add fake_ip item in DefaultRule to match FakeIP origin destination

PuerNya · Jul 1, 2024 · 5362057 · 5362057
1 parent fa1fd7a
commit 5362057
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diff --git a/docs/configuration/route/rule.md b/docs/configuration/route/rule.md
@@ -107,6 +107,7 @@
           "geosite-cn"
         ],
         "rule_set_ipcidr_match_source": false,
+        "fake_ip": false,
         "invert": false,
         "skip_resolve": false,
         "outbound": "direct"
@@ -312,6 +313,10 @@ Match [Rule Set](/configuration/route/#rule_set).
 
 Make `ipcidr` in rule sets match the source IP.
 
+#### fake_ip
+
+Match FakeIP origin destination.
+
 #### invert
 
 Invert match result.

diff --git a/docs/configuration/route/rule.zh.md b/docs/configuration/route/rule.zh.md
@@ -105,6 +105,7 @@
           "geosite-cn"
         ],
         "rule_set_ipcidr_match_source": false,
+        "fake_ip": false,
         "invert": false,
         "skip_resolve": false,
         "outbound": "direct"
@@ -310,6 +311,10 @@
 
 使规则集中的 `ipcidr` 规则匹配源 IP。
 
+#### fake_ip
+
+匹配入站为 FakeIP 的情况
+
 #### invert
 
 反选匹配结果。

diff --git a/option/rule.go b/option/rule.go
@@ -96,6 +96,7 @@ type DefaultRule struct {
 	WIFIBSSID                Listable[string] `json:"wifi_bssid,omitempty"`
 	RuleSet                  Listable[string] `json:"rule_set,omitempty"`
 	RuleSetIPCIDRMatchSource bool             `json:"rule_set_ipcidr_match_source,omitempty"`
+	FakeIP                   bool             `json:"fake_ip,omitempty"`
 	Invert                   bool             `json:"invert,omitempty"`
 	SkipResolve              bool             `json:"skip_resolve,omitempty"`
 	Outbound                 string           `json:"outbound,omitempty"`

diff --git a/route/rule_default.go b/route/rule_default.go
@@ -217,6 +217,11 @@ func NewDefaultRule(router adapter.Router, logger log.ContextLogger, options opt
 		rule.ruleSetItems = append(rule.ruleSetItems, item)
 		rule.allItems = append(rule.allItems, item)
 	}
+	if options.FakeIP {
+		item := NewFakeIPItem()
+		rule.items = append(rule.items, item)
+		rule.allItems = append(rule.allItems, item)
+	}
 	return rule, nil
 }
 

diff --git a/route/rule_item_fake_ip.go b/route/rule_item_fake_ip.go
@@ -0,0 +1,22 @@
+package route
+
+import (
+	"github.com/sagernet/sing-box/adapter"
+	C "github.com/sagernet/sing-box/constant"
+)
+
+var _ RuleItem = (*FakeIPItem)(nil)
+
+type FakeIPItem struct{}
+
+func NewFakeIPItem() *FakeIPItem {
+	return &FakeIPItem{}
+}
+
+func (r *FakeIPItem) Match(metadata *adapter.InboundContext) bool {
+	return metadata.DNSMode == C.DNSModeFakeIP
+}
+
+func (r *FakeIPItem) String() string {
+	return "fake_ip=true"
+}