1 use crate::APUB_JSON_CONTENT_TYPE;
2 use actix_web::HttpRequest;
4 use http::{header::HeaderName, HeaderMap, HeaderValue};
5 use http_signature_normalization_actix::Config as ConfigActix;
6 use http_signature_normalization_reqwest::prelude::{Config, SignExt};
7 use lemmy_utils::LemmyError;
12 sign::{Signer, Verifier},
14 use reqwest::{Client, Response};
15 use serde::{Deserialize, Serialize};
16 use sha2::{Digest, Sha256};
17 use std::str::FromStr;
21 static ref CONFIG2: ConfigActix = ConfigActix::new();
22 static ref HTTP_SIG_CONFIG: Config = Config::new();
25 /// Creates an HTTP post request to `inbox_url`, with the given `client` and `headers`, and
26 /// `activity` as request body. The request is signed with `private_key` and then sent.
27 pub async fn sign_and_send(
33 ) -> Result<Response, LemmyError> {
34 let signing_key_id = format!("{}#main-key", actor_id);
36 let mut headers = HeaderMap::new();
37 let mut host = inbox_url.domain().expect("read inbox domain").to_string();
38 if let Some(port) = inbox_url.port() {
39 host = format!("{}:{}", host, port);
42 HeaderName::from_str("Content-Type")?,
43 HeaderValue::from_str(APUB_JSON_CONTENT_TYPE)?,
45 headers.insert(HeaderName::from_str("Host")?, HeaderValue::from_str(&host)?);
48 .post(&inbox_url.to_string())
50 .signature_with_digest(
51 HTTP_SIG_CONFIG.clone(),
55 move |signing_string| {
56 let private_key = PKey::private_key_from_pem(private_key.as_bytes())?;
57 let mut signer = Signer::new(MessageDigest::sha256(), &private_key)?;
58 signer.update(signing_string.as_bytes())?;
60 Ok(base64::encode(signer.sign_to_vec()?)) as Result<_, LemmyError>
68 /// Verifies the HTTP signature on an incoming inbox request.
69 pub fn verify_signature(request: &HttpRequest, public_key: &str) -> Result<(), LemmyError> {
70 let verified = CONFIG2
73 request.uri().path_and_query(),
74 request.headers().clone(),
76 .verify(|signature, signing_string| -> Result<bool, LemmyError> {
78 "Verifying with key {}, message {}",
79 &public_key, &signing_string
81 let public_key = PKey::public_key_from_pem(public_key.as_bytes())?;
82 let mut verifier = Verifier::new(MessageDigest::sha256(), &public_key)?;
83 verifier.update(signing_string.as_bytes())?;
84 Ok(verifier.verify(&base64::decode(signature)?)?)
88 debug!("verified signature for {}", &request.uri());
91 Err(anyhow!("Invalid signature on request: {}", &request.uri()).into())
95 #[derive(Clone, Debug, Deserialize, Serialize)]
96 #[serde(rename_all = "camelCase")]
97 pub struct PublicKey {
98 pub(crate) id: String,
99 pub(crate) owner: Box<Url>,
100 pub public_key_pem: String,