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) || path.contains(".transforms/synthetic") || !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()) && Build.VERSION.SDK_INT >= 26) {
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 IllegalArgumentException e) {
753 throw new FileCopyException(R.string.error_file_not_found);
754 } catch (final FileNotFoundException e) {
755 throw new FileCopyException(R.string.error_file_not_found);
756 } catch (final FileWriterException e) {
757 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
758 } catch (final SecurityException | IllegalStateException e) {
759 throw new FileCopyException(R.string.error_security_exception);
760 } catch (final IOException e) {
761 throw new FileCopyException(R.string.error_io_exception);
762 }
763 }
764
765 private InputStream openInputStream(Uri uri) throws IOException {
766 if (uri != null && "data".equals(uri.getScheme())) {
767 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
768 byte[] data;
769 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
770 String[] parts2 = parts[0].split(";", 2);
771 parts[0] = parts2[0];
772 data = Base64.decode(parts[1], 0);
773 } else {
774 try {
775 data = parts[1].getBytes("UTF-8");
776 } catch (final IOException e) {
777 data = new byte[0];
778 }
779 }
780 return new ByteArrayInputStream(data);
781 }
782 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
783 if (is == null) throw new FileNotFoundException("File not found");
784 return is;
785 }
786
787 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
788 final var parentDirectory = file.getParentFile();
789 if (parentDirectory != null && parentDirectory.mkdirs()) {
790 Log.d(Config.LOGTAG,"created directory "+parentDirectory.getAbsolutePath());
791 }
792 try {
793 if (!file.createNewFile() && file.length() > 0) {
794 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
795 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
796 }
797 } catch (final IOException e) {
798 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
799 }
800 try (final OutputStream os = new FileOutputStream(file);
801 final InputStream is = openInputStream(uri)) {
802 if (is == null) {
803 throw new FileCopyException(R.string.error_file_not_found);
804 }
805 try {
806 ByteStreams.copy(is, os);
807 } catch (final IOException e) {
808 throw new FileWriterException(file);
809 }
810 try {
811 os.flush();
812 } catch (final IOException e) {
813 throw new FileWriterException(file);
814 }
815 } catch (final FileNotFoundException e) {
816 cleanup(file);
817 throw new FileCopyException(R.string.error_file_not_found);
818 } catch (final FileWriterException e) {
819 cleanup(file);
820 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
821 } catch (final SecurityException | IllegalStateException | IllegalArgumentException e) {
822 cleanup(file);
823 throw new FileCopyException(R.string.error_security_exception);
824 } catch (final IOException e) {
825 cleanup(file);
826 throw new FileCopyException(R.string.error_io_exception);
827 }
828 }
829
830 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
831 throws FileCopyException {
832 final String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
833 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
834 String extension = MimeUtils.guessExtensionFromMimeType(mime);
835 if (extension == null) {
836 Log.d(Config.LOGTAG, "extension from mime type was null");
837 extension = getExtensionFromUri(uri);
838 }
839 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
840 extension = "oga";
841 }
842
843 try {
844 setupRelativeFilePath(message, uri, extension);
845 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
846 final String name = getDisplayNameFromUri(uri);
847 if (name != null) {
848 message.getFileParams().setName(name);
849 }
850 } catch (final XmppConnectionService.BlockedMediaException e) {
851 message.setRelativeFilePath(null);
852 message.setDeleted(true);
853 }
854 }
855
856 private String getDisplayNameFromUri(final Uri uri) {
857 final String[] projection = {OpenableColumns.DISPLAY_NAME};
858 String filename = null;
859 try (final Cursor cursor =
860 mXmppConnectionService
861 .getContentResolver()
862 .query(uri, projection, null, null, null)) {
863 if (cursor != null && cursor.moveToFirst()) {
864 filename = cursor.getString(0);
865 }
866 } catch (final Exception e) {
867 filename = null;
868 }
869 return filename;
870 }
871
872 private String getExtensionFromUri(final Uri uri) {
873 final String[] projection = {MediaStore.MediaColumns.DATA};
874 String filename = null;
875 try (final Cursor cursor =
876 mXmppConnectionService
877 .getContentResolver()
878 .query(uri, projection, null, null, null)) {
879 if (cursor != null && cursor.moveToFirst()) {
880 filename = cursor.getString(0);
881 }
882 } catch (final Exception e) {
883 filename = null;
884 }
885 if (filename == null) {
886 final List<String> segments = uri.getPathSegments();
887 if (segments.size() > 0) {
888 filename = segments.get(segments.size() - 1);
889 }
890 }
891 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
892 return pos > 0 ? filename.substring(pos + 1) : null;
893 }
894
895 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
896 throws FileCopyException, ImageCompressionException {
897 final File parent = file.getParentFile();
898 if (parent != null && parent.mkdirs()) {
899 Log.d(Config.LOGTAG, "created parent directory");
900 }
901 InputStream is = null;
902 OutputStream os = null;
903 try {
904 if (!file.exists() && !file.createNewFile()) {
905 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
906 }
907 is = mXmppConnectionService.getContentResolver().openInputStream(image);
908 if (is == null) {
909 throw new FileCopyException(R.string.error_not_an_image_file);
910 }
911 final Bitmap originalBitmap;
912 final BitmapFactory.Options options = new BitmapFactory.Options();
913 final int inSampleSize = (int) Math.pow(2, sampleSize);
914 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
915 options.inSampleSize = inSampleSize;
916 originalBitmap = BitmapFactory.decodeStream(is, null, options);
917 is.close();
918 if (originalBitmap == null) {
919 throw new ImageCompressionException("Source file was not an image");
920 }
921 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
922 originalBitmap.recycle();
923 throw new ImageCompressionException("Source file had alpha channel");
924 }
925 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
926 final int rotation = getRotation(image);
927 scaledBitmap = rotate(scaledBitmap, rotation);
928 boolean targetSizeReached = false;
929 int quality = Config.IMAGE_QUALITY;
930 final int imageMaxSize =
931 mXmppConnectionService
932 .getResources()
933 .getInteger(R.integer.auto_accept_filesize);
934 while (!targetSizeReached) {
935 os = new FileOutputStream(file);
936 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
937 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
938 if (!success) {
939 throw new FileCopyException(R.string.error_compressing_image);
940 }
941 os.flush();
942 final long fileSize = file.length();
943 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
944 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
945 quality -= 5;
946 }
947 scaledBitmap.recycle();
948 } catch (final FileNotFoundException e) {
949 cleanup(file);
950 throw new FileCopyException(R.string.error_file_not_found);
951 } catch (final IOException e) {
952 cleanup(file);
953 throw new FileCopyException(R.string.error_io_exception);
954 } catch (SecurityException e) {
955 cleanup(file);
956 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
957 } catch (final OutOfMemoryError e) {
958 ++sampleSize;
959 if (sampleSize <= 3) {
960 copyImageToPrivateStorage(file, image, sampleSize);
961 } else {
962 throw new FileCopyException(R.string.error_out_of_memory);
963 }
964 } finally {
965 close(os);
966 close(is);
967 }
968 }
969
970 private static void cleanup(final File file) {
971 try {
972 file.delete();
973 } catch (Exception e) {
974
975 }
976 }
977
978 public void copyImageToPrivateStorage(File file, Uri image)
979 throws FileCopyException, ImageCompressionException {
980 Log.d(
981 Config.LOGTAG,
982 "copy image ("
983 + image.toString()
984 + ") to private storage "
985 + file.getAbsolutePath());
986 copyImageToPrivateStorage(file, image, 0);
987 }
988
989 public void copyImageToPrivateStorage(Message message, Uri image)
990 throws FileCopyException, ImageCompressionException {
991 final String filename;
992 switch (Config.IMAGE_FORMAT) {
993 case JPEG:
994 filename = String.format("%s.%s", message.getUuid(), "jpg");
995 break;
996 case PNG:
997 filename = String.format("%s.%s", message.getUuid(), "png");
998 break;
999 case WEBP:
1000 filename = String.format("%s.%s", message.getUuid(), "webp");
1001 break;
1002 default:
1003 throw new IllegalStateException("Unknown image format");
1004 }
1005 setupRelativeFilePath(message, filename);
1006 final File tmp = getFile(message);
1007 copyImageToPrivateStorage(tmp, image);
1008 final String extension = MimeUtils.extractRelevantExtension(filename);
1009 try {
1010 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
1011 } catch (final FileNotFoundException e) {
1012 throw new FileCopyException(R.string.error_file_not_found);
1013 } catch (final IOException e) {
1014 throw new FileCopyException(R.string.error_io_exception);
1015 } catch (final XmppConnectionService.BlockedMediaException e) {
1016 tmp.delete();
1017 message.setRelativeFilePath(null);
1018 message.setDeleted(true);
1019 return;
1020 }
1021 tmp.renameTo(getFile(message));
1022 updateFileParams(message, null, false);
1023 }
1024
1025 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1026 try {
1027 setupRelativeFilePath(message, openInputStream(uri), extension);
1028 } catch (final FileNotFoundException e) {
1029 throw new FileCopyException(R.string.error_file_not_found);
1030 } catch (final IOException e) {
1031 throw new FileCopyException(R.string.error_io_exception);
1032 }
1033 }
1034
1035 public Cid[] calculateCids(final Uri uri) throws IOException {
1036 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1037 }
1038
1039 public Cid[] calculateCids(final InputStream is) throws IOException {
1040 try {
1041 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1042 } catch (final NoSuchAlgorithmException e) {
1043 throw new AssertionError(e);
1044 }
1045 }
1046
1047 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1048 message.setRelativeFilePath(getStorageLocation(message, is, extension).getAbsolutePath());
1049 }
1050
1051 public void setupRelativeFilePath(final Message message, final String filename) {
1052 final String extension = MimeUtils.extractRelevantExtension(filename);
1053 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1054 setupRelativeFilePath(message, filename, mime);
1055 }
1056
1057 public File getStorageLocation(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1058 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1059 Cid[] cids = calculateCids(is);
1060 String base = cids[0].toString();
1061
1062 File file = null;
1063 while (file == null || (file.exists() && !file.canRead())) {
1064 file = getStorageLocation(message, String.format("%s.%s", base, extension), mime);
1065 base += "_";
1066 }
1067 for (int i = 0; i < cids.length; i++) {
1068 mXmppConnectionService.saveCid(cids[i], file);
1069 }
1070 return file;
1071 }
1072
1073 public File getStorageLocation(final Message message, final String filename, final String mime) {
1074 final File parentDirectory;
1075 if (Strings.isNullOrEmpty(mime)) {
1076 parentDirectory =
1077 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1078 } else if (mime.startsWith("image/")) {
1079 parentDirectory =
1080 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1081 } else if (mime.startsWith("video/")) {
1082 parentDirectory =
1083 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1084 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1085 parentDirectory =
1086 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1087 } else {
1088 parentDirectory =
1089 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1090 }
1091 final File appDirectory =
1092 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1093 if (message == null || message.getStatus() == Message.STATUS_DUMMY || (message.getConversation() instanceof Conversation && ((Conversation) message.getConversation()).storeInCache())) {
1094 final var mediaCache = new File(mXmppConnectionService.getCacheDir(), "/media");
1095 return new File(mediaCache, filename);
1096 } else {
1097 return new File(appDirectory, filename);
1098 }
1099 }
1100
1101 public static boolean inConversationsDirectory(final Context context, String path) {
1102 final File fileDirectory = new File(path).getParentFile();
1103 for (final String type : STORAGE_TYPES) {
1104 final File typeDirectory =
1105 new File(
1106 Environment.getExternalStoragePublicDirectory(type),
1107 context.getString(R.string.app_name));
1108 if (typeDirectory.equals(fileDirectory)) {
1109 return true;
1110 }
1111 }
1112 return false;
1113 }
1114
1115 public void setupRelativeFilePath(
1116 final Message message, final String filename, final String mime) {
1117 final File file = getStorageLocation(message, filename, mime);
1118 message.setRelativeFilePath(file.getAbsolutePath());
1119 }
1120
1121 public boolean unusualBounds(final Uri image) {
1122 try {
1123 final BitmapFactory.Options options = new BitmapFactory.Options();
1124 options.inJustDecodeBounds = true;
1125 final InputStream inputStream =
1126 mXmppConnectionService.getContentResolver().openInputStream(image);
1127 BitmapFactory.decodeStream(inputStream, null, options);
1128 close(inputStream);
1129 float ratio = (float) options.outHeight / options.outWidth;
1130 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1131 } catch (final Exception e) {
1132 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1133 return false;
1134 }
1135 }
1136
1137 private int getRotation(final File file) {
1138 try (final InputStream inputStream = new FileInputStream(file)) {
1139 return getRotation(inputStream);
1140 } catch (Exception e) {
1141 return 0;
1142 }
1143 }
1144
1145 private int getRotation(final Uri image) {
1146 try (final InputStream is =
1147 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1148 return is == null ? 0 : getRotation(is);
1149 } catch (final Exception e) {
1150 return 0;
1151 }
1152 }
1153
1154 private static int getRotation(final InputStream inputStream) throws IOException {
1155 final ExifInterface exif = new ExifInterface(inputStream);
1156 final int orientation =
1157 exif.getAttributeInt(
1158 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1159 switch (orientation) {
1160 case ExifInterface.ORIENTATION_ROTATE_180:
1161 return 180;
1162 case ExifInterface.ORIENTATION_ROTATE_90:
1163 return 90;
1164 case ExifInterface.ORIENTATION_ROTATE_270:
1165 return 270;
1166 default:
1167 return 0;
1168 }
1169 }
1170
1171 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1172 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1173 if (thumbs != null && !thumbs.isEmpty()) {
1174 for (final var thumb : thumbs) {
1175 final var uriS = thumb.getAttribute("uri");
1176 if (uriS == null) continue;
1177 Uri uri = Uri.parse(uriS);
1178 if (uri.getScheme().equals("data")) {
1179 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1180
1181 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1182 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1183 if (cached != null || cacheOnly) return cached;
1184
1185 byte[] data;
1186 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1187 String[] parts2 = parts[0].split(";", 2);
1188 parts[0] = parts2[0];
1189 data = Base64.decode(parts[1], 0);
1190 } else {
1191 try {
1192 data = parts[1].getBytes("UTF-8");
1193 } catch (final IOException e) {
1194 data = new byte[0];
1195 }
1196 }
1197
1198 if (parts[0].equals("image/blurhash")) {
1199 int width = message.getFileParams().width;
1200 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1201 if (width < 1) width = 1920;
1202
1203 int height = message.getFileParams().height;
1204 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1205 if (height < 1) height = 1080;
1206 Rect r = rectForSize(width, height, size);
1207
1208 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1209 if (blurhash != null) {
1210 cached = new BitmapDrawable(blurhash);
1211 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1212 return cached;
1213 }
1214 } else if (parts[0].equals("image/thumbhash")) {
1215 ThumbHash.Image image;
1216 try {
1217 image = ThumbHash.thumbHashToRGBA(data);
1218 } catch (final Exception e) {
1219 continue;
1220 }
1221 int[] pixels = new int[image.width * image.height];
1222 for (int i = 0; i < pixels.length; i++) {
1223 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);
1224 }
1225 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1226 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1227 return cached;
1228 }
1229 }
1230 }
1231 }
1232
1233 return null;
1234 }
1235
1236 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1237 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1238 DownloadableFile file = getFile(message);
1239 Drawable thumbnail = cache.get(file.getAbsolutePath());
1240 if (thumbnail != null) return thumbnail;
1241
1242 if ((thumbnail == null) && (!cacheOnly)) {
1243 synchronized (THUMBNAIL_LOCK) {
1244 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1245 if (thumbs != null && !thumbs.isEmpty()) {
1246 for (final var thumb : thumbs) {
1247 final var uriS = thumb.getAttribute("uri");
1248 if (uriS == null) continue;
1249 Uri uri = Uri.parse(uriS);
1250 if (uri.getScheme().equals("data")) {
1251 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1252 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1253
1254 byte[] data;
1255 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1256 String[] parts2 = parts[0].split(";", 2);
1257 parts[0] = parts2[0];
1258 data = Base64.decode(parts[1], 0);
1259 } else {
1260 data = parts[1].getBytes("UTF-8");
1261 }
1262
1263 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1264 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1265
1266 if (android.os.Build.VERSION.SDK_INT >= 28) {
1267 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1268 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1269 int w = info.getSize().getWidth();
1270 int h = info.getSize().getHeight();
1271 Rect r = rectForSize(w, h, size);
1272 decoder.setTargetSize(r.width(), r.height());
1273 });
1274 }
1275
1276 if (thumbnail != null && file.getAbsolutePath() != null) {
1277 cache.put(file.getAbsolutePath(), thumbnail);
1278 return thumbnail;
1279 }
1280 } else if (uri.getScheme().equals("cid")) {
1281 Cid cid = BobTransfer.cid(uri);
1282 if (cid == null) continue;
1283 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1284 if (f != null && f.canRead()) {
1285 return getThumbnail(f, res, size, cacheOnly);
1286 }
1287 }
1288 }
1289 }
1290 }
1291 }
1292
1293 return getThumbnail(file, res, size, cacheOnly);
1294 }
1295
1296 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1297 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1298 }
1299
1300 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1301 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1302 Drawable thumbnail = cache.get(cacheKey);
1303 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1304 synchronized (THUMBNAIL_LOCK) {
1305 thumbnail = cache.get(cacheKey);
1306 if (thumbnail != null) {
1307 return thumbnail;
1308 }
1309 final String mime = file.getMimeType();
1310 if ("image/svg+xml".equals(mime)) {
1311 thumbnail = getSVG(file, size);
1312 } else if ("application/pdf".equals(mime)) {
1313 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1314 } else if (mime.startsWith("video/")) {
1315 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1316 } else if (mime.startsWith("audio/")) {
1317 thumbnail = res.getDrawable(R.drawable.audio_file_24dp);
1318 } else {
1319 thumbnail = getImagePreview(file, res, size, mime);
1320 if (thumbnail == null) {
1321 throw new FileNotFoundException();
1322 }
1323 }
1324 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1325 }
1326 }
1327 return thumbnail;
1328 }
1329
1330 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1331 final Drawable drawable = getThumbnail(message, res, size, false);
1332 if (drawable == null) return null;
1333 return drawDrawable(drawable);
1334 }
1335
1336 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1337 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1338 if (drawable == null) return null;
1339 return drawDrawable(drawable);
1340 }
1341
1342 public static Rect rectForSize(int w, int h, int size) {
1343 int scalledW;
1344 int scalledH;
1345 if (w <= h) {
1346 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1347 scalledH = size;
1348 } else {
1349 scalledW = size;
1350 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1351 }
1352
1353 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1354
1355 return new Rect(0, 0, scalledW, scalledH);
1356 }
1357
1358 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1359 if (android.os.Build.VERSION.SDK_INT >= 28) {
1360 ImageDecoder.Source source = ImageDecoder.createSource(file);
1361 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1362 int w = info.getSize().getWidth();
1363 int h = info.getSize().getHeight();
1364 Rect r = rectForSize(w, h, size);
1365 decoder.setTargetSize(r.width(), r.height());
1366 });
1367 } else {
1368 BitmapFactory.Options options = new BitmapFactory.Options();
1369 options.inSampleSize = calcSampleSize(file, size);
1370 Bitmap bitmap = null;
1371 try {
1372 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1373 } catch (OutOfMemoryError e) {
1374 options.inSampleSize *= 2;
1375 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1376 }
1377 if (bitmap == null) return null;
1378
1379 bitmap = resize(bitmap, size);
1380 bitmap = rotate(bitmap, getRotation(file));
1381 if (mime.equals("image/gif")) {
1382 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1383 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1384 bitmap.recycle();
1385 bitmap = withGifOverlay;
1386 }
1387 return new BitmapDrawable(res, bitmap);
1388 }
1389 }
1390
1391 public static Bitmap drawDrawable(Drawable drawable) {
1392 if (drawable == null) return null;
1393
1394 Bitmap bitmap = null;
1395
1396 if (drawable instanceof BitmapDrawable) {
1397 bitmap = ((BitmapDrawable) drawable).getBitmap();
1398 if (bitmap != null) return bitmap;
1399 }
1400
1401 Rect bounds = drawable.getBounds();
1402 int width = drawable.getIntrinsicWidth();
1403 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1404 int height = drawable.getIntrinsicHeight();
1405 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1406
1407 if (width < 1) {
1408 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1409 width = 48;
1410 }
1411 if (height < 1) {
1412 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1413 height = 48;
1414 }
1415
1416 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1417 Canvas canvas = new Canvas(bitmap);
1418 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1419 drawable.draw(canvas);
1420 return bitmap;
1421 }
1422
1423 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1424 Bitmap overlay =
1425 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1426 Canvas canvas = new Canvas(bitmap);
1427 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1428 Log.d(
1429 Config.LOGTAG,
1430 "target size overlay: "
1431 + targetSize
1432 + " overlay bitmap size was "
1433 + overlay.getHeight());
1434 float left = (canvas.getWidth() - targetSize) / 2.0f;
1435 float top = (canvas.getHeight() - targetSize) / 2.0f;
1436 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1437 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1438 }
1439
1440 /** https://stackoverflow.com/a/3943023/210897 */
1441 private boolean paintOverlayBlack(final Bitmap bitmap) {
1442 final int h = bitmap.getHeight();
1443 final int w = bitmap.getWidth();
1444 int record = 0;
1445 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1446 for (int x = Math.round(w * IGNORE_PADDING);
1447 x < w - Math.round(w * IGNORE_PADDING);
1448 ++x) {
1449 int pixel = bitmap.getPixel(x, y);
1450 if ((Color.red(pixel) * 0.299
1451 + Color.green(pixel) * 0.587
1452 + Color.blue(pixel) * 0.114)
1453 > 186) {
1454 --record;
1455 } else {
1456 ++record;
1457 }
1458 }
1459 }
1460 return record < 0;
1461 }
1462
1463 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1464 final int h = bitmap.getHeight();
1465 final int w = bitmap.getWidth();
1466 int white = 0;
1467 for (int y = 0; y < h; ++y) {
1468 for (int x = 0; x < w; ++x) {
1469 int pixel = bitmap.getPixel(x, y);
1470 if ((Color.red(pixel) * 0.299
1471 + Color.green(pixel) * 0.587
1472 + Color.blue(pixel) * 0.114)
1473 > 186) {
1474 white++;
1475 }
1476 }
1477 }
1478 return white > (h * w * 0.4f);
1479 }
1480
1481 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1482 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1483 Bitmap frame;
1484 try {
1485 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1486 frame = metadataRetriever.getFrameAtTime(0);
1487 metadataRetriever.release();
1488 return cropCenterSquare(frame, size);
1489 } catch (Exception e) {
1490 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1491 frame.eraseColor(0xff000000);
1492 return frame;
1493 }
1494 }
1495
1496 private Bitmap getVideoPreview(final File file, final int size) {
1497 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1498 Bitmap frame;
1499 try {
1500 metadataRetriever.setDataSource(file.getAbsolutePath());
1501 frame = metadataRetriever.getFrameAtTime(0);
1502 metadataRetriever.release();
1503 frame = resize(frame, size);
1504 } catch (IOException | RuntimeException e) {
1505 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1506 frame.eraseColor(0xff000000);
1507 }
1508 drawOverlay(
1509 frame,
1510 paintOverlayBlack(frame)
1511 ? R.drawable.play_video_black
1512 : R.drawable.play_video_white,
1513 0.75f);
1514 return frame;
1515 }
1516
1517 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1518 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1519 try {
1520 final ParcelFileDescriptor fileDescriptor =
1521 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1522 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1523 drawOverlay(
1524 rendered,
1525 paintOverlayBlackPdf(rendered)
1526 ? R.drawable.open_pdf_black
1527 : R.drawable.open_pdf_white,
1528 0.75f);
1529 return rendered;
1530 } catch (final IOException | SecurityException e) {
1531 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1532 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1533 placeholder.eraseColor(0xff000000);
1534 return placeholder;
1535 }
1536 }
1537
1538 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1539 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1540 try {
1541 ParcelFileDescriptor fileDescriptor =
1542 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1543 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1544 return cropCenterSquare(bitmap, size);
1545 } catch (Exception e) {
1546 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1547 placeholder.eraseColor(0xff000000);
1548 return placeholder;
1549 }
1550 }
1551
1552 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1553 private Bitmap renderPdfDocument(
1554 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1555 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1556 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1557 final Dimensions dimensions =
1558 scalePdfDimensions(
1559 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1560 final Bitmap rendered =
1561 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1562 rendered.eraseColor(0xffffffff);
1563 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1564 page.close();
1565 pdfRenderer.close();
1566 fileDescriptor.close();
1567 return rendered;
1568 }
1569
1570 public Uri getTakePhotoUri() {
1571 final String filename =
1572 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1573 final File directory;
1574 if (Config.ONLY_INTERNAL_STORAGE) {
1575 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1576 } else {
1577 directory =
1578 new File(
1579 Environment.getExternalStoragePublicDirectory(
1580 Environment.DIRECTORY_DCIM),
1581 "Camera");
1582 }
1583 final File file = new File(directory, filename);
1584 file.getParentFile().mkdirs();
1585 return getUriForFile(mXmppConnectionService, file);
1586 }
1587
1588 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1589
1590 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1591 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1592 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1593 return uncompressAvatar.first;
1594 }
1595 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1596 Log.d(
1597 Config.LOGTAG,
1598 "uncompressed avatar exceeded char limit by "
1599 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1600 }
1601
1602 Bitmap bm = cropCenterSquare(image, size);
1603 if (bm == null) {
1604 return null;
1605 }
1606 if (hasAlpha(bm)) {
1607 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1608 bm.recycle();
1609 bm = cropCenterSquare(image, 96);
1610 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1611 }
1612 return getPepAvatar(bm, format, 100);
1613 }
1614
1615 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1616 try {
1617 if (android.os.Build.VERSION.SDK_INT >= 28) {
1618 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1619 int[] size = new int[] { 0, 0 };
1620 boolean[] animated = new boolean[] { false };
1621 String[] mimeType = new String[] { null };
1622 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1623 mimeType[0] = info.getMimeType();
1624 animated[0] = info.isAnimated();
1625 size[0] = info.getSize().getWidth();
1626 size[1] = info.getSize().getHeight();
1627 });
1628
1629 if (animated[0]) {
1630 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1631 if (avatar != null) return new Pair(avatar, true);
1632 }
1633
1634 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1635 } else {
1636 Bitmap bitmap =
1637 BitmapFactory.decodeStream(
1638 mXmppConnectionService.getContentResolver().openInputStream(uri));
1639 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1640 }
1641 } catch (Exception e) {
1642 try {
1643 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1644 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1645 } catch (Exception e2) {
1646 return null;
1647 }
1648 }
1649 }
1650
1651 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1652 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1653 if (fd.getLength() > 100000) return null; // Too big to use raw file
1654
1655 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1656 Base64OutputStream mBase64OutputStream =
1657 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1658 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1659 DigestOutputStream mDigestOutputStream =
1660 new DigestOutputStream(mBase64OutputStream, digest);
1661
1662 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1663 mDigestOutputStream.flush();
1664 mDigestOutputStream.close();
1665
1666 final Avatar avatar = new Avatar();
1667 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1668 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1669 avatar.type = mimeType;
1670 avatar.width = width;
1671 avatar.height = height;
1672 return avatar;
1673 }
1674
1675 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1676 try {
1677 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1678 Base64OutputStream mBase64OutputStream =
1679 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1680 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1681 DigestOutputStream mDigestOutputStream =
1682 new DigestOutputStream(mBase64OutputStream, digest);
1683 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1684 return null;
1685 }
1686 mDigestOutputStream.flush();
1687 mDigestOutputStream.close();
1688 long chars = mByteArrayOutputStream.size();
1689 if (format != Bitmap.CompressFormat.PNG
1690 && quality >= 50
1691 && chars >= Config.AVATAR_CHAR_LIMIT) {
1692 int q = quality - 2;
1693 Log.d(
1694 Config.LOGTAG,
1695 "avatar char length was " + chars + " reducing quality to " + q);
1696 return getPepAvatar(bitmap, format, q);
1697 }
1698 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1699 final Avatar avatar = new Avatar();
1700 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1701 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1702 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1703 avatar.type = "image/webp";
1704 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1705 avatar.type = "image/jpeg";
1706 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1707 avatar.type = "image/png";
1708 }
1709 avatar.width = bitmap.getWidth();
1710 avatar.height = bitmap.getHeight();
1711 return avatar;
1712 } catch (OutOfMemoryError e) {
1713 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1714 return null;
1715 } catch (Exception e) {
1716 return null;
1717 }
1718 }
1719
1720 public Avatar getStoredPepAvatar(String hash) {
1721 if (hash == null) {
1722 return null;
1723 }
1724 Avatar avatar = new Avatar();
1725 final File file = getAvatarFile(hash);
1726 FileInputStream is = null;
1727 try {
1728 avatar.size = file.length();
1729 BitmapFactory.Options options = new BitmapFactory.Options();
1730 options.inJustDecodeBounds = true;
1731 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1732 is = new FileInputStream(file);
1733 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1734 Base64OutputStream mBase64OutputStream =
1735 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1736 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1737 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1738 byte[] buffer = new byte[4096];
1739 int length;
1740 while ((length = is.read(buffer)) > 0) {
1741 os.write(buffer, 0, length);
1742 }
1743 os.flush();
1744 os.close();
1745 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1746 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1747 avatar.height = options.outHeight;
1748 avatar.width = options.outWidth;
1749 avatar.type = options.outMimeType;
1750 return avatar;
1751 } catch (NoSuchAlgorithmException | IOException e) {
1752 return null;
1753 } finally {
1754 close(is);
1755 }
1756 }
1757
1758 public boolean isAvatarCached(Avatar avatar) {
1759 final File file = getAvatarFile(avatar.getFilename());
1760 return file.exists();
1761 }
1762
1763 public boolean save(final Avatar avatar) {
1764 File file;
1765 if (isAvatarCached(avatar)) {
1766 file = getAvatarFile(avatar.getFilename());
1767 avatar.size = file.length();
1768 } else {
1769 file =
1770 new File(
1771 mXmppConnectionService.getCacheDir().getAbsolutePath()
1772 + "/"
1773 + UUID.randomUUID().toString());
1774 if (file.getParentFile().mkdirs()) {
1775 Log.d(Config.LOGTAG, "created cache directory");
1776 }
1777 OutputStream os = null;
1778 try {
1779 if (!file.createNewFile()) {
1780 Log.d(
1781 Config.LOGTAG,
1782 "unable to create temporary file " + file.getAbsolutePath());
1783 }
1784 os = new FileOutputStream(file);
1785 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1786 digest.reset();
1787 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1788 final byte[] bytes = avatar.getImageAsBytes();
1789 mDigestOutputStream.write(bytes);
1790 mDigestOutputStream.flush();
1791 mDigestOutputStream.close();
1792 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1793 if (sha1sum.equals(avatar.sha1sum)) {
1794 final File outputFile = getAvatarFile(avatar.getFilename());
1795 if (outputFile.getParentFile().mkdirs()) {
1796 Log.d(Config.LOGTAG, "created avatar directory");
1797 }
1798 final File avatarFile = getAvatarFile(avatar.getFilename());
1799 if (!file.renameTo(avatarFile)) {
1800 Log.d(
1801 Config.LOGTAG,
1802 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1803 return false;
1804 }
1805 } else {
1806 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1807 if (!file.delete()) {
1808 Log.d(Config.LOGTAG, "unable to delete temporary file");
1809 }
1810 return false;
1811 }
1812 avatar.size = bytes.length;
1813 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1814 return false;
1815 } finally {
1816 close(os);
1817 }
1818 }
1819 return true;
1820 }
1821
1822 public void deleteHistoricAvatarPath() {
1823 delete(getHistoricAvatarPath());
1824 }
1825
1826 private void delete(final File file) {
1827 if (file.isDirectory()) {
1828 final File[] files = file.listFiles();
1829 if (files != null) {
1830 for (final File f : files) {
1831 delete(f);
1832 }
1833 }
1834 }
1835 if (file.delete()) {
1836 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1837 }
1838 }
1839
1840 private File getHistoricAvatarPath() {
1841 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1842 }
1843
1844 public File getAvatarFile(String avatar) {
1845 final var f = new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1846 if (Build.VERSION.SDK_INT < 26) return f; // Doesn't support file.toPath
1847 try {
1848 if (f.exists()) java.nio.file.Files.setAttribute(f.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
1849 } catch (final IOException e) {
1850 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + f);
1851 }
1852 return f;
1853 }
1854
1855 public Uri getAvatarUri(String avatar) {
1856 return Uri.fromFile(getAvatarFile(avatar));
1857 }
1858
1859 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1860 if (android.os.Build.VERSION.SDK_INT >= 28) {
1861 try {
1862 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1863 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1864 int w = info.getSize().getWidth();
1865 int h = info.getSize().getHeight();
1866 Rect r = rectForSize(w, h, size);
1867 decoder.setTargetSize(r.width(), r.height());
1868
1869 int newSize = Math.min(r.width(), r.height());
1870 int left = (r.width() - newSize) / 2;
1871 int top = (r.height() - newSize) / 2;
1872 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1873 });
1874 } catch (final IOException e) {
1875 return getSVGSquare(image, size);
1876 }
1877 } else {
1878 Bitmap bitmap = cropCenterSquare(image, size);
1879 return bitmap == null ? null : new BitmapDrawable(bitmap);
1880 }
1881 }
1882
1883 public Bitmap cropCenterSquare(Uri image, int size) {
1884 if (image == null) {
1885 return null;
1886 }
1887 InputStream is = null;
1888 try {
1889 BitmapFactory.Options options = new BitmapFactory.Options();
1890 options.inSampleSize = calcSampleSize(image, size);
1891 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1892 if (is == null) {
1893 return null;
1894 }
1895 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1896 if (input == null) {
1897 return null;
1898 } else {
1899 input = rotate(input, getRotation(image));
1900 return cropCenterSquare(input, size);
1901 }
1902 } catch (FileNotFoundException | SecurityException e) {
1903 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1904 return null;
1905 } finally {
1906 close(is);
1907 }
1908 }
1909
1910 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1911 if (image == null) {
1912 return null;
1913 }
1914 InputStream is = null;
1915 try {
1916 BitmapFactory.Options options = new BitmapFactory.Options();
1917 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1918 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1919 if (is == null) {
1920 return null;
1921 }
1922 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1923 if (source == null) {
1924 return null;
1925 }
1926 int sourceWidth = source.getWidth();
1927 int sourceHeight = source.getHeight();
1928 float xScale = (float) newWidth / sourceWidth;
1929 float yScale = (float) newHeight / sourceHeight;
1930 float scale = Math.max(xScale, yScale);
1931 float scaledWidth = scale * sourceWidth;
1932 float scaledHeight = scale * sourceHeight;
1933 float left = (newWidth - scaledWidth) / 2;
1934 float top = (newHeight - scaledHeight) / 2;
1935
1936 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1937 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1938 Canvas canvas = new Canvas(dest);
1939 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1940 if (source.isRecycled()) {
1941 source.recycle();
1942 }
1943 return dest;
1944 } catch (SecurityException e) {
1945 return null; // android 6.0 with revoked permissions for example
1946 } catch (FileNotFoundException e) {
1947 return null;
1948 } finally {
1949 close(is);
1950 }
1951 }
1952
1953 public Bitmap cropCenterSquare(Bitmap input, int size) {
1954 int w = input.getWidth();
1955 int h = input.getHeight();
1956
1957 float scale = Math.max((float) size / h, (float) size / w);
1958
1959 float outWidth = scale * w;
1960 float outHeight = scale * h;
1961 float left = (size - outWidth) / 2;
1962 float top = (size - outHeight) / 2;
1963 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1964
1965 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1966 Canvas canvas = new Canvas(output);
1967 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1968 if (!input.isRecycled()) {
1969 input.recycle();
1970 }
1971 return output;
1972 }
1973
1974 private int calcSampleSize(Uri image, int size)
1975 throws FileNotFoundException, SecurityException {
1976 final BitmapFactory.Options options = new BitmapFactory.Options();
1977 options.inJustDecodeBounds = true;
1978 final InputStream inputStream =
1979 mXmppConnectionService.getContentResolver().openInputStream(image);
1980 BitmapFactory.decodeStream(inputStream, null, options);
1981 close(inputStream);
1982 return calcSampleSize(options, size);
1983 }
1984
1985 public void updateFileParams(Message message) {
1986 updateFileParams(message, null);
1987 }
1988
1989 public void updateFileParams(final Message message, final String url) {
1990 updateFileParams(message, url, true);
1991 }
1992
1993 public void updateFileParams(final Message message, String url, boolean updateCids) {
1994 final boolean encrypted =
1995 message.getEncryption() == Message.ENCRYPTION_PGP
1996 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1997 final DownloadableFile file = getFile(message);
1998 final String mime = file.getMimeType();
1999 final boolean privateMessage = message.isPrivateMessage();
2000 final boolean image =
2001 message.getType() == Message.TYPE_IMAGE
2002 || (mime != null && mime.startsWith("image/"));
2003 Message.FileParams fileParams = message.getFileParams();
2004 if (fileParams == null) fileParams = new Message.FileParams();
2005 Cid[] cids = new Cid[0];
2006 try {
2007 cids = calculateCids(new FileInputStream(file));
2008 fileParams.setCids(List.of(cids));
2009 } catch (final IOException | NoSuchAlgorithmException e) { }
2010 if (url == null) {
2011 for (Cid cid : cids) {
2012 url = mXmppConnectionService.getUrlForCid(cid);
2013 if (url != null) {
2014 fileParams.url = url;
2015 break;
2016 }
2017 }
2018 } else {
2019 fileParams.url = url;
2020 }
2021 if (fileParams.getName() == null) fileParams.setName(file.getName());
2022 fileParams.setMediaType(mime);
2023 if (encrypted && !file.exists()) {
2024 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
2025 final DownloadableFile encryptedFile = getFile(message, false);
2026 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
2027 } else {
2028 Log.d(Config.LOGTAG, "running updateFileParams");
2029 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
2030 final boolean video = mime != null && mime.startsWith("video/");
2031 final boolean audio = mime != null && mime.startsWith("audio/");
2032 final boolean pdf = "application/pdf".equals(mime);
2033 if (file.canRead()) fileParams.size = file.getSize();
2034 if (ambiguous) {
2035 try {
2036 final Dimensions dimensions = getVideoDimensions(file);
2037 if (dimensions.valid()) {
2038 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
2039 fileParams.width = dimensions.width;
2040 fileParams.height = dimensions.height;
2041 } else {
2042 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2043 fileParams.runtime = getMediaRuntime(file);
2044 }
2045 } catch (final IOException | NotAVideoFile e) {
2046 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2047 fileParams.runtime = getMediaRuntime(file);
2048 }
2049 } else if (image || video || pdf) {
2050 try {
2051 final Dimensions dimensions;
2052 if (video) {
2053 dimensions = getVideoDimensions(file);
2054 } else if (pdf) {
2055 dimensions = getPdfDocumentDimensions(file);
2056 } else if ("image/svg+xml".equals(mime)) {
2057 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2058 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2059 } else {
2060 dimensions = getImageDimensions(file);
2061 }
2062 if (dimensions.valid()) {
2063 fileParams.width = dimensions.width;
2064 fileParams.height = dimensions.height;
2065 }
2066 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2067 Log.d(
2068 Config.LOGTAG,
2069 "file with mime type " + file.getMimeType() + " was not a video file");
2070 // fall threw
2071 }
2072 } else if (audio) {
2073 fileParams.runtime = getMediaRuntime(file);
2074 }
2075 if ("application/webxdc+zip".equals(mime)) {
2076 try {
2077 final var zip = new ZipFile(file);
2078 final ZipEntry manifestEntry = zip == null ? null : zip.getEntry("manifest.toml");
2079 if (manifestEntry != null) {
2080 final var manifest = Toml.parse(zip.getInputStream(manifestEntry));
2081 if (manifest != null) {
2082 final var name = manifest.getString("name");
2083 if (name != null) fileParams.setName(name);
2084 }
2085 }
2086 } catch (final IOException e2) { }
2087 }
2088 try {
2089 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2090 if (thumb != null) {
2091 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2092 byte[] rgba = new byte[pixels.length * 4];
2093 try {
2094 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2095 } catch (final IllegalStateException e) {
2096 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2097 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2098 softThumb.recycle();
2099 }
2100 for (int i = 0; i < pixels.length; i++) {
2101 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2102 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2103 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2104 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2105 }
2106 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2107 }
2108 } catch (final IOException e) { }
2109 }
2110 message.setFileParams(fileParams);
2111 message.setDeleted(false);
2112 message.setType(
2113 privateMessage
2114 ? Message.TYPE_PRIVATE_FILE
2115 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2116
2117 if (updateCids) {
2118 try {
2119 for (int i = 0; i < cids.length; i++) {
2120 mXmppConnectionService.saveCid(cids[i], file);
2121 }
2122 } catch (XmppConnectionService.BlockedMediaException e) { }
2123 }
2124 }
2125
2126 private int getMediaRuntime(final File file) {
2127 try {
2128 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2129 mediaMetadataRetriever.setDataSource(file.toString());
2130 final String value =
2131 mediaMetadataRetriever.extractMetadata(
2132 MediaMetadataRetriever.METADATA_KEY_DURATION);
2133 if (Strings.isNullOrEmpty(value)) {
2134 return 0;
2135 }
2136 return Integer.parseInt(value);
2137 } catch (final Exception e) {
2138 return 0;
2139 }
2140 }
2141
2142 private Dimensions getImageDimensions(File file) {
2143 final BitmapFactory.Options options = new BitmapFactory.Options();
2144 options.inJustDecodeBounds = true;
2145 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2146 final int rotation = getRotation(file);
2147 final boolean rotated = rotation == 90 || rotation == 270;
2148 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2149 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2150 return new Dimensions(imageHeight, imageWidth);
2151 }
2152
2153 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2154 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2155 try {
2156 metadataRetriever.setDataSource(file.getAbsolutePath());
2157 } catch (RuntimeException e) {
2158 throw new NotAVideoFile(e);
2159 }
2160 return getVideoDimensions(metadataRetriever);
2161 }
2162
2163 private Dimensions getPdfDocumentDimensions(final File file) {
2164 final ParcelFileDescriptor fileDescriptor;
2165 try {
2166 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2167 if (fileDescriptor == null) {
2168 return new Dimensions(0, 0);
2169 }
2170 } catch (final FileNotFoundException e) {
2171 return new Dimensions(0, 0);
2172 }
2173 try {
2174 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2175 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2176 final int height = page.getHeight();
2177 final int width = page.getWidth();
2178 page.close();
2179 pdfRenderer.close();
2180 return scalePdfDimensions(new Dimensions(height, width));
2181 } catch (final IOException | SecurityException e) {
2182 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2183 return new Dimensions(0, 0);
2184 }
2185 }
2186
2187 private Dimensions scalePdfDimensions(Dimensions in) {
2188 final DisplayMetrics displayMetrics =
2189 mXmppConnectionService.getResources().getDisplayMetrics();
2190 final int target = (int) (displayMetrics.density * 288);
2191 return scalePdfDimensions(in, target, true);
2192 }
2193
2194 private static Dimensions scalePdfDimensions(
2195 final Dimensions in, final int target, final boolean fit) {
2196 final int w, h;
2197 if (fit == (in.width <= in.height)) {
2198 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2199 h = target;
2200 } else {
2201 w = target;
2202 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2203 }
2204 return new Dimensions(h, w);
2205 }
2206
2207 public Drawable getAvatar(String avatar, int size) {
2208 if (avatar == null) {
2209 return null;
2210 }
2211
2212 if (android.os.Build.VERSION.SDK_INT >= 28) {
2213 try {
2214 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2215 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2216 int w = info.getSize().getWidth();
2217 int h = info.getSize().getHeight();
2218 Rect r = rectForSize(w, h, size);
2219 decoder.setTargetSize(r.width(), r.height());
2220
2221 int newSize = Math.min(r.width(), r.height());
2222 int left = (r.width() - newSize) / 2;
2223 int top = (r.height() - newSize) / 2;
2224 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2225 });
2226 } catch (final IOException e) {
2227 return getSVGSquare(getAvatarUri(avatar), size);
2228 }
2229 } else {
2230 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2231 return bm == null ? null : new BitmapDrawable(bm);
2232 }
2233 }
2234
2235 public Drawable getSVGSquare(Uri uri, int size) {
2236 try {
2237 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2238 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2239
2240 float w = svg.getDocumentWidth();
2241 float h = svg.getDocumentHeight();
2242 float scale = Math.max((float) size / h, (float) size / w);
2243 float outWidth = scale * w;
2244 float outHeight = scale * h;
2245 float left = (size - outWidth) / 2;
2246 float top = (size - outHeight) / 2;
2247 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2248 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2249 svg.setDocumentWidth("100%");
2250 svg.setDocumentHeight("100%");
2251
2252 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2253 Canvas canvas = new Canvas(output);
2254 svg.renderToCanvas(canvas, target);
2255
2256 return new SVGDrawable(output);
2257 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2258 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2259 return null;
2260 }
2261 }
2262
2263 public Drawable getSVG(File file, int size) {
2264 try {
2265 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2266 return drawSVG(svg, size);
2267 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2268 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2269 return null;
2270 }
2271 }
2272
2273 public Drawable drawSVG(SVG svg, int size) {
2274 try {
2275 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2276
2277 float w = svg.getDocumentWidth();
2278 float h = svg.getDocumentHeight();
2279 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2280 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2281 svg.setDocumentWidth("100%");
2282 svg.setDocumentHeight("100%");
2283
2284 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2285 Canvas canvas = new Canvas(output);
2286 svg.renderToCanvas(canvas);
2287
2288 return new SVGDrawable(output);
2289 } catch (final SVGParseException e) {
2290 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2291 return null;
2292 }
2293 }
2294
2295 private static class Dimensions {
2296 public final int width;
2297 public final int height;
2298
2299 Dimensions(int height, int width) {
2300 this.width = width;
2301 this.height = height;
2302 }
2303
2304 public int getMin() {
2305 return Math.min(width, height);
2306 }
2307
2308 public boolean valid() {
2309 return width > 0 && height > 0;
2310 }
2311 }
2312
2313 private static class NotAVideoFile extends Exception {
2314 public NotAVideoFile(Throwable t) {
2315 super(t);
2316 }
2317
2318 public NotAVideoFile() {
2319 super();
2320 }
2321 }
2322
2323 public static class ImageCompressionException extends Exception {
2324
2325 ImageCompressionException(String message) {
2326 super(message);
2327 }
2328 }
2329
2330 public static class FileCopyException extends Exception {
2331 private final int resId;
2332
2333 private FileCopyException(@StringRes int resId) {
2334 this.resId = resId;
2335 }
2336
2337 public @StringRes int getResId() {
2338 return resId;
2339 }
2340 }
2341
2342 public static class SVGDrawable extends BitmapDrawable {
2343 public SVGDrawable(Bitmap bm) { super(bm); }
2344 }
2345}