ndppd/src/session.cc

170 lines
4.0 KiB
C++

// ndppd - NDP Proxy Daemon
// Copyright (C) 2011 Daniel Adolfsson <daniel@priv.nu>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <algorithm>
#include "ndppd.h"
#include "proxy.h"
#include "iface.h"
#include "session.h"
NDPPD_NS_BEGIN
std::list<weak_ptr<session> > session::_sessions;
static address all_nodes = address("ff02::1");
void session::update_all(int elapsed_time)
{
for (std::list<weak_ptr<session> >::iterator it = _sessions.begin();
it != _sessions.end(); ) {
if (!*it) {
_sessions.erase(it++);
continue;
}
ptr<session> se = *it++;
if ((se->_ttl -= elapsed_time) >= 0) {
continue;
}
switch (se->_status) {
case session::WAITING:
logger::debug() << "session is now invalid";
se->_status = session::INVALID;
se->_ttl = se->_pr->ttl();
break;
default:
se->_pr->remove_session(se);
}
}
}
session::~session()
{
logger::debug() << "session::~session() this=" << logger::format("%x", this);
for (std::list<ptr<iface> >::iterator it = _ifaces.begin();
it != _ifaces.end(); it++) {
(*it)->remove_session(_ptr);
}
}
ptr<session> session::create(const ptr<proxy>& pr, const address& saddr,
const address& daddr, const address& taddr, bool auto_wire)
{
ptr<session> se(new session());
se->_ptr = se;
se->_pr = pr;
se->_saddr = address("::") == saddr ? all_nodes : saddr;
se->_taddr = taddr;
se->_daddr = daddr;
se->_autowire = auto_wire;
se->_ttl = pr->timeout();
_sessions.push_back(se);
logger::debug()
<< "session::create() pr=" << logger::format("%x", (proxy* )pr) << ", saddr=" << saddr
<< ", daddr=" << daddr << ", taddr=" << taddr << ", autowire=" << (_autowire ? "yes" : "no") << " =" << logger::format("%x", (session* )se);
return se;
}
void session::add_iface(const ptr<iface>& ifa)
{
if (std::find(_ifaces.begin(), _ifaces.end(), ifa) != _ifaces.end())
return;
ifa->add_session(_ptr);
_ifaces.push_back(ifa);
}
void session::send_solicit()
{
logger::debug() << "session::send_solicit() (_ifaces.size() = " << _ifaces.size() << ")";
for (std::list<ptr<iface> >::iterator it = _ifaces.begin();
it != _ifaces.end(); it++) {
logger::debug() << " - " << (*it)->name();
(*it)->write_solicit(_taddr);
}
}
void session::send_advert()
{
_pr->ifa()->write_advert(_saddr, _taddr, _pr->router());
}
void session::handle_auto_wire(const ptr<iface>& ifa)
{
logger::debug()
<< "session::handle_auto_wire() taddr=" << _taddr << ", ifa=" << ifa->name();
logger::debug() << "session::handle_auto_wire()";
}
void session::handle_advert(const ptr<iface>& ifa)
{
if (_autowire == true) {
handle_auto_wire(ifa);
}
handle_advert();
}
void session::handle_advert()
{
_status = VALID;
_ttl = _pr->ttl();
send_advert();
}
const address& session::taddr() const
{
return _taddr;
}
const address& session::saddr() const
{
return _saddr;
}
const address& session::daddr() const
{
return _daddr;
}
bool session::autowire() const
{
return _autowire;
}
int session::status() const
{
return _status;
}
void session::status(int val)
{
_status = val;
}
NDPPD_NS_END