mirror of
https://github.com/go-acme/lego.git
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179 lines
4.1 KiB
Go
179 lines
4.1 KiB
Go
package internal
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"strconv"
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"time"
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"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
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)
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const defaultBaseURL = "https://api.dynect.net/REST"
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// Client the Dyn API client.
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type Client struct {
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customerName string
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username string
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password string
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baseURL *url.URL
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HTTPClient *http.Client
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}
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// NewClient Creates a new Client.
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func NewClient(customerName string, username string, password string) *Client {
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baseURL, _ := url.Parse(defaultBaseURL)
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return &Client{
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customerName: customerName,
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username: username,
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password: password,
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baseURL: baseURL,
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HTTPClient: &http.Client{Timeout: 5 * time.Second},
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}
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}
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// Publish updating Zone settings.
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// https://help.dyn.com/update-zone-api/
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func (c *Client) Publish(ctx context.Context, zone, notes string) error {
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endpoint := c.baseURL.JoinPath("Zone", zone)
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payload := &publish{Publish: true, Notes: notes}
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req, err := newJSONRequest(ctx, http.MethodPut, endpoint, payload)
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if err != nil {
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return err
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}
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_, err = c.do(req)
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if err != nil {
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return err
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}
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return nil
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}
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// AddTXTRecord creating TXT Records.
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// https://help.dyn.com/create-txt-record-api/
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func (c *Client) AddTXTRecord(ctx context.Context, authZone, fqdn, value string, ttl int) error {
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endpoint := c.baseURL.JoinPath("TXTRecord", authZone, fqdn)
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payload := map[string]any{
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"rdata": map[string]string{
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"txtdata": value,
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},
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"ttl": strconv.Itoa(ttl),
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}
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req, err := newJSONRequest(ctx, http.MethodPost, endpoint, payload)
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if err != nil {
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return err
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}
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_, err = c.do(req)
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if err != nil {
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return err
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}
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return nil
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}
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// RemoveTXTRecord deleting one or all existing TXT Records.
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// https://help.dyn.com/delete-txt-records-api/
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func (c *Client) RemoveTXTRecord(ctx context.Context, authZone, fqdn string) error {
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endpoint := c.baseURL.JoinPath("TXTRecord", authZone, fqdn)
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req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, nil)
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if err != nil {
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return err
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}
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resp, err := c.HTTPClient.Do(req)
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if err != nil {
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return errutils.NewHTTPDoError(req, err)
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode != http.StatusOK {
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return errutils.NewUnexpectedResponseStatusCodeError(req, resp)
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}
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return nil
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}
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func (c *Client) do(req *http.Request) (*APIResponse, error) {
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resp, err := c.HTTPClient.Do(req)
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if err != nil {
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return nil, errutils.NewHTTPDoError(req, err)
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode >= http.StatusInternalServerError {
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return nil, errutils.NewUnexpectedResponseStatusCodeError(req, resp)
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}
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raw, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, errutils.NewReadResponseError(req, resp.StatusCode, err)
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}
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var response APIResponse
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err = json.Unmarshal(raw, &response)
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if err != nil {
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return nil, errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
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}
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if resp.StatusCode >= http.StatusBadRequest {
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return nil, fmt.Errorf("%s: %w", response.Messages, errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw))
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}
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if resp.StatusCode == http.StatusTemporaryRedirect {
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// TODO add support for HTTP 307 response and long running jobs
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return nil, errors.New("API request returned HTTP 307. This is currently unsupported")
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}
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if response.Status == "failure" {
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return nil, fmt.Errorf("%s: %w", response.Messages, errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw))
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}
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return &response, nil
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}
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func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
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buf := new(bytes.Buffer)
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if payload != nil {
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err := json.NewEncoder(buf).Encode(payload)
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if err != nil {
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return nil, fmt.Errorf("failed to create request JSON body: %w", err)
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}
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}
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req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
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if err != nil {
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return nil, fmt.Errorf("unable to create request: %w", err)
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}
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req.Header.Set("Accept", "application/json")
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if payload != nil {
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req.Header.Set("Content-Type", "application/json")
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}
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tok := getToken(req.Context())
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if tok != "" {
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req.Header.Set(authTokenHeader, tok)
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}
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return req, nil
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}
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