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/*
 * Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.ws.wsdl.parser;

import com.sun.istack.NotNull;
import com.sun.istack.Nullable;
import com.sun.xml.stream.buffer.MutableXMLStreamBuffer;
import com.sun.xml.stream.buffer.XMLStreamBuffer;
import com.sun.xml.stream.buffer.XMLStreamBufferMark;
import com.sun.xml.stream.buffer.stax.StreamReaderBufferCreator;
import com.sun.xml.ws.api.BindingID;
import com.sun.xml.ws.api.BindingIDFactory;
import com.sun.xml.ws.api.SOAPVersion;
import com.sun.xml.ws.api.EndpointAddress;
import com.sun.xml.ws.api.WSDLLocator;
import com.sun.xml.ws.api.policy.PolicyResolver;
import com.sun.xml.ws.api.policy.PolicyResolverFactory;
import com.sun.xml.ws.api.addressing.AddressingVersion;
import com.sun.xml.ws.api.addressing.WSEndpointReference;
import com.sun.xml.ws.api.model.ParameterBinding;
import com.sun.xml.ws.api.model.wsdl.WSDLDescriptorKind;
import com.sun.xml.ws.api.model.wsdl.WSDLModel;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLBoundFault;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLBoundOperation;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLBoundPortType;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLFault;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLInput;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLMessage;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLModel;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLOperation;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLOutput;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLPart;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLPort;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLPortType;
import com.sun.xml.ws.api.model.wsdl.editable.EditableWSDLService;
import com.sun.xml.ws.api.server.Container;
import com.sun.xml.ws.api.server.ContainerResolver;
import com.sun.xml.ws.api.streaming.XMLStreamReaderFactory;
import com.sun.xml.ws.api.wsdl.parser.MetaDataResolver;
import com.sun.xml.ws.api.wsdl.parser.MetadataResolverFactory;
import com.sun.xml.ws.api.wsdl.parser.ServiceDescriptor;
import com.sun.xml.ws.api.wsdl.parser.WSDLParserExtension;
import com.sun.xml.ws.api.wsdl.parser.XMLEntityResolver;
import com.sun.xml.ws.api.wsdl.parser.XMLEntityResolver.Parser;
import com.sun.xml.ws.model.wsdl.*;
import com.sun.xml.ws.resources.ClientMessages;
import com.sun.xml.ws.resources.WsdlmodelMessages;
import com.sun.xml.ws.streaming.SourceReaderFactory;
import com.sun.xml.ws.streaming.TidyXMLStreamReader;
import com.sun.xml.ws.streaming.XMLStreamReaderUtil;
import com.sun.xml.ws.util.ServiceFinder;
import com.sun.xml.ws.util.xml.XmlUtil;
import com.sun.xml.ws.policy.jaxws.PolicyWSDLParserExtension;

import org.xml.sax.EntityResolver;
import org.xml.sax.SAXException;

import jakarta.jws.soap.SOAPBinding.Style;
import javax.xml.namespace.QName;
import javax.xml.stream.*;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import jakarta.xml.ws.Service;
import jakarta.xml.ws.WebServiceException;

import java.io.IOException;
import java.io.InputStream;
import java.io.FilterInputStream;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.*;
import java.util.logging.Logger;

/**
 * Parses WSDL and builds {@link com.sun.xml.ws.api.model.wsdl.WSDLModel}.
 *
 * @author Vivek Pandey
 * @author Rama Pulavarthi
 */
public class RuntimeWSDLParser {

    private final EditableWSDLModel wsdlDoc;
    /**
     * Target namespace URI of the WSDL that we are currently parsing.
     */
    private String targetNamespace;
    /**
     * System IDs of WSDLs that are already read.
     */
    private final Set importedWSDLs = new HashSet();
    /**
     * Must not be null.
     */
    private final XMLEntityResolver resolver;

    private final PolicyResolver policyResolver;

    /**
     * The {@link WSDLParserExtension}. Always non-null.
     */
    private final WSDLParserExtension extensionFacade;

    private final WSDLParserExtensionContextImpl context;

    List extensions;

    //Capture namespaces declared on the ancestors of wsa:EndpointReference, so that valid XmlStreamBuffer is created
    // from the EndpointReference fragment.
    Map wsdldef_nsdecl = new HashMap();
    Map service_nsdecl = new HashMap();
    Map port_nsdecl = new HashMap();

    /**
     * Parses the WSDL and gives WSDLModel. If wsdl parameter is null, then wsdlLoc is used to get the WSDL. If the WSDL
     * document could not be obtained then {@link MetadataResolverFactory} is tried to get the WSDL document, if not found
     * then as last option, if the wsdlLoc has no '?wsdl' as query parameter then it is tried by appending '?wsdl'.
     *
     * @param wsdlLoc
     *      Either this or {@code wsdl} parameter must be given.
     *      Null location means the system won't be able to resolve relative references in the WSDL,
     */
    public static WSDLModel parse(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, @NotNull EntityResolver resolver,
                                      boolean isClientSide, Container container,
                                      WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
        return parse(wsdlLoc, wsdlSource, resolver, isClientSide, container, Service.class, PolicyResolverFactory.create(),extensions);
    }

    /**
     * Parses the WSDL and gives WSDLModel. If wsdl parameter is null, then wsdlLoc is used to get the WSDL. If the WSDL
     * document could not be obtained then {@link MetadataResolverFactory} is tried to get the WSDL document, if not found
     * then as last option, if the wsdlLoc has no '?wsdl' as query parameter then it is tried by appending '?wsdl'.
     *
     * @param wsdlLoc
     *      Either this or {@code wsdl} parameter must be given.
     *      Null location means the system won't be able to resolve relative references in the WSDL,
     */
    public static WSDLModel parse(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, @NotNull EntityResolver resolver,
                                      boolean isClientSide, Container container, Class serviceClass,
                                      WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
        return parse(wsdlLoc, wsdlSource, resolver, isClientSide, container, serviceClass, PolicyResolverFactory.create(),extensions);
    }

    /**
     * Parses the WSDL and gives WSDLModel. If wsdl parameter is null, then wsdlLoc is used to get the WSDL. If the WSDL
     * document could not be obtained then {@link MetadataResolverFactory} is tried to get the WSDL document, if not found
     * then as last option, if the wsdlLoc has no '?wsdl' as query parameter then it is tried by appending '?wsdl'.
     *
     * @param wsdlLoc
     *      Either this or {@code wsdl} parameter must be given.
     *      Null location means the system won't be able to resolve relative references in the WSDL,
     */
    public static WSDLModel parse(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, @NotNull EntityResolver resolver,
                                      boolean isClientSide, Container container, @NotNull PolicyResolver policyResolver,
                                      WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
    	return parse(wsdlLoc, wsdlSource, resolver, isClientSide, container, Service.class, policyResolver, extensions);
    }
    
    /**
     * Parses the WSDL and gives WSDLModel. If wsdl parameter is null, then wsdlLoc is used to get the WSDL. If the WSDL
     * document could not be obtained then {@link MetadataResolverFactory} is tried to get the WSDL document, if not found
     * then as last option, if the wsdlLoc has no '?wsdl' as query parameter then it is tried by appending '?wsdl'.
     *
     * @param wsdlLoc
     *      Either this or {@code wsdl} parameter must be given.
     *      Null location means the system won't be able to resolve relative references in the WSDL,
     */
    public static WSDLModel parse(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, @NotNull EntityResolver resolver,
                                      boolean isClientSide, Container container, Class serviceClass, 
                                      @NotNull PolicyResolver policyResolver,
                                      WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
    	return parse(wsdlLoc, wsdlSource, resolver, isClientSide, container, serviceClass, policyResolver, false, extensions);
    }
    
    /**
     * Parses the WSDL and gives WSDLModel. If wsdl parameter is null, then wsdlLoc is used to get the WSDL. If the WSDL
     * document could not be obtained then {@link MetadataResolverFactory} is tried to get the WSDL document, if not found
     * then as last option, if the wsdlLoc has no '?wsdl' as query parameter then it is tried by appending '?wsdl'.
     *
     * @param wsdlLoc
     *      Either this or {@code wsdl} parameter must be given.
     *      Null location means the system won't be able to resolve relative references in the WSDL,
     */
    public static WSDLModel parse(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, @NotNull EntityResolver resolver,
                                      boolean isClientSide, Container container, Class serviceClass, 
                                      @NotNull PolicyResolver policyResolver,
                                      boolean isUseStreamFromEntityResolverWrapper,
                                      WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
        assert resolver != null;

        RuntimeWSDLParser wsdlParser = new RuntimeWSDLParser(wsdlSource.getSystemId(), new EntityResolverWrapper(resolver, isUseStreamFromEntityResolverWrapper), isClientSide, container, policyResolver, extensions);
        Parser parser;
        try{
            parser = wsdlParser.resolveWSDL(wsdlLoc, wsdlSource, serviceClass);
            if(!hasWSDLDefinitions(parser.parser)){
                throw new XMLStreamException(ClientMessages.RUNTIME_WSDLPARSER_INVALID_WSDL(parser.systemId,
                        WSDLConstants.QNAME_DEFINITIONS, parser.parser.getName(), parser.parser.getLocation()));
            }
        }catch(XMLStreamException e){
            //Try MEX if there is WSDLLoc available
            if(wsdlLoc == null)
                throw e;
            return tryWithMex(wsdlParser, wsdlLoc, resolver, isClientSide, container, e, serviceClass, policyResolver, extensions);

        }catch(IOException e){
            //Try MEX if there is WSDLLoc available
            if(wsdlLoc == null)
                throw e;
            return tryWithMex(wsdlParser, wsdlLoc, resolver, isClientSide, container, e, serviceClass, policyResolver, extensions);
        }
        wsdlParser.extensionFacade.start(wsdlParser.context);
        wsdlParser.parseWSDL(parser, false);
        wsdlParser.wsdlDoc.freeze();
        wsdlParser.extensionFacade.finished(wsdlParser.context);
        wsdlParser.extensionFacade.postFinished(wsdlParser.context);

        if(wsdlParser.wsdlDoc.getServices().isEmpty())
            throw new WebServiceException(ClientMessages.WSDL_CONTAINS_NO_SERVICE(wsdlLoc));

        return wsdlParser.wsdlDoc;
    }
    
    private static WSDLModel tryWithMex(@NotNull RuntimeWSDLParser wsdlParser, @NotNull URL wsdlLoc, @NotNull EntityResolver resolver, boolean isClientSide, Container container, Throwable e, Class serviceClass, PolicyResolver policyResolver, WSDLParserExtension... extensions) throws SAXException, XMLStreamException {
        ArrayList exceptions = new ArrayList();
        try {
            WSDLModel wsdlModel = wsdlParser.parseUsingMex(wsdlLoc, resolver, isClientSide, container, serviceClass, policyResolver,extensions);
            if(wsdlModel == null){
                throw new WebServiceException(ClientMessages.FAILED_TO_PARSE(wsdlLoc.toExternalForm(), e.getMessage()), e);
            }
            return wsdlModel;
        } catch (URISyntaxException e1) {
            exceptions.add(e);
            exceptions.add(e1);
        } catch(IOException e1){
            exceptions.add(e);
            exceptions.add(e1);
        }
        throw new InaccessibleWSDLException(exceptions);                
    }

    private WSDLModel parseUsingMex(@NotNull URL wsdlLoc, @NotNull EntityResolver resolver, boolean isClientSide, Container container, Class serviceClass, PolicyResolver policyResolver, WSDLParserExtension[] extensions) throws IOException, SAXException, XMLStreamException, URISyntaxException {
        //try MEX
        MetaDataResolver mdResolver = null;
        ServiceDescriptor serviceDescriptor = null;
        RuntimeWSDLParser wsdlParser = null;

        //Currently we try the first available MetadataResolverFactory that gives us a WSDL document
        for (MetadataResolverFactory resolverFactory : ServiceFinder.find(MetadataResolverFactory.class)) {
            mdResolver = resolverFactory.metadataResolver(resolver);
            serviceDescriptor = mdResolver.resolve(wsdlLoc.toURI());
            //we got the ServiceDescriptor, now break
            if (serviceDescriptor != null)
                break;
        }
        if (serviceDescriptor != null) {
            List wsdls = serviceDescriptor.getWSDLs();
            wsdlParser = new RuntimeWSDLParser(wsdlLoc.toExternalForm(), new MexEntityResolver(wsdls), isClientSide, container, policyResolver, extensions);
            wsdlParser.extensionFacade.start(wsdlParser.context);
            
            for(Source src: wsdls ) {
                String systemId = src.getSystemId();
                Parser parser = wsdlParser.resolver.resolveEntity(null, systemId);
                wsdlParser.parseWSDL(parser, false);
            }
        }
        //Incase that mex is not present or it couldn't get the metadata, try by appending ?wsdl and give
        // it a last shot else fail
        if ((mdResolver == null || serviceDescriptor == null) && (wsdlLoc.getProtocol().equals("http") || wsdlLoc.getProtocol().equals("https")) && (wsdlLoc.getQuery() == null)) {
            String urlString = wsdlLoc.toExternalForm();
            urlString += "?wsdl";
            wsdlLoc = new URL(urlString);
            wsdlParser = new RuntimeWSDLParser(wsdlLoc.toExternalForm(),new EntityResolverWrapper(resolver), isClientSide, container, policyResolver, extensions);
            wsdlParser.extensionFacade.start(wsdlParser.context);
            Parser parser = resolveWSDL(wsdlLoc, new StreamSource(wsdlLoc.toExternalForm()), serviceClass);
            wsdlParser.parseWSDL(parser, false);
        }

        if(wsdlParser == null)
            return null;

        wsdlParser.wsdlDoc.freeze();
        wsdlParser.extensionFacade.finished(wsdlParser.context);
        wsdlParser.extensionFacade.postFinished(wsdlParser.context);
        return wsdlParser.wsdlDoc;
    }

    private static boolean hasWSDLDefinitions(XMLStreamReader reader) {
        XMLStreamReaderUtil.nextElementContent(reader);
        return reader.getName().equals(WSDLConstants.QNAME_DEFINITIONS);
    }

    public static WSDLModel parse(XMLEntityResolver.Parser wsdl, XMLEntityResolver resolver, boolean isClientSide, Container container, PolicyResolver policyResolver, WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
        assert resolver != null;
        RuntimeWSDLParser parser = new RuntimeWSDLParser( wsdl.systemId.toExternalForm(), resolver, isClientSide, container, policyResolver, extensions);
        parser.extensionFacade.start(parser.context);
        parser.parseWSDL(wsdl, false);
        parser.wsdlDoc.freeze();
        parser.extensionFacade.finished(parser.context);
        parser.extensionFacade.postFinished(parser.context);
        return parser.wsdlDoc;
    }

    public static WSDLModel parse(XMLEntityResolver.Parser wsdl, XMLEntityResolver resolver, boolean isClientSide, Container container, WSDLParserExtension... extensions) throws IOException, XMLStreamException, SAXException {
        assert resolver != null;
        RuntimeWSDLParser parser = new RuntimeWSDLParser( wsdl.systemId.toExternalForm(), resolver, isClientSide, container, PolicyResolverFactory.create(), extensions);
        parser.extensionFacade.start(parser.context);
        parser.parseWSDL(wsdl, false);
        parser.wsdlDoc.freeze();
        parser.extensionFacade.finished(parser.context);
        parser.extensionFacade.postFinished(parser.context);
        return parser.wsdlDoc;
    }

    private RuntimeWSDLParser(@NotNull String sourceLocation, XMLEntityResolver resolver, boolean isClientSide, Container container, PolicyResolver policyResolver, WSDLParserExtension... extensions) {
        this.wsdlDoc = sourceLocation!=null ? new WSDLModelImpl(sourceLocation) : new WSDLModelImpl();
        this.resolver = resolver;
        this.policyResolver = policyResolver;
        this.extensions = new ArrayList();
        this.context = new WSDLParserExtensionContextImpl(wsdlDoc, isClientSide, container, policyResolver);

        boolean isPolicyExtensionFound = false;
        for (WSDLParserExtension e : extensions) {
        	if (e instanceof com.sun.xml.ws.api.wsdl.parser.PolicyWSDLParserExtension)
        		isPolicyExtensionFound = true;
            register(e);
        }

        // register handlers for default extensions
        if (!isPolicyExtensionFound)
        	register(new PolicyWSDLParserExtension());
        register(new MemberSubmissionAddressingWSDLParserExtension());
        register(new W3CAddressingWSDLParserExtension());
        register(new W3CAddressingMetadataWSDLParserExtension());

        this.extensionFacade =  new WSDLParserExtensionFacade(this.extensions.toArray(new WSDLParserExtension[0]));
    }

    private Parser resolveWSDL(@Nullable URL wsdlLoc, @NotNull Source wsdlSource, Class serviceClass) throws IOException, SAXException, XMLStreamException {
        String systemId = wsdlSource.getSystemId();

        XMLEntityResolver.Parser parser = resolver.resolveEntity(null, systemId);
        if (parser == null && wsdlLoc != null) {
        	String exForm = wsdlLoc.toExternalForm();
            parser = resolver.resolveEntity(null, exForm);

            if (parser == null && serviceClass != null) {
            	URL ru = serviceClass.getResource(".");
            	if (ru != null) {
            		String ruExForm = ru.toExternalForm();
	            	if (exForm.startsWith(ruExForm)) {
	            		parser = resolver.resolveEntity(null, exForm.substring(ruExForm.length()));
	            	}
            	}
            }
        }
        if (parser == null) {
            //If a WSDL source is provided that is known to be readable, then
            //prioritize that over the URL - this avoids going over the network
            //an additional time if a valid WSDL Source is provided - Deva Sagar 09/20/2011
            if (isKnownReadableSource(wsdlSource)) {
                parser = new Parser(wsdlLoc, createReader(wsdlSource));
            } else if (wsdlLoc != null) {
                parser = new Parser(wsdlLoc, createReader(wsdlLoc, serviceClass));
            }

            //parser could still be null if isKnownReadableSource returns
            //false and wsdlLoc is also null. Fall back to using Source based 
            //parser since Source is not null
            if (parser == null) {
                parser = new Parser(wsdlLoc, createReader(wsdlSource));
            }
        }
        return parser;
    }

    private boolean isKnownReadableSource(Source wsdlSource) {
		if (wsdlSource instanceof StreamSource) {
			return (((StreamSource) wsdlSource).getInputStream() != null ||
					((StreamSource) wsdlSource).getReader() != null);
		} else {
			return false;
		}
	}

    private XMLStreamReader createReader(@NotNull Source src) throws XMLStreamException {
        return new TidyXMLStreamReader(SourceReaderFactory.createSourceReader(src, true), null);
    }

    private void parseImport(@NotNull URL wsdlLoc) throws XMLStreamException, IOException, SAXException {
        String systemId = wsdlLoc.toExternalForm();
        XMLEntityResolver.Parser parser = resolver.resolveEntity(null, systemId);
        if (parser == null) {
            parser = new Parser(wsdlLoc, createReader(wsdlLoc));
        }
        parseWSDL(parser, true);
    }

    private void parseWSDL(Parser parser, boolean imported) throws XMLStreamException, IOException, SAXException {
        XMLStreamReader reader = parser.parser;
        try {
            // avoid processing the same WSDL twice.
            // if no system ID is given, the check won't work
            if (parser.systemId != null && !importedWSDLs.add(parser.systemId.toExternalForm()))
                return;

            if(reader.getEventType() == XMLStreamConstants.START_DOCUMENT)
                XMLStreamReaderUtil.nextElementContent(reader);
            if (WSDLConstants.QNAME_DEFINITIONS.equals(reader.getName())) {
                readNSDecl(wsdldef_nsdecl, reader);
            }
            if (reader.getEventType()!= XMLStreamConstants.END_DOCUMENT && reader.getName().equals(WSDLConstants.QNAME_SCHEMA)) {
                if (imported) {
                    // wsdl:import could be a schema. Relaxing BP R2001 requirement.
                    LOGGER.warning(WsdlmodelMessages.WSDL_IMPORT_SHOULD_BE_WSDL(parser.systemId));
                    return;
                }
            }

            //get the targetNamespace of the service
            String tns = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_TNS);

            final String oldTargetNamespace = targetNamespace;
            targetNamespace = tns;

            while (XMLStreamReaderUtil.nextElementContent(reader) !=
                    XMLStreamConstants.END_ELEMENT) {
                if (reader.getEventType() == XMLStreamConstants.END_DOCUMENT)
                    break;

                QName name = reader.getName();
                if (WSDLConstants.QNAME_IMPORT.equals(name)) {
                    parseImport(parser.systemId, reader);
                } else if (WSDLConstants.QNAME_MESSAGE.equals(name)) {
                    parseMessage(reader);
                } else if (WSDLConstants.QNAME_PORT_TYPE.equals(name)) {
                    parsePortType(reader);
                } else if (WSDLConstants.QNAME_BINDING.equals(name)) {
                    parseBinding(reader);
                } else if (WSDLConstants.QNAME_SERVICE.equals(name)) {
                    parseService(reader);
                } else {
                    extensionFacade.definitionsElements(reader);
                }
            }
            targetNamespace = oldTargetNamespace;
        } finally {
            this.wsdldef_nsdecl = new HashMap();
            reader.close();
        }
    }

    private void parseService(XMLStreamReader reader) {
        service_nsdecl.putAll(wsdldef_nsdecl);
        readNSDecl(service_nsdecl,reader);

        String serviceName = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
        EditableWSDLService service = new WSDLServiceImpl(reader,wsdlDoc,new QName(targetNamespace, serviceName));
        extensionFacade.serviceAttributes(service, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (WSDLConstants.QNAME_PORT.equals(name)) {
                parsePort(reader, service);
                if (reader.getEventType() != XMLStreamConstants.END_ELEMENT) {
                    XMLStreamReaderUtil.next(reader);
                }
            } else {
                extensionFacade.serviceElements(service, reader);
            }
        }
        wsdlDoc.addService(service);
        service_nsdecl =  new HashMap();
    }

    private void parsePort(XMLStreamReader reader, EditableWSDLService service) {
        port_nsdecl.putAll(service_nsdecl);
        readNSDecl(port_nsdecl,reader);

        String portName = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
        String binding = ParserUtil.getMandatoryNonEmptyAttribute(reader, "binding");

        QName bindingName = ParserUtil.getQName(reader, binding);
        QName portQName = new QName(service.getName().getNamespaceURI(), portName);
        EditableWSDLPort port = new WSDLPortImpl(reader,service, portQName, bindingName);

        extensionFacade.portAttributes(port, reader);

        String location;
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (SOAPConstants.QNAME_ADDRESS.equals(name) || SOAPConstants.QNAME_SOAP12ADDRESS.equals(name)) {
                location = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_LOCATION);
                if (location != null) {
                    try {
                        port.setAddress(new EndpointAddress(location));
                    } catch (URISyntaxException e) {
                        //Lets not throw any exception, latter on it should be thrown when invocation happens. At this
                        // time user has option to set the endopint address using request contexxt property.
                    }
                }
                XMLStreamReaderUtil.next(reader);
            } else if (AddressingVersion.W3C.nsUri.equals(name.getNamespaceURI()) &&
                    "EndpointReference".equals(name.getLocalPart())) {
                try {
                    StreamReaderBufferCreator creator = new StreamReaderBufferCreator(new MutableXMLStreamBuffer());
                    XMLStreamBuffer eprbuffer = new XMLStreamBufferMark(port_nsdecl, creator);
                    creator.createElementFragment(reader, false);

                    WSEndpointReference wsepr = new WSEndpointReference(eprbuffer, AddressingVersion.W3C);
                    //wsepr.toSpec().writeTo(new StreamResult(System.out));
                    port.setEPR(wsepr);
                    /* XMLStreamBuffer.createNewBufferFromXMLStreamReader(reader) called from inside WSEndpointReference()
                       consumes the complete EPR infoset and moves to the next element. This breaks the normal wsdl parser
                       processing where it expects anyone reading the infoset to move to the end of the element that its reading
                       and not to the next element.
                     */
                    if(reader.getEventType() == XMLStreamConstants.END_ELEMENT && reader.getName().equals(WSDLConstants.QNAME_PORT))
                        break;
                } catch (XMLStreamException e) {
                    throw new WebServiceException(e);
                }
            } else {

                extensionFacade.portElements(port, reader);
            }
        }
        if (port.getAddress() == null) {
            try {
                port.setAddress(new EndpointAddress(""));
            } catch (URISyntaxException e) {
                //Lets not throw any exception, latter on it should be thrown when invocation happens. At this
                //time user has option to set the endopint address using request contexxt property.
            }
        }
        service.put(portQName, port);
        port_nsdecl =new HashMap();                        
    }

    private void parseBinding(XMLStreamReader reader) {
        String bindingName = ParserUtil.getMandatoryNonEmptyAttribute(reader, "name");
        String portTypeName = ParserUtil.getMandatoryNonEmptyAttribute(reader, "type");
        if ((bindingName == null) || (portTypeName == null)) {
            //TODO: throw exception?
            //
            //  wsdl:binding element for now
            XMLStreamReaderUtil.skipElement(reader);
            return;
        }
        EditableWSDLBoundPortType binding = new WSDLBoundPortTypeImpl(reader,wsdlDoc, new QName(targetNamespace, bindingName),
                ParserUtil.getQName(reader, portTypeName));
        extensionFacade.bindingAttributes(binding, reader);

        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (WSDLConstants.NS_SOAP_BINDING.equals(name)) {
                String transport = reader.getAttributeValue(null, WSDLConstants.ATTR_TRANSPORT);
                binding.setBindingId(createBindingId(transport, SOAPVersion.SOAP_11));

                String style = reader.getAttributeValue(null, "style");

                if ((style != null) && (style.equals("rpc"))) {
                    binding.setStyle(Style.RPC);
                } else {
                    binding.setStyle(Style.DOCUMENT);
                }
                goToEnd(reader);
            } else if (WSDLConstants.NS_SOAP12_BINDING.equals(name)) {
                String transport = reader.getAttributeValue(null, WSDLConstants.ATTR_TRANSPORT);
                binding.setBindingId(createBindingId(transport, SOAPVersion.SOAP_12));

                String style = reader.getAttributeValue(null, "style");
                if ((style != null) && (style.equals("rpc"))) {
                    binding.setStyle(Style.RPC);
                } else {
                    binding.setStyle(Style.DOCUMENT);
                }
                goToEnd(reader);
            } else if (WSDLConstants.QNAME_OPERATION.equals(name)) {
                parseBindingOperation(reader, binding);
            } else {
                extensionFacade.bindingElements(binding, reader);
            }
        }
    }
    
    private static BindingID createBindingId(String transport, SOAPVersion soapVersion) {
        if (!transport.equals(SOAPConstants.URI_SOAP_TRANSPORT_HTTP)) {
            for( BindingIDFactory f : ServiceFinder.find(BindingIDFactory.class) ) {
                BindingID bindingId = f.create(transport, soapVersion);
                if(bindingId!=null) {
                    return bindingId;
                }
            }
        }
        return soapVersion.equals(SOAPVersion.SOAP_11)?BindingID.SOAP11_HTTP:BindingID.SOAP12_HTTP;
    }


    private void parseBindingOperation(XMLStreamReader reader, EditableWSDLBoundPortType binding) {
        String bindingOpName = ParserUtil.getMandatoryNonEmptyAttribute(reader, "name");
        if (bindingOpName == null) {
            //TODO: throw exception?
            //skip wsdl:binding element for now
            XMLStreamReaderUtil.skipElement(reader);
            return;
        }

        QName opName = new QName(binding.getPortTypeName().getNamespaceURI(), bindingOpName);
        EditableWSDLBoundOperation bindingOp = new WSDLBoundOperationImpl(reader,binding, opName);
        binding.put(opName, bindingOp);
        extensionFacade.bindingOperationAttributes(bindingOp, reader);

        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            String style = null;
            if (WSDLConstants.QNAME_INPUT.equals(name)) {
                parseInputBinding(reader, bindingOp);
            } else if (WSDLConstants.QNAME_OUTPUT.equals(name)) {
                parseOutputBinding(reader, bindingOp);
            } else if (WSDLConstants.QNAME_FAULT.equals(name)) {
                parseFaultBinding(reader, bindingOp);
            } else if (SOAPConstants.QNAME_OPERATION.equals(name) ||
                    SOAPConstants.QNAME_SOAP12OPERATION.equals(name)) {
                style = reader.getAttributeValue(null, "style");
                String soapAction = reader.getAttributeValue(null, "soapAction");

                if (soapAction != null)
                    bindingOp.setSoapAction(soapAction);

                goToEnd(reader);
            } else {
                extensionFacade.bindingOperationElements(bindingOp, reader);
            }
            /*
               If style attribute is present set it otherwise set the style as defined
               on the  element
             */
            if (style != null) {
                if (style.equals("rpc"))
                    bindingOp.setStyle(Style.RPC);
                else
                    bindingOp.setStyle(Style.DOCUMENT);
            } else {
                bindingOp.setStyle(binding.getStyle());
            }            
        }
    }

    private void parseInputBinding(XMLStreamReader reader, EditableWSDLBoundOperation bindingOp) {
        boolean bodyFound = false;
        extensionFacade.bindingOperationInputAttributes(bindingOp, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if ((SOAPConstants.QNAME_BODY.equals(name) || SOAPConstants.QNAME_SOAP12BODY.equals(name)) && !bodyFound) {
                bodyFound = true;
                bindingOp.setInputExplicitBodyParts(parseSOAPBodyBinding(reader, bindingOp, BindingMode.INPUT));
                goToEnd(reader);
            } else if ((SOAPConstants.QNAME_HEADER.equals(name) || SOAPConstants.QNAME_SOAP12HEADER.equals(name))) {
                parseSOAPHeaderBinding(reader, bindingOp.getInputParts());
            } else if (MIMEConstants.QNAME_MULTIPART_RELATED.equals(name)) {
                parseMimeMultipartBinding(reader, bindingOp, BindingMode.INPUT);
            } else {
                extensionFacade.bindingOperationInputElements(bindingOp, reader);
            }
        }
    }

    private void parseOutputBinding(XMLStreamReader reader, EditableWSDLBoundOperation bindingOp) {
        boolean bodyFound = false;
        extensionFacade.bindingOperationOutputAttributes(bindingOp, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if ((SOAPConstants.QNAME_BODY.equals(name) || SOAPConstants.QNAME_SOAP12BODY.equals(name)) && !bodyFound) {
                bodyFound = true;
                bindingOp.setOutputExplicitBodyParts(parseSOAPBodyBinding(reader, bindingOp, BindingMode.OUTPUT));
                goToEnd(reader);
            } else if ((SOAPConstants.QNAME_HEADER.equals(name) || SOAPConstants.QNAME_SOAP12HEADER.equals(name))) {
                parseSOAPHeaderBinding(reader, bindingOp.getOutputParts());
            } else if (MIMEConstants.QNAME_MULTIPART_RELATED.equals(name)) {
                parseMimeMultipartBinding(reader, bindingOp, BindingMode.OUTPUT);
            } else {
                extensionFacade.bindingOperationOutputElements(bindingOp, reader);
            }
        }
    }

    private void parseFaultBinding(XMLStreamReader reader, EditableWSDLBoundOperation bindingOp) {
        String faultName = ParserUtil.getMandatoryNonEmptyAttribute(reader, "name");
        EditableWSDLBoundFault wsdlBoundFault = new WSDLBoundFaultImpl(reader, faultName, bindingOp);
        bindingOp.addFault(wsdlBoundFault);

        extensionFacade.bindingOperationFaultAttributes(wsdlBoundFault, reader);

        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            extensionFacade.bindingOperationFaultElements(wsdlBoundFault, reader);
        }
    }

    private enum BindingMode {
        INPUT, OUTPUT, FAULT}

    private static boolean parseSOAPBodyBinding(XMLStreamReader reader, EditableWSDLBoundOperation op, BindingMode mode) {
        String namespace = reader.getAttributeValue(null, "namespace");
        if (mode == BindingMode.INPUT) {
            op.setRequestNamespace(namespace);
            return parseSOAPBodyBinding(reader, op.getInputParts());
        }
        //resp
        op.setResponseNamespace(namespace);
        return parseSOAPBodyBinding(reader, op.getOutputParts());
    }

    /**
     * Returns true if body has explicit parts declaration
     */
    private static boolean parseSOAPBodyBinding(XMLStreamReader reader, Map parts) {
        String partsString = reader.getAttributeValue(null, "parts");
        if (partsString != null) {
            List partsList = XmlUtil.parseTokenList(partsString);
            if (partsList.isEmpty()) {
                parts.put(" ", ParameterBinding.BODY);
            } else {
                for (String part : partsList) {
                    parts.put(part, ParameterBinding.BODY);
                }
            }
            return true;
        }
        return false;
    }

    private static void parseSOAPHeaderBinding(XMLStreamReader reader, Map parts) {
        String part = reader.getAttributeValue(null, "part");
        //if(part == null| part.equals("")||message == null || message.equals("")){
        if (part == null || part.equals("")) {
            return;
        }

        //lets not worry about message attribute for now, probably additional headers wont be there
        //String message = reader.getAttributeValue(null, "message");
        //QName msgName = ParserUtil.getQName(reader, message);
        parts.put(part, ParameterBinding.HEADER);
        goToEnd(reader);
    }


    private static void parseMimeMultipartBinding(XMLStreamReader reader, EditableWSDLBoundOperation op, BindingMode mode) {
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (MIMEConstants.QNAME_PART.equals(name)) {
                parseMIMEPart(reader, op, mode);
            } else {
                XMLStreamReaderUtil.skipElement(reader);
            }
        }
    }

    private static void parseMIMEPart(XMLStreamReader reader, EditableWSDLBoundOperation op, BindingMode mode) {
        boolean bodyFound = false;
        Map parts = null;
        if (mode == BindingMode.INPUT) {
            parts = op.getInputParts();
        } else if (mode == BindingMode.OUTPUT) {
            parts = op.getOutputParts();
        } else if (mode == BindingMode.FAULT) {
            parts = op.getFaultParts();
        }
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (SOAPConstants.QNAME_BODY.equals(name) && !bodyFound) {
                bodyFound = true;
                parseSOAPBodyBinding(reader, op, mode);
                XMLStreamReaderUtil.next(reader);
            } else if (SOAPConstants.QNAME_HEADER.equals(name)) {
                bodyFound = true;
                parseSOAPHeaderBinding(reader, parts);
                XMLStreamReaderUtil.next(reader);
            } else if (MIMEConstants.QNAME_CONTENT.equals(name)) {
                String part = reader.getAttributeValue(null, "part");
                String type = reader.getAttributeValue(null, "type");
                if ((part == null) || (type == null)) {
                    XMLStreamReaderUtil.skipElement(reader);
                    continue;
                }
                ParameterBinding sb = ParameterBinding.createAttachment(type);
                if (parts != null && sb != null && part != null)
                    parts.put(part, sb);
                XMLStreamReaderUtil.next(reader);
            } else {
                XMLStreamReaderUtil.skipElement(reader);
            }
        }
    }

    protected void parseImport(@Nullable URL baseURL, XMLStreamReader reader) throws IOException, SAXException, XMLStreamException {
        // expand to the absolute URL of the imported WSDL.
        String importLocation =
                ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_LOCATION);
        URL importURL;
        if(baseURL!=null)
            importURL = new URL(baseURL, importLocation);
        else // no base URL. this better be absolute
            importURL = new URL(importLocation);
        parseImport(importURL);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            XMLStreamReaderUtil.skipElement(reader);
        }
    }

    private void parsePortType(XMLStreamReader reader) {
        String portTypeName = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
        if (portTypeName == null) {
            //TODO: throw exception?
            //skip wsdl:portType element for now
            XMLStreamReaderUtil.skipElement(reader);
            return;
        }
        EditableWSDLPortType portType = new WSDLPortTypeImpl(reader,wsdlDoc, new QName(targetNamespace, portTypeName));
        extensionFacade.portTypeAttributes(portType, reader);
        wsdlDoc.addPortType(portType);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (WSDLConstants.QNAME_OPERATION.equals(name)) {
                parsePortTypeOperation(reader, portType);
            } else {
                extensionFacade.portTypeElements(portType, reader);
            }
        }
    }


    private void parsePortTypeOperation(XMLStreamReader reader, EditableWSDLPortType portType) {
        String operationName = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
        if (operationName == null) {
            //TODO: throw exception?
            //skip wsdl:portType element for now
            XMLStreamReaderUtil.skipElement(reader);
            return;
        }

        QName operationQName = new QName(portType.getName().getNamespaceURI(), operationName);
        EditableWSDLOperation operation = new WSDLOperationImpl(reader,portType, operationQName);
        extensionFacade.portTypeOperationAttributes(operation, reader);
        String parameterOrder = ParserUtil.getAttribute(reader, "parameterOrder");
        operation.setParameterOrder(parameterOrder);
        portType.put(operationName, operation);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (name.equals(WSDLConstants.QNAME_INPUT)) {
                parsePortTypeOperationInput(reader, operation);
            } else if (name.equals(WSDLConstants.QNAME_OUTPUT)) {
                parsePortTypeOperationOutput(reader, operation);
            } else if (name.equals(WSDLConstants.QNAME_FAULT)) {
                parsePortTypeOperationFault(reader, operation);
            } else {
                extensionFacade.portTypeOperationElements(operation, reader);
            }
        }
    }


    private void parsePortTypeOperationFault(XMLStreamReader reader, EditableWSDLOperation operation) {
        String msg = ParserUtil.getMandatoryNonEmptyAttribute(reader, "message");
        QName msgName = ParserUtil.getQName(reader, msg);
        String name = ParserUtil.getMandatoryNonEmptyAttribute(reader, "name");
        EditableWSDLFault fault = new WSDLFaultImpl(reader,name, msgName, operation);
        operation.addFault(fault);
        extensionFacade.portTypeOperationFaultAttributes(fault, reader);
        extensionFacade.portTypeOperationFault(operation, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            extensionFacade.portTypeOperationFaultElements(fault, reader);
        }
    }

    private void parsePortTypeOperationInput(XMLStreamReader reader, EditableWSDLOperation operation) {
        String msg = ParserUtil.getMandatoryNonEmptyAttribute(reader, "message");
        QName msgName = ParserUtil.getQName(reader, msg);
        String name = ParserUtil.getAttribute(reader, "name");
        EditableWSDLInput input = new WSDLInputImpl(reader, name, msgName, operation);
        operation.setInput(input);
        extensionFacade.portTypeOperationInputAttributes(input, reader);
        extensionFacade.portTypeOperationInput(operation, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            extensionFacade.portTypeOperationInputElements(input, reader);
        }
    }

    private void parsePortTypeOperationOutput(XMLStreamReader reader, EditableWSDLOperation operation) {
        String msg = ParserUtil.getAttribute(reader, "message");
        QName msgName = ParserUtil.getQName(reader, msg);
        String name = ParserUtil.getAttribute(reader, "name");
        EditableWSDLOutput output = new WSDLOutputImpl(reader,name, msgName, operation);
        operation.setOutput(output);
        extensionFacade.portTypeOperationOutputAttributes(output, reader);
        extensionFacade.portTypeOperationOutput(operation, reader);
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            extensionFacade.portTypeOperationOutputElements(output, reader);
        }
    }

    private void parseMessage(XMLStreamReader reader) {
        String msgName = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
        EditableWSDLMessage msg = new WSDLMessageImpl(reader,new QName(targetNamespace, msgName));
        extensionFacade.messageAttributes(msg, reader);
        int partIndex = 0;
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            QName name = reader.getName();
            if (WSDLConstants.QNAME_PART.equals(name)) {
                String part = ParserUtil.getMandatoryNonEmptyAttribute(reader, WSDLConstants.ATTR_NAME);
                String desc = null;
                int index = reader.getAttributeCount();
                WSDLDescriptorKind kind = WSDLDescriptorKind.ELEMENT;
                for (int i = 0; i < index; i++) {
                    QName descName = reader.getAttributeName(i);
                    if (descName.getLocalPart().equals("element"))
                        kind = WSDLDescriptorKind.ELEMENT;
                    else if (descName.getLocalPart().equals("type"))
                        kind = WSDLDescriptorKind.TYPE;

                    if (descName.getLocalPart().equals("element") || descName.getLocalPart().equals("type")) {
                        desc = reader.getAttributeValue(i);
                        break;
                    }
                }
                if (desc != null) {
                    EditableWSDLPart wsdlPart = new WSDLPartImpl(reader, part, partIndex, new WSDLPartDescriptorImpl(reader,ParserUtil.getQName(reader, desc), kind));
                    msg.add(wsdlPart);
                }
                if (reader.getEventType() != XMLStreamConstants.END_ELEMENT)
                    goToEnd(reader);
            } else {
                extensionFacade.messageElements(msg, reader);
            }
        }
        wsdlDoc.addMessage(msg);
        if (reader.getEventType() != XMLStreamConstants.END_ELEMENT)
            goToEnd(reader);
    }

    private static void goToEnd(XMLStreamReader reader) {
        while (XMLStreamReaderUtil.nextElementContent(reader) != XMLStreamConstants.END_ELEMENT) {
            XMLStreamReaderUtil.skipElement(reader);
        }
    }

    /**
     * Make sure to return a "fresh" reader each time it is called because
     * more than one active reader may be needed within a single thread
     * to parse a WSDL file.
     */
    private static XMLStreamReader createReader(URL wsdlLoc) throws IOException, XMLStreamException {
        return createReader(wsdlLoc, null);
    }
    
    /**
     * Make sure to return a "fresh" reader each time it is called because
     * more than one active reader may be needed within a single thread
     * to parse a WSDL file.
     */
    private static XMLStreamReader createReader(URL wsdlLoc, Class serviceClass) throws IOException, XMLStreamException {
        InputStream stream;
        try {
        	stream = wsdlLoc.openStream();
        } catch (IOException io) {
        	out:
        	do {
	        	if (serviceClass != null) {
	        		WSDLLocator locator = ContainerResolver.getInstance().getContainer().getSPI(WSDLLocator.class);
	        		if (locator != null) {
		        	  String exForm = wsdlLoc.toExternalForm();
		                  URL ru = serviceClass.getResource(".");
	        		  String loc = wsdlLoc.getPath();
                                  if (ru != null) {
                                    String ruExForm = ru.toExternalForm();
                                    if (exForm.startsWith(ruExForm)) {
                                      loc = exForm.substring(ruExForm.length());
                                    }
                                  }
	        		  wsdlLoc = locator.locateWSDL(serviceClass, loc);
	        		  if (wsdlLoc != null) {
						stream = new FilterInputStream(wsdlLoc.openStream()) {
						    boolean closed;
						
						    @Override
						    public void close() throws IOException {
						        if (!closed) {
						            closed = true;
						            byte[] buf = new byte[8192];
						            while(read(buf) != -1);
						            super.close();
						        }
						    }
						};
	        			  break out;
	        		  }
	        		}
	        	}
	        	throw io;
        	} while(true);
        }
        
        return new TidyXMLStreamReader(XMLStreamReaderFactory.create(wsdlLoc.toExternalForm(), stream, false), stream);
    }

    private void register(WSDLParserExtension e) {
        // protect JAX-WS RI from broken parser extension
        extensions.add(new FoolProofParserExtension(e));
    }

    /**
     * Reads the namespace declarations from the reader's current position in to the map. The reader is expected to be
     * on the start element.
     *
     */
    private static void readNSDecl(Map ns_map, XMLStreamReader reader) {
        if (reader.getNamespaceCount() > 0) {
            for (int i = 0; i < reader.getNamespaceCount(); i++) {
                ns_map.put(reader.getNamespacePrefix(i), reader.getNamespaceURI(i));
            }
        }
    }

    private static final Logger LOGGER = Logger.getLogger(RuntimeWSDLParser.class.getName());
}




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