Struct rocket::shield::Shield

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pub struct Shield { /* private fields */ }
Expand description

A Fairing that injects browser security and privacy headers into all outgoing responses.

§Usage

To use Shield, first construct an instance of it. To use the default set of headers, construct with Shield::default(). For an instance with no preset headers, use Shield::new(). To enable an additional header, use enable(), and to disable a header, use disable():

use rocket::shield::Shield;
use rocket::shield::{XssFilter, ExpectCt};

// A `Shield` with the default headers:
let shield = Shield::default();

// A `Shield` with the default headers minus `XssFilter`:
let shield = Shield::default().disable::<XssFilter>();

// A `Shield` with the default headers plus `ExpectCt`.
let shield = Shield::default().enable(ExpectCt::default());

// A `Shield` with only `XssFilter` and `ExpectCt`.
let shield = Shield::default()
    .enable(XssFilter::default())
    .enable(ExpectCt::default());

Then, attach the instance of Shield to your application’s instance of Rocket:

rocket::build()
    // ...
    .attach(shield)

The fairing will inject all enabled headers into all outgoing responses unless the response already contains a header with the same name. If it does contain the header, a warning is emitted, and the header is not overwritten.

§TLS and HSTS

If TLS is configured and enabled when the application is launched in a non-debug profile, HSTS is automatically enabled with its default policy and a warning is logged.

To get rid of this warning, explicitly Shield::enable() an Hsts policy.

Implementations§

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impl Shield

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pub fn new() -> Self

Returns an instance of Shield with no headers enabled.

§Example
use rocket::shield::Shield;

let shield = Shield::new();
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pub fn enable<P: Policy>(self, policy: P) -> Self

Enables the policy header policy.

If the policy was previously enabled, the configuration is replaced with that of policy.

§Example
use rocket::shield::Shield;
use rocket::shield::NoSniff;

let shield = Shield::new().enable(NoSniff::default());
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pub fn disable<P: Policy>(self) -> Self

Disables the policy header policy.

§Example
use rocket::shield::Shield;
use rocket::shield::NoSniff;

let shield = Shield::default().disable::<NoSniff>();
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pub fn is_enabled<P: Policy>(&self) -> bool

Returns true if the policy P is enabled.

§Example
use rocket::shield::Shield;
use rocket::shield::{Permission, NoSniff, Frame};
use rocket::shield::{Prefetch, ExpectCt, Referrer};

let shield = Shield::default();

assert!(shield.is_enabled::<NoSniff>());
assert!(shield.is_enabled::<Frame>());
assert!(shield.is_enabled::<Permission>());

assert!(!shield.is_enabled::<Prefetch>());
assert!(!shield.is_enabled::<ExpectCt>());
assert!(!shield.is_enabled::<Referrer>());

Trait Implementations§

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impl Default for Shield

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fn default() -> Self

Returns a new Shield instance. See the table for a description of the policies used by default.

§Example
use rocket::shield::Shield;

let shield = Shield::default();
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impl Fairing for Shield

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fn info(&self) -> Info

Returns an Info structure containing the name and Kind of this fairing. The name can be any arbitrary string. Kind must be an ord set of Kind variants. Read more
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fn on_liftoff<'life0, 'life1, 'async_trait>( &'life0 self, rocket: &'life1 Rocket<Orbit> ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

The liftoff callback. Read more
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fn on_response<'r, 'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _: &'r Request<'life1>, response: &'life2 mut Response<'r> ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'r: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

The response callback. Read more
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fn on_ignite<'life0, 'async_trait>( &'life0 self, rocket: Rocket<Build> ) -> Pin<Box<dyn Future<Output = Result> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

The ignite callback. Returns Ok if ignition should proceed and Err if ignition and launch should be aborted. Read more
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fn on_request<'life0, 'life1, 'life2, 'life3, 'life4, 'async_trait>( &'life0 self, _req: &'life1 mut Request<'life2>, _data: &'life3 mut Data<'life4> ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait,

The request callback. Read more
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fn on_shutdown<'life0, 'life1, 'async_trait>( &'life0 self, _rocket: &'life1 Rocket<Orbit> ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

The shutdown callback. Read more

Auto Trait Implementations§

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impl !RefUnwindSafe for Shield

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impl Send for Shield

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impl Sync for Shield

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impl Unpin for Shield

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impl !UnwindSafe for Shield

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