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610 lines
13 KiB
C++
610 lines
13 KiB
C++
#pragma once
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#include "abstractrouter.hpp"
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#include <llarp/bootstrap.hpp>
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#include <llarp/config/config.hpp>
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#include <llarp/config/key_manager.hpp>
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#include <llarp/constants/link_layer.hpp>
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#include <llarp/crypto/types.hpp>
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#include <llarp/ev/ev.hpp>
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#include <llarp/exit/context.hpp>
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#include <llarp/handlers/tun.hpp>
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#include <llarp/link/link_manager.hpp>
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#include <llarp/link/server.hpp>
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#include <llarp/messages/link_message_parser.hpp>
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#include <llarp/nodedb.hpp>
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#include <llarp/path/path_context.hpp>
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#include <llarp/peerstats/peer_db.hpp>
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#include <llarp/profiling.hpp>
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#include <llarp/router_contact.hpp>
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#include "outbound_message_handler.hpp"
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#include "outbound_session_maker.hpp"
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#include "rc_gossiper.hpp"
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#include "rc_lookup_handler.hpp"
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#include "route_poker.hpp"
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#include <llarp/routing/handler.hpp>
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#include <llarp/routing/message_parser.hpp>
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#include <llarp/rpc/lokid_rpc_client.hpp>
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#include <llarp/rpc/rpc_server.hpp>
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#include <llarp/service/context.hpp>
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#include <stdexcept>
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#include <llarp/util/buffer.hpp>
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#include <llarp/util/fs.hpp>
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#include <llarp/util/mem.hpp>
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#include <llarp/util/status.hpp>
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#include <llarp/util/str.hpp>
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#include <llarp/util/time.hpp>
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#include <llarp/util/service_manager.hpp>
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#include <functional>
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#include <list>
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#include <map>
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#include <memory>
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#include <set>
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#include <unordered_map>
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#include <vector>
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#include <oxenmq/address.h>
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namespace llarp
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{
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struct Router : public AbstractRouter
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{
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llarp_time_t _lastPump = 0s;
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bool ready;
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// transient iwp encryption key
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fs::path transport_keyfile;
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// long term identity key
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fs::path ident_keyfile;
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fs::path encryption_keyfile;
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// path to write our self signed rc to
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fs::path our_rc_file;
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// use file based logging?
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bool m_UseFileLogging = false;
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// our router contact
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RouterContact _rc;
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/// should we obey the service node whitelist?
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bool whitelistRouters = false;
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LMQ_ptr m_lmq;
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path::BuildLimiter m_PathBuildLimiter;
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std::shared_ptr<EventLoopWakeup> m_Pump;
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path::BuildLimiter&
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pathBuildLimiter() override
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{
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return m_PathBuildLimiter;
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}
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const llarp::net::Platform&
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Net() const override;
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const LMQ_ptr&
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lmq() const override
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{
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return m_lmq;
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}
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const std::shared_ptr<rpc::LokidRpcClient>&
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RpcClient() const override
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{
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return m_lokidRpcClient;
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}
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llarp_dht_context*
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dht() const override
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{
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return _dht;
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}
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std::optional<std::variant<nuint32_t, nuint128_t>>
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OurPublicIP() const override;
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util::StatusObject
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ExtractStatus() const override;
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util::StatusObject
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ExtractSummaryStatus() const override;
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const std::shared_ptr<NodeDB>&
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nodedb() const override
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{
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return _nodedb;
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}
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const path::PathContext&
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pathContext() const override
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{
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return paths;
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}
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path::PathContext&
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pathContext() override
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{
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return paths;
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}
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const RouterContact&
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rc() const override
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{
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return _rc;
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}
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void
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ModifyOurRC(std::function<std::optional<RouterContact>(RouterContact)> modify) override;
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void
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SetRouterWhitelist(
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const std::vector<RouterID>& whitelist,
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const std::vector<RouterID>& greylist,
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const std::vector<RouterID>& unfunded) override;
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std::unordered_set<RouterID>
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GetRouterWhitelist() const override
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{
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return _rcLookupHandler.Whitelist();
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}
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exit::Context&
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exitContext() override
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{
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return _exitContext;
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}
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const std::shared_ptr<KeyManager>&
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keyManager() const override
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{
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return m_keyManager;
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}
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const SecretKey&
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identity() const override
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{
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return _identity;
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}
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const SecretKey&
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encryption() const override
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{
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return _encryption;
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}
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Profiling&
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routerProfiling() override
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{
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return _routerProfiling;
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}
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const EventLoop_ptr&
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loop() const override
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{
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return _loop;
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}
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vpn::Platform*
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GetVPNPlatform() const override
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{
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return _vpnPlatform.get();
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}
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void
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QueueWork(std::function<void(void)> func) override;
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void
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QueueDiskIO(std::function<void(void)> func) override;
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/// return true if we look like we are a decommissioned service node
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bool
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LooksDecommissioned() const;
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/// return true if we look like we are a registered, fully-staked service node (either active or
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/// decommissioned). This condition determines when we are allowed to (and attempt to) connect
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/// to other peers when running as a service node.
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bool
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LooksFunded() const;
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/// return true if we a registered service node; not that this only requires a partial stake,
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/// and does not imply that this service node is *active* or fully funded.
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bool
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LooksRegistered() const;
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/// return true if we look like we are allowed and able to test other routers
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bool
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ShouldTestOtherRouters() const;
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std::optional<SockAddr> _ourAddress;
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EventLoop_ptr _loop;
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std::shared_ptr<vpn::Platform> _vpnPlatform;
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path::PathContext paths;
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exit::Context _exitContext;
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SecretKey _identity;
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SecretKey _encryption;
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llarp_dht_context* _dht = nullptr;
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std::shared_ptr<NodeDB> _nodedb;
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llarp_time_t _startedAt;
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const oxenmq::TaggedThreadID m_DiskThread;
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llarp_time_t
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Uptime() const override;
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bool
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Sign(Signature& sig, const llarp_buffer_t& buf) const override;
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/// how often do we resign our RC? milliseconds.
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// TODO: make configurable
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llarp_time_t rcRegenInterval = 1h;
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// should we be sending padded messages every interval?
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bool sendPadding = false;
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LinkMessageParser inbound_link_msg_parser;
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routing::InboundMessageParser inbound_routing_msg_parser;
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service::Context _hiddenServiceContext;
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service::Context&
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hiddenServiceContext() override
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{
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return _hiddenServiceContext;
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}
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const service::Context&
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hiddenServiceContext() const override
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{
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return _hiddenServiceContext;
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}
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llarp_time_t _lastTick = 0s;
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std::function<void(void)> _onDown;
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void
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SetDownHook(std::function<void(void)> hook) override
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{
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_onDown = hook;
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}
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bool
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LooksAlive() const override
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{
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const llarp_time_t now = Now();
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return now <= _lastTick || (now - _lastTick) <= llarp_time_t{30000};
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}
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/// bootstrap RCs
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BootstrapList bootstrapRCList;
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const std::shared_ptr<RoutePoker>&
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routePoker() const override
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{
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return m_RoutePoker;
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}
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std::shared_ptr<RoutePoker> m_RoutePoker;
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void
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TriggerPump() override;
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void
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PumpLL();
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const oxenmq::address DefaultRPCBindAddr = oxenmq::address::tcp("127.0.0.1", 1190);
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bool enableRPCServer = false;
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oxenmq::address rpcBindAddr = DefaultRPCBindAddr;
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std::unique_ptr<rpc::RpcServer> m_RPCServer;
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const llarp_time_t _randomStartDelay;
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std::shared_ptr<rpc::LokidRpcClient> m_lokidRpcClient;
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oxenmq::address lokidRPCAddr;
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Profiling _routerProfiling;
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fs::path _profilesFile;
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OutboundMessageHandler _outboundMessageHandler;
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OutboundSessionMaker _outboundSessionMaker;
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LinkManager _linkManager;
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RCLookupHandler _rcLookupHandler;
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RCGossiper _rcGossiper;
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std::string
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status_line() override;
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using Clock_t = std::chrono::steady_clock;
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using TimePoint_t = Clock_t::time_point;
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TimePoint_t m_NextExploreAt;
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IOutboundMessageHandler&
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outboundMessageHandler() override
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{
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return _outboundMessageHandler;
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}
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IOutboundSessionMaker&
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outboundSessionMaker() override
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{
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return _outboundSessionMaker;
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}
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ILinkManager&
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linkManager() override
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{
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return _linkManager;
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}
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I_RCLookupHandler&
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rcLookupHandler() override
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{
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return _rcLookupHandler;
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}
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std::shared_ptr<PeerDb>
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peerDb() override
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{
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return m_peerDb;
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}
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inline int
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OutboundUDPSocket() const override
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{
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return m_OutboundUDPSocket;
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}
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void
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GossipRCIfNeeded(const RouterContact rc) override;
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explicit Router(EventLoop_ptr loop, std::shared_ptr<vpn::Platform> vpnPlatform);
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~Router() override;
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bool
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HandleRecvLinkMessageBuffer(ILinkSession* from, const llarp_buffer_t& msg) override;
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void
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InitInboundLinks();
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void
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InitOutboundLinks();
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bool
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GetRandomGoodRouter(RouterID& r) override;
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/// initialize us as a service node
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/// return true on success
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bool
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InitServiceNode();
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bool
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IsRunning() const override;
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/// return true if we are running in service node mode
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bool
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IsServiceNode() const override;
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std::optional<std::string>
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OxendErrorState() const override;
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void
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Close();
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bool
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Configure(std::shared_ptr<Config> conf, bool isSNode, std::shared_ptr<NodeDB> nodedb) override;
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bool
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StartRpcServer() override;
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void
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Freeze() override;
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void
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Thaw() override;
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bool
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Run() override;
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/// stop running the router logic gracefully
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void
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Stop() override;
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/// non graceful stop router
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void
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Die() override;
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/// close all sessions and shutdown all links
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void
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StopLinks();
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void
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PersistSessionUntil(const RouterID& remote, llarp_time_t until) override;
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bool
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EnsureIdentity();
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bool
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EnsureEncryptionKey();
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bool
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SessionToRouterAllowed(const RouterID& router) const override;
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bool
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PathToRouterAllowed(const RouterID& router) const override;
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void
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HandleSaveRC() const;
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bool
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SaveRC();
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/// return true if we are a client with an exit configured
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bool
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HasClientExit() const override;
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const byte_t*
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pubkey() const override
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{
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return seckey_topublic(_identity);
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}
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void
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try_connect(fs::path rcfile);
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bool
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TryConnectAsync(RouterContact rc, uint16_t tries) override;
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/// send to remote router or queue for sending
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/// returns false on overflow
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/// returns true on successful queue
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/// NOT threadsafe
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/// MUST be called in the logic thread
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bool
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SendToOrQueue(
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const RouterID& remote, const ILinkMessage& msg, SendStatusHandler handler) override;
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void
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ForEachPeer(std::function<void(const ILinkSession*, bool)> visit, bool randomize = false)
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const override;
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void
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ForEachPeer(std::function<void(ILinkSession*)> visit);
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bool IsBootstrapNode(RouterID) const override;
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/// check if newRc matches oldRC and update local rc for this remote contact
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/// if valid
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/// returns true on valid and updated
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/// returns false otherwise
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bool
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CheckRenegotiateValid(RouterContact newRc, RouterContact oldRC) override;
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/// called by link when a remote session has no more sessions open
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void
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SessionClosed(RouterID remote) override;
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/// called by link when an unestablished connection times out
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void
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ConnectionTimedOut(ILinkSession* session);
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/// called by link when session is fully established
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bool
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ConnectionEstablished(ILinkSession* session, bool inbound);
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/// call internal router ticker
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void
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Tick();
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llarp_time_t
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Now() const override
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{
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return llarp::time_now_ms();
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}
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/// parse a routing message in a buffer and handle it with a handler if
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/// successful parsing return true on parse and handle success otherwise
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/// return false
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bool
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ParseRoutingMessageBuffer(
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const llarp_buffer_t& buf, routing::IMessageHandler* h, const PathID_t& rxid) override;
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void
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ConnectToRandomRouters(int N) override;
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/// count the number of unique service nodes connected via pubkey
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size_t
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NumberOfConnectedRouters() const override;
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/// count the number of unique clients connected by pubkey
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size_t
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NumberOfConnectedClients() const override;
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bool
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GetRandomConnectedRouter(RouterContact& result) const override;
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void
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HandleDHTLookupForExplore(RouterID remote, const std::vector<RouterContact>& results) override;
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void
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LookupRouter(RouterID remote, RouterLookupHandler resultHandler) override;
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bool
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HasSessionTo(const RouterID& remote) const override;
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std::string
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ShortName() const override;
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uint32_t
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NextPathBuildNumber() override;
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void
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AfterStopLinks();
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void
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AfterStopIssued();
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std::shared_ptr<Config> m_Config;
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std::shared_ptr<Config>
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GetConfig() const override
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{
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return m_Config;
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}
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int m_OutboundUDPSocket = -1;
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private:
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std::atomic<bool> _stopping;
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std::atomic<bool> _running;
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bool m_isServiceNode = false;
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// Delay warning about being decommed/dereged until we've had enough time to sync up with oxend
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static constexpr auto DECOMM_WARNING_STARTUP_DELAY = 15s;
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llarp_time_t m_LastStatsReport = 0s;
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llarp_time_t m_NextDecommissionWarn = time_now_ms() + DECOMM_WARNING_STARTUP_DELAY;
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std::shared_ptr<llarp::KeyManager> m_keyManager;
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std::shared_ptr<PeerDb> m_peerDb;
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uint32_t path_build_count = 0;
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consensus::reachability_testing m_routerTesting;
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bool
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ShouldReportStats(llarp_time_t now) const;
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void
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ReportStats();
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bool
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UpdateOurRC(bool rotateKeys = false);
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bool
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FromConfig(const Config& conf);
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void
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MessageSent(const RouterID& remote, SendStatus status);
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bool
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TooFewPeers() const;
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protected:
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virtual void
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HandleRouterEvent(tooling::RouterEventPtr event) const override;
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virtual bool
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disableGossipingRC_TestingOnly()
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{
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return false;
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};
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};
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} // namespace llarp
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