org.wso2.carbon.appfactory.git.UserPasswordCache.java Source code

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Here is the source code for org.wso2.carbon.appfactory.git.UserPasswordCache.java

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/*
 * Copyright (c) 2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 *    WSO2 Inc. 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 org.wso2.carbon.appfactory.git;

import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.TimeUnit;

/**
 * Guva cache based cache for hashed password
 */
public class UserPasswordCache {
    private static final Logger log = LoggerFactory.getLogger(UserPasswordCache.class);
    private Cache<String, byte[]> cache;

    public UserPasswordCache(GitBlitConfiguration configuration) {
        int cacheExpiryTime = Integer
                .parseInt(configuration.getProperty(GitBlitConstants.APPFACTORY_CACHE_EXPIRY_TIME, "1"));
        cache = CacheBuilder.newBuilder().maximumSize(1000).expireAfterWrite(cacheExpiryTime, TimeUnit.MINUTES)
                .build();
    }

    public void put(String user, String password) {
        byte[] pwd;

        try {
            MessageDigest md = MessageDigest.getInstance("SHA-512");
            md.update(password.getBytes());
            pwd = md.digest();
        } catch (NoSuchAlgorithmException e) {
            log.error("Specified hashing algorithm is not found ", e);
            return;
        }

        cache.put(user, pwd);
    }

    public byte[] get(String user, String password) {

        return cache.getIfPresent(user);
    }

    public static byte[] getHashedPassword(String password) {
        byte[] pwd = new byte[0];
        try {
            MessageDigest md = MessageDigest.getInstance("SHA-512");
            md.update(password.getBytes());
            pwd = md.digest();
        } catch (NoSuchAlgorithmException e) {
            log.error("Specified hashing algorithm is not found ", e);
        }
        return pwd;
    }
}