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952 lines
24 KiB
C++
952 lines
24 KiB
C++
#include <path/path.hpp>
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#include <messages/dht.hpp>
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#include <messages/discard.hpp>
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#include <messages/exit.hpp>
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#include <messages/path_latency.hpp>
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#include <messages/relay_commit.hpp>
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#include <messages/transfer_traffic.hpp>
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#include <path/pathbuilder.hpp>
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#include <profiling.hpp>
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#include <router/abstractrouter.hpp>
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#include <util/buffer.hpp>
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#include <util/endian.hpp>
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#include <deque>
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namespace llarp
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{
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namespace path
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{
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std::ostream&
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TransitHopInfo::print(std::ostream& stream, int level, int spaces) const
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{
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Printer printer(stream, level, spaces);
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printer.printAttribute("tx", txID);
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printer.printAttribute("rx", rxID);
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printer.printAttribute("upstream", upstream);
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printer.printAttribute("downstream", downstream);
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return stream;
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}
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PathContext::PathContext(AbstractRouter* router)
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: m_Router(router), m_AllowTransit(false)
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{
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}
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PathContext::~PathContext()
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{
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}
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void
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PathContext::AllowTransit()
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{
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m_AllowTransit = true;
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}
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bool
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PathContext::AllowingTransit() const
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{
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return m_AllowTransit;
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}
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llarp_threadpool*
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PathContext::Worker()
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{
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return m_Router->threadpool();
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}
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Crypto*
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PathContext::Crypto()
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{
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return m_Router->crypto();
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}
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Logic*
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PathContext::logic()
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{
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return m_Router->logic();
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}
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const SecretKey&
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PathContext::EncryptionSecretKey()
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{
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return m_Router->encryption();
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}
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bool
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PathContext::HopIsUs(const RouterID& k) const
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{
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return std::equal(m_Router->pubkey(), m_Router->pubkey() + PUBKEYSIZE,
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k.begin());
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}
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bool
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PathContext::ForwardLRCM(const RouterID& nextHop,
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const std::array< EncryptedFrame, 8 >& frames)
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{
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LogDebug("forwarding LRCM to ", nextHop);
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LR_CommitMessage msg;
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msg.frames = frames;
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return m_Router->SendToOrQueue(nextHop, &msg);
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}
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template < typename Map_t, typename Key_t, typename CheckValue_t,
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typename GetFunc_t >
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IHopHandler*
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MapGet(Map_t& map, const Key_t& k, CheckValue_t check, GetFunc_t get)
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{
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util::Lock lock(&map.first);
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auto range = map.second.equal_range(k);
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for(auto i = range.first; i != range.second; ++i)
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{
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if(check(i->second))
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return get(i->second);
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}
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return nullptr;
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}
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template < typename Map_t, typename Key_t, typename CheckValue_t >
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bool
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MapHas(Map_t& map, const Key_t& k, CheckValue_t check)
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{
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util::Lock lock(&map.first);
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auto range = map.second.equal_range(k);
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for(auto i = range.first; i != range.second; ++i)
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{
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if(check(i->second))
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return true;
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}
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return false;
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}
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template < typename Map_t, typename Key_t, typename Value_t >
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void
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MapPut(Map_t& map, const Key_t& k, const Value_t& v)
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{
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util::Lock lock(&map.first);
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map.second.emplace(k, v);
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}
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template < typename Map_t, typename Visit_t >
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void
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MapIter(Map_t& map, Visit_t v)
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{
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util::Lock lock(map.first);
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for(const auto& item : map.second)
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v(item);
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}
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template < typename Map_t, typename Key_t, typename Check_t >
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void
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MapDel(Map_t& map, const Key_t& k, Check_t check)
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{
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util::Lock lock(map.first);
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auto range = map.second.equal_range(k);
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for(auto i = range.first; i != range.second;)
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{
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if(check(i->second))
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i = map.second.erase(i);
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else
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++i;
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}
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}
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void
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PathContext::AddOwnPath(PathSet* set, Path* path)
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{
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set->AddPath(path);
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MapPut(m_OurPaths, path->TXID(), set);
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MapPut(m_OurPaths, path->RXID(), set);
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}
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bool
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PathContext::HasTransitHop(const TransitHopInfo& info)
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{
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return MapHas(m_TransitPaths, info.txID,
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[info](const std::shared_ptr< TransitHop >& hop) -> bool {
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return info == hop->info;
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});
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}
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IHopHandler*
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PathContext::GetByUpstream(const RouterID& remote, const PathID_t& id)
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{
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auto own = MapGet(
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m_OurPaths, id,
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[](ABSL_ATTRIBUTE_UNUSED const PathSet* s) -> bool {
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// TODO: is this right?
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return true;
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},
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[remote, id](PathSet* p) -> IHopHandler* {
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return p->GetByUpstream(remote, id);
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});
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if(own)
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return own;
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return MapGet(
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m_TransitPaths, id,
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[remote](const std::shared_ptr< TransitHop >& hop) -> bool {
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return hop->info.upstream == remote;
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},
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[](const std::shared_ptr< TransitHop >& h) -> IHopHandler* {
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return h.get();
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});
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}
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bool
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PathContext::TransitHopPreviousIsRouter(const PathID_t& path,
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const RouterID& otherRouter)
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{
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util::Lock lock(&m_TransitPaths.first);
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auto itr = m_TransitPaths.second.find(path);
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if(itr == m_TransitPaths.second.end())
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return false;
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return itr->second->info.downstream == otherRouter;
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}
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IHopHandler*
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PathContext::GetByDownstream(const RouterID& remote, const PathID_t& id)
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{
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return MapGet(
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m_TransitPaths, id,
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[remote](const std::shared_ptr< TransitHop >& hop) -> bool {
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return hop->info.downstream == remote;
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},
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[](const std::shared_ptr< TransitHop >& h) -> IHopHandler* {
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return h.get();
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});
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}
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PathSet*
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PathContext::GetLocalPathSet(const PathID_t& id)
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{
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auto& map = m_OurPaths;
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util::Lock lock(&map.first);
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auto itr = map.second.find(id);
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if(itr != map.second.end())
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{
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return itr->second;
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}
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return nullptr;
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}
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const byte_t*
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PathContext::OurRouterID() const
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{
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return m_Router->pubkey();
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}
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AbstractRouter*
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PathContext::Router()
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{
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return m_Router;
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}
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IHopHandler*
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PathContext::GetPathForTransfer(const PathID_t& id)
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{
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RouterID us(OurRouterID());
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auto& map = m_TransitPaths;
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{
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util::Lock lock(&map.first);
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auto range = map.second.equal_range(id);
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for(auto i = range.first; i != range.second; ++i)
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{
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if(i->second->info.upstream == us)
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return i->second.get();
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}
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}
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return nullptr;
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}
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void
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PathContext::PutTransitHop(std::shared_ptr< TransitHop > hop)
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{
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MapPut(m_TransitPaths, hop->info.txID, hop);
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MapPut(m_TransitPaths, hop->info.rxID, hop);
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}
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void
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PathContext::ExpirePaths(llarp_time_t now)
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{
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util::Lock lock(&m_TransitPaths.first);
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auto& map = m_TransitPaths.second;
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auto itr = map.begin();
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while(itr != map.end())
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{
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if(itr->second->Expired(now))
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{
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itr = map.erase(itr);
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}
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else
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++itr;
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}
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for(auto& builder : m_PathBuilders)
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{
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if(builder)
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builder->ExpirePaths(now);
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}
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}
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void
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PathContext::BuildPaths(llarp_time_t now)
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{
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for(auto& builder : m_PathBuilders)
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{
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if(builder->ShouldBuildMore(now))
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{
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builder->BuildOne();
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}
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}
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}
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void
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PathContext::TickPaths(llarp_time_t now)
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{
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for(auto& builder : m_PathBuilders)
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builder->Tick(now, m_Router);
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}
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routing::IMessageHandler*
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PathContext::GetHandler(const PathID_t& id)
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{
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routing::IMessageHandler* h = nullptr;
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auto pathset = GetLocalPathSet(id);
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if(pathset)
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{
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h = pathset->GetPathByID(id);
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}
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if(h)
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return h;
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RouterID us(OurRouterID());
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auto& map = m_TransitPaths;
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{
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util::Lock lock(&map.first);
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auto range = map.second.equal_range(id);
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for(auto i = range.first; i != range.second; ++i)
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{
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if(i->second->info.upstream == us)
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return i->second.get();
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}
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}
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return nullptr;
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}
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void
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PathContext::AddPathBuilder(Builder* ctx)
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{
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m_PathBuilders.push_back(ctx);
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}
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void
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PathContext::RemovePathSet(PathSet* set)
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{
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util::Lock lock(&m_OurPaths.first);
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auto& map = m_OurPaths.second;
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auto itr = map.begin();
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while(itr != map.end())
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{
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if(itr->second == set)
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itr = map.erase(itr);
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else
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++itr;
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}
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}
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void
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PathContext::RemovePathBuilder(Builder* ctx)
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{
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m_PathBuilders.remove(ctx);
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RemovePathSet(ctx);
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}
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std::ostream&
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TransitHop::print(std::ostream& stream, int level, int spaces) const
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{
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Printer printer(stream, level, spaces);
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printer.printAttribute("TransitHop", info);
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printer.printAttribute("started", started);
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printer.printAttribute("lifetime", lifetime);
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return stream;
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}
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PathHopConfig::PathHopConfig()
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{
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}
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PathHopConfig::~PathHopConfig()
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{
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}
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Path::Path(const std::vector< RouterContact >& h, PathSet* parent,
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PathRole startingRoles)
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: m_PathSet(parent), _role(startingRoles)
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{
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hops.resize(h.size());
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size_t hsz = h.size();
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for(size_t idx = 0; idx < hsz; ++idx)
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{
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hops[idx].rc = h[idx];
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hops[idx].txID.Randomize();
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hops[idx].rxID.Randomize();
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}
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for(size_t idx = 0; idx < hsz - 1; ++idx)
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{
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hops[idx].txID = hops[idx + 1].rxID;
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}
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// initialize parts of the introduction
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intro.router = hops[hsz - 1].rc.pubkey;
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intro.pathID = hops[hsz - 1].txID;
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EnterState(ePathBuilding, parent->Now());
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}
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void
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Path::SetBuildResultHook(BuildResultHookFunc func)
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{
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m_BuiltHook = func;
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}
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RouterID
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Path::Endpoint() const
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{
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return hops[hops.size() - 1].rc.pubkey;
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}
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PubKey
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Path::EndpointPubKey() const
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{
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return hops[hops.size() - 1].rc.pubkey;
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}
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PathID_t
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Path::TXID() const
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{
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return hops[0].txID;
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}
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PathID_t
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Path::RXID() const
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{
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return hops[0].rxID;
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}
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bool
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Path::IsReady() const
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{
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return intro.latency > 0 && _status == ePathEstablished;
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}
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bool
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Path::IsEndpoint(const RouterID& r, const PathID_t& id) const
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{
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return hops[hops.size() - 1].rc.pubkey == r
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&& hops[hops.size() - 1].txID == id;
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}
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RouterID
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Path::Upstream() const
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{
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return hops[0].rc.pubkey;
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}
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std::string
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Path::HopsString() const
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{
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std::stringstream ss;
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for(const auto& hop : hops)
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ss << RouterID(hop.rc.pubkey) << " -> ";
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return ss.str();
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}
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void
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Path::EnterState(PathStatus st, llarp_time_t now)
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{
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if(st == ePathExpired && _status == ePathBuilding)
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{
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_status = st;
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m_PathSet->HandlePathBuildTimeout(this);
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}
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else if(st == ePathBuilding)
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{
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LogInfo("path ", Name(), " is building");
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buildStarted = now;
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}
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else if(st == ePathEstablished && _status == ePathBuilding)
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{
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LogInfo("path ", Name(), " is built, took ", now - buildStarted, " ms");
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}
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else if(st == ePathTimeout && _status == ePathEstablished)
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{
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LogInfo("path ", Name(), " died");
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_status = st;
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m_PathSet->HandlePathDied(this);
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}
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else if(st == ePathEstablished && _status == ePathTimeout)
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{
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LogInfo("path ", Name(), " reanimated");
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}
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_status = st;
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}
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util::StatusObject
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PathHopConfig::ExtractStatus() const
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{
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util::StatusObject obj{{"lifetime", lifetime},
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{"router", rc.pubkey.ToHex()},
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{"txid", txID.ToHex()},
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{"rxid", rxID.ToHex()}};
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return obj;
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}
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util::StatusObject
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Path::ExtractStatus() const
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{
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auto now = llarp::time_now_ms();
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util::StatusObject obj{{"intro", intro.ExtractStatus()},
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{"lastRecvMsg", m_LastRecvMessage},
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{"lastLatencyTest", m_LastLatencyTestTime},
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{"buildStarted", buildStarted},
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{"expired", Expired(now)},
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{"expiresSoon", ExpiresSoon(now)},
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{"expiresAt", ExpireTime()},
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{"ready", IsReady()},
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{"hasExit", SupportsAnyRoles(ePathRoleExit)}};
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std::vector< util::StatusObject > hopsObj;
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std::transform(hops.begin(), hops.end(), std::back_inserter(hopsObj),
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[](const auto& hop) -> util::StatusObject {
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return hop.ExtractStatus();
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});
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obj.Put("hops", hopsObj);
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switch(_status)
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{
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case ePathBuilding:
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obj.Put("status", "building");
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break;
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case ePathEstablished:
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obj.Put("status", "established");
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break;
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case ePathTimeout:
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obj.Put("status", "timeout");
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break;
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case ePathExpired:
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obj.Put("status", "expired");
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break;
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default:
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obj.Put("status", "unknown");
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break;
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}
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return obj;
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}
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void
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Path::Tick(llarp_time_t now, AbstractRouter* r)
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{
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if(Expired(now))
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return;
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if(_status == ePathBuilding)
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{
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if(now >= buildStarted)
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{
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auto dlt = now - buildStarted;
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if(dlt >= path::build_timeout)
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{
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r->routerProfiling().MarkPathFail(this);
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EnterState(ePathExpired, now);
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return;
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}
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}
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}
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// check to see if this path is dead
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if(_status == ePathEstablished)
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{
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const auto dlt = now - m_LastLatencyTestTime;
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if(dlt > path::latency_interval && m_LastLatencyTestID == 0)
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{
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routing::PathLatencyMessage latency;
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latency.T = randint();
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m_LastLatencyTestID = latency.T;
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m_LastLatencyTestTime = now;
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SendRoutingMessage(latency, r);
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return;
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}
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if(SupportsAnyRoles(ePathRoleExit | ePathRoleSVC))
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{
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if(m_LastRecvMessage && now > m_LastRecvMessage
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&& now - m_LastRecvMessage > path::alive_timeout)
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{
|
|
// TODO: send close exit message
|
|
// r->routerProfiling().MarkPathFail(this);
|
|
// EnterState(ePathTimeout, now);
|
|
return;
|
|
}
|
|
}
|
|
if(m_LastRecvMessage && now > m_LastRecvMessage)
|
|
{
|
|
const auto delay = now - m_LastRecvMessage;
|
|
if(m_CheckForDead && m_CheckForDead(this, delay))
|
|
{
|
|
r->routerProfiling().MarkPathFail(this);
|
|
EnterState(ePathTimeout, now);
|
|
}
|
|
}
|
|
else if(dlt >= path::alive_timeout && m_LastRecvMessage == 0)
|
|
{
|
|
if(m_CheckForDead && m_CheckForDead(this, dlt))
|
|
{
|
|
r->routerProfiling().MarkPathFail(this);
|
|
EnterState(ePathTimeout, now);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
Path::HandleUpstream(const llarp_buffer_t& buf, const TunnelNonce& Y,
|
|
AbstractRouter* r)
|
|
{
|
|
TunnelNonce n = Y;
|
|
for(const auto& hop : hops)
|
|
{
|
|
r->crypto()->xchacha20(buf, hop.shared, n);
|
|
n ^= hop.nonceXOR;
|
|
}
|
|
RelayUpstreamMessage msg;
|
|
msg.X = buf;
|
|
msg.Y = Y;
|
|
msg.pathid = TXID();
|
|
if(r->SendToOrQueue(Upstream(), &msg))
|
|
return true;
|
|
LogError("send to ", Upstream(), " failed");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::Expired(llarp_time_t now) const
|
|
{
|
|
if(_status == ePathEstablished || _status == ePathTimeout)
|
|
return now >= ExpireTime();
|
|
else if(_status == ePathBuilding)
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
std::string
|
|
Path::Name() const
|
|
{
|
|
std::stringstream ss;
|
|
ss << "TX=" << TXID() << " RX=" << RXID();
|
|
if(m_PathSet)
|
|
ss << " on " << m_PathSet->Name();
|
|
return ss.str();
|
|
}
|
|
|
|
bool
|
|
Path::HandleDownstream(const llarp_buffer_t& buf, const TunnelNonce& Y,
|
|
AbstractRouter* r)
|
|
{
|
|
TunnelNonce n = Y;
|
|
for(const auto& hop : hops)
|
|
{
|
|
n ^= hop.nonceXOR;
|
|
r->crypto()->xchacha20(buf, hop.shared, n);
|
|
}
|
|
if(!HandleRoutingMessage(buf, r))
|
|
return false;
|
|
m_LastRecvMessage = r->Now();
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
Path::HandleRoutingMessage(const llarp_buffer_t& buf, AbstractRouter* r)
|
|
{
|
|
if(!r->ParseRoutingMessageBuffer(buf, this, RXID()))
|
|
{
|
|
LogWarn("Failed to parse inbound routing message");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
Path::HandleUpdateExitVerifyMessage(
|
|
const routing::UpdateExitVerifyMessage& msg, AbstractRouter* r)
|
|
{
|
|
(void)r;
|
|
if(m_UpdateExitTX && msg.T == m_UpdateExitTX)
|
|
{
|
|
if(m_ExitUpdated)
|
|
return m_ExitUpdated(this);
|
|
}
|
|
if(m_CloseExitTX && msg.T == m_CloseExitTX)
|
|
{
|
|
if(m_ExitClosed)
|
|
return m_ExitClosed(this);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::SendRoutingMessage(const routing::IMessage& msg, AbstractRouter* r)
|
|
{
|
|
std::array< byte_t, MAX_LINK_MSG_SIZE / 2 > tmp;
|
|
llarp_buffer_t buf(tmp);
|
|
// should help prevent bad paths with uninitialized members
|
|
// FIXME: Why would we get uninitialized IMessages?
|
|
if(msg.version != LLARP_PROTO_VERSION)
|
|
return false;
|
|
if(!msg.BEncode(&buf))
|
|
{
|
|
LogError("Bencode failed");
|
|
DumpBuffer(buf);
|
|
return false;
|
|
}
|
|
// make nonce
|
|
TunnelNonce N;
|
|
N.Randomize();
|
|
buf.sz = buf.cur - buf.base;
|
|
// pad smaller messages
|
|
if(buf.sz < pad_size)
|
|
{
|
|
// randomize padding
|
|
r->crypto()->randbytes(buf.cur, pad_size - buf.sz);
|
|
buf.sz = pad_size;
|
|
}
|
|
buf.cur = buf.base;
|
|
return HandleUpstream(buf, N, r);
|
|
}
|
|
|
|
bool
|
|
Path::HandlePathTransferMessage(
|
|
ABSL_ATTRIBUTE_UNUSED const routing::PathTransferMessage& msg,
|
|
ABSL_ATTRIBUTE_UNUSED AbstractRouter* r)
|
|
{
|
|
LogWarn("unwarranted path transfer message on tx=", TXID(),
|
|
" rx=", RXID());
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::HandleDataDiscardMessage(const routing::DataDiscardMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
MarkActive(r->Now());
|
|
if(m_DropHandler)
|
|
return m_DropHandler(this, msg.P, msg.S);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
Path::HandlePathConfirmMessage(
|
|
ABSL_ATTRIBUTE_UNUSED const routing::PathConfirmMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
auto now = r->Now();
|
|
if(_status == ePathBuilding)
|
|
{
|
|
// finish initializing introduction
|
|
intro.expiresAt = buildStarted + hops[0].lifetime;
|
|
|
|
r->routerProfiling().MarkPathSuccess(this);
|
|
|
|
// persist session with upstream router until the path is done
|
|
r->PersistSessionUntil(Upstream(), intro.expiresAt);
|
|
MarkActive(now);
|
|
// send path latency test
|
|
routing::PathLatencyMessage latency;
|
|
latency.T = randint();
|
|
m_LastLatencyTestID = latency.T;
|
|
m_LastLatencyTestTime = now;
|
|
return SendRoutingMessage(latency, r);
|
|
}
|
|
LogWarn("got unwarranted path confirm message on tx=", RXID(),
|
|
" rx=", RXID());
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::HandleHiddenServiceFrame(const service::ProtocolFrame& frame)
|
|
{
|
|
MarkActive(m_PathSet->Now());
|
|
return m_DataHandler && m_DataHandler(this, frame);
|
|
}
|
|
|
|
bool
|
|
Path::HandlePathLatencyMessage(const routing::PathLatencyMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
auto now = r->Now();
|
|
MarkActive(now);
|
|
if(msg.L == m_LastLatencyTestID)
|
|
{
|
|
intro.latency = now - m_LastLatencyTestTime;
|
|
m_LastLatencyTestID = 0;
|
|
EnterState(ePathEstablished, now);
|
|
if(m_BuiltHook)
|
|
m_BuiltHook(this);
|
|
m_BuiltHook = nullptr;
|
|
LogDebug("path latency is now ", intro.latency, " for ", Name());
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
LogWarn("unwarranted path latency message via ", Upstream());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
Path::HandleDHTMessage(const dht::IMessage& msg, AbstractRouter* r)
|
|
{
|
|
MarkActive(r->Now());
|
|
routing::DHTMessage reply;
|
|
if(!msg.HandleMessage(r->dht(), reply.M))
|
|
return false;
|
|
if(reply.M.size())
|
|
return SendRoutingMessage(reply, r);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
Path::HandleCloseExitMessage(const routing::CloseExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
/// allows exits to close from their end
|
|
if(SupportsAnyRoles(ePathRoleExit | ePathRoleSVC))
|
|
{
|
|
if(msg.Verify(r->crypto(), EndpointPubKey()))
|
|
{
|
|
LogInfo(Name(), " had its exit closed");
|
|
_role &= ~ePathRoleExit;
|
|
return true;
|
|
}
|
|
else
|
|
LogError(Name(), " CXM from exit with bad signature");
|
|
}
|
|
else
|
|
LogError(Name(), " unwarranted CXM");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::SendExitRequest(const routing::ObtainExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
LogInfo(Name(), " sending exit request to ", Endpoint());
|
|
m_ExitObtainTX = msg.T;
|
|
return SendRoutingMessage(msg, r);
|
|
}
|
|
|
|
bool
|
|
Path::SendExitClose(const routing::CloseExitMessage& msg, AbstractRouter* r)
|
|
{
|
|
LogInfo(Name(), " closing exit to ", Endpoint());
|
|
// mark as not exit anymore
|
|
_role &= ~ePathRoleExit;
|
|
return SendRoutingMessage(msg, r);
|
|
}
|
|
|
|
bool
|
|
Path::HandleObtainExitMessage(const routing::ObtainExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
(void)msg;
|
|
(void)r;
|
|
LogError(Name(), " got unwarranted OXM");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::HandleUpdateExitMessage(const routing::UpdateExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
(void)msg;
|
|
(void)r;
|
|
LogError(Name(), " got unwarranted UXM");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::HandleRejectExitMessage(const routing::RejectExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
if(m_ExitObtainTX && msg.T == m_ExitObtainTX)
|
|
{
|
|
if(!msg.Verify(r->crypto(), EndpointPubKey()))
|
|
{
|
|
LogError(Name(), "RXM invalid signature");
|
|
return false;
|
|
}
|
|
LogInfo(Name(), " ", Endpoint(), " Rejected exit");
|
|
MarkActive(r->Now());
|
|
return InformExitResult(msg.B);
|
|
}
|
|
LogError(Name(), " got unwarranted RXM");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::HandleGrantExitMessage(const routing::GrantExitMessage& msg,
|
|
AbstractRouter* r)
|
|
{
|
|
if(m_ExitObtainTX && msg.T == m_ExitObtainTX)
|
|
{
|
|
if(!msg.Verify(r->crypto(), EndpointPubKey()))
|
|
{
|
|
LogError(Name(), " GXM signature failed");
|
|
return false;
|
|
}
|
|
// we now can send exit traffic
|
|
_role |= ePathRoleExit;
|
|
LogInfo(Name(), " ", Endpoint(), " Granted exit");
|
|
MarkActive(r->Now());
|
|
return InformExitResult(0);
|
|
}
|
|
LogError(Name(), " got unwarranted GXM");
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
Path::InformExitResult(llarp_time_t B)
|
|
{
|
|
bool result = true;
|
|
for(const auto& hook : m_ObtainedExitHooks)
|
|
result &= hook(this, B);
|
|
m_ObtainedExitHooks.clear();
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
Path::HandleTransferTrafficMessage(
|
|
const routing::TransferTrafficMessage& msg, AbstractRouter* r)
|
|
{
|
|
// check if we can handle exit data
|
|
if(!SupportsAnyRoles(ePathRoleExit | ePathRoleSVC))
|
|
return false;
|
|
MarkActive(r->Now());
|
|
// handle traffic if we have a handler
|
|
if(!m_ExitTrafficHandler)
|
|
return false;
|
|
bool sent = msg.X.size() > 0;
|
|
for(const auto& pkt : msg.X)
|
|
{
|
|
if(pkt.size() <= 8)
|
|
return false;
|
|
uint64_t counter = bufbe64toh(pkt.data());
|
|
m_ExitTrafficHandler(
|
|
this, llarp_buffer_t(pkt.data() + 8, pkt.size() - 8), counter);
|
|
}
|
|
return sent;
|
|
}
|
|
|
|
} // namespace path
|
|
} // namespace llarp
|