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 updateMediaScanner(file);
536 return true;
537 } else {
538 return false;
539 }
540 }
541
542 public DownloadableFile getFile(Message message) {
543 return getFile(message, true);
544 }
545
546 public DownloadableFile getFileForPath(String path) {
547 return getFileForPath(
548 path,
549 MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
550 }
551
552 private DownloadableFile getFileForPath(final String path, final String mime) {
553 if (path.startsWith("/")) {
554 return new DownloadableFile(path);
555 } else {
556 return getLegacyFileForFilename(path, mime);
557 }
558 }
559
560 public DownloadableFile getLegacyFileForFilename(final String filename, final String mime) {
561 if (Strings.isNullOrEmpty(mime)) {
562 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
563 } else if (mime.startsWith("image/")) {
564 return new DownloadableFile(getLegacyStorageLocation("Images"), filename);
565 } else if (mime.startsWith("video/")) {
566 return new DownloadableFile(getLegacyStorageLocation("Videos"), filename);
567 } else {
568 return new DownloadableFile(getLegacyStorageLocation("Files"), filename);
569 }
570 }
571
572 public boolean isInternalFile(final File file) {
573 final File internalFile = getFileForPath(file.getName());
574 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
575 }
576
577 public DownloadableFile getFile(Message message, boolean decrypted) {
578 final boolean encrypted =
579 !decrypted
580 && (message.getEncryption() == Message.ENCRYPTION_PGP
581 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
582 String path = message.getRelativeFilePath();
583 if (path == null) {
584 path = message.getUuid();
585 }
586 final DownloadableFile file = getFileForPath(path, message.getMimeType());
587 if (encrypted) {
588 return new DownloadableFile(
589 mXmppConnectionService.getCacheDir(),
590 String.format("%s.%s", file.getName(), "pgp"));
591 } else {
592 return file;
593 }
594 }
595
596 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
597 final List<Attachment> attachments = new ArrayList<>();
598 for (final DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
599 final String mime =
600 MimeUtils.guessMimeTypeFromExtension(
601 MimeUtils.extractRelevantExtension(relativeFilePath.path));
602 final File file = getFileForPath(relativeFilePath.path, mime);
603 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
604 }
605 return attachments;
606 }
607
608 private File getLegacyStorageLocation(final String type) {
609 if (Config.ONLY_INTERNAL_STORAGE) {
610 return new File(mXmppConnectionService.getFilesDir(), type);
611 } else {
612 final File appDirectory =
613 new File(
614 Environment.getExternalStorageDirectory(),
615 mXmppConnectionService.getString(R.string.app_name));
616 final File appMediaDirectory = new File(appDirectory, "Media");
617 final String locationName =
618 String.format(
619 "%s %s", mXmppConnectionService.getString(R.string.app_name), type);
620 return new File(appMediaDirectory, locationName);
621 }
622 }
623
624 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
625 int w = originalBitmap.getWidth();
626 int h = originalBitmap.getHeight();
627 if (w <= 0 || h <= 0) {
628 throw new IOException("Decoded bitmap reported bounds smaller 0");
629 } else if (Math.max(w, h) > size) {
630 int scalledW;
631 int scalledH;
632 if (w <= h) {
633 scalledW = Math.max((int) (w / ((double) h / size)), 1);
634 scalledH = size;
635 } else {
636 scalledW = size;
637 scalledH = Math.max((int) (h / ((double) w / size)), 1);
638 }
639 final Bitmap result =
640 Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
641 if (!originalBitmap.isRecycled()) {
642 originalBitmap.recycle();
643 }
644 return result;
645 } else {
646 return originalBitmap;
647 }
648 }
649
650 public boolean useImageAsIs(final Uri uri) {
651 final String path = getOriginalPath(uri);
652 if (path == null || isPathBlacklisted(path)) {
653 return false;
654 }
655 final File file = new File(path);
656 long size = file.length();
657 if (size == 0
658 || size
659 >= mXmppConnectionService
660 .getResources()
661 .getInteger(R.integer.auto_accept_filesize)) {
662 return false;
663 }
664 BitmapFactory.Options options = new BitmapFactory.Options();
665 options.inJustDecodeBounds = true;
666 try {
667 for (Cid cid : calculateCids(uri)) {
668 if (mXmppConnectionService.getUrlForCid(cid) != null) return true;
669 }
670 final InputStream inputStream =
671 mXmppConnectionService.getContentResolver().openInputStream(uri);
672 BitmapFactory.decodeStream(inputStream, null, options);
673 close(inputStream);
674 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
675 return false;
676 }
677 return (options.outWidth <= Config.IMAGE_SIZE
678 && options.outHeight <= Config.IMAGE_SIZE
679 && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
680 } catch (final IOException e) {
681 Log.d(Config.LOGTAG, "unable to get image dimensions", e);
682 return false;
683 }
684 }
685
686 public String getOriginalPath(Uri uri) {
687 return FileUtils.getPath(mXmppConnectionService, uri);
688 }
689
690 public void copyFileToDocumentFile(Context ctx, File file, DocumentFile df) throws FileCopyException {
691 Log.d(
692 Config.LOGTAG,
693 "copy file (" + file + ") to " + df);
694 try (final InputStream is = new FileInputStream(file);
695 final OutputStream os =
696 mXmppConnectionService.getContentResolver().openOutputStream(df.getUri())) {
697 if (is == null) {
698 throw new FileCopyException(R.string.error_file_not_found);
699 }
700 try {
701 ByteStreams.copy(is, os);
702 os.flush();
703 } catch (IOException e) {
704 throw new FileWriterException(file);
705 }
706 } catch (final FileNotFoundException e) {
707 throw new FileCopyException(R.string.error_file_not_found);
708 } catch (final FileWriterException e) {
709 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
710 } catch (final SecurityException | IllegalStateException e) {
711 throw new FileCopyException(R.string.error_security_exception);
712 } catch (final IOException e) {
713 throw new FileCopyException(R.string.error_io_exception);
714 }
715 }
716
717 private InputStream openInputStream(Uri uri) throws IOException {
718 if (uri != null && "data".equals(uri.getScheme())) {
719 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
720 byte[] data;
721 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
722 String[] parts2 = parts[0].split(";", 2);
723 parts[0] = parts2[0];
724 data = Base64.decode(parts[1], 0);
725 } else {
726 try {
727 data = parts[1].getBytes("UTF-8");
728 } catch (final IOException e) {
729 data = new byte[0];
730 }
731 }
732 return new ByteArrayInputStream(data);
733 }
734 return mXmppConnectionService.getContentResolver().openInputStream(uri);
735 }
736
737 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
738 Log.d(
739 Config.LOGTAG,
740 "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
741 file.getParentFile().mkdirs();
742 try {
743 file.createNewFile();
744 } catch (IOException e) {
745 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
746 }
747 try (final OutputStream os = new FileOutputStream(file);
748 final InputStream is = openInputStream(uri)) {
749 if (is == null) {
750 throw new FileCopyException(R.string.error_file_not_found);
751 }
752 try {
753 ByteStreams.copy(is, os);
754 } catch (IOException e) {
755 throw new FileWriterException(file);
756 }
757 try {
758 os.flush();
759 } catch (IOException e) {
760 throw new FileWriterException(file);
761 }
762 } catch (final FileNotFoundException e) {
763 cleanup(file);
764 throw new FileCopyException(R.string.error_file_not_found);
765 } catch (final FileWriterException e) {
766 cleanup(file);
767 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
768 } catch (final SecurityException | IllegalStateException e) {
769 cleanup(file);
770 throw new FileCopyException(R.string.error_security_exception);
771 } catch (final IOException e) {
772 cleanup(file);
773 throw new FileCopyException(R.string.error_io_exception);
774 }
775 }
776
777 public void copyFileToPrivateStorage(Message message, Uri uri, String type)
778 throws FileCopyException {
779 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
780 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
781 String extension = MimeUtils.guessExtensionFromMimeType(mime);
782 if (extension == null) {
783 Log.d(Config.LOGTAG, "extension from mime type was null");
784 extension = getExtensionFromUri(uri);
785 }
786 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
787 extension = "oga";
788 }
789
790 try {
791 setupRelativeFilePath(message, uri, extension);
792 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
793 final String name = getDisplayNameFromUri(uri);
794 if (name != null) {
795 message.getFileParams().setName(name);
796 }
797 } catch (final XmppConnectionService.BlockedMediaException e) {
798 message.setRelativeFilePath(null);
799 message.setDeleted(true);
800 }
801 }
802
803 private String getDisplayNameFromUri(final Uri uri) {
804 final String[] projection = {OpenableColumns.DISPLAY_NAME};
805 String filename = null;
806 try (final Cursor cursor =
807 mXmppConnectionService
808 .getContentResolver()
809 .query(uri, projection, null, null, null)) {
810 if (cursor != null && cursor.moveToFirst()) {
811 filename = cursor.getString(0);
812 }
813 } catch (final Exception e) {
814 filename = null;
815 }
816 return filename;
817 }
818
819 private String getExtensionFromUri(final Uri uri) {
820 final String[] projection = {MediaStore.MediaColumns.DATA};
821 String filename = null;
822 try (final Cursor cursor =
823 mXmppConnectionService
824 .getContentResolver()
825 .query(uri, projection, null, null, null)) {
826 if (cursor != null && cursor.moveToFirst()) {
827 filename = cursor.getString(0);
828 }
829 } catch (final Exception e) {
830 filename = null;
831 }
832 if (filename == null) {
833 final List<String> segments = uri.getPathSegments();
834 if (segments.size() > 0) {
835 filename = segments.get(segments.size() - 1);
836 }
837 }
838 final int pos = filename == null ? -1 : filename.lastIndexOf('.');
839 return pos > 0 ? filename.substring(pos + 1) : null;
840 }
841
842 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize)
843 throws FileCopyException, ImageCompressionException {
844 final File parent = file.getParentFile();
845 if (parent != null && parent.mkdirs()) {
846 Log.d(Config.LOGTAG, "created parent directory");
847 }
848 InputStream is = null;
849 OutputStream os = null;
850 try {
851 if (!file.exists() && !file.createNewFile()) {
852 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
853 }
854 is = mXmppConnectionService.getContentResolver().openInputStream(image);
855 if (is == null) {
856 throw new FileCopyException(R.string.error_not_an_image_file);
857 }
858 final Bitmap originalBitmap;
859 final BitmapFactory.Options options = new BitmapFactory.Options();
860 final int inSampleSize = (int) Math.pow(2, sampleSize);
861 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
862 options.inSampleSize = inSampleSize;
863 originalBitmap = BitmapFactory.decodeStream(is, null, options);
864 is.close();
865 if (originalBitmap == null) {
866 throw new ImageCompressionException("Source file was not an image");
867 }
868 if (!"image/jpeg".equals(options.outMimeType) && hasAlpha(originalBitmap)) {
869 originalBitmap.recycle();
870 throw new ImageCompressionException("Source file had alpha channel");
871 }
872 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
873 final int rotation = getRotation(image);
874 scaledBitmap = rotate(scaledBitmap, rotation);
875 boolean targetSizeReached = false;
876 int quality = Config.IMAGE_QUALITY;
877 final int imageMaxSize =
878 mXmppConnectionService
879 .getResources()
880 .getInteger(R.integer.auto_accept_filesize);
881 while (!targetSizeReached) {
882 os = new FileOutputStream(file);
883 Log.d(Config.LOGTAG, "compressing image with quality " + quality);
884 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
885 if (!success) {
886 throw new FileCopyException(R.string.error_compressing_image);
887 }
888 os.flush();
889 final long fileSize = file.length();
890 Log.d(Config.LOGTAG, "achieved file size of " + fileSize);
891 targetSizeReached = fileSize <= imageMaxSize || quality <= 50;
892 quality -= 5;
893 }
894 scaledBitmap.recycle();
895 } catch (final FileNotFoundException e) {
896 cleanup(file);
897 throw new FileCopyException(R.string.error_file_not_found);
898 } catch (final IOException e) {
899 cleanup(file);
900 throw new FileCopyException(R.string.error_io_exception);
901 } catch (SecurityException e) {
902 cleanup(file);
903 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
904 } catch (final OutOfMemoryError e) {
905 ++sampleSize;
906 if (sampleSize <= 3) {
907 copyImageToPrivateStorage(file, image, sampleSize);
908 } else {
909 throw new FileCopyException(R.string.error_out_of_memory);
910 }
911 } finally {
912 close(os);
913 close(is);
914 }
915 }
916
917 private static void cleanup(final File file) {
918 try {
919 file.delete();
920 } catch (Exception e) {
921
922 }
923 }
924
925 public void copyImageToPrivateStorage(File file, Uri image)
926 throws FileCopyException, ImageCompressionException {
927 Log.d(
928 Config.LOGTAG,
929 "copy image ("
930 + image.toString()
931 + ") to private storage "
932 + file.getAbsolutePath());
933 copyImageToPrivateStorage(file, image, 0);
934 }
935
936 public void copyImageToPrivateStorage(Message message, Uri image)
937 throws FileCopyException, ImageCompressionException {
938 final String filename;
939 switch (Config.IMAGE_FORMAT) {
940 case JPEG:
941 filename = String.format("%s.%s", message.getUuid(), "jpg");
942 break;
943 case PNG:
944 filename = String.format("%s.%s", message.getUuid(), "png");
945 break;
946 case WEBP:
947 filename = String.format("%s.%s", message.getUuid(), "webp");
948 break;
949 default:
950 throw new IllegalStateException("Unknown image format");
951 }
952 setupRelativeFilePath(message, filename);
953 final File tmp = getFile(message);
954 copyImageToPrivateStorage(tmp, image);
955 final String extension = MimeUtils.extractRelevantExtension(filename);
956 try {
957 setupRelativeFilePath(message, new FileInputStream(tmp), extension);
958 } catch (final FileNotFoundException e) {
959 throw new FileCopyException(R.string.error_file_not_found);
960 } catch (final IOException e) {
961 throw new FileCopyException(R.string.error_io_exception);
962 } catch (final XmppConnectionService.BlockedMediaException e) {
963 tmp.delete();
964 message.setRelativeFilePath(null);
965 message.setDeleted(true);
966 return;
967 }
968 tmp.renameTo(getFile(message));
969 updateFileParams(message, null, false);
970 }
971
972 public void setupRelativeFilePath(final Message message, final Uri uri, final String extension) throws FileCopyException, XmppConnectionService.BlockedMediaException {
973 try {
974 setupRelativeFilePath(message, openInputStream(uri), extension);
975 } catch (final FileNotFoundException e) {
976 throw new FileCopyException(R.string.error_file_not_found);
977 } catch (final IOException e) {
978 throw new FileCopyException(R.string.error_io_exception);
979 }
980 }
981
982 public Cid[] calculateCids(final Uri uri) throws IOException {
983 return calculateCids(mXmppConnectionService.getContentResolver().openInputStream(uri));
984 }
985
986 public Cid[] calculateCids(final InputStream is) throws IOException {
987 try {
988 return CryptoHelper.cid(is, new String[]{"SHA-256", "SHA-1", "SHA-512"});
989 } catch (final NoSuchAlgorithmException e) {
990 throw new AssertionError(e);
991 }
992 }
993
994 public void setupRelativeFilePath(final Message message, final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
995 message.setRelativeFilePath(getStorageLocation(is, extension).getAbsolutePath());
996 }
997
998 public void setupRelativeFilePath(final Message message, final String filename) {
999 final String extension = MimeUtils.extractRelevantExtension(filename);
1000 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1001 setupRelativeFilePath(message, filename, mime);
1002 }
1003
1004 public File getStorageLocation(final InputStream is, final String extension) throws IOException, XmppConnectionService.BlockedMediaException {
1005 final String mime = MimeUtils.guessMimeTypeFromExtension(extension);
1006 Cid[] cids = calculateCids(is);
1007 String base = cids[0].toString();
1008
1009 File file = null;
1010 while (file == null || (file.exists() && !file.canRead())) {
1011 file = getStorageLocation(String.format("%s.%s", base, extension), mime);
1012 base += "_";
1013 }
1014 for (int i = 0; i < cids.length; i++) {
1015 mXmppConnectionService.saveCid(cids[i], file);
1016 }
1017 return file;
1018 }
1019
1020 public File getStorageLocation(final String filename, final String mime) {
1021 final File parentDirectory;
1022 if (Strings.isNullOrEmpty(mime)) {
1023 parentDirectory =
1024 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1025 } else if (mime.startsWith("image/")) {
1026 parentDirectory =
1027 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
1028 } else if (mime.startsWith("video/")) {
1029 parentDirectory =
1030 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
1031 } else if (MediaAdapter.DOCUMENT_MIMES.contains(mime)) {
1032 parentDirectory =
1033 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
1034 } else {
1035 parentDirectory =
1036 Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
1037 }
1038 final File appDirectory =
1039 new File(parentDirectory, mXmppConnectionService.getString(R.string.app_name));
1040 return new File(appDirectory, filename);
1041 }
1042
1043 public static boolean inConversationsDirectory(final Context context, String path) {
1044 final File fileDirectory = new File(path).getParentFile();
1045 for (final String type : STORAGE_TYPES) {
1046 final File typeDirectory =
1047 new File(
1048 Environment.getExternalStoragePublicDirectory(type),
1049 context.getString(R.string.app_name));
1050 if (typeDirectory.equals(fileDirectory)) {
1051 return true;
1052 }
1053 }
1054 return false;
1055 }
1056
1057 public void setupRelativeFilePath(
1058 final Message message, final String filename, final String mime) {
1059 final File file = getStorageLocation(filename, mime);
1060 message.setRelativeFilePath(file.getAbsolutePath());
1061 }
1062
1063 public boolean unusualBounds(final Uri image) {
1064 try {
1065 final BitmapFactory.Options options = new BitmapFactory.Options();
1066 options.inJustDecodeBounds = true;
1067 final InputStream inputStream =
1068 mXmppConnectionService.getContentResolver().openInputStream(image);
1069 BitmapFactory.decodeStream(inputStream, null, options);
1070 close(inputStream);
1071 float ratio = (float) options.outHeight / options.outWidth;
1072 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
1073 } catch (final Exception e) {
1074 Log.w(Config.LOGTAG, "unable to detect image bounds", e);
1075 return false;
1076 }
1077 }
1078
1079 private int getRotation(final File file) {
1080 try (final InputStream inputStream = new FileInputStream(file)) {
1081 return getRotation(inputStream);
1082 } catch (Exception e) {
1083 return 0;
1084 }
1085 }
1086
1087 private int getRotation(final Uri image) {
1088 try (final InputStream is =
1089 mXmppConnectionService.getContentResolver().openInputStream(image)) {
1090 return is == null ? 0 : getRotation(is);
1091 } catch (final Exception e) {
1092 return 0;
1093 }
1094 }
1095
1096 private static int getRotation(final InputStream inputStream) throws IOException {
1097 final ExifInterface exif = new ExifInterface(inputStream);
1098 final int orientation =
1099 exif.getAttributeInt(
1100 ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
1101 switch (orientation) {
1102 case ExifInterface.ORIENTATION_ROTATE_180:
1103 return 180;
1104 case ExifInterface.ORIENTATION_ROTATE_90:
1105 return 90;
1106 case ExifInterface.ORIENTATION_ROTATE_270:
1107 return 270;
1108 default:
1109 return 0;
1110 }
1111 }
1112
1113 public BitmapDrawable getFallbackThumbnail(final Message message, int size, boolean cacheOnly) {
1114 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1115 if (thumbs != null && !thumbs.isEmpty()) {
1116 for (Element thumb : thumbs) {
1117 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1118 if (uri.getScheme().equals("data")) {
1119 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1120
1121 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1122 BitmapDrawable cached = (BitmapDrawable) cache.get(parts[1]);
1123 if (cached != null || cacheOnly) return cached;
1124
1125 byte[] data;
1126 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1127 String[] parts2 = parts[0].split(";", 2);
1128 parts[0] = parts2[0];
1129 data = Base64.decode(parts[1], 0);
1130 } else {
1131 try {
1132 data = parts[1].getBytes("UTF-8");
1133 } catch (final IOException e) {
1134 data = new byte[0];
1135 }
1136 }
1137
1138 if (parts[0].equals("image/blurhash")) {
1139 int width = message.getFileParams().width;
1140 if (width < 1 && thumb.getAttribute("width") != null) width = Integer.parseInt(thumb.getAttribute("width"));
1141 if (width < 1) width = 1920;
1142
1143 int height = message.getFileParams().height;
1144 if (height < 1 && thumb.getAttribute("height") != null) height = Integer.parseInt(thumb.getAttribute("height"));
1145 if (height < 1) height = 1080;
1146 Rect r = rectForSize(width, height, size);
1147
1148 Bitmap blurhash = BlurHashDecoder.INSTANCE.decode(parts[1], r.width(), r.height(), 1.0f, false);
1149 if (blurhash != null) {
1150 cached = new BitmapDrawable(blurhash);
1151 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1152 return cached;
1153 }
1154 } else if (parts[0].equals("image/thumbhash")) {
1155 ThumbHash.Image image;
1156 try {
1157 image = ThumbHash.thumbHashToRGBA(data);
1158 } catch (final Exception e) {
1159 continue;
1160 }
1161 int[] pixels = new int[image.width * image.height];
1162 for (int i = 0; i < pixels.length; i++) {
1163 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);
1164 }
1165 cached = new BitmapDrawable(Bitmap.createBitmap(pixels, image.width, image.height, Bitmap.Config.ARGB_8888));
1166 if (parts[1] != null && cached != null) cache.put(parts[1], cached);
1167 return cached;
1168 }
1169 }
1170 }
1171 }
1172
1173 return null;
1174 }
1175
1176 public Drawable getThumbnail(Message message, Resources res, int size, boolean cacheOnly) throws IOException {
1177 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1178 DownloadableFile file = getFile(message);
1179 Drawable thumbnail = cache.get(file.getAbsolutePath());
1180 if (thumbnail != null) return thumbnail;
1181
1182 if ((thumbnail == null) && (!cacheOnly)) {
1183 synchronized (THUMBNAIL_LOCK) {
1184 List<Element> thumbs = message.getFileParams() != null ? message.getFileParams().getThumbnails() : null;
1185 if (thumbs != null && !thumbs.isEmpty()) {
1186 for (Element thumb : thumbs) {
1187 Uri uri = Uri.parse(thumb.getAttribute("uri"));
1188 if (uri.getScheme().equals("data")) {
1189 if (android.os.Build.VERSION.SDK_INT < 28) continue;
1190 String[] parts = uri.getSchemeSpecificPart().split(",", 2);
1191
1192 byte[] data;
1193 if (Arrays.asList(parts[0].split(";")).contains("base64")) {
1194 String[] parts2 = parts[0].split(";", 2);
1195 parts[0] = parts2[0];
1196 data = Base64.decode(parts[1], 0);
1197 } else {
1198 data = parts[1].getBytes("UTF-8");
1199 }
1200
1201 if (parts[0].equals("image/blurhash")) continue; // blurhash only for fallback
1202 if (parts[0].equals("image/thumbhash")) continue; // thumbhash only for fallback
1203
1204 ImageDecoder.Source source = ImageDecoder.createSource(ByteBuffer.wrap(data));
1205 thumbnail = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1206 int w = info.getSize().getWidth();
1207 int h = info.getSize().getHeight();
1208 Rect r = rectForSize(w, h, size);
1209 decoder.setTargetSize(r.width(), r.height());
1210 });
1211
1212 if (thumbnail != null && file.getAbsolutePath() != null) {
1213 cache.put(file.getAbsolutePath(), thumbnail);
1214 return thumbnail;
1215 }
1216 } else if (uri.getScheme().equals("cid")) {
1217 Cid cid = BobTransfer.cid(uri);
1218 if (cid == null) continue;
1219 DownloadableFile f = mXmppConnectionService.getFileForCid(cid);
1220 if (f != null && f.canRead()) {
1221 return getThumbnail(f, res, size, cacheOnly);
1222 }
1223 }
1224 }
1225 }
1226 }
1227 }
1228
1229 return getThumbnail(file, res, size, cacheOnly);
1230 }
1231
1232 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly) throws IOException {
1233 return getThumbnail(file, res, size, cacheOnly, file.getAbsolutePath());
1234 }
1235
1236 public Drawable getThumbnail(DownloadableFile file, Resources res, int size, boolean cacheOnly, String cacheKey) throws IOException {
1237 final LruCache<String, Drawable> cache = mXmppConnectionService.getDrawableCache();
1238 Drawable thumbnail = cache.get(cacheKey);
1239 if ((thumbnail == null) && (!cacheOnly) && file.exists()) {
1240 synchronized (THUMBNAIL_LOCK) {
1241 thumbnail = cache.get(cacheKey);
1242 if (thumbnail != null) {
1243 return thumbnail;
1244 }
1245 final String mime = file.getMimeType();
1246 if ("image/svg+xml".equals(mime)) {
1247 thumbnail = getSVG(file, size);
1248 } else if ("application/pdf".equals(mime)) {
1249 thumbnail = new BitmapDrawable(res, getPdfDocumentPreview(file, size));
1250 } else if (mime.startsWith("video/")) {
1251 thumbnail = new BitmapDrawable(res, getVideoPreview(file, size));
1252 } else {
1253 thumbnail = getImagePreview(file, res, size, mime);
1254 if (thumbnail == null) {
1255 throw new FileNotFoundException();
1256 }
1257 }
1258 if (cacheKey != null && thumbnail != null) cache.put(cacheKey, thumbnail);
1259 }
1260 }
1261 return thumbnail;
1262 }
1263
1264 public Bitmap getThumbnailBitmap(Message message, Resources res, int size) throws IOException {
1265 final Drawable drawable = getThumbnail(message, res, size, false);
1266 if (drawable == null) return null;
1267 return drawDrawable(drawable);
1268 }
1269
1270 public Bitmap getThumbnailBitmap(DownloadableFile file, Resources res, int size, String cacheKey) throws IOException {
1271 final Drawable drawable = getThumbnail(file, res, size, false, cacheKey);
1272 if (drawable == null) return null;
1273 return drawDrawable(drawable);
1274 }
1275
1276 public static Rect rectForSize(int w, int h, int size) {
1277 int scalledW;
1278 int scalledH;
1279 if (w <= h) {
1280 scalledW = Math.max((int) (w / ((double) h / size)), 1);
1281 scalledH = size;
1282 } else {
1283 scalledW = size;
1284 scalledH = Math.max((int) (h / ((double) w / size)), 1);
1285 }
1286
1287 if (scalledW > w || scalledH > h) return new Rect(0, 0, w, h);
1288
1289 return new Rect(0, 0, scalledW, scalledH);
1290 }
1291
1292 private Drawable getImagePreview(File file, Resources res, int size, final String mime) throws IOException {
1293 if (android.os.Build.VERSION.SDK_INT >= 28) {
1294 ImageDecoder.Source source = ImageDecoder.createSource(file);
1295 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1296 int w = info.getSize().getWidth();
1297 int h = info.getSize().getHeight();
1298 Rect r = rectForSize(w, h, size);
1299 decoder.setTargetSize(r.width(), r.height());
1300 });
1301 } else {
1302 BitmapFactory.Options options = new BitmapFactory.Options();
1303 options.inSampleSize = calcSampleSize(file, size);
1304 Bitmap bitmap = null;
1305 try {
1306 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1307 } catch (OutOfMemoryError e) {
1308 options.inSampleSize *= 2;
1309 bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1310 }
1311 if (bitmap == null) return null;
1312
1313 bitmap = resize(bitmap, size);
1314 bitmap = rotate(bitmap, getRotation(file));
1315 if (mime.equals("image/gif")) {
1316 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
1317 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
1318 bitmap.recycle();
1319 bitmap = withGifOverlay;
1320 }
1321 return new BitmapDrawable(res, bitmap);
1322 }
1323 }
1324
1325 public static Bitmap drawDrawable(Drawable drawable) {
1326 if (drawable == null) return null;
1327
1328 Bitmap bitmap = null;
1329
1330 if (drawable instanceof BitmapDrawable) {
1331 bitmap = ((BitmapDrawable) drawable).getBitmap();
1332 if (bitmap != null) return bitmap;
1333 }
1334
1335 Rect bounds = drawable.getBounds();
1336 int width = drawable.getIntrinsicWidth();
1337 if (width < 1) width = bounds == null || bounds.right < 1 ? 256 : bounds.right;
1338 int height = drawable.getIntrinsicHeight();
1339 if (height < 1) height = bounds == null || bounds.bottom < 1 ? 256 : bounds.bottom;
1340
1341 bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
1342 Canvas canvas = new Canvas(bitmap);
1343 drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
1344 drawable.draw(canvas);
1345 return bitmap;
1346 }
1347
1348 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
1349 Bitmap overlay =
1350 BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
1351 Canvas canvas = new Canvas(bitmap);
1352 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
1353 Log.d(
1354 Config.LOGTAG,
1355 "target size overlay: "
1356 + targetSize
1357 + " overlay bitmap size was "
1358 + overlay.getHeight());
1359 float left = (canvas.getWidth() - targetSize) / 2.0f;
1360 float top = (canvas.getHeight() - targetSize) / 2.0f;
1361 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
1362 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
1363 }
1364
1365 /** https://stackoverflow.com/a/3943023/210897 */
1366 private boolean paintOverlayBlack(final Bitmap bitmap) {
1367 final int h = bitmap.getHeight();
1368 final int w = bitmap.getWidth();
1369 int record = 0;
1370 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
1371 for (int x = Math.round(w * IGNORE_PADDING);
1372 x < w - Math.round(w * IGNORE_PADDING);
1373 ++x) {
1374 int pixel = bitmap.getPixel(x, y);
1375 if ((Color.red(pixel) * 0.299
1376 + Color.green(pixel) * 0.587
1377 + Color.blue(pixel) * 0.114)
1378 > 186) {
1379 --record;
1380 } else {
1381 ++record;
1382 }
1383 }
1384 }
1385 return record < 0;
1386 }
1387
1388 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
1389 final int h = bitmap.getHeight();
1390 final int w = bitmap.getWidth();
1391 int white = 0;
1392 for (int y = 0; y < h; ++y) {
1393 for (int x = 0; x < w; ++x) {
1394 int pixel = bitmap.getPixel(x, y);
1395 if ((Color.red(pixel) * 0.299
1396 + Color.green(pixel) * 0.587
1397 + Color.blue(pixel) * 0.114)
1398 > 186) {
1399 white++;
1400 }
1401 }
1402 }
1403 return white > (h * w * 0.4f);
1404 }
1405
1406 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
1407 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1408 Bitmap frame;
1409 try {
1410 metadataRetriever.setDataSource(mXmppConnectionService, uri);
1411 frame = metadataRetriever.getFrameAtTime(0);
1412 metadataRetriever.release();
1413 return cropCenterSquare(frame, size);
1414 } catch (Exception e) {
1415 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1416 frame.eraseColor(0xff000000);
1417 return frame;
1418 }
1419 }
1420
1421 private Bitmap getVideoPreview(final File file, final int size) {
1422 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1423 Bitmap frame;
1424 try {
1425 metadataRetriever.setDataSource(file.getAbsolutePath());
1426 frame = metadataRetriever.getFrameAtTime(0);
1427 metadataRetriever.release();
1428 frame = resize(frame, size);
1429 } catch (IOException | RuntimeException e) {
1430 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1431 frame.eraseColor(0xff000000);
1432 }
1433 drawOverlay(
1434 frame,
1435 paintOverlayBlack(frame)
1436 ? R.drawable.play_video_black
1437 : R.drawable.play_video_white,
1438 0.75f);
1439 return frame;
1440 }
1441
1442 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1443 private Bitmap getPdfDocumentPreview(final File file, final int size) {
1444 try {
1445 final ParcelFileDescriptor fileDescriptor =
1446 ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1447 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
1448 drawOverlay(
1449 rendered,
1450 paintOverlayBlackPdf(rendered)
1451 ? R.drawable.open_pdf_black
1452 : R.drawable.open_pdf_white,
1453 0.75f);
1454 return rendered;
1455 } catch (final IOException | SecurityException e) {
1456 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
1457 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1458 placeholder.eraseColor(0xff000000);
1459 return placeholder;
1460 }
1461 }
1462
1463 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1464 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
1465 try {
1466 ParcelFileDescriptor fileDescriptor =
1467 mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
1468 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
1469 return cropCenterSquare(bitmap, size);
1470 } catch (Exception e) {
1471 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1472 placeholder.eraseColor(0xff000000);
1473 return placeholder;
1474 }
1475 }
1476
1477 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1478 private Bitmap renderPdfDocument(
1479 ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
1480 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1481 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1482 final Dimensions dimensions =
1483 scalePdfDimensions(
1484 new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
1485 final Bitmap rendered =
1486 Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
1487 rendered.eraseColor(0xffffffff);
1488 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
1489 page.close();
1490 pdfRenderer.close();
1491 fileDescriptor.close();
1492 return rendered;
1493 }
1494
1495 public Uri getTakePhotoUri() {
1496 final String filename =
1497 String.format("IMG_%s.%s", IMAGE_DATE_FORMAT.format(new Date()), "jpg");
1498 final File directory;
1499 if (Config.ONLY_INTERNAL_STORAGE) {
1500 directory = new File(mXmppConnectionService.getCacheDir(), "Camera");
1501 } else {
1502 directory =
1503 new File(
1504 Environment.getExternalStoragePublicDirectory(
1505 Environment.DIRECTORY_DCIM),
1506 "Camera");
1507 }
1508 final File file = new File(directory, filename);
1509 file.getParentFile().mkdirs();
1510 return getUriForFile(mXmppConnectionService, file);
1511 }
1512
1513 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1514
1515 final Pair<Avatar,Boolean> uncompressAvatar = getUncompressedAvatar(image);
1516 if (uncompressAvatar != null && uncompressAvatar.first != null &&
1517 (uncompressAvatar.first.image.length() <= Config.AVATAR_CHAR_LIMIT || uncompressAvatar.second)) {
1518 return uncompressAvatar.first;
1519 }
1520 if (uncompressAvatar != null && uncompressAvatar.first != null) {
1521 Log.d(
1522 Config.LOGTAG,
1523 "uncompressed avatar exceeded char limit by "
1524 + (uncompressAvatar.first.image.length() - Config.AVATAR_CHAR_LIMIT));
1525 }
1526
1527 Bitmap bm = cropCenterSquare(image, size);
1528 if (bm == null) {
1529 return null;
1530 }
1531 if (hasAlpha(bm)) {
1532 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1533 bm.recycle();
1534 bm = cropCenterSquare(image, 96);
1535 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1536 }
1537 return getPepAvatar(bm, format, 100);
1538 }
1539
1540 private Pair<Avatar,Boolean> getUncompressedAvatar(Uri uri) {
1541 try {
1542 if (android.os.Build.VERSION.SDK_INT >= 28) {
1543 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), uri);
1544 int[] size = new int[] { 0, 0 };
1545 boolean[] animated = new boolean[] { false };
1546 String[] mimeType = new String[] { null };
1547 Drawable drawable = ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1548 mimeType[0] = info.getMimeType();
1549 animated[0] = info.isAnimated();
1550 size[0] = info.getSize().getWidth();
1551 size[1] = info.getSize().getHeight();
1552 });
1553
1554 if (animated[0]) {
1555 Avatar avatar = getPepAvatar(uri, size[0], size[1], mimeType[0]);
1556 if (avatar != null) return new Pair(avatar, true);
1557 }
1558
1559 return new Pair(getPepAvatar(drawDrawable(drawable), Bitmap.CompressFormat.PNG, 100), false);
1560 } else {
1561 Bitmap bitmap =
1562 BitmapFactory.decodeStream(
1563 mXmppConnectionService.getContentResolver().openInputStream(uri));
1564 return new Pair(getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100), false);
1565 }
1566 } catch (Exception e) {
1567 try {
1568 final SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1569 return new Pair(getPepAvatar(uri, (int) svg.getDocumentWidth(), (int) svg.getDocumentHeight(), "image/svg+xml"), true);
1570 } catch (Exception e2) {
1571 return null;
1572 }
1573 }
1574 }
1575
1576 private Avatar getPepAvatar(Uri uri, int width, int height, final String mimeType) throws IOException, NoSuchAlgorithmException {
1577 AssetFileDescriptor fd = mXmppConnectionService.getContentResolver().openAssetFileDescriptor(uri, "r");
1578 if (fd.getLength() > 100000) return null; // Too big to use raw file
1579
1580 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1581 Base64OutputStream mBase64OutputStream =
1582 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1583 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1584 DigestOutputStream mDigestOutputStream =
1585 new DigestOutputStream(mBase64OutputStream, digest);
1586
1587 ByteStreams.copy(fd.createInputStream(), mDigestOutputStream);
1588 mDigestOutputStream.flush();
1589 mDigestOutputStream.close();
1590
1591 final Avatar avatar = new Avatar();
1592 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1593 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1594 avatar.type = mimeType;
1595 avatar.width = width;
1596 avatar.height = height;
1597 return avatar;
1598 }
1599
1600 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1601 try {
1602 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1603 Base64OutputStream mBase64OutputStream =
1604 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1605 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1606 DigestOutputStream mDigestOutputStream =
1607 new DigestOutputStream(mBase64OutputStream, digest);
1608 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1609 return null;
1610 }
1611 mDigestOutputStream.flush();
1612 mDigestOutputStream.close();
1613 long chars = mByteArrayOutputStream.size();
1614 if (format != Bitmap.CompressFormat.PNG
1615 && quality >= 50
1616 && chars >= Config.AVATAR_CHAR_LIMIT) {
1617 int q = quality - 2;
1618 Log.d(
1619 Config.LOGTAG,
1620 "avatar char length was " + chars + " reducing quality to " + q);
1621 return getPepAvatar(bitmap, format, q);
1622 }
1623 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1624 final Avatar avatar = new Avatar();
1625 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1626 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1627 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1628 avatar.type = "image/webp";
1629 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1630 avatar.type = "image/jpeg";
1631 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1632 avatar.type = "image/png";
1633 }
1634 avatar.width = bitmap.getWidth();
1635 avatar.height = bitmap.getHeight();
1636 return avatar;
1637 } catch (OutOfMemoryError e) {
1638 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1639 return null;
1640 } catch (Exception e) {
1641 return null;
1642 }
1643 }
1644
1645 public Avatar getStoredPepAvatar(String hash) {
1646 if (hash == null) {
1647 return null;
1648 }
1649 Avatar avatar = new Avatar();
1650 final File file = getAvatarFile(hash);
1651 FileInputStream is = null;
1652 try {
1653 avatar.size = file.length();
1654 BitmapFactory.Options options = new BitmapFactory.Options();
1655 options.inJustDecodeBounds = true;
1656 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1657 is = new FileInputStream(file);
1658 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1659 Base64OutputStream mBase64OutputStream =
1660 new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1661 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1662 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1663 byte[] buffer = new byte[4096];
1664 int length;
1665 while ((length = is.read(buffer)) > 0) {
1666 os.write(buffer, 0, length);
1667 }
1668 os.flush();
1669 os.close();
1670 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1671 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1672 avatar.height = options.outHeight;
1673 avatar.width = options.outWidth;
1674 avatar.type = options.outMimeType;
1675 return avatar;
1676 } catch (NoSuchAlgorithmException | IOException e) {
1677 return null;
1678 } finally {
1679 close(is);
1680 }
1681 }
1682
1683 public boolean isAvatarCached(Avatar avatar) {
1684 final File file = getAvatarFile(avatar.getFilename());
1685 return file.exists();
1686 }
1687
1688 public boolean save(final Avatar avatar) {
1689 File file;
1690 if (isAvatarCached(avatar)) {
1691 file = getAvatarFile(avatar.getFilename());
1692 avatar.size = file.length();
1693 } else {
1694 file =
1695 new File(
1696 mXmppConnectionService.getCacheDir().getAbsolutePath()
1697 + "/"
1698 + UUID.randomUUID().toString());
1699 if (file.getParentFile().mkdirs()) {
1700 Log.d(Config.LOGTAG, "created cache directory");
1701 }
1702 OutputStream os = null;
1703 try {
1704 if (!file.createNewFile()) {
1705 Log.d(
1706 Config.LOGTAG,
1707 "unable to create temporary file " + file.getAbsolutePath());
1708 }
1709 os = new FileOutputStream(file);
1710 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1711 digest.reset();
1712 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1713 final byte[] bytes = avatar.getImageAsBytes();
1714 mDigestOutputStream.write(bytes);
1715 mDigestOutputStream.flush();
1716 mDigestOutputStream.close();
1717 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1718 if (sha1sum.equals(avatar.sha1sum)) {
1719 final File outputFile = getAvatarFile(avatar.getFilename());
1720 if (outputFile.getParentFile().mkdirs()) {
1721 Log.d(Config.LOGTAG, "created avatar directory");
1722 }
1723 final File avatarFile = getAvatarFile(avatar.getFilename());
1724 if (!file.renameTo(avatarFile)) {
1725 Log.d(
1726 Config.LOGTAG,
1727 "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1728 return false;
1729 }
1730 } else {
1731 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1732 if (!file.delete()) {
1733 Log.d(Config.LOGTAG, "unable to delete temporary file");
1734 }
1735 return false;
1736 }
1737 avatar.size = bytes.length;
1738 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1739 return false;
1740 } finally {
1741 close(os);
1742 }
1743 }
1744 return true;
1745 }
1746
1747 public void deleteHistoricAvatarPath() {
1748 delete(getHistoricAvatarPath());
1749 }
1750
1751 private void delete(final File file) {
1752 if (file.isDirectory()) {
1753 final File[] files = file.listFiles();
1754 if (files != null) {
1755 for (final File f : files) {
1756 delete(f);
1757 }
1758 }
1759 }
1760 if (file.delete()) {
1761 Log.d(Config.LOGTAG, "deleted " + file.getAbsolutePath());
1762 }
1763 }
1764
1765 private File getHistoricAvatarPath() {
1766 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1767 }
1768
1769 public File getAvatarFile(String avatar) {
1770 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1771 }
1772
1773 public Uri getAvatarUri(String avatar) {
1774 return Uri.fromFile(getAvatarFile(avatar));
1775 }
1776
1777 public Drawable cropCenterSquareDrawable(Uri image, int size) {
1778 if (android.os.Build.VERSION.SDK_INT >= 28) {
1779 try {
1780 ImageDecoder.Source source = ImageDecoder.createSource(mXmppConnectionService.getContentResolver(), image);
1781 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
1782 int w = info.getSize().getWidth();
1783 int h = info.getSize().getHeight();
1784 Rect r = rectForSize(w, h, size);
1785 decoder.setTargetSize(r.width(), r.height());
1786
1787 int newSize = Math.min(r.width(), r.height());
1788 int left = (r.width() - newSize) / 2;
1789 int top = (r.height() - newSize) / 2;
1790 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
1791 });
1792 } catch (final IOException e) {
1793 return getSVGSquare(image, size);
1794 }
1795 } else {
1796 Bitmap bitmap = cropCenterSquare(image, size);
1797 return bitmap == null ? null : new BitmapDrawable(bitmap);
1798 }
1799 }
1800
1801 public Bitmap cropCenterSquare(Uri image, int size) {
1802 if (image == null) {
1803 return null;
1804 }
1805 InputStream is = null;
1806 try {
1807 BitmapFactory.Options options = new BitmapFactory.Options();
1808 options.inSampleSize = calcSampleSize(image, size);
1809 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1810 if (is == null) {
1811 return null;
1812 }
1813 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1814 if (input == null) {
1815 return null;
1816 } else {
1817 input = rotate(input, getRotation(image));
1818 return cropCenterSquare(input, size);
1819 }
1820 } catch (FileNotFoundException | SecurityException e) {
1821 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1822 return null;
1823 } finally {
1824 close(is);
1825 }
1826 }
1827
1828 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1829 if (image == null) {
1830 return null;
1831 }
1832 InputStream is = null;
1833 try {
1834 BitmapFactory.Options options = new BitmapFactory.Options();
1835 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1836 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1837 if (is == null) {
1838 return null;
1839 }
1840 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1841 if (source == null) {
1842 return null;
1843 }
1844 int sourceWidth = source.getWidth();
1845 int sourceHeight = source.getHeight();
1846 float xScale = (float) newWidth / sourceWidth;
1847 float yScale = (float) newHeight / sourceHeight;
1848 float scale = Math.max(xScale, yScale);
1849 float scaledWidth = scale * sourceWidth;
1850 float scaledHeight = scale * sourceHeight;
1851 float left = (newWidth - scaledWidth) / 2;
1852 float top = (newHeight - scaledHeight) / 2;
1853
1854 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1855 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1856 Canvas canvas = new Canvas(dest);
1857 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1858 if (source.isRecycled()) {
1859 source.recycle();
1860 }
1861 return dest;
1862 } catch (SecurityException e) {
1863 return null; // android 6.0 with revoked permissions for example
1864 } catch (FileNotFoundException e) {
1865 return null;
1866 } finally {
1867 close(is);
1868 }
1869 }
1870
1871 public Bitmap cropCenterSquare(Bitmap input, int size) {
1872 int w = input.getWidth();
1873 int h = input.getHeight();
1874
1875 float scale = Math.max((float) size / h, (float) size / w);
1876
1877 float outWidth = scale * w;
1878 float outHeight = scale * h;
1879 float left = (size - outWidth) / 2;
1880 float top = (size - outHeight) / 2;
1881 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1882
1883 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1884 Canvas canvas = new Canvas(output);
1885 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1886 if (!input.isRecycled()) {
1887 input.recycle();
1888 }
1889 return output;
1890 }
1891
1892 private int calcSampleSize(Uri image, int size)
1893 throws FileNotFoundException, SecurityException {
1894 final BitmapFactory.Options options = new BitmapFactory.Options();
1895 options.inJustDecodeBounds = true;
1896 final InputStream inputStream =
1897 mXmppConnectionService.getContentResolver().openInputStream(image);
1898 BitmapFactory.decodeStream(inputStream, null, options);
1899 close(inputStream);
1900 return calcSampleSize(options, size);
1901 }
1902
1903 public void updateFileParams(Message message) {
1904 updateFileParams(message, null);
1905 }
1906
1907 public void updateFileParams(final Message message, final String url) {
1908 updateFileParams(message, url, true);
1909 }
1910
1911 public void updateFileParams(final Message message, String url, boolean updateCids) {
1912 final boolean encrypted =
1913 message.getEncryption() == Message.ENCRYPTION_PGP
1914 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED;
1915 final DownloadableFile file = getFile(message);
1916 final String mime = file.getMimeType();
1917 final boolean privateMessage = message.isPrivateMessage();
1918 final boolean image =
1919 message.getType() == Message.TYPE_IMAGE
1920 || (mime != null && mime.startsWith("image/"));
1921 Message.FileParams fileParams = message.getFileParams();
1922 if (fileParams == null) fileParams = new Message.FileParams();
1923 Cid[] cids = new Cid[0];
1924 try {
1925 cids = calculateCids(new FileInputStream(file));
1926 fileParams.setCids(List.of(cids));
1927 } catch (final IOException | NoSuchAlgorithmException e) { }
1928 if (url == null) {
1929 for (Cid cid : cids) {
1930 url = mXmppConnectionService.getUrlForCid(cid);
1931 if (url != null) {
1932 fileParams.url = url;
1933 break;
1934 }
1935 }
1936 } else {
1937 fileParams.url = url;
1938 }
1939 if (fileParams.getName() == null) fileParams.setName(file.getName());
1940 fileParams.setMediaType(mime);
1941 if (encrypted && !file.exists()) {
1942 Log.d(Config.LOGTAG, "skipping updateFileParams because file is encrypted");
1943 final DownloadableFile encryptedFile = getFile(message, false);
1944 fileParams.size = encryptedFile.getSize();
1945 } else {
1946 Log.d(Config.LOGTAG, "running updateFileParams");
1947 final boolean ambiguous = MimeUtils.AMBIGUOUS_CONTAINER_FORMATS.contains(mime);
1948 final boolean video = mime != null && mime.startsWith("video/");
1949 final boolean audio = mime != null && mime.startsWith("audio/");
1950 final boolean pdf = "application/pdf".equals(mime);
1951 fileParams.size = file.getSize();
1952 if (ambiguous) {
1953 try {
1954 final Dimensions dimensions = getVideoDimensions(file);
1955 if (dimensions.valid()) {
1956 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is video");
1957 fileParams.width = dimensions.width;
1958 fileParams.height = dimensions.height;
1959 } else {
1960 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1961 fileParams.runtime = getMediaRuntime(file);
1962 }
1963 } catch (final IOException | NotAVideoFile e) {
1964 Log.d(Config.LOGTAG, "ambiguous file " + mime + " is audio");
1965 fileParams.runtime = getMediaRuntime(file);
1966 }
1967 } else if (image || video || pdf) {
1968 try {
1969 final Dimensions dimensions;
1970 if (video) {
1971 dimensions = getVideoDimensions(file);
1972 } else if (pdf) {
1973 dimensions = getPdfDocumentDimensions(file);
1974 } else if ("image/svg+xml".equals(mime)) {
1975 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
1976 dimensions = new Dimensions((int) svg.getDocumentHeight(), (int) svg.getDocumentWidth());
1977 } else {
1978 dimensions = getImageDimensions(file);
1979 }
1980 if (dimensions.valid()) {
1981 fileParams.width = dimensions.width;
1982 fileParams.height = dimensions.height;
1983 }
1984 } catch (final IOException | SVGParseException | NotAVideoFile notAVideoFile) {
1985 Log.d(
1986 Config.LOGTAG,
1987 "file with mime type " + file.getMimeType() + " was not a video file");
1988 // fall threw
1989 }
1990 } else if (audio) {
1991 fileParams.runtime = getMediaRuntime(file);
1992 }
1993 try {
1994 Bitmap thumb = getThumbnailBitmap(file, mXmppConnectionService.getResources(), 100, file.getAbsolutePath() + " x 100");
1995 if (thumb != null) {
1996 int[] pixels = new int[thumb.getWidth() * thumb.getHeight()];
1997 byte[] rgba = new byte[pixels.length * 4];
1998 try {
1999 thumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2000 } catch (final IllegalStateException e) {
2001 Bitmap softThumb = thumb.copy(Bitmap.Config.ARGB_8888, false);
2002 softThumb.getPixels(pixels, 0, thumb.getWidth(), 0, 0, thumb.getWidth(), thumb.getHeight());
2003 softThumb.recycle();
2004 }
2005 for (int i = 0; i < pixels.length; i++) {
2006 rgba[i*4] = (byte)((pixels[i] >> 16) & 0xff);
2007 rgba[(i*4)+1] = (byte)((pixels[i] >> 8) & 0xff);
2008 rgba[(i*4)+2] = (byte)(pixels[i] & 0xff);
2009 rgba[(i*4)+3] = (byte)((pixels[i] >> 24) & 0xff);
2010 }
2011 fileParams.addThumbnail(thumb.getWidth(), thumb.getHeight(), "image/thumbhash", "data:image/thumbhash;base64," + Base64.encodeToString(ThumbHash.rgbaToThumbHash(thumb.getWidth(), thumb.getHeight(), rgba), Base64.NO_WRAP));
2012 }
2013 } catch (final IOException e) { }
2014 }
2015 message.setFileParams(fileParams);
2016 message.setDeleted(false);
2017 message.setType(
2018 privateMessage
2019 ? Message.TYPE_PRIVATE_FILE
2020 : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
2021
2022 if (updateCids) {
2023 try {
2024 for (int i = 0; i < cids.length; i++) {
2025 mXmppConnectionService.saveCid(cids[i], file);
2026 }
2027 } catch (XmppConnectionService.BlockedMediaException e) { }
2028 }
2029 }
2030
2031 private int getMediaRuntime(final File file) {
2032 try {
2033 final MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
2034 mediaMetadataRetriever.setDataSource(file.toString());
2035 final String value =
2036 mediaMetadataRetriever.extractMetadata(
2037 MediaMetadataRetriever.METADATA_KEY_DURATION);
2038 if (Strings.isNullOrEmpty(value)) {
2039 return 0;
2040 }
2041 return Integer.parseInt(value);
2042 } catch (final Exception e) {
2043 return 0;
2044 }
2045 }
2046
2047 private Dimensions getImageDimensions(File file) {
2048 final BitmapFactory.Options options = new BitmapFactory.Options();
2049 options.inJustDecodeBounds = true;
2050 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
2051 final int rotation = getRotation(file);
2052 final boolean rotated = rotation == 90 || rotation == 270;
2053 final int imageHeight = rotated ? options.outWidth : options.outHeight;
2054 final int imageWidth = rotated ? options.outHeight : options.outWidth;
2055 return new Dimensions(imageHeight, imageWidth);
2056 }
2057
2058 private Dimensions getVideoDimensions(final File file) throws NotAVideoFile, IOException {
2059 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
2060 try {
2061 metadataRetriever.setDataSource(file.getAbsolutePath());
2062 } catch (RuntimeException e) {
2063 throw new NotAVideoFile(e);
2064 }
2065 return getVideoDimensions(metadataRetriever);
2066 }
2067
2068 private Dimensions getPdfDocumentDimensions(final File file) {
2069 final ParcelFileDescriptor fileDescriptor;
2070 try {
2071 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
2072 if (fileDescriptor == null) {
2073 return new Dimensions(0, 0);
2074 }
2075 } catch (final FileNotFoundException e) {
2076 return new Dimensions(0, 0);
2077 }
2078 try {
2079 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
2080 final PdfRenderer.Page page = pdfRenderer.openPage(0);
2081 final int height = page.getHeight();
2082 final int width = page.getWidth();
2083 page.close();
2084 pdfRenderer.close();
2085 return scalePdfDimensions(new Dimensions(height, width));
2086 } catch (final IOException | SecurityException e) {
2087 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
2088 return new Dimensions(0, 0);
2089 }
2090 }
2091
2092 private Dimensions scalePdfDimensions(Dimensions in) {
2093 final DisplayMetrics displayMetrics =
2094 mXmppConnectionService.getResources().getDisplayMetrics();
2095 final int target = (int) (displayMetrics.density * 288);
2096 return scalePdfDimensions(in, target, true);
2097 }
2098
2099 private static Dimensions scalePdfDimensions(
2100 final Dimensions in, final int target, final boolean fit) {
2101 final int w, h;
2102 if (fit == (in.width <= in.height)) {
2103 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
2104 h = target;
2105 } else {
2106 w = target;
2107 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
2108 }
2109 return new Dimensions(h, w);
2110 }
2111
2112 public Drawable getAvatar(String avatar, int size) {
2113 if (avatar == null) {
2114 return null;
2115 }
2116
2117 if (android.os.Build.VERSION.SDK_INT >= 28) {
2118 try {
2119 ImageDecoder.Source source = ImageDecoder.createSource(getAvatarFile(avatar));
2120 return ImageDecoder.decodeDrawable(source, (decoder, info, src) -> {
2121 int w = info.getSize().getWidth();
2122 int h = info.getSize().getHeight();
2123 Rect r = rectForSize(w, h, size);
2124 decoder.setTargetSize(r.width(), r.height());
2125
2126 int newSize = Math.min(r.width(), r.height());
2127 int left = (r.width() - newSize) / 2;
2128 int top = (r.height() - newSize) / 2;
2129 decoder.setCrop(new Rect(left, top, left + newSize, top + newSize));
2130 });
2131 } catch (final IOException e) {
2132 return getSVGSquare(getAvatarUri(avatar), size);
2133 }
2134 } else {
2135 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
2136 return bm == null ? null : new BitmapDrawable(bm);
2137 }
2138 }
2139
2140 public Drawable getSVGSquare(Uri uri, int size) {
2141 try {
2142 SVG svg = SVG.getFromInputStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
2143 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.FULLSCREEN);
2144 svg.setDocumentWidth("100%");
2145 svg.setDocumentHeight("100%");
2146
2147 float w = svg.getDocumentWidth();
2148 float h = svg.getDocumentHeight();
2149 float scale = Math.max((float) size / h, (float) size / w);
2150 float outWidth = scale * w;
2151 float outHeight = scale * h;
2152 float left = (size - outWidth) / 2;
2153 float top = (size - outHeight) / 2;
2154 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
2155
2156 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
2157 Canvas canvas = new Canvas(output);
2158 svg.renderToCanvas(canvas, target);
2159
2160 return new SVGDrawable(output);
2161 } catch (final IOException | SVGParseException e) {
2162 return null;
2163 }
2164 }
2165
2166 public Drawable getSVG(File file, int size) {
2167 try {
2168 SVG svg = SVG.getFromInputStream(new FileInputStream(file));
2169 svg.setDocumentPreserveAspectRatio(com.caverock.androidsvg.PreserveAspectRatio.TOP);
2170
2171 float w = svg.getDocumentWidth();
2172 float h = svg.getDocumentHeight();
2173 Rect r = rectForSize((int) w, (int) h, size);
2174 svg.setDocumentWidth("100%");
2175 svg.setDocumentHeight("100%");
2176
2177 Bitmap output = Bitmap.createBitmap(r.width(), r.height(), Bitmap.Config.ARGB_8888);
2178 Canvas canvas = new Canvas(output);
2179 svg.renderToCanvas(canvas);
2180
2181 return new SVGDrawable(output);
2182 } catch (final IOException | SVGParseException e) {
2183 return null;
2184 }
2185 }
2186
2187 private static class Dimensions {
2188 public final int width;
2189 public final int height;
2190
2191 Dimensions(int height, int width) {
2192 this.width = width;
2193 this.height = height;
2194 }
2195
2196 public int getMin() {
2197 return Math.min(width, height);
2198 }
2199
2200 public boolean valid() {
2201 return width > 0 && height > 0;
2202 }
2203 }
2204
2205 private static class NotAVideoFile extends Exception {
2206 public NotAVideoFile(Throwable t) {
2207 super(t);
2208 }
2209
2210 public NotAVideoFile() {
2211 super();
2212 }
2213 }
2214
2215 public static class ImageCompressionException extends Exception {
2216
2217 ImageCompressionException(String message) {
2218 super(message);
2219 }
2220 }
2221
2222 public static class FileCopyException extends Exception {
2223 private final int resId;
2224
2225 private FileCopyException(@StringRes int resId) {
2226 this.resId = resId;
2227 }
2228
2229 public @StringRes int getResId() {
2230 return resId;
2231 }
2232 }
2233
2234 public static class SVGDrawable extends BitmapDrawable {
2235 public SVGDrawable(Bitmap bm) { super(bm); }
2236 }
2237}