void Tunnel::handleResponses(std::list<BuildRecordPtr> const &records)
{
bool allgood = true;
auto itr = m_hops.crbegin();
++itr;
for(; itr != m_hops.crend(); ++itr) {
BuildRequestRecordPtr h = std::static_pointer_cast<BuildRequestRecord>(*itr);
for(auto r: records)
r->decrypt(h->getReplyIV(), h->getReplyKey());
for(auto r: records) {
BuildResponseRecord resp = *r;
resp.parse();
if(resp.getReply() == BuildResponseRecord::Reply::SUCCESS) {
// TODO Record the success in the router's profile.
} else {
// TODO Record the failure in the router's profile.
allgood = false;
}
}
}
if(allgood)
m_state = Tunnel::State::OPERATIONAL;
else
m_state = Tunnel::State::FAILED;
}
OutboundTunnel::OutboundTunnel(std::vector<RouterIdentity> const &hops, RouterHash const &replyHash, uint32_t const replyTunnelId)
{
/* Zero hop tunnel */
if(hops.empty()) {
m_state = State::OPERATIONAL;
return;
}
uint32_t lastTunnelId;
RouterHash lastRouterHash;
for(int i = hops.size() - 1; i >= 0; i--) {
BuildRequestRecordPtr h;
if(i == hops.size() - 1) {
h = std::make_shared<BuildRequestRecord>(hops[i], replyHash);
h->setType(BuildRequestRecord::Type::ENDPOINT);
h->setNextTunnelId(replyTunnelId);
m_tunnelId = h->getNextTunnelId();
m_nextMsgId = h->getNextMsgId();
} else {
h = std::make_shared<BuildRequestRecord>(hops[i], lastRouterHash, lastTunnelId);
}
lastTunnelId = h->getTunnelId();
lastRouterHash = h->getLocalHash();
m_hops.push_front(h);
}
secureRecords();
}
void Tunnel::secureRecords()
{
for(auto itr = m_hops.cbegin(); itr != m_hops.cend(); ++itr) {
BuildRequestRecordPtr h = std::static_pointer_cast<BuildRequestRecord>(*itr);
const RouterHash hopHash = h->getLocalHash();
StaticByteArray<16> truncatedHash;
std::copy(hopHash.cbegin(), hopHash.cbegin() + 16, truncatedHash.begin());
h->setHeader(truncatedHash);
h->compile();
h->encrypt(h->getEncryptionKey());
std::list<BuildRecordPtr>::const_reverse_iterator ritr(itr);
for(; ritr != m_hops.crend(); ++ritr) {
BuildRequestRecordPtr r = std::static_pointer_cast<BuildRequestRecord>(*ritr);
h->decrypt(r->getReplyIV(), r->getReplyKey());
}
}
}
