client.go raw

   1  package internal
   2  
   3  import (
   4  	"bytes"
   5  	"context"
   6  	"encoding/json"
   7  	"errors"
   8  	"fmt"
   9  	"io"
  10  	"net/http"
  11  	"net/url"
  12  	"time"
  13  
  14  	"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
  15  )
  16  
  17  const defaultBaseURL = "https://developers.hostinger.com"
  18  
  19  const authorizationHeader = "Authorization"
  20  
  21  // Client the Hostinger API client.
  22  type Client struct {
  23  	token string
  24  
  25  	BaseURL    *url.URL
  26  	HTTPClient *http.Client
  27  }
  28  
  29  // NewClient creates a new Client.
  30  func NewClient(token string) (*Client, error) {
  31  	if token == "" {
  32  		return nil, errors.New("credentials missing")
  33  	}
  34  
  35  	baseURL, _ := url.Parse(defaultBaseURL)
  36  
  37  	return &Client{
  38  		token:      token,
  39  		BaseURL:    baseURL,
  40  		HTTPClient: &http.Client{Timeout: 10 * time.Second},
  41  	}, nil
  42  }
  43  
  44  // GetDNSRecords retrieves DNS zone records for a specific domain.
  45  // https://developers.hostinger.com/#tag/dns-zone/get/api/dns/v1/zones/{domain}
  46  func (c *Client) GetDNSRecords(ctx context.Context, domain string) ([]RecordSet, error) {
  47  	endpoint := c.BaseURL.JoinPath("/api/dns/v1/zones/", domain)
  48  
  49  	req, err := newJSONRequest(ctx, http.MethodGet, endpoint, nil)
  50  	if err != nil {
  51  		return nil, err
  52  	}
  53  
  54  	var result []RecordSet
  55  
  56  	err = c.do(req, &result)
  57  	if err != nil {
  58  		return nil, err
  59  	}
  60  
  61  	return result, nil
  62  }
  63  
  64  // UpdateDNSRecords updates DNS records for the selected domain.
  65  // https://developers.hostinger.com/#tag/dns-zone/put/api/dns/v1/zones/{domain}
  66  func (c *Client) UpdateDNSRecords(ctx context.Context, domain string, zone ZoneRequest) error {
  67  	endpoint := c.BaseURL.JoinPath("/api/dns/v1/zones/", domain)
  68  
  69  	req, err := newJSONRequest(ctx, http.MethodPut, endpoint, zone)
  70  	if err != nil {
  71  		return err
  72  	}
  73  
  74  	return c.do(req, nil)
  75  }
  76  
  77  // DeleteDNSRecords deletes DNS records for the selected domain.
  78  // https://developers.hostinger.com/#tag/dns-zone/delete/api/dns/v1/zones/{domain}
  79  func (c *Client) DeleteDNSRecords(ctx context.Context, domain string, filters []Filter) error {
  80  	endpoint := c.BaseURL.JoinPath("/api/dns/v1/zones/", domain)
  81  
  82  	req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, Filters{Filters: filters})
  83  	if err != nil {
  84  		return err
  85  	}
  86  
  87  	return c.do(req, nil)
  88  }
  89  
  90  func (c *Client) do(req *http.Request, result any) error {
  91  	req.Header.Set(authorizationHeader, "Bearer "+c.token)
  92  
  93  	resp, err := c.HTTPClient.Do(req)
  94  	if err != nil {
  95  		return errutils.NewHTTPDoError(req, err)
  96  	}
  97  
  98  	defer func() { _ = resp.Body.Close() }()
  99  
 100  	if resp.StatusCode/100 != 2 {
 101  		return parseError(req, resp)
 102  	}
 103  
 104  	if result == nil {
 105  		return nil
 106  	}
 107  
 108  	raw, err := io.ReadAll(resp.Body)
 109  	if err != nil {
 110  		return errutils.NewReadResponseError(req, resp.StatusCode, err)
 111  	}
 112  
 113  	err = json.Unmarshal(raw, result)
 114  	if err != nil {
 115  		return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
 116  	}
 117  
 118  	return nil
 119  }
 120  
 121  func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
 122  	buf := new(bytes.Buffer)
 123  
 124  	if payload != nil {
 125  		err := json.NewEncoder(buf).Encode(payload)
 126  		if err != nil {
 127  			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
 128  		}
 129  	}
 130  
 131  	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
 132  	if err != nil {
 133  		return nil, fmt.Errorf("unable to create request: %w", err)
 134  	}
 135  
 136  	req.Header.Set("Accept", "application/json")
 137  
 138  	if payload != nil {
 139  		req.Header.Set("Content-Type", "application/json")
 140  	}
 141  
 142  	return req, nil
 143  }
 144  
 145  func parseError(req *http.Request, resp *http.Response) error {
 146  	raw, _ := io.ReadAll(resp.Body)
 147  
 148  	var errAPI APIError
 149  
 150  	err := json.Unmarshal(raw, &errAPI)
 151  	if err != nil {
 152  		return errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw)
 153  	}
 154  
 155  	return &errAPI
 156  }
 157