--- lbbs/include/common.h	2004/10/17 06:19:01	1.2
+++ lbbs/include/common.h	2025/06/26 12:17:02	1.46
@@ -1,3 +1,103 @@
-#include <stdio.h>
-#include <ctype.h>
+/***************************************************************************
+						  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 3 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#include <stddef.h>
+#include <libssh/libssh.h>
+#include <libssh/server.h>
+
+#define LINE_BUFFER_LEN 1024
+#define FILE_PATH_LEN 4096
+
+// Version
+#define APP_NAME "LBBS"
+#define APP_VER "1.2.0"
+#define APP_INFO (APP_NAME " version " APP_VER " build on " __DATE__ " " __TIME__)
+
+// Enviroment
+#define CONF_BBSD "conf/bbsd.conf"
+#define CONF_MENU "var/menu_merged.conf"
+#define CONF_BBSNET "conf/bbsnet.conf"
+#define SSH_HOST_KEYFILE "conf/ssh_host_rsa_key"
+
+#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_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/"
+#define VAR_GEN_EX_MENU_DIR "var/gen_ex/"
+
+// File loader
+extern const char *data_files_load_startup[];
+extern int data_files_load_startup_count;
+
+// Screen
+#define SCREEN_ROWS 24
+#define SCREEN_COLS 80
+
+// Network
+#define MAX_CLIENT_LIMIT 2000
+#define MAX_CLIENT_PER_IP_LIMIT 100
+#define IP_ADDR_LEN 50
+#define MAX_EVENTS 10
+
+// User
+#define BBS_MAX_USER_LIMIT 100000
+
+extern int socket_server[2];
+extern int socket_client;
+extern char hostaddr_client[IP_ADDR_LEN];
+extern int port_client;
+
+// SSHv2
+extern int SSH_v2;
+extern ssh_bind sshbind;
+extern ssh_session SSH_session;
+extern ssh_channel SSH_channel;
+
+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;
+
+// Network
+extern const char *ip_mask(char *s, int level, char mask);
+
+#endif //_COMMON_H_