vc 利用无名管道 控制台程序实现cmd功能

#include "stdafx.h"#include <windows.h>//进程间通信//管道typedef struct tagParam{    HANDLE  hWritePipe;    HANDLE  hReadPipe;}PARAM, *LPPARAM;int ThreadFunc(LPVOID param){    char szBuf[4096];    DWORD dwReadBytes = 0;    char  strShellPath[MAX_PATH] = { 0 };    DWORD dwBytesRead;    DWORD dwTotalBytesAvail;    BOOL bRet = FALSE;    LPVOID lpBuffer = NULL;    HANDLE hReadPipe = ((LPPARAM)param)->hReadPipe;    HANDLE hWritePipe = ((LPPARAM)param)->hWritePipe;    while (TRUE)    {        bRet = PeekNamedPipe(hReadPipe, szBuf, sizeof(4096), &dwBytesRead, &dwTotalBytesAvail, NULL);        if (bRet)        {            if (dwBytesRead <= 0)            {                continue;            }            memset(szBuf, 0, sizeof(szBuf));            lpBuffer = (LPBYTE)LocalAlloc(LPTR, dwTotalBytesAvail + 1);            if (lpBuffer == NULL)            {                break;            }            memset(lpBuffer, 0, dwTotalBytesAvail + 1);            ReadFile(hReadPipe, lpBuffer, dwTotalBytesAvail, &dwBytesRead, NULL);            if (!bRet)            {                if (lpBuffer != NULL)                {                    LocalFree(lpBuffer);                    lpBuffer = NULL;                }                break;            }            printf("%s", lpBuffer);        }    }    return  0;}int main(int argc, char* argv[]){HANDLE hCmdReadPipe = NULL;    HANDLE hReadPipe = NULL;HANDLE hCmdWritePipe = NULL;    HANDLE hWritePipe = NULL;BOOL fRet = FALSE;    char szBuf[4096];    BOOL bRet = FALSE;    LPVOID lpBuffer = NULL;    PARAM param;    DWORD dwWriteBytes;    SECURITY_ATTRIBUTES  sa = { 0 };    sa.nLength = sizeof(sa);    sa.lpSecurityDescriptor = NULL;    sa.bInheritHandle = TRUE;    fRet = CreatePipe(&hCmdReadPipe, &hWritePipe, &sa, 0);if(!fRet){return GetLastError();}    fRet = CreatePipe(&hReadPipe, &hCmdWritePipe, &sa, 0);    if (!fRet)    {        return GetLastError();    }    STARTUPINFO si;    PROCESS_INFORMATION pi;    memset(&si, 0, sizeof(STARTUPINFO));    memset(&pi, 0, sizeof(PROCESS_INFORMATION));    si.cb = sizeof(STARTUPINFO);    si.hStdInput = hCmdReadPipe;    si.hStdOutput = hCmdWritePipe;    si.hStdError = hCmdWritePipe;    si.wShowWindow = SW_HIDE;    si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;    fRet = CreateProcess(NULL, "cmd", NULL, NULL, TRUE,                                    NORMAL_PRIORITY_CLASS, NULL, NULL, &si, &pi);    if (!fRet)    {        return GetLastError();    }    param.hReadPipe = hReadPipe;    param.hWritePipe = hWritePipe;    CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)ThreadFunc, &param, 0,NULL);    while (TRUE)    {        memset(szBuf, 0, sizeof(szBuf));        gets(szBuf);        strcat(szBuf, "\r\n");        WriteFile(hWritePipe, szBuf, strlen(szBuf), &dwWriteBytes, NULL);    }return 0;}

就是创建两条无名管道，然后本控制台程序与新建的cmd程序进行通讯即可。

这个程序的问题是没有做结束cmd进程的等待事件，然后就是显示的话命令会显示两次，可以考虑设置程序光标的位置来去掉，这里我就不写了，没什么技术含量