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TXFMXPath.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  * Copyright (c) 2002 Berin Lautenbach.  All rights reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  *
00010  * 1. Redistributions of source code must retain the above copyright
00011  *    notice, this list of conditions and the following disclaimer.
00012  *
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in
00015  *    the documentation and/or other materials provided with the
00016  *    distribution.
00017  *
00018  * 3. The end-user documentation included with the redistribution,
00019  *    if any, must include the following acknowledgment:
00020  *       "This product includes software developed by
00021  *                   Berin Lautenbach"
00022  *    Alternately, this acknowledgment may appear in the software itself,
00023  *    if and wherever such third-party acknowledgments normally appear.
00024  *
00025  * 4. The names "XSEC", "xml-security-c" and Berin Lautenbach must
00026  *    not be used to endorse or promote products derived from this
00027  *    software without prior written permission. For written
00028  *    permission, please contact berin@users.sourceforge.net.
00029  *
00030  * 5. Products derived from this software may not be called "xml-security-c",
00031  *    nor may "xml-security-c" appear in their name, without prior written
00032  *    permission of Berin Lautenbach.
00033  *
00034  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00035  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00036  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00037  * DISCLAIMED.  IN NO EVENT SHALL BERIN LAUTENBACH OR OTHER
00038  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00039  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00040  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00041  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00042  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00043  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00044  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00045  * SUCH DAMAGE.
00046  * ====================================================================
00047  */
00048 
00049 /*
00050  * XSEC
00051  *
00052  * TXFMXPath := Class that performs XPath transforms
00053  *
00054  */
00055 
00056 #include <xsec/transformers/TXFMBase.hpp>
00057 #include <xsec/utils/XSECSafeBuffer.hpp>
00058 #include <xsec/canon/XSECC14n20010315.hpp>
00059 #include <xsec/dsig/DSIGXPathHere.hpp>
00060 #include <xsec/utils/XSECSafeBufferFormatter.hpp>
00061 
00062 // Xerces
00063 
00064 #include <xercesc/dom/DOM.hpp>
00065 
00066 // Xalan
00067 
00068 #ifndef XSEC_NO_XALAN
00069 
00070 #include <XalanDOM/XalanDocument.hpp>
00071 #include <XercesParserLiaison/XercesDocumentWrapper.hpp>
00072 #include <XercesParserLiaison/XercesDOMSupport.hpp>
00073 #include <XercesParserLiaison/XercesParserLiaison.hpp>
00074 #include <XPath/XPathEvaluator.hpp>
00075 #include <XPath/XPathProcessorImpl.hpp>
00076 #include <XPath/XPathFactoryDefault.hpp>
00077 #include <XPath/NodeRefList.hpp>
00078 #include <XPath/XPathEnvSupportDefault.hpp>
00079 #include <XPath/XPathConstructionContextDefault.hpp>
00080 #include <XPath/ElementPrefixResolverProxy.hpp>
00081 
00082 #endif
00083 
00084 #ifndef XSEC_NO_XPATH
00085 
00086 class DSIG_EXPORT TXFMXPath : public TXFMBase {
00087 
00088 private:
00089 
00090     safeBuffer expr;                            // The expression being worked with
00091 
00092     DOMDocument         * document;
00093     DOMNamedNodeMap     * XPathAtts;    // Attributes that came through from the doc
00094 
00095     static  bool        XPathInitDone;
00096 
00097     DSIGXPathHere       * here;         // The function to implement here()
00098     XSECSafeBufferFormatter * formatter;
00099 
00100 public:
00101 
00102     TXFMXPath(DOMDocument *doc);
00103     ~TXFMXPath();
00104 
00105     // Methods to set the inputs
00106 
00107     void setInput(TXFMBase *newInput);
00108     
00109     // Methods to get tranform output type and input requirement
00110 
00111     virtual TXFMBase::ioType getInputType(void);
00112     virtual TXFMBase::ioType getOutputType(void);
00113     virtual TXFMBase::nodeType getNodeType(void);
00114 
00115     // XPath unique
00116 
00117     void setNameSpace(DOMNamedNodeMap *xpAtts);
00118     void evaluateExpr(DOMNode *h, safeBuffer expr);
00119     void evaluateEnvelope(DOMNode *t);
00120 
00121     // Methods to get output data
00122 
00123     virtual unsigned int readBytes(XMLByte * const toFill, const unsigned int maxToFill);
00124     virtual DOMDocument *getDocument();
00125     virtual DOMNode *getFragmentNode();
00126     virtual safeBuffer getFragmentId();
00127     virtual XSECXPathNodeList   & getXPathNodeList();
00128 private:
00129     TXFMXPath();
00130 };
00131 
00132 #endif

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