This file is indexed.

/usr/lib/python3/dist-packages/josepy/util.py is in python3-josepy 1.1.0-2~deb9u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
"""JOSE utilities."""
import collections

import OpenSSL
import six
from cryptography.hazmat.primitives.asymmetric import rsa


class abstractclassmethod(classmethod):
    # pylint: disable=invalid-name,too-few-public-methods
    """Descriptor for an abstract classmethod.

    It augments the :mod:`abc` framework with an abstract
    classmethod. This is implemented as :class:`abc.abstractclassmethod`
    in the standard Python library starting with version 3.2.

    This particular implementation, allegedly based on Python 3.3 source
    code, is stolen from
    http://stackoverflow.com/questions/11217878/python-2-7-combine-abc-abstractmethod-and-classmethod.

    """
    __isabstractmethod__ = True

    def __init__(self, target):
        target.__isabstractmethod__ = True
        super(abstractclassmethod, self).__init__(target)


class ComparableX509(object):  # pylint: disable=too-few-public-methods
    """Wrapper for OpenSSL.crypto.X509** objects that supports __eq__.

    :ivar wrapped: Wrapped certificate or certificate request.
    :type wrapped: `OpenSSL.crypto.X509` or `OpenSSL.crypto.X509Req`.

    """
    def __init__(self, wrapped):
        assert isinstance(wrapped, OpenSSL.crypto.X509) or isinstance(
            wrapped, OpenSSL.crypto.X509Req)
        self.wrapped = wrapped

    def __getattr__(self, name):
        return getattr(self.wrapped, name)

    def _dump(self, filetype=OpenSSL.crypto.FILETYPE_ASN1):
        """Dumps the object into a buffer with the specified encoding.

        :param int filetype: The desired encoding. Should be one of
            `OpenSSL.crypto.FILETYPE_ASN1`,
            `OpenSSL.crypto.FILETYPE_PEM`, or
            `OpenSSL.crypto.FILETYPE_TEXT`.

        :returns: Encoded X509 object.
        :rtype: str

        """
        if isinstance(self.wrapped, OpenSSL.crypto.X509):
            func = OpenSSL.crypto.dump_certificate
        else:  # assert in __init__ makes sure this is X509Req
            func = OpenSSL.crypto.dump_certificate_request
        return func(filetype, self.wrapped)

    def __eq__(self, other):
        if not isinstance(other, self.__class__):
            return NotImplemented
        # pylint: disable=protected-access
        return self._dump() == other._dump()

    def __hash__(self):
        return hash((self.__class__, self._dump()))

    def __ne__(self, other):
        return not self == other

    def __repr__(self):
        return '<{0}({1!r})>'.format(self.__class__.__name__, self.wrapped)


class ComparableKey(object):  # pylint: disable=too-few-public-methods
    """Comparable wrapper for ``cryptography`` keys.

    See https://github.com/pyca/cryptography/issues/2122.

    """
    __hash__ = NotImplemented

    def __init__(self, wrapped):
        self._wrapped = wrapped

    def __getattr__(self, name):
        return getattr(self._wrapped, name)

    def __eq__(self, other):
        # pylint: disable=protected-access
        if (not isinstance(other, self.__class__) or
                self._wrapped.__class__ is not other._wrapped.__class__):
            return NotImplemented
        elif hasattr(self._wrapped, 'private_numbers'):
            return self.private_numbers() == other.private_numbers()
        elif hasattr(self._wrapped, 'public_numbers'):
            return self.public_numbers() == other.public_numbers()
        else:
            return NotImplemented

    def __ne__(self, other):
        return not self == other

    def __repr__(self):
        return '<{0}({1!r})>'.format(self.__class__.__name__, self._wrapped)

    def public_key(self):
        """Get wrapped public key."""
        return self.__class__(self._wrapped.public_key())


class ComparableRSAKey(ComparableKey):  # pylint: disable=too-few-public-methods
    """Wrapper for ``cryptography`` RSA keys.

    Wraps around:

    - :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPrivateKey`
    - :class:`~cryptography.hazmat.primitives.asymmetric.rsa.RSAPublicKey`

    """

    def __hash__(self):
        # public_numbers() hasn't got stable hash!
        # https://github.com/pyca/cryptography/issues/2143
        if isinstance(self._wrapped, rsa.RSAPrivateKeyWithSerialization):
            priv = self.private_numbers()
            pub = priv.public_numbers
            return hash((self.__class__, priv.p, priv.q, priv.dmp1,
                         priv.dmq1, priv.iqmp, pub.n, pub.e))
        elif isinstance(self._wrapped, rsa.RSAPublicKeyWithSerialization):
            pub = self.public_numbers()
            return hash((self.__class__, pub.n, pub.e))


class ImmutableMap(collections.Mapping, collections.Hashable):  # type: ignore
    # pylint: disable=too-few-public-methods
    """Immutable key to value mapping with attribute access."""

    __slots__ = ()
    """Must be overridden in subclasses."""

    def __init__(self, **kwargs):
        if set(kwargs) != set(self.__slots__):
            raise TypeError(
                '__init__() takes exactly the following arguments: {0} '
                '({1} given)'.format(', '.join(self.__slots__),
                                     ', '.join(kwargs) if kwargs else 'none'))
        for slot in self.__slots__:
            object.__setattr__(self, slot, kwargs.pop(slot))

    def update(self, **kwargs):
        """Return updated map."""
        items = dict(self)
        items.update(kwargs)
        return type(self)(**items)  # pylint: disable=star-args

    def __getitem__(self, key):
        try:
            return getattr(self, key)
        except AttributeError:
            raise KeyError(key)

    def __iter__(self):
        return iter(self.__slots__)

    def __len__(self):
        return len(self.__slots__)

    def __hash__(self):
        return hash(tuple(getattr(self, slot) for slot in self.__slots__))

    def __setattr__(self, name, value):
        raise AttributeError("can't set attribute")

    def __repr__(self):
        return '{0}({1})'.format(self.__class__.__name__, ', '.join(
            '{0}={1!r}'.format(key, value)
            for key, value in six.iteritems(self)))


class frozendict(collections.Mapping, collections.Hashable):  # type: ignore
    # pylint: disable=invalid-name,too-few-public-methods
    """Frozen dictionary."""
    __slots__ = ('_items', '_keys')

    def __init__(self, *args, **kwargs):
        if kwargs and not args:
            items = dict(kwargs)
        elif len(args) == 1 and isinstance(args[0], collections.Mapping):
            items = args[0]
        else:
            raise TypeError()
        # TODO: support generators/iterators

        object.__setattr__(self, '_items', items)
        object.__setattr__(self, '_keys', tuple(sorted(six.iterkeys(items))))

    def __getitem__(self, key):
        return self._items[key]

    def __iter__(self):
        return iter(self._keys)

    def __len__(self):
        return len(self._items)

    def _sorted_items(self):
        return tuple((key, self[key]) for key in self._keys)

    def __hash__(self):
        return hash(self._sorted_items())

    def __getattr__(self, name):
        try:
            return self._items[name]
        except KeyError:
            raise AttributeError(name)

    def __setattr__(self, name, value):
        raise AttributeError("can't set attribute")

    def __repr__(self):
        return 'frozendict({0})'.format(', '.join('{0}={1!r}'.format(
            key, value) for key, value in self._sorted_items()))