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chore: add WaitReadFrom support in ssr

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This commit is contained in:
wwqgtxx
2023-05-28 22:51:26 +08:00
parent 097f3e250c
commit 8e88e0b9f5
20 changed files with 182 additions and 88 deletions
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11
transport/shadowsocks/core/cipher.go
View File

@ -7,6 +7,7 @@ import (
"sort"
"strings"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/transport/shadowsocks/shadowaead"
"github.com/Dreamacro/clash/transport/shadowsocks/shadowstream"
)
@ -21,7 +22,7 @@ type StreamConnCipher interface {
}
type PacketConnCipher interface {
PacketConn(net.PacketConn) net.PacketConn
PacketConn(N.EnhancePacketConn) N.EnhancePacketConn
}
// ErrCipherNotSupported occurs when a cipher is not supported (likely because of security concerns).
@ -128,7 +129,7 @@ type AeadCipher struct {
}
func (aead *AeadCipher) StreamConn(c net.Conn) net.Conn { return shadowaead.NewConn(c, aead) }
func (aead *AeadCipher) PacketConn(c net.PacketConn) net.PacketConn {
func (aead *AeadCipher) PacketConn(c N.EnhancePacketConn) N.EnhancePacketConn {
return shadowaead.NewPacketConn(c, aead)
}
@ -139,7 +140,7 @@ type StreamCipher struct {
}
func (ciph *StreamCipher) StreamConn(c net.Conn) net.Conn { return shadowstream.NewConn(c, ciph) }
func (ciph *StreamCipher) PacketConn(c net.PacketConn) net.PacketConn {
func (ciph *StreamCipher) PacketConn(c N.EnhancePacketConn) N.EnhancePacketConn {
return shadowstream.NewPacketConn(c, ciph)
}
@ -147,8 +148,8 @@ func (ciph *StreamCipher) PacketConn(c net.PacketConn) net.PacketConn {
type dummy struct{}
func (dummy) StreamConn(c net.Conn) net.Conn { return c }
func (dummy) PacketConn(c net.PacketConn) net.PacketConn { return c }
func (dummy) StreamConn(c net.Conn) net.Conn { return c }
func (dummy) PacketConn(c N.EnhancePacketConn) N.EnhancePacketConn { return c }
// key-derivation function from original Shadowsocks
func Kdf(password string, keyLen int) []byte {

30
transport/shadowsocks/shadowaead/packet.go
View File

@ -6,6 +6,7 @@ import (
"io"
"net"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/common/pool"
)
@ -57,15 +58,15 @@ func Unpack(dst, pkt []byte, ciph Cipher) ([]byte, error) {
}
type PacketConn struct {
net.PacketConn
N.EnhancePacketConn
Cipher
}
const maxPacketSize = 64 * 1024
// NewPacketConn wraps a net.PacketConn with cipher
func NewPacketConn(c net.PacketConn, ciph Cipher) *PacketConn {
return &PacketConn{PacketConn: c, Cipher: ciph}
// NewPacketConn wraps an N.EnhancePacketConn with cipher
func NewPacketConn(c N.EnhancePacketConn, ciph Cipher) *PacketConn {
return &PacketConn{EnhancePacketConn: c, Cipher: ciph}
}
// WriteTo encrypts b and write to addr using the embedded PacketConn.
@ -76,13 +77,13 @@ func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
if err != nil {
return 0, err
}
_, err = c.PacketConn.WriteTo(buf, addr)
_, err = c.EnhancePacketConn.WriteTo(buf, addr)
return len(b), err
}
// ReadFrom reads from the embedded PacketConn and decrypts into b.
func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
n, addr, err := c.PacketConn.ReadFrom(b)
n, addr, err := c.EnhancePacketConn.ReadFrom(b)
if err != nil {
return n, addr, err
}
@ -93,3 +94,20 @@ func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
copy(b, bb)
return len(bb), addr, err
}
func (c *PacketConn) WaitReadFrom() (data []byte, put func(), addr net.Addr, err error) {
data, put, addr, err = c.EnhancePacketConn.WaitReadFrom()
if err != nil {
return
}
data, err = Unpack(data[c.Cipher.SaltSize():], data, c)
if err != nil {
if put != nil {
put()
}
data = nil
put = nil
return
}
return
}

30
transport/shadowsocks/shadowstream/packet.go
View File

@ -6,6 +6,7 @@ import (
"io"
"net"
N "github.com/Dreamacro/clash/common/net"
"github.com/Dreamacro/clash/common/pool"
)
@ -43,13 +44,13 @@ func Unpack(dst, pkt []byte, s Cipher) ([]byte, error) {
}
type PacketConn struct {
net.PacketConn
N.EnhancePacketConn
Cipher
}
// NewPacketConn wraps a net.PacketConn with stream cipher encryption/decryption.
func NewPacketConn(c net.PacketConn, ciph Cipher) *PacketConn {
return &PacketConn{PacketConn: c, Cipher: ciph}
// NewPacketConn wraps an N.EnhancePacketConn with stream cipher encryption/decryption.
func NewPacketConn(c N.EnhancePacketConn, ciph Cipher) *PacketConn {
return &PacketConn{EnhancePacketConn: c, Cipher: ciph}
}
const maxPacketSize = 64 * 1024
@ -61,12 +62,12 @@ func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
if err != nil {
return 0, err
}
_, err = c.PacketConn.WriteTo(buf, addr)
_, err = c.EnhancePacketConn.WriteTo(buf, addr)
return len(b), err
}
func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
n, addr, err := c.PacketConn.ReadFrom(b)
n, addr, err := c.EnhancePacketConn.ReadFrom(b)
if err != nil {
return n, addr, err
}
@ -77,3 +78,20 @@ func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) {
copy(b, bb)
return len(bb), addr, err
}
func (c *PacketConn) WaitReadFrom() (data []byte, put func(), addr net.Addr, err error) {
data, put, addr, err = c.EnhancePacketConn.WaitReadFrom()
if err != nil {
return
}
data, err = Unpack(data[c.IVSize():], data, c)
if err != nil {
if put != nil {
put()
}
data = nil
put = nil
return
}
return
}