add AuthResult resource result type

gotham_restful/src/auth.rs

@@ -308,6 +308,7 @@ mod test
 	// some known tokens
 	const VALID_TOKEN : &'static str = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJtc3JkMCIsInN1YiI6ImdvdGhhbS1yZXN0ZnVsIiwiaWF0IjoxNTc3ODM2ODAwLCJleHAiOjQxMDI0NDQ4MDB9.8h8Ax-nnykqEQ62t7CxmM3ja6NzUQ4L0MLOOzddjLKk";
 	const EXPIRED_TOKEN : &'static str = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJtc3JkMCIsInN1YiI6ImdvdGhhbS1yZXN0ZnVsIiwiaWF0IjoxNTc3ODM2ODAwLCJleHAiOjE1Nzc4MzcxMDB9.eV1snaGLYrJ7qUoMk74OvBY3WUU9M0Je5HTU2xtX1v0";
+	const INVALID_TOKEN : &'static str = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJtc3JkMCIsInN1YiI6ImdvdGhhbS1yZXN0ZnVsIiwiaWF0IjoxNTc3ODM2ODAwLCJleHAiOjQxMDI0NDQ4MDB9";
 	
 	#[derive(Debug, Deserialize, PartialEq)]
 	struct TestData
@@ -332,15 +333,27 @@ mod test
 	}
 	
 	#[derive(Default)]
-	struct TestHandler;
-	impl<T> AuthHandler<T> for TestHandler
+	struct NoneAuthHandler;
+	impl<T> AuthHandler<T> for NoneAuthHandler
 	{
 		fn jwt_secret<F : FnOnce() -> Option<T>>(&self, _state : &mut State, _decode_data : F) -> Option<Vec<u8>>
 		{
-			Some(JWT_SECRET.to_vec())
+			None
 		}
 	}
 	
+	#[test]
+	fn test_auth_middleware_none_secret()
+	{
+		let middleware = <AuthMiddleware<TestData, NoneAuthHandler>>::from_source(AuthSource::AuthorizationHeader);
+		State::with_new(|mut state| {
+			let mut headers = HeaderMap::new();
+			headers.insert(AUTHORIZATION, format!("Bearer {}", VALID_TOKEN).parse().unwrap());
+			state.put(headers);
+			middleware.auth_status(&mut state);
+		});
+	}
+	
 	#[derive(Default)]
 	struct TestAssertingHandler;
 	impl<T> AuthHandler<T> for TestAssertingHandler
@@ -365,10 +378,10 @@ mod test
 		});
 	}
 	
-	fn new_middleware<T>(source : AuthSource) -> AuthMiddleware<T, TestHandler>
+	fn new_middleware<T>(source : AuthSource) -> AuthMiddleware<T, StaticAuthHandler>
 	where T : DeserializeOwned + Send
 	{
-		AuthMiddleware::from_source(source)
+		AuthMiddleware::new(source, Default::default(), StaticAuthHandler::from_array(JWT_SECRET))
 	}
 	
 	#[test]
@@ -400,6 +413,22 @@ mod test
 		});
 	}
 	
+	#[test]
+	fn test_auth_middleware_invalid_token()
+	{
+		let middleware = new_middleware::<TestData>(AuthSource::AuthorizationHeader);
+		State::with_new(|mut state| {
+			let mut headers = HeaderMap::new();
+			headers.insert(AUTHORIZATION, format!("Bearer {}", INVALID_TOKEN).parse().unwrap());
+			state.put(headers);
+			let status = middleware.auth_status(&mut state);
+			match status {
+				AuthStatus::Invalid => {},
+				_ => panic!("Expected AuthStatus::Invalid, got {:?}", status)
+			};
+		});
+	}
+	
 	#[test]
 	fn test_auth_middleware_auth_header_token()
 	{

gotham_restful/src/lib.rs

@@ -170,6 +170,8 @@ pub use resource::{
 
 mod result;
 pub use result::{
+	AuthResult,
+	AuthResult::AuthErr,
 	NoContent,
 	Raw,
 	ResourceResult,

gotham_restful/src/result.rs

@@ -7,7 +7,10 @@ use mime::{Mime, APPLICATION_JSON, STAR_STAR};
 use openapiv3::{SchemaKind, StringFormat, StringType, Type, VariantOrUnknownOrEmpty};
 use serde::Serialize;
 use serde_json::error::Error as SerdeJsonError;
-use std::error::Error;
+use std::{
+	error::Error,
+	fmt::Debug
+};
 
 /// A response, used to create the final gotham response from.
 pub struct Response
@@ -49,6 +52,16 @@ impl Response
 		}
 	}
 	
+	/// Create an empty _403 Forbidden_ `Response`.
+	pub fn forbidden() -> Self
+	{
+		Self {
+			status: StatusCode::FORBIDDEN,
+			body: Body::empty(),
+			mime: None
+		}
+	}
+	
 	#[cfg(test)]
 	fn full_body(self) -> Vec<u8>
 	{
@@ -170,6 +183,21 @@ impl<T> From<T> for Success<T>
 	}
 }
 
+impl<T : Clone> Clone for Success<T>
+{
+	fn clone(&self) -> Self
+	{
+		Self(self.0.clone())
+	}
+}
+
+impl<T : Debug> Debug for Success<T>
+{
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		write!(f, "Success({:?})", self.0)
+	}
+}
+
 impl<T : ResponseBody> ResourceResult for Success<T>
 {
 	fn into_response(self) -> Result<Response, SerdeJsonError>
@@ -189,6 +217,98 @@ impl<T : ResponseBody> ResourceResult for Success<T>
 	}
 }
 
+/**
+This return type can be used to map another `ResourceResult` that can only be returned if the
+client is authenticated. Otherwise, an empty _403 Forbidden_ response will be issued. Use can
+look something like this (assuming the `auth` feature is enabled):
+
+```
+# #[macro_use] extern crate gotham_restful_derive;
+# use gotham::state::State;
+# use gotham_restful::*;
+# use serde::Deserialize;
+#
+# #[derive(Resource)]
+# struct MyResource;
+#
+# #[derive(Clone, Deserialize)]
+# struct MyAuthData { exp : u64 }
+#
+#[rest_read_all(MyResource)]
+fn read_all(auth : AuthStatus<MyAuthData>) -> AuthResult<NoContent> {
+	let auth_data = match auth {
+		AuthStatus::Authenticated(data) => data,
+		_ => return AuthErr
+	};
+	// do something
+	NoContent::default().into()
+}
+```
+*/
+pub enum AuthResult<T>
+{
+	Ok(T),
+	AuthErr
+}
+
+impl<T> From<T> for AuthResult<T>
+{
+	fn from(t : T) -> Self
+	{
+		Self::Ok(t)
+	}
+}
+
+impl<T : Clone> Clone for AuthResult<T>
+{
+	fn clone(&self) -> Self
+	{
+		match self {
+			Self::Ok(t) => Self::Ok(t.clone()),
+			Self::AuthErr => Self::AuthErr
+		}
+	}
+}
+
+impl<T : Debug> Debug for AuthResult<T>
+{
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		match self {
+			Self::Ok(t) => write!(f, "Ok({:?})", t),
+			Self::AuthErr => write!(f, "AuthErr")
+		}
+	}
+}
+
+impl<T : ResourceResult> ResourceResult for AuthResult<T>
+{
+	fn into_response(self) -> Result<Response, SerdeJsonError>
+	{
+		match self
+		{
+			Self::Ok(res) => res.into_response(),
+			Self::AuthErr => Ok(Response::forbidden())
+		}
+	}
+	
+	fn accepted_types() -> Option<Vec<Mime>>
+	{
+		T::accepted_types()
+	}
+	
+	#[cfg(feature = "openapi")]
+	fn schema() -> OpenapiSchema
+	{
+		T::schema()
+	}
+	
+	#[cfg(feature = "openapi")]
+	fn default_status() -> StatusCode
+	{
+		T::default_status()
+	}
+}
+
 /**
 This is the return type of a resource that doesn't actually return something. It will result
 in a _204 No Content_ answer by default. You don't need to use this type directly if using
@@ -282,6 +402,24 @@ impl<T> Raw<T>
 	}
 }
 
+impl<T : Clone> Clone for Raw<T>
+{
+	fn clone(&self) -> Self
+	{
+		Self {
+			raw: self.raw.clone(),
+			mime: self.mime.clone()
+		}
+	}
+}
+
+impl<T : Debug> Debug for Raw<T>
+{
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		write!(f, "Raw({:?}, {:?})", self.raw, self.mime)
+	}
+}
+
 impl<T : Into<Body>> ResourceResult for Raw<T>
 {
 	fn into_response(self) -> Result<Response, SerdeJsonError>