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- // Copyright 2015 Google Inc. All rights reserved.
- //
- // 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 header
-
- import (
- "encoding/json"
- "net/http"
-
- "github.com/google/martian"
- "github.com/google/martian/parse"
- "github.com/google/martian/proxyutil"
- )
-
- func init() {
- parse.Register("header.Blacklist", blacklistModifierFromJSON)
- }
-
- type blacklistModifier struct {
- names []string
- }
-
- type blacklistModifierJSON struct {
- Names []string `json:"names"`
- Scope []parse.ModifierType `json:"scope"`
- }
-
- // ModifyRequest deletes all request headers based on the header name.
- func (m *blacklistModifier) ModifyRequest(req *http.Request) error {
- h := proxyutil.RequestHeader(req)
-
- for _, name := range m.names {
- h.Del(name)
- }
-
- return nil
- }
-
- // ModifyResponse deletes all response headers based on the header name.
- func (m *blacklistModifier) ModifyResponse(res *http.Response) error {
- h := proxyutil.ResponseHeader(res)
-
- for _, name := range m.names {
- h.Del(name)
- }
-
- return nil
- }
-
- // NewBlacklistModifier returns a modifier that will delete any header that
- // matches a name contained in the names parameter.
- func NewBlacklistModifier(names ...string) martian.RequestResponseModifier {
- return &blacklistModifier{
- names: names,
- }
- }
-
- // blacklistModifierFromJSON takes a JSON message as a byte slice and returns
- // a blacklistModifier and an error.
- //
- // Example JSON configuration message:
- // {
- // "names": ["X-Header", "Y-Header"],
- // "scope": ["request", "result"]
- // }
- func blacklistModifierFromJSON(b []byte) (*parse.Result, error) {
- msg := &blacklistModifierJSON{}
- if err := json.Unmarshal(b, msg); err != nil {
- return nil, err
- }
-
- return parse.NewResult(NewBlacklistModifier(msg.Names...), msg.Scope)
- }
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