1use crate::{
2 auth,
3 db::{User, UserId},
4 AppState, Error, Result,
5};
6use anyhow::anyhow;
7use axum::{
8 body::Body,
9 extract::{Path, Query},
10 http::{self, Request, StatusCode},
11 middleware::{self, Next},
12 response::IntoResponse,
13 routing::{get, post, put},
14 Extension, Json, Router,
15};
16use serde::{Deserialize, Serialize};
17use std::sync::Arc;
18use tower::ServiceBuilder;
19use tracing::instrument;
20
21pub fn routes(state: Arc<AppState>) -> Router<Body> {
22 Router::new()
23 .route("/users", get(get_users).post(create_user))
24 .route(
25 "/users/:id",
26 put(update_user).delete(destroy_user).get(get_user),
27 )
28 .route("/users/:id/access_tokens", post(create_access_token))
29 .route("/panic", post(trace_panic))
30 .layer(
31 ServiceBuilder::new()
32 .layer(Extension(state))
33 .layer(middleware::from_fn(validate_api_token)),
34 )
35 // TODO: Compression on API routes?
36}
37
38pub async fn validate_api_token<B>(req: Request<B>, next: Next<B>) -> impl IntoResponse {
39 let token = req
40 .headers()
41 .get(http::header::AUTHORIZATION)
42 .and_then(|header| header.to_str().ok())
43 .ok_or_else(|| {
44 Error::Http(
45 StatusCode::BAD_REQUEST,
46 "missing authorization header".to_string(),
47 )
48 })?
49 .strip_prefix("token ")
50 .ok_or_else(|| {
51 Error::Http(
52 StatusCode::BAD_REQUEST,
53 "invalid authorization header".to_string(),
54 )
55 })?;
56
57 let state = req.extensions().get::<Arc<AppState>>().unwrap();
58
59 if token != state.api_token {
60 Err(Error::Http(
61 StatusCode::UNAUTHORIZED,
62 "invalid authorization token".to_string(),
63 ))?
64 }
65
66 Ok::<_, Error>(next.run(req).await)
67}
68
69async fn get_users(Extension(app): Extension<Arc<AppState>>) -> Result<Json<Vec<User>>> {
70 let users = app.db.get_all_users().await?;
71 Ok(Json(users))
72}
73
74#[derive(Deserialize)]
75struct CreateUserParams {
76 github_login: String,
77 admin: bool,
78}
79
80async fn create_user(
81 Json(params): Json<CreateUserParams>,
82 Extension(app): Extension<Arc<AppState>>,
83) -> Result<Json<User>> {
84 let user_id = app
85 .db
86 .create_user(¶ms.github_login, params.admin)
87 .await?;
88
89 let user = app
90 .db
91 .get_user_by_id(user_id)
92 .await?
93 .ok_or_else(|| anyhow!("couldn't find the user we just created"))?;
94
95 Ok(Json(user))
96}
97
98#[derive(Deserialize)]
99struct UpdateUserParams {
100 admin: bool,
101}
102
103async fn update_user(
104 Path(user_id): Path<i32>,
105 Json(params): Json<UpdateUserParams>,
106 Extension(app): Extension<Arc<AppState>>,
107) -> Result<()> {
108 app.db
109 .set_user_is_admin(UserId(user_id), params.admin)
110 .await?;
111 Ok(())
112}
113
114async fn destroy_user(
115 Path(user_id): Path<i32>,
116 Extension(app): Extension<Arc<AppState>>,
117) -> Result<()> {
118 app.db.destroy_user(UserId(user_id)).await?;
119 Ok(())
120}
121
122async fn get_user(
123 Path(login): Path<String>,
124 Extension(app): Extension<Arc<AppState>>,
125) -> Result<Json<User>> {
126 let user = app
127 .db
128 .get_user_by_github_login(&login)
129 .await?
130 .ok_or_else(|| anyhow!("user not found"))?;
131 Ok(Json(user))
132}
133
134#[derive(Debug, Deserialize)]
135struct Panic {
136 version: String,
137 text: String,
138}
139
140#[instrument(skip(panic))]
141async fn trace_panic(panic: Json<Panic>) -> Result<()> {
142 tracing::error!(version = %panic.version, text = %panic.text, "panic report");
143 Ok(())
144}
145
146#[derive(Deserialize)]
147struct CreateAccessTokenQueryParams {
148 public_key: String,
149 impersonate: Option<String>,
150}
151
152#[derive(Serialize)]
153struct CreateAccessTokenResponse {
154 user_id: UserId,
155 encrypted_access_token: String,
156}
157
158async fn create_access_token(
159 Path(login): Path<String>,
160 Query(params): Query<CreateAccessTokenQueryParams>,
161 Extension(app): Extension<Arc<AppState>>,
162) -> Result<Json<CreateAccessTokenResponse>> {
163 // request.require_token().await?;
164
165 let user = app
166 .db
167 .get_user_by_github_login(&login)
168 .await?
169 .ok_or_else(|| anyhow!("user not found"))?;
170
171 let mut user_id = user.id;
172 if let Some(impersonate) = params.impersonate {
173 if user.admin {
174 if let Some(impersonated_user) = app.db.get_user_by_github_login(&impersonate).await? {
175 user_id = impersonated_user.id;
176 } else {
177 return Err(Error::Http(
178 StatusCode::UNPROCESSABLE_ENTITY,
179 format!("user {impersonate} does not exist"),
180 ));
181 }
182 } else {
183 return Err(Error::Http(
184 StatusCode::UNAUTHORIZED,
185 format!("you do not have permission to impersonate other users"),
186 ));
187 }
188 }
189
190 let access_token = auth::create_access_token(app.db.as_ref(), user_id).await?;
191 let encrypted_access_token =
192 auth::encrypt_access_token(&access_token, params.public_key.clone())?;
193
194 Ok(Json(CreateAccessTokenResponse {
195 user_id,
196 encrypted_access_token,
197 }))
198}