splinter 0.3.14

// Copyright 2018-2020 Cargill Incorporated
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::sync::Arc;

use crate::actix_web::HttpResponse;
use crate::futures::{Future, IntoFuture};
use crate::protocol;
use crate::rest_api::{into_bytes, ErrorResponse, Method, ProtocolVersionRangeGuard, Resource};

use crate::biome::credentials::store::{
    diesel::SplinterCredentialsStore, CredentialsStore, CredentialsStoreError,
};
use crate::biome::rest_api::resources::credentials::UsernamePassword;
use crate::biome::rest_api::BiomeRestConfig;
use crate::rest_api::sessions::{AccessTokenIssuer, ClaimsBuilder, TokenIssuer};

/// Defines a REST endpoint for login
///
/// The payload should be in the JSON format:
///   {
///       "username": <existing username of the user>
///       "hashed_password": <hash of the user's existing password>
///   }
pub fn make_login_route(
    credentials_store: Arc<SplinterCredentialsStore>,
    rest_config: Arc<BiomeRestConfig>,
    token_issuer: Arc<AccessTokenIssuer>,
) -> Resource {
    Resource::build("/biome/login")
        .add_request_guard(ProtocolVersionRangeGuard::new(
            protocol::BIOME_LOGIN_PROTOCOL_MIN,
            protocol::BIOME_PROTOCOL_VERSION,
        ))
        .add_method(Method::Post, move |_, payload| {
            let credentials_store = credentials_store.clone();
            let rest_config = rest_config.clone();
            let token_issuer = token_issuer.clone();
            Box::new(into_bytes(payload).and_then(move |bytes| {
                let username_password = match serde_json::from_slice::<UsernamePassword>(&bytes) {
                    Ok(val) => val,
                    Err(err) => {
                        debug!("Error parsing payload {}", err);
                        return HttpResponse::BadRequest()
                            .json(ErrorResponse::bad_request(&format!(
                                "Failed to parse payload: {}",
                                err
                            )))
                            .into_future();
                    }
                };

                let credentials =
                    match credentials_store.fetch_credential_by_username(&username_password.username) {
                        Ok(credentials) => credentials,
                        Err(err) => {
                            debug!("Failed to fetch credentials {}", err);
                            match err {
                                CredentialsStoreError::NotFoundError(_) => {
                                    return HttpResponse::BadRequest()
                                        .json(ErrorResponse::bad_request(&format!(
                                            "Username not found: {}",
                                            username_password.username
                                        )))
                                        .into_future();
                                }
                                _ => {
                                    return HttpResponse::InternalServerError()
                                        .json(ErrorResponse::internal_error())
                                        .into_future()
                                }
                            }
                        }
                    };

                match credentials.verify_password(&username_password.hashed_password) {
                    Ok(is_valid) => {
                        if is_valid {
                            let claim_builder: ClaimsBuilder = Default::default();
                            let claim = match claim_builder.with_user_id(&credentials.user_id)
                                .with_issuer(&rest_config.issuer())
                                .with_duration(rest_config.access_token_duration())
                                .build() {
                                    Ok(claim) => claim,
                                    Err(err) => {
                                        debug!("Failed to build claim {}", err);
                                        return HttpResponse::InternalServerError()
                                            .json(ErrorResponse::internal_error())
                                            .into_future()}
                                    };

                            let token = match token_issuer.issue_token_with_claims(claim) {
                                    Ok(token) => token,
                                    Err(err) => {
                                        debug!("Failed to issue token {}", err);
                                        return HttpResponse::InternalServerError()
                                            .json(ErrorResponse::internal_error())
                                            .into_future()}
                                    };
                            HttpResponse::Ok()
                                .json(json!({ "message": "Successful login", "user_id": credentials.user_id ,"token": token  }))
                                .into_future()
                        } else {
                            HttpResponse::BadRequest()
                                .json(ErrorResponse::bad_request("Invalid password"))
                                .into_future()
                        }
                    }
                    Err(err) => {
                        debug!("Failed to verify password {}", err);
                        HttpResponse::InternalServerError()
                            .json(ErrorResponse::internal_error())
                            .into_future()
                    }
                }
            }))
        })
}