/usr/lib/python2.7/dist-packages/sepolicy/network.py is in python-sepolicy 2.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2012 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
def get_types(src, tclass, perm):
allows=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]), allows)):
if i not in nlist:
nlist.append(i)
return nlist
def get_network_connect(src, protocol, perm):
portrecs, portrecsbynum = sepolicy.gen_port_dict()
d={}
tlist = get_types(src, "%s_socket" % protocol, [perm])
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 with out 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 > 500 and < 1024"]))
else:
try:
d[(src,protocol,perm)].append((i, portrecs[(i, protocol)]))
except KeyError:
pass
return d
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