Moved JWT config to config file

Cargo.lock

@@ -296,6 +296,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
 
+[[package]]
+name = "dtoa"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
+
 [[package]]
 name = "either"
 version = "1.6.1"
@@ -320,6 +326,7 @@ dependencies = [
  "atomic",
  "pear",
  "serde",
+ "serde_yaml",
  "toml",
  "uncased",
  "version_check",
@@ -641,6 +648,12 @@ version = "0.2.99"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7f823d141fe0a24df1e23b4af4e3c7ba9e5966ec514ea068c93024aa7deb765"
 
+[[package]]
+name = "linked-hash-map"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
+
 [[package]]
 name = "lock_api"
 version = "0.4.4"
@@ -1185,6 +1198,7 @@ dependencies = [
  "chrono",
  "diesel",
  "diesel_migrations",
+ "figment",
  "hmac",
  "jwt",
  "openssl",
@@ -1270,6 +1284,18 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serde_yaml"
+version = "0.8.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "039ba818c784248423789eec090aab9fb566c7b94d6ebbfa1814a9fd52c8afb2"
+dependencies = [
+ "dtoa",
+ "linked-hash-map",
+ "serde",
+ "yaml-rust",
+]
+
 [[package]]
 name = "sha1"
 version = "0.6.0"
@@ -1738,6 +1764,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "yaml-rust"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56c1936c4cc7a1c9ab21a1ebb602eb942ba868cbd44a99cb7cdc5892335e1c85"
+dependencies = [
+ "linked-hash-map",
+]
+
 [[package]]
 name = "yansi"
 version = "0.5.0"

Cargo.toml

@@ -34,6 +34,8 @@ sha2 = "*"
 chrono = { version = "*", features = [ "serde" ] }
 # Encoding of refresh tokens
 base64 = "0.13.0"
+# Reading in configuration files
+figment = { version = "*", features = [ "yaml" ] }
 
 [profile.release]
 lto = true

Rb.yaml

@@ -0,0 +1,23 @@
+default:
+  address: "0.0.0.0"
+  ports: 8000
+
+debug:
+  keep_alive: 5
+  read_timeout: 5
+  write_timeout: 5
+  log_level: "normal"
+  limits:
+    forms: 32768
+
+  admin_user: "admin"
+  admin_pass: "password"
+  jwt:
+    key: "secret"
+    refresh_token_size: 64
+    # Just 5 seconds for debugging
+    refresh_token_expire: 5
+
+  databases:
+    postgres_rb:
+      url: "postgres://rb:rb@localhost:5432/rb"

Rocket.toml

@@ -1,13 +0,0 @@
-[debug]
-port = 8000
-keep_alive = 5
-read_timeout = 5
-write_timeout = 5
-log_level = "normal"
-limits = { forms = 32768 }
-
-[debug.databases]
-postgres_rb = { url = "postgres://rb:rb@localhost:5432/rb" }
-
-[release.databases]
-postgres_rb = { url = "postgres://rb:rb@localhost:5432/rb" }

src/auth/jwt.rs

@@ -11,6 +11,7 @@ use crate::{
     db::{tokens::NewRefreshToken, users::User},
     errors::{RbError, RbResult},
     schema::{refresh_tokens::dsl as refresh_tokens, users::dsl as users},
+    RbJwtConf,
 };
 
 #[derive(Serialize)]
@@ -30,10 +31,13 @@ pub struct Claims
     pub exp: i64,
 }
 
-pub fn generate_jwt_token(conn: &PgConnection, user: &User) -> RbResult<JWTResponse>
+pub fn generate_jwt_token(
+    conn: &PgConnection,
+    jwt: &RbJwtConf,
+    user: &User,
+) -> RbResult<JWTResponse>
 {
-    let secret = std::env::var("JWT_KEY").map_err(|_| RbError::Custom("Missing JWT key."))?;
-    let key: Hmac<Sha256> = Hmac::new_from_slice(secret.as_bytes())
+    let key: Hmac<Sha256> = Hmac::new_from_slice(jwt.key.as_bytes())
         .map_err(|_| RbError::Custom("Couldn't create Hmac key."))?;
 
     let current_time = Utc::now();
@@ -43,7 +47,7 @@ pub fn generate_jwt_token(conn: &PgConnection, user: &User) -> RbResult<JWTRespo
         id: user.id,
         username: user.username.clone(),
         admin: user.admin,
-        exp: current_time.timestamp() + crate::JWT_EXP_SECONDS,
+        exp: current_time.timestamp() + jwt.refresh_token_expire,
     };
 
     // Sign the claims into a new token
@@ -52,11 +56,11 @@ pub fn generate_jwt_token(conn: &PgConnection, user: &User) -> RbResult<JWTRespo
         .map_err(|_| RbError::Custom("Couldn't sign JWT."))?;
 
     // Generate a random refresh token
-    let mut refresh_token = [0u8; crate::REFRESH_TOKEN_N_BYTES];
+    let mut refresh_token = vec![0u8; jwt.refresh_token_size];
     thread_rng().fill(&mut refresh_token[..]);
 
     let refresh_expire =
-        (current_time + chrono::Duration::seconds(crate::REFRESH_TOKEN_EXP_SECONDS)).naive_utc();
+        (current_time + chrono::Duration::seconds(jwt.refresh_token_expire)).naive_utc();
 
     // Store refresh token in database
     db::tokens::create(
@@ -74,7 +78,11 @@ pub fn generate_jwt_token(conn: &PgConnection, user: &User) -> RbResult<JWTRespo
     })
 }
 
-pub fn refresh_token(conn: &PgConnection, refresh_token: &str) -> RbResult<JWTResponse>
+pub fn refresh_token(
+    conn: &PgConnection,
+    jwt: &RbJwtConf,
+    refresh_token: &str,
+) -> RbResult<JWTResponse>
 {
     let token_bytes =
         base64::decode(refresh_token).map_err(|_| RbError::AuthInvalidRefreshToken)?;
@@ -108,5 +116,5 @@ pub fn refresh_token(conn: &PgConnection, refresh_token: &str) -> RbResult<JWTRe
         .execute(conn)
         .map_err(|_| RbError::Custom("Couldn't update last used time."))?;
 
-    generate_jwt_token(conn, &user)
+    generate_jwt_token(conn, jwt, &user)
 }

src/auth/mod.rs

@@ -1,11 +1,11 @@
-use rocket::serde::json::Json;
+use rocket::{serde::json::Json, State};
 use serde::Deserialize;
 
 use self::{
     jwt::{generate_jwt_token, JWTResponse},
     pass::verify_user,
 };
-use crate::{errors::RbResult, guards::User, RbDbConn};
+use crate::{errors::RbResult, guards::User, RbConfig, RbDbConn, RbJwtConf};
 
 pub mod jwt;
 pub mod pass;
@@ -24,16 +24,24 @@ pub async fn already_logged_in(_user: User) -> String
 }
 
 #[post("/login", data = "<credentials>", rank = 2)]
-pub async fn login(conn: RbDbConn, credentials: Json<Credentials>) -> RbResult<Json<JWTResponse>>
+pub async fn login(
+    conn: RbDbConn,
+    conf: &State<RbConfig>,
+    credentials: Json<Credentials>,
+) -> RbResult<Json<JWTResponse>>
 {
     let credentials = credentials.into_inner();
+    let jwt = conf.jwt.clone();
 
     // Get the user, if credentials are valid
     let user = conn
         .run(move |c| verify_user(c, &credentials.username, &credentials.password))
         .await?;
 
-    Ok(Json(conn.run(move |c| generate_jwt_token(c, &user)).await?))
+    Ok(Json(
+        conn.run(move |c| generate_jwt_token(c, &jwt, &user))
+            .await?,
+    ))
 }
 
 #[derive(Deserialize)]
@@ -46,13 +54,15 @@ pub struct RefreshTokenRequest
 #[post("/refresh", data = "<refresh_token_request>")]
 pub async fn refresh_token(
     conn: RbDbConn,
+    conf: &State<RbConfig>,
     refresh_token_request: Json<RefreshTokenRequest>,
 ) -> RbResult<Json<JWTResponse>>
 {
     let refresh_token = refresh_token_request.into_inner().refresh_token;
+    let jwt = conf.jwt.clone();
 
     Ok(Json(
-        conn.run(move |c| crate::auth::jwt::refresh_token(c, &refresh_token))
+        conn.run(move |c| crate::auth::jwt::refresh_token(c, &jwt, &refresh_token))
             .await?,
     ))
 }

src/main.rs

@@ -8,8 +8,13 @@ extern crate diesel_migrations;
 #[macro_use]
 extern crate diesel;
 
+use figment::{
+    providers::{Env, Format, Yaml},
+    Figment,
+};
 use rocket::{fairing::AdHoc, Build, Rocket};
 use rocket_sync_db_pools::database;
+use serde::{Deserialize, Serialize};
 
 mod admin;
 pub mod auth;
@@ -18,14 +23,6 @@ pub mod errors;
 pub mod guards;
 pub(crate) mod schema;
 
-// Any import defaults are defined here
-/// Expire time for the JWT tokens in seconds.
-const JWT_EXP_SECONDS: i64 = 600;
-/// Amount of bytes the refresh tokens should consist of
-const REFRESH_TOKEN_N_BYTES: usize = 64;
-/// Expire time for refresh tokens; here: one week
-const REFRESH_TOKEN_EXP_SECONDS: i64 = 604800;
-
 #[database("postgres_rb")]
 pub struct RbDbConn(diesel::PgConnection);
 
@@ -60,16 +57,37 @@ async fn create_admin_user(rocket: Rocket<Build>) -> Result<Rocket<Build>, Rocke
     Ok(rocket)
 }
 
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct RbJwtConf
+{
+    key: String,
+    refresh_token_size: usize,
+    refresh_token_expire: i64,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct RbConfig
+{
+    admin_user: String,
+    admin_pass: String,
+    jwt: RbJwtConf,
+}
+
 #[launch]
 fn rocket() -> _
 {
-    rocket::build()
+    let figment = Figment::from(rocket::config::Config::default())
+        .merge(Yaml::file("Rb.yaml").nested())
+        .merge(Env::prefixed("RB_").global());
+
+    rocket::custom(figment)
         .attach(RbDbConn::fairing())
         .attach(AdHoc::try_on_ignite(
             "Run database migrations",
             run_db_migrations,
         ))
         .attach(AdHoc::try_on_ignite("Create admin user", create_admin_user))
+        .attach(AdHoc::config::<RbConfig>())
         .mount(
             "/api/auth",
             routes![auth::already_logged_in, auth::login, auth::refresh_token,],