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#
# Copyright (c) 2014 ThoughtWorks, Inc.
#
# Pixelated is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pixelated 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
import os
import requests
import json
from leap.common import ca_bundle
from .config import AUTO_DETECT_CA_BUNDLE
LEAP_CERT = None
LEAP_FINGERPRINT = None
PACKAGED_CERTS_HOME = os.path.abspath(os.path.join(os.path.abspath(__file__), "..", "..", "certificates"))
def which_api_CA_bundle(provider):
return str(LeapCertificate(provider).api_ca_bundle())
def which_bootstrap_cert_fingerprint():
return LEAP_FINGERPRINT
def which_bootstrap_CA_bundle(provider):
if LEAP_CERT is not None:
return LEAP_CERT
return str(LeapCertificate(provider).auto_detect_bootstrap_ca_bundle())
def refresh_ca_bundle(provider):
LeapCertificate(provider).refresh_ca_bundle()
class LeapCertificate(object):
def __init__(self, provider):
self._config = provider.config
self._server_name = provider.server_name
self._certs_home = self._config.certs_home
self._provider = provider
def auto_detect_bootstrap_ca_bundle(self):
if self._config.bootstrap_ca_cert_bundle == AUTO_DETECT_CA_BUNDLE:
local_cert = self._local_bootstrap_server_cert()
if local_cert:
return local_cert
else:
return ca_bundle.where()
else:
return self._config.bootstrap_ca_cert_bundle
def api_ca_bundle(self):
if self._provider.config.ca_cert_bundle:
return self._provider.config.ca_cert_bundle
cert_file = self._api_cert_file()
if not os.path.isfile(cert_file):
self._download_server_cert(cert_file)
return cert_file
def refresh_ca_bundle(self):
cert_file = self._api_cert_file()
self._download_server_cert(cert_file)
def _api_cert_file(self):
certs_root = self._api_certs_root_path()
return os.path.join(certs_root, 'api.pem')
def _api_certs_root_path(self):
path = os.path.join(self._provider.config.leap_home, 'providers', self._server_name, 'keys', 'client')
if not os.path.isdir(path):
os.makedirs(path, 0700)
return path
def _local_bootstrap_server_cert(self):
cert_file = self._bootstrap_certs_cert_file()
if os.path.isfile(cert_file):
return cert_file
cert_file = os.path.join(PACKAGED_CERTS_HOME, '%s.ca.crt' % self._server_name)
if os.path.exists(cert_file):
return cert_file
# else download the file
cert_file = self._bootstrap_certs_cert_file()
response = requests.get('https://%s/provider.json' % self._server_name)
provider_data = json.loads(response.content)
ca_cert_uri = str(provider_data['ca_cert_uri'])
response = requests.get(ca_cert_uri)
with open(cert_file, 'w') as file:
file.write(response.content)
return cert_file
def _bootstrap_certs_cert_file(self):
path = os.path.join(self._provider.config.leap_home, 'providers', self._server_name)
if not os.path.isdir(path):
os.makedirs(path, 0700)
file_path = os.path.join(path, '%s.ca.crt' % self._server_name)
return file_path
def _download_server_cert(self, cert_file_name):
cert = self._provider.fetch_valid_certificate()
with open(cert_file_name, 'w') as file:
file.write(cert)
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