# Copyright (C) 2012 Red Hat # see file 'COPYING' for use and warranty information # # policygentool is a tool for the initial generation of 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 re import sys import sepolicy ADMIN_TRANSITION_INTERFACE = "_admin$" USER_TRANSITION_INTERFACE = "_role$" __all__ = ['get_all_interfaces', 'get_interfaces_from_xml', 'get_admin', 'get_user', 'get_interface_dict', 'get_interface_format_text', 'get_interface_compile_format_text', 'get_xml_file', 'interface_compile_test'] ## ## I18N ## PROGNAME = "selinux-python" try: import gettext kwargs = {} if sys.version_info < (3,): kwargs['unicode'] = True t = gettext.translation(PROGNAME, localedir="/usr/share/locale", **kwargs, fallback=True) _ = t.gettext except: try: import builtins builtins.__dict__['_'] = str except ImportError: import __builtin__ __builtin__.__dict__['_'] = unicode def get_interfaces_from_xml(path): """ Get all interfaces from given xml file""" interfaces_list = [] idict = get_interface_dict(path) for k in idict.keys(): interfaces_list.append(k) return interfaces_list def get_all_interfaces(path=""): from sepolicy import get_methods all_interfaces = [] if not path: all_interfaces = get_methods() else: xml_path = get_xml_file(path) all_interfaces = get_interfaces_from_xml(xml_path) return all_interfaces def get_admin(path=""): """ Get all domains with an admin interface from installed policy.""" """ If xml_path is specified, func returns an admin interface from specified xml file""" admin_list = [] if path: try: xml_path = get_xml_file(path) idict = get_interface_dict(xml_path) for k in idict.keys(): if k.endswith("_admin"): admin_list.append(k) except IOError as e: sys.stderr.write("%s: %s\n" % (e.__class__.__name__, str(e))) sys.exit(1) else: for i in sepolicy.get_methods(): if i.endswith("_admin"): admin_list.append(i.split("_admin")[0]) return admin_list def get_user(path=""): """ Get all domains with SELinux user role interface""" """ If xml_path is specified, func returns an user role interface from specified xml file""" trans_list = [] if path: try: xml_path = get_xml_file(path) idict = get_interface_dict(xml_path) for k in idict.keys(): if k.endswith("_role"): if (("%s_exec_t" % k[:-5]) in sepolicy.get_all_types()): trans_list.append(k) except IOError as e: sys.stderr.write("%s: %s\n" % (e.__class__.__name__, str(e))) sys.exit(1) else: for i in sepolicy.get_methods(): m = re.findall("(.*)%s" % USER_TRANSITION_INTERFACE, i) if len(m) > 0: if "%s_exec_t" % m[0] in sepolicy.get_all_types(): trans_list.append(m[0]) return trans_list interface_dict = None def get_interface_dict(path="/usr/share/selinux/devel/policy.xml"): global interface_dict import os import xml.etree.ElementTree if interface_dict: return interface_dict interface_dict = {} param_list = [] xml_path = """<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?> <policy> <layer name="admin"> """ xml_path += path xml_path += """ </layer> </policy> """ try: if os.path.isfile(path): tree = xml.etree.ElementTree.parse(path) else: tree = xml.etree.ElementTree.fromstring(xml_path) for l in tree.findall("layer"): for m in l.findall("module"): for i in m.iter('interface'): for e in i.findall("param"): param_list.append(e.get('name')) interface_dict[(i.get("name"))] = [param_list, (i.find('summary').text), "interface"] param_list = [] for i in m.iter('template'): for e in i.findall("param"): param_list.append(e.get('name')) interface_dict[(i.get("name"))] = [param_list, (i.find('summary').text), "template"] param_list = [] except IOError: pass return interface_dict def get_interface_format_text(interface, path="/usr/share/selinux/devel/policy.xml"): idict = get_interface_dict(path) interface_text = "%s(%s) %s" % (interface, ", ".join(idict[interface][0]), " ".join(idict[interface][1].split("\n"))) return interface_text def get_interface_compile_format_text(interfaces_dict, interface): from .templates import test_module param_tmp = [] for i in interfaces_dict[interface][0]: param_tmp.append(test_module.dict_values[i]) interface_text = "%s(%s)\n" % (interface, ", ".join(param_tmp)) return interface_text def generate_compile_te(interface, idict, name="compiletest"): from .templates import test_module te = "" te += re.sub("TEMPLATETYPE", name, test_module.te_test_module) te += get_interface_compile_format_text(idict, interface) return te def get_xml_file(if_file): """ Returns xml format of interfaces for given .if policy file""" import os try: from commands import getstatusoutput except ImportError: from subprocess import getstatusoutput basedir = os.path.dirname(if_file) + "/" filename = os.path.basename(if_file).split(".")[0] rc, output = getstatusoutput("/usr/bin/python3 /usr/share/selinux/devel/include/support/segenxml.py -w -m %s" % (basedir + filename)) if rc != 0: sys.stderr.write("\n Could not process selected interface file.\n") sys.stderr.write("\n%s" % output) sys.exit(1) else: return output def interface_compile_test(interface, path="/usr/share/selinux/devel/policy.xml"): exclude_interfaces = ["userdom", "kernel", "corenet", "files", "dev"] exclude_interface_type = ["template"] try: from commands import getstatusoutput except ImportError: from subprocess import getstatusoutput import os policy_files = {'pp': "compiletest.pp", 'te': "compiletest.te", 'fc': "compiletest.fc", 'if': "compiletest.if"} idict = get_interface_dict(path) if not (interface.split("_")[0] in exclude_interfaces or idict[interface][2] in exclude_interface_type): print(_("Compiling %s interface") % interface) try: fd = open(policy_files['te'], "w") fd.write(generate_compile_te(interface, idict)) fd.close() rc, output = getstatusoutput("make -f /usr/share/selinux/devel/Makefile %s" % policy_files['pp']) if rc != 0: sys.stderr.write(output) sys.stderr.write(_("\nCompile test for %s failed.\n") % interface) except EnvironmentError as e: sys.stderr.write(_("\nCompile test for %s has not run. %s\n") % (interface, e)) for v in policy_files.values(): if os.path.exists(v): os.remove(v) else: sys.stderr.write(_("\nCompiling of %s interface is not supported.") % interface)