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Code Issues Releases Wiki Activity

Merge branch 'dev-fakednsimprovement'

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This commit is contained in:
Shelikhoo 2021-04-13 15:14:47 +01:00
commit f5d2ddedb4
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GPG Key ID: C4D5E79D22B25316
11 changed files with 381 additions and 20 deletions
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5
app/dispatcher/default.go
View File

@ -186,6 +186,11 @@ func shouldOverride(result SniffResult, domainOverride []string) bool {
if strings.HasPrefix(protocolString, p) {
return true
}
if resultSubset, ok := result.(SnifferIsProtoSubsetOf); ok {
if resultSubset.IsProtoSubsetOf(p) {
return true
}
}
}
return false
}

70
app/dispatcher/fakednssniffer.go
View File

@ -4,6 +4,7 @@ package dispatcher
import (
"context"
"strings"
core "github.com/v2fly/v2ray-core/v4"
"github.com/v2fly/v2ray-core/v4/common"
@ -34,6 +35,15 @@ func newFakeDNSSniffer(ctx context.Context) (protocolSnifferWithMetadata, error)
return &fakeDNSSniffResult{domainName: domainFromFakeDNS}, nil
}
}
if ipAddressInRangeValueI := ctx.Value(ipAddressInRange); ipAddressInRangeValueI != nil {
ipAddressInRangeValue := ipAddressInRangeValueI.(*ipAddressInRangeOpt)
if fkr0, ok := fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
inPool := fkr0.IsIPInIPPool(Target.Address)
ipAddressInRangeValue.addressInRange = &inPool
}
}
return nil, common.ErrNoClue
}, metadataSniffer: true}, nil
}
@ -49,3 +59,63 @@ func (fakeDNSSniffResult) Protocol() string {
func (f fakeDNSSniffResult) Domain() string {
return f.domainName
}
type fakeDnsExtraOpts int
const ipAddressInRange fakeDnsExtraOpts = 1
type ipAddressInRangeOpt struct {
addressInRange *bool
}
type DNSThenOthersSniffResult struct {
domainName string
protocolOriginalName string
}
func (f DNSThenOthersSniffResult) IsProtoSubsetOf(protocolName string) bool {
if strings.HasPrefix(protocolName, f.protocolOriginalName) {
return true
}
return false
}
func (DNSThenOthersSniffResult) Protocol() string {
return "fakedns+others"
}
func (f DNSThenOthersSniffResult) Domain() string {
return f.domainName
}
func newFakeDNSThenOthers(ctx context.Context, fakeDNSSniffer protocolSnifferWithMetadata, others []protocolSnifferWithMetadata) (protocolSnifferWithMetadata, error) {
return protocolSnifferWithMetadata{
protocolSniffer: func(ctx context.Context, bytes []byte) (SniffResult, error) {
ipAddressInRangeValue := &ipAddressInRangeOpt{}
ctx = context.WithValue(ctx, ipAddressInRange, ipAddressInRangeValue)
result, err := fakeDNSSniffer.protocolSniffer(ctx, bytes)
if err == nil {
return result, nil
}
if ipAddressInRangeValue.addressInRange != nil {
if *ipAddressInRangeValue.addressInRange == true {
for _, v := range others {
if v.metadataSniffer || bytes != nil {
if result, err := v.protocolSniffer(ctx, bytes); err == nil {
return DNSThenOthersSniffResult{domainName: result.Domain(), protocolOriginalName: result.Protocol()}, nil
}
}
}
return nil, common.ErrNoClue
} else {
newError("ip address not in fake dns range, return as is").AtDebug().WriteToLog()
return nil, common.ErrNoClue
}
} else {
newError("fake dns sniffer did not set address in range option, assume false.").AtWarning().WriteToLog()
return nil, common.ErrNoClue
}
},
metadataSniffer: false,
}, nil
}

9
app/dispatcher/sniffer.go
View File

@ -39,7 +39,12 @@ func NewSniffer(ctx context.Context) *Sniffer {
},
}
if sniffer, err := newFakeDNSSniffer(ctx); err == nil {
others := ret.sniffer
ret.sniffer = append(ret.sniffer, sniffer)
fakeDNSThenOthers, err := newFakeDNSThenOthers(ctx, sniffer, others)
if err == nil {
ret.sniffer = append([]protocolSnifferWithMetadata{fakeDNSThenOthers}, ret.sniffer...)
}
}
return ret
}
@ -123,3 +128,7 @@ func (c compositeResult) ProtocolForDomainResult() string {
type SnifferResultComposite interface {
ProtocolForDomainResult() string
}
type SnifferIsProtoSubsetOf interface {
IsProtoSubsetOf(protocolName string) bool
}

104
app/dns/fakedns/fake.go
View File

@ -23,6 +23,18 @@ type Holder struct {
config *FakeDnsPool
}
func (fkdns *Holder) IsIPInIPPool(ip net.Address) bool {
return fkdns.ipRange.Contains(ip.IP())
}
func (fkdns *Holder) GetFakeIPForDomain3(domain string, IPv4, IPv6 bool) []net.Address {
isIPv6 := fkdns.ipRange.IP.To4() == nil
if (isIPv6 && IPv6) || (!isIPv6 && IPv4) {
return fkdns.GetFakeIPForDomain(domain)
}
return []net.Address{}
}
func (*Holder) Type() interface{} {
return (*dns.FakeDNSEngine)(nil)
}
@ -120,6 +132,89 @@ func (fkdns *Holder) GetDomainFromFakeDNS(ip net.Address) string {
return ""
}
type HolderMulti struct {
holders []*Holder
config *FakeDnsPoolMulti
}
func (h *HolderMulti) IsIPInIPPool(ip net.Address) bool {
for _, v := range h.holders {
if v.IsIPInIPPool(ip) {
return true
}
}
return false
}
func (h *HolderMulti) GetFakeIPForDomain3(domain string, IPv4, IPv6 bool) []net.Address {
var ret []net.Address
for _, v := range h.holders {
ret = append(ret, v.GetFakeIPForDomain3(domain, IPv4, IPv6)...)
}
return ret
}
func (h *HolderMulti) GetFakeIPForDomain(domain string) []net.Address {
var ret []net.Address
for _, v := range h.holders {
ret = append(ret, v.GetFakeIPForDomain(domain)...)
}
return ret
}
func (h *HolderMulti) GetDomainFromFakeDNS(ip net.Address) string {
for _, v := range h.holders {
if domain := v.GetDomainFromFakeDNS(ip); domain != "" {
return domain
}
}
return ""
}
func (h *HolderMulti) Type() interface{} {
return (*dns.FakeDNSEngine)(nil)
}
func (h *HolderMulti) Start() error {
for _, v := range h.holders {
err := v.Start()
if err != nil {
return newError("Cannot start all fake dns pools").Base(err)
}
}
return nil
}
func (h *HolderMulti) Close() error {
for _, v := range h.holders {
err := v.Start()
if err != nil {
return newError("Cannot close all fake dns pools").Base(err)
}
}
return nil
}
func (h *HolderMulti) createHolderGroups() error {
for _, v := range h.config.Pools {
holder, err := NewFakeDNSHolderConfigOnly(v)
if err != nil {
return err
}
h.holders = append(h.holders, holder)
}
return nil
}
func NewFakeDNSHolderMulti(conf *FakeDnsPoolMulti) (*HolderMulti, error) {
holderMulti := &HolderMulti{nil, conf}
if err := holderMulti.createHolderGroups(); err != nil {
return nil, err
}
return holderMulti, nil
}
func init() {
common.Must(common.RegisterConfig((*FakeDnsPool)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
var f *Holder
@ -129,4 +224,13 @@ func init() {
}
return f, nil
}))
common.Must(common.RegisterConfig((*FakeDnsPoolMulti)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
var f *HolderMulti
var err error
if f, err = NewFakeDNSHolderMulti(config.(*FakeDnsPoolMulti)); err != nil {
return nil, err
}
return f, nil
}))
}

100
app/dns/fakedns/fakedns.pb.go
View File

@ -75,6 +75,53 @@ func (x *FakeDnsPool) GetLruSize() int64 {
return 0
}
type FakeDnsPoolMulti struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Pools []*FakeDnsPool `protobuf:"bytes,1,rep,name=pools,proto3" json:"pools,omitempty"`
}
func (x *FakeDnsPoolMulti) Reset() {
*x = FakeDnsPoolMulti{}
if protoimpl.UnsafeEnabled {
mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *FakeDnsPoolMulti) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*FakeDnsPoolMulti) ProtoMessage() {}
func (x *FakeDnsPoolMulti) ProtoReflect() protoreflect.Message {
mi := &file_app_dns_fakedns_fakedns_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use FakeDnsPoolMulti.ProtoReflect.Descriptor instead.
func (*FakeDnsPoolMulti) Descriptor() ([]byte, []int) {
return file_app_dns_fakedns_fakedns_proto_rawDescGZIP(), []int{1}
}
func (x *FakeDnsPoolMulti) GetPools() []*FakeDnsPool {
if x != nil {
return x.Pools
}
return nil
}
var File_app_dns_fakedns_fakedns_proto protoreflect.FileDescriptor
var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
@ -85,15 +132,20 @@ var file_app_dns_fakedns_fakedns_proto_rawDesc = []byte{
0x61, 0x6b, 0x65, 0x44, 0x6e, 0x73, 0x50, 0x6f, 0x6f, 0x6c, 0x12, 0x17, 0x0a, 0x07, 0x69, 0x70,
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0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
}
var (
@ -108,16 +160,18 @@ func file_app_dns_fakedns_fakedns_proto_rawDescGZIP() []byte {
return file_app_dns_fakedns_fakedns_proto_rawDescData
}
var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
var file_app_dns_fakedns_fakedns_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_app_dns_fakedns_fakedns_proto_goTypes = []interface{}{
(*FakeDnsPool)(nil), // 0: v2ray.core.app.dns.fakedns.FakeDnsPool
(*FakeDnsPool)(nil), // 0: v2ray.core.app.dns.fakedns.FakeDnsPool
(*FakeDnsPoolMulti)(nil), // 1: v2ray.core.app.dns.fakedns.FakeDnsPoolMulti
}
var file_app_dns_fakedns_fakedns_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
0, // 0: v2ray.core.app.dns.fakedns.FakeDnsPoolMulti.pools:type_name -> v2ray.core.app.dns.fakedns.FakeDnsPool
1, // [1:1] is the sub-list for method output_type
1, // [1:1] is the sub-list for method input_type
1, // [1:1] is the sub-list for extension type_name
1, // [1:1] is the sub-list for extension extendee
0, // [0:1] is the sub-list for field type_name
}
func init() { file_app_dns_fakedns_fakedns_proto_init() }
@ -138,6 +192,18 @@ func file_app_dns_fakedns_fakedns_proto_init() {
return nil
}
}
file_app_dns_fakedns_fakedns_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*FakeDnsPoolMulti); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
@ -145,7 +211,7 @@ func file_app_dns_fakedns_fakedns_proto_init() {
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_app_dns_fakedns_fakedns_proto_rawDesc,
NumEnums: 0,
NumMessages: 1,
NumMessages: 2,
NumExtensions: 0,
NumServices: 0,
},

4
app/dns/fakedns/fakedns.proto
View File

@ -10,3 +10,7 @@ message FakeDnsPool{
string ip_pool = 1; //CIDR of IP pool used as fake DNS IP
int64 lruSize = 2; //Size of Pool for remembering relationship between domain name and IP address
}
message FakeDnsPoolMulti{
repeated FakeDnsPool pools = 1;
}

77
app/dns/fakedns/fakedns_test.go
View File

@ -3,6 +3,8 @@ package fakedns
import (
"testing"
gonet "net"
"github.com/stretchr/testify/assert"
"github.com/v2fly/v2ray-core/v4/common"
@ -113,3 +115,78 @@ func TestFakeDnsHolderCreateMappingAndRollOver(t *testing.T) {
}
}
}
func TestFakeDNSMulti(t *testing.T) {
fakeMulti, err := NewFakeDNSHolderMulti(&FakeDnsPoolMulti{
Pools: []*FakeDnsPool{&FakeDnsPool{
IpPool: "240.0.0.0/12",
LruSize: 256,
}, &FakeDnsPool{
IpPool: "fddd:c5b4:ff5f:f4f0::/64",
LruSize: 256,
}},
},
)
err = fakeMulti.Start()
common.Must(err)
assert.Nil(t, err, "Should not throw error")
_ = fakeMulti
t.Run("checkInRange", func(t *testing.T) {
t.Run("ipv4", func(t *testing.T) {
inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{240, 0, 0, 5}))
assert.True(t, inPool)
})
t.Run("ipv6", func(t *testing.T) {
ip, err := gonet.ResolveIPAddr("ip", "fddd:c5b4:ff5f:f4f0::5")
assert.Nil(t, err)
inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
assert.True(t, inPool)
})
t.Run("ipv4_inverse", func(t *testing.T) {
inPool := fakeMulti.IsIPInIPPool(net.IPAddress([]byte{241, 0, 0, 5}))
assert.False(t, inPool)
})
t.Run("ipv6_inverse", func(t *testing.T) {
ip, err := gonet.ResolveIPAddr("ip", "fcdd:c5b4:ff5f:f4f0::5")
assert.Nil(t, err)
inPool := fakeMulti.IsIPInIPPool(net.IPAddress(ip.IP))
assert.False(t, inPool)
})
})
t.Run("allocateTwoAddressForTwoPool", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain("fakednstest.v2fly.org")
assert.Len(t, address, 2, "should be 2 address one for each pool")
t.Run("eachOfThemShouldResolve:0", func(t *testing.T) {
domain := fakeMulti.GetDomainFromFakeDNS(address[0])
assert.Equal(t, "fakednstest.v2fly.org", domain)
})
t.Run("eachOfThemShouldResolve:1", func(t *testing.T) {
domain := fakeMulti.GetDomainFromFakeDNS(address[1])
assert.Equal(t, "fakednstest.v2fly.org", domain)
})
})
t.Run("understandIPTypeSelector", func(t *testing.T) {
t.Run("ipv4", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv4.v2fly.org", true, false)
assert.Len(t, address, 1, "should be 1 address")
assert.True(t, address[0].Family().IsIPv4())
})
t.Run("ipv6", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv6.v2fly.org", false, true)
assert.Len(t, address, 1, "should be 1 address")
assert.True(t, address[0].Family().IsIPv6())
})
t.Run("ipv46", func(t *testing.T) {
address := fakeMulti.GetFakeIPForDomain3("fakednstestipv46.v2fly.org", true, true)
assert.Len(t, address, 2, "should be 2 address")
assert.True(t, address[0].Family().IsIPv4())
assert.True(t, address[1].Family().IsIPv6())
})
})
}

9
app/dns/nameserver_fakedns.go
View File

@ -22,7 +22,7 @@ func (FakeDNSServer) Name() string {
return "FakeDNS"
}
func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, _ dns.IPOption, _ bool) ([]net.IP, error) {
func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
if f.fakeDNSEngine == nil {
if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
f.fakeDNSEngine = fd
@ -30,7 +30,12 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, _
return nil, newError("Unable to locate a fake DNS Engine").Base(err).AtError()
}
}
ips := f.fakeDNSEngine.GetFakeIPForDomain(domain)
var ips []net.Address
if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)
} else {
ips = f.fakeDNSEngine.GetFakeIPForDomain(domain)
}
netIP, err := toNetIP(ips)
if err != nil {

5
features/dns/fakedns.go
View File

@ -10,3 +10,8 @@ type FakeDNSEngine interface {
GetFakeIPForDomain(domain string) []net.Address
GetDomainFromFakeDNS(ip net.Address) string
}
type FakeDNSEngineRev0 interface {
IsIPInIPPool(ip net.Address) bool
GetFakeIPForDomain3(domain string, IPv4, IPv6 bool) []net.Address
}

16
infra/conf/fakedns.go
View File

@ -6,12 +6,26 @@ import (
"github.com/v2fly/v2ray-core/v4/app/dns/fakedns"
)
type FakeDNSConfig struct {
type FakeDNSPoolElementConfig struct {
IPPool string `json:"ipPool"`
LruSize int64 `json:"poolSize"`
}
type FakeDNSConfig struct {
IPPool string `json:"ipPool"`
LruSize int64 `json:"poolSize"`
Pools *[]FakeDNSPoolElementConfig `json:"pools,omitempty"`
}
func (f FakeDNSConfig) Build() (proto.Message, error) {
if f.Pools != nil {
fakeDNSPool := &fakedns.FakeDnsPoolMulti{}
for _, v := range *f.Pools {
fakeDNSPool.Pools = append(fakeDNSPool.Pools, &fakedns.FakeDnsPool{IpPool: v.IPPool, LruSize: v.LruSize})
}
return fakeDNSPool, nil
}
return &fakedns.FakeDnsPool{
IpPool: f.IPPool,
LruSize: f.LruSize,

2
infra/conf/v2ray.go
View File

@ -75,6 +75,8 @@ func (c *SniffingConfig) Build() (*proxyman.SniffingConfig, error) {
p = append(p, "tls")
case "fakedns":
p = append(p, "fakedns")
case "fakedns+others":
p = append(p, "fakedns+others")
default:
return nil, newError("unknown protocol: ", domainOverride)
}