zed/crates/collab/src/api.rs

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use crate::{
auth,
db::{User, UserId},
AppState, Error, Result,
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};
use anyhow::anyhow;
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use axum::{
body::Body,
extract::{Path, Query},
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http::{self, Request, StatusCode},
middleware::{self, Next},
response::IntoResponse,
routing::{get, post, put},
Extension, Json, Router,
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};
use serde::{Deserialize, Serialize};
use std::sync::Arc;
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use tower::ServiceBuilder;
use tracing::instrument;
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pub fn routes(state: Arc<AppState>) -> Router<Body> {
Router::new()
.route("/users", get(get_users).post(create_user))
.route(
"/users/:id",
put(update_user).delete(destroy_user).get(get_user),
)
.route("/users/:id/access_tokens", post(create_access_token))
.route("/crash", post(trace_crash))
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.layer(
ServiceBuilder::new()
.layer(Extension(state))
.layer(middleware::from_fn(validate_api_token)),
)
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// TODO: Compression on API routes?
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}
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pub async fn validate_api_token<B>(req: Request<B>, next: Next<B>) -> impl IntoResponse {
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let token = req
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.headers()
.get(http::header::AUTHORIZATION)
.and_then(|header| header.to_str().ok())
.ok_or_else(|| {
Error::Http(
StatusCode::BAD_REQUEST,
"missing authorization header".to_string(),
)
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})?
.strip_prefix("token ")
.ok_or_else(|| {
Error::Http(
StatusCode::BAD_REQUEST,
"invalid authorization header".to_string(),
)
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})?;
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let state = req.extensions().get::<Arc<AppState>>().unwrap();
if token != state.api_token {
Err(Error::Http(
StatusCode::UNAUTHORIZED,
"invalid authorization token".to_string(),
))?
}
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Ok::<_, Error>(next.run(req).await)
}
async fn get_users(Extension(app): Extension<Arc<AppState>>) -> Result<Json<Vec<User>>> {
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let users = app.db.get_all_users().await?;
Ok(Json(users))
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}
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#[derive(Deserialize)]
struct CreateUserParams {
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github_login: String,
admin: bool,
}
async fn create_user(
Json(params): Json<CreateUserParams>,
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Extension(app): Extension<Arc<AppState>>,
) -> Result<Json<User>> {
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let user_id = app
.db
.create_user(&params.github_login, params.admin)
.await?;
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let user = app
.db
.get_user_by_id(user_id)
.await?
.ok_or_else(|| anyhow!("couldn't find the user we just created"))?;
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Ok(Json(user))
}
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#[derive(Deserialize)]
struct UpdateUserParams {
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admin: bool,
}
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async fn update_user(
Path(user_id): Path<i32>,
Json(params): Json<UpdateUserParams>,
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Extension(app): Extension<Arc<AppState>>,
) -> Result<()> {
app.db
.set_user_is_admin(UserId(user_id), params.admin)
.await?;
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Ok(())
}
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async fn destroy_user(
Path(user_id): Path<i32>,
Extension(app): Extension<Arc<AppState>>,
) -> Result<()> {
app.db.destroy_user(UserId(user_id)).await?;
Ok(())
}
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async fn get_user(
Path(login): Path<String>,
Extension(app): Extension<Arc<AppState>>,
) -> Result<Json<User>> {
let user = app
.db
.get_user_by_github_login(&login)
.await?
.ok_or_else(|| anyhow!("user not found"))?;
Ok(Json(user))
}
#[derive(Debug, Deserialize)]
struct Crash {
version: String,
text: String,
}
#[instrument(skip(crash))]
async fn trace_crash(crash: Json<Crash>) -> Result<()> {
tracing::error!(version = %crash.version, text = %crash.text, "crash report");
Ok(())
}
#[derive(Deserialize)]
struct CreateAccessTokenQueryParams {
public_key: String,
impersonate: Option<String>,
}
#[derive(Serialize)]
struct CreateAccessTokenResponse {
user_id: UserId,
encrypted_access_token: String,
}
async fn create_access_token(
Path(login): Path<String>,
Query(params): Query<CreateAccessTokenQueryParams>,
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Extension(app): Extension<Arc<AppState>>,
) -> Result<Json<CreateAccessTokenResponse>> {
// request.require_token().await?;
let user = app
.db
.get_user_by_github_login(&login)
.await?
.ok_or_else(|| anyhow!("user not found"))?;
let mut user_id = user.id;
if let Some(impersonate) = params.impersonate {
if user.admin {
if let Some(impersonated_user) = app.db.get_user_by_github_login(&impersonate).await? {
user_id = impersonated_user.id;
} else {
return Err(Error::Http(
StatusCode::UNPROCESSABLE_ENTITY,
format!("user {impersonate} does not exist"),
));
}
} else {
return Err(Error::Http(
StatusCode::UNAUTHORIZED,
format!("you do not have permission to impersonate other users"),
));
}
}
let access_token = auth::create_access_token(app.db.as_ref(), user_id).await?;
let encrypted_access_token =
auth::encrypt_access_token(&access_token, params.public_key.clone())?;
Ok(Json(CreateAccessTokenResponse {
user_id,
encrypted_access_token,
}))
}