1package eu.siacs.conversations.persistance;
2
3import android.annotation.TargetApi;
4import android.content.ContentResolver;
5import android.content.Context;
6import android.database.Cursor;
7import android.graphics.Bitmap;
8import android.graphics.BitmapFactory;
9import android.graphics.Canvas;
10import android.graphics.Color;
11import android.graphics.Matrix;
12import android.graphics.Paint;
13import android.graphics.RectF;
14import android.graphics.pdf.PdfRenderer;
15import android.media.MediaMetadataRetriever;
16import android.media.MediaScannerConnection;
17import android.net.Uri;
18import android.os.Build;
19import android.os.Environment;
20import android.os.ParcelFileDescriptor;
21import android.provider.MediaStore;
22import android.provider.OpenableColumns;
23import android.system.Os;
24import android.system.StructStat;
25import android.util.Base64;
26import android.util.Base64OutputStream;
27import android.util.DisplayMetrics;
28import android.util.Log;
29import android.util.LruCache;
30
31import androidx.annotation.RequiresApi;
32import androidx.core.content.FileProvider;
33
34import java.io.ByteArrayOutputStream;
35import java.io.Closeable;
36import java.io.File;
37import java.io.FileDescriptor;
38import java.io.FileInputStream;
39import java.io.FileNotFoundException;
40import java.io.FileOutputStream;
41import java.io.IOException;
42import java.io.InputStream;
43import java.io.OutputStream;
44import java.net.ServerSocket;
45import java.net.Socket;
46import java.net.URL;
47import java.security.DigestOutputStream;
48import java.security.MessageDigest;
49import java.security.NoSuchAlgorithmException;
50import java.text.SimpleDateFormat;
51import java.util.ArrayList;
52import java.util.Date;
53import java.util.List;
54import java.util.Locale;
55import java.util.UUID;
56
57import eu.siacs.conversations.Config;
58import eu.siacs.conversations.R;
59import eu.siacs.conversations.entities.DownloadableFile;
60import eu.siacs.conversations.entities.Message;
61import eu.siacs.conversations.services.AttachFileToConversationRunnable;
62import eu.siacs.conversations.services.XmppConnectionService;
63import eu.siacs.conversations.ui.RecordingActivity;
64import eu.siacs.conversations.ui.util.Attachment;
65import eu.siacs.conversations.utils.Compatibility;
66import eu.siacs.conversations.utils.CryptoHelper;
67import eu.siacs.conversations.utils.ExifHelper;
68import eu.siacs.conversations.utils.FileUtils;
69import eu.siacs.conversations.utils.FileWriterException;
70import eu.siacs.conversations.utils.MimeUtils;
71import eu.siacs.conversations.xmpp.pep.Avatar;
72
73public class FileBackend {
74
75 private static final Object THUMBNAIL_LOCK = new Object();
76
77 private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
78
79 private static final String FILE_PROVIDER = ".files";
80 private static final float IGNORE_PADDING = 0.15f;
81 private final XmppConnectionService mXmppConnectionService;
82
83 public FileBackend(XmppConnectionService service) {
84 this.mXmppConnectionService = service;
85 }
86
87 private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
88 return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
89 }
90
91 public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
92 for (String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
93 if (path.startsWith(getConversationsDirectory(context, type))) {
94 return true;
95 }
96 }
97 return false;
98 }
99
100 public static long getFileSize(Context context, Uri uri) {
101 try {
102 final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
103 if (cursor != null && cursor.moveToFirst()) {
104 long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
105 cursor.close();
106 return size;
107 } else {
108 return -1;
109 }
110 } catch (Exception e) {
111 return -1;
112 }
113 }
114
115 public static boolean allFilesUnderSize(Context context, List<Attachment> attachments, long max) {
116 final boolean compressVideo = !AttachFileToConversationRunnable.getVideoCompression(context).equals("uncompressed");
117 if (max <= 0) {
118 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
119 return true; //exception to be compatible with HTTP Upload < v0.2
120 }
121 for (Attachment attachment : attachments) {
122 if (attachment.getType() != Attachment.Type.FILE) {
123 continue;
124 }
125 String mime = attachment.getMime();
126 if (mime != null && mime.startsWith("video/") && compressVideo) {
127 try {
128 Dimensions dimensions = FileBackend.getVideoDimensions(context, attachment.getUri());
129 if (dimensions.getMin() > 720) {
130 Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
131 continue;
132 }
133 } catch (NotAVideoFile notAVideoFile) {
134 //ignore and fall through
135 }
136 }
137 if (FileBackend.getFileSize(context, attachment.getUri()) > max) {
138 Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
139 return false;
140 }
141 }
142 return true;
143 }
144
145 public static String getConversationsDirectory(Context context, final String type) {
146 if (Config.ONLY_INTERNAL_STORAGE) {
147 return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
148 } else {
149 return getAppMediaDirectory(context) + context.getString(R.string.app_name) + " " + type + "/";
150 }
151 }
152
153 public static String getAppMediaDirectory(Context context) {
154 return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + context.getString(R.string.app_name) + "/Media/";
155 }
156
157 public static String getBackupDirectory(Context context) {
158 return getBackupDirectory(context.getString(R.string.app_name));
159 }
160
161 public static String getBackupDirectory(String app) {
162 return Environment.getExternalStorageDirectory().getAbsolutePath() + "/" + app + "/Backup/";
163 }
164
165 private static Bitmap rotate(Bitmap bitmap, int degree) {
166 if (degree == 0) {
167 return bitmap;
168 }
169 int w = bitmap.getWidth();
170 int h = bitmap.getHeight();
171 Matrix mtx = new Matrix();
172 mtx.postRotate(degree);
173 Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
174 if (bitmap != null && !bitmap.isRecycled()) {
175 bitmap.recycle();
176 }
177 return result;
178 }
179
180 public static boolean isPathBlacklisted(String path) {
181 final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
182 return path.startsWith(androidDataPath);
183 }
184
185 private static Paint createAntiAliasingPaint() {
186 Paint paint = new Paint();
187 paint.setAntiAlias(true);
188 paint.setFilterBitmap(true);
189 paint.setDither(true);
190 return paint;
191 }
192
193 private static String getTakePhotoPath() {
194 return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
195 }
196
197 public static Uri getUriForUri(Context context, Uri uri) {
198 if ("file".equals(uri.getScheme())) {
199 return getUriForFile(context, new File(uri.getPath()));
200 } else {
201 return uri;
202 }
203 }
204
205 public static Uri getUriForFile(Context context, File file) {
206 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
207 try {
208 return FileProvider.getUriForFile(context, getAuthority(context), file);
209 } catch (IllegalArgumentException e) {
210 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
211 throw new SecurityException(e);
212 } else {
213 return Uri.fromFile(file);
214 }
215 }
216 } else {
217 return Uri.fromFile(file);
218 }
219 }
220
221 public static String getAuthority(Context context) {
222 return context.getPackageName() + FILE_PROVIDER;
223 }
224
225 private static boolean hasAlpha(final Bitmap bitmap) {
226 for (int x = 0; x < bitmap.getWidth(); ++x) {
227 for (int y = 0; y < bitmap.getWidth(); ++y) {
228 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
229 return true;
230 }
231 }
232 }
233 return false;
234 }
235
236 private static int calcSampleSize(File image, int size) {
237 BitmapFactory.Options options = new BitmapFactory.Options();
238 options.inJustDecodeBounds = true;
239 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
240 return calcSampleSize(options, size);
241 }
242
243
244 private static int calcSampleSize(BitmapFactory.Options options, int size) {
245 int height = options.outHeight;
246 int width = options.outWidth;
247 int inSampleSize = 1;
248
249 if (height > size || width > size) {
250 int halfHeight = height / 2;
251 int halfWidth = width / 2;
252
253 while ((halfHeight / inSampleSize) > size
254 && (halfWidth / inSampleSize) > size) {
255 inSampleSize *= 2;
256 }
257 }
258 return inSampleSize;
259 }
260
261 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
262 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
263 try {
264 mediaMetadataRetriever.setDataSource(context, uri);
265 } catch (RuntimeException e) {
266 throw new NotAVideoFile(e);
267 }
268 return getVideoDimensions(mediaMetadataRetriever);
269 }
270
271 private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
272 Bitmap bitmap = null;
273 try {
274 bitmap = mediaMetadataRetriever.getFrameAtTime();
275 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
276 } catch (Exception e) {
277 return null;
278 } finally {
279 if (bitmap != null) {
280 bitmap.recycle();
281 }
282 }
283 }
284
285 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
286 String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
287 if (hasVideo == null) {
288 throw new NotAVideoFile();
289 }
290 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
291 if (dimensions != null) {
292 return dimensions;
293 }
294 final int rotation;
295 if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
296 rotation = extractRotationFromMediaRetriever(metadataRetriever);
297 } else {
298 rotation = 0;
299 }
300 boolean rotated = rotation == 90 || rotation == 270;
301 int height;
302 try {
303 String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
304 height = Integer.parseInt(h);
305 } catch (Exception e) {
306 height = -1;
307 }
308 int width;
309 try {
310 String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
311 width = Integer.parseInt(w);
312 } catch (Exception e) {
313 width = -1;
314 }
315 metadataRetriever.release();
316 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
317 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
318 }
319
320 @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
321 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
322 String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
323 try {
324 return Integer.parseInt(r);
325 } catch (Exception e) {
326 return 0;
327 }
328 }
329
330 public static void close(final Closeable stream) {
331 if (stream != null) {
332 try {
333 stream.close();
334 } catch (Exception e) {
335 Log.d(Config.LOGTAG, "unable to close stream", e);
336 }
337 }
338 }
339
340 public static void close(final Socket socket) {
341 if (socket != null) {
342 try {
343 socket.close();
344 } catch (IOException e) {
345 Log.d(Config.LOGTAG, "unable to close socket", e);
346 }
347 }
348 }
349
350 public static void close(final ServerSocket socket) {
351 if (socket != null) {
352 try {
353 socket.close();
354 } catch (IOException e) {
355 Log.d(Config.LOGTAG, "unable to close server socket", e);
356 }
357 }
358 }
359
360 public static boolean weOwnFile(Context context, Uri uri) {
361 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
362 return false;
363 } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
364 return fileIsInFilesDir(context, uri);
365 } else {
366 return weOwnFileLollipop(uri);
367 }
368 }
369
370 /**
371 * This is more than hacky but probably way better than doing nothing
372 * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
373 * and check against those as well
374 */
375 private static boolean fileIsInFilesDir(Context context, Uri uri) {
376 try {
377 final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
378 final String needle = new File(uri.getPath()).getCanonicalPath();
379 return needle.startsWith(haystack);
380 } catch (IOException e) {
381 return false;
382 }
383 }
384
385 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
386 private static boolean weOwnFileLollipop(Uri uri) {
387 try {
388 File file = new File(uri.getPath());
389 FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
390 StructStat st = Os.fstat(fd);
391 return st.st_uid == android.os.Process.myUid();
392 } catch (FileNotFoundException e) {
393 return false;
394 } catch (Exception e) {
395 return true;
396 }
397 }
398
399 public static Uri getMediaUri(Context context, File file) {
400 final String filePath = file.getAbsolutePath();
401 final Cursor cursor;
402 try {
403 cursor = context.getContentResolver().query(
404 MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
405 new String[]{MediaStore.Images.Media._ID},
406 MediaStore.Images.Media.DATA + "=? ",
407 new String[]{filePath}, null);
408 } catch (SecurityException e) {
409 return null;
410 }
411 if (cursor != null && cursor.moveToFirst()) {
412 final int id = cursor.getInt(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
413 cursor.close();
414 return Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
415 } else {
416 return null;
417 }
418 }
419
420 public static void updateFileParams(Message message, URL url, long size) {
421 final StringBuilder body = new StringBuilder();
422 body.append(url.toString()).append('|').append(size);
423 message.setBody(body.toString());
424 }
425
426 public Bitmap getPreviewForUri(Attachment attachment, int size, boolean cacheOnly) {
427 final String key = "attachment_" + attachment.getUuid().toString() + "_" + size;
428 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
429 Bitmap bitmap = cache.get(key);
430 if (bitmap != null || cacheOnly) {
431 return bitmap;
432 }
433 final String mime = attachment.getMime();
434 if ("application/pdf".equals(mime) && Compatibility.runsTwentyOne()) {
435 bitmap = cropCenterSquarePdf(attachment.getUri(), size);
436 drawOverlay(bitmap, paintOverlayBlackPdf(bitmap) ? R.drawable.open_pdf_black : R.drawable.open_pdf_white, 0.75f);
437 } else if (mime != null && mime.startsWith("video/")) {
438 bitmap = cropCenterSquareVideo(attachment.getUri(), size);
439 drawOverlay(bitmap, paintOverlayBlack(bitmap) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
440 } else {
441 bitmap = cropCenterSquare(attachment.getUri(), size);
442 if (bitmap != null && "image/gif".equals(mime)) {
443 Bitmap withGifOverlay = bitmap.copy(Bitmap.Config.ARGB_8888, true);
444 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
445 bitmap.recycle();
446 bitmap = withGifOverlay;
447 }
448 }
449 if (bitmap != null) {
450 cache.put(key, bitmap);
451 }
452 return bitmap;
453 }
454
455 private void createNoMedia(File diretory) {
456 final File noMedia = new File(diretory, ".nomedia");
457 if (!noMedia.exists()) {
458 try {
459 if (!noMedia.createNewFile()) {
460 Log.d(Config.LOGTAG, "created nomedia file " + noMedia.getAbsolutePath());
461 }
462 } catch (Exception e) {
463 Log.d(Config.LOGTAG, "could not create nomedia file");
464 }
465 }
466 }
467
468 public void updateMediaScanner(File file) {
469 updateMediaScanner(file, null);
470 }
471
472 public void updateMediaScanner(File file, final Runnable callback) {
473 if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
474 MediaScannerConnection.scanFile(mXmppConnectionService, new String[]{file.getAbsolutePath()}, null, new MediaScannerConnection.MediaScannerConnectionClient() {
475 @Override
476 public void onMediaScannerConnected() {
477
478 }
479
480 @Override
481 public void onScanCompleted(String path, Uri uri) {
482 if (callback != null && file.getAbsolutePath().equals(path)) {
483 callback.run();
484 } else {
485 Log.d(Config.LOGTAG, "media scanner scanned wrong file");
486 if (callback != null) {
487 callback.run();
488 }
489 }
490 }
491 });
492 return;
493 /*Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
494 intent.setData(Uri.fromFile(file));
495 mXmppConnectionService.sendBroadcast(intent);*/
496 } else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
497 createNoMedia(file.getParentFile());
498 }
499 if (callback != null) {
500 callback.run();
501 }
502 }
503
504 public boolean deleteFile(Message message) {
505 File file = getFile(message);
506 if (file.delete()) {
507 updateMediaScanner(file);
508 return true;
509 } else {
510 return false;
511 }
512 }
513
514 public DownloadableFile getFile(Message message) {
515 return getFile(message, true);
516 }
517
518
519 public DownloadableFile getFileForPath(String path) {
520 return getFileForPath(path, MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(path)));
521 }
522
523 public DownloadableFile getFileForPath(String path, String mime) {
524 final DownloadableFile file;
525 if (path.startsWith("/")) {
526 file = new DownloadableFile(path);
527 } else {
528 if (mime != null && mime.startsWith("image/")) {
529 file = new DownloadableFile(getConversationsDirectory("Images") + path);
530 } else if (mime != null && mime.startsWith("video/")) {
531 file = new DownloadableFile(getConversationsDirectory("Videos") + path);
532 } else {
533 file = new DownloadableFile(getConversationsDirectory("Files") + path);
534 }
535 }
536 return file;
537 }
538
539 public boolean isInternalFile(final File file) {
540 final File internalFile = getFileForPath(file.getName());
541 return file.getAbsolutePath().equals(internalFile.getAbsolutePath());
542 }
543
544 public DownloadableFile getFile(Message message, boolean decrypted) {
545 final boolean encrypted = !decrypted
546 && (message.getEncryption() == Message.ENCRYPTION_PGP
547 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
548 String path = message.getRelativeFilePath();
549 if (path == null) {
550 path = message.getUuid();
551 }
552 final DownloadableFile file = getFileForPath(path, message.getMimeType());
553 if (encrypted) {
554 return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
555 } else {
556 return file;
557 }
558 }
559
560 public List<Attachment> convertToAttachments(List<DatabaseBackend.FilePath> relativeFilePaths) {
561 List<Attachment> attachments = new ArrayList<>();
562 for (DatabaseBackend.FilePath relativeFilePath : relativeFilePaths) {
563 final String mime = MimeUtils.guessMimeTypeFromExtension(MimeUtils.extractRelevantExtension(relativeFilePath.path));
564 final File file = getFileForPath(relativeFilePath.path, mime);
565 attachments.add(Attachment.of(relativeFilePath.uuid, file, mime));
566 }
567 return attachments;
568 }
569
570 private String getConversationsDirectory(final String type) {
571 return getConversationsDirectory(mXmppConnectionService, type);
572 }
573
574 private Bitmap resize(final Bitmap originalBitmap, int size) throws IOException {
575 int w = originalBitmap.getWidth();
576 int h = originalBitmap.getHeight();
577 if (w <= 0 || h <= 0) {
578 throw new IOException("Decoded bitmap reported bounds smaller 0");
579 } else if (Math.max(w, h) > size) {
580 int scalledW;
581 int scalledH;
582 if (w <= h) {
583 scalledW = Math.max((int) (w / ((double) h / size)), 1);
584 scalledH = size;
585 } else {
586 scalledW = size;
587 scalledH = Math.max((int) (h / ((double) w / size)), 1);
588 }
589 final Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
590 if (!originalBitmap.isRecycled()) {
591 originalBitmap.recycle();
592 }
593 return result;
594 } else {
595 return originalBitmap;
596 }
597 }
598
599 public boolean useImageAsIs(Uri uri) {
600 String path = getOriginalPath(uri);
601 if (path == null || isPathBlacklisted(path)) {
602 return false;
603 }
604 File file = new File(path);
605 long size = file.length();
606 if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
607 return false;
608 }
609 BitmapFactory.Options options = new BitmapFactory.Options();
610 options.inJustDecodeBounds = true;
611 try {
612 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
613 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
614 return false;
615 }
616 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
617 } catch (FileNotFoundException e) {
618 return false;
619 }
620 }
621
622 public String getOriginalPath(Uri uri) {
623 return FileUtils.getPath(mXmppConnectionService, uri);
624 }
625
626 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
627 Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
628 file.getParentFile().mkdirs();
629 OutputStream os = null;
630 InputStream is = null;
631 try {
632 file.createNewFile();
633 os = new FileOutputStream(file);
634 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
635 byte[] buffer = new byte[1024];
636 int length;
637 while ((length = is.read(buffer)) > 0) {
638 try {
639 os.write(buffer, 0, length);
640 } catch (IOException e) {
641 throw new FileWriterException();
642 }
643 }
644 try {
645 os.flush();
646 } catch (IOException e) {
647 throw new FileWriterException();
648 }
649 } catch (FileNotFoundException e) {
650 throw new FileCopyException(R.string.error_file_not_found);
651 } catch (FileWriterException e) {
652 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
653 } catch (IOException e) {
654 e.printStackTrace();
655 throw new FileCopyException(R.string.error_io_exception);
656 } finally {
657 close(os);
658 close(is);
659 }
660 }
661
662 public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
663 String mime = MimeUtils.guessMimeTypeFromUriAndMime(mXmppConnectionService, uri, type);
664 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
665 String extension = MimeUtils.guessExtensionFromMimeType(mime);
666 if (extension == null) {
667 Log.d(Config.LOGTAG, "extension from mime type was null");
668 extension = getExtensionFromUri(uri);
669 }
670 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
671 extension = "oga";
672 }
673 message.setRelativeFilePath(message.getUuid() + "." + extension);
674 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
675 }
676
677 private String getExtensionFromUri(Uri uri) {
678 String[] projection = {MediaStore.MediaColumns.DATA};
679 String filename = null;
680 Cursor cursor;
681 try {
682 cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
683 } catch (IllegalArgumentException e) {
684 cursor = null;
685 }
686 if (cursor != null) {
687 try {
688 if (cursor.moveToFirst()) {
689 filename = cursor.getString(0);
690 }
691 } catch (Exception e) {
692 filename = null;
693 } finally {
694 cursor.close();
695 }
696 }
697 if (filename == null) {
698 final List<String> segments = uri.getPathSegments();
699 if (segments.size() > 0) {
700 filename = segments.get(segments.size() - 1);
701 }
702 }
703 int pos = filename == null ? -1 : filename.lastIndexOf('.');
704 return pos > 0 ? filename.substring(pos + 1) : null;
705 }
706
707 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException, ImageCompressionException {
708 final File parent = file.getParentFile();
709 if (parent.mkdirs()) {
710 Log.d(Config.LOGTAG,"created parent directory");
711 }
712 InputStream is = null;
713 OutputStream os = null;
714 try {
715 if (!file.exists() && !file.createNewFile()) {
716 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
717 }
718 is = mXmppConnectionService.getContentResolver().openInputStream(image);
719 if (is == null) {
720 throw new FileCopyException(R.string.error_not_an_image_file);
721 }
722 Bitmap originalBitmap;
723 BitmapFactory.Options options = new BitmapFactory.Options();
724 int inSampleSize = (int) Math.pow(2, sampleSize);
725 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
726 options.inSampleSize = inSampleSize;
727 originalBitmap = BitmapFactory.decodeStream(is, null, options);
728 is.close();
729 if (originalBitmap == null) {
730 throw new ImageCompressionException("Source file was not an image");
731 }
732 if (hasAlpha(originalBitmap)) {
733 originalBitmap.recycle();
734 throw new ImageCompressionException("Source file had alpha channel");
735 }
736 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
737 int rotation = getRotation(image);
738 scaledBitmap = rotate(scaledBitmap, rotation);
739 boolean targetSizeReached = false;
740 int quality = Config.IMAGE_QUALITY;
741 final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
742 while (!targetSizeReached) {
743 os = new FileOutputStream(file);
744 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
745 if (!success) {
746 throw new FileCopyException(R.string.error_compressing_image);
747 }
748 os.flush();
749 targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
750 quality -= 5;
751 }
752 scaledBitmap.recycle();
753 } catch (FileNotFoundException e) {
754 throw new FileCopyException(R.string.error_file_not_found);
755 } catch (IOException e) {
756 e.printStackTrace();
757 throw new FileCopyException(R.string.error_io_exception);
758 } catch (SecurityException e) {
759 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
760 } catch (OutOfMemoryError e) {
761 ++sampleSize;
762 if (sampleSize <= 3) {
763 copyImageToPrivateStorage(file, image, sampleSize);
764 } else {
765 throw new FileCopyException(R.string.error_out_of_memory);
766 }
767 } finally {
768 close(os);
769 close(is);
770 }
771 }
772
773 public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException, ImageCompressionException {
774 Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
775 copyImageToPrivateStorage(file, image, 0);
776 }
777
778 public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException, ImageCompressionException {
779 switch (Config.IMAGE_FORMAT) {
780 case JPEG:
781 message.setRelativeFilePath(message.getUuid() + ".jpg");
782 break;
783 case PNG:
784 message.setRelativeFilePath(message.getUuid() + ".png");
785 break;
786 case WEBP:
787 message.setRelativeFilePath(message.getUuid() + ".webp");
788 break;
789 }
790 copyImageToPrivateStorage(getFile(message), image);
791 updateFileParams(message);
792 }
793
794 public boolean unusualBounds(Uri image) {
795 try {
796 BitmapFactory.Options options = new BitmapFactory.Options();
797 options.inJustDecodeBounds = true;
798 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
799 float ratio = (float) options.outHeight / options.outWidth;
800 return ratio > (21.0f / 9.0f) || ratio < (9.0f / 21.0f);
801 } catch (Exception e) {
802 return false;
803 }
804 }
805
806 private int getRotation(File file) {
807 return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
808 }
809
810 private int getRotation(Uri image) {
811 InputStream is = null;
812 try {
813 is = mXmppConnectionService.getContentResolver().openInputStream(image);
814 return ExifHelper.getOrientation(is);
815 } catch (FileNotFoundException e) {
816 return 0;
817 } finally {
818 close(is);
819 }
820 }
821
822 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws IOException {
823 final String uuid = message.getUuid();
824 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
825 Bitmap thumbnail = cache.get(uuid);
826 if ((thumbnail == null) && (!cacheOnly)) {
827 synchronized (THUMBNAIL_LOCK) {
828 thumbnail = cache.get(uuid);
829 if (thumbnail != null) {
830 return thumbnail;
831 }
832 DownloadableFile file = getFile(message);
833 final String mime = file.getMimeType();
834 if ("application/pdf".equals(mime) && Compatibility.runsTwentyOne()) {
835 thumbnail = getPdfDocumentPreview(file, size);
836 } else if (mime.startsWith("video/")) {
837 thumbnail = getVideoPreview(file, size);
838 } else {
839 final Bitmap fullSize = getFullSizeImagePreview(file, size);
840 if (fullSize == null) {
841 throw new FileNotFoundException();
842 }
843 thumbnail = resize(fullSize, size);
844 thumbnail = rotate(thumbnail, getRotation(file));
845 if (mime.equals("image/gif")) {
846 Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
847 drawOverlay(withGifOverlay, paintOverlayBlack(withGifOverlay) ? R.drawable.play_gif_black : R.drawable.play_gif_white, 1.0f);
848 thumbnail.recycle();
849 thumbnail = withGifOverlay;
850 }
851 }
852 cache.put(uuid, thumbnail);
853 }
854 }
855 return thumbnail;
856 }
857
858 private Bitmap getFullSizeImagePreview(File file, int size) {
859 BitmapFactory.Options options = new BitmapFactory.Options();
860 options.inSampleSize = calcSampleSize(file, size);
861 try {
862 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
863 } catch (OutOfMemoryError e) {
864 options.inSampleSize *= 2;
865 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
866 }
867 }
868
869 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
870 Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
871 Canvas canvas = new Canvas(bitmap);
872 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
873 Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
874 float left = (canvas.getWidth() - targetSize) / 2.0f;
875 float top = (canvas.getHeight() - targetSize) / 2.0f;
876 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
877 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
878 }
879
880 /**
881 * https://stackoverflow.com/a/3943023/210897
882 */
883 private boolean paintOverlayBlack(final Bitmap bitmap) {
884 final int h = bitmap.getHeight();
885 final int w = bitmap.getWidth();
886 int record = 0;
887 for (int y = Math.round(h * IGNORE_PADDING); y < h - Math.round(h * IGNORE_PADDING); ++y) {
888 for (int x = Math.round(w * IGNORE_PADDING); x < w - Math.round(w * IGNORE_PADDING); ++x) {
889 int pixel = bitmap.getPixel(x, y);
890 if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
891 --record;
892 } else {
893 ++record;
894 }
895 }
896 }
897 return record < 0;
898 }
899
900 private boolean paintOverlayBlackPdf(final Bitmap bitmap) {
901 final int h = bitmap.getHeight();
902 final int w = bitmap.getWidth();
903 int white = 0;
904 for (int y = 0; y < h; ++y) {
905 for (int x = 0; x < w; ++x) {
906 int pixel = bitmap.getPixel(x, y);
907 if ((Color.red(pixel) * 0.299 + Color.green(pixel) * 0.587 + Color.blue(pixel) * 0.114) > 186) {
908 white++;
909 }
910 }
911 }
912 return white > (h * w * 0.4f);
913 }
914
915 private Bitmap cropCenterSquareVideo(Uri uri, int size) {
916 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
917 Bitmap frame;
918 try {
919 metadataRetriever.setDataSource(mXmppConnectionService, uri);
920 frame = metadataRetriever.getFrameAtTime(0);
921 metadataRetriever.release();
922 return cropCenterSquare(frame, size);
923 } catch (Exception e) {
924 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
925 frame.eraseColor(0xff000000);
926 return frame;
927 }
928 }
929
930 private Bitmap getVideoPreview(final File file, final int size) {
931 final MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
932 Bitmap frame;
933 try {
934 metadataRetriever.setDataSource(file.getAbsolutePath());
935 frame = metadataRetriever.getFrameAtTime(0);
936 metadataRetriever.release();
937 frame = resize(frame, size);
938 } catch (IOException | RuntimeException e) {
939 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
940 frame.eraseColor(0xff000000);
941 }
942 drawOverlay(frame, paintOverlayBlack(frame) ? R.drawable.play_video_black : R.drawable.play_video_white, 0.75f);
943 return frame;
944 }
945
946 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
947 private Bitmap getPdfDocumentPreview(final File file, final int size) {
948 try {
949 final ParcelFileDescriptor fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
950 final Bitmap rendered = renderPdfDocument(fileDescriptor, size, true);
951 drawOverlay(rendered, paintOverlayBlackPdf(rendered) ? R.drawable.open_pdf_black : R.drawable.open_pdf_white, 0.75f);
952 return rendered;
953 } catch (final IOException | SecurityException e) {
954 Log.d(Config.LOGTAG, "unable to render PDF document preview", e);
955 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
956 placeholder.eraseColor(0xff000000);
957 return placeholder;
958 }
959 }
960
961
962 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
963 private Bitmap cropCenterSquarePdf(final Uri uri, final int size) {
964 try {
965 ParcelFileDescriptor fileDescriptor = mXmppConnectionService.getContentResolver().openFileDescriptor(uri, "r");
966 final Bitmap bitmap = renderPdfDocument(fileDescriptor, size, false);
967 return cropCenterSquare(bitmap, size);
968 } catch (Exception e) {
969 final Bitmap placeholder = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
970 placeholder.eraseColor(0xff000000);
971 return placeholder;
972 }
973 }
974
975 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
976 private Bitmap renderPdfDocument(ParcelFileDescriptor fileDescriptor, int targetSize, boolean fit) throws IOException {
977 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
978 final PdfRenderer.Page page = pdfRenderer.openPage(0);
979 final Dimensions dimensions = scalePdfDimensions(new Dimensions(page.getHeight(), page.getWidth()), targetSize, fit);
980 final Bitmap rendered = Bitmap.createBitmap(dimensions.width, dimensions.height, Bitmap.Config.ARGB_8888);
981 rendered.eraseColor(0xffffffff);
982 page.render(rendered, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
983 page.close();
984 pdfRenderer.close();
985 fileDescriptor.close();
986 return rendered;
987 }
988
989 public Uri getTakePhotoUri() {
990 File file;
991 if (Config.ONLY_INTERNAL_STORAGE) {
992 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
993 } else {
994 file = new File(getTakePhotoPath() + "IMG_" + IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
995 }
996 file.getParentFile().mkdirs();
997 return getUriForFile(mXmppConnectionService, file);
998 }
999
1000 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
1001
1002 final Avatar uncompressAvatar = getUncompressedAvatar(image);
1003 if (uncompressAvatar != null && uncompressAvatar.image.length() <= Config.AVATAR_CHAR_LIMIT) {
1004 return uncompressAvatar;
1005 }
1006 if (uncompressAvatar != null) {
1007 Log.d(Config.LOGTAG, "uncompressed avatar exceeded char limit by " + (uncompressAvatar.image.length() - Config.AVATAR_CHAR_LIMIT));
1008 }
1009
1010 Bitmap bm = cropCenterSquare(image, size);
1011 if (bm == null) {
1012 return null;
1013 }
1014 if (hasAlpha(bm)) {
1015 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
1016 bm.recycle();
1017 bm = cropCenterSquare(image, 96);
1018 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
1019 }
1020 return getPepAvatar(bm, format, 100);
1021 }
1022
1023 private Avatar getUncompressedAvatar(Uri uri) {
1024 Bitmap bitmap = null;
1025 try {
1026 bitmap = BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri));
1027 return getPepAvatar(bitmap, Bitmap.CompressFormat.PNG, 100);
1028 } catch (Exception e) {
1029 return null;
1030 } finally {
1031 if (bitmap != null) {
1032 bitmap.recycle();
1033 }
1034 }
1035 }
1036
1037 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
1038 try {
1039 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1040 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1041 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1042 DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
1043 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
1044 return null;
1045 }
1046 mDigestOutputStream.flush();
1047 mDigestOutputStream.close();
1048 long chars = mByteArrayOutputStream.size();
1049 if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
1050 int q = quality - 2;
1051 Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
1052 return getPepAvatar(bitmap, format, q);
1053 }
1054 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
1055 final Avatar avatar = new Avatar();
1056 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1057 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1058 if (format.equals(Bitmap.CompressFormat.WEBP)) {
1059 avatar.type = "image/webp";
1060 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
1061 avatar.type = "image/jpeg";
1062 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
1063 avatar.type = "image/png";
1064 }
1065 avatar.width = bitmap.getWidth();
1066 avatar.height = bitmap.getHeight();
1067 return avatar;
1068 } catch (OutOfMemoryError e) {
1069 Log.d(Config.LOGTAG, "unable to convert avatar to base64 due to low memory");
1070 return null;
1071 } catch (Exception e) {
1072 return null;
1073 }
1074 }
1075
1076 public Avatar getStoredPepAvatar(String hash) {
1077 if (hash == null) {
1078 return null;
1079 }
1080 Avatar avatar = new Avatar();
1081 final File file = getAvatarFile(hash);
1082 FileInputStream is = null;
1083 try {
1084 avatar.size = file.length();
1085 BitmapFactory.Options options = new BitmapFactory.Options();
1086 options.inJustDecodeBounds = true;
1087 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1088 is = new FileInputStream(file);
1089 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
1090 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
1091 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1092 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
1093 byte[] buffer = new byte[4096];
1094 int length;
1095 while ((length = is.read(buffer)) > 0) {
1096 os.write(buffer, 0, length);
1097 }
1098 os.flush();
1099 os.close();
1100 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
1101 avatar.image = new String(mByteArrayOutputStream.toByteArray());
1102 avatar.height = options.outHeight;
1103 avatar.width = options.outWidth;
1104 avatar.type = options.outMimeType;
1105 return avatar;
1106 } catch (NoSuchAlgorithmException | IOException e) {
1107 return null;
1108 } finally {
1109 close(is);
1110 }
1111 }
1112
1113 public boolean isAvatarCached(Avatar avatar) {
1114 final File file = getAvatarFile(avatar.getFilename());
1115 return file.exists();
1116 }
1117
1118 public boolean save(final Avatar avatar) {
1119 File file;
1120 if (isAvatarCached(avatar)) {
1121 file = getAvatarFile(avatar.getFilename());
1122 avatar.size = file.length();
1123 } else {
1124 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
1125 if (file.getParentFile().mkdirs()) {
1126 Log.d(Config.LOGTAG, "created cache directory");
1127 }
1128 OutputStream os = null;
1129 try {
1130 if (!file.createNewFile()) {
1131 Log.d(Config.LOGTAG, "unable to create temporary file " + file.getAbsolutePath());
1132 }
1133 os = new FileOutputStream(file);
1134 MessageDigest digest = MessageDigest.getInstance("SHA-1");
1135 digest.reset();
1136 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
1137 final byte[] bytes = avatar.getImageAsBytes();
1138 mDigestOutputStream.write(bytes);
1139 mDigestOutputStream.flush();
1140 mDigestOutputStream.close();
1141 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
1142 if (sha1sum.equals(avatar.sha1sum)) {
1143 final File outputFile = getAvatarFile(avatar.getFilename());
1144 if (outputFile.getParentFile().mkdirs()) {
1145 Log.d(Config.LOGTAG, "created avatar directory");
1146 }
1147 final File avatarFile = getAvatarFile(avatar.getFilename());
1148 if (!file.renameTo(avatarFile)) {
1149 Log.d(Config.LOGTAG, "unable to rename " + file.getAbsolutePath() + " to " + outputFile);
1150 return false;
1151 }
1152 } else {
1153 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
1154 if (!file.delete()) {
1155 Log.d(Config.LOGTAG, "unable to delete temporary file");
1156 }
1157 return false;
1158 }
1159 avatar.size = bytes.length;
1160 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
1161 return false;
1162 } finally {
1163 close(os);
1164 }
1165 }
1166 return true;
1167 }
1168
1169 public void deleteHistoricAvatarPath() {
1170 delete(getHistoricAvatarPath());
1171 }
1172
1173 private void delete(final File file) {
1174 if (file.isDirectory()) {
1175 final File[] files = file.listFiles();
1176 if (files != null) {
1177 for (final File f : files) {
1178 delete(f);
1179 }
1180 }
1181 }
1182 if (file.delete()) {
1183 Log.d(Config.LOGTAG,"deleted "+file.getAbsolutePath());
1184 }
1185 }
1186
1187 private File getHistoricAvatarPath() {
1188 return new File(mXmppConnectionService.getFilesDir(), "/avatars/");
1189 }
1190
1191 private File getAvatarFile(String avatar) {
1192 return new File(mXmppConnectionService.getCacheDir(), "/avatars/" + avatar);
1193 }
1194
1195 public Uri getAvatarUri(String avatar) {
1196 return Uri.fromFile(getAvatarFile(avatar));
1197 }
1198
1199 public Bitmap cropCenterSquare(Uri image, int size) {
1200 if (image == null) {
1201 return null;
1202 }
1203 InputStream is = null;
1204 try {
1205 BitmapFactory.Options options = new BitmapFactory.Options();
1206 options.inSampleSize = calcSampleSize(image, size);
1207 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1208 if (is == null) {
1209 return null;
1210 }
1211 Bitmap input = BitmapFactory.decodeStream(is, null, options);
1212 if (input == null) {
1213 return null;
1214 } else {
1215 input = rotate(input, getRotation(image));
1216 return cropCenterSquare(input, size);
1217 }
1218 } catch (FileNotFoundException | SecurityException e) {
1219 Log.d(Config.LOGTAG, "unable to open file " + image.toString(), e);
1220 return null;
1221 } finally {
1222 close(is);
1223 }
1224 }
1225
1226 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
1227 if (image == null) {
1228 return null;
1229 }
1230 InputStream is = null;
1231 try {
1232 BitmapFactory.Options options = new BitmapFactory.Options();
1233 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
1234 is = mXmppConnectionService.getContentResolver().openInputStream(image);
1235 if (is == null) {
1236 return null;
1237 }
1238 Bitmap source = BitmapFactory.decodeStream(is, null, options);
1239 if (source == null) {
1240 return null;
1241 }
1242 int sourceWidth = source.getWidth();
1243 int sourceHeight = source.getHeight();
1244 float xScale = (float) newWidth / sourceWidth;
1245 float yScale = (float) newHeight / sourceHeight;
1246 float scale = Math.max(xScale, yScale);
1247 float scaledWidth = scale * sourceWidth;
1248 float scaledHeight = scale * sourceHeight;
1249 float left = (newWidth - scaledWidth) / 2;
1250 float top = (newHeight - scaledHeight) / 2;
1251
1252 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
1253 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
1254 Canvas canvas = new Canvas(dest);
1255 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
1256 if (source.isRecycled()) {
1257 source.recycle();
1258 }
1259 return dest;
1260 } catch (SecurityException e) {
1261 return null; //android 6.0 with revoked permissions for example
1262 } catch (FileNotFoundException e) {
1263 return null;
1264 } finally {
1265 close(is);
1266 }
1267 }
1268
1269 public Bitmap cropCenterSquare(Bitmap input, int size) {
1270 int w = input.getWidth();
1271 int h = input.getHeight();
1272
1273 float scale = Math.max((float) size / h, (float) size / w);
1274
1275 float outWidth = scale * w;
1276 float outHeight = scale * h;
1277 float left = (size - outWidth) / 2;
1278 float top = (size - outHeight) / 2;
1279 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
1280
1281 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
1282 Canvas canvas = new Canvas(output);
1283 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
1284 if (!input.isRecycled()) {
1285 input.recycle();
1286 }
1287 return output;
1288 }
1289
1290 private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
1291 BitmapFactory.Options options = new BitmapFactory.Options();
1292 options.inJustDecodeBounds = true;
1293 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
1294 return calcSampleSize(options, size);
1295 }
1296
1297 public void updateFileParams(Message message) {
1298 updateFileParams(message, null);
1299 }
1300
1301 public void updateFileParams(Message message, URL url) {
1302 DownloadableFile file = getFile(message);
1303 final String mime = file.getMimeType();
1304 final boolean privateMessage = message.isPrivateMessage();
1305 final boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
1306 final boolean video = mime != null && mime.startsWith("video/");
1307 final boolean audio = mime != null && mime.startsWith("audio/");
1308 final boolean pdf = "application/pdf".equals(mime);
1309 final StringBuilder body = new StringBuilder();
1310 if (url != null) {
1311 body.append(url.toString());
1312 }
1313 body.append('|').append(file.getSize());
1314 if (image || video || (pdf && Compatibility.runsTwentyOne())) {
1315 try {
1316 final Dimensions dimensions;
1317 if (video) {
1318 dimensions = getVideoDimensions(file);
1319 } else if (pdf && Compatibility.runsTwentyOne()) {
1320 dimensions = getPdfDocumentDimensions(file);
1321 } else {
1322 dimensions = getImageDimensions(file);
1323 }
1324 if (dimensions.valid()) {
1325 body.append('|').append(dimensions.width).append('|').append(dimensions.height);
1326 }
1327 } catch (NotAVideoFile notAVideoFile) {
1328 Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
1329 //fall threw
1330 }
1331 } else if (audio) {
1332 body.append("|0|0|").append(getMediaRuntime(file));
1333 }
1334 message.setBody(body.toString());
1335 message.setDeleted(false);
1336 message.setType(privateMessage ? Message.TYPE_PRIVATE_FILE : (image ? Message.TYPE_IMAGE : Message.TYPE_FILE));
1337 }
1338
1339 private int getMediaRuntime(File file) {
1340 try {
1341 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
1342 mediaMetadataRetriever.setDataSource(file.toString());
1343 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
1344 } catch (RuntimeException e) {
1345 return 0;
1346 }
1347 }
1348
1349 private Dimensions getImageDimensions(File file) {
1350 BitmapFactory.Options options = new BitmapFactory.Options();
1351 options.inJustDecodeBounds = true;
1352 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
1353 int rotation = getRotation(file);
1354 boolean rotated = rotation == 90 || rotation == 270;
1355 int imageHeight = rotated ? options.outWidth : options.outHeight;
1356 int imageWidth = rotated ? options.outHeight : options.outWidth;
1357 return new Dimensions(imageHeight, imageWidth);
1358 }
1359
1360 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
1361 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
1362 try {
1363 metadataRetriever.setDataSource(file.getAbsolutePath());
1364 } catch (RuntimeException e) {
1365 throw new NotAVideoFile(e);
1366 }
1367 return getVideoDimensions(metadataRetriever);
1368 }
1369
1370 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
1371 private Dimensions getPdfDocumentDimensions(final File file) {
1372 final ParcelFileDescriptor fileDescriptor;
1373 try {
1374 fileDescriptor = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
1375 if (fileDescriptor == null) {
1376 return new Dimensions(0, 0);
1377 }
1378 } catch (FileNotFoundException e) {
1379 return new Dimensions(0, 0);
1380 }
1381 try {
1382 final PdfRenderer pdfRenderer = new PdfRenderer(fileDescriptor);
1383 final PdfRenderer.Page page = pdfRenderer.openPage(0);
1384 final int height = page.getHeight();
1385 final int width = page.getWidth();
1386 page.close();
1387 pdfRenderer.close();
1388 return scalePdfDimensions(new Dimensions(height, width));
1389 } catch (IOException | SecurityException e) {
1390 Log.d(Config.LOGTAG, "unable to get dimensions for pdf document", e);
1391 return new Dimensions(0, 0);
1392 }
1393 }
1394
1395 private Dimensions scalePdfDimensions(Dimensions in) {
1396 final DisplayMetrics displayMetrics = mXmppConnectionService.getResources().getDisplayMetrics();
1397 final int target = (int) (displayMetrics.density * 288);
1398 return scalePdfDimensions(in, target, true);
1399 }
1400
1401 private static Dimensions scalePdfDimensions(final Dimensions in, final int target, final boolean fit) {
1402 final int w, h;
1403 if (fit == (in.width <= in.height)) {
1404 w = Math.max((int) (in.width / ((double) in.height / target)), 1);
1405 h = target;
1406 } else {
1407 w = target;
1408 h = Math.max((int) (in.height / ((double) in.width / target)), 1);
1409 }
1410 return new Dimensions(h, w);
1411 }
1412
1413 public Bitmap getAvatar(String avatar, int size) {
1414 if (avatar == null) {
1415 return null;
1416 }
1417 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1418 return bm;
1419 }
1420
1421 private static class Dimensions {
1422 public final int width;
1423 public final int height;
1424
1425 Dimensions(int height, int width) {
1426 this.width = width;
1427 this.height = height;
1428 }
1429
1430 public int getMin() {
1431 return Math.min(width, height);
1432 }
1433
1434 public boolean valid() {
1435 return width > 0 && height > 0;
1436 }
1437 }
1438
1439 private static class NotAVideoFile extends Exception {
1440 public NotAVideoFile(Throwable t) {
1441 super(t);
1442 }
1443
1444 public NotAVideoFile() {
1445 super();
1446 }
1447 }
1448
1449 public static class ImageCompressionException extends Exception {
1450
1451 ImageCompressionException(String message) {
1452 super(message);
1453 }
1454 }
1455
1456
1457 public static class FileCopyException extends Exception {
1458 private final int resId;
1459
1460 private FileCopyException(int resId) {
1461 this.resId = resId;
1462 }
1463
1464 public int getResId() {
1465 return resId;
1466 }
1467 }
1468}