File	Doc	Category	Size	Date	Package
ApplicationFilterChain.java	API Doc	Glassfish v2 API	16488	Fri May 04 22:31:54 BST 2007	org.apache.catalina.core

ApplicationFilterChain

• java.lang.Object

Fields Summary
public static final int	INCREMENT
private ApplicationFilterConfig[]	filters Filters.
private int	pos The int which is used to maintain the current position in the filter chain.
private int	n The int which gives the current number of filters in the chain.
private Servlet	servlet The servlet instance to be executed by this chain.
private static final org.apache.catalina.util.StringManager	sm The string manager for our package.
private org.apache.catalina.util.InstanceSupport	support The InstanceSupport instance associated with our Wrapper (used to send "before filter" and "after filter" events.
private static Class[]	classType Static class array used when the SecurityManager is turned on and doFilter
private static Class[]	classTypeUsedInService Static class array used when the SecurityManager is turned on and service

Constructors Summary
public ApplicationFilterChain() Construct a new chain instance with no defined filters. // ----------------------------------------------------------- Constructors super();

Methods Summary
void	addFilter(ApplicationFilterConfig filterConfig) Add a filter to the set of filters that will be executed in this chain. param filterConfig The FilterConfig for the servlet to be executed if (n == filters.length) { ApplicationFilterConfig[] newFilters = new ApplicationFilterConfig[n + INCREMENT]; System.arraycopy(filters, 0, newFilters, 0, n); filters = newFilters; } filters[n++] = filterConfig;
public void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) Invoke the next filter in this chain, passing the specified request and response. If there are no more filters in this chain, invoke the service() method of the servlet itself. param request The servlet request we are processing param response The servlet response we are creating exception IOException if an input/output error occurs exception ServletException if a servlet exception occurs // ---------------------------------------------------- FilterChain Methods if (Globals.IS_SECURITY_ENABLED) { final ServletRequest req = request; final ServletResponse res = response; try { java.security.AccessController.doPrivileged( new java.security.PrivilegedExceptionAction() { public Object run() throws ServletException, IOException { internalDoFilter(req,res); return null; } } ); } catch( PrivilegedActionException pe) { Exception e = pe.getException(); if (e instanceof ServletException) throw (ServletException) e; else if (e instanceof IOException) throw (IOException) e; else if (e instanceof RuntimeException) throw (RuntimeException) e; else throw new ServletException(e.getMessage(), e); } } else { internalDoFilter(request,response); }
private void	internalDoFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response) // Call the next filter if there is one if (pos < n) { ApplicationFilterConfig filterConfig = filters[pos++]; Filter filter = null; try { filter = filterConfig.getFilter(); support.fireInstanceEvent(InstanceEvent.BEFORE_FILTER_EVENT, filter, request, response); if( SecurityUtil.isPackageProtectionEnabled() ) { final ServletRequest req = request; final ServletResponse res = response; Principal principal = ((HttpServletRequest) req).getUserPrincipal(); Object[] filterType = new Object[3]; filterType[0] = req; filterType[1] = res; filterType[2] = this; SecurityUtil.doAsPrivilege ("doFilter", filter, classType, filterType); filterType = null; } else { filter.doFilter(request, response, this); } support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT, filter, request, response); } catch (IOException e) { if (filter != null) support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT, filter, request, response, e); throw e; } catch (ServletException e) { if (filter != null) support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT, filter, request, response, e); throw e; } catch (RuntimeException e) { if (filter != null) support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT, filter, request, response, e); throw e; } catch (Throwable e) { if (filter != null) support.fireInstanceEvent(InstanceEvent.AFTER_FILTER_EVENT, filter, request, response, e); throw new ServletException (sm.getString("filterChain.filter"), e); } return; } // We fell off the end of the chain -- call the servlet instance /* IASRI 4665318 try { support.fireInstanceEvent(InstanceEvent.BEFORE_SERVICE_EVENT, servlet, request, response); if ((request instanceof HttpServletRequest) && (response instanceof HttpServletResponse)) { // START SJS WS 7.0 6236329 //if( System.getSecurityManager() != null) { if ( SecurityUtil.executeUnderSubjectDoAs() ){ // END OF SJS WS 7.0 6236329 final ServletRequest req = request; final ServletResponse res = response; Principal principal = ((HttpServletRequest) req).getUserPrincipal(); Object[] serviceType = new Object[2]; serviceType[0] = req; serviceType[1] = res; SecurityUtil.doAsPrivilege("service", servlet, classTypeUsedInService, serviceType, principal); serviceType = null; } else { servlet.service((HttpServletRequest) request, (HttpServletResponse) response); } } else { servlet.service(request, response); } support.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, servlet, request, response); } catch (IOException e) { support.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, servlet, request, response, e); throw e; } catch (ServletException e) { support.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, servlet, request, response, e); throw e; } catch (RuntimeException e) { support.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, servlet, request, response, e); throw e; } catch (Throwable e) { support.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, servlet, request, response, e); throw new ServletException (sm.getString("filterChain.servlet"), e); } */ // START IASRI 4665318 servletService(request, response, servlet, support); // END IASRI 4665318
void	release() Release references to the filters and wrapper executed by this chain. n = 0; pos = 0; servlet = null; support = null;
static void	servletService(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.Servlet serv, org.apache.catalina.util.InstanceSupport supp) try { supp.fireInstanceEvent(InstanceEvent.BEFORE_SERVICE_EVENT, serv, request, response); if ((request instanceof HttpServletRequest) && (response instanceof HttpServletResponse)) { if ( SecurityUtil.executeUnderSubjectDoAs() ){ final ServletRequest req = request; final ServletResponse res = response; Principal principal = ((HttpServletRequest) req).getUserPrincipal(); Object[] serviceType = new Object[2]; serviceType[0] = req; serviceType[1] = res; SecurityUtil.doAsPrivilege("service", serv, classTypeUsedInService, serviceType, principal); serviceType = null; } else { serv.service((HttpServletRequest) request, (HttpServletResponse) response); } } else { serv.service(request, response); } supp.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, serv, request, response); } catch (IOException e) { supp.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, serv, request, response, e); throw e; } catch (ServletException e) { supp.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, serv, request, response, e); throw e; } catch (RuntimeException e) { supp.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, serv, request, response, e); throw e; } catch (Throwable e) { supp.fireInstanceEvent(InstanceEvent.AFTER_SERVICE_EVENT, serv, request, response, e); throw new ServletException (sm.getString("filterChain.servlet"), e); }
void	setServlet(javax.servlet.Servlet servlet) Set the servlet that will be executed at the end of this chain. param wrapper The Wrapper for the servlet to be executed this.servlet = servlet;
void	setSupport(org.apache.catalina.util.InstanceSupport support) Set the InstanceSupport object used for event notifications for this filter chain. param support The InstanceSupport object for our Wrapper this.support = support;