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Feat: add reverse match for GeoIP

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This commit is contained in:
秋のかえで 2021-04-08 13:07:53 +08:00
parent 8a7cd65fc2
commit 68201a8898
No known key found for this signature in database
GPG Key ID: C687746B27587C0D
5 changed files with 106 additions and 32 deletions
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20
common/matcher/geoip/conf.go
View File

@ -99,14 +99,16 @@ func ParaseIPList(ips []string) ([]*GeoIP, error) {
for _, ip := range ips {
if strings.HasPrefix(ip, "geoip:") {
country := ip[6:]
isReverseMatch := false
geoipc, err := LoadGeoIP(strings.ToUpper(country))
if err != nil {
return nil, newError("failed to load GeoIP: ", country).Base(err)
}
geoipList = append(geoipList, &GeoIP{
CountryCode: strings.ToUpper(country),
Cidr: geoipc,
CountryCode: strings.ToUpper(country),
Cidr: geoipc,
ReverseMatch: isReverseMatch,
})
continue
}
@ -129,14 +131,24 @@ func ParaseIPList(ips []string) ([]*GeoIP, error) {
filename := kv[0]
country := kv[1]
if len(filename) == 0 || len(country) == 0 {
return nil, newError("empty filename or empty country in rule")
}
isReverseMatch := false
if strings.HasPrefix(country, "!") {
country = country[1:]
isReverseMatch = true
}
geoipc, err := LoadIPFile(filename, strings.ToUpper(country))
if err != nil {
return nil, newError("failed to load IPs: ", country, " from ", filename).Base(err)
}
geoipList = append(geoipList, &GeoIP{
CountryCode: strings.ToUpper(filename + "_" + country),
Cidr: geoipc,
CountryCode: strings.ToUpper(filename + "_" + country),
Cidr: geoipc,
ReverseMatch: isReverseMatch,
})
continue

29
common/matcher/geoip/geoip.go
View File

@ -15,11 +15,16 @@ type ipv6 struct {
}
type GeoIPMatcher struct {
countryCode string
ip4 []uint32
prefix4 []uint8
ip6 []ipv6
prefix6 []uint8
countryCode string
reverseMatch bool
ip4 []uint32
prefix4 []uint8
ip6 []ipv6
prefix6 []uint8
}
func (m *GeoIPMatcher) SetReverseMatch(isReverseMatch bool) {
m.reverseMatch = isReverseMatch
}
func normalize4(ip uint32, prefix uint8) uint32 {
@ -149,8 +154,17 @@ func (m *GeoIPMatcher) match6(ip ipv6) bool {
func (m *GeoIPMatcher) Match(ip net.IP) bool {
switch len(ip) {
case 4:
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]),
@ -170,14 +184,15 @@ type GeoIPMatcherContainer struct {
func (c *GeoIPMatcherContainer) Add(geoip *GeoIP) (*GeoIPMatcher, error) {
if len(geoip.CountryCode) > 0 {
for _, m := range c.matchers {
if m.countryCode == geoip.CountryCode {
if m.countryCode == geoip.CountryCode && m.reverseMatch == geoip.ReverseMatch {
return m, nil
}
}
}
m := &GeoIPMatcher{
countryCode: geoip.CountryCode,
countryCode: geoip.CountryCode,
reverseMatch: geoip.ReverseMatch,
}
if err := m.Init(geoip.Cidr); err != nil {
return nil, err

52
common/matcher/geoip/geoip.pb.go
View File

@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.25.0
// protoc v3.15.6
// protoc v3.15.7
// source: common/matcher/geoip/geoip.proto
package geoip
@ -88,8 +88,9 @@ type GeoIP struct {
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
CountryCode string `protobuf:"bytes,1,opt,name=country_code,json=countryCode,proto3" json:"country_code,omitempty"`
Cidr []*CIDR `protobuf:"bytes,2,rep,name=cidr,proto3" json:"cidr,omitempty"`
CountryCode string `protobuf:"bytes,1,opt,name=country_code,json=countryCode,proto3" json:"country_code,omitempty"`
Cidr []*CIDR `protobuf:"bytes,2,rep,name=cidr,proto3" json:"cidr,omitempty"`
ReverseMatch bool `protobuf:"varint,3,opt,name=reverse_match,json=reverseMatch,proto3" json:"reverse_match,omitempty"`
}
func (x *GeoIP) Reset() {
@ -138,6 +139,13 @@ func (x *GeoIP) GetCidr() []*CIDR {
return nil
}
func (x *GeoIP) GetReverseMatch() bool {
if x != nil {
return x.ReverseMatch
}
return false
}
type GeoIPList struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
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}
var (

1
common/matcher/geoip/geoip.proto
View File

@ -18,6 +18,7 @@ message CIDR {
message GeoIP {
string country_code = 1;
repeated CIDR cidr = 2;
bool reverse_match =3;
}
message GeoIPList {

36
common/matcher/geoip/geoip_test.go
View File

@ -135,6 +135,42 @@ func TestGeoIPMatcher4CN(t *testing.T) {
}
}
func TestGeoIPReverseMatcher(t *testing.T) {
cidrList := CIDRList{
{Ip: []byte{8, 8, 8, 8}, Prefix: 32},
{Ip: []byte{91, 108, 4, 0}, Prefix: 16},
}
matcher := &GeoIPMatcher{}
matcher.SetReverseMatch(true) // Reverse match
common.Must(matcher.Init(cidrList))
testCases := []struct {
Input string
Output bool
}{
{
Input: "8.8.8.8",
Output: false,
},
{
Input: "2001:cdba::3257:9652",
Output: true,
},
{
Input: "91.108.255.254",
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 TestGeoIPMatcher6US(t *testing.T) {
ips, err := loadGeoIP("US")
common.Must(err)