81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
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/*****************************************************************************
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*
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* $Id: sub.c,v 1.2 2003/08/15 20:05:36 mbroek Exp $
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* Purpose ...............: MBSE BBS Shadow Password Suite
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* Original Source .......: Shadow Password Suite
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* Original Copyright ....: Julianne Frances Haugh and others.
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*
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*****************************************************************************
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* Copyright (C) 1997-2001
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*
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* Michiel Broek FIDO: 2:280/2802
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* Beekmansbos 10
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*****************************************************************************/
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#include "../config.h"
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#include <stdio.h>
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#include <sys/types.h>
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#include <syslog.h>
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#include "mblogin.h"
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#include <pwd.h>
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#include "sub.h"
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#define BAD_SUBROOT2 "invalid root `%s' for user `%s'\n"
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#define NO_SUBROOT2 "no subsystem root `%s' for user `%s'\n"
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/*
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* subsystem - change to subsystem root
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*
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* A subsystem login is indicated by the presense of a "*" as
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* the first character of the login shell. The given home
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* directory will be used as the root of a new filesystem which
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* the user is actually logged into.
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*/
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void subsystem(const struct passwd *pw)
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{
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/*
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* The new root directory must begin with a "/" character.
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*/
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if (pw->pw_dir[0] != '/') {
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printf("Invalid root directory \"%s\"\n", pw->pw_dir);
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syslog(LOG_WARNING, BAD_SUBROOT2, pw->pw_dir, pw->pw_name);
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closelog();
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exit (1);
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}
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/*
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* The directory must be accessible and the current process
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* must be able to change into it.
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*/
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if (chdir (pw->pw_dir) || chroot (pw->pw_dir)) {
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printf("Can't change root directory to \"%s\"\n", pw->pw_dir);
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syslog(LOG_WARNING, NO_SUBROOT2, pw->pw_dir, pw->pw_name);
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closelog();
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exit (1);
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}
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}
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