dfischer.femtowebserver.filter
Class RestrictedInetAddressFilter

java.lang.Object
  |
  +--dfischer.femtowebserver.httpd.HttpdFilter
        |
        +--dfischer.femtowebserver.filter.RestrictedInetAddressFilter

public class RestrictedInetAddressFilter

extends HttpdFilter

This filter restricts the access from a remote host to the Femto Web Server. Only requests from the hosts (remote ip addresses) which are listed/configured in the filter arguments will be served. Request from all other hosts will be aborted.

 Configuration Example:
 ...
 ...
 Httpd httpdThread = new Httpd();

 // configure femto web server
 String serverName = "127.0.0.1";
 try { serverName = InetAddress.getLocalHost().getHostName(); } catch (Exception ex) {}
 httpdThread.setServerName(serverName);
 httpdThread.setServerPort(80);
 
 String[] allowedRemoteIpAddresses = { "127.0.0.1", "172.16.4.33" };
 httpdThread.addFilter("dfischer.femtowebserver.filter.RestrictedInetAddressFilter", allowedRemoteIpAddresses);
 ...
 ...
 

 Sourcecode of Filter:

 package dfischer.femtowebserver.filter;
 import dfischer.femtowebserver.httpd.*;

 public class RestrictedInetAddressFilter extends HttpdFilter
 {
      public void filterRequest(HttpRequest httpRequest, HttpResponse httpResponse) throws Exception
      {
          String remoteIpAddress = httpRequest.getRemoteAddress();
	
          String[] filterArguments = getFilterArguments();
          for (int x = 0; x < filterArguments.length; x++)
          {
              // check remote access
              if (filterArguments[x].equalsIgnoreCase(remoteIpAddress))
                  return;
          }
	
          // abort request - forbidden
          HttpResponse errorResponse = abortRequest();
          errorResponse.setError(403, "Forbidden");
      }

      public void filterResponse(HttpRequest httpRequest, HttpResponse httpResponse) throws Exception
      {
      }
 }
 

See Also:

ContentCompressionFilter, HttpDebugFilter, HttpSessionCookieHandler, HttpdFilter

Constructor Summary

RestrictedInetAddressFilter()

Method Summary

void	filterRequest(HttpRequest httpRequest, HttpResponse httpResponse) Allows filtering tasks on the HTTP request and to preset the HTTP response (at his time blank).
void	filterResponse(HttpRequest httpRequest, HttpResponse httpResponse) Allows filtering tasks on the HTTP response and to access the HTTP request.

Methods inherited from class dfischer.femtowebserver.httpd.HttpdFilter

abortRequest, getFilterArguments, getHttpdProperties

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RestrictedInetAddressFilter

public RestrictedInetAddressFilter()

Method Detail

filterRequest

public void filterRequest(HttpRequest httpRequest,
                          HttpResponse httpResponse)
                   throws java.lang.Exception

Description copied from class: HttpdFilter

Allows filtering tasks on the HTTP request and to preset the HTTP response (at his time blank). Consider that some or all parts of the HTTP response will later be overwritten when the (modified) request is processed by the Femto Web Server.

Overrides:

filterRequest in class HttpdFilter

Following copied from class: dfischer.femtowebserver.httpd.HttpdFilter

Parameters:

httpRequest - The HTTP request data (browser request)

HttpResponse - The HTTP response data (server response)

See Also:

HttpRequest.getSession(), HttpRequest.setSession(dfischer.femtowebserver.httpd.HttpdSession), HttpRequest.getRemoteAddress(), HttpRequest.setRemoteAddress(java.lang.String), HttpRequest.getVirtualHost(), HttpRequest.setVirtualHost(java.lang.String), HttpRequest.getVirtualPort(), HttpRequest.setVirtualPort(int), HttpRequest.getUserAgent(), HttpRequest.setUserAgent(java.lang.String), HttpRequest.getHeaderField(java.lang.String), HttpRequest.addHeaderField(java.lang.String, java.lang.String), HttpRequest.updateHeaderField(java.lang.String, java.lang.String), HttpRequest.removeHeaderField(java.lang.String), HttpRequest.getMethod(), HttpRequest.setMethod(java.lang.String), HttpRequest.getRequest(), HttpRequest.setRequest(java.lang.String), HttpRequest.getParameter(String), HttpRequest.addParameter(java.lang.String, java.lang.String), HttpRequest.updateParameter(java.lang.String, java.lang.String), HttpRequest.removeParameter(java.lang.String), HttpRequest.getContent(), HttpRequest.setContent(byte[]), HttpRequest.clearContent(), HttpRequest.getContentType(), HttpRequest.setContentType(java.lang.String), HttpRequest.getContentSubtype(), HttpRequest.setContentSubtype(java.lang.String)

filterResponse

public void filterResponse(HttpRequest httpRequest,
                           HttpResponse httpResponse)
                    throws java.lang.Exception

Description copied from class: HttpdFilter

Allows filtering tasks on the HTTP response and to access the HTTP request. Consider that modifying the HTTP request will have no impact to the HTTP response result because the request has been already processed by the Femto Web Server.

Overrides:

filterResponse in class HttpdFilter

Following copied from class: dfischer.femtowebserver.httpd.HttpdFilter

Parameters:

httpRequest - The HTTP request data (browser request)

HttpResponse - The HTTP response data (server response)

See Also:

HttpResponse.getSession(), HttpResponse.setSession(dfischer.femtowebserver.httpd.HttpdSession), HttpResponse.getStatus(), HttpResponse.setStatus(int, java.lang.String), HttpResponse.getContentType(), HttpResponse.getContentSubtype(), HttpResponse.setContentType(java.lang.String), HttpResponse.getHeaderField(java.lang.String), HttpResponse.getHeaderFieldNames(), HttpResponse.updateHeaderField(java.lang.String, java.lang.String), HttpResponse.addHeaderField(java.lang.String, java.lang.String), HttpResponse.removeHeaderField(java.lang.String), HttpResponse.getContent(), HttpResponse.getContentAsString(), HttpResponse.setContent(byte[]), HttpResponse.clearContent(), HttpResponse.print(String), HttpResponse.println(String)