152 lines
4 KiB
Rust
152 lines
4 KiB
Rust
use actix::clock::Duration;
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use actix_web::{body::BodyStream, http::StatusCode, *};
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use awc::Client;
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use lemmy_api::claims::Claims;
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use lemmy_utils::{rate_limit::RateLimit, settings::Settings};
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use serde::{Deserialize, Serialize};
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pub fn config(cfg: &mut web::ServiceConfig, rate_limit: &RateLimit) {
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let client = Client::builder()
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.header("User-Agent", "pict-rs-frontend, v0.1.0")
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.timeout(Duration::from_secs(30))
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.finish();
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cfg
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.data(client)
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.service(
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web::resource("/pictrs/image")
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.wrap(rate_limit.image())
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.route(web::post().to(upload)),
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)
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// This has optional query params: /image/{filename}?format=jpg&thumbnail=256
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.service(web::resource("/pictrs/image/{filename}").route(web::get().to(full_res)))
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.service(web::resource("/pictrs/image/delete/{token}/{filename}").route(web::get().to(delete)));
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}
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#[derive(Debug, Serialize, Deserialize)]
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struct Image {
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file: String,
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delete_token: String,
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}
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#[derive(Debug, Serialize, Deserialize)]
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struct Images {
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msg: String,
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files: Option<Vec<Image>>,
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}
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#[derive(Deserialize)]
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struct PictrsParams {
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format: Option<String>,
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thumbnail: Option<String>,
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}
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async fn upload(
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req: HttpRequest,
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body: web::Payload,
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client: web::Data<Client>,
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) -> Result<HttpResponse, Error> {
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// TODO: check rate limit here
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let jwt = req
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.cookie("jwt")
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.expect("No auth header for picture upload");
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if Claims::decode(jwt.value()).is_err() {
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return Ok(HttpResponse::Unauthorized().finish());
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};
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let mut client_req =
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client.request_from(format!("{}/image", Settings::get().pictrs_url), req.head());
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if let Some(addr) = req.head().peer_addr {
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client_req = client_req.header("X-Forwarded-For", addr.to_string())
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};
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let mut res = client_req.send_stream(body).await?;
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let images = res.json::<Images>().await?;
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Ok(HttpResponse::build(res.status()).json(images))
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}
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async fn full_res(
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filename: web::Path<String>,
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web::Query(params): web::Query<PictrsParams>,
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req: HttpRequest,
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client: web::Data<Client>,
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) -> Result<HttpResponse, Error> {
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let name = &filename.into_inner();
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// If there are no query params, the URL is original
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let url = if params.format.is_none() && params.thumbnail.is_none() {
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format!("{}/image/original/{}", Settings::get().pictrs_url, name,)
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} else {
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// Use jpg as a default when none is given
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let format = params.format.unwrap_or_else(|| "jpg".to_string());
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let mut url = format!(
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"{}/image/process.{}?src={}",
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Settings::get().pictrs_url,
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format,
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name,
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);
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if let Some(size) = params.thumbnail {
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url = format!("{}&thumbnail={}", url, size,);
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}
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url
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};
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image(url, req, client).await
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}
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async fn image(
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url: String,
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req: HttpRequest,
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client: web::Data<Client>,
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) -> Result<HttpResponse, Error> {
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let mut client_req = client.request_from(url, req.head());
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if let Some(addr) = req.head().peer_addr {
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client_req = client_req.header("X-Forwarded-For", addr.to_string())
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};
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let res = client_req.no_decompress().send().await?;
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if res.status() == StatusCode::NOT_FOUND {
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return Ok(HttpResponse::NotFound().finish());
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}
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let mut client_res = HttpResponse::build(res.status());
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for (name, value) in res.headers().iter().filter(|(h, _)| *h != "connection") {
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client_res.header(name.clone(), value.clone());
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}
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Ok(client_res.body(BodyStream::new(res)))
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}
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async fn delete(
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components: web::Path<(String, String)>,
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req: HttpRequest,
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client: web::Data<Client>,
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) -> Result<HttpResponse, Error> {
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let (token, file) = components.into_inner();
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let url = format!(
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"{}/image/delete/{}/{}",
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Settings::get().pictrs_url,
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&token,
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&file
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);
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let mut client_req = client.request_from(url, req.head());
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if let Some(addr) = req.head().peer_addr {
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client_req = client_req.header("X-Forwarded-For", addr.to_string())
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};
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let res = client_req.no_decompress().send().await?;
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Ok(HttpResponse::build(res.status()).body(BodyStream::new(res)))
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}
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