/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   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 .

 */

#include <sal/config.h>

#include <com/sun/star/lang/DisposedException.hpp>

#include <rtl/digest.h>

#include <rtl/ref.hxx>

#include "sha1context.hxx"

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

// static

uno::Reference<xml::crypto::XDigestContext> StarOfficeSHA1DigestContext::Create()

{

    ::rtl::Reference<StarOfficeSHA1DigestContext> xResult = new StarOfficeSHA1DigestContext();

    xResult->m_pDigest = rtl_digest_createSHA1();

    if ( !xResult->m_pDigest )

        throw uno::RuntimeException(u"Can not create cipher!"_ustr );

    return xResult;

}

StarOfficeSHA1DigestContext::~StarOfficeSHA1DigestContext()

{

    if ( m_pDigest )

    {

        rtl_digest_destroySHA1( m_pDigest );

        m_pDigest = nullptr;

    }

}

void SAL_CALL StarOfficeSHA1DigestContext::updateDigest(const uno::Sequence<::sal_Int8>& aData)

{

    std::scoped_lock 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 = nullptr;

        throw uno::RuntimeException();

    }

}

uno::Sequence<::sal_Int8> SAL_CALL StarOfficeSHA1DigestContext::finalizeDigestAndDispose()

{

    std::scoped_lock 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 = nullptr;

        throw uno::RuntimeException();

    }

    rtl_digest_destroySHA1( m_pDigest );

    m_pDigest = nullptr;

    return aResult;

}

uno::Reference<xml::crypto::XDigestContext> CorrectSHA1DigestContext::Create()

{

    return new CorrectSHA1DigestContext();

}

CorrectSHA1DigestContext::CorrectSHA1DigestContext()

{

}

CorrectSHA1DigestContext::~CorrectSHA1DigestContext()

{

}

void SAL_CALL CorrectSHA1DigestContext::updateDigest(const uno::Sequence<::sal_Int8>& rData)

{

    std::scoped_lock aGuard(m_Mutex);

    if (m_bDisposed)

        throw lang::DisposedException();

    m_Hash.update(rData.getConstArray(), rData.getLength());

}

uno::Sequence<::sal_Int8> SAL_CALL CorrectSHA1DigestContext::finalizeDigestAndDispose()

{

    std::scoped_lock aGuard(m_Mutex);

    if (m_bDisposed)

        throw lang::DisposedException();

    m_bDisposed = true;

    std::vector<unsigned char> const sha1(m_Hash.finalize());

    return uno::Sequence<sal_Int8>(reinterpret_cast<sal_Int8 const*>(sha1.data()), sha1.size());

}

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