Init: first commit 🎉

rules/ipcidr.go

@@ -0,0 +1,42 @@
+package rules
+
+import (
+	"net"
+
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type IPCIDR struct {
+	ipnet   *net.IPNet
+	adapter string
+}
+
+func (i *IPCIDR) RuleType() C.RuleType {
+	return C.IPCIDR
+}
+
+func (i *IPCIDR) IsMatch(addr *C.Addr) bool {
+	if addr.AddrType == C.AtypDomainName {
+		return false
+	}
+	ip := net.ParseIP(addr.Host)
+	if ip == nil {
+		return false
+	}
+
+	return i.ipnet.Contains(ip)
+}
+
+func (g *IPCIDR) Adapter() string {
+	return g.adapter
+}
+
+func NewIPCIDR(s string, adapter string) *IPCIDR {
+	_, ipnet, err := net.ParseCIDR(s)
+	if err != nil {
+	}
+	return &IPCIDR{
+		ipnet:   ipnet,
+		adapter: adapter,
+	}
+}