PC/w9xpopen.c

   1 /*
   2  * w9xpopen.c
   3  *
   4  * Serves as an intermediate stub Win32 console application to
   5  * avoid a hanging pipe when redirecting 16-bit console based
   6  * programs (including MS-DOS console based programs and batch
   7  * files) on Window 95 and Windows 98.
   8  *
   9  * This program is to be launched with redirected standard
  10  * handles. It will launch the command line specified 16-bit
  11  * console based application in the same console, forwarding
  12  * it's own redirected standard handles to the 16-bit child.
  13
  14  * AKA solution to the problem described in KB: Q150956.
  15  */
  16
  17 #define WINDOWS_LEAN_AND_MEAN
  18 #include <windows.h>
  19
  20 const char *usage =
  21 "This program is used by Python's os.pipe function to\n"
  22 "to work around a limitation in Windows 95/98.  It is\n"
  23 "not designed to be used as stand-alone program.";
  24
  25 int main(int argc, char *argv[])
  26 {
  27     BOOL bRet;
  28     STARTUPINFO si;
  29     PROCESS_INFORMATION pi;
  30     DWORD exit_code=0;
  31
  32     if (argc != 2) {
  33         MessageBox(NULL, usage, argv[0], MB_OK);
  34         return 1;
  35     }
  36
  37     /* Make child process use this app's standard files. */
  38     ZeroMemory(&si, sizeof si);
  39     si.cb = sizeof si;
  40     si.dwFlags = STARTF_USESTDHANDLES;
  41     si.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
  42     si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
  43     si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
  44
  45     bRet = CreateProcess(
  46         NULL, argv[1],
  47         NULL, NULL,
  48         TRUE, 0,
  49         NULL, NULL,
  50         &si, &pi
  51         );
  52
  53     if (bRet) {
  54         if (WaitForSingleObject(pi.hProcess, INFINITE) != WAIT_FAILED) {
  55             GetExitCodeProcess(pi.hProcess, &exit_code);
  56         }
  57         CloseHandle(pi.hProcess);
  58         CloseHandle(pi.hThread);
  59         return exit_code;
  60     }
  61
  62     return 1;
  63 }