1Panel/backend/middleware/ip_limit.go
2023-09-20 04:02:20 +00:00

64 lines
1.4 KiB
Go

package middleware
import (
"errors"
"net"
"strings"
"github.com/1Panel-dev/1Panel/backend/app/api/v1/helper"
"github.com/1Panel-dev/1Panel/backend/app/repo"
"github.com/1Panel-dev/1Panel/backend/constant"
"github.com/1Panel-dev/1Panel/backend/global"
"github.com/gin-gonic/gin"
)
func WhiteAllow() gin.HandlerFunc {
return func(c *gin.Context) {
settingRepo := repo.NewISettingRepo()
status, err := settingRepo.Get(settingRepo.WithByKey("AllowIPs"))
if err != nil {
helper.ErrorWithDetail(c, constant.CodeErrInternalServer, constant.ErrTypeInternalServer, err)
return
}
if len(status.Value) == 0 {
c.Next()
return
}
clientIP := c.ClientIP()
for _, ip := range strings.Split(status.Value, ",") {
if len(ip) == 0 {
continue
}
if ip == clientIP || (strings.Contains(ip, "/") && checkIpInCidr(ip, clientIP)) {
c.Next()
return
}
}
helper.ErrorWithDetail(c, constant.CodeErrIP, constant.ErrTypeInternalServer, errors.New("IP address not allowed"))
}
}
func checkIpInCidr(cidr, checkIP string) bool {
ip, ipNet, err := net.ParseCIDR(cidr)
if err != nil {
global.LOG.Errorf("parse CIDR %s failed, err: %v", cidr, err)
return false
}
for ip := ip.Mask(ipNet.Mask); ipNet.Contains(ip); incIP(ip) {
if ip.String() == checkIP {
return true
}
}
return false
}
func incIP(ip net.IP) {
for j := len(ip) - 1; j >= 0; j-- {
ip[j]++
if ip[j] > 0 {
break
}
}
}