Implement media download with custom filename

4 years ago · 8472eff277
2 changed files with 64 additions and 1 deletions
--- a/src/client_server/media.rs
+++ b/src/client_server/media.rs
@ -4,7 +4,10 @@ use crate::{
 };
 use ruma::api::client::{
    error::ErrorKind,
-    r0::media::{create_content, get_content, get_content_thumbnail, get_media_config},
+    r0::media::{
+        create_content, get_content, get_content_as_filename, get_content_thumbnail,
+        get_media_config,
+    },
 };
 use std::convert::TryInto;

@ -129,6 +132,65 @@ pub async fn get_content_route(
    }
 }

+/// # `GET /_matrix/media/r0/download/{serverName}/{mediaId}/{fileName}`
+///
+/// Load media from our server or over federation, permitting desired filename.
+///
+/// - Only allows federation if `allow_remote` is true
+#[cfg_attr(
+    feature = "conduit_bin",
+    get("/_matrix/media/r0/download/<_>/<_>/<_>", data = "<body>")
+)]
+#[tracing::instrument(skip(db, body))]
+pub async fn get_content_as_filename_route(
+    db: DatabaseGuard,
+    body: Ruma<get_content_as_filename::Request<'_>>,
+) -> ConduitResult<get_content_as_filename::Response> {
+    let mxc = format!("mxc://{}/{}", body.server_name, body.media_id);
+
+    if let Some(FileMeta {
+        content_disposition: _,
+        content_type,
+        file,
+    }) = db.media.get(&db.globals, &mxc).await?
+    {
+        Ok(get_content_as_filename::Response {
+            file,
+            content_type,
+            content_disposition: Some(format!("inline; filename={}", body.filename)),
+        }
+        .into())
+    } else if &*body.server_name != db.globals.server_name() && body.allow_remote {
+        let get_content_response = db
+            .sending
+            .send_federation_request(
+                &db.globals,
+                &body.server_name,
+                get_content_as_filename::Request {
+                    allow_remote: false,
+                    server_name: &body.server_name,
+                    media_id: &body.media_id,
+                    filename: &body.filename,
+                },
+            )
+            .await?;
+
+        db.media
+            .create(
+                mxc,
+                &db.globals,
+                &get_content_response.content_disposition.as_deref(),
+                &get_content_response.content_type.as_deref(),
+                &get_content_response.file,
+            )
+            .await?;
+
+        Ok(get_content_response.into())
+    } else {
+        Err(Error::BadRequest(ErrorKind::NotFound, "Media not found."))
+    }
+}
+
 /// # `POST /_matrix/media/r0/thumbnail/{serverName}/{mediaId}`
 ///
 /// Load media thumbnail from our server or over federation.
--- a/src/main.rs
+++ b/src/main.rs
@ -136,6 +136,7 @@ fn setup_rocket(config: Figment, data: Arc<RwLock<Database>>) -> rocket::Rocket<
                client_server::send_event_to_device_route,
                client_server::get_media_config_route,
                client_server::create_content_route,
+                client_server::get_content_as_filename_route,
                client_server::get_content_route,
                client_server::get_content_thumbnail_route,
                client_server::get_devices_route,