diff options
Diffstat (limited to 'pyasn1/codec/der')
-rw-r--r-- | pyasn1/codec/der/decoder.py | 48 | ||||
-rw-r--r-- | pyasn1/codec/der/encoder.py | 25 |
2 files changed, 51 insertions, 22 deletions
diff --git a/pyasn1/codec/der/decoder.py b/pyasn1/codec/der/decoder.py index 1a13fdb..b9526c3 100644 --- a/pyasn1/codec/der/decoder.py +++ b/pyasn1/codec/der/decoder.py @@ -7,40 +7,58 @@ from pyasn1.codec.cer import decoder from pyasn1.type import univ -__all__ = ['decode'] +__all__ = ['decode', 'StreamingDecoder'] -class BitStringDecoder(decoder.BitStringDecoder): +class BitStringPayloadDecoder(decoder.BitStringPayloadDecoder): supportConstructedForm = False -class OctetStringDecoder(decoder.OctetStringDecoder): +class OctetStringPayloadDecoder(decoder.OctetStringPayloadDecoder): supportConstructedForm = False + # TODO: prohibit non-canonical encoding -RealDecoder = decoder.RealDecoder +RealPayloadDecoder = decoder.RealPayloadDecoder -tagMap = decoder.tagMap.copy() -tagMap.update( - {univ.BitString.tagSet: BitStringDecoder(), - univ.OctetString.tagSet: OctetStringDecoder(), - univ.Real.tagSet: RealDecoder()} +TAG_MAP = decoder.TAG_MAP.copy() +TAG_MAP.update( + {univ.BitString.tagSet: BitStringPayloadDecoder(), + univ.OctetString.tagSet: OctetStringPayloadDecoder(), + univ.Real.tagSet: RealPayloadDecoder()} ) -typeMap = decoder.typeMap.copy() +TYPE_MAP = decoder.TYPE_MAP.copy() # Put in non-ambiguous types for faster codec lookup -for typeDecoder in tagMap.values(): +for typeDecoder in TAG_MAP.values(): if typeDecoder.protoComponent is not None: typeId = typeDecoder.protoComponent.__class__.typeId - if typeId is not None and typeId not in typeMap: - typeMap[typeId] = typeDecoder + if typeId is not None and typeId not in TYPE_MAP: + TYPE_MAP[typeId] = typeDecoder -class Decoder(decoder.Decoder): +class SingleItemDecoder(decoder.SingleItemDecoder): + __doc__ = decoder.SingleItemDecoder.__doc__ + + TAG_MAP = TAG_MAP + TYPE_MAP = TYPE_MAP + supportIndefLength = False +class StreamingDecoder(decoder.StreamingDecoder): + __doc__ = decoder.StreamingDecoder.__doc__ + + SINGLE_ITEM_DECODER = SingleItemDecoder + + +class Decoder(decoder.Decoder): + __doc__ = decoder.Decoder.__doc__ + + STREAMING_DECODER = StreamingDecoder + + #: Turns DER octet stream into an ASN.1 object. #: #: Takes DER octet-stream and decode it into an ASN.1 object @@ -91,4 +109,4 @@ class Decoder(decoder.Decoder): #: SequenceOf: #: 1 2 3 #: -decode = Decoder(tagMap, typeMap) +decode = Decoder() diff --git a/pyasn1/codec/der/encoder.py b/pyasn1/codec/der/encoder.py index 90e982d..1a6af82 100644 --- a/pyasn1/codec/der/encoder.py +++ b/pyasn1/codec/der/encoder.py @@ -8,7 +8,7 @@ from pyasn1 import error from pyasn1.codec.cer import encoder from pyasn1.type import univ -__all__ = ['encode'] +__all__ = ['Encoder', 'encode'] class SetEncoder(encoder.SetEncoder): @@ -42,23 +42,34 @@ class SetEncoder(encoder.SetEncoder): else: return compType.tagSet -tagMap = encoder.tagMap.copy() -tagMap.update({ + +TAG_MAP = encoder.TAG_MAP.copy() + +TAG_MAP.update({ # Set & SetOf have same tags univ.Set.tagSet: SetEncoder() }) -typeMap = encoder.typeMap.copy() -typeMap.update({ +TYPE_MAP = encoder.TYPE_MAP.copy() + +TYPE_MAP.update({ # Set & SetOf have same tags univ.Set.typeId: SetEncoder() }) -class Encoder(encoder.Encoder): +class SingleItemEncoder(encoder.SingleItemEncoder): fixedDefLengthMode = True fixedChunkSize = 0 + TAG_MAP = TAG_MAP + TYPE_MAP = TYPE_MAP + + +class Encoder(encoder.Encoder): + SINGLE_ITEM_ENCODER = SingleItemEncoder + + #: Turns ASN.1 object into DER octet stream. #: #: Takes any ASN.1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative) @@ -104,4 +115,4 @@ class Encoder(encoder.Encoder): #: >>> encode(seq) #: b'0\t\x02\x01\x01\x02\x01\x02\x02\x01\x03' #: -encode = Encoder(tagMap, typeMap) +encode = Encoder() |