# -*- coding: utf-8 -*-
# mail_services.py
# Copyright (C) 2016 LEAP Encryption Acess Project
#
# 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/>.
"""
Mail services.
This is quite moving work still.
This should be moved to the different submodules when it stabilizes.
"""
import json
import os
import shutil
import tempfile
from collections import defaultdict
from collections import namedtuple
from twisted.application import service
from twisted.internet import defer
from twisted.logger import Logger
from leap.common.events import catalog, emit_async
from leap.common.files import check_and_fix_urw_only
from leap.bitmask.bonafide import config
from leap.bitmask.hooks import HookableService
from leap.bitmask.util import get_gpg_bin_path, merge_status
try:
from leap.bitmask.keymanager import KeyManager
from leap.bitmask.keymanager.errors import KeyNotFound
from leap.bitmask.keymanager.validation import ValidationLevels
from leap.bitmask.mail.constants import INBOX_NAME
from leap.bitmask.mail.mail import Account
from leap.bitmask.mail.imap import service as imap_service
from leap.bitmask.mail.smtp import service as smtp_service
from leap.bitmask.mail.incoming.service import IncomingMail
from leap.bitmask.mail.incoming.service import INCOMING_CHECK_PERIOD
from leap.soledad.client.api import Soledad
HAS_MAIL = True
except ImportError:
HAS_MAIL = False
try:
from leap.bitmask.mua import pixelizer
HAS_MUA = True
except ImportError:
HAS_MUA = False
from leap.bitmask.core.uuid_map import UserMap
from leap.bitmask.core.configurable import DEFAULT_BASEDIR
class Container(object):
def __init__(self, service=None):
self._instances = defaultdict(None)
if service is not None:
self.service = service
def get_instance(self, key):
return self._instances.get(key, None)
def add_instance(self, key, data):
self._instances[key] = data
class ImproperlyConfigured(Exception):
pass
class SoledadContainer(Container):
log = Logger()
def __init__(self, service=None, basedir=DEFAULT_BASEDIR):
self._basedir = os.path.expanduser(basedir)
self._usermap = UserMap()
super(SoledadContainer, self).__init__(service=service)
def add_instance(self, userid, passphrase, uuid=None, token=None):
if not uuid:
bootstrapped_uuid = self._usermap.lookup_uuid(userid, passphrase)
uuid = bootstrapped_uuid
if not uuid:
return
else:
self._usermap.add(userid, uuid, passphrase)
user, provider = userid.split('@')
soledad_path = os.path.join(self._basedir, 'soledad')
soledad_url = _get_soledad_uri(self._basedir, provider)
cert_path = _get_ca_cert_path(self._basedir, provider)
soledad = self._create_soledad_instance(
uuid, passphrase, soledad_path, soledad_url,
cert_path, token)
super(SoledadContainer, self).add_instance(userid, soledad)
data = {'user': userid, 'uuid': uuid, 'token': token,
'soledad': soledad}
self.service.trigger_hook('on_new_soledad_instance', **data)
self.log.debug('Syncing soledad for the first time...')
d = soledad.sync()
d.addCallbacks(
lambda _:
self.service.trigger_hook('on_soledad_first_sync', **data),
lambda _:
self.log.failure('Something failed on soledad first sync'))
def _create_soledad_instance(self, uuid, passphrase, soledad_path,
server_url, cert_file, token):
# setup soledad info
secrets_path = os.path.join(soledad_path, '%s.secret' % uuid)
local_db_path = os.path.join(soledad_path, '%s.db' % uuid)
return Soledad(
uuid,
unicode(passphrase),
secrets_path=secrets_path,
local_db_path=local_db_path,
server_url=server_url,
cert_file=cert_file,
auth_token=token)
def set_remote_auth_token(self, userid, token):
self.get_instance(userid).token = token
def sync(self, userid):
self.get_instance(userid).sync()
def _get_provider_from_full_userid(userid):
_, provider_id = config.get_username_and_provider(userid)
# TODO -- this autoconf should be passed from the
# command flag. workaround to get cli workinf for now.
return config.Provider.get(provider_id, autoconf=True)
def is_service_ready(service, provider):
"""
Returns True when the following conditions are met:
- Provider offers that service.
- We have the config files for the service.
- The service is enabled.
"""
has_service = provider.offers_service(service)
has_config = provider.has_config_for_service(service)
is_enabled = provider.is_service_enabled(service)
return has_service and has_config and is_enabled
class SoledadService(HookableService):
log = Logger()
def __init__(self, basedir):
service.Service.__init__(self)
self._basedir = basedir
def startService(self):
self.log.info('Starting Soledad Service')
self._container = SoledadContainer(service=self)
super(SoledadService, self).startService()
# hooks
def hook_on_passphrase_entry(self, **kw):
userid = kw.get('username')
provider = _get_provider_from_full_userid(userid)
provider.callWhenReady(self._hook_on_passphrase_entry, provider, **kw)
def _hook_on_passphrase_entry(self, provider, **kw):
if is_service_ready('mx', provider):
userid = kw.get('username')
password = kw.get('password')
uuid = kw.get('uuid')
container = self._container
self.log.debug('On_passphrase_entry: '
'New Soledad Instance: %s' % userid)
if not container.get_instance(userid):
container.add_instance(userid, password, uuid=uuid, token=None)
else:
self.log.debug('Service MX is not ready...')
def hook_on_bonafide_auth(self, **kw):
userid = kw['username']
provider = _get_provider_from_full_userid(userid)
provider.callWhenReady(self._hook_on_bonafide_auth, provider, **kw)
def _hook_on_bonafide_auth(self, provider, **kw):
if provider.offers_service('mx'):
userid = kw['username']
password = kw['password']
token = kw['token']
uuid = kw['uuid']
container = self._container
if container.get_instance(userid):
self.log.debug(
'Passing a new SRP Token to Soledad: %s' % userid)
container.set_remote_auth_token(userid, token)
else:
self.log.debug(
'Adding a new Soledad Instance: %s' % userid)
container.add_instance(
userid, password, uuid=uuid, token=token)
def hook_on_passphrase_change(self, **kw):
# TODO: if bitmask stops before this hook being executed bonafide and
# soledad will end up with different passwords
# https://leap.se/code/issues/8489
userid = kw['username']
password = kw['password']
soledad = self._container.get_instance(userid)
if soledad is not None:
self.log.info('Change soledad passphrase for %s' % userid)
soledad.change_passphrase(unicode(password))
class KeymanagerContainer(Container):
log = Logger()
def __init__(self, service=None, basedir=DEFAULT_BASEDIR):
self._basedir = os.path.expanduser(basedir)
self._status = {}
super(KeymanagerContainer, self).__init__(service=service)
def add_instance(self, userid, token, uuid, soledad):
self.log.debug('Adding Keymanager instance for: %s' % userid)
self._set_status(userid, "starting")
keymanager = self._create_keymanager_instance(
userid, token, uuid, soledad)
super(KeymanagerContainer, self).add_instance(userid, keymanager)
def set_remote_auth_token(self, userid, token):
self.get_instance(userid).token = token
def status(self, userid):
if userid not in self._status:
return {'status': 'off', 'error': None, 'keys': None}
return self._status[userid]
def get_or_generate_keys(self, userid):
keymanager = self.get_instance(userid)
def _found_key(key):
self.log.info('Found key: %r' % key)
self._set_status(userid, "on", keys="found")
return key
def key_generated_cb(passthru):
self._set_status(userid, "on", keys="found")
return passthru
def _if_not_found_generate(failure):
failure.trap(KeyNotFound)
self.log.info('Key not found, generating key for %s' % (userid,))
self._set_status(userid, "starting", keys="generating")
d = keymanager.gen_key()
d.addCallback(key_generated_cb)
d.addErrback(_log_key_error)
return d
def _log_key_error(failure):
self.log.failure('Error while generating key!')
error = "Error generating key: %s" % failure.getErrorMessage()
self._set_status(userid, "failed", error=error)
return failure
self.log.info('Looking up private key for %s' % userid)
d = keymanager.get_key(userid, private=True, fetch_remote=False)
d.addCallbacks(_found_key, _if_not_found_generate)
d.addCallback(self._on_keymanager_ready_cb, keymanager, userid)
return d
@defer.inlineCallbacks
def send_if_outdated_key_in_nicknym(self, userid):
keymanager = self.get_instance(userid)
key = yield keymanager.get_key(userid, fetch_remote=False)
try:
remote = yield keymanager._nicknym.fetch_key_with_address(userid)
except Exception:
remote = ""
if key.key_data != remote:
yield keymanager.send_key()
def _set_status(self, address, status, error=None, keys=None):
self._status[address] = {"status": status,
"error": error, "keys": keys}
emit_async(catalog.MAIL_STATUS_CHANGED, address)
def _on_keymanager_ready_cb(self, key, keymanager, userid):
soledad = keymanager._soledad
data = {'userid': userid, 'soledad': soledad, 'keymanager': keymanager}
self.service.trigger_hook('on_new_keymanager_instance', **data)
return key
def _create_keymanager_instance(self, userid, token, uuid, soledad):
user, provider = userid.split('@')
nickserver_uri = self._get_nicknym_uri(provider)
cert_path = _get_ca_cert_path(self._basedir, provider)
api_uri = self._get_api_uri(provider)
if not token:
token = self.service.tokens.get(userid)
km_args = (userid, nickserver_uri, soledad)
km_kwargs = {
"token": token, "uid": uuid,
"api_uri": api_uri, "api_version": "1",
"ca_cert_path": cert_path,
"gpgbinary": get_gpg_bin_path()
}
keymanager = KeyManager(*km_args, **km_kwargs)
return keymanager
def _get_api_uri(self, provider):
api_uri = config.Provider.get(provider).api_uri
return api_uri
def _get_nicknym_uri(self, provider):
return 'https://nicknym.{provider}:6425'.format(
provider=provider)
class KeymanagerService(HookableService):
log = Logger()
def __init__(self, basedir=DEFAULT_BASEDIR):
service.Service.__init__(self)
self._basedir = basedir
self._container = None
def startService(self):
self.log.debug('Starting Keymanager Service')
self._container = KeymanagerContainer(self._basedir)
self._container.service = self
self.tokens = {}
super(KeymanagerService, self).startService()
# hooks
def hook_on_new_soledad_instance(self, **kw):
container = self._container
user = kw['user']
token = kw['token']
uuid = kw['uuid']
soledad = kw['soledad']
if not container.get_instance(user):
self.log.debug('Adding a new Keymanager instance for %s' % user)
if not token:
token = self.tokens.get(user)
container.add_instance(user, token, uuid, soledad)
def hook_on_soledad_first_sync(self, **kw):
userid = kw['user']
d = self._container.get_or_generate_keys(userid)
d.addCallback(
lambda _: self._container.send_if_outdated_key_in_nicknym(userid))
def hook_on_bonafide_auth(self, **kw):
userid = kw['username']
provider = _get_provider_from_full_userid(userid)
provider.callWhenReady(self._hook_on_bonafide_auth, provider, **kw)
def _hook_on_bonafide_auth(self, provider, **kw):
if provider.offers_service('mx'):
userid = kw['username']
token = kw['token']
container = self._container
if container.get_instance(userid):
self.log.debug(
'Passing a new SRP Token '
'to Keymanager: %s' % userid)
container.set_remote_auth_token(userid, token)
else:
self.log.debug('Storing the keymanager token... %s ' % token)
self.tokens[userid] = token
# commands
def do_list_keys(self, userid, private=False):
km = self._container.get_instance(userid)
if km is None:
return defer.fail(ValueError("User " + userid + " has no active "
"keymanager"))
d = km.get_all_keys(private=private)
d.addCallback(lambda keys: [dict(key) for key in keys])
return d
def do_export(self, userid, address, private=False, fetch_remote=False):
km = self._container.get_instance(userid)
if km is None:
return defer.fail(ValueError("User " + userid + " has no active "
"keymanager"))
d = km.get_key(address, private=private, fetch_remote=fetch_remote)
d.addCallback(lambda key: dict(key))
return d
def do_fetch(self, userid, address, fingerprint):
km = self._container.get_instance(userid)
if km is None:
return defer.fail(ValueError("User " + userid + " has no active "
"keymanager"))
d = km.fetch_key_fingerprint(address, fingerprint)
d.addCallback(lambda key: dict(key))
return d
def do_insert(self, userid, address, rawkey, validation='Fingerprint'):
km = self._container.get_instance(userid)
if km is None:
return defer.fail(ValueError("User " + userid + " has no active "
"keymanager"))
validation = ValidationLevels.get(validation)
d = km.put_raw_key(rawkey, address, validation=validation)
d.addCallback(lambda _: km.get_key(address, fetch_remote=False))
d.addCallback(lambda key: dict(key))
return d
@defer.inlineCallbacks
def do_delete(self, userid, address, private=False):
km = self._container.get_instance(userid)
if km is None:
raise ValueError("User " + userid + " has no active keymanager")
key = yield km.get_key(address, private=private, fetch_remote=False)
km.delete_key(key)
defer.returnValue(key.fingerprint)
def status(self, userid):
return self._container.status(userid)
class StandardMailService(service.MultiService, HookableService):
"""
A collection of Services.
This is the parent service, that launches 3 different services that expose
Encrypted Mail Capabilities on specific ports:
- SMTP service, on port 2013
- IMAP service, on port 1984
- The IncomingMail Service, which doesn't listen on any port, but
watches and processes the Incoming Queue and saves the processed mail
into the matching INBOX.
"""
name = 'mail'
log = Logger()
# TODO factor out Mail Service to inside mail package.
def __init__(self, basedir, mixnet_enabled=False):
self._basedir = basedir
self._soledad_sessions = {}
self._keymanager_sessions = {}
self._sendmail_opts = {}
self._service_tokens = {}
self._mixnet_enabled = mixnet_enabled
super(StandardMailService, self).__init__()
self.initializeChildrenServices()
def initializeChildrenServices(self):
self.addService(IMAPService(self._soledad_sessions))
self.addService(SMTPService(
self._soledad_sessions, self._keymanager_sessions,
self._sendmail_opts))
# TODO adapt the service to receive soledad/keymanager sessions object.
# See also the TODO before IncomingMailService.startInstance
self.addService(IncomingMailService(self))
def startService(self):
self.log.info('Starting Mail Service')
super(StandardMailService, self).startService()
def stopService(self):
self.log.info('Stopping Mail service')
super(StandardMailService, self).stopService()
def startInstance(self, userid, soledad, keymanager):
username, provider = userid.split('@')
self._soledad_sessions[userid] = soledad
self._keymanager_sessions[userid] = keymanager
sendmail_opts = _get_sendmail_opts(self._basedir, provider, username)
self._sendmail_opts[userid] = sendmail_opts
def registerToken(token):
self._service_tokens[userid] = token
return token
incoming = self.getServiceNamed('incoming_mail')
d = incoming.startInstance(userid)
d.addCallback(
lambda _: soledad.get_or_create_service_token('mail_auth'))
d.addCallback(registerToken)
d.addCallback(self._write_tokens_file, userid)
d.addCallback(
self._maybe_start_pixelated, userid, soledad, keymanager)
return d
# hooks
def hook_on_new_keymanager_instance(self, **kw):
# XXX we can specify this as a waterfall, or just AND the two
# conditions.
userid = kw['userid']
soledad = kw['soledad']
keymanager = kw['keymanager']
# TODO --- only start instance if "autostart" is True.
self.startInstance(userid, soledad, keymanager)
@defer.inlineCallbacks
def hook_on_bonafide_auth(self, **kw):
userid = kw['username']
self._maybe_start_incoming_service(userid)
# TODO: if it's expired we should renew it
yield self._maybe_fetch_smtp_certificate(userid)
def _maybe_start_incoming_service(self, userid):
"""
try to turn on incoming mail service for the user that just logged in
"""
self.log.debug(
'Looking for incoming mail service for auth: %s' % userid)
multiservice = self.getServiceNamed('incoming_mail')
try:
incoming = multiservice.getServiceNamed(userid)
incoming.startService()
except KeyError:
self.log.debug('No incoming service for %s' % userid)
@defer.inlineCallbacks
def _maybe_fetch_smtp_certificate(self, userid):
# check if smtp cert exists
username, provider = userid.split('@')
cert_path = _get_smtp_client_cert_path(self._basedir, provider,
username)
if os.path.exists(cert_path):
defer.returnValue(None)
# fetch smtp cert and store
bonafide = self.parent.getServiceNamed("bonafide")
_, cert_str = yield bonafide.do_get_smtp_cert(userid)
cert_dir = os.path.dirname(cert_path)
if not os.path.exists(cert_dir):
os.makedirs(cert_dir, mode=0700)
with open(cert_path, 'w') as outf:
outf.write(cert_str)
check_and_fix_urw_only(cert_path)
def hook_on_bonafide_logout(self, **kw):
username = kw.get('username', None)
if username:
multiservice = self.getServiceNamed('incoming_mail')
try:
incoming = multiservice.getServiceNamed(username)
except KeyError:
incoming = None
if incoming:
self.log.debug(
'looking for incoming mail service '
'for logout: %s' % username)
incoming.stopService()
# commands
@defer.inlineCallbacks
def do_status(self, userid):
smtp = self.getServiceNamed('smtp')
imap = self.getServiceNamed('imap')
keymanager = self.parent.getServiceNamed('keymanager')
incoming = self.getServiceNamed('incoming_mail')
incoming_status = yield incoming.status(userid)
childrenStatus = {
'smtp': smtp.status(),
'imap': imap.status(),
'keymanager': keymanager.status(userid),
'incoming': incoming_status
}
defer.returnValue(merge_status(childrenStatus))
def do_mixnet_status(self, userid, address):
# XXX: for now there is no support in the provider
# we'll mock it if it's enabled
provider = address.split('@')[1]
if not self._mixnet_enabled:
status = 'disabled'
elif provider in ['panoramix-project.eu', 'riseup.net']:
status = 'ok'
else:
status = 'unsuported'
return {'status': status}
def get_token(self, userid):
token = self._service_tokens.get(userid)
return {'user': userid, 'token': token}
def do_add_msg(self, userid, raw_msg, mailbox=None):
if not mailbox:
mailbox = INBOX_NAME
account = self._get_account(userid)
d = account.get_collection_by_mailbox(mailbox)
d.addCallback(lambda collection: collection.add_msg(raw_msg))
d.addCallback(lambda _: {'added': True})
return d
# access to containers
def get_soledad_session(self, userid):
return self._soledad_sessions.get(userid)
def get_keymanager_session(self, userid):
return self._keymanager_sessions.get(userid)
# other helpers
def _write_tokens_file(self, token, userid):
tokens_folder = os.path.join(tempfile.gettempdir(), "bitmask_tokens")
if os.path.exists(tokens_folder):
try:
shutil.rmtree(tokens_folder)
except OSError as e:
self.log.warn("Can't remove tokens folder %s: %s"
% (tokens_folder, e))
return
os.mkdir(tokens_folder, 0700)
tokens_path = os.path.join(tokens_folder,
"%s.json" % (userid,))
token_dict = {'mail_auth': self._service_tokens[userid]}
with open(tokens_path, 'w') as ftokens:
json.dump(token_dict, ftokens)
def _maybe_start_pixelated(self, passthrough, userid, soledad, keymanager):
account = self._get_account(userid)
if HAS_MUA and pixelizer.HAS_PIXELATED:
pixelizer.start_pixelated_user_agent(
userid, soledad, keymanager, account)
return passthrough
def _get_account(self, userid):
incoming = self.getServiceNamed('incoming_mail')
return incoming.getServiceNamed(userid).account
class IMAPService(service.Service):
name = 'imap'
log = Logger()
def __init__(self, soledad_sessions):
self._soledad_sessions = soledad_sessions
self._port = None
self._factory = None
super(IMAPService, self).__init__()
def startService(self):
if not HAS_MAIL:
self.log.info('Mail module not found')
return
self.log.info('Starting IMAP Service')
port, factory = imap_service.run_service(
self._soledad_sessions, factory=self._factory)
self._port = port
self._factory = factory
super(IMAPService, self).startService()
def stopService(self):
self.log.info('Stopping IMAP Service')
if self._port:
self._port.stopListening()
self._port = None
if self._factory:
self._factory.doStop()
super(IMAPService, self).stopService()
def status(self):
return {
'status': 'on' if self.running else 'off',
'error': None
}
class SMTPService(service.Service):
name = 'smtp'
log = Logger()
def __init__(self, soledad_sessions, keymanager_sessions, sendmail_opts,
basedir=DEFAULT_BASEDIR):
self._basedir = os.path.expanduser(basedir)
self._soledad_sessions = soledad_sessions
self._keymanager_sessions = keymanager_sessions
self._sendmail_opts = sendmail_opts
self._port = None
self._factory = None
super(SMTPService, self).__init__()
def startService(self):
if not HAS_MAIL:
self.log.info('Mail module not found')
return
self.log.info('starting smtp service')
port, factory = smtp_service.run_service(
self._soledad_sessions,
self._keymanager_sessions,
self._sendmail_opts,
factory=self._factory)
self._port = port
self._factory = factory
super(SMTPService, self).startService()
def stopService(self):
self.log.info('Stopping SMTP Service')
if self._port:
self._port.stopListening()
self._port = None
if self._factory:
self._factory.doStop()
super(SMTPService, self).stopService()
def status(self):
return {
'status': 'on' if self.running else 'off',
'error': None
}
class IncomingMailService(service.MultiService):
"""
Manage child services that check for incoming mail for individual users.
"""
name = 'incoming_mail'
log = Logger()
def __init__(self, mail_service):
super(IncomingMailService, self).__init__()
self._mail = mail_service
self._status = {}
def startService(self):
self.log.info('Starting Incoming Mail Service')
super(IncomingMailService, self).startService()
def stopService(self):
super(IncomingMailService, self).stopService()
# Individual accounts
def startInstance(self, userid):
"""returns: a deferred"""
self._set_status(userid, "starting")
soledad = self._mail.get_soledad_session(userid)
keymanager = self._mail.get_keymanager_session(userid)
self.log.info('Setting up Incoming Mail Service for %s' % userid)
return self._start_incoming_mail_instance(
keymanager, soledad, userid)
@defer.inlineCallbacks
def status(self, userid):
if userid not in self._status:
defer.returnValue({'status': 'off', 'error': None, 'unread': None})
status = self._status[userid]
incoming = self.getServiceNamed(userid)
if status['status'] == 'on':
status['unread'] = yield incoming.unread()
defer.returnValue(status)
def _set_status(self, address, status, error=None, unread=None):
self._status[address] = {"status": status, "error": error,
"unread": unread}
emit_async(catalog.MAIL_STATUS_CHANGED, address)
def _start_incoming_mail_instance(self, keymanager, soledad,
userid, start_sync=True):
def setUpIncomingMail(inbox, acc):
incoming_mail = IncomingMail(
keymanager, soledad,
inbox, userid,
check_period=INCOMING_CHECK_PERIOD)
incoming_mail.account = acc
self.log.debug('Setting Incoming Mail Service for %s' % userid)
incoming_mail.setName(userid)
self.addService(incoming_mail)
def setStatusOn(res):
self._set_status(userid, "on")
return res
# XXX ----------------------------------------------------------------
# TODO we probably want to enforce a SINGLE ACCOUNT INSTANCE
# earlier in the bootstrap process (ie, upper in the hierarchy of
# services) so that the single instance can be shared by the imap and
# the pixelated mua.
# XXX ----------------------------------------------------------------
acc = Account(soledad, userid)
d = acc.callWhenReady(
lambda _: acc.get_collection_by_mailbox(INBOX_NAME))
d.addCallback(setUpIncomingMail, acc)
d.addCallback(setStatusOn)
d.addErrback(self._errback, userid)
return d
def _errback(self, failure, userid):
self._set_status(userid, "failed", error=str(failure))
self.log.failure('failed!')
# --------------------------------------------------------------------
#
# config utilities. should be moved to bonafide
#
SERVICES = ('soledad', 'smtp', 'vpn')
Provider = namedtuple(
'Provider', ['hostname', 'ip_address', 'location', 'port'])
SendmailOpts = namedtuple(
'SendmailOpts', ['cert', 'key', 'hostname', 'port'])
def _get_ca_cert_path(basedir, provider):
path = os.path.join(
basedir, 'providers', provider, 'keys', 'ca', 'cacert.pem')
return path
def _get_sendmail_opts(basedir, provider, username):
cert = _get_smtp_client_cert_path(basedir, provider, username)
key = cert
prov = _get_provider_for_service('smtp', basedir, provider)
hostname = prov.hostname
port = prov.port
opts = SendmailOpts(cert, key, hostname, port)
return opts
def _get_smtp_client_cert_path(basedir, provider, username):
path = os.path.join(
basedir, 'providers', provider, 'keys', 'client', 'smtp_%s.pem' %
username)
return path
def _get_config_for_service(service, basedir, provider):
if service not in SERVICES:
raise ImproperlyConfigured('Tried to use an unknown service')
config_path = os.path.join(
basedir, 'providers', provider, '%s-service.json' % service)
try:
with open(config_path) as config:
config = json.loads(config.read())
except IOError:
# FIXME might be that the provider DOES NOT offer this service!
raise ImproperlyConfigured(
'could not open config file %s' % config_path)
else:
return config
def first(xs):
return xs[0]
def _pick_server(config, strategy=first):
"""
Picks a server from a list of possible choices.
The service files have a <describe>.
This implementation just picks the FIRST available server.
"""
servers = config['hosts'].keys()
choice = config['hosts'][strategy(servers)]
return choice
def _get_subdict(d, keys):
return {key: d.get(key) for key in keys}
def _get_provider_for_service(service, basedir, provider):
if service not in SERVICES:
raise ImproperlyConfigured('Tried to use an unknown service')
config = _get_config_for_service(service, basedir, provider)
p = _pick_server(config)
attrs = _get_subdict(p, ('hostname', 'ip_address', 'location', 'port'))
provider = Provider(**attrs)
return provider
def _get_smtp_uri(basedir, provider):
prov = _get_provider_for_service('smtp', basedir, provider)
url = 'https://{hostname}:{port}'.format(
hostname=prov.hostname, port=prov.port)
return url
def _get_soledad_uri(basedir, provider):
prov = _get_provider_for_service('soledad', basedir, provider)
url = 'https://{hostname}:{port}'.format(
hostname=prov.hostname, port=prov.port)
return url