--- lbbs/include/common.h	2004/10/18 11:34:15	1.4
+++ lbbs/include/common.h	2025/06/01 03:07:42	1.37
@@ -1,26 +1,94 @@
 /***************************************************************************
-                          common.h  -  description
-                             -------------------
-    begin                : Mon Oct 18 2004
-    copyright            : (C) 2004 by Leaflet
-    email                : leaflet@leafok.com
+						  common.h  -  description
+							 -------------------
+	Copyright            : (C) 2004-2025 by Leaflet
+	Email                : leaflet@leafok.com
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   This program 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     *
+ *   the Free Software Foundation; either version 3 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
  ***************************************************************************/
 
-#include <stdio.h>
-#include <time.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
+#ifndef _COMMON_H_
+#define _COMMON_H_
 
-extern char app_home_dir[256];
+#include <stddef.h>
+
+#define LINE_BUFFER_LEN 1024
+#define FILE_PATH_LEN 4096
+
+// Version
+extern char app_version[256];
+
+// Enviroment
+#define CONF_BBSD "conf/bbsd.conf"
+#define CONF_MENU "var/menu_merged.conf"
+#define CONF_BBSNET "conf/bbsnet.conf"
+
+#define LOG_FILE_INFO "log/bbsd.log"
+#define LOG_FILE_ERROR "log/error.log"
+
+#define DATA_WELCOME "data/welcome.txt"
+#define DATA_REGISTER "data/register.txt"
+#define DATA_GOODBYE "data/goodbye.txt"
+#define DATA_LICENSE "data/license.txt"
+#define DATA_COPYRIGHT "data/copyright.txt"
+#define DATA_LOGIN_ERROR "data/login_error.txt"
+#define DATA_ACTIVE_BOARD "data/active_board.txt"
+#define DATA_READ_HELP "data/read_help.txt"
+
+#define VAR_MAX_USER_ONLINE "var/max_user_online.dat"
+#define VAR_BBS_TOP "var/bbs_top.txt"
+
+#define VAR_ARTICLE_BLOCK_SHM "var/article_block_shm.~"
+#define VAR_SECTION_LIST_SHM "var/section_list_shm.~"
+#define VAR_TRIE_DICT_SHM "var/trie_dict_shm.~"
+
+#define VAR_ARTICLE_CACHE_DIR "var/articles/"
+
+// File loader
+extern const char *data_files_load_startup[];
+extern int data_files_load_startup_count;
+extern const char *data_files_load_on_timeval[];
+extern int data_files_load_timeval_count;
+
+// Screen
+#define SCREEN_ROWS 24
+#define SCREEN_COLS 80
+
+// Network
+#define MAX_CLIENTS_LIMIT 2048
+#define IP_ADDR_LEN 50
+#define MAX_EVENTS 10
+
+extern int socket_server;
+extern int socket_client;
+extern char hostaddr_server[IP_ADDR_LEN];
+extern char hostaddr_client[IP_ADDR_LEN];
+extern int port_server;
+extern int port_client;
+
+extern const char *get_time_str(char *string, size_t length);
+
+// Signal handler
+extern void sig_hup_handler(int);
+extern void sig_term_handler(int);
+extern void sig_chld_handler(int);
+
+// System
+extern volatile int SYS_server_exit;
+extern volatile int SYS_child_process_count;
+extern volatile int SYS_child_exit;
+extern volatile int SYS_conf_reload;
+extern volatile int SYS_data_file_reload;
+extern volatile int SYS_section_list_reload;
+
+// Network
+extern const char *ip_mask(char *s, int level, char mask);
+
+#endif //_COMMON_H_