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// Copyright (C) 2013 The Android Open Source Project
//
// Licensed 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.google.gerrit.server.securestore;
import com.google.gerrit.common.FileUtil;
import com.google.gerrit.server.config.SitePaths;
import com.google.inject.Inject;
import com.google.inject.ProvisionException;
import com.google.inject.Singleton;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.internal.storage.file.LockFile;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.storage.file.FileBasedConfig;
import org.eclipse.jgit.util.FS;
@Singleton
public class DefaultSecureStore extends SecureStore {
private final FileBasedConfig sec;
private final Map<String, FileBasedConfig> pluginSec;
private final SitePaths site;
@Inject
DefaultSecureStore(SitePaths site) {
this.site = site;
sec = new FileBasedConfig(site.secure_config.toFile(), FS.DETECTED);
try {
sec.load();
} catch (IOException | ConfigInvalidException e) {
throw new RuntimeException("Cannot load secure.config", e);
}
this.pluginSec = new HashMap<>();
}
@Override
public String[] getList(String section, String subsection, String name) {
return sec.getStringList(section, subsection, name);
}
@Override
public synchronized String[] getListForPlugin(
String pluginName, String section, String subsection, String name) {
FileBasedConfig cfg = null;
if (pluginSec.containsKey(pluginName)) {
cfg = pluginSec.get(pluginName);
} else {
String filename = pluginName + ".secure.config";
File pluginConfigFile = site.etc_dir.resolve(filename).toFile();
if (pluginConfigFile.exists()) {
cfg = new FileBasedConfig(pluginConfigFile, FS.DETECTED);
try {
cfg.load();
pluginSec.put(pluginName, cfg);
} catch (IOException | ConfigInvalidException e) {
throw new RuntimeException("Cannot load " + filename, e);
}
}
}
return cfg != null ? cfg.getStringList(section, subsection, name) : null;
}
@Override
public void setList(String section, String subsection, String name, List<String> values) {
if (values != null) {
sec.setStringList(section, subsection, name, values);
} else {
sec.unset(section, subsection, name);
}
save();
}
@Override
public void unset(String section, String subsection, String name) {
sec.unset(section, subsection, name);
save();
}
@Override
public Iterable<EntryKey> list() {
List<EntryKey> result = new ArrayList<>();
for (String section : sec.getSections()) {
for (String subsection : sec.getSubsections(section)) {
for (String name : sec.getNames(section, subsection)) {
result.add(new EntryKey(section, subsection, name));
}
}
for (String name : sec.getNames(section)) {
result.add(new EntryKey(section, null, name));
}
}
return result;
}
@Override
public boolean isOutdated() {
return sec.isOutdated();
}
@Override
public void reload() {
try {
sec.load();
} catch (IOException | ConfigInvalidException e) {
throw new ProvisionException("Couldn't reload secure.config", e);
}
}
private void save() {
try {
saveSecure(sec);
} catch (IOException e) {
throw new RuntimeException("Cannot save secure.config", e);
}
}
private static void saveSecure(FileBasedConfig sec) throws IOException {
if (FileUtil.modified(sec)) {
final byte[] out = Constants.encode(sec.toText());
final File path = sec.getFile();
final LockFile lf = new LockFile(path);
if (!lf.lock()) {
throw new IOException("Cannot lock " + path);
}
try {
FileUtil.chmod(0600, new File(path.getParentFile(), path.getName() + ".lock"));
lf.write(out);
if (!lf.commit()) {
throw new IOException("Cannot commit write to " + path);
}
} finally {
lf.unlock();
}
}
}
}
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