summaryrefslogtreecommitdiffstats
path: root/lib/ansible/galaxy/token.py
blob: 313d007379bb5ad8e124489facedadbf375832da (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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
########################################################################
#
# (C) 2015, Chris Houseknecht <chouse@ansible.com>
#
# This file is part of Ansible
#
# Ansible 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.
#
# Ansible 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 Ansible.  If not, see <http://www.gnu.org/licenses/>.
#
########################################################################
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import base64
import os
import json
from stat import S_IRUSR, S_IWUSR

from ansible import constants as C
from ansible.galaxy.user_agent import user_agent
from ansible.module_utils.common.text.converters import to_bytes, to_native, to_text
from ansible.module_utils.common.yaml import yaml_dump, yaml_load
from ansible.module_utils.urls import open_url
from ansible.utils.display import Display

display = Display()


class NoTokenSentinel(object):
    """ Represents an ansible.cfg server with not token defined (will ignore cmdline and GALAXY_TOKEN_PATH. """
    def __new__(cls, *args, **kwargs):
        return cls


class KeycloakToken(object):
    '''A token granted by a Keycloak server.

    Like sso.redhat.com as used by cloud.redhat.com
    ie Automation Hub'''

    token_type = 'Bearer'

    def __init__(self, access_token=None, auth_url=None, validate_certs=True, client_id=None):
        self.access_token = access_token
        self.auth_url = auth_url
        self._token = None
        self.validate_certs = validate_certs
        self.client_id = client_id
        if self.client_id is None:
            self.client_id = 'cloud-services'

    def _form_payload(self):
        return 'grant_type=refresh_token&client_id=%s&refresh_token=%s' % (self.client_id,
                                                                           self.access_token)

    def get(self):
        if self._token:
            return self._token

        # - build a request to POST to auth_url
        #  - body is form encoded
        #    - 'refresh_token' is the offline token stored in ansible.cfg
        #    - 'grant_type' is 'refresh_token'
        #    - 'client_id' is 'cloud-services'
        #       - should probably be based on the contents of the
        #         offline_ticket's JWT payload 'aud' (audience)
        #         or 'azp' (Authorized party - the party to which the ID Token was issued)
        payload = self._form_payload()

        resp = open_url(to_native(self.auth_url),
                        data=payload,
                        validate_certs=self.validate_certs,
                        method='POST',
                        http_agent=user_agent())

        # TODO: handle auth errors

        data = json.loads(to_text(resp.read(), errors='surrogate_or_strict'))

        # - extract 'access_token'
        self._token = data.get('access_token')

        return self._token

    def headers(self):
        headers = {}
        headers['Authorization'] = '%s %s' % (self.token_type, self.get())
        return headers


class GalaxyToken(object):
    ''' Class to storing and retrieving local galaxy token '''

    token_type = 'Token'

    def __init__(self, token=None):
        self.b_file = to_bytes(C.GALAXY_TOKEN_PATH, errors='surrogate_or_strict')
        # Done so the config file is only opened when set/get/save is called
        self._config = None
        self._token = token

    @property
    def config(self):
        if self._config is None:
            self._config = self._read()

        # Prioritise the token passed into the constructor
        if self._token:
            self._config['token'] = None if self._token is NoTokenSentinel else self._token

        return self._config

    def _read(self):
        action = 'Opened'
        if not os.path.isfile(self.b_file):
            # token file not found, create and chmod u+rw
            open(self.b_file, 'w').close()
            os.chmod(self.b_file, S_IRUSR | S_IWUSR)  # owner has +rw
            action = 'Created'

        with open(self.b_file, 'r') as f:
            config = yaml_load(f)

        display.vvv('%s %s' % (action, to_text(self.b_file)))

        if config and not isinstance(config, dict):
            display.vvv('Galaxy token file %s malformed, unable to read it' % to_text(self.b_file))
            return {}

        return config or {}

    def set(self, token):
        self._token = token
        self.save()

    def get(self):
        return self.config.get('token', None)

    def save(self):
        with open(self.b_file, 'w') as f:
            yaml_dump(self.config, f, default_flow_style=False)

    def headers(self):
        headers = {}
        token = self.get()
        if token:
            headers['Authorization'] = '%s %s' % (self.token_type, self.get())
        return headers


class BasicAuthToken(object):
    token_type = 'Basic'

    def __init__(self, username, password=None):
        self.username = username
        self.password = password
        self._token = None

    @staticmethod
    def _encode_token(username, password):
        token = "%s:%s" % (to_text(username, errors='surrogate_or_strict'),
                           to_text(password, errors='surrogate_or_strict', nonstring='passthru') or '')
        b64_val = base64.b64encode(to_bytes(token, encoding='utf-8', errors='surrogate_or_strict'))
        return to_text(b64_val)

    def get(self):
        if self._token:
            return self._token

        self._token = self._encode_token(self.username, self.password)

        return self._token

    def headers(self):
        headers = {}
        headers['Authorization'] = '%s %s' % (self.token_type, self.get())
        return headers