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1
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""" |
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2
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Function for evaluate OVAL operators. |
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3
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""" |
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4
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5
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6
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1 |
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def oval_operator_and(result): |
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7
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""" |
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8
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The AND operator produces a true result if every argument is true. If one or more arguments |
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9
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are false, the result of the AND is false. If one or more of the arguments are unknown, and |
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10
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if none of the arguments are false, then the AND operator produces a result of unknown. |
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11
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""" |
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12
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1 |
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out_result = None |
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13
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1 |
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if eq_zero(result, 'false_cnt')\ |
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14
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and greater_zero(result, 'true_cnt')\ |
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15
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and error_unknown_noteval_eq_zero(result): |
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16
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1 |
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out_result = 'true' |
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17
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1 |
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elif greater_zero(result, 'false_cnt'): |
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18
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1 |
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out_result = 'false' |
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19
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else: |
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20
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1 |
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out_result = error_unknown_noteval_for_operators_and_or(result, 'and') |
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21
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1 |
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return out_result |
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22
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23
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24
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1 |
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def oval_operator_one(result): |
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""" |
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The ONE operator produces a true result if one and only one argument is true. If there are |
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27
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more than argument is true (or if there are no true arguments), the result of the ONE |
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is false. If one or more of the arguments are unknown, then the ONE operator produces |
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29
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a result of unknown. |
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""" |
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1 |
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out_result = None |
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32
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1 |
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if one_is_true(result): |
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33
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1 |
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out_result = 'true' |
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34
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1 |
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elif one_is_false(result) or one_is_false1(result): |
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1 |
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out_result = 'false' |
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36
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1 |
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elif one_is_error(result): |
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1 |
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out_result = 'error' |
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38
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1 |
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elif one_is_unknown(result): |
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39
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1 |
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out_result = 'unknown' |
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40
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1 |
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elif one_is_noteval(result): |
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41
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1 |
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out_result = 'noteval' |
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42
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else: |
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43
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1 |
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out_result = None |
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44
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1 |
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return out_result |
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45
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46
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47
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1 |
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def oval_operator_or(result): |
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48
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""" |
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49
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The OR operator produces a true result if one or more arguments is true. If every argument |
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50
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is false, the result of the OR is false. If one or more of the arguments are unknown and |
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51
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if none of arguments are true, then the OR operator produces a result of unknown. |
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52
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""" |
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53
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1 |
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out_result = None |
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54
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1 |
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if greater_zero(result, 'true_cnt'): |
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1 |
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out_result = 'true' |
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56
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1 |
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elif eq_zero(result, 'true_cnt')\ |
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57
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and greater_zero(result, 'false_cnt')\ |
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58
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and error_unknown_noteval_eq_zero(result): |
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59
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1 |
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out_result = 'false' |
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60
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else: |
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61
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1 |
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out_result = error_unknown_noteval_for_operators_and_or(result, 'or') |
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62
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1 |
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return out_result |
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63
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64
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65
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1 |
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def oval_operator_xor(result): |
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""" |
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XOR is defined to be true if an odd number of its arguments are true, and false otherwise. |
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If any of the arguments are unknown, then the XOR operator produces a result of unknown. |
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""" |
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70
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1 |
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out_result = None |
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71
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1 |
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if (result['true_cnt'] % 2) == 1\ |
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72
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and eq_zero_unknown_noteval_notappl(result): |
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73
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1 |
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out_result = 'true' |
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1 |
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elif (result['true_cnt'] % 2) == 0\ |
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75
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and eq_zero_unknown_noteval_notappl(result): |
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1 |
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out_result = 'false' |
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77
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1 |
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elif greater_zero(result, 'error_cnt'): |
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78
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1 |
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out_result = 'error' |
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79
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1 |
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elif eq_zero(result, 'error_cnt')\ |
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80
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and greater_zero(result, 'unknown_cnt'): |
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81
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1 |
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out_result = 'unknown' |
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82
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1 |
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elif eq_zero(result, 'error_cnt')\ |
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83
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and eq_zero(result, 'unknown_cnt')\ |
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84
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and greater_zero(result, 'noteval_cnt'): |
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85
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1 |
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out_result = 'noteval' |
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86
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else: |
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87
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1 |
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out_result = None |
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88
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1 |
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return out_result |
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89
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90
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91
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1 |
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def error_unknown_noteval_for_operators_and_or(result, operator): |
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92
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1 |
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out_result = None |
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93
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1 |
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value_for_check = 'false_cnt' if operator == 'and' else 'true_cnt' |
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94
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1 |
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if eq_zero(result, value_for_check)\ |
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95
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and greater_zero(result, 'error_cnt'): |
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96
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1 |
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out_result = 'error' |
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97
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1 |
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elif eq_zero(result, value_for_check)\ |
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98
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and error_unknown_eq_zero(result): |
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99
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1 |
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out_result = 'unknown' |
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100
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1 |
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elif eq_zero(result, value_for_check)\ |
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101
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and error_unknown_eq_noteval_greater_zero(result): |
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102
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1 |
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out_result = 'noteval' |
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103
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else: |
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104
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1 |
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out_result = None |
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105
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1 |
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return out_result |
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106
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107
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108
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1 |
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def eq_zero(result, cnt): |
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109
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1 |
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return result[cnt] == 0 |
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110
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111
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112
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1 |
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def eq_zero_duo(result, cnt0, cnt1): |
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113
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1 |
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return result[cnt0] == 0 and result[cnt1] == 0 |
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114
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115
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116
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1 |
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def greater_zero(result, cnt): |
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117
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1 |
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return result[cnt] > 0 |
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118
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119
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120
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1 |
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def eq_or_greater_zero(result, cnt): |
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121
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1 |
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return result[cnt] >= 0 |
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122
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123
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124
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1 |
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def eq_or_greater_zero_duo(result, cnt0, cnt1): |
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125
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1 |
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return result[cnt0] >= 0 and result[cnt1] >= 0 |
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126
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127
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128
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1 |
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def smaller_than_two(result, cnt): |
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129
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1 |
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return result[cnt] < 2 |
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130
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131
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132
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1 |
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def one_is_noteval(result): |
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133
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1 |
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return (smaller_than_two(result, 'true_cnt') |
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134
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and eq_or_greater_zero_duo(result, 'false_cnt', 'notappl_cnt') |
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135
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and eq_zero_duo(result, 'error_cnt', 'unknown_cnt') |
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136
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and greater_zero(result, 'noteval_cnt')) |
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137
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138
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139
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1 |
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def one_is_unknown(result): |
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140
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1 |
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return (smaller_than_two(result, 'true_cnt') |
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141
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and eq_or_greater_zero(result, 'false_cnt') |
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142
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and eq_zero(result, 'error_cnt') |
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143
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and result['unknown_cnt'] >= 1 |
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144
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and eq_or_greater_zero_duo(result, 'noteval_cnt', 'notappl_cnt')) |
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145
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146
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147
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1 |
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def one_is_error(result): |
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148
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1 |
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return (smaller_than_two(result, 'true_cnt') |
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149
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and eq_or_greater_zero(result, 'false_cnt') |
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150
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and greater_zero(result, 'error_cnt') |
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151
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and eq_or_greater_zero_unknown_noteval_notappl(result)) |
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152
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153
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154
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1 |
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def one_is_false(result): |
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155
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1 |
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return (eq_zero(result, 'true_cnt') |
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156
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and eq_or_greater_zero(result, 'false_cnt') |
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157
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and error_unknown_noteval_eq_zero(result) |
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158
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and result['notappl_cnt'] >= 0) |
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159
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160
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161
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1 |
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def one_is_false1(result): |
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162
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1 |
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return (result['true_cnt'] >= 2 |
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163
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and eq_or_greater_zero_duo(result, 'false_cnt', 'error_cnt') |
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164
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and eq_or_greater_zero_unknown_noteval_notappl(result)) |
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165
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166
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167
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1 |
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def one_is_true(result): |
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168
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1 |
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return (result['true_cnt'] == 1 |
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169
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and eq_or_greater_zero_duo(result, 'false_cnt', 'notappl_cnt') |
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170
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and error_unknown_noteval_eq_zero(result)) |
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171
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172
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173
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1 |
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def eq_or_greater_zero_unknown_noteval_notappl(result): |
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174
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1 |
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return (eq_or_greater_zero(result, 'unknown_cnt') |
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175
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and eq_or_greater_zero(result, 'noteval_cnt') |
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176
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and eq_or_greater_zero(result, 'notappl_cnt')) |
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177
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178
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179
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1 |
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def eq_zero_unknown_noteval_notappl(result): |
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180
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1 |
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return (eq_zero(result, 'error_cnt') |
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181
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and eq_zero(result, 'unknown_cnt') |
|
182
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and eq_zero(result, 'noteval_cnt')) |
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183
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184
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185
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1 |
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def error_unknown_noteval_eq_zero(result): |
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186
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1 |
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return (eq_zero(result, 'error_cnt') |
|
187
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and eq_zero(result, 'unknown_cnt') |
|
188
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and eq_zero(result, 'noteval_cnt')) |
|
189
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|
190
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|
191
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1 |
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def error_unknown_eq_noteval_greater_zero(result): |
|
192
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1 |
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return (eq_zero(result, 'error_cnt') |
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193
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and eq_zero(result, 'unknown_cnt') |
|
194
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and greater_zero(result, 'noteval_cnt')) |
|
195
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196
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|
197
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1 |
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def error_unknown_eq_zero(result): |
|
198
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1 |
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return (eq_zero(result, 'error_cnt') |
|
199
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and greater_zero(result, 'unknown_cnt')) |
|
200
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|
201
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|
202
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1 |
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def is_notapp_result(result): |
|
203
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1 |
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return (result['notappl_cnt'] > 0 |
|
204
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and eq_zero(result, 'false_cnt') |
|
205
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and error_unknown_noteval_eq_zero(result) |
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206
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and eq_zero(result, 'true_cnt')) |
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207
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OpenSCAP /
oval-graph
