/*
* Copyright (C) 2010-2016 JPEXS
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.jpexs.browsers.cache.chrome;
import com.jpexs.browsers.cache.CacheEntry;
import com.jpexs.browsers.cache.CacheImplementation;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author JPEXS
*/
public class ChromeCache implements CacheImplementation {
private static volatile ChromeCache instance;
private File tempDir;
private List<File> dataFiles;
private File indexFile;
private ChromeCache() {
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
free();
}
});
}
public static ChromeCache getInstance() {
if (instance == null) {
synchronized (ChromeCache.class) {
if (instance == null) {
instance = new ChromeCache();
}
}
}
return instance;
}
private boolean loaded = false;
private Index index;
@Override
public List<CacheEntry> getEntries() {
if (!loaded) {
refresh();
}
if (!loaded) {
return null;
}
List<CacheEntry> ret = new ArrayList<>();
try {
List<EntryStore> entries = index.getEntries();
for (EntryStore en : entries) {
if (en.state == EntryStore.ENTRY_NORMAL) {
String key = en.getKey();
if (key != null && !key.trim().isEmpty()) {
ret.add(en);
}
}
}
} catch (IOException ex) {
Logger.getLogger(ChromeCache.class.getName()).log(Level.SEVERE, null, ex);
return null;
}
return ret;
}
@Override
public void refresh() {
free();
File cacheDir = null;
try {
cacheDir = getCacheDirectory();
} catch (IOException ex) {
Logger.getLogger(ChromeCache.class.getName()).log(Level.SEVERE, null, ex);
}
if (cacheDir == null) {
return;
}
File systemTempDir = new File(System.getProperty("java.io.tmpdir"));
File originalIndexFile = new File(cacheDir + File.separator + "index");
tempDir = new File(systemTempDir, "cacheView" + System.identityHashCode(this));
tempDir.deleteOnExit();
tempDir.mkdir();
indexFile = new File(tempDir, "index");
indexFile.deleteOnExit();
try {
Files.copy(originalIndexFile.toPath(), indexFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
} catch (IOException ex) {
Logger.getLogger(ChromeCache.class.getName()).log(Level.SEVERE, null, ex);
return;
}
File originalDataFile;
dataFiles = new ArrayList<>();
for (int i = 0; (originalDataFile = new File(cacheDir, "data_" + i)).exists(); i++) {
File dataFile = new File(tempDir, "data_" + i);
dataFile.deleteOnExit();
dataFiles.add(dataFile);
try {
Files.copy(originalDataFile.toPath(), dataFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
} catch (IOException ex) {
Logger.getLogger(ChromeCache.class.getName()).log(Level.SEVERE, null, ex);
return;
}
}
try {
index = new Index(indexFile, cacheDir);
} catch (IOException ex) {
Logger.getLogger(ChromeCache.class.getName()).log(Level.SEVERE, null, ex);
}
loaded = true;
}
private enum OSId {
WINDOWS, OSX, UNIX
}
private static OSId getOSId() {
PrivilegedAction<String> doGetOSName = new PrivilegedAction<String>() {
@Override
public String run() {
return System.getProperty("os.name");
}
};
OSId id = OSId.UNIX;
String osName = AccessController.doPrivileged(doGetOSName);
if (osName != null) {
if (osName.toLowerCase().startsWith("mac os x")) {
id = OSId.OSX;
} else if (osName.contains("Windows")) {
id = OSId.WINDOWS;
}
}
return id;
}
public static File getCacheDirectory() throws IOException {
String userHome = null;
File ret = null;
try {
userHome = System.getProperty("user.home");
} catch (SecurityException ignore) {
}
if (userHome != null) {
OSId osId = getOSId();
if (osId == OSId.WINDOWS) {
ret = new File(userHome + "\\AppData\\Local\\Google\\Chrome\\User Data\\Default\\Cache\\");
if (!ret.exists()) {
ret = new File(userHome + "\\Local Settings\\Application Data\\Google\\Chrome\\User Data\\Default\\Cache");
}
} else if (osId == OSId.OSX) {
ret = new File(userHome + "/Library/Caches/Google/Chrome/Default/Cache");
} else {
ret = new File(userHome + "/.config/google-chrome/Default/Application Cache/Cache/");
if (!ret.exists()) {
ret = new File(userHome + "/.cache/chromium/Default/Cache");
}
}
}
if ((ret != null) && !ret.exists()) {
return null;
}
return ret;
}
private void free() {
if (loaded) {
index.free();
indexFile.delete();
for (File d : dataFiles) {
d.delete();
}
tempDir.delete();
}
}
}