177 lines
3.9 KiB
C
177 lines
3.9 KiB
C
|
|
/******************************************************************************\
|
|
* This is a part of the Microsoft Source Code Samples.
|
|
* Copyright 1992 - 1997 Microsoft Corporation.
|
|
* All rights reserved.
|
|
* This source code is only intended as a supplement to
|
|
* Microsoft Development Tools and/or WinHelp documentation.
|
|
* See these sources for detailed information regarding the
|
|
* Microsoft samples programs.
|
|
\******************************************************************************/
|
|
|
|
/*++
|
|
|
|
Copyright 1992 - 1997 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
SrvChild.c
|
|
|
|
Abstract:
|
|
|
|
The server component of Remote. It spawns a child process
|
|
and redirects the stdin/stdout/stderr of child to itself.
|
|
Waits for connections from clients - passing the
|
|
output of child process to client and the input from clients
|
|
to child process.
|
|
|
|
Author:
|
|
|
|
Rajivendra Nath 2-Jan-1992
|
|
Dave Hart 30 May 1997 split from Server.c
|
|
|
|
Environment:
|
|
|
|
Console App. User mode.
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include <windows.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <process.h>
|
|
#include <io.h>
|
|
#include <string.h>
|
|
#include "Remote.h"
|
|
#include "Server.h"
|
|
|
|
|
|
VOID
|
|
FASTCALL
|
|
StartChildOutPipeRead(
|
|
VOID
|
|
)
|
|
{
|
|
ReadChildOverlapped.OffsetHigh =
|
|
ReadChildOverlapped.Offset = 0;
|
|
|
|
if ( ! ReadFileEx(
|
|
hReadChildOutput,
|
|
ReadChildBuffer,
|
|
sizeof(ReadChildBuffer) - 1, // allow for null term
|
|
&ReadChildOverlapped,
|
|
ReadChildOutputCompleted
|
|
)) {
|
|
|
|
if (INVALID_HANDLE_VALUE != hWriteChildStdIn) {
|
|
|
|
CANCELIO( hWriteChildStdIn );
|
|
CloseHandle( hWriteChildStdIn );
|
|
hWriteChildStdIn = INVALID_HANDLE_VALUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
WINAPI
|
|
ReadChildOutputCompleted(
|
|
DWORD dwError,
|
|
DWORD cbRead,
|
|
LPOVERLAPPED lpO
|
|
)
|
|
{
|
|
UNREFERENCED_PARAMETER(lpO);
|
|
|
|
//
|
|
// We can get called after hWriteTempFile
|
|
// is closed after the child has exited.
|
|
//
|
|
|
|
if (! dwError &&
|
|
INVALID_HANDLE_VALUE != hWriteTempFile) {
|
|
|
|
//
|
|
// Start a write to the temp file.
|
|
//
|
|
|
|
ReadChildOverlapped.OffsetHigh = 0;
|
|
ReadChildOverlapped.Offset = dwWriteFilePointer;
|
|
|
|
if ( ! WriteFileEx(
|
|
hWriteTempFile,
|
|
ReadChildBuffer,
|
|
cbRead,
|
|
&ReadChildOverlapped,
|
|
WriteTempFileCompleted
|
|
)) {
|
|
|
|
dwError = GetLastError();
|
|
|
|
if (ERROR_DISK_FULL == dwError) {
|
|
|
|
printf("Remote: disk full writing temp file %s, exiting\n", SaveFileName);
|
|
|
|
if (INVALID_HANDLE_VALUE != hWriteChildStdIn) {
|
|
|
|
CANCELIO( hWriteChildStdIn );
|
|
CloseHandle( hWriteChildStdIn );
|
|
hWriteChildStdIn = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
} else {
|
|
|
|
ErrorExit("WriteFileEx for temp file failed.");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
VOID
|
|
WINAPI
|
|
WriteTempFileCompleted(
|
|
DWORD dwError,
|
|
DWORD cbWritten,
|
|
LPOVERLAPPED lpO
|
|
)
|
|
{
|
|
UNREFERENCED_PARAMETER(lpO);
|
|
|
|
if (dwError) {
|
|
|
|
if (ERROR_DISK_FULL == dwError) {
|
|
|
|
printf("Remote: disk full writing temp file %s, exiting\n", SaveFileName);
|
|
|
|
if (INVALID_HANDLE_VALUE != hWriteChildStdIn) {
|
|
|
|
CANCELIO( hWriteChildStdIn );
|
|
CloseHandle( hWriteChildStdIn );
|
|
hWriteChildStdIn = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
return;
|
|
|
|
} else {
|
|
|
|
SetLastError(dwError);
|
|
ErrorExit("WriteTempFileCompleted may need work");
|
|
}
|
|
}
|
|
|
|
dwWriteFilePointer += cbWritten;
|
|
|
|
TRACE(CHILD, ("Wrote %d bytes to temp file\n", cbWritten));
|
|
|
|
StartServerToClientFlow();
|
|
|
|
//
|
|
// Start another read against the child input.
|
|
//
|
|
|
|
StartChildOutPipeRead();
|
|
}
|