/**
* If a restart signal is received during exit-notification, reset the
* signal and return true. If its a soft restart signal from the event loop
* which implies the loop cannot continue, remap to SIGTERM to exit promptly.
*/
static bool
ignore_restart_signals(struct context *c)
{
bool ret = false;
#ifdef ENABLE_OCC
if ( (c->sig->signal_received == SIGUSR1 || c->sig->signal_received == SIGHUP)
&& event_timeout_defined(&c->c2.explicit_exit_notification_interval) )
{
if (c->sig->source == SIG_SOURCE_HARD)
{
msg(M_INFO, "Ignoring %s received during exit notification",
signal_name(c->sig->signal_received, true));
signal_reset(c->sig);
ret = true;
}
else
{
msg(M_INFO, "Converting soft %s received during exit notification to SIGTERM",
signal_name(c->sig->signal_received, true));
register_signal(c, SIGTERM, "exit-with-notification");
ret = false;
}
}
#endif
return ret;
}
void
read_incoming_link (struct context *c)
{
/*
* Set up for recvfrom call to read datagram
* sent to our TCP/UDP port.
*/
int status;
/*ASSERT (!c->c2.to_tun.len);*/
perf_push (PERF_READ_IN_LINK);
c->c2.buf = c->c2.buffers->read_link_buf;
ASSERT (buf_init (&c->c2.buf, FRAME_HEADROOM_ADJ (&c->c2.frame, FRAME_HEADROOM_MARKER_READ_LINK)));
status = link_socket_read (c->c2.link_socket,
&c->c2.buf,
MAX_RW_SIZE_LINK (&c->c2.frame),
&c->c2.from);
if (socket_connection_reset (c->c2.link_socket, status))
{
#if PORT_SHARE
if (port_share && socket_foreign_protocol_detected (c->c2.link_socket))
{
const struct buffer *fbuf = socket_foreign_protocol_head (c->c2.link_socket);
const int sd = socket_foreign_protocol_sd (c->c2.link_socket);
port_share_redirect (port_share, fbuf, sd);
register_signal (c, SIGTERM, "port-share-redirect");
}
else
#endif
{
/* received a disconnect from a connection-oriented protocol */
if (c->options.inetd)
{
register_signal (c, SIGTERM, "connection-reset-inetd");
msg (D_STREAM_ERRORS, "Connection reset, inetd/xinetd exit [%d]", status);
}
else
{
#ifdef ENABLE_OCC
if (event_timeout_defined(&c->c2.explicit_exit_notification_interval))
{
msg (D_STREAM_ERRORS, "Connection reset during exit notification period, ignoring [%d]", status);
openvpn_sleep(1);
}
else
#endif
{
register_signal (c, SIGUSR1, "connection-reset"); /* SOFT-SIGUSR1 -- TCP connection reset */
msg (D_STREAM_ERRORS, "Connection reset, restarting [%d]", status);
}
}
}
perf_pop ();
return;
}
/* check recvfrom status */
check_status (status, "read", c->c2.link_socket, NULL);
#ifdef ENABLE_SOCKS
/* Remove socks header if applicable */
socks_postprocess_incoming_link (c);
#endif
perf_pop ();
}
