#
# Copyright (C) 2006 Red Hat, Inc.
#
# This program 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 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

import gettext
_ = gettext.translation('setroubleshoot-plugins', '/usr/share/locale', fallback=True).lgettext

from setroubleshoot.util import *
from setroubleshoot.Plugin import Plugin

class plugin(Plugin):
    summary =_('''
    SELinux is preventing xen ($SOURCE) "$ACCESS" to $TARGET_PATH ($TARGET_TYPE).
    ''')

    problem_description = _('''
    SELinux denied xen access to $TARGET_PATH.
    If this is a XEN image, it has to have a file context label of
    xen_image_t. The system is setup to label image files in directory./var/lib/xen/images
    correctly.  We recommend that you copy your image file to /var/lib/xen/images.
    If you really want to have your xen image files in the current directory, you can relabel $TARGET_PATH to be xen_image_t using chcon.  You also need to execute semanage fcontext -a -t xen_image_t '$TARGET_PATH' to add this
    new path to the system defaults. If you did not intend to use $TARGET_PATH as a xen
    image it could indicate either a bug or an intrusion attempt.
    ''')

    fix_description = _('''
    You can alter the file context by executing chcon -t xen_image_t '$TARGET_PATH'
    You must also change the default file context files on the system in order to preserve them even on a full relabel.  "semanage fcontext -a -t xen_image_t '$TARGET_PATH'"
    ''')

    fix_cmd = "chcon -t xen_image_t '$TARGET_PATH'"
    
    def __init__(self):
        Plugin.__init__(self, __name__)

    def analyze(self, avc):
        if avc.matches_source_types(['xend_t', 'xm_t'])                 and \
           avc.all_accesses_are_in(avc.r_file_perms + avc.r_dir_perms)  and \
           avc.has_tclass_in(['file', 'dir'])                           and \
           avc.path_is_not_standard_directory():
            # MATCH
            return self.report(avc, _("File Label"),
                               self.summary, self.problem_description,
                               self.fix_description, self.fix_cmd)
        else:
            return None