feat: create standalone native fnOS repository

app-src/internal/validate/ip.go

@@ -0,0 +1,38 @@
+package validate
+
+import (
+	"fmt"
+	"net"
+	"strings"
+)
+
+func IPOrCIDR(raw string) (string, error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", fmt.Errorf("IP 或 CIDR 不能为空")
+	}
+	if strings.Contains(raw, "/") {
+		_, ipNet, err := net.ParseCIDR(raw)
+		if err != nil {
+			return "", fmt.Errorf("CIDR 格式无效")
+		}
+		return ipNet.String(), nil
+	}
+	ip := net.ParseIP(raw)
+	if ip == nil {
+		return "", fmt.Errorf("IP 格式无效")
+	}
+	if v4 := ip.To4(); v4 != nil {
+		return v4.String(), nil
+	}
+	return ip.String(), nil
+}
+
+func IPOrCIDRList(list []string) error {
+	for _, item := range list {
+		if _, err := IPOrCIDR(item); err != nil {
+			return err
+		}
+	}
+	return nil
+}