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 long getUriSize(final Uri uri) {
652 Cursor cursor = null;
653 try {
654 cursor = mXmppConnectionService.getContentResolver().query(uri, null, null, null, null);
655 if (cursor != null && cursor.moveToFirst()) {
656 int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
657 return cursor.getLong(sizeIndex);
658 }
659 } finally {
660 if (cursor != null) {
661 cursor.close();
662 }
663 }
664 return 0; // Return 0 if the size information is not available
665 }
666
667 public boolean useImageAsIs(final Uri uri) {
668 try {
669 for (Cid cid : calculateCids(uri)) {
670 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
671 }
672
673 long fsize = getUriSize(uri);
674 if (fsize == 0 || fsize >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
675 return false;
676 }
677
678 if (android.os.Build.VERSION.SDK_INT >= 28) {
679 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
680 int[] size = new int[] { 0, 0 };
681 boolean[] animated = new boolean[] { false };
682 String[] mimeType = new String[] { null };
683 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
684 mimeType[0] = info.getMimeType();
685 animated[0] = info.isAnimated();
686 size[0] = info.getSize().getWidth();
687 size[1] = info.getSize().getHeight();
688 });
689
690 return animated[0] || (size[0] <= Config.IMAGE_SIZE && size[1] <= Config.IMAGE_SIZE);
691 }
692
693 BitmapFactory.Options options = new BitmapFactory.Options();
694 options.inJustDecodeBounds = true;
695 final InputStream inputStream =
696 mXmppConnectionService.getContentResolver().openInputStream(uri);
697 BitmapFactory.decodeStream(inputStream, null, options);
698 close(inputStream);
699 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
700 return false;
701 }
702 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE);
703 } catch (final IOException e) {
704 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
705 return false;
706 }
707 }
708
709 public String getOriginalPath(final Uri uri) {
710 return FileUtils.getPath(mXmppConnectionService, uri);
711 }
712
713 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
714 Log.d(
715 Config.LOGTAG,
716 "copy file (" + file + ") to " + df);
717 try (final InputStream is = new FileInputStream(file);
718 final OutputStream os =
719 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
720 if (is == null) {
721 throw new FileCopyException(R.string.error_file_not_found);
722 }
723 try {
724 ByteStreams.copy(is, os);
725 os.flush();
726 } catch (IOException e) {
727 throw new FileWriterException(file);
728 }
729 } catch (final FileNotFoundException e) {
730 throw new FileCopyException(R.string.error_file_not_found);
731 } catch (final FileWriterException e) {
732 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
733 } catch (final SecurityException | IllegalStateException e) {
734 throw new FileCopyException(R.string.error_security_exception);
735 } catch (final IOException e) {
736 throw new FileCopyException(R.string.error_io_exception);
737 }
738 }
739
740 private InputStream openInputStream(Uri uri) throws IOException {
741 if (uri != null && "data".equals(uri.getScheme())) {
742 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
743 byte[] data;
744 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
745 String[] parts2 = parts[0].split(";", 2);
746 parts[0] = parts2[0];
747 data = Base64.decode(parts[1], 0);
748 } else {
749 try {
750 data = parts[1].getBytes("UTF-8");
751 } catch (final IOException e) {
752 data = new byte[0];
753 }
754 }
755 return new ByteArrayInputStream(data);
756 }
757 final InputStream is = mXmppConnectionService.getContentResolver().openInputStream(uri);
758 if (is == null) throw new FileNotFoundException("File not found");
759 return is;
760 }
761
762 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
763 Log.d(
764 Config.LOGTAG,
765 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
766 file.getParentFile().mkdirs();
767 try {
768 if (!file.createNewFile() && file.length() > 0) {
769 if (file.canRead() && file.getName().startsWith("zb2")) return; // We have this content already
770 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
771 }
772 } catch (IOException e) {
773 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
774 }
775 try (final OutputStream os = new FileOutputStream(file);
776 final InputStream is = openInputStream(uri)) {
777 if (is == null) {
778 throw new FileCopyException(R.string.error_file_not_found);
779 }
780 try {
781 ByteStreams.copy(is, os);
782 } catch (IOException e) {
783 throw new FileWriterException(file);
784 }
785 try {
786 os.flush();
787 } catch (IOException e) {
788 throw new FileWriterException(file);
789 }
790 } catch (final FileNotFoundException e) {
791 cleanup(file);
792 throw new FileCopyException(R.string.error_file_not_found);
793 } catch (final FileWriterException e) {
794 cleanup(file);
795 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
796 } catch (final SecurityException | IllegalStateException e) {
797 cleanup(file);
798 throw new FileCopyException(R.string.error_security_exception);
799 } catch (final IOException e) {
800 cleanup(file);
801 throw new FileCopyException(R.string.error_io_exception);
802 }
803 }
804
805 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
806 throws FileCopyException {
807 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
808 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
809 String extension = MimeUtils.guessExtensionFromMimeType(mime);
810 if (extension == null) {
811 Log.d(Config.LOGTAG, "extension from mime type was null");
812 extension = getExtensionFromUri(uri);
813 }
814 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
815 extension = "oga";
816 }
817
818 try {
819 setupRelativeFilePath(message, uri, extension);
820 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
821 final String name = getDisplayNameFromUri(uri);
822 if (name != null) {
823 message.getFileParams().setName(name);
824 }
825 } catch (final XmppConnectionService.BlockedMediaException e) {
826 message.setRelativeFilePath(null);
827 message.setDeleted(true);
828 }
829 }
830
831 private String getDisplayNameFromUri(final Uri uri) {
832 final String[] projection = {OpenableColumns.DISPLAY_NAME};
833 String filename = null;
834 try (final Cursor cursor =
835 mXmppConnectionService
836 .getContentResolver()
837 .query(uri, projection, null, null, null)) {
838 if (cursor != null && cursor.moveToFirst()) {
839 filename = cursor.getString(0);
840 }
841 } catch (final Exception e) {
842 filename = null;
843 }
844 return filename;
845 }
846
847 private String getExtensionFromUri(final Uri uri) {
848 final String[] projection = {MediaStore.MediaColumns.DATA};
849 String filename = null;
850 try (final Cursor cursor =
851 mXmppConnectionService
852 .getContentResolver()
853 .query(uri, projection, null, null, null)) {
854 if (cursor != null && cursor.moveToFirst()) {
855 filename = cursor.getString(0);
856 }
857 } catch (final Exception e) {
858 filename = null;
859 }
860 if (filename == null) {
861 final List<String> segments = uri.getPathSegments();
862 if (segments.size() > 0) {
863 filename = segments.get(segments.size() - 1);
864 }
865 }
866 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
867 return pos > 0 ? filename.substring(pos + 1) : null;
868 }
869
870 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
871 throws FileCopyException, ImageCompressionException {
872 final File parent = file.getParentFile();
873 if (parent != null && parent.mkdirs()) {
874 Log.d(Config.LOGTAG, "created parent directory");
875 }
876 InputStream is = null;
877 OutputStream os = null;
878 try {
879 if (!file.exists() && !file.createNewFile()) {
880 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
881 }
882 is = mXmppConnectionService.getContentResolver().openInputStream(image);
883 if (is == null) {
884 throw new FileCopyException(R.string.error_not_an_image_file);
885 }
886 final Bitmap originalBitmap;
887 final BitmapFactory.Options options = new BitmapFactory.Options();
888 final int inSampleSize = (int) Math.pow(2, sampleSize);
889 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
890 options.inSampleSize = inSampleSize;
891 originalBitmap = BitmapFactory.decodeStream(is, null, options);
892 is.close();
893 if (originalBitmap == null) {
894 throw new ImageCompressionException("Source file was not an image");
895 }
896 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
897 originalBitmap.recycle();
898 throw new ImageCompressionException("Source file had alpha channel");
899 }
900 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
901 final int rotation = getRotation(image);
902 scaledBitmap = rotate(scaledBitmap, rotation);
903 boolean targetSizeReached = false;
904 int quality = Config.IMAGE_QUALITY;
905 final int imageMaxSize =
906 mXmppConnectionService
907 .getResources()
908 .getInteger(R.integer.auto_accept_filesize);
909 while (!targetSizeReached) {
910 os = new FileOutputStream(file);
911 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
912 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
913 if (!success) {
914 throw new FileCopyException(R.string.error_compressing_image);
915 }
916 os.flush();
917 final long fileSize = file.length();
918 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
919 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
920 quality -= 5;
921 }
922 scaledBitmap.recycle();
923 } catch (final FileNotFoundException e) {
924 cleanup(file);
925 throw new FileCopyException(R.string.error_file_not_found);
926 } catch (final IOException e) {
927 cleanup(file);
928 throw new FileCopyException(R.string.error_io_exception);
929 } catch (SecurityException e) {
930 cleanup(file);
931 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
932 } catch (final OutOfMemoryError e) {
933 ++sampleSize;
934 if (sampleSize <= 3) {
935 copyImageToPrivateStorage(file, image, sampleSize);
936 } else {
937 throw new FileCopyException(R.string.error_out_of_memory);
938 }
939 } finally {
940 close(os);
941 close(is);
942 }
943 }
944
945 private static void cleanup(final File file) {
946 try {
947 file.delete();
948 } catch (Exception e) {
949
950 }
951 }
952
953 public void copyImageToPrivateStorage(File file, Uri image)
954 throws FileCopyException, ImageCompressionException {
955 Log.d(
956 Config.LOGTAG,
957 "copy image ("
958 + image.toString()
959 + ") to private storage "
960 + file.getAbsolutePath());
961 copyImageToPrivateStorage(file, image, 0);
962 }
963
964 public void copyImageToPrivateStorage(Message message, Uri image)
965 throws FileCopyException, ImageCompressionException {
966 final String filename;
967 switch (Config.IMAGE_FORMAT) {
968 case JPEG:
969 filename = String.format("%s.%s", message.getUuid(), "jpg");
970 break;
971 case PNG:
972 filename = String.format("%s.%s", message.getUuid(), "png");
973 break;
974 case WEBP:
975 filename = String.format("%s.%s", message.getUuid(), "webp");
976 break;
977 default:
978 throw new IllegalStateException("Unknown image format");
979 }
980 setupRelativeFilePath(message, filename);
981 final File tmp = getFile(message);
982 copyImageToPrivateStorage(tmp, image);
983 final String extension = MimeUtils.extractRelevantExtension(filename);
984 try {
985 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
986 } catch (final FileNotFoundException e) {
987 throw new FileCopyException(R.string.error_file_not_found);
988 } catch (final IOException e) {
989 throw new FileCopyException(R.string.error_io_exception);
990 } catch (final XmppConnectionService.BlockedMediaException e) {
991 tmp.delete();
992 message.setRelativeFilePath(null);
993 message.setDeleted(true);
994 return;
995 }
996 tmp.renameTo(getFile(message));
997 updateFileParams(message, null, false);
998 }
999
1000 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
1001 try {
1002 setupRelativeFilePath(message, openInputStream(uri), extension);
1003 } catch (final FileNotFoundException e) {
1004 throw new FileCopyException(R.string.error_file_not_found);
1005 } catch (final IOException e) {
1006 throw new FileCopyException(R.string.error_io_exception);
1007 }
1008 }
1009
1010 public Cid[] calculateCids(final Uri uri) throws IOException {
1011 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
1012 }
1013
1014 public Cid[] calculateCids(final InputStream is) throws IOException {
1015 try {
1016 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
1017 } catch (final NoSuchAlgorithmException e) {
1018 throw new AssertionError(e);
1019 }
1020 }
1021
1022 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1023 message.setRelativeFilePath(getStorageLocation(is, extension).getAbsolutePath());
1024 }
1025
1026 public void setupRelativeFilePath(final Message message, final String filename) {
1027 final String extension = MimeUtils.extractRelevantExtension(filename);
1028 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1029 setupRelativeFilePath(message, filename, mime);
1030 }
1031
1032 public File getStorageLocation(final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1033 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1034 Cid[] cids = calculateCids(is);
1035 String base = cids[0].toString();
1036
1037 File file = null;
1038 while (file == null || (file.exists() && !file.canRead())) {
1039 file = getStorageLocation(String.format("%s.%s", base, extension), mime);
1040 base += "_";
1041 }
1042 for (int i = 0; i < cids.length; i++) {
1043 mXmppConnectionService.saveCid(cids[i], file);
1044 }
1045 return file;
1046 }
1047
1048 public File getStorageLocation(final String filename, final String mime) {
1049 final File parentDirectory;
1050 if (Strings.isNullOrEmpty(mime)) {
1051 parentDirectory =
1052 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1053 } else if (mime.startsWith("image/")) {
1054 parentDirectory =
1055 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1056 } else if (mime.startsWith("video/")) {
1057 parentDirectory =
1058 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1059 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1060 parentDirectory =
1061 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1062 } else {
1063 parentDirectory =
1064 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1065 }
1066 final File appDirectory =
1067 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1068 return new File(appDirectory, filename);
1069 }
1070
1071 public static boolean inConversationsDirectory(final Context context, String path) {
1072 final File fileDirectory = new File(path).getParentFile();
1073 for (final String type : STORAGE_TYPES) {
1074 final File typeDirectory =
1075 new File(
1076 Environment.getExternalStoragePublicDirectory(type),
1077 context.getString(R.string.app_name));
1078 if (typeDirectory.equals(fileDirectory)) {
1079 return true;
1080 }
1081 }
1082 return false;
1083 }
1084
1085 public void setupRelativeFilePath(
1086 final Message message, final String filename, final String mime) {
1087 final File file = getStorageLocation(filename, mime);
1088 message.setRelativeFilePath(file.getAbsolutePath());
1089 }
1090
1091 public boolean unusualBounds(final Uri image) {
1092 try {
1093 final BitmapFactory.Options options = new BitmapFactory.Options();
1094 options.inJustDecodeBounds = true;
1095 final InputStream inputStream =
1096 mXmppConnectionService.getContentResolver().openInputStream(image);
1097 BitmapFactory.decodeStream(inputStream, null, options);
1098 close(inputStream);
1099 float ratio = (float) options.outHeight / options.outWidth;
1100 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1101 } catch (final Exception e) {
1102 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1103 return false;
1104 }
1105 }
1106
1107 private int getRotation(final File file) {
1108 try (final InputStream inputStream = new FileInputStream(file)) {
1109 return getRotation(inputStream);
1110 } catch (Exception e) {
1111 return 0;
1112 }
1113 }
1114
1115 private int getRotation(final Uri image) {
1116 try (final InputStream is =
1117 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1118 return is == null ? 0 : getRotation(is);
1119 } catch (final Exception e) {
1120 return 0;
1121 }
1122 }
1123
1124 private static int getRotation(final InputStream inputStream) throws IOException {
1125 final ExifInterface exif = new ExifInterface(inputStream);
1126 final int orientation =
1127 exif.getAttributeInt(
1128 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1129 switch (orientation) {
1130 case ExifInterface.ORIENTATION_ROTATE_180:
1131 return 180;
1132 case ExifInterface.ORIENTATION_ROTATE_90:
1133 return 90;
1134 case ExifInterface.ORIENTATION_ROTATE_270:
1135 return 270;
1136 default:
1137 return 0;
1138 }
1139 }
1140
1141 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1142 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1143 if (thumbs != null && !thumbs.isEmpty()) {
1144 for (Element thumb : thumbs) {
1145 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1146 if (uri.getScheme().equals("data")) {
1147 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1148
1149 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1150 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1151 if (cached != null || cacheOnly) return cached;
1152
1153 byte[] data;
1154 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1155 String[] parts2 = parts[0].split(";", 2);
1156 parts[0] = parts2[0];
1157 data = Base64.decode(parts[1], 0);
1158 } else {
1159 try {
1160 data = parts[1].getBytes("UTF-8");
1161 } catch (final IOException e) {
1162 data = new byte[0];
1163 }
1164 }
1165
1166 if (parts[0].equals("image/blurhash")) {
1167 int width = message.getFileParams().width;
1168 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1169 if (width < 1) width = 1920;
1170
1171 int height = message.getFileParams().height;
1172 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1173 if (height < 1) height = 1080;
1174 Rect r = rectForSize(width, height, size);
1175
1176 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1177 if (blurhash != null) {
1178 cached = new BitmapDrawable(blurhash);
1179 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1180 return cached;
1181 }
1182 } else if (parts[0].equals("image/thumbhash")) {
1183 ThumbHash.Image image;
1184 try {
1185 image = ThumbHash.thumbHashToRGBA(data);
1186 } catch (final Exception e) {
1187 continue;
1188 }
1189 int[] pixels = new int[image.width * image.height];
1190 for (int i = 0; i < pixels.length; i++) {
1191 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);
1192 }
1193 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1194 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1195 return cached;
1196 }
1197 }
1198 }
1199 }
1200
1201 return null;
1202 }
1203
1204 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1205 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1206 DownloadableFile file = getFile(message);
1207 Drawable thumbnail = cache.get(file.getAbsolutePath());
1208 if (thumbnail != null) return thumbnail;
1209
1210 if ((thumbnail == null) && (!cacheOnly)) {
1211 synchronized (THUMBNAIL_LOCK) {
1212 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1213 if (thumbs != null && !thumbs.isEmpty()) {
1214 for (Element thumb : thumbs) {
1215 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1216 if (uri.getScheme().equals("data")) {
1217 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1218 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1219
1220 byte[] data;
1221 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1222 String[] parts2 = parts[0].split(";", 2);
1223 parts[0] = parts2[0];
1224 data = Base64.decode(parts[1], 0);
1225 } else {
1226 data = parts[1].getBytes("UTF-8");
1227 }
1228
1229 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1230 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1231
1232 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1233 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1234 int w = info.getSize().getWidth();
1235 int h = info.getSize().getHeight();
1236 Rect r = rectForSize(w, h, size);
1237 decoder.setTargetSize(r.width(), r.height());
1238 });
1239
1240 if (thumbnail != null && file.getAbsolutePath() != null) {
1241 cache.put(file.getAbsolutePath(), thumbnail);
1242 return thumbnail;
1243 }
1244 } else if (uri.getScheme().equals("cid")) {
1245 Cid cid = BobTransfer.cid(uri);
1246 if (cid == null) continue;
1247 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1248 if (f != null && f.canRead()) {
1249 return getThumbnail(f, res, size, cacheOnly);
1250 }
1251 }
1252 }
1253 }
1254 }
1255 }
1256
1257 return getThumbnail(file, res, size, cacheOnly);
1258 }
1259
1260 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1261 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1262 }
1263
1264 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1265 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1266 Drawable thumbnail = cache.get(cacheKey);
1267 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1268 synchronized (THUMBNAIL_LOCK) {
1269 thumbnail = cache.get(cacheKey);
1270 if (thumbnail != null) {
1271 return thumbnail;
1272 }
1273 final String mime = file.getMimeType();
1274 if ("image/svg+xml".equals(mime)) {
1275 thumbnail = getSVG(file, size);
1276 } else if ("application/pdf".equals(mime)) {
1277 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1278 } else if (mime.startsWith("video/")) {
1279 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1280 } else {
1281 thumbnail = getImagePreview(file, res, size, mime);
1282 if (thumbnail == null) {
1283 throw new FileNotFoundException();
1284 }
1285 }
1286 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1287 }
1288 }
1289 return thumbnail;
1290 }
1291
1292 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1293 final Drawable drawable = getThumbnail(message, res, size, false);
1294 if (drawable == null) return null;
1295 return drawDrawable(drawable);
1296 }
1297
1298 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1299 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1300 if (drawable == null) return null;
1301 return drawDrawable(drawable);
1302 }
1303
1304 public static Rect rectForSize(int w, int h, int size) {
1305 int scalledW;
1306 int scalledH;
1307 if (w <= h) {
1308 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1309 scalledH = size;
1310 } else {
1311 scalledW = size;
1312 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1313 }
1314
1315 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1316
1317 return new Rect(0, 0, scalledW, scalledH);
1318 }
1319
1320 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1321 if (android.os.Build.VERSION.SDK_INT >= 28) {
1322 ImageDecoder.Source source = ImageDecoder.createSource(file);
1323 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1324 int w = info.getSize().getWidth();
1325 int h = info.getSize().getHeight();
1326 Rect r = rectForSize(w, h, size);
1327 decoder.setTargetSize(r.width(), r.height());
1328 });
1329 } else {
1330 BitmapFactory.Options options = new BitmapFactory.Options();
1331 options.inSampleSize = calcSampleSize(file, size);
1332 Bitmap bitmap = null;
1333 try {
1334 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1335 } catch (OutOfMemoryError e) {
1336 options.inSampleSize *= 2;
1337 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1338 }
1339 if (bitmap == null) return null;
1340
1341 bitmap = resize(bitmap, size);
1342 bitmap = rotate(bitmap, getRotation(file));
1343 if (mime.equals("image/gif")) {
1344 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1345 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1346 bitmap.recycle();
1347 bitmap = withGifOverlay;
1348 }
1349 return new BitmapDrawable(res, bitmap);
1350 }
1351 }
1352
1353 public static Bitmap drawDrawable(Drawable drawable) {
1354 if (drawable == null) return null;
1355
1356 Bitmap bitmap = null;
1357
1358 if (drawable instanceof BitmapDrawable) {
1359 bitmap = ((BitmapDrawable) drawable).getBitmap();
1360 if (bitmap != null) return bitmap;
1361 }
1362
1363 Rect bounds = drawable.getBounds();
1364 int width = drawable.getIntrinsicWidth();
1365 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1366 int height = drawable.getIntrinsicHeight();
1367 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1368
1369 if (width < 1) {
1370 Log.w(Config.LOGTAG, "Drawable with no width: " + drawable);
1371 width = 48;
1372 }
1373 if (height < 1) {
1374 Log.w(Config.LOGTAG, "Drawable with no height: " + drawable);
1375 height = 48;
1376 }
1377
1378 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1379 Canvas canvas = new Canvas(bitmap);
1380 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1381 drawable.draw(canvas);
1382 return bitmap;
1383 }
1384
1385 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1386 Bitmap overlay =
1387 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1388 Canvas canvas = new Canvas(bitmap);
1389 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1390 Log.d(
1391 Config.LOGTAG,
1392 "target size overlay: "
1393 + targetSize
1394 + " overlay bitmap size was "
1395 + overlay.getHeight());
1396 float left = (canvas.getWidth() - targetSize) / 2.0f;
1397 float top = (canvas.getHeight() - targetSize) / 2.0f;
1398 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1399 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1400 }
1401
1402 /** https://stackoverflow.com/a/3943023/210897 */
1403 private boolean paintOverlayBlack(final Bitmap bitmap) {
1404 final int h = bitmap.getHeight();
1405 final int w = bitmap.getWidth();
1406 int record = 0;
1407 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1408 for (int x = Math.round(w * IGNORE_PADDING);
1409 x < w - Math.round(w * IGNORE_PADDING);
1410 ++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 --record;
1417 } else {
1418 ++record;
1419 }
1420 }
1421 }
1422 return record < 0;
1423 }
1424
1425 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1426 final int h = bitmap.getHeight();
1427 final int w = bitmap.getWidth();
1428 int white = 0;
1429 for (int y = 0; y < h; ++y) {
1430 for (int x = 0; x < w; ++x) {
1431 int pixel = bitmap.getPixel(x, y);
1432 if ((Color.red(pixel) * 0.299
1433 + Color.green(pixel) * 0.587
1434 + Color.blue(pixel) * 0.114)
1435 > 186) {
1436 white++;
1437 }
1438 }
1439 }
1440 return white > (h * w * 0.4f);
1441 }
1442
1443 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1444 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1445 Bitmap frame;
1446 try {
1447 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1448 frame = metadataRetriever.getFrameAtTime(0);
1449 metadataRetriever.release();
1450 return cropCenterSquare(frame, size);
1451 } catch (Exception e) {
1452 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1453 frame.eraseColor(0xff000000);
1454 return frame;
1455 }
1456 }
1457
1458 private Bitmap getVideoPreview(final File file, final int size) {
1459 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1460 Bitmap frame;
1461 try {
1462 metadataRetriever.setDataSource(file.getAbsolutePath());
1463 frame = metadataRetriever.getFrameAtTime(0);
1464 metadataRetriever.release();
1465 frame = resize(frame, size);
1466 } catch (IOException | RuntimeException e) {
1467 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1468 frame.eraseColor(0xff000000);
1469 }
1470 drawOverlay(
1471 frame,
1472 paintOverlayBlack(frame)
1473 ? R.drawable.play_video_black
1474 : R.drawable.play_video_white,
1475 0.75f);
1476 return frame;
1477 }
1478
1479 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1480 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1481 try {
1482 final ParcelFileDescriptor fileDescriptor =
1483 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1484 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1485 drawOverlay(
1486 rendered,
1487 paintOverlayBlackPdf(rendered)
1488 ? R.drawable.open_pdf_black
1489 : R.drawable.open_pdf_white,
1490 0.75f);
1491 return rendered;
1492 } catch (final IOException | SecurityException e) {
1493 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1494 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1495 placeholder.eraseColor(0xff000000);
1496 return placeholder;
1497 }
1498 }
1499
1500 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1501 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1502 try {
1503 ParcelFileDescriptor fileDescriptor =
1504 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1505 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1506 return cropCenterSquare(bitmap, size);
1507 } catch (Exception e) {
1508 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1509 placeholder.eraseColor(0xff000000);
1510 return placeholder;
1511 }
1512 }
1513
1514 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1515 private Bitmap renderPdfDocument(
1516 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1517 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1518 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1519 final Dimensions dimensions =
1520 scalePdfDimensions(
1521 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1522 final Bitmap rendered =
1523 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1524 rendered.eraseColor(0xffffffff);
1525 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1526 page.close();
1527 pdfRenderer.close();
1528 fileDescriptor.close();
1529 return rendered;
1530 }
1531
1532 public Uri getTakePhotoUri() {
1533 final String filename =
1534 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1535 final File directory;
1536 if (Config.ONLY_INTERNAL_STORAGE) {
1537 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1538 } else {
1539 directory =
1540 new File(
1541 Environment.getExternalStoragePublicDirectory(
1542 Environment.DIRECTORY_DCIM),
1543 "Camera");
1544 }
1545 final File file = new File(directory, filename);
1546 file.getParentFile().mkdirs();
1547 return getUriForFile(mXmppConnectionService, file);
1548 }
1549
1550 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1551
1552 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1553 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1554 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1555 return uncompressAvatar.first;
1556 }
1557 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1558 Log.d(
1559 Config.LOGTAG,
1560 "uncompressed avatar exceeded char limit by "
1561 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1562 }
1563
1564 Bitmap bm = cropCenterSquare(image, size);
1565 if (bm == null) {
1566 return null;
1567 }
1568 if (hasAlpha(bm)) {
1569 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1570 bm.recycle();
1571 bm = cropCenterSquare(image, 96);
1572 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1573 }
1574 return getPepAvatar(bm, format, 100);
1575 }
1576
1577 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1578 try {
1579 if (android.os.Build.VERSION.SDK_INT >= 28) {
1580 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1581 int[] size = new int[] { 0, 0 };
1582 boolean[] animated = new boolean[] { false };
1583 String[] mimeType = new String[] { null };
1584 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1585 mimeType[0] = info.getMimeType();
1586 animated[0] = info.isAnimated();
1587 size[0] = info.getSize().getWidth();
1588 size[1] = info.getSize().getHeight();
1589 });
1590
1591 if (animated[0]) {
1592 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1593 if (avatar != null) return new Pair(avatar, true);
1594 }
1595
1596 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1597 } else {
1598 Bitmap bitmap =
1599 BitmapFactory.decodeStream(
1600 mXmppConnectionService.getContentResolver().openInputStream(uri));
1601 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1602 }
1603 } catch (Exception e) {
1604 try {
1605 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1606 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1607 } catch (Exception e2) {
1608 return null;
1609 }
1610 }
1611 }
1612
1613 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1614 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1615 if (fd.getLength() > 100000) return null; // Too big to use raw file
1616
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
1624 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1625 mDigestOutputStream.flush();
1626 mDigestOutputStream.close();
1627
1628 final Avatar avatar = new Avatar();
1629 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1630 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1631 avatar.type = mimeType;
1632 avatar.width = width;
1633 avatar.height = height;
1634 return avatar;
1635 }
1636
1637 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1638 try {
1639 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1640 Base64OutputStream mBase64OutputStream =
1641 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1642 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1643 DigestOutputStream mDigestOutputStream =
1644 new DigestOutputStream(mBase64OutputStream, digest);
1645 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1646 return null;
1647 }
1648 mDigestOutputStream.flush();
1649 mDigestOutputStream.close();
1650 long chars = mByteArrayOutputStream.size();
1651 if (format != Bitmap.CompressFormat.PNG
1652 && quality >= 50
1653 && chars >= Config.AVATAR_CHAR_LIMIT) {
1654 int q = quality - 2;
1655 Log.d(
1656 Config.LOGTAG,
1657 "avatar char length was " + chars + " reducing quality to " + q);
1658 return getPepAvatar(bitmap, format, q);
1659 }
1660 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1661 final Avatar avatar = new Avatar();
1662 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1663 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1664 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1665 avatar.type = "image/webp";
1666 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1667 avatar.type = "image/jpeg";
1668 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1669 avatar.type = "image/png";
1670 }
1671 avatar.width = bitmap.getWidth();
1672 avatar.height = bitmap.getHeight();
1673 return avatar;
1674 } catch (OutOfMemoryError e) {
1675 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1676 return null;
1677 } catch (Exception e) {
1678 return null;
1679 }
1680 }
1681
1682 public Avatar getStoredPepAvatar(String hash) {
1683 if (hash == null) {
1684 return null;
1685 }
1686 Avatar avatar = new Avatar();
1687 final File file = getAvatarFile(hash);
1688 FileInputStream is = null;
1689 try {
1690 avatar.size = file.length();
1691 BitmapFactory.Options options = new BitmapFactory.Options();
1692 options.inJustDecodeBounds = true;
1693 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1694 is = new FileInputStream(file);
1695 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1696 Base64OutputStream mBase64OutputStream =
1697 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1698 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1699 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1700 byte[] buffer = new byte[4096];
1701 int length;
1702 while ((length = is.read(buffer)) > 0) {
1703 os.write(buffer, 0, length);
1704 }
1705 os.flush();
1706 os.close();
1707 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1708 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1709 avatar.height = options.outHeight;
1710 avatar.width = options.outWidth;
1711 avatar.type = options.outMimeType;
1712 return avatar;
1713 } catch (NoSuchAlgorithmException | IOException e) {
1714 return null;
1715 } finally {
1716 close(is);
1717 }
1718 }
1719
1720 public boolean isAvatarCached(Avatar avatar) {
1721 final File file = getAvatarFile(avatar.getFilename());
1722 return file.exists();
1723 }
1724
1725 public boolean save(final Avatar avatar) {
1726 File file;
1727 if (isAvatarCached(avatar)) {
1728 file = getAvatarFile(avatar.getFilename());
1729 avatar.size = file.length();
1730 } else {
1731 file =
1732 new File(
1733 mXmppConnectionService.getCacheDir().getAbsolutePath()
1734 + "/"
1735 + UUID.randomUUID().toString());
1736 if (file.getParentFile().mkdirs()) {
1737 Log.d(Config.LOGTAG, "created cache directory");
1738 }
1739 OutputStream os = null;
1740 try {
1741 if (!file.createNewFile()) {
1742 Log.d(
1743 Config.LOGTAG,
1744 "unable to create temporary file " + file.getAbsolutePath());
1745 }
1746 os = new FileOutputStream(file);
1747 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1748 digest.reset();
1749 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1750 final byte[] bytes = avatar.getImageAsBytes();
1751 mDigestOutputStream.write(bytes);
1752 mDigestOutputStream.flush();
1753 mDigestOutputStream.close();
1754 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1755 if (sha1sum.equals(avatar.sha1sum)) {
1756 final File outputFile = getAvatarFile(avatar.getFilename());
1757 if (outputFile.getParentFile().mkdirs()) {
1758 Log.d(Config.LOGTAG, "created avatar directory");
1759 }
1760 final File avatarFile = getAvatarFile(avatar.getFilename());
1761 if (!file.renameTo(avatarFile)) {
1762 Log.d(
1763 Config.LOGTAG,
1764 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1765 return false;
1766 }
1767 } else {
1768 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1769 if (!file.delete()) {
1770 Log.d(Config.LOGTAG, "unable to delete temporary file");
1771 }
1772 return false;
1773 }
1774 avatar.size = bytes.length;
1775 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1776 return false;
1777 } finally {
1778 close(os);
1779 }
1780 }
1781 return true;
1782 }
1783
1784 public void deleteHistoricAvatarPath() {
1785 delete(getHistoricAvatarPath());
1786 }
1787
1788 private void delete(final File file) {
1789 if (file.isDirectory()) {
1790 final File[] files = file.listFiles();
1791 if (files != null) {
1792 for (final File f : files) {
1793 delete(f);
1794 }
1795 }
1796 }
1797 if (file.delete()) {
1798 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1799 }
1800 }
1801
1802 private File getHistoricAvatarPath() {
1803 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1804 }
1805
1806 public File getAvatarFile(String avatar) {
1807 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1808 }
1809
1810 public Uri getAvatarUri(String avatar) {
1811 return Uri.fromFile(getAvatarFile(avatar));
1812 }
1813
1814 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1815 if (android.os.Build.VERSION.SDK_INT >= 28) {
1816 try {
1817 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1818 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1819 int w = info.getSize().getWidth();
1820 int h = info.getSize().getHeight();
1821 Rect r = rectForSize(w, h, size);
1822 decoder.setTargetSize(r.width(), r.height());
1823
1824 int newSize = Math.min(r.width(), r.height());
1825 int left = (r.width() - newSize) / 2;
1826 int top = (r.height() - newSize) / 2;
1827 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1828 });
1829 } catch (final IOException e) {
1830 return getSVGSquare(image, size);
1831 }
1832 } else {
1833 Bitmap bitmap = cropCenterSquare(image, size);
1834 return bitmap == null ? null : new BitmapDrawable(bitmap);
1835 }
1836 }
1837
1838 public Bitmap cropCenterSquare(Uri image, int size) {
1839 if (image == null) {
1840 return null;
1841 }
1842 InputStream is = null;
1843 try {
1844 BitmapFactory.Options options = new BitmapFactory.Options();
1845 options.inSampleSize = calcSampleSize(image, size);
1846 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1847 if (is == null) {
1848 return null;
1849 }
1850 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1851 if (input == null) {
1852 return null;
1853 } else {
1854 input = rotate(input, getRotation(image));
1855 return cropCenterSquare(input, size);
1856 }
1857 } catch (FileNotFoundException | SecurityException e) {
1858 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1859 return null;
1860 } finally {
1861 close(is);
1862 }
1863 }
1864
1865 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1866 if (image == null) {
1867 return null;
1868 }
1869 InputStream is = null;
1870 try {
1871 BitmapFactory.Options options = new BitmapFactory.Options();
1872 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1873 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1874 if (is == null) {
1875 return null;
1876 }
1877 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1878 if (source == null) {
1879 return null;
1880 }
1881 int sourceWidth = source.getWidth();
1882 int sourceHeight = source.getHeight();
1883 float xScale = (float) newWidth / sourceWidth;
1884 float yScale = (float) newHeight / sourceHeight;
1885 float scale = Math.max(xScale, yScale);
1886 float scaledWidth = scale * sourceWidth;
1887 float scaledHeight = scale * sourceHeight;
1888 float left = (newWidth - scaledWidth) / 2;
1889 float top = (newHeight - scaledHeight) / 2;
1890
1891 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1892 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1893 Canvas canvas = new Canvas(dest);
1894 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1895 if (source.isRecycled()) {
1896 source.recycle();
1897 }
1898 return dest;
1899 } catch (SecurityException e) {
1900 return null; // android 6.0 with revoked permissions for example
1901 } catch (FileNotFoundException e) {
1902 return null;
1903 } finally {
1904 close(is);
1905 }
1906 }
1907
1908 public Bitmap cropCenterSquare(Bitmap input, int size) {
1909 int w = input.getWidth();
1910 int h = input.getHeight();
1911
1912 float scale = Math.max((float) size / h, (float) size / w);
1913
1914 float outWidth = scale * w;
1915 float outHeight = scale * h;
1916 float left = (size - outWidth) / 2;
1917 float top = (size - outHeight) / 2;
1918 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1919
1920 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1921 Canvas canvas = new Canvas(output);
1922 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1923 if (!input.isRecycled()) {
1924 input.recycle();
1925 }
1926 return output;
1927 }
1928
1929 private int calcSampleSize(Uri image, int size)
1930 throws FileNotFoundException, SecurityException {
1931 final BitmapFactory.Options options = new BitmapFactory.Options();
1932 options.inJustDecodeBounds = true;
1933 final InputStream inputStream =
1934 mXmppConnectionService.getContentResolver().openInputStream(image);
1935 BitmapFactory.decodeStream(inputStream, null, options);
1936 close(inputStream);
1937 return calcSampleSize(options, size);
1938 }
1939
1940 public void updateFileParams(Message message) {
1941 updateFileParams(message, null);
1942 }
1943
1944 public void updateFileParams(final Message message, final String url) {
1945 updateFileParams(message, url, true);
1946 }
1947
1948 public void updateFileParams(final Message message, String url, boolean updateCids) {
1949 final boolean encrypted =
1950 message.getEncryption() == Message.ENCRYPTION_PGP
1951 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1952 final DownloadableFile file = getFile(message);
1953 final String mime = file.getMimeType();
1954 final boolean privateMessage = message.isPrivateMessage();
1955 final boolean image =
1956 message.getType() == Message.TYPE_IMAGE
1957 || (mime != null && mime.startsWith("image/"));
1958 Message.FileParams fileParams = message.getFileParams();
1959 if (fileParams == null) fileParams = new Message.FileParams();
1960 Cid[] cids = new Cid[0];
1961 try {
1962 cids = calculateCids(new FileInputStream(file));
1963 fileParams.setCids(List.of(cids));
1964 } catch (final IOException | NoSuchAlgorithmException e) { }
1965 if (url == null) {
1966 for (Cid cid : cids) {
1967 url = mXmppConnectionService.getUrlForCid(cid);
1968 if (url != null) {
1969 fileParams.url = url;
1970 break;
1971 }
1972 }
1973 } else {
1974 fileParams.url = url;
1975 }
1976 if (fileParams.getName() == null) fileParams.setName(file.getName());
1977 fileParams.setMediaType(mime);
1978 if (encrypted && !file.exists()) {
1979 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
1980 final DownloadableFile encryptedFile = getFile(message, false);
1981 if (encryptedFile.canRead()) fileParams.size = encryptedFile.getSize();
1982 } else {
1983 Log.d(Config.LOGTAG, "running updateFileParams");
1984 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
1985 final boolean video = mime != null && mime.startsWith("video/");
1986 final boolean audio = mime != null && mime.startsWith("audio/");
1987 final boolean pdf = "application/pdf".equals(mime);
1988 if (file.canRead()) fileParams.size = file.getSize();
1989 if (ambiguous) {
1990 try {
1991 final Dimensions dimensions = getVideoDimensions(file);
1992 if (dimensions.valid()) {
1993 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
1994 fileParams.width = dimensions.width;
1995 fileParams.height = dimensions.height;
1996 } else {
1997 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1998 fileParams.runtime = getMediaRuntime(file);
1999 }
2000 } catch (final IOException | NotAVideoFile e) {
2001 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
2002 fileParams.runtime = getMediaRuntime(file);
2003 }
2004 } else if (image || video || pdf) {
2005 try {
2006 final Dimensions dimensions;
2007 if (video) {
2008 dimensions = getVideoDimensions(file);
2009 } else if (pdf) {
2010 dimensions = getPdfDocumentDimensions(file);
2011 } else if ("image/svg+xml".equals(mime)) {
2012 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2013 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
2014 } else {
2015 dimensions = getImageDimensions(file);
2016 }
2017 if (dimensions.valid()) {
2018 fileParams.width = dimensions.width;
2019 fileParams.height = dimensions.height;
2020 }
2021 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
2022 Log.d(
2023 Config.LOGTAG,
2024 "file with mime type " + file.getMimeType() + " was not a video file");
2025 // fall threw
2026 }
2027 } else if (audio) {
2028 fileParams.runtime = getMediaRuntime(file);
2029 }
2030 try {
2031 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
2032 if (thumb != null) {
2033 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
2034 byte[] rgba = new byte[pixels.length * 4];
2035 try {
2036 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2037 } catch (final IllegalStateException e) {
2038 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2039 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2040 softThumb.recycle();
2041 }
2042 for (int i = 0; i < pixels.length; i++) {
2043 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2044 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2045 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2046 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2047 }
2048 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2049 }
2050 } catch (final IOException e) { }
2051 }
2052 message.setFileParams(fileParams);
2053 message.setDeleted(false);
2054 message.setType(
2055 privateMessage
2056 ? Message.TYPE_PRIVATE_FILE
2057 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2058
2059 if (updateCids) {
2060 try {
2061 for (int i = 0; i < cids.length; i++) {
2062 mXmppConnectionService.saveCid(cids[i], file);
2063 }
2064 } catch (XmppConnectionService.BlockedMediaException e) { }
2065 }
2066 }
2067
2068 private int getMediaRuntime(final File file) {
2069 try {
2070 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2071 mediaMetadataRetriever.setDataSource(file.toString());
2072 final String value =
2073 mediaMetadataRetriever.extractMetadata(
2074 MediaMetadataRetriever.METADATA_KEY_DURATION);
2075 if (Strings.isNullOrEmpty(value)) {
2076 return 0;
2077 }
2078 return Integer.parseInt(value);
2079 } catch (final Exception e) {
2080 return 0;
2081 }
2082 }
2083
2084 private Dimensions getImageDimensions(File file) {
2085 final BitmapFactory.Options options = new BitmapFactory.Options();
2086 options.inJustDecodeBounds = true;
2087 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2088 final int rotation = getRotation(file);
2089 final boolean rotated = rotation == 90 || rotation == 270;
2090 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2091 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2092 return new Dimensions(imageHeight, imageWidth);
2093 }
2094
2095 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2096 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2097 try {
2098 metadataRetriever.setDataSource(file.getAbsolutePath());
2099 } catch (RuntimeException e) {
2100 throw new NotAVideoFile(e);
2101 }
2102 return getVideoDimensions(metadataRetriever);
2103 }
2104
2105 private Dimensions getPdfDocumentDimensions(final File file) {
2106 final ParcelFileDescriptor fileDescriptor;
2107 try {
2108 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2109 if (fileDescriptor == null) {
2110 return new Dimensions(0, 0);
2111 }
2112 } catch (final FileNotFoundException e) {
2113 return new Dimensions(0, 0);
2114 }
2115 try {
2116 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2117 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2118 final int height = page.getHeight();
2119 final int width = page.getWidth();
2120 page.close();
2121 pdfRenderer.close();
2122 return scalePdfDimensions(new Dimensions(height, width));
2123 } catch (final IOException | SecurityException e) {
2124 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2125 return new Dimensions(0, 0);
2126 }
2127 }
2128
2129 private Dimensions scalePdfDimensions(Dimensions in) {
2130 final DisplayMetrics displayMetrics =
2131 mXmppConnectionService.getResources().getDisplayMetrics();
2132 final int target = (int) (displayMetrics.density * 288);
2133 return scalePdfDimensions(in, target, true);
2134 }
2135
2136 private static Dimensions scalePdfDimensions(
2137 final Dimensions in, final int target, final boolean fit) {
2138 final int w, h;
2139 if (fit == (in.width <= in.height)) {
2140 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2141 h = target;
2142 } else {
2143 w = target;
2144 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2145 }
2146 return new Dimensions(h, w);
2147 }
2148
2149 public Drawable getAvatar(String avatar, int size) {
2150 if (avatar == null) {
2151 return null;
2152 }
2153
2154 if (android.os.Build.VERSION.SDK_INT >= 28) {
2155 try {
2156 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2157 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2158 int w = info.getSize().getWidth();
2159 int h = info.getSize().getHeight();
2160 Rect r = rectForSize(w, h, size);
2161 decoder.setTargetSize(r.width(), r.height());
2162
2163 int newSize = Math.min(r.width(), r.height());
2164 int left = (r.width() - newSize) / 2;
2165 int top = (r.height() - newSize) / 2;
2166 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2167 });
2168 } catch (final IOException e) {
2169 return getSVGSquare(getAvatarUri(avatar), size);
2170 }
2171 } else {
2172 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2173 return bm == null ? null : new BitmapDrawable(bm);
2174 }
2175 }
2176
2177 public Drawable getSVGSquare(Uri uri, int size) {
2178 try {
2179 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2180 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2181
2182 float w = svg.getDocumentWidth();
2183 float h = svg.getDocumentHeight();
2184 float scale = Math.max((float) size / h, (float) size / w);
2185 float outWidth = scale * w;
2186 float outHeight = scale * h;
2187 float left = (size - outWidth) / 2;
2188 float top = (size - outHeight) / 2;
2189 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2190 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2191 svg.setDocumentWidth("100%");
2192 svg.setDocumentHeight("100%");
2193
2194 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2195 Canvas canvas = new Canvas(output);
2196 svg.renderToCanvas(canvas, target);
2197
2198 return new SVGDrawable(output);
2199 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2200 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2201 return null;
2202 }
2203 }
2204
2205 public Drawable getSVG(File file, int size) {
2206 try {
2207 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2208 return drawSVG(svg, size);
2209 } catch (final IOException | SVGParseException | IllegalArgumentException e) {
2210 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2211 return null;
2212 }
2213 }
2214
2215 public Drawable drawSVG(SVG svg, int size) {
2216 try {
2217 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.LETTERBOX);
2218
2219 float w = svg.getDocumentWidth();
2220 float h = svg.getDocumentHeight();
2221 Rect r = rectForSize(w < 1 ? size : (int) w, h < 1 ? size : (int) h, size);
2222 if (svg.getDocumentViewBox() == null) svg.setDocumentViewBox(0, 0, w, h);
2223 svg.setDocumentWidth("100%");
2224 svg.setDocumentHeight("100%");
2225
2226 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2227 Canvas canvas = new Canvas(output);
2228 svg.renderToCanvas(canvas);
2229
2230 return new SVGDrawable(output);
2231 } catch (final SVGParseException e) {
2232 Log.w(Config.LOGTAG, "Could not parse SVG: " + e);
2233 return null;
2234 }
2235 }
2236
2237 private static class Dimensions {
2238 public final int width;
2239 public final int height;
2240
2241 Dimensions(int height, int width) {
2242 this.width = width;
2243 this.height = height;
2244 }
2245
2246 public int getMin() {
2247 return Math.min(width, height);
2248 }
2249
2250 public boolean valid() {
2251 return width > 0 && height > 0;
2252 }
2253 }
2254
2255 private static class NotAVideoFile extends Exception {
2256 public NotAVideoFile(Throwable t) {
2257 super(t);
2258 }
2259
2260 public NotAVideoFile() {
2261 super();
2262 }
2263 }
2264
2265 public static class ImageCompressionException extends Exception {
2266
2267 ImageCompressionException(String message) {
2268 super(message);
2269 }
2270 }
2271
2272 public static class FileCopyException extends Exception {
2273 private final int resId;
2274
2275 private FileCopyException(@StringRes int resId) {
2276 this.resId = resId;
2277 }
2278
2279 public @StringRes int getResId() {
2280 return resId;
2281 }
2282 }
2283
2284 public static class SVGDrawable extends BitmapDrawable {
2285 public SVGDrawable(Bitmap bm) { super(bm); }
2286 }
2287}