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/* exec.c - generic call-a-program code
* Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#ifdef HAVE_DOSISH_SYSTEM
# ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
# endif
# include <windows.h>
#endif
#include <string.h>
#include "gpg.h"
#include "options.h"
#include "../common/i18n.h"
#include "exec.h"
#ifdef NO_EXEC
int set_exec_path(const char *path) { return GPG_ERR_GENERAL; }
#else
#if defined (_WIN32)
/* This is a nicer system() for windows that waits for programs to
return before returning control to the caller. I hate helpful
computers. */
int
w32_system(const char *command)
{
if (!strncmp (command, "!ShellExecute ", 14))
{
SHELLEXECUTEINFOW see;
wchar_t *wname;
int waitms;
command = command + 14;
while (spacep (command))
command++;
waitms = atoi (command);
if (waitms < 0)
waitms = 0;
else if (waitms > 60*1000)
waitms = 60000;
while (*command && !spacep (command))
command++;
while (spacep (command))
command++;
wname = utf8_to_wchar (command);
if (!wname)
return -1;
memset (&see, 0, sizeof see);
see.cbSize = sizeof see;
see.fMask = (SEE_MASK_NOCLOSEPROCESS
| SEE_MASK_NOASYNC
| SEE_MASK_FLAG_NO_UI
| SEE_MASK_NO_CONSOLE);
see.lpVerb = L"open";
see.lpFile = (LPCWSTR)wname;
see.nShow = SW_SHOW;
if (DBG_EXTPROG)
log_debug ("running ShellExecuteEx(open,'%s')\n", command);
if (!ShellExecuteExW (&see))
{
if (DBG_EXTPROG)
log_debug ("ShellExecuteEx failed: rc=%d\n", (int)GetLastError ());
xfree (wname);
return -1;
}
if (DBG_EXTPROG)
log_debug ("ShellExecuteEx succeeded (hProcess=%p,hInstApp=%d)\n",
see.hProcess, (int)see.hInstApp);
if (!see.hProcess)
{
gnupg_usleep (waitms*1000);
if (DBG_EXTPROG)
log_debug ("ShellExecuteEx ready (wait=%dms)\n", waitms);
}
else
{
WaitForSingleObject (see.hProcess, INFINITE);
if (DBG_EXTPROG)
log_debug ("ShellExecuteEx ready\n");
}
CloseHandle (see.hProcess);
xfree (wname);
}
else
{
char *string;
wchar_t *wstring;
PROCESS_INFORMATION pi;
STARTUPINFOW si;
/* We must use a copy of the command as CreateProcess modifies
* this argument. */
string = xstrdup (command);
wstring = utf8_to_wchar (string);
xfree (string);
if (!wstring)
return -1;
memset (&pi, 0, sizeof(pi));
memset (&si, 0, sizeof(si));
si.cb = sizeof (si);
if (!CreateProcessW (NULL, wstring, NULL, NULL, FALSE,
DETACHED_PROCESS,
NULL, NULL, &si, &pi))
{
xfree (wstring);
return -1;
}
/* Wait for the child to exit */
WaitForSingleObject (pi.hProcess, INFINITE);
CloseHandle (pi.hProcess);
CloseHandle (pi.hThread);
xfree (wstring);
}
return 0;
}
#endif /*_W32*/
/* Replaces current $PATH */
int
set_exec_path(const char *path)
{
char *p;
p=xmalloc(5+strlen(path)+1);
strcpy(p,"PATH=");
strcat(p,path);
if(DBG_EXTPROG)
log_debug("set_exec_path: %s\n",p);
/* Notice that path is never freed. That is intentional due to the
way putenv() works. This leaks a few bytes if we call
set_exec_path multiple times. */
if(putenv(p)!=0)
return GPG_ERR_GENERAL;
else
return 0;
}
#endif /* ! NO_EXEC */

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Tue, Jan 20, 11:15 PM (15 h, 1 m)
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