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json_util.cpython-310.pyc
o h9RaG @ s d Z ddlZddlZddlZddlmZmZmZmZm Z m Z m Z ddl m Z ddlZddlmZmZmZmZ eeZ d1deded ed eegef d eegef d ef d dZG dd dZG dd deZG dd dej Z G dd dej ej e dZ de!d efddZ"d2dede e# d ed e!fd d Z$d e!d efd d!Z%d2d ede e# d ed e!fd"d#Z&d$ejj'd efd%d&Z(d'ed ejj'fd(d)Z)d*ejj'd efd+d,Z*d'ed ejj'fd-d.Z+G d/d0 d0e Z,dS )3zJSON (de)serialization framework. The framework presented here is somewhat based on `Go's "json" package`_ (especially the ``omitempty`` functionality). .. _`Go's "json" package`: http://golang.org/pkg/encoding/json/ N)DictTypeAnyCallableListMappingOptional)crypto)b64errors interfacesutilF json_namedefault omitemptydecoderencoderreturnc C s t | ||||dS )a4 Convenient function to declare a :class:`Field` with proper type annotations. This function allows to write the following code: import josepy class JSON(josepy.JSONObjectWithFields): typ: str = josepy.field('type') def other_type(self) -> str: return self.typ r r r r r ) _TypedFieldr r 2/usr/lib/python3/dist-packages/josepy/json_util.pyfield s r c @ s e Zd ZdZdZ d#dedededeegef d eegef d df d d Z e d ed efddZ d ed efddZ ded d fddZ deegef d d fddZdeegef d d fddZd ed efdd Zd ed efd d Ze d ed efd d Ze d ed efd!d"ZdS )$Fielda JSON object field. :class:`Field` is meant to be used together with :class:`JSONObjectWithFields`. ``encoder`` (``decoder``) is a callable that accepts a single parameter, i.e. a value to be encoded (decoded), and returns the serialized (deserialized) value. In case of errors it should raise :class:`~josepy.errors.SerializationError` (:class:`~josepy.errors.DeserializationError`). Note, that ``decoder`` should perform partial serialization only. :ivar str json_name: Name of the field when encoded to JSON. :ivar default: Default value (used when not present in JSON object). :ivar bool omitempty: If ``True`` and the field value is empty, then it will not be included in the serialized JSON object, and ``default`` will be used for deserialization. Otherwise, if ``False``, field is considered as required, value will always be included in the serialized JSON objected, and it must also be present when deserializing. )r r r fdecfencNFr r r r r r c C sD || _ || _|| _|d u r| jn|| _|d u r | j| _d S || _d S N)r r r default_decoderr default_encoderr )selfr r r r r r r r __init__B s zField.__init__valuec C s t |t o| S )zIs the provided value considered "empty" for this field? This is useful for subclasses that might want to override the definition of being empty, e.g. for some more exotic data types. ) isinstanceboolclsr! r r r _emptyM s z Field._emptyc C s | |o| jS )zOmit the value in output?)r& r r r! r r r omitW s z Field.omitkwargsc K s0 | j | j| j| j| jd|}t| di |S )Nr r )r r r r r type)r r) currentr r r _update_params[ s zField._update_paramsr c C | j |dS )z6Descriptor to change the decoder on JSON object field.)r r, )r r r r r r f z Field.decoderr c C r- )z6Descriptor to change the encoder on JSON object field.)r r. )r r r r r r j r/ z Field.encoderc C | |S )z4Decode a value, optionally with context JSON object.)r r' r r r decoden z Field.decodec C r0 )z4Encode a value, optionally with context JSON object.)r r' r r r encoder r2 z Field.encodec sJ t |trt fdd|D S t |tr#t fdd| D S |S )zDefault decoder. Recursively deserialize into immutable types ( :class:`josepy.util.frozendict` instead of :func:`dict`, :func:`tuple` instead of :func:`list`). c 3 s | ]} |V qd S r r ).0subvaluer% r r <genexpr> s z(Field.default_decoder.<locals>.<genexpr>c s" i | ] \}} | |qS r r4 )r5 keyr! r7 r r <dictcomp> s z)Field.default_decoder.<locals>.<dictcomp>)r" listtupledictr frozendictitemsr$ r r7 r r v s zField.default_decoderc C s |S )z Default (passthrough) encoder.r r$ r r r r s zField.default_encoderNFNN)__name__ __module__ __qualname____doc__ __slots__strr r# r r classmethodr& r( r, r r r1 r3 r r r r r r r ( s2 r c @ s e Zd ZdZdS )r a Specialized class to mark a JSON object field with typed annotations. This class is kept private because fields are supposed to be declared using the :function:`field` in this situation. In the future the :class:`Field` may be removed in favor of this one.N)rA rB rC rD r r r r r s r c @ sL e Zd ZU dZi Zeeef ed< dede e deee f dd fddZ d S ) JSONObjectWithFieldsMetaa Metaclass for :class:`JSONObjectWithFields` and its subclasses. It makes sure that, for any class ``cls`` with ``__metaclass__`` set to ``JSONObjectWithFieldsMeta``: 1. All fields (attributes of type :class:`Field`) in the class definition are moved to the ``cls._fields`` dictionary, where keys are field attribute names and values are fields themselves. 2. ``cls.__slots__`` is extended by all field attribute names (i.e. not :attr:`Field.json_name`). Original ``cls.__slots__`` are stored in ``cls._orig_slots``. In a consequence, for a field attribute name ``some_field``, ``cls.some_field`` will be a slot descriptor and not an instance of :class:`Field`. For example:: some_field = Field('someField', default=()) class Foo: __metaclass__ = JSONObjectWithFieldsMeta __slots__ = ('baz',) some_field = some_field assert Foo.__slots__ == ('some_field', 'baz') assert Foo._orig_slots == () assert Foo.some_field is not Field assert Foo._fields.keys() == ['some_field'] assert Foo._fields['some_field'] is some_field As an implementation note, this metaclass inherits from :class:`abc.ABCMeta` (and not the usual :class:`type`) to mitigate the metaclass conflict (:class:`ImmutableMap` and :class:`JSONDeSerializable`, parents of :class:`JSONObjectWithFields`, use :class:`abc.ABCMeta` as its metaclass). _fieldsnamebases namespacer c C s i }|D ] }| t|di q| D ](\}}t|tr>t|tr7||di vr7td| d| d| |||< q|dd|d< t t |d t | |d< ||d< t j| |||S ) NrI __annotations__zField `z` in JSONObject `z` has no type annotation.rE r _orig_slots)updategetattrcopyr? r" r r get ValueErrorpopr< r; keysabcABCMeta__new__)mcsrJ rK rL fieldsbaser9 r! r r r rX s$ z JSONObjectWithFieldsMeta.__new__N) rA rB rC rD rI r rF r rM r r rX r r r r rH s ' rH c s e Zd ZdZedeeef fddZdeddf fdd Z d edefd d Z deeef fd d Z deeef fddZ ede eef ddfddZede eef defddZedeeef dd fddZ ZS )JSONObjectWithFieldsa JSON object with fields. Example:: class Foo(JSONObjectWithFields): bar = Field('Bar') empty = Field('Empty', omitempty=True) @bar.encoder def bar(value): return value + 'bar' @bar.decoder def bar(value): if not value.endswith('bar'): raise errors.DeserializationError('No bar suffix!') return value[:-3] assert Foo(bar='baz').to_partial_json() == {'Bar': 'bazbar'} assert Foo.from_json({'Bar': 'bazbar'}) == Foo(bar='baz') assert (Foo.from_json({'Bar': 'bazbar', 'Empty': '!'}) == Foo(bar='baz', empty='!')) assert Foo(bar='baz').bar == 'baz' r c C s dd | j D S )zGet default fields values.c S s i | ]\}}||j qS r )r )r5 slotr r r r r: s z2JSONObjectWithFields._defaults.<locals>.<dictcomp>)rI r? r7 r r r _defaults s z JSONObjectWithFields._defaultsr) Nc s" t jdi i | | d S Nr )superr r^ )r r) __class__r r r s z JSONObjectWithFields.__init__rJ c C s> z| j | }W n ty td|w |t| |S )zEncode a single field. :param str name: Name of the field to be encoded. :raises errors.SerializationError: if field cannot be serialized :raises errors.Error: if field could not be found zField not found: {0})rI KeyErrorr Errorformatr3 rP )r rJ r r r r r3 s zJSONObjectWithFields.encodec C s i }t }| j D ]7\}}t| |}||r |||f q z ||||j< W q tj yA } z t d |||d}~ww |S )zSerialize fields to JSON.z Could not encode {0} ({1}): {2}N) setrI r? rP r( addr3 r r SerializationErrorre )r jobjomittedr] r r! errorr r r fields_to_partial_json s" z+JSONObjectWithFields.fields_to_partial_jsonc C s | S r )rl )r r r r to_partial_json) s z$JSONObjectWithFields.to_partial_jsonri c C sT t }| j D ]\}}|js|j|vr||j q|r(tdd |d S )Nz&The following fields are required: {0},) rf rI r? r r rg r DeserializationErrorre join)r% ri missing_r r r r _check_required, s z$JSONObjectWithFields._check_requiredc C s | | i }| j D ]7\}}|j|vr |jr |j||< q ||j }z ||||< W q tjyC } z td |||d}~ww |S )z Deserialize fields from JSON.z#Could not decode {0!r} ({1!r}): {2}N) rs rI r? r r r r1 r ro re )r% ri rZ r] r r! rk r r r fields_from_json8 s" z%JSONObjectWithFields.fields_from_jsonc C s | di | |S r_ )rt )r% ri r r r from_jsonJ s z JSONObjectWithFields.from_json)rA rB rC rD rG r rF r r^ r r3 rl rm r rs rt ru __classcell__r r ra r r\ s $r\ ) metaclassdatac C s t | dS )zJEncode JOSE Base-64 field. :param bytes data: :rtype: `str` ascii)r b64encoder1 )rx r r r encode_b64joseO s r{ sizeminimumc C st z t | }W n tjy } zt|d}~ww |dur8|s(t||ks0|r8t||k r8td||S )a Decode JOSE Base-64 field. :param unicode data: :param int size: Required length (after decoding). :param bool minimum: If ``True``, then `size` will be treated as minimum required length, as opposed to exact equality. :rtype: bytes Nz&Expected at least or exactly {0} bytes) r b64decoder3 binasciird r ro lenre )rx r| r} decodedrk r r r decode_b64joseZ s r r! c C s t | S )z;Hexlify. :param bytes value: :rtype: unicode )r hexlifyr1 )r! r r r encode_hex16r s r c C sr | }|dur |st||d ks |r t||d k r t zt|W S tjy8 } zt|d}~ww )a Decode hexlified field. :param unicode value: :param int size: Required length (after decoding). :param bool minimum: If ``True``, then `size` will be treated as minimum required length, as opposed to exact equality. :rtype: bytes N )r3 r r ro r unhexlifyrd )r! r| r} value_brk r r r decode_hex16| s r certc C * t | jtjr tdtttj| jS )zEncode certificate as JOSE Base-64 DER. :type cert: `OpenSSL.crypto.X509` wrapped in `.ComparableX509` :rtype: unicode z.Error input is actually a certificate request.)r" wrappedr X509ReqrS r{ dump_certificate FILETYPE_ASN1)r r r r encode_cert r b64derc C @ z t ttjt| W S tjy } zt|d}~ww )zDecode JOSE Base-64 DER-encoded certificate. :param unicode b64der: :rtype: `OpenSSL.crypto.X509` wrapped in `.ComparableX509` N) r ComparableX509r load_certificater r rd r ro r rk r r r decode_cert r csrc C r )zEncode CSR as JOSE Base-64 DER. :type csr: `OpenSSL.crypto.X509Req` wrapped in `.ComparableX509` :rtype: unicode z&Error input is actually a certificate.)r" r r X509rS r{ dump_certificate_requestr )r r r r encode_csr r r c C r )zDecode JOSE Base-64 DER-encoded CSR. :param unicode b64der: :rtype: `OpenSSL.crypto.X509Req` wrapped in `.ComparableX509` N) r r r load_certificate_requestr r rd r ro r r r r decode_csr r r c @ s e Zd ZU dZeZeed< dZeed< eZ e ee f ed< e dde d de e de d fd d Ze d eeef de d fd d Zde eef fddZe d eeef dd fddZdS )TypedJSONObjectWithFieldszJSON object with type.typr* type_field_nameTYPESNtype_clsr c C s |du r|j n|}|| j|< |S )z(Register class for JSON deserialization.N)r r )r% r r r r r register s z"TypedJSONObjectWithFields.registerri c C s | | j v r| j|vrtd| j| S t|ts$td|z|| j }W n ty7 tdw z| j | W S tyK t ||w )z&Get the registered class for ``jobj``.zMissing type field ({0})z {0} is not a dictionary objectzmissing type field) r valuesr r ro re r" r= rc UnrecognizedTypeError)r% ri r r r r get_type_cls s( z&TypedJSONObjectWithFields.get_type_clsc C s | }| j|| j< |S )a Get JSON serializable object. :returns: Serializable JSON object representing ACME typed object. :meth:`validate` will almost certainly not work, due to reasons explained in :class:`josepy.interfaces.IJSONSerializable`. :rtype: dict )rl r r )r ri r r r rm s z)TypedJSONObjectWithFields.to_partial_jsonc C s | |}|di ||S )zDeserialize ACME object from valid JSON object. :raises josepy.errors.UnrecognizedTypeError: if type of the ACME object has not been registered. Nr )r rt )r% ri r r r r ru s z#TypedJSONObjectWithFields.from_jsonr )rA rB rC rD NotImplementedr rF rM r r r r rG r r r r r rm ru r r r r r s( r r@ )NF)-rD rV r loggingtypingr r r r r r r OpenSSLr josepy.utiljosepyr r r r getLoggerrA loggerrF r# r r r rW rH ImmutableMapJSONDeSerializabler\ bytesr{ intr r r r r r r r r r r r r <module> sD $ i Dq