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use crate::*;
use anyhow::Error;
use chrono::{NaiveDateTime, Utc};
use http::header::{HeaderValue, SET_COOKIE};
use http::{Request, Response};
use hyper::Body;
use ring::hmac::Key;
use serde::{de::DeserializeOwned, Serialize};
use std::{fmt::Debug, ops::Deref, sync::Arc};
use uuid::Uuid;
pub type DynSessionStore<T> = Arc<dyn SessionStore<Value = T>>;
#[async_trait]
pub trait SessionStore: 'static + Send + Sync + Debug {
type Value: Clone + DeserializeOwned + Serialize + Send + Sync;
fn into_dyn(self) -> DynSessionStore<Self::Value>
where
Self: Sized,
{
Arc::new(self) as DynSessionStore<Self::Value>
}
fn key(&self) -> &Key;
fn key_name(&self) -> &str;
async fn set(&self, prefix: Option<String>, session_id: &Uuid, session: &Session<Self::Value>)
-> Result<(), Error>;
async fn get(&self, session_id: &Uuid) -> Result<Session<Self::Value>, Error>;
async fn delete(&self, session_id: &Uuid) -> Result<(), Error>;
async fn store_session_and_set_cookie(
&self,
res: &mut Response<Body>,
cookie_config: CookieConfig<'_, Self::Value>,
prefix: Option<String>,
) -> Result<(), Error> {
let cookie_value = CookieValue::new(self.key())?;
let session = Session {
session_id: cookie_value.id,
created_at: Utc::now().naive_utc(),
value: cookie_config.value.clone(),
max_age: cookie_config.max_age,
expires: cookie_config.expires,
};
let mut cookie = format!(
"{}={}; SameSite={}",
self.key_name(),
cookie_value.encode(),
cookie_config.same_site
);
if cookie_config.http_only {
cookie = format!("{cookie}; HttpOnly");
}
if cookie_config.secure {
cookie = format!("{cookie}; Secure");
}
if let Some(domain) = cookie_config.domain {
cookie = format!("{cookie}; Domain={domain}");
}
if let Some(path) = cookie_config.path {
cookie = format!("{cookie}; Path={path}");
}
if let Some(max_age) = cookie_config.max_age {
cookie = format!("{cookie}; Max-Age={}", max_age.num_seconds());
}
if let Some(expires) = cookie_config.expires {
cookie = format!("{cookie}; Expires={}", expires.format("%a, %d %b %Y %H:%M:%S GMT"));
}
let header_value = HeaderValue::from_str(&cookie).map_err(Error::msg)?;
self.set(prefix, &session.session_id, &session).await?;
res.headers_mut().append(SET_COOKIE, header_value);
Ok(())
}
async fn delete_session(
&self,
res: &mut Response<Body>,
cookie_config: CookieConfig<'_, ()>,
session_id: Option<&Uuid>,
) -> Result<(), Error> {
let mut cookie = format!("{}=; SameSite={}", self.key_name(), cookie_config.same_site);
if cookie_config.http_only {
cookie = format!("{cookie}; HttpOnly");
}
if cookie_config.secure {
cookie = format!("{cookie}; Secure");
}
if let Some(domain) = cookie_config.domain {
cookie = format!("{cookie}; Domain={domain}");
}
if let Some(path) = cookie_config.path {
cookie = format!("{cookie}; Path={path}");
}
cookie = format!(
"{cookie}; Expires={}",
NaiveDateTime::from_timestamp_opt(0, 0)
.unwrap()
.format("%a, %d %b %Y %H:%M:%S GMT")
);
let header_value = HeaderValue::from_str(&cookie).map_err(Error::msg)?;
if let Some(session_id) = session_id {
self.delete(session_id).await?;
}
res.headers_mut().append(SET_COOKIE, header_value);
Ok(())
}
}
#[async_trait]
impl<S: SessionStore + ?Sized, Wrapper: 'static + Debug + Deref<Target = S> + Send + Sync> SessionStore for Wrapper {
type Value = S::Value;
fn key(&self) -> &Key {
self.deref().key()
}
fn key_name(&self) -> &str {
self.deref().key_name()
}
async fn set(
&self,
prefix: Option<String>,
session_id: &Uuid,
session: &Session<Self::Value>,
) -> Result<(), Error> {
self.deref().set(prefix, session_id, session).await
}
async fn get(&self, session_id: &Uuid) -> Result<Session<Self::Value>, Error> {
self.deref().get(session_id).await
}
async fn delete(&self, session_id: &Uuid) -> Result<(), Error> {
self.deref().delete(session_id).await
}
async fn store_session_and_set_cookie(
&self,
res: &mut Response<Body>,
cookie_config: CookieConfig<'_, Self::Value>,
prefix: Option<String>,
) -> Result<(), Error> {
self.deref()
.store_session_and_set_cookie(res, cookie_config, prefix)
.await
}
async fn delete_session(
&self,
res: &mut Response<Body>,
cookie_config: CookieConfig<'_, ()>,
session_id: Option<&Uuid>,
) -> Result<(), Error> {
self.deref().delete_session(res, cookie_config, session_id).await
}
}
pub trait SessionValue<ReqBody: Sync, S: SessionStore> {
fn get_unparsed_request_session(store: &S, req: &Request<ReqBody>) -> Result<RequestSession<S::Value>, Error> {
match get_session_id_from_request(store, req) {
Some(session_id) => Ok(RequestSession::SessionId(session_id)),
None => Ok(RequestSession::None),
}
}
}