support aliyun idaas oauth login

Signed-off-by: luxingmin <luxingmin@hongyaa.com.cn>

pkg/apiserver/authentication/identityprovider/aliyunidaas/idaas.go

@@ -0,0 +1,146 @@
+/*
+Copyright 2020 The KubeSphere Authors.
+
+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 aliyunidaas
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+
+	"golang.org/x/oauth2"
+	"gopkg.in/yaml.v3"
+	"kubesphere.io/kubesphere/pkg/apiserver/authentication/identityprovider"
+	"kubesphere.io/kubesphere/pkg/apiserver/authentication/oauth"
+)
+
+type AliyunIDaaS struct {
+	// ClientID is the application's ID.
+	ClientID string `json:"clientID" yaml:"clientID"`
+
+	// ClientSecret is the application's secret.
+	ClientSecret string `json:"-" yaml:"clientSecret"`
+
+	// Endpoint contains the resource server's token endpoint
+	// URLs. These are constants specific to each server and are
+	// often available via site-specific packages, such as
+	// google.Endpoint or github.Endpoint.
+	Endpoint Endpoint `json:"endpoint" yaml:"endpoint"`
+
+	// RedirectURL is the URL to redirect users going through
+	// the OAuth flow, after the resource owner's URLs.
+	RedirectURL string `json:"redirectURL" yaml:"redirectURL"`
+
+	// Scope specifies optional requested permissions.
+	Scopes []string `json:"scopes" yaml:"scopes"`
+}
+
+// Endpoint represents an OAuth 2.0 provider's authorization and token
+// endpoint URLs.
+type Endpoint struct {
+	AuthURL     string `json:"authURL" yaml:"authURL"`
+	TokenURL    string `json:"tokenURL" yaml:"tokenURL"`
+	UserInfoURL string `json:"user_info_url" yaml:"userInfoUrl"`
+}
+
+type IDaaSIdentity struct {
+	Sub         string `json:"sub"`
+	OuID        string `json:"ou_id"`
+	Nickname    string `json:"nickname"`
+	PhoneNumber string `json:"phone_number"`
+	OuName      string `json:"ou_name"`
+	Email       string `json:"email"`
+	Username    string `json:"username"`
+}
+
+type UserInfoResp struct {
+	Success       bool          `json:"success"`
+	Message       string        `json:"message"`
+	Code          string        `json:"code"`
+	IDaaSIdentity IDaaSIdentity `json:"data"`
+}
+
+func init() {
+	identityprovider.RegisterOAuthProvider(&AliyunIDaaS{})
+}
+
+func (a *AliyunIDaaS) Type() string {
+	return "AliyunIDaasProvider"
+}
+
+func (a *AliyunIDaaS) Setup(options *oauth.DynamicOptions) (identityprovider.OAuthProvider, error) {
+	data, err := yaml.Marshal(options)
+	if err != nil {
+		return nil, err
+	}
+	var provider AliyunIDaaS
+	err = yaml.Unmarshal(data, &provider)
+	if err != nil {
+		return nil, err
+	}
+	return &provider, nil
+}
+
+func (a IDaaSIdentity) GetName() string {
+	return a.Username
+}
+
+func (a IDaaSIdentity) GetEmail() string {
+	return a.Email
+}
+
+func (g *AliyunIDaaS) IdentityExchange(code string) (identityprovider.Identity, error) {
+	config := oauth2.Config{
+		ClientID:     g.ClientID,
+		ClientSecret: g.ClientSecret,
+		Endpoint: oauth2.Endpoint{
+			AuthURL:   g.Endpoint.AuthURL,
+			TokenURL:  g.Endpoint.TokenURL,
+			AuthStyle: oauth2.AuthStyleAutoDetect,
+		},
+		RedirectURL: g.RedirectURL,
+		Scopes:      g.Scopes,
+	}
+	token, err := config.Exchange(context.Background(), code)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := oauth2.NewClient(context.Background(), oauth2.StaticTokenSource(token)).Get(g.Endpoint.UserInfoURL)
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := ioutil.ReadAll(resp.Body)
+
+	defer resp.Body.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	var UserInfoResp UserInfoResp
+	err = json.Unmarshal(data, &UserInfoResp)
+	if err != nil {
+		return nil, err
+	}
+
+	if !UserInfoResp.Success {
+		return nil, errors.New(UserInfoResp.Message)
+	}
+
+	return UserInfoResp.IDaaSIdentity, nil
+}