mirror of
https://github.com/oxen-io/lokinet.git
synced 2024-11-13 01:10:24 +00:00
388 lines
10 KiB
C++
388 lines
10 KiB
C++
#include <service/context.hpp>
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#include <handlers/null.hpp>
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#include <handlers/tun.hpp>
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#include <router/router.hpp>
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#include <service/endpoint.hpp>
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namespace llarp
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{
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namespace service
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{
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Context::Context(llarp::Router *r) : m_Router(r)
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{
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}
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Context::~Context()
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{
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}
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bool
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Context::StopAll()
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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itr->second->Stop();
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m_Stopped.emplace_back(std::move(itr->second));
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itr = m_Endpoints.erase(itr);
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}
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return true;
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}
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void
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Context::ExtractStatus(util::StatusObject &obj) const
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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util::StatusObject sobj;
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itr->second->ExtractStatus(sobj);
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obj.PutObject(itr->first.c_str(), sobj);
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++itr;
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}
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}
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void
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Context::ForEachService(
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std::function< bool(const std::string &,
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const std::unique_ptr< Endpoint > &) >
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visit)
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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if(visit(itr->first, itr->second))
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++itr;
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else
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return;
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}
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}
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bool
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Context::RemoveEndpoint(const std::string &name)
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{
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auto itr = m_Endpoints.find(name);
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if(itr == m_Endpoints.end())
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return false;
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std::unique_ptr< Endpoint > ep = std::move(itr->second);
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m_Endpoints.erase(itr);
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ep->Stop();
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m_Stopped.emplace_back(std::move(ep));
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return true;
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}
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void
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Context::Tick(llarp_time_t now)
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{
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// erase stopped endpoints that are done
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{
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auto itr = m_Stopped.begin();
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while(itr != m_Stopped.end())
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{
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if((*itr)->ShouldRemove())
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itr = m_Stopped.erase(itr);
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else
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++itr;
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}
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}
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// tick active endpoints
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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itr->second->Tick(now);
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++itr;
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}
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}
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auto ep = getFirstEndpoint();
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if(!ep)
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return;
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std::vector< RouterID > expired;
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m_Router->nodedb()->visit([&](const RouterContact &rc) -> bool {
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if(rc.IsExpired(now))
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expired.emplace_back(rc.pubkey);
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return true;
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});
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// TODO: we need to stop looking up service nodes that are gone forever
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// how do?
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for(const auto &k : expired)
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ep->LookupRouterAnon(k);
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}
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bool
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Context::hasEndpoints()
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{
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return m_Endpoints.size() ? true : false;
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}
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llarp::service::Endpoint *
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Context::getFirstEndpoint()
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{
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if(!m_Endpoints.size())
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{
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llarp::LogError("No endpoints found");
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return nullptr;
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}
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auto itr = m_Endpoints.begin();
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if(itr == m_Endpoints.end())
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return nullptr;
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return itr->second.get();
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}
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bool
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Context::iterate(struct endpoint_iter &i)
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{
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if(!m_Endpoints.size())
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{
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llarp::LogError("No endpoints found");
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return false;
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}
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i.index = 0;
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// llarp::util::Lock lock(access);
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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i.endpoint = itr->second.get();
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if(!i.visit(&i))
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return false;
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// advance
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i.index++;
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itr++;
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}
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return true;
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}
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llarp::handlers::TunEndpoint *
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Context::getFirstTun()
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{
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llarp::service::Endpoint *endpointer = this->getFirstEndpoint();
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if(!endpointer)
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{
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return nullptr;
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}
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llarp::handlers::TunEndpoint *tunEndpoint =
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static_cast< llarp::handlers::TunEndpoint * >(endpointer);
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return tunEndpoint;
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}
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llarp_tun_io *
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Context::getRange()
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{
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llarp::handlers::TunEndpoint *tunEndpoint = this->getFirstTun();
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if(!tunEndpoint)
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{
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llarp::LogError("No tunnel endpoint found");
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return nullptr;
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}
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return &tunEndpoint->tunif;
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}
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bool
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Context::FindBestAddressFor(const llarp::AlignedBuffer< 32 > &addr,
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bool isSNode, huint32_t &ip)
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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if(itr->second->HasAddress(addr))
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{
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ip = itr->second->ObtainIPForAddr(addr, isSNode);
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return true;
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}
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++itr;
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}
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itr = m_Endpoints.find("default");
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if(itr != m_Endpoints.end())
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{
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ip = itr->second->ObtainIPForAddr(addr, isSNode);
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return true;
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}
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return false;
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}
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bool
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Context::Prefetch(const llarp::service::Address &addr)
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{
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llarp::handlers::TunEndpoint *tunEndpoint = this->getFirstTun();
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if(!tunEndpoint)
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{
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llarp::LogError("No tunnel endpoint found");
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return false;
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}
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// HiddenServiceAddresslookup *lookup = new
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// HiddenServiceEndpoint(tunEndpoint, callback, addr,
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// tunEndpoint->GenTXID());
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return tunEndpoint->EnsurePathToService(
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addr,
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[](__attribute__((unused)) Address addr,
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__attribute__((unused)) void *ctx) {},
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10000);
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}
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bool
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MapAddressAllIter(struct Context::endpoint_iter *endpointCfg)
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{
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Context::mapAddressAll_context *context =
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(Context::mapAddressAll_context *)endpointCfg->user;
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llarp::handlers::TunEndpoint *tunEndpoint =
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(llarp::handlers::TunEndpoint *)endpointCfg->endpoint;
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if(!tunEndpoint)
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{
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llarp::LogError("No tunnel endpoint found");
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return true; // still continue
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}
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return tunEndpoint->MapAddress(
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context->serviceAddr, context->localPrivateIpAddr.xtohl(), false);
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}
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bool
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Context::MapAddressAll(const llarp::service::Address &addr,
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llarp::Addr &localPrivateIpAddr)
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{
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struct Context::mapAddressAll_context context;
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context.serviceAddr = addr;
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context.localPrivateIpAddr = localPrivateIpAddr;
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struct Context::endpoint_iter i;
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i.user = &context;
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i.index = 0;
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i.visit = &MapAddressAllIter;
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return this->iterate(i);
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}
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bool
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Context::AddDefaultEndpoint(
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const std::unordered_multimap< std::string, std::string > &opts)
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{
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Config::section_values_t configOpts;
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configOpts.push_back({"type", "tun"});
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{
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auto itr = opts.begin();
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while(itr != opts.end())
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{
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configOpts.push_back({itr->first, itr->second});
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++itr;
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}
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}
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return AddEndpoint({"default", configOpts});
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}
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bool
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Context::StartAll()
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{
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auto itr = m_Endpoints.begin();
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while(itr != m_Endpoints.end())
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{
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if(!itr->second->Start())
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{
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llarp::LogError(itr->first, " failed to start");
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return false;
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}
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llarp::LogInfo(itr->first, " started");
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++itr;
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}
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return true;
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}
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bool
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Context::AddEndpoint(const Config::section_t &conf, bool autostart)
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{
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{
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auto itr = m_Endpoints.find(conf.first);
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if(itr != m_Endpoints.end())
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{
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llarp::LogError("cannot add hidden service with duplicate name: ",
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conf.first);
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return false;
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}
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}
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// extract type
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std::string endpointType = "tun";
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std::string keyfile = "";
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for(const auto &option : conf.second)
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{
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if(option.first == "type")
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endpointType = option.second;
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if(option.first == "keyfile")
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keyfile = option.second;
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}
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std::unique_ptr< llarp::service::Endpoint > service;
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static std::map< std::string,
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std::function< llarp::service::Endpoint *(
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const std::string &, llarp::Router *,
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llarp::service::Context *) > >
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endpointConstructors = {
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{"tun",
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[](const std::string &nick, llarp::Router *r,
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llarp::service::Context *c) -> llarp::service::Endpoint * {
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return new llarp::handlers::TunEndpoint(nick, r, c);
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}},
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{"null",
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[](const std::string &nick, llarp::Router *r,
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llarp::service::Context *c) -> llarp::service::Endpoint * {
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return new llarp::handlers::NullEndpoint(nick, r, c);
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}}};
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{
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// detect type
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auto itr = endpointConstructors.find(endpointType);
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if(itr == endpointConstructors.end())
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{
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llarp::LogError("no such endpoint type: ", endpointType);
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return false;
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}
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// construct
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service.reset(itr->second(conf.first, m_Router, this));
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// if ephemeral, then we need to regen key
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// if privkey file, then set it and load it
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if(keyfile != "")
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{
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service->SetOption("keyfile", keyfile);
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// load keyfile, so we have the correct name for logging
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}
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llarp::LogInfo("Establishing endpoint identity");
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service->LoadKeyFile(); // only start endpoint not tun
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// now Name() will be correct
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}
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// configure
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for(const auto &option : conf.second)
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{
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auto &k = option.first;
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if(k == "type")
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continue;
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auto &v = option.second;
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if(!service->SetOption(k, v))
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{
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llarp::LogError("failed to set ", k, "=", v,
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" for hidden service endpoint ", conf.first);
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return false;
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}
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}
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if(autostart)
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{
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// start
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if(service->Start())
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{
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llarp::LogInfo("autostarting hidden service endpoint ",
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service->Name());
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m_Endpoints.insert(std::make_pair(conf.first, std::move(service)));
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return true;
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}
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llarp::LogError("failed to start hidden service endpoint ", conf.first);
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return false;
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}
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else
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{
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llarp::LogInfo("added hidden service endpoint ", service->Name());
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m_Endpoints.insert(std::make_pair(conf.first, std::move(service)));
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return true;
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}
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}
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} // namespace service
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} // namespace llarp
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