lzhr/v2fly
1
0
Fork 0
mirror of https://github.com/v2fly/v2ray-core.git synced 2024-06-25 17:05:23 +00:00
Code Issues Releases Wiki Activity

support none cipher in shadowsocks

Browse Source
This commit is contained in:
Darien Raymond 2017-11-29 22:19:04 +01:00
parent fd8db49dc9
commit cb68575444
No known key found for this signature in database
GPG Key ID: 7251FFA14BB18169
4 changed files with 104 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
proxy/shadowsocks/config.go
View File

@ -44,8 +44,8 @@ func createChacha20Poly1305(key []byte) cipher.AEAD {
return chacha20
}
func (v *Account) GetCipher() (Cipher, error) {
switch v.CipherType {
func (a *Account) GetCipher() (Cipher, error) {
switch a.CipherType {
case CipherType_AES_128_CFB:
return &AesCfb{KeyBytes: 16}, nil
case CipherType_AES_256_CFB:
@ -72,31 +72,25 @@ func (v *Account) GetCipher() (Cipher, error) {
IVBytes: 32,
AEADAuthCreator: createChacha20Poly1305,
}, nil
case CipherType_NONE:
return NoneCipher{}, nil
default:
return nil, newError("Unsupported cipher.")
}
}
func (v *Account) AsAccount() (protocol.Account, error) {
cipher, err := v.GetCipher()
func (a *Account) AsAccount() (protocol.Account, error) {
cipher, err := a.GetCipher()
if err != nil {
return nil, newError("failed to get cipher").Base(err)
}
return &ShadowsocksAccount{
Cipher: cipher,
Key: v.GetCipherKey(),
OneTimeAuth: v.Ota,
Key: PasswordToCipherKey([]byte(a.Password), cipher.KeySize()),
OneTimeAuth: a.Ota,
}, nil
}
func (v *Account) GetCipherKey() []byte {
ct, err := v.GetCipher()
if err != nil {
return nil
}
return PasswordToCipherKey(v.Password, ct.KeySize())
}
type Cipher interface {
KeySize() int
IVSize() int
@ -261,17 +255,40 @@ func (v *ChaCha20) DecodePacket(key []byte, b *buf.Buffer) error {
return nil
}
func PasswordToCipherKey(password string, keySize int) []byte {
pwdBytes := []byte(password)
type NoneCipher struct{}
func (NoneCipher) KeySize() int { return 0 }
func (NoneCipher) IVSize() int { return 0 }
func (NoneCipher) IsAEAD() bool {
return true // to avoid OTA
}
func (NoneCipher) NewDecryptionReader(key []byte, iv []byte, reader io.Reader) (buf.Reader, error) {
return buf.NewReader(reader), nil
}
func (NoneCipher) NewEncryptionWriter(key []byte, iv []byte, writer io.Writer) (buf.Writer, error) {
return buf.NewWriter(writer), nil
}
func (NoneCipher) EncodePacket(key []byte, b *buf.Buffer) error {
return nil
}
func (NoneCipher) DecodePacket(key []byte, b *buf.Buffer) error {
return nil
}
func PasswordToCipherKey(password []byte, keySize int) []byte {
key := make([]byte, 0, keySize)
md5Sum := md5.Sum(pwdBytes)
md5Sum := md5.Sum(password)
key = append(key, md5Sum[:]...)
for len(key) < keySize {
md5Hash := md5.New()
md5Hash.Write(md5Sum[:])
md5Hash.Write(pwdBytes)
md5Hash.Write(password)
md5Hash.Sum(md5Sum[:0])
key = append(key, md5Sum[:]...)

65
proxy/shadowsocks/config.pb.go
View File

@ -28,6 +28,7 @@ const (
CipherType_AES_128_GCM CipherType = 5
CipherType_AES_256_GCM CipherType = 6
CipherType_CHACHA20_POLY1305 CipherType = 7
CipherType_NONE CipherType = 8
)
var CipherType_name = map[int32]string{
@ -39,6 +40,7 @@ var CipherType_name = map[int32]string{
5: "AES_128_GCM",
6: "AES_256_GCM",
7: "CHACHA20_POLY1305",
8: "NONE",
}
var CipherType_value = map[string]int32{
"UNKNOWN": 0,
@ -49,6 +51,7 @@ var CipherType_value = map[string]int32{
"AES_128_GCM": 5,
"AES_256_GCM": 6,
"CHACHA20_POLY1305": 7,
"NONE": 8,
}
func (x CipherType) String() string {
@ -163,35 +166,35 @@ func init() {
func init() { proto.RegisterFile("v2ray.com/core/proxy/shadowsocks/config.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 470 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x91, 0xd1, 0x8e, 0xd2, 0x40,
0x14, 0x86, 0xb7, 0x80, 0x80, 0xa7, 0xa8, 0xdd, 0x49, 0x4c, 0x08, 0xd9, 0x44, 0xc2, 0x15, 0x6e,
0xe2, 0x14, 0xba, 0xae, 0xf1, 0xb6, 0x8c, 0xac, 0xbb, 0x51, 0x81, 0x14, 0x56, 0xa3, 0x37, 0x4d,
0x77, 0x3a, 0x4a, 0x23, 0xed, 0x4c, 0x66, 0xda, 0x5d, 0xfb, 0x20, 0xbe, 0x84, 0x6f, 0xe6, 0x5b,
0x98, 0x4e, 0x81, 0x6d, 0xbc, 0x60, 0xef, 0x7a, 0x4e, 0xff, 0xff, 0xef, 0x7f, 0xbe, 0xc2, 0xab,
0x5b, 0x47, 0x06, 0x39, 0xa6, 0x3c, 0xb6, 0x29, 0x97, 0xcc, 0x16, 0x92, 0xff, 0xca, 0x6d, 0xb5,
0x0e, 0x42, 0x7e, 0xa7, 0x38, 0xfd, 0xa9, 0x6c, 0xca, 0x93, 0xef, 0xd1, 0x0f, 0x2c, 0x24, 0x4f,
0x39, 0x3a, 0xd9, 0xc9, 0x25, 0xc3, 0x5a, 0x8a, 0x2b, 0xd2, 0xde, 0xcb, 0xff, 0xc2, 0x28, 0x8f,
0x63, 0x9e, 0xd8, 0xda, 0x4a, 0xf9, 0xc6, 0xce, 0x14, 0x93, 0x65, 0x50, 0x6f, 0xf4, 0x80, 0x54,
0x31, 0x79, 0xcb, 0xa4, 0xaf, 0x04, 0xa3, 0xa5, 0x63, 0xf0, 0xd7, 0x80, 0x96, 0x4b, 0x29, 0xcf,
0x92, 0x14, 0xf5, 0xa0, 0x2d, 0x02, 0xa5, 0xee, 0xb8, 0x0c, 0xbb, 0x46, 0xdf, 0x18, 0x3e, 0xf6,
0xf6, 0x33, 0xba, 0x02, 0x93, 0x46, 0x62, 0xcd, 0xa4, 0x9f, 0xe6, 0x82, 0x75, 0x6b, 0x7d, 0x63,
0xf8, 0xd4, 0x19, 0xe2, 0x43, 0xc5, 0x31, 0xd1, 0x86, 0x55, 0x2e, 0x98, 0x07, 0x74, 0xff, 0x8c,
0x08, 0xd4, 0x79, 0x1a, 0x74, 0xeb, 0x3a, 0x62, 0x7c, 0x38, 0x62, 0x5b, 0x0d, 0xcf, 0x13, 0xb6,
0x8a, 0x62, 0xe6, 0x66, 0xe9, 0xda, 0x2b, 0xdc, 0x03, 0x07, 0xcc, 0xca, 0x0e, 0xb5, 0xa1, 0xe1,
0x66, 0x29, 0xb7, 0x8e, 0x50, 0x07, 0xda, 0xef, 0x22, 0x15, 0xdc, 0x6c, 0x58, 0x68, 0x19, 0xc8,
0x84, 0xd6, 0x34, 0x29, 0x87, 0xda, 0x80, 0x41, 0x67, 0xa9, 0x01, 0x10, 0x0d, 0x1f, 0xbd, 0x00,
0x33, 0x0b, 0x85, 0xcf, 0x4a, 0x81, 0x3e, 0xb9, 0xed, 0x41, 0x16, 0x8a, 0xad, 0x05, 0xbd, 0x86,
0x46, 0x01, 0x57, 0x5f, 0x6b, 0x3a, 0xfd, 0x6a, 0xd5, 0x92, 0x2c, 0xde, 0x91, 0xc5, 0xd7, 0x8a,
0x49, 0x4f, 0xab, 0x07, 0x1e, 0x74, 0xc8, 0x26, 0x62, 0x49, 0xba, 0xfd, 0xcc, 0x04, 0x9a, 0x25,
0xf7, 0xae, 0xd1, 0xaf, 0x0f, 0x4d, 0xe7, 0xf4, 0x50, 0x4e, 0x59, 0x70, 0x9a, 0x84, 0x82, 0x47,
0x49, 0xea, 0x6d, 0x9d, 0xa7, 0xbf, 0x0d, 0x80, 0x7b, 0x9c, 0xc5, 0x59, 0xd7, 0xb3, 0x0f, 0xb3,
0xf9, 0x97, 0x99, 0x75, 0x84, 0x9e, 0x81, 0xe9, 0x4e, 0x97, 0xfe, 0xd8, 0x79, 0xeb, 0x93, 0x8b,
0x89, 0x65, 0xec, 0x16, 0xce, 0xf9, 0x1b, 0xbd, 0xa8, 0x15, 0x4c, 0xc8, 0xa5, 0x4b, 0x2e, 0x5d,
0x67, 0x64, 0xd5, 0xd1, 0x31, 0x3c, 0xd9, 0x4d, 0xfe, 0xd5, 0x74, 0x75, 0x61, 0x35, 0xaa, 0x11,
0xef, 0xc9, 0x27, 0xeb, 0x51, 0x35, 0xa2, 0x58, 0x34, 0xd1, 0x73, 0x38, 0xde, 0x9b, 0x16, 0xf3,
0x8f, 0x5f, 0xc7, 0x67, 0xa3, 0x73, 0xab, 0x35, 0x59, 0x40, 0x9f, 0xf2, 0xf8, 0xe0, 0x3f, 0x5c,
0x18, 0xdf, 0xcc, 0xca, 0xf8, 0xa7, 0x76, 0xf2, 0xd9, 0xf1, 0x82, 0x1c, 0x93, 0x42, 0xbd, 0xd0,
0xea, 0xe5, 0xfd, 0xeb, 0x9b, 0xa6, 0x46, 0x71, 0xf6, 0x2f, 0x00, 0x00, 0xff, 0xff, 0x37, 0x7d,
0x8e, 0xab, 0x43, 0x03, 0x00, 0x00,
// 477 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x91, 0x51, 0x8f, 0x93, 0x40,
0x14, 0x85, 0x97, 0xb6, 0xb6, 0xf5, 0x52, 0x95, 0x9d, 0xc4, 0xa4, 0x69, 0x36, 0xb1, 0xe9, 0x53,
0xdd, 0xc4, 0xa1, 0x65, 0x5d, 0xe3, 0x2b, 0x45, 0xd6, 0xdd, 0xa8, 0xb4, 0xa1, 0x5d, 0x8d, 0xbe,
0x10, 0x76, 0x18, 0x2d, 0xb1, 0x30, 0x93, 0x19, 0xd8, 0x95, 0x5f, 0xe3, 0xbb, 0xff, 0xcc, 0x7f,
0x61, 0x18, 0xda, 0x2e, 0xf1, 0xa1, 0xfb, 0xc6, 0xbd, 0x9c, 0x73, 0x38, 0xf7, 0x03, 0x5e, 0xdd,
0x5a, 0x22, 0x2c, 0x30, 0x61, 0x89, 0x49, 0x98, 0xa0, 0x26, 0x17, 0xec, 0x57, 0x61, 0xca, 0x75,
0x18, 0xb1, 0x3b, 0xc9, 0xc8, 0x4f, 0x69, 0x12, 0x96, 0x7e, 0x8f, 0x7f, 0x60, 0x2e, 0x58, 0xc6,
0xd0, 0xc9, 0x4e, 0x2e, 0x28, 0x56, 0x52, 0x5c, 0x93, 0x0e, 0x5e, 0xfe, 0x17, 0x46, 0x58, 0x92,
0xb0, 0xd4, 0x54, 0x56, 0xc2, 0x36, 0x66, 0x2e, 0xa9, 0xa8, 0x82, 0x06, 0x93, 0x07, 0xa4, 0x92,
0x8a, 0x5b, 0x2a, 0x02, 0xc9, 0x29, 0xa9, 0x1c, 0xa3, 0xbf, 0x1a, 0x74, 0x6c, 0x42, 0x58, 0x9e,
0x66, 0x68, 0x00, 0x5d, 0x1e, 0x4a, 0x79, 0xc7, 0x44, 0xd4, 0xd7, 0x86, 0xda, 0xf8, 0xb1, 0xbf,
0x9f, 0xd1, 0x15, 0xe8, 0x24, 0xe6, 0x6b, 0x2a, 0x82, 0xac, 0xe0, 0xb4, 0xdf, 0x18, 0x6a, 0xe3,
0xa7, 0xd6, 0x18, 0x1f, 0x2a, 0x8e, 0x1d, 0x65, 0x58, 0x15, 0x9c, 0xfa, 0x40, 0xf6, 0xcf, 0xc8,
0x81, 0x26, 0xcb, 0xc2, 0x7e, 0x53, 0x45, 0x4c, 0x0f, 0x47, 0x6c, 0xab, 0xe1, 0x79, 0x4a, 0x57,
0x71, 0x42, 0xed, 0x3c, 0x5b, 0xfb, 0xa5, 0x7b, 0x64, 0x81, 0x5e, 0xdb, 0xa1, 0x2e, 0xb4, 0xec,
0x3c, 0x63, 0xc6, 0x11, 0xea, 0x41, 0xf7, 0x5d, 0x2c, 0xc3, 0x9b, 0x0d, 0x8d, 0x0c, 0x0d, 0xe9,
0xd0, 0x71, 0xd3, 0x6a, 0x68, 0x8c, 0x28, 0xf4, 0x96, 0x0a, 0x80, 0xa3, 0xe0, 0xa3, 0x17, 0xa0,
0xe7, 0x11, 0x0f, 0x68, 0x25, 0x50, 0x27, 0x77, 0x7d, 0xc8, 0x23, 0xbe, 0xb5, 0xa0, 0xd7, 0xd0,
0x2a, 0xe1, 0xaa, 0x6b, 0x75, 0x6b, 0x58, 0xaf, 0x5a, 0x91, 0xc5, 0x3b, 0xb2, 0xf8, 0x5a, 0x52,
0xe1, 0x2b, 0xf5, 0xc8, 0x87, 0x9e, 0xb3, 0x89, 0x69, 0x9a, 0x6d, 0x3f, 0x33, 0x83, 0x76, 0xc5,
0xbd, 0xaf, 0x0d, 0x9b, 0x63, 0xdd, 0x3a, 0x3d, 0x94, 0x53, 0x15, 0x74, 0xd3, 0x88, 0xb3, 0x38,
0xcd, 0xfc, 0xad, 0xf3, 0xf4, 0xb7, 0x06, 0x70, 0x8f, 0xb3, 0x3c, 0xeb, 0xda, 0xfb, 0xe0, 0xcd,
0xbf, 0x78, 0xc6, 0x11, 0x7a, 0x06, 0xba, 0xed, 0x2e, 0x83, 0xa9, 0xf5, 0x36, 0x70, 0x2e, 0x66,
0x86, 0xb6, 0x5b, 0x58, 0xe7, 0x6f, 0xd4, 0xa2, 0x51, 0x32, 0x71, 0x2e, 0x6d, 0xe7, 0xd2, 0xb6,
0x26, 0x46, 0x13, 0x1d, 0xc3, 0x93, 0xdd, 0x14, 0x5c, 0xb9, 0xab, 0x0b, 0xa3, 0x55, 0x8f, 0x78,
0xef, 0x7c, 0x32, 0x1e, 0xd5, 0x23, 0xca, 0x45, 0x1b, 0x3d, 0x87, 0xe3, 0xbd, 0x69, 0x31, 0xff,
0xf8, 0x75, 0x7a, 0x36, 0x39, 0x37, 0x3a, 0x25, 0x77, 0x6f, 0xee, 0xb9, 0x46, 0x77, 0xb6, 0x80,
0x21, 0x61, 0xc9, 0xc1, 0xbf, 0xb9, 0xd0, 0xbe, 0xe9, 0xb5, 0xf1, 0x4f, 0xe3, 0xe4, 0xb3, 0xe5,
0x87, 0x05, 0x76, 0x4a, 0xf5, 0x42, 0xa9, 0x97, 0xf7, 0xaf, 0x6f, 0xda, 0x0a, 0xca, 0xd9, 0xbf,
0x00, 0x00, 0x00, 0xff, 0xff, 0x02, 0xd5, 0x9f, 0x8c, 0x4d, 0x03, 0x00, 0x00,
}

1
proxy/shadowsocks/config.proto
View File

@ -29,6 +29,7 @@ enum CipherType {
AES_128_GCM = 5;
AES_256_GCM = 6;
CHACHA20_POLY1305 = 7;
NONE = 8;
}
message ServerConfig {

54
proxy/shadowsocks/protocol.go
View File

@ -33,11 +33,14 @@ func ReadTCPSession(user *protocol.User, reader io.Reader) (*protocol.RequestHea
defer buffer.Release()
ivLen := account.Cipher.IVSize()
if err := buffer.AppendSupplier(buf.ReadFullFrom(reader, ivLen)); err != nil {
return nil, nil, newError("failed to read IV").Base(err)
}
var iv []byte
if ivLen > 0 {
if err := buffer.AppendSupplier(buf.ReadFullFrom(reader, ivLen)); err != nil {
return nil, nil, newError("failed to read IV").Base(err)
}
iv := append([]byte(nil), buffer.BytesTo(ivLen)...)
iv = append([]byte(nil), buffer.BytesTo(ivLen)...)
}
r, err := account.Cipher.NewDecryptionReader(account.Key, iv, reader)
if err != nil {
@ -145,11 +148,14 @@ func WriteTCPRequest(request *protocol.RequestHeader, writer io.Writer) (buf.Wri
request.Option.Clear(RequestOptionOneTimeAuth)
}
iv := make([]byte, account.Cipher.IVSize())
common.Must2(rand.Read(iv))
_, err = writer.Write(iv)
if err != nil {
return nil, newError("failed to write IV")
var iv []byte
if account.Cipher.IVSize() > 0 {
iv = make([]byte, account.Cipher.IVSize())
common.Must2(rand.Read(iv))
_, err = writer.Write(iv)
if err != nil {
return nil, newError("failed to write IV")
}
}
w, err := account.Cipher.NewEncryptionWriter(account.Key, iv, writer)
@ -207,10 +213,13 @@ func ReadTCPResponse(user *protocol.User, reader io.Reader) (buf.Reader, error)
}
account := rawAccount.(*ShadowsocksAccount)
iv := make([]byte, account.Cipher.IVSize())
_, err = io.ReadFull(reader, iv)
if err != nil {
return nil, newError("failed to read IV").Base(err)
var iv []byte
if account.Cipher.IVSize() > 0 {
iv = make([]byte, account.Cipher.IVSize())
_, err = io.ReadFull(reader, iv)
if err != nil {
return nil, newError("failed to read IV").Base(err)
}
}
return account.Cipher.NewDecryptionReader(account.Key, iv, reader)
@ -224,11 +233,14 @@ func WriteTCPResponse(request *protocol.RequestHeader, writer io.Writer) (buf.Wr
}
account := rawAccount.(*ShadowsocksAccount)
iv := make([]byte, account.Cipher.IVSize())
common.Must2(rand.Read(iv))
_, err = writer.Write(iv)
if err != nil {
return nil, newError("failed to write IV.").Base(err)
var iv []byte
if account.Cipher.IVSize() > 0 {
iv = make([]byte, account.Cipher.IVSize())
common.Must2(rand.Read(iv))
_, err = writer.Write(iv)
if err != nil {
return nil, newError("failed to write IV.").Base(err)
}
}
return account.Cipher.NewEncryptionWriter(account.Key, iv, writer)
@ -244,7 +256,9 @@ func EncodeUDPPacket(request *protocol.RequestHeader, payload []byte) (*buf.Buff
buffer := buf.New()
ivLen := account.Cipher.IVSize()
common.Must(buffer.Reset(buf.ReadFullFrom(rand.Reader, ivLen)))
if ivLen > 0 {
common.Must(buffer.Reset(buf.ReadFullFrom(rand.Reader, ivLen)))
}
iv := buffer.Bytes()
switch request.Address.Family() {
@ -286,7 +300,7 @@ func DecodeUDPPacket(user *protocol.User, payload *buf.Buffer) (*protocol.Reques
var iv []byte
var authenticator *Authenticator
if !account.Cipher.IsAEAD() {
if !account.Cipher.IsAEAD() && account.Cipher.IVSize() > 0 {
// Keep track of IV as it gets removed from payload in DecodePacket.
iv = make([]byte, account.Cipher.IVSize())
copy(iv, payload.BytesTo(account.Cipher.IVSize()))