feat: return IPFS header for CDN

src/cdn/error.rs

@@ -4,6 +4,7 @@ use axum::{
     body::{Bytes, Empty},
     response::IntoResponse,
 };
+use hyper::header::InvalidHeaderValue;
 use reqwest::StatusCode;
 use thiserror::Error;
 
@@ -17,6 +18,8 @@ pub enum CDNError {
     Service(#[from] ServiceError),
     #[error("Decode error: {0}")]
     Decode(#[from] FromUtf8Error),
+    #[error("Header error: {0}")]
+    Header(#[from] InvalidHeaderValue),
     #[error("Internal server error")]
     Internal,
 }

src/cdn/mod.rs

@@ -7,7 +7,7 @@ use axum::{
     routing::BoxRoute,
     Router,
 };
-use headers::{ContentType, HeaderMapExt};
+use headers::{ContentType, HeaderMapExt, HeaderValue};
 use reqwest::{
     header::{HeaderName, CONTENT_LENGTH},
     StatusCode,
@@ -38,6 +38,7 @@ async fn image(
 ) -> Result<impl IntoResponse, CDNError> {
     let filename = urlencoding::decode(&filename)?.into_owned();
     let cid = sql::get_cid(user, filename.clone(), &service.db_pool).await?;
+    let ipfs_path = format!("/ipfs/{}", cid);
     let res = service.ipfs_cat(cid).await?;
     let clength = res
         .headers()
@@ -48,6 +49,7 @@ async fn image(
     let ctype = ContentType::from(new_mime_guess::from_path(filename).first_or_octet_stream());
     headers.typed_insert(ctype);
     headers.insert(CONTENT_LENGTH, clength.clone());
+    headers.insert("X-Ipfs-Path", HeaderValue::from_str(ipfs_path.as_str())?);
 
     Ok((
         StatusCode::OK,

src/cdn/sql.rs

@@ -12,7 +12,8 @@ pub async fn get_cid(user: String, filename: String, pool: &PgPool) -> Result<St
 }
 
 pub async fn get_memes(user: String, pool: &PgPool) -> Result<Vec<String>> {
-    let q: Vec<String> = sqlx::query("SELECT filename FROM memes WHERE userid = $1 ORDER BY filename")
+    let q: Vec<String> =
+        sqlx::query("SELECT filename FROM memes WHERE userid = $1 ORDER BY filename")
             .bind(user)
             .map(|row: PgRow| row.get("filename"))
             .fetch_all(pool)