lokinet/llarp/router/rc_lookup_handler.hpp
2020-01-17 14:54:34 -07:00

128 lines
3.5 KiB
C++

#ifndef LLARP_RC_LOOKUP_HANDLER_HPP
#define LLARP_RC_LOOKUP_HANDLER_HPP
#include <chrono>
#include <router/i_rc_lookup_handler.hpp>
#include <util/thread/threading.hpp>
#include <util/thread/thread_pool.hpp>
#include <unordered_map>
#include <set>
#include <list>
struct llarp_nodedb;
struct llarp_dht_context;
namespace llarp
{
namespace service
{
struct Context;
} // namespace service
struct ILinkManager;
struct RCLookupHandler final : public I_RCLookupHandler
{
public:
using CallbacksQueue = std::list< RCRequestCallback >;
~RCLookupHandler() override = default;
void
AddValidRouter(const RouterID &router) override LOCKS_EXCLUDED(_mutex);
void
RemoveValidRouter(const RouterID &router) override LOCKS_EXCLUDED(_mutex);
void
SetRouterWhitelist(const std::vector< RouterID > &routers) override
LOCKS_EXCLUDED(_mutex);
bool
HaveReceivedWhitelist();
void
GetRC(const RouterID &router, RCRequestCallback callback,
bool forceLookup = false) override LOCKS_EXCLUDED(_mutex);
bool
RemoteIsAllowed(const RouterID &remote) const override
LOCKS_EXCLUDED(_mutex);
bool
CheckRC(const RouterContact &rc) const override;
bool
GetRandomWhitelistRouter(RouterID &router) const override
LOCKS_EXCLUDED(_mutex);
bool
CheckRenegotiateValid(RouterContact newrc, RouterContact oldrc) override;
void
PeriodicUpdate(llarp_time_t now) override;
void
ExploreNetwork() override;
size_t
NumberOfStrictConnectRouters() const override;
void
Init(llarp_dht_context *dht, llarp_nodedb *nodedb,
std::shared_ptr< llarp::thread::ThreadPool > threadpool,
ILinkManager *linkManager, service::Context *hiddenServiceContext,
const std::set< RouterID > &strictConnectPubkeys,
const std::set< RouterContact > &bootstrapRCList,
bool useWhitelist_arg, bool isServiceNode_arg);
private:
void
HandleDHTLookupResult(RouterID remote,
const std::vector< RouterContact > &results);
bool
HavePendingLookup(RouterID remote) const LOCKS_EXCLUDED(_mutex);
bool
RemoteInBootstrap(const RouterID &remote) const;
void
FinalizeRequest(const RouterID &router, const RouterContact *const rc,
RCRequestResult result) LOCKS_EXCLUDED(_mutex);
mutable util::Mutex _mutex; // protects pendingCallbacks, whitelistRouters
llarp_dht_context *_dht = nullptr;
llarp_nodedb *_nodedb = nullptr;
std::shared_ptr< llarp::thread::ThreadPool > _threadpool = nullptr;
service::Context *_hiddenServiceContext = nullptr;
ILinkManager *_linkManager = nullptr;
/// explicit whitelist of routers we will connect to directly (not for
/// service nodes)
std::set< RouterID > _strictConnectPubkeys;
std::set< RouterContact > _bootstrapRCList;
std::set< RouterID > _bootstrapRouterIDList;
std::unordered_map< RouterID, CallbacksQueue, RouterID::Hash >
pendingCallbacks GUARDED_BY(_mutex);
bool useWhitelist = false;
bool isServiceNode = false;
std::set< RouterID > whitelistRouters GUARDED_BY(_mutex);
using TimePoint = std::chrono::steady_clock::time_point;
std::unordered_map< RouterID, TimePoint, RouterID::Hash >
_routerLookupTimes;
};
} // namespace llarp
#endif // LLARP_RC_LOOKUP_HANDLER_HPP