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client.go
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client.go
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// Package dmapi Client for DMAPI joker.com.
// https://joker.com/faq/category/39/22-dmapi.html
package dmapi
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"strings"
"sync"
"time"
"github.com/go-acme/lego/v4/challenge/dns01"
"github.com/go-acme/lego/v4/log"
"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
)
const defaultBaseURL = "https://dmapi.joker.com/request/"
// Response Joker DMAPI Response.
type Response struct {
Headers url.Values
Body string
StatusCode int
StatusText string
AuthSid string
}
type AuthInfo struct {
APIKey string
Username string
Password string
}
// Client a DMAPI Client.
type Client struct {
apiKey string
username string
password string
token *Token
muToken sync.Mutex
Debug bool
BaseURL string
HTTPClient *http.Client
}
// NewClient creates a new DMAPI Client.
func NewClient(authInfo AuthInfo) *Client {
return &Client{
apiKey: authInfo.APIKey,
username: authInfo.Username,
password: authInfo.Password,
BaseURL: defaultBaseURL,
HTTPClient: &http.Client{Timeout: 5 * time.Second},
}
}
// GetZone returns content of DNS zone for domain.
func (c *Client) GetZone(ctx context.Context, domain string) (*Response, error) {
if getSessionID(ctx) == "" {
return nil, errors.New("must be logged in to get zone")
}
return c.postRequest(ctx, "dns-zone-get", url.Values{"domain": {dns01.UnFqdn(domain)}})
}
// PutZone uploads DNS zone to Joker DMAPI.
func (c *Client) PutZone(ctx context.Context, domain, zone string) (*Response, error) {
if getSessionID(ctx) == "" {
return nil, errors.New("must be logged in to put zone")
}
return c.postRequest(ctx, "dns-zone-put", url.Values{"domain": {dns01.UnFqdn(domain)}, "zone": {strings.TrimSpace(zone)}})
}
// postRequest performs actual HTTP request.
func (c *Client) postRequest(ctx context.Context, cmd string, data url.Values) (*Response, error) {
endpoint, err := url.JoinPath(c.BaseURL, cmd)
if err != nil {
return nil, err
}
if getSessionID(ctx) != "" {
data.Set("auth-sid", getSessionID(ctx))
}
if c.Debug {
log.Infof("postRequest:\n\tURL: %q\n\tData: %v", endpoint, data)
}
req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, strings.NewReader(data.Encode()))
if err != nil {
return nil, fmt.Errorf("unable to create request: %w", err)
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
resp, err := c.HTTPClient.Do(req)
if err != nil {
return nil, errutils.NewHTTPDoError(req, err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return nil, errutils.NewUnexpectedResponseStatusCodeError(req, resp)
}
raw, err := io.ReadAll(resp.Body)
if err != nil {
return nil, errutils.NewReadResponseError(req, resp.StatusCode, err)
}
return parseResponse(string(raw)), nil
}
// parseResponse parses HTTP response body.
func parseResponse(message string) *Response {
r := &Response{Headers: url.Values{}, StatusCode: -1}
lines, body, _ := strings.Cut(message, "\n\n")
for _, line := range strings.Split(lines, "\n") {
if strings.TrimSpace(line) == "" {
continue
}
k, v, _ := strings.Cut(line, ":")
val := strings.TrimSpace(v)
r.Headers.Add(k, val)
switch k {
case "Status-Code":
i, err := strconv.Atoi(val)
if err == nil {
r.StatusCode = i
}
case "Status-Text":
r.StatusText = val
case "Auth-Sid":
r.AuthSid = val
}
}
r.Body = body
return r
}
// Temporary workaround, until it get fixed on API side.
func fixTxtLines(line string) string {
fields := strings.Fields(line)
if len(fields) < 6 || fields[1] != "TXT" {
return line
}
if fields[3][0] == '"' && fields[4] == `"` {
fields[3] = strings.TrimSpace(fields[3]) + `"`
fields = append(fields[:4], fields[5:]...)
}
return strings.Join(fields, " ")
}
// RemoveTxtEntryFromZone clean-ups all TXT records with given name.
func RemoveTxtEntryFromZone(zone, relative string) (string, bool) {
prefix := fmt.Sprintf("%s TXT 0 ", relative)
modified := false
var zoneEntries []string
for _, line := range strings.Split(zone, "\n") {
if strings.HasPrefix(line, prefix) {
modified = true
continue
}
zoneEntries = append(zoneEntries, line)
}
return strings.TrimSpace(strings.Join(zoneEntries, "\n")), modified
}
// AddTxtEntryToZone returns DNS zone with added TXT record.
func AddTxtEntryToZone(zone, relative, value string, ttl int) string {
var zoneEntries []string
for _, line := range strings.Split(zone, "\n") {
zoneEntries = append(zoneEntries, fixTxtLines(line))
}
newZoneEntry := fmt.Sprintf("%s TXT 0 %q %d", relative, value, ttl)
zoneEntries = append(zoneEntries, newZoneEntry)
return strings.TrimSpace(strings.Join(zoneEntries, "\n"))
}