/usr/share/pyshared/qpid/delegates.py is in python-qpid 0.22+dfsg-1.
This file is owned by root:root, with mode 0o644.
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
#
import os, connection, session
from util import notify, get_client_properties_with_defaults
from datatypes import RangedSet
from exceptions import VersionError, Closed
from logging import getLogger
from ops import Control
import sys
from qpid import sasl
log = getLogger("qpid.io.ctl")
class Delegate:
def __init__(self, connection, delegate=session.client):
self.connection = connection
self.delegate = delegate
def received(self, op):
ssn = self.connection.attached.get(op.channel)
if ssn is None:
ch = connection.Channel(self.connection, op.channel)
else:
ch = ssn.channel
if isinstance(op, Control):
log.debug("RECV %s", op)
getattr(self, op.NAME)(ch, op)
elif ssn is None:
ch.session_detached()
else:
ssn.received(op)
def connection_close(self, ch, close):
self.connection.close_code = (close.reply_code, close.reply_text)
ch.connection_close_ok()
raise Closed(close.reply_text)
def connection_close_ok(self, ch, close_ok):
self.connection.opened = False
self.connection.closed = True
notify(self.connection.condition)
def connection_heartbeat(self, ch, hrt):
pass
def session_attach(self, ch, a):
try:
self.connection.attach(a.name, ch, self.delegate, a.force)
ch.session_attached(a.name)
except connection.ChannelBusy:
ch.session_detached(a.name)
except connection.SessionBusy:
ch.session_detached(a.name)
def session_attached(self, ch, a):
notify(ch.session.condition)
def session_detach(self, ch, d):
#send back the confirmation of detachment before removing the
#channel from the attached set; this avoids needing to hold the
#connection lock during the sending of this control and ensures
#that if the channel is immediately reused for a new session the
#attach request will follow the detached notification.
ch.session_detached(d.name)
ssn = self.connection.detach(d.name, ch)
def session_detached(self, ch, d):
self.connection.detach(d.name, ch)
def session_request_timeout(self, ch, rt):
ch.session_timeout(rt.timeout);
def session_command_point(self, ch, cp):
ssn = ch.session
ssn.receiver.next_id = cp.command_id
ssn.receiver.next_offset = cp.command_offset
def session_completed(self, ch, cmp):
ch.session.sender.completed(cmp.commands)
if cmp.timely_reply:
ch.session_known_completed(cmp.commands)
notify(ch.session.condition)
def session_known_completed(self, ch, kn_cmp):
ch.session.receiver.known_completed(kn_cmp.commands)
def session_flush(self, ch, f):
rcv = ch.session.receiver
if f.expected:
if rcv.next_id == None:
exp = None
else:
exp = RangedSet(rcv.next_id)
ch.session_expected(exp)
if f.confirmed:
ch.session_confirmed(rcv._completed)
if f.completed:
ch.session_completed(rcv._completed)
class Server(Delegate):
def start(self):
self.connection.read_header()
# XXX
self.connection.write_header(0, 10)
connection.Channel(self.connection, 0).connection_start(mechanisms=["ANONYMOUS"])
def connection_start_ok(self, ch, start_ok):
ch.connection_tune(channel_max=65535)
def connection_tune_ok(self, ch, tune_ok):
pass
def connection_open(self, ch, open):
self.connection.opened = True
ch.connection_open_ok()
notify(self.connection.condition)
class Client(Delegate):
def __init__(self, connection, username=None, password=None,
mechanism=None, heartbeat=None, **kwargs):
Delegate.__init__(self, connection)
provided_client_properties = kwargs.get("client_properties")
self.client_properties=get_client_properties_with_defaults(provided_client_properties)
##
## self.acceptableMechanisms is the list of SASL mechanisms that the client is willing to
## use. If it's None, then any mechanism is acceptable.
##
self.acceptableMechanisms = None
if mechanism:
self.acceptableMechanisms = mechanism.split(" ")
self.heartbeat = heartbeat
self.username = username
self.password = password
self.sasl = sasl.Client()
if username and len(username) > 0:
self.sasl.setAttr("username", str(username))
if password and len(password) > 0:
self.sasl.setAttr("password", str(password))
self.sasl.setAttr("service", str(kwargs.get("service", "qpidd")))
if "host" in kwargs:
self.sasl.setAttr("host", str(kwargs["host"]))
if "min_ssf" in kwargs:
self.sasl.setAttr("minssf", kwargs["min_ssf"])
if "max_ssf" in kwargs:
self.sasl.setAttr("maxssf", kwargs["max_ssf"])
self.sasl.init()
def start(self):
# XXX
cli_major = 0
cli_minor = 10
self.connection.write_header(cli_major, cli_minor)
magic, _, _, major, minor = self.connection.read_header()
if not (magic == "AMQP" and major == cli_major and minor == cli_minor):
raise VersionError("client: %s-%s, server: %s-%s" %
(cli_major, cli_minor, major, minor))
def connection_start(self, ch, start):
mech_list = ""
for mech in start.mechanisms:
if (not self.acceptableMechanisms) or mech in self.acceptableMechanisms:
mech_list += str(mech) + " "
mech = None
initial = None
try:
mech, initial = self.sasl.start(mech_list)
except Exception, e:
raise Closed(str(e))
ch.connection_start_ok(client_properties=self.client_properties,
mechanism=mech, response=initial)
def connection_secure(self, ch, secure):
resp = None
try:
resp = self.sasl.step(secure.challenge)
except Exception, e:
raise Closed(str(e))
ch.connection_secure_ok(response=resp)
def connection_tune(self, ch, tune):
ch.connection_tune_ok(heartbeat=self.heartbeat)
ch.connection_open()
self.connection.user_id = self.sasl.auth_username()
self.connection.security_layer_tx = self.sasl
def connection_open_ok(self, ch, open_ok):
self.connection.security_layer_rx = self.sasl
self.connection.opened = True
notify(self.connection.condition)
def connection_heartbeat(self, ch, hrt):
ch.connection_heartbeat()
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