debug.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "stdafx.h"
#include "core/string_consumer.hpp"
#include "console_func.h"
#include "debug.h"
#include "string_func.h"
#include "fileio_func.h"
#include "settings_type.h"
#include <mutex>
 
#if defined(_WIN32)
#include "os/windows/win32.h"
#endif
 
#include "3rdparty/fmt/chrono.h"
 
#include "network/network_admin.h"
 
#include "safeguards.h"

struct QueuedDebugItem {
  std::string_view level;   
  std::string message; 
};
std::atomic<bool> _debug_remote_console; 
std::mutex _debug_remote_console_mutex; 
std::vector<QueuedDebugItem> _debug_remote_console_queue; 
std::vector<QueuedDebugItem> _debug_remote_console_queue_spare; 
 
int _debug_driver_level;
int _debug_grf_level;
int _debug_map_level;
int _debug_misc_level;
int _debug_net_level;
int _debug_sprite_level;
int _debug_oldloader_level;
int _debug_yapf_level;
int _debug_fontcache_level;
int _debug_script_level;
int _debug_sl_level;
int _debug_gamelog_level;
int _debug_desync_level;
int _debug_console_level;
#ifdef RANDOM_DEBUG
int _debug_random_level;
#endif
 
struct DebugLevel {
  std::string_view name;
  int *level;
};
 
#define DEBUG_LEVEL(x) { #x, &_debug_##x##_level }
static const std::initializer_list<DebugLevel> _debug_levels{
  DEBUG_LEVEL(driver),
  DEBUG_LEVEL(grf),
  DEBUG_LEVEL(map),
  DEBUG_LEVEL(misc),
  DEBUG_LEVEL(net),
  DEBUG_LEVEL(sprite),
  DEBUG_LEVEL(oldloader),
  DEBUG_LEVEL(yapf),
  DEBUG_LEVEL(fontcache),
  DEBUG_LEVEL(script),
  DEBUG_LEVEL(sl),
  DEBUG_LEVEL(gamelog),
  DEBUG_LEVEL(desync),
  DEBUG_LEVEL(console),
#ifdef RANDOM_DEBUG
  DEBUG_LEVEL(random),
#endif
};
#undef DEBUG_LEVEL

void DumpDebugFacilityNames(std::back_insert_iterator<std::string> &output_iterator)
{
  bool written = false;
  for (const auto &debug_level : _debug_levels) {
    if (!written) {
      fmt::format_to(output_iterator, "List of debug facility names:\n");
    } else {
      fmt::format_to(output_iterator, ", ");
    }
    fmt::format_to(output_iterator, "{}", debug_level.name);
    written = true;
  }
  if (written) {
    fmt::format_to(output_iterator, "\n\n");
  }
}

void DebugPrint(std::string_view category, int level, std::string &&message)
{
  if (category == "desync" && level != 0) {
    static auto f = FioFOpenFile("commands-out.log", "wb", AUTOSAVE_DIR);
    if (!f.has_value()) return;
 
    fmt::print(*f, "{}{}\n", GetLogPrefix(true), message);
    fflush(*f);
#ifdef RANDOM_DEBUG
  } else if (category == "random") {
    static auto f = FioFOpenFile("random-out.log", "wb", AUTOSAVE_DIR);
    if (!f.has_value()) return;
 
    fmt::print(*f, "{}\n", message);
    fflush(*f);
#endif
  } else {
    fmt::print(stderr, "{}dbg: [{}:{}] {}\n", GetLogPrefix(true), category, level, message);
 
    if (_debug_remote_console.load()) {
      /* Only add to the queue when there is at least one consumer of the data. */
      std::lock_guard<std::mutex> lock(_debug_remote_console_mutex);
      _debug_remote_console_queue.emplace_back(category, std::move(message));
    }
  }
}

void SetDebugString(std::string_view s, SetDebugStringErrorFunc error_func)
{
  StringConsumer consumer{s};
 
  /* Store planned changes into map during parse */
  std::map<std::string_view, int> new_levels;
 
  /* Global debugging level? */
  auto level = consumer.TryReadIntegerBase<int>(10);
  if (level.has_value()) {
    for (const auto &debug_level : _debug_levels) {
      new_levels[debug_level.name] = *level;
    }
  }
 
  static const std::string_view lowercase_letters{"abcdefghijklmnopqrstuvwxyz"};
  static const std::string_view lowercase_letters_and_digits{"abcdefghijklmnopqrstuvwxyz0123456789"};
 
  /* Individual levels */
  while (consumer.AnyBytesLeft()) {
    consumer.SkipUntilCharIn(lowercase_letters);
    if (!consumer.AnyBytesLeft()) break;
 
    /* Find the level by name. */
    std::string_view key = consumer.ReadUntilCharNotIn(lowercase_letters);
    auto it = std::ranges::find(_debug_levels, key, &DebugLevel::name);
    if (it == std::end(_debug_levels)) {
      error_func(fmt::format("Unknown debug level '{}'", key));
      return;
    }
 
    /* Do not skip lowercase letters, so 'net misc=2' won't be resolved
     * to setting 'net=2' and leaving misc untouched. */
    consumer.SkipUntilCharIn(lowercase_letters_and_digits);
    level = consumer.TryReadIntegerBase<int>(10);
    if (!level.has_value()) {
      error_func(fmt::format("Level for '{}' must be a valid integer.", key));
      return;
    }
 
    new_levels[it->name] = *level;
  }
 
  /* Apply the changes after parse is successful */
  for (const auto &debug_level : _debug_levels) {
    const auto &nl = new_levels.find(debug_level.name);
    if (nl != new_levels.end()) {
      *debug_level.level = nl->second;
    }
  }
}

std::string GetDebugString()
{
  std::string result;
  for (const auto &debug_level : _debug_levels) {
    if (!result.empty()) result += ", ";
    format_append(result, "{}={}", debug_level.name, *debug_level.level);
  }
  return result;
}

std::string GetLogPrefix(bool force)
{
  std::string log_prefix;
  if (force || _settings_client.gui.show_date_in_logs) {
    log_prefix = fmt::format("[{:%Y-%m-%d %H:%M:%S}] ", fmt::localtime(time(nullptr)));
  }
  return log_prefix;
}

void DebugSendRemoteMessages()
{
  if (!_debug_remote_console.load()) return;
 
  {
    std::lock_guard<std::mutex> lock(_debug_remote_console_mutex);
    std::swap(_debug_remote_console_queue, _debug_remote_console_queue_spare);
  }
 
  for (auto &item : _debug_remote_console_queue_spare) {
    NetworkAdminConsole(item.level, item.message);
    if (_settings_client.gui.developer >= 2) IConsolePrint(CC_DEBUG, "dbg: [{}] {}", item.level, item.message);
  }
 
  _debug_remote_console_queue_spare.clear();
}

void DebugReconsiderSendRemoteMessages()
{
  bool enable = _settings_client.gui.developer >= 2;
 
  for (ServerNetworkAdminSocketHandler *as : ServerNetworkAdminSocketHandler::IterateActive()) {
    if (as->update_frequency[ADMIN_UPDATE_CONSOLE].Test(AdminUpdateFrequency::Automatic)) {
      enable = true;
      break;
    }
  }
 
  _debug_remote_console.store(enable);
}