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