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# -*- coding: utf-8 -*-
# utils.py
# Copyright (C) 2013, 2014 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/>.
"""
Backend utilities to handle ZMQ certificates.
"""
import os
import shutil
import zmq.auth
from leap.bitmask.util import get_path_prefix
from leap.common.files import mkdir_p
KEYS_DIR = os.path.join(get_path_prefix(), 'leap', 'zmq_certificates')
def generate_certificates():
"""
Generate client and server CURVE certificate files.
"""
# Create directory for certificates, remove old content if necessary
if os.path.exists(KEYS_DIR):
shutil.rmtree(KEYS_DIR)
mkdir_p(KEYS_DIR)
# create new keys in certificates dir
# public_file, secret_file = create_certificates(...)
zmq.auth.create_certificates(KEYS_DIR, "frontend")
zmq.auth.create_certificates(KEYS_DIR, "backend")
def get_frontend_certificates():
"""
Return the frontend's public and secret certificates.
"""
frontend_secret_file = os.path.join(KEYS_DIR, "frontend.key_secret")
public, secret = zmq.auth.load_certificate(frontend_secret_file)
return public, secret
def get_backend_certificates(base_dir='.'):
"""
Return the backend's public and secret certificates.
"""
backend_secret_file = os.path.join(KEYS_DIR, "backend.key_secret")
public, secret = zmq.auth.load_certificate(backend_secret_file)
return public, secret
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