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 if (sizeIndex < 0) return 0;
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 IllegalArgumentException e) {
754 throw new FileCopyException(R.string.error_file_not_found);
755 } catch (final FileNotFoundException e) {
756 throw new FileCopyException(R.string.error_file_not_found);
757 } catch (final FileWriterException e) {
758 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
759 } catch (final SecurityException | IllegalStateException e) {
760 throw new FileCopyException(R.string.error_security_exception);
761 } catch (final IOException e) {
762 throw new FileCopyException(R.string.error_io_exception);
763 }
764 }
765
766 private InputStream openInputStream(Uri uri) throws IOException {
767 if (uri != null && "data".equals(uri.getScheme())) {
768 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
769 byte[] data;
770 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
771 String[] parts2 = parts[0].split(";", 2);
772 parts[0] = parts2[0];
773 data = Base64.decode(parts[1], 0);
774 } else {
775 try {
776 data = parts[1].getBytes("UTF-8");
777 } catch (final IOException e) {
778 data = new byte[0];
779 }
780 }
781 return new ByteArrayInputStream(data);
782 }
783 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
784 if (is == null) throw new FileNotFoundException("File not found");
785 return is;
786 }
787
788 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
789 final var parentDirectory = file.getParentFile();
790 if (parentDirectory != null && parentDirectory.mkdirs()) {
791 Log.d(Config.LOGTAG,"created directory "+parentDirectory.getAbsolutePath());
792 }
793 try {
794 if (!file.createNewFile() && file.length() > 0) {
795 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
796 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
797 }
798 } catch (final IOException e) {
799 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
800 }
801 try (final OutputStream os = new FileOutputStream(file);
802 final InputStream is = openInputStream(uri)) {
803 if (is == null) {
804 throw new FileCopyException(R.string.error_file_not_found);
805 }
806 try {
807 ByteStreams.copy(is, os);
808 } catch (final IOException e) {
809 throw new FileWriterException(file);
810 }
811 try {
812 os.flush();
813 } catch (final IOException e) {
814 throw new FileWriterException(file);
815 }
816 } catch (final FileNotFoundException e) {
817 cleanup(file);
818 throw new FileCopyException(R.string.error_file_not_found);
819 } catch (final FileWriterException e) {
820 cleanup(file);
821 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
822 } catch (final SecurityException | IllegalStateException | IllegalArgumentException e) {
823 cleanup(file);
824 throw new FileCopyException(R.string.error_security_exception);
825 } catch (final IOException e) {
826 cleanup(file);
827 throw new FileCopyException(R.string.error_io_exception);
828 }
829 }
830
831 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
832 throws FileCopyException {
833 final String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
834 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
835 String extension = MimeUtils.guessExtensionFromMimeType(mime);
836 if (extension == null) {
837 Log.d(Config.LOGTAG, "extension from mime type was null");
838 extension = getExtensionFromUri(uri);
839 }
840 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
841 extension = "oga";
842 }
843
844 try {
845 setupRelativeFilePath(message, uri, extension);
846 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
847 final String name = getDisplayNameFromUri(uri);
848 if (name != null) {
849 message.getFileParams().setName(name);
850 }
851 } catch (final XmppConnectionService.BlockedMediaException e) {
852 message.setRelativeFilePath(null);
853 message.setDeleted(true);
854 }
855 }
856
857 private String getDisplayNameFromUri(final Uri uri) {
858 final String[] projection = {OpenableColumns.DISPLAY_NAME};
859 String filename = null;
860 try (final Cursor cursor =
861 mXmppConnectionService
862 .getContentResolver()
863 .query(uri, projection, null, null, null)) {
864 if (cursor != null && cursor.moveToFirst()) {
865 filename = cursor.getString(0);
866 }
867 } catch (final Exception e) {
868 filename = null;
869 }
870 return filename;
871 }
872
873 private String getExtensionFromUri(final Uri uri) {
874 final String[] projection = {MediaStore.MediaColumns.DATA};
875 String filename = null;
876 try (final Cursor cursor =
877 mXmppConnectionService
878 .getContentResolver()
879 .query(uri, projection, null, null, null)) {
880 if (cursor != null && cursor.moveToFirst()) {
881 filename = cursor.getString(0);
882 }
883 } catch (final Exception e) {
884 filename = null;
885 }
886 if (filename == null) {
887 final List<String> segments = uri.getPathSegments();
888 if (segments.size() > 0) {
889 filename = segments.get(segments.size() - 1);
890 }
891 }
892 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
893 return pos > 0 ? filename.substring(pos + 1) : null;
894 }
895
896 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
897 throws FileCopyException, ImageCompressionException {
898 final File parent = file.getParentFile();
899 if (parent != null && parent.mkdirs()) {
900 Log.d(Config.LOGTAG, "created parent directory");
901 }
902 InputStream is = null;
903 OutputStream os = null;
904 try {
905 if (!file.exists() && !file.createNewFile()) {
906 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
907 }
908 is = mXmppConnectionService.getContentResolver().openInputStream(image);
909 if (is == null) {
910 throw new FileCopyException(R.string.error_not_an_image_file);
911 }
912 final Bitmap originalBitmap;
913 final BitmapFactory.Options options = new BitmapFactory.Options();
914 final int inSampleSize = (int) Math.pow(2, sampleSize);
915 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
916 options.inSampleSize = inSampleSize;
917 originalBitmap = BitmapFactory.decodeStream(is, null, options);
918 is.close();
919 if (originalBitmap == null) {
920 throw new ImageCompressionException("Source file was not an image");
921 }
922 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
923 originalBitmap.recycle();
924 throw new ImageCompressionException("Source file had alpha channel");
925 }
926 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
927 final int rotation = getRotation(image);
928 scaledBitmap = rotate(scaledBitmap, rotation);
929 boolean targetSizeReached = false;
930 int quality = Config.IMAGE_QUALITY;
931 final int imageMaxSize =
932 mXmppConnectionService
933 .getResources()
934 .getInteger(R.integer.auto_accept_filesize);
935 while (!targetSizeReached) {
936 os = new FileOutputStream(file);
937 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
938 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
939 if (!success) {
940 throw new FileCopyException(R.string.error_compressing_image);
941 }
942 os.flush();
943 final long fileSize = file.length();
944 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
945 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
946 quality -= 5;
947 }
948 scaledBitmap.recycle();
949 } catch (final FileNotFoundException e) {
950 cleanup(file);
951 throw new FileCopyException(R.string.error_file_not_found);
952 } catch (final IOException e) {
953 cleanup(file);
954 throw new FileCopyException(R.string.error_io_exception);
955 } catch (SecurityException e) {
956 cleanup(file);
957 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
958 } catch (final OutOfMemoryError e) {
959 ++sampleSize;
960 if (sampleSize <= 3) {
961 copyImageToPrivateStorage(file, image, sampleSize);
962 } else {
963 throw new FileCopyException(R.string.error_out_of_memory);
964 }
965 } finally {
966 close(os);
967 close(is);
968 }
969 }
970
971 private static void cleanup(final File file) {
972 try {
973 file.delete();
974 } catch (Exception e) {
975
976 }
977 }
978
979 public void copyImageToPrivateStorage(File file, Uri image)
980 throws FileCopyException, ImageCompressionException {
981 Log.d(
982 Config.LOGTAG,
983 "copy image ("
984 + image.toString()
985 + ") to private storage "
986 + file.getAbsolutePath());
987 copyImageToPrivateStorage(file, image, 0);
988 }
989
990 public void copyImageToPrivateStorage(Message message, Uri image)
991 throws FileCopyException, ImageCompressionException {
992 final String filename;
993 switch (Config.IMAGE_FORMAT) {
994 case JPEG:
995 filename = String.format("%s.%s", message.getUuid(), "jpg");
996 break;
997 case PNG:
998 filename = String.format("%s.%s", message.getUuid(), "png");
999 break;
1000 case WEBP:
1001 filename = String.format("%s.%s", message.getUuid(), "webp");
1002 break;
1003 default:
1004 throw new IllegalStateException("Unknown image format");
1005 }
1006 setupRelativeFilePath(message, filename);
1007 final File tmp = getFile(message);
1008 copyImageToPrivateStorage(tmp, image);
1009 final String extension = MimeUtils.extractRelevantExtension(filename);
1010 try {
1011 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
1012 } catch (final FileNotFoundException e) {
1013 throw new FileCopyException(R.string.error_file_not_found);
1014 } catch (final IOException e) {
1015 throw new FileCopyException(R.string.error_io_exception);
1016 } catch (final XmppConnectionService.BlockedMediaException e) {
1017 tmp.delete();
1018 message.setRelativeFilePath(null);
1019 message.setDeleted(true);
1020 return;
1021 }
1022 tmp.renameTo(getFile(message));
1023 updateFileParams(message, null, false);
1024 }
1025
1026 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1027 try {
1028 setupRelativeFilePath(message, openInputStream(uri), extension);
1029 } catch (final FileNotFoundException e) {
1030 throw new FileCopyException(R.string.error_file_not_found);
1031 } catch (final IOException e) {
1032 throw new FileCopyException(R.string.error_io_exception);
1033 }
1034 }
1035
1036 public Cid[] calculateCids(final Uri uri) throws IOException {
1037 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1038 }
1039
1040 public Cid[] calculateCids(final InputStream is) throws IOException {
1041 try {
1042 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1043 } catch (final NoSuchAlgorithmException e) {
1044 throw new AssertionError(e);
1045 }
1046 }
1047
1048 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1049 message.setRelativeFilePath(getStorageLocation(message, is, extension).getAbsolutePath());
1050 }
1051
1052 public void setupRelativeFilePath(final Message message, final String filename) {
1053 final String extension = MimeUtils.extractRelevantExtension(filename);
1054 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1055 setupRelativeFilePath(message, filename, mime);
1056 }
1057
1058 public File getStorageLocation(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1059 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1060 Cid[] cids = calculateCids(is);
1061 String base = cids[0].toString();
1062
1063 File file = null;
1064 while (file == null || (file.exists() && !file.canRead())) {
1065 file = getStorageLocation(message, String.format("%s.%s", base, extension), mime);
1066 base += "_";
1067 }
1068 for (int i = 0; i < cids.length; i++) {
1069 mXmppConnectionService.saveCid(cids[i], file);
1070 }
1071 return file;
1072 }
1073
1074 public File getStorageLocation(final Message message, final String filename, final String mime) {
1075 final File parentDirectory;
1076 if (Strings.isNullOrEmpty(mime)) {
1077 parentDirectory =
1078 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1079 } else if (mime.startsWith("image/")) {
1080 parentDirectory =
1081 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1082 } else if (mime.startsWith("video/")) {
1083 parentDirectory =
1084 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1085 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1086 parentDirectory =
1087 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1088 } else {
1089 parentDirectory =
1090 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1091 }
1092 final File appDirectory =
1093 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1094 if (message == null || message.getStatus() == Message.STATUS_DUMMY || (message.getConversation() instanceof Conversation && ((Conversation) message.getConversation()).storeInCache())) {
1095 final var mediaCache = new File(mXmppConnectionService.getCacheDir(), "/media");
1096 return new File(mediaCache, filename);
1097 } else {
1098 return new File(appDirectory, filename);
1099 }
1100 }
1101
1102 public static boolean inConversationsDirectory(final Context context, String path) {
1103 final File fileDirectory = new File(path).getParentFile();
1104 for (final String type : STORAGE_TYPES) {
1105 final File typeDirectory =
1106 new File(
1107 Environment.getExternalStoragePublicDirectory(type),
1108 context.getString(R.string.app_name));
1109 if (typeDirectory.equals(fileDirectory)) {
1110 return true;
1111 }
1112 }
1113 return false;
1114 }
1115
1116 public void setupRelativeFilePath(
1117 final Message message, final String filename, final String mime) {
1118 final File file = getStorageLocation(message, filename, mime);
1119 message.setRelativeFilePath(file.getAbsolutePath());
1120 }
1121
1122 public boolean unusualBounds(final Uri image) {
1123 try {
1124 final BitmapFactory.Options options = new BitmapFactory.Options();
1125 options.inJustDecodeBounds = true;
1126 final InputStream inputStream =
1127 mXmppConnectionService.getContentResolver().openInputStream(image);
1128 BitmapFactory.decodeStream(inputStream, null, options);
1129 close(inputStream);
1130 float ratio = (float) options.outHeight / options.outWidth;
1131 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1132 } catch (final Exception e) {
1133 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1134 return false;
1135 }
1136 }
1137
1138 private int getRotation(final File file) {
1139 try (final InputStream inputStream = new FileInputStream(file)) {
1140 return getRotation(inputStream);
1141 } catch (Exception e) {
1142 return 0;
1143 }
1144 }
1145
1146 private int getRotation(final Uri image) {
1147 try (final InputStream is =
1148 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1149 return is == null ? 0 : getRotation(is);
1150 } catch (final Exception e) {
1151 return 0;
1152 }
1153 }
1154
1155 private static int getRotation(final InputStream inputStream) throws IOException {
1156 final ExifInterface exif = new ExifInterface(inputStream);
1157 final int orientation =
1158 exif.getAttributeInt(
1159 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1160 switch (orientation) {
1161 case ExifInterface.ORIENTATION_ROTATE_180:
1162 return 180;
1163 case ExifInterface.ORIENTATION_ROTATE_90:
1164 return 90;
1165 case ExifInterface.ORIENTATION_ROTATE_270:
1166 return 270;
1167 default:
1168 return 0;
1169 }
1170 }
1171
1172 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1173 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1174 if (thumbs != null && !thumbs.isEmpty()) {
1175 for (final var thumb : thumbs) {
1176 final var uriS = thumb.getAttribute("uri");
1177 if (uriS == null) continue;
1178 Uri uri = Uri.parse(uriS);
1179 if (uri.getScheme().equals("data")) {
1180 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1181
1182 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1183 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1184 if (cached != null || cacheOnly) return cached;
1185
1186 byte[] data;
1187 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1188 String[] parts2 = parts[0].split(";", 2);
1189 parts[0] = parts2[0];
1190 data = Base64.decode(parts[1], 0);
1191 } else {
1192 try {
1193 data = parts[1].getBytes("UTF-8");
1194 } catch (final IOException e) {
1195 data = new byte[0];
1196 }
1197 }
1198
1199 if (parts[0].equals("image/blurhash")) {
1200 int width = message.getFileParams().width;
1201 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1202 if (width < 1) width = 1920;
1203
1204 int height = message.getFileParams().height;
1205 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1206 if (height < 1) height = 1080;
1207 Rect r = rectForSize(width, height, size);
1208
1209 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1210 if (blurhash != null) {
1211 cached = new BitmapDrawable(blurhash);
1212 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1213 return cached;
1214 }
1215 } else if (parts[0].equals("image/thumbhash")) {
1216 ThumbHash.Image image;
1217 try {
1218 image = ThumbHash.thumbHashToRGBA(data);
1219 } catch (final Exception e) {
1220 continue;
1221 }
1222 int[] pixels = new int[image.width * image.height];
1223 for (int i = 0; i < pixels.length; i++) {
1224 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);
1225 }
1226 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1227 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1228 return cached;
1229 }
1230 }
1231 }
1232 }
1233
1234 return null;
1235 }
1236
1237 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1238 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1239 DownloadableFile file = getFile(message);
1240 Drawable thumbnail = cache.get(file.getAbsolutePath());
1241 if (thumbnail != null) return thumbnail;
1242
1243 if ((thumbnail == null) && (!cacheOnly)) {
1244 synchronized (THUMBNAIL_LOCK) {
1245 final var thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1246 if (thumbs != null && !thumbs.isEmpty()) {
1247 for (final var thumb : thumbs) {
1248 final var uriS = thumb.getAttribute("uri");
1249 if (uriS == null) continue;
1250 Uri uri = Uri.parse(uriS);
1251 if (uri.getScheme().equals("data")) {
1252 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1253 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1254
1255 byte[] data;
1256 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1257 String[] parts2 = parts[0].split(";", 2);
1258 parts[0] = parts2[0];
1259 data = Base64.decode(parts[1], 0);
1260 } else {
1261 data = parts[1].getBytes("UTF-8");
1262 }
1263
1264 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1265 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1266
1267 if (android.os.Build.VERSION.SDK_INT >= 28) {
1268 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1269 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1270 int w = info.getSize().getWidth();
1271 int h = info.getSize().getHeight();
1272 Rect r = rectForSize(w, h, size);
1273 decoder.setTargetSize(r.width(), r.height());
1274 });
1275 }
1276
1277 if (thumbnail != null && file.getAbsolutePath() != null) {
1278 cache.put(file.getAbsolutePath(), thumbnail);
1279 return thumbnail;
1280 }
1281 } else if (uri.getScheme().equals("cid")) {
1282 Cid cid = BobTransfer.cid(uri);
1283 if (cid == null) continue;
1284 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1285 if (f != null && f.canRead()) {
1286 return getThumbnail(f, res, size, cacheOnly);
1287 }
1288 }
1289 }
1290 }
1291 }
1292 }
1293
1294 return getThumbnail(file, res, size, cacheOnly);
1295 }
1296
1297 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1298 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1299 }
1300
1301 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1302 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1303 Drawable thumbnail = cache.get(cacheKey);
1304 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1305 synchronized (THUMBNAIL_LOCK) {
1306 thumbnail = cache.get(cacheKey);
1307 if (thumbnail != null) {
1308 return thumbnail;
1309 }
1310 final String mime = file.getMimeType();
1311 if ("image/svg+xml".equals(mime)) {
1312 thumbnail = getSVG(file, size);
1313 } else if ("application/pdf".equals(mime)) {
1314 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1315 } else if (mime.startsWith("video/")) {
1316 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1317 } else if (mime.startsWith("audio/")) {
1318 thumbnail = res.getDrawable(R.drawable.audio_file_24dp);
1319 } else {
1320 thumbnail = getImagePreview(file, res, size, mime);
1321 if (thumbnail == null) {
1322 throw new FileNotFoundException();
1323 }
1324 }
1325 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1326 }
1327 }
1328 return thumbnail;
1329 }
1330
1331 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1332 final Drawable drawable = getThumbnail(message, res, size, false);
1333 if (drawable == null) return null;
1334 return drawDrawable(drawable);
1335 }
1336
1337 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1338 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1339 if (drawable == null) return null;
1340 return drawDrawable(drawable);
1341 }
1342
1343 public static Rect rectForSize(int w, int h, int size) {
1344 int scalledW;
1345 int scalledH;
1346 if (w <= h) {
1347 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1348 scalledH = size;
1349 } else {
1350 scalledW = size;
1351 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1352 }
1353
1354 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1355
1356 return new Rect(0, 0, scalledW, scalledH);
1357 }
1358
1359 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1360 if (android.os.Build.VERSION.SDK_INT >= 28) {
1361 ImageDecoder.Source source = ImageDecoder.createSource(file);
1362 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1363 int w = info.getSize().getWidth();
1364 int h = info.getSize().getHeight();
1365 Rect r = rectForSize(w, h, size);
1366 decoder.setTargetSize(r.width(), r.height());
1367 });
1368 } else {
1369 BitmapFactory.Options options = new BitmapFactory.Options();
1370 options.inSampleSize = calcSampleSize(file, size);
1371 Bitmap bitmap = null;
1372 try {
1373 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1374 } catch (OutOfMemoryError e) {
1375 options.inSampleSize *= 2;
1376 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1377 }
1378 if (bitmap == null) return null;
1379
1380 bitmap = resize(bitmap, size);
1381 bitmap = rotate(bitmap, getRotation(file));
1382 if (mime.equals("image/gif")) {
1383 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1384 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1385 bitmap.recycle();
1386 bitmap = withGifOverlay;
1387 }
1388 return new BitmapDrawable(res, bitmap);
1389 }
1390 }
1391
1392 public static Bitmap drawDrawable(Drawable drawable) {
1393 if (drawable == null) return null;
1394
1395 Bitmap bitmap = null;
1396
1397 if (drawable instanceof BitmapDrawable) {
1398 bitmap = ((BitmapDrawable) drawable).getBitmap();
1399 if (bitmap != null) return bitmap;
1400 }
1401
1402 Rect bounds = drawable.getBounds();
1403 int width = drawable.getIntrinsicWidth();
1404 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1405 int height = drawable.getIntrinsicHeight();
1406 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1407
1408 if (width < 1) {
1409 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1410 width = 48;
1411 }
1412 if (height < 1) {
1413 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1414 height = 48;
1415 }
1416
1417 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1418 Canvas canvas = new Canvas(bitmap);
1419 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1420 drawable.draw(canvas);
1421 return bitmap;
1422 }
1423
1424 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1425 Bitmap overlay =
1426 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1427 Canvas canvas = new Canvas(bitmap);
1428 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1429 Log.d(
1430 Config.LOGTAG,
1431 "target size overlay: "
1432 + targetSize
1433 + " overlay bitmap size was "
1434 + overlay.getHeight());
1435 float left = (canvas.getWidth() - targetSize) / 2.0f;
1436 float top = (canvas.getHeight() - targetSize) / 2.0f;
1437 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1438 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1439 }
1440
1441 /** https://stackoverflow.com/a/3943023/210897 */
1442 private boolean paintOverlayBlack(final Bitmap bitmap) {
1443 final int h = bitmap.getHeight();
1444 final int w = bitmap.getWidth();
1445 int record = 0;
1446 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1447 for (int x = Math.round(w * IGNORE_PADDING);
1448 x < w - Math.round(w * IGNORE_PADDING);
1449 ++x) {
1450 int pixel = bitmap.getPixel(x, y);
1451 if ((Color.red(pixel) * 0.299
1452 + Color.green(pixel) * 0.587
1453 + Color.blue(pixel) * 0.114)
1454 > 186) {
1455 --record;
1456 } else {
1457 ++record;
1458 }
1459 }
1460 }
1461 return record < 0;
1462 }
1463
1464 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1465 final int h = bitmap.getHeight();
1466 final int w = bitmap.getWidth();
1467 int white = 0;
1468 for (int y = 0; y < h; ++y) {
1469 for (int x = 0; x < w; ++x) {
1470 int pixel = bitmap.getPixel(x, y);
1471 if ((Color.red(pixel) * 0.299
1472 + Color.green(pixel) * 0.587
1473 + Color.blue(pixel) * 0.114)
1474 > 186) {
1475 white++;
1476 }
1477 }
1478 }
1479 return white > (h * w * 0.4f);
1480 }
1481
1482 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1483 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1484 Bitmap frame;
1485 try {
1486 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1487 frame = metadataRetriever.getFrameAtTime(0);
1488 metadataRetriever.release();
1489 return cropCenterSquare(frame, size);
1490 } catch (Exception e) {
1491 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1492 frame.eraseColor(0xff000000);
1493 return frame;
1494 }
1495 }
1496
1497 private Bitmap getVideoPreview(final File file, final int size) {
1498 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1499 Bitmap frame;
1500 try {
1501 metadataRetriever.setDataSource(file.getAbsolutePath());
1502 frame = metadataRetriever.getFrameAtTime(0);
1503 metadataRetriever.release();
1504 frame = resize(frame, size);
1505 } catch (IOException | RuntimeException e) {
1506 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1507 frame.eraseColor(0xff000000);
1508 }
1509 drawOverlay(
1510 frame,
1511 paintOverlayBlack(frame)
1512 ? R.drawable.play_video_black
1513 : R.drawable.play_video_white,
1514 0.75f);
1515 return frame;
1516 }
1517
1518 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1519 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1520 try {
1521 final ParcelFileDescriptor fileDescriptor =
1522 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1523 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1524 drawOverlay(
1525 rendered,
1526 paintOverlayBlackPdf(rendered)
1527 ? R.drawable.open_pdf_black
1528 : R.drawable.open_pdf_white,
1529 0.75f);
1530 return rendered;
1531 } catch (final IOException | SecurityException e) {
1532 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1533 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1534 placeholder.eraseColor(0xff000000);
1535 return placeholder;
1536 }
1537 }
1538
1539 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1540 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1541 try {
1542 ParcelFileDescriptor fileDescriptor =
1543 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1544 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1545 return cropCenterSquare(bitmap, size);
1546 } catch (Exception e) {
1547 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1548 placeholder.eraseColor(0xff000000);
1549 return placeholder;
1550 }
1551 }
1552
1553 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1554 private Bitmap renderPdfDocument(
1555 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1556 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1557 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1558 final Dimensions dimensions =
1559 scalePdfDimensions(
1560 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1561 final Bitmap rendered =
1562 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1563 rendered.eraseColor(0xffffffff);
1564 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1565 page.close();
1566 pdfRenderer.close();
1567 fileDescriptor.close();
1568 return rendered;
1569 }
1570
1571 public Uri getTakePhotoUri() {
1572 final String filename =
1573 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1574 final File directory;
1575 if (Config.ONLY_INTERNAL_STORAGE) {
1576 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1577 } else {
1578 directory =
1579 new File(
1580 Environment.getExternalStoragePublicDirectory(
1581 Environment.DIRECTORY_DCIM),
1582 "Camera");
1583 }
1584 final File file = new File(directory, filename);
1585 file.getParentFile().mkdirs();
1586 return getUriForFile(mXmppConnectionService, file);
1587 }
1588
1589 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1590
1591 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1592 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1593 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1594 return uncompressAvatar.first;
1595 }
1596 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1597 Log.d(
1598 Config.LOGTAG,
1599 "uncompressed avatar exceeded char limit by "
1600 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1601 }
1602
1603 Bitmap bm = cropCenterSquare(image, size);
1604 if (bm == null) {
1605 return null;
1606 }
1607 if (hasAlpha(bm)) {
1608 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1609 bm.recycle();
1610 bm = cropCenterSquare(image, 96);
1611 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1612 }
1613 return getPepAvatar(bm, format, 100);
1614 }
1615
1616 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1617 try {
1618 if (android.os.Build.VERSION.SDK_INT >= 28) {
1619 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1620 int[] size = new int[] { 0, 0 };
1621 boolean[] animated = new boolean[] { false };
1622 String[] mimeType = new String[] { null };
1623 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1624 mimeType[0] = info.getMimeType();
1625 animated[0] = info.isAnimated();
1626 size[0] = info.getSize().getWidth();
1627 size[1] = info.getSize().getHeight();
1628 });
1629
1630 if (animated[0]) {
1631 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1632 if (avatar != null) return new Pair(avatar, true);
1633 }
1634
1635 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1636 } else {
1637 Bitmap bitmap =
1638 BitmapFactory.decodeStream(
1639 mXmppConnectionService.getContentResolver().openInputStream(uri));
1640 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1641 }
1642 } catch (Exception e) {
1643 try {
1644 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1645 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1646 } catch (Exception e2) {
1647 return null;
1648 }
1649 }
1650 }
1651
1652 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1653 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1654 if (fd.getLength() > 100000) return null; // Too big to use raw file
1655
1656 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1657 Base64OutputStream mBase64OutputStream =
1658 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1659 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1660 DigestOutputStream mDigestOutputStream =
1661 new DigestOutputStream(mBase64OutputStream, digest);
1662
1663 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1664 mDigestOutputStream.flush();
1665 mDigestOutputStream.close();
1666
1667 final Avatar avatar = new Avatar();
1668 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1669 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1670 avatar.type = mimeType;
1671 avatar.width = width;
1672 avatar.height = height;
1673 return avatar;
1674 }
1675
1676 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1677 try {
1678 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1679 Base64OutputStream mBase64OutputStream =
1680 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1681 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1682 DigestOutputStream mDigestOutputStream =
1683 new DigestOutputStream(mBase64OutputStream, digest);
1684 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1685 return null;
1686 }
1687 mDigestOutputStream.flush();
1688 mDigestOutputStream.close();
1689 long chars = mByteArrayOutputStream.size();
1690 if (format != Bitmap.CompressFormat.PNG
1691 && quality >= 50
1692 && chars >= Config.AVATAR_CHAR_LIMIT) {
1693 int q = quality - 2;
1694 Log.d(
1695 Config.LOGTAG,
1696 "avatar char length was " + chars + " reducing quality to " + q);
1697 return getPepAvatar(bitmap, format, q);
1698 }
1699 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1700 final Avatar avatar = new Avatar();
1701 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1702 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1703 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1704 avatar.type = "image/webp";
1705 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1706 avatar.type = "image/jpeg";
1707 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1708 avatar.type = "image/png";
1709 }
1710 avatar.width = bitmap.getWidth();
1711 avatar.height = bitmap.getHeight();
1712 return avatar;
1713 } catch (OutOfMemoryError e) {
1714 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1715 return null;
1716 } catch (Exception e) {
1717 return null;
1718 }
1719 }
1720
1721 public Avatar getStoredPepAvatar(String hash) {
1722 if (hash == null) {
1723 return null;
1724 }
1725 Avatar avatar = new Avatar();
1726 final File file = getAvatarFile(hash);
1727 FileInputStream is = null;
1728 try {
1729 avatar.size = file.length();
1730 BitmapFactory.Options options = new BitmapFactory.Options();
1731 options.inJustDecodeBounds = true;
1732 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1733 is = new FileInputStream(file);
1734 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1735 Base64OutputStream mBase64OutputStream =
1736 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1737 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1738 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1739 byte[] buffer = new byte[4096];
1740 int length;
1741 while ((length = is.read(buffer)) > 0) {
1742 os.write(buffer, 0, length);
1743 }
1744 os.flush();
1745 os.close();
1746 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1747 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1748 avatar.height = options.outHeight;
1749 avatar.width = options.outWidth;
1750 avatar.type = options.outMimeType;
1751 return avatar;
1752 } catch (NoSuchAlgorithmException | IOException e) {
1753 return null;
1754 } finally {
1755 close(is);
1756 }
1757 }
1758
1759 public boolean isAvatarCached(Avatar avatar) {
1760 final File file = getAvatarFile(avatar.getFilename());
1761 return file.exists();
1762 }
1763
1764 public boolean save(final Avatar avatar) {
1765 File file;
1766 if (isAvatarCached(avatar)) {
1767 file = getAvatarFile(avatar.getFilename());
1768 avatar.size = file.length();
1769 } else {
1770 file =
1771 new File(
1772 mXmppConnectionService.getCacheDir().getAbsolutePath()
1773 + "/"
1774 + UUID.randomUUID().toString());
1775 if (file.getParentFile().mkdirs()) {
1776 Log.d(Config.LOGTAG, "created cache directory");
1777 }
1778 OutputStream os = null;
1779 try {
1780 if (!file.createNewFile()) {
1781 Log.d(
1782 Config.LOGTAG,
1783 "unable to create temporary file " + file.getAbsolutePath());
1784 }
1785 os = new FileOutputStream(file);
1786 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1787 digest.reset();
1788 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1789 final byte[] bytes = avatar.getImageAsBytes();
1790 mDigestOutputStream.write(bytes);
1791 mDigestOutputStream.flush();
1792 mDigestOutputStream.close();
1793 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1794 if (sha1sum.equals(avatar.sha1sum)) {
1795 final File outputFile = getAvatarFile(avatar.getFilename());
1796 if (outputFile.getParentFile().mkdirs()) {
1797 Log.d(Config.LOGTAG, "created avatar directory");
1798 }
1799 final File avatarFile = getAvatarFile(avatar.getFilename());
1800 if (!file.renameTo(avatarFile)) {
1801 Log.d(
1802 Config.LOGTAG,
1803 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1804 return false;
1805 }
1806 } else {
1807 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1808 if (!file.delete()) {
1809 Log.d(Config.LOGTAG, "unable to delete temporary file");
1810 }
1811 return false;
1812 }
1813 avatar.size = bytes.length;
1814 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1815 return false;
1816 } finally {
1817 close(os);
1818 }
1819 }
1820 return true;
1821 }
1822
1823 public void deleteHistoricAvatarPath() {
1824 delete(getHistoricAvatarPath());
1825 }
1826
1827 private void delete(final File file) {
1828 if (file.isDirectory()) {
1829 final File[] files = file.listFiles();
1830 if (files != null) {
1831 for (final File f : files) {
1832 delete(f);
1833 }
1834 }
1835 }
1836 if (file.delete()) {
1837 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1838 }
1839 }
1840
1841 private File getHistoricAvatarPath() {
1842 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1843 }
1844
1845 public File getAvatarFile(String avatar) {
1846 final var f = new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1847 if (Build.VERSION.SDK_INT < 26) return f; // Doesn't support file.toPath
1848 try {
1849 if (f.exists()) java.nio.file.Files.setAttribute(f.toPath(), "lastAccessTime", java.nio.file.attribute.FileTime.fromMillis(System.currentTimeMillis()));
1850 } catch (final IOException e) {
1851 Log.w(Config.LOGTAG, "unable to set lastAccessTime for " + f);
1852 }
1853 return f;
1854 }
1855
1856 public Uri getAvatarUri(String avatar) {
1857 return Uri.fromFile(getAvatarFile(avatar));
1858 }
1859
1860 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1861 if (android.os.Build.VERSION.SDK_INT >= 28) {
1862 try {
1863 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1864 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1865 int w = info.getSize().getWidth();
1866 int h = info.getSize().getHeight();
1867 Rect r = rectForSize(w, h, size);
1868 decoder.setTargetSize(r.width(), r.height());
1869
1870 int newSize = Math.min(r.width(), r.height());
1871 int left = (r.width() - newSize) / 2;
1872 int top = (r.height() - newSize) / 2;
1873 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1874 });
1875 } catch (final IOException e) {
1876 return getSVGSquare(image, size);
1877 }
1878 } else {
1879 Bitmap bitmap = cropCenterSquare(image, size);
1880 return bitmap == null ? null : new BitmapDrawable(bitmap);
1881 }
1882 }
1883
1884 public Bitmap cropCenterSquare(Uri image, int size) {
1885 if (image == null) {
1886 return null;
1887 }
1888 InputStream is = null;
1889 try {
1890 BitmapFactory.Options options = new BitmapFactory.Options();
1891 options.inSampleSize = calcSampleSize(image, size);
1892 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1893 if (is == null) {
1894 return null;
1895 }
1896 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1897 if (input == null) {
1898 return null;
1899 } else {
1900 input = rotate(input, getRotation(image));
1901 return cropCenterSquare(input, size);
1902 }
1903 } catch (FileNotFoundException | SecurityException e) {
1904 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1905 return null;
1906 } finally {
1907 close(is);
1908 }
1909 }
1910
1911 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1912 if (image == null) {
1913 return null;
1914 }
1915 InputStream is = null;
1916 try {
1917 BitmapFactory.Options options = new BitmapFactory.Options();
1918 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1919 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1920 if (is == null) {
1921 return null;
1922 }
1923 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1924 if (source == null) {
1925 return null;
1926 }
1927 int sourceWidth = source.getWidth();
1928 int sourceHeight = source.getHeight();
1929 float xScale = (float) newWidth / sourceWidth;
1930 float yScale = (float) newHeight / sourceHeight;
1931 float scale = Math.max(xScale, yScale);
1932 float scaledWidth = scale * sourceWidth;
1933 float scaledHeight = scale * sourceHeight;
1934 float left = (newWidth - scaledWidth) / 2;
1935 float top = (newHeight - scaledHeight) / 2;
1936
1937 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1938 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1939 Canvas canvas = new Canvas(dest);
1940 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1941 if (source.isRecycled()) {
1942 source.recycle();
1943 }
1944 return dest;
1945 } catch (SecurityException e) {
1946 return null; // android 6.0 with revoked permissions for example
1947 } catch (FileNotFoundException e) {
1948 return null;
1949 } finally {
1950 close(is);
1951 }
1952 }
1953
1954 public Bitmap cropCenterSquare(Bitmap input, int size) {
1955 int w = input.getWidth();
1956 int h = input.getHeight();
1957
1958 float scale = Math.max((float) size / h, (float) size / w);
1959
1960 float outWidth = scale * w;
1961 float outHeight = scale * h;
1962 float left = (size - outWidth) / 2;
1963 float top = (size - outHeight) / 2;
1964 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1965
1966 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1967 Canvas canvas = new Canvas(output);
1968 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1969 if (!input.isRecycled()) {
1970 input.recycle();
1971 }
1972 return output;
1973 }
1974
1975 private int calcSampleSize(Uri image, int size)
1976 throws FileNotFoundException, SecurityException {
1977 final BitmapFactory.Options options = new BitmapFactory.Options();
1978 options.inJustDecodeBounds = true;
1979 final InputStream inputStream =
1980 mXmppConnectionService.getContentResolver().openInputStream(image);
1981 BitmapFactory.decodeStream(inputStream, null, options);
1982 close(inputStream);
1983 return calcSampleSize(options, size);
1984 }
1985
1986 public void updateFileParams(Message message) {
1987 updateFileParams(message, null);
1988 }
1989
1990 public void updateFileParams(final Message message, final String url) {
1991 updateFileParams(message, url, true);
1992 }
1993
1994 public void updateFileParams(final Message message, String url, boolean updateCids) {
1995 final boolean encrypted =
1996 message.getEncryption() == Message.ENCRYPTION_PGP
1997 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1998 final DownloadableFile file = getFile(message);
1999 final String mime = file.getMimeType();
2000 final boolean privateMessage = message.isPrivateMessage();
2001 final boolean image =
2002 message.getType() == Message.TYPE_IMAGE
2003 || (mime != null && mime.startsWith("image/"));
2004 Message.FileParams fileParams = message.getFileParams();
2005 if (fileParams == null) fileParams = new Message.FileParams();
2006 Cid[] cids = new Cid[0];
2007 try {
2008 cids = calculateCids(new FileInputStream(file));
2009 fileParams.setCids(List.of(cids));
2010 } catch (final IOException | NoSuchAlgorithmException e) { }
2011 if (url == null) {
2012 for (Cid cid : cids) {
2013 url = mXmppConnectionService.getUrlForCid(cid);
2014 if (url != null) {
2015 fileParams.url = url;
2016 break;
2017 }
2018 }
2019 } else {
2020 fileParams.url = url;
2021 }
2022 if (fileParams.getName() == null) fileParams.setName(file.getName());
2023 fileParams.setMediaType(mime);
2024 if (encrypted && !file.exists()) {
2025 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
2026 final DownloadableFile encryptedFile = getFile(message, false);
2027 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
2028 } else {
2029 Log.d(Config.LOGTAG, "running updateFileParams");
2030 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
2031 final boolean video = mime != null && mime.startsWith("video/");
2032 final boolean audio = mime != null && mime.startsWith("audio/");
2033 final boolean pdf = "application/pdf".equals(mime);
2034 if (file.canRead()) fileParams.size = file.getSize();
2035 if (ambiguous) {
2036 try {
2037 final Dimensions dimensions = getVideoDimensions(file);
2038 if (dimensions.valid()) {
2039 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
2040 fileParams.width = dimensions.width;
2041 fileParams.height = dimensions.height;
2042 } else {
2043 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2044 fileParams.runtime = getMediaRuntime(file);
2045 }
2046 } catch (final IOException | NotAVideoFile e) {
2047 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2048 fileParams.runtime = getMediaRuntime(file);
2049 }
2050 } else if (image || video || pdf) {
2051 try {
2052 final Dimensions dimensions;
2053 if (video) {
2054 dimensions = getVideoDimensions(file);
2055 } else if (pdf) {
2056 dimensions = getPdfDocumentDimensions(file);
2057 } else if ("image/svg+xml".equals(mime)) {
2058 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2059 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2060 } else {
2061 dimensions = getImageDimensions(file);
2062 }
2063 if (dimensions.valid()) {
2064 fileParams.width = dimensions.width;
2065 fileParams.height = dimensions.height;
2066 }
2067 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2068 Log.d(
2069 Config.LOGTAG,
2070 "file with mime type " + file.getMimeType() + " was not a video file");
2071 // fall threw
2072 }
2073 } else if (audio) {
2074 fileParams.runtime = getMediaRuntime(file);
2075 }
2076 if ("application/webxdc+zip".equals(mime)) {
2077 try {
2078 final var zip = new ZipFile(file);
2079 final ZipEntry manifestEntry = zip == null ? null : zip.getEntry("manifest.toml");
2080 if (manifestEntry != null) {
2081 final var manifest = Toml.parse(zip.getInputStream(manifestEntry));
2082 if (manifest != null) {
2083 final var name = manifest.getString("name");
2084 if (name != null) fileParams.setName(name);
2085 }
2086 }
2087 } catch (final IOException e2) { }
2088 }
2089 try {
2090 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2091 if (thumb != null) {
2092 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2093 byte[] rgba = new byte[pixels.length * 4];
2094 try {
2095 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2096 } catch (final IllegalStateException e) {
2097 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2098 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2099 softThumb.recycle();
2100 }
2101 for (int i = 0; i < pixels.length; i++) {
2102 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2103 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2104 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2105 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2106 }
2107 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2108 }
2109 } catch (final IOException e) { }
2110 }
2111 message.setFileParams(fileParams);
2112 message.setDeleted(false);
2113 message.setType(
2114 privateMessage
2115 ? Message.TYPE_PRIVATE_FILE
2116 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2117
2118 if (updateCids) {
2119 try {
2120 for (int i = 0; i < cids.length; i++) {
2121 mXmppConnectionService.saveCid(cids[i], file);
2122 }
2123 } catch (XmppConnectionService.BlockedMediaException e) { }
2124 }
2125 }
2126
2127 private int getMediaRuntime(final File file) {
2128 try {
2129 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2130 mediaMetadataRetriever.setDataSource(file.toString());
2131 final String value =
2132 mediaMetadataRetriever.extractMetadata(
2133 MediaMetadataRetriever.METADATA_KEY_DURATION);
2134 if (Strings.isNullOrEmpty(value)) {
2135 return 0;
2136 }
2137 return Integer.parseInt(value);
2138 } catch (final Exception e) {
2139 return 0;
2140 }
2141 }
2142
2143 private Dimensions getImageDimensions(File file) {
2144 final BitmapFactory.Options options = new BitmapFactory.Options();
2145 options.inJustDecodeBounds = true;
2146 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2147 final int rotation = getRotation(file);
2148 final boolean rotated = rotation == 90 || rotation == 270;
2149 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2150 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2151 return new Dimensions(imageHeight, imageWidth);
2152 }
2153
2154 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2155 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2156 try {
2157 metadataRetriever.setDataSource(file.getAbsolutePath());
2158 } catch (RuntimeException e) {
2159 throw new NotAVideoFile(e);
2160 }
2161 return getVideoDimensions(metadataRetriever);
2162 }
2163
2164 private Dimensions getPdfDocumentDimensions(final File file) {
2165 final ParcelFileDescriptor fileDescriptor;
2166 try {
2167 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2168 if (fileDescriptor == null) {
2169 return new Dimensions(0, 0);
2170 }
2171 } catch (final FileNotFoundException e) {
2172 return new Dimensions(0, 0);
2173 }
2174 try {
2175 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2176 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2177 final int height = page.getHeight();
2178 final int width = page.getWidth();
2179 page.close();
2180 pdfRenderer.close();
2181 return scalePdfDimensions(new Dimensions(height, width));
2182 } catch (final IOException | SecurityException e) {
2183 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2184 return new Dimensions(0, 0);
2185 }
2186 }
2187
2188 private Dimensions scalePdfDimensions(Dimensions in) {
2189 final DisplayMetrics displayMetrics =
2190 mXmppConnectionService.getResources().getDisplayMetrics();
2191 final int target = (int) (displayMetrics.density * 288);
2192 return scalePdfDimensions(in, target, true);
2193 }
2194
2195 private static Dimensions scalePdfDimensions(
2196 final Dimensions in, final int target, final boolean fit) {
2197 final int w, h;
2198 if (fit == (in.width <= in.height)) {
2199 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2200 h = target;
2201 } else {
2202 w = target;
2203 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2204 }
2205 return new Dimensions(h, w);
2206 }
2207
2208 public Drawable getAvatar(String avatar, int size) {
2209 if (avatar == null) {
2210 return null;
2211 }
2212
2213 if (android.os.Build.VERSION.SDK_INT >= 28) {
2214 try {
2215 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2216 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2217 int w = info.getSize().getWidth();
2218 int h = info.getSize().getHeight();
2219 Rect r = rectForSize(w, h, size);
2220 decoder.setTargetSize(r.width(), r.height());
2221
2222 int newSize = Math.min(r.width(), r.height());
2223 int left = (r.width() - newSize) / 2;
2224 int top = (r.height() - newSize) / 2;
2225 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2226 });
2227 } catch (final IOException e) {
2228 return getSVGSquare(getAvatarUri(avatar), size);
2229 }
2230 } else {
2231 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2232 return bm == null ? null : new BitmapDrawable(bm);
2233 }
2234 }
2235
2236 public Drawable getSVGSquare(Uri uri, int size) {
2237 try {
2238 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2239 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2240
2241 float w = svg.getDocumentWidth();
2242 float h = svg.getDocumentHeight();
2243 float scale = Math.max((float) size / h, (float) size / w);
2244 float outWidth = scale * w;
2245 float outHeight = scale * h;
2246 float left = (size - outWidth) / 2;
2247 float top = (size - outHeight) / 2;
2248 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2249 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2250 svg.setDocumentWidth("100%");
2251 svg.setDocumentHeight("100%");
2252
2253 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2254 Canvas canvas = new Canvas(output);
2255 svg.renderToCanvas(canvas, target);
2256
2257 return new SVGDrawable(output);
2258 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2259 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2260 return null;
2261 }
2262 }
2263
2264 public Drawable getSVG(File file, int size) {
2265 try {
2266 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2267 return drawSVG(svg, size);
2268 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2269 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2270 return null;
2271 }
2272 }
2273
2274 public Drawable drawSVG(SVG svg, int size) {
2275 try {
2276 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2277
2278 float w = svg.getDocumentWidth();
2279 float h = svg.getDocumentHeight();
2280 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2281 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2282 svg.setDocumentWidth("100%");
2283 svg.setDocumentHeight("100%");
2284
2285 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2286 Canvas canvas = new Canvas(output);
2287 svg.renderToCanvas(canvas);
2288
2289 return new SVGDrawable(output);
2290 } catch (final SVGParseException e) {
2291 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2292 return null;
2293 }
2294 }
2295
2296 private static class Dimensions {
2297 public final int width;
2298 public final int height;
2299
2300 Dimensions(int height, int width) {
2301 this.width = width;
2302 this.height = height;
2303 }
2304
2305 public int getMin() {
2306 return Math.min(width, height);
2307 }
2308
2309 public boolean valid() {
2310 return width > 0 && height > 0;
2311 }
2312 }
2313
2314 private static class NotAVideoFile extends Exception {
2315 public NotAVideoFile(Throwable t) {
2316 super(t);
2317 }
2318
2319 public NotAVideoFile() {
2320 super();
2321 }
2322 }
2323
2324 public static class ImageCompressionException extends Exception {
2325
2326 ImageCompressionException(String message) {
2327 super(message);
2328 }
2329 }
2330
2331 public static class FileCopyException extends Exception {
2332 private final int resId;
2333
2334 private FileCopyException(@StringRes int resId) {
2335 this.resId = resId;
2336 }
2337
2338 public @StringRes int getResId() {
2339 return resId;
2340 }
2341 }
2342
2343 public static class SVGDrawable extends BitmapDrawable {
2344 public SVGDrawable(Bitmap bm) { super(bm); }
2345 }
2346}