1 files changed, 109 insertions, 0 deletions
diff --git a/server/src/helper/session.rs b/server/src/helper/session.rs
new file mode 100644
index 0000000..b77f9fa
--- /dev/null
+++ b/server/src/helper/session.rs
@@ -0,0 +1,109 @@
+/*
+    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
+    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
+    Copyright (C) 2025 metamuffin <metamuffin.org>
+*/
+use crate::ui::error::MyError;
+use anyhow::anyhow;
+use jellybase::database::Database;
+use jellylogic::session::{validate, AdminSession, Session};
+use log::warn;
+use rocket::{
+    async_trait,
+    http::Status,
+    outcome::Outcome,
+    request::{self, FromRequest},
+    Request, State,
+};
+
+use super::A;
+
+impl A<Session> {
+    async fn from_request_ut(req: &Request<'_>) -> Result<Self, MyError> {
+        let username;
+
+        #[cfg(not(feature = "bypass-auth"))]
+        {
+            let token = req
+                .query_value("session")
+                .map(|e| e.unwrap())
+                .or_else(|| req.query_value("api_key").map(|e| e.unwrap()))
+                .or_else(|| req.headers().get_one("X-MediaBrowser-Token"))
+                .or_else(|| {
+                    req.headers()
+                        .get_one("Authorization")
+                        .and_then(parse_jellyfin_auth)
+                }) // for jellyfin compat
+                .or(req.cookies().get("session").map(|cookie| cookie.value()))
+                .ok_or(anyhow!("not logged in"))?;
+
+            // jellyfin urlescapes the token for *some* requests
+            let token = token.replace("%3D", "=");
+            username = validate(&token)?;
+        };
+
+        #[cfg(feature = "bypass-auth")]
+        {
+            parse_jellyfin_auth("a"); // unused warning is annoying
+            username = "admin".to_string();
+        }
+
+        let db = req.guard::<&State<Database>>().await.unwrap();
+
+        let user = db.get_user(&username)?.ok_or(anyhow!("user not found"))?;
+
+        Ok(A(Session { user }))
+    }
+}
+
+fn parse_jellyfin_auth(h: &str) -> Option<&str> {
+    for tok in h.split(" ") {
+        if let Some(tok) = tok.strip_prefix("Token=\"") {
+            if let Some(tok) = tok.strip_suffix("\"") {
+                return Some(tok);
+            }
+        }
+    }
+    None
+}
+
+#[async_trait]
+impl<'r> FromRequest<'r> for A<Session> {
+    type Error = MyError;
+    async fn from_request<'life0>(
+        request: &'r Request<'life0>,
+    ) -> request::Outcome<Self, Self::Error> {
+        match A::<Session>::from_request_ut(request).await {
+            Ok(x) => Outcome::Success(x),
+            Err(e) => {
+                warn!("authentificated route rejected: {e:?}");
+                Outcome::Forward(Status::Unauthorized)
+            }
+        }
+    }
+}
+
+#[async_trait]
+impl<'r> FromRequest<'r> for A<AdminSession> {
+    type Error = MyError;
+    async fn from_request<'life0>(
+        request: &'r Request<'life0>,
+    ) -> request::Outcome<Self, Self::Error> {
+        match A::<Session>::from_request_ut(request).await {
+            Ok(x) => {
+                if x.0.user.admin {
+                    Outcome::Success(A(AdminSession(x.0)))
+                } else {
+                    Outcome::Error((
+                        Status::Unauthorized,
+                        MyError(anyhow!("you are not an admin")),
+                    ))
+                }
+            }
+            Err(e) => {
+                warn!("authentificated route rejected: {e:?}");
+                Outcome::Forward(Status::Unauthorized)
+            }
+        }
+    }
+}