fix: optimize IP whitelist validation logic (#11183)

Author: ssongliu

backend/init/router/router.go

@@ -3,14 +3,15 @@ package router
 import (
 	"encoding/base64"
 	"fmt"
-	"github.com/1Panel-dev/1Panel/backend/app/service"
-	"github.com/1Panel-dev/1Panel/backend/constant"
-	"github.com/1Panel-dev/1Panel/cmd/server/res"
 	"net/http"
 	"regexp"
 	"strconv"
 	"strings"
 
+	"github.com/1Panel-dev/1Panel/backend/app/service"
+	"github.com/1Panel-dev/1Panel/backend/constant"
+	"github.com/1Panel-dev/1Panel/cmd/server/res"
+
 	"github.com/1Panel-dev/1Panel/backend/global"
 	"github.com/1Panel-dev/1Panel/backend/i18n"
 	"github.com/1Panel-dev/1Panel/backend/middleware"
@@ -160,7 +161,7 @@ func setWebStatic(rootRouter *gin.RouterGroup) {
 }
 
 func Routers() *gin.Engine {
-	Router = gin.Default()
+	Router = gin.New()
 	Router.Use(middleware.OperationLog())
 	// Router.Use(middleware.CSRF())
 	// Router.Use(middleware.LoadCsrfToken())

backend/middleware/ip_limit.go

@@ -8,11 +8,17 @@ import (
 	"github.com/1Panel-dev/1Panel/backend/app/repo"
 	"github.com/1Panel-dev/1Panel/backend/constant"
 	"github.com/1Panel-dev/1Panel/backend/global"
+	"github.com/1Panel-dev/1Panel/backend/utils/common"
 	"github.com/gin-gonic/gin"
 )
 
 func WhiteAllow() gin.HandlerFunc {
 	return func(c *gin.Context) {
+		clientIP := common.GetRealClientIP(c)
+		if common.IsPrivateIP(clientIP) {
+			c.Next()
+			return
+		}
 		settingRepo := repo.NewISettingRepo()
 		status, err := settingRepo.Get(settingRepo.WithByKey("AllowIPs"))
 		if err != nil {
@@ -24,7 +30,6 @@ func WhiteAllow() gin.HandlerFunc {
 			c.Next()
 			return
 		}
-		clientIP := c.ClientIP()
 		for _, ip := range strings.Split(status.Value, ",") {
 			if len(ip) == 0 {
 				continue

backend/utils/common/common.go

@@ -426,3 +426,19 @@ func HandleIPList(content string) ([]string, error) {
 	}
 	return res, nil
 }
+
+func GetRealClientIP(c *gin.Context) string {
+	addr := c.Request.RemoteAddr
+	if ip, _, err := net.SplitHostPort(addr); err == nil {
+		return ip
+	}
+	return addr
+}
+
+func IsPrivateIP(ipStr string) bool {
+	ip := net.ParseIP(ipStr)
+	if ip == nil {
+		return false
+	}
+	return ip.IsPrivate() || ip.IsLoopback()
+}