#
# 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 $SOURCE from loading $TARGET_PATH which requires text relocation.
    ''')
    
    problem_description = _('''
    The $SOURCE application attempted to load $TARGET_PATH which
    requires text relocation.  This is a potential security problem.
    Most libraries do not need this permission. Libraries are
    sometimes coded incorrectly and request this permission.  The
    <a href="http://people.redhat.com/drepper/selinux-mem.html">SELinux Memory Protection Tests</a>
    web page explains how to remove this requirement.  You can configure
    SELinux temporarily to allow $TARGET_PATH to use relocation as a
    workaround, until the library is fixed. Please file a 
    <a href="http://bugzilla.redhat.com/bugzilla/enter_bug.cgi">bug report</a>
    against this package.
    ''')
    
    fix_description = _('''
    If you trust $TARGET_PATH to run correctly, you can change the
    file context to textrel_shlib_t. "chcon -t textrel_shlib_t
    '$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 textrel_shlib_t '$TARGET_PATH'"
    
    ''')

    fix_cmd = "chcon -t textrel_shlib_t '$TARGET_PATH'"

    def __init__(self):
        Plugin.__init__(self,__name__)

    def analyze(self, avc):
        if avc.has_any_access_in(['execmod']):
            # MATCH
            return self.report(avc, _("Memory"),
                               self.summary, self.problem_description,
                               self.fix_description, self.fix_cmd)
        return None