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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.common.collect.Lists;
import com.google.gerrit.common.Nullable;
import java.util.List;

/**
 * Abstract class for providing new SecureStore implementation for Gerrit.
 *
 * 

SecureStore is responsible for storing sensitive data like passwords in a secure manner. * *

It is implementator's responsibility to encrypt and store values. * *

To deploy new SecureStore one needs to provide a jar file with explicitly one class that * extends {@code SecureStore} and put it in Gerrit server. Then run: * *

`java -jar gerrit.war SwitchSecureStore -d $gerrit_site --new-secure-store-lib * $path_to_new_secure_store.jar` * *

on stopped Gerrit instance. */ public abstract class SecureStore { /** Describes {@link SecureStore} entry */ public static class EntryKey { public final String name; public final String section; public final String subsection; /** Creates EntryKey */ public EntryKey(String section, String subsection, String name) { this.name = name; this.section = section; this.subsection = subsection; } } /** * Extract decrypted value of stored property from SecureStore or {@code null} when property was * not found. * * @return decrypted String value or {@code null} if not found */ @Nullable public final String get(String section, String subsection, String name) { String[] values = getList(section, subsection, name); if (values != null && values.length > 0) { return values[0]; } return null; } /** * Extract decrypted value of stored plugin config property from SecureStore or {@code null} when * property was not found. * * @return decrypted String value or {@code null} if not found */ @Nullable public final String getForPlugin( String pluginName, String section, String subsection, String name) { String[] values = getListForPlugin(pluginName, section, subsection, name); if (values != null && values.length > 0) { return values[0]; } return null; } /** * Extract list of plugin config values from SecureStore and decrypt every value in that list, or * {@code null} when property was not found. * * @return decrypted list of string values or {@code null} */ public abstract String[] getListForPlugin( String pluginName, String section, String subsection, String name); /** * Extract list of values from SecureStore and decrypt every value in that list or {@code null} * when property was not found. * * @return decrypted list of string values or {@code null} */ public abstract String[] getList(String section, String subsection, String name); /** * Store single value in SecureStore. * *

This method is responsible for encrypting value and storing it. * * @param value plain text value */ public final void set(String section, String subsection, String name, String value) { setList(section, subsection, name, Lists.newArrayList(value)); } /** * Store list of values in SecureStore. * *

This method is responsible for encrypting all values in the list and storing them. * * @param values list of plain text values */ public abstract void setList(String section, String subsection, String name, List values); /** * Remove value for given {@code section}, {@code subsection} and {@code name} from SecureStore. */ public abstract void unset(String section, String subsection, String name); /** Returns list of stored entries. */ public abstract Iterable list(); /** Returns true if currently loaded values are outdated */ public abstract boolean isOutdated(); /** Reload the values */ public abstract void reload(); }





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