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lewis.moe
1mod common;
2
3use axum::{Router, extract::Request, http::StatusCode, routing::any};
4use base64::{Engine as _, engine::general_purpose::URL_SAFE_NO_PAD};
5use reqwest::Client;
6use std::sync::Arc;
7use tokio::net::TcpListener;
8
9async fn spawn_mock_upstream() -> (
10 String,
11 tokio::sync::mpsc::Receiver<(String, String, Option<String>)>,
12) {
13 let (tx, rx) = tokio::sync::mpsc::channel(10);
14 let tx = Arc::new(tx);
15
16 let app = Router::new().fallback(any(move |req: Request| {
17 let tx = tx.clone();
18 async move {
19 let method = req.method().to_string();
20 let uri = req.uri().to_string();
21 let auth = req
22 .headers()
23 .get("Authorization")
24 .and_then(|h| h.to_str().ok())
25 .map(|s| s.to_string());
26
27 let _ = tx.send((method, uri, auth)).await;
28 (StatusCode::OK, "Mock Response")
29 }
30 }));
31
32 let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
33 let addr = listener.local_addr().unwrap();
34
35 tokio::spawn(async move {
36 axum::serve(listener, app).await.unwrap();
37 });
38
39 (format!("http://{}", addr), rx)
40}
41
42#[tokio::test]
43async fn test_proxy_via_header() {
44 let app_url = common::base_url().await;
45 let (upstream_url, mut rx) = spawn_mock_upstream().await;
46 let client = Client::new();
47
48 let res = client
49 .get(format!("{}/xrpc/com.example.test", app_url))
50 .header("atproto-proxy", &upstream_url)
51 .header("Authorization", "Bearer test-token")
52 .send()
53 .await
54 .unwrap();
55
56 assert_eq!(res.status(), StatusCode::OK);
57
58 let (method, uri, auth) = rx.recv().await.expect("Upstream should receive request");
59 assert_eq!(method, "GET");
60 assert_eq!(uri, "/xrpc/com.example.test");
61 assert_eq!(auth, Some("Bearer test-token".to_string()));
62}
63
64#[tokio::test]
65#[ignore]
66async fn test_proxy_via_env_var() {
67 let (upstream_url, mut rx) = spawn_mock_upstream().await;
68
69 unsafe {
70 std::env::set_var("APPVIEW_URL", &upstream_url);
71 }
72
73 let app_url = common::base_url().await;
74 let client = Client::new();
75
76 let res = client
77 .get(format!("{}/xrpc/com.example.envtest", app_url))
78 .send()
79 .await
80 .unwrap();
81
82 assert_eq!(res.status(), StatusCode::OK);
83
84 let (method, uri, _) = rx.recv().await.expect("Upstream should receive request");
85 assert_eq!(method, "GET");
86 assert_eq!(uri, "/xrpc/com.example.envtest");
87}
88
89#[tokio::test]
90#[ignore]
91async fn test_proxy_missing_config() {
92 unsafe {
93 std::env::remove_var("APPVIEW_URL");
94 }
95
96 let app_url = common::base_url().await;
97 let client = Client::new();
98
99 let res = client
100 .get(format!("{}/xrpc/com.example.fail", app_url))
101 .send()
102 .await
103 .unwrap();
104
105 assert_eq!(res.status(), StatusCode::BAD_GATEWAY);
106}
107
108#[tokio::test]
109async fn test_proxy_auth_signing() {
110 let app_url = common::base_url().await;
111 let (upstream_url, mut rx) = spawn_mock_upstream().await;
112 let client = Client::new();
113
114 let (access_jwt, did) = common::create_account_and_login(&client).await;
115
116 let res = client
117 .get(format!("{}/xrpc/com.example.signed", app_url))
118 .header("atproto-proxy", &upstream_url)
119 .header("Authorization", format!("Bearer {}", access_jwt))
120 .send()
121 .await
122 .unwrap();
123
124 assert_eq!(res.status(), StatusCode::OK);
125
126 let (method, uri, auth) = rx.recv().await.expect("Upstream receive");
127 assert_eq!(method, "GET");
128 assert_eq!(uri, "/xrpc/com.example.signed");
129
130 let received_token = auth.expect("No auth header").replace("Bearer ", "");
131 assert_ne!(received_token, access_jwt, "Token should be replaced");
132
133 let parts: Vec<&str> = received_token.split('.').collect();
134 assert_eq!(parts.len(), 3);
135
136 let payload_bytes = URL_SAFE_NO_PAD.decode(parts[1]).expect("payload b64");
137 let claims: serde_json::Value = serde_json::from_slice(&payload_bytes).expect("payload json");
138
139 assert_eq!(claims["iss"], did);
140 assert_eq!(claims["sub"], did);
141 assert_eq!(claims["aud"], upstream_url);
142 assert_eq!(claims["lxm"], "com.example.signed");
143}