com.sun.enterprise.security.auth.digest.impl.CNonceCacheImpl Maven / Gradle / Ivy

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// Portions Copyright [2018] [Payara Foundation and/or its affiliates]
package com.sun.enterprise.security.auth.digest.impl;

import static com.sun.logging.LogDomains.SECURITY_LOGGER;
import static java.util.logging.Level.WARNING;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.glassfish.hk2.api.PerLookup;
import org.glassfish.security.common.CNonceCache;
import org.glassfish.security.common.NonceInfo;
import org.jvnet.hk2.annotations.Service;

import com.sun.logging.LogDomains;

/**
 *
 * @author vbkumarjayanti
 */
@Service(name = "CNonceCache")
@PerLookup
public final class CNonceCacheImpl extends LinkedHashMap implements CNonceCache {

    private static final long serialVersionUID = 1L;
    
    private Logger _logger = LogDomains.getLogger(CNonceCacheImpl.class, SECURITY_LOGGER);
    private static final long LOG_SUPPRESS_TIME = 5 * 60 * 1000;

    private long lastLog = 0;
    private String eldestCNonce;

    /**
     * Maximum number of client nonces to keep in the cache. If not specified, the default value of 1000 is used.
     */
    long cnonceCacheSize = 1000;

    /**
     * How long server nonces are valid for in milliseconds. Defaults to 5 minutes.
     */
    long nonceValidity = 5 * 60 * 1000;
    
    @Override
    public void init(long size, String name, long validity, Map props) {
        this.cnonceCacheSize = size;
        this.nonceValidity = validity;
    }

    @Override
    protected boolean removeEldestEntry(Map.Entry eldest) {
        // This is called from a sync so keep it simple
        long currentTime = System.currentTimeMillis();
        
        eldestCNonce = eldest.getKey();
        if (size() > getCnonceCacheSize()) {
            if (lastLog < currentTime && currentTime - eldest.getValue().getTimestamp() < getNonceValidity()) {
                // Replay attack is possible
                _logger.log(WARNING, "digestAuthenticator.cacheRemove");
                lastLog = currentTime + LOG_SUPPRESS_TIME;
            }
            return true;
        }
        
        return false;
    }

    /**
     * @return the cnonceCacheSize
     */
    @Override
    public long getCnonceCacheSize() {
        return cnonceCacheSize;
    }

    /**
     * @return the nonceValidity
     */
    @Override
    public long getNonceValidity() {
        return nonceValidity;
    }

    /**
     * @return the eldestCNonce
     */
    public String getEldestCNonce() {
        return eldestCNonce;
    }

    @Override
    public void setCnonceCacheSize(long cnonceCacheSize) {
        this.cnonceCacheSize = cnonceCacheSize;
    }

    @Override
    public void setNonceValidity(long nonceValidity) {
        this.nonceValidity = nonceValidity;
    }

    @Override
    public void destroy() {
        clear();
    }

}