mirror of
https://github.com/go-acme/lego.git
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178 lines
3.6 KiB
Go
178 lines
3.6 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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"time"
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"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
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)
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const baseAPIURL = "https://api.servercow.de/dns/v1/domains"
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// Client the Servercow client.
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type Client struct {
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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 Servercow client.
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func NewClient(username, password string) *Client {
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baseURL, _ := url.Parse(baseAPIURL)
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return &Client{
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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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// GetRecords from API.
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func (c *Client) GetRecords(ctx context.Context, domain string) ([]Record, error) {
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endpoint := c.baseURL.JoinPath(domain)
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req, err := newJSONRequest(ctx, http.MethodGet, endpoint, nil)
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if err != nil {
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return nil, err
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}
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var records []Record
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err = c.do(req, &records)
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if err != nil {
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return nil, err
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}
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return records, nil
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}
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// CreateUpdateRecord creates or updates a record.
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func (c *Client) CreateUpdateRecord(ctx context.Context, domain string, data Record) (*Message, error) {
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endpoint := c.baseURL.JoinPath(domain)
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req, err := newJSONRequest(ctx, http.MethodPost, endpoint, data)
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if err != nil {
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return nil, err
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}
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var msg Message
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err = c.do(req, &msg)
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if err != nil {
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return nil, err
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}
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if msg.ErrorMsg != "" {
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return nil, msg
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}
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return &msg, nil
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}
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// DeleteRecord deletes a record.
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func (c *Client) DeleteRecord(ctx context.Context, domain string, data Record) (*Message, error) {
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endpoint := c.baseURL.JoinPath(domain)
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req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, data)
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if err != nil {
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return nil, err
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}
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var msg Message
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err = c.do(req, &msg)
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if err != nil {
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return nil, err
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}
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if msg.ErrorMsg != "" {
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return nil, msg
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}
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return &msg, nil
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}
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func (c *Client) do(req *http.Request, result any) error {
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req.Header.Set("X-Auth-Username", c.username)
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req.Header.Set("X-Auth-Password", c.password)
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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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// Note the API always return 200 even if the authentication failed.
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if resp.StatusCode/100 != 2 {
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return errutils.NewUnexpectedResponseStatusCodeError(req, resp)
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}
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if result == nil {
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return nil
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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 errutils.NewReadResponseError(req, resp.StatusCode, err)
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}
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err = unmarshal(raw, result)
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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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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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// Content-Type should be added even if there is no request body.
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req.Header.Set("Content-Type", "application/json")
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return req, nil
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}
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func unmarshal(raw []byte, v any) error {
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err := json.Unmarshal(raw, v)
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if err == nil {
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return nil
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}
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var utErr *json.UnmarshalTypeError
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if !errors.As(err, &utErr) {
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return fmt.Errorf("unmarshaling %T error: %w: %s", v, err, string(raw))
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}
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var apiErr Message
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errU := json.Unmarshal(raw, &apiErr)
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if errU != nil {
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return fmt.Errorf("unmarshaling %T error: %w: %s", v, err, string(raw))
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}
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return apiErr
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}
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