From 260805b9967184841c4499f94713a9a48c49a813 Mon Sep 17 00:00:00 2001
From: drebs <drebs@leap.se>
Date: Sun, 18 Dec 2016 16:36:39 -0200
Subject: [feat] use twisted web http auth and creds

---
 common/src/leap/soledad/common/couch/state.py | 46 ---------------------------
 1 file changed, 46 deletions(-)

(limited to 'common/src/leap/soledad')

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
-- 
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