aboutsummaryrefslogtreecommitdiffstats
path: root/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
blob: 8abbb0cb0d5bcb082ffe295e058bb3737474d2c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
package eu.siacs.conversations.persistance;

import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.util.Log;
import android.webkit.MimeTypeMap;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import de.thedevstack.android.logcat.Logging;
import de.thedevstack.conversationsplus.ConversationsPlusApplication;
import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
import de.thedevstack.conversationsplus.exceptions.FileCopyException;
import de.thedevstack.conversationsplus.persistance.observers.FileDeletionObserver;
import de.thedevstack.conversationsplus.utils.StreamUtil;
import eu.siacs.conversations.Config;
import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.DownloadableFile;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.XmppConnectionService;

public class FileBackend {
	private static final SimpleDateFormat imageDateFormat = new SimpleDateFormat("yyyyMMdd_HHmmssSSS", Locale.US);
    private static FileBackend INSTANCE;

    private FileDeletionObserver privateFilesDirectoryObserver;
    private FileDeletionObserver privateFilesImageDirectoryObserver;
    private FileDeletionObserver conversationsFilesDirectoryObserver;
    private FileDeletionObserver conversationsImagesDirectoryObserver;

    public static void init() {
        if (null == INSTANCE) {
            INSTANCE = new FileBackend();
        }
        INSTANCE.initFileObservers();
        INSTANCE.createNoMedia();
    }

    private void initFileObservers() {
        this.privateFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getPrivateFileDirectoryPath());
        this.privateFilesImageDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
        this.conversationsFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsImageDirectory());
        this.conversationsImagesDirectoryObserver = new FileDeletionObserver(FileBackend.getPrivateImageDirectoryPath());

        this.privateFilesDirectoryObserver.startWatching();
        this.privateFilesImageDirectoryObserver.startWatching();
        this.conversationsFilesDirectoryObserver.startWatching();
        this.conversationsImagesDirectoryObserver.startWatching();
    }

	private void createNoMedia() {
		final File nomedia = new File(getConversationsFileDirectory()+".nomedia");
		if (!nomedia.exists()) {
			try {
				nomedia.createNewFile();
			} catch (Exception e) {
				Log.d(Config.LOGTAG, "could not create nomedia file");
			}
		}
	}

    public static void onFileTransferFolderChanged() {
        INSTANCE.conversationsFilesDirectoryObserver.stopWatching();
        INSTANCE.conversationsFilesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsFileDirectory());
        INSTANCE.conversationsFilesDirectoryObserver.startWatching();
        INSTANCE.createNoMedia();
    }

    public static void onImageTransferFolderChanged() {
        INSTANCE.conversationsImagesDirectoryObserver.stopWatching();
        INSTANCE.conversationsImagesDirectoryObserver = new FileDeletionObserver(FileBackend.getConversationsImageDirectory());
        INSTANCE.conversationsImagesDirectoryObserver.startWatching();
    }

	public static void updateMediaScanner(File file, XmppConnectionService xmppConnectionService) {
		if (file.getAbsolutePath().startsWith(getConversationsImageDirectory())) {
			Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
			intent.setData(Uri.fromFile(file));
			xmppConnectionService.sendBroadcast(intent);
		}
	}

	public static boolean deleteFile(Message message, XmppConnectionService xmppConnectionService) {
		File file = getFile(message);
		if (file.delete()) {
			updateMediaScanner(file, xmppConnectionService);
			return true;
		} else {
			return false;
		}
	}

	public static DownloadableFile getFile(Message message) {
		return getFile(message, true);
	}

	public static DownloadableFile getFile(Message message, boolean decrypted) {
		final boolean encrypted = !decrypted
				&& (message.getEncryption() == Message.ENCRYPTION_PGP
				|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED);
		final DownloadableFile file;
		String path = message.getRelativeFilePath();
		if (path == null) {
			path = message.getUuid();
		}
		if (path.startsWith("/")) {
			file = new DownloadableFile(path);
		} else {
			String mime = message.getMimeType();
			if (mime != null && mime.startsWith("image")) {
				file = new DownloadableFile(getConversationsImageDirectory() + path);
			} else {
				file = new DownloadableFile(getConversationsFileDirectory() + path);
			}
		}
		if (encrypted) {
			return new DownloadableFile(getConversationsFileDirectory() + file.getName() + ".pgp");
		} else {
			return file;
		}
	}

	public static String getConversationsFileDirectory() {
		return  Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + ConversationsPlusPreferences.fileTransferFolder() + File.separator;
	}

	public static String getConversationsImageDirectory() {
		return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsolutePath() + File.separator + ConversationsPlusPreferences.imgTransferFolder() + File.separator;
	}

    public static String getPrivateFileDirectoryPath() {
        return ConversationsPlusApplication.getPrivateFilesDir().getAbsolutePath();
    }

    private static String getPrivateImageDirectoryPath() {
        return FileBackend.getPrivateFileDirectoryPath() + File.separator + "Images" + File.separator;
    }

	public static void copyFileToPrivateStorage(File file, Uri uri) throws FileCopyException {
		file.getParentFile().mkdirs();
		OutputStream os = null;
		InputStream is = null;
		try {
			file.createNewFile();
			os = new FileOutputStream(file);
			is = StreamUtil.openInputStreamFromContentResolver(uri);
			byte[] buffer = new byte[1024];
			int length;
			while ((length = is.read(buffer)) > 0) {
				os.write(buffer, 0, length);
			}
			os.flush();
		} catch(FileNotFoundException e) {
			throw new FileCopyException(R.string.error_file_not_found);
		} catch (IOException e) {
			e.printStackTrace();
			throw new FileCopyException(R.string.error_io_exception);
		} finally {
			StreamUtil.close(os);
			StreamUtil.close(is);
		}
		Logging.d(Config.LOGTAG, "output file name " + file);
	}

	public static void copyFileToPrivateStorage(Message message, Uri uri) throws FileCopyException {
		Log.d(Config.LOGTAG, "copy " + uri.toString() + " to private storage");
		String mime = ConversationsPlusApplication.getInstance().getContentResolver().getType(uri);
		String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mime);
		message.setRelativeFilePath(message.getUuid() + "." + extension);
		copyFileToPrivateStorage(getFile(message), uri);
	}

    public static DownloadableFile compressImageAndCopyToPrivateStorage(Message message, Bitmap scaledBitmap) throws FileCopyException {
        message.setRelativeFilePath(FileBackend.getPrivateImageDirectoryPath() + message.getUuid() + ".jpg");
        DownloadableFile file = getFile(message);
        file.getParentFile().mkdirs();
        OutputStream os = null;
        try {
            file.createNewFile();
            os = new FileOutputStream(file);

            boolean success = scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 75, os);
            if (!success) {
                throw new FileCopyException(R.string.error_compressing_image);
            }
            os.flush();
        } catch (IOException e) {
            throw new FileCopyException(R.string.error_io_exception, e);
        } catch (SecurityException e) {
            throw new FileCopyException(R.string.error_security_exception_during_image_copy);
        } catch (NullPointerException e) {
            throw new FileCopyException(R.string.error_io_exception);
        } finally {
            StreamUtil.close(os);
        }
        return file;
    }

	public static Uri getTakePhotoUri() {
		StringBuilder pathBuilder = new StringBuilder();
		pathBuilder.append(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM));
		pathBuilder.append('/');
		pathBuilder.append("Camera");
		pathBuilder.append('/');
		pathBuilder.append("IMG_" + imageDateFormat.format(new Date()) + ".jpg");
		Uri uri = Uri.parse("file://" + pathBuilder.toString());
		File file = new File(uri.toString());
		file.getParentFile().mkdirs();
		return uri;
	}

	public static Uri getJingleFileUri(Message message) {
		File file = getFile(message);
		return Uri.parse("file://" + file.getAbsolutePath());
	}

	public static boolean isFileAvailable(Message message) {
		return getFile(message).exists();
	}

    private FileBackend() {
        // Static helper class
    }
}