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use anyhow::Error;
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use jsonwebtoken::{decode, encode, Algorithm, DecodingKey, EncodingKey, TokenData, Validation};
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use serde::{Deserialize, Serialize};
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use std::time::SystemTime;
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use tokio::{fs::File, io::AsyncReadExt};
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use toml::Table;
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use crate::{
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messages::authentication::{AuthenticationTokenResponse, TokenExtensionResponse},
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model::{authenticated::UserAuthenticationToken, instance::Instance, 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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exp: u64,
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}
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pub struct AuthenticationTokenGranter {
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pub config: Table,
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pub instance: Instance,
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}
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impl AuthenticationTokenGranter {
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async fn private_key(&self) -> Vec<u8> {
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let _secret_key = self.config["authentication"]["secret_key"]
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.as_str()
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.unwrap();
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let mut file = File::open(
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self.config["giterated"]["keys"]["private"]
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.as_str()
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.unwrap(),
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)
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.await
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.unwrap();
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let mut key = vec![];
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file.read_to_end(&mut key).await.unwrap();
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key
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}
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pub(crate) async fn create_token_for(
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&mut self,
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user: &User,
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generated_for: &Instance,
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) -> String {
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let private_key = self.private_key().await;
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let encoding_key = EncodingKey::from_rsa_pem(&private_key).unwrap();
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let claims = UserTokenMetadata {
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user: user.clone(),
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generated_for: generated_for.clone(),
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exp: (SystemTime::UNIX_EPOCH.elapsed().unwrap()
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+ std::time::Duration::from_secs(24 * 60 * 60))
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.as_secs(),
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};
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encode(
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&jsonwebtoken::Header::new(Algorithm::RS256),
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&claims,
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&encoding_key,
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)
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.unwrap()
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}
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pub async fn token_request(
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&mut self,
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issued_for: impl ToOwned<Owned = Instance>,
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username: String,
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_password: String,
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) -> Result<AuthenticationTokenResponse, Error> {
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let private_key = {
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let mut file = File::open(
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self.config["giterated"]["keys"]["private"]
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.as_str()
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.unwrap(),
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)
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.await
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.unwrap();
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let mut key = vec![];
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file.read_to_end(&mut key).await.unwrap();
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key
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};
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let encoding_key = EncodingKey::from_rsa_pem(&private_key).unwrap();
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let claims = UserTokenMetadata {
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user: User {
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username,
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instance: self.instance.clone(),
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},
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generated_for: issued_for.to_owned(),
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exp: (SystemTime::UNIX_EPOCH.elapsed().unwrap()
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+ std::time::Duration::from_secs(24 * 60 * 60))
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.as_secs(),
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};
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let token = encode(
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&jsonwebtoken::Header::new(Algorithm::RS256),
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&claims,
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&encoding_key,
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)
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.unwrap();
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Ok(AuthenticationTokenResponse {
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token: UserAuthenticationToken::from(token),
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})
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}
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pub async fn extension_request(
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&mut self,
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issued_for: &Instance,
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token: UserAuthenticationToken,
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) -> Result<TokenExtensionResponse, Error> {
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let server_public_key = public_key(&self.instance).await.unwrap();
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let verification_key = DecodingKey::from_rsa_pem(server_public_key.as_bytes()).unwrap();
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let data: TokenData<UserTokenMetadata> = decode(
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token.as_ref(),
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&verification_key,
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&Validation::new(Algorithm::RS256),
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)
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.unwrap();
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if data.claims.generated_for != *issued_for {
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panic!()
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}
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info!("Token Extension Request Token validated");
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let private_key = {
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let mut file = File::open(
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self.config["giterated"]["keys"]["private"]
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.as_str()
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.unwrap(),
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)
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.await
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.unwrap();
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let mut key = vec![];
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file.read_to_end(&mut key).await.unwrap();
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key
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};
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let encoding_key = EncodingKey::from_rsa_pem(&private_key).unwrap();
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let claims = UserTokenMetadata {
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user: data.claims.user,
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generated_for: issued_for.clone(),
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exp: (SystemTime::UNIX_EPOCH.elapsed().unwrap()
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+ std::time::Duration::from_secs(24 * 60 * 60))
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.as_secs(),
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};
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let token = encode(
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&jsonwebtoken::Header::new(Algorithm::RS256),
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&claims,
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&encoding_key,
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)
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.unwrap();
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Ok(TokenExtensionResponse {
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new_token: Some(token),
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})
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}
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}
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async fn public_key(instance: &Instance) -> Result<String, Error> {
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let key = reqwest::get(format!("https://{}/.giterated/pubkey.pem", instance.url))
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.await?
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.text()
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.await?;
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Ok(key)
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}
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|