def __gen_man_page(self):
self.anon_list = []
self.attributes = {}
self.ptypes = []
self._get_ptypes()
for domain_type in self.ptypes:
try:
if typealias_types[domain_type]:
fd = self.fd
man_page_path = self.man_page_path
for t in typealias_types[domain_type]:
self._typealias_gen_man(t)
self.fd = fd
self.man_page_path = man_page_path
except KeyError:
continue
self.attributes[domain_type] = next(sepolicy.info(sepolicy.TYPE, ("%s") % domain_type))["attributes"]
self._header()
self._entrypoints()
self._process_types()
self._mcs_types()
self._booleans()
self._nsswitch_domain()
self._port_types()
self._writes()
self._file_context()
self._public_content()
self._footer()
def __gen_user_man_page(self):
self.role = self.domainname + "_r"
if not self.modules_dict:
self.modules_dict = gen_modules_dict(self.xmlpath)
try:
self.desc = self.modules_dict[self.domainname]
except:
self.desc = "%s user role" % self.domainname
if self.domainname in self.all_users:
self.attributes = next(sepolicy.info(sepolicy.TYPE, (self.type)))["attributes"]
self._user_header()
self._user_attribute()
self._can_sudo()
self._xwindows_login()
# until a new policy build with login_userdomain attribute
#self.terminal_login()
self._network()
self._booleans()
self._home_exec()
self._transitions()
else:
self._role_header()
self._booleans()
self._port_types()
self._mcs_types()
self._writes()
self._footer()
def __gen_user_man_page(self):
self.role = self.domainname + "_r"
if not self.modules_dict:
self.modules_dict = gen_modules_dict(self.xmlpath)
try:
self.desc = self.modules_dict[self.domainname]
except:
self.desc = "%s user role" % self.domainname
if self.domainname in self.all_users:
self.attributes = next(sepolicy.info(sepolicy.TYPE,
(self.type)))["attributes"]
self._user_header()
self._user_attribute()
self._can_sudo()
self._xwindows_login()
# until a new policy build with login_userdomain attribute
#self.terminal_login()
self._network()
self._booleans()
self._home_exec()
self._transitions()
else:
self._role_header()
self._booleans()
self._port_types()
self._mcs_types()
self._writes()
self._footer()
def __gen_man_page(self):
self.anon_list = []
self.attributes = {}
self.ptypes = []
self._get_ptypes()
for domain_type in self.ptypes:
try:
if typealias_types[domain_type]:
fd = self.fd
man_page_path = self.man_page_path
for t in typealias_types[domain_type]:
self._typealias_gen_man(t)
self.fd = fd
self.man_page_path = man_page_path
except KeyError:
continue
self.attributes[domain_type] = next(
sepolicy.info(sepolicy.TYPE,
("%s") % domain_type))["attributes"]
self._header()
self._entrypoints()
self._process_types()
self._mcs_types()
self._booleans()
self._nsswitch_domain()
self._port_types()
self._writes()
self._file_context()
self._public_content()
self._footer()
def __call__(self, parser, namespace, values, option_string=None):
global all_classes
if not all_classes:
all_classes = [x['name'] for x in sepolicy.info(sepolicy.TCLASS)]
if values not in all_classes:
raise ValueError("%s must be an SELinux class:\nValid classes: %s" % (values, ", ".join(all_classes)))
setattr(namespace, self.dest, values)
def __call__(self, parser, namespace, values, option_string=None):
global all_classes
if not all_classes:
all_classes = map(lambda x: x['name'], sepolicy.info(sepolicy.TCLASS))
if values not in all_classes:
raise ValueError("%s must be an SELinux class:\nValid classes: %s" % (values, ", ".join(all_classes)))
setattr(namespace, self.dest, values)
def _gen_mcs_constrained_types():
global mcs_constrained_types
if mcs_constrained_types is None:
try:
mcs_constrained_types = next(
sepolicy.info(sepolicy.ATTRIBUTE, "mcs_constrained_type"))
except StopIteration:
mcs_constrained_types = []
return mcs_constrained_types
def _mcs_types(self):
attributes = sepolicy.info(sepolicy.TYPE, (self.type))[0]["attributes"]
if "mcs_constrained_type" not in attributes:
return
self.fd.write ("""
.SH "MCS Constrained"
The SELinux process type %(type)s_t is an MCS (Multi Category Security) constrained type. Sometimes this separation is referred to as sVirt. These types are usually used for securing multi-tenant environments, such as virtualization, containers or separation of users. The tools used to launch MCS types, pick out a different MCS label for each process group.
For example one process might be launched with %(type)s_t:s0:c1,c2, and another process launched with %(type)s_t:s0:c3,c4. The SELinux kernel only allows these processes can only write to content with a matching MCS label, or a MCS Label of s0. A process running with the MCS level of s0:c1,c2 is not allowed to write to content with the MCS label of s0:c3,c4
""" % {'type': self.domainname})
def _mcs_types(self):
attributes = sepolicy.info(sepolicy.TYPE, (self.type))[0]["attributes"]
if "mcs_constrained_type" not in attributes:
return
self.fd.write("""
.SH "MCS Constrained"
The SELinux process type %(type)s_t is an MCS (Multi Category Security) constrained type. Sometimes this separation is referred to as sVirt. These types are usually used for securing multi-tenant environments, such as virtualization, containers or separation of users. The tools used to launch MCS types, pick out a different MCS label for each process group.
For example one process might be launched with %(type)s_t:s0:c1,c2, and another process launched with %(type)s_t:s0:c3,c4. The SELinux kernel only allows these processes can only write to content with a matching MCS label, or a MCS Label of s0. A process running with the MCS level of s0:c1,c2 is not allowed to write to content with the MCS label of s0:c3,c4
""" % {'type': self.domainname})
def _gen_types():
global types
if types:
return types
all_types = sepolicy.info(sepolicy.TYPE)
types = {}
for rec in all_types:
try:
types[rec["name"]] = rec["attributes"]
except:
types[rec["name"]] = []
return types
def _gen_types():
global types
if types:
return types
all_types = sepolicy.info(sepolicy.TYPE)
types = {}
for rec in all_types:
try:
types[rec["name"]] = rec["attributes"]
except:
types[rec["name"]] = []
return types
def __gen_man_page(self):
self.anon_list = []
self.attributes = {}
self.ptypes = []
self._get_ptypes()
for domain_type in self.ptypes:
self.attributes[domain_type] = sepolicy.info(sepolicy.TYPE, ("%s") % domain_type)[0]["attributes"]
self._header()
self._entrypoints()
self._process_types()
self._booleans()
self._nsswitch_domain()
self._port_types()
self._writes()
self._file_context()
self._public_content()
self._footer()
def get_all_users_info():
global users
global users_range
if users and users_range:
return users, users_range
users = []
users_range = {}
allusers = []
allusers_info = sepolicy.info(sepolicy.USER)
for d in allusers_info:
allusers.append(d['name'])
users_range[d['name'].split("_")[0]] = d['range']
for u in allusers:
if u not in ["system_u", "root", "unconfined_u"]:
users.append(u.replace("_u", ""))
users.sort()
return users, users_range
def get_all_users_info():
global users
global users_range
if users and users_range:
return users, users_range
users = []
users_range = {}
allusers = []
allusers_info = sepolicy.info(sepolicy.USER)
for d in allusers_info:
allusers.append(d['name'])
if 'range' in d:
users_range[d['name'].split("_")[0]] = d['range']
for u in allusers:
if u not in ["system_u", "root", "unconfined_u"]:
users.append(u.replace("_u", ""))
users.sort()
return users, users_range
def __gen_man_page(self):
self.anon_list = []
self.attributes = {}
self.ptypes = []
self._get_ptypes()
for domain_type in self.ptypes:
self.attributes[domain_type] = sepolicy.info(
sepolicy.TYPE, ("%s") % domain_type)[0]["attributes"]
self._header()
self._entrypoints()
self._process_types()
self._booleans()
self._nsswitch_domain()
self._port_types()
self._writes()
self._file_context()
self._public_content()
self._footer()
def get_entrypoints():
global all_entrypoints
if not all_entrypoints:
all_entrypoints = next(sepolicy.info(sepolicy.ATTRIBUTE,
"entry_type"))["types"]
return all_entrypoints
for i in info(sepolicy.PORT):
if i['low'] == i['high']:
port = str(i['low'])
else:
port = "%s-%s" % (str(i['low']), str(i['high']))
if (i['type'], i['protocol']) in portrecs:
portrecs [(i['type'], i['protocol'])].append(port)
else:
portrecs [(i['type'], i['protocol'])] = [port]
portrecsbynum[(i['low'], i['high'],i['protocol'])] = (i['type'], i['range'])
return ( portrecs, portrecsbynum )
portrecs, portrecsbynum = _gen_port_dict()
port_types = sepolicy.info(sepolicy.ATTRIBUTE,"port_type")[0]["types"]
domains = sepolicy.info(sepolicy.ATTRIBUTE,"domain")[0]["types"]
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]) and x['enabled'], allows)):
if i not in nlist:
nlist.append(i)
return nlist
def get_network_connect(src, protocol, perm):
d={}
tlist = get_types(src, "%s_socket" % protocol, [perm])
def selinux_label_port(port, remove_label=False):
"""
Either set or remove an SELinux label(ldap_port_t) for a TCP port
:param port: The TCP port to be labelled
:type port: str
:param remove_label: Set True if the port label should be removed
:type remove_label: boolean
:raises: ValueError: Error message
"""
try:
import selinux
except ImportError:
log.debug('selinux python module not found, skipping port labeling.')
return
try:
import sepolicy
except ImportError:
log.debug('sepolicy python module not found, skipping port labeling.')
return
if not selinux.is_selinux_enabled():
log.debug('selinux is disabled, skipping port relabel')
return
# We only label ports that ARE NOT in the default policy that comes with
# a RH based system.
selinux_default_ports = [389, 636, 3268, 3269, 7389]
if port in selinux_default_ports:
log.debug('port %s already in %s, skipping port relabel' %
(port, selinux_default_ports))
return
label_set = False
label_ex = None
policies = [
p for p in sepolicy.info(sepolicy.PORT) if p['protocol'] == 'tcp'
if port in range(p['low'], p['high'] + 1) if p['type'] not in
['unreserved_port_t', 'reserved_port_t', 'ephemeral_port_t']
]
for policy in policies:
if "ldap_port_t" == policy['type']:
label_set = True # Port already has our label
if policy['low'] != policy['high']:
# We have a range
if port in range(policy['low'], policy['high'] + 1):
# The port is within the range, just return
return
break
elif not remove_label:
# Port belongs to someone else (bad)
# This is only an issue during setting a label, not removing a label
raise ValueError(
"Port {} was already labelled with: ({}) Please choose a different port number"
.format(port, policy['type']))
if (remove_label and label_set) or (not remove_label and not label_set):
for i in range(5):
try:
subprocess.check_call([
"semanage", "port", "-d" if remove_label else "-a", "-t",
"ldap_port_t", "-p", "tcp",
str(port)
])
return
except (OSError, subprocess.CalledProcessError) as e:
label_ex = e
time.sleep(3)
raise ValueError("Failed to mangle port label: " + str(label_ex))
def get_entrypoints():
global all_entrypoints
if not all_entrypoints:
all_entrypoints = next(sepolicy.info(sepolicy.ATTRIBUTE, "entry_type"))["types"]
return all_entrypoints
def expand_attribute(attribute):
try:
return sepolicy.info(sepolicy.ATTRIBUTE, attribute)[0]["types"]
except RuntimeError:
return [attribute]
def sepolicy_port_json_generator():
ports = sepolicy.info(sepolicy.PORT)
for port in ports:
yield port
def _gen_entry_types():
global entry_types
if entry_types is None:
entry_types = next(sepolicy.info(sepolicy.ATTRIBUTE, "entry_type"))["types"]
return entry_types
def expand_attribute(attribute):
try:
return sepolicy.info(sepolicy.ATTRIBUTE, attribute)[0]["types"]
except RuntimeError:
return [attribute]
def expand_attribute(attribute):
try:
return list(next(sepolicy.info(sepolicy.ATTRIBUTE, attribute))["types"])
except StopIteration:
return [attribute]
def _gen_entry_types():
global entry_types
if entry_types is None:
entry_types = next(sepolicy.info(sepolicy.ATTRIBUTE, "entry_type"))["types"]
return entry_types
def _gen_mcs_constrained_types():
global mcs_constrained_types
if mcs_constrained_types is None:
mcs_constrained_types = next(sepolicy.info(sepolicy.ATTRIBUTE, "mcs_constrained_type"))
return mcs_constrained_types
def expand_attribute(attribute):
try:
return list(
next(sepolicy.info(sepolicy.ATTRIBUTE, attribute))["types"])
except StopIteration:
return [attribute]
def _gen_mcs_constrained_types():
global mcs_constrained_types
if mcs_constrained_types is None:
mcs_constrained_types = next(sepolicy.info(sepolicy.ATTRIBUTE, "mcs_constrained_type"))
return mcs_constrained_types