写一个WFP驱动，拦截网络

WFP (Windows Filtering Platform) 是 Windows 操作系统中的一个网络过滤框架，可以用来拦截网络数据包。

要写一个 WFP 驱动，需要先学习 Windows 驱动开发的相关知识，了解 WFP 的工作原理和使用方法。

简单地说，WFP 驱动的开发步骤如下：
1. 实现 WFP 驱动的核心功能
2. 在 Windows 中注册驱动
3. 在 WFP 中注册过滤器
4. 实现数据包的拦截和处理

WFP 驱动的编写需要较高的技术水平，如果不熟悉驱动开发，建议先学习相关知识。

相关问题

写一个WFP驱动，拦截网络的代码

WFP (Windows Filtering Platform) 是 Windows 操作系统的一个高级网络过滤系统。以下是一段示例代码，用于拦截网络：

#include <Windows.h>
#include <fltuser.h>

#pragma comment(lib, "Fltlib.lib")

void DriverUnload(PDRIVER_OBJECT DriverObject)
{
    UNREFERENCED_PARAMETER(DriverObject);
}

NTSTATUS FilterConnect(PFLT_PORT ClientPort, PVOID ServerPortCookie, PVOID ConnectionContext, ULONG SizeOfContext, PVOID *ConnectionCookie)
{
    UNREFERENCED_PARAMETER(ClientPort);
    UNREFERENCED_PARAMETER(ServerPortCookie);
    UNREFERENCED_PARAMETER(ConnectionContext);
    UNREFERENCED_PARAMETER(SizeOfContext);
    UNREFERENCED_PARAMETER(ConnectionCookie);

    return STATUS_SUCCESS;
}

NTSTATUS FilterDisconnect(PVOID ConnectionCookie)
{
    UNREFERENCED_PARAMETER(ConnectionCookie);

    return STATUS_SUCCESS;
}

NTSTATUS FilterMessage(PVOID ConnectionCookie, PVOID InputBuffer, ULONG InputBufferLength, PVOID OutputBuffer, ULONG OutputBufferLength, PULONG ReturnOutputBufferLength)
{
    UNREFERENCED_PARAMETER(ConnectionCookie);
    UNREFERENCED_PARAMETER(InputBuffer);
    UNREFERENCED_PARAMETER(InputBufferLength);
    UNREFERENCED_PARAMETER(OutputBuffer);
    UNREFERENCED_PARAMETER(OutputBufferLength);
    UNREFERENCED_PARAMETER(ReturnOutputBufferLength);

    return STATUS_SUCCESS;
}

NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)
{
    NTSTATUS status = STATUS_SUCCESS;
    UNICODE_STRING PortName = RTL_CONSTANT_STRING(L"\\MyFilterPort");
    PFLT_PORT ServerPort = NULL;
    PFLT_FILTER Filter = NULL;

    DriverObject->DriverUnload = DriverUnload;

    status = FltRegisterFilter(DriverObject, &FilterRegistration, &Filter);
    if (!NT_SUCCESS(status))
    {
        goto Cleanup;
    }

    status = FltBuildDefaultSecurityDescriptor(&Filter->SecurityDescriptor, FLT_PORT_ALL_ACCESS);
    if (!NT_SUCCESS(status))
    {
        goto Cleanup;
    }

    status = FltCreateCommunicationPort(Filter, &ServerPort, &PortCommunication, FilterConnect, FilterDisconnect, FilterMessage, 1);
    if (!NT_SUCCESS(status))

帮我写一个WFP 的demo

好的，我可以为您提供一个 WFP 的 demo，您可以参考以下代码：

#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <wfp.h>

#pragma comment(lib, "Fwpkclnt.lib")

int main(int argc, char* argv[])
{
FWPM_SESSION session = { };
FWPM_FILTER filter = { };
FWPM_FILTER_CONDITION filterConditions[1] = { };
FWPM_PROVIDER provider = { };
FWPM_SUBLAYER subLayer = { };
HANDLE engineHandle = NULL;
UINT64 filterId = ;
DWORD errorCode = ERROR_SUCCESS;

// 初始化 WFP 引擎
errorCode = FwpmEngineOpen(NULL, RPC_C_AUTHN_WINNT, NULL, &session, &engineHandle);
if (errorCode != ERROR_SUCCESS)
{
printf("Failed to open WFP engine. Error code: %d\n", errorCode);
return -1;
}

// 创建 WFP 提供程序
provider.displayData.name = L"My WFP Provider";
provider.displayData.description = L"Demo WFP Provider";
provider.providerKey = (GUID) { x12345678, x1234, x1234, { x12, x34, x12, x34, x12, x34, x12, x34 } };
errorCode = FwpmProviderAdd(engineHandle, &provider, NULL);
if (errorCode != ERROR_SUCCESS)
{
printf("Failed to add WFP provider. Error code: %d\n", errorCode);
FwpmEngineClose(engineHandle);
return -1;
}

// 创建 WFP 子层
subLayer.displayData.name = L"My WFP SubLayer";
subLayer.displayData.description = L"Demo WFP SubLayer";
subLayer.subLayerKey = (GUID) { x12345678, x1234, x1234, { x12, x34, x12, x34, x12, x34, x12, x34 } };
subLayer.weight = FWP_EMPTY;
errorCode = FwpmSubLayerAdd(engineHandle, &subLayer, NULL);
if (errorCode != ERROR_SUCCESS)
{
printf("Failed to add WFP sublayer. Error code: %d\n", errorCode);
FwpmProviderDeleteByKey(engineHandle, &provider.providerKey);
FwpmEngineClose(engineHandle);
return -1;
}

// 创建 WFP 过滤器条件
filterConditions[].fieldKey = FWPM_CONDITION_IP_REMOTE_ADDRESS;
filterConditions[].matchType = FWP_MATCH_EQUAL;
filterConditions[].conditionValue.type = FWP_BYTE_ARRAY16_TYPE;
filterConditions[].conditionValue.byteArray16 = (FWP_BYTE_ARRAY16) { x01, x02, x03, x04, x05, x06, x07, x08, x09, xA, xB, xC, xD, xE, xF, x10 };

// 创建 WFP 过滤器
filter.providerKey = provider.providerKey;
filter.subLayerKey = subLayer.subLayerKey;
filter.displayData.name = L"My WFP Filter";
filter.displayData.description = L"Demo WFP Filter";
filter.action.type = FWP_ACTION_BLOCK;
filter.weight.type = FWP_EMPTY;
filter.filterCondition = filterConditions;
filter.numFilterConditions = ARRAYSIZE(filterConditions);
errorCode = FwpmFilterAdd(engineHandle, &filter, NULL, &filterId);
if (errorCode != ERROR_SUCCESS)
{
printf("Failed to add WFP filter. Error code: %d\n", errorCode);
FwpmSubLayerDeleteByKey(engineHandle, &subLayer.subLayerKey);
FwpmProviderDeleteByKey(engineHandle, &provider.providerKey);
FwpmEngineClose(engineHandle);
return -1;
}

// 关闭 WFP 引擎
FwpmFilterDeleteById(engineHandle, filterId);
FwpmSubLayerDeleteByKey(engineHandle, &subLayer.subLayerKey);
FwpmProviderDeleteByKey(engineHandle, &provider.providerKey);
FwpmEngineClose(engineHandle);

return ;
}