static void
lcp_timeout(void *ctx)
{
lcp *_this;
u_char *cp, buf[32];
_this = ctx;
if (_this->echo_failures >= _this->echo_max_retries) {
fsm_log(&_this->fsm, LOG_NOTICE, "keepalive failure.");
if (_this->fsm.ppp != NULL) {
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(_this->fsm.ppp,
RADIUS_TERMNATE_CAUSE_IDLE_TIMEOUT);
#endif
ppp_stop(_this->fsm.ppp, NULL);
}
return;
}
cp = buf;
PUTLONG(_this->magic_number, cp);
fsm_sdata(&_this->fsm, ECHOREQ, _this->fsm.id++, buf, 4);
_this->echo_failures++;
lcp_reset_timeout(_this);
}
/** timer event handler for idle timer */
static void
ppp_idle_timeout(int fd, short evtype, void *context)
{
npppd_ppp *_this;
_this = context;
ppp_log(_this, LOG_NOTICE, "Idle timeout(%d sec)", _this->timeout_sec);
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(_this,
RADIUS_TERMNATE_CAUSE_IDLE_TIMEOUT);
#endif
ppp_stop(_this, NULL);
}
/**
* This function will be called by the physical layer when it is down.
* <p>
* Use this function only on such conditions that the physical layer cannot
* input or output PPP frames. Use {@link ::ppp_stop()} instead if we can
* disconnect PPP gently.</p>
*/
void
ppp_phy_downed(npppd_ppp *_this)
{
PPP_ASSERT(_this != NULL);
ppp_down_others(_this);
fsm_lowerdown(&_this->lcp.fsm);
fsm_close(&_this->lcp.fsm, NULL);
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(_this,
RADIUS_TERMNATE_CAUSE_LOST_CARRIER);
#endif
ppp_stop0(_this);
}
/**
* Stop the PPP and destroy the npppd_ppp instance
* @param reason Reason of stopping the PPP. Specify NULL if there is
* no special reason. This reason will be used as a
* reason field of LCP Terminate-Request message and
* notified to the peer.
*/
void
ppp_stop(npppd_ppp *_this, const char *reason)
{
PPP_ASSERT(_this != NULL);
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(_this,
RADIUS_TERMNATE_CAUSE_ADMIN_RESET);
#endif
ppp_set_disconnect_cause(_this, PPP_DISCON_NORMAL, 0, 2 /* by local */,
NULL);
ppp_down_others(_this);
fsm_close(&_this->lcp.fsm, reason);
}
static void
lcp_down(fsm *f)
{
lcp *_this;
if (f->ppp->disconnect_code == PPP_DISCON_NO_INFORMATION) {
/*
* disconnect code is set when we are closing the lcp, so
* 'no info' means the lcp is going down by peer's termreq.
*/
ppp_set_disconnect_cause(f->ppp, PPP_DISCON_NORMAL, 0,
1 /* peer */, NULL);
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(f->ppp,
RADIUS_TERMNATE_CAUSE_USER_REQUEST);
#endif
}
_this = &f->ppp->lcp;
UNTIMEOUT(lcp_timeout, _this);
}
static void
ppp_stop0(npppd_ppp *_this)
{
char mppe_str[BUFSIZ];
char label[512];
#ifdef USE_NPPPD_RADIUS
ppp_set_radius_terminate_cause(_this, RADIUS_TERMNATE_CAUSE_NAS_ERROR);
#endif
ppp_set_disconnect_cause(_this, PPP_DISCON_NORMAL, 0, 1 /* by local */,
NULL);
_this->end_monotime = get_monosec();
if (_this->phy_close != NULL)
_this->phy_close(_this);
_this->phy_close = NULL;
/*
* NAT/Blackhole detection for PPTP(GRE)
*/
if (_this->lcp.dialin_proxy != 0 &&
_this->lcp.dialin_proxy_lcp_renegotiation == 0) {
/* No LCP packets on dialin proxy without LCP renegotiation */
} else if (_this->lcp.recv_ress == 0) { /* No responses */
if (_this->lcp.recv_reqs == 0) /* No requests */
ppp_log(_this, LOG_WARNING, "no PPP frames from the "
"peer. router/NAT issue? (may have filtered out)");
else
ppp_log(_this, LOG_WARNING, "my PPP frames may not "
"have arrived at the peer. router/NAT issue? (may "
"be the only-first-person problem)");
}
#ifdef USE_NPPPD_PIPEX
if (npppd_ppp_pipex_disable(_this->pppd, _this) != 0)
ppp_log(_this, LOG_ERR,
"npppd_ppp_pipex_disable() failed: %m");
#endif
ppp_set_tunnel_label(_this, label, sizeof(label));
#ifdef USE_NPPPD_MPPE
if (_this->mppe_started) {
snprintf(mppe_str, sizeof(mppe_str),
"mppe=yes mppe_in=%dbits,%s mppe_out=%dbits,%s",
_this->mppe.recv.keybits,
(_this->mppe.recv.stateless)? "stateless" : "stateful",
_this->mppe.send.keybits,
(_this->mppe.send.stateless)? "stateless" : "stateful");
} else
#endif
snprintf(mppe_str, sizeof(mppe_str), "mppe=no");
ppp_log(_this, LOG_NOTICE,
"logtype=TUNNELUSAGE user=\"%s\" duration=%ldsec layer2=%s "
"layer2from=%s auth=%s data_in=%llubytes,%upackets "
"data_out=%llubytes,%upackets error_in=%u error_out=%u %s "
"iface=%s",
_this->username[0]? _this->username : "******",
(long)(_this->end_monotime - _this->start_monotime),
_this->phy_label, label,
_this->username[0]? ppp_peer_auth_string(_this) : "none",
(unsigned long long)_this->ibytes, _this->ipackets,
(unsigned long long)_this->obytes, _this->opackets,
_this->ierrors, _this->oerrors, mppe_str,
npppd_ppp_get_iface_name(_this->pppd, _this));
#ifdef USE_NPPPD_RADIUS
npppd_ppp_radius_acct_stop(_this->pppd, _this);
#endif
npppd_ppp_unbind_iface(_this->pppd, _this);
#ifdef USE_NPPPD_MPPE
mppe_fini(&_this->mppe);
#endif
evtimer_del(&_this->idle_event);
npppd_release_ip(_this->pppd, _this);
ppp_destroy(_this);
}
