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