C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # Base classes for ASN.1 types import sys from pyasn1.type import constraint, tagmap, tag from pyasn1 import error class Asn1Item: pass class Asn1ItemBase(Asn1Item): # Set of tags for this ASN.1 type tagSet = tag.TagSet() # A list of constraint.Constraint instances for checking values subtypeSpec = constraint.ConstraintsIntersection() # Used for ambiguous ASN.1 types identification typeId = None def __init__(self, tagSet=None, subtypeSpec=None): if tagSet is None: self._tagSet = self.tagSet else: self._tagSet = tagSet if subtypeSpec is None: self._subtypeSpec = self.subtypeSpec else: self._subtypeSpec = subtypeSpec def _verifySubtypeSpec(self, value, idx=None): try: self._subtypeSpec(value, idx) except error.PyAsn1Error: c, i, t = sys.exc_info() raise c('%s at %s' % (i, self.__class__.__name__)) def getSubtypeSpec(self): return self._subtypeSpec def getTagSet(self): return self._tagSet def getEffectiveTagSet(self): return self._tagSet # used by untagged types def getTagMap(self): return tagmap.TagMap({self._tagSet: self}) def isSameTypeWith(self, other, matchTags=True, matchConstraints=True): return self is other or \ (not matchTags or \ self._tagSet == other.getTagSet()) and \ (not matchConstraints or \ self._subtypeSpec==other.getSubtypeSpec()) def isSuperTypeOf(self, other, matchTags=True, matchConstraints=True): """Returns true if argument is a ASN1 subtype of ourselves""" return (not matchTags or \ self._tagSet.isSuperTagSetOf(other.getTagSet())) and \ (not matchConstraints or \ (self._subtypeSpec.isSuperTypeOf(other.getSubtypeSpec()))) class NoValue: def __getattr__(self, attr): raise error.PyAsn1Error('No value for %s()' % attr) def __getitem__(self, i): raise error.PyAsn1Error('No value') def __repr__(self): return '%s()' % self.__class__.__name__ noValue = NoValue() # Base class for "simple" ASN.1 objects. These are immutable. class AbstractSimpleAsn1Item(Asn1ItemBase): defaultValue = noValue def __init__(self, value=None, tagSet=None, subtypeSpec=None): Asn1ItemBase.__init__(self, tagSet, subtypeSpec) if value is None or value is noValue: value = self.defaultValue if value is None or value is noValue: self.__hashedValue = value = noValue else: value = self.prettyIn(value) self._verifySubtypeSpec(value) self.__hashedValue = hash(value) self._value = value self._len = None def __repr__(self): r = [] if self._value is not self.defaultValue: r.append(self.prettyOut(self._value)) if self._tagSet is not self.tagSet: r.append('tagSet=%r' % (self._tagSet,)) if self._subtypeSpec is not self.subtypeSpec: r.append('subtypeSpec=%r' % (self._subtypeSpec,)) return '%s(%s)' % (self.__class__.__name__, ', '.join(r)) def __str__(self): return str(self._value) def __eq__(self, other): return self is other and True or 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 if sys.version_info[0] <= 2: def __nonzero__(self): return bool(self._value) else: def __bool__(self): return bool(self._value) def __hash__(self): return self.__hashedValue is noValue and hash(noValue) or self.__hashedValue def hasValue(self): return not isinstance(self._value, NoValue) def clone(self, value=None, tagSet=None, subtypeSpec=None): if value is None and tagSet is None and subtypeSpec is None: return self if value is None: value = self._value if tagSet is None: tagSet = self._tagSet if subtypeSpec is None: subtypeSpec = self._subtypeSpec return self.__class__(value, tagSet, subtypeSpec) def subtype(self, value=None, implicitTag=None, explicitTag=None, subtypeSpec=None): if value is None: value = self._value if implicitTag is not None: tagSet = self._tagSet.tagImplicitly(implicitTag) elif explicitTag is not None: tagSet = self._tagSet.tagExplicitly(explicitTag) else: tagSet = self._tagSet if subtypeSpec is None: subtypeSpec = self._subtypeSpec else: subtypeSpec = subtypeSpec + self._subtypeSpec return self.__class__(value, tagSet, subtypeSpec) def prettyIn(self, value): return value def prettyOut(self, value): return str(value) def prettyPrint(self, scope=0): if self.hasValue(): return self.prettyOut(self._value) else: return '' # XXX Compatibility stub def prettyPrinter(self, scope=0): return self.prettyPrint(scope) def prettyPrintType(self, scope=0): return '%s -> %s' % (self.getTagSet(), self.__class__.__name__) # # 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 AbstractConstructedAsn1Item(Asn1ItemBase): componentType = None sizeSpec = constraint.ConstraintsIntersection() def __init__(self, componentType=None, tagSet=None, subtypeSpec=None, sizeSpec=None): Asn1ItemBase.__init__(self, tagSet, subtypeSpec) if componentType is None: self._componentType = self.componentType else: self._componentType = componentType if sizeSpec is None: self._sizeSpec = self.sizeSpec else: self._sizeSpec = sizeSpec self._componentValues = [] self._componentValuesSet = 0 def __repr__(self): r = [] if self._componentType is not self.componentType: r.append('componentType=%r' % (self._componentType,)) if self._tagSet is not self.tagSet: r.append('tagSet=%r' % (self._tagSet,)) if self._subtypeSpec is not self.subtypeSpec: r.append('subtypeSpec=%r' % (self._subtypeSpec,)) r = '%s(%s)' % (self.__class__.__name__, ', '.join(r)) if self._componentValues: r += '.setComponents(%s)' % ', '.join([repr(x) for x in self._componentValues]) return r def __eq__(self, other): return self is other and True or self._componentValues == other def __ne__(self, other): return self._componentValues != other def __lt__(self, other): return self._componentValues < other def __le__(self, other): return self._componentValues <= other def __gt__(self, other): return self._componentValues > other def __ge__(self, other): return self._componentValues >= other if sys.version_info[0] <= 2: def __nonzero__(self): return bool(self._componentValues) else: def __bool__(self): return bool(self._componentValues) def getComponentTagMap(self): raise error.PyAsn1Error('Method not implemented') def _cloneComponentValues(self, myClone, cloneValueFlag): pass def clone(self, tagSet=None, subtypeSpec=None, sizeSpec=None, cloneValueFlag=None): if tagSet is None: tagSet = self._tagSet if subtypeSpec is None: subtypeSpec = self._subtypeSpec if sizeSpec is None: sizeSpec = self._sizeSpec r = self.__class__(self._componentType, tagSet, subtypeSpec, sizeSpec) if cloneValueFlag: self._cloneComponentValues(r, cloneValueFlag) return r def subtype