2020-11-20 21:59:12 +08:00
										 
									 
								 
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								package helpers
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								import (
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									"github.com/TeaOSLab/EdgeAdmin/internal/events"
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									nodes "github.com/TeaOSLab/EdgeAdmin/internal/rpc"
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									"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
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									"github.com/TeaOSLab/EdgeCommon/pkg/systemconfigs"
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									"github.com/iwind/TeaGo/lists"
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									"github.com/iwind/TeaGo/logs"
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									"net"
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									"sync"
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								)
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								var ipCacheMap = map[string]bool{} // ip => bool
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								var ipCacheLocker = sync.Mutex{}
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								func init() {
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									events.On(events.EventSecurityConfigChanged, func() {
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										ipCacheLocker.Lock()
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										ipCacheMap = map[string]bool{}
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										ipCacheLocker.Unlock()
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									})
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								}
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								// 检查用户IP并支持缓存
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								func checkIP(config *systemconfigs.SecurityConfig, ipAddr string) bool {
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									ipCacheLocker.Lock()
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									ipCache, ok := ipCacheMap[ipAddr]
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									if ok && ipCache {
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										ipCacheLocker.Unlock()
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										return ipCache
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									}
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									ipCacheLocker.Unlock()
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									result := checkIPWithoutCache(config, ipAddr)
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									ipCacheLocker.Lock()
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									// 缓存的内容不能过多
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									if len(ipCacheMap) > 100_000 {
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										ipCacheMap = map[string]bool{}
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									}
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									ipCacheMap[ipAddr] = result
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									ipCacheLocker.Unlock()
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									return result
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								}
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								// 检查用户IP
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								func checkIPWithoutCache(config *systemconfigs.SecurityConfig, ipAddr string) bool {
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									if config == nil {
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										return true
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									}
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									// 本地IP
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									ipObj := net.ParseIP(ipAddr)
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									if ipObj == nil {
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										logs.Println("[USER_MUST_AUTH]parse ip: invalid client address: " + ipAddr)
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										return false
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									}
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									ip := ipObj.To4()
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									if ip == nil {
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										// IPv6
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										ip = ipObj.To16()
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										if ip == nil {
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											logs.Println("[USER_MUST_AUTH]invalid client address: " + ipAddr)
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											return false
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										}
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									}
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									if config.AllowLocal && isLocalIP(ip) {
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										return true
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									}
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									// 检查位置
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									if len(config.AllowCountryIds) > 0 || len(config.AllowProvinceIds) > 0 {
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										rpc, err := nodes.SharedRPC()
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										if err != nil {
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											logs.Println("[USER_MUST_AUTH][ERROR]" + err.Error())
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											return false
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										}
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										resp, err := rpc.IPLibraryRPC().LookupIPRegion(rpc.Context(0), &pb.LookupIPRegionRequest{Ip: ipAddr})
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										if err != nil {
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											logs.Println("[USER_MUST_AUTH][ERROR]" + err.Error())
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											return false
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										}
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										if resp.IpRegion == nil {
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											return true
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										}
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										if len(config.AllowCountryIds) > 0 && !lists.ContainsInt64(config.AllowCountryIds, resp.IpRegion.CountryId) {
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											return false
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										}
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										if len(config.AllowProvinceIds) > 0 && !lists.ContainsInt64(config.AllowProvinceIds, resp.IpRegion.ProvinceId) {
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											return false
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										}
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									}
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									// 检查单独允许的IP
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									if len(config.AllowIPRanges()) > 0 {
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										for _, r := range config.AllowIPRanges() {
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											if r.Contains(ipAddr) {
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												return true
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											}
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										}
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										return false
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									}
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									return true
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								}
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								// 判断是否为本地IP
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								func isLocalIP(ip net.IP) bool {
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									if ip[0] == 127 ||
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										ip[0] == 10 ||
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										(ip[0] == 172 && ip[1]&0xf0 == 16) ||
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										(ip[0] == 192 && ip[1] == 168) {
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										return true
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									}
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									if ip.String() == "::1" {
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										return true
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									}
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									return false
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								}
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