feat: Improve oauth redirect (#303)

* fix: redirects after oauth can potentially misalign with server's actually hostname

* feat: remove `RedirectURL` from oauth config, as it should checked by provider rather than client

* feat: align oauth endpoint with the hostname in requests

cmd/apimain.go

@@ -2,6 +2,10 @@ package main
 
 import (
 	"fmt"
+	"os"
+	"strconv"
+	"time"
+
 	"github.com/go-redis/redis/v8"
 	"github.com/lejianwen/rustdesk-api/v2/config"
 	"github.com/lejianwen/rustdesk-api/v2/global"
@@ -17,9 +21,6 @@ import (
 	"github.com/lejianwen/rustdesk-api/v2/utils"
 	"github.com/nicksnyder/go-i18n/v2/i18n"
 	"github.com/spf13/cobra"
-	"os"
-	"strconv"
-	"time"
 )
 
 // @title 管理系统API
@@ -210,7 +211,7 @@ func InitGlobal() {
 }
 
 func DatabaseAutoUpdate() {
-	version := 262
+	version := 263
 
 	db := global.DB
 

config/oauth.go

@@ -3,24 +3,20 @@ package config
 type GithubOauth struct {
 	ClientId     string `mapstructure:"client-id"`
 	ClientSecret string `mapstructure:"client-secret"`
-	RedirectUrl  string `mapstructure:"redirect-url"`
 }
 
 type GoogleOauth struct {
 	ClientId     string `mapstructure:"client-id"`
 	ClientSecret string `mapstructure:"client-secret"`
-	RedirectUrl  string `mapstructure:"redirect-url"`
 }
 
 type OidcOauth struct {
 	Issuer       string `mapstructure:"issuer"`
 	ClientId     string `mapstructure:"client-id"`
 	ClientSecret string `mapstructure:"client-secret"`
-	RedirectUrl  string `mapstructure:"redirect-url"`
 }
 
 type LinuxdoOauth struct {
 	ClientId     string `mapstructure:"client-id"`
 	ClientSecret string `mapstructure:"client-secret"`
-	RedirectUrl  string `mapstructure:"redirect-url"`
 }

docs/admin/admin_docs.go

@@ -5569,8 +5569,7 @@ const docTemplateadmin = `{
             "required": [
                 "client_id",
                 "client_secret",
-                "oauth_type",
+                "oauth_type"
-                "redirect_url"
             ],
             "properties": {
                 "auto_register": {
@@ -5600,9 +5599,6 @@ const docTemplateadmin = `{
                 "pkce_method": {
                     "type": "string"
                 },
-                "redirect_url": {
-                    "type": "string"
-                },
                 "scopes": {
                     "type": "string"
                 }
@@ -6296,9 +6292,6 @@ const docTemplateadmin = `{
                 "pkce_method": {
                     "type": "string"
                 },
-                "redirect_url": {
-                    "type": "string"
-                },
                 "scopes": {
                     "type": "string"
                 },

docs/admin/admin_swagger.json

@@ -5562,8 +5562,7 @@
             "required": [
                 "client_id",
                 "client_secret",
-                "oauth_type",
+                "oauth_type"
-                "redirect_url"
             ],
             "properties": {
                 "auto_register": {
@@ -5593,9 +5592,6 @@
                 "pkce_method": {
                     "type": "string"
                 },
-                "redirect_url": {
-                    "type": "string"
-                },
                 "scopes": {
                     "type": "string"
                 }
@@ -6289,9 +6285,6 @@
                 "pkce_method": {
                     "type": "string"
                 },
-                "redirect_url": {
-                    "type": "string"
-                },
                 "scopes": {
                     "type": "string"
                 },

docs/admin/admin_swagger.yaml

@@ -143,15 +143,12 @@ definitions:
         type: boolean
       pkce_method:
         type: string
-      redirect_url:
-        type: string
       scopes:
         type: string
     required:
     - client_id
     - client_secret
     - oauth_type
-    - redirect_url
     type: object
   admin.PeerBatchDeleteForm:
     properties:
@@ -611,8 +608,6 @@ definitions:
         type: boolean
       pkce_method:
         type: string
-      redirect_url:
-        type: string
       scopes:
         type: string
       updated_at:

http/controller/admin/login.go

@@ -2,6 +2,7 @@ package admin
 
 import (
 	"fmt"
+
 	"github.com/gin-gonic/gin"
 	"github.com/lejianwen/rustdesk-api/v2/global"
 	"github.com/lejianwen/rustdesk-api/v2/http/controller/api"
@@ -188,7 +189,7 @@ func (ct *Login) OidcAuth(c *gin.Context) {
 		return
 	}
 
-	err, state, verifier, nonce, url := service.AllService.OauthService.BeginAuth(f.Op)
+	err, state, verifier, nonce, url := service.AllService.OauthService.BeginAuth(c, f.Op)
 	if err != nil {
 		response.Error(c, response.TranslateMsg(c, err.Error()))
 		return

http/controller/admin/oauth.go

@@ -1,13 +1,14 @@
 package admin
 
 import (
+	"strconv"
+
 	"github.com/gin-gonic/gin"
 	"github.com/lejianwen/rustdesk-api/v2/global"
 	"github.com/lejianwen/rustdesk-api/v2/http/request/admin"
 	adminReq "github.com/lejianwen/rustdesk-api/v2/http/request/admin"
 	"github.com/lejianwen/rustdesk-api/v2/http/response"
 	"github.com/lejianwen/rustdesk-api/v2/service"
-	"strconv"
 )
 
 type Oauth struct {
@@ -43,7 +44,7 @@ func (o *Oauth) ToBind(c *gin.Context) {
 		return
 	}
 
-	err, state, verifier, nonce, url := service.AllService.OauthService.BeginAuth(f.Op)
+	err, state, verifier, nonce, url := service.AllService.OauthService.BeginAuth(c, f.Op)
 	if err != nil {
 		response.Error(c, response.TranslateMsg(c, err.Error()))
 		return

http/controller/api/ouath.go

@@ -1,6 +1,8 @@
 package api
 
 import (
+	"net/http"
+
 	"github.com/gin-gonic/gin"
 	"github.com/lejianwen/rustdesk-api/v2/global"
 	"github.com/lejianwen/rustdesk-api/v2/http/request/api"
@@ -10,7 +12,6 @@ import (
 	"github.com/lejianwen/rustdesk-api/v2/service"
 	"github.com/lejianwen/rustdesk-api/v2/utils"
 	"github.com/nicksnyder/go-i18n/v2/i18n"
-	"net/http"
 )
 
 type Oauth struct {
@@ -35,7 +36,7 @@ func (o *Oauth) OidcAuth(c *gin.Context) {
 
 	oauthService := service.AllService.OauthService
 
-	err, state, verifier, nonce, url := oauthService.BeginAuth(f.Op)
+	err, state, verifier, nonce, url := oauthService.BeginAuth(c, f.Op)
 	if err != nil {
 		response.Error(c, response.TranslateMsg(c, err.Error()))
 		return
@@ -169,7 +170,7 @@ func (o *Oauth) OauthCallback(c *gin.Context) {
 	var user *model.User
 	// 获取用户信息
 	code := c.Query("code")
-	err, oauthUser := oauthService.Callback(code, verifier, op, nonce)
+	err, oauthUser := oauthService.Callback(c, code, verifier, op, nonce)
 	if err != nil {
 		c.HTML(http.StatusOK, "oauth_fail.html", gin.H{
 			"message":     "OauthFailed",
@@ -225,8 +226,7 @@ func (o *Oauth) OauthCallback(c *gin.Context) {
 			if !*oauthConfig.AutoRegister {
 				//c.String(http.StatusInternalServerError, "还未绑定用户，请先绑定")
 				oauthCache.UpdateFromOauthUser(oauthUser)
-				url := global.Config.Rustdesk.ApiServer + "/_admin/#/oauth/bind/" + cacheKey
+				c.Redirect(http.StatusFound, "/_admin/#/oauth/bind/"+cacheKey)
-				c.Redirect(http.StatusFound, url)
 				return
 			}
 
@@ -251,8 +251,7 @@ func (o *Oauth) OauthCallback(c *gin.Context) {
 				Type:     model.LoginLogTypeOauth,
 				Platform: oauthService.DeviceOs,
 			})*/
-			url := global.Config.Rustdesk.ApiServer + "/_admin/#/"
+			c.Redirect(http.StatusFound, "/_admin/#/")
-			c.Redirect(http.StatusFound, url)
 			return
 		}
 		c.HTML(http.StatusOK, "oauth_success.html", gin.H{

http/request/admin/oauth.go

@@ -22,7 +22,6 @@ type OauthForm struct {
 	Scopes       string `json:"scopes" validate:"omitempty"`
 	ClientId     string `json:"client_id" validate:"required"`
 	ClientSecret string `json:"client_secret" validate:"required"`
-	RedirectUrl  string `json:"redirect_url" validate:"required"`
 	AutoRegister *bool  `json:"auto_register"`
 	PkceEnable   *bool  `json:"pkce_enable"`
 	PkceMethod   string `json:"pkce_method"`
@@ -34,7 +33,6 @@ func (of *OauthForm) ToOauth() *model.Oauth {
 		OauthType:    of.OauthType,
 		ClientId:     of.ClientId,
 		ClientSecret: of.ClientSecret,
-		RedirectUrl:  of.RedirectUrl,
 		AutoRegister: of.AutoRegister,
 		Issuer:       of.Issuer,
 		Scopes:       of.Scopes,

model/oauth.go

@@ -41,7 +41,6 @@ type Oauth struct {
 	OauthType    string `json:"oauth_type"`
 	ClientId     string `json:"client_id"`
 	ClientSecret string `json:"client_secret"`
-	RedirectUrl  string `json:"redirect_url"`
 	AutoRegister *bool  `json:"auto_register"`
 	Scopes       string `json:"scopes"`
 	Issuer       string `json:"issuer"`

service/oauth.go

@@ -4,11 +4,14 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+
 	"github.com/coreos/go-oidc/v3/oidc"
+	"github.com/gin-gonic/gin"
 	"github.com/lejianwen/rustdesk-api/v2/model"
 	"github.com/lejianwen/rustdesk-api/v2/utils"
 	"golang.org/x/oauth2"
 	"golang.org/x/oauth2/github"
+
 	// "golang.org/x/oauth2/google"
 	"gorm.io/gorm"
 	// "io"
@@ -93,16 +96,20 @@ func (os *OauthService) DeleteOauthCache(key string) {
 	OauthCache.Delete(key)
 }
 
-func (os *OauthService) BeginAuth(op string) (error error, state, verifier, nonce, url string) {
+func (os *OauthService) BeginAuth(c *gin.Context, op string) (error error, state, verifier, nonce, url string) {
 	state = utils.RandomString(10) + strconv.FormatInt(time.Now().Unix(), 10)
 	verifier = ""
 	nonce = ""
 	if op == model.OauthTypeWebauth {
-		url = Config.Rustdesk.ApiServer + "/_admin/#/oauth/" + state
+		host := c.GetHeader("Origin")
+		if host == "" {
+			host = Config.Rustdesk.ApiServer
+		}
+		url = host + "/_admin/#/oauth/" + state
 		//url = "http://localhost:8888/_admin/#/oauth/" + code
 		return nil, state, verifier, nonce, url
 	}
-	err, oauthInfo, oauthConfig, _ := os.GetOauthConfig(op)
+	err, oauthInfo, oauthConfig, _ := os.GetOauthConfig(c, op)
 	if err == nil {
 		extras := make([]oauth2.AuthCodeOption, 0, 3)
 
@@ -167,20 +174,20 @@ func (os *OauthService) LinuxdoProvider() *oidc.Provider {
 }
 
 // GetOauthConfig retrieves the OAuth2 configuration based on the provider name
-func (os *OauthService) GetOauthConfig(op string) (err error, oauthInfo *model.Oauth, oauthConfig *oauth2.Config, provider *oidc.Provider) {
+func (os *OauthService) GetOauthConfig(c *gin.Context, op string) (err error, oauthInfo *model.Oauth, oauthConfig *oauth2.Config, provider *oidc.Provider) {
 	//err, oauthInfo, oauthConfig = os.getOauthConfigGeneral(op)
 	oauthInfo = os.InfoByOp(op)
 	if oauthInfo.Id == 0 || oauthInfo.ClientId == "" || oauthInfo.ClientSecret == "" {
 		return errors.New("ConfigNotFound"), nil, nil, nil
 	}
-	// If the redirect URL is empty, use the default redirect URL
+	host := c.GetHeader("Origin")
-	if oauthInfo.RedirectUrl == "" {
+	if host == "" {
-		oauthInfo.RedirectUrl = Config.Rustdesk.ApiServer + "/api/oidc/callback"
+		host = Config.Rustdesk.ApiServer
 	}
 	oauthConfig = &oauth2.Config{
 		ClientID:     oauthInfo.ClientId,
 		ClientSecret: oauthInfo.ClientSecret,
-		RedirectURL:  oauthInfo.RedirectUrl,
+		RedirectURL:  host + "/api/oidc/callback",
 	}
 
 	// Maybe should validate the oauthConfig here
@@ -335,8 +342,8 @@ func (os *OauthService) oidcCallback(oauthConfig *oauth2.Config, provider *oidc.
 }
 
 // Callback: Get user information by code and op(Oauth provider)
-func (os *OauthService) Callback(code, verifier, op, nonce string) (err error, oauthUser *model.OauthUser) {
+func (os *OauthService) Callback(c *gin.Context, code, verifier, op, nonce string) (err error, oauthUser *model.OauthUser) {
-	err, oauthInfo, oauthConfig, provider := os.GetOauthConfig(op)
+	err, oauthInfo, oauthConfig, provider := os.GetOauthConfig(c, op)
 	// oauthType is already validated in GetOauthConfig
 	if err != nil {
 		return err, nil