Question

I’m trying to get site in a dropbox working mainly to figure out how to use dropbox on appengine.

the python:
c:\Program Files (x86)\Google\google_appengine>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win
32

Traceback (most recent call last):
  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\webapp\_webapp25.py", line 701, in __call__
    handler.get(*groups)
  File "C:\youiestsiteinadropbox\siteinadropbox\handlers\dropboxhandlers.py", line 38, in new_f
    f(self, *args, **kwargs)
  File "C:\youiestsiteinadropbox\siteinadropbox\handlers\dropboxhandlers.py", line 65, in get
    self.dropbox_auth_callback(self.site)
  File "C:\youiestsiteinadropbox\siteinadropbox\handlers\dropboxhandlers.py", line 118, in dropbox_auth_callback
    access_token = models.Site.dropbox_auth.obtain_access_token(token, "")
  File "C:\youiestsiteinadropbox\dropbox\auth.py", line 177, in obtain_access_token
    self.oauth_request.sign_request(self.signature_method_hmac_sha1, self.consumer, token)
  File "C:\youiestsiteinadropbox\oauth\oauth.py", line 259, in sign_request
    self.build_signature(signature_method, consumer, token))
  File "C:\youiestsiteinadropbox\oauth\oauth.py", line 263, in build_signature
    return signature_method.build_signature(self, consumer, token)
  File "C:\youiestsiteinadropbox\oauth\oauth.py", line 634, in build_signature
    hashed = hmac.new(key, raw, sha)
  File "C:\Python27\lib\hmac.py", line 133, in new
    return HMAC(key, msg, digestmod)
  File "C:\Python27\lib\hmac.py", line 72, in __init__
    self.outer.update(key.translate(trans_5C))
TypeError: character mapping must return integer, None or unicode

The last call made inside the app is:

File “C:\youiestsiteinadropbox\siteinadropbox\handlers\dropboxhandlers.py”, line 118, in dropbox_auth_callback
access_token = models.Site.dropbox_auth.obtain_access_token(token, “”)

Not having much success converting this part to unicode. Any ideas or other pointers on how to get started with dropbox on appengine? Thanks in advance.

Answer 1

I haven’t ever used siteinadropbox, but the end cause of this error is that the key variable from the last is a unicode object, when the code is expecting it to be a str object. Not a particularly helpful message, I know.

I checked out the siteinadropbox code and checked to see where that key value is coming from, and unless there are shenanigans going on somewhere, it will only be unicode when your dropbox.auth.Authenticator instance’s self.consumer.secret is unicode or when token.secret from dropbox_auth_callback is unicode. I don’t see with a cursory examination how either of those could happen. Did you happen to pass in a custom config dict when creating your Authenticator, or did you follow the pattern of using Authenticator.load_config, as is done in the siteinadropbox/models/site.py and test/dbtools.py examples?