Glassfish example source code file (AsadminTrustManager.java)

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Java - Glassfish tags/keywords

asadmintrustmanager, asadmintrustmanager, certificateexception, certificateexception, date, illegalargumentexception, io, net, object, runtimeexception, runtimeexception, ssl, string, string, text, trust, unsupportedoperationexception, util, x509certificate

The Glassfish AsadminTrustManager.java source code

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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
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package com.sun.enterprise.admin.util;

import java.io.Console;
import java.io.IOException;
import java.util.Date;
import java.util.Map;
import java.text.DateFormat;
import javax.net.ssl.X509TrustManager;
import java.security.cert.X509Certificate;
import java.security.cert.CertificateException;

import com.sun.enterprise.universal.i18n.LocalStringsImpl;
import com.sun.enterprise.security.store.AsadminTruststore;

/**
 * An implementation of {@link X509TrustManager} that provides basic support
 * for Trust Management.  It checks if the server is trusted and displays the
 * certificate that was received from the server.  The user is then prompted
 * to confirm the certificate.  If confirmed, the certificate is entered into
 * the client side asadmintruststore (default name is ~/.asadmintruststore).
 * Once in the truststore, the user is never prompted to confirm a second time.
 */
class AsadminTrustManager implements X509TrustManager {
        
    private final Object _alias;    
    private boolean _alreadyInvoked;
    private CertificateException _lastCertException;
    private RuntimeException _lastRuntimeException;
    
    private static final LocalStringsImpl strmgr =
        new LocalStringsImpl(AsadminTrustManager.class);

    /**
     * Creates an instance of the AsadminTrustManager
     * @param alias The toString() of the alias object concatenated with a
     * date/time stamp is used as the alias of the trusted server certificate
     * in the client side .asadmintruststore.  When null,
     * only a date / timestamp is used as an alias.
     */    
    public AsadminTrustManager(Object alias, Map env) {
        _alias = alias;
        _alreadyInvoked = false;
        _lastCertException = null;
        _lastRuntimeException = null;
    }
    
    /**
     * Creates an instance of the SunOneBasicX509TrustManager
     * A date/time stamp is used of the trusted server certificate in the
     * client side .asadmintruststore.
     */
    public AsadminTrustManager() {
        this (null, null);
    }

    /**
     * Checks if client is trusted given the certificate chain and
     * authorization type string, e.g., "RSA".
     * @throws {@link CertificateException}
     * @throws {@link UnsupportedOperationException}
     */
    public void checkClientTrusted(X509Certificate[] x509Certificate,
                                String authType) throws CertificateException {
        throw new UnsupportedOperationException(
                            "Not Implemented for Client Trust Management");
    }
 
    /**
     * Checs if the server is trusted.
     * @param chain The server certificate to be  validated.
     * @param authType
     * @throws CertificateException
     */    
    public void checkServerTrusted(X509Certificate[] chain, String authType) 
        throws CertificateException {
        // The alreadyInvoked flag keeps track of whether we have already
        // prompted the user.  Unfortunately, checkServerTrusted is called
        // two times and we want to avoid prompting the user twice. I'm not
        // sure of the root cause of this problem (i.e., why it is called
        // twice).  In addition, we keep track of any exception that occurred
        // on the first invocation and propagate that back.
        if (!_alreadyInvoked) {
            _alreadyInvoked = true;            
            try {
                checkCertificate(chain);                
            } catch (RuntimeException ex) {
                _lastRuntimeException = ex;
                throw ex;
            } catch (CertificateException ex) {
                _lastCertException = ex;
                throw ex;
            } 
        } else {
            if (_lastRuntimeException != null) {
                throw _lastRuntimeException;
            } else if (_lastCertException != null) {
                throw _lastCertException;
            }
        }
    }
 
    public X509Certificate[] getAcceptedIssuers() {
        return new X509Certificate[0];
    }
    
    /**
     * Displays the certificate and prompts the user whether or 
     * not it is trusted.
     * @param c
     * @throws IOException
     * @return true if the user trusts the certificate
     */    
    private boolean isItOKToAddCertToTrustStore(X509Certificate c)
                                throws IOException {                     
        Console cons = System.console();
        if (cons != null) {
            cons.printf("%s%n", c.toString());
            String result =
                cons.readLine("%s", strmgr.get("certificateTrustPrompt"));
            return result != null && result.equalsIgnoreCase("y");
        } else {
            return true;
        }        
    }
 
    private String getAliasName() {
        String aliasName = _alias != null ? _alias.toString() : "";
        // We append a timestamp to the alias to ensure that it is unqiue.    
        DateFormat f =
            DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG);
        aliasName += ":" + f.format(new Date());        
        return aliasName;
    }
 
    /**
     * This function validates the cert and ensures that it is trusted.
     * @param chain
     * @throws RuntimeException
     * @throws CertificateException
     */    
    protected void checkCertificate(X509Certificate[] chain)
                                throws RuntimeException, CertificateException,
                                IllegalArgumentException {        
        if (chain == null || chain.length == 0) {
            throw new IllegalArgumentException (strmgr.get(
                "emptyServerCertificate"));
        } 
        // First ensure that the certificate is valid.
        for (int i = 0 ; i < chain.length ; i ++) {
            chain[i].checkValidity();   
        }
        try {
            /*
             * Open the trust store, prompting the user if needed for a valid
             * password to use.
             */
            AsadminTruststore truststore = AsadminTruststore.newInstance();
            // if the certificate already exists in the truststore,
            // it is implicitly trusted
            if (!truststore.certificateExists(chain[0])) {
                // if the certificate does not exist in the truststore,
                // then we prompt the user.  Upon confirmation from the user,
                // the certificate is added to the truststore.
                if (isItOKToAddCertToTrustStore(chain[0])) {
                    truststore.addCertificate(getAliasName(), chain[0]);
                } else {
                    throw new CertificateException(strmgr.get(
                        "serverCertificateNotTrusted"));
                }
            }     
        } catch (CertificateException ex) {
            throw ex;
        } catch (Exception e) {        
            throw new RuntimeException(e);
        }        
    }
}