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url_matcher.go
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url_matcher.go
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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 martianurl
import (
"net/http"
"net/url"
"github.com/google/martian/v3/log"
)
// Matcher is a conditional evaluator of request urls to be used in
// filters that take conditionals.
type Matcher struct {
url *url.URL
}
// NewMatcher builds a new url matcher.
func NewMatcher(url *url.URL) *Matcher {
return &Matcher{
url: url,
}
}
// MatchRequest retuns true if all non-empty URL segments in m.url match the
// request URL.
func (m *Matcher) MatchRequest(req *http.Request) bool {
matched := m.matches(req.URL)
if matched {
log.Debugf("martianurl.Matcher.MatchRequest: matched: %s", req.URL)
}
return matched
}
// MatchResponse retuns true if all non-empty URL segments in m.url match the
// request URL.
func (m *Matcher) MatchResponse(res *http.Response) bool {
matched := m.matches(res.Request.URL)
if matched {
log.Debugf("martianurl.Matcher.MatchResponse: matched: %s", res.Request.URL)
}
return matched
}
// matches forces all non-empty URL segments to match or it returns false.
func (m *Matcher) matches(u *url.URL) bool {
switch {
case m.url.Scheme != "" && m.url.Scheme != u.Scheme:
return false
case m.url.Host != "" && !MatchHost(u.Host, m.url.Host):
return false
case m.url.Path != "" && m.url.Path != u.Path:
return false
case m.url.RawQuery != "" && m.url.RawQuery != u.RawQuery:
return false
case m.url.Fragment != "" && m.url.Fragment != u.Fragment:
return false
}
return true
}