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# 

# Copyright (C) 2013 Red Hat, Inc. 

# 

# This copyrighted material is made available to anyone wishing to use, 

# modify, copy, or redistribute it subject to the terms and conditions of 

# the GNU General Public License v.2, or (at your option) any later version. 

# This program is distributed in the hope that it will be useful, but WITHOUT 

# ANY WARRANTY expressed or implied, including the implied warranties 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., 51 Franklin Street, Fifth Floor, Boston, MA 

# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the 

# source code or documentation are not subject to the GNU General Public 

# License and may only be used or replicated with the express permission of 

# Red Hat, Inc. 

# 

# Red Hat Author(s): Vratislav Podzimek <vpodzime@redhat.com> 

# 

 

""" 

Module with various classes for handling pre-installation rules. 

 

""" 

 

import optparse 

import shlex 

import logging 

from pyanaconda.pwpolicy import F22_PwPolicyData 

from org_fedora_oscap import common 

from org_fedora_oscap.common import OSCAPaddonError, RuleMessage 

 

# everything else should be private 

__all__ = ["RuleData"] 

 

 

log = logging.getLogger("anaconda") 

 

_ = common._ 

 

 

# TODO: use set instead of list for mount options? 

def parse_csv(option, opt_str, value, parser): 

for item in value.split(","): 

if item: 

parser.values.ensure_value(option.dest, []).append(item) 

 

 

class ModifiedOptionParserException(Exception): 

"""Exception to be raised by ModifiedOptionParser.""" 

pass 

 

 

class ModifiedOptionParser(optparse.OptionParser): 

"""Overrides error behavior of OptionParser.""" 

def error(self, msg): 

raise ModifiedOptionParserException(msg) 

 

def exit(self, status=0, msg=None): 

raise ModifiedOptionParserException(msg) 

 

 

PART_RULE_PARSER = ModifiedOptionParser() 

PART_RULE_PARSER.add_option("--mountoptions", dest="mount_options", 

action="callback", callback=parse_csv, nargs=1, 

type="string") 

 

PASSWD_RULE_PARSER = ModifiedOptionParser() 

PASSWD_RULE_PARSER.add_option("--minlen", dest="minlen", action="store", 

default=0, type="int") 

 

PACKAGE_RULE_PARSER = ModifiedOptionParser() 

PACKAGE_RULE_PARSER.add_option("--add", dest="add_pkgs", action="append", 

type="string") 

PACKAGE_RULE_PARSER.add_option("--remove", dest="remove_pkgs", action="append", 

type="string") 

 

BOOTLOADER_RULE_PARSER = ModifiedOptionParser() 

BOOTLOADER_RULE_PARSER.add_option("--passwd", dest="passwd", action="store_true", 

default=False) 

 

KDUMP_RULE_PARSER = ModifiedOptionParser() 

KDUMP_RULE_PARSER.add_option("--enable", action="store_true", 

dest="kdenabled", default=None) 

KDUMP_RULE_PARSER.add_option("--disable", action="store_false", 

dest="kdenabled", default=None) 

 

FIREWALL_RULE_PARSER = ModifiedOptionParser() 

FIREWALL_RULE_PARSER.add_option("--enable", action="store_true", 

dest="fwenabled", default=None) 

FIREWALL_RULE_PARSER.add_option("--disable", action="store_false", 

dest="fwenabled", default=None) 

FIREWALL_RULE_PARSER.add_option("--service", dest="add_svcs", action="append", 

type="string") 

FIREWALL_RULE_PARSER.add_option("--port", dest="add_port", action="append", 

type="string") 

FIREWALL_RULE_PARSER.add_option("--trust", dest="add_trust", action="append", 

type="string") 

FIREWALL_RULE_PARSER.add_option("--remove-service", dest="remove_svcs", 

action="append", type="string") 

 

 

class RuleHandler(object): 

"""Base class for the rule handlers.""" 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""" 

Method that should check the current state (as defined by the ksdata 

and storage parameters) against the rules the instance of RuleHandler 

holds. Depending on the value of report_only it should fix the state 

with changes that can be done automatically or not and return the list 

of warnings and errors for fixes that need to be done manually together 

with info messages about the automatic changes. One should make sure 

this method is called with report_only set to False at least once so 

that the automatic fixes are done. 

 

:param ksdata: data representing the values set by user 

:type ksdata: pykickstart.base.BaseHandler 

:param storage: object storing storage-related information 

(disks, partitioning, bootloader, etc.) 

:type storage: blivet.Blivet 

:param report_only: whether to do fixing or just report information 

:type report_only: bool 

:return: errors and warnings for fixes that need to be done manually 

and info messages about the automatic changes 

:rtype: list of common.RuleMessage objects 

 

""" 

 

return [] 

 

def revert_changes(self, ksdata, storage): 

""" 

Method that should revert all changes done by the previous calls of the 

eval_rules method with the report_only set to False. 

 

:see: eval_rules 

 

""" 

 

# inheriting classes are supposed to override this 

pass 

 

 

class UknownRuleError(OSCAPaddonError): 

"""Exception class for cases when an uknown rule is to be processed.""" 

 

pass 

 

 

class RuleData(RuleHandler): 

"""Class holding data parsed from the applied rules.""" 

 

def __init__(self): 

"""Constructor initializing attributes.""" 

 

self._part_rules = PartRules() 

self._passwd_rules = PasswdRules() 

self._package_rules = PackageRules() 

self._bootloader_rules = BootloaderRules() 

self._kdump_rules = KdumpRules() 

self._firewall_rules = FirewallRules() 

 

self._rule_handlers = (self._part_rules, self._passwd_rules, 

self._package_rules, self._bootloader_rules, 

self._kdump_rules, self._firewall_rules, 

) 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "" 

 

part_strs = str(self._part_rules) 

if part_strs: 

ret += part_strs 

 

passwd_str = str(self._passwd_rules) 

if passwd_str: 

ret += "\n" + passwd_str 

 

packages_str = str(self._package_rules) 

if packages_str: 

ret += "\n" + packages_str 

 

firewall_str = str(self._firewall_rules) 

if firewall_str: 

ret += "\n" + firewall_str 

 

return ret 

 

def new_rule(self, rule): 

""" 

Method that handles a single rule line (e.g. "part /tmp"). 

 

:param rule: a single rule line 

:type rule: str 

 

""" 

 

actions = {"part": self._new_part_rule, 

"passwd": self._new_passwd_rule, 

"package": self._new_package_rule, 

"bootloader": self._new_bootloader_rule, 

"kdump": self._new_kdump_rule, 

"firewall": self._new_firewall_rule, 

} 

 

rule = rule.strip() 

if not rule: 

return 

 

first_word = rule.split(None, 1)[0] 

try: 

actions[first_word](rule) 

except (ModifiedOptionParserException, KeyError) as e: 

log.warning("Unknown OSCAP Addon rule '{}': {}".format(rule, e)) 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

 

# evaluate all subgroups of rules 

for rule_handler in self._rule_handlers: 

messages += rule_handler.eval_rules(ksdata, storage, report_only) 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHandler.revert_changes""" 

 

# revert changes in all subgroups of rules 

for rule_handler in self._rule_handlers: 

rule_handler.revert_changes(ksdata, storage) 

 

def _new_part_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = PART_RULE_PARSER.parse_args(args) 

 

# args contain both "part" and mount point (e.g. "/tmp") 

mount_point = args[1] 

 

self._part_rules.ensure_mount_point(mount_point) 

 

if opts.mount_options: 

part_data = self._part_rules[mount_point] 

part_data.add_mount_options(opts.mount_options) 

 

def _new_passwd_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = PASSWD_RULE_PARSER.parse_args(args) 

 

self._passwd_rules.update_minlen(opts.minlen) 

 

def _new_package_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = PACKAGE_RULE_PARSER.parse_args(args) 

 

self._package_rules.add_packages(opts.add_pkgs) 

self._package_rules.remove_packages(opts.remove_pkgs) 

 

def _new_bootloader_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = BOOTLOADER_RULE_PARSER.parse_args(args) 

 

if opts.passwd: 

self._bootloader_rules.require_password() 

 

def _new_kdump_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = KDUMP_RULE_PARSER.parse_args(args) 

 

self._kdump_rules.kdump_enabled(opts.kdenabled) 

 

def _new_firewall_rule(self, rule): 

args = shlex.split(rule) 

(opts, args) = FIREWALL_RULE_PARSER.parse_args(args) 

 

self._firewall_rules.add_services(opts.add_svcs) 

self._firewall_rules.remove_services(opts.remove_svcs) 

self._firewall_rules.add_trusts(opts.add_trust) 

self._firewall_rules.add_ports(opts.add_port) 

self._firewall_rules.firewall_enabled(opts.fwenabled) 

 

@property 

def passwd_rules(self): 

# needed for fixups in GUI 

return self._passwd_rules 

 

 

class PartRules(RuleHandler): 

"""Simple class holding data from the rules affecting partitioning.""" 

 

def __init__(self): 

"""Constructor initializing attributes.""" 

 

self._rules = dict() 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

return "\n".join(str(rule) for rule in self._rules.values()) 

 

def __getitem__(self, key): 

"""Method to support dictionary-like syntax.""" 

 

return self._rules[key] 

 

def __setitem__(self, key, value): 

"""Method to support dictionary-like syntax.""" 

 

self._rules[key] = value 

 

def __delitem__(self, key): 

"""One of the methods needed to implement a container.""" 

 

self._rules.__delitem__(key) 

 

def __len__(self): 

"""One of the methods needed to implement a container.""" 

 

return self._rules.__len__() 

 

def __contains__(self, key): 

"""Method needed for the 'in' operator to work.""" 

 

return key in self._rules 

 

def ensure_mount_point(self, mount_point): 

if mount_point not in self._rules: 

self._rules[mount_point] = PartRule(mount_point) 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

for part_rule in self._rules.values(): 

messages += part_rule.eval_rules(ksdata, storage, report_only) 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHandler.revert_changes""" 

 

for part_rule in self._rules.values(): 

part_rule.revert_changes(ksdata, storage) 

 

 

class PartRule(RuleHandler): 

"""Simple class holding rule data for a single partition/mount point.""" 

 

def __init__(self, mount_point): 

""" 

Constructor initializing attributes. 

 

:param mount_point: the mount point the object holds data for 

:type mount_point: str 

 

""" 

 

self._mount_point = mount_point 

self._mount_options = [] 

self._added_mount_options = [] 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "part %s" % self._mount_point 

if self._mount_options: 

ret += " --mountoptions=%s" % ",".join(self._mount_options) 

 

return ret 

 

def add_mount_options(self, mount_options): 

""" 

Add new mount options (do not add duplicates). 

 

:param mount_options: list of mount options to be added 

:type mount_options: list of strings 

 

""" 

 

self._mount_options.extend(opt for opt in mount_options 

if opt not in self._mount_options) 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

if self._mount_point not in storage.mountpoints: 

msg = _("{0} must be on a separate partition or logical " 

"volume and has to be created in the " 

"partitioning layout before installation can occur " 

"with a security profile").format(self._mount_point) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_FATAL, msg)) 

 

# mount point doesn't exist, nothing more can be found here 

return messages 

 

# template for the message 

msg_tmpl = _("mount option '%(mount_option)s' added for " 

"the mount point %(mount_point)s") 

 

# add message for every option already added 

for opt in self._added_mount_options: 

msg = msg_tmpl % {"mount_option": opt, 

"mount_point": self._mount_point} 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# mount point to be created during installation 

target_mount_point = storage.mountpoints[self._mount_point] 

 

# generator for the new options that should be added 

new_opts = (opt for opt in self._mount_options 

if opt not in target_mount_point.format.options.split(",")) 

 

# add message for every mount option added 

for opt in new_opts: 

msg = msg_tmpl % {"mount_option": opt, 

"mount_point": self._mount_point} 

 

# add message for the mount option in any case 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# add new options to the target mount point if not reporting only 

if not report_only: 

target_mount_point.format.options += ",%s" % opt 

self._added_mount_options.append(opt) 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""" 

Removes the mount options added to the mount point by this PartRule 

instance. 

 

:see: RuleHandler.revert_changes 

 

""" 

 

if self._mount_point not in storage.mountpoints: 

# mount point doesn't exist, nothing can be reverted 

return 

 

# mount point to be created during installation 

target_mount_point = storage.mountpoints[self._mount_point] 

 

# mount options to be defined for the created mount point 

tgt_mount_options = target_mount_point.format.options 

 

# generator of the options that should remain 

result_opts = (opt for opt in tgt_mount_options.split(",") 

if opt not in self._added_mount_options) 

 

# set the new list of options 

target_mount_point.format.options = ",".join(result_opts) 

 

# reset the remembered added mount options 

self._added_mount_options = [] 

 

 

class PasswdRules(RuleHandler): 

"""Simple class holding data from the rules affecting passwords.""" 

 

def __init__(self): 

"""Constructor initializing attributes.""" 

 

self._minlen = 0 

self._created_policy = False 

self._orig_minlen = None 

self._orig_strict = None 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

if self._minlen > 0: 

return "passwd --minlen=%d" % self._minlen 

else: 

return "" 

 

def update_minlen(self, minlen): 

"""Update password minimal length requirements.""" 

 

if minlen > self._minlen: 

self._minlen = minlen 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

if self._minlen == 0: 

# no password restrictions, nothing to be done here 

return [] 

 

ret = [] 

if not ksdata.rootpw.password: 

# root password was not set 

 

msg = _("make sure to create password with minimal length of %d " 

"characters") % self._minlen 

ret = [RuleMessage(self.__class__, 

common.MESSAGE_TYPE_WARNING, msg)] 

else: 

# root password set 

if ksdata.rootpw.isCrypted: 

msg = _("cannot check root password length (password is crypted)") 

log.warning("cannot check root password length (password is crypted)") 

return [RuleMessage(self.__class__, 

common.MESSAGE_TYPE_WARNING, msg)] 

elif len(ksdata.rootpw.password) < self._minlen: 

# too short 

msg = _("root password is too short, a longer one with at " 

"least %d characters is required") % self._minlen 

ret = [RuleMessage(self.__class__, 

common.MESSAGE_TYPE_FATAL, msg)] 

else: 

ret = [] 

 

if report_only: 

return ret 

 

# set the policy in any case (so that a weaker password is not entered) 

pw_policy = ksdata.anaconda.pwpolicy.get_policy("root") 

if pw_policy is None: 

pw_policy = F22_PwPolicyData() 

log.info("OSCAP addon: setting password policy %s" % pw_policy) 

ksdata.anaconda.pwpolicy.policyList.append(pw_policy) 

log.info("OSCAP addon: password policy list: %s" % ksdata.anaconda.pwpolicy.policyList) 

self._created_policy = True 

 

self._orig_minlen = pw_policy.minlen 

self._orig_strict = pw_policy.strict 

pw_policy.minlen = self._minlen 

pw_policy.strict = True 

 

return ret 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHander.revert_changes""" 

 

pw_policy = ksdata.anaconda.pwpolicy.get_policy("root") 

if self._created_policy: 

log.info("OSCAP addon: removing password policy: %s" % pw_policy) 

ksdata.anaconda.pwpolicy.policyList.remove(pw_policy) 

log.info("OSCAP addon: password policy list: %s" % ksdata.anaconda.pwpolicy.policyList) 

self._created_policy = False 

else: 

if self._orig_minlen is not None: 

pw_policy.minlen = self._orig_minlen 

self._orig_minlen = None 

if self._orig_strict is not None: 

pw_policy.strict = self._orig_strict 

self._orig_strict = None 

 

 

class PackageRules(RuleHandler): 

"""Simple class holding data from the rules affecting installed packages. 

 

""" 

 

def __init__(self): 

"""Constructor setting the initial value of attributes.""" 

 

self._add_pkgs = set() 

self._remove_pkgs = set() 

 

self._added_pkgs = set() 

self._removed_pkgs = set() 

 

def add_packages(self, packages): 

""" 

New packages that should be added. 

 

:param packages: packages to be added 

:type packages: iterable 

 

""" 

 

if packages: 

self._add_pkgs.update(packages) 

 

def remove_packages(self, packages): 

""" 

New packages that should be removed. 

 

:param packages: packages to be removed 

:type packages: iterable 

 

""" 

 

if packages: 

self._remove_pkgs.update(packages) 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "packages" 

adds = " ".join("--add=%s" % package for package in self._add_pkgs) 

if adds: 

ret += " " + adds 

 

rems = " ".join("--remove=%s" % package 

for package in self._remove_pkgs) 

if rems: 

ret += " " + rems 

 

return ret 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

 

# add messages for the already added packages 

for pkg in self._added_pkgs: 

msg = _("package '%s' has been added to the list of to be installed " 

"packages" % pkg) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# packages, that should be added 

packages_to_add = (pkg for pkg in self._add_pkgs 

if pkg not in ksdata.packages.packageList) 

 

for pkg in packages_to_add: 

# add the package unless already added 

if not report_only: 

self._added_pkgs.add(pkg) 

ksdata.packages.packageList.append(pkg) 

 

msg = _("package '%s' has been added to the list of to be installed " 

"packages" % pkg) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# now do the same for the packages that should be excluded 

 

# add messages for the already excluded packages 

for pkg in self._removed_pkgs: 

msg = _("package '%s' has been added to the list of excluded " 

"packages" % pkg) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# packages, that should be added 

packages_to_remove = (pkg for pkg in self._remove_pkgs 

if pkg not in ksdata.packages.excludedList) 

 

for pkg in packages_to_remove: 

# exclude the package unless already excluded 

if not report_only: 

self._removed_pkgs.add(pkg) 

ksdata.packages.excludedList.append(pkg) 

 

msg = _("package '%s' has been added to the list of excluded " 

"packages" % pkg) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHander.revert_changes""" 

 

# remove all packages this handler added 

for pkg in self._added_pkgs: 

if pkg in ksdata.packages.packageList: 

ksdata.packages.packageList.remove(pkg) 

 

# remove all packages this handler excluded 

for pkg in self._removed_pkgs: 

if pkg in ksdata.packages.excludedList: 

ksdata.packages.excludedList.remove(pkg) 

 

self._added_pkgs = set() 

self._removed_pkgs = set() 

 

 

class BootloaderRules(RuleHandler): 

"""Simple class holding data from the rules affecting bootloader.""" 

 

def __init__(self): 

"""Constructor setting the initial value of attributes.""" 

 

self._require_password = False 

 

def require_password(self): 

"""Requests the bootloader password should be required.""" 

 

self._require_password = True 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "bootloader" 

 

if self._require_password: 

ret += " --passwd" 

 

return ret 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

if self._require_password and not storage.bootloader.password: 

# Anaconda doesn't provide a way to set bootloader password, so 

# users cannot do much about that --> we shouldn't stop the 

# installation, should we? 

return [RuleMessage(self.__class__, common.MESSAGE_TYPE_WARNING, 

"boot loader password not set up")] 

else: 

return [] 

 

# nothing to be reverted for now 

 

 

class KdumpRules(RuleHandler): 

"""Simple class holding data from the rules affecting the kdump addon.""" 

 

def __init__(self): 

"""Constructor setting the initial value of attributes.""" 

 

self._kdump_enabled = None 

self._kdump_default_enabled = None 

 

def kdump_enabled(self, kdenabled): 

"""Enable or Disable Kdump""" 

 

if kdenabled is not None: 

self._kdump_enabled = kdenabled 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "kdump" 

 

if self._kdump_enabled is True: 

ret += " --enable" 

 

if self._kdump_enabled is False: 

ret += " --disable" 

 

return ret 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

 

if self._kdump_enabled is None: 

return [] 

elif self._kdump_enabled is False: 

msg = _("Kdump will be disabled on startup") 

elif self._kdump_enabled is True: 

msg = _("Kdump will be enabled on startup") 

 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

if not report_only: 

try: 

if self._kdump_default_enabled is None: 

# Kdump addon default startup setting 

self._kdump_default_enabled = ksdata.addons.com_redhat_kdump.enabled 

ksdata.addons.com_redhat_kdump.enabled = self._kdump_enabled 

except AttributeError: 

log.warning("com_redhat_kdump is not installed. " 

"Skipping kdump configuration") 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHander.revert_changes""" 

 

try: 

if self._kdump_enabled is not None: 

ksdata.addons.com_redhat_kdump.enabled = self._kdump_default_enabled 

except AttributeError: 

log.warning("com_redhat_kdump is not installed. " 

"Skipping reverting kdump configuration") 

 

self._kdump_enabled = None 

self._kdump_default_enabled = None 

 

 

class FirewallRules(RuleHandler): 

"""Simple class holding data from the rules affecting firewall configurations.""" 

 

def __init__(self): 

"""Constructor setting the initial value of attributes.""" 

 

self._add_svcs = set() 

self._remove_svcs = set() 

self._add_trusts = set() 

self._add_ports = set() 

 

self._added_svcs = set() 

self._added_ports = set() 

self._added_trusts = set() 

self._removed_svcs = set() 

 

self._firewall_enabled = None 

self._firewall_default_enabled = None 

 

def add_services(self, services): 

""" 

Services that should be allowed through firewall. 

 

:param services: services to be added 

:type services: iterable 

 

""" 

 

if services: 

self._add_svcs.update(services) 

 

def add_ports(self, ports): 

""" 

Ports that should be allowed through firewall. 

 

:param ports: ports to be added 

:type ports: iterable 

 

""" 

 

if ports: 

self._add_ports.update(ports) 

 

def add_trusts(self, trusts): 

""" 

trusts that should be allowed through firewall. 

 

:param trusts: trusts to be added 

:type trusts: iterable 

 

""" 

 

if trusts: 

self._add_trusts.update(trusts) 

 

def remove_services(self, services): 

""" 

New services that should not be allowed through firewall. 

 

:param services: services to be removed 

:type services: iterable 

 

""" 

 

if services: 

self._remove_svcs.update(services) 

 

def firewall_enabled(self, fwenabled): 

"""Enable or disable firewall""" 

 

if fwenabled is not None: 

self._firewall_enabled = fwenabled 

 

def __str__(self): 

"""Standard method useful for debugging and testing.""" 

 

ret = "firewall" 

 

if self._firewall_enabled is True: 

ret += " --enable" 

 

if self._firewall_enabled is False: 

ret += " --disable" 

 

adds = " ".join("--service=%s" % service 

for service in self._add_svcs) 

if adds: 

ret += " " + adds 

 

rems = " ".join("--remove-service=%s" % service 

for service in self._remove_svcs) 

if rems: 

ret += " " + rems 

 

ports = " ".join("--port=%s" % port 

for port in self._add_ports) 

if ports: 

ret += " " + ports 

 

trusts = " ".join("--trust=%s" % trust 

for trust in self._add_trusts) 

if trusts: 

ret += " " + trusts 

 

return ret 

 

def eval_rules(self, ksdata, storage, report_only=False): 

""":see: RuleHandler.eval_rules""" 

 

messages = [] 

 

if self._firewall_default_enabled is None: 

# firewall default startup setting 

self._firewall_default_enabled = ksdata.firewall.enabled 

 

if self._firewall_enabled is False: 

msg = _("Firewall will be disabled on startup") 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

if not report_only: 

ksdata.firewall.enabled = self._firewall_enabled 

 

elif self._firewall_enabled is True: 

msg = _("Firewall will be enabled on startup") 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

if not report_only: 

ksdata.firewall.enabled = self._firewall_enabled 

 

# add messages for the already added services 

for svc in self._added_svcs: 

msg = _("service '%s' has been added to the list of services to be " 

"added to the firewall" % svc) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# add messages for the already added ports 

for port in self._added_ports: 

msg = _("port '%s' has been added to the list of ports to be " 

"added to the firewall" % port) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# add messages for the already added trusts 

for trust in self._added_trusts: 

msg = _("trust '%s' has been added to the list of trusts to be " 

"added to the firewall" % trust) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# services, that should be added 

services_to_add = (svc for svc in self._add_svcs 

if svc not in ksdata.firewall.services) 

 

# ports, that should be added 

ports_to_add = (ports for ports in self._add_ports 

if ports not in ksdata.firewall.ports) 

 

# trusts, that should be added 

trusts_to_add = (trust for trust in self._add_trusts 

if trust not in ksdata.firewall.trusts) 

 

for svc in services_to_add: 

# add the service unless already added 

if not report_only: 

self._added_svcs.add(svc) 

ksdata.firewall.services.append(svc) 

 

msg = _("service '%s' has been added to the list of services to be " 

"added to the firewall" % svc) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

for port in ports_to_add: 

# add the port unless already added 

if not report_only: 

self._added_ports.add(port) 

ksdata.firewall.ports.append(port) 

 

msg = _("port '%s' has been added to the list of ports to be " 

"added to the firewall" % port) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

for trust in trusts_to_add: 

# add the trust unless already added 

if not report_only: 

self._added_trusts.add(trust) 

ksdata.firewall.trusts.append(trust) 

 

msg = _("trust '%s' has been added to the list of trusts to be " 

"added to the firewall" % trust) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# now do the same for the services that should be excluded 

 

# add messages for the already excluded services 

for svc in self._removed_svcs: 

msg = _("service '%s' has been added to the list of services to be " 

"removed from the firewall" % svc) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

# services, that should be added 

services_to_remove = (svc for svc in self._remove_svcs 

if svc not in ksdata.firewall.remove_services) 

 

for svc in services_to_remove: 

# exclude the service unless already excluded 

if not report_only: 

self._removed_svcs.add(svc) 

ksdata.firewall.remove_services.append(svc) 

 

msg = _("service '%s' has been added to the list of services to be " 

"removed from the firewall" % svc) 

messages.append(RuleMessage(self.__class__, 

common.MESSAGE_TYPE_INFO, msg)) 

 

return messages 

 

def revert_changes(self, ksdata, storage): 

""":see: RuleHander.revert_changes""" 

 

if self._firewall_enabled is not None: 

ksdata.firewall.enabled = self._firewall_default_enabled 

 

# remove all services this handler added 

for svc in self._added_svcs: 

if svc in ksdata.firewall.services: 

ksdata.firewall.services.remove(svc) 

 

# remove all ports this handler added 

for port in self._added_ports: 

if port in ksdata.firewall.ports: 

ksdata.firewall.ports.remove(port) 

 

# remove all trusts this handler added 

for trust in self._added_trusts: 

if trust in ksdata.firewall.trusts: 

ksdata.firewall.trusts.remove(trust) 

 

# remove all services this handler excluded 

for svc in self._removed_svcs: 

if svc in ksdata.firewall.remove_services: 

ksdata.firewall.remove_services.remove(svc) 

 

self._added_svcs = set() 

self._added_ports = set() 

self._added_trusts = set() 

self._removed_svcs = set() 

self._firewall_enabled = None 

self._firewall_default_enabled = None