132 lines
3.7 KiB
Rust
132 lines
3.7 KiB
Rust
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// Copyright (C) 2023-2099 The crate authors.
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//
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// This program is free software: you can redistribute it and/or modify it
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// under the terms of the GNU Affero General Public License as published by the
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// Free Software Foundation, either version 3 of the License, or (at your
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// option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
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// for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#![feature(let_chains)]
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use std::convert::Infallible;
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use std::error::Error as StdError;
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use std::net::SocketAddr;
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use std::str::{from_utf8, Utf8Error};
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use gitlab::webhooks::WebHook;
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use hyper::{
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body, Body, header, Method, Request, Response, Server,
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service::{make_service_fn, service_fn},
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};
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use log::{debug, error};
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#[derive(Debug)]
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enum Error {
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MethodMismatch,
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InvalidToken,
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InvalidContentType,
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Hyper(hyper::Error),
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SerdeJson(serde_json::Error),
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Utf8(Utf8Error),
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}
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impl StdError for Error {}
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impl std::fmt::Display for Error {
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fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
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match self {
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Error::MethodMismatch => write!(fmt, "the method is invalid"),
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Error::InvalidToken => write!(fmt, "the token is invalid"),
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Error::InvalidContentType => write!(fmt, "the content-type is invalid"),
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Error::Hyper(e) => write!(fmt, "hyper error: {}", e),
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Error::SerdeJson(e) => write!(fmt, "serde_json error: {}", e),
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Error::Utf8(e) => write!(fmt, "Utf8 error: {}", e),
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}
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}
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}
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impl From<hyper::Error> for Error {
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fn from(err: hyper::Error) -> Error {
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Error::Hyper(err)
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}
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}
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impl From<serde_json::Error> for Error {
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fn from(err: serde_json::Error) -> Error {
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Error::SerdeJson(err)
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}
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}
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impl From<Utf8Error> for Error {
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fn from(err: Utf8Error) -> Error {
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Error::Utf8(err)
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}
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}
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fn error_res<E: std::fmt::Debug>(e: E) -> Result<Response<Body>, Infallible> {
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error!("error response: {:?}", e);
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let text = format!("{:?}", e);
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let res = Response::builder()
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.status(400)
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.body(Body::from(Vec::from(text.as_bytes())))
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.unwrap();
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Ok(res)
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}
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async fn webhooks(req: Request<Body>) -> Result<Response<Body>, Error> {
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match req.method() {
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&Method::POST => (),
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_ => return Err(Error::MethodMismatch),
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}
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debug!("Headers: {:?}", req.headers());
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let headers = req.headers();
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if let Some(content_type) = headers.get(header::CONTENT_TYPE) &&
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let Some(token) = headers.get("X-Gitlab-Token") {
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if content_type != "application/json" {
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return Err(Error::InvalidContentType);
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}
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if token != "secret" {
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return Err(Error::InvalidToken);
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}
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}
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let tmp = body::to_bytes(req.into_body()).await?;
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let text: &str = from_utf8(&tmp)?;
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let json: WebHook = serde_json::from_str(text)?;
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debug!("Passed: {:?}", json);
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Ok(Response::new("Hello world".into()))
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}
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async fn wrapper(req: Request<Body>) -> Result<Response<Body>, Infallible> {
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webhooks(req).await.or_else(error_res)
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}
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#[tokio::main]
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async fn main() {
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pretty_env_logger::init();
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let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
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let make_svc = make_service_fn(|_conn| async {
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Ok::<_, Infallible>(service_fn(wrapper))
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});
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let server = Server::bind(&addr).serve(make_svc);
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println!("Listening on http://{}", addr);
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if let Err(e) = server.await {
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eprintln!("Server error: {e}");
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}
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}
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