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#! /usr/bin/python -Es
# Copyright (C) 2011 Red Hat
# see file 'COPYING' for use and warranty information
#
# setrans is a tool for analyzing process transistions in SELinux policy
#
# 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., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA
#
#
import sepolicy
search = sepolicy.search
info = sepolicy.info
__all__ = ['setrans', ]
def _entrypoint(src):
trans = search([sepolicy.ALLOW], {sepolicy.SOURCE: src})
return map(lambda y: y[sepolicy.TARGET], filter(lambda x: "entrypoint" in x[sepolicy.PERMS], trans))
def _get_trans(src):
return search([sepolicy.TRANSITION], {sepolicy.SOURCE: src, sepolicy.CLASS: "process"})
class setrans:
def __init__(self, source, dest=None):
self.seen = []
self.sdict = {}
self.source = source
self.dest = dest
self._process(self.source)
def _process(self, source):
if source in self.sdict:
return self.sdict[source]
self.sdict[source] = {}
trans = _get_trans(source)
if not trans:
return
self.sdict[source]["name"] = source
if not self.dest:
self.sdict[source]["map"] = trans
else:
self.sdict[source]["map"] = map(lambda y: y, filter(lambda x: x["transtype"] == self.dest, trans))
self.sdict[source]["child"] = map(lambda y: y["transtype"], filter(lambda x: x["transtype"] not in [self.dest, source], trans))
for s in self.sdict[source]["child"]:
self._process(s)
def out(self, name, header=""):
buf = ""
if name in self.seen:
return buf
self.seen.append(name)
if "map" in self.sdict[name]:
for t in self.sdict[name]["map"]:
cond = sepolicy.get_conditionals(t["source"], t["transtype"], "process", ["transition"])
if cond:
buf += "%s%s @ %s --> %s %s\n" % (header, t["source"], t["target"], t["transtype"], sepolicy.get_conditionals_format_text(cond))
else:
buf += "%s%s @ %s --> %s\n" % (header, t["source"], t["target"], t["transtype"])
if "child" in self.sdict[name]:
for x in self.sdict[name]["child"]:
buf += self.out(x, "%s%s ... " % (header, name))
return buf
def output(self):
self.seen = []
print(self.out(self.source))