xmlsecurity/source/helper/xsecparser.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 "xsecparser.hxx"
  22 #include <tools/debug.hxx>
  23 #include <cppuhelper/exc_hlp.hxx>
  24
  25 #include <string.h>
  26
  27 namespace cssu = com::sun::star::uno;
  28 namespace cssxs = com::sun::star::xml::sax;
  29
  30 XSecParser::XSecParser(XSecController* pXSecController,
  31     const cssu::Reference< cssxs::XDocumentHandler >& xNextHandler)
  32     : m_bInX509IssuerName(false)
  33     , m_bInX509SerialNumber(false)
  34     , m_bInX509Certificate(false)
  35     , m_bInDigestValue(false)
  36     , m_bInSignatureValue(false)
  37     , m_bInDate(false)
  38     , m_pXSecController(pXSecController)
  39     , m_xNextHandler(xNextHandler)
  40     , m_bReferenceUnresolved(false)
  41 {
  42 }
  43
  44 OUString XSecParser::getIdAttr(const cssu::Reference< cssxs::XAttributeList >& xAttribs )
  45 {
  46     OUString ouIdAttr = xAttribs->getValueByName("id");
  47
  48     if (ouIdAttr == NULL)
  49     {
  50         ouIdAttr = xAttribs->getValueByName("Id");
  51     }
  52
  53     return ouIdAttr;
  54 }
  55
  56 /*
  57  * XDocumentHandler
  58  */
  59 void SAL_CALL XSecParser::startDocument(  )
  60     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
  61 {
  62     m_bInX509IssuerName = false;
  63     m_bInX509SerialNumber = false;
  64     m_bInX509Certificate = false;
  65     m_bInSignatureValue = false;
  66     m_bInDigestValue = false;
  67     m_bInDate = false;
  68
  69     if (m_xNextHandler.is())
  70     {
  71         m_xNextHandler->startDocument();
  72     }
  73 }
  74
  75 void SAL_CALL XSecParser::endDocument(  )
  76     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
  77 {
  78     if (m_xNextHandler.is())
  79     {
  80         m_xNextHandler->endDocument();
  81     }
  82 }
  83
  84 void SAL_CALL XSecParser::startElement(
  85     const OUString& aName,
  86     const cssu::Reference< cssxs::XAttributeList >& xAttribs )
  87     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
  88 {
  89     try
  90     {
  91         OUString ouIdAttr = getIdAttr(xAttribs);
  92         if (ouIdAttr != NULL)
  93         {
  94             m_pXSecController->collectToVerify( ouIdAttr );
  95         }
  96
  97         if ( aName == TAG_SIGNATURE )
  98         {
  99             m_pXSecController->addSignature();
 100             if (ouIdAttr != NULL)
 101             {
 102                 m_pXSecController->setId( ouIdAttr );
 103             }
 104         }
 105         else if ( aName == TAG_REFERENCE )
 106         {
 107             OUString ouUri = xAttribs->getValueByName(ATTR_URI);
 108             DBG_ASSERT( ouUri != NULL, "URI == NULL" );
 109
 110             if (ouUri.startsWith(CHAR_FRAGMENT))
 111             {
 112                 /*
 113                 * remove the first character '#' from the attribute value
 114                 */
 115                 m_pXSecController->addReference( ouUri.copy(1) );
 116             }
 117             else
 118             {
 119                 /*
 120                 * remember the uri
 121                 */
 122                 m_currentReferenceURI = ouUri;
 123                 m_bReferenceUnresolved = true;
 124             }
 125         }
 126             else if (aName == TAG_TRANSFORM)
 127             {
 128             if ( m_bReferenceUnresolved )
 129             {
 130                 OUString ouAlgorithm = xAttribs->getValueByName(ATTR_ALGORITHM);
 131
 132                 if (ouAlgorithm != NULL && ouAlgorithm == ALGO_C14N)
 133                 /*
 134                 * a xml stream
 135                 */
 136                 {
 137                     m_pXSecController->addStreamReference( m_currentReferenceURI, false);
 138                     m_bReferenceUnresolved = false;
 139                 }
 140             }
 141             }
 142             else if (aName == TAG_X509ISSUERNAME)
 143             {
 144             m_ouX509IssuerName.clear();
 145             m_bInX509IssuerName = true;
 146             }
 147             else if (aName == TAG_X509SERIALNUMBER)
 148             {
 149             m_ouX509SerialNumber.clear();
 150             m_bInX509SerialNumber = true;
 151             }
 152             else if (aName == TAG_X509CERTIFICATE)
 153             {
 154             m_ouX509Certificate.clear();
 155             m_bInX509Certificate = true;
 156             }
 157             else if (aName == TAG_SIGNATUREVALUE)
 158             {
 159             m_ouSignatureValue.clear();
 160                 m_bInSignatureValue = true;
 161             }
 162             else if (aName == TAG_DIGESTVALUE)
 163             {
 164                 m_ouDigestValue.clear();
 165                 m_bInDigestValue = true;
 166             }
 167             else if ( aName == TAG_SIGNATUREPROPERTY )
 168         {
 169             if (ouIdAttr != NULL)
 170             {
 171                 m_pXSecController->setPropertyId( ouIdAttr );
 172             }
 173         }
 174             else if (aName == NSTAG_DC ":" TAG_DATE)
 175             {
 176             m_ouDate.clear();
 177                 m_bInDate = true;
 178             }
 179
 180         if (m_xNextHandler.is())
 181         {
 182             m_xNextHandler->startElement(aName, xAttribs);
 183         }
 184     }
 185     catch (cssu::Exception& )
 186     {//getCaughtException MUST be the first line in the catch block
 187         cssu::Any exc =  cppu::getCaughtException();
 188         throw cssxs::SAXException(
 189             "xmlsecurity: Exception in XSecParser::startElement",
 190             0, exc);
 191     }
 192     catch (...)
 193     {
 194         throw cssxs::SAXException(
 195             "xmlsecurity: unexpected exception in XSecParser::startElement", 0,
 196             cssu::Any());
 197     }
 198 }
 199
 200 void SAL_CALL XSecParser::endElement( const OUString& aName )
 201     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
 202 {
 203     try
 204     {
 205         if (aName == TAG_DIGESTVALUE)
 206             {
 207                 m_bInDigestValue = false;
 208             }
 209         else if ( aName == TAG_REFERENCE )
 210         {
 211             if ( m_bReferenceUnresolved )
 212             /*
 213             * it must be a octet stream
 214             */
 215             {
 216                 m_pXSecController->addStreamReference( m_currentReferenceURI, true);
 217                 m_bReferenceUnresolved = false;
 218             }
 219
 220             m_pXSecController->setDigestValue( m_ouDigestValue );
 221         }
 222         else if ( aName == TAG_SIGNEDINFO )
 223         {
 224             m_pXSecController->setReferenceCount();
 225         }
 226         else if ( aName == TAG_SIGNATUREVALUE )
 227         {
 228             m_pXSecController->setSignatureValue( m_ouSignatureValue );
 229                 m_bInSignatureValue = false;
 230         }
 231             else if (aName == TAG_X509ISSUERNAME)
 232             {
 233             m_pXSecController->setX509IssuerName( m_ouX509IssuerName );
 234             m_bInX509IssuerName = false;
 235             }
 236             else if (aName == TAG_X509SERIALNUMBER)
 237             {
 238             m_pXSecController->setX509SerialNumber( m_ouX509SerialNumber );
 239             m_bInX509SerialNumber = false;
 240             }
 241             else if (aName == TAG_X509CERTIFICATE)
 242             {
 243             m_pXSecController->setX509Certificate( m_ouX509Certificate );
 244             m_bInX509Certificate = false;
 245             }
 246             else if (aName == NSTAG_DC ":" TAG_DATE)
 247         {
 248             m_pXSecController->setDate( m_ouDate );
 249                 m_bInDate = false;
 250         }
 251
 252         if (m_xNextHandler.is())
 253         {
 254             m_xNextHandler->endElement(aName);
 255         }
 256     }
 257     catch (cssu::Exception& )
 258     {//getCaughtException MUST be the first line in the catch block
 259         cssu::Any exc =  cppu::getCaughtException();
 260         throw cssxs::SAXException(
 261             "xmlsecurity: Exception in XSecParser::endElement",
 262             0, exc);
 263     }
 264     catch (...)
 265     {
 266         throw cssxs::SAXException(
 267             "xmlsecurity: unexpected exception in XSecParser::endElement", 0,
 268             cssu::Any());
 269     }
 270 }
 271
 272 void SAL_CALL XSecParser::characters( const OUString& aChars )
 273     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
 274 {
 275     if (m_bInX509IssuerName)
 276     {
 277         m_ouX509IssuerName += aChars;
 278     }
 279     else if (m_bInX509SerialNumber)
 280     {
 281         m_ouX509SerialNumber += aChars;
 282     }
 283     else if (m_bInX509Certificate)
 284     {
 285         m_ouX509Certificate += aChars;
 286     }
 287     else if (m_bInSignatureValue)
 288     {
 289         m_ouSignatureValue += aChars;
 290     }
 291     else if (m_bInDigestValue)
 292     {
 293         m_ouDigestValue += aChars;
 294     }
 295     else if (m_bInDate)
 296     {
 297         m_ouDate += aChars;
 298     }
 299
 300     if (m_xNextHandler.is())
 301     {
 302         m_xNextHandler->characters(aChars);
 303         }
 304 }
 305
 306 void SAL_CALL XSecParser::ignorableWhitespace( const OUString& aWhitespaces )
 307     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
 308 {
 309     if (m_xNextHandler.is())
 310     {
 311         m_xNextHandler->ignorableWhitespace( aWhitespaces );
 312         }
 313 }
 314
 315 void SAL_CALL XSecParser::processingInstruction( const OUString& aTarget, const OUString& aData )
 316     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
 317 {
 318     if (m_xNextHandler.is())
 319     {
 320         m_xNextHandler->processingInstruction(aTarget, aData);
 321         }
 322 }
 323
 324 void SAL_CALL XSecParser::setDocumentLocator( const cssu::Reference< cssxs::XLocator >& xLocator )
 325     throw (cssxs::SAXException, cssu::RuntimeException, std::exception)
 326 {
 327     if (m_xNextHandler.is())
 328     {
 329         m_xNextHandler->setDocumentLocator( xLocator );
 330         }
 331 }
 332
 333 /*
 334  * XInitialization
 335  */
 336 void SAL_CALL XSecParser::initialize(
 337     const cssu::Sequence< cssu::Any >& aArguments )
 338     throw(cssu::Exception, cssu::RuntimeException, std::exception)
 339 {
 340     aArguments[0] >>= m_xNextHandler;
 341 }
 342
 343 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */