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#
# Copyright (c) 2016 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 logging
import os
from twisted.cred import credentials
from twisted.internet import defer
from twisted.web import util
from twisted.web.http import UNAUTHORIZED, OK
from twisted.web.resource import IResource, NoResource
from twisted.web.server import NOT_DONE_YET
from twisted.web.static import File
from twisted.web.template import Element, XMLFile, renderElement, renderer, tags
from twisted.python.filepath import FilePath
from pixelated.resources import BaseResource, UnAuthorizedResource
log = logging.getLogger(__name__)
def _get_startup_folder():
path = os.path.dirname(os.path.abspath(__file__))
return os.path.join(path, '..', 'assets')
def _get_static_folder():
static_folder = os.path.abspath(os.path.join(os.path.abspath(__file__), "..", "..", "..", "web-ui", "app"))
# this is a workaround for packaging
if not os.path.exists(static_folder):
static_folder = os.path.abspath(
os.path.join(os.path.abspath(__file__), "..", "..", "..", "..", "web-ui", "app"))
if not os.path.exists(static_folder):
static_folder = os.path.join('/', 'usr', 'share', 'pixelated-user-agent')
return static_folder
class LoginWebSite(Element):
loader = XMLFile(FilePath(os.path.join(_get_startup_folder(), 'login.html')))
def __init__(self, error_msg=None):
super(LoginWebSite, self).__init__()
self._error_msg = error_msg
@renderer
def error_msg(self, request, tag):
if self._error_msg is not None:
return tag(self._error_msg)
else:
return tag('')
class LoginResource(BaseResource):
BASE_URL = 'login'
def __init__(self, services_factory, portal=None):
BaseResource.__init__(self, services_factory)
self._static_folder = _get_static_folder()
self._startup_folder = _get_startup_folder()
self._html_template = open(os.path.join(self._startup_folder, 'login.html')).read()
self._portal = portal
self.putChild('startup-assets', File(self._startup_folder))
def set_portal(self, portal):
self._portal = portal
def getChild(self, path, request):
if path == '':
return self
if path == 'login':
return self
if not self.is_logged_in(request):
return UnAuthorizedResource()
return NoResource()
def render_GET(self, request):
request.setResponseCode(OK)
return self._render_template(request)
def _render_template(self, request, error_msg=None):
site = LoginWebSite(error_msg=error_msg)
return renderElement(request, site)
def render_POST(self, request):
def render_response(response):
util.redirectTo("/", request)
request.finish()
def render_error(error):
log.info('Login Error for %s' % request.args['username'][0])
log.info('%s' % error)
request.setResponseCode(UNAUTHORIZED)
return self._render_template(request, 'Invalid credentials')
d = self._handle_login(request)
d.addCallbacks(render_response, render_error)
return NOT_DONE_YET
@defer.inlineCallbacks
def _handle_login(self, request):
if self.is_logged_in(request):
request.setResponseCode(OK)
defer.succeed(None)
return
username = request.args['username'][0]
password = request.args['password'][0]
creds = credentials.UsernamePassword(username, password)
iface, leap_user, logout = yield self._portal.login(creds, None, IResource)
yield leap_user.start_services(self._services_factory)
leap_user.init_http_session(request)
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