A: 新增ExceptionExpand异常处理类及相关枚举 (Infrastructure/ExceptionExpand.cs)

A: 新增全局Process缓存类 (Infrastructure/GlobalCaches/ProcessCache.cs)
A: 新增WinDivert封装和PacketSniffer数据包捕获功能 (WinDivertNet/WinDivertWrapper)
A: 新增Todo文档 (ClientApp/doc/Todo.md)
U: 配置生成路由显示 (ClientApp/src/constants/app.ts)
U: WebPanel新增数据包捕获触发逻辑 (Shell/Views/WebPanel.xaml.cs)
U: 配置Shell项目加载WinDivert相关文件 (Shell/Shell.csproj)
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jimmy committed 2025-05-18 22:10:03 +08:00
1 parent 078e59ae6b
commit ad2514e044
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namespace WinDivertNet.WinDivertWrapper;
using System;
using System.Runtime.InteropServices;
public static class PacketSniffer
{
public static void Start()
{
Console.WriteLine($"进入 12313 ");
var handle = WinDivert.Open("true", WinDivert.WINDIVERT_LAYER_NETWORK, 0, WinDivert.WINDIVERT_FLAG_SNIFF);
byte[] buffer = new byte[65535];
WinDivert.WINDIVERT_ADDRESS addr = default;
uint readLen = 0;
while (true)
{
try
{
if (WinDivert.Recv(handle, buffer, (uint)buffer.Length, ref addr, ref readLen))
{
ParsePacketAndLog(buffer, readLen, addr);
}
}
catch (Exception ex)
{
Console.WriteLine($"接收数据包时出错: {ex.Message}");
}
}
void ParsePacketAndLog(byte[] buffer, uint length, WinDivert.WINDIVERT_ADDRESS addr)
{
if (buffer == null || length == 0)
return;
try
{
// IPv4 数据包的最小长度为 20 字节
if (length >= 20)
{
// 检查版本 (IPv4 = 4, 位于第一个字节的高 4 位)
int version = (buffer[0] >> 4) & 0xF;
if (version == 4) // IPv4
{
int headerLength = (buffer[0] & 0xF) * 4; // IHL * 4 = 字节数
byte protocol = buffer[9]; // 协议字段
// 源 IP 和目标 IP
uint srcIp = (uint)((buffer[12]) | (buffer[13] << 8) | (buffer[14] << 16) | (buffer[15] << 24));
uint dstIp = (uint)((buffer[16]) | (buffer[17] << 8) | (buffer[18] << 16) | (buffer[19] << 24));
string srcIpStr = $"{buffer[12]}.{buffer[13]}.{buffer[14]}.{buffer[15]}";
string dstIpStr = $"{buffer[16]}.{buffer[17]}.{buffer[18]}.{buffer[19]}";
Console.WriteLine($"IPv4: Src={srcIpStr}, Dst={dstIpStr}, Protocol={protocol}");
// 如果有足够的数据,解析 TCP 或 UDP
if (length >= (uint)(headerLength + 4) && (protocol == 6 || protocol == 17))
{
// 获取端口 (TCP 和 UDP 的前 4 字节都是源端口和目标端口)
int offset = headerLength;
ushort srcPort = (ushort)((buffer[offset] << 8) | buffer[offset + 1]);
ushort dstPort = (ushort)((buffer[offset + 2] << 8) | buffer[offset + 3]);
if (protocol == 6) // TCP
{
Console.WriteLine($"TCP: SrcPort={srcPort}, DstPort={dstPort}");
}
else if (protocol == 17) // UDP
{
Console.WriteLine($"UDP: SrcPort={srcPort}, DstPort={dstPort}");
}
}
}
else if (version == 6 && length >= 40) // IPv6 (头部固定 40 字节)
{
// IPv6 解析代码...
// 这里略过,需要时可以添加
}
}
}
catch (Exception ex)
{
Console.WriteLine($"解析数据包时出错: {ex.Message}");
}
} }
}