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  	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
  15  )
  16  
  17  const defaultBaseURL = "https://api.gigahost.no/api/v0"
  18  
  19  const authorizationHeader = "Authorization"
  20  
  21  // Client the Gigahost.no API client.
  22  type Client struct {
  23  	BaseURL    *url.URL
  24  	HTTPClient *http.Client
  25  }
  26  
  27  // NewClient creates a new Client.
  28  func NewClient() *Client {
  29  	baseURL, _ := url.Parse(defaultBaseURL)
  30  
  31  	return &Client{
  32  		BaseURL:    baseURL,
  33  		HTTPClient: &http.Client{Timeout: 10 * time.Second},
  34  	}
  35  }
  36  
  37  // GetZones returns all zones.
  38  func (c *Client) GetZones(ctx context.Context) ([]Zone, error) {
  39  	endpoint := c.BaseURL.JoinPath("dns", "zones")
  40  
  41  	req, err := newJSONRequest(ctx, http.MethodGet, endpoint, nil)
  42  	if err != nil {
  43  		return nil, err
  44  	}
  45  
  46  	var result APIResponse[[]Zone]
  47  
  48  	err = c.do(ctx, req, &result)
  49  	if err != nil {
  50  		return nil, err
  51  	}
  52  
  53  	return result.Data, nil
  54  }
  55  
  56  // GetZoneRecords returns all records for a zone.
  57  func (c *Client) GetZoneRecords(ctx context.Context, zoneID string) ([]Record, error) {
  58  	endpoint := c.BaseURL.JoinPath("dns", "zones", zoneID, "records")
  59  
  60  	req, err := newJSONRequest(ctx, http.MethodGet, endpoint, nil)
  61  	if err != nil {
  62  		return nil, err
  63  	}
  64  
  65  	var result APIResponse[[]Record]
  66  
  67  	err = c.do(ctx, req, &result)
  68  	if err != nil {
  69  		return nil, err
  70  	}
  71  
  72  	return result.Data, nil
  73  }
  74  
  75  // CreateNewRecord creates a new record.
  76  func (c *Client) CreateNewRecord(ctx context.Context, zoneID string, record Record) error {
  77  	endpoint := c.BaseURL.JoinPath("dns", "zones", zoneID, "records")
  78  
  79  	req, err := newJSONRequest(ctx, http.MethodPost, endpoint, record)
  80  	if err != nil {
  81  		return err
  82  	}
  83  
  84  	return c.do(ctx, req, nil)
  85  }
  86  
  87  // DeleteRecord deletes a record.
  88  func (c *Client) DeleteRecord(ctx context.Context, zoneID, recordID, name, recordType string) error {
  89  	endpoint := c.BaseURL.JoinPath("dns", "zones", zoneID, "records", recordID)
  90  
  91  	query := endpoint.Query()
  92  	query.Set("name", name)
  93  	query.Set("type", recordType)
  94  	endpoint.RawQuery = query.Encode()
  95  
  96  	req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, nil)
  97  	if err != nil {
  98  		return err
  99  	}
 100  
 101  	return c.do(ctx, req, nil)
 102  }
 103  
 104  func (c *Client) do(ctx context.Context, req *http.Request, result any) error {
 105  	useragent.SetHeader(req.Header)
 106  
 107  	req.Header.Set(authorizationHeader, "Bearer "+getToken(ctx))
 108  
 109  	resp, err := c.HTTPClient.Do(req)
 110  	if err != nil {
 111  		return errutils.NewHTTPDoError(req, err)
 112  	}
 113  
 114  	defer func() { _ = resp.Body.Close() }()
 115  
 116  	if resp.StatusCode/100 != 2 {
 117  		return parseError(req, resp)
 118  	}
 119  
 120  	if result == nil {
 121  		return nil
 122  	}
 123  
 124  	raw, err := io.ReadAll(resp.Body)
 125  	if err != nil {
 126  		return errutils.NewReadResponseError(req, resp.StatusCode, err)
 127  	}
 128  
 129  	err = json.Unmarshal(raw, result)
 130  	if err != nil {
 131  		return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
 132  	}
 133  
 134  	return nil
 135  }
 136  
 137  func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
 138  	buf := new(bytes.Buffer)
 139  
 140  	if payload != nil {
 141  		err := json.NewEncoder(buf).Encode(payload)
 142  		if err != nil {
 143  			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
 144  		}
 145  	}
 146  
 147  	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
 148  	if err != nil {
 149  		return nil, fmt.Errorf("unable to create request: %w", err)
 150  	}
 151  
 152  	req.Header.Set("Accept", "application/json")
 153  
 154  	if payload != nil {
 155  		req.Header.Set("Content-Type", "application/json")
 156  	}
 157  
 158  	return req, nil
 159  }
 160  
 161  func parseError(req *http.Request, resp *http.Response) error {
 162  	raw, _ := io.ReadAll(resp.Body)
 163  
 164  	var errAPI APIError
 165  
 166  	err := json.Unmarshal(raw, &errAPI)
 167  	if err != nil {
 168  		return errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw)
 169  	}
 170  
 171  	return &errAPI
 172  }
 173