mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-11-15 12:13:24 +00:00
fa4471f566
- RemoteRC supplants most of the functionality throughout the code of RouterContact - Next step will be to sort out CI issues, then see if we can get rid of either LocalRC (and therefore RouterContact entirely)
539 lines
14 KiB
C++
539 lines
14 KiB
C++
#pragma once
|
|
#include <llarp/dns/server.hpp>
|
|
#include <llarp/endpoint_base.hpp>
|
|
#include <llarp/ev/ev.hpp>
|
|
#include <llarp/exit/session.hpp>
|
|
#include <llarp/net/ip_range_map.hpp>
|
|
#include <llarp/net/net.hpp>
|
|
#include <llarp/path/pathbuilder.hpp>
|
|
#include <llarp/service/address.hpp>
|
|
#include <llarp/service/auth.hpp>
|
|
#include <llarp/service/endpoint_types.hpp>
|
|
#include <llarp/service/identity.hpp>
|
|
#include <llarp/service/pendingbuffer.hpp>
|
|
#include <llarp/service/protocol.hpp>
|
|
#include <llarp/service/protocol_type.hpp>
|
|
#include <llarp/service/session.hpp>
|
|
#include <llarp/util/compare_ptr.hpp>
|
|
#include <llarp/vpn/egres_packet_router.hpp>
|
|
|
|
#include <oxenc/variant.h>
|
|
|
|
#include <optional>
|
|
#include <unordered_map>
|
|
#include <variant>
|
|
|
|
// minimum time between introset shifts
|
|
#ifndef MIN_SHIFT_INTERVAL
|
|
#define MIN_SHIFT_INTERVAL 5s
|
|
#endif
|
|
|
|
namespace llarp
|
|
{
|
|
namespace quic
|
|
{
|
|
class TunnelManager;
|
|
}
|
|
|
|
namespace service
|
|
{
|
|
struct AsyncKeyExchange;
|
|
|
|
struct Context;
|
|
struct EndpointState;
|
|
struct OutboundContext;
|
|
|
|
/// minimum interval for publishing introsets
|
|
inline constexpr auto IntrosetPublishInterval = path::INTRO_PATH_SPREAD / 2;
|
|
|
|
/// how agressively should we retry publishing introset on failure
|
|
inline constexpr auto IntrosetPublishRetryCooldown = 1s;
|
|
|
|
/// how aggressively should we retry looking up introsets
|
|
inline constexpr auto IntrosetLookupCooldown = 250ms;
|
|
|
|
/// number of unique snodes we want to talk to do to ons lookups
|
|
inline constexpr size_t MIN_ONS_LOOKUP_ENDPOINTS = 2;
|
|
|
|
inline constexpr size_t MAX_ONS_LOOKUP_ENDPOINTS = 7;
|
|
|
|
// TODO: delete this, it is copied from the late llarp/service/handler.hpp
|
|
struct RecvDataEvent
|
|
{
|
|
path::Path_ptr fromPath;
|
|
PathID_t pathid;
|
|
std::shared_ptr<ProtocolMessage> msg;
|
|
};
|
|
|
|
struct Endpoint : public path::Builder, public EndpointBase
|
|
// public std::enable_shared_from_this<Endpoint>
|
|
{
|
|
Endpoint(Router* r, Context* parent);
|
|
~Endpoint() override;
|
|
|
|
/// return true if we are ready to recv packets from the void.
|
|
/// really should be ReadyForInboundTraffic() but the diff is HUGE and we need to rewrite this
|
|
/// component anyways.
|
|
bool
|
|
is_ready() const;
|
|
|
|
void
|
|
QueueRecvData(RecvDataEvent ev);
|
|
|
|
/// return true if our introset has expired intros
|
|
bool
|
|
IntrosetIsStale() const;
|
|
|
|
/// construct parameters for notify hooks
|
|
virtual std::unordered_map<std::string, std::string>
|
|
NotifyParams() const;
|
|
|
|
virtual util::StatusObject
|
|
ExtractStatus() const;
|
|
|
|
virtual bool
|
|
Configure(const NetworkConfig& conf, const DnsConfig& dnsConf);
|
|
|
|
void
|
|
Tick(llarp_time_t now) override;
|
|
|
|
/// return true if we have a resolvable ip address
|
|
virtual bool
|
|
HasIfAddr() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
virtual std::string
|
|
GetIfName() const = 0;
|
|
|
|
std::optional<ConvoTag>
|
|
GetBestConvoTagFor(std::variant<Address, RouterID> addr) const override;
|
|
|
|
/// get our ifaddr if it is set
|
|
virtual huint128_t
|
|
GetIfAddr() const
|
|
{
|
|
return {0};
|
|
}
|
|
|
|
/// get the exit policy for our exit if we have one
|
|
/// override me
|
|
virtual std::optional<net::TrafficPolicy>
|
|
GetExitPolicy() const
|
|
{
|
|
return std::nullopt;
|
|
};
|
|
|
|
/// get the ip ranges we claim to own
|
|
/// override me
|
|
virtual std::set<IPRange>
|
|
GetOwnedRanges() const
|
|
{
|
|
return {};
|
|
};
|
|
|
|
virtual void
|
|
Thaw(){};
|
|
|
|
void
|
|
ResetInternalState() override;
|
|
|
|
/// loop (via router)
|
|
/// use when sending any data on a path
|
|
const EventLoop_ptr&
|
|
Loop() override;
|
|
|
|
Router*
|
|
router();
|
|
|
|
virtual bool
|
|
LoadKeyFile();
|
|
|
|
virtual bool
|
|
Start();
|
|
|
|
std::string
|
|
Name() const override;
|
|
|
|
AddressVariant_t
|
|
LocalAddress() const override;
|
|
|
|
std::optional<SendStat>
|
|
GetStatFor(AddressVariant_t remote) const override;
|
|
|
|
std::unordered_set<AddressVariant_t>
|
|
AllRemoteEndpoints() const override;
|
|
|
|
bool
|
|
ShouldPublishDescriptors(llarp_time_t now) const override;
|
|
|
|
void
|
|
SRVRecordsChanged() override;
|
|
|
|
void
|
|
HandlePathDied(path::Path_ptr p) override;
|
|
|
|
virtual vpn::EgresPacketRouter*
|
|
EgresPacketRouter()
|
|
{
|
|
return nullptr;
|
|
};
|
|
|
|
virtual vpn::NetworkInterface*
|
|
GetVPNInterface()
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
publish_introset(const EncryptedIntroSet& i);
|
|
|
|
bool
|
|
HandleHiddenServiceFrame(path::Path_ptr p, const service::ProtocolFrameMessage& msg);
|
|
|
|
void
|
|
SetEndpointAuth(std::shared_ptr<IAuthPolicy> policy);
|
|
|
|
/// sets how we authenticate with remote address
|
|
void
|
|
SetAuthInfoForEndpoint(Address remote, AuthInfo info);
|
|
|
|
virtual huint128_t ObtainIPForAddr(std::variant<Address, RouterID>) = 0;
|
|
|
|
/// get a key for ip address
|
|
virtual std::optional<std::variant<service::Address, RouterID>>
|
|
ObtainAddrForIP(huint128_t ip) const = 0;
|
|
|
|
// virtual bool
|
|
// HasServiceAddress(const AlignedBuffer< 32 >& addr) const = 0;
|
|
|
|
/// return true if we have a pending job to build to a hidden service but
|
|
/// it's not done yet
|
|
bool
|
|
HasPendingPathToService(const Address& remote) const;
|
|
|
|
bool
|
|
HandleDataMessage(
|
|
path::Path_ptr path, const PathID_t from, std::shared_ptr<ProtocolMessage> msg);
|
|
|
|
/// handle packet io from service node or hidden service to frontend
|
|
virtual bool
|
|
HandleInboundPacket(
|
|
const ConvoTag tag, const llarp_buffer_t& pkt, ProtocolType t, uint64_t seqno) = 0;
|
|
|
|
// virtual bool
|
|
// HandleWriteIPPacket(const llarp_buffer_t& pkt,
|
|
// std::function< huint128_t(void) > getFromIP) = 0;
|
|
|
|
bool
|
|
ProcessDataMessage(std::shared_ptr<ProtocolMessage> msg);
|
|
|
|
/// ensure that we know a router, looks up if it doesn't
|
|
void
|
|
EnsureRouterIsKnown(const RouterID& router);
|
|
|
|
// "find router" via closest path
|
|
bool
|
|
lookup_router(RouterID router, std::function<void(oxen::quic::message)> func = nullptr);
|
|
|
|
// "find name"
|
|
void
|
|
lookup_name(
|
|
std::string name, std::function<void(oxen::quic::message)> func = nullptr) override;
|
|
|
|
// "find introset?"
|
|
void
|
|
LookupServiceAsync(
|
|
std::string name,
|
|
std::string service,
|
|
std::function<void(std::vector<dns::SRVData>)> resultHandler) override;
|
|
|
|
/// called on event loop pump
|
|
virtual void
|
|
Pump(llarp_time_t now);
|
|
|
|
/// stop this endpoint
|
|
bool
|
|
Stop() override;
|
|
|
|
const Identity&
|
|
GetIdentity() const
|
|
{
|
|
return _identity;
|
|
}
|
|
|
|
void
|
|
MapExitRange(IPRange range, service::Address exit);
|
|
|
|
void
|
|
UnmapExitRange(IPRange range);
|
|
|
|
void
|
|
UnmapRangeByExit(IPRange range, std::string exit);
|
|
|
|
void
|
|
map_exit(
|
|
std::string name,
|
|
std::string token,
|
|
std::vector<IPRange> ranges,
|
|
std::function<void(bool, std::string)> result);
|
|
|
|
void
|
|
HandlePathBuilt(path::Path_ptr path) override;
|
|
|
|
bool
|
|
HandleDataDrop(path::Path_ptr p, const PathID_t& dst, uint64_t s);
|
|
|
|
bool
|
|
CheckPathIsDead(path::Path_ptr p, llarp_time_t latency);
|
|
|
|
using PendingBufferQueue = std::deque<PendingBuffer>;
|
|
|
|
size_t
|
|
RemoveAllConvoTagsFor(service::Address remote);
|
|
|
|
bool
|
|
WantsOutboundSession(const Address&) const;
|
|
|
|
/// this MUST be called if you want to call EnsurePathTo on the given address
|
|
void MarkAddressOutbound(service::Address) override;
|
|
|
|
void
|
|
BlacklistSNode(const RouterID snode) override;
|
|
|
|
/// maybe get an endpoint variant given its convo tag
|
|
std::optional<std::variant<Address, RouterID>>
|
|
GetEndpointWithConvoTag(ConvoTag t) const override;
|
|
|
|
bool
|
|
HasConvoTag(const ConvoTag& t) const;
|
|
|
|
bool
|
|
ShouldBuildMore(llarp_time_t now) const override;
|
|
|
|
virtual llarp_time_t
|
|
PathAlignmentTimeout() const
|
|
{
|
|
constexpr auto DefaultPathAlignmentTimeout = 30s;
|
|
return DefaultPathAlignmentTimeout;
|
|
}
|
|
|
|
bool
|
|
EnsurePathTo(
|
|
std::variant<Address, RouterID> addr,
|
|
std::function<void(std::optional<ConvoTag>)> hook,
|
|
llarp_time_t timeout) override;
|
|
|
|
static constexpr auto DefaultPathEnsureTimeout = 2s;
|
|
|
|
/// return false if we have already called this function before for this
|
|
/// address
|
|
bool
|
|
EnsurePathToService(
|
|
const Address remote,
|
|
std::function<void(Address, OutboundContext*)> h,
|
|
llarp_time_t timeoutMS = DefaultPathEnsureTimeout);
|
|
|
|
void
|
|
InformPathToService(const Address remote, OutboundContext* ctx);
|
|
|
|
/// ensure a path to a service node by public key
|
|
bool
|
|
EnsurePathToSNode(
|
|
const RouterID remote,
|
|
std::function<void(const RouterID, exit::BaseSession_ptr, ConvoTag)> h);
|
|
|
|
/// return true if this endpoint is trying to lookup this router right now
|
|
bool
|
|
HasPendingRouterLookup(const RouterID remote) const;
|
|
|
|
bool
|
|
HasPathToSNode(const RouterID remote) const;
|
|
|
|
bool
|
|
HasFlowToService(const Address remote) const;
|
|
|
|
void
|
|
PutSenderFor(const ConvoTag& tag, const ServiceInfo& info, bool inbound);
|
|
|
|
bool
|
|
HasInboundConvo(const Address& addr) const;
|
|
|
|
bool
|
|
HasOutboundConvo(const Address& addr) const;
|
|
|
|
bool
|
|
GetCachedSessionKeyFor(const ConvoTag& remote, SharedSecret& secret) const;
|
|
|
|
void
|
|
PutCachedSessionKeyFor(const ConvoTag& remote, const SharedSecret& secret);
|
|
|
|
bool
|
|
GetSenderFor(const ConvoTag& remote, ServiceInfo& si) const;
|
|
|
|
void
|
|
PutIntroFor(const ConvoTag& remote, const Introduction& intro);
|
|
|
|
bool
|
|
GetIntroFor(const ConvoTag& remote, Introduction& intro) const;
|
|
|
|
void
|
|
RemoveConvoTag(const ConvoTag& remote);
|
|
|
|
void
|
|
ConvoTagTX(const ConvoTag& remote);
|
|
|
|
void
|
|
ConvoTagRX(const ConvoTag& remote);
|
|
|
|
void
|
|
PutReplyIntroFor(const ConvoTag& remote, const Introduction& intro);
|
|
|
|
bool
|
|
GetReplyIntroFor(const ConvoTag& remote, Introduction& intro) const;
|
|
|
|
bool
|
|
GetConvoTagsForService(const Address& si, std::set<ConvoTag>& tag) const;
|
|
|
|
void
|
|
PutNewOutboundContext(const IntroSet& introset, llarp_time_t timeLeftToAlign);
|
|
|
|
std::optional<uint64_t>
|
|
GetSeqNoForConvo(const ConvoTag& tag);
|
|
|
|
/// count unique endpoints we are talking to
|
|
size_t
|
|
UniqueEndpoints() const;
|
|
|
|
bool
|
|
HasExit() const;
|
|
|
|
std::optional<std::vector<RemoteRC>>
|
|
GetHopsForBuild() override;
|
|
|
|
std::optional<std::vector<RemoteRC>>
|
|
GetHopsForBuildWithEndpoint(RouterID endpoint);
|
|
|
|
void
|
|
AsyncProcessAuthMessage(
|
|
std::shared_ptr<ProtocolMessage> msg, std::function<void(std::string, bool)> hook);
|
|
|
|
void
|
|
SendAuthResult(
|
|
path::Path_ptr path, PathID_t replyPath, ConvoTag tag, std::string result, bool success);
|
|
|
|
uint64_t
|
|
GenTXID();
|
|
|
|
void
|
|
ResetConvoTag(ConvoTag tag, path::Path_ptr path, PathID_t from);
|
|
|
|
const std::set<RouterID>&
|
|
SnodeBlacklist() const;
|
|
|
|
// Looks up the ConvoTag and, if it exists, calls SendToOrQueue to send it to a remote client
|
|
// or a snode (or nothing, if the convo tag is unknown).
|
|
bool
|
|
send_to(ConvoTag tag, std::string payload) override;
|
|
|
|
std::optional<AuthInfo>
|
|
MaybeGetAuthInfoForEndpoint(service::Address addr);
|
|
|
|
/// Returns a pointer to the quic::Tunnel object handling quic connections for this endpoint.
|
|
/// Returns nullptr if quic is not supported.
|
|
link::TunnelManager*
|
|
GetQUICTunnel() override;
|
|
|
|
protected:
|
|
/// parent context that owns this endpoint
|
|
Context* const context;
|
|
|
|
virtual bool
|
|
SupportsV6() const = 0;
|
|
|
|
void
|
|
regen_and_publish_introset();
|
|
|
|
IServiceLookup*
|
|
GenerateLookupByTag(const Tag& tag);
|
|
|
|
void
|
|
PrefetchServicesByTag(const Tag& tag);
|
|
|
|
private:
|
|
bool
|
|
DoNetworkIsolation(bool failed);
|
|
|
|
virtual bool
|
|
SetupNetworking()
|
|
{
|
|
// XXX: override me
|
|
return true;
|
|
}
|
|
|
|
virtual bool
|
|
IsolationFailed()
|
|
{
|
|
// XXX: override me
|
|
return false;
|
|
}
|
|
|
|
/// return true if we are ready to do outbound and inbound traffic
|
|
bool
|
|
ReadyForNetwork() const;
|
|
|
|
protected:
|
|
bool
|
|
ReadyToDoLookup(size_t num_paths) const;
|
|
|
|
auto
|
|
GetUniqueEndpointsForLookup() const;
|
|
|
|
Identity _identity;
|
|
net::IPRangeMap<service::Address> _exit_map;
|
|
bool _publish_introset = true;
|
|
std::unique_ptr<EndpointState> _state;
|
|
std::shared_ptr<IAuthPolicy> _auth_policy;
|
|
std::unordered_map<Address, AuthInfo> _remote_auth_infos;
|
|
std::unique_ptr<link::TunnelManager> _tunnel_manager;
|
|
|
|
/// (ons name, optional exit range, optional auth info) for looking up on startup
|
|
std::unordered_map<std::string, std::pair<std::optional<IPRange>, std::optional<AuthInfo>>>
|
|
_startup_ons_mappings;
|
|
|
|
RecvPacketQueue_t _inbound_queue;
|
|
|
|
public:
|
|
SendMessageEventQueue _send_queue;
|
|
|
|
private:
|
|
llarp_time_t _last_introset_regen_attempt = 0s;
|
|
|
|
protected:
|
|
void
|
|
FlushRecvData();
|
|
|
|
friend struct EndpointUtil;
|
|
|
|
const IntroSet&
|
|
intro_set() const;
|
|
IntroSet&
|
|
intro_set();
|
|
|
|
const std::unordered_map<ConvoTag, Session>&
|
|
Sessions() const;
|
|
std::unordered_map<ConvoTag, Session>&
|
|
Sessions();
|
|
|
|
thread::Queue<RecvDataEvent> _recv_event_queue;
|
|
|
|
/// for rate limiting introset lookups
|
|
util::DecayingHashSet<Address> _introset_lookup_filter;
|
|
};
|
|
|
|
using Endpoint_ptr = std::shared_ptr<Endpoint>;
|
|
|
|
} // namespace service
|
|
} // namespace llarp
|