fix: 修复IPV6子网掩码识别错误的问题

network/ipv6/ipv6_mask_darwin.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"os/exec"
 	"regexp"
+	"strconv"
 	"strings"
 )
 
@@ -17,20 +18,14 @@ func getPrefixFromIfconfig(interfaceName string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-
-	// 匹配 inet6 地址和前缀长度
 	re := regexp.MustCompile(`inet6\s+([a-fA-F0-9:]+)%?\w*\s+prefixlen\s+(\d+)`)
 	matches := re.FindAllStringSubmatch(string(output), -1)
-
 	for _, match := range matches {
 		if len(match) < 3 {
 			continue
 		}
-
 		ipv6Addr := match[1]
 		prefixLen := match[2]
-
-		// 排除非公网地址前缀
 		if strings.HasPrefix(ipv6Addr, "fe80") || // 链路本地地址
 			strings.HasPrefix(ipv6Addr, "::1") || // 回环地址
 			strings.HasPrefix(ipv6Addr, "fc") || // 本地唯一地址
@@ -38,29 +33,26 @@ func getPrefixFromIfconfig(interfaceName string) (string, error) {
 			strings.HasPrefix(ipv6Addr, "ff") { // 组播地址
 			continue
 		}
-
+		prefixLenInt, err := strconv.Atoi(prefixLen)
+		if err != nil || prefixLenInt < 0 || prefixLenInt > 128 {
+			continue
+		}
 		return prefixLen, nil
 	}
-
 	return "", fmt.Errorf("未找到全局IPv6地址")
 }
 
 // macOS平台上使用networksetup命令获取更多信息
 func getPrefixFromNetworksetup(interfaceName string) (string, error) {
-	// 首先需要获取网络服务名称
 	cmd := exec.Command("networksetup", "-listallhardwareports")
 	output, err := cmd.Output()
 	if err != nil {
 		return "", err
 	}
-
-	// 解析输出查找对应的网络服务名称
 	lines := strings.Split(string(output), "\n")
 	var serviceName string
-
 	for i := 0; i < len(lines); i++ {
 		if strings.Contains(lines[i], "Device: "+interfaceName) && i > 0 {
-			// 服务名称在上一行
 			serviceNameLine := lines[i-1]
 			if strings.HasPrefix(serviceNameLine, "Hardware Port: ") {
 				serviceName = strings.TrimPrefix(serviceNameLine, "Hardware Port: ")
@@ -68,35 +60,32 @@ func getPrefixFromNetworksetup(interfaceName string) (string, error) {
 			}
 		}
 	}
-
 	if serviceName == "" {
 		return "", fmt.Errorf("未找到网络接口对应的服务名称")
 	}
-
-	// 使用服务名称获取IPv6配置
 	cmd = exec.Command("networksetup", "-getinfo", serviceName)
 	output, err = cmd.Output()
 	if err != nil {
 		return "", err
 	}
-
-	// 查找IPv6前缀长度
 	re := regexp.MustCompile(`IPv6:\s*Automatic\s*\nIPv6\s*Address:\s*([a-fA-F0-9:]+)\s*\nIPv6\s*Prefix\s*Length:\s*(\d+)`)
 	match := re.FindStringSubmatch(string(output))
-
 	if len(match) >= 3 {
-		return match[2], nil
+		prefixLen := match[2]
+		prefixLenInt, err := strconv.Atoi(prefixLen)
+		if err != nil || prefixLenInt < 0 || prefixLenInt > 128 {
+			return "", fmt.Errorf("无效的IPv6前缀长度: %s", prefixLen)
+		}
+		return prefixLen, nil
 	}
-
 	return "", fmt.Errorf("未找到IPv6前缀长度信息")
 }
 
-// 获取 IPv6 子网掩码 - macOS 实现
+// 获取 IPv6 子网掩码
 func GetIPv6Mask(publicIPv6, language string) (string, error) {
 	if publicIPv6 == "" {
 		return "", fmt.Errorf("无公网IPV6地址")
 	}
-	// 获取网络接口
 	interfaceName, err := getInterface()
 	if err != nil || interfaceName == "" {
 		return "", fmt.Errorf("获取网络接口失败: %v", err)
@@ -111,6 +100,5 @@ func GetIPv6Mask(publicIPv6, language string) (string, error) {
 	if err == nil && prefixLen != "" {
 		return formatIPv6Mask(prefixLen, language), nil
 	}
-	// 如果以上方法都失败但确实有公网IPv6，使用/128作为默认子网掩码
 	return formatIPv6Mask("128", language), nil
 }