webxml2jk.java

业界著名的tomcat服务器的最新6.0的源代码。

            Node n1=getChild( lcN, "form-login-config");
            String loginPage= getChildContent( n1, "form-login-page");
            String errPage= getChildContent( n1, "form-error-page");

	    if(loginPage != null) {
		int lpos = loginPage.lastIndexOf("/");
		String jscurl = loginPage.substring(0,lpos+1) + "j_security_check";
                gen.generateLoginConfig( jscurl, errPage, authMeth );
	    }
        }

        log.info("Generating mappings for security constraints " );
        for( Node mapN=getChild( webN, "security-constraint" );
             mapN != null; mapN = getNext( mapN )) {

            Vector methods=new Vector();
            Vector urls=new Vector();
            Vector roles=new Vector();
            boolean isSSL=false;
            
            Node wrcN=getChild( mapN, "web-resource-collection");
            for( Node uN=getChild(wrcN, "http-method");
                 uN!=null; uN=getNext( uN )) {
                methods.addElement( getContent( uN ));
            }
            for( Node uN=getChild(wrcN, "url-pattern");
                 uN!=null; uN=getNext( uN )) {
                urls.addElement( getContent( uN ));
            }

            // Not used at the moment
            Node acN=getChild( mapN, "auth-constraint");
            for( Node rN=getChild(acN, "role-name");
                 rN!=null; rN=getNext( rN )) {
                roles.addElement(getContent( rN ));
            }

            Node ucN=getChild( mapN, "user-data-constraint");
            String transp=getContent(getChild( ucN, "transport-guarantee"));
            if( transp!=null ) {
                if( "INTEGRAL".equalsIgnoreCase( transp ) ||
                    "CONFIDENTIAL".equalsIgnoreCase( transp ) ) {
                    isSSL=true;
                }
            }

            gen.generateConstraints( urls, methods, roles, isSSL );
        }
        gen.generateEnd();
    }
    
    // -------------------- Main and ant wrapper --------------------
    
    public void execute() {
        try {
            if( docBase== null) {
                log.error("No docbase - please specify the base directory of you web application ( -docBase PATH )");
                return;
            }
            if( cpath== null) {
                log.error("No context - please specify the mount ( -context PATH )");
                return;
            }
            File docbF=new File(docBase);
            File wXmlF=new File( docBase, "WEB-INF/web.xml");

            Document wXmlN=readXml(wXmlF);
            if( wXmlN == null ) return;

            webN = wXmlN.getDocumentElement();
            if( webN==null ) {
                log.error("Can't find web-app");
                return;
            }

            jkDir=new File( docbF, "WEB-INF/jk2" );
            jkDir.mkdirs();
            
            MappingGenerator generator=new GeneratorJk2();
            generator.setWebXmlReader( this );
            generate( generator );

            generator=new GeneratorJk1();
            generator.setWebXmlReader( this );
            generate( generator );

            generator=new GeneratorApache2();
            generator.setWebXmlReader( this );
            generate( generator );

        } catch( Exception ex ) {
            ex.printStackTrace();
        }
    }


    public static void main(String args[] ) {
        try {
            if( args.length == 1 &&
                ( "-?".equals(args[0]) || "-h".equals( args[0])) ) {
                System.out.println("Usage: ");
                System.out.println("  WebXml2Jk [OPTIONS]");
                System.out.println();
                System.out.println("  -docBase DIR        The location of the webapp. Required");
                System.out.println("  -group GROUP        Group, if you have multiple tomcats with diffrent content. " );
                System.out.println("                      The default is 'lb', and should be used in most cases");
                System.out.println("  -host HOSTNAME      Canonical hostname - for virtual hosts");
                System.out.println("  -context /CPATH     Context path where the app will be mounted");
                return;
            }

            WebXml2Jk w2jk=new WebXml2Jk();

            /* do ant-style property setting */
            IntrospectionUtils.processArgs( w2jk, args, new String[] {},
                                            null, new Hashtable());
            w2jk.execute();
        } catch( Exception ex ) {
            ex.printStackTrace();
        }

    }

    private static org.apache.juli.logging.Log log=
        org.apache.juli.logging.LogFactory.getLog( WebXml2Jk.class );

    
    // -------------------- DOM utils --------------------

    /** Get the content of a node
     */
    public static String getContent(Node n ) {
        if( n==null ) return null;
        Node n1=n.getFirstChild();
        // XXX Check if it's a text node

        String s1=n1.getNodeValue();
        return s1.trim();
    }
    
    /** Get the first child
     */
    public static Node getChild( Node parent, String name ) {
        if( parent==null ) return null;
        Node first=parent.getFirstChild();
        if( first==null ) return null;
        for (Node node = first; node != null;
             node = node.getNextSibling()) {
            //System.out.println("getNode: " + name + " " + node.getNodeName());
            if( name.equals( node.getNodeName() ) ) {
                return node;
            }
        }
        return null;
    }

    /** Get the first child's content ( i.e. it's included TEXT node )
     */
    public static String getChildContent( Node parent, String name ) {
        Node first=parent.getFirstChild();
        if( first==null ) return null;
        for (Node node = first; node != null;
             node = node.getNextSibling()) {
            //System.out.println("getNode: " + name + " " + node.getNodeName());
            if( name.equals( node.getNodeName() ) ) {
                return getContent( node );
            }
        }
        return null;
    }

    /** Get the node in the list of siblings
     */
    public static Node getNext( Node current ) {
        Node first=current.getNextSibling();
        String name=current.getNodeName();
        if( first==null ) return null;
        for (Node node = first; node != null;
             node = node.getNextSibling()) {
            //System.out.println("getNode: " + name + " " + node.getNodeName());
            if( name.equals( node.getNodeName() ) ) {
                return node;
            }
        }
        return null;
    }

    public static class NullResolver implements EntityResolver {
        public InputSource resolveEntity (String publicId,
                                                   String systemId)
            throws SAXException, IOException
        {
            if (log.isDebugEnabled())
                log.debug("ResolveEntity: " + publicId + " " + systemId);
            return new InputSource(new StringReader(""));
        }
    }
    
    public static Document readXml(File xmlF)
        throws SAXException, IOException, ParserConfigurationException
    {
        if( ! xmlF.exists() ) {
            log.error("No xml file " + xmlF );
            return null;
        }
        DocumentBuilderFactory dbf =
            DocumentBuilderFactory.newInstance();

        dbf.setValidating(false);
        dbf.setIgnoringComments(false);
        dbf.setIgnoringElementContentWhitespace(true);
        //dbf.setCoalescing(true);
        //dbf.setExpandEntityReferences(true);

        DocumentBuilder db = null;
        db = dbf.newDocumentBuilder();
        db.setEntityResolver( new NullResolver() );
        
        // db.setErrorHandler( new MyErrorHandler());

        Document doc = db.parse(xmlF);
        return doc;
    }

}