summaryrefslogtreecommitdiff
path: root/src/leap/bitmask/services/soledad/soledadbootstrapper.py
blob: 9e1502265d42c662195f9fcd2a9259efd0faf07a (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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
# -*- coding: utf-8 -*-
# soledadbootstrapper.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/>.

"""
Soledad bootstrapping
"""

import logging
import os
import socket

from PySide import QtCore
from u1db import errors as u1db_errors

from leap.bitmask.config.providerconfig import ProviderConfig
from leap.bitmask.crypto.srpauth import SRPAuth
from leap.bitmask.services.abstractbootstrapper import AbstractBootstrapper
from leap.bitmask.services.soledad.soledadconfig import SoledadConfig
from leap.bitmask.util.request_helpers import get_content
from leap.common.check import leap_assert, leap_assert_type
from leap.common.files import get_mtime
from leap.keymanager import KeyManager, openpgp
from leap.keymanager.errors import KeyNotFound
from leap.soledad import Soledad

logger = logging.getLogger(__name__)


class SoledadBootstrapper(AbstractBootstrapper):
    """
    Soledad init procedure
    """

    SOLEDAD_KEY = "soledad"
    KEYMANAGER_KEY = "keymanager"

    PUBKEY_KEY = "user[public_key]"

    MAX_INIT_RETRIES = 10

    # All dicts returned are of the form
    # {"passed": bool, "error": str}
    download_config = QtCore.Signal(dict)
    gen_key = QtCore.Signal(dict)
    soledad_timeout = QtCore.Signal()
    soledad_failed = QtCore.Signal()

    def __init__(self):
        AbstractBootstrapper.__init__(self)

        self._provider_config = None
        self._soledad_config = None
        self._keymanager = None
        self._download_if_needed = False
        self._user = ""
        self._password = ""
        self._srpauth = None
        self._soledad = None

        self._soledad_retries = 0

    @property
    def keymanager(self):
        return self._keymanager

    @property
    def soledad(self):
        return self._soledad

    @property
    def srpauth(self):
        leap_assert(self._provider_config is not None,
                    "We need a provider config")
        return SRPAuth(self._provider_config)

    # retries

    def should_retry_initialization(self):
        """
        Returns True if we should retry the initialization.
        """
        logger.debug("current retries: %s, max retries: %s" % (
            self._soledad_retries,
            self.MAX_INIT_RETRIES))
        return self._soledad_retries < self.MAX_INIT_RETRIES

    def increment_retries_count(self):
        """
        Increments the count of initialization retries.
        """
        self._soledad_retries += 1

    # initialization

    def load_and_sync_soledad(self):
        """
        Once everthing is in the right place, we instantiate and sync
        Soledad

        :param srp_auth: SRPAuth object used
        :type srp_auth: SRPAuth
        """
        srp_auth = self.srpauth
        uuid = srp_auth.get_uid()

        prefix = os.path.join(self._soledad_config.get_path_prefix(),
                              "leap", "soledad")
        secrets_path = "%s/%s.secret" % (prefix, uuid)
        local_db_path = "%s/%s.db" % (prefix, uuid)

        # TODO: Select server based on timezone (issue #3308)
        server_dict = self._soledad_config.get_hosts()

        if server_dict.keys():
            selected_server = server_dict[server_dict.keys()[0]]
            server_url = "https://%s:%s/user-%s" % (
                selected_server["hostname"],
                selected_server["port"],
                uuid)

            logger.debug("Using soledad server url: %s" % (server_url,))

            cert_file = self._provider_config.get_ca_cert_path()

            # TODO: If selected server fails, retry with another host
            # (issue #3309)
            try:
                self._soledad = Soledad(
                    uuid,
                    self._password.encode("utf-8"),
                    secrets_path=secrets_path,
                    local_db_path=local_db_path,
                    server_url=server_url,
                    cert_file=cert_file,
                    auth_token=srp_auth.get_token())
                self._soledad.sync()

            # XXX All these errors should be handled by soledad itself,
            # and return a subclass of SoledadInitializationFailed
            except socket.timeout:
                logger.debug("SOLEDAD TIMED OUT...")
                self.soledad_timeout.emit()
            except socket.error as exc:
                logger.error("Socket error while initializing soledad")
                if exc.errno in (111, ):
                    self.soledad_failed.emit()
            except u1db_errors.Unauthorized:
                logger.error("Error while initializing soledad "
                             "(unauthorized).")
                self.soledad_failed.emit()
            except Exception as exc:
                logger.error("Unhandled error while initializating "
                             "soledad: %r" % (exc,))
                raise
        else:
            raise Exception("No soledad server found")

    def _download_config(self):
        """
        Downloads the Soledad config for the given provider
        """

        leap_assert(self._provider_config,
                    "We need a provider configuration!")

        logger.debug("Downloading Soledad config for %s" %
                     (self._provider_config.get_domain(),))

        self._soledad_config = SoledadConfig()

        headers = {}
        mtime = get_mtime(
            os.path.join(
                self._soledad_config.get_path_prefix(),
                "leap", "providers",
                self._provider_config.get_domain(),
                "soledad-service.json"))

        if self._download_if_needed and mtime:
            headers['if-modified-since'] = mtime

        api_version = self._provider_config.get_api_version()

        # there is some confusion with this uri,
        config_uri = "%s/%s/config/soledad-service.json" % (
            self._provider_config.get_api_uri(),
            api_version)
        logger.debug('Downloading soledad config from: %s' % config_uri)

        # TODO factor out this srpauth protected get (make decorator)
        srp_auth = self.srpauth
        session_id = srp_auth.get_session_id()
        cookies = None
        if session_id:
            cookies = {"_session_id": session_id}

        res = self._session.get(config_uri,
                                verify=self._provider_config
                                .get_ca_cert_path(),
                                headers=headers,
                                cookies=cookies)
        res.raise_for_status()

        self._soledad_config.set_api_version(api_version)

        # Not modified
        if res.status_code == 304:
            logger.debug("Soledad definition has not been modified")
            self._soledad_config.load(
                os.path.join(
                    "leap", "providers",
                    self._provider_config.get_domain(),
                    "soledad-service.json"))
        else:
            soledad_definition, mtime = get_content(res)

            self._soledad_config.load(data=soledad_definition, mtime=mtime)
            self._soledad_config.save(["leap",
                                       "providers",
                                       self._provider_config.get_domain(),
                                       "soledad-service.json"])

        self.load_and_sync_soledad()

    def _gen_key(self, _):
        """
        Generates the key pair if needed, uploads it to the webapp and
        nickserver
        """
        leap_assert(self._provider_config,
                    "We need a provider configuration!")

        address = "%s@%s" % (self._user, self._provider_config.get_domain())

        logger.debug("Retrieving key for %s" % (address,))

        srp_auth = self.srpauth

        # TODO: use which implementation with known paths
        # TODO: Fix for Windows
        gpgbin = "/usr/bin/gpg"

        if self._standalone:
            gpgbin = os.path.join(self._provider_config.get_path_prefix(),
                                  "..", "apps", "mail", "gpg")

        self._keymanager = KeyManager(
            address,
            "https://nicknym.%s:6425" % (self._provider_config.get_domain(),),
            self._soledad,
            #token=srp_auth.get_token(),  # TODO: enable token usage
            session_id=srp_auth.get_session_id(),
            ca_cert_path=self._provider_config.get_ca_cert_path(),
            api_uri=self._provider_config.get_api_uri(),
            api_version=self._provider_config.get_api_version(),
            uid=srp_auth.get_uid(),
            gpgbinary=gpgbin)
        try:
            self._keymanager.get_key(address, openpgp.OpenPGPKey,
                                     private=True, fetch_remote=False)
        except KeyNotFound:
            logger.debug("Key not found. Generating key for %s" % (address,))
            self._keymanager.gen_key(openpgp.OpenPGPKey)
            self._keymanager.send_key(openpgp.OpenPGPKey)
            logger.debug("Key generated successfully.")

    def run_soledad_setup_checks(self,
                                 provider_config,
                                 user,
                                 password,
                                 download_if_needed=False,
                                 standalone=False):
        """
        Starts the checks needed for a new soledad setup

        :param provider_config: Provider configuration
        :type provider_config: ProviderConfig
        :param user: User's login
        :type user: str
        :param password: User's password
        :type password: str
        :param download_if_needed: If True, it will only download
                                   files if the have changed since the
                                   time it was previously downloaded.
        :type download_if_needed: bool
        :param standalone: If True, it'll look for paths inside the
                           bundle (like for gpg)
        :type standalone: bool
        """
        leap_assert_type(provider_config, ProviderConfig)

        # XXX we should provider a method for setting provider_config
        self._provider_config = provider_config
        self._download_if_needed = download_if_needed
        self._user = user
        self._password = password
        self._standalone = standalone

        cb_chain = [
            (self._download_config, self.download_config),
            (self._gen_key, self.gen_key)
        ]

        self.addCallbackChain(cb_chain)