局域网行为监控软件 C# 多线程数据包捕获算法：基于 KMP 模式匹配的内容分析优化方案探索

using System;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace NetworkMonitor
{
    // KMP模式匹配器
    public class KmpMatcher
    {
        // 省略与原文重复的实现代码，保留核心逻辑结构
        private readonly string _pattern;
        private readonly int[] _partialMatchTable;
        // 构建部分匹配表
        private int[] BuildPartialMatchTable(string pattern) { /*...*/ }
        // KMP匹配方法
        public bool Match(byte[] text, Encoding encoding = null) { /*...*/ }
        public bool Match(string text) { /*...*/ }
    }
    // 数据包捕获器
    public class PacketCapturer : IDisposable
    {
        private readonly Socket _socket;
        private readonly Thread _captureThread;
        private readonly CancellationTokenSource _cancellationTokenSource;
        private readonly List<Action<byte[]>> _packetHandlers;
        private readonly List<string> _sensitiveKeywords;
        private readonly List<KmpMatcher> _matchers;
        // 初始化及核心方法
        public PacketCapturer() { /*...*/ }
        public void RegisterPacketHandler(Action<byte[]> handler) { /*...*/ }
        private void CapturePackets() { /*...*/ }
        private void ProcessPacket(byte[] packet) { /*...*/ }
        private void CheckForSensitiveContent(string sourceIp, string destIp, byte protocol, byte[] data) { /*...*/ }
        protected virtual void OnSensitiveContentDetected(string sourceIp, string destIp, string protocol, byte[] data) { /*...*/ }
        public void Dispose() { /*...*/ }
    }
    // 局域网行为监控软件主类
    public class NetworkBehaviorMonitor
    {
        private readonly PacketCapturer _capturer;
        private readonly Logger _logger;
        private readonly TrafficAnalyzer _analyzer;
        private readonly NotificationService _notificationService;
        public NetworkBehaviorMonitor() { /*...*/ }
        private void HandlePacket(byte[] packet) { /*...*/ }
        public void StartMonitoring() { /*...*/ }
        public void StopMonitoring() { /*...*/ }
    }
    // 日志记录器
    public class Logger
    {
        public void LogPacket(byte[] packet) { /*...*/ }
        public void LogEvent(string message) { /*...*/ }
    }
    // 流量分析器
    public class TrafficAnalyzer
    {
        public void AnalyzePacket(byte[] packet) { /*...*/ }
    }
    // 通知服务
    public class NotificationService
    {
        public void SendNotification(string title, string message) { /*...*/ }
    }
    // 程序入口
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("局域网行为监控软件 - C#多线程数据包捕获系统");
            Console.WriteLine("==========================================");
            using (var monitor = new NetworkBehaviorMonitor())
            {
                monitor.StartMonitoring();
                Console.WriteLine("按任意键停止监控...");
                Console.ReadKey();
                monitor.StopMonitoring();
            }
        }
    }
}