vmess

package
v0.0.0-...-5f1f6bc Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Aug 3, 2023 License: AGPL-3.0 Imports: 27 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	KDFSaltConstAuthIDEncryptionKey             = "AES Auth ID Encryption"
	KDFSaltConstAEADRespHeaderLenKey            = "AEAD Resp Header Len Key"
	KDFSaltConstAEADRespHeaderLenIV             = "AEAD Resp Header Len IV"
	KDFSaltConstAEADRespHeaderPayloadKey        = "AEAD Resp Header Key"
	KDFSaltConstAEADRespHeaderPayloadIV         = "AEAD Resp Header IV"
	KDFSaltConstVMessAEADKDF                    = "VMess AEAD KDF"
	KDFSaltConstVMessHeaderPayloadAEADKey       = "VMess Header AEAD Key"
	KDFSaltConstVMessHeaderPayloadAEADIV        = "VMess Header AEAD Nonce"
	KDFSaltConstVMessHeaderPayloadLengthAEADKey = "VMess Header AEAD Key_Length"
	KDFSaltConstVMessHeaderPayloadLengthAEADIV  = "VMess Header AEAD Nonce_Length"
)
View Source 
const (
	OptionChunkStream        = 1
	OptionChunkLengthMasking = 4
	OptionGlobalPadding      = 8
)
View Source 
const (
	MaxChunkSize = 1 << 14
	MaxUDPSize   = 1 << 11
)
View Source 
const (
	IDBytesLen = 16
)
View Source 
const SeqPacketMagicAddress = "sp.packet-addr.v2fly.arpa"

Variables

View Source 
var (
	ErrInvalidMetadata = fmt.Errorf("invalid metadata")
)
View Source 
var (
	NewCipherMapper = map[Cipher]func(key []byte) (cipher.AEAD, error){
		CipherC20P1305:  NewC20P1305,
		CipherAES128GCM: NewAesGcm,
	}
)

Functions

func AuthEAuthID 

func AuthEAuthID(blk cipher.Block, eAuthID []byte, doubleCuckoo *ReplayFilter, startTimestamp int64) error

func ContainOption 

func ContainOption(options byte, option byte) bool

func DefaultIDHash 

func DefaultIDHash(key []byte) hash.Hash

func EncryptReqHeaderFromPool 

func EncryptReqHeaderFromPool(instruction []byte, cmdKey []byte) ([]byte, error)

func ExtractPacketAddr 

func ExtractPacketAddr(src []byte) (protocol.MetadataType, netip.AddrPort, error)

func GenerateChacha20Poly1305KeyFromPool 

func GenerateChacha20Poly1305KeyFromPool(b []byte) []byte

GenerateChacha20Poly1305Key generates a 32-byte key from a given 16-byte array.

func KDF 

func KDF(key []byte, path ...[]byte) []byte

func MetadataTypeToByte 

func MetadataTypeToByte(typ protocol.MetadataType) byte

func NetworkToByte 

func NetworkToByte(network string) byte

func NewAesGcm 

func NewAesGcm(key []byte) (cipher.AEAD, error)

func NewC20P1305 

func NewC20P1305(key []byte) (cipher.AEAD, error)

func NewDialer 

func NewDialer(nextDialer netproxy.Dialer, header protocol.Header) (netproxy.Dialer, error)

func NewDialerFactory 

func NewDialerFactory(proto protocol.Protocol) func(nextDialer netproxy.Dialer, header protocol.Header) (netproxy.Dialer, error)

func PacketAddrLength 

func PacketAddrLength(typ protocol.MetadataType) int

func ParseMetadataType 

func ParseMetadataType(t byte) protocol.MetadataType

func ParseNetwork 

func ParseNetwork(n byte) string

func ParsePacketAddrType 

func ParsePacketAddrType(t byte) protocol.MetadataType

func PutEAuthID 

func PutEAuthID(dst []byte, cmdKey []byte) []byte

func PutPacketAddr 

func PutPacketAddr(src []byte, addr *net.UDPAddr) error

func ReqInstructionDataFromPool 

func ReqInstructionDataFromPool(metadata Metadata) []byte

func RespHeaderFromPool 

func RespHeaderFromPool(V byte) []byte

func UDPAddrToPacketAddrLength 

func UDPAddrToPacketAddrLength(addr *net.UDPAddr) int

Types

type BytesGenerator 

type BytesGenerator func() []byte

func GenerateChunkNonce 

func GenerateChunkNonce(nonce []byte, size uint32) BytesGenerator

type ChunkSizeDecoder 

type ChunkSizeDecoder interface {
	SizeBytes() int32
	Decode([]byte) (uint16, error)
}

ChunkSizeDecoder is a utility class to decode size value from bytes.

type ChunkSizeEncoder 

type ChunkSizeEncoder interface {
	SizeBytes() int32
	Encode(uint16, []byte) []byte
}

ChunkSizeEncoder is a utility class to encode size value into bytes.

type Cipher 

type Cipher string
const (
	CipherC20P1305  Cipher = "chacha20-poly1305"
	CipherAES128GCM Cipher = "aes-128-gcm"
)

func ParseCipherFromSecurity 

func ParseCipherFromSecurity(security byte) (Cipher, error)

func (Cipher) ToSecurity 

func (c Cipher) ToSecurity() byte

type Conn 

type Conn struct {
	netproxy.Conn

	NewAEAD func(key []byte) (cipher.AEAD, error)
	// contains filtered or unexported fields
}

func NewConn 

func NewConn(conn netproxy.Conn, metadata Metadata, dialTgt string, cmdKey []byte) (c *Conn, err error)

func (*Conn) Close 

func (c *Conn) Close() error

func (*Conn) EncryptRespHeaderFromPool 

func (c *Conn) EncryptRespHeaderFromPool(header []byte) (b []byte, err error)

func (*Conn) InitContext 

func (c *Conn) InitContext(instructionData []byte) error

func (*Conn) Metadata 

func (c *Conn) Metadata() Metadata

func (*Conn) Read 

func (c *Conn) Read(b []byte) (n int, err error)

func (*Conn) ReadFrom 

func (c *Conn) ReadFrom(p []byte) (n int, addr netip.AddrPort, err error)

func (*Conn) Write 

func (c *Conn) Write(b []byte) (n int, err error)

func (*Conn) WriteReqHeader 

func (c *Conn) WriteReqHeader() (err error)

func (*Conn) WriteTo 

func (c *Conn) WriteTo(p []byte, addr string) (n int, err error)

type Dialer 

type Dialer struct {
	// contains filtered or unexported fields
}

func (*Dialer) Dial 

func (d *Dialer) Dial(network string, addr string) (c netproxy.Conn, err error)

func (*Dialer) DialTcp 

func (d *Dialer) DialTcp(addr string) (c netproxy.Conn, err error)

func (*Dialer) DialUdp 

func (d *Dialer) DialUdp(addr string) (c netproxy.PacketConn, err error)

type ID 

type ID struct {
	// contains filtered or unexported fields
}

The ID of en entity, in the form of a UUID.

func NewAlterIDs 

func NewAlterIDs(primary *ID, alterIDCount uint16) []*ID

func NewID 

func NewID(uuid uuid.UUID) *ID

NewID returns an ID with given UUID.

func (*ID) Bytes 

func (id *ID) Bytes() []byte

func (*ID) CmdKey 

func (id *ID) CmdKey() []byte

func (*ID) Equals 

func (id *ID) Equals(another *ID) bool

Equals returns true if this ID equals to the other one.

func (*ID) String 

func (id *ID) String() string

func (*ID) UUID 

func (id *ID) UUID() uuid.UUID

type IDHash 

type IDHash func(key []byte) hash.Hash

type Metadata 

type Metadata struct {
	protocol.Metadata

	Network string
	// contains filtered or unexported fields
}

func NewServerMetadata 

func NewServerMetadata(cmdKey, eAuthID []byte) *Metadata

func (*Metadata) AddrLen 

func (m *Metadata) AddrLen() int

func (*Metadata) CompleteFromInstructionData 

func (m *Metadata) CompleteFromInstructionData(instructionData []byte) (err error)

func (*Metadata) IsPacketAddr 

func (m *Metadata) IsPacketAddr() bool

func (*Metadata) PutAddr 

func (m *Metadata) PutAddr(dst []byte) (n int)

type PaddingLengthGenerator 

type PaddingLengthGenerator interface {
	MaxPaddingLen() uint16
	NextPaddingLen() uint16
}

type PlainChunkSizeParser 

type PlainChunkSizeParser struct{}

func (PlainChunkSizeParser) Decode 

func (PlainChunkSizeParser) Decode(b []byte) (uint16, error)

func (PlainChunkSizeParser) Encode 

func (PlainChunkSizeParser) Encode(size uint16, b []byte) []byte

func (PlainChunkSizeParser) SizeBytes 

func (PlainChunkSizeParser) SizeBytes() int32

type PlainPaddingGenerator 

type PlainPaddingGenerator struct {
	PaddingLengthGenerator
}

func (PlainPaddingGenerator) MaxPaddingLen 

func (PlainPaddingGenerator) MaxPaddingLen() uint16

func (PlainPaddingGenerator) NextPaddingLen 

func (PlainPaddingGenerator) NextPaddingLen() uint16

type ReplayFilter 

type ReplayFilter struct {
	// contains filtered or unexported fields
}

ReplayFilter check for replay attacks.

func NewReplayFilter 

func NewReplayFilter(interval int64) *ReplayFilter

NewReplayFilter create a new filter with specifying the expiration time interval in seconds.

func (*ReplayFilter) Check 

func (filter *ReplayFilter) Check(sum []byte) bool

Check determine if there are duplicate records.

func (*ReplayFilter) Interval 

func (filter *ReplayFilter) Interval() int64

Interval in second for expiration time for duplicate records.

type ShakeSizeParser 

type ShakeSizeParser struct {
	// contains filtered or unexported fields
}

func NewShakeSizeParser 

func NewShakeSizeParser(nonce []byte) *ShakeSizeParser

func (*ShakeSizeParser) Decode 

func (s *ShakeSizeParser) Decode(b []byte) (uint16, error)

func (*ShakeSizeParser) Encode 

func (s *ShakeSizeParser) Encode(size uint16, b []byte) []byte

func (*ShakeSizeParser) MaxPaddingLen 

func (s *ShakeSizeParser) MaxPaddingLen() uint16

func (*ShakeSizeParser) NextPaddingLen 

func (s *ShakeSizeParser) NextPaddingLen() uint16

func (*ShakeSizeParser) SizeBytes 

func (*ShakeSizeParser) SizeBytes() int32

Source Files

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