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OverlayImpl.cpp
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//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2012, 2013 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include <ripple/app/ledger/LedgerMaster.h>
#include <ripple/app/misc/HashRouter.h>
#include <ripple/app/misc/NetworkOPs.h>
#include <ripple/app/misc/ValidatorList.h>
#include <ripple/app/misc/ValidatorSite.h>
#include <ripple/app/rdb/RelationalDatabase.h>
#include <ripple/app/rdb/Wallet.h>
#include <ripple/basics/base64.h>
#include <ripple/basics/make_SSLContext.h>
#include <ripple/basics/random.h>
#include <ripple/beast/core/LexicalCast.h>
#include <ripple/nodestore/DatabaseShard.h>
#include <ripple/overlay/Cluster.h>
#include <ripple/overlay/impl/ConnectAttempt.h>
#include <ripple/overlay/impl/PeerImp.h>
#include <ripple/overlay/predicates.h>
#include <ripple/peerfinder/make_Manager.h>
#include <ripple/rpc/handlers/GetCounts.h>
#include <ripple/rpc/json_body.h>
#include <ripple/server/SimpleWriter.h>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/utility/in_place_factory.hpp>
namespace ripple {
namespace CrawlOptions {
enum {
Disabled = 0,
Overlay = (1 << 0),
ServerInfo = (1 << 1),
ServerCounts = (1 << 2),
Unl = (1 << 3)
};
}
//------------------------------------------------------------------------------
OverlayImpl::Child::Child(OverlayImpl& overlay) : overlay_(overlay)
{
}
OverlayImpl::Child::~Child()
{
overlay_.remove(*this);
}
//------------------------------------------------------------------------------
OverlayImpl::Timer::Timer(OverlayImpl& overlay)
: Child(overlay), timer_(overlay_.io_service_)
{
}
void
OverlayImpl::Timer::stop()
{
// This method is only ever called from the same strand that calls
// Timer::on_timer, ensuring they never execute concurrently.
stopping_ = true;
timer_.cancel();
}
void
OverlayImpl::Timer::async_wait()
{
timer_.expires_after(std::chrono::seconds(1));
timer_.async_wait(overlay_.strand_.wrap(std::bind(
&Timer::on_timer, shared_from_this(), std::placeholders::_1)));
}
void
OverlayImpl::Timer::on_timer(error_code ec)
{
if (ec || stopping_)
{
if (ec && ec != boost::asio::error::operation_aborted)
{
JLOG(overlay_.journal_.error()) << "on_timer: " << ec.message();
}
return;
}
overlay_.m_peerFinder->once_per_second();
overlay_.sendEndpoints();
overlay_.autoConnect();
if (overlay_.app_.config().TX_REDUCE_RELAY_ENABLE)
overlay_.sendTxQueue();
if ((++overlay_.timer_count_ % Tuning::checkIdlePeers) == 0)
overlay_.deleteIdlePeers();
async_wait();
}
//------------------------------------------------------------------------------
OverlayImpl::OverlayImpl(
Application& app,
Setup const& setup,
ServerHandler& serverHandler,
Resource::Manager& resourceManager,
Resolver& resolver,
boost::asio::io_service& io_service,
BasicConfig const& config,
beast::insight::Collector::ptr const& collector)
: app_(app)
, io_service_(io_service)
, work_(std::in_place, std::ref(io_service_))
, strand_(io_service_)
, setup_(setup)
, journal_(app_.journal("Overlay"))
, serverHandler_(serverHandler)
, m_resourceManager(resourceManager)
, m_peerFinder(PeerFinder::make_Manager(
io_service,
stopwatch(),
app_.journal("PeerFinder"),
config,
collector))
, m_resolver(resolver)
, next_id_(1)
, timer_count_(0)
, slots_(app.logs(), *this)
, m_stats(
std::bind(&OverlayImpl::collect_metrics, this),
collector,
[counts = m_traffic.getCounts(), collector]() {
std::vector<TrafficGauges> ret;
ret.reserve(counts.size());
for (size_t i = 0; i < counts.size(); ++i)
{
ret.push_back(TrafficGauges(counts[i].name, collector));
}
return ret;
}())
{
beast::PropertyStream::Source::add(m_peerFinder.get());
}
Handoff
OverlayImpl::onHandoff(
std::unique_ptr<stream_type>&& stream_ptr,
http_request_type&& request,
endpoint_type remote_endpoint)
{
auto const id = next_id_++;
beast::WrappedSink sink(app_.logs()["Peer"], makePrefix(id));
beast::Journal journal(sink);
Handoff handoff;
if (processRequest(request, handoff))
return handoff;
if (!isPeerUpgrade(request))
return handoff;
handoff.moved = true;
JLOG(journal.debug()) << "Peer connection upgrade from " << remote_endpoint;
error_code ec;
auto const local_endpoint(
stream_ptr->next_layer().socket().local_endpoint(ec));
if (ec)
{
JLOG(journal.debug()) << remote_endpoint << " failed: " << ec.message();
return handoff;
}
auto consumer = m_resourceManager.newInboundEndpoint(
beast::IPAddressConversion::from_asio(remote_endpoint));
if (consumer.disconnect(journal))
return handoff;
auto const slot = m_peerFinder->new_inbound_slot(
beast::IPAddressConversion::from_asio(local_endpoint),
beast::IPAddressConversion::from_asio(remote_endpoint));
if (slot == nullptr)
{
// self-connect, close
handoff.moved = false;
return handoff;
}
// Validate HTTP request
{
auto const types = beast::rfc2616::split_commas(request["Connect-As"]);
if (std::find_if(types.begin(), types.end(), [](std::string const& s) {
return boost::iequals(s, "peer");
}) == types.end())
{
handoff.moved = false;
handoff.response =
makeRedirectResponse(slot, request, remote_endpoint.address());
handoff.keep_alive = beast::rfc2616::is_keep_alive(request);
return handoff;
}
}
auto const negotiatedVersion = negotiateProtocolVersion(request["Upgrade"]);
if (!negotiatedVersion)
{
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse(
slot,
request,
remote_endpoint.address(),
"Unable to agree on a protocol version");
handoff.keep_alive = false;
return handoff;
}
auto const sharedValue = makeSharedValue(*stream_ptr, journal);
if (!sharedValue)
{
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse(
slot,
request,
remote_endpoint.address(),
"Incorrect security cookie");
handoff.keep_alive = false;
return handoff;
}
try
{
auto publicKey = verifyHandshake(
request,
*sharedValue,
setup_.networkID,
setup_.public_ip,
remote_endpoint.address(),
app_);
{
// The node gets a reserved slot if it is in our cluster
// or if it has a reservation.
bool const reserved =
static_cast<bool>(app_.cluster().member(publicKey)) ||
app_.peerReservations().contains(publicKey);
auto const result =
m_peerFinder->activate(slot, publicKey, reserved);
if (result != PeerFinder::Result::success)
{
m_peerFinder->on_closed(slot);
JLOG(journal.debug())
<< "Peer " << remote_endpoint << " redirected, slots full";
handoff.moved = false;
handoff.response = makeRedirectResponse(
slot, request, remote_endpoint.address());
handoff.keep_alive = false;
return handoff;
}
}
auto const peer = std::make_shared<PeerImp>(
app_,
id,
slot,
std::move(request),
publicKey,
*negotiatedVersion,
consumer,
std::move(stream_ptr),
*this);
{
// As we are not on the strand, run() must be called
// while holding the lock, otherwise new I/O can be
// queued after a call to stop().
std::lock_guard<decltype(mutex_)> lock(mutex_);
{
auto const result = m_peers.emplace(peer->slot(), peer);
assert(result.second);
(void)result.second;
}
list_.emplace(peer.get(), peer);
peer->run();
}
handoff.moved = true;
return handoff;
}
catch (std::exception const& e)
{
JLOG(journal.debug()) << "Peer " << remote_endpoint
<< " fails handshake (" << e.what() << ")";
m_peerFinder->on_closed(slot);
handoff.moved = false;
handoff.response = makeErrorResponse(
slot, request, remote_endpoint.address(), e.what());
handoff.keep_alive = false;
return handoff;
}
}
//------------------------------------------------------------------------------
bool
OverlayImpl::isPeerUpgrade(http_request_type const& request)
{
if (!is_upgrade(request))
return false;
auto const versions = parseProtocolVersions(request["Upgrade"]);
return !versions.empty();
}
std::string
OverlayImpl::makePrefix(std::uint32_t id)
{
std::stringstream ss;
ss << "[" << std::setfill('0') << std::setw(3) << id << "] ";
return ss.str();
}
std::shared_ptr<Writer>
OverlayImpl::makeRedirectResponse(
std::shared_ptr<PeerFinder::Slot> const& slot,
http_request_type const& request,
address_type remote_address)
{
boost::beast::http::response<json_body> msg;
msg.version(request.version());
msg.result(boost::beast::http::status::service_unavailable);
msg.insert("Server", BuildInfo::getFullVersionString());
{
std::ostringstream ostr;
ostr << remote_address;
msg.insert("Remote-Address", ostr.str());
}
msg.insert("Content-Type", "application/json");
msg.insert(boost::beast::http::field::connection, "close");
msg.body() = Json::objectValue;
{
Json::Value& ips = (msg.body()["peer-ips"] = Json::arrayValue);
for (auto const& _ : m_peerFinder->redirect(slot))
ips.append(_.address.to_string());
}
msg.prepare_payload();
return std::make_shared<SimpleWriter>(msg);
}
std::shared_ptr<Writer>
OverlayImpl::makeErrorResponse(
std::shared_ptr<PeerFinder::Slot> const& slot,
http_request_type const& request,
address_type remote_address,
std::string text)
{
boost::beast::http::response<boost::beast::http::empty_body> msg;
msg.version(request.version());
msg.result(boost::beast::http::status::bad_request);
msg.reason("Bad Request (" + text + ")");
msg.insert("Server", BuildInfo::getFullVersionString());
msg.insert("Remote-Address", remote_address.to_string());
msg.insert(boost::beast::http::field::connection, "close");
msg.prepare_payload();
return std::make_shared<SimpleWriter>(msg);
}
//------------------------------------------------------------------------------
void
OverlayImpl::connect(beast::IP::Endpoint const& remote_endpoint)
{
assert(work_);
auto usage = resourceManager().newOutboundEndpoint(remote_endpoint);
if (usage.disconnect(journal_))
{
JLOG(journal_.info()) << "Over resource limit: " << remote_endpoint;
return;
}
auto const slot = peerFinder().new_outbound_slot(remote_endpoint);
if (slot == nullptr)
{
JLOG(journal_.debug()) << "Connect: No slot for " << remote_endpoint;
return;
}
auto const p = std::make_shared<ConnectAttempt>(
app_,
io_service_,
beast::IPAddressConversion::to_asio_endpoint(remote_endpoint),
usage,
setup_.context,
next_id_++,
slot,
app_.journal("Peer"),
*this);
std::lock_guard lock(mutex_);
list_.emplace(p.get(), p);
p->run();
}
//------------------------------------------------------------------------------
// Adds a peer that is already handshaked and active
void
OverlayImpl::add_active(std::shared_ptr<PeerImp> const& peer)
{
std::lock_guard lock(mutex_);
{
auto const result = m_peers.emplace(peer->slot(), peer);
assert(result.second);
(void)result.second;
}
{
auto const result = ids_.emplace(
std::piecewise_construct,
std::make_tuple(peer->id()),
std::make_tuple(peer));
assert(result.second);
(void)result.second;
}
list_.emplace(peer.get(), peer);
JLOG(journal_.debug()) << "activated " << peer->getRemoteAddress() << " ("
<< peer->id() << ":"
<< toBase58(
TokenType::NodePublic, peer->getNodePublic())
<< ")";
// As we are not on the strand, run() must be called
// while holding the lock, otherwise new I/O can be
// queued after a call to stop().
peer->run();
}
void
OverlayImpl::remove(std::shared_ptr<PeerFinder::Slot> const& slot)
{
std::lock_guard lock(mutex_);
auto const iter = m_peers.find(slot);
assert(iter != m_peers.end());
m_peers.erase(iter);
}
void
OverlayImpl::start()
{
PeerFinder::Config config = PeerFinder::Config::makeConfig(
app_.config(),
serverHandler_.setup().overlay.port,
!app_.getValidationPublicKey().empty(),
setup_.ipLimit);
m_peerFinder->setConfig(config);
m_peerFinder->start();
// Populate our boot cache: if there are no entries in [ips] then we use
// the entries in [ips_fixed].
auto bootstrapIps =
app_.config().IPS.empty() ? app_.config().IPS_FIXED : app_.config().IPS;
// If nothing is specified, default to several well-known high-capacity
// servers to serve as bootstrap:
if (bootstrapIps.empty())
{
// Pool of servers operated by Ripple Labs Inc. - https://ripple.com
bootstrapIps.push_back("r.ripple.com 51235");
// Pool of servers operated by Alloy Networks - https://www.alloy.ee
bootstrapIps.push_back("zaphod.alloy.ee 51235");
// Pool of servers operated by ISRDC - https://isrdc.in
bootstrapIps.push_back("sahyadri.isrdc.in 51235");
}
m_resolver.resolve(
bootstrapIps,
[this](
std::string const& name,
std::vector<beast::IP::Endpoint> const& addresses) {
std::vector<std::string> ips;
ips.reserve(addresses.size());
for (auto const& addr : addresses)
{
if (addr.port() == 0)
ips.push_back(to_string(addr.at_port(DEFAULT_PEER_PORT)));
else
ips.push_back(to_string(addr));
}
std::string const base("config: ");
if (!ips.empty())
m_peerFinder->addFallbackStrings(base + name, ips);
});
// Add the ips_fixed from the rippled.cfg file
if (!app_.config().standalone() && !app_.config().IPS_FIXED.empty())
{
m_resolver.resolve(
app_.config().IPS_FIXED,
[this](
std::string const& name,
std::vector<beast::IP::Endpoint> const& addresses) {
std::vector<beast::IP::Endpoint> ips;
ips.reserve(addresses.size());
for (auto& addr : addresses)
{
if (addr.port() == 0)
ips.emplace_back(addr.address(), DEFAULT_PEER_PORT);
else
ips.emplace_back(addr);
}
if (!ips.empty())
m_peerFinder->addFixedPeer(name, ips);
});
}
auto const timer = std::make_shared<Timer>(*this);
std::lock_guard lock(mutex_);
list_.emplace(timer.get(), timer);
timer_ = timer;
timer->async_wait();
}
void
OverlayImpl::stop()
{
strand_.dispatch(std::bind(&OverlayImpl::stopChildren, this));
{
std::unique_lock<decltype(mutex_)> lock(mutex_);
cond_.wait(lock, [this] { return list_.empty(); });
}
m_peerFinder->stop();
}
//------------------------------------------------------------------------------
//
// PropertyStream
//
//------------------------------------------------------------------------------
void
OverlayImpl::onWrite(beast::PropertyStream::Map& stream)
{
beast::PropertyStream::Set set("traffic", stream);
auto const stats = m_traffic.getCounts();
for (auto const& i : stats)
{
if (i)
{
beast::PropertyStream::Map item(set);
item["category"] = i.name;
item["bytes_in"] = std::to_string(i.bytesIn.load());
item["messages_in"] = std::to_string(i.messagesIn.load());
item["bytes_out"] = std::to_string(i.bytesOut.load());
item["messages_out"] = std::to_string(i.messagesOut.load());
}
}
}
//------------------------------------------------------------------------------
/** A peer has connected successfully
This is called after the peer handshake has been completed and during
peer activation. At this point, the peer address and the public key
are known.
*/
void
OverlayImpl::activate(std::shared_ptr<PeerImp> const& peer)
{
// Now track this peer
{
std::lock_guard lock(mutex_);
auto const result(ids_.emplace(
std::piecewise_construct,
std::make_tuple(peer->id()),
std::make_tuple(peer)));
assert(result.second);
(void)result.second;
}
JLOG(journal_.debug()) << "activated " << peer->getRemoteAddress() << " ("
<< peer->id() << ":"
<< toBase58(
TokenType::NodePublic, peer->getNodePublic())
<< ")";
// We just accepted this peer so we have non-zero active peers
assert(size() != 0);
}
void
OverlayImpl::onPeerDeactivate(Peer::id_t id)
{
std::lock_guard lock(mutex_);
ids_.erase(id);
}
void
OverlayImpl::onManifests(
std::shared_ptr<protocol::TMManifests> const& m,
std::shared_ptr<PeerImp> const& from)
{
auto const n = m->list_size();
auto const& journal = from->pjournal();
protocol::TMManifests relay;
for (std::size_t i = 0; i < n; ++i)
{
auto& s = m->list().Get(i).stobject();
if (auto mo = deserializeManifest(s))
{
auto const serialized = mo->serialized;
auto const result =
app_.validatorManifests().applyManifest(std::move(*mo));
if (result == ManifestDisposition::accepted)
{
relay.add_list()->set_stobject(s);
// N.B.: this is important; the applyManifest call above moves
// the loaded Manifest out of the optional so we need to
// reload it here.
mo = deserializeManifest(serialized);
assert(mo);
app_.getOPs().pubManifest(*mo);
if (app_.validators().listed(mo->masterKey))
{
auto db = app_.getWalletDB().checkoutDb();
addValidatorManifest(*db, serialized);
}
}
}
else
{
JLOG(journal.debug())
<< "Malformed manifest #" << i + 1 << ": " << strHex(s);
continue;
}
}
if (!relay.list().empty())
for_each([m2 = std::make_shared<Message>(relay, protocol::mtMANIFESTS)](
std::shared_ptr<PeerImp>&& p) { p->send(m2); });
}
void
OverlayImpl::reportTraffic(
TrafficCount::category cat,
bool isInbound,
int number)
{
m_traffic.addCount(cat, isInbound, number);
}
Json::Value
OverlayImpl::crawlShards(bool includePublicKey, std::uint32_t relays)
{
using namespace std::chrono;
Json::Value jv(Json::objectValue);
// Add shard info from this server to json result
if (auto shardStore = app_.getShardStore())
{
if (includePublicKey)
jv[jss::public_key] =
toBase58(TokenType::NodePublic, app_.nodeIdentity().first);
auto const shardInfo{shardStore->getShardInfo()};
if (!shardInfo->finalized().empty())
jv[jss::complete_shards] = shardInfo->finalizedToString();
if (!shardInfo->incomplete().empty())
jv[jss::incomplete_shards] = shardInfo->incompleteToString();
}
if (relays == 0 || size() == 0)
return jv;
{
protocol::TMGetPeerShardInfoV2 tmGPS;
tmGPS.set_relays(relays);
// Wait if a request is in progress
std::unique_lock<std::mutex> csLock{csMutex_};
if (!csIDs_.empty())
csCV_.wait(csLock);
{
std::lock_guard lock{mutex_};
for (auto const& id : ids_)
csIDs_.emplace(id.first);
}
// Request peer shard info
foreach(send_always(std::make_shared<Message>(
tmGPS, protocol::mtGET_PEER_SHARD_INFO_V2)));
if (csCV_.wait_for(csLock, seconds(60)) == std::cv_status::timeout)
{
csIDs_.clear();
csCV_.notify_all();
}
}
// Combine shard info from peers
hash_map<PublicKey, NodeStore::ShardInfo> peerShardInfo;
for_each([&](std::shared_ptr<PeerImp>&& peer) {
auto const psi{peer->getPeerShardInfos()};
for (auto const& [publicKey, shardInfo] : psi)
{
auto const it{peerShardInfo.find(publicKey)};
if (it == peerShardInfo.end())
peerShardInfo.emplace(publicKey, shardInfo);
else if (shardInfo.msgTimestamp() > it->second.msgTimestamp())
it->second = shardInfo;
}
});
// Add shard info to json result
if (!peerShardInfo.empty())
{
auto& av = jv[jss::peers] = Json::Value(Json::arrayValue);
for (auto const& [publicKey, shardInfo] : peerShardInfo)
{
auto& pv{av.append(Json::Value(Json::objectValue))};
if (includePublicKey)
{
pv[jss::public_key] =
toBase58(TokenType::NodePublic, publicKey);
}
if (!shardInfo.finalized().empty())
pv[jss::complete_shards] = shardInfo.finalizedToString();
if (!shardInfo.incomplete().empty())
pv[jss::incomplete_shards] = shardInfo.incompleteToString();
}
}
return jv;
}
void
OverlayImpl::endOfPeerChain(std::uint32_t id)
{
// Notify threads if all peers have received a reply from all peer chains
std::lock_guard csLock{csMutex_};
csIDs_.erase(id);
if (csIDs_.empty())
csCV_.notify_all();
}
/** The number of active peers on the network
Active peers are only those peers that have completed the handshake
and are running the Ripple protocol.
*/
std::size_t
OverlayImpl::size() const
{
std::lock_guard lock(mutex_);
return ids_.size();
}
int
OverlayImpl::limit()
{
return m_peerFinder->config().maxPeers;
}
Json::Value
OverlayImpl::getOverlayInfo()
{
using namespace std::chrono;
Json::Value jv;
auto& av = jv["active"] = Json::Value(Json::arrayValue);
for_each([&](std::shared_ptr<PeerImp>&& sp) {
auto& pv = av.append(Json::Value(Json::objectValue));
pv[jss::public_key] = base64_encode(
sp->getNodePublic().data(), sp->getNodePublic().size());
pv[jss::type] = sp->slot()->inbound() ? "in" : "out";
pv[jss::uptime] = static_cast<std::uint32_t>(
duration_cast<seconds>(sp->uptime()).count());
if (sp->crawl())
{
pv[jss::ip] = sp->getRemoteAddress().address().to_string();
if (sp->slot()->inbound())
{
if (auto port = sp->slot()->listening_port())
pv[jss::port] = *port;
}
else
{
pv[jss::port] = std::to_string(sp->getRemoteAddress().port());
}
}
{
auto version{sp->getVersion()};
if (!version.empty())
// Could move here if Json::value supported moving from strings
pv[jss::version] = version;
}
std::uint32_t minSeq, maxSeq;
sp->ledgerRange(minSeq, maxSeq);
if (minSeq != 0 || maxSeq != 0)
pv[jss::complete_ledgers] =
std::to_string(minSeq) + "-" + std::to_string(maxSeq);
auto const peerShardInfos{sp->getPeerShardInfos()};
auto const it{peerShardInfos.find(sp->getNodePublic())};
if (it != peerShardInfos.end())
{
auto const& shardInfo{it->second};
if (!shardInfo.finalized().empty())
pv[jss::complete_shards] = shardInfo.finalizedToString();
if (!shardInfo.incomplete().empty())
pv[jss::incomplete_shards] = shardInfo.incompleteToString();
}
});
return jv;
}
Json::Value
OverlayImpl::getServerInfo()
{
bool const humanReadable = false;
bool const admin = false;
bool const counters = false;
Json::Value server_info =
app_.getOPs().getServerInfo(humanReadable, admin, counters);
// Filter out some information
server_info.removeMember(jss::hostid);
server_info.removeMember(jss::load_factor_fee_escalation);
server_info.removeMember(jss::load_factor_fee_queue);
server_info.removeMember(jss::validation_quorum);
if (server_info.isMember(jss::validated_ledger))
{
Json::Value& validated_ledger = server_info[jss::validated_ledger];
validated_ledger.removeMember(jss::base_fee);
validated_ledger.removeMember(jss::reserve_base_xrp);
validated_ledger.removeMember(jss::reserve_inc_xrp);
}
return server_info;
}
Json::Value
OverlayImpl::getServerCounts()
{
return getCountsJson(app_, 10);
}
Json::Value
OverlayImpl::getUnlInfo()
{
Json::Value validators = app_.validators().getJson();
if (validators.isMember(jss::publisher_lists))
{
Json::Value& publisher_lists = validators[jss::publisher_lists];
for (auto& publisher : publisher_lists)
{
publisher.removeMember(jss::list);
}
}
validators.removeMember(jss::signing_keys);
validators.removeMember(jss::trusted_validator_keys);
validators.removeMember(jss::validation_quorum);
Json::Value validatorSites = app_.validatorSites().getJson();
if (validatorSites.isMember(jss::validator_sites))
{
validators[jss::validator_sites] =
std::move(validatorSites[jss::validator_sites]);
}
return validators;
}
// Returns information on verified peers.
Json::Value
OverlayImpl::json()
{
Json::Value json;
for (auto const& peer : getActivePeers())
{
json.append(peer->json());
}
return json;
}
bool
OverlayImpl::processCrawl(http_request_type const& req, Handoff& handoff)
{
if (req.target() != "/crawl" ||
setup_.crawlOptions == CrawlOptions::Disabled)
return false;
boost::beast::http::response<json_body> msg;
msg.version(req.version());
msg.result(boost::beast::http::status::ok);
msg.insert("Server", BuildInfo::getFullVersionString());
msg.insert("Content-Type", "application/json");
msg.insert("Connection", "close");
msg.body()["version"] = Json::Value(2u);
if (setup_.crawlOptions & CrawlOptions::Overlay)
{
msg.body()["overlay"] = getOverlayInfo();
}
if (setup_.crawlOptions & CrawlOptions::ServerInfo)
{
msg.body()["server"] = getServerInfo();
}
if (setup_.crawlOptions & CrawlOptions::ServerCounts)
{
msg.body()["counts"] = getServerCounts();
}
if (setup_.crawlOptions & CrawlOptions::Unl)
{
msg.body()["unl"] = getUnlInfo();
}
msg.prepare_payload();
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
}
bool
OverlayImpl::processValidatorList(
http_request_type const& req,
Handoff& handoff)
{
// If the target is in the form "/vl/<validator_list_public_key>",
// return the most recent validator list for that key.
constexpr std::string_view prefix("/vl/");
if (!req.target().starts_with(prefix.data()) || !setup_.vlEnabled)
return false;
std::uint32_t version = 1;
boost::beast::http::response<json_body> msg;
msg.version(req.version());
msg.insert("Server", BuildInfo::getFullVersionString());
msg.insert("Content-Type", "application/json");
msg.insert("Connection", "close");
auto fail = [&msg, &handoff](auto status) {
msg.result(status);
msg.insert("Content-Length", "0");
msg.body() = Json::nullValue;
msg.prepare_payload();
handoff.response = std::make_shared<SimpleWriter>(msg);
return true;
};
auto key = req.target().substr(prefix.size());