Add token authentication for controllers

src/constants.rs

@@ -1,6 +1,10 @@
 use std::time::Duration;
 
 pub const DEFAULT_PORT: u16 = 4419;
+pub const DEFAULT_TOKEN: &str = "emgauwa_token";
+
+pub const CONTROLLER_WS_TOKEN_HEADER: &str = "X-Emgauwa-Token";
+
 pub const HEARTBEAT_INTERVAL: Duration = Duration::from_secs(5);
 pub const HEARTBEAT_TIMEOUT: Duration = Duration::from_secs(15);
 

src/errors/emgauwa_error.rs

@@ -15,6 +15,7 @@ use crate::types::EmgauwaUid;
 #[derive(Debug)]
 pub enum EmgauwaError {
 	Api(ApiError),
+	Unauthorized(String),
 	Uid(uuid::Error),
 	Serialization(serde_json::Error),
 	Database(DatabaseError),
@@ -28,6 +29,7 @@ impl EmgauwaError {
 	fn get_code(&self) -> StatusCode {
 		match self {
 			EmgauwaError::Api(err) => err.get_code(),
+			EmgauwaError::Unauthorized(_) => StatusCode::UNAUTHORIZED,
 			EmgauwaError::Serialization(_) => StatusCode::INTERNAL_SERVER_ERROR,
 			EmgauwaError::Database(err) => err.get_code(),
 			EmgauwaError::Uid(_) => StatusCode::BAD_REQUEST,
@@ -43,6 +45,7 @@ impl From<&EmgauwaError> for String {
 	fn from(err: &EmgauwaError) -> Self {
 		match err {
 			EmgauwaError::Api(err) => String::from(err),
+			EmgauwaError::Unauthorized(_) => format!("unauthorized request: {}", err),
 			EmgauwaError::Serialization(_) => String::from("error during (de-)serialization"),
 			EmgauwaError::Database(err) => String::from(err),
 			EmgauwaError::Uid(_) => String::from("the uid is in a bad format"),

src/settings.rs

@@ -9,6 +9,7 @@ use crate::errors::EmgauwaError;
 pub struct Server {
 	pub host: String,
 	pub port: u16,
+	pub token: String,
 }
 
 #[derive(Clone, Debug, Deserialize)]
@@ -31,6 +32,7 @@ impl Default for Server {
 		Server {
 			host: String::from("127.0.0.1"),
 			port: constants::DEFAULT_PORT,
+			token: String::from(constants::DEFAULT_TOKEN),
 		}
 	}
 }