用于网络监控的技术/ API /技术是什么?

时间:2013-02-12 16:59:24

标签: driver ndis network-monitoring kernel-mode filter-driver

好的,我正在构建一个实用程序来监视文件系统,注册表和网络活动(过程明智;只有选定进程的活动)。我通过开发一个minifilter驱动程序完成了文件系统和注册表活动部分。但是,我不知道该如何为网络做这件事。我想做的就像sysinternal的TCPView一样,但是我只想监视所选进程的ESTABLISHED连接。以下是我想要实时获取每个连接的内容:

- 协议(TCP或UDP)

-source port

-remote IP and port

- [可选]从监视开始时起在特定连接上传输的字节数

我应该用什么?我听说过LSPs,但是进一步阅读它我意识到编写正常运行的LSP非常困难,更不用说他们几乎没有任何材料可以从头开始学习了。他们也变得过时了。问题是我只有大约2-3周的时间来学习+编写这个模块。由于时间限制,我当然不想去寻找像WFP这样的东西,除非有一个非常好的教程,并且我不是在谈论MSDN文档。我不知道这是否可以使用NDIS等轻松完成。

无论如何,我应该怎么做,我应该把重点放在哪里。我应该承担学习LSP的风险,还是NDIS完成任务或其他事情。我现在有点无能为力。帮帮我吧!

2 个答案:

答案 0 :(得分:2)

查看GetExtendedTcpTableGetExtendedUdpTable。这些API将为您提供所需的大部分内容。但为了让事情变得有趣,我编写的演示代码改为使用GetTcp6Table2

#define WIN32_LEAN_AND_MEAN
#define UNICODE
#define _UNICODE

#include <windows.h>
#include <winsock2.h>
#include <Ws2tcpip.h>
#include <iphlpapi.h>
#include <Tcpestats.h>
#include <Tcpmib.h>
#include <Mstcpip.h>
#include <stdlib.h>
#include <stdio.h>

#pragma comment(lib, "iphlpapi.lib")
#pragma comment(lib, "ws2_32.lib")

PCWSTR
StringFromState(MIB_TCP_STATE State)
{
    switch (State)
    {
        case MIB_TCP_STATE_CLOSED:
            return L"CLOSED";
        case MIB_TCP_STATE_LISTEN:
            return L"LISTEN";
        case MIB_TCP_STATE_SYN_SENT:
            return L"SYN_SENT";
        case MIB_TCP_STATE_SYN_RCVD:
            return L"SYN_RCVD";
        case MIB_TCP_STATE_ESTAB:
            return L"ESTAB";
        case MIB_TCP_STATE_FIN_WAIT1:
            return L"FIN_WAIT1";
        case MIB_TCP_STATE_FIN_WAIT2:
            return L"FIN_WAIT2";
        case MIB_TCP_STATE_CLOSE_WAIT:
            return L"CLOSE_WAIT";
        case MIB_TCP_STATE_CLOSING:
            return L"CLOSING";
        case MIB_TCP_STATE_LAST_ACK:
            return L"LAST_ACK";
        case MIB_TCP_STATE_TIME_WAIT:
            return L"TIME_WAIT";
        case MIB_TCP_STATE_DELETE_TCB:
            return L"DELETE_TCB";
        default:
            return L"[Unknown]";
    }
}

LPWSTR (NTAPI *pRtlIpv6AddressToStringW)(const IN6_ADDR *, LPWSTR);

int __cdecl main()
{
    ULONG r;

    // We need to load this dynamically, because ntdll.lib doesn't export it
    HMODULE ntdll = LoadLibrary(L"ntdll");
    pRtlIpv6AddressToStringW = (decltype(pRtlIpv6AddressToStringW))GetProcAddress(ntdll, "RtlIpv6AddressToStringW");

    // Initial guess for the table size
    ULONG cbTable = 100;
    MIB_TCP6TABLE2 *table = nullptr;
    while (true)
    {
        table = (MIB_TCP6TABLE2*)malloc(cbTable);
        if (!table)
            return 1;
        r = GetTcp6Table2(table, &cbTable, FALSE);
        if (ERROR_INSUFFICIENT_BUFFER == r)
        {
            // Try again with bigger buffer
            free(table);
            continue;
        }
        else if (ERROR_SUCCESS == r)
        {
            break;
        }
        else
        {
            free(table);
            wprintf(L"GetTcp6Table2 = %u\n", r);
            return 1;
        }
    }

    // Print table heading
    wprintf(L"%56s %56s %10s %6s\n", L"Local endpoint", L"Remote endpoint", L"State", L"PID");
    for (ULONG i = 0; i < table->dwNumEntries; i++)
    {
        MIB_TCP6ROW2 const &entry = table->table[i];

        WCHAR localAddr[46];
        WCHAR remoteAddr[46];
        pRtlIpv6AddressToStringW(&entry.LocalAddr, localAddr);
        pRtlIpv6AddressToStringW(&entry.RemoteAddr, remoteAddr);

        WCHAR localEndpoint[56];
        WCHAR remoteEndpoint[56];
        swprintf_s(localEndpoint,  L"[%s]:%-5u", localAddr,  ntohs(entry.dwLocalPort));
        swprintf_s(remoteEndpoint, L"[%s]:%-5u", remoteAddr, ntohs(entry.dwRemotePort));

        wprintf(L"%56s %56s %10s %6u\n",
                localEndpoint, remoteEndpoint,
                StringFromState(entry.State),
                entry.dwOwningPid);
    }

    free(table);
    return 0;
}

示例输出(匿名的实际地址):

C:\>test.exe
                              Local endpoint                              Remote endpoint     State  PID
                                  [::]:80                                      [::]:0        LISTEN    4
                                  [::]:135                                     [::]:0        LISTEN  980
                                  [::]:445                                     [::]:0        LISTEN    4
                                  [::]:1025                                    [::]:0        LISTEN  692
[2001:xxxx:x:xxx:x:xxxx:xxx.xx.xxx.xx]:6044                 [xxxx:xxx:xxxx:xxxx::x]:443       ESTAB 3248
[2001:xxxx:x:xxx:x:xxxx:xxx.xx.xxx.xx]:6045                 [xxxx:xxx:xxxx:xxxx::x]:443       ESTAB 3248
  [2001:xxxx:xx:x:xxxx:xxxx:xxxx:xxxx]:53759 [2001:xxxx:xx:xxxx:xxx:xxxx:xxxx:xxxx]:135   TIME_WAIT    0

答案 1 :(得分:0)

听起来像你想要的东西,比如wirehark使用的winpcap。

http://www.winpcap.org/

来自ReactOS的netstat代码也可能很有趣

http://doxygen.reactos.org/dd/d3f/netstat_8c_source.html