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Code Issues Releases Wiki Activity

Make isAEAD more efficient

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RPRX 2020-09-21 01:10:56 +00:00 committed by GitHub
parent 5f620256b2
commit 470dc8523b
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4 changed files with 34 additions and 38 deletions
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44
proxy/vmess/encoding/client.go
View File

@ -12,8 +12,6 @@ import (
"hash"
"hash/fnv"
"io"
"os"
vmessaead "v2ray.com/core/proxy/vmess/aead"
"golang.org/x/crypto/chacha20poly1305"
@ -25,6 +23,7 @@ import (
"v2ray.com/core/common/protocol"
"v2ray.com/core/common/serial"
"v2ray.com/core/proxy/vmess"
vmessaead "v2ray.com/core/proxy/vmess/aead"
)
func hashTimestamp(h hash.Hash, t protocol.Timestamp) []byte {
@ -37,6 +36,7 @@ func hashTimestamp(h hash.Hash, t protocol.Timestamp) []byte {
// ClientSession stores connection session info for VMess client.
type ClientSession struct {
isAEAD bool
idHash protocol.IDHash
requestBodyKey [16]byte
requestBodyIV [16]byte
@ -44,35 +44,23 @@ type ClientSession struct {
responseBodyIV [16]byte
responseReader io.Reader
responseHeader byte
isAEADRequest bool
}
// NewClientSession creates a new ClientSession.
func NewClientSession(idHash protocol.IDHash, ctx context.Context) *ClientSession {
func NewClientSession(isAEAD bool, idHash protocol.IDHash, ctx context.Context) *ClientSession {
session := &ClientSession{
isAEAD: isAEAD,
idHash: idHash,
}
randomBytes := make([]byte, 33) // 16 + 16 + 1
common.Must2(rand.Read(randomBytes))
session := &ClientSession{}
session.isAEADRequest = false
if ctxValueAlterID := ctx.Value(vmess.AlterID); ctxValueAlterID != nil {
if ctxValueAlterID == 0 {
session.isAEADRequest = true
}
}
if vmessAeadDisable, vmessAeadDisableFound := os.LookupEnv("V2RAY_VMESS_AEAD_DISABLED"); vmessAeadDisableFound {
if vmessAeadDisable == "true" {
session.isAEADRequest = false
}
}
copy(session.requestBodyKey[:], randomBytes[:16])
copy(session.requestBodyIV[:], randomBytes[16:32])
session.responseHeader = randomBytes[32]
if !session.isAEADRequest {
if !session.isAEAD {
session.responseBodyKey = md5.Sum(session.requestBodyKey[:])
session.responseBodyIV = md5.Sum(session.requestBodyIV[:])
} else {
@ -82,15 +70,13 @@ func NewClientSession(idHash protocol.IDHash, ctx context.Context) *ClientSessio
copy(session.responseBodyIV[:], BodyIV[:16])
}
session.idHash = idHash
return session
}
func (c *ClientSession) EncodeRequestHeader(header *protocol.RequestHeader, writer io.Writer) error {
timestamp := protocol.NewTimestampGenerator(protocol.NowTime(), 30)()
account := header.User.Account.(*vmess.MemoryAccount)
if !c.isAEADRequest {
if !c.isAEAD {
idHash := c.idHash(account.AnyValidID().Bytes())
common.Must2(serial.WriteUint64(idHash, uint64(timestamp)))
common.Must2(writer.Write(idHash.Sum(nil)))
@ -126,7 +112,7 @@ func (c *ClientSession) EncodeRequestHeader(header *protocol.RequestHeader, writ
fnv1a.Sum(hashBytes[:0])
}
if !c.isAEADRequest {
if !c.isAEAD {
iv := hashTimestamp(md5.New(), timestamp)
aesStream := crypto.NewAesEncryptionStream(account.ID.CmdKey(), iv[:])
aesStream.XORKeyStream(buffer.Bytes(), buffer.Bytes())
@ -203,7 +189,7 @@ func (c *ClientSession) EncodeRequestBody(request *protocol.RequestHeader, write
}
func (c *ClientSession) DecodeResponseHeader(reader io.Reader) (*protocol.ResponseHeader, error) {
if !c.isAEADRequest {
if !c.isAEAD {
aesStream := crypto.NewAesDecryptionStream(c.responseBodyKey[:], c.responseBodyIV[:])
c.responseReader = crypto.NewCryptionReader(aesStream, reader)
} else {
@ -274,7 +260,7 @@ func (c *ClientSession) DecodeResponseHeader(reader io.Reader) (*protocol.Respon
header.Command = command
}
}
if c.isAEADRequest {
if c.isAEAD {
aesStream := crypto.NewAesDecryptionStream(c.responseBodyKey[:], c.responseBodyIV[:])
c.responseReader = crypto.NewCryptionReader(aesStream, reader)
}

6
proxy/vmess/encoding/encoding_test.go
View File

@ -43,7 +43,7 @@ func TestRequestSerialization(t *testing.T) {
}
buffer := buf.New()
client := NewClientSession(protocol.DefaultIDHash, context.TODO())
client := NewClientSession(true, protocol.DefaultIDHash, context.TODO())
common.Must(client.EncodeRequestHeader(expectedRequest, buffer))
buffer2 := buf.New()
@ -93,7 +93,7 @@ func TestInvalidRequest(t *testing.T) {
}
buffer := buf.New()
client := NewClientSession(protocol.DefaultIDHash, context.TODO())
client := NewClientSession(true, protocol.DefaultIDHash, context.TODO())
common.Must(client.EncodeRequestHeader(expectedRequest, buffer))
buffer2 := buf.New()
@ -134,7 +134,7 @@ func TestMuxRequest(t *testing.T) {
}
buffer := buf.New()
client := NewClientSession(protocol.DefaultIDHash, context.TODO())
client := NewClientSession(true, protocol.DefaultIDHash, context.TODO())
common.Must(client.EncodeRequestHeader(expectedRequest, buffer))
buffer2 := buf.New()

21
proxy/vmess/outbound/outbound.go
View File

@ -6,6 +6,7 @@ package outbound
import (
"context"
"os"
"time"
"v2ray.com/core"
@ -30,6 +31,7 @@ type Handler struct {
serverList *protocol.ServerList
serverPicker protocol.ServerPicker
policyManager policy.Manager
aead_disabled bool
}
// New creates a new VMess outbound handler.
@ -50,16 +52,20 @@ func New(ctx context.Context, config *Config) (*Handler, error) {
policyManager: v.GetFeature(policy.ManagerType()).(policy.Manager),
}
if disabled, _ := os.LookupEnv("V2RAY_VMESS_AEAD_DISABLED"); disabled == "true" {
handler.aead_disabled = true
}
return handler, nil
}
// Process implements proxy.Outbound.Process().
func (v *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer internet.Dialer) error {
var rec *protocol.ServerSpec
var conn internet.Connection
err := retry.ExponentialBackoff(5, 200).On(func() error {
rec = v.serverPicker.PickServer()
rec = h.serverPicker.PickServer()
rawConn, err := dialer.Dial(ctx, rec.Destination())
if err != nil {
return err
@ -113,10 +119,13 @@ func (v *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
input := link.Reader
output := link.Writer
ctx = context.WithValue(ctx, vmess.AlterID, len(account.AlterIDs))
isAEAD := false
if !h.aead_disabled && len(account.AlterIDs) == 0 {
isAEAD = true
}
session := encoding.NewClientSession(protocol.DefaultIDHash, ctx)
sessionPolicy := v.policyManager.ForLevel(request.User.Level)
session := encoding.NewClientSession(isAEAD, protocol.DefaultIDHash, ctx)
sessionPolicy := h.policyManager.ForLevel(request.User.Level)
ctx, cancel := context.WithCancel(ctx)
timer := signal.CancelAfterInactivity(ctx, cancel, sessionPolicy.Timeouts.ConnectionIdle)
@ -159,7 +168,7 @@ func (v *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
if err != nil {
return newError("failed to read header").Base(err)
}
v.handleCommand(rec.Destination(), header.Command)
h.handleCommand(rec.Destination(), header.Command)
bodyReader := session.DecodeResponseBody(request, reader)

1
proxy/vmess/vmessCtxInterface.go
View File

@ -1,3 +1,4 @@
package vmess
// example
const AlterID = "VMessCtxInterface_AlterID"