1package eu.siacs.conversations.persistance;
2
3import android.annotation.TargetApi;
4import android.content.ContentResolver;
5import android.content.Context;
6import android.content.Intent;
7import android.database.Cursor;
8import android.graphics.Bitmap;
9import android.graphics.BitmapFactory;
10import android.graphics.Canvas;
11import android.graphics.Matrix;
12import android.graphics.Paint;
13import android.graphics.RectF;
14import android.media.MediaMetadataRetriever;
15import android.net.Uri;
16import android.os.Build;
17import android.os.Environment;
18import android.os.ParcelFileDescriptor;
19import android.provider.MediaStore;
20import android.provider.OpenableColumns;
21import android.support.v4.content.FileProvider;
22import android.system.Os;
23import android.system.StructStat;
24import android.util.Base64;
25import android.util.Base64OutputStream;
26import android.util.Log;
27import android.util.LruCache;
28import android.webkit.MimeTypeMap;
29
30import java.io.ByteArrayOutputStream;
31import java.io.Closeable;
32import java.io.File;
33import java.io.FileDescriptor;
34import java.io.FileInputStream;
35import java.io.FileNotFoundException;
36import java.io.FileOutputStream;
37import java.io.IOException;
38import java.io.InputStream;
39import java.io.OutputStream;
40import java.net.Socket;
41import java.net.URL;
42import java.security.DigestOutputStream;
43import java.security.MessageDigest;
44import java.security.NoSuchAlgorithmException;
45import java.text.SimpleDateFormat;
46import java.util.Date;
47import java.util.List;
48import java.util.Locale;
49
50import eu.siacs.conversations.Config;
51import eu.siacs.conversations.R;
52import eu.siacs.conversations.entities.DownloadableFile;
53import eu.siacs.conversations.entities.Message;
54import eu.siacs.conversations.services.XmppConnectionService;
55import eu.siacs.conversations.utils.CryptoHelper;
56import eu.siacs.conversations.utils.ExifHelper;
57import eu.siacs.conversations.utils.FileUtils;
58import eu.siacs.conversations.utils.FileWriterException;
59import eu.siacs.conversations.utils.MimeUtils;
60import eu.siacs.conversations.xmpp.pep.Avatar;
61
62public class FileBackend {
63
64 private static final Object THUMBNAIL_LOCK = new Object();
65
66 private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
67
68 public static final String FILE_PROVIDER = ".files";
69
70 private XmppConnectionService mXmppConnectionService;
71
72 public FileBackend(XmppConnectionService service) {
73 this.mXmppConnectionService = service;
74 }
75
76 private void createNoMedia() {
77 final File nomedia = new File(getConversationsDirectory("Files")+".nomedia");
78 if (!nomedia.exists()) {
79 try {
80 nomedia.createNewFile();
81 } catch (Exception e) {
82 Log.d(Config.LOGTAG, "could not create nomedia file");
83 }
84 }
85 }
86
87 public void updateMediaScanner(File file) {
88 String path = file.getAbsolutePath();
89 if (!path.startsWith(getConversationsDirectory("Files"))) {
90 Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
91 intent.setData(Uri.fromFile(file));
92 mXmppConnectionService.sendBroadcast(intent);
93 } else {
94 createNoMedia();
95 }
96 }
97
98 public boolean deleteFile(Message message) {
99 File file = getFile(message);
100 if (file.delete()) {
101 updateMediaScanner(file);
102 return true;
103 } else {
104 return false;
105 }
106 }
107
108 public DownloadableFile getFile(Message message) {
109 return getFile(message, true);
110 }
111
112 public DownloadableFile getFile(Message message, boolean decrypted) {
113 final boolean encrypted = !decrypted
114 && (message.getEncryption() == Message.ENCRYPTION_PGP
115 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
116 final DownloadableFile file;
117 String path = message.getRelativeFilePath();
118 if (path == null) {
119 path = message.getUuid();
120 }
121 if (path.startsWith("/")) {
122 file = new DownloadableFile(path);
123 } else {
124 String mime = message.getMimeType();
125 if (mime != null && mime.startsWith("image/")) {
126 file = new DownloadableFile(getConversationsDirectory("Images") + path);
127 } else if (mime != null && mime.startsWith("video/")) {
128 file = new DownloadableFile(getConversationsDirectory("Videos") + path);
129 } else {
130 file = new DownloadableFile(getConversationsDirectory("Files") + path);
131 }
132 }
133 if (encrypted) {
134 return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
135 } else {
136 return file;
137 }
138 }
139
140 public static long getFileSize(Context context, Uri uri) {
141 try {
142 final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
143 if (cursor != null && cursor.moveToFirst()) {
144 long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
145 cursor.close();
146 return size;
147 } else {
148 return -1;
149 }
150 } catch (Exception e) {
151 return -1;
152 }
153 }
154
155 public static boolean allFilesUnderSize(Context context, List<Uri> uris, long max) {
156 if (max <= 0) {
157 Log.d(Config.LOGTAG,"server did not report max file size for http upload");
158 return true; //exception to be compatible with HTTP Upload < v0.2
159 }
160 for(Uri uri : uris) {
161 String mime = context.getContentResolver().getType(uri);
162 if (mime != null && mime.startsWith("video/")) {
163 try {
164 Dimensions dimensions = FileBackend.getVideoDimensions(context,uri);
165 if (dimensions.getMin() > 720) {
166 Log.d(Config.LOGTAG,"do not consider video file with min width larger than 720 for size check");
167 continue;
168 }
169 } catch (NotAVideoFile notAVideoFile) {
170 //ignore and fall through
171 }
172 }
173 if (FileBackend.getFileSize(context, uri) > max) {
174 Log.d(Config.LOGTAG,"not all files are under "+max+" bytes. suggesting falling back to jingle");
175 return false;
176 }
177 }
178 return true;
179 }
180
181 public String getConversationsDirectory(final String type) {
182 if (Config.ONLY_INTERNAL_STORAGE) {
183 return mXmppConnectionService.getFilesDir().getAbsolutePath()+"/"+type+"/";
184 } else {
185 return Environment.getExternalStorageDirectory() +"/Conversations/Media/Conversations "+type+"/";
186 }
187 }
188
189 public static String getConversationsLogsDirectory() {
190 return Environment.getExternalStorageDirectory().getAbsolutePath()+"/Conversations/";
191 }
192
193 public Bitmap resize(Bitmap originalBitmap, int size) {
194 int w = originalBitmap.getWidth();
195 int h = originalBitmap.getHeight();
196 if (Math.max(w, h) > size) {
197 int scalledW;
198 int scalledH;
199 if (w <= h) {
200 scalledW = (int) (w / ((double) h / size));
201 scalledH = size;
202 } else {
203 scalledW = size;
204 scalledH = (int) (h / ((double) w / size));
205 }
206 Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
207 if (originalBitmap != null && !originalBitmap.isRecycled()) {
208 originalBitmap.recycle();
209 }
210 return result;
211 } else {
212 return originalBitmap;
213 }
214 }
215
216 public static Bitmap rotate(Bitmap bitmap, int degree) {
217 if (degree == 0) {
218 return bitmap;
219 }
220 int w = bitmap.getWidth();
221 int h = bitmap.getHeight();
222 Matrix mtx = new Matrix();
223 mtx.postRotate(degree);
224 Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
225 if (bitmap != null && !bitmap.isRecycled()) {
226 bitmap.recycle();
227 }
228 return result;
229 }
230
231 public boolean useImageAsIs(Uri uri) {
232 String path = getOriginalPath(uri);
233 if (path == null) {
234 return false;
235 }
236 File file = new File(path);
237 long size = file.length();
238 if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
239 return false;
240 }
241 BitmapFactory.Options options = new BitmapFactory.Options();
242 options.inJustDecodeBounds = true;
243 try {
244 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
245 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
246 return false;
247 }
248 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
249 } catch (FileNotFoundException e) {
250 return false;
251 }
252 }
253
254 public String getOriginalPath(Uri uri) {
255 return FileUtils.getPath(mXmppConnectionService,uri);
256 }
257
258 public void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
259 Log.d(Config.LOGTAG,"copy file ("+uri.toString()+") to private storage "+file.getAbsolutePath());
260 file.getParentFile().mkdirs();
261 OutputStream os = null;
262 InputStream is = null;
263 try {
264 file.createNewFile();
265 os = new FileOutputStream(file);
266 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
267 byte[] buffer = new byte[1024];
268 int length;
269 while ((length = is.read(buffer)) > 0) {
270 try {
271 os.write(buffer, 0, length);
272 } catch (IOException e) {
273 throw new FileWriterException();
274 }
275 }
276 try {
277 os.flush();
278 } catch (IOException e) {
279 throw new FileWriterException();
280 }
281 } catch(FileNotFoundException e) {
282 throw new FileCopyException(R.string.error_file_not_found);
283 } catch(FileWriterException e) {
284 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
285 } catch (IOException e) {
286 e.printStackTrace();
287 throw new FileCopyException(R.string.error_io_exception);
288 } finally {
289 close(os);
290 close(is);
291 }
292 }
293
294 public void copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
295 String mime = MimeUtils.guessMimeTypeFromUri(mXmppConnectionService, uri);
296 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime="+mime+")");
297 String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
298 if (extension == null) {
299 extension = getExtensionFromUri(uri);
300 }
301 message.setRelativeFilePath(message.getUuid() + "." + extension);
302 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
303 }
304
305 private String getExtensionFromUri(Uri uri) {
306 String[] projection = {MediaStore.MediaColumns.DATA};
307 String filename = null;
308 Cursor cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
309 if (cursor != null) {
310 try {
311 if (cursor.moveToFirst()) {
312 filename = cursor.getString(0);
313 }
314 } catch (Exception e) {
315 filename = null;
316 } finally {
317 cursor.close();
318 }
319 }
320 int pos = filename == null ? -1 : filename.lastIndexOf('.');
321 return pos > 0 ? filename.substring(pos+1) : null;
322 }
323
324 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
325 file.getParentFile().mkdirs();
326 InputStream is = null;
327 OutputStream os = null;
328 try {
329 if (!file.exists() && !file.createNewFile()) {
330 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
331 }
332 is = mXmppConnectionService.getContentResolver().openInputStream(image);
333 if (is == null) {
334 throw new FileCopyException(R.string.error_not_an_image_file);
335 }
336 Bitmap originalBitmap;
337 BitmapFactory.Options options = new BitmapFactory.Options();
338 int inSampleSize = (int) Math.pow(2, sampleSize);
339 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
340 options.inSampleSize = inSampleSize;
341 originalBitmap = BitmapFactory.decodeStream(is, null, options);
342 is.close();
343 if (originalBitmap == null) {
344 throw new FileCopyException(R.string.error_not_an_image_file);
345 }
346 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
347 int rotation = getRotation(image);
348 scaledBitmap = rotate(scaledBitmap, rotation);
349 boolean targetSizeReached = false;
350 int quality = Config.IMAGE_QUALITY;
351 final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
352 while(!targetSizeReached) {
353 os = new FileOutputStream(file);
354 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
355 if (!success) {
356 throw new FileCopyException(R.string.error_compressing_image);
357 }
358 os.flush();
359 targetSizeReached = file.length() <= imageMaxSize|| quality <= 50;
360 quality -= 5;
361 }
362 scaledBitmap.recycle();
363 } catch (FileNotFoundException e) {
364 throw new FileCopyException(R.string.error_file_not_found);
365 } catch (IOException e) {
366 e.printStackTrace();
367 throw new FileCopyException(R.string.error_io_exception);
368 } catch (SecurityException e) {
369 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
370 } catch (OutOfMemoryError e) {
371 ++sampleSize;
372 if (sampleSize <= 3) {
373 copyImageToPrivateStorage(file, image, sampleSize);
374 } else {
375 throw new FileCopyException(R.string.error_out_of_memory);
376 }
377 } finally {
378 close(os);
379 close(is);
380 }
381 }
382
383 public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
384 Log.d(Config.LOGTAG,"copy image ("+image.toString()+") to private storage "+file.getAbsolutePath());
385 copyImageToPrivateStorage(file, image, 0);
386 }
387
388 public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
389 switch(Config.IMAGE_FORMAT) {
390 case JPEG:
391 message.setRelativeFilePath(message.getUuid()+".jpg");
392 break;
393 case PNG:
394 message.setRelativeFilePath(message.getUuid()+".png");
395 break;
396 case WEBP:
397 message.setRelativeFilePath(message.getUuid()+".webp");
398 break;
399 }
400 copyImageToPrivateStorage(getFile(message), image);
401 updateFileParams(message);
402 }
403
404 private int getRotation(File file) {
405 return getRotation(Uri.parse("file://"+file.getAbsolutePath()));
406 }
407
408 private int getRotation(Uri image) {
409 InputStream is = null;
410 try {
411 is = mXmppConnectionService.getContentResolver().openInputStream(image);
412 return ExifHelper.getOrientation(is);
413 } catch (FileNotFoundException e) {
414 return 0;
415 } finally {
416 close(is);
417 }
418 }
419
420 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws FileNotFoundException {
421 final String uuid = message.getUuid();
422 final LruCache<String,Bitmap> cache = mXmppConnectionService.getBitmapCache();
423 Bitmap thumbnail = cache.get(uuid);
424 if ((thumbnail == null) && (!cacheOnly)) {
425 synchronized (THUMBNAIL_LOCK) {
426 thumbnail = cache.get(uuid);
427 if (thumbnail != null) {
428 return thumbnail;
429 }
430 DownloadableFile file = getFile(message);
431 final String mime = file.getMimeType();
432 if (mime.startsWith("video/")) {
433 thumbnail = getVideoPreview(file, size);
434 } else {
435 Bitmap fullsize = getFullsizeImagePreview(file, size);
436 if (fullsize == null) {
437 throw new FileNotFoundException();
438 }
439 thumbnail = resize(fullsize, size);
440 thumbnail = rotate(thumbnail, getRotation(file));
441 if (mime.equals("image/gif")) {
442 Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888,true);
443 drawOverlay(withGifOverlay,R.drawable.play_gif,1.0f);
444 thumbnail.recycle();
445 thumbnail = withGifOverlay;
446 }
447 }
448 this.mXmppConnectionService.getBitmapCache().put(uuid, thumbnail);
449 }
450 }
451 return thumbnail;
452 }
453
454 private Bitmap getFullsizeImagePreview(File file, int size) {
455 BitmapFactory.Options options = new BitmapFactory.Options();
456 options.inSampleSize = calcSampleSize(file, size);
457 try {
458 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
459 } catch (OutOfMemoryError e) {
460 options.inSampleSize *= 2;
461 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
462 }
463 }
464
465 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
466 Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
467 Canvas canvas = new Canvas(bitmap);
468 Paint paint = new Paint();
469 paint.setAntiAlias(true);
470 paint.setFilterBitmap(true);
471 paint.setDither(true);
472 float targetSize = Math.min(canvas.getWidth(),canvas.getHeight()) * factor;
473 Log.d(Config.LOGTAG,"target size overlay: "+targetSize+" overlay bitmap size was "+overlay.getHeight());
474 float left = (canvas.getWidth() - targetSize) / 2.0f;
475 float top = (canvas.getHeight() - targetSize) / 2.0f;
476 RectF dst = new RectF(left,top,left+targetSize-1,top+targetSize-1);
477 canvas.drawBitmap(overlay,null,dst,paint);
478 }
479
480 private Bitmap getVideoPreview(File file, int size) {
481 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
482 Bitmap frame;
483 try {
484 metadataRetriever.setDataSource(file.getAbsolutePath());
485 frame = metadataRetriever.getFrameAtTime(0);
486 metadataRetriever.release();
487 frame = resize(frame, size);
488 } catch(RuntimeException e) {
489 frame = Bitmap.createBitmap(size,size, Bitmap.Config.ARGB_8888);
490 frame.eraseColor(0xff000000);
491 }
492 drawOverlay(frame,R.drawable.play_video,0.75f);
493 return frame;
494 }
495
496 private static String getTakePhotoPath() {
497 return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)+"/Camera/";
498 }
499
500 public Uri getTakePhotoUri() {
501 File file;
502 if (Config.ONLY_INTERNAL_STORAGE) {
503 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
504 } else {
505 file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
506 }
507 file.getParentFile().mkdirs();
508 return getUriForFile(mXmppConnectionService,file);
509 }
510
511 public static Uri getUriForFile(Context context, File file) {
512 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
513 try {
514 String packageId = context.getPackageName();
515 return FileProvider.getUriForFile(context, packageId + FILE_PROVIDER, file);
516 } catch(IllegalArgumentException e) {
517 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
518 throw new SecurityException(e);
519 } else {
520 return Uri.fromFile(file);
521 }
522 }
523 } else {
524 return Uri.fromFile(file);
525 }
526 }
527
528 public static Uri getIndexableTakePhotoUri(Uri original) {
529 if (Config.ONLY_INTERNAL_STORAGE || "file".equals(original.getScheme())) {
530 return original;
531 } else {
532 List<String> segments = original.getPathSegments();
533 return Uri.parse("file://"+getTakePhotoPath()+segments.get(segments.size() - 1));
534 }
535 }
536
537 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
538 try {
539 Avatar avatar = new Avatar();
540 Bitmap bm = cropCenterSquare(image, size);
541 if (bm == null) {
542 return null;
543 }
544 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
545 Base64OutputStream mBase64OutputStream = new Base64OutputStream(
546 mByteArrayOutputStream, Base64.DEFAULT);
547 MessageDigest digest = MessageDigest.getInstance("SHA-1");
548 DigestOutputStream mDigestOutputStream = new DigestOutputStream(
549 mBase64OutputStream, digest);
550 if (!bm.compress(format, 75, mDigestOutputStream)) {
551 return null;
552 }
553 mDigestOutputStream.flush();
554 mDigestOutputStream.close();
555 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
556 avatar.image = new String(mByteArrayOutputStream.toByteArray());
557 return avatar;
558 } catch (NoSuchAlgorithmException e) {
559 return null;
560 } catch (IOException e) {
561 return null;
562 }
563 }
564
565 public Avatar getStoredPepAvatar(String hash) {
566 if (hash == null) {
567 return null;
568 }
569 Avatar avatar = new Avatar();
570 File file = new File(getAvatarPath(hash));
571 FileInputStream is = null;
572 try {
573 avatar.size = file.length();
574 BitmapFactory.Options options = new BitmapFactory.Options();
575 options.inJustDecodeBounds = true;
576 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
577 is = new FileInputStream(file);
578 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
579 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
580 MessageDigest digest = MessageDigest.getInstance("SHA-1");
581 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
582 byte[] buffer = new byte[4096];
583 int length;
584 while ((length = is.read(buffer)) > 0) {
585 os.write(buffer, 0, length);
586 }
587 os.flush();
588 os.close();
589 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
590 avatar.image = new String(mByteArrayOutputStream.toByteArray());
591 avatar.height = options.outHeight;
592 avatar.width = options.outWidth;
593 avatar.type = options.outMimeType;
594 return avatar;
595 } catch (IOException e) {
596 return null;
597 } catch (NoSuchAlgorithmException e) {
598 return null;
599 } finally {
600 close(is);
601 }
602 }
603
604 public boolean isAvatarCached(Avatar avatar) {
605 File file = new File(getAvatarPath(avatar.getFilename()));
606 return file.exists();
607 }
608
609 public boolean save(Avatar avatar) {
610 File file;
611 if (isAvatarCached(avatar)) {
612 file = new File(getAvatarPath(avatar.getFilename()));
613 avatar.size = file.length();
614 } else {
615 String filename = getAvatarPath(avatar.getFilename());
616 file = new File(filename + ".tmp");
617 file.getParentFile().mkdirs();
618 OutputStream os = null;
619 try {
620 file.createNewFile();
621 os = new FileOutputStream(file);
622 MessageDigest digest = MessageDigest.getInstance("SHA-1");
623 digest.reset();
624 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
625 final byte[] bytes = avatar.getImageAsBytes();
626 mDigestOutputStream.write(bytes);
627 mDigestOutputStream.flush();
628 mDigestOutputStream.close();
629 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
630 if (sha1sum.equals(avatar.sha1sum)) {
631 file.renameTo(new File(filename));
632 } else {
633 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
634 file.delete();
635 return false;
636 }
637 avatar.size = bytes.length;
638 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
639 return false;
640 } finally {
641 close(os);
642 }
643 }
644 return true;
645 }
646
647 public String getAvatarPath(String avatar) {
648 return mXmppConnectionService.getFilesDir().getAbsolutePath()+ "/avatars/" + avatar;
649 }
650
651 public Uri getAvatarUri(String avatar) {
652 return Uri.parse("file:" + getAvatarPath(avatar));
653 }
654
655 public Bitmap cropCenterSquare(Uri image, int size) {
656 if (image == null) {
657 return null;
658 }
659 InputStream is = null;
660 try {
661 BitmapFactory.Options options = new BitmapFactory.Options();
662 options.inSampleSize = calcSampleSize(image, size);
663 is = mXmppConnectionService.getContentResolver().openInputStream(image);
664 if (is == null) {
665 return null;
666 }
667 Bitmap input = BitmapFactory.decodeStream(is, null, options);
668 if (input == null) {
669 return null;
670 } else {
671 input = rotate(input, getRotation(image));
672 return cropCenterSquare(input, size);
673 }
674 } catch (SecurityException e) {
675 return null; // happens for example on Android 6.0 if contacts permissions get revoked
676 } catch (FileNotFoundException e) {
677 return null;
678 } finally {
679 close(is);
680 }
681 }
682
683 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
684 if (image == null) {
685 return null;
686 }
687 InputStream is = null;
688 try {
689 BitmapFactory.Options options = new BitmapFactory.Options();
690 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
691 is = mXmppConnectionService.getContentResolver().openInputStream(image);
692 if (is == null) {
693 return null;
694 }
695 Bitmap source = BitmapFactory.decodeStream(is, null, options);
696 if (source == null) {
697 return null;
698 }
699 int sourceWidth = source.getWidth();
700 int sourceHeight = source.getHeight();
701 float xScale = (float) newWidth / sourceWidth;
702 float yScale = (float) newHeight / sourceHeight;
703 float scale = Math.max(xScale, yScale);
704 float scaledWidth = scale * sourceWidth;
705 float scaledHeight = scale * sourceHeight;
706 float left = (newWidth - scaledWidth) / 2;
707 float top = (newHeight - scaledHeight) / 2;
708
709 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
710 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
711 Canvas canvas = new Canvas(dest);
712 canvas.drawBitmap(source, null, targetRect, null);
713 if (source.isRecycled()) {
714 source.recycle();
715 }
716 return dest;
717 } catch (SecurityException e) {
718 return null; //android 6.0 with revoked permissions for example
719 } catch (FileNotFoundException e) {
720 return null;
721 } finally {
722 close(is);
723 }
724 }
725
726 public Bitmap cropCenterSquare(Bitmap input, int size) {
727 int w = input.getWidth();
728 int h = input.getHeight();
729
730 float scale = Math.max((float) size / h, (float) size / w);
731
732 float outWidth = scale * w;
733 float outHeight = scale * h;
734 float left = (size - outWidth) / 2;
735 float top = (size - outHeight) / 2;
736 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
737
738 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
739 Canvas canvas = new Canvas(output);
740 canvas.drawBitmap(input, null, target, null);
741 if (input != null && !input.isRecycled()) {
742 input.recycle();
743 }
744 return output;
745 }
746
747 private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
748 BitmapFactory.Options options = new BitmapFactory.Options();
749 options.inJustDecodeBounds = true;
750 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
751 return calcSampleSize(options, size);
752 }
753
754 private static int calcSampleSize(File image, int size) {
755 BitmapFactory.Options options = new BitmapFactory.Options();
756 options.inJustDecodeBounds = true;
757 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
758 return calcSampleSize(options, size);
759 }
760
761 public static int calcSampleSize(BitmapFactory.Options options, int size) {
762 int height = options.outHeight;
763 int width = options.outWidth;
764 int inSampleSize = 1;
765
766 if (height > size || width > size) {
767 int halfHeight = height / 2;
768 int halfWidth = width / 2;
769
770 while ((halfHeight / inSampleSize) > size
771 && (halfWidth / inSampleSize) > size) {
772 inSampleSize *= 2;
773 }
774 }
775 return inSampleSize;
776 }
777
778 public void updateFileParams(Message message) {
779 updateFileParams(message,null);
780 }
781
782 public void updateFileParams(Message message, URL url) {
783 DownloadableFile file = getFile(message);
784 final String mime = file.getMimeType();
785 boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
786 boolean video = mime != null && mime.startsWith("video/");
787 boolean audio = mime != null && mime.startsWith("audio/");
788 final StringBuilder body = new StringBuilder();
789 if (url != null) {
790 body.append(url.toString());
791 }
792 body.append('|').append(file.getSize());
793 if (image || video) {
794 try {
795 Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
796 body.append('|').append(dimensions.width).append('|').append(dimensions.height);
797 } catch (NotAVideoFile notAVideoFile) {
798 Log.d(Config.LOGTAG,"file with mime type "+file.getMimeType()+" was not a video file");
799 //fall threw
800 }
801 } else if (audio) {
802 body.append("|0|0|").append(getMediaRuntime(file));
803 }
804 message.setBody(body.toString());
805 }
806
807 public int getMediaRuntime(Uri uri) {
808 try {
809 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
810 mediaMetadataRetriever.setDataSource(mXmppConnectionService,uri);
811 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
812 } catch (RuntimeException e) {
813 return 0;
814 }
815 }
816
817 private int getMediaRuntime(File file) {
818 try {
819 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
820 mediaMetadataRetriever.setDataSource(file.toString());
821 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
822 } catch (RuntimeException e) {
823 return 0;
824 }
825 }
826
827 private Dimensions getImageDimensions(File file) {
828 BitmapFactory.Options options = new BitmapFactory.Options();
829 options.inJustDecodeBounds = true;
830 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
831 int rotation = getRotation(file);
832 boolean rotated = rotation == 90 || rotation == 270;
833 int imageHeight = rotated ? options.outWidth : options.outHeight;
834 int imageWidth = rotated ? options.outHeight : options.outWidth;
835 return new Dimensions(imageHeight, imageWidth);
836 }
837
838 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
839 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
840 try {
841 metadataRetriever.setDataSource(file.getAbsolutePath());
842 } catch (RuntimeException e) {
843 throw new NotAVideoFile(e);
844 }
845 return getVideoDimensions(metadataRetriever);
846 }
847
848 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
849 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
850 try {
851 mediaMetadataRetriever.setDataSource(context, uri);
852 } catch (RuntimeException e) {
853 throw new NotAVideoFile(e);
854 }
855 return getVideoDimensions(mediaMetadataRetriever);
856 }
857
858 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
859 String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
860 if (hasVideo == null) {
861 throw new NotAVideoFile();
862 }
863 int rotation = extractRotationFromMediaRetriever(metadataRetriever);
864 boolean rotated = rotation == 90 || rotation == 270;
865 int height;
866 try {
867 String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
868 height = Integer.parseInt(h);
869 } catch (Exception e) {
870 height = -1;
871 }
872 int width;
873 try {
874 String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
875 width = Integer.parseInt(w);
876 } catch (Exception e) {
877 width = -1;
878 }
879 metadataRetriever.release();
880 Log.d(Config.LOGTAG,"extracted video dims "+width+"x"+height);
881 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
882 }
883
884 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
885 int rotation;
886 if (Build.VERSION.SDK_INT >= 17) {
887 String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
888 try {
889 rotation = Integer.parseInt(r);
890 } catch (Exception e) {
891 rotation = 0;
892 }
893 } else {
894 rotation = 0;
895 }
896 return rotation;
897 }
898
899 private static class Dimensions {
900 public final int width;
901 public final int height;
902
903 public Dimensions(int height, int width) {
904 this.width = width;
905 this.height = height;
906 }
907
908 public int getMin() {
909 return Math.min(width,height);
910 }
911 }
912
913 private static class NotAVideoFile extends Exception {
914 public NotAVideoFile(Throwable t) {
915 super(t);
916 }
917
918 public NotAVideoFile() {
919 super();
920 }
921 }
922
923 public class FileCopyException extends Exception {
924 private static final long serialVersionUID = -1010013599132881427L;
925 private int resId;
926
927 public FileCopyException(int resId) {
928 this.resId = resId;
929 }
930
931 public int getResId() {
932 return resId;
933 }
934 }
935
936 public Bitmap getAvatar(String avatar, int size) {
937 if (avatar == null) {
938 return null;
939 }
940 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
941 if (bm == null) {
942 return null;
943 }
944 return bm;
945 }
946
947 public boolean isFileAvailable(Message message) {
948 return getFile(message).exists();
949 }
950
951 public static void close(Closeable stream) {
952 if (stream != null) {
953 try {
954 stream.close();
955 } catch (IOException e) {
956 }
957 }
958 }
959
960 public static void close(Socket socket) {
961 if (socket != null) {
962 try {
963 socket.close();
964 } catch (IOException e) {
965 }
966 }
967 }
968
969
970 public static boolean weOwnFile(Context context, Uri uri) {
971 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
972 return false;
973 } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
974 return fileIsInFilesDir(context, uri);
975 } else {
976 return weOwnFileLollipop(uri);
977 }
978 }
979
980
981 /**
982 * This is more than hacky but probably way better than doing nothing
983 * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
984 * and check against those as well
985 */
986 private static boolean fileIsInFilesDir(Context context, Uri uri) {
987 try {
988 final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
989 final String needle = new File(uri.getPath()).getCanonicalPath();
990 return needle.startsWith(haystack);
991 } catch (IOException e) {
992 return false;
993 }
994 }
995
996 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
997 private static boolean weOwnFileLollipop(Uri uri) {
998 try {
999 File file = new File(uri.getPath());
1000 FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
1001 StructStat st = Os.fstat(fd);
1002 return st.st_uid == android.os.Process.myUid();
1003 } catch (FileNotFoundException e) {
1004 return false;
1005 } catch (Exception e) {
1006 return true;
1007 }
1008 }
1009}