Latest change to __repr__ breaks Flask-Oauthlib?

[olegpidsadnyi]

Hi,
The regex substitution on the body introduced in the latest PR breaks functionality for Flask-Oauthlib.
There they pass a body as a dictionary for validation, so regex can't work.

Should the body be cast to string before sanitization?

[Alain1405]

Here's the traceback:

Traceback (most recent call last):
  File "project/tests/test_main.py", line 120, in test_add_device_user
    token = self.get_access_token()
  File "project/tests/util.py", line 95, in get_access_token
    token_response = self.client.get(url_for('oauth.access_token'), data=data)
  File "project/venv-test/lib/python2.7/site-packages/werkzeug/test.py", line 778, in get
    return self.open(*args, **kw)
  File "project/venv-test/lib/python2.7/site-packages/flask/testing.py", line 108, in open
    follow_redirects=follow_redirects)
  File "project/venv-test/lib/python2.7/site-packages/werkzeug/test.py", line 751, in open
    response = self.run_wsgi_app(environ, buffered=buffered)
  File "project/venv-test/lib/python2.7/site-packages/werkzeug/test.py", line 668, in run_wsgi_app
    rv = run_wsgi_app(self.application, environ, buffered=buffered)
  File "project/venv-test/lib/python2.7/site-packages/werkzeug/test.py", line 871, in run_wsgi_app
    app_rv = app(environ, start_response)
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "project/venv-test/lib/python2.7/site-packages/flask_cors/extension.py", line 110, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "project/venv-test/lib/python2.7/site-packages/flask_cors/extension.py", line 110, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "project/venv-test/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "project/venv-test/lib/python2.7/site-packages/flask_oauthlib/provider/oauth2.py", line 490, in decorated
    uri, http_method, body, headers, credentials
  File "project/venv-test/lib/python2.7/site-packages/oauthlib/oauth2/rfc6749/endpoints/base.py", line 64, in wrapper
    return f(endpoint, uri, *args, **kwargs)
  File "project/venv-test/lib/python2.7/site-packages/oauthlib/oauth2/rfc6749/endpoints/token.py", line 100, in create_token_response
    request, self.default_token_type)
  File "project/venv-test/lib/python2.7/site-packages/oauthlib/oauth2/rfc6749/grant_types/resource_owner_password_credentials.py", line 107, in create_token_response
    log.debug('Validating access token request, %r.', request)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 1153, in debug
    self._log(DEBUG, msg, args, **kwargs)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 1284, in _log
    self.handle(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 1294, in handle
    self.callHandlers(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 1334, in callHandlers
    hdlr.handle(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 757, in handle
    self.emit(record)
  File "project/venv-test/lib/python2.7/site-packages/nose/plugins/logcapture.py", line 82, in emit
    self.buffer.append(self.format(record))
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 732, in format
    return fmt.format(record)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 471, in format
    record.message = record.getMessage()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/logging/__init__.py", line 335, in getMessage
    msg = msg % self.args
  File "project/venv-test/lib/python2.7/site-packages/oauthlib/common.py", line 419, in __repr__
    body = SANITIZE_PATTERN.sub('\1<SANITIZED>', body)
TypeError: expected string or buffer

[threadproc]

I wrote a quick fix for this in #425