basic authentification check

src/main.rs

@@ -20,6 +20,7 @@ mod auth;
 mod schema;
 
 use models::errors::ErrorResponse;
+use models::users::UserInfo;
 use auth::routes::*;
 
 
@@ -27,7 +28,12 @@ use auth::routes::*;
 pub struct DbConn(diesel::SqliteConnection);
 
 #[get("/zones/<zone>/records")]
-fn get_zone_records(client: State<SyncClient<TcpClientConnection>>, zone: String) -> Result<Json<Vec<models::dns::Record>>, ErrorResponse<()>> {
+fn get_zone_records(
+    client: State<SyncClient<TcpClientConnection>>,
+    _user_info: UserInfo,
+    zone: String
+) -> Result<Json<Vec<models::dns::Record>>, ErrorResponse<()>> {
+
     // TODO: Implement FromParam for Name
     let name = Name::from_utf8(&zone).unwrap();
 

src/models/errors.rs

@@ -54,8 +54,12 @@ impl<'r, T: Serialize> Responder<'r> for ErrorResponse<T> {
 impl From<UserError> for ErrorResponse<()> {
     fn from(e: UserError) -> Self {
         match e {
-            UserError::NotFound => ErrorResponse::new(Status::Unauthorized, "Incorrect password or username.".into()),
-            UserError::UserExists => ErrorResponse::new(Status::Conflict, "User already exists.".into()),
+            UserError::NotFound => ErrorResponse::new(Status::Unauthorized, "Provided credentials or token do not match any existing user".into()),
+            UserError::UserExists => ErrorResponse::new(Status::Conflict, "User already exists".into()),
+            UserError::BadToken => ErrorResponse::new(Status::BadRequest, "Malformed token".into()),
+            UserError::ExpiredToken => ErrorResponse::new(Status::Unauthorized, "The provided token has expired".into()),
+            UserError::MalformedHeader => ErrorResponse::new(Status::BadRequest, "Malformed authorization header".into()),
+            UserError::PermissionDenied => ErrorResponse::new(Status::Forbidden, "Bearer is not authorized to access the resource".into()),
             UserError::DbError(e) => make_500(e),
             UserError::PasswordError(e) => make_500(e)
         }

src/models/users.rs

@@ -2,17 +2,29 @@ use uuid::Uuid;
 use diesel::prelude::*;
 use diesel::result::Error as DieselError;
 use diesel_derive_enum::DbEnum;
-use rocket::request::{FromRequest, Request, Outcome};
+use rocket::request::{FromRequest, Request, Outcome, State};
 use serde::{Serialize, Deserialize};
+use rocket::http::Status;
 use chrono::serde::ts_seconds;
 use chrono::prelude::{DateTime, Utc};
 use chrono::Duration;
 // TODO: Maybe just use argon2 crate directly
 use djangohashers::{make_password_with_algorithm, check_password, HasherError, Algorithm};
-use jsonwebtoken::{encode, Header, EncodingKey, errors::Result as JwtResult};
+use jsonwebtoken::{
+    encode, decode,
+    Header, Validation,
+    Algorithm as JwtAlgorithm, EncodingKey, DecodingKey,
+    errors::Result as JwtResult,
+    errors::ErrorKind as JwtErrorKind
+};
 
 use crate::schema::*;
 use crate::DbConn;
+use crate::config::Config;
+
+
+const BEARER: &'static str = "Bearer ";
+const AUTH_HEADER: &'static str = "Authentication";
 
 
 #[derive(Debug, DbEnum, Deserialize)]
@@ -82,11 +94,44 @@ pub struct UserInfo {
 }
 
 impl<'a, 'r> FromRequest<'a, 'r> for UserInfo {
-    type Error = ();
+    type Error = UserError;
 
-    fn from_request(request: &'a Request<'r>) -> Outcome<UserInfo, ()> {
-        // LocalUser::get_user_by_uuid()
-        Outcome::Forward(())
+    fn from_request(request: &'a Request<'r>) -> Outcome<UserInfo, UserError> {
+        let auth_header = match request.headers().get_one(AUTH_HEADER) {
+            None => return Outcome::Forward(()),
+            Some(auth_header) => auth_header,
+        };
+
+        let token = if auth_header.starts_with(BEARER) {
+            auth_header.trim_start_matches(BEARER)
+        } else {
+            return Outcome::Failure((Status::BadRequest, UserError::MalformedHeader))
+        };
+
+        // TODO: Better error handling
+        let config = request.guard::<State<Config>>().unwrap();
+        let conn = request.guard::<DbConn>().unwrap();
+
+        let token_data = AuthClaims::decode(
+            token, &config.web_app.secret
+        ).map_err(|e| match e.into_kind() {
+            JwtErrorKind::ExpiredSignature => (Status::Unauthorized, UserError::ExpiredToken),
+            _ => (Status::BadRequest, UserError::BadToken),
+        });
+
+        let token_data = match token_data {
+            Err(e) => return Outcome::Failure(e),
+            Ok(data) => data
+        };
+
+        let user_id = token_data.sub;
+        let user_info = match LocalUser::get_user_by_uuid(&conn, user_id) {
+            Err(UserError::NotFound) => return Outcome::Failure((Status::NotFound, UserError::NotFound)),
+            Err(e) => return Outcome::Failure((Status::InternalServerError, e)),
+            Ok(d) => d,
+        };
+
+        return Outcome::Success(user_info)
     }
 }
 
@@ -94,6 +139,10 @@ impl<'a, 'r> FromRequest<'a, 'r> for UserInfo {
 pub enum UserError {
     NotFound,
     UserExists,
+    BadToken,
+    ExpiredToken,
+    MalformedHeader,
+    PermissionDenied,
     DbError(DieselError),
     PasswordError(HasherError),
 }
@@ -180,8 +229,19 @@ impl LocalUser {
         })
     }
 
-    pub fn get_user_by_uuid(user_id: Uuid) -> Result<UserInfo, ()> {
-        unimplemented!()
+    pub fn get_user_by_uuid(conn: &DbConn, request_user_id: String) -> Result<UserInfo, UserError> {
+        use crate::schema::localuser::dsl::*;
+        use crate::schema::user::dsl::*;
+
+        let (client_user, client_localuser): (User, LocalUser) = user.inner_join(localuser)
+            .filter(id.eq(request_user_id))
+            .get_result(&**conn)?;
+
+        Ok(UserInfo {
+            id: client_user.id,
+            role: client_user.role,
+            username: client_localuser.username,
+        })
     }
 
 }
@@ -200,7 +260,15 @@ impl AuthClaims {
         }
     }
 
+    pub fn decode(token: &str, secret: &str) -> JwtResult<AuthClaims> {
+        decode::<AuthClaims>(
+            token,
+            &DecodingKey::from_secret(secret.as_ref()),
+            &Validation::new(JwtAlgorithm::HS256)
+        ).and_then(|data| Ok(data.claims))
+    }
+
     pub fn encode(self, secret: &str) -> JwtResult<String> {
-        encode(&Header::default(), &self, &EncodingKey::from_secret(secret.as_bytes()))
+        encode(&Header::default(), &self, &EncodingKey::from_secret(secret.as_ref()))
     }
 }