mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-10-31 09:40:00 +00:00
103 lines
3.2 KiB
Rust
103 lines
3.2 KiB
Rust
use crate::APUB_JSON_CONTENT_TYPE;
|
|
use actix_web::HttpRequest;
|
|
use anyhow::anyhow;
|
|
use http::{header::HeaderName, HeaderMap, HeaderValue};
|
|
use http_signature_normalization_actix::Config as ConfigActix;
|
|
use http_signature_normalization_reqwest::prelude::{Config, SignExt};
|
|
use lemmy_utils::LemmyError;
|
|
use once_cell::sync::Lazy;
|
|
use openssl::{
|
|
hash::MessageDigest,
|
|
pkey::PKey,
|
|
sign::{Signer, Verifier},
|
|
};
|
|
use reqwest::Response;
|
|
use reqwest_middleware::ClientWithMiddleware;
|
|
use serde::{Deserialize, Serialize};
|
|
use sha2::{Digest, Sha256};
|
|
use std::str::FromStr;
|
|
use tracing::debug;
|
|
use url::Url;
|
|
|
|
static CONFIG2: Lazy<ConfigActix> = Lazy::new(ConfigActix::new);
|
|
static HTTP_SIG_CONFIG: Lazy<Config> = Lazy::new(Config::new);
|
|
|
|
/// Creates an HTTP post request to `inbox_url`, with the given `client` and `headers`, and
|
|
/// `activity` as request body. The request is signed with `private_key` and then sent.
|
|
pub async fn sign_and_send(
|
|
client: &ClientWithMiddleware,
|
|
inbox_url: &Url,
|
|
activity: String,
|
|
actor_id: &Url,
|
|
private_key: String,
|
|
) -> Result<Response, LemmyError> {
|
|
let signing_key_id = format!("{}#main-key", actor_id);
|
|
|
|
let mut headers = HeaderMap::new();
|
|
let mut host = inbox_url.domain().expect("read inbox domain").to_string();
|
|
if let Some(port) = inbox_url.port() {
|
|
host = format!("{}:{}", host, port);
|
|
}
|
|
headers.insert(
|
|
HeaderName::from_str("Content-Type")?,
|
|
HeaderValue::from_str(APUB_JSON_CONTENT_TYPE)?,
|
|
);
|
|
headers.insert(HeaderName::from_str("Host")?, HeaderValue::from_str(&host)?);
|
|
|
|
let request = client
|
|
.post(&inbox_url.to_string())
|
|
.headers(headers)
|
|
.signature_with_digest(
|
|
HTTP_SIG_CONFIG.clone(),
|
|
signing_key_id,
|
|
Sha256::new(),
|
|
activity,
|
|
move |signing_string| {
|
|
let private_key = PKey::private_key_from_pem(private_key.as_bytes())?;
|
|
let mut signer = Signer::new(MessageDigest::sha256(), &private_key)?;
|
|
signer.update(signing_string.as_bytes())?;
|
|
|
|
Ok(base64::encode(signer.sign_to_vec()?)) as Result<_, LemmyError>
|
|
},
|
|
)
|
|
.await?;
|
|
|
|
let response = client.execute(request).await?;
|
|
|
|
Ok(response)
|
|
}
|
|
|
|
/// Verifies the HTTP signature on an incoming inbox request.
|
|
pub fn verify_signature(request: &HttpRequest, public_key: &str) -> Result<(), LemmyError> {
|
|
let verified = CONFIG2
|
|
.begin_verify(
|
|
request.method(),
|
|
request.uri().path_and_query(),
|
|
request.headers().clone(),
|
|
)?
|
|
.verify(|signature, signing_string| -> Result<bool, LemmyError> {
|
|
debug!(
|
|
"Verifying with key {}, message {}",
|
|
&public_key, &signing_string
|
|
);
|
|
let public_key = PKey::public_key_from_pem(public_key.as_bytes())?;
|
|
let mut verifier = Verifier::new(MessageDigest::sha256(), &public_key)?;
|
|
verifier.update(signing_string.as_bytes())?;
|
|
Ok(verifier.verify(&base64::decode(signature)?)?)
|
|
})?;
|
|
|
|
if verified {
|
|
debug!("verified signature for {}", &request.uri());
|
|
Ok(())
|
|
} else {
|
|
Err(anyhow!("Invalid signature on request: {}", &request.uri()).into())
|
|
}
|
|
}
|
|
|
|
#[derive(Clone, Debug, Deserialize, Serialize)]
|
|
#[serde(rename_all = "camelCase")]
|
|
pub struct PublicKey {
|
|
pub(crate) id: String,
|
|
pub(crate) owner: Box<Url>,
|
|
pub public_key_pem: String,
|
|
}
|