Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.doplgangr.secrecy.FileSystem; import android.content.ContentResolver; import android.content.Context; import android.net.Uri; import android.webkit.MimeTypeMap; import com.doplgangr.secrecy.Config; import com.doplgangr.secrecy.Listeners; import com.doplgangr.secrecy.Util; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import java.io.BufferedInputStream; import java.io.FileFilter; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.Serializable; import java.util.Arrays; import java.util.List; import java.util.regex.Pattern; import javax.crypto.CipherOutputStream; import static com.ipaulpro.afilechooser.utils.FileUtils.getPath; public class Vault implements Serializable { private final String name; private final String path; public Boolean wrongPass = true; private String key = "0123784"; public Vault(String name, String secret) { this.key = secret; this.name = name; path = storage.getRoot().getAbsolutePath() + "/" + name; initialize(); } public Vault(String name, String secret, Boolean istemp) { this.key = secret; this.name = name; path = storage.getRoot().getAbsolutePath() + "/" + name; //do not initialize now coz this is temp } private static boolean fileFilter(java.io.File file) { String regex = "^((?!_thumb|.nomedia).)*$"; //Filter out .nomedia and thumbnails String name = file.getName(); final Pattern p = Pattern.compile(regex); p.matcher(name).matches(); return p.matcher(name).matches(); } public String getName() { return name; } public void initialize() { java.io.File nomedia = new java.io.File(storage.getRoot().getAbsolutePath() + "/" + name + "/.nomedia"); if (!nomedia.exists()) return; File nomediafile = new File(nomedia, key); java.io.File tempnomedia = nomediafile.readFile(new CryptStateListener() { @Override public void updateProgress(int progress) { } @Override public void setMax(int max) { } @Override public void onFailed(int statCode) { } @Override public void Finished() { } }); if (tempnomedia != null) { wrongPass = false; storage.purgeFile(tempnomedia); } Util.log("Password is Wrong=", wrongPass); } public void iterateAllFiles(onFileFoundListener listener) { List<java.io.File> files = getFileList(); for (java.io.File file : files) listener.dothis(new File(file, key)); } public int getCount() { return getFileList().size(); } public String addFile(final Context context, final Uri uri) { String filename = uri.getLastPathSegment(); try { String realPath = getPath(context, uri); Util.log(realPath, filename); filename = new java.io.File(realPath).getName(); // If we can use real path, better use one. } catch (Exception ignored) { // Leave it. } if (!filename.contains("_thumb") && !filename.contains(".nomedia")) { ContentResolver cR = context.getContentResolver(); MimeTypeMap mime = MimeTypeMap.getSingleton(); String type = mime.getExtensionFromMimeType(cR.getType(uri)); if (type != null) filename = Base64Coder.encodeString(FilenameUtils.removeExtension(filename)) + "." + type; } InputStream is = null; OutputStream out = null; try { InputStream stream = context.getContentResolver().openInputStream(uri); java.io.File addedFile = new java.io.File(path + "/" + filename); addedFile.delete(); addedFile.createNewFile(); is = new BufferedInputStream(stream); byte buffer[] = new byte[Config.bufferSize]; int count; AES_Encryptor enc = new AES_Encryptor(key); out = new CipherOutputStream(new FileOutputStream(addedFile), enc.encryptstream()); while ((count = is.read(buffer)) != -1) out.write(buffer, 0, count); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } finally { try { if (is != null) { is.close(); } if (out != null) { out.close(); } } catch (IOException e) { e.printStackTrace(); } } return filename; } public File getFileInstance(String name) { java.io.File requestedFile = new java.io.File(path, name); return new File(requestedFile, key); } public Boolean delete() { if (!wrongPass) try { FileUtils.deleteDirectory(new java.io.File(path)); } catch (IOException e) { e.printStackTrace(); } return !wrongPass; } private List<java.io.File> getFileList() { java.io.File folder = new java.io.File(path); return Arrays.asList(folder.listFiles(new FileFilter() { @Override public boolean accept(java.io.File file) { return fileFilter(file); } })); } public Vault rename(String name) { if (wrongPass) return null; //bye java.io.File folder = new java.io.File(path); java.io.File newFoler = new java.io.File(folder.getParent(), name); try { FileUtils.copyDirectory(folder, newFoler); } catch (IOException e) { // New Folder should be cleared. Only preserver old folder try { FileUtils.deleteDirectory(newFoler); } catch (IOException ignored) { //ignore } return null; } try { FileUtils.deleteDirectory(folder); } catch (IOException ignored) { //ignored } return new Vault(name, key); } public void startWatching(final Listeners.FileObserverEventListener mListener) { final android.os.FileObserver observer = new android.os.FileObserver(path) { // set up a file observer to watch this directory on sd card @Override public void onEvent(int event, String filename) { if (filename != null) { java.io.File file = new java.io.File(path, filename); if (fileFilter(file)) { if (event == android.os.FileObserver.CREATE || event == android.os.FileObserver.MOVED_TO) mListener.add(file); if (event == android.os.FileObserver.DELETE || event == android.os.FileObserver.MOVED_FROM) mListener.remove(file); } } } }; observer.startWatching(); //START OBSERVING } public interface onFileFoundListener { void dothis(File file); } }