How to Implement OAuth2 in Rust

Security Hardening
2026-04-17T12:05:42+00:00
Use the `oauth2` crate to handle the authorization code flow by defining a client, initiating the flow, and exchanging the code for tokens.

How to Implement OAuth2 in Rust

Use the oauth2 crate to handle the authorization code flow by defining a client, initiating the flow, and exchanging the code for tokens.

use oauth2::{AuthUrl, Client, ClientId, ClientSecret, CsrfToken, PkceCodeChallenge, RedirectUrl, TokenUrl};

fn main() {
    let auth_url = AuthUrl::new("https://example.com/oauth2/auth".to_string()).unwrap();
    let token_url = TokenUrl::new("https://example.com/oauth2/token".to_string()).unwrap();
    let client = Client::new(
        ClientId::new("client_id".to_string()),
        Some(ClientSecret::new("client_secret".to_string())),
        auth_url,
        Some(token_url),
    ).add_redirect_uri(RedirectUrl::new("http://localhost:8080/callback".to_string()).unwrap());

    let (auth_url, state) = client
        .authorize_url(CsrfToken::new_random)
        .unwrap();

    // Exchange code for token after redirect
    // let code = ...; // Obtain code from redirect
    // let token = client.exchange_code(&code).unwrap();
}