// // 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/ClientManager.h" #include "telegram-bot-api/ClientParameters.h" #include "telegram-bot-api/HttpConnection.h" #include "telegram-bot-api/HttpServer.h" #include "telegram-bot-api/HttpStatConnection.h" #include "telegram-bot-api/Stats.h" #include "telegram-bot-api/Watchdog.h" #include "td/db/binlog/Binlog.h" #include "td/net/GetHostByNameActor.h" #include "td/net/HttpInboundConnection.h" #include "td/actor/actor.h" #include "td/actor/ConcurrentScheduler.h" #include "td/utils/AsyncFileLog.h" #include "td/utils/CombinedLog.h" #include "td/utils/common.h" #include "td/utils/crypto.h" #include "td/utils/ExitGuard.h" //#include "td/utils/GitInfo.h" #include "td/utils/logging.h" #include "td/utils/MemoryLog.h" #include "td/utils/misc.h" #include "td/utils/OptionParser.h" #include "td/utils/PathView.h" #include "td/utils/port/detail/ThreadIdGuard.h" #include "td/utils/port/IPAddress.h" #include "td/utils/port/path.h" #include "td/utils/port/rlimit.h" #include "td/utils/port/signals.h" #include "td/utils/port/stacktrace.h" #include "td/utils/port/thread.h" #include "td/utils/port/user.h" #include "td/utils/Promise.h" #include "td/utils/Slice.h" #include "td/utils/SliceBuilder.h" #include "td/utils/Status.h" #include "td/utils/Time.h" #include #include #include #include namespace telegram_bot_api { static std::atomic_flag need_reopen_log; static void after_log_rotation_signal_handler(int sig) { need_reopen_log.clear(); } static std::atomic_flag need_quit; static void quit_signal_handler(int sig) { need_quit.clear(); } static td::MemoryLog<1 << 20> memory_log; void print_log() { td::LogGuard log_guard; auto buf = memory_log.get_buffer(); auto pos = memory_log.get_pos(); size_t tail_length = buf.size() - pos; while (tail_length > 0 && buf[pos + tail_length - 1] == ' ') { tail_length--; } if (tail_length + 100 >= buf.size() - pos) { tail_length = buf.size() - pos; } td::signal_safe_write("------- Log dump -------\n"); td::signal_safe_write(buf.substr(pos, tail_length), false); td::signal_safe_write(buf.substr(0, pos), false); td::signal_safe_write("\n", false); td::signal_safe_write("------------------------\n"); } static std::atomic_bool has_failed{false}; static void dump_stacktrace_signal_handler(int sig) { if (has_failed) { return; } td::LogGuard log_guard; if (LOG_TAG != nullptr && *LOG_TAG) { td::signal_safe_write(td::Slice(LOG_TAG)); td::signal_safe_write(td::Slice("\n"), false); } td::Stacktrace::print_to_stderr(); } static void fail_signal_handler(int sig) { has_failed = true; { td::LogGuard log_guard; td::signal_safe_write_signal_number(sig); td::Stacktrace::PrintOptions options; options.use_gdb = true; td::Stacktrace::print_to_stderr(options); } print_log(); _Exit(EXIT_FAILURE); } static std::atomic_flag need_change_verbosity_level; static void change_verbosity_level_signal_handler(int sig) { need_change_verbosity_level.clear(); } static std::atomic_flag need_dump_log; static void dump_log_signal_handler(int sig) { if (has_failed) { return; } need_dump_log.clear(); } static void sigsegv_signal_handler(int signum, void *addr) { td::signal_safe_write_pointer(addr); fail_signal_handler(signum); } int main(int argc, char *argv[]) { SET_VERBOSITY_LEVEL(VERBOSITY_NAME(FATAL)); td::ExitGuard exit_guard; td::detail::ThreadIdGuard thread_id_guard; need_reopen_log.test_and_set(); need_quit.test_and_set(); need_change_verbosity_level.test_and_set(); need_dump_log.test_and_set(); td::Stacktrace::init(); td::setup_signals_alt_stack().ensure(); td::set_signal_handler(td::SignalType::User, after_log_rotation_signal_handler).ensure(); td::ignore_signal(td::SignalType::HangUp).ensure(); td::ignore_signal(td::SignalType::Pipe).ensure(); td::set_signal_handler(td::SignalType::Quit, quit_signal_handler).ensure(); td::set_signal_handler(td::SignalType::Abort, fail_signal_handler).ensure(); td::set_signal_handler(td::SignalType::Other, fail_signal_handler).ensure(); td::set_extended_signal_handler(td::SignalType::Error, sigsegv_signal_handler).ensure(); td::set_real_time_signal_handler(0, change_verbosity_level_signal_handler).ensure(); td::set_real_time_signal_handler(1, dump_log_signal_handler).ensure(); td::set_real_time_signal_handler(2, dump_stacktrace_signal_handler).ensure(); td::init_openssl_threads(); auto start_time = td::Time::now(); auto shared_data = std::make_shared(); auto parameters = std::make_unique(); parameters->version_ = "6.3.3"; parameters->shared_data_ = shared_data; parameters->start_time_ = start_time; auto net_query_stats = td::create_net_query_stats(); parameters->net_query_stats_ = net_query_stats; td::OptionParser options; bool need_print_usage = false; bool need_print_version = false; int http_port = 8081; int http_stat_port = 0; td::string http_ip_address = "0.0.0.0"; td::string http_stat_ip_address = "0.0.0.0"; td::string log_file_path; int default_verbosity_level = 0; int memory_verbosity_level = VERBOSITY_NAME(INFO); td::int64 log_max_file_size = 2000000000; td::string working_directory = PSTRING() << "." << TD_DIR_SLASH; td::string temporary_directory; td::string username; td::string groupname; td::uint64 max_connections = 0; td::uint64 cpu_affinity = 0; td::uint64 main_thread_affinity = 0; ClientManager::TokenRange token_range{0, 1}; parameters->api_id_ = [](auto x) -> td::int32 { if (x) { return td::to_integer(td::Slice(x)); } return 0; }(std::getenv("TELEGRAM_API_ID")); parameters->api_hash_ = [](auto x) -> td::string { if (x) { return x; } return td::string(); }(std::getenv("TELEGRAM_API_HASH")); options.set_usage(td::Slice(argv[0]), "--api-id= --api-hash= [--local] [OPTION]..."); options.set_description("Telegram Bot API server"); options.add_option('h', "help", "display this help text and exit", [&] { need_print_usage = true; }); options.add_option('\0', "version", "display version number and exit", [&] { need_print_version = true; }); options.add_option('\0', "local", "allow the Bot API server to serve local requests", [&] { parameters->local_mode_ = true; }); options.add_checked_option( '\0', "api-id", "application identifier for Telegram API access, which can be obtained at https://my.telegram.org (defaults to " "the value of the TELEGRAM_API_ID environment variable)", td::OptionParser::parse_integer(parameters->api_id_)); options.add_option('\0', "api-hash", "application identifier hash for Telegram API access, which can be obtained at " "https://my.telegram.org (defaults to the value of the TELEGRAM_API_HASH environment variable)", td::OptionParser::parse_string(parameters->api_hash_)); options.add_checked_option('p', "http-port", PSLICE() << "HTTP listening port (default is " << http_port << ")", td::OptionParser::parse_integer(http_port)); options.add_checked_option('s', "http-stat-port", "HTTP statistics port", td::OptionParser::parse_integer(http_stat_port)); options.add_option('d', "dir", "server working directory", td::OptionParser::parse_string(working_directory)); options.add_option('t', "temp-dir", "directory for storing HTTP server temporary files", td::OptionParser::parse_string(temporary_directory)); options.add_checked_option('\0', "filter", "\"/\". Allow only bots with 'bot_user_id % modulo == remainder'", [&](td::Slice rem_mod) { td::Slice rem; td::Slice mod; std::tie(rem, mod) = td::split(rem_mod, '/'); TRY_RESULT(rem_i, td::to_integer_safe(rem)); TRY_RESULT(mod_i, td::to_integer_safe(mod)); if (rem_i >= mod_i) { return td::Status::Error("Wrong argument specified: ensure that remainder < modulo"); } token_range = {rem_i, mod_i}; return td::Status::OK(); }); options.add_checked_option('\0', "max-webhook-connections", "default value of the maximum webhook connections per bot", td::OptionParser::parse_integer(parameters->default_max_webhook_connections_)); options.add_checked_option('\0', "http-ip-address", "local IP address, HTTP connections to which will be accepted. By default, connections to " "any local IPv4 address are accepted", [&](td::Slice ip_address) { TRY_STATUS(td::IPAddress::get_ip_address(ip_address.str())); http_ip_address = ip_address.str(); return td::Status::OK(); }); options.add_checked_option('\0', "http-stat-ip-address", "local IP address, HTTP statistics connections to which will be accepted. By default, " "statistics connections to any local IPv4 address are accepted", [&](td::Slice ip_address) { TRY_STATUS(td::IPAddress::get_ip_address(ip_address.str())); http_stat_ip_address = ip_address.str(); return td::Status::OK(); }); options.add_option('l', "log", "path to the file where the log will be written", td::OptionParser::parse_string(log_file_path)); options.add_checked_option('v', "verbosity", "log verbosity level", td::OptionParser::parse_integer(default_verbosity_level)); options.add_checked_option('\0', "memory-verbosity", "memory log verbosity level; defaults to 3", td::OptionParser::parse_integer(memory_verbosity_level)); options.add_checked_option( '\0', "log-max-file-size", PSLICE() << "maximum size of the log file in bytes before it will be auto-rotated (default is " << log_max_file_size << ")", td::OptionParser::parse_integer(log_max_file_size)); options.add_option('u', "username", "effective user name to switch to", td::OptionParser::parse_string(username)); options.add_option('g', "groupname", "effective group name to switch to", td::OptionParser::parse_string(groupname)); options.add_checked_option('c', "max-connections", "maximum number of open file descriptors", td::OptionParser::parse_integer(max_connections)); #if TD_HAVE_THREAD_AFFINITY options.add_checked_option('\0', "cpu-affinity", "CPU affinity as 64-bit mask (defaults to all available CPUs)", td::OptionParser::parse_integer(cpu_affinity)); options.add_checked_option( '\0', "main-thread-affinity", "CPU affinity of the main thread as 64-bit mask (defaults to the value of the option --cpu-affinity)", td::OptionParser::parse_integer(main_thread_affinity)); #else (void)cpu_affinity; (void)main_thread_affinity; #endif options.add_checked_option('\0', "proxy", "HTTP proxy server for outgoing webhook requests in the format http://host:port", [&](td::Slice address) { if (td::begins_with(address, "http://")) { address.remove_prefix(7); } else if (td::begins_with(address, "https://")) { address.remove_prefix(8); } return parameters->webhook_proxy_ip_address_.init_host_port(address.str()); }); options.add_check([&] { if (parameters->api_id_ <= 0 || parameters->api_hash_.empty()) { return td::Status::Error("You must provide valid api-id and api-hash obtained at https://my.telegram.org"); } return td::Status::OK(); }); options.add_check([&] { if (default_verbosity_level < 0) { return td::Status::Error("Wrong verbosity level specified"); } return td::Status::OK(); }); options.add_check([&] { if (memory_verbosity_level < 0) { return td::Status::Error("Wrong memory verbosity level specified"); } return td::Status::OK(); }); auto r_non_options = options.run(argc, argv, 0); if (need_print_usage) { LOG(PLAIN) << options; return 0; } if (need_print_version) { LOG(PLAIN) << "Bot API " << parameters->version_; return 0; } if (r_non_options.is_error()) { LOG(PLAIN) << argv[0] << ": " << r_non_options.error().message(); LOG(PLAIN) << options; return 1; } td::CombinedLog log; log.set_first(td::default_log_interface); log.set_second(&memory_log); td::log_interface = &log; td::AsyncFileLog file_log; auto init_status = [&] { #if TD_HAVE_THREAD_AFFINITY if (main_thread_affinity == 0) { main_thread_affinity = cpu_affinity; } if (main_thread_affinity != 0) { auto initial_mask = td::thread::get_affinity_mask(td::this_thread::get_id()); if (initial_mask == 0) { return td::Status::Error("Failed to get current thread affinity"); } if (cpu_affinity != 0) { TRY_STATUS_PREFIX(td::thread::set_affinity_mask(td::this_thread::get_id(), cpu_affinity), "Can't set CPU affinity mask: "); } else { cpu_affinity = initial_mask; } TRY_STATUS_PREFIX(td::thread::set_affinity_mask(td::this_thread::get_id(), main_thread_affinity), "Can't set main thread CPU affinity mask: "); } #endif if (max_connections != 0) { TRY_STATUS_PREFIX(td::set_resource_limit(td::ResourceLimitType::NoFile, max_connections), "Can't set file descriptor limit: "); } if (!username.empty()) { TRY_STATUS_PREFIX(td::change_user(username, groupname), "Can't change effective user: "); } { TRY_RESULT_PREFIX_ASSIGN(working_directory, td::realpath(working_directory, true), "Invalid working directory specified: "); if (working_directory.empty()) { return td::Status::Error("Empty path specified as working directory"); } if (working_directory.back() != TD_DIR_SLASH) { working_directory += TD_DIR_SLASH; } TRY_STATUS_PREFIX(td::mkpath(working_directory, 0750), "Failed to create working directory: "); auto r_temp_file = td::mkstemp(working_directory); if (r_temp_file.is_error()) { return td::Status::Error(PSLICE() << "Can't create files in the directory \"" << working_directory << "\". Use --dir option to specify a writable working directory"); } r_temp_file.ok_ref().first.close(); td::unlink(r_temp_file.ok().second).ensure(); auto r_temp_dir = td::mkdtemp(working_directory, "1:a"); if (r_temp_dir.is_error()) { parameters->allow_colon_in_filenames_ = false; r_temp_dir = td::mkdtemp(working_directory, "1~a"); if (r_temp_dir.is_error()) { return td::Status::Error(PSLICE() << "Can't create directories in the directory \"" << working_directory << "\". Use --dir option to specify a writable working directory"); } } td::rmdir(r_temp_dir.ok()).ensure(); } if (!temporary_directory.empty()) { if (td::PathView(temporary_directory).is_relative()) { temporary_directory = working_directory + temporary_directory; } TRY_STATUS_PREFIX(td::set_temporary_dir(temporary_directory), "Can't set temporary directory: "); } { // check temporary directory auto temp_dir = td::get_temporary_dir(); if (temp_dir.empty()) { return td::Status::Error("Can't find directory for temporary files. Use --temp-dir option to specify it"); } auto r_temp_file = td::mkstemp(temp_dir); if (r_temp_file.is_error()) { return td::Status::Error(PSLICE() << "Can't create files in the directory \"" << temp_dir << "\". Use --temp-dir option to specify another directory for temporary files"); } r_temp_file.ok_ref().first.close(); td::unlink(r_temp_file.ok().second).ensure(); } if (!log_file_path.empty()) { if (td::PathView(log_file_path).is_relative()) { log_file_path = working_directory + log_file_path; } TRY_STATUS_PREFIX(file_log.init(log_file_path, log_max_file_size), "Can't open log file: "); log.set_first(&file_log); } return td::Status::OK(); }(); if (init_status.is_error()) { LOG(PLAIN) << init_status.message(); LOG(PLAIN) << options; return 1; } parameters->working_directory_ = std::move(working_directory); if (parameters->default_max_webhook_connections_ <= 0) { parameters->default_max_webhook_connections_ = parameters->local_mode_ ? 100 : 40; } ::td::VERBOSITY_NAME(dns_resolver) = VERBOSITY_NAME(WARNING); log.set_second_verbosity_level(memory_verbosity_level); auto set_verbosity_level = [&log, memory_verbosity_level](int new_verbosity_level) { SET_VERBOSITY_LEVEL(td::max(memory_verbosity_level, new_verbosity_level)); log.set_first_verbosity_level(new_verbosity_level); }; set_verbosity_level(default_verbosity_level); // LOG(WARNING) << "Bot API server with commit " << td::GitInfo::commit() << ' ' // << (td::GitInfo::is_dirty() ? "(dirty)" : "") << " started"; LOG(WARNING) << "Bot API " << parameters->version_ << " server started"; // +3 threads for Td // one thread for ClientManager and all Clients // one thread for watchdogs // one thread for slow HTTP connections // one thread for DNS resolving const int thread_count = 7; td::ConcurrentScheduler sched(thread_count, cpu_affinity); td::GetHostByNameActor::Options get_host_by_name_options; get_host_by_name_options.scheduler_id = thread_count; parameters->get_host_by_name_actor_id_ = sched.create_actor_unsafe(0, "GetHostByName", std::move(get_host_by_name_options)) .release(); auto client_manager = sched.create_actor_unsafe(thread_count - 3, "ClientManager", std::move(parameters), token_range) .release(); sched .create_actor_unsafe( thread_count - 3, "HttpServer", http_ip_address, http_port, [client_manager, shared_data] { return td::ActorOwn( td::create_actor("HttpConnection", client_manager, shared_data)); }) .release(); if (http_stat_port != 0) { sched .create_actor_unsafe( thread_count - 3, "HttpStatsServer", http_stat_ip_address, http_stat_port, [client_manager] { return td::ActorOwn( td::create_actor("HttpStatConnection", client_manager)); }) .release(); } constexpr double WATCHDOG_TIMEOUT = 0.5; auto watchdog_id = sched.create_actor_unsafe(thread_count - 2, "Watchdog", td::this_thread::get_id(), WATCHDOG_TIMEOUT); sched.start(); double next_watchdog_kick_time = start_time; double next_cron_time = start_time; double last_dump_time = start_time - 1000.0; bool close_flag = false; std::atomic_bool can_quit{false}; ServerCpuStat::instance(); // create ServerCpuStat instance while (true) { sched.run_main(td::min(next_cron_time, next_watchdog_kick_time) - td::Time::now()); if (!need_reopen_log.test_and_set()) { td::log_interface->after_rotation(); } if (!need_quit.test_and_set()) { if (close_flag) { LOG(WARNING) << "Receive stop signal again. Exit immediately..."; std::_Exit(0); } LOG(WARNING) << "Stopping engine with uptime " << (td::Time::now() - start_time) << " seconds by a signal"; close_flag = true; auto guard = sched.get_main_guard(); watchdog_id.reset(); send_closure(client_manager, &ClientManager::close, td::PromiseCreator::lambda([&can_quit](td::Unit) { can_quit.store(true); td::Scheduler::instance()->yield(); })); } if (can_quit.exchange(false)) { break; } if (!need_change_verbosity_level.test_and_set()) { if (log.get_first_verbosity_level() == default_verbosity_level) { // increase default log verbosity level set_verbosity_level(100); } else { // return back verbosity level set_verbosity_level(default_verbosity_level); } } auto next_verbosity_level = shared_data->next_verbosity_level_.exchange(-1); if (next_verbosity_level != -1) { set_verbosity_level(next_verbosity_level); } if (!need_dump_log.test_and_set()) { print_log(); auto guard = sched.get_main_guard(); send_closure(client_manager, &ClientManager::dump_statistics); } double now = td::Time::now(); if (now >= next_cron_time) { if (now >= next_cron_time + 1.0) { next_cron_time = now; } next_cron_time += 1.0; ServerCpuStat::update(now); } if (now >= start_time + 600) { auto guard = sched.get_main_guard(); send_closure(watchdog_id, &Watchdog::kick); next_watchdog_kick_time = now + WATCHDOG_TIMEOUT / 2; } if (now > last_dump_time + 300.0) { last_dump_time = now; auto guard = sched.get_main_guard(); send_closure(client_manager, &ClientManager::dump_statistics); } } LOG(WARNING) << "--------------------FINISH ENGINE--------------------"; if (net_query_stats.use_count() != 1) { LOG(ERROR) << "NetQueryStats have leaked"; } net_query_stats = nullptr; sched.finish(); SET_VERBOSITY_LEVEL(VERBOSITY_NAME(FATAL)); td::log_interface = td::default_log_interface; return 0; } } // namespace telegram_bot_api int main(int argc, char *argv[]) { return telegram_bot_api::main(argc, argv); }