github.com/greenpau/go-authcrunch@v1.1.4/pkg/util/browser.go (about)

     1  // Copyright 2022 Paul Greenberg greenpau@outlook.com
     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 util
    16  
    17  import (
    18  	"io/ioutil"
    19  	"net"
    20  	"net/http"
    21  	"net/http/cookiejar"
    22  	"time"
    23  )
    24  
    25  // Browser represents a browser instance.
    26  type Browser struct {
    27  	client *http.Client
    28  }
    29  
    30  // NewBrowser returns an instance of a browser.
    31  func NewBrowser() (*Browser, error) {
    32  	cj, err := cookiejar.New(nil)
    33  	if err != nil {
    34  		return nil, err
    35  	}
    36  	tr := &http.Transport{
    37  		Proxy: http.ProxyFromEnvironment,
    38  		Dial: (&net.Dialer{
    39  			Timeout: 5 * time.Second,
    40  		}).Dial,
    41  		TLSHandshakeTimeout: 5 * time.Second,
    42  	}
    43  	b := &Browser{
    44  		client: &http.Client{
    45  			Jar:       cj,
    46  			Timeout:   time.Second * 10,
    47  			Transport: tr,
    48  			CheckRedirect: func(req *http.Request, via []*http.Request) error {
    49  				return http.ErrUseLastResponse
    50  			},
    51  		},
    52  	}
    53  	return b, nil
    54  }
    55  
    56  // Do makes HTTP requests and parses responses.
    57  func (b *Browser) Do(req *http.Request) (string, *http.Response, error) {
    58  	req.Header.Set("User-Agent", "authdbctl/1.0.16")
    59  	resp, err := b.client.Do(req)
    60  	if err != nil {
    61  		return "", nil, err
    62  	}
    63  
    64  	respBody, err := ioutil.ReadAll(resp.Body)
    65  	resp.Body.Close()
    66  	if err != nil {
    67  		return "", nil, err
    68  	}
    69  
    70  	return string(respBody), resp, nil
    71  }