client.go raw

   1  package internal
   2  
   3  import (
   4  	"bytes"
   5  	"context"
   6  	"encoding/json"
   7  	"fmt"
   8  	"io"
   9  	"net/http"
  10  	"net/url"
  11  	"time"
  12  
  13  	"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
  14  )
  15  
  16  // defaultBaseURL is the GleSYS API endpoint used by Present and CleanUp.
  17  const defaultBaseURL = "https://api.glesys.com/"
  18  
  19  type Client struct {
  20  	apiUser string
  21  	apiKey  string
  22  
  23  	baseURL    *url.URL
  24  	HTTPClient *http.Client
  25  }
  26  
  27  func NewClient(apiUser, apiKey string) *Client {
  28  	baseURL, _ := url.Parse(defaultBaseURL)
  29  
  30  	return &Client{
  31  		apiUser:    apiUser,
  32  		apiKey:     apiKey,
  33  		baseURL:    baseURL,
  34  		HTTPClient: &http.Client{Timeout: 5 * time.Second},
  35  	}
  36  }
  37  
  38  // AddTXTRecord adds a dns record to a domain.
  39  // https://github.com/GleSYS/API/wiki/API-Documentation#domainaddrecord
  40  func (c *Client) AddTXTRecord(ctx context.Context, domain, name, value string, ttl int) (int, error) {
  41  	endpoint := c.baseURL.JoinPath("domain", "addrecord")
  42  
  43  	request := addRecordRequest{
  44  		DomainName: domain,
  45  		Host:       name,
  46  		Type:       "TXT",
  47  		Data:       value,
  48  		TTL:        ttl,
  49  	}
  50  
  51  	req, err := newJSONRequest(ctx, http.MethodPost, endpoint, request)
  52  	if err != nil {
  53  		return 0, err
  54  	}
  55  
  56  	response, err := c.do(req)
  57  	if err != nil {
  58  		return 0, err
  59  	}
  60  
  61  	if response != nil && response.Response.Status.Code == http.StatusOK {
  62  		return response.Response.Record.RecordID, nil
  63  	}
  64  
  65  	return 0, err
  66  }
  67  
  68  // DeleteTXTRecord removes a dns record from a domain.
  69  // https://github.com/GleSYS/API/wiki/API-Documentation#domaindeleterecord
  70  func (c *Client) DeleteTXTRecord(ctx context.Context, recordID int) error {
  71  	endpoint := c.baseURL.JoinPath("domain", "deleterecord")
  72  
  73  	request := deleteRecordRequest{RecordID: recordID}
  74  
  75  	req, err := newJSONRequest(ctx, http.MethodPost, endpoint, request)
  76  	if err != nil {
  77  		return err
  78  	}
  79  
  80  	_, err = c.do(req)
  81  
  82  	return err
  83  }
  84  
  85  func (c *Client) do(req *http.Request) (*apiResponse, error) {
  86  	req.SetBasicAuth(c.apiUser, c.apiKey)
  87  
  88  	resp, err := c.HTTPClient.Do(req)
  89  	if err != nil {
  90  		return nil, errutils.NewHTTPDoError(req, err)
  91  	}
  92  
  93  	defer func() { _ = resp.Body.Close() }()
  94  
  95  	if resp.StatusCode/100 != 2 {
  96  		return nil, errutils.NewUnexpectedResponseStatusCodeError(req, resp)
  97  	}
  98  
  99  	raw, err := io.ReadAll(resp.Body)
 100  	if err != nil {
 101  		return nil, errutils.NewReadResponseError(req, resp.StatusCode, err)
 102  	}
 103  
 104  	var response apiResponse
 105  
 106  	err = json.Unmarshal(raw, &response)
 107  	if err != nil {
 108  		return nil, errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
 109  	}
 110  
 111  	return &response, nil
 112  }
 113  
 114  func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
 115  	buf := new(bytes.Buffer)
 116  
 117  	if payload != nil {
 118  		err := json.NewEncoder(buf).Encode(payload)
 119  		if err != nil {
 120  			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
 121  		}
 122  	}
 123  
 124  	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
 125  	if err != nil {
 126  		return nil, fmt.Errorf("unable to create request: %w", err)
 127  	}
 128  
 129  	req.Header.Set("Accept", "application/json")
 130  
 131  	if payload != nil {
 132  		req.Header.Set("Content-Type", "application/json")
 133  	}
 134  
 135  	return req, nil
 136  }
 137