mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-22 05:06:07 +03:00
fix(app/router): fixed a bug in geoip matching with refactoring (#2489)
* Refactor the IP address matching with netipx library * Add a regression test for previous bug Fixes https://github.com/XTLS/Xray-core/issues/1933 --------- Co-authored-by: Loyalsoldier <10487845+Loyalsoldier@users.noreply.github.com>
This commit is contained in:
cty
GitHub
parent
10d6b06578
commit
b24a4028f1
@ -1,81 +1,49 @@
|
||||
package router
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"sort"
|
||||
"net/netip"
|
||||
"strconv"
|
||||
|
||||
"github.com/xtls/xray-core/common/net"
|
||||
"go4.org/netipx"
|
||||
)
|
||||
|
||||
type ipv6 struct {
|
||||
a uint64
|
||||
b uint64
|
||||
}
|
||||
|
||||
type GeoIPMatcher struct {
|
||||
countryCode string
|
||||
reverseMatch bool
|
||||
ip4 []uint32
|
||||
prefix4 []uint8
|
||||
ip6 []ipv6
|
||||
prefix6 []uint8
|
||||
}
|
||||
|
||||
func normalize4(ip uint32, prefix uint8) uint32 {
|
||||
return (ip >> (32 - prefix)) << (32 - prefix)
|
||||
}
|
||||
|
||||
func normalize6(ip ipv6, prefix uint8) ipv6 {
|
||||
if prefix <= 64 {
|
||||
ip.a = (ip.a >> (64 - prefix)) << (64 - prefix)
|
||||
ip.b = 0
|
||||
} else {
|
||||
ip.b = (ip.b >> (128 - prefix)) << (128 - prefix)
|
||||
}
|
||||
return ip
|
||||
ip4 *netipx.IPSet
|
||||
ip6 *netipx.IPSet
|
||||
}
|
||||
|
||||
func (m *GeoIPMatcher) Init(cidrs []*CIDR) error {
|
||||
ip4Count := 0
|
||||
ip6Count := 0
|
||||
var builder4, builder6 netipx.IPSetBuilder
|
||||
|
||||
for _, cidr := range cidrs {
|
||||
ip := cidr.Ip
|
||||
ip := net.IP(cidr.GetIp())
|
||||
ipPrefixString := ip.String() + "/" + strconv.Itoa(int(cidr.GetPrefix()))
|
||||
ipPrefix, err := netip.ParsePrefix(ipPrefixString)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch len(ip) {
|
||||
case 4:
|
||||
ip4Count++
|
||||
case 16:
|
||||
ip6Count++
|
||||
default:
|
||||
return newError("unexpect ip length: ", len(ip))
|
||||
case net.IPv4len:
|
||||
builder4.AddPrefix(ipPrefix)
|
||||
case net.IPv6len:
|
||||
builder6.AddPrefix(ipPrefix)
|
||||
}
|
||||
}
|
||||
|
||||
cidrList := CIDRList(cidrs)
|
||||
sort.Sort(&cidrList)
|
||||
|
||||
m.ip4 = make([]uint32, 0, ip4Count)
|
||||
m.prefix4 = make([]uint8, 0, ip4Count)
|
||||
m.ip6 = make([]ipv6, 0, ip6Count)
|
||||
m.prefix6 = make([]uint8, 0, ip6Count)
|
||||
|
||||
for _, cidr := range cidrList {
|
||||
ip := cidr.Ip
|
||||
prefix := uint8(cidr.Prefix)
|
||||
switch len(ip) {
|
||||
case 4:
|
||||
m.ip4 = append(m.ip4, normalize4(binary.BigEndian.Uint32(ip), prefix))
|
||||
m.prefix4 = append(m.prefix4, prefix)
|
||||
case 16:
|
||||
ip6 := ipv6{
|
||||
a: binary.BigEndian.Uint64(ip[0:8]),
|
||||
b: binary.BigEndian.Uint64(ip[8:16]),
|
||||
if ip4, err := builder4.IPSet(); err != nil {
|
||||
return err
|
||||
} else {
|
||||
m.ip4 = ip4
|
||||
}
|
||||
ip6 = normalize6(ip6, prefix)
|
||||
|
||||
m.ip6 = append(m.ip6, ip6)
|
||||
m.prefix6 = append(m.prefix6, prefix)
|
||||
}
|
||||
if ip6, err := builder6.IPSet(); err != nil {
|
||||
return err
|
||||
} else {
|
||||
m.ip6 = ip6
|
||||
}
|
||||
|
||||
return nil
|
||||
@ -85,91 +53,37 @@ func (m *GeoIPMatcher) SetReverseMatch(isReverseMatch bool) {
|
||||
m.reverseMatch = isReverseMatch
|
||||
}
|
||||
|
||||
func (m *GeoIPMatcher) match4(ip uint32) bool {
|
||||
if len(m.ip4) == 0 {
|
||||
func (m *GeoIPMatcher) match4(ip net.IP) bool {
|
||||
nip, ok := netipx.FromStdIP(ip)
|
||||
if !ok {
|
||||
return false
|
||||
}
|
||||
|
||||
if ip < m.ip4[0] {
|
||||
return false
|
||||
}
|
||||
|
||||
size := uint32(len(m.ip4))
|
||||
l := uint32(0)
|
||||
r := size
|
||||
for l < r {
|
||||
x := ((l + r) >> 1)
|
||||
if ip < m.ip4[x] {
|
||||
r = x
|
||||
continue
|
||||
}
|
||||
|
||||
nip := normalize4(ip, m.prefix4[x])
|
||||
if nip == m.ip4[x] {
|
||||
return true
|
||||
}
|
||||
|
||||
l = x + 1
|
||||
}
|
||||
|
||||
return l > 0 && normalize4(ip, m.prefix4[l-1]) == m.ip4[l-1]
|
||||
return m.ip4.Contains(nip)
|
||||
}
|
||||
|
||||
func less6(a ipv6, b ipv6) bool {
|
||||
return a.a < b.a || (a.a == b.a && a.b < b.b)
|
||||
}
|
||||
|
||||
func (m *GeoIPMatcher) match6(ip ipv6) bool {
|
||||
if len(m.ip6) == 0 {
|
||||
func (m *GeoIPMatcher) match6(ip net.IP) bool {
|
||||
nip, ok := netipx.FromStdIP(ip)
|
||||
if !ok {
|
||||
return false
|
||||
}
|
||||
|
||||
if less6(ip, m.ip6[0]) {
|
||||
return false
|
||||
}
|
||||
|
||||
size := uint32(len(m.ip6))
|
||||
l := uint32(0)
|
||||
r := size
|
||||
for l < r {
|
||||
x := (l + r) / 2
|
||||
if less6(ip, m.ip6[x]) {
|
||||
r = x
|
||||
continue
|
||||
}
|
||||
|
||||
if normalize6(ip, m.prefix6[x]) == m.ip6[x] {
|
||||
return true
|
||||
}
|
||||
|
||||
l = x + 1
|
||||
}
|
||||
|
||||
return l > 0 && normalize6(ip, m.prefix6[l-1]) == m.ip6[l-1]
|
||||
return m.ip6.Contains(nip)
|
||||
}
|
||||
|
||||
// Match returns true if the given ip is included by the GeoIP.
|
||||
func (m *GeoIPMatcher) Match(ip net.IP) bool {
|
||||
isMatched := false
|
||||
switch len(ip) {
|
||||
case 4:
|
||||
case net.IPv4len:
|
||||
isMatched = m.match4(ip)
|
||||
case net.IPv6len:
|
||||
isMatched = m.match6(ip)
|
||||
}
|
||||
if m.reverseMatch {
|
||||
return !m.match4(binary.BigEndian.Uint32(ip))
|
||||
}
|
||||
return m.match4(binary.BigEndian.Uint32(ip))
|
||||
case 16:
|
||||
if m.reverseMatch {
|
||||
return !m.match6(ipv6{
|
||||
a: binary.BigEndian.Uint64(ip[0:8]),
|
||||
b: binary.BigEndian.Uint64(ip[8:16]),
|
||||
})
|
||||
}
|
||||
return m.match6(ipv6{
|
||||
a: binary.BigEndian.Uint64(ip[0:8]),
|
||||
b: binary.BigEndian.Uint64(ip[8:16]),
|
||||
})
|
||||
default:
|
||||
return false
|
||||
return !isMatched
|
||||
}
|
||||
return isMatched
|
||||
}
|
||||
|
||||
// GeoIPMatcherContainer is a container for GeoIPMatchers. It keeps unique copies of GeoIPMatcher by country code.
|
||||
|
||||
@ -53,7 +53,7 @@ func TestGeoIPMatcherContainer(t *testing.T) {
|
||||
}
|
||||
|
||||
func TestGeoIPMatcher(t *testing.T) {
|
||||
cidrList := router.CIDRList{
|
||||
cidrList := []*router.CIDR{
|
||||
{Ip: []byte{0, 0, 0, 0}, Prefix: 8},
|
||||
{Ip: []byte{10, 0, 0, 0}, Prefix: 8},
|
||||
{Ip: []byte{100, 64, 0, 0}, Prefix: 10},
|
||||
@ -124,8 +124,40 @@ func TestGeoIPMatcher(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestGeoIPMatcherRegression(t *testing.T) {
|
||||
cidrList := []*router.CIDR{
|
||||
{Ip: []byte{98, 108, 20, 0}, Prefix: 22},
|
||||
{Ip: []byte{98, 108, 20, 0}, Prefix: 23},
|
||||
}
|
||||
|
||||
matcher := &router.GeoIPMatcher{}
|
||||
common.Must(matcher.Init(cidrList))
|
||||
|
||||
testCases := []struct {
|
||||
Input string
|
||||
Output bool
|
||||
}{
|
||||
{
|
||||
Input: "98.108.22.11",
|
||||
Output: true,
|
||||
},
|
||||
{
|
||||
Input: "98.108.25.0",
|
||||
Output: false,
|
||||
},
|
||||
}
|
||||
|
||||
for _, testCase := range testCases {
|
||||
ip := net.ParseAddress(testCase.Input).IP()
|
||||
actual := matcher.Match(ip)
|
||||
if actual != testCase.Output {
|
||||
t.Error("expect input", testCase.Input, "to be", testCase.Output, ", but actually", actual)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestGeoIPReverseMatcher(t *testing.T) {
|
||||
cidrList := router.CIDRList{
|
||||
cidrList := []*router.CIDR{
|
||||
{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
|
||||
{Ip: []byte{91, 108, 4, 0}, Prefix: 16},
|
||||
}
|
||||
|
||||
@ -9,45 +9,6 @@ import (
|
||||
"github.com/xtls/xray-core/features/routing"
|
||||
)
|
||||
|
||||
// CIDRList is an alias of []*CIDR to provide sort.Interface.
|
||||
type CIDRList []*CIDR
|
||||
|
||||
// Len implements sort.Interface.
|
||||
func (l *CIDRList) Len() int {
|
||||
return len(*l)
|
||||
}
|
||||
|
||||
// Less implements sort.Interface.
|
||||
func (l *CIDRList) Less(i int, j int) bool {
|
||||
ci := (*l)[i]
|
||||
cj := (*l)[j]
|
||||
|
||||
if len(ci.Ip) < len(cj.Ip) {
|
||||
return true
|
||||
}
|
||||
|
||||
if len(ci.Ip) > len(cj.Ip) {
|
||||
return false
|
||||
}
|
||||
|
||||
for k := 0; k < len(ci.Ip); k++ {
|
||||
if ci.Ip[k] < cj.Ip[k] {
|
||||
return true
|
||||
}
|
||||
|
||||
if ci.Ip[k] > cj.Ip[k] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return ci.Prefix < cj.Prefix
|
||||
}
|
||||
|
||||
// Swap implements sort.Interface.
|
||||
func (l *CIDRList) Swap(i int, j int) {
|
||||
(*l)[i], (*l)[j] = (*l)[j], (*l)[i]
|
||||
}
|
||||
|
||||
type Rule struct {
|
||||
Tag string
|
||||
Balancer *Balancer
|
||||
|
||||
1
go.mod
1
go.mod
@ -47,6 +47,7 @@ require (
|
||||
github.com/quic-go/qtls-go1-20 v0.3.3 // indirect
|
||||
github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
|
||||
go.uber.org/atomic v1.11.0 // indirect
|
||||
go4.org/netipx v0.0.0-20230824141953-6213f710f925 // indirect
|
||||
golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 // indirect
|
||||
golang.org/x/mod v0.12.0 // indirect
|
||||
golang.org/x/text v0.12.0 // indirect
|
||||
|
||||
2
go.sum
2
go.sum
@ -173,6 +173,8 @@ go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA=
|
||||
go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
|
||||
go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
|
||||
go4.org v0.0.0-20180809161055-417644f6feb5/go.mod h1:MkTOUMDaeVYJUOUsaDXIhWPZYa1yOyC1qaOBpL57BhE=
|
||||
go4.org/netipx v0.0.0-20230824141953-6213f710f925 h1:eeQDDVKFkx0g4Hyy8pHgmZaK0EqB4SD6rvKbUdN3ziQ=
|
||||
go4.org/netipx v0.0.0-20230824141953-6213f710f925/go.mod h1:PLyyIXexvUFg3Owu6p/WfdlivPbZJsZdgWZlrGope/Y=
|
||||
golang.org/x/build v0.0.0-20190111050920-041ab4dc3f9d/go.mod h1:OWs+y06UdEOHN4y+MfF/py+xQ/tYqIWW03b70/CG9Rw=
|
||||
golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
|
||||
Loading…
Reference in New Issue
Block a user