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client.go
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client.go
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package internal
import (
"bytes"
"encoding/xml"
"errors"
"fmt"
"io"
"net/http"
"strings"
"time"
)
// DefaultBaseURL is url to the XML-RPC api.
const DefaultBaseURL = "https://api.loopia.se/RPCSERV"
// Client the Loopia client.
type Client struct {
APIUser string
APIPassword string
BaseURL string
HTTPClient *http.Client
}
// NewClient creates a new Loopia Client.
func NewClient(apiUser, apiPassword string) *Client {
return &Client{
APIUser: apiUser,
APIPassword: apiPassword,
BaseURL: DefaultBaseURL,
HTTPClient: &http.Client{Timeout: 10 * time.Second},
}
}
// AddTXTRecord adds a TXT record.
func (c *Client) AddTXTRecord(domain string, subdomain string, ttl int, value string) error {
call := &methodCall{
MethodName: "addZoneRecord",
Params: []param{
paramString{Value: c.APIUser},
paramString{Value: c.APIPassword},
paramString{Value: domain},
paramString{Value: subdomain},
paramStruct{
StructMembers: []structMember{
structMemberString{Name: "type", Value: "TXT"},
structMemberInt{Name: "ttl", Value: ttl},
structMemberInt{Name: "priority", Value: 0},
structMemberString{Name: "rdata", Value: value},
structMemberInt{Name: "record_id", Value: 0},
},
},
},
}
resp := &responseString{}
err := c.rpcCall(call, resp)
if err != nil {
return err
}
return checkResponse(resp.Value)
}
// RemoveTXTRecord removes a TXT record.
func (c *Client) RemoveTXTRecord(domain string, subdomain string, recordID int) error {
call := &methodCall{
MethodName: "removeZoneRecord",
Params: []param{
paramString{Value: c.APIUser},
paramString{Value: c.APIPassword},
paramString{Value: domain},
paramString{Value: subdomain},
paramInt{Value: recordID},
},
}
resp := &responseString{}
err := c.rpcCall(call, resp)
if err != nil {
return err
}
return checkResponse(resp.Value)
}
// GetTXTRecords gets TXT records.
func (c *Client) GetTXTRecords(domain string, subdomain string) ([]RecordObj, error) {
call := &methodCall{
MethodName: "getZoneRecords",
Params: []param{
paramString{Value: c.APIUser},
paramString{Value: c.APIPassword},
paramString{Value: domain},
paramString{Value: subdomain},
},
}
resp := &recordObjectsResponse{}
err := c.rpcCall(call, resp)
return resp.Params, err
}
// RemoveSubdomain remove a sub-domain.
func (c *Client) RemoveSubdomain(domain, subdomain string) error {
call := &methodCall{
MethodName: "removeSubdomain",
Params: []param{
paramString{Value: c.APIUser},
paramString{Value: c.APIPassword},
paramString{Value: domain},
paramString{Value: subdomain},
},
}
resp := &responseString{}
err := c.rpcCall(call, resp)
if err != nil {
return err
}
return checkResponse(resp.Value)
}
// rpcCall makes an XML-RPC call to Loopia's RPC endpoint
// by marshaling the data given in the call argument to XML and sending that via HTTP Post to Loopia.
// The response is then unmarshalled into the resp argument.
func (c *Client) rpcCall(call *methodCall, resp response) error {
body, err := xml.MarshalIndent(call, "", " ")
if err != nil {
return fmt.Errorf("error during unmarshalling the request body: %w", err)
}
body = append([]byte(`<?xml version="1.0"?>`+"\n"), body...)
respBody, err := c.httpPost(c.BaseURL, "text/xml", bytes.NewReader(body))
if err != nil {
return err
}
err = xml.Unmarshal(respBody, resp)
if err != nil {
return fmt.Errorf("error during unmarshalling the response body: %w", err)
}
if resp.faultCode() != 0 {
return rpcError{
faultCode: resp.faultCode(),
faultString: strings.TrimSpace(resp.faultString()),
}
}
return nil
}
func (c *Client) httpPost(url string, bodyType string, body io.Reader) ([]byte, error) {
resp, err := c.HTTPClient.Post(url, bodyType, body)
if err != nil {
return nil, fmt.Errorf("HTTP Post Error: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("HTTP Post Error: %d", resp.StatusCode)
}
b, err := io.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("HTTP Post Error: %w", err)
}
return b, nil
}
func checkResponse(value string) error {
switch v := strings.TrimSpace(value); v {
case "OK":
return nil
case "AUTH_ERROR":
return errors.New("authentication error")
default:
return fmt.Errorf("unknown error: %q", v)
}
}