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Diffstat (limited to '.venv/lib/python3.12/site-packages/pyasn1/type')
12 files changed, 6543 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/__init__.py b/.venv/lib/python3.12/site-packages/pyasn1/type/__init__.py new file mode 100644 index 00000000..8c3066b2 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/__init__.py @@ -0,0 +1 @@ +# This file is necessary to make this directory a package. diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/base.py b/.venv/lib/python3.12/site-packages/pyasn1/type/base.py new file mode 100644 index 00000000..aa86e520 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/base.py @@ -0,0 +1,699 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +import sys + +from pyasn1 import error +from pyasn1.type import constraint +from pyasn1.type import tag +from pyasn1.type import tagmap + +__all__ = ['Asn1Item', 'Asn1Type', 'SimpleAsn1Type', + 'ConstructedAsn1Type'] + + +class Asn1Item(object): + @classmethod + def getTypeId(cls, increment=1): + try: + Asn1Item._typeCounter += increment + except AttributeError: + Asn1Item._typeCounter = increment + return Asn1Item._typeCounter + + +class Asn1Type(Asn1Item): + """Base class for all classes representing ASN.1 types. + + In the user code, |ASN.1| class is normally used only for telling + ASN.1 objects from others. + + Note + ---- + For as long as ASN.1 is concerned, a way to compare ASN.1 types + is to use :meth:`isSameTypeWith` and :meth:`isSuperTypeOf` methods. + """ + #: Set or return a :py:class:`~pyasn1.type.tag.TagSet` object representing + #: ASN.1 tag(s) associated with |ASN.1| type. + tagSet = tag.TagSet() + + #: Default :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + #: object imposing constraints on initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Disambiguation ASN.1 types identification + typeId = None + + def __init__(self, **kwargs): + readOnly = { + 'tagSet': self.tagSet, + 'subtypeSpec': self.subtypeSpec + } + + readOnly.update(kwargs) + + self.__dict__.update(readOnly) + + self._readOnly = readOnly + + def __setattr__(self, name, value): + if name[0] != '_' and name in self._readOnly: + raise error.PyAsn1Error('read-only instance attribute "%s"' % name) + + self.__dict__[name] = value + + def __str__(self): + return self.prettyPrint() + + @property + def readOnly(self): + return self._readOnly + + @property + def effectiveTagSet(self): + """For |ASN.1| type is equivalent to *tagSet* + """ + return self.tagSet # used by untagged types + + @property + def tagMap(self): + """Return a :class:`~pyasn1.type.tagmap.TagMap` object mapping ASN.1 tags to ASN.1 objects within callee object. + """ + return tagmap.TagMap({self.tagSet: self}) + + def isSameTypeWith(self, other, matchTags=True, matchConstraints=True): + """Examine |ASN.1| type for equality with other ASN.1 type. + + ASN.1 tags (:py:mod:`~pyasn1.type.tag`) and constraints + (:py:mod:`~pyasn1.type.constraint`) are examined when carrying + out ASN.1 types comparison. + + Python class inheritance relationship is NOT considered. + + Parameters + ---------- + other: a pyasn1 type object + Class instance representing ASN.1 type. + + Returns + ------- + : :class:`bool` + :obj:`True` if *other* is |ASN.1| type, + :obj:`False` otherwise. + """ + return (self is other or + (not matchTags or self.tagSet == other.tagSet) and + (not matchConstraints or self.subtypeSpec == other.subtypeSpec)) + + def isSuperTypeOf(self, other, matchTags=True, matchConstraints=True): + """Examine |ASN.1| type for subtype relationship with other ASN.1 type. + + ASN.1 tags (:py:mod:`~pyasn1.type.tag`) and constraints + (:py:mod:`~pyasn1.type.constraint`) are examined when carrying + out ASN.1 types comparison. + + Python class inheritance relationship is NOT considered. + + Parameters + ---------- + other: a pyasn1 type object + Class instance representing ASN.1 type. + + Returns + ------- + : :class:`bool` + :obj:`True` if *other* is a subtype of |ASN.1| type, + :obj:`False` otherwise. + """ + return (not matchTags or + (self.tagSet.isSuperTagSetOf(other.tagSet)) and + (not matchConstraints or self.subtypeSpec.isSuperTypeOf(other.subtypeSpec))) + + @staticmethod + def isNoValue(*values): + for value in values: + if value is not noValue: + return False + return True + + def prettyPrint(self, scope=0): + raise NotImplementedError + + # backward compatibility + + def getTagSet(self): + return self.tagSet + + def getEffectiveTagSet(self): + return self.effectiveTagSet + + def getTagMap(self): + return self.tagMap + + def getSubtypeSpec(self): + return self.subtypeSpec + + # backward compatibility + def hasValue(self): + return self.isValue + +# Backward compatibility +Asn1ItemBase = Asn1Type + + +class NoValue(object): + """Create a singleton instance of NoValue class. + + The *NoValue* sentinel object represents an instance of ASN.1 schema + object as opposed to ASN.1 value object. + + Only ASN.1 schema-related operations can be performed on ASN.1 + schema objects. + + Warning + ------- + Any operation attempted on the *noValue* object will raise the + *PyAsn1Error* exception. + """ + skipMethods = { + '__slots__', + # attributes + '__getattribute__', + '__getattr__', + '__setattr__', + '__delattr__', + # class instance + '__class__', + '__init__', + '__del__', + '__new__', + '__repr__', + '__qualname__', + '__objclass__', + 'im_class', + '__sizeof__', + # pickle protocol + '__reduce__', + '__reduce_ex__', + '__getnewargs__', + '__getinitargs__', + '__getstate__', + '__setstate__', + } + + _instance = None + + def __new__(cls): + if cls._instance is None: + def getPlug(name): + def plug(self, *args, **kw): + raise error.PyAsn1Error('Attempted "%s" operation on ASN.1 schema object' % name) + return plug + + op_names = [name + for typ in (str, int, list, dict) + for name in dir(typ) + if (name not in cls.skipMethods and + name.startswith('__') and + name.endswith('__') and + callable(getattr(typ, name)))] + + for name in set(op_names): + setattr(cls, name, getPlug(name)) + + cls._instance = object.__new__(cls) + + return cls._instance + + def __getattr__(self, attr): + if attr in self.skipMethods: + raise AttributeError('Attribute %s not present' % attr) + + raise error.PyAsn1Error('Attempted "%s" operation on ASN.1 schema object' % attr) + + def __repr__(self): + return '<%s object>' % self.__class__.__name__ + + +noValue = NoValue() + + +class SimpleAsn1Type(Asn1Type): + """Base class for all simple classes representing ASN.1 types. + + ASN.1 distinguishes types by their ability to hold other objects. + Scalar types are known as *simple* in ASN.1. + + In the user code, |ASN.1| class is normally used only for telling + ASN.1 objects from others. + + Note + ---- + For as long as ASN.1 is concerned, a way to compare ASN.1 types + is to use :meth:`isSameTypeWith` and :meth:`isSuperTypeOf` methods. + """ + #: Default payload value + defaultValue = noValue + + def __init__(self, value=noValue, **kwargs): + Asn1Type.__init__(self, **kwargs) + if value is noValue: + value = self.defaultValue + else: + value = self.prettyIn(value) + try: + self.subtypeSpec(value) + + except error.PyAsn1Error as exValue: + raise type(exValue)('%s at %s' % (exValue, self.__class__.__name__)) + + self._value = value + + def __repr__(self): + representation = '%s %s object' % ( + self.__class__.__name__, self.isValue and 'value' or 'schema') + + for attr, value in self.readOnly.items(): + if value: + representation += ', %s %s' % (attr, value) + + if self.isValue: + value = self.prettyPrint() + if len(value) > 32: + value = value[:16] + '...' + value[-16:] + representation += ', payload [%s]' % value + + return '<%s>' % representation + + def __eq__(self, other): + if self is other: + return True + return self._value == other + + def __ne__(self, other): + return self._value != other + + def __lt__(self, other): + return self._value < other + + def __le__(self, other): + return self._value <= other + + def __gt__(self, other): + return self._value > other + + def __ge__(self, other): + return self._value >= other + + def __bool__(self): + return bool(self._value) + + def __hash__(self): + return hash(self._value) + + @property + def isValue(self): + """Indicate that |ASN.1| object represents ASN.1 value. + + If *isValue* is :obj:`False` then this object represents just + ASN.1 schema. + + If *isValue* is :obj:`True` then, in addition to its ASN.1 schema + features, this object can also be used like a Python built-in object + (e.g. :class:`int`, :class:`str`, :class:`dict` etc.). + + Returns + ------- + : :class:`bool` + :obj:`False` if object represents just ASN.1 schema. + :obj:`True` if object represents ASN.1 schema and can be used as a normal value. + + Note + ---- + There is an important distinction between PyASN1 schema and value objects. + The PyASN1 schema objects can only participate in ASN.1 schema-related + operations (e.g. defining or testing the structure of the data). Most + obvious uses of ASN.1 schema is to guide serialisation codecs whilst + encoding/decoding serialised ASN.1 contents. + + The PyASN1 value objects can **additionally** participate in many operations + involving regular Python objects (e.g. arithmetic, comprehension etc). + """ + return self._value is not noValue + + def clone(self, value=noValue, **kwargs): + """Create a modified version of |ASN.1| schema or value object. + + The `clone()` method accepts the same set arguments as |ASN.1| + class takes on instantiation except that all arguments + of the `clone()` method are optional. + + Whatever arguments are supplied, they are used to create a copy + of `self` taking precedence over the ones used to instantiate `self`. + + Note + ---- + Due to the immutable nature of the |ASN.1| object, if no arguments + are supplied, no new |ASN.1| object will be created and `self` will + be returned instead. + """ + if value is noValue: + if not kwargs: + return self + + value = self._value + + initializers = self.readOnly.copy() + initializers.update(kwargs) + + return self.__class__(value, **initializers) + + def subtype(self, value=noValue, **kwargs): + """Create a specialization of |ASN.1| schema or value object. + + The subtype relationship between ASN.1 types has no correlation with + subtype relationship between Python types. ASN.1 type is mainly identified + by its tag(s) (:py:class:`~pyasn1.type.tag.TagSet`) and value range + constraints (:py:class:`~pyasn1.type.constraint.ConstraintsIntersection`). + These ASN.1 type properties are implemented as |ASN.1| attributes. + + The `subtype()` method accepts the same set arguments as |ASN.1| + class takes on instantiation except that all parameters + of the `subtype()` method are optional. + + With the exception of the arguments described below, the rest of + supplied arguments they are used to create a copy of `self` taking + precedence over the ones used to instantiate `self`. + + The following arguments to `subtype()` create a ASN.1 subtype out of + |ASN.1| type: + + Other Parameters + ---------------- + implicitTag: :py:class:`~pyasn1.type.tag.Tag` + Implicitly apply given ASN.1 tag object to `self`'s + :py:class:`~pyasn1.type.tag.TagSet`, then use the result as + new object's ASN.1 tag(s). + + explicitTag: :py:class:`~pyasn1.type.tag.Tag` + Explicitly apply given ASN.1 tag object to `self`'s + :py:class:`~pyasn1.type.tag.TagSet`, then use the result as + new object's ASN.1 tag(s). + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Add ASN.1 constraints object to one of the `self`'s, then + use the result as new object's ASN.1 constraints. + + Returns + ------- + : + new instance of |ASN.1| schema or value object + + Note + ---- + Due to the immutable nature of the |ASN.1| object, if no arguments + are supplied, no new |ASN.1| object will be created and `self` will + be returned instead. + """ + if value is noValue: + if not kwargs: + return self + + value = self._value + + initializers = self.readOnly.copy() + + implicitTag = kwargs.pop('implicitTag', None) + if implicitTag is not None: + initializers['tagSet'] = self.tagSet.tagImplicitly(implicitTag) + + explicitTag = kwargs.pop('explicitTag', None) + if explicitTag is not None: + initializers['tagSet'] = self.tagSet.tagExplicitly(explicitTag) + + for arg, option in kwargs.items(): + initializers[arg] += option + + return self.__class__(value, **initializers) + + def prettyIn(self, value): + return value + + def prettyOut(self, value): + return str(value) + + def prettyPrint(self, scope=0): + return self.prettyOut(self._value) + + def prettyPrintType(self, scope=0): + return '%s -> %s' % (self.tagSet, self.__class__.__name__) + +# Backward compatibility +AbstractSimpleAsn1Item = SimpleAsn1Type + +# +# Constructed types: +# * There are five of them: Sequence, SequenceOf/SetOf, Set and Choice +# * ASN1 types and values are represened by Python class instances +# * Value initialization is made for defaulted components only +# * Primary method of component addressing is by-position. Data model for base +# type is Python sequence. Additional type-specific addressing methods +# may be implemented for particular types. +# * SequenceOf and SetOf types do not implement any additional methods +# * Sequence, Set and Choice types also implement by-identifier addressing +# * Sequence, Set and Choice types also implement by-asn1-type (tag) addressing +# * Sequence and Set types may include optional and defaulted +# components +# * Constructed types hold a reference to component types used for value +# verification and ordering. +# * Component type is a scalar type for SequenceOf/SetOf types and a list +# of types for Sequence/Set/Choice. +# + + +class ConstructedAsn1Type(Asn1Type): + """Base class for all constructed classes representing ASN.1 types. + + ASN.1 distinguishes types by their ability to hold other objects. + Those "nesting" types are known as *constructed* in ASN.1. + + In the user code, |ASN.1| class is normally used only for telling + ASN.1 objects from others. + + Note + ---- + For as long as ASN.1 is concerned, a way to compare ASN.1 types + is to use :meth:`isSameTypeWith` and :meth:`isSuperTypeOf` methods. + """ + + #: If :obj:`True`, requires exact component type matching, + #: otherwise subtype relation is only enforced + strictConstraints = False + + componentType = None + + # backward compatibility, unused + sizeSpec = constraint.ConstraintsIntersection() + + def __init__(self, **kwargs): + readOnly = { + 'componentType': self.componentType, + # backward compatibility, unused + 'sizeSpec': self.sizeSpec + } + + # backward compatibility: preserve legacy sizeSpec support + kwargs = self._moveSizeSpec(**kwargs) + + readOnly.update(kwargs) + + Asn1Type.__init__(self, **readOnly) + + def _moveSizeSpec(self, **kwargs): + # backward compatibility, unused + sizeSpec = kwargs.pop('sizeSpec', self.sizeSpec) + if sizeSpec: + subtypeSpec = kwargs.pop('subtypeSpec', self.subtypeSpec) + if subtypeSpec: + subtypeSpec = sizeSpec + + else: + subtypeSpec += sizeSpec + + kwargs['subtypeSpec'] = subtypeSpec + + return kwargs + + def __repr__(self): + representation = '%s %s object' % ( + self.__class__.__name__, self.isValue and 'value' or 'schema' + ) + + for attr, value in self.readOnly.items(): + if value is not noValue: + representation += ', %s=%r' % (attr, value) + + if self.isValue and self.components: + representation += ', payload [%s]' % ', '.join( + [repr(x) for x in self.components]) + + return '<%s>' % representation + + def __eq__(self, other): + return self is other or self.components == other + + def __ne__(self, other): + return self.components != other + + def __lt__(self, other): + return self.components < other + + def __le__(self, other): + return self.components <= other + + def __gt__(self, other): + return self.components > other + + def __ge__(self, other): + return self.components >= other + + def __bool__(self): + return bool(self.components) + + @property + def components(self): + raise error.PyAsn1Error('Method not implemented') + + def _cloneComponentValues(self, myClone, cloneValueFlag): + pass + + def clone(self, **kwargs): + """Create a modified version of |ASN.1| schema object. + + The `clone()` method accepts the same set arguments as |ASN.1| + class takes on instantiation except that all arguments + of the `clone()` method are optional. + + Whatever arguments are supplied, they are used to create a copy + of `self` taking precedence over the ones used to instantiate `self`. + + Possible values of `self` are never copied over thus `clone()` can + only create a new schema object. + + Returns + ------- + : + new instance of |ASN.1| type/value + + Note + ---- + Due to the mutable nature of the |ASN.1| object, even if no arguments + are supplied, a new |ASN.1| object will be created and returned. + """ + cloneValueFlag = kwargs.pop('cloneValueFlag', False) + + initializers = self.readOnly.copy() + initializers.update(kwargs) + + clone = self.__class__(**initializers) + + if cloneValueFlag: + self._cloneComponentValues(clone, cloneValueFlag) + + return clone + + def subtype(self, **kwargs): + """Create a specialization of |ASN.1| schema object. + + The `subtype()` method accepts the same set arguments as |ASN.1| + class takes on instantiation except that all parameters + of the `subtype()` method are optional. + + With the exception of the arguments described below, the rest of + supplied arguments they are used to create a copy of `self` taking + precedence over the ones used to instantiate `self`. + + The following arguments to `subtype()` create a ASN.1 subtype out of + |ASN.1| type. + + Other Parameters + ---------------- + implicitTag: :py:class:`~pyasn1.type.tag.Tag` + Implicitly apply given ASN.1 tag object to `self`'s + :py:class:`~pyasn1.type.tag.TagSet`, then use the result as + new object's ASN.1 tag(s). + + explicitTag: :py:class:`~pyasn1.type.tag.Tag` + Explicitly apply given ASN.1 tag object to `self`'s + :py:class:`~pyasn1.type.tag.TagSet`, then use the result as + new object's ASN.1 tag(s). + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Add ASN.1 constraints object to one of the `self`'s, then + use the result as new object's ASN.1 constraints. + + + Returns + ------- + : + new instance of |ASN.1| type/value + + Note + ---- + Due to the mutable nature of the |ASN.1| object, even if no arguments + are supplied, a new |ASN.1| object will be created and returned. + """ + + initializers = self.readOnly.copy() + + cloneValueFlag = kwargs.pop('cloneValueFlag', False) + + implicitTag = kwargs.pop('implicitTag', None) + if implicitTag is not None: + initializers['tagSet'] = self.tagSet.tagImplicitly(implicitTag) + + explicitTag = kwargs.pop('explicitTag', None) + if explicitTag is not None: + initializers['tagSet'] = self.tagSet.tagExplicitly(explicitTag) + + for arg, option in kwargs.items(): + initializers[arg] += option + + clone = self.__class__(**initializers) + + if cloneValueFlag: + self._cloneComponentValues(clone, cloneValueFlag) + + return clone + + def getComponentByPosition(self, idx): + raise error.PyAsn1Error('Method not implemented') + + def setComponentByPosition(self, idx, value, verifyConstraints=True): + raise error.PyAsn1Error('Method not implemented') + + def setComponents(self, *args, **kwargs): + for idx, value in enumerate(args): + self[idx] = value + for k in kwargs: + self[k] = kwargs[k] + return self + + # backward compatibility + + def setDefaultComponents(self): + pass + + def getComponentType(self): + return self.componentType + + # backward compatibility, unused + def verifySizeSpec(self): + self.subtypeSpec(self) + + + # Backward compatibility +AbstractConstructedAsn1Item = ConstructedAsn1Type diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/char.py b/.venv/lib/python3.12/site-packages/pyasn1/type/char.py new file mode 100644 index 00000000..ec65f006 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/char.py @@ -0,0 +1,288 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +import sys + +from pyasn1 import error +from pyasn1.type import tag +from pyasn1.type import univ + +__all__ = ['NumericString', 'PrintableString', 'TeletexString', 'T61String', 'VideotexString', + 'IA5String', 'GraphicString', 'VisibleString', 'ISO646String', + 'GeneralString', 'UniversalString', 'BMPString', 'UTF8String'] + +NoValue = univ.NoValue +noValue = univ.noValue + + +class AbstractCharacterString(univ.OctetString): + """Creates |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, + its objects are immutable and duck-type :class:`bytes`. + When used in octet-stream context, |ASN.1| type assumes + "|encoding|" encoding. + + Keyword Args + ------------ + value: :class:`str`, :class:`bytes` or |ASN.1| object + :class:`str`, alternatively :class:`bytes` + representing octet-stream of serialised unicode string + (note `encoding` parameter) or |ASN.1| class instance. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + encoding: :py:class:`str` + Unicode codec ID to encode/decode + :class:`str` the payload when |ASN.1| object is used + in octet-stream context. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + """ + + def __str__(self): + return str(self._value) + + def __bytes__(self): + try: + return self._value.encode(self.encoding) + except UnicodeEncodeError as exc: + raise error.PyAsn1UnicodeEncodeError( + "Can't encode string '%s' with codec " + "%s" % (self._value, self.encoding), exc + ) + + def prettyIn(self, value): + try: + if isinstance(value, str): + return value + elif isinstance(value, bytes): + return value.decode(self.encoding) + elif isinstance(value, (tuple, list)): + return self.prettyIn(bytes(value)) + elif isinstance(value, univ.OctetString): + return value.asOctets().decode(self.encoding) + else: + return str(value) + + except (UnicodeDecodeError, LookupError) as exc: + raise error.PyAsn1UnicodeDecodeError( + "Can't decode string '%s' with codec " + "%s" % (value, self.encoding), exc + ) + + def asOctets(self, padding=True): + return bytes(self) + + def asNumbers(self, padding=True): + return tuple(bytes(self)) + + # + # See OctetString.prettyPrint() for the explanation + # + + def prettyOut(self, value): + return value + + def prettyPrint(self, scope=0): + # first see if subclass has its own .prettyOut() + value = self.prettyOut(self._value) + + if value is not self._value: + return value + + return AbstractCharacterString.__str__(self) + + def __reversed__(self): + return reversed(self._value) + + +class NumericString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 18) + ) + encoding = 'us-ascii' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class PrintableString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 19) + ) + encoding = 'us-ascii' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class TeletexString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 20) + ) + encoding = 'iso-8859-1' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class T61String(TeletexString): + __doc__ = TeletexString.__doc__ + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class VideotexString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 21) + ) + encoding = 'iso-8859-1' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class IA5String(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 22) + ) + encoding = 'us-ascii' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class GraphicString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 25) + ) + encoding = 'iso-8859-1' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class VisibleString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 26) + ) + encoding = 'us-ascii' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class ISO646String(VisibleString): + __doc__ = VisibleString.__doc__ + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + +class GeneralString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 27) + ) + encoding = 'iso-8859-1' + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class UniversalString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 28) + ) + encoding = "utf-32-be" + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class BMPString(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 30) + ) + encoding = "utf-16-be" + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() + + +class UTF8String(AbstractCharacterString): + __doc__ = AbstractCharacterString.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = AbstractCharacterString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 12) + ) + encoding = "utf-8" + + # Optimization for faster codec lookup + typeId = AbstractCharacterString.getTypeId() diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/constraint.py b/.venv/lib/python3.12/site-packages/pyasn1/type/constraint.py new file mode 100644 index 00000000..02368d0a --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/constraint.py @@ -0,0 +1,751 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +# Original concept and code by Mike C. Fletcher. +# +import sys + +from pyasn1.type import error + +__all__ = ['SingleValueConstraint', 'ContainedSubtypeConstraint', + 'ValueRangeConstraint', 'ValueSizeConstraint', + 'PermittedAlphabetConstraint', 'InnerTypeConstraint', + 'ConstraintsExclusion', 'ConstraintsIntersection', + 'ConstraintsUnion'] + + +class AbstractConstraint(object): + + def __init__(self, *values): + self._valueMap = set() + self._setValues(values) + self.__hash = hash((self.__class__.__name__, self._values)) + + def __call__(self, value, idx=None): + if not self._values: + return + + try: + self._testValue(value, idx) + + except error.ValueConstraintError as exc: + raise error.ValueConstraintError( + '%s failed at: %r' % (self, exc) + ) + + def __repr__(self): + representation = '%s object' % (self.__class__.__name__) + + if self._values: + representation += ', consts %s' % ', '.join( + [repr(x) for x in self._values]) + + return '<%s>' % representation + + def __eq__(self, other): + if self is other: + return True + return self._values == other + + def __ne__(self, other): + return self._values != other + + def __lt__(self, other): + return self._values < other + + def __le__(self, other): + return self._values <= other + + def __gt__(self, other): + return self._values > other + + def __ge__(self, other): + return self._values >= other + + def __bool__(self): + return bool(self._values) + + def __hash__(self): + return self.__hash + + def _setValues(self, values): + self._values = values + + def _testValue(self, value, idx): + raise error.ValueConstraintError(value) + + # Constraints derivation logic + def getValueMap(self): + return self._valueMap + + def isSuperTypeOf(self, otherConstraint): + # TODO: fix possible comparison of set vs scalars here + return (otherConstraint is self or + not self._values or + otherConstraint == self or + self in otherConstraint.getValueMap()) + + def isSubTypeOf(self, otherConstraint): + return (otherConstraint is self or + not self or + otherConstraint == self or + otherConstraint in self._valueMap) + + +class SingleValueConstraint(AbstractConstraint): + """Create a SingleValueConstraint object. + + The SingleValueConstraint satisfies any value that + is present in the set of permitted values. + + Objects of this type are iterable (emitting constraint values) and + can act as operands for some arithmetic operations e.g. addition + and subtraction. The latter can be used for combining multiple + SingleValueConstraint objects into one. + + The SingleValueConstraint object can be applied to + any ASN.1 type. + + Parameters + ---------- + *values: :class:`int` + Full set of values permitted by this constraint object. + + Examples + -------- + .. code-block:: python + + class DivisorOfSix(Integer): + ''' + ASN.1 specification: + + Divisor-Of-6 ::= INTEGER (1 | 2 | 3 | 6) + ''' + subtypeSpec = SingleValueConstraint(1, 2, 3, 6) + + # this will succeed + divisor_of_six = DivisorOfSix(1) + + # this will raise ValueConstraintError + divisor_of_six = DivisorOfSix(7) + """ + def _setValues(self, values): + self._values = values + self._set = set(values) + + def _testValue(self, value, idx): + if value not in self._set: + raise error.ValueConstraintError(value) + + # Constrains can be merged or reduced + + def __contains__(self, item): + return item in self._set + + def __iter__(self): + return iter(self._set) + + def __add__(self, constraint): + return self.__class__(*(self._set.union(constraint))) + + def __sub__(self, constraint): + return self.__class__(*(self._set.difference(constraint))) + + +class ContainedSubtypeConstraint(AbstractConstraint): + """Create a ContainedSubtypeConstraint object. + + The ContainedSubtypeConstraint satisfies any value that + is present in the set of permitted values and also + satisfies included constraints. + + The ContainedSubtypeConstraint object can be applied to + any ASN.1 type. + + Parameters + ---------- + *values: + Full set of values and constraint objects permitted + by this constraint object. + + Examples + -------- + .. code-block:: python + + class DivisorOfEighteen(Integer): + ''' + ASN.1 specification: + + Divisors-of-18 ::= INTEGER (INCLUDES Divisors-of-6 | 9 | 18) + ''' + subtypeSpec = ContainedSubtypeConstraint( + SingleValueConstraint(1, 2, 3, 6), 9, 18 + ) + + # this will succeed + divisor_of_eighteen = DivisorOfEighteen(9) + + # this will raise ValueConstraintError + divisor_of_eighteen = DivisorOfEighteen(10) + """ + def _testValue(self, value, idx): + for constraint in self._values: + if isinstance(constraint, AbstractConstraint): + constraint(value, idx) + elif value not in self._set: + raise error.ValueConstraintError(value) + + +class ValueRangeConstraint(AbstractConstraint): + """Create a ValueRangeConstraint object. + + The ValueRangeConstraint satisfies any value that + falls in the range of permitted values. + + The ValueRangeConstraint object can only be applied + to :class:`~pyasn1.type.univ.Integer` and + :class:`~pyasn1.type.univ.Real` types. + + Parameters + ---------- + start: :class:`int` + Minimum permitted value in the range (inclusive) + + end: :class:`int` + Maximum permitted value in the range (inclusive) + + Examples + -------- + .. code-block:: python + + class TeenAgeYears(Integer): + ''' + ASN.1 specification: + + TeenAgeYears ::= INTEGER (13 .. 19) + ''' + subtypeSpec = ValueRangeConstraint(13, 19) + + # this will succeed + teen_year = TeenAgeYears(18) + + # this will raise ValueConstraintError + teen_year = TeenAgeYears(20) + """ + def _testValue(self, value, idx): + if value < self.start or value > self.stop: + raise error.ValueConstraintError(value) + + def _setValues(self, values): + if len(values) != 2: + raise error.PyAsn1Error( + '%s: bad constraint values' % (self.__class__.__name__,) + ) + self.start, self.stop = values + if self.start > self.stop: + raise error.PyAsn1Error( + '%s: screwed constraint values (start > stop): %s > %s' % ( + self.__class__.__name__, + self.start, self.stop + ) + ) + AbstractConstraint._setValues(self, values) + + +class ValueSizeConstraint(ValueRangeConstraint): + """Create a ValueSizeConstraint object. + + The ValueSizeConstraint satisfies any value for + as long as its size falls within the range of + permitted sizes. + + The ValueSizeConstraint object can be applied + to :class:`~pyasn1.type.univ.BitString`, + :class:`~pyasn1.type.univ.OctetString` (including + all :ref:`character ASN.1 types <type.char>`), + :class:`~pyasn1.type.univ.SequenceOf` + and :class:`~pyasn1.type.univ.SetOf` types. + + Parameters + ---------- + minimum: :class:`int` + Minimum permitted size of the value (inclusive) + + maximum: :class:`int` + Maximum permitted size of the value (inclusive) + + Examples + -------- + .. code-block:: python + + class BaseballTeamRoster(SetOf): + ''' + ASN.1 specification: + + BaseballTeamRoster ::= SET SIZE (1..25) OF PlayerNames + ''' + componentType = PlayerNames() + subtypeSpec = ValueSizeConstraint(1, 25) + + # this will succeed + team = BaseballTeamRoster() + team.extend(['Jan', 'Matej']) + encode(team) + + # this will raise ValueConstraintError + team = BaseballTeamRoster() + team.extend(['Jan'] * 26) + encode(team) + + Note + ---- + Whenever ValueSizeConstraint is applied to mutable types + (e.g. :class:`~pyasn1.type.univ.SequenceOf`, + :class:`~pyasn1.type.univ.SetOf`), constraint + validation only happens at the serialisation phase rather + than schema instantiation phase (as it is with immutable + types). + """ + def _testValue(self, value, idx): + valueSize = len(value) + if valueSize < self.start or valueSize > self.stop: + raise error.ValueConstraintError(value) + + +class PermittedAlphabetConstraint(SingleValueConstraint): + """Create a PermittedAlphabetConstraint object. + + The PermittedAlphabetConstraint satisfies any character + string for as long as all its characters are present in + the set of permitted characters. + + Objects of this type are iterable (emitting constraint values) and + can act as operands for some arithmetic operations e.g. addition + and subtraction. + + The PermittedAlphabetConstraint object can only be applied + to the :ref:`character ASN.1 types <type.char>` such as + :class:`~pyasn1.type.char.IA5String`. + + Parameters + ---------- + *alphabet: :class:`str` + Full set of characters permitted by this constraint object. + + Example + ------- + .. code-block:: python + + class BooleanValue(IA5String): + ''' + ASN.1 specification: + + BooleanValue ::= IA5String (FROM ('T' | 'F')) + ''' + subtypeSpec = PermittedAlphabetConstraint('T', 'F') + + # this will succeed + truth = BooleanValue('T') + truth = BooleanValue('TF') + + # this will raise ValueConstraintError + garbage = BooleanValue('TAF') + + ASN.1 `FROM ... EXCEPT ...` clause can be modelled by combining multiple + PermittedAlphabetConstraint objects into one: + + Example + ------- + .. code-block:: python + + class Lipogramme(IA5String): + ''' + ASN.1 specification: + + Lipogramme ::= + IA5String (FROM (ALL EXCEPT ("e"|"E"))) + ''' + subtypeSpec = ( + PermittedAlphabetConstraint(*string.printable) - + PermittedAlphabetConstraint('e', 'E') + ) + + # this will succeed + lipogramme = Lipogramme('A work of fiction?') + + # this will raise ValueConstraintError + lipogramme = Lipogramme('Eel') + + Note + ---- + Although `ConstraintsExclusion` object could seemingly be used for this + purpose, practically, for it to work, it needs to represent its operand + constraints as sets and intersect one with the other. That would require + the insight into the constraint values (and their types) that are otherwise + hidden inside the constraint object. + + Therefore it's more practical to model `EXCEPT` clause at + `PermittedAlphabetConstraint` level instead. + """ + def _setValues(self, values): + self._values = values + self._set = set(values) + + def _testValue(self, value, idx): + if not self._set.issuperset(value): + raise error.ValueConstraintError(value) + + +class ComponentPresentConstraint(AbstractConstraint): + """Create a ComponentPresentConstraint object. + + The ComponentPresentConstraint is only satisfied when the value + is not `None`. + + The ComponentPresentConstraint object is typically used with + `WithComponentsConstraint`. + + Examples + -------- + .. code-block:: python + + present = ComponentPresentConstraint() + + # this will succeed + present('whatever') + + # this will raise ValueConstraintError + present(None) + """ + def _setValues(self, values): + self._values = ('<must be present>',) + + if values: + raise error.PyAsn1Error('No arguments expected') + + def _testValue(self, value, idx): + if value is None: + raise error.ValueConstraintError( + 'Component is not present:') + + +class ComponentAbsentConstraint(AbstractConstraint): + """Create a ComponentAbsentConstraint object. + + The ComponentAbsentConstraint is only satisfied when the value + is `None`. + + The ComponentAbsentConstraint object is typically used with + `WithComponentsConstraint`. + + Examples + -------- + .. code-block:: python + + absent = ComponentAbsentConstraint() + + # this will succeed + absent(None) + + # this will raise ValueConstraintError + absent('whatever') + """ + def _setValues(self, values): + self._values = ('<must be absent>',) + + if values: + raise error.PyAsn1Error('No arguments expected') + + def _testValue(self, value, idx): + if value is not None: + raise error.ValueConstraintError( + 'Component is not absent: %r' % value) + + +class WithComponentsConstraint(AbstractConstraint): + """Create a WithComponentsConstraint object. + + The `WithComponentsConstraint` satisfies any mapping object that has + constrained fields present or absent, what is indicated by + `ComponentPresentConstraint` and `ComponentAbsentConstraint` + objects respectively. + + The `WithComponentsConstraint` object is typically applied + to :class:`~pyasn1.type.univ.Set` or + :class:`~pyasn1.type.univ.Sequence` types. + + Parameters + ---------- + *fields: :class:`tuple` + Zero or more tuples of (`field`, `constraint`) indicating constrained + fields. + + Notes + ----- + On top of the primary use of `WithComponentsConstraint` (ensuring presence + or absence of particular components of a :class:`~pyasn1.type.univ.Set` or + :class:`~pyasn1.type.univ.Sequence`), it is also possible to pass any other + constraint objects or their combinations. In case of scalar fields, these + constraints will be verified in addition to the constraints belonging to + scalar components themselves. However, formally, these additional + constraints do not change the type of these ASN.1 objects. + + Examples + -------- + + .. code-block:: python + + class Item(Sequence): # Set is similar + ''' + ASN.1 specification: + + Item ::= SEQUENCE { + id INTEGER OPTIONAL, + name OCTET STRING OPTIONAL + } WITH COMPONENTS id PRESENT, name ABSENT | id ABSENT, name PRESENT + ''' + componentType = NamedTypes( + OptionalNamedType('id', Integer()), + OptionalNamedType('name', OctetString()) + ) + withComponents = ConstraintsUnion( + WithComponentsConstraint( + ('id', ComponentPresentConstraint()), + ('name', ComponentAbsentConstraint()) + ), + WithComponentsConstraint( + ('id', ComponentAbsentConstraint()), + ('name', ComponentPresentConstraint()) + ) + ) + + item = Item() + + # This will succeed + item['id'] = 1 + + # This will succeed + item.reset() + item['name'] = 'John' + + # This will fail (on encoding) + item.reset() + descr['id'] = 1 + descr['name'] = 'John' + """ + def _testValue(self, value, idx): + for field, constraint in self._values: + constraint(value.get(field)) + + def _setValues(self, values): + AbstractConstraint._setValues(self, values) + + +# This is a bit kludgy, meaning two op modes within a single constraint +class InnerTypeConstraint(AbstractConstraint): + """Value must satisfy the type and presence constraints""" + + def _testValue(self, value, idx): + if self.__singleTypeConstraint: + self.__singleTypeConstraint(value) + elif self.__multipleTypeConstraint: + if idx not in self.__multipleTypeConstraint: + raise error.ValueConstraintError(value) + constraint, status = self.__multipleTypeConstraint[idx] + if status == 'ABSENT': # XXX presence is not checked! + raise error.ValueConstraintError(value) + constraint(value) + + def _setValues(self, values): + self.__multipleTypeConstraint = {} + self.__singleTypeConstraint = None + for v in values: + if isinstance(v, tuple): + self.__multipleTypeConstraint[v[0]] = v[1], v[2] + else: + self.__singleTypeConstraint = v + AbstractConstraint._setValues(self, values) + + +# Logic operations on constraints + +class ConstraintsExclusion(AbstractConstraint): + """Create a ConstraintsExclusion logic operator object. + + The ConstraintsExclusion logic operator succeeds when the + value does *not* satisfy the operand constraint. + + The ConstraintsExclusion object can be applied to + any constraint and logic operator object. + + Parameters + ---------- + *constraints: + Constraint or logic operator objects. + + Examples + -------- + .. code-block:: python + + class LuckyNumber(Integer): + subtypeSpec = ConstraintsExclusion( + SingleValueConstraint(13) + ) + + # this will succeed + luckyNumber = LuckyNumber(12) + + # this will raise ValueConstraintError + luckyNumber = LuckyNumber(13) + + Note + ---- + The `FROM ... EXCEPT ...` ASN.1 clause should be modeled by combining + constraint objects into one. See `PermittedAlphabetConstraint` for more + information. + """ + def _testValue(self, value, idx): + for constraint in self._values: + try: + constraint(value, idx) + + except error.ValueConstraintError: + continue + + raise error.ValueConstraintError(value) + + def _setValues(self, values): + AbstractConstraint._setValues(self, values) + + +class AbstractConstraintSet(AbstractConstraint): + + def __getitem__(self, idx): + return self._values[idx] + + def __iter__(self): + return iter(self._values) + + def __add__(self, value): + return self.__class__(*(self._values + (value,))) + + def __radd__(self, value): + return self.__class__(*((value,) + self._values)) + + def __len__(self): + return len(self._values) + + # Constraints inclusion in sets + + def _setValues(self, values): + self._values = values + for constraint in values: + if constraint: + self._valueMap.add(constraint) + self._valueMap.update(constraint.getValueMap()) + + +class ConstraintsIntersection(AbstractConstraintSet): + """Create a ConstraintsIntersection logic operator object. + + The ConstraintsIntersection logic operator only succeeds + if *all* its operands succeed. + + The ConstraintsIntersection object can be applied to + any constraint and logic operator objects. + + The ConstraintsIntersection object duck-types the immutable + container object like Python :py:class:`tuple`. + + Parameters + ---------- + *constraints: + Constraint or logic operator objects. + + Examples + -------- + .. code-block:: python + + class CapitalAndSmall(IA5String): + ''' + ASN.1 specification: + + CapitalAndSmall ::= + IA5String (FROM ("A".."Z"|"a".."z")) + ''' + subtypeSpec = ConstraintsIntersection( + PermittedAlphabetConstraint('A', 'Z'), + PermittedAlphabetConstraint('a', 'z') + ) + + # this will succeed + capital_and_small = CapitalAndSmall('Hello') + + # this will raise ValueConstraintError + capital_and_small = CapitalAndSmall('hello') + """ + def _testValue(self, value, idx): + for constraint in self._values: + constraint(value, idx) + + +class ConstraintsUnion(AbstractConstraintSet): + """Create a ConstraintsUnion logic operator object. + + The ConstraintsUnion logic operator succeeds if + *at least* a single operand succeeds. + + The ConstraintsUnion object can be applied to + any constraint and logic operator objects. + + The ConstraintsUnion object duck-types the immutable + container object like Python :py:class:`tuple`. + + Parameters + ---------- + *constraints: + Constraint or logic operator objects. + + Examples + -------- + .. code-block:: python + + class CapitalOrSmall(IA5String): + ''' + ASN.1 specification: + + CapitalOrSmall ::= + IA5String (FROM ("A".."Z") | FROM ("a".."z")) + ''' + subtypeSpec = ConstraintsUnion( + PermittedAlphabetConstraint('A', 'Z'), + PermittedAlphabetConstraint('a', 'z') + ) + + # this will succeed + capital_or_small = CapitalAndSmall('Hello') + + # this will raise ValueConstraintError + capital_or_small = CapitalOrSmall('hello!') + """ + def _testValue(self, value, idx): + for constraint in self._values: + try: + constraint(value, idx) + except error.ValueConstraintError: + pass + else: + return + + raise error.ValueConstraintError( + 'all of %s failed for "%s"' % (self._values, value) + ) + +# TODO: +# refactor InnerTypeConstraint +# add tests for type check +# implement other constraint types +# make constraint validation easy to skip diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/error.py b/.venv/lib/python3.12/site-packages/pyasn1/type/error.py new file mode 100644 index 00000000..0ff082ab --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/error.py @@ -0,0 +1,11 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +from pyasn1.error import PyAsn1Error + + +class ValueConstraintError(PyAsn1Error): + pass diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/namedtype.py b/.venv/lib/python3.12/site-packages/pyasn1/type/namedtype.py new file mode 100644 index 00000000..5f6c4ca3 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/namedtype.py @@ -0,0 +1,550 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +import sys + +from pyasn1 import error +from pyasn1.type import tag +from pyasn1.type import tagmap + +__all__ = ['NamedType', 'OptionalNamedType', 'DefaultedNamedType', + 'NamedTypes'] + +class NamedType(object): + """Create named field object for a constructed ASN.1 type. + + The |NamedType| object represents a single name and ASN.1 type of a constructed ASN.1 type. + + |NamedType| objects are immutable and duck-type Python :class:`tuple` objects + holding *name* and *asn1Object* components. + + Parameters + ---------- + name: :py:class:`str` + Field name + + asn1Object: + ASN.1 type object + """ + isOptional = False + isDefaulted = False + + def __init__(self, name, asn1Object, openType=None): + self.__name = name + self.__type = asn1Object + self.__nameAndType = name, asn1Object + self.__openType = openType + + def __repr__(self): + representation = '%s=%r' % (self.name, self.asn1Object) + + if self.openType: + representation += ', open type %r' % self.openType + + return '<%s object, type %s>' % ( + self.__class__.__name__, representation) + + def __eq__(self, other): + return self.__nameAndType == other + + def __ne__(self, other): + return self.__nameAndType != other + + def __lt__(self, other): + return self.__nameAndType < other + + def __le__(self, other): + return self.__nameAndType <= other + + def __gt__(self, other): + return self.__nameAndType > other + + def __ge__(self, other): + return self.__nameAndType >= other + + def __hash__(self): + return hash(self.__nameAndType) + + def __getitem__(self, idx): + return self.__nameAndType[idx] + + def __iter__(self): + return iter(self.__nameAndType) + + @property + def name(self): + return self.__name + + @property + def asn1Object(self): + return self.__type + + @property + def openType(self): + return self.__openType + + # Backward compatibility + + def getName(self): + return self.name + + def getType(self): + return self.asn1Object + + +class OptionalNamedType(NamedType): + __doc__ = NamedType.__doc__ + + isOptional = True + + +class DefaultedNamedType(NamedType): + __doc__ = NamedType.__doc__ + + isDefaulted = True + + +class NamedTypes(object): + """Create a collection of named fields for a constructed ASN.1 type. + + The NamedTypes object represents a collection of named fields of a constructed ASN.1 type. + + *NamedTypes* objects are immutable and duck-type Python :class:`dict` objects + holding *name* as keys and ASN.1 type object as values. + + Parameters + ---------- + *namedTypes: :class:`~pyasn1.type.namedtype.NamedType` + + Examples + -------- + + .. code-block:: python + + class Description(Sequence): + ''' + ASN.1 specification: + + Description ::= SEQUENCE { + surname IA5String, + first-name IA5String OPTIONAL, + age INTEGER DEFAULT 40 + } + ''' + componentType = NamedTypes( + NamedType('surname', IA5String()), + OptionalNamedType('first-name', IA5String()), + DefaultedNamedType('age', Integer(40)) + ) + + descr = Description() + descr['surname'] = 'Smith' + descr['first-name'] = 'John' + """ + def __init__(self, *namedTypes, **kwargs): + self.__namedTypes = namedTypes + self.__namedTypesLen = len(self.__namedTypes) + self.__minTagSet = self.__computeMinTagSet() + self.__nameToPosMap = self.__computeNameToPosMap() + self.__tagToPosMap = self.__computeTagToPosMap() + self.__ambiguousTypes = 'terminal' not in kwargs and self.__computeAmbiguousTypes() or {} + self.__uniqueTagMap = self.__computeTagMaps(unique=True) + self.__nonUniqueTagMap = self.__computeTagMaps(unique=False) + self.__hasOptionalOrDefault = any([True for namedType in self.__namedTypes + if namedType.isDefaulted or namedType.isOptional]) + self.__hasOpenTypes = any([True for namedType in self.__namedTypes + if namedType.openType]) + + self.__requiredComponents = frozenset( + [idx for idx, nt in enumerate(self.__namedTypes) if not nt.isOptional and not nt.isDefaulted] + ) + self.__keys = frozenset([namedType.name for namedType in self.__namedTypes]) + self.__values = tuple([namedType.asn1Object for namedType in self.__namedTypes]) + self.__items = tuple([(namedType.name, namedType.asn1Object) for namedType in self.__namedTypes]) + + def __repr__(self): + representation = ', '.join(['%r' % x for x in self.__namedTypes]) + return '<%s object, types %s>' % ( + self.__class__.__name__, representation) + + def __eq__(self, other): + return self.__namedTypes == other + + def __ne__(self, other): + return self.__namedTypes != other + + def __lt__(self, other): + return self.__namedTypes < other + + def __le__(self, other): + return self.__namedTypes <= other + + def __gt__(self, other): + return self.__namedTypes > other + + def __ge__(self, other): + return self.__namedTypes >= other + + def __hash__(self): + return hash(self.__namedTypes) + + def __getitem__(self, idx): + try: + return self.__namedTypes[idx] + + except TypeError: + return self.__namedTypes[self.__nameToPosMap[idx]] + + def __contains__(self, key): + return key in self.__nameToPosMap + + def __iter__(self): + return (x[0] for x in self.__namedTypes) + + def __bool__(self): + return self.__namedTypesLen > 0 + + def __len__(self): + return self.__namedTypesLen + + # Python dict protocol + + def values(self): + return self.__values + + def keys(self): + return self.__keys + + def items(self): + return self.__items + + def clone(self): + return self.__class__(*self.__namedTypes) + + class PostponedError(object): + def __init__(self, errorMsg): + self.__errorMsg = errorMsg + + def __getitem__(self, item): + raise error.PyAsn1Error(self.__errorMsg) + + def __computeTagToPosMap(self): + tagToPosMap = {} + for idx, namedType in enumerate(self.__namedTypes): + tagMap = namedType.asn1Object.tagMap + if isinstance(tagMap, NamedTypes.PostponedError): + return tagMap + if not tagMap: + continue + for _tagSet in tagMap.presentTypes: + if _tagSet in tagToPosMap: + return NamedTypes.PostponedError('Duplicate component tag %s at %s' % (_tagSet, namedType)) + tagToPosMap[_tagSet] = idx + + return tagToPosMap + + def __computeNameToPosMap(self): + nameToPosMap = {} + for idx, namedType in enumerate(self.__namedTypes): + if namedType.name in nameToPosMap: + return NamedTypes.PostponedError('Duplicate component name %s at %s' % (namedType.name, namedType)) + nameToPosMap[namedType.name] = idx + + return nameToPosMap + + def __computeAmbiguousTypes(self): + ambiguousTypes = {} + partialAmbiguousTypes = () + for idx, namedType in reversed(tuple(enumerate(self.__namedTypes))): + if namedType.isOptional or namedType.isDefaulted: + partialAmbiguousTypes = (namedType,) + partialAmbiguousTypes + else: + partialAmbiguousTypes = (namedType,) + if len(partialAmbiguousTypes) == len(self.__namedTypes): + ambiguousTypes[idx] = self + else: + ambiguousTypes[idx] = NamedTypes(*partialAmbiguousTypes, **dict(terminal=True)) + return ambiguousTypes + + def getTypeByPosition(self, idx): + """Return ASN.1 type object by its position in fields set. + + Parameters + ---------- + idx: :py:class:`int` + Field index + + Returns + ------- + : + ASN.1 type + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If given position is out of fields range + """ + try: + return self.__namedTypes[idx].asn1Object + + except IndexError: + raise error.PyAsn1Error('Type position out of range') + + def getPositionByType(self, tagSet): + """Return field position by its ASN.1 type. + + Parameters + ---------- + tagSet: :class:`~pysnmp.type.tag.TagSet` + ASN.1 tag set distinguishing one ASN.1 type from others. + + Returns + ------- + : :py:class:`int` + ASN.1 type position in fields set + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If *tagSet* is not present or ASN.1 types are not unique within callee *NamedTypes* + """ + try: + return self.__tagToPosMap[tagSet] + + except KeyError: + raise error.PyAsn1Error('Type %s not found' % (tagSet,)) + + def getNameByPosition(self, idx): + """Return field name by its position in fields set. + + Parameters + ---------- + idx: :py:class:`idx` + Field index + + Returns + ------- + : :py:class:`str` + Field name + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If given field name is not present in callee *NamedTypes* + """ + try: + return self.__namedTypes[idx].name + + except IndexError: + raise error.PyAsn1Error('Type position out of range') + + def getPositionByName(self, name): + """Return field position by filed name. + + Parameters + ---------- + name: :py:class:`str` + Field name + + Returns + ------- + : :py:class:`int` + Field position in fields set + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If *name* is not present or not unique within callee *NamedTypes* + """ + try: + return self.__nameToPosMap[name] + + except KeyError: + raise error.PyAsn1Error('Name %s not found' % (name,)) + + def getTagMapNearPosition(self, idx): + """Return ASN.1 types that are allowed at or past given field position. + + Some ASN.1 serialisation allow for skipping optional and defaulted fields. + Some constructed ASN.1 types allow reordering of the fields. When recovering + such objects it may be important to know which types can possibly be + present at any given position in the field sets. + + Parameters + ---------- + idx: :py:class:`int` + Field index + + Returns + ------- + : :class:`~pyasn1.type.tagmap.TagMap` + Map if ASN.1 types allowed at given field position + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If given position is out of fields range + """ + try: + return self.__ambiguousTypes[idx].tagMap + + except KeyError: + raise error.PyAsn1Error('Type position out of range') + + def getPositionNearType(self, tagSet, idx): + """Return the closest field position where given ASN.1 type is allowed. + + Some ASN.1 serialisation allow for skipping optional and defaulted fields. + Some constructed ASN.1 types allow reordering of the fields. When recovering + such objects it may be important to know at which field position, in field set, + given *tagSet* is allowed at or past *idx* position. + + Parameters + ---------- + tagSet: :class:`~pyasn1.type.tag.TagSet` + ASN.1 type which field position to look up + + idx: :py:class:`int` + Field position at or past which to perform ASN.1 type look up + + Returns + ------- + : :py:class:`int` + Field position in fields set + + Raises + ------ + ~pyasn1.error.PyAsn1Error + If *tagSet* is not present or not unique within callee *NamedTypes* + or *idx* is out of fields range + """ + try: + return idx + self.__ambiguousTypes[idx].getPositionByType(tagSet) + + except KeyError: + raise error.PyAsn1Error('Type position out of range') + + def __computeMinTagSet(self): + minTagSet = None + for namedType in self.__namedTypes: + asn1Object = namedType.asn1Object + + try: + tagSet = asn1Object.minTagSet + + except AttributeError: + tagSet = asn1Object.tagSet + + if minTagSet is None or tagSet < minTagSet: + minTagSet = tagSet + + return minTagSet or tag.TagSet() + + @property + def minTagSet(self): + """Return the minimal TagSet among ASN.1 type in callee *NamedTypes*. + + Some ASN.1 types/serialisation protocols require ASN.1 types to be + arranged based on their numerical tag value. The *minTagSet* property + returns that. + + Returns + ------- + : :class:`~pyasn1.type.tagset.TagSet` + Minimal TagSet among ASN.1 types in callee *NamedTypes* + """ + return self.__minTagSet + + def __computeTagMaps(self, unique): + presentTypes = {} + skipTypes = {} + defaultType = None + for namedType in self.__namedTypes: + tagMap = namedType.asn1Object.tagMap + if isinstance(tagMap, NamedTypes.PostponedError): + return tagMap + for tagSet in tagMap: + if unique and tagSet in presentTypes: + return NamedTypes.PostponedError('Non-unique tagSet %s of %s at %s' % (tagSet, namedType, self)) + presentTypes[tagSet] = namedType.asn1Object + skipTypes.update(tagMap.skipTypes) + + if defaultType is None: + defaultType = tagMap.defaultType + elif tagMap.defaultType is not None: + return NamedTypes.PostponedError('Duplicate default ASN.1 type at %s' % (self,)) + + return tagmap.TagMap(presentTypes, skipTypes, defaultType) + + @property + def tagMap(self): + """Return a *TagMap* object from tags and types recursively. + + Return a :class:`~pyasn1.type.tagmap.TagMap` object by + combining tags from *TagMap* objects of children types and + associating them with their immediate child type. + + Example + ------- + .. code-block:: python + + OuterType ::= CHOICE { + innerType INTEGER + } + + Calling *.tagMap* on *OuterType* will yield a map like this: + + .. code-block:: python + + Integer.tagSet -> Choice + """ + return self.__nonUniqueTagMap + + @property + def tagMapUnique(self): + """Return a *TagMap* object from unique tags and types recursively. + + Return a :class:`~pyasn1.type.tagmap.TagMap` object by + combining tags from *TagMap* objects of children types and + associating them with their immediate child type. + + Example + ------- + .. code-block:: python + + OuterType ::= CHOICE { + innerType INTEGER + } + + Calling *.tagMapUnique* on *OuterType* will yield a map like this: + + .. code-block:: python + + Integer.tagSet -> Choice + + Note + ---- + + Duplicate *TagSet* objects found in the tree of children + types would cause error. + """ + return self.__uniqueTagMap + + @property + def hasOptionalOrDefault(self): + return self.__hasOptionalOrDefault + + @property + def hasOpenTypes(self): + return self.__hasOpenTypes + + @property + def namedTypes(self): + return tuple(self.__namedTypes) + + @property + def requiredComponents(self): + return self.__requiredComponents diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/namedval.py b/.venv/lib/python3.12/site-packages/pyasn1/type/namedval.py new file mode 100644 index 00000000..46a6496d --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/namedval.py @@ -0,0 +1,192 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +# ASN.1 named integers +# +from pyasn1 import error + +__all__ = ['NamedValues'] + + +class NamedValues(object): + """Create named values object. + + The |NamedValues| object represents a collection of string names + associated with numeric IDs. These objects are used for giving + names to otherwise numerical values. + + |NamedValues| objects are immutable and duck-type Python + :class:`dict` object mapping ID to name and vice-versa. + + Parameters + ---------- + *args: variable number of two-element :py:class:`tuple` + + name: :py:class:`str` + Value label + + value: :py:class:`int` + Numeric value + + Keyword Args + ------------ + name: :py:class:`str` + Value label + + value: :py:class:`int` + Numeric value + + Examples + -------- + + .. code-block:: pycon + + >>> nv = NamedValues('a', 'b', ('c', 0), d=1) + >>> nv + >>> {'c': 0, 'd': 1, 'a': 2, 'b': 3} + >>> nv[0] + 'c' + >>> nv['a'] + 2 + """ + def __init__(self, *args, **kwargs): + self.__names = {} + self.__numbers = {} + + anonymousNames = [] + + for namedValue in args: + if isinstance(namedValue, (tuple, list)): + try: + name, number = namedValue + + except ValueError: + raise error.PyAsn1Error('Not a proper attribute-value pair %r' % (namedValue,)) + + else: + anonymousNames.append(namedValue) + continue + + if name in self.__names: + raise error.PyAsn1Error('Duplicate name %s' % (name,)) + + if number in self.__numbers: + raise error.PyAsn1Error('Duplicate number %s=%s' % (name, number)) + + self.__names[name] = number + self.__numbers[number] = name + + for name, number in kwargs.items(): + if name in self.__names: + raise error.PyAsn1Error('Duplicate name %s' % (name,)) + + if number in self.__numbers: + raise error.PyAsn1Error('Duplicate number %s=%s' % (name, number)) + + self.__names[name] = number + self.__numbers[number] = name + + if anonymousNames: + + number = self.__numbers and max(self.__numbers) + 1 or 0 + + for name in anonymousNames: + + if name in self.__names: + raise error.PyAsn1Error('Duplicate name %s' % (name,)) + + self.__names[name] = number + self.__numbers[number] = name + + number += 1 + + def __repr__(self): + representation = ', '.join(['%s=%d' % x for x in self.items()]) + + if len(representation) > 64: + representation = representation[:32] + '...' + representation[-32:] + + return '<%s object, enums %s>' % ( + self.__class__.__name__, representation) + + def __eq__(self, other): + return dict(self) == other + + def __ne__(self, other): + return dict(self) != other + + def __lt__(self, other): + return dict(self) < other + + def __le__(self, other): + return dict(self) <= other + + def __gt__(self, other): + return dict(self) > other + + def __ge__(self, other): + return dict(self) >= other + + def __hash__(self): + return hash(self.items()) + + # Python dict protocol (read-only) + + def __getitem__(self, key): + try: + return self.__numbers[key] + + except KeyError: + return self.__names[key] + + def __len__(self): + return len(self.__names) + + def __contains__(self, key): + return key in self.__names or key in self.__numbers + + def __iter__(self): + return iter(self.__names) + + def values(self): + return iter(self.__numbers) + + def keys(self): + return iter(self.__names) + + def items(self): + for name in self.__names: + yield name, self.__names[name] + + # support merging + + def __add__(self, namedValues): + return self.__class__(*tuple(self.items()) + tuple(namedValues.items())) + + # XXX clone/subtype? + + def clone(self, *args, **kwargs): + new = self.__class__(*args, **kwargs) + return self + new + + # legacy protocol + + def getName(self, value): + if value in self.__numbers: + return self.__numbers[value] + + def getValue(self, name): + if name in self.__names: + return self.__names[name] + + def getValues(self, *names): + try: + return [self.__names[name] for name in names] + + except KeyError: + raise error.PyAsn1Error( + 'Unknown bit identifier(s): %s' % (set(names).difference(self.__names),) + ) diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/opentype.py b/.venv/lib/python3.12/site-packages/pyasn1/type/opentype.py new file mode 100644 index 00000000..5a15f896 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/opentype.py @@ -0,0 +1,104 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# + +__all__ = ['OpenType'] + + +class OpenType(object): + """Create ASN.1 type map indexed by a value + + The *OpenType* object models an untyped field of a constructed ASN.1 + type. In ASN.1 syntax it is usually represented by the + `ANY DEFINED BY` for scalars or `SET OF ANY DEFINED BY`, + `SEQUENCE OF ANY DEFINED BY` for container types clauses. Typically + used together with :class:`~pyasn1.type.univ.Any` object. + + OpenType objects duck-type a read-only Python :class:`dict` objects, + however the passed `typeMap` is not copied, but stored by reference. + That means the user can manipulate `typeMap` at run time having this + reflected on *OpenType* object behavior. + + The |OpenType| class models an untyped field of a constructed ASN.1 + type. In ASN.1 syntax it is usually represented by the + `ANY DEFINED BY` for scalars or `SET OF ANY DEFINED BY`, + `SEQUENCE OF ANY DEFINED BY` for container types clauses. Typically + used with :class:`~pyasn1.type.univ.Any` type. + + Parameters + ---------- + name: :py:class:`str` + Field name + + typeMap: :py:class:`dict` + A map of value->ASN.1 type. It's stored by reference and can be + mutated later to register new mappings. + + Examples + -------- + + For untyped scalars: + + .. code-block:: python + + openType = OpenType( + 'id', {1: Integer(), + 2: OctetString()} + ) + Sequence( + componentType=NamedTypes( + NamedType('id', Integer()), + NamedType('blob', Any(), openType=openType) + ) + ) + + For untyped `SET OF` or `SEQUENCE OF` vectors: + + .. code-block:: python + + openType = OpenType( + 'id', {1: Integer(), + 2: OctetString()} + ) + Sequence( + componentType=NamedTypes( + NamedType('id', Integer()), + NamedType('blob', SetOf(componentType=Any()), + openType=openType) + ) + ) + """ + + def __init__(self, name, typeMap=None): + self.__name = name + if typeMap is None: + self.__typeMap = {} + else: + self.__typeMap = typeMap + + @property + def name(self): + return self.__name + + # Python dict protocol + + def values(self): + return self.__typeMap.values() + + def keys(self): + return self.__typeMap.keys() + + def items(self): + return self.__typeMap.items() + + def __contains__(self, key): + return key in self.__typeMap + + def __getitem__(self, key): + return self.__typeMap[key] + + def __iter__(self): + return iter(self.__typeMap) diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/tag.py b/.venv/lib/python3.12/site-packages/pyasn1/type/tag.py new file mode 100644 index 00000000..ccb8b00c --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/tag.py @@ -0,0 +1,335 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +from pyasn1 import error + +__all__ = ['tagClassUniversal', 'tagClassApplication', 'tagClassContext', + 'tagClassPrivate', 'tagFormatSimple', 'tagFormatConstructed', + 'tagCategoryImplicit', 'tagCategoryExplicit', + 'tagCategoryUntagged', 'Tag', 'TagSet'] + +#: Identifier for ASN.1 class UNIVERSAL +tagClassUniversal = 0x00 + +#: Identifier for ASN.1 class APPLICATION +tagClassApplication = 0x40 + +#: Identifier for ASN.1 class context-specific +tagClassContext = 0x80 + +#: Identifier for ASN.1 class private +tagClassPrivate = 0xC0 + +#: Identifier for "simple" ASN.1 structure (e.g. scalar) +tagFormatSimple = 0x00 + +#: Identifier for "constructed" ASN.1 structure (e.g. may have inner components) +tagFormatConstructed = 0x20 + +tagCategoryImplicit = 0x01 +tagCategoryExplicit = 0x02 +tagCategoryUntagged = 0x04 + + +class Tag(object): + """Create ASN.1 tag + + Represents ASN.1 tag that can be attached to a ASN.1 type to make + types distinguishable from each other. + + *Tag* objects are immutable and duck-type Python :class:`tuple` objects + holding three integer components of a tag. + + Parameters + ---------- + tagClass: :py:class:`int` + Tag *class* value + + tagFormat: :py:class:`int` + Tag *format* value + + tagId: :py:class:`int` + Tag ID value + """ + def __init__(self, tagClass, tagFormat, tagId): + if tagId < 0: + raise error.PyAsn1Error('Negative tag ID (%s) not allowed' % tagId) + self.__tagClass = tagClass + self.__tagFormat = tagFormat + self.__tagId = tagId + self.__tagClassId = tagClass, tagId + self.__hash = hash(self.__tagClassId) + + def __repr__(self): + representation = '[%s:%s:%s]' % ( + self.__tagClass, self.__tagFormat, self.__tagId) + return '<%s object, tag %s>' % ( + self.__class__.__name__, representation) + + def __eq__(self, other): + return self.__tagClassId == other + + def __ne__(self, other): + return self.__tagClassId != other + + def __lt__(self, other): + return self.__tagClassId < other + + def __le__(self, other): + return self.__tagClassId <= other + + def __gt__(self, other): + return self.__tagClassId > other + + def __ge__(self, other): + return self.__tagClassId >= other + + def __hash__(self): + return self.__hash + + def __getitem__(self, idx): + if idx == 0: + return self.__tagClass + elif idx == 1: + return self.__tagFormat + elif idx == 2: + return self.__tagId + else: + raise IndexError + + def __iter__(self): + yield self.__tagClass + yield self.__tagFormat + yield self.__tagId + + def __and__(self, otherTag): + return self.__class__(self.__tagClass & otherTag.tagClass, + self.__tagFormat & otherTag.tagFormat, + self.__tagId & otherTag.tagId) + + def __or__(self, otherTag): + return self.__class__(self.__tagClass | otherTag.tagClass, + self.__tagFormat | otherTag.tagFormat, + self.__tagId | otherTag.tagId) + + @property + def tagClass(self): + """ASN.1 tag class + + Returns + ------- + : :py:class:`int` + Tag class + """ + return self.__tagClass + + @property + def tagFormat(self): + """ASN.1 tag format + + Returns + ------- + : :py:class:`int` + Tag format + """ + return self.__tagFormat + + @property + def tagId(self): + """ASN.1 tag ID + + Returns + ------- + : :py:class:`int` + Tag ID + """ + return self.__tagId + + +class TagSet(object): + """Create a collection of ASN.1 tags + + Represents a combination of :class:`~pyasn1.type.tag.Tag` objects + that can be attached to a ASN.1 type to make types distinguishable + from each other. + + *TagSet* objects are immutable and duck-type Python :class:`tuple` objects + holding arbitrary number of :class:`~pyasn1.type.tag.Tag` objects. + + Parameters + ---------- + baseTag: :class:`~pyasn1.type.tag.Tag` + Base *Tag* object. This tag survives IMPLICIT tagging. + + *superTags: :class:`~pyasn1.type.tag.Tag` + Additional *Tag* objects taking part in subtyping. + + Examples + -------- + .. code-block:: python + + class OrderNumber(NumericString): + ''' + ASN.1 specification + + Order-number ::= + [APPLICATION 5] IMPLICIT NumericString + ''' + tagSet = NumericString.tagSet.tagImplicitly( + Tag(tagClassApplication, tagFormatSimple, 5) + ) + + orderNumber = OrderNumber('1234') + """ + def __init__(self, baseTag=(), *superTags): + self.__baseTag = baseTag + self.__superTags = superTags + self.__superTagsClassId = tuple( + [(superTag.tagClass, superTag.tagId) for superTag in superTags] + ) + self.__lenOfSuperTags = len(superTags) + self.__hash = hash(self.__superTagsClassId) + + def __repr__(self): + representation = '-'.join(['%s:%s:%s' % (x.tagClass, x.tagFormat, x.tagId) + for x in self.__superTags]) + if representation: + representation = 'tags ' + representation + else: + representation = 'untagged' + + return '<%s object, %s>' % (self.__class__.__name__, representation) + + def __add__(self, superTag): + return self.__class__(self.__baseTag, *self.__superTags + (superTag,)) + + def __radd__(self, superTag): + return self.__class__(self.__baseTag, *(superTag,) + self.__superTags) + + def __getitem__(self, i): + if i.__class__ is slice: + return self.__class__(self.__baseTag, *self.__superTags[i]) + else: + return self.__superTags[i] + + def __eq__(self, other): + return self.__superTagsClassId == other + + def __ne__(self, other): + return self.__superTagsClassId != other + + def __lt__(self, other): + return self.__superTagsClassId < other + + def __le__(self, other): + return self.__superTagsClassId <= other + + def __gt__(self, other): + return self.__superTagsClassId > other + + def __ge__(self, other): + return self.__superTagsClassId >= other + + def __hash__(self): + return self.__hash + + def __len__(self): + return self.__lenOfSuperTags + + @property + def baseTag(self): + """Return base ASN.1 tag + + Returns + ------- + : :class:`~pyasn1.type.tag.Tag` + Base tag of this *TagSet* + """ + return self.__baseTag + + @property + def superTags(self): + """Return ASN.1 tags + + Returns + ------- + : :py:class:`tuple` + Tuple of :class:`~pyasn1.type.tag.Tag` objects that this *TagSet* contains + """ + return self.__superTags + + def tagExplicitly(self, superTag): + """Return explicitly tagged *TagSet* + + Create a new *TagSet* representing callee *TagSet* explicitly tagged + with passed tag(s). With explicit tagging mode, new tags are appended + to existing tag(s). + + Parameters + ---------- + superTag: :class:`~pyasn1.type.tag.Tag` + *Tag* object to tag this *TagSet* + + Returns + ------- + : :class:`~pyasn1.type.tag.TagSet` + New *TagSet* object + """ + if superTag.tagClass == tagClassUniversal: + raise error.PyAsn1Error("Can't tag with UNIVERSAL class tag") + if superTag.tagFormat != tagFormatConstructed: + superTag = Tag(superTag.tagClass, tagFormatConstructed, superTag.tagId) + return self + superTag + + def tagImplicitly(self, superTag): + """Return implicitly tagged *TagSet* + + Create a new *TagSet* representing callee *TagSet* implicitly tagged + with passed tag(s). With implicit tagging mode, new tag(s) replace the + last existing tag. + + Parameters + ---------- + superTag: :class:`~pyasn1.type.tag.Tag` + *Tag* object to tag this *TagSet* + + Returns + ------- + : :class:`~pyasn1.type.tag.TagSet` + New *TagSet* object + """ + if self.__superTags: + superTag = Tag(superTag.tagClass, self.__superTags[-1].tagFormat, superTag.tagId) + return self[:-1] + superTag + + def isSuperTagSetOf(self, tagSet): + """Test type relationship against given *TagSet* + + The callee is considered to be a supertype of given *TagSet* + tag-wise if all tags in *TagSet* are present in the callee and + they are in the same order. + + Parameters + ---------- + tagSet: :class:`~pyasn1.type.tag.TagSet` + *TagSet* object to evaluate against the callee + + Returns + ------- + : :py:class:`bool` + :obj:`True` if callee is a supertype of *tagSet* + """ + if len(tagSet) < self.__lenOfSuperTags: + return False + return self.__superTags == tagSet[:self.__lenOfSuperTags] + + # Backward compatibility + + def getBaseTag(self): + return self.__baseTag + +def initTagSet(tag): + return TagSet(tag, tag) diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/tagmap.py b/.venv/lib/python3.12/site-packages/pyasn1/type/tagmap.py new file mode 100644 index 00000000..7f8a955a --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/tagmap.py @@ -0,0 +1,96 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +from pyasn1 import error + +__all__ = ['TagMap'] + + +class TagMap(object): + """Map *TagSet* objects to ASN.1 types + + Create an object mapping *TagSet* object to ASN.1 type. + + *TagMap* objects are immutable and duck-type read-only Python + :class:`dict` objects holding *TagSet* objects as keys and ASN.1 + type objects as values. + + Parameters + ---------- + presentTypes: :py:class:`dict` + Map of :class:`~pyasn1.type.tag.TagSet` to ASN.1 objects considered + as being unconditionally present in the *TagMap*. + + skipTypes: :py:class:`dict` + A collection of :class:`~pyasn1.type.tag.TagSet` objects considered + as absent in the *TagMap* even when *defaultType* is present. + + defaultType: ASN.1 type object + An ASN.1 type object callee *TagMap* returns for any *TagSet* key not present + in *presentTypes* (unless given key is present in *skipTypes*). + """ + def __init__(self, presentTypes=None, skipTypes=None, defaultType=None): + self.__presentTypes = presentTypes or {} + self.__skipTypes = skipTypes or {} + self.__defaultType = defaultType + + def __contains__(self, tagSet): + return (tagSet in self.__presentTypes or + self.__defaultType is not None and tagSet not in self.__skipTypes) + + def __getitem__(self, tagSet): + try: + return self.__presentTypes[tagSet] + except KeyError: + if self.__defaultType is None: + raise + elif tagSet in self.__skipTypes: + raise error.PyAsn1Error('Key in negative map') + else: + return self.__defaultType + + def __iter__(self): + return iter(self.__presentTypes) + + def __repr__(self): + representation = '%s object' % self.__class__.__name__ + + if self.__presentTypes: + representation += ', present %s' % repr(self.__presentTypes) + + if self.__skipTypes: + representation += ', skip %s' % repr(self.__skipTypes) + + if self.__defaultType is not None: + representation += ', default %s' % repr(self.__defaultType) + + return '<%s>' % representation + + @property + def presentTypes(self): + """Return *TagSet* to ASN.1 type map present in callee *TagMap*""" + return self.__presentTypes + + @property + def skipTypes(self): + """Return *TagSet* collection unconditionally absent in callee *TagMap*""" + return self.__skipTypes + + @property + def defaultType(self): + """Return default ASN.1 type being returned for any missing *TagSet*""" + return self.__defaultType + + # Backward compatibility + + def getPosMap(self): + return self.presentTypes + + def getNegMap(self): + return self.skipTypes + + def getDef(self): + return self.defaultType diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/univ.py b/.venv/lib/python3.12/site-packages/pyasn1/type/univ.py new file mode 100644 index 00000000..9aff5e69 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/univ.py @@ -0,0 +1,3327 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +import math +import sys + +from pyasn1 import error +from pyasn1.codec.ber import eoo +from pyasn1.compat import integer +from pyasn1.type import base +from pyasn1.type import constraint +from pyasn1.type import namedtype +from pyasn1.type import namedval +from pyasn1.type import tag +from pyasn1.type import tagmap + +NoValue = base.NoValue +noValue = NoValue() + +__all__ = ['Integer', 'Boolean', 'BitString', 'OctetString', 'Null', + 'ObjectIdentifier', 'Real', 'Enumerated', + 'SequenceOfAndSetOfBase', 'SequenceOf', 'SetOf', + 'SequenceAndSetBase', 'Sequence', 'Set', 'Choice', 'Any', + 'NoValue', 'noValue'] + +# "Simple" ASN.1 types (yet incomplete) + + +class Integer(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`int` objects. + + Keyword Args + ------------ + value: :class:`int`, :class:`str` or |ASN.1| object + Python :class:`int` or :class:`str` literal or |ASN.1| class + instance. If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + namedValues: :py:class:`~pyasn1.type.namedval.NamedValues` + Object representing non-default symbolic aliases for numbers + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + + .. code-block:: python + + class ErrorCode(Integer): + ''' + ASN.1 specification: + + ErrorCode ::= + INTEGER { disk-full(1), no-disk(-1), + disk-not-formatted(2) } + + error ErrorCode ::= disk-full + ''' + namedValues = NamedValues( + ('disk-full', 1), ('no-disk', -1), + ('disk-not-formatted', 2) + ) + + error = ErrorCode('disk-full') + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x02) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + #: Default :py:class:`~pyasn1.type.namedval.NamedValues` object + #: representing symbolic aliases for numbers + namedValues = namedval.NamedValues() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + def __init__(self, value=noValue, **kwargs): + if 'namedValues' not in kwargs: + kwargs['namedValues'] = self.namedValues + + base.SimpleAsn1Type.__init__(self, value, **kwargs) + + def __and__(self, value): + return self.clone(self._value & value) + + def __rand__(self, value): + return self.clone(value & self._value) + + def __or__(self, value): + return self.clone(self._value | value) + + def __ror__(self, value): + return self.clone(value | self._value) + + def __xor__(self, value): + return self.clone(self._value ^ value) + + def __rxor__(self, value): + return self.clone(value ^ self._value) + + def __lshift__(self, value): + return self.clone(self._value << value) + + def __rshift__(self, value): + return self.clone(self._value >> value) + + def __add__(self, value): + return self.clone(self._value + value) + + def __radd__(self, value): + return self.clone(value + self._value) + + def __sub__(self, value): + return self.clone(self._value - value) + + def __rsub__(self, value): + return self.clone(value - self._value) + + def __mul__(self, value): + return self.clone(self._value * value) + + def __rmul__(self, value): + return self.clone(value * self._value) + + def __mod__(self, value): + return self.clone(self._value % value) + + def __rmod__(self, value): + return self.clone(value % self._value) + + def __pow__(self, value, modulo=None): + return self.clone(pow(self._value, value, modulo)) + + def __rpow__(self, value): + return self.clone(pow(value, self._value)) + + def __floordiv__(self, value): + return self.clone(self._value // value) + + def __rfloordiv__(self, value): + return self.clone(value // self._value) + + def __truediv__(self, value): + return Real(self._value / value) + + def __rtruediv__(self, value): + return Real(value / self._value) + + def __divmod__(self, value): + return self.clone(divmod(self._value, value)) + + def __rdivmod__(self, value): + return self.clone(divmod(value, self._value)) + + __hash__ = base.SimpleAsn1Type.__hash__ + + def __int__(self): + return int(self._value) + + def __float__(self): + return float(self._value) + + def __abs__(self): + return self.clone(abs(self._value)) + + def __index__(self): + return int(self._value) + + def __pos__(self): + return self.clone(+self._value) + + def __neg__(self): + return self.clone(-self._value) + + def __invert__(self): + return self.clone(~self._value) + + def __round__(self, n=0): + r = round(self._value, n) + if n: + return self.clone(r) + else: + return r + + def __floor__(self): + return math.floor(self._value) + + def __ceil__(self): + return math.ceil(self._value) + + def __trunc__(self): + return self.clone(math.trunc(self._value)) + + def __lt__(self, value): + return self._value < value + + def __le__(self, value): + return self._value <= value + + def __eq__(self, value): + return self._value == value + + def __ne__(self, value): + return self._value != value + + def __gt__(self, value): + return self._value > value + + def __ge__(self, value): + return self._value >= value + + def prettyIn(self, value): + try: + return int(value) + + except ValueError: + try: + return self.namedValues[value] + + except KeyError as exc: + raise error.PyAsn1Error( + 'Can\'t coerce %r into integer: %s' % (value, exc) + ) + + def prettyOut(self, value): + try: + return str(self.namedValues[value]) + + except KeyError: + return str(value) + + # backward compatibility + + def getNamedValues(self): + return self.namedValues + + +class Boolean(Integer): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`int` objects. + + Keyword Args + ------------ + value: :class:`int`, :class:`str` or |ASN.1| object + Python :class:`int` or :class:`str` literal or |ASN.1| class + instance. If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s).Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + namedValues: :py:class:`~pyasn1.type.namedval.NamedValues` + Object representing non-default symbolic aliases for numbers + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class RoundResult(Boolean): + ''' + ASN.1 specification: + + RoundResult ::= BOOLEAN + + ok RoundResult ::= TRUE + ko RoundResult ::= FALSE + ''' + ok = RoundResult(True) + ko = RoundResult(False) + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x01), + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = Integer.subtypeSpec + constraint.SingleValueConstraint(0, 1) + + #: Default :py:class:`~pyasn1.type.namedval.NamedValues` object + #: representing symbolic aliases for numbers + namedValues = namedval.NamedValues(('False', 0), ('True', 1)) + + # Optimization for faster codec lookup + typeId = Integer.getTypeId() + + +class SizedInteger(int): + bitLength = leadingZeroBits = None + + def setBitLength(self, bitLength): + self.bitLength = bitLength + self.leadingZeroBits = max(bitLength - self.bit_length(), 0) + return self + + def __len__(self): + if self.bitLength is None: + self.setBitLength(self.bit_length()) + + return self.bitLength + + +class BitString(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type both Python :class:`tuple` (as a tuple + of bits) and :class:`int` objects. + + Keyword Args + ------------ + value: :class:`int`, :class:`str` or |ASN.1| object + Python :class:`int` or :class:`str` literal representing binary + or hexadecimal number or sequence of integer bits or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + namedValues: :py:class:`~pyasn1.type.namedval.NamedValues` + Object representing non-default symbolic aliases for numbers + + binValue: :py:class:`str` + Binary string initializer to use instead of the *value*. + Example: '10110011'. + + hexValue: :py:class:`str` + Hexadecimal string initializer to use instead of the *value*. + Example: 'DEADBEEF'. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class Rights(BitString): + ''' + ASN.1 specification: + + Rights ::= BIT STRING { user-read(0), user-write(1), + group-read(2), group-write(3), + other-read(4), other-write(5) } + + group1 Rights ::= { group-read, group-write } + group2 Rights ::= '0011'B + group3 Rights ::= '3'H + ''' + namedValues = NamedValues( + ('user-read', 0), ('user-write', 1), + ('group-read', 2), ('group-write', 3), + ('other-read', 4), ('other-write', 5) + ) + + group1 = Rights(('group-read', 'group-write')) + group2 = Rights('0011') + group3 = Rights(0x3) + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x03) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + #: Default :py:class:`~pyasn1.type.namedval.NamedValues` object + #: representing symbolic aliases for numbers + namedValues = namedval.NamedValues() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + defaultBinValue = defaultHexValue = noValue + + def __init__(self, value=noValue, **kwargs): + if value is noValue: + if kwargs: + try: + value = self.fromBinaryString(kwargs.pop('binValue'), internalFormat=True) + + except KeyError: + pass + + try: + value = self.fromHexString(kwargs.pop('hexValue'), internalFormat=True) + + except KeyError: + pass + + if value is noValue: + if self.defaultBinValue is not noValue: + value = self.fromBinaryString(self.defaultBinValue, internalFormat=True) + + elif self.defaultHexValue is not noValue: + value = self.fromHexString(self.defaultHexValue, internalFormat=True) + + if 'namedValues' not in kwargs: + kwargs['namedValues'] = self.namedValues + + base.SimpleAsn1Type.__init__(self, value, **kwargs) + + def __str__(self): + return self.asBinary() + + def __eq__(self, other): + other = self.prettyIn(other) + return self is other or self._value == other and len(self._value) == len(other) + + def __ne__(self, other): + other = self.prettyIn(other) + return self._value != other or len(self._value) != len(other) + + def __lt__(self, other): + other = self.prettyIn(other) + return len(self._value) < len(other) or len(self._value) == len(other) and self._value < other + + def __le__(self, other): + other = self.prettyIn(other) + return len(self._value) <= len(other) or len(self._value) == len(other) and self._value <= other + + def __gt__(self, other): + other = self.prettyIn(other) + return len(self._value) > len(other) or len(self._value) == len(other) and self._value > other + + def __ge__(self, other): + other = self.prettyIn(other) + return len(self._value) >= len(other) or len(self._value) == len(other) and self._value >= other + + # Immutable sequence object protocol + + def __len__(self): + return len(self._value) + + def __getitem__(self, i): + if i.__class__ is slice: + return self.clone([self[x] for x in range(*i.indices(len(self)))]) + else: + length = len(self._value) - 1 + if i > length or i < 0: + raise IndexError('bit index out of range') + return (self._value >> (length - i)) & 1 + + def __iter__(self): + length = len(self._value) + while length: + length -= 1 + yield (self._value >> length) & 1 + + def __reversed__(self): + return reversed(tuple(self)) + + # arithmetic operators + + def __add__(self, value): + value = self.prettyIn(value) + return self.clone(SizedInteger(self._value << len(value) | value).setBitLength(len(self._value) + len(value))) + + def __radd__(self, value): + value = self.prettyIn(value) + return self.clone(SizedInteger(value << len(self._value) | self._value).setBitLength(len(self._value) + len(value))) + + def __mul__(self, value): + bitString = self._value + while value > 1: + bitString <<= len(self._value) + bitString |= self._value + value -= 1 + return self.clone(bitString) + + def __rmul__(self, value): + return self * value + + def __lshift__(self, count): + return self.clone(SizedInteger(self._value << count).setBitLength(len(self._value) + count)) + + def __rshift__(self, count): + return self.clone(SizedInteger(self._value >> count).setBitLength(max(0, len(self._value) - count))) + + def __int__(self): + return int(self._value) + + def __float__(self): + return float(self._value) + + def asNumbers(self): + """Get |ASN.1| value as a sequence of 8-bit integers. + + If |ASN.1| object length is not a multiple of 8, result + will be left-padded with zeros. + """ + return tuple(self.asOctets()) + + def asOctets(self): + """Get |ASN.1| value as a sequence of octets. + + If |ASN.1| object length is not a multiple of 8, result + will be left-padded with zeros. + """ + return integer.to_bytes(self._value, length=len(self)) + + def asInteger(self): + """Get |ASN.1| value as a single integer value. + """ + return self._value + + def asBinary(self): + """Get |ASN.1| value as a text string of bits. + """ + binString = bin(self._value)[2:] + return '0' * (len(self._value) - len(binString)) + binString + + @classmethod + def fromHexString(cls, value, internalFormat=False, prepend=None): + """Create a |ASN.1| object initialized from the hex string. + + Parameters + ---------- + value: :class:`str` + Text string like 'DEADBEEF' + """ + try: + value = SizedInteger(value, 16).setBitLength(len(value) * 4) + + except ValueError as exc: + raise error.PyAsn1Error('%s.fromHexString() error: %s' % (cls.__name__, exc)) + + if prepend is not None: + value = SizedInteger( + (SizedInteger(prepend) << len(value)) | value + ).setBitLength(len(prepend) + len(value)) + + if not internalFormat: + value = cls(value) + + return value + + @classmethod + def fromBinaryString(cls, value, internalFormat=False, prepend=None): + """Create a |ASN.1| object initialized from a string of '0' and '1'. + + Parameters + ---------- + value: :class:`str` + Text string like '1010111' + """ + try: + value = SizedInteger(value or '0', 2).setBitLength(len(value)) + + except ValueError as exc: + raise error.PyAsn1Error('%s.fromBinaryString() error: %s' % (cls.__name__, exc)) + + if prepend is not None: + value = SizedInteger( + (SizedInteger(prepend) << len(value)) | value + ).setBitLength(len(prepend) + len(value)) + + if not internalFormat: + value = cls(value) + + return value + + @classmethod + def fromOctetString(cls, value, internalFormat=False, prepend=None, padding=0): + """Create a |ASN.1| object initialized from a string. + + Parameters + ---------- + value: :class:`bytes` + Text string like b'\\\\x01\\\\xff' + """ + value = SizedInteger(int.from_bytes(bytes(value), 'big') >> padding).setBitLength(len(value) * 8 - padding) + + if prepend is not None: + value = SizedInteger( + (SizedInteger(prepend) << len(value)) | value + ).setBitLength(len(prepend) + len(value)) + + if not internalFormat: + value = cls(value) + + return value + + def prettyIn(self, value): + if isinstance(value, SizedInteger): + return value + elif isinstance(value, str): + if not value: + return SizedInteger(0).setBitLength(0) + + elif value[0] == '\'': # "'1011'B" -- ASN.1 schema representation (deprecated) + if value[-2:] == '\'B': + return self.fromBinaryString(value[1:-2], internalFormat=True) + elif value[-2:] == '\'H': + return self.fromHexString(value[1:-2], internalFormat=True) + else: + raise error.PyAsn1Error( + 'Bad BIT STRING value notation %s' % (value,) + ) + + elif self.namedValues and not value.isdigit(): # named bits like 'Urgent, Active' + names = [x.strip() for x in value.split(',')] + + try: + + bitPositions = [self.namedValues[name] for name in names] + + except KeyError: + raise error.PyAsn1Error('unknown bit name(s) in %r' % (names,)) + + rightmostPosition = max(bitPositions) + + number = 0 + for bitPosition in bitPositions: + number |= 1 << (rightmostPosition - bitPosition) + + return SizedInteger(number).setBitLength(rightmostPosition + 1) + + elif value.startswith('0x'): + return self.fromHexString(value[2:], internalFormat=True) + + elif value.startswith('0b'): + return self.fromBinaryString(value[2:], internalFormat=True) + + else: # assume plain binary string like '1011' + return self.fromBinaryString(value, internalFormat=True) + + elif isinstance(value, (tuple, list)): + return self.fromBinaryString(''.join([b and '1' or '0' for b in value]), internalFormat=True) + + elif isinstance(value, BitString): + return SizedInteger(value).setBitLength(len(value)) + + elif isinstance(value, int): + return SizedInteger(value) + + else: + raise error.PyAsn1Error( + 'Bad BitString initializer type \'%s\'' % (value,) + ) + + +class OctetString(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type :class:`bytes`. + When used in Unicode context, |ASN.1| type + assumes "|encoding|" serialisation. + + Keyword Args + ------------ + value: :class:`unicode`, :class:`str`, :class:`bytes` or |ASN.1| object + :class:`bytes`, alternatively :class:`str` + representing character string to be serialised into octets + (note `encoding` parameter) or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + encoding: :py:class:`str` + Unicode codec ID to encode/decode + :class:`str` the payload when |ASN.1| object is used + in text string context. + + binValue: :py:class:`str` + Binary string initializer to use instead of the *value*. + Example: '10110011'. + + hexValue: :py:class:`str` + Hexadecimal string initializer to use instead of the *value*. + Example: 'DEADBEEF'. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class Icon(OctetString): + ''' + ASN.1 specification: + + Icon ::= OCTET STRING + + icon1 Icon ::= '001100010011001000110011'B + icon2 Icon ::= '313233'H + ''' + icon1 = Icon.fromBinaryString('001100010011001000110011') + icon2 = Icon.fromHexString('313233') + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x04) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + defaultBinValue = defaultHexValue = noValue + encoding = 'iso-8859-1' + + def __init__(self, value=noValue, **kwargs): + if kwargs: + if value is noValue: + try: + value = self.fromBinaryString(kwargs.pop('binValue')) + + except KeyError: + pass + + try: + value = self.fromHexString(kwargs.pop('hexValue')) + + except KeyError: + pass + + if value is noValue: + if self.defaultBinValue is not noValue: + value = self.fromBinaryString(self.defaultBinValue) + + elif self.defaultHexValue is not noValue: + value = self.fromHexString(self.defaultHexValue) + + if 'encoding' not in kwargs: + kwargs['encoding'] = self.encoding + + base.SimpleAsn1Type.__init__(self, value, **kwargs) + + def prettyIn(self, value): + if isinstance(value, bytes): + return value + + elif isinstance(value, str): + try: + return value.encode(self.encoding) + + except UnicodeEncodeError as exc: + raise error.PyAsn1UnicodeEncodeError( + "Can't encode string '%s' with '%s' " + "codec" % (value, self.encoding), exc + ) + elif isinstance(value, OctetString): # a shortcut, bytes() would work the same way + return value.asOctets() + + elif isinstance(value, base.SimpleAsn1Type): # this mostly targets Integer objects + return self.prettyIn(str(value)) + + elif isinstance(value, (tuple, list)): + return self.prettyIn(bytes(value)) + + else: + return bytes(value) + + def __str__(self): + try: + return self._value.decode(self.encoding) + + except UnicodeDecodeError as exc: + raise error.PyAsn1UnicodeDecodeError( + "Can't decode string '%s' with '%s' codec at " + "'%s'" % (self._value, self.encoding, + self.__class__.__name__), exc + ) + + def __bytes__(self): + return bytes(self._value) + + def asOctets(self): + return bytes(self._value) + + def asNumbers(self): + return tuple(self._value) + + # + # Normally, `.prettyPrint()` is called from `__str__()`. Historically, + # OctetString.prettyPrint() used to return hexified payload + # representation in cases when non-printable content is present. At the + # same time `str()` used to produce either octet-stream (Py2) or + # text (Py3) representations. + # + # Therefore `OctetString.__str__()` -> `.prettyPrint()` call chain is + # reversed to preserve the original behaviour. + # + # Eventually we should deprecate `.prettyPrint()` / `.prettyOut()` harness + # and end up with just `__str__()` producing hexified representation while + # both text and octet-stream representation should only be requested via + # the `.asOctets()` method. + # + # Note: ASN.1 OCTET STRING is never mean to contain text! + # + + def prettyOut(self, value): + return value + + def prettyPrint(self, scope=0): + # first see if subclass has its own .prettyOut() + value = self.prettyOut(self._value) + + if value is not self._value: + return value + + numbers = self.asNumbers() + + for x in numbers: + # hexify if needed + if x < 32 or x > 126: + return '0x' + ''.join(('%.2x' % x for x in numbers)) + else: + # this prevents infinite recursion + return OctetString.__str__(self) + + @staticmethod + def fromBinaryString(value): + """Create a |ASN.1| object initialized from a string of '0' and '1'. + + Parameters + ---------- + value: :class:`str` + Text string like '1010111' + """ + bitNo = 8 + byte = 0 + r = [] + for v in value: + if bitNo: + bitNo -= 1 + else: + bitNo = 7 + r.append(byte) + byte = 0 + if v in ('0', '1'): + v = int(v) + else: + raise error.PyAsn1Error( + 'Non-binary OCTET STRING initializer %s' % (v,) + ) + byte |= v << bitNo + + r.append(byte) + + return bytes(r) + + @staticmethod + def fromHexString(value): + """Create a |ASN.1| object initialized from the hex string. + + Parameters + ---------- + value: :class:`str` + Text string like 'DEADBEEF' + """ + r = [] + p = [] + for v in value: + if p: + r.append(int(p + v, 16)) + p = None + else: + p = v + if p: + r.append(int(p + '0', 16)) + + return bytes(r) + + # Immutable sequence object protocol + + def __len__(self): + return len(self._value) + + def __getitem__(self, i): + if i.__class__ is slice: + return self.clone(self._value[i]) + else: + return self._value[i] + + def __iter__(self): + return iter(self._value) + + def __contains__(self, value): + return value in self._value + + def __add__(self, value): + return self.clone(self._value + self.prettyIn(value)) + + def __radd__(self, value): + return self.clone(self.prettyIn(value) + self._value) + + def __mul__(self, value): + return self.clone(self._value * value) + + def __rmul__(self, value): + return self * value + + def __int__(self): + return int(self._value) + + def __float__(self): + return float(self._value) + + def __reversed__(self): + return reversed(self._value) + + +class Null(OctetString): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`str` objects + (always empty). + + Keyword Args + ------------ + value: :class:`str` or |ASN.1| object + Python empty :class:`str` literal or any object that evaluates to :obj:`False` + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class Ack(Null): + ''' + ASN.1 specification: + + Ack ::= NULL + ''' + ack = Ack('') + """ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x05) + ) + subtypeSpec = OctetString.subtypeSpec + constraint.SingleValueConstraint(b'') + + # Optimization for faster codec lookup + typeId = OctetString.getTypeId() + + def prettyIn(self, value): + if value: + return value + + return b'' + + +class ObjectIdentifier(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`tuple` objects + (tuple of non-negative integers). + + Keyword Args + ------------ + value: :class:`tuple`, :class:`str` or |ASN.1| object + Python sequence of :class:`int` or :class:`str` literal or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class ID(ObjectIdentifier): + ''' + ASN.1 specification: + + ID ::= OBJECT IDENTIFIER + + id-edims ID ::= { joint-iso-itu-t mhs-motif(6) edims(7) } + id-bp ID ::= { id-edims 11 } + ''' + id_edims = ID('2.6.7') + id_bp = id_edims + (11,) + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x06) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + def __add__(self, other): + return self.clone(self._value + other) + + def __radd__(self, other): + return self.clone(other + self._value) + + def asTuple(self): + return self._value + + # Sequence object protocol + + def __len__(self): + return len(self._value) + + def __getitem__(self, i): + if i.__class__ is slice: + return self.clone(self._value[i]) + else: + return self._value[i] + + def __iter__(self): + return iter(self._value) + + def __contains__(self, value): + return value in self._value + + def index(self, suboid): + return self._value.index(suboid) + + def isPrefixOf(self, other): + """Indicate if this |ASN.1| object is a prefix of other |ASN.1| object. + + Parameters + ---------- + other: |ASN.1| object + |ASN.1| object + + Returns + ------- + : :class:`bool` + :obj:`True` if this |ASN.1| object is a parent (e.g. prefix) of the other |ASN.1| object + or :obj:`False` otherwise. + """ + l = len(self) + if l <= len(other): + if self._value[:l] == other[:l]: + return True + return False + + def prettyIn(self, value): + if isinstance(value, ObjectIdentifier): + return tuple(value) + elif isinstance(value, str): + if '-' in value: + raise error.PyAsn1Error( + # sys.exc_info in case prettyIn was called while handling an exception + 'Malformed Object ID %s at %s: %s' % (value, self.__class__.__name__, sys.exc_info()[1]) + ) + try: + return tuple([int(subOid) for subOid in value.split('.') if subOid]) + except ValueError as exc: + raise error.PyAsn1Error( + 'Malformed Object ID %s at %s: %s' % (value, self.__class__.__name__, exc) + ) + + try: + tupleOfInts = tuple([int(subOid) for subOid in value if subOid >= 0]) + + except (ValueError, TypeError) as exc: + raise error.PyAsn1Error( + 'Malformed Object ID %s at %s: %s' % (value, self.__class__.__name__, exc) + ) + + if len(tupleOfInts) == len(value): + return tupleOfInts + + raise error.PyAsn1Error('Malformed Object ID %s at %s' % (value, self.__class__.__name__)) + + def prettyOut(self, value): + return '.'.join([str(x) for x in value]) + + +class RelativeOID(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`tuple` objects + (tuple of non-negative integers). + Keyword Args + ------------ + value: :class:`tuple`, :class:`str` or |ASN.1| object + Python sequence of :class:`int` or :class:`str` literal or |ASN.1| object. + If `value` is not given, schema object will be created. + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + Examples + -------- + .. code-block:: python + class RelOID(RelativeOID): + ''' + ASN.1 specification: + id-pad-null RELATIVE-OID ::= { 0 } + id-pad-once RELATIVE-OID ::= { 5 6 } + id-pad-twice RELATIVE-OID ::= { 5 6 7 } + ''' + id_pad_null = RelOID('0') + id_pad_once = RelOID('5.6') + id_pad_twice = id_pad_once + (7,) + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x0d) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + def __add__(self, other): + return self.clone(self._value + other) + + def __radd__(self, other): + return self.clone(other + self._value) + + def asTuple(self): + return self._value + + # Sequence object protocol + + def __len__(self): + return len(self._value) + + def __getitem__(self, i): + if i.__class__ is slice: + return self.clone(self._value[i]) + else: + return self._value[i] + + def __iter__(self): + return iter(self._value) + + def __contains__(self, value): + return value in self._value + + def index(self, suboid): + return self._value.index(suboid) + + def isPrefixOf(self, other): + """Indicate if this |ASN.1| object is a prefix of other |ASN.1| object. + Parameters + ---------- + other: |ASN.1| object + |ASN.1| object + Returns + ------- + : :class:`bool` + :obj:`True` if this |ASN.1| object is a parent (e.g. prefix) of the other |ASN.1| object + or :obj:`False` otherwise. + """ + l = len(self) + if l <= len(other): + if self._value[:l] == other[:l]: + return True + return False + + def prettyIn(self, value): + if isinstance(value, RelativeOID): + return tuple(value) + elif isinstance(value, str): + if '-' in value: + raise error.PyAsn1Error( + # sys.exc_info in case prettyIn was called while handling an exception + 'Malformed RELATIVE-OID %s at %s: %s' % (value, self.__class__.__name__, sys.exc_info()[1]) + ) + try: + return tuple([int(subOid) for subOid in value.split('.') if subOid]) + except ValueError as exc: + raise error.PyAsn1Error( + 'Malformed RELATIVE-OID %s at %s: %s' % (value, self.__class__.__name__, exc) + ) + + try: + tupleOfInts = tuple([int(subOid) for subOid in value if subOid >= 0]) + + except (ValueError, TypeError) as exc: + raise error.PyAsn1Error( + 'Malformed RELATIVE-OID %s at %s: %s' % (value, self.__class__.__name__, exc) + ) + + if len(tupleOfInts) == len(value): + return tupleOfInts + + raise error.PyAsn1Error('Malformed RELATIVE-OID %s at %s' % (value, self.__class__.__name__)) + + def prettyOut(self, value): + return '.'.join([str(x) for x in value]) + + +class Real(base.SimpleAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`float` objects. + Additionally, |ASN.1| objects behave like a :class:`tuple` in which case its + elements are mantissa, base and exponent. + + Keyword Args + ------------ + value: :class:`tuple`, :class:`float` or |ASN.1| object + Python sequence of :class:`int` (representing mantissa, base and + exponent) or :class:`float` instance or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class Pi(Real): + ''' + ASN.1 specification: + + Pi ::= REAL + + pi Pi ::= { mantissa 314159, base 10, exponent -5 } + + ''' + pi = Pi((314159, 10, -5)) + """ + binEncBase = None # binEncBase = 16 is recommended for large numbers + + try: + _plusInf = float('inf') + _minusInf = float('-inf') + _inf = _plusInf, _minusInf + + except ValueError: + # Infinity support is platform and Python dependent + _plusInf = _minusInf = None + _inf = () + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x09) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Optimization for faster codec lookup + typeId = base.SimpleAsn1Type.getTypeId() + + @staticmethod + def __normalizeBase10(value): + m, b, e = value + while m and m % 10 == 0: + m /= 10 + e += 1 + return m, b, e + + def prettyIn(self, value): + if isinstance(value, tuple) and len(value) == 3: + if (not isinstance(value[0], (int, float)) or + not isinstance(value[1], int) or + not isinstance(value[2], int)): + raise error.PyAsn1Error('Lame Real value syntax: %s' % (value,)) + if (isinstance(value[0], float) and + self._inf and value[0] in self._inf): + return value[0] + if value[1] not in (2, 10): + raise error.PyAsn1Error( + 'Prohibited base for Real value: %s' % (value[1],) + ) + if value[1] == 10: + value = self.__normalizeBase10(value) + return value + elif isinstance(value, int): + return self.__normalizeBase10((value, 10, 0)) + elif isinstance(value, float) or isinstance(value, str): + if isinstance(value, str): + try: + value = float(value) + except ValueError: + raise error.PyAsn1Error( + 'Bad real value syntax: %s' % (value,) + ) + if self._inf and value in self._inf: + return value + else: + e = 0 + while int(value) != value: + value *= 10 + e -= 1 + return self.__normalizeBase10((int(value), 10, e)) + elif isinstance(value, Real): + return tuple(value) + raise error.PyAsn1Error( + 'Bad real value syntax: %s' % (value,) + ) + + def prettyPrint(self, scope=0): + try: + return self.prettyOut(float(self)) + + except OverflowError: + return '<overflow>' + + @property + def isPlusInf(self): + """Indicate PLUS-INFINITY object value + + Returns + ------- + : :class:`bool` + :obj:`True` if calling object represents plus infinity + or :obj:`False` otherwise. + + """ + return self._value == self._plusInf + + @property + def isMinusInf(self): + """Indicate MINUS-INFINITY object value + + Returns + ------- + : :class:`bool` + :obj:`True` if calling object represents minus infinity + or :obj:`False` otherwise. + """ + return self._value == self._minusInf + + @property + def isInf(self): + return self._value in self._inf + + def __add__(self, value): + return self.clone(float(self) + value) + + def __radd__(self, value): + return self + value + + def __mul__(self, value): + return self.clone(float(self) * value) + + def __rmul__(self, value): + return self * value + + def __sub__(self, value): + return self.clone(float(self) - value) + + def __rsub__(self, value): + return self.clone(value - float(self)) + + def __mod__(self, value): + return self.clone(float(self) % value) + + def __rmod__(self, value): + return self.clone(value % float(self)) + + def __pow__(self, value, modulo=None): + return self.clone(pow(float(self), value, modulo)) + + def __rpow__(self, value): + return self.clone(pow(value, float(self))) + + def __truediv__(self, value): + return self.clone(float(self) / value) + + def __rtruediv__(self, value): + return self.clone(value / float(self)) + + def __divmod__(self, value): + return self.clone(float(self) // value) + + def __rdivmod__(self, value): + return self.clone(value // float(self)) + + def __int__(self): + return int(float(self)) + + def __float__(self): + if self._value in self._inf: + return self._value + else: + return float( + self._value[0] * pow(self._value[1], self._value[2]) + ) + + def __abs__(self): + return self.clone(abs(float(self))) + + def __pos__(self): + return self.clone(+float(self)) + + def __neg__(self): + return self.clone(-float(self)) + + def __round__(self, n=0): + r = round(float(self), n) + if n: + return self.clone(r) + else: + return r + + def __floor__(self): + return self.clone(math.floor(float(self))) + + def __ceil__(self): + return self.clone(math.ceil(float(self))) + + def __trunc__(self): + return self.clone(math.trunc(float(self))) + + def __lt__(self, value): + return float(self) < value + + def __le__(self, value): + return float(self) <= value + + def __eq__(self, value): + return float(self) == value + + def __ne__(self, value): + return float(self) != value + + def __gt__(self, value): + return float(self) > value + + def __ge__(self, value): + return float(self) >= value + + def __bool__(self): + return bool(float(self)) + + __hash__ = base.SimpleAsn1Type.__hash__ + + def __getitem__(self, idx): + if self._value in self._inf: + raise error.PyAsn1Error('Invalid infinite value operation') + else: + return self._value[idx] + + # compatibility stubs + + def isPlusInfinity(self): + return self.isPlusInf + + def isMinusInfinity(self): + return self.isMinusInf + + def isInfinity(self): + return self.isInf + + +class Enumerated(Integer): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, its + objects are immutable and duck-type Python :class:`int` objects. + + Keyword Args + ------------ + value: :class:`int`, :class:`str` or |ASN.1| object + Python :class:`int` or :class:`str` literal or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + namedValues: :py:class:`~pyasn1.type.namedval.NamedValues` + Object representing non-default symbolic aliases for numbers + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + + .. code-block:: python + + class RadioButton(Enumerated): + ''' + ASN.1 specification: + + RadioButton ::= ENUMERATED { button1(0), button2(1), + button3(2) } + + selected-by-default RadioButton ::= button1 + ''' + namedValues = NamedValues( + ('button1', 0), ('button2', 1), + ('button3', 2) + ) + + selected_by_default = RadioButton('button1') + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 0x0A) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Optimization for faster codec lookup + typeId = Integer.getTypeId() + + #: Default :py:class:`~pyasn1.type.namedval.NamedValues` object + #: representing symbolic aliases for numbers + namedValues = namedval.NamedValues() + + +# "Structured" ASN.1 types + +class SequenceOfAndSetOfBase(base.ConstructedAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.ConstructedAsn1Type`, + its objects are mutable and duck-type Python :class:`list` objects. + + Keyword Args + ------------ + componentType : :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A pyasn1 object representing ASN.1 type allowed within |ASN.1| type + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type can only occur on explicit + `.isInconsistent` call. + + Examples + -------- + + .. code-block:: python + + class LotteryDraw(SequenceOf): # SetOf is similar + ''' + ASN.1 specification: + + LotteryDraw ::= SEQUENCE OF INTEGER + ''' + componentType = Integer() + + lotteryDraw = LotteryDraw() + lotteryDraw.extend([123, 456, 789]) + """ + def __init__(self, *args, **kwargs): + # support positional params for backward compatibility + if args: + for key, value in zip(('componentType', 'tagSet', + 'subtypeSpec'), args): + if key in kwargs: + raise error.PyAsn1Error('Conflicting positional and keyword params!') + kwargs['componentType'] = value + + self._componentValues = noValue + + base.ConstructedAsn1Type.__init__(self, **kwargs) + + # Python list protocol + + def __getitem__(self, idx): + try: + return self.getComponentByPosition(idx) + + except error.PyAsn1Error as exc: + raise IndexError(exc) + + def __setitem__(self, idx, value): + try: + self.setComponentByPosition(idx, value) + + except error.PyAsn1Error as exc: + raise IndexError(exc) + + def append(self, value): + if self._componentValues is noValue: + pos = 0 + + else: + pos = len(self._componentValues) + + self[pos] = value + + def count(self, value): + return list(self._componentValues.values()).count(value) + + def extend(self, values): + for value in values: + self.append(value) + + if self._componentValues is noValue: + self._componentValues = {} + + def index(self, value, start=0, stop=None): + if stop is None: + stop = len(self) + + indices, values = zip(*self._componentValues.items()) + + # TODO: remove when Py2.5 support is gone + values = list(values) + + try: + return indices[values.index(value, start, stop)] + + except error.PyAsn1Error as exc: + raise ValueError(exc) + + def reverse(self): + self._componentValues.reverse() + + def sort(self, key=None, reverse=False): + self._componentValues = dict( + enumerate(sorted(self._componentValues.values(), + key=key, reverse=reverse))) + + def __len__(self): + if self._componentValues is noValue or not self._componentValues: + return 0 + + return max(self._componentValues) + 1 + + def __iter__(self): + for idx in range(0, len(self)): + yield self.getComponentByPosition(idx) + + def _cloneComponentValues(self, myClone, cloneValueFlag): + for idx, componentValue in self._componentValues.items(): + if componentValue is not noValue: + if isinstance(componentValue, base.ConstructedAsn1Type): + myClone.setComponentByPosition( + idx, componentValue.clone(cloneValueFlag=cloneValueFlag) + ) + else: + myClone.setComponentByPosition(idx, componentValue.clone()) + + def getComponentByPosition(self, idx, default=noValue, instantiate=True): + """Return |ASN.1| type component value by position. + + Equivalent to Python sequence subscription operation (e.g. `[]`). + + Parameters + ---------- + idx : :class:`int` + Component index (zero-based). Must either refer to an existing + component or to N+1 component (if *componentType* is set). In the latter + case a new component type gets instantiated and appended to the |ASN.1| + sequence. + + Keyword Args + ------------ + default: :class:`object` + If set and requested component is a schema object, return the `default` + object instead of the requested component. + + instantiate: :class:`bool` + If :obj:`True` (default), inner component will be automatically instantiated. + If :obj:`False` either existing component or the :class:`NoValue` object will be + returned. + + Returns + ------- + : :py:class:`~pyasn1.type.base.PyAsn1Item` + Instantiate |ASN.1| component type or return existing component value + + Examples + -------- + + .. code-block:: python + + # can also be SetOf + class MySequenceOf(SequenceOf): + componentType = OctetString() + + s = MySequenceOf() + + # returns component #0 with `.isValue` property False + s.getComponentByPosition(0) + + # returns None + s.getComponentByPosition(0, default=None) + + s.clear() + + # returns noValue + s.getComponentByPosition(0, instantiate=False) + + # sets component #0 to OctetString() ASN.1 schema + # object and returns it + s.getComponentByPosition(0, instantiate=True) + + # sets component #0 to ASN.1 value object + s.setComponentByPosition(0, 'ABCD') + + # returns OctetString('ABCD') value object + s.getComponentByPosition(0, instantiate=False) + + s.clear() + + # returns noValue + s.getComponentByPosition(0, instantiate=False) + """ + if isinstance(idx, slice): + indices = tuple(range(len(self))) + return [self.getComponentByPosition(subidx, default, instantiate) + for subidx in indices[idx]] + + if idx < 0: + idx = len(self) + idx + if idx < 0: + raise error.PyAsn1Error( + 'SequenceOf/SetOf index is out of range') + + try: + componentValue = self._componentValues[idx] + + except (KeyError, error.PyAsn1Error): + if not instantiate: + return default + + self.setComponentByPosition(idx) + + componentValue = self._componentValues[idx] + + if default is noValue or componentValue.isValue: + return componentValue + else: + return default + + def setComponentByPosition(self, idx, value=noValue, + verifyConstraints=True, + matchTags=True, + matchConstraints=True): + """Assign |ASN.1| type component by position. + + Equivalent to Python sequence item assignment operation (e.g. `[]`) + or list.append() (when idx == len(self)). + + Parameters + ---------- + idx: :class:`int` + Component index (zero-based). Must either refer to existing + component or to N+1 component. In the latter case a new component + type gets instantiated (if *componentType* is set, or given ASN.1 + object is taken otherwise) and appended to the |ASN.1| sequence. + + Keyword Args + ------------ + value: :class:`object` or :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A Python value to initialize |ASN.1| component with (if *componentType* is set) + or ASN.1 value object to assign to |ASN.1| component. + If `value` is not given, schema object will be set as a component. + + verifyConstraints: :class:`bool` + If :obj:`False`, skip constraints validation + + matchTags: :class:`bool` + If :obj:`False`, skip component tags matching + + matchConstraints: :class:`bool` + If :obj:`False`, skip component constraints matching + + Returns + ------- + self + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer + IndexError + When idx > len(self) + """ + if isinstance(idx, slice): + indices = tuple(range(len(self))) + startIdx = indices and indices[idx][0] or 0 + for subIdx, subValue in enumerate(value): + self.setComponentByPosition( + startIdx + subIdx, subValue, verifyConstraints, + matchTags, matchConstraints) + return self + + if idx < 0: + idx = len(self) + idx + if idx < 0: + raise error.PyAsn1Error( + 'SequenceOf/SetOf index is out of range') + + componentType = self.componentType + + if self._componentValues is noValue: + componentValues = {} + + else: + componentValues = self._componentValues + + currentValue = componentValues.get(idx, noValue) + + if value is noValue: + if componentType is not None: + value = componentType.clone() + + elif currentValue is noValue: + raise error.PyAsn1Error('Component type not defined') + + elif not isinstance(value, base.Asn1Item): + if (componentType is not None and + isinstance(componentType, base.SimpleAsn1Type)): + value = componentType.clone(value=value) + + elif (currentValue is not noValue and + isinstance(currentValue, base.SimpleAsn1Type)): + value = currentValue.clone(value=value) + + else: + raise error.PyAsn1Error( + 'Non-ASN.1 value %r and undefined component' + ' type at %r' % (value, self)) + + elif componentType is not None and (matchTags or matchConstraints): + subtypeChecker = ( + self.strictConstraints and + componentType.isSameTypeWith or + componentType.isSuperTypeOf) + + if not subtypeChecker(value, verifyConstraints and matchTags, + verifyConstraints and matchConstraints): + # TODO: we should wrap componentType with UnnamedType to carry + # additional properties associated with componentType + if componentType.typeId != Any.typeId: + raise error.PyAsn1Error( + 'Component value is tag-incompatible: %r vs ' + '%r' % (value, componentType)) + + componentValues[idx] = value + + self._componentValues = componentValues + + return self + + @property + def componentTagMap(self): + if self.componentType is not None: + return self.componentType.tagMap + + @property + def components(self): + return [self._componentValues[idx] + for idx in sorted(self._componentValues)] + + def clear(self): + """Remove all components and become an empty |ASN.1| value object. + + Has the same effect on |ASN.1| object as it does on :class:`list` + built-in. + """ + self._componentValues = {} + return self + + def reset(self): + """Remove all components and become a |ASN.1| schema object. + + See :meth:`isValue` property for more information on the + distinction between value and schema objects. + """ + self._componentValues = noValue + return self + + def prettyPrint(self, scope=0): + scope += 1 + representation = self.__class__.__name__ + ':\n' + + if not self.isValue: + return representation + + for idx, componentValue in enumerate(self): + representation += ' ' * scope + if (componentValue is noValue and + self.componentType is not None): + representation += '<empty>' + else: + representation += componentValue.prettyPrint(scope) + + return representation + + def prettyPrintType(self, scope=0): + scope += 1 + representation = '%s -> %s {\n' % (self.tagSet, self.__class__.__name__) + if self.componentType is not None: + representation += ' ' * scope + representation += self.componentType.prettyPrintType(scope) + return representation + '\n' + ' ' * (scope - 1) + '}' + + + @property + def isValue(self): + """Indicate that |ASN.1| object represents ASN.1 value. + + If *isValue* is :obj:`False` then this object represents just ASN.1 schema. + + If *isValue* is :obj:`True` then, in addition to its ASN.1 schema features, + this object can also be used like a Python built-in object + (e.g. :class:`int`, :class:`str`, :class:`dict` etc.). + + Returns + ------- + : :class:`bool` + :obj:`False` if object represents just ASN.1 schema. + :obj:`True` if object represents ASN.1 schema and can be used as a normal value. + + Note + ---- + There is an important distinction between PyASN1 schema and value objects. + The PyASN1 schema objects can only participate in ASN.1 schema-related + operations (e.g. defining or testing the structure of the data). Most + obvious uses of ASN.1 schema is to guide serialisation codecs whilst + encoding/decoding serialised ASN.1 contents. + + The PyASN1 value objects can **additionally** participate in many operations + involving regular Python objects (e.g. arithmetic, comprehension etc). + """ + if self._componentValues is noValue: + return False + + if len(self._componentValues) != len(self): + return False + + for componentValue in self._componentValues.values(): + if componentValue is noValue or not componentValue.isValue: + return False + + return True + + @property + def isInconsistent(self): + """Run necessary checks to ensure |ASN.1| object consistency. + + Default action is to verify |ASN.1| object against constraints imposed + by `subtypeSpec`. + + Raises + ------ + :py:class:`~pyasn1.error.PyAsn1tError` on any inconsistencies found + """ + if self.componentType is noValue or not self.subtypeSpec: + return False + + if self._componentValues is noValue: + return True + + mapping = {} + + for idx, value in self._componentValues.items(): + # Absent fields are not in the mapping + if value is noValue: + continue + + mapping[idx] = value + + try: + # Represent SequenceOf/SetOf as a bare dict to constraints chain + self.subtypeSpec(mapping) + + except error.PyAsn1Error as exc: + return exc + + return False + +class SequenceOf(SequenceOfAndSetOfBase): + __doc__ = SequenceOfAndSetOfBase.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatConstructed, 0x10) + ) + + #: Default :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + #: object representing ASN.1 type allowed within |ASN.1| type + componentType = None + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Disambiguation ASN.1 types identification + typeId = SequenceOfAndSetOfBase.getTypeId() + + +class SetOf(SequenceOfAndSetOfBase): + __doc__ = SequenceOfAndSetOfBase.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatConstructed, 0x11) + ) + + #: Default :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + #: object representing ASN.1 type allowed within |ASN.1| type + componentType = None + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Disambiguation ASN.1 types identification + typeId = SequenceOfAndSetOfBase.getTypeId() + + +class SequenceAndSetBase(base.ConstructedAsn1Type): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.ConstructedAsn1Type`, + its objects are mutable and duck-type Python :class:`dict` objects. + + Keyword Args + ------------ + componentType: :py:class:`~pyasn1.type.namedtype.NamedType` + Object holding named ASN.1 types allowed within this collection + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type can only occur on explicit + `.isInconsistent` call. + + Examples + -------- + + .. code-block:: python + + class Description(Sequence): # Set is similar + ''' + ASN.1 specification: + + Description ::= SEQUENCE { + surname IA5String, + first-name IA5String OPTIONAL, + age INTEGER DEFAULT 40 + } + ''' + componentType = NamedTypes( + NamedType('surname', IA5String()), + OptionalNamedType('first-name', IA5String()), + DefaultedNamedType('age', Integer(40)) + ) + + descr = Description() + descr['surname'] = 'Smith' + descr['first-name'] = 'John' + """ + #: Default :py:class:`~pyasn1.type.namedtype.NamedTypes` + #: object representing named ASN.1 types allowed within |ASN.1| type + componentType = namedtype.NamedTypes() + + + class DynamicNames(object): + """Fields names/positions mapping for component-less objects""" + def __init__(self): + self._keyToIdxMap = {} + self._idxToKeyMap = {} + + def __len__(self): + return len(self._keyToIdxMap) + + def __contains__(self, item): + return item in self._keyToIdxMap or item in self._idxToKeyMap + + def __iter__(self): + return (self._idxToKeyMap[idx] for idx in range(len(self._idxToKeyMap))) + + def __getitem__(self, item): + try: + return self._keyToIdxMap[item] + + except KeyError: + return self._idxToKeyMap[item] + + def getNameByPosition(self, idx): + try: + return self._idxToKeyMap[idx] + + except KeyError: + raise error.PyAsn1Error('Type position out of range') + + def getPositionByName(self, name): + try: + return self._keyToIdxMap[name] + + except KeyError: + raise error.PyAsn1Error('Name %s not found' % (name,)) + + def addField(self, idx): + self._keyToIdxMap['field-%d' % idx] = idx + self._idxToKeyMap[idx] = 'field-%d' % idx + + + def __init__(self, **kwargs): + base.ConstructedAsn1Type.__init__(self, **kwargs) + self._componentTypeLen = len(self.componentType) + if self._componentTypeLen: + self._componentValues = [] + else: + self._componentValues = noValue + self._dynamicNames = self._componentTypeLen or self.DynamicNames() + + def __getitem__(self, idx): + if isinstance(idx, str): + try: + return self.getComponentByName(idx) + + except error.PyAsn1Error as exc: + # duck-typing dict + raise KeyError(exc) + + else: + try: + return self.getComponentByPosition(idx) + + except error.PyAsn1Error as exc: + # duck-typing list + raise IndexError(exc) + + def __setitem__(self, idx, value): + if isinstance(idx, str): + try: + self.setComponentByName(idx, value) + + except error.PyAsn1Error as exc: + # duck-typing dict + raise KeyError(exc) + + else: + try: + self.setComponentByPosition(idx, value) + + except error.PyAsn1Error as exc: + # duck-typing list + raise IndexError(exc) + + def __contains__(self, key): + if self._componentTypeLen: + return key in self.componentType + else: + return key in self._dynamicNames + + def __len__(self): + return len(self._componentValues) + + def __iter__(self): + return iter(self.componentType or self._dynamicNames) + + # Python dict protocol + + def values(self): + for idx in range(self._componentTypeLen or len(self._dynamicNames)): + yield self[idx] + + def keys(self): + return iter(self) + + def items(self): + for idx in range(self._componentTypeLen or len(self._dynamicNames)): + if self._componentTypeLen: + yield self.componentType[idx].name, self[idx] + else: + yield self._dynamicNames[idx], self[idx] + + def update(self, *iterValue, **mappingValue): + for k, v in iterValue: + self[k] = v + for k in mappingValue: + self[k] = mappingValue[k] + + def clear(self): + """Remove all components and become an empty |ASN.1| value object. + + Has the same effect on |ASN.1| object as it does on :class:`dict` + built-in. + """ + self._componentValues = [] + self._dynamicNames = self.DynamicNames() + return self + + def reset(self): + """Remove all components and become a |ASN.1| schema object. + + See :meth:`isValue` property for more information on the + distinction between value and schema objects. + """ + self._componentValues = noValue + self._dynamicNames = self.DynamicNames() + return self + + @property + def components(self): + return self._componentValues + + def _cloneComponentValues(self, myClone, cloneValueFlag): + if self._componentValues is noValue: + return + + for idx, componentValue in enumerate(self._componentValues): + if componentValue is not noValue: + if isinstance(componentValue, base.ConstructedAsn1Type): + myClone.setComponentByPosition( + idx, componentValue.clone(cloneValueFlag=cloneValueFlag) + ) + else: + myClone.setComponentByPosition(idx, componentValue.clone()) + + def getComponentByName(self, name, default=noValue, instantiate=True): + """Returns |ASN.1| type component by name. + + Equivalent to Python :class:`dict` subscription operation (e.g. `[]`). + + Parameters + ---------- + name: :class:`str` + |ASN.1| type component name + + Keyword Args + ------------ + default: :class:`object` + If set and requested component is a schema object, return the `default` + object instead of the requested component. + + instantiate: :class:`bool` + If :obj:`True` (default), inner component will be automatically + instantiated. + If :obj:`False` either existing component or the :class:`NoValue` + object will be returned. + + Returns + ------- + : :py:class:`~pyasn1.type.base.PyAsn1Item` + Instantiate |ASN.1| component type or return existing + component value + """ + if self._componentTypeLen: + idx = self.componentType.getPositionByName(name) + else: + try: + idx = self._dynamicNames.getPositionByName(name) + + except KeyError: + raise error.PyAsn1Error('Name %s not found' % (name,)) + + return self.getComponentByPosition(idx, default=default, instantiate=instantiate) + + def setComponentByName(self, name, value=noValue, + verifyConstraints=True, + matchTags=True, + matchConstraints=True): + """Assign |ASN.1| type component by name. + + Equivalent to Python :class:`dict` item assignment operation (e.g. `[]`). + + Parameters + ---------- + name: :class:`str` + |ASN.1| type component name + + Keyword Args + ------------ + value: :class:`object` or :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A Python value to initialize |ASN.1| component with (if *componentType* is set) + or ASN.1 value object to assign to |ASN.1| component. + If `value` is not given, schema object will be set as a component. + + verifyConstraints: :class:`bool` + If :obj:`False`, skip constraints validation + + matchTags: :class:`bool` + If :obj:`False`, skip component tags matching + + matchConstraints: :class:`bool` + If :obj:`False`, skip component constraints matching + + Returns + ------- + self + """ + if self._componentTypeLen: + idx = self.componentType.getPositionByName(name) + else: + try: + idx = self._dynamicNames.getPositionByName(name) + + except KeyError: + raise error.PyAsn1Error('Name %s not found' % (name,)) + + return self.setComponentByPosition( + idx, value, verifyConstraints, matchTags, matchConstraints + ) + + def getComponentByPosition(self, idx, default=noValue, instantiate=True): + """Returns |ASN.1| type component by index. + + Equivalent to Python sequence subscription operation (e.g. `[]`). + + Parameters + ---------- + idx: :class:`int` + Component index (zero-based). Must either refer to an existing + component or (if *componentType* is set) new ASN.1 schema object gets + instantiated. + + Keyword Args + ------------ + default: :class:`object` + If set and requested component is a schema object, return the `default` + object instead of the requested component. + + instantiate: :class:`bool` + If :obj:`True` (default), inner component will be automatically + instantiated. + If :obj:`False` either existing component or the :class:`NoValue` + object will be returned. + + Returns + ------- + : :py:class:`~pyasn1.type.base.PyAsn1Item` + a PyASN1 object + + Examples + -------- + + .. code-block:: python + + # can also be Set + class MySequence(Sequence): + componentType = NamedTypes( + NamedType('id', OctetString()) + ) + + s = MySequence() + + # returns component #0 with `.isValue` property False + s.getComponentByPosition(0) + + # returns None + s.getComponentByPosition(0, default=None) + + s.clear() + + # returns noValue + s.getComponentByPosition(0, instantiate=False) + + # sets component #0 to OctetString() ASN.1 schema + # object and returns it + s.getComponentByPosition(0, instantiate=True) + + # sets component #0 to ASN.1 value object + s.setComponentByPosition(0, 'ABCD') + + # returns OctetString('ABCD') value object + s.getComponentByPosition(0, instantiate=False) + + s.clear() + + # returns noValue + s.getComponentByPosition(0, instantiate=False) + """ + try: + if self._componentValues is noValue: + componentValue = noValue + + else: + componentValue = self._componentValues[idx] + + except IndexError: + componentValue = noValue + + if not instantiate: + if componentValue is noValue or not componentValue.isValue: + return default + else: + return componentValue + + if componentValue is noValue: + self.setComponentByPosition(idx) + + componentValue = self._componentValues[idx] + + if default is noValue or componentValue.isValue: + return componentValue + else: + return default + + def setComponentByPosition(self, idx, value=noValue, + verifyConstraints=True, + matchTags=True, + matchConstraints=True): + """Assign |ASN.1| type component by position. + + Equivalent to Python sequence item assignment operation (e.g. `[]`). + + Parameters + ---------- + idx : :class:`int` + Component index (zero-based). Must either refer to existing + component (if *componentType* is set) or to N+1 component + otherwise. In the latter case a new component of given ASN.1 + type gets instantiated and appended to |ASN.1| sequence. + + Keyword Args + ------------ + value: :class:`object` or :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A Python value to initialize |ASN.1| component with (if *componentType* is set) + or ASN.1 value object to assign to |ASN.1| component. + If `value` is not given, schema object will be set as a component. + + verifyConstraints : :class:`bool` + If :obj:`False`, skip constraints validation + + matchTags: :class:`bool` + If :obj:`False`, skip component tags matching + + matchConstraints: :class:`bool` + If :obj:`False`, skip component constraints matching + + Returns + ------- + self + """ + componentType = self.componentType + componentTypeLen = self._componentTypeLen + + if self._componentValues is noValue: + componentValues = [] + + else: + componentValues = self._componentValues + + try: + currentValue = componentValues[idx] + + except IndexError: + currentValue = noValue + if componentTypeLen: + if componentTypeLen < idx: + raise error.PyAsn1Error('component index out of range') + + componentValues = [noValue] * componentTypeLen + + if value is noValue: + if componentTypeLen: + value = componentType.getTypeByPosition(idx) + if isinstance(value, base.ConstructedAsn1Type): + value = value.clone(cloneValueFlag=componentType[idx].isDefaulted) + + elif currentValue is noValue: + raise error.PyAsn1Error('Component type not defined') + + elif not isinstance(value, base.Asn1Item): + if componentTypeLen: + subComponentType = componentType.getTypeByPosition(idx) + if isinstance(subComponentType, base.SimpleAsn1Type): + value = subComponentType.clone(value=value) + + else: + raise error.PyAsn1Error('%s can cast only scalar values' % componentType.__class__.__name__) + + elif currentValue is not noValue and isinstance(currentValue, base.SimpleAsn1Type): + value = currentValue.clone(value=value) + + else: + raise error.PyAsn1Error('%s undefined component type' % componentType.__class__.__name__) + + elif ((verifyConstraints or matchTags or matchConstraints) and + componentTypeLen): + subComponentType = componentType.getTypeByPosition(idx) + if subComponentType is not noValue: + subtypeChecker = (self.strictConstraints and + subComponentType.isSameTypeWith or + subComponentType.isSuperTypeOf) + + if not subtypeChecker(value, verifyConstraints and matchTags, + verifyConstraints and matchConstraints): + if not componentType[idx].openType: + raise error.PyAsn1Error('Component value is tag-incompatible: %r vs %r' % (value, componentType)) + + if componentTypeLen or idx in self._dynamicNames: + componentValues[idx] = value + + elif len(componentValues) == idx: + componentValues.append(value) + self._dynamicNames.addField(idx) + + else: + raise error.PyAsn1Error('Component index out of range') + + self._componentValues = componentValues + + return self + + @property + def isValue(self): + """Indicate that |ASN.1| object represents ASN.1 value. + + If *isValue* is :obj:`False` then this object represents just ASN.1 schema. + + If *isValue* is :obj:`True` then, in addition to its ASN.1 schema features, + this object can also be used like a Python built-in object (e.g. + :class:`int`, :class:`str`, :class:`dict` etc.). + + Returns + ------- + : :class:`bool` + :obj:`False` if object represents just ASN.1 schema. + :obj:`True` if object represents ASN.1 schema and can be used as a + normal value. + + Note + ---- + There is an important distinction between PyASN1 schema and value objects. + The PyASN1 schema objects can only participate in ASN.1 schema-related + operations (e.g. defining or testing the structure of the data). Most + obvious uses of ASN.1 schema is to guide serialisation codecs whilst + encoding/decoding serialised ASN.1 contents. + + The PyASN1 value objects can **additionally** participate in many operations + involving regular Python objects (e.g. arithmetic, comprehension etc). + + It is sufficient for |ASN.1| objects to have all non-optional and non-defaulted + components being value objects to be considered as a value objects as a whole. + In other words, even having one or more optional components not turned into + value objects, |ASN.1| object is still considered as a value object. Defaulted + components are normally value objects by default. + """ + if self._componentValues is noValue: + return False + + componentType = self.componentType + + if componentType: + for idx, subComponentType in enumerate(componentType.namedTypes): + if subComponentType.isDefaulted or subComponentType.isOptional: + continue + + if not self._componentValues: + return False + + componentValue = self._componentValues[idx] + if componentValue is noValue or not componentValue.isValue: + return False + + else: + for componentValue in self._componentValues: + if componentValue is noValue or not componentValue.isValue: + return False + + return True + + @property + def isInconsistent(self): + """Run necessary checks to ensure |ASN.1| object consistency. + + Default action is to verify |ASN.1| object against constraints imposed + by `subtypeSpec`. + + Raises + ------ + :py:class:`~pyasn1.error.PyAsn1tError` on any inconsistencies found + """ + if self.componentType is noValue or not self.subtypeSpec: + return False + + if self._componentValues is noValue: + return True + + mapping = {} + + for idx, value in enumerate(self._componentValues): + # Absent fields are not in the mapping + if value is noValue: + continue + + name = self.componentType.getNameByPosition(idx) + + mapping[name] = value + + try: + # Represent Sequence/Set as a bare dict to constraints chain + self.subtypeSpec(mapping) + + except error.PyAsn1Error as exc: + return exc + + return False + + def prettyPrint(self, scope=0): + """Return an object representation string. + + Returns + ------- + : :class:`str` + Human-friendly object representation. + """ + scope += 1 + representation = self.__class__.__name__ + ':\n' + for idx, componentValue in enumerate(self._componentValues): + if componentValue is not noValue and componentValue.isValue: + representation += ' ' * scope + if self.componentType: + representation += self.componentType.getNameByPosition(idx) + else: + representation += self._dynamicNames.getNameByPosition(idx) + representation = '%s=%s\n' % ( + representation, componentValue.prettyPrint(scope) + ) + return representation + + def prettyPrintType(self, scope=0): + scope += 1 + representation = '%s -> %s {\n' % (self.tagSet, self.__class__.__name__) + for idx, componentType in enumerate(self.componentType.values() or self._componentValues): + representation += ' ' * scope + if self.componentType: + representation += '"%s"' % self.componentType.getNameByPosition(idx) + else: + representation += '"%s"' % self._dynamicNames.getNameByPosition(idx) + representation = '%s = %s\n' % ( + representation, componentType.prettyPrintType(scope) + ) + return representation + '\n' + ' ' * (scope - 1) + '}' + + # backward compatibility + + def setDefaultComponents(self): + return self + + def getComponentType(self): + if self._componentTypeLen: + return self.componentType + + def getNameByPosition(self, idx): + if self._componentTypeLen: + return self.componentType[idx].name + +class Sequence(SequenceAndSetBase): + __doc__ = SequenceAndSetBase.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatConstructed, 0x10) + ) + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + #: Default collection of ASN.1 types of component (e.g. :py:class:`~pyasn1.type.namedtype.NamedType`) + #: object imposing size constraint on |ASN.1| objects + componentType = namedtype.NamedTypes() + + # Disambiguation ASN.1 types identification + typeId = SequenceAndSetBase.getTypeId() + + # backward compatibility + + def getComponentTagMapNearPosition(self, idx): + if self.componentType: + return self.componentType.getTagMapNearPosition(idx) + + def getComponentPositionNearType(self, tagSet, idx): + if self.componentType: + return self.componentType.getPositionNearType(tagSet, idx) + else: + return idx + + +class Set(SequenceAndSetBase): + __doc__ = SequenceAndSetBase.__doc__ + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.initTagSet( + tag.Tag(tag.tagClassUniversal, tag.tagFormatConstructed, 0x11) + ) + + #: Default collection of ASN.1 types of component (e.g. :py:class:`~pyasn1.type.namedtype.NamedType`) + #: object representing ASN.1 type allowed within |ASN.1| type + componentType = namedtype.NamedTypes() + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Disambiguation ASN.1 types identification + typeId = SequenceAndSetBase.getTypeId() + + def getComponent(self, innerFlag=False): + return self + + def getComponentByType(self, tagSet, default=noValue, + instantiate=True, innerFlag=False): + """Returns |ASN.1| type component by ASN.1 tag. + + Parameters + ---------- + tagSet : :py:class:`~pyasn1.type.tag.TagSet` + Object representing ASN.1 tags to identify one of + |ASN.1| object component + + Keyword Args + ------------ + default: :class:`object` + If set and requested component is a schema object, return the `default` + object instead of the requested component. + + instantiate: :class:`bool` + If :obj:`True` (default), inner component will be automatically + instantiated. + If :obj:`False` either existing component or the :class:`noValue` + object will be returned. + + Returns + ------- + : :py:class:`~pyasn1.type.base.PyAsn1Item` + a pyasn1 object + """ + componentValue = self.getComponentByPosition( + self.componentType.getPositionByType(tagSet), + default=default, instantiate=instantiate + ) + if innerFlag and isinstance(componentValue, Set): + # get inner component by inner tagSet + return componentValue.getComponent(innerFlag=True) + else: + # get outer component by inner tagSet + return componentValue + + def setComponentByType(self, tagSet, value=noValue, + verifyConstraints=True, + matchTags=True, + matchConstraints=True, + innerFlag=False): + """Assign |ASN.1| type component by ASN.1 tag. + + Parameters + ---------- + tagSet : :py:class:`~pyasn1.type.tag.TagSet` + Object representing ASN.1 tags to identify one of + |ASN.1| object component + + Keyword Args + ------------ + value: :class:`object` or :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A Python value to initialize |ASN.1| component with (if *componentType* is set) + or ASN.1 value object to assign to |ASN.1| component. + If `value` is not given, schema object will be set as a component. + + verifyConstraints : :class:`bool` + If :obj:`False`, skip constraints validation + + matchTags: :class:`bool` + If :obj:`False`, skip component tags matching + + matchConstraints: :class:`bool` + If :obj:`False`, skip component constraints matching + + innerFlag: :class:`bool` + If :obj:`True`, search for matching *tagSet* recursively. + + Returns + ------- + self + """ + idx = self.componentType.getPositionByType(tagSet) + + if innerFlag: # set inner component by inner tagSet + componentType = self.componentType.getTypeByPosition(idx) + + if componentType.tagSet: + return self.setComponentByPosition( + idx, value, verifyConstraints, matchTags, matchConstraints + ) + else: + componentType = self.getComponentByPosition(idx) + return componentType.setComponentByType( + tagSet, value, verifyConstraints, matchTags, matchConstraints, innerFlag=innerFlag + ) + else: # set outer component by inner tagSet + return self.setComponentByPosition( + idx, value, verifyConstraints, matchTags, matchConstraints + ) + + @property + def componentTagMap(self): + if self.componentType: + return self.componentType.tagMapUnique + + +class Choice(Set): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.ConstructedAsn1Type`, + its objects are mutable and duck-type Python :class:`list` objects. + + Keyword Args + ------------ + componentType: :py:class:`~pyasn1.type.namedtype.NamedType` + Object holding named ASN.1 types allowed within this collection + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type can only occur on explicit + `.isInconsistent` call. + + Examples + -------- + + .. code-block:: python + + class Afters(Choice): + ''' + ASN.1 specification: + + Afters ::= CHOICE { + cheese [0] IA5String, + dessert [1] IA5String + } + ''' + componentType = NamedTypes( + NamedType('cheese', IA5String().subtype( + implicitTag=Tag(tagClassContext, tagFormatSimple, 0) + ), + NamedType('dessert', IA5String().subtype( + implicitTag=Tag(tagClassContext, tagFormatSimple, 1) + ) + ) + + afters = Afters() + afters['cheese'] = 'Mascarpone' + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.TagSet() # untagged + + #: Default collection of ASN.1 types of component (e.g. :py:class:`~pyasn1.type.namedtype.NamedType`) + #: object representing ASN.1 type allowed within |ASN.1| type + componentType = namedtype.NamedTypes() + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection( + constraint.ValueSizeConstraint(1, 1) + ) + + # Disambiguation ASN.1 types identification + typeId = Set.getTypeId() + + _currentIdx = None + + def __eq__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] == other + return NotImplemented + + def __ne__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] != other + return NotImplemented + + def __lt__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] < other + return NotImplemented + + def __le__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] <= other + return NotImplemented + + def __gt__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] > other + return NotImplemented + + def __ge__(self, other): + if self._componentValues: + return self._componentValues[self._currentIdx] >= other + return NotImplemented + + def __bool__(self): + return bool(self._componentValues) + + def __len__(self): + return self._currentIdx is not None and 1 or 0 + + def __contains__(self, key): + if self._currentIdx is None: + return False + return key == self.componentType[self._currentIdx].getName() + + def __iter__(self): + if self._currentIdx is None: + raise StopIteration + yield self.componentType[self._currentIdx].getName() + + # Python dict protocol + + def values(self): + if self._currentIdx is not None: + yield self._componentValues[self._currentIdx] + + def keys(self): + if self._currentIdx is not None: + yield self.componentType[self._currentIdx].getName() + + def items(self): + if self._currentIdx is not None: + yield self.componentType[self._currentIdx].getName(), self[self._currentIdx] + + def checkConsistency(self): + if self._currentIdx is None: + raise error.PyAsn1Error('Component not chosen') + + def _cloneComponentValues(self, myClone, cloneValueFlag): + try: + component = self.getComponent() + except error.PyAsn1Error: + pass + else: + if isinstance(component, Choice): + tagSet = component.effectiveTagSet + else: + tagSet = component.tagSet + if isinstance(component, base.ConstructedAsn1Type): + myClone.setComponentByType( + tagSet, component.clone(cloneValueFlag=cloneValueFlag) + ) + else: + myClone.setComponentByType(tagSet, component.clone()) + + def getComponentByPosition(self, idx, default=noValue, instantiate=True): + __doc__ = Set.__doc__ + + if self._currentIdx is None or self._currentIdx != idx: + return Set.getComponentByPosition(self, idx, default=default, + instantiate=instantiate) + + return self._componentValues[idx] + + def setComponentByPosition(self, idx, value=noValue, + verifyConstraints=True, + matchTags=True, + matchConstraints=True): + """Assign |ASN.1| type component by position. + + Equivalent to Python sequence item assignment operation (e.g. `[]`). + + Parameters + ---------- + idx: :class:`int` + Component index (zero-based). Must either refer to existing + component or to N+1 component. In the latter case a new component + type gets instantiated (if *componentType* is set, or given ASN.1 + object is taken otherwise) and appended to the |ASN.1| sequence. + + Keyword Args + ------------ + value: :class:`object` or :py:class:`~pyasn1.type.base.PyAsn1Item` derivative + A Python value to initialize |ASN.1| component with (if *componentType* is set) + or ASN.1 value object to assign to |ASN.1| component. Once a new value is + set to *idx* component, previous value is dropped. + If `value` is not given, schema object will be set as a component. + + verifyConstraints : :class:`bool` + If :obj:`False`, skip constraints validation + + matchTags: :class:`bool` + If :obj:`False`, skip component tags matching + + matchConstraints: :class:`bool` + If :obj:`False`, skip component constraints matching + + Returns + ------- + self + """ + oldIdx = self._currentIdx + Set.setComponentByPosition(self, idx, value, verifyConstraints, matchTags, matchConstraints) + self._currentIdx = idx + if oldIdx is not None and oldIdx != idx: + self._componentValues[oldIdx] = noValue + return self + + @property + def effectiveTagSet(self): + """Return a :class:`~pyasn1.type.tag.TagSet` object of the currently initialized component or self (if |ASN.1| is tagged).""" + if self.tagSet: + return self.tagSet + else: + component = self.getComponent() + return component.effectiveTagSet + + @property + def tagMap(self): + """"Return a :class:`~pyasn1.type.tagmap.TagMap` object mapping + ASN.1 tags to ASN.1 objects contained within callee. + """ + if self.tagSet: + return Set.tagMap.fget(self) + else: + return self.componentType.tagMapUnique + + def getComponent(self, innerFlag=False): + """Return currently assigned component of the |ASN.1| object. + + Returns + ------- + : :py:class:`~pyasn1.type.base.PyAsn1Item` + a PyASN1 object + """ + if self._currentIdx is None: + raise error.PyAsn1Error('Component not chosen') + else: + c = self._componentValues[self._currentIdx] + if innerFlag and isinstance(c, Choice): + return c.getComponent(innerFlag) + else: + return c + + def getName(self, innerFlag=False): + """Return the name of currently assigned component of the |ASN.1| object. + + Returns + ------- + : :py:class:`str` + |ASN.1| component name + """ + if self._currentIdx is None: + raise error.PyAsn1Error('Component not chosen') + else: + if innerFlag: + c = self._componentValues[self._currentIdx] + if isinstance(c, Choice): + return c.getName(innerFlag) + return self.componentType.getNameByPosition(self._currentIdx) + + @property + def isValue(self): + """Indicate that |ASN.1| object represents ASN.1 value. + + If *isValue* is :obj:`False` then this object represents just ASN.1 schema. + + If *isValue* is :obj:`True` then, in addition to its ASN.1 schema features, + this object can also be used like a Python built-in object (e.g. + :class:`int`, :class:`str`, :class:`dict` etc.). + + Returns + ------- + : :class:`bool` + :obj:`False` if object represents just ASN.1 schema. + :obj:`True` if object represents ASN.1 schema and can be used as a normal + value. + + Note + ---- + There is an important distinction between PyASN1 schema and value objects. + The PyASN1 schema objects can only participate in ASN.1 schema-related + operations (e.g. defining or testing the structure of the data). Most + obvious uses of ASN.1 schema is to guide serialisation codecs whilst + encoding/decoding serialised ASN.1 contents. + + The PyASN1 value objects can **additionally** participate in many operations + involving regular Python objects (e.g. arithmetic, comprehension etc). + """ + if self._currentIdx is None: + return False + + componentValue = self._componentValues[self._currentIdx] + + return componentValue is not noValue and componentValue.isValue + + def clear(self): + self._currentIdx = None + return Set.clear(self) + + # compatibility stubs + + def getMinTagSet(self): + return self.minTagSet + + +class Any(OctetString): + """Create |ASN.1| schema or value object. + + |ASN.1| class is based on :class:`~pyasn1.type.base.SimpleAsn1Type`, + its objects are immutable and duck-type :class:`bytes`. + When used in Unicode context, |ASN.1| type assumes + "|encoding|" serialisation. + + Keyword Args + ------------ + value: :class:`unicode`, :class:`str`, :class:`bytes` or |ASN.1| object + :class:`bytes`, alternatively :class:`str` + representing character string to be serialised into octets (note + `encoding` parameter) or |ASN.1| object. + If `value` is not given, schema object will be created. + + tagSet: :py:class:`~pyasn1.type.tag.TagSet` + Object representing non-default ASN.1 tag(s) + + subtypeSpec: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` + Object representing non-default ASN.1 subtype constraint(s). Constraints + verification for |ASN.1| type occurs automatically on object + instantiation. + + encoding: :py:class:`str` + Unicode codec ID to encode/decode + :class:`str` the payload when |ASN.1| object is used + in text string context. + + binValue: :py:class:`str` + Binary string initializer to use instead of the *value*. + Example: '10110011'. + + hexValue: :py:class:`str` + Hexadecimal string initializer to use instead of the *value*. + Example: 'DEADBEEF'. + + Raises + ------ + ~pyasn1.error.ValueConstraintError, ~pyasn1.error.PyAsn1Error + On constraint violation or bad initializer. + + Examples + -------- + .. code-block:: python + + class Error(Sequence): + ''' + ASN.1 specification: + + Error ::= SEQUENCE { + code INTEGER, + parameter ANY DEFINED BY code -- Either INTEGER or REAL + } + ''' + componentType=NamedTypes( + NamedType('code', Integer()), + NamedType('parameter', Any(), + openType=OpenType('code', {1: Integer(), + 2: Real()})) + ) + + error = Error() + error['code'] = 1 + error['parameter'] = Integer(1234) + """ + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.tag.TagSet` object representing ASN.1 tag(s) + #: associated with |ASN.1| type. + tagSet = tag.TagSet() # untagged + + #: Set (on class, not on instance) or return a + #: :py:class:`~pyasn1.type.constraint.ConstraintsIntersection` object + #: imposing constraints on |ASN.1| type initialization values. + subtypeSpec = constraint.ConstraintsIntersection() + + # Disambiguation ASN.1 types identification + typeId = OctetString.getTypeId() + + @property + def tagMap(self): + """"Return a :class:`~pyasn1.type.tagmap.TagMap` object mapping + ASN.1 tags to ASN.1 objects contained within callee. + """ + try: + return self._tagMap + + except AttributeError: + self._tagMap = tagmap.TagMap( + {self.tagSet: self}, + {eoo.endOfOctets.tagSet: eoo.endOfOctets}, + self + ) + + return self._tagMap + +# XXX +# coercion rules? diff --git a/.venv/lib/python3.12/site-packages/pyasn1/type/useful.py b/.venv/lib/python3.12/site-packages/pyasn1/type/useful.py new file mode 100644 index 00000000..a8ae8740 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/pyasn1/type/useful.py @@ -0,0 +1,189 @@ +# +# This file is part of pyasn1 software. +# +# Copyright (c) 2005-2020, Ilya Etingof <etingof@gmail.com> +# License: https://pyasn1.readthedocs.io/en/latest/license.html +# +import datetime + +from pyasn1 import error +from pyasn1.type import char +from pyasn1.type import tag +from pyasn1.type import univ + +__all__ = ['ObjectDescriptor', 'GeneralizedTime', 'UTCTime'] + +NoValue = univ.NoValue +noValue = univ.noValue + + +class ObjectDescriptor(char.GraphicString): + __doc__ = char.GraphicString.__doc__ + + #: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects + tagSet = char.GraphicString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 7) + ) + + # Optimization for faster codec lookup + typeId = char.GraphicString.getTypeId() + + +class TimeMixIn(object): + + _yearsDigits = 4 + _hasSubsecond = False + _optionalMinutes = False + _shortTZ = False + + class FixedOffset(datetime.tzinfo): + """Fixed offset in minutes east from UTC.""" + + # defaulted arguments required + # https: // docs.python.org / 2.3 / lib / datetime - tzinfo.html + def __init__(self, offset=0, name='UTC'): + self.__offset = datetime.timedelta(minutes=offset) + self.__name = name + + def utcoffset(self, dt): + return self.__offset + + def tzname(self, dt): + return self.__name + + def dst(self, dt): + return datetime.timedelta(0) + + UTC = FixedOffset() + + @property + def asDateTime(self): + """Create :py:class:`datetime.datetime` object from a |ASN.1| object. + + Returns + ------- + : + new instance of :py:class:`datetime.datetime` object + """ + text = str(self) + if text.endswith('Z'): + tzinfo = TimeMixIn.UTC + text = text[:-1] + + elif '-' in text or '+' in text: + if '+' in text: + text, plusminus, tz = text.partition('+') + else: + text, plusminus, tz = text.partition('-') + + if self._shortTZ and len(tz) == 2: + tz += '00' + + if len(tz) != 4: + raise error.PyAsn1Error('malformed time zone offset %s' % tz) + + try: + minutes = int(tz[:2]) * 60 + int(tz[2:]) + if plusminus == '-': + minutes *= -1 + + except ValueError: + raise error.PyAsn1Error('unknown time specification %s' % self) + + tzinfo = TimeMixIn.FixedOffset(minutes, '?') + + else: + tzinfo = None + + if '.' in text or ',' in text: + if '.' in text: + text, _, ms = text.partition('.') + else: + text, _, ms = text.partition(',') + + try: + ms = int(ms) * 1000 + + except ValueError: + raise error.PyAsn1Error('bad sub-second time specification %s' % self) + + else: + ms = 0 + + if self._optionalMinutes and len(text) - self._yearsDigits == 6: + text += '0000' + elif len(text) - self._yearsDigits == 8: + text += '00' + + try: + dt = datetime.datetime.strptime(text, self._yearsDigits == 4 and '%Y%m%d%H%M%S' or '%y%m%d%H%M%S') + + except ValueError: + raise error.PyAsn1Error('malformed datetime format %s' % self) + + return dt.replace(microsecond=ms, tzinfo=tzinfo) + + @classmethod + def fromDateTime(cls, dt): + """Create |ASN.1| object from a :py:class:`datetime.datetime` object. + + Parameters + ---------- + dt: :py:class:`datetime.datetime` object + The `datetime.datetime` object to initialize the |ASN.1| object + from + + Returns + ------- + : + new instance of |ASN.1| value + """ + text = dt.strftime(cls._yearsDigits == 4 and '%Y%m%d%H%M%S' or '%y%m%d%H%M%S') + if cls._hasSubsecond: + text += '.%d' % (dt.microsecond // 1000) + + if dt.utcoffset(): + seconds = dt.utcoffset().seconds + if seconds < 0: + text += '-' + else: + text += '+' + text += '%.2d%.2d' % (seconds // 3600, seconds % 3600) + else: + text += 'Z' + + return cls(text) + + +class GeneralizedTime(char.VisibleString, TimeMixIn): + __doc__ = char.VisibleString.__doc__ + + #: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects + tagSet = char.VisibleString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 24) + ) + + # Optimization for faster codec lookup + typeId = char.VideotexString.getTypeId() + + _yearsDigits = 4 + _hasSubsecond = True + _optionalMinutes = True + _shortTZ = True + + +class UTCTime(char.VisibleString, TimeMixIn): + __doc__ = char.VisibleString.__doc__ + + #: Default :py:class:`~pyasn1.type.tag.TagSet` object for |ASN.1| objects + tagSet = char.VisibleString.tagSet.tagImplicitly( + tag.Tag(tag.tagClassUniversal, tag.tagFormatSimple, 23) + ) + + # Optimization for faster codec lookup + typeId = char.VideotexString.getTypeId() + + _yearsDigits = 2 + _hasSubsecond = False + _optionalMinutes = False + _shortTZ = False |