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 return FileUtils.getPath(mXmppConnectionService, uri);
689 }
690
691 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
692 Log.d(
693 Config.LOGTAG,
694 "copy file (" + file + ") to " + df);
695 try (final InputStream is = new FileInputStream(file);
696 final OutputStream os =
697 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
698 if (is == null) {
699 throw new FileCopyException(R.string.error_file_not_found);
700 }
701 try {
702 ByteStreams.copy(is, os);
703 os.flush();
704 } catch (IOException e) {
705 throw new FileWriterException(file);
706 }
707 } catch (final FileNotFoundException e) {
708 throw new FileCopyException(R.string.error_file_not_found);
709 } catch (final FileWriterException e) {
710 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
711 } catch (final SecurityException | IllegalStateException e) {
712 throw new FileCopyException(R.string.error_security_exception);
713 } catch (final IOException e) {
714 throw new FileCopyException(R.string.error_io_exception);
715 }
716 }
717
718 private InputStream openInputStream(Uri uri) throws IOException {
719 if (uri != null && "data".equals(uri.getScheme())) {
720 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
721 byte[] data;
722 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
723 String[] parts2 = parts[0].split(";", 2);
724 parts[0] = parts2[0];
725 data = Base64.decode(parts[1], 0);
726 } else {
727 try {
728 data = parts[1].getBytes("UTF-8");
729 } catch (final IOException e) {
730 data = new byte[0];
731 }
732 }
733 return new ByteArrayInputStream(data);
734 }
735 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
736 if (is == null) throw new FileNotFoundException("File not found");
737 return is;
738 }
739
740 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
741 Log.d(
742 Config.LOGTAG,
743 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
744 file.getParentFile().mkdirs();
745 try {
746 if (!file.createNewFile() && file.length() > 0) {
747 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
748 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
749 }
750 } catch (IOException e) {
751 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
752 }
753 try (final OutputStream os = new FileOutputStream(file);
754 final InputStream is = openInputStream(uri)) {
755 if (is == null) {
756 throw new FileCopyException(R.string.error_file_not_found);
757 }
758 try {
759 ByteStreams.copy(is, os);
760 } catch (IOException e) {
761 throw new FileWriterException(file);
762 }
763 try {
764 os.flush();
765 } catch (IOException e) {
766 throw new FileWriterException(file);
767 }
768 } catch (final FileNotFoundException e) {
769 cleanup(file);
770 throw new FileCopyException(R.string.error_file_not_found);
771 } catch (final FileWriterException e) {
772 cleanup(file);
773 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
774 } catch (final SecurityException | IllegalStateException e) {
775 cleanup(file);
776 throw new FileCopyException(R.string.error_security_exception);
777 } catch (final IOException e) {
778 cleanup(file);
779 throw new FileCopyException(R.string.error_io_exception);
780 }
781 }
782
783 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
784 throws FileCopyException {
785 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
786 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
787 String extension = MimeUtils.guessExtensionFromMimeType(mime);
788 if (extension == null) {
789 Log.d(Config.LOGTAG, "extension from mime type was null");
790 extension = getExtensionFromUri(uri);
791 }
792 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
793 extension = "oga";
794 }
795
796 try {
797 setupRelativeFilePath(message, uri, extension);
798 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
799 final String name = getDisplayNameFromUri(uri);
800 if (name != null) {
801 message.getFileParams().setName(name);
802 }
803 } catch (final XmppConnectionService.BlockedMediaException e) {
804 message.setRelativeFilePath(null);
805 message.setDeleted(true);
806 }
807 }
808
809 private String getDisplayNameFromUri(final Uri uri) {
810 final String[] projection = {OpenableColumns.DISPLAY_NAME};
811 String filename = null;
812 try (final Cursor cursor =
813 mXmppConnectionService
814 .getContentResolver()
815 .query(uri, projection, null, null, null)) {
816 if (cursor != null && cursor.moveToFirst()) {
817 filename = cursor.getString(0);
818 }
819 } catch (final Exception e) {
820 filename = null;
821 }
822 return filename;
823 }
824
825 private String getExtensionFromUri(final Uri uri) {
826 final String[] projection = {MediaStore.MediaColumns.DATA};
827 String filename = null;
828 try (final Cursor cursor =
829 mXmppConnectionService
830 .getContentResolver()
831 .query(uri, projection, null, null, null)) {
832 if (cursor != null && cursor.moveToFirst()) {
833 filename = cursor.getString(0);
834 }
835 } catch (final Exception e) {
836 filename = null;
837 }
838 if (filename == null) {
839 final List<String> segments = uri.getPathSegments();
840 if (segments.size() > 0) {
841 filename = segments.get(segments.size() - 1);
842 }
843 }
844 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
845 return pos > 0 ? filename.substring(pos + 1) : null;
846 }
847
848 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
849 throws FileCopyException, ImageCompressionException {
850 final File parent = file.getParentFile();
851 if (parent != null && parent.mkdirs()) {
852 Log.d(Config.LOGTAG, "created parent directory");
853 }
854 InputStream is = null;
855 OutputStream os = null;
856 try {
857 if (!file.exists() && !file.createNewFile()) {
858 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
859 }
860 is = mXmppConnectionService.getContentResolver().openInputStream(image);
861 if (is == null) {
862 throw new FileCopyException(R.string.error_not_an_image_file);
863 }
864 final Bitmap originalBitmap;
865 final BitmapFactory.Options options = new BitmapFactory.Options();
866 final int inSampleSize = (int) Math.pow(2, sampleSize);
867 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
868 options.inSampleSize = inSampleSize;
869 originalBitmap = BitmapFactory.decodeStream(is, null, options);
870 is.close();
871 if (originalBitmap == null) {
872 throw new ImageCompressionException("Source file was not an image");
873 }
874 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
875 originalBitmap.recycle();
876 throw new ImageCompressionException("Source file had alpha channel");
877 }
878 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
879 final int rotation = getRotation(image);
880 scaledBitmap = rotate(scaledBitmap, rotation);
881 boolean targetSizeReached = false;
882 int quality = Config.IMAGE_QUALITY;
883 final int imageMaxSize =
884 mXmppConnectionService
885 .getResources()
886 .getInteger(R.integer.auto_accept_filesize);
887 while (!targetSizeReached) {
888 os = new FileOutputStream(file);
889 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
890 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
891 if (!success) {
892 throw new FileCopyException(R.string.error_compressing_image);
893 }
894 os.flush();
895 final long fileSize = file.length();
896 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
897 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
898 quality -= 5;
899 }
900 scaledBitmap.recycle();
901 } catch (final FileNotFoundException e) {
902 cleanup(file);
903 throw new FileCopyException(R.string.error_file_not_found);
904 } catch (final IOException e) {
905 cleanup(file);
906 throw new FileCopyException(R.string.error_io_exception);
907 } catch (SecurityException e) {
908 cleanup(file);
909 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
910 } catch (final OutOfMemoryError e) {
911 ++sampleSize;
912 if (sampleSize <= 3) {
913 copyImageToPrivateStorage(file, image, sampleSize);
914 } else {
915 throw new FileCopyException(R.string.error_out_of_memory);
916 }
917 } finally {
918 close(os);
919 close(is);
920 }
921 }
922
923 private static void cleanup(final File file) {
924 try {
925 file.delete();
926 } catch (Exception e) {
927
928 }
929 }
930
931 public void copyImageToPrivateStorage(File file, Uri image)
932 throws FileCopyException, ImageCompressionException {
933 Log.d(
934 Config.LOGTAG,
935 "copy image ("
936 + image.toString()
937 + ") to private storage "
938 + file.getAbsolutePath());
939 copyImageToPrivateStorage(file, image, 0);
940 }
941
942 public void copyImageToPrivateStorage(Message message, Uri image)
943 throws FileCopyException, ImageCompressionException {
944 final String filename;
945 switch (Config.IMAGE_FORMAT) {
946 case JPEG:
947 filename = String.format("%s.%s", message.getUuid(), "jpg");
948 break;
949 case PNG:
950 filename = String.format("%s.%s", message.getUuid(), "png");
951 break;
952 case WEBP:
953 filename = String.format("%s.%s", message.getUuid(), "webp");
954 break;
955 default:
956 throw new IllegalStateException("Unknown image format");
957 }
958 setupRelativeFilePath(message, filename);
959 final File tmp = getFile(message);
960 copyImageToPrivateStorage(tmp, image);
961 final String extension = MimeUtils.extractRelevantExtension(filename);
962 try {
963 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
964 } catch (final FileNotFoundException e) {
965 throw new FileCopyException(R.string.error_file_not_found);
966 } catch (final IOException e) {
967 throw new FileCopyException(R.string.error_io_exception);
968 } catch (final XmppConnectionService.BlockedMediaException e) {
969 tmp.delete();
970 message.setRelativeFilePath(null);
971 message.setDeleted(true);
972 return;
973 }
974 tmp.renameTo(getFile(message));
975 updateFileParams(message, null, false);
976 }
977
978 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
979 try {
980 setupRelativeFilePath(message, openInputStream(uri), extension);
981 } catch (final FileNotFoundException e) {
982 throw new FileCopyException(R.string.error_file_not_found);
983 } catch (final IOException e) {
984 throw new FileCopyException(R.string.error_io_exception);
985 }
986 }
987
988 public Cid[] calculateCids(final Uri uri) throws IOException {
989 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
990 }
991
992 public Cid[] calculateCids(final InputStream is) throws IOException {
993 try {
994 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
995 } catch (final NoSuchAlgorithmException e) {
996 throw new AssertionError(e);
997 }
998 }
999
1000 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1001 message.setRelativeFilePath(getStorageLocation(is, extension).getAbsolutePath());
1002 }
1003
1004 public void setupRelativeFilePath(final Message message, final String filename) {
1005 final String extension = MimeUtils.extractRelevantExtension(filename);
1006 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1007 setupRelativeFilePath(message, filename, mime);
1008 }
1009
1010 public File getStorageLocation(final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1011 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1012 Cid[] cids = calculateCids(is);
1013 String base = cids[0].toString();
1014
1015 File file = null;
1016 while (file == null || (file.exists() && !file.canRead())) {
1017 file = getStorageLocation(String.format("%s.%s", base, extension), mime);
1018 base += "_";
1019 }
1020 for (int i = 0; i < cids.length; i++) {
1021 mXmppConnectionService.saveCid(cids[i], file);
1022 }
1023 return file;
1024 }
1025
1026 public File getStorageLocation(final String filename, final String mime) {
1027 final File parentDirectory;
1028 if (Strings.isNullOrEmpty(mime)) {
1029 parentDirectory =
1030 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1031 } else if (mime.startsWith("image/")) {
1032 parentDirectory =
1033 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1034 } else if (mime.startsWith("video/")) {
1035 parentDirectory =
1036 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1037 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1038 parentDirectory =
1039 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1040 } else {
1041 parentDirectory =
1042 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1043 }
1044 final File appDirectory =
1045 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1046 return new File(appDirectory, filename);
1047 }
1048
1049 public static boolean inConversationsDirectory(final Context context, String path) {
1050 final File fileDirectory = new File(path).getParentFile();
1051 for (final String type : STORAGE_TYPES) {
1052 final File typeDirectory =
1053 new File(
1054 Environment.getExternalStoragePublicDirectory(type),
1055 context.getString(R.string.app_name));
1056 if (typeDirectory.equals(fileDirectory)) {
1057 return true;
1058 }
1059 }
1060 return false;
1061 }
1062
1063 public void setupRelativeFilePath(
1064 final Message message, final String filename, final String mime) {
1065 final File file = getStorageLocation(filename, mime);
1066 message.setRelativeFilePath(file.getAbsolutePath());
1067 }
1068
1069 public boolean unusualBounds(final Uri image) {
1070 try {
1071 final BitmapFactory.Options options = new BitmapFactory.Options();
1072 options.inJustDecodeBounds = true;
1073 final InputStream inputStream =
1074 mXmppConnectionService.getContentResolver().openInputStream(image);
1075 BitmapFactory.decodeStream(inputStream, null, options);
1076 close(inputStream);
1077 float ratio = (float) options.outHeight / options.outWidth;
1078 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1079 } catch (final Exception e) {
1080 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1081 return false;
1082 }
1083 }
1084
1085 private int getRotation(final File file) {
1086 try (final InputStream inputStream = new FileInputStream(file)) {
1087 return getRotation(inputStream);
1088 } catch (Exception e) {
1089 return 0;
1090 }
1091 }
1092
1093 private int getRotation(final Uri image) {
1094 try (final InputStream is =
1095 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1096 return is == null ? 0 : getRotation(is);
1097 } catch (final Exception e) {
1098 return 0;
1099 }
1100 }
1101
1102 private static int getRotation(final InputStream inputStream) throws IOException {
1103 final ExifInterface exif = new ExifInterface(inputStream);
1104 final int orientation =
1105 exif.getAttributeInt(
1106 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1107 switch (orientation) {
1108 case ExifInterface.ORIENTATION_ROTATE_180:
1109 return 180;
1110 case ExifInterface.ORIENTATION_ROTATE_90:
1111 return 90;
1112 case ExifInterface.ORIENTATION_ROTATE_270:
1113 return 270;
1114 default:
1115 return 0;
1116 }
1117 }
1118
1119 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1120 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1121 if (thumbs != null && !thumbs.isEmpty()) {
1122 for (Element thumb : thumbs) {
1123 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1124 if (uri.getScheme().equals("data")) {
1125 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1126
1127 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1128 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1129 if (cached != null || cacheOnly) return cached;
1130
1131 byte[] data;
1132 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1133 String[] parts2 = parts[0].split(";", 2);
1134 parts[0] = parts2[0];
1135 data = Base64.decode(parts[1], 0);
1136 } else {
1137 try {
1138 data = parts[1].getBytes("UTF-8");
1139 } catch (final IOException e) {
1140 data = new byte[0];
1141 }
1142 }
1143
1144 if (parts[0].equals("image/blurhash")) {
1145 int width = message.getFileParams().width;
1146 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1147 if (width < 1) width = 1920;
1148
1149 int height = message.getFileParams().height;
1150 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1151 if (height < 1) height = 1080;
1152 Rect r = rectForSize(width, height, size);
1153
1154 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1155 if (blurhash != null) {
1156 cached = new BitmapDrawable(blurhash);
1157 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1158 return cached;
1159 }
1160 } else if (parts[0].equals("image/thumbhash")) {
1161 ThumbHash.Image image;
1162 try {
1163 image = ThumbHash.thumbHashToRGBA(data);
1164 } catch (final Exception e) {
1165 continue;
1166 }
1167 int[] pixels = new int[image.width * image.height];
1168 for (int i = 0; i < pixels.length; i++) {
1169 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);
1170 }
1171 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1172 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1173 return cached;
1174 }
1175 }
1176 }
1177 }
1178
1179 return null;
1180 }
1181
1182 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1183 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1184 DownloadableFile file = getFile(message);
1185 Drawable thumbnail = cache.get(file.getAbsolutePath());
1186 if (thumbnail != null) return thumbnail;
1187
1188 if ((thumbnail == null) && (!cacheOnly)) {
1189 synchronized (THUMBNAIL_LOCK) {
1190 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1191 if (thumbs != null && !thumbs.isEmpty()) {
1192 for (Element thumb : thumbs) {
1193 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1194 if (uri.getScheme().equals("data")) {
1195 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1196 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1197
1198 byte[] data;
1199 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1200 String[] parts2 = parts[0].split(";", 2);
1201 parts[0] = parts2[0];
1202 data = Base64.decode(parts[1], 0);
1203 } else {
1204 data = parts[1].getBytes("UTF-8");
1205 }
1206
1207 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1208 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1209
1210 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1211 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1212 int w = info.getSize().getWidth();
1213 int h = info.getSize().getHeight();
1214 Rect r = rectForSize(w, h, size);
1215 decoder.setTargetSize(r.width(), r.height());
1216 });
1217
1218 if (thumbnail != null && file.getAbsolutePath() != null) {
1219 cache.put(file.getAbsolutePath(), thumbnail);
1220 return thumbnail;
1221 }
1222 } else if (uri.getScheme().equals("cid")) {
1223 Cid cid = BobTransfer.cid(uri);
1224 if (cid == null) continue;
1225 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1226 if (f != null && f.canRead()) {
1227 return getThumbnail(f, res, size, cacheOnly);
1228 }
1229 }
1230 }
1231 }
1232 }
1233 }
1234
1235 return getThumbnail(file, res, size, cacheOnly);
1236 }
1237
1238 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1239 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1240 }
1241
1242 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1243 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1244 Drawable thumbnail = cache.get(cacheKey);
1245 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1246 synchronized (THUMBNAIL_LOCK) {
1247 thumbnail = cache.get(cacheKey);
1248 if (thumbnail != null) {
1249 return thumbnail;
1250 }
1251 final String mime = file.getMimeType();
1252 if ("image/svg+xml".equals(mime)) {
1253 thumbnail = getSVG(file, size);
1254 } else if ("application/pdf".equals(mime)) {
1255 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1256 } else if (mime.startsWith("video/")) {
1257 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1258 } else {
1259 thumbnail = getImagePreview(file, res, size, mime);
1260 if (thumbnail == null) {
1261 throw new FileNotFoundException();
1262 }
1263 }
1264 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1265 }
1266 }
1267 return thumbnail;
1268 }
1269
1270 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1271 final Drawable drawable = getThumbnail(message, res, size, false);
1272 if (drawable == null) return null;
1273 return drawDrawable(drawable);
1274 }
1275
1276 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1277 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1278 if (drawable == null) return null;
1279 return drawDrawable(drawable);
1280 }
1281
1282 public static Rect rectForSize(int w, int h, int size) {
1283 int scalledW;
1284 int scalledH;
1285 if (w <= h) {
1286 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1287 scalledH = size;
1288 } else {
1289 scalledW = size;
1290 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1291 }
1292
1293 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1294
1295 return new Rect(0, 0, scalledW, scalledH);
1296 }
1297
1298 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1299 if (android.os.Build.VERSION.SDK_INT >= 28) {
1300 ImageDecoder.Source source = ImageDecoder.createSource(file);
1301 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1302 int w = info.getSize().getWidth();
1303 int h = info.getSize().getHeight();
1304 Rect r = rectForSize(w, h, size);
1305 decoder.setTargetSize(r.width(), r.height());
1306 });
1307 } else {
1308 BitmapFactory.Options options = new BitmapFactory.Options();
1309 options.inSampleSize = calcSampleSize(file, size);
1310 Bitmap bitmap = null;
1311 try {
1312 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1313 } catch (OutOfMemoryError e) {
1314 options.inSampleSize *= 2;
1315 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1316 }
1317 if (bitmap == null) return null;
1318
1319 bitmap = resize(bitmap, size);
1320 bitmap = rotate(bitmap, getRotation(file));
1321 if (mime.equals("image/gif")) {
1322 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1323 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1324 bitmap.recycle();
1325 bitmap = withGifOverlay;
1326 }
1327 return new BitmapDrawable(res, bitmap);
1328 }
1329 }
1330
1331 public static Bitmap drawDrawable(Drawable drawable) {
1332 if (drawable == null) return null;
1333
1334 Bitmap bitmap = null;
1335
1336 if (drawable instanceof BitmapDrawable) {
1337 bitmap = ((BitmapDrawable) drawable).getBitmap();
1338 if (bitmap != null) return bitmap;
1339 }
1340
1341 Rect bounds = drawable.getBounds();
1342 int width = drawable.getIntrinsicWidth();
1343 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1344 int height = drawable.getIntrinsicHeight();
1345 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1346
1347 if (width < 1) {
1348 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1349 width = 48;
1350 }
1351 if (height < 1) {
1352 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1353 height = 48;
1354 }
1355
1356 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1357 Canvas canvas = new Canvas(bitmap);
1358 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1359 drawable.draw(canvas);
1360 return bitmap;
1361 }
1362
1363 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1364 Bitmap overlay =
1365 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1366 Canvas canvas = new Canvas(bitmap);
1367 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1368 Log.d(
1369 Config.LOGTAG,
1370 "target size overlay: "
1371 + targetSize
1372 + " overlay bitmap size was "
1373 + overlay.getHeight());
1374 float left = (canvas.getWidth() - targetSize) / 2.0f;
1375 float top = (canvas.getHeight() - targetSize) / 2.0f;
1376 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1377 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1378 }
1379
1380 /** https://stackoverflow.com/a/3943023/210897 */
1381 private boolean paintOverlayBlack(final Bitmap bitmap) {
1382 final int h = bitmap.getHeight();
1383 final int w = bitmap.getWidth();
1384 int record = 0;
1385 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1386 for (int x = Math.round(w * IGNORE_PADDING);
1387 x < w - Math.round(w * IGNORE_PADDING);
1388 ++x) {
1389 int pixel = bitmap.getPixel(x, y);
1390 if ((Color.red(pixel) * 0.299
1391 + Color.green(pixel) * 0.587
1392 + Color.blue(pixel) * 0.114)
1393 > 186) {
1394 --record;
1395 } else {
1396 ++record;
1397 }
1398 }
1399 }
1400 return record < 0;
1401 }
1402
1403 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1404 final int h = bitmap.getHeight();
1405 final int w = bitmap.getWidth();
1406 int white = 0;
1407 for (int y = 0; y < h; ++y) {
1408 for (int x = 0; x < w; ++x) {
1409 int pixel = bitmap.getPixel(x, y);
1410 if ((Color.red(pixel) * 0.299
1411 + Color.green(pixel) * 0.587
1412 + Color.blue(pixel) * 0.114)
1413 > 186) {
1414 white++;
1415 }
1416 }
1417 }
1418 return white > (h * w * 0.4f);
1419 }
1420
1421 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1422 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1423 Bitmap frame;
1424 try {
1425 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1426 frame = metadataRetriever.getFrameAtTime(0);
1427 metadataRetriever.release();
1428 return cropCenterSquare(frame, size);
1429 } catch (Exception e) {
1430 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1431 frame.eraseColor(0xff000000);
1432 return frame;
1433 }
1434 }
1435
1436 private Bitmap getVideoPreview(final File file, final int size) {
1437 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1438 Bitmap frame;
1439 try {
1440 metadataRetriever.setDataSource(file.getAbsolutePath());
1441 frame = metadataRetriever.getFrameAtTime(0);
1442 metadataRetriever.release();
1443 frame = resize(frame, size);
1444 } catch (IOException | RuntimeException e) {
1445 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1446 frame.eraseColor(0xff000000);
1447 }
1448 drawOverlay(
1449 frame,
1450 paintOverlayBlack(frame)
1451 ? R.drawable.play_video_black
1452 : R.drawable.play_video_white,
1453 0.75f);
1454 return frame;
1455 }
1456
1457 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1458 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1459 try {
1460 final ParcelFileDescriptor fileDescriptor =
1461 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1462 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1463 drawOverlay(
1464 rendered,
1465 paintOverlayBlackPdf(rendered)
1466 ? R.drawable.open_pdf_black
1467 : R.drawable.open_pdf_white,
1468 0.75f);
1469 return rendered;
1470 } catch (final IOException | SecurityException e) {
1471 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1472 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1473 placeholder.eraseColor(0xff000000);
1474 return placeholder;
1475 }
1476 }
1477
1478 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1479 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1480 try {
1481 ParcelFileDescriptor fileDescriptor =
1482 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1483 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1484 return cropCenterSquare(bitmap, size);
1485 } catch (Exception e) {
1486 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1487 placeholder.eraseColor(0xff000000);
1488 return placeholder;
1489 }
1490 }
1491
1492 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1493 private Bitmap renderPdfDocument(
1494 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1495 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1496 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1497 final Dimensions dimensions =
1498 scalePdfDimensions(
1499 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1500 final Bitmap rendered =
1501 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1502 rendered.eraseColor(0xffffffff);
1503 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1504 page.close();
1505 pdfRenderer.close();
1506 fileDescriptor.close();
1507 return rendered;
1508 }
1509
1510 public Uri getTakePhotoUri() {
1511 final String filename =
1512 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1513 final File directory;
1514 if (Config.ONLY_INTERNAL_STORAGE) {
1515 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1516 } else {
1517 directory =
1518 new File(
1519 Environment.getExternalStoragePublicDirectory(
1520 Environment.DIRECTORY_DCIM),
1521 "Camera");
1522 }
1523 final File file = new File(directory, filename);
1524 file.getParentFile().mkdirs();
1525 return getUriForFile(mXmppConnectionService, file);
1526 }
1527
1528 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1529
1530 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1531 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1532 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1533 return uncompressAvatar.first;
1534 }
1535 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1536 Log.d(
1537 Config.LOGTAG,
1538 "uncompressed avatar exceeded char limit by "
1539 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1540 }
1541
1542 Bitmap bm = cropCenterSquare(image, size);
1543 if (bm == null) {
1544 return null;
1545 }
1546 if (hasAlpha(bm)) {
1547 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1548 bm.recycle();
1549 bm = cropCenterSquare(image, 96);
1550 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1551 }
1552 return getPepAvatar(bm, format, 100);
1553 }
1554
1555 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1556 try {
1557 if (android.os.Build.VERSION.SDK_INT >= 28) {
1558 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1559 int[] size = new int[] { 0, 0 };
1560 boolean[] animated = new boolean[] { false };
1561 String[] mimeType = new String[] { null };
1562 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1563 mimeType[0] = info.getMimeType();
1564 animated[0] = info.isAnimated();
1565 size[0] = info.getSize().getWidth();
1566 size[1] = info.getSize().getHeight();
1567 });
1568
1569 if (animated[0]) {
1570 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1571 if (avatar != null) return new Pair(avatar, true);
1572 }
1573
1574 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1575 } else {
1576 Bitmap bitmap =
1577 BitmapFactory.decodeStream(
1578 mXmppConnectionService.getContentResolver().openInputStream(uri));
1579 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1580 }
1581 } catch (Exception e) {
1582 try {
1583 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1584 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1585 } catch (Exception e2) {
1586 return null;
1587 }
1588 }
1589 }
1590
1591 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1592 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1593 if (fd.getLength() > 100000) return null; // Too big to use raw file
1594
1595 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1596 Base64OutputStream mBase64OutputStream =
1597 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1598 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1599 DigestOutputStream mDigestOutputStream =
1600 new DigestOutputStream(mBase64OutputStream, digest);
1601
1602 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1603 mDigestOutputStream.flush();
1604 mDigestOutputStream.close();
1605
1606 final Avatar avatar = new Avatar();
1607 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1608 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1609 avatar.type = mimeType;
1610 avatar.width = width;
1611 avatar.height = height;
1612 return avatar;
1613 }
1614
1615 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1616 try {
1617 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1618 Base64OutputStream mBase64OutputStream =
1619 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1620 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1621 DigestOutputStream mDigestOutputStream =
1622 new DigestOutputStream(mBase64OutputStream, digest);
1623 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1624 return null;
1625 }
1626 mDigestOutputStream.flush();
1627 mDigestOutputStream.close();
1628 long chars = mByteArrayOutputStream.size();
1629 if (format != Bitmap.CompressFormat.PNG
1630 && quality >= 50
1631 && chars >= Config.AVATAR_CHAR_LIMIT) {
1632 int q = quality - 2;
1633 Log.d(
1634 Config.LOGTAG,
1635 "avatar char length was " + chars + " reducing quality to " + q);
1636 return getPepAvatar(bitmap, format, q);
1637 }
1638 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1639 final Avatar avatar = new Avatar();
1640 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1641 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1642 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1643 avatar.type = "image/webp";
1644 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1645 avatar.type = "image/jpeg";
1646 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1647 avatar.type = "image/png";
1648 }
1649 avatar.width = bitmap.getWidth();
1650 avatar.height = bitmap.getHeight();
1651 return avatar;
1652 } catch (OutOfMemoryError e) {
1653 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1654 return null;
1655 } catch (Exception e) {
1656 return null;
1657 }
1658 }
1659
1660 public Avatar getStoredPepAvatar(String hash) {
1661 if (hash == null) {
1662 return null;
1663 }
1664 Avatar avatar = new Avatar();
1665 final File file = getAvatarFile(hash);
1666 FileInputStream is = null;
1667 try {
1668 avatar.size = file.length();
1669 BitmapFactory.Options options = new BitmapFactory.Options();
1670 options.inJustDecodeBounds = true;
1671 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1672 is = new FileInputStream(file);
1673 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1674 Base64OutputStream mBase64OutputStream =
1675 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1676 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1677 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1678 byte[] buffer = new byte[4096];
1679 int length;
1680 while ((length = is.read(buffer)) > 0) {
1681 os.write(buffer, 0, length);
1682 }
1683 os.flush();
1684 os.close();
1685 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1686 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1687 avatar.height = options.outHeight;
1688 avatar.width = options.outWidth;
1689 avatar.type = options.outMimeType;
1690 return avatar;
1691 } catch (NoSuchAlgorithmException | IOException e) {
1692 return null;
1693 } finally {
1694 close(is);
1695 }
1696 }
1697
1698 public boolean isAvatarCached(Avatar avatar) {
1699 final File file = getAvatarFile(avatar.getFilename());
1700 return file.exists();
1701 }
1702
1703 public boolean save(final Avatar avatar) {
1704 File file;
1705 if (isAvatarCached(avatar)) {
1706 file = getAvatarFile(avatar.getFilename());
1707 avatar.size = file.length();
1708 } else {
1709 file =
1710 new File(
1711 mXmppConnectionService.getCacheDir().getAbsolutePath()
1712 + "/"
1713 + UUID.randomUUID().toString());
1714 if (file.getParentFile().mkdirs()) {
1715 Log.d(Config.LOGTAG, "created cache directory");
1716 }
1717 OutputStream os = null;
1718 try {
1719 if (!file.createNewFile()) {
1720 Log.d(
1721 Config.LOGTAG,
1722 "unable to create temporary file " + file.getAbsolutePath());
1723 }
1724 os = new FileOutputStream(file);
1725 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1726 digest.reset();
1727 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1728 final byte[] bytes = avatar.getImageAsBytes();
1729 mDigestOutputStream.write(bytes);
1730 mDigestOutputStream.flush();
1731 mDigestOutputStream.close();
1732 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1733 if (sha1sum.equals(avatar.sha1sum)) {
1734 final File outputFile = getAvatarFile(avatar.getFilename());
1735 if (outputFile.getParentFile().mkdirs()) {
1736 Log.d(Config.LOGTAG, "created avatar directory");
1737 }
1738 final File avatarFile = getAvatarFile(avatar.getFilename());
1739 if (!file.renameTo(avatarFile)) {
1740 Log.d(
1741 Config.LOGTAG,
1742 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1743 return false;
1744 }
1745 } else {
1746 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1747 if (!file.delete()) {
1748 Log.d(Config.LOGTAG, "unable to delete temporary file");
1749 }
1750 return false;
1751 }
1752 avatar.size = bytes.length;
1753 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1754 return false;
1755 } finally {
1756 close(os);
1757 }
1758 }
1759 return true;
1760 }
1761
1762 public void deleteHistoricAvatarPath() {
1763 delete(getHistoricAvatarPath());
1764 }
1765
1766 private void delete(final File file) {
1767 if (file.isDirectory()) {
1768 final File[] files = file.listFiles();
1769 if (files != null) {
1770 for (final File f : files) {
1771 delete(f);
1772 }
1773 }
1774 }
1775 if (file.delete()) {
1776 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1777 }
1778 }
1779
1780 private File getHistoricAvatarPath() {
1781 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1782 }
1783
1784 public File getAvatarFile(String avatar) {
1785 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1786 }
1787
1788 public Uri getAvatarUri(String avatar) {
1789 return Uri.fromFile(getAvatarFile(avatar));
1790 }
1791
1792 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1793 if (android.os.Build.VERSION.SDK_INT >= 28) {
1794 try {
1795 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1796 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1797 int w = info.getSize().getWidth();
1798 int h = info.getSize().getHeight();
1799 Rect r = rectForSize(w, h, size);
1800 decoder.setTargetSize(r.width(), r.height());
1801
1802 int newSize = Math.min(r.width(), r.height());
1803 int left = (r.width() - newSize) / 2;
1804 int top = (r.height() - newSize) / 2;
1805 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1806 });
1807 } catch (final IOException e) {
1808 return getSVGSquare(image, size);
1809 }
1810 } else {
1811 Bitmap bitmap = cropCenterSquare(image, size);
1812 return bitmap == null ? null : new BitmapDrawable(bitmap);
1813 }
1814 }
1815
1816 public Bitmap cropCenterSquare(Uri image, int size) {
1817 if (image == null) {
1818 return null;
1819 }
1820 InputStream is = null;
1821 try {
1822 BitmapFactory.Options options = new BitmapFactory.Options();
1823 options.inSampleSize = calcSampleSize(image, size);
1824 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1825 if (is == null) {
1826 return null;
1827 }
1828 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1829 if (input == null) {
1830 return null;
1831 } else {
1832 input = rotate(input, getRotation(image));
1833 return cropCenterSquare(input, size);
1834 }
1835 } catch (FileNotFoundException | SecurityException e) {
1836 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1837 return null;
1838 } finally {
1839 close(is);
1840 }
1841 }
1842
1843 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1844 if (image == null) {
1845 return null;
1846 }
1847 InputStream is = null;
1848 try {
1849 BitmapFactory.Options options = new BitmapFactory.Options();
1850 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1851 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1852 if (is == null) {
1853 return null;
1854 }
1855 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1856 if (source == null) {
1857 return null;
1858 }
1859 int sourceWidth = source.getWidth();
1860 int sourceHeight = source.getHeight();
1861 float xScale = (float) newWidth / sourceWidth;
1862 float yScale = (float) newHeight / sourceHeight;
1863 float scale = Math.max(xScale, yScale);
1864 float scaledWidth = scale * sourceWidth;
1865 float scaledHeight = scale * sourceHeight;
1866 float left = (newWidth - scaledWidth) / 2;
1867 float top = (newHeight - scaledHeight) / 2;
1868
1869 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1870 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1871 Canvas canvas = new Canvas(dest);
1872 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1873 if (source.isRecycled()) {
1874 source.recycle();
1875 }
1876 return dest;
1877 } catch (SecurityException e) {
1878 return null; // android 6.0 with revoked permissions for example
1879 } catch (FileNotFoundException e) {
1880 return null;
1881 } finally {
1882 close(is);
1883 }
1884 }
1885
1886 public Bitmap cropCenterSquare(Bitmap input, int size) {
1887 int w = input.getWidth();
1888 int h = input.getHeight();
1889
1890 float scale = Math.max((float) size / h, (float) size / w);
1891
1892 float outWidth = scale * w;
1893 float outHeight = scale * h;
1894 float left = (size - outWidth) / 2;
1895 float top = (size - outHeight) / 2;
1896 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1897
1898 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1899 Canvas canvas = new Canvas(output);
1900 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1901 if (!input.isRecycled()) {
1902 input.recycle();
1903 }
1904 return output;
1905 }
1906
1907 private int calcSampleSize(Uri image, int size)
1908 throws FileNotFoundException, SecurityException {
1909 final BitmapFactory.Options options = new BitmapFactory.Options();
1910 options.inJustDecodeBounds = true;
1911 final InputStream inputStream =
1912 mXmppConnectionService.getContentResolver().openInputStream(image);
1913 BitmapFactory.decodeStream(inputStream, null, options);
1914 close(inputStream);
1915 return calcSampleSize(options, size);
1916 }
1917
1918 public void updateFileParams(Message message) {
1919 updateFileParams(message, null);
1920 }
1921
1922 public void updateFileParams(final Message message, final String url) {
1923 updateFileParams(message, url, true);
1924 }
1925
1926 public void updateFileParams(final Message message, String url, boolean updateCids) {
1927 final boolean encrypted =
1928 message.getEncryption() == Message.ENCRYPTION_PGP
1929 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1930 final DownloadableFile file = getFile(message);
1931 final String mime = file.getMimeType();
1932 final boolean privateMessage = message.isPrivateMessage();
1933 final boolean image =
1934 message.getType() == Message.TYPE_IMAGE
1935 || (mime != null && mime.startsWith("image/"));
1936 Message.FileParams fileParams = message.getFileParams();
1937 if (fileParams == null) fileParams = new Message.FileParams();
1938 Cid[] cids = new Cid[0];
1939 try {
1940 cids = calculateCids(new FileInputStream(file));
1941 fileParams.setCids(List.of(cids));
1942 } catch (final IOException | NoSuchAlgorithmException e) { }
1943 if (url == null) {
1944 for (Cid cid : cids) {
1945 url = mXmppConnectionService.getUrlForCid(cid);
1946 if (url != null) {
1947 fileParams.url = url;
1948 break;
1949 }
1950 }
1951 } else {
1952 fileParams.url = url;
1953 }
1954 if (fileParams.getName() == null) fileParams.setName(file.getName());
1955 fileParams.setMediaType(mime);
1956 if (encrypted && !file.exists()) {
1957 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
1958 final DownloadableFile encryptedFile = getFile(message, false);
1959 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
1960 } else {
1961 Log.d(Config.LOGTAG, "running updateFileParams");
1962 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
1963 final boolean video = mime != null && mime.startsWith("video/");
1964 final boolean audio = mime != null && mime.startsWith("audio/");
1965 final boolean pdf = "application/pdf".equals(mime);
1966 if (file.canRead()) fileParams.size = file.getSize();
1967 if (ambiguous) {
1968 try {
1969 final Dimensions dimensions = getVideoDimensions(file);
1970 if (dimensions.valid()) {
1971 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
1972 fileParams.width = dimensions.width;
1973 fileParams.height = dimensions.height;
1974 } else {
1975 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1976 fileParams.runtime = getMediaRuntime(file);
1977 }
1978 } catch (final IOException | NotAVideoFile e) {
1979 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1980 fileParams.runtime = getMediaRuntime(file);
1981 }
1982 } else if (image || video || pdf) {
1983 try {
1984 final Dimensions dimensions;
1985 if (video) {
1986 dimensions = getVideoDimensions(file);
1987 } else if (pdf) {
1988 dimensions = getPdfDocumentDimensions(file);
1989 } else if ("image/svg+xml".equals(mime)) {
1990 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
1991 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
1992 } else {
1993 dimensions = getImageDimensions(file);
1994 }
1995 if (dimensions.valid()) {
1996 fileParams.width = dimensions.width;
1997 fileParams.height = dimensions.height;
1998 }
1999 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2000 Log.d(
2001 Config.LOGTAG,
2002 "file with mime type " + file.getMimeType() + " was not a video file");
2003 // fall threw
2004 }
2005 } else if (audio) {
2006 fileParams.runtime = getMediaRuntime(file);
2007 }
2008 try {
2009 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2010 if (thumb != null) {
2011 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2012 byte[] rgba = new byte[pixels.length * 4];
2013 try {
2014 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2015 } catch (final IllegalStateException e) {
2016 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2017 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2018 softThumb.recycle();
2019 }
2020 for (int i = 0; i < pixels.length; i++) {
2021 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2022 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2023 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2024 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2025 }
2026 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2027 }
2028 } catch (final IOException e) { }
2029 }
2030 message.setFileParams(fileParams);
2031 message.setDeleted(false);
2032 message.setType(
2033 privateMessage
2034 ? Message.TYPE_PRIVATE_FILE
2035 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2036
2037 if (updateCids) {
2038 try {
2039 for (int i = 0; i < cids.length; i++) {
2040 mXmppConnectionService.saveCid(cids[i], file);
2041 }
2042 } catch (XmppConnectionService.BlockedMediaException e) { }
2043 }
2044 }
2045
2046 private int getMediaRuntime(final File file) {
2047 try {
2048 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2049 mediaMetadataRetriever.setDataSource(file.toString());
2050 final String value =
2051 mediaMetadataRetriever.extractMetadata(
2052 MediaMetadataRetriever.METADATA_KEY_DURATION);
2053 if (Strings.isNullOrEmpty(value)) {
2054 return 0;
2055 }
2056 return Integer.parseInt(value);
2057 } catch (final Exception e) {
2058 return 0;
2059 }
2060 }
2061
2062 private Dimensions getImageDimensions(File file) {
2063 final BitmapFactory.Options options = new BitmapFactory.Options();
2064 options.inJustDecodeBounds = true;
2065 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2066 final int rotation = getRotation(file);
2067 final boolean rotated = rotation == 90 || rotation == 270;
2068 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2069 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2070 return new Dimensions(imageHeight, imageWidth);
2071 }
2072
2073 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2074 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2075 try {
2076 metadataRetriever.setDataSource(file.getAbsolutePath());
2077 } catch (RuntimeException e) {
2078 throw new NotAVideoFile(e);
2079 }
2080 return getVideoDimensions(metadataRetriever);
2081 }
2082
2083 private Dimensions getPdfDocumentDimensions(final File file) {
2084 final ParcelFileDescriptor fileDescriptor;
2085 try {
2086 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2087 if (fileDescriptor == null) {
2088 return new Dimensions(0, 0);
2089 }
2090 } catch (final FileNotFoundException e) {
2091 return new Dimensions(0, 0);
2092 }
2093 try {
2094 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2095 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2096 final int height = page.getHeight();
2097 final int width = page.getWidth();
2098 page.close();
2099 pdfRenderer.close();
2100 return scalePdfDimensions(new Dimensions(height, width));
2101 } catch (final IOException | SecurityException e) {
2102 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2103 return new Dimensions(0, 0);
2104 }
2105 }
2106
2107 private Dimensions scalePdfDimensions(Dimensions in) {
2108 final DisplayMetrics displayMetrics =
2109 mXmppConnectionService.getResources().getDisplayMetrics();
2110 final int target = (int) (displayMetrics.density * 288);
2111 return scalePdfDimensions(in, target, true);
2112 }
2113
2114 private static Dimensions scalePdfDimensions(
2115 final Dimensions in, final int target, final boolean fit) {
2116 final int w, h;
2117 if (fit == (in.width <= in.height)) {
2118 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2119 h = target;
2120 } else {
2121 w = target;
2122 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2123 }
2124 return new Dimensions(h, w);
2125 }
2126
2127 public Drawable getAvatar(String avatar, int size) {
2128 if (avatar == null) {
2129 return null;
2130 }
2131
2132 if (android.os.Build.VERSION.SDK_INT >= 28) {
2133 try {
2134 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2135 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2136 int w = info.getSize().getWidth();
2137 int h = info.getSize().getHeight();
2138 Rect r = rectForSize(w, h, size);
2139 decoder.setTargetSize(r.width(), r.height());
2140
2141 int newSize = Math.min(r.width(), r.height());
2142 int left = (r.width() - newSize) / 2;
2143 int top = (r.height() - newSize) / 2;
2144 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2145 });
2146 } catch (final IOException e) {
2147 return getSVGSquare(getAvatarUri(avatar), size);
2148 }
2149 } else {
2150 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2151 return bm == null ? null : new BitmapDrawable(bm);
2152 }
2153 }
2154
2155 public Drawable getSVGSquare(Uri uri, int size) {
2156 try {
2157 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2158 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2159
2160 float w = svg.getDocumentWidth();
2161 float h = svg.getDocumentHeight();
2162 float scale = Math.max((float) size / h, (float) size / w);
2163 float outWidth = scale * w;
2164 float outHeight = scale * h;
2165 float left = (size - outWidth) / 2;
2166 float top = (size - outHeight) / 2;
2167 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2168 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2169 svg.setDocumentWidth("100%");
2170 svg.setDocumentHeight("100%");
2171
2172 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2173 Canvas canvas = new Canvas(output);
2174 svg.renderToCanvas(canvas, target);
2175
2176 return new SVGDrawable(output);
2177 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2178 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2179 return null;
2180 }
2181 }
2182
2183 public Drawable getSVG(File file, int size) {
2184 try {
2185 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2186 return drawSVG(svg, size);
2187 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2188 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2189 return null;
2190 }
2191 }
2192
2193 public Drawable drawSVG(SVG svg, int size) {
2194 try {
2195 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2196
2197 float w = svg.getDocumentWidth();
2198 float h = svg.getDocumentHeight();
2199 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2200 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2201 svg.setDocumentWidth("100%");
2202 svg.setDocumentHeight("100%");
2203
2204 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2205 Canvas canvas = new Canvas(output);
2206 svg.renderToCanvas(canvas);
2207
2208 return new SVGDrawable(output);
2209 } catch (final SVGParseException e) {
2210 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2211 return null;
2212 }
2213 }
2214
2215 private static class Dimensions {
2216 public final int width;
2217 public final int height;
2218
2219 Dimensions(int height, int width) {
2220 this.width = width;
2221 this.height = height;
2222 }
2223
2224 public int getMin() {
2225 return Math.min(width, height);
2226 }
2227
2228 public boolean valid() {
2229 return width > 0 && height > 0;
2230 }
2231 }
2232
2233 private static class NotAVideoFile extends Exception {
2234 public NotAVideoFile(Throwable t) {
2235 super(t);
2236 }
2237
2238 public NotAVideoFile() {
2239 super();
2240 }
2241 }
2242
2243 public static class ImageCompressionException extends Exception {
2244
2245 ImageCompressionException(String message) {
2246 super(message);
2247 }
2248 }
2249
2250 public static class FileCopyException extends Exception {
2251 private final int resId;
2252
2253 private FileCopyException(@StringRes int resId) {
2254 this.resId = resId;
2255 }
2256
2257 public @StringRes int getResId() {
2258 return resId;
2259 }
2260 }
2261
2262 public static class SVGDrawable extends BitmapDrawable {
2263 public SVGDrawable(Bitmap bm) { super(bm); }
2264 }
2265}