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 the default API endpoint.
  17  const DefaultBaseURL = "https://rest.easydns.net"
  18  
  19  // Client the EasyDNS API client.
  20  type Client struct {
  21  	token string
  22  	key   string
  23  
  24  	BaseURL    *url.URL
  25  	HTTPClient *http.Client
  26  }
  27  
  28  // NewClient Creates a new Client.
  29  func NewClient(token, key string) *Client {
  30  	baseURL, _ := url.Parse(DefaultBaseURL)
  31  
  32  	return &Client{
  33  		token:      token,
  34  		key:        key,
  35  		BaseURL:    baseURL,
  36  		HTTPClient: &http.Client{Timeout: 5 * time.Second},
  37  	}
  38  }
  39  
  40  func (c *Client) ListZones(ctx context.Context, domain string) ([]ZoneRecord, error) {
  41  	endpoint := c.BaseURL.JoinPath("zones", "records", "all", domain)
  42  
  43  	req, err := newJSONRequest(ctx, http.MethodGet, endpoint, nil)
  44  	if err != nil {
  45  		return nil, err
  46  	}
  47  
  48  	response := &apiResponse[[]ZoneRecord]{}
  49  
  50  	err = c.do(req, response)
  51  	if err != nil {
  52  		return nil, err
  53  	}
  54  
  55  	if response.Error != nil {
  56  		return nil, response.Error
  57  	}
  58  
  59  	return response.Data, nil
  60  }
  61  
  62  func (c *Client) AddRecord(ctx context.Context, domain string, record ZoneRecord) (string, error) {
  63  	endpoint := c.BaseURL.JoinPath("zones", "records", "add", domain, "TXT")
  64  
  65  	req, err := newJSONRequest(ctx, http.MethodPut, endpoint, record)
  66  	if err != nil {
  67  		return "", err
  68  	}
  69  
  70  	response := &apiResponse[*ZoneRecord]{}
  71  
  72  	err = c.do(req, response)
  73  	if err != nil {
  74  		return "", err
  75  	}
  76  
  77  	if response.Error != nil {
  78  		return "", response.Error
  79  	}
  80  
  81  	recordID := response.Data.ID
  82  
  83  	return recordID, nil
  84  }
  85  
  86  func (c *Client) DeleteRecord(ctx context.Context, domain, recordID string) error {
  87  	endpoint := c.BaseURL.JoinPath("zones", "records", domain, recordID)
  88  
  89  	req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, nil)
  90  	if err != nil {
  91  		return err
  92  	}
  93  
  94  	err = c.do(req, nil)
  95  
  96  	return err
  97  }
  98  
  99  func (c *Client) do(req *http.Request, result any) error {
 100  	req.SetBasicAuth(c.token, c.key)
 101  
 102  	resp, err := c.HTTPClient.Do(req)
 103  	if err != nil {
 104  		return errutils.NewHTTPDoError(req, err)
 105  	}
 106  
 107  	defer func() { _ = resp.Body.Close() }()
 108  
 109  	if resp.StatusCode/100 != 2 {
 110  		return errutils.NewUnexpectedResponseStatusCodeError(req, resp)
 111  	}
 112  
 113  	if result == nil {
 114  		return nil
 115  	}
 116  
 117  	raw, err := io.ReadAll(resp.Body)
 118  	if err != nil {
 119  		return errutils.NewReadResponseError(req, resp.StatusCode, err)
 120  	}
 121  
 122  	err = json.Unmarshal(raw, result)
 123  	if err != nil {
 124  		return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
 125  	}
 126  
 127  	return nil
 128  }
 129  
 130  func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
 131  	buf := new(bytes.Buffer)
 132  
 133  	if payload != nil {
 134  		err := json.NewEncoder(buf).Encode(payload)
 135  		if err != nil {
 136  			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
 137  		}
 138  	}
 139  
 140  	query := endpoint.Query()
 141  	query.Set("format", "json")
 142  	endpoint.RawQuery = query.Encode()
 143  
 144  	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
 145  	if err != nil {
 146  		return nil, fmt.Errorf("unable to create request: %w", err)
 147  	}
 148  
 149  	req.Header.Set("Accept", "application/json")
 150  
 151  	if payload != nil {
 152  		req.Header.Set("Content-Type", "application/json")
 153  	}
 154  
 155  	return req, nil
 156  }
 157