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# Copyright (C) 2020 Red Hat, Inc. |
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# |
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# This copyrighted material is made available to anyone wishing to use, |
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# modify, copy, or redistribute it subject to the terms and conditions of |
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# the GNU General Public License v.2, or (at your option) any later version. |
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# This program is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY expressed or implied, including the implied warranties of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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# Public License for more details. You should have received a copy of the |
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# GNU General Public License along with this program; if not, write to the |
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the |
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# source code or documentation are not subject to the GNU General Public |
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# License and may only be used or replicated with the express permission of |
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# Red Hat, Inc. |
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# |
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import logging |
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import warnings |
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from pykickstart.errors import KickstartDeprecationWarning |
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from pyanaconda.core.configuration.anaconda import conf |
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from pyanaconda.core.dbus import DBus |
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from pyanaconda.core.signal import Signal |
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from pyanaconda.modules.common.base import KickstartService |
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from pyanaconda.modules.common.containers import TaskContainer |
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from pyanaconda.modules.common.structures.requirement import Requirement |
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from org_fedora_oscap import common |
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from org_fedora_oscap.constants import OSCAP |
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from org_fedora_oscap.service.installation import PrepareValidContent, \ |
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EvaluateRulesTask, InstallContentTask, RemediateSystemTask |
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from org_fedora_oscap.service.kickstart import OSCAPKickstartSpecification, KickstartParseError |
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from org_fedora_oscap.service.oscap_interface import OSCAPInterface |
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from org_fedora_oscap.structures import PolicyData |
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log = logging.getLogger("anaconda") |
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__all__ = ["OSCAPService"] |
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class OSCAPService(KickstartService): |
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"""The implementation of the OSCAP service.""" |
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def __init__(self): |
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"""Create a service.""" |
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super().__init__() |
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self._policy_enabled = True |
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self.policy_enabled_changed = Signal() |
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self._policy_data = PolicyData() |
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self.policy_data_changed = Signal() |
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self.installation_canceled = Signal() |
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self.canonical_addon_name = common.ADDON_NAMES[0] |
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@property |
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def policy_enabled(self): |
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"""Is the security policy enabled? |
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:return: True or False |
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""" |
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return self._policy_enabled |
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@policy_enabled.setter |
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def policy_enabled(self, value): |
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"""Should be the security policy enabled? |
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:param value: True or False |
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""" |
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self._policy_enabled = value |
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self.policy_enabled_changed.emit() |
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log.debug("OSCAP Addon: Policy enabled is set to '%s'.", value) |
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@property |
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def policy_data(self): |
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"""The security policy data. |
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:return: an instance of PolicyData |
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""" |
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return self._policy_data |
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@policy_data.setter |
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def policy_data(self, value): |
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"""Set the security policy data. |
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:param value: an instance of PolicyData |
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""" |
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self._policy_data = value |
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self.policy_data_changed.emit() |
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log.debug("OSCAP Addon: Policy data is set to '%s'.", value) |
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@property |
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def installation_enabled(self): |
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"""Is the installation enabled? |
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:return: True or False |
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""" |
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return self.policy_enabled and self.policy_data.profile_id |
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def publish(self): |
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"""Publish the DBus objects.""" |
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TaskContainer.set_namespace(OSCAP.namespace) |
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DBus.publish_object(OSCAP.object_path, OSCAPInterface(self)) |
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DBus.register_service(OSCAP.service_name) |
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@property |
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def kickstart_specification(self): |
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"""Return the kickstart specification.""" |
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return OSCAPKickstartSpecification |
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def process_kickstart(self, data): |
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"""Process the kickstart data.""" |
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preferred_section_header = f"%addon {self.canonical_addon_name}" |
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all_addon_data = [ |
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getattr(data.addons, name) for name in common.ADDON_NAMES] |
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relevant_data = [d for d in all_addon_data if d.addon_section_present] |
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if len(relevant_data) > 1: |
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msg = common._( |
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"You have used more than one oscap addon sections in the kickstart. " |
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f"Please use only one, preferably '{preferred_section_header}'.") |
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raise KickstartParseError(msg) |
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if len(relevant_data) == 0: |
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addon_data = all_addon_data[0] |
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else: |
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addon_data = relevant_data[0] |
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self.policy_data = addon_data.policy_data |
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if (common.COMPLAIN_ABOUT_NON_CANONICAL_NAMES |
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and addon_data.name != self.canonical_addon_name): |
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used_section_header = f"%addon {addon_data.name}" |
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msg = common._( |
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f"You have configured the oscap addon using '{used_section_header}' section. " |
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f"Please update your configuration and use '{preferred_section_header}'. " |
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"Support for legacy sections will be removed in the future major version.") |
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warnings.warn(msg, KickstartDeprecationWarning) |
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def setup_kickstart(self, data): |
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"""Set the given kickstart data.""" |
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policy_data = self.policy_data |
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addon_data = getattr(data.addons, self.canonical_addon_name) |
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addon_data.policy_data = policy_data |
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def collect_requirements(self): |
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"""Return installation requirements. |
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:return: a list of requirements |
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""" |
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if not self.installation_enabled: |
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log.debug("OSCAP Addon: The installation is disabled. Skip the requirements.") |
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return [] |
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requirements = [ |
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Requirement.for_package( |
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package_name="openscap", |
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reason="Required by oscap add-on." |
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), |
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Requirement.for_package( |
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package_name="openscap-scanner", |
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reason="Required by oscap add-on." |
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) |
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] |
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if self.policy_data.content_type == "scap-security-guide": |
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requirements.append( |
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Requirement.for_package( |
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package_name="scap-security-guide", |
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reason="Required by oscap add-on." |
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) |
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) |
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return requirements |
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def configure_with_tasks(self): |
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"""Return configuration tasks. |
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:return: a list of tasks |
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""" |
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if not self.installation_enabled: |
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log.debug("OSCAP Addon: The installation is disabled. Skip the configuration.") |
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return [] |
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tasks = [ |
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PrepareValidContent( |
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policy_data=self.policy_data, |
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file_path=common.get_raw_preinst_content_path(self.policy_data), |
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content_path=common.get_preinst_content_path(self.policy_data), |
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), |
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EvaluateRulesTask( |
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policy_data=self.policy_data, |
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content_path=common.get_preinst_content_path(self.policy_data), |
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tailoring_path=common.get_preinst_tailoring_path(self.policy_data), |
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), |
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] |
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self._cancel_tasks_on_error(tasks) |
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return tasks |
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def install_with_tasks(self): |
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"""Return installation tasks. |
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:return: a list of tasks |
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""" |
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if not self.installation_enabled: |
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log.debug("OSCAP Addon: The installation is disabled. Skip the installation.") |
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return [] |
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tasks = [ |
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InstallContentTask( |
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sysroot=conf.target.system_root, |
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policy_data=self.policy_data, |
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file_path=common.get_raw_preinst_content_path(self.policy_data), |
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content_path=common.get_preinst_content_path(self.policy_data), |
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tailoring_path=common.get_preinst_tailoring_path(self.policy_data), |
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target_directory=common.TARGET_CONTENT_DIR, |
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), |
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RemediateSystemTask( |
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sysroot=conf.target.system_root, |
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policy_data=self.policy_data, |
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target_content_path=common.get_postinst_content_path(self.policy_data), |
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target_tailoring_path=common.get_preinst_tailoring_path(self.policy_data) |
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) |
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] |
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self._cancel_tasks_on_error(tasks) |
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return tasks |
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def _cancel_tasks_on_error(self, tasks): |
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"""Cancel all tasks on error. |
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If one of the installation tasks fails, we will emit the |
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installation_canceled signal that will cancel all scheduled |
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installation tasks. |
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This signal allows to cancel tasks from the install_with_tasks |
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method based on a failure of a task from the configure_with_tasks |
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method. All these tasks are created and scheduled before Anaconda |
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starts to execute them. |
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:param tasks: a list of tasks |
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""" |
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for task in tasks: |
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# Cancel the installation if the task fails. |
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task.failed_signal.connect(self.installation_canceled.emit) |
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# Cancel the task if the installation was canceled. |
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self.installation_canceled.connect(task.cancel) |
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OpenSCAP /
oscap-anaconda-addon
