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# Copyright 2022, Red Hat, Inc. |
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# SPDX-License-Identifier: LGPL-2.1-or-later |
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from ..data_structures import LogicalTest, Platform |
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from ..exceptions import ExceptionNoCPEApplicabilityLanguage |
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from ..namespaces import NAMESPACES |
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from .full_text_parser import FullTextParser |
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TEXT_TO_BOOL = {"true": True, "false": False, "": False} |
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class CPEApplicabilityLanguageParser: |
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def __init__(self, root, oval_cpe_definitions): |
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self.root = root |
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self.platform_to_oval_cpe_id = self.get_platform_to_oval_cpe_id_dict() |
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self.full_text_parser = FullTextParser({}) |
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self.oval_cpe_definitions = oval_cpe_definitions |
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def get_platform_to_oval_cpe_id_dict(self): |
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cpe_list = self.root.find(".//ds:component/cpe-dict:cpe-list", NAMESPACES) |
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out = {} |
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if cpe_list is None: |
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return out |
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for cpe_item in cpe_list: |
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name = cpe_item.get("name") |
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check = cpe_item.find(".//cpe-dict:check", NAMESPACES) |
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oval_id = check.text if check is not None else name |
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out[name] = oval_id |
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return out |
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def _get_cpe_platform_elements(self): |
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cpe_platform_elements = {} |
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platform_specification = self.root.find('.//cpe-lang:platform-specification', NAMESPACES) |
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if platform_specification is None: |
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raise ExceptionNoCPEApplicabilityLanguage |
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for platform in platform_specification: |
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platform_id = platform.get("id") |
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cpe_platform_elements[platform_id] = platform |
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return cpe_platform_elements |
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def _get_oval_cpe_tree(self, platform_name, check_id_ref): |
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oval_tree = None |
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oval_cpe_id = None |
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if platform_name in self.platform_to_oval_cpe_id: |
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oval_cpe_id = self.platform_to_oval_cpe_id[platform_name] |
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if check_id_ref is not None: |
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oval_cpe_id = check_id_ref |
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oval_cpe_definition = self.oval_cpe_definitions.get(oval_cpe_id, None) |
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oval_tree = oval_cpe_definition.oval_tree if oval_cpe_definition is not None else None |
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return oval_tree |
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def get_logical_test(self, logical_test_el): |
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operator = logical_test_el.get("operator") |
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negation = logical_test_el.get("negate", "") |
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logical_test = LogicalTest(operator, negation=TEXT_TO_BOOL[negation]) |
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for child_logical_test_el in logical_test_el: |
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if "fact-ref" in child_logical_test_el.tag: |
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platform_name = child_logical_test_el.get("name") |
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check_id_ref = child_logical_test_el.get("id-ref") |
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logical_test.children.append( |
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LogicalTest( |
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node_type="fact-ref", |
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oval_tree=self._get_oval_cpe_tree(platform_name, check_id_ref)) |
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) |
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if child_logical_test_el.get('operator') is not None: |
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logical_test.children.append(self.get_logical_test(child_logical_test_el)) |
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return logical_test |
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def get_cpe_platforms(self): |
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out = {} |
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for platform, platform_el in self._get_cpe_platform_elements().items(): |
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title_el = platform_el.find(".//cpe-lang:title", NAMESPACES) |
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title_str = "" |
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if title_el is not None: |
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self.full_text_parser.get_full_description(title_el) |
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logical_test_el = platform_el.find(".//cpe-lang:logical-test", NAMESPACES) |
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out[platform] = Platform( |
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platform_id=platform, |
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logical_test=self.get_logical_test(logical_test_el), |
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title=title_str |
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) |
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return out |
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OpenSCAP /
openscap-report
