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https://github.com/mimblewimble/grin.git
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8ee8043fd9
Fixes #1641. The size of the token can be leaked, even if we pad or cut user's input we can't make it indistinguishable form the normal case.
64 lines
1.8 KiB
Rust
64 lines
1.8 KiB
Rust
// Copyright 2018 The Grin Developers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use futures::future::ok;
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use hyper::header::{HeaderValue, AUTHORIZATION, WWW_AUTHENTICATE};
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use hyper::{Body, Request, Response, StatusCode};
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use ring::constant_time::verify_slices_are_equal;
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use router::{Handler, HandlerObj, ResponseFuture};
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// Basic Authentication Middleware
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pub struct BasicAuthMiddleware {
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api_basic_auth: String,
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basic_realm: String,
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}
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impl BasicAuthMiddleware {
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pub fn new(api_basic_auth: String, basic_realm: String) -> BasicAuthMiddleware {
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BasicAuthMiddleware {
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api_basic_auth,
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basic_realm,
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}
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}
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}
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impl Handler for BasicAuthMiddleware {
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fn call(
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&self,
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req: Request<Body>,
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mut handlers: Box<Iterator<Item = HandlerObj>>,
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) -> ResponseFuture {
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if req.headers().contains_key(AUTHORIZATION) && verify_slices_are_equal(
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req.headers()[AUTHORIZATION].as_bytes(),
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&self.api_basic_auth.as_bytes(),
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).is_ok()
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{
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handlers.next().unwrap().call(req, handlers)
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} else {
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// Unauthorized 401
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unauthorized_response(&self.basic_realm)
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}
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}
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}
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fn unauthorized_response(basic_realm: &str) -> ResponseFuture {
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let response = Response::builder()
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.status(StatusCode::UNAUTHORIZED)
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.header(
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WWW_AUTHENTICATE,
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HeaderValue::from_str(basic_realm).unwrap(),
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).body(Body::empty())
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.unwrap();
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Box::new(ok(response))
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}
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