xmlsecurity/source/framework/encryptorimpl.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "encryptorimpl.hxx"
  22 #include <com/sun/star/xml/crypto/XXMLEncryptionTemplate.hpp>
  23 #include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
  24 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
  25 #include <comphelper/processfactory.hxx>
  26 #include <cppuhelper/supportsservice.hxx>
  27 #include <osl/diagnose.h>
  28
  29 using namespace com::sun::star::uno;
  30 namespace cssl = com::sun::star::lang;
  31 namespace cssxc = com::sun::star::xml::crypto;
  32 namespace cssxw = com::sun::star::xml::wrapper;
  33
  34 #define IMPLEMENTATION_NAME "com.sun.star.xml.security.framework.EncryptorImpl"
  35
  36 EncryptorImpl::EncryptorImpl(const Reference<XComponentContext> & xContext) : EncryptorImpl_Base(xContext)
  37 {
  38     m_nReferenceId = -1;
  39 }
  40
  41 EncryptorImpl::~EncryptorImpl()
  42 {
  43 }
  44
  45 bool EncryptorImpl::checkReady() const
  46 /****** EncryptorImpl/checkReady *********************************************
  47  *
  48  *   NAME
  49  *  checkReady -- checks the conditions for the encryption.
  50  *
  51  *   SYNOPSIS
  52  *  bReady = checkReady( );
  53  *
  54  *   FUNCTION
  55  *  checks whether all following conditions are satisfied:
  56  *  1. the result listener is ready;
  57  *  2. the EncryptionEngine is ready.
  58  *
  59  *   INPUTS
  60  *  empty
  61  *
  62  *   RESULT
  63  *  bReady - true if all conditions are satisfied, false otherwise
  64  *
  65  *   AUTHOR
  66  *  Michael Mi
  67  *  Email: michael.mi@sun.com
  68  ******************************************************************************/
  69 {
  70     sal_Int32 nKeyInc = 0;
  71     if (m_nIdOfKeyEC != 0)
  72     {
  73         nKeyInc = 1;
  74     }
  75
  76     return (m_xResultListener.is() &&
  77         (m_nReferenceId != -1) &&
  78         (2+nKeyInc == m_nNumOfResolvedReferences) &&
  79         EncryptionEngine::checkReady());
  80 }
  81
  82 void EncryptorImpl::notifyResultListener() const
  83     throw (Exception, RuntimeException)
  84 /****** DecryptorImpl/notifyResultListener ***********************************
  85  *
  86  *   NAME
  87  *  notifyResultListener -- notifies the listener about the encryption
  88  *  result.
  89  *
  90  *   SYNOPSIS
  91  *  notifyResultListener( );
  92  *
  93  *   FUNCTION
  94  *  see NAME.
  95  *
  96  *   INPUTS
  97  *  empty
  98  *
  99  *   RESULT
 100  *  empty
 101  *
 102  *   AUTHOR
 103  *  Michael Mi
 104  *  Email: michael.mi@sun.com
 105  ******************************************************************************/
 106 {
 107     Reference< cssxc::sax::XEncryptionResultListener >
 108         xEncryptionResultListener ( m_xResultListener , UNO_QUERY ) ;
 109
 110     xEncryptionResultListener->encrypted( m_nSecurityId, m_nStatus );
 111 }
 112
 113 void EncryptorImpl::startEngine( const Reference<
 114     cssxc::XXMLEncryptionTemplate >&
 115     xEncryptionTemplate)
 116         throw (Exception, RuntimeException)
 117 /****** EncryptorImpl/startEngine ********************************************
 118  *
 119  *   NAME
 120  *  startEngine -- generates the encryption.
 121  *
 122  *   SYNOPSIS
 123  *  startEngine( xEncryptionTemplate );
 124  *
 125  *   FUNCTION
 126  *  generates the encryption element, then if succeeds, updates the link
 127  *  of old template element to the new encryption element in
 128  *  SAXEventKeeper.
 129  *
 130  *   INPUTS
 131  *  xEncryptionTemplate - the encryption template to be encrypted.
 132  *
 133  *   RESULT
 134  *  empty
 135  *
 136  *   AUTHOR
 137  *  Michael Mi
 138  *  Email: michael.mi@sun.com
 139  ******************************************************************************/
 140 {
 141     Reference < cssxc::XXMLEncryptionTemplate > xResultTemplate;
 142
 143     Reference< cssxw::XXMLElementWrapper >
 144         xXMLElement = m_xSAXEventKeeper->getElement( m_nReferenceId );
 145     xEncryptionTemplate->setTarget(xXMLElement);
 146
 147     try
 148     {
 149         xResultTemplate = m_xXMLEncryption->encrypt(
 150             xEncryptionTemplate, m_xSecurityEnvironment);
 151         m_nStatus = xResultTemplate->getStatus();
 152     }
 153     catch( Exception& )
 154     {
 155         m_nStatus = cssxc::SecurityOperationStatus_RUNTIMEERROR_FAILED;
 156     }
 157
 158     if (m_nStatus == cssxc::SecurityOperationStatus_OPERATION_SUCCEEDED)
 159     {
 160         Reference < cssxw::XXMLElementWrapper > xResultEncryption
 161             = xResultTemplate->getTemplate();
 162         m_xSAXEventKeeper->setElement(m_nIdOfTemplateEC, xResultEncryption);
 163         m_xSAXEventKeeper->setElement(m_nReferenceId, NULL);
 164     }
 165 }
 166
 167 /* XReferenceCollector */
 168 void SAL_CALL EncryptorImpl::setReferenceCount(sal_Int32)
 169     throw (Exception, RuntimeException, std::exception)
 170 {
 171     /*
 172      * dummp method, because there is only one reference in
 173      * encryption, different from signature.
 174      * so the referenceNumber is always 1
 175      */
 176 }
 177
 178 void SAL_CALL EncryptorImpl::setReferenceId( sal_Int32 id )
 179     throw (Exception, RuntimeException, std::exception)
 180 {
 181     m_nReferenceId = id;
 182 }
 183
 184 /* XEncryptionResultBroadcaster */
 185 void SAL_CALL EncryptorImpl::addEncryptionResultListener( const Reference< cssxc::sax::XEncryptionResultListener >& listener )
 186         throw (Exception, RuntimeException, std::exception)
 187 {
 188     m_xResultListener = listener;
 189     tryToPerform();
 190 }
 191
 192 void SAL_CALL EncryptorImpl::removeEncryptionResultListener( const Reference< cssxc::sax::XEncryptionResultListener >&)
 193         throw (RuntimeException, std::exception)
 194 {
 195 }
 196
 197 /* XInitialization */
 198 void SAL_CALL EncryptorImpl::initialize( const Sequence< Any >& aArguments )
 199     throw (Exception, RuntimeException, std::exception)
 200 {
 201     OSL_ASSERT(aArguments.getLength() == 5);
 202
 203     OUString ouTempString;
 204
 205     aArguments[0] >>= ouTempString;
 206     m_nSecurityId = ouTempString.toInt32();
 207     aArguments[1] >>= m_xSAXEventKeeper;
 208     aArguments[2] >>= ouTempString;
 209     m_nIdOfTemplateEC = ouTempString.toInt32();
 210     aArguments[3] >>= m_xSecurityEnvironment;
 211     aArguments[4] >>= m_xXMLEncryption;
 212 }
 213
 214
 215 OUString EncryptorImpl_getImplementationName ()
 216     throw (RuntimeException)
 217 {
 218     return OUString ( IMPLEMENTATION_NAME );
 219 }
 220
 221 Sequence< OUString > SAL_CALL EncryptorImpl_getSupportedServiceNames(  )
 222     throw (RuntimeException)
 223 {
 224     Sequence < OUString > aRet(1);
 225     OUString* pArray = aRet.getArray();
 226     pArray[0] = "com.sun.star.xml.crypto.sax.Encryptor";
 227     return aRet;
 228 }
 229
 230 Reference< XInterface > SAL_CALL EncryptorImpl_createInstance(
 231     const Reference< cssl::XMultiServiceFactory >& xMSF)
 232     throw( Exception )
 233 {
 234     return (cppu::OWeakObject*) new EncryptorImpl( comphelper::getComponentContext( xMSF ) );
 235 }
 236
 237 /* XServiceInfo */
 238 OUString SAL_CALL EncryptorImpl::getImplementationName(  )
 239     throw (RuntimeException, std::exception)
 240 {
 241     return EncryptorImpl_getImplementationName();
 242 }
 243
 244 sal_Bool SAL_CALL EncryptorImpl::supportsService( const OUString& rServiceName )
 245     throw (RuntimeException, std::exception)
 246 {
 247     return cppu::supportsService(this, rServiceName);
 248 }
 249
 250 Sequence< OUString > SAL_CALL EncryptorImpl::getSupportedServiceNames(  )
 251     throw (RuntimeException, std::exception)
 252 {
 253     return EncryptorImpl_getSupportedServiceNames();
 254 }
 255
 256 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */