agola/internal/services/gateway/handlers/maxbyte.go

39 lines
1.0 KiB
Go

// Copyright 2019 Sorint.lab
//
// 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.
package handlers
import "net/http"
type maxBytesHandler struct {
h http.Handler
n int64
}
func NewMaxBytesHandler(h http.Handler, n int64) *maxBytesHandler {
return &maxBytesHandler{
h: h,
n: n,
}
}
func (h *maxBytesHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.ContentLength > h.n {
http.Error(w, "request too large", http.StatusExpectationFailed)
return
}
r.Body = http.MaxBytesReader(w, r.Body, h.n)
h.h.ServeHTTP(w, r)
}