forked from osmocom/wireshark
117 lines
2.5 KiB
C
117 lines
2.5 KiB
C
/* privileges.c
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* Routines for handling privileges, e.g. set-UID and set-GID on UNIX.
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 2006 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include "privileges.h"
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#ifdef _WIN32
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/*
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* Called when the program starts, to save whatever credential information
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* we'll need later.
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*/
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void
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get_credential_info(void)
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{
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}
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/*
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* For now, we say the program wasn't started with special privileges.
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* There are ways of running programs with credentials other than those
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* for the session in which it's run, but I don't know whether that'd be
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* done with Ethereal/Tethereal or not.
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*/
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gboolean
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started_with_special_privs(void)
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{
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return FALSE;
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}
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/*
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* For now, we don't do anything when asked to relinquish special privileges.
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*/
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void
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relinquish_special_privs_perm(void)
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{
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}
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#else /* _WIN32 */
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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static uid_t ruid, euid;
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static gid_t rgid, egid;
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/*
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* Called when the program starts, to save whatever credential information
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* we'll need later.
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* That'd be the real and effective UID and GID on UNIX.
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*/
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void
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get_credential_info(void)
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{
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ruid = getuid();
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euid = geteuid();
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rgid = getgid();
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egid = getegid();
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}
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/*
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* "Started with special privileges" means "started out set-UID or set-GID".
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*/
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gboolean
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started_with_special_privs(void)
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{
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#ifdef HAVE_ISSETUGID
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return issetugid();
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#else
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return (ruid != euid || rgid != egid);
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#endif
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}
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/*
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* Permanently relinquish set-UID and set-GID privileges.
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* Ignore errors for now - if we have the privileges, we should
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* be able to relinquish them.
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*/
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void
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relinquish_special_privs_perm(void)
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{
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setuid(ruid);
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setgid(rgid);
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}
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#endif /* _WIN32 */
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