/**************************************************************
 * 
 * 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.
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 *************************************************************/



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

#include <rtl/digest.h>
#include <rtl/ref.hxx>

#include "sha1context.hxx"

using namespace ::com::sun::star;

// static
uno::Reference< xml::crypto::XDigestContext > SHA1DigestContext::Create()
{
    ::rtl::Reference< SHA1DigestContext > xResult = new SHA1DigestContext();
    xResult->m_pDigest = rtl_digest_createSHA1();
    if ( !xResult->m_pDigest )
        throw uno::RuntimeException( ::rtl::OUString::createFromAscii( "Can not create cipher!\n" ),
                                     uno::Reference< XInterface >() );

    return uno::Reference< xml::crypto::XDigestContext >( xResult.get() );
}

SHA1DigestContext::~SHA1DigestContext()
{
    if ( m_pDigest )
    {
		rtl_digest_destroySHA1( m_pDigest );
        m_pDigest = NULL;
    }
}

void SAL_CALL SHA1DigestContext::updateDigest( const uno::Sequence< ::sal_Int8 >& aData )
    throw( lang::DisposedException, uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( !m_pDigest )
        throw lang::DisposedException();

    if ( rtl_Digest_E_None != rtl_digest_updateSHA1( m_pDigest, aData.getConstArray(), aData.getLength() ) )
    {
		rtl_digest_destroySHA1( m_pDigest );
        m_pDigest = NULL;

        throw uno::RuntimeException();
    }
}

uno::Sequence< ::sal_Int8 > SAL_CALL SHA1DigestContext::finalizeDigestAndDispose()
    throw( lang::DisposedException, uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( !m_pDigest )
        throw lang::DisposedException();

    uno::Sequence< sal_Int8 > aResult( RTL_DIGEST_LENGTH_SHA1 );
    if ( rtl_Digest_E_None != rtl_digest_getSHA1( m_pDigest, reinterpret_cast< sal_uInt8* >( aResult.getArray() ), aResult.getLength() ) )
    {
		rtl_digest_destroySHA1( m_pDigest );
        m_pDigest = NULL;

        throw uno::RuntimeException();
    }

    rtl_digest_destroySHA1( m_pDigest );
    m_pDigest = NULL;

    return aResult;
}