Crazy sekai overturns the small pond

route/rule/rule_item_package_name.go

@@ -0,0 +1,43 @@
+package rule
+
+import (
+	"strings"
+
+	"github.com/sagernet/sing-box/adapter"
+)
+
+var _ RuleItem = (*PackageNameItem)(nil)
+
+type PackageNameItem struct {
+	packageNames []string
+	packageMap   map[string]bool
+}
+
+func NewPackageNameItem(packageNameList []string) *PackageNameItem {
+	rule := &PackageNameItem{
+		packageNames: packageNameList,
+		packageMap:   make(map[string]bool),
+	}
+	for _, packageName := range packageNameList {
+		rule.packageMap[packageName] = true
+	}
+	return rule
+}
+
+func (r *PackageNameItem) Match(metadata *adapter.InboundContext) bool {
+	if metadata.ProcessInfo == nil || metadata.ProcessInfo.PackageName == "" {
+		return false
+	}
+	return r.packageMap[metadata.ProcessInfo.PackageName]
+}
+
+func (r *PackageNameItem) String() string {
+	var description string
+	pLen := len(r.packageNames)
+	if pLen == 1 {
+		description = "package_name=" + r.packageNames[0]
+	} else {
+		description = "package_name=[" + strings.Join(r.packageNames, " ") + "]"
+	}
+	return description
+}