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//---------------------------------------------------------------------------
//
// kPPP: A pppd front end for the KDE project
//
//---------------------------------------------------------------------------
//
// (c) 1997-1998 Bernd Johannes Wuebben <wuebben@kde.org>
// (c) 1997-1999 Mario Weilguni <mweilguni@kde.org>
// (c) 1998-1999 Harri Porten <porten@kde.org>
//
// derived from Jay Painters "ezppp"
//
//---------------------------------------------------------------------------
//
// $Id$
//
//---------------------------------------------------------------------------
//
// This program is free software; you can redistribute it and-or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this program; if not, write to the Free
// Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//---------------------------------------------------------------------------
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include "utils.h"
#include "kpppconfig.h"
// in case of error, we simply return "0" and hope it's ok :-)
int pppInterfaceNumber() {
char ifname[PATH_MAX];
for(int i = 0; i < 8; i++) {
snprintf(ifname, sizeof(ifname), "%s/ppp%d.pid", PPP_PID_DIR, i);
if(access(ifname, F_OK) == -1)
return i;
}
// panic
fprintf(stderr, "pppInterfaceNumber: cannot detect ppp interface number!\n");
return 0;
}
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