def __init__(self, api_key, api_secret):
"""
Create a new FlickrApp object.
Remember, this class is not meant to be used on it's own. Rather
it is a base class that you subclass in your own application. For
example:
class MyFlickrApp (FlickrApp) :
def init (self) :
api_key = "this part is left to you"
api_secret = "to squirt in to your application"
FlickrApp.__init__(self, api_key, api_secret)
"""
webapp.RequestHandler.__init__(self)
self._api_key = api_key
self._api_secret = api_secret
self.api = flickr.API(self._api_key, self._api_secret)
self.user = None
self.perms_map = {'read': 1, 'write': 2, 'delete': 3}
self.crypto = None
self.canhas_crypto()
def do_flickr_auth (self, min_perms=None, redir=None) :
"""
This method will generate and redirect the user to the Flickr
API Auth endpoint where the user will be prompted to approve
your request for a Flickr token (with 'min_perms' permissions).
"""
args = {'api_key' : self._api_key}
extra = []
if redir :
extra.append('redir=%s' % redir)
else :
extra.append('redir=%s' % urllib.quote(self.request.path))
crumb = self.generate_crumb(None, 'flickrauth', 5)
extra.append('crumb=%s' % urllib.quote(crumb))
args['extra'] = "&".join(extra)
if min_perms:
args['perms'] = min_perms
sig = flickr.sign_args(self._api_secret, args)
args['api_sig'] = sig
query = urllib.urlencode(args)
url = "http://www.flickr.com/services/auth/?%s" % query
self.redirect(url)
def do_flickr_auth(self, min_perms=None, redir=None):
"""
This method will generate and redirect the user to the Flickr
API Auth endpoint where the user will be prompted to approve
your request for a Flickr token (with 'min_perms' permissions).
"""
args = {'api_key': self._api_key}
extra = []
if redir:
extra.append('redir=%s' % redir)
else:
extra.append('redir=%s' % urllib.quote(self.request.path))
crumb = self.generate_crumb(None, 'flickrauth', 5)
extra.append('crumb=%s' % urllib.quote(crumb))
args['extra'] = "&".join(extra)
if min_perms:
args['perms'] = min_perms
sig = flickr.sign_args(self._api_secret, args)
args['api_sig'] = sig
query = urllib.urlencode(args)
url = "http://www.flickr.com/services/auth/?%s" % query
self.redirect(url)
def generate_signature(self):
required = ('crumb', )
skip_list = ('crumb', 'format', 'method')
if not self.ensure_args(required):
return
if not self.ensure_crumb('method=signature'):
return
query = self.request.queryvars
args = {}
for key, value in query.items():
if key in skip_list:
continue
args[key] = value
sig = flickr.sign_args(self._api_secret, args)
self.api_ok({'signature': sig})
return
def generate_signature (self) :
required = ('crumb',)
skip_list = ('crumb', 'format', 'method')
if not self.ensure_args(required) :
return
if not self.ensure_crumb('method=signature') :
return
query = self.request.queryvars
args = {}
for key, value in query.items() :
if key in skip_list :
continue
args[ key ] = value
sig = flickr.sign_args(self._api_secret, args)
self.api_ok({'signature' : sig})
return
def proxy_api_call (self, method, args, ttl=0) :
args['method'] = method
sig = flickr.sign_args(self._api_secret, args)
memkey = "%s_%s" % (method, sig)
cache = memcache.get(memkey)
if cache :
return cache
rsp = self.api_call(method, args)
if not rsp :
return None
if rsp['stat'] == 'ok' :
memcache.add(memkey, rsp, ttl)
return rsp
def proxy_api_call(self, method, args, ttl=0):
args['method'] = method
sig = flickr.sign_args(self._api_secret, args)
memkey = "%s_%s" % (method, sig)
cache = memcache.get(memkey)
if cache:
return cache
rsp = self.api_call(method, args)
if not rsp:
return None
if rsp['stat'] == 'ok':
memcache.add(memkey, rsp, ttl)
return rsp
def flickr_sign_args (self, args) : return flickr.sign_args(self._api_secret, args)
def flickr_sign_args(self, args):
return flickr.sign_args(self._api_secret, args)
