casdoor/captcha/geetest.go
2022-08-09 16:50:49 +08:00

82 lines
2.2 KiB
Go

// Copyright 2022 The Casdoor Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package captcha
import (
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"time"
"github.com/casdoor/casdoor/util"
)
const GEETESTCaptchaVerifyUrl = "http://gcaptcha4.geetest.com/validate"
type GEETESTCaptchaProvider struct{}
func NewGEETESTCaptchaProvider() *GEETESTCaptchaProvider {
captcha := &GEETESTCaptchaProvider{}
return captcha
}
func (captcha *GEETESTCaptchaProvider) VerifyCaptcha(token, clientSecret string) (bool, error) {
pathData, err := url.ParseQuery(token)
if err != nil {
return false, err
}
signToken := util.GetHmacSha256(clientSecret, pathData["lot_number"][0])
formData := make(url.Values)
formData["lot_number"] = []string{pathData["lot_number"][0]}
formData["captcha_output"] = []string{pathData["captcha_output"][0]}
formData["pass_token"] = []string{pathData["pass_token"][0]}
formData["gen_time"] = []string{pathData["gen_time"][0]}
formData["sign_token"] = []string{signToken}
captchaId := pathData["captcha_id"][0]
cli := http.Client{Timeout: time.Second * 5}
resp, err := cli.PostForm(fmt.Sprintf("%s?captcha_id=%s", GEETESTCaptchaVerifyUrl, captchaId), formData)
if err != nil || resp.StatusCode != 200 {
return false, err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
return false, err
}
type captchaResponse struct {
Result string `json:"result"`
Reason string `json:"reason"`
}
captchaResp := &captchaResponse{}
err = json.Unmarshal(body, captchaResp)
if err != nil {
return false, err
}
if captchaResp.Result == "success" {
return true, nil
}
return false, errors.New(captchaResp.Reason)
}