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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 "signatureengine.hxx"
22 : #include <com/sun/star/xml/crypto/XXMLSignatureTemplate.hpp>
23 : #include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
24 : #include <com/sun/star/lang/XMultiServiceFactory.hpp>
25 :
26 : namespace cssu = com::sun::star::uno;
27 : namespace cssl = com::sun::star::lang;
28 : namespace cssxc = com::sun::star::xml::crypto;
29 : namespace cssxw = com::sun::star::xml::wrapper;
30 :
31 : #define SIGNATURE_TEMPLATE "com.sun.star.xml.crypto.XMLSignatureTemplate"
32 :
33 0 : SignatureEngine::SignatureEngine( )
34 0 : :m_nTotalReferenceNumber(-1)
35 : {
36 0 : }
37 :
38 0 : bool SignatureEngine::checkReady() const
39 : /****** SignatureEngine/checkReady *******************************************
40 : *
41 : * NAME
42 : * checkReady -- checks the conditions for the main operation.
43 : *
44 : * SYNOPSIS
45 : * bReady = checkReady( );
46 : *
47 : * FUNCTION
48 : * checks whether all following conditions are satisfied:
49 : * 1. the main operation has't begun yet;
50 : * 2. the key material is known;
51 : * 3. the amount of reference is known;
52 : * 4. all of referenced elements, the key element and the signature
53 : * template are bufferred.
54 : *
55 : * INPUTS
56 : * empty
57 : *
58 : * RESULT
59 : * bReady - true if all conditions are satisfied, false otherwise
60 : *
61 : * AUTHOR
62 : * Michael Mi
63 : * Email: michael.mi@sun.com
64 : ******************************************************************************/
65 : {
66 0 : bool rc = true;
67 :
68 0 : sal_Int32 nKeyInc = 0;
69 0 : if (m_nIdOfKeyEC != 0)
70 : {
71 0 : nKeyInc = 1;
72 : }
73 :
74 0 : if (m_bMissionDone ||
75 : m_nIdOfKeyEC == -1 ||
76 : m_nTotalReferenceNumber == -1 ||
77 : m_nTotalReferenceNumber+1+nKeyInc > m_nNumOfResolvedReferences)
78 : {
79 0 : rc = false;
80 : }
81 :
82 0 : return rc;
83 : }
84 :
85 0 : void SignatureEngine::tryToPerform( )
86 : throw (cssu::Exception, cssu::RuntimeException)
87 : /****** SignatureEngine/tryToPerform *****************************************
88 : *
89 : * NAME
90 : * tryToPerform -- tries to perform the signature operation.
91 : *
92 : * SYNOPSIS
93 : * tryToPerform( );
94 : *
95 : * FUNCTION
96 : * if the situation is ready, perform following operations.
97 : * 1. prepares a signature template;
98 : * 2. calls the signature bridge component;
99 : * 3. clears up all used resources;
100 : * 4. notifies the result listener;
101 : * 5. sets the "accomplishment" flag.
102 : *
103 : * INPUTS
104 : * empty
105 : *
106 : * RESULT
107 : * empty
108 : *
109 : * AUTHOR
110 : * Michael Mi
111 : * Email: michael.mi@sun.com
112 : ******************************************************************************/
113 : {
114 0 : if (checkReady())
115 : {
116 : const rtl::OUString ouSignatureTemplate (
117 0 : RTL_CONSTASCII_USTRINGPARAM( SIGNATURE_TEMPLATE ) );
118 : cssu::Reference < cssxc::XXMLSignatureTemplate >
119 0 : xSignatureTemplate( mxMSF->createInstance( ouSignatureTemplate ), cssu::UNO_QUERY );
120 :
121 : OSL_ASSERT( xSignatureTemplate.is() );
122 :
123 : cssu::Reference< cssxw::XXMLElementWrapper >
124 0 : xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );
125 :
126 0 : xSignatureTemplate->setTemplate(xXMLElement);
127 :
128 0 : std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
129 :
130 0 : for( ; ii != m_vReferenceIds.end() ; ++ii )
131 : {
132 0 : xXMLElement = m_xSAXEventKeeper->getElement( *ii );
133 0 : xSignatureTemplate->setTarget(xXMLElement);
134 : }
135 :
136 : /*
137 : * set the Uri binding
138 : */
139 0 : xSignatureTemplate->setBinding( this );
140 :
141 0 : startEngine( xSignatureTemplate );
142 :
143 : /*
144 : * done
145 : */
146 0 : clearUp( );
147 :
148 0 : notifyResultListener();
149 :
150 0 : m_bMissionDone = true;
151 : }
152 0 : }
153 :
154 0 : void SignatureEngine::clearUp( ) const
155 : /****** SignatureEngine/clearUp **********************************************
156 : *
157 : * NAME
158 : * clearUp -- clear up all resources used by this operation.
159 : *
160 : * SYNOPSIS
161 : * clearUp( );
162 : *
163 : * FUNCTION
164 : * cleaning resources up includes:
165 : * 1. releases the ElementCollector for the signature template element;
166 : * 2. releases ElementCollectors for referenced elements;
167 : * 3. releases the ElementCollector for the key element, if there is one.
168 : *
169 : * INPUTS
170 : * empty
171 : *
172 : * RESULT
173 : * empty
174 : *
175 : * AUTHOR
176 : * Michael Mi
177 : * Email: michael.mi@sun.com
178 : ******************************************************************************/
179 : {
180 : cssu::Reference < cssxc::sax::XReferenceResolvedBroadcaster >
181 0 : xReferenceResolvedBroadcaster( m_xSAXEventKeeper, cssu::UNO_QUERY );
182 0 : xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
183 : m_nIdOfTemplateEC,
184 0 : (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
185 :
186 0 : m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);
187 :
188 0 : std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
189 :
190 0 : for( ; ii != m_vReferenceIds.end() ; ++ii )
191 : {
192 0 : xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
193 0 : *ii,
194 0 : (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
195 0 : m_xSAXEventKeeper->removeElementCollector(*ii);
196 : }
197 :
198 0 : if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
199 : {
200 0 : m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
201 0 : }
202 0 : }
203 :
204 : /* XReferenceCollector */
205 0 : void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count )
206 : throw (cssu::Exception, cssu::RuntimeException)
207 : {
208 0 : m_nTotalReferenceNumber = count;
209 0 : tryToPerform();
210 0 : }
211 :
212 0 : void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id )
213 : throw (cssu::Exception, cssu::RuntimeException)
214 : {
215 0 : m_vReferenceIds.push_back( id );
216 0 : }
217 :
218 : /* XUriBinding */
219 0 : void SAL_CALL SignatureEngine::setUriBinding(
220 : const rtl::OUString& uri,
221 : const cssu::Reference< com::sun::star::io::XInputStream >& aInputStream )
222 : throw (cssu::Exception, cssu::RuntimeException)
223 : {
224 0 : m_vUris.push_back(uri);
225 0 : m_vXInputStreams.push_back(aInputStream);
226 0 : }
227 :
228 0 : cssu::Reference< com::sun::star::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const rtl::OUString& uri )
229 : throw (cssu::Exception, cssu::RuntimeException)
230 : {
231 0 : cssu::Reference< com::sun::star::io::XInputStream > xInputStream;
232 :
233 0 : int size = m_vUris.size();
234 :
235 0 : for( int i=0; i<size; ++i)
236 : {
237 0 : if (m_vUris[i] == uri)
238 : {
239 0 : xInputStream = m_vXInputStreams[i];
240 0 : break;
241 : }
242 : }
243 :
244 0 : return xInputStream;
245 : }
246 :
247 :
248 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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