From 73aa8c7be7d06e16a86b60c8eda2eee476431231 Mon Sep 17 00:00:00 2001
From: Meta <maze.y2b@gmail.com>
Date: Wed, 27 Apr 2022 18:02:29 +0800
Subject: [PATCH] feat: support uuid with custom string

---
 adapter/outbound/base.go  | 28 ++++++++++++++++++++++++++++
 adapter/outbound/vless.go |  2 +-
 adapter/outbound/vmess.go |  2 +-
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/adapter/outbound/base.go b/adapter/outbound/base.go
index e9119415..6b5c61f6 100644
--- a/adapter/outbound/base.go
+++ b/adapter/outbound/base.go
@@ -2,9 +2,12 @@ package outbound
 
 import (
 	"context"
+	"crypto/sha1"
+	"encoding/hex"
 	"encoding/json"
 	"errors"
 	"net"
+	"regexp"
 
 	"github.com/Dreamacro/clash/component/dialer"
 	C "github.com/Dreamacro/clash/constant"
@@ -136,3 +139,28 @@ func (c *packetConn) AppendToChains(a C.ProxyAdapter) {
 func newPacketConn(pc net.PacketConn, a C.ProxyAdapter) C.PacketConn {
 	return &packetConn{pc, []string{a.Name()}}
 }
+
+func uuidMap(str string) string {
+	match, _ := regexp.MatchString(`[\da-f]{8}(-[\da-f]{4}){3}-[\da-f]{12}$`, str)
+	if !match {
+		var Nil [16]byte
+		h := sha1.New()
+		h.Write(Nil[:])
+		h.Write([]byte(str))
+		u := h.Sum(nil)[:16]
+		u[6] = (u[6] & 0x0f) | (5 << 4)
+		u[8] = u[8]&(0xff>>2) | (0x02 << 6)
+		buf := make([]byte, 36)
+		hex.Encode(buf[0:8], u[0:4])
+		buf[8] = '-'
+		hex.Encode(buf[9:13], u[4:6])
+		buf[13] = '-'
+		hex.Encode(buf[14:18], u[6:8])
+		buf[18] = '-'
+		hex.Encode(buf[19:23], u[8:10])
+		buf[23] = '-'
+		hex.Encode(buf[24:], u[10:])
+		return string(buf)
+	}
+	return str
+}
diff --git a/adapter/outbound/vless.go b/adapter/outbound/vless.go
index d8e8e18f..1cea9ab5 100644
--- a/adapter/outbound/vless.go
+++ b/adapter/outbound/vless.go
@@ -386,7 +386,7 @@ func NewVless(option VlessOption) (*Vless, error) {
 		}
 	}
 
-	client, err := vless.NewClient(option.UUID, addons, option.FlowShow)
+	client, err := vless.NewClient(uuidMap(option.UUID), addons, option.FlowShow)
 	if err != nil {
 		return nil, err
 	}
diff --git a/adapter/outbound/vmess.go b/adapter/outbound/vmess.go
index b32349d0..be3def96 100644
--- a/adapter/outbound/vmess.go
+++ b/adapter/outbound/vmess.go
@@ -266,7 +266,7 @@ func (v *Vmess) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 func NewVmess(option VmessOption) (*Vmess, error) {
 	security := strings.ToLower(option.Cipher)
 	client, err := vmess.NewClient(vmess.Config{
-		UUID:     option.UUID,
+		UUID:     uuidMap(option.UUID),
 		AlterID:  uint16(option.AlterID),
 		Security: security,
 		HostName: option.Server,