Files
k-tv/crates/presentation/src/extractors.rs

141 lines
4.4 KiB
Rust

use axum::extract::FromRequestParts;
use axum::http::request::Parts;
use domain::{DomainError, User};
use crate::errors::AppError;
use crate::state::AppState;
pub struct CurrentUser(pub User);
impl FromRequestParts<AppState> for CurrentUser {
type Rejection = AppError;
async fn from_request_parts(
parts: &mut Parts,
state: &AppState,
) -> Result<Self, Self::Rejection> {
#[cfg(feature = "auth-jwt")]
{
return match try_jwt_auth(parts, state).await {
Ok(user) => Ok(CurrentUser(user)),
Err(e) => Err(e),
};
}
#[cfg(not(feature = "auth-jwt"))]
{
let _ = (parts, state);
Err(AppError(DomainError::Unauthenticated(
"No authentication backend configured".to_string(),
)))
}
}
}
pub struct OptionalCurrentUser(pub Option<User>);
impl FromRequestParts<AppState> for OptionalCurrentUser {
type Rejection = AppError;
async fn from_request_parts(
parts: &mut Parts,
state: &AppState,
) -> Result<Self, Self::Rejection> {
#[cfg(feature = "auth-jwt")]
{
if let Ok(user) = try_jwt_auth(parts, state).await {
return Ok(OptionalCurrentUser(Some(user)));
}
let query_token = parts.uri.query().and_then(|q| {
q.split('&')
.find_map(|seg| seg.strip_prefix("token="))
.map(|v| v.to_owned())
});
if let Some(token) = query_token {
let user = validate_jwt_token(&token, state).await.ok();
return Ok(OptionalCurrentUser(user));
}
Ok(OptionalCurrentUser(None))
}
#[cfg(not(feature = "auth-jwt"))]
{
let _ = (parts, state);
Ok(OptionalCurrentUser(None))
}
}
}
pub struct AdminUser(pub User);
impl FromRequestParts<AppState> for AdminUser {
type Rejection = AppError;
async fn from_request_parts(
parts: &mut Parts,
state: &AppState,
) -> Result<Self, Self::Rejection> {
let CurrentUser(user) = CurrentUser::from_request_parts(parts, state).await?;
if !user.is_admin() {
return Err(AppError(DomainError::Forbidden("Admin access required".to_string())));
}
Ok(AdminUser(user))
}
}
#[cfg(feature = "auth-jwt")]
async fn try_jwt_auth(parts: &mut Parts, state: &AppState) -> Result<User, AppError> {
use axum::http::header::AUTHORIZATION;
let auth_header = parts
.headers
.get(AUTHORIZATION)
.ok_or_else(|| AppError(DomainError::Unauthenticated("Missing Authorization header".to_string())))?;
let auth_str = auth_header
.to_str()
.map_err(|_| AppError(DomainError::Unauthenticated("Invalid Authorization header encoding".to_string())))?;
let token = auth_str.strip_prefix("Bearer ").ok_or_else(|| {
AppError(DomainError::Unauthenticated("Authorization header must use Bearer scheme".to_string()))
})?;
validate_jwt_token(token, state).await
}
#[cfg(feature = "auth-jwt")]
pub(crate) async fn validate_jwt_token(token: &str, state: &AppState) -> Result<User, AppError> {
let validator = state
.jwt_validator
.as_ref()
.ok_or_else(|| AppError(DomainError::InfrastructureError("JWT validator not configured".to_string())))?;
let claims = validator.validate_access_token(token).map_err(|e| {
tracing::debug!("JWT validation failed: {:?}", e);
match e {
adapter_auth::JwtError::Expired => {
AppError(DomainError::Unauthenticated("Token expired".to_string()))
}
adapter_auth::JwtError::InvalidFormat => {
AppError(DomainError::Unauthenticated("Invalid token format".to_string()))
}
_ => AppError(DomainError::Unauthenticated("Token validation failed".to_string())),
}
})?;
let user_id: uuid::Uuid = claims
.sub
.parse()
.map_err(|_| AppError(DomainError::Unauthenticated("Invalid user ID in token".to_string())))?;
let user = state
.auth_deps
.user_query
.find_by_id(domain::UserId::from(user_id))
.await
.map_err(|e| AppError(DomainError::InfrastructureError(format!("Failed to fetch user: {}", e))))?
.ok_or_else(|| AppError(DomainError::Unauthenticated("User not found".to_string())))?;
Ok(user)
}