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tdlight-telegram-bot-api/telegram-bot-api/WebhookActor.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "telegram-bot-api/WebhookActor.h"
#include "telegram-bot-api/ClientParameters.h"
#include "td/net/GetHostByNameActor.h"
#include "td/net/HttpHeaderCreator.h"
#include "td/net/HttpProxy.h"
#include "td/net/SslStream.h"
#include "td/net/TransparentProxy.h"
#include "td/actor/actor.h"
#include "td/actor/PromiseFuture.h"
#include "td/utils/base64.h"
#include "td/utils/buffer.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/JsonBuilder.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/port/IPAddress.h"
#include "td/utils/port/SocketFd.h"
#include "td/utils/Random.h"
#include "td/utils/ScopeGuard.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/Span.h"
#include "td/utils/Time.h"
#include <limits>
namespace telegram_bot_api {
static int VERBOSITY_NAME(webhook) = VERBOSITY_NAME(DEBUG);
std::atomic<td::uint64> WebhookActor::total_connections_count_{0};
WebhookActor::WebhookActor(td::ActorShared<Callback> callback, td::int64 tqueue_id, td::HttpUrl url,
td::string cert_path, td::int32 max_connections, bool from_db_flag,
td::string cached_ip_address, bool fix_ip_address,
std::shared_ptr<const ClientParameters> parameters)
: callback_(std::move(callback))
, tqueue_id_(tqueue_id)
, url_(std::move(url))
, cert_path_(std::move(cert_path))
, parameters_(std::move(parameters))
, fix_ip_address_(fix_ip_address)
, from_db_flag_(from_db_flag)
, max_connections_(max_connections) {
CHECK(max_connections_ > 0);
if (!cached_ip_address.empty()) {
auto r_ip_address = td::IPAddress::get_ip_address(cached_ip_address);
if (r_ip_address.is_ok()) {
ip_address_ = r_ip_address.move_as_ok();
ip_address_.set_port(url_.port_);
}
}
auto r_ascii_host = td::idn_to_ascii(url_.host_);
if (r_ascii_host.is_ok()) {
url_.host_ = r_ascii_host.move_as_ok();
}
LOG(INFO) << "Set webhook for " << tqueue_id << " with certificate = \"" << cert_path_
<< "\", protocol = " << (url_.protocol_ == td::HttpUrl::Protocol::Http ? "http" : "https")
<< ", host = " << url_.host_ << ", port = " << url_.port_ << ", query = " << url_.query_
<< ", max_connections = " << max_connections_;
}
void WebhookActor::relax_wakeup_at(double wakeup_at, const char *source) {
if (wakeup_at_ == 0 || wakeup_at < wakeup_at_) {
VLOG(webhook) << "Wake up in " << wakeup_at - td::Time::now() << " from " << source;
wakeup_at_ = wakeup_at;
}
}
void WebhookActor::resolve_ip_address() {
if (fix_ip_address_) {
return;
}
if (td::Time::now() < next_ip_address_resolve_time_) {
relax_wakeup_at(next_ip_address_resolve_time_, "resolve_ip_address");
return;
}
bool future_created = false;
if (future_ip_address_.empty()) {
td::PromiseActor<td::IPAddress> promise;
init_promise_future(&promise, &future_ip_address_);
future_created = true;
send_closure(parameters_->get_host_by_name_actor_id_, &td::GetHostByNameActor::run, url_.host_, url_.port_, false,
td::PromiseCreator::from_promise_actor(std::move(promise)));
}
if (future_ip_address_.is_ready()) {
next_ip_address_resolve_time_ =
td::Time::now() + IP_ADDRESS_CACHE_TIME + td::Random::fast(0, IP_ADDRESS_CACHE_TIME / 10);
relax_wakeup_at(next_ip_address_resolve_time_, "resolve_ip_address");
auto r_ip_address = future_ip_address_.move_as_result();
if (r_ip_address.is_error()) {
CHECK(!(r_ip_address.error() == td::Status::Error<td::FutureActor<td::IPAddress>::HANGUP_ERROR_CODE>()));
return on_error(r_ip_address.move_as_error());
}
auto new_ip_address = r_ip_address.move_as_ok();
if (!check_ip_address(new_ip_address)) {
return on_error(td::Status::Error(PSLICE() << "IP address " << new_ip_address.get_ip_str() << " is reserved"));
}
if (!(ip_address_ == new_ip_address)) {
VLOG(webhook) << "IP address has changed: " << ip_address_ << " --> " << new_ip_address;
ip_address_ = new_ip_address;
ip_generation_++;
if (was_checked_) {
on_webhook_verified();
}
}
VLOG(webhook) << "IP address was verified";
} else {
if (future_created) {
future_ip_address_.set_event(td::EventCreator::yield(actor_id()));
}
}
}
td::Status WebhookActor::create_connection() {
if (!ip_address_.is_valid()) {
VLOG(webhook) << "Can't create connection: IP address is not ready";
return td::Status::Error("IP address is not ready");
}
if (parameters_->webhook_proxy_ip_address_.is_valid()) {
auto r_proxy_socket_fd = td::SocketFd::open(parameters_->webhook_proxy_ip_address_);
if (r_proxy_socket_fd.is_error()) {
td::Slice error_message = "Can't connect to the webhook proxy";
auto error = td::Status::Error(PSLICE() << error_message << ": " << r_proxy_socket_fd.error());
VLOG(webhook) << error;
on_webhook_error(error_message);
on_error(td::Status::Error(error_message));
return error;
}
if (!was_checked_) {
TRY_STATUS(create_ssl_stream()); // check certificate
// verify webhook even we can't establish connection to the webhook
was_checked_ = true;
on_webhook_verified();
}
VLOG(webhook) << "Create connection through proxy " << parameters_->webhook_proxy_ip_address_;
class Callback : public td::TransparentProxy::Callback {
public:
Callback(td::ActorId<WebhookActor> actor, td::int64 id) : actor_(actor), id_(id) {
}
void set_result(td::Result<td::SocketFd> result) override {
send_closure(std::move(actor_), &WebhookActor::on_socket_ready_async, std::move(result), id_);
CHECK(actor_.empty());
}
Callback(const Callback &) = delete;
Callback &operator=(const Callback &) = delete;
Callback(Callback &&) = delete;
Callback &operator=(Callback &&) = delete;
~Callback() {
if (!actor_.empty()) {
send_closure(std::move(actor_), &WebhookActor::on_socket_ready_async, td::Status::Error("Canceled"), id_);
}
}
void on_connected() override {
// nothing to do
}
private:
td::ActorId<WebhookActor> actor_;
td::int64 id_;
};
auto id = pending_sockets_.create(td::ActorOwn<>());
VLOG(webhook) << "Creating socket " << id;
*pending_sockets_.get(id) = td::create_actor<td::HttpProxy>(
"HttpProxy", r_proxy_socket_fd.move_as_ok(), ip_address_, td::string(), td::string(),
td::make_unique<Callback>(actor_id(this), id), td::ActorShared<>());
return td::Status::Error("Proxy connection is not ready");
}
auto r_fd = td::SocketFd::open(ip_address_);
if (r_fd.is_error()) {
td::Slice error_message = "Can't connect to the webhook";
auto error = td::Status::Error(PSLICE() << error_message << ": " << r_fd.error());
VLOG(webhook) << error;
on_webhook_error(error_message);
on_error(r_fd.move_as_error());
return error;
}
return create_connection(r_fd.move_as_ok());
}
td::Result<td::SslStream> WebhookActor::create_ssl_stream() {
if (url_.protocol_ == td::HttpUrl::Protocol::Http) {
return td::SslStream();
}
auto r_ssl_stream = td::SslStream::create(url_.host_, cert_path_, td::SslStream::VerifyPeer::On, !cert_path_.empty());
if (r_ssl_stream.is_error()) {
td::Slice error_message = "Can't create an SSL connection";
auto error = td::Status::Error(PSLICE() << error_message << ": " << r_ssl_stream.error());
VLOG(webhook) << error;
on_webhook_error(PSLICE() << error_message << ": " << r_ssl_stream.error().public_message());
on_error(r_ssl_stream.move_as_error());
return std::move(error);
}
return r_ssl_stream.move_as_ok();
}
td::Status WebhookActor::create_connection(td::SocketFd fd) {
TRY_RESULT(ssl_stream, create_ssl_stream());
auto id = connections_.create(Connection());
auto *conn = connections_.get(id);
conn->actor_id_ = td::create_actor<td::HttpOutboundConnection>(
PSLICE() << "Connect:" << id, std::move(fd), std::move(ssl_stream), std::numeric_limits<size_t>::max(), 20, 60,
td::ActorShared<td::HttpOutboundConnection::Callback>(actor_id(this), id));
conn->ip_generation_ = ip_generation_;
conn->event_id_ = {};
conn->id_ = id;
ready_connections_.put(conn->to_list_node());
total_connections_count_.fetch_add(1, std::memory_order_relaxed);
if (!was_checked_) {
was_checked_ = true;
on_webhook_verified();
}
VLOG(webhook) << "Create connection " << id;
return td::Status::OK();
}
void WebhookActor::on_socket_ready_async(td::Result<td::SocketFd> r_fd, td::int64 id) {
pending_sockets_.erase(id);
if (r_fd.is_ok()) {
VLOG(webhook) << "Socket " << id << " is ready";
ready_sockets_.push_back(r_fd.move_as_ok());
} else {
VLOG(webhook) << "Failed to open socket " << id;
on_webhook_error(r_fd.error().message());
on_error(r_fd.move_as_error());
}
loop();
}
void WebhookActor::create_new_connections() {
size_t need_connections = queue_updates_.size();
if (need_connections > static_cast<size_t>(max_connections_)) {
need_connections = max_connections_;
}
if (!was_checked_) {
need_connections = 1;
}
auto now = td::Time::now();
td::FloodControlFast *flood;
bool active;
if (last_success_time_ + 10 < now) {
flood = &pending_new_connection_flood_;
if (need_connections > 1) {
need_connections = 1;
}
active = false;
} else {
flood = &active_new_connection_flood_;
if (need_connections == 0) {
need_connections = 1;
}
active = true;
}
VLOG_IF(webhook, connections_.size() < need_connections)
<< "Create new connections " << td::tag("have", connections_.size()) << td::tag("need", need_connections)
<< td::tag("pending sockets", pending_sockets_.size()) << td::tag("ready sockets", ready_sockets_.size())
<< td::tag("active", active);
while (connections_.size() + pending_sockets_.size() + ready_sockets_.size() < need_connections) {
auto wakeup_at = flood->get_wakeup_at();
if (now < wakeup_at) {
relax_wakeup_at(wakeup_at, "create_new_connections");
VLOG(webhook) << "Create new connection: flood control "
<< td::tag("after", td::format::as_time(wakeup_at - now));
break;
}
flood->add_event(static_cast<td::int32>(now));
if (create_connection().is_error()) {
relax_wakeup_at(now + 1.0, "create_new_connections error");
return;
}
}
SCOPE_EXIT {
ready_sockets_.clear();
};
while (!ready_sockets_.empty() && connections_.size() + pending_sockets_.size() < need_connections) {
auto socket_fd = std::move(ready_sockets_.back());
ready_sockets_.pop_back();
if (create_connection(std::move(socket_fd)).is_error()) {
relax_wakeup_at(now + 1.0, "create_new_connections error 2");
return;
}
}
}
void WebhookActor::loop() {
VLOG(webhook) << "Enter loop";
wakeup_at_ = 0;
if (!stop_flag_) {
load_updates();
}
if (!stop_flag_) {
resolve_ip_address();
}
if (!stop_flag_) {
create_new_connections();
}
if (!stop_flag_) {
send_updates();
}
if (!stop_flag_) {
if (wakeup_at_ != 0) {
set_timeout_at(wakeup_at_);
}
}
if (stop_flag_) {
VLOG(webhook) << "Stop";
stop();
}
}
void WebhookActor::update() {
VLOG(webhook) << "New updates in tqueue";
tqueue_empty_ = false;
loop();
}
void WebhookActor::load_updates() {
if (tqueue_empty_) {
VLOG(webhook) << "Load updates: tqueue is empty";
return;
}
if (queue_updates_.size() >= max_loaded_updates_) {
CHECK(queue_updates_.size() == max_loaded_updates_);
VLOG(webhook) << "Load updates: maximum allowed number of updates is already loaded";
return;
}
auto &tqueue = parameters_->shared_data_->tqueue_;
if (tqueue_offset_.empty()) {
tqueue_offset_ = tqueue->get_head(tqueue_id_);
}
VLOG(webhook) << "Trying to load new updates from offset " << tqueue_offset_;
auto offset = tqueue_offset_;
auto limit = td::min(SharedData::TQUEUE_EVENT_BUFFER_SIZE, max_loaded_updates_ - queue_updates_.size());
auto updates = mutable_span(parameters_->shared_data_->event_buffer_, limit);
auto now = td::Time::now();
auto unix_time_now = parameters_->shared_data_->get_unix_time(now);
size_t total_size = 0;
if (offset.empty()) {
updates.truncate(0);
} else {
auto r_size = tqueue->get(tqueue_id_, offset, false, unix_time_now, updates);
if (r_size.is_error()) {
VLOG(webhook) << "Failed to get new updates: " << r_size.error();
offset = tqueue_offset_ = tqueue->get_head(tqueue_id_);
r_size = tqueue->get(tqueue_id_, offset, false, unix_time_now, updates);
r_size.ensure();
}
total_size = r_size.ok();
}
if (updates.empty()) {
tqueue_empty_ = true;
}
for (auto &update : updates) {
VLOG(webhook) << "Load update " << update.id;
if (update_map_.find(update.id) != update_map_.end()) {
LOG(ERROR) << "Receive duplicated event " << update.id << " from tqueue";
continue;
}
auto &dest = update_map_[update.id];
dest.id_ = update.id;
dest.json_ = update.data.str();
dest.delay_ = 1;
dest.wakeup_at_ = now;
CHECK(update.expires_at >= unix_time_now);
dest.expires_at_ = update.expires_at;
dest.queue_id_ = update.extra;
tqueue_offset_ = update.id.next().move_as_ok();
if (dest.queue_id_ == 0) {
dest.queue_id_ = unique_queue_id_++;
}
auto &queue_updates = queue_updates_[dest.queue_id_];
if (queue_updates.event_ids.empty()) {
queues_.emplace(dest.wakeup_at_, dest.queue_id_);
}
queue_updates.event_ids.push(dest.id_);
}
bool need_warning = false;
if (total_size <= MIN_PENDING_UPDATES_WARNING / 2) {
if (last_pending_update_count_ > MIN_PENDING_UPDATES_WARNING) {
need_warning = true;
last_pending_update_count_ = MIN_PENDING_UPDATES_WARNING;
}
} else if (total_size >= last_pending_update_count_) {
need_warning = true;
while (total_size >= last_pending_update_count_) {
last_pending_update_count_ *= 2;
}
}
if (need_warning) {
LOG(WARNING) << "Loaded " << updates.size() << " updates out of " << total_size << ". Have " << update_map_.size()
<< " updates loaded in " << queue_updates_.size() << " queues after last error \""
<< last_error_message_ << "\" " << (last_error_time_ == 0 ? -1 : td::Time::now() - last_error_time_)
<< " seconds ago";
}
if (updates.size() == total_size && last_update_was_successful_) {
send_closure(callback_, &Callback::webhook_success);
}
if (!updates.empty()) {
VLOG(webhook) << "Loaded " << updates.size() << " new updates from offset " << offset << " out of requested "
<< limit << ". Have total of " << update_map_.size() << " updates loaded in " << queue_updates_.size()
<< " queues";
}
}
void WebhookActor::drop_event(td::TQueue::EventId event_id) {
auto it = update_map_.find(event_id);
CHECK(it != update_map_.end());
auto queue_id = it->second.queue_id_;
update_map_.erase(it);
auto queue_updates_it = queue_updates_.find(queue_id);
CHECK(!queue_updates_it->second.event_ids.empty());
CHECK(event_id == queue_updates_it->second.event_ids.front());
queue_updates_it->second.event_ids.pop();
if (queue_updates_it->second.event_ids.empty()) {
queue_updates_.erase(queue_updates_it);
} else {
auto &update = update_map_[queue_updates_it->second.event_ids.front()];
queues_.emplace(update.wakeup_at_, update.queue_id_);
}
parameters_->shared_data_->tqueue_->forget(tqueue_id_, event_id);
}
void WebhookActor::on_update_ok(td::TQueue::EventId event_id) {
last_update_was_successful_ = true;
last_success_time_ = td::Time::now();
auto it = update_map_.find(event_id);
CHECK(it != update_map_.end());
VLOG(webhook) << "Receive ok for update " << event_id << " in " << (last_success_time_ - it->second.last_send_time_)
<< " seconds";
drop_event(event_id);
}
void WebhookActor::on_update_error(td::TQueue::EventId event_id, td::Slice error, int retry_after) {
last_update_was_successful_ = false;
double now = td::Time::now();
auto it = update_map_.find(event_id);
CHECK(it != update_map_.end());
const int MAX_RETRY_AFTER = 3600;
retry_after = td::clamp(retry_after, 0, MAX_RETRY_AFTER);
int next_delay = it->second.delay_;
int next_effective_delay = retry_after;
if (retry_after == 0 && it->second.fail_count_ > 0) {
next_delay = td::min(WEBHOOK_MAX_RESEND_TIMEOUT, next_delay * 2);
next_effective_delay = next_delay;
}
if (parameters_->shared_data_->get_unix_time(now) + next_effective_delay > it->second.expires_at_) {
LOG(WARNING) << "Drop update " << event_id << ": " << error;
drop_event(event_id);
return;
}
auto &update = it->second;
update.delay_ = next_delay;
update.wakeup_at_ = now + next_effective_delay;
update.fail_count_++;
queues_.emplace(update.wakeup_at_, update.queue_id_);
VLOG(webhook) << "Delay update " << event_id << " for " << (update.wakeup_at_ - now) << " seconds because of "
<< error << " after " << update.fail_count_ << " fails received in " << (now - update.last_send_time_)
<< " seconds";
}
td::Status WebhookActor::send_update() {
if (ready_connections_.empty()) {
return td::Status::Error("No connection");
}
if (queues_.empty()) {
return td::Status::Error("No pending updates");
}
auto it = queues_.begin();
auto now = td::Time::now();
if (it->wakeup_at > now) {
relax_wakeup_at(it->wakeup_at, "send_update");
return td::Status::Error("No ready updates");
}
auto queue_id = it->id;
queues_.erase(it);
auto event_id = queue_updates_[queue_id].event_ids.front();
auto &update = update_map_[event_id];
update.last_send_time_ = now;
auto body = td::json_encode<td::BufferSlice>(JsonUpdate(update.id_.value(), update.json_));
td::HttpHeaderCreator hc;
hc.init_post(url_.query_);
hc.add_header("Host", url_.host_);
if (!url_.userinfo_.empty()) {
hc.add_header("Authorization", PSLICE() << "Basic " << td::base64_encode(url_.userinfo_));
}
hc.set_content_type("application/json");
hc.set_content_size(body.size());
hc.set_keep_alive();
hc.add_header("Accept-Encoding", "gzip, deflate");
auto r_header = hc.finish();
if (r_header.is_error()) {
return td::Status::Error(400, "URL is too long");
}
auto &connection = *Connection::from_list_node(ready_connections_.get());
connection.event_id_ = update.id_;
VLOG(webhook) << "Send update " << update.id_ << " from queue " << queue_id << " into connection " << connection.id_
<< ": " << update.json_;
VLOG(webhook) << "Request headers: " << r_header.ok();
send_closure(connection.actor_id_, &td::HttpOutboundConnection::write_next_noflush, td::BufferSlice(r_header.ok()));
send_closure(connection.actor_id_, &td::HttpOutboundConnection::write_next_noflush, std::move(body));
send_closure(connection.actor_id_, &td::HttpOutboundConnection::write_ok);
return td::Status::OK();
}
void WebhookActor::send_updates() {
VLOG(webhook) << "Have " << (queues_.size() + update_map_.size() - queue_updates_.size()) << " pending updates in "
<< queues_.size() << " queues to send";
while (send_update().is_ok()) {
}
}
void WebhookActor::handle(td::unique_ptr<td::HttpQuery> response) {
auto connection_id = get_link_token();
if (response) {
VLOG(webhook) << "Got response from connection " << connection_id;
} else {
VLOG(webhook) << "Got hangup from connection " << connection_id;
}
auto *connection_ptr = connections_.get(connection_id);
if (connection_ptr == nullptr) {
return;
}
bool close_connection = false;
td::string query_error;
td::int32 retry_after = 0;
bool need_close = false;
if (response) {
if (response->type_ != td::HttpQuery::Type::Response || !response->keep_alive_ ||
ip_generation_ != connection_ptr->ip_generation_) {
close_connection = true;
}
if (response->type_ == td::HttpQuery::Type::Response) {
if (200 <= response->code_ && response->code_ <= 299) {
auto method = response->get_arg("method");
td::to_lower_inplace(method);
if (!method.empty() && method != "deletewebhook" && method != "setwebhook" && method != "close" &&
method != "logout" && !td::begins_with(method, "get")) {
VLOG(webhook) << "Receive request " << method << " in response to webhook";
auto query = std::make_unique<Query>(std::move(response->container_), td::MutableSlice(), false, false,
td::MutableSlice(), std::move(response->args_),
std::move(response->headers_), std::move(response->files_),
parameters_->shared_data_, response->peer_address_, false);
auto promised_query =
PromisedQueryPtr(query.release(), PromiseDeleter(td::PromiseActor<td::unique_ptr<Query>>()));
send_closure(callback_, &Callback::send, std::move(promised_query));
}
first_error_410_time_ = 0;
} else {
query_error = PSTRING() << "Wrong response from the webhook: " << response->code_ << " " << response->reason_;
if (response->code_ == 410) {
if (first_error_410_time_ == 0) {
first_error_410_time_ = td::Time::now();
} else {
if (td::Time::now() > first_error_410_time_ + WEBHOOK_DROP_TIMEOUT) {
LOG(WARNING) << "Close webhook because of HTTP 410 errors";
need_close = true;
}
}
} else {
first_error_410_time_ = 0;
}
retry_after = response->get_retry_after();
// LOG(WARNING) << query_error;
on_webhook_error(query_error);
}
} else {
query_error = PSTRING() << "Wrong response from the webhook: " << *response;
on_webhook_error(query_error);
}
VLOG(webhook) << *response;
} else {
query_error = "Webhook connection closed";
connection_ptr->actor_id_.release();
close_connection = true;
}
auto event_id = connection_ptr->event_id_;
if (!event_id.empty()) {
if (query_error.empty()) {
on_update_ok(event_id);
} else {
on_update_error(event_id, query_error, retry_after);
}
} else {
CHECK(!query_error.empty());
}
connection_ptr->event_id_ = {};
if (need_close || close_connection) {
VLOG(webhook) << "Close connection " << connection_id;
connections_.erase(connection_ptr->id_);
total_connections_count_.fetch_sub(1, std::memory_order_relaxed);
} else {
ready_connections_.put(connection_ptr->to_list_node());
}
if (need_close) {
send_closure_later(actor_id(this), &WebhookActor::close);
} else {
loop();
}
}
void WebhookActor::start_up() {
max_loaded_updates_ = max_connections_ * 2;
next_ip_address_resolve_time_ = last_success_time_ = td::Time::now() - 3600;
active_new_connection_flood_.add_limit(1, 10 * max_connections_);
active_new_connection_flood_.add_limit(5, 20 * max_connections_);
pending_new_connection_flood_.add_limit(1, 1);
if (!parameters_->local_mode_) {
if (url_.protocol_ == td::HttpUrl::Protocol::Https || (parameters_->allow_http_ && url_.protocol_ == td::HttpUrl::Protocol::Http)) {
if (url_.port_ != 443 && url_.port_ != 88 && url_.port_ != 80 && url_.port_ != 8443) {
VLOG(webhook) << "Can't create webhook: port " << url_.port_ << " is forbidden";
on_error(td::Status::Error("Webhook can be set up only on ports 80, 88, 443 or 8443"));
}
} else {
CHECK(url_.protocol_ == td::HttpUrl::Protocol::Http);
VLOG(webhook) << "Can't create connection: HTTP is forbidden";
on_error(td::Status::Error("HTTPS url must be provided for webhook"));
}
}
if (fix_ip_address_ && !stop_flag_) {
if (!ip_address_.is_valid()) {
on_error(td::Status::Error("Invalid IP address specified"));
} else if (!check_ip_address(ip_address_)) {
on_error(td::Status::Error(PSLICE() << "IP address " << ip_address_.get_ip_str() << " is reserved"));
}
}
if (from_db_flag_ && !stop_flag_) {
was_checked_ = true;
on_webhook_verified();
}
yield();
}
void WebhookActor::hangup_shared() {
handle(nullptr);
loop();
}
void WebhookActor::hangup() {
VLOG(webhook) << "Stop";
callback_.release();
stop();
}
void WebhookActor::close() {
VLOG(webhook) << "Close";
send_closure(std::move(callback_), &Callback::webhook_closed, td::Status::OK());
stop();
}
void WebhookActor::tear_down() {
total_connections_count_.fetch_sub(connections_.size(), std::memory_order_relaxed);
}
void WebhookActor::on_webhook_verified() {
td::string ip_address_str;
if (ip_address_.is_valid()) {
ip_address_str = ip_address_.get_ip_str().str();
}
send_closure(callback_, &Callback::webhook_verified, std::move(ip_address_str));
}
bool WebhookActor::check_ip_address(const td::IPAddress &addr) const {
if (!addr.is_valid()) {
return false;
}
if (parameters_->local_mode_) {
// allow any valid IP address
return true;
}
if (!addr.is_ipv4()) {
VLOG(webhook) << "Bad IP address (not IPv4): " << addr;
return false;
}
return !addr.is_reserved();
}
void WebhookActor::on_error(td::Status status) {
VLOG(webhook) << "Receive webhook error " << status;
if (!was_checked_) {
CHECK(!callback_.empty());
send_closure(std::move(callback_), &Callback::webhook_closed, std::move(status));
stop_flag_ = true;
}
}
void WebhookActor::on_connection_error(td::Status error) {
CHECK(error.is_error());
on_webhook_error(error.message());
}
void WebhookActor::on_webhook_error(td::Slice error) {
if (was_checked_) {
send_closure(callback_, &Callback::webhook_error, td::Status::Error(error));
last_error_time_ = td::Time::now();
last_error_message_ = error.str();
}
}
} // namespace telegram_bot_api
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