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