feat: add implicit flow support (#520)

* feat: add implicit flow support

Signed-off-by: Steve0x2a <stevesough@gmail.com>

* fix: idp support in implicit flow

Signed-off-by: Steve0x2a <stevesough@gmail.com>

controllers/account.go

@@ -24,8 +24,10 @@ import (
 )
 
 const (
-	ResponseTypeLogin = "login"
-	ResponseTypeCode  = "code"
+	ResponseTypeLogin   = "login"
+	ResponseTypeCode    = "code"
+	ResponseTypeToken   = "token"
+	ResponseTypeIdToken = "id_token"
 )
 
 type RequestForm struct {

controllers/auth.go

@@ -38,6 +38,14 @@ func codeToResponse(code *object.Code) *Response {
 	return &Response{Status: "ok", Msg: "", Data: code.Code}
 }
 
+func tokenToResponse(token *object.Token) *Response {
+	if token.AccessToken == "" {
+		return &Response{Status: "error", Msg: "fail to get accessToken", Data: token.AccessToken}
+	}
+	return &Response{Status: "ok", Msg: "", Data: token.AccessToken}
+
+}
+
 // HandleLoggedIn ...
 func (c *ApiController) HandleLoggedIn(application *object.Application, user *object.User, form *RequestForm) (resp *Response) {
 	userId := user.GetId()
@@ -66,6 +74,15 @@ func (c *ApiController) HandleLoggedIn(application *object.Application, user *ob
 			// The prompt page needs the user to be signed in
 			c.SetSessionUsername(userId)
 		}
+	} else if form.Type == ResponseTypeToken || form.Type == ResponseTypeIdToken { //implicit flow
+		if !object.IsGrantTypeValid(form.Type, application.GrantTypes) {
+			resp = &Response{Status: "error", Msg: fmt.Sprintf("error: grant_type: %s is not supported in this application", form.Type), Data: ""}
+		} else {
+			scope := c.Input().Get("scope")
+			token, _ := object.GetTokenByUser(application, user, scope, c.Ctx.Request.Host)
+			resp = tokenToResponse(token)
+		}
+
 	} else {
 		resp = &Response{Status: "error", Msg: fmt.Sprintf("Unknown response type: %s", form.Type)}
 	}

object/token.go

@@ -180,8 +180,8 @@ func GetTokenByAccessToken(accessToken string) *Token {
 }
 
 func CheckOAuthLogin(clientId string, responseType string, redirectUri string, scope string, state string) (string, *Application) {
-	if responseType != "code" {
-		return "response_type should be \"code\"", nil
+	if responseType != "code" && responseType != "token" && responseType != "id_token" {
+		return fmt.Sprintf("error: grant_type: %s is not supported in this application", responseType), nil
 	}
 
 	application := GetApplicationByClientId(clientId)
@@ -274,7 +274,7 @@ func GetOAuthToken(grantType string, clientId string, clientSecret string, code
 	}
 
 	//Check if grantType is allowed in the current application
-	if !isGrantTypeValid(grantType, application.GrantTypes) {
+	if !IsGrantTypeValid(grantType, application.GrantTypes) {
 		return &TokenWrapper{
 			AccessToken: fmt.Sprintf("error: grant_type: %s is not supported in this application", grantType),
 			TokenType:   "",
@@ -418,7 +418,7 @@ func pkceChallenge(verifier string) string {
 
 // Check if grantType is allowed in the current application
 // authorization_code is allowed by default
-func isGrantTypeValid(method string, grantTypes []string) bool {
+func IsGrantTypeValid(method string, grantTypes []string) bool {
 	if method == "authorization_code" {
 		return true
 	}
@@ -527,3 +527,28 @@ func GetClientCredentialsToken(application *Application, clientSecret string, sc
 	AddToken(token)
 	return token, nil
 }
+
+// Implicit flow
+func GetTokenByUser(application *Application, user *User, scope string, host string) (*Token, error) {
+	accessToken, refreshToken, err := generateJwtToken(application, user, "", scope, host)
+	if err != nil {
+		return nil, err
+	}
+	token := &Token{
+		Owner:        application.Owner,
+		Name:         util.GenerateId(),
+		CreatedTime:  util.GetCurrentTime(),
+		Application:  application.Name,
+		Organization: user.Owner,
+		User:         user.Name,
+		Code:         util.GenerateClientId(),
+		AccessToken:  accessToken,
+		RefreshToken: refreshToken,
+		ExpiresIn:    application.ExpireInHours * 60,
+		Scope:        scope,
+		TokenType:    "Bearer",
+		CodeIsUsed:   true,
+	}
+	AddToken(token)
+	return token, nil
+}

web/src/ApplicationEditPage.js

@@ -453,6 +453,8 @@ class ApplicationEditPage extends React.Component {
                           {id: "authorization_code", name: "Authorization Code"},
                           {id: "password", name: "Password"},
                           {id: "client_credentials", name: "Client Credentials"},
+                          {id: "token", name: "Token"},
+                          {id: "id_token",name:"ID Token"},
                         ].map((item, index)=><Option key={index} value={item.id}>{item.name}</Option>)
                       }
             </Select>

web/src/auth/AuthCallback.js

@@ -58,6 +58,10 @@ class AuthCallback extends React.Component {
       if (authServerUrl === realRedirectUrl) {
         return "login";
       } else {
+        const responseType = innerParams.get("response_type");
+        if (responseType !== null) {
+          return responseType
+        }
         return "code";
       }
     } else if (method === "link") {
@@ -116,6 +120,9 @@ class AuthCallback extends React.Component {
             const code = res.data;
             Setting.goToLink(`${oAuthParams.redirectUri}?code=${code}&state=${oAuthParams.state}`);
             // Util.showMessage("success", `Authorization code: ${res.data}`);
+          } else if (responseType === "token" || responseType === "id_token"){
+            const token = res.data;
+            Setting.goToLink(`${oAuthParams.redirectUri}?${responseType}=${token}&state=${oAuthParams.state}&token_type=bearer`);
           } else if (responseType === "link") {
             const from = innerParams.get("from");
             Setting.goToLinkSoft(this, from);

web/src/auth/LoginPage.js

@@ -116,14 +116,18 @@ class LoginPage extends React.Component {
   onFinish(values) {
     const application = this.getApplicationObj();
     const ths = this;
-    values["type"] = this.state.type;
-    values["phonePrefix"] = this.getApplicationObj()?.organizationObj.phonePrefix;
     const oAuthParams = Util.getOAuthGetParameters();
-
+    if (oAuthParams !== null && oAuthParams.responseType!= null && oAuthParams.responseType !== "") {
+      values["type"] = oAuthParams.responseType
+    }else{
+      values["type"] = this.state.type;
+    }
+    values["phonePrefix"] = this.getApplicationObj()?.organizationObj.phonePrefix;
+    
     AuthBackend.login(values, oAuthParams)
       .then((res) => {
         if (res.status === 'ok') {
-          const responseType = this.state.type;
+          const responseType = values["type"];
           if (responseType === "login") {
             Util.showMessage("success", `Logged in successfully`);
 
@@ -156,6 +160,9 @@ class LoginPage extends React.Component {
             }
 
             // Util.showMessage("success", `Authorization code: ${res.data}`);
+          } else if (responseType === "token" || responseType === "id_token") {
+            const accessToken = res.data;
+            Setting.goToLink(`${oAuthParams.redirectUri}#${responseType}=${accessToken}?state=${oAuthParams.state}&token_type=bearer`);
           }
         } else {
           Util.showMessage("error", `Failed to log in: ${res.msg}`);