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.Pair;
34import android.util.Log;
35import android.util.LruCache;
36
37import androidx.annotation.RequiresApi;
38import androidx.annotation.StringRes;
39import androidx.core.content.FileProvider;
40import androidx.documentfile.provider.DocumentFile;
41import androidx.exifinterface.media.ExifInterface;
42
43import com.caverock.androidsvg.SVG;
44import com.caverock.androidsvg.SVGParseException;
45
46import com.cheogram.android.BobTransfer;
47
48import com.google.common.base.Strings;
49import com.google.common.collect.ImmutableList;
50import com.google.common.io.ByteStreams;
51
52import com.madebyevan.thumbhash.ThumbHash;
53
54import com.wolt.blurhashkt.BlurHashDecoder;
55
56import java.io.ByteArrayInputStream;
57import java.io.ByteArrayOutputStream;
58import java.io.Closeable;
59import java.io.File;
60import java.io.FileDescriptor;
61import java.io.FileInputStream;
62import java.io.FileNotFoundException;
63import java.io.FileOutputStream;
64import java.io.IOException;
65import java.io.InputStream;
66import java.io.OutputStream;
67import java.net.ServerSocket;
68import java.net.Socket;
69import java.nio.ByteBuffer;
70import java.security.DigestOutputStream;
71import java.security.MessageDigest;
72import java.security.NoSuchAlgorithmException;
73import java.text.SimpleDateFormat;
74import java.util.ArrayList;
75import java.util.Arrays;
76import java.util.Date;
77import java.util.List;
78import java.util.Locale;
79import java.util.UUID;
80
81import io.ipfs.cid.Cid;
82
83import eu.siacs.conversations.Config;
84import eu.siacs.conversations.R;
85import eu.siacs.conversations.entities.Conversation;
86import eu.siacs.conversations.entities.DownloadableFile;
87import eu.siacs.conversations.entities.Message;
88import eu.siacs.conversations.services.AttachFileToConversationRunnable;
89import eu.siacs.conversations.services.XmppConnectionService;
90import eu.siacs.conversations.ui.adapter.MediaAdapter;
91import eu.siacs.conversations.ui.util.Attachment;
92import eu.siacs.conversations.utils.CryptoHelper;
93import eu.siacs.conversations.utils.FileUtils;
94import eu.siacs.conversations.utils.FileWriterException;
95import eu.siacs.conversations.utils.MimeUtils;
96import eu.siacs.conversations.xmpp.pep.Avatar;
97import eu.siacs.conversations.xml.Element;
98
99public class FileBackend {
100
101 private static final Object THUMBNAIL_LOCK = new Object();
102
103 private static final SimpleDateFormat IMAGE_DATE_FORMAT =
104 new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
105
106 private static final String FILE_PROVIDER = ".files";
107 private static final float IGNORE_PADDING = 0.15f;
108 private final XmppConnectionService mXmppConnectionService;
109
110 private static final List<String> STORAGE_TYPES;
111
112 static {
113 final ImmutableList.Builder<String> builder =
114 new ImmutableList.Builder<String>()
115 .add(
116 Environment.DIRECTORY_DOWNLOADS,
117 Environment.DIRECTORY_PICTURES,
118 Environment.DIRECTORY_MOVIES);
119 if (Build.VERSION.SDK_INT >= 19) {
120 builder.add(Environment.DIRECTORY_DOCUMENTS);
121 }
122 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
123 builder.add(Environment.DIRECTORY_RECORDINGS);
124 }
125 STORAGE_TYPES = builder.build();
126 }
127
128 public FileBackend(XmppConnectionService service) {
129 this.mXmppConnectionService = service;
130 }
131
132 public static long getFileSize(Context context, Uri uri) {
133 try (final Cursor cursor =
134 context.getContentResolver().query(uri, null, null, null, null)) {
135 if (cursor != null && cursor.moveToFirst()) {
136 final int index = cursor.getColumnIndex(OpenableColumns.SIZE);
137 if (index == -1) {
138 return -1;
139 }
140 return cursor.getLong(index);
141 }
142 return -1;
143 } catch (final Exception ignored) {
144 return -1;
145 }
146 }
147
148 public static boolean allFilesUnderSize(
149 Context context, List<Attachment> attachments, long max) {
150 final boolean compressVideo =
151 !AttachFileToConversationRunnable.getVideoCompression(context)
152 .equals("uncompressed");
153 if (max <= 0) {
154 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
155 return true; // exception to be compatible with HTTP Upload < v0.2
156 }
157 for (Attachment attachment : attachments) {
158 if (attachment.getType() != Attachment.Type.FILE) {
159 continue;
160 }
161 String mime = attachment.getMime();
162 if (mime != null && mime.startsWith("video/") && compressVideo) {
163 try {
164 Dimensions dimensions =
165 FileBackend.getVideoDimensions(context, attachment.getUri());
166 if (dimensions.getMin() > 720) {
167 Log.d(
168 Config.LOGTAG,
169 "do not consider video file with min width larger than 720 for size check");
170 continue;
171 }
172 } catch (final IOException | NotAVideoFile e) {
173 // ignore and fall through
174 }
175 }
176 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
177 Log.d(
178 Config.LOGTAG,
179 "not all files are under "
180 + max
181 + " bytes. suggesting falling back to jingle");
182 return false;
183 }
184 }
185 return true;
186 }
187
188 public static File getBackupDirectory(final Context context) {
189 final File conversationsDownloadDirectory =
190 new File(
191 Environment.getExternalStoragePublicDirectory(
192 Environment.DIRECTORY_DOWNLOADS),
193 context.getString(R.string.app_name));
194 return new File(conversationsDownloadDirectory, "Backup");
195 }
196
197 public static File getLegacyBackupDirectory(final String app) {
198 final File appDirectory = new File(Environment.getExternalStorageDirectory(), app);
199 return new File(appDirectory, "Backup");
200 }
201
202 private static Bitmap rotate(final Bitmap bitmap, final int degree) {
203 if (degree == 0) {
204 return bitmap;
205 }
206 final int w = bitmap.getWidth();
207 final int h = bitmap.getHeight();
208 final Matrix matrix = new Matrix();
209 matrix.postRotate(degree);
210 final Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
211 if (!bitmap.isRecycled()) {
212 bitmap.recycle();
213 }
214 return result;
215 }
216
217 public static boolean isPathBlacklisted(String path) {
218 final String androidDataPath =
219 Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
220 final File f = new File(path);
221 return path.startsWith(androidDataPath) || !f.canRead();
222 }
223
224 private static Paint createAntiAliasingPaint() {
225 Paint paint = new Paint();
226 paint.setAntiAlias(true);
227 paint.setFilterBitmap(true);
228 paint.setDither(true);
229 return paint;
230 }
231
232 public static Uri getUriForUri(Context context, Uri uri) {
233 if ("file".equals(uri.getScheme())) {
234 return getUriForFile(context, new File(uri.getPath()));
235 } else {
236 return uri;
237 }
238 }
239
240 public static Uri getUriForFile(Context context, File file) {
241 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
242 try {
243 return FileProvider.getUriForFile(context, getAuthority(context), file);
244 } catch (IllegalArgumentException e) {
245 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
246 throw new SecurityException(e);
247 } else {
248 return Uri.fromFile(file);
249 }
250 }
251 } else {
252 return Uri.fromFile(file);
253 }
254 }
255
256 public static String getAuthority(Context context) {
257 return context.getPackageName() + FILE_PROVIDER;
258 }
259
260 private static boolean hasAlpha(final Bitmap bitmap) {
261 final int w = bitmap.getWidth();
262 final int h = bitmap.getHeight();
263 final int yStep = Math.max(1, w / 100);
264 final int xStep = Math.max(1, h / 100);
265 for (int x = 0; x < w; x += xStep) {
266 for (int y = 0; y < h; y += yStep) {
267 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
268 return true;
269 }
270 }
271 }
272 return false;
273 }
274
275 private static int calcSampleSize(File image, int size) {
276 BitmapFactory.Options options = new BitmapFactory.Options();
277 options.inJustDecodeBounds = true;
278 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
279 return calcSampleSize(options, size);
280 }
281
282 private static int calcSampleSize(BitmapFactory.Options options, int size) {
283 int height = options.outHeight;
284 int width = options.outWidth;
285 int inSampleSize = 1;
286
287 if (height > size || width > size) {
288 int halfHeight = height / 2;
289 int halfWidth = width / 2;
290
291 while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) {
292 inSampleSize *= 2;
293 }
294 }
295 return inSampleSize;
296 }
297
298 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile, IOException {
299 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
300 try {
301 mediaMetadataRetriever.setDataSource(context, uri);
302 } catch (RuntimeException e) {
303 throw new NotAVideoFile(e);
304 }
305 return getVideoDimensions(mediaMetadataRetriever);
306 }
307
308 private static Dimensions getVideoDimensionsOfFrame(
309 MediaMetadataRetriever mediaMetadataRetriever) {
310 Bitmap bitmap = null;
311 try {
312 bitmap = mediaMetadataRetriever.getFrameAtTime();
313 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
314 } catch (Exception e) {
315 return null;
316 } finally {
317 if (bitmap != null) {
318 bitmap.recycle();
319 }
320 }
321 }
322
323 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever)
324 throws NotAVideoFile, IOException {
325 String hasVideo =
326 metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
327 if (hasVideo == null) {
328 throw new NotAVideoFile();
329 }
330 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
331 if (dimensions != null) {
332 return dimensions;
333 }
334 final int rotation = extractRotationFromMediaRetriever(metadataRetriever);
335 boolean rotated = rotation == 90 || rotation == 270;
336 int height;
337 try {
338 String h =
339 metadataRetriever.extractMetadata(
340 MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
341 height = Integer.parseInt(h);
342 } catch (Exception e) {
343 height = -1;
344 }
345 int width;
346 try {
347 String w =
348 metadataRetriever.extractMetadata(
349 MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
350 width = Integer.parseInt(w);
351 } catch (Exception e) {
352 width = -1;
353 }
354 try {
355 metadataRetriever.release();
356 } catch (final IOException e) {
357 throw new NotAVideoFile();
358 }
359 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
360 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
361 }
362
363 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
364 String r =
365 metadataRetriever.extractMetadata(
366 MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
367 try {
368 return Integer.parseInt(r);
369 } catch (Exception e) {
370 return 0;
371 }
372 }
373
374 public static void close(final Closeable stream) {
375 if (stream != null) {
376 try {
377 stream.close();
378 } catch (Exception e) {
379 Log.d(Config.LOGTAG, "unable to close stream", e);
380 }
381 }
382 }
383
384 public static void close(final Socket socket) {
385 if (socket != null) {
386 try {
387 socket.close();
388 } catch (IOException e) {
389 Log.d(Config.LOGTAG, "unable to close socket", e);
390 }
391 }
392 }
393
394 public static void close(final ServerSocket socket) {
395 if (socket != null) {
396 try {
397 socket.close();
398 } catch (IOException e) {
399 Log.d(Config.LOGTAG, "unable to close server socket", e);
400 }
401 }
402 }
403
404 public static boolean dangerousFile(final Uri uri) {
405 if (uri == null || Strings.isNullOrEmpty(uri.getScheme())) {
406 return true;
407 }
408 if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
409 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
410 // On Android 7 (and apps that target 7) it is now longer possible to share files
411 // with a file scheme. By now you should probably not be running apps that target
412 // anything less than 7 any more
413 return true;
414 } else {
415 return isFileOwnedByProcess(uri);
416 }
417 }
418 return false;
419 }
420
421 private static boolean isFileOwnedByProcess(final Uri uri) {
422 final String path = uri.getPath();
423 if (path == null) {
424 return true;
425 }
426 try (final var pfd =
427 ParcelFileDescriptor.open(new File(path), ParcelFileDescriptor.MODE_READ_ONLY)) {
428 final FileDescriptor fd = pfd.getFileDescriptor();
429 final StructStat st = Os.fstat(fd);
430 return st.st_uid == android.os.Process.myUid();
431 } catch (final Exception e) {
432 // when in doubt. better safe than sorry
433 return true;
434 }
435 }
436
437 public static Uri getMediaUri(Context context, File file) {
438 final String filePath = file.getAbsolutePath();
439 try (final Cursor cursor =
440 context.getContentResolver()
441 .query(
442 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
443 new String[] {MediaStore.Images.Media._ID},
444 MediaStore.Images.Media.DATA + "=? ",
445 new String[] {filePath},
446 null)) {
447 if (cursor != null && cursor.moveToFirst()) {
448 final int id =
449 cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID));
450 return Uri.withAppendedPath(
451 MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
452 } else {
453 return null;
454 }
455 } catch (final Exception e) {
456 return null;
457 }
458 }
459
460 public static void updateFileParams(Message message, String url, long size) {
461 Message.FileParams fileParams = new Message.FileParams();
462 fileParams.url = url;
463 fileParams.size = size;
464 message.setFileParams(fileParams);
465 }
466
467 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
468 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
469 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
470 Drawable drawable = cache.get(key);
471 if (drawable != null || cacheOnly) {
472 return drawDrawable(drawable);
473 }
474 Bitmap bitmap = null;
475 final String mime = attachment.getMime();
476 if ("application/pdf".equals(mime)) {
477 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
478 drawOverlay(
479 bitmap,
480 paintOverlayBlackPdf(bitmap)
481 ? R.drawable.open_pdf_black
482 : R.drawable.open_pdf_white,
483 0.75f);
484 } else if (mime != null && mime.startsWith("video/")) {
485 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
486 drawOverlay(
487 bitmap,
488 paintOverlayBlack(bitmap)
489 ? R.drawable.play_video_black
490 : R.drawable.play_video_white,
491 0.75f);
492 } else {
493 bitmap = cropCenterSquare(attachment.getUri(), size);
494 if (bitmap != null && "image/gif".equals(mime)) {
495 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
496 drawOverlay(
497 withGifOverlay,
498 paintOverlayBlack(withGifOverlay)
499 ? R.drawable.play_gif_black
500 : R.drawable.play_gif_white,
501 1.0f);
502 bitmap.recycle();
503 bitmap = withGifOverlay;
504 }
505 }
506 if (key != null && bitmap != null) {
507 cache.put(key, new BitmapDrawable(bitmap));
508 }
509 return bitmap;
510 }
511
512 public void updateMediaScanner(File file) {
513 updateMediaScanner(file, null);
514 }
515
516 public void updateMediaScanner(File file, final Runnable callback) {
517 MediaScannerConnection.scanFile(
518 mXmppConnectionService,
519 new String[] {file.getAbsolutePath()},
520 null,
521 new MediaScannerConnection.MediaScannerConnectionClient() {
522 @Override
523 public void onMediaScannerConnected() {}
524
525 @Override
526 public void onScanCompleted(String path, Uri uri) {
527 if (callback != null && file.getAbsolutePath().equals(path)) {
528 callback.run();
529 } else {
530 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
531 if (callback != null) {
532 callback.run();
533 }
534 }
535 }
536 });
537 }
538
539 public boolean deleteFile(Message message) {
540 File file = getFile(message);
541 if (file.delete()) {
542 message.setDeleted(true);
543 updateMediaScanner(file);
544 return true;
545 } else {
546 return false;
547 }
548 }
549
550 public DownloadableFile getFile(Message message) {
551 return getFile(message, true);
552 }
553
554 public DownloadableFile getFileForPath(String path) {
555 return getFileForPath(
556 path,
557 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
558 }
559
560 private DownloadableFile getFileForPath(final String path, final String mime) {
561 if (path.startsWith("/")) {
562 return new DownloadableFile(path);
563 } else {
564 return getLegacyFileForFilename(path, mime);
565 }
566 }
567
568 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
569 if (Strings.isNullOrEmpty(mime)) {
570 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
571 } else if (mime.startsWith("image/")) {
572 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
573 } else if (mime.startsWith("video/")) {
574 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
575 } else {
576 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
577 }
578 }
579
580 public boolean isInternalFile(final File file) {
581 final File internalFile = getFileForPath(file.getName());
582 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
583 }
584
585 public DownloadableFile getFile(Message message, boolean decrypted) {
586 final boolean encrypted =
587 !decrypted
588 && (message.getEncryption() == Message.ENCRYPTION_PGP
589 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
590 String path = message.getRelativeFilePath();
591 if (path == null) {
592 path = message.getUuid();
593 }
594 final var msgFile = getFileForPath(path, message.getMimeType());
595
596 final DownloadableFile file;
597 if (encrypted) {
598 file = new DownloadableFile(
599 mXmppConnectionService.getCacheDir(),
600 String.format("%s.%s", msgFile.getName(), "pgp"));
601 } else {
602 file = msgFile;
603 }
604
605 try {
606 if (file.exists() && file.toString().startsWith(mXmppConnectionService.getCacheDir().toString())) {
607 java.nio.file.Files.setAttribute(file.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
608 }
609 } catch (final IOException e) {
610 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + file);
611 }
612
613 return file;
614 }
615
616 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
617 final List<Attachment> attachments = new ArrayList<>();
618 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
619 final String mime =
620 MimeUtils.guessMimeTypeFromExtension(
621 MimeUtils.extractRelevantExtension(relativeFilePath.path));
622 final File file = getFileForPath(relativeFilePath.path, mime);
623 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
624 }
625 return attachments;
626 }
627
628 private File getLegacyStorageLocation(final String type) {
629 if (Config.ONLY_INTERNAL_STORAGE) {
630 return new File(mXmppConnectionService.getFilesDir(), type);
631 } else {
632 final File appDirectory =
633 new File(
634 Environment.getExternalStorageDirectory(),
635 mXmppConnectionService.getString(R.string.app_name));
636 final File appMediaDirectory = new File(appDirectory, "Media");
637 final String locationName =
638 String.format(
639 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
640 return new File(appMediaDirectory, locationName);
641 }
642 }
643
644 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
645 int w = originalBitmap.getWidth();
646 int h = originalBitmap.getHeight();
647 if (w <= 0 || h <= 0) {
648 throw new IOException("Decoded bitmap reported bounds smaller 0");
649 } else if (Math.max(w, h) > size) {
650 int scalledW;
651 int scalledH;
652 if (w <= h) {
653 scalledW = Math.max((int) (w / ((double) h / size)), 1);
654 scalledH = size;
655 } else {
656 scalledW = size;
657 scalledH = Math.max((int) (h / ((double) w / size)), 1);
658 }
659 final Bitmap result =
660 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
661 if (!originalBitmap.isRecycled()) {
662 originalBitmap.recycle();
663 }
664 return result;
665 } else {
666 return originalBitmap;
667 }
668 }
669
670 public long getUriSize(final Uri uri) {
671 Cursor cursor = null;
672 try {
673 cursor = mXmppConnectionService.getContentResolver().query(uri, null, null, null, null);
674 if (cursor != null && cursor.moveToFirst()) {
675 int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
676 return cursor.getLong(sizeIndex);
677 }
678 } finally {
679 if (cursor != null) {
680 cursor.close();
681 }
682 }
683 return 0; // Return 0 if the size information is not available
684 }
685
686 public boolean useImageAsIs(final Uri uri) {
687 try {
688 for (Cid cid : calculateCids(uri)) {
689 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
690 }
691
692 long fsize = getUriSize(uri);
693 if (fsize == 0 || fsize >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
694 return false;
695 }
696
697 if (android.os.Build.VERSION.SDK_INT >= 28) {
698 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
699 int[] size = new int[] { 0, 0 };
700 boolean[] animated = new boolean[] { false };
701 String[] mimeType = new String[] { null };
702 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
703 mimeType[0] = info.getMimeType();
704 animated[0] = info.isAnimated();
705 size[0] = info.getSize().getWidth();
706 size[1] = info.getSize().getHeight();
707 });
708
709 return animated[0] || (size[0] <= Config.IMAGE_SIZE && size[1] <= Config.IMAGE_SIZE);
710 }
711
712 BitmapFactory.Options options = new BitmapFactory.Options();
713 options.inJustDecodeBounds = true;
714 final InputStream inputStream =
715 mXmppConnectionService.getContentResolver().openInputStream(uri);
716 BitmapFactory.decodeStream(inputStream, null, options);
717 close(inputStream);
718 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
719 return false;
720 }
721 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE);
722 } catch (final IOException e) {
723 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
724 return false;
725 }
726 }
727
728 public String getOriginalPath(final Uri uri) {
729 return FileUtils.getPath(mXmppConnectionService, uri);
730 }
731
732 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
733 Log.d(
734 Config.LOGTAG,
735 "copy file (" + file + ") to " + df);
736 try (final InputStream is = new FileInputStream(file);
737 final OutputStream os =
738 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
739 if (is == null) {
740 throw new FileCopyException(R.string.error_file_not_found);
741 }
742 try {
743 ByteStreams.copy(is, os);
744 os.flush();
745 } catch (IOException e) {
746 throw new FileWriterException(file);
747 }
748 } catch (final FileNotFoundException e) {
749 throw new FileCopyException(R.string.error_file_not_found);
750 } catch (final FileWriterException e) {
751 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
752 } catch (final SecurityException | IllegalStateException e) {
753 throw new FileCopyException(R.string.error_security_exception);
754 } catch (final IOException e) {
755 throw new FileCopyException(R.string.error_io_exception);
756 }
757 }
758
759 private InputStream openInputStream(Uri uri) throws IOException {
760 if (uri != null && "data".equals(uri.getScheme())) {
761 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
762 byte[] data;
763 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
764 String[] parts2 = parts[0].split(";", 2);
765 parts[0] = parts2[0];
766 data = Base64.decode(parts[1], 0);
767 } else {
768 try {
769 data = parts[1].getBytes("UTF-8");
770 } catch (final IOException e) {
771 data = new byte[0];
772 }
773 }
774 return new ByteArrayInputStream(data);
775 }
776 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
777 if (is == null) throw new FileNotFoundException("File not found");
778 return is;
779 }
780
781 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
782 Log.d(
783 Config.LOGTAG,
784 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
785 file.getParentFile().mkdirs();
786 try {
787 if (!file.createNewFile() && file.length() > 0) {
788 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
789 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
790 }
791 } catch (IOException e) {
792 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
793 }
794 try (final OutputStream os = new FileOutputStream(file);
795 final InputStream is = openInputStream(uri)) {
796 if (is == null) {
797 throw new FileCopyException(R.string.error_file_not_found);
798 }
799 try {
800 ByteStreams.copy(is, os);
801 } catch (IOException e) {
802 throw new FileWriterException(file);
803 }
804 try {
805 os.flush();
806 } catch (IOException e) {
807 throw new FileWriterException(file);
808 }
809 } catch (final FileNotFoundException e) {
810 cleanup(file);
811 throw new FileCopyException(R.string.error_file_not_found);
812 } catch (final FileWriterException e) {
813 cleanup(file);
814 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
815 } catch (final SecurityException | IllegalStateException e) {
816 cleanup(file);
817 throw new FileCopyException(R.string.error_security_exception);
818 } catch (final IOException e) {
819 cleanup(file);
820 throw new FileCopyException(R.string.error_io_exception);
821 }
822 }
823
824 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
825 throws FileCopyException {
826 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
827 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
828 String extension = MimeUtils.guessExtensionFromMimeType(mime);
829 if (extension == null) {
830 Log.d(Config.LOGTAG, "extension from mime type was null");
831 extension = getExtensionFromUri(uri);
832 }
833 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
834 extension = "oga";
835 }
836
837 try {
838 setupRelativeFilePath(message, uri, extension);
839 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
840 final String name = getDisplayNameFromUri(uri);
841 if (name != null) {
842 message.getFileParams().setName(name);
843 }
844 } catch (final XmppConnectionService.BlockedMediaException e) {
845 message.setRelativeFilePath(null);
846 message.setDeleted(true);
847 }
848 }
849
850 private String getDisplayNameFromUri(final Uri uri) {
851 final String[] projection = {OpenableColumns.DISPLAY_NAME};
852 String filename = null;
853 try (final Cursor cursor =
854 mXmppConnectionService
855 .getContentResolver()
856 .query(uri, projection, null, null, null)) {
857 if (cursor != null && cursor.moveToFirst()) {
858 filename = cursor.getString(0);
859 }
860 } catch (final Exception e) {
861 filename = null;
862 }
863 return filename;
864 }
865
866 private String getExtensionFromUri(final Uri uri) {
867 final String[] projection = {MediaStore.MediaColumns.DATA};
868 String filename = null;
869 try (final Cursor cursor =
870 mXmppConnectionService
871 .getContentResolver()
872 .query(uri, projection, null, null, null)) {
873 if (cursor != null && cursor.moveToFirst()) {
874 filename = cursor.getString(0);
875 }
876 } catch (final Exception e) {
877 filename = null;
878 }
879 if (filename == null) {
880 final List<String> segments = uri.getPathSegments();
881 if (segments.size() > 0) {
882 filename = segments.get(segments.size() - 1);
883 }
884 }
885 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
886 return pos > 0 ? filename.substring(pos + 1) : null;
887 }
888
889 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
890 throws FileCopyException, ImageCompressionException {
891 final File parent = file.getParentFile();
892 if (parent != null && parent.mkdirs()) {
893 Log.d(Config.LOGTAG, "created parent directory");
894 }
895 InputStream is = null;
896 OutputStream os = null;
897 try {
898 if (!file.exists() && !file.createNewFile()) {
899 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
900 }
901 is = mXmppConnectionService.getContentResolver().openInputStream(image);
902 if (is == null) {
903 throw new FileCopyException(R.string.error_not_an_image_file);
904 }
905 final Bitmap originalBitmap;
906 final BitmapFactory.Options options = new BitmapFactory.Options();
907 final int inSampleSize = (int) Math.pow(2, sampleSize);
908 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
909 options.inSampleSize = inSampleSize;
910 originalBitmap = BitmapFactory.decodeStream(is, null, options);
911 is.close();
912 if (originalBitmap == null) {
913 throw new ImageCompressionException("Source file was not an image");
914 }
915 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
916 originalBitmap.recycle();
917 throw new ImageCompressionException("Source file had alpha channel");
918 }
919 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
920 final int rotation = getRotation(image);
921 scaledBitmap = rotate(scaledBitmap, rotation);
922 boolean targetSizeReached = false;
923 int quality = Config.IMAGE_QUALITY;
924 final int imageMaxSize =
925 mXmppConnectionService
926 .getResources()
927 .getInteger(R.integer.auto_accept_filesize);
928 while (!targetSizeReached) {
929 os = new FileOutputStream(file);
930 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
931 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
932 if (!success) {
933 throw new FileCopyException(R.string.error_compressing_image);
934 }
935 os.flush();
936 final long fileSize = file.length();
937 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
938 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
939 quality -= 5;
940 }
941 scaledBitmap.recycle();
942 } catch (final FileNotFoundException e) {
943 cleanup(file);
944 throw new FileCopyException(R.string.error_file_not_found);
945 } catch (final IOException e) {
946 cleanup(file);
947 throw new FileCopyException(R.string.error_io_exception);
948 } catch (SecurityException e) {
949 cleanup(file);
950 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
951 } catch (final OutOfMemoryError e) {
952 ++sampleSize;
953 if (sampleSize <= 3) {
954 copyImageToPrivateStorage(file, image, sampleSize);
955 } else {
956 throw new FileCopyException(R.string.error_out_of_memory);
957 }
958 } finally {
959 close(os);
960 close(is);
961 }
962 }
963
964 private static void cleanup(final File file) {
965 try {
966 file.delete();
967 } catch (Exception e) {
968
969 }
970 }
971
972 public void copyImageToPrivateStorage(File file, Uri image)
973 throws FileCopyException, ImageCompressionException {
974 Log.d(
975 Config.LOGTAG,
976 "copy image ("
977 + image.toString()
978 + ") to private storage "
979 + file.getAbsolutePath());
980 copyImageToPrivateStorage(file, image, 0);
981 }
982
983 public void copyImageToPrivateStorage(Message message, Uri image)
984 throws FileCopyException, ImageCompressionException {
985 final String filename;
986 switch (Config.IMAGE_FORMAT) {
987 case JPEG:
988 filename = String.format("%s.%s", message.getUuid(), "jpg");
989 break;
990 case PNG:
991 filename = String.format("%s.%s", message.getUuid(), "png");
992 break;
993 case WEBP:
994 filename = String.format("%s.%s", message.getUuid(), "webp");
995 break;
996 default:
997 throw new IllegalStateException("Unknown image format");
998 }
999 setupRelativeFilePath(message, filename);
1000 final File tmp = getFile(message);
1001 copyImageToPrivateStorage(tmp, image);
1002 final String extension = MimeUtils.extractRelevantExtension(filename);
1003 try {
1004 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
1005 } catch (final FileNotFoundException e) {
1006 throw new FileCopyException(R.string.error_file_not_found);
1007 } catch (final IOException e) {
1008 throw new FileCopyException(R.string.error_io_exception);
1009 } catch (final XmppConnectionService.BlockedMediaException e) {
1010 tmp.delete();
1011 message.setRelativeFilePath(null);
1012 message.setDeleted(true);
1013 return;
1014 }
1015 tmp.renameTo(getFile(message));
1016 updateFileParams(message, null, false);
1017 }
1018
1019 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1020 try {
1021 setupRelativeFilePath(message, openInputStream(uri), extension);
1022 } catch (final FileNotFoundException e) {
1023 throw new FileCopyException(R.string.error_file_not_found);
1024 } catch (final IOException e) {
1025 throw new FileCopyException(R.string.error_io_exception);
1026 }
1027 }
1028
1029 public Cid[] calculateCids(final Uri uri) throws IOException {
1030 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1031 }
1032
1033 public Cid[] calculateCids(final InputStream is) throws IOException {
1034 try {
1035 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1036 } catch (final NoSuchAlgorithmException e) {
1037 throw new AssertionError(e);
1038 }
1039 }
1040
1041 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1042 message.setRelativeFilePath(getStorageLocation(message, is, extension).getAbsolutePath());
1043 }
1044
1045 public void setupRelativeFilePath(final Message message, final String filename) {
1046 final String extension = MimeUtils.extractRelevantExtension(filename);
1047 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1048 setupRelativeFilePath(message, filename, mime);
1049 }
1050
1051 public File getStorageLocation(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1052 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1053 Cid[] cids = calculateCids(is);
1054 String base = cids[0].toString();
1055
1056 File file = null;
1057 while (file == null || (file.exists() && !file.canRead())) {
1058 file = getStorageLocation(message, String.format("%s.%s", base, extension), mime);
1059 base += "_";
1060 }
1061 for (int i = 0; i < cids.length; i++) {
1062 mXmppConnectionService.saveCid(cids[i], file);
1063 }
1064 return file;
1065 }
1066
1067 public File getStorageLocation(final Message message, final String filename, final String mime) {
1068 final File parentDirectory;
1069 if (Strings.isNullOrEmpty(mime)) {
1070 parentDirectory =
1071 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1072 } else if (mime.startsWith("image/")) {
1073 parentDirectory =
1074 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1075 } else if (mime.startsWith("video/")) {
1076 parentDirectory =
1077 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1078 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1079 parentDirectory =
1080 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1081 } else {
1082 parentDirectory =
1083 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1084 }
1085 final File appDirectory =
1086 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1087 if (message == null || message.getStatus() == Message.STATUS_DUMMY || (message.getConversation() instanceof Conversation && ((Conversation) message.getConversation()).storeInCache())) {
1088 final var mediaCache = new File(mXmppConnectionService.getCacheDir(), "/media");
1089 return new File(mediaCache, filename);
1090 } else {
1091 return new File(appDirectory, filename);
1092 }
1093 }
1094
1095 public static boolean inConversationsDirectory(final Context context, String path) {
1096 final File fileDirectory = new File(path).getParentFile();
1097 for (final String type : STORAGE_TYPES) {
1098 final File typeDirectory =
1099 new File(
1100 Environment.getExternalStoragePublicDirectory(type),
1101 context.getString(R.string.app_name));
1102 if (typeDirectory.equals(fileDirectory)) {
1103 return true;
1104 }
1105 }
1106 return false;
1107 }
1108
1109 public void setupRelativeFilePath(
1110 final Message message, final String filename, final String mime) {
1111 final File file = getStorageLocation(message, filename, mime);
1112 message.setRelativeFilePath(file.getAbsolutePath());
1113 }
1114
1115 public boolean unusualBounds(final Uri image) {
1116 try {
1117 final BitmapFactory.Options options = new BitmapFactory.Options();
1118 options.inJustDecodeBounds = true;
1119 final InputStream inputStream =
1120 mXmppConnectionService.getContentResolver().openInputStream(image);
1121 BitmapFactory.decodeStream(inputStream, null, options);
1122 close(inputStream);
1123 float ratio = (float) options.outHeight / options.outWidth;
1124 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1125 } catch (final Exception e) {
1126 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1127 return false;
1128 }
1129 }
1130
1131 private int getRotation(final File file) {
1132 try (final InputStream inputStream = new FileInputStream(file)) {
1133 return getRotation(inputStream);
1134 } catch (Exception e) {
1135 return 0;
1136 }
1137 }
1138
1139 private int getRotation(final Uri image) {
1140 try (final InputStream is =
1141 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1142 return is == null ? 0 : getRotation(is);
1143 } catch (final Exception e) {
1144 return 0;
1145 }
1146 }
1147
1148 private static int getRotation(final InputStream inputStream) throws IOException {
1149 final ExifInterface exif = new ExifInterface(inputStream);
1150 final int orientation =
1151 exif.getAttributeInt(
1152 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1153 switch (orientation) {
1154 case ExifInterface.ORIENTATION_ROTATE_180:
1155 return 180;
1156 case ExifInterface.ORIENTATION_ROTATE_90:
1157 return 90;
1158 case ExifInterface.ORIENTATION_ROTATE_270:
1159 return 270;
1160 default:
1161 return 0;
1162 }
1163 }
1164
1165 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1166 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1167 if (thumbs != null && !thumbs.isEmpty()) {
1168 for (Element thumb : thumbs) {
1169 final var uriS = thumb.getAttribute("uri");
1170 if (uriS == null) continue;
1171 Uri uri = Uri.parse(uriS);
1172 if (uri.getScheme().equals("data")) {
1173 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1174
1175 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1176 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1177 if (cached != null || cacheOnly) return cached;
1178
1179 byte[] data;
1180 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1181 String[] parts2 = parts[0].split(";", 2);
1182 parts[0] = parts2[0];
1183 data = Base64.decode(parts[1], 0);
1184 } else {
1185 try {
1186 data = parts[1].getBytes("UTF-8");
1187 } catch (final IOException e) {
1188 data = new byte[0];
1189 }
1190 }
1191
1192 if (parts[0].equals("image/blurhash")) {
1193 int width = message.getFileParams().width;
1194 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1195 if (width < 1) width = 1920;
1196
1197 int height = message.getFileParams().height;
1198 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1199 if (height < 1) height = 1080;
1200 Rect r = rectForSize(width, height, size);
1201
1202 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1203 if (blurhash != null) {
1204 cached = new BitmapDrawable(blurhash);
1205 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1206 return cached;
1207 }
1208 } else if (parts[0].equals("image/thumbhash")) {
1209 ThumbHash.Image image;
1210 try {
1211 image = ThumbHash.thumbHashToRGBA(data);
1212 } catch (final Exception e) {
1213 continue;
1214 }
1215 int[] pixels = new int[image.width * image.height];
1216 for (int i = 0; i < pixels.length; i++) {
1217 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);
1218 }
1219 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1220 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1221 return cached;
1222 }
1223 }
1224 }
1225 }
1226
1227 return null;
1228 }
1229
1230 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1231 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1232 DownloadableFile file = getFile(message);
1233 Drawable thumbnail = cache.get(file.getAbsolutePath());
1234 if (thumbnail != null) return thumbnail;
1235
1236 if ((thumbnail == null) && (!cacheOnly)) {
1237 synchronized (THUMBNAIL_LOCK) {
1238 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1239 if (thumbs != null && !thumbs.isEmpty()) {
1240 for (Element thumb : thumbs) {
1241 final var uriS = thumb.getAttribute("uri");
1242 if (uriS == null) continue;
1243 Uri uri = Uri.parse(uriS);
1244 if (uri.getScheme().equals("data")) {
1245 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1246 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1247
1248 byte[] data;
1249 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1250 String[] parts2 = parts[0].split(";", 2);
1251 parts[0] = parts2[0];
1252 data = Base64.decode(parts[1], 0);
1253 } else {
1254 data = parts[1].getBytes("UTF-8");
1255 }
1256
1257 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1258 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1259
1260 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1261 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1262 int w = info.getSize().getWidth();
1263 int h = info.getSize().getHeight();
1264 Rect r = rectForSize(w, h, size);
1265 decoder.setTargetSize(r.width(), r.height());
1266 });
1267
1268 if (thumbnail != null && file.getAbsolutePath() != null) {
1269 cache.put(file.getAbsolutePath(), thumbnail);
1270 return thumbnail;
1271 }
1272 } else if (uri.getScheme().equals("cid")) {
1273 Cid cid = BobTransfer.cid(uri);
1274 if (cid == null) continue;
1275 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1276 if (f != null && f.canRead()) {
1277 return getThumbnail(f, res, size, cacheOnly);
1278 }
1279 }
1280 }
1281 }
1282 }
1283 }
1284
1285 return getThumbnail(file, res, size, cacheOnly);
1286 }
1287
1288 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1289 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1290 }
1291
1292 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1293 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1294 Drawable thumbnail = cache.get(cacheKey);
1295 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1296 synchronized (THUMBNAIL_LOCK) {
1297 thumbnail = cache.get(cacheKey);
1298 if (thumbnail != null) {
1299 return thumbnail;
1300 }
1301 final String mime = file.getMimeType();
1302 if ("image/svg+xml".equals(mime)) {
1303 thumbnail = getSVG(file, size);
1304 } else if ("application/pdf".equals(mime)) {
1305 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1306 } else if (mime.startsWith("video/")) {
1307 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1308 } else {
1309 thumbnail = getImagePreview(file, res, size, mime);
1310 if (thumbnail == null) {
1311 throw new FileNotFoundException();
1312 }
1313 }
1314 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1315 }
1316 }
1317 return thumbnail;
1318 }
1319
1320 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1321 final Drawable drawable = getThumbnail(message, res, size, false);
1322 if (drawable == null) return null;
1323 return drawDrawable(drawable);
1324 }
1325
1326 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1327 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1328 if (drawable == null) return null;
1329 return drawDrawable(drawable);
1330 }
1331
1332 public static Rect rectForSize(int w, int h, int size) {
1333 int scalledW;
1334 int scalledH;
1335 if (w <= h) {
1336 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1337 scalledH = size;
1338 } else {
1339 scalledW = size;
1340 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1341 }
1342
1343 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1344
1345 return new Rect(0, 0, scalledW, scalledH);
1346 }
1347
1348 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1349 if (android.os.Build.VERSION.SDK_INT >= 28) {
1350 ImageDecoder.Source source = ImageDecoder.createSource(file);
1351 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1352 int w = info.getSize().getWidth();
1353 int h = info.getSize().getHeight();
1354 Rect r = rectForSize(w, h, size);
1355 decoder.setTargetSize(r.width(), r.height());
1356 });
1357 } else {
1358 BitmapFactory.Options options = new BitmapFactory.Options();
1359 options.inSampleSize = calcSampleSize(file, size);
1360 Bitmap bitmap = null;
1361 try {
1362 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1363 } catch (OutOfMemoryError e) {
1364 options.inSampleSize *= 2;
1365 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1366 }
1367 if (bitmap == null) return null;
1368
1369 bitmap = resize(bitmap, size);
1370 bitmap = rotate(bitmap, getRotation(file));
1371 if (mime.equals("image/gif")) {
1372 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1373 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1374 bitmap.recycle();
1375 bitmap = withGifOverlay;
1376 }
1377 return new BitmapDrawable(res, bitmap);
1378 }
1379 }
1380
1381 public static Bitmap drawDrawable(Drawable drawable) {
1382 if (drawable == null) return null;
1383
1384 Bitmap bitmap = null;
1385
1386 if (drawable instanceof BitmapDrawable) {
1387 bitmap = ((BitmapDrawable) drawable).getBitmap();
1388 if (bitmap != null) return bitmap;
1389 }
1390
1391 Rect bounds = drawable.getBounds();
1392 int width = drawable.getIntrinsicWidth();
1393 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1394 int height = drawable.getIntrinsicHeight();
1395 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1396
1397 if (width < 1) {
1398 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1399 width = 48;
1400 }
1401 if (height < 1) {
1402 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1403 height = 48;
1404 }
1405
1406 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1407 Canvas canvas = new Canvas(bitmap);
1408 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1409 drawable.draw(canvas);
1410 return bitmap;
1411 }
1412
1413 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1414 Bitmap overlay =
1415 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1416 Canvas canvas = new Canvas(bitmap);
1417 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1418 Log.d(
1419 Config.LOGTAG,
1420 "target size overlay: "
1421 + targetSize
1422 + " overlay bitmap size was "
1423 + overlay.getHeight());
1424 float left = (canvas.getWidth() - targetSize) / 2.0f;
1425 float top = (canvas.getHeight() - targetSize) / 2.0f;
1426 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1427 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1428 }
1429
1430 /** https://stackoverflow.com/a/3943023/210897 */
1431 private boolean paintOverlayBlack(final Bitmap bitmap) {
1432 final int h = bitmap.getHeight();
1433 final int w = bitmap.getWidth();
1434 int record = 0;
1435 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1436 for (int x = Math.round(w * IGNORE_PADDING);
1437 x < w - Math.round(w * IGNORE_PADDING);
1438 ++x) {
1439 int pixel = bitmap.getPixel(x, y);
1440 if ((Color.red(pixel) * 0.299
1441 + Color.green(pixel) * 0.587
1442 + Color.blue(pixel) * 0.114)
1443 > 186) {
1444 --record;
1445 } else {
1446 ++record;
1447 }
1448 }
1449 }
1450 return record < 0;
1451 }
1452
1453 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1454 final int h = bitmap.getHeight();
1455 final int w = bitmap.getWidth();
1456 int white = 0;
1457 for (int y = 0; y < h; ++y) {
1458 for (int x = 0; x < w; ++x) {
1459 int pixel = bitmap.getPixel(x, y);
1460 if ((Color.red(pixel) * 0.299
1461 + Color.green(pixel) * 0.587
1462 + Color.blue(pixel) * 0.114)
1463 > 186) {
1464 white++;
1465 }
1466 }
1467 }
1468 return white > (h * w * 0.4f);
1469 }
1470
1471 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1472 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1473 Bitmap frame;
1474 try {
1475 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1476 frame = metadataRetriever.getFrameAtTime(0);
1477 metadataRetriever.release();
1478 return cropCenterSquare(frame, size);
1479 } catch (Exception e) {
1480 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1481 frame.eraseColor(0xff000000);
1482 return frame;
1483 }
1484 }
1485
1486 private Bitmap getVideoPreview(final File file, final int size) {
1487 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1488 Bitmap frame;
1489 try {
1490 metadataRetriever.setDataSource(file.getAbsolutePath());
1491 frame = metadataRetriever.getFrameAtTime(0);
1492 metadataRetriever.release();
1493 frame = resize(frame, size);
1494 } catch (IOException | RuntimeException e) {
1495 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1496 frame.eraseColor(0xff000000);
1497 }
1498 drawOverlay(
1499 frame,
1500 paintOverlayBlack(frame)
1501 ? R.drawable.play_video_black
1502 : R.drawable.play_video_white,
1503 0.75f);
1504 return frame;
1505 }
1506
1507 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1508 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1509 try {
1510 final ParcelFileDescriptor fileDescriptor =
1511 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1512 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1513 drawOverlay(
1514 rendered,
1515 paintOverlayBlackPdf(rendered)
1516 ? R.drawable.open_pdf_black
1517 : R.drawable.open_pdf_white,
1518 0.75f);
1519 return rendered;
1520 } catch (final IOException | SecurityException e) {
1521 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1522 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1523 placeholder.eraseColor(0xff000000);
1524 return placeholder;
1525 }
1526 }
1527
1528 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1529 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1530 try {
1531 ParcelFileDescriptor fileDescriptor =
1532 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1533 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1534 return cropCenterSquare(bitmap, size);
1535 } catch (Exception e) {
1536 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1537 placeholder.eraseColor(0xff000000);
1538 return placeholder;
1539 }
1540 }
1541
1542 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1543 private Bitmap renderPdfDocument(
1544 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1545 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1546 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1547 final Dimensions dimensions =
1548 scalePdfDimensions(
1549 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1550 final Bitmap rendered =
1551 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1552 rendered.eraseColor(0xffffffff);
1553 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1554 page.close();
1555 pdfRenderer.close();
1556 fileDescriptor.close();
1557 return rendered;
1558 }
1559
1560 public Uri getTakePhotoUri() {
1561 final String filename =
1562 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1563 final File directory;
1564 if (Config.ONLY_INTERNAL_STORAGE) {
1565 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1566 } else {
1567 directory =
1568 new File(
1569 Environment.getExternalStoragePublicDirectory(
1570 Environment.DIRECTORY_DCIM),
1571 "Camera");
1572 }
1573 final File file = new File(directory, filename);
1574 file.getParentFile().mkdirs();
1575 return getUriForFile(mXmppConnectionService, file);
1576 }
1577
1578 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1579
1580 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1581 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1582 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1583 return uncompressAvatar.first;
1584 }
1585 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1586 Log.d(
1587 Config.LOGTAG,
1588 "uncompressed avatar exceeded char limit by "
1589 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1590 }
1591
1592 Bitmap bm = cropCenterSquare(image, size);
1593 if (bm == null) {
1594 return null;
1595 }
1596 if (hasAlpha(bm)) {
1597 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1598 bm.recycle();
1599 bm = cropCenterSquare(image, 96);
1600 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1601 }
1602 return getPepAvatar(bm, format, 100);
1603 }
1604
1605 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1606 try {
1607 if (android.os.Build.VERSION.SDK_INT >= 28) {
1608 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1609 int[] size = new int[] { 0, 0 };
1610 boolean[] animated = new boolean[] { false };
1611 String[] mimeType = new String[] { null };
1612 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1613 mimeType[0] = info.getMimeType();
1614 animated[0] = info.isAnimated();
1615 size[0] = info.getSize().getWidth();
1616 size[1] = info.getSize().getHeight();
1617 });
1618
1619 if (animated[0]) {
1620 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1621 if (avatar != null) return new Pair(avatar, true);
1622 }
1623
1624 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1625 } else {
1626 Bitmap bitmap =
1627 BitmapFactory.decodeStream(
1628 mXmppConnectionService.getContentResolver().openInputStream(uri));
1629 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1630 }
1631 } catch (Exception e) {
1632 try {
1633 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1634 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1635 } catch (Exception e2) {
1636 return null;
1637 }
1638 }
1639 }
1640
1641 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1642 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1643 if (fd.getLength() > 100000) return null; // Too big to use raw file
1644
1645 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1646 Base64OutputStream mBase64OutputStream =
1647 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1648 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1649 DigestOutputStream mDigestOutputStream =
1650 new DigestOutputStream(mBase64OutputStream, digest);
1651
1652 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1653 mDigestOutputStream.flush();
1654 mDigestOutputStream.close();
1655
1656 final Avatar avatar = new Avatar();
1657 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1658 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1659 avatar.type = mimeType;
1660 avatar.width = width;
1661 avatar.height = height;
1662 return avatar;
1663 }
1664
1665 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1666 try {
1667 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1668 Base64OutputStream mBase64OutputStream =
1669 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1670 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1671 DigestOutputStream mDigestOutputStream =
1672 new DigestOutputStream(mBase64OutputStream, digest);
1673 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1674 return null;
1675 }
1676 mDigestOutputStream.flush();
1677 mDigestOutputStream.close();
1678 long chars = mByteArrayOutputStream.size();
1679 if (format != Bitmap.CompressFormat.PNG
1680 && quality >= 50
1681 && chars >= Config.AVATAR_CHAR_LIMIT) {
1682 int q = quality - 2;
1683 Log.d(
1684 Config.LOGTAG,
1685 "avatar char length was " + chars + " reducing quality to " + q);
1686 return getPepAvatar(bitmap, format, q);
1687 }
1688 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1689 final Avatar avatar = new Avatar();
1690 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1691 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1692 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1693 avatar.type = "image/webp";
1694 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1695 avatar.type = "image/jpeg";
1696 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1697 avatar.type = "image/png";
1698 }
1699 avatar.width = bitmap.getWidth();
1700 avatar.height = bitmap.getHeight();
1701 return avatar;
1702 } catch (OutOfMemoryError e) {
1703 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1704 return null;
1705 } catch (Exception e) {
1706 return null;
1707 }
1708 }
1709
1710 public Avatar getStoredPepAvatar(String hash) {
1711 if (hash == null) {
1712 return null;
1713 }
1714 Avatar avatar = new Avatar();
1715 final File file = getAvatarFile(hash);
1716 FileInputStream is = null;
1717 try {
1718 avatar.size = file.length();
1719 BitmapFactory.Options options = new BitmapFactory.Options();
1720 options.inJustDecodeBounds = true;
1721 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1722 is = new FileInputStream(file);
1723 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1724 Base64OutputStream mBase64OutputStream =
1725 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1726 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1727 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1728 byte[] buffer = new byte[4096];
1729 int length;
1730 while ((length = is.read(buffer)) > 0) {
1731 os.write(buffer, 0, length);
1732 }
1733 os.flush();
1734 os.close();
1735 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1736 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1737 avatar.height = options.outHeight;
1738 avatar.width = options.outWidth;
1739 avatar.type = options.outMimeType;
1740 return avatar;
1741 } catch (NoSuchAlgorithmException | IOException e) {
1742 return null;
1743 } finally {
1744 close(is);
1745 }
1746 }
1747
1748 public boolean isAvatarCached(Avatar avatar) {
1749 final File file = getAvatarFile(avatar.getFilename());
1750 return file.exists();
1751 }
1752
1753 public boolean save(final Avatar avatar) {
1754 File file;
1755 if (isAvatarCached(avatar)) {
1756 file = getAvatarFile(avatar.getFilename());
1757 avatar.size = file.length();
1758 } else {
1759 file =
1760 new File(
1761 mXmppConnectionService.getCacheDir().getAbsolutePath()
1762 + "/"
1763 + UUID.randomUUID().toString());
1764 if (file.getParentFile().mkdirs()) {
1765 Log.d(Config.LOGTAG, "created cache directory");
1766 }
1767 OutputStream os = null;
1768 try {
1769 if (!file.createNewFile()) {
1770 Log.d(
1771 Config.LOGTAG,
1772 "unable to create temporary file " + file.getAbsolutePath());
1773 }
1774 os = new FileOutputStream(file);
1775 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1776 digest.reset();
1777 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1778 final byte[] bytes = avatar.getImageAsBytes();
1779 mDigestOutputStream.write(bytes);
1780 mDigestOutputStream.flush();
1781 mDigestOutputStream.close();
1782 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1783 if (sha1sum.equals(avatar.sha1sum)) {
1784 final File outputFile = getAvatarFile(avatar.getFilename());
1785 if (outputFile.getParentFile().mkdirs()) {
1786 Log.d(Config.LOGTAG, "created avatar directory");
1787 }
1788 final File avatarFile = getAvatarFile(avatar.getFilename());
1789 if (!file.renameTo(avatarFile)) {
1790 Log.d(
1791 Config.LOGTAG,
1792 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1793 return false;
1794 }
1795 } else {
1796 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1797 if (!file.delete()) {
1798 Log.d(Config.LOGTAG, "unable to delete temporary file");
1799 }
1800 return false;
1801 }
1802 avatar.size = bytes.length;
1803 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1804 return false;
1805 } finally {
1806 close(os);
1807 }
1808 }
1809 return true;
1810 }
1811
1812 public void deleteHistoricAvatarPath() {
1813 delete(getHistoricAvatarPath());
1814 }
1815
1816 private void delete(final File file) {
1817 if (file.isDirectory()) {
1818 final File[] files = file.listFiles();
1819 if (files != null) {
1820 for (final File f : files) {
1821 delete(f);
1822 }
1823 }
1824 }
1825 if (file.delete()) {
1826 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1827 }
1828 }
1829
1830 private File getHistoricAvatarPath() {
1831 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1832 }
1833
1834 public File getAvatarFile(String avatar) {
1835 final var f = new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1836 try {
1837 if (f.exists()) java.nio.file.Files.setAttribute(f.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
1838 } catch (final IOException e) {
1839 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + f);
1840 }
1841 return f;
1842 }
1843
1844 public Uri getAvatarUri(String avatar) {
1845 return Uri.fromFile(getAvatarFile(avatar));
1846 }
1847
1848 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1849 if (android.os.Build.VERSION.SDK_INT >= 28) {
1850 try {
1851 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1852 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1853 int w = info.getSize().getWidth();
1854 int h = info.getSize().getHeight();
1855 Rect r = rectForSize(w, h, size);
1856 decoder.setTargetSize(r.width(), r.height());
1857
1858 int newSize = Math.min(r.width(), r.height());
1859 int left = (r.width() - newSize) / 2;
1860 int top = (r.height() - newSize) / 2;
1861 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1862 });
1863 } catch (final IOException e) {
1864 return getSVGSquare(image, size);
1865 }
1866 } else {
1867 Bitmap bitmap = cropCenterSquare(image, size);
1868 return bitmap == null ? null : new BitmapDrawable(bitmap);
1869 }
1870 }
1871
1872 public Bitmap cropCenterSquare(Uri image, int size) {
1873 if (image == null) {
1874 return null;
1875 }
1876 InputStream is = null;
1877 try {
1878 BitmapFactory.Options options = new BitmapFactory.Options();
1879 options.inSampleSize = calcSampleSize(image, size);
1880 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1881 if (is == null) {
1882 return null;
1883 }
1884 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1885 if (input == null) {
1886 return null;
1887 } else {
1888 input = rotate(input, getRotation(image));
1889 return cropCenterSquare(input, size);
1890 }
1891 } catch (FileNotFoundException | SecurityException e) {
1892 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1893 return null;
1894 } finally {
1895 close(is);
1896 }
1897 }
1898
1899 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1900 if (image == null) {
1901 return null;
1902 }
1903 InputStream is = null;
1904 try {
1905 BitmapFactory.Options options = new BitmapFactory.Options();
1906 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1907 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1908 if (is == null) {
1909 return null;
1910 }
1911 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1912 if (source == null) {
1913 return null;
1914 }
1915 int sourceWidth = source.getWidth();
1916 int sourceHeight = source.getHeight();
1917 float xScale = (float) newWidth / sourceWidth;
1918 float yScale = (float) newHeight / sourceHeight;
1919 float scale = Math.max(xScale, yScale);
1920 float scaledWidth = scale * sourceWidth;
1921 float scaledHeight = scale * sourceHeight;
1922 float left = (newWidth - scaledWidth) / 2;
1923 float top = (newHeight - scaledHeight) / 2;
1924
1925 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1926 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1927 Canvas canvas = new Canvas(dest);
1928 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1929 if (source.isRecycled()) {
1930 source.recycle();
1931 }
1932 return dest;
1933 } catch (SecurityException e) {
1934 return null; // android 6.0 with revoked permissions for example
1935 } catch (FileNotFoundException e) {
1936 return null;
1937 } finally {
1938 close(is);
1939 }
1940 }
1941
1942 public Bitmap cropCenterSquare(Bitmap input, int size) {
1943 int w = input.getWidth();
1944 int h = input.getHeight();
1945
1946 float scale = Math.max((float) size / h, (float) size / w);
1947
1948 float outWidth = scale * w;
1949 float outHeight = scale * h;
1950 float left = (size - outWidth) / 2;
1951 float top = (size - outHeight) / 2;
1952 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1953
1954 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1955 Canvas canvas = new Canvas(output);
1956 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1957 if (!input.isRecycled()) {
1958 input.recycle();
1959 }
1960 return output;
1961 }
1962
1963 private int calcSampleSize(Uri image, int size)
1964 throws FileNotFoundException, SecurityException {
1965 final BitmapFactory.Options options = new BitmapFactory.Options();
1966 options.inJustDecodeBounds = true;
1967 final InputStream inputStream =
1968 mXmppConnectionService.getContentResolver().openInputStream(image);
1969 BitmapFactory.decodeStream(inputStream, null, options);
1970 close(inputStream);
1971 return calcSampleSize(options, size);
1972 }
1973
1974 public void updateFileParams(Message message) {
1975 updateFileParams(message, null);
1976 }
1977
1978 public void updateFileParams(final Message message, final String url) {
1979 updateFileParams(message, url, true);
1980 }
1981
1982 public void updateFileParams(final Message message, String url, boolean updateCids) {
1983 final boolean encrypted =
1984 message.getEncryption() == Message.ENCRYPTION_PGP
1985 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1986 final DownloadableFile file = getFile(message);
1987 final String mime = file.getMimeType();
1988 final boolean privateMessage = message.isPrivateMessage();
1989 final boolean image =
1990 message.getType() == Message.TYPE_IMAGE
1991 || (mime != null && mime.startsWith("image/"));
1992 Message.FileParams fileParams = message.getFileParams();
1993 if (fileParams == null) fileParams = new Message.FileParams();
1994 Cid[] cids = new Cid[0];
1995 try {
1996 cids = calculateCids(new FileInputStream(file));
1997 fileParams.setCids(List.of(cids));
1998 } catch (final IOException | NoSuchAlgorithmException e) { }
1999 if (url == null) {
2000 for (Cid cid : cids) {
2001 url = mXmppConnectionService.getUrlForCid(cid);
2002 if (url != null) {
2003 fileParams.url = url;
2004 break;
2005 }
2006 }
2007 } else {
2008 fileParams.url = url;
2009 }
2010 if (fileParams.getName() == null) fileParams.setName(file.getName());
2011 fileParams.setMediaType(mime);
2012 if (encrypted && !file.exists()) {
2013 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
2014 final DownloadableFile encryptedFile = getFile(message, false);
2015 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
2016 } else {
2017 Log.d(Config.LOGTAG, "running updateFileParams");
2018 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
2019 final boolean video = mime != null && mime.startsWith("video/");
2020 final boolean audio = mime != null && mime.startsWith("audio/");
2021 final boolean pdf = "application/pdf".equals(mime);
2022 if (file.canRead()) fileParams.size = file.getSize();
2023 if (ambiguous) {
2024 try {
2025 final Dimensions dimensions = getVideoDimensions(file);
2026 if (dimensions.valid()) {
2027 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
2028 fileParams.width = dimensions.width;
2029 fileParams.height = dimensions.height;
2030 } else {
2031 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2032 fileParams.runtime = getMediaRuntime(file);
2033 }
2034 } catch (final IOException | NotAVideoFile e) {
2035 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2036 fileParams.runtime = getMediaRuntime(file);
2037 }
2038 } else if (image || video || pdf) {
2039 try {
2040 final Dimensions dimensions;
2041 if (video) {
2042 dimensions = getVideoDimensions(file);
2043 } else if (pdf) {
2044 dimensions = getPdfDocumentDimensions(file);
2045 } else if ("image/svg+xml".equals(mime)) {
2046 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2047 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2048 } else {
2049 dimensions = getImageDimensions(file);
2050 }
2051 if (dimensions.valid()) {
2052 fileParams.width = dimensions.width;
2053 fileParams.height = dimensions.height;
2054 }
2055 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2056 Log.d(
2057 Config.LOGTAG,
2058 "file with mime type " + file.getMimeType() + " was not a video file");
2059 // fall threw
2060 }
2061 } else if (audio) {
2062 fileParams.runtime = getMediaRuntime(file);
2063 }
2064 try {
2065 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2066 if (thumb != null) {
2067 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2068 byte[] rgba = new byte[pixels.length * 4];
2069 try {
2070 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2071 } catch (final IllegalStateException e) {
2072 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2073 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2074 softThumb.recycle();
2075 }
2076 for (int i = 0; i < pixels.length; i++) {
2077 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2078 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2079 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2080 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2081 }
2082 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2083 }
2084 } catch (final IOException e) { }
2085 }
2086 message.setFileParams(fileParams);
2087 message.setDeleted(false);
2088 message.setType(
2089 privateMessage
2090 ? Message.TYPE_PRIVATE_FILE
2091 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2092
2093 if (updateCids) {
2094 try {
2095 for (int i = 0; i < cids.length; i++) {
2096 mXmppConnectionService.saveCid(cids[i], file);
2097 }
2098 } catch (XmppConnectionService.BlockedMediaException e) { }
2099 }
2100 }
2101
2102 private int getMediaRuntime(final File file) {
2103 try {
2104 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2105 mediaMetadataRetriever.setDataSource(file.toString());
2106 final String value =
2107 mediaMetadataRetriever.extractMetadata(
2108 MediaMetadataRetriever.METADATA_KEY_DURATION);
2109 if (Strings.isNullOrEmpty(value)) {
2110 return 0;
2111 }
2112 return Integer.parseInt(value);
2113 } catch (final Exception e) {
2114 return 0;
2115 }
2116 }
2117
2118 private Dimensions getImageDimensions(File file) {
2119 final BitmapFactory.Options options = new BitmapFactory.Options();
2120 options.inJustDecodeBounds = true;
2121 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2122 final int rotation = getRotation(file);
2123 final boolean rotated = rotation == 90 || rotation == 270;
2124 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2125 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2126 return new Dimensions(imageHeight, imageWidth);
2127 }
2128
2129 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2130 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2131 try {
2132 metadataRetriever.setDataSource(file.getAbsolutePath());
2133 } catch (RuntimeException e) {
2134 throw new NotAVideoFile(e);
2135 }
2136 return getVideoDimensions(metadataRetriever);
2137 }
2138
2139 private Dimensions getPdfDocumentDimensions(final File file) {
2140 final ParcelFileDescriptor fileDescriptor;
2141 try {
2142 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2143 if (fileDescriptor == null) {
2144 return new Dimensions(0, 0);
2145 }
2146 } catch (final FileNotFoundException e) {
2147 return new Dimensions(0, 0);
2148 }
2149 try {
2150 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2151 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2152 final int height = page.getHeight();
2153 final int width = page.getWidth();
2154 page.close();
2155 pdfRenderer.close();
2156 return scalePdfDimensions(new Dimensions(height, width));
2157 } catch (final IOException | SecurityException e) {
2158 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2159 return new Dimensions(0, 0);
2160 }
2161 }
2162
2163 private Dimensions scalePdfDimensions(Dimensions in) {
2164 final DisplayMetrics displayMetrics =
2165 mXmppConnectionService.getResources().getDisplayMetrics();
2166 final int target = (int) (displayMetrics.density * 288);
2167 return scalePdfDimensions(in, target, true);
2168 }
2169
2170 private static Dimensions scalePdfDimensions(
2171 final Dimensions in, final int target, final boolean fit) {
2172 final int w, h;
2173 if (fit == (in.width <= in.height)) {
2174 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2175 h = target;
2176 } else {
2177 w = target;
2178 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2179 }
2180 return new Dimensions(h, w);
2181 }
2182
2183 public Drawable getAvatar(String avatar, int size) {
2184 if (avatar == null) {
2185 return null;
2186 }
2187
2188 if (android.os.Build.VERSION.SDK_INT >= 28) {
2189 try {
2190 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2191 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2192 int w = info.getSize().getWidth();
2193 int h = info.getSize().getHeight();
2194 Rect r = rectForSize(w, h, size);
2195 decoder.setTargetSize(r.width(), r.height());
2196
2197 int newSize = Math.min(r.width(), r.height());
2198 int left = (r.width() - newSize) / 2;
2199 int top = (r.height() - newSize) / 2;
2200 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2201 });
2202 } catch (final IOException e) {
2203 return getSVGSquare(getAvatarUri(avatar), size);
2204 }
2205 } else {
2206 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2207 return bm == null ? null : new BitmapDrawable(bm);
2208 }
2209 }
2210
2211 public Drawable getSVGSquare(Uri uri, int size) {
2212 try {
2213 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2214 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2215
2216 float w = svg.getDocumentWidth();
2217 float h = svg.getDocumentHeight();
2218 float scale = Math.max((float) size / h, (float) size / w);
2219 float outWidth = scale * w;
2220 float outHeight = scale * h;
2221 float left = (size - outWidth) / 2;
2222 float top = (size - outHeight) / 2;
2223 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2224 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2225 svg.setDocumentWidth("100%");
2226 svg.setDocumentHeight("100%");
2227
2228 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2229 Canvas canvas = new Canvas(output);
2230 svg.renderToCanvas(canvas, target);
2231
2232 return new SVGDrawable(output);
2233 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2234 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2235 return null;
2236 }
2237 }
2238
2239 public Drawable getSVG(File file, int size) {
2240 try {
2241 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2242 return drawSVG(svg, size);
2243 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2244 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2245 return null;
2246 }
2247 }
2248
2249 public Drawable drawSVG(SVG svg, int size) {
2250 try {
2251 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2252
2253 float w = svg.getDocumentWidth();
2254 float h = svg.getDocumentHeight();
2255 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2256 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2257 svg.setDocumentWidth("100%");
2258 svg.setDocumentHeight("100%");
2259
2260 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2261 Canvas canvas = new Canvas(output);
2262 svg.renderToCanvas(canvas);
2263
2264 return new SVGDrawable(output);
2265 } catch (final SVGParseException e) {
2266 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2267 return null;
2268 }
2269 }
2270
2271 private static class Dimensions {
2272 public final int width;
2273 public final int height;
2274
2275 Dimensions(int height, int width) {
2276 this.width = width;
2277 this.height = height;
2278 }
2279
2280 public int getMin() {
2281 return Math.min(width, height);
2282 }
2283
2284 public boolean valid() {
2285 return width > 0 && height > 0;
2286 }
2287 }
2288
2289 private static class NotAVideoFile extends Exception {
2290 public NotAVideoFile(Throwable t) {
2291 super(t);
2292 }
2293
2294 public NotAVideoFile() {
2295 super();
2296 }
2297 }
2298
2299 public static class ImageCompressionException extends Exception {
2300
2301 ImageCompressionException(String message) {
2302 super(message);
2303 }
2304 }
2305
2306 public static class FileCopyException extends Exception {
2307 private final int resId;
2308
2309 private FileCopyException(@StringRes int resId) {
2310 this.resId = resId;
2311 }
2312
2313 public @StringRes int getResId() {
2314 return resId;
2315 }
2316 }
2317
2318 public static class SVGDrawable extends BitmapDrawable {
2319 public SVGDrawable(Bitmap bm) { super(bm); }
2320 }
2321}