1
0
mirror of https://github.com/go-acme/lego.git synced 2024-12-23 09:15:11 +02:00
lego/providers/dns/technitium/internal/client.go
2024-11-21 13:23:18 +01:00

159 lines
3.5 KiB
Go

package internal
import (
"context"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strings"
"time"
"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
querystring "github.com/google/go-querystring/query"
)
const statusSuccess = "ok"
// Client the Technitium API client.
type Client struct {
apiToken string
baseURL *url.URL
HTTPClient *http.Client
}
// NewClient creates a new Client.
func NewClient(baseURL, apiToken string) (*Client, error) {
if apiToken == "" {
return nil, errors.New("missing credentials")
}
if baseURL == "" {
return nil, errors.New("missing server URL")
}
apiEndpoint, err := url.Parse(baseURL)
if err != nil {
return nil, err
}
return &Client{
apiToken: apiToken,
baseURL: apiEndpoint,
HTTPClient: &http.Client{Timeout: 10 * time.Second},
}, nil
}
// AddRecord adds a resource record for an authoritative zone.
// https://github.com/TechnitiumSoftware/DnsServer/blob/master/APIDOCS.md#add-record
func (c *Client) AddRecord(ctx context.Context, record Record) (*Record, error) {
endpoint := c.baseURL.JoinPath("api", "zones", "records", "add")
req, err := c.newFormRequest(ctx, endpoint, record)
if err != nil {
return nil, fmt.Errorf("create request: %w", err)
}
result := &APIResponse[AddRecordResponse]{}
err = c.do(req, result)
if err != nil {
return nil, err
}
if result.Status != statusSuccess {
return nil, result
}
return result.Response.AddedRecord, nil
}
// DeleteRecord deletes a record from an authoritative zone.
// https://github.com/TechnitiumSoftware/DnsServer/blob/master/APIDOCS.md#delete-record
func (c *Client) DeleteRecord(ctx context.Context, record Record) error {
endpoint := c.baseURL.JoinPath("api", "zones", "records", "delete")
req, err := c.newFormRequest(ctx, endpoint, record)
if err != nil {
return fmt.Errorf("create request: %w", err)
}
result := &APIResponse[any]{}
err = c.do(req, result)
if err != nil {
return err
}
if result.Status != statusSuccess {
return result
}
return nil
}
func (c *Client) do(req *http.Request, result any) error {
resp, err := c.HTTPClient.Do(req)
if err != nil {
return errutils.NewHTTPDoError(req, err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode >= http.StatusBadRequest {
return parseError(req, resp)
}
raw, err := io.ReadAll(resp.Body)
if err != nil {
return errutils.NewReadResponseError(req, resp.StatusCode, err)
}
err = json.Unmarshal(raw, result)
if err != nil {
return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
}
return nil
}
func (c *Client) newFormRequest(ctx context.Context, endpoint *url.URL, payload any) (*http.Request, error) {
values := url.Values{}
if payload != nil {
var err error
values, err = querystring.Values(payload)
if err != nil {
return nil, fmt.Errorf("failed to create request body: %w", err)
}
}
values.Set("token", c.apiToken)
req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint.String(), strings.NewReader(values.Encode()))
if err != nil {
return nil, fmt.Errorf("unable to create request: %w", err)
}
if payload != nil {
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
return req, nil
}
func parseError(req *http.Request, resp *http.Response) error {
raw, _ := io.ReadAll(resp.Body)
var errAPI APIResponse[any]
err := json.Unmarshal(raw, &errAPI)
if err != nil {
return errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw)
}
return &errAPI
}