io.vertx.ext.web.handler

Interface CSPHandler

All Superinterfaces:

Handler<RoutingContext>

public interface CSPHandler
extends Handler<RoutingContext>

Content Security Policy (CSP) is an added layer of security that helps to detect and mitigate certain types of attacks, including Cross Site Scripting (XSS) and data injection attacks. These attacks are used for everything from data theft to site defacement to distribution of malware. CSP is designed to be fully backward compatible. Browsers that don't support it still work with servers that implement it, and vice-versa: browsers that don't support CSP simply ignore it, functioning as usual, defaulting to the standard same-origin policy for web content. If the site doesn't offer the CSP header, browsers likewise use the standard same-origin policy.

Method Summary

Modifier and Type	Method and Description
CSPHandler	addDirective(String name, String value) Adds a single directive entry to the handler.
static CSPHandler	create() Creates a new instance of the handler.
CSPHandler	setDirective(String name, String value) Sets a single directive entry to the handler.
CSPHandler	setReportOnly(boolean reportOnly) To ease deployment, CSP can be deployed in report-only mode.

Methods inherited from interface io.vertx.core.Handler

handle

Method Detail

create

static CSPHandler create()

Creates a new instance of the handler.

Returns:

a new CSP handler.

setDirective

CSPHandler setDirective(String name,
                        String value)

Sets a single directive entry to the handler. All previously set or added directives will be replaced. For more information on directives see: Content-Security-Policy.

Parameters:

name - the directive name

value - the directive value.

Returns:

fluent self

addDirective

CSPHandler addDirective(String name,
                        String value)

Adds a single directive entry to the handler. All previously set or added directives will be preserved. For more information on directives see: Content-Security-Policy.

Parameters:

name - the directive name

value - the directive value.

Returns:

fluent self

setReportOnly

CSPHandler setReportOnly(boolean reportOnly)

To ease deployment, CSP can be deployed in report-only mode. The policy is not enforced, but any violations are reported to a provided URI. Additionally, a report-only header can be used to test a future revision to a policy without actually deploying it.

Parameters:

reportOnly - enable report only

Returns:

fluent self.