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 eu.siacs.conversations.Config;
57import eu.siacs.conversations.R;
58import eu.siacs.conversations.entities.Conversation;
59import eu.siacs.conversations.entities.DownloadableFile;
60import eu.siacs.conversations.entities.Message;
61import eu.siacs.conversations.services.AttachFileToConversationRunnable;
62import eu.siacs.conversations.services.XmppConnectionService;
63import eu.siacs.conversations.ui.adapter.MediaAdapter;
64import eu.siacs.conversations.ui.util.Attachment;
65import eu.siacs.conversations.utils.CryptoHelper;
66import eu.siacs.conversations.utils.FileUtils;
67import eu.siacs.conversations.utils.FileWriterException;
68import eu.siacs.conversations.utils.MimeUtils;
69import eu.siacs.conversations.xmpp.pep.Avatar;
70
71import java.io.ByteArrayInputStream;
72import java.io.ByteArrayOutputStream;
73import java.io.Closeable;
74import java.io.File;
75import java.io.FileDescriptor;
76import java.io.FileInputStream;
77import java.io.FileNotFoundException;
78import java.io.FileOutputStream;
79import java.io.IOException;
80import java.io.InputStream;
81import java.io.OutputStream;
82import java.net.ServerSocket;
83import java.net.Socket;
84import java.nio.ByteBuffer;
85import java.security.DigestOutputStream;
86import java.security.MessageDigest;
87import java.security.NoSuchAlgorithmException;
88import java.text.SimpleDateFormat;
89import java.util.ArrayList;
90import java.util.Arrays;
91import java.util.Date;
92import java.util.List;
93import java.util.Locale;
94import java.util.UUID;
95import java.util.zip.ZipEntry;
96import java.util.zip.ZipFile;
97
98import org.tomlj.Toml;
99import org.tomlj.TomlTable;
100
101import io.ipfs.cid.Cid;
102
103public class FileBackend {
104
105 private static final Object THUMBNAIL_LOCK = new Object();
106
107 private static final SimpleDateFormat IMAGE_DATE_FORMAT =
108 new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
109
110 private static final String FILE_PROVIDER = ".files";
111 private static final float IGNORE_PADDING = 0.15f;
112 private final XmppConnectionService mXmppConnectionService;
113
114 private static final List<String> STORAGE_TYPES;
115
116 static {
117 final ImmutableList.Builder<String> builder =
118 new ImmutableList.Builder<String>()
119 .add(
120 Environment.DIRECTORY_DOWNLOADS,
121 Environment.DIRECTORY_PICTURES,
122 Environment.DIRECTORY_MOVIES);
123 if (Build.VERSION.SDK_INT >= 19) {
124 builder.add(Environment.DIRECTORY_DOCUMENTS);
125 }
126 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
127 builder.add(Environment.DIRECTORY_RECORDINGS);
128 }
129 STORAGE_TYPES = builder.build();
130 }
131
132 public FileBackend(XmppConnectionService service) {
133 this.mXmppConnectionService = service;
134 }
135
136 public static long getFileSize(Context context, Uri uri) {
137 try (final Cursor cursor =
138 context.getContentResolver().query(uri, null, null, null, null)) {
139 if (cursor != null && cursor.moveToFirst()) {
140 final int index = cursor.getColumnIndex(OpenableColumns.SIZE);
141 if (index == -1) {
142 return -1;
143 }
144 return cursor.getLong(index);
145 }
146 return -1;
147 } catch (final Exception ignored) {
148 return -1;
149 }
150 }
151
152 public static boolean allFilesUnderSize(
153 Context context, List<Attachment> attachments, long max) {
154 final boolean compressVideo =
155 !AttachFileToConversationRunnable.getVideoCompression(context)
156 .equals("uncompressed");
157 if (max <= 0) {
158 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
159 return true; // exception to be compatible with HTTP Upload < v0.2
160 }
161 for (Attachment attachment : attachments) {
162 if (attachment.getType() != Attachment.Type.FILE) {
163 continue;
164 }
165 String mime = attachment.getMime();
166 if (mime != null && mime.startsWith("video/") && compressVideo) {
167 try {
168 Dimensions dimensions =
169 FileBackend.getVideoDimensions(context, attachment.getUri());
170 if (dimensions.getMin() > 720) {
171 Log.d(
172 Config.LOGTAG,
173 "do not consider video file with min width larger than 720 for size check");
174 continue;
175 }
176 } catch (final IOException | NotAVideoFile e) {
177 // ignore and fall through
178 }
179 }
180 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
181 Log.d(
182 Config.LOGTAG,
183 "not all files are under "
184 + max
185 + " bytes. suggesting falling back to jingle");
186 return false;
187 }
188 }
189 return true;
190 }
191
192 public static File getBackupDirectory(final Context context) {
193 final File conversationsDownloadDirectory =
194 new File(
195 Environment.getExternalStoragePublicDirectory(
196 Environment.DIRECTORY_DOWNLOADS),
197 context.getString(R.string.app_name));
198 return new File(conversationsDownloadDirectory, "Backup");
199 }
200
201 public static File getLegacyBackupDirectory(final String app) {
202 final File appDirectory = new File(Environment.getExternalStorageDirectory(), app);
203 return new File(appDirectory, "Backup");
204 }
205
206 private static Bitmap rotate(final Bitmap bitmap, final int degree) {
207 if (degree == 0) {
208 return bitmap;
209 }
210 final int w = bitmap.getWidth();
211 final int h = bitmap.getHeight();
212 final Matrix matrix = new Matrix();
213 matrix.postRotate(degree);
214 final Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
215 if (!bitmap.isRecycled()) {
216 bitmap.recycle();
217 }
218 return result;
219 }
220
221 public static boolean isPathBlacklisted(String path) {
222 final String androidDataPath =
223 Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
224 final File f = new File(path);
225 return path.startsWith(androidDataPath) || !f.canRead();
226 }
227
228 private static Paint createAntiAliasingPaint() {
229 Paint paint = new Paint();
230 paint.setAntiAlias(true);
231 paint.setFilterBitmap(true);
232 paint.setDither(true);
233 return paint;
234 }
235
236 public static Uri getUriForUri(Context context, Uri uri) {
237 if ("file".equals(uri.getScheme())) {
238 return getUriForFile(context, new File(uri.getPath()));
239 } else {
240 return uri;
241 }
242 }
243
244 public static Uri getUriForFile(Context context, File file) {
245 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE || file.toString().startsWith(context.getCacheDir().toString())) {
246 try {
247 return FileProvider.getUriForFile(context, getAuthority(context), file);
248 } catch (IllegalArgumentException e) {
249 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
250 throw new SecurityException(e);
251 } else {
252 return Uri.fromFile(file);
253 }
254 }
255 } else {
256 return Uri.fromFile(file);
257 }
258 }
259
260 public static String getAuthority(Context context) {
261 return context.getPackageName() + FILE_PROVIDER;
262 }
263
264 private static boolean hasAlpha(final Bitmap bitmap) {
265 final int w = bitmap.getWidth();
266 final int h = bitmap.getHeight();
267 final int yStep = Math.max(1, w / 100);
268 final int xStep = Math.max(1, h / 100);
269 for (int x = 0; x < w; x += xStep) {
270 for (int y = 0; y < h; y += yStep) {
271 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
272 return true;
273 }
274 }
275 }
276 return false;
277 }
278
279 private static int calcSampleSize(File image, int size) {
280 BitmapFactory.Options options = new BitmapFactory.Options();
281 options.inJustDecodeBounds = true;
282 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
283 return calcSampleSize(options, size);
284 }
285
286 private static int calcSampleSize(BitmapFactory.Options options, int size) {
287 int height = options.outHeight;
288 int width = options.outWidth;
289 int inSampleSize = 1;
290
291 if (height > size || width > size) {
292 int halfHeight = height / 2;
293 int halfWidth = width / 2;
294
295 while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) {
296 inSampleSize *= 2;
297 }
298 }
299 return inSampleSize;
300 }
301
302 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile, IOException {
303 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
304 try {
305 mediaMetadataRetriever.setDataSource(context, uri);
306 } catch (RuntimeException e) {
307 throw new NotAVideoFile(e);
308 }
309 return getVideoDimensions(mediaMetadataRetriever);
310 }
311
312 private static Dimensions getVideoDimensionsOfFrame(
313 MediaMetadataRetriever mediaMetadataRetriever) {
314 Bitmap bitmap = null;
315 try {
316 bitmap = mediaMetadataRetriever.getFrameAtTime();
317 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
318 } catch (Exception e) {
319 return null;
320 } finally {
321 if (bitmap != null) {
322 bitmap.recycle();
323 }
324 }
325 }
326
327 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever)
328 throws NotAVideoFile, IOException {
329 String hasVideo =
330 metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
331 if (hasVideo == null) {
332 throw new NotAVideoFile();
333 }
334 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
335 if (dimensions != null) {
336 return dimensions;
337 }
338 final int rotation = extractRotationFromMediaRetriever(metadataRetriever);
339 boolean rotated = rotation == 90 || rotation == 270;
340 int height;
341 try {
342 String h =
343 metadataRetriever.extractMetadata(
344 MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
345 height = Integer.parseInt(h);
346 } catch (Exception e) {
347 height = -1;
348 }
349 int width;
350 try {
351 String w =
352 metadataRetriever.extractMetadata(
353 MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
354 width = Integer.parseInt(w);
355 } catch (Exception e) {
356 width = -1;
357 }
358 try {
359 metadataRetriever.release();
360 } catch (final IOException e) {
361 throw new NotAVideoFile();
362 }
363 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
364 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
365 }
366
367 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
368 String r =
369 metadataRetriever.extractMetadata(
370 MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
371 try {
372 return Integer.parseInt(r);
373 } catch (Exception e) {
374 return 0;
375 }
376 }
377
378 public static void close(final Closeable stream) {
379 if (stream != null) {
380 try {
381 stream.close();
382 } catch (Exception e) {
383 Log.d(Config.LOGTAG, "unable to close stream", e);
384 }
385 }
386 }
387
388 public static void close(final Socket socket) {
389 if (socket != null) {
390 try {
391 socket.close();
392 } catch (IOException e) {
393 Log.d(Config.LOGTAG, "unable to close socket", e);
394 }
395 }
396 }
397
398 public static void close(final ServerSocket socket) {
399 if (socket != null) {
400 try {
401 socket.close();
402 } catch (IOException e) {
403 Log.d(Config.LOGTAG, "unable to close server socket", e);
404 }
405 }
406 }
407
408 public static boolean dangerousFile(final Uri uri) {
409 if (uri == null || Strings.isNullOrEmpty(uri.getScheme())) {
410 return true;
411 }
412 if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
413 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
414 // On Android 7 (and apps that target 7) it is now longer possible to share files
415 // with a file scheme. By now you should probably not be running apps that target
416 // anything less than 7 any more
417 return true;
418 } else {
419 return isFileOwnedByProcess(uri);
420 }
421 }
422 return false;
423 }
424
425 private static boolean isFileOwnedByProcess(final Uri uri) {
426 final String path = uri.getPath();
427 if (path == null) {
428 return true;
429 }
430 try (final var pfd =
431 ParcelFileDescriptor.open(new File(path), ParcelFileDescriptor.MODE_READ_ONLY)) {
432 final FileDescriptor fd = pfd.getFileDescriptor();
433 final StructStat st = Os.fstat(fd);
434 return st.st_uid == android.os.Process.myUid();
435 } catch (final Exception e) {
436 // when in doubt. better safe than sorry
437 return true;
438 }
439 }
440
441 public static Uri getMediaUri(Context context, File file) {
442 final String filePath = file.getAbsolutePath();
443 try (final Cursor cursor =
444 context.getContentResolver()
445 .query(
446 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
447 new String[] {MediaStore.Images.Media._ID},
448 MediaStore.Images.Media.DATA + "=? ",
449 new String[] {filePath},
450 null)) {
451 if (cursor != null && cursor.moveToFirst()) {
452 final int id =
453 cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID));
454 return Uri.withAppendedPath(
455 MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
456 } else {
457 return null;
458 }
459 } catch (final Exception e) {
460 return null;
461 }
462 }
463
464 public static void updateFileParams(Message message, String url, long size) {
465 Message.FileParams fileParams = new Message.FileParams();
466 fileParams.url = url;
467 fileParams.size = size;
468 message.setFileParams(fileParams);
469 }
470
471 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
472 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
473 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
474 Drawable drawable = cache.get(key);
475 if (drawable != null || cacheOnly) {
476 return drawDrawable(drawable);
477 }
478 Bitmap bitmap = null;
479 final String mime = attachment.getMime();
480 if ("application/pdf".equals(mime)) {
481 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
482 drawOverlay(
483 bitmap,
484 paintOverlayBlackPdf(bitmap)
485 ? R.drawable.open_pdf_black
486 : R.drawable.open_pdf_white,
487 0.75f);
488 } else if (mime != null && mime.startsWith("video/")) {
489 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
490 drawOverlay(
491 bitmap,
492 paintOverlayBlack(bitmap)
493 ? R.drawable.play_video_black
494 : R.drawable.play_video_white,
495 0.75f);
496 } else {
497 bitmap = cropCenterSquare(attachment.getUri(), size);
498 if (bitmap != null && "image/gif".equals(mime)) {
499 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
500 drawOverlay(
501 withGifOverlay,
502 paintOverlayBlack(withGifOverlay)
503 ? R.drawable.play_gif_black
504 : R.drawable.play_gif_white,
505 1.0f);
506 bitmap.recycle();
507 bitmap = withGifOverlay;
508 }
509 }
510 if (key != null && bitmap != null) {
511 cache.put(key, new BitmapDrawable(bitmap));
512 }
513 return bitmap;
514 }
515
516 public void updateMediaScanner(File file) {
517 updateMediaScanner(file, null);
518 }
519
520 public void updateMediaScanner(File file, final Runnable callback) {
521 MediaScannerConnection.scanFile(
522 mXmppConnectionService,
523 new String[] {file.getAbsolutePath()},
524 null,
525 new MediaScannerConnection.MediaScannerConnectionClient() {
526 @Override
527 public void onMediaScannerConnected() {}
528
529 @Override
530 public void onScanCompleted(String path, Uri uri) {
531 if (callback != null && file.getAbsolutePath().equals(path)) {
532 callback.run();
533 } else {
534 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
535 if (callback != null) {
536 callback.run();
537 }
538 }
539 }
540 });
541 }
542
543 public boolean deleteFile(Message message) {
544 File file = getFile(message);
545 if (file.delete()) {
546 message.setDeleted(true);
547 updateMediaScanner(file);
548 return true;
549 } else {
550 return false;
551 }
552 }
553
554 public DownloadableFile getFile(Message message) {
555 return getFile(message, true);
556 }
557
558 public DownloadableFile getFileForPath(String path) {
559 return getFileForPath(
560 path,
561 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
562 }
563
564 private DownloadableFile getFileForPath(final String path, final String mime) {
565 if (path.startsWith("/")) {
566 return new DownloadableFile(path);
567 } else {
568 return getLegacyFileForFilename(path, mime);
569 }
570 }
571
572 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
573 if (Strings.isNullOrEmpty(mime)) {
574 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
575 } else if (mime.startsWith("image/")) {
576 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
577 } else if (mime.startsWith("video/")) {
578 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
579 } else {
580 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
581 }
582 }
583
584 public boolean isInternalFile(final File file) {
585 final File internalFile = getFileForPath(file.getName());
586 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
587 }
588
589 public DownloadableFile getFile(Message message, boolean decrypted) {
590 final boolean encrypted =
591 !decrypted
592 && (message.getEncryption() == Message.ENCRYPTION_PGP
593 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
594 String path = message.getRelativeFilePath();
595 if (path == null) {
596 path = message.getUuid();
597 }
598 final var msgFile = getFileForPath(path, message.getMimeType());
599
600 final DownloadableFile file;
601 if (encrypted) {
602 file = new DownloadableFile(
603 mXmppConnectionService.getCacheDir(),
604 String.format("%s.%s", msgFile.getName(), "pgp"));
605 } else {
606 file = msgFile;
607 }
608
609 try {
610 if (file.exists() && file.toString().startsWith(mXmppConnectionService.getCacheDir().toString())) {
611 java.nio.file.Files.setAttribute(file.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
612 }
613 } catch (final IOException e) {
614 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + file);
615 }
616
617 return file;
618 }
619
620 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
621 final List<Attachment> attachments = new ArrayList<>();
622 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
623 final String mime =
624 MimeUtils.guessMimeTypeFromExtension(
625 MimeUtils.extractRelevantExtension(relativeFilePath.path));
626 final File file = getFileForPath(relativeFilePath.path, mime);
627 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
628 }
629 return attachments;
630 }
631
632 private File getLegacyStorageLocation(final String type) {
633 if (Config.ONLY_INTERNAL_STORAGE) {
634 return new File(mXmppConnectionService.getFilesDir(), type);
635 } else {
636 final File appDirectory =
637 new File(
638 Environment.getExternalStorageDirectory(),
639 mXmppConnectionService.getString(R.string.app_name));
640 final File appMediaDirectory = new File(appDirectory, "Media");
641 final String locationName =
642 String.format(
643 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
644 return new File(appMediaDirectory, locationName);
645 }
646 }
647
648 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
649 int w = originalBitmap.getWidth();
650 int h = originalBitmap.getHeight();
651 if (w <= 0 || h <= 0) {
652 throw new IOException("Decoded bitmap reported bounds smaller 0");
653 } else if (Math.max(w, h) > size) {
654 int scalledW;
655 int scalledH;
656 if (w <= h) {
657 scalledW = Math.max((int) (w / ((double) h / size)), 1);
658 scalledH = size;
659 } else {
660 scalledW = size;
661 scalledH = Math.max((int) (h / ((double) w / size)), 1);
662 }
663 final Bitmap result =
664 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
665 if (!originalBitmap.isRecycled()) {
666 originalBitmap.recycle();
667 }
668 return result;
669 } else {
670 return originalBitmap;
671 }
672 }
673
674 public long getUriSize(final Uri uri) {
675 Cursor cursor = null;
676 try {
677 cursor = mXmppConnectionService.getContentResolver().query(uri, null, null, null, null);
678 if (cursor != null && cursor.moveToFirst()) {
679 int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
680 return cursor.getLong(sizeIndex);
681 }
682 } finally {
683 if (cursor != null) {
684 cursor.close();
685 }
686 }
687 return 0; // Return 0 if the size information is not available
688 }
689
690 public boolean useImageAsIs(final Uri uri) {
691 try {
692 for (Cid cid : calculateCids(uri)) {
693 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
694 }
695
696 long fsize = getUriSize(uri);
697 if (fsize == 0 || fsize >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
698 return false;
699 }
700
701 if (android.os.Build.VERSION.SDK_INT >= 28) {
702 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
703 int[] size = new int[] { 0, 0 };
704 boolean[] animated = new boolean[] { false };
705 String[] mimeType = new String[] { null };
706 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
707 mimeType[0] = info.getMimeType();
708 animated[0] = info.isAnimated();
709 size[0] = info.getSize().getWidth();
710 size[1] = info.getSize().getHeight();
711 });
712
713 return animated[0] || (size[0] <= Config.IMAGE_SIZE && size[1] <= Config.IMAGE_SIZE);
714 }
715
716 BitmapFactory.Options options = new BitmapFactory.Options();
717 options.inJustDecodeBounds = true;
718 final InputStream inputStream =
719 mXmppConnectionService.getContentResolver().openInputStream(uri);
720 BitmapFactory.decodeStream(inputStream, null, options);
721 close(inputStream);
722 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
723 return false;
724 }
725 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE);
726 } catch (final IOException e) {
727 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
728 return false;
729 }
730 }
731
732 public String getOriginalPath(final Uri uri) {
733 return FileUtils.getPath(mXmppConnectionService, uri);
734 }
735
736 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
737 Log.d(
738 Config.LOGTAG,
739 "copy file (" + file + ") to " + df);
740 try (final InputStream is = new FileInputStream(file);
741 final OutputStream os =
742 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
743 if (is == null) {
744 throw new FileCopyException(R.string.error_file_not_found);
745 }
746 try {
747 ByteStreams.copy(is, os);
748 os.flush();
749 } catch (IOException e) {
750 throw new FileWriterException(file);
751 }
752 } catch (final FileNotFoundException e) {
753 throw new FileCopyException(R.string.error_file_not_found);
754 } catch (final FileWriterException e) {
755 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
756 } catch (final SecurityException | IllegalStateException e) {
757 throw new FileCopyException(R.string.error_security_exception);
758 } catch (final IOException e) {
759 throw new FileCopyException(R.string.error_io_exception);
760 }
761 }
762
763 private InputStream openInputStream(Uri uri) throws IOException {
764 if (uri != null && "data".equals(uri.getScheme())) {
765 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
766 byte[] data;
767 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
768 String[] parts2 = parts[0].split(";", 2);
769 parts[0] = parts2[0];
770 data = Base64.decode(parts[1], 0);
771 } else {
772 try {
773 data = parts[1].getBytes("UTF-8");
774 } catch (final IOException e) {
775 data = new byte[0];
776 }
777 }
778 return new ByteArrayInputStream(data);
779 }
780 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
781 if (is == null) throw new FileNotFoundException("File not found");
782 return is;
783 }
784
785 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
786 final var parentDirectory = file.getParentFile();
787 if (parentDirectory != null && parentDirectory.mkdirs()) {
788 Log.d(Config.LOGTAG,"created directory "+parentDirectory.getAbsolutePath());
789 }
790 try {
791 if (!file.createNewFile() && file.length() > 0) {
792 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
793 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
794 }
795 } catch (final IOException e) {
796 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
797 }
798 try (final OutputStream os = new FileOutputStream(file);
799 final InputStream is = openInputStream(uri)) {
800 if (is == null) {
801 throw new FileCopyException(R.string.error_file_not_found);
802 }
803 try {
804 ByteStreams.copy(is, os);
805 } catch (final IOException e) {
806 throw new FileWriterException(file);
807 }
808 try {
809 os.flush();
810 } catch (final IOException e) {
811 throw new FileWriterException(file);
812 }
813 } catch (final FileNotFoundException e) {
814 cleanup(file);
815 throw new FileCopyException(R.string.error_file_not_found);
816 } catch (final FileWriterException e) {
817 cleanup(file);
818 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
819 } catch (final SecurityException | IllegalStateException | IllegalArgumentException e) {
820 cleanup(file);
821 throw new FileCopyException(R.string.error_security_exception);
822 } catch (final IOException e) {
823 cleanup(file);
824 throw new FileCopyException(R.string.error_io_exception);
825 }
826 }
827
828 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
829 throws FileCopyException {
830 final String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
831 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
832 String extension = MimeUtils.guessExtensionFromMimeType(mime);
833 if (extension == null) {
834 Log.d(Config.LOGTAG, "extension from mime type was null");
835 extension = getExtensionFromUri(uri);
836 }
837 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
838 extension = "oga";
839 }
840
841 try {
842 setupRelativeFilePath(message, uri, extension);
843 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
844 final String name = getDisplayNameFromUri(uri);
845 if (name != null) {
846 message.getFileParams().setName(name);
847 }
848 } catch (final XmppConnectionService.BlockedMediaException e) {
849 message.setRelativeFilePath(null);
850 message.setDeleted(true);
851 }
852 }
853
854 private String getDisplayNameFromUri(final Uri uri) {
855 final String[] projection = {OpenableColumns.DISPLAY_NAME};
856 String filename = null;
857 try (final Cursor cursor =
858 mXmppConnectionService
859 .getContentResolver()
860 .query(uri, projection, null, null, null)) {
861 if (cursor != null && cursor.moveToFirst()) {
862 filename = cursor.getString(0);
863 }
864 } catch (final Exception e) {
865 filename = null;
866 }
867 return filename;
868 }
869
870 private String getExtensionFromUri(final Uri uri) {
871 final String[] projection = {MediaStore.MediaColumns.DATA};
872 String filename = null;
873 try (final Cursor cursor =
874 mXmppConnectionService
875 .getContentResolver()
876 .query(uri, projection, null, null, null)) {
877 if (cursor != null && cursor.moveToFirst()) {
878 filename = cursor.getString(0);
879 }
880 } catch (final Exception e) {
881 filename = null;
882 }
883 if (filename == null) {
884 final List<String> segments = uri.getPathSegments();
885 if (segments.size() > 0) {
886 filename = segments.get(segments.size() - 1);
887 }
888 }
889 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
890 return pos > 0 ? filename.substring(pos + 1) : null;
891 }
892
893 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
894 throws FileCopyException, ImageCompressionException {
895 final File parent = file.getParentFile();
896 if (parent != null && parent.mkdirs()) {
897 Log.d(Config.LOGTAG, "created parent directory");
898 }
899 InputStream is = null;
900 OutputStream os = null;
901 try {
902 if (!file.exists() && !file.createNewFile()) {
903 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
904 }
905 is = mXmppConnectionService.getContentResolver().openInputStream(image);
906 if (is == null) {
907 throw new FileCopyException(R.string.error_not_an_image_file);
908 }
909 final Bitmap originalBitmap;
910 final BitmapFactory.Options options = new BitmapFactory.Options();
911 final int inSampleSize = (int) Math.pow(2, sampleSize);
912 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
913 options.inSampleSize = inSampleSize;
914 originalBitmap = BitmapFactory.decodeStream(is, null, options);
915 is.close();
916 if (originalBitmap == null) {
917 throw new ImageCompressionException("Source file was not an image");
918 }
919 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
920 originalBitmap.recycle();
921 throw new ImageCompressionException("Source file had alpha channel");
922 }
923 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
924 final int rotation = getRotation(image);
925 scaledBitmap = rotate(scaledBitmap, rotation);
926 boolean targetSizeReached = false;
927 int quality = Config.IMAGE_QUALITY;
928 final int imageMaxSize =
929 mXmppConnectionService
930 .getResources()
931 .getInteger(R.integer.auto_accept_filesize);
932 while (!targetSizeReached) {
933 os = new FileOutputStream(file);
934 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
935 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
936 if (!success) {
937 throw new FileCopyException(R.string.error_compressing_image);
938 }
939 os.flush();
940 final long fileSize = file.length();
941 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
942 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
943 quality -= 5;
944 }
945 scaledBitmap.recycle();
946 } catch (final FileNotFoundException e) {
947 cleanup(file);
948 throw new FileCopyException(R.string.error_file_not_found);
949 } catch (final IOException e) {
950 cleanup(file);
951 throw new FileCopyException(R.string.error_io_exception);
952 } catch (SecurityException e) {
953 cleanup(file);
954 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
955 } catch (final OutOfMemoryError e) {
956 ++sampleSize;
957 if (sampleSize <= 3) {
958 copyImageToPrivateStorage(file, image, sampleSize);
959 } else {
960 throw new FileCopyException(R.string.error_out_of_memory);
961 }
962 } finally {
963 close(os);
964 close(is);
965 }
966 }
967
968 private static void cleanup(final File file) {
969 try {
970 file.delete();
971 } catch (Exception e) {
972
973 }
974 }
975
976 public void copyImageToPrivateStorage(File file, Uri image)
977 throws FileCopyException, ImageCompressionException {
978 Log.d(
979 Config.LOGTAG,
980 "copy image ("
981 + image.toString()
982 + ") to private storage "
983 + file.getAbsolutePath());
984 copyImageToPrivateStorage(file, image, 0);
985 }
986
987 public void copyImageToPrivateStorage(Message message, Uri image)
988 throws FileCopyException, ImageCompressionException {
989 final String filename;
990 switch (Config.IMAGE_FORMAT) {
991 case JPEG:
992 filename = String.format("%s.%s", message.getUuid(), "jpg");
993 break;
994 case PNG:
995 filename = String.format("%s.%s", message.getUuid(), "png");
996 break;
997 case WEBP:
998 filename = String.format("%s.%s", message.getUuid(), "webp");
999 break;
1000 default:
1001 throw new IllegalStateException("Unknown image format");
1002 }
1003 setupRelativeFilePath(message, filename);
1004 final File tmp = getFile(message);
1005 copyImageToPrivateStorage(tmp, image);
1006 final String extension = MimeUtils.extractRelevantExtension(filename);
1007 try {
1008 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
1009 } catch (final FileNotFoundException e) {
1010 throw new FileCopyException(R.string.error_file_not_found);
1011 } catch (final IOException e) {
1012 throw new FileCopyException(R.string.error_io_exception);
1013 } catch (final XmppConnectionService.BlockedMediaException e) {
1014 tmp.delete();
1015 message.setRelativeFilePath(null);
1016 message.setDeleted(true);
1017 return;
1018 }
1019 tmp.renameTo(getFile(message));
1020 updateFileParams(message, null, false);
1021 }
1022
1023 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1024 try {
1025 setupRelativeFilePath(message, openInputStream(uri), extension);
1026 } catch (final FileNotFoundException e) {
1027 throw new FileCopyException(R.string.error_file_not_found);
1028 } catch (final IOException e) {
1029 throw new FileCopyException(R.string.error_io_exception);
1030 }
1031 }
1032
1033 public Cid[] calculateCids(final Uri uri) throws IOException {
1034 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1035 }
1036
1037 public Cid[] calculateCids(final InputStream is) throws IOException {
1038 try {
1039 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1040 } catch (final NoSuchAlgorithmException e) {
1041 throw new AssertionError(e);
1042 }
1043 }
1044
1045 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1046 message.setRelativeFilePath(getStorageLocation(message, is, extension).getAbsolutePath());
1047 }
1048
1049 public void setupRelativeFilePath(final Message message, final String filename) {
1050 final String extension = MimeUtils.extractRelevantExtension(filename);
1051 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1052 setupRelativeFilePath(message, filename, mime);
1053 }
1054
1055 public File getStorageLocation(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1056 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1057 Cid[] cids = calculateCids(is);
1058 String base = cids[0].toString();
1059
1060 File file = null;
1061 while (file == null || (file.exists() && !file.canRead())) {
1062 file = getStorageLocation(message, String.format("%s.%s", base, extension), mime);
1063 base += "_";
1064 }
1065 for (int i = 0; i < cids.length; i++) {
1066 mXmppConnectionService.saveCid(cids[i], file);
1067 }
1068 return file;
1069 }
1070
1071 public File getStorageLocation(final Message message, final String filename, final String mime) {
1072 final File parentDirectory;
1073 if (Strings.isNullOrEmpty(mime)) {
1074 parentDirectory =
1075 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1076 } else if (mime.startsWith("image/")) {
1077 parentDirectory =
1078 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1079 } else if (mime.startsWith("video/")) {
1080 parentDirectory =
1081 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1082 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1083 parentDirectory =
1084 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1085 } else {
1086 parentDirectory =
1087 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1088 }
1089 final File appDirectory =
1090 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1091 if (message == null || message.getStatus() == Message.STATUS_DUMMY || (message.getConversation() instanceof Conversation && ((Conversation) message.getConversation()).storeInCache())) {
1092 final var mediaCache = new File(mXmppConnectionService.getCacheDir(), "/media");
1093 return new File(mediaCache, filename);
1094 } else {
1095 return new File(appDirectory, filename);
1096 }
1097 }
1098
1099 public static boolean inConversationsDirectory(final Context context, String path) {
1100 final File fileDirectory = new File(path).getParentFile();
1101 for (final String type : STORAGE_TYPES) {
1102 final File typeDirectory =
1103 new File(
1104 Environment.getExternalStoragePublicDirectory(type),
1105 context.getString(R.string.app_name));
1106 if (typeDirectory.equals(fileDirectory)) {
1107 return true;
1108 }
1109 }
1110 return false;
1111 }
1112
1113 public void setupRelativeFilePath(
1114 final Message message, final String filename, final String mime) {
1115 final File file = getStorageLocation(message, filename, mime);
1116 message.setRelativeFilePath(file.getAbsolutePath());
1117 }
1118
1119 public boolean unusualBounds(final Uri image) {
1120 try {
1121 final BitmapFactory.Options options = new BitmapFactory.Options();
1122 options.inJustDecodeBounds = true;
1123 final InputStream inputStream =
1124 mXmppConnectionService.getContentResolver().openInputStream(image);
1125 BitmapFactory.decodeStream(inputStream, null, options);
1126 close(inputStream);
1127 float ratio = (float) options.outHeight / options.outWidth;
1128 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1129 } catch (final Exception e) {
1130 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1131 return false;
1132 }
1133 }
1134
1135 private int getRotation(final File file) {
1136 try (final InputStream inputStream = new FileInputStream(file)) {
1137 return getRotation(inputStream);
1138 } catch (Exception e) {
1139 return 0;
1140 }
1141 }
1142
1143 private int getRotation(final Uri image) {
1144 try (final InputStream is =
1145 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1146 return is == null ? 0 : getRotation(is);
1147 } catch (final Exception e) {
1148 return 0;
1149 }
1150 }
1151
1152 private static int getRotation(final InputStream inputStream) throws IOException {
1153 final ExifInterface exif = new ExifInterface(inputStream);
1154 final int orientation =
1155 exif.getAttributeInt(
1156 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1157 switch (orientation) {
1158 case ExifInterface.ORIENTATION_ROTATE_180:
1159 return 180;
1160 case ExifInterface.ORIENTATION_ROTATE_90:
1161 return 90;
1162 case ExifInterface.ORIENTATION_ROTATE_270:
1163 return 270;
1164 default:
1165 return 0;
1166 }
1167 }
1168
1169 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1170 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1171 if (thumbs != null && !thumbs.isEmpty()) {
1172 for (final var thumb : thumbs) {
1173 final var uriS = thumb.getAttribute("uri");
1174 if (uriS == null) continue;
1175 Uri uri = Uri.parse(uriS);
1176 if (uri.getScheme().equals("data")) {
1177 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1178
1179 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1180 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1181 if (cached != null || cacheOnly) return cached;
1182
1183 byte[] data;
1184 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1185 String[] parts2 = parts[0].split(";", 2);
1186 parts[0] = parts2[0];
1187 data = Base64.decode(parts[1], 0);
1188 } else {
1189 try {
1190 data = parts[1].getBytes("UTF-8");
1191 } catch (final IOException e) {
1192 data = new byte[0];
1193 }
1194 }
1195
1196 if (parts[0].equals("image/blurhash")) {
1197 int width = message.getFileParams().width;
1198 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1199 if (width < 1) width = 1920;
1200
1201 int height = message.getFileParams().height;
1202 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1203 if (height < 1) height = 1080;
1204 Rect r = rectForSize(width, height, size);
1205
1206 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1207 if (blurhash != null) {
1208 cached = new BitmapDrawable(blurhash);
1209 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1210 return cached;
1211 }
1212 } else if (parts[0].equals("image/thumbhash")) {
1213 ThumbHash.Image image;
1214 try {
1215 image = ThumbHash.thumbHashToRGBA(data);
1216 } catch (final Exception e) {
1217 continue;
1218 }
1219 int[] pixels = new int[image.width * image.height];
1220 for (int i = 0; i < pixels.length; i++) {
1221 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);
1222 }
1223 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1224 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1225 return cached;
1226 }
1227 }
1228 }
1229 }
1230
1231 return null;
1232 }
1233
1234 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1235 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1236 DownloadableFile file = getFile(message);
1237 Drawable thumbnail = cache.get(file.getAbsolutePath());
1238 if (thumbnail != null) return thumbnail;
1239
1240 if ((thumbnail == null) && (!cacheOnly)) {
1241 synchronized (THUMBNAIL_LOCK) {
1242 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1243 if (thumbs != null && !thumbs.isEmpty()) {
1244 for (final var thumb : thumbs) {
1245 final var uriS = thumb.getAttribute("uri");
1246 if (uriS == null) continue;
1247 Uri uri = Uri.parse(uriS);
1248 if (uri.getScheme().equals("data")) {
1249 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1250 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1251
1252 byte[] data;
1253 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1254 String[] parts2 = parts[0].split(";", 2);
1255 parts[0] = parts2[0];
1256 data = Base64.decode(parts[1], 0);
1257 } else {
1258 data = parts[1].getBytes("UTF-8");
1259 }
1260
1261 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1262 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1263
1264 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1265 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1266 int w = info.getSize().getWidth();
1267 int h = info.getSize().getHeight();
1268 Rect r = rectForSize(w, h, size);
1269 decoder.setTargetSize(r.width(), r.height());
1270 });
1271
1272 if (thumbnail != null && file.getAbsolutePath() != null) {
1273 cache.put(file.getAbsolutePath(), thumbnail);
1274 return thumbnail;
1275 }
1276 } else if (uri.getScheme().equals("cid")) {
1277 Cid cid = BobTransfer.cid(uri);
1278 if (cid == null) continue;
1279 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1280 if (f != null && f.canRead()) {
1281 return getThumbnail(f, res, size, cacheOnly);
1282 }
1283 }
1284 }
1285 }
1286 }
1287 }
1288
1289 return getThumbnail(file, res, size, cacheOnly);
1290 }
1291
1292 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1293 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1294 }
1295
1296 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1297 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1298 Drawable thumbnail = cache.get(cacheKey);
1299 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1300 synchronized (THUMBNAIL_LOCK) {
1301 thumbnail = cache.get(cacheKey);
1302 if (thumbnail != null) {
1303 return thumbnail;
1304 }
1305 final String mime = file.getMimeType();
1306 if ("image/svg+xml".equals(mime)) {
1307 thumbnail = getSVG(file, size);
1308 } else if ("application/pdf".equals(mime)) {
1309 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1310 } else if (mime.startsWith("video/")) {
1311 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1312 } else {
1313 thumbnail = getImagePreview(file, res, size, mime);
1314 if (thumbnail == null) {
1315 throw new FileNotFoundException();
1316 }
1317 }
1318 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1319 }
1320 }
1321 return thumbnail;
1322 }
1323
1324 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1325 final Drawable drawable = getThumbnail(message, res, size, false);
1326 if (drawable == null) return null;
1327 return drawDrawable(drawable);
1328 }
1329
1330 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1331 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1332 if (drawable == null) return null;
1333 return drawDrawable(drawable);
1334 }
1335
1336 public static Rect rectForSize(int w, int h, int size) {
1337 int scalledW;
1338 int scalledH;
1339 if (w <= h) {
1340 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1341 scalledH = size;
1342 } else {
1343 scalledW = size;
1344 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1345 }
1346
1347 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1348
1349 return new Rect(0, 0, scalledW, scalledH);
1350 }
1351
1352 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1353 if (android.os.Build.VERSION.SDK_INT >= 28) {
1354 ImageDecoder.Source source = ImageDecoder.createSource(file);
1355 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1356 int w = info.getSize().getWidth();
1357 int h = info.getSize().getHeight();
1358 Rect r = rectForSize(w, h, size);
1359 decoder.setTargetSize(r.width(), r.height());
1360 });
1361 } else {
1362 BitmapFactory.Options options = new BitmapFactory.Options();
1363 options.inSampleSize = calcSampleSize(file, size);
1364 Bitmap bitmap = null;
1365 try {
1366 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1367 } catch (OutOfMemoryError e) {
1368 options.inSampleSize *= 2;
1369 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1370 }
1371 if (bitmap == null) return null;
1372
1373 bitmap = resize(bitmap, size);
1374 bitmap = rotate(bitmap, getRotation(file));
1375 if (mime.equals("image/gif")) {
1376 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1377 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1378 bitmap.recycle();
1379 bitmap = withGifOverlay;
1380 }
1381 return new BitmapDrawable(res, bitmap);
1382 }
1383 }
1384
1385 public static Bitmap drawDrawable(Drawable drawable) {
1386 if (drawable == null) return null;
1387
1388 Bitmap bitmap = null;
1389
1390 if (drawable instanceof BitmapDrawable) {
1391 bitmap = ((BitmapDrawable) drawable).getBitmap();
1392 if (bitmap != null) return bitmap;
1393 }
1394
1395 Rect bounds = drawable.getBounds();
1396 int width = drawable.getIntrinsicWidth();
1397 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1398 int height = drawable.getIntrinsicHeight();
1399 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1400
1401 if (width < 1) {
1402 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1403 width = 48;
1404 }
1405 if (height < 1) {
1406 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1407 height = 48;
1408 }
1409
1410 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1411 Canvas canvas = new Canvas(bitmap);
1412 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1413 drawable.draw(canvas);
1414 return bitmap;
1415 }
1416
1417 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1418 Bitmap overlay =
1419 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1420 Canvas canvas = new Canvas(bitmap);
1421 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1422 Log.d(
1423 Config.LOGTAG,
1424 "target size overlay: "
1425 + targetSize
1426 + " overlay bitmap size was "
1427 + overlay.getHeight());
1428 float left = (canvas.getWidth() - targetSize) / 2.0f;
1429 float top = (canvas.getHeight() - targetSize) / 2.0f;
1430 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1431 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1432 }
1433
1434 /** https://stackoverflow.com/a/3943023/210897 */
1435 private boolean paintOverlayBlack(final Bitmap bitmap) {
1436 final int h = bitmap.getHeight();
1437 final int w = bitmap.getWidth();
1438 int record = 0;
1439 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1440 for (int x = Math.round(w * IGNORE_PADDING);
1441 x < w - Math.round(w * IGNORE_PADDING);
1442 ++x) {
1443 int pixel = bitmap.getPixel(x, y);
1444 if ((Color.red(pixel) * 0.299
1445 + Color.green(pixel) * 0.587
1446 + Color.blue(pixel) * 0.114)
1447 > 186) {
1448 --record;
1449 } else {
1450 ++record;
1451 }
1452 }
1453 }
1454 return record < 0;
1455 }
1456
1457 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1458 final int h = bitmap.getHeight();
1459 final int w = bitmap.getWidth();
1460 int white = 0;
1461 for (int y = 0; y < h; ++y) {
1462 for (int x = 0; x < w; ++x) {
1463 int pixel = bitmap.getPixel(x, y);
1464 if ((Color.red(pixel) * 0.299
1465 + Color.green(pixel) * 0.587
1466 + Color.blue(pixel) * 0.114)
1467 > 186) {
1468 white++;
1469 }
1470 }
1471 }
1472 return white > (h * w * 0.4f);
1473 }
1474
1475 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1476 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1477 Bitmap frame;
1478 try {
1479 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1480 frame = metadataRetriever.getFrameAtTime(0);
1481 metadataRetriever.release();
1482 return cropCenterSquare(frame, size);
1483 } catch (Exception e) {
1484 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1485 frame.eraseColor(0xff000000);
1486 return frame;
1487 }
1488 }
1489
1490 private Bitmap getVideoPreview(final File file, final int size) {
1491 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1492 Bitmap frame;
1493 try {
1494 metadataRetriever.setDataSource(file.getAbsolutePath());
1495 frame = metadataRetriever.getFrameAtTime(0);
1496 metadataRetriever.release();
1497 frame = resize(frame, size);
1498 } catch (IOException | RuntimeException e) {
1499 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1500 frame.eraseColor(0xff000000);
1501 }
1502 drawOverlay(
1503 frame,
1504 paintOverlayBlack(frame)
1505 ? R.drawable.play_video_black
1506 : R.drawable.play_video_white,
1507 0.75f);
1508 return frame;
1509 }
1510
1511 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1512 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1513 try {
1514 final ParcelFileDescriptor fileDescriptor =
1515 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1516 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1517 drawOverlay(
1518 rendered,
1519 paintOverlayBlackPdf(rendered)
1520 ? R.drawable.open_pdf_black
1521 : R.drawable.open_pdf_white,
1522 0.75f);
1523 return rendered;
1524 } catch (final IOException | SecurityException e) {
1525 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1526 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1527 placeholder.eraseColor(0xff000000);
1528 return placeholder;
1529 }
1530 }
1531
1532 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1533 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1534 try {
1535 ParcelFileDescriptor fileDescriptor =
1536 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1537 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1538 return cropCenterSquare(bitmap, size);
1539 } catch (Exception e) {
1540 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1541 placeholder.eraseColor(0xff000000);
1542 return placeholder;
1543 }
1544 }
1545
1546 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1547 private Bitmap renderPdfDocument(
1548 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1549 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1550 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1551 final Dimensions dimensions =
1552 scalePdfDimensions(
1553 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1554 final Bitmap rendered =
1555 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1556 rendered.eraseColor(0xffffffff);
1557 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1558 page.close();
1559 pdfRenderer.close();
1560 fileDescriptor.close();
1561 return rendered;
1562 }
1563
1564 public Uri getTakePhotoUri() {
1565 final String filename =
1566 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1567 final File directory;
1568 if (Config.ONLY_INTERNAL_STORAGE) {
1569 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1570 } else {
1571 directory =
1572 new File(
1573 Environment.getExternalStoragePublicDirectory(
1574 Environment.DIRECTORY_DCIM),
1575 "Camera");
1576 }
1577 final File file = new File(directory, filename);
1578 file.getParentFile().mkdirs();
1579 return getUriForFile(mXmppConnectionService, file);
1580 }
1581
1582 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1583
1584 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1585 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1586 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1587 return uncompressAvatar.first;
1588 }
1589 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1590 Log.d(
1591 Config.LOGTAG,
1592 "uncompressed avatar exceeded char limit by "
1593 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1594 }
1595
1596 Bitmap bm = cropCenterSquare(image, size);
1597 if (bm == null) {
1598 return null;
1599 }
1600 if (hasAlpha(bm)) {
1601 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1602 bm.recycle();
1603 bm = cropCenterSquare(image, 96);
1604 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1605 }
1606 return getPepAvatar(bm, format, 100);
1607 }
1608
1609 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1610 try {
1611 if (android.os.Build.VERSION.SDK_INT >= 28) {
1612 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1613 int[] size = new int[] { 0, 0 };
1614 boolean[] animated = new boolean[] { false };
1615 String[] mimeType = new String[] { null };
1616 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1617 mimeType[0] = info.getMimeType();
1618 animated[0] = info.isAnimated();
1619 size[0] = info.getSize().getWidth();
1620 size[1] = info.getSize().getHeight();
1621 });
1622
1623 if (animated[0]) {
1624 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1625 if (avatar != null) return new Pair(avatar, true);
1626 }
1627
1628 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1629 } else {
1630 Bitmap bitmap =
1631 BitmapFactory.decodeStream(
1632 mXmppConnectionService.getContentResolver().openInputStream(uri));
1633 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1634 }
1635 } catch (Exception e) {
1636 try {
1637 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1638 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1639 } catch (Exception e2) {
1640 return null;
1641 }
1642 }
1643 }
1644
1645 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1646 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1647 if (fd.getLength() > 100000) return null; // Too big to use raw file
1648
1649 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1650 Base64OutputStream mBase64OutputStream =
1651 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1652 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1653 DigestOutputStream mDigestOutputStream =
1654 new DigestOutputStream(mBase64OutputStream, digest);
1655
1656 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1657 mDigestOutputStream.flush();
1658 mDigestOutputStream.close();
1659
1660 final Avatar avatar = new Avatar();
1661 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1662 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1663 avatar.type = mimeType;
1664 avatar.width = width;
1665 avatar.height = height;
1666 return avatar;
1667 }
1668
1669 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1670 try {
1671 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1672 Base64OutputStream mBase64OutputStream =
1673 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1674 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1675 DigestOutputStream mDigestOutputStream =
1676 new DigestOutputStream(mBase64OutputStream, digest);
1677 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1678 return null;
1679 }
1680 mDigestOutputStream.flush();
1681 mDigestOutputStream.close();
1682 long chars = mByteArrayOutputStream.size();
1683 if (format != Bitmap.CompressFormat.PNG
1684 && quality >= 50
1685 && chars >= Config.AVATAR_CHAR_LIMIT) {
1686 int q = quality - 2;
1687 Log.d(
1688 Config.LOGTAG,
1689 "avatar char length was " + chars + " reducing quality to " + q);
1690 return getPepAvatar(bitmap, format, q);
1691 }
1692 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1693 final Avatar avatar = new Avatar();
1694 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1695 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1696 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1697 avatar.type = "image/webp";
1698 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1699 avatar.type = "image/jpeg";
1700 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1701 avatar.type = "image/png";
1702 }
1703 avatar.width = bitmap.getWidth();
1704 avatar.height = bitmap.getHeight();
1705 return avatar;
1706 } catch (OutOfMemoryError e) {
1707 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1708 return null;
1709 } catch (Exception e) {
1710 return null;
1711 }
1712 }
1713
1714 public Avatar getStoredPepAvatar(String hash) {
1715 if (hash == null) {
1716 return null;
1717 }
1718 Avatar avatar = new Avatar();
1719 final File file = getAvatarFile(hash);
1720 FileInputStream is = null;
1721 try {
1722 avatar.size = file.length();
1723 BitmapFactory.Options options = new BitmapFactory.Options();
1724 options.inJustDecodeBounds = true;
1725 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1726 is = new FileInputStream(file);
1727 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1728 Base64OutputStream mBase64OutputStream =
1729 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1730 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1731 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1732 byte[] buffer = new byte[4096];
1733 int length;
1734 while ((length = is.read(buffer)) > 0) {
1735 os.write(buffer, 0, length);
1736 }
1737 os.flush();
1738 os.close();
1739 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1740 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1741 avatar.height = options.outHeight;
1742 avatar.width = options.outWidth;
1743 avatar.type = options.outMimeType;
1744 return avatar;
1745 } catch (NoSuchAlgorithmException | IOException e) {
1746 return null;
1747 } finally {
1748 close(is);
1749 }
1750 }
1751
1752 public boolean isAvatarCached(Avatar avatar) {
1753 final File file = getAvatarFile(avatar.getFilename());
1754 return file.exists();
1755 }
1756
1757 public boolean save(final Avatar avatar) {
1758 File file;
1759 if (isAvatarCached(avatar)) {
1760 file = getAvatarFile(avatar.getFilename());
1761 avatar.size = file.length();
1762 } else {
1763 file =
1764 new File(
1765 mXmppConnectionService.getCacheDir().getAbsolutePath()
1766 + "/"
1767 + UUID.randomUUID().toString());
1768 if (file.getParentFile().mkdirs()) {
1769 Log.d(Config.LOGTAG, "created cache directory");
1770 }
1771 OutputStream os = null;
1772 try {
1773 if (!file.createNewFile()) {
1774 Log.d(
1775 Config.LOGTAG,
1776 "unable to create temporary file " + file.getAbsolutePath());
1777 }
1778 os = new FileOutputStream(file);
1779 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1780 digest.reset();
1781 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1782 final byte[] bytes = avatar.getImageAsBytes();
1783 mDigestOutputStream.write(bytes);
1784 mDigestOutputStream.flush();
1785 mDigestOutputStream.close();
1786 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1787 if (sha1sum.equals(avatar.sha1sum)) {
1788 final File outputFile = getAvatarFile(avatar.getFilename());
1789 if (outputFile.getParentFile().mkdirs()) {
1790 Log.d(Config.LOGTAG, "created avatar directory");
1791 }
1792 final File avatarFile = getAvatarFile(avatar.getFilename());
1793 if (!file.renameTo(avatarFile)) {
1794 Log.d(
1795 Config.LOGTAG,
1796 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1797 return false;
1798 }
1799 } else {
1800 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1801 if (!file.delete()) {
1802 Log.d(Config.LOGTAG, "unable to delete temporary file");
1803 }
1804 return false;
1805 }
1806 avatar.size = bytes.length;
1807 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1808 return false;
1809 } finally {
1810 close(os);
1811 }
1812 }
1813 return true;
1814 }
1815
1816 public void deleteHistoricAvatarPath() {
1817 delete(getHistoricAvatarPath());
1818 }
1819
1820 private void delete(final File file) {
1821 if (file.isDirectory()) {
1822 final File[] files = file.listFiles();
1823 if (files != null) {
1824 for (final File f : files) {
1825 delete(f);
1826 }
1827 }
1828 }
1829 if (file.delete()) {
1830 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1831 }
1832 }
1833
1834 private File getHistoricAvatarPath() {
1835 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1836 }
1837
1838 public File getAvatarFile(String avatar) {
1839 final var f = new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1840 try {
1841 if (f.exists()) java.nio.file.Files.setAttribute(f.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
1842 } catch (final IOException e) {
1843 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + f);
1844 }
1845 return f;
1846 }
1847
1848 public Uri getAvatarUri(String avatar) {
1849 return Uri.fromFile(getAvatarFile(avatar));
1850 }
1851
1852 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1853 if (android.os.Build.VERSION.SDK_INT >= 28) {
1854 try {
1855 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1856 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1857 int w = info.getSize().getWidth();
1858 int h = info.getSize().getHeight();
1859 Rect r = rectForSize(w, h, size);
1860 decoder.setTargetSize(r.width(), r.height());
1861
1862 int newSize = Math.min(r.width(), r.height());
1863 int left = (r.width() - newSize) / 2;
1864 int top = (r.height() - newSize) / 2;
1865 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1866 });
1867 } catch (final IOException e) {
1868 return getSVGSquare(image, size);
1869 }
1870 } else {
1871 Bitmap bitmap = cropCenterSquare(image, size);
1872 return bitmap == null ? null : new BitmapDrawable(bitmap);
1873 }
1874 }
1875
1876 public Bitmap cropCenterSquare(Uri image, int size) {
1877 if (image == null) {
1878 return null;
1879 }
1880 InputStream is = null;
1881 try {
1882 BitmapFactory.Options options = new BitmapFactory.Options();
1883 options.inSampleSize = calcSampleSize(image, size);
1884 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1885 if (is == null) {
1886 return null;
1887 }
1888 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1889 if (input == null) {
1890 return null;
1891 } else {
1892 input = rotate(input, getRotation(image));
1893 return cropCenterSquare(input, size);
1894 }
1895 } catch (FileNotFoundException | SecurityException e) {
1896 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1897 return null;
1898 } finally {
1899 close(is);
1900 }
1901 }
1902
1903 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1904 if (image == null) {
1905 return null;
1906 }
1907 InputStream is = null;
1908 try {
1909 BitmapFactory.Options options = new BitmapFactory.Options();
1910 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1911 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1912 if (is == null) {
1913 return null;
1914 }
1915 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1916 if (source == null) {
1917 return null;
1918 }
1919 int sourceWidth = source.getWidth();
1920 int sourceHeight = source.getHeight();
1921 float xScale = (float) newWidth / sourceWidth;
1922 float yScale = (float) newHeight / sourceHeight;
1923 float scale = Math.max(xScale, yScale);
1924 float scaledWidth = scale * sourceWidth;
1925 float scaledHeight = scale * sourceHeight;
1926 float left = (newWidth - scaledWidth) / 2;
1927 float top = (newHeight - scaledHeight) / 2;
1928
1929 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1930 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1931 Canvas canvas = new Canvas(dest);
1932 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1933 if (source.isRecycled()) {
1934 source.recycle();
1935 }
1936 return dest;
1937 } catch (SecurityException e) {
1938 return null; // android 6.0 with revoked permissions for example
1939 } catch (FileNotFoundException e) {
1940 return null;
1941 } finally {
1942 close(is);
1943 }
1944 }
1945
1946 public Bitmap cropCenterSquare(Bitmap input, int size) {
1947 int w = input.getWidth();
1948 int h = input.getHeight();
1949
1950 float scale = Math.max((float) size / h, (float) size / w);
1951
1952 float outWidth = scale * w;
1953 float outHeight = scale * h;
1954 float left = (size - outWidth) / 2;
1955 float top = (size - outHeight) / 2;
1956 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1957
1958 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1959 Canvas canvas = new Canvas(output);
1960 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1961 if (!input.isRecycled()) {
1962 input.recycle();
1963 }
1964 return output;
1965 }
1966
1967 private int calcSampleSize(Uri image, int size)
1968 throws FileNotFoundException, SecurityException {
1969 final BitmapFactory.Options options = new BitmapFactory.Options();
1970 options.inJustDecodeBounds = true;
1971 final InputStream inputStream =
1972 mXmppConnectionService.getContentResolver().openInputStream(image);
1973 BitmapFactory.decodeStream(inputStream, null, options);
1974 close(inputStream);
1975 return calcSampleSize(options, size);
1976 }
1977
1978 public void updateFileParams(Message message) {
1979 updateFileParams(message, null);
1980 }
1981
1982 public void updateFileParams(final Message message, final String url) {
1983 updateFileParams(message, url, true);
1984 }
1985
1986 public void updateFileParams(final Message message, String url, boolean updateCids) {
1987 final boolean encrypted =
1988 message.getEncryption() == Message.ENCRYPTION_PGP
1989 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1990 final DownloadableFile file = getFile(message);
1991 final String mime = file.getMimeType();
1992 final boolean privateMessage = message.isPrivateMessage();
1993 final boolean image =
1994 message.getType() == Message.TYPE_IMAGE
1995 || (mime != null && mime.startsWith("image/"));
1996 Message.FileParams fileParams = message.getFileParams();
1997 if (fileParams == null) fileParams = new Message.FileParams();
1998 Cid[] cids = new Cid[0];
1999 try {
2000 cids = calculateCids(new FileInputStream(file));
2001 fileParams.setCids(List.of(cids));
2002 } catch (final IOException | NoSuchAlgorithmException e) { }
2003 if (url == null) {
2004 for (Cid cid : cids) {
2005 url = mXmppConnectionService.getUrlForCid(cid);
2006 if (url != null) {
2007 fileParams.url = url;
2008 break;
2009 }
2010 }
2011 } else {
2012 fileParams.url = url;
2013 }
2014 if (fileParams.getName() == null) fileParams.setName(file.getName());
2015 fileParams.setMediaType(mime);
2016 if (encrypted && !file.exists()) {
2017 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
2018 final DownloadableFile encryptedFile = getFile(message, false);
2019 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
2020 } else {
2021 Log.d(Config.LOGTAG, "running updateFileParams");
2022 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
2023 final boolean video = mime != null && mime.startsWith("video/");
2024 final boolean audio = mime != null && mime.startsWith("audio/");
2025 final boolean pdf = "application/pdf".equals(mime);
2026 if (file.canRead()) fileParams.size = file.getSize();
2027 if (ambiguous) {
2028 try {
2029 final Dimensions dimensions = getVideoDimensions(file);
2030 if (dimensions.valid()) {
2031 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
2032 fileParams.width = dimensions.width;
2033 fileParams.height = dimensions.height;
2034 } else {
2035 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2036 fileParams.runtime = getMediaRuntime(file);
2037 }
2038 } catch (final IOException | NotAVideoFile e) {
2039 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2040 fileParams.runtime = getMediaRuntime(file);
2041 }
2042 } else if (image || video || pdf) {
2043 try {
2044 final Dimensions dimensions;
2045 if (video) {
2046 dimensions = getVideoDimensions(file);
2047 } else if (pdf) {
2048 dimensions = getPdfDocumentDimensions(file);
2049 } else if ("image/svg+xml".equals(mime)) {
2050 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2051 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2052 } else {
2053 dimensions = getImageDimensions(file);
2054 }
2055 if (dimensions.valid()) {
2056 fileParams.width = dimensions.width;
2057 fileParams.height = dimensions.height;
2058 }
2059 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2060 Log.d(
2061 Config.LOGTAG,
2062 "file with mime type " + file.getMimeType() + " was not a video file");
2063 // fall threw
2064 }
2065 } else if (audio) {
2066 fileParams.runtime = getMediaRuntime(file);
2067 }
2068 if ("application/xdc+zip".equals(mime)) {
2069 try {
2070 final var zip = new ZipFile(file);
2071 final ZipEntry manifestEntry = zip == null ? null : zip.getEntry("manifest.toml");
2072 if (manifestEntry != null) {
2073 final var manifest = Toml.parse(zip.getInputStream(manifestEntry));
2074 if (manifest != null) {
2075 final var name = manifest.getString("name");
2076 if (name != null) fileParams.setName(name);
2077 }
2078 }
2079 } catch (final IOException e2) { }
2080 }
2081 try {
2082 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2083 if (thumb != null) {
2084 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2085 byte[] rgba = new byte[pixels.length * 4];
2086 try {
2087 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2088 } catch (final IllegalStateException e) {
2089 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2090 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2091 softThumb.recycle();
2092 }
2093 for (int i = 0; i < pixels.length; i++) {
2094 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2095 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2096 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2097 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2098 }
2099 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2100 }
2101 } catch (final IOException e) { }
2102 }
2103 message.setFileParams(fileParams);
2104 message.setDeleted(false);
2105 message.setType(
2106 privateMessage
2107 ? Message.TYPE_PRIVATE_FILE
2108 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2109
2110 if (updateCids) {
2111 try {
2112 for (int i = 0; i < cids.length; i++) {
2113 mXmppConnectionService.saveCid(cids[i], file);
2114 }
2115 } catch (XmppConnectionService.BlockedMediaException e) { }
2116 }
2117 }
2118
2119 private int getMediaRuntime(final File file) {
2120 try {
2121 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2122 mediaMetadataRetriever.setDataSource(file.toString());
2123 final String value =
2124 mediaMetadataRetriever.extractMetadata(
2125 MediaMetadataRetriever.METADATA_KEY_DURATION);
2126 if (Strings.isNullOrEmpty(value)) {
2127 return 0;
2128 }
2129 return Integer.parseInt(value);
2130 } catch (final Exception e) {
2131 return 0;
2132 }
2133 }
2134
2135 private Dimensions getImageDimensions(File file) {
2136 final BitmapFactory.Options options = new BitmapFactory.Options();
2137 options.inJustDecodeBounds = true;
2138 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2139 final int rotation = getRotation(file);
2140 final boolean rotated = rotation == 90 || rotation == 270;
2141 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2142 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2143 return new Dimensions(imageHeight, imageWidth);
2144 }
2145
2146 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2147 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2148 try {
2149 metadataRetriever.setDataSource(file.getAbsolutePath());
2150 } catch (RuntimeException e) {
2151 throw new NotAVideoFile(e);
2152 }
2153 return getVideoDimensions(metadataRetriever);
2154 }
2155
2156 private Dimensions getPdfDocumentDimensions(final File file) {
2157 final ParcelFileDescriptor fileDescriptor;
2158 try {
2159 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2160 if (fileDescriptor == null) {
2161 return new Dimensions(0, 0);
2162 }
2163 } catch (final FileNotFoundException e) {
2164 return new Dimensions(0, 0);
2165 }
2166 try {
2167 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2168 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2169 final int height = page.getHeight();
2170 final int width = page.getWidth();
2171 page.close();
2172 pdfRenderer.close();
2173 return scalePdfDimensions(new Dimensions(height, width));
2174 } catch (final IOException | SecurityException e) {
2175 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2176 return new Dimensions(0, 0);
2177 }
2178 }
2179
2180 private Dimensions scalePdfDimensions(Dimensions in) {
2181 final DisplayMetrics displayMetrics =
2182 mXmppConnectionService.getResources().getDisplayMetrics();
2183 final int target = (int) (displayMetrics.density * 288);
2184 return scalePdfDimensions(in, target, true);
2185 }
2186
2187 private static Dimensions scalePdfDimensions(
2188 final Dimensions in, final int target, final boolean fit) {
2189 final int w, h;
2190 if (fit == (in.width <= in.height)) {
2191 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2192 h = target;
2193 } else {
2194 w = target;
2195 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2196 }
2197 return new Dimensions(h, w);
2198 }
2199
2200 public Drawable getAvatar(String avatar, int size) {
2201 if (avatar == null) {
2202 return null;
2203 }
2204
2205 if (android.os.Build.VERSION.SDK_INT >= 28) {
2206 try {
2207 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2208 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2209 int w = info.getSize().getWidth();
2210 int h = info.getSize().getHeight();
2211 Rect r = rectForSize(w, h, size);
2212 decoder.setTargetSize(r.width(), r.height());
2213
2214 int newSize = Math.min(r.width(), r.height());
2215 int left = (r.width() - newSize) / 2;
2216 int top = (r.height() - newSize) / 2;
2217 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2218 });
2219 } catch (final IOException e) {
2220 return getSVGSquare(getAvatarUri(avatar), size);
2221 }
2222 } else {
2223 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2224 return bm == null ? null : new BitmapDrawable(bm);
2225 }
2226 }
2227
2228 public Drawable getSVGSquare(Uri uri, int size) {
2229 try {
2230 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2231 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2232
2233 float w = svg.getDocumentWidth();
2234 float h = svg.getDocumentHeight();
2235 float scale = Math.max((float) size / h, (float) size / w);
2236 float outWidth = scale * w;
2237 float outHeight = scale * h;
2238 float left = (size - outWidth) / 2;
2239 float top = (size - outHeight) / 2;
2240 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2241 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2242 svg.setDocumentWidth("100%");
2243 svg.setDocumentHeight("100%");
2244
2245 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2246 Canvas canvas = new Canvas(output);
2247 svg.renderToCanvas(canvas, target);
2248
2249 return new SVGDrawable(output);
2250 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2251 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2252 return null;
2253 }
2254 }
2255
2256 public Drawable getSVG(File file, int size) {
2257 try {
2258 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2259 return drawSVG(svg, size);
2260 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2261 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2262 return null;
2263 }
2264 }
2265
2266 public Drawable drawSVG(SVG svg, int size) {
2267 try {
2268 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2269
2270 float w = svg.getDocumentWidth();
2271 float h = svg.getDocumentHeight();
2272 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2273 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2274 svg.setDocumentWidth("100%");
2275 svg.setDocumentHeight("100%");
2276
2277 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2278 Canvas canvas = new Canvas(output);
2279 svg.renderToCanvas(canvas);
2280
2281 return new SVGDrawable(output);
2282 } catch (final SVGParseException e) {
2283 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2284 return null;
2285 }
2286 }
2287
2288 private static class Dimensions {
2289 public final int width;
2290 public final int height;
2291
2292 Dimensions(int height, int width) {
2293 this.width = width;
2294 this.height = height;
2295 }
2296
2297 public int getMin() {
2298 return Math.min(width, height);
2299 }
2300
2301 public boolean valid() {
2302 return width > 0 && height > 0;
2303 }
2304 }
2305
2306 private static class NotAVideoFile extends Exception {
2307 public NotAVideoFile(Throwable t) {
2308 super(t);
2309 }
2310
2311 public NotAVideoFile() {
2312 super();
2313 }
2314 }
2315
2316 public static class ImageCompressionException extends Exception {
2317
2318 ImageCompressionException(String message) {
2319 super(message);
2320 }
2321 }
2322
2323 public static class FileCopyException extends Exception {
2324 private final int resId;
2325
2326 private FileCopyException(@StringRes int resId) {
2327 this.resId = resId;
2328 }
2329
2330 public @StringRes int getResId() {
2331 return resId;
2332 }
2333 }
2334
2335 public static class SVGDrawable extends BitmapDrawable {
2336 public SVGDrawable(Bitmap bm) { super(bm); }
2337 }
2338}