81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*****************************************************************************
|
|
*
|
|
* $Id: sub.c,v 1.2 2003/08/15 20:05:36 mbroek Exp $
|
|
* Purpose ...............: MBSE BBS Shadow Password Suite
|
|
* Original Source .......: Shadow Password Suite
|
|
* Original Copyright ....: Julianne Frances Haugh and others.
|
|
*
|
|
*****************************************************************************
|
|
* Copyright (C) 1997-2001
|
|
*
|
|
* Michiel Broek FIDO: 2:280/2802
|
|
* Beekmansbos 10
|
|
* 1971 BV IJmuiden
|
|
* the Netherlands
|
|
*
|
|
* This file is part of MBSE BBS.
|
|
*
|
|
* This BBS 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 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* MBSE BBS 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 MBSE BBS; see the file COPYING. If not, write to the Free
|
|
* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*****************************************************************************/
|
|
|
|
#include "../config.h"
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <syslog.h>
|
|
#include "mblogin.h"
|
|
#include <pwd.h>
|
|
#include "sub.h"
|
|
|
|
|
|
#define BAD_SUBROOT2 "invalid root `%s' for user `%s'\n"
|
|
#define NO_SUBROOT2 "no subsystem root `%s' for user `%s'\n"
|
|
|
|
/*
|
|
* subsystem - change to subsystem root
|
|
*
|
|
* A subsystem login is indicated by the presense of a "*" as
|
|
* the first character of the login shell. The given home
|
|
* directory will be used as the root of a new filesystem which
|
|
* the user is actually logged into.
|
|
*/
|
|
|
|
void subsystem(const struct passwd *pw)
|
|
{
|
|
/*
|
|
* The new root directory must begin with a "/" character.
|
|
*/
|
|
|
|
if (pw->pw_dir[0] != '/') {
|
|
printf("Invalid root directory \"%s\"\n", pw->pw_dir);
|
|
syslog(LOG_WARNING, BAD_SUBROOT2, pw->pw_dir, pw->pw_name);
|
|
closelog();
|
|
exit (1);
|
|
}
|
|
|
|
/*
|
|
* The directory must be accessible and the current process
|
|
* must be able to change into it.
|
|
*/
|
|
|
|
if (chdir (pw->pw_dir) || chroot (pw->pw_dir)) {
|
|
printf("Can't change root directory to \"%s\"\n", pw->pw_dir);
|
|
syslog(LOG_WARNING, NO_SUBROOT2, pw->pw_dir, pw->pw_name);
|
|
closelog();
|
|
exit (1);
|
|
}
|
|
}
|
|
|
|
|