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''' |
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Modules for create node IDs and parsing xml |
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3
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''' |
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4
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import uuid |
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import os |
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6
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import sys |
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7
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8
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from lxml import etree as ET |
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9
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10
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1 |
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from .oval_node import OvalNode |
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11
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12
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1 |
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ns = { |
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'XMLSchema': 'http://oval.mitre.org/XMLSchema/oval-results-5', |
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'xccdf': 'http://checklists.nist.gov/xccdf/1.2', |
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'arf': 'http://scap.nist.gov/schema/asset-reporting-format/1.1', |
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'oval-definitions': 'http://oval.mitre.org/XMLSchema/oval-definitions-5', |
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'scap': 'http://scap.nist.gov/schema/scap/source/1.2', |
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'oval-characteristics': 'http://oval.mitre.org/XMLSchema/oval-system-characteristics-5', |
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} |
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20
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21
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22
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1 |
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class XmlParser(): |
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def __init__(self, src): |
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self.src = src |
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self.tree = ET.parse(self.src) |
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self.root = self.tree.getroot() |
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27
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1 |
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if not self.validate( |
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28
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'schemas/arf/1.1/asset-reporting-format_1.1.0.xsd'): |
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29
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CRED = '\033[91m' |
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30
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CEND = '\033[0m' |
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31
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print( |
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32
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CRED + |
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"Warning: This file is not valid arf report." + |
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CEND, |
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file=sys.stderr) |
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36
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try: |
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37
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self.used_rules = self._get_used_rules() |
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38
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self.report_data = self._get_report_data( |
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39
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self.used_rules[0]['href']) |
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40
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self.notselected_rules = self._get_notselected_rules() |
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41
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1 |
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self.scan_definitions = self._get_scan() |
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42
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self.oval_definitions = self._get_oval_definitions() |
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43
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self.tests = self._get_tests() |
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self.objects = self._get_objects() |
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45
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self.collected_objects = self._get_collected_objects() |
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46
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self.system_data = self._get_system_data() |
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47
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self.tests_info = self._get_tests_info() |
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48
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except BaseException: |
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raise ValueError("err- This is not arf report file.") |
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50
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51
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def get_src(self, src): |
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_dir = os.path.dirname(os.path.realpath(__file__)) |
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53
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FIXTURE_DIR = os.path.join(_dir, src) |
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54
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return str(FIXTURE_DIR) |
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55
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56
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def validate(self, xsd_path): |
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57
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xsd_path = self.get_src(xsd_path) |
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58
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xmlschema_doc = ET.parse(xsd_path) |
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59
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xmlschema = ET.XMLSchema(xmlschema_doc) |
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60
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61
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1 |
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xml_doc = self.tree |
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62
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1 |
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result = xmlschema.validate(xml_doc) |
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63
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64
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return result |
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65
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66
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1 |
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def _get_report_data(self, href): |
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report_data = None |
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68
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reports = self.root.find('.//arf:reports', ns) |
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1 |
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for report in reports: |
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if "#" + str(report.get("id")) == href: |
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report_data = report |
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return report_data |
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73
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74
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def _get_definitions(self): |
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75
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data = self.report_data.find( |
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76
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('.//XMLSchema:oval_results/XMLSchema:results/' |
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'XMLSchema:system/XMLSchema:definitions'), ns) |
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return data |
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80
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1 |
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def _get_oval_definitions(self): |
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81
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data = self.report_data.find( |
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('.//XMLSchema:oval_results/oval-definitions:oval_definitions'), ns) |
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return data |
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84
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85
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1 |
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def _get_collected_objects(self): |
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86
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1 |
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data = self.report_data.find( |
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87
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('.//XMLSchema:oval_results/XMLSchema:results/' |
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'XMLSchema:system/oval-characteristics:oval_system_characteristics' |
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'/oval-characteristics:collected_objects'), ns) |
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out = {} |
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1 |
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for item in data: |
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out[item.attrib.get('id')] = item |
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return out |
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95
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1 |
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def _get_system_data(self): |
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96
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1 |
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data = self.report_data.find( |
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97
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('.//XMLSchema:oval_results/XMLSchema:results/' |
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'XMLSchema:system/oval-characteristics:oval_system_characteristics' |
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'/oval-characteristics:system_data'), ns) |
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out = {} |
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for item in data: |
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out[item.attrib.get('id')] = item |
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return out |
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105
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1 |
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def _get_tests(self): |
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data = self.oval_definitions.find( |
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('.//oval-definitions:tests'), ns) |
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return data |
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110
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1 |
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def _get_objects(self): |
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data = self.oval_definitions.find( |
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('.//oval-definitions:objects'), ns) |
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out = {} |
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1 |
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for item in data: |
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out[item.attrib.get('id')] = item |
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116
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1 |
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return out |
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117
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118
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1 |
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def _get_used_rules(self): |
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119
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1 |
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rulesResults = self.root.findall( |
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120
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'.//xccdf:TestResult/xccdf:rule-result', ns) |
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121
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1 |
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rules = [] |
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122
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1 |
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for ruleResult in rulesResults: |
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1 |
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result = ruleResult.find('.//xccdf:result', ns) |
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124
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1 |
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if result.text != "notselected": |
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125
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1 |
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check_content_ref = ruleResult.find( |
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126
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'.//xccdf:check/xccdf:check-content-ref', ns) |
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127
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1 |
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if check_content_ref is not None: |
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rules.append(dict( |
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id_rule=ruleResult.get('idref'), |
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id_def=check_content_ref.attrib.get('name'), |
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href=check_content_ref.attrib.get('href'), |
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result=result.text, |
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)) |
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1 |
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return rules |
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136
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1 |
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def _get_notselected_rules(self): |
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1 |
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rulesResults = self.root.findall( |
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138
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'.//xccdf:TestResult/xccdf:rule-result', ns) |
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1 |
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rules = [] |
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140
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1 |
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for ruleResult in rulesResults: |
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141
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1 |
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result = ruleResult.find('.//xccdf:result', ns) |
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142
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1 |
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if result.text == "notselected": |
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143
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1 |
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rules.append(dict(id_rule=ruleResult.get('idref'))) |
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144
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1 |
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return rules |
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145
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146
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1 |
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def _get_scan(self): |
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147
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1 |
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scan = dict(definitions=[]) |
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148
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1 |
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for i in self._get_definitions(): |
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149
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scan['definitions'].append(self.build_graph(i)) |
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150
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1 |
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self.insert_comments(scan) |
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151
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1 |
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return self._fill_extend_definition(scan) |
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152
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153
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1 |
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def parse_data_to_dict(self, rule_id): |
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1 |
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for definition in self.scan_definitions['definitions']: |
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155
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1 |
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if self.get_def_id_by_rule_id(rule_id) == definition['id']: |
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156
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1 |
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return dict(rule_id=rule_id, definition=definition) |
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157
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158
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1 |
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def _xml_dict_to_node(self, dict_of_definition): |
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159
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1 |
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children = [] |
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160
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1 |
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for child in dict_of_definition['node']: |
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161
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1 |
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if 'operator' in child and 'id': |
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162
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1 |
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children.append(self._xml_dict_to_node(child)) |
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else: |
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164
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1 |
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children.append( |
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165
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OvalNode( |
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166
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child['value_id'], |
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167
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'value', |
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168
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child['value'], |
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169
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child['negate'], |
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170
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child['comment'], |
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171
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child['tag'], |
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172
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self.get_info_about_test(child['value_id']), |
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173
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None |
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174
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)) |
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175
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176
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1 |
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if 'id' in dict_of_definition: |
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177
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1 |
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children[0].node_id = dict_of_definition['id'] |
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178
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1 |
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return children[0] |
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179
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else: |
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180
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1 |
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return OvalNode( |
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181
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str(uuid.uuid4()), |
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182
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'operator', |
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183
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dict_of_definition['operator'], |
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184
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dict_of_definition['negate'], |
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185
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dict_of_definition['comment'], |
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186
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dict_of_definition['tag'], |
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187
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None, |
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188
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children, |
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189
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) |
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190
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191
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1 |
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def get_def_id_by_rule_id(self, rule_id): |
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192
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1 |
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for rule in self.notselected_rules: |
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193
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1 |
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if rule['id_rule'] == rule_id: |
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194
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1 |
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raise ValueError( |
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195
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'err- rule "{}" was not selected, so there are no results.' |
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196
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.format(rule_id)) |
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197
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1 |
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for rule in self.used_rules: |
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198
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1 |
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if rule['id_rule'] == rule_id: |
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199
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1 |
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return rule['id_def'] |
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200
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1 |
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raise ValueError('err- 404 rule not found!') |
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201
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202
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1 |
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def get_rule_dict(self, rule_id): |
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203
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1 |
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return self.parse_data_to_dict(rule_id) |
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204
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205
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1 |
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def xml_dict_of_rule_to_node(self, rule): |
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206
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1 |
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dict_of_definition = rule['definition'] |
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207
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1 |
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return OvalNode( |
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208
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rule['rule_id'], |
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209
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'operator', |
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210
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'and', |
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211
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False, |
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212
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dict_of_definition['comment'], |
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213
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"Rule", |
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214
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None, |
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215
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[self._xml_dict_to_node(dict_of_definition)], |
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216
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) |
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217
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218
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1 |
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def get_oval_tree(self, rule_id=None): |
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219
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1 |
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return self.xml_dict_of_rule_to_node(self.parse_data_to_dict(rule_id)) |
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220
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221
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1 |
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def build_graph(self, tree_data): |
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222
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1 |
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graph = dict( |
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223
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id=tree_data.get('definition_id'), |
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224
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node=[], |
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225
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) |
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226
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1 |
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for tree in tree_data: |
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227
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1 |
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negate_status = False |
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228
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1 |
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if 'negate' in tree: |
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229
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negate_status = self._str_to_bool(tree.get('negate')) |
|
230
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1 |
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graph['negate'] = negate_status |
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231
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1 |
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graph['node'].append(self._build_node(tree, "Definition")) |
|
232
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1 |
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return graph |
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233
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234
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1 |
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def _str_to_bool(self, s): |
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235
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1 |
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if s == 'true': |
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236
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1 |
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return True |
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237
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1 |
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elif s == 'false': |
|
238
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1 |
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return False |
|
239
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else: |
|
240
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1 |
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raise ValueError('err- negation is not bool') |
|
241
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242
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1 |
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def _build_node(self, tree, tag): |
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243
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1 |
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negate_status = False |
|
244
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1 |
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if tree.get('negate') is not None: |
|
245
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1 |
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negate_status = self._str_to_bool(tree.get('negate')) |
|
246
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|
247
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1 |
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node = dict( |
|
248
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operator=tree.get('operator'), |
|
249
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negate=negate_status, |
|
250
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result=tree.get('result'), |
|
251
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comment=None, |
|
252
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tag=tag, |
|
253
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node=[], |
|
254
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) |
|
255
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1 |
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for child in tree: |
|
256
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1 |
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if child.get('operator') is not None: |
|
257
|
1 |
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node['node'].append(self._build_node(child, "Criteria")) |
|
258
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|
else: |
|
259
|
1 |
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negate_status = False |
|
260
|
1 |
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if child.get('negate') is not None: |
|
261
|
1 |
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negate_status = self._str_to_bool(child.get('negate')) |
|
262
|
|
|
|
|
263
|
1 |
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if child.get('definition_ref') is not None: |
|
264
|
1 |
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node['node'].append( |
|
265
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|
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dict( |
|
266
|
|
|
extend_definition=child.get('definition_ref'), |
|
267
|
|
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result=child.get('result'), |
|
268
|
|
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negate=negate_status, |
|
269
|
|
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comment=None, |
|
270
|
|
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tag="Extend definition", |
|
271
|
|
|
)) |
|
272
|
|
|
else: |
|
273
|
1 |
|
node['node'].append( |
|
274
|
|
|
dict( |
|
275
|
|
|
value_id=child.get('test_ref'), |
|
276
|
|
|
value=child.get('result'), |
|
277
|
|
|
negate=negate_status, |
|
278
|
|
|
comment=None, |
|
279
|
|
|
tag="Test", |
|
280
|
|
|
)) |
|
281
|
1 |
|
return node |
|
282
|
|
|
|
|
283
|
1 |
|
def _fill_extend_definition(self, scan): |
|
284
|
1 |
|
out = dict(definitions=[]) |
|
285
|
1 |
|
for definition in scan['definitions']: |
|
286
|
1 |
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nodes = [] |
|
287
|
1 |
|
for value in definition['node']: |
|
288
|
1 |
|
nodes.append(self._operator_as_child(value, scan)) |
|
289
|
1 |
|
out['definitions'].append( |
|
290
|
|
|
dict( |
|
291
|
|
|
id=definition['id'], |
|
292
|
|
|
comment=definition['comment'], |
|
293
|
|
|
node=nodes, |
|
294
|
|
|
)) |
|
295
|
1 |
|
return out |
|
296
|
|
|
|
|
297
|
1 |
|
def _operator_as_child(self, value, scan): |
|
298
|
1 |
|
out = dict( |
|
299
|
|
|
operator=value['operator'], |
|
300
|
|
|
negate=value['negate'], |
|
301
|
|
|
result=value['result'], |
|
302
|
|
|
comment=value['comment'], |
|
303
|
|
|
tag=value['tag'], |
|
304
|
|
|
node=[], |
|
305
|
|
|
) |
|
306
|
1 |
|
for child in value['node']: |
|
307
|
1 |
|
if 'operator' in child: |
|
308
|
1 |
|
out['node'].append(self._operator_as_child(child, scan)) |
|
309
|
1 |
|
elif 'extend_definition' in child: |
|
310
|
1 |
|
out['node'].append( |
|
311
|
|
|
self._find_definition_by_id( |
|
312
|
|
|
scan, |
|
313
|
|
|
child['extend_definition'], |
|
314
|
|
|
child['negate'], |
|
315
|
|
|
child['comment'], |
|
316
|
|
|
child['tag'], |
|
317
|
|
|
)) |
|
318
|
1 |
|
elif 'value_id' in child: |
|
319
|
1 |
|
out['node'].append(child) |
|
320
|
|
|
else: |
|
321
|
|
|
raise ValueError('error - unknown child') |
|
322
|
1 |
|
return out |
|
323
|
|
|
|
|
324
|
1 |
|
def _find_definition_by_id(self, scan, id, negate_status, comment, tag): |
|
325
|
1 |
|
for definition in scan['definitions']: |
|
326
|
1 |
|
if definition['id'] == id: |
|
327
|
1 |
|
definition['node'][0]['negate'] = negate_status |
|
328
|
1 |
|
definition['node'][0]['comment'] = comment |
|
329
|
1 |
|
definition['node'][0]['tag'] = tag |
|
330
|
1 |
|
return self._operator_as_child(definition['node'][0], scan) |
|
331
|
|
|
|
|
332
|
1 |
|
def create_dict_form_criteria(self, criteria, description): |
|
333
|
1 |
|
comments = dict( |
|
334
|
|
|
operator='AND' if criteria.get('operator') is None else criteria.get('operator'), |
|
335
|
|
|
comment=description if criteria.get('comment') is None else criteria.get('comment'), |
|
336
|
|
|
node=[], |
|
337
|
|
|
) |
|
338
|
1 |
|
for criterion in criteria: |
|
339
|
1 |
|
if criterion.get('operator'): |
|
340
|
1 |
|
comments['node'].append( |
|
341
|
|
|
self.create_dict_form_criteria(criterion, None)) |
|
342
|
|
|
else: |
|
343
|
1 |
|
if criterion.get('definition_ref'): |
|
344
|
1 |
|
comments['node'].append( |
|
345
|
|
|
dict( |
|
346
|
|
|
extend_definition=criterion.get('definition_ref'), |
|
347
|
|
|
comment=criterion.get('comment'), |
|
348
|
|
|
)) |
|
349
|
|
|
else: |
|
350
|
1 |
|
comments['node'].append( |
|
351
|
|
|
dict( |
|
352
|
|
|
value_id=criterion.get('test_ref'), |
|
353
|
|
|
comment=criterion.get('comment'), |
|
354
|
|
|
)) |
|
355
|
1 |
|
return comments |
|
356
|
|
|
|
|
357
|
1 |
|
def _prepare_definition_comments(self): |
|
358
|
1 |
|
oval_definitions = self.root.find( |
|
359
|
|
|
'.//arf:report-requests/arf:report-request/' |
|
360
|
|
|
'arf:content/scap:data-stream-collection/' |
|
361
|
|
|
'scap:component/oval-definitions:oval_definitions/' |
|
362
|
|
|
'oval-definitions:definitions', ns) |
|
363
|
1 |
|
definitions = [] |
|
364
|
1 |
|
for definition in oval_definitions: |
|
365
|
1 |
|
comment_definition = dict( |
|
366
|
|
|
id=definition.get('id'), comment=None, node=[]) |
|
367
|
1 |
|
title = definition.find( |
|
368
|
|
|
'.//oval-definitions:metadata/oval-definitions:title', ns) |
|
369
|
1 |
|
description = definition.find( |
|
370
|
|
|
'.//oval-definitions:metadata/oval-definitions:description', ns) |
|
371
|
1 |
|
comment_definition['comment'] = title.text |
|
372
|
1 |
|
criteria = definition.find('.//oval-definitions:criteria', ns) |
|
373
|
1 |
|
comment_definition['node'].append( |
|
374
|
|
|
self.create_dict_form_criteria(criteria, description.text)) |
|
375
|
1 |
|
definitions.append(comment_definition) |
|
376
|
1 |
|
return definitions |
|
377
|
|
|
|
|
378
|
1 |
|
def recursive_help_fill_comments(self, comments, nodes): |
|
379
|
1 |
|
out = nodes |
|
380
|
1 |
|
out['comment'] = comments['comment'] |
|
381
|
1 |
|
for node, comment in zip(out['node'], comments['node']): |
|
382
|
1 |
|
node['comment'] = comment['comment'] |
|
383
|
1 |
|
if 'operator' in node: |
|
384
|
1 |
|
self.recursive_help_fill_comments(comment, node) |
|
385
|
|
|
|
|
386
|
1 |
|
def fill_comment(self, comment_definition, data_definition): |
|
387
|
1 |
|
comments = comment_definition['node'][0] |
|
388
|
1 |
|
nodes = data_definition['node'][0] |
|
389
|
1 |
|
data_definition['comment'] = comment_definition['comment'] |
|
390
|
1 |
|
self.recursive_help_fill_comments(comments, nodes) |
|
391
|
|
|
|
|
392
|
1 |
|
def insert_comments(self, data): |
|
393
|
1 |
|
comment_definitions = self._prepare_definition_comments() |
|
394
|
1 |
|
for data_definition in data['definitions']: |
|
395
|
1 |
|
for comment_definition in comment_definitions: |
|
396
|
1 |
|
if comment_definition['id'] == data_definition['id']: |
|
397
|
1 |
|
self.fill_comment(comment_definition, data_definition) |
|
398
|
|
|
|
|
399
|
1 |
|
def _get_key_for_element(self, element): |
|
400
|
1 |
|
return element.tag.split('}')[1] if '}' in element.tag else element.tag |
|
401
|
|
|
|
|
402
|
1 |
|
def _find_item_ref(self, object_): |
|
403
|
1 |
|
return list( |
|
404
|
|
|
filter( |
|
405
|
|
|
None, [ |
|
406
|
|
|
self._get_item_ref(item) for item in object_])) |
|
407
|
|
|
|
|
408
|
1 |
|
def _get_item_ref(self, item): |
|
409
|
1 |
|
return item.get('item_ref') if item.get('item_ref') else None |
|
410
|
|
|
|
|
411
|
1 |
|
def _get_unicate_key(self, key): |
|
412
|
1 |
|
return key + '@' + str(uuid.uuid4()) |
|
413
|
|
|
|
|
414
|
1 |
|
def _get_unicate_id_in_dict(self, object_, dict_): |
|
415
|
1 |
|
if self._get_key_for_element(object_) in dict_: |
|
416
|
1 |
|
return self._get_unicate_key(self._get_key_for_element(object_)) |
|
417
|
|
|
else: |
|
418
|
1 |
|
return self._get_key_for_element(object_) |
|
419
|
|
|
|
|
420
|
1 |
|
def _get_collected_objects_info(self, collected_object, object_): |
|
421
|
1 |
|
out = {} |
|
422
|
1 |
|
if len(collected_object) == 0: |
|
423
|
1 |
|
out[self._get_unicate_id_in_dict(object_, out) |
|
424
|
|
|
] = self._get_object_items(object_) |
|
425
|
|
|
else: |
|
426
|
1 |
|
item_refs = self._find_item_ref(collected_object) |
|
427
|
1 |
|
if item_refs: |
|
428
|
1 |
|
for item_id in item_refs: |
|
429
|
1 |
|
out[self._get_unicate_id_in_dict( |
|
430
|
|
|
object_, out)] = self._get_item(item_id) |
|
431
|
|
|
else: |
|
432
|
1 |
|
out[self._get_unicate_id_in_dict( |
|
433
|
|
|
object_, out)] = self._get_object_items(object_) |
|
434
|
1 |
|
return out |
|
435
|
|
|
|
|
436
|
1 |
|
def _xml_element_to_dict(self, object_, collected_object): |
|
437
|
1 |
|
result = {} |
|
438
|
1 |
|
if collected_object is not None: |
|
439
|
1 |
|
result[ |
|
440
|
|
|
collected_object.attrib.get('id') |
|
441
|
|
|
] = collected_object.attrib.get('flag') |
|
442
|
1 |
|
out = {} |
|
443
|
1 |
|
result.update( |
|
444
|
|
|
self._get_collected_objects_info(collected_object, object_)) |
|
445
|
|
|
else: |
|
446
|
1 |
|
result[object_.attrib.get('id')] = "does not exist" |
|
447
|
1 |
|
result[self._get_unicate_id_in_dict( |
|
448
|
|
|
object_, result)] = self._get_object_items(object_) |
|
449
|
1 |
|
return result |
|
450
|
|
|
|
|
451
|
1 |
|
def _get_object_items(self, object_): |
|
452
|
1 |
|
out = {} |
|
453
|
1 |
|
for element in object_.iterchildren(): |
|
454
|
1 |
|
if element.text and element.text.strip(): |
|
455
|
1 |
|
out[self._get_unicate_id_in_dict(element, out)] = element.text |
|
456
|
|
|
else: |
|
457
|
1 |
|
out[self._get_unicate_id_in_dict(element, out)] = "no value" |
|
458
|
1 |
|
return out |
|
459
|
|
|
|
|
460
|
1 |
|
def _get_item(self, item_ref): |
|
461
|
1 |
|
item = self._find_item_by_id(self.system_data, item_ref) |
|
462
|
1 |
|
out = {} |
|
463
|
1 |
|
for element in item.iterchildren(): |
|
464
|
1 |
|
if element.text and element.text.strip(): |
|
465
|
1 |
|
out[self._get_unicate_id_in_dict(element, out)] = element.text |
|
466
|
1 |
|
return out |
|
467
|
|
|
|
|
468
|
1 |
|
def _find_item_by_id(self, items, id): |
|
469
|
1 |
|
if id in items.keys(): |
|
470
|
1 |
|
return items[id] |
|
471
|
1 |
|
return None |
|
472
|
|
|
|
|
473
|
1 |
|
def _get_object_info(self, id_object): |
|
474
|
1 |
|
object_ = self._find_item_by_id(self.objects, id_object) |
|
475
|
1 |
|
object_collected = self._find_item_by_id( |
|
476
|
|
|
self.collected_objects, id_object) |
|
477
|
1 |
|
return self._xml_element_to_dict(object_, object_collected) |
|
478
|
|
|
|
|
479
|
1 |
|
def _get_tests_info(self): |
|
480
|
1 |
|
out = [] |
|
481
|
1 |
|
for test in self.tests: |
|
482
|
1 |
|
objects = [] |
|
483
|
1 |
|
for item in test: |
|
484
|
1 |
|
object_id = item.attrib.get('object_ref') |
|
485
|
1 |
|
if object_id: |
|
486
|
1 |
|
objects.append(self._get_object_info(object_id)) |
|
487
|
1 |
|
out.append( |
|
488
|
|
|
dict( |
|
489
|
|
|
id=test.attrib.get('id'), |
|
490
|
|
|
comment=test.attrib.get('comment'), |
|
491
|
|
|
objects=objects, |
|
492
|
|
|
)) |
|
493
|
1 |
|
return out |
|
494
|
|
|
|
|
495
|
1 |
|
def get_info_about_test(self, id): |
|
496
|
1 |
|
for test in self.tests_info: |
|
497
|
1 |
|
if test['id'] == id: |
|
498
|
|
|
return test |
|
499
|
|
|
|
OpenSCAP /
oval-graph
