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