Timshel
1 week ago
6 changed files with 295 additions and 138 deletions
@ -0,0 +1,175 @@ |
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use chrono::{TimeDelta, Utc}; |
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use serde::{de::DeserializeOwned, ser::Serialize}; |
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use std::sync::LazyLock; |
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use crate::{ |
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CONFIG, |
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api::{ApiResult, EmptyResult}, |
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auth::{decode_jwt, encode_jwt}, |
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db::models::UserId, |
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}; |
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static JWT_2FA_AUTH_ISSUER: LazyLock<String> = LazyLock::new(|| format!("{}|api.2fa", CONFIG.domain_origin())); |
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#[derive(Serialize, Deserialize)] |
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pub struct TwopFactorClaims<T> { |
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// Not before
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pub nbf: i64, |
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// Expiration time
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pub exp: i64, |
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// Issuer
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pub iss: String, |
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// Subject
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pub sub: UserId, |
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pub enabled: bool, |
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pub claims: T, |
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} |
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#[derive(Serialize, Deserialize)] |
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pub struct AuthenticatorClaims { |
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pub key: String, |
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} |
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#[derive(Serialize, Deserialize)] |
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pub struct DuoClaims { |
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data: Option<DuoData>, |
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} |
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#[derive(Serialize, Deserialize, PartialEq)] |
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pub struct DuoData { |
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pub host: String, // Duo API hostname
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pub ik: String, // client id
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pub sk: String, // client secret
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} |
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impl DuoData { |
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pub fn global() -> Option<Self> { |
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match (CONFIG._enable_duo(), CONFIG.duo_host()) { |
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(true, Some(host)) => Some(Self { |
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host, |
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ik: CONFIG.duo_ikey().unwrap(), |
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sk: CONFIG.duo_skey().unwrap(), |
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}), |
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_ => None, |
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} |
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} |
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pub fn msg(s: &str) -> Self { |
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Self { |
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host: s.into(), |
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ik: s.into(), |
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sk: s.into(), |
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} |
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} |
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pub fn secret() -> Self { |
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Self::msg("<global_secret>") |
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} |
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pub fn obscure(self) -> Self { |
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let mut host = self.host; |
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let mut ik = self.ik; |
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let mut sk = self.sk; |
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let digits = 4; |
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let replaced = "************"; |
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host.replace_range(digits.., replaced); |
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ik.replace_range(digits.., replaced); |
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sk.replace_range(digits.., replaced); |
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Self { |
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host, |
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ik, |
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sk, |
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} |
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} |
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} |
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#[derive(Serialize, Deserialize)] |
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pub struct EmailClaims { |
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pub email: Option<String>, |
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} |
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fn token<T: Serialize>(user_id: UserId, enabled: bool, claims: T) -> String { |
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let time_now = Utc::now(); |
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let claims = TwopFactorClaims { |
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nbf: time_now.timestamp(), |
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exp: (time_now + TimeDelta::try_minutes(5).unwrap()).timestamp(), |
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iss: JWT_2FA_AUTH_ISSUER.to_string(), |
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sub: user_id, |
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enabled, |
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claims, |
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}; |
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encode_jwt(&claims) |
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} |
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fn validate<T: DeserializeOwned>(token: &str, user_id: &UserId, enabled: bool) -> ApiResult<T> { |
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match decode_jwt::<TwopFactorClaims<T>>(token, JWT_2FA_AUTH_ISSUER.to_string()) { |
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Ok(claims) => { |
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if claims.sub != *user_id { |
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err!("Invalid verification token: Invalid user"); |
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} |
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if claims.enabled != enabled { |
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err!("Invalid verification token: Invalid state"); |
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} |
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Ok(claims.claims) |
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} |
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Err(err) => err!(format!("Failed to decode verification token: {err}")), |
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} |
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} |
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pub fn authenticator_token(user_id: UserId, key: String, enabled: bool) -> String { |
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token( |
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user_id, |
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enabled, |
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AuthenticatorClaims { |
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key, |
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}, |
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) |
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} |
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pub fn validate_authenticator(token: &str, user_id: &UserId, key: &str, enabled: bool) -> EmptyResult { |
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let claims = validate::<AuthenticatorClaims>(token, user_id, enabled)?; |
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if claims.key != key { |
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err!("Invalid verification token: Invalid key"); |
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} |
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Ok(()) |
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} |
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pub fn duo_token(user_id: UserId, data: Option<DuoData>, enabled: bool) -> String { |
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token( |
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user_id, |
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enabled, |
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DuoClaims { |
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data, |
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}, |
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) |
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} |
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// When disabling we check that it's the correct data
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pub fn validate_duo(token: &str, user_id: &UserId, data: Option<&DuoData>, enabled: bool) -> EmptyResult { |
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let claims = validate::<DuoClaims>(token, user_id, enabled)?; |
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if enabled && claims.data.as_ref() != data { |
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err!("Invalid verification token: Invalid duo data"); |
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} |
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Ok(()) |
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} |
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pub fn email_token(user_id: UserId, email: Option<String>, enabled: bool) -> String { |
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token( |
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user_id, |
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enabled, |
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EmailClaims { |
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email, |
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}, |
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) |
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} |
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// When disabling we check that it's the correct `email`
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pub fn validate_email(token: &str, user_id: &UserId, email: String, enabled: bool) -> EmptyResult { |
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let claims = validate::<EmailClaims>(token, user_id, enabled)?; |
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if enabled && claims.email != Some(email) { |
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err!("Invalid verification token: Invalid email"); |
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} |
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Ok(()) |
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} |
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