54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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from __future__ import division
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from tornado.websocket import WebSocketHandler
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from tornado.ioloop import IOLoop
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import json
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import state
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import link
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from utils import json_dumps
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import logging
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logger = logging.getLogger('websocket')
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class Handler(WebSocketHandler):
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def check_origin(self, origin):
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# allow access to websocket from site, installer and loader (local file)
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return self.request.host in origin \
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or origin == 'null'
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def open(self):
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if self.request.headers['origin'] not in ('null',) \
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and self.request.host not in self.request.headers['origin']:
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logger.debug('reject cross site attempt to open websocket %s', self.request)
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self.close()
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if self not in state.websockets:
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state.websockets.append(self)
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state.info.update(link.post('info'))
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self.post('info', state.info)
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#websocket calls
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def on_message(self, message):
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action, data = json.loads(message)
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if state.tasks:
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state.tasks.queue(action, data)
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def on_close(self):
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if self in state.websockets:
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state.websockets.remove(self)
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def post(self, event, data):
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message = json_dumps([event, data])
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main = IOLoop.instance()
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main.add_callback(lambda: self.write_message(message))
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def trigger_event(event, data):
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if len(state.websockets):
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logger.debug('trigger event %s %s %s', event, data, len(state.websockets))
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for ws in state.websockets:
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try:
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ws.post(event, data)
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except:
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logger.debug('failed to send to ws %s %s %s', ws, event, data, exc_info=1)
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