como/crates/como_auth/src/auth.rs
kjuulh 6e16fc6b2b
feat: move project to crates
Signed-off-by: kjuulh <contact@kjuulh.io>
2023-10-21 11:14:58 +02:00

129 lines
3.7 KiB
Rust

use std::{ops::Deref, sync::Arc};
use anyhow::Context;
use async_trait::async_trait;
use axum::http::{header::SET_COOKIE, HeaderMap};
use oauth2::url::Url;
use crate::{
introspection::IntrospectionService,
oauth::{OAuth, ZitadelConfig},
session::{SessionService, User},
AuthClap, AuthEngine,
};
#[async_trait]
pub trait Auth {
async fn login(&self) -> anyhow::Result<Url>;
async fn login_token(&self, user: &str, password: &str) -> anyhow::Result<String>;
async fn login_authorized(&self, code: &str, state: &str) -> anyhow::Result<(HeaderMap, Url)>;
async fn get_user_from_session(&self, cookie: &str) -> anyhow::Result<User>;
}
#[derive(Clone)]
pub struct AuthService(Arc<dyn Auth + Send + Sync + 'static>);
impl AuthService {
pub async fn new(config: &AuthClap, session: SessionService) -> anyhow::Result<Self> {
match config.engine {
AuthEngine::Noop => Ok(Self::new_noop()),
AuthEngine::Zitadel => {
let oauth: OAuth = ZitadelConfig::try_from(config.zitadel.clone())?.into();
let introspection: IntrospectionService =
IntrospectionService::new_zitadel(config).await?;
Ok(Self::new_zitadel(oauth, introspection, session))
}
}
}
pub fn new_zitadel(
oauth: OAuth,
introspection: IntrospectionService,
session: SessionService,
) -> Self {
Self(Arc::new(ZitadelAuthService {
oauth,
introspection,
session,
}))
}
pub fn new_noop() -> Self {
Self(Arc::new(NoopAuthService {}))
}
}
impl Deref for AuthService {
type Target = Arc<dyn Auth + Send + Sync + 'static>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
pub struct ZitadelAuthService {
oauth: OAuth,
introspection: IntrospectionService,
session: SessionService,
}
pub static COOKIE_NAME: &str = "SESSION";
#[async_trait]
impl Auth for ZitadelAuthService {
async fn login(&self) -> anyhow::Result<Url> {
let authorize_url = self.oauth.authorize_url().await?;
Ok(authorize_url)
}
async fn login_authorized(&self, code: &str, _state: &str) -> anyhow::Result<(HeaderMap, Url)> {
let token = self.oauth.exchange(code).await?;
let user_id = self.introspection.get_id_token(token.as_str()).await?;
let cookie_value = self.session.insert_user("user", user_id.as_str()).await?;
let cookie = format!("{}={}; SameSite=Lax; Path=/", COOKIE_NAME, cookie_value);
let mut headers = HeaderMap::new();
headers.insert(SET_COOKIE, cookie.parse().unwrap());
Ok((
headers,
Url::parse("http://localhost:3000/dash/home")
.context("failed to parse login_authorized zitadel return url")?,
))
}
async fn login_token(&self, _user: &str, password: &str) -> anyhow::Result<String> {
self.introspection.get_id_token(password).await
}
async fn get_user_from_session(&self, cookie: &str) -> anyhow::Result<User> {
match self.session.get_user(cookie).await? {
Some(u) => Ok(User { id: u }),
None => Err(anyhow::anyhow!("failed to find user")),
}
}
}
pub struct NoopAuthService {}
#[async_trait]
impl Auth for NoopAuthService {
async fn login(&self) -> anyhow::Result<Url> {
todo!()
}
async fn login_authorized(
&self,
_code: &str,
_state: &str,
) -> anyhow::Result<(HeaderMap, Url)> {
todo!()
}
async fn login_token(&self, _user: &str, _password: &str) -> anyhow::Result<String> {
todo!()
}
async fn get_user_from_session(&self, _cookie: &str) -> anyhow::Result<User> {
todo!()
}
}