 MediaMetadataRetriever.METADATA_KEY_DURATION);
1997 if (Strings.isNullOrEmpty(value)) {
1998 return 0;
1999 }
2000 return Integer.parseInt(value);
2001 } catch (final Exception e) {
2002 return 0;
2003 }
2004 }
2005
2006 private Dimensions getImageDimensions(File file) {
2007 final BitmapFactory.Options options = new BitmapFactory.Options();
2008 options.inJustDecodeBounds = true;
2009 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2010 final int rotation = getRotation(file);
2011 final boolean rotated = rotation == 90 || rotation == 270;
2012 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2013 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2014 return new Dimensions(imageHeight, imageWidth);
2015 }
2016
2017 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
2018 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2019 try {
2020 metadataRetriever.setDataSource(file.getAbsolutePath());
2021 } catch (RuntimeException e) {
2022 throw new NotAVideoFile(e);
2023 }
2024 return getVideoDimensions(metadataRetriever);
2025 }
2026
2027 private Dimensions getPdfDocumentDimensions(final File file) {
2028 final ParcelFileDescriptor fileDescriptor;
2029 try {
2030 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2031 if (fileDescriptor == null) {
2032 return new Dimensions(0, 0);
2033 }
2034 } catch (final FileNotFoundException e) {
2035 return new Dimensions(0, 0);
2036 }
2037 try {
2038 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2039 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2040 final int height = page.getHeight();
2041 final int width = page.getWidth();
2042 page.close();
2043 pdfRenderer.close();
2044 return scalePdfDimensions(new Dimensions(height, width));
2045 } catch (final IOException | SecurityException e) {
2046 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2047 return new Dimensions(0, 0);
2048 }
2049 }
2050
2051 private Dimensions scalePdfDimensions(Dimensions in) {
2052 final DisplayMetrics displayMetrics =
2053 mXmppConnectionService.getResources().getDisplayMetrics();
2054 final int target = (int) (displayMetrics.density * 288);
2055 return scalePdfDimensions(in, target, true);
2056 }
2057
2058 private static Dimensions scalePdfDimensions(
2059 final Dimensions in, final int target, final boolean fit) {
2060 final int w, h;
2061 if (fit == (in.width <= in.height)) {
2062 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2063 h = target;
2064 } else {
2065 w = target;
2066 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2067 }
2068 return new Dimensions(h, w);
2069 }
2070
2071 public Drawable getAvatar(String avatar, int size) {
2072 if (avatar == null) {
2073 return null;
2074 }
2075
2076 if (android.os.Build.VERSION.SDK_INT >= 28) {
2077 try {
2078 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2079 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2080 int w = info.getSize().getWidth();
2081 int h = info.getSize().getHeight();
2082 Rect r = rectForSize(w, h, size);
2083 decoder.setTargetSize(r.width(), r.height());
2084
2085 int newSize = Math.min(r.width(), r.height());
2086 int left = (r.width() - newSize) / 2;
2087 int top = (r.height() - newSize) / 2;
2088 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2089 });
2090 } catch (final IOException e) {
2091 return null;
2092 }
2093 } else {
2094 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2095 return bm == null ? null : new BitmapDrawable(bm);
2096 }
2097 }
2098
2099 private static class Dimensions {
2100 public final int width;
2101 public final int height;
2102
2103 Dimensions(int height, int width) {
2104 this.width = width;
2105 this.height = height;
2106 }
2107
2108 public int getMin() {
2109 return Math.min(width, height);
2110 }
2111
2112 public boolean valid() {
2113 return width > 0 && height > 0;
2114 }
2115 }
2116
2117 private static class NotAVideoFile extends Exception {
2118 public NotAVideoFile(Throwable t) {
2119 super(t);
2120 }
2121
2122 public NotAVideoFile() {
2123 super();
2124 }
2125 }
2126
2127 public static class ImageCompressionException extends Exception {
2128
2129 ImageCompressionException(String message) {
2130 super(message);
2131 }
2132 }
2133
2134 public static class FileCopyException extends Exception {
2135 private final int resId;
2136
2137 private FileCopyException(@StringRes int resId) {
2138 this.resId = resId;
2139 }
2140
2141 public @StringRes int getResId() {
2142 return resId;
2143 }
2144 }
2145}