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