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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 (
"net/http"
"github.com/google/martian/v3/proxyutil"
)
// Matcher is a conditonal evalutor of request or
// response headers to be used in structs that take conditions.
type Matcher struct {
name, value string
}
// NewMatcher builds a new header matcher.
func NewMatcher(name, value string) *Matcher {
return &Matcher{
name: name,
value: value,
}
}
// MatchRequest evaluates a request and returns whether or not
// the request contains a header that matches the provided name
// and value.
func (m *Matcher) MatchRequest(req *http.Request) bool {
h := proxyutil.RequestHeader(req)
vs, ok := h.All(m.name)
if !ok {
return false
}
for _, v := range vs {
if v == m.value {
return true
}
}
return false
}
// MatchResponse evaluates a response and returns whether or not
// the response contains a header that matches the provided name
// and value.
func (m *Matcher) MatchResponse(res *http.Response) bool {
h := proxyutil.ResponseHeader(res)
vs, ok := h.All(m.name)
if !ok {
return false
}
for _, v := range vs {
if v == m.value {
return true
}
}
return false
}
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