fix(media): use csp instead of modifying content-type
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7b19618136
commit
1dbb3433e0
2 changed files with 24 additions and 24 deletions
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@ -22,14 +22,6 @@ pub async fn get_media_config_route(
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})
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}
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fn sanitize_content_type(content_type: String) -> String {
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if content_type == "image/jpeg" || content_type == "image/png" {
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content_type
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} else {
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"application/octet-stream".to_owned()
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}
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}
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/// # `POST /_matrix/media/r0/upload`
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///
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/// Permanently save media in the server.
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@ -108,13 +100,13 @@ pub async fn get_content_route(
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if let Some(FileMeta {
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content_disposition,
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content_type,
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file,
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..
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}) = services().media.get(mxc.clone()).await?
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{
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Ok(get_content::v3::Response {
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file,
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content_type: Some("application/octet-stream".to_owned()),
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content_type,
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content_disposition,
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cross_origin_resource_policy: Some("cross-origin".to_owned()),
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})
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@ -124,7 +116,7 @@ pub async fn get_content_route(
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Ok(get_content::v3::Response {
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content_disposition: remote_content_response.content_disposition,
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content_type: Some("application/octet-stream".to_owned()),
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content_type: remote_content_response.content_type,
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file: remote_content_response.file,
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cross_origin_resource_policy: Some("cross-origin".to_owned()),
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})
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@ -143,10 +135,13 @@ pub async fn get_content_as_filename_route(
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) -> Result<get_content_as_filename::v3::Response> {
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let mxc = format!("mxc://{}/{}", body.server_name, body.media_id);
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if let Some(FileMeta { file, .. }) = services().media.get(mxc.clone()).await? {
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if let Some(FileMeta {
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file, content_type, ..
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}) = services().media.get(mxc.clone()).await?
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{
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Ok(get_content_as_filename::v3::Response {
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file,
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content_type: Some("application/octet-stream".to_owned()),
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content_type,
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content_disposition: Some(format!("inline; filename={}", body.filename)),
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cross_origin_resource_policy: Some("cross-origin".to_owned()),
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})
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@ -156,7 +151,7 @@ pub async fn get_content_as_filename_route(
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Ok(get_content_as_filename::v3::Response {
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content_disposition: Some(format!("inline: filename={}", body.filename)),
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content_type: Some("application/octet-stream".to_owned()),
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content_type: remote_content_response.content_type,
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file: remote_content_response.file,
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cross_origin_resource_policy: Some("cross-origin".to_owned()),
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})
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@ -192,11 +187,11 @@ pub async fn get_content_thumbnail_route(
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{
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Ok(get_content_thumbnail::v3::Response {
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file,
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content_type: content_type.map(sanitize_content_type),
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content_type,
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cross_origin_resource_policy: Some("cross-origin".to_owned()),
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})
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} else if &*body.server_name != services().globals.server_name() && body.allow_remote {
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let mut get_thumbnail_response = services()
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let get_thumbnail_response = services()
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.sending
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.send_federation_request(
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&body.server_name,
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@ -225,10 +220,6 @@ pub async fn get_content_thumbnail_route(
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)
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.await?;
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get_thumbnail_response.content_type = get_thumbnail_response
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.content_type
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.map(sanitize_content_type);
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Ok(get_thumbnail_response)
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} else {
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Err(Error::BadRequest(ErrorKind::NotFound, "Media not found."))
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17
src/main.rs
17
src/main.rs
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@ -2,7 +2,8 @@ use std::{future::Future, io, net::SocketAddr, sync::atomic, time::Duration};
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use axum::{
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extract::{DefaultBodyLimit, FromRequestParts, MatchedPath},
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response::IntoResponse,
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middleware::map_response,
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response::{IntoResponse, Response},
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routing::{any, get, on, MethodFilter},
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Router,
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};
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@ -13,7 +14,7 @@ use figment::{
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Figment,
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};
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use http::{
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header::{self, HeaderName},
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header::{self, HeaderName, CONTENT_SECURITY_POLICY},
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Method, StatusCode, Uri,
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};
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use ruma::api::{
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@ -141,6 +142,13 @@ async fn main() {
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}
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}
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/// Adds additional headers to prevent any potential XSS attacks via the media repo
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async fn set_csp_header(response: Response) -> impl IntoResponse {
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(
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[(CONTENT_SECURITY_POLICY, "sandbox; default-src 'none'; script-src 'none'; plugin-types application/pdf; style-src 'unsafe-inline'; object-src 'self';")], response
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)
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}
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async fn run_server() -> io::Result<()> {
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let config = &services().globals.config;
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let addr = SocketAddr::from((config.address, config.port));
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@ -181,6 +189,7 @@ async fn run_server() -> io::Result<()> {
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])
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.max_age(Duration::from_secs(86400)),
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)
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.layer(map_response(set_csp_header))
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.layer(DefaultBodyLimit::max(
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config
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.max_request_size
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@ -219,7 +228,7 @@ async fn run_server() -> io::Result<()> {
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async fn spawn_task<B: Send + 'static>(
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req: http::Request<B>,
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next: axum::middleware::Next<B>,
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) -> std::result::Result<axum::response::Response, StatusCode> {
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) -> std::result::Result<Response, StatusCode> {
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if services().globals.shutdown.load(atomic::Ordering::Relaxed) {
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return Err(StatusCode::SERVICE_UNAVAILABLE);
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}
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@ -231,7 +240,7 @@ async fn spawn_task<B: Send + 'static>(
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async fn unrecognized_method<B: Send>(
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req: http::Request<B>,
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next: axum::middleware::Next<B>,
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) -> std::result::Result<axum::response::Response, StatusCode> {
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) -> std::result::Result<Response, StatusCode> {
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let method = req.method().clone();
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let uri = req.uri().clone();
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let inner = next.run(req).await;
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