src/motif/utilsexc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        utilsexec.cpp
   3 // Purpose:     Execution-related utilities
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 // #pragma implementation
  14 #endif
  15
  16 #include "wx/utils.h"
  17 #include "wx/app.h"
  18 #include "wx/process.h"
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24
  25 #ifdef VMS
  26 /*steve*/
  27 #ifdef __HIDE_FORBIDDEN_NAMES
  28 #undefine __HIDE_FORBIDDEN_NAMES
  29 #endif
  30 #include <socket.h>
  31 #ifdef VAX
  32 /*because 'noshare' is not valid in vax C++*/
  33 #define CC$VAXCSHR 1
  34 #endif
  35 #include <unixlib.h>
  36 #define unlink DELETE
  37
  38 #else
  39
  40 #if defined(__AIX__) || defined(__xlC__)
  41 #include <sys/socket.h>
  42 #include <sys/select.h>
  43 #else
  44 #ifndef __DATA_GENERAL__
  45 #include <sys/syscall.h>
  46 #endif
  47 #endif
  48
  49 #include <sys/wait.h>
  50 #include <unistd.h>
  51 #include <dirent.h>
  52 #include <pwd.h>
  53
  54 #endif
  55
  56 #ifdef __SVR4__
  57 #include <sys/systeminfo.h>
  58 #endif
  59
  60 #ifdef __SOLARIS__
  61 // somehow missing from sys/wait.h but in the system's docs
  62 extern "C"
  63 {
  64     pid_t wait4(pid_t pid, int *statusp, int options, struct rusage
  65         *rusage);
  66 }
  67 #endif
  68
  69 #include <sys/time.h>
  70 #include <errno.h>
  71
  72 #include <Xm/Xm.h>
  73
  74 struct wxLocalProcessData
  75 {
  76     int pid, end_process;
  77     wxProcess *process;
  78 };
  79
  80 #ifdef __SOLARIS__
  81 // somehow missing from sys/wait.h but in the system's docs
  82 extern "C"
  83 {
  84     pid_t wait4(pid_t pid, int *statusp, int options, struct rusage
  85         *rusage);
  86 }
  87 #endif
  88
  89 void xt_notify_end_process(XtPointer client, int *fid,
  90                            XtInputId *id)
  91 {
  92     wxLocalProcessData *process_data = (wxLocalProcessData *)client;
  93
  94     int pid;
  95
  96     pid = (process_data->pid > 0) ? process_data->pid : -(process_data->pid);
  97
  98     /* wait4 is not part of any standard, use at own risk
  99     * not sure what wait4 does, but wait3 seems to be closest, whats a digit ;-)
 100     * --- offer@sgi.com */
 101 #if !defined(__sgi) && !defined(__SGI__) && !defined(__ALPHA__) && !defined(__SUNCC__)
 102     wait4(process_data->pid, NULL, 0, NULL);
 103 #else
 104     wait3((int *) NULL, 0, (rusage *) NULL);
 105 #endif
 106
 107     XtRemoveInput(*id);
 108     if (process_data->process)
 109       process_data->process->OnTerminate(process_data->pid, 0); // What should 'status' be?
 110
 111     process_data->end_process = TRUE;
 112
 113 /* double deletion!
 114     if (process_data->pid > 0)
 115         delete process_data;
 116     else
 117 */
 118         process_data->pid = 0;
 119 }
 120
 121 long wxExecute(char **argv, bool sync, wxProcess *handler)
 122 {
 123 #ifdef VMS
 124     return(0);
 125 #else
 126     if (*argv == NULL)
 127         return 0;       // Nothing???
 128
 129     int proc_link[2];
 130     if (pipe(proc_link))
 131         return 0;
 132
 133     /* fork the process */
 134 #if defined(sun) || defined(__ultrix) || defined(__bsdi__)
 135     pid_t pid = vfork ();
 136 #else
 137     pid_t pid = fork ();
 138 #endif
 139
 140     if (pid == -1)
 141     {
 142         return 0;
 143     }
 144     else if (pid == 0)
 145     {
 146         /* GUILHEM: Close all fds when sync == 0 */
 147         if (sync == 0)
 148             for (int fd=0;fd<FD_SETSIZE;fd++) {
 149                 if (proc_link[1] != fd)
 150                     close(fd);
 151             }
 152             /* child */
 153 #ifdef _AIX
 154             execvp ((const char *)*argv, (const char **)argv);
 155 #else
 156             execvp (*argv, argv);
 157 #endif
 158             /* GUILHEM: Reopen output stream */
 159             //      open("/dev/console", O_WRONLY);
 160             /* GUILHEM: End */
 161             if (errno == ENOENT)
 162                 printf ("%s: command not found\n", *argv);
 163             else
 164                 perror (*argv);
 165             printf ("wxWindows: could not execute '%s'\n", *argv);
 166             _exit (-1);
 167     }
 168     if (!sync)
 169       return pid;
 170
 171     wxLocalProcessData *process_data = new wxLocalProcessData;
 172
 173     process_data->end_process = 0;
 174     process_data->process = handler;
 175     process_data->pid = (sync) ? pid : -pid;
 176
 177     close(proc_link[1]);
 178     XtAppAddInput((XtAppContext) wxTheApp->GetAppContext(), proc_link[0],
 179         (XtPointer *) XtInputReadMask,
 180         (XtInputCallbackProc) xt_notify_end_process,
 181         (XtPointer) process_data);
 182
 183     while (!process_data->end_process)
 184         XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
 185
 186     if (WIFEXITED(process_data->end_process) != 0)
 187     {
 188         delete process_data;
 189         return WEXITSTATUS(process_data->end_process);
 190     }
 191
 192     delete process_data;
 193
 194     return pid;
 195 #endif
 196     // end VMS
 197 }
 198
 199 long wxExecute (const wxString& command, bool sync, wxProcess* handler)
 200 {
 201 #ifdef VMS
 202     return(0);
 203 #else
 204     if (command.IsNull() || command == "")
 205         return 0; // Nothing to do
 206
 207     // Run a program the recomended way under X (XView)
 208     int argc = 0;
 209     char *argv[127];
 210     char tmp[1024];
 211     const char *IFS = " \t\n";
 212
 213     // Build argument vector
 214     strncpy (tmp, (const char*) command, sizeof (tmp) / sizeof (char) - 1);
 215     tmp[sizeof (tmp) / sizeof (char) - 1] = '\0';
 216     argv[argc++] = strtok (tmp, IFS);
 217     while ((argv[argc++] = strtok (NULL, IFS)) != NULL)
 218         /* loop */ ;
 219
 220         return wxExecute(argv, sync, handler);
 221 #endif
 222     // VMS
 223 }