lemmy/lemmy_utils/src/apub.rs

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Rust
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use crate::settings::Settings;
use openssl::{pkey::PKey, rsa::Rsa};
use std::io::{Error, ErrorKind};
use url::Url;
pub struct Keypair {
pub private_key: String,
pub public_key: String,
}
/// Generate the asymmetric keypair for ActivityPub HTTP signatures.
pub fn generate_actor_keypair() -> Result<Keypair, Error> {
let rsa = Rsa::generate(2048)?;
let pkey = PKey::from_rsa(rsa)?;
let public_key = pkey.public_key_to_pem()?;
let private_key = pkey.private_key_to_pem_pkcs8()?;
let key_to_string = |key| match String::from_utf8(key) {
Ok(s) => Ok(s),
Err(e) => Err(Error::new(
ErrorKind::Other,
format!("Failed converting key to string: {}", e),
)),
};
Ok(Keypair {
private_key: key_to_string(private_key)?,
public_key: key_to_string(public_key)?,
})
}
pub enum EndpointType {
Community,
User,
Post,
Comment,
PrivateMessage,
}
/// Generates the ActivityPub ID for a given object type and ID.
pub fn make_apub_endpoint(endpoint_type: EndpointType, name: &str) -> Url {
let point = match endpoint_type {
EndpointType::Community => "c",
EndpointType::User => "u",
EndpointType::Post => "post",
EndpointType::Comment => "comment",
EndpointType::PrivateMessage => "private_message",
};
Url::parse(&format!(
"{}/{}/{}",
Settings::get().get_protocol_and_hostname(),
point,
name
))
.unwrap()
}