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##############################################################################
#
# Copyright (c) 2003 Nexedi SARL and Contributors. All Rights Reserved.
# Sebastien Robin <seb@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
import smtplib # to send emails
from Publication import Publication,Subscriber
from Subscription import Signature
from xml.dom.ext.reader.Sax2 import FromXmlStream, FromXml
from xml.dom.minidom import parse, parseString
from XMLSyncUtils import XMLSyncUtils
from Conduit.ERP5Conduit import ERP5Conduit
from Products.CMFCore.utils import getToolByName
from Products.ERP5Security.ERP5UserManager import ERP5UserManager
from Products.PluggableAuthService.interfaces.plugins import\
IAuthenticationPlugin
from AccessControl.SecurityManagement import newSecurityManager
import commands
from zLOG import LOG
class PublicationSynchronization(XMLSyncUtils):
"""
"""
def PubSyncInit(self, publication=None, xml_client=None, subscriber=None,
sync_type=None):
"""
Read the client xml message
Send the first XML message from the server
"""
LOG('PubSyncInit',0,'Starting... publication: %s' % str(publication))
#the session id is set at the same value of those of the client
subscriber.setSessionId(self.getSessionId(xml_client))
#same for the message id
subscriber.setMessageId(self.getMessageId(xml_client))
#at the begining of the synchronization the subscriber is not authenticated
subscriber.setAuthenticated(False)
#the last_message_id is 1 because the message that
#we are about to send is the message 1
subscriber.initLastMessageId(1)
alert = None
# Get informations from the body
if xml_client is not None: # We have received a message
last_anchor = self.getAlertLastAnchor(xml_client)
next_anchor = self.getAlertNextAnchor(xml_client)
alert = self.checkAlert(xml_client)
alert_code = self.getAlertCode(xml_client)
cred = self.checkCred(xml_client)
#XXX this is in developement, it's just for tests
if publication.isAuthenticationRequired():
if not cred:
LOG('PubSyncInit',0,'authentication required')
# Prepare the xml message for the Sync initialization package
cmd_id = 1 # specifies a SyncML message-unique command identifier
xml_list = []
xml = xml_list.append
xml('<SyncML>\n')
# syncml header
xml(self.SyncMLHeader(subscriber.getSessionId(),
subscriber.getMessageId(), subscriber.getSubscriptionUrl(),
publication.getPublicationUrl()))
# syncml body
xml(' <SyncBody>\n')
# chal message
xml(self.SyncMLChal(cmd_id, "SyncHdr",
publication.getPublicationUrl(), subscriber.getSubscriptionUrl(),
publication.getAuthenticationFormat(),
publication.getAuthenticationType(), self.AUTH_REQUIRED))
cmd_id += 1
xml(' </SyncBody>\n')
xml('</SyncML>\n')
xml_a = ''.join(xml_list)
self.sendResponse(from_url=publication.getPublicationUrl(),
to_url=subscriber.getSubscriptionUrl(),
sync_id=publication.getTitle(), xml=xml_a, domain=publication)
else:#(if the subscriber begin the session with a cred) -> to be tested
(authentication_format, authentication_type, data) = self.getCred(xml_client)
#at the begining, the code is initialised at UNAUTHORIZED
auth_code=self.UNAUTHORIZED
if authentication_format == publication.getAuthenticationFormat():
if authentication_type == publication.getAuthenticationType():
decoded = subscriber.decode(authentication_format, data)
if decoded not in ('', None) and decoded.__contains__(':'):
(login, password) = decoded.split(':')
uf = self.getPortalObject().acl_users
for plugin_name, plugin in uf._getOb('plugins').listPlugins(
IAuthenticationPlugin ):
if plugin.authenticateCredentials(
{'login':login, 'password':password}) is not None:
subscriber.setAuthenticated(True)
auth_code=self.AUTH_ACCEPTED
#here we must log in with the user authenticated :
user = uf.getUserById(login).__of__(uf)
newSecurityManager(None, user)
subscriber.setUser(login)
break
#in all others cases, the auth_code is set to UNAUTHORIZED
# Prepare the xml message for the Sync initialization package
cmd_id = 1 # specifies a SyncML message-unique command identifier
xml_list = []
xml = xml_list.append
xml('<SyncML>\n')
# syncml header
xml(self.SyncMLHeader(subscriber.getSessionId(),
subscriber.getMessageId(),
subscriber.getSubscriptionUrl(),
publication.getPublicationUrl()))
# syncml body
xml(' <SyncBody>\n')
xml(self.SyncMLStatus(cmd_id, subscriber.getSubscriptionUrl(),
publication.getPublicationUrl(), auth_code))
xml(' </SyncBody>\n')
xml('</SyncML>\n')
xml_a = ''.join(xml_list)
self.sendResponse(from_url=publication.getPublicationUrl(),
to_url=subscriber.getSubscriptionUrl(),
sync_id=publication.getTitle(), xml=xml_a, domain=publication)
else :
# If slow sync, then resend everything
if alert_code == self.SLOW_SYNC:
LOG('Warning !!!, reseting client synchronization for subscriber:',0,
subscriber)
subscriber.resetAllSignatures()
# Check if the last time synchronization is the same as the client one
mess='\nsubscriber.getNextAnchor:\t%s\nsubscriber.getLastAnchor:\t%s\
\nlast_anchor:\t\t\t%s\nnext_anchor:\t\t\t%s' % (subscriber.getNextAnchor(), subscriber.getLastAnchor(), last_anchor, next_anchor)
LOG('PubSyncInit',0,mess)
if subscriber.getNextAnchor() != last_anchor:
if last_anchor == None:
LOG('PubSyncInit',0,'anchor null')
raise ValueError, "Sorry, the anchor was null"
else:
message = "bad anchors in PubSyncInit! " + \
subscriber.getNextAnchor() + " and " + last_anchor
LOG('PubSyncInit',0,message)
else:
subscriber.setNextAnchor(next_anchor)
# We have to set every object as NOT_SYNCHRONIZED
subscriber.startSynchronization()
else:
# We have started the sync from the server (may be for a conflict resolution)
pass
if alert is not None and not publication.isAuthenticationRequired():
# Prepare the xml message for the Sync initialization package
cmd_id = 1 # specifies a SyncML message-unique command identifier
xml_list = []
xml = xml_list.append
xml('<SyncML>\n')
# syncml header
xml(self.SyncMLHeader(subscriber.getSessionId(),
subscriber.incrementMessageId(), subscriber.getSubscriptionUrl(),
publication.getPublicationUrl()))
# syncml body
xml(' <SyncBody>\n')
# alert message
xml(self.SyncMLAlert(cmd_id, sync_type, subscriber.getSubscriptionUrl(),
publication.getPublicationUrl(), subscriber.getLastAnchor(),
subscriber.getNextAnchor()))
cmd_id += 1
xml(' </SyncBody>\n')
xml('</SyncML>\n')
xml_a = ''.join(xml_list)
self.sendResponse(from_url=publication.getPublicationUrl(),
to_url=subscriber.getSubscriptionUrl(), sync_id=publication.getTitle(),
xml=xml_a, domain=publication)
return {'has_response':1,'xml':xml_a}
def PubSync(self, id, msg=None, RESPONSE=None, subscriber=None):
"""
This is the synchronization method for the server
"""
LOG('PubSync',0,'Starting... id: %s' % str(id))
# Read the request from the client
xml_client = msg
if xml_client is None:
xml_client = self.readResponse(from_url='file://tmp/sync_server')
LOG('PubSync',0,'Starting... msg: %s' % str(xml_client))
result = None
publication = self.getPublication(id)
if xml_client is not None:
if isinstance(xml_client, str) or isinstance(xml_client, unicode):
xml_client = parseString(xml_client)
first_node = xml_client.childNodes[0]
if first_node.nodeName != "SyncML":
LOG('PubSync',0,'This is not a SyncML Message')
raise ValueError, "Sorry, This is not a SyncML Message"
alert_code = self.getAlertCode(xml_client)
# Get informations from the header
client_header = first_node.childNodes[1]
if client_header.nodeName != "SyncHdr":
LOG('PubSync',0,'This is not a SyncML Header')
raise ValueError, "Sorry, This is not a SyncML Header"
for subnode in client_header.childNodes:
if subnode.nodeType == subnode.ELEMENT_NODE and \
subnode.nodeName == "Source":
for subnode2 in subnode.childNodes:
if subnode2.nodeType == subnode2.ELEMENT_NODE and \
subnode2.nodeName == "LocURI":
subscription_url = str(subnode2.childNodes[0].data)
# Get the subscriber or create it if not already in the list
subscriber = publication.getSubscriber(subscription_url)
if subscriber == None:
subscriber = Subscriber(publication.generateNewId(),subscription_url)
subscriber.setXMLMapping(publication.getXMLMapping())
publication.addSubscriber(subscriber)
# first synchronization
result = self.PubSyncInit(publication,xml_client,subscriber=subscriber,
sync_type=self.SLOW_SYNC)
elif self.checkAlert(xml_client) and \
alert_code in (self.TWO_WAY,self.SLOW_SYNC):
result = self.PubSyncInit(publication=publication,
xml_client=xml_client, subscriber=subscriber, sync_type=alert_code)
else:
#we log the user authenticated to do the synchronization with him
if publication.isAuthenticationRequired():
if subscriber.isAuthenticated():
uf = self.getPortalObject().acl_users
user = uf.getUserById(subscriber.getUser()).__of__(uf)
newSecurityManager(None, user)
result = self.PubSyncModif(publication, xml_client)
else:
result = self.PubSyncModif(publication, xml_client)
elif subscriber is not None:
# This looks like we are starting a synchronization after
# a conflict resolution by the user
result = self.PubSyncInit(publication=publication, xml_client=None,
subscriber=subscriber,sync_type=self.TWO_WAY)
if RESPONSE is not None:
RESPONSE.redirect('managePublications')
elif result is not None:
return result
def PubSyncModif(self, publication, xml_client):
"""
The modidification message for the publication
"""
return self.SyncModif(publication,xml_client)