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# -*- coding: utf-8 -*-
# _web.py
# Copyright (C) 2016 LEAP Encryption Access 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/>.
"""
HTTP REST Dispatcher Service.
"""
import json
import os
import pkg_resources
from twisted.internet import reactor
from twisted.application import service
from twisted.internet import endpoints
from twisted.web.resource import Resource
from twisted.web.server import Site, NOT_DONE_YET
from twisted.web.static import File
from twisted.logger import Logger
from leap.bitmask.core.dispatcher import CommandDispatcher
try:
import leap.bitmask_js
HAS_WEB_UI = True
except ImportError:
HAS_WEB_UI = False
try:
import txtorcon
except Exception:
pass
log = Logger()
class HTTPDispatcherService(service.Service):
"""
A Dispatcher for BitmaskCore exposing a REST API.
If the leap.bitmask_js package is available in the search path, it will
serve the UI under this same service too.
"""
def __init__(self, core, port=7070, debug=False, onion=False):
self._core = core
self.port = port
self.debug = debug
self.onion = onion
self.uri = ''
def startService(self):
if HAS_WEB_UI:
webdir = os.path.abspath(
pkg_resources.resource_filename('leap.bitmask_js', 'public'))
log.debug('webdir: %s' % webdir)
else:
log.warn('bitmask_js not found, serving bitmask.core ui')
webdir = os.path.abspath(
pkg_resources.resource_filename('leap.bitmask.core', 'web'))
root = File(webdir)
api = Api(CommandDispatcher(self._core))
root.putChild(u'API', api)
factory = Site(root)
self.site = factory
if self.onion:
try:
import txtorcon
except ImportError:
log.error('onion is enabled, but could not find txtorcon')
return
self._start_onion_service(factory)
else:
interface = '127.0.0.1'
endpoint = endpoints.TCP4ServerEndpoint(
reactor, self.port, interface=interface)
self.uri = 'https://%s:%s' % (interface, self.port)
endpoint.listen(factory)
# TODO this should be set in a callback to the listen call
self.running = True
def _start_onion_service(self, factory):
def progress(percent, tag, message):
bar = int(percent / 10)
log.debug('[%s%s] %s' % ('#' * bar, '.' * (10 - bar), message))
def setup_complete(port):
port = txtorcon.IHiddenService(port)
self.uri = "http://%s" % (port.getHost().onion_uri)
log.info('I have set up a hidden service, advertised at: %s'
% self.uri)
log.info('locally listening on %s' % port.local_address.getHost())
def setup_failed(args):
log.error('onion service setup FAILED: %r' % args)
endpoint = endpoints.serverFromString(reactor, 'onion:80')
txtorcon.IProgressProvider(endpoint).add_progress_listener(progress)
d = endpoint.listen(factory)
d.addCallback(setup_complete)
d.addErrback(setup_failed)
return d
def stopService(self):
self.site.stopFactory()
self.listener.stopListening()
self.running = False
def do_status(self):
status = 'running' if self.running else 'disabled'
return {'web': status, 'uri': self.uri}
class Api(Resource):
isLeaf = True
def __init__(self, dispatcher):
Resource.__init__(self)
self.dispatcher = dispatcher
def render_POST(self, request):
command = request.uri.split('/')[2:]
params = request.content.getvalue()
if params:
# json.loads returns unicode strings and the rest of the code
# expects strings. This 'str(param)' conversion can be removed
# if we move to python3
for param in json.loads(params):
command.append(str(param))
d = self.dispatcher.dispatch(command)
d.addCallback(self._write_response, request)
return NOT_DONE_YET
def _write_response(self, response, request):
request.setHeader('Content-Type', 'application/json')
request.write(response)
request.finish()
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