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rldp-http-proxy.cpp
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/*
This file is part of TON Blockchain source code.
TON Blockchain is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
TON Blockchain is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with TON Blockchain. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
You must obey the GNU General Public License in all respects for all
of the code used other than OpenSSL. If you modify file(s) with this
exception, you may extend this exception to your version of the file(s),
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version. If you delete this exception statement
from all source files in the program, then also delete it here.
Copyright 2019-2020 Telegram Systems LLP
*/
#include "http/http-server.h"
#include "http/http-client.h"
#include "td/utils/port/signals.h"
#include "td/utils/OptionParser.h"
#include "td/utils/FileLog.h"
#include "td/utils/Random.h"
#include "td/utils/filesystem.h"
#include "auto/tl/ton_api_json.h"
#include "auto/tl/tonlib_api.hpp"
#include "td/actor/MultiPromise.h"
#include "common/errorcode.h"
#include "tonlib/tonlib/TonlibClient.h"
#include "adnl/adnl.h"
#include "rldp/rldp.h"
#include "rldp2/rldp.h"
#include "dht/dht.h"
#include <algorithm>
#include <list>
#include <set>
#include "git.h"
#include "td/utils/BufferedFd.h"
#include "common/delay.h"
#include "td/utils/port/path.h"
#include "tonlib/tonlib/TonlibClientWrapper.h"
#include "DNSResolver.h"
#if TD_DARWIN || TD_LINUX
#include <unistd.h>
#endif
class RldpHttpProxy;
class RldpDispatcher : public ton::adnl::AdnlSenderInterface {
public:
RldpDispatcher(td::actor::ActorId<ton::rldp::Rldp> rldp, td::actor::ActorId<ton::rldp2::Rldp> rldp2)
: rldp_(std::move(rldp)), rldp2_(std::move(rldp2)) {
}
void send_message(ton::adnl::AdnlNodeIdShort src, ton::adnl::AdnlNodeIdShort dst, td::BufferSlice data) override {
td::actor::send_closure(dispatch(dst), &ton::adnl::AdnlSenderInterface::send_message, src, dst, std::move(data));
}
void send_query(ton::adnl::AdnlNodeIdShort src, ton::adnl::AdnlNodeIdShort dst, std::string name,
td::Promise<td::BufferSlice> promise, td::Timestamp timeout, td::BufferSlice data) override {
td::actor::send_closure(dispatch(dst), &ton::adnl::AdnlSenderInterface::send_query, src, dst, std::move(name),
std::move(promise), timeout, std::move(data));
}
void send_query_ex(ton::adnl::AdnlNodeIdShort src, ton::adnl::AdnlNodeIdShort dst, std::string name,
td::Promise<td::BufferSlice> promise, td::Timestamp timeout, td::BufferSlice data,
td::uint64 max_answer_size) override {
td::actor::send_closure(dispatch(dst), &ton::adnl::AdnlSenderInterface::send_query_ex, src, dst, std::move(name),
std::move(promise), timeout, std::move(data), max_answer_size);
}
void get_conn_ip_str(ton::adnl::AdnlNodeIdShort l_id, ton::adnl::AdnlNodeIdShort p_id,
td::Promise<td::string> promise) override {
td::actor::send_closure(rldp_, &ton::adnl::AdnlSenderInterface::get_conn_ip_str, l_id, p_id, std::move(promise));
}
void set_supports_rldp2(ton::adnl::AdnlNodeIdShort dst, bool supports) {
if (supports) {
supports_rldp2_.insert(dst);
} else {
supports_rldp2_.erase(dst);
}
}
private:
td::actor::ActorId<ton::rldp::Rldp> rldp_;
td::actor::ActorId<ton::rldp2::Rldp> rldp2_;
std::set<ton::adnl::AdnlNodeIdShort> supports_rldp2_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> dispatch(ton::adnl::AdnlNodeIdShort dst) const {
if (supports_rldp2_.count(dst)) {
return rldp2_;
}
return rldp_;
}
};
class HttpRemote : public td::actor::Actor {
public:
struct Query {
std::unique_ptr<ton::http::HttpRequest> request;
std::shared_ptr<ton::http::HttpPayload> payload;
td::Timestamp timeout;
td::Promise<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>> promise;
};
HttpRemote(td::IPAddress addr) : addr_(addr) {
}
void start_up() override {
class Cb : public ton::http::HttpClient::Callback {
public:
Cb(td::actor::ActorId<HttpRemote> id) : id_(id) {
}
void on_ready() override {
td::actor::send_closure(id_, &HttpRemote::set_ready, true);
}
void on_stop_ready() override {
td::actor::send_closure(id_, &HttpRemote::set_ready, false);
}
private:
td::actor::ActorId<HttpRemote> id_;
};
client_ = ton::http::HttpClient::create_multi("", addr_, 1000, 100, std::make_shared<Cb>(actor_id(this)));
}
void set_ready(bool ready) {
ready_ = ready;
}
void receive_request(
std::unique_ptr<ton::http::HttpRequest> request, std::shared_ptr<ton::http::HttpPayload> payload,
td::Promise<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>>
promise) {
if (ready_) {
bool keep = request->keep_alive();
auto P = td::PromiseCreator::lambda(
[promise = std::move(promise), keep](
td::Result<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>>
R) mutable {
if (R.is_error()) {
promise.set_error(R.move_as_error());
} else {
auto v = R.move_as_ok();
v.first->set_keep_alive(keep);
if (v.second->payload_type() != ton::http::HttpPayload::PayloadType::pt_empty &&
!v.first->found_content_length() && !v.first->found_transfer_encoding()) {
v.first->add_header(ton::http::HttpHeader{"Transfer-Encoding", "Chunked"});
}
promise.set_value(std::move(v));
}
});
td::actor::send_closure(client_, &ton::http::HttpClient::send_request, std::move(request), std::move(payload),
td::Timestamp::never(), std::move(P));
} else {
ton::http::answer_error(ton::http::HttpStatusCode::status_bad_request, "", std::move(promise));
}
}
private:
td::IPAddress addr_;
bool ready_ = true;
td::actor::ActorOwn<ton::http::HttpClient> client_;
};
td::BufferSlice create_error_response(const std::string &proto_version, int code, const std::string &reason) {
return ton::create_serialize_tl_object<ton::ton_api::http_response>(
proto_version, code, reason, std::vector<ton::tl_object_ptr<ton::ton_api::http_header>>(), true);
}
const std::string PROXY_SITE_VERISON_HEADER_NAME = "Ton-Proxy-Site-Version";
const std::string PROXY_ENTRY_VERISON_HEADER_NAME = "Ton-Proxy-Entry-Version";
const std::string PROXY_VERSION_HEADER = PSTRING() << "Commit: " << GitMetadata::CommitSHA1()
<< ", Date: " << GitMetadata::CommitDate();
const td::uint64 CAPABILITY_RLDP2 = 1;
const td::uint64 CAPABILITIES = 1;
using RegisteredPayloadSenderGuard =
std::unique_ptr<std::pair<td::actor::ActorId<RldpHttpProxy>, td::Bits256>,
std::function<void(std::pair<td::actor::ActorId<RldpHttpProxy>, td::Bits256> *)>>;
class HttpRldpPayloadReceiver : public td::actor::Actor {
public:
HttpRldpPayloadReceiver(std::shared_ptr<ton::http::HttpPayload> payload, td::Bits256 transfer_id,
ton::adnl::AdnlNodeIdShort src, ton::adnl::AdnlNodeIdShort local_id,
td::actor::ActorId<ton::adnl::Adnl> adnl,
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp, bool is_tunnel = false)
: payload_(std::move(payload))
, id_(transfer_id)
, src_(src)
, local_id_(local_id)
, adnl_(adnl)
, rldp_(rldp)
, is_tunnel_(is_tunnel) {
}
void start_up() override {
class Cb : public ton::http::HttpPayload::Callback {
public:
Cb(td::actor::ActorId<HttpRldpPayloadReceiver> id) : self_id_(id) {
}
void run(size_t ready_bytes) override {
if (!reached_ && ready_bytes < watermark_) {
reached_ = true;
td::actor::send_closure(self_id_, &HttpRldpPayloadReceiver::request_more_data);
} else if (reached_ && ready_bytes >= watermark_) {
reached_ = false;
}
}
void completed() override {
}
private:
size_t watermark_ = watermark();
bool reached_ = false;
td::actor::ActorId<HttpRldpPayloadReceiver> self_id_;
};
payload_->add_callback(std::make_unique<Cb>(actor_id(this)));
request_more_data();
}
void request_more_data() {
LOG(INFO) << "HttpPayloadReceiver: sent=" << sent_ << " completed=" << payload_->parse_completed()
<< " ready=" << payload_->ready_bytes() << " watermark=" << watermark();
if (sent_ || payload_->parse_completed()) {
return;
}
if (payload_->ready_bytes() >= watermark()) {
return;
}
sent_ = true;
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
if (R.is_error()) {
td::actor::send_closure(SelfId, &HttpRldpPayloadReceiver::abort_query, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &HttpRldpPayloadReceiver::add_data, R.move_as_ok());
}
});
auto f = ton::create_serialize_tl_object<ton::ton_api::http_getNextPayloadPart>(
id_, seqno_++, static_cast<td::int32>(chunk_size()));
auto timeout = td::Timestamp::in(is_tunnel_ ? 60.0 : 15.0);
td::actor::send_closure(rldp_, &ton::adnl::AdnlSenderInterface::send_query_ex, local_id_, src_, "payload part",
std::move(P), timeout, std::move(f), 2 * chunk_size() + 1024);
}
void add_data(td::BufferSlice data) {
LOG(INFO) << "HttpPayloadReceiver: received answer (size " << data.size() << ")";
auto F = ton::fetch_tl_object<ton::ton_api::http_payloadPart>(data, true);
if (F.is_error()) {
abort_query(F.move_as_error());
return;
}
auto f = F.move_as_ok();
LOG(INFO) << "HttpPayloadReceiver: received answer datasize=" << f->data_.size()
<< " trailers_cnt=" << f->trailer_.size() << " last=" << f->last_;
if (f->data_.size() != 0) {
payload_->add_chunk(std::move(f->data_));
}
for (auto &x : f->trailer_) {
ton::http::HttpHeader h{x->name_, x->value_};
auto S = h.basic_check();
if (S.is_error()) {
abort_query(S.move_as_error());
return;
}
payload_->add_trailer(std::move(h));
}
sent_ = false;
if (f->last_) {
payload_->complete_parse();
LOG(INFO) << "received HTTP payload";
stop();
} else {
if (payload_->ready_bytes() < watermark()) {
request_more_data();
}
}
}
void abort_query(td::Status error) {
LOG(INFO) << "failed to receive HTTP payload: " << error;
if (payload_) {
payload_->set_error();
}
stop();
}
private:
static constexpr size_t watermark() {
return (1 << 21) - (1 << 11);
}
static constexpr size_t chunk_size() {
return (1 << 21) - (1 << 11);
}
std::shared_ptr<ton::http::HttpPayload> payload_;
td::Bits256 id_;
ton::adnl::AdnlNodeIdShort src_;
ton::adnl::AdnlNodeIdShort local_id_;
td::actor::ActorId<ton::adnl::Adnl> adnl_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp_;
bool sent_ = false;
td::int32 seqno_ = 0;
bool is_tunnel_;
};
class HttpRldpPayloadSender : public td::actor::Actor {
public:
HttpRldpPayloadSender(std::shared_ptr<ton::http::HttpPayload> payload, td::Bits256 transfer_id,
ton::adnl::AdnlNodeIdShort local_id, td::actor::ActorId<ton::adnl::Adnl> adnl,
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp,
td::actor::ActorId<RldpHttpProxy> proxy, bool is_tunnel = false)
: payload_(std::move(payload))
, id_(transfer_id)
, local_id_(local_id)
, adnl_(adnl)
, rldp_(rldp)
, proxy_(proxy)
, is_tunnel_(is_tunnel) {
}
std::string generate_prefix() const {
std::string x(static_cast<size_t>(36), '\0');
auto S = td::MutableSlice{x};
CHECK(S.size() == 36);
auto id = ton::ton_api::http_getNextPayloadPart::ID;
S.copy_from(td::Slice(reinterpret_cast<const td::uint8 *>(&id), 4));
S.remove_prefix(4);
S.copy_from(id_.as_slice());
return x;
}
void start_up() override;
void registered_sender(RegisteredPayloadSenderGuard guard) {
guard_ = std::move(guard);
}
void try_answer_query(bool from_timer = false) {
if (from_timer) {
active_timer_ = false;
}
if (!cur_query_promise_) {
return;
}
if (payload_->is_error()) {
return;
}
if (payload_->parse_completed() || payload_->ready_bytes() >= ton::http::HttpRequest::low_watermark()) {
answer_query();
} else if (!is_tunnel_ || payload_->ready_bytes() == 0) {
return;
} else if (from_timer) {
answer_query();
} else if (!active_timer_) {
active_timer_ = true;
ton::delay_action(
[SelfId = actor_id(this)]() {
td::actor::send_closure(SelfId, &HttpRldpPayloadSender::try_answer_query, true);
},
td::Timestamp::in(0.001));
}
}
void send_data(ton::tl_object_ptr<ton::ton_api::http_getNextPayloadPart> query,
td::Promise<td::BufferSlice> promise) {
CHECK(query->id_ == id_);
if (query->seqno_ != seqno_) {
LOG(INFO) << "seqno mismatch. closing http transfer";
stop();
return;
}
if (cur_query_promise_) {
LOG(INFO) << "duplicate http query. closing http transfer";
stop();
return;
}
cur_query_size_ = query->max_chunk_size_;
if (cur_query_size_ > watermark()) {
cur_query_size_ = watermark();
}
cur_query_promise_ = std::move(promise);
LOG(INFO) << "received request. size=" << cur_query_size_ << " parse_completed=" << payload_->parse_completed()
<< " ready_bytes=" << payload_->ready_bytes();
alarm_timestamp() = td::Timestamp::in(is_tunnel_ ? 50.0 : 10.0);
try_answer_query(false);
}
void receive_query(ton::tl_object_ptr<ton::ton_api::http_getNextPayloadPart> f,
td::Promise<td::BufferSlice> promise) {
send_data(std::move(f), std::move(promise));
}
void alarm() override {
if (cur_query_promise_) {
if (is_tunnel_) {
answer_query();
return;
}
LOG(INFO) << "timeout on inbound connection. closing http transfer";
} else {
LOG(INFO) << "timeout on RLDP connection. closing http transfer";
}
stop();
}
void answer_query() {
cur_query_promise_.set_value(ton::serialize_tl_object(payload_->store_tl(cur_query_size_), true));
if (payload_->written()) {
LOG(INFO) << "sent HTTP payload";
stop();
}
seqno_++;
alarm_timestamp() = td::Timestamp::in(is_tunnel_ ? 60.0 : 30.0);
}
void abort_query(td::Status error) {
LOG(INFO) << error;
stop();
}
private:
static constexpr size_t watermark() {
return (1 << 21) - (1 << 11);
}
std::shared_ptr<ton::http::HttpPayload> payload_;
td::Bits256 id_;
RegisteredPayloadSenderGuard guard_;
td::int32 seqno_ = 0;
ton::adnl::AdnlNodeIdShort local_id_;
td::actor::ActorId<ton::adnl::Adnl> adnl_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp_;
td::actor::ActorId<RldpHttpProxy> proxy_;
size_t cur_query_size_;
td::Promise<td::BufferSlice> cur_query_promise_;
bool is_tunnel_, active_timer_ = false;
};
class RldpHttpProxy;
class TcpToRldpRequestSender : public td::actor::Actor {
public:
TcpToRldpRequestSender(
ton::adnl::AdnlNodeIdShort local_id, std::string host, std::unique_ptr<ton::http::HttpRequest> request,
std::shared_ptr<ton::http::HttpPayload> request_payload,
td::Promise<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>> promise,
td::actor::ActorId<ton::adnl::Adnl> adnl, td::actor::ActorId<ton::dht::Dht> dht,
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp, td::actor::ActorId<RldpHttpProxy> proxy,
td::actor::ActorId<DNSResolver> dns_resolver, ton::adnl::AdnlNodeIdShort storage_gateway)
: local_id_(local_id)
, host_(std::move(host))
, request_(std::move(request))
, request_payload_(std::move(request_payload))
, promise_(std::move(promise))
, adnl_(adnl)
, dht_(dht)
, rldp_(rldp)
, proxy_(proxy)
, dns_resolver_(dns_resolver)
, storage_gateway_(storage_gateway) {
}
void start_up() override {
td::Random::secure_bytes(id_.as_slice());
request_tl_ = request_->store_tl(id_);
resolve(host_);
}
void resolve(std::string host);
void resolved(ton::adnl::AdnlNodeIdShort id);
void got_result(td::BufferSlice data) {
auto F = ton::fetch_tl_object<ton::ton_api::http_response>(data, true);
if (F.is_error()) {
abort_query(F.move_as_error());
return;
}
auto f = F.move_as_ok();
auto R = ton::http::HttpResponse::create(f->http_version_, f->status_code_, f->reason_, f->no_payload_, true,
is_tunnel() && f->status_code_ == 200);
if (R.is_error()) {
abort_query(R.move_as_error());
return;
}
response_ = R.move_as_ok();
for (auto &e : f->headers_) {
ton::http::HttpHeader h{e->name_, e->value_};
auto S = h.basic_check();
if (S.is_error()) {
abort_query(S.move_as_error());
return;
}
response_->add_header(std::move(h));
}
response_->add_header({PROXY_ENTRY_VERISON_HEADER_NAME, PROXY_VERSION_HEADER});
auto S = response_->complete_parse_header();
if (S.is_error()) {
abort_query(S.move_as_error());
return;
}
response_payload_ = response_->create_empty_payload().move_as_ok();
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Unit> R) {
if (R.is_error()) {
td::actor::send_closure(SelfId, &TcpToRldpRequestSender::abort_query, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &TcpToRldpRequestSender::finished_payload_transfer);
}
});
if (f->no_payload_) {
response_payload_->complete_parse();
} else {
td::actor::create_actor<HttpRldpPayloadReceiver>("HttpPayloadReceiver", response_payload_, id_, dst_, local_id_,
adnl_, rldp_, is_tunnel())
.release();
}
promise_.set_value(std::make_pair(std::move(response_), std::move(response_payload_)));
stop();
};
void finished_payload_transfer() {
stop();
}
void abort_query(td::Status error) {
LOG(INFO) << "aborting http over rldp query: " << error;
promise_.set_error(std::move(error));
stop();
}
protected:
bool is_tunnel() const {
return request_->method() == "CONNECT";
}
td::Bits256 id_;
ton::adnl::AdnlNodeIdShort local_id_;
std::string host_;
ton::adnl::AdnlNodeIdShort dst_;
std::unique_ptr<ton::http::HttpRequest> request_;
std::shared_ptr<ton::http::HttpPayload> request_payload_;
ton::tl_object_ptr<ton::ton_api::http_request> request_tl_;
td::Promise<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>> promise_;
td::actor::ActorId<ton::adnl::Adnl> adnl_;
td::actor::ActorId<ton::dht::Dht> dht_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp_;
td::actor::ActorId<RldpHttpProxy> proxy_;
td::actor::ActorId<DNSResolver> dns_resolver_;
ton::adnl::AdnlNodeIdShort storage_gateway_ = ton::adnl::AdnlNodeIdShort::zero();
bool dns_resolve_sent_ = false;
std::unique_ptr<ton::http::HttpResponse> response_;
std::shared_ptr<ton::http::HttpPayload> response_payload_;
};
class RldpTcpTunnel : public td::actor::Actor, private td::ObserverBase {
public:
RldpTcpTunnel(td::Bits256 transfer_id, ton::adnl::AdnlNodeIdShort src, ton::adnl::AdnlNodeIdShort local_id,
td::actor::ActorId<ton::adnl::Adnl> adnl, td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp,
td::actor::ActorId<RldpHttpProxy> proxy, td::SocketFd fd)
: id_(transfer_id)
, src_(src)
, local_id_(local_id)
, adnl_(std::move(adnl))
, rldp_(std::move(rldp))
, proxy_(std::move(proxy))
, fd_(std::move(fd)) {
}
void start_up() override;
void tear_down() override {
LOG(INFO) << "RldpTcpTunnel: tear_down";
td::actor::SchedulerContext::get()->get_poll().unsubscribe(fd_.get_poll_info().get_pollable_fd_ref());
}
void registered_sender(RegisteredPayloadSenderGuard guard) {
guard_ = std::move(guard);
}
void notify() override {
td::actor::send_closure(self_, &RldpTcpTunnel::process);
}
void request_data() {
if (close_ || sent_request_) {
return;
}
sent_request_ = true;
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::BufferSlice> R) {
td::actor::send_closure(SelfId, &RldpTcpTunnel::got_data_from_rldp, std::move(R));
});
auto f = ton::create_serialize_tl_object<ton::ton_api::http_getNextPayloadPart>(id_, out_seqno_++,
(1 << 21) - (1 << 11));
td::actor::send_closure(rldp_, &ton::adnl::AdnlSenderInterface::send_query_ex, local_id_, src_, "payload part",
std::move(P), td::Timestamp::in(60.0), std::move(f), (1 << 21) + 1024);
}
void receive_query(ton::tl_object_ptr<ton::ton_api::http_getNextPayloadPart> f,
td::Promise<td::BufferSlice> promise) {
if (cur_promise_) {
LOG(INFO) << "failed to process query: previous query is active";
promise.set_error(td::Status::Error("previous query is active"));
return;
}
if (f->seqno_ != cur_seqno_) {
LOG(INFO) << "failed to process query: seqno mismatch";
promise.set_error(td::Status::Error("seqno mismatch"));
return;
}
LOG(INFO) << "RldpTcpTunnel: received query, seqno=" << cur_seqno_;
cur_promise_ = std::move(promise);
cur_max_chunk_size_ = f->max_chunk_size_;
alarm_timestamp() = td::Timestamp::in(50.0);
process();
}
void got_data_from_rldp(td::Result<td::BufferSlice> R) {
if (R.is_error()) {
abort(R.move_as_error());
return;
}
td::BufferSlice data = R.move_as_ok();
LOG(INFO) << "RldpTcpTunnel: received data from rldp: size=" << data.size();
sent_request_ = false;
auto F = ton::fetch_tl_object<ton::ton_api::http_payloadPart>(data, true);
if (F.is_error()) {
abort(F.move_as_error());
return;
}
auto f = F.move_as_ok();
fd_.output_buffer().append(std::move(f->data_));
if (f->last_) {
got_last_part_ = true;
}
process();
}
void process() {
if (!close_) {
auto status = [&] {
TRY_STATUS(fd_.flush_read());
TRY_STATUS(fd_.flush_write());
close_ = td::can_close(fd_);
return td::Status::OK();
}();
if (status.is_error()) {
abort(std::move(status));
return;
}
}
if (got_last_part_) {
close_ = true;
}
answer_query();
request_data();
}
void answer_query(bool allow_empty = false, bool from_timer = false) {
if (from_timer) {
active_timer_ = false;
}
auto &input = fd_.input_buffer();
if (cur_promise_ && (!input.empty() || close_ || allow_empty)) {
if (!from_timer && !close_ && !allow_empty && input.size() < ton::http::HttpRequest::low_watermark()) {
if (!active_timer_) {
active_timer_ = true;
ton::delay_action(
[SelfId = actor_id(this)]() {
td::actor::send_closure(SelfId, &RldpTcpTunnel::answer_query, false, true);
},
td::Timestamp::in(0.001));
}
return;
}
size_t s = std::min<size_t>(input.size(), cur_max_chunk_size_);
td::BufferSlice data(s);
LOG(INFO) << "RldpTcpTunnel: sending data to rldp: size=" << data.size();
input.advance(s, td::as_mutable_slice(data));
cur_promise_.set_result(ton::create_serialize_tl_object<ton::ton_api::http_payloadPart>(
std::move(data), std::vector<ton::tl_object_ptr<ton::ton_api::http_header>>(), close_));
++cur_seqno_;
cur_promise_.reset();
alarm_timestamp() = td::Timestamp::never();
if (close_) {
stop();
return;
}
}
}
void alarm() override {
answer_query(true, false);
}
void abort(td::Status status) {
LOG(INFO) << "RldpTcpTunnel error: " << status;
if (cur_promise_) {
cur_promise_.set_error(status.move_as_error());
}
stop();
}
private:
std::string generate_prefix() const {
std::string x(static_cast<size_t>(36), '\0');
auto S = td::MutableSlice{x};
CHECK(S.size() == 36);
auto id = ton::ton_api::http_getNextPayloadPart::ID;
S.copy_from(td::Slice(reinterpret_cast<const td::uint8 *>(&id), 4));
S.remove_prefix(4);
S.copy_from(id_.as_slice());
return x;
}
td::Bits256 id_;
RegisteredPayloadSenderGuard guard_;
ton::adnl::AdnlNodeIdShort src_;
ton::adnl::AdnlNodeIdShort local_id_;
td::actor::ActorId<ton::adnl::Adnl> adnl_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp_;
td::actor::ActorId<RldpHttpProxy> proxy_;
td::BufferedFd<td::SocketFd> fd_;
td::actor::ActorId<RldpTcpTunnel> self_;
td::int32 cur_seqno_ = 0, cur_max_chunk_size_ = 0;
td::Promise<td::BufferSlice> cur_promise_;
td::int32 out_seqno_ = 0;
bool close_ = false, sent_request_ = false, got_last_part_ = false;
bool active_timer_ = false;
};
class RldpToTcpRequestSender : public td::actor::Actor {
public:
RldpToTcpRequestSender(td::Bits256 id, ton::adnl::AdnlNodeIdShort local_id, ton::adnl::AdnlNodeIdShort dst,
std::unique_ptr<ton::http::HttpRequest> request,
std::shared_ptr<ton::http::HttpPayload> request_payload, td::Promise<td::BufferSlice> promise,
td::actor::ActorId<ton::adnl::Adnl> adnl,
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp,
td::actor::ActorId<RldpHttpProxy> proxy, td::actor::ActorId<HttpRemote> remote)
: id_(id)
, local_id_(local_id)
, dst_(dst)
, request_(std::move(request))
, request_payload_(std::move(request_payload))
, proto_version_(request_->proto_version())
, promise_(std::move(promise))
, adnl_(adnl)
, rldp_(rldp)
, proxy_(proxy)
, remote_(std::move(remote)) {
}
void start_up() override {
auto P = td::PromiseCreator::lambda(
[SelfId = actor_id(this)](
td::Result<std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>>>
R) {
if (R.is_error()) {
td::actor::send_closure(SelfId, &RldpToTcpRequestSender::abort_query, R.move_as_error());
} else {
td::actor::send_closure(SelfId, &RldpToTcpRequestSender::got_result, R.move_as_ok());
}
});
td::actor::send_closure(remote_, &HttpRemote::receive_request, std::move(request_), request_payload_, std::move(P));
td::actor::create_actor<HttpRldpPayloadReceiver>("HttpPayloadReceiver(R)", std::move(request_payload_), id_, dst_,
local_id_, adnl_, rldp_)
.release();
}
void got_result(std::pair<std::unique_ptr<ton::http::HttpResponse>, std::shared_ptr<ton::http::HttpPayload>> R) {
td::actor::create_actor<HttpRldpPayloadSender>("HttpPayloadSender(R)", std::move(R.second), id_, local_id_, adnl_,
rldp_, proxy_)
.release();
R.first->add_header({PROXY_SITE_VERISON_HEADER_NAME, PROXY_VERSION_HEADER});
auto f = ton::serialize_tl_object(R.first->store_tl(), true);
promise_.set_value(std::move(f));
stop();
}
void abort_query(td::Status error) {
LOG(INFO) << "aborting http over rldp query: " << error;
promise_.set_result(create_error_response(proto_version_, 502, "Bad Gateway"));
stop();
}
protected:
td::Bits256 id_;
ton::adnl::AdnlNodeIdShort local_id_;
ton::adnl::AdnlNodeIdShort dst_;
std::unique_ptr<ton::http::HttpRequest> request_;
std::shared_ptr<ton::http::HttpPayload> request_payload_;
std::string proto_version_;
td::Promise<td::BufferSlice> promise_;
td::actor::ActorId<ton::adnl::Adnl> adnl_;
td::actor::ActorId<ton::adnl::AdnlSenderInterface> rldp_;
td::actor::ActorId<RldpHttpProxy> proxy_;
td::actor::ActorId<HttpRemote> remote_;
};
class RldpHttpProxy : public td::actor::Actor {
public:
RldpHttpProxy() = default;
void set_port(td::uint16 port) {
if (port_) {
LOG(ERROR) << "duplicate listening port";
std::_Exit(2);
}
port_ = port;
}
void set_global_config(std::string path) {
global_config_ = std::move(path);
}
void set_addr(td::IPAddress addr) {
addr_ = addr;
}
void set_client_port(td::uint16 port) {
is_client_ = true;
client_port_ = port;
}
void set_local_host(std::string host, td::uint16 port, td::IPAddress remote) {
hosts_[host].ports_[port].remote_addr_ = remote;
}
td::Status load_global_config() {
TRY_RESULT_PREFIX(conf_data, td::read_file(global_config_), "failed to read: ");
TRY_RESULT_PREFIX(conf_json, td::json_decode(conf_data.as_slice()), "failed to parse json: ");
ton::ton_api::config_global conf;
TRY_STATUS_PREFIX(ton::ton_api::from_json(conf, conf_json.get_object()), "json does not fit TL scheme: ");
if (!conf.dht_) {
return td::Status::Error(ton::ErrorCode::error, "does not contain [dht] section");
}
TRY_RESULT_PREFIX(dht, ton::dht::Dht::create_global_config(std::move(conf.dht_)), "bad [dht] section: ");
dht_config_ = std::move(dht);
return td::Status::OK();
}
void store_dht() {
for (auto &serv : hosts_) {
if (serv.first != "*") {
for (auto &serv_id : server_ids_) {
ton::PublicKey key = ton::pubkeys::Unenc{"http." + serv.first};
ton::dht::DhtKey dht_key{key.compute_short_id(), "http." + serv.first, 0};
auto dht_update_rule = ton::dht::DhtUpdateRuleAnybody::create().move_as_ok();
ton::dht::DhtKeyDescription dht_key_description{std::move(dht_key), key, std::move(dht_update_rule),
td::BufferSlice()};
dht_key_description.check().ensure();
auto ttl = static_cast<td::uint32>(td::Clocks::system() + 3600);
ton::dht::DhtValue dht_value{std::move(dht_key_description), td::BufferSlice{serv_id.as_slice()}, ttl,
td::BufferSlice("")};
td::actor::send_closure(dht_, &ton::dht::Dht::set_value, std::move(dht_value), [](td::Unit) {});
}
}
}
alarm_timestamp() = td::Timestamp::in(60.0);
}
void alarm() override {
store_dht();
}
void got_full_id(ton::adnl::AdnlNodeIdShort short_id, ton::adnl::AdnlNodeIdFull full_id) {
server_ids_full_[short_id] = full_id;
}
void run() {
if (!db_root_.empty()) {
td::mkpath(db_root_ + "/").ensure();
} else if (!is_client_) {
LOG(ERROR) << "DB root is required for server proxy";
std::_Exit(2);
}
keyring_ = ton::keyring::Keyring::create(is_client_ ? std::string("") : (db_root_ + "/keyring"));
{
auto S = load_global_config();
if (S.is_error()) {
LOG(ERROR) << S;
std::_Exit(2);
}
}
if (is_client_ && server_ids_.size() > 0) {
LOG(ERROR) << "client-only node cannot be server";
std::_Exit(2);
}
auto P = td::PromiseCreator::lambda([SelfId = actor_id(this)](td::Result<td::Unit> R) {
R.ensure();
td::actor::send_closure(SelfId, &RldpHttpProxy::run_cont);
});
td::MultiPromise mp;
auto ig = mp.init_guard();
ig.add_promise(std::move(P));
for (auto &x : server_ids_) {
auto Q = td::PromiseCreator::lambda([promise = ig.get_promise(), SelfId = actor_id(this),
x](td::Result<ton::PublicKey> R) mutable {
if (R.is_error()) {
promise.set_error(R.move_as_error());
} else {
td::actor::send_closure(SelfId, &RldpHttpProxy::got_full_id, x, ton::adnl::AdnlNodeIdFull{R.move_as_ok()});
promise.set_value(td::Unit());
}
});
td::actor::send_closure(keyring_, &ton::keyring::Keyring::get_public_key, x.pubkey_hash(), std::move(Q));
}
auto conf_dataR = td::read_file(global_config_);
conf_dataR.ensure();
ton::tl_object_ptr<tonlib_api::KeyStoreType> key_store;
if (db_root_.empty()) {
key_store = tonlib_api::make_object<tonlib_api::keyStoreTypeInMemory>();
} else {
td::mkpath(db_root_ + "/tonlib-cache/").ensure();
key_store = tonlib_api::make_object<tonlib_api::keyStoreTypeDirectory>(db_root_ + "/tonlib-cache/");
}
auto tonlib_options = tonlib_api::make_object<tonlib_api::options>(
tonlib_api::make_object<tonlib_api::config>(conf_dataR.move_as_ok().as_slice().str(), "", false, false),
std::move(key_store));
tonlib_client_ = td::actor::create_actor<tonlib::TonlibClientWrapper>("tonlibclient", std::move(tonlib_options));
dns_resolver_ = td::actor::create_actor<DNSResolver>("dnsresolver", tonlib_client_.get());
}
void run_cont() {
if (is_client_ && hosts_.size() > 0) {
LOG(ERROR) << "client-only node cannot be server";
std::_Exit(2);
}
if (is_client_ && client_port_ == 0) {
LOG(ERROR) << "client-only expects client port";
std::_Exit(2);
}
{
adnl_network_manager_ =
ton::adnl::AdnlNetworkManager::create(is_client_ ? client_port_ : static_cast<td::uint16>(addr_.get_port()));
adnl_ = ton::adnl::Adnl::create(is_client_ ? std::string("") : (db_root_), keyring_.get());
td::actor::send_closure(adnl_, &ton::adnl::Adnl::register_network_manager, adnl_network_manager_.get());
ton::adnl::AdnlCategoryMask cat_mask;
cat_mask[0] = true;
if (is_client_) {
td::IPAddress addr;
addr.init_host_port("127.0.0.1", client_port_).ensure();
td::actor::send_closure(adnl_network_manager_, &ton::adnl::AdnlNetworkManager::add_self_addr, addr,
std::move(cat_mask), 0);
} else {