/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF 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.
 */

/*
 * XSEC
 *
 * OpenSSLCryptoX509:= OpenSSL based class for handling X509 (V3) certificates
 *
 * Author(s): Berin Lautenbach
 *
 * $Id$
 *
 */

#ifndef OPENSSLCRYPTOX509_INCLUDE
#define OPENSSLCRYPTOX509_INCLUDE

#include <xsec/framework/XSECDefs.hpp>
#include <xsec/enc/XSECCryptoX509.hpp>

#if defined (XSEC_HAVE_OPENSSL)
#include <openssl/x509.h>
#include <openssl/bio.h>

/**
 * \brief Implementation class for interface for X509 certificates.
 * @ingroup opensslcrypto
 *
 * The library uses classes derived from this to process X509 Certificates.
 *
 */

class XSEC_EXPORT OpenSSLCryptoX509 : public XSECCryptoX509 {

public :

    /** @name Constructors and Destructors */
    //@{

    OpenSSLCryptoX509();
    virtual ~OpenSSLCryptoX509();

    //@}


    //@}
    /** @name Key Interface methods */
    //@{

    /**
     * \brief Return the type of the key stored in the certificate.
     *
     * Will extract the key from the certificate to return the appropriate
     * type
     *
     */

    virtual XSECCryptoKey::KeyType getPublicKeyType() const;

    /**
     * \brief Returns a string that identifies the crypto owner of this library.
     */

    virtual const XMLCh * getProviderName() const;

    /**
     * \brief Get a copy of the public key.
     *
     * Extracts the public key from the certificate and returns the appropriate
     * OpenSSLCryrptoKey (DSA or RSA) object
     *
     */

    virtual XSECCryptoKey * clonePublicKey() const;

    //@}

    /** @name Load and Get the certificate */
    //@{

    /**
     * \brief Load a certificate into the object.
     *
     * Take a base64 DER encoded certificate and load.
     *
     * @param buf A buffer containing the Base64 encoded certificate
     * @param len The number of bytes of data in the certificate.
     */

    virtual void loadX509Base64Bin(const char * buf, unsigned int len);

    /**
     * \brief Get a Base64 DER encoded copy of the certificate
     *
     * @returns A safeBuffer containing the DER encoded certificate
     */

    virtual safeBuffer &getDEREncodingSB(void) {return m_DERX509;}

    /**
     * \brief Get a Base64 DER encoded copy of the certificate
     *
     * @returns A safeBuffer containing the DER encoded certificate
     */

    virtual const safeBuffer &getDEREncodingSB(void) const {return m_DERX509;}

    //@}

    /** @name OpenSSL Library Specific functions */
    //@{

    /**
     * \brief OpenSSL specific constructor 
     *
     * Construct the object around an existing X509 certificate
     */

    OpenSSLCryptoX509(X509 * x);

    /**
     * \brief Get OpenSSL certificate structure
     */

    X509 * getOpenSSLX509(void) {return mp_X509;}

    /**
     * \brief Get OpenSSL certificate structure
     */

    const X509 * getOpenSSLX509(void) const {return mp_X509;}

    //@}

private:

    X509            * mp_X509;              // The X509 structure
    safeBuffer      m_DERX509;
};

#endif /* XSEC_HAVE_OPENSSL */
#endif /* OPENSSLCRYPTOX509_INCLUDE */