feat: add Alipay support as idp (#638)

* feat: add alipay support as idp

* fix: rename a static svg icon

* fix: sort imports

* fix: no longer use pkcs8 package

go.sum

@@ -381,6 +381,7 @@ golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200604202706-70a84ac30bf9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20220208233918-bba287dce954 h1:BkypuErRT9A9I/iljuaG3/zdMjd/J6m8tKKJQtGfSdA=

idp/alipay.go

@@ -0,0 +1,292 @@
+// 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 idp
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha256"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/pem"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"sort"
+	"strings"
+	"time"
+
+	"golang.org/x/oauth2"
+)
+
+type AlipayIdProvider struct {
+	Client *http.Client
+	Config *oauth2.Config
+}
+
+// NewAlipayIdProvider ...
+func NewAlipayIdProvider(clientId string, clientSecret string, redirectUrl string) *AlipayIdProvider {
+	idp := &AlipayIdProvider{}
+
+	config := idp.getConfig(clientId, clientSecret, redirectUrl)
+	idp.Config = config
+
+	return idp
+}
+
+// SetHttpClient ...
+func (idp *AlipayIdProvider) SetHttpClient(client *http.Client) {
+	idp.Client = client
+}
+
+// getConfig return a point of Config, which describes a typical 3-legged OAuth2 flow
+func (idp *AlipayIdProvider) getConfig(clientId string, clientSecret string, redirectUrl string) *oauth2.Config {
+	var endpoint = oauth2.Endpoint{
+		AuthURL:  "https://openauth.alipay.com/oauth2/publicAppAuthorize.htm",
+		TokenURL: "https://openapi.alipay.com/gateway.do",
+	}
+
+	var config = &oauth2.Config{
+		Scopes:       []string{"", ""},
+		Endpoint:     endpoint,
+		ClientID:     clientId,
+		ClientSecret: clientSecret,
+		RedirectURL:  redirectUrl,
+	}
+
+	return config
+}
+
+type AlipayAccessToken struct {
+	Response AlipaySystemOauthTokenResponse `json:"alipay_system_oauth_token_response"`
+	Sign     string                         `json:"sign"`
+}
+
+type AlipaySystemOauthTokenResponse struct {
+	AccessToken  string `json:"access_token"`
+	AlipayUserId string `json:"alipay_user_id"`
+	ExpiresIn    int    `json:"expires_in"`
+	ReExpiresIn  int    `json:"re_expires_in"`
+	RefreshToken string `json:"refresh_token"`
+	UserId       string `json:"user_id"`
+}
+
+// GetToken use code to get access_token
+func (idp *AlipayIdProvider) GetToken(code string) (*oauth2.Token, error) {
+	pTokenParams := &struct {
+		ClientId  string `json:"app_id"`
+		CharSet   string `json:"charset"`
+		Code      string `json:"code"`
+		GrantType string `json:"grant_type"`
+		Method    string `json:"method"`
+		SignType  string `json:"sign_type"`
+		TimeStamp string `json:"timestamp"`
+		Version   string `json:"version"`
+	}{idp.Config.ClientID, "utf-8", code, "authorization_code", "alipay.system.oauth.token", "RSA2", time.Now().Format("2006-01-02 15:04:05"), "1.0"}
+
+	data, err := idp.postWithBody(pTokenParams, idp.Config.Endpoint.TokenURL)
+	if err != nil {
+		return nil, err
+	}
+
+	pToken := &AlipayAccessToken{}
+	err = json.Unmarshal(data, pToken)
+	if err != nil {
+		return nil, err
+	}
+
+	token := &oauth2.Token{
+		AccessToken: pToken.Response.AccessToken,
+		Expiry:      time.Unix(time.Now().Unix()+int64(pToken.Response.ExpiresIn), 0),
+	}
+	return token, nil
+}
+
+/*
+{
+    "alipay_user_info_share_response":{
+        "code":"10000",
+        "msg":"Success",
+        "avatar":"https:\/\/tfs.alipayobjects.com\/images\/partner\/T1.QxFXk4aXXXXXXXX",
+        "nick_name":"zhangsan",
+        "user_id":"2099222233334444"
+    },
+    "sign":"m8rWJeqfoa5tDQRRVnPhRHcpX7NZEgjIPTPF1QBxos6XXXXXXXXXXXXXXXXXXXXXXXXXX"
+}
+*/
+
+type AlipayUserResponse struct {
+	AlipayUserInfoShareResponse AlipayUserInfoShareResponse `json:"alipay_user_info_share_response"`
+	Sign                        string                      `json:"sign"`
+}
+
+type AlipayUserInfoShareResponse struct {
+	Code     string `json:"code"`
+	Msg      string `json:"msg"`
+	Avatar   string `json:"avatar"`
+	NickName string `json:"nick_name"`
+	UserId   string `json:"user_id"`
+}
+
+// GetUserInfo Use access_token to get UserInfo
+func (idp *AlipayIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error) {
+	atUserInfo := &AlipayUserResponse{}
+	accessToken := token.AccessToken
+
+	pTokenParams := &struct {
+		ClientId  string `json:"app_id"`
+		CharSet   string `json:"charset"`
+		AuthToken string `json:"auth_token"`
+		Method    string `json:"method"`
+		SignType  string `json:"sign_type"`
+		TimeStamp string `json:"timestamp"`
+		Version   string `json:"version"`
+	}{idp.Config.ClientID, "utf-8", accessToken, "alipay.user.info.share", "RSA2", time.Now().Format("2006-01-02 15:04:05"), "1.0"}
+	data, err := idp.postWithBody(pTokenParams, idp.Config.Endpoint.TokenURL)
+	if err != nil {
+		return nil, err
+	}
+
+	err = json.Unmarshal(data, atUserInfo)
+	if err != nil {
+		return nil, err
+	}
+
+	userInfo := UserInfo{
+		Id:          atUserInfo.AlipayUserInfoShareResponse.UserId,
+		Username:    atUserInfo.AlipayUserInfoShareResponse.NickName,
+		DisplayName: atUserInfo.AlipayUserInfoShareResponse.NickName,
+		AvatarUrl:   atUserInfo.AlipayUserInfoShareResponse.Avatar,
+	}
+
+	return &userInfo, nil
+}
+
+func (idp *AlipayIdProvider) postWithBody(body interface{}, targetUrl string) ([]byte, error) {
+	bs, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+
+	bodyJson := make(map[string]interface{})
+	err = json.Unmarshal(bs, &bodyJson)
+	if err != nil {
+		return nil, err
+	}
+
+	formData := url.Values{}
+	for k := range bodyJson {
+		formData.Set(k, bodyJson[k].(string))
+	}
+
+	sign, err := rsaSignWithRSA256(getStringToSign(formData), idp.Config.ClientSecret)
+	if err != nil {
+		return nil, err
+	}
+
+	formData.Set("sign", sign)
+
+	resp, err := idp.Client.PostForm(targetUrl, formData)
+	if err != nil {
+		return nil, err
+	}
+	data, err := ioutil.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
+}
+
+// get the string to sign, see https://opendocs.alipay.com/common/02kf5q
+func getStringToSign(formData url.Values) string {
+	keys := make([]string, 0, len(formData))
+	for k := range formData {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	str := ""
+	for _, k := range keys {
+		if k == "sign" || formData[k][0] == "" {
+			continue
+		} else {
+			str += "&" + k + "=" + formData[k][0]
+		}
+	}
+	str = strings.Trim(str, "&")
+	return str
+}
+
+// use privateKey to sign the content
+func rsaSignWithRSA256(signContent string, privateKey string) (string, error) {
+	privateKey = formatPrivateKey(privateKey)
+	block, _ := pem.Decode([]byte(privateKey))
+	if block == nil {
+		panic("fail to parse privateKey")
+	}
+
+	h := sha256.New()
+	h.Write([]byte(signContent))
+	hashed := h.Sum(nil)
+
+	privateKeyRSA, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+	if err != nil {
+		return "", err
+	}
+
+	signature, err := rsa.SignPKCS1v15(rand.Reader, privateKeyRSA.(*rsa.PrivateKey), crypto.SHA256, hashed)
+	if err != nil {
+		return "", err
+	}
+
+	return base64.StdEncoding.EncodeToString(signature), nil
+}
+
+// privateKey in database is a string, format it to PEM style
+func formatPrivateKey(privateKey string) string {
+	// each line length is 64
+	preFmtPrivateKey := ""
+	for i := 0; ; {
+		if i+64 <= len(privateKey) {
+			preFmtPrivateKey = preFmtPrivateKey + privateKey[i:i+64] + "\n"
+			i += 64
+		} else {
+			preFmtPrivateKey = preFmtPrivateKey + privateKey[i:]
+			break
+		}
+	}
+	privateKey = strings.Trim(preFmtPrivateKey, "\n")
+
+	// add pkcs#8 BEGIN and END
+	PemBegin := "-----BEGIN PRIVATE KEY-----\n"
+	PemEnd := "\n-----END PRIVATE KEY-----"
+	if !strings.HasPrefix(privateKey, PemBegin) {
+		privateKey = PemBegin + privateKey
+	}
+	if !strings.HasSuffix(privateKey, PemEnd) {
+		privateKey = privateKey + PemEnd
+	}
+	return privateKey
+}

idp/provider.go

@@ -70,6 +70,8 @@ func GetIdProvider(typ string, subType string, clientId string, clientSecret str
 		return NewAdfsIdProvider(clientId, clientSecret, redirectUrl, hostUrl)
 	} else if typ == "Baidu" {
 		return NewBaiduIdProvider(clientId, clientSecret, redirectUrl)
+	} else if typ == "Alipay" {
+		return NewAlipayIdProvider(clientId, clientSecret, redirectUrl)
 	} else if typ == "Infoflow" {
 		if subType == "Internal" {
 			return NewInfoflowInternalIdProvider(clientId, clientSecret, appId, redirectUrl)

object/provider.go

@@ -33,7 +33,7 @@ type Provider struct {
 	SubType       string `xorm:"varchar(100)" json:"subType"`
 	Method        string `xorm:"varchar(100)" json:"method"`
 	ClientId      string `xorm:"varchar(100)" json:"clientId"`
-	ClientSecret  string `xorm:"varchar(100)" json:"clientSecret"`
+	ClientSecret  string `xorm:"varchar(2000)" json:"clientSecret"`
 	ClientId2     string `xorm:"varchar(100)" json:"clientId2"`
 	ClientSecret2 string `xorm:"varchar(100)" json:"clientSecret2"`
 	Cert          string `xorm:"varchar(100)" json:"cert"`

object/user.go

@@ -85,6 +85,7 @@ type User struct {
 	Gitlab   string `xorm:"gitlab varchar(100)" json:"gitlab"`
 	Adfs     string `xorm:"adfs varchar(100)" json:"adfs"`
 	Baidu    string `xorm:"baidu varchar(100)" json:"baidu"`
+	Alipay   string `xorm:"alipay varchar(100)" json:"alipay"`
 	Casdoor  string `xorm:"casdoor varchar(100)" json:"casdoor"`
 	Infoflow string `xorm:"infoflow varchar(100)" json:"infoflow"`
 	Apple    string `xorm:"apple varchar(100)" json:"apple"`

web/src/Setting.js

@@ -402,6 +402,7 @@ export function getProviderTypeOptions(category) {
         {id: 'GitLab', name: 'GitLab'},
         {id: 'Adfs', name: 'Adfs'},
         {id: 'Baidu', name: 'Baidu'},
+        {id: 'Alipay', name: 'Alipay'},
         {id: 'Casdoor', name: 'Casdoor'},
         {id: 'Infoflow', name: 'Infoflow'},
         {id: 'Apple', name: 'Apple'},

web/src/auth/AlipayLoginButton.js

@@ -0,0 +1,32 @@
+// 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.
+
+import {createButton} from "react-social-login-buttons";
+import {StaticBaseUrl} from "../Setting";
+
+function Icon({ width = 24, height = 24, color }) {
+    return <img src={`${StaticBaseUrl}/buttons/alipay.svg`} alt="Sign in with Alipay" style={{width: 24, height: 24}} />;
+}
+
+const config = {
+    text: "Sign in with Alipay",
+    icon: Icon,
+    iconFormat: name => `fa fa-${name}`,
+    style: {background: "#ffffff", color: "#000000"},
+    activeStyle: {background: "#ededee"},
+};
+
+const AlipayLoginButton = createButton(config);
+
+export default AlipayLoginButton;

web/src/auth/LoginPage.js

@@ -36,6 +36,7 @@ import LarkLoginButton from "./LarkLoginButton";
 import GitLabLoginButton from "./GitLabLoginButton";
 import AdfsLoginButton from "./AdfsLoginButton";
 import BaiduLoginButton from "./BaiduLoginButton";
+import AlipayLoginButton from "./AlipayLoginButton";
 import CasdoorLoginButton from "./CasdoorLoginButton";
 import InfoflowLoginButton from "./InfoflowLoginButton";
 import AppleLoginButton from "./AppleLoginButton"
@@ -206,6 +207,8 @@ class LoginPage extends React.Component {
       return <CasdoorLoginButton text={text} align={"center"} />
     } else if (type === "Baidu") {
       return <BaiduLoginButton text={text} align={"center"} />
+    } else if (type === "Alipay") {
+      return <AlipayLoginButton text={text} align={"center"} />
     } else if (type === "Infoflow") {
       return <InfoflowLoginButton text={text} align={"center"} />
     } else if (type === "Apple") {

web/src/auth/Provider.js

@@ -78,6 +78,10 @@ const authInfo = {
     scope: "basic",
     endpoint: "http://openapi.baidu.com/oauth/2.0/authorize",
   },
+  Alipay: {
+    scope: "basic",
+    endpoint: "https://openauth.alipay.com/oauth2/publicAppAuthorize.htm",
+  },
   Casdoor: {
     scope: "openid%20profile%20email",
     endpoint: "http://example.com",
@@ -287,6 +291,8 @@ export function getAuthUrl(application, provider, method) {
     return `${provider.domain}/adfs/oauth2/authorize?client_id=${provider.clientId}&redirect_uri=${redirectUri}&state=${state}&response_type=code&nonce=casdoor&scope=openid`;
   } else if (provider.type === "Baidu") {
     return `${endpoint}?client_id=${provider.clientId}&redirect_uri=${redirectUri}&state=${state}&response_type=code&scope=${scope}&display=popup`;
+  } else if (provider.type === "Alipay") {
+    return `${endpoint}?app_id=${provider.clientId}&scope=auth_user&redirect_uri=${redirectUri}&state=${state}&response_type=code&scope=${scope}&display=popup`;
   } else if (provider.type === "Casdoor") {
     return `${provider.domain}/login/oauth/authorize?client_id=${provider.clientId}&redirect_uri=${redirectUri}&state=${state}&response_type=code&scope=${scope}`;
   } else if (provider.type === "Infoflow"){