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