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See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 // MARKER(update_precomp.py): autogen include statement, do not remove 29 #include "precompiled_xmlsecurity.hxx" 30 31 #include "encryptionengine.hxx" 32 #include <com/sun/star/xml/crypto/XXMLEncryptionTemplate.hpp> 33 #include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp> 34 #include <com/sun/star/lang/XMultiServiceFactory.hpp> 35 36 namespace cssu = com::sun::star::uno; 37 namespace cssl = com::sun::star::lang; 38 namespace cssxc = com::sun::star::xml::crypto; 39 namespace cssxw = com::sun::star::xml::wrapper; 40 41 #define ENCRYPTION_TEMPLATE "com.sun.star.xml.crypto.XMLEncryptionTemplate" 42 43 #define DECLARE_ASCII( SASCIIVALUE ) \ 44 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( SASCIIVALUE ) ) 45 46 EncryptionEngine::EncryptionEngine( ) 47 :m_nIdOfBlocker(-1) 48 { 49 } 50 51 bool EncryptionEngine::checkReady() const 52 /****** EncryptionEngine/checkReady ****************************************** 53 * 54 * NAME 55 * checkReady -- checks the conditions for the main operation. 56 * 57 * SYNOPSIS 58 * bReady = checkReady( ); 59 * 60 * FUNCTION 61 * checks whether all following conditions are satisfied: 62 * 1. the main operation has't begun yet; 63 * 2. the key material is known; 64 * 3. the id of the template blocker is known; 65 * 4. both the key element and the encryption template 66 * are bufferred. 67 * 68 * INPUTS 69 * empty 70 * 71 * RESULT 72 * bReady - true if all conditions are satisfied, false otherwise 73 * 74 * HISTORY 75 * 05.01.2004 - implemented 76 * 77 * AUTHOR 78 * Michael Mi 79 * Email: michael.mi@sun.com 80 ******************************************************************************/ 81 { 82 bool rc = true; 83 84 sal_Int32 nKeyInc = 0; 85 if (m_nIdOfKeyEC != 0) 86 { 87 nKeyInc = 1; 88 } 89 90 if (m_bMissionDone || 91 m_nIdOfKeyEC == -1 || 92 m_nIdOfBlocker == -1 || 93 1+nKeyInc > m_nNumOfResolvedReferences ) 94 { 95 rc = false; 96 } 97 98 return rc; 99 } 100 101 void EncryptionEngine::tryToPerform( ) 102 throw (cssu::Exception, cssu::RuntimeException) 103 /****** EncryptionEngine/tryToPerform **************************************** 104 * 105 * NAME 106 * tryToPerform -- tries to perform the encryption/decryption operation. 107 * 108 * SYNOPSIS 109 * tryToPerform( ); 110 * 111 * FUNCTION 112 * if the situation is ready, perform following operations. 113 * 1. prepares a encryption template; 114 * 2. calls the encryption bridge component; 115 * 3. clears up all used resources; 116 * 4. notifies the result listener; 117 * 5. sets the "accomplishment" flag. 118 * 119 * INPUTS 120 * empty 121 * 122 * RESULT 123 * empty 124 * 125 * HISTORY 126 * 05.01.2004 - implemented 127 * 128 * AUTHOR 129 * Michael Mi 130 * Email: michael.mi@sun.com 131 ******************************************************************************/ 132 { 133 if (checkReady()) 134 { 135 const rtl::OUString sEncryptionTemplate ( 136 RTL_CONSTASCII_USTRINGPARAM( ENCRYPTION_TEMPLATE ) ); 137 cssu::Reference < cssxc::XXMLEncryptionTemplate > xEncryptionTemplate( 138 mxMSF->createInstance( sEncryptionTemplate ), cssu::UNO_QUERY ); 139 140 OSL_ASSERT( xEncryptionTemplate.is() ); 141 142 cssu::Reference< cssxw::XXMLElementWrapper > xXMLElement 143 = m_xSAXEventKeeper->getElement( m_nIdOfTemplateEC ); 144 145 xEncryptionTemplate->setTemplate(xXMLElement); 146 147 startEngine( xEncryptionTemplate ); 148 149 /* 150 * done 151 */ 152 clearUp( ); 153 154 notifyResultListener(); 155 156 m_bMissionDone = true; 157 } 158 } 159 160 void EncryptionEngine::clearUp( ) const 161 /****** EncryptionEngine/clearup ********************************************* 162 * 163 * NAME 164 * clearUp -- clear up all resources used by this operation. 165 * 166 * SYNOPSIS 167 * clearUp( ); 168 * 169 * FUNCTION 170 * cleaning resources up includes: 171 * 1. releases the ElementCollector for the encryption template element; 172 * 2. releases the Blocker for the encryption template element; 173 * 3. releases the ElementCollector for the key element, if there is one. 174 * 175 * INPUTS 176 * empty 177 * 178 * RESULT 179 * empty 180 * 181 * HISTORY 182 * 05.01.2004 - implemented 183 * 184 * AUTHOR 185 * Michael Mi 186 * Email: michael.mi@sun.com 187 ******************************************************************************/ 188 { 189 cssu::Reference < cssxc::sax::XReferenceResolvedBroadcaster > 190 xReferenceResolvedBroadcaster( m_xSAXEventKeeper, cssu::UNO_QUERY ); 191 192 xReferenceResolvedBroadcaster->removeReferenceResolvedListener( 193 m_nIdOfTemplateEC, 194 (const cssu::Reference < cssxc::sax::XReferenceResolvedListener >)((SecurityEngine *)this)); 195 196 m_xSAXEventKeeper->removeElementCollector(m_nIdOfTemplateEC); 197 198 if (m_nIdOfBlocker != -1) 199 { 200 m_xSAXEventKeeper->removeBlocker(m_nIdOfBlocker); 201 } 202 203 if (m_nIdOfKeyEC != 0 && m_nIdOfKeyEC != -1) 204 { 205 m_xSAXEventKeeper->removeElementCollector(m_nIdOfKeyEC); 206 } 207 } 208 209 /* XBlockerMonitor */ 210 void SAL_CALL EncryptionEngine::setBlockerId( sal_Int32 id ) 211 throw (com::sun::star::uno::Exception, com::sun::star::uno::RuntimeException) 212 { 213 m_nIdOfBlocker = id; 214 tryToPerform(); 215 } 216 217