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dingtalk.go
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dingtalk.go
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// Copyright 2021 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 idp
import (
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"time"
"golang.org/x/oauth2"
)
type DingTalkIdProvider struct {
Client *http.Client
Config *oauth2.Config
}
// NewDingTalkIdProvider ...
func NewDingTalkIdProvider(clientId string, clientSecret string, redirectUrl string) *DingTalkIdProvider {
idp := &DingTalkIdProvider{}
config := idp.getConfig(clientId, clientSecret, redirectUrl)
idp.Config = config
return idp
}
// SetHttpClient ...
func (idp *DingTalkIdProvider) SetHttpClient(client *http.Client) {
idp.Client = client
}
// getConfig return a point of Config, which describes a typical 3-legged OAuth2 flow
func (idp *DingTalkIdProvider) getConfig(clientId string, clientSecret string, redirectUrl string) *oauth2.Config {
endpoint := oauth2.Endpoint{
AuthURL: "https://api.dingtalk.com/v1.0/contact/users/me",
TokenURL: "https://api.dingtalk.com/v1.0/oauth2/userAccessToken",
}
config := &oauth2.Config{
// DingTalk not allow to set scopes,here it is just a placeholder,
// convenient to use later
Scopes: []string{"", ""},
Endpoint: endpoint,
ClientID: clientId,
ClientSecret: clientSecret,
RedirectURL: redirectUrl,
}
return config
}
type DingTalkAccessToken struct {
ErrCode int `json:"code"`
ErrMsg string `json:"message"`
AccessToken string `json:"accessToken"` // Interface call credentials
ExpiresIn int64 `json:"expireIn"` // access_token interface call credential timeout time, unit (seconds)
}
// GetToken use code get access_token (*operation of getting authCode ought to be done in front)
// get more detail via: https://open.dingtalk.com/document/orgapp-server/obtain-user-token
func (idp *DingTalkIdProvider) GetToken(code string) (*oauth2.Token, error) {
pTokenParams := &struct {
ClientId string `json:"clientId"`
ClientSecret string `json:"clientSecret"`
Code string `json:"code"`
GrantType string `json:"grantType"`
}{idp.Config.ClientID, idp.Config.ClientSecret, code, "authorization_code"}
data, err := idp.postWithBody(pTokenParams, idp.Config.Endpoint.TokenURL)
if err != nil {
return nil, err
}
pToken := &DingTalkAccessToken{}
err = json.Unmarshal(data, pToken)
if err != nil {
return nil, err
}
if pToken.ErrCode != 0 {
return nil, fmt.Errorf("pToken.Errcode = %d, pToken.Errmsg = %s", pToken.ErrCode, pToken.ErrMsg)
}
token := &oauth2.Token{
AccessToken: pToken.AccessToken,
Expiry: time.Unix(time.Now().Unix()+pToken.ExpiresIn, 0),
}
return token, nil
}
/*
{
{
"nick" : "zhangsan",
"avatarUrl" : "https://xxx",
"mobile" : "150xxxx9144",
"openId" : "123",
"unionId" : "z21HjQliSzpw0Yxxxx",
"email" : "zhangsan@alibaba-inc.com",
"stateCode" : "86"
}
*/
type DingTalkUserResponse struct {
Nick string `json:"nick"`
OpenId string `json:"openId"`
UnionId string `json:"unionId"`
AvatarUrl string `json:"avatarUrl"`
Email string `json:"email"`
Errmsg string `json:"message"`
Errcode string `json:"code"`
}
// GetUserInfo Use access_token to get UserInfo
// get more detail via: https://open.dingtalk.com/document/orgapp-server/dingtalk-retrieve-user-information
func (idp *DingTalkIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error) {
dtUserInfo := &DingTalkUserResponse{}
accessToken := token.AccessToken
reqest, err := http.NewRequest("GET", idp.Config.Endpoint.AuthURL, nil)
if err != nil {
return nil, err
}
reqest.Header.Add("x-acs-dingtalk-access-token", accessToken)
resp, err := idp.Client.Do(reqest)
if err != nil {
return nil, err
}
defer resp.Body.Close()
data, err := io.ReadAll(resp.Body)
if err != nil {
return nil, err
}
err = json.Unmarshal(data, dtUserInfo)
if err != nil {
return nil, err
}
if dtUserInfo.Errmsg != "" {
return nil, fmt.Errorf("userIdResp.Errcode = %s, userIdResp.Errmsg = %s", dtUserInfo.Errcode, dtUserInfo.Errmsg)
}
userInfo := UserInfo{
Id: dtUserInfo.OpenId,
Username: dtUserInfo.Nick,
DisplayName: dtUserInfo.Nick,
UnionId: dtUserInfo.UnionId,
Email: dtUserInfo.Email,
AvatarUrl: dtUserInfo.AvatarUrl,
}
return &userInfo, nil
}
func (idp *DingTalkIdProvider) postWithBody(body interface{}, url string) ([]byte, error) {
bs, err := json.Marshal(body)
if err != nil {
return nil, err
}
r := strings.NewReader(string(bs))
resp, err := idp.Client.Post(url, "application/json;charset=UTF-8", r)
if err != nil {
return nil, err
}
data, err := io.ReadAll(resp.Body)
if err != nil {
return nil, err
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
return
}
}(resp.Body)
return data, nil
}