def allowed_status_keys(self):
"""Return the subset of IStatusUpdate keys
that are related to UUIDs of accessible contexts.
I.e. blacklist all IStatusUpdate that has a context
which we don't have permission to access.
This is the key security protection used by all getters.
Because it's called a lot we're caching results per user request.
"""
uuid_blacklist = self._blacklist_microblogcontext_uuids()
if not uuid_blacklist:
return self._status_mapping.keys()
else:
# for each uid, expand uid into set of statusids
blacklisted_treesets = (self._uuid_mapping.get(uuid)
for uuid in uuid_blacklist
if uuid in self._uuid_mapping.keys())
# merge sets of blacklisted statusids into single blacklist
blacklisted_statusids = reduce(LLBTree.union,
blacklisted_treesets,
LLBTree.TreeSet())
# subtract blacklisted statusids from all statusids
all_statusids = LLBTree.LLSet(self._status_mapping.keys())
return LLBTree.difference(all_statusids,
blacklisted_statusids)
return self._allowed_status_keys()
def allowed_status_keys(self):
"""Return the subset of IStatusUpdate keys
that are related to UUIDs of accessible contexts.
I.e. blacklist all IStatusUpdate that has a context
which we don't have permission to access.
This is the key security protection used by all getters.
Because it's called a lot we're caching results per user request.
"""
uuid_blacklist = self._blacklist_microblogcontext_uuids()
if not uuid_blacklist:
return self._status_mapping.keys()
else:
# for each uid, expand uid into set of statusids
blacklisted_treesets = (self._uuid_mapping.get(uuid)
for uuid in uuid_blacklist
if uuid in self._uuid_mapping.keys())
# merge sets of blacklisted statusids into single blacklist
blacklisted_statusids = reduce(LLBTree.union,
blacklisted_treesets,
LLBTree.TreeSet())
# subtract blacklisted statusids from all statusids
all_statusids = LLBTree.LLSet(self._status_mapping.keys())
return LLBTree.difference(all_statusids,
blacklisted_statusids)
return self._allowed_status_keys()
def _allowed_status_keys(self, uuid_blacklist=[]):
if not uuid_blacklist:
return self._status_mapping.keys()
else:
# for each uid, expand uid into set of statusids
blacklisted_treesets = (
self._uuid_mapping.get(uuid) for uuid in uuid_blacklist if uuid in self._uuid_mapping.keys()
)
# merge sets of blacklisted statusids into single blacklist
blacklisted_statusids = reduce(LLBTree.union, blacklisted_treesets, LLBTree.TreeSet())
# subtract blacklisted statusids from all statusids
all_statusids = LLBTree.LLSet(self._status_mapping.keys())
return LLBTree.difference(all_statusids, blacklisted_statusids)
def _allowed_status_keys(self, uuid_blacklist=[]):
if not uuid_blacklist:
return self._status_mapping.keys()
else:
# for each uid, expand uid into set of statusids
blacklisted_treesets = (self._uuid_mapping.get(uuid)
for uuid in uuid_blacklist
if uuid in self._uuid_mapping.keys())
# merge sets of blacklisted statusids into single blacklist
blacklisted_statusids = reduce(LLBTree.union, blacklisted_treesets,
LLBTree.TreeSet())
# subtract blacklisted statusids from all statusids
all_statusids = LLBTree.LLSet(self._status_mapping.keys())
return LLBTree.difference(all_statusids, blacklisted_statusids)
