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.Color;
12import android.graphics.Matrix;
13import android.graphics.Paint;
14import android.graphics.RectF;
15import android.media.MediaMetadataRetriever;
16import android.net.Uri;
17import android.os.Build;
18import android.os.Environment;
19import android.os.ParcelFileDescriptor;
20import android.provider.MediaStore;
21import android.provider.OpenableColumns;
22import android.support.v4.content.FileProvider;
23import android.system.Os;
24import android.system.StructStat;
25import android.util.Base64;
26import android.util.Base64OutputStream;
27import android.util.Log;
28import android.util.LruCache;
29import android.webkit.MimeTypeMap;
30
31import java.io.ByteArrayOutputStream;
32import java.io.Closeable;
33import java.io.File;
34import java.io.FileDescriptor;
35import java.io.FileInputStream;
36import java.io.FileNotFoundException;
37import java.io.FileOutputStream;
38import java.io.IOException;
39import java.io.InputStream;
40import java.io.OutputStream;
41import java.net.Socket;
42import java.net.URL;
43import java.security.DigestOutputStream;
44import java.security.MessageDigest;
45import java.security.NoSuchAlgorithmException;
46import java.text.SimpleDateFormat;
47import java.util.Arrays;
48import java.util.Date;
49import java.util.List;
50import java.util.Locale;
51import java.util.UUID;
52
53import eu.siacs.conversations.Config;
54import eu.siacs.conversations.R;
55import eu.siacs.conversations.entities.DownloadableFile;
56import eu.siacs.conversations.entities.Message;
57import eu.siacs.conversations.services.XmppConnectionService;
58import eu.siacs.conversations.ui.RecordingActivity;
59import eu.siacs.conversations.utils.CryptoHelper;
60import eu.siacs.conversations.utils.ExifHelper;
61import eu.siacs.conversations.utils.FileUtils;
62import eu.siacs.conversations.utils.FileWriterException;
63import eu.siacs.conversations.utils.MimeUtils;
64import eu.siacs.conversations.xmpp.pep.Avatar;
65
66public class FileBackend {
67
68 private static final Object THUMBNAIL_LOCK = new Object();
69
70 private static final SimpleDateFormat IMAGE_DATE_FORMAT = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US);
71
72 private static final String FILE_PROVIDER = ".files";
73
74 private XmppConnectionService mXmppConnectionService;
75
76 public FileBackend(XmppConnectionService service) {
77 this.mXmppConnectionService = service;
78 }
79
80 private void createNoMedia(File diretory) {
81 final File noMedia = new File(diretory,".nomedia");
82 if (!noMedia.exists()) {
83 try {
84 if (!noMedia.createNewFile()) {
85 Log.d(Config.LOGTAG,"created nomedia file "+noMedia.getAbsolutePath());
86 }
87 } catch (Exception e) {
88 Log.d(Config.LOGTAG, "could not create nomedia file");
89 }
90 }
91 }
92
93 public void updateMediaScanner(File file) {
94 if (!isInDirectoryThatShouldNotBeScanned(mXmppConnectionService, file)) {
95 Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
96 intent.setData(Uri.fromFile(file));
97 mXmppConnectionService.sendBroadcast(intent);
98 } else if (file.getAbsolutePath().startsWith(getAppMediaDirectory(mXmppConnectionService))) {
99 createNoMedia(file.getParentFile());
100 }
101 }
102
103 private static boolean isInDirectoryThatShouldNotBeScanned(Context context, File file) {
104 return isInDirectoryThatShouldNotBeScanned(context, file.getAbsolutePath());
105 }
106
107 public static boolean isInDirectoryThatShouldNotBeScanned(Context context, String path) {
108 for(String type : new String[]{RecordingActivity.STORAGE_DIRECTORY_TYPE_NAME, "Files"}) {
109 if (path.startsWith(getConversationsDirectory(context, type))) {
110 return true;
111 }
112 }
113 return false;
114 }
115
116 public boolean deleteFile(Message message) {
117 File file = getFile(message);
118 if (file.delete()) {
119 updateMediaScanner(file);
120 return true;
121 } else {
122 return false;
123 }
124 }
125
126 public DownloadableFile getFile(Message message) {
127 return getFile(message, true);
128 }
129
130 public DownloadableFile getFileForPath(String path, String mime) {
131 final DownloadableFile file;
132 if (path.startsWith("/")) {
133 file = new DownloadableFile(path);
134 } else {
135 if (mime != null && mime.startsWith("image/")) {
136 file = new DownloadableFile(getConversationsDirectory("Images") + path);
137 } else if (mime != null && mime.startsWith("video/")) {
138 file = new DownloadableFile(getConversationsDirectory("Videos") + path);
139 } else {
140 file = new DownloadableFile(getConversationsDirectory("Files") + path);
141 }
142 }
143 return file;
144 }
145
146 public DownloadableFile getFile(Message message, boolean decrypted) {
147 final boolean encrypted = !decrypted
148 && (message.getEncryption() == Message.ENCRYPTION_PGP
149 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
150 String path = message.getRelativeFilePath();
151 if (path == null) {
152 path = message.getUuid();
153 }
154 final DownloadableFile file = getFileForPath(path, message.getMimeType());
155 if (encrypted) {
156 return new DownloadableFile(getConversationsDirectory("Files") + file.getName() + ".pgp");
157 } else {
158 return file;
159 }
160 }
161
162 public static long getFileSize(Context context, Uri uri) {
163 try {
164 final Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
165 if (cursor != null && cursor.moveToFirst()) {
166 long size = cursor.getLong(cursor.getColumnIndex(OpenableColumns.SIZE));
167 cursor.close();
168 return size;
169 } else {
170 return -1;
171 }
172 } catch (Exception e) {
173 return -1;
174 }
175 }
176
177 public static boolean allFilesUnderSize(Context context, List<Uri> uris, long max) {
178 if (max <= 0) {
179 Log.d(Config.LOGTAG, "server did not report max file size for http upload");
180 return true; //exception to be compatible with HTTP Upload < v0.2
181 }
182 for (Uri uri : uris) {
183 String mime = context.getContentResolver().getType(uri);
184 if (mime != null && mime.startsWith("video/")) {
185 try {
186 Dimensions dimensions = FileBackend.getVideoDimensions(context, uri);
187 if (dimensions.getMin() > 720) {
188 Log.d(Config.LOGTAG, "do not consider video file with min width larger than 720 for size check");
189 continue;
190 }
191 } catch (NotAVideoFile notAVideoFile) {
192 //ignore and fall through
193 }
194 }
195 if (FileBackend.getFileSize(context, uri) > max) {
196 Log.d(Config.LOGTAG, "not all files are under " + max + " bytes. suggesting falling back to jingle");
197 return false;
198 }
199 }
200 return true;
201 }
202
203 public String getConversationsDirectory(final String type) {
204 return getConversationsDirectory(mXmppConnectionService, type);
205 }
206
207 public static String getConversationsDirectory(Context context, final String type) {
208 if (Config.ONLY_INTERNAL_STORAGE) {
209 return context.getFilesDir().getAbsolutePath() + "/" + type + "/";
210 } else {
211 return getAppMediaDirectory(context)+context.getString(R.string.app_name)+" " + type + "/";
212 }
213 }
214
215 public static String getAppMediaDirectory(Context context) {
216 return Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+context.getString(R.string.app_name)+"/Media/";
217 }
218
219 public static String getConversationsLogsDirectory() {
220 return Environment.getExternalStorageDirectory().getAbsolutePath() + "/Conversations/";
221 }
222
223 public Bitmap resize(Bitmap originalBitmap, int size) {
224 int w = originalBitmap.getWidth();
225 int h = originalBitmap.getHeight();
226 if (Math.max(w, h) > size) {
227 int scalledW;
228 int scalledH;
229 if (w <= h) {
230 scalledW = (int) (w / ((double) h / size));
231 scalledH = size;
232 } else {
233 scalledW = size;
234 scalledH = (int) (h / ((double) w / size));
235 }
236 Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
237 if (originalBitmap != null && !originalBitmap.isRecycled()) {
238 originalBitmap.recycle();
239 }
240 return result;
241 } else {
242 return originalBitmap;
243 }
244 }
245
246 private static Bitmap rotate(Bitmap bitmap, int degree) {
247 if (degree == 0) {
248 return bitmap;
249 }
250 int w = bitmap.getWidth();
251 int h = bitmap.getHeight();
252 Matrix mtx = new Matrix();
253 mtx.postRotate(degree);
254 Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
255 if (bitmap != null && !bitmap.isRecycled()) {
256 bitmap.recycle();
257 }
258 return result;
259 }
260
261
262 public boolean useImageAsIs(Uri uri) {
263 String path = getOriginalPath(uri);
264 if (path == null || isPathBlacklisted(path)) {
265 return false;
266 }
267 File file = new File(path);
268 long size = file.length();
269 if (size == 0 || size >= mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize)) {
270 return false;
271 }
272 BitmapFactory.Options options = new BitmapFactory.Options();
273 options.inJustDecodeBounds = true;
274 try {
275 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
276 if (options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
277 return false;
278 }
279 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
280 } catch (FileNotFoundException e) {
281 return false;
282 }
283 }
284
285 public static boolean isPathBlacklisted(String path) {
286 final String androidDataPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Android/data/";
287 return path.startsWith(androidDataPath);
288 }
289
290 public String getOriginalPath(Uri uri) {
291 return FileUtils.getPath(mXmppConnectionService, uri);
292 }
293
294 private void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
295 Log.d(Config.LOGTAG, "copy file (" + uri.toString() + ") to private storage " + file.getAbsolutePath());
296 file.getParentFile().mkdirs();
297 OutputStream os = null;
298 InputStream is = null;
299 try {
300 file.createNewFile();
301 os = new FileOutputStream(file);
302 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
303 byte[] buffer = new byte[1024];
304 int length;
305 while ((length = is.read(buffer)) > 0) {
306 try {
307 os.write(buffer, 0, length);
308 } catch (IOException e) {
309 throw new FileWriterException();
310 }
311 }
312 try {
313 os.flush();
314 } catch (IOException e) {
315 throw new FileWriterException();
316 }
317 } catch (FileNotFoundException e) {
318 throw new FileCopyException(R.string.error_file_not_found);
319 } catch (FileWriterException e) {
320 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
321 } catch (IOException e) {
322 e.printStackTrace();
323 throw new FileCopyException(R.string.error_io_exception);
324 } finally {
325 close(os);
326 close(is);
327 }
328 }
329
330 public void copyFileToPrivateStorage(Message message, Uri uri, String type) throws FileCopyException {
331 String mime = type != null ? type : MimeUtils.guessMimeTypeFromUri(mXmppConnectionService, uri);
332 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage (mime=" + mime + ")");
333 String extension = MimeUtils.guessExtensionFromMimeType(mime);
334 if (extension == null) {
335 Log.d(Config.LOGTAG,"extension from mime type was null");
336 extension = getExtensionFromUri(uri);
337 }
338 if ("ogg".equals(extension) && type != null && type.startsWith("audio/")) {
339 extension = "oga";
340 }
341 message.setRelativeFilePath(message.getUuid() + "." + extension);
342 copyFileToPrivateStorage(mXmppConnectionService.getFileBackend().getFile(message), uri);
343 }
344
345 private String getExtensionFromUri(Uri uri) {
346 String[] projection = {MediaStore.MediaColumns.DATA};
347 String filename = null;
348 Cursor cursor = mXmppConnectionService.getContentResolver().query(uri, projection, null, null, null);
349 if (cursor != null) {
350 try {
351 if (cursor.moveToFirst()) {
352 filename = cursor.getString(0);
353 }
354 } catch (Exception e) {
355 filename = null;
356 } finally {
357 cursor.close();
358 }
359 }
360 if (filename == null) {
361 final List<String> segments = uri.getPathSegments();
362 if (segments.size() > 0) {
363 filename = segments.get(segments.size() -1);
364 }
365 }
366 int pos = filename == null ? -1 : filename.lastIndexOf('.');
367 return pos > 0 ? filename.substring(pos + 1) : null;
368 }
369
370 private void copyImageToPrivateStorage(File file, Uri image, int sampleSize) throws FileCopyException {
371 file.getParentFile().mkdirs();
372 InputStream is = null;
373 OutputStream os = null;
374 try {
375 if (!file.exists() && !file.createNewFile()) {
376 throw new FileCopyException(R.string.error_unable_to_create_temporary_file);
377 }
378 is = mXmppConnectionService.getContentResolver().openInputStream(image);
379 if (is == null) {
380 throw new FileCopyException(R.string.error_not_an_image_file);
381 }
382 Bitmap originalBitmap;
383 BitmapFactory.Options options = new BitmapFactory.Options();
384 int inSampleSize = (int) Math.pow(2, sampleSize);
385 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
386 options.inSampleSize = inSampleSize;
387 originalBitmap = BitmapFactory.decodeStream(is, null, options);
388 is.close();
389 if (originalBitmap == null) {
390 throw new FileCopyException(R.string.error_not_an_image_file);
391 }
392 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
393 int rotation = getRotation(image);
394 scaledBitmap = rotate(scaledBitmap, rotation);
395 boolean targetSizeReached = false;
396 int quality = Config.IMAGE_QUALITY;
397 final int imageMaxSize = mXmppConnectionService.getResources().getInteger(R.integer.auto_accept_filesize);
398 while (!targetSizeReached) {
399 os = new FileOutputStream(file);
400 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, quality, os);
401 if (!success) {
402 throw new FileCopyException(R.string.error_compressing_image);
403 }
404 os.flush();
405 targetSizeReached = file.length() <= imageMaxSize || quality <= 50;
406 quality -= 5;
407 }
408 scaledBitmap.recycle();
409 } catch (FileNotFoundException e) {
410 throw new FileCopyException(R.string.error_file_not_found);
411 } catch (IOException e) {
412 e.printStackTrace();
413 throw new FileCopyException(R.string.error_io_exception);
414 } catch (SecurityException e) {
415 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
416 } catch (OutOfMemoryError e) {
417 ++sampleSize;
418 if (sampleSize <= 3) {
419 copyImageToPrivateStorage(file, image, sampleSize);
420 } else {
421 throw new FileCopyException(R.string.error_out_of_memory);
422 }
423 } finally {
424 close(os);
425 close(is);
426 }
427 }
428
429 public void copyImageToPrivateStorage(File file, Uri image) throws FileCopyException {
430 Log.d(Config.LOGTAG, "copy image (" + image.toString() + ") to private storage " + file.getAbsolutePath());
431 copyImageToPrivateStorage(file, image, 0);
432 }
433
434 public void copyImageToPrivateStorage(Message message, Uri image) throws FileCopyException {
435 switch (Config.IMAGE_FORMAT) {
436 case JPEG:
437 message.setRelativeFilePath(message.getUuid() + ".jpg");
438 break;
439 case PNG:
440 message.setRelativeFilePath(message.getUuid() + ".png");
441 break;
442 case WEBP:
443 message.setRelativeFilePath(message.getUuid() + ".webp");
444 break;
445 }
446 copyImageToPrivateStorage(getFile(message), image);
447 updateFileParams(message);
448 }
449
450 private int getRotation(File file) {
451 return getRotation(Uri.parse("file://" + file.getAbsolutePath()));
452 }
453
454 private int getRotation(Uri image) {
455 InputStream is = null;
456 try {
457 is = mXmppConnectionService.getContentResolver().openInputStream(image);
458 return ExifHelper.getOrientation(is);
459 } catch (FileNotFoundException e) {
460 return 0;
461 } finally {
462 close(is);
463 }
464 }
465
466 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly) throws FileNotFoundException {
467 final String uuid = message.getUuid();
468 final LruCache<String, Bitmap> cache = mXmppConnectionService.getBitmapCache();
469 Bitmap thumbnail = cache.get(uuid);
470 if ((thumbnail == null) && (!cacheOnly)) {
471 synchronized (THUMBNAIL_LOCK) {
472 thumbnail = cache.get(uuid);
473 if (thumbnail != null) {
474 return thumbnail;
475 }
476 DownloadableFile file = getFile(message);
477 final String mime = file.getMimeType();
478 if (mime.startsWith("video/")) {
479 thumbnail = getVideoPreview(file, size);
480 } else {
481 Bitmap fullsize = getFullsizeImagePreview(file, size);
482 if (fullsize == null) {
483 throw new FileNotFoundException();
484 }
485 thumbnail = resize(fullsize, size);
486 thumbnail = rotate(thumbnail, getRotation(file));
487 if (mime.equals("image/gif")) {
488 Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
489 drawOverlay(withGifOverlay, R.drawable.play_gif, 1.0f);
490 thumbnail.recycle();
491 thumbnail = withGifOverlay;
492 }
493 }
494 this.mXmppConnectionService.getBitmapCache().put(uuid, thumbnail);
495 }
496 }
497 return thumbnail;
498 }
499
500 private Bitmap getFullsizeImagePreview(File file, int size) {
501 BitmapFactory.Options options = new BitmapFactory.Options();
502 options.inSampleSize = calcSampleSize(file, size);
503 try {
504 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
505 } catch (OutOfMemoryError e) {
506 options.inSampleSize *= 2;
507 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
508 }
509 }
510
511 private void drawOverlay(Bitmap bitmap, int resource, float factor) {
512 Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
513 Canvas canvas = new Canvas(bitmap);
514 float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
515 Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
516 float left = (canvas.getWidth() - targetSize) / 2.0f;
517 float top = (canvas.getHeight() - targetSize) / 2.0f;
518 RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
519 canvas.drawBitmap(overlay, null, dst, createAntiAliasingPaint());
520 }
521
522 private static Paint createAntiAliasingPaint() {
523 Paint paint = new Paint();
524 paint.setAntiAlias(true);
525 paint.setFilterBitmap(true);
526 paint.setDither(true);
527 return paint;
528 }
529
530 private Bitmap getVideoPreview(File file, int size) {
531 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
532 Bitmap frame;
533 try {
534 metadataRetriever.setDataSource(file.getAbsolutePath());
535 frame = metadataRetriever.getFrameAtTime(0);
536 metadataRetriever.release();
537 frame = resize(frame, size);
538 } catch (RuntimeException e) {
539 frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
540 frame.eraseColor(0xff000000);
541 }
542 drawOverlay(frame, R.drawable.play_video, 0.75f);
543 return frame;
544 }
545
546 private static String getTakePhotoPath() {
547 return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM) + "/Camera/";
548 }
549
550 public Uri getTakePhotoUri() {
551 File file;
552 if (Config.ONLY_INTERNAL_STORAGE) {
553 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath(), "Camera/IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
554 } else {
555 file = new File(getTakePhotoPath() + "IMG_" + this.IMAGE_DATE_FORMAT.format(new Date()) + ".jpg");
556 }
557 file.getParentFile().mkdirs();
558 return getUriForFile(mXmppConnectionService, file);
559 }
560
561 public static Uri getUriForFile(Context context, File file) {
562 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N || Config.ONLY_INTERNAL_STORAGE) {
563 try {
564 return FileProvider.getUriForFile(context, getAuthority(context), file);
565 } catch (IllegalArgumentException e) {
566 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
567 throw new SecurityException(e);
568 } else {
569 return Uri.fromFile(file);
570 }
571 }
572 } else {
573 return Uri.fromFile(file);
574 }
575 }
576
577 public static String getAuthority(Context context) {
578 return context.getPackageName() + FILE_PROVIDER;
579 }
580
581 public static Uri getIndexableTakePhotoUri(Uri original) {
582 if (Config.ONLY_INTERNAL_STORAGE || "file".equals(original.getScheme())) {
583 return original;
584 } else {
585 List<String> segments = original.getPathSegments();
586 return Uri.parse("file://" + getTakePhotoPath() + segments.get(segments.size() - 1));
587 }
588 }
589
590 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
591 Bitmap bm = cropCenterSquare(image, size);
592 if (bm == null) {
593 return null;
594 }
595 if (hasAlpha(bm)) {
596 Log.d(Config.LOGTAG, "alpha in avatar detected; uploading as PNG");
597 bm.recycle();
598 bm = cropCenterSquare(image, 96);
599 return getPepAvatar(bm, Bitmap.CompressFormat.PNG, 100);
600 }
601 return getPepAvatar(bm, format, 100);
602 }
603
604 private static boolean hasAlpha(final Bitmap bitmap) {
605 for (int x = 0; x < bitmap.getWidth(); ++x) {
606 for (int y = 0; y < bitmap.getWidth(); ++y) {
607 if (Color.alpha(bitmap.getPixel(x, y)) < 255) {
608 return true;
609 }
610 }
611 }
612 return false;
613 }
614
615 private Avatar getPepAvatar(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
616 try {
617 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
618 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
619 MessageDigest digest = MessageDigest.getInstance("SHA-1");
620 DigestOutputStream mDigestOutputStream = new DigestOutputStream(mBase64OutputStream, digest);
621 if (!bitmap.compress(format, quality, mDigestOutputStream)) {
622 return null;
623 }
624 mDigestOutputStream.flush();
625 mDigestOutputStream.close();
626 long chars = mByteArrayOutputStream.size();
627 if (format != Bitmap.CompressFormat.PNG && quality >= 50 && chars >= Config.AVATAR_CHAR_LIMIT) {
628 int q = quality - 2;
629 Log.d(Config.LOGTAG, "avatar char length was " + chars + " reducing quality to " + q);
630 return getPepAvatar(bitmap, format, q);
631 }
632 Log.d(Config.LOGTAG, "settled on char length " + chars + " with quality=" + quality);
633 final Avatar avatar = new Avatar();
634 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
635 avatar.image = new String(mByteArrayOutputStream.toByteArray());
636 if (format.equals(Bitmap.CompressFormat.WEBP)) {
637 avatar.type = "image/webp";
638 } else if (format.equals(Bitmap.CompressFormat.JPEG)) {
639 avatar.type = "image/jpeg";
640 } else if (format.equals(Bitmap.CompressFormat.PNG)) {
641 avatar.type = "image/png";
642 }
643 avatar.width = bitmap.getWidth();
644 avatar.height = bitmap.getHeight();
645 return avatar;
646 } catch (Exception e) {
647 return null;
648 }
649 }
650
651 public Avatar getStoredPepAvatar(String hash) {
652 if (hash == null) {
653 return null;
654 }
655 Avatar avatar = new Avatar();
656 File file = new File(getAvatarPath(hash));
657 FileInputStream is = null;
658 try {
659 avatar.size = file.length();
660 BitmapFactory.Options options = new BitmapFactory.Options();
661 options.inJustDecodeBounds = true;
662 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
663 is = new FileInputStream(file);
664 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
665 Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
666 MessageDigest digest = MessageDigest.getInstance("SHA-1");
667 DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
668 byte[] buffer = new byte[4096];
669 int length;
670 while ((length = is.read(buffer)) > 0) {
671 os.write(buffer, 0, length);
672 }
673 os.flush();
674 os.close();
675 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
676 avatar.image = new String(mByteArrayOutputStream.toByteArray());
677 avatar.height = options.outHeight;
678 avatar.width = options.outWidth;
679 avatar.type = options.outMimeType;
680 return avatar;
681 } catch (NoSuchAlgorithmException | IOException e) {
682 return null;
683 } finally {
684 close(is);
685 }
686 }
687
688 public boolean isAvatarCached(Avatar avatar) {
689 File file = new File(getAvatarPath(avatar.getFilename()));
690 return file.exists();
691 }
692
693 public boolean save(final Avatar avatar) {
694 File file;
695 if (isAvatarCached(avatar)) {
696 file = new File(getAvatarPath(avatar.getFilename()));
697 avatar.size = file.length();
698 } else {
699 file = new File(mXmppConnectionService.getCacheDir().getAbsolutePath() + "/" + UUID.randomUUID().toString());
700 if (file.getParentFile().mkdirs()) {
701 Log.d(Config.LOGTAG,"created cache directory");
702 }
703 OutputStream os = null;
704 try {
705 if (!file.createNewFile()) {
706 Log.d(Config.LOGTAG,"unable to create temporary file "+file.getAbsolutePath());
707 }
708 os = new FileOutputStream(file);
709 MessageDigest digest = MessageDigest.getInstance("SHA-1");
710 digest.reset();
711 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
712 final byte[] bytes = avatar.getImageAsBytes();
713 mDigestOutputStream.write(bytes);
714 mDigestOutputStream.flush();
715 mDigestOutputStream.close();
716 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
717 if (sha1sum.equals(avatar.sha1sum)) {
718 File outputFile = new File(getAvatarPath(avatar.getFilename()));
719 if (outputFile.getParentFile().mkdirs()) {
720 Log.d(Config.LOGTAG,"created avatar directory");
721 }
722 String filename = getAvatarPath(avatar.getFilename());
723 if (!file.renameTo(new File(filename))) {
724 Log.d(Config.LOGTAG,"unable to rename "+file.getAbsolutePath()+" to "+outputFile);
725 return false;
726 }
727 } else {
728 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
729 if (!file.delete()) {
730 Log.d(Config.LOGTAG,"unable to delete temporary file");
731 }
732 return false;
733 }
734 avatar.size = bytes.length;
735 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
736 return false;
737 } finally {
738 close(os);
739 }
740 }
741 return true;
742 }
743
744 private String getAvatarPath(String avatar) {
745 return mXmppConnectionService.getFilesDir().getAbsolutePath() + "/avatars/" + avatar;
746 }
747
748 public Uri getAvatarUri(String avatar) {
749 return Uri.parse("file:" + getAvatarPath(avatar));
750 }
751
752 public Bitmap cropCenterSquare(Uri image, int size) {
753 if (image == null) {
754 return null;
755 }
756 InputStream is = null;
757 try {
758 BitmapFactory.Options options = new BitmapFactory.Options();
759 options.inSampleSize = calcSampleSize(image, size);
760 is = mXmppConnectionService.getContentResolver().openInputStream(image);
761 if (is == null) {
762 return null;
763 }
764 Bitmap input = BitmapFactory.decodeStream(is, null, options);
765 if (input == null) {
766 return null;
767 } else {
768 input = rotate(input, getRotation(image));
769 return cropCenterSquare(input, size);
770 }
771 } catch (FileNotFoundException | SecurityException e) {
772 return null;
773 } finally {
774 close(is);
775 }
776 }
777
778 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
779 if (image == null) {
780 return null;
781 }
782 InputStream is = null;
783 try {
784 BitmapFactory.Options options = new BitmapFactory.Options();
785 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
786 is = mXmppConnectionService.getContentResolver().openInputStream(image);
787 if (is == null) {
788 return null;
789 }
790 Bitmap source = BitmapFactory.decodeStream(is, null, options);
791 if (source == null) {
792 return null;
793 }
794 int sourceWidth = source.getWidth();
795 int sourceHeight = source.getHeight();
796 float xScale = (float) newWidth / sourceWidth;
797 float yScale = (float) newHeight / sourceHeight;
798 float scale = Math.max(xScale, yScale);
799 float scaledWidth = scale * sourceWidth;
800 float scaledHeight = scale * sourceHeight;
801 float left = (newWidth - scaledWidth) / 2;
802 float top = (newHeight - scaledHeight) / 2;
803
804 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
805 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
806 Canvas canvas = new Canvas(dest);
807 canvas.drawBitmap(source, null, targetRect, createAntiAliasingPaint());
808 if (source.isRecycled()) {
809 source.recycle();
810 }
811 return dest;
812 } catch (SecurityException e) {
813 return null; //android 6.0 with revoked permissions for example
814 } catch (FileNotFoundException e) {
815 return null;
816 } finally {
817 close(is);
818 }
819 }
820
821 public Bitmap cropCenterSquare(Bitmap input, int size) {
822 int w = input.getWidth();
823 int h = input.getHeight();
824
825 float scale = Math.max((float) size / h, (float) size / w);
826
827 float outWidth = scale * w;
828 float outHeight = scale * h;
829 float left = (size - outWidth) / 2;
830 float top = (size - outHeight) / 2;
831 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
832
833 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
834 Canvas canvas = new Canvas(output);
835 canvas.drawBitmap(input, null, target, createAntiAliasingPaint());
836 if (!input.isRecycled()) {
837 input.recycle();
838 }
839 return output;
840 }
841
842 private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
843 BitmapFactory.Options options = new BitmapFactory.Options();
844 options.inJustDecodeBounds = true;
845 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
846 return calcSampleSize(options, size);
847 }
848
849 private static int calcSampleSize(File image, int size) {
850 BitmapFactory.Options options = new BitmapFactory.Options();
851 options.inJustDecodeBounds = true;
852 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
853 return calcSampleSize(options, size);
854 }
855
856 public static int calcSampleSize(BitmapFactory.Options options, int size) {
857 int height = options.outHeight;
858 int width = options.outWidth;
859 int inSampleSize = 1;
860
861 if (height > size || width > size) {
862 int halfHeight = height / 2;
863 int halfWidth = width / 2;
864
865 while ((halfHeight / inSampleSize) > size
866 && (halfWidth / inSampleSize) > size) {
867 inSampleSize *= 2;
868 }
869 }
870 return inSampleSize;
871 }
872
873 public void updateFileParams(Message message) {
874 updateFileParams(message, null);
875 }
876
877 public void updateFileParams(Message message, URL url) {
878 DownloadableFile file = getFile(message);
879 final String mime = file.getMimeType();
880 boolean image = message.getType() == Message.TYPE_IMAGE || (mime != null && mime.startsWith("image/"));
881 boolean video = mime != null && mime.startsWith("video/");
882 boolean audio = mime != null && mime.startsWith("audio/");
883 final StringBuilder body = new StringBuilder();
884 if (url != null) {
885 body.append(url.toString());
886 }
887 body.append('|').append(file.getSize());
888 if (image || video) {
889 try {
890 Dimensions dimensions = image ? getImageDimensions(file) : getVideoDimensions(file);
891 if (dimensions.valid()) {
892 body.append('|').append(dimensions.width).append('|').append(dimensions.height);
893 }
894 } catch (NotAVideoFile notAVideoFile) {
895 Log.d(Config.LOGTAG, "file with mime type " + file.getMimeType() + " was not a video file");
896 //fall threw
897 }
898 } else if (audio) {
899 body.append("|0|0|").append(getMediaRuntime(file));
900 }
901 message.setBody(body.toString());
902 }
903
904 public int getMediaRuntime(Uri uri) {
905 try {
906 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
907 mediaMetadataRetriever.setDataSource(mXmppConnectionService, uri);
908 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
909 } catch (RuntimeException e) {
910 return 0;
911 }
912 }
913
914 private int getMediaRuntime(File file) {
915 try {
916 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
917 mediaMetadataRetriever.setDataSource(file.toString());
918 return Integer.parseInt(mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION));
919 } catch (RuntimeException e) {
920 return 0;
921 }
922 }
923
924 private Dimensions getImageDimensions(File file) {
925 BitmapFactory.Options options = new BitmapFactory.Options();
926 options.inJustDecodeBounds = true;
927 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
928 int rotation = getRotation(file);
929 boolean rotated = rotation == 90 || rotation == 270;
930 int imageHeight = rotated ? options.outWidth : options.outHeight;
931 int imageWidth = rotated ? options.outHeight : options.outWidth;
932 return new Dimensions(imageHeight, imageWidth);
933 }
934
935 private Dimensions getVideoDimensions(File file) throws NotAVideoFile {
936 MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
937 try {
938 metadataRetriever.setDataSource(file.getAbsolutePath());
939 } catch (RuntimeException e) {
940 throw new NotAVideoFile(e);
941 }
942 return getVideoDimensions(metadataRetriever);
943 }
944
945 private static Dimensions getVideoDimensions(Context context, Uri uri) throws NotAVideoFile {
946 MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
947 try {
948 mediaMetadataRetriever.setDataSource(context, uri);
949 } catch (RuntimeException e) {
950 throw new NotAVideoFile(e);
951 }
952 return getVideoDimensions(mediaMetadataRetriever);
953 }
954
955 private static Dimensions getVideoDimensionsOfFrame(MediaMetadataRetriever mediaMetadataRetriever) {
956 Bitmap bitmap = null;
957 try {
958 bitmap = mediaMetadataRetriever.getFrameAtTime();
959 return new Dimensions(bitmap.getHeight(), bitmap.getWidth());
960 } catch (Exception e) {
961 return null;
962 } finally {
963 if (bitmap != null) {
964 bitmap.recycle();;
965 }
966 }
967 }
968
969 private static Dimensions getVideoDimensions(MediaMetadataRetriever metadataRetriever) throws NotAVideoFile {
970 String hasVideo = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_HAS_VIDEO);
971 if (hasVideo == null) {
972 throw new NotAVideoFile();
973 }
974 Dimensions dimensions = getVideoDimensionsOfFrame(metadataRetriever);
975 if (dimensions != null) {
976 return dimensions;
977 }
978 int rotation = extractRotationFromMediaRetriever(metadataRetriever);
979 boolean rotated = rotation == 90 || rotation == 270;
980 int height;
981 try {
982 String h = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT);
983 height = Integer.parseInt(h);
984 } catch (Exception e) {
985 height = -1;
986 }
987 int width;
988 try {
989 String w = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH);
990 width = Integer.parseInt(w);
991 } catch (Exception e) {
992 width = -1;
993 }
994 metadataRetriever.release();
995 Log.d(Config.LOGTAG, "extracted video dims " + width + "x" + height);
996 return rotated ? new Dimensions(width, height) : new Dimensions(height, width);
997 }
998
999 private static int extractRotationFromMediaRetriever(MediaMetadataRetriever metadataRetriever) {
1000 String r = metadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
1001 try {
1002 return Integer.parseInt(r);
1003 } catch (Exception e) {
1004 return 0;
1005 }
1006 }
1007
1008 private static class Dimensions {
1009 public final int width;
1010 public final int height;
1011
1012 Dimensions(int height, int width) {
1013 this.width = width;
1014 this.height = height;
1015 }
1016
1017 public int getMin() {
1018 return Math.min(width, height);
1019 }
1020
1021 public boolean valid() {
1022 return width > 0 && height > 0;
1023 }
1024 }
1025
1026 private static class NotAVideoFile extends Exception {
1027 public NotAVideoFile(Throwable t) {
1028 super(t);
1029 }
1030
1031 public NotAVideoFile() {
1032 super();
1033 }
1034 }
1035
1036 public class FileCopyException extends Exception {
1037 private static final long serialVersionUID = -1010013599132881427L;
1038 private int resId;
1039
1040 public FileCopyException(int resId) {
1041 this.resId = resId;
1042 }
1043
1044 public int getResId() {
1045 return resId;
1046 }
1047 }
1048
1049 public Bitmap getAvatar(String avatar, int size) {
1050 if (avatar == null) {
1051 return null;
1052 }
1053 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
1054 if (bm == null) {
1055 return null;
1056 }
1057 return bm;
1058 }
1059
1060 public boolean isFileAvailable(Message message) {
1061 return getFile(message).exists();
1062 }
1063
1064 public static void close(Closeable stream) {
1065 if (stream != null) {
1066 try {
1067 stream.close();
1068 } catch (IOException e) {
1069 }
1070 }
1071 }
1072
1073 public static void close(Socket socket) {
1074 if (socket != null) {
1075 try {
1076 socket.close();
1077 } catch (IOException e) {
1078 }
1079 }
1080 }
1081
1082
1083 public static boolean weOwnFile(Context context, Uri uri) {
1084 if (uri == null || !ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
1085 return false;
1086 } else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
1087 return fileIsInFilesDir(context, uri);
1088 } else {
1089 return weOwnFileLollipop(uri);
1090 }
1091 }
1092
1093
1094 /**
1095 * This is more than hacky but probably way better than doing nothing
1096 * Further 'optimizations' might contain to get the parents of CacheDir and NoBackupDir
1097 * and check against those as well
1098 */
1099 private static boolean fileIsInFilesDir(Context context, Uri uri) {
1100 try {
1101 final String haystack = context.getFilesDir().getParentFile().getCanonicalPath();
1102 final String needle = new File(uri.getPath()).getCanonicalPath();
1103 return needle.startsWith(haystack);
1104 } catch (IOException e) {
1105 return false;
1106 }
1107 }
1108
1109 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
1110 private static boolean weOwnFileLollipop(Uri uri) {
1111 try {
1112 File file = new File(uri.getPath());
1113 FileDescriptor fd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY).getFileDescriptor();
1114 StructStat st = Os.fstat(fd);
1115 return st.st_uid == android.os.Process.myUid();
1116 } catch (FileNotFoundException e) {
1117 return false;
1118 } catch (Exception e) {
1119 return true;
1120 }
1121 }
1122}