void check_ubus_listeners()
{
struct ubus_context *ubus = (struct ubus_context *)daemon->ubus;
if (!ubus)
{
if (!error_logged)
{
my_syslog(LOG_ERR, _("Cannot poll UBus listeners: no connection"));
error_logged = 1;
}
return;
}
error_logged = 0;
if (poll_check(ubus->sock.fd, POLLIN))
ubus_handle_event(ubus);
if (poll_check(ubus->sock.fd, POLLHUP | POLLERR))
{
my_syslog(LOG_INFO, _("Disconnecting from UBus"));
ubus_destroy(ubus);
}
}
void check_tftp_listeners(time_t now)
{
struct tftp_transfer *transfer, *tmp, **up;
ssize_t len;
struct ack {
unsigned short op, block;
} *mess = (struct ack *)daemon->packet;
/* Check for activity on any existing transfers */
for (transfer = daemon->tftp_trans, up = &daemon->tftp_trans; transfer; transfer = tmp)
{
tmp = transfer->next;
prettyprint_addr(&transfer->peer, daemon->addrbuff);
if (poll_check(transfer->sockfd, POLLIN))
{
/* we overwrote the buffer... */
daemon->srv_save = NULL;
if ((len = recv(transfer->sockfd, daemon->packet, daemon->packet_buff_sz, 0)) >= (ssize_t)sizeof(struct ack))
{
if (ntohs(mess->op) == OP_ACK && ntohs(mess->block) == (unsigned short)transfer->block)
{
/* Got ack, ensure we take the (re)transmit path */
transfer->timeout = now;
transfer->backoff = 0;
if (transfer->block++ != 0)
transfer->offset += transfer->blocksize - transfer->expansion;
}
else if (ntohs(mess->op) == OP_ERR)
{
char *p = daemon->packet + sizeof(struct ack);
char *end = daemon->packet + len;
char *err = next(&p, end);
/* Sanitise error message */
if (!err)
err = "";
else
sanitise(err);
my_syslog(MS_TFTP | LOG_ERR, _("error %d %s received from %s"),
(int)ntohs(mess->block), err,
daemon->addrbuff);
/* Got err, ensure we take abort */
transfer->timeout = now;
transfer->backoff = 100;
}
}
}
if (difftime(now, transfer->timeout) >= 0.0)
{
int endcon = 0;
/* timeout, retransmit */
transfer->timeout += 1 + (1<<transfer->backoff);
/* we overwrote the buffer... */
daemon->srv_save = NULL;
if ((len = get_block(daemon->packet, transfer)) == -1)
{
len = tftp_err_oops(daemon->packet, transfer->file->filename);
endcon = 1;
}
/* don't complain about timeout when we're awaiting the last
ACK, some clients never send it */
else if (++transfer->backoff > 7 && len != 0)
{
endcon = 1;
len = 0;
}
if (len != 0)
while(sendto(transfer->sockfd, daemon->packet, len, 0,
(struct sockaddr *)&transfer->peer, sa_len(&transfer->peer)) == -1 && errno == EINTR);
if (endcon || len == 0)
{
strcpy(daemon->namebuff, transfer->file->filename);
sanitise(daemon->namebuff);
my_syslog(MS_TFTP | LOG_INFO, endcon ? _("failed sending %s to %s") : _("sent %s to %s"), daemon->namebuff, daemon->addrbuff);
/* unlink */
*up = tmp;
if (endcon)
free_transfer(transfer);
else
{
/* put on queue to be sent to script and deleted */
transfer->next = daemon->tftp_done_trans;
daemon->tftp_done_trans = transfer;
}
continue;
}
}
up = &transfer->next;
}
}
void check_log_writer(int force)
{
if (log_fd != -1 && (force || poll_check(log_fd, POLLOUT)))
log_write();
}
