def set_current_user_from_post(self):
if not hasattr(self, "_current_user"):
self._current_user = None
signed_req = self.request.get('signed_request')
logging.debug('signed_req:' + signed_req)
(encoded_sig, payload) = signed_req.split('.')
sig = base64_decode(encoded_sig)
data_str = base64_decode(payload)
#logging.debug("(sig,payload) = (%s,%s)" % (sig,data_str))
data = facebook._parse_json(data_str)
if data['user_id']:
# Store a local instance of the user data so we don't need
# a round-trip to Facebook on every request
user = User.get_by_key_name(data['user_id'])
access_token = data['oauth_token']
if not user:
logging.debug("no current user in db. adding user of id %s, access_token:%s" % (data['user_id'], access_token))
graph = facebook.GraphAPI(access_token)
profile = graph.get_object("me")
user = User(key_name=str(profile["id"]),
id=str(profile["id"]),
name=profile["name"],
profile_url=profile["link"],
access_token=access_token)
user.put()
elif user.access_token != access_token:
logging.debug("new access token for user %s(%s): %s" % (user.name,data['user_id'],access_token))
user.access_token = access_token
user.put()
self._current_user = user
def simple_request(path):
"""Fetches the given path in the Graph API.
We translate args to a valid query string. If post_args is
given, we send a POST request to the given path with the given
arguments.
"""
try:
file = urlopen(path)
except HTTPError, e:
response = facebook._parse_json(e.read())
raise facebook.GraphAPIError(response)
def graph_put_file(self, path, argname, filename, file, **post_args):
"""put a file to facebook.
- argname : api name, probably 'source'
- filename: name of file itself, i.e. foo.jpg
"""
form = MultipartForm.MultiPartForm()
form.add_field("access_token", self.current_user.access_token)
for a in post_args:
logging.debug("putting arg %s:%s" % (a, post_args[a]))
form.add_field(a, post_args[a])
form.add_file(argname, filename, file)
req = urllib2.Request("https://graph.facebook.com/" + path)
body = str(form)
req.add_header("Content-type", form.get_content_type())
req.add_header("Content-length", len(body))
req.add_data(body)
s = urllib2.urlopen(req).read()
return facebook._parse_json(s)
"""Fetches the given path in the Graph API.
We translate args to a valid query string. If post_args is
given, we send a POST request to the given path with the given
arguments.
"""
try:
file = urlopen(path)
except HTTPError, e:
response = facebook._parse_json(e.read())
raise facebook.GraphAPIError(response)
try:
fileInfo = file.info()
if fileInfo.maintype == 'text':
response = facebook._parse_json(file.read())
elif fileInfo.maintype == 'image':
mimetype = fileInfo['content-type']
response = {
"data": file.read(),
"mime-type": mimetype,
"url": file.url,
}
else:
raise facebook.GraphAPIError('Maintype was not text or image')
finally:
file.close()
if response and isinstance(response, dict) and response.get("error"):
raise GraphAPIError(response["error"]["type"],
response["error"]["message"])
