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 throw (cssu::Exception, cssu::RuntimeException)
99 /****** SignatureEngine/tryToPerform *****************************************
100 *
101 * NAME
102 * tryToPerform -- tries to perform the signature operation.
103 *
104 * SYNOPSIS
105 * tryToPerform( );
106 *
107 * FUNCTION
108 * if the situation is ready, perform following operations.
109 * 1. prepares a signature template;
110 * 2. calls the signature bridge component;
111 * 3. clears up all used resources;
112 * 4. notifies the result listener;
113 * 5. sets the "accomplishment" flag.
114 *
115 * INPUTS
116 * empty
117 *
118 * RESULT
119 * empty
120 *
121 * HISTORY
122 * 05.01.2004 - implemented
123 *
124 * AUTHOR
125 * Michael Mi
126 * Email: michael.mi@sun.com
127 ******************************************************************************/
128 {
129 if (checkReady())
130 {
131 const rtl::OUString ouSignatureTemplate (
132 RTL_CONSTASCII_USTRINGPARAM( SIGNATURE_TEMPLATE ) );
133 cssu::Reference < cssxc::XXMLSignatureTemplate >
134 xSignatureTemplate( mxMSF->createInstance( ouSignatureTemplate ), cssu::UNO_QUERY );
135
136 OSL_ASSERT( xSignatureTemplate.is() );
137
138 cssu::Reference< cssxw::XXMLElementWrapper >
139 xXMLElement = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC );
140
141 xSignatureTemplate->setTemplate(xXMLElement);
142
143 std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
144
145 for( ; ii != m_vReferenceIds.end() ; ++ii )
146 {
147 xXMLElement = m_xSAXEventKeeper->getElement( *ii );
148 xSignatureTemplate->setTarget(xXMLElement);
149 }
150
151 /*
152 * set the Uri binding
153 */
154 xSignatureTemplate->setBinding( this );
155
156 startEngine( xSignatureTemplate );
157
158 /*
159 * done
160 */
161 clearUp( );
162
163 notifyResultListener();
164
165 m_bMissionDone = true;
166 }
167 }
168
clearUp() const169 void SignatureEngine::clearUp( ) const
170 /****** SignatureEngine/clearUp **********************************************
171 *
172 * NAME
173 * clearUp -- clear up all resources used by this operation.
174 *
175 * SYNOPSIS
176 * clearUp( );
177 *
178 * FUNCTION
179 * cleaning resources up includes:
180 * 1. releases the ElementCollector for the signature template element;
181 * 2. releases ElementCollectors for referenced elements;
182 * 3. releases the ElementCollector for the key element, if there is one.
183 *
184 * INPUTS
185 * empty
186 *
187 * RESULT
188 * empty
189 *
190 * HISTORY
191 * 05.01.2004 - implemented
192 *
193 * AUTHOR
194 * Michael Mi
195 * Email: michael.mi@sun.com
196 ******************************************************************************/
197 {
198 cssu::Reference < cssxc::sax::XReferenceResolvedBroadcaster >
199 xReferenceResolvedBroadcaster( m_xSAXEventKeeper, cssu::UNO_QUERY );
200 xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
201 m_nIdOfTemplateEC,
202 (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
203
204 m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC);
205
206 std::vector< sal_Int32 >::const_iterator ii = m_vReferenceIds.begin();
207
208 for( ; ii != m_vReferenceIds.end() ; ++ii )
209 {
210 xReferenceResolvedBroadcaster->removeReferenceResolvedListener(
211 *ii,
212 (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this));
213 m_xSAXEventKeeper->removeElementCollector(*ii);
214 }
215
216 if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1)
217 {
218 m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC);
219 }
220 }
221
222 /* XReferenceCollector */
setReferenceCount(sal_Int32 count)223 void SAL_CALL SignatureEngine::setReferenceCount( sal_Int32 count )
224 throw (cssu::Exception, cssu::RuntimeException)
225 {
226 m_nTotalReferenceNumber = count;
227 tryToPerform();
228 }
229
setReferenceId(sal_Int32 id)230 void SAL_CALL SignatureEngine::setReferenceId( sal_Int32 id )
231 throw (cssu::Exception, cssu::RuntimeException)
232 {
233 m_vReferenceIds.push_back( id );
234 }
235
236 /* XUriBinding */
setUriBinding(const rtl::OUString & uri,const cssu::Reference<com::sun::star::io::XInputStream> & aInputStream)237 void SAL_CALL SignatureEngine::setUriBinding(
238 const rtl::OUString& uri,
239 const cssu::Reference< com::sun::star::io::XInputStream >& aInputStream )
240 throw (cssu::Exception, cssu::RuntimeException)
241 {
242 m_vUris.push_back(uri);
243 m_vXInputStreams.push_back(aInputStream);
244 }
245
getUriBinding(const rtl::OUString & uri)246 cssu::Reference< com::sun::star::io::XInputStream > SAL_CALL SignatureEngine::getUriBinding( const rtl::OUString& uri )
247 throw (cssu::Exception, cssu::RuntimeException)
248 {
249 cssu::Reference< com::sun::star::io::XInputStream > xInputStream;
250
251 int size = m_vUris.size();
252
253 for( int i=0; i<size; ++i)
254 {
255 if (m_vUris[i] == uri)
256 {
257 xInputStream = m_vXInputStreams[i];
258 break;
259 }
260 }
261
262 return xInputStream;
263 }
264
265