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 * The contents of this file are subject to the terms of either the GNU
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.admin.cli.resources;

import org.glassfish.resource.common.Resource;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;  
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;  
import org.xml.sax.InputSource;
import org.xml.sax.ErrorHandler;
import org.xml.sax.EntityResolver;

import java.io.*;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;

import com.sun.enterprise.util.SystemPropertyConstants;


//i18n import
import com.sun.enterprise.util.i18n.StringManager;

import java.util.*;

import org.xml.sax.ext.LexicalHandler;

import org.glassfish.api.I18n;
import static org.glassfish.resource.common.ResourceConstants.*;

/**
 * This Class reads the Properties (resources) from the xml file supplied 
 * to constructor
 */
@I18n("resources.parser")
public class ResourcesXMLParser implements EntityResolver
{

    private File resourceFile = null;
    private Document document;
    private List vResources;
    private boolean isDoctypePresent = false;
    /* list of resources that needs to be created prior to module deployment. This 
     * includes all non-Connector resources and resource-adapter-config
     */
//    private List connectorResources;
    
    /* Includes all connector resources in the order in which the resources needs
      to be created */
//    private List nonConnectorResources;
    
    // i18n StringManager
    private static StringManager localStrings =
        StringManager.getManager( ResourcesXMLParser.class );
    
    private static final int NONCONNECTOR = 2;
    private static final int CONNECTOR = 1;

    private static final Logger _logger  = Logger.getLogger(ResourcesXMLParser.class.getName());

    private static final String SUN_RESOURCES = "sun-resources";

    public static final String JAVA_APP_SCOPE_PREFIX = "java:app/";
    public static final String JAVA_COMP_SCOPE_PREFIX = "java:comp/";
    public static final String JAVA_MODULE_SCOPE_PREFIX = "java:module/";
    public static final String JAVA_GLOBAL_SCOPE_PREFIX = "java:global/";

    /**
     * List of naming scopes
     */
    public static final List namingScopes = Collections.unmodifiableList(
            Arrays.asList(
                JAVA_APP_SCOPE_PREFIX,
                JAVA_COMP_SCOPE_PREFIX,
                JAVA_MODULE_SCOPE_PREFIX,
                JAVA_GLOBAL_SCOPE_PREFIX
            ));

    private static final String publicID_sjsas90 = "Sun Microsystems, Inc.//DTD Application Server 9.0 Resource Definitions";
    private static final String publicID_ges30 = "Sun Microsystems, Inc.//DTD GlassFish Application Server 3.0 Resource Definitions";
    private static final String publicID_ges31 = "GlassFish.org//DTD GlassFish Application Server 3.1 Resource Definitions";

    private static final String DTD_1_5 = "glassfish-resources_1_5.dtd";
    private static final String DTD_1_4 = "sun-resources_1_4.dtd";
    private static final String DTD_1_3 = "sun-resources_1_3.dtd";
    private static final String DTD_1_2 = "sun-resources_1_2.dtd";
    private static final String DTD_1_1 = "sun-resources_1_1.dtd";
    private static final String DTD_1_0 = "sun-resources_1_0.dtd";
    
    private static final List systemIDs = Collections.unmodifiableList(
            Arrays.asList(
                    DTD_1_5,
                    DTD_1_4,
                    DTD_1_3,
                    DTD_1_2,
                    DTD_1_1,
                    DTD_1_0
            ));


    /** Creates new ResourcesXMLParser */
    public ResourcesXMLParser(File resourceFile) throws Exception {
        this.resourceFile = resourceFile;
        initProperties();
        vResources = new ArrayList();
        String scope = "";
        generateResourceObjects(scope);
    }

    /** Creates new ResourcesXMLParser */
    public ResourcesXMLParser(File resourceFile, String scope) throws Exception {
        this.resourceFile = resourceFile;
        initProperties();
        vResources = new ArrayList();
        generateResourceObjects(scope);
    }

    /**
     *Parse the XML Properties file and populate it into document object
     */
    private void initProperties() throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        BufferedInputStream bis = null;
        FileInputStream fis = null;
        try {
            AddResourcesErrorHandler  errorHandler = new AddResourcesErrorHandler();
            factory.setValidating(true);
            DocumentBuilder builder = factory.newDocumentBuilder();
            builder.setEntityResolver(this);
            builder.setErrorHandler(errorHandler);
            Object args[] = new Object[]{resourceFile};
            if (resourceFile == null) {
		String msg = localStrings.getStringWithDefault( "resources.parser.no_resource_file",
                                                        "Resource file ({0} does not exist",
                                                        args );
                throw new Exception( msg );
            }
            fis = new FileInputStream(resourceFile);
            InputSource is = new InputSource(fis);
            document = builder.parse(is);
            detectDeprecatedDescriptor();
        }/*catch(SAXParseException saxpe){
            throw new Exception(saxpe.getLocalizedMessage());
        }*/catch (SAXException sxe) {
            //This check is introduced to check if DOCTYPE is present in sun-resources.xml
            //And throw proper error message if DOCTYPE is missing
            try {
                SAXParserFactory spf = SAXParserFactory.newInstance();
                SAXParser sp = spf.newSAXParser();
                sp.setProperty("http://xml.org/sax/properties/lexical-handler", new MyLexicalHandler());
                //we need to open the same file. Close it to be safe.
                if(fis != null){
                    try{
                        fis.close();
                        fis = null;
                    }catch(Exception e){
                        //ignore
                    }
                }
                fis = new FileInputStream(resourceFile);
                sp.getXMLReader().parse(new InputSource(fis));
            } catch (ParserConfigurationException ex) {
            } catch (SAXException ex) {
            } catch (IOException ex) {
            }
            if(!isDoctypePresent){
                Object args[] = new Object[]{resourceFile.toString()};
                throw new Exception(
                    localStrings.getStringWithDefault("resources.parser.doctype_not_present_in_xml", 
                                            "Error Parsing the xml ({0}), doctype is not present",
                                            args));
            }
            Exception  x = sxe;
            if (sxe.getException() != null)
               x = sxe.getException();
            throw new Exception(x.getLocalizedMessage());
        }
        catch (ParserConfigurationException pce) {
            // Parser with specified options can't be built
            throw new Exception(pce.getLocalizedMessage());
        }
        catch (IOException ioe) {
            throw new Exception(ioe.getLocalizedMessage());
        }finally{
            if(fis != null){
                try{
                    fis.close();
                }catch(Exception e){
                    //ignore
                }
            }
        }
    }

    /**
     * detects and logs a warning if any of the deprecated descriptor (sun-resources*.dtd) is specified
     */
    private void detectDeprecatedDescriptor() {
        String publicId = document.getDoctype().getPublicId();
        String systemId = document.getDoctype().getSystemId();
        if( (publicId != null && publicId.contains(SUN_RESOURCES)) ||
                (systemId != null && systemId.contains(SUN_RESOURCES))){
            String msg = localStrings.getString(
                    "deprecated.resources.dtd", resourceFile.getAbsolutePath() );
            _logger.log(Level.FINEST, msg);
        }
    }

    /**
     * Get All the resources from the document object.
     *
     */
    private void generateResourceObjects(String scope) throws Exception
    {
        if (document != null) {
            for (Node nextKid = document.getDocumentElement().getFirstChild();
                    nextKid != null; nextKid = nextKid.getNextSibling()) 
            {
                String nodeName = nextKid.getNodeName();
                if (nodeName.equalsIgnoreCase(Resource.CUSTOM_RESOURCE)) {
                    generateCustomResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.EXTERNAL_JNDI_RESOURCE)) 
                {
                    generateJNDIResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.JDBC_RESOURCE)) 
                {
                    generateJDBCResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.JDBC_CONNECTION_POOL)) 
                {
                    generateJDBCConnectionPoolResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.MAIL_RESOURCE)) 
                {
                    generateMailResource(nextKid, scope);
                }
                //PMF resource is no more supported and hence removing support form sun-resources.xml
                else if (nodeName.equalsIgnoreCase(Resource.PERSISTENCE_MANAGER_FACTORY_RESOURCE))
                {
                   generatePersistenceResource(nextKid);
                   _logger.log(Level.FINEST, "persistence-manager-factory-resource is no more supported " +
                           ", ignoring the resource description");
                }
                else if (nodeName.equalsIgnoreCase(Resource.ADMIN_OBJECT_RESOURCE))
                {
                    generateAdminObjectResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.CONNECTOR_RESOURCE)) 
                {
                    generateConnectorResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.CONNECTOR_CONNECTION_POOL)) 
                {
                    generateConnectorConnectionPoolResource(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.RESOURCE_ADAPTER_CONFIG)) 
                {
                    generateResourceAdapterConfig(nextKid, scope);
                }
                else if (nodeName.equalsIgnoreCase(Resource.CONNECTOR_WORK_SECURITY_MAP))
                {
                    generateWorkSecurityMap(nextKid, scope);
                }
            }
        }
    }

    /**
     * Sorts the resources defined in the resources configuration xml file into
     * two buckets
     *  a) list of resources that needs to be created prior to
     *  module deployment. This includes all non-Connector resources
     *  and resource-adapter-config
     *  b) includes all connector resources in the order in which the resources needs
     *  to be created
     *  and returns the requested resources bucker to the caller.
     *   
     *  @param resources Resources list as defined in sun-resources.xml
     *  @param type Specified either ResourcesXMLParser.CONNECTOR or 
     *  ResourcesXMLParser.NONCONNECTOR to indicate the type of 
     *  resources are needed by the client of the ResourcesXMLParser
     *  @param isResourceCreation During the resource Creation Phase, RA configs are
     *  added to the nonConnector resources list so that they can be created in the
     *  PreResCreationPhase. When the isResourceCreation is false, the 
     *  RA config resuorces are added to the Connector Resources list, so that they 
     *  can be deleted as all other connector resources in the 
     *  PreResDeletionPhase
     */
    private static List getResourcesOfType(List resources, 
                                            int type, boolean isResourceCreation, boolean ignoreDuplicates) {
        List nonConnectorResources = new ArrayList();
        List connectorResources = new ArrayList();
        
        for (Resource res : resources) {
            if (isConnectorResource(res)) {
                if (res.getType().equals(Resource.RESOURCE_ADAPTER_CONFIG)) {
                    if(isResourceCreation) {
                        //RA config is considered as a nonConnector Resource, 
                        //during sun-resources.xml resource-creation phase, so that 
                        //it could be created before the RAR is deployed.
                        addToList(nonConnectorResources, res, ignoreDuplicates);
                    } else {
                        addToList(connectorResources, res, ignoreDuplicates);
                    }
                } else {
                    addToList(connectorResources, res, ignoreDuplicates);
                }
            } else {
                addToList(nonConnectorResources, res, ignoreDuplicates);
            }
        }
        
        List finalSortedConnectorList = sortConnectorResources(connectorResources);
        List finalSortedNonConnectorList = sortNonConnectorResources(nonConnectorResources);
        if (type == CONNECTOR) {
            return finalSortedConnectorList;
        } else {
            return finalSortedNonConnectorList;
        }
    }

    private static void addToList(List resources, Resource res, boolean ignoreDuplicates){
        if(ignoreDuplicates){
            if(!resources.contains(res)){
                resources.add(res);
            }
        }else{
            resources.add(res);
        }
    }

    /**
     * Sort connector resources
     * Resource Adapter configs are added first.
     * Pools are then added to the list, so that the connection
     * pools can be created prior to any other connector resource defined
     * in the resources configuration xml file.
     * @param connectorResources List of Resources to be sorted.
     * @return The sorted list.
     */
    private static List sortConnectorResources(List connectorResources) {
        List raconfigs = new ArrayList();
        List ccps = new ArrayList();
        List others = new ArrayList();
        
        List finalSortedConnectorList = new ArrayList();
        
        for (Resource resource : connectorResources) {
            if (resource.getType().equals(Resource.RESOURCE_ADAPTER_CONFIG)){
                raconfigs.add(resource);
            } else if (resource.getType().equals(Resource.CONNECTOR_CONNECTION_POOL)) {
                ccps.add(resource);
            } else {
                others.add(resource);
            }
        }
        
        finalSortedConnectorList.addAll(raconfigs);
        finalSortedConnectorList.addAll(ccps);
        finalSortedConnectorList.addAll(others);
        return finalSortedConnectorList;
    }
    
    /**
     * Sort non connector resources
     * JDBC Pools are added first to the list, so that the conncetion
     * pools can be created prior to any other jdbc resource defined
     * in the resources configuration xml file.
     * @param nonConnectorResources List of Resources to be sorted.
     * @return The sorted list.
     */
    private static List sortNonConnectorResources(List nonConnectorResources) {
        List jdbccps = new ArrayList();
        List pmfs = new ArrayList();
        List others = new ArrayList();
        
        List finalSortedNonConnectorList = new ArrayList();
        
        for (Resource resource : nonConnectorResources) {
            if(resource.getType().equals(Resource.JDBC_CONNECTION_POOL)) {
                jdbccps.add(resource);
            } else if(resource.getType().equals(Resource.PERSISTENCE_MANAGER_FACTORY_RESOURCE)) {
                //TODO throw exception as pmf resource is not supported anymore
                pmfs.add(resource);
            } else {
                others.add(resource);
            }
        }
        
        finalSortedNonConnectorList.addAll(jdbccps);
        finalSortedNonConnectorList.addAll(others);
        finalSortedNonConnectorList.addAll(pmfs);
        return finalSortedNonConnectorList;
    }
    
    /**
     * Determines if the passed in Resource is a connector
     * resource. A connector resource is either a connector connection pool or a
     * connector resource, security map, ra config or an admin object
     * 
     * @param res Resource that needs to be tested
     * @return
     */
    private static boolean isConnectorResource(Resource res) {
        String type = res.getType();
        return (    
                    (type.equals(Resource.ADMIN_OBJECT_RESOURCE)) ||
                    (type.equals(Resource.CONNECTOR_CONNECTION_POOL)) ||
                    (type.equals(Resource.CONNECTOR_RESOURCE)) ||
                    (type.equals(Resource.CONNECTOR_SECURITY_MAP)) ||
                    (type.equals(Resource.RESOURCE_ADAPTER_CONFIG)) 
            );
    }

    private String getScopedName(String name, String scope) throws Exception{
        if(namingScopes.contains(scope)){
            if(name != null){
                for(String namingScope : namingScopes){
                    Object args[] = new Object[]{name, namingScope, scope};
                    if(name.startsWith(namingScope) && !namingScope.equals(scope)){
                        String msg = localStrings.getStringWithDefault( "invalid.scope.defined.for.resource",
                                                                "Resource [ {0} ] is not allowed to specify the scope " +
                                                                        "[ {1} ]. Acceptable scope for this resource" +
                                                                        " is [ {2} ]", args
                                                                 );
                        throw new IllegalStateException(msg);
                    }
                }
                if(!name.startsWith(scope)){
                    name = scope + name;
                }
            }
        }
        return name;
    }

    private void generatePersistenceResource(Node nextKid) throws Exception
    {
        NamedNodeMap attributes = nextKid.getAttributes();
        if (attributes == null)
            return;

        Node jndiNameNode = attributes.getNamedItem(JNDI_NAME);
        String jndiName = jndiNameNode.getNodeValue();
        Node factoryClassNode = attributes.getNamedItem(FACTORY_CLASS);
        Node poolNameNode = attributes.getNamedItem(JDBC_RESOURCE_JNDI_NAME);
        Node enabledNode = attributes.getNamedItem(ENABLED);

        Resource persistenceResource =
                    new Resource(Resource.PERSISTENCE_MANAGER_FACTORY_RESOURCE);
        persistenceResource.setAttribute(JNDI_NAME, jndiName);
        if (factoryClassNode != null) {
           String factoryClass = factoryClassNode.getNodeValue();
           persistenceResource.setAttribute(FACTORY_CLASS, factoryClass);
        }
        if (poolNameNode != null) {
           String poolName = poolNameNode.getNodeValue();
           persistenceResource.setAttribute(JDBC_RESOURCE_JNDI_NAME, poolName);
        }
        if (enabledNode != null) {
           String sEnabled = enabledNode.getNodeValue();
           persistenceResource.setAttribute(ENABLED, sEnabled);
        }

        NodeList children = nextKid.getChildNodes();
        generatePropertyElement(persistenceResource, children);
        vResources.add(persistenceResource);

        //debug strings
        printResourceElements(persistenceResource);
    }

    /*
     * Generate the Custom resource
     */
    private void generateCustomResource(Node nextKid, String scope) throws Exception
    {
        NamedNodeMap attributes = nextKid.getAttributes();
        
        if (attributes == null)
            return;
        
        Node jndiNameNode = attributes.getNamedItem(JNDI_NAME);
        String jndiName = getScopedName(jndiNameNode.getNodeValue(), scope);
        
        Node resTypeNode = attributes.getNamedItem(RES_TYPE);
        String resType = resTypeNode.getNodeValue();
        
        Node factoryClassNode = attributes.getNamedItem(FACTORY_CLASS);
        String factoryClass = factoryClassNode.getNodeValue();
        
        Node enabledNode = attributes.getNamedItem(ENABLED);
        
        Resource customResource = new Resource(Resource.CUSTOM_RESOURCE);
        customResource.setAttribute(JNDI_NAME, jndiName);
        customResource.setAttribute(RES_TYPE, resType);
        customResource.setAttribute(FACTORY_CLASS, factoryClass);
        if (enabledNode != null) {
           String sEnabled = enabledNode.getNodeValue();
           customResource.setAttribute(ENABLED, sEnabled);
        }
        
        NodeList children = nextKid.getChildNodes();
        generatePropertyElement(customResource, children);
        vResources.add(customResource);
        
        //debug strings
        printResourceElements(customResource);
    }
    
    /**
     * Generate the JNDI resource
     */
    private void generateJNDIResource(Node nextKid, String scope) throws Exception
    {
        NamedNodeMap attributes = nextKid.getAttributes();
        if (attributes == null)
            return;
        
        Node jndiNameNode = attributes.getNamedItem(JNDI_NAME);
        String jndiName = getScopedName(jndiNameNode.getNodeValue(), scope);
        Node jndiLookupNode = attributes.getNamedItem(JNDI_LOOKUP);
        String jndiLookup = jndiLookupNode.getNodeValue();
        Node resTypeNode = attributes.getNamedItem(RES_TYPE);
        String resType = resTypeNode.getNodeValue();
        Node factoryClassNode = attributes.getNamedItem(FACTORY_CLASS);
        String factoryClass = factoryClassNode.getNodeValue();
        Node enabledNode = attributes.getNamedItem(ENABLED);
        
        Resource jndiResource = new Resource(Resource.EXTERNAL_JNDI_RESOURCE);
        jndiResource.setAttribute(JNDI_NAME, jndiName);
        jndiResource.setAttribute(JNDI_LOOKUP, jndiLookup);
        jndiResource.setAttribute(RES_TYPE, resType);
        jndiResource.setAttribute(FACTORY_CLASS, factoryClass);
        if (enabledNode != null) {
           String sEnabled = enabledNode.getNodeValue();
           jndiResource.setAttribute(ENABLED, sEnabled);
        }
        
        NodeList children = nextKid.getChildNodes();
        generatePropertyElement(jndiResource, children);
        vResources.add(jndiResource);
        
        //debug strings
        printResourceElements(jndiResource);
    }
    
    /**
     * Generate the JDBC resource
     */
    private void generateJDBCResource(Node nextKid, String scope) throws Exception {
        NamedNodeMap attributes = nextKid.getAttributes();
        if (attributes == null)
            return;
        
        Node jndiNameNode = attributes.getNamedItem(JNDI_NAME);
        String jndiName = getScopedName(jndiNameNode.getNodeValue(), scope);
        Node poolNameNode = attributes.getNamedItem(POOL_NAME);
        String poolName = getScopedName(poolNameNode.getNodeValue(), scope);
        Node enabledNode = attributes.getNamedItem(ENABLED);

        Resource jdbcResource = new Resource(Resource.JDBC_RESOURCE);
        jdbcResource.setAttribute(JNDI_NAME, jndiName);
        jdbcResource.setAttribute(POOL_NAME, poolName);
        if (enabledNode != null) {
           String enabledName = enabledNode.getNodeValue();
           jdbcResource.setAttribute(ENABLED, enabledName);
        }
        
        NodeList children = nextKid.getChildNodes();
        //get description
        if (children != null) 
        {
            for (int ii=0; iiResourceobjects in the order as defined
     * in the resources XML configuration file. Maintained for backward compat 
     * purposes only. 
     */
    public Iterator getResources() {
        return vResources.iterator();
    }
    
    public List getResourcesList() {
        return vResources;
    }
    
    /**
     * Returns an List of Resourceobjects that needs to be 
     * created prior to module deployment. This includes all non-Connector 
     * resources and resource-adapter-config
     * @param resources List of resources, from which the non connector
     * resources need to be obtained.
     * @param isResourceCreation indicates if this determination needs to be
     * done during the PreResCreationPhase. In the
     * PreResCreationPhase, RA config is added to the 
     * non connector list, so that the RA config is created prior to the
     * RA deployment. For all other purpose, this flag needs to be set to false. 
     */
    public static List  getNonConnectorResourcesList(List resources, 
                                                 boolean isResourceCreation, boolean ignoreDuplicates) {
        return getResourcesOfType(resources, NONCONNECTOR, isResourceCreation, ignoreDuplicates);
    }

    /**
     *  Returns an Iterator of Resource objects that correspond to 
     *  connector resources that needs to be created post module deployment. They 
     *  are arranged in the order in which the resources needs to be created
     * @param resources List of resources, from which the non connector
     * resources need to be obtained.
     * @param isResourceCreation indicates if this determination needs to be
     * done during the PreResCreationPhase. In the
     * PreResCreationPhase, RA config is added to the 
     * non connector list, so that the RA config is created prior to the
     * RA deployment. For all other purpose, this flag needs to be set to false. 
     */
    
    public static List getConnectorResourcesList(List resources, boolean isResourceCreation,
                                                 boolean ignoreDuplicates) {
        return getResourcesOfType(resources, CONNECTOR, isResourceCreation, ignoreDuplicates);
    }
    
    /**
     * Print(Debug) the resource
     */
    private void printResourceElements(Resource resource)
    {
        HashMap attrList = resource.getAttributes();
        
        Iterator attrIter = attrList.keySet().iterator();
        while (attrIter.hasNext())
        {
            String attrName = (String)attrIter.next();
            Logger.getLogger(ResourcesXMLParser.class.getName()).log(
                        Level.FINE, "general.print_attr_name", attrName);
        }
    }
    
    // Helper Method to convert a String type to a String[]
     private String[] convertToStringArray(Object sOptions){
        StringTokenizer optionTokenizer   = new StringTokenizer((String)sOptions,",");
        int             size            = optionTokenizer.countTokens();
        String []       sOptionsList = new String[size];
        for (int ii=0; ii




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