/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2009. (c) 2009.
* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* . pas le cas, consultez :
* .
*
* $Revision: 4 $
*
************************************************************************
*/
package ca.nrc.cadc.cred.server;
import java.io.IOException;
import java.io.Writer;
import java.security.AccessControlContext;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.GeneralSecurityException;
import java.security.InvalidKeyException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.X509Certificate;
import java.util.Set;
import javax.security.auth.Subject;
import javax.security.auth.x500.X500Principal;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMWriter;
import ca.nrc.cadc.auth.AuthenticationUtil;
import ca.nrc.cadc.auth.X509CertificateChain;
import ca.nrc.cadc.cred.CertUtil;
import org.apache.log4j.Logger;
import org.astrogrid.security.delegation.CertificateSigningRequest;
import org.astrogrid.security.delegation.Delegations;
import org.astrogrid.security.delegation.Util;
/**
* Implementation of the base Delegations that stores certificates in a
* relational database.
*
* @author pdowler
*/
public class DatabaseDelegations extends Delegations
{
private static final Logger log = Logger.getLogger(DatabaseDelegations.class);
private CertificateDAO certificateDAO = null;
private KeyPairGenerator keyPairGenerator;
protected DatabaseDelegations(String dataSourceName, CertificateDAO.CertificateSchema config)
{
// Add the Bouncy Castle JCE provider. This allows the CSR
// classes to work. The BC implementation of PKCS#10 depends on
// the ciphers in the BC provider.
if (Security.getProvider("BC") == null)
{
Security.addProvider(new BouncyCastleProvider());
}
try
{
keyPairGenerator = KeyPairGenerator.getInstance("RSA");
keyPairGenerator.initialize(CertUtil.DEFAULT_KEY_LENGTH);
}
catch (NoSuchAlgorithmException ex)
{
throw new RuntimeException("BUG/CONFIG: cannot load RSA key-pair generator", ex);
}
certificateDAO = new CertificateDAO(config);
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#initializeIdentity(java.lang.String)
*/
@Override
public String initializeIdentity(String identity) throws GeneralSecurityException
{
try
{
String canonizedDn = AuthenticationUtil.canonizeDistinguishedName(identity);
X500Principal p = new X500Principal(canonizedDn);
return initializeIdentity(p);
}
catch(GeneralSecurityException gex)
{
log.debug("initializeIdentity failed", gex);
throw gex;
}
catch(RuntimeException t)
{
log.debug("initializeIdentity failed", t);
throw t;
}
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#initializeIdentity(javax.security.auth.x500.X500Principal)
*/
@Override
public String initializeIdentity(X500Principal principal) throws GeneralSecurityException
{
try
{
String canonizedDn = AuthenticationUtil.canonizeDistinguishedName(principal.getName());
X500Principal p = new X500Principal(canonizedDn);
String hashKey = hash(p);
KeyPair keyPair = this.keyPairGenerator.generateKeyPair();
PrivateKey privateKey = keyPair.getPrivate();
log.debug("creating CertificateSigningRequest: " + canonizedDn + "," + keyPair);
CertificateSigningRequest csr = new CertificateSigningRequest(canonizedDn, keyPair);
X509CertificateChain chain = new X509CertificateChain(p, privateKey, Util.getCsrString(csr));
certificateDAO.put(chain);
return hashKey;
}
catch(GeneralSecurityException gex)
{
log.debug("initializeIdentity failed", gex);
throw gex;
}
catch(RuntimeException t)
{
log.debug("initializeIdentity failed", t);
throw t;
}
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getCsr(java.lang.String)
*/
@Override
public CertificateSigningRequest getCsr(String hashKey)
{
X509CertificateChain x509CertificateChain = certificateDAO.get(hashKey);
if (x509CertificateChain == null)
{
return null;
}
String csrString = x509CertificateChain.getCsrString();
CertificateSigningRequest csr = Util.getCsrFromString(csrString);
return csr;
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getPrivateKey(java.lang.String)
*/
@Override
public PrivateKey getPrivateKey(String hashKey)
{
X509CertificateChain x509CertificateChain = certificateDAO.get(hashKey);
if (x509CertificateChain == null)
{
return null;
}
return x509CertificateChain.getPrivateKey();
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getCertificate(java.lang.String)
*/
@Override
public X509Certificate[] getCertificates(String hashKey)
{
X509CertificateChain x509CertificateChain = certificateDAO.get(hashKey);
if (x509CertificateChain == null)
{
return null;
}
return x509CertificateChain.getChain();
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#remove(java.lang.String)
*/
@Override
public void remove(String hashKey)
{
certificateDAO.delete(hashKey);
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#isKnown(java.lang.String)
*/
@Override
public boolean isKnown(String hashKey)
{
X509CertificateChain chain = certificateDAO.get(hashKey);
return (chain != null);
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#setCertificate(java.lang.String, java.security.cert.X509Certificate)
*/
@Override
public void setCertificates(String hashKey, X509Certificate[] certificates) throws InvalidKeyException
{
X509CertificateChain chain = certificateDAO.get(hashKey);
if (chain != null)
{
chain.setChain(certificates);
certificateDAO.put(chain);
}
else
throw new InvalidKeyException("No identity matches the hash key " + hashKey);
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getPrincipals()
*/
@Override
public Object[] getPrincipals()
{
// List hashKeyList = certificateDAO.getAllHashKeys();
// return hashKeyList.toArray();
//TODO AD: this is a workaround to send the hash to the caller when it
// does a listing.
AccessControlContext acContext = AccessController.getContext();
Subject subject = Subject.getSubject(acContext);
Set principals = subject
.getPrincipals(X500Principal.class);
if (principals.size() == 0)
{
throw new AccessControlException(
"Delegation failed because the caller is not authenticated.");
}
else if (principals.size() > 1)
{
throw new AccessControlException(
"Delegation failed because caller autheticated with multiple certificates.");
}
return new String[] { X509CertificateChain.genHashKey(principals
.iterator().next()) };
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getName(java.lang.String)
*/
@Override
public String getName(String hashKey)
{
X509CertificateChain x509CertificateChain = certificateDAO.get(hashKey);
if (x509CertificateChain == null)
{
return null;
}
String dn = x509CertificateChain.getPrincipal().getName();
return dn;
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#getKeys(java.lang.String)
*/
@Override
public KeyPair getKeys(String hashKey)
{
throw new RuntimeException("getKeys() not implemented in DAO version implementation.");
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#hasCertificate(java.lang.String)
*/
@Override
public boolean hasCertificate(String hashKey)
{
X509CertificateChain chain = certificateDAO.get(hashKey);
return (chain.getChain() != null);
}
/* (non-Javadoc)
* @see org.astrogrid.security.delegation.Delegations#writeCertificate(java.lang.String, java.io.Writer)
*/
@Override
public void writeCertificate(String hashKey, Writer out) throws IOException
{
PEMWriter pem = new PEMWriter(out);
X509Certificate[] certs = getCertificates(hashKey);
if (certs == null)
{
throw new IllegalArgumentException(
"No certificate corresponding to the haskey: " + hashKey);
}
for (X509Certificate cert : certs)
{
pem.writeObject(cert);
}
pem.flush();
pem.close();
}
}