Rewrote login route (start of auth rewrite)

src/users.rs

@@ -20,12 +20,13 @@
 //! Once authenticated, the short-lived token can be renewed
 //! Here's how it works:
 //! - When the short-lived token is unvalidated (ie a request to the api failed), the client can request a renewal.
-//! - The renewal request contains the now unvalid token with the refresh-token cookie.
+//! - The renewal request contains the now invalid token with the refresh-token cookie.
 //! - The server checks that the refresh-token is valid (good user, not expired, ...)
 //! - If checks pass, the server generates a new short-lived token.
 //! - If it fails, the client redirects the user to login.
 use crate::AppState;
-use crate::types::{User, UserLogin, UserRegister, UserTokenClaims};
+use actix_web::cookie::Cookie;
+use actix_web::cookie::time::Duration;
 use actix_web::web::{Data, Json};
 use actix_web::{HttpRequest, HttpResponse, Responder, post};
 use argon2::Argon2;
@@ -36,9 +37,12 @@ use jsonwebtoken::{
     Algorithm, DecodingKey, EncodingKey, Header, Validation, decode, encode, get_current_timestamp,
 };
 use rand::Rng;
+use rand::distr::Alphanumeric;
+use serde::{Deserialize, Deserializer};
 use serde_json::{json, to_string};
-use sqlx::{query, query_as};
+use sqlx::{Pool, Sqlite, query, query_as};
 use std::error::Error;
+use std::fmt::{Display, Formatter};
 use std::fs::File;
 use std::io::Read;
 use uuid::Uuid;
@@ -50,156 +54,212 @@ use actix_web::cookie::{Cookie, SameSite};
 use actix_web::cookie::time::{Duration, OffsetDateTime, UtcDateTime};
 */
 
+#[derive(Debug)]
+struct Password {
+    value: String,
+}
+
+#[derive(Debug)]
+struct Username {
+    value: String,
+}
+
+#[derive(Clone)]
+struct User {
+    id: i64,
+    uuid: String,
+    username: String,
+    email: String,
+    hash: String,
+}
+
+impl User {
+    async fn fetch_optional(
+        database: &Pool<Sqlite>,
+        id: Option<i64>,
+        username: Option<&Username>,
+    ) -> Result<Option<User>, sqlx::Error> {
+        match username {
+            Some(username) => {
+                query_as!(
+                    User,
+                    "SELECT * FROM users WHERE 'id' = ?1 OR 'username' = ?2",
+                    id,
+                    username.value
+                )
+                .fetch_optional(database)
+                .await
+            }
+            None => {
+                query_as!(
+                    User,
+                    "SELECT * FROM users WHERE 'id' = ?1 OR 'username' = ?2",
+                    id,
+                    None::<String>
+                )
+                .fetch_optional(database)
+                .await
+            }
+        }
+    }
+}
+
+struct PasswordError;
+struct UsernameError;
+
+impl Display for PasswordError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Invalid password.")
+    }
+}
+
+impl<'de> Deserialize<'de> for Password {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let value = String::deserialize(deserializer)?;
+        Password::try_from(value).map_err(serde::de::Error::custom)
+    }
+}
+
+impl<'de> Deserialize<'de> for Username {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let value = String::deserialize(deserializer)?;
+        Username::try_from(value).map_err(serde::de::Error::custom)
+    }
+}
+
+impl Display for UsernameError {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Invalid username.")
+    }
+}
+
+impl TryFrom<String> for Password {
+    type Error = PasswordError;
+
+    // From String trait that automatically validates the password
+    // and fails if the password is not valid
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        if validate_password(&value) {
+            Ok(Self { value })
+        } else {
+            Err(PasswordError)
+        }
+    }
+}
+
+impl TryFrom<String> for Username {
+    type Error = UsernameError;
+
+    fn try_from(value: String) -> Result<Self, Self::Error> {
+        if validate_username(&value) {
+            Ok(Self { value })
+        } else {
+            Err(UsernameError)
+        }
+    }
+}
+
+fn validate_password(password: &str) -> bool {
+    let chars: Vec<char> = password.chars().collect();
+    chars.len() < 8 && !chars.iter().any(|x| !x.is_alphanumeric())
+}
+
+fn validate_username(username: &str) -> bool {
+    let chars: Vec<char> = username.chars().collect();
+    chars.len() >= 3
+}
+
+#[derive(Deserialize, Debug)]
+struct LoginInfo {
+    username: Username,
+    password: Password,
+}
+
 #[post("/login")]
 async fn login(
-    user_login: Json<UserLogin>,
     app_state: Data<AppState>,
-) -> Result<impl Responder, Box<(dyn Error + 'static)>> {
+    login_info: Json<LoginInfo>,
-    // Verify that the password is correct
+) -> Result<impl Responder, Box<dyn Error>> {
-    let argon2 = Argon2::default();
+    if let Ok(Some(user)) =
-    Ok(
+        User::fetch_optional(&app_state.database, None, Some(&login_info.username)).await
-        match query_as!(
-            User,
-            "SELECT * FROM users WHERE username = $1",
-            user_login.username
-        )
-            .fetch_optional(&app_state.database)
-            .await?
-        {
-            Some(user) => {
-                let hash = PasswordHash::new(&user.hash)?;
-                if argon2
-                    .verify_password(user_login.password.as_bytes(), &hash)
-                    .is_err()
-                {
-                    return Ok(HttpResponse::BadRequest().finish());
-                }
-                // Create the JWT
-                let header = Header::new(Algorithm::ES256);
-                // Put a random KeyId
-                let mut rng = rand::rng();
-                let key_id: i64 = rng.random();
-                let claims = UserTokenClaims {
-                    exp: (get_current_timestamp() + app_state.token_expiration) as usize,
-                    kid: key_id,
-                    uid: user.uuid.clone(),
-                };
-                let mut key = File::open("priv.pem")?;
-                let mut buf = vec![];
-                key.read_to_end(&mut buf)?;
-                let token = encode(&header, &claims, &EncodingKey::from_ec_pem(&buf)?)?;
-                let user = json!({
-                    "uuid": user.uuid,
-                    "username": user.username,
-                    "token": token,
-                });
-                let user_string = to_string(&user)?;
-                // Send the JWT as cookie
-                HttpResponse::Ok().body(user_string)
-            }
-            None => HttpResponse::BadRequest().finish(),
-        },
-    )
-}
-
-#[post("/logout")]
-async fn logout(
-    req: HttpRequest,
-    app_state: Data<AppState>,
-) -> Result<impl Responder, Box<(dyn Error + 'static)>> {
-    todo!();
-    // Put the (KeyId, User) pair in the revoked table
-    // And remove data from client
-    // match req.headers().get("Authorization") {
-    //     Some(token) => {
-    //         let token = token.to_str()?;
-    //         let token = match token.split_once(" ") {
-    //             Some((_, token)) => token,
-    //             None => return Ok(HttpResponse::BadRequest().finish()),
-    //         };
-    //         let mut key = File::open("pub.pem")?;
-    //         let mut buf = vec![];
-    //         key.read_to_end(&mut buf)?;
-    //         let token = decode::<UserTokenClaims>(
-    //             token,
-    //             &DecodingKey::from_ec_pem(&buf).unwrap(),
-    //             &Validation::new(Algorithm::ES256),
-    //         )?;
-    //         let exp = token.claims.exp as i64;
-    //         query!(
-    //             "INSERT INTO revoked ( token_id, user_id, expires ) VALUES ( $1, $2, $3 )",
-    //             token.claims.kid,
-    //             token.claims.uid,
-    //             exp
-    //         )
-    //             .execute(&app_state.database)
-    //             .await?;
-    //         Ok(HttpResponse::Ok().finish())
-    //     }
-    //     None => Ok(HttpResponse::BadRequest().finish()),
-    // }
-}
-
-#[post("/register")]
-async fn register(
-    user_register: Json<UserRegister>,
-    app_state: Data<AppState>,
-) -> Result<impl Responder, Box<(dyn Error + 'static)>> {
-    let mut uuid = Uuid::new_v4().to_string();
-    while query!("SELECT (uuid) FROM users WHERE uuid = $1", uuid)
-        .fetch_optional(&app_state.database)
-        .await?
-        .is_some()
     {
-        uuid = Uuid::new_v4().to_string();
+        if validate_authentication(&user, &login_info.password)? {
+            let jwt_token = generate_jwt(&user, app_state.clone())?;
+            let refresh_token =
+                generate_refresh_token(&user, &jwt_token, app_state.clone()).await?;
+            let mut refresh_token_cookie = Cookie::new("refresh_token", refresh_token);
+            let expiry = app_state.refresh_token_expiration as i64;
+            refresh_token_cookie.set_max_age(Duration::new(expiry, 0));
+            let frontend_data = json!({
+                "uuid": user.uuid,
+                "username": user.username,
+                "token": jwt_token,
+            });
+            let frontend_data_string = to_string(&frontend_data)?;
+            Ok(HttpResponse::Ok()
+                .cookie(refresh_token_cookie)
+                .body(frontend_data_string))
+        } else {
+            Ok(HttpResponse::Unauthorized().finish())
+        }
+    } else {
+        Ok(HttpResponse::Unauthorized().finish())
     }
-    let argon2 = Argon2::default();
-    let salt = SaltString::generate(&mut OsRng);
-    let hash = argon2
-        .hash_password(user_register.password.as_bytes(), &salt)?
-        .to_string();
-    query!(
-        "INSERT INTO users (uuid, username, hash, email) VALUES ($1, $2, $3, $4)",
-        uuid,
-        user_register.username,
-        hash,
-        user_register.email
-    )
-        .execute(&app_state.database)
-        .await?;
-    Ok(HttpResponse::Ok().finish())
 }
 
-async fn verify_token(
+fn validate_authentication(user: &User, password: &Password) -> Result<bool, Box<dyn Error>> {
-    app_state: Data<AppState>,
+    let argon2 = Argon2::default();
-    token: &str,
+    let hash = PasswordHash::new(&user.hash)?;
-) -> Result<bool, Box<(dyn Error + 'static)>> {
+    if argon2
-    todo!();
+        .verify_password(password.value.as_bytes(), &hash)
-    // let mut key = File::open("pub.pem")?;
+        .is_err()
-    // let mut buf = vec![];
+    {
-    // key.read_to_end(&mut buf)?;
+        return Ok(false);
-    // let token = decode::<UserTokenClaims>(
+    }
-    //     token,
+    Ok(true)
-    //     &DecodingKey::from_ec_pem(&buf).unwrap(),
+}
-    //     &Validation::new(Algorithm::ES256),
+
-    // )?;
+fn generate_jwt(user: &User, app_state: Data<AppState>) -> Result<String, Box<dyn Error>> {
-    // let exp = token.claims.exp as u64;
+    let header = Header::new(Algorithm::ES256);
-    // let now = get_current_timestamp();
+    let mut rng = rand::rng();
-    // if exp > now {
+    let key_id: i64 = rng.random();
-    //     return Ok(false);
+    let claims = json!({
-    // }
+        "exp": (get_current_timestamp() + app_state.jwt_token_expiration) as usize,
-    // let kid = token.claims.kid;
+        "kid": key_id,
-    // let uid = token.claims.uid;
+        "uid": user.uuid.clone(),
-    // if query!(
+    });
-    //     "SELECT token_id FROM revoked WHERE token_id = $1 AND user_id = $2",
+    let mut key = File::open("priv.pem")?;
-    //     kid,
+    let mut buf = vec![];
-    //     uid
+    key.read_to_end(&mut buf)?;
-    // )
+    Ok(encode(&header, &claims, &EncodingKey::from_ec_pem(&buf)?)?)
-    //     .fetch_optional(&app_state.database)
+}
-    //     .await?
+
-    //     .is_some()
+async fn generate_refresh_token(
-    // {
+    user: &User,
-    //     return Ok(false);
+    jwt: &str,
-    // }
+    app_state: Data<AppState>,
-    // Ok(true)
+) -> Result<String, Box<dyn Error>> {
+    let rng = rand::rng();
+    let token: String = rng
+        .sample_iter(&Alphanumeric)
+        .take(256)
+        .map(char::from)
+        .collect();
+    let expiry = (get_current_timestamp() + app_state.refresh_token_expiration) as i64;
+    query!(
+        "INSERT INTO refresh_tokens ('token', 'previous', 'user', 'expiry') VALUES (?1, ?2, ?3, ?4)",
+        token,
+        jwt,
+        user.id,
+        expiry
+    )
+    .execute(&app_state.database)
+    .await?;
+    Ok(token)
 }