/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: xmlsecuritycontext_nssimpl.cxx,v $
 *
 *  $Revision: 1.5 $
 *
 *  last change: $Author: obo $ $Date: 2006-09-16 14:46:38 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_xmlsecurity.hxx"

#ifndef _SAL_CONFIG_H_
#include <sal/config.h>
#endif

#ifndef _RTL_UUID_H_
#include <rtl/uuid.h>
#endif

#ifndef _XSECURITYENVIRONMENT_NSSIMPL_HXX_
#include "securityenvironment_nssimpl.hxx"
#endif

#ifndef _XMLSECURITYCONTEXT_NSSIMPL_HXX_
#include "xmlsecuritycontext_nssimpl.hxx"
#endif

#ifndef _XMLSTREAMIO_XMLSECIMPL_HXX_
#include "xmlstreamio.hxx"
#endif

#include "xmlsec/xmlsec.h"
#include "xmlsec/keysmngr.h"
#include "xmlsec/crypto.h"

using namespace ::com::sun::star::uno ;
using namespace ::com::sun::star::lang ;
using ::com::sun::star::lang::XMultiServiceFactory ;
using ::com::sun::star::lang::XSingleServiceFactory ;
using ::rtl::OUString ;

using ::com::sun::star::xml::crypto::XSecurityEnvironment ;
using ::com::sun::star::xml::crypto::XXMLSecurityContext ;

XMLSecurityContext_NssImpl :: XMLSecurityContext_NssImpl( const Reference< XMultiServiceFactory >& aFactory )
    ://i39448 : m_pKeysMngr( NULL ) ,
    m_nDefaultEnvIndex(-1) ,
    m_xServiceManager( aFactory )//,
    //m_xSecurityEnvironment( NULL )
{
    //Init xmlsec library
    if( xmlSecInit() < 0 ) {
        throw RuntimeException() ;
    }

    //Init xmlsec crypto engine library
    if( xmlSecCryptoInit() < 0 ) {
        xmlSecShutdown() ;
        throw RuntimeException() ;
    }

    //Enable external stream handlers
    if( xmlEnableStreamInputCallbacks() < 0 ) {
        xmlSecCryptoShutdown() ;
        xmlSecShutdown() ;
        throw RuntimeException() ;
    }
}

XMLSecurityContext_NssImpl :: ~XMLSecurityContext_NssImpl() {
#if 0 //i39448
    if( m_pKeysMngr != NULL ) {
        xmlSecKeysMngrDestroy( m_pKeysMngr ) ;
    }
#endif

    xmlDisableStreamInputCallbacks() ;
    xmlSecCryptoShutdown() ;
    xmlSecShutdown() ;
}

//i39448 : new methods
sal_Int32 SAL_CALL XMLSecurityContext_NssImpl::addSecurityEnvironment(
    const ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XSecurityEnvironment >& aSecurityEnvironment)
    throw (::com::sun::star::security::SecurityInfrastructureException, ::com::sun::star::uno::RuntimeException)
{
    if( !aSecurityEnvironment.is() )
    {
        throw RuntimeException() ;
    }

    m_vSecurityEnvironments.push_back( aSecurityEnvironment );

    return m_vSecurityEnvironments.size() - 1 ;
}


sal_Int32 SAL_CALL XMLSecurityContext_NssImpl::getSecurityEnvironmentNumber(  )
    throw (::com::sun::star::uno::RuntimeException)
{
    return m_vSecurityEnvironments.size();
}

::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XSecurityEnvironment > SAL_CALL
    XMLSecurityContext_NssImpl::getSecurityEnvironmentByIndex( sal_Int32 index )
    throw (::com::sun::star::uno::RuntimeException)
{
    ::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XSecurityEnvironment > xSecurityEnvironment;

    if (index >= 0 && index < ( sal_Int32 )m_vSecurityEnvironments.size())
    {
        xSecurityEnvironment = m_vSecurityEnvironments[index];
    }
    else
        throw RuntimeException() ;

    return xSecurityEnvironment;
}

::com::sun::star::uno::Reference< ::com::sun::star::xml::crypto::XSecurityEnvironment > SAL_CALL
    XMLSecurityContext_NssImpl::getSecurityEnvironment(  )
    throw (::com::sun::star::uno::RuntimeException)
{
    if (m_nDefaultEnvIndex >= 0 && m_nDefaultEnvIndex < ( sal_Int32 )m_vSecurityEnvironments.size())
        return getSecurityEnvironmentByIndex(m_nDefaultEnvIndex);
    else
        throw RuntimeException() ;
}

sal_Int32 SAL_CALL XMLSecurityContext_NssImpl::getDefaultSecurityEnvironmentIndex(  )
    throw (::com::sun::star::uno::RuntimeException)
{
    return m_nDefaultEnvIndex ;
}

void SAL_CALL XMLSecurityContext_NssImpl::setDefaultSecurityEnvironmentIndex( sal_Int32 nDefaultEnvIndex )
    throw (::com::sun::star::uno::RuntimeException)
{
    m_nDefaultEnvIndex = nDefaultEnvIndex;
}

#if 0 //i39448 : old methods should be deleted
/* XXMLSecurityContext */
void SAL_CALL XMLSecurityContext_NssImpl :: setSecurityEnvironment( const Reference< XSecurityEnvironment >& aSecurityEnvironment ) throw( com::sun::star::security::SecurityInfrastructureException ) {
    PK11SlotInfo* slot ;
    CERTCertDBHandle* handler ;
    //xmlSecKeyPtr key ;
    //xmlSecKeyDataPtr keyData ;
    PK11SymKey* symKey ;
    SECKEYPublicKey* pubKey ;
    SECKEYPrivateKey* priKey ;
    unsigned int i ;

    if( !aSecurityEnvironment.is() )
        throw RuntimeException() ;

    m_xSecurityEnvironment = aSecurityEnvironment ;

    //Clear key manager
    if( m_pKeysMngr != NULL ) {
        xmlSecKeysMngrDestroy( m_pKeysMngr ) ;
        m_pKeysMngr = NULL ;
    }

    //Create key manager
    Reference< XUnoTunnel > xEnvTunnel( m_xSecurityEnvironment , UNO_QUERY ) ;
    if( !xEnvTunnel.is() ) {
        throw RuntimeException() ;^1
    }

    SecurityEnvironment_NssImpl* pSecEnv = ( SecurityEnvironment_NssImpl* )xEnvTunnel->getSomething( SecurityEnvironment_NssImpl::getUnoTunnelId() ) ;
    if( pSecEnv == NULL )
        throw RuntimeException() ;

    //todo
//  slot = pSecEnv->getCryptoSlot() ;
    handler = pSecEnv->getCertDb() ;

    /*-
     * The following lines is based on the private version of xmlSec-NSS
     * crypto engine
     */
    m_pKeysMngr = xmlSecNssAppliedKeysMngrCreate( slot , handler ) ;
    if( m_pKeysMngr == NULL )
        throw RuntimeException() ;

    /*-
     * Adopt symmetric key into keys manager
     */
    for( i = 0 ; ( symKey = pSecEnv->getSymKey( i ) ) != NULL ; i ++ ) {
        if( xmlSecNssAppliedKeysMngrSymKeyLoad( m_pKeysMngr, symKey ) < 0 ) {
            throw RuntimeException() ;
        }
    }

    /*-
     * Adopt asymmetric public key into keys manager
     */
    for( i = 0 ; ( pubKey = pSecEnv->getPubKey( i ) ) != NULL ; i ++ ) {
        if( xmlSecNssAppliedKeysMngrPubKeyLoad( m_pKeysMngr, pubKey ) < 0 ) {
            throw RuntimeException() ;
        }
    }

    /*-
     * Adopt asymmetric private key into keys manager
     */
    for( i = 0 ; ( priKey = pSecEnv->getPriKey( i ) ) != NULL ; i ++ ) {
        if( xmlSecNssAppliedKeysMngrPriKeyLoad( m_pKeysMngr, priKey ) < 0 ) {
            throw RuntimeException() ;
        }
    }
}

/* XXMLSecurityContext */
Reference< XSecurityEnvironment > SAL_CALL XMLSecurityContext_NssImpl :: getSecurityEnvironment()
    throw (RuntimeException)
{
    return  m_xSecurityEnvironment ;
}
#endif


/* XInitialization */
void SAL_CALL XMLSecurityContext_NssImpl :: initialize( const Sequence< Any >& aArguments ) throw( Exception, RuntimeException ) {
    // TBD
} ;

/* XServiceInfo */
OUString SAL_CALL XMLSecurityContext_NssImpl :: getImplementationName() throw( RuntimeException ) {
    return impl_getImplementationName() ;
}

/* XServiceInfo */
sal_Bool SAL_CALL XMLSecurityContext_NssImpl :: supportsService( const OUString& serviceName) throw( RuntimeException ) {
    Sequence< OUString > seqServiceNames = getSupportedServiceNames() ;
    const OUString* pArray = seqServiceNames.getConstArray() ;
    for( sal_Int32 i = 0 ; i < seqServiceNames.getLength() ; i ++ ) {
        if( *( pArray + i ) == serviceName )
            return sal_True ;
    }
    return sal_False ;
}

/* XServiceInfo */
Sequence< OUString > SAL_CALL XMLSecurityContext_NssImpl :: getSupportedServiceNames() throw( RuntimeException ) {
    return impl_getSupportedServiceNames() ;
}

//Helper for XServiceInfo
Sequence< OUString > XMLSecurityContext_NssImpl :: impl_getSupportedServiceNames() {
    ::osl::Guard< ::osl::Mutex > aGuard( ::osl::Mutex::getGlobalMutex() ) ;
    Sequence< OUString > seqServiceNames( 1 ) ;
    seqServiceNames.getArray()[0] = OUString::createFromAscii( "com.sun.star.xml.crypto.XMLSecurityContext" ) ;
    return seqServiceNames ;
}

OUString XMLSecurityContext_NssImpl :: impl_getImplementationName() throw( RuntimeException ) {
    return OUString::createFromAscii( "com.sun.star.xml.security.bridge.xmlsec.XMLSecurityContext_NssImpl" ) ;
}

//Helper for registry
Reference< XInterface > SAL_CALL XMLSecurityContext_NssImpl :: impl_createInstance( const Reference< XMultiServiceFactory >& aServiceManager ) throw( RuntimeException ) {
    return Reference< XInterface >( *new XMLSecurityContext_NssImpl( aServiceManager ) ) ;
}

Reference< XSingleServiceFactory > XMLSecurityContext_NssImpl :: impl_createFactory( const Reference< XMultiServiceFactory >& aServiceManager ) {
    //Reference< XSingleServiceFactory > xFactory ;
    //xFactory = ::cppu::createSingleFactory( aServiceManager , impl_getImplementationName , impl_createInstance , impl_getSupportedServiceNames ) ;
    //return xFactory ;
    return ::cppu::createSingleFactory( aServiceManager , impl_getImplementationName() , impl_createInstance , impl_getSupportedServiceNames() ) ;
}

#if 0 //not useful any longer
/* XUnoTunnel */
sal_Int64 SAL_CALL XMLSecurityContext_NssImpl :: getSomething( const Sequence< sal_Int8 >& aIdentifier )
throw (RuntimeException)
{
    if( aIdentifier.getLength() == 16 && 0 == rtl_compareMemory( getUnoTunnelId().getConstArray(), aIdentifier.getConstArray(), 16 ) ) {
        return ( sal_Int64 )this ;
    }
    return 0 ;
}

/* XUnoTunnel extension */
const Sequence< sal_Int8>& XMLSecurityContext_NssImpl :: getUnoTunnelId() {
    static Sequence< sal_Int8 >* pSeq = 0 ;
    if( !pSeq ) {
        ::osl::Guard< ::osl::Mutex > aGuard( ::osl::Mutex::getGlobalMutex() ) ;
        if( !pSeq ) {
            static Sequence< sal_Int8> aSeq( 16 ) ;
            rtl_createUuid( ( sal_uInt8* )aSeq.getArray() , 0 , sal_True ) ;
            pSeq = &aSeq ;
        }
    }
    return *pSeq ;
}

/* XUnoTunnel extension */
XMLSecurityContext_NssImpl* XMLSecurityContext_NssImpl :: getImplementation( const Reference< XInterface > xObj ) {
    Reference< XUnoTunnel > xUT( xObj , UNO_QUERY ) ;
    if( xUT.is() ) {
        return ( XMLSecurityContext_NssImpl* )xUT->getSomething( getUnoTunnelId() ) ;
    } else
        return NULL ;
}

/* Native methods */
xmlSecKeysMngrPtr XMLSecurityContext_NssImpl :: keysManager() throw( Exception, RuntimeException ) {
    return m_pKeysMngr ;
}

#endif
