summaryrefslogtreecommitdiff
path: root/service/pixelated/bitmask_libraries/certs.py
blob: a321e00e90ef6866b39414260105988eb9d9dda6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
#
# 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._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)