1package eu.siacs.conversations.persistance;
2
3import android.database.Cursor;
4import android.graphics.Bitmap;
5import android.graphics.BitmapFactory;
6import android.graphics.Canvas;
7import android.graphics.Matrix;
8import android.graphics.RectF;
9import android.net.Uri;
10import android.os.Environment;
11import android.provider.MediaStore;
12import android.util.Base64;
13import android.util.Base64OutputStream;
14import android.util.Log;
15import android.webkit.MimeTypeMap;
16
17import java.io.ByteArrayOutputStream;
18import java.io.Closeable;
19import java.io.File;
20import java.io.FileNotFoundException;
21import java.io.FileOutputStream;
22import java.io.IOException;
23import java.io.InputStream;
24import java.io.OutputStream;
25import java.net.URL;
26import java.security.DigestOutputStream;
27import java.security.MessageDigest;
28import java.security.NoSuchAlgorithmException;
29import java.text.SimpleDateFormat;
30import java.util.Arrays;
31import java.util.Date;
32import java.util.Locale;
33
34import eu.siacs.conversations.Config;
35import eu.siacs.conversations.R;
36import eu.siacs.conversations.entities.DownloadableFile;
37import eu.siacs.conversations.entities.Message;
38import eu.siacs.conversations.entities.Transferable;
39import eu.siacs.conversations.services.XmppConnectionService;
40import eu.siacs.conversations.utils.CryptoHelper;
41import eu.siacs.conversations.utils.ExifHelper;
42import eu.siacs.conversations.xmpp.pep.Avatar;
43
44public class FileBackend {
45
46 private static int IMAGE_SIZE = 1920;
47
48 private final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
49
50 private XmppConnectionService mXmppConnectionService;
51
52 public FileBackend(XmppConnectionService service) {
53 this.mXmppConnectionService = service;
54 }
55
56 public DownloadableFile getFile(Message message) {
57 return getFile(message, true);
58 }
59
60 public DownloadableFile getFile(Message message, boolean decrypted) {
61 String path = message.getRelativeFilePath();
62 String extension;
63 if (path != null && !path.isEmpty()) {
64 String[] parts = path.split("\\.");
65 extension = "."+parts[parts.length - 1];
66 } else {
67 if (message.getType() == Message.TYPE_IMAGE || message.getType() == Message.TYPE_TEXT) {
68 extension = ".webp";
69 } else {
70 extension = "";
71 }
72 path = message.getUuid()+extension;
73 }
74 final boolean encrypted = !decrypted
75 && (message.getEncryption() == Message.ENCRYPTION_PGP
76 || message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
77 if (encrypted) {
78 return new DownloadableFile(getConversationsFileDirectory()+message.getUuid()+extension+".pgp");
79 } else {
80 if (path.startsWith("/")) {
81 return new DownloadableFile(path);
82 } else {
83 if (Arrays.asList(Transferable.VALID_IMAGE_EXTENSIONS).contains(extension)) {
84 return new DownloadableFile(getConversationsFileDirectory() + path);
85 } else {
86 return new DownloadableFile(getConversationsImageDirectory() + path);
87 }
88 }
89 }
90 }
91
92 public static String getConversationsFileDirectory() {
93 return Environment.getExternalStorageDirectory().getAbsolutePath()+"/Conversations/";
94 }
95
96 public static String getConversationsImageDirectory() {
97 return Environment.getExternalStoragePublicDirectory(
98 Environment.DIRECTORY_PICTURES).getAbsolutePath()
99 + "/Conversations/";
100 }
101
102 public Bitmap resize(Bitmap originalBitmap, int size) {
103 int w = originalBitmap.getWidth();
104 int h = originalBitmap.getHeight();
105 if (Math.max(w, h) > size) {
106 int scalledW;
107 int scalledH;
108 if (w <= h) {
109 scalledW = (int) (w / ((double) h / size));
110 scalledH = size;
111 } else {
112 scalledW = size;
113 scalledH = (int) (h / ((double) w / size));
114 }
115 return Bitmap.createScaledBitmap(originalBitmap, scalledW, scalledH, true);
116 } else {
117 return originalBitmap;
118 }
119 }
120
121 public Bitmap rotate(Bitmap bitmap, int degree) {
122 int w = bitmap.getWidth();
123 int h = bitmap.getHeight();
124 Matrix mtx = new Matrix();
125 mtx.postRotate(degree);
126 return Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, true);
127 }
128
129 public String getOriginalPath(Uri uri) {
130 String path = null;
131 if (uri.getScheme().equals("file")) {
132 return uri.getPath();
133 } else if (uri.toString().startsWith("content://media/")) {
134 String[] projection = {MediaStore.MediaColumns.DATA};
135 Cursor metaCursor = mXmppConnectionService.getContentResolver().query(uri,
136 projection, null, null, null);
137 if (metaCursor != null) {
138 try {
139 if (metaCursor.moveToFirst()) {
140 path = metaCursor.getString(0);
141 }
142 } finally {
143 metaCursor.close();
144 }
145 }
146 }
147 return path;
148 }
149
150 public DownloadableFile copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
151 Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage");
152 String mime = mXmppConnectionService.getContentResolver().getType(uri);
153 String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
154 message.setRelativeFilePath(message.getUuid() + "." + extension);
155 DownloadableFile file = mXmppConnectionService.getFileBackend().getFile(message);
156 file.getParentFile().mkdirs();
157 OutputStream os = null;
158 InputStream is = null;
159 try {
160 file.createNewFile();
161 os = new FileOutputStream(file);
162 is = mXmppConnectionService.getContentResolver().openInputStream(uri);
163 byte[] buffer = new byte[1024];
164 int length;
165 while ((length = is.read(buffer)) > 0) {
166 os.write(buffer, 0, length);
167 }
168 os.flush();
169 } catch(FileNotFoundException e) {
170 throw new FileCopyException(R.string.error_file_not_found);
171 } catch (IOException e) {
172 e.printStackTrace();
173 throw new FileCopyException(R.string.error_io_exception);
174 } finally {
175 close(os);
176 close(is);
177 }
178 Log.d(Config.LOGTAG, "output file name " + mXmppConnectionService.getFileBackend().getFile(message));
179 return file;
180 }
181
182 public DownloadableFile copyImageToPrivateStorage(Message message, Uri image)
183 throws FileCopyException {
184 return this.copyImageToPrivateStorage(message, image, 0);
185 }
186
187 private DownloadableFile copyImageToPrivateStorage(Message message,Uri image, int sampleSize) throws FileCopyException {
188 switch(Config.IMAGE_FORMAT) {
189 case JPEG:
190 message.setRelativeFilePath(message.getUuid()+".jpg");
191 break;
192 case PNG:
193 message.setRelativeFilePath(message.getUuid()+".png");
194 break;
195 case WEBP:
196 message.setRelativeFilePath(message.getUuid()+".webp");
197 break;
198 }
199 DownloadableFile file = getFile(message);
200 file.getParentFile().mkdirs();
201 InputStream is = null;
202 OutputStream os = null;
203 try {
204 file.createNewFile();
205 is = mXmppConnectionService.getContentResolver().openInputStream(image);
206 os = new FileOutputStream(file);
207
208 Bitmap originalBitmap;
209 BitmapFactory.Options options = new BitmapFactory.Options();
210 int inSampleSize = (int) Math.pow(2, sampleSize);
211 Log.d(Config.LOGTAG, "reading bitmap with sample size " + inSampleSize);
212 options.inSampleSize = inSampleSize;
213 originalBitmap = BitmapFactory.decodeStream(is, null, options);
214 is.close();
215 if (originalBitmap == null) {
216 throw new FileCopyException(R.string.error_not_an_image_file);
217 }
218 Bitmap scaledBitmap = resize(originalBitmap, Config.IMAGE_SIZE);
219 int rotation = getRotation(image);
220 if (rotation > 0) {
221 scaledBitmap = rotate(scaledBitmap, rotation);
222 }
223
224 boolean success = scaledBitmap.compress(Config.IMAGE_FORMAT, Config.IMAGE_QUALITY, os);
225 if (!success) {
226 throw new FileCopyException(R.string.error_compressing_image);
227 }
228 os.flush();
229 long size = file.getSize();
230 int width = scaledBitmap.getWidth();
231 int height = scaledBitmap.getHeight();
232 message.setBody(Long.toString(size) + '|' + width + '|' + height);
233 return file;
234 } catch (FileNotFoundException e) {
235 throw new FileCopyException(R.string.error_file_not_found);
236 } catch (IOException e) {
237 e.printStackTrace();
238 throw new FileCopyException(R.string.error_io_exception);
239 } catch (SecurityException e) {
240 throw new FileCopyException(R.string.error_security_exception_during_image_copy);
241 } catch (OutOfMemoryError e) {
242 ++sampleSize;
243 if (sampleSize <= 3) {
244 return copyImageToPrivateStorage(message, image, sampleSize);
245 } else {
246 throw new FileCopyException(R.string.error_out_of_memory);
247 }
248 } catch (NullPointerException e) {
249 throw new FileCopyException(R.string.error_io_exception);
250 } finally {
251 close(os);
252 close(is);
253 }
254 }
255
256 private int getRotation(Uri image) {
257 InputStream is = null;
258 try {
259 is = mXmppConnectionService.getContentResolver().openInputStream(image);
260 return ExifHelper.getOrientation(is);
261 } catch (FileNotFoundException e) {
262 return 0;
263 } finally {
264 close(is);
265 }
266 }
267
268 public Bitmap getThumbnail(Message message, int size, boolean cacheOnly)
269 throws FileNotFoundException {
270 Bitmap thumbnail = mXmppConnectionService.getBitmapCache().get(
271 message.getUuid());
272 if ((thumbnail == null) && (!cacheOnly)) {
273 File file = getFile(message);
274 BitmapFactory.Options options = new BitmapFactory.Options();
275 options.inSampleSize = calcSampleSize(file, size);
276 Bitmap fullsize = BitmapFactory.decodeFile(file.getAbsolutePath(),options);
277 if (fullsize == null) {
278 throw new FileNotFoundException();
279 }
280 thumbnail = resize(fullsize, size);
281 this.mXmppConnectionService.getBitmapCache().put(message.getUuid(),
282 thumbnail);
283 }
284 return thumbnail;
285 }
286
287 public Uri getTakePhotoUri() {
288 StringBuilder pathBuilder = new StringBuilder();
289 pathBuilder.append(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
290 pathBuilder.append('/');
291 pathBuilder.append("Camera");
292 pathBuilder.append('/');
293 pathBuilder.append("IMG_" + this.imageDateFormat.format(new Date()) + ".jpg");
294 Uri uri = Uri.parse("file://" + pathBuilder.toString());
295 File file = new File(uri.toString());
296 file.getParentFile().mkdirs();
297 return uri;
298 }
299
300 public Avatar getPepAvatar(Uri image, int size, Bitmap.CompressFormat format) {
301 try {
302 Avatar avatar = new Avatar();
303 Bitmap bm = cropCenterSquare(image, size);
304 if (bm == null) {
305 return null;
306 }
307 ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
308 Base64OutputStream mBase64OutputSttream = new Base64OutputStream(
309 mByteArrayOutputStream, Base64.DEFAULT);
310 MessageDigest digest = MessageDigest.getInstance("SHA-1");
311 DigestOutputStream mDigestOutputStream = new DigestOutputStream(
312 mBase64OutputSttream, digest);
313 if (!bm.compress(format, 75, mDigestOutputStream)) {
314 return null;
315 }
316 mDigestOutputStream.flush();
317 mDigestOutputStream.close();
318 avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
319 avatar.image = new String(mByteArrayOutputStream.toByteArray());
320 return avatar;
321 } catch (NoSuchAlgorithmException e) {
322 return null;
323 } catch (IOException e) {
324 return null;
325 }
326 }
327
328 public boolean isAvatarCached(Avatar avatar) {
329 File file = new File(getAvatarPath(avatar.getFilename()));
330 return file.exists();
331 }
332
333 public boolean save(Avatar avatar) {
334 File file;
335 if (isAvatarCached(avatar)) {
336 file = new File(getAvatarPath(avatar.getFilename()));
337 } else {
338 String filename = getAvatarPath(avatar.getFilename());
339 file = new File(filename + ".tmp");
340 file.getParentFile().mkdirs();
341 OutputStream os = null;
342 try {
343 file.createNewFile();
344 os = new FileOutputStream(file);
345 MessageDigest digest = MessageDigest.getInstance("SHA-1");
346 digest.reset();
347 DigestOutputStream mDigestOutputStream = new DigestOutputStream(os, digest);
348 mDigestOutputStream.write(avatar.getImageAsBytes());
349 mDigestOutputStream.flush();
350 mDigestOutputStream.close();
351 String sha1sum = CryptoHelper.bytesToHex(digest.digest());
352 if (sha1sum.equals(avatar.sha1sum)) {
353 file.renameTo(new File(filename));
354 } else {
355 Log.d(Config.LOGTAG, "sha1sum mismatch for " + avatar.owner);
356 file.delete();
357 return false;
358 }
359 } catch (FileNotFoundException e) {
360 return false;
361 } catch (IOException e) {
362 return false;
363 } catch (NoSuchAlgorithmException e) {
364 return false;
365 } finally {
366 close(os);
367 }
368 }
369 avatar.size = file.length();
370 return true;
371 }
372
373 public String getAvatarPath(String avatar) {
374 return mXmppConnectionService.getFilesDir().getAbsolutePath()+ "/avatars/" + avatar;
375 }
376
377 public Uri getAvatarUri(String avatar) {
378 return Uri.parse("file:" + getAvatarPath(avatar));
379 }
380
381 public Bitmap cropCenterSquare(Uri image, int size) {
382 if (image == null) {
383 return null;
384 }
385 InputStream is = null;
386 try {
387 BitmapFactory.Options options = new BitmapFactory.Options();
388 options.inSampleSize = calcSampleSize(image, size);
389 is = mXmppConnectionService.getContentResolver().openInputStream(image);
390 Bitmap input = BitmapFactory.decodeStream(is, null, options);
391 if (input == null) {
392 return null;
393 } else {
394 int rotation = getRotation(image);
395 if (rotation > 0) {
396 input = rotate(input, rotation);
397 }
398 return cropCenterSquare(input, size);
399 }
400 } catch (FileNotFoundException e) {
401 return null;
402 } finally {
403 close(is);
404 }
405 }
406
407 public Bitmap cropCenter(Uri image, int newHeight, int newWidth) {
408 if (image == null) {
409 return null;
410 }
411 InputStream is = null;
412 try {
413 BitmapFactory.Options options = new BitmapFactory.Options();
414 options.inSampleSize = calcSampleSize(image,Math.max(newHeight, newWidth));
415 is = mXmppConnectionService.getContentResolver().openInputStream(image);
416 Bitmap source = BitmapFactory.decodeStream(is, null, options);
417 if (source == null) {
418 return null;
419 }
420 int sourceWidth = source.getWidth();
421 int sourceHeight = source.getHeight();
422 float xScale = (float) newWidth / sourceWidth;
423 float yScale = (float) newHeight / sourceHeight;
424 float scale = Math.max(xScale, yScale);
425 float scaledWidth = scale * sourceWidth;
426 float scaledHeight = scale * sourceHeight;
427 float left = (newWidth - scaledWidth) / 2;
428 float top = (newHeight - scaledHeight) / 2;
429
430 RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);
431 Bitmap dest = Bitmap.createBitmap(newWidth, newHeight, Bitmap.Config.ARGB_8888);
432 Canvas canvas = new Canvas(dest);
433 canvas.drawBitmap(source, null, targetRect, null);
434 return dest;
435 } catch (FileNotFoundException e) {
436 return null;
437 } finally {
438 close(is);
439 }
440 }
441
442 public Bitmap cropCenterSquare(Bitmap input, int size) {
443 int w = input.getWidth();
444 int h = input.getHeight();
445
446 float scale = Math.max((float) size / h, (float) size / w);
447
448 float outWidth = scale * w;
449 float outHeight = scale * h;
450 float left = (size - outWidth) / 2;
451 float top = (size - outHeight) / 2;
452 RectF target = new RectF(left, top, left + outWidth, top + outHeight);
453
454 Bitmap output = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
455 Canvas canvas = new Canvas(output);
456 canvas.drawBitmap(input, null, target, null);
457 return output;
458 }
459
460 private int calcSampleSize(Uri image, int size) throws FileNotFoundException {
461 BitmapFactory.Options options = new BitmapFactory.Options();
462 options.inJustDecodeBounds = true;
463 BitmapFactory.decodeStream(mXmppConnectionService.getContentResolver().openInputStream(image), null, options);
464 return calcSampleSize(options, size);
465 }
466
467 private int calcSampleSize(File image, int size) {
468 BitmapFactory.Options options = new BitmapFactory.Options();
469 options.inJustDecodeBounds = true;
470 BitmapFactory.decodeFile(image.getAbsolutePath(), options);
471 return calcSampleSize(options, size);
472 }
473
474 private int calcSampleSize(BitmapFactory.Options options, int size) {
475 int height = options.outHeight;
476 int width = options.outWidth;
477 int inSampleSize = 1;
478
479 if (height > size || width > size) {
480 int halfHeight = height / 2;
481 int halfWidth = width / 2;
482
483 while ((halfHeight / inSampleSize) > size
484 && (halfWidth / inSampleSize) > size) {
485 inSampleSize *= 2;
486 }
487 }
488 return inSampleSize;
489 }
490
491 public Uri getJingleFileUri(Message message) {
492 File file = getFile(message);
493 return Uri.parse("file://" + file.getAbsolutePath());
494 }
495
496 public void updateFileParams(Message message) {
497 updateFileParams(message,null);
498 }
499
500 public void updateFileParams(Message message, URL url) {
501 DownloadableFile file = getFile(message);
502 if (message.getType() == Message.TYPE_IMAGE || file.getMimeType().startsWith("image/")) {
503 BitmapFactory.Options options = new BitmapFactory.Options();
504 options.inJustDecodeBounds = true;
505 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
506 int imageHeight = options.outHeight;
507 int imageWidth = options.outWidth;
508 if (url == null) {
509 message.setBody(Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
510 } else {
511 message.setBody(url.toString()+"|"+Long.toString(file.getSize()) + '|' + imageWidth + '|' + imageHeight);
512 }
513 } else {
514 if (url != null) {
515 message.setBody(url.toString()+"|"+Long.toString(file.getSize()));
516 } else {
517 message.setBody(Long.toString(file.getSize()));
518 }
519 }
520
521 }
522
523 public class FileCopyException extends Exception {
524 private static final long serialVersionUID = -1010013599132881427L;
525 private int resId;
526
527 public FileCopyException(int resId) {
528 this.resId = resId;
529 }
530
531 public int getResId() {
532 return resId;
533 }
534 }
535
536 public Bitmap getAvatar(String avatar, int size) {
537 if (avatar == null) {
538 return null;
539 }
540 Bitmap bm = cropCenter(getAvatarUri(avatar), size, size);
541 if (bm == null) {
542 return null;
543 }
544 return bm;
545 }
546
547 public boolean isFileAvailable(Message message) {
548 return getFile(message).exists();
549 }
550
551 public static void close(Closeable stream) {
552 if (stream != null) {
553 try {
554 stream.close();
555 } catch (IOException e) {
556 }
557 }
558 }
559}