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