common.decode_params_utf8() fails on broken unicode data #414
Description
I use django-oauth2-provider library for authentication via oauth2 which involves oauthlib code. When I pass wrong unicode data in GET parameters (e.g. u'\xe4'), I get an error:
Traceback (most recent call last):
File "/home/dan/venvs/openspb/local/lib/python2.7/site-packages/oauthlib/oauth2/rfc6749/endpoints/base.py", line 64, in wrapper
return f(endpoint, uri, *args, **kwargs)
File "/home/dan/venvs/openspb/local/lib/python2.7/site-packages/oauthlib/oauth2/rfc6749/endpoints/resource.py", line 68, in verify_request
request = Request(uri, http_method, body, headers)
File "/home/dan/venvs/openspb/local/lib/python2.7/site-packages/oauthlib/common.py", line 402, in __init__
self._params.update(dict(urldecode(self.uri_query)))
File "/home/dan/venvs/openspb/local/lib/python2.7/site-packages/oauthlib/common.py", line 161, in urldecode
return decode_params_utf8(params)
File "/home/dan/venvs/openspb/local/lib/python2.7/site-packages/oauthlib/common.py", line 108, in decode_params_utf8
v.decode('utf-8') if isinstance(v, bytes_type) else v))
File "/home/dan/venvs/openspb/lib/python2.7/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe4 in position 2: unexpected end of data