int ftpc_socklisten(struct ftpc_socket_s *sock)
{
unsigned int addrlen = sizeof(sock->laddr);
int ret;
/* Bind the local socket to the local address */
sock->laddr.sin_port = 0;
ret = bind(sock->sd, (struct sockaddr *)&sock->laddr, addrlen);
if (ret < 0)
{
ndbg("bind() failed: %d\n", errno);
return ERROR;
}
/* Wait for the connection to the server */
if (listen(sock->sd, 1) == -1)
{
return ERROR;
}
/* Then get the local address selected by NuttX */
ret = ftpc_sockgetsockname(sock, &sock->laddr);
return ret;
}
int ftpc_sockconnect(struct ftpc_socket_s *sock, struct sockaddr_in *addr)
{
int ret;
/* Connect to the server */
ret = connect(sock->sd, (struct sockaddr *)addr, sizeof(struct sockaddr));
if (ret < 0)
{
ndbg("connect() failed: %d\n", errno);
return ERROR;
}
/* Get the local address of the socket */
ret = ftpc_sockgetsockname(sock, &sock->laddr);
if (ret < 0)
{
ndbg("ftpc_sockgetsockname() failed: %d\n", errno);
return ERROR;
}
sock->connected = true;
return OK;
}
int ftpc_xfrinit(FAR struct ftpc_session_s *session)
{
struct sockaddr_in addr;
uint8_t addrport[6];
uint8_t *paddr;
uint8_t *pport;
int ret;
/* We must be connected to initiate a transfer */
if (!ftpc_connected(session))
{
ndbg("Not connected\n");
goto errout;
}
/* Initialize the data channel */
ret = ftpc_sockinit(&session->data);
if (ret != OK)
{
ndbg("ftpc_sockinit() failed: %d\n", errno);
goto errout;
}
/* Duplicate the address and connection information of the command channel */
ftpc_sockcopy(&session->data, &session->cmd);
/* Should we enter passive mode? */
if (FTPC_IS_PASSIVE(session))
{
/* Yes.. going passive. */
ret = ftp_pasvmode(session, addrport);
if (ret != OK)
{
ndbg("ftp_pasvmode() failed: %d\n", errno);
goto errout_with_data;
}
/* Configure the data socket */
ftpc_sockgetsockname(&session->cmd, &addr);
memcpy(&addr.sin_addr, addrport, 4);
memcpy(&addr.sin_port, addrport+4, 2);
/* Connect the data socket */
ret = ftpc_sockconnect(&session->data, &addr);
if (ret < 0)
{
ndbg("ftpc_sockconnect() failed: %d\n", errno);
goto errout_with_data;
}
}
else
{
/* Wait for the connection to be established */
ftpc_socklisten(&session->data);
/* Then send our local data channel address to the server */
paddr = (uint8_t *)&session->data.laddr.sin_addr;
pport = (uint8_t *)&session->data.laddr.sin_port;
ret = ftpc_cmd(session, "PORT %d,%d,%d,%d,%d,%d",
paddr[0], paddr[1], paddr[2],
paddr[3], pport[0], pport[1]);
if (ret < 0)
{
ndbg("ftpc_cmd() failed: %d\n", errno);
goto errout_with_data;
}
}
return OK;
errout_with_data:
ftpc_sockclose(&session->data);
errout:
return ERROR;
}
