feat: support fake-ip-filter-mode: rule mode (#2469)

component/fakeip/skipper.go

@@ -4,13 +4,29 @@ import (
 	C "github.com/metacubex/mihomo/constant"
 )
 
+const (
+	UseFakeIP = "fake-ip"
+	UseRealIP = "real-ip"
+)
+
 type Skipper struct {
-	Host []C.DomainMatcher
-	Mode C.FilterMode
+	Rules []C.Rule
+	Host  []C.DomainMatcher
+	Mode  C.FilterMode
 }
 
 // ShouldSkipped return if domain should be skipped
 func (p *Skipper) ShouldSkipped(domain string) bool {
+	if len(p.Rules) > 0 {
+		metadata := &C.Metadata{Host: domain}
+		for _, rule := range p.Rules {
+			if matched, action := rule.Match(metadata, C.RuleMatchHelper{}); matched {
+				return action == UseRealIP
+			}
+		}
+		return false
+	}
+
 	should := p.shouldSkipped(domain)
 	if p.Mode == C.FilterWhiteList {
 		return !should