Current File : //usr/share/crypto-policies/python/cryptopolicies/validation/scope.py
# SPDX-License-Identifier: LGPL-2.1-or-later
# Copyright (c) 2021 Red Hat, Inc.
import fnmatch
from .general import PolicySyntaxError
class ScopeSyntaxError(PolicySyntaxError):
pass
class ScopeUnknownError(ScopeSyntaxError):
def __init__(self, scope_glob):
super().__init__(f'unknown scope {scope_glob}')
class ScopeSelectorEmptyError(ScopeSyntaxError):
def __init__(self):
super().__init__('empty scope selector')
class ScopeSelectorIllegalCharacterError(ScopeSyntaxError):
def __init__(self, selector):
super().__init__(f'illegal character in scope selector `{selector}`')
class ScopeSelectorCurlyBracketsError(ScopeSyntaxError):
def __init__(self, pattern):
super().__init__(f'unsupported curly brackets usage in `{pattern}`')
class ScopeSelectorCommaError(ScopeSyntaxError):
def __init__(self, pattern):
super().__init__(f'unsupported comma usage in `{pattern}`')
class ScopeSelectorMatchedNothingError(ScopeSyntaxError):
def __init__(self, pattern):
super().__init__(f'scope selector `{pattern}` matches no scope')
def illegal_characters(p, original_pattern):
if not all(c.isalnum() or c in '{,}*_-' for c in p):
raise ScopeSelectorIllegalCharacterError(original_pattern)
def curly_brackets(p, original_pattern):
if ((p.count('{'), p.count('}')) not in [(0, 0), (1, 1)]
or p.startswith('{') and not p.endswith('}')
or not p.startswith('{') and p.endswith('}')):
raise ScopeSelectorCurlyBracketsError(original_pattern)
def resulting_globs(globs, all_scopes, original_pattern):
if any(',' in g for g in globs):
raise ScopeSelectorCommaError(original_pattern)
for g in globs:
if not g:
raise ScopeSelectorEmptyError()
if not fnmatch.filter(all_scopes, g):
if '*' in g:
raise ScopeSelectorMatchedNothingError(g)
raise ScopeUnknownError(g)
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