static void processMSG(UA_Connection *connection, UA_Server *server, const UA_ByteString *msg, size_t *pos) {
/* Read in the securechannel */
UA_UInt32 secureChannelId;
UA_StatusCode retval = UA_UInt32_decodeBinary(msg, pos, &secureChannelId);
if(retval != UA_STATUSCODE_GOOD)
return;
/* the anonymous channel is used e.g. to allow getEndpoints without a channel */
UA_SecureChannel *clientChannel = connection->channel;
UA_SecureChannel anonymousChannel;
if(!clientChannel) {
UA_SecureChannel_init(&anonymousChannel);
anonymousChannel.connection = connection;
clientChannel = &anonymousChannel;
#ifdef EXTENSION_STATELESS
anonymousChannel.session = &anonymousSession;
#endif
}
/* Read the security header */
UA_UInt32 tokenId;
UA_SequenceHeader sequenceHeader;
retval = UA_UInt32_decodeBinary(msg, pos, &tokenId);
retval |= UA_SequenceHeader_decodeBinary(msg, pos, &sequenceHeader);
if(retval != UA_STATUSCODE_GOOD)
return;
/* Read the request type */
UA_NodeId requestType;
if(UA_NodeId_decodeBinary(msg, pos, &requestType) != UA_STATUSCODE_GOOD)
return;
if(requestType.identifierType != UA_NODEIDTYPE_NUMERIC) {
UA_NodeId_deleteMembers(&requestType);
return;
}
switch(requestType.identifier.numeric - UA_ENCODINGOFFSET_BINARY) {
case UA_NS0ID_GETENDPOINTSREQUEST: {
UA_GetEndpointsRequest p;
UA_GetEndpointsResponse r;
if(UA_GetEndpointsRequest_decodeBinary(msg, pos, &p))
return;
UA_GetEndpointsResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_GetEndpoints(server, &p, &r);
UA_GetEndpointsRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_GETENDPOINTSRESPONSE]);
UA_GetEndpointsResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_FINDSERVERSREQUEST: {
UA_FindServersRequest p;
UA_FindServersResponse r;
if(UA_FindServersRequest_decodeBinary(msg, pos, &p))
return;
UA_FindServersResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_FindServers(server, &p, &r);
UA_FindServersRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_FINDSERVERSRESPONSE]);
UA_FindServersResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_CREATESESSIONREQUEST: {
UA_CreateSessionRequest p;
UA_CreateSessionResponse r;
if(UA_CreateSessionRequest_decodeBinary(msg, pos, &p))
return;
UA_CreateSessionResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_CreateSession(server, clientChannel, &p, &r);
UA_CreateSessionRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_CREATESESSIONRESPONSE]);
UA_CreateSessionResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_ACTIVATESESSIONREQUEST: {
UA_ActivateSessionRequest p;
UA_ActivateSessionResponse r;
if(UA_ActivateSessionRequest_decodeBinary(msg, pos, &p))
return;
UA_ActivateSessionResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_ActivateSession(server, clientChannel, &p, &r);
UA_ActivateSessionRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_ACTIVATESESSIONRESPONSE]);
UA_ActivateSessionResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_CLOSESESSIONREQUEST:
INVOKE_SERVICE(CloseSession, UA_TYPES_CLOSESESSIONRESPONSE);
break;
case UA_NS0ID_READREQUEST:
INVOKE_SERVICE(Read, UA_TYPES_READRESPONSE);
break;
case UA_NS0ID_WRITEREQUEST:
INVOKE_SERVICE(Write, UA_TYPES_WRITERESPONSE);
break;
case UA_NS0ID_BROWSEREQUEST:
INVOKE_SERVICE(Browse, UA_TYPES_BROWSERESPONSE);
break;
case UA_NS0ID_BROWSENEXTREQUEST:
INVOKE_SERVICE(BrowseNext, UA_TYPES_BROWSENEXTRESPONSE);
break;
case UA_NS0ID_ADDREFERENCESREQUEST:
INVOKE_SERVICE(AddReferences, UA_TYPES_ADDREFERENCESRESPONSE);
break;
case UA_NS0ID_REGISTERNODESREQUEST:
INVOKE_SERVICE(RegisterNodes, UA_TYPES_REGISTERNODESRESPONSE);
break;
case UA_NS0ID_UNREGISTERNODESREQUEST:
INVOKE_SERVICE(UnregisterNodes, UA_TYPES_UNREGISTERNODESRESPONSE);
break;
case UA_NS0ID_TRANSLATEBROWSEPATHSTONODEIDSREQUEST:
INVOKE_SERVICE(TranslateBrowsePathsToNodeIds, UA_TYPES_TRANSLATEBROWSEPATHSTONODEIDSRESPONSE);
break;
default: {
if(requestType.namespaceIndex == 0 && requestType.identifier.numeric==787)
UA_LOG_INFO(server->logger, UA_LOGCATEGORY_COMMUNICATION,
"Client requested a subscription that are not supported, the message will be skipped");
else
UA_LOG_INFO(server->logger, UA_LOGCATEGORY_COMMUNICATION, "Unknown request: NodeId(ns=%d, i=%d)",
requestType.namespaceIndex, requestType.identifier.numeric);
UA_RequestHeader p;
UA_ResponseHeader r;
if(UA_RequestHeader_decodeBinary(msg, pos, &p) != UA_STATUSCODE_GOOD)
return;
UA_ResponseHeader_init(&r);
init_response_header(&p, &r);
r.serviceResult = UA_STATUSCODE_BADSERVICEUNSUPPORTED;
#ifdef EXTENSION_STATELESS
if(retval != UA_STATUSCODE_GOOD)
r.serviceResult = retval;
#endif
UA_RequestHeader_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId,
&r, &UA_TYPES[UA_TYPES_RESPONSEHEADER]);
break;
}
}
}
static void
processMSG(UA_Server *server, UA_SecureChannel *channel,
UA_UInt32 requestId, const UA_ByteString *msg) {
/* At 0, the nodeid starts... */
size_t ppos = 0;
size_t *offset = &ppos;
/* Decode the nodeid */
UA_NodeId requestTypeId;
UA_StatusCode retval = UA_NodeId_decodeBinary(msg, offset, &requestTypeId);
if(retval != UA_STATUSCODE_GOOD)
return;
if(requestTypeId.identifierType != UA_NODEIDTYPE_NUMERIC)
UA_NodeId_deleteMembers(&requestTypeId); /* leads to badserviceunsupported */
/* Store the start-position of the request */
size_t requestPos = *offset;
/* Get the service pointers */
UA_Service service = NULL;
const UA_DataType *requestType = NULL;
const UA_DataType *responseType = NULL;
UA_Boolean sessionRequired = true;
getServicePointers(requestTypeId.identifier.numeric, &requestType,
&responseType, &service, &sessionRequired);
if(!requestType) {
if(requestTypeId.identifier.numeric == 787) {
UA_LOG_INFO_CHANNEL(server->config.logger, channel,
"Client requested a subscription, " \
"but those are not enabled in the build");
} else {
UA_LOG_INFO_CHANNEL(server->config.logger, channel, "Unknown request %i",
requestTypeId.identifier.numeric);
}
sendError(channel, msg, requestPos, &UA_TYPES[UA_TYPES_SERVICEFAULT],
requestId, UA_STATUSCODE_BADSERVICEUNSUPPORTED);
return;
}
UA_assert(responseType);
#ifdef UA_ENABLE_NONSTANDARD_STATELESS
/* Stateless extension: Sessions are optional */
sessionRequired = false;
#endif
/* Decode the request */
void *request = UA_alloca(requestType->memSize);
UA_RequestHeader *requestHeader = (UA_RequestHeader*)request;
retval = UA_decodeBinary(msg, offset, request, requestType);
if(retval != UA_STATUSCODE_GOOD) {
UA_LOG_DEBUG_CHANNEL(server->config.logger, channel, "Could not decode the request");
sendError(channel, msg, requestPos, responseType, requestId, retval);
return;
}
/* Prepare the respone */
void *response = UA_alloca(responseType->memSize);
UA_init(response, responseType);
UA_Session *session = NULL; /* must be initialized before goto send_response */
/* CreateSession doesn't need a session */
if(requestType == &UA_TYPES[UA_TYPES_CREATESESSIONREQUEST]) {
Service_CreateSession(server, channel, request, response);
goto send_response;
}
/* Find the matching session */
session = UA_SecureChannel_getSession(channel, &requestHeader->authenticationToken);
if(!session)
session = UA_SessionManager_getSession(&server->sessionManager,
&requestHeader->authenticationToken);
if(requestType == &UA_TYPES[UA_TYPES_ACTIVATESESSIONREQUEST]) {
if(!session) {
UA_LOG_DEBUG_CHANNEL(server->config.logger, channel,
"Trying to activate a session that is " \
"not known in the server");
sendError(channel, msg, requestPos, responseType,
requestId, UA_STATUSCODE_BADSESSIONIDINVALID);
UA_deleteMembers(request, requestType);
return;
}
Service_ActivateSession(server, channel, session, request, response);
goto send_response;
}
/* Set an anonymous, inactive session for services that need no session */
UA_Session anonymousSession;
if(!session) {
if(sessionRequired) {
UA_LOG_INFO_CHANNEL(server->config.logger, channel,
"Service request %i without a valid session",
requestType->binaryEncodingId);
sendError(channel, msg, requestPos, responseType,
requestId, UA_STATUSCODE_BADSESSIONIDINVALID);
UA_deleteMembers(request, requestType);
return;
}
UA_Session_init(&anonymousSession);
anonymousSession.sessionId = UA_NODEID_GUID(0, UA_GUID_NULL);
anonymousSession.channel = channel;
session = &anonymousSession;
}
/* Trying to use a non-activated session? */
if(sessionRequired && !session->activated) {
UA_LOG_INFO_SESSION(server->config.logger, session,
"Calling service %i on a non-activated session",
requestType->binaryEncodingId);
sendError(channel, msg, requestPos, responseType,
requestId, UA_STATUSCODE_BADSESSIONNOTACTIVATED);
UA_SessionManager_removeSession(&server->sessionManager,
&session->authenticationToken);
UA_deleteMembers(request, requestType);
return;
}
/* The session is bound to another channel */
if(session->channel != channel) {
UA_LOG_DEBUG_CHANNEL(server->config.logger, channel,
"Client tries to use an obsolete securechannel");
sendError(channel, msg, requestPos, responseType,
requestId, UA_STATUSCODE_BADSECURECHANNELIDINVALID);
UA_deleteMembers(request, requestType);
return;
}
/* Update the session lifetime */
UA_Session_updateLifetime(session);
#ifdef UA_ENABLE_SUBSCRIPTIONS
/* The publish request is not answered immediately */
if(requestType == &UA_TYPES[UA_TYPES_PUBLISHREQUEST]) {
Service_Publish(server, session, request, requestId);
UA_deleteMembers(request, requestType);
return;
}
#endif
/* Call the service */
UA_assert(service); /* For all services besides publish, the service pointer is non-NULL*/
service(server, session, request, response);
send_response:
/* Send the response */
((UA_ResponseHeader*)response)->requestHandle = requestHeader->requestHandle;
((UA_ResponseHeader*)response)->timestamp = UA_DateTime_now();
retval = UA_SecureChannel_sendBinaryMessage(channel, requestId, response, responseType);
if(retval != UA_STATUSCODE_GOOD)
UA_LOG_INFO_CHANNEL(server->config.logger, channel, "Could not send the message over "
"the SecureChannel with error code 0x%08x", retval);
/* Clean up */
UA_deleteMembers(request, requestType);
UA_deleteMembers(response, responseType);
}
static void processMSG(UA_Connection *connection, UA_Server *server, const UA_ByteString *msg, size_t *pos) {
/* Read in the securechannel */
UA_UInt32 secureChannelId;
UA_StatusCode retval = UA_UInt32_decodeBinary(msg, pos, &secureChannelId);
if(retval != UA_STATUSCODE_GOOD)
return;
/* the anonymous channel is used e.g. to allow getEndpoints without a channel */
UA_SecureChannel *clientChannel = connection->channel;
UA_SecureChannel anonymousChannel;
if(!clientChannel) {
UA_SecureChannel_init(&anonymousChannel);
anonymousChannel.connection = connection;
clientChannel = &anonymousChannel;
}
/* Read the security header */
UA_UInt32 tokenId = 0;
UA_SequenceHeader sequenceHeader;
retval = UA_UInt32_decodeBinary(msg, pos, &tokenId);
retval |= UA_SequenceHeader_decodeBinary(msg, pos, &sequenceHeader);
#ifndef EXTENSION_STATELESS
if(retval != UA_STATUSCODE_GOOD || tokenId == 0) // 0 is invalid
return;
#else
if(retval != UA_STATUSCODE_GOOD)
return;
#endif
if(clientChannel != &anonymousChannel && tokenId != clientChannel->securityToken.tokenId) {
if(tokenId != clientChannel->nextSecurityToken.tokenId) {
/* close the securechannel but keep the connection open */
UA_LOG_INFO(server->logger, UA_LOGCATEGORY_SECURECHANNEL,
"Request with a wrong security token. Closing the SecureChannel %i.",
clientChannel->securityToken.channelId);
Service_CloseSecureChannel(server, clientChannel->securityToken.channelId);
return;
}
UA_SecureChannel_revolveTokens(clientChannel);
}
/* Read the request type */
UA_NodeId requestType;
if(UA_NodeId_decodeBinary(msg, pos, &requestType) != UA_STATUSCODE_GOOD)
return;
if(requestType.identifierType != UA_NODEIDTYPE_NUMERIC) {
UA_NodeId_deleteMembers(&requestType);
return;
}
switch(requestType.identifier.numeric - UA_ENCODINGOFFSET_BINARY) {
case UA_NS0ID_GETENDPOINTSREQUEST: {
if(clientChannel == &anonymousChannel)
UA_LOG_DEBUG(server->logger, UA_LOGCATEGORY_NETWORK, "Processing GetEndpointsRequest on Connection %i",
connection->sockfd);
else
UA_LOG_DEBUG(server->logger, UA_LOGCATEGORY_SECURECHANNEL, "Processing GetEndpointsRequest on SecureChannel %i",
clientChannel->securityToken.channelId);
UA_GetEndpointsRequest p;
UA_GetEndpointsResponse r;
if(UA_GetEndpointsRequest_decodeBinary(msg, pos, &p))
return;
UA_GetEndpointsResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_GetEndpoints(server, &p, &r);
UA_GetEndpointsRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_GETENDPOINTSRESPONSE]);
UA_GetEndpointsResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_FINDSERVERSREQUEST: {
if(clientChannel == &anonymousChannel)
UA_LOG_DEBUG(server->logger, UA_LOGCATEGORY_NETWORK, "Processing FindServerRequest on Connection %i",
connection->sockfd);
else
UA_LOG_DEBUG(server->logger, UA_LOGCATEGORY_SECURECHANNEL, "Processing FindServerRequest on SecureChannel %i",
clientChannel->securityToken.channelId);
UA_FindServersRequest p;
UA_FindServersResponse r;
if(UA_FindServersRequest_decodeBinary(msg, pos, &p))
return;
UA_FindServersResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_FindServers(server, &p, &r);
UA_FindServersRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_FINDSERVERSRESPONSE]);
UA_FindServersResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_CREATESESSIONREQUEST: {
UA_CreateSessionRequest p;
UA_CreateSessionResponse r;
if(UA_CreateSessionRequest_decodeBinary(msg, pos, &p))
return;
UA_CreateSessionResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_CreateSession(server, clientChannel, &p, &r);
UA_CreateSessionRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_CREATESESSIONRESPONSE]);
UA_CreateSessionResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_ACTIVATESESSIONREQUEST: {
UA_ActivateSessionRequest p;
UA_ActivateSessionResponse r;
if(UA_ActivateSessionRequest_decodeBinary(msg, pos, &p))
return;
UA_ActivateSessionResponse_init(&r);
init_response_header(&p.requestHeader, &r.responseHeader);
Service_ActivateSession(server, clientChannel, &p, &r);
UA_ActivateSessionRequest_deleteMembers(&p);
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_ACTIVATESESSIONRESPONSE]);
UA_ActivateSessionResponse_deleteMembers(&r);
break;
}
case UA_NS0ID_CLOSESESSIONREQUEST:
INVOKE_SERVICE(CloseSession, UA_TYPES_CLOSESESSIONRESPONSE);
break;
case UA_NS0ID_READREQUEST:
INVOKE_SERVICE(Read, UA_TYPES_READRESPONSE);
break;
case UA_NS0ID_WRITEREQUEST:
INVOKE_SERVICE(Write, UA_TYPES_WRITERESPONSE);
break;
case UA_NS0ID_BROWSEREQUEST:
INVOKE_SERVICE(Browse, UA_TYPES_BROWSERESPONSE);
break;
case UA_NS0ID_BROWSENEXTREQUEST:
INVOKE_SERVICE(BrowseNext, UA_TYPES_BROWSENEXTRESPONSE);
break;
case UA_NS0ID_REGISTERNODESREQUEST:
INVOKE_SERVICE(RegisterNodes, UA_TYPES_REGISTERNODESRESPONSE);
break;
case UA_NS0ID_UNREGISTERNODESREQUEST:
INVOKE_SERVICE(UnregisterNodes, UA_TYPES_UNREGISTERNODESRESPONSE);
break;
case UA_NS0ID_TRANSLATEBROWSEPATHSTONODEIDSREQUEST:
INVOKE_SERVICE(TranslateBrowsePathsToNodeIds, UA_TYPES_TRANSLATEBROWSEPATHSTONODEIDSRESPONSE);
break;
#ifdef ENABLE_SUBSCRIPTIONS
case UA_NS0ID_CREATESUBSCRIPTIONREQUEST:
INVOKE_SERVICE(CreateSubscription, UA_TYPES_CREATESUBSCRIPTIONRESPONSE);
break;
case UA_NS0ID_PUBLISHREQUEST:
INVOKE_SERVICE(Publish, UA_TYPES_PUBLISHRESPONSE);
break;
case UA_NS0ID_MODIFYSUBSCRIPTIONREQUEST:
INVOKE_SERVICE(ModifySubscription, UA_TYPES_MODIFYSUBSCRIPTIONRESPONSE);
break;
case UA_NS0ID_DELETESUBSCRIPTIONSREQUEST:
INVOKE_SERVICE(DeleteSubscriptions, UA_TYPES_DELETESUBSCRIPTIONSRESPONSE);
break;
case UA_NS0ID_CREATEMONITOREDITEMSREQUEST:
INVOKE_SERVICE(CreateMonitoredItems, UA_TYPES_CREATEMONITOREDITEMSRESPONSE);
break;
case UA_NS0ID_DELETEMONITOREDITEMSREQUEST:
INVOKE_SERVICE(DeleteMonitoredItems, UA_TYPES_DELETEMONITOREDITEMSRESPONSE);
break;
#endif
#ifdef ENABLE_METHODCALLS
case UA_NS0ID_CALLREQUEST:
INVOKE_SERVICE(Call, UA_TYPES_CALLRESPONSE);
break;
#endif
#ifdef ENABLE_NODEMANAGEMENT
case UA_NS0ID_ADDNODESREQUEST:
INVOKE_SERVICE(AddNodes, UA_TYPES_ADDNODESRESPONSE);
break;
case UA_NS0ID_ADDREFERENCESREQUEST:
INVOKE_SERVICE(AddReferences, UA_TYPES_ADDREFERENCESRESPONSE);
break;
case UA_NS0ID_DELETENODESREQUEST:
INVOKE_SERVICE(DeleteNodes, UA_TYPES_DELETENODESRESPONSE);
break;
case UA_NS0ID_DELETEREFERENCESREQUEST:
INVOKE_SERVICE(DeleteReferences, UA_TYPES_DELETEREFERENCESRESPONSE);
break;
#endif
default: {
if(requestType.namespaceIndex == 0 && requestType.identifier.numeric==787)
UA_LOG_INFO(server->logger, UA_LOGCATEGORY_NETWORK,
"Client requested a subscription that are not supported, the message will be skipped");
else
UA_LOG_INFO(server->logger, UA_LOGCATEGORY_NETWORK, "Unknown request: NodeId(ns=%d, i=%d)",
requestType.namespaceIndex, requestType.identifier.numeric);
UA_RequestHeader p;
UA_ServiceFault r;
if(UA_RequestHeader_decodeBinary(msg, pos, &p) != UA_STATUSCODE_GOOD)
return;
UA_ServiceFault_init(&r);
init_response_header(&p, &r.responseHeader);
r.responseHeader.serviceResult = UA_STATUSCODE_BADSERVICEUNSUPPORTED;
UA_SecureChannel_sendBinaryMessage(clientChannel, sequenceHeader.requestId, &r,
&UA_TYPES[UA_TYPES_SERVICEFAULT]);
UA_RequestHeader_deleteMembers(&p);
UA_ServiceFault_deleteMembers(&r);
break;
}
}
}
