github.com/google/martian/v3@v3.3.3/cookie/cookie_matcher.go (about)

     1  // Copyright 2017 Google Inc. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cookie
    16  
    17  import (
    18  	"net/http"
    19  
    20  	"github.com/google/martian/v3/log"
    21  )
    22  
    23  // Matcher is a conditonal evalutor of request or
    24  // response cookies to be used in structs that take conditions.
    25  type Matcher struct {
    26  	cookie *http.Cookie
    27  }
    28  
    29  // NewMatcher builds a cookie matcher.
    30  func NewMatcher(cookie *http.Cookie) *Matcher {
    31  	return &Matcher{
    32  		cookie: cookie,
    33  	}
    34  }
    35  
    36  // MatchRequest evaluates a request and returns whether or not
    37  // the request contains a cookie that matches the provided name, path
    38  // and value.
    39  func (m *Matcher) MatchRequest(req *http.Request) bool {
    40  	for _, c := range req.Cookies() {
    41  		if m.match(c) {
    42  			log.Debugf("cookie.MatchRequest: %s, matched: cookie: %s", req.URL, c)
    43  			return true
    44  		}
    45  	}
    46  
    47  	return false
    48  }
    49  
    50  // MatchResponse evaluates a response and returns whether or not the response
    51  // contains a cookie that matches the provided name and value.
    52  func (m *Matcher) MatchResponse(res *http.Response) bool {
    53  	for _, c := range res.Cookies() {
    54  		if m.match(c) {
    55  			log.Debugf("cookie.MatchResponse: %s, matched: cookie: %s", res.Request.URL, c)
    56  			return true
    57  		}
    58  	}
    59  
    60  	return false
    61  }
    62  
    63  func (m *Matcher) match(cs *http.Cookie) bool {
    64  	switch {
    65  	case m.cookie.Name != cs.Name:
    66  		return false
    67  	case m.cookie.Value != "" && m.cookie.Value != cs.Value:
    68  		return false
    69  	}
    70  
    71  	return true
    72  }