| 1 |
use std::{collections::HashMap, ops::Deref};
|
| 2 |
|
| 3 |
use anyhow::Error;
|
| 4 |
use futures_util::Future;
|
| 5 |
use giterated_models::model::{
|
| 6 |
authenticated::{Authenticated, AuthenticationSource, UserTokenMetadata, AuthenticatedPayload},
|
| 7 |
instance::Instance,
|
| 8 |
user::User,
|
| 9 |
};
|
| 10 |
use jsonwebtoken::{decode, Algorithm, DecodingKey, TokenData, Validation};
|
| 11 |
use rsa::{
|
| 12 |
pkcs1::{DecodeRsaPrivateKey, DecodeRsaPublicKey},
|
| 13 |
pss::{Signature, VerifyingKey},
|
| 14 |
sha2::Sha256,
|
| 15 |
signature::Verifier,
|
| 16 |
RsaPublicKey,
|
| 17 |
};
|
| 18 |
use serde::{de::DeserializeOwned, Serialize};
|
| 19 |
use serde_json::Value;
|
| 20 |
|
| 21 |
use crate::connection::wrapper::ConnectionState;
|
| 22 |
|
| 23 |
pub struct NetworkMessage(pub Vec<u8>);
|
| 24 |
|
| 25 |
impl Deref for NetworkMessage {
|
| 26 |
type Target = [u8];
|
| 27 |
|
| 28 |
fn deref(&self) -> &Self::Target {
|
| 29 |
&self.0
|
| 30 |
}
|
| 31 |
}
|
| 32 |
|
| 33 |
pub struct AuthenticatedUser(pub User);
|
| 34 |
|
| 35 |
#[derive(Debug, thiserror::Error)]
|
| 36 |
pub enum UserAuthenticationError {
|
| 37 |
#[error("user authentication missing")]
|
| 38 |
Missing,
|
| 39 |
|
| 40 |
|
| 41 |
#[error("user token was invalid")]
|
| 42 |
InvalidToken,
|
| 43 |
#[error("an error has occured")]
|
| 44 |
Other(#[from] Error),
|
| 45 |
}
|
| 46 |
|
| 47 |
pub struct AuthenticatedInstance(Instance);
|
| 48 |
|
| 49 |
impl AuthenticatedInstance {
|
| 50 |
pub fn inner(&self) -> &Instance {
|
| 51 |
&self.0
|
| 52 |
}
|
| 53 |
}
|
| 54 |
|
| 55 |
#[async_trait::async_trait]
|
| 56 |
pub trait FromMessage<S: Send + Sync>: Sized + Send + Sync {
|
| 57 |
async fn from_message(message: &NetworkMessage, state: &S) -> Result<Self, Error>;
|
| 58 |
}
|
| 59 |
|
| 60 |
#[async_trait::async_trait]
|
| 61 |
impl FromMessage<ConnectionState> for AuthenticatedUser {
|
| 62 |
async fn from_message(
|
| 63 |
network_message: &NetworkMessage,
|
| 64 |
state: &ConnectionState,
|
| 65 |
) -> Result<Self, Error> {
|
| 66 |
let message: AuthenticatedPayload =
|
| 67 |
serde_json::from_slice(&network_message).map_err(|e| Error::from(e))?;
|
| 68 |
|
| 69 |
let (auth_user, auth_token) = message
|
| 70 |
.source
|
| 71 |
.iter()
|
| 72 |
.filter_map(|auth| {
|
| 73 |
if let AuthenticationSource::User { user, token } = auth {
|
| 74 |
Some((user, token))
|
| 75 |
} else {
|
| 76 |
None
|
| 77 |
}
|
| 78 |
})
|
| 79 |
.next()
|
| 80 |
.ok_or_else(|| UserAuthenticationError::Missing)?;
|
| 81 |
|
| 82 |
let authenticated_instance =
|
| 83 |
AuthenticatedInstance::from_message(network_message, state).await?;
|
| 84 |
|
| 85 |
let public_key_raw = public_key(&auth_user.instance).await?;
|
| 86 |
let verification_key = DecodingKey::from_rsa_pem(public_key_raw.as_bytes()).unwrap();
|
| 87 |
|
| 88 |
let data: TokenData<UserTokenMetadata> = decode(
|
| 89 |
auth_token.as_ref(),
|
| 90 |
&verification_key,
|
| 91 |
&Validation::new(Algorithm::RS256),
|
| 92 |
)
|
| 93 |
.unwrap();
|
| 94 |
|
| 95 |
if data.claims.user != *auth_user
|
| 96 |
|| data.claims.generated_for != *authenticated_instance.inner()
|
| 97 |
{
|
| 98 |
Err(Error::from(UserAuthenticationError::InvalidToken))
|
| 99 |
} else {
|
| 100 |
Ok(AuthenticatedUser(data.claims.user))
|
| 101 |
}
|
| 102 |
}
|
| 103 |
}
|
| 104 |
|
| 105 |
#[async_trait::async_trait]
|
| 106 |
impl FromMessage<ConnectionState> for AuthenticatedInstance {
|
| 107 |
async fn from_message(
|
| 108 |
network_message: &NetworkMessage,
|
| 109 |
state: &ConnectionState,
|
| 110 |
) -> Result<Self, Error> {
|
| 111 |
let message: AuthenticatedPayload =
|
| 112 |
serde_json::from_slice(&network_message).map_err(|e| Error::from(e))?;
|
| 113 |
|
| 114 |
let (instance, signature) = message
|
| 115 |
.source
|
| 116 |
.iter()
|
| 117 |
.filter_map(|auth: &AuthenticationSource| {
|
| 118 |
if let AuthenticationSource::Instance {
|
| 119 |
instance,
|
| 120 |
signature,
|
| 121 |
} = auth
|
| 122 |
{
|
| 123 |
Some((instance, signature))
|
| 124 |
} else {
|
| 125 |
None
|
| 126 |
}
|
| 127 |
})
|
| 128 |
.next()
|
| 129 |
|
| 130 |
.ok_or_else(|| UserAuthenticationError::Missing)?;
|
| 131 |
|
| 132 |
let public_key = {
|
| 133 |
let cached_keys = state.cached_keys.read().await;
|
| 134 |
|
| 135 |
if let Some(key) = cached_keys.get(&instance) {
|
| 136 |
key.clone()
|
| 137 |
} else {
|
| 138 |
drop(cached_keys);
|
| 139 |
let mut cached_keys = state.cached_keys.write().await;
|
| 140 |
let key = public_key(&instance).await?;
|
| 141 |
let public_key = RsaPublicKey::from_pkcs1_pem(&key).unwrap();
|
| 142 |
cached_keys.insert(instance.clone(), public_key.clone());
|
| 143 |
public_key
|
| 144 |
}
|
| 145 |
};
|
| 146 |
|
| 147 |
let verifying_key: VerifyingKey<Sha256> = VerifyingKey::new(public_key);
|
| 148 |
|
| 149 |
verifying_key.verify(
|
| 150 |
&message.payload,
|
| 151 |
&Signature::try_from(signature.as_ref()).unwrap(),
|
| 152 |
)?;
|
| 153 |
|
| 154 |
Ok(AuthenticatedInstance(instance.clone()))
|
| 155 |
}
|
| 156 |
}
|
| 157 |
|
| 158 |
#[async_trait::async_trait]
|
| 159 |
impl<S, T> FromMessage<S> for Option<T>
|
| 160 |
where
|
| 161 |
T: FromMessage<S>,
|
| 162 |
S: Send + Sync + 'static,
|
| 163 |
{
|
| 164 |
async fn from_message(message: &NetworkMessage, state: &S) -> Result<Self, Error> {
|
| 165 |
Ok(T::from_message(message, state).await.ok())
|
| 166 |
}
|
| 167 |
}
|
| 168 |
|
| 169 |
#[async_trait::async_trait]
|
| 170 |
pub trait MessageHandler<T, S, R> {
|
| 171 |
async fn handle_message(self, message: &NetworkMessage, state: &S) -> Result<R, Error>;
|
| 172 |
}
|
| 173 |
#[async_trait::async_trait]
|
| 174 |
impl<F, R, S, T1, T, E> MessageHandler<(T1,), S, R> for T
|
| 175 |
where
|
| 176 |
T: FnOnce(T1) -> F + Clone + Send + 'static,
|
| 177 |
F: Future<Output = Result<R, E>> + Send,
|
| 178 |
T1: FromMessage<S> + Send,
|
| 179 |
S: Send + Sync,
|
| 180 |
E: std::error::Error + Send + Sync + 'static,
|
| 181 |
{
|
| 182 |
async fn handle_message(self, message: &NetworkMessage, state: &S) -> Result<R, Error> {
|
| 183 |
let value = T1::from_message(message, state).await?;
|
| 184 |
self(value).await.map_err(|e| Error::from(e))
|
| 185 |
}
|
| 186 |
}
|
| 187 |
|
| 188 |
#[async_trait::async_trait]
|
| 189 |
impl<F, R, S, T1, T2, T, E> MessageHandler<(T1, T2), S, R> for T
|
| 190 |
where
|
| 191 |
T: FnOnce(T1, T2) -> F + Clone + Send + 'static,
|
| 192 |
F: Future<Output = Result<R, E>> + Send,
|
| 193 |
T1: FromMessage<S> + Send,
|
| 194 |
T2: FromMessage<S> + Send,
|
| 195 |
S: Send + Sync,
|
| 196 |
E: std::error::Error + Send + Sync + 'static,
|
| 197 |
{
|
| 198 |
async fn handle_message(self, message: &NetworkMessage, state: &S) -> Result<R, Error> {
|
| 199 |
let value = T1::from_message(message, state).await?;
|
| 200 |
let value_2 = T2::from_message(message, state).await?;
|
| 201 |
self(value, value_2).await.map_err(|e| Error::from(e))
|
| 202 |
}
|
| 203 |
}
|
| 204 |
|
| 205 |
#[async_trait::async_trait]
|
| 206 |
impl<F, R, S, T1, T2, T3, T, E> MessageHandler<(T1, T2, T3), S, R> for T
|
| 207 |
where
|
| 208 |
T: FnOnce(T1, T2, T3) -> F + Clone + Send + 'static,
|
| 209 |
F: Future<Output = Result<R, E>> + Send,
|
| 210 |
T1: FromMessage<S> + Send,
|
| 211 |
T2: FromMessage<S> + Send,
|
| 212 |
T3: FromMessage<S> + Send,
|
| 213 |
S: Send + Sync,
|
| 214 |
E: std::error::Error + Send + Sync + 'static,
|
| 215 |
{
|
| 216 |
async fn handle_message(self, message: &NetworkMessage, state: &S) -> Result<R, Error> {
|
| 217 |
let value = T1::from_message(message, state).await?;
|
| 218 |
let value_2 = T2::from_message(message, state).await?;
|
| 219 |
let value_3 = T3::from_message(message, state).await?;
|
| 220 |
|
| 221 |
self(value, value_2, value_3)
|
| 222 |
.await
|
| 223 |
.map_err(|e| Error::from(e))
|
| 224 |
}
|
| 225 |
}
|
| 226 |
|
| 227 |
pub struct State<T>(pub T);
|
| 228 |
|
| 229 |
#[async_trait::async_trait]
|
| 230 |
impl<T> FromMessage<T> for State<T>
|
| 231 |
where
|
| 232 |
T: Clone + Send + Sync,
|
| 233 |
{
|
| 234 |
async fn from_message(_: &NetworkMessage, state: &T) -> Result<Self, Error> {
|
| 235 |
Ok(Self(state.clone()))
|
| 236 |
}
|
| 237 |
}
|
| 238 |
|
| 239 |
|
| 240 |
#[async_trait::async_trait]
|
| 241 |
impl<T, S> FromMessage<S> for Message<T>
|
| 242 |
where
|
| 243 |
T: DeserializeOwned + Send + Sync + Serialize,
|
| 244 |
S: Clone + Send + Sync,
|
| 245 |
{
|
| 246 |
async fn from_message(message: &NetworkMessage, _: &S) -> Result<Self, Error> {
|
| 247 |
let payload: AuthenticatedPayload = serde_json::from_slice(&message)?;
|
| 248 |
Ok(Message(bincode::deserialize(&payload.payload)?))
|
| 249 |
}
|
| 250 |
}
|
| 251 |
|
| 252 |
pub struct Message<T: Serialize + DeserializeOwned>(pub T);
|
| 253 |
|
| 254 |
async fn public_key(instance: &Instance) -> Result<String, Error> {
|
| 255 |
let key = reqwest::get(format!("https://{}/.giterated/pubkey.pem", instance.url))
|
| 256 |
.await?
|
| 257 |
.text()
|
| 258 |
.await?;
|
| 259 |
|
| 260 |
Ok(key)
|
| 261 |
}
|
| 262 |
|
| 263 |
|
| 264 |
|
| 265 |
|
| 266 |
|
| 267 |
pub struct HandshakeMessage<T: Serialize + DeserializeOwned>(pub T);
|
| 268 |
|
| 269 |
#[async_trait::async_trait]
|
| 270 |
impl<T, S> FromMessage<S> for HandshakeMessage<T>
|
| 271 |
where
|
| 272 |
T: DeserializeOwned + Send + Sync + Serialize,
|
| 273 |
S: Clone + Send + Sync,
|
| 274 |
{
|
| 275 |
async fn from_message(message: &NetworkMessage, _: &S) -> Result<Self, Error> {
|
| 276 |
Ok(HandshakeMessage(serde_json::from_slice(&message.0)?))
|
| 277 |
}
|
| 278 |
}
|