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Code Issues Releases Wiki Activity

remove shadowsosks ota (#238)

Browse Source 
* remove shadowsosks ota

* remove unused buf.Reader
This commit is contained in:
Kslr 2020-10-02 16:13:31 +08:00 committed by GitHub
parent dcf368bd93
commit 9f344fa1c9
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 62 additions and 456 deletions
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13
infra/conf/shadowsocks.go
View File

@ -39,7 +39,6 @@ type ShadowsocksServerConfig struct {
UDP bool `json:"udp"` UDP bool `json:"udp"`
Level byte `json:"level"` Level byte `json:"level"`
Email string `json:"email"` Email string `json:"email"`
OTA *bool `json:"ota"`
NetworkList *NetworkList `json:"network"` NetworkList *NetworkList `json:"network"`
} }
@ -53,14 +52,6 @@ func (v *ShadowsocksServerConfig) Build() (proto.Message, error) {
} }
account := &shadowsocks.Account{ account := &shadowsocks.Account{
Password: v.Password, Password: v.Password,
Ota: shadowsocks.Account_Auto,
}
if v.OTA != nil {
if *v.OTA {
account.Ota = shadowsocks.Account_Enabled
} else {
account.Ota = shadowsocks.Account_Disabled
}
} }
account.CipherType = cipherFromString(v.Cipher) account.CipherType = cipherFromString(v.Cipher)
if account.CipherType == shadowsocks.CipherType_UNKNOWN { if account.CipherType == shadowsocks.CipherType_UNKNOWN {
@ -110,10 +101,6 @@ func (v *ShadowsocksClientConfig) Build() (proto.Message, error) {
} }
account := &shadowsocks.Account{ account := &shadowsocks.Account{
Password: server.Password, Password: server.Password,
Ota: shadowsocks.Account_Enabled,
}
if !server.Ota {
account.Ota = shadowsocks.Account_Disabled
} }
account.CipherType = cipherFromString(server.Cipher) account.CipherType = cipherFromString(server.Cipher)
if account.CipherType == shadowsocks.CipherType_UNKNOWN { if account.CipherType == shadowsocks.CipherType_UNKNOWN {

6
proxy/shadowsocks/client.go
View File

@ -90,16 +90,12 @@ func (c *Client) Process(ctx context.Context, link *transport.Link, dialer inter
} }
user := server.PickUser() user := server.PickUser()
account, ok := user.Account.(*MemoryAccount) _, ok := user.Account.(*MemoryAccount)
if !ok { if !ok {
return newError("user account is not valid") return newError("user account is not valid")
} }
request.User = user request.User = user
if account.OneTimeAuth == Account_Auto || account.OneTimeAuth == Account_Enabled {
request.Option |= RequestOptionOneTimeAuth
}
sessionPolicy := c.policyManager.ForLevel(user.Level) sessionPolicy := c.policyManager.ForLevel(user.Level)
ctx, cancel := context.WithCancel(ctx) ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle) timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)

2
proxy/shadowsocks/config.go
View File

@ -21,7 +21,6 @@ import (
type MemoryAccount struct { type MemoryAccount struct {
Cipher Cipher Cipher Cipher
Key []byte Key []byte
OneTimeAuth Account_OneTimeAuth
} }
// Equals implements protocol.Account.Equals(). // Equals implements protocol.Account.Equals().
@ -90,7 +89,6 @@ func (a *Account) AsAccount() (protocol.Account, error) {
return &MemoryAccount{ return &MemoryAccount{
Cipher: cipher, Cipher: cipher,
Key: passwordToCipherKey([]byte(a.Password), cipher.KeySize()), Key: passwordToCipherKey([]byte(a.Password), cipher.KeySize()),
OneTimeAuth: a.Ota,
}, nil }, nil
} }

184
proxy/shadowsocks/config.pb.go
View File

@ -94,63 +94,13 @@ func (CipherType) EnumDescriptor() ([]byte, []int) {
return file_proxy_shadowsocks_config_proto_rawDescGZIP(), []int{0} return file_proxy_shadowsocks_config_proto_rawDescGZIP(), []int{0}
} }
type Account_OneTimeAuth int32
const (
Account_Auto Account_OneTimeAuth = 0
Account_Disabled Account_OneTimeAuth = 1
Account_Enabled Account_OneTimeAuth = 2
)
// Enum value maps for Account_OneTimeAuth.
var (
Account_OneTimeAuth_name = map[int32]string{
0: "Auto",
1: "Disabled",
2: "Enabled",
}
Account_OneTimeAuth_value = map[string]int32{
"Auto": 0,
"Disabled": 1,
"Enabled": 2,
}
)
func (x Account_OneTimeAuth) Enum() *Account_OneTimeAuth {
p := new(Account_OneTimeAuth)
*p = x
return p
}
func (x Account_OneTimeAuth) String() string {
return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
}
func (Account_OneTimeAuth) Descriptor() protoreflect.EnumDescriptor {
return file_proxy_shadowsocks_config_proto_enumTypes[1].Descriptor()
}
func (Account_OneTimeAuth) Type() protoreflect.EnumType {
return &file_proxy_shadowsocks_config_proto_enumTypes[1]
}
func (x Account_OneTimeAuth) Number() protoreflect.EnumNumber {
return protoreflect.EnumNumber(x)
}
// Deprecated: Use Account_OneTimeAuth.Descriptor instead.
func (Account_OneTimeAuth) EnumDescriptor() ([]byte, []int) {
return file_proxy_shadowsocks_config_proto_rawDescGZIP(), []int{0, 0}
}
type Account struct { type Account struct {
state protoimpl.MessageState state protoimpl.MessageState
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields unknownFields protoimpl.UnknownFields
Password string `protobuf:"bytes,1,opt,name=password,proto3" json:"password,omitempty"` Password string `protobuf:"bytes,1,opt,name=password,proto3" json:"password,omitempty"`
CipherType CipherType `protobuf:"varint,2,opt,name=cipher_type,json=cipherType,proto3,enum=v2ray.core.proxy.shadowsocks.CipherType" json:"cipher_type,omitempty"` CipherType CipherType `protobuf:"varint,2,opt,name=cipher_type,json=cipherType,proto3,enum=v2ray.core.proxy.shadowsocks.CipherType" json:"cipher_type,omitempty"`
Ota Account_OneTimeAuth `protobuf:"varint,3,opt,name=ota,proto3,enum=v2ray.core.proxy.shadowsocks.Account_OneTimeAuth" json:"ota,omitempty"`
} }
func (x *Account) Reset() { func (x *Account) Reset() {
@ -199,13 +149,6 @@ func (x *Account) GetCipherType() CipherType {
return CipherType_UNKNOWN return CipherType_UNKNOWN
} }
func (x *Account) GetOta() Account_OneTimeAuth {
if x != nil {
return x.Ota
}
return Account_Auto
}
type ServerConfig struct { type ServerConfig struct {
state protoimpl.MessageState state protoimpl.MessageState
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
@ -333,54 +276,47 @@ var file_proxy_shadowsocks_config_proto_rawDesc = []byte{
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0x0a, 0x11, 0x43, 0x48, 0x41, 0x43, 0x48, 0x41, 0x32, 0x30, 0x5f, 0x50, 0x4f, 0x4c, 0x59, 0x31, 0x2e, 0x53, 0x68, 0x61, 0x64, 0x6f, 0x77, 0x73, 0x6f, 0x63, 0x6b, 0x73, 0x62, 0x06, 0x70, 0x72,
0x33, 0x30, 0x35, 0x10, 0x07, 0x12, 0x08, 0x0a, 0x04, 0x4e, 0x4f, 0x4e, 0x45, 0x10, 0x08, 0x42, 0x6f, 0x74, 0x6f, 0x33,
0x65, 0x0a, 0x20, 0x63, 0x6f, 0x6d, 0x2e, 0x76, 0x32, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x72,
0x65, 0x2e, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x73, 0x68, 0x61, 0x64, 0x6f, 0x77, 0x73, 0x6f,
0x63, 0x6b, 0x73, 0x50, 0x01, 0x5a, 0x20, 0x76, 0x32, 0x72, 0x61, 0x79, 0x2e, 0x63, 0x6f, 0x6d,
0x2f, 0x63, 0x6f, 0x72, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x78, 0x79, 0x2f, 0x73, 0x68, 0x61, 0x64,
0x6f, 0x77, 0x73, 0x6f, 0x63, 0x6b, 0x73, 0xaa, 0x02, 0x1c, 0x56, 0x32, 0x52, 0x61, 0x79, 0x2e,
0x43, 0x6f, 0x72, 0x65, 0x2e, 0x50, 0x72, 0x6f, 0x78, 0x79, 0x2e, 0x53, 0x68, 0x61, 0x64, 0x6f,
0x77, 0x73, 0x6f, 0x63, 0x6b, 0x73, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
} }
var ( var (
@ -395,29 +331,27 @@ func file_proxy_shadowsocks_config_proto_rawDescGZIP() []byte {
return file_proxy_shadowsocks_config_proto_rawDescData return file_proxy_shadowsocks_config_proto_rawDescData
} }
var file_proxy_shadowsocks_config_proto_enumTypes = make([]protoimpl.EnumInfo, 2) var file_proxy_shadowsocks_config_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
var file_proxy_shadowsocks_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3) var file_proxy_shadowsocks_config_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
var file_proxy_shadowsocks_config_proto_goTypes = []interface{}{ var file_proxy_shadowsocks_config_proto_goTypes = []interface{}{
(CipherType)(0), // 0: v2ray.core.proxy.shadowsocks.CipherType (CipherType)(0), // 0: v2ray.core.proxy.shadowsocks.CipherType
(Account_OneTimeAuth)(0), // 1: v2ray.core.proxy.shadowsocks.Account.OneTimeAuth (*Account)(nil), // 1: v2ray.core.proxy.shadowsocks.Account
(*Account)(nil), // 2: v2ray.core.proxy.shadowsocks.Account (*ServerConfig)(nil), // 2: v2ray.core.proxy.shadowsocks.ServerConfig
(*ServerConfig)(nil), // 3: v2ray.core.proxy.shadowsocks.ServerConfig (*ClientConfig)(nil), // 3: v2ray.core.proxy.shadowsocks.ClientConfig
(*ClientConfig)(nil), // 4: v2ray.core.proxy.shadowsocks.ClientConfig (*protocol.User)(nil), // 4: v2ray.core.common.protocol.User
(*protocol.User)(nil), // 5: v2ray.core.common.protocol.User (net.Network)(0), // 5: v2ray.core.common.net.Network
(net.Network)(0), // 6: v2ray.core.common.net.Network (*protocol.ServerEndpoint)(nil), // 6: v2ray.core.common.protocol.ServerEndpoint
(*protocol.ServerEndpoint)(nil), // 7: v2ray.core.common.protocol.ServerEndpoint
} }
var file_proxy_shadowsocks_config_proto_depIdxs = []int32{ var file_proxy_shadowsocks_config_proto_depIdxs = []int32{
0, // 0: v2ray.core.proxy.shadowsocks.Account.cipher_type:type_name -> v2ray.core.proxy.shadowsocks.CipherType 0, // 0: v2ray.core.proxy.shadowsocks.Account.cipher_type:type_name -> v2ray.core.proxy.shadowsocks.CipherType
1, // 1: v2ray.core.proxy.shadowsocks.Account.ota:type_name -> v2ray.core.proxy.shadowsocks.Account.OneTimeAuth 4, // 1: v2ray.core.proxy.shadowsocks.ServerConfig.user:type_name -> v2ray.core.common.protocol.User
5, // 2: v2ray.core.proxy.shadowsocks.ServerConfig.user:type_name -> v2ray.core.common.protocol.User 5, // 2: v2ray.core.proxy.shadowsocks.ServerConfig.network:type_name -> v2ray.core.common.net.Network
6, // 3: v2ray.core.proxy.shadowsocks.ServerConfig.network:type_name -> v2ray.core.common.net.Network 6, // 3: v2ray.core.proxy.shadowsocks.ClientConfig.server:type_name -> v2ray.core.common.protocol.ServerEndpoint
7, // 4: v2ray.core.proxy.shadowsocks.ClientConfig.server:type_name -> v2ray.core.common.protocol.ServerEndpoint 4, // [4:4] is the sub-list for method output_type
5, // [5:5] is the sub-list for method output_type 4, // [4:4] is the sub-list for method input_type
5, // [5:5] is the sub-list for method input_type 4, // [4:4] is the sub-list for extension type_name
5, // [5:5] is the sub-list for extension type_name 4, // [4:4] is the sub-list for extension extendee
5, // [5:5] is the sub-list for extension extendee 0, // [0:4] is the sub-list for field type_name
0, // [0:5] is the sub-list for field type_name
} }
func init() { file_proxy_shadowsocks_config_proto_init() } func init() { file_proxy_shadowsocks_config_proto_init() }
@ -468,7 +402,7 @@ func file_proxy_shadowsocks_config_proto_init() {
File: protoimpl.DescBuilder{ File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(), GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_proxy_shadowsocks_config_proto_rawDesc, RawDescriptor: file_proxy_shadowsocks_config_proto_rawDesc,
NumEnums: 2, NumEnums: 1,
NumMessages: 3, NumMessages: 3,
NumExtensions: 0, NumExtensions: 0,
NumServices: 0, NumServices: 0,

6
proxy/shadowsocks/config.proto
View File

@ -11,14 +11,8 @@ import "common/protocol/user.proto";
import "common/protocol/server_spec.proto"; import "common/protocol/server_spec.proto";
message Account { message Account {
enum OneTimeAuth {
Auto = 0;
Disabled = 1;
Enabled = 2;
}
string password = 1; string password = 1;
CipherType cipher_type = 2; CipherType cipher_type = 2;
OneTimeAuth ota = 3;
} }
enum CipherType { enum CipherType {

132
proxy/shadowsocks/ota.go
View File

@ -1,132 +0,0 @@
// +build !confonly
package shadowsocks
import (
"bytes"
"crypto/hmac"
"crypto/sha1"
"encoding/binary"
"io"
"v2ray.com/core/common"
"v2ray.com/core/common/buf"
"v2ray.com/core/common/bytespool"
"v2ray.com/core/common/serial"
)
const (
// AuthSize is the number of extra bytes for Shadowsocks OTA.
AuthSize = 10
)
type KeyGenerator func() []byte
type Authenticator struct {
key KeyGenerator
}
func NewAuthenticator(keygen KeyGenerator) *Authenticator {
return &Authenticator{
key: keygen,
}
}
func (v *Authenticator) Authenticate(data []byte, dest []byte) {
hasher := hmac.New(sha1.New, v.key())
common.Must2(hasher.Write(data))
res := hasher.Sum(nil)
copy(dest, res[:AuthSize])
}
func HeaderKeyGenerator(key []byte, iv []byte) func() []byte {
return func() []byte {
newKey := make([]byte, 0, len(key)+len(iv))
newKey = append(newKey, iv...)
newKey = append(newKey, key...)
return newKey
}
}
func ChunkKeyGenerator(iv []byte) func() []byte {
chunkID := uint32(0)
return func() []byte {
newKey := make([]byte, len(iv)+4)
copy(newKey, iv)
binary.BigEndian.PutUint32(newKey[len(iv):], chunkID)
chunkID++
return newKey
}
}
type ChunkReader struct {
reader io.Reader
auth *Authenticator
}
func NewChunkReader(reader io.Reader, auth *Authenticator) *ChunkReader {
return &ChunkReader{
reader: reader,
auth: auth,
}
}
func (v *ChunkReader) ReadMultiBuffer() (buf.MultiBuffer, error) {
size, err := serial.ReadUint16(v.reader)
if err != nil {
return nil, newError("failed to read size").Base(err)
}
size += AuthSize
buffer := bytespool.Alloc(int32(size))
defer bytespool.Free(buffer)
if _, err := io.ReadFull(v.reader, buffer[:size]); err != nil {
return nil, err
}
authBytes := buffer[:AuthSize]
payload := buffer[AuthSize:size]
actualAuthBytes := make([]byte, AuthSize)
v.auth.Authenticate(payload, actualAuthBytes)
if !bytes.Equal(authBytes, actualAuthBytes) {
return nil, newError("invalid auth")
}
mb := buf.MergeBytes(nil, payload)
return mb, nil
}
type ChunkWriter struct {
writer io.Writer
auth *Authenticator
buffer []byte
}
func NewChunkWriter(writer io.Writer, auth *Authenticator) *ChunkWriter {
return &ChunkWriter{
writer: writer,
auth: auth,
buffer: make([]byte, 32*1024),
}
}
// WriteMultiBuffer implements buf.Writer.
func (w *ChunkWriter) WriteMultiBuffer(mb buf.MultiBuffer) error {
defer buf.ReleaseMulti(mb)
for {
mb, payloadLen := buf.SplitBytes(mb, w.buffer[2+AuthSize:])
binary.BigEndian.PutUint16(w.buffer, uint16(payloadLen))
w.auth.Authenticate(w.buffer[2+AuthSize:2+AuthSize+payloadLen], w.buffer[2:])
if err := buf.WriteAllBytes(w.writer, w.buffer[:2+AuthSize+payloadLen]); err != nil {
return err
}
if mb.IsEmpty() {
break
}
}
return nil
}

37
proxy/shadowsocks/ota_test.go
View File

@ -1,37 +0,0 @@
package shadowsocks_test
import (
"testing"
"github.com/google/go-cmp/cmp"
"v2ray.com/core/common"
"v2ray.com/core/common/buf"
. "v2ray.com/core/proxy/shadowsocks"
)
func TestNormalChunkReading(t *testing.T) {
buffer := buf.New()
buffer.Write([]byte{0, 8, 39, 228, 69, 96, 133, 39, 254, 26, 201, 70, 11, 12, 13, 14, 15, 16, 17, 18})
reader := NewChunkReader(buffer, NewAuthenticator(ChunkKeyGenerator(
[]byte{21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36})))
payload, err := reader.ReadMultiBuffer()
common.Must(err)
if diff := cmp.Diff(payload[0].Bytes(), []byte{11, 12, 13, 14, 15, 16, 17, 18}); diff != "" {
t.Error(diff)
}
}
func TestNormalChunkWriting(t *testing.T) {
buffer := buf.New()
writer := NewChunkWriter(buffer, NewAuthenticator(ChunkKeyGenerator(
[]byte{21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36})))
b := buf.New()
b.Write([]byte{11, 12, 13, 14, 15, 16, 17, 18})
common.Must(writer.WriteMultiBuffer(buf.MultiBuffer{b}))
if diff := cmp.Diff(buffer.Bytes(), []byte{0, 8, 39, 228, 69, 96, 133, 39, 254, 26, 201, 70, 11, 12, 13, 14, 15, 16, 17, 18}); diff != "" {
t.Error(diff)
}
}

108
proxy/shadowsocks/protocol.go
View File

@ -3,7 +3,6 @@
package shadowsocks package shadowsocks
import ( import (
"bytes"
"crypto/hmac" "crypto/hmac"
"crypto/rand" "crypto/rand"
"crypto/sha256" "crypto/sha256"
@ -14,7 +13,6 @@ import (
"v2ray.com/core/common/dice" "v2ray.com/core/common/dice"
"v2ray.com/core/common" "v2ray.com/core/common"
"v2ray.com/core/common/bitmask"
"v2ray.com/core/common/buf" "v2ray.com/core/common/buf"
"v2ray.com/core/common/net" "v2ray.com/core/common/net"
"v2ray.com/core/common/protocol" "v2ray.com/core/common/protocol"
@ -22,7 +20,6 @@ import (
const ( const (
Version = 1 Version = 1
RequestOptionOneTimeAuth bitmask.Byte = 0x01
) )
var addrParser = protocol.NewAddressParser( var addrParser = protocol.NewAddressParser(
@ -73,7 +70,6 @@ func ReadTCPSession(user *protocol.MemoryUser, reader io.Reader) (*protocol.Requ
} }
br := &buf.BufferedReader{Reader: r} br := &buf.BufferedReader{Reader: r}
authenticator := NewAuthenticator(HeaderKeyGenerator(account.Key, iv))
request := &protocol.RequestHeader{ request := &protocol.RequestHeader{
Version: Version, Version: Version,
User: user, User: user,
@ -93,56 +89,13 @@ func ReadTCPSession(user *protocol.MemoryUser, reader io.Reader) (*protocol.Requ
request.Address = addr request.Address = addr
request.Port = port request.Port = port
if !account.Cipher.IsAEAD() {
if (buffer.Byte(0) & 0x10) == 0x10 {
request.Option.Set(RequestOptionOneTimeAuth)
}
if request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Disabled {
readSizeRemain -= int(buffer.Len())
DrainConnN(reader, readSizeRemain)
return nil, nil, newError("rejecting connection with OTA enabled, while server disables OTA")
}
if !request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Enabled {
readSizeRemain -= int(buffer.Len())
DrainConnN(reader, readSizeRemain)
return nil, nil, newError("rejecting connection with OTA disabled, while server enables OTA")
}
}
if request.Option.Has(RequestOptionOneTimeAuth) {
actualAuth := make([]byte, AuthSize)
authenticator.Authenticate(buffer.Bytes(), actualAuth)
_, err := buffer.ReadFullFrom(br, AuthSize)
if err != nil {
readSizeRemain -= int(buffer.Len())
DrainConnN(reader, readSizeRemain)
return nil, nil, newError("Failed to read OTA").Base(err)
}
if !bytes.Equal(actualAuth, buffer.BytesFrom(-AuthSize)) {
readSizeRemain -= int(buffer.Len())
DrainConnN(reader, readSizeRemain)
return nil, nil, newError("invalid OTA")
}
}
if request.Address == nil { if request.Address == nil {
readSizeRemain -= int(buffer.Len()) readSizeRemain -= int(buffer.Len())
DrainConnN(reader, readSizeRemain) DrainConnN(reader, readSizeRemain)
return nil, nil, newError("invalid remote address.") return nil, nil, newError("invalid remote address.")
} }
var chunkReader buf.Reader return request, br, nil
if request.Option.Has(RequestOptionOneTimeAuth) {
chunkReader = NewChunkReader(br, NewAuthenticator(ChunkKeyGenerator(iv)))
} else {
chunkReader = buf.NewReader(br)
}
return request, chunkReader, nil
} }
func DrainConnN(reader io.Reader, n int) error { func DrainConnN(reader io.Reader, n int) error {
@ -155,10 +108,6 @@ func WriteTCPRequest(request *protocol.RequestHeader, writer io.Writer) (buf.Wri
user := request.User user := request.User
account := user.Account.(*MemoryAccount) account := user.Account.(*MemoryAccount)
if account.Cipher.IsAEAD() {
request.Option.Clear(RequestOptionOneTimeAuth)
}
var iv []byte var iv []byte
if account.Cipher.IVSize() > 0 { if account.Cipher.IVSize() > 0 {
iv = make([]byte, account.Cipher.IVSize()) iv = make([]byte, account.Cipher.IVSize())
@ -179,27 +128,11 @@ func WriteTCPRequest(request *protocol.RequestHeader, writer io.Writer) (buf.Wri
return nil, newError("failed to write address").Base(err) return nil, newError("failed to write address").Base(err)
} }
if request.Option.Has(RequestOptionOneTimeAuth) {
header.SetByte(0, header.Byte(0)|0x10)
authenticator := NewAuthenticator(HeaderKeyGenerator(account.Key, iv))
authPayload := header.Bytes()
authBuffer := header.Extend(AuthSize)
authenticator.Authenticate(authPayload, authBuffer)
}
if err := w.WriteMultiBuffer(buf.MultiBuffer{header}); err != nil { if err := w.WriteMultiBuffer(buf.MultiBuffer{header}); err != nil {
return nil, newError("failed to write header").Base(err) return nil, newError("failed to write header").Base(err)
} }
var chunkWriter buf.Writer return w, nil
if request.Option.Has(RequestOptionOneTimeAuth) {
chunkWriter = NewChunkWriter(w.(io.Writer), NewAuthenticator(ChunkKeyGenerator(iv)))
} else {
chunkWriter = w
}
return chunkWriter, nil
} }
func ReadTCPResponse(user *protocol.MemoryUser, reader io.Reader) (buf.Reader, error) { func ReadTCPResponse(user *protocol.MemoryUser, reader io.Reader) (buf.Reader, error) {
@ -241,7 +174,6 @@ func EncodeUDPPacket(request *protocol.RequestHeader, payload []byte) (*buf.Buff
if ivLen > 0 { if ivLen > 0 {
common.Must2(buffer.ReadFullFrom(rand.Reader, ivLen)) common.Must2(buffer.ReadFullFrom(rand.Reader, ivLen))
} }
iv := buffer.Bytes()
if err := addrParser.WriteAddressPort(buffer, request.Address, request.Port); err != nil { if err := addrParser.WriteAddressPort(buffer, request.Address, request.Port); err != nil {
return nil, newError("failed to write address").Base(err) return nil, newError("failed to write address").Base(err)
@ -249,14 +181,6 @@ func EncodeUDPPacket(request *protocol.RequestHeader, payload []byte) (*buf.Buff
buffer.Write(payload) buffer.Write(payload)
if !account.Cipher.IsAEAD() && request.Option.Has(RequestOptionOneTimeAuth) {
authenticator := NewAuthenticator(HeaderKeyGenerator(account.Key, iv))
buffer.SetByte(ivLen, buffer.Byte(ivLen)|0x10)
authPayload := buffer.BytesFrom(ivLen)
authBuffer := buffer.Extend(AuthSize)
authenticator.Authenticate(authPayload, authBuffer)
}
if err := account.Cipher.EncodePacket(account.Key, buffer); err != nil { if err := account.Cipher.EncodePacket(account.Key, buffer); err != nil {
return nil, newError("failed to encrypt UDP payload").Base(err) return nil, newError("failed to encrypt UDP payload").Base(err)
} }
@ -284,34 +208,6 @@ func DecodeUDPPacket(user *protocol.MemoryUser, payload *buf.Buffer) (*protocol.
Command: protocol.RequestCommandUDP, Command: protocol.RequestCommandUDP,
} }
if !account.Cipher.IsAEAD() {
if (payload.Byte(0) & 0x10) == 0x10 {
request.Option |= RequestOptionOneTimeAuth
}
if request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Disabled {
return nil, nil, newError("rejecting packet with OTA enabled, while server disables OTA").AtWarning()
}
if !request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Enabled {
return nil, nil, newError("rejecting packet with OTA disabled, while server enables OTA").AtWarning()
}
if request.Option.Has(RequestOptionOneTimeAuth) {
payloadLen := payload.Len() - AuthSize
authBytes := payload.BytesFrom(payloadLen)
authenticator := NewAuthenticator(HeaderKeyGenerator(account.Key, iv))
actualAuth := make([]byte, AuthSize)
authenticator.Authenticate(payload.BytesTo(payloadLen), actualAuth)
if !bytes.Equal(actualAuth, authBytes) {
return nil, nil, newError("invalid OTA")
}
payload.Resize(0, payloadLen)
}
}
payload.SetByte(0, payload.Byte(0)&0x0F) payload.SetByte(0, payload.Byte(0)&0x0F)
addr, port, err := addrParser.ReadAddressPort(nil, payload) addr, port, err := addrParser.ReadAddressPort(nil, payload)

5
proxy/shadowsocks/protocol_test.go
View File

@ -29,7 +29,6 @@ func TestUDPEncoding(t *testing.T) {
Account: toAccount(&Account{ Account: toAccount(&Account{
Password: "shadowsocks-password", Password: "shadowsocks-password",
CipherType: CipherType_AES_128_CFB, CipherType: CipherType_AES_128_CFB,
Ota: Account_Disabled,
}), }),
}, },
} }
@ -61,7 +60,6 @@ func TestTCPRequest(t *testing.T) {
Version: Version, Version: Version,
Command: protocol.RequestCommandTCP, Command: protocol.RequestCommandTCP,
Address: net.LocalHostIP, Address: net.LocalHostIP,
Option: RequestOptionOneTimeAuth,
Port: 1234, Port: 1234,
User: &protocol.MemoryUser{ User: &protocol.MemoryUser{
Email: "love@v2ray.com", Email: "love@v2ray.com",
@ -78,7 +76,6 @@ func TestTCPRequest(t *testing.T) {
Version: Version, Version: Version,
Command: protocol.RequestCommandTCP, Command: protocol.RequestCommandTCP,
Address: net.LocalHostIPv6, Address: net.LocalHostIPv6,
Option: RequestOptionOneTimeAuth,
Port: 1234, Port: 1234,
User: &protocol.MemoryUser{ User: &protocol.MemoryUser{
Email: "love@v2ray.com", Email: "love@v2ray.com",
@ -95,7 +92,6 @@ func TestTCPRequest(t *testing.T) {
Version: Version, Version: Version,
Command: protocol.RequestCommandTCP, Command: protocol.RequestCommandTCP,
Address: net.DomainAddress("v2ray.com"), Address: net.DomainAddress("v2ray.com"),
Option: RequestOptionOneTimeAuth,
Port: 1234, Port: 1234,
User: &protocol.MemoryUser{ User: &protocol.MemoryUser{
Email: "love@v2ray.com", Email: "love@v2ray.com",
@ -157,7 +153,6 @@ func TestUDPReaderWriter(t *testing.T) {
Address: net.DomainAddress("v2ray.com"), Address: net.DomainAddress("v2ray.com"),
Port: 123, Port: 123,
User: user, User: user,
Option: RequestOptionOneTimeAuth,
}, },
}} }}

13
proxy/shadowsocks/server.go
View File

@ -90,7 +90,6 @@ func (s *Server) handlerUDPPayload(ctx context.Context, conn internet.Connection
conn.Write(data.Bytes()) conn.Write(data.Bytes())
}) })
account := s.user.Account.(*MemoryAccount)
inbound := session.InboundFromContext(ctx) inbound := session.InboundFromContext(ctx)
if inbound == nil { if inbound == nil {
panic("no inbound metadata") panic("no inbound metadata")
@ -120,18 +119,6 @@ func (s *Server) handlerUDPPayload(ctx context.Context, conn internet.Connection
continue continue
} }
if request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Disabled {
newError("client payload enables OTA but server doesn't allow it").WriteToLog(session.ExportIDToError(ctx))
payload.Release()
continue
}
if !request.Option.Has(RequestOptionOneTimeAuth) && account.OneTimeAuth == Account_Enabled {
newError("client payload disables OTA but server forces it").WriteToLog(session.ExportIDToError(ctx))
payload.Release()
continue
}
currentPacketCtx := ctx currentPacketCtx := ctx
dest := request.Destination() dest := request.Destination()
if inbound.Source.IsValid() { if inbound.Source.IsValid() {

8
proxy/shadowsocks/shadowsocks.go
View File

@ -2,14 +2,6 @@
// //
// Shadowsocks client and server are implemented as outbound and inbound respectively in V2Ray's term. // Shadowsocks client and server are implemented as outbound and inbound respectively in V2Ray's term.
// //
// Shadowsocks OTA is fully supported. By default both client and server enable OTA, but it can be optionally disabled.
//
// Supperted Ciphers:
// * AES-256-CFB
// * AES-128-CFB
// * Chacha20
// * Chacha20-IEFT
//
// R.I.P Shadowsocks // R.I.P Shadowsocks
package shadowsocks package shadowsocks

4
testing/scenarios/shadowsocks_test.go
View File

@ -35,7 +35,6 @@ func TestShadowsocksAES256TCP(t *testing.T) {
account := serial.ToTypedMessage(&shadowsocks.Account{ account := serial.ToTypedMessage(&shadowsocks.Account{
Password: "shadowsocks-password", Password: "shadowsocks-password",
CipherType: shadowsocks.CipherType_AES_256_CFB, CipherType: shadowsocks.CipherType_AES_256_CFB,
Ota: shadowsocks.Account_Enabled,
}) })
serverPort := tcp.PickPort() serverPort := tcp.PickPort()
@ -134,7 +133,6 @@ func TestShadowsocksAES128UDP(t *testing.T) {
account := serial.ToTypedMessage(&shadowsocks.Account{ account := serial.ToTypedMessage(&shadowsocks.Account{
Password: "shadowsocks-password", Password: "shadowsocks-password",
CipherType: shadowsocks.CipherType_AES_128_CFB, CipherType: shadowsocks.CipherType_AES_128_CFB,
Ota: shadowsocks.Account_Enabled,
}) })
serverPort := tcp.PickPort() serverPort := tcp.PickPort()
@ -261,7 +259,6 @@ func TestShadowsocksChacha20TCP(t *testing.T) {
account := serial.ToTypedMessage(&shadowsocks.Account{ account := serial.ToTypedMessage(&shadowsocks.Account{
Password: "shadowsocks-password", Password: "shadowsocks-password",
CipherType: shadowsocks.CipherType_CHACHA20_IETF, CipherType: shadowsocks.CipherType_CHACHA20_IETF,
Ota: shadowsocks.Account_Enabled,
}) })
serverPort := tcp.PickPort() serverPort := tcp.PickPort()
@ -749,7 +746,6 @@ func TestShadowsocksNone(t *testing.T) {
account := serial.ToTypedMessage(&shadowsocks.Account{ account := serial.ToTypedMessage(&shadowsocks.Account{
Password: "shadowsocks-password", Password: "shadowsocks-password",
CipherType: shadowsocks.CipherType_NONE, CipherType: shadowsocks.CipherType_NONE,
Ota: shadowsocks.Account_Enabled,
}) })
serverPort := tcp.PickPort() serverPort := tcp.PickPort()