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use std::{fmt::Debug, sync::Arc};
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use rsa::{
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pkcs1::DecodeRsaPrivateKey,
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pss::SigningKey,
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sha2::Sha256,
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signature::{RandomizedSigner, SignatureEncoding},
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RsaPrivateKey,
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};
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use serde::{Deserialize, Serialize};
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use serde_json::Value;
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use crate::{
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instance::Instance,
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message::GiteratedMessage,
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object::{AnyObject, GiteratedObject},
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operation::{AnyOperation, GiteratedOperation},
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user::User,
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};
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#[derive(Debug, Serialize, Deserialize)]
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pub struct UserTokenMetadata {
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pub user: User,
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pub generated_for: Instance,
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pub exp: u64,
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}
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#[derive(Debug)]
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pub struct Authenticated<O: GiteratedObject, D: GiteratedOperation<O>> {
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pub source: Vec<Arc<dyn AuthenticationSourceProviders + Send + Sync>>,
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pub message: GiteratedMessage<O, D>,
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}
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#[derive(Debug, Clone, Hash, PartialEq, Eq, Serialize, Deserialize)]
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pub struct AuthenticatedPayload {
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pub source: Vec<AuthenticationSource>,
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pub object: String,
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pub operation: String,
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pub payload: Vec<u8>,
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}
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impl AuthenticatedPayload {
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pub fn into_message(self) -> GiteratedMessage<AnyObject, AnyOperation> {
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let payload = serde_json::from_slice::<Value>(&self.payload).unwrap();
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GiteratedMessage {
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object: AnyObject(self.object),
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operation: self.operation,
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payload: AnyOperation(payload),
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}
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}
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}
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pub trait AuthenticationSourceProvider: Debug {
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fn authenticate(&self, payload: &Vec<u8>) -> AuthenticationSource;
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}
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pub trait AuthenticationSourceProviders: Debug {
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fn authenticate_all(&self, payload: &Vec<u8>) -> Vec<AuthenticationSource>;
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}
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impl<A> AuthenticationSourceProviders for A
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where
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A: AuthenticationSourceProvider,
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{
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fn authenticate_all(&self, payload: &Vec<u8>) -> Vec<AuthenticationSource> {
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vec![self.authenticate(payload)]
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}
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}
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impl<A, B> AuthenticationSourceProviders for (A, B)
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where
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A: AuthenticationSourceProvider,
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B: AuthenticationSourceProvider,
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{
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fn authenticate_all(&self, payload: &Vec<u8>) -> Vec<AuthenticationSource> {
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let (first, second) = self;
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vec![first.authenticate(payload), second.authenticate(payload)]
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}
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}
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impl<O: GiteratedObject, D: GiteratedOperation<O>> Authenticated<O, D> {
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pub fn new(message: GiteratedMessage<O, D>) -> Self {
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Self {
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source: vec![],
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message,
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}
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}
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pub fn append_authentication(
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&mut self,
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authentication: Arc<dyn AuthenticationSourceProviders + Send + Sync>,
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) {
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self.source.push(authentication);
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}
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pub fn into_payload(mut self) -> AuthenticatedPayload {
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let payload = serde_json::to_vec(&self.message.payload).unwrap();
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AuthenticatedPayload {
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object: self.message.object.to_string(),
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operation: self.message.operation,
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source: self
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.source
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.drain(..)
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.map(|provider| provider.as_ref().authenticate_all(&payload))
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.flatten()
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.collect::<Vec<_>>(),
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payload,
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}
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}
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}
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mod verified {}
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#[derive(Clone, Debug)]
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pub struct UserAuthenticator {
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pub user: User,
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pub token: UserAuthenticationToken,
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}
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impl AuthenticationSourceProvider for UserAuthenticator {
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fn authenticate(&self, _payload: &Vec<u8>) -> AuthenticationSource {
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AuthenticationSource::User {
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user: self.user.clone(),
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token: self.token.clone(),
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}
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}
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}
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#[derive(Debug, Clone)]
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pub struct InstanceAuthenticator {
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pub instance: Instance,
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pub private_key: String,
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}
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impl AuthenticationSourceProvider for InstanceAuthenticator {
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fn authenticate(&self, payload: &Vec<u8>) -> AuthenticationSource {
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let mut rng = rand::thread_rng();
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let private_key = RsaPrivateKey::from_pkcs1_pem(&self.private_key).unwrap();
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let signing_key = SigningKey::<Sha256>::new(private_key);
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let signature = signing_key.sign_with_rng(&mut rng, payload);
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AuthenticationSource::Instance {
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instance: self.instance.clone(),
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signature: InstanceSignature(signature.to_bytes().into_vec()),
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}
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}
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}
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#[repr(transparent)]
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#[derive(Clone, Debug, Hash, PartialEq, Eq, Serialize, Deserialize)]
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pub struct UserAuthenticationToken(String);
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impl From<String> for UserAuthenticationToken {
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fn from(value: String) -> Self {
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Self(value)
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}
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}
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impl ToString for UserAuthenticationToken {
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fn to_string(&self) -> String {
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self.0.clone()
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}
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}
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impl AsRef<str> for UserAuthenticationToken {
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fn as_ref(&self) -> &str {
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&self.0
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}
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}
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#[derive(Clone, Debug, Hash, PartialEq, Eq, Serialize, Deserialize)]
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pub struct InstanceSignature(Vec<u8>);
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impl AsRef<[u8]> for InstanceSignature {
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fn as_ref(&self) -> &[u8] {
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&self.0
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}
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}
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#[derive(Clone, Debug, Hash, PartialEq, Eq, Serialize, Deserialize)]
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pub enum AuthenticationSource {
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User {
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user: User,
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token: UserAuthenticationToken,
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},
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Instance {
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instance: Instance,
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signature: InstanceSignature,
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},
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}
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|