1package eu.siacs.conversations.persistance;
2
3import android.graphics.Bitmap;
4import android.graphics.BitmapFactory;
5import android.graphics.Canvas;
6import android.graphics.Matrix;
7import android.graphics.RectF;
8import android.net.Uri;
9import android.os.Environment;
10import android.util.Base64;
11import android.util.Base64OutputStream;
12import android.util.Log;
13import android.webkit.MimeTypeMap;
14
15import java.io.ByteArrayOutputStream;
16import java.io.Closeable;
17import java.io.File;
18import java.io.FileNotFoundException;
19import java.io.FileOutputStream;
20import java.io.IOException;
21import java.io.InputStream;
22import java.io.OutputStream;
23import java.net.Socket;
24import java.net.URL;
25import java.security.DigestOutputStream;
26import java.security.MessageDigest;
27import java.security.NoSuchAlgorithmException;
28import java.text.SimpleDateFormat;
29import java.util.Arrays;
30import java.util.Date;
31import java.util.Locale;
32
33import eu.siacs.conversations.Config;
34import eu.siacs.conversations.R;
35import eu.siacs.conversations.entities.DownloadableFile;
36import eu.siacs.conversations.entities.Message;
37import eu.siacs.conversations.entities.Transferable;
38import eu.siacs.conversations.services.XmppConnectionService;
39import eu.siacs.conversations.utils.CryptoHelper;
40import eu.siacs.conversations.utils.ExifHelper;
41import eu.siacs.conversations.utils.FileUtils;
42import eu.siacs.conversations.xmpp.pep.Avatar;
43
44public class FileBackend {
45 private final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
46
47 private XmppConnectionService mXmppConnectionService;
48
49 public FileBackend(XmppConnectionService service) {
50 this.mXmppConnectionService = service;
51 }
52
53 public DownloadableFile getFile(Message message) {
54 return getFile(message, true);
55 }
56
57 public DownloadableFile getFile(Message message, boolean decrypted) {
58 final boolean encrypted = !decrypted
59 && (message.getEncryption() == Message.ENCRYPTION_PGP
60 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
61 final DownloadableFile file;
62 String path = message.getRelativeFilePath();
63 if (path == null) {
64 path = message.getUuid();
65 }
66 if (path.startsWith("/")) {
67 file = new DownloadableFile(path);
68 } else {
69 String mime = message.getMimeType();
70 if (mime != null && mime.startsWith("image")) {
71 file = new DownloadableFile(getConversationsImageDirectory() + path);
72 } else {
73 file = new DownloadableFile(getConversationsFileDirectory() + path);
74 }
75 }
76 if (encrypted) {
77 return new DownloadableFile(getConversationsFileDirectory() + file.getName() + ".pgp");
78 } else {
79 return file;
80 }
81 }
82
83 public static String getConversationsFileDirectory() {
84 return Environment.getExternalStorageDirectory().getAbsolutePath()+"/Conversations/";
85 }
86
87 public static String getConversationsImageDirectory() {
88 return Environment.getExternalStoragePublicDirectory(
89 Environment.DIRECTORY_PICTURES).getAbsolutePath()
90 + "/Conversations/";
91 }
92
93 public Bitmap resize(Bitmap originalBitmap, int size) {
94 int w = originalBitmap.getWidth();
95 int h = originalBitmap.getHeight();
96 if (Math.max(w, h) > size) {
97 int scalledW;
98 int scalledH;
99 if (w <= h) {
100 scalledW = (int) (w / ((double) h / size));
101 scalledH = size;
102 } else {
103 scalledW = size;
104 scalledH = (int) (h / ((double) w / size));
105 }
106 Bitmap result = Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
107 if (originalBitmap != null && !originalBitmap.isRecycled()) {
108 originalBitmap.recycle();
109 }
110 return result;
111 } else {
112 return originalBitmap;
113 }
114 }
115
116 public static Bitmap rotate(Bitmap bitmap, int degree) {
117 if (degree == 0) {
118 return bitmap;
119 }
120 int w = bitmap.getWidth();
121 int h = bitmap.getHeight();
122 Matrix mtx = new Matrix();
123 mtx.postRotate(degree);
124 Bitmap result = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
125 if (bitmap != null && !bitmap.isRecycled()) {
126 bitmap.recycle();
127 }
128 return result;
129 }
130
131 public boolean useImageAsIs(Uri uri) {
132 String path = getOriginalPath(uri);
133 if (path == null) {
134 return false;
135 }
136 File file = new File(path);
137 long size = file.length();
138 if (size == 0 || size >= 524288 ) {
139 return false;
140 }
141 BitmapFactory.Options options = new BitmapFactory.Options();
142 options.inJustDecodeBounds = true;
143 try {
144 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(uri), null, options);
145 if (options == null || options.outMimeType == null || options.outHeight <= 0 || options.outWidth <= 0) {
146 return false;
147 }
148 return (options.outWidth <= Config.IMAGE_SIZE && options.outHeight <= Config.IMAGE_SIZE && options.outMimeType.contains(Config.IMAGE_FORMAT.name().toLowerCase()));
149 } catch (FileNotFoundException e) {
150 return false;
151 }
152 }
153
154 public String getOriginalPath(Uri uri) {
155 return FileUtils.getPath(mXmppConnectionService,uri);
156 }
157
158 public DownloadableFile copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
159 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage");
160 String mime = mXmppConnectionService.getContentResolver().getType(uri);
161 String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
162 message.setRelativeFilePath(message.getUuid() + "." + extension);
163 DownloadableFile file = mXmppConnectionService.getFileBackend().getFile(message);
164 file.getParentFile().mkdirs();
165 OutputStream os = null;
166 InputStream is = null;
167 try {
168 file.createNewFile();
169 os = new FileOutputStream(file);
170 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
171 byte[] buffer = new byte[1024];
172 int length;
173 while ((length = is.read(buffer)) > 0) {
174 os.write(buffer, 0, length);
175 }
176 os.flush();
177 } catch(FileNotFoundException e) {
178 throw new FileCopyException(R.string.error_file_not_found);
179 } catch (IOException e) {
180 e.printStackTrace();
181 throw new FileCopyException(R.string.error_io_exception);
182 } finally {
183 close(os);
184 close(is);
185 }
186 Log.d(Config.LOGTAG, "output file name " + mXmppConnectionService.getFileBackend().getFile(message));
187 return file;
188 }
189
190 public DownloadableFile copyImageToPrivateStorage(Message message, Uri image)
191 throws FileCopyException {
192 return this.copyImageToPrivateStorage(message, image, 0);
193 }
194
195 private DownloadableFile copyImageToPrivateStorage(Message message,Uri image, int sampleSize) throws FileCopyException {
196 switch(Config.IMAGE_FORMAT) {
197 case JPEG:
198 message.setRelativeFilePath(message.getUuid()+".jpg");
199 break;
200 case PNG:
201 message.setRelativeFilePath(message.getUuid()+".png");
202 break;
203 case WEBP:
204 message.setRelativeFilePath(message.getUuid()+".webp");
205 break;
206 }
207 DownloadableFile file = getFile(message);
208 file.getParentFile().mkdirs();
209 InputStream is = null;
210 OutputStream os = null;
211 try {
212 file.createNewFile();
213 is = mXmppConnectionService.getContentResolver().openInputStream(image);
214 os = new FileOutputStream(file);
215
216 Bitmap originalBitmap;
217 BitmapFactory.Options options = new BitmapFactory.Options();
218 int inSampleSize = (int) Math.pow(2, sampleSize);
219 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
220 options.inSampleSize = inSampleSize;
221 originalBitmap = BitmapFactory.decodeStream(is, null, options);
222 is.close();
223 if (originalBitmap == null) {
224 throw new FileCopyException(R.string.error_not_an_image_file);
225 }
226 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
227 int rotation = getRotation(image);
228 scaledBitmap = rotate(scaledBitmap, rotation);
229 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, Config.IMAGE_QUALITY, os);
230 if (!success) {
231 throw new FileCopyException(R.string.error_compressing_image);
232 }
233 os.flush();
234 long size = file.getSize();
235 int width = scaledBitmap.getWidth();
236 int height = scaledBitmap.getHeight();
237 message.setBody(Long.toString(size) + '|' + width + '|' + height);
238 return file;
239 } catch (FileNotFoundException e) {
240 throw new FileCopyException(R.string.error_file_not_found);
241 } catch (IOException e) {
242 e.printStackTrace();
243 throw new FileCopyException(R.string.error_io_exception);
244 } catch (SecurityException e) {
245 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
246 } catch (OutOfMemoryError e) {
247 ++sampleSize;
248 if (sampleSize <= 3) {
249 return copyImageToPrivateStorage(message, image, sampleSize);
250 } else {
251 throw new FileCopyException(R.string.error_out_of_memory);
252 }
253 } catch (NullPointerException e) {
254 throw new FileCopyException(R.string.error_io_exception);
255 } finally {
256 close(os);
257 close(is);
258 }
259 }
260
261 private int getRotation(File file) {
262 return getRotation(Uri.parse("file://"+file.getAbsolutePath()));
263 }
264
265 private int getRotation(Uri image) {
266 InputStream is = null;
267 try {
268 is = mXmppConnectionService.getContentResolver().openInputStream(image);
269 return ExifHelper.getOrientation(is);
270 } catch (FileNotFoundException e) {
271 return 0;
272 } finally {
273 close(is);
274 }
275 }
276
277 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly)
278 throws FileNotFoundException {
279 Bitmap thumbnail = mXmppConnectionService.getBitmapCache().get(message.getUuid());
280 if ((thumbnail == null) && (!cacheOnly)) {
281 File file = getFile(message);
282 BitmapFactory.Options options = new BitmapFactory.Options();
283 options.inSampleSize = calcSampleSize(file, size);
284 Bitmap fullsize = BitmapFactory.decodeFile(file.getAbsolutePath(),options);
285 if (fullsize == null) {
286 throw new FileNotFoundException();
287 }
288 thumbnail = resize(fullsize, size);
289 thumbnail = rotate(thumbnail, getRotation(file));
290 this.mXmppConnectionService.getBitmapCache().put(message.getUuid(),thumbnail);
291 }
292 return thumbnail;
293 }
294
295 public Uri getTakePhotoUri() {
296 StringBuilder pathBuilder = new StringBuilder();
297 pathBuilder.append(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
298 pathBuilder.append('/');
299 pathBuilder.append("Camera");
300 pathBuilder.append('/');
301 pathBuilder.append("IMG_" + this.imageDateFormat.format(new Date()) + ".jpg");
302 Uri uri = Uri.parse("file://" + pathBuilder.toString());
303 File file = new File(uri.toString());
304 file.getParentFile().mkdirs();
305 return uri;
306 }
307
308 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
309 try {
310 Avatar avatar = new Avatar();
311 Bitmap bm = cropCenterSquare(image, size);
312 if (bm == null) {
313 return null;
314 }
315 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
316 Base64OutputStream mBase64OutputSttream = new Base64OutputStream(
317 mByteArrayOutputStream, Base64.DEFAULT);
318 MessageDigest digest = MessageDigest.getInstance("SHA-1");
319 DigestOutputStream mDigestOutputStream = new DigestOutputStream(
320 mBase64OutputSttream, digest);
321 if (!bm.compress(format, 75, mDigestOutputStream)) {
322 return null;
323 }
324 mDigestOutputStream.flush();
325 mDigestOutputStream.close();
326 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
327 avatar.image = new String(mByteArrayOutputStream.toByteArray());
328 return avatar;
329 } catch (NoSuchAlgorithmException e) {
330 return null;
331 } catch (IOException e) {
332 return null;
333 }
334 }
335
336 public boolean isAvatarCached(Avatar avatar) {
337 File file = new File(getAvatarPath(avatar.getFilename()));
338 return file.exists();
339 }
340
341 public boolean save(Avatar avatar) {
342 File file;
343 if (isAvatarCached(avatar)) {
344 file = new File(getAvatarPath(avatar.getFilename()));
345 } else {
346 String filename = getAvatarPath(avatar.getFilename());
347 file = new File(filename + ".tmp");
348 file.getParentFile().mkdirs();
349 OutputStream os = null;
350 try {
351 file.createNewFile();
352 os = new FileOutputStream(file);
353 MessageDigest digest = MessageDigest.getInstance("SHA-1");
354 digest.reset();
355 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
356 mDigestOutputStream.write(avatar.getImageAsBytes());
357 mDigestOutputStream.flush();
358 mDigestOutputStream.close();
359 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
360 if (sha1sum.equals(avatar.sha1sum)) {
361 file.renameTo(new File(filename));
362 } else {
363 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
364 file.delete();
365 return false;
366 }
367 } catch (IllegalArgumentException | IOException | NoSuchAlgorithmException e) {
368 return false;
369 } finally {
370 close(os);
371 }
372 }
373 avatar.size = file.length();
374 return true;
375 }
376
377 public String getAvatarPath(String avatar) {
378 return mXmppConnectionService.getFilesDir().getAbsolutePath()+ "/avatars/" + avatar;
379 }
380
381 public Uri getAvatarUri(String avatar) {
382 return Uri.parse("file:" + getAvatarPath(avatar));
383 }
384
385 public Bitmap cropCenterSquare(Uri image, int size) {
386 if (image == null) {
387 return null;
388 }
389 InputStream is = null;
390 try {
391 BitmapFactory.Options options = new BitmapFactory.Options();
392 options.inSampleSize = calcSampleSize(image, size);
393 is = mXmppConnectionService.getContentResolver().openInputStream(image);
394 if (is == null) {
395 return null;
396 }
397 Bitmap input = BitmapFactory.decodeStream(is, null, options);
398 if (input == null) {
399 return null;
400 } else {
401 input = rotate(input, getRotation(image));
402 return cropCenterSquare(input, size);
403 }
404 } catch (SecurityException e) {
405 return null; // happens for example on Android 6.0 if contacts permissions get revoked
406 } catch (FileNotFoundException e) {
407 return null;
408 } finally {
409 close(is);
410 }
411 }
412
413 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
414 if (image == null) {
415 return null;
416 }
417 InputStream is = null;
418 try {
419 BitmapFactory.Options options = new BitmapFactory.Options();
420 options.inSampleSize = calcSampleSize(image, Math.max(newHeight, newWidth));
421 is = mXmppConnectionService.getContentResolver().openInputStream(image);
422 if (is == null) {
423 return null;
424 }
425 Bitmap source = BitmapFactory.decodeStream(is, null, options);
426 if (source == null) {
427 return null;
428 }
429 int sourceWidth = source.getWidth();
430 int sourceHeight = source.getHeight();
431 float xScale = (float) newWidth / sourceWidth;
432 float yScale = (float) newHeight / sourceHeight;
433 float scale = Math.max(xScale, yScale);
434 float scaledWidth = scale * sourceWidth;
435 float scaledHeight = scale * sourceHeight;
436 float left = (newWidth - scaledWidth) / 2;
437 float top = (newHeight - scaledHeight) / 2;
438
439 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
440 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
441 Canvas canvas = new Canvas(dest);
442 canvas.drawBitmap(source, null, targetRect, null);
443 if (source != null && !source.isRecycled()) {
444 source.recycle();
445 }
446 return dest;
447 } catch (SecurityException e) {
448 return null; //android 6.0 with revoked permissions for example
449 } catch (FileNotFoundException e) {
450 return null;
451 } finally {
452 close(is);
453 }
454 }
455
456 public Bitmap cropCenterSquare(Bitmap input, int size) {
457 int w = input.getWidth();
458 int h = input.getHeight();
459
460 float scale = Math.max((float) size / h, (float) size / w);
461
462 float outWidth = scale * w;
463 float outHeight = scale * h;
464 float left = (size - outWidth) / 2;
465 float top = (size - outHeight) / 2;
466 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
467
468 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
469 Canvas canvas = new Canvas(output);
470 canvas.drawBitmap(input, null, target, null);
471 if (input != null && !input.isRecycled()) {
472 input.recycle();
473 }
474 return output;
475 }
476
477 private int calcSampleSize(Uri image, int size) throws FileNotFoundException, SecurityException {
478 BitmapFactory.Options options = new BitmapFactory.Options();
479 options.inJustDecodeBounds = true;
480 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
481 return calcSampleSize(options, size);
482 }
483
484 private static int calcSampleSize(File image, int size) {
485 BitmapFactory.Options options = new BitmapFactory.Options();
486 options.inJustDecodeBounds = true;
487 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
488 return calcSampleSize(options, size);
489 }
490
491 public static int calcSampleSize(BitmapFactory.Options options, int size) {
492 int height = options.outHeight;
493 int width = options.outWidth;
494 int inSampleSize = 1;
495
496 if (height > size || width > size) {
497 int halfHeight = height / 2;
498 int halfWidth = width / 2;
499
500 while ((halfHeight / inSampleSize) > size
501 && (halfWidth / inSampleSize) > size) {
502 inSampleSize *= 2;
503 }
504 }
505 return inSampleSize;
506 }
507
508 public Uri getJingleFileUri(Message message) {
509 File file = getFile(message);
510 return Uri.parse("file://" + file.getAbsolutePath());
511 }
512
513 public void updateFileParams(Message message) {
514 updateFileParams(message,null);
515 }
516
517 public void updateFileParams(Message message, URL url) {
518 DownloadableFile file = getFile(message);
519 if (message.getType() == Message.TYPE_IMAGE || file.getMimeType().startsWith("image/")) {
520 BitmapFactory.Options options = new BitmapFactory.Options();
521 options.inJustDecodeBounds = true;
522 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
523 int rotation = getRotation(file);
524 boolean rotated = rotation == 90 || rotation == 270;
525 int imageHeight = rotated ? options.outWidth : options.outHeight;
526 int imageWidth = rotated ? options.outHeight : options.outWidth;
527 if (url == null) {
528 message.setBody(Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
529 } else {
530 message.setBody(url.toString()+"|"+Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
531 }
532 } else {
533 if (url != null) {
534 message.setBody(url.toString()+"|"+Long.toString(file.getSize()));
535 } else {
536 message.setBody(Long.toString(file.getSize()));
537 }
538 }
539
540 }
541
542 public class FileCopyException extends Exception {
543 private static final long serialVersionUID = -1010013599132881427L;
544 private int resId;
545
546 public FileCopyException(int resId) {
547 this.resId = resId;
548 }
549
550 public int getResId() {
551 return resId;
552 }
553 }
554
555 public Bitmap getAvatar(String avatar, int size) {
556 if (avatar == null) {
557 return null;
558 }
559 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
560 if (bm == null) {
561 return null;
562 }
563 return bm;
564 }
565
566 public boolean isFileAvailable(Message message) {
567 return getFile(message).exists();
568 }
569
570 public static void close(Closeable stream) {
571 if (stream != null) {
572 try {
573 stream.close();
574 } catch (IOException e) {
575 }
576 }
577 }
578
579 public static void close(Socket socket) {
580 if (socket != null) {
581 try {
582 socket.close();
583 } catch (IOException e) {
584 }
585 }
586 }
587}