Socket
ServerSocket_accept(ServerSocket socket)
{
int fd;
Socket conSocket = NULL;
fd = accept(socket->fd, NULL, NULL );
if (fd >= 0) {
conSocket = TcpSocket_create();
conSocket->fd = fd;
}
return conSocket;
}
void
IsoClientConnection_associate(IsoClientConnection self, IsoConnectionParameters* params,
ByteBuffer* payload)
{
Socket socket = TcpSocket_create();
self->socket = socket;
if (!Socket_connect(socket, params->hostname, params->tcpPort))
goto returnError;
self->cotpBuf = malloc(ISO_CLIENT_BUFFER_SIZE);
self->cotpBuffer = calloc(1, sizeof(ByteBuffer));
ByteBuffer_wrap(self->cotpBuffer, self->cotpBuf, 0, ISO_CLIENT_BUFFER_SIZE);
self->cotpConnection = calloc(1, sizeof(CotpConnection));
CotpConnection_init(self->cotpConnection, socket, self->cotpBuffer);
/* COTP handshake */
CotpIndication cotpIndication =
CotpConnection_sendConnectionRequestMessage(self->cotpConnection);
cotpIndication = CotpConnection_parseIncomingMessage(self->cotpConnection);
if (cotpIndication != CONNECT_INDICATION)
goto returnError;
/* Upper layers handshake */
AcseConnection acse;
ByteBuffer acseBuffer;
ByteBuffer_wrap(&acseBuffer, self->buffer1, 0, ISO_CLIENT_BUFFER_SIZE);
AcseConnection_init(&acse);
if (params != NULL)
AcseConnection_setAuthenticationParameter(&acse, params->acseAuthParameter);
AcseConnection_createAssociateRequestMessage(&acse, &acseBuffer, payload);
ByteBuffer presentationBuffer;
ByteBuffer_wrap(&presentationBuffer, self->buffer2, 0, ISO_CLIENT_BUFFER_SIZE);
self->presentation = calloc(1, sizeof(IsoPresentation));
IsoPresentation_init(self->presentation);
IsoPresentation_createConnectPdu(self->presentation, &presentationBuffer, &acseBuffer);
ByteBuffer sessionBuffer;
ByteBuffer_wrap(&sessionBuffer, self->buffer1, 0, ISO_CLIENT_BUFFER_SIZE);
self->session = calloc(1, sizeof(IsoSession));
IsoSession_init(self->session);
IsoSession_createConnectSpdu(self->session, &sessionBuffer,
ByteBuffer_getSize(&presentationBuffer));
ByteBuffer_append(&sessionBuffer, ByteBuffer_getBuffer(&presentationBuffer),
ByteBuffer_getSize(&presentationBuffer));
CotpConnection_sendDataMessage(self->cotpConnection, &sessionBuffer);
cotpIndication = CotpConnection_parseIncomingMessage(self->cotpConnection);
if (cotpIndication != DATA_INDICATION)
goto returnError;
IsoSessionIndication sessionIndication;
sessionIndication =
IsoSession_parseMessage(self->session, CotpConnection_getPayload(self->cotpConnection));
if (sessionIndication != SESSION_CONNECT) {
if (DEBUG) printf("IsoClientConnection_associate: no session connect indication\n");
goto returnError;
}
IsoPresentationIndication presentationIndication;
presentationIndication =
IsoPresentation_parseAcceptMessage(self->presentation, IsoSession_getUserData(self->session));
if (presentationIndication != PRESENTATION_OK) {
if (DEBUG) printf("IsoClientConnection_associate: no presentation ok indication\n");
goto returnError;
}
AcseIndication acseIndication;
acseIndication = AcseConnection_parseMessage(&acse, &self->presentation->nextPayload);
if (acseIndication != ACSE_ASSOCIATE) {
if (DEBUG) printf("IsoClientConnection_associate: no ACSE_ASSOCIATE indication\n");
goto returnError;
}
ByteBuffer acsePayload; //TODO allocate buffer dynamically???
ByteBuffer_wrap(&acsePayload, acse.userDataBuffer, acse.userDataBufferSize, 1024);
self->callback(ISO_IND_ASSOCIATION_SUCCESS, self->callbackParameter, &acsePayload);
self->state = STATE_ASSOCIATED;
AcseConnection_destroy(&acse);
self->thread = Thread_create(connectionHandlingThread, self, false);
Thread_start(self->thread);
return;
returnError:
self->callback(ISO_IND_ASSOCIATION_FAILED, self->callbackParameter, &acsePayload);
AcseConnection_destroy(&acse);
self->state = STATE_ERROR;
return;
}
