1 #! /usr/bin/python -Es 2 # Copyright (C) 2012 Red Hat 3 # see file 'COPYING' for use and warranty information 4 # 5 # setrans is a tool for analyzing process transistions in SELinux policy 6 # 7 # This program is free software; you can redistribute it and/or 8 # modify it under the terms of the GNU General Public License as 9 # published by the Free Software Foundation; either version 2 of 10 # the License, or (at your option) any later version. 11 # 12 # This program is distributed in the hope that it will be useful, 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 # GNU General Public License for more details. 16 # 17 # You should have received a copy of the GNU General Public License 18 # along with this program; if not, write to the Free Software 19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 20 # 02111-1307 USA 21 # 22 # 23 import sepolicy 24 import sys 25 search = sepolicy.search 26 info = sepolicy.info 27 28 29 def expand_attribute(attribute): 30 try: 31 return info(sepolicy.ATTRIBUTE, attribute)[0]["types"] 32 except RuntimeError: 33 return [attribute] 34 35 36 def get_types(src, tclass, perm): 37 allows = search([sepolicy.ALLOW], {sepolicy.SOURCE: src, sepolicy.CLASS: tclass, sepolicy.PERMS: perm}) 38 if not allows: 39 raise TypeError("The %s type is not allowed to %s any types" % (src, ",".join(perm))) 40 41 tlist = [] 42 for l in map(lambda y: y[sepolicy.TARGET], filter(lambda x: set(perm).issubset(x[sepolicy.PERMS]), allows)): 43 tlist = tlist + expand_attribute(l) 44 return tlist 45
