From ecca0e8cef755899049e7f541c86b9d06b2438a4 Mon Sep 17 00:00:00 2001
From: Cara Salter <cara@devcara.com>
Date: Mon, 30 May 2022 00:24:40 -0400
Subject: meta: Add Bearer authentication

Makes use of a pre-shared key. Do not expose this to the internet!
---
 src/handlers/ships.rs | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

(limited to 'src/handlers')

diff --git a/src/handlers/ships.rs b/src/handlers/ships.rs
index 75f5dc5..42367ea 100644
--- a/src/handlers/ships.rs
+++ b/src/handlers/ships.rs
@@ -4,13 +4,13 @@ use axum::{Json, extract::Path, Extension};
 use hyper::StatusCode;
 use solarlib::ship::{Ship, DbShip, Sha256};
 use sqlx::{query_as, query, Error as SqlxError};
+use axum_auth::AuthBearer;
+use tracing::log::warn;
 
 use crate::{errors::{JsonResult, StringResult, ServiceError}, State};
 
 
 pub async fn list(state: Extension<Arc<State>>) -> JsonResult<Json<Vec<Ship>>> {
-    let mut result: Vec<Ship> = Vec::new();
-
     let mut conn = state.conn.acquire().await?;
 
     let db_ships = query_as!(DbShip, "SELECT * FROM ships").fetch_all(&mut conn).await?;
@@ -20,7 +20,8 @@ pub async fn list(state: Extension<Arc<State>>) -> JsonResult<Json<Vec<Ship>>> {
     Ok(Json(ships))
 }
 
-pub async fn new(Json(new_ship): Json<Ship>, state: Extension<Arc<State>>) -> StringResult {
+pub async fn new(Json(new_ship): Json<Ship>, state: Extension<Arc<State>>, AuthBearer(token): AuthBearer) -> StringResult {
+    check_bearer(token)?;
     let mut conn = state.conn.acquire().await?;
 
     query!("INSERT INTO ships (name, shasum, download_url, version) VALUES ($1, $2, $3, $4)", new_ship.name, new_ship.shasum.to_string(), new_ship.download_url, new_ship.version).execute(&mut conn).await?;
@@ -29,6 +30,7 @@ pub async fn new(Json(new_ship): Json<Ship>, state: Extension<Arc<State>>) -> St
 }
 
 pub async fn delete(Path(shasum): Path<Sha256>, state: Extension<Arc<State>>) -> StringResult {
+    check_bearer(token)?;
     let mut conn = state.conn.acquire().await?;
 
     query!("DELETE FROM ships WHERE shasum=$1", shasum.to_string()).execute(&mut conn).await?;
@@ -55,3 +57,19 @@ pub async fn get(Path(shasum): Path<Sha256>, state: Extension<Arc<State>>) -> Js
 
     Ok(Json(db_ship))
 }
+
+fn check_bearer(token: String) -> Result<(), ServiceError> {
+    let expected_token = match std::env::var("SHARED_KEY") {
+        Ok(t) => t,
+        Err(_) => {
+            warn!("No pre-shared key set in environment. This is not secure!");
+            "bad-key".into()
+        }
+    };
+
+    if token != expected_token {
+        Err(ServiceError::NotAuthorized)
+    } else {
+        Ok(())
+    }
+}
-- 
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