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from six import PY3, binary_type, text_type
from cryptography.hazmat.bindings.openssl.binding import Binding
binding = Binding()
ffi = binding.ffi
lib = binding.lib
def exception_from_error_queue(exceptionType):
def text(charp):
return native(ffi.string(charp))
errors = []
while True:
error = lib.ERR_get_error()
if error == 0:
break
errors.append((
text(lib.ERR_lib_error_string(error)),
text(lib.ERR_func_error_string(error)),
text(lib.ERR_reason_error_string(error))))
raise exceptionType(errors)
def native(s):
"""
Convert :py:class:`bytes` or :py:class:`unicode` to the native
:py:class:`str` type, using UTF-8 encoding if conversion is necessary.
:raise UnicodeError: The input string is not UTF-8 decodeable.
:raise TypeError: The input is neither :py:class:`bytes` nor
:py:class:`unicode`.
"""
if not isinstance(s, (binary_type, text_type)):
raise TypeError("%r is neither bytes nor unicode" % s)
if PY3:
if isinstance(s, binary_type):
return s.decode("utf-8")
else:
if isinstance(s, text_type):
return s.encode("utf-8")
return s
if PY3:
def byte_string(s):
return s.encode("charmap")
else:
def byte_string(s):
return s
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