def new_websocket_client(self):
"""Called after a new WebSocket connection has been established."""
# Reopen the eventlet hub to make sure we don't share an epoll
# fd with parent and/or siblings, which would be bad
from eventlet import hubs
hubs.use_hub()
# The nova expected behavior is to have token
# passed to the method GET of the request
parse = urlparse.urlparse(self.path)
if parse.scheme not in ('http', 'https'):
# From a bug in urlparse in Python < 2.7.4 we cannot support
# special schemes (cf: http://bugs.python.org/issue9374)
if sys.version_info < (2, 7, 4):
raise exception.NovaException(
_("We do not support scheme '%s' under Python < 2.7.4, "
"please use http or https") % parse.scheme)
query = parse.query
token = urlparse.parse_qs(query).get("token", [""]).pop()
if not token:
# NoVNC uses it's own convention that forward token
# from the request to a cookie header, we should check
# also for this behavior
hcookie = self.headers.getheader('cookie')
if hcookie:
cookie = Cookie.SimpleCookie()
cookie.load(hcookie)
if 'token' in 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:
raise exception.InvalidToken(token=token)
self.msg(_('connect info: %s'), str(connect_info))
host = connect_info['host']
port = int(connect_info['port'])
# Connect to the target
self.msg(
_("connecting to: %(host)s:%(port)s") % {
'host': host,
'port': 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 data.split("\r\n")[0].find("200") == -1:
raise exception.InvalidConnectionInfo()
tsock.recv(len(data))
break
# Start proxying
try:
self.do_proxy(tsock)
except Exception:
if tsock:
tsock.shutdown(socket.SHUT_RDWR)
tsock.close()
self.vmsg(
_("%(host)s:%(port)s: Target closed") % {
'host': host,
'port': port
})
raise
def new_websocket_client(self):
"""Called after a new WebSocket connection has been established."""
# Reopen the eventlet hub to make sure we don't share an epoll
# fd with parent and/or siblings, which would be bad
from eventlet import hubs
hubs.use_hub()
# The nova expected behavior is to have token
# passed to the method GET of the request
parse = urlparse.urlparse(self.path)
if parse.scheme not in ('http', 'https'):
# From a bug in urlparse in Python < 2.7.4 we cannot support
# special schemes (cf: http://bugs.python.org/issue9374)
if sys.version_info < (2, 7, 4):
raise exception.NovaException(
_("We do not support scheme '%s' under Python < 2.7.4, "
"please use http or https") % parse.scheme)
query = parse.query
token = urlparse.parse_qs(query).get("token", [""]).pop()
if not token:
# NoVNC uses it's own convention that forward token
# from the request to a cookie header, we should check
# also for this behavior
hcookie = self.headers.get('cookie')
if hcookie:
cookie = Cookie.SimpleCookie()
for hcookie_part in hcookie.split(';'):
hcookie_part = hcookie_part.lstrip()
try:
cookie.load(hcookie_part)
except Cookie.CookieError:
# NOTE(stgleb): Do not print out cookie content
# for security reasons.
LOG.warning('Found malformed cookie')
else:
if 'token' in cookie:
token = cookie['token'].value
ctxt = context.get_admin_context()
connect_info = self._get_connect_info(ctxt, token)
# Verify Origin
expected_origin_hostname = self.headers.get('Host')
if ':' in expected_origin_hostname:
e = expected_origin_hostname
if '[' in e and ']' in e:
expected_origin_hostname = e.split(']')[0][1:]
else:
expected_origin_hostname = e.split(':')[0]
expected_origin_hostnames = CONF.console.allowed_origins
expected_origin_hostnames.append(expected_origin_hostname)
origin_url = self.headers.get('Origin')
# missing origin header indicates non-browser client which is OK
if origin_url is not None:
origin = urlparse.urlparse(origin_url)
origin_hostname = origin.hostname
origin_scheme = origin.scheme
# If the console connection was forwarded by a proxy (example:
# haproxy), the original protocol could be contained in the
# X-Forwarded-Proto header instead of the Origin header. Prefer the
# forwarded protocol if it is present.
forwarded_proto = self.headers.get('X-Forwarded-Proto')
if forwarded_proto is not None:
origin_scheme = forwarded_proto
if origin_hostname == '' or origin_scheme == '':
detail = _("Origin header not valid.")
raise exception.ValidationError(detail=detail)
if origin_hostname not in expected_origin_hostnames:
detail = _("Origin header does not match this host.")
raise exception.ValidationError(detail=detail)
if not self.verify_origin_proto(connect_info, origin_scheme):
detail = _("Origin header protocol does not match this host.")
raise exception.ValidationError(detail=detail)
self.msg(_('connect info: %s'), str(connect_info))
host = connect_info.host
port = connect_info.port
# Connect to the target
self.msg(
_("connecting to: %(host)s:%(port)s") % {
'host': host,
'port': port
})
tsock = self.socket(host, port, connect=True)
# Handshake as necessary
if 'internal_access_path' in connect_info:
path = connect_info.internal_access_path
if path:
tsock.send(
encodeutils.safe_encode('CONNECT %s HTTP/1.1\r\n\r\n' %
path))
end_token = "\r\n\r\n"
while True:
data = tsock.recv(4096, socket.MSG_PEEK)
token_loc = data.find(end_token)
if token_loc != -1:
if data.split("\r\n")[0].find("200") == -1:
raise exception.InvalidConnectionInfo()
# remove the response from recv buffer
tsock.recv(token_loc + len(end_token))
break
if self.server.security_proxy is not None:
tenant_sock = TenantSock(self)
try:
tsock = self.server.security_proxy.connect(tenant_sock, tsock)
except exception.SecurityProxyNegotiationFailed:
LOG.exception("Unable to perform security proxying, shutting "
"down connection")
tenant_sock.close()
tsock.shutdown(socket.SHUT_RDWR)
tsock.close()
raise
tenant_sock.finish_up()
# Start proxying
try:
self.do_proxy(tsock)
except Exception:
if tsock:
tsock.shutdown(socket.SHUT_RDWR)
tsock.close()
self.vmsg(
_("%(host)s:%(port)s: "
"Websocket client or target closed") % {
'host': host,
'port': port
})
raise
def new_websocket_client(self):
"""Called after a new WebSocket connection has been established."""
# Reopen the eventlet hub to make sure we don't share an epoll
# fd with parent and/or siblings, which would be bad
from eventlet import hubs
hubs.use_hub()
# The nova expected behavior is to have token
# passed to the method GET of the request
parse = urlparse.urlparse(self.path)
if parse.scheme not in ('http', 'https'):
# From a bug in urlparse in Python < 2.7.4 we cannot support
# special schemes (cf: http://bugs.python.org/issue9374)
if sys.version_info < (2, 7, 4):
raise exception.NovaException(
_("We do not support scheme '%s' under Python < 2.7.4, "
"please use http or https") % parse.scheme)
query = parse.query
token = urlparse.parse_qs(query).get("token", [""]).pop()
if not token:
# NoVNC uses it's own convention that forward token
# from the request to a cookie header, we should check
# also for this behavior
hcookie = self.headers.getheader('cookie')
if hcookie:
cookie = Cookie.SimpleCookie()
for hcookie_part in hcookie.split(';'):
hcookie_part = hcookie_part.lstrip()
try:
cookie.load(hcookie_part)
except Cookie.CookieError:
# NOTE(stgleb): Do not print out cookie content
# for security reasons.
LOG.warning(_LW('Found malformed cookie'))
else:
if 'token' in 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:
raise exception.InvalidToken(token=token)
# Verify Origin
expected_origin_hostname = self.headers.getheader('Host')
if ':' in expected_origin_hostname:
e = expected_origin_hostname
if '[' in e and ']' in e:
expected_origin_hostname = e.split(']')[0][1:]
else:
expected_origin_hostname = e.split(':')[0]
expected_origin_hostnames = CONF.console.allowed_origins
expected_origin_hostnames.append(expected_origin_hostname)
origin_url = self.headers.getheader('Origin')
# missing origin header indicates non-browser client which is OK
if origin_url is not None:
origin = urlparse.urlparse(origin_url)
origin_hostname = origin.hostname
origin_scheme = origin.scheme
if origin_hostname == '' or origin_scheme == '':
detail = _("Origin header not valid.")
raise exception.ValidationError(detail=detail)
if origin_hostname not in expected_origin_hostnames:
detail = _("Origin header does not match this host.")
raise exception.ValidationError(detail=detail)
if not self.verify_origin_proto(connect_info, origin_scheme):
detail = _("Origin header protocol does not match this host.")
raise exception.ValidationError(detail=detail)
self.msg(_('connect info: %s'), str(connect_info))
host = connect_info['host']
port = int(connect_info['port'])
# Connect to the target
self.msg(
_("connecting to: %(host)s:%(port)s") % {
'host': host,
'port': 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 data.split("\r\n")[0].find("200") == -1:
raise exception.InvalidConnectionInfo()
tsock.recv(len(data))
break
# Start proxying
try:
self.do_proxy(tsock)
except Exception:
if tsock:
tsock.shutdown(socket.SHUT_RDWR)
tsock.close()
self.vmsg(
_("%(host)s:%(port)s: "
"Websocket client or target closed") % {
'host': host,
'port': port
})
raise
