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merge address writing

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This commit is contained in:
Darien Raymond 2017-12-04 00:55:34 +01:00
parent 13ed4b8429
commit 81c4f23691
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GPG Key ID: 7251FFA14BB18169
2 changed files with 13 additions and 39 deletions
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37
proxy/shadowsocks/protocol.go
View File

@ -10,7 +10,7 @@ import (
"v2ray.com/core/common/buf"
"v2ray.com/core/common/net"
"v2ray.com/core/common/protocol"
"v2ray.com/core/common/serial"
"v2ray.com/core/proxy/socks"
)
const (
@ -165,26 +165,10 @@ func WriteTCPRequest(request *protocol.RequestHeader, writer io.Writer) (buf.Wri
header := buf.NewLocal(512)
switch request.Address.Family() {
case net.AddressFamilyIPv4:
header.AppendBytes(AddrTypeIPv4)
header.Append([]byte(request.Address.IP()))
case net.AddressFamilyIPv6:
header.AppendBytes(AddrTypeIPv6)
header.Append([]byte(request.Address.IP()))
case net.AddressFamilyDomain:
domain := request.Address.Domain()
if protocol.IsDomainTooLong(domain) {
return nil, newError("domain name too long: ", domain)
}
header.AppendBytes(AddrTypeDomain, byte(len(domain)))
common.Must(header.AppendSupplier(serial.WriteString(domain)))
default:
return nil, newError("unsupported address type: ", request.Address.Family())
if err := socks.AppendAddress(header, request.Address, request.Port); err != nil {
return nil, newError("failed to write address").Base(err)
}
common.Must(header.AppendSupplier(serial.WriteUint16(uint16(request.Port))))
if request.Option.Has(RequestOptionOneTimeAuth) {
header.SetByte(0, header.Byte(0)|0x10)
@ -261,21 +245,10 @@ func EncodeUDPPacket(request *protocol.RequestHeader, payload []byte) (*buf.Buff
}
iv := buffer.Bytes()
switch request.Address.Family() {
case net.AddressFamilyIPv4:
buffer.AppendBytes(AddrTypeIPv4)
buffer.Append([]byte(request.Address.IP()))
case net.AddressFamilyIPv6:
buffer.AppendBytes(AddrTypeIPv6)
buffer.Append([]byte(request.Address.IP()))
case net.AddressFamilyDomain:
buffer.AppendBytes(AddrTypeDomain, byte(len(request.Address.Domain())))
buffer.Append([]byte(request.Address.Domain()))
default:
return nil, newError("unsupported address type: ", request.Address.Family()).AtError()
if err := socks.AppendAddress(buffer, request.Address, request.Port); err != nil {
return nil, newError("failed to write address").Base(err)
}
common.Must(buffer.AppendSupplier(serial.WriteUint16(uint16(request.Port))))
buffer.Append(payload)
if !account.Cipher.IsAEAD() && request.Option.Has(RequestOptionOneTimeAuth) {

15
proxy/socks/protocol.go
View File

@ -245,19 +245,20 @@ func writeSocks5AuthenticationResponse(writer io.Writer, version byte, auth byte
return err
}
func appendAddress(buffer *buf.Buffer, address net.Address, port net.Port) error {
// AppendAddress appends Socks address into the given buffer.
func AppendAddress(buffer *buf.Buffer, address net.Address, port net.Port) error {
switch address.Family() {
case net.AddressFamilyIPv4:
buffer.AppendBytes(0x01)
buffer.AppendBytes(addrTypeIPv4)
buffer.Append(address.IP())
case net.AddressFamilyIPv6:
buffer.AppendBytes(0x04)
buffer.AppendBytes(addrTypeIPv6)
buffer.Append(address.IP())
case net.AddressFamilyDomain:
if protocol.IsDomainTooLong(address.Domain()) {
return newError("Super long domain is not supported in Socks protocol: ", address.Domain())
}
buffer.AppendBytes(0x03, byte(len(address.Domain())))
buffer.AppendBytes(addrTypeDomain, byte(len(address.Domain())))
common.Must(buffer.AppendSupplier(serial.WriteString(address.Domain())))
}
common.Must(buffer.AppendSupplier(serial.WriteUint16(port.Value())))
@ -267,7 +268,7 @@ func appendAddress(buffer *buf.Buffer, address net.Address, port net.Port) error
func writeSocks5Response(writer io.Writer, errCode byte, address net.Address, port net.Port) error {
buffer := buf.NewLocal(64)
buffer.AppendBytes(socks5Version, errCode, 0x00 /* reserved */)
if err := appendAddress(buffer, address, port); err != nil {
if err := AppendAddress(buffer, address, port); err != nil {
return err
}
@ -337,7 +338,7 @@ func DecodeUDPPacket(packet []byte) (*protocol.RequestHeader, []byte, error) {
func EncodeUDPPacket(request *protocol.RequestHeader, data []byte) (*buf.Buffer, error) {
b := buf.New()
b.AppendBytes(0, 0, 0 /* Fragment */)
if err := appendAddress(b, request.Address, request.Port); err != nil {
if err := AppendAddress(b, request.Address, request.Port); err != nil {
return nil, err
}
b.Append(data)
@ -444,7 +445,7 @@ func ClientHandshake(request *protocol.RequestHeader, reader io.Reader, writer i
command = byte(cmdUDPPort)
}
b.AppendBytes(socks5Version, command, 0x00 /* reserved */)
appendAddress(b, request.Address, request.Port)
AppendAddress(b, request.Address, request.Port)
if _, err := writer.Write(b.Bytes()); err != nil {
return nil, err
}