|
1
|
|
|
import time |
|
2
|
|
|
import logging |
|
3
|
|
|
from typing import Deque, Optional |
|
4
|
|
|
from collections import deque |
|
5
|
|
|
|
|
6
|
|
|
from asyncua import ua |
|
7
|
|
|
from ..ua.ua_binary import nodeid_from_binary, struct_from_binary, struct_to_binary, uatcp_to_binary |
|
8
|
|
|
from .internal_server import InternalServer, InternalSession |
|
9
|
|
|
from ..common.connection import SecureConnection |
|
10
|
|
|
from ..common.utils import ServiceError |
|
11
|
|
|
|
|
12
|
|
|
_logger = logging.getLogger(__name__) |
|
13
|
|
|
|
|
14
|
|
|
|
|
15
|
|
|
class PublishRequestData: |
|
16
|
|
|
|
|
17
|
|
|
def __init__(self, requesthdr=None, seqhdr=None): |
|
18
|
|
|
self.requesthdr = requesthdr |
|
19
|
|
|
self.seqhdr = seqhdr |
|
20
|
|
|
self.timestamp = time.time() |
|
21
|
|
|
|
|
22
|
|
|
|
|
23
|
|
|
class UaProcessor: |
|
24
|
|
|
""" |
|
25
|
|
|
Processor for OPC UA messages. Implements the OPC UA protocol for the server side. |
|
26
|
|
|
""" |
|
27
|
|
|
|
|
28
|
|
|
def __init__(self, internal_server: InternalServer, transport): |
|
29
|
|
|
self.iserver: InternalServer = internal_server |
|
30
|
|
|
self.name = transport.get_extra_info('peername') |
|
31
|
|
|
self.sockname = transport.get_extra_info('sockname') |
|
32
|
|
|
self.session: Optional[InternalSession] = None |
|
33
|
|
|
self._transport = transport |
|
34
|
|
|
# deque for Publish Requests |
|
35
|
|
|
self._publish_requests: Deque[PublishRequestData] = deque() |
|
36
|
|
|
# used when we need to wait for PublishRequest |
|
37
|
|
|
self._publish_results: Deque[ua.PublishResult] = deque() |
|
38
|
|
|
self._connection = SecureConnection(ua.SecurityPolicy()) |
|
39
|
|
|
|
|
40
|
|
|
def set_policies(self, policies): |
|
41
|
|
|
self._connection.set_policy_factories(policies) |
|
42
|
|
|
|
|
43
|
|
|
def send_response(self, requesthandle, seqhdr, response, msgtype=ua.MessageType.SecureMessage): |
|
44
|
|
|
response.ResponseHeader.RequestHandle = requesthandle |
|
45
|
|
|
data = self._connection.message_to_binary( |
|
46
|
|
|
struct_to_binary(response), message_type=msgtype, request_id=seqhdr.RequestId) |
|
47
|
|
|
self._transport.write(data) |
|
48
|
|
|
|
|
49
|
|
|
def open_secure_channel(self, algohdr, seqhdr, body): |
|
50
|
|
|
request = struct_from_binary(ua.OpenSecureChannelRequest, body) |
|
51
|
|
|
|
|
52
|
|
|
self._connection.select_policy( |
|
53
|
|
|
algohdr.SecurityPolicyURI, algohdr.SenderCertificate, request.Parameters.SecurityMode) |
|
54
|
|
|
|
|
55
|
|
|
channel = self._connection.open(request.Parameters, self.iserver) |
|
56
|
|
|
# send response |
|
57
|
|
|
response = ua.OpenSecureChannelResponse() |
|
58
|
|
|
response.Parameters = channel |
|
59
|
|
|
self.send_response(request.RequestHeader.RequestHandle, seqhdr, response, ua.MessageType.SecureOpen) |
|
60
|
|
|
|
|
61
|
|
|
async def forward_publish_response(self, result: ua.PublishResult): |
|
62
|
|
|
""" |
|
63
|
|
|
Try to send a `PublishResponse` with the given `PublishResult`. |
|
64
|
|
|
""" |
|
65
|
|
|
#_logger.info("forward publish response %s", result) |
|
66
|
|
|
while True: |
|
67
|
|
|
if not self._publish_requests: |
|
68
|
|
|
self._publish_results.append(result) |
|
69
|
|
|
_logger.info( |
|
70
|
|
|
"Server wants to send publish answer but no publish request is available," |
|
71
|
|
|
"enqueuing notification, length of result queue is %s", |
|
72
|
|
|
len(self._publish_results) |
|
73
|
|
|
) |
|
74
|
|
|
return |
|
75
|
|
|
# We pop left from the Publish Request deque (FIFO) |
|
76
|
|
|
requestdata = self._publish_requests.popleft() |
|
77
|
|
|
if (requestdata.requesthdr.TimeoutHint == 0 or |
|
78
|
|
|
requestdata.requesthdr.TimeoutHint != 0 and |
|
79
|
|
|
time.time() - requestdata.timestamp < requestdata.requesthdr.TimeoutHint / 1000): |
|
80
|
|
|
# Continue and use `requestdata` only if there was no timeout |
|
81
|
|
|
break |
|
82
|
|
|
response = ua.PublishResponse() |
|
83
|
|
|
response.Parameters = result |
|
84
|
|
|
self.send_response(requestdata.requesthdr.RequestHandle, requestdata.seqhdr, response) |
|
85
|
|
|
|
|
86
|
|
|
async def process(self, header, body): |
|
87
|
|
|
try: |
|
88
|
|
|
msg = self._connection.receive_from_header_and_body(header, body) |
|
89
|
|
|
except ua.uaerrors.BadUserAccessDenied as e: |
|
90
|
|
|
_logger.warning("Unauthenticated user attempted to connect") |
|
91
|
|
|
return False |
|
92
|
|
|
if isinstance(msg, ua.Message): |
|
93
|
|
|
if header.MessageType == ua.MessageType.SecureOpen: |
|
94
|
|
|
self.open_secure_channel(msg.SecurityHeader(), msg.SequenceHeader(), msg.body()) |
|
95
|
|
|
elif header.MessageType == ua.MessageType.SecureClose: |
|
96
|
|
|
self._connection.close() |
|
97
|
|
|
return False |
|
98
|
|
|
elif header.MessageType == ua.MessageType.SecureMessage: |
|
99
|
|
|
return await self.process_message(msg.SequenceHeader(), msg.body()) |
|
100
|
|
|
elif isinstance(msg, ua.Hello): |
|
101
|
|
|
ack = ua.Acknowledge() |
|
102
|
|
|
ack.ReceiveBufferSize = msg.ReceiveBufferSize |
|
103
|
|
|
ack.SendBufferSize = msg.SendBufferSize |
|
104
|
|
|
data = uatcp_to_binary(ua.MessageType.Acknowledge, ack) |
|
105
|
|
|
self._transport.write(data) |
|
106
|
|
|
elif isinstance(msg, ua.ErrorMessage): |
|
107
|
|
|
_logger.warning("Received an error message type") |
|
108
|
|
|
elif msg is None: |
|
109
|
|
|
pass # msg is a ChunkType.Intermediate of an ua.MessageType.SecureMessage |
|
110
|
|
|
else: |
|
111
|
|
|
_logger.warning("Unsupported message type: %s", header.MessageType) |
|
112
|
|
|
raise ServiceError(ua.StatusCodes.BadTcpMessageTypeInvalid) |
|
113
|
|
|
return True |
|
114
|
|
|
|
|
115
|
|
|
async def process_message(self, seqhdr, body): |
|
116
|
|
|
""" |
|
117
|
|
|
Process incoming messages. |
|
118
|
|
|
""" |
|
119
|
|
|
typeid = nodeid_from_binary(body) |
|
120
|
|
|
requesthdr = struct_from_binary(ua.RequestHeader, body) |
|
121
|
|
|
_logger.debug('process_message %r %r', typeid, requesthdr) |
|
122
|
|
|
try: |
|
123
|
|
|
return await self._process_message(typeid, requesthdr, seqhdr, body) |
|
124
|
|
|
except ServiceError as e: |
|
125
|
|
|
status = ua.StatusCode(e.code) |
|
126
|
|
|
response = ua.ServiceFault() |
|
127
|
|
|
response.ResponseHeader.ServiceResult = status |
|
128
|
|
|
_logger.error("sending service fault response: %s (%s)", status.doc, status.name) |
|
129
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
130
|
|
|
return True |
|
131
|
|
|
except ua.uaerrors.BadUserAccessDenied as e: |
|
132
|
|
|
user = self._connection.security_policy.user |
|
133
|
|
|
_logger.warning(f"{user} attempted to do something they are not permitted to do") |
|
134
|
|
|
response = ua.ServiceFault() |
|
135
|
|
|
response.ResponseHeader.ServiceResult = ua.StatusCode(ua.StatusCodes.BadUserAccessDenied) |
|
136
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
137
|
|
|
except Exception: |
|
138
|
|
|
_logger.exception('Error while processing message') |
|
139
|
|
|
response = ua.ServiceFault() |
|
140
|
|
|
response.ResponseHeader.ServiceResult = ua.StatusCode(ua.StatusCodes.BadInternalError) |
|
141
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
142
|
|
|
return True |
|
143
|
|
|
|
|
144
|
|
|
async def _process_message(self, typeid, requesthdr, seqhdr, body): |
|
145
|
|
|
user = self._connection.security_policy.user |
|
146
|
|
|
if user is None: |
|
147
|
|
|
extra_log_str = "(user unknown)" |
|
148
|
|
|
else: |
|
149
|
|
|
extra_log_str = "(user {})".format(user.name) |
|
150
|
|
|
if self._connection.security_policy.permissions.check_validity(user, typeid, body) is False: |
|
151
|
|
|
raise ua.uaerrors.BadUserAccessDenied |
|
152
|
|
|
|
|
153
|
|
|
if typeid == ua.NodeId(ua.ObjectIds.CreateSessionRequest_Encoding_DefaultBinary): |
|
154
|
|
|
_logger.info("Create session request {}".format(extra_log_str)) |
|
155
|
|
|
params = struct_from_binary(ua.CreateSessionParameters, body) |
|
156
|
|
|
# create the session on server |
|
157
|
|
|
self.session = self.iserver.create_session(self.name, user=user, external=True) |
|
158
|
|
|
# get a session creation result to send back |
|
159
|
|
|
sessiondata = await self.session.create_session(params, sockname=self.sockname) |
|
160
|
|
|
response = ua.CreateSessionResponse() |
|
161
|
|
|
response.Parameters = sessiondata |
|
162
|
|
|
response.Parameters.ServerCertificate = self._connection.security_policy.host_certificate |
|
163
|
|
|
if self._connection.security_policy.peer_certificate is None: |
|
164
|
|
|
data = params.ClientNonce |
|
165
|
|
|
else: |
|
166
|
|
|
data = self._connection.security_policy.peer_certificate + params.ClientNonce |
|
167
|
|
|
response.Parameters.ServerSignature.Signature = \ |
|
168
|
|
|
self._connection.security_policy.asymmetric_cryptography.signature(data) |
|
169
|
|
|
response.Parameters.ServerSignature.Algorithm = self._connection.security_policy.AsymmetricSignatureURI |
|
170
|
|
|
#_logger.info("sending create session response") |
|
171
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
172
|
|
|
|
|
173
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.CloseSessionRequest_Encoding_DefaultBinary): |
|
174
|
|
|
_logger.info("Close session request {}".format(extra_log_str)) |
|
175
|
|
|
if self.session: |
|
176
|
|
|
deletesubs = ua.ua_binary.Primitives.Boolean.unpack(body) |
|
177
|
|
|
await self.session.close_session(deletesubs) |
|
178
|
|
|
else: |
|
179
|
|
|
_logger.info("Request to close non-existing session {}".format(extra_log_str)) |
|
180
|
|
|
|
|
181
|
|
|
response = ua.CloseSessionResponse() |
|
182
|
|
|
_logger.info("sending close session response {}".format(extra_log_str)) |
|
183
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
184
|
|
|
|
|
185
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.ActivateSessionRequest_Encoding_DefaultBinary): |
|
186
|
|
|
_logger.info("Activate session request {}".format(extra_log_str)) |
|
187
|
|
|
params = struct_from_binary(ua.ActivateSessionParameters, body) |
|
188
|
|
|
if not self.session: |
|
189
|
|
|
_logger.info("request to activate non-existing session {}".format(extra_log_str)) |
|
190
|
|
|
raise ServiceError(ua.StatusCodes.BadSessionIdInvalid) |
|
191
|
|
|
if self._connection.security_policy.host_certificate is None: |
|
192
|
|
|
data = self.session.nonce |
|
193
|
|
|
else: |
|
194
|
|
|
data = self._connection.security_policy.host_certificate + self.session.nonce |
|
195
|
|
|
self._connection.security_policy.asymmetric_cryptography.verify(data, params.ClientSignature.Signature) |
|
196
|
|
|
result = self.session.activate_session(params) |
|
197
|
|
|
response = ua.ActivateSessionResponse() |
|
198
|
|
|
response.Parameters = result |
|
199
|
|
|
#_logger.info("sending read response") |
|
200
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
201
|
|
|
|
|
202
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.ReadRequest_Encoding_DefaultBinary): |
|
203
|
|
|
_logger.info("Read request {}".format(extra_log_str)) |
|
204
|
|
|
params = struct_from_binary(ua.ReadParameters, body) |
|
205
|
|
|
results = await self.session.read(params) |
|
206
|
|
|
response = ua.ReadResponse() |
|
207
|
|
|
response.Results = results |
|
208
|
|
|
#_logger.info("sending read response") |
|
209
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
210
|
|
|
|
|
211
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.WriteRequest_Encoding_DefaultBinary): |
|
212
|
|
|
_logger.info("Write request {}".format(extra_log_str)) |
|
213
|
|
|
params = struct_from_binary(ua.WriteParameters, body) |
|
214
|
|
|
results = await self.session.write(params) |
|
215
|
|
|
response = ua.WriteResponse() |
|
216
|
|
|
response.Results = results |
|
217
|
|
|
#_logger.info("sending write response") |
|
218
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
219
|
|
|
|
|
220
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.BrowseRequest_Encoding_DefaultBinary): |
|
221
|
|
|
_logger.info("Browse request {}".format(extra_log_str)) |
|
222
|
|
|
params = struct_from_binary(ua.BrowseParameters, body) |
|
223
|
|
|
results = await self.session.browse(params) |
|
224
|
|
|
response = ua.BrowseResponse() |
|
225
|
|
|
response.Results = results |
|
226
|
|
|
#_logger.info("sending browse response") |
|
227
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
228
|
|
|
|
|
229
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.GetEndpointsRequest_Encoding_DefaultBinary): |
|
230
|
|
|
_logger.info("get endpoints request {}".format(extra_log_str)) |
|
231
|
|
|
params = struct_from_binary(ua.GetEndpointsParameters, body) |
|
232
|
|
|
endpoints = await self.iserver.get_endpoints(params, sockname=self.sockname) |
|
233
|
|
|
response = ua.GetEndpointsResponse() |
|
234
|
|
|
response.Endpoints = endpoints |
|
235
|
|
|
#_logger.info("sending get endpoints response") |
|
236
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
237
|
|
|
|
|
238
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.FindServersRequest_Encoding_DefaultBinary): |
|
239
|
|
|
_logger.info("find servers request {}".format(extra_log_str)) |
|
240
|
|
|
params = struct_from_binary(ua.FindServersParameters, body) |
|
241
|
|
|
servers = self.iserver.find_servers(params) |
|
242
|
|
|
response = ua.FindServersResponse() |
|
243
|
|
|
response.Servers = servers |
|
244
|
|
|
#_logger.info("sending find servers response") |
|
245
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
246
|
|
|
|
|
247
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.RegisterServerRequest_Encoding_DefaultBinary): |
|
248
|
|
|
_logger.info("register server request {}".format(extra_log_str)) |
|
249
|
|
|
serv = struct_from_binary(ua.RegisteredServer, body) |
|
250
|
|
|
self.iserver.register_server(serv) |
|
251
|
|
|
response = ua.RegisterServerResponse() |
|
252
|
|
|
#_logger.info("sending register server response") |
|
253
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
254
|
|
|
|
|
255
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.RegisterServer2Request_Encoding_DefaultBinary): |
|
256
|
|
|
_logger.info("register server 2 request {}".format(extra_log_str)) |
|
257
|
|
|
params = struct_from_binary(ua.RegisterServer2Parameters, body) |
|
258
|
|
|
results = self.iserver.register_server2(params) |
|
259
|
|
|
response = ua.RegisterServer2Response() |
|
260
|
|
|
response.ConfigurationResults = results |
|
261
|
|
|
#_logger.info("sending register server 2 response") |
|
262
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
263
|
|
|
|
|
264
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.TranslateBrowsePathsToNodeIdsRequest_Encoding_DefaultBinary): |
|
265
|
|
|
_logger.info("translate browsepaths to nodeids request {}".format(extra_log_str)) |
|
266
|
|
|
params = struct_from_binary(ua.TranslateBrowsePathsToNodeIdsParameters, body) |
|
267
|
|
|
paths = await self.session.translate_browsepaths_to_nodeids(params.BrowsePaths) |
|
268
|
|
|
response = ua.TranslateBrowsePathsToNodeIdsResponse() |
|
269
|
|
|
response.Results = paths |
|
270
|
|
|
#_logger.info("sending translate browsepaths to nodeids response") |
|
271
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
272
|
|
|
|
|
273
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.AddNodesRequest_Encoding_DefaultBinary): |
|
274
|
|
|
_logger.info("add nodes request {}".format(extra_log_str)) |
|
275
|
|
|
params = struct_from_binary(ua.AddNodesParameters, body) |
|
276
|
|
|
results = await self.session.add_nodes(params.NodesToAdd) |
|
277
|
|
|
response = ua.AddNodesResponse() |
|
278
|
|
|
response.Results = results |
|
279
|
|
|
#_logger.info("sending add node response") |
|
280
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
281
|
|
|
|
|
282
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.DeleteNodesRequest_Encoding_DefaultBinary): |
|
283
|
|
|
_logger.info("delete nodes request {}".format(extra_log_str)) |
|
284
|
|
|
params = struct_from_binary(ua.DeleteNodesParameters, body) |
|
285
|
|
|
results = await self.session.delete_nodes(params) |
|
286
|
|
|
response = ua.DeleteNodesResponse() |
|
287
|
|
|
response.Results = results |
|
288
|
|
|
#_logger.info("sending delete node response") |
|
289
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
290
|
|
|
|
|
291
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.AddReferencesRequest_Encoding_DefaultBinary): |
|
292
|
|
|
_logger.info("add references request {}".format(extra_log_str)) |
|
293
|
|
|
params = struct_from_binary(ua.AddReferencesParameters, body) |
|
294
|
|
|
results = await self.session.add_references(params.ReferencesToAdd) |
|
295
|
|
|
response = ua.AddReferencesResponse() |
|
296
|
|
|
response.Results = results |
|
297
|
|
|
#_logger.info("sending add references response") |
|
298
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
299
|
|
|
|
|
300
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.DeleteReferencesRequest_Encoding_DefaultBinary): |
|
301
|
|
|
_logger.info("delete references request {}".format(extra_log_str)) |
|
302
|
|
|
params = struct_from_binary(ua.DeleteReferencesParameters, body) |
|
303
|
|
|
results = await self.session.delete_references(params.ReferencesToDelete) |
|
304
|
|
|
response = ua.DeleteReferencesResponse() |
|
305
|
|
|
response.Parameters.Results = results |
|
306
|
|
|
#_logger.info("sending delete references response") |
|
307
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
308
|
|
|
|
|
309
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.CreateSubscriptionRequest_Encoding_DefaultBinary): |
|
310
|
|
|
_logger.info("create subscription request {}".format(extra_log_str)) |
|
311
|
|
|
params = struct_from_binary(ua.CreateSubscriptionParameters, body) |
|
312
|
|
|
result = await self.session.create_subscription(params, callback=self.forward_publish_response) |
|
313
|
|
|
response = ua.CreateSubscriptionResponse() |
|
314
|
|
|
response.Parameters = result |
|
315
|
|
|
#_logger.info("sending create subscription response") |
|
316
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
317
|
|
|
|
|
318
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.DeleteSubscriptionsRequest_Encoding_DefaultBinary): |
|
319
|
|
|
_logger.info("delete subscriptions request {}".format(extra_log_str)) |
|
320
|
|
|
params = struct_from_binary(ua.DeleteSubscriptionsParameters, body) |
|
321
|
|
|
results = await self.session.delete_subscriptions(params.SubscriptionIds) |
|
322
|
|
|
response = ua.DeleteSubscriptionsResponse() |
|
323
|
|
|
response.Results = results |
|
324
|
|
|
#_logger.info("sending delete subscription response") |
|
325
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
326
|
|
|
|
|
327
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.CreateMonitoredItemsRequest_Encoding_DefaultBinary): |
|
328
|
|
|
_logger.info("create monitored items request {}".format(extra_log_str)) |
|
329
|
|
|
params = struct_from_binary(ua.CreateMonitoredItemsParameters, body) |
|
330
|
|
|
results = await self.session.create_monitored_items(params) |
|
331
|
|
|
response = ua.CreateMonitoredItemsResponse() |
|
332
|
|
|
response.Results = results |
|
333
|
|
|
#_logger.info("sending create monitored items response") |
|
334
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
335
|
|
|
|
|
336
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.ModifyMonitoredItemsRequest_Encoding_DefaultBinary): |
|
337
|
|
|
_logger.info("modify monitored items request {}".format(extra_log_str)) |
|
338
|
|
|
params = struct_from_binary(ua.ModifyMonitoredItemsParameters, body) |
|
339
|
|
|
results = await self.session.modify_monitored_items(params) |
|
340
|
|
|
response = ua.ModifyMonitoredItemsResponse() |
|
341
|
|
|
response.Results = results |
|
342
|
|
|
#_logger.info("sending modify monitored items response") |
|
343
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
344
|
|
|
|
|
345
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.DeleteMonitoredItemsRequest_Encoding_DefaultBinary): |
|
346
|
|
|
_logger.info("delete monitored items request {}".format(extra_log_str)) |
|
347
|
|
|
params = struct_from_binary(ua.DeleteMonitoredItemsParameters, body) |
|
348
|
|
|
results = await self.session.delete_monitored_items(params) |
|
349
|
|
|
response = ua.DeleteMonitoredItemsResponse() |
|
350
|
|
|
response.Results = results |
|
351
|
|
|
#_logger.info("sending delete monitored items response") |
|
352
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
353
|
|
|
|
|
354
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.HistoryReadRequest_Encoding_DefaultBinary): |
|
355
|
|
|
_logger.info("history read request {}".format(extra_log_str)) |
|
356
|
|
|
params = struct_from_binary(ua.HistoryReadParameters, body) |
|
357
|
|
|
results = await self.session.history_read(params) |
|
358
|
|
|
response = ua.HistoryReadResponse() |
|
359
|
|
|
response.Results = results |
|
360
|
|
|
#_logger.info("sending history read response") |
|
361
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
362
|
|
|
|
|
363
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.RegisterNodesRequest_Encoding_DefaultBinary): |
|
364
|
|
|
_logger.info("register nodes request {}".format(extra_log_str)) |
|
365
|
|
|
params = struct_from_binary(ua.RegisterNodesParameters, body) |
|
366
|
|
|
_logger.info("Node registration not implemented") |
|
367
|
|
|
response = ua.RegisterNodesResponse() |
|
368
|
|
|
response.Parameters.RegisteredNodeIds = params.NodesToRegister |
|
369
|
|
|
#_logger.info("sending register nodes response") |
|
370
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
371
|
|
|
|
|
372
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.UnregisterNodesRequest_Encoding_DefaultBinary): |
|
373
|
|
|
_logger.info("unregister nodes request {}".format(extra_log_str)) |
|
374
|
|
|
params = struct_from_binary(ua.UnregisterNodesParameters, body) |
|
375
|
|
|
response = ua.UnregisterNodesResponse() |
|
376
|
|
|
#_logger.info("sending unregister nodes response") |
|
377
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
378
|
|
|
|
|
379
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.PublishRequest_Encoding_DefaultBinary): |
|
380
|
|
|
_logger.debug("publish request {}".format(extra_log_str)) |
|
381
|
|
|
if not self.session: |
|
382
|
|
|
return False |
|
383
|
|
|
params = struct_from_binary(ua.PublishParameters, body) |
|
384
|
|
|
data = PublishRequestData(requesthdr=requesthdr, seqhdr=seqhdr) |
|
385
|
|
|
# Store the Publish Request (will be used to send publish answers from server) |
|
386
|
|
|
self._publish_requests.append(data) |
|
387
|
|
|
# If there is an enqueued result forward it immediately |
|
388
|
|
|
while self._publish_results: |
|
389
|
|
|
result = self._publish_results.popleft() |
|
390
|
|
|
if result.SubscriptionId not in self.session.subscription_service.active_subscription_ids: |
|
391
|
|
|
# Discard the result if the subscription is no longer active |
|
392
|
|
|
continue |
|
393
|
|
|
await self.forward_publish_response(result) |
|
394
|
|
|
break |
|
395
|
|
|
self.session.publish(params.SubscriptionAcknowledgements) |
|
396
|
|
|
#_logger.debug("publish forward to server") |
|
397
|
|
|
|
|
398
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.RepublishRequest_Encoding_DefaultBinary): |
|
399
|
|
|
_logger.info("re-publish request {}".format(extra_log_str)) |
|
400
|
|
|
params = struct_from_binary(ua.RepublishParameters, body) |
|
401
|
|
|
msg = self.session.republish(params) |
|
402
|
|
|
response = ua.RepublishResponse() |
|
403
|
|
|
response.NotificationMessage = msg |
|
404
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
405
|
|
|
|
|
406
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.CloseSecureChannelRequest_Encoding_DefaultBinary): |
|
407
|
|
|
_logger.info("close secure channel request {}".format(extra_log_str)) |
|
408
|
|
|
self._connection.close() |
|
409
|
|
|
response = ua.CloseSecureChannelResponse() |
|
410
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
411
|
|
|
return False |
|
412
|
|
|
|
|
413
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.CallRequest_Encoding_DefaultBinary): |
|
414
|
|
|
_logger.info("call request {}".format(extra_log_str)) |
|
415
|
|
|
params = struct_from_binary(ua.CallParameters, body) |
|
416
|
|
|
results = await self.session.call(params.MethodsToCall) |
|
417
|
|
|
response = ua.CallResponse() |
|
418
|
|
|
response.Results = results |
|
419
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
420
|
|
|
|
|
421
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.SetMonitoringModeRequest_Encoding_DefaultBinary): |
|
422
|
|
|
_logger.info("set monitoring mode request {}".format(extra_log_str)) |
|
423
|
|
|
params = struct_from_binary(ua.SetMonitoringModeParameters, body) |
|
424
|
|
|
# FIXME: Implement SetMonitoringMode |
|
425
|
|
|
# For now send dummy results to keep clients happy |
|
426
|
|
|
response = ua.SetMonitoringModeResponse() |
|
427
|
|
|
results = ua.SetMonitoringModeResult() |
|
428
|
|
|
ids = params.MonitoredItemIds |
|
429
|
|
|
statuses = [ua.StatusCode(ua.StatusCodes.Good) for node_id in ids] |
|
430
|
|
|
results.Results = statuses |
|
431
|
|
|
response.Parameters = results |
|
432
|
|
|
_logger.info("sending set monitoring mode response") |
|
433
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
434
|
|
|
|
|
435
|
|
|
elif typeid == ua.NodeId(ua.ObjectIds.SetPublishingModeRequest_Encoding_DefaultBinary): |
|
436
|
|
|
_logger.info("set publishing mode request {}".format(extra_log_str)) |
|
437
|
|
|
params = struct_from_binary(ua.SetPublishingModeParameters, body) |
|
438
|
|
|
# FIXME: Implement SetPublishingMode |
|
439
|
|
|
# For now send dummy results to keep clients happy |
|
440
|
|
|
response = ua.SetPublishingModeResponse() |
|
441
|
|
|
results = ua.SetPublishingModeResult() |
|
442
|
|
|
ids = params.SubscriptionIds |
|
443
|
|
|
statuses = [ua.StatusCode(ua.StatusCodes.Good) for node_id in ids] |
|
444
|
|
|
results.Results = statuses |
|
445
|
|
|
response.Parameters = results |
|
446
|
|
|
_logger.info("sending set publishing mode response") |
|
447
|
|
|
self.send_response(requesthdr.RequestHandle, seqhdr, response) |
|
448
|
|
|
|
|
449
|
|
|
else: |
|
450
|
|
|
_logger.warning("Unknown message received %s {}".format(extra_log_str), typeid) |
|
451
|
|
|
raise ServiceError(ua.StatusCodes.BadServiceUnsupported) |
|
452
|
|
|
|
|
453
|
|
|
return True |
|
454
|
|
|
|
|
455
|
|
|
async def close(self): |
|
456
|
|
|
""" |
|
457
|
|
|
to be called when client has disconnected to ensure we really close |
|
458
|
|
|
everything we should |
|
459
|
|
|
""" |
|
460
|
|
|
_logger.info("Cleanup client connection: %s", self.name) |
|
461
|
|
|
if self.session: |
|
462
|
|
|
await self.session.close_session(True) |
|
463
|
|
|
|
FreeOpcUa /
opcua-asyncio
