/* Takes the raw message from the network layer */
void
UA_Server_processBinaryMessage(UA_Server *server, UA_Connection *connection,
const UA_ByteString *message) {
UA_SecureChannel *channel = connection->channel;
if(channel) {
/* Assemble chunks in the securechannel and process complete messages */
UA_StatusCode retval =
UA_SecureChannel_processChunks(channel, message,
(UA_ProcessMessageCallback*)UA_Server_processSecureChannelMessage, server);
if(retval != UA_STATUSCODE_GOOD)
UA_LOG_TRACE_CHANNEL(server->config.logger, channel,
"Procesing chunkgs resulted in error code 0x%08x", retval);
} else {
/* Process messages without a channel and no chunking */
size_t offset = 0;
UA_TcpMessageHeader tcpMessageHeader;
UA_StatusCode retval = UA_TcpMessageHeader_decodeBinary(message, &offset, &tcpMessageHeader);
if(retval != UA_STATUSCODE_GOOD) {
connection->close(connection);
return;
}
/* Dispatch according to the message type */
switch(tcpMessageHeader.messageTypeAndChunkType & 0x00ffffff) {
case UA_MESSAGETYPE_HEL:
UA_LOG_TRACE(server->config.logger, UA_LOGCATEGORY_NETWORK,
"Connection %i | Process HEL message", connection->sockfd);
processHEL(connection, message, &offset);
break;
case UA_MESSAGETYPE_OPN: {
UA_LOG_TRACE(server->config.logger, UA_LOGCATEGORY_NETWORK,
"Connection %i | Process OPN message", connection->sockfd);
UA_UInt32 channelId = 0;
retval = UA_UInt32_decodeBinary(message, &offset, &channelId);
if(retval != UA_STATUSCODE_GOOD)
connection->close(connection);
UA_ByteString offsetMessage = (UA_ByteString){
.data = message->data + 12, .length = message->length - 12};
processOPN(server, connection, channelId, &offsetMessage);
break; }
case UA_MESSAGETYPE_MSG:
UA_LOG_TRACE(server->config.logger, UA_LOGCATEGORY_NETWORK,
"Connection %i | Processing a MSG message not possible "
"without a SecureChannel", connection->sockfd);
connection->close(connection);
break;
case UA_MESSAGETYPE_CLO:
UA_LOG_TRACE(server->config.logger, UA_LOGCATEGORY_NETWORK,
"Connection %i | Processing a CLO message not possible "
"without a SecureChannel", connection->sockfd);
connection->close(connection);
break;
default:
UA_LOG_TRACE(server->config.logger, UA_LOGCATEGORY_NETWORK,
"Connection %i | Unknown message type", connection->sockfd);
connection->close(connection);
}
}
}
UA_StatusCode
UA_Client_connect_iterate(UA_Client *client) {
UA_LOG_TRACE(&client->config.logger, UA_LOGCATEGORY_CLIENT,
"Client connect iterate");
if (client->connection.state == UA_CONNECTION_ESTABLISHED){
if(client->state < UA_CLIENTSTATE_WAITING_FOR_ACK) {
client->connectStatus = sendHELMessage(client);
if(client->connectStatus == UA_STATUSCODE_GOOD) {
setClientState(client, UA_CLIENTSTATE_WAITING_FOR_ACK);
} else {
client->connection.close(&client->connection);
client->connection.free(&client->connection);
}
return client->connectStatus;
}
}
/* If server is not connected */
if(client->connection.state == UA_CONNECTION_CLOSED) {
client->connectStatus = UA_STATUSCODE_BADCONNECTIONCLOSED;
UA_LOG_ERROR(&client->config.logger, UA_LOGCATEGORY_NETWORK,
"No connection to server.");
}
if(client->connectStatus != UA_STATUSCODE_GOOD) {
client->connection.close(&client->connection);
client->connection.free(&client->connection);
}
return client->connectStatus;
}
UA_StatusCode
UA_Client_connect_async(UA_Client *client, const char *endpointUrl,
UA_ClientAsyncServiceCallback callback,
void *userdata) {
UA_LOG_TRACE(&client->config.logger, UA_LOGCATEGORY_CLIENT,
"Client internal async");
if(client->state >= UA_CLIENTSTATE_WAITING_FOR_ACK)
return UA_STATUSCODE_GOOD;
UA_ChannelSecurityToken_init(&client->channel.securityToken);
client->channel.state = UA_SECURECHANNELSTATE_FRESH;
client->endpointsHandshake = true;
client->channel.sendSequenceNumber = 0;
client->requestId = 0;
UA_String_deleteMembers(&client->endpointUrl);
client->endpointUrl = UA_STRING_ALLOC(endpointUrl);
UA_StatusCode retval = UA_STATUSCODE_GOOD;
client->connection =
client->config.initConnectionFunc(client->config.localConnectionConfig,
client->endpointUrl,
client->config.timeout, &client->config.logger);
if(client->connection.state != UA_CONNECTION_OPENING) {
UA_LOG_TRACE(&client->config.logger, UA_LOGCATEGORY_CLIENT,
"Could not init async connection");
retval = UA_STATUSCODE_BADCONNECTIONCLOSED;
goto cleanup;
}
/* Set the channel SecurityMode if not done so far */
if(client->channel.securityMode == UA_MESSAGESECURITYMODE_INVALID)
client->channel.securityMode = UA_MESSAGESECURITYMODE_NONE;
/* Set the channel SecurityPolicy if not done so far */
if(!client->channel.securityPolicy) {
UA_SecurityPolicy *sp =
getSecurityPolicy(client, UA_STRING("http://opcfoundation.org/UA/SecurityPolicy#None"));
if(!sp) {
retval = UA_STATUSCODE_BADINTERNALERROR;
goto cleanup;
}
UA_ByteString remoteCertificate = UA_BYTESTRING_NULL;
retval = UA_SecureChannel_setSecurityPolicy(&client->channel, sp,
&remoteCertificate);
if(retval != UA_STATUSCODE_GOOD)
goto cleanup;
}
client->asyncConnectCall.callback = callback;
client->asyncConnectCall.userdata = userdata;
if(!client->connection.connectCallbackID) {
UA_LOG_TRACE(&client->config.logger, UA_LOGCATEGORY_CLIENT,
"Adding async connection callback");
retval = UA_Client_addRepeatedCallback(
client, client->config.pollConnectionFunc, &client->connection, 100.0,
&client->connection.connectCallbackID);
if(retval != UA_STATUSCODE_GOOD)
goto cleanup;
}
retval = UA_SecureChannel_generateLocalNonce(&client->channel);
if(retval != UA_STATUSCODE_GOOD)
goto cleanup;
/* Delete async service. TODO: Move this from connect to the disconnect/cleanup phase */
UA_Client_AsyncService_removeAll(client, UA_STATUSCODE_BADSHUTDOWN);
#ifdef UA_ENABLE_SUBSCRIPTIONS
client->currentlyOutStandingPublishRequests = 0;
#endif
UA_NodeId_deleteMembers(&client->authenticationToken);
/* Generate new local and remote key */
retval = UA_SecureChannel_generateNewKeys(&client->channel);
if(retval != UA_STATUSCODE_GOOD)
goto cleanup;
return retval;
cleanup:
UA_LOG_TRACE(&client->config.logger, UA_LOGCATEGORY_CLIENT,
"Failure during async connect");
UA_Client_disconnect(client);
return retval;
}