public class RestCsrfPreventionFilter extends CsrfPreventionFilterBase
Positive scenario: Client Server | | | GET Fetch Request \| JSESSIONID |---------------------------------| X-CSRF-Token | /| pair generation |/Response to Fetch Request | |---------------------------------| JSESSIONID |\ | X-CSRF-Token | | pair cached | POST Request with valid nonce \| JSESSIONID |---------------------------------| X-CSRF-Token | /| pair validation |/ Response to POST Request | |---------------------------------| |\ | Negative scenario: Client Server | | | POST Request without nonce \| JSESSIONID |---------------------------------| X-CSRF-Token | /| pair validation |/Request is rejected | |---------------------------------| |\ | Client Server | | | POST Request with invalid nonce\| JSESSIONID |---------------------------------| X-CSRF-Token | /| pair validation |/Request is rejected | |---------------------------------| |\ |
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Constructor and Description |
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RestCsrfPreventionFilter() |
Modifier and Type | Method and Description |
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void |
doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
The
doFilter method of the Filter is called by the container
each time a request/response pair is passed through the chain due to a
client request for a resource at the end of the chain. |
java.util.Set<java.lang.String> |
getPathsAcceptingParams() |
void |
setPathsAcceptingParams(java.lang.String pathsList)
A comma separated list of URLs that can accept nonces via request
parameter 'X-CSRF-Token'.
|
generateNonce, getDenyStatus, getLogger, getRequestedPath, init, isConfigProblemFatal, setDenyStatus, setRandomClass
destroy
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws java.io.IOException, ServletException
javax.servlet.Filter
doFilter
method of the Filter is called by the container
each time a request/response pair is passed through the chain due to a
client request for a resource at the end of the chain. The FilterChain
passed in to this method allows the Filter to pass on the request and
response to the next entity in the chain.
A typical implementation of this method would follow the following
pattern:-
1. Examine the request
2. Optionally wrap the request object with a custom implementation to
filter content or headers for input filtering
3. Optionally wrap the response object with a custom implementation to
filter content or headers for output filtering
4. a) Either invoke the next entity in the chain using
the FilterChain object (chain.doFilter()
),
4. b) or not pass on the request/response pair to the
next entity in the filter chain to block the request processing
5. Directly set headers on the response after invocation of the next
entity in the filter chain.
java.io.IOException
ServletException
public void setPathsAcceptingParams(java.lang.String pathsList)
pathsList
- Comma separated list of URLs to be configured as paths
accepting request parameters with nonce information.public java.util.Set<java.lang.String> getPathsAcceptingParams()
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