1                 : /**********************************************************************
       2                 :  * $Id: cpl_spawn.cpp 25133 2012-10-15 20:40:26Z rouault $
       3                 :  *
       4                 :  * Project:  CPL - Common Portability Library
       5                 :  * Purpose:  Implement CPLSystem().
       6                 :  * Author:   Even Rouault, <even dot rouault at mines dash paris dot org>
       7                 :  *
       8                 :  **********************************************************************
       9                 :  * Copyright (c) 2012,Even Rouault
      10                 :  *
      11                 :  * Permission is hereby granted, free of charge, to any person obtaining a
      12                 :  * copy of this software and associated documentation files (the "Software"),
      13                 :  * to deal in the Software without restriction, including without limitation
      14                 :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      15                 :  * and/or sell copies of the Software, and to permit persons to whom the
      16                 :  * Software is furnished to do so, subject to the following conditions:
      17                 :  * 
      18                 :  * The above copyright notice and this permission notice shall be included
      19                 :  * in all copies or substantial portions of the Software.
      20                 :  * 
      21                 :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      22                 :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      23                 :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
      24                 :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      25                 :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      26                 :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
      27                 :  * DEALINGS IN THE SOFTWARE.
      28                 :  ****************************************************************************/
      29                 : 
      30                 : #include "cpl_conv.h"
      31                 : 
      32                 : CPL_CVSID("$Id: cpl_spawn.cpp 25133 2012-10-15 20:40:26Z rouault $");
      33                 : 
      34                 : #if defined(WIN32)
      35                 : 
      36                 : #include <windows.h>
      37                 : 
      38                 : /************************************************************************/
      39                 : /*                            CPLSystem()                               */
      40                 : /************************************************************************/
      41                 : 
      42                 : /**
      43                 :  * Runs an executable in another process.
      44                 :  *
      45                 :  * This function runs an executable, wait for it to finish and returns
      46                 :  * its exit code.
      47                 :  *
      48                 :  * It is implemented as CreateProcess() on Windows platforms, and system()
      49                 :  * on other platforms.
      50                 :  *
      51                 :  * @param pszApplicationName the lpApplicationName for Windows (might be NULL),
      52                 :  *                           or ignored on other platforms.
      53                 :  * @param pszCommandLine the command line, starting with the executable name 
      54                 :  *
      55                 :  * @return the exit code of the spawned process, or -1 in case of error.
      56                 :  */
      57                 : 
      58                 : int CPLSystem( const char* pszApplicationName, const char* pszCommandLine )
      59                 : {
      60                 :     int nRet = -1;
      61                 :     PROCESS_INFORMATION processInfo;
      62                 :     STARTUPINFO startupInfo;
      63                 :     ZeroMemory( &processInfo, sizeof(PROCESS_INFORMATION) );
      64                 :     ZeroMemory( &startupInfo, sizeof(STARTUPINFO) );
      65                 :     startupInfo.cb = sizeof(STARTUPINFO);
      66                 : 
      67                 :     char* pszDupedCommandLine = (pszCommandLine) ? CPLStrdup(pszCommandLine) : NULL;
      68                 : 
      69                 :     if( !CreateProcess( pszApplicationName, 
      70                 :                         pszDupedCommandLine, 
      71                 :                         NULL,
      72                 :                         NULL,
      73                 :                         FALSE,
      74                 :                         CREATE_NO_WINDOW|NORMAL_PRIORITY_CLASS,
      75                 :                         NULL,
      76                 :                         NULL,
      77                 :                         &startupInfo,
      78                 :                         &processInfo) )
      79                 :     {
      80                 :         DWORD err = GetLastError();
      81                 :         CPLDebug("CPL", "'%s' failed : err = %d", pszCommandLine, err);
      82                 :         nRet = -1;
      83                 :     }
      84                 :     else
      85                 :     {
      86                 :         WaitForSingleObject( processInfo.hProcess, INFINITE );
      87                 : 
      88                 :         DWORD exitCode;
      89                 : 
      90                 :         // Get the exit code.
      91                 :         int err = GetExitCodeProcess(processInfo.hProcess, &exitCode);
      92                 : 
      93                 :         CloseHandle(processInfo.hProcess);
      94                 :         CloseHandle(processInfo.hThread);
      95                 : 
      96                 :         if( !err )
      97                 :         {
      98                 :             CPLDebug("CPL", "GetExitCodeProcess() failed : err = %d", err);
      99                 :         }
     100                 :         else
     101                 :             nRet = exitCode;
     102                 :     }
     103                 : 
     104                 :     CPLFree(pszDupedCommandLine);
     105                 : 
     106                 :     return nRet;
     107                 : }
     108                 : 
     109                 : #else
     110                 : 
     111                 : /************************************************************************/
     112                 : /*                            CPLSystem()                               */
     113                 : /************************************************************************/
     114                 : 
     115               4 : int CPLSystem( const char* pszApplicationName, const char* pszCommandLine )
     116                 : {
     117               4 :     return system(pszCommandLine);
     118                 : }
     119                 : 
     120                 : #endif