tdlight/td/telegram/Global.cpp

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
//
// 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 "td/telegram/Global.h"
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#include "td/telegram/AuthManager.h"
#include "td/telegram/net/ConnectionCreator.h"
#include "td/telegram/net/NetQueryDispatcher.h"
#include "td/telegram/net/TempAuthKeyWatchdog.h"
#include "td/telegram/OptionManager.h"
#include "td/telegram/StateManager.h"
#include "td/telegram/TdDb.h"
#include "td/utils/format.h"
#include "td/utils/logging.h"
#include "td/utils/misc.h"
#include "td/utils/port/Clocks.h"
#include "td/utils/tl_helpers.h"
#include <cmath>
namespace td {
Global::Global() = default;
Global::~Global() = default;
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void Global::log_out(Slice reason) {
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send_closure(auth_manager_, &AuthManager::on_authorization_lost, reason.str());
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}
void Global::close_all(Promise<> on_finished) {
td_db_->close_all(std::move(on_finished));
state_manager_.clear();
}
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void Global::close_and_destroy_all(Promise<> on_finished) {
td_db_->close_and_destroy_all(std::move(on_finished));
state_manager_.clear();
}
ActorId<ConnectionCreator> Global::connection_creator() const {
return connection_creator_.get();
}
void Global::set_connection_creator(ActorOwn<ConnectionCreator> connection_creator) {
connection_creator_ = std::move(connection_creator);
}
ActorId<TempAuthKeyWatchdog> Global::temp_auth_key_watchdog() const {
return temp_auth_key_watchdog_.get();
}
void Global::set_temp_auth_key_watchdog(ActorOwn<TempAuthKeyWatchdog> actor) {
temp_auth_key_watchdog_ = std::move(actor);
}
MtprotoHeader &Global::mtproto_header() {
return *mtproto_header_;
}
void Global::set_mtproto_header(unique_ptr<MtprotoHeader> mtproto_header) {
mtproto_header_ = std::move(mtproto_header);
}
struct ServerTimeDiff {
double diff;
double system_time;
template <class StorerT>
void store(StorerT &storer) const {
using td::store;
store(diff, storer);
store(system_time, storer);
}
template <class ParserT>
void parse(ParserT &parser) {
using td::parse;
parse(diff, parser);
if (parser.get_left_len() != 0) {
parse(system_time, parser);
} else {
system_time = 0;
}
}
};
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Status Global::init(ActorId<Td> td, unique_ptr<TdDb> td_db_ptr) {
auto current_scheduler_id = Scheduler::instance()->sched_id();
auto max_scheduler_id = Scheduler::instance()->sched_count() - 1;
database_scheduler_id_ = min(current_scheduler_id + 1, max_scheduler_id);
gc_scheduler_id_ = min(current_scheduler_id + 2, max_scheduler_id);
slow_net_scheduler_id_ = min(current_scheduler_id + 3, max_scheduler_id);
td_ = td;
td_db_ = std::move(td_db_ptr);
string saved_diff_str = td_db()->get_binlog_pmc()->get("server_time_difference");
auto system_time = Clocks::system();
auto default_time_difference = system_time - Time::now();
if (saved_diff_str.empty()) {
server_time_difference_ = default_time_difference;
} else {
ServerTimeDiff saved_diff;
unserialize(saved_diff, saved_diff_str).ensure();
saved_diff_ = saved_diff.diff;
saved_system_time_ = saved_diff.system_time;
double diff = saved_diff.diff + default_time_difference;
if (saved_diff.system_time > system_time) {
double time_backwards_fix = saved_diff.system_time - system_time;
if (time_backwards_fix > 60) {
LOG(WARNING) << "Fix system time which went backwards: " << format::as_time(time_backwards_fix) << " "
<< tag("saved_system_time", saved_diff.system_time) << tag("system_time", system_time);
}
diff += time_backwards_fix;
} else if (saved_diff.system_time != 0) {
const double MAX_TIME_FORWARD = 367 * 86400; // if more than 1 year has passed, the session is logged out anyway
if (saved_diff.system_time + MAX_TIME_FORWARD < system_time) {
double time_forward_fix = system_time - (saved_diff.system_time + MAX_TIME_FORWARD);
LOG(WARNING) << "Fix system time which went forward: " << format::as_time(time_forward_fix) << " "
<< tag("saved_system_time", saved_diff.system_time) << tag("system_time", system_time);
diff -= time_forward_fix;
}
} else if (saved_diff.diff >= 1500000000 && system_time >= 1500000000) { // only for saved_diff.system_time == 0
diff = default_time_difference;
}
LOG(DEBUG) << "LOAD: " << tag("server_time_difference", diff);
server_time_difference_ = diff;
}
server_time_difference_was_updated_ = false;
dns_time_difference_ = default_time_difference;
dns_time_difference_was_updated_ = false;
return Status::OK();
}
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Slice Global::get_dir() const {
return td_db_->get_database_directory();
}
Slice Global::get_files_dir() const {
return td_db_->get_files_directory();
}
bool Global::is_test_dc() const {
return td_db_->is_test_dc();
}
bool Global::use_file_database() const {
return td_db_->use_file_database();
}
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bool Global::use_sqlite_pmc() const {
return td_db_->use_sqlite_pmc();
}
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bool Global::use_chat_info_database() const {
return td_db_->use_chat_info_database();
}
bool Global::use_message_database() const {
return td_db_->use_message_database();
}
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int32 Global::get_retry_after(int32 error_code, Slice error_message) {
if (error_code != 429) {
return 0;
}
Slice retry_after_prefix("Too Many Requests: retry after ");
if (!begins_with(error_message, retry_after_prefix)) {
return 0;
}
auto r_retry_after = to_integer_safe<int32>(error_message.substr(retry_after_prefix.size()));
if (r_retry_after.is_ok() && r_retry_after.ok() > 0) {
return r_retry_after.ok();
}
return 0;
}
int32 Global::to_unix_time(double server_time) const {
LOG_CHECK(1.0 <= server_time && server_time <= 2140000000.0)
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<< server_time << ' ' << Clocks::system() << ' ' << is_server_time_reliable() << ' '
<< get_server_time_difference() << ' ' << Time::now() << ' ' << saved_diff_ << ' ' << saved_system_time_;
return static_cast<int32>(server_time);
}
void Global::update_server_time_difference(double diff, bool force) {
if (force || !server_time_difference_was_updated_ || server_time_difference_ < diff) {
server_time_difference_ = diff;
server_time_difference_was_updated_ = true;
do_save_server_time_difference();
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get_option_manager()->on_update_server_time_difference();
}
}
void Global::save_server_time() {
auto t = Time::now();
if (server_time_difference_was_updated_ && system_time_saved_at_.load(std::memory_order_relaxed) + 10 < t) {
system_time_saved_at_ = t;
do_save_server_time_difference();
}
}
void Global::do_save_server_time_difference() {
if (get_option_boolean("disable_time_adjustment_protection")) {
td_db()->get_binlog_pmc()->erase("server_time_difference");
return;
}
// diff = server_time - Time::now
// fixed_diff = server_time - Clocks::system
double system_time = Clocks::system();
double fixed_diff = server_time_difference_ + Time::now() - system_time;
ServerTimeDiff diff;
diff.diff = fixed_diff;
diff.system_time = system_time;
td_db()->get_binlog_pmc()->set("server_time_difference", serialize(diff));
}
void Global::update_dns_time_difference(double diff) {
dns_time_difference_ = diff;
dns_time_difference_was_updated_ = true;
}
double Global::get_dns_time_difference() const {
bool dns_flag = dns_time_difference_was_updated_;
double dns_diff = dns_time_difference_;
bool server_flag = server_time_difference_was_updated_;
double server_diff = server_time_difference_;
if (dns_flag != server_flag) {
return dns_flag ? dns_diff : server_diff;
}
if (dns_flag) {
return max(dns_diff, server_diff);
}
if (td_db_) {
return server_diff;
}
return Clocks::system() - Time::now();
}
DcId Global::get_webfile_dc_id() const {
auto dc_id = narrow_cast<int32>(get_option_integer("webfile_dc_id"));
if (!DcId::is_valid(dc_id)) {
if (is_test_dc()) {
dc_id = 2;
} else {
dc_id = 4;
}
CHECK(DcId::is_valid(dc_id));
}
return DcId::internal(dc_id);
}
void Global::set_net_query_stats(std::shared_ptr<NetQueryStats> net_query_stats) {
net_query_creator_.set_create_func(
[net_query_stats = std::move(net_query_stats)] { return td::make_unique<NetQueryCreator>(net_query_stats); });
}
void Global::set_net_query_dispatcher(unique_ptr<NetQueryDispatcher> net_query_dispatcher) {
net_query_dispatcher_ = std::move(net_query_dispatcher);
}
const OptionManager *Global::get_option_manager() const {
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CHECK(option_manager_ != nullptr);
return option_manager_;
}
OptionManager *Global::get_option_manager() {
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CHECK(option_manager_ != nullptr);
return option_manager_;
}
void Global::set_option_empty(Slice name) {
get_option_manager()->set_option_empty(name);
}
void Global::set_option_boolean(Slice name, bool value) {
get_option_manager()->set_option_boolean(name, value);
}
void Global::set_option_integer(Slice name, int64 value) {
get_option_manager()->set_option_integer(name, value);
}
void Global::set_option_string(Slice name, Slice value) {
get_option_manager()->set_option_string(name, value);
}
bool Global::have_option(Slice name) const {
return get_option_manager()->have_option(name);
}
bool Global::get_option_boolean(Slice name, bool default_value) const {
return get_option_manager()->get_option_boolean(name, default_value);
}
int64 Global::get_option_integer(Slice name, int64 default_value) const {
return get_option_manager()->get_option_integer(name, default_value);
}
string Global::get_option_string(Slice name, string default_value) const {
return get_option_manager()->get_option_string(name, std::move(default_value));
}
int64 Global::get_location_key(double latitude, double longitude) {
const double PI = 3.14159265358979323846;
latitude *= PI / 180;
longitude *= PI / 180;
int64 key = 0;
if (latitude < 0) {
latitude = -latitude;
key = 65536;
}
double f = std::tan(PI / 4 - latitude / 2);
key += static_cast<int64>(f * std::cos(longitude) * 128) * 256;
key += static_cast<int64>(f * std::sin(longitude) * 128);
if (key == 0) {
key = 1;
}
return key;
}
int64 Global::get_location_access_hash(double latitude, double longitude) {
auto it = location_access_hashes_.find(get_location_key(latitude, longitude));
if (it == location_access_hashes_.end()) {
return 0;
}
return it->second;
}
void Global::add_location_access_hash(double latitude, double longitude, int64 access_hash) {
if (access_hash == 0) {
return;
}
location_access_hashes_[get_location_key(latitude, longitude)] = access_hash;
}
double get_global_server_time() {
return G()->server_time();
}
} // namespace td