def process_message(self, algohdr, seqhdr, body):
typeid = ua.NodeId.from_binary(body)
requesthdr = ua.RequestHeader.from_binary(body)
try:
return self._process_message(typeid, requesthdr, algohdr, seqhdr, body)
except utils.ServiceError as e:
status = ua.StatusCode(e.code)
response = ua.ServiceFault()
response.ResponseHeader.ServiceResult = status
self.logger.info("sending service fault response: %s (%s)", status.doc, status.name)
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
return True
def process_message(self, algohdr, seqhdr, body):
typeid = ua.NodeId.from_binary(body)
requesthdr = ua.RequestHeader.from_binary(body)
if typeid == ua.NodeId(ua.ObjectIds.CreateSessionRequest_Encoding_DefaultBinary):
self.logger.info("Create session request")
params = ua.CreateSessionParameters.from_binary(body)
self.session = self.iserver.create_session(self.name) # create the session on server
sessiondata = self.session.create_session(params, sockname=self.sockname) # get a session creation result to send back
response = ua.CreateSessionResponse()
response.Parameters = sessiondata
self.logger.info("sending create sesssion response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.CloseSessionRequest_Encoding_DefaultBinary):
self.logger.info("Close session request")
deletesubs = ua.unpack_uatype('Boolean', body)
self.session.close_session(deletesubs)
response = ua.CloseSessionResponse()
self.logger.info("sending close sesssion response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.ActivateSessionRequest_Encoding_DefaultBinary):
self.logger.info("Activate session request")
params = ua.ActivateSessionParameters.from_binary(body)
if not self.session:
#result = ua.ActivateSessionResult()
# result.Results.append(ua.StatusCode(ua.StatusCodes.BadSessionIdInvalid))
response = ua.ServiceFault()
response.ResponseHeader.ServiceResult = ua.StatusCode(ua.StatusCodes.BadSessionIdInvalid)
self.logger.info("request to activate none existing session, sending service fault response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
return True
result = self.session.activate_session(params)
response = ua.ActivateSessionResponse()
response.Parameters = result
self.logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.ReadRequest_Encoding_DefaultBinary):
self.logger.info("Read request")
params = ua.ReadParameters.from_binary(body)
results = self.session.read(params)
response = ua.ReadResponse()
response.Results = results
self.logger.info("sending read response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.WriteRequest_Encoding_DefaultBinary):
self.logger.info("Write request")
params = ua.WriteParameters.from_binary(body)
results = self.session.write(params)
response = ua.WriteResponse()
response.Results = results
self.logger.info("sending write response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.BrowseRequest_Encoding_DefaultBinary):
self.logger.info("Browse request")
params = ua.BrowseParameters.from_binary(body)
results = self.session.browse(params)
response = ua.BrowseResponse()
response.Results = results
self.logger.info("sending browse response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.GetEndpointsRequest_Encoding_DefaultBinary):
self.logger.info("get endpoints request")
params = ua.GetEndpointsParameters.from_binary(body)
endpoints = self.iserver.get_endpoints(params, sockname=self.sockname)
response = ua.GetEndpointsResponse()
response.Endpoints = endpoints
self.logger.info("sending get endpoints response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.FindServersRequest_Encoding_DefaultBinary):
self.logger.info("find servers request")
params = ua.FindServersParameters.from_binary(body)
servers = self.iserver.find_servers(params)
response = ua.FindServersResponse()
response.Servers = servers
self.logger.info("sending find servers response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.TranslateBrowsePathsToNodeIdsRequest_Encoding_DefaultBinary):
self.logger.info("translate browsepaths to nodeids request")
params = ua.TranslateBrowsePathsToNodeIdsParameters.from_binary(body)
paths = self.session.translate_browsepaths_to_nodeids(params.BrowsePaths)
response = ua.TranslateBrowsePathsToNodeIdsResponse()
response.Results = paths
self.logger.info("sending translate browsepaths to nodeids response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.AddNodesRequest_Encoding_DefaultBinary):
self.logger.info("add nodes request")
params = ua.AddNodesParameters.from_binary(body)
results = self.session.add_nodes(params.NodesToAdd)
response = ua.AddNodesResponse()
response.Results = results
self.logger.info("sending add node response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.CreateSubscriptionRequest_Encoding_DefaultBinary):
self.logger.info("create subscription request")
params = ua.CreateSubscriptionParameters.from_binary(body)
result = self.session.create_subscription(params, self.forward_publish_response)
response = ua.CreateSubscriptionResponse()
response.Parameters = result
self.logger.info("sending create subscription response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.DeleteSubscriptionsRequest_Encoding_DefaultBinary):
self.logger.info("delete subscriptions request")
params = ua.DeleteSubscriptionsParameters.from_binary(body)
results = self.session.delete_subscriptions(params.SubscriptionIds)
response = ua.DeleteSubscriptionsResponse()
response.Results = results
self.logger.info("sending delte subscription response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.CreateMonitoredItemsRequest_Encoding_DefaultBinary):
self.logger.info("create monitored items request")
params = ua.CreateMonitoredItemsParameters.from_binary(body)
results = self.session.create_monitored_items(params)
response = ua.CreateMonitoredItemsResponse()
response.Results = results
self.logger.info("sending create monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.ModifyMonitoredItemsRequest_Encoding_DefaultBinary):
self.logger.info("modify monitored items request")
params = ua.ModifyMonitoredItemsParameters.from_binary(body)
results = self.session.modify_monitored_items(params)
response = ua.ModifyMonitoredItemsResponse()
response.Results = results
self.logger.info("sending modify monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.DeleteMonitoredItemsRequest_Encoding_DefaultBinary):
self.logger.info("delete monitored items request")
params = ua.DeleteMonitoredItemsParameters.from_binary(body)
results = self.session.delete_monitored_items(params)
response = ua.DeleteMonitoredItemsResponse()
response.Results = results
self.logger.info("sending delete monitored items response")
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.PublishRequest_Encoding_DefaultBinary):
self.logger.info("publish request")
if not self.session:
return False
params = ua.PublishParameters.from_binary(body)
data = PublishRequestData()
data.requesthdr = requesthdr
data.seqhdr = seqhdr
data.algohdr = algohdr
with self._datalock:
self._publishdata_queue.append(data) # will be used to send publish answers from server
self.session.publish(params.SubscriptionAcknowledgements)
self.logger.info("publish forward to server")
elif typeid == ua.NodeId(ua.ObjectIds.RepublishRequest_Encoding_DefaultBinary):
self.logger.info("re-publish request")
params = ua.RepublishParameters.from_binary(body)
msg = self.session.republish(params)
response = ua.RepublishResponse()
response.NotificationMessage = msg
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
elif typeid == ua.NodeId(ua.ObjectIds.CloseSecureChannelRequest_Encoding_DefaultBinary):
self.logger.info("close secure channel request")
response = ua.CloseSecureChannelResponse()
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
self.channel = None
return False
elif typeid == ua.NodeId(ua.ObjectIds.CallRequest_Encoding_DefaultBinary):
self.logger.info("call request")
params = ua.CallParameters.from_binary(body)
results = self.session.call(params.MethodsToCall)
response = ua.CallResponse()
response.Results = results
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, response)
else:
self.logger.warning("Uknown message received %s", typeid)
sf = ua.ServiceFault()
sf.ResponseHeader.ServiceResult = ua.StatusCode(ua.StatusCodes.BadNotImplemented)
self.send_response(requesthdr.RequestHandle, algohdr, seqhdr, sf)
return True