77 lines
2.1 KiB
Rust
77 lines
2.1 KiB
Rust
use crate::{error::MyError, requests::Requests};
|
|
use http_signature_normalization_actix::{prelude::*, verify::DeprecatedAlgorithm};
|
|
use log::{debug, error, warn};
|
|
use rsa::{hash::Hashes, padding::PaddingScheme, PublicKey, RSAPublicKey};
|
|
use rsa_pem::KeyExt;
|
|
use sha2::{Digest, Sha256};
|
|
use std::{future::Future, pin::Pin};
|
|
|
|
#[derive(Clone)]
|
|
pub struct MyVerify(pub Requests);
|
|
|
|
impl SignatureVerify for MyVerify {
|
|
type Error = MyError;
|
|
type Future = Pin<Box<dyn Future<Output = Result<bool, Self::Error>>>>;
|
|
|
|
fn signature_verify(
|
|
&mut self,
|
|
algorithm: Option<Algorithm>,
|
|
key_id: &str,
|
|
signature: &str,
|
|
signing_string: &str,
|
|
) -> Self::Future {
|
|
let key_id = key_id.to_owned();
|
|
let signature = signature.to_owned();
|
|
let signing_string = signing_string.to_owned();
|
|
|
|
let client = self.0.clone();
|
|
|
|
Box::pin(async move {
|
|
verify(client, algorithm, key_id, signature, signing_string)
|
|
.await
|
|
.map_err(|e| {
|
|
error!("Failed to verify, {}", e);
|
|
e
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
async fn verify(
|
|
client: Requests,
|
|
algorithm: Option<Algorithm>,
|
|
key_id: String,
|
|
signature: String,
|
|
signing_string: String,
|
|
) -> Result<bool, MyError> {
|
|
debug!("Fetching actor");
|
|
let actor = client.fetch_actor(&key_id.parse()?).await?;
|
|
|
|
debug!("Parsing public key");
|
|
let public_key = RSAPublicKey::from_pem_pkcs8(&actor.public_key.public_key_pem)?;
|
|
|
|
match algorithm {
|
|
Some(Algorithm::Hs2019) => (),
|
|
Some(Algorithm::Deprecated(DeprecatedAlgorithm::RsaSha256)) => (),
|
|
other => {
|
|
warn!("Invalid algorithm supplied for signature, {:?}", other);
|
|
return Err(MyError::Algorithm);
|
|
}
|
|
};
|
|
|
|
debug!("Decoding base64");
|
|
let decoded = base64::decode(signature)?;
|
|
debug!("hashing");
|
|
let hashed = Sha256::digest(signing_string.as_bytes());
|
|
|
|
debug!("Verifying signature for {}", key_id);
|
|
public_key.verify(
|
|
PaddingScheme::PKCS1v15,
|
|
Some(&Hashes::SHA2_256),
|
|
&hashed,
|
|
&decoded,
|
|
)?;
|
|
|
|
Ok(true)
|
|
}
|