context.java

低版本的tomcat 对于有些老版本的应用还真的需要老版的中间件

	    }
	    if( name.equals( "org.apache.tomcat.protection_domain") ) {
		return getProtectionDomain();
	    }
	    if(name.equals("org.apache.tomcat.classloader")) {
		return this.getServletLoader().getClassLoader();
	    }
	    if( name.equals(FacadeManager.FACADE_ATTRIBUTE)) {
		if( ! allowAttribute(name) ) return null;
		return this.getFacadeManager();
	    }
	    return null; // org.apache.tomcat namespace is reserved in tomcat
	} else {
            Object o = attributes.get(name);
            return attributes.get(name);
        }
    }

    public Enumeration getAttributeNames() {
        return attributes.keys();
    }

    public void setAttribute(String name, Object object) {
        attributes.put(name, object);
    }

    public void removeAttribute(String name) {
        attributes.remove(name);
    }

    public String getDescription() {
        return this.description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public void setIcon( String icon ) {

    }

    public boolean isDistributable() {
        return this.isDistributable;
    }

    public void setDistributable(boolean isDistributable) {
        this.isDistributable = isDistributable;
    }

    public void setDistributable(String s) {
	// XXX
    }

    public int getSessionTimeOut() {
        return this.sessionTimeOut;
    }

    public void setSessionTimeOut(int sessionTimeOut) {
        this.sessionTimeOut = sessionTimeOut;
    }

    public FileNameMap getMimeMap() {
        return mimeTypes;
    }

    public void addContentType( String ext, String type) {
	mimeTypes.addContentType( ext, type );
    }

    public String getErrorPage(int errorCode) {
        return getErrorPage(String.valueOf(errorCode));
    }

    public void addErrorPage( String errorType, String value ) {
	this.errorPages.put( errorType, value );
    }

    public String getErrorPage(String errorCode) {
        return (String)errorPages.get(errorCode);
    }


    /** Authentication method, if any specified
     */
    public String getAuthMethod() {
	return authMethod;
    }

    /** Realm to be used
     */
    public String getRealmName() {
	return realmName;
    }

    public String getFormLoginPage() {
	return formLoginPage;
    }

    public String getFormErrorPage() {
	return formErrorPage;
    }

    public void setFormLoginPage( String page ) {
	formLoginPage=page;
    }
    
    public void setFormErrorPage( String page ) {
	formErrorPage=page;
    }

    public void setLoginConfig( String authMethod, String realmName,
				String formLoginPage, String formErrorPage)
    {
	// 	System.out.println("Login config: " + authMethod + " " + realmName + " " +
	// 			   formLoginPage + " " + formErrorPage);
	this.authMethod=authMethod;
	this.realmName=realmName;
	this.formLoginPage=formLoginPage;
	this.formErrorPage=formErrorPage;
    }

    // -------------------- Mappings --------------------

    /**
     * Maps a named servlet to a particular path or extension.
     * If the named servlet is unregistered, it will be added
     * and subsequently mapped.
     *
     * Note that the order of resolution to handle a request is:
     *
     *    exact mapped servlet (eg /catalog)
     *    prefix mapped servlets (eg /foo/bar/*)
     *    extension mapped servlets (eg *jsp)
     *    default servlet
     *
     */
    public void addServletMapping(String path, String servletName)
	throws TomcatException
    {
	if( mappings.get( path )!= null) {
	    log( "Removing duplicate " + path + " -> " + mappings.get(path) );
	    mappings.remove( path );
	    Container ct=(Container)containers.get( path );
	    removeContainer( ct );
	}
        ServletWrapper sw = (ServletWrapper)servlets.get(servletName);
	if (sw == null) {
	    // Workaround for frequent "bug" in web.xmls
	    // Declare a default mapping
	    log("Mapping with unregistered servlet " + servletName );
	    sw = addServlet( servletName, servletName );
	}
	if( "/".equals(path) )
	    defaultServlet = sw;

	mappings.put( path, sw );

	Container map=new Container();
	map.setContext( this );
	map.setHandler( sw );
	map.setPath( path );
	contextM.addContainer( map );
	containers.put( path, map );
    }

    /** Will add a new security constraint:
	For all paths:
	if( match(path) && match(method) && match( transport ) )
	then require("roles")

	This is equivalent with adding a Container with the path,
	method and transport. If the container will be matched,
	the request will have to pass the security constraints.
	
    */
    public void addSecurityConstraint( String path[], String methods[],
				       String roles[], String transport)
	throws TomcatException
    {
	for( int i=0; i< path.length; i++ ) {
	    Container ct=new Container();
	    ct.setContext( this );
	    ct.setTransport( transport );
	    ct.setRoles( roles );
	    ct.setPath( path[i] );
	    ct.setMethods( methods );

	    // XXX check if exists, merge if true.
	    constraints.put( path[i], ct );
	    //contextM.addSecurityConstraint( this, path[i], ct);
	    contextM.addContainer(  ct );
	}
    }

    public Enumeration getContainers() {
	return containers.elements();
    }

    public Enumeration getContainerLocations() {
	return containers.keys();
    }

    public Container getContainer( String path ) {
	return (Container)containers.get(path);
    }

    // return the container associated with this context -
    // which is also the default container
    public Container getContainer() {
	return defaultContainer;
    }

    public void removeContainer( Container ct ) {
	containers.remove(ct.getPath());
    }

//     public ServletWrapper getDefaultServlet() {
// 	if( defaultServlet==null)
// 	    defaultServlet=getServletByName(Constants.DEFAULT_SERVLET_NAME );
// 	return defaultServlet;
//     }

    // -------------------- Servlets management --------------------

    // XXX do we need that ??
    /** Remove the servlet with a specific name
     */
    public void removeServletByName(String servletName)
	throws TomcatException
    {
	servlets.remove( servletName );
    }

    public ServletWrapper getServletByName(String servletName) {
	return (ServletWrapper)servlets.get(servletName);
    }

    /**
     * Add a servlet with the given name to the container. The
     * servlet will be loaded by the container's class loader
     * and instantiated using the given class name.
     *
     * Called to add a new servlet from web.xml
     */
    public void addServlet(ServletWrapper wrapper)
    	throws TomcatException
    {
	wrapper.setContext( this );
	String name=wrapper.getServletName();
	//	System.out.println("Adding servlet " + name  + " " + wrapper);
        // check for duplicates
        if (servlets.get(name) != null) {
	    log("Removing duplicate servlet " + name  + " " + wrapper);
            removeServletByName(name);
	    //	    getServletByName(name).destroy();
        }
	servlets.put(name, wrapper);
    }

    public ServletWrapper addServlet(String name, String classN)
	throws TomcatException
    {
	ServletWrapper sw = new ServletWrapper();
	sw.setContext(this);
	
	sw.setServletName(name);
	if ( classN.startsWith("/")) {
	    sw.setPath(classN);
	} else {
	    sw.setServletClass(classN);
	}
	addServlet( sw );
	return sw;
    }

    public Enumeration getServletNames() {
	return servlets.keys();
    }

    // -------------------- Loading and sessions --------------------
    public void setServletLoader(ServletLoader loader ) {
	this.servletL=loader;
    }

    public ServletLoader getServletLoader() {
	return servletL;
    }

    /* -------------------- Utils  -------------------- */
    public void setDebug( int level ) {
	if(level>0) log( "Set debug to " + level );
	debug=level;
    }

    public void setDebug( String level ) {
	try {
	    setDebug( Integer.parseInt(level) );
	} catch (Exception e) {
	    log("Trying to set debug to '" + level + "':", e, Logger.ERROR);
	}
    }

    public int getDebug( ) {
	return debug;
    }

    // ------------------- Logging ---------------

    LogHelper loghelper = new LogHelper("tc_log", this);
    LogHelper loghelperServlet = new LogHelper("servlet_log", null);

    /** Internal log method
     */
    public final void log(String msg) {
	loghelper.log(msg);
    }

    /** Internal log method
     */
    public void log(String msg, Throwable t) {
	loghelper.log(msg, t);
    }

    /** Internal log method
     */
    public void log(String msg, Throwable t, int level) {
	loghelper.log(msg, t, level);
    }

    /** User-level log method ( called from a servlet)
     */
    public void logServlet( String msg , Throwable t ) {
	msg = ("path=\"" + path  + "\" :" + msg);
	loghelperServlet.log(msg, t);
    }

    public String toString() {
	return "Ctx( " + (vhost==null ? "" : vhost + ":" )  +  path +  " )";
    }

    // -------------------- Facade methods --------------------

    public Context getContext(String path) {
	if (! path.startsWith("/")) {
	    return null; // according to spec, null is returned
	    // if we can't  return a servlet, so it's more probable
	    // servlets will check for null than IllegalArgument
	}
        // Return null if cross context lookups are not allowed
        if (!crossContext)
            return null;
	// absolute path
	Request lr=contextM.createRequest( path );
	if( vhost != null ) lr.setServerName( vhost );
	getContextManager().processRequest(lr);
        return lr.getContext();
    }

    /** Implements getResource()
     *  See getRealPath(), it have to be local to the current Context -
     *  and can't go to a sub-context. That means we don't need any overhead.
     */
    public URL getResource(String rpath) throws MalformedURLException {
        if (rpath == null) return null;

        if(URLUtil.hasEscape(rpath))
            return null;

        URL url = null;
	String absPath=getAbsolutePath();

	if ("".equals(rpath))
	    return new URL( "file", null, 0, absPath );

	if ( ! rpath.startsWith("/")) 
	    rpath="/" + rpath;

	String realPath=FileUtil.safePath( absPath, rpath);
	if( realPath==null ) {
	    log( "Unsafe path " + absPath + " " + rpath );
	    return null;
	}
	
	try {
        url=new URL("file", null, 0,realPath );
	    if( debug>9) log( "getResourceURL=" + url + " request=" + rpath );