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use std::io::Read;
use axum::{
async_trait,
body::HttpBody,
extract::{FromRequest, FromRequestParts},
headers::Cookie,
http::{request::Parts, Request},
response::Response,
BoxError, RequestExt, TypedHeader,
};
use axum_client_ip::ClientIp;
use bytes::Bytes;
use serde::de::DeserializeOwned;
use crate::{
console,
types::{
http::{ResponseCode, Result},
session::Session,
user::User,
},
};
pub struct AuthorizedUser(pub User);
#[async_trait]
impl<S> FromRequestParts<S> for AuthorizedUser
where
S: Send + Sync,
{
type Rejection = Response;
async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self> {
let Ok(Some(cookies)) = Option::<TypedHeader<Cookie>>::from_request_parts(parts, state).await else {
return Err(ResponseCode::Forbidden.text("No cookies provided"))
};
let Some(token) = cookies.get("auth") else {
return Err(ResponseCode::Forbidden.text("No auth token provided"))
};
let Ok(session) = Session::from_token(token) else {
return Err(ResponseCode::Unauthorized.text("Auth token invalid"))
};
let Ok(user) = User::from_user_id(session.user_id, true) else {
tracing::error!("Valid token but no valid user");
return Err(ResponseCode::InternalServerError.text("Valid token but no valid user"))
};
Ok(Self(user))
}
}
pub struct Log;
#[async_trait]
impl<S, B> FromRequest<S, B> for Log
where
B: HttpBody + Sync + Send + 'static,
B::Data: Send,
B::Error: Into<BoxError>,
S: Send + Sync,
{
type Rejection = Response;
async fn from_request(req: Request<B>, state: &S) -> Result<Self> {
parse_body(req, state).await?;
Ok(Self)
}
}
pub struct Json<T>(pub T);
#[async_trait]
impl<T, S, B> FromRequest<S, B> for Json<T>
where
T: DeserializeOwned + Check,
B: HttpBody + Sync + Send + 'static,
B::Data: Send,
B::Error: Into<BoxError>,
S: Send + Sync,
{
type Rejection = Response;
async fn from_request(req: Request<B>, state: &S) -> Result<Self> {
let body = match parse_body(req, state).await {
Ok(body) => body,
Err(err) => return Err(err),
};
let Ok(value) = serde_json::from_str::<T>(&body) else {
return Err(ResponseCode::BadRequest.text("Invalid request body"))
};
if let Err(msg) = value.check() {
return Err(ResponseCode::BadRequest.text(&msg));
}
Ok(Self(value))
}
}
pub type CheckResult = std::result::Result<(), String>;
pub trait Check {
fn check(&self) -> CheckResult;
fn assert_length(string: &str, min: usize, max: usize, message: &str) -> CheckResult {
if string.len() < min || string.len() > max {
return Err(message.to_string());
}
Ok(())
}
fn assert_range(number: u64, min: u64, max: u64, message: &str) -> CheckResult {
if number < min || number > max {
return Err(message.to_string());
}
Ok(())
}
}
pub async fn parse_body<S, B>(mut req: Request<B>, state: &S) -> Result<String>
where
B: HttpBody + Sync + Send + 'static,
B::Data: Send,
B::Error: Into<BoxError>,
S: Send + Sync,
{
let Ok(ClientIp(ip)) = req.extract_parts::<ClientIp>().await else {
tracing::error!("Failed to read client ip");
return Err(ResponseCode::InternalServerError.text("Failed to read client ip"));
};
let method = req.method().clone();
let uri = req.uri().clone();
let path = req
.extensions()
.get::<RouterURI>()
.map_or("", |path| path.0);
let Ok(bytes) = Bytes::from_request(req, state).await else {
tracing::error!("Failed to read request body");
return Err(ResponseCode::InternalServerError.text("Failed to read request body"));
};
let Ok(body) = String::from_utf8(bytes.bytes().flatten().collect()) else {
return Err(ResponseCode::BadRequest.text("Invalid utf8 body"))
};
console::log(
ip,
method,
uri,
Some(path.to_string()),
Some(body.to_string()),
)
.await;
Ok(body)
}
#[derive(Clone)]
pub struct RouterURI(pub &'static str);
|
