diff options
Diffstat (limited to 'common/src/leap/soledad/common/couch/state.py')
| -rw-r--r-- | common/src/leap/soledad/common/couch/state.py | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/common/src/leap/soledad/common/couch/state.py b/common/src/leap/soledad/common/couch/state.py index a7f5b7b6..a4841d0d 100644 --- a/common/src/leap/soledad/common/couch/state.py +++ b/common/src/leap/soledad/common/couch/state.py @@ -19,13 +19,10 @@ Server state using CouchDatabase as backend. """ import couchdb import re -import time from urlparse import urljoin -from hashlib import sha512 from leap.soledad.common.log import getLogger from leap.soledad.common.couch import CouchDatabase -from leap.soledad.common.couch import couch_server from leap.soledad.common.couch import CONFIG_DOC_ID from leap.soledad.common.couch import SCHEMA_VERSION from leap.soledad.common.couch import SCHEMA_VERSION_KEY @@ -59,12 +56,6 @@ class CouchServerState(ServerState): Inteface of the WSGI server with the CouchDB backend. """ - TOKENS_DB_PREFIX = "tokens_" - TOKENS_DB_EXPIRE = 30 * 24 * 3600 # 30 days in seconds - TOKENS_TYPE_KEY = "type" - TOKENS_TYPE_DEF = "Token" - TOKENS_USER_ID_KEY = "user_id" - def __init__(self, couch_url, create_cmd=None, check_schema_versions=False): """ @@ -164,40 +155,3 @@ class CouchServerState(ServerState): delete databases. """ raise Unauthorized() - - def verify_token(self, uuid, token): - """ - Query couchdb to decide if C{token} is valid for C{uuid}. - - @param uuid: The user uuid. - @type uuid: str - @param token: The token. - @type token: str - """ - with couch_server(self.couch_url) as server: - # the tokens db rotates every 30 days, and the current db name is - # "tokens_NNN", where NNN is the number of seconds since epoch - # divide dby the rotate period in seconds. When rotating, old and - # new tokens db coexist during a certain window of time and valid - # tokens are replicated from the old db to the new one. See: - # https://leap.se/code/issues/6785 - dbname = self._tokens_dbname() - db = server[dbname] - # lookup key is a hash of the token to prevent timing attacks. - token = db.get(sha512(token).hexdigest()) - if token is None: - return False - # we compare uuid hashes to avoid possible timing attacks that - # might exploit python's builtin comparison operator behaviour, - # which fails immediatelly when non-matching bytes are found. - couch_uuid_hash = sha512(token[self.TOKENS_USER_ID_KEY]).digest() - req_uuid_hash = sha512(uuid).digest() - if token[self.TOKENS_TYPE_KEY] != self.TOKENS_TYPE_DEF \ - or couch_uuid_hash != req_uuid_hash: - return False - return True - - def _tokens_dbname(self): - dbname = self.TOKENS_DB_PREFIX + \ - str(int(time.time() / self.TOKENS_DB_EXPIRE)) - return dbname |