mirror of
https://github.com/dutchcoders/transfer.sh.git
synced 2020-11-18 19:53:40 -08:00
79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
// Copyright 2015 Google Inc. All rights reserved.
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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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package header
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import (
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"encoding/json"
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"net/http"
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"github.com/google/martian"
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"github.com/google/martian/parse"
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"github.com/google/martian/proxyutil"
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)
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func init() {
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parse.Register("header.Modifier", modifierFromJSON)
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}
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type modifier struct {
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name, value string
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}
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type modifierJSON struct {
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Name string `json:"name"`
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Value string `json:"value"`
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Scope []parse.ModifierType `json:"scope"`
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}
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// ModifyRequest sets the header at name with value on the request.
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func (m *modifier) ModifyRequest(req *http.Request) error {
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return proxyutil.RequestHeader(req).Set(m.name, m.value)
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}
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// ModifyResponse sets the header at name with value on the response.
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func (m *modifier) ModifyResponse(res *http.Response) error {
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return proxyutil.ResponseHeader(res).Set(m.name, m.value)
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}
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// NewModifier returns a modifier that will set the header at name with
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// the given value for both requests and responses. If the header name already
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// exists all values will be overwritten.
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func NewModifier(name, value string) martian.RequestResponseModifier {
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return &modifier{
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name: http.CanonicalHeaderKey(name),
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value: value,
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}
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}
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// modifierFromJSON takes a JSON message as a byte slice and returns
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// a headerModifier and an error.
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//
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// Example JSON configuration message:
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// {
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// "scope": ["request", "result"],
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// "name": "X-Martian",
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// "value": "true"
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// }
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func modifierFromJSON(b []byte) (*parse.Result, error) {
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msg := &modifierJSON{}
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if err := json.Unmarshal(b, msg); err != nil {
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return nil, err
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}
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modifier := NewModifier(msg.Name, msg.Value)
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return parse.NewResult(modifier, msg.Scope)
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}
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