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/**
* The FreeBSD Copyright
* Copyright 1994-2008 The FreeBSD Project. All rights reserved.
* Copyright (C) 2013-2016 Philip Helger philip[at]helger[dot]com
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE FREEBSD PROJECT ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FREEBSD PROJECT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the FreeBSD Project.
*/
package com.helger.as2lib.cert;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.PrivateKey;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Enumeration;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.WillClose;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.helger.as2lib.exception.OpenAS2Exception;
import com.helger.as2lib.exception.WrappedOpenAS2Exception;
import com.helger.as2lib.message.IMessage;
import com.helger.as2lib.message.IMessageMDN;
import com.helger.as2lib.params.InvalidParameterException;
import com.helger.as2lib.partner.Partnership;
import com.helger.as2lib.session.IAS2Session;
import com.helger.as2lib.util.AS2Helper;
import com.helger.as2lib.util.IStringMap;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.Nonempty;
import com.helger.commons.annotation.OverrideOnDemand;
import com.helger.commons.annotation.ReturnsMutableCopy;
import com.helger.commons.collection.CollectionHelper;
import com.helger.commons.collection.ext.CommonsLinkedHashMap;
import com.helger.commons.collection.ext.ICommonsOrderedMap;
import com.helger.commons.io.EAppend;
import com.helger.commons.io.file.FileHelper;
import com.helger.commons.io.stream.StreamHelper;
/**
* An implementation of a file-based certificate factory using BouncyCastle
* PKCS12 format.
*
* @author Philip Helger
*/
public class PKCS12CertificateFactory extends AbstractCertificateFactory implements
IAliasedCertificateFactory,
IKeyStoreCertificateFactory,
IStorableCertificateFactory
{
public static final String ATTR_FILENAME = "filename";
public static final String ATTR_PASSWORD = "password";
public static final String ATTR_SAVE_CHANGES_TO_FILE = "autosave";
private static final Logger s_aLogger = LoggerFactory.getLogger (PKCS12CertificateFactory.class);
private KeyStore m_aKeyStore;
public PKCS12CertificateFactory ()
{}
@Override
public void initDynamicComponent (@Nonnull final IAS2Session aSession,
@Nullable final IStringMap aOptions) throws OpenAS2Exception
{
super.initDynamicComponent (aSession, aOptions);
try
{
m_aKeyStore = AS2Helper.getCryptoHelper ().createNewKeyStore ();
}
catch (final Exception ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
load (getFilename (), getPassword ());
}
@Override
@Nonnull
public String getAlias (@Nonnull final Partnership aPartnership,
@Nonnull final ECertificatePartnershipType ePartnershipType) throws OpenAS2Exception
{
ValueEnforcer.notNull (aPartnership, "Partnership");
ValueEnforcer.notNull (ePartnershipType, "PartnershipType");
String sAlias = null;
switch (ePartnershipType)
{
case RECEIVER:
sAlias = aPartnership.getReceiverX509Alias ();
break;
case SENDER:
sAlias = aPartnership.getSenderX509Alias ();
break;
}
if (sAlias == null)
throw new CertificateNotFoundException (ePartnershipType, aPartnership);
return sAlias;
}
@Override
@Nonnull
protected X509Certificate internalGetCertificate (@Nullable final String sAlias,
@Nullable final ECertificatePartnershipType ePartnershipType) throws OpenAS2Exception
{
try
{
final KeyStore aKeyStore = getKeyStore ();
final X509Certificate aCert = (X509Certificate) aKeyStore.getCertificate (sAlias);
if (aCert == null)
throw new CertificateNotFoundException (ePartnershipType, sAlias);
return aCert;
}
catch (final KeyStoreException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
@Nonnull
public X509Certificate getCertificate (@Nullable final String sAlias) throws OpenAS2Exception
{
return internalGetCertificate (sAlias, null);
}
@Nonnull
@ReturnsMutableCopy
public ICommonsOrderedMap getCertificates () throws OpenAS2Exception
{
final KeyStore aKeyStore = getKeyStore ();
try
{
final ICommonsOrderedMap aCerts = new CommonsLinkedHashMap<> ();
final Enumeration aAliases = aKeyStore.aliases ();
while (aAliases.hasMoreElements ())
{
final String sCertAlias = aAliases.nextElement ();
aCerts.put (sCertAlias, aKeyStore.getCertificate (sCertAlias));
}
return aCerts;
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void setFilename (@Nullable final String sFilename)
{
setAttribute (ATTR_FILENAME, sFilename);
}
@Nonnull
public String getFilename () throws InvalidParameterException
{
return getAttributeAsStringRequired (ATTR_FILENAME);
}
@Nonnull
public KeyStore getKeyStore ()
{
if (m_aKeyStore == null)
throw new IllegalStateException ("No keystore present");
return m_aKeyStore;
}
public void setPassword (@Nonnull final char [] aPassword)
{
setAttribute (ATTR_PASSWORD, new String (aPassword));
}
@Nonnull
public char [] getPassword () throws InvalidParameterException
{
return getAttributeAsStringRequired (ATTR_PASSWORD).toCharArray ();
}
public void setSaveChangesToFile (final boolean bSaveChangesToFile)
{
setAttribute (ATTR_SAVE_CHANGES_TO_FILE, bSaveChangesToFile);
}
public boolean isSaveChangesToFile ()
{
return getAttributeAsBoolean (ATTR_SAVE_CHANGES_TO_FILE, DEFAULT_SAVE_CHANGES_TO_FILE);
}
/**
* Custom callback method that is invoked if something changes in the
* keystore. By default the changes are written back to disk.
*
* @throws OpenAS2Exception
* In case saving fails.
* @see #isSaveChangesToFile()
* @see #setSaveChangesToFile(boolean)
*/
@OverrideOnDemand
protected void onChange () throws OpenAS2Exception
{
if (isSaveChangesToFile ())
save ();
}
@Nonnull
public PrivateKey getPrivateKey (@Nullable final X509Certificate aCert) throws OpenAS2Exception
{
final KeyStore aKeyStore = getKeyStore ();
String sAlias = null;
try
{
// This method heuristically scans the keystore and delivery the first
// result.
sAlias = aKeyStore.getCertificateAlias (aCert);
if (sAlias == null)
throw new KeyNotFoundException (aCert);
final PrivateKey aKey = (PrivateKey) aKeyStore.getKey (sAlias, getPassword ());
if (aKey == null)
throw new KeyNotFoundException (aCert, sAlias);
return aKey;
}
catch (final GeneralSecurityException ex)
{
throw new KeyNotFoundException (aCert, sAlias, ex);
}
}
@Nonnull
public PrivateKey getPrivateKey (@Nullable final IMessage aMsg,
@Nullable final X509Certificate aCert) throws OpenAS2Exception
{
return getPrivateKey (aCert);
}
@Nonnull
public PrivateKey getPrivateKey (@Nullable final IMessageMDN aMDN,
@Nullable final X509Certificate aCert) throws OpenAS2Exception
{
return getPrivateKey (aCert);
}
public void addCertificate (@Nonnull @Nonempty final String sAlias,
@Nonnull final X509Certificate aCert,
final boolean bOverwrite) throws OpenAS2Exception
{
ValueEnforcer.notEmpty (sAlias, "Alias");
ValueEnforcer.notNull (aCert, "Cert");
final KeyStore aKeyStore = getKeyStore ();
try
{
if (aKeyStore.containsAlias (sAlias) && !bOverwrite)
throw new CertificateExistsException (sAlias);
aKeyStore.setCertificateEntry (sAlias, aCert);
onChange ();
s_aLogger.info ("Added certificate alias '" + sAlias + "' of certificate '" + aCert.getSubjectDN () + "'");
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void addPrivateKey (@Nonnull @Nonempty final String sAlias,
@Nonnull final Key aKey,
@Nonnull final String sPassword) throws OpenAS2Exception
{
ValueEnforcer.notEmpty (sAlias, "Alias");
ValueEnforcer.notNull (aKey, "Key");
ValueEnforcer.notNull (sPassword, "Password");
final KeyStore aKeyStore = getKeyStore ();
try
{
if (!aKeyStore.containsAlias (sAlias))
throw new CertificateNotFoundException (null, sAlias);
final Certificate [] aCertChain = aKeyStore.getCertificateChain (sAlias);
aKeyStore.setKeyEntry (sAlias, aKey, sPassword.toCharArray (), aCertChain);
onChange ();
s_aLogger.info ("Added key alias '" + sAlias + "'");
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void clearCertificates () throws OpenAS2Exception
{
final KeyStore aKeyStore = getKeyStore ();
try
{
// Make a copy to be sure
for (final String sAlias : CollectionHelper.newList (aKeyStore.aliases ()))
aKeyStore.deleteEntry (sAlias);
onChange ();
s_aLogger.info ("Remove all aliases in key store");
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void load (@Nonnull final String sFilename, @Nonnull final char [] aPassword) throws OpenAS2Exception
{
final InputStream aFIS = FileHelper.getInputStream (sFilename);
load (aFIS, aPassword);
}
public void load (@Nonnull @WillClose final InputStream aIS, @Nonnull final char [] aPassword) throws OpenAS2Exception
{
try
{
final KeyStore aKeyStore = getKeyStore ();
synchronized (aKeyStore)
{
aKeyStore.load (aIS, aPassword);
}
}
catch (final IOException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
finally
{
StreamHelper.close (aIS);
}
}
public void load () throws OpenAS2Exception
{
load (getFilename (), getPassword ());
}
public void removeCertificate (@Nonnull final X509Certificate aCert) throws OpenAS2Exception
{
ValueEnforcer.notNull (aCert, "Cert");
final KeyStore aKeyStore = getKeyStore ();
try
{
final String sAlias = aKeyStore.getCertificateAlias (aCert);
if (sAlias == null)
throw new CertificateNotFoundException (aCert);
removeCertificate (sAlias);
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void removeCertificate (@Nullable final String sAlias) throws OpenAS2Exception
{
final KeyStore aKeyStore = getKeyStore ();
try
{
final Certificate aCert = aKeyStore.getCertificate (sAlias);
if (aCert == null)
throw new CertificateNotFoundException (null, sAlias);
aKeyStore.deleteEntry (sAlias);
onChange ();
s_aLogger.info ("Removed certificate alias '" + sAlias + "'");
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
}
public void save () throws OpenAS2Exception
{
save (getFilename (), getPassword ());
}
public void save (@Nonnull final String sFilename, @Nonnull final char [] aPassword) throws OpenAS2Exception
{
final OutputStream fOut = FileHelper.getOutputStream (sFilename, EAppend.TRUNCATE);
save (fOut, aPassword);
}
public void save (@Nonnull @WillClose final OutputStream aOS,
@Nonnull final char [] aPassword) throws OpenAS2Exception
{
try
{
final KeyStore aKeyStore = getKeyStore ();
synchronized (aKeyStore)
{
aKeyStore.store (aOS, aPassword);
}
}
catch (final IOException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
catch (final GeneralSecurityException ex)
{
throw WrappedOpenAS2Exception.wrap (ex);
}
finally
{
StreamHelper.close (aOS);
}
}
}
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