openstack/charm-nova-compute
Code Issues Proposed changes

Add hardening support

Browse Source 
Add charmhelpers.contrib.hardening and calls to install,
config-changed, upgrade-charm and update-status hooks.
Also add new config option to allow one or more hardening
modules to be applied at runtime.

Change-Id: I525c15a14662175f2a68cdcd25a3ab2c92237850
This commit is contained in:
Edward Hope-Morley 2016-03-22 21:00:45 +00:00
parent 5805659a6f
commit b1d232f866
70 changed files with 4743 additions and 182 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
charm-helpers-hooks.yaml
View File

@ -13,3 +13,4 @@ include:
- contrib.python.packages
- payload
- contrib.charmsupport
- contrib.hardening|inc=*

6
config.yaml
View File

@ -291,3 +291,9 @@ options:
wait for you to execute the openstack-upgrade action for this charm on
each unit. If False it will revert to existing behavior of upgrading
all units on config change.
harden:
default:
type: string
description: |
Apply system hardening. Supports a space-delimited list of modules
to run. Supported modules currently include os, ssh, apache and mysql.

5
hardening.yaml Normal file
View File

@ -0,0 +1,5 @@
# Overrides file for contrib.hardening. See README.hardening in
# contrib.hardening for info on how to use this file.
ssh:
server:
use_pam: 'yes' # juju requires this

38
hooks/charmhelpers/contrib/hardening/README.hardening.md Normal file
View File

@ -0,0 +1,38 @@
# Juju charm-helpers hardening library
## Description
This library provides multiple implementations of system and application
hardening that conform to the standards of http://hardening.io/.
Current implementations include:
* OS
* SSH
* MySQL
* Apache
## Requirements
* Juju Charms
## Usage
1. Synchronise this library into your charm and add the harden() decorator
(from contrib.hardening.harden) to any functions or methods you want to use
to trigger hardening of your application/system.
2. Add a config option called 'harden' to your charm config.yaml and set it to
a space-delimited list of hardening modules you want to run e.g. "os ssh"
3. Override any config defaults (contrib.hardening.defaults) by adding a file
called hardening.yaml to your charm root containing the name(s) of the
modules whose settings you want override at root level and then any settings
with overrides e.g.
os:
general:
desktop_enable: True
4. Now just run your charm as usual and hardening will be applied each time the
hook runs.

15
hooks/charmhelpers/contrib/hardening/__init__.py Normal file
View File

@ -0,0 +1,15 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.

19
hooks/charmhelpers/contrib/hardening/apache/__init__.py Normal file
View File

@ -0,0 +1,19 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from os import path
TEMPLATES_DIR = path.join(path.dirname(__file__), 'templates')

31
hooks/charmhelpers/contrib/hardening/apache/checks/__init__.py Normal file
View File

@ -0,0 +1,31 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.core.hookenv import (
log,
DEBUG,
)
from charmhelpers.contrib.hardening.apache.checks import config
def run_apache_checks():
log("Starting Apache hardening checks.", level=DEBUG)
checks = config.get_audits()
for check in checks:
log("Running '%s' check" % (check.__class__.__name__), level=DEBUG)
check.ensure_compliance()
log("Apache hardening checks complete.", level=DEBUG)

100
hooks/charmhelpers/contrib/hardening/apache/checks/config.py Normal file
View File

@ -0,0 +1,100 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import os
import re
import subprocess
from charmhelpers.core.hookenv import (
log,
INFO,
)
from charmhelpers.contrib.hardening.audits.file import (
FilePermissionAudit,
DirectoryPermissionAudit,
NoReadWriteForOther,
TemplatedFile,
)
from charmhelpers.contrib.hardening.audits.apache import DisabledModuleAudit
from charmhelpers.contrib.hardening.apache import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get Apache hardening config audits.
:returns: dictionary of audits
"""
if subprocess.call(['which', 'apache2'], stdout=subprocess.PIPE) != 0:
log("Apache server does not appear to be installed on this node - "
"skipping apache hardening", level=INFO)
return []
context = ApacheConfContext()
settings = utils.get_settings('apache')
audits = [
FilePermissionAudit(paths='/etc/apache2/apache2.conf', user='root',
group='root', mode=0o0640),
TemplatedFile(os.path.join(settings['common']['apache_dir'],
'mods-available/alias.conf'),
context,
TEMPLATES_DIR,
mode=0o0755,
user='root',
service_actions=[{'service': 'apache2',
'actions': ['restart']}]),
TemplatedFile(os.path.join(settings['common']['apache_dir'],
'conf-enabled/hardening.conf'),
context,
TEMPLATES_DIR,
mode=0o0640,
user='root',
service_actions=[{'service': 'apache2',
'actions': ['restart']}]),
DirectoryPermissionAudit(settings['common']['apache_dir'],
user='root',
group='root',
mode=0o640),
DisabledModuleAudit(settings['hardening']['modules_to_disable']),
NoReadWriteForOther(settings['common']['apache_dir']),
]
return audits
class ApacheConfContext(object):
"""Defines the set of key/value pairs to set in a apache config file.
This context, when called, will return a dictionary containing the
key/value pairs of setting to specify in the
/etc/apache/conf-enabled/hardening.conf file.
"""
def __call__(self):
settings = utils.get_settings('apache')
ctxt = settings['hardening']
out = subprocess.check_output(['apache2', '-v'])
ctxt['apache_version'] = re.search(r'.+version: Apache/(.+?)\s.+',
out).group(1)
ctxt['apache_icondir'] = '/usr/share/apache2/icons/'
ctxt['traceenable'] = settings['hardening']['traceenable']
return ctxt

0
hooks/charmhelpers/contrib/hardening/apache/templates/__init__.py Normal file
View File

31
hooks/charmhelpers/contrib/hardening/apache/templates/alias.conf Normal file
View File

@ -0,0 +1,31 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
<IfModule alias_module>
#
# Aliases: Add here as many aliases as you need (with no limit). The format is
# Alias fakename realname
#
# Note that if you include a trailing / on fakename then the server will
# require it to be present in the URL. So "/icons" isn't aliased in this
# example, only "/icons/". If the fakename is slash-terminated, then the
# realname must also be slash terminated, and if the fakename omits the
# trailing slash, the realname must also omit it.
#
# We include the /icons/ alias for FancyIndexed directory listings. If
# you do not use FancyIndexing, you may comment this out.
#
Alias /icons/ "{{ apache_icondir }}/"
<Directory "{{ apache_icondir }}">
Options -Indexes -MultiViews -FollowSymLinks
AllowOverride None
{% if apache_version == '2.4' -%}
Require all granted
{% else -%}
Order allow,deny
Allow from all
{% endif %}
</Directory>
</IfModule>

18
hooks/charmhelpers/contrib/hardening/apache/templates/hardening.conf Normal file
View File

@ -0,0 +1,18 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
<Location / >
<LimitExcept {{ allowed_http_methods }} >
# http://httpd.apache.org/docs/2.4/upgrading.html
{% if apache_version > '2.2' -%}
Require all granted
{% else -%}
Order Allow,Deny
Deny from all
{% endif %}
</LimitExcept>
</Location>
TraceEnable {{ traceenable }}

63
hooks/charmhelpers/contrib/hardening/audits/__init__.py Normal file
View File

@ -0,0 +1,63 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
class BaseAudit(object): # NO-QA
"""Base class for hardening checks.
The lifecycle of a hardening check is to first check to see if the system
is in compliance for the specified check. If it is not in compliance, the
check method will return a value which will be supplied to the.
"""
def __init__(self, *args, **kwargs):
self.unless = kwargs.get('unless', None)
super(BaseAudit, self).__init__()
def ensure_compliance(self):
"""Checks to see if the current hardening check is in compliance or
not.
If the check that is performed is not in compliance, then an exception
should be raised.
"""
pass
def _take_action(self):
"""Determines whether to perform the action or not.
Checks whether or not an action should be taken. This is determined by
the truthy value for the unless parameter. If unless is a callback
method, it will be invoked with no parameters in order to determine
whether or not the action should be taken. Otherwise, the truthy value
of the unless attribute will determine if the action should be
performed.
"""
# Do the action if there isn't an unless override.
if self.unless is None:
return True
# Invoke the callback if there is one.
if hasattr(self.unless, '__call__'):
results = self.unless()
if results:
return False
else:
return True
if self.unless:
return False
else:
return True

100
hooks/charmhelpers/contrib/hardening/audits/apache.py Normal file
View File

@ -0,0 +1,100 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import re
import subprocess
from six import string_types
from charmhelpers.core.hookenv import (
log,
INFO,
ERROR,
)
from charmhelpers.contrib.hardening.audits import BaseAudit
class DisabledModuleAudit(BaseAudit):
"""Audits Apache2 modules.
Determines if the apache2 modules are enabled. If the modules are enabled
then they are removed in the ensure_compliance.
"""
def __init__(self, modules):
if modules is None:
self.modules = []
elif isinstance(modules, string_types):
self.modules = [modules]
else:
self.modules = modules
def ensure_compliance(self):
"""Ensures that the modules are not loaded."""
if not self.modules:
return
try:
loaded_modules = self._get_loaded_modules()
non_compliant_modules = []
for module in self.modules:
if module in loaded_modules:
log("Module '%s' is enabled but should not be." %
(module), level=INFO)
non_compliant_modules.append(module)
if len(non_compliant_modules) == 0:
return
for module in non_compliant_modules:
self._disable_module(module)
self._restart_apache()
except subprocess.CalledProcessError as e:
log('Error occurred auditing apache module compliance. '
'This may have been already reported. '
'Output is: %s' % e.output, level=ERROR)
@staticmethod
def _get_loaded_modules():
"""Returns the modules which are enabled in Apache."""
output = subprocess.check_output(['apache2ctl', '-M'])
modules = []
for line in output.strip().split():
# Each line of the enabled module output looks like:
# module_name (static|shared)
# Plus a header line at the top of the output which is stripped
# out by the regex.
matcher = re.search(r'^ (\S*)', line)
if matcher:
modules.append(matcher.group(1))
return modules
@staticmethod
def _disable_module(module):
"""Disables the specified module in Apache."""
try:
subprocess.check_call(['a2dismod', module])
except subprocess.CalledProcessError as e:
# Note: catch error here to allow the attempt of disabling
# multiple modules in one go rather than failing after the
# first module fails.
log('Error occurred disabling module %s. '
'Output is: %s' % (module, e.output), level=ERROR)
@staticmethod
def _restart_apache():
"""Restarts the apache process"""
subprocess.check_output(['service', 'apache2', 'restart'])

105
hooks/charmhelpers/contrib/hardening/audits/apt.py Normal file
View File

@ -0,0 +1,105 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from __future__ import absolute_import # required for external apt import
from apt import apt_pkg
from six import string_types
from charmhelpers.fetch import (
apt_cache,
apt_purge
)
from charmhelpers.core.hookenv import (
log,
DEBUG,
WARNING,
)
from charmhelpers.contrib.hardening.audits import BaseAudit
class AptConfig(BaseAudit):
def __init__(self, config, **kwargs):
self.config = config
def verify_config(self):
apt_pkg.init()
for cfg in self.config:
value = apt_pkg.config.get(cfg['key'], cfg.get('default', ''))
if value and value != cfg['expected']:
log("APT config '%s' has unexpected value '%s' "
"(expected='%s')" %
(cfg['key'], value, cfg['expected']), level=WARNING)
def ensure_compliance(self):
self.verify_config()
class RestrictedPackages(BaseAudit):
"""Class used to audit restricted packages on the system."""
def __init__(self, pkgs, **kwargs):
super(RestrictedPackages, self).__init__(**kwargs)
if isinstance(pkgs, string_types) or not hasattr(pkgs, '__iter__'):
self.pkgs = [pkgs]
else:
self.pkgs = pkgs
def ensure_compliance(self):
cache = apt_cache()
for p in self.pkgs:
if p not in cache:
continue
pkg = cache[p]
if not self.is_virtual_package(pkg):
if not pkg.current_ver:
log("Package '%s' is not installed." % pkg.name,
level=DEBUG)
continue
else:
log("Restricted package '%s' is installed" % pkg.name,
level=WARNING)
self.delete_package(cache, pkg)
else:
log("Checking restricted virtual package '%s' provides" %
pkg.name, level=DEBUG)
self.delete_package(cache, pkg)
def delete_package(self, cache, pkg):
"""Deletes the package from the system.
Deletes the package form the system, properly handling virtual
packages.
:param cache: the apt cache
:param pkg: the package to remove
"""
if self.is_virtual_package(pkg):
log("Package '%s' appears to be virtual - purging provides" %
pkg.name, level=DEBUG)
for _p in pkg.provides_list:
self.delete_package(cache, _p[2].parent_pkg)
elif not pkg.current_ver:
log("Package '%s' not installed" % pkg.name, level=DEBUG)
return
else:
log("Purging package '%s'" % pkg.name, level=DEBUG)
apt_purge(pkg.name)
def is_virtual_package(self, pkg):
return pkg.has_provides and not pkg.has_versions

552
hooks/charmhelpers/contrib/hardening/audits/file.py Normal file
View File

@ -0,0 +1,552 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import grp
import os
import pwd
import re
from subprocess import (
CalledProcessError,
check_output,
check_call,
)
from traceback import format_exc
from six import string_types
from stat import (
S_ISGID,
S_ISUID
)
from charmhelpers.core.hookenv import (
log,
DEBUG,
INFO,
WARNING,
ERROR,
)
from charmhelpers.core import unitdata
from charmhelpers.core.host import file_hash
from charmhelpers.contrib.hardening.audits import BaseAudit
from charmhelpers.contrib.hardening.templating import (
get_template_path,
render_and_write,
)
from charmhelpers.contrib.hardening import utils
class BaseFileAudit(BaseAudit):
"""Base class for file audits.
Provides api stubs for compliance check flow that must be used by any class
that implemented this one.
"""
def __init__(self, paths, always_comply=False, *args, **kwargs):
"""
:param paths: string path of list of paths of files we want to apply
compliance checks are criteria to.
:param always_comply: if true compliance criteria is always applied
else compliance is skipped for non-existent
paths.
"""
super(BaseFileAudit, self).__init__(*args, **kwargs)
self.always_comply = always_comply
if isinstance(paths, string_types) or not hasattr(paths, '__iter__'):
self.paths = [paths]
else:
self.paths = paths
def ensure_compliance(self):
"""Ensure that the all registered files comply to registered criteria.
"""
for p in self.paths:
if os.path.exists(p):
if self.is_compliant(p):
continue
log('File %s is not in compliance.' % p, level=INFO)
else:
if not self.always_comply:
log("Non-existent path '%s' - skipping compliance check"
% (p), level=INFO)
continue
if self._take_action():
log("Applying compliance criteria to '%s'" % (p), level=INFO)
self.comply(p)
def is_compliant(self, path):
"""Audits the path to see if it is compliance.
:param path: the path to the file that should be checked.
"""
raise NotImplementedError
def comply(self, path):
"""Enforces the compliance of a path.
:param path: the path to the file that should be enforced.
"""
raise NotImplementedError
@classmethod
def _get_stat(cls, path):
"""Returns the Posix st_stat information for the specified file path.
:param path: the path to get the st_stat information for.
:returns: an st_stat object for the path or None if the path doesn't
exist.
"""
return os.stat(path)
class FilePermissionAudit(BaseFileAudit):
"""Implements an audit for file permissions and ownership for a user.
This class implements functionality that ensures that a specific user/group
will own the file(s) specified and that the permissions specified are
applied properly to the file.
"""
def __init__(self, paths, user, group=None, mode=0o600, **kwargs):
self.user = user
self.group = group
self.mode = mode
super(FilePermissionAudit, self).__init__(paths, user, group, mode,
**kwargs)
@property
def user(self):
return self._user
@user.setter
def user(self, name):
try:
user = pwd.getpwnam(name)
except KeyError:
log('Unknown user %s' % name, level=ERROR)
user = None
self._user = user
@property
def group(self):
return self._group
@group.setter
def group(self, name):
try:
group = None
if name:
group = grp.getgrnam(name)
else:
group = grp.getgrgid(self.user.pw_gid)
except KeyError:
log('Unknown group %s' % name, level=ERROR)
self._group = group
def is_compliant(self, path):
"""Checks if the path is in compliance.
Used to determine if the path specified meets the necessary
requirements to be in compliance with the check itself.
:param path: the file path to check
:returns: True if the path is compliant, False otherwise.
"""
stat = self._get_stat(path)
user = self.user
group = self.group
compliant = True
if stat.st_uid != user.pw_uid or stat.st_gid != group.gr_gid:
log('File %s is not owned by %s:%s.' % (path, user.pw_name,
group.gr_name),
level=INFO)
compliant = False
# POSIX refers to the st_mode bits as corresponding to both the
# file type and file permission bits, where the least significant 12
# bits (o7777) are the suid (11), sgid (10), sticky bits (9), and the
# file permission bits (8-0)
perms = stat.st_mode & 0o7777
if perms != self.mode:
log('File %s has incorrect permissions, currently set to %s' %
(path, oct(stat.st_mode & 0o7777)), level=INFO)
compliant = False
return compliant
def comply(self, path):
"""Issues a chown and chmod to the file paths specified."""
utils.ensure_permissions(path, self.user.pw_name, self.group.gr_name,
self.mode)
class DirectoryPermissionAudit(FilePermissionAudit):
"""Performs a permission check for the specified directory path."""
def __init__(self, paths, user, group=None, mode=0o600,
recursive=True, **kwargs):
super(DirectoryPermissionAudit, self).__init__(paths, user, group,
mode, **kwargs)
self.recursive = recursive
def is_compliant(self, path):
"""Checks if the directory is compliant.
Used to determine if the path specified and all of its children
directories are in compliance with the check itself.
:param path: the directory path to check
:returns: True if the directory tree is compliant, otherwise False.
"""
if not os.path.isdir(path):
log('Path specified %s is not a directory.' % path, level=ERROR)
raise ValueError("%s is not a directory." % path)
if not self.recursive:
return super(DirectoryPermissionAudit, self).is_compliant(path)
compliant = True
for root, dirs, _ in os.walk(path):
if len(dirs) > 0:
continue
if not super(DirectoryPermissionAudit, self).is_compliant(root):
compliant = False
continue
return compliant
def comply(self, path):
for root, dirs, _ in os.walk(path):
if len(dirs) > 0:
super(DirectoryPermissionAudit, self).comply(root)
class ReadOnly(BaseFileAudit):
"""Audits that files and folders are read only."""
def __init__(self, paths, *args, **kwargs):
super(ReadOnly, self).__init__(paths=paths, *args, **kwargs)
def is_compliant(self, path):
try:
output = check_output(['find', path, '-perm', '-go+w',
'-type', 'f']).strip()
# The find above will find any files which have permission sets
# which allow too broad of write access. As such, the path is
# compliant if there is no output.
if output:
return False
return True
except CalledProcessError as e:
log('Error occurred checking finding writable files for %s. '
'Error information is: command %s failed with returncode '
'%d and output %s.\n%s' % (path, e.cmd, e.returncode, e.output,
format_exc(e)), level=ERROR)
return False
def comply(self, path):
try:
check_output(['chmod', 'go-w', '-R', path])
except CalledProcessError as e:
log('Error occurred removing writeable permissions for %s. '
'Error information is: command %s failed with returncode '
'%d and output %s.\n%s' % (path, e.cmd, e.returncode, e.output,
format_exc(e)), level=ERROR)
class NoReadWriteForOther(BaseFileAudit):
"""Ensures that the files found under the base path are readable or
writable by anyone other than the owner or the group.
"""
def __init__(self, paths):
super(NoReadWriteForOther, self).__init__(paths)
def is_compliant(self, path):
try:
cmd = ['find', path, '-perm', '-o+r', '-type', 'f', '-o',
'-perm', '-o+w', '-type', 'f']
output = check_output(cmd).strip()
# The find above here will find any files which have read or
# write permissions for other, meaning there is too broad of access
# to read/write the file. As such, the path is compliant if there's
# no output.
if output:
return False
return True
except CalledProcessError as e:
log('Error occurred while finding files which are readable or '
'writable to the world in %s. '
'Command output is: %s.' % (path, e.output), level=ERROR)
def comply(self, path):
try:
check_output(['chmod', '-R', 'o-rw', path])
except CalledProcessError as e:
log('Error occurred attempting to change modes of files under '
'path %s. Output of command is: %s' % (path, e.output))
class NoSUIDSGIDAudit(BaseFileAudit):
"""Audits that specified files do not have SUID/SGID bits set."""
def __init__(self, paths, *args, **kwargs):
super(NoSUIDSGIDAudit, self).__init__(paths=paths, *args, **kwargs)
def is_compliant(self, path):
stat = self._get_stat(path)
if (stat.st_mode & (S_ISGID | S_ISUID)) != 0:
return False
return True
def comply(self, path):
try:
log('Removing suid/sgid from %s.' % path, level=DEBUG)
check_output(['chmod', '-s', path])
except CalledProcessError as e:
log('Error occurred removing suid/sgid from %s.'
'Error information is: command %s failed with returncode '
'%d and output %s.\n%s' % (path, e.cmd, e.returncode, e.output,
format_exc(e)), level=ERROR)
class TemplatedFile(BaseFileAudit):
"""The TemplatedFileAudit audits the contents of a templated file.
This audit renders a file from a template, sets the appropriate file
permissions, then generates a hashsum with which to check the content
changed.
"""
def __init__(self, path, context, template_dir, mode, user='root',
group='root', service_actions=None, **kwargs):
self.context = context
self.user = user
self.group = group
self.mode = mode
self.template_dir = template_dir
self.service_actions = service_actions
super(TemplatedFile, self).__init__(paths=path, always_comply=True,
**kwargs)
def is_compliant(self, path):
"""Determines if the templated file is compliant.
A templated file is only compliant if it has not changed (as
determined by its sha256 hashsum) AND its file permissions are set
appropriately.
:param path: the path to check compliance.
"""
same_templates = self.templates_match(path)
same_content = self.contents_match(path)
same_permissions = self.permissions_match(path)
if same_content and same_permissions and same_templates:
return True
return False
def run_service_actions(self):
"""Run any actions on services requested."""
if not self.service_actions:
return
for svc_action in self.service_actions:
name = svc_action['service']
actions = svc_action['actions']
log("Running service '%s' actions '%s'" % (name, actions),
level=DEBUG)
for action in actions:
cmd = ['service', name, action]
try:
check_call(cmd)
except CalledProcessError as exc:
log("Service name='%s' action='%s' failed - %s" %
(name, action, exc), level=WARNING)
def comply(self, path):
"""Ensures the contents and the permissions of the file.
:param path: the path to correct
"""
dirname = os.path.dirname(path)
if not os.path.exists(dirname):
os.makedirs(dirname)
self.pre_write()
render_and_write(self.template_dir, path, self.context())
utils.ensure_permissions(path, self.user, self.group, self.mode)
self.run_service_actions()
self.save_checksum(path)
self.post_write()
def pre_write(self):
"""Invoked prior to writing the template."""
pass
def post_write(self):
"""Invoked after writing the template."""
pass
def templates_match(self, path):
"""Determines if the template files are the same.
The template file equality is determined by the hashsum of the
template files themselves. If there is no hashsum, then the content
cannot be sure to be the same so treat it as if they changed.
Otherwise, return whether or not the hashsums are the same.
:param path: the path to check
:returns: boolean
"""
template_path = get_template_path(self.template_dir, path)
key = 'hardening:template:%s' % template_path
template_checksum = file_hash(template_path)
kv = unitdata.kv()
stored_tmplt_checksum = kv.get(key)
if not stored_tmplt_checksum:
kv.set(key, template_checksum)
kv.flush()
log('Saved template checksum for %s.' % template_path,
level=DEBUG)
# Since we don't have a template checksum, then assume it doesn't
# match and return that the template is different.
return False
elif stored_tmplt_checksum != template_checksum:
kv.set(key, template_checksum)
kv.flush()
log('Updated template checksum for %s.' % template_path,
level=DEBUG)
return False
# Here the template hasn't changed based upon the calculated
# checksum of the template and what was previously stored.
return True
def contents_match(self, path):
"""Determines if the file content is the same.
This is determined by comparing hashsum of the file contents and
the saved hashsum. If there is no hashsum, then the content cannot
be sure to be the same so treat them as if they are not the same.
Otherwise, return True if the hashsums are the same, False if they
are not the same.
:param path: the file to check.
"""
checksum = file_hash(path)
kv = unitdata.kv()
stored_checksum = kv.get('hardening:%s' % path)
if not stored_checksum:
# If the checksum hasn't been generated, return False to ensure
# the file is written and the checksum stored.
log('Checksum for %s has not been calculated.' % path, level=DEBUG)
return False
elif stored_checksum != checksum:
log('Checksum mismatch for %s.' % path, level=DEBUG)
return False
return True
def permissions_match(self, path):
"""Determines if the file owner and permissions match.
:param path: the path to check.
"""
audit = FilePermissionAudit(path, self.user, self.group, self.mode)
return audit.is_compliant(path)
def save_checksum(self, path):
"""Calculates and saves the checksum for the path specified.
:param path: the path of the file to save the checksum.
"""
checksum = file_hash(path)
kv = unitdata.kv()
kv.set('hardening:%s' % path, checksum)
kv.flush()
class DeletedFile(BaseFileAudit):
"""Audit to ensure that a file is deleted."""
def __init__(self, paths):
super(DeletedFile, self).__init__(paths)
def is_compliant(self, path):
return not os.path.exists(path)
def comply(self, path):
os.remove(path)
class FileContentAudit(BaseFileAudit):
"""Audit the contents of a file."""
def __init__(self, paths, cases, **kwargs):
# Cases we expect to pass
self.pass_cases = cases.get('pass', [])
# Cases we expect to fail
self.fail_cases = cases.get('fail', [])
super(FileContentAudit, self).__init__(paths, **kwargs)
def is_compliant(self, path):
"""
Given a set of content matching cases i.e. tuple(regex, bool) where
bool value denotes whether or not regex is expected to match, check that
all cases match as expected with the contents of the file. Cases can be
expected to pass of fail.
:param path: Path of file to check.
:returns: Boolean value representing whether or not all cases are
found to be compliant.
"""
log("Auditing contents of file '%s'" % (path), level=DEBUG)
with open(path, 'r') as fd:
contents = fd.read()
matches = 0
for pattern in self.pass_cases:
key = re.compile(pattern, flags=re.MULTILINE)
results = re.search(key, contents)
if results:
matches += 1
else:
log("Pattern '%s' was expected to pass but instead it failed"
% (pattern), level=WARNING)
for pattern in self.fail_cases:
key = re.compile(pattern, flags=re.MULTILINE)
results = re.search(key, contents)
if not results:
matches += 1
else:
log("Pattern '%s' was expected to fail but instead it passed"
% (pattern), level=WARNING)
total = len(self.pass_cases) + len(self.fail_cases)
log("Checked %s cases and %s passed" % (total, matches), level=DEBUG)
return matches == total
def comply(self, *args, **kwargs):
"""NOOP since we just issue warnings. This is to avoid the
NotImplememtedError.
"""
log("Not applying any compliance criteria, only checks.", level=INFO)

0
hooks/charmhelpers/contrib/hardening/defaults/__init__.py Normal file
View File

13
hooks/charmhelpers/contrib/hardening/defaults/apache.yaml Normal file
View File

@ -0,0 +1,13 @@
# NOTE: this file contains the default configuration for the 'apache' hardening
# code. If you want to override any settings you must add them to a file
# called hardening.yaml in the root directory of your charm using the
# name 'apache' as the root key followed by any of the following with new
# values.
common:
apache_dir: '/etc/apache2'
hardening:
traceenable: 'off'
allowed_http_methods: "GET POST"
modules_to_disable: [ cgi, cgid ]

9
hooks/charmhelpers/contrib/hardening/defaults/apache.yaml.schema Normal file
View File

@ -0,0 +1,9 @@
# NOTE: this schema must contain all valid keys from it's associated defaults
# file. It is used to validate user-provided overrides.
common:
apache_dir:
traceenable:
hardening:
allowed_http_methods:
modules_to_disable:

38
hooks/charmhelpers/contrib/hardening/defaults/mysql.yaml Normal file
View File

@ -0,0 +1,38 @@
# NOTE: this file contains the default configuration for the 'mysql' hardening
# code. If you want to override any settings you must add them to a file
# called hardening.yaml in the root directory of your charm using the
# name 'mysql' as the root key followed by any of the following with new
# values.
hardening:
mysql-conf: /etc/mysql/my.cnf
hardening-conf: /etc/mysql/conf.d/hardening.cnf
security:
# @see http://www.symantec.com/connect/articles/securing-mysql-step-step
# @see http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_chroot
chroot: None
# @see http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_safe-user-create
safe-user-create: 1
# @see http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_secure-auth
secure-auth: 1
# @see http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_symbolic-links
skip-symbolic-links: 1
# @see http://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_skip-show-database
skip-show-database: True
# @see http://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_local_infile
local-infile: 0
# @see https://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_allow-suspicious-udfs
allow-suspicious-udfs: 0
# @see https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_automatic_sp_privileges
automatic-sp-privileges: 0
# @see https://dev.mysql.com/doc/refman/5.7/en/server-options.html#option_mysqld_secure-file-priv
secure-file-priv: /tmp

15
hooks/charmhelpers/contrib/hardening/defaults/mysql.yaml.schema Normal file
View File

@ -0,0 +1,15 @@
# NOTE: this schema must contain all valid keys from it's associated defaults
# file. It is used to validate user-provided overrides.
hardening:
mysql-conf:
hardening-conf:
security:
chroot:
safe-user-create:
secure-auth:
skip-symbolic-links:
skip-show-database:
local-infile:
allow-suspicious-udfs:
automatic-sp-privileges:
secure-file-priv:

67
hooks/charmhelpers/contrib/hardening/defaults/os.yaml Normal file
View File

@ -0,0 +1,67 @@
# NOTE: this file contains the default configuration for the 'os' hardening
# code. If you want to override any settings you must add them to a file
# called hardening.yaml in the root directory of your charm using the
# name 'os' as the root key followed by any of the following with new
# values.
general:
desktop_enable: False # (type:boolean)
environment:
extra_user_paths: []
umask: 027
root_path: /
auth:
pw_max_age: 60
# discourage password cycling
pw_min_age: 7
retries: 5
lockout_time: 600
timeout: 60
allow_homeless: False # (type:boolean)
pam_passwdqc_enable: True # (type:boolean)
pam_passwdqc_options: 'min=disabled,disabled,16,12,8'
root_ttys:
console
tty1
tty2
tty3
tty4
tty5
tty6
uid_min: 1000
gid_min: 1000
sys_uid_min: 100
sys_uid_max: 999
sys_gid_min: 100
sys_gid_max: 999
chfn_restrict:
security:
users_allow: []
suid_sgid_enforce: True # (type:boolean)
# user-defined blacklist and whitelist
suid_sgid_blacklist: []
suid_sgid_whitelist: []
# if this is True, remove any suid/sgid bits from files that were not in the whitelist
suid_sgid_dry_run_on_unknown: False # (type:boolean)
suid_sgid_remove_from_unknown: False # (type:boolean)
# remove packages with known issues
packages_clean: True # (type:boolean)
packages_list:
xinetd
inetd
ypserv
telnet-server
rsh-server
rsync
kernel_enable_module_loading: True # (type:boolean)
kernel_enable_core_dump: False # (type:boolean)
sysctl:
kernel_secure_sysrq: 244 # 4 + 16 + 32 + 64 + 128
kernel_enable_sysrq: False # (type:boolean)
forwarding: False # (type:boolean)
ipv6_enable: False # (type:boolean)
arp_restricted: True # (type:boolean)

42
hooks/charmhelpers/contrib/hardening/defaults/os.yaml.schema Normal file
View File

@ -0,0 +1,42 @@
# NOTE: this schema must contain all valid keys from it's associated defaults
# file. It is used to validate user-provided overrides.
general:
desktop_enable:
environment:
extra_user_paths:
umask:
root_path:
auth:
pw_max_age:
pw_min_age:
retries:
lockout_time:
timeout:
allow_homeless:
pam_passwdqc_enable:
pam_passwdqc_options:
root_ttys:
uid_min:
gid_min:
sys_uid_min:
sys_uid_max:
sys_gid_min:
sys_gid_max:
chfn_restrict:
security:
users_allow:
suid_sgid_enforce:
suid_sgid_blacklist:
suid_sgid_whitelist:
suid_sgid_dry_run_on_unknown:
suid_sgid_remove_from_unknown:
packages_clean:
packages_list:
kernel_enable_module_loading:
kernel_enable_core_dump:
sysctl:
kernel_secure_sysrq:
kernel_enable_sysrq:
forwarding:
ipv6_enable:
arp_restricted:

49
hooks/charmhelpers/contrib/hardening/defaults/ssh.yaml Normal file
View File

@ -0,0 +1,49 @@
# NOTE: this file contains the default configuration for the 'ssh' hardening
# code. If you want to override any settings you must add them to a file
# called hardening.yaml in the root directory of your charm using the
# name 'ssh' as the root key followed by any of the following with new
# values.
common:
service_name: 'ssh'
network_ipv6_enable: False # (type:boolean)
ports: [22]
remote_hosts: []
client:
package: 'openssh-client'
cbc_required: False # (type:boolean)
weak_hmac: False # (type:boolean)
weak_kex: False # (type:boolean)
roaming: False
password_authentication: 'no'
server:
host_key_files: ['/etc/ssh/ssh_host_rsa_key', '/etc/ssh/ssh_host_dsa_key',
'/etc/ssh/ssh_host_ecdsa_key']
cbc_required: False # (type:boolean)
weak_hmac: False # (type:boolean)
weak_kex: False # (type:boolean)
allow_root_with_key: False # (type:boolean)
allow_tcp_forwarding: 'no'
allow_agent_forwarding: 'no'
allow_x11_forwarding: 'no'
use_privilege_separation: 'sandbox'
listen_to: ['0.0.0.0']
use_pam: 'no'
package: 'openssh-server'
password_authentication: 'no'
alive_interval: '600'
alive_count: '3'
sftp_enable: False # (type:boolean)
sftp_group: 'sftponly'
sftp_chroot: '/home/%u'
deny_users: []
allow_users: []
deny_groups: []
allow_groups: []
print_motd: 'no'
print_last_log: 'no'
use_dns: 'no'
max_auth_tries: 2
max_sessions: 10

42
hooks/charmhelpers/contrib/hardening/defaults/ssh.yaml.schema Normal file
View File

@ -0,0 +1,42 @@
# NOTE: this schema must contain all valid keys from it's associated defaults
# file. It is used to validate user-provided overrides.
common:
service_name:
network_ipv6_enable:
ports:
remote_hosts:
client:
package:
cbc_required:
weak_hmac:
weak_kex:
roaming:
password_authentication:
server:
host_key_files:
cbc_required:
weak_hmac:
weak_kex:
allow_root_with_key:
allow_tcp_forwarding:
allow_agent_forwarding:
allow_x11_forwarding:
use_privilege_separation:
listen_to:
use_pam:
package:
password_authentication:
alive_interval:
alive_count:
sftp_enable:
sftp_group:
sftp_chroot:
deny_users:
allow_users:
deny_groups:
allow_groups:
print_motd:
print_last_log:
use_dns:
max_auth_tries:
max_sessions:

84
hooks/charmhelpers/contrib/hardening/harden.py Normal file
View File

@ -0,0 +1,84 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import six
from collections import OrderedDict
from charmhelpers.core.hookenv import (
config,
log,
DEBUG,
WARNING,
)
from charmhelpers.contrib.hardening.host.checks import run_os_checks
from charmhelpers.contrib.hardening.ssh.checks import run_ssh_checks
from charmhelpers.contrib.hardening.mysql.checks import run_mysql_checks
from charmhelpers.contrib.hardening.apache.checks import run_apache_checks
def harden(overrides=None):
"""Hardening decorator.
This is the main entry point for running the hardening stack. In order to
run modules of the stack you must add this decorator to charm hook(s) and
ensure that your charm config.yaml contains the 'harden' option set to
one or more of the supported modules. Setting these will cause the
corresponding hardening code to be run when the hook fires.
This decorator can and should be applied to more than one hook or function
such that hardening modules are called multiple times. This is because
subsequent calls will perform auditing checks that will report any changes
to resources hardened by the first run (and possibly perform compliance
actions as a result of any detected infractions).
:param overrides: Optional list of stack modules used to override those
provided with 'harden' config.
:returns: Returns value returned by decorated function once executed.
"""
def _harden_inner1(f):
log("Hardening function '%s'" % (f.__name__), level=DEBUG)
def _harden_inner2(*args, **kwargs):
RUN_CATALOG = OrderedDict([('os', run_os_checks),
('ssh', run_ssh_checks),
('mysql', run_mysql_checks),
('apache', run_apache_checks)])
enabled = overrides or (config("harden") or "").split()
if enabled:
modules_to_run = []
# modules will always be performed in the following order
for module, func in six.iteritems(RUN_CATALOG):
if module in enabled:
enabled.remove(module)
modules_to_run.append(func)
if enabled:
log("Unknown hardening modules '%s' - ignoring" %
(', '.join(enabled)), level=WARNING)
for hardener in modules_to_run:
log("Executing hardening module '%s'" %
(hardener.__name__), level=DEBUG)
hardener()
else:
log("No hardening applied to '%s'" % (f.__name__), level=DEBUG)
return f(*args, **kwargs)
return _harden_inner2
return _harden_inner1

19
hooks/charmhelpers/contrib/hardening/host/__init__.py Normal file
View File

@ -0,0 +1,19 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from os import path
TEMPLATES_DIR = path.join(path.dirname(__file__), 'templates')

50
hooks/charmhelpers/contrib/hardening/host/checks/__init__.py Normal file
View File

@ -0,0 +1,50 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.core.hookenv import (
log,
DEBUG,
)
from charmhelpers.contrib.hardening.host.checks import (
apt,
limits,
login,
minimize_access,
pam,
profile,
securetty,
suid_sgid,
sysctl
)
def run_os_checks():
log("Starting OS hardening checks.", level=DEBUG)
checks = apt.get_audits()
checks.extend(limits.get_audits())
checks.extend(login.get_audits())
checks.extend(minimize_access.get_audits())
checks.extend(pam.get_audits())
checks.extend(profile.get_audits())
checks.extend(securetty.get_audits())
checks.extend(suid_sgid.get_audits())
checks.extend(sysctl.get_audits())
for check in checks:
log("Running '%s' check" % (check.__class__.__name__), level=DEBUG)
check.ensure_compliance()
log("OS hardening checks complete.", level=DEBUG)

39
hooks/charmhelpers/contrib/hardening/host/checks/apt.py Normal file
View File

@ -0,0 +1,39 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.contrib.hardening.utils import get_settings
from charmhelpers.contrib.hardening.audits.apt import (
AptConfig,
RestrictedPackages,
)
def get_audits():
"""Get OS hardening apt audits.
:returns: dictionary of audits
"""
audits = [AptConfig([{'key': 'APT::Get::AllowUnauthenticated',
'expected': 'false'}])]
settings = get_settings('os')
clean_packages = settings['security']['packages_clean']
if clean_packages:
security_packages = settings['security']['packages_list']
if security_packages:
audits.append(RestrictedPackages(security_packages))
return audits

55
hooks/charmhelpers/contrib/hardening/host/checks/limits.py Normal file
View File

@ -0,0 +1,55 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.contrib.hardening.audits.file import (
DirectoryPermissionAudit,
TemplatedFile,
)
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get OS hardening security limits audits.
:returns: dictionary of audits
"""
audits = []
settings = utils.get_settings('os')
# Ensure that the /etc/security/limits.d directory is only writable
# by the root user, but others can execute and read.
audits.append(DirectoryPermissionAudit('/etc/security/limits.d',
user='root', group='root',
mode=0o755))
# If core dumps are not enabled, then don't allow core dumps to be
# created as they may contain sensitive information.
if not settings['security']['kernel_enable_core_dump']:
audits.append(TemplatedFile('/etc/security/limits.d/10.hardcore.conf',
SecurityLimitsContext(),
template_dir=TEMPLATES_DIR,
user='root', group='root', mode=0o0440))
return audits
class SecurityLimitsContext(object):
def __call__(self):
settings = utils.get_settings('os')
ctxt = {'disable_core_dump':
not settings['security']['kernel_enable_core_dump']}
return ctxt

67
hooks/charmhelpers/contrib/hardening/host/checks/login.py Normal file
View File

@ -0,0 +1,67 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from six import string_types
from charmhelpers.contrib.hardening.audits.file import TemplatedFile
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get OS hardening login.defs audits.
:returns: dictionary of audits
"""
audits = [TemplatedFile('/etc/login.defs', LoginContext(),
template_dir=TEMPLATES_DIR,
user='root', group='root', mode=0o0444)]
return audits
class LoginContext(object):
def __call__(self):
settings = utils.get_settings('os')
# Octal numbers in yaml end up being turned into decimal,
# so check if the umask is entered as a string (e.g. '027')
# or as an octal umask as we know it (e.g. 002). If its not
# a string assume it to be octal and turn it into an octal
# string.
umask = settings['environment']['umask']
if not isinstance(umask, string_types):
umask = '%s' % oct(umask)
ctxt = {
'additional_user_paths':
settings['environment']['extra_user_paths'],
'umask': umask,
'pwd_max_age': settings['auth']['pw_max_age'],
'pwd_min_age': settings['auth']['pw_min_age'],
'uid_min': settings['auth']['uid_min'],
'sys_uid_min': settings['auth']['sys_uid_min'],
'sys_uid_max': settings['auth']['sys_uid_max'],
'gid_min': settings['auth']['gid_min'],
'sys_gid_min': settings['auth']['sys_gid_min'],
'sys_gid_max': settings['auth']['sys_gid_max'],
'login_retries': settings['auth']['retries'],
'login_timeout': settings['auth']['timeout'],
'chfn_restrict': settings['auth']['chfn_restrict'],
'allow_login_without_home': settings['auth']['allow_homeless']
}
return ctxt

52
hooks/charmhelpers/contrib/hardening/host/checks/minimize_access.py Normal file
View File

@ -0,0 +1,52 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.contrib.hardening.audits.file import (
FilePermissionAudit,
ReadOnly,
)
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get OS hardening access audits.
:returns: dictionary of audits
"""
audits = []
settings = utils.get_settings('os')
# Remove write permissions from $PATH folders for all regular users.
# This prevents changing system-wide commands from normal users.
path_folders = {'/usr/local/sbin',
'/usr/local/bin',
'/usr/sbin',
'/usr/bin',
'/bin'}
extra_user_paths = settings['environment']['extra_user_paths']
path_folders.update(extra_user_paths)
audits.append(ReadOnly(path_folders))
# Only allow the root user to have access to the shadow file.
audits.append(FilePermissionAudit('/etc/shadow', 'root', 'root', 0o0600))
if 'change_user' not in settings['security']['users_allow']:
# su should only be accessible to user and group root, unless it is
# expressly defined to allow users to change to root via the
# security_users_allow config option.
audits.append(FilePermissionAudit('/bin/su', 'root', 'root', 0o750))
return audits

134
hooks/charmhelpers/contrib/hardening/host/checks/pam.py Normal file
View File

@ -0,0 +1,134 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from subprocess import (
check_output,
CalledProcessError,
)
from charmhelpers.core.hookenv import (
log,
DEBUG,
ERROR,
)
from charmhelpers.fetch import (
apt_install,
apt_purge,
apt_update,
)
from charmhelpers.contrib.hardening.audits.file import (
TemplatedFile,
DeletedFile,
)
from charmhelpers.contrib.hardening import utils
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
def get_audits():
"""Get OS hardening PAM authentication audits.
:returns: dictionary of audits
"""
audits = []
settings = utils.get_settings('os')
if settings['auth']['pam_passwdqc_enable']:
audits.append(PasswdqcPAM('/etc/passwdqc.conf'))
if settings['auth']['retries']:
audits.append(Tally2PAM('/usr/share/pam-configs/tally2'))
else:
audits.append(DeletedFile('/usr/share/pam-configs/tally2'))
return audits
class PasswdqcPAMContext(object):
def __call__(self):
ctxt = {}
settings = utils.get_settings('os')
ctxt['auth_pam_passwdqc_options'] = \
settings['auth']['pam_passwdqc_options']
return ctxt
class PasswdqcPAM(TemplatedFile):
"""The PAM Audit verifies the linux PAM settings."""
def __init__(self, path):
super(PasswdqcPAM, self).__init__(path=path,
template_dir=TEMPLATES_DIR,
context=PasswdqcPAMContext(),
user='root',
group='root',
mode=0o0640)
def pre_write(self):
# Always remove?
for pkg in ['libpam-ccreds', 'libpam-cracklib']:
log("Purging package '%s'" % pkg, level=DEBUG),
apt_purge(pkg)
apt_update(fatal=True)
for pkg in ['libpam-passwdqc']:
log("Installing package '%s'" % pkg, level=DEBUG),
apt_install(pkg)
def post_write(self):
"""Updates the PAM configuration after the file has been written"""
try:
check_output(['pam-auth-update', '--package'])
except CalledProcessError as e:
log('Error calling pam-auth-update: %s' % e, level=ERROR)
class Tally2PAMContext(object):
def __call__(self):
ctxt = {}
settings = utils.get_settings('os')
ctxt['auth_lockout_time'] = settings['auth']['lockout_time']
ctxt['auth_retries'] = settings['auth']['retries']
return ctxt
class Tally2PAM(TemplatedFile):
"""The PAM Audit verifies the linux PAM settings."""
def __init__(self, path):
super(Tally2PAM, self).__init__(path=path,
template_dir=TEMPLATES_DIR,
context=Tally2PAMContext(),
user='root',
group='root',
mode=0o0640)
def pre_write(self):
# Always remove?
apt_purge('libpam-ccreds')
apt_update(fatal=True)
apt_install('libpam-modules')
def post_write(self):
"""Updates the PAM configuration after the file has been written"""
try:
check_output(['pam-auth-update', '--package'])
except CalledProcessError as e:
log('Error calling pam-auth-update: %s' % e, level=ERROR)

45
hooks/charmhelpers/contrib/hardening/host/checks/profile.py Normal file
View File

@ -0,0 +1,45 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.contrib.hardening.audits.file import TemplatedFile
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get OS hardening profile audits.
:returns: dictionary of audits
"""
audits = []
settings = utils.get_settings('os')
# If core dumps are not enabled, then don't allow core dumps to be
# created as they may contain sensitive information.
if not settings['security']['kernel_enable_core_dump']:
audits.append(TemplatedFile('/etc/profile.d/pinerolo_profile.sh',
ProfileContext(),
template_dir=TEMPLATES_DIR,
mode=0o0755, user='root', group='root'))
return audits
class ProfileContext(object):
def __call__(self):
ctxt = {}
return ctxt

39
hooks/charmhelpers/contrib/hardening/host/checks/securetty.py Normal file
View File

@ -0,0 +1,39 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.contrib.hardening.audits.file import TemplatedFile
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get OS hardening Secure TTY audits.
:returns: dictionary of audits
"""
audits = []
audits.append(TemplatedFile('/etc/securetty', SecureTTYContext(),
template_dir=TEMPLATES_DIR,
mode=0o0400, user='root', group='root'))
return audits
class SecureTTYContext(object):
def __call__(self):
settings = utils.get_settings('os')
ctxt = {'ttys': settings['auth']['root_ttys']}
return ctxt

131
hooks/charmhelpers/contrib/hardening/host/checks/suid_sgid.py Normal file
View File

@ -0,0 +1,131 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import subprocess
from charmhelpers.core.hookenv import (
log,
INFO,
)
from charmhelpers.contrib.hardening.audits.file import NoSUIDSGIDAudit
from charmhelpers.contrib.hardening import utils
BLACKLIST = ['/usr/bin/rcp', '/usr/bin/rlogin', '/usr/bin/rsh',
'/usr/libexec/openssh/ssh-keysign',
'/usr/lib/openssh/ssh-keysign',
'/sbin/netreport',
'/usr/sbin/usernetctl',
'/usr/sbin/userisdnctl',
'/usr/sbin/pppd',
'/usr/bin/lockfile',
'/usr/bin/mail-lock',
'/usr/bin/mail-unlock',
'/usr/bin/mail-touchlock',
'/usr/bin/dotlockfile',
'/usr/bin/arping',
'/usr/sbin/uuidd',
'/usr/bin/mtr',
'/usr/lib/evolution/camel-lock-helper-1.2',
'/usr/lib/pt_chown',
'/usr/lib/eject/dmcrypt-get-device',
'/usr/lib/mc/cons.saver']
WHITELIST = ['/bin/mount', '/bin/ping', '/bin/su', '/bin/umount',
'/sbin/pam_timestamp_check', '/sbin/unix_chkpwd', '/usr/bin/at',
'/usr/bin/gpasswd', '/usr/bin/locate', '/usr/bin/newgrp',
'/usr/bin/passwd', '/usr/bin/ssh-agent',
'/usr/libexec/utempter/utempter', '/usr/sbin/lockdev',
'/usr/sbin/sendmail.sendmail', '/usr/bin/expiry',
'/bin/ping6', '/usr/bin/traceroute6.iputils',
'/sbin/mount.nfs', '/sbin/umount.nfs',
'/sbin/mount.nfs4', '/sbin/umount.nfs4',
'/usr/bin/crontab',
'/usr/bin/wall', '/usr/bin/write',
'/usr/bin/screen',
'/usr/bin/mlocate',
'/usr/bin/chage', '/usr/bin/chfn', '/usr/bin/chsh',
'/bin/fusermount',
'/usr/bin/pkexec',
'/usr/bin/sudo', '/usr/bin/sudoedit',
'/usr/sbin/postdrop', '/usr/sbin/postqueue',
'/usr/sbin/suexec',
'/usr/lib/squid/ncsa_auth', '/usr/lib/squid/pam_auth',
'/usr/kerberos/bin/ksu',
'/usr/sbin/ccreds_validate',
'/usr/bin/Xorg',
'/usr/bin/X',
'/usr/lib/dbus-1.0/dbus-daemon-launch-helper',
'/usr/lib/vte/gnome-pty-helper',
'/usr/lib/libvte9/gnome-pty-helper',
'/usr/lib/libvte-2.90-9/gnome-pty-helper']
def get_audits():
"""Get OS hardening suid/sgid audits.
:returns: dictionary of audits
"""
checks = []
settings = utils.get_settings('os')
if not settings['security']['suid_sgid_enforce']:
log("Skipping suid/sgid hardening", level=INFO)
return checks
# Build the blacklist and whitelist of files for suid/sgid checks.
# There are a total of 4 lists:
# 1. the system blacklist
# 2. the system whitelist
# 3. the user blacklist
# 4. the user whitelist
#
# The blacklist is the set of paths which should NOT have the suid/sgid bit
# set and the whitelist is the set of paths which MAY have the suid/sgid
# bit setl. The user whitelist/blacklist effectively override the system
# whitelist/blacklist.
u_b = settings['security']['suid_sgid_blacklist']
u_w = settings['security']['suid_sgid_whitelist']
blacklist = set(BLACKLIST) - set(u_w + u_b)
whitelist = set(WHITELIST) - set(u_b + u_w)
checks.append(NoSUIDSGIDAudit(blacklist))
dry_run = settings['security']['suid_sgid_dry_run_on_unknown']
if settings['security']['suid_sgid_remove_from_unknown'] or dry_run:
# If the policy is a dry_run (e.g. complain only) or remove unknown
# suid/sgid bits then find all of the paths which have the suid/sgid
# bit set and then remove the whitelisted paths.
root_path = settings['environment']['root_path']
unknown_paths = find_paths_with_suid_sgid(root_path) - set(whitelist)
checks.append(NoSUIDSGIDAudit(unknown_paths, unless=dry_run))
return checks
def find_paths_with_suid_sgid(root_path):
"""Finds all paths/files which have an suid/sgid bit enabled.
Starting with the root_path, this will recursively find all paths which
have an suid or sgid bit set.
"""
cmd = ['find', root_path, '-perm', '-4000', '-o', '-perm', '-2000',
'-type', 'f', '!', '-path', '/proc/*', '-print']
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, _ = p.communicate()
return set(out.split('\n'))

211
hooks/charmhelpers/contrib/hardening/host/checks/sysctl.py Normal file
View File

@ -0,0 +1,211 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import os
import platform
import re
import six
import subprocess
from charmhelpers.core.hookenv import (
log,
INFO,
WARNING,
)
from charmhelpers.contrib.hardening import utils
from charmhelpers.contrib.hardening.audits.file import (
FilePermissionAudit,
TemplatedFile,
)
from charmhelpers.contrib.hardening.host import TEMPLATES_DIR
SYSCTL_DEFAULTS = """net.ipv4.ip_forward=%(net_ipv4_ip_forward)s
net.ipv6.conf.all.forwarding=%(net_ipv6_conf_all_forwarding)s
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
net.ipv4.icmp_echo_ignore_broadcasts=1
net.ipv4.icmp_ignore_bogus_error_responses=1
net.ipv4.icmp_ratelimit=100
net.ipv4.icmp_ratemask=88089
net.ipv6.conf.all.disable_ipv6=%(net_ipv6_conf_all_disable_ipv6)s
net.ipv4.tcp_timestamps=%(net_ipv4_tcp_timestamps)s
net.ipv4.conf.all.arp_ignore=%(net_ipv4_conf_all_arp_ignore)s
net.ipv4.conf.all.arp_announce=%(net_ipv4_conf_all_arp_announce)s
net.ipv4.tcp_rfc1337=1
net.ipv4.tcp_syncookies=1
net.ipv4.conf.all.shared_media=1
net.ipv4.conf.default.shared_media=1
net.ipv4.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv4.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv6.conf.all.accept_redirects=0
net.ipv6.conf.default.accept_redirects=0
net.ipv4.conf.all.secure_redirects=0
net.ipv4.conf.default.secure_redirects=0
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
net.ipv4.conf.all.log_martians=0
net.ipv6.conf.default.router_solicitations=0
net.ipv6.conf.default.accept_ra_rtr_pref=0
net.ipv6.conf.default.accept_ra_pinfo=0
net.ipv6.conf.default.accept_ra_defrtr=0
net.ipv6.conf.default.autoconf=0
net.ipv6.conf.default.dad_transmits=0
net.ipv6.conf.default.max_addresses=1
net.ipv6.conf.all.accept_ra=0
net.ipv6.conf.default.accept_ra=0
kernel.modules_disabled=%(kernel_modules_disabled)s
kernel.sysrq=%(kernel_sysrq)s
fs.suid_dumpable=%(fs_suid_dumpable)s
kernel.randomize_va_space=2
"""
def get_audits():
"""Get OS hardening sysctl audits.
:returns: dictionary of audits
"""
audits = []
settings = utils.get_settings('os')
# Apply the sysctl settings which are configured to be applied.
audits.append(SysctlConf())
# Make sure that only root has access to the sysctl.conf file, and
# that it is read-only.
audits.append(FilePermissionAudit('/etc/sysctl.conf',
user='root',
group='root', mode=0o0440))
# If module loading is not enabled, then ensure that the modules
# file has the appropriate permissions and rebuild the initramfs
if not settings['security']['kernel_enable_module_loading']:
audits.append(ModulesTemplate())
return audits
class ModulesContext(object):
def __call__(self):
settings = utils.get_settings('os')
with open('/proc/cpuinfo', 'r') as fd:
cpuinfo = fd.readlines()
for line in cpuinfo:
match = re.search(r"^vendor_id\s+:\s+(.+)", line)
if match:
vendor = match.group(1)
if vendor == "GenuineIntel":
vendor = "intel"
elif vendor == "AuthenticAMD":
vendor = "amd"
ctxt = {'arch': platform.processor(),
'cpuVendor': vendor,
'desktop_enable': settings['general']['desktop_enable']}
return ctxt
class ModulesTemplate(object):
def __init__(self):
super(ModulesTemplate, self).__init__('/etc/initramfs-tools/modules',
ModulesContext(),
templates_dir=TEMPLATES_DIR,
user='root', group='root',
mode=0o0440)
def post_write(self):
subprocess.check_call(['update-initramfs', '-u'])
class SysCtlHardeningContext(object):
def __call__(self):
settings = utils.get_settings('os')
ctxt = {'sysctl': {}}
log("Applying sysctl settings", level=INFO)
extras = {'net_ipv4_ip_forward': 0,
'net_ipv6_conf_all_forwarding': 0,
'net_ipv6_conf_all_disable_ipv6': 1,
'net_ipv4_tcp_timestamps': 0,
'net_ipv4_conf_all_arp_ignore': 0,
'net_ipv4_conf_all_arp_announce': 0,
'kernel_sysrq': 0,
'fs_suid_dumpable': 0,
'kernel_modules_disabled': 1}
if settings['sysctl']['ipv6_enable']:
extras['net_ipv6_conf_all_disable_ipv6'] = 0
if settings['sysctl']['forwarding']:
extras['net_ipv4_ip_forward'] = 1
extras['net_ipv6_conf_all_forwarding'] = 1
if settings['sysctl']['arp_restricted']:
extras['net_ipv4_conf_all_arp_ignore'] = 1
extras['net_ipv4_conf_all_arp_announce'] = 2
if settings['security']['kernel_enable_module_loading']:
extras['kernel_modules_disabled'] = 0
if settings['sysctl']['kernel_enable_sysrq']:
sysrq_val = settings['sysctl']['kernel_secure_sysrq']
extras['kernel_sysrq'] = sysrq_val
if settings['security']['kernel_enable_core_dump']:
extras['fs_suid_dumpable'] = 1
settings.update(extras)
for d in (SYSCTL_DEFAULTS % settings).split():
d = d.strip().partition('=')
key = d[0].strip()
path = os.path.join('/proc/sys', key.replace('.', '/'))
if not os.path.exists(path):
log("Skipping '%s' since '%s' does not exist" % (key, path),
level=WARNING)
continue
ctxt['sysctl'][key] = d[2] or None
# Translate for python3
return {'sysctl_settings':
[(k, v) for k, v in six.iteritems(ctxt['sysctl'])]}
class SysctlConf(TemplatedFile):
"""An audit check for sysctl settings."""
def __init__(self):
self.conffile = '/etc/sysctl.d/99-juju-hardening.conf'
super(SysctlConf, self).__init__(self.conffile,
SysCtlHardeningContext(),
template_dir=TEMPLATES_DIR,
user='root', group='root',
mode=0o0440)
def post_write(self):
try:
subprocess.check_call(['sysctl', '-p', self.conffile])
except subprocess.CalledProcessError as e:
# NOTE: on some systems if sysctl cannot apply all settings it
# will return non-zero as well.
log("sysctl command returned an error (maybe some "
"keys could not be set) - %s" % (e),
level=WARNING)

8
hooks/charmhelpers/contrib/hardening/host/templates/10.hardcore.conf Normal file
View File

@ -0,0 +1,8 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
{% if disable_core_dump -%}
# Prevent core dumps for all users. These are usually only needed by developers and may contain sensitive information.
* hard core 0
{% endif %}

7
hooks/charmhelpers/contrib/hardening/host/templates/99-juju-hardening.conf Normal file
View File

@ -0,0 +1,7 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
{% for key, value in sysctl_settings -%}
{{ key }}={{ value }}
{% endfor -%}

0
hooks/charmhelpers/contrib/hardening/host/templates/__init__.py Normal file
View File

349
hooks/charmhelpers/contrib/hardening/host/templates/login.defs Normal file
View File

@ -0,0 +1,349 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
#
# /etc/login.defs - Configuration control definitions for the login package.
#
# Three items must be defined: MAIL_DIR, ENV_SUPATH, and ENV_PATH.
# If unspecified, some arbitrary (and possibly incorrect) value will
# be assumed. All other items are optional - if not specified then
# the described action or option will be inhibited.
#
# Comment lines (lines beginning with "#") and blank lines are ignored.
#
# Modified for Linux. --marekm
# REQUIRED for useradd/userdel/usermod
# Directory where mailboxes reside, _or_ name of file, relative to the
# home directory. If you _do_ define MAIL_DIR and MAIL_FILE,
# MAIL_DIR takes precedence.
#
# Essentially:
# - MAIL_DIR defines the location of users mail spool files
# (for mbox use) by appending the username to MAIL_DIR as defined
# below.
# - MAIL_FILE defines the location of the users mail spool files as the
# fully-qualified filename obtained by prepending the user home
# directory before $MAIL_FILE
#
# NOTE: This is no more used for setting up users MAIL environment variable
# which is, starting from shadow 4.0.12-1 in Debian, entirely the
# job of the pam_mail PAM modules
# See default PAM configuration files provided for
# login, su, etc.
#
# This is a temporary situation: setting these variables will soon
# move to /etc/default/useradd and the variables will then be
# no more supported
MAIL_DIR /var/mail
#MAIL_FILE .mail
#
# Enable logging and display of /var/log/faillog login failure info.
# This option conflicts with the pam_tally PAM module.
#
FAILLOG_ENAB yes
#
# Enable display of unknown usernames when login failures are recorded.
#
# WARNING: Unknown usernames may become world readable.
# See #290803 and #298773 for details about how this could become a security
# concern
LOG_UNKFAIL_ENAB no
#
# Enable logging of successful logins
#
LOG_OK_LOGINS yes
#
# Enable "syslog" logging of su activity - in addition to sulog file logging.
# SYSLOG_SG_ENAB does the same for newgrp and sg.
#
SYSLOG_SU_ENAB yes
SYSLOG_SG_ENAB yes
#
# If defined, all su activity is logged to this file.
#
#SULOG_FILE /var/log/sulog
#
# If defined, file which maps tty line to TERM environment parameter.
# Each line of the file is in a format something like "vt100 tty01".
#
#TTYTYPE_FILE /etc/ttytype
#
# If defined, login failures will be logged here in a utmp format
# last, when invoked as lastb, will read /var/log/btmp, so...
#
FTMP_FILE /var/log/btmp
#
# If defined, the command name to display when running "su -". For
# example, if this is defined as "su" then a "ps" will display the
# command is "-su". If not defined, then "ps" would display the
# name of the shell actually being run, e.g. something like "-sh".
#
SU_NAME su
#
# If defined, file which inhibits all the usual chatter during the login
# sequence. If a full pathname, then hushed mode will be enabled if the
# user's name or shell are found in the file. If not a full pathname, then
# hushed mode will be enabled if the file exists in the user's home directory.
#
HUSHLOGIN_FILE .hushlogin
#HUSHLOGIN_FILE /etc/hushlogins
#
# *REQUIRED* The default PATH settings, for superuser and normal users.
#
# (they are minimal, add the rest in the shell startup files)
ENV_SUPATH PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ENV_PATH PATH=/usr/local/bin:/usr/bin:/bin{% if additional_user_paths %}{{ additional_user_paths }}{% endif %}
#
# Terminal permissions
#
# TTYGROUP Login tty will be assigned this group ownership.
# TTYPERM Login tty will be set to this permission.
#
# If you have a "write" program which is "setgid" to a special group
# which owns the terminals, define TTYGROUP to the group number and
# TTYPERM to 0620. Otherwise leave TTYGROUP commented out and assign
# TTYPERM to either 622 or 600.
#
# In Debian /usr/bin/bsd-write or similar programs are setgid tty
# However, the default and recommended value for TTYPERM is still 0600
# to not allow anyone to write to anyone else console or terminal
# Users can still allow other people to write them by issuing
# the "mesg y" command.
TTYGROUP tty
TTYPERM 0600
#
# Login configuration initializations:
#
# ERASECHAR Terminal ERASE character ('\010' = backspace).
# KILLCHAR Terminal KILL character ('\025' = CTRL/U).
# UMASK Default "umask" value.
#
# The ERASECHAR and KILLCHAR are used only on System V machines.
#
# UMASK is the default umask value for pam_umask and is used by
# useradd and newusers to set the mode of the new home directories.
# 022 is the "historical" value in Debian for UMASK
# 027, or even 077, could be considered better for privacy
# There is no One True Answer here : each sysadmin must make up his/her
# mind.
#
# If USERGROUPS_ENAB is set to "yes", that will modify this UMASK default value
# for private user groups, i. e. the uid is the same as gid, and username is
# the same as the primary group name: for these, the user permissions will be
# used as group permissions, e. g. 022 will become 002.
#
# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
#
ERASECHAR 0177
KILLCHAR 025
UMASK {{ umask }}
# Enable setting of the umask group bits to be the same as owner bits (examples: `022` -> `002`, `077` -> `007`) for non-root users, if the uid is the same as gid, and username is the same as the primary group name.
# If set to yes, userdel will remove the user´s group if it contains no more members, and useradd will create by default a group with the name of the user.
USERGROUPS_ENAB yes
#
# Password aging controls:
#
# PASS_MAX_DAYS Maximum number of days a password may be used.
# PASS_MIN_DAYS Minimum number of days allowed between password changes.
# PASS_WARN_AGE Number of days warning given before a password expires.
#
PASS_MAX_DAYS {{ pwd_max_age }}
PASS_MIN_DAYS {{ pwd_min_age }}
PASS_WARN_AGE 7
#
# Min/max values for automatic uid selection in useradd
#
UID_MIN {{ uid_min }}
UID_MAX 60000
# System accounts
SYS_UID_MIN {{ sys_uid_min }}
SYS_UID_MAX {{ sys_uid_max }}
# Min/max values for automatic gid selection in groupadd
GID_MIN {{ gid_min }}
GID_MAX 60000
# System accounts
SYS_GID_MIN {{ sys_gid_min }}
SYS_GID_MAX {{ sys_gid_max }}
#
# Max number of login retries if password is bad. This will most likely be
# overriden by PAM, since the default pam_unix module has it's own built
# in of 3 retries. However, this is a safe fallback in case you are using
# an authentication module that does not enforce PAM_MAXTRIES.
#
LOGIN_RETRIES {{ login_retries }}
#
# Max time in seconds for login
#
LOGIN_TIMEOUT {{ login_timeout }}
#
# Which fields may be changed by regular users using chfn - use
# any combination of letters "frwh" (full name, room number, work
# phone, home phone). If not defined, no changes are allowed.
# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
#
{% if chfn_restrict %}
CHFN_RESTRICT {{ chfn_restrict }}
{% endif %}
#
# Should login be allowed if we can't cd to the home directory?
# Default in no.
#
DEFAULT_HOME {% if allow_login_without_home %} yes {% else %} no {% endif %}
#
# If defined, this command is run when removing a user.
# It should remove any at/cron/print jobs etc. owned by
# the user to be removed (passed as the first argument).
#
#USERDEL_CMD /usr/sbin/userdel_local
#
# Enable setting of the umask group bits to be the same as owner bits
# (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is
# the same as gid, and username is the same as the primary group name.
#
# If set to yes, userdel will remove the user´s group if it contains no
# more members, and useradd will create by default a group with the name
# of the user.
#
USERGROUPS_ENAB yes
#
# Instead of the real user shell, the program specified by this parameter
# will be launched, although its visible name (argv[0]) will be the shell's.
# The program may do whatever it wants (logging, additional authentification,
# banner, ...) before running the actual shell.
#
# FAKE_SHELL /bin/fakeshell
#
# If defined, either full pathname of a file containing device names or
# a ":" delimited list of device names. Root logins will be allowed only
# upon these devices.
#
# This variable is used by login and su.
#
#CONSOLE /etc/consoles
#CONSOLE console:tty01:tty02:tty03:tty04
#
# List of groups to add to the user's supplementary group set
# when logging in on the console (as determined by the CONSOLE
# setting). Default is none.
#
# Use with caution - it is possible for users to gain permanent
# access to these groups, even when not logged in on the console.
# How to do it is left as an exercise for the reader...
#
# This variable is used by login and su.
#
#CONSOLE_GROUPS floppy:audio:cdrom
#
# If set to "yes", new passwords will be encrypted using the MD5-based
# algorithm compatible with the one used by recent releases of FreeBSD.
# It supports passwords of unlimited length and longer salt strings.
# Set to "no" if you need to copy encrypted passwords to other systems
# which don't understand the new algorithm. Default is "no".
#
# This variable is deprecated. You should use ENCRYPT_METHOD.
#
MD5_CRYPT_ENAB no
#
# If set to MD5 , MD5-based algorithm will be used for encrypting password
# If set to SHA256, SHA256-based algorithm will be used for encrypting password
# If set to SHA512, SHA512-based algorithm will be used for encrypting password
# If set to DES, DES-based algorithm will be used for encrypting password (default)
# Overrides the MD5_CRYPT_ENAB option
#
# Note: It is recommended to use a value consistent with
# the PAM modules configuration.
#
ENCRYPT_METHOD SHA512
#
# Only used if ENCRYPT_METHOD is set to SHA256 or SHA512.
#
# Define the number of SHA rounds.
# With a lot of rounds, it is more difficult to brute forcing the password.
# But note also that it more CPU resources will be needed to authenticate
# users.
#
# If not specified, the libc will choose the default number of rounds (5000).
# The values must be inside the 1000-999999999 range.
# If only one of the MIN or MAX values is set, then this value will be used.
# If MIN > MAX, the highest value will be used.
#
# SHA_CRYPT_MIN_ROUNDS 5000
# SHA_CRYPT_MAX_ROUNDS 5000
################# OBSOLETED BY PAM ##############
# #
# These options are now handled by PAM. Please #
# edit the appropriate file in /etc/pam.d/ to #
# enable the equivelants of them.
#
###############
#MOTD_FILE
#DIALUPS_CHECK_ENAB
#LASTLOG_ENAB
#MAIL_CHECK_ENAB
#OBSCURE_CHECKS_ENAB
#PORTTIME_CHECKS_ENAB
#SU_WHEEL_ONLY
#CRACKLIB_DICTPATH
#PASS_CHANGE_TRIES
#PASS_ALWAYS_WARN
#ENVIRON_FILE
#NOLOGINS_FILE
#ISSUE_FILE
#PASS_MIN_LEN
#PASS_MAX_LEN
#ULIMIT
#ENV_HZ
#CHFN_AUTH
#CHSH_AUTH
#FAIL_DELAY
################# OBSOLETED #######################
# #
# These options are no more handled by shadow. #
# #
# Shadow utilities will display a warning if they #
# still appear. #
# #
###################################################
# CLOSE_SESSIONS
# LOGIN_STRING
# NO_PASSWORD_CONSOLE
# QMAIL_DIR

117
hooks/charmhelpers/contrib/hardening/host/templates/modules Normal file
View File

@ -0,0 +1,117 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# Parameters can be specified after the module name.
# Arch
# ----
#
# Modules for certains builds, contains support modules and some CPU-specific optimizations.
{% if arch == "x86_64" -%}
# Optimize for x86_64 cryptographic features
twofish-x86_64-3way
twofish-x86_64
aes-x86_64
salsa20-x86_64
blowfish-x86_64
{% endif -%}
{% if cpuVendor == "intel" -%}
# Intel-specific optimizations
ghash-clmulni-intel
aesni-intel
kvm-intel
{% endif -%}
{% if cpuVendor == "amd" -%}
# AMD-specific optimizations
kvm-amd
{% endif -%}
kvm
# Crypto
# ------
# Some core modules which comprise strong cryptography.
blowfish_common
blowfish_generic
ctr
cts
lrw
lzo
rmd160
rmd256
rmd320
serpent
sha512_generic
twofish_common
twofish_generic
xts
zlib
# Drivers
# -------
# Basics
lp
rtc
loop
# Filesystems
ext2
btrfs
{% if desktop_enable -%}
# Desktop
psmouse
snd
snd_ac97_codec
snd_intel8x0
snd_page_alloc
snd_pcm
snd_timer
soundcore
usbhid
{% endif -%}
# Lib
# ---
xz
# Net
# ---
# All packets needed for netfilter rules (ie iptables, ebtables).
ip_tables
x_tables
iptable_filter
iptable_nat
# Targets
ipt_LOG
ipt_REJECT
# Modules
xt_connlimit
xt_tcpudp
xt_recent
xt_limit
xt_conntrack
nf_conntrack
nf_conntrack_ipv4
nf_defrag_ipv4
xt_state
nf_nat
# Addons
xt_pknock

11
hooks/charmhelpers/contrib/hardening/host/templates/passwdqc.conf Normal file
View File

@ -0,0 +1,11 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
Name: passwdqc password strength enforcement
Default: yes
Priority: 1024
Conflicts: cracklib
Password-Type: Primary
Password:
requisite pam_passwdqc.so {{ auth_pam_passwdqc_options }}

8
hooks/charmhelpers/contrib/hardening/host/templates/pinerolo_profile.sh Normal file
View File

@ -0,0 +1,8 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
# Disable core dumps via soft limits for all users. Compliance to this setting
# is voluntary and can be modified by users up to a hard limit. This setting is
# a sane default.
ulimit -S -c 0 > /dev/null 2>&1

11
hooks/charmhelpers/contrib/hardening/host/templates/securetty Normal file
View File

@ -0,0 +1,11 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
# A list of TTYs, from which root can log in
# see `man securetty` for reference
{% if ttys -%}
{% for tty in ttys -%}
{{ tty }}
{% endfor -%}
{% endif -%}

14
hooks/charmhelpers/contrib/hardening/host/templates/tally2 Normal file
View File

@ -0,0 +1,14 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
Name: tally2 lockout after failed attempts enforcement
Default: yes
Priority: 1024
Conflicts: cracklib
Auth-Type: Primary
Auth-Initial:
required pam_tally2.so deny={{ auth_retries }} onerr=fail unlock_time={{ auth_lockout_time }}
Account-Type: Primary
Account-Initial:
required pam_tally2.so

19
hooks/charmhelpers/contrib/hardening/mysql/__init__.py Normal file
View File

@ -0,0 +1,19 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from os import path
TEMPLATES_DIR = path.join(path.dirname(__file__), 'templates')

31
hooks/charmhelpers/contrib/hardening/mysql/checks/__init__.py Normal file
View File

@ -0,0 +1,31 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.core.hookenv import (
log,
DEBUG,
)
from charmhelpers.contrib.hardening.mysql.checks import config
def run_mysql_checks():
log("Starting MySQL hardening checks.", level=DEBUG)
checks = config.get_audits()
for check in checks:
log("Running '%s' check" % (check.__class__.__name__), level=DEBUG)
check.ensure_compliance()
log("MySQL hardening checks complete.", level=DEBUG)

89
hooks/charmhelpers/contrib/hardening/mysql/checks/config.py Normal file
View File

@ -0,0 +1,89 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import six
import subprocess
from charmhelpers.core.hookenv import (
log,
WARNING,
)
from charmhelpers.contrib.hardening.audits.file import (
FilePermissionAudit,
DirectoryPermissionAudit,
TemplatedFile,
)
from charmhelpers.contrib.hardening.mysql import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get MySQL hardening config audits.
:returns: dictionary of audits
"""
if subprocess.call(['which', 'mysql'], stdout=subprocess.PIPE) != 0:
log("MySQL does not appear to be installed on this node - "
"skipping mysql hardening", level=WARNING)
return []
settings = utils.get_settings('mysql')
hardening_settings = settings['hardening']
my_cnf = hardening_settings['mysql-conf']
audits = [
FilePermissionAudit(paths=[my_cnf], user='root',
group='root', mode=0o0600),
TemplatedFile(hardening_settings['hardening-conf'],
MySQLConfContext(),
TEMPLATES_DIR,
mode=0o0750,
user='mysql',
group='root',
service_actions=[{'service': 'mysql',
'actions': ['restart']}]),
# MySQL and Percona charms do not allow configuration of the
# data directory, so use the default.
DirectoryPermissionAudit('/var/lib/mysql',
user='mysql',
group='mysql',
recursive=False,
mode=0o755),
DirectoryPermissionAudit('/etc/mysql',
user='root',
group='root',
recursive=False,
mode=0o700),
]
return audits
class MySQLConfContext(object):
"""Defines the set of key/value pairs to set in a mysql config file.
This context, when called, will return a dictionary containing the
key/value pairs of setting to specify in the
/etc/mysql/conf.d/hardening.cnf file.
"""
def __call__(self):
settings = utils.get_settings('mysql')
# Translate for python3
return {'mysql_settings':
[(k, v) for k, v in six.iteritems(settings['security'])]}

0
hooks/charmhelpers/contrib/hardening/mysql/templates/__init__.py Normal file
View File

12
hooks/charmhelpers/contrib/hardening/mysql/templates/hardening.cnf Normal file
View File

@ -0,0 +1,12 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
[mysqld]
{% for setting, value in mysql_settings -%}
{% if value == 'True' -%}
{{ setting }}
{% elif value != 'None' and value != None -%}
{{ setting }} = {{ value }}
{% endif -%}
{% endfor -%}

19
hooks/charmhelpers/contrib/hardening/ssh/__init__.py Normal file
View File

@ -0,0 +1,19 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from os import path
TEMPLATES_DIR = path.join(path.dirname(__file__), 'templates')

31
hooks/charmhelpers/contrib/hardening/ssh/checks/__init__.py Normal file
View File

@ -0,0 +1,31 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
from charmhelpers.core.hookenv import (
log,
DEBUG,
)
from charmhelpers.contrib.hardening.ssh.checks import config
def run_ssh_checks():
log("Starting SSH hardening checks.", level=DEBUG)
checks = config.get_audits()
for check in checks:
log("Running '%s' check" % (check.__class__.__name__), level=DEBUG)
check.ensure_compliance()
log("SSH hardening checks complete.", level=DEBUG)

394
hooks/charmhelpers/contrib/hardening/ssh/checks/config.py Normal file
View File

@ -0,0 +1,394 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import os
from charmhelpers.core.hookenv import (
log,
DEBUG,
)
from charmhelpers.fetch import (
apt_install,
apt_update,
)
from charmhelpers.core.host import lsb_release
from charmhelpers.contrib.hardening.audits.file import (
TemplatedFile,
FileContentAudit,
)
from charmhelpers.contrib.hardening.ssh import TEMPLATES_DIR
from charmhelpers.contrib.hardening import utils
def get_audits():
"""Get SSH hardening config audits.
:returns: dictionary of audits
"""
audits = [SSHConfig(), SSHDConfig(), SSHConfigFileContentAudit(),
SSHDConfigFileContentAudit()]
return audits
class SSHConfigContext(object):
type = 'client'
def get_macs(self, allow_weak_mac):
if allow_weak_mac:
weak_macs = 'weak'
else:
weak_macs = 'default'
default = 'hmac-sha2-512,hmac-sha2-256,hmac-ripemd160'
macs = {'default': default,
'weak': default + ',hmac-sha1'}
default = ('hmac-sha2-512-etm@openssh.com,'
'hmac-sha2-256-etm@openssh.com,'
'hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,'
'hmac-sha2-512,hmac-sha2-256,hmac-ripemd160')
macs_66 = {'default': default,
'weak': default + ',hmac-sha1'}
# Use newer ciphers on Ubuntu Trusty and above
if lsb_release()['DISTRIB_CODENAME'].lower() >= 'trusty':
log("Detected Ubuntu 14.04 or newer, using new macs", level=DEBUG)
macs = macs_66
return macs[weak_macs]
def get_kexs(self, allow_weak_kex):
if allow_weak_kex:
weak_kex = 'weak'
else:
weak_kex = 'default'
default = 'diffie-hellman-group-exchange-sha256'
weak = (default + ',diffie-hellman-group14-sha1,'
'diffie-hellman-group-exchange-sha1,'
'diffie-hellman-group1-sha1')
kex = {'default': default,
'weak': weak}
default = ('curve25519-sha256@libssh.org,'
'diffie-hellman-group-exchange-sha256')
weak = (default + ',diffie-hellman-group14-sha1,'
'diffie-hellman-group-exchange-sha1,'
'diffie-hellman-group1-sha1')
kex_66 = {'default': default,
'weak': weak}
# Use newer kex on Ubuntu Trusty and above
if lsb_release()['DISTRIB_CODENAME'].lower() >= 'trusty':
log('Detected Ubuntu 14.04 or newer, using new key exchange '
'algorithms', level=DEBUG)
kex = kex_66
return kex[weak_kex]
def get_ciphers(self, cbc_required):
if cbc_required:
weak_ciphers = 'weak'
else:
weak_ciphers = 'default'
default = 'aes256-ctr,aes192-ctr,aes128-ctr'
cipher = {'default': default,
'weak': default + 'aes256-cbc,aes192-cbc,aes128-cbc'}
default = ('chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,'
'aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr')
ciphers_66 = {'default': default,
'weak': default + ',aes256-cbc,aes192-cbc,aes128-cbc'}
# Use newer ciphers on ubuntu Trusty and above
if lsb_release()['DISTRIB_CODENAME'].lower() >= 'trusty':
log('Detected Ubuntu 14.04 or newer, using new ciphers',
level=DEBUG)
cipher = ciphers_66
return cipher[weak_ciphers]
def __call__(self):
settings = utils.get_settings('ssh')
if settings['common']['network_ipv6_enable']:
addr_family = 'any'
else:
addr_family = 'inet'
ctxt = {
'addr_family': addr_family,
'remote_hosts': settings['common']['remote_hosts'],
'password_auth_allowed':
settings['client']['password_authentication'],
'ports': settings['common']['ports'],
'ciphers': self.get_ciphers(settings['client']['cbc_required']),
'macs': self.get_macs(settings['client']['weak_hmac']),
'kexs': self.get_kexs(settings['client']['weak_kex']),
'roaming': settings['client']['roaming'],
}
return ctxt
class SSHConfig(TemplatedFile):
def __init__(self):
path = '/etc/ssh/ssh_config'
super(SSHConfig, self).__init__(path=path,
template_dir=TEMPLATES_DIR,
context=SSHConfigContext(),
user='root',
group='root',
mode=0o0644)
def pre_write(self):
settings = utils.get_settings('ssh')
apt_update(fatal=True)
apt_install(settings['client']['package'])
if not os.path.exists('/etc/ssh'):
os.makedir('/etc/ssh')
# NOTE: don't recurse
utils.ensure_permissions('/etc/ssh', 'root', 'root', 0o0755,
maxdepth=0)
def post_write(self):
# NOTE: don't recurse
utils.ensure_permissions('/etc/ssh', 'root', 'root', 0o0755,
maxdepth=0)
class SSHDConfigContext(SSHConfigContext):
type = 'server'
def __call__(self):
settings = utils.get_settings('ssh')
if settings['common']['network_ipv6_enable']:
addr_family = 'any'
else:
addr_family = 'inet'
ctxt = {
'ssh_ip': settings['server']['listen_to'],
'password_auth_allowed':
settings['server']['password_authentication'],
'ports': settings['common']['ports'],
'addr_family': addr_family,
'ciphers': self.get_ciphers(settings['server']['cbc_required']),
'macs': self.get_macs(settings['server']['weak_hmac']),
'kexs': self.get_kexs(settings['server']['weak_kex']),
'host_key_files': settings['server']['host_key_files'],
'allow_root_with_key': settings['server']['allow_root_with_key'],
'password_authentication':
settings['server']['password_authentication'],
'use_priv_sep': settings['server']['use_privilege_separation'],
'use_pam': settings['server']['use_pam'],
'allow_x11_forwarding': settings['server']['allow_x11_forwarding'],
'print_motd': settings['server']['print_motd'],
'print_last_log': settings['server']['print_last_log'],
'client_alive_interval':
settings['server']['alive_interval'],
'client_alive_count': settings['server']['alive_count'],
'allow_tcp_forwarding': settings['server']['allow_tcp_forwarding'],
'allow_agent_forwarding':
settings['server']['allow_agent_forwarding'],
'deny_users': settings['server']['deny_users'],
'allow_users': settings['server']['allow_users'],
'deny_groups': settings['server']['deny_groups'],
'allow_groups': settings['server']['allow_groups'],
'use_dns': settings['server']['use_dns'],
'sftp_enable': settings['server']['sftp_enable'],
'sftp_group': settings['server']['sftp_group'],
'sftp_chroot': settings['server']['sftp_chroot'],
'max_auth_tries': settings['server']['max_auth_tries'],
'max_sessions': settings['server']['max_sessions'],
}
return ctxt
class SSHDConfig(TemplatedFile):
def __init__(self):
path = '/etc/ssh/sshd_config'
super(SSHDConfig, self).__init__(path=path,
template_dir=TEMPLATES_DIR,
context=SSHDConfigContext(),
user='root',
group='root',
mode=0o0600,
service_actions=[{'service': 'ssh',
'actions':
['restart']}])
def pre_write(self):
settings = utils.get_settings('ssh')
apt_update(fatal=True)
apt_install(settings['server']['package'])
if not os.path.exists('/etc/ssh'):
os.makedir('/etc/ssh')
# NOTE: don't recurse
utils.ensure_permissions('/etc/ssh', 'root', 'root', 0o0755,
maxdepth=0)
def post_write(self):
# NOTE: don't recurse
utils.ensure_permissions('/etc/ssh', 'root', 'root', 0o0755,
maxdepth=0)
class SSHConfigFileContentAudit(FileContentAudit):
def __init__(self):
self.path = '/etc/ssh/ssh_config'
super(SSHConfigFileContentAudit, self).__init__(self.path, {})
def is_compliant(self, *args, **kwargs):
self.pass_cases = []
self.fail_cases = []
settings = utils.get_settings('ssh')
if lsb_release()['DISTRIB_CODENAME'].lower() >= 'trusty':
if not settings['server']['weak_hmac']:
self.pass_cases.append(r'^MACs.+,hmac-ripemd160$')
else:
self.pass_cases.append(r'^MACs.+,hmac-sha1$')
if settings['server']['weak_kex']:
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
else:
self.pass_cases.append(r'^KexAlgorithms.+,diffie-hellman-group-exchange-sha256$') # noqa
self.fail_cases.append(r'^KexAlgorithms.*diffie-hellman-group14-sha1[,\s]?') # noqa
if settings['server']['cbc_required']:
self.pass_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
self.fail_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.pass_cases.append(r'^Ciphers\schacha20-poly1305@openssh.com,.+') # noqa
self.pass_cases.append(r'^Ciphers\s.*aes128-ctr$')
self.pass_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
if not settings['client']['weak_hmac']:
self.fail_cases.append(r'^MACs.+,hmac-sha1$')
else:
self.pass_cases.append(r'^MACs.+,hmac-sha1$')
if settings['client']['weak_kex']:
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
else:
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256$') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
if settings['client']['cbc_required']:
self.pass_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
self.fail_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
if settings['client']['roaming']:
self.pass_cases.append(r'^UseRoaming yes$')
else:
self.fail_cases.append(r'^UseRoaming yes$')
return super(SSHConfigFileContentAudit, self).is_compliant(*args,
**kwargs)
class SSHDConfigFileContentAudit(FileContentAudit):
def __init__(self):
self.path = '/etc/ssh/sshd_config'
super(SSHDConfigFileContentAudit, self).__init__(self.path, {})
def is_compliant(self, *args, **kwargs):
self.pass_cases = []
self.fail_cases = []
settings = utils.get_settings('ssh')
if lsb_release()['DISTRIB_CODENAME'].lower() >= 'trusty':
if not settings['server']['weak_hmac']:
self.pass_cases.append(r'^MACs.+,hmac-ripemd160$')
else:
self.pass_cases.append(r'^MACs.+,hmac-sha1$')
if settings['server']['weak_kex']:
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
else:
self.pass_cases.append(r'^KexAlgorithms.+,diffie-hellman-group-exchange-sha256$') # noqa
self.fail_cases.append(r'^KexAlgorithms.*diffie-hellman-group14-sha1[,\s]?') # noqa
if settings['server']['cbc_required']:
self.pass_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
self.fail_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.pass_cases.append(r'^Ciphers\schacha20-poly1305@openssh.com,.+') # noqa
self.pass_cases.append(r'^Ciphers\s.*aes128-ctr$')
self.pass_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
if not settings['server']['weak_hmac']:
self.pass_cases.append(r'^MACs.+,hmac-ripemd160$')
else:
self.pass_cases.append(r'^MACs.+,hmac-sha1$')
if settings['server']['weak_kex']:
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
else:
self.pass_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha256$') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group14-sha1[,\s]?') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group-exchange-sha1[,\s]?') # noqa
self.fail_cases.append(r'^KexAlgorithms\sdiffie-hellman-group1-sha1[,\s]?') # noqa
if settings['server']['cbc_required']:
self.pass_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.fail_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
else:
self.fail_cases.append(r'^Ciphers\s.*-cbc[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes128-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes192-ctr[,\s]?')
self.pass_cases.append(r'^Ciphers\s.*aes256-ctr[,\s]?')
if settings['server']['sftp_enable']:
self.pass_cases.append(r'^Subsystem\ssftp')
else:
self.fail_cases.append(r'^Subsystem\ssftp')
return super(SSHDConfigFileContentAudit, self).is_compliant(*args,
**kwargs)

0
hooks/charmhelpers/contrib/hardening/ssh/templates/__init__.py Normal file
View File

70
hooks/charmhelpers/contrib/hardening/ssh/templates/ssh_config Normal file
View File

@ -0,0 +1,70 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
# This is the ssh client system-wide configuration file. See
# ssh_config(5) for more information. This file provides defaults for
# users, and the values can be changed in per-user configuration files
# or on the command line.
# Configuration data is parsed as follows:
# 1. command line options
# 2. user-specific file
# 3. system-wide file
# Any configuration value is only changed the first time it is set.
# Thus, host-specific definitions should be at the beginning of the
# configuration file, and defaults at the end.
# Site-wide defaults for some commonly used options. For a comprehensive
# list of available options, their meanings and defaults, please see the
# ssh_config(5) man page.
# Restrict the following configuration to be limited to this Host.
{% if remote_hosts -%}
Host {{ ' '.join(remote_hosts) }}
{% endif %}
ForwardAgent no
ForwardX11 no
ForwardX11Trusted yes
RhostsRSAAuthentication no
RSAAuthentication yes
PasswordAuthentication {{ password_auth_allowed }}
HostbasedAuthentication no
GSSAPIAuthentication no
GSSAPIDelegateCredentials no
GSSAPIKeyExchange no
GSSAPITrustDNS no
BatchMode no
CheckHostIP yes
AddressFamily {{ addr_family }}
ConnectTimeout 0
StrictHostKeyChecking ask
IdentityFile ~/.ssh/identity
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/id_dsa
# The port at the destination should be defined
{% for port in ports -%}
Port {{ port }}
{% endfor %}
Protocol 2
Cipher 3des
{% if ciphers -%}
Ciphers {{ ciphers }}
{%- endif %}
{% if macs -%}
MACs {{ macs }}
{%- endif %}
{% if kexs -%}
KexAlgorithms {{ kexs }}
{%- endif %}
EscapeChar ~
Tunnel no
TunnelDevice any:any
PermitLocalCommand no
VisualHostKey no
RekeyLimit 1G 1h
SendEnv LANG LC_*
HashKnownHosts yes
{% if roaming -%}
UseRoaming {{ roaming }}
{% endif %}

159
hooks/charmhelpers/contrib/hardening/ssh/templates/sshd_config Normal file
View File

@ -0,0 +1,159 @@
###############################################################################
# WARNING: This configuration file is maintained by Juju. Local changes may
# be overwritten.
###############################################################################
# Package generated configuration file
# See the sshd_config(5) manpage for details
# What ports, IPs and protocols we listen for
{% for port in ports -%}
Port {{ port }}
{% endfor -%}
AddressFamily {{ addr_family }}
# Use these options to restrict which interfaces/protocols sshd will bind to
{% if ssh_ip -%}
{% for ip in ssh_ip -%}
ListenAddress {{ ip }}
{% endfor %}
{%- else -%}
ListenAddress ::
ListenAddress 0.0.0.0
{% endif -%}
Protocol 2
{% if ciphers -%}
Ciphers {{ ciphers }}
{% endif -%}
{% if macs -%}
MACs {{ macs }}
{% endif -%}
{% if kexs -%}
KexAlgorithms {{ kexs }}
{% endif -%}
# HostKeys for protocol version 2
{% for keyfile in host_key_files -%}
HostKey {{ keyfile }}
{% endfor -%}
# Privilege Separation is turned on for security
{% if use_priv_sep -%}
UsePrivilegeSeparation {{ use_priv_sep }}
{% endif -%}
# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 1024
# Logging
SyslogFacility AUTH
LogLevel VERBOSE
# Authentication:
LoginGraceTime 30s
{% if allow_root_with_key -%}
PermitRootLogin without-password
{% else -%}
PermitRootLogin no
{% endif %}
PermitTunnel no
PermitUserEnvironment no
StrictModes yes
RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile %h/.ssh/authorized_keys
# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
IgnoreUserKnownHosts yes
# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no
# Change to no to disable tunnelled clear text passwords
PasswordAuthentication {{ password_authentication }}
# Kerberos options
KerberosAuthentication no
KerberosGetAFSToken no
KerberosOrLocalPasswd no
KerberosTicketCleanup yes
# GSSAPI options
GSSAPIAuthentication no
GSSAPICleanupCredentials yes
X11Forwarding {{ allow_x11_forwarding }}
X11DisplayOffset 10
X11UseLocalhost yes
GatewayPorts no
PrintMotd {{ print_motd }}
PrintLastLog {{ print_last_log }}
TCPKeepAlive no
UseLogin no
ClientAliveInterval {{ client_alive_interval }}
ClientAliveCountMax {{ client_alive_count }}
AllowTcpForwarding {{ allow_tcp_forwarding }}
AllowAgentForwarding {{ allow_agent_forwarding }}
MaxStartups 10:30:100
#Banner /etc/issue.net
# Allow client to pass locale environment variables
AcceptEnv LANG LC_*
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication. Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM {{ use_pam }}
{% if deny_users -%}
DenyUsers {{ deny_users }}
{% endif -%}
{% if allow_users -%}
AllowUsers {{ allow_users }}
{% endif -%}
{% if deny_groups -%}
DenyGroups {{ deny_groups }}
{% endif -%}
{% if allow_groups -%}
AllowGroups allow_groups
{% endif -%}
UseDNS {{ use_dns }}
MaxAuthTries {{ max_auth_tries }}
MaxSessions {{ max_sessions }}
{% if sftp_enable -%}
# Configuration, in case SFTP is used
## override default of no subsystems
## Subsystem sftp /opt/app/openssh5/libexec/sftp-server
Subsystem sftp internal-sftp -l VERBOSE
## These lines must appear at the *end* of sshd_config
Match Group {{ sftp_group }}
ForceCommand internal-sftp -l VERBOSE
ChrootDirectory {{ sftp_chroot }}
{% else -%}
# Configuration, in case SFTP is used
## override default of no subsystems
## Subsystem sftp /opt/app/openssh5/libexec/sftp-server
## These lines must appear at the *end* of sshd_config
Match Group sftponly
ForceCommand internal-sftp -l VERBOSE
ChrootDirectory /sftpchroot/home/%u
{% endif %}

71
hooks/charmhelpers/contrib/hardening/templating.py Normal file
View File

@ -0,0 +1,71 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import os
from charmhelpers.core.hookenv import (
log,
DEBUG,
WARNING,
)
try:
from jinja2 import FileSystemLoader, Environment
except ImportError:
from charmhelpers.fetch import apt_install
from charmhelpers.fetch import apt_update
apt_update(fatal=True)
apt_install('python-jinja2', fatal=True)
from jinja2 import FileSystemLoader, Environment
# NOTE: function separated from main rendering code to facilitate easier
# mocking in unit tests.
def write(path, data):
with open(path, 'wb') as out:
out.write(data)
def get_template_path(template_dir, path):
"""Returns the template file which would be used to render the path.
The path to the template file is returned.
:param template_dir: the directory the templates are located in
:param path: the file path to be written to.
:returns: path to the template file
"""
return os.path.join(template_dir, os.path.basename(path))
def render_and_write(template_dir, path, context):
"""Renders the specified template into the file.
:param template_dir: the directory to load the template from
:param path: the path to write the templated contents to
:param context: the parameters to pass to the rendering engine
"""
env = Environment(loader=FileSystemLoader(template_dir))
template_file = os.path.basename(path)
template = env.get_template(template_file)
log('Rendering from template: %s' % template.name, level=DEBUG)
rendered_content = template.render(context)
if not rendered_content:
log("Render returned None - skipping '%s'" % path,
level=WARNING)
return
write(path, rendered_content.encode('utf-8').strip())
log('Wrote template %s' % path, level=DEBUG)

157
hooks/charmhelpers/contrib/hardening/utils.py Normal file
View File

@ -0,0 +1,157 @@
# Copyright 2016 Canonical Limited.
#
# This file is part of charm-helpers.
#
# charm-helpers is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3 as
# published by the Free Software Foundation.
#
# charm-helpers 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
import glob
import grp
import os
import pwd
import six
import yaml
from charmhelpers.core.hookenv import (
log,
DEBUG,
INFO,
WARNING,
ERROR,
)
# Global settings cache. Since each hook fire entails a fresh module import it
# is safe to hold this in memory and not risk missing config changes (since
# they will result in a new hook fire and thus re-import).
__SETTINGS__ = {}
def _get_defaults(modules):
"""Load the default config for the provided modules.
:param modules: stack modules config defaults to lookup.
:returns: modules default config dictionary.
"""
default = os.path.join(os.path.dirname(__file__),
'defaults/%s.yaml' % (modules))
return yaml.safe_load(open(default))
def _get_schema(modules):
"""Load the config schema for the provided modules.
NOTE: this schema is intended to have 1-1 relationship with they keys in
the default config and is used a means to verify valid overrides provided
by the user.
:param modules: stack modules config schema to lookup.
:returns: modules default schema dictionary.
"""
schema = os.path.join(os.path.dirname(__file__),
'defaults/%s.yaml.schema' % (modules))
return yaml.safe_load(open(schema))
def _get_user_provided_overrides(modules):
"""Load user-provided config overrides.
:param modules: stack modules to lookup in user overrides yaml file.
:returns: overrides dictionary.
"""
overrides = os.path.join(os.environ['JUJU_CHARM_DIR'],
'hardening.yaml')
if os.path.exists(overrides):
log("Found user-provided config overrides file '%s'" %
(overrides), level=DEBUG)
settings = yaml.safe_load(open(overrides))
if settings and settings.get(modules):
log("Applying '%s' overrides" % (modules), level=DEBUG)
return settings.get(modules)
log("No overrides found for '%s'" % (modules), level=DEBUG)
else:
log("No hardening config overrides file '%s' found in charm "
"root dir" % (overrides), level=DEBUG)
return {}
def _apply_overrides(settings, overrides, schema):
"""Get overrides config overlayed onto modules defaults.
:param modules: require stack modules config.
:returns: dictionary of modules config with user overrides applied.
"""
if overrides:
for k, v in six.iteritems(overrides):
if k in schema:
if schema[k] is None:
settings[k] = v
elif type(schema[k]) is dict:
settings[k] = _apply_overrides(settings[k], overrides[k],
schema[k])
else:
raise Exception("Unexpected type found in schema '%s'" %
type(schema[k]), level=ERROR)
else:
log("Unknown override key '%s' - ignoring" % (k), level=INFO)
return settings
def get_settings(modules):
global __SETTINGS__
if modules in __SETTINGS__:
return __SETTINGS__[modules]
schema = _get_schema(modules)
settings = _get_defaults(modules)
overrides = _get_user_provided_overrides(modules)
__SETTINGS__[modules] = _apply_overrides(settings, overrides, schema)
return __SETTINGS__[modules]
def ensure_permissions(path, user, group, permissions, maxdepth=-1):
"""Ensure permissions for path.
If path is a file, apply to file and return. If path is a directory,
apply recursively (if required) to directory contents and return.
:param user: user name
:param group: group name
:param permissions: octal permissions
:param maxdepth: maximum recursion depth. A negative maxdepth allows
infinite recursion and maxdepth=0 means no recursion.
:returns: None
"""
if not os.path.exists(path):
log("File '%s' does not exist - cannot set permissions" % (path),
level=WARNING)
return
_user = pwd.getpwnam(user)
os.chown(path, _user.pw_uid, grp.getgrnam(group).gr_gid)
os.chmod(path, permissions)
if maxdepth == 0:
log("Max recursion depth reached - skipping further recursion",
level=DEBUG)
return
elif maxdepth > 0:
maxdepth -= 1
if os.path.isdir(path):
contents = glob.glob("%s/*" % (path))
for c in contents:
ensure_permissions(c, user=user, group=group,
permissions=permissions, maxdepth=maxdepth)

53
hooks/charmhelpers/contrib/openstack/amulet/utils.py
View File

@ -27,7 +27,11 @@ import cinderclient.v1.client as cinder_client
import glanceclient.v1.client as glance_client
import heatclient.v1.client as heat_client
import keystoneclient.v2_0 as keystone_client
import novaclient.v1_1.client as nova_client
from keystoneclient.auth.identity import v3 as keystone_id_v3
from keystoneclient import session as keystone_session
from keystoneclient.v3 import client as keystone_client_v3
import novaclient.client as nova_client
import pika
import swiftclient
@ -38,6 +42,8 @@ from charmhelpers.contrib.amulet.utils import (
DEBUG = logging.DEBUG
ERROR = logging.ERROR
NOVA_CLIENT_VERSION = "2"
class OpenStackAmuletUtils(AmuletUtils):
"""OpenStack amulet utilities.
@ -139,7 +145,7 @@ class OpenStackAmuletUtils(AmuletUtils):
return "role {} does not exist".format(e['name'])
return ret
def validate_user_data(self, expected, actual):
def validate_user_data(self, expected, actual, api_version=None):
"""Validate user data.
Validate a list of actual user data vs a list of expected user
@ -150,10 +156,15 @@ class OpenStackAmuletUtils(AmuletUtils):
for e in expected:
found = False
for act in actual:
a = {'enabled': act.enabled, 'name': act.name,
'email': act.email, 'tenantId': act.tenantId,
'id': act.id}
if e['name'] == a['name']:
if e['name'] == act.name:
a = {'enabled': act.enabled, 'name': act.name,
'email': act.email, 'id': act.id}
if api_version == 3:
a['default_project_id'] = getattr(act,
'default_project_id',
'none')
else:
a['tenantId'] = act.tenantId
found = True
ret = self._validate_dict_data(e, a)
if ret:
@ -188,15 +199,30 @@ class OpenStackAmuletUtils(AmuletUtils):
return cinder_client.Client(username, password, tenant, ept)
def authenticate_keystone_admin(self, keystone_sentry, user, password,
tenant):
tenant=None, api_version=None,
keystone_ip=None):
"""Authenticates admin user with the keystone admin endpoint."""
self.log.debug('Authenticating keystone admin...')
unit = keystone_sentry
service_ip = unit.relation('shared-db',
'mysql:shared-db')['private-address']
ep = "http://{}:35357/v2.0".format(service_ip.strip().decode('utf-8'))
return keystone_client.Client(username=user, password=password,
tenant_name=tenant, auth_url=ep)
if not keystone_ip:
keystone_ip = unit.relation('shared-db',
'mysql:shared-db')['private-address']
base_ep = "http://{}:35357".format(keystone_ip.strip().decode('utf-8'))
if not api_version or api_version == 2:
ep = base_ep + "/v2.0"
return keystone_client.Client(username=user, password=password,
tenant_name=tenant, auth_url=ep)
else:
ep = base_ep + "/v3"
auth = keystone_id_v3.Password(
user_domain_name='admin_domain',
username=user,
password=password,
domain_name='admin_domain',
auth_url=ep,
)
sess = keystone_session.Session(auth=auth)
return keystone_client_v3.Client(session=sess)
def authenticate_keystone_user(self, keystone, user, password, tenant):
"""Authenticates a regular user with the keystone public endpoint."""
@ -225,7 +251,8 @@ class OpenStackAmuletUtils(AmuletUtils):
self.log.debug('Authenticating nova user ({})...'.format(user))
ep = keystone.service_catalog.url_for(service_type='identity',
endpoint_type='publicURL')
return nova_client.Client(username=user, api_key=password,
return nova_client.Client(NOVA_CLIENT_VERSION,
username=user, api_key=password,
project_id=tenant, auth_url=ep)
def authenticate_swift_user(self, keystone, user, password, tenant):

18
hooks/charmhelpers/contrib/openstack/templates/section-keystone-authtoken
View File

@ -1,20 +1,12 @@
{% if auth_host -%}
{% if api_version == '3' -%}
[keystone_authtoken]
auth_url = {{ service_protocol }}://{{ service_host }}:{{ service_port }}
auth_uri = {{ service_protocol }}://{{ service_host }}:{{ service_port }}
auth_url = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}
auth_plugin = password
project_domain_id = default
user_domain_id = default
project_name = {{ admin_tenant_name }}
username = {{ admin_user }}
password = {{ admin_password }}
project_domain_name = default
user_domain_name = default
auth_plugin = password
{% else -%}
[keystone_authtoken]
identity_uri = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}/{{ auth_admin_prefix }}
auth_uri = {{ service_protocol }}://{{ service_host }}:{{ service_port }}/{{ service_admin_prefix }}
admin_tenant_name = {{ admin_tenant_name }}
admin_user = {{ admin_user }}
admin_password = {{ admin_password }}
signing_dir = {{ signing_dir }}
{% endif -%}
{% endif -%}

10
hooks/charmhelpers/contrib/openstack/templates/section-keystone-authtoken-legacy Normal file
View File

@ -0,0 +1,10 @@
{% if auth_host -%}
[keystone_authtoken]
# Juno specific config (Bug #1557223)
auth_uri = {{ service_protocol }}://{{ service_host }}:{{ service_port }}/{{ service_admin_prefix }}
identity_uri = {{ auth_protocol }}://{{ auth_host }}:{{ auth_port }}
admin_tenant_name = {{ admin_tenant_name }}
admin_user = {{ admin_user }}
admin_password = {{ admin_password }}
signing_dir = {{ signing_dir }}
{% endif -%}

661
hooks/charmhelpers/contrib/openstack/utils.py
View File

@ -24,6 +24,7 @@ import os
import sys
import re
import itertools
import functools
import six
import tempfile
@ -69,7 +70,15 @@ from charmhelpers.contrib.python.packages import (
pip_install,
)
from charmhelpers.core.host import lsb_release, mounts, umount, service_running
from charmhelpers.core.host import (
lsb_release,
mounts,
umount,
service_running,
service_pause,
service_resume,
restart_on_change_helper,
)
from charmhelpers.fetch import apt_install, apt_cache, install_remote
from charmhelpers.contrib.storage.linux.utils import is_block_device, zap_disk
from charmhelpers.contrib.storage.linux.loopback import ensure_loopback_device
@ -128,7 +137,7 @@ SWIFT_CODENAMES = OrderedDict([
('liberty',
['2.3.0', '2.4.0', '2.5.0']),
('mitaka',
['2.5.0']),
['2.5.0', '2.6.0']),
])
# >= Liberty version->codename mapping
@ -763,7 +772,8 @@ def _git_clone_and_install_single(repo, branch, depth, parent_dir, http_proxy,
os.mkdir(parent_dir)
juju_log('Cloning git repo: {}, branch: {}'.format(repo, branch))
repo_dir = install_remote(repo, dest=parent_dir, branch=branch, depth=depth)
repo_dir = install_remote(
repo, dest=parent_dir, branch=branch, depth=depth)
venv = os.path.join(parent_dir, 'venv')
@ -862,66 +872,155 @@ def os_workload_status(configs, required_interfaces, charm_func=None):
return wrap
def set_os_workload_status(configs, required_interfaces, charm_func=None, services=None, ports=None):
"""
Set workload status based on complete contexts.
status-set missing or incomplete contexts
and juju-log details of missing required data.
charm_func is a charm specific function to run checking
for charm specific requirements such as a VIP setting.
def set_os_workload_status(configs, required_interfaces, charm_func=None,
services=None, ports=None):
"""Set the state of the workload status for the charm.
This function also checks for whether the services defined are ACTUALLY
running and that the ports they advertise are open and being listened to.
This calls _determine_os_workload_status() to get the new state, message
and sets the status using status_set()
@param services - OPTIONAL: a [{'service': <string>, 'ports': [<int>]]
The ports are optional.
If services is a [<string>] then ports are ignored.
@param ports - OPTIONAL: an [<int>] representing ports that shoudl be
open.
@returns None
@param configs: a templating.OSConfigRenderer() object
@param required_interfaces: {generic: [specific, specific2, ...]}
@param charm_func: a callable function that returns state, message. The
signature is charm_func(configs) -> (state, message)
@param services: list of strings OR dictionary specifying services/ports
@param ports: OPTIONAL list of port numbers.
@returns state, message: the new workload status, user message
"""
incomplete_rel_data = incomplete_relation_data(configs, required_interfaces)
state = 'active'
missing_relations = []
incomplete_relations = []
state, message = _determine_os_workload_status(
configs, required_interfaces, charm_func, services, ports)
status_set(state, message)
def _determine_os_workload_status(
configs, required_interfaces, charm_func=None,
services=None, ports=None):
"""Determine the state of the workload status for the charm.
This function returns the new workload status for the charm based
on the state of the interfaces, the paused state and whether the
services are actually running and any specified ports are open.
This checks:
1. if the unit should be paused, that it is actually paused. If so the
state is 'maintenance' + message, else 'broken'.
2. that the interfaces/relations are complete. If they are not then
it sets the state to either 'broken' or 'waiting' and an appropriate
message.
3. If all the relation data is set, then it checks that the actual
services really are running. If not it sets the state to 'broken'.
If everything is okay then the state returns 'active'.
@param configs: a templating.OSConfigRenderer() object
@param required_interfaces: {generic: [specific, specific2, ...]}
@param charm_func: a callable function that returns state, message. The
signature is charm_func(configs) -> (state, message)
@param services: list of strings OR dictionary specifying services/ports
@param ports: OPTIONAL list of port numbers.
@returns state, message: the new workload status, user message
"""
state, message = _ows_check_if_paused(services, ports)
if state is None:
state, message = _ows_check_generic_interfaces(
configs, required_interfaces)
if state != 'maintenance' and charm_func:
# _ows_check_charm_func() may modify the state, message
state, message = _ows_check_charm_func(
state, message, lambda: charm_func(configs))
if state is None:
state, message = _ows_check_services_running(services, ports)
if state is None:
state = 'active'
message = "Unit is ready"
juju_log(message, 'INFO')
return state, message
def _ows_check_if_paused(services=None, ports=None):
"""Check if the unit is supposed to be paused, and if so check that the
services/ports (if passed) are actually stopped/not being listened to.
if the unit isn't supposed to be paused, just return None, None
@param services: OPTIONAL services spec or list of service names.
@param ports: OPTIONAL list of port numbers.
@returns state, message or None, None
"""
if is_unit_paused_set():
state, message = check_actually_paused(services=services,
ports=ports)
if state is None:
# we're paused okay, so set maintenance and return
state = "maintenance"
message = "Paused. Use 'resume' action to resume normal service."
return state, message
return None, None
def _ows_check_generic_interfaces(configs, required_interfaces):
"""Check the complete contexts to determine the workload status.
- Checks for missing or incomplete contexts
- juju log details of missing required data.
- determines the correct workload status
- creates an appropriate message for status_set(...)
if there are no problems then the function returns None, None
@param configs: a templating.OSConfigRenderer() object
@params required_interfaces: {generic_interface: [specific_interface], }
@returns state, message or None, None
"""
incomplete_rel_data = incomplete_relation_data(configs,
required_interfaces)
state = None
message = None
charm_state = None
charm_message = None
missing_relations = set()
incomplete_relations = set()
for generic_interface in incomplete_rel_data.keys():
for generic_interface, relations_states in incomplete_rel_data.items():
related_interface = None
missing_data = {}
# Related or not?
for interface in incomplete_rel_data[generic_interface]:
if incomplete_rel_data[generic_interface][interface].get('related'):
for interface, relation_state in relations_states.items():
if relation_state.get('related'):
related_interface = interface
missing_data = incomplete_rel_data[generic_interface][interface].get('missing_data')
# No relation ID for the generic_interface
missing_data = relation_state.get('missing_data')
break
# No relation ID for the generic_interface?
if not related_interface:
juju_log("{} relation is missing and must be related for "
"functionality. ".format(generic_interface), 'WARN')
state = 'blocked'
if generic_interface not in missing_relations:
missing_relations.append(generic_interface)
missing_relations.add(generic_interface)
else:
# Relation ID exists but no related unit
# Relation ID eists but no related unit
if not missing_data:
# Edge case relation ID exists but departing
if ('departed' in hook_name() or 'broken' in hook_name()) \
and related_interface in hook_name():
# Edge case - relation ID exists but departings
_hook_name = hook_name()
if (('departed' in _hook_name or 'broken' in _hook_name) and
related_interface in _hook_name):
state = 'blocked'
if generic_interface not in missing_relations:
missing_relations.append(generic_interface)
missing_relations.add(generic_interface)
juju_log("{} relation's interface, {}, "
"relationship is departed or broken "
"and is required for functionality."
"".format(generic_interface, related_interface), "WARN")
"".format(generic_interface, related_interface),
"WARN")
# Normal case relation ID exists but no related unit
# (joining)
else:
juju_log("{} relations's interface, {}, is related but has "
"no units in the relation."
"".format(generic_interface, related_interface), "INFO")
juju_log("{} relations's interface, {}, is related but has"
" no units in the relation."
"".format(generic_interface, related_interface),
"INFO")
# Related unit exists and data missing on the relation
else:
juju_log("{} relation's interface, {}, is related awaiting "
@ -930,9 +1029,8 @@ def set_os_workload_status(configs, required_interfaces, charm_func=None, servic
", ".join(missing_data)), "INFO")
if state != 'blocked':
state = 'waiting'
if generic_interface not in incomplete_relations \
and generic_interface not in missing_relations:
incomplete_relations.append(generic_interface)
if generic_interface not in missing_relations:
incomplete_relations.add(generic_interface)
if missing_relations:
message = "Missing relations: {}".format(", ".join(missing_relations))
@ -945,9 +1043,22 @@ def set_os_workload_status(configs, required_interfaces, charm_func=None, servic
"".format(", ".join(incomplete_relations))
state = 'waiting'
# Run charm specific checks
if charm_func:
charm_state, charm_message = charm_func(configs)
return state, message
def _ows_check_charm_func(state, message, charm_func_with_configs):
"""Run a custom check function for the charm to see if it wants to
change the state. This is only run if not in 'maintenance' and
tests to see if the new state is more important that the previous
one determined by the interfaces/relations check.
@param state: the previously determined state so far.
@param message: the user orientated message so far.
@param charm_func: a callable function that returns state, message
@returns state, message strings.
"""
if charm_func_with_configs:
charm_state, charm_message = charm_func_with_configs()
if charm_state != 'active' and charm_state != 'unknown':
state = workload_state_compare(state, charm_state)
if message:
@ -956,72 +1067,151 @@ def set_os_workload_status(configs, required_interfaces, charm_func=None, servic
message = "{}, {}".format(message, charm_message)
else:
message = charm_message
return state, message
# If the charm thinks the unit is active, check that the actual services
# really are active.
if services is not None and state == 'active':
# if we're passed the dict() then just grab the values as a list.
if isinstance(services, dict):
services = services.values()
# either extract the list of services from the dictionary, or if
# it is a simple string, use that. i.e. works with mixed lists.
_s = []
for s in services:
if isinstance(s, dict) and 'service' in s:
_s.append(s['service'])
if isinstance(s, str):
_s.append(s)
services_running = [service_running(s) for s in _s]
if not all(services_running):
not_running = [s for s, running in zip(_s, services_running)
if not running]
message = ("Services not running that should be: {}"
.format(", ".join(not_running)))
def _ows_check_services_running(services, ports):
"""Check that the services that should be running are actually running
and that any ports specified are being listened to.
@param services: list of strings OR dictionary specifying services/ports
@param ports: list of ports
@returns state, message: strings or None, None
"""
messages = []
state = None
if services is not None:
services = _extract_services_list_helper(services)
services_running, running = _check_running_services(services)
if not all(running):
messages.append(
"Services not running that should be: {}"
.format(", ".join(_filter_tuples(services_running, False))))
state = 'blocked'
# also verify that the ports that should be open are open
# NB, that ServiceManager objects only OPTIONALLY have ports
port_map = OrderedDict([(s['service'], s['ports'])
for s in services if 'ports' in s])
if state == 'active' and port_map:
all_ports = list(itertools.chain(*port_map.values()))
ports_open = [port_has_listener('0.0.0.0', p)
for p in all_ports]
if not all(ports_open):
not_opened = [p for p, opened in zip(all_ports, ports_open)
if not opened]
map_not_open = OrderedDict()
for service, ports in port_map.items():
closed_ports = set(ports).intersection(not_opened)
if closed_ports:
map_not_open[service] = closed_ports
# find which service has missing ports. They are in service
# order which makes it a bit easier.
message = (
"Services with ports not open that should be: {}"
.format(
", ".join([
"{}: [{}]".format(
service,
", ".join([str(v) for v in ports]))
for service, ports in map_not_open.items()])))
state = 'blocked'
if ports is not None and state == 'active':
# and we can also check ports which we don't know the service for
ports_open = [port_has_listener('0.0.0.0', p) for p in ports]
map_not_open, ports_open = (
_check_listening_on_services_ports(services))
if not all(ports_open):
message = (
# find which service has missing ports. They are in service
# order which makes it a bit easier.
message_parts = {service: ", ".join([str(v) for v in open_ports])
for service, open_ports in map_not_open.items()}
message = ", ".join(
["{}: [{}]".format(s, sp) for s, sp in message_parts.items()])
messages.append(
"Services with ports not open that should be: {}"
.format(message))
state = 'blocked'
if ports is not None:
# and we can also check ports which we don't know the service for
ports_open, ports_open_bools = _check_listening_on_ports_list(ports)
if not all(ports_open_bools):
messages.append(
"Ports which should be open, but are not: {}"
.format(", ".join([str(p) for p, v in zip(ports, ports_open)
.format(", ".join([str(p) for p, v in ports_open
if not v])))
state = 'blocked'
# Set to active if all requirements have been met
if state == 'active':
message = "Unit is ready"
juju_log(message, "INFO")
if state is not None:
message = "; ".join(messages)
return state, message
status_set(state, message)
return None, None
def _extract_services_list_helper(services):
"""Extract a OrderedDict of {service: [ports]} of the supplied services
for use by the other functions.
The services object can either be:
- None : no services were passed (an empty dict is returned)
- a list of strings
- A dictionary (optionally OrderedDict) {service_name: {'service': ..}}
- An array of [{'service': service_name, ...}, ...]
@param services: see above
@returns OrderedDict(service: [ports], ...)
"""
if services is None:
return {}
if isinstance(services, dict):
services = services.values()
# either extract the list of services from the dictionary, or if
# it is a simple string, use that. i.e. works with mixed lists.
_s = OrderedDict()
for s in services:
if isinstance(s, dict) and 'service' in s:
_s[s['service']] = s.get('ports', [])
if isinstance(s, str):
_s[s] = []
return _s
def _check_running_services(services):
"""Check that the services dict provided is actually running and provide
a list of (service, boolean) tuples for each service.
Returns both a zipped list of (service, boolean) and a list of booleans
in the same order as the services.
@param services: OrderedDict of strings: [ports], one for each service to
check.
@returns [(service, boolean), ...], : results for checks
[boolean] : just the result of the service checks
"""
services_running = [service_running(s) for s in services]
return list(zip(services, services_running)), services_running
def _check_listening_on_services_ports(services, test=False):
"""Check that the unit is actually listening (has the port open) on the
ports that the service specifies are open. If test is True then the
function returns the services with ports that are open rather than
closed.
Returns an OrderedDict of service: ports and a list of booleans
@param services: OrderedDict(service: [port, ...], ...)
@param test: default=False, if False, test for closed, otherwise open.
@returns OrderedDict(service: [port-not-open, ...]...), [boolean]
"""
test = not(not(test)) # ensure test is True or False
all_ports = list(itertools.chain(*services.values()))
ports_states = [port_has_listener('0.0.0.0', p) for p in all_ports]
map_ports = OrderedDict()
matched_ports = [p for p, opened in zip(all_ports, ports_states)
if opened == test] # essentially opened xor test
for service, ports in services.items():
set_ports = set(ports).intersection(matched_ports)
if set_ports:
map_ports[service] = set_ports
return map_ports, ports_states
def _check_listening_on_ports_list(ports):
"""Check that the ports list given are being listened to
Returns a list of ports being listened to and a list of the
booleans.
@param ports: LIST or port numbers.
@returns [(port_num, boolean), ...], [boolean]
"""
ports_open = [port_has_listener('0.0.0.0', p) for p in ports]
return zip(ports, ports_open), ports_open
def _filter_tuples(services_states, state):
"""Return a simple list from a list of tuples according to the condition
@param services_states: LIST of (string, boolean): service and running
state.
@param state: Boolean to match the tuple against.
@returns [LIST of strings] that matched the tuple RHS.
"""
return [s for s, b in services_states if b == state]
def workload_state_compare(current_workload_state, workload_state):
@ -1046,8 +1236,7 @@ def workload_state_compare(current_workload_state, workload_state):
def incomplete_relation_data(configs, required_interfaces):
"""
Check complete contexts against required_interfaces
"""Check complete contexts against required_interfaces
Return dictionary of incomplete relation data.
configs is an OSConfigRenderer object with configs registered
@ -1072,19 +1261,13 @@ def incomplete_relation_data(configs, required_interfaces):
'shared-db': {'related': True}}}
"""
complete_ctxts = configs.complete_contexts()
incomplete_relations = []
for svc_type in required_interfaces.keys():
# Avoid duplicates
found_ctxt = False
for interface in required_interfaces[svc_type]:
if interface in complete_ctxts:
found_ctxt = True
if not found_ctxt:
incomplete_relations.append(svc_type)
incomplete_context_data = {}
for i in incomplete_relations:
incomplete_context_data[i] = configs.get_incomplete_context_data(required_interfaces[i])
return incomplete_context_data
incomplete_relations = [
svc_type
for svc_type, interfaces in required_interfaces.items()
if not set(interfaces).intersection(complete_ctxts)]
return {
i: configs.get_incomplete_context_data(required_interfaces[i])
for i in incomplete_relations}
def do_action_openstack_upgrade(package, upgrade_callback, configs):
@ -1145,3 +1328,245 @@ def remote_restart(rel_name, remote_service=None):
relation_set(relation_id=rid,
relation_settings=trigger,
)
def check_actually_paused(services=None, ports=None):
"""Check that services listed in the services object and and ports
are actually closed (not listened to), to verify that the unit is
properly paused.
@param services: See _extract_services_list_helper
@returns status, : string for status (None if okay)
message : string for problem for status_set
"""
state = None
message = None
messages = []
if services is not None:
services = _extract_services_list_helper(services)
services_running, services_states = _check_running_services(services)
if any(services_states):
# there shouldn't be any running so this is a problem
messages.append("these services running: {}"
.format(", ".join(
_filter_tuples(services_running, True))))
state = "blocked"
ports_open, ports_open_bools = (
_check_listening_on_services_ports(services, True))
if any(ports_open_bools):
message_parts = {service: ", ".join([str(v) for v in open_ports])
for service, open_ports in ports_open.items()}
message = ", ".join(
["{}: [{}]".format(s, sp) for s, sp in message_parts.items()])
messages.append(
"these service:ports are open: {}".format(message))
state = 'blocked'
if ports is not None:
ports_open, bools = _check_listening_on_ports_list(ports)
if any(bools):
messages.append(
"these ports which should be closed, but are open: {}"
.format(", ".join([str(p) for p, v in ports_open if v])))
state = 'blocked'
if messages:
message = ("Services should be paused but {}"
.format(", ".join(messages)))
return state, message
def set_unit_paused():
"""Set the unit to a paused state in the local kv() store.
This does NOT actually pause the unit
"""
with unitdata.HookData()() as t:
kv = t[0]
kv.set('unit-paused', True)
def clear_unit_paused():
"""Clear the unit from a paused state in the local kv() store
This does NOT actually restart any services - it only clears the
local state.
"""
with unitdata.HookData()() as t:
kv = t[0]
kv.set('unit-paused', False)
def is_unit_paused_set():
"""Return the state of the kv().get('unit-paused').
This does NOT verify that the unit really is paused.
To help with units that don't have HookData() (testing)
if it excepts, return False
"""
try:
with unitdata.HookData()() as t:
kv = t[0]
# transform something truth-y into a Boolean.
return not(not(kv.get('unit-paused')))
except:
return False
def pause_unit(assess_status_func, services=None, ports=None,
charm_func=None):
"""Pause a unit by stopping the services and setting 'unit-paused'
in the local kv() store.
Also checks that the services have stopped and ports are no longer
being listened to.
An optional charm_func() can be called that can either raise an
Exception or return non None, None to indicate that the unit
didn't pause cleanly.
The signature for charm_func is:
charm_func() -> message: string
charm_func() is executed after any services are stopped, if supplied.
The services object can either be:
- None : no services were passed (an empty dict is returned)
- a list of strings
- A dictionary (optionally OrderedDict) {service_name: {'service': ..}}
- An array of [{'service': service_name, ...}, ...]
@param assess_status_func: (f() -> message: string | None) or None
@param services: OPTIONAL see above
@param ports: OPTIONAL list of port
@param charm_func: function to run for custom charm pausing.
@returns None
@raises Exception(message) on an error for action_fail().
"""
services = _extract_services_list_helper(services)
messages = []
if services:
for service in services.keys():
stopped = service_pause(service)
if not stopped:
messages.append("{} didn't stop cleanly.".format(service))
if charm_func:
try:
message = charm_func()
if message:
messages.append(message)
except Exception as e:
message.append(str(e))
set_unit_paused()
if assess_status_func:
message = assess_status_func()
if message:
messages.append(message)
if messages:
raise Exception("Couldn't pause: {}".format("; ".join(messages)))
def resume_unit(assess_status_func, services=None, ports=None,
charm_func=None):
"""Resume a unit by starting the services and clearning 'unit-paused'
in the local kv() store.
Also checks that the services have started and ports are being listened to.
An optional charm_func() can be called that can either raise an
Exception or return non None to indicate that the unit
didn't resume cleanly.
The signature for charm_func is:
charm_func() -> message: string
charm_func() is executed after any services are started, if supplied.
The services object can either be:
- None : no services were passed (an empty dict is returned)
- a list of strings
- A dictionary (optionally OrderedDict) {service_name: {'service': ..}}
- An array of [{'service': service_name, ...}, ...]
@param assess_status_func: (f() -> message: string | None) or None
@param services: OPTIONAL see above
@param ports: OPTIONAL list of port
@param charm_func: function to run for custom charm resuming.
@returns None
@raises Exception(message) on an error for action_fail().
"""
services = _extract_services_list_helper(services)
messages = []
if services:
for service in services.keys():
started = service_resume(service)
if not started:
messages.append("{} didn't start cleanly.".format(service))
if charm_func:
try:
message = charm_func()
if message:
messages.append(message)
except Exception as e:
message.append(str(e))
clear_unit_paused()
if assess_status_func:
message = assess_status_func()
if message:
messages.append(message)
if messages:
raise Exception("Couldn't resume: {}".format("; ".join(messages)))
def make_assess_status_func(*args, **kwargs):
"""Creates an assess_status_func() suitable for handing to pause_unit()
and resume_unit().
This uses the _determine_os_workload_status(...) function to determine
what the workload_status should be for the unit. If the unit is
not in maintenance or active states, then the message is returned to
the caller. This is so an action that doesn't result in either a
complete pause or complete resume can signal failure with an action_fail()
"""
def _assess_status_func():
state, message = _determine_os_workload_status(*args, **kwargs)
status_set(state, message)
if state not in ['maintenance', 'active']:
return message
return None
return _assess_status_func
def pausable_restart_on_change(restart_map, stopstart=False):
"""A restart_on_change decorator that checks to see if the unit is
paused. If it is paused then the decorated function doesn't fire.
This is provided as a helper, as the @restart_on_change(...) decorator
is in core.host, yet the openstack specific helpers are in this file
(contrib.openstack.utils). Thus, this needs to be an optional feature
for openstack charms (or charms that wish to use the openstack
pause/resume type features).
It is used as follows:
from contrib.openstack.utils import (
pausable_restart_on_change as restart_on_change)
@restart_on_change(restart_map, stopstart=<boolean>)
def some_hook(...):
pass
see core.utils.restart_on_change() for more details.
@param f: the function to decorate
@param restart_map: the restart map {conf_file: [services]}
@param stopstart: DEFAULT false; whether to stop, start or just restart
@returns decorator to use a restart_on_change with pausability
"""
def wrap(f):
@functools.wraps(f)
def wrapped_f(*args, **kwargs):
if is_unit_paused_set():
return f(*args, **kwargs)
# otherwise, normal restart_on_change functionality
return restart_on_change_helper(
(lambda: f(*args, **kwargs)), restart_map, stopstart)
return wrapped_f
return wrap

134
hooks/charmhelpers/contrib/storage/linux/ceph.py
View File

@ -24,6 +24,8 @@
# Adam Gandelman <adamg@ubuntu.com>
#
import bisect
import errno
import hashlib
import six
import os
@ -163,7 +165,7 @@ class Pool(object):
:return: None
"""
# read-only is easy, writeback is much harder
mode = get_cache_mode(cache_pool)
mode = get_cache_mode(self.service, cache_pool)
if mode == 'readonly':
check_call(['ceph', '--id', self.service, 'osd', 'tier', 'cache-mode', cache_pool, 'none'])
check_call(['ceph', '--id', self.service, 'osd', 'tier', 'remove', self.name, cache_pool])
@ -171,7 +173,7 @@ class Pool(object):
elif mode == 'writeback':
check_call(['ceph', '--id', self.service, 'osd', 'tier', 'cache-mode', cache_pool, 'forward'])
# Flush the cache and wait for it to return
check_call(['ceph', '--id', self.service, '-p', cache_pool, 'cache-flush-evict-all'])
check_call(['rados', '--id', self.service, '-p', cache_pool, 'cache-flush-evict-all'])
check_call(['ceph', '--id', self.service, 'osd', 'tier', 'remove-overlay', self.name])
check_call(['ceph', '--id', self.service, 'osd', 'tier', 'remove', self.name, cache_pool])
@ -259,6 +261,134 @@ class ErasurePool(Pool):
Returns json formatted output"""
def get_mon_map(service):
"""
Returns the current monitor map.
:param service: six.string_types. The Ceph user name to run the command under
:return: json string. :raise: ValueError if the monmap fails to parse.
Also raises CalledProcessError if our ceph command fails
"""
try:
mon_status = check_output(
['ceph', '--id', service,
'mon_status', '--format=json'])
try:
return json.loads(mon_status)
except ValueError as v:
log("Unable to parse mon_status json: {}. Error: {}".format(
mon_status, v.message))
raise
except CalledProcessError as e:
log("mon_status command failed with message: {}".format(
e.message))
raise
def hash_monitor_names(service):
"""
Uses the get_mon_map() function to get information about the monitor
cluster.
Hash the name of each monitor. Return a sorted list of monitor hashes
in an ascending order.
:param service: six.string_types. The Ceph user name to run the command under
:rtype : dict. json dict of monitor name, ip address and rank
example: {
'name': 'ip-172-31-13-165',
'rank': 0,
'addr': '172.31.13.165:6789/0'}
"""
try:
hash_list = []
monitor_list = get_mon_map(service=service)
if monitor_list['monmap']['mons']:
for mon in monitor_list['monmap']['mons']:
hash_list.append(
hashlib.sha224(mon['name'].encode('utf-8')).hexdigest())
return sorted(hash_list)
else:
return None
except (ValueError, CalledProcessError):
raise
def monitor_key_delete(service, key):
"""
Delete a key and value pair from the monitor cluster
:param service: six.string_types. The Ceph user name to run the command under
Deletes a key value pair on the monitor cluster.
:param key: six.string_types. The key to delete.
"""
try:
check_output(
['ceph', '--id', service,
'config-key', 'del', str(key)])
except CalledProcessError as e:
log("Monitor config-key put failed with message: {}".format(
e.output))
raise
def monitor_key_set(service, key, value):
"""
Sets a key value pair on the monitor cluster.
:param service: six.string_types. The Ceph user name to run the command under
:param key: six.string_types. The key to set.
:param value: The value to set. This will be converted to a string
before setting
"""
try:
check_output(
['ceph', '--id', service,
'config-key', 'put', str(key), str(value)])
except CalledProcessError as e:
log("Monitor config-key put failed with message: {}".format(
e.output))
raise
def monitor_key_get(service, key):
"""
Gets the value of an existing key in the monitor cluster.
:param service: six.string_types. The Ceph user name to run the command under
:param key: six.string_types. The key to search for.
:return: Returns the value of that key or None if not found.
"""
try:
output = check_output(
['ceph', '--id', service,
'config-key', 'get', str(key)])
return output
except CalledProcessError as e:
log("Monitor config-key get failed with message: {}".format(
e.output))
return None
def monitor_key_exists(service, key):
"""
Searches for the existence of a key in the monitor cluster.
:param service: six.string_types. The Ceph user name to run the command under
:param key: six.string_types. The key to search for
:return: Returns True if the key exists, False if not and raises an
exception if an unknown error occurs. :raise: CalledProcessError if
an unknown error occurs
"""
try:
check_call(
['ceph', '--id', service,
'config-key', 'exists', str(key)])
# I can return true here regardless because Ceph returns
# ENOENT if the key wasn't found
return True
except CalledProcessError as e:
if e.returncode == errno.ENOENT:
return False
else:
log("Unknown error from ceph config-get exists: {} {}".format(
e.returncode, e.output))
raise
def get_erasure_profile(service, name):
"""
:param service: six.string_types. The Ceph user name to run the command under

31
hooks/charmhelpers/core/hookenv.py
View File

@ -912,6 +912,24 @@ def payload_status_set(klass, pid, status):
subprocess.check_call(cmd)
@translate_exc(from_exc=OSError, to_exc=NotImplementedError)
def resource_get(name):
"""used to fetch the resource path of the given name.
<name> must match a name of defined resource in metadata.yaml
returns either a path or False if resource not available
"""
if not name:
return False
cmd = ['resource-get', name]
try:
return subprocess.check_output(cmd).decode('UTF-8')
except subprocess.CalledProcessError:
return False
@cached
def juju_version():
"""Full version string (eg. '1.23.3.1-trusty-amd64')"""
@ -976,3 +994,16 @@ def _run_atexit():
for callback, args, kwargs in reversed(_atexit):
callback(*args, **kwargs)
del _atexit[:]
@translate_exc(from_exc=OSError, to_exc=NotImplementedError)
def network_get_primary_address(binding):
'''
Retrieve the primary network address for a named binding
:param binding: string. The name of a relation of extra-binding
:return: string. The primary IP address for the named binding
:raise: NotImplementedError if run on Juju < 2.0
'''
cmd = ['network-get', '--primary-address', binding]
return subprocess.check_output(cmd).strip()

50
hooks/charmhelpers/core/host.py
View File

@ -30,6 +30,8 @@ import random
import string
import subprocess
import hashlib
import functools
import itertools
from contextlib import contextmanager
from collections import OrderedDict
@ -428,27 +430,47 @@ def restart_on_change(restart_map, stopstart=False):
restarted if any file matching the pattern got changed, created
or removed. Standard wildcards are supported, see documentation
for the 'glob' module for more information.
@param restart_map: {path_file_name: [service_name, ...]
@param stopstart: DEFAULT false; whether to stop, start OR restart
@returns result from decorated function
"""
def wrap(f):
@functools.wraps(f)
def wrapped_f(*args, **kwargs):
checksums = {path: path_hash(path) for path in restart_map}
f(*args, **kwargs)
restarts = []
for path in restart_map:
if path_hash(path) != checksums[path]:
restarts += restart_map[path]
services_list = list(OrderedDict.fromkeys(restarts))
if not stopstart:
for service_name in services_list:
service('restart', service_name)
else:
for action in ['stop', 'start']:
for service_name in services_list:
service(action, service_name)
return restart_on_change_helper(
(lambda: f(*args, **kwargs)), restart_map, stopstart)
return wrapped_f
return wrap
def restart_on_change_helper(lambda_f, restart_map, stopstart=False):
"""Helper function to perform the restart_on_change function.
This is provided for decorators to restart services if files described
in the restart_map have changed after an invocation of lambda_f().
@param lambda_f: function to call.
@param restart_map: {file: [service, ...]}
@param stopstart: whether to stop, start or restart a service
@returns result of lambda_f()
"""
checksums = {path: path_hash(path) for path in restart_map}
r = lambda_f()
# create a list of lists of the services to restart
restarts = [restart_map[path]
for path in restart_map
if path_hash(path) != checksums[path]]
# create a flat list of ordered services without duplicates from lists
services_list = list(OrderedDict.fromkeys(itertools.chain(*restarts)))
if services_list:
actions = ('stop', 'start') if stopstart else ('restart',)
for action in actions:
for service_name in services_list:
service(action, service_name)
return r
def lsb_release():
"""Return /etc/lsb-release in a dict"""
d = {}

10
hooks/nova_compute_hooks.py
View File

@ -88,6 +88,7 @@ from nova_compute_context import (
)
from charmhelpers.contrib.charmsupport import nrpe
from charmhelpers.core.sysctl import create as create_sysctl
from charmhelpers.contrib.hardening.harden import harden
from socket import gethostname
@ -96,6 +97,7 @@ CONFIGS = register_configs()
@hooks.hook('install.real')
@harden()
def install():
status_set('maintenance', 'Executing pre-install')
execd_preinstall()
@ -111,6 +113,7 @@ def install():
@hooks.hook('config-changed')
@restart_on_change(restart_map())
@harden()
def config_changed():
if config('prefer-ipv6'):
status_set('maintenance', 'configuring ipv6')
@ -345,6 +348,7 @@ def relation_broken():
@hooks.hook('upgrade-charm')
@harden()
def upgrade_charm():
# NOTE: ensure psutil install for hugepages configuration
status_set('maintenance', 'Installing apt packages')
@ -433,6 +437,12 @@ def designate_changed():
CONFIGS.write(NOVA_CONF)
@hooks.hook('update-status')
@harden()
def update_status():
log('Updating status.')
def main():
try:
hooks.execute(sys.argv)

7
tests/charmhelpers/contrib/amulet/utils.py
View File

@ -782,15 +782,20 @@ class AmuletUtils(object):
# amulet juju action helpers:
def run_action(self, unit_sentry, action,
_check_output=subprocess.check_output):
_check_output=subprocess.check_output,
params=None):
"""Run the named action on a given unit sentry.
params a dict of parameters to use
_check_output parameter is used for dependency injection.
@return action_id.
"""
unit_id = unit_sentry.info["unit_name"]
command = ["juju", "action", "do", "--format=json", unit_id, action]
if params is not None:
for key, value in params.iteritems():
command.append("{}={}".format(key, value))
self.log.info("Running command: %s\n" % " ".join(command))
output = _check_output(command, universal_newlines=True)
data = json.loads(output)

53
tests/charmhelpers/contrib/openstack/amulet/utils.py
View File

@ -27,7 +27,11 @@ import cinderclient.v1.client as cinder_client
import glanceclient.v1.client as glance_client
import heatclient.v1.client as heat_client
import keystoneclient.v2_0 as keystone_client
import novaclient.v1_1.client as nova_client
from keystoneclient.auth.identity import v3 as keystone_id_v3
from keystoneclient import session as keystone_session
from keystoneclient.v3 import client as keystone_client_v3
import novaclient.client as nova_client
import pika
import swiftclient
@ -38,6 +42,8 @@ from charmhelpers.contrib.amulet.utils import (
DEBUG = logging.DEBUG
ERROR = logging.ERROR
NOVA_CLIENT_VERSION = "2"
class OpenStackAmuletUtils(AmuletUtils):
"""OpenStack amulet utilities.
@ -139,7 +145,7 @@ class OpenStackAmuletUtils(AmuletUtils):
return "role {} does not exist".format(e['name'])
return ret
def validate_user_data(self, expected, actual):
def validate_user_data(self, expected, actual, api_version=None):
"""Validate user data.
Validate a list of actual user data vs a list of expected user
@ -150,10 +156,15 @@ class OpenStackAmuletUtils(AmuletUtils):
for e in expected:
found = False
for act in actual:
a = {'enabled': act.enabled, 'name': act.name,
'email': act.email, 'tenantId': act.tenantId,
'id': act.id}
if e['name'] == a['name']:
if e['name'] == act.name:
a = {'enabled': act.enabled, 'name': act.name,
'email': act.email, 'id': act.id}
if api_version == 3:
a['default_project_id'] = getattr(act,
'default_project_id',
'none')
else:
a['tenantId'] = act.tenantId
found = True
ret = self._validate_dict_data(e, a)
if ret:
@ -188,15 +199,30 @@ class OpenStackAmuletUtils(AmuletUtils):
return cinder_client.Client(username, password, tenant, ept)
def authenticate_keystone_admin(self, keystone_sentry, user, password,
tenant):
tenant=None, api_version=None,
keystone_ip=None):
"""Authenticates admin user with the keystone admin endpoint."""
self.log.debug('Authenticating keystone admin...')
unit = keystone_sentry
service_ip = unit.relation('shared-db',
'mysql:shared-db')['private-address']
ep = "http://{}:35357/v2.0".format(service_ip.strip().decode('utf-8'))
return keystone_client.Client(username=user, password=password,
tenant_name=tenant, auth_url=ep)
if not keystone_ip:
keystone_ip = unit.relation('shared-db',
'mysql:shared-db')['private-address']
base_ep = "http://{}:35357".format(keystone_ip.strip().decode('utf-8'))
if not api_version or api_version == 2:
ep = base_ep + "/v2.0"
return keystone_client.Client(username=user, password=password,
tenant_name=tenant, auth_url=ep)
else:
ep = base_ep + "/v3"
auth = keystone_id_v3.Password(
user_domain_name='admin_domain',
username=user,
password=password,
domain_name='admin_domain',
auth_url=ep,
)
sess = keystone_session.Session(auth=auth)
return keystone_client_v3.Client(session=sess)
def authenticate_keystone_user(self, keystone, user, password, tenant):
"""Authenticates a regular user with the keystone public endpoint."""
@ -225,7 +251,8 @@ class OpenStackAmuletUtils(AmuletUtils):
self.log.debug('Authenticating nova user ({})...'.format(user))
ep = keystone.service_catalog.url_for(service_type='identity',
endpoint_type='publicURL')
return nova_client.Client(username=user, api_key=password,
return nova_client.Client(NOVA_CLIENT_VERSION,
username=user, api_key=password,
project_id=tenant, auth_url=ep)
def authenticate_swift_user(self, keystone, user, password, tenant):

18
unit_tests/test_actions_git_reinstall.py
View File

@ -1,12 +1,22 @@
from mock import patch
import sys
from mock import patch, MagicMock
# python-apt is not installed as part of test-requirements but is imported by
# some charmhelpers modules so create a fake import.
sys.modules['apt'] = MagicMock()
sys.modules['apt_pkg'] = MagicMock()
with patch('charmhelpers.core.hookenv.config') as config:
config.return_value = 'nova'
import nova_compute_utils as utils # noqa
with patch('nova_compute_utils.restart_map'):
with patch('nova_compute_utils.register_configs'):
import git_reinstall
with patch('charmhelpers.contrib.hardening.harden.harden') as mock_dec:
mock_dec.side_effect = (lambda *dargs, **dkwargs: lambda f:
lambda *args, **kwargs: f(*args, **kwargs))
with patch('nova_compute_utils.restart_map'):
with patch('nova_compute_utils.register_configs'):
import git_reinstall
from test_utils import (
CharmTestCase

18
unit_tests/test_nova_compute_hooks.py
View File

@ -1,15 +1,25 @@
import sys
import yaml
from mock import (
call,
patch,
MagicMock
)
import yaml
# python-apt is not installed as part of test-requirements but is imported by
# some charmhelpers modules so create a fake import.
sys.modules['apt'] = MagicMock()
sys.modules['apt_pkg'] = MagicMock()
from test_utils import CharmTestCase
with patch("nova_compute_utils.restart_map"):
with patch("nova_compute_utils.register_configs"):
import nova_compute_hooks as hooks
with patch('charmhelpers.contrib.hardening.harden.harden') as mock_dec:
mock_dec.side_effect = (lambda *dargs, **dkwargs: lambda f:
lambda *args, **kwargs: f(*args, **kwargs))
with patch("nova_compute_utils.restart_map"):
with patch("nova_compute_utils.register_configs"):
import nova_compute_hooks as hooks
TO_PATCH = [