feat: 简单实现静态arp设置
This commit is contained in:
421
server/src/ArpClient.cs
Normal file
421
server/src/ArpClient.cs
Normal file
@@ -0,0 +1,421 @@
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Text.RegularExpressions;
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/// <summary>
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/// ARP 记录管理静态类（跨平台支持）
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/// </summary>
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public static class Arp
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{
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/// <summary>
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/// 读取所有 ARP 记录
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/// </summary>
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/// <returns>ARP 记录列表</returns>
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public static async Task<List<ArpEntry>> GetArpTableAsync()
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{
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var entries = new List<ArpEntry>();
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try
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{
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string command = GetArpListCommand();
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var result = await ExecuteCommandAsync(command);
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if (result.IsSuccess)
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{
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var lines = result.Output.Split('\n', StringSplitOptions.RemoveEmptyEntries);
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foreach (var line in lines)
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{
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var entry = ParseArpEntry(line);
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if (entry != null)
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{
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entries.Add(entry);
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}
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}
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}
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}
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catch (Exception ex)
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{
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throw new Exception($"读取 ARP 表失败: {ex.Message}");
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}
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return entries;
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}
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/// <summary>
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/// 添加 ARP 记录
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/// </summary>
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/// <param name="ipAddress">IP 地址</param>
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/// <param name="macAddress">MAC 地址</param>
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/// <param name="interfaceName">网络接口名称（可选）</param>
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/// <returns>是否成功</returns>
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public static async Task<bool> AddArpEntryAsync(string ipAddress, string macAddress, string interfaceName = null)
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{
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if (string.IsNullOrWhiteSpace(ipAddress))
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throw new ArgumentException("IP 地址不能为空", nameof(ipAddress));
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if (string.IsNullOrWhiteSpace(macAddress))
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throw new ArgumentException("MAC 地址不能为空", nameof(macAddress));
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try
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{
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string command = GetArpAddCommand(ipAddress, macAddress, interfaceName);
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var result = await ExecuteCommandAsync(command);
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return result.IsSuccess;
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}
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catch (Exception ex)
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{
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throw new Exception($"添加 ARP 记录失败: {ex.Message}");
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}
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}
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/// <summary>
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/// 删除 ARP 记录
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/// </summary>
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/// <param name="ipAddress">要删除的 IP 地址</param>
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/// <param name="interfaceName">网络接口名称（可选）</param>
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/// <returns>是否成功</returns>
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public static async Task<bool> DeleteArpEntryAsync(string ipAddress, string interfaceName = null)
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{
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if (string.IsNullOrWhiteSpace(ipAddress))
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throw new ArgumentException("IP 地址不能为空", nameof(ipAddress));
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try
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{
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string command = GetArpDeleteCommand(ipAddress, interfaceName);
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var result = await ExecuteCommandAsync(command);
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return result.IsSuccess;
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}
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catch (Exception ex)
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{
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throw new Exception($"删除 ARP 记录失败: {ex.Message}");
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}
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}
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/// <summary>
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/// 清空所有 ARP 记录
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/// </summary>
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/// <returns>是否成功</returns>
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public static async Task<bool> ClearArpTableAsync()
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{
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try
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{
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string command = GetArpClearCommand();
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var result = await ExecuteCommandAsync(command);
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return result.IsSuccess;
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}
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catch (Exception ex)
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{
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throw new Exception($"清空 ARP 表失败: {ex.Message}");
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}
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}
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/// <summary>
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/// 查询特定 IP 的 ARP 记录
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/// </summary>
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/// <param name="ipAddress">IP 地址</param>
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/// <returns>ARP 记录，如果不存在则返回 null</returns>
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public static async Task<ArpEntry?> GetArpEntryAsync(string ipAddress)
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{
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if (string.IsNullOrWhiteSpace(ipAddress))
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throw new ArgumentException("IP 地址不能为空", nameof(ipAddress));
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try
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{
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string command = GetArpQueryCommand(ipAddress);
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var result = await ExecuteCommandAsync(command);
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if (result.IsSuccess)
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{
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var lines = result.Output.Split('\n', StringSplitOptions.RemoveEmptyEntries);
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foreach (var line in lines)
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{
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var entry = ParseArpEntry(line);
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if (entry != null && entry.IpAddress == ipAddress)
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{
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return entry;
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}
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}
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}
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}
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catch (Exception ex)
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{
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throw new Exception($"查询 ARP 记录失败: {ex.Message}");
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}
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return null;
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}
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/// <summary>
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/// 获取 ARP 列表命令
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/// </summary>
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private static string GetArpListCommand()
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{
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return RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
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? "arp -a"
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: "arp -a";
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}
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/// <summary>
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/// 获取 ARP 添加命令
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/// </summary>
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private static string GetArpAddCommand(string ipAddress, string macAddress, string interfaceName)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return string.IsNullOrWhiteSpace(interfaceName)
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? $"arp -s {ipAddress} {macAddress}"
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: $"arp -s {ipAddress} {macAddress} {interfaceName}";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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return string.IsNullOrWhiteSpace(interfaceName)
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? $"arp -s {ipAddress} {macAddress}"
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: $"arp -s {ipAddress} {macAddress} -i {interfaceName}";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return string.IsNullOrWhiteSpace(interfaceName)
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? $"arp -s {ipAddress} {macAddress}"
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: $"arp -s {ipAddress} {macAddress} ifscope {interfaceName}";
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}
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else
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{
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throw new PlatformNotSupportedException("不支持的操作系统平台");
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}
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}
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/// <summary>
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/// 获取 ARP 删除命令
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/// </summary>
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private static string GetArpDeleteCommand(string ipAddress, string interfaceName)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return $"arp -d {ipAddress}";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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return string.IsNullOrWhiteSpace(interfaceName)
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? $"arp -d {ipAddress}"
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: $"arp -d {ipAddress} -i {interfaceName}";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return string.IsNullOrWhiteSpace(interfaceName)
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? $"arp -d {ipAddress}"
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: $"arp -d {ipAddress} ifscope {interfaceName}";
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}
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else
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{
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throw new PlatformNotSupportedException("不支持的操作系统平台");
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}
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}
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/// <summary>
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/// 获取 ARP 清空命令
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/// </summary>
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private static string GetArpClearCommand()
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return "arp -d *";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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return "ip neigh flush all";
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return "arp -d -a";
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}
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else
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{
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throw new PlatformNotSupportedException("不支持的操作系统平台");
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}
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}
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/// <summary>
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/// 获取 ARP 查询命令
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/// </summary>
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private static string GetArpQueryCommand(string ipAddress)
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return $"arp -a {ipAddress}";
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}
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else
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{
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return $"arp -n {ipAddress}";
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}
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}
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/// <summary>
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/// 执行系统命令
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/// </summary>
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/// <param name="command">命令</param>
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/// <returns>命令执行结果</returns>
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private static async Task<CommandResult> ExecuteCommandAsync(string command)
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{
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try
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{
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ProcessStartInfo processInfo;
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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processInfo = new ProcessStartInfo
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{
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FileName = "cmd.exe",
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Arguments = $"/c {command}",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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}
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else
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{
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processInfo = new ProcessStartInfo
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{
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FileName = "/bin/bash",
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Arguments = $"-c \"{command}\"",
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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UseShellExecute = false,
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CreateNoWindow = true
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};
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}
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using var process = new Process { StartInfo = processInfo };
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process.Start();
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var output = await process.StandardOutput.ReadToEndAsync();
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var error = await process.StandardError.ReadToEndAsync();
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await process.WaitForExitAsync();
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return new CommandResult
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{
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IsSuccess = process.ExitCode == 0,
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Output = output,
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Error = error,
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ExitCode = process.ExitCode
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};
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}
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catch (Exception ex)
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{
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return new CommandResult
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{
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IsSuccess = false,
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Error = ex.Message,
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ExitCode = -1
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};
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}
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}
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/// <summary>
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/// 解析 ARP 记录行
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/// </summary>
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/// <param name="line">ARP 记录行</param>
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/// <returns>解析后的 ARP 记录</returns>
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private static ArpEntry? ParseArpEntry(string line)
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{
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if (string.IsNullOrWhiteSpace(line))
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return null;
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return ParseWindowsArpEntry(line);
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}
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else
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{
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return ParseUnixArpEntry(line);
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}
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}
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/// <summary>
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/// 解析 Windows ARP 记录
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/// </summary>
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private static ArpEntry? ParseWindowsArpEntry(string line)
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{
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// Windows arp -a 输出格式: IP地址 物理地址 类型
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var pattern = @"(\d+\.\d+\.\d+\.\d+)\s+([a-fA-F0-9-]{17})\s+(\w+)";
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var match = Regex.Match(line, pattern);
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if (match.Success)
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{
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return new ArpEntry
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{
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IpAddress = match.Groups[1].Value,
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MacAddress = match.Groups[2].Value.Replace('-', ':'),
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Type = match.Groups[3].Value
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};
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}
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return null;
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}
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/// <summary>
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/// 解析 Unix/Linux ARP 记录
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/// </summary>
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private static ArpEntry? ParseUnixArpEntry(string line)
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{
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// Unix/Linux arp -a 输出格式: hostname (ip) at mac [ether] on interface
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var pattern = @"(\S+)\s+\((\d+\.\d+\.\d+\.\d+)\)\s+at\s+([a-fA-F0-9:]{17})\s+\[(\w+)\]\s+on\s+(\S+)";
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var match = Regex.Match(line, pattern);
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if (match.Success)
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{
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return new ArpEntry
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{
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Hostname = match.Groups[1].Value,
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IpAddress = match.Groups[2].Value,
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MacAddress = match.Groups[3].Value,
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Type = match.Groups[4].Value,
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Interface = match.Groups[5].Value
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};
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}
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// 匹配简单格式: ip mac interface
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var simplePattern = @"(\d+\.\d+\.\d+\.\d+)\s+([a-fA-F0-9:]{17})\s+(\S+)";
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var simpleMatch = Regex.Match(line, simplePattern);
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if (simpleMatch.Success)
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{
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return new ArpEntry
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{
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IpAddress = simpleMatch.Groups[1].Value,
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MacAddress = simpleMatch.Groups[2].Value,
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Interface = simpleMatch.Groups[3].Value
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};
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}
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return null;
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}
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}
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/// <summary>
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/// ARP 记录条目
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/// </summary>
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public class ArpEntry
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{
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public string Hostname { get; set; } = string.Empty;
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public string IpAddress { get; set; } = string.Empty;
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public string MacAddress { get; set; } = string.Empty;
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public string Type { get; set; } = string.Empty;
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public string Interface { get; set; } = string.Empty;
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public override string ToString()
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{
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return $"{IpAddress} -> {MacAddress} ({Interface})";
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}
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}
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/// <summary>
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/// 命令执行结果
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/// </summary>
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public class CommandResult
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{
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public bool IsSuccess { get; set; }
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public string Output { get; set; } = string.Empty;
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public string Error { get; set; } = string.Empty;
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public int ExitCode { get; set; }
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}
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@@ -585,242 +585,6 @@ public class UDPServer
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}
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}
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// 强制进行ARP刷新，防止后续传输时造成影响
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// FlushArpEntry(ipAddr);
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}
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/// <summary>
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/// 跨平台ARP缓存刷新
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private void FlushArpEntry(string ipAddr)
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{
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try
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{
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// 验证IP地址格式
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if (!IPAddress.TryParse(ipAddr, out var _))
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{
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logger.Warn($"Invalid IP address format: {ipAddr}");
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return;
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}
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ExecuteArpFlush(ipAddr);
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}
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catch (Exception ex)
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{
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logger.Error($"Error during ARP cache flush for {ipAddr}: {ex.Message}");
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}
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}
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/// <summary>
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/// 使用Ping类重新刷新ARP缓存
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private async void RefreshArpWithPing(string ipAddr)
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{
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try
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{
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using var ping = new Ping();
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var options = new PingOptions
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{
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DontFragment = true,
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Ttl = 32,
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};
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// 创建32字节的数据包
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byte[] buffer = new byte[32];
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for (int i = 0; i < buffer.Length; i++)
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{
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buffer[i] = (byte)(i % 256);
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}
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// 异步发送ping，100ms超时
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var reply = await ping.SendPingAsync(ipAddr, 100, buffer, options);
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if (reply.Status == IPStatus.Success)
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{
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logger.Debug($"ARP cache refreshed successfully for {ipAddr} (RTT: {reply.RoundtripTime}ms)");
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}
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else
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{
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logger.Warn($"Ping to {ipAddr} failed with status: {reply.Status}, but ARP entry should still be updated");
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}
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}
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catch (Exception ex)
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{
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logger.Error($"Error refreshing ARP with ping for {ipAddr}: {ex.Message}");
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}
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}
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/// <summary>
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/// 执行ARP刷新流程：先删除ARP条目，再用ping重新刷新
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/// </summary>
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/// <param name="ipAddr">目标IP地址</param>
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private void ExecuteArpFlush(string ipAddr)
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{
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try
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{
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// 第一步：删除ARP条目
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bool deleteSuccess = DeleteArpEntry(ipAddr);
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if (deleteSuccess)
|
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{
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logger.Debug($"ARP entry deleted successfully for {ipAddr}");
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// 第二步：使用Ping类重新刷新ARP缓存
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RefreshArpWithPing(ipAddr);
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}
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else
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{
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logger.Warn($"Failed to delete ARP entry for {ipAddr}, but continuing with ping refresh");
|
||||
// 即使删除失败，也尝试ping刷新
|
||||
RefreshArpWithPing(ipAddr);
|
||||
}
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
logger.Error($"Failed to execute ARP flush for {ipAddr}: {ex.Message}");
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 删除ARP条目
|
||||
/// </summary>
|
||||
/// <param name="ipAddr">目标IP地址</param>
|
||||
/// <returns>是否成功删除</returns>
|
||||
private bool DeleteArpEntry(string ipAddr)
|
||||
{
|
||||
try
|
||||
{
|
||||
string command;
|
||||
string arguments;
|
||||
|
||||
if (OperatingSystem.IsWindows())
|
||||
{
|
||||
// Windows: arp -d <ip>
|
||||
command = "arp";
|
||||
arguments = $"-d {ipAddr}";
|
||||
}
|
||||
else if (OperatingSystem.IsLinux() || OperatingSystem.IsMacOS())
|
||||
{
|
||||
// Linux/macOS: 优先使用 ip 命令删除
|
||||
if (IsCommandAvailable("ip"))
|
||||
{
|
||||
command = "ip";
|
||||
arguments = $"neigh del {ipAddr}";
|
||||
}
|
||||
else if (IsCommandAvailable("arp"))
|
||||
{
|
||||
command = "arp";
|
||||
arguments = $"-d {ipAddr}";
|
||||
}
|
||||
else
|
||||
{
|
||||
logger.Warn("Neither 'ip' nor 'arp' command is available for ARP entry deletion");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
logger.Warn($"Unsupported operating system for ARP entry deletion");
|
||||
return false;
|
||||
}
|
||||
|
||||
return ExecuteCommand(command, arguments, $"delete ARP entry for {ipAddr}");
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
logger.Error($"Error deleting ARP entry for {ipAddr}: {ex.Message}");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 检查系统命令是否可用
|
||||
/// </summary>
|
||||
/// <param name="command">命令名称</param>
|
||||
/// <returns>命令是否可用</returns>
|
||||
private bool IsCommandAvailable(string command)
|
||||
{
|
||||
try
|
||||
{
|
||||
var process = new System.Diagnostics.Process
|
||||
{
|
||||
StartInfo = new System.Diagnostics.ProcessStartInfo
|
||||
{
|
||||
FileName = OperatingSystem.IsWindows() ? "where" : "which",
|
||||
Arguments = command,
|
||||
UseShellExecute = false,
|
||||
RedirectStandardOutput = true,
|
||||
CreateNoWindow = true
|
||||
}
|
||||
};
|
||||
|
||||
process.Start();
|
||||
process.WaitForExit(1000); // 1秒超时
|
||||
return process.ExitCode == 0;
|
||||
}
|
||||
catch
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 执行系统命令
|
||||
/// </summary>
|
||||
/// <param name="command">命令</param>
|
||||
/// <param name="arguments">参数</param>
|
||||
/// <param name="operation">操作描述</param>
|
||||
/// <returns>是否成功执行</returns>
|
||||
private bool ExecuteCommand(string command, string arguments, string operation)
|
||||
{
|
||||
try
|
||||
{
|
||||
var process = new System.Diagnostics.Process
|
||||
{
|
||||
StartInfo = new System.Diagnostics.ProcessStartInfo
|
||||
{
|
||||
FileName = command,
|
||||
Arguments = arguments,
|
||||
UseShellExecute = false,
|
||||
RedirectStandardOutput = true,
|
||||
RedirectStandardError = true,
|
||||
CreateNoWindow = true
|
||||
}
|
||||
};
|
||||
|
||||
process.Start();
|
||||
|
||||
// 设置超时时间，避免进程挂起
|
||||
if (process.WaitForExit(5000)) // 5秒超时
|
||||
{
|
||||
var output = process.StandardOutput.ReadToEnd();
|
||||
var error = process.StandardError.ReadToEnd();
|
||||
|
||||
if (process.ExitCode == 0)
|
||||
{
|
||||
logger.Debug($"Command executed successfully: {operation}");
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
logger.Warn($"Command failed: {operation}. Exit code: {process.ExitCode}, Error: {error}");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
process.Kill();
|
||||
logger.Warn($"Command timed out: {operation}");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
logger.Error($"Failed to execute command for {operation}: {ex.Message}");
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
|
||||
Reference in New Issue
Block a user