Pull NovaWebSocketProxy class out of nova-novncproxy binary

To allow sharing of proxy code between nova-novncproxy and
nova-spicehtml5proxy, pull the NovaWebSocketProxy class
out of nova-novncproxy into a new nova/console/websocketproxy.py
file

Adds previously missing websockify dep to pip-requires.

Blueprint: libvirt-spice
Change-Id: If1334256680e7075598f00ce153cf6f021cc720f
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/nova/console/websocketproxy.py b/nova/console/websocketproxy.py
new file mode 100644
index 000000000..ce9243d46
--- /dev/null
+++ b/nova/console/websocketproxy.py
@@ -0,0 +1,89 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright (c) 2012 OpenStack, LLC.
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+'''
+Websocket proxy that is compatible with OpenStack Nova.
+Leverages websockify.py by Joel Martin
+'''
+
+import Cookie
+import socket
+
+import websockify
+
+from nova.consoleauth import rpcapi as consoleauth_rpcapi
+from nova import context
+from nova.openstack.common import log as logging
+
+LOG = logging.getLogger(__name__)
+
+
+class NovaWebSocketProxy(websockify.WebSocketProxy):
+    def __init__(self, *args, **kwargs):
+        websockify.WebSocketProxy.__init__(self, unix_target=None,
+                                           target_cfg=None,
+                                           ssl_target=None, *args, **kwargs)
+
+    def new_client(self):
+        """
+        Called after a new WebSocket connection has been established.
+        """
+        cookie = Cookie.SimpleCookie()
+        cookie.load(self.headers.getheader('cookie'))
+        token = cookie['token'].value
+        ctxt = context.get_admin_context()
+        rpcapi = consoleauth_rpcapi.ConsoleAuthAPI()
+        connect_info = rpcapi.check_token(ctxt, token=token)
+
+        if not connect_info:
+            LOG.audit("Invalid Token: %s", token)
+            raise Exception(_("Invalid Token"))
+
+        host = connect_info['host']
+        port = int(connect_info['port'])
+
+        # Connect to the target
+        self.msg("connecting to: %s:%s" % (host, port))
+        LOG.audit("connecting to: %s:%s" % (host, port))
+        tsock = self.socket(host, port, connect=True)
+
+        # Handshake as necessary
+        if connect_info.get('internal_access_path'):
+            tsock.send("CONNECT %s HTTP/1.1\r\n\r\n" %
+                        connect_info['internal_access_path'])
+            while True:
+                data = tsock.recv(4096, socket.MSG_PEEK)
+                if data.find("\r\n\r\n") != -1:
+                    if not data.split("\r\n")[0].find("200"):
+                        LOG.audit("Invalid Connection Info %s", token)
+                        raise Exception(_("Invalid Connection Info"))
+                    tsock.recv(len(data))
+                    break
+
+        if self.verbose and not self.daemon:
+            print(self.traffic_legend)
+
+        # Start proxying
+        try:
+            self.do_proxy(tsock)
+        except Exception:
+            if tsock:
+                tsock.shutdown(socket.SHUT_RDWR)
+                tsock.close()
+                self.vmsg("%s:%s: Target closed" % (host, port))
+                LOG.audit("%s:%s: Target closed" % (host, port))
+            raise