src/os2/utilsexc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utilsexec.cpp
   3 // Purpose:     Various utilities
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/17/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16 #include "wx/setup.h"
  17 #include "wx/utils.h"
  18 #include "wx/app.h"
  19 #include "wx/intl.h"
  20 #endif
  21
  22 #include "wx/log.h"
  23
  24 #include "wx/process.h"
  25
  26 #include "wx/os2/private.h"
  27
  28 #define PURE_32
  29 #ifndef __EMX__
  30 #include <upm.h>
  31 #include <netcons.h>
  32 #include <netbios.h>
  33 #endif
  34
  35 #include <ctype.h>
  36 #ifdef __EMX__
  37 #include <dirent.h>
  38 #endif
  39
  40 #include <sys/stat.h>
  41 #include <io.h>
  42
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <errno.h>
  47 #include <stdarg.h>
  48
  49
  50 // this message is sent when the process we're waiting for terminates
  51 #define wxWM_PROC_TERMINATED (WM_USER + 10000)
  52
  53 #ifndef NO_ERROR
  54 #  define NO_ERROR  0
  55 #endif
  56
  57 // structure describing the process we're being waiting for
  58 struct wxExecuteData
  59 {
  60 public:
  61     ~wxExecuteData()
  62     {
  63 //         cout << "Closing thread: " << endl;
  64         DosExit(EXIT_PROCESS, 0);
  65     }
  66
  67     HWND                            hWnd;          // window to send wxWM_PROC_TERMINATED to [not used]
  68     RESULTCODES                     vResultCodes;
  69     wxProcess*                      pHandler;
  70     ULONG                           ulExitCode;    // the exit code of the process
  71     bool                            bState;        // set to FALSE when the process finishes
  72 };
  73
  74 static ULONG wxExecuteThread(
  75   wxExecuteData*                    pData
  76 )
  77 {
  78     ULONG                           ulRc;
  79     PID                             vPidChild;
  80
  81 //     cout << "Executing thread: " << endl;
  82
  83     ulRc = ::DosWaitChild( DCWA_PROCESSTREE
  84                           ,DCWW_NOWAIT
  85                           ,&pData->vResultCodes
  86                           ,&vPidChild
  87                           ,pData->vResultCodes.codeTerminate // process PID to look at
  88                          );
  89     if (ulRc != NO_ERROR)
  90     {
  91         wxLogLastError("DosWaitChild");
  92     }
  93     delete pData;
  94     return 0;
  95 }
  96
  97 // window procedure of a hidden window which is created just to receive
  98 // the notification message when a process exits
  99 MRESULT APIENTRY wxExecuteWindowCbk(
 100   HWND                              hWnd
 101 , ULONG                             ulMessage
 102 , MPARAM                            wParam
 103 , MPARAM                            lParam
 104 )
 105 {
 106     if (ulMessage == wxWM_PROC_TERMINATED)
 107     {
 108         wxExecuteData*              pData = (wxExecuteData *)lParam;
 109
 110         if (pData->pHandler)
 111         {
 112             pData->pHandler->OnTerminate( (int)pData->vResultCodes.codeTerminate
 113                                          ,(int)pData->vResultCodes.codeResult
 114                                         );
 115         }
 116
 117         if (pData->bState)
 118         {
 119             // we're executing synchronously, tell the waiting thread
 120             // that the process finished
 121             pData->bState = 0;
 122         }
 123         else
 124         {
 125             // asynchronous execution - we should do the clean up
 126             delete pData;
 127         }
 128         ::WinDestroyWindow(hWnd);    // we don't need it any more
 129     }
 130     return 0;
 131 }
 132
 133 long wxExecute(
 134   const wxString&                   rCommand
 135 , int                               flags
 136 , wxProcess*                        pHandler
 137 )
 138 {
 139     if (rCommand.IsEmpty())
 140     {
 141 //         cout << "empty command in wxExecute." << endl;
 142         return 0;
 143     }
 144
 145     // create the process
 146     UCHAR                           vLoadError[CCHMAXPATH] = {0};
 147     RESULTCODES                     vResultCodes = {0};
 148     ULONG                           ulExecFlag;
 149     PSZ                             zArgs = NULL;
 150     PSZ                             zEnvs = NULL;
 151     APIRET                          rc;
 152     TID                             vTID;
 153
 154     if (flags & wxEXEC_SYNC)
 155         ulExecFlag = EXEC_SYNC;
 156     else
 157         ulExecFlag = EXEC_ASYNCRESULT;
 158
 159     rc = ::DosExecPgm( (PCHAR)vLoadError
 160                       ,sizeof(vLoadError)
 161                       ,ulExecFlag
 162                       ,zArgs
 163                       ,zEnvs
 164                       ,&vResultCodes
 165                       ,(PSZ)rCommand.c_str()
 166                      );
 167     if (rc != NO_ERROR)
 168     {
 169         wxLogSysError(_("Execution of command '%s' failed with error: %ul"), rCommand.c_str(), rc);
 170         return 0;
 171     }
 172 //     cout << "Executing: " << rCommand.c_str() << endl;
 173     // Alloc data
 174     wxExecuteData*                  pData = new wxExecuteData;
 175
 176     pData->vResultCodes = vResultCodes;
 177     pData->hWnd         = NULLHANDLE;
 178     pData->bState       = (flags & wxEXEC_SYNC) != 0;
 179     if (flags & wxEXEC_SYNC)
 180     {
 181         wxASSERT_MSG(!pHandler, wxT("wxProcess param ignored for sync execution"));
 182         pData->pHandler = NULL;
 183     }
 184     else
 185     {
 186         // may be NULL or not
 187         pData->pHandler = pHandler;
 188     }
 189
 190     rc = ::DosCreateThread( &vTID
 191                            ,(PFNTHREAD)&wxExecuteThread
 192                            ,(ULONG)pData
 193                            ,CREATE_READY|STACK_SPARSE
 194                            ,8192
 195                           );
 196     if (rc != NO_ERROR)
 197     {
 198         wxLogLastError("CreateThread in wxExecute");
 199         delete pData;
 200
 201         // the process still started up successfully...
 202         return vResultCodes.codeTerminate;
 203     }
 204     if (!(flags & wxEXEC_SYNC))
 205     {
 206         // return the pid
 207         // warning: don't exit your app unless you actively
 208         // kill and cleanup you child processes
 209         // Maybe detach the process here???
 210         // If cmd.exe need to pass DETACH to detach the process here
 211         return vResultCodes.codeTerminate;
 212     }
 213
 214     // waiting until command executed
 215     ::DosWaitThread(&vTID, DCWW_WAIT);
 216
 217     ULONG ulExitCode = pData->vResultCodes.codeResult;
 218     delete pData;
 219
 220     // return the exit code
 221     return (long)ulExitCode;
 222 }
 223
 224 long wxExecute(
 225   char**                            ppArgv
 226 , int                               flags
 227 , wxProcess*                        pHandler
 228 )
 229 {
 230     wxString                        sCommand;
 231
 232     while (*ppArgv != NULL)
 233     {
 234         sCommand << *ppArgv++ << ' ';
 235     }
 236     sCommand.RemoveLast();
 237     return wxExecute( sCommand
 238                      ,flags
 239                      ,pHandler
 240                     );
 241 }
 242
 243 bool wxGetFullHostName(
 244   wxChar*                           zBuf
 245 , int                               nMaxSize
 246 )
 247 {
 248 #if wxUSE_NET_API
 249     char                            zServer[256];
 250     char                            zComputer[256];
 251     unsigned long                   ulLevel = 0;
 252     unsigned char*                  zBuffer = NULL;
 253     unsigned long                   ulBuffer = 256;
 254     unsigned long*                  pulTotalAvail = NULL;
 255
 256     NetBios32GetInfo( (const unsigned char*)zServer
 257                      ,(const unsigned char*)zComputer
 258                      ,ulLevel
 259                      ,zBuffer
 260                      ,ulBuffer
 261                      ,pulTotalAvail
 262                     );
 263     strncpy(zBuf, zComputer, nMaxSize);
 264     zBuf[nMaxSize] = _T('\0');
 265 #else
 266     strcpy(zBuf, "noname");
 267 #endif
 268     return *zBuf ? TRUE : FALSE;
 269     return TRUE;
 270 }
 271