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 25 26 def get_types(src, tclass, perm, check_bools=False): 27 allows = sepolicy.search([sepolicy.ALLOW], {sepolicy.SOURCE: src, sepolicy.CLASS: tclass, sepolicy.PERMS: perm}) 28 nlist = [] 29 if allows: 30 for i in map(lambda y: y[sepolicy.TARGET], filter(lambda x: set(perm).issubset(x[sepolicy.PERMS]) and (not check_bools or x["enabled"]), allows)): 31 if i not in nlist: 32 nlist.append(i) 33 return nlist 34 35 36 def get_network_connect(src, protocol, perm, check_bools=False): 37 portrecs, portrecsbynum = sepolicy.gen_port_dict() 38 d = {} 39 tlist = get_types(src, "%s_socket" % protocol, [perm], check_bools) 40 if len(tlist) > 0: 41 d[(src, protocol, perm)] = [] 42 for i in tlist: 43 if i == "ephemeral_port_type": 44 if "unreserved_port_type" in tlist: 45 continue 46 i = "ephemeral_port_t" 47 if i == "unreserved_port_t": 48 if "unreserved_port_type" in tlist: 49 continue 50 if "port_t" in tlist: 51 continue 52 if i == "port_t": 53 d[(src, protocol, perm)].append((i, ["all ports with out defined types"])) 54 if i == "port_type": 55 d[(src, protocol, perm)].append((i, ["all ports"])) 56 elif i == "unreserved_port_type": 57 d[(src, protocol, perm)].append((i, ["all ports > 1024"])) 58 elif i == "reserved_port_type": 59 d[(src, protocol, perm)].append((i, ["all ports < 1024"])) 60 elif i == "rpc_port_type": 61 d[(src, protocol, perm)].append((i, ["all ports > 500 and < 1024"])) 62 else: 63 try: 64 d[(src, protocol, perm)].append((i, portrecs[(i, protocol)])) 65 except KeyError: 66 pass 67 return d 68
