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Fallback to 1-by-1 fetch when determining capas #222

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Merged
MatthiasValvekens merged 1 commit into from
Dec 7, 2025
Merged

Fallback to 1-by-1 fetch when determining capas #222

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9 changes: 8 additions & 1 deletion pkcs11/_pkcs11.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -1366,8 +1366,15 @@ cdef object make_object(Session session, CK_OBJECT_HANDLE handle) with gil:
# Determine a list of base classes to manufacture our class with
try:
attributes = wrapper.get_attribute_list(&attr_keys[0], 8)
except (AttributeTypeInvalid, FunctionFailed) as e:
except PKCS11Error:
# retry fetching the flags one by one, some tokens do not implement error handling
# on bulk fetches correctly.
attributes = {}
for key in attr_keys:
try:
attributes[key] = wrapper[key]
except (AttributeTypeInvalid, AttributeSensitive, FunctionFailed):
continue

object_class = attributes.get(Attribute.CLASS, session.attribute_mapper)
bases = (_CLASS_MAP[object_class],)
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