fedi/lemmy
1
0
Fork 0
mirror of https://github.com/LemmyNet/lemmy.git synced 2024-12-22 17:27:15 +00:00
Code Issues Packages Projects Releases Wiki Activity

Remove invalid XML characters from RSS feeds (#4416)

Browse source 
* Remove all characters that are disallowed by XML

* Combine contiguous unicode ranges into one range
This commit is contained in:
Elara 2024-01-30 06:55:45 -08:00 committed by GitHub
parent a09027c4c0
commit 328d48ef7e
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 23 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
crates/routes/src/feeds.rs
View file

@ -92,6 +92,23 @@ static RSS_NAMESPACE: Lazy<BTreeMap<String, String>> = Lazy::new(|| {
h
});
/// Removes any characters disallowed by the XML grammar.
/// See https://www.w3.org/TR/xml/#NT-Char for details.
fn sanitize_xml(input: String) -> String {
input
.chars()
.filter(|&c| {
matches!(c,
'\u{09}'
| '\u{0A}'
| '\u{0D}'
| '\u{20}'..='\u{D7FF}'
| '\u{E000}'..='\u{FFFD}'
| '\u{10000}'..='\u{10FFFF}')
})
.collect()
}
#[tracing::instrument(skip_all)]
async fn get_all_feed(
info: web::Query<Params>,
@ -256,10 +273,9 @@ async fn get_feed_user(
.await?;
let items = create_post_items(posts, &context.settings().get_protocol_and_hostname())?;
let channel = Channel {
namespaces: RSS_NAMESPACE.clone(),
title: format!("{} - {}", site_view.site.name, person.name),
title: format!("{} - {}", sanitize_xml(site_view.site.name), person.name),
link: person.actor_id.to_string(),
items,
..Default::default()
@ -298,7 +314,7 @@ async fn get_feed_community(
let mut channel = Channel {
namespaces: RSS_NAMESPACE.clone(),
title: format!("{} - {}", site_view.site.name, community.name),
title: format!("{} - {}", sanitize_xml(site_view.site.name), community.name),
link: community.actor_id.to_string(),
items,
..Default::default()
@ -337,10 +353,9 @@ async fn get_feed_front(
let protocol_and_hostname = context.settings().get_protocol_and_hostname();
let items = create_post_items(posts, &protocol_and_hostname)?;
let mut channel = Channel {
namespaces: RSS_NAMESPACE.clone(),
title: format!("{} - Subscribed", site_view.site.name),
title: format!("{} - Subscribed", sanitize_xml(site_view.site.name)),
link: protocol_and_hostname,
items,
..Default::default()
@ -391,7 +406,7 @@ async fn get_feed_inbox(context: &LemmyContext, jwt: &str) -> Result<Channel, Le
let mut channel = Channel {
namespaces: RSS_NAMESPACE.clone(),
title: format!("{} - Inbox", site_view.site.name),
title: format!("{} - Inbox", sanitize_xml(site_view.site.name)),
link: format!("{protocol_and_hostname}/inbox"),
items,
..Default::default()
@ -537,11 +552,11 @@ fn create_post_items(
}
let i = Item {
title: Some(sanitize_html(&p.post.name)),
title: Some(sanitize_html(sanitize_xml(p.post.name).as_str())),
pub_date: Some(p.post.published.to_rfc2822()),
comments: Some(post_url.clone()),
guid,
description: Some(description),
description: Some(sanitize_xml(description)),
dublin_core_ext,
link,
extensions,