chore: 调整目录与包名一致

rules/common/port.go

@@ -0,0 +1,103 @@
+package common
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/Dreamacro/clash/common/utils"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+type Port struct {
+	*Base
+	adapter  string
+	port     string
+	isSource bool
+	portList []utils.Range[uint16]
+}
+
+func (p *Port) RuleType() C.RuleType {
+	if p.isSource {
+		return C.SrcPort
+	}
+	return C.DstPort
+}
+
+func (p *Port) Match(metadata *C.Metadata) bool {
+	if p.isSource {
+		return p.matchPortReal(metadata.SrcPort)
+	}
+	return p.matchPortReal(metadata.DstPort)
+}
+
+func (p *Port) Adapter() string {
+	return p.adapter
+}
+
+func (p *Port) Payload() string {
+	return p.port
+}
+
+func (p *Port) matchPortReal(portRef string) bool {
+	port, _ := strconv.Atoi(portRef)
+
+	for _, pr := range p.portList {
+		if pr.Contains(uint16(port)) {
+			return true
+		}
+	}
+
+	return false
+}
+
+func NewPort(port string, adapter string, isSource bool) (*Port, error) {
+	ports := strings.Split(port, "/")
+	if len(ports) > 28 {
+		return nil, fmt.Errorf("%s, too many ports to use, maximum support 28 ports", errPayload.Error())
+	}
+
+	var portRange []utils.Range[uint16]
+	for _, p := range ports {
+		if p == "" {
+			continue
+		}
+
+		subPorts := strings.Split(p, "-")
+		subPortsLen := len(subPorts)
+		if subPortsLen > 2 {
+			return nil, errPayload
+		}
+
+		portStart, err := strconv.ParseUint(strings.Trim(subPorts[0], "[ ]"), 10, 16)
+		if err != nil {
+			return nil, errPayload
+		}
+
+		switch subPortsLen {
+		case 1:
+			portRange = append(portRange, *utils.NewRange(uint16(portStart), uint16(portStart)))
+		case 2:
+			portEnd, err := strconv.ParseUint(strings.Trim(subPorts[1], "[ ]"), 10, 16)
+			if err != nil {
+				return nil, errPayload
+			}
+
+			portRange = append(portRange, *utils.NewRange(uint16(portStart), uint16(portEnd)))
+		}
+	}
+
+	if len(portRange) == 0 {
+		return nil, errPayload
+	}
+
+	return &Port{
+		Base:     &Base{},
+		adapter:  adapter,
+		port:     port,
+		isSource: isSource,
+		portList: portRange,
+	}, nil
+}
+
+var _ C.Rule = (*Port)(nil)