Refactor: Rename NanoKVM to BatchuKVM and update server URL

server/service/vm/ip.go

@@ -0,0 +1,107 @@
+package vm
+
+import (
+	"fmt"
+	"net"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	Wired    = "Wired"
+	Wireless = "Wireless"
+	Other    = "Other"
+)
+
+type InterfaceInfo struct {
+	Name string
+	Type string
+	IP   net.IP
+}
+
+func GetInterfaceInfos() ([]*InterfaceInfo, error) {
+	var interfaceInfos []*InterfaceInfo
+
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		log.Errorf("failed to get net interfaces: %s", err)
+		return nil, err
+	}
+
+	for _, iface := range interfaces {
+		info := getInterfaceInfo(iface)
+		if info != nil {
+			interfaceInfos = append(interfaceInfos, info)
+		}
+	}
+
+	if len(interfaceInfos) == 0 {
+		return nil, fmt.Errorf("no valid IP address")
+	}
+
+	return interfaceInfos, nil
+}
+
+func getInterfaceInfo(iface net.Interface) *InterfaceInfo {
+	if iface.Flags&net.FlagUp == 0 {
+		return nil
+	}
+
+	interfaceType := getInterfaceType(iface)
+	if interfaceType == Other {
+		return nil
+	}
+
+	interfaceIP := getInterfaceIP(iface)
+	if interfaceIP == nil {
+		return nil
+	}
+
+	return &InterfaceInfo{
+		Name: iface.Name,
+		Type: interfaceType,
+		IP:   interfaceIP,
+	}
+}
+
+func getInterfaceType(iface net.Interface) string {
+	if strings.HasPrefix(iface.Name, "eth") || strings.HasPrefix(iface.Name, "en") {
+		return Wired
+	}
+
+	if strings.HasPrefix(iface.Name, "wlan") || strings.HasPrefix(iface.Name, "wl") {
+		return Wireless
+	}
+
+	return Other
+}
+
+func getInterfaceIP(iface net.Interface) net.IP {
+	addrs, err := iface.Addrs()
+	if err != nil {
+		log.Errorf("failed to get interface addresses: %s", err)
+		return nil
+	}
+
+	for _, addr := range addrs {
+		var ip net.IP
+
+		switch v := addr.(type) {
+		case *net.IPNet:
+			ip = v.IP
+		case *net.IPAddr:
+			ip = v.IP
+		default:
+			continue
+		}
+
+		if ip == nil {
+			continue
+		}
+
+		return ip
+	}
+
+	return nil
+}