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# -*- encoding: utf-8 -*-
# couchdb.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Classes for working with CouchDB or BigCouch instances which store email alias
maps, user UUIDs, and GPG keyIDs.
"""
from paisley import client
from twisted.python import log
class ConnectedCouchDB(client.CouchDB):
"""
Connect to a CouchDB instance.
CouchDB document for testing is '_design', and the view is simply
a preconfigured set of mapped responses.
"""
def __init__(self, host, port=5984, dbName=None, username=None,
password=None, *args, **kwargs):
"""
Connect to a CouchDB instance.
:param host: A hostname string for the CouchDB server.
:type host: str
:param port: The port of the CouchDB server.
:type port: int
:param dbName: (optional) The default database to bind queries to.
:type dbName: str
:param username: (optional) The username for authorization.
:type username: str
:param str password: (optional) The password for authorization.
:type password: str
"""
client.CouchDB.__init__(self,
host,
port=port,
dbName=dbName,
username=username,
password=password,
*args, **kwargs)
self._cache = {}
def createDB(self, dbName):
"""
Overrides ``paisley.client.CouchDB.createDB``.
"""
pass
def deleteDB(self, dbName):
"""
Overrides ``paisley.client.CouchDB.deleteDB``.
"""
pass
def getUuidAndPubkey(self, address):
"""
Query couch and return a deferred that will fire with the uuid and pgp
public key for address.
:param address: A string representing the email or alias to check.
:type address: str
:return: A deferred that will fire with the user's uuid and pgp public
key.
:rtype twisted.defer.Deferred
"""
# TODO: Cache results
d = self.openView(docId="Identity",
viewId="by_address/",
key=address,
reduce=False,
include_docs=True)
def _get_uuid_and_pubkey_cbk(result):
uuid = None
pubkey = None
if result["rows"]:
doc = result["rows"][0]["doc"]
uuid = doc["user_id"]
if "keys" in doc:
pubkey = doc["keys"]["pgp"]
return uuid, pubkey
d.addCallback(_get_uuid_and_pubkey_cbk)
return d
def getPubkey(self, uuid):
"""
Query couch and return a deferred that will fire with the pgp public
key for user with given uuid.
:param uuid: The uuid of a user
:type uuid: str
:return: A deferred that will fire with the pgp public key for
the user.
:rtype: Deferred
"""
d = self.openView(docId="Identity",
viewId="by_user_id/",
key=uuid,
reduce=False,
include_docs=True)
def _get_pubkey_cbk(result):
pubkey = None
try:
doc = result["rows"][0]["doc"]
pubkey = doc["keys"]["pgp"]
except (KeyError, IndexError):
pass
return pubkey
d.addCallbacks(_get_pubkey_cbk, log.err)
return d
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