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


#ifndef __nssrenam_h_
#define CERT_DecodeDERCertificate __CERT_DecodeDERCertificate
#endif  /* __nssrenam_h_ */

#include "nspr.h"
#include "nss.h"
#include "secder.h"

//MM : added by MM
#include "hasht.h"
#include "secoid.h"
#include "pk11func.h"
//MM : end



#include <sal/config.h>
#include <rtl/uuid.h>
#include "x509certificate_nssimpl.hxx"

#ifndef _CERTIFICATEEXTENSION_NSSIMPL_HXX_
#include "certificateextension_xmlsecimpl.hxx"
#endif

#ifndef _SANEXTENSION_NSSIMPL_HXX_
#include "sanextension_nssimpl.hxx"
#endif

using namespace ::com::sun::star::uno ;
using namespace ::com::sun::star::security ;
using ::rtl::OUString ;

using ::com::sun::star::security::XCertificate ;
using ::com::sun::star::util::DateTime ;

X509Certificate_NssImpl :: X509Certificate_NssImpl() :
	m_pCert( NULL )
{
}

X509Certificate_NssImpl :: ~X509Certificate_NssImpl() {
	if( m_pCert != NULL ) {
		CERT_DestroyCertificate( m_pCert ) ;
	}
}

//Methods from XCertificate
sal_Int16 SAL_CALL X509Certificate_NssImpl :: getVersion() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL ) {
		if( m_pCert->version.len > 0 ) {
			return ( char )*( m_pCert->version.data ) ;
		} else 
			return 0 ;
	} else {
		return -1 ;
	}
}

::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl :: getSerialNumber() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->serialNumber.len > 0 ) {
		Sequence< sal_Int8 > serial( m_pCert->serialNumber.len ) ;
		for( unsigned int i = 0 ; i < m_pCert->serialNumber.len ; i ++ )
			serial[i] = *( m_pCert->serialNumber.data + i ) ;

		return serial ;
	} else {
		return ::com::sun::star::uno::Sequence< sal_Int8 >();
	}
}

::rtl::OUString SAL_CALL X509Certificate_NssImpl :: getIssuerName() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL ) {
		return OUString(m_pCert->issuerName , PL_strlen(m_pCert->issuerName) , RTL_TEXTENCODING_UTF8) ;
	} else {
		return OUString() ;
	}
}

::rtl::OUString SAL_CALL X509Certificate_NssImpl :: getSubjectName() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL ) {
		return OUString(m_pCert->subjectName , PL_strlen(m_pCert->subjectName) , RTL_TEXTENCODING_UTF8);
	} else {
		return OUString() ;
	}
}

::com::sun::star::util::DateTime SAL_CALL X509Certificate_NssImpl :: getNotValidBefore() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL ) {
		SECStatus rv ;
		PRTime notBefore ;
		PRExplodedTime explTime ;
		DateTime dateTime ;

		rv = DER_DecodeTimeChoice( &notBefore, &m_pCert->validity.notBefore ) ;
		if( rv ) {
			return DateTime() ;
		}

		//Convert the time to readable local time
		PR_ExplodeTime( notBefore, PR_LocalTimeParameters, &explTime ) ;

		dateTime.HundredthSeconds = static_cast< sal_Int16 >( explTime.tm_usec / 1000  );
		dateTime.Seconds = static_cast< sal_Int16 >( explTime.tm_sec  );
		dateTime.Minutes = static_cast< sal_Int16 >( explTime.tm_min  );
		dateTime.Hours = static_cast< sal_Int16 >( explTime.tm_hour  );
		dateTime.Day = static_cast< sal_Int16 >( explTime.tm_mday  );
		dateTime.Month = static_cast< sal_Int16 >( explTime.tm_month+1  );
		dateTime.Year = static_cast< sal_Int16 >( explTime.tm_year  );

		return dateTime ;
	} else {
		return DateTime() ;
	}
}

::com::sun::star::util::DateTime SAL_CALL X509Certificate_NssImpl :: getNotValidAfter() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL ) {
		SECStatus rv ;
		PRTime notAfter ;
		PRExplodedTime explTime ;
		DateTime dateTime ;

		rv = DER_DecodeTimeChoice( &notAfter, &m_pCert->validity.notAfter ) ;
		if( rv ) {
			return DateTime() ;
		}

		//Convert the time to readable local time
		PR_ExplodeTime( notAfter, PR_LocalTimeParameters, &explTime ) ;

		dateTime.HundredthSeconds = static_cast< sal_Int16 >( explTime.tm_usec / 1000  );
		dateTime.Seconds = static_cast< sal_Int16 >( explTime.tm_sec  );
		dateTime.Minutes = static_cast< sal_Int16 >( explTime.tm_min  );
		dateTime.Hours = static_cast< sal_Int16 >( explTime.tm_hour  );
		dateTime.Day = static_cast< sal_Int16 >( explTime.tm_mday  );
		dateTime.Month = static_cast< sal_Int16 >( explTime.tm_month+1  );
		dateTime.Year = static_cast< sal_Int16 >( explTime.tm_year  );

		return dateTime ;
	} else {
		return DateTime() ;
	}
}

::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl :: getIssuerUniqueID() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->issuerID.len > 0 ) {
		Sequence< sal_Int8 > issuerUid( m_pCert->issuerID.len ) ;
		for( unsigned int i = 0 ; i < m_pCert->issuerID.len ; i ++ )
			issuerUid[i] = *( m_pCert->issuerID.data + i ) ;

		return issuerUid ;
	} else {
		return ::com::sun::star::uno::Sequence< sal_Int8 >();
	}
}

::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl :: getSubjectUniqueID() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->subjectID.len > 0 ) {
		Sequence< sal_Int8 > subjectUid( m_pCert->subjectID.len ) ;
		for( unsigned int i = 0 ; i < m_pCert->subjectID.len ; i ++ )
			subjectUid[i] = *( m_pCert->subjectID.data + i ) ;

		return subjectUid ;
	} else {
		return ::com::sun::star::uno::Sequence< sal_Int8 >();
	}
}

::com::sun::star::uno::Sequence< ::com::sun::star::uno::Reference< ::com::sun::star::security::XCertificateExtension > > SAL_CALL X509Certificate_NssImpl :: getExtensions() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->extensions != NULL ) {
		CERTCertExtension** extns ;
		CertificateExtension_XmlSecImpl* pExtn ;
		sal_Bool crit ;
		int len ;

		for( len = 0, extns = m_pCert->extensions; *extns != NULL; len ++, extns ++ ) ;
		Sequence< Reference< XCertificateExtension > > xExtns( len ) ;

		for( extns = m_pCert->extensions, len = 0; *extns != NULL; extns ++, len ++ ) {
            const SECItem id = (*extns)->id;
            ::rtl::OString oidString(CERT_GetOidString(&id));
            
            // remove "OID." prefix if existing
            ::rtl::OString objID;
            ::rtl::OString oid("OID.");
            if (oidString.match(oid))
                objID = oidString.copy(oid.getLength());
            else
                objID = oidString;

            if ( objID.equals("2.5.29.17") )
                pExtn = (CertificateExtension_XmlSecImpl*) new SanExtensionImpl() ;
            else 
			    pExtn = new CertificateExtension_XmlSecImpl() ;

			if( (*extns)->critical.data == NULL )
				crit = sal_False ;
			else
				crit = ( (*extns)->critical.data[0] == 0xFF ) ? sal_True : sal_False ;
			pExtn->setCertExtn( (*extns)->value.data, (*extns)->value.len, (unsigned char*)objID.getStr(), objID.getLength(), crit ) ;

			xExtns[len] = pExtn ;
		}

		return xExtns ;
	} else {
		return ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Reference< ::com::sun::star::security::XCertificateExtension > > ();
	}
}

::com::sun::star::uno::Reference< ::com::sun::star::security::XCertificateExtension > SAL_CALL X509Certificate_NssImpl :: findCertificateExtension( const ::com::sun::star::uno::Sequence< sal_Int8 >& oid ) throw (::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->extensions != NULL ) {
		CertificateExtension_XmlSecImpl* pExtn ;
		CERTCertExtension** extns ;
		SECItem idItem ;
		sal_Bool crit ;

		idItem.data = ( unsigned char* )&oid[0] ;
		idItem.len = oid.getLength() ;

		pExtn = NULL ;
		for( extns = m_pCert->extensions; *extns != NULL; extns ++ ) {
			if( SECITEM_CompareItem( &idItem, &(*extns)->id ) == SECEqual ) {
				const SECItem id = (*extns)->id;
                ::rtl::OString objId(CERT_GetOidString(&id));
                if ( objId.equals("OID.2.5.29.17") )
                    pExtn = (CertificateExtension_XmlSecImpl*) new SanExtensionImpl() ;
                else 
			        pExtn = new CertificateExtension_XmlSecImpl() ;
				if( (*extns)->critical.data == NULL )
					crit = sal_False ;
				else
					crit = ( (*extns)->critical.data[0] == 0xFF ) ? sal_True : sal_False ;
				pExtn->setCertExtn( (*extns)->value.data, (*extns)->value.len, (*extns)->id.data, (*extns)->id.len, crit ) ;
			}
		}

		return pExtn ;
	} else {
		return NULL ;
	}
}


::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl :: getEncoded() throw ( ::com::sun::star::uno::RuntimeException) {
	if( m_pCert != NULL && m_pCert->derCert.len > 0 ) {
		Sequence< sal_Int8 > rawCert( m_pCert->derCert.len ) ;

		for( unsigned int i = 0 ; i < m_pCert->derCert.len ; i ++ )
			rawCert[i] = *( m_pCert->derCert.data + i ) ;

		return rawCert ;
	} else {
		return ::com::sun::star::uno::Sequence< sal_Int8 >();
	}
}

//Helper methods
void X509Certificate_NssImpl :: setCert( CERTCertificate* cert ) {
	if( m_pCert != NULL ) {
		CERT_DestroyCertificate( m_pCert ) ;
		m_pCert = NULL ;
	}

	if( cert != NULL ) {
		m_pCert = CERT_DupCertificate( cert ) ;
	}
}

const CERTCertificate* X509Certificate_NssImpl :: getNssCert() const {
	if( m_pCert != NULL ) {
		return m_pCert ;
	} else {
		return NULL ;
	}
}

void X509Certificate_NssImpl :: setRawCert( Sequence< sal_Int8 > rawCert ) throw ( ::com::sun::star::uno::RuntimeException) {
	CERTCertificate* cert ;
	SECItem certItem ;

	certItem.data = ( unsigned char* )&rawCert[0] ;
	certItem.len = rawCert.getLength() ;

	cert = CERT_DecodeDERCertificate( &certItem, PR_TRUE, NULL ) ;
	if( cert == NULL )
		throw RuntimeException() ;

	if( m_pCert != NULL ) {
		CERT_DestroyCertificate( m_pCert ) ;
		m_pCert = NULL ;
	}

	m_pCert = cert ;
}

/* XUnoTunnel */
sal_Int64 SAL_CALL X509Certificate_NssImpl :: getSomething( const Sequence< sal_Int8 >& aIdentifier ) throw( RuntimeException ) {
	if( aIdentifier.getLength() == 16 && 0 == rtl_compareMemory( getUnoTunnelId().getConstArray(), aIdentifier.getConstArray(), 16 ) ) { 
		return sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_uIntPtr>(this));
	}
	return 0 ;
}

/* XUnoTunnel extension */
const Sequence< sal_Int8>& X509Certificate_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 */
X509Certificate_NssImpl* X509Certificate_NssImpl :: getImplementation( const Reference< XInterface > xObj ) {
	Reference< XUnoTunnel > xUT( xObj , UNO_QUERY ) ;
	if( xUT.is() ) {
		return reinterpret_cast<X509Certificate_NssImpl*>(
            sal::static_int_cast<sal_uIntPtr>(xUT->getSomething( getUnoTunnelId() )));
	} else
		return NULL ;
}

// MM : added by MM
::rtl::OUString getAlgorithmDescription(SECAlgorithmID *aid)
{
	SECOidTag tag;
	tag = SECOID_GetAlgorithmTag(aid);

	const char *pDesc = SECOID_FindOIDTagDescription(tag);

	return rtl::OUString::createFromAscii( pDesc ) ;
}

::com::sun::star::uno::Sequence< sal_Int8 > getThumbprint(CERTCertificate *pCert, SECOidTag id)
{
	if( pCert != NULL )
	{
		unsigned char fingerprint[20];
		//char *fpStr = NULL;
		SECItem fpItem;
		int length = ((id == SEC_OID_MD5)?MD5_LENGTH:SHA1_LENGTH);
		
		memset(fingerprint, 0, sizeof fingerprint);
		PK11_HashBuf(id, fingerprint, pCert->derCert.data, pCert->derCert.len);
		fpItem.data = fingerprint;
		fpItem.len = length;
		//fpStr = CERT_Hexify(&fpItem, 1);
	
		Sequence< sal_Int8 > thumbprint( length ) ;
		for( int i = 0 ; i < length ; i ++ )
		{
			thumbprint[i] = fingerprint[i];
		}
		
		//PORT_Free(fpStr);
		return thumbprint;
	}
	else
	{
		return ::com::sun::star::uno::Sequence< sal_Int8 >();
	}
}

::rtl::OUString SAL_CALL X509Certificate_NssImpl::getSubjectPublicKeyAlgorithm()
	throw ( ::com::sun::star::uno::RuntimeException)
{
	if( m_pCert != NULL )
	{
		return getAlgorithmDescription(&(m_pCert->subjectPublicKeyInfo.algorithm));
	}
	else
	{
		return OUString() ;
	}
}

::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl::getSubjectPublicKeyValue()
	throw ( ::com::sun::star::uno::RuntimeException)
{
	if( m_pCert != NULL ) 
	{
		SECItem spk = m_pCert->subjectPublicKeyInfo.subjectPublicKey;
		DER_ConvertBitString(&spk);
    
		if ( spk.len>0)
		{
			Sequence< sal_Int8 > key( spk.len ) ;
			for( unsigned int i = 0 ; i < spk.len ; i ++ )
			{
				key[i] = *( spk.data + i ) ;
			}
	
			return key ;
		}
	}
	
	return ::com::sun::star::uno::Sequence< sal_Int8 >();
}
	
::rtl::OUString SAL_CALL X509Certificate_NssImpl::getSignatureAlgorithm()
	throw ( ::com::sun::star::uno::RuntimeException)
{
	if( m_pCert != NULL )
	{
		return getAlgorithmDescription(&(m_pCert->signature));
	}
	else
	{
		return OUString() ;
	}
}
	
::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl::getSHA1Thumbprint()
	throw ( ::com::sun::star::uno::RuntimeException)
{
	return getThumbprint(m_pCert, SEC_OID_SHA1);
}

::com::sun::star::uno::Sequence< sal_Int8 > SAL_CALL X509Certificate_NssImpl::getMD5Thumbprint()
	throw ( ::com::sun::star::uno::RuntimeException)
{
	return getThumbprint(m_pCert, SEC_OID_MD5);
}

sal_Int32 SAL_CALL X509Certificate_NssImpl::getCertificateUsage(  )
	throw ( ::com::sun::star::uno::RuntimeException)
{
	SECStatus rv;
	SECItem tmpitem;
	sal_Int32 usage;
	
	rv = CERT_FindKeyUsageExtension(m_pCert, &tmpitem);
	if ( rv == SECSuccess ) 
	{
		usage = tmpitem.data[0];
		PORT_Free(tmpitem.data);
		tmpitem.data = NULL;
	}
	else
	{
		usage = KU_ALL;
	}
	
	/*
	 * to make the nss implementation compatible with MSCrypto,
	 * the following usage is ignored
	 *
	 *
	if ( CERT_GovtApprovedBitSet(m_pCert) ) 
	{
		usage |= KU_NS_GOVT_APPROVED;
	}
	*/
	
	return usage;
}

// MM : end