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/*
* Copyright (c) 2011-2014, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "XmlDocSource.h"
#include <libxml/tree.h>
#include <libxml/xmlschemas.h>
#include <stdlib.h>
using std::string;
// Schedule for libxml2 library
bool CXmlDocSource::_bLibXml2CleanupScheduled;
CXmlDocSource::CXmlDocSource(_xmlDoc *pDoc, _xmlNode *pRootNode,
bool bValidateWithSchema) :
_pDoc(pDoc),
_pRootNode(pRootNode),
_strXmlSchemaFile(""),
_strRootElementType(""),
_strRootElementName(""),
_strNameAttrituteName(""),
_bNameCheck(false),
_bValidateWithSchema(bValidateWithSchema)
{
init();
}
CXmlDocSource::CXmlDocSource(_xmlDoc *pDoc,
const string& strXmlSchemaFile,
const string& strRootElementType,
const string& strRootElementName,
const string& strNameAttrituteName) :
_pDoc(pDoc),
_pRootNode(NULL),
_strXmlSchemaFile(strXmlSchemaFile),
_strRootElementType(strRootElementType),
_strRootElementName(strRootElementName),
_strNameAttrituteName(strNameAttrituteName),
_bNameCheck(true),
_bValidateWithSchema(false)
{
init();
}
CXmlDocSource::CXmlDocSource(_xmlDoc* pDoc,
const string& strXmlSchemaFile,
const string& strRootElementType,
bool bValidateWithSchema) :
_pDoc(pDoc), _pRootNode(NULL),
_strXmlSchemaFile(strXmlSchemaFile),
_strRootElementType(strRootElementType),
_strRootElementName(""),
_strNameAttrituteName(""),
_bNameCheck(false),
_bValidateWithSchema(bValidateWithSchema)
{
init();
}
CXmlDocSource::CXmlDocSource(_xmlDoc *pDoc,
const string& strXmlSchemaFile,
const string& strRootElementType,
const string& strRootElementName,
const string& strNameAttrituteName,
bool bValidateWithSchema) :
_pDoc(pDoc),
_pRootNode(NULL),
_strXmlSchemaFile(strXmlSchemaFile),
_strRootElementType(strRootElementType),
_strRootElementName(strRootElementName),
_strNameAttrituteName(strNameAttrituteName),
_bNameCheck(true),
_bValidateWithSchema(bValidateWithSchema)
{
init();
}
CXmlDocSource::~CXmlDocSource()
{
if (_pDoc) {
// Free XML doc
xmlFreeDoc(_pDoc);
_pDoc = NULL;
}
}
void CXmlDocSource::getRootElement(CXmlElement& xmlRootElement) const
{
xmlRootElement.setXmlElement(_pRootNode);
}
string CXmlDocSource::getRootElementName() const
{
return (const char*)_pRootNode->name;
}
string CXmlDocSource::getRootElementAttributeString(const string& strAttributeName) const
{
CXmlElement topMostElement(_pRootNode);
return topMostElement.getAttributeString(strAttributeName);
}
_xmlDoc* CXmlDocSource::getDoc() const
{
return _pDoc;
}
bool CXmlDocSource::validate(CXmlSerializingContext& serializingContext)
{
// Check that the doc has been created
if (!_pDoc) {
serializingContext.setError("Could not parse document ");
return false;
}
// Validate if necessary
if (_bValidateWithSchema)
{
if (!isInstanceDocumentValid()) {
serializingContext.setError("Document is not valid");
return false;
}
}
// Check Root element type
if (getRootElementName() != _strRootElementType) {
serializingContext.setError("Error: Wrong XML structure document ");
serializingContext.appendLineToError("Root Element " + getRootElementName()
+ " mismatches expected type " + _strRootElementType);
return false;
}
if (_bNameCheck) {
string strRootElementNameCheck = getRootElementAttributeString(_strNameAttrituteName);
// Check Root element name attribute (if any)
if (!_strRootElementName.empty() && strRootElementNameCheck != _strRootElementName) {
serializingContext.setError("Error: Wrong XML structure document ");
serializingContext.appendLineToError(_strRootElementType + " element "
+ _strRootElementName + " mismatches expected "
+ _strRootElementType + " type "
+ strRootElementNameCheck);
return false;
}
}
return true;
}
void CXmlDocSource::init()
{
if (!_bLibXml2CleanupScheduled) {
// Schedule cleanup
atexit(xmlCleanupParser);
_bLibXml2CleanupScheduled = true;
}
if (!_pRootNode) {
_pRootNode = xmlDocGetRootElement(_pDoc);
}
}
bool CXmlDocSource::isInstanceDocumentValid()
{
#ifdef LIBXML_SCHEMAS_ENABLED
xmlDocPtr pSchemaDoc = xmlReadFile(_strXmlSchemaFile.c_str(), NULL, XML_PARSE_NONET);
if (!pSchemaDoc) {
// Unable to load Schema
return false;
}
xmlSchemaParserCtxtPtr pParserCtxt = xmlSchemaNewDocParserCtxt(pSchemaDoc);
if (!pParserCtxt) {
// Unable to create schema context
xmlFreeDoc(pSchemaDoc);
return false;
}
// Get Schema
xmlSchemaPtr pSchema = xmlSchemaParse(pParserCtxt);
if (!pSchema) {
// Invalid Schema
xmlSchemaFreeParserCtxt(pParserCtxt);
xmlFreeDoc(pSchemaDoc);
return false;
}
xmlSchemaValidCtxtPtr pValidationCtxt = xmlSchemaNewValidCtxt(pSchema);
if (!pValidationCtxt) {
// Unable to create validation context
xmlSchemaFree(pSchema);
xmlSchemaFreeParserCtxt(pParserCtxt);
xmlFreeDoc(pSchemaDoc);
return false;
}
xmlSetStructuredErrorFunc(this, schemaValidityStructuredErrorFunc);
bool isDocValid = xmlSchemaValidateDoc(pValidationCtxt, _pDoc) == 0;
xmlSchemaFreeValidCtxt(pValidationCtxt);
xmlSchemaFree(pSchema);
xmlSchemaFreeParserCtxt(pParserCtxt);
xmlFreeDoc(pSchemaDoc);
return isDocValid;
#else
return true;
#endif
}
void CXmlDocSource::schemaValidityStructuredErrorFunc(void* pUserData, _xmlError* pError)
{
(void)pUserData;
#ifdef LIBXML_SCHEMAS_ENABLED
// Display message
puts(pError->message);
#endif
}
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