1package eu.siacs.conversations.persistance;
2
3import android.content.ContentResolver;
4import android.content.Context;
5import android.content.res.AssetFileDescriptor;
6import android.content.res.Resources;
7import android.database.Cursor;
8import android.graphics.Bitmap;
9import android.graphics.BitmapFactory;
10import android.graphics.Canvas;
11import android.graphics.Color;
12import android.graphics.drawable.BitmapDrawable;
13import android.graphics.drawable.Drawable;
14import android.graphics.ImageDecoder;
15import android.graphics.Matrix;
16import android.graphics.Paint;
17import android.graphics.Rect;
18import android.graphics.RectF;
19import android.graphics.pdf.PdfRenderer;
20import android.media.MediaMetadataRetriever;
21import android.media.MediaScannerConnection;
22import android.net.Uri;
23import android.os.Build;
24import android.os.Environment;
25import android.os.ParcelFileDescriptor;
26import android.provider.MediaStore;
27import android.provider.OpenableColumns;
28import android.system.Os;
29import android.system.StructStat;
30import android.util.Base64;
31import android.util.Base64OutputStream;
32import android.util.DisplayMetrics;
33import android.util.Pair;
34import android.util.Log;
35import android.util.LruCache;
36
37import androidx.annotation.RequiresApi;
38import androidx.annotation.StringRes;
39import androidx.core.content.FileProvider;
40import androidx.documentfile.provider.DocumentFile;
41import androidx.exifinterface.media.ExifInterface;
42
43import com.caverock.androidsvg.SVG;
44import com.caverock.androidsvg.SVGParseException;
45
46import com.cheogram.android.BobTransfer;
47
48import com.google.common.base.Strings;
49import com.google.common.collect.ImmutableList;
50import com.google.common.io.ByteStreams;
51
52import com.madebyevan.thumbhash.ThumbHash;
53
54import com.wolt.blurhashkt.BlurHashDecoder;
55
56import java.io.ByteArrayInputStream;
57import java.io.ByteArrayOutputStream;
58import java.io.Closeable;
59import java.io.File;
60import java.io.FileDescriptor;
61import java.io.FileInputStream;
62import java.io.FileNotFoundException;
63import java.io.FileOutputStream;
64import java.io.IOException;
65import java.io.InputStream;
66import java.io.OutputStream;
67import java.net.ServerSocket;
68import java.net.Socket;
69import java.nio.ByteBuffer;
70import java.security.DigestOutputStream;
71import java.security.MessageDigest;
72import java.security.NoSuchAlgorithmException;
73import java.text.SimpleDateFormat;
74import java.util.ArrayList;
75import java.util.Arrays;
76import java.util.Date;
77import java.util.List;
78import java.util.Locale;
79import java.util.UUID;
80import java.util.zip.ZipEntry;
81import java.util.zip.ZipFile;
82
83import org.tomlj.Toml;
84import org.tomlj.TomlTable;
85
86import io.ipfs.cid.Cid;
87
88import eu.siacs.conversations.Config;
89import eu.siacs.conversations.R;
90import eu.siacs.conversations.entities.Conversation;
91import eu.siacs.conversations.entities.DownloadableFile;
92import eu.siacs.conversations.entities.Message;
93import eu.siacs.conversations.services.AttachFileToConversationRunnable;
94import eu.siacs.conversations.services.XmppConnectionService;
95import eu.siacs.conversations.ui.adapter.MediaAdapter;
96import eu.siacs.conversations.ui.util.Attachment;
97import eu.siacs.conversations.utils.CryptoHelper;
98import eu.siacs.conversations.utils.FileUtils;
99import eu.siacs.conversations.utils.FileWriterException;
100import eu.siacs.conversations.utils.MimeUtils;
101import eu.siacs.conversations.xmpp.pep.Avatar;
102import eu.siacs.conversations.xml.Element;
103
104public class FileBackend {
105
106 private static final Object THUMBNAIL_LOCK = new Object();
107
108 private static final SimpleDateFormat IMAGE_DATE_FORMAT =
109 new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
110
111 private static final String FILE_PROVIDER = ".files";
112 private static final float IGNORE_PADDING = 0.15f;
113 private final XmppConnectionService mXmppConnectionService;
114
115 private static final List<String> STORAGE_TYPES;
116
117 static {
118 final ImmutableList.Builder<String> builder =
119 new ImmutableList.Builder<String>()
120 .add(
121 Environment.DIRECTORY_DOWNLOADS,
122 Environment.DIRECTORY_PICTURES,
123 Environment.DIRECTORY_MOVIES);
124 if (Build.VERSION.SDK_INT >= 19) {
125 builder.add(Environment.DIRECTORY_DOCUMENTS);
126 }
127 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
128 builder.add(Environment.DIRECTORY_RECORDINGS);
129 }
130 STORAGE_TYPES = builder.build();
131 }
132
133 public FileBackend(XmppConnectionService service) {
134 this.mXmppConnectionService = service;
135 }
136
137 public static long getFileSize(Context context, Uri uri) {
138 try (final Cursor cursor =
139 context.getContentResolver().query(uri, null, null, null, null)) {
140 if (cursor != null && cursor.moveToFirst()) {
141 final int index = cursor.getColumnIndex(OpenableColumns.SIZE);
142 if (index == -1) {
143 return -1;
144 }
145 return cursor.getLong(index);
146 }
147 return -1;
148 } catch (final Exception ignored) {
149 return -1;
150 }
151 }
152
153 public static boolean allFilesUnderSize(
154 Context context, List<Attachment> attachments, long max) {
155 final boolean compressVideo =
156 !AttachFileToConversationRunnable.getVideoCompression(context)
157 .equals("uncompressed");
158 if (max <= 0) {
159 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
160 return true; // exception to be compatible with HTTP Upload < v0.2
161 }
162 for (Attachment attachment : attachments) {
163 if (attachment.getType() != Attachment.Type.FILE) {
164 continue;
165 }
166 String mime = attachment.getMime();
167 if (mime != null && mime.startsWith("video/") && compressVideo) {
168 try {
169 Dimensions dimensions =
170 FileBackend.getVideoDimensions(context, attachment.getUri());
171 if (dimensions.getMin() > 720) {
172 Log.d(
173 Config.LOGTAG,
174 "do not consider video file with min width larger than 720 for size check");
175 continue;
176 }
177 } catch (final IOException | NotAVideoFile e) {
178 // ignore and fall through
179 }
180 }
181 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
182 Log.d(
183 Config.LOGTAG,
184 "not all files are under "
185 + max
186 + " bytes. suggesting falling back to jingle");
187 return false;
188 }
189 }
190 return true;
191 }
192
193 public static File getBackupDirectory(final Context context) {
194 final File conversationsDownloadDirectory =
195 new File(
196 Environment.getExternalStoragePublicDirectory(
197 Environment.DIRECTORY_DOWNLOADS),
198 context.getString(R.string.app_name));
199 return new File(conversationsDownloadDirectory, "Backup");
200 }
201
202 public static File getLegacyBackupDirectory(final String app) {
203 final File appDirectory = new File(Environment.getExternalStorageDirectory(), app);
204 return new File(appDirectory, "Backup");
205 }
206
207 private static Bitmap rotate(final Bitmap bitmap, final int degree) {
208 if (degree == 0) {
209 return bitmap;
210 }
211 final int w = bitmap.getWidth();
212 final int h = bitmap.getHeight();
213 final Matrix matrix = new Matrix();
214 matrix.postRotate(degree);
215 final Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
216 if (!bitmap.isRecycled()) {
217 bitmap.recycle();
218 }
219 return result;
220 }
221
222 public static boolean isPathBlacklisted(String path) {
223 final String androidDataPath =
224 Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
225 final File f = new File(path);
226 return path.startsWith(androidDataPath) || !f.canRead();
227 }
228
229 private static Paint createAntiAliasingPaint() {
230 Paint paint = new Paint();
231 paint.setAntiAlias(true);
232 paint.setFilterBitmap(true);
233 paint.setDither(true);
234 return paint;
235 }
236
237 public static Uri getUriForUri(Context context, Uri uri) {
238 if ("file".equals(uri.getScheme())) {
239 return getUriForFile(context, new File(uri.getPath()));
240 } else {
241 return uri;
242 }
243 }
244
245 public static Uri getUriForFile(Context context, File file) {
246 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE || file.toString().startsWith(context.getCacheDir().toString())) {
247 try {
248 return FileProvider.getUriForFile(context, getAuthority(context), file);
249 } catch (IllegalArgumentException e) {
250 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
251 throw new SecurityException(e);
252 } else {
253 return Uri.fromFile(file);
254 }
255 }
256 } else {
257 return Uri.fromFile(file);
258 }
259 }
260
261 public static String getAuthority(Context context) {
262 return context.getPackageName() + FILE_PROVIDER;
263 }
264
265 private static boolean hasAlpha(final Bitmap bitmap) {
266 final int w = bitmap.getWidth();
267 final int h = bitmap.getHeight();
268 final int yStep = Math.max(1, w / 100);
269 final int xStep = Math.max(1, h / 100);
270 for (int x = 0; x < w; x += xStep) {
271 for (int y = 0; y < h; y += yStep) {
272 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
273 return true;
274 }
275 }
276 }
277 return false;
278 }
279
280 private static int calcSampleSize(File image, int size) {
281 BitmapFactory.Options options = new BitmapFactory.Options();
282 options.inJustDecodeBounds = true;
283 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
284 return calcSampleSize(options, size);
285 }
286
287 private static int calcSampleSize(BitmapFactory.Options options, int size) {
288 int height = options.outHeight;
289 int width = options.outWidth;
290 int inSampleSize = 1;
291
292 if (height > size || width > size) {
293 int halfHeight = height / 2;
294 int halfWidth = width / 2;
295
296 while ((halfHeight / inSampleSize) > size && (halfWidth / inSampleSize) > size) {
297 inSampleSize *= 2;
298 }
299 }
300 return inSampleSize;
301 }
302
303 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile, IOException {
304 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
305 try {
306 mediaMetadataRetriever.setDataSource(context, uri);
307 } catch (RuntimeException e) {
308 throw new NotAVideoFile(e);
309 }
310 return getVideoDimensions(mediaMetadataRetriever);
311 }
312
313 private static Dimensions getVideoDimensionsOfFrame(
314 MediaMetadataRetriever mediaMetadataRetriever) {
315 Bitmap bitmap = null;
316 try {
317 bitmap = mediaMetadataRetriever.getFrameAtTime();
318 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
319 } catch (Exception e) {
320 return null;
321 } finally {
322 if (bitmap != null) {
323 bitmap.recycle();
324 }
325 }
326 }
327
328 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever)
329 throws NotAVideoFile, IOException {
330 String hasVideo =
331 metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
332 if (hasVideo == null) {
333 throw new NotAVideoFile();
334 }
335 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
336 if (dimensions != null) {
337 return dimensions;
338 }
339 final int rotation = extractRotationFromMediaRetriever(metadataRetriever);
340 boolean rotated = rotation == 90 || rotation == 270;
341 int height;
342 try {
343 String h =
344 metadataRetriever.extractMetadata(
345 MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
346 height = Integer.parseInt(h);
347 } catch (Exception e) {
348 height = -1;
349 }
350 int width;
351 try {
352 String w =
353 metadataRetriever.extractMetadata(
354 MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
355 width = Integer.parseInt(w);
356 } catch (Exception e) {
357 width = -1;
358 }
359 try {
360 metadataRetriever.release();
361 } catch (final IOException e) {
362 throw new NotAVideoFile();
363 }
364 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
365 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
366 }
367
368 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
369 String r =
370 metadataRetriever.extractMetadata(
371 MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
372 try {
373 return Integer.parseInt(r);
374 } catch (Exception e) {
375 return 0;
376 }
377 }
378
379 public static void close(final Closeable stream) {
380 if (stream != null) {
381 try {
382 stream.close();
383 } catch (Exception e) {
384 Log.d(Config.LOGTAG, "unable to close stream", e);
385 }
386 }
387 }
388
389 public static void close(final Socket socket) {
390 if (socket != null) {
391 try {
392 socket.close();
393 } catch (IOException e) {
394 Log.d(Config.LOGTAG, "unable to close socket", e);
395 }
396 }
397 }
398
399 public static void close(final ServerSocket socket) {
400 if (socket != null) {
401 try {
402 socket.close();
403 } catch (IOException e) {
404 Log.d(Config.LOGTAG, "unable to close server socket", e);
405 }
406 }
407 }
408
409 public static boolean dangerousFile(final Uri uri) {
410 if (uri == null || Strings.isNullOrEmpty(uri.getScheme())) {
411 return true;
412 }
413 if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
414 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
415 // On Android 7 (and apps that target 7) it is now longer possible to share files
416 // with a file scheme. By now you should probably not be running apps that target
417 // anything less than 7 any more
418 return true;
419 } else {
420 return isFileOwnedByProcess(uri);
421 }
422 }
423 return false;
424 }
425
426 private static boolean isFileOwnedByProcess(final Uri uri) {
427 final String path = uri.getPath();
428 if (path == null) {
429 return true;
430 }
431 try (final var pfd =
432 ParcelFileDescriptor.open(new File(path), ParcelFileDescriptor.MODE_READ_ONLY)) {
433 final FileDescriptor fd = pfd.getFileDescriptor();
434 final StructStat st = Os.fstat(fd);
435 return st.st_uid == android.os.Process.myUid();
436 } catch (final Exception e) {
437 // when in doubt. better safe than sorry
438 return true;
439 }
440 }
441
442 public static Uri getMediaUri(Context context, File file) {
443 final String filePath = file.getAbsolutePath();
444 try (final Cursor cursor =
445 context.getContentResolver()
446 .query(
447 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
448 new String[] {MediaStore.Images.Media._ID},
449 MediaStore.Images.Media.DATA + "=? ",
450 new String[] {filePath},
451 null)) {
452 if (cursor != null && cursor.moveToFirst()) {
453 final int id =
454 cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns._ID));
455 return Uri.withAppendedPath(
456 MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
457 } else {
458 return null;
459 }
460 } catch (final Exception e) {
461 return null;
462 }
463 }
464
465 public static void updateFileParams(Message message, String url, long size) {
466 Message.FileParams fileParams = new Message.FileParams();
467 fileParams.url = url;
468 fileParams.size = size;
469 message.setFileParams(fileParams);
470 }
471
472 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
473 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
474 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
475 Drawable drawable = cache.get(key);
476 if (drawable != null || cacheOnly) {
477 return drawDrawable(drawable);
478 }
479 Bitmap bitmap = null;
480 final String mime = attachment.getMime();
481 if ("application/pdf".equals(mime)) {
482 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
483 drawOverlay(
484 bitmap,
485 paintOverlayBlackPdf(bitmap)
486 ? R.drawable.open_pdf_black
487 : R.drawable.open_pdf_white,
488 0.75f);
489 } else if (mime != null && mime.startsWith("video/")) {
490 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
491 drawOverlay(
492 bitmap,
493 paintOverlayBlack(bitmap)
494 ? R.drawable.play_video_black
495 : R.drawable.play_video_white,
496 0.75f);
497 } else {
498 bitmap = cropCenterSquare(attachment.getUri(), size);
499 if (bitmap != null && "image/gif".equals(mime)) {
500 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
501 drawOverlay(
502 withGifOverlay,
503 paintOverlayBlack(withGifOverlay)
504 ? R.drawable.play_gif_black
505 : R.drawable.play_gif_white,
506 1.0f);
507 bitmap.recycle();
508 bitmap = withGifOverlay;
509 }
510 }
511 if (key != null && bitmap != null) {
512 cache.put(key, new BitmapDrawable(bitmap));
513 }
514 return bitmap;
515 }
516
517 public void updateMediaScanner(File file) {
518 updateMediaScanner(file, null);
519 }
520
521 public void updateMediaScanner(File file, final Runnable callback) {
522 MediaScannerConnection.scanFile(
523 mXmppConnectionService,
524 new String[] {file.getAbsolutePath()},
525 null,
526 new MediaScannerConnection.MediaScannerConnectionClient() {
527 @Override
528 public void onMediaScannerConnected() {}
529
530 @Override
531 public void onScanCompleted(String path, Uri uri) {
532 if (callback != null && file.getAbsolutePath().equals(path)) {
533 callback.run();
534 } else {
535 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
536 if (callback != null) {
537 callback.run();
538 }
539 }
540 }
541 });
542 }
543
544 public boolean deleteFile(Message message) {
545 File file = getFile(message);
546 if (file.delete()) {
547 message.setDeleted(true);
548 updateMediaScanner(file);
549 return true;
550 } else {
551 return false;
552 }
553 }
554
555 public DownloadableFile getFile(Message message) {
556 return getFile(message, true);
557 }
558
559 public DownloadableFile getFileForPath(String path) {
560 return getFileForPath(
561 path,
562 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
563 }
564
565 private DownloadableFile getFileForPath(final String path, final String mime) {
566 if (path.startsWith("/")) {
567 return new DownloadableFile(path);
568 } else {
569 return getLegacyFileForFilename(path, mime);
570 }
571 }
572
573 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
574 if (Strings.isNullOrEmpty(mime)) {
575 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
576 } else if (mime.startsWith("image/")) {
577 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
578 } else if (mime.startsWith("video/")) {
579 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
580 } else {
581 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
582 }
583 }
584
585 public boolean isInternalFile(final File file) {
586 final File internalFile = getFileForPath(file.getName());
587 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
588 }
589
590 public DownloadableFile getFile(Message message, boolean decrypted) {
591 final boolean encrypted =
592 !decrypted
593 && (message.getEncryption() == Message.ENCRYPTION_PGP
594 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
595 String path = message.getRelativeFilePath();
596 if (path == null) {
597 path = message.getUuid();
598 }
599 final var msgFile = getFileForPath(path, message.getMimeType());
600
601 final DownloadableFile file;
602 if (encrypted) {
603 file = new DownloadableFile(
604 mXmppConnectionService.getCacheDir(),
605 String.format("%s.%s", msgFile.getName(), "pgp"));
606 } else {
607 file = msgFile;
608 }
609
610 try {
611 if (file.exists() && file.toString().startsWith(mXmppConnectionService.getCacheDir().toString())) {
612 java.nio.file.Files.setAttribute(file.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
613 }
614 } catch (final IOException e) {
615 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + file);
616 }
617
618 return file;
619 }
620
621 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
622 final List<Attachment> attachments = new ArrayList<>();
623 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
624 final String mime =
625 MimeUtils.guessMimeTypeFromExtension(
626 MimeUtils.extractRelevantExtension(relativeFilePath.path));
627 final File file = getFileForPath(relativeFilePath.path, mime);
628 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
629 }
630 return attachments;
631 }
632
633 private File getLegacyStorageLocation(final String type) {
634 if (Config.ONLY_INTERNAL_STORAGE) {
635 return new File(mXmppConnectionService.getFilesDir(), type);
636 } else {
637 final File appDirectory =
638 new File(
639 Environment.getExternalStorageDirectory(),
640 mXmppConnectionService.getString(R.string.app_name));
641 final File appMediaDirectory = new File(appDirectory, "Media");
642 final String locationName =
643 String.format(
644 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
645 return new File(appMediaDirectory, locationName);
646 }
647 }
648
649 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
650 int w = originalBitmap.getWidth();
651 int h = originalBitmap.getHeight();
652 if (w <= 0 || h <= 0) {
653 throw new IOException("Decoded bitmap reported bounds smaller 0");
654 } else if (Math.max(w, h) > size) {
655 int scalledW;
656 int scalledH;
657 if (w <= h) {
658 scalledW = Math.max((int) (w / ((double) h / size)), 1);
659 scalledH = size;
660 } else {
661 scalledW = size;
662 scalledH = Math.max((int) (h / ((double) w / size)), 1);
663 }
664 final Bitmap result =
665 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
666 if (!originalBitmap.isRecycled()) {
667 originalBitmap.recycle();
668 }
669 return result;
670 } else {
671 return originalBitmap;
672 }
673 }
674
675 public long getUriSize(final Uri uri) {
676 Cursor cursor = null;
677 try {
678 cursor = mXmppConnectionService.getContentResolver().query(uri, null, null, null, null);
679 if (cursor != null && cursor.moveToFirst()) {
680 int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
681 return cursor.getLong(sizeIndex);
682 }
683 } finally {
684 if (cursor != null) {
685 cursor.close();
686 }
687 }
688 return 0; // Return 0 if the size information is not available
689 }
690
691 public boolean useImageAsIs(final Uri uri) {
692 try {
693 for (Cid cid : calculateCids(uri)) {
694 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
695 }
696
697 long fsize = getUriSize(uri);
698 if (fsize == 0 || fsize >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
699 return false;
700 }
701
702 if (android.os.Build.VERSION.SDK_INT >= 28) {
703 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
704 int[] size = new int[] { 0, 0 };
705 boolean[] animated = new boolean[] { false };
706 String[] mimeType = new String[] { null };
707 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
708 mimeType[0] = info.getMimeType();
709 animated[0] = info.isAnimated();
710 size[0] = info.getSize().getWidth();
711 size[1] = info.getSize().getHeight();
712 });
713
714 return animated[0] || (size[0] <= Config.IMAGE_SIZE && size[1] <= Config.IMAGE_SIZE);
715 }
716
717 BitmapFactory.Options options = new BitmapFactory.Options();
718 options.inJustDecodeBounds = true;
719 final InputStream inputStream =
720 mXmppConnectionService.getContentResolver().openInputStream(uri);
721 BitmapFactory.decodeStream(inputStream, null, options);
722 close(inputStream);
723 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
724 return false;
725 }
726 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE);
727 } catch (final IOException e) {
728 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
729 return false;
730 }
731 }
732
733 public String getOriginalPath(final Uri uri) {
734 return FileUtils.getPath(mXmppConnectionService, uri);
735 }
736
737 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
738 Log.d(
739 Config.LOGTAG,
740 "copy file (" + file + ") to " + df);
741 try (final InputStream is = new FileInputStream(file);
742 final OutputStream os =
743 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
744 if (is == null) {
745 throw new FileCopyException(R.string.error_file_not_found);
746 }
747 try {
748 ByteStreams.copy(is, os);
749 os.flush();
750 } catch (IOException e) {
751 throw new FileWriterException(file);
752 }
753 } catch (final FileNotFoundException e) {
754 throw new FileCopyException(R.string.error_file_not_found);
755 } catch (final FileWriterException e) {
756 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
757 } catch (final SecurityException | IllegalStateException e) {
758 throw new FileCopyException(R.string.error_security_exception);
759 } catch (final IOException e) {
760 throw new FileCopyException(R.string.error_io_exception);
761 }
762 }
763
764 private InputStream openInputStream(Uri uri) throws IOException {
765 if (uri != null && "data".equals(uri.getScheme())) {
766 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
767 byte[] data;
768 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
769 String[] parts2 = parts[0].split(";", 2);
770 parts[0] = parts2[0];
771 data = Base64.decode(parts[1], 0);
772 } else {
773 try {
774 data = parts[1].getBytes("UTF-8");
775 } catch (final IOException e) {
776 data = new byte[0];
777 }
778 }
779 return new ByteArrayInputStream(data);
780 }
781 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
782 if (is == null) throw new FileNotFoundException("File not found");
783 return is;
784 }
785
786 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
787 Log.d(
788 Config.LOGTAG,
789 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
790 file.getParentFile().mkdirs();
791 try {
792 if (!file.createNewFile() && file.length() > 0) {
793 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
794 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
795 }
796 } catch (IOException e) {
797 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
798 }
799 try (final OutputStream os = new FileOutputStream(file);
800 final InputStream is = openInputStream(uri)) {
801 if (is == null) {
802 throw new FileCopyException(R.string.error_file_not_found);
803 }
804 try {
805 ByteStreams.copy(is, os);
806 } catch (IOException e) {
807 throw new FileWriterException(file);
808 }
809 try {
810 os.flush();
811 } catch (IOException e) {
812 throw new FileWriterException(file);
813 }
814 } catch (final FileNotFoundException e) {
815 cleanup(file);
816 throw new FileCopyException(R.string.error_file_not_found);
817 } catch (final FileWriterException e) {
818 cleanup(file);
819 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
820 } catch (final SecurityException | IllegalStateException e) {
821 cleanup(file);
822 throw new FileCopyException(R.string.error_security_exception);
823 } catch (final IOException e) {
824 cleanup(file);
825 throw new FileCopyException(R.string.error_io_exception);
826 }
827 }
828
829 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
830 throws FileCopyException {
831 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
832 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
833 String extension = MimeUtils.guessExtensionFromMimeType(mime);
834 if (extension == null) {
835 Log.d(Config.LOGTAG, "extension from mime type was null");
836 extension = getExtensionFromUri(uri);
837 }
838 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
839 extension = "oga";
840 }
841
842 try {
843 setupRelativeFilePath(message, uri, extension);
844 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
845 final String name = getDisplayNameFromUri(uri);
846 if (name != null) {
847 message.getFileParams().setName(name);
848 }
849 } catch (final XmppConnectionService.BlockedMediaException e) {
850 message.setRelativeFilePath(null);
851 message.setDeleted(true);
852 }
853 }
854
855 private String getDisplayNameFromUri(final Uri uri) {
856 final String[] projection = {OpenableColumns.DISPLAY_NAME};
857 String filename = null;
858 try (final Cursor cursor =
859 mXmppConnectionService
860 .getContentResolver()
861 .query(uri, projection, null, null, null)) {
862 if (cursor != null && cursor.moveToFirst()) {
863 filename = cursor.getString(0);
864 }
865 } catch (final Exception e) {
866 filename = null;
867 }
868 return filename;
869 }
870
871 private String getExtensionFromUri(final Uri uri) {
872 final String[] projection = {MediaStore.MediaColumns.DATA};
873 String filename = null;
874 try (final Cursor cursor =
875 mXmppConnectionService
876 .getContentResolver()
877 .query(uri, projection, null, null, null)) {
878 if (cursor != null && cursor.moveToFirst()) {
879 filename = cursor.getString(0);
880 }
881 } catch (final Exception e) {
882 filename = null;
883 }
884 if (filename == null) {
885 final List<String> segments = uri.getPathSegments();
886 if (segments.size() > 0) {
887 filename = segments.get(segments.size() - 1);
888 }
889 }
890 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
891 return pos > 0 ? filename.substring(pos + 1) : null;
892 }
893
894 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
895 throws FileCopyException, ImageCompressionException {
896 final File parent = file.getParentFile();
897 if (parent != null && parent.mkdirs()) {
898 Log.d(Config.LOGTAG, "created parent directory");
899 }
900 InputStream is = null;
901 OutputStream os = null;
902 try {
903 if (!file.exists() && !file.createNewFile()) {
904 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
905 }
906 is = mXmppConnectionService.getContentResolver().openInputStream(image);
907 if (is == null) {
908 throw new FileCopyException(R.string.error_not_an_image_file);
909 }
910 final Bitmap originalBitmap;
911 final BitmapFactory.Options options = new BitmapFactory.Options();
912 final int inSampleSize = (int) Math.pow(2, sampleSize);
913 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
914 options.inSampleSize = inSampleSize;
915 originalBitmap = BitmapFactory.decodeStream(is, null, options);
916 is.close();
917 if (originalBitmap == null) {
918 throw new ImageCompressionException("Source file was not an image");
919 }
920 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
921 originalBitmap.recycle();
922 throw new ImageCompressionException("Source file had alpha channel");
923 }
924 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
925 final int rotation = getRotation(image);
926 scaledBitmap = rotate(scaledBitmap, rotation);
927 boolean targetSizeReached = false;
928 int quality = Config.IMAGE_QUALITY;
929 final int imageMaxSize =
930 mXmppConnectionService
931 .getResources()
932 .getInteger(R.integer.auto_accept_filesize);
933 while (!targetSizeReached) {
934 os = new FileOutputStream(file);
935 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
936 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
937 if (!success) {
938 throw new FileCopyException(R.string.error_compressing_image);
939 }
940 os.flush();
941 final long fileSize = file.length();
942 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
943 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
944 quality -= 5;
945 }
946 scaledBitmap.recycle();
947 } catch (final FileNotFoundException e) {
948 cleanup(file);
949 throw new FileCopyException(R.string.error_file_not_found);
950 } catch (final IOException e) {
951 cleanup(file);
952 throw new FileCopyException(R.string.error_io_exception);
953 } catch (SecurityException e) {
954 cleanup(file);
955 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
956 } catch (final OutOfMemoryError e) {
957 ++sampleSize;
958 if (sampleSize <= 3) {
959 copyImageToPrivateStorage(file, image, sampleSize);
960 } else {
961 throw new FileCopyException(R.string.error_out_of_memory);
962 }
963 } finally {
964 close(os);
965 close(is);
966 }
967 }
968
969 private static void cleanup(final File file) {
970 try {
971 file.delete();
972 } catch (Exception e) {
973
974 }
975 }
976
977 public void copyImageToPrivateStorage(File file, Uri image)
978 throws FileCopyException, ImageCompressionException {
979 Log.d(
980 Config.LOGTAG,
981 "copy image ("
982 + image.toString()
983 + ") to private storage "
984 + file.getAbsolutePath());
985 copyImageToPrivateStorage(file, image, 0);
986 }
987
988 public void copyImageToPrivateStorage(Message message, Uri image)
989 throws FileCopyException, ImageCompressionException {
990 final String filename;
991 switch (Config.IMAGE_FORMAT) {
992 case JPEG:
993 filename = String.format("%s.%s", message.getUuid(), "jpg");
994 break;
995 case PNG:
996 filename = String.format("%s.%s", message.getUuid(), "png");
997 break;
998 case WEBP:
999 filename = String.format("%s.%s", message.getUuid(), "webp");
1000 break;
1001 default:
1002 throw new IllegalStateException("Unknown image format");
1003 }
1004 setupRelativeFilePath(message, filename);
1005 final File tmp = getFile(message);
1006 copyImageToPrivateStorage(tmp, image);
1007 final String extension = MimeUtils.extractRelevantExtension(filename);
1008 try {
1009 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
1010 } catch (final FileNotFoundException e) {
1011 throw new FileCopyException(R.string.error_file_not_found);
1012 } catch (final IOException e) {
1013 throw new FileCopyException(R.string.error_io_exception);
1014 } catch (final XmppConnectionService.BlockedMediaException e) {
1015 tmp.delete();
1016 message.setRelativeFilePath(null);
1017 message.setDeleted(true);
1018 return;
1019 }
1020 tmp.renameTo(getFile(message));
1021 updateFileParams(message, null, false);
1022 }
1023
1024 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1025 try {
1026 setupRelativeFilePath(message, openInputStream(uri), extension);
1027 } catch (final FileNotFoundException e) {
1028 throw new FileCopyException(R.string.error_file_not_found);
1029 } catch (final IOException e) {
1030 throw new FileCopyException(R.string.error_io_exception);
1031 }
1032 }
1033
1034 public Cid[] calculateCids(final Uri uri) throws IOException {
1035 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1036 }
1037
1038 public Cid[] calculateCids(final InputStream is) throws IOException {
1039 try {
1040 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1041 } catch (final NoSuchAlgorithmException e) {
1042 throw new AssertionError(e);
1043 }
1044 }
1045
1046 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1047 message.setRelativeFilePath(getStorageLocation(message, is, extension).getAbsolutePath());
1048 }
1049
1050 public void setupRelativeFilePath(final Message message, final String filename) {
1051 final String extension = MimeUtils.extractRelevantExtension(filename);
1052 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1053 setupRelativeFilePath(message, filename, mime);
1054 }
1055
1056 public File getStorageLocation(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1057 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1058 Cid[] cids = calculateCids(is);
1059 String base = cids[0].toString();
1060
1061 File file = null;
1062 while (file == null || (file.exists() && !file.canRead())) {
1063 file = getStorageLocation(message, String.format("%s.%s", base, extension), mime);
1064 base += "_";
1065 }
1066 for (int i = 0; i < cids.length; i++) {
1067 mXmppConnectionService.saveCid(cids[i], file);
1068 }
1069 return file;
1070 }
1071
1072 public File getStorageLocation(final Message message, final String filename, final String mime) {
1073 final File parentDirectory;
1074 if (Strings.isNullOrEmpty(mime)) {
1075 parentDirectory =
1076 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1077 } else if (mime.startsWith("image/")) {
1078 parentDirectory =
1079 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1080 } else if (mime.startsWith("video/")) {
1081 parentDirectory =
1082 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1083 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1084 parentDirectory =
1085 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1086 } else {
1087 parentDirectory =
1088 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1089 }
1090 final File appDirectory =
1091 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1092 if (message == null || message.getStatus() == Message.STATUS_DUMMY || (message.getConversation() instanceof Conversation && ((Conversation) message.getConversation()).storeInCache())) {
1093 final var mediaCache = new File(mXmppConnectionService.getCacheDir(), "/media");
1094 return new File(mediaCache, filename);
1095 } else {
1096 return new File(appDirectory, filename);
1097 }
1098 }
1099
1100 public static boolean inConversationsDirectory(final Context context, String path) {
1101 final File fileDirectory = new File(path).getParentFile();
1102 for (final String type : STORAGE_TYPES) {
1103 final File typeDirectory =
1104 new File(
1105 Environment.getExternalStoragePublicDirectory(type),
1106 context.getString(R.string.app_name));
1107 if (typeDirectory.equals(fileDirectory)) {
1108 return true;
1109 }
1110 }
1111 return false;
1112 }
1113
1114 public void setupRelativeFilePath(
1115 final Message message, final String filename, final String mime) {
1116 final File file = getStorageLocation(message, filename, mime);
1117 message.setRelativeFilePath(file.getAbsolutePath());
1118 }
1119
1120 public boolean unusualBounds(final Uri image) {
1121 try {
1122 final BitmapFactory.Options options = new BitmapFactory.Options();
1123 options.inJustDecodeBounds = true;
1124 final InputStream inputStream =
1125 mXmppConnectionService.getContentResolver().openInputStream(image);
1126 BitmapFactory.decodeStream(inputStream, null, options);
1127 close(inputStream);
1128 float ratio = (float) options.outHeight / options.outWidth;
1129 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1130 } catch (final Exception e) {
1131 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1132 return false;
1133 }
1134 }
1135
1136 private int getRotation(final File file) {
1137 try (final InputStream inputStream = new FileInputStream(file)) {
1138 return getRotation(inputStream);
1139 } catch (Exception e) {
1140 return 0;
1141 }
1142 }
1143
1144 private int getRotation(final Uri image) {
1145 try (final InputStream is =
1146 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1147 return is == null ? 0 : getRotation(is);
1148 } catch (final Exception e) {
1149 return 0;
1150 }
1151 }
1152
1153 private static int getRotation(final InputStream inputStream) throws IOException {
1154 final ExifInterface exif = new ExifInterface(inputStream);
1155 final int orientation =
1156 exif.getAttributeInt(
1157 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1158 switch (orientation) {
1159 case ExifInterface.ORIENTATION_ROTATE_180:
1160 return 180;
1161 case ExifInterface.ORIENTATION_ROTATE_90:
1162 return 90;
1163 case ExifInterface.ORIENTATION_ROTATE_270:
1164 return 270;
1165 default:
1166 return 0;
1167 }
1168 }
1169
1170 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1171 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1172 if (thumbs != null && !thumbs.isEmpty()) {
1173 for (Element thumb : thumbs) {
1174 final var uriS = thumb.getAttribute("uri");
1175 if (uriS == null) continue;
1176 Uri uri = Uri.parse(uriS);
1177 if (uri.getScheme().equals("data")) {
1178 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1179
1180 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1181 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1182 if (cached != null || cacheOnly) return cached;
1183
1184 byte[] data;
1185 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1186 String[] parts2 = parts[0].split(";", 2);
1187 parts[0] = parts2[0];
1188 data = Base64.decode(parts[1], 0);
1189 } else {
1190 try {
1191 data = parts[1].getBytes("UTF-8");
1192 } catch (final IOException e) {
1193 data = new byte[0];
1194 }
1195 }
1196
1197 if (parts[0].equals("image/blurhash")) {
1198 int width = message.getFileParams().width;
1199 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1200 if (width < 1) width = 1920;
1201
1202 int height = message.getFileParams().height;
1203 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1204 if (height < 1) height = 1080;
1205 Rect r = rectForSize(width, height, size);
1206
1207 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1208 if (blurhash != null) {
1209 cached = new BitmapDrawable(blurhash);
1210 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1211 return cached;
1212 }
1213 } else if (parts[0].equals("image/thumbhash")) {
1214 ThumbHash.Image image;
1215 try {
1216 image = ThumbHash.thumbHashToRGBA(data);
1217 } catch (final Exception e) {
1218 continue;
1219 }
1220 int[] pixels = new int[image.width * image.height];
1221 for (int i = 0; i < pixels.length; i++) {
1222 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);
1223 }
1224 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1225 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1226 return cached;
1227 }
1228 }
1229 }
1230 }
1231
1232 return null;
1233 }
1234
1235 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1236 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1237 DownloadableFile file = getFile(message);
1238 Drawable thumbnail = cache.get(file.getAbsolutePath());
1239 if (thumbnail != null) return thumbnail;
1240
1241 if ((thumbnail == null) && (!cacheOnly)) {
1242 synchronized (THUMBNAIL_LOCK) {
1243 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1244 if (thumbs != null && !thumbs.isEmpty()) {
1245 for (Element thumb : thumbs) {
1246 final var uriS = thumb.getAttribute("uri");
1247 if (uriS == null) continue;
1248 Uri uri = Uri.parse(uriS);
1249 if (uri.getScheme().equals("data")) {
1250 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1251 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1252
1253 byte[] data;
1254 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1255 String[] parts2 = parts[0].split(";", 2);
1256 parts[0] = parts2[0];
1257 data = Base64.decode(parts[1], 0);
1258 } else {
1259 data = parts[1].getBytes("UTF-8");
1260 }
1261
1262 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1263 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1264
1265 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1266 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1267 int w = info.getSize().getWidth();
1268 int h = info.getSize().getHeight();
1269 Rect r = rectForSize(w, h, size);
1270 decoder.setTargetSize(r.width(), r.height());
1271 });
1272
1273 if (thumbnail != null && file.getAbsolutePath() != null) {
1274 cache.put(file.getAbsolutePath(), thumbnail);
1275 return thumbnail;
1276 }
1277 } else if (uri.getScheme().equals("cid")) {
1278 Cid cid = BobTransfer.cid(uri);
1279 if (cid == null) continue;
1280 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1281 if (f != null && f.canRead()) {
1282 return getThumbnail(f, res, size, cacheOnly);
1283 }
1284 }
1285 }
1286 }
1287 }
1288 }
1289
1290 return getThumbnail(file, res, size, cacheOnly);
1291 }
1292
1293 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1294 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1295 }
1296
1297 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1298 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1299 Drawable thumbnail = cache.get(cacheKey);
1300 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1301 synchronized (THUMBNAIL_LOCK) {
1302 thumbnail = cache.get(cacheKey);
1303 if (thumbnail != null) {
1304 return thumbnail;
1305 }
1306 final String mime = file.getMimeType();
1307 if ("image/svg+xml".equals(mime)) {
1308 thumbnail = getSVG(file, size);
1309 } else if ("application/pdf".equals(mime)) {
1310 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1311 } else if (mime.startsWith("video/")) {
1312 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1313 } else {
1314 thumbnail = getImagePreview(file, res, size, mime);
1315 if (thumbnail == null) {
1316 throw new FileNotFoundException();
1317 }
1318 }
1319 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1320 }
1321 }
1322 return thumbnail;
1323 }
1324
1325 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1326 final Drawable drawable = getThumbnail(message, res, size, false);
1327 if (drawable == null) return null;
1328 return drawDrawable(drawable);
1329 }
1330
1331 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1332 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1333 if (drawable == null) return null;
1334 return drawDrawable(drawable);
1335 }
1336
1337 public static Rect rectForSize(int w, int h, int size) {
1338 int scalledW;
1339 int scalledH;
1340 if (w <= h) {
1341 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1342 scalledH = size;
1343 } else {
1344 scalledW = size;
1345 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1346 }
1347
1348 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1349
1350 return new Rect(0, 0, scalledW, scalledH);
1351 }
1352
1353 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1354 if (android.os.Build.VERSION.SDK_INT >= 28) {
1355 ImageDecoder.Source source = ImageDecoder.createSource(file);
1356 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1357 int w = info.getSize().getWidth();
1358 int h = info.getSize().getHeight();
1359 Rect r = rectForSize(w, h, size);
1360 decoder.setTargetSize(r.width(), r.height());
1361 });
1362 } else {
1363 BitmapFactory.Options options = new BitmapFactory.Options();
1364 options.inSampleSize = calcSampleSize(file, size);
1365 Bitmap bitmap = null;
1366 try {
1367 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1368 } catch (OutOfMemoryError e) {
1369 options.inSampleSize *= 2;
1370 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1371 }
1372 if (bitmap == null) return null;
1373
1374 bitmap = resize(bitmap, size);
1375 bitmap = rotate(bitmap, getRotation(file));
1376 if (mime.equals("image/gif")) {
1377 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1378 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1379 bitmap.recycle();
1380 bitmap = withGifOverlay;
1381 }
1382 return new BitmapDrawable(res, bitmap);
1383 }
1384 }
1385
1386 public static Bitmap drawDrawable(Drawable drawable) {
1387 if (drawable == null) return null;
1388
1389 Bitmap bitmap = null;
1390
1391 if (drawable instanceof BitmapDrawable) {
1392 bitmap = ((BitmapDrawable) drawable).getBitmap();
1393 if (bitmap != null) return bitmap;
1394 }
1395
1396 Rect bounds = drawable.getBounds();
1397 int width = drawable.getIntrinsicWidth();
1398 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1399 int height = drawable.getIntrinsicHeight();
1400 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1401
1402 if (width < 1) {
1403 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1404 width = 48;
1405 }
1406 if (height < 1) {
1407 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1408 height = 48;
1409 }
1410
1411 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1412 Canvas canvas = new Canvas(bitmap);
1413 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1414 drawable.draw(canvas);
1415 return bitmap;
1416 }
1417
1418 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1419 Bitmap overlay =
1420 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1421 Canvas canvas = new Canvas(bitmap);
1422 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1423 Log.d(
1424 Config.LOGTAG,
1425 "target size overlay: "
1426 + targetSize
1427 + " overlay bitmap size was "
1428 + overlay.getHeight());
1429 float left = (canvas.getWidth() - targetSize) / 2.0f;
1430 float top = (canvas.getHeight() - targetSize) / 2.0f;
1431 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1432 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1433 }
1434
1435 /** https://stackoverflow.com/a/3943023/210897 */
1436 private boolean paintOverlayBlack(final Bitmap bitmap) {
1437 final int h = bitmap.getHeight();
1438 final int w = bitmap.getWidth();
1439 int record = 0;
1440 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1441 for (int x = Math.round(w * IGNORE_PADDING);
1442 x < w - Math.round(w * IGNORE_PADDING);
1443 ++x) {
1444 int pixel = bitmap.getPixel(x, y);
1445 if ((Color.red(pixel) * 0.299
1446 + Color.green(pixel) * 0.587
1447 + Color.blue(pixel) * 0.114)
1448 > 186) {
1449 --record;
1450 } else {
1451 ++record;
1452 }
1453 }
1454 }
1455 return record < 0;
1456 }
1457
1458 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1459 final int h = bitmap.getHeight();
1460 final int w = bitmap.getWidth();
1461 int white = 0;
1462 for (int y = 0; y < h; ++y) {
1463 for (int x = 0; x < w; ++x) {
1464 int pixel = bitmap.getPixel(x, y);
1465 if ((Color.red(pixel) * 0.299
1466 + Color.green(pixel) * 0.587
1467 + Color.blue(pixel) * 0.114)
1468 > 186) {
1469 white++;
1470 }
1471 }
1472 }
1473 return white > (h * w * 0.4f);
1474 }
1475
1476 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1477 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1478 Bitmap frame;
1479 try {
1480 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1481 frame = metadataRetriever.getFrameAtTime(0);
1482 metadataRetriever.release();
1483 return cropCenterSquare(frame, size);
1484 } catch (Exception e) {
1485 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1486 frame.eraseColor(0xff000000);
1487 return frame;
1488 }
1489 }
1490
1491 private Bitmap getVideoPreview(final File file, final int size) {
1492 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1493 Bitmap frame;
1494 try {
1495 metadataRetriever.setDataSource(file.getAbsolutePath());
1496 frame = metadataRetriever.getFrameAtTime(0);
1497 metadataRetriever.release();
1498 frame = resize(frame, size);
1499 } catch (IOException | RuntimeException e) {
1500 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1501 frame.eraseColor(0xff000000);
1502 }
1503 drawOverlay(
1504 frame,
1505 paintOverlayBlack(frame)
1506 ? R.drawable.play_video_black
1507 : R.drawable.play_video_white,
1508 0.75f);
1509 return frame;
1510 }
1511
1512 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1513 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1514 try {
1515 final ParcelFileDescriptor fileDescriptor =
1516 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1517 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1518 drawOverlay(
1519 rendered,
1520 paintOverlayBlackPdf(rendered)
1521 ? R.drawable.open_pdf_black
1522 : R.drawable.open_pdf_white,
1523 0.75f);
1524 return rendered;
1525 } catch (final IOException | SecurityException e) {
1526 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1527 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1528 placeholder.eraseColor(0xff000000);
1529 return placeholder;
1530 }
1531 }
1532
1533 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1534 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1535 try {
1536 ParcelFileDescriptor fileDescriptor =
1537 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1538 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1539 return cropCenterSquare(bitmap, size);
1540 } catch (Exception e) {
1541 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1542 placeholder.eraseColor(0xff000000);
1543 return placeholder;
1544 }
1545 }
1546
1547 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1548 private Bitmap renderPdfDocument(
1549 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1550 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1551 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1552 final Dimensions dimensions =
1553 scalePdfDimensions(
1554 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1555 final Bitmap rendered =
1556 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1557 rendered.eraseColor(0xffffffff);
1558 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1559 page.close();
1560 pdfRenderer.close();
1561 fileDescriptor.close();
1562 return rendered;
1563 }
1564
1565 public Uri getTakePhotoUri() {
1566 final String filename =
1567 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1568 final File directory;
1569 if (Config.ONLY_INTERNAL_STORAGE) {
1570 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1571 } else {
1572 directory =
1573 new File(
1574 Environment.getExternalStoragePublicDirectory(
1575 Environment.DIRECTORY_DCIM),
1576 "Camera");
1577 }
1578 final File file = new File(directory, filename);
1579 file.getParentFile().mkdirs();
1580 return getUriForFile(mXmppConnectionService, file);
1581 }
1582
1583 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1584
1585 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1586 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1587 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1588 return uncompressAvatar.first;
1589 }
1590 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1591 Log.d(
1592 Config.LOGTAG,
1593 "uncompressed avatar exceeded char limit by "
1594 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1595 }
1596
1597 Bitmap bm = cropCenterSquare(image, size);
1598 if (bm == null) {
1599 return null;
1600 }
1601 if (hasAlpha(bm)) {
1602 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1603 bm.recycle();
1604 bm = cropCenterSquare(image, 96);
1605 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1606 }
1607 return getPepAvatar(bm, format, 100);
1608 }
1609
1610 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1611 try {
1612 if (android.os.Build.VERSION.SDK_INT >= 28) {
1613 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1614 int[] size = new int[] { 0, 0 };
1615 boolean[] animated = new boolean[] { false };
1616 String[] mimeType = new String[] { null };
1617 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1618 mimeType[0] = info.getMimeType();
1619 animated[0] = info.isAnimated();
1620 size[0] = info.getSize().getWidth();
1621 size[1] = info.getSize().getHeight();
1622 });
1623
1624 if (animated[0]) {
1625 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1626 if (avatar != null) return new Pair(avatar, true);
1627 }
1628
1629 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1630 } else {
1631 Bitmap bitmap =
1632 BitmapFactory.decodeStream(
1633 mXmppConnectionService.getContentResolver().openInputStream(uri));
1634 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1635 }
1636 } catch (Exception e) {
1637 try {
1638 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1639 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1640 } catch (Exception e2) {
1641 return null;
1642 }
1643 }
1644 }
1645
1646 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1647 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1648 if (fd.getLength() > 100000) return null; // Too big to use raw file
1649
1650 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1651 Base64OutputStream mBase64OutputStream =
1652 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1653 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1654 DigestOutputStream mDigestOutputStream =
1655 new DigestOutputStream(mBase64OutputStream, digest);
1656
1657 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1658 mDigestOutputStream.flush();
1659 mDigestOutputStream.close();
1660
1661 final Avatar avatar = new Avatar();
1662 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1663 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1664 avatar.type = mimeType;
1665 avatar.width = width;
1666 avatar.height = height;
1667 return avatar;
1668 }
1669
1670 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1671 try {
1672 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1673 Base64OutputStream mBase64OutputStream =
1674 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1675 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1676 DigestOutputStream mDigestOutputStream =
1677 new DigestOutputStream(mBase64OutputStream, digest);
1678 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1679 return null;
1680 }
1681 mDigestOutputStream.flush();
1682 mDigestOutputStream.close();
1683 long chars = mByteArrayOutputStream.size();
1684 if (format != Bitmap.CompressFormat.PNG
1685 && quality >= 50
1686 && chars >= Config.AVATAR_CHAR_LIMIT) {
1687 int q = quality - 2;
1688 Log.d(
1689 Config.LOGTAG,
1690 "avatar char length was " + chars + " reducing quality to " + q);
1691 return getPepAvatar(bitmap, format, q);
1692 }
1693 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1694 final Avatar avatar = new Avatar();
1695 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1696 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1697 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1698 avatar.type = "image/webp";
1699 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1700 avatar.type = "image/jpeg";
1701 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1702 avatar.type = "image/png";
1703 }
1704 avatar.width = bitmap.getWidth();
1705 avatar.height = bitmap.getHeight();
1706 return avatar;
1707 } catch (OutOfMemoryError e) {
1708 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1709 return null;
1710 } catch (Exception e) {
1711 return null;
1712 }
1713 }
1714
1715 public Avatar getStoredPepAvatar(String hash) {
1716 if (hash == null) {
1717 return null;
1718 }
1719 Avatar avatar = new Avatar();
1720 final File file = getAvatarFile(hash);
1721 FileInputStream is = null;
1722 try {
1723 avatar.size = file.length();
1724 BitmapFactory.Options options = new BitmapFactory.Options();
1725 options.inJustDecodeBounds = true;
1726 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1727 is = new FileInputStream(file);
1728 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1729 Base64OutputStream mBase64OutputStream =
1730 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1731 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1732 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1733 byte[] buffer = new byte[4096];
1734 int length;
1735 while ((length = is.read(buffer)) > 0) {
1736 os.write(buffer, 0, length);
1737 }
1738 os.flush();
1739 os.close();
1740 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1741 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1742 avatar.height = options.outHeight;
1743 avatar.width = options.outWidth;
1744 avatar.type = options.outMimeType;
1745 return avatar;
1746 } catch (NoSuchAlgorithmException | IOException e) {
1747 return null;
1748 } finally {
1749 close(is);
1750 }
1751 }
1752
1753 public boolean isAvatarCached(Avatar avatar) {
1754 final File file = getAvatarFile(avatar.getFilename());
1755 return file.exists();
1756 }
1757
1758 public boolean save(final Avatar avatar) {
1759 File file;
1760 if (isAvatarCached(avatar)) {
1761 file = getAvatarFile(avatar.getFilename());
1762 avatar.size = file.length();
1763 } else {
1764 file =
1765 new File(
1766 mXmppConnectionService.getCacheDir().getAbsolutePath()
1767 + "/"
1768 + UUID.randomUUID().toString());
1769 if (file.getParentFile().mkdirs()) {
1770 Log.d(Config.LOGTAG, "created cache directory");
1771 }
1772 OutputStream os = null;
1773 try {
1774 if (!file.createNewFile()) {
1775 Log.d(
1776 Config.LOGTAG,
1777 "unable to create temporary file " + file.getAbsolutePath());
1778 }
1779 os = new FileOutputStream(file);
1780 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1781 digest.reset();
1782 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1783 final byte[] bytes = avatar.getImageAsBytes();
1784 mDigestOutputStream.write(bytes);
1785 mDigestOutputStream.flush();
1786 mDigestOutputStream.close();
1787 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1788 if (sha1sum.equals(avatar.sha1sum)) {
1789 final File outputFile = getAvatarFile(avatar.getFilename());
1790 if (outputFile.getParentFile().mkdirs()) {
1791 Log.d(Config.LOGTAG, "created avatar directory");
1792 }
1793 final File avatarFile = getAvatarFile(avatar.getFilename());
1794 if (!file.renameTo(avatarFile)) {
1795 Log.d(
1796 Config.LOGTAG,
1797 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1798 return false;
1799 }
1800 } else {
1801 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1802 if (!file.delete()) {
1803 Log.d(Config.LOGTAG, "unable to delete temporary file");
1804 }
1805 return false;
1806 }
1807 avatar.size = bytes.length;
1808 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1809 return false;
1810 } finally {
1811 close(os);
1812 }
1813 }
1814 return true;
1815 }
1816
1817 public void deleteHistoricAvatarPath() {
1818 delete(getHistoricAvatarPath());
1819 }
1820
1821 private void delete(final File file) {
1822 if (file.isDirectory()) {
1823 final File[] files = file.listFiles();
1824 if (files != null) {
1825 for (final File f : files) {
1826 delete(f);
1827 }
1828 }
1829 }
1830 if (file.delete()) {
1831 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1832 }
1833 }
1834
1835 private File getHistoricAvatarPath() {
1836 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1837 }
1838
1839 public File getAvatarFile(String avatar) {
1840 final var f = new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1841 try {
1842 if (f.exists()) java.nio.file.Files.setAttribute(f.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
1843 } catch (final IOException e) {
1844 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + f);
1845 }
1846 return f;
1847 }
1848
1849 public Uri getAvatarUri(String avatar) {
1850 return Uri.fromFile(getAvatarFile(avatar));
1851 }
1852
1853 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1854 if (android.os.Build.VERSION.SDK_INT >= 28) {
1855 try {
1856 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1857 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1858 int w = info.getSize().getWidth();
1859 int h = info.getSize().getHeight();
1860 Rect r = rectForSize(w, h, size);
1861 decoder.setTargetSize(r.width(), r.height());
1862
1863 int newSize = Math.min(r.width(), r.height());
1864 int left = (r.width() - newSize) / 2;
1865 int top = (r.height() - newSize) / 2;
1866 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1867 });
1868 } catch (final IOException e) {
1869 return getSVGSquare(image, size);
1870 }
1871 } else {
1872 Bitmap bitmap = cropCenterSquare(image, size);
1873 return bitmap == null ? null : new BitmapDrawable(bitmap);
1874 }
1875 }
1876
1877 public Bitmap cropCenterSquare(Uri image, int size) {
1878 if (image == null) {
1879 return null;
1880 }
1881 InputStream is = null;
1882 try {
1883 BitmapFactory.Options options = new BitmapFactory.Options();
1884 options.inSampleSize = calcSampleSize(image, size);
1885 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1886 if (is == null) {
1887 return null;
1888 }
1889 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1890 if (input == null) {
1891 return null;
1892 } else {
1893 input = rotate(input, getRotation(image));
1894 return cropCenterSquare(input, size);
1895 }
1896 } catch (FileNotFoundException | SecurityException e) {
1897 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1898 return null;
1899 } finally {
1900 close(is);
1901 }
1902 }
1903
1904 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1905 if (image == null) {
1906 return null;
1907 }
1908 InputStream is = null;
1909 try {
1910 BitmapFactory.Options options = new BitmapFactory.Options();
1911 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1912 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1913 if (is == null) {
1914 return null;
1915 }
1916 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1917 if (source == null) {
1918 return null;
1919 }
1920 int sourceWidth = source.getWidth();
1921 int sourceHeight = source.getHeight();
1922 float xScale = (float) newWidth / sourceWidth;
1923 float yScale = (float) newHeight / sourceHeight;
1924 float scale = Math.max(xScale, yScale);
1925 float scaledWidth = scale * sourceWidth;
1926 float scaledHeight = scale * sourceHeight;
1927 float left = (newWidth - scaledWidth) / 2;
1928 float top = (newHeight - scaledHeight) / 2;
1929
1930 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1931 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1932 Canvas canvas = new Canvas(dest);
1933 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1934 if (source.isRecycled()) {
1935 source.recycle();
1936 }
1937 return dest;
1938 } catch (SecurityException e) {
1939 return null; // android 6.0 with revoked permissions for example
1940 } catch (FileNotFoundException e) {
1941 return null;
1942 } finally {
1943 close(is);
1944 }
1945 }
1946
1947 public Bitmap cropCenterSquare(Bitmap input, int size) {
1948 int w = input.getWidth();
1949 int h = input.getHeight();
1950
1951 float scale = Math.max((float) size / h, (float) size / w);
1952
1953 float outWidth = scale * w;
1954 float outHeight = scale * h;
1955 float left = (size - outWidth) / 2;
1956 float top = (size - outHeight) / 2;
1957 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1958
1959 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1960 Canvas canvas = new Canvas(output);
1961 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1962 if (!input.isRecycled()) {
1963 input.recycle();
1964 }
1965 return output;
1966 }
1967
1968 private int calcSampleSize(Uri image, int size)
1969 throws FileNotFoundException, SecurityException {
1970 final BitmapFactory.Options options = new BitmapFactory.Options();
1971 options.inJustDecodeBounds = true;
1972 final InputStream inputStream =
1973 mXmppConnectionService.getContentResolver().openInputStream(image);
1974 BitmapFactory.decodeStream(inputStream, null, options);
1975 close(inputStream);
1976 return calcSampleSize(options, size);
1977 }
1978
1979 public void updateFileParams(Message message) {
1980 updateFileParams(message, null);
1981 }
1982
1983 public void updateFileParams(final Message message, final String url) {
1984 updateFileParams(message, url, true);
1985 }
1986
1987 public void updateFileParams(final Message message, String url, boolean updateCids) {
1988 final boolean encrypted =
1989 message.getEncryption() == Message.ENCRYPTION_PGP
1990 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1991 final DownloadableFile file = getFile(message);
1992 final String mime = file.getMimeType();
1993 final boolean privateMessage = message.isPrivateMessage();
1994 final boolean image =
1995 message.getType() == Message.TYPE_IMAGE
1996 || (mime != null && mime.startsWith("image/"));
1997 Message.FileParams fileParams = message.getFileParams();
1998 if (fileParams == null) fileParams = new Message.FileParams();
1999 Cid[] cids = new Cid[0];
2000 try {
2001 cids = calculateCids(new FileInputStream(file));
2002 fileParams.setCids(List.of(cids));
2003 } catch (final IOException | NoSuchAlgorithmException e) { }
2004 if (url == null) {
2005 for (Cid cid : cids) {
2006 url = mXmppConnectionService.getUrlForCid(cid);
2007 if (url != null) {
2008 fileParams.url = url;
2009 break;
2010 }
2011 }
2012 } else {
2013 fileParams.url = url;
2014 }
2015 if (fileParams.getName() == null) fileParams.setName(file.getName());
2016 fileParams.setMediaType(mime);
2017 if (encrypted && !file.exists()) {
2018 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
2019 final DownloadableFile encryptedFile = getFile(message, false);
2020 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
2021 } else {
2022 Log.d(Config.LOGTAG, "running updateFileParams");
2023 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
2024 final boolean video = mime != null && mime.startsWith("video/");
2025 final boolean audio = mime != null && mime.startsWith("audio/");
2026 final boolean pdf = "application/pdf".equals(mime);
2027 if (file.canRead()) fileParams.size = file.getSize();
2028 if (ambiguous) {
2029 try {
2030 final Dimensions dimensions = getVideoDimensions(file);
2031 if (dimensions.valid()) {
2032 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
2033 fileParams.width = dimensions.width;
2034 fileParams.height = dimensions.height;
2035 } else {
2036 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2037 fileParams.runtime = getMediaRuntime(file);
2038 }
2039 } catch (final IOException | NotAVideoFile e) {
2040 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2041 fileParams.runtime = getMediaRuntime(file);
2042 }
2043 } else if (image || video || pdf) {
2044 try {
2045 final Dimensions dimensions;
2046 if (video) {
2047 dimensions = getVideoDimensions(file);
2048 } else if (pdf) {
2049 dimensions = getPdfDocumentDimensions(file);
2050 } else if ("image/svg+xml".equals(mime)) {
2051 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2052 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2053 } else {
2054 dimensions = getImageDimensions(file);
2055 }
2056 if (dimensions.valid()) {
2057 fileParams.width = dimensions.width;
2058 fileParams.height = dimensions.height;
2059 }
2060 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2061 Log.d(
2062 Config.LOGTAG,
2063 "file with mime type " + file.getMimeType() + " was not a video file");
2064 // fall threw
2065 }
2066 } else if (audio) {
2067 fileParams.runtime = getMediaRuntime(file);
2068 }
2069 if ("application/xdc+zip".equals(mime)) {
2070 try {
2071 final var zip = new ZipFile(file);
2072 final ZipEntry manifestEntry = zip == null ? null : zip.getEntry("manifest.toml");
2073 if (manifestEntry != null) {
2074 final var manifest = Toml.parse(zip.getInputStream(manifestEntry));
2075 if (manifest != null) {
2076 final var name = manifest.getString("name");
2077 if (name != null) fileParams.setName(name);
2078 }
2079 }
2080 } catch (final IOException e2) { }
2081 }
2082 try {
2083 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2084 if (thumb != null) {
2085 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2086 byte[] rgba = new byte[pixels.length * 4];
2087 try {
2088 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2089 } catch (final IllegalStateException e) {
2090 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2091 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2092 softThumb.recycle();
2093 }
2094 for (int i = 0; i < pixels.length; i++) {
2095 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2096 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2097 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2098 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2099 }
2100 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2101 }
2102 } catch (final IOException e) { }
2103 }
2104 message.setFileParams(fileParams);
2105 message.setDeleted(false);
2106 message.setType(
2107 privateMessage
2108 ? Message.TYPE_PRIVATE_FILE
2109 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2110
2111 if (updateCids) {
2112 try {
2113 for (int i = 0; i < cids.length; i++) {
2114 mXmppConnectionService.saveCid(cids[i], file);
2115 }
2116 } catch (XmppConnectionService.BlockedMediaException e) { }
2117 }
2118 }
2119
2120 private int getMediaRuntime(final File file) {
2121 try {
2122 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2123 mediaMetadataRetriever.setDataSource(file.toString());
2124 final String value =
2125 mediaMetadataRetriever.extractMetadata(
2126 MediaMetadataRetriever.METADATA_KEY_DURATION);
2127 if (Strings.isNullOrEmpty(value)) {
2128 return 0;
2129 }
2130 return Integer.parseInt(value);
2131 } catch (final Exception e) {
2132 return 0;
2133 }
2134 }
2135
2136 private Dimensions getImageDimensions(File file) {
2137 final BitmapFactory.Options options = new BitmapFactory.Options();
2138 options.inJustDecodeBounds = true;
2139 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2140 final int rotation = getRotation(file);
2141 final boolean rotated = rotation == 90 || rotation == 270;
2142 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2143 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2144 return new Dimensions(imageHeight, imageWidth);
2145 }
2146
2147 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2148 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2149 try {
2150 metadataRetriever.setDataSource(file.getAbsolutePath());
2151 } catch (RuntimeException e) {
2152 throw new NotAVideoFile(e);
2153 }
2154 return getVideoDimensions(metadataRetriever);
2155 }
2156
2157 private Dimensions getPdfDocumentDimensions(final File file) {
2158 final ParcelFileDescriptor fileDescriptor;
2159 try {
2160 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2161 if (fileDescriptor == null) {
2162 return new Dimensions(0, 0);
2163 }
2164 } catch (final FileNotFoundException e) {
2165 return new Dimensions(0, 0);
2166 }
2167 try {
2168 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2169 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2170 final int height = page.getHeight();
2171 final int width = page.getWidth();
2172 page.close();
2173 pdfRenderer.close();
2174 return scalePdfDimensions(new Dimensions(height, width));
2175 } catch (final IOException | SecurityException e) {
2176 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2177 return new Dimensions(0, 0);
2178 }
2179 }
2180
2181 private Dimensions scalePdfDimensions(Dimensions in) {
2182 final DisplayMetrics displayMetrics =
2183 mXmppConnectionService.getResources().getDisplayMetrics();
2184 final int target = (int) (displayMetrics.density * 288);
2185 return scalePdfDimensions(in, target, true);
2186 }
2187
2188 private static Dimensions scalePdfDimensions(
2189 final Dimensions in, final int target, final boolean fit) {
2190 final int w, h;
2191 if (fit == (in.width <= in.height)) {
2192 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2193 h = target;
2194 } else {
2195 w = target;
2196 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2197 }
2198 return new Dimensions(h, w);
2199 }
2200
2201 public Drawable getAvatar(String avatar, int size) {
2202 if (avatar == null) {
2203 return null;
2204 }
2205
2206 if (android.os.Build.VERSION.SDK_INT >= 28) {
2207 try {
2208 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2209 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2210 int w = info.getSize().getWidth();
2211 int h = info.getSize().getHeight();
2212 Rect r = rectForSize(w, h, size);
2213 decoder.setTargetSize(r.width(), r.height());
2214
2215 int newSize = Math.min(r.width(), r.height());
2216 int left = (r.width() - newSize) / 2;
2217 int top = (r.height() - newSize) / 2;
2218 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2219 });
2220 } catch (final IOException e) {
2221 return getSVGSquare(getAvatarUri(avatar), size);
2222 }
2223 } else {
2224 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2225 return bm == null ? null : new BitmapDrawable(bm);
2226 }
2227 }
2228
2229 public Drawable getSVGSquare(Uri uri, int size) {
2230 try {
2231 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2232 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2233
2234 float w = svg.getDocumentWidth();
2235 float h = svg.getDocumentHeight();
2236 float scale = Math.max((float) size / h, (float) size / w);
2237 float outWidth = scale * w;
2238 float outHeight = scale * h;
2239 float left = (size - outWidth) / 2;
2240 float top = (size - outHeight) / 2;
2241 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2242 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2243 svg.setDocumentWidth("100%");
2244 svg.setDocumentHeight("100%");
2245
2246 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2247 Canvas canvas = new Canvas(output);
2248 svg.renderToCanvas(canvas, target);
2249
2250 return new SVGDrawable(output);
2251 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2252 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2253 return null;
2254 }
2255 }
2256
2257 public Drawable getSVG(File file, int size) {
2258 try {
2259 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2260 return drawSVG(svg, size);
2261 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2262 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2263 return null;
2264 }
2265 }
2266
2267 public Drawable drawSVG(SVG svg, int size) {
2268 try {
2269 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2270
2271 float w = svg.getDocumentWidth();
2272 float h = svg.getDocumentHeight();
2273 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2274 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2275 svg.setDocumentWidth("100%");
2276 svg.setDocumentHeight("100%");
2277
2278 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2279 Canvas canvas = new Canvas(output);
2280 svg.renderToCanvas(canvas);
2281
2282 return new SVGDrawable(output);
2283 } catch (final SVGParseException e) {
2284 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2285 return null;
2286 }
2287 }
2288
2289 private static class Dimensions {
2290 public final int width;
2291 public final int height;
2292
2293 Dimensions(int height, int width) {
2294 this.width = width;
2295 this.height = height;
2296 }
2297
2298 public int getMin() {
2299 return Math.min(width, height);
2300 }
2301
2302 public boolean valid() {
2303 return width > 0 && height > 0;
2304 }
2305 }
2306
2307 private static class NotAVideoFile extends Exception {
2308 public NotAVideoFile(Throwable t) {
2309 super(t);
2310 }
2311
2312 public NotAVideoFile() {
2313 super();
2314 }
2315 }
2316
2317 public static class ImageCompressionException extends Exception {
2318
2319 ImageCompressionException(String message) {
2320 super(message);
2321 }
2322 }
2323
2324 public static class FileCopyException extends Exception {
2325 private final int resId;
2326
2327 private FileCopyException(@StringRes int resId) {
2328 this.resId = resId;
2329 }
2330
2331 public @StringRes int getResId() {
2332 return resId;
2333 }
2334 }
2335
2336 public static class SVGDrawable extends BitmapDrawable {
2337 public SVGDrawable(Bitmap bm) { super(bm); }
2338 }
2339}