1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_xmlsecurity.hxx"
26
27 #include "signatureengine.hxx"
28 #include <com/sun/star/xml/crypto/XXMLSignatureTemplate.hpp>
29 #include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
30 #include <com/sun/star/lang/XMultiServiceFactory.hpp>
31
32 namespace cssu = com::sun::star::uno;
33 namespace cssl = com::sun::star::lang;
34 namespace cssxc = com::sun::star::xml::crypto;
35 namespace cssxw = com::sun::star::xml::wrapper;
36
37 #define SIGNATURE_TEMPLATE "com.sun.star.xml.crypto.XMLSignatureTemplate"
38
39 #define DECLARE_ASCII( SASCIIVALUE ) \
40 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( SASCIIVALUE ) )
41
SignatureEngine()42 SignatureEngine::SignatureEngine( )
43 :m_nTotalReferenceNumber(-1)
44 {
45 }
46
checkReady() const47 bool SignatureEngine::checkReady() const
48 /****** SignatureEngine/checkReady *******************************************
49 *
50 * NAME
51 * checkReady -- checks the conditions for the main operation.
52 *
53 * SYNOPSIS
54 * bReady = checkReady( );
55 *
56 * FUNCTION
57 * checks whether all following conditions are satisfied:
58 * 1. the main operation has't begun yet;
59 * 2. the key material is known;
60 * 3. the amount of reference is known;
61 * 4. all of referenced elements, the key element and the signature
62 * template are bufferred.
63 *
64 * INPUTS
65 * empty
66 *
67 * RESULT
68 * bReady - true if all conditions are satisfied, false otherwise
69 *
70 * HISTORY
71 * 05.01.2004 - implemented
72 *
73 * AUTHOR
74 * Michael Mi
75 * Email: michael.mi@sun.com
76 ******************************************************************************/
77 {
78 bool rc = true;
79
80 sal_Int32 nKeyInc = 0;
81 if (m_nIdOfKeyEC != 0)
82 {
83 nKeyInc = 1;
84 }
85
86 if (m_bMissionDone ||
87 m_nIdOfKeyEC == -1 ||
88 m_nTotalReferenceNumber == -1 ||
89 m_nTotalReferenceNumber+1+nKeyInc > m_nNumOfResolvedReferences)
90 {
91 rc = false;
92 }
93
94 return rc;
95 }
96
tryToPerform()97 void SignatureEngine::tryToPerform( )
98 /****** SignatureEngine/tryToPerform *****************************************
99 *
100 * NAME
101 * tryToPerform -- tries to perform the signature operation.
102 *
103 * SYNOPSIS
104 * tryToPerform( );
105 *
106 * FUNCTION
107 * if the situation is ready, perform following operations.
108 * 1. prepares a signature template;
109 * 2. calls the signature bridge component;
110 * 3. clears up all used resources;
111 * 4. notifies the result listener;
112 * 5. sets the "accomplishment" flag.
113 *
114 * INPUTS
115 * empty
116 *
117 * RESULT
118 * empty
119 *
120 * HISTORY
121 * 05.01.2004 - implemented
122 *
123 * AUTHOR
124 * Michael Mi
125 * Email: michael.mi@sun.com
126 ******************************************************************************/
127 {
128 if (checkReady())
129 {
130 const rtl::OUString ouSignatureTemplate (
131 RTL_CONSTASCII_USTRINGPARAM( SIGNATURE_TEMPLATE ) );
132 cssu::Reference < cssxc::XXMLSignatureTemplate >
133 xSignatureTemplate( mxMSF->createInstance( ouSignatureTemplate ), cssu::UNO_QUERY );
134
135 OSL_ASSERT( xSignatureTemplate.is() );
136
137 cssu::Reference< cssxw::XXMLElementWrapper >
138 xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );
139
140 xSignatureTemplate->setTemplate(xXMLElement);
141
142 std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
143
144 for( ; ii != m_vReferenceIds.end() ; ++ii )
145 {
146 xXMLElement = m_xSAXEventKeeper->getElement( *ii );
147 xSignatureTemplate->setTarget(xXMLElement);
148 }
149
150 /*
151 * set the Uri binding
152 */
153 xSignatureTemplate->setBinding( this );
154
155 startEngine( xSignatureTemplate );
156
157 /*
158 * done
159 */
160 clearUp( );
161
162 notifyResultListener();
163
164 m_bMissionDone = true;
165 }
166 }
167
clearUp() const168 void SignatureEngine::clearUp( ) const
169 /****** SignatureEngine/clearUp **********************************************
170 *
171 * NAME
172 * clearUp -- clear up all resources used by this operation.
173 *
174 * SYNOPSIS
175 * clearUp( );
176 *
177 * FUNCTION
178 * cleaning resources up includes:
179 * 1. releases the ElementCollector for the signature template element;
180 * 2. releases ElementCollectors for referenced elements;
181 * 3. releases the ElementCollector for the key element, if there is one.
182 *
183 * INPUTS
184 * empty
185 *
186 * RESULT
187 * empty
188 *
189 * HISTORY
190 * 05.01.2004 - implemented
191 *
192 * AUTHOR
193 * Michael Mi
194 * Email: michael.mi@sun.com
195 ******************************************************************************/
196 {
197 cssu::Reference < cssxc::sax::XReferenceResolvedBroadcaster >
198 xReferenceResolvedBroadcaster( m_xSAXEventKeeper, cssu::UNO_QUERY );
199 xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
200 m_nIdOfTemplateEC,
201 (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
202
203 m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);
204
205 std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
206
207 for( ; ii != m_vReferenceIds.end() ; ++ii )
208 {
209 xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
210 *ii,
211 (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
212 m_xSAXEventKeeper->removeElementCollector(*ii);
213 }
214
215 if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
216 {
217 m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
218 }
219 }
220
221 /* XReferenceCollector */
setReferenceCount(sal_Int32 count)222 void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count )
223 {
224 m_nTotalReferenceNumber = count;
225 tryToPerform();
226 }
227
setReferenceId(sal_Int32 id)228 void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id )
229 {
230 m_vReferenceIds.push_back( id );
231 }
232
233 /* XUriBinding */
setUriBinding(const rtl::OUString & uri,const cssu::Reference<com::sun::star::io::XInputStream> & aInputStream)234 void SAL_CALL SignatureEngine::setUriBinding(
235 const rtl::OUString& uri,
236 const cssu::Reference< com::sun::star::io::XInputStream >& aInputStream )
237 {
238 m_vUris.push_back(uri);
239 m_vXInputStreams.push_back(aInputStream);
240 }
241
getUriBinding(const rtl::OUString & uri)242 cssu::Reference< com::sun::star::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const rtl::OUString& uri )
243 {
244 cssu::Reference< com::sun::star::io::XInputStream > xInputStream;
245
246 int size = m_vUris.size();
247
248 for( int i=0; i<size; ++i)
249 {
250 if (m_vUris[i] == uri)
251 {
252 xInputStream = m_vXInputStreams[i];
253 break;
254 }
255 }
256
257 return xInputStream;
258 }
259