1 files changed, 109 insertions, 0 deletions
diff --git a/package/source/zipapi/blowfishcontext.cxx b/package/source/zipapi/blowfishcontext.cxx
new file mode 100644
index 000000000..1b5ed4a14
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+++ b/package/source/zipapi/blowfishcontext.cxx
@@ -0,0 +1,109 @@
+/* -*- 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/cipher.h>
+#include <rtl/ref.hxx>
+
+#include "blowfishcontext.hxx"
+
+using namespace ::com::sun::star;
+
+// static
+uno::Reference< xml::crypto::XCipherContext > BlowfishCFB8CipherContext::Create( const uno::Sequence< sal_Int8 >& aDerivedKey, const uno::Sequence< sal_Int8 >& aInitVector, bool bEncrypt )
+{
+    ::rtl::Reference< BlowfishCFB8CipherContext > xResult = new BlowfishCFB8CipherContext();
+    xResult->m_pCipher = rtl_cipher_create( rtl_Cipher_AlgorithmBF, rtl_Cipher_ModeStream );
+    if ( !xResult->m_pCipher )
+        throw uno::RuntimeException("Can not create cipher!" );
+
+    if ( rtl_Cipher_E_None != rtl_cipher_init(
+                                xResult->m_pCipher,
+                                bEncrypt ? rtl_Cipher_DirectionEncode : rtl_Cipher_DirectionDecode,
+                                reinterpret_cast< const sal_uInt8* >( aDerivedKey.getConstArray() ),
+                                aDerivedKey.getLength(),
+                                reinterpret_cast< const sal_uInt8* >( aInitVector.getConstArray() ),
+                                aInitVector.getLength() ) )
+    {
+        throw uno::RuntimeException("Can not initialize cipher!" );
+    }
+
+    xResult->m_bEncrypt = bEncrypt;
+
+    return xResult;
+}
+
+BlowfishCFB8CipherContext::~BlowfishCFB8CipherContext()
+{
+    if ( m_pCipher )
+    {
+        rtl_cipher_destroy ( m_pCipher );
+        m_pCipher = nullptr;
+    }
+}
+
+uno::Sequence< sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::convertWithCipherContext( const uno::Sequence< ::sal_Int8 >& aData )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_pCipher )
+        throw lang::DisposedException();
+
+    uno::Sequence< sal_Int8 > aResult( aData.getLength() );
+    rtlCipherError nError = rtl_Cipher_E_None;
+
+    if ( m_bEncrypt )
+    {
+        nError = rtl_cipher_encode( m_pCipher,
+                          aData.getConstArray(),
+                          aData.getLength(),
+                          reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
+                          aResult.getLength() );
+    }
+    else
+    {
+        nError = rtl_cipher_decode( m_pCipher,
+                          aData.getConstArray(),
+                          aData.getLength(),
+                          reinterpret_cast< sal_uInt8* >( aResult.getArray() ),
+                          aResult.getLength() );
+    }
+
+    if ( rtl_Cipher_E_None != nError )
+    {
+        throw uno::RuntimeException("Can not decrypt/encrypt with cipher!" );
+    }
+
+    return aResult;
+}
+
+uno::Sequence< ::sal_Int8 > SAL_CALL BlowfishCFB8CipherContext::finalizeCipherContextAndDispose()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_pCipher )
+        throw lang::DisposedException();
+
+    rtl_cipher_destroy ( m_pCipher );
+    m_pCipher = nullptr;
+
+    return uno::Sequence< sal_Int8 >();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */