145 lines
5.0 KiB
Python
Executable File
145 lines
5.0 KiB
Python
Executable File
#!/usr/bin/env python
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# pylint: disable=C0103
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Ajax Console Proxy Server"""
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from eventlet import greenthread
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from eventlet.green import urllib2
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import exceptions
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import gettext
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import os
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import sys
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import time
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import urlparse
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# If ../nova/__init__.py exists, add ../ to Python search path, so that
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# it will override what happens to be installed in /usr/(local/)lib/python...
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possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
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os.pardir,
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os.pardir))
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if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
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sys.path.insert(0, possible_topdir)
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gettext.install('nova', unicode=1)
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from nova import flags
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from nova import log as logging
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from nova import rpc
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from nova import utils
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from nova import wsgi
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FLAGS = flags.FLAGS
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flags.DEFINE_integer('ajax_console_idle_timeout', 300,
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'Seconds before idle connection destroyed')
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flags.DEFINE_flag(flags.HelpFlag())
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flags.DEFINE_flag(flags.HelpshortFlag())
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flags.DEFINE_flag(flags.HelpXMLFlag())
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LOG = logging.getLogger('nova.ajax_console_proxy')
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LOG.setLevel(logging.DEBUG)
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LOG.addHandler(logging.StreamHandler())
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class AjaxConsoleProxy(object):
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tokens = {}
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def __call__(self, env, start_response):
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try:
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if 'QUERY_STRING' in env:
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req_url = '%s://%s%s?%s' % (env['wsgi.url_scheme'],
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env['HTTP_HOST'],
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env['PATH_INFO'],
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env['QUERY_STRING'])
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else:
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req_url = '%s://%s%s' % (env['wsgi.url_scheme'],
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env['HTTP_HOST'],
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env['PATH_INFO'])
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if 'HTTP_REFERER' in env:
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auth_url = env['HTTP_REFERER']
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else:
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auth_url = req_url
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auth_params = urlparse.parse_qs(urlparse.urlparse(auth_url).query)
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parsed_url = urlparse.urlparse(req_url)
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auth_info = AjaxConsoleProxy.tokens[auth_params['token'][0]]
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args = auth_info['args']
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auth_info['last_activity'] = time.time()
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remote_url = ("http://%s:%s%s?token=%s" % (
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str(args['host']),
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str(args['port']),
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parsed_url.path,
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str(args['token'])))
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opener = urllib2.urlopen(remote_url, env['wsgi.input'].read())
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body = opener.read()
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info = opener.info()
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start_response("200 OK", info.dict.items())
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return body
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except (exceptions.KeyError):
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if env['PATH_INFO'] != '/favicon.ico':
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LOG.audit("Unauthorized request %s, %s"
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% (req_url, str(env)))
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start_response("401 NOT AUTHORIZED", [])
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return "Not Authorized"
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except Exception:
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start_response("500 ERROR", [])
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return "Server Error"
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def register_listeners(self):
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class TopicProxy():
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@staticmethod
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def authorize_ajax_console(context, **kwargs):
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AjaxConsoleProxy.tokens[kwargs['token']] = \
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{'args': kwargs, 'last_activity': time.time()}
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conn = rpc.Connection.instance(new=True)
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consumer = rpc.TopicAdapterConsumer(
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connection=conn,
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proxy=TopicProxy,
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topic=FLAGS.ajax_console_proxy_topic)
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def delete_expired_tokens():
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now = time.time()
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to_delete = []
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for k, v in AjaxConsoleProxy.tokens.items():
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if now - v['last_activity'] > FLAGS.ajax_console_idle_timeout:
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to_delete.append(k)
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for k in to_delete:
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del AjaxConsoleProxy.tokens[k]
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utils.LoopingCall(consumer.fetch, enable_callbacks=True).start(0.1)
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utils.LoopingCall(delete_expired_tokens).start(1)
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if __name__ == '__main__':
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utils.default_flagfile()
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FLAGS(sys.argv)
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logging.setup()
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server = wsgi.Server()
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acp = AjaxConsoleProxy()
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acp.register_listeners()
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server.start(acp, FLAGS.ajax_console_proxy_port, host='0.0.0.0')
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server.wait()
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