66 lines
2.2 KiB
Rust
66 lines
2.2 KiB
Rust
//! This is an example of how you can mix and match the "Truly manual" mode with "Guard".
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//!
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//! In this example, you typically have an application wide `Cors` struct except for one specific
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//! `ping` route that you want to allow all Origins to access.
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use rocket::error::Error;
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use rocket::http::Method;
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use rocket::response::Responder;
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use rocket::{get, options, routes};
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use rocket_cors::{AllowedHeaders, AllowedOrigins, CorsOptions, Guard};
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/// The "usual" app route
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#[get("/")]
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fn app(cors: Guard<'_>) -> rocket_cors::Responder<'_, '_, &str> {
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cors.responder("Hello CORS!")
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}
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/// The special "ping" route
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#[get("/ping")]
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fn ping<'r, 'o: 'r>() -> impl Responder<'r, 'o> {
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let cors = cors_options_all().to_cors()?;
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cors.respond_owned(|guard| guard.responder("Pong!"))
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}
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/// You need to define an OPTIONS route for preflight checks if you want to use `Cors` struct
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/// that is not in Rocket's managed state.
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/// These routes can just return the unit type `()`
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#[options("/ping")]
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fn ping_options<'r, 'o: 'r>() -> impl Responder<'r, 'o> {
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let cors = cors_options_all().to_cors()?;
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cors.respond_owned(|guard| guard.responder(()))
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}
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/// Returns the "application wide" Cors struct
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fn cors_options() -> CorsOptions {
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let allowed_origins = AllowedOrigins::some_exact(&["https://www.acme.com"]);
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// You can also deserialize this
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rocket_cors::CorsOptions {
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allowed_origins,
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allowed_methods: vec![Method::Get].into_iter().map(From::from).collect(),
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allowed_headers: AllowedHeaders::some(&["Authorization", "Accept"]),
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allow_credentials: true,
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..Default::default()
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}
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}
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/// A special struct that allows all origins
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///
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/// Note: In your real application, you might want to use something like `lazy_static` to generate
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/// a `&'static` reference to this instead of creating a new struct on every request.
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fn cors_options_all() -> CorsOptions {
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// You can also deserialize this
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Default::default()
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}
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#[rocket::main]
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async fn main() -> Result<(), Error> {
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rocket::build()
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.mount("/", routes![app, ping, ping_options,])
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.mount("/", rocket_cors::catch_all_options_routes()) // mount the catch all routes
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.manage(cors_options().to_cors().expect("To not fail"))
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.launch()
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.await
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}
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