115 lines
2.6 KiB
Go
115 lines
2.6 KiB
Go
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package internal
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import (
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"context"
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"encoding/json"
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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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// DefaultBaseURL the default API endpoint.
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const DefaultBaseURL = "https://api.dreamhost.com"
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const (
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cmdAddRecord = "dns-add_record"
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cmdRemoveRecord = "dns-remove_record"
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)
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// Client the Dreamhost API client.
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type Client struct {
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apiKey string
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BaseURL string
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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(apiKey string) *Client {
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return &Client{
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apiKey: apiKey,
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BaseURL: DefaultBaseURL,
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HTTPClient: &http.Client{Timeout: 5 * time.Second},
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}
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}
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// AddRecord adds a TXT record.
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func (c *Client) AddRecord(ctx context.Context, domain, value string) error {
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query, err := c.buildEndpoint(cmdAddRecord, domain, value)
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if err != nil {
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return err
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}
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return c.updateTxtRecord(ctx, query)
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}
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// RemoveRecord removes a TXT record.
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func (c *Client) RemoveRecord(ctx context.Context, domain, value string) error {
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query, err := c.buildEndpoint(cmdRemoveRecord, domain, value)
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if err != nil {
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return err
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}
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return c.updateTxtRecord(ctx, query)
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}
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// action is either cmdAddRecord or cmdRemoveRecord.
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func (c *Client) buildEndpoint(action, domain, txt string) (*url.URL, error) {
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endpoint, err := url.Parse(c.BaseURL)
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if err != nil {
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return nil, err
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}
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query := endpoint.Query()
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query.Set("key", c.apiKey)
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query.Set("cmd", action)
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query.Set("format", "json")
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query.Set("record", domain)
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query.Set("type", "TXT")
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query.Set("value", txt)
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query.Set("comment", url.QueryEscape("Managed By lego"))
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endpoint.RawQuery = query.Encode()
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return endpoint, nil
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}
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// updateTxtRecord will either add or remove a TXT record.
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func (c *Client) updateTxtRecord(ctx context.Context, endpoint *url.URL) error {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), http.NoBody)
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if err != nil {
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return fmt.Errorf("unable to create request: %w", 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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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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var response apiResponse
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err = json.Unmarshal(raw, &response)
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if err != nil {
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return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
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}
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if response.Result == "error" {
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return fmt.Errorf("add TXT record failed: %s", response.Data)
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}
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return nil
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}
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