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client.go
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client.go
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package internal
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"time"
"github.com/go-acme/lego/v4/challenge/dns01"
"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
)
const defaultBaseURL = "https://www.do.de/api"
// Client the do.de API client.
type Client struct {
token string
baseURL *url.URL
HTTPClient *http.Client
}
// NewClient Creates a new Client.
func NewClient(token string) *Client {
baseURL, _ := url.Parse(defaultBaseURL)
return &Client{
token: token,
baseURL: baseURL,
HTTPClient: &http.Client{Timeout: 5 * time.Second},
}
}
// UpdateTxtRecord Update the domains TXT record
// To update the TXT record we just need to make one simple get request.
func (c Client) UpdateTxtRecord(ctx context.Context, fqdn, txt string, clear bool) error {
endpoint := c.baseURL.JoinPath("letsencrypt")
query := endpoint.Query()
query.Set("token", c.token)
query.Set("domain", dns01.UnFqdn(fqdn))
// api call differs per set/delete
if clear {
query.Set("action", "delete")
} else {
query.Set("value", txt)
}
endpoint.RawQuery = query.Encode()
req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), http.NoBody)
if err != nil {
return fmt.Errorf("unable to create request: %w", err)
}
resp, err := c.HTTPClient.Do(req)
if err != nil {
return errutils.NewHTTPDoError(req, err)
}
defer func() { _ = resp.Body.Close() }()
raw, err := io.ReadAll(resp.Body)
if err != nil {
return errutils.NewReadResponseError(req, resp.StatusCode, err)
}
var response apiResponse
err = json.Unmarshal(raw, &response)
if err != nil {
return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
}
body := string(raw)
if !response.Success {
return fmt.Errorf("request to change TXT record for do.de returned the following error result (%s); used url [%s]", body, endpoint)
}
return nil
}