From af3aa021050559e6bcd2f603af3c7a71b6fe7a11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Sat, 13 Jul 2024 01:56:02 +0900
Subject: [PATCH] feat(route): support `x` grammar

---
 README.md           | 47 +++++++++++++++++++++++----------------------
 gold/link/peer.go   | 10 ++++++++++
 gold/link/router.go |  2 +-
 3 files changed, 35 insertions(+), 24 deletions(-)

diff --git a/README.md b/README.md
index 395e6b5..eccb394 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 <div align="center">
   <a href="https://crypko.ai/crypko/G39ZPfer7g6rz/">
-      <img src=".github/Maria.png" width = "400" alt="WireGold-Maria">
+    <img src=".github/Maria.png" width = "400" alt="WireGold-Maria">
   </a><br>
   <h1>WireGold</h1>
   Wire Golang Guard = WireGold<br><br>
@@ -39,30 +39,31 @@ SubNet: 192.168.233.0/24
 PrivateKey: 暲菉斂狧污爉窫擸紈卆帞蔩慈睠庮扝憚瞼縀
 EndPoint: 0.0.0.0:56789
 MTU: 1504
+SpeedLoop: 4096
 Mask: 0x1234567890abcdef
 Peers:
   -
-      IP: "192.168.233.2"
-      SubNet: 192.168.233.0/24
-      PublicKey: 徯萃嵾爻燸攗窍褃冔蒔犡緇袿屿組待族砇嘀
-      PresharedKey: 瀸敀爅崾嘊嵜紼樴稍毯攣矐訷蟷扛嬋庩崛昀
-      EndPoint: 1.2.3.4:56789
-      AllowedIPs: ["192.168.233.2/32"]
-      KeepAliveSeconds: 0
-      QueryList: ["192.168.233.3"]
-      MTU: 1400
-      MTURandomRange: 128
-      UseZstd: true
-      QuerySeconds: 10
-      AllowTrans: false
+    IP: "192.168.233.2"
+    SubNet: 192.168.233.0/24
+    PublicKey: 徯萃嵾爻燸攗窍褃冔蒔犡緇袿屿組待族砇嘀
+    PresharedKey: 瀸敀爅崾嘊嵜紼樴稍毯攣矐訷蟷扛嬋庩崛昀
+    EndPoint: 1.2.3.4:56789
+    AllowedIPs: ["192.168.233.2/32", "x192.168.233.3/32"] # allow trans to 192.168.233.3, but don not create route
+    KeepAliveSeconds: 0
+    QueryList: ["192.168.233.3"]
+    MTU: 1400
+    MTURandomRange: 128
+    UseZstd: true
+    QuerySeconds: 10
+    AllowTrans: true
   -
-      IP: "192.168.233.3"
-      SubNet: 192.168.233.0/24
-      PublicKey: 牢喨粷詸衭譛浾蘹櫠砙杹蟫瑳叩刋橋経挵蘀
-      PresharedKey: 竅琚喫従痸告烈兇厕趭萨假蔛瀇譄施烸蝫瘀
-      EndPoint: ""
-      AllowedIPs: ["192.168.233.3/32"]
-      MTU: 752
-      KeepAliveSeconds: 0
-      AllowTrans: false
+    IP: "192.168.233.3"
+    SubNet: 192.168.233.0/24
+    PublicKey: 牢喨粷詸衭譛浾蘹櫠砙杹蟫瑳叩刋橋経挵蘀
+    PresharedKey: 竅琚喫従痸告烈兇厕趭萨假蔛瀇譄施烸蝫瘀
+    EndPoint: ""
+    AllowedIPs: ["192.168.233.3/32"]
+    MTU: 752
+    KeepAliveSeconds: 0
+    AllowTrans: false
 ```
diff --git a/gold/link/peer.go b/gold/link/peer.go
index 98505cb..53cb190 100644
--- a/gold/link/peer.go
+++ b/gold/link/peer.go
@@ -81,6 +81,16 @@ func (m *Me) AddPeer(cfg *PeerConfig) (l *Link) {
 	if cfg.AllowedIPs != nil {
 		l.allowedips = make([]*net.IPNet, 0, len(cfg.AllowedIPs))
 		for _, ipnet := range cfg.AllowedIPs {
+			if len(ipnet) == 0 {
+				continue
+			}
+			noroute := ipnet[0] == 'x'
+			if noroute {
+				ipnet = ipnet[1:]
+				if len(ipnet) == 0 {
+					continue
+				}
+			}
 			_, cidr, err := net.ParseCIDR(ipnet)
 			if err == nil {
 				l.allowedips = append(l.allowedips, cidr)
diff --git a/gold/link/router.go b/gold/link/router.go
index 452152d..eb2b730 100644
--- a/gold/link/router.go
+++ b/gold/link/router.go
@@ -81,7 +81,7 @@ func (r *Router) SetItem(ip *net.IPNet, l *Link) {
 		if r.list[i].Contains(ip.IP) {
 			// 是同一个网络
 			if ip.Mask.String() == r.list[i].Mask.String() {
-				logrus.Infoln("[router] change link of item", r.list[i], "from", r.table[r.list[i].String()], "to", l)
+				logrus.Warnln("[router] change link of item", r.list[i], "from", r.table[r.list[i].String()], "to", l)
 				r.table[r.list[i].String()] = l
 				break
 			}