# Copyright (C) 2012 Red Hat
# see file 'COPYING' for use and warranty information
#
# setrans is a tool for analyzing process transitions 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
def get_types(src, tclass, perm, check_bools=False):
allows = sepolicy.search([sepolicy.ALLOW], {sepolicy.SOURCE: src, sepolicy.CLASS: tclass, sepolicy.PERMS: perm})
nlist = []
if allows:
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)):
if i not in nlist:
nlist.append(i)
return nlist
def get_network_connect(src, protocol, perm, check_bools=False):
portrecs, portrecsbynum = sepolicy.gen_port_dict()
d = {}
tlist = get_types(src, "%s_socket" % protocol, [perm], check_bools)
if len(tlist) > 0:
d[(src, protocol, perm)] = []
for i in tlist:
if i == "ephemeral_port_type":
if "unreserved_port_type" in tlist:
continue
i = "ephemeral_port_t"
if i == "unreserved_port_t":
if "unreserved_port_type" in tlist:
continue
if "port_t" in tlist:
continue
if i == "port_t":
d[(src, protocol, perm)].append((i, ["all ports without defined types"]))
if i == "port_type":
d[(src, protocol, perm)].append((i, ["all ports"]))
elif i == "unreserved_port_type":
d[(src, protocol, perm)].append((i, ["all ports >= 1024"]))
elif i == "reserved_port_type":
d[(src, protocol, perm)].append((i, ["all ports < 1024"]))
elif i == "rpc_port_type":
d[(src, protocol, perm)].append((i, ["all ports >= 512 and < 1024"]))
else:
try:
d[(src, protocol, perm)].append((i, portrecs[(i, protocol)]))
except KeyError:
pass
return d
