lemmy/server/src/apub/mod.rs

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Rust
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pub mod activities;
pub mod community;
pub mod fetcher;
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pub mod inbox;
pub mod post;
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pub mod signatures;
pub mod user;
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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 openssl::{pkey::PKey, rsa::Rsa};
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,
}
pub struct Instance {
domain: String,
}
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fn create_apub_response<T>(json: &T) -> HttpResponse<Body>
where
T: serde::ser::Serialize,
{
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HttpResponse::Ok()
.content_type(APUB_JSON_CONTENT_TYPE)
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.json(json)
}
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// 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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}
pub fn gen_keypair() -> (Vec<u8>, Vec<u8>) {
let rsa = Rsa::generate(2048).expect("sign::gen_keypair: key generation error");
let pkey = PKey::from_rsa(rsa).expect("sign::gen_keypair: parsing error");
(
pkey
.public_key_to_pem()
.expect("sign::gen_keypair: public key encoding error"),
pkey
.private_key_to_pem_pkcs8()
.expect("sign::gen_keypair: private key encoding error"),
)
}
pub fn gen_keypair_str() -> (String, String) {
let (public_key, private_key) = gen_keypair();
(vec_bytes_to_str(public_key), vec_bytes_to_str(private_key))
}
fn vec_bytes_to_str(bytes: Vec<u8>) -> String {
String::from_utf8_lossy(&bytes).into_owned()
}
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pub fn get_following_instances() -> Vec<Instance> {
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Settings::get()
.federation
.followed_instances
.split(',')
.map(|i| Instance {
domain: i.to_string(),
})
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.collect()
}