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# Copyright (C) 2018 Philipp Hörist <philipp AT hoerist.com>
#
# This file is part of nbxmpp.
#
# 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/>.
from typing import Dict
from dataclasses import dataclass
from nbxmpp.protocol import Iq
from nbxmpp.simplexml import Node
from nbxmpp.namespaces import Namespace
from nbxmpp.structs import StanzaHandler
from nbxmpp.errors import StanzaError
from nbxmpp.task import iq_request_task
from nbxmpp.modules.base import BaseModule
class SecurityLabels(BaseModule):
def __init__(self, client):
BaseModule.__init__(self, client)
self._client = client
self.handlers = [
StanzaHandler(name='message',
callback=self._process_message_security_label,
ns=Namespace.SECLABEL,
priority=15),
]
def _process_message_security_label(self, _client, stanza, properties):
security = stanza.getTag('securitylabel', namespace=Namespace.SECLABEL)
if security is None:
return
try:
security_label = SecurityLabel.from_node(security)
except ValueError as error:
self._log.warning(error)
return
properties.security_label = security_label
@iq_request_task
def request_catalog(self, jid):
_task = yield
response = yield _make_catalog_request(self._client.domain, jid)
if response.isError():
raise StanzaError(response)
catalog_node = response.getTag('catalog',
namespace=Namespace.SECLABEL_CATALOG)
to = catalog_node.getAttr('to')
items = catalog_node.getTags('item')
labels = {}
default = None
for item in items:
label = item.getAttr('selector')
if label is None:
continue
security = item.getTag('securitylabel',
namespace=Namespace.SECLABEL)
if security is None:
continue
try:
security_label = SecurityLabel.from_node(security)
except ValueError:
continue
labels[label] = security_label
if item.getAttr('default') == 'true':
default = label
yield Catalog(labels=labels, default=default)
def _make_catalog_request(domain, jid):
iq = Iq(typ='get', to=domain)
iq.addChild(name='catalog',
namespace=Namespace.SECLABEL_CATALOG,
attrs={'to': jid})
return iq
@dataclass
class Displaymarking:
name: str
fgcolor: str
bgcolor: str
def to_node(self):
displaymarking = Node(tag='displaymarking')
if self.fgcolor and self.fgcolor != '#000':
displaymarking.setAttr('fgcolor', self.fgcolor)
if self.bgcolor and self.bgcolor != '#FFF':
displaymarking.setAttr('bgcolor', self.bgcolor)
if self.name:
displaymarking.setData(self.name)
return displaymarking
@classmethod
def from_node(cls, node):
return cls(name=node.getData(),
fgcolor=node.getAttr('fgcolor') or '#000',
bgcolor=node.getAttr('bgcolor') or '#FFF')
@dataclass
class SecurityLabel:
displaymarking: Displaymarking
label: Node
def to_node(self):
security = Node(tag='securitylabel',
attrs={'xmlns': Namespace.SECLABEL})
if self.displaymarking is not None:
security.addChild(node=self.displaymarking.to_node())
security.addChild(node=self.label)
return security
@classmethod
def from_node(cls, security):
displaymarking = security.getTag('displaymarking')
if displaymarking is not None:
displaymarking = Displaymarking.from_node(displaymarking)
label = security.getTag('label')
if label is None:
raise ValueError('label node missing')
return cls(displaymarking=displaymarking, label=label)
@dataclass
class Catalog:
labels: Dict[str, SecurityLabel]
default: str
def get_label_names(self):
return list(self.labels.keys())
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