lemmy/server/src/apub/mod.rs

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Rust
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pub mod activities;
pub mod community;
pub mod community_inbox;
pub mod fetcher;
pub mod post;
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pub mod signatures;
pub mod user;
pub mod user_inbox;
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use crate::apub::signatures::PublicKeyExtension;
use crate::Settings;
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use activitystreams::actor::{properties::ApActorProperties, Group, Person};
use activitystreams::ext::Ext;
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use actix_web::body::Body;
use actix_web::HttpResponse;
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use serde::ser::Serialize;
use url::Url;
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type GroupExt = Ext<Ext<Group, ApActorProperties>, PublicKeyExtension>;
type PersonExt = Ext<Ext<Person, ApActorProperties>, PublicKeyExtension>;
static APUB_JSON_CONTENT_TYPE: &str = "application/activity+json";
pub enum EndpointType {
Community,
User,
Post,
Comment,
}
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/// Convert the data to json and turn it into an HTTP Response with the correct ActivityPub
/// headers.
fn create_apub_response<T>(data: &T) -> HttpResponse<Body>
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where
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T: Serialize,
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{
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HttpResponse::Ok()
.content_type(APUB_JSON_CONTENT_TYPE)
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.json(data)
}
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/// Generates the ActivityPub ID for a given object type and name.
///
/// TODO: we will probably need to change apub endpoint urls so that html and activity+json content
/// types are handled at the same endpoint, so that you can copy the url into mastodon search
/// and have it fetch the object.
pub fn make_apub_endpoint(endpoint_type: EndpointType, name: &str) -> Url {
let point = match endpoint_type {
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EndpointType::Community => "c",
EndpointType::User => "u",
EndpointType::Post => "p",
// TODO I have to change this else my update advanced_migrations crashes the
// server if a comment exists.
EndpointType::Comment => "comment",
};
Url::parse(&format!(
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"{}://{}/federation/{}/{}",
get_apub_protocol_string(),
Settings::get().hostname,
point,
name
))
.unwrap()
}
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pub fn get_apub_protocol_string() -> &'static str {
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if Settings::get().federation.tls_enabled {
"https"
} else {
"http"
}
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}
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// Checks if the ID has a valid format, correct scheme, and is in the whitelist.
fn is_apub_id_valid(apub_id: &Url) -> bool {
if apub_id.scheme() != get_apub_protocol_string() {
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return false;
}
let whitelist: Vec<String> = Settings::get()
.federation
.instance_whitelist
.split(',')
.map(|d| d.to_string())
.collect();
match apub_id.domain() {
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Some(d) => whitelist.contains(&d.to_owned()),
None => false,
}
}