CrumbFilter (Jenkins core 2.452.4 API)

java.lang.Object
- hudson.security.csrf.CrumbFilter

All Implemented Interfaces:

javax.servlet.Filter
```
public class CrumbFilter
extends Object
implements javax.servlet.Filter
```
Checks for and validates crumbs on requests that cause state changes, to protect against cross site request forgeries.

Author:

dty

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class CrumbFilter.ErrorCustomizer

Constructor Summary

Constructors
Constructor Description

CrumbFilter()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`destroy()`
`void`	`doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)`
`CrumbIssuer`	`getCrumbIssuer()`	Because servlet containers generally don't specify the ordering of the initialization (and different implementations indeed do this differently --- See JENKINS-3878), we cannot use Hudson to the CrumbIssuer into CrumbFilter eagerly.
`void`	`init(javax.servlet.FilterConfig filterConfig)`
`protected static boolean`	`isMultipart(javax.servlet.http.HttpServletRequest request)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CrumbFilter
```
public CrumbFilter()
```
- Method Detail
  - getCrumbIssuer
```
public CrumbIssuer getCrumbIssuer()
```
    Because servlet containers generally don't specify the ordering of the initialization (and different implementations indeed do this differently --- See JENKINS-3878), we cannot use Hudson to the CrumbIssuer into CrumbFilter eagerly.
  - init
```
public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException
```
    Specified by:
    
    init in interface javax.servlet.Filter
    
    Throws:
    
    javax.servlet.ServletException
  - doFilter
```
public void doFilter(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException
```
    Specified by:
    
    doFilter in interface javax.servlet.Filter
    
    Throws:
    
    IOException
    
    javax.servlet.ServletException
  - isMultipart
```
protected static boolean isMultipart(javax.servlet.http.HttpServletRequest request)
```
  - destroy
```
public void destroy()
```
    Specified by:
    
    destroy in interface javax.servlet.Filter