fix: 优化防火墙端口转发错误信息 (#6967)

backend/app/service/firewall.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/1Panel-dev/1Panel/backend/app/dto"
 	"github.com/1Panel-dev/1Panel/backend/app/model"
+	"github.com/1Panel-dev/1Panel/backend/buserr"
 	"github.com/1Panel-dev/1Panel/backend/constant"
 	"github.com/1Panel-dev/1Panel/backend/global"
 	"github.com/1Panel-dev/1Panel/backend/utils/cmd"
@@ -86,6 +87,11 @@ func (u *FirewallService) SearchWithPage(req dto.RuleSearch) (int64, interface{}
 	case "port":
 		rules, err = client.ListPort()
 	case "forward":
+		isSupport, errSup := checkIsSupport()
+		if !isSupport {
+			return 0, nil, errSup
+		}
+
 		rules, err = client.ListForward()
 	case "address":
 		rules, err = client.ListAddress()
@@ -306,6 +312,11 @@ func (u *FirewallService) OperatePortRule(req dto.PortRuleOperate, reload bool)
 }
 
 func (u *FirewallService) OperateForwardRule(req dto.ForwardRuleOperate) error {
+	isSupport, errSup := checkIsSupport()
+	if !isSupport {
+		return errSup
+	}
+
 	client, err := firewall.NewFirewallClient()
 	if err != nil {
 		return err
@@ -689,3 +700,14 @@ func checkPortUsed(ports, proto string, apps []portOfApp) string {
 	}
 	return ""
 }
+
+func checkIsSupport() (bool, error) {
+	std, err := cmd.Exec("iptables --version")
+	if err != nil {
+		return false, fmt.Errorf("handle iptables --version failed, stdout: %s, err: %v", std, err)
+	}
+	if strings.Contains(std, "nf_tables") {
+		return false, buserr.New(constant.ErrNFTables)
+	}
+	return true, nil
+}

backend/constant/errs.go

@@ -143,7 +143,9 @@ var (
 )
 
 var (
-	ErrFirewall = "ErrFirewall"
+	ErrFirewallNone = "ErrFirewallNone"
+	ErrFirewallBoth = "ErrFirewallBoth"
+	ErrNFTables     = "ErrNFTables"
 )
 
 // cronjob

backend/i18n/lang/en.yaml

@@ -165,7 +165,9 @@ ErrConfigAlreadyExist: "A configuration file with the same name already exists"
 ErrUserFindErr: "Failed to find user {{ .name }} {{ .err }}"
 
 #ssh
-ErrFirewall: "No firewalld or ufw service is detected. Please check and try again!"
+ErrFirewallNone: "No firewalld or ufw service detected on the system. Please check and try again!"
+ErrFirewallBoth: "Both firewalld and ufw services are detected on the system. To avoid conflicts, please uninstall one and try again!"
+ErrNFTables: "Port forwarding functionality relies on the iptables service and is currently not compatible with nftables operations!"
 
 #cronjob
 ErrBashExecute: "Script execution error, please check the specific information in the task output text area."

backend/i18n/lang/zh-Hant.yaml

@@ -166,7 +166,9 @@ ErrConfigAlreadyExist: "已存在同名配置文件"
 ErrUserFindErr: "用戶 {{ .name }} 查找失敗 {{ .err }}"
 
 #ssh
-ErrFirewall: "當前未檢測到系統 firewalld 或 ufw 服務，請檢查後重試！"
+ErrFirewallNone: "未檢測到系統 firewalld 或 ufw 服務，請檢查後重試！"
+ErrFirewallBoth: "檢測到系統同時存在 firewalld 或 ufw 服務，為避免衝突，請卸載後重試！"
+ErrNFTables: "端口轉發功能依賴於 iptables 服務，暫不兼容 nftables 操作！"
 
 #cronjob
 ErrBashExecute: "腳本執行錯誤，請在任務輸出文本域中查看具體信息。"

backend/i18n/lang/zh.yaml

@@ -168,7 +168,9 @@ ErrConfigAlreadyExist: "已存在同名配置文件"
 ErrUserFindErr: "用户 {{ .name }} 查找失败 {{ .err }}"
 
 #ssh
-ErrFirewall: "当前未检测到系统 firewalld 或 ufw 服务，请检查后重试！"
+ErrFirewallNone: "未检测到系统 firewalld 或 ufw 服务，请检查后重试！"
+ErrFirewallBoth: "检测到系统同时存在 firewalld 或 ufw 服务，为避免冲突，请卸载后重试！"
+ErrNFTables: "端口转发功能依赖于 iptables 服务，暂不兼容 nftables 操作！"
 
 #cronjob
 ErrBashExecute: "脚本执行错误，请在任务输出文本域中查看具体信息。"

backend/utils/firewall/client.go

@@ -1,10 +1,9 @@
 package firewall
 
 import (
-	"os"
-
 	"github.com/1Panel-dev/1Panel/backend/buserr"
 	"github.com/1Panel-dev/1Panel/backend/constant"
+	"github.com/1Panel-dev/1Panel/backend/utils/cmd"
 	"github.com/1Panel-dev/1Panel/backend/utils/firewall/client"
 )
 
@@ -29,18 +28,18 @@ type FirewallClient interface {
 }
 
 func NewFirewallClient() (FirewallClient, error) {
-	_, firewalldErr := os.Stat("/usr/sbin/firewalld")
-	_, ufwErr := os.Stat("/usr/sbin/ufw")
+	firewalld := cmd.Which("firewalld")
+	ufw := cmd.Which("ufw")
 
-	if firewalldErr == nil && ufwErr == nil {
-		return nil, buserr.New("firewalld and ufw both found, only one firewall should be active")
+	if firewalld && ufw {
+		return nil, buserr.New(constant.ErrFirewallBoth)
 	}
 
-	if firewalldErr == nil {
+	if firewalld {
 		return client.NewFirewalld()
 	}
-	if ufwErr == nil {
+	if ufw {
 		return client.NewUfw()
 	}
-	return nil, buserr.New(constant.ErrFirewall)
+	return nil, buserr.New(constant.ErrFirewallNone)
 }