void UA_SecureChannel_deleteMembers(UA_SecureChannel *channel) {
UA_AsymmetricAlgorithmSecurityHeader_deleteMembers(&channel->serverAsymAlgSettings);
UA_ByteString_deleteMembers(&channel->serverNonce);
UA_AsymmetricAlgorithmSecurityHeader_deleteMembers(&channel->clientAsymAlgSettings);
UA_ByteString_deleteMembers(&channel->clientNonce);
UA_ChannelSecurityToken_deleteMembers(&channel->securityToken);
}
UA_Client * UA_Client_new(void) {
UA_Client *client = UA_malloc(sizeof(UA_Client));
if(!client)
return UA_NULL;
UA_String_init(&client->endpointUrl);
client->connection.state = UA_CONNECTION_OPENING;
client->sequenceNumber = 0;
client->requestId = 0;
/* Secure Channel */
UA_ChannelSecurityToken_deleteMembers(&client->securityToken);
UA_ByteString_init(&client->clientNonce);
UA_ByteString_init(&client->serverNonce);
UA_NodeId_init(&client->authenticationToken);
return client;
}
static void
processDecodedOPNResponseAsync(void *application, UA_SecureChannel *channel,
UA_MessageType messageType,
UA_UInt32 requestId,
const UA_ByteString *message) {
/* Does the request id match? */
UA_Client *client = (UA_Client*)application;
if(requestId != client->requestId) {
UA_Client_disconnect(client);
return;
}
/* Is the content of the expected type? */
size_t offset = 0;
UA_NodeId responseId;
UA_NodeId expectedId = UA_NODEID_NUMERIC(
0, UA_TYPES[UA_TYPES_OPENSECURECHANNELRESPONSE].binaryEncodingId);
UA_StatusCode retval = UA_NodeId_decodeBinary(message, &offset,
&responseId);
if(retval != UA_STATUSCODE_GOOD) {
UA_Client_disconnect(client);
return;
}
if(!UA_NodeId_equal(&responseId, &expectedId)) {
UA_NodeId_deleteMembers(&responseId);
UA_Client_disconnect(client);
return;
}
UA_NodeId_deleteMembers (&responseId);
/* Decode the response */
UA_OpenSecureChannelResponse response;
retval = UA_OpenSecureChannelResponse_decodeBinary(message, &offset,
&response);
if(retval != UA_STATUSCODE_GOOD) {
UA_Client_disconnect(client);
return;
}
/* Response.securityToken.revisedLifetime is UInt32 we need to cast it to
* DateTime=Int64 we take 75% of lifetime to start renewing as described in
* standard */
client->nextChannelRenewal = UA_DateTime_nowMonotonic()
+ (UA_DateTime) (response.securityToken.revisedLifetime
* (UA_Double) UA_DATETIME_MSEC * 0.75);
/* Replace the token and nonce */
UA_ChannelSecurityToken_deleteMembers(&client->channel.securityToken);
UA_ByteString_deleteMembers(&client->channel.remoteNonce);
client->channel.securityToken = response.securityToken;
client->channel.remoteNonce = response.serverNonce;
UA_ResponseHeader_deleteMembers(&response.responseHeader); /* the other members were moved */
if(client->channel.state == UA_SECURECHANNELSTATE_OPEN)
UA_LOG_DEBUG(&client->config.logger, UA_LOGCATEGORY_SECURECHANNEL, "SecureChannel renewed");
else
UA_LOG_DEBUG(&client->config.logger, UA_LOGCATEGORY_SECURECHANNEL, "SecureChannel opened");
client->channel.state = UA_SECURECHANNELSTATE_OPEN;
if(client->state < UA_CLIENTSTATE_SECURECHANNEL)
setClientState(client, UA_CLIENTSTATE_SECURECHANNEL);
}