Files
k-template/template-api/src/auth.rs
2026-01-02 05:27:44 +01:00

102 lines
2.6 KiB
Rust

//! Authentication logic using axum-login
use std::sync::Arc;
use axum_login::{AuthnBackend, UserId};
use password_auth::verify_password;
use serde::{Deserialize, Serialize};
use uuid::Uuid;
use template_infra::session_store::InfraSessionStore;
use tower_sessions::SessionManagerLayer;
use crate::error::ApiError;
use template_domain::{User, UserRepository};
/// Wrapper around domain User to implement AuthUser
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AuthUser(pub User);
impl axum_login::AuthUser for AuthUser {
type Id = Uuid;
fn id(&self) -> Self::Id {
self.0.id
}
fn session_auth_hash(&self) -> &[u8] {
// Use password hash to invalidate sessions if password changes
self.0
.password_hash
.as_ref()
.map(|s| s.as_bytes())
.unwrap_or(&[])
}
}
#[derive(Clone)]
pub struct AuthBackend {
pub user_repo: Arc<dyn UserRepository>,
}
impl AuthBackend {
pub fn new(user_repo: Arc<dyn UserRepository>) -> Self {
Self { user_repo }
}
}
#[derive(Clone, Debug, Deserialize)]
pub struct Credentials {
pub email: String,
pub password: String,
}
impl AuthnBackend for AuthBackend {
type User = AuthUser;
type Credentials = Credentials;
type Error = ApiError;
async fn authenticate(
&self,
creds: Self::Credentials,
) -> Result<Option<Self::User>, Self::Error> {
let user = self
.user_repo
.find_by_email(&creds.email)
.await
.map_err(|e| ApiError::internal(e.to_string()))?;
if let Some(user) = user {
if let Some(hash) = &user.password_hash {
// Verify password
if verify_password(&creds.password, hash).is_ok() {
return Ok(Some(AuthUser(user)));
}
}
}
Ok(None)
}
async fn get_user(&self, user_id: &UserId<Self>) -> Result<Option<Self::User>, Self::Error> {
let user = self
.user_repo
.find_by_id(*user_id)
.await
.map_err(|e| ApiError::internal(e.to_string()))?;
Ok(user.map(AuthUser))
}
}
pub type AuthSession = axum_login::AuthSession<AuthBackend>;
pub async fn setup_auth_layer(
session_layer: SessionManagerLayer<InfraSessionStore>,
user_repo: Arc<dyn UserRepository>,
) -> Result<axum_login::AuthManagerLayer<AuthBackend, InfraSessionStore>, ApiError> {
let backend = AuthBackend::new(user_repo);
let auth_layer = axum_login::AuthManagerLayerBuilder::new(backend, session_layer).build();
Ok(auth_layer)
}